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 no_dlsym;
 168         gboolean static_link;
 169         gboolean asm_only;
 170         gboolean asm_writer;
 171         gboolean nodebug;
 172         gboolean dwarf_debug;
 173         gboolean soft_debug;
 174         gboolean log_generics;
 175         gboolean log_instances;
 176         gboolean gen_msym_dir;
 177         char *gen_msym_dir_path;
 178         gboolean direct_pinvoke;
 179         gboolean direct_icalls;
 180         gboolean no_direct_calls;
 181         gboolean use_trampolines_page;
 182         gboolean no_instances;
 183         // We are collecting inflated methods and emitting non-inflated
 184         gboolean dedup;
 185         // The name of the assembly for which the AOT module is going to have all deduped methods moved to.
 186         // When set, we are emitting inflated methods only
 187         char *dedup_include;
 188         gboolean gnu_asm;
 189         gboolean llvm;
 190         gboolean llvm_only;
 191         int nthreads;
 192         int ntrampolines;
 193         int nrgctx_trampolines;
 194         int nimt_trampolines;
 195         int ngsharedvt_arg_trampolines;
 196         int nrgctx_fetch_trampolines;
 197         gboolean print_skipped_methods;
 198         gboolean stats;
 199         gboolean verbose;
 200         char *tool_prefix;
 201         char *ld_flags;
 202         char *mtriple;
 203         char *llvm_path;
 204         char *temp_path;
 205         char *instances_logfile_path;
 206         char *logfile;
 207         gboolean dump_json;
 208         gboolean profile_only;
 209 } MonoAotOptions;
 210
 211 typedef enum {
 212         METHOD_CAT_NORMAL,
 213         METHOD_CAT_GSHAREDVT,
 214         METHOD_CAT_INST,
 215         METHOD_CAT_WRAPPER,
 216         METHOD_CAT_NUM
 217 } MethodCategory;
 218
 219 typedef struct MonoAotStats {
 220         int ccount, mcount, lmfcount, abscount, gcount, ocount, genericcount;
 221         gint64 code_size, info_size, ex_info_size, unwind_info_size, got_size, class_info_size, got_info_size, plt_size;
 222         int methods_without_got_slots, direct_calls, all_calls, llvm_count;
 223         int got_slots, offsets_size;
 224         int method_categories [METHOD_CAT_NUM];
 225         int got_slot_types [MONO_PATCH_INFO_NUM];
 226         int got_slot_info_sizes [MONO_PATCH_INFO_NUM];
 227         int jit_time, gen_time, link_time;
 228 } MonoAotStats;
 229
 230 typedef struct GotInfo {
 231         GHashTable *patch_to_got_offset;
 232         GHashTable **patch_to_got_offset_by_type;
 233         GPtrArray *got_patches;
 234 } GotInfo;
 235
 236 #ifdef EMIT_WIN32_UNWIND_INFO
 237 typedef struct _UnwindInfoSectionCacheItem {
 238         char *xdata_section_label;
 239         PUNWIND_INFO unwind_info;
 240         gboolean xdata_section_emitted;
 241 } UnwindInfoSectionCacheItem;
 242 #endif
 243
 244 typedef struct MonoAotCompile {
 245         MonoImage *image;
 246         GPtrArray *methods;
 247         GHashTable *method_indexes;
 248         GHashTable *method_depth;
 249         MonoCompile **cfgs;
 250         int cfgs_size;
 251         GHashTable **patch_to_plt_entry;
 252         GHashTable *plt_offset_to_entry;
 253         //GHashTable *patch_to_got_offset;
 254         //GHashTable **patch_to_got_offset_by_type;
 255         //GPtrArray *got_patches;
 256         GotInfo got_info, llvm_got_info;
 257         GHashTable *image_hash;
 258         GHashTable *method_to_cfg;
 259         GHashTable *token_info_hash;
 260         GHashTable *method_to_pinvoke_import;
 261         GPtrArray *extra_methods;
 262         GPtrArray *image_table;
 263         GPtrArray *globals;
 264         GPtrArray *method_order;
 265         GHashTable *dedup_stats;
 266         GHashTable *dedup_cache;
 267         gboolean dedup_cache_changed;
 268         GHashTable *export_names;
 269         /* Maps MonoClass* -> blob offset */
 270         GHashTable *klass_blob_hash;
 271         /* Maps MonoMethod* -> blob offset */
 272         GHashTable *method_blob_hash;
 273         GHashTable *gsharedvt_in_signatures;
 274         GHashTable *gsharedvt_out_signatures;
 275         guint32 *plt_got_info_offsets;
 276         guint32 got_offset, llvm_got_offset, plt_offset, plt_got_offset_base, nshared_got_entries;
 277         /* Number of GOT entries reserved for trampolines */
 278         guint32 num_trampoline_got_entries;
 279         guint32 tramp_page_size;
 280
 281         guint32 table_offsets [MONO_AOT_TABLE_NUM];
 282         guint32 num_trampolines [MONO_AOT_TRAMP_NUM];
 283         guint32 trampoline_got_offset_base [MONO_AOT_TRAMP_NUM];
 284         guint32 trampoline_size [MONO_AOT_TRAMP_NUM];
 285         guint32 tramp_page_code_offsets [MONO_AOT_TRAMP_NUM];
 286
 287         MonoAotOptions aot_opts;
 288         guint32 nmethods;
 289         guint32 opts;
 290         guint32 simd_opts;
 291         MonoMemPool *mempool;
 292         MonoAotStats stats;
 293         int method_index;
 294         char *static_linking_symbol;
 295         mono_mutex_t mutex;
 296         gboolean gas_line_numbers;
 297         /* Whenever to emit an object file directly from llc */
 298         gboolean llvm_owriter;
 299         gboolean llvm_owriter_supported;
 300         MonoImageWriter *w;
 301         MonoDwarfWriter *dwarf;
 302         FILE *fp;
 303         char *tmpbasename;
 304         char *tmpfname;
 305         char *llvm_sfile;
 306         char *llvm_ofile;
 307         GSList *cie_program;
 308         GHashTable *unwind_info_offsets;
 309         GPtrArray *unwind_ops;
 310         guint32 unwind_info_offset;
 311         char *global_prefix;
 312         char *got_symbol;
 313         char *llvm_got_symbol;
 314         char *plt_symbol;
 315         char *llvm_eh_frame_symbol;
 316         GHashTable *method_label_hash;
 317         const char *temp_prefix;
 318         const char *user_symbol_prefix;
 319         const char *llvm_label_prefix;
 320         const char *inst_directive;
 321         int align_pad_value;
