mono/mini/aot-compiler.c

   1 /**
   2  * \file
   3  * mono Ahead of Time compiler
   4  *
   5  * Author:
   6  *   Dietmar Maurer (dietmar@ximian.com)
   7  *   Zoltan Varga (vargaz@gmail.com)
   8  *   Johan Lorensson (lateralusx.github@gmail.com)
   9  *
  10  * (C) 2002 Ximian, Inc.
  11  * Copyright 2003-2011 Novell, Inc
  12  * Copyright 2011 Xamarin Inc (http://www.xamarin.com)
  13  * Licensed under the MIT license. See LICENSE file in the project root for full license information.
  14  */
  15
  16 #include "config.h"
  17 #include <sys/types.h>
  18 #ifdef HAVE_UNISTD_H
  19 #include <unistd.h>
  20 #endif
  21 #ifdef HAVE_STDINT_H
  22 #include <stdint.h>
  23 #endif
  24 #include <fcntl.h>
  25 #include <ctype.h>
  26 #include <string.h>
  27 #ifndef HOST_WIN32
  28 #include <sys/time.h>
  29 #else
  30 #include <winsock2.h>
  31 #include <windows.h>
  32 #endif
  33
  34 #include <errno.h>
  35 #include <sys/stat.h>
  36
  37 #include <mono/metadata/abi-details.h>
  38 #include <mono/metadata/tabledefs.h>
  39 #include <mono/metadata/class.h>
  40 #include <mono/metadata/object.h>
  41 #include <mono/metadata/tokentype.h>
  42 #include <mono/metadata/appdomain.h>
  43 #include <mono/metadata/debug-helpers.h>
  44 #include <mono/metadata/assembly.h>
  45 #include <mono/metadata/metadata-internals.h>
  46 #include <mono/metadata/reflection-internals.h>
  47 #include <mono/metadata/marshal.h>
  48 #include <mono/metadata/gc-internals.h>
  49 #include <mono/metadata/mempool-internals.h>
  50 #include <mono/metadata/mono-endian.h>
  51 #include <mono/metadata/threads-types.h>
  52 #include <mono/metadata/custom-attrs-internals.h>
  53 #include <mono/utils/mono-logger-internals.h>
  54 #include <mono/utils/mono-compiler.h>
  55 #include <mono/utils/mono-time.h>
  56 #include <mono/utils/mono-mmap.h>
  57 #include <mono/utils/mono-rand.h>
  58 #include <mono/utils/json.h>
  59 #include <mono/utils/mono-threads-coop.h>
  60 #include <mono/profiler/aot.h>
  61 #include <mono/utils/w32api.h>
  62
  63 #include "aot-compiler.h"
  64 #include "aot-runtime.h"
  65 #include "seq-points.h"
  66 #include "image-writer.h"
  67 #include "dwarfwriter.h"
  68 #include "mini-gc.h"
  69 #include "mini-llvm.h"
  70 #include "mini-runtime.h"
  71
  72 #if !defined(DISABLE_AOT) && !defined(DISABLE_JIT)
  73
  74 // Use MSVC toolchain, Clang for MSVC using MSVC codegen and linker, when compiling for AMD64
  75 // targeting WIN32 platforms running AOT compiler on WIN32 platform with VS installation.
  76 #if defined(TARGET_AMD64) && defined(TARGET_WIN32) && defined(HOST_WIN32) && defined(_MSC_VER)
  77 #define TARGET_X86_64_WIN32_MSVC
  78 #endif
  79
  80 #if defined(TARGET_X86_64_WIN32_MSVC)
  81 #define TARGET_WIN32_MSVC
  82 #endif
  83
  84 // Emit native unwind info on Windows platforms (different from DWARF). Emitted unwind info
  85 // works when using the MSVC toolchain using Clang for MSVC codegen and linker. Only supported when
  86 // compiling for AMD64 (Windows x64 platforms).
  87 #if defined(TARGET_WIN32_MSVC) && defined(MONO_ARCH_HAVE_UNWIND_TABLE)
  88 #define EMIT_WIN32_UNWIND_INFO
  89 #endif
  90
  91 #if defined(__linux__)
  92 #define RODATA_SECT ".rodata"
  93 #elif defined(TARGET_MACH)
  94 #define RODATA_SECT ".section __TEXT, __const"
  95 #elif defined(TARGET_WIN32_MSVC)
  96 #define RODATA_SECT ".rdata"
  97 #else
  98 #define RODATA_SECT ".text"
  99 #endif
 100
 101 #define TV_DECLARE(name) gint64 name
 102 #define TV_GETTIME(tv) tv = mono_100ns_ticks ()
 103 #define TV_ELAPSED(start,end) (((end) - (start)) / 10)
 104
 105 #define ROUND_DOWN(VALUE,SIZE)  ((VALUE) & ~((SIZE) - 1))
 106
 107 typedef struct {
 108         char *name;
 109         MonoImage *image;
 110 } ImageProfileData;
 111
 112 typedef struct ClassProfileData ClassProfileData;
 113
 114 typedef struct {
 115         int argc;
 116         ClassProfileData **argv;
 117         MonoGenericInst *inst;
 118 } GInstProfileData;
 119
 120 struct ClassProfileData {
 121         ImageProfileData *image;
 122         char *ns, *name;
 123         GInstProfileData *inst;
 124         MonoClass *klass;
 125 };
 126
 127 typedef struct {
 128         ClassProfileData *klass;
 129         int id;
 130         char *name;
 131         int param_count;
 132         char *signature;
 133         GInstProfileData *inst;
 134         MonoMethod *method;
 135 } MethodProfileData;
 136
 137 typedef struct {
 138         GHashTable *images, *classes, *ginsts, *methods;
 139 } ProfileData;
 140
 141 /* predefined values for static readonly fields without needed to run the .cctor */
 142 typedef struct _ReadOnlyValue ReadOnlyValue;
 143 struct _ReadOnlyValue {
 144         ReadOnlyValue *next;
 145         char *name;
 146         int type; /* to be used later for typechecking to prevent user errors */
 147         union {
 148                 guint8 i1;
 149                 guint16 i2;
 150                 guint32 i4;
 151                 guint64 i8;
 152                 gpointer ptr;
 153         } value;
 154 };
 155 static ReadOnlyValue *readonly_values;
 156
 157 typedef struct MonoAotOptions {
 158         char *outfile;
 159         char *llvm_outfile;
 160         char *data_outfile;
 161         GList *profile_files;
 162         gboolean save_temps;
 163         gboolean write_symbols;
 164         gboolean metadata_only;
 165         gboolean bind_to_runtime_version;
 166         MonoAotMode mode;
 167         gboolean interp;
 168         gboolean no_dlsym;
 169         gboolean static_link;
 170         gboolean asm_only;
 171         gboolean asm_writer;
 172         gboolean nodebug;
 173         gboolean dwarf_debug;
 174         gboolean soft_debug;
 175         gboolean log_generics;
 176         gboolean log_instances;
 177         gboolean gen_msym_dir;
 178         char *gen_msym_dir_path;
 179         gboolean direct_pinvoke;
 180         gboolean direct_icalls;
 181         gboolean no_direct_calls;
 182         gboolean use_trampolines_page;
 183         gboolean no_instances;
 184         // We are collecting inflated methods and emitting non-inflated
 185         gboolean dedup;
 186         // The name of the assembly for which the AOT module is going to have all deduped methods moved to.
 187         // When set, we are emitting inflated methods only
 188         char *dedup_include;
 189         gboolean gnu_asm;
 190         gboolean llvm;
 191         gboolean llvm_only;
 192         int nthreads;
 193         int ntrampolines;
 194         int nrgctx_trampolines;
 195         int nimt_trampolines;
 196         int ngsharedvt_arg_trampolines;
 197         int nrgctx_fetch_trampolines;
 198         gboolean print_skipped_methods;
 199         gboolean stats;
 200         gboolean verbose;
 201         char *tool_prefix;
 202         char *ld_flags;
 203         char *mtriple;
 204         char *llvm_path;
 205         char *temp_path;
 206         char *instances_logfile_path;
 207         char *logfile;
 208         gboolean dump_json;
 209         gboolean profile_only;
 210 } MonoAotOptions;
 211
 212 typedef enum {
 213         METHOD_CAT_NORMAL,
 214         METHOD_CAT_GSHAREDVT,
 215         METHOD_CAT_INST,
 216         METHOD_CAT_WRAPPER,
 217         METHOD_CAT_NUM
 218 } MethodCategory;
 219
 220 typedef struct MonoAotStats {
 221         int ccount, mcount, lmfcount, abscount, gcount, ocount, genericcount;
 222         gint64 code_size, info_size, ex_info_size, unwind_info_size, got_size, class_info_size, got_info_size, plt_size;
 223         int methods_without_got_slots, direct_calls, all_calls, llvm_count;
 224         int got_slots, offsets_size;
 225         int method_categories [METHOD_CAT_NUM];
 226         int got_slot_types [MONO_PATCH_INFO_NUM];
 227         int got_slot_info_sizes [MONO_PATCH_INFO_NUM];
 228         int jit_time, gen_time, link_time;
 229 } MonoAotStats;
 230
 231 typedef struct GotInfo {
 232         GHashTable *patch_to_got_offset;
 233         GHashTable **patch_to_got_offset_by_type;
 234         GPtrArray *got_patches;
 235 } GotInfo;
 236
 237 #ifdef EMIT_WIN32_UNWIND_INFO
 238 typedef struct _UnwindInfoSectionCacheItem {
 239         char *xdata_section_label;
 240         PUNWIND_INFO unwind_info;
 241         gboolean xdata_section_emitted;
 242 } UnwindInfoSectionCacheItem;
 243 #endif
 244
 245 typedef struct MonoAotCompile {
 246         MonoImage *image;
 247         GPtrArray *methods;
 248         GHashTable *method_indexes;
 249         GHashTable *method_depth;
 250         MonoCompile **cfgs;
 251         int cfgs_size;
 252         GHashTable **patch_to_plt_entry;
 253         GHashTable *plt_offset_to_entry;
 254         //GHashTable *patch_to_got_offset;
 255         //GHashTable **patch_to_got_offset_by_type;
 256         //GPtrArray *got_patches;
 257         GotInfo got_info, llvm_got_info;
 258         GHashTable *image_hash;
 259         GHashTable *method_to_cfg;
 260         GHashTable *token_info_hash;
 261         GHashTable *method_to_pinvoke_import;
 262         GPtrArray *extra_methods;
 263         GPtrArray *image_table;
 264         GPtrArray *globals;
 265         GPtrArray *method_order;
 266         GHashTable *dedup_stats;
 267         GHashTable *dedup_cache;
 268         gboolean dedup_cache_changed;
 269         GHashTable *export_names;
 270         /* Maps MonoClass* -> blob offset */
 271         GHashTable *klass_blob_hash;
 272         /* Maps MonoMethod* -> blob offset */
 273         GHashTable *method_blob_hash;
 274         GHashTable *gsharedvt_in_signatures;
 275         GHashTable *gsharedvt_out_signatures;
 276         guint32 *plt_got_info_offsets;
 277         guint32 got_offset, llvm_got_offset, plt_offset, plt_got_offset_base, nshared_got_entries;
 278         /* Number of GOT entries reserved for trampolines */
 279         guint32 num_trampoline_got_entries;
 280         guint32 tramp_page_size;
 281
 282         guint32 table_offsets [MONO_AOT_TABLE_NUM];
 283         guint32 num_trampolines [MONO_AOT_TRAMP_NUM];
 284         guint32 trampoline_got_offset_base [MONO_AOT_TRAMP_NUM];
 285         guint32 trampoline_size [MONO_AOT_TRAMP_NUM];
 286         guint32 tramp_page_code_offsets [MONO_AOT_TRAMP_NUM];
 287
 288         MonoAotOptions aot_opts;
 289         guint32 nmethods;
 290         guint32 opts;
 291         guint32 simd_opts;
 292         MonoMemPool *mempool;
 293         MonoAotStats stats;
 294         int method_index;
 295         char *static_linking_symbol;
 296         mono_mutex_t mutex;
 297         gboolean gas_line_numbers;
 298         /* Whenever to emit an object file directly from llc */
 299         gboolean llvm_owriter;
 300         gboolean llvm_owriter_supported;
 301         MonoImageWriter *w;
 302         MonoDwarfWriter *dwarf;
 303         FILE *fp;
 304         char *tmpbasename;
 305         char *tmpfname;
 306         char *llvm_sfile;
 307         char *llvm_ofile;
 308         GSList *cie_program;
 309         GHashTable *unwind_info_offsets;
 310         GPtrArray *unwind_ops;
 311         guint32 unwind_info_offset;
 312         char *global_prefix;
 313         char *got_symbol;
 314         char *llvm_got_symbol;
 315         char *plt_symbol;
 316         char *llvm_eh_frame_symbol;
 317         GHashTable *method_label_hash;
 318         const char *temp_prefix;
 319         const char *user_symbol_prefix;
 320         const char *llvm_label_prefix;
 321         const char *inst_directive;
 322         int align_pad_value;
 323         guint32 label_generator;
 324         gboolean llvm;
 325         gboolean has_jitted_code;
 326         gboolean is_full_aot;
 327         MonoAotFileFlags flags;
 328         MonoDynamicStream blob;
 329         gboolean blob_closed;
 330         GHashTable *typespec_classes;
 331         GString *llc_args;
 332         GString *as_args;
 333         char *assembly_name_sym;
 334         GHashTable *plt_entry_debug_sym_cache;
 335         gboolean thumb_mixed, need_no_dead_strip, need_pt_gnu_stack;
 336         GHashTable *ginst_hash;
 337         GHashTable *dwarf_ln_filenames;
 338         gboolean global_symbols;
 339         int objc_selector_index, objc_selector_index_2;
 340         GPtrArray *objc_selectors;
 341         GHashTable *objc_selector_to_index;
 342         GList *profile_data;
 343         GHashTable *profile_methods;
 344 #ifdef EMIT_WIN32_UNWIND_INFO
 345         GList *unwind_info_section_cache;
 346 #endif
 347         FILE *logfile;
 348         FILE *instances_logfile;
 349         FILE *data_outfile;
 350         int datafile_offset;
 351         int gc_name_offset;
 352         // In this mode, we are emitting dedupable methods that we encounter
 353         gboolean dedup_emit_mode;
 354 } MonoAotCompile;
 355
 356 typedef struct {
 357         int plt_offset;
 358         char *symbol, *llvm_symbol, *debug_sym;
 359         MonoJumpInfo *ji;
 360         gboolean jit_used, llvm_used;
 361 } MonoPltEntry;
 362
 363 #define mono_acfg_lock(acfg) mono_os_mutex_lock (&((acfg)->mutex))
 364 #define mono_acfg_unlock(acfg) mono_os_mutex_unlock (&((acfg)->mutex))
 365
 366 /* This points to the current acfg in LLVM mode */
 367 static MonoAotCompile *llvm_acfg;
 368
 369 #ifdef HAVE_ARRAY_ELEM_INIT
 370 #define MSGSTRFIELD(line) MSGSTRFIELD1(line)
 371 #define MSGSTRFIELD1(line) str##line
 372 static const struct msgstr_t {
 373 #define PATCH_INFO(a,b) char MSGSTRFIELD(__LINE__) [sizeof (b)];
 374 #include "patch-info.h"
 375 #undef PATCH_INFO
 376 } opstr = {
 377 #define PATCH_INFO(a,b) b,
 378 #include "patch-info.h"
 379 #undef PATCH_INFO
 380 };
 381 static const gint16 opidx [] = {
 382 #define PATCH_INFO(a,b) [MONO_PATCH_INFO_ ## a] = offsetof (struct msgstr_t, MSGSTRFIELD(__LINE__)),
 383 #include "patch-info.h"
 384 #undef PATCH_INFO
 385 };
 386
 387 static G_GNUC_UNUSED const char*
 388 get_patch_name (int info)
 389 {
 390         return (const char*)&opstr + opidx [info];
 391 }
 392
 393 #else
 394 #define PATCH_INFO(a,b) b,
 395 static const char* const
 396 patch_types [MONO_PATCH_INFO_NUM + 1] = {
 397 #include "patch-info.h"
 398         NULL
 399 };
 400
 401 static G_GNUC_UNUSED const char*
 402 get_patch_name (int info)
 403 {
 404         return patch_types [info];
 405 }
 406
 407 #endif
 408
 409 static void
 410 mono_flush_method_cache (MonoAotCompile *acfg);
 411
 412 static void
 413 mono_read_method_cache (MonoAotCompile *acfg);
 414
 415 static guint32
 416 get_unwind_info_offset (MonoAotCompile *acfg, guint8 *encoded, guint32 encoded_len);
 417
 418 static char*
 419 get_plt_entry_debug_sym (MonoAotCompile *acfg, MonoJumpInfo *ji, GHashTable *cache);
 420
 421 static void
 422 add_gsharedvt_wrappers (MonoAotCompile *acfg, MonoMethodSignature *sig, gboolean gsharedvt_in, gboolean gsharedvt_out, gboolean interp_in);
 423
 424 static void
 425 add_profile_instances (MonoAotCompile *acfg, ProfileData *data);
 426
 427 static inline gboolean
 428 ignore_cfg (MonoCompile *cfg)
 429 {
 430         return !cfg || cfg->skip;
 431 }
 432
 433 static void
 434 aot_printf (MonoAotCompile *acfg, const gchar *format, ...)
 435 {
 436         FILE *output;
 437         va_list args;
 438
 439         if (acfg->logfile)
 440                 output = acfg->logfile;
 441         else
 442                 output = stdout;
 443
 444         va_start (args, format);
 445         vfprintf (output, format, args);
 446         va_end (args);
 447 }
 448
 449 static void
 450 aot_printerrf (MonoAotCompile *acfg, const gchar *format, ...)
 451 {
 452         FILE *output;
 453         va_list args;
 454
 455         if (acfg->logfile)
 456                 output = acfg->logfile;
 457         else
 458                 output = stderr;
 459
 460         va_start (args, format);
 461         vfprintf (output, format, args);
 462         va_end (args);
 463 }
 464
 465 static void
 466 report_loader_error (MonoAotCompile *acfg, MonoError *error, gboolean fatal, const char *format, ...)
 467 {
 468         FILE *output;
 469         va_list args;
 470
 471         if (mono_error_ok (error))
 472                 return;
 473
 474         if (acfg->logfile)
 475                 output = acfg->logfile;
 476         else
 477                 output = stderr;
 478
 479         va_start (args, format);
 480         vfprintf (output, format, args);
 481         va_end (args);
 482         mono_error_cleanup (error);
 483
 484         if (acfg->is_full_aot && fatal) {
 485                 fprintf (output, "FullAOT cannot continue if there are loader errors.\n");
 486                 exit (1);
 487         }
 488 }
 489
 490 /* Wrappers around the image writer functions */
 491
 492 #define MAX_SYMBOL_SIZE 256
 493
 494 static inline const char *
 495 mangle_symbol (const char * symbol, char * mangled_symbol, gsize length)
 496 {
 497         gsize needed_size = length;
 498
 499         g_assert (NULL != symbol);
 500         g_assert (NULL != mangled_symbol);
 501         g_assert (0 != length);
 502
 503 #if defined(TARGET_WIN32) && defined(TARGET_X86)
 504         if (symbol && '_' != symbol [0]) {
 505                 needed_size = g_snprintf (mangled_symbol, length, "_%s", symbol);
 506         } else {
 507                 needed_size = g_snprintf (mangled_symbol, length, "%s", symbol);
 508         }
 509 #else
 510         needed_size = g_snprintf (mangled_symbol, length, "%s", symbol);
 511 #endif
 512
 513         g_assert (0 <= needed_size && needed_size < length);
 514         return mangled_symbol;
 515 }
 516
 517 static inline char *
 518 mangle_symbol_alloc (const char * symbol)
 519 {
 520         g_assert (NULL != symbol);
 521
 522 #if defined(TARGET_WIN32) && defined(TARGET_X86)
 523         if (symbol && '_' != symbol [0]) {
 524                 return g_strdup_printf ("_%s", symbol);
 525         }
 526         else {
 527                 return g_strdup_printf ("%s", symbol);
 528         }
 529 #else
 530         return g_strdup_printf ("%s", symbol);
 531 #endif
 532 }
 533
 534 static inline void
 535 emit_section_change (MonoAotCompile *acfg, const char *section_name, int subsection_index)
 536 {
 537         mono_img_writer_emit_section_change (acfg->w, section_name, subsection_index);
 538 }
 539
 540 #if defined(TARGET_WIN32) && defined(TARGET_X86)
 541
 542 static inline void
 543 emit_local_symbol (MonoAotCompile *acfg, const char *name, const char *end_label, gboolean func)
 544 {
 545         const char * mangled_symbol_name = name;
 546         char * mangled_symbol_name_alloc = NULL;
 547
 548         if (TRUE == func) {
 549                 mangled_symbol_name_alloc = mangle_symbol_alloc (name);
 550                 mangled_symbol_name = mangled_symbol_name_alloc;
 551         }
 552
 553         if (name != mangled_symbol_name && 0 != g_strcasecmp (name, mangled_symbol_name)) {
 554                 mono_img_writer_emit_label (acfg->w, mangled_symbol_name);
 555         }
 556         mono_img_writer_emit_local_symbol (acfg->w, mangled_symbol_name, end_label, func);
 557
 558         if (NULL != mangled_symbol_name_alloc) {
 559                 g_free (mangled_symbol_name_alloc);
 560         }
 561 }
 562
 563 #else
 564
 565 static inline void
 566 emit_local_symbol (MonoAotCompile *acfg, const char *name, const char *end_label, gboolean func)
 567 {
 568         mono_img_writer_emit_local_symbol (acfg->w, name, end_label, func);
 569 }
 570
 571 #endif
 572
 573 static inline void
 574 emit_label (MonoAotCompile *acfg, const char *name)
 575 {
 576         mono_img_writer_emit_label (acfg->w, name);
 577 }
 578
 579 static inline void
 580 emit_bytes (MonoAotCompile *acfg, const guint8* buf, int size)
 581 {
 582         mono_img_writer_emit_bytes (acfg->w, buf, size);
 583 }
 584
 585 static inline void
 586 emit_string (MonoAotCompile *acfg, const char *value)
 587 {
 588         mono_img_writer_emit_string (acfg->w, value);
 589 }
 590
 591 static inline void
 592 emit_line (MonoAotCompile *acfg)
 593 {
 594         mono_img_writer_emit_line (acfg->w);
 595 }
 596
 597 static inline void
 598 emit_alignment (MonoAotCompile *acfg, int size)
 599 {
 600         mono_img_writer_emit_alignment (acfg->w, size);
 601 }
 602
 603 static inline void
 604 emit_alignment_code (MonoAotCompile *acfg, int size)
 605 {
 606         if (acfg->align_pad_value)
 607                 mono_img_writer_emit_alignment_fill (acfg->w, size, acfg->align_pad_value);
 608         else
 609                 mono_img_writer_emit_alignment (acfg->w, size);
 610 }
 611
 612 static inline void
 613 emit_padding (MonoAotCompile *acfg, int size)
 614 {
 615         int i;
 616         guint8 buf [16];
 617
 618         if (acfg->align_pad_value) {
 619                 for (i = 0; i < 16; ++i)
 620                         buf [i] = acfg->align_pad_value;
 621         } else {
 622                 memset (buf, 0, sizeof (buf));
 623         }
 624
 625         for (i = 0; i < size; i += 16) {
 626                 if (size - i < 16)
 627                         emit_bytes (acfg, buf, size - i);
 628                 else
 629                         emit_bytes (acfg, buf, 16);
 630         }
 631 }
 632
 633 static inline void
 634 emit_pointer (MonoAotCompile *acfg, const char *target)
 635 {
 636         mono_img_writer_emit_pointer (acfg->w, target);
 637 }
 638
 639 static inline void
 640 emit_pointer_2 (MonoAotCompile *acfg, const char *prefix, const char *target)
 641 {
 642         if (prefix [0] != '\0') {
 643                 char *s = g_strdup_printf ("%s%s", prefix, target);
 644                 mono_img_writer_emit_pointer (acfg->w, s);
 645                 g_free (s);
 646         } else {
 647                 mono_img_writer_emit_pointer (acfg->w, target);
 648         }
 649 }
 650
 651 static inline void
 652 emit_int16 (MonoAotCompile *acfg, int value)
 653 {
 654         mono_img_writer_emit_int16 (acfg->w, value);
 655 }
 656
 657 static inline void
 658 emit_int32 (MonoAotCompile *acfg, int value)
 659 {
 660         mono_img_writer_emit_int32 (acfg->w, value);
 661 }
 662
 663 static inline void
 664 emit_symbol_diff (MonoAotCompile *acfg, const char *end, const char* start, int offset)
 665 {
 666         mono_img_writer_emit_symbol_diff (acfg->w, end, start, offset);
 667 }
 668
 669 static inline void
 670 emit_zero_bytes (MonoAotCompile *acfg, int num)
 671 {
 672         mono_img_writer_emit_zero_bytes (acfg->w, num);
 673 }
 674
 675 static inline void
 676 emit_byte (MonoAotCompile *acfg, guint8 val)
 677 {
 678         mono_img_writer_emit_byte (acfg->w, val);
 679 }
 680
 681 #if defined(TARGET_WIN32) && defined(TARGET_X86)
 682
 683 static G_GNUC_UNUSED void
 684 emit_global_inner (MonoAotCompile *acfg, const char *name, gboolean func)
 685 {
 686         const char * mangled_symbol_name = name;
 687         char * mangled_symbol_name_alloc = NULL;
 688
 689         mangled_symbol_name_alloc = mangle_symbol_alloc (name);
 690         mangled_symbol_name = mangled_symbol_name_alloc;
 691
 692         if (0 != g_strcasecmp (name, mangled_symbol_name)) {
 693                 mono_img_writer_emit_label (acfg->w, mangled_symbol_name);
 694         }
 695         mono_img_writer_emit_global (acfg->w, mangled_symbol_name, func);
 696
 697         if (NULL != mangled_symbol_name_alloc) {
 698                 g_free (mangled_symbol_name_alloc);
 699         }
 700 }
 701
 702 #else
 703
 704 static G_GNUC_UNUSED void
 705 emit_global_inner (MonoAotCompile *acfg, const char *name, gboolean func)
 706 {
 707         mono_img_writer_emit_global (acfg->w, name, func);
 708 }
 709
 710 #endif
 711
 712 static inline gboolean
 713 link_shared_library (MonoAotCompile *acfg)
 714 {
 715         return !acfg->aot_opts.static_link && !acfg->aot_opts.asm_only;
 716 }
 717
 718 static inline gboolean
 719 add_to_global_symbol_table (MonoAotCompile *acfg)
 720 {
 721 #ifdef TARGET_WIN32_MSVC
 722         return acfg->aot_opts.no_dlsym || link_shared_library (acfg);
 723 #else
 724         return acfg->aot_opts.no_dlsym;
 725 #endif
 726 }
 727
 728 static void
 729 emit_global (MonoAotCompile *acfg, const char *name, gboolean func)
 730 {
 731         if (add_to_global_symbol_table (acfg))
 732                 g_ptr_array_add (acfg->globals, g_strdup (name));
 733
 734         if (acfg->aot_opts.no_dlsym) {
 735                 mono_img_writer_emit_local_symbol (acfg->w, name, NULL, func);
 736         } else {
 737                 emit_global_inner (acfg, name, func);
 738         }
 739 }
 740
 741 static void
 742 emit_symbol_size (MonoAotCompile *acfg, const char *name, const char *end_label)
 743 {
 744         mono_img_writer_emit_symbol_size (acfg->w, name, end_label);
 745 }
 746
 747 /* Emit a symbol which is referenced by the MonoAotFileInfo structure */
 748 static void
 749 emit_info_symbol (MonoAotCompile *acfg, const char *name)
 750 {
 751         char symbol [MAX_SYMBOL_SIZE];
 752
 753         if (acfg->llvm) {
 754                 emit_label (acfg, name);
 755                 /* LLVM generated code references this */
 756                 sprintf (symbol, "%s%s%s", acfg->user_symbol_prefix, acfg->global_prefix, name);
 757                 emit_label (acfg, symbol);
 758                 emit_global_inner (acfg, symbol, FALSE);
 759         } else {
 760                 emit_label (acfg, name);
 761         }
 762 }
 763
 764 static void
 765 emit_string_symbol (MonoAotCompile *acfg, const char *name, const char *value)
 766 {
 767         if (acfg->llvm) {
 768                 mono_llvm_emit_aot_data (name, (guint8*)value, strlen (value) + 1);
 769                 return;
 770         }
 771
 772         mono_img_writer_emit_section_change (acfg->w, RODATA_SECT, 1);
 773 #ifdef TARGET_MACH
 774         /* On apple, all symbols need to be aligned to avoid warnings from ld */
 775         emit_alignment (acfg, 4);
 776 #endif
 777         mono_img_writer_emit_label (acfg->w, name);
 778         mono_img_writer_emit_string (acfg->w, value);
 779 }
 780
 781 static G_GNUC_UNUSED void
 782 emit_uleb128 (MonoAotCompile *acfg, guint32 value)
 783 {
 784         do {
 785                 guint8 b = value & 0x7f;
 786                 value >>= 7;
 787                 if (value != 0) /* more bytes to come */
 788                         b |= 0x80;
 789                 emit_byte (acfg, b);
 790         } while (value);
 791 }
 792
 793 static G_GNUC_UNUSED void
 794 emit_sleb128 (MonoAotCompile *acfg, gint64 value)
 795 {
 796         gboolean more = 1;
 797         gboolean negative = (value < 0);
 798         guint32 size = 64;
 799         guint8 byte;
 800
 801         while (more) {
 802                 byte = value & 0x7f;
 803                 value >>= 7;
 804                 /* the following is unnecessary if the
 805                  * implementation of >>= uses an arithmetic rather
 806                  * than logical shift for a signed left operand
 807                  */
 808                 if (negative)
 809                         /* sign extend */
 810                         value |= - ((gint64)1 <<(size - 7));
 811                 /* sign bit of byte is second high order bit (0x40) */
 812                 if ((value == 0 && !(byte & 0x40)) ||
 813                         (value == -1 && (byte & 0x40)))
 814                         more = 0;
 815                 else
 816                         byte |= 0x80;
 817                 emit_byte (acfg, byte);
 818         }
 819 }
 820
 821 static G_GNUC_UNUSED void
 822 encode_uleb128 (guint32 value, guint8 *buf, guint8 **endbuf)
 823 {
 824         guint8 *p = buf;
 825
 826         do {
 827                 guint8 b = value & 0x7f;
 828                 value >>= 7;
 829                 if (value != 0) /* more bytes to come */
 830                         b |= 0x80;
 831                 *p ++ = b;
 832         } while (value);
 833
 834         *endbuf = p;
 835 }
 836
 837 static G_GNUC_UNUSED void
 838 encode_sleb128 (gint32 value, guint8 *buf, guint8 **endbuf)
 839 {
 840         gboolean more = 1;
 841         gboolean negative = (value < 0);
 842         guint32 size = 32;
 843         guint8 byte;
 844         guint8 *p = buf;
 845
 846         while (more) {
 847                 byte = value & 0x7f;
 848                 value >>= 7;
 849                 /* the following is unnecessary if the
 850                  * implementation of >>= uses an arithmetic rather
 851                  * than logical shift for a signed left operand
 852                  */
 853                 if (negative)
 854                         /* sign extend */
 855                         value |= - (1 <<(size - 7));
 856                 /* sign bit of byte is second high order bit (0x40) */
 857                 if ((value == 0 && !(byte & 0x40)) ||
 858                         (value == -1 && (byte & 0x40)))
 859                         more = 0;
 860                 else
 861                         byte |= 0x80;
 862                 *p ++= byte;
 863         }
 864
 865         *endbuf = p;
 866 }
 867
 868 static void
 869 encode_int (gint32 val, guint8 *buf, guint8 **endbuf)
 870 {
 871         // FIXME: Big-endian
 872         buf [0] = (val >> 0) & 0xff;
 873         buf [1] = (val >> 8) & 0xff;
 874         buf [2] = (val >> 16) & 0xff;
 875         buf [3] = (val >> 24) & 0xff;
 876
 877         *endbuf = buf + 4;
 878 }
 879
 880 static void
 881 encode_int16 (guint16 val, guint8 *buf, guint8 **endbuf)
 882 {
 883         buf [0] = (val >> 0) & 0xff;
 884         buf [1] = (val >> 8) & 0xff;
 885
 886         *endbuf = buf + 2;
 887 }
 888
 889 static void
 890 encode_string (const char *s, guint8 *buf, guint8 **endbuf)
 891 {
 892         int len = strlen (s);
 893
 894         memcpy (buf, s, len + 1);
 895         *endbuf = buf + len + 1;
 896 }
 897
 898 static void
 899 emit_unset_mode (MonoAotCompile *acfg)
 900 {
 901         mono_img_writer_emit_unset_mode (acfg->w);
 902 }
 903
 904 static G_GNUC_UNUSED void
 905 emit_set_thumb_mode (MonoAotCompile *acfg)
 906 {
 907         emit_unset_mode (acfg);
 908         fprintf (acfg->fp, ".code 16\n");
 909 }
 910
 911 static G_GNUC_UNUSED void
 912 emit_set_arm_mode (MonoAotCompile *acfg)
 913 {
 914         emit_unset_mode (acfg);
 915         fprintf (acfg->fp, ".code 32\n");
 916 }
 917
 918 static inline void
 919 emit_code_bytes (MonoAotCompile *acfg, const guint8* buf, int size)
 920 {
 921 #ifdef TARGET_ARM64
 922         int i;
 923
 924         g_assert (size % 4 == 0);
 925         emit_unset_mode (acfg);
 926         for (i = 0; i < size; i += 4)
 927                 fprintf (acfg->fp, "%s 0x%x\n", acfg->inst_directive, *(guint32*)(buf + i));
 928 #else
 929         emit_bytes (acfg, buf, size);
 930 #endif
 931 }
 932
 933 /* ARCHITECTURE SPECIFIC CODE */
 934
 935 #if defined(TARGET_X86) || defined(TARGET_AMD64) || defined(TARGET_ARM) || defined(TARGET_POWERPC) || defined(TARGET_ARM64)
 936 #define EMIT_DWARF_INFO 1
 937 #endif
 938
 939 #ifdef TARGET_WIN32_MSVC
 940 #undef EMIT_DWARF_INFO
 941 #define EMIT_WIN32_CODEVIEW_INFO
 942 #endif
 943
 944 #ifdef EMIT_WIN32_UNWIND_INFO
 945 static UnwindInfoSectionCacheItem *
 946 get_cached_unwind_info_section_item_win32 (MonoAotCompile *acfg, const char *function_start, const char *function_end, GSList *unwind_ops);
 947
 948 static void
 949 free_unwind_info_section_cache_win32 (MonoAotCompile *acfg);
 950
 951 static void
 952 emit_unwind_info_data_win32 (MonoAotCompile *acfg, PUNWIND_INFO unwind_info);
 953
 954 static void
 955 emit_unwind_info_sections_win32 (MonoAotCompile *acfg, const char *function_start, const char *function_end, GSList *unwind_ops);
 956 #endif
 957
 958 static void
 959 arch_free_unwind_info_section_cache (MonoAotCompile *acfg)
 960 {
 961 #ifdef EMIT_WIN32_UNWIND_INFO
 962         free_unwind_info_section_cache_win32 (acfg);
 963 #endif
 964 }
 965
 966 static void
 967 arch_emit_unwind_info_sections (MonoAotCompile *acfg, const char *function_start, const char *function_end, GSList *unwind_ops)
 968 {
 969 #ifdef EMIT_WIN32_UNWIND_INFO
 970         gboolean own_unwind_ops = FALSE;
 971         if (!unwind_ops) {
 972                 unwind_ops = mono_unwind_get_cie_program ();
 973                 own_unwind_ops = TRUE;
 974         }
 975
 976         emit_unwind_info_sections_win32 (acfg, function_start, function_end, unwind_ops);
 977
 978         if (own_unwind_ops)
 979                 mono_free_unwind_info (unwind_ops);
 980 #endif
 981 }
 982
 983 #if defined(TARGET_ARM)
 984 #define AOT_FUNC_ALIGNMENT 4
 985 #else
 986 #define AOT_FUNC_ALIGNMENT 16
 987 #endif
 988
 989 #if defined(TARGET_POWERPC64) && !defined(__mono_ilp32__)
 990 #define PPC_LD_OP "ld"
 991 #define PPC_LDX_OP "ldx"
 992 #else
 993 #define PPC_LD_OP "lwz"
 994 #define PPC_LDX_OP "lwzx"
 995 #endif
 996
 997 #ifdef TARGET_X86_64_WIN32_MSVC
 998 #define AOT_TARGET_STR "AMD64 (WIN32) (MSVC codegen)"
 999 #elif TARGET_AMD64
1000 #define AOT_TARGET_STR "AMD64"
1001 #endif
1002
1003 #ifdef TARGET_ARM
1004 #ifdef TARGET_MACH
1005 #define AOT_TARGET_STR "ARM (MACH)"
1006 #else
1007 #define AOT_TARGET_STR "ARM (!MACH)"
1008 #endif
1009 #endif
1010
1011 #ifdef TARGET_ARM64
1012 #ifdef TARGET_MACH
1013 #define AOT_TARGET_STR "ARM64 (MACH)"
1014 #else
1015 #define AOT_TARGET_STR "ARM64 (!MACH)"
1016 #endif
1017 #endif
1018
1019 #ifdef TARGET_POWERPC64
1020 #ifdef __mono_ilp32__
1021 #define AOT_TARGET_STR "POWERPC64 (mono ilp32)"
1022 #else
1023 #define AOT_TARGET_STR "POWERPC64 (!mono ilp32)"
1024 #endif
1025 #else
1026 #ifdef TARGET_POWERPC
1027 #ifdef __mono_ilp32__
1028 #define AOT_TARGET_STR "POWERPC (mono ilp32)"
1029 #else
1030 #define AOT_TARGET_STR "POWERPC (!mono ilp32)"
1031 #endif
1032 #endif
1033 #endif
1034
1035 #ifdef TARGET_X86
1036 #ifdef TARGET_WIN32
1037 #define AOT_TARGET_STR "X86 (WIN32)"
1038 #else
1039 #define AOT_TARGET_STR "X86"
1040 #endif
1041 #endif
1042
1043 #ifndef AOT_TARGET_STR
1044 #define AOT_TARGET_STR ""
1045 #endif
1046
1047 static void
1048 arch_init (MonoAotCompile *acfg)
1049 {
1050         acfg->llc_args = g_string_new ("");
1051         acfg->as_args = g_string_new ("");
1052         acfg->llvm_owriter_supported = TRUE;
1053
1054         /*
1055          * The prefix LLVM likes to put in front of symbol names on darwin.
1056          * The mach-os specs require this for globals, but LLVM puts them in front of all
1057          * symbols. We need to handle this, since we need to refer to LLVM generated
1058          * symbols.
1059          */
1060         acfg->llvm_label_prefix = "";
1061         acfg->user_symbol_prefix = "";
1062
1063 #if defined(TARGET_X86)
1064         g_string_append (acfg->llc_args, " -march=x86 -mattr=sse4.1");
1065 #endif
1066
1067 #if defined(TARGET_AMD64)
1068         g_string_append (acfg->llc_args, " -march=x86-64 -mattr=sse4.1");
1069         /* NOP */
1070         acfg->align_pad_value = 0x90;
1071 #endif
1072
1073 #ifdef TARGET_ARM
1074         if (acfg->aot_opts.mtriple && strstr (acfg->aot_opts.mtriple, "darwin")) {
1075                 g_string_append (acfg->llc_args, "-mattr=+v6");
1076         } else {
1077 #if defined(ARM_FPU_VFP_HARD)
1078                 g_string_append (acfg->llc_args, " -mattr=+vfp2,-neon,+d16 -float-abi=hard");
1079                 g_string_append (acfg->as_args, " -mfpu=vfp3");
1080 #elif defined(ARM_FPU_VFP)
1081                 g_string_append (acfg->llc_args, " -mattr=+vfp2,-neon,+d16");
1082                 g_string_append (acfg->as_args, " -mfpu=vfp3");
1083 #else
1084                 g_string_append (acfg->llc_args, " -soft-float");
1085 #endif
1086         }
1087         if (acfg->aot_opts.mtriple && strstr (acfg->aot_opts.mtriple, "thumb"))
1088                 acfg->thumb_mixed = TRUE;
1089
1090         if (acfg->aot_opts.mtriple)
1091                 mono_arch_set_target (acfg->aot_opts.mtriple);
1092 #endif
1093
1094 #ifdef TARGET_ARM64
1095         acfg->inst_directive = ".inst";
1096         if (acfg->aot_opts.mtriple)
1097                 mono_arch_set_target (acfg->aot_opts.mtriple);
1098 #endif
1099
1100 #ifdef TARGET_MACH
1101         acfg->user_symbol_prefix = "_";
1102         acfg->llvm_label_prefix = "_";
1103         acfg->inst_directive = ".word";
1104         acfg->need_no_dead_strip = TRUE;
1105         acfg->aot_opts.gnu_asm = TRUE;
1106 #endif
1107
1108 #if defined(__linux__) && !defined(TARGET_ARM)
1109         acfg->need_pt_gnu_stack = TRUE;
1110 #endif
1111
1112 #ifdef MONOTOUCH
1113         acfg->global_symbols = TRUE;
1114 #endif
1115
1116 #ifdef TARGET_ANDROID
1117         acfg->llvm_owriter_supported = FALSE;
1118 #endif
1119 }
1120
1121 #ifdef TARGET_ARM64
1122
1123
1124 /* Load the contents of GOT_SLOT into dreg, clobbering ip0 */
1125 static void
1126 arm64_emit_load_got_slot (MonoAotCompile *acfg, int dreg, int got_slot)
1127 {
1128         int offset;
1129
1130         g_assert (acfg->fp);
1131         emit_unset_mode (acfg);
1132         /* r16==ip0 */
1133         offset = (int)(got_slot * sizeof (gpointer));
1134 #ifdef TARGET_MACH
1135         /* clang's integrated assembler */
1136         fprintf (acfg->fp, "adrp x16, %s@PAGE+%d\n", acfg->got_symbol, offset & 0xfffff000);
1137         fprintf (acfg->fp, "add x16, x16, %s@PAGEOFF\n", acfg->got_symbol);
1138         fprintf (acfg->fp, "ldr x%d, [x16, #%d]\n", dreg, offset & 0xfff);
1139 #else
1140         /* Linux GAS */
1141         fprintf (acfg->fp, "adrp x16, %s+%d\n", acfg->got_symbol, offset & 0xfffff000);
1142         fprintf (acfg->fp, "add x16, x16, :lo12:%s\n", acfg->got_symbol);
1143         fprintf (acfg->fp, "ldr x%d, [x16, %d]\n", dreg, offset & 0xfff);
1144 #endif
1145 }
1146
1147 static void
1148 arm64_emit_objc_selector_ref (MonoAotCompile *acfg, guint8 *code, int index, int *code_size)
1149 {
1150         int reg;
1151
1152         g_assert (acfg->fp);
1153         emit_unset_mode (acfg);
1154
1155         /* ldr rt, target */
1156         reg = arm_get_ldr_lit_reg (code);
1157
1158         fprintf (acfg->fp, "adrp x%d, L_OBJC_SELECTOR_REFERENCES_%d@PAGE\n", reg, index);
1159         fprintf (acfg->fp, "add x%d, x%d, L_OBJC_SELECTOR_REFERENCES_%d@PAGEOFF\n", reg, reg, index);
1160         fprintf (acfg->fp, "ldr x%d, [x%d]\n", reg, reg);
1161
1162         *code_size = 12;
1163 }
1164
1165 static void
1166 arm64_emit_direct_call (MonoAotCompile *acfg, const char *target, gboolean external, gboolean thumb, MonoJumpInfo *ji, int *call_size)
1167 {
1168         g_assert (acfg->fp);
1169         emit_unset_mode (acfg);
1170         if (ji && ji->relocation == MONO_R_ARM64_B) {
1171                 fprintf (acfg->fp, "b %s\n", target);
1172         } else {
1173                 if (ji)
1174                         g_assert (ji->relocation == MONO_R_ARM64_BL);
1175                 fprintf (acfg->fp, "bl %s\n", target);
1176         }
1177         *call_size = 4;
1178 }
1179
1180 static void
1181 arm64_emit_got_access (MonoAotCompile *acfg, guint8 *code, int got_slot, int *code_size)
1182 {
1183         int reg;
1184
1185         /* ldr rt, target */
1186         reg = arm_get_ldr_lit_reg (code);
1187         arm64_emit_load_got_slot (acfg, reg, got_slot);
1188         *code_size = 12;
1189 }
1190
1191 static void
1192 arm64_emit_plt_entry (MonoAotCompile *acfg, const char *got_symbol, int offset, int info_offset)
1193 {
1194         arm64_emit_load_got_slot (acfg, ARMREG_R16, offset / sizeof (gpointer));
1195         fprintf (acfg->fp, "br x16\n");
1196         /* Used by mono_aot_get_plt_info_offset () */
1197         fprintf (acfg->fp, "%s %d\n", acfg->inst_directive, info_offset);
1198 }
1199
1200 static void
1201 arm64_emit_tramp_page_common_code (MonoAotCompile *acfg, int pagesize, int arg_reg, int *size)
1202 {
1203         guint8 buf [256];
1204         guint8 *code;
1205         int imm;
1206
1207         /* The common code */
1208         code = buf;
1209         imm = pagesize;
1210         /* The trampoline address is in IP0 */
1211         arm_movzx (code, ARMREG_IP1, imm & 0xffff, 0);
1212         arm_movkx (code, ARMREG_IP1, (imm >> 16) & 0xffff, 16);
1213         /* Compute the data slot address */
1214         arm_subx (code, ARMREG_IP0, ARMREG_IP0, ARMREG_IP1);
1215         /* Trampoline argument */
1216         arm_ldrx (code, arg_reg, ARMREG_IP0, 0);
1217         /* Address */
1218         arm_ldrx (code, ARMREG_IP0, ARMREG_IP0, 8);
1219         arm_brx (code, ARMREG_IP0);
1220
1221         /* Emit it */
1222         emit_code_bytes (acfg, buf, code - buf);
1223
1224         *size = code - buf;
1225 }
1226
1227 static void
1228 arm64_emit_tramp_page_specific_code (MonoAotCompile *acfg, int pagesize, int common_tramp_size, int specific_tramp_size)
1229 {
1230         guint8 buf [256];
1231         guint8 *code;
1232         int i, count;
1233
1234         count = (pagesize - common_tramp_size) / specific_tramp_size;
1235         for (i = 0; i < count; ++i) {
1236                 code = buf;
1237                 arm_adrx (code, ARMREG_IP0, code);
1238                 /* Branch to the generic code */
1239                 arm_b (code, code - 4 - (i * specific_tramp_size) - common_tramp_size);
1240                 /* This has to be 2 pointers long */
1241                 arm_nop (code);
1242                 arm_nop (code);
1243                 g_assert (code - buf == specific_tramp_size);
1244                 emit_code_bytes (acfg, buf, code - buf);
1245         }
1246 }
1247
1248 static void
1249 arm64_emit_specific_trampoline_pages (MonoAotCompile *acfg)
1250 {
1251         guint8 buf [128];
1252         guint8 *code;
1253         guint8 *labels [16];
1254         int common_tramp_size;
1255         int specific_tramp_size = 2 * 8;
1256         int imm, pagesize;
1257         char symbol [128];
1258
1259         if (!acfg->aot_opts.use_trampolines_page)
1260                 return;
1261
1262 #ifdef TARGET_MACH
1263         /* Have to match the target pagesize */
1264         pagesize = 16384;
1265 #else
1266         pagesize = mono_pagesize ();
1267 #endif
1268         acfg->tramp_page_size = pagesize;
1269
1270         /* The specific trampolines */
1271         sprintf (symbol, "%sspecific_trampolines_page", acfg->user_symbol_prefix);
1272         emit_alignment (acfg, pagesize);
1273         emit_global (acfg, symbol, TRUE);
1274         emit_label (acfg, symbol);
1275
1276         /* The common code */
1277         arm64_emit_tramp_page_common_code (acfg, pagesize, ARMREG_IP1, &common_tramp_size);
1278         acfg->tramp_page_code_offsets [MONO_AOT_TRAMP_SPECIFIC] = common_tramp_size;
1279
1280         arm64_emit_tramp_page_specific_code (acfg, pagesize, common_tramp_size, specific_tramp_size);
1281
1282         /* The rgctx trampolines */
1283         /* These are the same as the specific trampolines, but they load the argument into MONO_ARCH_RGCTX_REG */
1284         sprintf (symbol, "%srgctx_trampolines_page", acfg->user_symbol_prefix);
1285         emit_alignment (acfg, pagesize);
1286         emit_global (acfg, symbol, TRUE);
1287         emit_label (acfg, symbol);
1288
1289         /* The common code */
1290         arm64_emit_tramp_page_common_code (acfg, pagesize, MONO_ARCH_RGCTX_REG, &common_tramp_size);
1291         acfg->tramp_page_code_offsets [MONO_AOT_TRAMP_STATIC_RGCTX] = common_tramp_size;
1292
1293         arm64_emit_tramp_page_specific_code (acfg, pagesize, common_tramp_size, specific_tramp_size);
1294
1295         /* The gsharedvt arg trampolines */
1296         /* These are the same as the specific trampolines */
1297         sprintf (symbol, "%sgsharedvt_arg_trampolines_page", acfg->user_symbol_prefix);
1298         emit_alignment (acfg, pagesize);
1299         emit_global (acfg, symbol, TRUE);
1300         emit_label (acfg, symbol);
1301
1302         arm64_emit_tramp_page_common_code (acfg, pagesize, ARMREG_IP1, &common_tramp_size);
1303         acfg->tramp_page_code_offsets [MONO_AOT_TRAMP_GSHAREDVT_ARG] = common_tramp_size;
1304
1305         arm64_emit_tramp_page_specific_code (acfg, pagesize, common_tramp_size, specific_tramp_size);
1306
1307         /* The IMT trampolines */
1308         sprintf (symbol, "%simt_trampolines_page", acfg->user_symbol_prefix);
1309         emit_alignment (acfg, pagesize);
1310         emit_global (acfg, symbol, TRUE);
1311         emit_label (acfg, symbol);
1312
1313         code = buf;
1314         imm = pagesize;
1315         /* The trampoline address is in IP0 */
1316         arm_movzx (code, ARMREG_IP1, imm & 0xffff, 0);
1317         arm_movkx (code, ARMREG_IP1, (imm >> 16) & 0xffff, 16);
1318         /* Compute the data slot address */
1319         arm_subx (code, ARMREG_IP0, ARMREG_IP0, ARMREG_IP1);
1320         /* Trampoline argument */
1321         arm_ldrx (code, ARMREG_IP1, ARMREG_IP0, 0);
1322
1323         /* Same as arch_emit_imt_trampoline () */
1324         labels [0] = code;
1325         arm_ldrx (code, ARMREG_IP0, ARMREG_IP1, 0);
1326         arm_cmpx (code, ARMREG_IP0, MONO_ARCH_RGCTX_REG);
1327         labels [1] = code;
1328         arm_bcc (code, ARMCOND_EQ, 0);
1329
1330         /* End-of-loop check */
1331         labels [2] = code;
1332         arm_cbzx (code, ARMREG_IP0, 0);
1333
1334         /* Loop footer */
1335         arm_addx_imm (code, ARMREG_IP1, ARMREG_IP1, 2 * 8);
1336         arm_b (code, labels [0]);
1337
1338         /* Match */
1339         mono_arm_patch (labels [1], code, MONO_R_ARM64_BCC);
1340         /* Load vtable slot addr */
1341         arm_ldrx (code, ARMREG_IP0, ARMREG_IP1, 8);
1342         /* Load vtable slot */
1343         arm_ldrx (code, ARMREG_IP0, ARMREG_IP0, 0);
1344         arm_brx (code, ARMREG_IP0);
1345
1346         /* No match */
1347         mono_arm_patch (labels [2], code, MONO_R_ARM64_CBZ);
1348         /* Load fail addr */
1349         arm_ldrx (code, ARMREG_IP0, ARMREG_IP1, 8);
1350         arm_brx (code, ARMREG_IP0);
1351
1352         emit_code_bytes (acfg, buf, code - buf);
1353
1354         common_tramp_size = code - buf;
1355         acfg->tramp_page_code_offsets [MONO_AOT_TRAMP_IMT] = common_tramp_size;
1356
1357         arm64_emit_tramp_page_specific_code (acfg, pagesize, common_tramp_size, specific_tramp_size);
1358 }
1359
1360 static void
1361 arm64_emit_specific_trampoline (MonoAotCompile *acfg, int offset, int *tramp_size)
1362 {
1363         /* Load argument from second GOT slot */
1364         arm64_emit_load_got_slot (acfg, ARMREG_R17, offset + 1);
1365         /* Load generic trampoline address from first GOT slot */
1366         arm64_emit_load_got_slot (acfg, ARMREG_R16, offset);
1367         fprintf (acfg->fp, "br x16\n");
1368         *tramp_size = 7 * 4;
1369 }
1370
1371 static void
1372 arm64_emit_unbox_trampoline (MonoAotCompile *acfg, MonoCompile *cfg, MonoMethod *method, const char *call_target)
1373 {
1374         emit_unset_mode (acfg);
1375         fprintf (acfg->fp, "add x0, x0, %d\n", (int)(sizeof (MonoObject)));
1376         fprintf (acfg->fp, "b %s\n", call_target);
1377 }
1378
1379 static void
1380 arm64_emit_static_rgctx_trampoline (MonoAotCompile *acfg, int offset, int *tramp_size)
1381 {
1382         /* Similar to the specific trampolines, but use the rgctx reg instead of ip1 */
1383
1384         /* Load argument from first GOT slot */
1385         arm64_emit_load_got_slot (acfg, MONO_ARCH_RGCTX_REG, offset);
1386         /* Load generic trampoline address from second GOT slot */
1387         arm64_emit_load_got_slot (acfg, ARMREG_R16, offset + 1);
1388         fprintf (acfg->fp, "br x16\n");
1389         *tramp_size = 7 * 4;
1390 }
1391
1392 static void
1393 arm64_emit_imt_trampoline (MonoAotCompile *acfg, int offset, int *tramp_size)
1394 {
1395         guint8 buf [128];
1396         guint8 *code, *labels [16];
1397
1398         /* Load parameter from GOT slot into ip1 */
1399         arm64_emit_load_got_slot (acfg, ARMREG_R17, offset);
1400
1401         code = buf;
1402         labels [0] = code;
1403         arm_ldrx (code, ARMREG_IP0, ARMREG_IP1, 0);
1404         arm_cmpx (code, ARMREG_IP0, MONO_ARCH_RGCTX_REG);
1405         labels [1] = code;
1406         arm_bcc (code, ARMCOND_EQ, 0);
1407
1408         /* End-of-loop check */
1409         labels [2] = code;
1410         arm_cbzx (code, ARMREG_IP0, 0);
1411
1412         /* Loop footer */
1413         arm_addx_imm (code, ARMREG_IP1, ARMREG_IP1, 2 * 8);
1414         arm_b (code, labels [0]);
1415
1416         /* Match */
1417         mono_arm_patch (labels [1], code, MONO_R_ARM64_BCC);
1418         /* Load vtable slot addr */
1419         arm_ldrx (code, ARMREG_IP0, ARMREG_IP1, 8);
1420         /* Load vtable slot */
1421         arm_ldrx (code, ARMREG_IP0, ARMREG_IP0, 0);
1422         arm_brx (code, ARMREG_IP0);
1423
1424         /* No match */
1425         mono_arm_patch (labels [2], code, MONO_R_ARM64_CBZ);
1426         /* Load fail addr */
1427         arm_ldrx (code, ARMREG_IP0, ARMREG_IP1, 8);
1428         arm_brx (code, ARMREG_IP0);
1429
1430         emit_code_bytes (acfg, buf, code - buf);
1431
1432         *tramp_size = code - buf + (3 * 4);
1433 }
1434
1435 static void
1436 arm64_emit_gsharedvt_arg_trampoline (MonoAotCompile *acfg, int offset, int *tramp_size)
1437 {
1438         /* Similar to the specific trampolines, but the address is in the second slot */
1439         /* Load argument from first GOT slot */
1440         arm64_emit_load_got_slot (acfg, ARMREG_R17, offset);
1441         /* Load generic trampoline address from second GOT slot */
1442         arm64_emit_load_got_slot (acfg, ARMREG_R16, offset + 1);
1443         fprintf (acfg->fp, "br x16\n");
1444         *tramp_size = 7 * 4;
1445 }
1446
1447
1448 #endif
1449
1450 #ifdef MONO_ARCH_AOT_SUPPORTED
1451 /*
1452  * arch_emit_direct_call:
1453  *
1454  *   Emit a direct call to the symbol TARGET. CALL_SIZE is set to the size of the
1455  * calling code.
1456  */
1457 static void
1458 arch_emit_direct_call (MonoAotCompile *acfg, const char *target, gboolean external, gboolean thumb, MonoJumpInfo *ji, int *call_size)
1459 {
1460 #if defined(TARGET_X86) || defined(TARGET_AMD64)
1461         /* Need to make sure this is exactly 5 bytes long */
1462         emit_unset_mode (acfg);
1463         fprintf (acfg->fp, "call %s\n", target);
1464         *call_size = 5;
1465 #elif defined(TARGET_ARM)
1466         emit_unset_mode (acfg);
1467         if (thumb)
1468                 fprintf (acfg->fp, "blx %s\n", target);
1469         else
1470                 fprintf (acfg->fp, "bl %s\n", target);
1471         *call_size = 4;
1472 #elif defined(TARGET_ARM64)
1473         arm64_emit_direct_call (acfg, target, external, thumb, ji, call_size);
1474 #elif defined(TARGET_POWERPC)
1475         emit_unset_mode (acfg);
1476         fprintf (acfg->fp, "bl %s\n", target);
1477         *call_size = 4;
1478 #else
1479         g_assert_not_reached ();
1480 #endif
1481 }
1482 #endif
1483
1484 /*
1485  * PPC32 design:
1486  * - we use an approach similar to the x86 abi: reserve a register (r30) to hold
1487  *   the GOT pointer.
1488  * - The full-aot trampolines need access to the GOT of mscorlib, so we store
1489  *   in in the 2. slot of every GOT, and require every method to place the GOT
1490  *   address in r30, even when it doesn't access the GOT otherwise. This way,
1491  *   the trampolines can compute the mscorlib GOT address by loading 4(r30).
1492  */
1493
1494 /*
1495  * PPC64 design:
1496  * PPC64 uses function descriptors which greatly complicate all code, since
1497  * these are used very inconsistently in the runtime. Some functions like
1498  * mono_compile_method () return ftn descriptors, while others like the
1499  * trampoline creation functions do not.
1500  * We assume that all GOT slots contain function descriptors, and create
1501  * descriptors in aot-runtime.c when needed.
1502  * The ppc64 abi uses r2 to hold the address of the TOC/GOT, which is loaded
1503  * from function descriptors, we could do the same, but it would require
1504  * rewriting all the ppc/aot code to handle function descriptors properly.
1505  * So instead, we use the same approach as on PPC32.
1506  * This is a horrible mess, but fixing it would probably lead to an even bigger
1507  * one.
1508  */
1509
1510 /*
1511  * X86 design:
1512  * - similar to the PPC32 design, we reserve EBX to hold the GOT pointer.
1513  */
1514
1515 #ifdef MONO_ARCH_AOT_SUPPORTED
1516 /*
1517  * arch_emit_got_offset:
1518  *
1519  *   The memory pointed to by CODE should hold native code for computing the GOT
1520  * address (OP_LOAD_GOTADDR). Emit this code while patching it with the offset
1521  * between code and the GOT. CODE_SIZE is set to the number of bytes emitted.
1522  */
1523 static void
1524 arch_emit_got_offset (MonoAotCompile *acfg, guint8 *code, int *code_size)
1525 {
1526 #if defined(TARGET_POWERPC64)
1527         emit_unset_mode (acfg);
1528         /*
1529          * The ppc32 code doesn't seem to work on ppc64, the assembler complains about
1530          * unsupported relocations. So we store the got address into the .Lgot_addr
1531          * symbol which is in the text segment, compute its address, and load it.
1532          */
1533         fprintf (acfg->fp, ".L%d:\n", acfg->label_generator);
1534         fprintf (acfg->fp, "lis 0, (.Lgot_addr + 4 - .L%d)@h\n", acfg->label_generator);
1535         fprintf (acfg->fp, "ori 0, 0, (.Lgot_addr + 4 - .L%d)@l\n", acfg->label_generator);
1536         fprintf (acfg->fp, "add 30, 30, 0\n");
1537         fprintf (acfg->fp, "%s 30, 0(30)\n", PPC_LD_OP);
1538         acfg->label_generator ++;
1539         *code_size = 16;
1540 #elif defined(TARGET_POWERPC)
1541         emit_unset_mode (acfg);
1542         fprintf (acfg->fp, ".L%d:\n", acfg->label_generator);
1543         fprintf (acfg->fp, "lis 0, (%s + 4 - .L%d)@h\n", acfg->got_symbol, acfg->label_generator);
1544         fprintf (acfg->fp, "ori 0, 0, (%s + 4 - .L%d)@l\n", acfg->got_symbol, acfg->label_generator);
1545         acfg->label_generator ++;
1546         *code_size = 8;
1547 #else
1548         guint32 offset = mono_arch_get_patch_offset (code);
1549         emit_bytes (acfg, code, offset);
1550         emit_symbol_diff (acfg, acfg->got_symbol, ".", offset);
1551
1552         *code_size = offset + 4;
1553 #endif
1554 }
1555
1556 /*
1557  * arch_emit_got_access:
1558  *
1559  *   The memory pointed to by CODE should hold native code for loading a GOT
1560  * slot (OP_AOTCONST/OP_GOT_ENTRY). Emit this code while patching it so it accesses the
1561  * GOT slot GOT_SLOT. CODE_SIZE is set to the number of bytes emitted.
1562  */
1563 static void
1564 arch_emit_got_access (MonoAotCompile *acfg, const char *got_symbol, guint8 *code, int got_slot, int *code_size)
1565 {
1566 #ifdef TARGET_AMD64
1567         /* mov reg, got+offset(%rip) */
1568         if (acfg->llvm) {
1569                 /* The GOT symbol is in the LLVM module, the clang assembler has problems emitting symbol diffs for it */
1570                 int dreg;
1571                 int rex_r;
1572
1573                 /* Decode reg, see amd64_mov_reg_membase () */
1574                 rex_r = code [0] & AMD64_REX_R;
1575                 g_assert (code [0] == 0x49 + rex_r);
1576                 g_assert (code [1] == 0x8b);
1577                 dreg = ((code [2] >> 3) & 0x7) + (rex_r ? 8 : 0);
1578
1579                 emit_unset_mode (acfg);
1580                 fprintf (acfg->fp, "mov %s+%d(%%rip), %s\n", got_symbol, (unsigned int) ((got_slot * sizeof (gpointer))), mono_arch_regname (dreg));
1581                 *code_size = 7;
1582         } else {
1583                 emit_bytes (acfg, code, mono_arch_get_patch_offset (code));
1584                 emit_symbol_diff (acfg, got_symbol, ".", (unsigned int) ((got_slot * sizeof (gpointer)) - 4));
1585                 *code_size = mono_arch_get_patch_offset (code) + 4;
1586         }
1587 #elif defined(TARGET_X86)
1588         emit_bytes (acfg, code, mono_arch_get_patch_offset (code));
1589         emit_int32 (acfg, (unsigned int) ((got_slot * sizeof (gpointer))));
1590         *code_size = mono_arch_get_patch_offset (code) + 4;
1591 #elif defined(TARGET_ARM)
1592         emit_bytes (acfg, code, mono_arch_get_patch_offset (code));
1593         emit_symbol_diff (acfg, got_symbol, ".", (unsigned int) ((got_slot * sizeof (gpointer))) - 12);
1594         *code_size = mono_arch_get_patch_offset (code) + 4;
1595 #elif defined(TARGET_ARM64)
1596         emit_bytes (acfg, code, mono_arch_get_patch_offset (code));
1597         arm64_emit_got_access (acfg, code, got_slot, code_size);
1598 #elif defined(TARGET_POWERPC)
1599         {
1600                 guint8 buf [32];
1601
1602                 emit_bytes (acfg, code, mono_arch_get_patch_offset (code));
1603                 code = buf;
1604                 ppc_load32 (code, ppc_r0, got_slot * sizeof (gpointer));
1605                 g_assert (code - buf == 8);
1606                 emit_bytes (acfg, buf, code - buf);
1607                 *code_size = code - buf;
1608         }
1609 #else
1610         g_assert_not_reached ();
1611 #endif
1612 }
1613
1614 #endif
1615
1616 #ifdef MONO_ARCH_AOT_SUPPORTED
1617 /*
1618  * arch_emit_objc_selector_ref:
1619  *
1620  *   Emit the implementation of OP_OBJC_GET_SELECTOR, which itself implements @selector(foo:) in objective-c.
1621  */
1622 static void
1623 arch_emit_objc_selector_ref (MonoAotCompile *acfg, guint8 *code, int index, int *code_size)
1624 {
1625 #if defined(TARGET_ARM)
1626         char symbol1 [MAX_SYMBOL_SIZE];
1627         char symbol2 [MAX_SYMBOL_SIZE];
1628         int lindex = acfg->objc_selector_index_2 ++;
1629
1630         /* Emit ldr.imm/b */
1631         emit_bytes (acfg, code, 8);
1632
1633         sprintf (symbol1, "L_OBJC_SELECTOR_%d", lindex);
1634         sprintf (symbol2, "L_OBJC_SELECTOR_REFERENCES_%d", index);
1635
1636         emit_label (acfg, symbol1);
1637         mono_img_writer_emit_unset_mode (acfg->w);
1638         fprintf (acfg->fp, ".long %s-(%s+12)", symbol2, symbol1);
1639
1640         *code_size = 12;
1641 #elif defined(TARGET_ARM64)
1642         arm64_emit_objc_selector_ref (acfg, code, index, code_size);
1643 #else
1644         g_assert_not_reached ();
1645 #endif
1646 }
1647 #endif
1648
1649 /*
1650  * arch_emit_plt_entry:
1651  *
1652  *   Emit code for the PLT entry.
1653  * The plt entry should look like this:
1654  * <indirect jump to GOT_SYMBOL + OFFSET>
1655  * <INFO_OFFSET embedded into the instruction stream>
1656  */
1657 static void
1658 arch_emit_plt_entry (MonoAotCompile *acfg, const char *got_symbol, int offset, int info_offset)
1659 {
1660 #if defined(TARGET_X86)
1661                 /* jmp *<offset>(%ebx) */
1662                 emit_byte (acfg, 0xff);
1663                 emit_byte (acfg, 0xa3);
1664                 emit_int32 (acfg, offset);
1665                 /* Used by mono_aot_get_plt_info_offset */
1666                 emit_int32 (acfg, info_offset);
1667 #elif defined(TARGET_AMD64)
1668                 emit_unset_mode (acfg);
1669                 fprintf (acfg->fp, "jmp *%s+%d(%%rip)\n", got_symbol, offset);
1670                 /* Used by mono_aot_get_plt_info_offset */
1671                 emit_int32 (acfg, info_offset);
1672                 acfg->stats.plt_size += 10;
1673 #elif defined(TARGET_ARM)
1674                 guint8 buf [256];
1675                 guint8 *code;
1676
1677                 code = buf;
1678                 ARM_LDR_IMM (code, ARMREG_IP, ARMREG_PC, 0);
1679                 ARM_LDR_REG_REG (code, ARMREG_PC, ARMREG_PC, ARMREG_IP);
1680                 emit_bytes (acfg, buf, code - buf);
1681                 emit_symbol_diff (acfg, got_symbol, ".", offset - 4);
1682                 /* Used by mono_aot_get_plt_info_offset */
1683                 emit_int32 (acfg, info_offset);
1684 #elif defined(TARGET_ARM64)
1685                 arm64_emit_plt_entry (acfg, got_symbol, offset, info_offset);
1686 #elif defined(TARGET_POWERPC)
1687                 /* The GOT address is guaranteed to be in r30 by OP_LOAD_GOTADDR */
1688                 emit_unset_mode (acfg);
1689                 fprintf (acfg->fp, "lis 11, %d@h\n", offset);
1690                 fprintf (acfg->fp, "ori 11, 11, %d@l\n", offset);
1691                 fprintf (acfg->fp, "add 11, 11, 30\n");
1692                 fprintf (acfg->fp, "%s 11, 0(11)\n", PPC_LD_OP);
1693 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
1694                 fprintf (acfg->fp, "%s 2, %d(11)\n", PPC_LD_OP, (int)sizeof (gpointer));
1695                 fprintf (acfg->fp, "%s 11, 0(11)\n", PPC_LD_OP);
1696 #endif
1697                 fprintf (acfg->fp, "mtctr 11\n");
1698                 fprintf (acfg->fp, "bctr\n");
1699                 emit_int32 (acfg, info_offset);
1700 #else
1701                 g_assert_not_reached ();
1702 #endif
1703 }
1704
1705 /*
1706  * arch_emit_llvm_plt_entry:
1707  *
1708  *   Same as arch_emit_plt_entry, but handles calls from LLVM generated code.
1709  * This is only needed on arm to handle thumb interop.
1710  */
1711 static void
1712 arch_emit_llvm_plt_entry (MonoAotCompile *acfg, const char *got_symbol, int offset, int info_offset)
1713 {
1714 #if defined(TARGET_ARM)
1715         /* LLVM calls the PLT entries using bl, so these have to be thumb2 */
1716         /* The caller already transitioned to thumb */
1717         /* The code below should be 12 bytes long */
1718         /* clang has trouble encoding these instructions, so emit the binary */
1719 #if 0
1720         fprintf (acfg->fp, "ldr ip, [pc, #8]\n");
1721         /* thumb can't encode ld pc, [pc, ip] */
1722         fprintf (acfg->fp, "add ip, pc, ip\n");
1723         fprintf (acfg->fp, "ldr ip, [ip, #0]\n");
1724         fprintf (acfg->fp, "bx ip\n");
1725 #endif
1726         emit_set_thumb_mode (acfg);
1727         fprintf (acfg->fp, ".4byte 0xc008f8df\n");
1728         fprintf (acfg->fp, ".2byte 0x44fc\n");
1729         fprintf (acfg->fp, ".4byte 0xc000f8dc\n");
1730         fprintf (acfg->fp, ".2byte 0x4760\n");
1731         emit_symbol_diff (acfg, got_symbol, ".", offset + 4);
1732         emit_int32 (acfg, info_offset);
1733         emit_unset_mode (acfg);
1734         emit_set_arm_mode (acfg);
1735 #else
1736         g_assert_not_reached ();
1737 #endif
1738 }
1739
1740 /* Save unwind_info in the module and emit the offset to the information at symbol */
1741 static void save_unwind_info (MonoAotCompile *acfg, char *symbol, GSList *unwind_ops)
1742 {
1743         guint32 uw_offset, encoded_len;
1744         guint8 *encoded;
1745
1746         emit_section_change (acfg, RODATA_SECT, 0);
1747         emit_global (acfg, symbol, FALSE);
1748         emit_label (acfg, symbol);
1749
1750         encoded = mono_unwind_ops_encode (unwind_ops, &encoded_len);
1751         uw_offset = get_unwind_info_offset (acfg, encoded, encoded_len);
1752         g_free (encoded);
1753         emit_int32 (acfg, uw_offset);
1754 }
1755
1756 /*
1757  * arch_emit_specific_trampoline_pages:
1758  *
1759  * Emits a page full of trampolines: each trampoline uses its own address to
1760  * lookup both the generic trampoline code and the data argument.