 322         guint32 label_generator;
 323         gboolean llvm;
 324         gboolean has_jitted_code;
 325         gboolean is_full_aot;
 326         MonoAotFileFlags flags;
 327         MonoDynamicStream blob;
 328         gboolean blob_closed;
 329         GHashTable *typespec_classes;
 330         GString *llc_args;
 331         GString *as_args;
 332         char *assembly_name_sym;
 333         GHashTable *plt_entry_debug_sym_cache;
 334         gboolean thumb_mixed, need_no_dead_strip, need_pt_gnu_stack;
 335         GHashTable *ginst_hash;
 336         GHashTable *dwarf_ln_filenames;
 337         gboolean global_symbols;
 338         int objc_selector_index, objc_selector_index_2;
 339         GPtrArray *objc_selectors;
 340         GHashTable *objc_selector_to_index;
 341         GList *profile_data;
 342         GHashTable *profile_methods;
 343 #ifdef EMIT_WIN32_UNWIND_INFO
 344         GList *unwind_info_section_cache;
 345 #endif
 346         FILE *logfile;
 347         FILE *instances_logfile;
 348         FILE *data_outfile;
 349         int datafile_offset;
 350         int gc_name_offset;
 351         // In this mode, we are emitting dedupable methods that we encounter
 352         gboolean dedup_emit_mode;
 353 } MonoAotCompile;
 354
 355 typedef struct {
 356         int plt_offset;
 357         char *symbol, *llvm_symbol, *debug_sym;
 358         MonoJumpInfo *ji;
 359         gboolean jit_used, llvm_used;
 360 } MonoPltEntry;
 361
 362 #define mono_acfg_lock(acfg) mono_os_mutex_lock (&((acfg)->mutex))
 363 #define mono_acfg_unlock(acfg) mono_os_mutex_unlock (&((acfg)->mutex))
 364
 365 /* This points to the current acfg in LLVM mode */
 366 static MonoAotCompile *llvm_acfg;
 367
 368 #ifdef HAVE_ARRAY_ELEM_INIT
 369 #define MSGSTRFIELD(line) MSGSTRFIELD1(line)
 370 #define MSGSTRFIELD1(line) str##line
 371 static const struct msgstr_t {
 372 #define PATCH_INFO(a,b) char MSGSTRFIELD(__LINE__) [sizeof (b)];
 373 #include "patch-info.h"
 374 #undef PATCH_INFO
 375 } opstr = {
 376 #define PATCH_INFO(a,b) b,
 377 #include "patch-info.h"
 378 #undef PATCH_INFO
 379 };
 380 static const gint16 opidx [] = {
 381 #define PATCH_INFO(a,b) [MONO_PATCH_INFO_ ## a] = offsetof (struct msgstr_t, MSGSTRFIELD(__LINE__)),
 382 #include "patch-info.h"
 383 #undef PATCH_INFO
 384 };
 385
 386 static G_GNUC_UNUSED const char*
 387 get_patch_name (int info)
 388 {
 389         return (const char*)&opstr + opidx [info];
 390 }
 391
 392 #else
 393 #define PATCH_INFO(a,b) b,
 394 static const char* const
 395 patch_types [MONO_PATCH_INFO_NUM + 1] = {
 396 #include "patch-info.h"
 397         NULL
 398 };
 399
 400 static G_GNUC_UNUSED const char*
 401 get_patch_name (int info)
 402 {
 403         return patch_types [info];
 404 }
 405
 406 #endif
 407
 408 static void
 409 mono_flush_method_cache (MonoAotCompile *acfg);
 410
 411 static void
 412 mono_read_method_cache (MonoAotCompile *acfg);
 413
 414 static guint32
 415 get_unwind_info_offset (MonoAotCompile *acfg, guint8 *encoded, guint32 encoded_len);
 416
 417 static char*
 418 get_plt_entry_debug_sym (MonoAotCompile *acfg, MonoJumpInfo *ji, GHashTable *cache);
 419
 420 static void
 421 add_gsharedvt_wrappers (MonoAotCompile *acfg, MonoMethodSignature *sig, gboolean gsharedvt_in, gboolean gsharedvt_out);
 422
 423 static void
 424 add_profile_instances (MonoAotCompile *acfg, ProfileData *data);
 425
 426 static inline gboolean
 427 ignore_cfg (MonoCompile *cfg)
 428 {
 429         return !cfg || cfg->skip;
 430 }
 431
 432 static void
 433 aot_printf (MonoAotCompile *acfg, const gchar *format, ...)
 434 {
 435         FILE *output;
 436         va_list args;
 437
 438         if (acfg->logfile)
 439                 output = acfg->logfile;
 440         else
 441                 output = stdout;
 442
 443         va_start (args, format);
 444         vfprintf (output, format, args);
 445         va_end (args);
 446 }
 447
 448 static void
 449 aot_printerrf (MonoAotCompile *acfg, const gchar *format, ...)
 450 {
 451         FILE *output;
 452         va_list args;
 453
 454         if (acfg->logfile)
 455                 output = acfg->logfile;
 456         else
 457                 output = stderr;
 458
 459         va_start (args, format);
 460         vfprintf (output, format, args);
 461         va_end (args);
 462 }
 463
 464 static void
 465 report_loader_error (MonoAotCompile *acfg, MonoError *error, gboolean fatal, const char *format, ...)
 466 {
 467         FILE *output;
 468         va_list args;
 469
 470         if (mono_error_ok (error))
 471                 return;
 472
 473         if (acfg->logfile)
 474                 output = acfg->logfile;
 475         else
 476                 output = stderr;
 477
 478         va_start (args, format);
 479         vfprintf (output, format, args);
 480         va_end (args);
 481         mono_error_cleanup (error);
 482
 483         if (acfg->is_full_aot && fatal) {
 484                 fprintf (output, "FullAOT cannot continue if there are loader errors.\n");
 485                 exit (1);
 486         }
 487 }
 488
 489 /* Wrappers around the image writer functions */
 490
 491 #define MAX_SYMBOL_SIZE 256
 492
 493 static inline const char *
 494 mangle_symbol (const char * symbol, char * mangled_symbol, gsize length)
 495 {
 496         gsize needed_size = length;
 497
 498         g_assert (NULL != symbol);
 499         g_assert (NULL != mangled_symbol);
 500         g_assert (0 != length);
 501
 502 #if defined(TARGET_WIN32) && defined(TARGET_X86)
 503         if (symbol && '_' != symbol [0]) {
 504                 needed_size = g_snprintf (mangled_symbol, length, "_%s", symbol);
 505         } else {
 506                 needed_size = g_snprintf (mangled_symbol, length, "%s", symbol);
 507         }
 508 #else
 509         needed_size = g_snprintf (mangled_symbol, length, "%s", symbol);
 510 #endif
 511
 512         g_assert (0 <= needed_size && needed_size < length);
 513         return mangled_symbol;
 514 }
 515
 516 static inline char *
 517 mangle_symbol_alloc (const char * symbol)
 518 {
 519         g_assert (NULL != symbol);
 520
 521 #if defined(TARGET_WIN32) && defined(TARGET_X86)
 522         if (symbol && '_' != symbol [0]) {
 523                 return g_strdup_printf ("_%s", symbol);
 524         }
 525         else {
 526                 return g_strdup_printf ("%s", symbol);
 527         }
 528 #else
 529         return g_strdup_printf ("%s", symbol);
 530 #endif
 531 }
 532
 533 static inline void
 534 emit_section_change (MonoAotCompile *acfg, const char *section_name, int subsection_index)
 535 {
 536         mono_img_writer_emit_section_change (acfg->w, section_name, subsection_index);
 537 }
 538
 539 #if defined(TARGET_WIN32) && defined(TARGET_X86)
 540
 541 static inline void
 542 emit_local_symbol (MonoAotCompile *acfg, const char *name, const char *end_label, gboolean func)
 543 {
 544         const char * mangled_symbol_name = name;
 545         char * mangled_symbol_name_alloc = NULL;
 546
 547         if (TRUE == func) {
 548                 mangled_symbol_name_alloc = mangle_symbol_alloc (name);
 549                 mangled_symbol_name = mangled_symbol_name_alloc;
 550         }
 551
 552         if (name != mangled_symbol_name && 0 != g_strcasecmp (name, mangled_symbol_name)) {
 553                 mono_img_writer_emit_label (acfg->w, mangled_symbol_name);
 554         }
 555         mono_img_writer_emit_local_symbol (acfg->w, mangled_symbol_name, end_label, func);
 556
 557         if (NULL != mangled_symbol_name_alloc) {
 558                 g_free (mangled_symbol_name_alloc);
 559         }
 560 }
 561
 562 #else
 563
 564 static inline void
 565 emit_local_symbol (MonoAotCompile *acfg, const char *name, const char *end_label, gboolean func)
 566 {
 567         mono_img_writer_emit_local_symbol (acfg->w, name, end_label, func);
 568 }
 569
 570 #endif
 571
 572 static inline void
 573 emit_label (MonoAotCompile *acfg, const char *name)
 574 {
 575         mono_img_writer_emit_label (acfg->w, name);
 576 }
 577
 578 static inline void
 579 emit_bytes (MonoAotCompile *acfg, const guint8* buf, int size)
 580 {
 581         mono_img_writer_emit_bytes (acfg->w, buf, size);
 582 }
 583
 584 static inline void
 585 emit_string (MonoAotCompile *acfg, const char *value)
 586 {
 587         mono_img_writer_emit_string (acfg->w, value);
 588 }
 589
 590 static inline void
 591 emit_line (MonoAotCompile *acfg)
 592 {
 593         mono_img_writer_emit_line (acfg->w);
 594 }
 595
 596 static inline void
 597 emit_alignment (MonoAotCompile *acfg, int size)
 598 {
 599         mono_img_writer_emit_alignment (acfg->w, size);
 600 }
 601
 602 static inline void
 603 emit_alignment_code (MonoAotCompile *acfg, int size)
 604 {
 605         if (acfg->align_pad_value)
 606                 mono_img_writer_emit_alignment_fill (acfg->w, size, acfg->align_pad_value);
 607         else
 608                 mono_img_writer_emit_alignment (acfg->w, size);
 609 }
 610
 611 static inline void
 612 emit_padding (MonoAotCompile *acfg, int size)
 613 {
 614         int i;
 615         guint8 buf [16];
 616
 617         if (acfg->align_pad_value) {
 618                 for (i = 0; i < 16; ++i)
 619                         buf [i] = acfg->align_pad_value;
 620         } else {
 621                 memset (buf, 0, sizeof (buf));
 622         }
 623
 624         for (i = 0; i < size; i += 16) {
 625                 if (size - i < 16)
 626                         emit_bytes (acfg, buf, size - i);
 627                 else
 628                         emit_bytes (acfg, buf, 16);
 629         }
 630 }
 631
 632 static inline void
 633 emit_pointer (MonoAotCompile *acfg, const char *target)
 634 {
 635         mono_img_writer_emit_pointer (acfg->w, target);
 636 }
 637
 638 static inline void
 639 emit_pointer_2 (MonoAotCompile *acfg, const char *prefix, const char *target)
 640 {
 641         if (prefix [0] != '\0') {
 642                 char *s = g_strdup_printf ("%s%s", prefix, target);
 643                 mono_img_writer_emit_pointer (acfg->w, s);
 644                 g_free (s);
 645         } else {
 646                 mono_img_writer_emit_pointer (acfg->w, target);
 647         }
 648 }
 649
 650 static inline void
 651 emit_int16 (MonoAotCompile *acfg, int value)
 652 {
 653         mono_img_writer_emit_int16 (acfg->w, value);
 654 }
 655
 656 static inline void
 657 emit_int32 (MonoAotCompile *acfg, int value)
 658 {
 659         mono_img_writer_emit_int32 (acfg->w, value);
 660 }
 661
 662 static inline void
 663 emit_symbol_diff (MonoAotCompile *acfg, const char *end, const char* start, int offset)
 664 {
 665         mono_img_writer_emit_symbol_diff (acfg->w, end, start, offset);
 666 }
 667
 668 static inline void
 669 emit_zero_bytes (MonoAotCompile *acfg, int num)
 670 {
 671         mono_img_writer_emit_zero_bytes (acfg->w, num);
 672 }
 673
 674 static inline void
 675 emit_byte (MonoAotCompile *acfg, guint8 val)
 676 {
 677         mono_img_writer_emit_byte (acfg->w, val);
 678 }
 679
 680 #if defined(TARGET_WIN32) && defined(TARGET_X86)
 681
 682 static G_GNUC_UNUSED void
 683 emit_global_inner (MonoAotCompile *acfg, const char *name, gboolean func)
 684 {
 685         const char * mangled_symbol_name = name;
 686         char * mangled_symbol_name_alloc = NULL;
 687
 688         mangled_symbol_name_alloc = mangle_symbol_alloc (name);
 689         mangled_symbol_name = mangled_symbol_name_alloc;
 690
 691         if (0 != g_strcasecmp (name, mangled_symbol_name)) {
 692                 mono_img_writer_emit_label (acfg->w, mangled_symbol_name);
 693         }
 694         mono_img_writer_emit_global (acfg->w, mangled_symbol_name, func);
 695
 696         if (NULL != mangled_symbol_name_alloc) {
 697                 g_free (mangled_symbol_name_alloc);
 698         }
 699 }
 700
 701 #else
 702
 703 static G_GNUC_UNUSED void
 704 emit_global_inner (MonoAotCompile *acfg, const char *name, gboolean func)
 705 {
 706         mono_img_writer_emit_global (acfg->w, name, func);
 707 }
 708
 709 #endif
 710
 711 static inline gboolean
 712 link_shared_library (MonoAotCompile *acfg)
 713 {