1761  * This page can be remapped in process multiple times so we can get an
1762  * unlimited number of trampolines.
1763  * Specifically this implementation uses the following trick: two memory pages
1764  * are allocated, with the first containing the data and the second containing the trampolines.
1765  * To reduce trampoline size, each trampoline jumps at the start of the page where a common
1766  * implementation does all the lifting.
1767  * Note that the ARM single trampoline size is 8 bytes, exactly like the data that needs to be stored
1768  * on the arm 32 bit system.
1769  */
1770 static void
1771 arch_emit_specific_trampoline_pages (MonoAotCompile *acfg)
1772 {
1773 #if defined(TARGET_ARM)
1774         guint8 buf [128];
1775         guint8 *code;
1776         guint8 *loop_start, *loop_branch_back, *loop_end_check, *imt_found_check;
1777         int i;
1778         int pagesize = MONO_AOT_TRAMP_PAGE_SIZE;
1779         GSList *unwind_ops = NULL;
1780 #define COMMON_TRAMP_SIZE 16
1781         int count = (pagesize - COMMON_TRAMP_SIZE) / 8;
1782         int imm8, rot_amount;
1783         char symbol [128];
1784
1785         if (!acfg->aot_opts.use_trampolines_page)
1786                 return;
1787
1788         acfg->tramp_page_size = pagesize;
1789
1790         sprintf (symbol, "%sspecific_trampolines_page", acfg->user_symbol_prefix);
1791         emit_alignment (acfg, pagesize);
1792         emit_global (acfg, symbol, TRUE);
1793         emit_label (acfg, symbol);
1794
1795         /* emit the generic code first, the trampoline address + 8 is in the lr register */
1796         code = buf;
1797         imm8 = mono_arm_is_rotated_imm8 (pagesize, &rot_amount);
1798         ARM_SUB_REG_IMM (code, ARMREG_LR, ARMREG_LR, imm8, rot_amount);
1799         ARM_LDR_IMM (code, ARMREG_R1, ARMREG_LR, -8);
1800         ARM_LDR_IMM (code, ARMREG_PC, ARMREG_LR, -4);
1801         ARM_NOP (code);
1802         g_assert (code - buf == COMMON_TRAMP_SIZE);
1803
1804         /* Emit it */
1805         emit_bytes (acfg, buf, code - buf);
1806
1807         for (i = 0; i < count; ++i) {
1808                 code = buf;
1809                 ARM_PUSH (code, 0x5fff);
1810                 ARM_BL (code, 0);
1811                 arm_patch (code - 4, code - COMMON_TRAMP_SIZE - 8 * (i + 1));
1812                 g_assert (code - buf == 8);
1813                 emit_bytes (acfg, buf, code - buf);
1814         }
1815
1816         /* now the rgctx trampolines: each specific trampolines puts in the ip register
1817          * the instruction pointer address, so the generic trampoline at the start of the page
1818          * subtracts 4096 to get to the data page and loads the values
1819          * We again fit the generic trampiline in 16 bytes.
1820          */
1821         sprintf (symbol, "%srgctx_trampolines_page", acfg->user_symbol_prefix);
1822         emit_global (acfg, symbol, TRUE);
1823         emit_label (acfg, symbol);
1824         code = buf;
1825         imm8 = mono_arm_is_rotated_imm8 (pagesize, &rot_amount);
1826         ARM_SUB_REG_IMM (code, ARMREG_IP, ARMREG_IP, imm8, rot_amount);
1827         ARM_LDR_IMM (code, MONO_ARCH_RGCTX_REG, ARMREG_IP, -8);
1828         ARM_LDR_IMM (code, ARMREG_PC, ARMREG_IP, -4);
1829         ARM_NOP (code);
1830         g_assert (code - buf == COMMON_TRAMP_SIZE);
1831
1832         /* Emit it */
1833         emit_bytes (acfg, buf, code - buf);
1834
1835         for (i = 0; i < count; ++i) {
1836                 code = buf;
1837                 ARM_MOV_REG_REG (code, ARMREG_IP, ARMREG_PC);
1838                 ARM_B (code, 0);
1839                 arm_patch (code - 4, code - COMMON_TRAMP_SIZE - 8 * (i + 1));
1840                 g_assert (code - buf == 8);
1841                 emit_bytes (acfg, buf, code - buf);
1842         }
1843
1844         /*
1845          * gsharedvt arg trampolines: see arch_emit_gsharedvt_arg_trampoline ()
1846          */
1847         sprintf (symbol, "%sgsharedvt_arg_trampolines_page", acfg->user_symbol_prefix);
1848         emit_global (acfg, symbol, TRUE);
1849         emit_label (acfg, symbol);
1850         code = buf;
1851         ARM_PUSH (code, (1 << ARMREG_R0) | (1 << ARMREG_R1) | (1 << ARMREG_R2) | (1 << ARMREG_R3));
1852         imm8 = mono_arm_is_rotated_imm8 (pagesize, &rot_amount);
1853         ARM_SUB_REG_IMM (code, ARMREG_IP, ARMREG_IP, imm8, rot_amount);
1854         ARM_LDR_IMM (code, ARMREG_R0, ARMREG_IP, -8);
1855         ARM_LDR_IMM (code, ARMREG_PC, ARMREG_IP, -4);
1856         g_assert (code - buf == COMMON_TRAMP_SIZE);
1857         /* Emit it */
1858         emit_bytes (acfg, buf, code - buf);
1859
1860         for (i = 0; i < count; ++i) {
1861                 code = buf;
1862                 ARM_MOV_REG_REG (code, ARMREG_IP, ARMREG_PC);
1863                 ARM_B (code, 0);
1864                 arm_patch (code - 4, code - COMMON_TRAMP_SIZE - 8 * (i + 1));
1865                 g_assert (code - buf == 8);
1866                 emit_bytes (acfg, buf, code - buf);
1867         }
1868
1869         /* now the imt trampolines: each specific trampolines puts in the ip register
1870          * the instruction pointer address, so the generic trampoline at the start of the page
1871          * subtracts 4096 to get to the data page and loads the values
1872          */
1873 #define IMT_TRAMP_SIZE 72
1874         sprintf (symbol, "%simt_trampolines_page", acfg->user_symbol_prefix);
1875         emit_global (acfg, symbol, TRUE);
1876         emit_label (acfg, symbol);
1877         code = buf;
1878         /* Need at least two free registers, plus a slot for storing the pc */
1879         ARM_PUSH (code, (1 << ARMREG_R0)|(1 << ARMREG_R1)|(1 << ARMREG_R2));
1880
1881         imm8 = mono_arm_is_rotated_imm8 (pagesize, &rot_amount);
1882         ARM_SUB_REG_IMM (code, ARMREG_IP, ARMREG_IP, imm8, rot_amount);
1883         ARM_LDR_IMM (code, ARMREG_R0, ARMREG_IP, -8);
1884
1885         /* The IMT method is in v5, r0 has the imt array address */
1886
1887         loop_start = code;
1888         ARM_LDR_IMM (code, ARMREG_R1, ARMREG_R0, 0);
1889         ARM_CMP_REG_REG (code, ARMREG_R1, ARMREG_V5);
1890         imt_found_check = code;
1891         ARM_B_COND (code, ARMCOND_EQ, 0);
1892
1893         /* End-of-loop check */
1894         ARM_CMP_REG_IMM (code, ARMREG_R1, 0, 0);
1895         loop_end_check = code;
1896         ARM_B_COND (code, ARMCOND_EQ, 0);
1897
1898         /* Loop footer */
1899         ARM_ADD_REG_IMM8 (code, ARMREG_R0, ARMREG_R0, sizeof (gpointer) * 2);
1900         loop_branch_back = code;
1901         ARM_B (code, 0);
1902         arm_patch (loop_branch_back, loop_start);
1903
1904         /* Match */
1905         arm_patch (imt_found_check, code);
1906         ARM_LDR_IMM (code, ARMREG_R0, ARMREG_R0, 4);
1907         ARM_LDR_IMM (code, ARMREG_R0, ARMREG_R0, 0);
1908         /* Save it to the third stack slot */
1909         ARM_STR_IMM (code, ARMREG_R0, ARMREG_SP, 8);
1910         /* Restore the registers and branch */
1911         ARM_POP (code, (1 << ARMREG_R0)|(1 << ARMREG_R1)|(1 << ARMREG_PC));
1912
1913         /* No match */
1914         arm_patch (loop_end_check, code);
1915         ARM_LDR_IMM (code, ARMREG_R0, ARMREG_R0, 4);
1916         ARM_STR_IMM (code, ARMREG_R0, ARMREG_SP, 8);
1917         ARM_POP (code, (1 << ARMREG_R0)|(1 << ARMREG_R1)|(1 << ARMREG_PC));
1918         ARM_NOP (code);
1919
1920         /* Emit it */
1921         g_assert (code - buf == IMT_TRAMP_SIZE);
1922         emit_bytes (acfg, buf, code - buf);
1923
1924         for (i = 0; i < count; ++i) {
1925                 code = buf;
1926                 ARM_MOV_REG_REG (code, ARMREG_IP, ARMREG_PC);
1927                 ARM_B (code, 0);
1928                 arm_patch (code - 4, code - IMT_TRAMP_SIZE - 8 * (i + 1));
1929                 g_assert (code - buf == 8);
1930                 emit_bytes (acfg, buf, code - buf);
1931         }
1932
1933         acfg->tramp_page_code_offsets [MONO_AOT_TRAMP_SPECIFIC] = 16;
1934         acfg->tramp_page_code_offsets [MONO_AOT_TRAMP_STATIC_RGCTX] = 16;
1935         acfg->tramp_page_code_offsets [MONO_AOT_TRAMP_IMT] = 72;
1936         acfg->tramp_page_code_offsets [MONO_AOT_TRAMP_GSHAREDVT_ARG] = 16;
1937
1938         /* Unwind info for specifc trampolines */
1939         sprintf (symbol, "%sspecific_trampolines_page_gen_p", acfg->user_symbol_prefix);
1940         /* We unwind to the original caller, from the stack, since lr is clobbered */
1941         mono_add_unwind_op_def_cfa (unwind_ops, 0, 0, ARMREG_SP, 14 * sizeof (mgreg_t));
1942         mono_add_unwind_op_offset (unwind_ops, 0, 0, ARMREG_LR, -4);
1943         save_unwind_info (acfg, symbol, unwind_ops);
1944         mono_free_unwind_info (unwind_ops);
1945
1946         sprintf (symbol, "%sspecific_trampolines_page_sp_p", acfg->user_symbol_prefix);
1947         mono_add_unwind_op_def_cfa (unwind_ops, 0, 0, ARMREG_SP, 0);
1948         mono_add_unwind_op_def_cfa_offset (unwind_ops, 4, 0, 14 * sizeof (mgreg_t));
1949         save_unwind_info (acfg, symbol, unwind_ops);
1950         mono_free_unwind_info (unwind_ops);
1951
1952         /* Unwind info for rgctx trampolines */
1953         sprintf (symbol, "%srgctx_trampolines_page_gen_p", acfg->user_symbol_prefix);
1954         mono_add_unwind_op_def_cfa (unwind_ops, 0, 0, ARMREG_SP, 0);
1955         save_unwind_info (acfg, symbol, unwind_ops);
1956
1957         sprintf (symbol, "%srgctx_trampolines_page_sp_p", acfg->user_symbol_prefix);
1958         save_unwind_info (acfg, symbol, unwind_ops);
1959         mono_free_unwind_info (unwind_ops);
1960
1961         /* Unwind info for gsharedvt trampolines */
1962         sprintf (symbol, "%sgsharedvt_trampolines_page_gen_p", acfg->user_symbol_prefix);
1963         mono_add_unwind_op_def_cfa (unwind_ops, 0, 0, ARMREG_SP, 0);
1964         mono_add_unwind_op_def_cfa_offset (unwind_ops, 4, 0, 4 * sizeof (mgreg_t));
1965         save_unwind_info (acfg, symbol, unwind_ops);
1966         mono_free_unwind_info (unwind_ops);
1967
1968         sprintf (symbol, "%sgsharedvt_trampolines_page_sp_p", acfg->user_symbol_prefix);
1969         mono_add_unwind_op_def_cfa (unwind_ops, 0, 0, ARMREG_SP, 0);
1970         save_unwind_info (acfg, symbol, unwind_ops);
1971         mono_free_unwind_info (unwind_ops);
1972
1973         /* Unwind info for imt trampolines */
1974         sprintf (symbol, "%simt_trampolines_page_gen_p", acfg->user_symbol_prefix);
1975         mono_add_unwind_op_def_cfa (unwind_ops, 0, 0, ARMREG_SP, 0);
1976         mono_add_unwind_op_def_cfa_offset (unwind_ops, 4, 0, 3 * sizeof (mgreg_t));
1977         save_unwind_info (acfg, symbol, unwind_ops);
1978         mono_free_unwind_info (unwind_ops);
1979
1980         sprintf (symbol, "%simt_trampolines_page_sp_p", acfg->user_symbol_prefix);
1981         mono_add_unwind_op_def_cfa (unwind_ops, 0, 0, ARMREG_SP, 0);
1982         save_unwind_info (acfg, symbol, unwind_ops);
1983         mono_free_unwind_info (unwind_ops);
1984 #elif defined(TARGET_ARM64)
1985         arm64_emit_specific_trampoline_pages (acfg);
1986 #endif
1987 }
1988
1989 /*
1990  * arch_emit_specific_trampoline:
1991  *
1992  *   Emit code for a specific trampoline. OFFSET is the offset of the first of
1993  * two GOT slots which contain the generic trampoline address and the trampoline
1994  * argument. TRAMP_SIZE is set to the size of the emitted trampoline.
1995  */
1996 static void
1997 arch_emit_specific_trampoline (MonoAotCompile *acfg, int offset, int *tramp_size)
1998 {
1999         /*
2000          * The trampolines created here are variations of the specific
2001          * trampolines created in mono_arch_create_specific_trampoline (). The
2002          * differences are:
2003          * - the generic trampoline address is taken from a got slot.
2004          * - the offset of the got slot where the trampoline argument is stored
2005          *   is embedded in the instruction stream, and the generic trampoline
2006          *   can load the argument by loading the offset, adding it to the
2007          *   address of the trampoline to get the address of the got slot, and
2008          *   loading the argument from there.
2009          * - all the trampolines should be of the same length.
2010          */
2011 #if defined(TARGET_AMD64)
2012         /* This should be exactly 8 bytes long */
2013         *tramp_size = 8;
2014         /* call *<offset>(%rip) */
2015         if (acfg->llvm) {
2016                 emit_unset_mode (acfg);
2017                 fprintf (acfg->fp, "call *%s+%d(%%rip)\n", acfg->got_symbol, (int)(offset * sizeof (gpointer)));
2018                 emit_zero_bytes (acfg, 2);
2019         } else {
2020                 emit_byte (acfg, '\x41');
2021                 emit_byte (acfg, '\xff');
2022                 emit_byte (acfg, '\x15');
2023                 emit_symbol_diff (acfg, acfg->got_symbol, ".", (offset * sizeof (gpointer)) - 4);
2024                 emit_zero_bytes (acfg, 1);
2025         }
2026 #elif defined(TARGET_ARM)
2027         guint8 buf [128];
2028         guint8 *code;
2029
2030         /* This should be exactly 20 bytes long */
2031         *tramp_size = 20;
2032         code = buf;
2033         ARM_PUSH (code, 0x5fff);
2034         ARM_LDR_IMM (code, ARMREG_R1, ARMREG_PC, 4);
2035         /* Load the value from the GOT */
2036         ARM_LDR_REG_REG (code, ARMREG_R1, ARMREG_PC, ARMREG_R1);
2037         /* Branch to it */
2038         ARM_BLX_REG (code, ARMREG_R1);
2039
2040         g_assert (code - buf == 16);
2041
2042         /* Emit it */
2043         emit_bytes (acfg, buf, code - buf);
2044         /*
2045          * Only one offset is needed, since the second one would be equal to the
2046          * first one.
2047          */
2048         emit_symbol_diff (acfg, acfg->got_symbol, ".", (offset * sizeof (gpointer)) - 4 + 4);
2049         //emit_symbol_diff (acfg, acfg->got_symbol, ".", ((offset + 1) * sizeof (gpointer)) - 4 + 8);
2050 #elif defined(TARGET_ARM64)
2051         arm64_emit_specific_trampoline (acfg, offset, tramp_size);
2052 #elif defined(TARGET_POWERPC)
2053         guint8 buf [128];
2054         guint8 *code;
2055
2056         *tramp_size = 4;
2057         code = buf;
2058
2059         /*
2060          * PPC has no ip relative addressing, so we need to compute the address
2061          * of the mscorlib got. That is slow and complex, so instead, we store it
2062          * in the second got slot of every aot image. The caller already computed
2063          * the address of its got and placed it into r30.
2064          */
2065         emit_unset_mode (acfg);
2066         /* Load mscorlib got address */
2067         fprintf (acfg->fp, "%s 0, %d(30)\n", PPC_LD_OP, (int)sizeof (gpointer));
2068         /* Load generic trampoline address */
2069         fprintf (acfg->fp, "lis 11, %d@h\n", (int)(offset * sizeof (gpointer)));
2070         fprintf (acfg->fp, "ori 11, 11, %d@l\n", (int)(offset * sizeof (gpointer)));
2071         fprintf (acfg->fp, "%s 11, 11, 0\n", PPC_LDX_OP);
2072 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
2073         fprintf (acfg->fp, "%s 11, 0(11)\n", PPC_LD_OP);
2074 #endif
2075         fprintf (acfg->fp, "mtctr 11\n");
2076         /* Load trampoline argument */
2077         /* On ppc, we pass it normally to the generic trampoline */
2078         fprintf (acfg->fp, "lis 11, %d@h\n", (int)((offset + 1) * sizeof (gpointer)));
2079         fprintf (acfg->fp, "ori 11, 11, %d@l\n", (int)((offset + 1) * sizeof (gpointer)));
2080         fprintf (acfg->fp, "%s 0, 11, 0\n", PPC_LDX_OP);
2081         /* Branch to generic trampoline */
2082         fprintf (acfg->fp, "bctr\n");
2083
2084 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
2085         *tramp_size = 10 * 4;
2086 #else
2087         *tramp_size = 9 * 4;
2088 #endif
2089 #elif defined(TARGET_X86)
2090         guint8 buf [128];
2091         guint8 *code;
2092
2093         /* Similar to the PPC code above */
2094
2095         /* FIXME: Could this clobber the register needed by get_vcall_slot () ? */
2096
2097         code = buf;
2098         /* Load mscorlib got address */
2099         x86_mov_reg_membase (code, X86_ECX, MONO_ARCH_GOT_REG, sizeof (gpointer), 4);
2100         /* Push trampoline argument */
2101         x86_push_membase (code, X86_ECX, (offset + 1) * sizeof (gpointer));
2102         /* Load generic trampoline address */
2103         x86_mov_reg_membase (code, X86_ECX, X86_ECX, offset * sizeof (gpointer), 4);
2104         /* Branch to generic trampoline */
2105         x86_jump_reg (code, X86_ECX);
2106
2107         emit_bytes (acfg, buf, code - buf);
2108
2109         *tramp_size = 17;
2110         g_assert (code - buf == *tramp_size);
2111 #else
2112         g_assert_not_reached ();
2113 #endif
2114 }
2115
2116 /*
2117  * arch_emit_unbox_trampoline:
2118  *
2119  *   Emit code for the unbox trampoline for METHOD used in the full-aot case.
2120  * CALL_TARGET is the symbol pointing to the native code of METHOD.
2121  */
2122 static void
2123 arch_emit_unbox_trampoline (MonoAotCompile *acfg, MonoCompile *cfg, MonoMethod *method, const char *call_target)
2124 {
2125 #if defined(TARGET_AMD64)
2126         guint8 buf [32];
2127         guint8 *code;
2128         int this_reg;
2129
2130         this_reg = mono_arch_get_this_arg_reg (NULL);
2131         code = buf;
2132         amd64_alu_reg_imm (code, X86_ADD, this_reg, sizeof (MonoObject));
2133
2134         emit_bytes (acfg, buf, code - buf);
2135         /* jump <method> */
2136         if (acfg->llvm) {
2137                 emit_unset_mode (acfg);
2138                 fprintf (acfg->fp, "jmp %s\n", call_target);
2139         } else {
2140                 emit_byte (acfg, '\xe9');
2141                 emit_symbol_diff (acfg, call_target, ".", -4);
2142         }
2143 #elif defined(TARGET_X86)
2144         guint8 buf [32];
2145         guint8 *code;
2146         int this_pos = 4;
2147
2148         code = buf;
2149
2150         x86_alu_membase_imm (code, X86_ADD, X86_ESP, this_pos, sizeof (MonoObject));
2151
2152         emit_bytes (acfg, buf, code - buf);
2153
2154         /* jump <method> */
2155         emit_byte (acfg, '\xe9');
2156         emit_symbol_diff (acfg, call_target, ".", -4);
2157 #elif defined(TARGET_ARM)
2158         guint8 buf [128];
2159         guint8 *code;
2160
2161         if (acfg->thumb_mixed && cfg->compile_llvm) {
2162                 fprintf (acfg->fp, "add r0, r0, #%d\n", (int)sizeof (MonoObject));
2163                 fprintf (acfg->fp, "b %s\n", call_target);
2164                 fprintf (acfg->fp, ".arm\n");
2165                 fprintf (acfg->fp, ".align 2\n");
2166                 return;
2167         }
2168
2169         code = buf;
2170
2171         ARM_ADD_REG_IMM8 (code, ARMREG_R0, ARMREG_R0, sizeof (MonoObject));
2172
2173         emit_bytes (acfg, buf, code - buf);
2174         /* jump to method */
2175         if (acfg->thumb_mixed && cfg->compile_llvm)
2176                 fprintf (acfg->fp, "\n\tbx %s\n", call_target);
2177         else
2178                 fprintf (acfg->fp, "\n\tb %s\n", call_target);
2179 #elif defined(TARGET_ARM64)
2180         arm64_emit_unbox_trampoline (acfg, cfg, method, call_target);
2181 #elif defined(TARGET_POWERPC)
2182         int this_pos = 3;
2183
2184         fprintf (acfg->fp, "\n\taddi %d, %d, %d\n", this_pos, this_pos, (int)sizeof (MonoObject));
2185         fprintf (acfg->fp, "\n\tb %s\n", call_target);
2186 #else
2187         g_assert_not_reached ();
2188 #endif
2189 }
2190
2191 /*
2192  * arch_emit_static_rgctx_trampoline:
2193  *
2194  *   Emit code for a static rgctx trampoline. OFFSET is the offset of the first of
2195  * two GOT slots which contain the rgctx argument, and the method to jump to.
2196  * TRAMP_SIZE is set to the size of the emitted trampoline.
2197  * These kinds of trampolines cannot be enumerated statically, since there could
2198  * be one trampoline per method instantiation, so we emit the same code for all
2199  * trampolines, and parameterize them using two GOT slots.
2200  */
2201 static void
2202 arch_emit_static_rgctx_trampoline (MonoAotCompile *acfg, int offset, int *tramp_size)
2203 {
2204 #if defined(TARGET_AMD64)
2205         /* This should be exactly 13 bytes long */
2206         *tramp_size = 13;
2207
2208         if (acfg->llvm) {
2209                 emit_unset_mode (acfg);
2210                 fprintf (acfg->fp, "mov %s+%d(%%rip), %%r10\n", acfg->got_symbol, (int)(offset * sizeof (gpointer)));
2211                 fprintf (acfg->fp, "jmp *%s+%d(%%rip)\n", acfg->got_symbol, (int)((offset + 1) * sizeof (gpointer)));
2212         } else {
2213                 /* mov <OFFSET>(%rip), %r10 */
2214                 emit_byte (acfg, '\x4d');
2215                 emit_byte (acfg, '\x8b');
2216                 emit_byte (acfg, '\x15');
2217                 emit_symbol_diff (acfg, acfg->got_symbol, ".", (offset * sizeof (gpointer)) - 4);
2218
2219                 /* jmp *<offset>(%rip) */
2220                 emit_byte (acfg, '\xff');
2221                 emit_byte (acfg, '\x25');
2222                 emit_symbol_diff (acfg, acfg->got_symbol, ".", ((offset + 1) * sizeof (gpointer)) - 4);
2223         }
2224 #elif defined(TARGET_ARM)
2225         guint8 buf [128];
2226         guint8 *code;
2227
2228         /* This should be exactly 24 bytes long */
2229         *tramp_size = 24;
2230         code = buf;
2231         /* Load rgctx value */
2232         ARM_LDR_IMM (code, ARMREG_IP, ARMREG_PC, 8);
2233         ARM_LDR_REG_REG (code, MONO_ARCH_RGCTX_REG, ARMREG_PC, ARMREG_IP);
2234         /* Load branch addr + branch */
2235         ARM_LDR_IMM (code, ARMREG_IP, ARMREG_PC, 4);
2236         ARM_LDR_REG_REG (code, ARMREG_PC, ARMREG_PC, ARMREG_IP);
2237
2238         g_assert (code - buf == 16);
2239
2240         /* Emit it */
2241         emit_bytes (acfg, buf, code - buf);
2242         emit_symbol_diff (acfg, acfg->got_symbol, ".", (offset * sizeof (gpointer)) - 4 + 8);
2243         emit_symbol_diff (acfg, acfg->got_symbol, ".", ((offset + 1) * sizeof (gpointer)) - 4 + 4);
2244 #elif defined(TARGET_ARM64)
2245         arm64_emit_static_rgctx_trampoline (acfg, offset, tramp_size);
2246 #elif defined(TARGET_POWERPC)
2247         guint8 buf [128];
2248         guint8 *code;
2249
2250         *tramp_size = 4;
2251         code = buf;
2252
2253         /*
2254          * PPC has no ip relative addressing, so we need to compute the address
2255          * of the mscorlib got. That is slow and complex, so instead, we store it
2256          * in the second got slot of every aot image. The caller already computed
2257          * the address of its got and placed it into r30.
2258          */
2259         emit_unset_mode (acfg);
2260         /* Load mscorlib got address */
2261         fprintf (acfg->fp, "%s 0, %d(30)\n", PPC_LD_OP, (int)sizeof (gpointer));
2262         /* Load rgctx */
2263         fprintf (acfg->fp, "lis 11, %d@h\n", (int)(offset * sizeof (gpointer)));
2264         fprintf (acfg->fp, "ori 11, 11, %d@l\n", (int)(offset * sizeof (gpointer)));
2265         fprintf (acfg->fp, "%s %d, 11, 0\n", PPC_LDX_OP, MONO_ARCH_RGCTX_REG);
2266         /* Load target address */
2267         fprintf (acfg->fp, "lis 11, %d@h\n", (int)((offset + 1) * sizeof (gpointer)));
2268         fprintf (acfg->fp, "ori 11, 11, %d@l\n", (int)((offset + 1) * sizeof (gpointer)));
2269         fprintf (acfg->fp, "%s 11, 11, 0\n", PPC_LDX_OP);
2270 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
2271         fprintf (acfg->fp, "%s 2, %d(11)\n", PPC_LD_OP, (int)sizeof (gpointer));
2272         fprintf (acfg->fp, "%s 11, 0(11)\n", PPC_LD_OP);
2273 #endif
2274         fprintf (acfg->fp, "mtctr 11\n");
2275         /* Branch to the target address */
2276         fprintf (acfg->fp, "bctr\n");
2277
2278 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
2279         *tramp_size = 11 * 4;
2280 #else
2281         *tramp_size = 9 * 4;
2282 #endif
2283
2284 #elif defined(TARGET_X86)
2285         guint8 buf [128];
2286         guint8 *code;
2287
2288         /* Similar to the PPC code above */
2289
2290         g_assert (MONO_ARCH_RGCTX_REG != X86_ECX);
2291
2292         code = buf;
2293         /* Load mscorlib got address */
2294         x86_mov_reg_membase (code, X86_ECX, MONO_ARCH_GOT_REG, sizeof (gpointer), 4);
2295         /* Load arg */
2296         x86_mov_reg_membase (code, MONO_ARCH_RGCTX_REG, X86_ECX, offset * sizeof (gpointer), 4);
2297         /* Branch to the target address */
2298         x86_jump_membase (code, X86_ECX, (offset + 1) * sizeof (gpointer));
2299
2300         emit_bytes (acfg, buf, code - buf);
2301
2302         *tramp_size = 15;
2303         g_assert (code - buf == *tramp_size);
2304 #else
2305         g_assert_not_reached ();
2306 #endif
2307 }
2308
2309 /*
2310  * arch_emit_imt_trampoline:
2311  *
2312  *   Emit an IMT trampoline usable in full-aot mode. The trampoline uses 1 got slot which
2313  * points to an array of pointer pairs. The pairs of the form [key, ptr], where
2314  * key is the IMT key, and ptr holds the address of a memory location holding
2315  * the address to branch to if the IMT arg matches the key. The array is
2316  * terminated by a pair whose key is NULL, and whose ptr is the address of the
2317  * fail_tramp.
2318  * TRAMP_SIZE is set to the size of the emitted trampoline.
2319  */
2320 static void
2321 arch_emit_imt_trampoline (MonoAotCompile *acfg, int offset, int *tramp_size)
2322 {
2323 #if defined(TARGET_AMD64)
2324         guint8 *buf, *code;
2325         guint8 *labels [16];
2326         guint8 mov_buf[3];
2327         guint8 *mov_buf_ptr = mov_buf;
2328
2329         const int kSizeOfMove = 7;
2330
2331         code = buf = (guint8 *)g_malloc (256);
2332
2333         /* FIXME: Optimize this, i.e. use binary search etc. */
2334         /* Maybe move the body into a separate function (slower, but much smaller) */
2335
2336         /* MONO_ARCH_IMT_SCRATCH_REG is a free register */
2337
2338         if (acfg->llvm) {
2339                 emit_unset_mode (acfg);
2340                 fprintf (acfg->fp, "mov %s+%d(%%rip), %s\n", acfg->got_symbol, (int)(offset * sizeof (gpointer)), mono_arch_regname (MONO_ARCH_IMT_SCRATCH_REG));
2341         }
2342
2343         labels [0] = code;
2344         amd64_alu_membase_imm (code, X86_CMP, MONO_ARCH_IMT_SCRATCH_REG, 0, 0);
2345         labels [1] = code;
2346         amd64_branch8 (code, X86_CC_Z, 0, FALSE);
2347
2348         /* Check key */
2349         amd64_alu_membase_reg_size (code, X86_CMP, MONO_ARCH_IMT_SCRATCH_REG, 0, MONO_ARCH_IMT_REG, sizeof (gpointer));
2350         labels [2] = code;
2351         amd64_branch8 (code, X86_CC_Z, 0, FALSE);
2352
2353         /* Loop footer */
2354         amd64_alu_reg_imm (code, X86_ADD, MONO_ARCH_IMT_SCRATCH_REG, 2 * sizeof (gpointer));
2355         amd64_jump_code (code, labels [0]);
2356
2357         /* Match */
2358         mono_amd64_patch (labels [2], code);
2359         amd64_mov_reg_membase (code, MONO_ARCH_IMT_SCRATCH_REG, MONO_ARCH_IMT_SCRATCH_REG, sizeof (gpointer), sizeof (gpointer));
2360         amd64_jump_membase (code, MONO_ARCH_IMT_SCRATCH_REG, 0);
2361
2362         /* No match */
2363         mono_amd64_patch (labels [1], code);
2364         /* Load fail tramp */
2365         amd64_alu_reg_imm (code, X86_ADD, MONO_ARCH_IMT_SCRATCH_REG, sizeof (gpointer));
2366         /* Check if there is a fail tramp */
2367         amd64_alu_membase_imm (code, X86_CMP, MONO_ARCH_IMT_SCRATCH_REG, 0, 0);
2368         labels [3] = code;
2369         amd64_branch8 (code, X86_CC_Z, 0, FALSE);
2370         /* Jump to fail tramp */
2371         amd64_jump_membase (code, MONO_ARCH_IMT_SCRATCH_REG, 0);
2372
2373         /* Fail */
2374         mono_amd64_patch (labels [3], code);
2375         x86_breakpoint (code);
2376
2377         if (!acfg->llvm) {
2378                 /* mov <OFFSET>(%rip), MONO_ARCH_IMT_SCRATCH_REG */
2379                 amd64_emit_rex (mov_buf_ptr, sizeof(gpointer), MONO_ARCH_IMT_SCRATCH_REG, 0, AMD64_RIP);
2380                 *(mov_buf_ptr)++ = (unsigned char)0x8b; /* mov opcode */
2381                 x86_address_byte (mov_buf_ptr, 0, MONO_ARCH_IMT_SCRATCH_REG & 0x7, 5);
2382                 emit_bytes (acfg, mov_buf, mov_buf_ptr - mov_buf);
2383                 emit_symbol_diff (acfg, acfg->got_symbol, ".", (offset * sizeof (gpointer)) - 4);
2384         }
2385         emit_bytes (acfg, buf, code - buf);
2386
2387         *tramp_size = code - buf + kSizeOfMove;
2388
2389         g_free (buf);
2390
2391 #elif defined(TARGET_X86)
2392         guint8 *buf, *code;
2393         guint8 *labels [16];
2394
2395         code = buf = g_malloc (256);
2396
2397         /* Allocate a temporary stack slot */
2398         x86_push_reg (code, X86_EAX);
2399         /* Save EAX */
2400         x86_push_reg (code, X86_EAX);
2401
2402         /* Load mscorlib got address */
2403         x86_mov_reg_membase (code, X86_EAX, MONO_ARCH_GOT_REG, sizeof (gpointer), 4);
2404         /* Load arg */
2405         x86_mov_reg_membase (code, X86_EAX, X86_EAX, offset * sizeof (gpointer), 4);
2406
2407         labels [0] = code;
2408         x86_alu_membase_imm (code, X86_CMP, X86_EAX, 0, 0);
2409         labels [1] = code;
2410         x86_branch8 (code, X86_CC_Z, FALSE, 0);
2411
2412         /* Check key */
2413         x86_alu_membase_reg (code, X86_CMP, X86_EAX, 0, MONO_ARCH_IMT_REG);
2414         labels [2] = code;
2415         x86_branch8 (code, X86_CC_Z, FALSE, 0);
2416
2417         /* Loop footer */
2418         x86_alu_reg_imm (code, X86_ADD, X86_EAX, 2 * sizeof (gpointer));
2419         x86_jump_code (code, labels [0]);
2420
2421         /* Match */
2422         mono_x86_patch (labels [2], code);
2423         x86_mov_reg_membase (code, X86_EAX, X86_EAX, sizeof (gpointer), 4);
2424         x86_mov_reg_membase (code, X86_EAX, X86_EAX, 0, 4);
2425         /* Save the target address to the temporary stack location */
2426         x86_mov_membase_reg (code, X86_ESP, 4, X86_EAX, 4);
2427         /* Restore EAX */
2428         x86_pop_reg (code, X86_EAX);
2429         /* Jump to the target address */
2430         x86_ret (code);
2431
2432         /* No match */
2433         mono_x86_patch (labels [1], code);
2434         /* Load fail tramp */
2435         x86_mov_reg_membase (code, X86_EAX, X86_EAX, sizeof (gpointer), 4);
2436         x86_alu_membase_imm (code, X86_CMP, X86_EAX, 0, 0);
2437         labels [3] = code;
2438         x86_branch8 (code, X86_CC_Z, FALSE, 0);
2439         /* Jump to fail tramp */
2440         x86_mov_membase_reg (code, X86_ESP, 4, X86_EAX, 4);
2441         x86_pop_reg (code, X86_EAX);
2442         x86_ret (code);
2443
2444         /* Fail */
2445         mono_x86_patch (labels [3], code);
2446         x86_breakpoint (code);
2447
2448         emit_bytes (acfg, buf, code - buf);
2449
2450         *tramp_size = code - buf;
2451
2452         g_free (buf);
2453
2454 #elif defined(TARGET_ARM)
2455         guint8 buf [128];
2456         guint8 *code, *code2, *labels [16];
2457
2458         code = buf;
2459
2460         /* The IMT method is in v5 */
2461
2462         /* Need at least two free registers, plus a slot for storing the pc */
2463         ARM_PUSH (code, (1 << ARMREG_R0)|(1 << ARMREG_R1)|(1 << ARMREG_R2));
2464         labels [0] = code;
2465         /* Load the parameter from the GOT */
2466         ARM_LDR_IMM (code, ARMREG_R0, ARMREG_PC, 0);
2467         ARM_LDR_REG_REG (code, ARMREG_R0, ARMREG_PC, ARMREG_R0);
2468
2469         labels [1] = code;
2470         ARM_LDR_IMM (code, ARMREG_R1, ARMREG_R0, 0);
2471         ARM_CMP_REG_REG (code, ARMREG_R1, ARMREG_V5);
2472         labels [2] = code;
2473         ARM_B_COND (code, ARMCOND_EQ, 0);
2474
2475         /* End-of-loop check */
2476         ARM_CMP_REG_IMM (code, ARMREG_R1, 0, 0);
2477         labels [3] = code;
2478         ARM_B_COND (code, ARMCOND_EQ, 0);
2479
2480         /* Loop footer */
2481         ARM_ADD_REG_IMM8 (code, ARMREG_R0, ARMREG_R0, sizeof (gpointer) * 2);
2482         labels [4] = code;
2483         ARM_B (code, 0);
2484         arm_patch (labels [4], labels [1]);
2485
2486         /* Match */
2487         arm_patch (labels [2], code);
2488         ARM_LDR_IMM (code, ARMREG_R0, ARMREG_R0, 4);
2489         ARM_LDR_IMM (code, ARMREG_R0, ARMREG_R0, 0);
2490         /* Save it to the third stack slot */
2491         ARM_STR_IMM (code, ARMREG_R0, ARMREG_SP, 8);
2492         /* Restore the registers and branch */
2493         ARM_POP (code, (1 << ARMREG_R0)|(1 << ARMREG_R1)|(1 << ARMREG_PC));
2494
2495         /* No match */
2496         arm_patch (labels [3], code);
2497         ARM_LDR_IMM (code, ARMREG_R0, ARMREG_R0, 4);
2498         ARM_STR_IMM (code, ARMREG_R0, ARMREG_SP, 8);
2499         ARM_POP (code, (1 << ARMREG_R0)|(1 << ARMREG_R1)|(1 << ARMREG_PC));
2500
2501         /* Fixup offset */
2502         code2 = labels [0];
2503         ARM_LDR_IMM (code2, ARMREG_R0, ARMREG_PC, (code - (labels [0] + 8)));
2504
2505         emit_bytes (acfg, buf, code - buf);
2506         emit_symbol_diff (acfg, acfg->got_symbol, ".", (offset * sizeof (gpointer)) + (code - (labels [0] + 8)) - 4);
2507
2508         *tramp_size = code - buf + 4;
2509 #elif defined(TARGET_ARM64)
2510         arm64_emit_imt_trampoline (acfg, offset, tramp_size);
2511 #elif defined(TARGET_POWERPC)
2512         guint8 buf [128];
2513         guint8 *code, *labels [16];
2514
2515         code = buf;
2516
2517         /* Load the mscorlib got address */
2518         ppc_ldptr (code, ppc_r12, sizeof (gpointer), ppc_r30);
2519         /* Load the parameter from the GOT */
2520         ppc_load (code, ppc_r0, offset * sizeof (gpointer));
2521         ppc_ldptr_indexed (code, ppc_r12, ppc_r12, ppc_r0);
2522
2523         /* Load and check key */
2524         labels [1] = code;
2525         ppc_ldptr (code, ppc_r0, 0, ppc_r12);
2526         ppc_cmp (code, 0, sizeof (gpointer) == 8 ? 1 : 0, ppc_r0, MONO_ARCH_IMT_REG);
2527         labels [2] = code;
2528         ppc_bc (code, PPC_BR_TRUE, PPC_BR_EQ, 0);
2529
2530         /* End-of-loop check */
2531         ppc_cmpi (code, 0, sizeof (gpointer) == 8 ? 1 : 0, ppc_r0, 0);
2532         labels [3] = code;
2533         ppc_bc (code, PPC_BR_TRUE, PPC_BR_EQ, 0);
2534
2535         /* Loop footer */
2536         ppc_addi (code, ppc_r12, ppc_r12, 2 * sizeof (gpointer));
2537         labels [4] = code;
2538         ppc_b (code, 0);
2539         mono_ppc_patch (labels [4], labels [1]);
2540
2541         /* Match */
2542         mono_ppc_patch (labels [2], code);
2543         ppc_ldptr (code, ppc_r12, sizeof (gpointer), ppc_r12);
2544         /* r12 now contains the value of the vtable slot */
2545         /* this is not a function descriptor on ppc64 */
2546         ppc_ldptr (code, ppc_r12, 0, ppc_r12);
2547         ppc_mtctr (code, ppc_r12);
2548         ppc_bcctr (code, PPC_BR_ALWAYS, 0);
2549
2550         /* Fail */
2551         mono_ppc_patch (labels [3], code);
2552         /* FIXME: */
2553         ppc_break (code);
2554
2555         *tramp_size = code - buf;
2556
2557         emit_bytes (acfg, buf, code - buf);
2558 #else
2559         g_assert_not_reached ();
2560 #endif
2561 }
2562
2563
2564 #if defined (TARGET_AMD64)
2565
2566 static void
2567 amd64_emit_load_got_slot (MonoAotCompile *acfg, int dreg, int got_slot)
2568 {
2569
2570         g_assert (acfg->fp);
2571         emit_unset_mode (acfg);
2572
2573         fprintf (acfg->fp, "mov %s+%d(%%rip), %s\n", acfg->got_symbol, (unsigned int) ((got_slot * sizeof (gpointer))), mono_arch_regname (dreg));
2574 }
2575
2576 #endif
2577
2578
2579 /*
2580  * arch_emit_gsharedvt_arg_trampoline:
2581  *
2582  *   Emit code for a gsharedvt arg trampoline. OFFSET is the offset of the first of
2583  * two GOT slots which contain the argument, and the code to jump to.
2584  * TRAMP_SIZE is set to the size of the emitted trampoline.
2585  * These kinds of trampolines cannot be enumerated statically, since there could
2586  * be one trampoline per method instantiation, so we emit the same code for all
2587  * trampolines, and parameterize them using two GOT slots.
2588  */
2589 static void
2590 arch_emit_gsharedvt_arg_trampoline (MonoAotCompile *acfg, int offset, int *tramp_size)
2591 {
2592 #if defined(TARGET_X86)
2593         guint8 buf [128];
2594         guint8 *code;
2595
2596         /* Similar to the PPC code above */
2597
2598         g_assert (MONO_ARCH_RGCTX_REG != X86_ECX);
2599
2600         code = buf;
2601         /* Load mscorlib got address */
2602         x86_mov_reg_membase (code, X86_ECX, MONO_ARCH_GOT_REG, sizeof (gpointer), 4);
2603         /* Load arg */
2604         x86_mov_reg_membase (code, X86_EAX, X86_ECX, offset * sizeof (gpointer), 4);
2605         /* Branch to the target address */
2606         x86_jump_membase (code, X86_ECX, (offset + 1) * sizeof (gpointer));
2607
2608         emit_bytes (acfg, buf, code - buf);
2609
2610         *tramp_size = 15;
2611         g_assert (code - buf == *tramp_size);
2612 #elif defined(TARGET_ARM)
2613         guint8 buf [128];
2614         guint8 *code;
2615
2616         /* The same as mono_arch_get_gsharedvt_arg_trampoline (), but for AOT */
2617         /* Similar to arch_emit_specific_trampoline () */
2618         *tramp_size = 24;
2619         code = buf;
2620         ARM_PUSH (code, (1 << ARMREG_R0) | (1 << ARMREG_R1) | (1 << ARMREG_R2) | (1 << ARMREG_R3));
2621         ARM_LDR_IMM (code, ARMREG_R1, ARMREG_PC, 8);
2622         /* Load the arg value from the GOT */
2623         ARM_LDR_REG_REG (code, ARMREG_R0, ARMREG_PC, ARMREG_R1);
2624         /* Load the addr from the GOT */
2625         ARM_LDR_REG_REG (code, ARMREG_R1, ARMREG_PC, ARMREG_R1);
2626         /* Branch to it */
2627         ARM_BX (code, ARMREG_R1);
2628
2629         g_assert (code - buf == 20);
2630
2631         /* Emit it */
2632         emit_bytes (acfg, buf, code - buf);
2633         emit_symbol_diff (acfg, acfg->got_symbol, ".", (offset * sizeof (gpointer)) + 4);
2634 #elif defined(TARGET_ARM64)
2635         arm64_emit_gsharedvt_arg_trampoline (acfg, offset, tramp_size);
2636 #elif defined (TARGET_AMD64)
2637
2638         amd64_emit_load_got_slot (acfg, AMD64_RAX, offset);
2639         amd64_emit_load_got_slot (acfg, MONO_ARCH_IMT_SCRATCH_REG, offset + 1);
2640         g_assert (AMD64_R11 == MONO_ARCH_IMT_SCRATCH_REG);
2641         fprintf (acfg->fp, "jmp *%%r11\n");
2642
2643         *tramp_size = 0x11;
2644 #else
2645         g_assert_not_reached ();
2646 #endif
2647 }
2648
2649 /* END OF ARCH SPECIFIC CODE */
2650
2651 static guint32
2652 mono_get_field_token (MonoClassField *field)
2653 {
2654         MonoClass *klass = field->parent;
2655         int i;
2656
2657         int fcount = mono_class_get_field_count (klass);
2658         MonoClassField *klass_fields = m_class_get_fields (klass);
2659         for (i = 0; i < fcount; ++i) {
2660                 if (field == &klass_fields [i])
2661                         return MONO_TOKEN_FIELD_DEF | (mono_class_get_first_field_idx (klass) + 1 + i);
2662         }
2663
2664         g_assert_not_reached ();
2665         return 0;
2666 }
2667
2668 static inline void
2669 encode_value (gint32 value, guint8 *buf, guint8 **endbuf)
2670 {
2671         guint8 *p = buf;
2672
2673         //printf ("ENCODE: %d 0x%x.\n", value, value);
2674
2675         /*
2676          * Same encoding as the one used in the metadata, extended to handle values
2677          * greater than 0x1fffffff.
2678          */
2679         if ((value >= 0) && (value <= 127))
2680                 *p++ = value;
2681         else if ((value >= 0) && (value <= 16383)) {
2682                 p [0] = 0x80 | (value >> 8);
2683                 p [1] = value & 0xff;
2684                 p += 2;
2685         } else if ((value >= 0) && (value <= 0x1fffffff)) {
2686                 p [0] = (value >> 24) | 0xc0;
2687                 p [1] = (value >> 16) & 0xff;
2688                 p [2] = (value >> 8) & 0xff;
2689                 p [3] = value & 0xff;
2690                 p += 4;
2691         }
2692         else {
2693                 p [0] = 0xff;
2694                 p [1] = (value >> 24) & 0xff;
2695                 p [2] = (value >> 16) & 0xff;
2696                 p [3] = (value >> 8) & 0xff;
2697                 p [4] = value & 0xff;
2698                 p += 5;
2699         }
2700         if (endbuf)
2701                 *endbuf = p;
2702 }
2703
2704 static void
2705 stream_init (MonoDynamicStream *sh)
2706 {
2707         sh->index = 0;
2708         sh->alloc_size = 4096;
2709         sh->data = (char *)g_malloc (4096);
2710
2711         /* So offsets are > 0 */
2712         sh->data [0] = 0;
2713         sh->index ++;
2714 }
2715
2716 static void
2717 make_room_in_stream (MonoDynamicStream *stream, int size)
2718 {
2719         if (size <= stream->alloc_size)
2720                 return;
2721
2722         while (stream->alloc_size <= size) {
2723                 if (stream->alloc_size < 4096)
2724                         stream->alloc_size = 4096;
2725                 else
2726                         stream->alloc_size *= 2;
2727         }
2728
2729         stream->data = (char *)g_realloc (stream->data, stream->alloc_size);
2730 }
2731
2732 static guint32
2733 add_stream_data (MonoDynamicStream *stream, const char *data, guint32 len)
2734 {
2735         guint32 idx;
2736
2737         make_room_in_stream (stream, stream->index + len);
2738         memcpy (stream->data + stream->index, data, len);
2739         idx = stream->index;
2740         stream->index += len;
2741         return idx;
2742 }
2743
2744 /*
2745  * add_to_blob:
2746  *
2747  *   Add data to the binary blob inside the aot image. Returns the offset inside the
2748  * blob where the data was stored.
2749  */
2750 static guint32
2751 add_to_blob (MonoAotCompile *acfg, const guint8 *data, guint32 data_len)
2752 {
2753         g_assert (!acfg->blob_closed);
2754
2755         if (acfg->blob.alloc_size == 0)
2756                 stream_init (&acfg->blob);
2757
2758         return add_stream_data (&acfg->blob, (char*)data, data_len);
2759 }
2760
2761 static guint32
2762 add_to_blob_aligned (MonoAotCompile *acfg, const guint8 *data, guint32 data_len, guint32 align)
2763 {
2764         char buf [4] = {0};
2765         guint32 count;
2766
2767         if (acfg->blob.alloc_size == 0)
2768                 stream_init (&acfg->blob);
2769
2770         count = acfg->blob.index % align;
2771
2772         /* we assume the stream data will be aligned */
2773         if (count)
2774                 add_stream_data (&acfg->blob, buf, 4 - count);
2775
2776         return add_stream_data (&acfg->blob, (char*)data, data_len);
2777 }
2778
2779 /* Emit a table of data into the aot image */
2780 static void
2781 emit_aot_data (MonoAotCompile *acfg, MonoAotFileTable table, const char *symbol, guint8 *data, int size)
2782 {
2783         if (acfg->data_outfile) {
2784                 acfg->table_offsets [(int)table] = acfg->datafile_offset;
2785                 fwrite (data,1, size, acfg->data_outfile);
2786                 acfg->datafile_offset += size;
2787                 // align the data to 8 bytes. Put zeros in the file (so that every build results in consistent output).
2788                 int align = 8 - size % 8;
2789                 acfg->datafile_offset += align;
2790                 guint8 align_buf [16];
2791                 memset (&align_buf, 0, sizeof (align_buf));
2792                 fwrite (align_buf, align, 1, acfg->data_outfile);
2793         } else if (acfg->llvm) {
2794                 mono_llvm_emit_aot_data (symbol, data, size);
2795         } else {
2796                 emit_section_change (acfg, RODATA_SECT, 0);
2797                 emit_alignment (acfg, 8);
2798                 emit_label (acfg, symbol);
2799                 emit_bytes (acfg, data, size);
2800         }
2801 }
2802
2803 /*
2804  * emit_offset_table:
2805  *
2806  *   Emit a table of increasing offsets in a compact form using differential encoding.
2807  * There is an index entry for each GROUP_SIZE number of entries. The greater the
2808  * group size, the more compact the table becomes, but the slower it becomes to compute
2809  * a given entry. Returns the size of the table.
2810  */
2811 static guint32
2812 emit_offset_table (MonoAotCompile *acfg, const char *symbol, MonoAotFileTable table, int noffsets, int group_size, gint32 *offsets)
2813 {
2814         gint32 current_offset;
2815         int i, buf_size, ngroups, index_entry_size;
2816         guint8 *p, *buf;
2817         guint8 *data_p, *data_buf;
2818         guint32 *index_offsets;
2819
2820         ngroups = (noffsets + (group_size - 1)) / group_size;
2821
2822         index_offsets = g_new0 (guint32, ngroups);
2823
2824         buf_size = noffsets * 4;
2825         p = buf = (guint8 *)g_malloc0 (buf_size);
2826
2827         current_offset = 0;
2828         for (i = 0; i < noffsets; ++i) {
2829                 //printf ("D: %d -> %d\n", i, offsets [i]);
2830                 if ((i % group_size) == 0) {
2831                         index_offsets [i / group_size] = p - buf;
2832                         /* Emit the full value for these entries */
2833                         encode_value (offsets [i], p, &p);
2834                 } else {
2835                         /* The offsets are allowed to be non-increasing */
2836                         //g_assert (offsets [i] >= current_offset);
2837                         encode_value (offsets [i] - current_offset, p, &p);
2838                 }
2839                 current_offset = offsets [i];
2840         }
2841         data_buf = buf;
2842         data_p = p;
2843
2844         if (ngroups && index_offsets [ngroups - 1] < 65000)
2845                 index_entry_size = 2;
2846         else
2847                 index_entry_size = 4;
2848
2849         buf_size = (data_p - data_buf) + (ngroups * 4) + 16;
2850         p = buf = (guint8 *)g_malloc0 (buf_size);
2851
2852         /* Emit the header */
2853         encode_int (noffsets, p, &p);
2854         encode_int (group_size, p, &p);
2855         encode_int (ngroups, p, &p);
2856         encode_int (index_entry_size, p, &p);
2857
2858         /* Emit the index */
2859         for (i = 0; i < ngroups; ++i) {
2860                 if (index_entry_size == 2)
2861                         encode_int16 (index_offsets [i], p, &p);
2862                 else
2863                         encode_int (index_offsets [i], p, &p);
2864         }
2865         /* Emit the data */
2866         memcpy (p, data_buf, data_p - data_buf);
2867         p += data_p - data_buf;
2868
2869         g_assert (p - buf <= buf_size);
2870
2871         emit_aot_data (acfg, table, symbol, buf, p - buf);
2872
2873         g_free (buf);
2874         g_free (data_buf);
2875
2876     return (int)(p - buf);
2877 }
2878
2879 static guint32
2880 get_image_index (MonoAotCompile *cfg, MonoImage *image)
2881 {
2882         guint32 index;
2883
2884         index = GPOINTER_TO_UINT (g_hash_table_lookup (cfg->image_hash, image));
2885         if (index)
2886                 return index - 1;
2887         else {
2888                 index = g_hash_table_size (cfg->image_hash);
2889                 g_hash_table_insert (cfg->image_hash, image, GUINT_TO_POINTER (index + 1));
2890                 g_ptr_array_add (cfg->image_table, image);
2891                 return index;
2892         }
2893 }
2894
2895 static guint32
2896 find_typespec_for_class (MonoAotCompile *acfg, MonoClass *klass)
2897 {
2898         int i;
2899         int len = acfg->image->tables [MONO_TABLE_TYPESPEC].rows;
2900
2901         /* FIXME: Search referenced images as well */
2902         if (!acfg->typespec_classes) {
2903                 acfg->typespec_classes = g_hash_table_new (NULL, NULL);
2904                 for (i = 0; i < len; i++) {
2905                         ERROR_DECL (error);
2906                         int typespec = MONO_TOKEN_TYPE_SPEC | (i + 1);
2907                         MonoClass *klass_key = mono_class_get_and_inflate_typespec_checked (acfg->image, typespec, NULL, error);
2908                         if (!is_ok (error)) {
2909                                 mono_error_cleanup (error);
2910                                 continue;
2911                         }
2912                         g_hash_table_insert (acfg->typespec_classes, klass_key, GINT_TO_POINTER (typespec));
2913                 }
2914         }
2915         return GPOINTER_TO_INT (g_hash_table_lookup (acfg->typespec_classes, klass));
2916 }
2917
2918 static void
2919 encode_method_ref (MonoAotCompile *acfg, MonoMethod *method, guint8 *buf, guint8 **endbuf);
2920
2921 static void
2922 encode_klass_ref (MonoAotCompile *acfg, MonoClass *klass, guint8 *buf, guint8 **endbuf);
2923
2924 static void
2925 encode_ginst (MonoAotCompile *acfg, MonoGenericInst *inst, guint8 *buf, guint8 **endbuf);
2926
2927 static void
2928 encode_type (MonoAotCompile *acfg, MonoType *t, guint8 *buf, guint8 **endbuf);
2929
2930 static void
2931 encode_klass_ref_inner (MonoAotCompile *acfg, MonoClass *klass, guint8 *buf, guint8 **endbuf)
2932 {
2933         guint8 *p = buf;
2934
2935         /*
2936          * The encoding begins with one of the MONO_AOT_TYPEREF values, followed by additional
2937          * information.
2938          */
2939
2940         if (mono_class_is_ginst (klass)) {
2941                 guint32 token;
2942                 g_assert (m_class_get_type_token (klass));
2943
2944                 /* Find a typespec for a class if possible */
2945                 token = find_typespec_for_class (acfg, klass);
2946                 if (token) {
2947                         encode_value (MONO_AOT_TYPEREF_TYPESPEC_TOKEN, p, &p);
2948                         encode_value (token, p, &p);
2949                 } else {
2950                         MonoClass *gclass = mono_class_get_generic_class (klass)->container_class;
2951                         MonoGenericInst *inst = mono_class_get_generic_class (klass)->context.class_inst;
2952                         static int count = 0;
2953                         guint8 *p1 = p;
2954
2955                         encode_value (MONO_AOT_TYPEREF_GINST, p, &p);
2956                         encode_klass_ref (acfg, gclass, p, &p);
2957                         encode_ginst (acfg, inst, p, &p);
2958
2959                         count += p - p1;
2960                 }
2961         } else if (m_class_get_type_token (klass)) {
2962                 int iindex = get_image_index (acfg, m_class_get_image (klass));
2963
2964                 g_assert (mono_metadata_token_code (m_class_get_type_token (klass)) == MONO_TOKEN_TYPE_DEF);
2965                 if (iindex == 0) {
2966                         encode_value (MONO_AOT_TYPEREF_TYPEDEF_INDEX, p, &p);
2967                         encode_value (m_class_get_type_token (klass) - MONO_TOKEN_TYPE_DEF, p, &p);
2968                 } else {
2969                         encode_value (MONO_AOT_TYPEREF_TYPEDEF_INDEX_IMAGE, p, &p);
2970                         encode_value (m_class_get_type_token (klass) - MONO_TOKEN_TYPE_DEF, p, &p);
2971                         encode_value (get_image_index (acfg, m_class_get_image (klass)), p, &p);
2972                 }
2973         } else if ((m_class_get_byval_arg (klass)->type == MONO_TYPE_VAR) || (m_class_get_byval_arg (klass)->type == MONO_TYPE_MVAR)) {
2974                 MonoGenericContainer *container = mono_type_get_generic_param_owner (m_class_get_byval_arg (klass));
2975                 MonoGenericParam *par = m_class_get_byval_arg (klass)->data.generic_param;
2976
2977                 encode_value (MONO_AOT_TYPEREF_VAR, p, &p);
2978
2979                 encode_value (par->gshared_constraint ? 1 : 0, p, &p);
2980                 if (par->gshared_constraint) {
2981                         MonoGSharedGenericParam *gpar = (MonoGSharedGenericParam*)par;
2982                         encode_type (acfg, par->gshared_constraint, p, &p);
2983                         encode_klass_ref (acfg, mono_class_create_generic_parameter (gpar->parent), p, &p);
2984                 } else {
2985                         encode_value (m_class_get_byval_arg (klass)->type, p, &p);
2986                         encode_value (mono_type_get_generic_param_num (m_class_get_byval_arg (klass)), p, &p);
2987
2988                         encode_value (container->is_anonymous ? 0 : 1, p, &p);
2989
2990                         if (!container->is_anonymous) {
2991                                 encode_value (container->is_method, p, &p);
2992                                 if (container->is_method)
2993                                         encode_method_ref (acfg, container->owner.method, p, &p);
2994                                 else
2995                                         encode_klass_ref (acfg, container->owner.klass, p, &p);
2996                         }
2997                 }
2998         } else if (m_class_get_byval_arg (klass)->type == MONO_TYPE_PTR) {
2999                 encode_value (MONO_AOT_TYPEREF_PTR, p, &p);
3000                 encode_type (acfg, m_class_get_byval_arg (klass), p, &p);
3001         } else {
3002                 /* Array class */
3003                 g_assert (m_class_get_rank (klass) > 0);
3004                 encode_value (MONO_AOT_TYPEREF_ARRAY, p, &p);
3005                 encode_value (m_class_get_rank (klass), p, &p);
3006                 encode_klass_ref (acfg, m_class_get_element_class (klass), p, &p);
3007         }
3008         *endbuf = p;
3009 }
3010
3011 /*
3012  * encode_klass_ref:
3013  *
3014  *   Encode a reference to KLASS. We use our home-grown encoding instead of the
3015  * standard metadata encoding.
3016  */
3017 static void
3018 encode_klass_ref (MonoAotCompile *acfg, MonoClass *klass, guint8 *buf, guint8 **endbuf)
3019 {
3020         gboolean shared = FALSE;
3021
3022         /*
3023          * The encoding of generic instances is large so emit them only once.
3024          */
3025         if (mono_class_is_ginst (klass)) {
3026                 guint32 token;
3027                 g_assert (m_class_get_type_token (klass));
3028
3029                 /* Find a typespec for a class if possible */
3030                 token = find_typespec_for_class (acfg, klass);
3031                 if (!token)
3032                         shared = TRUE;
3033         } else if ((m_class_get_byval_arg (klass)->type == MONO_TYPE_VAR) || (m_class_get_byval_arg (klass)->type == MONO_TYPE_MVAR)) {
3034                 shared = TRUE;
3035         }
3036
3037         if (shared) {
3038                 guint offset = GPOINTER_TO_UINT (g_hash_table_lookup (acfg->klass_blob_hash, klass));
3039                 guint8 *buf2, *p;
3040
3041                 if (!offset) {
3042                         buf2 = (guint8 *)g_malloc (1024);
3043                         p = buf2;
3044
3045                         encode_klass_ref_inner (acfg, klass, p, &p);
3046                         g_assert (p - buf2 < 1024);
3047
3048                         offset = add_to_blob (acfg, buf2, p - buf2);
3049                         g_free (buf2);
3050
3051                         g_hash_table_insert (acfg->klass_blob_hash, klass, GUINT_TO_POINTER (offset + 1));
3052                 } else {
3053                         offset --;
3054                 }
3055
3056                 p = buf;
3057                 encode_value (MONO_AOT_TYPEREF_BLOB_INDEX, p, &p);
3058                 encode_value (offset, p, &p);
3059                 *endbuf = p;
3060                 return;
3061         }
3062
3063         encode_klass_ref_inner (acfg, klass, buf, endbuf);
3064 }
3065
3066 static void
3067 encode_field_info (MonoAotCompile *cfg, MonoClassField *field, guint8 *buf, guint8 **endbuf)
3068 {
3069         guint32 token = mono_get_field_token (field);
3070         guint8 *p = buf;
3071
3072         encode_klass_ref (cfg, field->parent, p, &p);
3073         g_assert (mono_metadata_token_code (token) == MONO_TOKEN_FIELD_DEF);
3074         encode_value (token - MONO_TOKEN_FIELD_DEF, p, &p);
3075         *endbuf = p;
3076 }
3077
3078 static void
3079 encode_ginst (MonoAotCompile *acfg, MonoGenericInst *inst, guint8 *buf, guint8 **endbuf)
3080 {
3081         guint8 *p = buf;
3082         int i;
3083
3084         encode_value (inst->type_argc, p, &p);
3085         for (i = 0; i < inst->type_argc; ++i)
3086                 encode_klass_ref (acfg, mono_class_from_mono_type (inst->type_argv [i]), p, &p);
3087         *endbuf = p;
3088 }
3089
3090 static void
3091 encode_generic_context (MonoAotCompile *acfg, MonoGenericContext *context, guint8 *buf, guint8 **endbuf)
3092 {
3093         guint8 *p = buf;
3094         MonoGenericInst *inst;
3095
3096         inst = context->class_inst;
3097         if (inst) {
3098                 g_assert (inst->type_argc);
3099                 encode_ginst (acfg, inst, p, &p);
3100         } else {
3101                 encode_value (0, p, &p);
3102         }
3103         inst = context->method_inst;
3104         if (inst) {
3105                 g_assert (inst->type_argc);
3106                 encode_ginst (acfg, inst, p, &p);
3107         } else {
3108                 encode_value (0, p, &p);
3109         }
3110         *endbuf = p;
3111 }
3112
3113 static void
3114 encode_type (MonoAotCompile *acfg, MonoType *t, guint8 *buf, guint8 **endbuf)
3115 {
3116         guint8 *p = buf;
3117
3118         // Change memory allocation in decode_type if you change
3119         g_assert (!t->has_cmods);
3120
3121         /* t->attrs can be ignored */
3122         //g_assert (t->attrs == 0);
3123
3124         if (t->pinned) {
3125                 *p = MONO_TYPE_PINNED;
3126                 ++p;
3127         }
3128         if (t->byref) {
3129                 *p = MONO_TYPE_BYREF;
3130                 ++p;
3131         }
3132
3133         *p = t->type;
3134         p ++;
3135
3136         switch (t->type) {
3137         case MONO_TYPE_VOID:
3138         case MONO_TYPE_BOOLEAN:
3139         case MONO_TYPE_CHAR:
3140         case MONO_TYPE_I1:
3141         case MONO_TYPE_U1:
3142         case MONO_TYPE_I2:
3143         case MONO_TYPE_U2:
3144         case MONO_TYPE_I4:
3145         case MONO_TYPE_U4:
3146         case MONO_TYPE_I8:
3147         case MONO_TYPE_U8:
3148         case MONO_TYPE_R4:
3149         case MONO_TYPE_R8:
3150         case MONO_TYPE_I:
3151         case MONO_TYPE_U:
3152         case MONO_TYPE_STRING:
3153         case MONO_TYPE_OBJECT:
3154         case MONO_TYPE_TYPEDBYREF:
3155                 break;
3156         case MONO_TYPE_VALUETYPE:
3157         case MONO_TYPE_CLASS:
3158                 encode_klass_ref (acfg, mono_class_from_mono_type (t), p, &p);
3159                 break;
3160         case MONO_TYPE_SZARRAY:
3161                 encode_klass_ref (acfg, t->data.klass, p, &p);
3162                 break;
3163         case MONO_TYPE_PTR:
3164                 encode_type (acfg, t->data.type, p, &p);
3165                 break;
3166         case MONO_TYPE_GENERICINST: {
3167                 MonoClass *gclass = t->data.generic_class->container_class;
3168                 MonoGenericInst *inst = t->data.generic_class->context.class_inst;
3169
3170                 encode_klass_ref (acfg, gclass, p, &p);
3171                 encode_ginst (acfg, inst, p, &p);
3172                 break;
3173         }
3174         case MONO_TYPE_ARRAY: {
3175                 MonoArrayType *array = t->data.array;
3176                 int i;
3177
3178                 encode_klass_ref (acfg, array->eklass, p, &p);
3179                 encode_value (array->rank, p, &p);
3180                 encode_value (array->numsizes, p, &p);
3181                 for (i = 0; i < array->numsizes; ++i)
3182                         encode_value (array->sizes [i], p, &p);
3183                 encode_value (array->numlobounds, p, &p);
3184                 for (i = 0; i < array->numlobounds; ++i)
3185                         encode_value (array->lobounds [i], p, &p);
3186                 break;
3187         }
3188         case MONO_TYPE_VAR:
3189         case MONO_TYPE_MVAR:
3190                 encode_klass_ref (acfg, mono_class_from_mono_type (t), p, &p);
3191                 break;
3192         default:
3193                 g_assert_not_reached ();
3194         }
3195
3196         *endbuf = p;
3197 }
3198
3199 static void
3200 encode_signature (MonoAotCompile *acfg, MonoMethodSignature *sig, guint8 *buf, guint8 **endbuf)
3201 {
3202         guint8 *p = buf;
3203         guint32 flags = 0;
3204         int i;
3205
3206         /* Similar to the metadata encoding */
3207         if (sig->generic_param_count)
3208                 flags |= 0x10;
3209         if (sig->hasthis)
3210                 flags |= 0x20;
3211         if (sig->explicit_this)
3212                 flags |= 0x40;
3213         flags |= (sig->call_convention & 0x0F);
3214
3215         *p = flags;
3216         ++p;
3217         if (sig->generic_param_count)
3218                 encode_value (sig->generic_param_count, p, &p);
3219         encode_value (sig->param_count, p, &p);
3220
3221         encode_type (acfg, sig->ret, p, &p);
3222         for (i = 0; i < sig->param_count; ++i) {
3223                 if (sig->sentinelpos == i) {
3224                         *p = MONO_TYPE_SENTINEL;
3225                         ++p;
3226                 }
3227                 encode_type (acfg, sig->params [i], p, &p);
3228         }
3229
3230         *endbuf = p;
3231 }
3232
3233 #define MAX_IMAGE_INDEX 250
3234
3235 static void
3236 encode_method_ref (MonoAotCompile *acfg, MonoMethod *method, guint8 *buf, guint8 **endbuf)
3237 {
3238         guint32 image_index = get_image_index (acfg, m_class_get_image (method->klass));
3239         guint32 token = method->token;
3240         MonoJumpInfoToken *ji;
3241         guint8 *p = buf;
3242
3243         /*
3244          * The encoding for most methods is as follows:
3245          * - image index encoded as a leb128
3246          * - token index encoded as a leb128
3247          * Values of image index >= MONO_AOT_METHODREF_MIN are used to mark additional
3248          * types of method encodings.
3249          */
3250
3251         /* Mark methods which can't use aot trampolines because they need the further
3252          * processing in mono_magic_trampoline () which requires a MonoMethod*.