 714         return !acfg->aot_opts.static_link && !acfg->aot_opts.asm_only;
 715 }
 716
 717 static inline gboolean
 718 add_to_global_symbol_table (MonoAotCompile *acfg)
 719 {
 720 #ifdef TARGET_WIN32_MSVC
 721         return acfg->aot_opts.no_dlsym || link_shared_library (acfg);
 722 #else
 723         return acfg->aot_opts.no_dlsym;
 724 #endif
 725 }
 726
 727 static void
 728 emit_global (MonoAotCompile *acfg, const char *name, gboolean func)
 729 {
 730         if (add_to_global_symbol_table (acfg))
 731                 g_ptr_array_add (acfg->globals, g_strdup (name));
 732
 733         if (acfg->aot_opts.no_dlsym) {
 734                 mono_img_writer_emit_local_symbol (acfg->w, name, NULL, func);
 735         } else {
 736                 emit_global_inner (acfg, name, func);
 737         }
 738 }
 739
 740 static void
 741 emit_symbol_size (MonoAotCompile *acfg, const char *name, const char *end_label)
 742 {
 743         mono_img_writer_emit_symbol_size (acfg->w, name, end_label);
 744 }
 745
 746 /* Emit a symbol which is referenced by the MonoAotFileInfo structure */
 747 static void
 748 emit_info_symbol (MonoAotCompile *acfg, const char *name)
 749 {
 750         char symbol [MAX_SYMBOL_SIZE];
 751
 752         if (acfg->llvm) {
 753                 emit_label (acfg, name);
 754                 /* LLVM generated code references this */
 755                 sprintf (symbol, "%s%s%s", acfg->user_symbol_prefix, acfg->global_prefix, name);
 756                 emit_label (acfg, symbol);
 757                 emit_global_inner (acfg, symbol, FALSE);
 758         } else {
 759                 emit_label (acfg, name);
 760         }
 761 }
 762
 763 static void
 764 emit_string_symbol (MonoAotCompile *acfg, const char *name, const char *value)
 765 {
 766         if (acfg->llvm) {
 767                 mono_llvm_emit_aot_data (name, (guint8*)value, strlen (value) + 1);
 768                 return;
 769         }
 770
 771         mono_img_writer_emit_section_change (acfg->w, RODATA_SECT, 1);
 772 #ifdef TARGET_MACH
 773         /* On apple, all symbols need to be aligned to avoid warnings from ld */
 774         emit_alignment (acfg, 4);
 775 #endif
 776         mono_img_writer_emit_label (acfg->w, name);
 777         mono_img_writer_emit_string (acfg->w, value);
 778 }
 779
 780 static G_GNUC_UNUSED void
 781 emit_uleb128 (MonoAotCompile *acfg, guint32 value)
 782 {
 783         do {
 784                 guint8 b = value & 0x7f;
 785                 value >>= 7;
 786                 if (value != 0) /* more bytes to come */
 787                         b |= 0x80;
 788                 emit_byte (acfg, b);
 789         } while (value);
 790 }
 791
 792 static G_GNUC_UNUSED void
 793 emit_sleb128 (MonoAotCompile *acfg, gint64 value)
 794 {
 795         gboolean more = 1;
 796         gboolean negative = (value < 0);
 797         guint32 size = 64;
 798         guint8 byte;
 799
 800         while (more) {
 801                 byte = value & 0x7f;
 802                 value >>= 7;
 803                 /* the following is unnecessary if the
 804                  * implementation of >>= uses an arithmetic rather
 805                  * than logical shift for a signed left operand
 806                  */
 807                 if (negative)
 808                         /* sign extend */
 809                         value |= - ((gint64)1 <<(size - 7));
 810                 /* sign bit of byte is second high order bit (0x40) */
 811                 if ((value == 0 && !(byte & 0x40)) ||
 812                         (value == -1 && (byte & 0x40)))
 813                         more = 0;
 814                 else
 815                         byte |= 0x80;
 816                 emit_byte (acfg, byte);
 817         }
 818 }
 819
 820 static G_GNUC_UNUSED void
 821 encode_uleb128 (guint32 value, guint8 *buf, guint8 **endbuf)
 822 {
 823         guint8 *p = buf;
 824
 825         do {
 826                 guint8 b = value & 0x7f;
 827                 value >>= 7;
 828                 if (value != 0) /* more bytes to come */
 829                         b |= 0x80;
 830                 *p ++ = b;
 831         } while (value);
 832
 833         *endbuf = p;
 834 }
 835
 836 static G_GNUC_UNUSED void
 837 encode_sleb128 (gint32 value, guint8 *buf, guint8 **endbuf)
 838 {
 839         gboolean more = 1;
 840         gboolean negative = (value < 0);
 841         guint32 size = 32;
 842         guint8 byte;
 843         guint8 *p = buf;
 844
 845         while (more) {
 846                 byte = value & 0x7f;
 847                 value >>= 7;
 848                 /* the following is unnecessary if the
 849                  * implementation of >>= uses an arithmetic rather
 850                  * than logical shift for a signed left operand
 851                  */
 852                 if (negative)
 853                         /* sign extend */
 854                         value |= - (1 <<(size - 7));
 855                 /* sign bit of byte is second high order bit (0x40) */
 856                 if ((value == 0 && !(byte & 0x40)) ||
 857                         (value == -1 && (byte & 0x40)))
 858                         more = 0;
 859                 else
 860                         byte |= 0x80;
 861                 *p ++= byte;
 862         }
 863
 864         *endbuf = p;
 865 }
 866
 867 static void
 868 encode_int (gint32 val, guint8 *buf, guint8 **endbuf)
 869 {
 870         // FIXME: Big-endian
 871         buf [0] = (val >> 0) & 0xff;
 872         buf [1] = (val >> 8) & 0xff;
 873         buf [2] = (val >> 16) & 0xff;
 874         buf [3] = (val >> 24) & 0xff;
 875
 876         *endbuf = buf + 4;
 877 }
 878
 879 static void
 880 encode_int16 (guint16 val, guint8 *buf, guint8 **endbuf)
 881 {
 882         buf [0] = (val >> 0) & 0xff;
 883         buf [1] = (val >> 8) & 0xff;
 884
 885         *endbuf = buf + 2;
 886 }
 887
 888 static void
 889 encode_string (const char *s, guint8 *buf, guint8 **endbuf)
 890 {
 891         int len = strlen (s);
 892
 893         memcpy (buf, s, len + 1);
 894         *endbuf = buf + len + 1;
 895 }
 896
 897 static void
 898 emit_unset_mode (MonoAotCompile *acfg)
 899 {
 900         mono_img_writer_emit_unset_mode (acfg->w);
 901 }
 902
 903 static G_GNUC_UNUSED void
 904 emit_set_thumb_mode (MonoAotCompile *acfg)
 905 {
 906         emit_unset_mode (acfg);
 907         fprintf (acfg->fp, ".code 16\n");
 908 }
 909
 910 static G_GNUC_UNUSED void
 911 emit_set_arm_mode (MonoAotCompile *acfg)
 912 {
 913         emit_unset_mode (acfg);
 914         fprintf (acfg->fp, ".code 32\n");
 915 }
 916
 917 static inline void
 918 emit_code_bytes (MonoAotCompile *acfg, const guint8* buf, int size)
 919 {
 920 #ifdef TARGET_ARM64
 921         int i;
 922
 923         g_assert (size % 4 == 0);
 924         emit_unset_mode (acfg);
 925         for (i = 0; i < size; i += 4)
 926                 fprintf (acfg->fp, "%s 0x%x\n", acfg->inst_directive, *(guint32*)(buf + i));
 927 #else
 928         emit_bytes (acfg, buf, size);
 929 #endif
 930 }
 931
 932 /* ARCHITECTURE SPECIFIC CODE */
 933
 934 #if defined(TARGET_X86) || defined(TARGET_AMD64) || defined(TARGET_ARM) || defined(TARGET_POWERPC) || defined(TARGET_ARM64)
 935 #define EMIT_DWARF_INFO 1
 936 #endif
 937
 938 #ifdef TARGET_WIN32_MSVC
 939 #undef EMIT_DWARF_INFO
 940 #define EMIT_WIN32_CODEVIEW_INFO
 941 #endif
 942
 943 #ifdef EMIT_WIN32_UNWIND_INFO
 944 static UnwindInfoSectionCacheItem *
 945 get_cached_unwind_info_section_item_win32 (MonoAotCompile *acfg, const char *function_start, const char *function_end, GSList *unwind_ops);
 946
 947 static void
 948 free_unwind_info_section_cache_win32 (MonoAotCompile *acfg);
 949
 950 static void
 951 emit_unwind_info_data_win32 (MonoAotCompile *acfg, PUNWIND_INFO unwind_info);
 952
 953 static void
 954 emit_unwind_info_sections_win32 (MonoAotCompile *acfg, const char *function_start, const char *function_end, GSList *unwind_ops);
 955 #endif
 956
 957 static void
 958 arch_free_unwind_info_section_cache (MonoAotCompile *acfg)
 959 {
 960 #ifdef EMIT_WIN32_UNWIND_INFO
 961         free_unwind_info_section_cache_win32 (acfg);
 962 #endif
 963 }
 964
 965 static void
 966 arch_emit_unwind_info_sections (MonoAotCompile *acfg, const char *function_start, const char *function_end, GSList *unwind_ops)
 967 {
 968 #ifdef EMIT_WIN32_UNWIND_INFO
 969         gboolean own_unwind_ops = FALSE;
 970         if (!unwind_ops) {
 971                 unwind_ops = mono_unwind_get_cie_program ();
 972                 own_unwind_ops = TRUE;
 973         }
 974
 975         emit_unwind_info_sections_win32 (acfg, function_start, function_end, unwind_ops);
 976
 977         if (own_unwind_ops)
 978                 mono_free_unwind_info (unwind_ops);
 979 #endif
 980 }
 981
 982 #if defined(TARGET_ARM)
 983 #define AOT_FUNC_ALIGNMENT 4
 984 #else
 985 #define AOT_FUNC_ALIGNMENT 16
 986 #endif
 987
 988 #if defined(TARGET_POWERPC64) && !defined(__mono_ilp32__)
 989 #define PPC_LD_OP "ld"
 990 #define PPC_LDX_OP "ldx"
 991 #else
 992 #define PPC_LD_OP "lwz"
 993 #define PPC_LDX_OP "lwzx"
 994 #endif
 995
 996 #ifdef TARGET_X86_64_WIN32_MSVC
 997 #define AOT_TARGET_STR "AMD64 (WIN32) (MSVC codegen)"
 998 #elif TARGET_AMD64
 999 #define AOT_TARGET_STR "AMD64"
1000 #endif
1001
1002 #ifdef TARGET_ARM
1003 #ifdef TARGET_MACH
1004 #define AOT_TARGET_STR "ARM (MACH)"
1005 #else
1006 #define AOT_TARGET_STR "ARM (!MACH)"
1007 #endif
1008 #endif
1009
1010 #ifdef TARGET_ARM64
1011 #ifdef TARGET_MACH
1012 #define AOT_TARGET_STR "ARM64 (MACH)"
1013 #else
1014 #define AOT_TARGET_STR "ARM64 (!MACH)"
1015 #endif
1016 #endif
1017
1018 #ifdef TARGET_POWERPC64
1019 #ifdef __mono_ilp32__
1020 #define AOT_TARGET_STR "POWERPC64 (mono ilp32)"
1021 #else
1022 #define AOT_TARGET_STR "POWERPC64 (!mono ilp32)"
1023 #endif
1024 #else
1025 #ifdef TARGET_POWERPC
1026 #ifdef __mono_ilp32__
1027 #define AOT_TARGET_STR "POWERPC (mono ilp32)"
1028 #else
1029 #define AOT_TARGET_STR "POWERPC (!mono ilp32)"
1030 #endif
1031 #endif
1032 #endif
1033
1034 #ifdef TARGET_X86
1035 #ifdef TARGET_WIN32
1036 #define AOT_TARGET_STR "X86 (WIN32)"
1037 #else
1038 #define AOT_TARGET_STR "X86"
1039 #endif
1040 #endif
1041
1042 #ifndef AOT_TARGET_STR
1043 #define AOT_TARGET_STR ""
1044 #endif
1045
1046 static void
1047 arch_init (MonoAotCompile *acfg)
1048 {
1049         acfg->llc_args = g_string_new ("");
1050         acfg->as_args = g_string_new ("");
1051         acfg->llvm_owriter_supported = TRUE;
1052
1053         /*
1054          * The prefix LLVM likes to put in front of symbol names on darwin.
1055          * The mach-os specs require this for globals, but LLVM puts them in front of all
1056          * symbols. We need to handle this, since we need to refer to LLVM generated
1057          * symbols.
1058          */
1059         acfg->llvm_label_prefix = "";
1060         acfg->user_symbol_prefix = "";
1061
1062 #if defined(TARGET_X86)
1063         g_string_append (acfg->llc_args, " -march=x86 -mattr=sse4.1");
1064 #endif
1065
1066 #if defined(TARGET_AMD64)
1067         g_string_append (acfg->llc_args, " -march=x86-64 -mattr=sse4.1");
1068         /* NOP */
1069         acfg->align_pad_value = 0x90;
1070 #endif
1071
1072 #ifdef TARGET_ARM
1073         if (acfg->aot_opts.mtriple && strstr (acfg->aot_opts.mtriple, "darwin")) {
1074                 g_string_append (acfg->llc_args, "-mattr=+v6");
1075         } else {
1076 #if defined(ARM_FPU_VFP_HARD)
1077                 g_string_append (acfg->llc_args, " -mattr=+vfp2,-neon,+d16 -float-abi=hard");
1078                 g_string_append (acfg->as_args, " -mfpu=vfp3");
1079 #elif defined(ARM_FPU_VFP)
1080                 g_string_append (acfg->llc_args, " -mattr=+vfp2,-neon,+d16");
1081                 g_string_append (acfg->as_args, " -mfpu=vfp3");
1082 #else
1083                 g_string_append (acfg->llc_args, " -soft-float");
1084 #endif
1085         }
1086         if (acfg->aot_opts.mtriple && strstr (acfg->aot_opts.mtriple, "thumb"))
1087                 acfg->thumb_mixed = TRUE;
1088
1089         if (acfg->aot_opts.mtriple)
1090                 mono_arch_set_target (acfg->aot_opts.mtriple);
1091 #endif
1092
1093 #ifdef TARGET_ARM64