3253          */
3254         if ((method->is_generic && (method->flags & METHOD_ATTRIBUTE_VIRTUAL)) ||
3255                 (method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED))
3256                 encode_value ((MONO_AOT_METHODREF_NO_AOT_TRAMPOLINE << 24), p, &p);
3257
3258         if (method->wrapper_type) {
3259                 WrapperInfo *info = mono_marshal_get_wrapper_info (method);
3260
3261                 encode_value ((MONO_AOT_METHODREF_WRAPPER << 24), p, &p);
3262
3263                 encode_value (method->wrapper_type, p, &p);
3264
3265                 switch (method->wrapper_type) {
3266                 case MONO_WRAPPER_REMOTING_INVOKE:
3267                 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK:
3268                 case MONO_WRAPPER_XDOMAIN_INVOKE: {
3269                         MonoMethod *m;
3270
3271                         m = mono_marshal_method_from_wrapper (method);
3272                         g_assert (m);
3273                         encode_method_ref (acfg, m, p, &p);
3274                         break;
3275                 }
3276                 case MONO_WRAPPER_PROXY_ISINST:
3277                 case MONO_WRAPPER_LDFLD:
3278                 case MONO_WRAPPER_LDFLDA:
3279                 case MONO_WRAPPER_STFLD: {
3280                         g_assert (info);
3281                         encode_klass_ref (acfg, info->d.proxy.klass, p, &p);
3282                         break;
3283                 }
3284                 case MONO_WRAPPER_ALLOC: {
3285                         /* The GC name is saved once in MonoAotFileInfo */
3286                         g_assert (info->d.alloc.alloc_type != -1);
3287                         encode_value (info->d.alloc.alloc_type, p, &p);
3288                         break;
3289                 }
3290                 case MONO_WRAPPER_WRITE_BARRIER: {
3291                         g_assert (info);
3292                         break;
3293                 }
3294                 case MONO_WRAPPER_STELEMREF: {
3295                         g_assert (info);
3296                         encode_value (info->subtype, p, &p);
3297                         if (info->subtype == WRAPPER_SUBTYPE_VIRTUAL_STELEMREF)
3298                                 encode_value (info->d.virtual_stelemref.kind, p, &p);
3299                         break;
3300                 }
3301                 case MONO_WRAPPER_UNKNOWN: {
3302                         g_assert (info);
3303                         encode_value (info->subtype, p, &p);
3304                         if (info->subtype == WRAPPER_SUBTYPE_PTR_TO_STRUCTURE ||
3305                                 info->subtype == WRAPPER_SUBTYPE_STRUCTURE_TO_PTR)
3306                                 encode_klass_ref (acfg, method->klass, p, &p);
3307                         else if (info->subtype == WRAPPER_SUBTYPE_SYNCHRONIZED_INNER)
3308                                 encode_method_ref (acfg, info->d.synchronized_inner.method, p, &p);
3309                         else if (info->subtype == WRAPPER_SUBTYPE_ARRAY_ACCESSOR)
3310                                 encode_method_ref (acfg, info->d.array_accessor.method, p, &p);
3311                         else if (info->subtype == WRAPPER_SUBTYPE_INTERP_IN)
3312                                 encode_signature (acfg, info->d.interp_in.sig, p, &p);
3313                         else if (info->subtype == WRAPPER_SUBTYPE_GSHAREDVT_IN_SIG)
3314                                 encode_signature (acfg, info->d.gsharedvt.sig, p, &p);
3315                         else if (info->subtype == WRAPPER_SUBTYPE_GSHAREDVT_OUT_SIG)
3316                                 encode_signature (acfg, info->d.gsharedvt.sig, p, &p);
3317                         break;
3318                 }
3319                 case MONO_WRAPPER_MANAGED_TO_NATIVE: {
3320                         g_assert (info);
3321                         encode_value (info->subtype, p, &p);
3322                         if (info->subtype == WRAPPER_SUBTYPE_ICALL_WRAPPER) {
3323                                 strcpy ((char*)p, method->name);
3324                                 p += strlen (method->name) + 1;
3325                         } else if (info->subtype == WRAPPER_SUBTYPE_NATIVE_FUNC_AOT) {
3326                                 encode_method_ref (acfg, info->d.managed_to_native.method, p, &p);
3327                         } else {
3328                                 g_assert (info->subtype == WRAPPER_SUBTYPE_NONE || info->subtype == WRAPPER_SUBTYPE_PINVOKE);
3329                                 encode_method_ref (acfg, info->d.managed_to_native.method, p, &p);
3330                         }
3331                         break;
3332                 }
3333                 case MONO_WRAPPER_SYNCHRONIZED: {
3334                         MonoMethod *m;
3335
3336                         m = mono_marshal_method_from_wrapper (method);
3337                         g_assert (m);
3338                         g_assert (m != method);
3339                         encode_method_ref (acfg, m, p, &p);
3340                         break;
3341                 }
3342                 case MONO_WRAPPER_MANAGED_TO_MANAGED: {
3343                         g_assert (info);
3344                         encode_value (info->subtype, p, &p);
3345
3346                         if (info->subtype == WRAPPER_SUBTYPE_ELEMENT_ADDR) {
3347                                 encode_value (info->d.element_addr.rank, p, &p);
3348                                 encode_value (info->d.element_addr.elem_size, p, &p);
3349                         } else if (info->subtype == WRAPPER_SUBTYPE_STRING_CTOR) {
3350                                 encode_method_ref (acfg, info->d.string_ctor.method, p, &p);
3351                         } else {
3352                                 g_assert_not_reached ();
3353                         }
3354                         break;
3355                 }
3356                 case MONO_WRAPPER_CASTCLASS: {
3357                         g_assert (info);
3358                         encode_value (info->subtype, p, &p);
3359                         break;
3360                 }
3361                 case MONO_WRAPPER_RUNTIME_INVOKE: {
3362                         g_assert (info);
3363                         encode_value (info->subtype, p, &p);
3364                         if (info->subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_DIRECT || info->subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_VIRTUAL)
3365                                 encode_method_ref (acfg, info->d.runtime_invoke.method, p, &p);
3366                         else if (info->subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_NORMAL)
3367                                 encode_signature (acfg, info->d.runtime_invoke.sig, p, &p);
3368                         break;
3369                 }
3370                 case MONO_WRAPPER_DELEGATE_INVOKE:
3371                 case MONO_WRAPPER_DELEGATE_BEGIN_INVOKE:
3372                 case MONO_WRAPPER_DELEGATE_END_INVOKE: {
3373                         if (method->is_inflated) {
3374                                 /* These wrappers are identified by their class */
3375                                 encode_value (1, p, &p);
3376                                 encode_klass_ref (acfg, method->klass, p, &p);
3377                         } else {
3378                                 MonoMethodSignature *sig = mono_method_signature (method);
3379                                 WrapperInfo *info = mono_marshal_get_wrapper_info (method);
3380
3381                                 encode_value (0, p, &p);
3382                                 if (method->wrapper_type == MONO_WRAPPER_DELEGATE_INVOKE)
3383                                         encode_value (info ? info->subtype : 0, p, &p);
3384                                 encode_signature (acfg, sig, p, &p);
3385                         }
3386                         break;
3387                 }
3388                 case MONO_WRAPPER_NATIVE_TO_MANAGED: {
3389                         g_assert (info);
3390                         encode_method_ref (acfg, info->d.native_to_managed.method, p, &p);
3391                         encode_klass_ref (acfg, info->d.native_to_managed.klass, p, &p);
3392                         break;
3393                 }
3394                 default:
3395                         g_assert_not_reached ();
3396                 }
3397         } else if (mono_method_signature (method)->is_inflated) {
3398                 /*
3399                  * This is a generic method, find the original token which referenced it and
3400                  * encode that.
3401                  * Obtain the token from information recorded by the JIT.
3402                  */
3403                 ji = (MonoJumpInfoToken *)g_hash_table_lookup (acfg->token_info_hash, method);
3404                 if (ji) {
3405                         image_index = get_image_index (acfg, ji->image);
3406                         g_assert (image_index < MAX_IMAGE_INDEX);
3407                         token = ji->token;
3408
3409                         encode_value ((MONO_AOT_METHODREF_METHODSPEC << 24), p, &p);
3410                         encode_value (image_index, p, &p);
3411                         encode_value (token, p, &p);
3412                 } else {
3413                         MonoMethod *declaring;
3414                         MonoGenericContext *context = mono_method_get_context (method);
3415
3416                         g_assert (method->is_inflated);
3417                         declaring = ((MonoMethodInflated*)method)->declaring;
3418
3419                         /*
3420                          * This might be a non-generic method of a generic instance, which
3421                          * doesn't have a token since the reference is generated by the JIT
3422                          * like Nullable:Box/Unbox, or by generic sharing.
3423                          */
3424                         encode_value ((MONO_AOT_METHODREF_GINST << 24), p, &p);
3425                         /* Encode the klass */
3426                         encode_klass_ref (acfg, method->klass, p, &p);
3427                         /* Encode the method */
3428                         image_index = get_image_index (acfg, m_class_get_image (method->klass));
3429                         g_assert (image_index < MAX_IMAGE_INDEX);
3430                         g_assert (declaring->token);
3431                         token = declaring->token;
3432                         g_assert (mono_metadata_token_table (token) == MONO_TABLE_METHOD);
3433                         encode_value (image_index, p, &p);
3434                         encode_value (token, p, &p);
3435                         encode_generic_context (acfg, context, p, &p);
3436                 }
3437         } else if (token == 0) {
3438                 /* This might be a method of a constructed type like int[,].Set */
3439                 /* Obtain the token from information recorded by the JIT */
3440                 ji = (MonoJumpInfoToken *)g_hash_table_lookup (acfg->token_info_hash, method);
3441                 if (ji) {
3442                         image_index = get_image_index (acfg, ji->image);
3443                         g_assert (image_index < MAX_IMAGE_INDEX);
3444                         token = ji->token;
3445
3446                         encode_value ((MONO_AOT_METHODREF_METHODSPEC << 24), p, &p);
3447                         encode_value (image_index, p, &p);
3448                         encode_value (token, p, &p);
3449                 } else {
3450                         /* Array methods */
3451                         g_assert (m_class_get_rank (method->klass));
3452
3453                         /* Encode directly */
3454                         encode_value ((MONO_AOT_METHODREF_ARRAY << 24), p, &p);
3455                         encode_klass_ref (acfg, method->klass, p, &p);
3456                         if (!strcmp (method->name, ".ctor") && mono_method_signature (method)->param_count == m_class_get_rank (method->klass))
3457                                 encode_value (0, p, &p);
3458                         else if (!strcmp (method->name, ".ctor") && mono_method_signature (method)->param_count == m_class_get_rank (method->klass) * 2)
3459                                 encode_value (1, p, &p);
3460                         else if (!strcmp (method->name, "Get"))
3461                                 encode_value (2, p, &p);
3462                         else if (!strcmp (method->name, "Address"))
3463                                 encode_value (3, p, &p);
3464                         else if (!strcmp (method->name, "Set"))
3465                                 encode_value (4, p, &p);
3466                         else
3467                                 g_assert_not_reached ();
3468                 }
3469         } else {
3470                 g_assert (mono_metadata_token_table (token) == MONO_TABLE_METHOD);
3471
3472                 if (image_index >= MONO_AOT_METHODREF_MIN) {
3473                         encode_value ((MONO_AOT_METHODREF_LARGE_IMAGE_INDEX << 24), p, &p);
3474                         encode_value (image_index, p, &p);
3475                         encode_value (mono_metadata_token_index (token), p, &p);
3476                 } else {
3477                         encode_value ((image_index << 24) | mono_metadata_token_index (token), p, &p);
3478                 }
3479         }
3480         *endbuf = p;
3481 }
3482
3483 static gint
3484 compare_patches (gconstpointer a, gconstpointer b)
3485 {
3486         int i, j;
3487
3488         i = (*(MonoJumpInfo**)a)->ip.i;
3489         j = (*(MonoJumpInfo**)b)->ip.i;
3490
3491         if (i < j)
3492                 return -1;
3493         else
3494                 if (i > j)
3495                         return 1;
3496         else
3497                 return 0;
3498 }
3499
3500 static G_GNUC_UNUSED char*
3501 patch_to_string (MonoJumpInfo *patch_info)
3502 {
3503         GString *str;
3504
3505         str = g_string_new ("");
3506
3507         g_string_append_printf (str, "%s(", get_patch_name (patch_info->type));
3508
3509         switch (patch_info->type) {
3510         case MONO_PATCH_INFO_VTABLE:
3511                 mono_type_get_desc (str, m_class_get_byval_arg (patch_info->data.klass), TRUE);
3512                 break;
3513         default:
3514                 break;
3515         }
3516         g_string_append_printf (str, ")");
3517         return g_string_free (str, FALSE);
3518 }
3519
3520 /*
3521  * is_plt_patch:
3522  *
3523  *   Return whenever PATCH_INFO refers to a direct call, and thus requires a
3524  * PLT entry.
3525  */
3526 static inline gboolean
3527 is_plt_patch (MonoJumpInfo *patch_info)
3528 {
3529         switch (patch_info->type) {
3530         case MONO_PATCH_INFO_METHOD:
3531         case MONO_PATCH_INFO_INTERNAL_METHOD:
3532         case MONO_PATCH_INFO_JIT_ICALL_ADDR:
3533         case MONO_PATCH_INFO_ICALL_ADDR_CALL:
3534         case MONO_PATCH_INFO_RGCTX_FETCH:
3535                 return TRUE;
3536         default:
3537                 return FALSE;
3538         }
3539 }
3540
3541 /*
3542  * get_plt_symbol:
3543  *
3544  *   Return the symbol identifying the plt entry PLT_OFFSET.
3545  */
3546 static char*
3547 get_plt_symbol (MonoAotCompile *acfg, int plt_offset, MonoJumpInfo *patch_info)
3548 {
3549 #ifdef TARGET_MACH
3550         /*
3551          * The Apple linker reorganizes object files, so it doesn't like branches to local
3552          * labels, since those have no relocations.
3553          */
3554         return g_strdup_printf ("%sp_%d", acfg->llvm_label_prefix, plt_offset);
3555 #else
3556         return g_strdup_printf ("%sp_%d", acfg->temp_prefix, plt_offset);
3557 #endif
3558 }
3559
3560 /*
3561  * get_plt_entry:
3562  *
3563  *   Return a PLT entry which belongs to the method identified by PATCH_INFO.
3564  */
3565 static MonoPltEntry*
3566 get_plt_entry (MonoAotCompile *acfg, MonoJumpInfo *patch_info)
3567 {
3568         MonoPltEntry *res;
3569         gboolean synchronized = FALSE;
3570         static int synchronized_symbol_idx;
3571
3572         if (!is_plt_patch (patch_info))
3573                 return NULL;
3574
3575         if (!acfg->patch_to_plt_entry [patch_info->type])
3576                 acfg->patch_to_plt_entry [patch_info->type] = g_hash_table_new (mono_patch_info_hash, mono_patch_info_equal);
3577         res = (MonoPltEntry *)g_hash_table_lookup (acfg->patch_to_plt_entry [patch_info->type], patch_info);
3578
3579         if (!acfg->llvm && patch_info->type == MONO_PATCH_INFO_METHOD && (patch_info->data.method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED)) {
3580                 /*
3581                  * Allocate a separate PLT slot for each such patch, since some plt
3582                  * entries will refer to the method itself, and some will refer to the
3583                  * wrapper.
3584                  */
3585                 res = NULL;
3586                 synchronized = TRUE;
3587         }
3588
3589         if (!res) {
3590                 MonoJumpInfo *new_ji;
3591
3592                 new_ji = mono_patch_info_dup_mp (acfg->mempool, patch_info);
3593
3594                 res = (MonoPltEntry *)mono_mempool_alloc0 (acfg->mempool, sizeof (MonoPltEntry));
3595                 res->plt_offset = acfg->plt_offset;
3596                 res->ji = new_ji;
3597                 res->symbol = get_plt_symbol (acfg, res->plt_offset, patch_info);
3598                 if (acfg->aot_opts.write_symbols)
3599                         res->debug_sym = get_plt_entry_debug_sym (acfg, res->ji, acfg->plt_entry_debug_sym_cache);
3600                 if (synchronized) {
3601                         /* Avoid duplicate symbols because we don't cache */
3602                         res->symbol = g_strdup_printf ("%s_%d", res->symbol, synchronized_symbol_idx);
3603                         if (res->debug_sym)
3604                                 res->debug_sym = g_strdup_printf ("%s_%d", res->debug_sym, synchronized_symbol_idx);
3605                         synchronized_symbol_idx ++;
3606                 }
3607                 if (res->debug_sym)
3608                         res->llvm_symbol = g_strdup_printf ("%s_%s_llvm", res->symbol, res->debug_sym);
3609                 else
3610                         res->llvm_symbol = g_strdup_printf ("%s_llvm", res->symbol);
3611
3612                 g_hash_table_insert (acfg->patch_to_plt_entry [new_ji->type], new_ji, res);
3613
3614                 g_hash_table_insert (acfg->plt_offset_to_entry, GUINT_TO_POINTER (res->plt_offset), res);
3615
3616                 //g_assert (mono_patch_info_equal (patch_info, new_ji));
3617                 //mono_print_ji (patch_info); printf ("\n");
3618                 //g_hash_table_print_stats (acfg->patch_to_plt_entry);
3619
3620                 acfg->plt_offset ++;
3621         }
3622
3623         return res;
3624 }
3625
3626 /**
3627  * get_got_offset:
3628  *
3629  *   Returns the offset of the GOT slot where the runtime object resulting from resolving
3630  * JI could be found if it exists, otherwise allocates a new one.
3631  */
3632 static guint32
3633 get_got_offset (MonoAotCompile *acfg, gboolean llvm, MonoJumpInfo *ji)
3634 {
3635         guint32 got_offset;
3636         GotInfo *info = llvm ? &acfg->llvm_got_info : &acfg->got_info;
3637
3638         got_offset = GPOINTER_TO_UINT (g_hash_table_lookup (info->patch_to_got_offset_by_type [ji->type], ji));
3639         if (got_offset)
3640                 return got_offset - 1;
3641
3642         if (llvm) {
3643                 got_offset = acfg->llvm_got_offset;
3644                 acfg->llvm_got_offset ++;
3645         } else {
3646                 got_offset = acfg->got_offset;
3647                 acfg->got_offset ++;
3648         }
3649
3650         acfg->stats.got_slots ++;
3651         acfg->stats.got_slot_types [ji->type] ++;
3652
3653         g_hash_table_insert (info->patch_to_got_offset, ji, GUINT_TO_POINTER (got_offset + 1));
3654         g_hash_table_insert (info->patch_to_got_offset_by_type [ji->type], ji, GUINT_TO_POINTER (got_offset + 1));
3655         g_ptr_array_add (info->got_patches, ji);
3656
3657         return got_offset;
3658 }
3659
3660 /* Add a method to the list of methods which need to be emitted */
3661 static void
3662 add_method_with_index (MonoAotCompile *acfg, MonoMethod *method, int index, gboolean extra)
3663 {
3664         g_assert (method);
3665         if (!g_hash_table_lookup (acfg->method_indexes, method)) {
3666                 g_ptr_array_add (acfg->methods, method);
3667                 g_hash_table_insert (acfg->method_indexes, method, GUINT_TO_POINTER (index + 1));
3668                 acfg->nmethods = acfg->methods->len + 1;
3669         }
3670
3671         if (method->wrapper_type || extra)
3672                 g_ptr_array_add (acfg->extra_methods, method);
3673 }
3674
3675 static gboolean
3676 prefer_gsharedvt_method (MonoAotCompile *acfg, MonoMethod *method)
3677 {
3678         /* One instantiation with valuetypes is generated for each async method */
3679         if (m_class_get_image (method->klass) == mono_defaults.corlib && (!strcmp (m_class_get_name (method->klass), "AsyncMethodBuilderCore") || !strcmp (m_class_get_name (method->klass), "AsyncVoidMethodBuilder")))
3680                 return TRUE;
3681         else
3682                 return FALSE;
3683 }
3684
3685 static guint32
3686 get_method_index (MonoAotCompile *acfg, MonoMethod *method)
3687 {
3688         int index = GPOINTER_TO_UINT (g_hash_table_lookup (acfg->method_indexes, method));
3689
3690         g_assert (index);
3691
3692         return index - 1;
3693 }
3694
3695 static int
3696 add_method_full (MonoAotCompile *acfg, MonoMethod *method, gboolean extra, int depth)
3697 {
3698         int index;
3699
3700         index = GPOINTER_TO_UINT (g_hash_table_lookup (acfg->method_indexes, method));
3701         if (index)
3702                 return index - 1;
3703
3704         index = acfg->method_index;
3705         add_method_with_index (acfg, method, index, extra);
3706
3707         g_ptr_array_add (acfg->method_order, GUINT_TO_POINTER (index));
3708
3709         g_hash_table_insert (acfg->method_depth, method, GUINT_TO_POINTER (depth));
3710
3711         acfg->method_index ++;
3712
3713         return index;
3714 }
3715
3716 static int
3717 add_method (MonoAotCompile *acfg, MonoMethod *method)
3718 {
3719         return add_method_full (acfg, method, FALSE, 0);
3720 }
3721
3722 static void
3723 mono_dedup_cache_method (MonoAotCompile *acfg, MonoMethod *method)
3724 {
3725         g_assert (acfg->dedup_stats);
3726
3727         char *name = mono_aot_get_mangled_method_name (method);
3728         g_assert (name);
3729
3730         // For stats
3731         char *stats_name = g_strdup (name);
3732
3733         g_assert (acfg->dedup_cache);
3734
3735         if (!g_hash_table_lookup (acfg->dedup_cache, name)) {
3736                 // This AOTCompile owns this method
3737                 // We do this to decide whether to write it to disk
3738                 // during a dedup run (first phase, where we skip).
3739                 //
3740                 // If never changed, then maybe can avoid a recompile
3741                 // of the cache.
3742                 //
3743                 // Files not read in during last phase.
3744                 acfg->dedup_cache_changed = TRUE;
3745
3746                 // owns name
3747                 g_hash_table_insert (acfg->dedup_cache, name, method);
3748         } else {
3749                 // owns name
3750                 g_free (name);
3751         }
3752
3753         guint count = GPOINTER_TO_UINT (g_hash_table_lookup (acfg->dedup_stats, stats_name));
3754         count++;
3755         g_hash_table_insert (acfg->dedup_stats, stats_name, GUINT_TO_POINTER (count));
3756 }
3757
3758 static void
3759 add_extra_method_with_depth (MonoAotCompile *acfg, MonoMethod *method, int depth)
3760 {
3761         ERROR_DECL (error);
3762         if (mono_method_is_generic_sharable_full (method, TRUE, TRUE, FALSE)) {
3763                 method = mini_get_shared_method_full (method, SHARE_MODE_NONE, error);
3764                 mono_error_assert_ok (error);
3765         }
3766         else if ((acfg->opts & MONO_OPT_GSHAREDVT) && prefer_gsharedvt_method (acfg, method) && mono_method_is_generic_sharable_full (method, FALSE, FALSE, TRUE)) {
3767                 /* Use the gsharedvt version */
3768                 method = mini_get_shared_method_full (method, SHARE_MODE_GSHAREDVT, error);
3769                 mono_error_assert_ok (error);
3770         }
3771
3772         if ((acfg->aot_opts.dedup || acfg->aot_opts.dedup_include) && mono_aot_can_dedup (method)) {
3773                 mono_dedup_cache_method (acfg, method);
3774
3775                 if (!acfg->dedup_emit_mode)
3776                         return;
3777         }
3778
3779         if (acfg->aot_opts.log_generics)
3780                 aot_printf (acfg, "%*sAdding method %s.\n", depth, "", mono_method_get_full_name (method));
3781
3782         add_method_full (acfg, method, TRUE, depth);
3783 }
3784
3785 static void
3786 add_extra_method (MonoAotCompile *acfg, MonoMethod *method)
3787 {
3788         add_extra_method_with_depth (acfg, method, 0);
3789 }
3790
3791 static void
3792 add_jit_icall_wrapper (gpointer key, gpointer value, gpointer user_data)
3793 {
3794         MonoAotCompile *acfg = (MonoAotCompile *)user_data;
3795         MonoJitICallInfo *callinfo = (MonoJitICallInfo *)value;
3796         MonoMethod *wrapper;
3797         char *name;
3798
3799         if (!callinfo->sig)
3800                 return;
3801
3802         name = g_strdup_printf ("__icall_wrapper_%s", callinfo->name);
3803         wrapper = mono_marshal_get_icall_wrapper (callinfo->sig, name, callinfo->func, TRUE);
3804         g_free (name);
3805
3806         add_method (acfg, wrapper);
3807 }
3808
3809 static MonoMethod*
3810 get_runtime_invoke_sig (MonoMethodSignature *sig)
3811 {
3812         MonoMethodBuilder *mb;
3813         MonoMethod *m;
3814
3815         mb = mono_mb_new (mono_defaults.object_class, "FOO", MONO_WRAPPER_NONE);
3816         m = mono_mb_create_method (mb, sig, 16);
3817         MonoMethod *invoke = mono_marshal_get_runtime_invoke (m, FALSE);
3818         mono_mb_free (mb);
3819         return invoke;
3820 }
3821
3822 static MonoMethod*
3823 get_runtime_invoke (MonoAotCompile *acfg, MonoMethod *method, gboolean virtual_)
3824 {
3825         return mono_marshal_get_runtime_invoke (method, virtual_);
3826 }
3827
3828 static gboolean
3829 can_marshal_struct (MonoClass *klass)
3830 {
3831         MonoClassField *field;
3832         gboolean can_marshal = TRUE;
3833         gpointer iter = NULL;
3834         MonoMarshalType *info;
3835         int i;
3836
3837         if (mono_class_is_auto_layout (klass))
3838                 return FALSE;
3839
3840         info = mono_marshal_load_type_info (klass);
3841
3842         /* Only allow a few field types to avoid asserts in the marshalling code */
3843         while ((field = mono_class_get_fields (klass, &iter))) {
3844                 if ((field->type->attrs & FIELD_ATTRIBUTE_STATIC))
3845                         continue;
3846
3847                 switch (field->type->type) {
3848                 case MONO_TYPE_I4:
3849                 case MONO_TYPE_U4:
3850                 case MONO_TYPE_I1:
3851                 case MONO_TYPE_U1:
3852                 case MONO_TYPE_BOOLEAN:
3853                 case MONO_TYPE_I2:
3854                 case MONO_TYPE_U2:
3855                 case MONO_TYPE_CHAR:
3856                 case MONO_TYPE_I8:
3857                 case MONO_TYPE_U8:
3858                 case MONO_TYPE_I:
3859                 case MONO_TYPE_U:
3860                 case MONO_TYPE_PTR:
3861                 case MONO_TYPE_R4:
3862                 case MONO_TYPE_R8:
3863                 case MONO_TYPE_STRING:
3864                         break;
3865                 case MONO_TYPE_VALUETYPE:
3866                         if (!m_class_is_enumtype (mono_class_from_mono_type (field->type)) && !can_marshal_struct (mono_class_from_mono_type (field->type)))
3867                                 can_marshal = FALSE;
3868                         break;
3869                 case MONO_TYPE_SZARRAY: {
3870                         gboolean has_mspec = FALSE;
3871
3872                         if (info) {
3873                                 for (i = 0; i < info->num_fields; ++i) {
3874                                         if (info->fields [i].field == field && info->fields [i].mspec)
3875                                                 has_mspec = TRUE;
3876                                 }
3877                         }
3878                         if (!has_mspec)
3879                                 can_marshal = FALSE;
3880                         break;
3881                 }
3882                 default:
3883                         can_marshal = FALSE;
3884                         break;
3885                 }
3886         }
3887
3888         /* Special cases */
3889         /* Its hard to compute whenever these can be marshalled or not */
3890         if (!strcmp (m_class_get_name_space (klass), "System.Net.NetworkInformation.MacOsStructs") && strcmp (m_class_get_name (klass), "sockaddr_dl"))
3891                 return TRUE;
3892
3893         return can_marshal;
3894 }
3895
3896 static void
3897 create_gsharedvt_inst (MonoAotCompile *acfg, MonoMethod *method, MonoGenericContext *ctx)
3898 {
3899         /* Create a vtype instantiation */
3900         MonoGenericContext shared_context;
3901         MonoType **args;
3902         MonoGenericInst *inst;
3903         MonoGenericContainer *container;
3904         MonoClass **constraints;
3905         int i;
3906
3907         memset (ctx, 0, sizeof (MonoGenericContext));
3908
3909         if (mono_class_is_gtd (method->klass)) {
3910                 shared_context = mono_class_get_generic_container (method->klass)->context;
3911                 inst = shared_context.class_inst;
3912
3913                 args = g_new0 (MonoType*, inst->type_argc);
3914                 for (i = 0; i < inst->type_argc; ++i) {
3915                         args [i] = m_class_get_byval_arg (mono_defaults.int_class);
3916                 }
3917                 ctx->class_inst = mono_metadata_get_generic_inst (inst->type_argc, args);
3918         }
3919         if (method->is_generic) {
3920                 container = mono_method_get_generic_container (method);
3921                 g_assert (!container->is_anonymous && container->is_method);
3922                 shared_context = container->context;
3923                 inst = shared_context.method_inst;
3924
3925                 args = g_new0 (MonoType*, inst->type_argc);
3926                 for (i = 0; i < container->type_argc; ++i) {
3927                         MonoGenericParamInfo *info = mono_generic_param_info (&container->type_params [i]);
3928                         gboolean ref_only = FALSE;
3929
3930                         if (info && info->constraints) {
3931                                 constraints = info->constraints;
3932
3933                                 while (*constraints) {
3934                                         MonoClass *cklass = *constraints;
3935                                         if (!(cklass == mono_defaults.object_class || (m_class_get_image (cklass) == mono_defaults.corlib && !strcmp (m_class_get_name (cklass), "ValueType"))))
3936                                                 /* Inflaring the method with our vtype would not be valid */
3937                                                 ref_only = TRUE;
3938                                         constraints ++;
3939                                 }
3940                         }
3941
3942                         if (ref_only)
3943                                 args [i] = m_class_get_byval_arg (mono_defaults.object_class);
3944                         else
3945                                 args [i] = m_class_get_byval_arg (mono_defaults.int_class);
3946                 }
3947                 ctx->method_inst = mono_metadata_get_generic_inst (inst->type_argc, args);
3948         }
3949 }
3950
3951 static void
3952 add_wrappers (MonoAotCompile *acfg)
3953 {
3954         MonoMethod *method, *m;
3955         int i, j;
3956         MonoMethodSignature *sig, *csig;
3957         guint32 token;
3958
3959         /*
3960          * FIXME: Instead of AOTing all the wrappers, it might be better to redesign them
3961          * so there is only one wrapper of a given type, or inlining their contents into their
3962          * callers.
3963          */
3964         for (i = 0; i < acfg->image->tables [MONO_TABLE_METHOD].rows; ++i) {
3965                 ERROR_DECL (error);
3966                 MonoMethod *method;
3967                 guint32 token = MONO_TOKEN_METHOD_DEF | (i + 1);
3968                 gboolean skip = FALSE;
3969
3970                 method = mono_get_method_checked (acfg->image, token, NULL, NULL, error);
3971                 report_loader_error (acfg, error, TRUE, "Failed to load method token 0x%x due to %s\n", i, mono_error_get_message (error));
3972
3973                 if ((method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
3974                         (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
3975                         (method->flags & METHOD_ATTRIBUTE_ABSTRACT))
3976                         skip = TRUE;
3977
3978                 /* Skip methods which can not be handled by get_runtime_invoke () */
3979                 sig = mono_method_signature (method);
3980                 if (!sig)
3981                         continue;
3982                 if ((sig->ret->type == MONO_TYPE_PTR) ||
3983                         (sig->ret->type == MONO_TYPE_TYPEDBYREF))
3984                         skip = TRUE;
3985                 if (mono_class_is_open_constructed_type (sig->ret))
3986                         skip = TRUE;
3987
3988                 for (j = 0; j < sig->param_count; j++) {
3989                         if (sig->params [j]->type == MONO_TYPE_TYPEDBYREF)
3990                                 skip = TRUE;
3991                         if (mono_class_is_open_constructed_type (sig->params [j]))
3992                                 skip = TRUE;
3993                 }
3994
3995 #ifdef MONO_ARCH_DYN_CALL_SUPPORTED
3996                 if (!mono_class_is_contextbound (method->klass)) {
3997                         MonoDynCallInfo *info = mono_arch_dyn_call_prepare (sig);
3998                         gboolean has_nullable = FALSE;
3999
4000                         for (j = 0; j < sig->param_count; j++) {
4001                                 if (sig->params [j]->type == MONO_TYPE_GENERICINST && mono_class_is_nullable (mono_class_from_mono_type (sig->params [j])))
4002                                         has_nullable = TRUE;
4003                         }
4004
4005                         if (info && !has_nullable && !acfg->aot_opts.llvm_only) {
4006                                 /* Supported by the dynamic runtime-invoke wrapper */
4007                                 skip = TRUE;
4008                         }
4009                         if (info)
4010                                 mono_arch_dyn_call_free (info);
4011                 }
4012 #endif
4013
4014                 if (acfg->aot_opts.llvm_only)
4015                         /* Supported by the gsharedvt based runtime-invoke wrapper */
4016                         skip = TRUE;
4017
4018                 if (!skip) {
4019                         //printf ("%s\n", mono_method_full_name (method, TRUE));
4020                         add_method (acfg, get_runtime_invoke (acfg, method, FALSE));
4021                 }
4022         }
4023
4024         if (strcmp (acfg->image->assembly->aname.name, "mscorlib") == 0) {
4025                 int nallocators;
4026
4027                 /* Runtime invoke wrappers */
4028
4029                 MonoType *void_type = m_class_get_byval_arg (mono_defaults.void_class);
4030                 MonoType *string_type = m_class_get_byval_arg (mono_defaults.string_class);
4031
4032                 /* void runtime-invoke () [.cctor] */
4033                 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 0);
4034                 csig->ret = void_type;
4035                 add_method (acfg, get_runtime_invoke_sig (csig));
4036
4037                 /* void runtime-invoke () [Finalize] */
4038                 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 0);
4039                 csig->hasthis = 1;
4040                 csig->ret = void_type;
4041                 add_method (acfg, get_runtime_invoke_sig (csig));
4042
4043                 /* void runtime-invoke (string) [exception ctor] */
4044                 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 1);
4045                 csig->hasthis = 1;
4046                 csig->ret = void_type;
4047                 csig->params [0] = string_type;
4048                 add_method (acfg, get_runtime_invoke_sig (csig));
4049
4050                 /* void runtime-invoke (string, string) [exception ctor] */
4051                 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 2);
4052                 csig->hasthis = 1;
4053                 csig->ret = void_type;
4054                 csig->params [0] = string_type;
4055                 csig->params [1] = string_type;
4056                 add_method (acfg, get_runtime_invoke_sig (csig));
4057
4058                 /* string runtime-invoke () [Exception.ToString ()] */
4059                 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 0);
4060                 csig->hasthis = 1;
4061                 csig->ret = string_type;
4062                 add_method (acfg, get_runtime_invoke_sig (csig));
4063
4064                 /* void runtime-invoke (string, Exception) [exception ctor] */
4065                 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 2);
4066                 csig->hasthis = 1;
4067                 csig->ret = void_type;
4068                 csig->params [0] = string_type;
4069                 csig->params [1] = m_class_get_byval_arg (mono_defaults.exception_class);
4070                 add_method (acfg, get_runtime_invoke_sig (csig));
4071
4072                 /* Assembly runtime-invoke (string, Assembly, bool) [DoAssemblyResolve] */
4073                 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 3);
4074                 csig->hasthis = 1;
4075                 csig->ret = m_class_get_byval_arg (mono_class_load_from_name (mono_defaults.corlib, "System.Reflection", "Assembly"));
4076                 csig->params [0] = string_type;
4077                 csig->params [1] = m_class_get_byval_arg (mono_class_load_from_name (mono_defaults.corlib, "System.Reflection", "Assembly"));
4078                 csig->params [2] = m_class_get_byval_arg (mono_defaults.boolean_class);
4079                 add_method (acfg, get_runtime_invoke_sig (csig));
4080
4081                 /* runtime-invoke used by finalizers */
4082                 add_method (acfg, get_runtime_invoke (acfg, mono_class_get_method_from_name_flags (mono_defaults.object_class, "Finalize", 0, 0), TRUE));
4083
4084                 /* This is used by mono_runtime_capture_context () */
4085                 method = mono_get_context_capture_method ();
4086                 if (method)
4087                         add_method (acfg, get_runtime_invoke (acfg, method, FALSE));
4088
4089 #ifdef MONO_ARCH_DYN_CALL_SUPPORTED
4090                 if (!acfg->aot_opts.llvm_only)
4091                         add_method (acfg, mono_marshal_get_runtime_invoke_dynamic ());
4092 #endif
4093
4094                 /* These are used by mono_jit_runtime_invoke () to calls gsharedvt out wrappers */
4095                 if (acfg->aot_opts.llvm_only) {
4096                         int variants;
4097
4098                         /* Create simplified signatures which match the signature used by the gsharedvt out wrappers */
4099                         for (variants = 0; variants < 4; ++variants) {
4100                                 for (i = 0; i < 16; ++i) {
4101                                         sig = mini_get_gsharedvt_out_sig_wrapper_signature ((variants & 1) > 0, (variants & 2) > 0, i);
4102                                         add_extra_method (acfg, mono_marshal_get_runtime_invoke_for_sig (sig));
4103
4104                                         g_free (sig);
4105                                 }
4106                         }
4107                 }
4108
4109                 /* stelemref */
4110                 add_method (acfg, mono_marshal_get_stelemref ());
4111
4112                 /* Managed Allocators */
4113                 nallocators = mono_gc_get_managed_allocator_types ();
4114                 for (i = 0; i < nallocators; ++i) {
4115                         if ((m = mono_gc_get_managed_allocator_by_type (i, MANAGED_ALLOCATOR_REGULAR)))
4116                                 add_method (acfg, m);
4117                         if ((m = mono_gc_get_managed_allocator_by_type (i, MANAGED_ALLOCATOR_SLOW_PATH)))
4118                                 add_method (acfg, m);
4119                         if ((m = mono_gc_get_managed_allocator_by_type (i, MANAGED_ALLOCATOR_PROFILER)))
4120                                 add_method (acfg, m);
4121                 }
4122
4123                 /* write barriers */
4124                 if (mono_gc_is_moving ()) {
4125                         add_method (acfg, mono_gc_get_specific_write_barrier (FALSE));
4126                         add_method (acfg, mono_gc_get_specific_write_barrier (TRUE));
4127                 }
4128
4129                 /* Stelemref wrappers */
4130                 {
4131                         MonoMethod **wrappers;
4132                         int nwrappers;
4133
4134                         wrappers = mono_marshal_get_virtual_stelemref_wrappers (&nwrappers);
4135                         for (i = 0; i < nwrappers; ++i)
4136                                 add_method (acfg, wrappers [i]);
4137                         g_free (wrappers);
4138                 }
4139
4140                 /* castclass_with_check wrapper */
4141                 add_method (acfg, mono_marshal_get_castclass_with_cache ());
4142                 /* isinst_with_check wrapper */
4143                 add_method (acfg, mono_marshal_get_isinst_with_cache ());
4144
4145                 /* JIT icall wrappers */
4146                 /* FIXME: locking - this is "safe" as full-AOT threads don't mutate the icall hash*/
4147                 g_hash_table_foreach (mono_get_jit_icall_info (), add_jit_icall_wrapper, acfg);
4148         }
4149
4150         /*
4151          * remoting-invoke-with-check wrappers are very frequent, so avoid emitting them,
4152          * we use the original method instead at runtime.
4153          * Since full-aot doesn't support remoting, this is not a problem.
4154          */
4155 #if 0
4156         /* remoting-invoke wrappers */
4157         for (i = 0; i < acfg->image->tables [MONO_TABLE_METHOD].rows; ++i) {
4158                 ERROR_DECL (error);
4159                 MonoMethodSignature *sig;
4160
4161                 token = MONO_TOKEN_METHOD_DEF | (i + 1);
4162                 method = mono_get_method_checked (acfg->image, token, NULL, NULL, error);
4163                 g_assert (mono_error_ok (error)); /* FIXME don't swallow the error */
4164
4165                 sig = mono_method_signature (method);
4166
4167                 if (sig->hasthis && (method->klass->marshalbyref || method->klass == mono_defaults.object_class)) {
4168                         m = mono_marshal_get_remoting_invoke_with_check (method);
4169
4170                         add_method (acfg, m);
4171                 }
4172         }
4173 #endif
4174
4175         /* delegate-invoke wrappers */
4176         for (i = 0; i < acfg->image->tables [MONO_TABLE_TYPEDEF].rows; ++i) {
4177                 ERROR_DECL (error);
4178                 MonoClass *klass;
4179                 MonoCustomAttrInfo *cattr;
4180
4181                 token = MONO_TOKEN_TYPE_DEF | (i + 1);
4182                 klass = mono_class_get_checked (acfg->image, token, error);
4183
4184                 if (!klass) {
4185                         mono_error_cleanup (error);
4186                         continue;
4187                 }
4188
4189                 if (!m_class_is_delegate (klass) || klass == mono_defaults.delegate_class || klass == mono_defaults.multicastdelegate_class)
4190                         continue;
4191
4192                 if (!mono_class_is_gtd (klass)) {
4193                         method = mono_get_delegate_invoke (klass);
4194
4195                         m = mono_marshal_get_delegate_invoke (method, NULL);
4196
4197                         add_method (acfg, m);
4198
4199                         method = mono_class_get_method_from_name_flags (klass, "BeginInvoke", -1, 0);
4200                         if (method)
4201                                 add_method (acfg, mono_marshal_get_delegate_begin_invoke (method));
4202
4203                         method = mono_class_get_method_from_name_flags (klass, "EndInvoke", -1, 0);
4204                         if (method)
4205                                 add_method (acfg, mono_marshal_get_delegate_end_invoke (method));
4206
4207                         cattr = mono_custom_attrs_from_class_checked (klass, error);
4208                         if (!is_ok (error)) {
4209                                 mono_error_cleanup (error);
4210                                 continue;
4211                         }
4212
4213                         if (cattr) {
4214                                 int j;
4215
4216                                 for (j = 0; j < cattr->num_attrs; ++j)
4217                                         if (cattr->attrs [j].ctor && (!strcmp (m_class_get_name (cattr->attrs [j].ctor->klass), "MonoNativeFunctionWrapperAttribute") || !strcmp (m_class_get_name (cattr->attrs [j].ctor->klass), "UnmanagedFunctionPointerAttribute")))
4218                                                 break;
4219                                 if (j < cattr->num_attrs) {
4220                                         MonoMethod *invoke;
4221                                         MonoMethod *wrapper;
4222                                         MonoMethod *del_invoke;
4223
4224                                         /* Add wrappers needed by mono_ftnptr_to_delegate () */
4225                                         invoke = mono_get_delegate_invoke (klass);
4226                                         wrapper = mono_marshal_get_native_func_wrapper_aot (klass);
4227                                         del_invoke = mono_marshal_get_delegate_invoke_internal (invoke, FALSE, TRUE, wrapper);
4228                                         add_method (acfg, wrapper);
4229                                         add_method (acfg, del_invoke);
4230                                 }
4231                         }
4232                 } else if ((acfg->opts & MONO_OPT_GSHAREDVT) && mono_class_is_gtd (klass)) {
4233                         ERROR_DECL (error);
4234                         MonoGenericContext ctx;
4235                         MonoMethod *inst, *gshared;
4236
4237                         /*
4238                          * Emit gsharedvt versions of the generic delegate-invoke wrappers
4239                          */
4240                         /* Invoke */
4241                         method = mono_get_delegate_invoke (klass);
4242                         create_gsharedvt_inst (acfg, method, &ctx);
4243
4244                         inst = mono_class_inflate_generic_method_checked (method, &ctx, error);
4245                         g_assert (mono_error_ok (error)); /* FIXME don't swallow the error */
4246
4247                         m = mono_marshal_get_delegate_invoke (inst, NULL);
4248                         g_assert (m->is_inflated);
4249
4250                         gshared = mini_get_shared_method_full (m, SHARE_MODE_GSHAREDVT, error);
4251                         mono_error_assert_ok (error);
4252
4253                         add_extra_method (acfg, gshared);
4254
4255                         /* begin-invoke */
4256                         method = mono_get_delegate_begin_invoke (klass);
4257                         if (method) {
4258                                 create_gsharedvt_inst (acfg, method, &ctx);
4259
4260                                 inst = mono_class_inflate_generic_method_checked (method, &ctx, error);
4261                                 g_assert (mono_error_ok (error)); /* FIXME don't swallow the error */
4262
4263                                 m = mono_marshal_get_delegate_begin_invoke (inst);
4264                                 g_assert (m->is_inflated);
4265
4266                                 gshared = mini_get_shared_method_full (m, SHARE_MODE_GSHAREDVT, error);
4267                                 mono_error_assert_ok (error);
4268
4269                                 add_extra_method (acfg, gshared);
4270                         }
4271
4272                         /* end-invoke */
4273                         method = mono_get_delegate_end_invoke (klass);
4274                         if (method) {
4275                                 create_gsharedvt_inst (acfg, method, &ctx);
4276
4277                                 inst = mono_class_inflate_generic_method_checked (method, &ctx, error);
4278                                 g_assert (mono_error_ok (error)); /* FIXME don't swallow the error */
4279
4280                                 m = mono_marshal_get_delegate_end_invoke (inst);
4281                                 g_assert (m->is_inflated);
4282
4283                                 gshared = mini_get_shared_method_full (m, SHARE_MODE_GSHAREDVT, error);
4284                                 mono_error_assert_ok (error);
4285
4286                                 add_extra_method (acfg, gshared);
4287                         }
4288                 }
4289         }
4290
4291         /* array access wrappers */
4292         for (i = 0; i < acfg->image->tables [MONO_TABLE_TYPESPEC].rows; ++i) {
4293                 ERROR_DECL (error);
4294                 MonoClass *klass;
4295
4296                 token = MONO_TOKEN_TYPE_SPEC | (i + 1);
4297                 klass = mono_class_get_checked (acfg->image, token, error);
4298
4299                 if (!klass) {
4300                         mono_error_cleanup (error);
4301                         continue;
4302                 }
4303
4304                 if (m_class_get_rank (klass) && MONO_TYPE_IS_PRIMITIVE (m_class_get_byval_arg (m_class_get_element_class (klass)))) {
4305                         MonoMethod *m, *wrapper;
4306
4307                         /* Add runtime-invoke wrappers too */
4308
4309                         m = mono_class_get_method_from_name (klass, "Get", -1);
4310                         g_assert (m);
4311                         wrapper = mono_marshal_get_array_accessor_wrapper (m);
4312                         add_extra_method (acfg, wrapper);
4313                         if (!acfg->aot_opts.llvm_only)
4314                                 add_extra_method (acfg, get_runtime_invoke (acfg, wrapper, FALSE));
4315
4316                         m = mono_class_get_method_from_name (klass, "Set", -1);
4317                         g_assert (m);
4318                         wrapper = mono_marshal_get_array_accessor_wrapper (m);
4319                         add_extra_method (acfg, wrapper);
4320                         if (!acfg->aot_opts.llvm_only)
4321                                 add_extra_method (acfg, get_runtime_invoke (acfg, wrapper, FALSE));
4322                 }
4323         }
4324
4325         /* Synchronized wrappers */
4326         for (i = 0; i < acfg->image->tables [MONO_TABLE_METHOD].rows; ++i) {
4327                 ERROR_DECL (error);
4328                 token = MONO_TOKEN_METHOD_DEF | (i + 1);
4329                 method = mono_get_method_checked (acfg->image, token, NULL, NULL, error);
4330                 report_loader_error (acfg, error, TRUE, "Failed to load method token 0x%x due to %s\n", i, mono_error_get_message (error));
4331
4332                 if (method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) {
4333                         if (method->is_generic) {
4334                                 // FIXME:
4335                         } else if ((acfg->opts & MONO_OPT_GSHAREDVT) && mono_class_is_gtd (method->klass)) {
4336                                 ERROR_DECL (error);
4337                                 MonoGenericContext ctx;
4338                                 MonoMethod *inst, *gshared, *m;
4339
4340                                 /*
4341                                  * Create a generic wrapper for a generic instance, and AOT that.
4342                                  */
4343                                 create_gsharedvt_inst (acfg, method, &ctx);
4344                                 inst = mono_class_inflate_generic_method_checked (method, &ctx, error);
4345                                 g_assert (mono_error_ok (error)); /* FIXME don't swallow the error */
4346                                 m = mono_marshal_get_synchronized_wrapper (inst);
4347                                 g_assert (m->is_inflated);
4348                                 gshared = mini_get_shared_method_full (m, SHARE_MODE_GSHAREDVT, error);
4349                                 mono_error_assert_ok (error);
4350
4351                                 add_method (acfg, gshared);
4352                         } else {
4353                                 add_method (acfg, mono_marshal_get_synchronized_wrapper (method));
4354                         }
4355                 }
4356         }
4357
4358         /* pinvoke wrappers */
4359         for (i = 0; i < acfg->image->tables [MONO_TABLE_METHOD].rows; ++i) {
4360                 ERROR_DECL (error);
4361                 MonoMethod *method;
4362                 guint32 token = MONO_TOKEN_METHOD_DEF | (i + 1);
4363
4364                 method = mono_get_method_checked (acfg->image, token, NULL, NULL, error);
4365                 report_loader_error (acfg, error, TRUE, "Failed to load method token 0x%x due to %s\n", i, mono_error_get_message (error));
4366
4367                 if ((method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
4368                         (method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL)) {
4369                         add_method (acfg, mono_marshal_get_native_wrapper (method, TRUE, TRUE));
4370                 }
4371
4372                 if (method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) {
4373                         if (acfg->aot_opts.llvm_only) {
4374                                 /* The wrappers have a different signature (hasthis is not set) so need to add this too */
4375                                 add_gsharedvt_wrappers (acfg, mono_method_signature (method), FALSE, TRUE, FALSE);
4376                         }
4377                 }
4378         }
4379
4380         /* native-to-managed wrappers */
4381         for (i = 0; i < acfg->image->tables [MONO_TABLE_METHOD].rows; ++i) {
4382                 ERROR_DECL (error);
4383                 MonoMethod *method;
4384                 guint32 token = MONO_TOKEN_METHOD_DEF | (i + 1);
4385                 MonoCustomAttrInfo *cattr;
4386                 int j;
4387
4388                 method = mono_get_method_checked (acfg->image, token, NULL, NULL, error);
4389                 report_loader_error (acfg, error, TRUE, "Failed to load method token 0x%x due to %s\n", i, mono_error_get_message (error));
4390
4391                 /*
4392                  * Only generate native-to-managed wrappers for methods which have an
4393                  * attribute named MonoPInvokeCallbackAttribute. We search for the attribute by
4394                  * name to avoid defining a new assembly to contain it.
4395                  */
4396                 cattr = mono_custom_attrs_from_method_checked (method, error);
4397                 if (!is_ok (error)) {
4398                         char *name = mono_method_get_full_name (method);
4399                         report_loader_error (acfg, error, TRUE, "Failed to load custom attributes from method %s due to %s\n", name, mono_error_get_message (error));
4400                         g_free (name);
4401                 }
4402
4403                 if (cattr) {
4404                         for (j = 0; j < cattr->num_attrs; ++j)
4405                                 if (cattr->attrs [j].ctor && !strcmp (m_class_get_name (cattr->attrs [j].ctor->klass), "MonoPInvokeCallbackAttribute"))
4406                                         break;
4407                         if (j < cattr->num_attrs) {
4408                                 MonoCustomAttrEntry *e = &cattr->attrs [j];
4409                                 MonoMethodSignature *sig = mono_method_signature (e->ctor);
4410                                 const char *p = (const char*)e->data;
4411                                 const char *named;
4412                                 int slen, num_named, named_type;
4413                                 char *n;
4414                                 MonoType *t;
4415                                 MonoClass *klass;
4416                                 char *export_name = NULL;
4417                                 MonoMethod *wrapper;
4418
4419                                 /* this cannot be enforced by the C# compiler so we must give the user some warning before aborting */
4420                                 if (!(method->flags & METHOD_ATTRIBUTE_STATIC)) {
4421                                         g_warning ("AOT restriction: Method '%s' must be static since it is decorated with [MonoPInvokeCallback]. See http://ios.xamarin.com/Documentation/Limitations#Reverse_Callbacks",
4422                                                 mono_method_full_name (method, TRUE));
4423                                         exit (1);
4424                                 }
4425
4426                                 g_assert (sig->param_count == 1);
4427                                 g_assert (sig->params [0]->type == MONO_TYPE_CLASS && !strcmp (m_class_get_name (mono_class_from_mono_type (sig->params [0])), "Type"));
4428
4429                                 /*
4430                                  * Decode the cattr manually since we can't create objects
4431                                  * during aot compilation.
4432                                  */
4433
4434                                 /* Skip prolog */
4435                                 p += 2;
4436
4437                                 /* From load_cattr_value () in reflection.c */
4438                                 slen = mono_metadata_decode_value (p, &p);
4439                                 n = (char *)g_memdup (p, slen + 1);
4440                                 n [slen] = 0;
4441                                 t = mono_reflection_type_from_name_checked (n, acfg->image, error);
4442                                 g_assert (t);
4443                                 mono_error_assert_ok (error);
4444                                 g_free (n);
4445
4446                                 klass = mono_class_from_mono_type (t);
4447                                 g_assert (m_class_get_parent (klass) == mono_defaults.multicastdelegate_class);
4448
4449                                 p += slen;
4450
4451                                 num_named = read16 (p);
4452                                 p += 2;
4453
4454                                 g_assert (num_named < 2);
4455                                 if (num_named == 1) {
4456                                         int name_len;
4457                                         char *name;
4458
4459                                         /* parse ExportSymbol attribute */
4460                                         named = p;
4461                                         named_type = *named;
4462                                         named += 1;
4463                                         /* data_type = *named; */
4464                                         named += 1;
4465
4466                                         name_len = mono_metadata_decode_blob_size (named, &named);
4467                                         name = (char *)g_malloc (name_len + 1);
4468                                         memcpy (name, named, name_len);
4469                                         name [name_len] = 0;
4470                                         named += name_len;
4471
4472                                         g_assert (named_type == 0x54);
4473                                         g_assert (!strcmp (name, "ExportSymbol"));
4474
4475                                         /* load_cattr_value (), string case */
4476                                         g_assert (*named != (char)0xff);
4477                                         slen = mono_metadata_decode_value (named, &named);
4478                                         export_name = (char *)g_malloc (slen + 1);
4479                                         memcpy (export_name, named, slen);
4480                                         export_name [slen] = 0;
4481                                         named += slen;
4482                                 }
4483
4484                                 wrapper = mono_marshal_get_managed_wrapper (method, klass, 0, error);
4485                                 mono_error_assert_ok (error);
4486
4487                                 add_method (acfg, wrapper);
4488                                 if (export_name)
4489                                         g_hash_table_insert (acfg->export_names, wrapper, export_name);
4490                         }
4491                         g_free (cattr);
4492                 }
4493
4494                 if ((method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
4495                         (method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL)) {
4496                         add_method (acfg, mono_marshal_get_native_wrapper (method, TRUE, TRUE));
4497                 }
4498         }
4499
4500         /* StructureToPtr/PtrToStructure wrappers */
4501         for (i = 0; i < acfg->image->tables [MONO_TABLE_TYPEDEF].rows; ++i) {
4502                 ERROR_DECL (error);
4503                 MonoClass *klass;
4504
4505                 token = MONO_TOKEN_TYPE_DEF | (i + 1);
4506                 klass = mono_class_get_checked (acfg->image, token, error);
4507
4508                 if (!klass) {
4509                         mono_error_cleanup (error);
4510                         continue;
4511                 }
4512
4513                 if (m_class_is_valuetype (klass) && !mono_class_is_gtd (klass) && can_marshal_struct (klass) &&
4514                         !(m_class_get_nested_in (klass) && strstr (m_class_get_name (m_class_get_nested_in (klass)), "<PrivateImplementationDetails>") == m_class_get_name (m_class_get_nested_in (klass)))) {
4515                         add_method (acfg, mono_marshal_get_struct_to_ptr (klass));
4516                         add_method (acfg, mono_marshal_get_ptr_to_struct (klass));
4517                 }
4518         }
4519 }
4520
4521 static gboolean
4522 has_type_vars (MonoClass *klass)
4523 {
4524         if ((m_class_get_byval_arg (klass)->type == MONO_TYPE_VAR) || (m_class_get_byval_arg (klass)->type == MONO_TYPE_MVAR))
4525                 return TRUE;
4526         if (m_class_get_rank (klass))
4527                 return has_type_vars (m_class_get_element_class (klass));
4528         if (mono_class_is_ginst (klass)) {
4529                 MonoGenericContext *context = &mono_class_get_generic_class (klass)->context;
4530                 if (context->class_inst) {
4531                         int i;
4532
4533                         for (i = 0; i < context->class_inst->type_argc; ++i)
4534                                 if (has_type_vars (mono_class_from_mono_type (context->class_inst->type_argv [i])))
4535                                         return TRUE;
4536                 }
4537         }
4538         if (mono_class_is_gtd (klass))
4539                 return TRUE;
4540         return FALSE;
4541 }
4542
4543 static gboolean
4544 is_vt_inst (MonoGenericInst *inst)
4545 {
4546         int i;
4547
4548         for (i = 0; i < inst->type_argc; ++i) {
4549                 MonoType *t = inst->type_argv [i];
4550                 if (MONO_TYPE_ISSTRUCT (t) || t->type == MONO_TYPE_VALUETYPE)
4551                         return TRUE;
4552         }
4553         return FALSE;
4554 }
4555
4556 static gboolean
4557 method_has_type_vars (MonoMethod *method)
4558 {
4559         if (has_type_vars (method->klass))
4560                 return TRUE;
4561
4562         if (method->is_inflated) {
4563                 MonoGenericContext *context = mono_method_get_context (method);
4564                 if (context->method_inst) {
4565                         int i;
4566
4567                         for (i = 0; i < context->method_inst->type_argc; ++i)
4568                                 if (has_type_vars (mono_class_from_mono_type (context->method_inst->type_argv [i])))
4569                                         return TRUE;
4570                 }
4571         }
4572         return FALSE;
4573 }
4574
4575 static
4576 gboolean mono_aot_mode_is_full (MonoAotOptions *opts)
4577 {
4578         return opts->mode == MONO_AOT_MODE_FULL;
4579 }
4580
4581 static
4582 gboolean mono_aot_mode_is_interp (MonoAotOptions *opts)
4583 {
4584         return opts->interp;
4585 }
4586
4587 static
4588 gboolean mono_aot_mode_is_hybrid (MonoAotOptions *opts)
4589 {
4590         return opts->mode == MONO_AOT_MODE_HYBRID;
4591 }
4592
4593 static void add_generic_class_with_depth (MonoAotCompile *acfg, MonoClass *klass, int depth, const char *ref);
4594
4595 static void
4596 add_generic_class (MonoAotCompile *acfg, MonoClass *klass, gboolean force, const char *ref)
4597 {
4598         /* This might lead to a huge code blowup so only do it if neccesary */
4599         if (!mono_aot_mode_is_full (&acfg->aot_opts) && !mono_aot_mode_is_hybrid (&acfg->aot_opts) && !force)
4600                 return;
4601
4602         add_generic_class_with_depth (acfg, klass, 0, ref);
4603 }
4604
4605 static gboolean
4606 check_type_depth (MonoType *t, int depth)
4607 {
4608         int i;
4609
4610         if (depth > 8)
4611                 return TRUE;
4612
4613         switch (t->type) {
4614         case MONO_TYPE_GENERICINST: {
4615                 MonoGenericClass *gklass = t->data.generic_class;
4616                 MonoGenericInst *ginst = gklass->context.class_inst;
4617
4618                 if (ginst) {
4619                         for (i = 0; i < ginst->type_argc; ++i) {
4620                                 if (check_type_depth (ginst->type_argv [i], depth + 1))
4621                                         return TRUE;
4622                         }
4623                 }
4624                 break;
4625         }
4626         default:
4627                 break;
4628         }
4629
4630         return FALSE;
4631 }
4632
4633 static void
4634 add_types_from_method_header (MonoAotCompile *acfg, MonoMethod *method);
4635
4636 /*
4637  * add_generic_class:
4638  *
4639  *   Add all methods of a generic class.
4640  */
4641 static void
4642 add_generic_class_with_depth (MonoAotCompile *acfg, MonoClass *klass, int depth, const char *ref)
4643 {
4644         MonoMethod *method;
4645         MonoClassField *field;
4646         gpointer iter;
4647         gboolean use_gsharedvt = FALSE;
4648
4649         if (!acfg->ginst_hash)
4650                 acfg->ginst_hash = g_hash_table_new (NULL, NULL);
4651
4652         mono_class_init (klass);
4653
4654         if (mono_class_is_ginst (klass) && mono_class_get_generic_class (klass)->context.class_inst->is_open)
4655                 return;
4656
4657         if (has_type_vars (klass))
4658                 return;
4659
4660         if (!mono_class_is_ginst (klass) && !m_class_get_rank (klass))
4661                 return;
4662
4663         if (mono_class_has_failure (klass))
4664                 return;
4665
4666         if (!acfg->ginst_hash)
4667                 acfg->ginst_hash = g_hash_table_new (NULL, NULL);
4668
4669         if (g_hash_table_lookup (acfg->ginst_hash, klass))
4670                 return;
4671
4672         if (check_type_depth (m_class_get_byval_arg (klass), 0))
4673                 return;
4674
4675         if (acfg->aot_opts.log_generics) {
4676                 char *s = mono_type_full_name (m_class_get_byval_arg (klass));
4677                 aot_printf (acfg, "%*sAdding generic instance %s [%s].\n", depth, "", s, ref);
4678                 g_free (s);
4679         }
4680
4681         g_hash_table_insert (acfg->ginst_hash, klass, klass);
4682
4683         /*
4684          * Use gsharedvt for generic collections with vtype arguments to avoid code blowup.
4685          * Enable this only for some classes since gsharedvt might not support all methods.
4686          */
4687         if ((acfg->opts & MONO_OPT_GSHAREDVT) && m_class_get_image (klass) == mono_defaults.corlib && mono_class_is_ginst (klass) && mono_class_get_generic_class (klass)->context.class_inst && is_vt_inst (mono_class_get_generic_class (klass)->context.class_inst) &&
4688                 (!strcmp (m_class_get_name (klass), "Dictionary`2") || !strcmp (m_class_get_name (klass), "List`1") || !strcmp (m_class_get_name (klass), "ReadOnlyCollection`1")))
4689                 use_gsharedvt = TRUE;
4690
4691         iter = NULL;
4692         while ((method = mono_class_get_methods (klass, &iter))) {
4693                 if ((acfg->opts & MONO_OPT_GSHAREDVT) && method->is_inflated && mono_method_get_context (method)->method_inst) {
4694                         /*
4695                          * This is partial sharing, and we can't handle it yet
4696                          */
4697                         continue;
4698                 }
4699
4700                 if (mono_method_is_generic_sharable_full (method, FALSE, FALSE, use_gsharedvt)) {
4701                         /* Already added */
4702                         add_types_from_method_header (acfg, method);
4703                         continue;
4704                 }
4705
4706                 if (method->is_generic)
4707                         /* FIXME: */
4708                         continue;
4709
4710                 /*
4711                  * FIXME: Instances which are referenced by these methods are not added,
4712                  * for example Array.Resize<int> for List<int>.Add ().
4713                  */
4714                 add_extra_method_with_depth (acfg, method, depth + 1);
4715         }
4716
4717         iter = NULL;
4718         while ((field = mono_class_get_fields (klass, &iter))) {
4719                 if (field->type->type == MONO_TYPE_GENERICINST)
4720                         add_generic_class_with_depth (acfg, mono_class_from_mono_type (field->type), depth + 1, "field");
4721         }
4722
4723         if (m_class_is_delegate (klass)) {
4724                 method = mono_get_delegate_invoke (klass);
4725
4726                 method = mono_marshal_get_delegate_invoke (method, NULL);
4727
4728                 if (acfg->aot_opts.log_generics)
4729                         aot_printf (acfg, "%*sAdding method %s.\n", depth, "", mono_method_get_full_name (method));
4730
4731                 add_method (acfg, method);
4732         }
4733
4734         /* Add superclasses */
4735         if (m_class_get_parent (klass))
4736                 add_generic_class_with_depth (acfg, m_class_get_parent (klass), depth, "parent");
4737
4738         const char *klass_name = m_class_get_name (klass);
4739         const char *klass_name_space = m_class_get_name_space (klass);
4740         const gboolean in_corlib = m_class_get_image (klass) == mono_defaults.corlib;
4741         /*
4742          * For ICollection<T>, add instances of the helper methods
4743          * in Array, since a T[] could be cast to ICollection<T>.
4744          */
4745         if (in_corlib && !strcmp (klass_name_space, "System.Collections.Generic") &&
4746                 (!strcmp(klass_name, "ICollection`1") || !strcmp (klass_name, "IEnumerable`1") || !strcmp (klass_name, "IList`1") || !strcmp (klass_name, "IEnumerator`1") || !strcmp (klass_name, "IReadOnlyList`1"))) {
4747                 MonoClass *tclass = mono_class_from_mono_type (mono_class_get_generic_class (klass)->context.class_inst->type_argv [0]);
4748                 MonoClass *array_class = mono_class_create_bounded_array (tclass, 1, FALSE);
4749                 gpointer iter;
4750                 char *name_prefix;
4751
4752                 if (!strcmp (klass_name, "IEnumerator`1"))
4753                         name_prefix = g_strdup_printf ("%s.%s", klass_name_space, "IEnumerable`1");
4754                 else
4755                         name_prefix = g_strdup_printf ("%s.%s", klass_name_space, klass_name);
4756
4757                 /* Add the T[]/InternalEnumerator class */
4758                 if (!strcmp (klass_name, "IEnumerable`1") || !strcmp (klass_name, "IEnumerator`1")) {
4759                         ERROR_DECL (error);
4760                         MonoClass *nclass;
4761
4762                         iter = NULL;
4763                         while ((nclass = mono_class_get_nested_types (m_class_get_parent (array_class), &iter))) {
4764                                 if (!strcmp (m_class_get_name (nclass), "InternalEnumerator`1"))
4765                                         break;
4766                         }
4767                         g_assert (nclass);
4768                         nclass = mono_class_inflate_generic_class_checked (nclass, mono_generic_class_get_context (mono_class_get_generic_class (klass)), error);
4769                         mono_error_assert_ok (error); /* FIXME don't swallow the error */
4770                         add_generic_class (acfg, nclass, FALSE, "ICollection<T>");
4771                 }
4772
4773                 iter = NULL;
4774                 while ((method = mono_class_get_methods (array_class, &iter))) {
4775                         if (strstr (method->name, name_prefix)) {
4776                                 MonoMethod *m = mono_aot_get_array_helper_from_wrapper (method);
4777
4778                                 add_extra_method_with_depth (acfg, m, depth);
4779                         }
4780                 }
4781
4782                 g_free (name_prefix);
4783         }
4784
4785         /* Add an instance of GenericComparer<T> which is created dynamically by Comparer<T> */
4786         if (in_corlib && !strcmp (klass_name_space, "System.Collections.Generic") && !strcmp (klass_name, "Comparer`1")) {
4787                 ERROR_DECL (error);
4788                 MonoClass *tclass = mono_class_from_mono_type (mono_class_get_generic_class (klass)->context.class_inst->type_argv [0]);
4789                 MonoClass *icomparable, *gcomparer, *icomparable_inst;
4790                 MonoGenericContext ctx;
4791                 MonoType *args [16];
4792
4793                 memset (&ctx, 0, sizeof (ctx));
4794
4795                 icomparable = mono_class_load_from_name (mono_defaults.corlib, "System", "IComparable`1");
4796
4797                 args [0] = m_class_get_byval_arg (tclass);
4798                 ctx.class_inst = mono_metadata_get_generic_inst (1, args);
4799
4800                 icomparable_inst = mono_class_inflate_generic_class_checked (icomparable, &ctx, error);
4801                 mono_error_assert_ok (error); /* FIXME don't swallow the error */
4802
4803                 if (mono_class_is_assignable_from (icomparable_inst, tclass)) {
4804                         MonoClass *gcomparer_inst;
4805                         gcomparer = mono_class_load_from_name (mono_defaults.corlib, "System.Collections.Generic", "GenericComparer`1");
4806                         gcomparer_inst = mono_class_inflate_generic_class_checked (gcomparer, &ctx, error);
4807                         mono_error_assert_ok (error); /* FIXME don't swallow the error */
4808
4809                         add_generic_class (acfg, gcomparer_inst, FALSE, "Comparer<T>");
4810                 }
4811         }
4812
4813         /* Add an instance of GenericEqualityComparer<T> which is created dynamically by EqualityComparer<T> */
4814         if (in_corlib && !strcmp (klass_name_space, "System.Collections.Generic") && !strcmp (klass_name, "EqualityComparer`1")) {
4815                 ERROR_DECL (error);
4816                 MonoClass *tclass = mono_class_from_mono_type (mono_class_get_generic_class (klass)->context.class_inst->type_argv [0]);
4817                 MonoClass *iface, *gcomparer, *iface_inst;
4818                 MonoGenericContext ctx;
4819                 MonoType *args [16];
4820
4821                 memset (&ctx, 0, sizeof (ctx));
4822
4823                 iface = mono_class_load_from_name (mono_defaults.corlib, "System", "IEquatable`1");
4824                 g_assert (iface);
4825                 args [0] = m_class_get_byval_arg (tclass);
4826                 ctx.class_inst = mono_metadata_get_generic_inst (1, args);
4827
4828                 iface_inst = mono_class_inflate_generic_class_checked (iface, &ctx, error);
4829                 mono_error_assert_ok (error); /* FIXME don't swallow the error */
4830
4831                 if (mono_class_is_assignable_from (iface_inst, tclass)) {
4832                         MonoClass *gcomparer_inst;
4833                         ERROR_DECL (error);
4834
4835                         gcomparer = mono_class_load_from_name (mono_defaults.corlib, "System.Collections.Generic", "GenericEqualityComparer`1");
4836                         gcomparer_inst = mono_class_inflate_generic_class_checked (gcomparer, &ctx, error);
4837                         mono_error_assert_ok (error); /* FIXME don't swallow the error */
4838                         add_generic_class (acfg, gcomparer_inst, FALSE, "EqualityComparer<T>");
4839                 }
4840         }
4841
4842         /* Add an instance of EnumComparer<T> which is created dynamically by EqualityComparer<T> for enums */
4843         if (in_corlib && !strcmp (klass_name_space, "System.Collections.Generic") && !strcmp (klass_name, "EqualityComparer`1")) {
4844                 MonoClass *enum_comparer;
4845                 MonoClass *tclass = mono_class_from_mono_type (mono_class_get_generic_class (klass)->context.class_inst->type_argv [0]);
4846                 MonoGenericContext ctx;
4847                 MonoType *args [16];
4848
4849                 if (mono_class_is_enum (tclass)) {
4850                         MonoClass *enum_comparer_inst;
4851                         ERROR_DECL (error);
4852
4853                         memset (&ctx, 0, sizeof (ctx));
4854                         args [0] = m_class_get_byval_arg (tclass);
4855                         ctx.class_inst = mono_metadata_get_generic_inst (1, args);
4856
4857                         enum_comparer = mono_class_load_from_name (mono_defaults.corlib, "System.Collections.Generic", "EnumEqualityComparer`1");
4858                         enum_comparer_inst = mono_class_inflate_generic_class_checked (enum_comparer, &ctx, error);
4859                         mono_error_assert_ok (error); /* FIXME don't swallow the error */
4860                         add_generic_class (acfg, enum_comparer_inst, FALSE, "EqualityComparer<T>");
4861                 }
4862         }
4863
4864         /* Add an instance of ObjectComparer<T> which is created dynamically by Comparer<T> for enums */
4865         if (in_corlib && !strcmp (klass_name_space, "System.Collections.Generic") && !strcmp (klass_name, "Comparer`1")) {
4866                 MonoClass *comparer;
4867                 MonoClass *tclass = mono_class_from_mono_type (mono_class_get_generic_class (klass)->context.class_inst->type_argv [0]);
4868                 MonoGenericContext ctx;
4869                 MonoType *args [16];
4870
4871                 if (mono_class_is_enum (tclass)) {
4872                         MonoClass *comparer_inst;
4873                         ERROR_DECL (error);
4874
4875                         memset (&ctx, 0, sizeof (ctx));
4876                         args [0] = m_class_get_byval_arg (tclass);
4877                         ctx.class_inst = mono_metadata_get_generic_inst (1, args);
4878
4879                         comparer = mono_class_load_from_name (mono_defaults.corlib, "System.Collections.Generic", "ObjectComparer`1");
4880                         comparer_inst = mono_class_inflate_generic_class_checked (comparer, &ctx, error);
4881                         mono_error_assert_ok (error); /* FIXME don't swallow the error */
4882                         add_generic_class (acfg, comparer_inst, FALSE, "Comparer<T>");
4883                 }
4884         }
4885 }
4886
4887 static void
4888 add_instances_of (MonoAotCompile *acfg, MonoClass *klass, MonoType **insts, int ninsts, gboolean force)
4889 {
4890         int i;
4891         MonoGenericContext ctx;
4892         MonoType *args [16];
4893
4894         if (acfg->aot_opts.no_instances)
4895                 return;
4896
4897         memset (&ctx, 0, sizeof (ctx));
4898
4899         for (i = 0; i < ninsts; ++i) {
4900                 ERROR_DECL (error);
4901                 MonoClass *generic_inst;
4902                 args [0] = insts [i];
4903                 ctx.class_inst = mono_metadata_get_generic_inst (1, args);
4904                 generic_inst = mono_class_inflate_generic_class_checked (klass, &ctx, error);
4905                 mono_error_assert_ok (error); /* FIXME don't swallow the error */
4906                 add_generic_class (acfg, generic_inst, force, "");
4907         }
4908 }
4909
4910 static void
4911 add_types_from_method_header (MonoAotCompile *acfg, MonoMethod *method)
4912 {
4913         ERROR_DECL (error);
4914         MonoMethodHeader *header;
4915         MonoMethodSignature *sig;
4916         int j, depth;
4917
4918         depth = GPOINTER_TO_UINT (g_hash_table_lookup (acfg->method_depth, method));
4919
4920         sig = mono_method_signature (method);
4921
4922         if (sig) {
4923                 for (j = 0; j < sig->param_count; ++j)
4924                         if (sig->params [j]->type == MONO_TYPE_GENERICINST)
4925                                 add_generic_class_with_depth (acfg, mono_class_from_mono_type (sig->params [j]), depth + 1, "arg");
4926         }
4927
4928         header = mono_method_get_header_checked (method, error);
4929
4930         if (header) {
4931                 for (j = 0; j < header->num_locals; ++j)
4932                         if (header->locals [j]->type == MONO_TYPE_GENERICINST)
4933                                 add_generic_class_with_depth (acfg, mono_class_from_mono_type (header->locals [j]), depth + 1, "local");
4934                 mono_metadata_free_mh (header);
4935         } else {
4936                 mono_error_cleanup (error); /* FIXME report the error */
4937         }
4938
4939 }
4940
4941 /*
4942  * add_generic_instances:
4943  *
4944  *   Add instances referenced by the METHODSPEC/TYPESPEC table.