1094         acfg->inst_directive = ".inst";
1095         if (acfg->aot_opts.mtriple)
1096                 mono_arch_set_target (acfg->aot_opts.mtriple);
1097 #endif
1098
1099 #ifdef TARGET_MACH
1100         acfg->user_symbol_prefix = "_";
1101         acfg->llvm_label_prefix = "_";
1102         acfg->inst_directive = ".word";
1103         acfg->need_no_dead_strip = TRUE;
1104         acfg->aot_opts.gnu_asm = TRUE;
1105 #endif
1106
1107 #if defined(__linux__) && !defined(TARGET_ARM)
1108         acfg->need_pt_gnu_stack = TRUE;
1109 #endif
1110
1111 #ifdef MONOTOUCH
1112         acfg->global_symbols = TRUE;
1113 #endif
1114
1115 #ifdef TARGET_ANDROID
1116         acfg->llvm_owriter_supported = FALSE;
1117 #endif
1118 }
1119
1120 #ifdef TARGET_ARM64
1121
1122
1123 /* Load the contents of GOT_SLOT into dreg, clobbering ip0 */
1124 static void
1125 arm64_emit_load_got_slot (MonoAotCompile *acfg, int dreg, int got_slot)
1126 {
1127         int offset;
1128
1129         g_assert (acfg->fp);
1130         emit_unset_mode (acfg);
1131         /* r16==ip0 */
1132         offset = (int)(got_slot * sizeof (gpointer));
1133 #ifdef TARGET_MACH
1134         /* clang's integrated assembler */
1135         fprintf (acfg->fp, "adrp x16, %s@PAGE+%d\n", acfg->got_symbol, offset & 0xfffff000);
1136         fprintf (acfg->fp, "add x16, x16, %s@PAGEOFF\n", acfg->got_symbol);
1137         fprintf (acfg->fp, "ldr x%d, [x16, #%d]\n", dreg, offset & 0xfff);
1138 #else
1139         /* Linux GAS */
1140         fprintf (acfg->fp, "adrp x16, %s+%d\n", acfg->got_symbol, offset & 0xfffff000);
1141         fprintf (acfg->fp, "add x16, x16, :lo12:%s\n", acfg->got_symbol);
1142         fprintf (acfg->fp, "ldr x%d, [x16, %d]\n", dreg, offset & 0xfff);
1143 #endif
1144 }
1145
1146 static void
1147 arm64_emit_objc_selector_ref (MonoAotCompile *acfg, guint8 *code, int index, int *code_size)
1148 {
1149         int reg;
1150
1151         g_assert (acfg->fp);
1152         emit_unset_mode (acfg);
1153
1154         /* ldr rt, target */
1155         reg = arm_get_ldr_lit_reg (code);
1156
1157         fprintf (acfg->fp, "adrp x%d, L_OBJC_SELECTOR_REFERENCES_%d@PAGE\n", reg, index);
1158         fprintf (acfg->fp, "add x%d, x%d, L_OBJC_SELECTOR_REFERENCES_%d@PAGEOFF\n", reg, reg, index);
1159         fprintf (acfg->fp, "ldr x%d, [x%d]\n", reg, reg);
1160
1161         *code_size = 12;
1162 }
1163
1164 static void
1165 arm64_emit_direct_call (MonoAotCompile *acfg, const char *target, gboolean external, gboolean thumb, MonoJumpInfo *ji, int *call_size)
1166 {
1167         g_assert (acfg->fp);
1168         emit_unset_mode (acfg);
1169         if (ji && ji->relocation == MONO_R_ARM64_B) {
1170                 fprintf (acfg->fp, "b %s\n", target);
1171         } else {
1172                 if (ji)
1173                         g_assert (ji->relocation == MONO_R_ARM64_BL);
1174                 fprintf (acfg->fp, "bl %s\n", target);
1175         }
1176         *call_size = 4;
1177 }
1178
1179 static void
1180 arm64_emit_got_access (MonoAotCompile *acfg, guint8 *code, int got_slot, int *code_size)
1181 {
1182         int reg;
1183
1184         /* ldr rt, target */
1185         reg = arm_get_ldr_lit_reg (code);
1186         arm64_emit_load_got_slot (acfg, reg, got_slot);
1187         *code_size = 12;
1188 }
1189
1190 static void
1191 arm64_emit_plt_entry (MonoAotCompile *acfg, const char *got_symbol, int offset, int info_offset)
1192 {
1193         arm64_emit_load_got_slot (acfg, ARMREG_R16, offset / sizeof (gpointer));
1194         fprintf (acfg->fp, "br x16\n");
1195         /* Used by mono_aot_get_plt_info_offset () */
1196         fprintf (acfg->fp, "%s %d\n", acfg->inst_directive, info_offset);
1197 }
1198
1199 static void
1200 arm64_emit_tramp_page_common_code (MonoAotCompile *acfg, int pagesize, int arg_reg, int *size)
1201 {
1202         guint8 buf [256];
1203         guint8 *code;
1204         int imm;
1205
1206         /* The common code */
1207         code = buf;
1208         imm = pagesize;
1209         /* The trampoline address is in IP0 */
1210         arm_movzx (code, ARMREG_IP1, imm & 0xffff, 0);
1211         arm_movkx (code, ARMREG_IP1, (imm >> 16) & 0xffff, 16);
1212         /* Compute the data slot address */
1213         arm_subx (code, ARMREG_IP0, ARMREG_IP0, ARMREG_IP1);
1214         /* Trampoline argument */
1215         arm_ldrx (code, arg_reg, ARMREG_IP0, 0);
1216         /* Address */
1217         arm_ldrx (code, ARMREG_IP0, ARMREG_IP0, 8);
1218         arm_brx (code, ARMREG_IP0);
1219
1220         /* Emit it */
1221         emit_code_bytes (acfg, buf, code - buf);
1222
1223         *size = code - buf;
1224 }
1225
1226 static void
1227 arm64_emit_tramp_page_specific_code (MonoAotCompile *acfg, int pagesize, int common_tramp_size, int specific_tramp_size)
1228 {
1229         guint8 buf [256];
1230         guint8 *code;
1231         int i, count;
1232
1233         count = (pagesize - common_tramp_size) / specific_tramp_size;
1234         for (i = 0; i < count; ++i) {
1235                 code = buf;
1236                 arm_adrx (code, ARMREG_IP0, code);
1237                 /* Branch to the generic code */
1238                 arm_b (code, code - 4 - (i * specific_tramp_size) - common_tramp_size);
1239                 /* This has to be 2 pointers long */
1240                 arm_nop (code);
1241                 arm_nop (code);
1242                 g_assert (code - buf == specific_tramp_size);
1243                 emit_code_bytes (acfg, buf, code - buf);
1244         }
1245 }
1246
1247 static void
1248 arm64_emit_specific_trampoline_pages (MonoAotCompile *acfg)
1249 {
1250         guint8 buf [128];
1251         guint8 *code;
1252         guint8 *labels [16];
1253         int common_tramp_size;
1254         int specific_tramp_size = 2 * 8;
1255         int imm, pagesize;
1256         char symbol [128];
1257
1258         if (!acfg->aot_opts.use_trampolines_page)
1259                 return;
1260
1261 #ifdef TARGET_MACH
1262         /* Have to match the target pagesize */
1263         pagesize = 16384;
1264 #else
1265         pagesize = mono_pagesize ();
1266 #endif
1267         acfg->tramp_page_size = pagesize;
1268
1269         /* The specific trampolines */
1270         sprintf (symbol, "%sspecific_trampolines_page", acfg->user_symbol_prefix);
1271         emit_alignment (acfg, pagesize);
1272         emit_global (acfg, symbol, TRUE);
1273         emit_label (acfg, symbol);
1274
1275         /* The common code */
1276         arm64_emit_tramp_page_common_code (acfg, pagesize, ARMREG_IP1, &common_tramp_size);
1277         acfg->tramp_page_code_offsets [MONO_AOT_TRAMP_SPECIFIC] = common_tramp_size;
1278
1279         arm64_emit_tramp_page_specific_code (acfg, pagesize, common_tramp_size, specific_tramp_size);
1280
1281         /* The rgctx trampolines */
1282         /* These are the same as the specific trampolines, but they load the argument into MONO_ARCH_RGCTX_REG */
1283         sprintf (symbol, "%srgctx_trampolines_page", acfg->user_symbol_prefix);
1284         emit_alignment (acfg, pagesize);
1285         emit_global (acfg, symbol, TRUE);
1286         emit_label (acfg, symbol);
1287
1288         /* The common code */
1289         arm64_emit_tramp_page_common_code (acfg, pagesize, MONO_ARCH_RGCTX_REG, &common_tramp_size);
1290         acfg->tramp_page_code_offsets [MONO_AOT_TRAMP_STATIC_RGCTX] = common_tramp_size;
1291
1292         arm64_emit_tramp_page_specific_code (acfg, pagesize, common_tramp_size, specific_tramp_size);
1293
1294         /* The gsharedvt arg trampolines */
1295         /* These are the same as the specific trampolines */
1296         sprintf (symbol, "%sgsharedvt_arg_trampolines_page", acfg->user_symbol_prefix);
1297         emit_alignment (acfg, pagesize);
1298         emit_global (acfg, symbol, TRUE);
1299         emit_label (acfg, symbol);
1300
1301         arm64_emit_tramp_page_common_code (acfg, pagesize, ARMREG_IP1, &common_tramp_size);
1302         acfg->tramp_page_code_offsets [MONO_AOT_TRAMP_GSHAREDVT_ARG] = common_tramp_size;
1303
1304         arm64_emit_tramp_page_specific_code (acfg, pagesize, common_tramp_size, specific_tramp_size);
1305
1306         /* The IMT trampolines */
1307         sprintf (symbol, "%simt_trampolines_page", acfg->user_symbol_prefix);
1308         emit_alignment (acfg, pagesize);
1309         emit_global (acfg, symbol, TRUE);
1310         emit_label (acfg, symbol);
1311
1312         code = buf;
1313         imm = pagesize;
1314         /* The trampoline address is in IP0 */
1315         arm_movzx (code, ARMREG_IP1, imm & 0xffff, 0);
1316         arm_movkx (code, ARMREG_IP1, (imm >> 16) & 0xffff, 16);
1317         /* Compute the data slot address */
1318         arm_subx (code, ARMREG_IP0, ARMREG_IP0, ARMREG_IP1);
1319         /* Trampoline argument */
1320         arm_ldrx (code, ARMREG_IP1, ARMREG_IP0, 0);
1321
1322         /* Same as arch_emit_imt_trampoline () */
1323         labels [0] = code;
1324         arm_ldrx (code, ARMREG_IP0, ARMREG_IP1, 0);
1325         arm_cmpx (code, ARMREG_IP0, MONO_ARCH_RGCTX_REG);
1326         labels [1] = code;
1327         arm_bcc (code, ARMCOND_EQ, 0);
1328
1329         /* End-of-loop check */
1330         labels [2] = code;
1331         arm_cbzx (code, ARMREG_IP0, 0);
1332
1333         /* Loop footer */
1334         arm_addx_imm (code, ARMREG_IP1, ARMREG_IP1, 2 * 8);
1335         arm_b (code, labels [0]);
1336
1337         /* Match */
1338         mono_arm_patch (labels [1], code, MONO_R_ARM64_BCC);
1339         /* Load vtable slot addr */
1340         arm_ldrx (code, ARMREG_IP0, ARMREG_IP1, 8);
1341         /* Load vtable slot */
1342         arm_ldrx (code, ARMREG_IP0, ARMREG_IP0, 0);
1343         arm_brx (code, ARMREG_IP0);
1344
1345         /* No match */
1346         mono_arm_patch (labels [2], code, MONO_R_ARM64_CBZ);
1347         /* Load fail addr */
1348         arm_ldrx (code, ARMREG_IP0, ARMREG_IP1, 8);
1349         arm_brx (code, ARMREG_IP0);
1350
1351         emit_code_bytes (acfg, buf, code - buf);
1352
1353         common_tramp_size = code - buf;
1354         acfg->tramp_page_code_offsets [MONO_AOT_TRAMP_IMT] = common_tramp_size;
1355
1356         arm64_emit_tramp_page_specific_code (acfg, pagesize, common_tramp_size, specific_tramp_size);
1357 }
1358
1359 static void
1360 arm64_emit_specific_trampoline (MonoAotCompile *acfg, int offset, int *tramp_size)
1361 {
1362         /* Load argument from second GOT slot */
1363         arm64_emit_load_got_slot (acfg, ARMREG_R17, offset + 1);
1364         /* Load generic trampoline address from first GOT slot */
1365         arm64_emit_load_got_slot (acfg, ARMREG_R16, offset);
1366         fprintf (acfg->fp, "br x16\n");
1367         *tramp_size = 7 * 4;
1368 }
1369
1370 static void
1371 arm64_emit_unbox_trampoline (MonoAotCompile *acfg, MonoCompile *cfg, MonoMethod *method, const char *call_target)
1372 {
1373         emit_unset_mode (acfg);
1374         fprintf (acfg->fp, "add x0, x0, %d\n", (int)(sizeof (MonoObject)));
1375         fprintf (acfg->fp, "b %s\n", call_target);
1376 }
1377
1378 static void
1379 arm64_emit_static_rgctx_trampoline (MonoAotCompile *acfg, int offset, int *tramp_size)
1380 {
1381         /* Similar to the specific trampolines, but use the rgctx reg instead of ip1 */
1382
1383         /* Load argument from first GOT slot */
1384         arm64_emit_load_got_slot (acfg, MONO_ARCH_RGCTX_REG, offset);
1385         /* Load generic trampoline address from second GOT slot */
1386         arm64_emit_load_got_slot (acfg, ARMREG_R16, offset + 1);
1387         fprintf (acfg->fp, "br x16\n");
1388         *tramp_size = 7 * 4;
1389 }
1390
1391 static void
1392 arm64_emit_imt_trampoline (MonoAotCompile *acfg, int offset, int *tramp_size)
1393 {
1394         guint8 buf [128];
1395         guint8 *code, *labels [16];
1396
1397         /* Load parameter from GOT slot into ip1 */
1398         arm64_emit_load_got_slot (acfg, ARMREG_R17, offset);
1399
1400         code = buf;
1401         labels [0] = code;
1402         arm_ldrx (code, ARMREG_IP0, ARMREG_IP1, 0);
1403         arm_cmpx (code, ARMREG_IP0, MONO_ARCH_RGCTX_REG);
1404         labels [1] = code;