4945  */
4946 static void
4947 add_generic_instances (MonoAotCompile *acfg)
4948 {
4949         int i;
4950         guint32 token;
4951         MonoMethod *method;
4952         MonoGenericContext *context;
4953
4954         if (acfg->aot_opts.no_instances)
4955                 return;
4956
4957         for (i = 0; i < acfg->image->tables [MONO_TABLE_METHODSPEC].rows; ++i) {
4958                 ERROR_DECL (error);
4959                 token = MONO_TOKEN_METHOD_SPEC | (i + 1);
4960                 method = mono_get_method_checked (acfg->image, token, NULL, NULL, error);
4961
4962                 if (!method) {
4963                         aot_printerrf (acfg, "Failed to load methodspec 0x%x due to %s.\n", token, mono_error_get_message (error));
4964                         aot_printerrf (acfg, "Run with MONO_LOG_LEVEL=debug for more information.\n");
4965                         mono_error_cleanup (error);
4966                         continue;
4967                 }
4968
4969                 if (m_class_get_image (method->klass) != acfg->image)
4970                         continue;
4971
4972                 context = mono_method_get_context (method);
4973
4974                 if (context && ((context->class_inst && context->class_inst->is_open)))
4975                         continue;
4976
4977                 /*
4978                  * For open methods, create an instantiation which can be passed to the JIT.
4979                  * FIXME: Handle class_inst as well.
4980                  */
4981                 if (context && context->method_inst && context->method_inst->is_open) {
4982                         ERROR_DECL (error);
4983                         MonoGenericContext shared_context;
4984                         MonoGenericInst *inst;
4985                         MonoType **type_argv;
4986                         int i;
4987                         MonoMethod *declaring_method;
4988                         gboolean supported = TRUE;
4989
4990                         /* Check that the context doesn't contain open constructed types */
4991                         if (context->class_inst) {
4992                                 inst = context->class_inst;
4993                                 for (i = 0; i < inst->type_argc; ++i) {
4994                                         if (MONO_TYPE_IS_REFERENCE (inst->type_argv [i]) || inst->type_argv [i]->type == MONO_TYPE_VAR || inst->type_argv [i]->type == MONO_TYPE_MVAR)
4995                                                 continue;
4996                                         if (mono_class_is_open_constructed_type (inst->type_argv [i]))
4997                                                 supported = FALSE;
4998                                 }
4999                         }
5000                         if (context->method_inst) {
5001                                 inst = context->method_inst;
5002                                 for (i = 0; i < inst->type_argc; ++i) {
5003                                         if (MONO_TYPE_IS_REFERENCE (inst->type_argv [i]) || inst->type_argv [i]->type == MONO_TYPE_VAR || inst->type_argv [i]->type == MONO_TYPE_MVAR)
5004                                                 continue;
5005                                         if (mono_class_is_open_constructed_type (inst->type_argv [i]))
5006                                                 supported = FALSE;
5007                                 }
5008                         }
5009
5010                         if (!supported)
5011                                 continue;
5012
5013                         memset (&shared_context, 0, sizeof (MonoGenericContext));
5014
5015                         inst = context->class_inst;
5016                         if (inst) {
5017                                 type_argv = g_new0 (MonoType*, inst->type_argc);
5018                                 for (i = 0; i < inst->type_argc; ++i) {
5019                                         if (MONO_TYPE_IS_REFERENCE (inst->type_argv [i]) || inst->type_argv [i]->type == MONO_TYPE_VAR || inst->type_argv [i]->type == MONO_TYPE_MVAR)
5020                                                 type_argv [i] = m_class_get_byval_arg (mono_defaults.object_class);
5021                                         else
5022                                                 type_argv [i] = inst->type_argv [i];
5023                                 }
5024
5025                                 shared_context.class_inst = mono_metadata_get_generic_inst (inst->type_argc, type_argv);
5026                                 g_free (type_argv);
5027                         }
5028
5029                         inst = context->method_inst;
5030                         if (inst) {
5031                                 type_argv = g_new0 (MonoType*, inst->type_argc);
5032                                 for (i = 0; i < inst->type_argc; ++i) {
5033                                         if (MONO_TYPE_IS_REFERENCE (inst->type_argv [i]) || inst->type_argv [i]->type == MONO_TYPE_VAR || inst->type_argv [i]->type == MONO_TYPE_MVAR)
5034                                                 type_argv [i] = m_class_get_byval_arg (mono_defaults.object_class);
5035                                         else
5036                                                 type_argv [i] = inst->type_argv [i];
5037                                 }
5038
5039                                 shared_context.method_inst = mono_metadata_get_generic_inst (inst->type_argc, type_argv);
5040                                 g_free (type_argv);
5041                         }
5042
5043                         if (method->is_generic || mono_class_is_gtd (method->klass))
5044                                 declaring_method = method;
5045                         else
5046                                 declaring_method = mono_method_get_declaring_generic_method (method);
5047
5048                         method = mono_class_inflate_generic_method_checked (declaring_method, &shared_context, error);
5049                         g_assert (mono_error_ok (error)); /* FIXME don't swallow the error */
5050                 }
5051
5052                 /*
5053                  * If the method is fully sharable, it was already added in place of its
5054                  * generic definition.
5055                  */
5056                 if (mono_method_is_generic_sharable_full (method, FALSE, FALSE, FALSE))
5057                         continue;
5058
5059                 /*
5060                  * FIXME: Partially shared methods are not shared here, so we end up with
5061                  * many identical methods.
5062                  */
5063                 add_extra_method (acfg, method);
5064         }
5065
5066         for (i = 0; i < acfg->image->tables [MONO_TABLE_TYPESPEC].rows; ++i) {
5067                 ERROR_DECL (error);
5068                 MonoClass *klass;
5069
5070                 token = MONO_TOKEN_TYPE_SPEC | (i + 1);
5071
5072                 klass = mono_class_get_checked (acfg->image, token, error);
5073                 if (!klass || m_class_get_rank (klass)) {
5074                         mono_error_cleanup (error);
5075                         continue;
5076                 }
5077
5078                 add_generic_class (acfg, klass, FALSE, "typespec");
5079         }
5080
5081         /* Add types of args/locals */
5082         for (i = 0; i < acfg->methods->len; ++i) {
5083                 method = (MonoMethod *)g_ptr_array_index (acfg->methods, i);
5084                 add_types_from_method_header (acfg, method);
5085         }
5086
5087         if (acfg->image == mono_defaults.corlib) {
5088                 MonoClass *klass;
5089                 MonoType *insts [256];
5090                 int ninsts = 0;
5091
5092                 MonoType *byte_type = m_class_get_byval_arg (mono_defaults.byte_class);
5093                 MonoType *sbyte_type = m_class_get_byval_arg (mono_defaults.sbyte_class);
5094                 MonoType *int16_type = m_class_get_byval_arg (mono_defaults.int16_class);
5095                 MonoType *uint16_type = m_class_get_byval_arg (mono_defaults.uint16_class);
5096                 MonoType *int32_type = m_class_get_byval_arg (mono_defaults.int32_class);
5097                 MonoType *uint32_type = m_class_get_byval_arg (mono_defaults.uint32_class);
5098                 MonoType *int64_type = m_class_get_byval_arg (mono_defaults.int64_class);
5099                 MonoType *uint64_type = m_class_get_byval_arg (mono_defaults.uint64_class);
5100                 MonoType *object_type = m_class_get_byval_arg (mono_defaults.object_class);
5101
5102                 insts [ninsts ++] = byte_type;
5103                 insts [ninsts ++] = sbyte_type;
5104                 insts [ninsts ++] = int16_type;
5105                 insts [ninsts ++] = uint16_type;
5106                 insts [ninsts ++] = int32_type;
5107                 insts [ninsts ++] = uint32_type;
5108                 insts [ninsts ++] = int64_type;
5109                 insts [ninsts ++] = uint64_type;
5110                 insts [ninsts ++] = m_class_get_byval_arg (mono_defaults.single_class);
5111                 insts [ninsts ++] = m_class_get_byval_arg (mono_defaults.double_class);
5112                 insts [ninsts ++] = m_class_get_byval_arg (mono_defaults.char_class);
5113                 insts [ninsts ++] = m_class_get_byval_arg (mono_defaults.boolean_class);
5114
5115                 /* Add GenericComparer<T> instances for primitive types for Enum.ToString () */
5116                 klass = mono_class_try_load_from_name (acfg->image, "System.Collections.Generic", "GenericComparer`1");
5117                 if (klass)
5118                         add_instances_of (acfg, klass, insts, ninsts, TRUE);
5119                 klass = mono_class_try_load_from_name (acfg->image, "System.Collections.Generic", "GenericEqualityComparer`1");
5120                 if (klass)
5121                         add_instances_of (acfg, klass, insts, ninsts, TRUE);
5122
5123                 /* Add instances of EnumEqualityComparer which are created by EqualityComparer<T> for enums */
5124                 {
5125                         MonoClass *enum_comparer;
5126                         MonoType *insts [16];
5127                         int ninsts;
5128
5129                         ninsts = 0;
5130                         insts [ninsts ++] = int32_type;
5131                         insts [ninsts ++] = uint32_type;
5132                         insts [ninsts ++] = uint16_type;
5133                         insts [ninsts ++] = byte_type;
5134                         enum_comparer = mono_class_load_from_name (mono_defaults.corlib, "System.Collections.Generic", "EnumEqualityComparer`1");
5135                         add_instances_of (acfg, enum_comparer, insts, ninsts, FALSE);
5136
5137                         ninsts = 0;
5138                         insts [ninsts ++] = int16_type;
5139                         enum_comparer = mono_class_load_from_name (mono_defaults.corlib, "System.Collections.Generic", "ShortEnumEqualityComparer`1");
5140                         add_instances_of (acfg, enum_comparer, insts, ninsts, FALSE);
5141
5142                         ninsts = 0;
5143                         insts [ninsts ++] = sbyte_type;
5144                         enum_comparer = mono_class_load_from_name (mono_defaults.corlib, "System.Collections.Generic", "SByteEnumEqualityComparer`1");
5145                         add_instances_of (acfg, enum_comparer, insts, ninsts, FALSE);
5146
5147                         enum_comparer = mono_class_load_from_name (mono_defaults.corlib, "System.Collections.Generic", "LongEnumEqualityComparer`1");
5148                         ninsts = 0;
5149                         insts [ninsts ++] = int64_type;
5150                         insts [ninsts ++] = uint64_type;
5151                         add_instances_of (acfg, enum_comparer, insts, ninsts, FALSE);
5152                 }
5153
5154                 /* Add instances of the array generic interfaces for primitive types */
5155                 /* This will add instances of the InternalArray_ helper methods in Array too */
5156                 klass = mono_class_try_load_from_name (acfg->image, "System.Collections.Generic", "ICollection`1");
5157                 if (klass)
5158                         add_instances_of (acfg, klass, insts, ninsts, TRUE);
5159
5160                 klass = mono_class_try_load_from_name (acfg->image, "System.Collections.Generic", "IList`1");
5161                 if (klass)
5162                         add_instances_of (acfg, klass, insts, ninsts, TRUE);
5163
5164                 klass = mono_class_try_load_from_name (acfg->image, "System.Collections.Generic", "IEnumerable`1");
5165                 if (klass)
5166                         add_instances_of (acfg, klass, insts, ninsts, TRUE);
5167
5168                 /*
5169                  * Add a managed-to-native wrapper of Array.GetGenericValueImpl<object>, which is
5170                  * used for all instances of GetGenericValueImpl by the AOT runtime.
5171                  */
5172                 {
5173                         MonoGenericContext ctx;
5174                         MonoType *args [16];
5175                         MonoMethod *get_method;
5176                         MonoClass *array_klass = m_class_get_parent (mono_class_create_array (mono_defaults.object_class, 1));
5177
5178                         get_method = mono_class_get_method_from_name (array_klass, "GetGenericValueImpl", 2);
5179
5180                         if (get_method) {
5181                                 ERROR_DECL (error);
5182                                 memset (&ctx, 0, sizeof (ctx));
5183                                 args [0] = object_type;
5184                                 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
5185                                 add_extra_method (acfg, mono_marshal_get_native_wrapper (mono_class_inflate_generic_method_checked (get_method, &ctx, error), TRUE, TRUE));
5186                                 g_assert (mono_error_ok (error)); /* FIXME don't swallow the error */
5187                         }
5188                 }
5189
5190                 /* Same for CompareExchange<T>/Exchange<T> */
5191                 {
5192                         MonoGenericContext ctx;
5193                         MonoType *args [16];
5194                         MonoMethod *m;
5195                         MonoClass *interlocked_klass = mono_class_load_from_name (mono_defaults.corlib, "System.Threading", "Interlocked");
5196                         gpointer iter = NULL;
5197
5198                         while ((m = mono_class_get_methods (interlocked_klass, &iter))) {
5199                                 if ((!strcmp (m->name, "CompareExchange") || !strcmp (m->name, "Exchange")) && m->is_generic) {
5200                                         ERROR_DECL (error);
5201                                         memset (&ctx, 0, sizeof (ctx));
5202                                         args [0] = object_type;
5203                                         ctx.method_inst = mono_metadata_get_generic_inst (1, args);
5204                                         add_extra_method (acfg, mono_marshal_get_native_wrapper (mono_class_inflate_generic_method_checked (m, &ctx, error), TRUE, TRUE));
5205                                         g_assert (mono_error_ok (error)); /* FIXME don't swallow the error */
5206                                 }
5207                         }
5208                 }
5209
5210                 /* Same for Volatile.Read/Write<T> */
5211                 {
5212                         MonoGenericContext ctx;
5213                         MonoType *args [16];
5214                         MonoMethod *m;
5215                         MonoClass *volatile_klass = mono_class_try_load_from_name (mono_defaults.corlib, "System.Threading", "Volatile");
5216                         gpointer iter = NULL;
5217
5218                         if (volatile_klass) {
5219                                 while ((m = mono_class_get_methods (volatile_klass, &iter))) {
5220                                         if ((!strcmp (m->name, "Read") || !strcmp (m->name, "Write")) && m->is_generic) {
5221                                                 ERROR_DECL (error);
5222                                                 memset (&ctx, 0, sizeof (ctx));
5223                                                 args [0] = object_type;
5224                                                 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
5225                                                 add_extra_method (acfg, mono_marshal_get_native_wrapper (mono_class_inflate_generic_method_checked (m, &ctx, error), TRUE, TRUE));
5226                                                 g_assert (mono_error_ok (error)); /* FIXME don't swallow the error */
5227                                         }
5228                                 }
5229                         }
5230                 }
5231
5232                 /* object[] accessor wrappers. */
5233                 for (i = 1; i < 4; ++i) {
5234                         MonoClass *obj_array_class = mono_class_create_array (mono_defaults.object_class, i);
5235                         MonoMethod *m;
5236
5237                         m = mono_class_get_method_from_name (obj_array_class, "Get", i);
5238                         g_assert (m);
5239
5240                         m = mono_marshal_get_array_accessor_wrapper (m);
5241                         add_extra_method (acfg, m);
5242
5243                         m = mono_class_get_method_from_name (obj_array_class, "Address", i);
5244                         g_assert (m);
5245
5246                         m = mono_marshal_get_array_accessor_wrapper (m);
5247                         add_extra_method (acfg, m);
5248
5249                         m = mono_class_get_method_from_name (obj_array_class, "Set", i + 1);
5250                         g_assert (m);
5251
5252                         m = mono_marshal_get_array_accessor_wrapper (m);
5253                         add_extra_method (acfg, m);
5254                 }
5255         }
5256 }
5257
5258 /*
5259  * is_direct_callable:
5260  *
5261  *   Return whenever the method identified by JI is directly callable without
5262  * going through the PLT.
5263  */
5264 static gboolean
5265 is_direct_callable (MonoAotCompile *acfg, MonoMethod *method, MonoJumpInfo *patch_info)
5266 {
5267         if ((patch_info->type == MONO_PATCH_INFO_METHOD) && (m_class_get_image (patch_info->data.method->klass) == acfg->image)) {
5268                 MonoCompile *callee_cfg = (MonoCompile *)g_hash_table_lookup (acfg->method_to_cfg, patch_info->data.method);
5269                 if (callee_cfg) {
5270                         gboolean direct_callable = TRUE;
5271
5272                         if (direct_callable && (acfg->aot_opts.dedup || acfg->aot_opts.dedup_include) && mono_aot_can_dedup (patch_info->data.method))
5273                                 direct_callable = FALSE;
5274
5275                         if (direct_callable && !(!callee_cfg->has_got_slots && mono_class_is_before_field_init (callee_cfg->method->klass)))
5276                                 direct_callable = FALSE;
5277                         if ((callee_cfg->method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) && (!method || method->wrapper_type != MONO_WRAPPER_SYNCHRONIZED))
5278                                 // FIXME: Maybe call the wrapper directly ?
5279                                 direct_callable = FALSE;
5280
5281                         if (acfg->aot_opts.soft_debug || acfg->aot_opts.no_direct_calls) {
5282                                 /* Disable this so all calls go through load_method (), see the
5283                                  * mini_get_debug_options ()->load_aot_jit_info_eagerly = TRUE; line in
5284                                  * mono_debugger_agent_init ().
5285                                  */
5286                                 direct_callable = FALSE;
5287                         }
5288
5289                         if (callee_cfg->method->wrapper_type == MONO_WRAPPER_ALLOC)
5290                                 /* sgen does some initialization when the allocator method is created */
5291                                 direct_callable = FALSE;
5292                         if (callee_cfg->method->wrapper_type == MONO_WRAPPER_WRITE_BARRIER)
5293                                 /* we don't know at compile time whether sgen is concurrent or not */
5294                                 direct_callable = FALSE;
5295
5296                         if (direct_callable)
5297                                 return TRUE;
5298                 }
5299         } else if ((patch_info->type == MONO_PATCH_INFO_ICALL_ADDR_CALL && patch_info->data.method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) {
5300                 if (acfg->aot_opts.direct_pinvoke)
5301                         return TRUE;
5302         } else if (patch_info->type == MONO_PATCH_INFO_ICALL_ADDR_CALL) {
5303                 if (acfg->aot_opts.direct_icalls)
5304                         return TRUE;
5305                 return FALSE;
5306         }
5307
5308         return FALSE;
5309 }
5310
5311 #ifdef MONO_ARCH_AOT_SUPPORTED
5312 static const char *
5313 get_pinvoke_import (MonoAotCompile *acfg, MonoMethod *method)
5314 {
5315         MonoImage *image = m_class_get_image (method->klass);
5316         MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *) method;
5317         MonoTableInfo *tables = image->tables;
5318         MonoTableInfo *im = &tables [MONO_TABLE_IMPLMAP];
5319         MonoTableInfo *mr = &tables [MONO_TABLE_MODULEREF];
5320         guint32 im_cols [MONO_IMPLMAP_SIZE];
5321         char *import;
5322
5323         import = (char *)g_hash_table_lookup (acfg->method_to_pinvoke_import, method);
5324         if (import != NULL)
5325                 return import;
5326
5327         if (!piinfo->implmap_idx || piinfo->implmap_idx > im->rows)
5328                 return NULL;
5329
5330         mono_metadata_decode_row (im, piinfo->implmap_idx - 1, im_cols, MONO_IMPLMAP_SIZE);
5331
5332         if (!im_cols [MONO_IMPLMAP_SCOPE] || im_cols [MONO_IMPLMAP_SCOPE] > mr->rows)
5333                 return NULL;
5334
5335         import = g_strdup_printf ("%s", mono_metadata_string_heap (image, im_cols [MONO_IMPLMAP_NAME]));
5336
5337         g_hash_table_insert (acfg->method_to_pinvoke_import, method, import);
5338
5339         return import;
5340 }
5341 #else
5342 static const char *
5343 get_pinvoke_import (MonoAotCompile *acfg, MonoMethod *method)
5344 {
5345         return NULL;
5346 }
5347 #endif
5348
5349 static gint
5350 compare_lne (MonoDebugLineNumberEntry *a, MonoDebugLineNumberEntry *b)
5351 {
5352         if (a->native_offset == b->native_offset)
5353                 return a->il_offset - b->il_offset;
5354         else
5355                 return a->native_offset - b->native_offset;
5356 }
5357
5358 /*
5359  * compute_line_numbers:
5360  *
5361  * Returns a sparse array of size CODE_SIZE containing MonoDebugSourceLocation* entries for the native offsets which have a corresponding line number
5362  * entry.
5363  */
5364 static MonoDebugSourceLocation**
5365 compute_line_numbers (MonoMethod *method, int code_size, MonoDebugMethodJitInfo *debug_info)
5366 {
5367         MonoDebugMethodInfo *minfo;
5368         MonoDebugLineNumberEntry *ln_array;
5369         MonoDebugSourceLocation *loc;
5370         int i, prev_line, prev_il_offset;
5371         int *native_to_il_offset = NULL;
5372         MonoDebugSourceLocation **res;
5373         gboolean first;
5374
5375         minfo = mono_debug_lookup_method (method);
5376         if (!minfo)
5377                 return NULL;
5378         // FIXME: This seems to happen when two methods have the same cfg->method_to_register
5379         if (debug_info->code_size != code_size)
5380                 return NULL;
5381
5382         g_assert (code_size);
5383
5384         /* Compute the native->IL offset mapping */
5385
5386         ln_array = g_new0 (MonoDebugLineNumberEntry, debug_info->num_line_numbers);
5387         memcpy (ln_array, debug_info->line_numbers, debug_info->num_line_numbers * sizeof (MonoDebugLineNumberEntry));
5388
5389         qsort (ln_array, debug_info->num_line_numbers, sizeof (MonoDebugLineNumberEntry), (int (*)(const void *, const void *))compare_lne);
5390
5391         native_to_il_offset = g_new0 (int, code_size + 1);
5392
5393         for (i = 0; i < debug_info->num_line_numbers; ++i) {
5394                 int j;
5395                 MonoDebugLineNumberEntry *lne = &ln_array [i];
5396
5397                 if (i == 0) {
5398                         for (j = 0; j < lne->native_offset; ++j)
5399                                 native_to_il_offset [j] = -1;
5400                 }
5401
5402                 if (i < debug_info->num_line_numbers - 1) {
5403                         MonoDebugLineNumberEntry *lne_next = &ln_array [i + 1];
5404
5405                         for (j = lne->native_offset; j < lne_next->native_offset; ++j)
5406                                 native_to_il_offset [j] = lne->il_offset;
5407                 } else {
5408                         for (j = lne->native_offset; j < code_size; ++j)
5409                                 native_to_il_offset [j] = lne->il_offset;
5410                 }
5411         }
5412         g_free (ln_array);
5413
5414         /* Compute the native->line number mapping */
5415         res = g_new0 (MonoDebugSourceLocation*, code_size);
5416         prev_il_offset = -1;
5417         prev_line = -1;
5418         first = TRUE;
5419         for (i = 0; i < code_size; ++i) {
5420                 int il_offset = native_to_il_offset [i];
5421
5422                 if (il_offset == -1 || il_offset == prev_il_offset)
5423                         continue;
5424                 prev_il_offset = il_offset;
5425                 loc = mono_debug_method_lookup_location (minfo, il_offset);
5426                 if (!(loc && loc->source_file))
5427                         continue;
5428                 if (loc->row == prev_line) {
5429                         mono_debug_free_source_location (loc);
5430                         continue;
5431                 }
5432                 prev_line = loc->row;
5433                 //printf ("D: %s:%d il=%x native=%x\n", loc->source_file, loc->row, il_offset, i);
5434                 if (first)
5435                         /* This will cover the prolog too */
5436                         res [0] = loc;
5437                 else
5438                         res [i] = loc;
5439                 first = FALSE;
5440         }
5441         return res;
5442 }
5443
5444 static int
5445 get_file_index (MonoAotCompile *acfg, const char *source_file)
5446 {
5447         int findex;
5448
5449         // FIXME: Free these
5450         if (!acfg->dwarf_ln_filenames)
5451                 acfg->dwarf_ln_filenames = g_hash_table_new (g_str_hash, g_str_equal);
5452         findex = GPOINTER_TO_INT (g_hash_table_lookup (acfg->dwarf_ln_filenames, source_file));
5453         if (!findex) {
5454                 findex = g_hash_table_size (acfg->dwarf_ln_filenames) + 1;
5455                 g_hash_table_insert (acfg->dwarf_ln_filenames, g_strdup (source_file), GINT_TO_POINTER (findex));
5456                 emit_unset_mode (acfg);
5457                 fprintf (acfg->fp, ".file %d \"%s\"\n", findex, mono_dwarf_escape_path (source_file));
5458         }
5459         return findex;
5460 }
5461
5462 #ifdef TARGET_ARM64
5463 #define INST_LEN 4
5464 #else
5465 #define INST_LEN 1
5466 #endif
5467
5468 /*
5469  * emit_and_reloc_code:
5470  *
5471  *   Emit the native code in CODE, handling relocations along the way. If GOT_ONLY
5472  * is true, calls are made through the GOT too. This is used for emitting trampolines
5473  * in full-aot mode, since calls made from trampolines couldn't go through the PLT,
5474  * since trampolines are needed to make PTL work.
5475  */
5476 static void
5477 emit_and_reloc_code (MonoAotCompile *acfg, MonoMethod *method, guint8 *code, guint32 code_len, MonoJumpInfo *relocs, gboolean got_only, MonoDebugMethodJitInfo *debug_info)
5478 {
5479         int i, pindex, start_index;
5480         GPtrArray *patches;
5481         MonoJumpInfo *patch_info;
5482         MonoDebugSourceLocation **locs = NULL;
5483         gboolean skip, prologue_end = FALSE;
5484 #ifdef MONO_ARCH_AOT_SUPPORTED
5485         gboolean direct_call, external_call;
5486         guint32 got_slot;
5487         const char *direct_call_target = 0;
5488         const char *direct_pinvoke;
5489 #endif
5490
5491         if (acfg->gas_line_numbers && method && debug_info) {
5492                 locs = compute_line_numbers (method, code_len, debug_info);
5493                 if (!locs) {
5494                         int findex = get_file_index (acfg, "<unknown>");
5495                         emit_unset_mode (acfg);
5496                         fprintf (acfg->fp, ".loc %d %d 0\n", findex, 1);
5497                 }
5498         }
5499
5500         /* Collect and sort relocations */
5501         patches = g_ptr_array_new ();
5502         for (patch_info = relocs; patch_info; patch_info = patch_info->next)
5503                 g_ptr_array_add (patches, patch_info);
5504         g_ptr_array_sort (patches, compare_patches);
5505
5506         start_index = 0;
5507         for (i = 0; i < code_len; i += INST_LEN) {
5508                 patch_info = NULL;
5509                 for (pindex = start_index; pindex < patches->len; ++pindex) {
5510                         patch_info = (MonoJumpInfo *)g_ptr_array_index (patches, pindex);
5511                         if (patch_info->ip.i >= i)
5512                                 break;
5513                 }
5514
5515                 if (locs && locs [i]) {
5516                         MonoDebugSourceLocation *loc = locs [i];
5517                         int findex;
5518                         const char *options;
5519
5520                         findex = get_file_index (acfg, loc->source_file);
5521                         emit_unset_mode (acfg);
5522                         if (!prologue_end)
5523                                 options = " prologue_end";
5524                         else
5525                                 options = "";
5526                         prologue_end = TRUE;
5527                         fprintf (acfg->fp, ".loc %d %d 0%s\n", findex, loc->row, options);
5528                         mono_debug_free_source_location (loc);
5529                 }
5530
5531                 skip = FALSE;
5532 #ifdef MONO_ARCH_AOT_SUPPORTED
5533                 if (patch_info && (patch_info->ip.i == i) && (pindex < patches->len)) {
5534                         start_index = pindex;
5535
5536                         switch (patch_info->type) {
5537                         case MONO_PATCH_INFO_NONE:
5538                                 break;
5539                         case MONO_PATCH_INFO_GOT_OFFSET: {
5540                                 int code_size;
5541
5542                                 arch_emit_got_offset (acfg, code + i, &code_size);
5543                                 i += code_size - INST_LEN;
5544                                 skip = TRUE;
5545                                 patch_info->type = MONO_PATCH_INFO_NONE;
5546                                 break;
5547                         }
5548                         case MONO_PATCH_INFO_OBJC_SELECTOR_REF: {
5549                                 int code_size, index;
5550                                 char *selector = (char *)patch_info->data.target;
5551
5552                                 if (!acfg->objc_selector_to_index)
5553                                         acfg->objc_selector_to_index = g_hash_table_new (g_str_hash, g_str_equal);
5554                                 if (!acfg->objc_selectors)
5555                                         acfg->objc_selectors = g_ptr_array_new ();
5556                                 index = GPOINTER_TO_UINT (g_hash_table_lookup (acfg->objc_selector_to_index, selector));
5557                                 if (index)
5558                                         index --;
5559                                 else {
5560                                         index = acfg->objc_selector_index;
5561                                         g_ptr_array_add (acfg->objc_selectors, (void*)patch_info->data.target);
5562                                         g_hash_table_insert (acfg->objc_selector_to_index, selector, GUINT_TO_POINTER (index + 1));
5563                                         acfg->objc_selector_index ++;
5564                                 }
5565
5566                                 arch_emit_objc_selector_ref (acfg, code + i, index, &code_size);
5567                                 i += code_size - INST_LEN;
5568                                 skip = TRUE;
5569                                 patch_info->type = MONO_PATCH_INFO_NONE;
5570                                 break;
5571                         }
5572                         default: {
5573                                 /*
5574                                  * If this patch is a call, try emitting a direct call instead of
5575                                  * through a PLT entry. This is possible if the called method is in
5576                                  * the same assembly and requires no initialization.
5577                                  */
5578                                 direct_call = FALSE;
5579                                 external_call = FALSE;
5580                                 if ((patch_info->type == MONO_PATCH_INFO_METHOD) && (m_class_get_image (patch_info->data.method->klass) == acfg->image)) {
5581                                         if (!got_only && is_direct_callable (acfg, method, patch_info)) {
5582                                                 MonoCompile *callee_cfg = (MonoCompile *)g_hash_table_lookup (acfg->method_to_cfg, patch_info->data.method);
5583
5584                                                 // Don't compile inflated methods if we're doing dedup
5585                                                 if (acfg->aot_opts.dedup && !mono_aot_can_dedup (patch_info->data.method)) {
5586                                                         char *name = mono_aot_get_mangled_method_name (patch_info->data.method);
5587                                                         mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "DIRECT CALL: %s by %s", name, method ? mono_method_full_name (method, TRUE) : "");
5588                                                         g_free (name);
5589
5590                                                         direct_call = TRUE;
5591                                                         direct_call_target = callee_cfg->asm_symbol;
5592                                                         patch_info->type = MONO_PATCH_INFO_NONE;
5593                                                         acfg->stats.direct_calls ++;
5594                                                 }
5595                                         }
5596
5597                                         acfg->stats.all_calls ++;
5598                                 } else if (patch_info->type == MONO_PATCH_INFO_ICALL_ADDR_CALL) {
5599                                         if (!got_only && is_direct_callable (acfg, method, patch_info)) {
5600                                                 if (!(patch_info->data.method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL))
5601                                                         direct_pinvoke = mono_lookup_icall_symbol (patch_info->data.method);
5602                                                 else
5603                                                         direct_pinvoke = get_pinvoke_import (acfg, patch_info->data.method);
5604                                                 if (direct_pinvoke) {
5605                                                         direct_call = TRUE;
5606                                                         g_assert (strlen (direct_pinvoke) < 1000);
5607                                                         direct_call_target = g_strdup_printf ("%s%s", acfg->user_symbol_prefix, direct_pinvoke);
5608                                                 }
5609                                         }
5610                                 } else if (patch_info->type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
5611                                         const char *sym = mono_lookup_jit_icall_symbol (patch_info->data.name);
5612                                         if (!got_only && sym && acfg->aot_opts.direct_icalls) {
5613                                                 /* Call to a C function implementing a jit icall */
5614                                                 direct_call = TRUE;
5615                                                 external_call = TRUE;
5616                                                 g_assert (strlen (sym) < 1000);
5617                                                 direct_call_target = g_strdup_printf ("%s%s", acfg->user_symbol_prefix, sym);
5618                                         }
5619                                 } else if (patch_info->type == MONO_PATCH_INFO_INTERNAL_METHOD) {
5620                                         MonoJitICallInfo *info = mono_find_jit_icall_by_name (patch_info->data.name);
5621                                         const char *sym = mono_lookup_jit_icall_symbol (patch_info->data.name);
5622                                         if (!got_only && sym && acfg->aot_opts.direct_icalls && info->func == info->wrapper) {
5623                                                 /* Call to a jit icall without a wrapper */
5624                                                 direct_call = TRUE;
5625                                                 external_call = TRUE;
5626                                                 g_assert (strlen (sym) < 1000);
5627                                                 direct_call_target = g_strdup_printf ("%s%s", acfg->user_symbol_prefix, sym);
5628                                         }
5629                                 }
5630
5631                                 if (direct_call) {
5632                                         patch_info->type = MONO_PATCH_INFO_NONE;
5633                                         acfg->stats.direct_calls ++;
5634                                 }
5635
5636                                 if (!got_only && !direct_call) {
5637                                         MonoPltEntry *plt_entry = get_plt_entry (acfg, patch_info);
5638                                         if (plt_entry) {
5639                                                 /* This patch has a PLT entry, so we must emit a call to the PLT entry */
5640                                                 direct_call = TRUE;
5641                                                 direct_call_target = plt_entry->symbol;
5642
5643                                                 /* Nullify the patch */
5644                                                 patch_info->type = MONO_PATCH_INFO_NONE;
5645                                                 plt_entry->jit_used = TRUE;
5646                                         }
5647                                 }
5648
5649                                 if (direct_call) {
5650                                         int call_size;
5651
5652                                         arch_emit_direct_call (acfg, direct_call_target, external_call, FALSE, patch_info, &call_size);
5653                                         i += call_size - INST_LEN;
5654                                 } else {
5655                                         int code_size;
5656
5657                                         got_slot = get_got_offset (acfg, FALSE, patch_info);
5658
5659                                         arch_emit_got_access (acfg, acfg->got_symbol, code + i, got_slot, &code_size);
5660                                         i += code_size - INST_LEN;
5661                                 }
5662                                 skip = TRUE;
5663                         }
5664                         }
5665                 }
5666 #endif /* MONO_ARCH_AOT_SUPPORTED */
5667
5668                 if (!skip) {
5669                         /* Find next patch */
5670                         patch_info = NULL;
5671                         for (pindex = start_index; pindex < patches->len; ++pindex) {
5672                                 patch_info = (MonoJumpInfo *)g_ptr_array_index (patches, pindex);
5673                                 if (patch_info->ip.i >= i)
5674                                         break;
5675                         }
5676
5677                         /* Try to emit multiple bytes at once */
5678                         if (pindex < patches->len && patch_info->ip.i > i) {
5679                                 int limit;
5680
5681                                 for (limit = i + INST_LEN; limit < patch_info->ip.i; limit += INST_LEN) {
5682                                         if (locs && locs [limit])
5683                                                 break;
5684                                 }
5685
5686                                 emit_code_bytes (acfg, code + i, limit - i);
5687                                 i = limit - INST_LEN;
5688                         } else {
5689                                 emit_code_bytes (acfg, code + i, INST_LEN);
5690                         }
5691                 }
5692         }
5693
5694         g_ptr_array_free (patches, TRUE);
5695         g_free (locs);
5696 }
5697
5698 /*
5699  * sanitize_symbol:
5700  *
5701  *   Return a modified version of S which only includes characters permissible in symbols.
5702  */
5703 static char*
5704 sanitize_symbol (MonoAotCompile *acfg, char *s)
5705 {
5706         gboolean process = FALSE;
5707         int i, len;
5708         GString *gs;
5709         char *res;
5710
5711         if (!s)
5712                 return s;
5713
5714         len = strlen (s);
5715         for (i = 0; i < len; ++i)
5716                 if (!(s [i] <= 0x7f && (isalnum (s [i]) || s [i] == '_')))
5717                         process = TRUE;
5718         if (!process)
5719                 return s;
5720
5721         gs = g_string_sized_new (len);
5722         for (i = 0; i < len; ++i) {
5723                 guint8 c = s [i];
5724                 if (c <= 0x7f && (isalnum (c) || c == '_')) {
5725                         g_string_append_c (gs, c);
5726                 } else if (c > 0x7f) {
5727                         /* multi-byte utf8 */
5728                         g_string_append_printf (gs, "_0x%x", c);
5729                         i ++;
5730                         c = s [i];
5731                         while (c >> 6 == 0x2) {
5732                                 g_string_append_printf (gs, "%x", c);
5733                                 i ++;
5734                                 c = s [i];
5735                         }
5736                         g_string_append_printf (gs, "_");
5737                         i --;
5738                 } else {
5739                         g_string_append_c (gs, '_');
5740                 }
5741         }
5742
5743         res = mono_mempool_strdup (acfg->mempool, gs->str);
5744         g_string_free (gs, TRUE);
5745         return res;
5746 }
5747
5748 static char*
5749 get_debug_sym (MonoMethod *method, const char *prefix, GHashTable *cache)
5750 {
5751         char *name1, *name2, *cached;
5752         int i, j, len, count;
5753         MonoMethod *cached_method;
5754
5755         name1 = mono_method_full_name (method, TRUE);
5756
5757 #ifdef TARGET_MACH
5758         // This is so that we don't accidentally create a local symbol (which starts with 'L')
5759         if ((!prefix || !*prefix) && name1 [0] == 'L')
5760                 prefix = "_";
5761 #endif
5762
5763 #if defined(TARGET_WIN32) && defined(TARGET_X86)
5764         char adjustedPrefix [MAX_SYMBOL_SIZE];
5765         prefix = mangle_symbol (prefix, adjustedPrefix, G_N_ELEMENTS (adjustedPrefix));
5766 #endif
5767
5768         len = strlen (name1);
5769         name2 = (char *)malloc (strlen (prefix) + len + 16);
5770         memcpy (name2, prefix, strlen (prefix));
5771         j = strlen (prefix);
5772         for (i = 0; i < len; ++i) {
5773                 if (i == 0 && name1 [0] >= '0' && name1 [0] <= '9') {
5774                         name2 [j ++] = '_';
5775                 } else if (isalnum (name1 [i])) {
5776                         name2 [j ++] = name1 [i];
5777                 } else if (name1 [i] == ' ' && name1 [i + 1] == '(' && name1 [i + 2] == ')') {
5778                         i += 2;
5779                 } else if (name1 [i] == ',' && name1 [i + 1] == ' ') {
5780                         name2 [j ++] = '_';
5781                         i++;
5782                 } else if (name1 [i] == '(' || name1 [i] == ')' || name1 [i] == '>') {
5783                 } else
5784                         name2 [j ++] = '_';
5785         }
5786         name2 [j] = '\0';
5787
5788         g_free (name1);
5789
5790         count = 0;
5791         while (TRUE) {
5792                 cached_method = (MonoMethod *)g_hash_table_lookup (cache, name2);
5793                 if (!(cached_method && cached_method != method))
5794                         break;
5795                 sprintf (name2 + j, "_%d", count);
5796                 count ++;
5797         }
5798
5799         cached = g_strdup (name2);
5800         g_hash_table_insert (cache, cached, method);
5801
5802         return name2;
5803 }
5804
5805 static void
5806 emit_method_code (MonoAotCompile *acfg, MonoCompile *cfg)
5807 {
5808         MonoMethod *method;
5809         int method_index;
5810         guint8 *code;
5811         char *debug_sym = NULL;
5812         char *symbol = NULL;
5813         int func_alignment = AOT_FUNC_ALIGNMENT;
5814         char *export_name;
5815
5816         g_assert (!ignore_cfg (cfg));
5817
5818         method = cfg->orig_method;
5819         code = cfg->native_code;
5820
5821         method_index = get_method_index (acfg, method);
5822         symbol = g_strdup_printf ("%sme_%x", acfg->temp_prefix, method_index);
5823
5824         /* Make the labels local */
5825         emit_section_change (acfg, ".text", 0);
5826         emit_alignment_code (acfg, func_alignment);
5827
5828         if (acfg->global_symbols && acfg->need_no_dead_strip)
5829                 fprintf (acfg->fp, "    .no_dead_strip %s\n", cfg->asm_symbol);
5830
5831         emit_label (acfg, cfg->asm_symbol);
5832
5833         if (acfg->aot_opts.write_symbols && !acfg->global_symbols && !acfg->llvm) {
5834                 /*
5835                  * Write a C style symbol for every method, this has two uses:
5836                  * - it works on platforms where the dwarf debugging info is not
5837                  *   yet supported.
5838                  * - it allows the setting of breakpoints of aot-ed methods.
5839                  */
5840
5841                 // Comment out to force dedup to link these symbols and forbid compiling
5842                 // in duplicated code. This is an "assert when linking if broken" trick.
5843                 /*if (mono_aot_can_dedup (method) && (acfg->aot_opts.dedup || acfg->aot_opts.dedup_include))*/
5844                         /*debug_sym = mono_aot_get_mangled_method_name (method);*/
5845                 /*else*/
5846                         debug_sym = get_debug_sym (method, "", acfg->method_label_hash);
5847
5848                 cfg->asm_debug_symbol = g_strdup (debug_sym);
5849
5850                 if (acfg->need_no_dead_strip)
5851                         fprintf (acfg->fp, "    .no_dead_strip %s\n", debug_sym);
5852
5853                 // Comment out to force dedup to link these symbols and forbid compiling
5854                 // in duplicated code. This is an "assert when linking if broken" trick.
5855                 /*if (mono_aot_can_dedup (method) && (acfg->aot_opts.dedup || acfg->aot_opts.dedup_include))*/
5856                         /*emit_global_inner (acfg, debug_sym, TRUE);*/
5857                 /*else*/
5858                         emit_local_symbol (acfg, debug_sym, symbol, TRUE);
5859
5860                 emit_label (acfg, debug_sym);
5861         }
5862
5863         export_name = (char *)g_hash_table_lookup (acfg->export_names, method);
5864         if (export_name) {
5865                 /* Emit a global symbol for the method */
5866                 emit_global_inner (acfg, export_name, TRUE);
5867                 emit_label (acfg, export_name);
5868         }
5869
5870         if (cfg->verbose_level > 0 && !ignore_cfg (cfg))
5871                 g_print ("Method %s emitted as %s\n", mono_method_get_full_name (method), cfg->asm_symbol);
5872
5873         acfg->stats.code_size += cfg->code_len;
5874
5875         acfg->cfgs [method_index]->got_offset = acfg->got_offset;
5876
5877         emit_and_reloc_code (acfg, method, code, cfg->code_len, cfg->patch_info, FALSE, mono_debug_find_method (cfg->jit_info->d.method, mono_domain_get ()));
5878
5879         emit_line (acfg);
5880
5881         if (acfg->aot_opts.write_symbols) {
5882                 if (debug_sym)
5883                         emit_symbol_size (acfg, debug_sym, ".");
5884                 else
5885                         emit_symbol_size (acfg, cfg->asm_symbol, ".");
5886                 g_free (debug_sym);
5887         }
5888
5889         emit_label (acfg, symbol);
5890
5891         arch_emit_unwind_info_sections (acfg, cfg->asm_symbol, symbol, cfg->unwind_ops);
5892
5893         g_free (symbol);
5894 }
5895
5896 /**
5897  * encode_patch:
5898  *
5899  *  Encode PATCH_INFO into its disk representation.
5900  */
5901 static void
5902 encode_patch (MonoAotCompile *acfg, MonoJumpInfo *patch_info, guint8 *buf, guint8 **endbuf)
5903 {
5904         guint8 *p = buf;
5905
5906         switch (patch_info->type) {
5907         case MONO_PATCH_INFO_NONE:
5908                 break;
5909         case MONO_PATCH_INFO_IMAGE:
5910                 encode_value (get_image_index (acfg, patch_info->data.image), p, &p);
5911                 break;
5912         case MONO_PATCH_INFO_MSCORLIB_GOT_ADDR:
5913         case MONO_PATCH_INFO_GC_CARD_TABLE_ADDR:
5914         case MONO_PATCH_INFO_GC_NURSERY_START:
5915         case MONO_PATCH_INFO_GC_NURSERY_BITS:
5916                 break;
5917         case MONO_PATCH_INFO_CASTCLASS_CACHE:
5918                 encode_value (patch_info->data.index, p, &p);
5919                 break;
5920         case MONO_PATCH_INFO_METHOD_REL:
5921                 encode_value ((gint)patch_info->data.offset, p, &p);
5922                 break;
5923         case MONO_PATCH_INFO_SWITCH: {
5924                 gpointer *table = (gpointer *)patch_info->data.table->table;
5925                 int k;
5926
5927                 encode_value (patch_info->data.table->table_size, p, &p);
5928                 for (k = 0; k < patch_info->data.table->table_size; k++)
5929                         encode_value ((int)(gssize)table [k], p, &p);
5930                 break;
5931         }
5932         case MONO_PATCH_INFO_METHODCONST:
5933         case MONO_PATCH_INFO_METHOD:
5934         case MONO_PATCH_INFO_METHOD_JUMP:
5935         case MONO_PATCH_INFO_ICALL_ADDR:
5936         case MONO_PATCH_INFO_ICALL_ADDR_CALL:
5937         case MONO_PATCH_INFO_METHOD_RGCTX:
5938         case MONO_PATCH_INFO_METHOD_CODE_SLOT:
5939                 encode_method_ref (acfg, patch_info->data.method, p, &p);
5940                 break;
5941         case MONO_PATCH_INFO_AOT_JIT_INFO:
5942         case MONO_PATCH_INFO_GET_TLS_TRAMP:
5943         case MONO_PATCH_INFO_SET_TLS_TRAMP:
5944                 encode_value (patch_info->data.index, p, &p);
5945                 break;
5946         case MONO_PATCH_INFO_INTERNAL_METHOD:
5947         case MONO_PATCH_INFO_JIT_ICALL_ADDR:
5948         case MONO_PATCH_INFO_JIT_ICALL_ADDR_NOCALL: {
5949                 guint32 len = strlen (patch_info->data.name);
5950
5951                 encode_value (len, p, &p);
5952
5953                 memcpy (p, patch_info->data.name, len);
5954                 p += len;
5955                 *p++ = '\0';
5956                 break;
5957         }
5958         case MONO_PATCH_INFO_LDSTR: {
5959                 guint32 image_index = get_image_index (acfg, patch_info->data.token->image);
5960                 guint32 token = patch_info->data.token->token;
5961                 g_assert (mono_metadata_token_code (token) == MONO_TOKEN_STRING);
5962                 encode_value (image_index, p, &p);
5963                 encode_value (patch_info->data.token->token - MONO_TOKEN_STRING, p, &p);
5964                 break;
5965         }
5966         case MONO_PATCH_INFO_RVA:
5967         case MONO_PATCH_INFO_DECLSEC:
5968         case MONO_PATCH_INFO_LDTOKEN:
5969         case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
5970                 encode_value (get_image_index (acfg, patch_info->data.token->image), p, &p);
5971                 encode_value (patch_info->data.token->token, p, &p);
5972                 encode_value (patch_info->data.token->has_context, p, &p);
5973                 if (patch_info->data.token->has_context)
5974                         encode_generic_context (acfg, &patch_info->data.token->context, p, &p);
5975                 break;
5976         case MONO_PATCH_INFO_EXC_NAME: {
5977                 MonoClass *ex_class;
5978
5979                 ex_class =
5980                         mono_class_load_from_name (m_class_get_image (mono_defaults.exception_class),
5981                                                                   "System", (const char *)patch_info->data.target);
5982                 encode_klass_ref (acfg, ex_class, p, &p);
5983                 break;
5984         }
5985         case MONO_PATCH_INFO_R4:
5986                 encode_value (*((guint32 *)patch_info->data.target), p, &p);
5987                 break;
5988         case MONO_PATCH_INFO_R8:
5989                 encode_value (((guint32 *)patch_info->data.target) [MINI_LS_WORD_IDX], p, &p);
5990                 encode_value (((guint32 *)patch_info->data.target) [MINI_MS_WORD_IDX], p, &p);
5991                 break;
5992         case MONO_PATCH_INFO_VTABLE:
5993         case MONO_PATCH_INFO_CLASS:
5994         case MONO_PATCH_INFO_IID:
5995         case MONO_PATCH_INFO_ADJUSTED_IID:
5996                 encode_klass_ref (acfg, patch_info->data.klass, p, &p);
5997                 break;
5998         case MONO_PATCH_INFO_DELEGATE_TRAMPOLINE:
5999                 encode_klass_ref (acfg, patch_info->data.del_tramp->klass, p, &p);
6000                 if (patch_info->data.del_tramp->method) {
6001                         encode_value (1, p, &p);
6002                         encode_method_ref (acfg, patch_info->data.del_tramp->method, p, &p);
6003                 } else {
6004                         encode_value (0, p, &p);
6005                 }
6006                 encode_value (patch_info->data.del_tramp->is_virtual, p, &p);
6007                 break;
6008         case MONO_PATCH_INFO_FIELD:
6009         case MONO_PATCH_INFO_SFLDA:
6010                 encode_field_info (acfg, patch_info->data.field, p, &p);
6011                 break;
6012         case MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG:
6013                 break;
6014         case MONO_PATCH_INFO_PROFILER_ALLOCATION_COUNT:
6015         case MONO_PATCH_INFO_PROFILER_CLAUSE_COUNT:
6016                 break;
6017         case MONO_PATCH_INFO_RGCTX_FETCH:
6018         case MONO_PATCH_INFO_RGCTX_SLOT_INDEX: {
6019                 MonoJumpInfoRgctxEntry *entry = patch_info->data.rgctx_entry;
6020                 guint32 offset;
6021                 guint8 *buf2, *p2;
6022
6023                 /*
6024                  * entry->method has a lenghtly encoding and multiple rgctx_fetch entries
6025                  * reference the same method, so encode the method only once.
6026                  */
6027                 offset = GPOINTER_TO_UINT (g_hash_table_lookup (acfg->method_blob_hash, entry->method));
6028                 if (!offset) {
6029                         buf2 = (guint8 *)g_malloc (1024);
6030                         p2 = buf2;
6031
6032                         encode_method_ref (acfg, entry->method, p2, &p2);
6033                         g_assert (p2 - buf2 < 1024);
6034
6035                         offset = add_to_blob (acfg, buf2, p2 - buf2);
6036                         g_free (buf2);
6037
6038                         g_hash_table_insert (acfg->method_blob_hash, entry->method, GUINT_TO_POINTER (offset + 1));
6039                 } else {
6040                         offset --;
6041                 }
6042
6043                 encode_value (offset, p, &p);
6044                 g_assert ((int)entry->info_type < 256);
6045                 g_assert (entry->data->type < 256);
6046                 encode_value ((entry->in_mrgctx ? 1 : 0) | (entry->info_type << 1) | (entry->data->type << 9), p, &p);
6047                 encode_patch (acfg, entry->data, p, &p);
6048                 break;
6049         }
6050         case MONO_PATCH_INFO_SEQ_POINT_INFO:
6051         case MONO_PATCH_INFO_AOT_MODULE:
6052                 break;
6053         case MONO_PATCH_INFO_SIGNATURE:
6054         case MONO_PATCH_INFO_GSHAREDVT_IN_WRAPPER:
6055                 encode_signature (acfg, (MonoMethodSignature*)patch_info->data.target, p, &p);
6056                 break;
6057         case MONO_PATCH_INFO_GSHAREDVT_CALL:
6058                 encode_signature (acfg, (MonoMethodSignature*)patch_info->data.gsharedvt->sig, p, &p);
6059                 encode_method_ref (acfg, patch_info->data.gsharedvt->method, p, &p);
6060                 break;
6061         case MONO_PATCH_INFO_GSHAREDVT_METHOD: {
6062                 MonoGSharedVtMethodInfo *info = patch_info->data.gsharedvt_method;
6063                 int i;
6064
6065                 encode_method_ref (acfg, info->method, p, &p);
6066                 encode_value (info->num_entries, p, &p);
6067                 for (i = 0; i < info->num_entries; ++i) {
6068                         MonoRuntimeGenericContextInfoTemplate *template_ = &info->entries [i];
6069
6070                         encode_value (template_->info_type, p, &p);
6071                         switch (mini_rgctx_info_type_to_patch_info_type (template_->info_type)) {
6072                         case MONO_PATCH_INFO_CLASS:
6073                                 encode_klass_ref (acfg, mono_class_from_mono_type ((MonoType *)template_->data), p, &p);
6074                                 break;
6075                         case MONO_PATCH_INFO_FIELD:
6076                                 encode_field_info (acfg, (MonoClassField *)template_->data, p, &p);
6077                                 break;
6078                         default:
6079                                 g_assert_not_reached ();
6080                                 break;
6081                         }
6082                 }
6083                 break;
6084         }
6085         case MONO_PATCH_INFO_LDSTR_LIT: {
6086                 const char *s = (const char *)patch_info->data.target;
6087                 int len = strlen (s);
6088
6089                 encode_value (len, p, &p);
6090                 memcpy (p, s, len + 1);
6091                 p += len + 1;
6092                 break;
6093         }
6094         case MONO_PATCH_INFO_VIRT_METHOD:
6095                 encode_klass_ref (acfg, patch_info->data.virt_method->klass, p, &p);
6096                 encode_method_ref (acfg, patch_info->data.virt_method->method, p, &p);
6097                 break;
6098         case MONO_PATCH_INFO_GC_SAFE_POINT_FLAG:
6099         case MONO_PATCH_INFO_JIT_THREAD_ATTACH:
6100                 break;
6101         default:
6102                 g_warning ("unable to handle jump info %d", patch_info->type);
6103                 g_assert_not_reached ();
6104         }
6105
6106         *endbuf = p;
6107 }
6108
6109 static void
6110 encode_patch_list (MonoAotCompile *acfg, GPtrArray *patches, int n_patches, gboolean llvm, int first_got_offset, guint8 *buf, guint8 **endbuf)
6111 {
6112         guint8 *p = buf;
6113         guint32 pindex, offset;
6114         MonoJumpInfo *patch_info;
6115
6116         encode_value (n_patches, p, &p);
6117
6118         for (pindex = 0; pindex < patches->len; ++pindex) {
6119                 patch_info = (MonoJumpInfo *)g_ptr_array_index (patches, pindex);
6120
6121                 if (patch_info->type == MONO_PATCH_INFO_NONE || patch_info->type == MONO_PATCH_INFO_BB)
6122                         /* Nothing to do */
6123                         continue;
6124
6125                 offset = get_got_offset (acfg, llvm, patch_info);
6126                 encode_value (offset, p, &p);
6127         }
6128
6129         *endbuf = p;
6130 }
6131
6132 static void
6133 emit_method_info (MonoAotCompile *acfg, MonoCompile *cfg)
6134 {
6135         MonoMethod *method;
6136         int pindex, buf_size, n_patches;
6137         GPtrArray *patches;
6138         MonoJumpInfo *patch_info;
6139         guint32 method_index;
6140         guint8 *p, *buf;
6141         guint32 first_got_offset;
6142
6143         method = cfg->orig_method;
6144
6145         method_index = get_method_index (acfg, method);
6146
6147         /* Sort relocations */
6148         patches = g_ptr_array_new ();
6149         for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next)
6150                 g_ptr_array_add (patches, patch_info);
6151         g_ptr_array_sort (patches, compare_patches);
6152
6153         first_got_offset = acfg->cfgs [method_index]->got_offset;
6154
6155         /**********************/
6156         /* Encode method info */
6157         /**********************/
6158
6159         buf_size = (patches->len < 1000) ? 40960 : 40960 + (patches->len * 64);
6160         p = buf = (guint8 *)g_malloc (buf_size);
6161
6162         if (mono_class_get_cctor (method->klass)) {
6163                 encode_value (1, p, &p);
6164                 encode_klass_ref (acfg, method->klass, p, &p);
6165         } else {
6166                 /* Not needed when loading the method */
6167                 encode_value (0, p, &p);
6168         }
6169
6170         g_assert (!(cfg->opt & MONO_OPT_SHARED));
6171
6172         n_patches = 0;
6173         for (pindex = 0; pindex < patches->len; ++pindex) {
6174                 patch_info = (MonoJumpInfo *)g_ptr_array_index (patches, pindex);
6175
6176                 if ((patch_info->type == MONO_PATCH_INFO_GOT_OFFSET) ||
6177                         (patch_info->type == MONO_PATCH_INFO_NONE)) {
6178                         patch_info->type = MONO_PATCH_INFO_NONE;
6179                         /* Nothing to do */
6180                         continue;
6181                 }
6182
6183                 if ((patch_info->type == MONO_PATCH_INFO_IMAGE) && (patch_info->data.image == acfg->image)) {
6184                         /* Stored in a GOT slot initialized at module load time */
6185                         patch_info->type = MONO_PATCH_INFO_NONE;
6186                         continue;
6187                 }
6188
6189                 if (patch_info->type == MONO_PATCH_INFO_GC_CARD_TABLE_ADDR ||
6190                         patch_info->type == MONO_PATCH_INFO_GC_NURSERY_START ||
6191                         patch_info->type == MONO_PATCH_INFO_GC_NURSERY_BITS ||
6192                         patch_info->type == MONO_PATCH_INFO_AOT_MODULE) {
6193                         /* Stored in a GOT slot initialized at module load time */
6194                         patch_info->type = MONO_PATCH_INFO_NONE;
6195                         continue;
6196                 }
6197
6198                 if (is_plt_patch (patch_info) && !(cfg->compile_llvm && acfg->aot_opts.llvm_only)) {
6199                         /* Calls are made through the PLT */
6200                         patch_info->type = MONO_PATCH_INFO_NONE;
6201                         continue;
6202                 }
6203
6204                 n_patches ++;
6205         }
6206
6207         if (n_patches)
6208                 g_assert (cfg->has_got_slots);
6209
6210         encode_patch_list (acfg, patches, n_patches, cfg->compile_llvm, first_got_offset, p, &p);
6211
6212         g_ptr_array_free (patches, TRUE);
6213
6214         acfg->stats.info_size += p - buf;
6215
6216         g_assert (p - buf < buf_size);
6217
6218         cfg->method_info_offset = add_to_blob (acfg, buf, p - buf);
6219         g_free (buf);
6220 }
6221
6222 static guint32
6223 get_unwind_info_offset (MonoAotCompile *acfg, guint8 *encoded, guint32 encoded_len)
6224 {
6225         guint32 cache_index;
6226         guint32 offset;
6227
6228         /* Reuse the unwind module to canonize and store unwind info entries */
6229         cache_index = mono_cache_unwind_info (encoded, encoded_len);
6230
6231         /* Use +/- 1 to distinguish 0s from missing entries */
6232         offset = GPOINTER_TO_UINT (g_hash_table_lookup (acfg->unwind_info_offsets, GUINT_TO_POINTER (cache_index + 1)));
6233         if (offset)
6234                 return offset - 1;
6235         else {
6236                 guint8 buf [16];
6237                 guint8 *p;
6238
6239                 /*
6240                  * It would be easier to use assembler symbols, but the caller needs an
6241                  * offset now.
6242                  */
6243                 offset = acfg->unwind_info_offset;
6244                 g_hash_table_insert (acfg->unwind_info_offsets, GUINT_TO_POINTER (cache_index + 1), GUINT_TO_POINTER (offset + 1));
6245                 g_ptr_array_add (acfg->unwind_ops, GUINT_TO_POINTER (cache_index));
6246
6247                 p = buf;
6248                 encode_value (encoded_len, p, &p);
6249
6250                 acfg->unwind_info_offset += encoded_len + (p - buf);
6251                 return offset;
6252         }
6253 }
6254
6255 static void
6256 emit_exception_debug_info (MonoAotCompile *acfg, MonoCompile *cfg, gboolean store_seq_points)
6257 {
6258         int i, k, buf_size;
6259         guint32 debug_info_size, seq_points_size;
6260         guint8 *code;
6261         MonoMethodHeader *header;
6262         guint8 *p, *buf, *debug_info;
6263         MonoJitInfo *jinfo = cfg->jit_info;
6264         guint32 flags;
6265         gboolean use_unwind_ops = FALSE;
6266         MonoSeqPointInfo *seq_points;
6267
6268         code = cfg->native_code;
6269         header = cfg->header;
6270
6271         if (!acfg->aot_opts.nodebug) {
6272                 mono_debug_serialize_debug_info (cfg, &debug_info, &debug_info_size);
6273         } else {
6274                 debug_info = NULL;
6275                 debug_info_size = 0;
6276         }
6277
6278         seq_points = cfg->seq_point_info;
6279         seq_points_size = (store_seq_points)? mono_seq_point_info_get_write_size (seq_points) : 0;
6280
6281         buf_size = header->num_clauses * 256 + debug_info_size + 2048 + seq_points_size + cfg->gc_map_size;
6282         if (jinfo->has_try_block_holes) {
6283                 MonoTryBlockHoleTableJitInfo *table = mono_jit_info_get_try_block_hole_table_info (jinfo);
6284                 buf_size += table->num_holes * 16;
6285         }
6286
6287         p = buf = (guint8 *)g_malloc (buf_size);
6288
6289         use_unwind_ops = cfg->unwind_ops != NULL;
6290
6291         flags = (jinfo->has_generic_jit_info ? 1 : 0) | (use_unwind_ops ? 2 : 0) | (header->num_clauses ? 4 : 0) | (seq_points_size ? 8 : 0) | (cfg->compile_llvm ? 16 : 0) | (jinfo->has_try_block_holes ? 32 : 0) | (cfg->gc_map ? 64 : 0) | (jinfo->has_arch_eh_info ? 128 : 0);
6292
6293         encode_value (flags, p, &p);
6294
6295         if (use_unwind_ops) {
6296                 guint32 encoded_len;
6297                 guint8 *encoded;
6298                 guint32 unwind_desc;
6299
6300                 encoded = mono_unwind_ops_encode (cfg->unwind_ops, &encoded_len);
6301
6302                 unwind_desc = get_unwind_info_offset (acfg, encoded, encoded_len);
6303                 encode_value (unwind_desc, p, &p);
6304
6305                 g_free (encoded);
6306         } else {
6307                 encode_value (jinfo->unwind_info, p, &p);
6308         }
6309
6310         /*Encode the number of holes before the number of clauses to make decoding easier*/
6311         if (jinfo->has_try_block_holes) {
6312                 MonoTryBlockHoleTableJitInfo *table = mono_jit_info_get_try_block_hole_table_info (jinfo);
6313                 encode_value (table->num_holes, p, &p);
6314         }
6315
6316         if (jinfo->has_arch_eh_info) {
6317                 /*
6318                  * In AOT mode, the code length is calculated from the address of the previous method,
6319                  * which could include alignment padding, so calculating the start of the epilog as
6320                  * code_len - epilog_size is correct any more. Save the real code len as a workaround.
6321                  */
6322                 encode_value (jinfo->code_size, p, &p);
6323         }
6324
6325         /* Exception table */
6326         if (cfg->compile_llvm) {
6327                 /*
6328                  * When using LLVM, we can't emit some data, like pc offsets, this reg/offset etc.,
6329                  * since the information is only available to llc. Instead, we let llc save the data
6330                  * into the LSDA, and read it from there at runtime.
6331                  */
6332                 /* The assembly might be CIL stripped so emit the data ourselves */
6333                 if (header->num_clauses)
6334                         encode_value (header->num_clauses, p, &p);
6335
6336                 for (k = 0; k < header->num_clauses; ++k) {
6337                         MonoExceptionClause *clause;
6338
6339                         clause = &header->clauses [k];
6340
6341                         encode_value (clause->flags, p, &p);
6342                         if (!(clause->flags == MONO_EXCEPTION_CLAUSE_FILTER || clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY)) {
6343                                 if (clause->data.catch_class) {
6344                                         guint8 *buf2, *p2;
6345                                         int len;
6346
6347                                         buf2 = (guint8 *)g_malloc (4096);
6348                                         p2 = buf2;
6349                                         encode_klass_ref (acfg, clause->data.catch_class, p2, &p2);
6350                                         len = p2 - buf2;
6351                                         g_assert (len < 4096);
6352                                         encode_value (len, p, &p);
6353                                         memcpy (p, buf2, len);
6354                                         p += p2 - buf2;
6355                                         g_free (buf2);
6356                                 } else {
6357                                         encode_value (0, p, &p);
6358                                 }
6359                         }
6360
6361                         /* Emit the IL ranges too, since they might not be available at runtime */
6362                         encode_value (clause->try_offset, p, &p);
6363                         encode_value (clause->try_len, p, &p);
6364                         encode_value (clause->handler_offset, p, &p);
6365                         encode_value (clause->handler_len, p, &p);
6366
6367                         /* Emit a list of nesting clauses */
6368                         for (i = 0; i < header->num_clauses; ++i) {
6369                                 gint32 cindex1 = k;
6370                                 MonoExceptionClause *clause1 = &header->clauses [cindex1];
6371                                 gint32 cindex2 = i;
6372                                 MonoExceptionClause *clause2 = &header->clauses [cindex2];
6373
6374                                 if (cindex1 != cindex2 && clause1->try_offset >= clause2->try_offset && clause1->handler_offset <= clause2->handler_offset)
6375                                         encode_value (i, p, &p);
6376                         }
6377                         encode_value (-1, p, &p);
6378                 }
6379         } else {
6380                 if (jinfo->num_clauses)
6381                         encode_value (jinfo->num_clauses, p, &p);
6382
6383                 for (k = 0; k < jinfo->num_clauses; ++k) {
6384                         MonoJitExceptionInfo *ei = &jinfo->clauses [k];
6385
6386                         encode_value (ei->flags, p, &p);
6387 #ifdef MONO_CONTEXT_SET_LLVM_EXC_REG
6388                         /* Not used for catch clauses */
6389                         if (ei->flags != MONO_EXCEPTION_CLAUSE_NONE)
6390                                 encode_value (ei->exvar_offset, p, &p);
6391 #else
6392                         encode_value (ei->exvar_offset, p, &p);
6393 #endif
6394
6395                         if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER || ei->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
6396                                 encode_value ((gint)((guint8*)ei->data.filter - code), p, &p);
6397                         else {
6398                                 if (ei->data.catch_class) {
6399                                         guint8 *buf2, *p2;
6400                                         int len;
6401
6402                                         buf2 = (guint8 *)g_malloc (4096);
6403                                         p2 = buf2;
6404                                         encode_klass_ref (acfg, ei->data.catch_class, p2, &p2);
6405                                         len = p2 - buf2;
6406                                         g_assert (len < 4096);
6407                                         encode_value (len, p, &p);
6408                                         memcpy (p, buf2, len);
6409                                         p += p2 - buf2;
6410                                         g_free (buf2);
6411                                 } else {
6412                                         encode_value (0, p, &p);
6413                                 }
6414                         }
6415
6416                         encode_value ((gint)((guint8*)ei->try_start - code), p, &p);
6417                         encode_value ((gint)((guint8*)ei->try_end - code), p, &p);
6418                         encode_value ((gint)((guint8*)ei->handler_start - code), p, &p);
6419                 }
6420         }
6421
6422         if (jinfo->has_try_block_holes) {
6423                 MonoTryBlockHoleTableJitInfo *table = mono_jit_info_get_try_block_hole_table_info (jinfo);
6424                 for (i = 0; i < table->num_holes; ++i) {
6425                         MonoTryBlockHoleJitInfo *hole = &table->holes [i];
6426                         encode_value (hole->clause, p, &p);
6427                         encode_value (hole->length, p, &p);
6428                         encode_value (hole->offset, p, &p);
6429                 }
6430         }
6431
6432         if (jinfo->has_arch_eh_info) {
6433                 MonoArchEHJitInfo *eh_info;
6434
6435                 eh_info = mono_jit_info_get_arch_eh_info (jinfo);
6436                 encode_value (eh_info->stack_size, p, &p);
6437                 encode_value (eh_info->epilog_size, p, &p);
6438         }
6439
6440         if (jinfo->has_generic_jit_info) {
6441                 MonoGenericJitInfo *gi = mono_jit_info_get_generic_jit_info (jinfo);
6442                 MonoGenericSharingContext* gsctx = gi->generic_sharing_context;
6443                 guint8 *buf2, *p2;
6444                 int len;
6445
6446                 encode_value (gi->nlocs, p, &p);
6447                 if (gi->nlocs) {
6448                         for (i = 0; i < gi->nlocs; ++i) {
6449                                 MonoDwarfLocListEntry *entry = &gi->locations [i];
6450
6451                                 encode_value (entry->is_reg ? 1 : 0, p, &p);
6452                                 encode_value (entry->reg, p, &p);
6453                                 if (!entry->is_reg)
6454                                         encode_value (entry->offset, p, &p);
6455                                 if (i == 0)
6456                                         g_assert (entry->from == 0);
6457                                 else
6458                                         encode_value (entry->from, p, &p);
6459                                 encode_value (entry->to, p, &p);
6460                         }
6461                 } else {
6462                         if (!cfg->compile_llvm) {
6463                                 encode_value (gi->has_this ? 1 : 0, p, &p);
6464                                 encode_value (gi->this_reg, p, &p);
6465                                 encode_value (gi->this_offset, p, &p);
6466                         }
6467                 }
6468
6469                 /*
6470                  * Need to encode jinfo->method too, since it is not equal to 'method'
6471                  * when using generic sharing.
6472                  */
6473                 buf2 = (guint8 *)g_malloc (4096);
6474                 p2 = buf2;
6475                 encode_method_ref (acfg, jinfo->d.method, p2, &p2);
6476                 len = p2 - buf2;
6477                 g_assert (len < 4096);
6478                 encode_value (len, p, &p);
6479                 memcpy (p, buf2, len);
6480                 p += p2 - buf2;
6481                 g_free (buf2);
6482
6483                 if (gsctx && gsctx->is_gsharedvt) {
6484                         encode_value (1, p, &p);
6485                 } else {
6486                         encode_value (0, p, &p);
6487                 }
6488         }
6489
6490         if (seq_points_size)
6491                 p += mono_seq_point_info_write (seq_points, p);
6492
6493         g_assert (debug_info_size < buf_size);
6494
6495         encode_value (debug_info_size, p, &p);
6496         if (debug_info_size) {
6497                 memcpy (p, debug_info, debug_info_size);
6498                 p += debug_info_size;
6499                 g_free (debug_info);
6500         }
6501
6502         /* GC Map */
6503         if (cfg->gc_map) {
6504                 encode_value (cfg->gc_map_size, p, &p);
6505                 /* The GC map requires 4 bytes of alignment */
6506                 while ((gsize)p % 4)
6507                         p ++;
6508                 memcpy (p, cfg->gc_map, cfg->gc_map_size);
6509                 p += cfg->gc_map_size;
6510         }
6511
6512         acfg->stats.ex_info_size += p - buf;
6513
6514         g_assert (p - buf < buf_size);
6515
6516         /* Emit info */
6517         /* The GC Map requires 4 byte alignment */
6518         cfg->ex_info_offset = add_to_blob_aligned (acfg, buf, p - buf, cfg->gc_map ? 4 : 1);
6519         g_free (buf);
6520 }
6521
6522 static guint32
6523 emit_klass_info (MonoAotCompile *acfg, guint32 token)
6524 {
6525         ERROR_DECL (error);
6526         MonoClass *klass = mono_class_get_checked (acfg->image, token, error);
6527         guint8 *p, *buf;
6528         int i, buf_size, res;
6529         gboolean no_special_static, cant_encode;
6530         gpointer iter = NULL;
6531
6532         if (!klass) {
6533                 mono_error_cleanup (error);
6534
6535                 buf_size = 16;
6536
6537                 p = buf = (guint8 *)g_malloc (buf_size);
6538
6539                 /* Mark as unusable */
6540                 encode_value (-1, p, &p);
6541
6542                 res = add_to_blob (acfg, buf, p - buf);
6543                 g_free (buf);
6544
6545                 return res;
6546         }
6547
6548         buf_size = 10240 + (m_class_get_vtable_size (klass) * 16);
6549         p = buf = (guint8 *)g_malloc (buf_size);
6550
6551         g_assert (klass);
6552
6553         mono_class_init (klass);
6554
6555         mono_class_get_nested_types (klass, &iter);
6556         g_assert (m_class_is_nested_classes_inited (klass));
6557
6558         mono_class_setup_vtable (klass);
6559
6560         /*
6561          * Emit all the information which is required for creating vtables so
6562          * the runtime does not need to create the MonoMethod structures which
6563          * take up a lot of space.
6564          */
6565
6566         no_special_static = !mono_class_has_special_static_fields (klass);
6567
6568         /* Check whenever we have enough info to encode the vtable */
6569         cant_encode = FALSE;
6570         MonoMethod **klass_vtable = m_class_get_vtable (klass);
6571         for (i = 0; i < m_class_get_vtable_size (klass); ++i) {
6572                 MonoMethod *cm = klass_vtable [i];
6573
6574                 if (cm && mono_method_signature (cm)->is_inflated && !g_hash_table_lookup (acfg->token_info_hash, cm))
6575                         cant_encode = TRUE;
6576         }
6577
6578         mono_class_has_finalizer (klass);
6579         if (mono_class_has_failure (klass))
6580                 cant_encode = TRUE;
6581
6582         if (mono_class_is_gtd (klass) || cant_encode) {
6583                 encode_value (-1, p, &p);
6584         } else {
6585                 gboolean has_nested = mono_class_get_nested_classes_property (klass) != NULL;
6586                 encode_value (m_class_get_vtable_size (klass), p, &p);
6587                 encode_value ((m_class_has_weak_fields (klass) << 9) | (mono_class_is_gtd (klass) ? (1 << 8) : 0) | (no_special_static << 7) | (m_class_has_static_refs (klass) << 6) | (m_class_has_references (klass) << 5) | ((m_class_is_blittable (klass) << 4) | (has_nested ? 1 : 0) << 3) | (m_class_has_cctor (klass) << 2) | (m_class_has_finalize (klass) << 1) | m_class_is_ghcimpl (klass), p, &p);
6588                 if (m_class_has_cctor (klass))
6589                         encode_method_ref (acfg, mono_class_get_cctor (klass), p, &p);
6590                 if (m_class_has_finalize (klass))
6591                         encode_method_ref (acfg, mono_class_get_finalizer (klass), p, &p);
6592
6593                 encode_value (m_class_get_instance_size (klass), p, &p);
6594                 encode_value (mono_class_data_size (klass), p, &p);
6595                 encode_value (m_class_get_packing_size (klass), p, &p);
6596                 encode_value (m_class_get_min_align (klass), p, &p);
6597
6598                 for (i = 0; i < m_class_get_vtable_size (klass); ++i) {
6599                         MonoMethod *cm = klass_vtable [i];
6600
6601                         if (cm)
6602                                 encode_method_ref (acfg, cm, p, &p);
6603                         else
6604                                 encode_value (0, p, &p);
6605                 }
6606         }
6607
6608         acfg->stats.class_info_size += p - buf;
6609
6610         g_assert (p - buf < buf_size);
6611         res = add_to_blob (acfg, buf, p - buf);
6612         g_free (buf);
6613
6614         return res;
6615 }
6616
6617 static char*
6618 get_plt_entry_debug_sym (MonoAotCompile *acfg, MonoJumpInfo *ji, GHashTable *cache)
6619 {
6620         char *debug_sym = NULL;
6621         char *prefix;
6622
6623         if (acfg->llvm && llvm_acfg->aot_opts.static_link) {
6624                 /* Need to add a prefix to create unique symbols */
6625                 prefix = g_strdup_printf ("plt_%s_", acfg->assembly_name_sym);
6626         } else {
6627 #if defined(TARGET_WIN32) && defined(TARGET_X86)
6628                 prefix = mangle_symbol_alloc ("plt_");
6629 #else
6630                 prefix = g_strdup ("plt_");
6631 #endif
6632         }
6633
6634         switch (ji->type) {
6635         case MONO_PATCH_INFO_METHOD:
6636                 debug_sym = get_debug_sym (ji->data.method, prefix, cache);
6637                 break;
6638         case MONO_PATCH_INFO_INTERNAL_METHOD:
6639                 debug_sym = g_strdup_printf ("%s_jit_icall_%s", prefix, ji->data.name);
6640                 break;
6641         case MONO_PATCH_INFO_RGCTX_FETCH:
6642                 debug_sym = g_strdup_printf ("%s_rgctx_fetch_%d", prefix, acfg->label_generator ++);
6643                 break;
6644         case MONO_PATCH_INFO_ICALL_ADDR:
6645         case MONO_PATCH_INFO_ICALL_ADDR_CALL: {
6646                 char *s = get_debug_sym (ji->data.method, "", cache);
6647
6648                 debug_sym = g_strdup_printf ("%s_icall_native_%s", prefix, s);
6649                 g_free (s);
6650                 break;
6651         }
6652         case MONO_PATCH_INFO_JIT_ICALL_ADDR:
6653                 debug_sym = g_strdup_printf ("%s_jit_icall_native_%s", prefix, ji->data.name);
6654                 break;
6655         default:
6656                 break;
6657         }
6658
6659         g_free (prefix);
6660
6661         return sanitize_symbol (acfg, debug_sym);
6662 }
6663
6664 /*
6665  * Calls made from AOTed code are routed through a table of jumps similar to the
6666  * ELF PLT (Program Linkage Table). Initially the PLT entries jump to code which transfers
6667  * control to the AOT runtime through a trampoline.
6668  */
6669 static void
6670 emit_plt (MonoAotCompile *acfg)
6671 {
6672         int i;
6673
6674         if (acfg->aot_opts.llvm_only) {
6675                 g_assert (acfg->plt_offset == 1);
6676                 return;
6677         }
6678
6679         emit_line (acfg);
6680
6681         emit_section_change (acfg, ".text", 0);
6682         emit_alignment_code (acfg, 16);
6683         emit_info_symbol (acfg, "plt");
6684         emit_label (acfg, acfg->plt_symbol);
6685
6686         for (i = 0; i < acfg->plt_offset; ++i) {
6687                 char *debug_sym = NULL;
6688                 MonoPltEntry *plt_entry = NULL;
6689
6690                 if (i == 0)
6691                         /*
6692                          * The first plt entry is unused.
6693                          */
6694                         continue;
6695
6696                 plt_entry = (MonoPltEntry *)g_hash_table_lookup (acfg->plt_offset_to_entry, GUINT_TO_POINTER (i));
6697
6698                 debug_sym = plt_entry->debug_sym;
6699
6700                 if (acfg->thumb_mixed && !plt_entry->jit_used)
6701                         /* Emit only a thumb version */
6702                         continue;
6703
6704                 /* Skip plt entries not actually called */
6705                 if (!plt_entry->jit_used && !plt_entry->llvm_used)
6706                         continue;
6707
6708                 if (acfg->llvm && !acfg->thumb_mixed) {
6709                         emit_label (acfg, plt_entry->llvm_symbol);
6710                         if (acfg->llvm) {
6711                                 emit_global_inner (acfg, plt_entry->llvm_symbol, TRUE);
6712 #if defined(TARGET_MACH)
6713                                 fprintf (acfg->fp, ".private_extern %s\n", plt_entry->llvm_symbol);
6714 #endif
6715                         }
6716                 }
6717
6718                 if (debug_sym) {
6719                         if (acfg->need_no_dead_strip) {
6720                                 emit_unset_mode (acfg);
6721                                 fprintf (acfg->fp, "    .no_dead_strip %s\n", debug_sym);
6722                         }
6723                         emit_local_symbol (acfg, debug_sym, NULL, TRUE);
6724                         emit_label (acfg, debug_sym);
6725                 }
6726
6727                 emit_label (acfg, plt_entry->symbol);
6728
6729                 arch_emit_plt_entry (acfg, acfg->got_symbol, (acfg->plt_got_offset_base + i) * sizeof (gpointer), acfg->plt_got_info_offsets [i]);
6730
6731                 if (debug_sym)
6732                         emit_symbol_size (acfg, debug_sym, ".");
6733         }
6734
6735         if (acfg->thumb_mixed) {
6736                 /* Make sure the ARM symbols don't alias the thumb ones */
6737                 emit_zero_bytes (acfg, 16);
6738
6739                 /*
6740                  * Emit a separate set of PLT entries using thumb2 which is called by LLVM generated
6741                  * code.
6742                  */
6743                 for (i = 0; i < acfg->plt_offset; ++i) {
6744                         char *debug_sym = NULL;
6745                         MonoPltEntry *plt_entry = NULL;
6746
6747                         if (i == 0)
6748                                 continue;
6749
6750                         plt_entry = (MonoPltEntry *)g_hash_table_lookup (acfg->plt_offset_to_entry, GUINT_TO_POINTER (i));
6751
6752                         /* Skip plt entries not actually called by LLVM code */
6753                         if (!plt_entry->llvm_used)
6754                                 continue;
6755
6756                         if (acfg->aot_opts.write_symbols) {
6757                                 if (plt_entry->debug_sym)
6758                                         debug_sym = g_strdup_printf ("%s_thumb", plt_entry->debug_sym);
6759                         }
6760
6761                         if (debug_sym) {
6762 #if defined(TARGET_MACH)
6763                                 fprintf (acfg->fp, "    .thumb_func %s\n", debug_sym);
6764                                 fprintf (acfg->fp, "    .no_dead_strip %s\n", debug_sym);
6765 #endif
6766                                 emit_local_symbol (acfg, debug_sym, NULL, TRUE);
6767                                 emit_label (acfg, debug_sym);
6768                         }
6769                         fprintf (acfg->fp, "\n.thumb_func\n");
6770
6771                         emit_label (acfg, plt_entry->llvm_symbol);
6772
6773                         if (acfg->llvm)
6774                                 emit_global_inner (acfg, plt_entry->llvm_symbol, TRUE);
6775
6776                         arch_emit_llvm_plt_entry (acfg, acfg->got_symbol, (acfg->plt_got_offset_base + i) * sizeof (gpointer), acfg->plt_got_info_offsets [i]);
6777
6778                         if (debug_sym) {
6779                                 emit_symbol_size (acfg, debug_sym, ".");
6780                                 g_free (debug_sym);
6781                         }
6782                 }
6783         }
6784
6785         emit_symbol_size (acfg, acfg->plt_symbol, ".");
6786
6787         emit_info_symbol (acfg, "plt_end");
6788
6789         arch_emit_unwind_info_sections (acfg, "plt", "plt_end", NULL);
6790 }
6791
6792 /*
6793  * emit_trampoline_full:
6794  *
6795  *   If EMIT_TINFO is TRUE, emit additional information which can be used to create a MonoJitInfo for this trampoline by
6796  * create_jit_info_for_trampoline ().
6797  */
6798 static G_GNUC_UNUSED void
6799 emit_trampoline_full (MonoAotCompile *acfg, int got_offset, MonoTrampInfo *info, gboolean emit_tinfo)
6800 {
6801         char start_symbol [MAX_SYMBOL_SIZE];
6802         char end_symbol [MAX_SYMBOL_SIZE];
6803         char symbol [MAX_SYMBOL_SIZE];
6804         guint32 buf_size, info_offset;
6805         MonoJumpInfo *patch_info;
6806         guint8 *buf, *p;
6807         GPtrArray *patches;
6808         char *name;
6809         guint8 *code;
6810         guint32 code_size;
6811         MonoJumpInfo *ji;
6812         GSList *unwind_ops;
6813
6814         g_assert (info);
6815
6816         name = info->name;
6817         code = info->code;
6818         code_size = info->code_size;
6819         ji = info->ji;
6820         unwind_ops = info->unwind_ops;
6821
6822         /* Emit code */
6823
6824         sprintf (start_symbol, "%s%s", acfg->user_symbol_prefix, name);
6825
6826         emit_section_change (acfg, ".text", 0);
6827         emit_global (acfg, start_symbol, TRUE);
6828         emit_alignment_code (acfg, AOT_FUNC_ALIGNMENT);
6829         emit_label (acfg, start_symbol);
6830
6831         sprintf (symbol, "%snamed_%s", acfg->temp_prefix, name);
6832         emit_label (acfg, symbol);
6833
6834         /*
6835          * The code should access everything through the GOT, so we pass
6836          * TRUE here.
6837          */
6838         emit_and_reloc_code (acfg, NULL, code, code_size, ji, TRUE, NULL);
6839
6840         emit_symbol_size (acfg, start_symbol, ".");
6841
6842         if (emit_tinfo) {
6843                 sprintf (end_symbol, "%snamede_%s", acfg->temp_prefix, name);
6844                 emit_label (acfg, end_symbol);
6845         }
6846
6847         /* Emit info */
6848
6849         /* Sort relocations */
6850         patches = g_ptr_array_new ();
6851         for (patch_info = ji; patch_info; patch_info = patch_info->next)
6852                 if (patch_info->type != MONO_PATCH_INFO_NONE)
6853                         g_ptr_array_add (patches, patch_info);
6854         g_ptr_array_sort (patches, compare_patches);
6855
6856         buf_size = patches->len * 128 + 128;
6857         buf = (guint8 *)g_malloc (buf_size);
6858         p = buf;
6859
6860         encode_patch_list (acfg, patches, patches->len, FALSE, got_offset, p, &p);
6861         g_assert (p - buf < buf_size);
6862         g_ptr_array_free (patches, TRUE);
6863
6864         sprintf (symbol, "%s%s_p", acfg->user_symbol_prefix, name);
6865
6866         info_offset = add_to_blob (acfg, buf, p - buf);
6867
6868         emit_section_change (acfg, RODATA_SECT, 0);
6869         emit_global (acfg, symbol, FALSE);
6870         emit_label (acfg, symbol);
6871
6872         emit_int32 (acfg, info_offset);
6873
6874         if (emit_tinfo) {
6875                 guint8 *encoded;
6876                 guint32 encoded_len;
6877                 guint32 uw_offset;
6878
6879                 /*
6880                  * Emit additional information which can be used to reconstruct a partial MonoTrampInfo.
6881                  */
6882                 encoded = mono_unwind_ops_encode (info->unwind_ops, &encoded_len);
6883                 uw_offset = get_unwind_info_offset (acfg, encoded, encoded_len);
6884                 g_free (encoded);
6885
6886                 emit_symbol_diff (acfg, end_symbol, start_symbol, 0);
6887                 emit_int32 (acfg, uw_offset);
6888         }
6889
6890         /* Emit debug info */
6891         if (unwind_ops) {
6892                 char symbol2 [MAX_SYMBOL_SIZE];
6893
6894                 sprintf (symbol, "%s", name);
6895                 sprintf (symbol2, "%snamed_%s", acfg->temp_prefix, name);
6896
6897                 arch_emit_unwind_info_sections (acfg, start_symbol, end_symbol, unwind_ops);
6898
6899                 if (acfg->dwarf)
6900                         mono_dwarf_writer_emit_trampoline (acfg->dwarf, symbol, symbol2, NULL, NULL, code_size, unwind_ops);
6901         }
6902
6903         g_free (buf);
6904 }
6905
6906 static G_GNUC_UNUSED void
6907 emit_trampoline (MonoAotCompile *acfg, int got_offset, MonoTrampInfo *info)
6908 {
6909         emit_trampoline_full (acfg, got_offset, info, TRUE);
6910 }
6911
6912 static void
6913 emit_trampolines (MonoAotCompile *acfg)
6914 {
6915         char symbol [MAX_SYMBOL_SIZE];
6916         char end_symbol [MAX_SYMBOL_SIZE];
6917         int i, tramp_got_offset;
6918         int ntype;
6919 #ifdef MONO_ARCH_HAVE_FULL_AOT_TRAMPOLINES
6920         int tramp_type;
6921 #endif
6922
6923         if ((!mono_aot_mode_is_full (&acfg->aot_opts) || acfg->aot_opts.llvm_only) && !acfg->aot_opts.interp)
6924                 return;
6925
6926         g_assert (acfg->image->assembly);
6927
6928         /* Currently, we emit most trampolines into the mscorlib AOT image. */
6929         if (strcmp (acfg->image->assembly->aname.name, "mscorlib") == 0) {
6930 #ifdef MONO_ARCH_HAVE_FULL_AOT_TRAMPOLINES
6931                 MonoTrampInfo *info;
6932
6933                 /*
6934                  * Emit the generic trampolines.
6935                  *
6936                  * We could save some code by treating the generic trampolines as a wrapper
6937                  * method, but that approach has its own complexities, so we choose the simpler
6938                  * method.
6939                  */
6940                 for (tramp_type = 0; tramp_type < MONO_TRAMPOLINE_NUM; ++tramp_type) {
6941                         /* we overload the boolean here to indicate the slightly different trampoline needed, see mono_arch_create_generic_trampoline() */
6942 #ifdef DISABLE_REMOTING
6943                         if (tramp_type == MONO_TRAMPOLINE_GENERIC_VIRTUAL_REMOTING)
6944                                 continue;
6945 #endif
6946                         mono_arch_create_generic_trampoline ((MonoTrampolineType)tramp_type, &info, acfg->aot_opts.use_trampolines_page? 2: TRUE);
6947                         emit_trampoline (acfg, acfg->got_offset, info);
6948                         mono_tramp_info_free (info);
6949                 }
6950
6951                 /* Emit the exception related code pieces */
6952                 mono_arch_get_restore_context (&info, TRUE);
6953                 emit_trampoline (acfg, acfg->got_offset, info);
6954                 mono_tramp_info_free (info);
6955
6956                 mono_arch_get_call_filter (&info, TRUE);
6957                 emit_trampoline (acfg, acfg->got_offset, info);
6958                 mono_tramp_info_free (info);
6959
6960                 mono_arch_get_throw_exception (&info, TRUE);
6961                 emit_trampoline (acfg, acfg->got_offset, info);
6962                 mono_tramp_info_free (info);
6963
6964                 mono_arch_get_rethrow_exception (&info, TRUE);
6965                 emit_trampoline (acfg, acfg->got_offset, info);
6966                 mono_tramp_info_free (info);
6967
6968                 mono_arch_get_throw_corlib_exception (&info, TRUE);
6969                 emit_trampoline (acfg, acfg->got_offset, info);
6970                 mono_tramp_info_free (info);
6971
6972 #ifdef MONO_ARCH_HAVE_SDB_TRAMPOLINES
6973                 mono_arch_create_sdb_trampoline (TRUE, &info, TRUE);
6974                 emit_trampoline (acfg, acfg->got_offset, info);
6975                 mono_tramp_info_free (info);
6976
6977                 mono_arch_create_sdb_trampoline (FALSE, &info, TRUE);
6978                 emit_trampoline (acfg, acfg->got_offset, info);
6979                 mono_tramp_info_free (info);
6980 #endif
6981
6982 #ifdef MONO_ARCH_GSHAREDVT_SUPPORTED
6983                 mono_arch_get_gsharedvt_trampoline (&info, TRUE);
6984                 if (info) {
6985                         emit_trampoline_full (acfg, acfg->got_offset, info, TRUE);
6986
6987                         /* Create a separate out trampoline for more information in stack traces */
6988                         info->name = g_strdup ("gsharedvt_out_trampoline");
6989                         emit_trampoline_full (acfg, acfg->got_offset, info, TRUE);
6990                         mono_tramp_info_free (info);
6991                 }
6992 #endif
6993
6994 #if defined(MONO_ARCH_HAVE_GET_TRAMPOLINES)
6995                 {
6996                         GSList *l = mono_arch_get_trampolines (TRUE);
6997
6998                         while (l) {
6999                                 MonoTrampInfo *info = (MonoTrampInfo *)l->data;
7000
7001                                 emit_trampoline (acfg, acfg->got_offset, info);
7002                                 l = l->next;
7003                         }
7004                 }
7005 #endif
7006
7007                 for (i = 0; i < acfg->aot_opts.nrgctx_fetch_trampolines; ++i) {
7008                         int offset;
7009
7010                         offset = MONO_RGCTX_SLOT_MAKE_RGCTX (i);
7011                         mono_arch_create_rgctx_lazy_fetch_trampoline (offset, &info, TRUE);
7012                         emit_trampoline (acfg, acfg->got_offset, info);
7013                         mono_tramp_info_free (info);
7014
7015                         offset = MONO_RGCTX_SLOT_MAKE_MRGCTX (i);
7016                         mono_arch_create_rgctx_lazy_fetch_trampoline (offset, &info, TRUE);
7017                         emit_trampoline (acfg, acfg->got_offset, info);
7018                         mono_tramp_info_free (info);
7019                 }
7020
7021 #ifdef MONO_ARCH_HAVE_GENERAL_RGCTX_LAZY_FETCH_TRAMPOLINE
7022                 mono_arch_create_general_rgctx_lazy_fetch_trampoline (&info, TRUE);
7023                 emit_trampoline (acfg, acfg->got_offset, info);
7024                 mono_tramp_info_free (info);
7025 #endif
7026
7027                 {
7028                         GSList *l;
7029
7030                         /* delegate_invoke_impl trampolines */
7031                         l = mono_arch_get_delegate_invoke_impls ();
7032                         while (l) {
7033                                 MonoTrampInfo *info = (MonoTrampInfo *)l->data;
7034
7035                                 emit_trampoline (acfg, acfg->got_offset, info);
7036                                 l = l->next;
7037                         }
7038                 }
7039
7040                 if (mono_aot_mode_is_interp (&acfg->aot_opts)) {
7041                         mono_arch_get_interp_to_native_trampoline (&info);
7042                         emit_trampoline (acfg, acfg->got_offset, info);
7043                 }
7044
7045 #endif /* #ifdef MONO_ARCH_HAVE_FULL_AOT_TRAMPOLINES */
7046
7047                 /* Emit trampolines which are numerous */
7048
7049                 /*
7050                  * These include the following:
7051                  * - specific trampolines
7052                  * - static rgctx invoke trampolines
7053                  * - imt trampolines
7054                  * These trampolines have the same code, they are parameterized by GOT
7055                  * slots.
7056                  * They are defined in this file, in the arch_... routines instead of
7057                  * in tramp-<ARCH>.c, since it is easier to do it this way.
7058                  */
7059
7060                 /*
7061                  * When running in aot-only mode, we can't create specific trampolines at
7062                  * runtime, so we create a few, and save them in the AOT file.
7063                  * Normal trampolines embed their argument as a literal inside the
7064                  * trampoline code, we can't do that here, so instead we embed an offset
7065                  * which needs to be added to the trampoline address to get the address of
7066                  * the GOT slot which contains the argument value.
7067                  * The generated trampolines jump to the generic trampolines using another
7068                  * GOT slot, which will be setup by the AOT loader to point to the
7069                  * generic trampoline code of the given type.
7070                  */
7071
7072                 /*
7073                  * FIXME: Maybe we should use more specific trampolines (i.e. one class init for
7074                  * each class).
7075                  */
7076
7077                 emit_section_change (acfg, ".text", 0);
7078
7079                 tramp_got_offset = acfg->got_offset;
7080
7081                 for (ntype = 0; ntype < MONO_AOT_TRAMP_NUM; ++ntype) {
7082                         switch (ntype) {
7083                         case MONO_AOT_TRAMP_SPECIFIC:
7084                                 sprintf (symbol, "specific_trampolines");
7085                                 break;
7086                         case MONO_AOT_TRAMP_STATIC_RGCTX:
7087                                 sprintf (symbol, "static_rgctx_trampolines");
7088                                 break;
7089                         case MONO_AOT_TRAMP_IMT:
7090                                 sprintf (symbol, "imt_trampolines");
7091                                 break;
7092                         case MONO_AOT_TRAMP_GSHAREDVT_ARG:
7093                                 sprintf (symbol, "gsharedvt_arg_trampolines");
7094                                 break;
7095                         default:
7096                                 g_assert_not_reached ();
7097                         }
7098
7099                         sprintf (end_symbol, "%s_e", symbol);
7100
7101                         if (acfg->aot_opts.write_symbols)
7102                                 emit_local_symbol (acfg, symbol, end_symbol, TRUE);
7103
7104                         emit_alignment_code (acfg, AOT_FUNC_ALIGNMENT);
7105                         emit_info_symbol (acfg, symbol);
7106
7107                         acfg->trampoline_got_offset_base [ntype] = tramp_got_offset;
7108
7109                         for (i = 0; i < acfg->num_trampolines [ntype]; ++i) {
7110                                 int tramp_size = 0;
7111
7112                                 switch (ntype) {
7113                                 case MONO_AOT_TRAMP_SPECIFIC:
7114                                         arch_emit_specific_trampoline (acfg, tramp_got_offset, &tramp_size);
7115                                         tramp_got_offset += 2;
7116                                 break;
7117                                 case MONO_AOT_TRAMP_STATIC_RGCTX:
7118                                         arch_emit_static_rgctx_trampoline (acfg, tramp_got_offset, &tramp_size);
7119                                         tramp_got_offset += 2;
7120                                         break;
7121                                 case MONO_AOT_TRAMP_IMT:
7122                                         arch_emit_imt_trampoline (acfg, tramp_got_offset, &tramp_size);
7123                                         tramp_got_offset += 1;
7124                                         break;
7125                                 case MONO_AOT_TRAMP_GSHAREDVT_ARG:
7126                                         arch_emit_gsharedvt_arg_trampoline (acfg, tramp_got_offset, &tramp_size);
7127                                         tramp_got_offset += 2;
7128                                         break;
7129                                 default:
7130                                         g_assert_not_reached ();
7131                                 }
7132                                 if (!acfg->trampoline_size [ntype]) {
7133                                         g_assert (tramp_size);
7134                                         acfg->trampoline_size [ntype] = tramp_size;
7135                                 }
7136                         }
7137
7138                         emit_label (acfg, end_symbol);
7139                         emit_int32 (acfg, 0);
7140                 }
7141
7142                 arch_emit_specific_trampoline_pages (acfg);
7143
7144                 /* Reserve some entries at the end of the GOT for our use */
7145                 acfg->num_trampoline_got_entries = tramp_got_offset - acfg->got_offset;
7146         }
7147
7148         acfg->got_offset += acfg->num_trampoline_got_entries;
7149 }
7150
7151 static gboolean
7152 str_begins_with (const char *str1, const char *str2)
7153 {
7154         int len = strlen (str2);
7155         return strncmp (str1, str2, len) == 0;
7156 }
7157
7158 void*
7159 mono_aot_readonly_field_override (MonoClassField *field)
7160 {
7161         ReadOnlyValue *rdv;
7162         for (rdv = readonly_values; rdv; rdv = rdv->next) {
7163                 char *p = rdv->name;
7164                 int len;
7165                 len = strlen (m_class_get_name_space (field->parent));
7166                 if (strncmp (p, m_class_get_name_space (field->parent), len))
7167                         continue;
7168                 p += len;
7169                 if (*p++ != '.')
7170                         continue;
7171                 len = strlen (m_class_get_name (field->parent));
7172                 if (strncmp (p, m_class_get_name (field->parent), len))
7173                         continue;
7174                 p += len;
7175                 if (*p++ != '.')
7176                         continue;
7177                 if (strcmp (p, field->name))
7178                         continue;
7179                 switch (rdv->type) {
7180                 case MONO_TYPE_I1:
7181                         return &rdv->value.i1;
7182                 case MONO_TYPE_I2:
7183                         return &rdv->value.i2;
7184                 case MONO_TYPE_I4:
7185                         return &rdv->value.i4;
7186                 default:
7187                         break;
7188                 }
7189         }
7190         return NULL;
7191 }
7192
7193 static void
7194 add_readonly_value (MonoAotOptions *opts, const char *val)
7195 {
7196         ReadOnlyValue *rdv;
7197         const char *fval;
7198         const char *tval;
7199         /* the format of val is:
7200          * namespace.typename.fieldname=type/value
7201          * type can be i1 for uint8/int8/boolean, i2 for uint16/int16/char, i4 for uint32/int32
7202          */
7203         fval = strrchr (val, '/');
7204         if (!fval) {
7205                 fprintf (stderr, "AOT : invalid format for readonly field '%s', missing /.\n", val);
7206                 exit (1);
7207         }
7208         tval = strrchr (val, '=');
7209         if (!tval) {
7210                 fprintf (stderr, "AOT : invalid format for readonly field '%s', missing =.\n", val);
7211                 exit (1);
7212         }
7213         rdv = g_new0 (ReadOnlyValue, 1);
7214         rdv->name = (char *)g_malloc0 (tval - val + 1);
7215         memcpy (rdv->name, val, tval - val);
7216         tval++;
7217         fval++;
7218         if (strncmp (tval, "i1", 2) == 0) {
7219                 rdv->value.i1 = atoi (fval);
7220                 rdv->type = MONO_TYPE_I1;
7221         } else if (strncmp (tval, "i2", 2) == 0) {
7222                 rdv->value.i2 = atoi (fval);
7223                 rdv->type = MONO_TYPE_I2;
7224         } else if (strncmp (tval, "i4", 2) == 0) {
7225                 rdv->value.i4 = atoi (fval);
7226                 rdv->type = MONO_TYPE_I4;
7227         } else {
7228                 fprintf (stderr, "AOT : unsupported type for readonly field '%s'.\n", tval);
7229                 exit (1);
7230         }
7231         rdv->next = readonly_values;
7232         readonly_values = rdv;
7233 }
7234
7235 static gchar *
7236 clean_path (gchar * path)
7237 {
7238         if (!path)
7239                 return NULL;
7240
7241         if (g_str_has_suffix (path, G_DIR_SEPARATOR_S))
7242                 return path;
7243
7244         gchar *clean = g_strconcat (path, G_DIR_SEPARATOR_S, NULL);
7245         g_free (path);
7246
7247         return clean;
7248 }
7249
7250 static gchar *
7251 wrap_path (gchar * path)
7252 {
7253         int len;
7254         if (!path)
7255                 return NULL;
7256
7257         // If the string contains no spaces, just return the original string.
7258         if (strstr (path, " ") == NULL)
7259                 return path;
7260
7261         // If the string is already wrapped in quotes, return it.
7262         len = strlen (path);
7263         if (len >= 2 && path[0] == '\"' && path[len-1] == '\"')
7264                 return path;
7265
7266         // If the string contains spaces, then wrap it in quotes.
7267         gchar *clean = g_strdup_printf ("\"%s\"", path);
7268
7269         return clean;
7270 }
7271
7272 // Duplicate a char range and add it to a ptrarray, but only if it is nonempty
7273 static void
7274 ptr_array_add_range_if_nonempty(GPtrArray *args, gchar const *start, gchar const *end)
7275 {
7276         ptrdiff_t len = end-start;
7277         if (len > 0)
7278                 g_ptr_array_add (args, g_strndup (start, len));
7279 }
7280
7281 static GPtrArray *
7282 mono_aot_split_options (const char *aot_options)
7283 {
7284         enum MonoAotOptionState {
7285                 MONO_AOT_OPTION_STATE_DEFAULT,
7286                 MONO_AOT_OPTION_STATE_STRING,
7287                 MONO_AOT_OPTION_STATE_ESCAPE,
7288         };
7289
7290         GPtrArray *args = g_ptr_array_new ();
7291         enum MonoAotOptionState state = MONO_AOT_OPTION_STATE_DEFAULT;
7292         gchar const *opt_start = aot_options;
7293         gboolean end_of_string = FALSE;
7294         gchar cur;
7295
7296         g_return_val_if_fail (aot_options != NULL, NULL);
7297
7298         while ((cur = *aot_options) != '\0') {
7299                 if (state == MONO_AOT_OPTION_STATE_ESCAPE)
7300                         goto next;
7301
7302                 switch (cur) {
7303                 case '"':
7304                         // If we find a quote, then if we're in the default case then
7305                         // it means we've found the start of a string, if not then it
7306                         // means we've found the end of the string and should switch
7307                         // back to the default case.
7308                         switch (state) {
7309                         case MONO_AOT_OPTION_STATE_DEFAULT:
7310                                 state = MONO_AOT_OPTION_STATE_STRING;
7311                                 break;
7312                         case MONO_AOT_OPTION_STATE_STRING:
7313                                 state = MONO_AOT_OPTION_STATE_DEFAULT;
7314                                 break;
7315                         case MONO_AOT_OPTION_STATE_ESCAPE:
7316                                 g_assert_not_reached ();
7317                                 break;
7318                         }
7319                         break;
7320                 case '\\':
7321                         // If we've found an escaping operator, then this means we
7322                         // should not process the next character if inside a string.
7323                         if (state == MONO_AOT_OPTION_STATE_STRING)
7324                                 state = MONO_AOT_OPTION_STATE_ESCAPE;
7325                         break;
7326                 case ',':
7327                         // If we're in the default state then this means we've found
7328                         // an option, store it for later processing.
7329                         if (state == MONO_AOT_OPTION_STATE_DEFAULT)
7330                                 goto new_opt;
7331                         break;
7332                 }
7333
7334         next:
7335                 aot_options++;
7336         restart:
7337                 // If the next character is end of string, then process the last option.
7338                 if (*(aot_options) == '\0') {
7339                         end_of_string = TRUE;
7340                         goto new_opt;
7341                 }
7342                 continue;
7343
7344         new_opt:
7345                 ptr_array_add_range_if_nonempty (args, opt_start, aot_options);
7346                 opt_start = ++aot_options;
7347                 if (end_of_string)
7348                         break;
7349                 goto restart; // Check for null and continue loop
7350         }
7351
7352         return args;
7353 }
7354
7355 static void
7356 mono_aot_parse_options (const char *aot_options, MonoAotOptions *opts)
7357 {
7358         GPtrArray* args;
7359
7360         args = mono_aot_split_options (aot_options ? aot_options : "");
7361         for (int i = 0; i < args->len; ++i) {
7362                 const char *arg = (const char *)g_ptr_array_index (args, i);
7363
7364                 if (str_begins_with (arg, "outfile=")) {
7365                         opts->outfile = g_strdup (arg + strlen ("outfile="));
7366                 } else if (str_begins_with (arg, "llvm-outfile=")) {
7367                         opts->llvm_outfile = g_strdup (arg + strlen ("llvm-outfile="));
7368                 } else if (str_begins_with (arg, "temp-path=")) {
7369                         opts->temp_path = clean_path (g_strdup (arg + strlen ("temp-path=")));
7370                 } else if (str_begins_with (arg, "save-temps")) {
7371                         opts->save_temps = TRUE;
7372                 } else if (str_begins_with (arg, "keep-temps")) {
7373                         opts->save_temps = TRUE;
7374                 } else if (str_begins_with (arg, "write-symbols")) {
7375                         opts->write_symbols = TRUE;
7376                 } else if (str_begins_with (arg, "no-write-symbols")) {
7377                         opts->write_symbols = FALSE;
7378                 // Intentionally undocumented -- one-off experiment
7379                 } else if (str_begins_with (arg, "metadata-only")) {
7380                         opts->metadata_only = TRUE;
7381                 } else if (str_begins_with (arg, "bind-to-runtime-version")) {
7382                         opts->bind_to_runtime_version = TRUE;
7383                 } else if (str_begins_with (arg, "full")) {
7384                         opts->mode = MONO_AOT_MODE_FULL;
7385                 } else if (str_begins_with (arg, "hybrid")) {
7386                         opts->mode = MONO_AOT_MODE_HYBRID;
7387                 } else if (str_begins_with (arg, "interp")) {
7388                         opts->interp = TRUE;
7389                 } else if (str_begins_with (arg, "threads=")) {
7390                         opts->nthreads = atoi (arg + strlen ("threads="));
7391                 } else if (str_begins_with (arg, "static")) {
7392                         opts->static_link = TRUE;
7393                         opts->no_dlsym = TRUE;
7394                 } else if (str_begins_with (arg, "asmonly")) {
7395                         opts->asm_only = TRUE;
7396                 } else if (str_begins_with (arg, "asmwriter")) {
7397                         opts->asm_writer = TRUE;
7398                 } else if (str_begins_with (arg, "nodebug")) {
7399                         opts->nodebug = TRUE;
7400                 } else if (str_begins_with (arg, "dwarfdebug")) {
7401                         opts->dwarf_debug = TRUE;
7402                 // Intentionally undocumented -- No one remembers what this does. It appears to be ARM-only
7403                 } else if (str_begins_with (arg, "nopagetrampolines")) {
7404                         opts->use_trampolines_page = FALSE;
7405                 } else if (str_begins_with (arg, "ntrampolines=")) {
7406                         opts->ntrampolines = atoi (arg + strlen ("ntrampolines="));
7407                 } else if (str_begins_with (arg, "nrgctx-trampolines=")) {
7408                         opts->nrgctx_trampolines = atoi (arg + strlen ("nrgctx-trampolines="));
7409                 } else if (str_begins_with (arg, "nrgctx-fetch-trampolines=")) {
7410                         opts->nrgctx_fetch_trampolines = atoi (arg + strlen ("nrgctx-fetch-trampolines="));
7411                 } else if (str_begins_with (arg, "nimt-trampolines=")) {
7412                         opts->nimt_trampolines = atoi (arg + strlen ("nimt-trampolines="));
7413                 } else if (str_begins_with (arg, "ngsharedvt-trampolines=")) {
7414                         opts->ngsharedvt_arg_trampolines = atoi (arg + strlen ("ngsharedvt-trampolines="));
7415                 } else if (str_begins_with (arg, "tool-prefix=")) {
7416                         opts->tool_prefix = g_strdup (arg + strlen ("tool-prefix="));
7417                 } else if (str_begins_with (arg, "ld-flags=")) {
7418                         opts->ld_flags = g_strdup (arg + strlen ("ld-flags="));
7419                 } else if (str_begins_with (arg, "soft-debug")) {
7420                         opts->soft_debug = TRUE;
7421                 // Intentionally undocumented x2-- deprecated
7422                 } else if (str_begins_with (arg, "gen-seq-points-file=")) {
7423                         fprintf (stderr, "Mono Warning: aot option gen-seq-points-file= is deprecated.\n");
7424                 } else if (str_begins_with (arg, "gen-seq-points-file")) {
7425                         fprintf (stderr, "Mono Warning: aot option gen-seq-points-file is deprecated.\n");
7426                 } else if (str_begins_with (arg, "msym-dir=")) {
7427                         mini_debug_options.no_seq_points_compact_data = FALSE;
7428                         opts->gen_msym_dir = TRUE;
7429                         opts->gen_msym_dir_path = g_strdup (arg + strlen ("msym_dir="));;
7430                 } else if (str_begins_with (arg, "direct-pinvoke")) {
7431                         opts->direct_pinvoke = TRUE;
7432                 } else if (str_begins_with (arg, "direct-icalls")) {
7433                         opts->direct_icalls = TRUE;
7434                 } else if (str_begins_with (arg, "no-direct-calls")) {
7435                         opts->no_direct_calls = TRUE;
7436                 } else if (str_begins_with (arg, "print-skipped")) {
7437                         opts->print_skipped_methods = TRUE;
7438                 } else if (str_begins_with (arg, "stats")) {
7439                         opts->stats = TRUE;
7440                 // Intentionally undocumented-- has no known function other than to debug the compiler
7441                 } else if (str_begins_with (arg, "no-instances")) {
7442                         opts->no_instances = TRUE;
7443                 // Intentionally undocumented x4-- Used for internal debugging of compiler
7444                 } else if (str_begins_with (arg, "log-generics")) {
7445                         opts->log_generics = TRUE;
7446                 } else if (str_begins_with (arg, "log-instances=")) {
7447                         opts->log_instances = TRUE;
7448                         opts->instances_logfile_path = g_strdup (arg + strlen ("log-instances="));
7449                 } else if (str_begins_with (arg, "log-instances")) {
7450                         opts->log_instances = TRUE;
7451                 } else if (str_begins_with (arg, "internal-logfile=")) {
7452                         opts->logfile = g_strdup (arg + strlen ("internal-logfile="));
7453                 } else if (str_begins_with (arg, "dedup-skip")) {
7454                         opts->dedup = TRUE;
7455                 } else if (str_begins_with (arg, "dedup-include=")) {
7456                         opts->dedup_include = g_strdup (arg + strlen ("dedup-include="));
7457                 } else if (str_begins_with (arg, "mtriple=")) {
7458                         opts->mtriple = g_strdup (arg + strlen ("mtriple="));
7459                 } else if (str_begins_with (arg, "llvm-path=")) {
7460                         opts->llvm_path = clean_path (g_strdup (arg + strlen ("llvm-path=")));
7461                 } else if (!strcmp (arg, "llvm")) {
7462                         opts->llvm = TRUE;
7463                 } else if (str_begins_with (arg, "readonly-value=")) {
7464                         add_readonly_value (opts, arg + strlen ("readonly-value="));
7465                 } else if (str_begins_with (arg, "info")) {
7466                         printf ("AOT target setup: %s.\n", AOT_TARGET_STR);
7467                         exit (0);
7468                 // Intentionally undocumented: Used for precise stack maps, which are not available yet
7469                 } else if (str_begins_with (arg, "gc-maps")) {
7470                         mini_gc_enable_gc_maps_for_aot ();
7471                 // Intentionally undocumented: Used for internal debugging
7472                 } else if (str_begins_with (arg, "dump")) {
7473                         opts->dump_json = TRUE;
7474                 } else if (str_begins_with (arg, "llvmonly")) {
7475                         opts->mode = MONO_AOT_MODE_FULL;
7476                         opts->llvm = TRUE;
7477                         opts->llvm_only = TRUE;
7478                 } else if (str_begins_with (arg, "data-outfile=")) {
7479                         opts->data_outfile = g_strdup (arg + strlen ("data-outfile="));
7480                 } else if (str_begins_with (arg, "profile=")) {
7481                         opts->profile_files = g_list_append (opts->profile_files, g_strdup (arg + strlen ("profile=")));
7482                 } else if (!strcmp (arg, "profile-only")) {
7483                         opts->profile_only = TRUE;
7484                 } else if (!strcmp (arg, "verbose")) {
7485                         opts->verbose = TRUE;
7486                 } else if (str_begins_with (arg, "help") || str_begins_with (arg, "?")) {
7487                         printf ("Supported options for --aot:\n");
7488                         printf ("    asmonly\n");
7489                         printf ("    bind-to-runtime-version\n");
7490                         printf ("    bitcode\n");
7491                         printf ("    data-outfile=\n");
7492                         printf ("    direct-icalls\n");
7493                         printf ("    direct-pinvoke\n");
7494                         printf ("    dwarfdebug\n");
7495                         printf ("    full\n");
7496                         printf ("    hybrid\n");
7497                         printf ("    info\n");
7498                         printf ("    keep-temps\n");
7499                         printf ("    llvm\n");
7500                         printf ("    llvmonly\n");
7501                         printf ("    llvm-outfile=\n");
7502                         printf ("    llvm-path=\n");
7503                         printf ("    msym-dir=\n");
7504                         printf ("    mtriple\n");
7505                         printf ("    nimt-trampolines=\n");
7506                         printf ("    nodebug\n");
7507                         printf ("    no-direct-calls\n");
7508                         printf ("    no-write-symbols\n");
7509                         printf ("    nrgctx-trampolines=\n");
7510                         printf ("    nrgctx-fetch-trampolines=\n");
7511                         printf ("    ngsharedvt-trampolines=\n");
7512                         printf ("    ntrampolines=\n");
7513                         printf ("    outfile=\n");
7514                         printf ("    profile=\n");
7515                         printf ("    profile-only\n");
7516                         printf ("    print-skipped-methods\n");
7517                         printf ("    readonly-value=\n");
7518                         printf ("    save-temps\n");
7519                         printf ("    soft-debug\n");
7520                         printf ("    static\n");
7521                         printf ("    stats\n");
7522                         printf ("    temp-path=\n");
7523                         printf ("    tool-prefix=\n");
7524                         printf ("    threads=\n");
7525                         printf ("    write-symbols\n");
7526                         printf ("    verbose\n");
7527                         printf ("    help/?\n");
7528                         exit (0);
7529                 } else {
7530                         fprintf (stderr, "AOT : Unknown argument '%s'.\n", arg);
7531                         exit (1);
7532                 }
7533
7534                 g_free ((gpointer) arg);
7535         }
7536
7537         if (opts->use_trampolines_page) {
7538                 opts->ntrampolines = 0;
7539                 opts->nrgctx_trampolines = 0;
7540                 opts->nimt_trampolines = 0;
7541                 opts->ngsharedvt_arg_trampolines = 0;
7542         }
7543
7544         g_ptr_array_free (args, /*free_seg=*/TRUE);
7545 }
7546
7547 static void
7548 add_token_info_hash (gpointer key, gpointer value, gpointer user_data)
7549 {
7550         MonoMethod *method = (MonoMethod*)key;
7551         MonoJumpInfoToken *ji = (MonoJumpInfoToken*)value;
7552         MonoAotCompile *acfg = (MonoAotCompile *)user_data;
7553         MonoJumpInfoToken *new_ji;
7554
7555         new_ji = (MonoJumpInfoToken *)mono_mempool_alloc0 (acfg->mempool, sizeof (MonoJumpInfoToken));
7556         new_ji->image = ji->image;
7557         new_ji->token = ji->token;
7558         g_hash_table_insert (acfg->token_info_hash, method, new_ji);
7559 }
7560
7561 static gboolean
7562 can_encode_class (MonoAotCompile *acfg, MonoClass *klass)
7563 {
7564         if (m_class_get_type_token (klass))
7565                 return TRUE;
7566         if ((m_class_get_byval_arg (klass)->type == MONO_TYPE_VAR) || (m_class_get_byval_arg (klass)->type == MONO_TYPE_MVAR) || (m_class_get_byval_arg (klass)->type == MONO_TYPE_PTR))
7567                 return TRUE;
7568         if (m_class_get_rank (klass))
7569                 return can_encode_class (acfg, m_class_get_element_class (klass));
7570         return FALSE;
7571 }
7572
7573 static gboolean
7574 can_encode_method (MonoAotCompile *acfg, MonoMethod *method)
7575 {
7576                 if (method->wrapper_type) {
7577                         switch (method->wrapper_type) {
7578                         case MONO_WRAPPER_NONE:
7579                         case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK:
7580                         case MONO_WRAPPER_XDOMAIN_INVOKE:
7581                         case MONO_WRAPPER_STFLD:
7582                         case MONO_WRAPPER_LDFLD:
7583                         case MONO_WRAPPER_LDFLDA:
7584                         case MONO_WRAPPER_STELEMREF:
7585                         case MONO_WRAPPER_PROXY_ISINST:
7586                         case MONO_WRAPPER_ALLOC:
7587                         case MONO_WRAPPER_REMOTING_INVOKE:
7588                         case MONO_WRAPPER_UNKNOWN:
7589                         case MONO_WRAPPER_WRITE_BARRIER:
7590                         case MONO_WRAPPER_DELEGATE_INVOKE:
7591                         case MONO_WRAPPER_DELEGATE_BEGIN_INVOKE:
7592                         case MONO_WRAPPER_DELEGATE_END_INVOKE:
7593                         case MONO_WRAPPER_SYNCHRONIZED:
7594                                 break;
7595                         case MONO_WRAPPER_MANAGED_TO_MANAGED:
7596                         case MONO_WRAPPER_CASTCLASS: {
7597                                 WrapperInfo *info = mono_marshal_get_wrapper_info (method);
7598
7599                                 if (info)
7600                                         return TRUE;
7601                                 else
7602                                         return FALSE;
7603                                 break;
7604                         }
7605                         default:
7606                                 //printf ("Skip (wrapper call): %d -> %s\n", patch_info->type, mono_method_full_name (patch_info->data.method, TRUE));
7607                                 return FALSE;
7608                         }
7609                 } else {
7610                         if (!method->token) {
7611                                 /* The method is part of a constructed type like Int[,].Set (). */
7612                                 if (!g_hash_table_lookup (acfg->token_info_hash, method)) {
7613                                         if (m_class_get_rank (method->klass))
7614                                                 return TRUE;
7615                                         return FALSE;
7616                                 }
7617                         }
7618                 }
7619                 return TRUE;
7620 }
7621
7622 static gboolean
7623 can_encode_patch (MonoAotCompile *acfg, MonoJumpInfo *patch_info)
7624 {
7625         switch (patch_info->type) {
7626         case MONO_PATCH_INFO_METHOD:
7627         case MONO_PATCH_INFO_METHODCONST:
7628         case MONO_PATCH_INFO_METHOD_CODE_SLOT: {
7629                 MonoMethod *method = patch_info->data.method;
7630
7631                 return can_encode_method (acfg, method);
7632         }
7633         case MONO_PATCH_INFO_VTABLE:
7634         case MONO_PATCH_INFO_CLASS:
7635         case MONO_PATCH_INFO_IID:
7636         case MONO_PATCH_INFO_ADJUSTED_IID:
7637                 if (!can_encode_class (acfg, patch_info->data.klass)) {
7638                         //printf ("Skip: %s\n", mono_type_full_name (&patch_info->data.klass->byval_arg));
7639                         return FALSE;
7640                 }
7641                 break;
7642         case MONO_PATCH_INFO_DELEGATE_TRAMPOLINE: {
7643                 if (!can_encode_class (acfg, patch_info->data.del_tramp->klass)) {
7644                         //printf ("Skip: %s\n", mono_type_full_name (&patch_info->data.klass->byval_arg));
7645                         return FALSE;
7646                 }
7647                 break;
7648         }
7649         case MONO_PATCH_INFO_RGCTX_FETCH:
7650         case MONO_PATCH_INFO_RGCTX_SLOT_INDEX: {
7651                 MonoJumpInfoRgctxEntry *entry = patch_info->data.rgctx_entry;
7652
7653                 if (!can_encode_method (acfg, entry->method))
7654                         return FALSE;
7655                 if (!can_encode_patch (acfg, entry->data))
7656                         return FALSE;
7657                 break;
7658         }
7659         default:
7660                 break;
7661         }
7662
7663         return TRUE;
7664 }
7665
7666 static gboolean
7667 is_concrete_type (MonoType *t)
7668 {
7669         MonoClass *klass;
7670         int i;
7671
7672         if (t->type == MONO_TYPE_VAR || t->type == MONO_TYPE_MVAR)
7673                 return FALSE;
7674         if (t->type == MONO_TYPE_GENERICINST) {
7675                 MonoGenericContext *orig_ctx;
7676                 MonoGenericInst *inst;
7677                 MonoType *arg;
7678
7679                 if (!MONO_TYPE_ISSTRUCT (t))
7680                         return TRUE;
7681                 klass = mono_class_from_mono_type (t);
7682                 orig_ctx = &mono_class_get_generic_class (klass)->context;
7683
7684                 inst = orig_ctx->class_inst;
7685                 if (inst) {
7686                         for (i = 0; i < inst->type_argc; ++i) {
7687                                 arg = mini_get_underlying_type (inst->type_argv [i]);
7688                                 if (!is_concrete_type (arg))
7689                                         return FALSE;
7690                         }
7691                 }
7692                 inst = orig_ctx->method_inst;
7693                 if (inst) {
7694                         for (i = 0; i < inst->type_argc; ++i) {
7695                                 arg = mini_get_underlying_type (inst->type_argv [i]);
7696                                 if (!is_concrete_type (arg))
7697                                         return FALSE;
7698                         }
7699                 }
7700         }
7701         return TRUE;
7702 }
7703
7704 /* LOCKING: Assumes the loader lock is held */
7705 static void
7706 add_gsharedvt_wrappers (MonoAotCompile *acfg, MonoMethodSignature *sig, gboolean gsharedvt_in, gboolean gsharedvt_out, gboolean interp_in)
7707 {
7708         MonoMethod *wrapper;
7709         gboolean concrete = TRUE;
7710         gboolean add_in = gsharedvt_in;
7711         gboolean add_out = gsharedvt_out;
7712
7713         if (gsharedvt_in && g_hash_table_lookup (acfg->gsharedvt_in_signatures, sig))
7714                 add_in = FALSE;
7715         if (gsharedvt_out && g_hash_table_lookup (acfg->gsharedvt_out_signatures, sig))
7716                 add_out = FALSE;
7717
7718         if (!add_in && !add_out)
7719                 return;
7720
7721         if (mini_is_gsharedvt_variable_signature (sig))
7722                 return;
7723
7724         if (add_in)
7725                 g_hash_table_insert (acfg->gsharedvt_in_signatures, sig, sig);
7726         if (add_out)
7727                 g_hash_table_insert (acfg->gsharedvt_out_signatures, sig, sig);
7728
7729         if (sig->has_type_parameters) {
7730                 /* For signatures created during generic sharing, convert them to a concrete signature if possible */
7731                 MonoMethodSignature *copy = mono_metadata_signature_dup (sig);
7732                 int i;
7733
7734                 //printf ("%s\n", mono_signature_full_name (sig));
7735
7736                 copy->ret = mini_get_underlying_type (sig->ret);
7737                 if (!is_concrete_type (copy->ret))
7738                         concrete = FALSE;
7739                 for (i = 0; i < sig->param_count; ++i) {
7740                         copy->params [i] = mini_get_underlying_type (sig->params [i]);
7741                         if (!is_concrete_type (copy->params [i]))
7742                                 concrete = FALSE;
7743                 }
7744                 copy->has_type_parameters = 0;
7745                 if (!concrete)
7746                         return;
7747                 sig = copy;
7748         }
7749
7750         //printf ("%s\n", mono_signature_full_name (sig));
7751
7752         if (gsharedvt_in) {
7753                 wrapper = mini_get_gsharedvt_in_sig_wrapper (sig);
7754                 add_extra_method (acfg, wrapper);
7755         }
7756         if (gsharedvt_out) {
7757                 wrapper = mini_get_gsharedvt_out_sig_wrapper (sig);
7758                 add_extra_method (acfg, wrapper);
7759         }
7760         if (interp_in) {
7761                 wrapper = mini_get_interp_in_wrapper (sig);
7762                 add_extra_method (acfg, wrapper);
7763                 //printf ("X: %s\n", mono_method_full_name (wrapper, 1));
7764         }
7765 }
7766
7767 /*
7768  * compile_method:
7769  *
7770  *   AOT compile a given method.
7771  * This function might be called by multiple threads, so it must be thread-safe.
7772  */
7773 static void
7774 compile_method (MonoAotCompile *acfg, MonoMethod *method)
7775 {
7776         MonoCompile *cfg;
7777         MonoJumpInfo *patch_info;
7778         gboolean skip;
7779         int index, depth;
7780         MonoMethod *wrapped;
7781         GTimer *jit_timer;
7782         JitFlags flags;
7783
7784         if (acfg->aot_opts.metadata_only)
7785                 return;
7786
7787         mono_acfg_lock (acfg);
7788         index = get_method_index (acfg, method);
7789         mono_acfg_unlock (acfg);
7790
7791         /* fixme: maybe we can also precompile wrapper methods */
7792         if ((method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
7793                 (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
7794                 (method->flags & METHOD_ATTRIBUTE_ABSTRACT)) {
7795                 //printf ("Skip (impossible): %s\n", mono_method_full_name (method, TRUE));
7796                 return;
7797         }
7798
7799         if (method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL)
7800                 return;
7801
7802         wrapped = mono_marshal_method_from_wrapper (method);
7803         if (wrapped && (wrapped->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && wrapped->is_generic)
7804                 // FIXME: The wrapper should be generic too, but it is not
7805                 return;
7806
7807         if (method->wrapper_type == MONO_WRAPPER_COMINTEROP)
7808                 return;
7809
7810         if (acfg->aot_opts.profile_only && !method->is_inflated && !g_hash_table_lookup (acfg->profile_methods, method))
7811                 return;
7812
7813         mono_atomic_inc_i32 (&acfg->stats.mcount);
7814
7815 #if 0
7816         if (method->is_generic || mono_class_is_gtd (method->klass)) {
7817                 mono_atomic_inc_i32 (&acfg->stats.genericcount);
7818                 return;
7819         }
7820 #endif
7821
7822         //acfg->aot_opts.print_skipped_methods = TRUE;
7823
7824         /*
7825          * Since these methods are the only ones which are compiled with
7826          * AOT support, and they are not used by runtime startup/shutdown code,
7827          * the runtime will not see AOT methods during AOT compilation,so it
7828          * does not need to support them by creating a fake GOT etc.
7829          */
7830         flags = JIT_FLAG_AOT;
7831         if (mono_aot_mode_is_full (&acfg->aot_opts))
7832                 flags = (JitFlags)(flags | JIT_FLAG_FULL_AOT);
7833         if (acfg->llvm)
7834                 flags = (JitFlags)(flags | JIT_FLAG_LLVM);
7835         if (acfg->aot_opts.llvm_only)
7836                 flags = (JitFlags)(flags | JIT_FLAG_LLVM_ONLY | JIT_FLAG_EXPLICIT_NULL_CHECKS);
7837         if (acfg->aot_opts.no_direct_calls)
7838                 flags = (JitFlags)(flags | JIT_FLAG_NO_DIRECT_ICALLS);
7839         if (acfg->aot_opts.direct_pinvoke)
7840                 flags = (JitFlags)(flags | JIT_FLAG_DIRECT_PINVOKE);
7841
7842         jit_timer = mono_time_track_start ();
7843         cfg = mini_method_compile (method, acfg->opts, mono_get_root_domain (), flags, 0, index);
7844         mono_time_track_end (&mono_jit_stats.jit_time, jit_timer);
7845
7846         if (cfg->exception_type == MONO_EXCEPTION_GENERIC_SHARING_FAILED) {
7847                 if (acfg->aot_opts.print_skipped_methods)
7848                         printf ("Skip (gshared failure): %s (%s)\n", mono_method_get_full_name (method), cfg->exception_message);
7849                 mono_atomic_inc_i32 (&acfg->stats.genericcount);
7850                 return;
7851         }
7852         if (cfg->exception_type != MONO_EXCEPTION_NONE) {
7853                 /* Some instances cannot be JITted due to constraints etc. */
7854                 if (!method->is_inflated)
7855                         report_loader_error (acfg, &cfg->error, FALSE, "Unable to compile method '%s' due to: '%s'.\n", mono_method_get_full_name (method), mono_error_get_message (&cfg->error));
7856                 /* Let the exception happen at runtime */
7857                 return;
7858         }
7859
7860         if (cfg->disable_aot) {
7861                 if (acfg->aot_opts.print_skipped_methods)
7862                         printf ("Skip (disabled): %s\n", mono_method_get_full_name (method));
7863                 mono_atomic_inc_i32 (&acfg->stats.ocount);
7864                 return;
7865         }
7866         cfg->method_index = index;
7867
7868         /* Nullify patches which need no aot processing */
7869         for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
7870                 switch (patch_info->type) {
7871                 case MONO_PATCH_INFO_LABEL:
7872                 case MONO_PATCH_INFO_BB:
7873                         patch_info->type = MONO_PATCH_INFO_NONE;
7874                         break;
7875                 default:
7876                         break;
7877                 }
7878         }
7879
7880         /* Collect method->token associations from the cfg */
7881         mono_acfg_lock (acfg);
7882         g_hash_table_foreach (cfg->token_info_hash, add_token_info_hash, acfg);
7883         mono_acfg_unlock (acfg);
7884         g_hash_table_destroy (cfg->token_info_hash);
7885         cfg->token_info_hash = NULL;
7886
7887         /*
7888          * Check for absolute addresses.
7889          */
7890         skip = FALSE;
7891         for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
7892                 switch (patch_info->type) {
7893                 case MONO_PATCH_INFO_ABS:
7894                         /* unable to handle this */
7895                         skip = TRUE;
7896                         break;
7897                 default:
7898                         break;
7899                 }
7900         }
7901
7902         if (skip) {
7903                 if (acfg->aot_opts.print_skipped_methods)
7904                         printf ("Skip (abs call): %s\n", mono_method_get_full_name (method));
7905                 mono_atomic_inc_i32 (&acfg->stats.abscount);
7906                 return;
7907         }
7908
7909         /* Lock for the rest of the code */
7910         mono_acfg_lock (acfg);
7911
7912         if (cfg->gsharedvt)
7913                 acfg->stats.method_categories [METHOD_CAT_GSHAREDVT] ++;
7914         else if (cfg->gshared)
7915                 acfg->stats.method_categories [METHOD_CAT_INST] ++;
7916         else if (cfg->method->wrapper_type)
7917                 acfg->stats.method_categories [METHOD_CAT_WRAPPER] ++;
7918         else
7919                 acfg->stats.method_categories [METHOD_CAT_NORMAL] ++;
7920
7921         /*
7922          * Check for methods/klasses we can't encode.
7923          */
7924         skip = FALSE;
7925         for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
7926                 if (!can_encode_patch (acfg, patch_info))
7927                         skip = TRUE;
7928         }
7929
7930         if (skip) {
7931                 if (acfg->aot_opts.print_skipped_methods)
7932                         printf ("Skip (patches): %s\n", mono_method_get_full_name (method));
7933                 acfg->stats.ocount++;
7934                 mono_acfg_unlock (acfg);
7935                 return;
7936         }
7937
7938         if (!cfg->compile_llvm)
7939                 acfg->has_jitted_code = TRUE;
7940
7941         if (method->is_inflated && acfg->aot_opts.log_instances) {
7942                 if (acfg->instances_logfile)
7943                         fprintf (acfg->instances_logfile, "%s ### %d\n", mono_method_get_full_name (method), cfg->code_size);
7944                 else
7945                         printf ("%s ### %d\n", mono_method_get_full_name (method), cfg->code_size);
7946         }
7947
7948         /* Adds generic instances referenced by this method */
7949         /*
7950          * The depth is used to avoid infinite loops when generic virtual recursion is
7951          * encountered.
7952          */
7953         depth = GPOINTER_TO_UINT (g_hash_table_lookup (acfg->method_depth, method));
7954         if (!acfg->aot_opts.no_instances && depth < 32 && (mono_aot_mode_is_full (&acfg->aot_opts) || mono_aot_mode_is_hybrid (&acfg->aot_opts))) {
7955                 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
7956                         switch (patch_info->type) {
7957                         case MONO_PATCH_INFO_RGCTX_FETCH:
7958                         case MONO_PATCH_INFO_RGCTX_SLOT_INDEX:
7959                         case MONO_PATCH_INFO_METHOD:
7960                         case MONO_PATCH_INFO_METHOD_RGCTX: {
7961                                 MonoMethod *m = NULL;
7962
7963                                 if (patch_info->type == MONO_PATCH_INFO_RGCTX_FETCH || patch_info->type == MONO_PATCH_INFO_RGCTX_SLOT_INDEX) {
7964                                         MonoJumpInfoRgctxEntry *e = patch_info->data.rgctx_entry;
7965
7966                                         if (e->info_type == MONO_RGCTX_INFO_GENERIC_METHOD_CODE)
7967                                                 m = e->data->data.method;
7968                                 } else {
7969                                         m = patch_info->data.method;
7970                                 }
7971
7972                                 if (!m)
7973                                         break;
7974                                 if (m->is_inflated && (mono_aot_mode_is_full (&acfg->aot_opts) || mono_aot_mode_is_hybrid (&acfg->aot_opts))) {
7975                                         if (!(mono_class_generic_sharing_enabled (m->klass) &&
7976                                                   mono_method_is_generic_sharable_full (m, FALSE, FALSE, FALSE)) &&
7977                                                 (!method_has_type_vars (m) || mono_method_is_generic_sharable_full (m, TRUE, TRUE, FALSE))) {
7978                                                 if (m->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) {
7979                                                         if (mono_aot_mode_is_full (&acfg->aot_opts) && !method_has_type_vars (m))
7980                                                                 add_extra_method_with_depth (acfg, mono_marshal_get_native_wrapper (m, TRUE, TRUE), depth + 1);
7981                                                 } else {
7982                                                         add_extra_method_with_depth (acfg, m, depth + 1);
7983                                                         add_types_from_method_header (acfg, m);
7984                                                 }
7985                                         }
7986                                         add_generic_class_with_depth (acfg, m->klass, depth + 5, "method");
7987                                 }
7988                                 if (m->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED) {
7989                                         WrapperInfo *info = mono_marshal_get_wrapper_info (m);
7990
7991                                         if (info && info->subtype == WRAPPER_SUBTYPE_ELEMENT_ADDR)
7992                                                 add_extra_method_with_depth (acfg, m, depth + 1);
7993                                 }
7994                                 break;
7995                         }
7996                         case MONO_PATCH_INFO_VTABLE: {
7997                                 MonoClass *klass = patch_info->data.klass;
7998
7999                                 if (mono_class_is_ginst (klass) && !mini_class_is_generic_sharable (klass))
8000                                         add_generic_class_with_depth (acfg, klass, depth + 5, "vtable");
8001                                 break;
8002                         }
8003                         case MONO_PATCH_INFO_SFLDA: {
8004                                 MonoClass *klass = patch_info->data.field->parent;
8005
8006                                 /* The .cctor needs to run at runtime. */
8007                                 if (mono_class_is_ginst (klass) && !mono_generic_context_is_sharable_full (&mono_class_get_generic_class (klass)->context, FALSE, FALSE) && mono_class_get_cctor (klass))
8008                                         add_extra_method_with_depth (acfg, mono_class_get_cctor (klass), depth + 1);
8009                                 break;
8010                         }
8011                         default:
8012                                 break;
8013                         }
8014                 }
8015         }
8016
8017         /* Determine whenever the method has GOT slots */
8018         for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
8019                 switch (patch_info->type) {
8020                 case MONO_PATCH_INFO_GOT_OFFSET:
8021                 case MONO_PATCH_INFO_NONE:
8022                 case MONO_PATCH_INFO_GC_CARD_TABLE_ADDR:
8023                 case MONO_PATCH_INFO_GC_NURSERY_START:
8024                 case MONO_PATCH_INFO_GC_NURSERY_BITS:
8025                         break;
8026                 case MONO_PATCH_INFO_IMAGE:
8027                         /* The assembly is stored in GOT slot 0 */
8028                         if (patch_info->data.image != acfg->image)
8029                                 cfg->has_got_slots = TRUE;
8030                         break;
8031                 default:
8032                         if (!is_plt_patch (patch_info) || (cfg->compile_llvm && acfg->aot_opts.llvm_only))
8033                                 cfg->has_got_slots = TRUE;
8034                         break;
8035                 }
8036         }
8037
8038         if (!cfg->has_got_slots)
8039                 mono_atomic_inc_i32 (&acfg->stats.methods_without_got_slots);
8040
8041         /* Add gsharedvt wrappers for signatures used by the method */
8042         if (acfg->aot_opts.llvm_only) {
8043                 GSList *l;
8044
8045                 if (!cfg->method->wrapper_type || cfg->method->wrapper_type == MONO_WRAPPER_DELEGATE_INVOKE)
8046                         /* These only need out wrappers */
8047                         add_gsharedvt_wrappers (acfg, mono_method_signature (cfg->method), FALSE, TRUE, FALSE);
8048
8049                 for (l = cfg->signatures; l; l = l->next) {
8050                         MonoMethodSignature *sig = mono_metadata_signature_dup ((MonoMethodSignature*)l->data);
8051
8052                         /* These only need in wrappers */
8053                         add_gsharedvt_wrappers (acfg, sig, TRUE, FALSE, FALSE);
8054                 }
8055         } else if (mono_aot_mode_is_full (&acfg->aot_opts) && mono_aot_mode_is_interp (&acfg->aot_opts)) {
8056                 /* The interpreter uses these wrappers to call aot-ed code */
8057                 if (!cfg->method->wrapper_type || cfg->method->wrapper_type == MONO_WRAPPER_DELEGATE_INVOKE)
8058                         add_gsharedvt_wrappers (acfg, mono_method_signature (cfg->method), FALSE, TRUE, TRUE);
8059         }
8060
8061         /*
8062          * FIXME: Instead of this mess, allocate the patches from the aot mempool.
8063          */
8064         /* Make a copy of the patch info which is in the mempool */
8065         {
8066                 MonoJumpInfo *patches = NULL, *patches_end = NULL;
8067
8068                 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
8069                         MonoJumpInfo *new_patch_info = mono_patch_info_dup_mp (acfg->mempool, patch_info);
8070
8071                         if (!patches)
8072                                 patches = new_patch_info;
8073                         else
8074                                 patches_end->next = new_patch_info;
8075                         patches_end = new_patch_info;
8076                 }
8077                 cfg->patch_info = patches;
8078         }
8079         /* Make a copy of the unwind info */
8080         {
8081                 GSList *l, *unwind_ops;
8082                 MonoUnwindOp *op;
8083
8084                 unwind_ops = NULL;
8085                 for (l = cfg->unwind_ops; l; l = l->next) {
8086                         op = (MonoUnwindOp *)mono_mempool_alloc (acfg->mempool, sizeof (MonoUnwindOp));
8087                         memcpy (op, l->data, sizeof (MonoUnwindOp));
8088                         unwind_ops = g_slist_prepend_mempool (acfg->mempool, unwind_ops, op);
8089                 }
8090                 cfg->unwind_ops = g_slist_reverse (unwind_ops);
8091         }
8092         /* Make a copy of the argument/local info */
8093         {
8094                 ERROR_DECL (error);
8095                 MonoInst **args, **locals;
8096                 MonoMethodSignature *sig;
8097                 MonoMethodHeader *header;
8098                 int i;
8099
8100                 sig = mono_method_signature (method);
8101                 args = (MonoInst **)mono_mempool_alloc (acfg->mempool, sizeof (MonoInst*) * (sig->param_count + sig->hasthis));
8102                 for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
8103                         args [i] = (MonoInst *)mono_mempool_alloc (acfg->mempool, sizeof (MonoInst));
8104                         memcpy (args [i], cfg->args [i], sizeof (MonoInst));
8105                 }
8106                 cfg->args = args;
8107
8108                 header = mono_method_get_header_checked (method, error);
8109                 mono_error_assert_ok (error); /* FIXME don't swallow the error */
8110                 locals = (MonoInst **)mono_mempool_alloc (acfg->mempool, sizeof (MonoInst*) * header->num_locals);
8111                 for (i = 0; i < header->num_locals; ++i) {
8112                         locals [i] = (MonoInst *)mono_mempool_alloc (acfg->mempool, sizeof (MonoInst));
8113                         memcpy (locals [i], cfg->locals [i], sizeof (MonoInst));
8114                 }
8115                 mono_metadata_free_mh (header);
8116                 cfg->locals = locals;
8117         }
8118
8119         /* Free some fields used by cfg to conserve memory */
8120         mono_empty_compile (cfg);
8121
8122         //printf ("Compile:           %s\n", mono_method_full_name (method, TRUE));
8123
8124         while (index >= acfg->cfgs_size) {
8125                 MonoCompile **new_cfgs;
8126                 int new_size;
8127
8128                 new_size = acfg->cfgs_size * 2;
8129                 new_cfgs = g_new0 (MonoCompile*, new_size);
8130                 memcpy (new_cfgs, acfg->cfgs, sizeof (MonoCompile*) * acfg->cfgs_size);
8131                 g_free (acfg->cfgs);
8132                 acfg->cfgs = new_cfgs;
8133                 acfg->cfgs_size = new_size;
8134         }
8135         acfg->cfgs [index] = cfg;
8136
8137         g_hash_table_insert (acfg->method_to_cfg, cfg->orig_method, cfg);
8138
8139         /* Update global stats while holding a lock. */
8140         mono_update_jit_stats (cfg);
8141
8142         /*
8143         if (cfg->orig_method->wrapper_type)
8144                 g_ptr_array_add (acfg->extra_methods, cfg->orig_method);
8145         */
8146
8147         mono_acfg_unlock (acfg);
8148
8149         mono_atomic_inc_i32 (&acfg->stats.ccount);
8150 }
8151
8152 static mono_thread_start_return_t WINAPI
8153 compile_thread_main (gpointer user_data)
8154 {
8155         MonoAotCompile *acfg = ((MonoAotCompile **)user_data) [0];
8156         GPtrArray *methods = ((GPtrArray **)user_data) [1];
8157         int i;
8158
8159         ERROR_DECL (error);
8160         MonoInternalThread *internal = mono_thread_internal_current ();
8161         MonoString *str = mono_string_new_checked (mono_domain_get (), "AOT compiler", error);
8162         mono_error_assert_ok (error);
8163         mono_thread_set_name_internal (internal, str, TRUE, FALSE, error);
8164         mono_error_assert_ok (error);
8165
8166         for (i = 0; i < methods->len; ++i)
8167                 compile_method (acfg, (MonoMethod *)g_ptr_array_index (methods, i));
8168
8169         return 0;
8170 }
8171
8172 /* Used by the LLVM backend */
8173 guint32
8174 mono_aot_get_got_offset (MonoJumpInfo *ji)
8175 {
8176         return get_got_offset (llvm_acfg, TRUE, ji);
8177 }
8178
8179 /*
8180  * mono_aot_is_shared_got_offset:
8181  *
8182  *   Return whenever OFFSET refers to a GOT slot which is preinitialized
8183  * when the AOT image is loaded.
8184  */
8185 gboolean
8186 mono_aot_is_shared_got_offset (int offset)
8187 {
8188         return offset < llvm_acfg->nshared_got_entries;
8189 }
8190
8191 char*
8192 mono_aot_get_method_name (MonoCompile *cfg)
8193 {
8194         if (llvm_acfg->aot_opts.static_link)
8195                 /* Include the assembly name too to avoid duplicate symbol errors */
8196                 return g_strdup_printf ("%s_%s", llvm_acfg->assembly_name_sym, get_debug_sym (cfg->orig_method, "", llvm_acfg->method_label_hash));
8197         else
8198                 return get_debug_sym (cfg->orig_method, "", llvm_acfg->method_label_hash);
8199 }
8200
8201 /*
8202  * mono_aot_is_linkonce_method:
8203  *
8204  *   Return whenever METHOD should be emitted with linkonce linkage,
8205  * eliminating duplicate copies when compiling in static mode.
8206  */
8207 gboolean
8208 mono_aot_is_linkonce_method (MonoMethod *method)
8209 {
8210         return FALSE;
8211 #if 0
8212         WrapperInfo *info;
8213
8214         // FIXME: Add more cases
8215         if (method->wrapper_type != MONO_WRAPPER_UNKNOWN)
8216                 return FALSE;
8217         info = mono_marshal_get_wrapper_info (method);
8218         if ((info && (info->subtype == WRAPPER_SUBTYPE_GSHAREDVT_IN_SIG || info->subtype == WRAPPER_SUBTYPE_GSHAREDVT_OUT_SIG)))
8219                 return TRUE;
8220         return FALSE;
8221 #endif
8222 }
8223
8224 static gboolean
8225 append_mangled_type (GString *s, MonoType *t)
8226 {
8227         if (t->byref)
8228                 g_string_append_printf (s, "b");
8229         switch (t->type) {
8230         case MONO_TYPE_VOID:
8231                 g_string_append_printf (s, "void_");
8232                 break;
8233         case MONO_TYPE_I1:
8234                 g_string_append_printf (s, "i1");
8235                 break;
8236         case MONO_TYPE_U1:
8237                 g_string_append_printf (s, "u1");
8238                 break;
8239         case MONO_TYPE_I2:
8240                 g_string_append_printf (s, "i2");
8241                 break;
8242         case MONO_TYPE_U2:
8243                 g_string_append_printf (s, "u2");
8244                 break;
8245         case MONO_TYPE_I4:
8246                 g_string_append_printf (s, "i4");
8247                 break;
8248         case MONO_TYPE_U4:
8249                 g_string_append_printf (s, "u4");
8250                 break;
8251         case MONO_TYPE_I8:
8252                 g_string_append_printf (s, "i8");
8253                 break;
8254         case MONO_TYPE_U8:
8255                 g_string_append_printf (s, "u8");
8256                 break;
8257         case MONO_TYPE_I:
8258                 g_string_append_printf (s, "ii");
8259                 break;
8260         case MONO_TYPE_U:
8261                 g_string_append_printf (s, "ui");
8262                 break;
8263         case MONO_TYPE_R4:
8264                 g_string_append_printf (s, "fl");
8265                 break;
8266         case MONO_TYPE_R8:
8267                 g_string_append_printf (s, "do");
8268                 break;
8269         default: {
8270                 char *fullname = mono_type_full_name (t);
8271                 GString *temp;
8272                 char *temps;
8273                 int i, len;
8274
8275                 /*
8276                  * Have to create a mangled name which is:
8277                  * - a valid symbol
8278                  * - unique
8279                  */
8280                 temp = g_string_new ("");
8281                 len = strlen (fullname);
8282                 for (i = 0; i < len; ++i) {
8283                         char c = fullname [i];
8284                         if (isalnum (c)) {
8285                                 g_string_append_c (temp, c);
8286                         } else if (c == '_') {
8287                                 g_string_append_c (temp, '_');
8288                                 g_string_append_c (temp, '_');
8289                         } else {
8290                                 g_string_append_c (temp, '_');
8291                                 g_string_append_printf (temp, "%x", (int)c);
8292                         }
8293                 }
8294                 temps = g_string_free (temp, FALSE);
8295                 /* Include the length to avoid different length type names aliasing each other */
8296                 g_string_append_printf (s, "cl%x_%s_", strlen (temps), temps);
8297                 g_free (temps);
8298         }
8299         }
8300         if (t->attrs)
8301                 g_string_append_printf (s, "_attrs_%d", t->attrs);
8302         return TRUE;
8303 }
8304
8305 static gboolean
8306 append_mangled_signature (GString *s, MonoMethodSignature *sig)
8307 {
8308         int i;
8309         gboolean supported;
8310
8311         supported = append_mangled_type (s, sig->ret);
8312         if (!supported)
8313                 return FALSE;
8314         if (sig->hasthis)
8315                 g_string_append_printf (s, "this_");
8316         if (sig->pinvoke)
8317                 g_string_append_printf (s, "pinvoke_");
8318         for (i = 0; i < sig->param_count; ++i) {
8319                 supported = append_mangled_type (s, sig->params [i]);
8320                 if (!supported)
8321                         return FALSE;
8322         }
8323
8324         return TRUE;
8325 }
8326
8327 static void
8328 append_mangled_wrapper_type (GString *s, guint32 wrapper_type)
8329 {
8330         const char *label;
8331
8332         switch (wrapper_type) {
8333         case MONO_WRAPPER_REMOTING_INVOKE:
8334                 label = "remoting_invoke";
8335                 break;
8336         case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK:
8337                 label = "remoting_invoke_check";
8338                 break;
8339         case MONO_WRAPPER_XDOMAIN_INVOKE:
8340                 label = "remoting_invoke_xdomain";
8341                 break;
8342         case MONO_WRAPPER_PROXY_ISINST:
8343                 label = "proxy_isinst";
8344                 break;
8345         case MONO_WRAPPER_LDFLD:
8346                 label = "ldfld";
8347                 break;
8348         case MONO_WRAPPER_LDFLDA:
8349                 label = "ldflda";
8350                 break;
8351         case MONO_WRAPPER_STFLD:
8352                 label = "stfld";
8353                 break;
8354         case MONO_WRAPPER_ALLOC:
8355                 label = "alloc";
8356                 break;
8357         case MONO_WRAPPER_WRITE_BARRIER:
8358                 label = "write_barrier";
8359                 break;
8360         case MONO_WRAPPER_STELEMREF:
8361                 label = "stelemref";
8362                 break;
8363         case MONO_WRAPPER_UNKNOWN:
8364                 label = "unknown";
8365                 break;
8366         case MONO_WRAPPER_MANAGED_TO_NATIVE:
8367                 label = "man2native";
8368                 break;
8369         case MONO_WRAPPER_SYNCHRONIZED:
8370                 label = "synch";
8371                 break;
8372         case MONO_WRAPPER_MANAGED_TO_MANAGED:
8373                 label = "man2man";
8374                 break;
8375         case MONO_WRAPPER_CASTCLASS:
8376                 label = "castclass";
8377                 break;
8378         case MONO_WRAPPER_RUNTIME_INVOKE:
8379                 label = "run_invoke";
8380                 break;
8381         case MONO_WRAPPER_DELEGATE_INVOKE:
8382                 label = "del_inv";
8383                 break;
8384         case MONO_WRAPPER_DELEGATE_BEGIN_INVOKE:
8385                 label = "del_beg_inv";
8386                 break;
8387         case MONO_WRAPPER_DELEGATE_END_INVOKE:
8388                 label = "del_end_inv";
8389                 break;
8390         case MONO_WRAPPER_NATIVE_TO_MANAGED:
8391                 label = "native2man";
8392                 break;
8393         default:
8394                 g_assert_not_reached ();
8395         }
8396
8397         g_string_append_printf (s, "%s_", label);
8398 }
8399
8400 static void
8401 append_mangled_wrapper_subtype (GString *s, WrapperSubtype subtype)
8402 {
8403         const char *label;
8404
8405         switch (subtype)
8406         {
8407         case WRAPPER_SUBTYPE_NONE:
8408                 return;
8409         case WRAPPER_SUBTYPE_ELEMENT_ADDR:
8410                 label = "elem_addr";
8411                 break;
8412         case WRAPPER_SUBTYPE_STRING_CTOR:
8413                 label = "str_ctor";
8414                 break;
8415         case WRAPPER_SUBTYPE_VIRTUAL_STELEMREF:
8416                 label = "virt_stelem";
8417                 break;
8418         case WRAPPER_SUBTYPE_FAST_MONITOR_ENTER:
8419                 label = "fast_mon_enter";
8420                 break;
8421         case WRAPPER_SUBTYPE_FAST_MONITOR_ENTER_V4:
8422                 label = "fast_mon_enter_4";
8423                 break;
8424         case WRAPPER_SUBTYPE_FAST_MONITOR_EXIT:
8425                 label = "fast_monitor_exit";
8426                 break;
8427         case WRAPPER_SUBTYPE_PTR_TO_STRUCTURE:
8428                 label = "ptr2struct";
8429                 break;
8430         case WRAPPER_SUBTYPE_STRUCTURE_TO_PTR:
8431                 label = "struct2ptr";
8432                 break;
8433         case WRAPPER_SUBTYPE_CASTCLASS_WITH_CACHE:
8434                 label = "castclass_w_cache";
8435                 break;
8436         case WRAPPER_SUBTYPE_ISINST_WITH_CACHE:
8437                 label = "isinst_w_cache";
8438                 break;
8439         case WRAPPER_SUBTYPE_RUNTIME_INVOKE_NORMAL:
8440                 label = "run_inv_norm";
8441                 break;
8442         case WRAPPER_SUBTYPE_RUNTIME_INVOKE_DYNAMIC:
8443                 label = "run_inv_dyn";
8444                 break;
8445         case WRAPPER_SUBTYPE_RUNTIME_INVOKE_DIRECT:
8446                 label = "run_inv_dir";
8447                 break;
8448         case WRAPPER_SUBTYPE_RUNTIME_INVOKE_VIRTUAL:
8449                 label = "run_inv_vir";
8450                 break;
8451         case WRAPPER_SUBTYPE_ICALL_WRAPPER:
8452                 label = "icall";
8453                 break;
8454         case WRAPPER_SUBTYPE_NATIVE_FUNC_AOT:
8455                 label = "native_func_aot";
8456                 break;
8457         case WRAPPER_SUBTYPE_PINVOKE:
8458                 label = "pinvoke";
8459                 break;
8460         case WRAPPER_SUBTYPE_SYNCHRONIZED_INNER:
8461                 label = "synch_inner";
8462                 break;
8463         case WRAPPER_SUBTYPE_GSHAREDVT_IN:
8464                 label = "gshared_in";
8465                 break;
8466         case WRAPPER_SUBTYPE_GSHAREDVT_OUT:
8467                 label = "gshared_out";
8468                 break;
8469         case WRAPPER_SUBTYPE_ARRAY_ACCESSOR:
8470                 label = "array_acc";
8471                 break;
8472         case WRAPPER_SUBTYPE_GENERIC_ARRAY_HELPER:
8473                 label = "generic_arry_help";
8474                 break;
8475         case WRAPPER_SUBTYPE_DELEGATE_INVOKE_VIRTUAL:
8476                 label = "del_inv_virt";
8477                 break;
8478         case WRAPPER_SUBTYPE_DELEGATE_INVOKE_BOUND:
8479                 label = "del_inv_bound";
8480                 break;
8481         case WRAPPER_SUBTYPE_INTERP_IN:
8482                 label = "interp_in";
8483                 break;
8484         case WRAPPER_SUBTYPE_GSHAREDVT_IN_SIG:
8485                 label = "gsharedvt_in_sig";
8486                 break;
8487         case WRAPPER_SUBTYPE_GSHAREDVT_OUT_SIG:
8488                 label = "gsharedvt_out_sig";
8489                 break;
8490         default:
8491                 g_assert_not_reached ();
8492         }
8493
8494         g_string_append_printf (s, "%s_", label);
8495 }
8496
8497 static char *
8498 sanitize_mangled_string (const char *input)
8499 {
8500         GString *s = g_string_new ("");
8501
8502         for (int i=0; input [i] != '\0'; i++) {
8503                 char c = input [i];
8504                 switch (c) {
8505                 case '.':
8506                         g_string_append (s, "_dot_");
8507                         break;
8508                 case ' ':
8509                         g_string_append (s, "_");
8510                         break;
8511                 case '`':
8512                         g_string_append (s, "_bt_");
8513                         break;
8514                 case '<':
8515                         g_string_append (s, "_le_");
8516                         break;
8517                 case '>':
8518                         g_string_append (s, "_gt_");
8519                         break;
8520                 case '/':
8521                         g_string_append (s, "_sl_");
8522                         break;
8523                 case '[':
8524                         g_string_append (s, "_lbrack_");
8525                         break;
8526                 case ']':
8527                         g_string_append (s, "_rbrack_");
8528                         break;
8529                 case '(':
8530                         g_string_append (s, "_lparen_");
8531                         break;
8532                 case '-':
8533                         g_string_append (s, "_dash_");
8534                         break;
8535                 case ')':
8536                         g_string_append (s, "_rparen_");
8537                         break;
8538                 case ',':
8539                         g_string_append (s, "_comma_");
8540                         break;
8541                 case ':':
8542                         g_string_append (s, "_colon_");
8543                         break;
8544                 default:
8545                         g_string_append_c (s, c);
8546                 }
8547         }
8548
8549         return g_string_free (s, FALSE);
8550 }
8551
8552 static gboolean
8553 append_mangled_klass (GString *s, MonoClass *klass)
8554 {
8555         char *klass_desc = mono_class_full_name (klass);
8556         g_string_append_printf (s, "_%s_%s_", m_class_get_name_space (klass), klass_desc);
8557         g_free (klass_desc);
8558
8559         // Success
8560         return TRUE;
8561 }
8562
8563 static gboolean
8564 append_mangled_method (GString *s, MonoMethod *method);
8565
8566 static gboolean
8567 append_mangled_wrapper (GString *s, MonoMethod *method)
8568 {
8569         gboolean success = TRUE;
8570         WrapperInfo *info = mono_marshal_get_wrapper_info (method);
8571         g_string_append_printf (s, "wrapper_");
8572         g_string_append_printf (s, "%s_", m_class_get_image (method->klass)->assembly->aname.name);
8573
8574         append_mangled_wrapper_type (s, method->wrapper_type);
8575
8576         switch (method->wrapper_type) {
8577         case MONO_WRAPPER_REMOTING_INVOKE:
8578         case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK:
8579         case MONO_WRAPPER_XDOMAIN_INVOKE: {
8580                 MonoMethod *m = mono_marshal_method_from_wrapper (method);
8581                 g_assert (m);
8582                 success = success && append_mangled_method (s, m);
8583                 break;
8584         }
8585         case MONO_WRAPPER_PROXY_ISINST:
8586         case MONO_WRAPPER_LDFLD:
8587         case MONO_WRAPPER_LDFLDA:
8588         case MONO_WRAPPER_STFLD: {
8589                 g_assert (info);
8590                 success = success && append_mangled_klass (s, info->d.proxy.klass);
8591                 break;
8592         }
8593         case MONO_WRAPPER_ALLOC: {
8594                 /* The GC name is saved once in MonoAotFileInfo */
8595                 g_assert (info->d.alloc.alloc_type != -1);
8596                 g_string_append_printf (s, "%d_", info->d.alloc.alloc_type);
8597                 // SlowAlloc, etc
8598                 g_string_append_printf (s, "%s_", method->name);
8599                 break;
8600         }
8601         case MONO_WRAPPER_WRITE_BARRIER: {
8602                 g_string_append_printf (s, "%s_", method->name);
8603                 break;
8604         }
8605         case MONO_WRAPPER_STELEMREF: {
8606                 append_mangled_wrapper_subtype (s, info->subtype);
8607                 if (info->subtype == WRAPPER_SUBTYPE_VIRTUAL_STELEMREF)
8608                         g_string_append_printf (s, "%d", info->d.virtual_stelemref.kind);
8609                 break;
8610         }
8611         case MONO_WRAPPER_UNKNOWN: {
8612                 append_mangled_wrapper_subtype (s, info->subtype);
8613                 if (info->subtype == WRAPPER_SUBTYPE_PTR_TO_STRUCTURE ||
8614                         info->subtype == WRAPPER_SUBTYPE_STRUCTURE_TO_PTR)
8615                         success = success && append_mangled_klass (s, method->klass);
8616                 else if (info->subtype == WRAPPER_SUBTYPE_SYNCHRONIZED_INNER)
8617                         success = success && append_mangled_method (s, info->d.synchronized_inner.method);
8618                 else if (info->subtype == WRAPPER_SUBTYPE_ARRAY_ACCESSOR)
8619                         success = success && append_mangled_method (s, info->d.array_accessor.method);
8620                 else if (info->subtype == WRAPPER_SUBTYPE_INTERP_IN)
8621                         append_mangled_signature (s, info->d.interp_in.sig);
8622                 else if (info->subtype == WRAPPER_SUBTYPE_GSHAREDVT_IN_SIG)
8623                         append_mangled_signature (s, info->d.gsharedvt.sig);
8624                 else if (info->subtype == WRAPPER_SUBTYPE_GSHAREDVT_OUT_SIG)
8625                         append_mangled_signature (s, info->d.gsharedvt.sig);
8626                 break;
8627         }
8628         case MONO_WRAPPER_MANAGED_TO_NATIVE: {
8629                 append_mangled_wrapper_subtype (s, info->subtype);
8630                 if (info->subtype == WRAPPER_SUBTYPE_ICALL_WRAPPER) {
8631                         g_string_append_printf (s, "%s", method->name);
8632                 } else if (info->subtype == WRAPPER_SUBTYPE_NATIVE_FUNC_AOT) {
8633                         success = success && append_mangled_method (s, info->d.managed_to_native.method);
8634                 } else {
8635                         g_assert (info->subtype == WRAPPER_SUBTYPE_NONE || info->subtype == WRAPPER_SUBTYPE_PINVOKE);
8636                         success = success && append_mangled_method (s, info->d.managed_to_native.method);
8637                 }
8638                 break;
8639         }
8640         case MONO_WRAPPER_SYNCHRONIZED: {
8641                 MonoMethod *m;
8642
8643                 m = mono_marshal_method_from_wrapper (method);
8644                 g_assert (m);
8645                 g_assert (m != method);
8646                 success = success && append_mangled_method (s, m);
8647                 break;
8648         }
8649         case MONO_WRAPPER_MANAGED_TO_MANAGED: {
8650                 append_mangled_wrapper_subtype (s, info->subtype);
8651
8652                 if (info->subtype == WRAPPER_SUBTYPE_ELEMENT_ADDR) {
8653                         g_string_append_printf (s, "%d_", info->d.element_addr.rank);
8654                         g_string_append_printf (s, "%d_", info->d.element_addr.elem_size);
8655                 } else if (info->subtype == WRAPPER_SUBTYPE_STRING_CTOR) {
8656                         success = success && append_mangled_method (s, info->d.string_ctor.method);
8657                 } else if (info->subtype == WRAPPER_SUBTYPE_GENERIC_ARRAY_HELPER) {
8658                         success = success && append_mangled_method (s, info->d.generic_array_helper.method);
8659                 } else {
8660                         success = FALSE;
8661                 }
8662                 break;
8663         }
8664         case MONO_WRAPPER_CASTCLASS: {
8665                 append_mangled_wrapper_subtype (s, info->subtype);
8666                 break;
8667         }
8668         case MONO_WRAPPER_RUNTIME_INVOKE: {
8669                 append_mangled_wrapper_subtype (s, info->subtype);
8670                 if (info->subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_DIRECT || info->subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_VIRTUAL)
8671                         success = success && append_mangled_method (s, info->d.runtime_invoke.method);
8672                 else if (info->subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_NORMAL)
8673                         success = success && append_mangled_signature (s, info->d.runtime_invoke.sig);
8674                 break;
8675         }
8676         case MONO_WRAPPER_DELEGATE_INVOKE:
8677         case MONO_WRAPPER_DELEGATE_BEGIN_INVOKE:
8678         case MONO_WRAPPER_DELEGATE_END_INVOKE: {
8679                 if (method->is_inflated) {
8680                         /* These wrappers are identified by their class */
8681                         g_string_append_printf (s, "i_");
8682                         success = success && append_mangled_klass (s, method->klass);
8683                 } else {
8684                         WrapperInfo *info = mono_marshal_get_wrapper_info (method);
8685
8686                         g_string_append_printf (s, "u_");
8687                         if (method->wrapper_type == MONO_WRAPPER_DELEGATE_INVOKE)
8688                                 append_mangled_wrapper_subtype (s, info->subtype);
8689                         g_string_append_printf (s, "u_sigstart");
8690                 }
8691                 break;
8692         }
8693         case MONO_WRAPPER_NATIVE_TO_MANAGED: {
8694                 g_assert (info);
8695                 success = success && append_mangled_method (s, info->d.native_to_managed.method);
8696                 success = success && append_mangled_klass (s, method->klass);
8697                 break;
8698         }
8699         default:
8700                 g_assert_not_reached ();
8701         }
8702         return success && append_mangled_signature (s, mono_method_signature (method));
8703 }
8704
8705 static void
8706 append_mangled_ginst (GString *str, MonoGenericInst *ginst)
8707 {
8708         int i;
8709
8710         for (i = 0; i < ginst->type_argc; ++i) {
8711                 if (i > 0)
8712                         g_string_append (str, ", ");
8713                 MonoType *type = ginst->type_argv [i];
8714                 switch (type->type) {
8715                 case MONO_TYPE_VAR:
8716                 case MONO_TYPE_MVAR: {
8717                         MonoType *constraint = NULL;
8718                         if (type->data.generic_param)
8719                                 constraint = type->data.generic_param->gshared_constraint;
8720                         if (constraint) {
8721                                 g_assert (constraint->type != MONO_TYPE_VAR && constraint->type != MONO_TYPE_MVAR);
8722                                 g_string_append (str, "gshared:");
8723                                 mono_type_get_desc (str, constraint, TRUE);
8724                                 break;
8725                         }
8726                         // Else falls through to common case
8727                 }
8728                 default:
8729                         mono_type_get_desc (str, type, TRUE);
8730                 }
8731         }
8732 }
8733
8734 static void
8735 append_mangled_context (GString *str, MonoGenericContext *context)
8736 {
8737         GString *res = g_string_new ("");
8738
8739         g_string_append_printf (res, "gens_");
8740         g_string_append (res, "00");
8741
8742         gboolean good = context->class_inst && context->class_inst->type_argc > 0;
8743         good = good || (context->method_inst && context->method_inst->type_argc > 0);
8744         g_assert (good);
8745
8746         if (context->class_inst)
8747                 append_mangled_ginst (res, context->class_inst);
8748         if (context->method_inst) {
8749                 if (context->class_inst)
8750                         g_string_append (res, "11");
8751                 append_mangled_ginst (res, context->method_inst);
8752         }
8753         g_string_append_printf (str, "gens_%s", res->str);
8754         g_free (res);
8755 }
8756
8757 static gboolean
8758 append_mangled_method (GString *s, MonoMethod *method)
8759 {
8760         if (method->wrapper_type)
8761                 return append_mangled_wrapper (s, method);
8762
8763         if (method->is_inflated) {
8764                 g_string_append_printf (s, "inflated_");
8765                 MonoMethodInflated *imethod = (MonoMethodInflated*) method;
8766                 g_assert (imethod->context.class_inst != NULL || imethod->context.method_inst != NULL);
8767
8768                 append_mangled_context (s, &imethod->context);
8769                 g_string_append_printf (s, "_declared_by_");
8770                 append_mangled_method (s, imethod->declaring);
8771         } else if (method->is_generic) {
8772                 g_string_append_printf (s, "%s_", m_class_get_image (method->klass)->assembly->aname.name);
8773
8774                 g_string_append_printf (s, "generic_");
8775                 append_mangled_klass (s, method->klass);
8776                 g_string_append_printf (s, "_%s_", method->name);
8777
8778                 MonoGenericContainer *container = mono_method_get_generic_container (method);
8779                 g_string_append_printf (s, "_%s");
8780                 append_mangled_context (s, &container->context);
8781
8782                 return append_mangled_signature (s, mono_method_signature (method));
8783         } else {
8784                 g_string_append_printf (s, "_");
8785                 append_mangled_klass (s, method->klass);
8786                 g_string_append_printf (s, "_%s_", method->name);
8787                 if (!append_mangled_signature (s, mono_method_signature (method))) {
8788                         g_string_free (s, TRUE);
8789                         return FALSE;
8790                 }
8791         }
8792
8793         return TRUE;
8794 }
8795
8796 /*
8797  * mono_aot_get_mangled_method_name:
8798  *
8799  *   Return a unique mangled name for METHOD, or NULL.
8800  */
8801 char*
8802 mono_aot_get_mangled_method_name (MonoMethod *method)
8803 {
8804         // FIXME: use static cache (mempool?)
8805         // We call this a *lot*
8806
8807         GString *s = g_string_new ("aot_");
8808         if (!append_mangled_method (s, method)) {
8809                 g_string_free (s, TRUE);
8810                 return NULL;
8811         } else {
8812                 char *out = g_string_free (s, FALSE);
8813                 // Scrub method and class names
8814                 char *cleaned = sanitize_mangled_string (out);
8815                 g_free (out);
8816                 return cleaned;
8817         }
8818 }
8819
8820 gboolean
8821 mono_aot_is_direct_callable (MonoJumpInfo *patch_info)
8822 {
8823         return is_direct_callable (llvm_acfg, NULL, patch_info);
8824 }
8825
8826 void
8827 mono_aot_mark_unused_llvm_plt_entry (MonoJumpInfo *patch_info)
8828 {
8829         MonoPltEntry *plt_entry;
8830
8831         plt_entry = get_plt_entry (llvm_acfg, patch_info);
8832         plt_entry->llvm_used = FALSE;
8833 }
8834
8835 char*
8836 mono_aot_get_direct_call_symbol (MonoJumpInfoType type, gconstpointer data)
8837 {
8838         const char *sym = NULL;
8839
8840         if (llvm_acfg->aot_opts.direct_icalls) {
8841                 if (type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
8842                         /* Call to a C function implementing a jit icall */
8843                         sym = mono_lookup_jit_icall_symbol ((const char *)data);
8844                 } else if (type == MONO_PATCH_INFO_ICALL_ADDR_CALL) {
8845                         MonoMethod *method = (MonoMethod *)data;
8846                         if (!(method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL))
8847                                 sym = mono_lookup_icall_symbol (method);
8848                         else if (llvm_acfg->aot_opts.direct_pinvoke)
8849                                 sym = get_pinvoke_import (llvm_acfg, method);
8850                 }
8851                 if (sym)
8852                         return g_strdup (sym);
8853         }
8854         return NULL;
8855 }
8856
8857 char*
8858 mono_aot_get_plt_symbol (MonoJumpInfoType type, gconstpointer data)
8859 {
8860         MonoJumpInfo *ji = (MonoJumpInfo *)mono_mempool_alloc (llvm_acfg->mempool, sizeof (MonoJumpInfo));
8861         MonoPltEntry *plt_entry;
8862         const char *sym = NULL;
8863
8864         ji->type = type;
8865         ji->data.target = data;
8866
8867         if (!can_encode_patch (llvm_acfg, ji))
8868                 return NULL;
8869
8870         if (llvm_acfg->aot_opts.direct_icalls) {
8871                 if (type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
8872                         /* Call to a C function implementing a jit icall */
8873                         sym = mono_lookup_jit_icall_symbol ((const char *)data);
8874                 } else if (type == MONO_PATCH_INFO_ICALL_ADDR_CALL) {
8875                         MonoMethod *method = (MonoMethod *)data;
8876                         if (!(method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL))
8877                                 sym = mono_lookup_icall_symbol (method);
8878                 }
8879                 if (sym)
8880                         return g_strdup (sym);
8881         }
8882
8883         plt_entry = get_plt_entry (llvm_acfg, ji);
8884         plt_entry->llvm_used = TRUE;
8885
8886 #if defined(TARGET_MACH)
8887         return g_strdup_printf (plt_entry->llvm_symbol + strlen (llvm_acfg->llvm_label_prefix));
8888 #else
8889         return g_strdup_printf (plt_entry->llvm_symbol);
8890 #endif
8891 }
8892
8893 int
8894 mono_aot_get_method_index (MonoMethod *method)
8895 {
8896         g_assert (llvm_acfg);
8897         return get_method_index (llvm_acfg, method);
8898 }
8899
8900 MonoJumpInfo*
8901 mono_aot_patch_info_dup (MonoJumpInfo* ji)
8902 {
8903         MonoJumpInfo *res;
8904
8905         mono_acfg_lock (llvm_acfg);
8906         res = mono_patch_info_dup_mp (llvm_acfg->mempool, ji);
8907         mono_acfg_unlock (llvm_acfg);
8908
8909         return res;
8910 }
8911
8912 static int
8913 execute_system (const char * command)
8914 {
8915         int status = 0;
8916
8917 #if G_HAVE_API_SUPPORT(HAVE_CLASSIC_WINAPI_SUPPORT) && defined(HOST_WIN32)
8918         // We need an extra set of quotes around the whole command to properly handle commands
8919         // with spaces since internally the command is called through "cmd /c.
8920         char * quoted_command = g_strdup_printf ("\"%s\"", command);
8921
8922         int size =  MultiByteToWideChar (CP_UTF8, 0 , quoted_command , -1, NULL , 0);
8923         wchar_t* wstr = g_malloc (sizeof (wchar_t) * size);
8924         MultiByteToWideChar (CP_UTF8, 0, quoted_command, -1, wstr , size);
8925         status = _wsystem (wstr);
8926         g_free (wstr);
8927
8928         g_free (quoted_command);
8929 #elif defined (HAVE_SYSTEM)
8930         status = system (command);
8931 #else
8932         g_assert_not_reached ();
8933 #endif
8934
8935         return status;
8936 }
8937
8938 #ifdef ENABLE_LLVM
8939
8940 /*
8941  * emit_llvm_file:
8942  *
8943  *   Emit the LLVM code into an LLVM bytecode file, and compile it using the LLVM
8944  * tools.
8945  */
8946 static gboolean
8947 emit_llvm_file (MonoAotCompile *acfg)
8948 {
8949         char *command, *opts, *tempbc, *optbc, *output_fname;
8950
8951         if (acfg->aot_opts.llvm_only && acfg->aot_opts.asm_only) {
8952                 tempbc = g_strdup_printf ("%s.bc", acfg->tmpbasename);
8953                 optbc = g_strdup (acfg->aot_opts.llvm_outfile);
8954         } else {
8955                 tempbc = g_strdup_printf ("%s.bc", acfg->tmpbasename);
8956                 optbc = g_strdup_printf ("%s.opt.bc", acfg->tmpbasename);
8957         }
8958
8959         mono_llvm_emit_aot_module (tempbc, g_path_get_basename (acfg->image->name));
8960
8961         /*
8962          * FIXME: Experiment with adding optimizations, the -std-compile-opts set takes
8963          * a lot of time, and doesn't seem to save much space.
8964          * The following optimizations cannot be enabled:
8965          * - 'tailcallelim'
8966          * - 'jump-threading' changes our blockaddress references to int constants.
8967          * - 'basiccg' fails because it contains:
8968          * if (CS && !isa<IntrinsicInst>(II)) {
8969          * and isa<IntrinsicInst> is false for invokes to intrinsics (iltests.exe).
8970          * - 'prune-eh' and 'functionattrs' depend on 'basiccg'.
8971          * The opt list below was produced by taking the output of:
8972          * llvm-as < /dev/null | opt -O2 -disable-output -debug-pass=Arguments
8973          * then removing tailcallelim + the global opts.
8974          * strip-dead-prototypes deletes unused intrinsics definitions.
8975          */
8976         /* The dse pass is disabled because of #13734 and #17616 */
8977         /*
8978          * The dse bug is in DeadStoreElimination.cpp:isOverwrite ():
8979          * // If we have no DataLayout information around, then the size of the store
8980          *  // is inferrable from the pointee type.  If they are the same type, then
8981          * // we know that the store is safe.
8982          * if (AA.getDataLayout() == 0 &&
8983          * Later.Ptr->getType() == Earlier.Ptr->getType()) {
8984          * return OverwriteComplete;
8985          * Here, if 'Earlier' refers to a memset, and Later has no size info, it mistakenly thinks the memset is redundant.
8986          */
8987         if (acfg->aot_opts.llvm_only)
8988                 // FIXME: This doesn't work yet
8989                 opts = g_strdup ("");
8990         else
8991 #if LLVM_API_VERSION > 100
8992                 opts = g_strdup ("-O2 -disable-tail-calls");
8993 #else
8994                 opts = g_strdup ("-targetlibinfo -no-aa -basicaa -notti -instcombine -simplifycfg -inline-cost -inline -sroa -domtree -early-cse -lazy-value-info -correlated-propagation -simplifycfg -instcombine -simplifycfg -reassociate -domtree -loops -loop-simplify -lcssa -loop-rotate -licm -lcssa -loop-unswitch -instcombine -scalar-evolution -loop-simplify -lcssa -indvars -loop-idiom -loop-deletion -loop-unroll -memdep -gvn -memdep -memcpyopt -sccp -instcombine -lazy-value-info -correlated-propagation -domtree -memdep -adce -simplifycfg -instcombine -strip-dead-prototypes -domtree -verify");
8995 #endif
8996         command = g_strdup_printf ("\"%sopt\" -f %s -o \"%s\" \"%s\"", acfg->aot_opts.llvm_path, opts, optbc, tempbc);
8997         aot_printf (acfg, "Executing opt: %s\n", command);
8998         if (execute_system (command) != 0)
8999                 return FALSE;
9000         g_free (opts);
9001
9002         if (acfg->aot_opts.llvm_only && acfg->aot_opts.asm_only)
9003                 /* Nothing else to do */
9004                 return TRUE;
9005
9006         if (acfg->aot_opts.llvm_only) {
9007                 /* Use the stock clang from xcode */
9008                 // FIXME: arch
9009                 command = g_strdup_printf ("clang++ -fexceptions -march=x86-64 -fpic -msse -msse2 -msse3 -msse4 -O2 -fno-optimize-sibling-calls -Wno-override-module -c -o \"%s\" \"%s.opt.bc\"", acfg->llvm_ofile, acfg->tmpbasename);
9010
9011                 aot_printf (acfg, "Executing clang: %s\n", command);
9012                 if (execute_system (command) != 0)
9013                         return FALSE;
9014                 return TRUE;
9015         }
9016
9017         if (!acfg->llc_args)
9018                 acfg->llc_args = g_string_new ("");
9019
9020         /* Verbose asm slows down llc greatly */
9021         g_string_append (acfg->llc_args, " -asm-verbose=false");
9022
9023         if (acfg->aot_opts.mtriple)
9024                 g_string_append_printf (acfg->llc_args, " -mtriple=%s", acfg->aot_opts.mtriple);
9025
9026         g_string_append (acfg->llc_args, " -disable-gnu-eh-frame -enable-mono-eh-frame");
9027
9028         g_string_append_printf (acfg->llc_args, " -mono-eh-frame-symbol=%s%s", acfg->user_symbol_prefix, acfg->llvm_eh_frame_symbol);
9029
9030 #if LLVM_API_VERSION > 100
9031         g_string_append_printf (acfg->llc_args, " -disable-tail-calls");
9032 #endif
9033
9034 #if ( defined(TARGET_MACH) && defined(TARGET_ARM) ) || defined(TARGET_ORBIS)
9035         /* ios requires PIC code now */
9036         g_string_append_printf (acfg->llc_args, " -relocation-model=pic");
9037 #else
9038         if (llvm_acfg->aot_opts.static_link)
9039                 g_string_append_printf (acfg->llc_args, " -relocation-model=static");
9040         else
9041                 g_string_append_printf (acfg->llc_args, " -relocation-model=pic");
9042 #endif
9043
9044         if (acfg->llvm_owriter) {
9045                 /* Emit an object file directly */
9046                 output_fname = g_strdup_printf ("%s", acfg->llvm_ofile);
9047                 g_string_append_printf (acfg->llc_args, " -filetype=obj");
9048         } else {
9049                 output_fname = g_strdup_printf ("%s", acfg->llvm_sfile);
9050         }
9051         command = g_strdup_printf ("\"%sllc\" %s -o \"%s\" \"%s.opt.bc\"", acfg->aot_opts.llvm_path, acfg->llc_args->str, output_fname, acfg->tmpbasename);
9052         g_free (output_fname);
9053
9054         aot_printf (acfg, "Executing llc: %s\n", command);
9055
9056         if (execute_system (command) != 0)
9057                 return FALSE;
9058         return TRUE;
9059 }
9060 #endif
9061
9062 static void
9063 emit_code (MonoAotCompile *acfg)
9064 {
9065         int oindex, i, prev_index;
9066         gboolean saved_unbox_info = FALSE;
9067         char symbol [MAX_SYMBOL_SIZE];
9068
9069         if (acfg->aot_opts.llvm_only)
9070                 return;
9071
9072 #if defined(TARGET_POWERPC64)
9073         sprintf (symbol, ".Lgot_addr");
9074         emit_section_change (acfg, ".text", 0);
9075         emit_alignment (acfg, 8);
9076         emit_label (acfg, symbol);
9077         emit_pointer (acfg, acfg->got_symbol);
9078 #endif
9079
9080         /*
9081          * This global symbol is used to compute the address of each method using the
9082          * code_offsets array. It is also used to compute the memory ranges occupied by
9083          * AOT code, so it must be equal to the address of the first emitted method.
9084          */
9085         emit_section_change (acfg, ".text", 0);
9086         emit_alignment_code (acfg, 8);
9087         emit_info_symbol (acfg, "jit_code_start");
9088
9089         /*
9090          * Emit some padding so the local symbol for the first method doesn't have the
9091          * same address as 'methods'.
9092          */
9093         emit_padding (acfg, 16);
9094
9095         for (oindex = 0; oindex < acfg->method_order->len; ++oindex) {
9096                 MonoCompile *cfg;
9097                 MonoMethod *method;
9098
9099                 i = GPOINTER_TO_UINT (g_ptr_array_index (acfg->method_order, oindex));
9100
9101                 cfg = acfg->cfgs [i];
9102
9103                 if (!cfg)
9104                         continue;
9105
9106                 method = cfg->orig_method;
9107
9108                 gboolean dedup_collect = acfg->aot_opts.dedup || (acfg->aot_opts.dedup_include && !acfg->dedup_emit_mode);
9109                 gboolean dedupable = mono_aot_can_dedup (method);
9110
9111                 // cfg->skip is vital for LLVM to work, can't just continue in this loop
9112                 if (dedupable && strcmp (method->name, "wbarrier_conc") && dedup_collect) {
9113                         mono_dedup_cache_method (acfg, method);
9114
9115                         // Don't compile inflated methods if we're in first phase of
9116                         // dedup
9117                         //
9118                         // In second phase, we emit methods that
9119                         // are dedupable. We also emit later methods
9120                         // which are referenced by them and added later.
9121                         // For this reason, when in the dedup_include mode,
9122                         // we never set skip.
9123                         if (acfg->aot_opts.dedup)
9124                                 cfg->skip = TRUE;
9125                 }
9126
9127                 // Don't compile anything in this mode
9128                 if (acfg->aot_opts.dedup_include && !acfg->dedup_emit_mode)
9129                         cfg->skip = TRUE;
9130
9131                 // Compile everything in this mode
9132                 if (acfg->aot_opts.dedup_include && acfg->dedup_emit_mode)
9133                         cfg->skip = FALSE;
9134
9135                 /*if (dedup_collect) {*/
9136                         /*char *name = mono_aot_get_mangled_method_name (method);*/
9137
9138                         /*if (ignore_cfg (cfg))*/
9139                                 /*aot_printf (acfg, "Dedup Skipping %s\n", acfg->image->name, name);*/
9140                         /*else*/
9141                                 /*aot_printf (acfg, "Dedup Keeping %s\n", acfg->image->name, name);*/
9142
9143                         /*g_free (name);*/
9144                 /*}*/
9145
9146                 if (ignore_cfg (cfg))
9147                         continue;
9148
9149                 /* Emit unbox trampoline */
9150                 if (mono_aot_mode_is_full (&acfg->aot_opts) && m_class_is_valuetype (cfg->orig_method->klass)) {
9151                         sprintf (symbol, "ut_%d", get_method_index (acfg, method));
9152
9153                         emit_section_change (acfg, ".text", 0);
9154
9155                         if (acfg->thumb_mixed && cfg->compile_llvm) {
9156                                 emit_set_thumb_mode (acfg);
9157                                 fprintf (acfg->fp, "\n.thumb_func\n");
9158                         }
9159
9160                         emit_label (acfg, symbol);
9161
9162                         arch_emit_unbox_trampoline (acfg, cfg, cfg->orig_method, cfg->asm_symbol);
9163
9164                         if (acfg->thumb_mixed && cfg->compile_llvm)
9165                                 emit_set_arm_mode (acfg);
9166
9167                         if (!saved_unbox_info) {
9168                                 char user_symbol [128];
9169                                 GSList *unwind_ops;
9170                                 sprintf (user_symbol, "%sunbox_trampoline_p", acfg->user_symbol_prefix);
9171
9172                                 emit_label (acfg, "ut_end");
9173
9174                                 unwind_ops = mono_unwind_get_cie_program ();
9175                                 save_unwind_info (acfg, user_symbol, unwind_ops);
9176                                 mono_free_unwind_info (unwind_ops);
9177
9178                                 /* Save the unbox trampoline size */
9179                                 emit_symbol_diff (acfg, "ut_end", symbol, 0);
9180
9181                                 saved_unbox_info = TRUE;
9182                         }
9183                 }
9184
9185                 if (cfg->compile_llvm) {
9186                         acfg->stats.llvm_count ++;
9187                 } else {
9188                         emit_method_code (acfg, cfg);
9189                 }
9190         }
9191
9192         emit_section_change (acfg, ".text", 0);
9193         emit_alignment_code (acfg, 8);
9194         emit_info_symbol (acfg, "jit_code_end");
9195
9196         /* To distinguish it from the next symbol */
9197         emit_padding (acfg, 4);
9198
9199         /*
9200          * Add .no_dead_strip directives for all LLVM methods to prevent the OSX linker
9201          * from optimizing them away, since it doesn't see that code_offsets references them.
9202          * JITted methods don't need this since they are referenced using assembler local
9203          * symbols.
9204          * FIXME: This is why write-symbols doesn't work on OSX ?
9205          */
9206         if (acfg->llvm && acfg->need_no_dead_strip) {
9207                 fprintf (acfg->fp, "\n");
9208                 for (i = 0; i < acfg->nmethods; ++i) {
9209                         if (acfg->cfgs [i] && acfg->cfgs [i]->compile_llvm)
9210                                 fprintf (acfg->fp, ".no_dead_strip %s\n", acfg->cfgs [i]->asm_symbol);
9211                 }
9212         }
9213
9214         /*
9215          * To work around linker issues, we emit a table of branches, and disassemble them at runtime.
9216          * This is PIE code, and the linker can update it if needed.
9217          */
9218
9219         sprintf (symbol, "method_addresses");
9220         emit_section_change (acfg, ".text", 1);
9221         emit_alignment_code (acfg, 8);
9222         emit_info_symbol (acfg, symbol);
9223         if (acfg->aot_opts.write_symbols)
9224                 emit_local_symbol (acfg, symbol, "method_addresses_end", TRUE);
9225         emit_unset_mode (acfg);
9226         if (acfg->need_no_dead_strip)
9227                 fprintf (acfg->fp, "    .no_dead_strip %s\n", symbol);
9228
9229         for (i = 0; i < acfg->nmethods; ++i) {
9230 #ifdef MONO_ARCH_AOT_SUPPORTED
9231                 int call_size;
9232
9233                 if (!ignore_cfg (acfg->cfgs [i])) {
9234                         arch_emit_direct_call (acfg, acfg->cfgs [i]->asm_symbol, FALSE, acfg->thumb_mixed && acfg->cfgs [i]->compile_llvm, NULL, &call_size);
9235                 } else {
9236                         arch_emit_direct_call (acfg, symbol, FALSE, FALSE, NULL, &call_size);
9237                 }
9238 #endif
9239         }
9240
9241         sprintf (symbol, "method_addresses_end");
9242         emit_label (acfg, symbol);
9243         emit_line (acfg);
9244
9245         /* Emit a sorted table mapping methods to the index of their unbox trampolines */
9246         sprintf (symbol, "unbox_trampolines");
9247         emit_section_change (acfg, RODATA_SECT, 0);
9248         emit_alignment (acfg, 8);
9249         emit_info_symbol (acfg, symbol);
9250
9251         prev_index = -1;
9252         for (i = 0; i < acfg->nmethods; ++i) {
9253                 MonoCompile *cfg;
9254                 MonoMethod *method;
9255                 int index;
9256
9257                 cfg = acfg->cfgs [i];
9258                 if (ignore_cfg (cfg))
9259                         continue;
9260
9261                 method = cfg->orig_method;
9262
9263                 if (mono_aot_mode_is_full (&acfg->aot_opts) && m_class_is_valuetype (cfg->orig_method->klass)) {
9264                         index = get_method_index (acfg, method);
9265
9266                         emit_int32 (acfg, index);
9267                         /* Make sure the table is sorted by index */
9268                         g_assert (index > prev_index);
9269                         prev_index = index;
9270                 }
9271         }
9272         sprintf (symbol, "unbox_trampolines_end");
9273         emit_info_symbol (acfg, symbol);
9274         emit_int32 (acfg, 0);
9275
9276         /* Emit a separate table with the trampoline addresses/offsets */
9277         sprintf (symbol, "unbox_trampoline_addresses");
9278         emit_section_change (acfg, ".text", 0);
9279         emit_alignment_code (acfg, 8);
9280         emit_info_symbol (acfg, symbol);
9281
9282         for (i = 0; i < acfg->nmethods; ++i) {
9283                 MonoCompile *cfg;
9284                 MonoMethod *method;
9285                 int index;
9286
9287                 cfg = acfg->cfgs [i];
9288                 if (ignore_cfg (cfg))
9289                         continue;
9290
9291                 method = cfg->orig_method;
9292
9293                 if (mono_aot_mode_is_full (&acfg->aot_opts) && m_class_is_valuetype (cfg->orig_method->klass)) {
9294 #ifdef MONO_ARCH_AOT_SUPPORTED
9295                         int call_size;
9296
9297                         index = get_method_index (acfg, method);
9298                         sprintf (symbol, "ut_%d", index);
9299
9300                         arch_emit_direct_call (acfg, symbol, FALSE, acfg->thumb_mixed && cfg->compile_llvm, NULL, &call_size);
9301 #endif
9302                 }
9303         }
9304         emit_int32 (acfg, 0);
9305 }
9306
9307 static void
9308 emit_info (MonoAotCompile *acfg)
9309 {
9310         int oindex, i;
9311         gint32 *offsets;
9312
9313         offsets = g_new0 (gint32, acfg->nmethods);
9314
9315         for (oindex = 0; oindex < acfg->method_order->len; ++oindex) {
9316                 i = GPOINTER_TO_UINT (g_ptr_array_index (acfg->method_order, oindex));
9317
9318                 if (acfg->cfgs [i]) {
9319                         emit_method_info (acfg, acfg->cfgs [i]);
9320                         offsets [i] = acfg->cfgs [i]->method_info_offset;
9321                 } else {
9322                         offsets [i] = 0;
9323                 }
9324         }
9325
9326         acfg->stats.offsets_size += emit_offset_table (acfg, "method_info_offsets", MONO_AOT_TABLE_METHOD_INFO_OFFSETS, acfg->nmethods, 10, offsets);
9327
9328         g_free (offsets);
9329 }
9330
9331 #endif /* #if !defined(DISABLE_AOT) && !defined(DISABLE_JIT) */
9332
9333 #define rot(x,k) (((x)<<(k)) | ((x)>>(32-(k))))
9334 #define mix(a,b,c) { \
9335         a -= c;  a ^= rot(c, 4);  c += b; \
9336         b -= a;  b ^= rot(a, 6);  a += c; \
9337         c -= b;  c ^= rot(b, 8);  b += a; \
9338         a -= c;  a ^= rot(c,16);  c += b; \
9339         b -= a;  b ^= rot(a,19);  a += c; \
9340         c -= b;  c ^= rot(b, 4);  b += a; \
9341 }
9342 #define final(a,b,c) { \
9343         c ^= b; c -= rot(b,14); \
9344         a ^= c; a -= rot(c,11); \
9345         b ^= a; b -= rot(a,25); \
9346         c ^= b; c -= rot(b,16); \
9347         a ^= c; a -= rot(c,4);  \
9348         b ^= a; b -= rot(a,14); \
9349         c ^= b; c -= rot(b,24); \
9350 }
9351
9352 static guint
9353 mono_aot_type_hash (MonoType *t1)
9354 {
9355         guint hash = t1->type;
9356
9357         hash |= t1->byref << 6; /* do not collide with t1->type values */
9358         switch (t1->type) {
9359         case MONO_TYPE_VALUETYPE:
9360         case MONO_TYPE_CLASS:
9361         case MONO_TYPE_SZARRAY:
9362                 /* check if the distribution is good enough */
9363                 return ((hash << 5) - hash) ^ mono_metadata_str_hash (m_class_get_name (t1->data.klass));
9364         case MONO_TYPE_PTR:
9365                 return ((hash << 5) - hash) ^ mono_metadata_type_hash (t1->data.type);
9366         case MONO_TYPE_ARRAY:
9367                 return ((hash << 5) - hash) ^ mono_metadata_type_hash (m_class_get_byval_arg (t1->data.array->eklass));
9368         case MONO_TYPE_GENERICINST:
9369                 return ((hash << 5) - hash) ^ 0;
9370         default:
9371                 return hash;
9372         }
9373 }
9374
9375 /*
9376  * mono_aot_method_hash:
9377  *
9378  *   Return a hash code for methods which only depends on metadata.
9379  */
9380 guint32
9381 mono_aot_method_hash (MonoMethod *method)
9382 {
9383         MonoMethodSignature *sig;
9384         MonoClass *klass;
9385         int i, hindex;
9386         int hashes_count;
9387         guint32 *hashes_start, *hashes;
9388         guint32 a, b, c;
9389         MonoGenericInst *class_ginst = NULL;
9390         MonoGenericInst *ginst = NULL;
9391
9392         /* Similar to the hash in mono_method_get_imt_slot () */
9393
9394         sig = mono_method_signature (method);
9395
9396         if (mono_class_is_ginst (method->klass))
9397                 class_ginst = mono_class_get_generic_class (method->klass)->context.class_inst;
9398         if (method->is_inflated)
9399                 ginst = ((MonoMethodInflated*)method)->context.method_inst;
9400
9401         hashes_count = sig->param_count + 5 + (class_ginst ? class_ginst->type_argc : 0) + (ginst ? ginst->type_argc : 0);
9402         hashes_start = (guint32 *)g_malloc0 (hashes_count * sizeof (guint32));
9403         hashes = hashes_start;
9404
9405         /* Some wrappers are assigned to random classes */
9406         if (!method->wrapper_type || method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)
9407                 klass = method->klass;
9408         else
9409                 klass = mono_defaults.object_class;
9410
9411         if (!method->wrapper_type) {
9412                 char *full_name;
9413
9414                 if (mono_class_is_ginst (klass))
9415                         full_name = mono_type_full_name (m_class_get_byval_arg (mono_class_get_generic_class (klass)->container_class));
9416                 else
9417                         full_name = mono_type_full_name (m_class_get_byval_arg (klass));
9418
9419                 hashes [0] = mono_metadata_str_hash (full_name);
9420                 hashes [1] = 0;
9421                 g_free (full_name);
9422         } else {
9423                 hashes [0] = mono_metadata_str_hash (m_class_get_name (klass));
9424                 hashes [1] = mono_metadata_str_hash (m_class_get_name_space (klass));
9425         }
9426         if (method->wrapper_type == MONO_WRAPPER_STFLD || method->wrapper_type == MONO_WRAPPER_LDFLD || method->wrapper_type == MONO_WRAPPER_LDFLDA)
9427                 /* The method name includes a stringified pointer */
9428                 hashes [2] = 0;
9429         else
9430                 hashes [2] = mono_metadata_str_hash (method->name);
9431         hashes [3] = method->wrapper_type;
9432         hashes [4] = mono_aot_type_hash (sig->ret);
9433         hindex = 5;
9434         for (i = 0; i < sig->param_count; i++) {
9435                 hashes [hindex ++] = mono_aot_type_hash (sig->params [i]);
9436         }
9437         if (class_ginst) {
9438                 for (i = 0; i < class_ginst->type_argc; ++i)
9439                         hashes [hindex ++] = mono_aot_type_hash (class_ginst->type_argv [i]);
9440         }
9441         if (ginst) {
9442                 for (i = 0; i < ginst->type_argc; ++i)
9443                         hashes [hindex ++] = mono_aot_type_hash (ginst->type_argv [i]);
9444         }
9445         g_assert (hindex == hashes_count);
9446
9447         /* Setup internal state */
9448         a = b = c = 0xdeadbeef + (((guint32)hashes_count)<<2);
9449
9450         /* Handle most of the hashes */
9451         while (hashes_count > 3) {
9452                 a += hashes [0];
9453                 b += hashes [1];
9454                 c += hashes [2];
9455                 mix (a,b,c);
9456                 hashes_count -= 3;
9457                 hashes += 3;
9458         }
9459
9460         /* Handle the last 3 hashes (all the case statements fall through) */
9461         switch (hashes_count) {
9462         case 3 : c += hashes [2];
9463         case 2 : b += hashes [1];
9464         case 1 : a += hashes [0];
9465                 final (a,b,c);
9466         case 0: /* nothing left to add */
9467                 break;
9468         }
9469
9470         g_free (hashes_start);
9471
9472         return c;
9473 }
9474 #undef rot
9475 #undef mix
9476 #undef final
9477
9478 /*
9479  * mono_aot_get_array_helper_from_wrapper;
9480  *
9481  * Get the helper method in Array called by an array wrapper method.
9482  */
9483 MonoMethod*
9484 mono_aot_get_array_helper_from_wrapper (MonoMethod *method)
9485 {
9486         MonoMethod *m;
9487         const char *prefix;
9488         MonoGenericContext ctx;
9489         MonoType *args [16];
9490         char *mname, *iname, *s, *s2, *helper_name = NULL;
9491
9492         prefix = "System.Collections.Generic";
9493         s = g_strdup_printf ("%s", method->name + strlen (prefix) + 1);
9494         s2 = strstr (s, "`1.");
9495         g_assert (s2);
9496         s2 [0] = '\0';
9497         iname = s;
9498         mname = s2 + 3;
9499
9500         //printf ("X: %s %s\n", iname, mname);
9501
9502         if (!strcmp (iname, "IList"))
9503                 helper_name = g_strdup_printf ("InternalArray__%s", mname);
9504         else
9505                 helper_name = g_strdup_printf ("InternalArray__%s_%s", iname, mname);
9506         m = mono_class_get_method_from_name (mono_defaults.array_class, helper_name, mono_method_signature (method)->param_count);
9507         g_assert (m);
9508         g_free (helper_name);
9509         g_free (s);
9510
9511         if (m->is_generic) {
9512                 ERROR_DECL (error);
9513                 memset (&ctx, 0, sizeof (ctx));
9514                 args [0] = m_class_get_byval_arg (m_class_get_element_class (method->klass));
9515                 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
9516                 m = mono_class_inflate_generic_method_checked (m, &ctx, error);
9517                 g_assert (mono_error_ok (error)); /* FIXME don't swallow the error */
9518         }
9519
9520         return m;
9521 }
9522
9523 #if !defined(DISABLE_AOT) && !defined(DISABLE_JIT)
9524
9525 typedef struct HashEntry {
9526     guint32 key, value, index;
9527         struct HashEntry *next;
9528 } HashEntry;
9529
9530 /*
9531  * emit_extra_methods:
9532  *
9533  * Emit methods which are not in the METHOD table, like wrappers.
9534  */
9535 static void
9536 emit_extra_methods (MonoAotCompile *acfg)
9537 {
9538         int i, table_size, buf_size;
9539         guint8 *p, *buf;
9540         guint32 *info_offsets;
9541         guint32 hash;
9542         GPtrArray *table;
9543         HashEntry *entry, *new_entry;
9544         int nmethods, max_chain_length;
9545         int *chain_lengths;
9546
9547         info_offsets = g_new0 (guint32, acfg->extra_methods->len);
9548
9549         /* Emit method info */
9550         nmethods = 0;
9551         for (i = 0; i < acfg->extra_methods->len; ++i) {
9552                 MonoMethod *method = (MonoMethod *)g_ptr_array_index (acfg->extra_methods, i);
9553                 MonoCompile *cfg = (MonoCompile *)g_hash_table_lookup (acfg->method_to_cfg, method);
9554
9555                 if (ignore_cfg (cfg))
9556                         continue;
9557
9558                 buf_size = 10240;
9559                 p = buf = (guint8 *)g_malloc (buf_size);
9560
9561                 nmethods ++;
9562
9563                 method = cfg->method_to_register;
9564
9565                 encode_method_ref (acfg, method, p, &p);
9566
9567                 g_assert ((p - buf) < buf_size);
9568
9569                 info_offsets [i] = add_to_blob (acfg, buf, p - buf);
9570                 g_free (buf);
9571         }
9572
9573         /*
9574          * Construct a chained hash table for mapping indexes in extra_method_info to
9575          * method indexes.
9576          */
9577         table_size = g_spaced_primes_closest ((int)(nmethods * 1.5));
9578         table = g_ptr_array_sized_new (table_size);
9579         for (i = 0; i < table_size; ++i)
9580                 g_ptr_array_add (table, NULL);
9581         chain_lengths = g_new0 (int, table_size);
9582         max_chain_length = 0;
9583         for (i = 0; i < acfg->extra_methods->len; ++i) {
9584                 MonoMethod *method = (MonoMethod *)g_ptr_array_index (acfg->extra_methods, i);
9585                 MonoCompile *cfg = (MonoCompile *)g_hash_table_lookup (acfg->method_to_cfg, method);
9586                 guint32 key, value;
9587
9588                 if (ignore_cfg (cfg))
9589                         continue;
9590
9591                 key = info_offsets [i];
9592                 value = get_method_index (acfg, method);
9593
9594                 hash = mono_aot_method_hash (method) % table_size;
9595                 //printf ("X: %s %x\n", mono_method_get_full_name (method), mono_aot_method_hash (method));
9596
9597                 chain_lengths [hash] ++;
9598                 max_chain_length = MAX (max_chain_length, chain_lengths [hash]);
9599
9600                 new_entry = (HashEntry *)mono_mempool_alloc0 (acfg->mempool, sizeof (HashEntry));
9601                 new_entry->key = key;
9602                 new_entry->value = value;
9603
9604                 entry = (HashEntry *)g_ptr_array_index (table, hash);
9605                 if (entry == NULL) {
9606                         new_entry->index = hash;
9607                         g_ptr_array_index (table, hash) = new_entry;
9608                 } else {
9609                         while (entry->next)
9610                                 entry = entry->next;
9611
9612                         entry->next = new_entry;
9613                         new_entry->index = table->len;
9614                         g_ptr_array_add (table, new_entry);
9615                 }
9616         }
9617         g_free (chain_lengths);
9618
9619         //printf ("MAX: %d\n", max_chain_length);
9620
9621         buf_size = table->len * 12 + 4;
9622         p = buf = (guint8 *)g_malloc (buf_size);
9623         encode_int (table_size, p, &p);
9624
9625         for (i = 0; i < table->len; ++i) {
9626                 HashEntry *entry = (HashEntry *)g_ptr_array_index (table, i);
9627
9628                 if (entry == NULL) {
9629                         encode_int (0, p, &p);
9630                         encode_int (0, p, &p);
9631                         encode_int (0, p, &p);
9632                 } else {
9633                         //g_assert (entry->key > 0);
9634                         encode_int (entry->key, p, &p);
9635                         encode_int (entry->value, p, &p);
9636                         if (entry->next)
9637                                 encode_int (entry->next->index, p, &p);
9638                         else
9639                                 encode_int (0, p, &p);
9640                 }
9641         }
9642         g_assert (p - buf <= buf_size);
9643
9644         /* Emit the table */
9645         emit_aot_data (acfg, MONO_AOT_TABLE_EXTRA_METHOD_TABLE, "extra_method_table", buf, p - buf);
9646
9647         g_free (buf);
9648
9649         /*
9650          * Emit a table reverse mapping method indexes to their index in extra_method_info.
9651          * This is used by mono_aot_find_jit_info ().
9652          */
9653         buf_size = acfg->extra_methods->len * 8 + 4;
9654         p = buf = (guint8 *)g_malloc (buf_size);
9655         encode_int (acfg->extra_methods->len, p, &p);
9656         for (i = 0; i < acfg->extra_methods->len; ++i) {
9657                 MonoMethod *method = (MonoMethod *)g_ptr_array_index (acfg->extra_methods, i);
9658
9659                 encode_int (get_method_index (acfg, method), p, &p);
9660                 encode_int (info_offsets [i], p, &p);
9661         }
9662         emit_aot_data (acfg, MONO_AOT_TABLE_EXTRA_METHOD_INFO_OFFSETS, "extra_method_info_offsets", buf, p - buf);
9663
9664         g_free (buf);
9665         g_free (info_offsets);
9666         g_ptr_array_free (table, TRUE);
9667 }
9668
9669 static void
9670 generate_aotid (guint8* aotid)
9671 {
9672         gpointer rand_handle;
9673         ERROR_DECL (error);
9674
9675         mono_rand_open ();
9676         rand_handle = mono_rand_init (NULL, 0);
9677
9678         mono_rand_try_get_bytes (&rand_handle, aotid, 16, error);
9679         mono_error_assert_ok (error);
9680
9681         mono_rand_close (rand_handle);
9682 }
9683
9684 static void
9685 emit_exception_info (MonoAotCompile *acfg)
9686 {
9687         int i;
9688         gint32 *offsets;
9689         SeqPointData sp_data;
9690         gboolean seq_points_to_file = FALSE;
9691
9692         offsets = g_new0 (gint32, acfg->nmethods);
9693         for (i = 0; i < acfg->nmethods; ++i) {
9694                 if (acfg->cfgs [i]) {
9695                         MonoCompile *cfg = acfg->cfgs [i];
9696
9697                         // By design aot-runtime decode_exception_debug_info is not able to load sequence point debug data from a file.
9698                         // As it is not possible to load debug data from a file its is also not possible to store it in a file.
9699                         gboolean method_seq_points_to_file = acfg->aot_opts.gen_msym_dir &&
9700                                 cfg->gen_seq_points && !cfg->gen_sdb_seq_points;
9701                         gboolean method_seq_points_to_binary = cfg->gen_seq_points && !method_seq_points_to_file;
9702
9703                         emit_exception_debug_info (acfg, cfg, method_seq_points_to_binary);
9704                         offsets [i] = cfg->ex_info_offset;
9705
9706                         if (method_seq_points_to_file) {
9707                                 if (!seq_points_to_file) {
9708                                         mono_seq_point_data_init (&sp_data, acfg->nmethods);
9709                                         seq_points_to_file = TRUE;
9710                                 }
9711                                 mono_seq_point_data_add (&sp_data, cfg->method->token, cfg->method_index, cfg->seq_point_info);
9712                         }
9713                 } else {
9714                         offsets [i] = 0;
9715                 }
9716         }
9717
9718         if (seq_points_to_file) {
9719                 char *aotid = mono_guid_to_string_minimal (acfg->image->aotid);
9720                 char *dir = g_build_filename (acfg->aot_opts.gen_msym_dir_path, aotid, NULL);
9721                 char *image_basename = g_path_get_basename (acfg->image->name);
9722                 char *aot_file = g_strdup_printf("%s%s", image_basename, SEQ_POINT_AOT_EXT);
9723                 char *aot_file_path = g_build_filename (dir, aot_file, NULL);
9724
9725                 if (g_ensure_directory_exists (aot_file_path) == FALSE) {
9726                         fprintf (stderr, "AOT : failed to create msym directory: %s\n", aot_file_path);
9727                         exit (1);
9728                 }
9729
9730                 mono_seq_point_data_write (&sp_data, aot_file_path);
9731                 mono_seq_point_data_free (&sp_data);
9732
9733                 g_free (aotid);
9734                 g_free (dir);
9735                 g_free (image_basename);
9736                 g_free (aot_file);
9737                 g_free (aot_file_path);
9738         }
9739
9740         acfg->stats.offsets_size += emit_offset_table (acfg, "ex_info_offsets", MONO_AOT_TABLE_EX_INFO_OFFSETS, acfg->nmethods, 10, offsets);
9741         g_free (offsets);
9742 }
9743
9744 static void
9745 emit_unwind_info (MonoAotCompile *acfg)
9746 {
9747         int i;
9748         char symbol [128];
9749
9750         if (acfg->aot_opts.llvm_only) {
9751                 g_assert (acfg->unwind_ops->len == 0);
9752                 return;
9753         }
9754
9755         /*
9756          * The unwind info contains a lot of duplicates so we emit each unique
9757          * entry once, and only store the offset from the start of the table in the
9758          * exception info.
9759          */
9760
9761         sprintf (symbol, "unwind_info");
9762         emit_section_change (acfg, RODATA_SECT, 1);
9763         emit_alignment (acfg, 8);
9764         emit_info_symbol (acfg, symbol);
9765
9766         for (i = 0; i < acfg->unwind_ops->len; ++i) {
9767                 guint32 index = GPOINTER_TO_UINT (g_ptr_array_index (acfg->unwind_ops, i));
9768                 guint8 *unwind_info;
9769                 guint32 unwind_info_len;
9770                 guint8 buf [16];
9771                 guint8 *p;
9772
9773                 unwind_info = mono_get_cached_unwind_info (index, &unwind_info_len);
9774
9775                 p = buf;
9776                 encode_value (unwind_info_len, p, &p);
9777                 emit_bytes (acfg, buf, p - buf);
9778                 emit_bytes (acfg, unwind_info, unwind_info_len);
9779
9780                 acfg->stats.unwind_info_size += (p - buf) + unwind_info_len;
9781         }
9782 }
9783
9784 static void
9785 emit_class_info (MonoAotCompile *acfg)
9786 {
9787         int i;
9788         gint32 *offsets;
9789
9790         offsets = g_new0 (gint32, acfg->image->tables [MONO_TABLE_TYPEDEF].rows);
9791         for (i = 0; i < acfg->image->tables [MONO_TABLE_TYPEDEF].rows; ++i)
9792                 offsets [i] = emit_klass_info (acfg, MONO_TOKEN_TYPE_DEF | (i + 1));
9793
9794         acfg->stats.offsets_size += emit_offset_table (acfg, "class_info_offsets", MONO_AOT_TABLE_CLASS_INFO_OFFSETS, acfg->image->tables [MONO_TABLE_TYPEDEF].rows, 10, offsets);
9795         g_free (offsets);
9796 }
9797
9798 typedef struct ClassNameTableEntry {
9799         guint32 token, index;
9800         struct ClassNameTableEntry *next;
9801 } ClassNameTableEntry;
9802
9803 static void
9804 emit_class_name_table (MonoAotCompile *acfg)
9805 {
9806         int i, table_size, buf_size;
9807         guint32 token, hash;
9808         MonoClass *klass;
9809         GPtrArray *table;
9810         char *full_name;
9811         guint8 *buf, *p;
9812         ClassNameTableEntry *entry, *new_entry;
9813
9814         /*
9815          * Construct a chained hash table for mapping class names to typedef tokens.
9816          */
9817         table_size = g_spaced_primes_closest ((int)(acfg->image->tables [MONO_TABLE_TYPEDEF].rows * 1.5));
9818         table = g_ptr_array_sized_new (table_size);
9819         for (i = 0; i < table_size; ++i)
9820                 g_ptr_array_add (table, NULL);
9821         for (i = 0; i < acfg->image->tables [MONO_TABLE_TYPEDEF].rows; ++i) {
9822                 ERROR_DECL (error);
9823                 token = MONO_TOKEN_TYPE_DEF | (i + 1);
9824                 klass = mono_class_get_checked (acfg->image, token, error);
9825                 if (!klass) {
9826                         mono_error_cleanup (error);
9827                         continue;
9828                 }
9829                 full_name = mono_type_get_name_full (mono_class_get_type (klass), MONO_TYPE_NAME_FORMAT_FULL_NAME);
9830                 hash = mono_metadata_str_hash (full_name) % table_size;
9831                 g_free (full_name);
9832
9833                 /* FIXME: Allocate from the mempool */
9834                 new_entry = g_new0 (ClassNameTableEntry, 1);
9835                 new_entry->token = token;
9836
9837                 entry = (ClassNameTableEntry *)g_ptr_array_index (table, hash);
9838                 if (entry == NULL) {
9839                         new_entry->index = hash;
9840                         g_ptr_array_index (table, hash) = new_entry;
9841                 } else {
9842                         while (entry->next)
9843                                 entry = entry->next;
9844
9845                         entry->next = new_entry;
9846                         new_entry->index = table->len;
9847                         g_ptr_array_add (table, new_entry);
9848                 }
9849         }
9850
9851         /* Emit the table */
9852         buf_size = table->len * 4 + 4;
9853         p = buf = (guint8 *)g_malloc0 (buf_size);
9854
9855         /* FIXME: Optimize memory usage */
9856         g_assert (table_size < 65000);
9857         encode_int16 (table_size, p, &p);
9858         g_assert (table->len < 65000);
9859         for (i = 0; i < table->len; ++i) {
9860                 ClassNameTableEntry *entry = (ClassNameTableEntry *)g_ptr_array_index (table, i);
9861
9862                 if (entry == NULL) {
9863                         encode_int16 (0, p, &p);
9864                         encode_int16 (0, p, &p);
9865                 } else {
9866                         encode_int16 (mono_metadata_token_index (entry->token), p, &p);
9867                         if (entry->next)
9868                                 encode_int16 (entry->next->index, p, &p);
9869                         else
9870                                 encode_int16 (0, p, &p);
9871                 }
9872                 g_free (entry);
9873         }
9874         g_assert (p - buf <= buf_size);
9875         g_ptr_array_free (table, TRUE);
9876
9877         emit_aot_data (acfg, MONO_AOT_TABLE_CLASS_NAME, "class_name_table", buf, p - buf);
9878
9879         g_free (buf);
9880 }
9881
9882 static void
9883 emit_image_table (MonoAotCompile *acfg)
9884 {
9885         int i, buf_size;
9886         guint8 *buf, *p;
9887
9888         /*
9889          * The image table is small but referenced in a lot of places.
9890          * So we emit it at once, and reference its elements by an index.
9891          */
9892         buf_size = acfg->image_table->len * 28 + 4;
9893         for (i = 0; i < acfg->image_table->len; i++) {
9894                 MonoImage *image = (MonoImage*)g_ptr_array_index (acfg->image_table, i);
9895                 MonoAssemblyName *aname = &image->assembly->aname;
9896
9897                 buf_size += strlen (image->assembly_name) + strlen (image->guid) + (aname->culture ? strlen (aname->culture) : 1) + strlen ((char*)aname->public_key_token) + 4;
9898         }
9899
9900         buf = p = (guint8 *)g_malloc0 (buf_size);
9901         encode_int (acfg->image_table->len, p, &p);
9902         for (i = 0; i < acfg->image_table->len; i++) {
9903                 MonoImage *image = (MonoImage*)g_ptr_array_index (acfg->image_table, i);
9904                 MonoAssemblyName *aname = &image->assembly->aname;
9905
9906                 /* FIXME: Support multi-module assemblies */
9907                 g_assert (image->assembly->image == image);
9908
9909                 encode_string (image->assembly_name, p, &p);
9910                 encode_string (image->guid, p, &p);
9911                 encode_string (aname->culture ? aname->culture : "", p, &p);
9912                 encode_string ((const char*)aname->public_key_token, p, &p);
9913
9914                 while (GPOINTER_TO_UINT (p) % 8 != 0)
9915                         p ++;
9916
9917                 encode_int (aname->flags, p, &p);
9918                 encode_int (aname->major, p, &p);
9919                 encode_int (aname->minor, p, &p);
9920                 encode_int (aname->build, p, &p);
9921                 encode_int (aname->revision, p, &p);
9922         }
9923         g_assert (p - buf <= buf_size);
9924
9925         emit_aot_data (acfg, MONO_AOT_TABLE_IMAGE_TABLE, "image_table", buf, p - buf);
9926
9927         g_free (buf);
9928 }
9929
9930 static void
9931 emit_weak_field_indexes (MonoAotCompile *acfg)
9932 {
9933         GHashTable *indexes;
9934         GHashTableIter iter;
9935         gpointer key, value;
9936         int buf_size;
9937         guint8 *buf, *p;
9938
9939         /* Emit a table of weak field indexes, since computing these at runtime is expensive */
9940         mono_assembly_init_weak_fields (acfg->image);
9941         indexes = acfg->image->weak_field_indexes;
9942         g_assert (indexes);
9943
9944         buf_size = (g_hash_table_size (indexes) + 1) * 4;
9945         buf = p = (guint8 *)g_malloc0 (buf_size);
9946
9947         encode_int (g_hash_table_size (indexes), p, &p);
9948         g_hash_table_iter_init (&iter, indexes);
9949         while (g_hash_table_iter_next (&iter, &key, &value)) {
9950                 guint32 index = GPOINTER_TO_UINT (key);
9951                 encode_int (index, p, &p);
9952         }
9953         g_assert (p - buf <= buf_size);
9954
9955         emit_aot_data (acfg, MONO_AOT_TABLE_WEAK_FIELD_INDEXES, "weak_field_indexes", buf, p - buf);
9956
9957         g_free (buf);
9958 }
9959
9960 static void
9961 emit_got_info (MonoAotCompile *acfg, gboolean llvm)
9962 {
9963         int i, first_plt_got_patch = 0, buf_size;
9964         guint8 *p, *buf;
9965         guint32 *got_info_offsets;
9966         GotInfo *info = llvm ? &acfg->llvm_got_info : &acfg->got_info;
9967
9968         /* Add the patches needed by the PLT to the GOT */
9969         if (!llvm) {
9970                 acfg->plt_got_offset_base = acfg->got_offset;
9971                 first_plt_got_patch = info->got_patches->len;
9972                 for (i = 1; i < acfg->plt_offset; ++i) {
9973                         MonoPltEntry *plt_entry = (MonoPltEntry *)g_hash_table_lookup (acfg->plt_offset_to_entry, GUINT_TO_POINTER (i));
9974
9975                         g_ptr_array_add (info->got_patches, plt_entry->ji);
9976
9977                         acfg->stats.got_slot_types [plt_entry->ji->type] ++;
9978                 }
9979
9980                 acfg->got_offset += acfg->plt_offset;
9981         }
9982
9983         /**
9984          * FIXME:
9985          * - optimize offsets table.
9986          * - reduce number of exported symbols.
9987          * - emit info for a klass only once.
9988          * - determine when a method uses a GOT slot which is guaranteed to be already
9989          *   initialized.
9990          * - clean up and document the code.
9991          * - use String.Empty in class libs.
9992          */
9993
9994         /* Encode info required to decode shared GOT entries */
9995         buf_size = info->got_patches->len * 128;
9996         p = buf = (guint8 *)mono_mempool_alloc (acfg->mempool, buf_size);
9997         got_info_offsets = (guint32 *)mono_mempool_alloc (acfg->mempool, info->got_patches->len * sizeof (guint32));
9998         if (!llvm) {
9999                 acfg->plt_got_info_offsets = (guint32 *)mono_mempool_alloc (acfg->mempool, acfg->plt_offset * sizeof (guint32));
10000                 /* Unused */
10001                 if (acfg->plt_offset)
10002                         acfg->plt_got_info_offsets [0] = 0;
10003         }
10004         for (i = 0; i < info->got_patches->len; ++i) {
10005                 MonoJumpInfo *ji = (MonoJumpInfo *)g_ptr_array_index (info->got_patches, i);
10006                 guint8 *p2;
10007
10008                 p = buf;
10009
10010                 encode_value (ji->type, p, &p);
10011                 p2 = p;
10012                 encode_patch (acfg, ji, p, &p);
10013                 acfg->stats.got_slot_info_sizes [ji->type] += p - p2;
10014                 g_assert (p - buf <= buf_size);
10015                 got_info_offsets [i] = add_to_blob (acfg, buf, p - buf);
10016
10017                 if (!llvm && i >= first_plt_got_patch)
10018                         acfg->plt_got_info_offsets [i - first_plt_got_patch + 1] = got_info_offsets [i];
10019                 acfg->stats.got_info_size += p - buf;
10020         }
10021
10022         /* Emit got_info_offsets table */
10023
10024         /* No need to emit offsets for the got plt entries, the plt embeds them directly */
10025         acfg->stats.offsets_size += emit_offset_table (acfg, llvm ? "llvm_got_info_offsets" : "got_info_offsets", llvm ? MONO_AOT_TABLE_LLVM_GOT_INFO_OFFSETS : MONO_AOT_TABLE_GOT_INFO_OFFSETS, llvm ? acfg->llvm_got_offset : first_plt_got_patch, 10, (gint32*)got_info_offsets);
10026 }
10027
10028 static void
10029 emit_got (MonoAotCompile *acfg)
10030 {
10031         char symbol [MAX_SYMBOL_SIZE];
10032
10033         if (acfg->aot_opts.llvm_only)
10034                 return;
10035
10036         /* Don't make GOT global so accesses to it don't need relocations */
10037         sprintf (symbol, "%s", acfg->got_symbol);
10038
10039 #ifdef TARGET_MACH
10040         emit_unset_mode (acfg);
10041         fprintf (acfg->fp, ".section __DATA, __bss\n");
10042         emit_alignment (acfg, 8);
10043         if (acfg->llvm)
10044                 emit_info_symbol (acfg, "jit_got");
10045         fprintf (acfg->fp, ".lcomm %s, %d\n", acfg->got_symbol, (int)(acfg->got_offset * sizeof (gpointer)));
10046 #else
10047         emit_section_change (acfg, ".bss", 0);
10048         emit_alignment (acfg, 8);
10049         if (acfg->aot_opts.write_symbols)
10050                 emit_local_symbol (acfg, symbol, "got_end", FALSE);
10051         emit_label (acfg, symbol);
10052         if (acfg->llvm)
10053                 emit_info_symbol (acfg, "jit_got");
10054         if (acfg->got_offset > 0)
10055                 emit_zero_bytes (acfg, (int)(acfg->got_offset * sizeof (gpointer)));
10056 #endif
10057
10058         sprintf (symbol, "got_end");
10059         emit_label (acfg, symbol);
10060 }
10061
10062 typedef struct GlobalsTableEntry {
10063         guint32 value, index;
10064         struct GlobalsTableEntry *next;
10065 } GlobalsTableEntry;
10066
10067 #ifdef TARGET_WIN32_MSVC
10068 #define DLL_ENTRY_POINT "DllMain"
10069
10070 static void
10071 emit_library_info (MonoAotCompile *acfg)
10072 {
10073         // Only include for shared libraries linked directly from generated object.
10074         if (link_shared_library (acfg)) {
10075                 char    *name = NULL;
10076                 char    symbol [MAX_SYMBOL_SIZE];
10077
10078                 // Ask linker to export all global symbols.
10079                 emit_section_change (acfg, ".drectve", 0);
10080                 for (guint i = 0; i < acfg->globals->len; ++i) {
10081                         name = (char *)g_ptr_array_index (acfg->globals, i);
10082                         g_assert (name != NULL);
10083                         sprintf_s (symbol, MAX_SYMBOL_SIZE, " /EXPORT:%s", name);
10084                         emit_string (acfg, symbol);
10085                 }
10086
10087                 // Emit DLLMain function, needed by MSVC linker for DLL's.
10088                 // NOTE, DllMain should not go into exports above.
10089                 emit_section_change (acfg, ".text", 0);
10090                 emit_global (acfg, DLL_ENTRY_POINT, TRUE);
10091                 emit_label (acfg, DLL_ENTRY_POINT);
10092
10093                 // Simple implementation of DLLMain, just returning TRUE.
10094                 // For more information about DLLMain: https://msdn.microsoft.com/en-us/library/windows/desktop/ms682583(v=vs.85).aspx
10095                 fprintf (acfg->fp, "movl $1, %%eax\n");
10096                 fprintf (acfg->fp, "ret\n");
10097
10098                 // Inform linker about our dll entry function.
10099                 emit_section_change (acfg, ".drectve", 0);
10100                 emit_string (acfg, "/ENTRY:" DLL_ENTRY_POINT);
10101                 return;
10102         }
10103 }
10104
10105 #else
10106
10107 static inline void
10108 emit_library_info (MonoAotCompile *acfg)
10109 {
10110         return;
10111 }
10112 #endif
10113
10114 static void
10115 emit_globals (MonoAotCompile *acfg)
10116 {
10117         int i, table_size;
10118         guint32 hash;
10119         GPtrArray *table;
10120         char symbol [1024];
10121         GlobalsTableEntry *entry, *new_entry;
10122
10123         if (!acfg->aot_opts.static_link)
10124                 return;
10125
10126         if (acfg->aot_opts.llvm_only) {
10127                 g_assert (acfg->globals->len == 0);
10128                 return;
10129         }
10130
10131         /*
10132          * When static linking, we emit a table containing our globals.
10133          */
10134
10135         /*
10136          * Construct a chained hash table for mapping global names to their index in
10137          * the globals table.
10138          */
10139         table_size = g_spaced_primes_closest ((int)(acfg->globals->len * 1.5));
10140         table = g_ptr_array_sized_new (table_size);
10141         for (i = 0; i < table_size; ++i)
10142                 g_ptr_array_add (table, NULL);
10143         for (i = 0; i < acfg->globals->len; ++i) {
10144                 char *name = (char *)g_ptr_array_index (acfg->globals, i);
10145
10146                 hash = mono_metadata_str_hash (name) % table_size;
10147
10148                 /* FIXME: Allocate from the mempool */
10149                 new_entry = g_new0 (GlobalsTableEntry, 1);
10150                 new_entry->value = i;
10151
10152                 entry = (GlobalsTableEntry *)g_ptr_array_index (table, hash);
10153                 if (entry == NULL) {
10154                         new_entry->index = hash;
10155                         g_ptr_array_index (table, hash) = new_entry;
10156                 } else {
10157                         while (entry->next)
10158                                 entry = entry->next;
10159
10160                         entry->next = new_entry;
10161                         new_entry->index = table->len;
10162                         g_ptr_array_add (table, new_entry);
10163                 }
10164         }
10165
10166         /* Emit the table */
10167         sprintf (symbol, ".Lglobals_hash");
10168         emit_section_change (acfg, RODATA_SECT, 0);
10169         emit_alignment (acfg, 8);
10170         emit_label (acfg, symbol);
10171
10172         /* FIXME: Optimize memory usage */
10173         g_assert (table_size < 65000);
10174         emit_int16 (acfg, table_size);
10175         for (i = 0; i < table->len; ++i) {
10176                 GlobalsTableEntry *entry = (GlobalsTableEntry *)g_ptr_array_index (table, i);
10177
10178                 if (entry == NULL) {
10179                         emit_int16 (acfg, 0);
10180                         emit_int16 (acfg, 0);
10181                 } else {
10182                         emit_int16 (acfg, entry->value + 1);
10183                         if (entry->next)
10184                                 emit_int16 (acfg, entry->next->index);
10185                         else
10186                                 emit_int16 (acfg, 0);
10187                 }
10188         }
10189
10190         /* Emit the names */
10191         for (i = 0; i < acfg->globals->len; ++i) {
10192                 char *name = (char *)g_ptr_array_index (acfg->globals, i);
10193
10194                 sprintf (symbol, "name_%d", i);
10195                 emit_section_change (acfg, RODATA_SECT, 1);
10196 #ifdef TARGET_MACH
10197                 emit_alignment (acfg, 4);
10198 #endif
10199                 emit_label (acfg, symbol);
10200                 emit_string (acfg, name);
10201         }
10202
10203         /* Emit the globals table */
10204         sprintf (symbol, "globals");
10205         emit_section_change (acfg, ".data", 0);
10206         /* This is not a global, since it is accessed by the init function */
10207         emit_alignment (acfg, 8);
10208         emit_info_symbol (acfg, symbol);
10209
10210         sprintf (symbol, "%sglobals_hash", acfg->temp_prefix);
10211         emit_pointer (acfg, symbol);
10212
10213         for (i = 0; i < acfg->globals->len; ++i) {
10214                 char *name = (char *)g_ptr_array_index (acfg->globals, i);
10215
10216                 sprintf (symbol, "name_%d", i);
10217                 emit_pointer (acfg, symbol);
10218
10219                 g_assert (strlen (name) < sizeof (symbol));
10220                 sprintf (symbol, "%s", name);
10221                 emit_pointer (acfg, symbol);
10222         }
10223         /* Null terminate the table */
10224         emit_int32 (acfg, 0);
10225         emit_int32 (acfg, 0);
10226 }
10227
10228 static void
10229 emit_mem_end (MonoAotCompile *acfg)
10230 {
10231         char symbol [128];
10232
10233         if (acfg->aot_opts.llvm_only)
10234                 return;
10235
10236         sprintf (symbol, "mem_end");
10237         emit_section_change (acfg, ".text", 1);
10238         emit_alignment_code (acfg, 8);
10239         emit_label (acfg, symbol);
10240 }
10241
10242 static void
10243 init_aot_file_info (MonoAotCompile *acfg, MonoAotFileInfo *info)
10244 {
10245         int i;
10246
10247         info->version = MONO_AOT_FILE_VERSION;
10248         info->plt_got_offset_base = acfg->plt_got_offset_base;
10249         info->got_size = acfg->got_offset * sizeof (gpointer);
10250         info->plt_size = acfg->plt_offset;
10251         info->nmethods = acfg->nmethods;
10252         info->flags = acfg->flags;
10253         info->opts = acfg->opts;
10254         info->simd_opts = acfg->simd_opts;
10255         info->gc_name_index = acfg->gc_name_offset;
10256         info->datafile_size = acfg->datafile_offset;
10257         for (i = 0; i < MONO_AOT_TABLE_NUM; ++i)
10258                 info->table_offsets [i] = acfg->table_offsets [i];
10259         for (i = 0; i < MONO_AOT_TRAMP_NUM; ++i)
10260                 info->num_trampolines [i] = acfg->num_trampolines [i];
10261         for (i = 0; i < MONO_AOT_TRAMP_NUM; ++i)
10262                 info->trampoline_got_offset_base [i] = acfg->trampoline_got_offset_base [i];
10263         for (i = 0; i < MONO_AOT_TRAMP_NUM; ++i)
10264                 info->trampoline_size [i] = acfg->trampoline_size [i];
10265         info->num_rgctx_fetch_trampolines = acfg->aot_opts.nrgctx_fetch_trampolines;
10266
10267         info->double_align = MONO_ABI_ALIGNOF (double);
10268         info->long_align = MONO_ABI_ALIGNOF (gint64);
10269         info->generic_tramp_num = MONO_TRAMPOLINE_NUM;
10270         info->tramp_page_size = acfg->tramp_page_size;
10271         info->nshared_got_entries = acfg->nshared_got_entries;
10272         for (i = 0; i < MONO_AOT_TRAMP_NUM; ++i)
10273                 info->tramp_page_code_offsets [i] = acfg->tramp_page_code_offsets [i];
10274
10275         memcpy(&info->aotid, acfg->image->aotid, 16);
10276 }
10277
10278 static void
10279 emit_aot_file_info (MonoAotCompile *acfg, MonoAotFileInfo *info)
10280 {
10281         char symbol [MAX_SYMBOL_SIZE];
10282         int i, sindex;
10283         const char **symbols;
10284
10285         symbols = g_new0 (const char *, MONO_AOT_FILE_INFO_NUM_SYMBOLS);
10286         sindex = 0;
10287         symbols [sindex ++] = acfg->got_symbol;
10288         if (acfg->llvm) {
10289                 symbols [sindex ++] = g_strdup_printf ("%s%s", acfg->user_symbol_prefix, acfg->llvm_got_symbol);
10290                 symbols [sindex ++] = acfg->llvm_eh_frame_symbol;
10291         } else {
10292                 symbols [sindex ++] = NULL;
10293                 symbols [sindex ++] = NULL;
10294         }
10295         /* llvm_get_method */
10296         symbols [sindex ++] = NULL;
10297         /* llvm_get_unbox_tramp */
10298         symbols [sindex ++] = NULL;
10299         if (!acfg->aot_opts.llvm_only) {
10300                 symbols [sindex ++] = "jit_code_start";
10301                 symbols [sindex ++] = "jit_code_end";
10302                 symbols [sindex ++] = "method_addresses";
10303         } else {
10304                 symbols [sindex ++] = NULL;
10305                 symbols [sindex ++] = NULL;
10306                 symbols [sindex ++] = NULL;
10307         }
10308
10309         if (acfg->data_outfile) {
10310                 for (i = 0; i < MONO_AOT_TABLE_NUM; ++i)
10311                         symbols [sindex ++] = NULL;
10312         } else {
10313                 symbols [sindex ++] = "blob";
10314                 symbols [sindex ++] = "class_name_table";
10315                 symbols [sindex ++] = "class_info_offsets";
10316                 symbols [sindex ++] = "method_info_offsets";
10317                 symbols [sindex ++] = "ex_info_offsets";
10318                 symbols [sindex ++] = "extra_method_info_offsets";
10319                 symbols [sindex ++] = "extra_method_table";
10320                 symbols [sindex ++] = "got_info_offsets";
10321                 if (acfg->llvm)
10322                         symbols [sindex ++] = "llvm_got_info_offsets";
10323                 else
10324                         symbols [sindex ++] = NULL;
10325                 symbols [sindex ++] = "image_table";
10326                 symbols [sindex ++] = "weak_field_indexes";
10327         }
10328
10329         symbols [sindex ++] = "mem_end";
10330         symbols [sindex ++] = "assembly_guid";
10331         symbols [sindex ++] = "runtime_version";
10332         if (acfg->num_trampoline_got_entries) {
10333                 symbols [sindex ++] = "specific_trampolines";
10334                 symbols [sindex ++] = "static_rgctx_trampolines";
10335                 symbols [sindex ++] = "imt_trampolines";
10336                 symbols [sindex ++] = "gsharedvt_arg_trampolines";
10337         } else {
10338                 symbols [sindex ++] = NULL;
10339                 symbols [sindex ++] = NULL;
10340                 symbols [sindex ++] = NULL;
10341                 symbols [sindex ++] = NULL;
10342         }
10343         if (acfg->aot_opts.static_link) {
10344                 symbols [sindex ++] = "globals";
10345         } else {
10346                 symbols [sindex ++] = NULL;
10347         }
10348         symbols [sindex ++] = "assembly_name";
10349         symbols [sindex ++] = "plt";
10350         symbols [sindex ++] = "plt_end";
10351         symbols [sindex ++] = "unwind_info";
10352         if (!acfg->aot_opts.llvm_only) {
10353                 symbols [sindex ++] = "unbox_trampolines";
10354                 symbols [sindex ++] = "unbox_trampolines_end";
10355                 symbols [sindex ++] = "unbox_trampoline_addresses";
10356         } else {
10357                 symbols [sindex ++] = NULL;
10358                 symbols [sindex ++] = NULL;
10359                 symbols [sindex ++] = NULL;
10360         }
10361
10362         g_assert (sindex == MONO_AOT_FILE_INFO_NUM_SYMBOLS);
10363
10364         sprintf (symbol, "%smono_aot_file_info", acfg->user_symbol_prefix);
10365         emit_section_change (acfg, ".data", 0);
10366         emit_alignment (acfg, 8);
10367         emit_label (acfg, symbol);
10368         if (!acfg->aot_opts.static_link)
10369                 emit_global (acfg, symbol, FALSE);
10370
10371         /* The data emitted here must match MonoAotFileInfo. */
10372
10373         emit_int32 (acfg, info->version);
10374         emit_int32 (acfg, info->dummy);
10375
10376         /*
10377          * We emit pointers to our data structures instead of emitting global symbols which
10378          * point to them, to reduce the number of globals, and because using globals leads to
10379          * various problems (i.e. arm/thumb).
10380          */
10381         for (i = 0; i < MONO_AOT_FILE_INFO_NUM_SYMBOLS; ++i)
10382                 emit_pointer (acfg, symbols [i]);
10383
10384         emit_int32 (acfg, info->plt_got_offset_base);
10385         emit_int32 (acfg, info->got_size);
10386         emit_int32 (acfg, info->plt_size);
10387         emit_int32 (acfg, info->nmethods);
10388         emit_int32 (acfg, info->flags);
10389         emit_int32 (acfg, info->opts);
10390         emit_int32 (acfg, info->simd_opts);
10391         emit_int32 (acfg, info->gc_name_index);
10392         emit_int32 (acfg, info->num_rgctx_fetch_trampolines);
10393         emit_int32 (acfg, info->double_align);
10394         emit_int32 (acfg, info->long_align);
10395         emit_int32 (acfg, info->generic_tramp_num);
10396         emit_int32 (acfg, info->tramp_page_size);
10397         emit_int32 (acfg, info->nshared_got_entries);
10398         emit_int32 (acfg, info->datafile_size);
10399
10400         for (i = 0; i < MONO_AOT_TABLE_NUM; ++i)
10401                 emit_int32 (acfg, info->table_offsets [i]);
10402         for (i = 0; i < MONO_AOT_TRAMP_NUM; ++i)
10403                 emit_int32 (acfg, info->num_trampolines [i]);
10404         for (i = 0; i < MONO_AOT_TRAMP_NUM; ++i)
10405                 emit_int32 (acfg, info->trampoline_got_offset_base [i]);
10406         for (i = 0; i < MONO_AOT_TRAMP_NUM; ++i)
10407                 emit_int32 (acfg, info->trampoline_size [i]);
10408         for (i = 0; i < MONO_AOT_TRAMP_NUM; ++i)
10409                 emit_int32 (acfg, info->tramp_page_code_offsets [i]);
10410
10411         emit_bytes (acfg, info->aotid, 16);
10412
10413         if (acfg->aot_opts.static_link) {
10414                 emit_global_inner (acfg, acfg->static_linking_symbol, FALSE);
10415                 emit_alignment (acfg, sizeof (gpointer));
10416                 emit_label (acfg, acfg->static_linking_symbol);
10417                 emit_pointer_2 (acfg, acfg->user_symbol_prefix, "mono_aot_file_info");
10418         }
10419 }
10420
10421 /*
10422  * Emit a structure containing all the information not stored elsewhere.
10423  */
10424 static void
10425 emit_file_info (MonoAotCompile *acfg)
10426 {
10427         char *build_info;
10428         MonoAotFileInfo *info;
10429
10430         if (acfg->aot_opts.bind_to_runtime_version) {
10431                 build_info = mono_get_runtime_build_info ();
10432                 emit_string_symbol (acfg, "runtime_version", build_info);
10433                 g_free (build_info);
10434         } else {
10435                 emit_string_symbol (acfg, "runtime_version", "");
10436         }
10437
10438         emit_string_symbol (acfg, "assembly_guid" , acfg->image->guid);
10439
10440         /* Emit a string holding the assembly name */
10441         emit_string_symbol (acfg, "assembly_name", acfg->image->assembly->aname.name);
10442
10443         info = g_new0 (MonoAotFileInfo, 1);
10444         init_aot_file_info (acfg, info);
10445
10446         if (acfg->aot_opts.static_link) {
10447                 char symbol [MAX_SYMBOL_SIZE];
10448                 char *p;
10449
10450                 /*
10451                  * Emit a global symbol which can be passed by an embedding app to
10452                  * mono_aot_register_module (). The symbol points to a pointer to the the file info
10453                  * structure.
10454                  */
10455                 sprintf (symbol, "%smono_aot_module_%s_info", acfg->user_symbol_prefix, acfg->image->assembly->aname.name);
10456
10457                 /* Get rid of characters which cannot occur in symbols */
10458                 p = symbol;
10459                 for (p = symbol; *p; ++p) {
10460                         if (!(isalnum (*p) || *p == '_'))
10461                                 *p = '_';
10462                 }
10463                 acfg->static_linking_symbol = g_strdup (symbol);
10464         }
10465
10466         if (acfg->llvm)
10467                 mono_llvm_emit_aot_file_info (info, acfg->has_jitted_code);
10468         else
10469                 emit_aot_file_info (acfg, info);
10470 }
10471
10472 static void
10473 emit_blob (MonoAotCompile *acfg)
10474 {
10475         acfg->blob_closed = TRUE;
10476
10477         emit_aot_data (acfg, MONO_AOT_TABLE_BLOB, "blob", (guint8*)acfg->blob.data, acfg->blob.index);
10478 }
10479
10480 static void
10481 emit_objc_selectors (MonoAotCompile *acfg)
10482 {
10483         int i;
10484         char symbol [128];
10485
10486         if (!acfg->objc_selectors || acfg->objc_selectors->len == 0)
10487                 return;
10488
10489         /*
10490          * From
10491          * cat > foo.m << EOF
10492          * void *ret ()
10493          * {
10494          * return @selector(print:);
10495          * }
10496          * EOF
10497          */
10498
10499         mono_img_writer_emit_unset_mode (acfg->w);
10500         g_assert (acfg->fp);
10501         fprintf (acfg->fp, ".section    __DATA,__objc_selrefs,literal_pointers,no_dead_strip\n");
10502         fprintf (acfg->fp, ".align      3\n");
10503         for (i = 0; i < acfg->objc_selectors->len; ++i) {
10504                 sprintf (symbol, "L_OBJC_SELECTOR_REFERENCES_%d", i);
10505                 emit_label (acfg, symbol);
10506                 sprintf (symbol, "L_OBJC_METH_VAR_NAME_%d", i);
10507                 emit_pointer (acfg, symbol);
10508
10509         }
10510         fprintf (acfg->fp, ".section    __TEXT,__cstring,cstring_literals\n");
10511         for (i = 0; i < acfg->objc_selectors->len; ++i) {
10512                 fprintf (acfg->fp, "L_OBJC_METH_VAR_NAME_%d:\n", i);
10513                 fprintf (acfg->fp, ".asciz \"%s\"\n", (char*)g_ptr_array_index (acfg->objc_selectors, i));
10514         }
10515
10516         fprintf (acfg->fp, ".section    __DATA,__objc_imageinfo,regular,no_dead_strip\n");
10517         fprintf (acfg->fp, ".align      3\n");
10518         fprintf (acfg->fp, "L_OBJC_IMAGE_INFO:\n");
10519         fprintf (acfg->fp, ".long       0\n");
10520         fprintf (acfg->fp, ".long       16\n");
10521 }
10522
10523 static void
10524 emit_dwarf_info (MonoAotCompile *acfg)
10525 {
10526 #ifdef EMIT_DWARF_INFO
10527         int i;
10528         char symbol2 [128];
10529
10530         /* DIEs for methods */
10531         for (i = 0; i < acfg->nmethods; ++i) {
10532                 MonoCompile *cfg = acfg->cfgs [i];
10533
10534                 if (ignore_cfg (cfg))
10535                         continue;
10536
10537                 // FIXME: LLVM doesn't define .Lme_...
10538                 if (cfg->compile_llvm)
10539                         continue;
10540
10541                 sprintf (symbol2, "%sme_%x", acfg->temp_prefix, i);
10542
10543                 mono_dwarf_writer_emit_method (acfg->dwarf, cfg, cfg->method, cfg->asm_symbol, symbol2, cfg->asm_debug_symbol, (guint8 *)cfg->jit_info->code_start, cfg->jit_info->code_size, cfg->args, cfg->locals, cfg->unwind_ops, mono_debug_find_method (cfg->jit_info->d.method, mono_domain_get ()));
10544         }
10545 #endif
10546 }
10547
10548 #ifdef EMIT_WIN32_CODEVIEW_INFO
10549 typedef struct _CodeViewSubSectionData
10550 {
10551         gchar *start_section;
10552         gchar *end_section;
10553         gchar *start_section_record;
10554         gchar *end_section_record;
10555         int section_type;
10556         int section_record_type;
10557         int section_id;
10558 } CodeViewSubsectionData;
10559
10560 typedef struct _CodeViewCompilerVersion
10561 {
10562         gint major;
10563         gint minor;
10564         gint revision;
10565         gint patch;
10566 } CodeViewCompilerVersion;
10567
10568 #define CODEVIEW_SUBSECTION_SYMBOL_TYPE 0xF1
10569 #define CODEVIEW_SUBSECTION_RECORD_COMPILER_TYPE 0x113c
10570 #define CODEVIEW_SUBSECTION_RECORD_FUNCTION_START_TYPE 0x1147
10571 #define CODEVIEW_SUBSECTION_RECORD_FUNCTION_END_TYPE 0x114F
10572 #define CODEVIEW_CSHARP_LANGUAGE_TYPE 0x0A
10573 #define CODEVIEW_CPU_TYPE 0x0
10574 #define CODEVIEW_MAGIC_HEADER 0x4
10575
10576 static void
10577 codeview_clear_subsection_data (CodeViewSubsectionData *section_data)
10578 {
10579         g_free (section_data->start_section);
10580         g_free (section_data->end_section);
10581         g_free (section_data->start_section_record);
10582         g_free (section_data->end_section_record);
10583
10584         memset (section_data, 0, sizeof (CodeViewSubsectionData));
10585 }
10586
10587 static void
10588 codeview_parse_compiler_version (gchar *version, CodeViewCompilerVersion *data)
10589 {
10590         gint values[4] = { 0 };
10591         gint *value = values;
10592
10593         while (*version && (value < values + G_N_ELEMENTS (values))) {
10594                 if (isdigit (*version)) {
10595                         *value *= 10;
10596                         *value += *version - '0';
10597                 }
10598                 else if (*version == '.') {
10599                         value++;
10600                 }
10601
10602                 version++;
10603         }
10604
10605         data->major = values[0];
10606         data->minor = values[1];
10607         data->revision = values[2];
10608         data->patch = values[3];
10609 }
10610
10611 static void
10612 emit_codeview_start_subsection (MonoAotCompile *acfg, int section_id, int section_type, int section_record_type, CodeViewSubsectionData *section_data)
10613 {
10614         // Starting a new subsection, clear old data.
10615         codeview_clear_subsection_data (section_data);
10616
10617         // Keep subsection data.
10618         section_data->section_id = section_id;
10619         section_data->section_type = section_type;
10620         section_data->section_record_type = section_record_type;
10621
10622         // Allocate all labels used in subsection.
10623         section_data->start_section = g_strdup_printf ("%scvs_%d", acfg->temp_prefix, section_data->section_id);
10624         section_data->end_section = g_strdup_printf ("%scvse_%d", acfg->temp_prefix, section_data->section_id);
10625         section_data->start_section_record = g_strdup_printf ("%scvsr_%d", acfg->temp_prefix, section_data->section_id);
10626         section_data->end_section_record = g_strdup_printf ("%scvsre_%d", acfg->temp_prefix, section_data->section_id);
10627
10628         // Subsection type, function symbol.
10629         emit_int32 (acfg, section_data->section_type);
10630
10631         // Subsection size.
10632         emit_symbol_diff (acfg, section_data->end_section, section_data->start_section, 0);
10633         emit_label (acfg, section_data->start_section);
10634
10635         // Subsection record size.
10636         fprintf (acfg->fp, "\t.word %s - %s\n", section_data->end_section_record, section_data->start_section_record);
10637         emit_label (acfg, section_data->start_section_record);
10638
10639         // Subsection record type.
10640         emit_int16 (acfg, section_record_type);
10641 }
10642
10643 static void
10644 emit_codeview_end_subsection (MonoAotCompile *acfg, CodeViewSubsectionData *section_data, int *section_id)
10645 {
10646         g_assert (section_data->start_section);
10647         g_assert (section_data->end_section);
10648         g_assert (section_data->start_section_record);
10649         g_assert (section_data->end_section_record);
10650
10651         emit_label (acfg, section_data->end_section_record);
10652
10653         if (section_data->section_record_type == CODEVIEW_SUBSECTION_RECORD_FUNCTION_START_TYPE) {
10654                 // Emit record length.
10655                 emit_int16 (acfg, 2);
10656
10657                 // Emit specific record type end.
10658                 emit_int16 (acfg, CODEVIEW_SUBSECTION_RECORD_FUNCTION_END_TYPE);
10659         }
10660
10661         emit_label (acfg, section_data->end_section);
10662
10663         // Next subsection needs to be 4 byte aligned.
10664         emit_alignment (acfg, 4);
10665
10666         *section_id = section_data->section_id + 1;
10667         codeview_clear_subsection_data (section_data);
10668 }
10669
10670 inline static void
10671 emit_codeview_start_symbol_subsection (MonoAotCompile *acfg, int section_id, int section_record_type, CodeViewSubsectionData *section_data)
10672 {
10673         emit_codeview_start_subsection (acfg, section_id, CODEVIEW_SUBSECTION_SYMBOL_TYPE, section_record_type, section_data);
10674 }
10675
10676 inline static void
10677 emit_codeview_end_symbol_subsection (MonoAotCompile *acfg, CodeViewSubsectionData *section_data, int *section_id)
10678 {
10679         emit_codeview_end_subsection (acfg, section_data, section_id);
10680 }
10681
10682 static void
10683 emit_codeview_compiler_info (MonoAotCompile *acfg, int *section_id)
10684 {
10685         CodeViewSubsectionData section_data = { 0 };
10686         CodeViewCompilerVersion compiler_version = { 0 };
10687
10688         // Start new compiler record subsection.
10689         emit_codeview_start_symbol_subsection (acfg, *section_id, CODEVIEW_SUBSECTION_RECORD_COMPILER_TYPE, &section_data);
10690
10691         emit_int32 (acfg, CODEVIEW_CSHARP_LANGUAGE_TYPE);
10692         emit_int16 (acfg, CODEVIEW_CPU_TYPE);
10693
10694         // Get compiler version information.
10695         codeview_parse_compiler_version (VERSION, &compiler_version);
10696
10697         // Compiler frontend version, 4 digits.
10698         emit_int16 (acfg, compiler_version.major);
10699         emit_int16 (acfg, compiler_version.minor);
10700         emit_int16 (acfg, compiler_version.revision);
10701         emit_int16 (acfg, compiler_version.patch);
10702
10703         // Compiler backend version, 4 digits (currently same as frontend).
10704         emit_int16 (acfg, compiler_version.major);
10705         emit_int16 (acfg, compiler_version.minor);
10706         emit_int16 (acfg, compiler_version.revision);
10707         emit_int16 (acfg, compiler_version.patch);
10708
10709         // Compiler string.
10710         emit_string (acfg, "Mono AOT compiler");
10711
10712         // Done with section.
10713         emit_codeview_end_symbol_subsection (acfg, &section_data, section_id);
10714 }
10715
10716 static void
10717 emit_codeview_function_info (MonoAotCompile *acfg, MonoMethod *method, int *section_id, gchar *symbol, gchar *symbol_start, gchar *symbol_end)
10718 {
10719         CodeViewSubsectionData section_data = { 0 };
10720         gchar *full_method_name = NULL;
10721
10722         // Start new function record subsection.
10723         emit_codeview_start_symbol_subsection (acfg, *section_id, CODEVIEW_SUBSECTION_RECORD_FUNCTION_START_TYPE, &section_data);
10724
10725         // Emit 3 int 0 byte padding, currently not used.
10726         emit_zero_bytes (acfg, sizeof (int) * 3);
10727
10728         // Emit size of function.
10729         emit_symbol_diff (acfg, symbol_end, symbol_start, 0);
10730
10731         // Emit 3 int 0 byte padding, currently not used.
10732         emit_zero_bytes (acfg, sizeof (int) * 3);
10733
10734         // Emit reallocation info.
10735         fprintf (acfg->fp, "\t.secrel32 %s\n", symbol);
10736         fprintf (acfg->fp, "\t.secidx %s\n", symbol);
10737
10738         // Emit flag, currently not used.
10739         emit_zero_bytes (acfg, 1);
10740
10741         // Emit function name, exclude signature since it should be described by own metadata.
10742         full_method_name = mono_method_full_name (method, FALSE);
10743         emit_string (acfg, full_method_name ? full_method_name : "");
10744         g_free (full_method_name);
10745
10746         // Done with section.
10747         emit_codeview_end_symbol_subsection (acfg, &section_data, section_id);
10748 }
10749
10750 static void
10751 emit_codeview_info (MonoAotCompile *acfg)
10752 {
10753         int i;
10754         int section_id = 0;
10755         gchar symbol_buffer[MAX_SYMBOL_SIZE];
10756
10757         // Emit codeview debug info section
10758         emit_section_change (acfg, ".debug$S", 0);
10759
10760         // Emit magic header.
10761         emit_int32 (acfg, CODEVIEW_MAGIC_HEADER);
10762
10763         emit_codeview_compiler_info (acfg, &section_id);
10764
10765         for (i = 0; i < acfg->nmethods; ++i) {
10766                 MonoCompile *cfg = acfg->cfgs[i];
10767
10768                 if (!cfg)
10769                         continue;
10770
10771                 int ret = g_snprintf (symbol_buffer, G_N_ELEMENTS (symbol_buffer), "%sme_%x", acfg->temp_prefix, i);
10772                 if (ret > 0 && ret < G_N_ELEMENTS (symbol_buffer))
10773                         emit_codeview_function_info (acfg, cfg->method, &section_id, cfg->asm_debug_symbol, cfg->asm_symbol, symbol_buffer);
10774         }
10775 }
10776 #else
10777 static void
10778 emit_codeview_info (MonoAotCompile *acfg)
10779 {
10780 }
10781 #endif /* EMIT_WIN32_CODEVIEW_INFO */
10782
10783 #ifdef EMIT_WIN32_UNWIND_INFO
10784 static UnwindInfoSectionCacheItem *
10785 get_cached_unwind_info_section_item_win32 (MonoAotCompile *acfg, const char *function_start, const char *function_end, GSList *unwind_ops)
10786 {
10787         UnwindInfoSectionCacheItem *item = NULL;
10788
10789         if (!acfg->unwind_info_section_cache)
10790                 acfg->unwind_info_section_cache = g_list_alloc ();
10791
10792         PUNWIND_INFO unwind_info = mono_arch_unwindinfo_alloc_unwind_info (unwind_ops);
10793
10794         // Search for unwind info in cache.
10795         GList *list = acfg->unwind_info_section_cache;
10796         int list_size = 0;
10797         while (list && list->data) {
10798                 item = (UnwindInfoSectionCacheItem*)list->data;
10799                 if (!memcmp (unwind_info, item->unwind_info, sizeof (UNWIND_INFO))) {
10800                         // Cache hit, return cached item.
10801                         return item;
10802                 }
10803                 list = list->next;
10804                 list_size++;
10805         }
10806
10807         // Add to cache.
10808         if (acfg->unwind_info_section_cache) {
10809                 item = g_new0 (UnwindInfoSectionCacheItem, 1);
10810                 if (item) {
10811                         // Format .xdata section label for function, used to get unwind info address RVA.
10812                         // Since the unwind info is similar for most functions, the symbol will be reused.
10813                         item->xdata_section_label = g_strdup_printf ("%sunwind_%d", acfg->temp_prefix, list_size);
10814
10815                         // Cache unwind info data, used when checking cache for matching unwind info. NOTE, cache takes
10816                         //over ownership of unwind info.
10817                         item->unwind_info = unwind_info;
10818
10819                         // Needs to be emitted once.
10820                         item->xdata_section_emitted = FALSE;
10821
10822                         // Prepend to beginning of list to speed up inserts.
10823                         acfg->unwind_info_section_cache = g_list_prepend (acfg->unwind_info_section_cache, (gpointer)item);
10824                 }
10825         }
10826
10827         return item;
10828 }
10829
10830 static void
10831 free_unwind_info_section_cache_win32 (MonoAotCompile *acfg)
10832 {
10833         GList *list = acfg->unwind_info_section_cache;
10834
10835         while (list) {
10836                 UnwindInfoSectionCacheItem *item = (UnwindInfoSectionCacheItem *)list->data;
10837                 if (item) {
10838                         g_free (item->xdata_section_label);
10839                         mono_arch_unwindinfo_free_unwind_info (item->unwind_info);
10840
10841                         g_free (item);
10842                         list->data = NULL;
10843                 }
10844
10845                 list = list->next;
10846         }
10847
10848         g_list_free (acfg->unwind_info_section_cache);
10849         acfg->unwind_info_section_cache = NULL;
10850 }
10851
10852 static void
10853 emit_unwind_info_data_win32 (MonoAotCompile *acfg, PUNWIND_INFO unwind_info)
10854 {
10855         // Emit the unwind info struct.
10856         emit_bytes (acfg, (guint8*)unwind_info, sizeof (UNWIND_INFO) - (sizeof (UNWIND_CODE) * MONO_MAX_UNWIND_CODES));
10857
10858         // Emit all unwind codes encoded in unwind info struct.
10859         PUNWIND_CODE current_unwind_node = &unwind_info->UnwindCode[MONO_MAX_UNWIND_CODES - unwind_info->CountOfCodes];
10860         PUNWIND_CODE last_unwind_node = &unwind_info->UnwindCode[MONO_MAX_UNWIND_CODES];
10861
10862         while (current_unwind_node < last_unwind_node) {
10863                 guint8 node_count = 0;
10864                 switch (current_unwind_node->UnwindOp) {
10865                 case UWOP_PUSH_NONVOL:
10866                 case UWOP_ALLOC_SMALL:
10867                 case UWOP_SET_FPREG:
10868                 case UWOP_PUSH_MACHFRAME:
10869                         node_count = 1;
10870                         break;
10871                 case UWOP_SAVE_NONVOL:
10872                 case UWOP_SAVE_XMM128:
10873                         node_count = 2;
10874                         break;
10875                 case UWOP_SAVE_NONVOL_FAR:
10876                 case UWOP_SAVE_XMM128_FAR:
10877                         node_count = 3;
10878                         break;
10879                 case UWOP_ALLOC_LARGE:
10880                         if (current_unwind_node->OpInfo == 0)
10881                                 node_count = 2;
10882                         else
10883                                 node_count = 3;
10884                         break;
10885                 default:
10886                         g_assert (!"Unknown unwind opcode.");
10887                 }
10888
10889                 while (node_count > 0) {
10890                         g_assert (current_unwind_node < last_unwind_node);
10891
10892                         //Emit current node.
10893                         emit_bytes (acfg, (guint8*)current_unwind_node, sizeof (UNWIND_CODE));
10894
10895                         node_count--;
10896                         current_unwind_node++;
10897                 }
10898         }
10899 }
10900
10901 // Emit unwind info sections for each function. Unwind info on Windows x64 is emitted into two different sections.
10902 // .pdata includes the serialized DWORD aligned RVA's of function start, end and address of serialized
10903 // UNWIND_INFO struct emitted into .xdata, see https://msdn.microsoft.com/en-us/library/ft9x1kdx.aspx.
10904 // .xdata section includes DWORD aligned serialized version of UNWIND_INFO struct, https://msdn.microsoft.com/en-us/library/ddssxxy8.aspx.
10905 static void
10906 emit_unwind_info_sections_win32 (MonoAotCompile *acfg, const char *function_start, const char *function_end, GSList *unwind_ops)
10907 {
10908         char *pdata_section_label = NULL;
10909
10910         int temp_prefix_len = (acfg->temp_prefix != NULL) ? strlen (acfg->temp_prefix) : 0;
10911         if (strncmp (function_start, acfg->temp_prefix, temp_prefix_len)) {
10912                 temp_prefix_len = 0;
10913         }
10914
10915         // Format .pdata section label for function.
10916         pdata_section_label = g_strdup_printf ("%spdata_%s", acfg->temp_prefix, function_start + temp_prefix_len);
10917
10918         UnwindInfoSectionCacheItem *cache_item = get_cached_unwind_info_section_item_win32 (acfg, function_start, function_end, unwind_ops);
10919         g_assert (cache_item && cache_item->xdata_section_label && cache_item->unwind_info);
10920
10921         // Emit .pdata section.
10922         emit_section_change (acfg, ".pdata", 0);
10923         emit_alignment (acfg, sizeof (DWORD));
10924         emit_label (acfg, pdata_section_label);
10925
10926         // Emit function start address RVA.
10927         fprintf (acfg->fp, "\t.long %s@IMGREL\n", function_start);
10928
10929         // Emit function end address RVA.
10930         fprintf (acfg->fp, "\t.long %s@IMGREL\n", function_end);
10931
10932         // Emit unwind info address RVA.
10933         fprintf (acfg->fp, "\t.long %s@IMGREL\n", cache_item->xdata_section_label);
10934
10935         if (!cache_item->xdata_section_emitted) {
10936                 // Emit .xdata section.
10937                 emit_section_change (acfg, ".xdata", 0);
10938                 emit_alignment (acfg, sizeof (DWORD));
10939                 emit_label (acfg, cache_item->xdata_section_label);
10940
10941                 // Emit unwind info into .xdata section.
10942                 emit_unwind_info_data_win32 (acfg, cache_item->unwind_info);
10943                 cache_item->xdata_section_emitted = TRUE;
10944         }
10945
10946         g_free (pdata_section_label);
10947 }
10948 #endif
10949
10950 static gboolean
10951 collect_methods (MonoAotCompile *acfg)
10952 {
10953         int mindex, i;
10954         MonoImage *image = acfg->image;
10955
10956         /* Collect methods */
10957         for (i = 0; i < image->tables [MONO_TABLE_METHOD].rows; ++i) {
10958                 ERROR_DECL (error);
10959                 MonoMethod *method;
10960                 guint32 token = MONO_TOKEN_METHOD_DEF | (i + 1);
10961
10962                 method = mono_get_method_checked (acfg->image, token, NULL, NULL, error);
10963
10964                 if (!method) {
10965                         aot_printerrf (acfg, "Failed to load method 0x%x from '%s' due to %s.\n", token, image->name, mono_error_get_message (error));
10966                         aot_printerrf (acfg, "Run with MONO_LOG_LEVEL=debug for more information.\n");
10967                         mono_error_cleanup (error);
10968                         return FALSE;
10969                 }
10970
10971                 /* Load all methods eagerly to skip the slower lazy loading code */
10972                 mono_class_setup_methods (method->klass);
10973
10974                 if (mono_aot_mode_is_full (&acfg->aot_opts) && method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) {
10975                         /* Compile the wrapper instead */
10976                         /* We do this here instead of add_wrappers () because it is easy to do it here */
10977                         MonoMethod *wrapper = mono_marshal_get_native_wrapper (method, TRUE, TRUE);
10978                         method = wrapper;
10979                 }
10980
10981                 /* FIXME: Some mscorlib methods don't have debug info */
10982                 /*
10983                 if (acfg->aot_opts.soft_debug && !method->wrapper_type) {
10984                         if (!((method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
10985                                   (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
10986                                   (method->flags & METHOD_ATTRIBUTE_ABSTRACT) ||
10987                                   (method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL))) {
10988                                 if (!mono_debug_lookup_method (method)) {
10989                                         fprintf (stderr, "Method %s has no debug info, probably the .mdb file for the assembly is missing.\n", mono_method_get_full_name (method));
10990                                         exit (1);
10991                                 }
10992                         }
10993                 }
10994                 */
10995
10996                 if (method->is_generic || mono_class_is_gtd (method->klass)) {
10997                         /* Compile the ref shared version instead */
10998                         method = mini_get_shared_method_full (method, SHARE_MODE_NONE, error);
10999                         if (!method) {
11000                                 aot_printerrf (acfg, "Failed to load method 0x%x from '%s' due to %s.\n", token, image->name, mono_error_get_message (error));
11001                                 aot_printerrf (acfg, "Run with MONO_LOG_LEVEL=debug for more information.\n");
11002                                 mono_error_cleanup (error);
11003                                 return FALSE;
11004                         }
11005                 }
11006
11007                 /* Since we add the normal methods first, their index will be equal to their zero based token index */
11008                 add_method_with_index (acfg, method, i, FALSE);
11009                 acfg->method_index ++;
11010         }
11011
11012         /* gsharedvt methods */
11013         for (mindex = 0; mindex < image->tables [MONO_TABLE_METHOD].rows; ++mindex) {
11014                 ERROR_DECL (error);
11015                 MonoMethod *method;
11016                 guint32 token = MONO_TOKEN_METHOD_DEF | (mindex + 1);
11017
11018                 if (!(acfg->opts & MONO_OPT_GSHAREDVT))
11019                         continue;
11020
11021                 method = mono_get_method_checked (acfg->image, token, NULL, NULL, error);
11022                 report_loader_error (acfg, error, TRUE, "Failed to load method token 0x%x due to %s\n", i, mono_error_get_message (error));
11023
11024                 if (method->is_generic || mono_class_is_gtd (method->klass)) {
11025                         MonoMethod *gshared;
11026
11027                         gshared = mini_get_shared_method_full (method, SHARE_MODE_GSHAREDVT, error);
11028                         mono_error_assert_ok (error);
11029
11030                         add_extra_method (acfg, gshared);
11031                 }
11032         }
11033
11034         if (mono_aot_mode_is_full (&acfg->aot_opts) || mono_aot_mode_is_hybrid (&acfg->aot_opts))
11035                 add_generic_instances (acfg);
11036
11037         if (mono_aot_mode_is_full (&acfg->aot_opts))
11038                 add_wrappers (acfg);
11039         return TRUE;
11040 }
11041
11042 static void
11043 compile_methods (MonoAotCompile *acfg)
11044 {
11045         int i, methods_len;
11046
11047         if (acfg->aot_opts.nthreads > 0) {
11048                 GPtrArray *frag;
11049                 int len, j;
11050                 GPtrArray *threads;
11051                 MonoThreadHandle *thread_handle;
11052                 gpointer *user_data;
11053                 MonoMethod **methods;
11054
11055                 methods_len = acfg->methods->len;
11056
11057                 len = acfg->methods->len / acfg->aot_opts.nthreads;
11058                 g_assert (len > 0);
11059                 /*
11060                  * Partition the list of methods into fragments, and hand it to threads to
11061                  * process.
11062                  */
11063                 threads = g_ptr_array_new ();
11064                 /* Make a copy since acfg->methods is modified by compile_method () */
11065                 methods = g_new0 (MonoMethod*, methods_len);
11066                 //memcpy (methods, g_ptr_array_index (acfg->methods, 0), sizeof (MonoMethod*) * methods_len);
11067                 for (i = 0; i < methods_len; ++i)
11068                         methods [i] = (MonoMethod *)g_ptr_array_index (acfg->methods, i);
11069                 i = 0;
11070                 while (i < methods_len) {
11071                         ERROR_DECL (error);
11072                         MonoInternalThread *thread;
11073
11074                         frag = g_ptr_array_new ();
11075                         for (j = 0; j < len; ++j) {
11076                                 if (i < methods_len) {
11077                                         g_ptr_array_add (frag, methods [i]);
11078                                         i ++;
11079                                 }
11080                         }
11081
11082                         user_data = g_new0 (gpointer, 3);
11083                         user_data [0] = acfg;
11084                         user_data [1] = frag;
11085
11086                         thread = mono_thread_create_internal (mono_domain_get (), compile_thread_main, (gpointer) user_data, MONO_THREAD_CREATE_FLAGS_NONE, error);
11087                         mono_error_assert_ok (error);
11088
11089                         thread_handle = mono_threads_open_thread_handle (thread->handle);
11090                         g_ptr_array_add (threads, thread_handle);
11091                 }
11092                 g_free (methods);
11093
11094                 for (i = 0; i < threads->len; ++i) {
11095                         mono_thread_info_wait_one_handle (g_ptr_array_index (threads, i), MONO_INFINITE_WAIT, FALSE);
11096                         mono_threads_close_thread_handle (g_ptr_array_index (threads, i));
11097                 }
11098         } else {
11099                 methods_len = 0;
11100         }
11101
11102         /* Compile methods added by compile_method () or all methods if nthreads == 0 */
11103         for (i = methods_len; i < acfg->methods->len; ++i) {
11104                 /* This can add new methods to acfg->methods */
11105                 compile_method (acfg, (MonoMethod *)g_ptr_array_index (acfg->methods, i));
11106         }
11107 }
11108
11109 static int
11110 compile_asm (MonoAotCompile *acfg)
11111 {
11112         char *command, *objfile;
11113         char *outfile_name, *tmp_outfile_name, *llvm_ofile;
11114         const char *tool_prefix = acfg->aot_opts.tool_prefix ? acfg->aot_opts.tool_prefix : "";
11115         char *ld_flags = acfg->aot_opts.ld_flags ? acfg->aot_opts.ld_flags : g_strdup("");
11116
11117 #ifdef TARGET_WIN32_MSVC
11118 #define AS_OPTIONS "-c -x assembler"
11119 #elif defined(TARGET_AMD64) && !defined(TARGET_MACH)
11120 #define AS_OPTIONS "--64"
11121 #elif defined(TARGET_POWERPC64)
11122 #define AS_OPTIONS "-a64 -mppc64"
11123 #elif defined(sparc) && SIZEOF_VOID_P == 8
11124 #define AS_OPTIONS "-xarch=v9"
11125 #elif defined(TARGET_X86) && defined(TARGET_MACH)
11126 #define AS_OPTIONS "-arch i386"
11127 #else
11128 #define AS_OPTIONS ""
11129 #endif
11130
11131 #if defined(TARGET_OSX)
11132 #define AS_NAME "clang"
11133 #elif defined(TARGET_WIN32_MSVC)
11134 #define AS_NAME "clang.exe"
11135 #else
11136 #define AS_NAME "as"
11137 #endif
11138
11139 #ifdef TARGET_WIN32_MSVC
11140 #define AS_OBJECT_FILE_SUFFIX "obj"
11141 #else
11142 #define AS_OBJECT_FILE_SUFFIX "o"
11143 #endif
11144
11145 #if defined(sparc)
11146 #define LD_NAME "ld"
11147 #define LD_OPTIONS "-shared -G"
11148 #elif defined(__ppc__) && defined(TARGET_MACH)
11149 #define LD_NAME "gcc"
11150 #define LD_OPTIONS "-dynamiclib"
11151 #elif defined(TARGET_AMD64) && defined(TARGET_MACH)
11152 #define LD_NAME "clang"
11153 #define LD_OPTIONS "--shared"
11154 #elif defined(TARGET_WIN32_MSVC)
11155 #define LD_NAME "link.exe"
11156 #define LD_OPTIONS "/DLL /MACHINE:X64 /NOLOGO /INCREMENTAL:NO"
11157 #define LD_DEBUG_OPTIONS LD_OPTIONS " /DEBUG"
11158 #elif defined(TARGET_WIN32) && !defined(TARGET_ANDROID)
11159 #define LD_NAME "gcc"
11160 #define LD_OPTIONS "-shared"
11161 #elif defined(TARGET_X86) && defined(TARGET_MACH)
11162 #define LD_NAME "clang"
11163 #define LD_OPTIONS "-m32 -dynamiclib"
11164 #elif defined(TARGET_ARM) && !defined(TARGET_ANDROID)
11165 #define LD_NAME "gcc"
11166 #define LD_OPTIONS "--shared"
11167 #elif defined(TARGET_POWERPC64)
11168 #define LD_OPTIONS "-m elf64ppc"
11169 #endif
11170
11171 #ifndef LD_OPTIONS
11172 #define LD_OPTIONS ""
11173 #endif
11174
11175         if (acfg->aot_opts.asm_only) {
11176                 aot_printf (acfg, "Output file: '%s'.\n", acfg->tmpfname);
11177                 if (acfg->aot_opts.static_link)
11178                         aot_printf (acfg, "Linking symbol: '%s'.\n", acfg->static_linking_symbol);
11179                 if (acfg->llvm)
11180                         aot_printf (acfg, "LLVM output file: '%s'.\n", acfg->llvm_sfile);
11181                 return 0;
11182         }
11183
11184         if (acfg->aot_opts.static_link) {
11185                 if (acfg->aot_opts.outfile)
11186                         objfile = g_strdup_printf ("%s", acfg->aot_opts.outfile);
11187                 else
11188                         objfile = g_strdup_printf ("%s." AS_OBJECT_FILE_SUFFIX, acfg->image->name);
11189         } else {
11190                 objfile = g_strdup_printf ("%s." AS_OBJECT_FILE_SUFFIX, acfg->tmpfname);
11191         }
11192
11193 #ifdef TARGET_OSX
11194         g_string_append (acfg->as_args, "-c -x assembler");
11195 #endif
11196
11197         command = g_strdup_printf ("\"%s%s\" %s %s -o %s %s", tool_prefix, AS_NAME, AS_OPTIONS,
11198                         acfg->as_args ? acfg->as_args->str : "",
11199                         wrap_path (objfile), wrap_path (acfg->tmpfname));
11200         aot_printf (acfg, "Executing the native assembler: %s\n", command);
11201         if (execute_system (command) != 0) {
11202                 g_free (command);
11203                 g_free (objfile);
11204                 return 1;
11205         }
11206
11207         if (acfg->llvm && !acfg->llvm_owriter) {
11208                 command = g_strdup_printf ("\"%s%s\" %s %s -o %s %s", tool_prefix, AS_NAME, AS_OPTIONS,
11209                         acfg->as_args ? acfg->as_args->str : "",
11210                         wrap_path (acfg->llvm_ofile), wrap_path (acfg->llvm_sfile));
11211                 aot_printf (acfg, "Executing the native assembler: %s\n", command);
11212                 if (execute_system (command) != 0) {
11213                         g_free (command);
11214                         g_free (objfile);
11215                         return 1;
11216                 }
11217         }
11218
11219         g_free (command);
11220
11221         if (acfg->aot_opts.static_link) {
11222                 aot_printf (acfg, "Output file: '%s'.\n", objfile);
11223                 aot_printf (acfg, "Linking symbol: '%s'.\n", acfg->static_linking_symbol);
11224                 g_free (objfile);
11225                 return 0;
11226         }
11227
11228         if (acfg->aot_opts.outfile)
11229                 outfile_name = g_strdup_printf ("%s", acfg->aot_opts.outfile);
11230         else
11231                 outfile_name = g_strdup_printf ("%s%s", acfg->image->name, MONO_SOLIB_EXT);
11232
11233         tmp_outfile_name = g_strdup_printf ("%s.tmp", outfile_name);
11234
11235         if (acfg->llvm) {
11236                 llvm_ofile = g_strdup_printf ("\"%s\"", acfg->llvm_ofile);
11237         } else {
11238                 llvm_ofile = g_strdup ("");
11239         }
11240
11241         /* replace the ; flags separators with spaces */
11242         g_strdelimit (ld_flags, ";", ' ');
11243
11244         if (acfg->aot_opts.llvm_only)
11245                 ld_flags = g_strdup_printf ("%s %s", ld_flags, "-lstdc++");
11246
11247 #ifdef TARGET_WIN32_MSVC
11248         g_assert (tmp_outfile_name != NULL);
11249         g_assert (objfile != NULL);
11250         command = g_strdup_printf ("\"%s%s\" %s %s /OUT:\"%s\" \"%s\"", tool_prefix, LD_NAME,
11251                         acfg->aot_opts.nodebug ? LD_OPTIONS : LD_DEBUG_OPTIONS, ld_flags, tmp_outfile_name, objfile);
11252 #elif defined(LD_NAME)
11253         command = g_strdup_printf ("%s%s %s -o %s %s %s %s", tool_prefix, LD_NAME, LD_OPTIONS,
11254                 wrap_path (tmp_outfile_name), wrap_path (llvm_ofile),
11255                 wrap_path (g_strdup_printf ("%s." AS_OBJECT_FILE_SUFFIX, acfg->tmpfname)), ld_flags);
11256 #else
11257         // Default (linux)
11258         if (acfg->aot_opts.tool_prefix) {
11259                 /* Cross compiling */
11260                 command = g_strdup_printf ("\"%sld\" %s -shared -o %s %s %s %s", tool_prefix, LD_OPTIONS,
11261                                                                    wrap_path (tmp_outfile_name), wrap_path (llvm_ofile),
11262                                                                    wrap_path (g_strdup_printf ("%s." AS_OBJECT_FILE_SUFFIX, acfg->tmpfname)), ld_flags);
11263         } else {
11264                 char *args = g_strdup_printf ("%s -shared -o %s %s %s %s", LD_OPTIONS,
11265                                                                           wrap_path (tmp_outfile_name), wrap_path (llvm_ofile),
11266                                                                           wrap_path (g_strdup_printf ("%s." AS_OBJECT_FILE_SUFFIX, acfg->tmpfname)), ld_flags);
11267
11268                 if (acfg->aot_opts.llvm_only) {
11269                         command = g_strdup_printf ("clang++ %s", args);
11270                 } else {
11271                         command = g_strdup_printf ("\"%sld\" %s", tool_prefix, args);
11272                 }
11273                 g_free (args);
11274         }
11275 #endif
11276         aot_printf (acfg, "Executing the native linker: %s\n", command);
11277         if (execute_system (command) != 0) {
11278                 g_free (tmp_outfile_name);
11279                 g_free (outfile_name);
11280                 g_free (command);
11281                 g_free (objfile);
11282                 g_free (ld_flags);
11283                 return 1;
11284         }
11285
11286         g_free (command);
11287
11288         /*com = g_strdup_printf ("strip --strip-unneeded %s%s", acfg->image->name, MONO_SOLIB_EXT);
11289         printf ("Stripping the binary: %s\n", com);
11290         execute_system (com);
11291         g_free (com);*/
11292
11293 #if defined(TARGET_ARM) && !defined(TARGET_MACH)
11294         /*
11295          * gas generates 'mapping symbols' each time code and data is mixed, which
11296          * happens a lot in emit_and_reloc_code (), so we need to get rid of them.
11297          */
11298         command = g_strdup_printf ("\"%sstrip\" --strip-symbol=\\$a --strip-symbol=\\$d %s", wrap_path(tool_prefix), wrap_path(tmp_outfile_name));
11299         aot_printf (acfg, "Stripping the binary: %s\n", command);
11300         if (execute_system (command) != 0) {
11301                 g_free (tmp_outfile_name);
11302                 g_free (outfile_name);
11303                 g_free (command);
11304                 g_free (objfile);
11305                 return 1;
11306         }
11307 #endif
11308
11309         if (0 != rename (tmp_outfile_name, outfile_name)) {
11310                 if (G_FILE_ERROR_EXIST == g_file_error_from_errno (errno)) {
11311                         /* Since we are rebuilding the module we need to be able to replace any old copies. Remove old file and retry rename operation. */
11312                         unlink (outfile_name);
11313                         rename (tmp_outfile_name, outfile_name);
11314                 }
11315         }
11316
11317 #if defined(TARGET_MACH)
11318         command = g_strdup_printf ("dsymutil \"%s\"", outfile_name);
11319         aot_printf (acfg, "Executing dsymutil: %s\n", command);
11320         if (execute_system (command) != 0) {
11321                 return 1;
11322         }
11323 #endif
11324
11325         if (!acfg->aot_opts.save_temps)
11326                 unlink (objfile);
11327
11328         g_free (tmp_outfile_name);
11329         g_free (outfile_name);
11330         g_free (objfile);
11331
11332         if (acfg->aot_opts.save_temps)
11333                 aot_printf (acfg, "Retained input file.\n");
11334         else
11335                 unlink (acfg->tmpfname);
11336
11337         return 0;
11338 }
11339
11340 static guint8
11341 profread_byte (FILE *infile)
11342 {
11343         guint8 i;
11344         int res;
11345
11346         res = fread (&i, 1, 1, infile);
11347         g_assert (res == 1);
11348         return i;
11349 }
11350
11351 static int
11352 profread_int (FILE *infile)
11353 {
11354         int i, res;
11355
11356         res = fread (&i, 4, 1, infile);
11357         g_assert (res == 1);
11358         return i;
11359 }
11360
11361 static char*
11362 profread_string (FILE *infile)
11363 {
11364         int len, res;
11365         char *pbuf;
11366
11367         len = profread_int (infile);
11368         pbuf = (char*)g_malloc (len + 1);
11369         res = fread (pbuf, 1, len, infile);
11370         g_assert (res == len);
11371         pbuf [len] = '\0';
11372         return pbuf;
11373 }
11374
11375 static void
11376 load_profile_file (MonoAotCompile *acfg, char *filename)
11377 {
11378         FILE *infile;
11379         char buf [1024];
11380         int res, len, version;
11381         char magic [32];
11382
11383         infile = fopen (filename, "r");
11384         if (!infile) {
11385                 fprintf (stderr, "Unable to open file '%s': %s.\n", filename, strerror (errno));
11386                 exit (1);
11387         }
11388
11389         printf ("Using profile data file '%s'\n", filename);
11390
11391         sprintf (magic, AOT_PROFILER_MAGIC);
11392         len = strlen (magic);
11393         res = fread (buf, 1, len, infile);
11394         magic [len] = '\0';
11395         buf [len] = '\0';
11396         if ((res != len) || strcmp (buf, magic) != 0) {
11397                 printf ("Profile file has wrong header: '%s'.\n", buf);
11398                 fclose (infile);
11399                 exit (1);
11400         }
11401         guint32 expected_version = (AOT_PROFILER_MAJOR_VERSION << 16) | AOT_PROFILER_MINOR_VERSION;
11402         version = profread_int (infile);
11403         if (version != expected_version) {
11404                 printf ("Profile file has wrong version 0x%4x, expected 0x%4x.\n", version, expected_version);
11405                 fclose (infile);
11406                 exit (1);
11407         }
11408
11409         ProfileData *data = g_new0 (ProfileData, 1);
11410         data->images = g_hash_table_new (NULL, NULL);
11411         data->classes = g_hash_table_new (NULL, NULL);
11412         data->ginsts = g_hash_table_new (NULL, NULL);
11413         data->methods = g_hash_table_new (NULL, NULL);
11414
11415         while (TRUE) {
11416                 int type = profread_byte (infile);
11417                 int id = profread_int (infile);
11418
11419                 if (type == AOTPROF_RECORD_NONE)
11420                         break;
11421
11422                 switch (type) {
11423                 case AOTPROF_RECORD_IMAGE: {
11424                         ImageProfileData *idata = g_new0 (ImageProfileData, 1);
11425                         idata->name = profread_string (infile);
11426                         char *mvid = profread_string (infile);
11427                         g_free (mvid);
11428                         g_hash_table_insert (data->images, GINT_TO_POINTER (id), idata);
11429                         break;
11430                 }
11431                 case AOTPROF_RECORD_GINST: {
11432                         int i;
11433                         int len = profread_int (infile);
11434
11435                         GInstProfileData *gdata = g_new0 (GInstProfileData, 1);
11436                         gdata->argc = len;
11437                         gdata->argv = g_new0 (ClassProfileData*, len);
11438
11439                         for (i = 0; i < len; ++i) {
11440                                 int class_id = profread_int (infile);
11441
11442                                 gdata->argv [i] = g_hash_table_lookup (data->classes, GINT_TO_POINTER (class_id));
11443                                 g_assert (gdata->argv [i]);
11444                         }
11445                         g_hash_table_insert (data->ginsts, GINT_TO_POINTER (id), gdata);
11446                         break;
11447                 }
11448                 case AOTPROF_RECORD_TYPE: {
11449                         int type = profread_byte (infile);
11450
11451                         switch (type) {
11452                         case MONO_TYPE_CLASS: {
11453                                 int image_id = profread_int (infile);
11454                                 int ginst_id = profread_int (infile);
11455                                 char *class_name = profread_string (infile);
11456
11457                                 ImageProfileData *image = g_hash_table_lookup (data->images, GINT_TO_POINTER (image_id));
11458                                 g_assert (image);
11459
11460                                 char *p = strrchr (class_name, '.');
11461                                 g_assert (p);
11462                                 *p = '\0';
11463
11464                                 ClassProfileData *cdata = g_new0 (ClassProfileData, 1);
11465                                 cdata->image = image;
11466                                 cdata->ns = g_strdup (class_name);
11467                                 cdata->name = g_strdup (p + 1);
11468
11469                                 if (ginst_id != -1) {
11470                                         cdata->inst = g_hash_table_lookup (data->ginsts, GINT_TO_POINTER (ginst_id));
11471                                         g_assert (cdata->inst);
11472                                 }
11473                                 g_free (class_name);
11474
11475                                 g_hash_table_insert (data->classes, GINT_TO_POINTER (id), cdata);
11476                                 break;
11477                         }
11478 #if 0
11479                         case MONO_TYPE_SZARRAY: {
11480                                 int elem_id = profread_int (infile);
11481                                 // FIXME:
11482                                 break;
11483                         }
11484 #endif
11485                         default:
11486                                 g_assert_not_reached ();
11487                                 break;
11488                         }
11489                         break;
11490                 }
11491                 case AOTPROF_RECORD_METHOD: {
11492                         int class_id = profread_int (infile);
11493                         int ginst_id = profread_int (infile);
11494                         int param_count = profread_int (infile);
11495                         char *method_name = profread_string (infile);
11496                         char *sig = profread_string (infile);
11497
11498                         ClassProfileData *klass = g_hash_table_lookup (data->classes, GINT_TO_POINTER (class_id));
11499                         g_assert (klass);
11500
11501                         MethodProfileData *mdata = g_new0 (MethodProfileData, 1);
11502                         mdata->id = id;
11503                         mdata->klass = klass;
11504                         mdata->name = method_name;
11505                         mdata->signature = sig;
11506                         mdata->param_count = param_count;
11507
11508                         if (ginst_id != -1) {
11509                                 mdata->inst = g_hash_table_lookup (data->ginsts, GINT_TO_POINTER (ginst_id));
11510                                 g_assert (mdata->inst);
11511                         }
11512                         g_hash_table_insert (data->methods, GINT_TO_POINTER (id), mdata);
11513                         break;
11514                 }
11515                 default:
11516                         printf ("%d\n", type);
11517                         g_assert_not_reached ();
11518                         break;
11519                 }
11520         }
11521
11522         fclose (infile);
11523         acfg->profile_data = g_list_append (acfg->profile_data, data);
11524 }
11525
11526 static void
11527 resolve_class (ClassProfileData *cdata);
11528
11529 static void
11530 resolve_ginst (GInstProfileData *inst_data)
11531 {
11532         int i;
11533
11534         if (inst_data->inst)
11535                 return;
11536
11537         for (i = 0; i < inst_data->argc; ++i) {
11538                 resolve_class (inst_data->argv [i]);
11539                 if (!inst_data->argv [i]->klass)
11540                         return;
11541         }
11542         MonoType **args = g_new0 (MonoType*, inst_data->argc);
11543         for (i = 0; i < inst_data->argc; ++i)
11544                 args [i] = m_class_get_byval_arg (inst_data->argv [i]->klass);
11545
11546         inst_data->inst = mono_metadata_get_generic_inst (inst_data->argc, args);
11547 }
11548
11549 static void
11550 resolve_class (ClassProfileData *cdata)
11551 {
11552         ERROR_DECL (error);
11553         MonoClass *klass;
11554
11555         if (!cdata->image->image)
11556                 return;
11557
11558         klass = mono_class_from_name_checked (cdata->image->image, cdata->ns, cdata->name, error);
11559         if (!klass) {
11560                 //printf ("[%s] %s.%s\n", cdata->image->name, cdata->ns, cdata->name);
11561                 return;
11562         }
11563         if (cdata->inst) {
11564                 resolve_ginst (cdata->inst);
11565                 if (!cdata->inst->inst)
11566                         return;
11567                 MonoGenericContext ctx;
11568
11569                 memset (&ctx, 0, sizeof (ctx));
11570                 ctx.class_inst = cdata->inst->inst;
11571                 cdata->klass = mono_class_inflate_generic_class_checked (klass, &ctx, error);
11572         } else {
11573                 cdata->klass = klass;
11574         }
11575 }
11576
11577 /*
11578  * Resolve the profile data to the corresponding loaded classes/methods etc. if possible.
11579  */
11580 static void
11581 resolve_profile_data (MonoAotCompile *acfg, ProfileData *data)
11582 {
11583         GHashTableIter iter;
11584         gpointer key, value;
11585         int i;
11586
11587         if (!data)
11588                 return;
11589
11590         /* Images */
11591         GPtrArray *assemblies = mono_domain_get_assemblies (mono_get_root_domain (), FALSE);
11592         g_hash_table_iter_init (&iter, data->images);
11593         while (g_hash_table_iter_next (&iter, &key, &value)) {
11594                 ImageProfileData *idata = (ImageProfileData*)value;
11595
11596                 for (i = 0; i < assemblies->len; ++i) {
11597                         MonoAssembly *ass = g_ptr_array_index (assemblies, i);
11598
11599                         if (!strcmp (ass->aname.name, idata->name)) {
11600                                 idata->image = ass->image;
11601                                 break;
11602                         }
11603                 }
11604         }
11605         g_ptr_array_free (assemblies, TRUE);
11606
11607         /* Classes */
11608         g_hash_table_iter_init (&iter, data->classes);
11609         while (g_hash_table_iter_next (&iter, &key, &value)) {
11610                 ClassProfileData *cdata = (ClassProfileData*)value;
11611
11612                 if (!cdata->image->image) {
11613                         if (acfg->aot_opts.verbose)
11614                                 printf ("Unable to load class '%s.%s' because its image '%s' is not loaded.\n", cdata->ns, cdata->name, cdata->image->name);
11615                         continue;
11616                 }
11617
11618                 resolve_class (cdata);
11619                 /*
11620                 if (cdata->klass)
11621                         printf ("%s %s %s\n", cdata->ns, cdata->name, mono_class_full_name (cdata->klass));
11622                 */
11623         }
11624
11625         /* Methods */
11626         g_hash_table_iter_init (&iter, data->methods);
11627         while (g_hash_table_iter_next (&iter, &key, &value)) {
11628                 MethodProfileData *mdata = (MethodProfileData*)value;
11629                 MonoClass *klass;
11630                 MonoMethod *m;
11631                 gpointer miter;
11632
11633                 resolve_class (mdata->klass);
11634                 klass = mdata->klass->klass;
11635                 if (!klass) {
11636                         if (acfg->aot_opts.verbose)
11637                                 printf ("Unable to load method '%s' because its class '%s.%s' is not loaded.\n", mdata->name, mdata->klass->ns, mdata->klass->name);
11638                         continue;
11639                 }
11640                 miter = NULL;
11641                 while ((m = mono_class_get_methods (klass, &miter))) {
11642                         ERROR_DECL (error);
11643
11644                         if (strcmp (m->name, mdata->name))
11645                                 continue;
11646                         MonoMethodSignature *sig = mono_method_signature (m);
11647                         if (!sig)
11648                                 continue;
11649                         if (sig->param_count != mdata->param_count)
11650                                 continue;
11651                         if (mdata->inst) {
11652                                 resolve_ginst (mdata->inst);
11653                                 if (!mdata->inst->inst)
11654                                         continue;
11655                                 MonoGenericContext ctx;
11656
11657                                 memset (&ctx, 0, sizeof (ctx));
11658                                 ctx.method_inst = mdata->inst->inst;
11659
11660                                 m = mono_class_inflate_generic_method_checked (m, &ctx, error);
11661                                 if (!m)
11662                                         continue;
11663                                 sig = mono_method_signature_checked (m, error);
11664                                 if (!is_ok (error)) {
11665                                         mono_error_cleanup (error);
11666                                         continue;
11667                                 }
11668                         }
11669                         char *sig_str = mono_signature_full_name (sig);
11670                         gboolean match = !strcmp (sig_str, mdata->signature);
11671                         g_free (sig_str);
11672                         if (!match)
11673
11674                                 continue;
11675                         //printf ("%s\n", mono_method_full_name (m, 1));
11676                         mdata->method = m;
11677                         break;
11678                 }
11679                 if (!mdata->method) {
11680                         if (acfg->aot_opts.verbose)
11681                                 printf ("Unable to load method '%s' from class '%s', not found.\n", mdata->name, mono_class_full_name (klass));
11682                 }
11683         }
11684 }
11685
11686 static gboolean
11687 inst_references_image (MonoGenericInst *inst, MonoImage *image)
11688 {
11689         int i;
11690
11691         for (i = 0; i < inst->type_argc; ++i) {
11692                 MonoClass *k = mono_class_from_mono_type (inst->type_argv [i]);
11693                 if (m_class_get_image (k) == image)
11694                         return TRUE;
11695                 if (mono_class_is_ginst (k)) {
11696                         MonoGenericInst *kinst = mono_class_get_context (k)->class_inst;
11697                         if (inst_references_image (kinst, image))
11698                                 return TRUE;
11699                 }
11700         }
11701         return FALSE;
11702 }
11703
11704 static gboolean
11705 is_local_inst (MonoGenericInst *inst, MonoImage *image)
11706 {
11707         int i;
11708
11709         for (i = 0; i < inst->type_argc; ++i) {
11710                 MonoClass *k = mono_class_from_mono_type (inst->type_argv [i]);
11711                 if (!MONO_TYPE_IS_PRIMITIVE (inst->type_argv [i]) && m_class_get_image (k) != image)
11712                         return FALSE;
11713         }
11714         return TRUE;
11715 }
11716
11717 static void
11718 add_profile_instances (MonoAotCompile *acfg, ProfileData *data)
11719 {
11720         GHashTableIter iter;
11721         gpointer key, value;
11722         int count = 0;
11723
11724         if (!data)
11725                 return;
11726
11727         if (acfg->aot_opts.profile_only) {
11728                 /* Add methods referenced by the profile */
11729                 g_hash_table_iter_init (&iter, data->methods);
11730                 while (g_hash_table_iter_next (&iter, &key, &value)) {
11731                         MethodProfileData *mdata = (MethodProfileData*)value;
11732                         MonoMethod *m = mdata->method;
11733
11734                         if (!m)
11735                                 continue;
11736                         if (m->is_inflated)
11737                                 continue;
11738                         add_extra_method (acfg, m);
11739                         g_hash_table_insert (acfg->profile_methods, m, m);
11740                         count ++;
11741                 }
11742         }
11743
11744         /*
11745          * Add method instances 'related' to this assembly to the AOT image.
11746          */
11747         g_hash_table_iter_init (&iter, data->methods);
11748         while (g_hash_table_iter_next (&iter, &key, &value)) {
11749                 MethodProfileData *mdata = (MethodProfileData*)value;
11750                 MonoMethod *m = mdata->method;
11751                 MonoGenericContext *ctx;
11752
11753                 if (!m)
11754                         continue;
11755                 if (!m->is_inflated)
11756                         continue;
11757
11758                 ctx = mono_method_get_context (m);
11759                 /* For simplicity, add instances which reference the assembly we are compiling */
11760                 if (((ctx->class_inst && inst_references_image (ctx->class_inst, acfg->image)) ||
11761                          (ctx->method_inst && inst_references_image (ctx->method_inst, acfg->image))) &&
11762                         !mono_method_is_generic_sharable_full (m, FALSE, FALSE, FALSE)) {
11763                         //printf ("%s\n", mono_method_full_name (m, TRUE));
11764                         add_extra_method (acfg, m);
11765                         count ++;
11766                 } else if (m_class_get_image (m->klass) == acfg->image &&
11767                         ((ctx->class_inst && is_local_inst (ctx->class_inst, acfg->image)) ||
11768                          (ctx->method_inst && is_local_inst (ctx->method_inst, acfg->image))) &&
11769                         !mono_method_is_generic_sharable_full (m, FALSE, FALSE, FALSE))  {
11770                         /* Add instances where the gtd is in the assembly and its inflated with types from this assembly or corlib */
11771                         //printf ("%s\n", mono_method_full_name (m, TRUE));
11772                         add_extra_method (acfg, m);
11773                         count ++;
11774                 }
11775                 /*
11776                  * FIXME: We might skip some instances, for example:
11777                  * Foo<Bar> won't be compiled when compiling Foo's assembly since it doesn't match the first case,
11778                  * and it won't be compiled when compiling Bar's assembly if Foo's assembly is not loaded.
11779                  */
11780         }
11781
11782         printf ("Added %d methods from profile.\n", count);
11783 }
11784
11785 static void
11786 init_got_info (GotInfo *info)
11787 {
11788         int i;
11789
11790         info->patch_to_got_offset = g_hash_table_new (mono_patch_info_hash, mono_patch_info_equal);
11791         info->patch_to_got_offset_by_type = g_new0 (GHashTable*, MONO_PATCH_INFO_NUM);
11792         for (i = 0; i < MONO_PATCH_INFO_NUM; ++i)
11793                 info->patch_to_got_offset_by_type [i] = g_hash_table_new (mono_patch_info_hash, mono_patch_info_equal);
11794         info->got_patches = g_ptr_array_new ();
11795 }
11796
11797 static MonoAotCompile*
11798 acfg_create (MonoAssembly *ass, guint32 opts)
11799 {
11800         MonoImage *image = ass->image;
11801         MonoAotCompile *acfg;
11802
11803         acfg = g_new0 (MonoAotCompile, 1);
11804         acfg->methods = g_ptr_array_new ();
11805         acfg->method_indexes = g_hash_table_new (NULL, NULL);
11806         acfg->method_depth = g_hash_table_new (NULL, NULL);
11807         acfg->plt_offset_to_entry = g_hash_table_new (NULL, NULL);
11808         acfg->patch_to_plt_entry = g_new0 (GHashTable*, MONO_PATCH_INFO_NUM);
11809         acfg->method_to_cfg = g_hash_table_new (NULL, NULL);
11810         acfg->token_info_hash = g_hash_table_new_full (NULL, NULL, NULL, NULL);
11811         acfg->method_to_pinvoke_import = g_hash_table_new_full (NULL, NULL, NULL, g_free);
11812         acfg->image_hash = g_hash_table_new (NULL, NULL);
11813         acfg->image_table = g_ptr_array_new ();
11814         acfg->globals = g_ptr_array_new ();
11815         acfg->image = image;
11816         acfg->opts = opts;
11817         /* TODO: Write out set of SIMD instructions used, rather than just those available */
11818         acfg->simd_opts = mono_arch_cpu_enumerate_simd_versions ();
11819         acfg->mempool = mono_mempool_new ();
11820         acfg->extra_methods = g_ptr_array_new ();
11821         acfg->unwind_info_offsets = g_hash_table_new (NULL, NULL);
11822         acfg->unwind_ops = g_ptr_array_new ();
11823         acfg->method_label_hash = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL);
11824         acfg->method_order = g_ptr_array_new ();
11825         acfg->export_names = g_hash_table_new (NULL, NULL);
11826         acfg->klass_blob_hash = g_hash_table_new (NULL, NULL);
11827         acfg->method_blob_hash = g_hash_table_new (NULL, NULL);
11828         acfg->plt_entry_debug_sym_cache = g_hash_table_new (g_str_hash, g_str_equal);
11829         acfg->gsharedvt_in_signatures = g_hash_table_new ((GHashFunc)mono_signature_hash, (GEqualFunc)mono_metadata_signature_equal);
11830         acfg->gsharedvt_out_signatures = g_hash_table_new ((GHashFunc)mono_signature_hash, (GEqualFunc)mono_metadata_signature_equal);
11831         acfg->profile_methods = g_hash_table_new (NULL, NULL);
11832         mono_os_mutex_init_recursive (&acfg->mutex);
11833
11834         init_got_info (&acfg->got_info);
11835         init_got_info (&acfg->llvm_got_info);
11836
11837         return acfg;
11838 }
11839
11840 static void
11841 got_info_free (GotInfo *info)
11842 {
11843         int i;
11844
11845         for (i = 0; i < MONO_PATCH_INFO_NUM; ++i)
11846                 g_hash_table_destroy (info->patch_to_got_offset_by_type [i]);
11847         g_free (info->patch_to_got_offset_by_type);
11848         g_hash_table_destroy (info->patch_to_got_offset);
11849         g_ptr_array_free (info->got_patches, TRUE);
11850 }
11851
11852 static void
11853 acfg_free (MonoAotCompile *acfg)
11854 {
11855         int i;
11856
11857         mono_img_writer_destroy (acfg->w);
11858         for (i = 0; i < acfg->nmethods; ++i)
11859                 if (acfg->cfgs [i])
11860                         mono_destroy_compile (acfg->cfgs [i]);
11861
11862         g_free (acfg->cfgs);
11863
11864         g_free (acfg->static_linking_symbol);
11865         g_free (acfg->got_symbol);
11866         g_free (acfg->plt_symbol);
11867         g_ptr_array_free (acfg->methods, TRUE);
11868         g_ptr_array_free (acfg->image_table, TRUE);
11869         g_ptr_array_free (acfg->globals, TRUE);
11870         g_ptr_array_free (acfg->unwind_ops, TRUE);
11871         g_hash_table_destroy (acfg->method_indexes);
11872         g_hash_table_destroy (acfg->method_depth);
11873         g_hash_table_destroy (acfg->plt_offset_to_entry);
11874         for (i = 0; i < MONO_PATCH_INFO_NUM; ++i) {
11875                 if (acfg->patch_to_plt_entry [i])
11876                         g_hash_table_destroy (acfg->patch_to_plt_entry [i]);
11877         }
11878         g_free (acfg->patch_to_plt_entry);
11879         g_hash_table_destroy (acfg->method_to_cfg);
11880         g_hash_table_destroy (acfg->token_info_hash);
11881         g_hash_table_destroy (acfg->method_to_pinvoke_import);
11882         g_hash_table_destroy (acfg->image_hash);
11883         g_hash_table_destroy (acfg->unwind_info_offsets);
11884         g_hash_table_destroy (acfg->method_label_hash);
11885         if (acfg->typespec_classes)
11886                 g_hash_table_destroy (acfg->typespec_classes);
11887         g_hash_table_destroy (acfg->export_names);
11888         g_hash_table_destroy (acfg->plt_entry_debug_sym_cache);
11889         g_hash_table_destroy (acfg->klass_blob_hash);
11890         g_hash_table_destroy (acfg->method_blob_hash);
11891         got_info_free (&acfg->got_info);
11892         got_info_free (&acfg->llvm_got_info);
11893         arch_free_unwind_info_section_cache (acfg);
11894         mono_mempool_destroy (acfg->mempool);
11895         g_free (acfg);
11896 }
11897
11898 #define WRAPPER(e,n) n,
11899 static const char* const
11900 wrapper_type_names [MONO_WRAPPER_NUM + 1] = {
11901 #include "mono/metadata/wrapper-types.h"
11902         NULL
11903 };
11904
11905 static G_GNUC_UNUSED const char*
11906 get_wrapper_type_name (int type)
11907 {
11908         return wrapper_type_names [type];
11909 }
11910
11911 //#define DUMP_PLT
11912 //#define DUMP_GOT
11913
11914 static void aot_dump (MonoAotCompile *acfg)
11915 {
11916         FILE *dumpfile;
11917         char * dumpname;
11918
11919         JsonWriter writer;
11920         mono_json_writer_init (&writer);
11921
11922         mono_json_writer_object_begin(&writer);
11923
11924         // Methods
11925         mono_json_writer_indent (&writer);
11926         mono_json_writer_object_key(&writer, "methods");
11927         mono_json_writer_array_begin (&writer);
11928
11929         int i;
11930         for (i = 0; i < acfg->nmethods; ++i) {
11931                 MonoCompile *cfg;
11932                 MonoMethod *method;
11933                 MonoClass *klass;
11934
11935                 cfg = acfg->cfgs [i];
11936                 if (ignore_cfg (cfg))
11937                         continue;
11938
11939                 method = cfg->orig_method;
11940
11941                 mono_json_writer_indent (&writer);
11942                 mono_json_writer_object_begin(&writer);
11943
11944                 mono_json_writer_indent (&writer);
11945                 mono_json_writer_object_key(&writer, "name");
11946                 mono_json_writer_printf (&writer, "\"%s\",\n", method->name);
11947
11948                 mono_json_writer_indent (&writer);
11949                 mono_json_writer_object_key(&writer, "signature");
11950                 mono_json_writer_printf (&writer, "\"%s\",\n", mono_method_get_full_name (method));
11951
11952                 mono_json_writer_indent (&writer);
11953                 mono_json_writer_object_key(&writer, "code_size");
11954                 mono_json_writer_printf (&writer, "\"%d\",\n", cfg->code_size);
11955
11956                 klass = method->klass;
11957
11958                 mono_json_writer_indent (&writer);
11959                 mono_json_writer_object_key(&writer, "class");
11960                 mono_json_writer_printf (&writer, "\"%s\",\n", m_class_get_name (klass));
11961
11962                 mono_json_writer_indent (&writer);
11963                 mono_json_writer_object_key(&writer, "namespace");
11964                 mono_json_writer_printf (&writer, "\"%s\",\n", m_class_get_name_space (klass));
11965
11966                 mono_json_writer_indent (&writer);
11967                 mono_json_writer_object_key(&writer, "wrapper_type");
11968                 mono_json_writer_printf (&writer, "\"%s\",\n", get_wrapper_type_name(method->wrapper_type));
11969
11970                 mono_json_writer_indent_pop (&writer);
11971                 mono_json_writer_indent (&writer);
11972                 mono_json_writer_object_end (&writer);
11973                 mono_json_writer_printf (&writer, ",\n");
11974         }
11975
11976         mono_json_writer_indent_pop (&writer);
11977         mono_json_writer_indent (&writer);
11978         mono_json_writer_array_end (&writer);
11979         mono_json_writer_printf (&writer, ",\n");
11980
11981         // PLT entries
11982 #ifdef DUMP_PLT
11983         mono_json_writer_indent_push (&writer);
11984         mono_json_writer_indent (&writer);
11985         mono_json_writer_object_key(&writer, "plt");
11986         mono_json_writer_array_begin (&writer);
11987
11988         for (i = 0; i < acfg->plt_offset; ++i) {
11989                 MonoPltEntry *plt_entry = NULL;
11990                 MonoJumpInfo *ji;
11991
11992                 if (i == 0)
11993                         /*
11994                          * The first plt entry is unused.
11995                          */
11996                         continue;
11997
11998                 plt_entry = g_hash_table_lookup (acfg->plt_offset_to_entry, GUINT_TO_POINTER (i));
11999                 ji = plt_entry->ji;
12000
12001                 mono_json_writer_indent (&writer);
12002                 mono_json_writer_printf (&writer, "{ ");
12003                 mono_json_writer_object_key(&writer, "symbol");
12004                 mono_json_writer_printf (&writer, "\"%s\" },\n", plt_entry->symbol);
12005         }
12006
12007         mono_json_writer_indent_pop (&writer);
12008         mono_json_writer_indent (&writer);
12009         mono_json_writer_array_end (&writer);
12010         mono_json_writer_printf (&writer, ",\n");
12011 #endif
12012
12013         // GOT entries
12014 #ifdef DUMP_GOT
12015         mono_json_writer_indent_push (&writer);
12016         mono_json_writer_indent (&writer);
12017         mono_json_writer_object_key(&writer, "got");
12018         mono_json_writer_array_begin (&writer);
12019
12020         mono_json_writer_indent_push (&writer);
12021         for (i = 0; i < acfg->got_info.got_patches->len; ++i) {
12022                 MonoJumpInfo *ji = g_ptr_array_index (acfg->got_info.got_patches, i);
12023
12024                 mono_json_writer_indent (&writer);
12025                 mono_json_writer_printf (&writer, "{ ");
12026                 mono_json_writer_object_key(&writer, "patch_name");
12027                 mono_json_writer_printf (&writer, "\"%s\" },\n", get_patch_name (ji->type));
12028         }
12029
12030         mono_json_writer_indent_pop (&writer);
12031         mono_json_writer_indent (&writer);
12032         mono_json_writer_array_end (&writer);
12033         mono_json_writer_printf (&writer, ",\n");
12034 #endif
12035
12036         mono_json_writer_indent_pop (&writer);
12037         mono_json_writer_indent (&writer);
12038         mono_json_writer_object_end (&writer);
12039
12040         dumpname = g_strdup_printf ("%s.json", g_path_get_basename (acfg->image->name));
12041         dumpfile = fopen (dumpname, "w+");
12042         g_free (dumpname);
12043
12044         fprintf (dumpfile, "%s", writer.text->str);
12045         fclose (dumpfile);
12046
12047         mono_json_writer_destroy (&writer);
12048 }
12049
12050 static const char *preinited_jit_icalls[] = {
12051         "mono_aot_init_llvm_method",
12052         "mono_aot_init_gshared_method_this",
12053         "mono_aot_init_gshared_method_mrgctx",
12054         "mono_aot_init_gshared_method_vtable",
12055         "mono_llvm_throw_corlib_exception",
12056         "mono_init_vtable_slot",
12057         "mono_helper_ldstr_mscorlib"
12058 };
12059
12060 static void
12061 add_preinit_got_slots (MonoAotCompile *acfg)
12062 {
12063         MonoJumpInfo *ji;
12064         int i;
12065
12066         /*
12067          * Allocate the first few GOT entries to information which is needed frequently, or it is needed
12068          * during method initialization etc.
12069          */
12070
12071         ji = (MonoJumpInfo *)mono_mempool_alloc0 (acfg->mempool, sizeof (MonoJumpInfo));
12072         ji->type = MONO_PATCH_INFO_IMAGE;
12073         ji->data.image = acfg->image;
12074         get_got_offset (acfg, FALSE, ji);
12075         get_got_offset (acfg, TRUE, ji);
12076
12077         ji = (MonoJumpInfo *)mono_mempool_alloc0 (acfg->mempool, sizeof (MonoJumpInfo));
12078         ji->type = MONO_PATCH_INFO_MSCORLIB_GOT_ADDR;
12079         get_got_offset (acfg, FALSE, ji);
12080         get_got_offset (acfg, TRUE, ji);
12081
12082         ji = (MonoJumpInfo *)mono_mempool_alloc0 (acfg->mempool, sizeof (MonoJumpInfo));
12083         ji->type = MONO_PATCH_INFO_GC_CARD_TABLE_ADDR;
12084         get_got_offset (acfg, FALSE, ji);
12085         get_got_offset (acfg, TRUE, ji);
12086
12087         ji = (MonoJumpInfo *)mono_mempool_alloc0 (acfg->mempool, sizeof (MonoJumpInfo));
12088         ji->type = MONO_PATCH_INFO_GC_NURSERY_START;
12089         get_got_offset (acfg, FALSE, ji);
12090         get_got_offset (acfg, TRUE, ji);
12091
12092         ji = (MonoJumpInfo *)mono_mempool_alloc0 (acfg->mempool, sizeof (MonoJumpInfo));
12093         ji->type = MONO_PATCH_INFO_AOT_MODULE;
12094         get_got_offset (acfg, FALSE, ji);
12095         get_got_offset (acfg, TRUE, ji);
12096
12097         ji = (MonoJumpInfo *)mono_mempool_alloc0 (acfg->mempool, sizeof (MonoJumpInfo));
12098         ji->type = MONO_PATCH_INFO_GC_NURSERY_BITS;
12099         get_got_offset (acfg, FALSE, ji);
12100         get_got_offset (acfg, TRUE, ji);
12101
12102         for (i = 0; i < TLS_KEY_NUM; i++) {
12103                 ji = (MonoJumpInfo *)mono_mempool_alloc0 (acfg->mempool, sizeof (MonoJumpInfo));
12104                 ji->type = MONO_PATCH_INFO_GET_TLS_TRAMP;
12105                 ji->data.index = i;
12106                 get_got_offset (acfg, FALSE, ji);
12107                 get_got_offset (acfg, TRUE, ji);
12108
12109                 ji = (MonoJumpInfo *)mono_mempool_alloc0 (acfg->mempool, sizeof (MonoJumpInfo));
12110                 ji->type = MONO_PATCH_INFO_SET_TLS_TRAMP;
12111                 ji->data.index = i;
12112                 get_got_offset (acfg, FALSE, ji);
12113                 get_got_offset (acfg, TRUE, ji);
12114         }
12115
12116         ji = (MonoJumpInfo *)mono_mempool_alloc0 (acfg->mempool, sizeof (MonoJumpInfo));
12117         ji->type = MONO_PATCH_INFO_JIT_THREAD_ATTACH;
12118         get_got_offset (acfg, FALSE, ji);
12119         get_got_offset (acfg, TRUE, ji);
12120
12121         /* Called by native-to-managed wrappers on possibly unattached threads */
12122         ji = (MonoJumpInfo *)mono_mempool_alloc0 (acfg->mempool, sizeof (MonoJumpInfo));
12123         ji->type = MONO_PATCH_INFO_JIT_ICALL_ADDR_NOCALL;
12124         ji->data.name = "mono_threads_attach_coop";
12125         get_got_offset (acfg, FALSE, ji);
12126         get_got_offset (acfg, TRUE, ji);
12127
12128         for (i = 0; i < sizeof (preinited_jit_icalls) / sizeof (char*); ++i) {
12129                 ji = (MonoJumpInfo *)mono_mempool_alloc0 (acfg->mempool, sizeof (MonoAotCompile));
12130                 ji->type = MONO_PATCH_INFO_INTERNAL_METHOD;
12131                 ji->data.name = preinited_jit_icalls [i];
12132                 get_got_offset (acfg, FALSE, ji);
12133                 get_got_offset (acfg, TRUE, ji);
12134         }
12135
12136         acfg->nshared_got_entries = acfg->got_offset;
12137 }
12138
12139 static void
12140 mono_dedup_log_stats (MonoAotCompile *acfg)
12141 {
12142         GHashTableIter iter;
12143         g_assert (acfg->dedup_stats);
12144
12145         // If dedup_emit_mode, acfg is the dummy dedup module that consolidates
12146         // deduped modules
12147         g_hash_table_iter_init (&iter, acfg->method_to_cfg);
12148         MonoCompile *dcfg = NULL;
12149         MonoMethod *method = NULL;
12150
12151         size_t wrappers_size_saved = 0;
12152         size_t inflated_size_saved = 0;
12153         size_t copied_singles = 0;
12154
12155         while (g_hash_table_iter_next (&iter, (gpointer *) &method, (gpointer *)&dcfg)) {
12156                 gchar *dedup_name = mono_aot_get_mangled_method_name (method);
12157                 guint count = GPOINTER_TO_UINT(g_hash_table_lookup (acfg->dedup_stats, dedup_name));
12158
12159                 if (count == 0)
12160                         continue;
12161
12162                 if (acfg->dedup_emit_mode) {
12163                         // Size *saved* is the size due to things not emitted.
12164                         if (count < 2) {
12165                                 // Just moved, didn't save space / dedup
12166                                 copied_singles += dcfg->code_len;
12167                         } else if (method->wrapper_type != MONO_WRAPPER_NONE) {
12168                                 wrappers_size_saved += dcfg->code_len * (count - 1);
12169                         } else {
12170                                 inflated_size_saved += dcfg->code_len * (count - 1);
12171                         }
12172                 }
12173           if (acfg->aot_opts.dedup) {
12174                         if (method->wrapper_type != MONO_WRAPPER_NONE) {
12175                                 wrappers_size_saved += dcfg->code_len * count;
12176                         } else {
12177                                 inflated_size_saved += dcfg->code_len * count;
12178                         }
12179                 }
12180         }
12181
12182         aot_printf (acfg, "Dedup Pass: Size Saved From Deduped Wrappers:\t%zu bytes\n", wrappers_size_saved);
12183         aot_printf (acfg, "Dedup Pass: Size Saved From Inflated Methods:\t%zu bytes\n", inflated_size_saved);
12184         if (acfg->dedup_emit_mode)
12185                 aot_printf (acfg, "Dedup Pass: Size of Moved But Not Deduped (only 1 copy) Methods:\t%zu bytes\n", copied_singles);
12186
12187         g_hash_table_destroy (acfg->dedup_stats);
12188         acfg->dedup_stats = NULL;
12189 }
12190
12191 // Flush the cache to tell future calls what to skip
12192 static void
12193 mono_flush_method_cache (MonoAotCompile *acfg)
12194 {
12195         GHashTable *method_cache = acfg->dedup_cache;
12196         char *filename = g_strdup_printf ("%s.dedup", acfg->image->name);
12197         if (!acfg->dedup_cache_changed || !acfg->aot_opts.dedup) {
12198                 g_free (filename);
12199                 return;
12200         }
12201
12202         acfg->dedup_cache = NULL;
12203
12204         FILE *cache = fopen (filename, "w");
12205
12206         if (!cache)
12207                 g_error ("Could not create cache at %s because of error: %s\n", filename, strerror (errno));
12208
12209         GHashTableIter iter;
12210         gchar *name = NULL;
12211         g_hash_table_iter_init (&iter, method_cache);
12212         gboolean cont = TRUE;
12213         while (cont && g_hash_table_iter_next (&iter, (gpointer *) &name, NULL)) {
12214                 int res = fprintf (cache, "%s\n", name);
12215                 cont = res >= 0;
12216         }
12217         // FIXME: don't assert if error when flushing
12218         g_assert (cont);
12219
12220         fclose (cache);
12221         g_free (filename);
12222
12223         // The keys are all in the imageset, nothing to free
12224         // Values are just pointers to memory owned elsewhere, or sentinels
12225         g_hash_table_destroy (method_cache);
12226 }
12227
12228 // Read in what has been emitted by previous invocations,
12229 // what can be skipped
12230 static void
12231 mono_read_method_cache (MonoAotCompile *acfg)
12232 {
12233         char *filename = g_strdup_printf ("%s.dedup", acfg->image->name);
12234         // Only do once, when dedup_cache is null
12235         if (acfg->dedup_cache)
12236                 goto early_exit;
12237
12238         if (acfg->aot_opts.dedup_include || acfg->aot_opts.dedup)
12239                 g_assert (acfg->dedup_stats);
12240
12241         // only in skip mode
12242         if (!acfg->aot_opts.dedup)
12243                 goto early_exit;
12244
12245         g_assert (acfg->dedup_cache);
12246
12247         FILE *cache = fopen (filename, "r");
12248         if (!cache)
12249                 goto early_exit;
12250
12251         // Since we do pointer comparisons, and it can't be allocated at
12252         // the address 0x1 due to alignment, we use this as a sentinel
12253         gpointer other_acfg_sentinel = GINT_TO_POINTER (0x1);
12254
12255         if (fseek (cache, 0L, SEEK_END))
12256                 goto cleanup;
12257
12258         size_t fileLength = ftell (cache);
12259         g_assert (fileLength > 0);
12260
12261         if (fseek (cache, 0L, SEEK_SET))
12262                 goto cleanup;
12263
12264         // Avoid thousands of new malloc entries
12265         // FIXME: allocate into imageset, so we don't need to free.
12266         // put the other mangled names there too.
12267         char *bulk = g_malloc0 (fileLength * sizeof (char));
12268         size_t offset = 0;
12269
12270         while (fgets (&bulk [offset], fileLength - offset, cache)) {
12271                 // strip newline
12272                 char *line = &bulk [offset];
12273                 size_t len = strlen (line);
12274                 if (len == 0)
12275                         break;
12276
12277                 if (len >= 0 && line [len] == '\n')
12278                         line [len] = '\0';
12279                 offset += strlen (line) + 1;
12280                 g_assert (fileLength >= offset);
12281
12282                 g_hash_table_insert (acfg->dedup_cache, line, other_acfg_sentinel);
12283         }
12284
12285 cleanup:
12286         fclose (cache);
12287
12288 early_exit:
12289         g_free (filename);
12290         return;
12291 }
12292
12293 typedef struct {
12294         GHashTable *cache;
12295         GHashTable *stats;
12296         gboolean emit_inflated_methods;
12297         MonoAssembly *inflated_assembly;
12298 } MonoAotState;
12299
12300 static MonoAotState *
12301 alloc_aot_state (void)
12302 {
12303         MonoAotState *state = g_malloc (sizeof (MonoAotState));
12304         // FIXME: Should this own the memory?
12305         state->cache = g_hash_table_new (g_str_hash, g_str_equal);
12306         state->stats = g_hash_table_new (g_str_hash, g_str_equal);
12307         // Start in "collect mode"
12308         state->emit_inflated_methods = FALSE;
12309         state->inflated_assembly = NULL;
12310         return state;
12311 }
12312
12313 static void
12314 free_aot_state (MonoAotState *astate)
12315 {
12316         g_hash_table_destroy (astate->cache);
12317         g_free (astate);
12318 }
12319
12320 static void
12321 mono_add_deferred_extra_methods (MonoAotCompile *acfg, MonoAotState *astate)
12322 {
12323         GHashTableIter iter;
12324         gchar *name = NULL;
12325         MonoMethod *method = NULL;
12326
12327         acfg->dedup_emit_mode = TRUE;
12328
12329         g_hash_table_iter_init (&iter, astate->cache);
12330         while (g_hash_table_iter_next (&iter, (gpointer *) &name, (gpointer *) &method)) {
12331                 add_method_full (acfg, method, TRUE, 0);
12332         }
12333         return;
12334 }
12335
12336 static void
12337 mono_setup_dedup_state (MonoAotCompile *acfg, MonoAotState **global_aot_state, MonoAssembly *ass, MonoAotState **astate, gboolean *is_dedup_dummy)
12338 {
12339         if (!acfg->aot_opts.dedup_include && !acfg->aot_opts.dedup)
12340                 return;
12341
12342         if (global_aot_state && *global_aot_state && acfg->aot_opts.dedup_include) {
12343         // Thread the state through when making the inflate pass
12344                 *astate = *global_aot_state;
12345         }
12346
12347         if (!*astate) {
12348                 *astate = alloc_aot_state ();
12349                 *global_aot_state = *astate;
12350         }
12351
12352         acfg->dedup_cache = (*astate)->cache;
12353         acfg->dedup_stats = (*astate)->stats;
12354
12355         // fills out acfg->dedup_cache
12356         if (acfg->aot_opts.dedup)
12357                 mono_read_method_cache (acfg);
12358
12359         if (!(*astate)->inflated_assembly && acfg->aot_opts.dedup_include) {
12360                 gchar **asm_path = g_strsplit (ass->image->name, G_DIR_SEPARATOR_S, 0);
12361                 gchar *asm_file = NULL;
12362
12363                 // Get the last part of the path, the filename
12364                 for (int i=0; asm_path [i] != NULL; i++)
12365                         asm_file = asm_path [i];
12366
12367                 if (!strcmp (acfg->aot_opts.dedup_include, asm_file)) {
12368                         // Save
12369                         *is_dedup_dummy = TRUE;
12370                         (*astate)->inflated_assembly = ass;
12371                 }
12372                 g_strfreev (asm_path);
12373         } else if ((*astate)->inflated_assembly) {
12374                 *is_dedup_dummy = (ass == (*astate)->inflated_assembly);
12375         }
12376 }
12377
12378 int
12379 mono_compile_deferred_assemblies (guint32 opts, const char *aot_options, gpointer **aot_state)
12380 {
12381         // create assembly, loop and add extra_methods
12382         // in add_generic_instances , rip out what's in that for loop
12383         // and apply that to this aot_state inside of mono_compile_assembly
12384         MonoAotState *astate;
12385         astate = *(MonoAotState **)aot_state;
12386         g_assert (astate);
12387
12388         // FIXME: allow suffixes?
12389         if (!astate->inflated_assembly) {
12390                 char *inflate = strstr (aot_options, "dedup-inflate");
12391                 if (!inflate)
12392                         return 0;
12393                 else
12394                         g_error ("Error: mono was not given an assembly with the provided inflate name\n");
12395         }
12396
12397         // Switch modes
12398         astate->emit_inflated_methods = TRUE;
12399
12400         int res = mono_compile_assembly (astate->inflated_assembly, opts, aot_options, aot_state);
12401
12402         *aot_state = NULL;
12403         free_aot_state (astate);
12404
12405         return res;
12406 }
12407
12408 static const char* interp_in_static_sigs[] = {
12409         "bool ptr int32 ptr&",
12410         "bool ptr ptr&",
12411         "int32 int32 ptr&",
12412         "int32 int32 ptr ptr&",
12413         "int32 ptr int32 ptr",
12414         "int32 ptr int32 ptr&",
12415         "int32 ptr ptr&",
12416         "object object ptr ptr ptr",
12417         "object",
12418         "ptr int32 ptr&",
12419         "ptr ptr int32 ptr ptr ptr&",
12420         "ptr ptr int32 ptr ptr&",
12421         "ptr ptr int32 ptr&",
12422         "ptr ptr ptr int32 ptr&",
12423         "ptr ptr ptr ptr& ptr&",
12424         "ptr ptr ptr ptr ptr&",
12425         "ptr ptr ptr ptr&",
12426         "ptr ptr ptr&",
12427         "ptr ptr uint32 ptr&",
12428         "ptr uint32 ptr&",
12429         "void object ptr ptr ptr",
12430         "void ptr ptr int32 ptr ptr& ptr ptr&",
12431         "void ptr ptr int32 ptr ptr&",
12432         "void ptr ptr ptr&",
12433         "void ptr ptr&",
12434         "void ptr",
12435         "void int32 ptr&",
12436         "void uint32 ptr&",
12437         "void"
12438 };
12439
12440 int
12441 mono_compile_assembly (MonoAssembly *ass, guint32 opts, const char *aot_options, gpointer **global_aot_state)
12442 {
12443         MonoImage *image = ass->image;
12444         int i, res;
12445         gint64 all_sizes;
12446         MonoAotCompile *acfg;
12447         char *outfile_name, *tmp_outfile_name, *p;
12448         char llvm_stats_msg [256];
12449         TV_DECLARE (atv);
12450         TV_DECLARE (btv);
12451
12452         acfg = acfg_create (ass, opts);
12453
12454         memset (&acfg->aot_opts, 0, sizeof (acfg->aot_opts));
12455         acfg->aot_opts.write_symbols = TRUE;
12456         acfg->aot_opts.ntrampolines = 4096;
12457         acfg->aot_opts.nrgctx_trampolines = 4096;
12458         acfg->aot_opts.nimt_trampolines = 512;
12459         acfg->aot_opts.nrgctx_fetch_trampolines = 128;
12460         acfg->aot_opts.ngsharedvt_arg_trampolines = 512;
12461         acfg->aot_opts.llvm_path = g_strdup ("");
12462         acfg->aot_opts.temp_path = g_strdup ("");
12463 #ifdef MONOTOUCH
12464         acfg->aot_opts.use_trampolines_page = TRUE;
12465 #endif
12466
12467         mono_aot_parse_options (aot_options, &acfg->aot_opts);
12468
12469         // start dedup
12470         MonoAotState *astate = NULL;
12471         gboolean is_dedup_dummy = FALSE;
12472         mono_setup_dedup_state (acfg, (MonoAotState **) global_aot_state, ass, &astate, &is_dedup_dummy);
12473
12474         // Process later
12475         if (is_dedup_dummy && astate && !astate->emit_inflated_methods)
12476                 return 0;
12477
12478         // end dedup
12479
12480         if (acfg->aot_opts.logfile) {
12481                 acfg->logfile = fopen (acfg->aot_opts.logfile, "a+");
12482         }
12483
12484         if (acfg->aot_opts.data_outfile) {
12485                 acfg->data_outfile = fopen (acfg->aot_opts.data_outfile, "w+");
12486                 if (!acfg->data_outfile) {
12487                         aot_printerrf (acfg, "Unable to create file '%s': %s\n", acfg->aot_opts.data_outfile, strerror (errno));
12488                         return 1;
12489                 }
12490                 acfg->flags = (MonoAotFileFlags)(acfg->flags | MONO_AOT_FILE_FLAG_SEPARATE_DATA);
12491         }
12492
12493         //acfg->aot_opts.print_skipped_methods = TRUE;
12494
12495 #if !defined(MONO_ARCH_GSHAREDVT_SUPPORTED)
12496         if (acfg->opts & MONO_OPT_GSHAREDVT) {
12497                 aot_printerrf (acfg, "-O=gsharedvt not supported on this platform.\n");
12498                 return 1;
12499         }
12500         if (acfg->aot_opts.llvm_only) {
12501                 aot_printerrf (acfg, "--aot=llvmonly requires a runtime that supports gsharedvt.\n");
12502                 return 1;
12503         }
12504 #else
12505         if (acfg->aot_opts.llvm_only || mono_aot_mode_is_full (&acfg->aot_opts) || mono_aot_mode_is_hybrid (&acfg->aot_opts))
12506                 acfg->opts |= MONO_OPT_GSHAREDVT;
12507 #endif
12508
12509 #if !defined(ENABLE_LLVM)
12510         if (acfg->aot_opts.llvm_only) {
12511                 aot_printerrf (acfg, "--aot=llvmonly requires a runtime compiled with llvm support.\n");
12512                 return 1;
12513         }
12514 #endif
12515
12516         if (acfg->opts & MONO_OPT_GSHAREDVT)
12517                 mono_set_generic_sharing_vt_supported (TRUE);
12518
12519         aot_printf (acfg, "Mono Ahead of Time compiler - compiling assembly %s\n", image->name);
12520
12521         generate_aotid ((guint8*) &acfg->image->aotid);
12522
12523         char *aotid = mono_guid_to_string (acfg->image->aotid);
12524         aot_printf (acfg, "AOTID %s\n", aotid);
12525         g_free (aotid);
12526
12527 #ifndef MONO_ARCH_HAVE_FULL_AOT_TRAMPOLINES
12528         if (mono_aot_mode_is_full (&acfg->aot_opts)) {
12529                 aot_printerrf (acfg, "--aot=full is not supported on this platform.\n");
12530                 return 1;
12531         }
12532 #endif
12533
12534         if (acfg->aot_opts.direct_pinvoke && !acfg->aot_opts.static_link) {
12535                 aot_printerrf (acfg, "The 'direct-pinvoke' AOT option also requires the 'static' AOT option.\n");
12536                 return 1;
12537         }
12538
12539         if (acfg->aot_opts.static_link)
12540                 acfg->aot_opts.asm_writer = TRUE;
12541
12542         if (acfg->aot_opts.soft_debug) {
12543                 MonoDebugOptions *opt = mini_get_debug_options ();
12544
12545                 opt->mdb_optimizations = TRUE;
12546                 opt->gen_sdb_seq_points = TRUE;
12547
12548                 if (!mono_debug_enabled ()) {
12549                         aot_printerrf (acfg, "The soft-debug AOT option requires the --debug option.\n");
12550                         return 1;
12551                 }
12552                 acfg->flags = (MonoAotFileFlags)(acfg->flags | MONO_AOT_FILE_FLAG_DEBUG);
12553         }
12554
12555         if (mono_use_llvm || acfg->aot_opts.llvm) {
12556                 acfg->llvm = TRUE;
12557                 acfg->aot_opts.asm_writer = TRUE;
12558                 acfg->flags = (MonoAotFileFlags)(acfg->flags | MONO_AOT_FILE_FLAG_WITH_LLVM);
12559
12560                 if (acfg->aot_opts.soft_debug) {
12561                         aot_printerrf (acfg, "The 'soft-debug' option is not supported when compiling with LLVM.\n");
12562                         return 1;
12563                 }
12564
12565                 mini_llvm_init ();
12566
12567                 if (acfg->aot_opts.asm_only && !acfg->aot_opts.llvm_outfile) {
12568                         aot_printerrf (acfg, "Compiling with LLVM and the asm-only option requires the llvm-outfile= option.\n");
12569                         return 1;
12570                 }
12571         }
12572
12573         if (mono_aot_mode_is_full (&acfg->aot_opts)) {
12574                 acfg->flags = (MonoAotFileFlags)(acfg->flags | MONO_AOT_FILE_FLAG_FULL_AOT);
12575                 acfg->is_full_aot = TRUE;
12576         }
12577
12578         if (mono_threads_are_safepoints_enabled ())
12579                 acfg->flags = (MonoAotFileFlags)(acfg->flags | MONO_AOT_FILE_FLAG_SAFEPOINTS);
12580
12581         // The methods in dedup-emit amodules must be available on runtime startup
12582         // Note: Only one such amodule can have this attribute
12583         if (astate && astate->emit_inflated_methods)
12584                 acfg->flags = (MonoAotFileFlags)(acfg->flags | MONO_AOT_FILE_FLAG_EAGER_LOAD);
12585
12586
12587         if (acfg->aot_opts.instances_logfile_path) {
12588                 acfg->instances_logfile = fopen (acfg->aot_opts.instances_logfile_path, "w");
12589                 if (!acfg->instances_logfile) {
12590                         aot_printerrf (acfg, "Unable to create logfile: '%s'.\n", acfg->aot_opts.instances_logfile_path);
12591                         return 1;
12592                 }
12593         }
12594
12595         if (acfg->aot_opts.profile_files) {
12596                 GList *l;
12597
12598                 for (l = acfg->aot_opts.profile_files; l; l = l->next) {
12599                         load_profile_file (acfg, (char*)l->data);
12600                 }
12601         }
12602
12603         if (!(acfg->aot_opts.interp && !mono_aot_mode_is_full (&acfg->aot_opts))) {
12604                 for (int method_index = 0; method_index < acfg->image->tables [MONO_TABLE_METHOD].rows; ++method_index)
12605                         g_ptr_array_add (acfg->method_order,GUINT_TO_POINTER (method_index));
12606         }
12607
12608         acfg->num_trampolines [MONO_AOT_TRAMP_SPECIFIC] = mono_aot_mode_is_full (&acfg->aot_opts) ? acfg->aot_opts.ntrampolines : 0;
12609 #ifdef MONO_ARCH_GSHARED_SUPPORTED
12610         acfg->num_trampolines [MONO_AOT_TRAMP_STATIC_RGCTX] = mono_aot_mode_is_full (&acfg->aot_opts) ? acfg->aot_opts.nrgctx_trampolines : 0;
12611 #endif
12612         acfg->num_trampolines [MONO_AOT_TRAMP_IMT] = mono_aot_mode_is_full (&acfg->aot_opts) ? acfg->aot_opts.nimt_trampolines : 0;
12613 #ifdef MONO_ARCH_GSHAREDVT_SUPPORTED
12614         if (acfg->opts & MONO_OPT_GSHAREDVT)
12615                 acfg->num_trampolines [MONO_AOT_TRAMP_GSHAREDVT_ARG] = mono_aot_mode_is_full (&acfg->aot_opts) ? acfg->aot_opts.ngsharedvt_arg_trampolines : 0;
12616 #endif
12617
12618         acfg->temp_prefix = mono_img_writer_get_temp_label_prefix (NULL);
12619
12620         arch_init (acfg);
12621
12622         if (mono_use_llvm || acfg->aot_opts.llvm) {
12623                 /*
12624                  * Emit all LLVM code into a separate assembly/object file and link with it
12625                  * normally.
12626                  */
12627                 if (!acfg->aot_opts.asm_only && acfg->llvm_owriter_supported) {
12628                         acfg->llvm_owriter = TRUE;
12629                 } else if (acfg->aot_opts.llvm_outfile) {
12630                         int len = strlen (acfg->aot_opts.llvm_outfile);
12631
12632                         if (len >= 2 && acfg->aot_opts.llvm_outfile [len - 2] == '.' && acfg->aot_opts.llvm_outfile [len - 1] == 'o')
12633                                 acfg->llvm_owriter = TRUE;
12634                 }
12635         }
12636
12637         if (acfg->llvm && acfg->thumb_mixed)
12638                 acfg->flags = (MonoAotFileFlags)(acfg->flags | MONO_AOT_FILE_FLAG_LLVM_THUMB);
12639         if (acfg->aot_opts.llvm_only)
12640                 acfg->flags = (MonoAotFileFlags)(acfg->flags | MONO_AOT_FILE_FLAG_LLVM_ONLY);
12641
12642         acfg->assembly_name_sym = g_strdup (acfg->image->assembly->aname.name);
12643         /* Get rid of characters which cannot occur in symbols */
12644         for (p = acfg->assembly_name_sym; *p; ++p) {
12645                 if (!(isalnum (*p) || *p == '_'))
12646                         *p = '_';
12647         }
12648
12649         acfg->global_prefix = g_strdup_printf ("mono_aot_%s", acfg->assembly_name_sym);
12650         acfg->plt_symbol = g_strdup_printf ("%s_plt", acfg->global_prefix);
12651         acfg->got_symbol = g_strdup_printf ("%s_got", acfg->global_prefix);
12652         if (acfg->llvm) {
12653                 acfg->llvm_got_symbol = g_strdup_printf ("%s_llvm_got", acfg->global_prefix);
12654                 acfg->llvm_eh_frame_symbol = g_strdup_printf ("%s_eh_frame", acfg->global_prefix);
12655         }
12656
12657         acfg->method_index = 1;
12658
12659         if (mono_aot_mode_is_full (&acfg->aot_opts) || mono_aot_mode_is_hybrid (&acfg->aot_opts))
12660                 mono_set_partial_sharing_supported (TRUE);
12661
12662         if (!(acfg->aot_opts.interp && !mono_aot_mode_is_full (&acfg->aot_opts))) {
12663                 res = collect_methods (acfg);
12664                 if (!res)
12665                         return 1;
12666         }
12667
12668         // If we're emitting all of the inflated methods into a dummy
12669         // Assembly, then after extra_methods is set up, we're done
12670         // in this function.
12671         if (astate && astate->emit_inflated_methods)
12672                 mono_add_deferred_extra_methods (acfg, astate);
12673
12674         {
12675                 GList *l;
12676
12677                 for (l = acfg->profile_data; l; l = l->next)
12678                         resolve_profile_data (acfg, (ProfileData*)l->data);
12679                 for (l = acfg->profile_data; l; l = l->next)
12680                         add_profile_instances (acfg, (ProfileData*)l->data);
12681         }
12682
12683         acfg->cfgs_size = acfg->methods->len + 32;
12684         acfg->cfgs = g_new0 (MonoCompile*, acfg->cfgs_size);
12685
12686         /* PLT offset 0 is reserved for the PLT trampoline */
12687         acfg->plt_offset = 1;
12688         add_preinit_got_slots (acfg);
12689
12690 #ifdef ENABLE_LLVM
12691         if (acfg->llvm) {
12692                 llvm_acfg = acfg;
12693                 mono_llvm_create_aot_module (acfg->image->assembly, acfg->global_prefix, acfg->nshared_got_entries, TRUE, acfg->aot_opts.static_link, acfg->aot_opts.llvm_only);
12694         }
12695 #endif
12696
12697         if (mono_aot_mode_is_interp (&acfg->aot_opts)) {
12698                 for (int i = 0; i < sizeof (interp_in_static_sigs) / sizeof (const char *); i++) {
12699                         MonoMethodSignature *sig = mono_create_icall_signature (interp_in_static_sigs [i]);
12700                         sig = mono_metadata_signature_dup_full (mono_get_corlib (), sig);
12701                         sig->pinvoke = FALSE;
12702                         MonoMethod *wrapper = mini_get_interp_in_wrapper (sig);
12703                         add_method (acfg, wrapper);
12704                 }
12705         }
12706
12707         TV_GETTIME (atv);
12708
12709         compile_methods (acfg);
12710
12711         TV_GETTIME (btv);
12712
12713         acfg->stats.jit_time = TV_ELAPSED (atv, btv);
12714
12715         TV_GETTIME (atv);
12716
12717 #ifdef ENABLE_LLVM
12718         if (acfg->llvm) {
12719                 if (acfg->aot_opts.asm_only) {
12720                         if (acfg->aot_opts.outfile) {
12721                                 acfg->tmpfname = g_strdup_printf ("%s", acfg->aot_opts.outfile);
12722                                 acfg->tmpbasename = g_strdup (acfg->tmpfname);
12723                         } else {
12724                                 acfg->tmpbasename = g_strdup_printf ("%s", acfg->image->name);
12725                                 acfg->tmpfname = g_strdup_printf ("%s.s", acfg->tmpbasename);
12726                         }
12727                         g_assert (acfg->aot_opts.llvm_outfile);
12728                         acfg->llvm_sfile = g_strdup (acfg->aot_opts.llvm_outfile);
12729                         if (acfg->llvm_owriter)
12730                                 acfg->llvm_ofile = g_strdup (acfg->aot_opts.llvm_outfile);
12731                         else
12732                                 acfg->llvm_sfile = g_strdup (acfg->aot_opts.llvm_outfile);
12733                 } else {
12734                         acfg->tmpbasename = (strcmp (acfg->aot_opts.temp_path, "") == 0) ?
12735                                 g_strdup_printf ("%s", "temp") :
12736                                 g_build_filename (acfg->aot_opts.temp_path, "temp", NULL);
12737
12738                         acfg->tmpfname = g_strdup_printf ("%s.s", acfg->tmpbasename);
12739                         acfg->llvm_sfile = g_strdup_printf ("%s-llvm.s", acfg->tmpbasename);
12740                         acfg->llvm_ofile = g_strdup_printf ("%s-llvm.o", acfg->tmpbasename);
12741                 }
12742         }
12743 #endif
12744
12745         if (acfg->aot_opts.asm_only && !acfg->aot_opts.llvm_only) {
12746                 if (acfg->aot_opts.outfile)
12747                         acfg->tmpfname = g_strdup_printf ("%s", acfg->aot_opts.outfile);
12748                 else
12749                         acfg->tmpfname = g_strdup_printf ("%s.s", acfg->image->name);
12750                 acfg->fp = fopen (acfg->tmpfname, "w+");
12751         } else {
12752                 if (strcmp (acfg->aot_opts.temp_path, "") == 0) {
12753                         int i = g_file_open_tmp ("mono_aot_XXXXXX", &acfg->tmpfname, NULL);
12754                         acfg->fp = fdopen (i, "w+");
12755                 } else {
12756                         acfg->tmpbasename = g_build_filename (acfg->aot_opts.temp_path, "temp", NULL);
12757                         acfg->tmpfname = g_strdup_printf ("%s.s", acfg->tmpbasename);
12758                         acfg->fp = fopen (acfg->tmpfname, "w+");
12759                 }
12760         }
12761         if (acfg->fp == 0 && !acfg->aot_opts.llvm_only) {
12762                 aot_printerrf (acfg, "Unable to open file '%s': %s\n", acfg->tmpfname, strerror (errno));
12763                 return 1;
12764         }
12765         if (acfg->fp)
12766                 acfg->w = mono_img_writer_create (acfg->fp, FALSE);
12767
12768         tmp_outfile_name = NULL;
12769         outfile_name = NULL;
12770
12771         /* Compute symbols for methods */
12772         for (i = 0; i < acfg->nmethods; ++i) {
12773                 if (acfg->cfgs [i]) {
12774                         MonoCompile *cfg = acfg->cfgs [i];
12775                         int method_index = get_method_index (acfg, cfg->orig_method);
12776
12777                         if (COMPILE_LLVM (cfg))
12778                                 cfg->asm_symbol = g_strdup_printf ("%s%s", acfg->llvm_label_prefix, cfg->llvm_method_name);
12779                         else if (acfg->global_symbols || acfg->llvm)
12780                                 cfg->asm_symbol = get_debug_sym (cfg->orig_method, "", acfg->method_label_hash);
12781                         else
12782                                 cfg->asm_symbol = g_strdup_printf ("%s%sm_%x", acfg->temp_prefix, acfg->llvm_label_prefix, method_index);
12783                         cfg->asm_debug_symbol = cfg->asm_symbol;
12784                 }
12785         }
12786
12787         if (acfg->aot_opts.dwarf_debug && acfg->aot_opts.gnu_asm) {
12788                 /*
12789                  * CLANG supports GAS .file/.loc directives, so emit line number information this way
12790                  */
12791                 acfg->gas_line_numbers = TRUE;
12792         }
12793
12794 #ifdef EMIT_DWARF_INFO
12795         if ((!acfg->aot_opts.nodebug || acfg->aot_opts.dwarf_debug) && acfg->has_jitted_code) {
12796                 if (acfg->aot_opts.dwarf_debug && !mono_debug_enabled ()) {
12797                         aot_printerrf (acfg, "The dwarf AOT option requires the --debug option.\n");
12798                         return 1;
12799                 }
12800                 acfg->dwarf = mono_dwarf_writer_create (acfg->w, NULL, 0, !acfg->gas_line_numbers);
12801         }
12802 #endif /* EMIT_DWARF_INFO */
12803
12804         if (acfg->w)
12805                 mono_img_writer_emit_start (acfg->w);
12806
12807         if (acfg->dwarf)
12808                 mono_dwarf_writer_emit_base_info (acfg->dwarf, g_path_get_basename (acfg->image->name), mono_unwind_get_cie_program ());
12809
12810         emit_code (acfg);
12811         if (acfg->aot_opts.dedup)
12812                 mono_flush_method_cache (acfg);
12813         if (acfg->aot_opts.dedup || acfg->dedup_emit_mode)
12814                 mono_dedup_log_stats (acfg);
12815
12816         emit_info (acfg);
12817
12818         emit_extra_methods (acfg);
12819
12820         if (acfg->aot_opts.dedup_include && !is_dedup_dummy) {
12821                 fclose (acfg->fp);
12822                 return 0;
12823         }
12824
12825         emit_trampolines (acfg);
12826
12827         emit_class_name_table (acfg);
12828
12829         emit_got_info (acfg, FALSE);
12830         if (acfg->llvm)
12831                 emit_got_info (acfg, TRUE);
12832
12833         emit_exception_info (acfg);
12834
12835         emit_unwind_info (acfg);
12836
12837         emit_class_info (acfg);
12838
12839         emit_plt (acfg);
12840
12841         emit_image_table (acfg);
12842
12843         emit_weak_field_indexes (acfg);
12844
12845         emit_got (acfg);
12846
12847         {
12848                 /*
12849                  * The managed allocators are GC specific, so can't use an AOT image created by one GC
12850                  * in another.
12851                  */
12852                 const char *gc_name = mono_gc_get_gc_name ();
12853                 acfg->gc_name_offset = add_to_blob (acfg, (guint8*)gc_name, strlen (gc_name) + 1);
12854         }
12855
12856         emit_blob (acfg);
12857
12858         emit_objc_selectors (acfg);
12859
12860         emit_globals (acfg);
12861
12862         emit_file_info (acfg);
12863
12864         emit_library_info (acfg);
12865
12866         if (acfg->dwarf) {
12867                 emit_dwarf_info (acfg);
12868                 mono_dwarf_writer_close (acfg->dwarf);
12869         } else {
12870                 if (!acfg->aot_opts.nodebug)
12871                         emit_codeview_info (acfg);
12872         }
12873
12874         emit_mem_end (acfg);
12875
12876         if (acfg->need_pt_gnu_stack) {
12877                 /* This is required so the .so doesn't have an executable stack */
12878                 /* The bin writer already emits this */
12879                 fprintf (acfg->fp, "\n.section  .note.GNU-stack,\"\",@progbits\n");
12880         }
12881
12882         if (acfg->aot_opts.data_outfile)
12883                 fclose (acfg->data_outfile);
12884
12885 #ifdef ENABLE_LLVM
12886         if (acfg->llvm) {
12887                 gboolean res;
12888
12889                 res = emit_llvm_file (acfg);
12890                 if (!res)
12891                         return 1;
12892         }
12893 #endif
12894
12895         TV_GETTIME (btv);
12896
12897         acfg->stats.gen_time = TV_ELAPSED (atv, btv);
12898
12899         if (acfg->llvm)
12900                 sprintf (llvm_stats_msg, ", LLVM: %d (%d%%)", acfg->stats.llvm_count, acfg->stats.mcount ? (acfg->stats.llvm_count * 100) / acfg->stats.mcount : 100);
12901         else
12902                 strcpy (llvm_stats_msg, "");
12903
12904         all_sizes = acfg->stats.code_size + acfg->stats.info_size + acfg->stats.ex_info_size + acfg->stats.unwind_info_size + acfg->stats.class_info_size + acfg->stats.got_info_size + acfg->stats.offsets_size + acfg->stats.plt_size;
12905
12906         aot_printf (acfg, "Code: %d(%d%%) Info: %d(%d%%) Ex Info: %d(%d%%) Unwind Info: %d(%d%%) Class Info: %d(%d%%) PLT: %d(%d%%) GOT Info: %d(%d%%) Offsets: %d(%d%%) GOT: %d\n",
12907                                 (int)acfg->stats.code_size, (int)(acfg->stats.code_size * 100 / all_sizes),
12908                                 (int)acfg->stats.info_size, (int)(acfg->stats.info_size * 100 / all_sizes),
12909                                 (int)acfg->stats.ex_info_size, (int)(acfg->stats.ex_info_size * 100 / all_sizes),
12910                                 (int)acfg->stats.unwind_info_size, (int)(acfg->stats.unwind_info_size * 100 / all_sizes),
12911                                 (int)acfg->stats.class_info_size, (int)(acfg->stats.class_info_size * 100 / all_sizes),
12912                                 acfg->stats.plt_size ? (int)acfg->stats.plt_size : (int)acfg->plt_offset, acfg->stats.plt_size ? (int)(acfg->stats.plt_size * 100 / all_sizes) : 0,
12913                                 (int)acfg->stats.got_info_size, (int)(acfg->stats.got_info_size * 100 / all_sizes),
12914                                 (int)acfg->stats.offsets_size, (int)(acfg->stats.offsets_size * 100 / all_sizes),
12915                         (int)(acfg->got_offset * sizeof (gpointer)));
12916         aot_printf (acfg, "Compiled: %d/%d (%d%%)%s, No GOT slots: %d (%d%%), Direct calls: %d (%d%%)\n",
12917                         acfg->stats.ccount, acfg->stats.mcount, acfg->stats.mcount ? (acfg->stats.ccount * 100) / acfg->stats.mcount : 100,
12918                         llvm_stats_msg,
12919                         acfg->stats.methods_without_got_slots, acfg->stats.mcount ? (acfg->stats.methods_without_got_slots * 100) / acfg->stats.mcount : 100,
12920                         acfg->stats.direct_calls, acfg->stats.all_calls ? (acfg->stats.direct_calls * 100) / acfg->stats.all_calls : 100);
12921         if (acfg->stats.genericcount)
12922                 aot_printf (acfg, "%d methods are generic (%d%%)\n", acfg->stats.genericcount, acfg->stats.mcount ? (acfg->stats.genericcount * 100) / acfg->stats.mcount : 100);
12923         if (acfg->stats.abscount)
12924                 aot_printf (acfg, "%d methods contain absolute addresses (%d%%)\n", acfg->stats.abscount, acfg->stats.mcount ? (acfg->stats.abscount * 100) / acfg->stats.mcount : 100);
12925         if (acfg->stats.lmfcount)
12926                 aot_printf (acfg, "%d methods contain lmf pointers (%d%%)\n", acfg->stats.lmfcount, acfg->stats.mcount ? (acfg->stats.lmfcount * 100) / acfg->stats.mcount : 100);
12927         if (acfg->stats.ocount)
12928                 aot_printf (acfg, "%d methods have other problems (%d%%)\n", acfg->stats.ocount, acfg->stats.mcount ? (acfg->stats.ocount * 100) / acfg->stats.mcount : 100);
12929
12930         TV_GETTIME (atv);
12931         if (acfg->w) {
12932                 res = mono_img_writer_emit_writeout (acfg->w);
12933                 if (res != 0) {
12934                         acfg_free (acfg);
12935                         return res;
12936                 }
12937                 res = compile_asm (acfg);
12938                 if (res != 0) {
12939                         acfg_free (acfg);
12940                         return res;
12941                 }
12942         }
12943         TV_GETTIME (btv);
12944         acfg->stats.link_time = TV_ELAPSED (atv, btv);
12945
12946         if (acfg->aot_opts.stats) {
12947                 int i;
12948
12949                 aot_printf (acfg, "GOT slot distribution:\n");
12950                 for (i = 0; i < MONO_PATCH_INFO_NUM; ++i)
12951                         if (acfg->stats.got_slot_types [i])
12952                                 aot_printf (acfg, "\t%s: %d (%d)\n", get_patch_name (i), acfg->stats.got_slot_types [i], acfg->stats.got_slot_info_sizes [i]);
12953                 aot_printf (acfg, "\nMethod stats:\n");
12954                 aot_printf (acfg, "\tNormal:    %d\n", acfg->stats.method_categories [METHOD_CAT_NORMAL]);
12955                 aot_printf (acfg, "\tInstance:  %d\n", acfg->stats.method_categories [METHOD_CAT_INST]);
12956                 aot_printf (acfg, "\tGSharedvt: %d\n", acfg->stats.method_categories [METHOD_CAT_GSHAREDVT]);
12957                 aot_printf (acfg, "\tWrapper:   %d\n", acfg->stats.method_categories [METHOD_CAT_WRAPPER]);
12958         }
12959
12960         aot_printf (acfg, "JIT time: %d ms, Generation time: %d ms, Assembly+Link time: %d ms.\n", acfg->stats.jit_time / 1000, acfg->stats.gen_time / 1000, acfg->stats.link_time / 1000);
12961
12962         if (acfg->aot_opts.dump_json)
12963                 aot_dump (acfg);
12964
12965         acfg_free (acfg);
12966
12967         return 0;
12968 }
12969
12970 #else
12971
12972 /* AOT disabled */
12973
12974 void*
12975 mono_aot_readonly_field_override (MonoClassField *field)
12976 {
12977         return NULL;
12978 }
12979
12980 int
12981 mono_compile_assembly (MonoAssembly *ass, guint32 opts, const char *aot_options, gpointer **aot_state)
12982 {
12983         return 0;
12984 }
12985
12986 gboolean
12987 mono_aot_is_shared_got_offset (int offset)
12988 {
12989         return FALSE;
12990 }
12991
12992 int
12993 mono_compile_deferred_assemblies (guint32 opts, const char *aot_options, gpointer **aot_state)
12994 {
12995         g_assert_not_reached ();
12996         return 0;
12997 }
12998
12999 #endif