1405         arm_bcc (code, ARMCOND_EQ, 0);
1406
1407         /* End-of-loop check */
1408         labels [2] = code;
1409         arm_cbzx (code, ARMREG_IP0, 0);
1410
1411         /* Loop footer */
1412         arm_addx_imm (code, ARMREG_IP1, ARMREG_IP1, 2 * 8);
1413         arm_b (code, labels [0]);
1414
1415         /* Match */
1416         mono_arm_patch (labels [1], code, MONO_R_ARM64_BCC);
1417         /* Load vtable slot addr */
1418         arm_ldrx (code, ARMREG_IP0, ARMREG_IP1, 8);
1419         /* Load vtable slot */
1420         arm_ldrx (code, ARMREG_IP0, ARMREG_IP0, 0);
1421         arm_brx (code, ARMREG_IP0);
1422
1423         /* No match */
1424         mono_arm_patch (labels [2], code, MONO_R_ARM64_CBZ);
1425         /* Load fail addr */
1426         arm_ldrx (code, ARMREG_IP0, ARMREG_IP1, 8);
1427         arm_brx (code, ARMREG_IP0);
1428
1429         emit_code_bytes (acfg, buf, code - buf);
1430
1431         *tramp_size = code - buf + (3 * 4);
1432 }
1433
1434 static void
1435 arm64_emit_gsharedvt_arg_trampoline (MonoAotCompile *acfg, int offset, int *tramp_size)
1436 {
1437         /* Similar to the specific trampolines, but the address is in the second slot */
1438         /* Load argument from first GOT slot */
1439         arm64_emit_load_got_slot (acfg, ARMREG_R17, offset);
1440         /* Load generic trampoline address from second GOT slot */
1441         arm64_emit_load_got_slot (acfg, ARMREG_R16, offset + 1);
1442         fprintf (acfg->fp, "br x16\n");
1443         *tramp_size = 7 * 4;
1444 }
1445
1446
1447 #endif
1448
1449 #ifdef MONO_ARCH_AOT_SUPPORTED
1450 /*
1451  * arch_emit_direct_call:
1452  *
1453  *   Emit a direct call to the symbol TARGET. CALL_SIZE is set to the size of the
1454  * calling code.
1455  */
1456 static void
1457 arch_emit_direct_call (MonoAotCompile *acfg, const char *target, gboolean external, gboolean thumb, MonoJumpInfo *ji, int *call_size)
1458 {
1459 #if defined(TARGET_X86) || defined(TARGET_AMD64)
1460         /* Need to make sure this is exactly 5 bytes long */
1461         emit_unset_mode (acfg);
1462         fprintf (acfg->fp, "call %s\n", target);
1463         *call_size = 5;
1464 #elif defined(TARGET_ARM)
1465         emit_unset_mode (acfg);
1466         if (thumb)
1467                 fprintf (acfg->fp, "blx %s\n", target);
1468         else
1469                 fprintf (acfg->fp, "bl %s\n", target);
1470         *call_size = 4;
1471 #elif defined(TARGET_ARM64)
1472         arm64_emit_direct_call (acfg, target, external, thumb, ji, call_size);
1473 #elif defined(TARGET_POWERPC)
1474         emit_unset_mode (acfg);
1475         fprintf (acfg->fp, "bl %s\n", target);
1476         *call_size = 4;
1477 #else
1478         g_assert_not_reached ();
1479 #endif
1480 }
1481 #endif
1482
1483 /*
1484  * PPC32 design:
1485  * - we use an approach similar to the x86 abi: reserve a register (r30) to hold
1486  *   the GOT pointer.
1487  * - The full-aot trampolines need access to the GOT of mscorlib, so we store
1488  *   in in the 2. slot of every GOT, and require every method to place the GOT
1489  *   address in r30, even when it doesn't access the GOT otherwise. This way,
1490  *   the trampolines can compute the mscorlib GOT address by loading 4(r30).
1491  */
1492
1493 /*
1494  * PPC64 design:
1495  * PPC64 uses function descriptors which greatly complicate all code, since
1496  * these are used very inconsistently in the runtime. Some functions like
1497  * mono_compile_method () return ftn descriptors, while others like the
1498  * trampoline creation functions do not.
1499  * We assume that all GOT slots contain function descriptors, and create
1500  * descriptors in aot-runtime.c when needed.
1501  * The ppc64 abi uses r2 to hold the address of the TOC/GOT, which is loaded
1502  * from function descriptors, we could do the same, but it would require
1503  * rewriting all the ppc/aot code to handle function descriptors properly.
1504  * So instead, we use the same approach as on PPC32.
1505  * This is a horrible mess, but fixing it would probably lead to an even bigger
1506  * one.
1507  */
1508
1509 /*
1510  * X86 design:
1511  * - similar to the PPC32 design, we reserve EBX to hold the GOT pointer.
1512  */
1513
1514 #ifdef MONO_ARCH_AOT_SUPPORTED
1515 /*
1516  * arch_emit_got_offset:
1517  *
1518  *   The memory pointed to by CODE should hold native code for computing the GOT
1519  * address (OP_LOAD_GOTADDR). Emit this code while patching it with the offset
1520  * between code and the GOT. CODE_SIZE is set to the number of bytes emitted.
1521  */
1522 static void
1523 arch_emit_got_offset (MonoAotCompile *acfg, guint8 *code, int *code_size)
1524 {
1525 #if defined(TARGET_POWERPC64)
1526         emit_unset_mode (acfg);
1527         /*
1528          * The ppc32 code doesn't seem to work on ppc64, the assembler complains about
1529          * unsupported relocations. So we store the got address into the .Lgot_addr
1530          * symbol which is in the text segment, compute its address, and load it.
1531          */
1532         fprintf (acfg->fp, ".L%d:\n", acfg->label_generator);
1533         fprintf (acfg->fp, "lis 0, (.Lgot_addr + 4 - .L%d)@h\n", acfg->label_generator);
1534         fprintf (acfg->fp, "ori 0, 0, (.Lgot_addr + 4 - .L%d)@l\n", acfg->label_generator);
1535         fprintf (acfg->fp, "add 30, 30, 0\n");
1536         fprintf (acfg->fp, "%s 30, 0(30)\n", PPC_LD_OP);
1537         acfg->label_generator ++;
1538         *code_size = 16;
1539 #elif defined(TARGET_POWERPC)
1540         emit_unset_mode (acfg);
1541         fprintf (acfg->fp, ".L%d:\n", acfg->label_generator);
1542         fprintf (acfg->fp, "lis 0, (%s + 4 - .L%d)@h\n", acfg->got_symbol, acfg->label_generator);
1543         fprintf (acfg->fp, "ori 0, 0, (%s + 4 - .L%d)@l\n", acfg->got_symbol, acfg->label_generator);
1544         acfg->label_generator ++;
1545         *code_size = 8;
1546 #else
1547         guint32 offset = mono_arch_get_patch_offset (code);
1548         emit_bytes (acfg, code, offset);
1549         emit_symbol_diff (acfg, acfg->got_symbol, ".", offset);
1550
1551         *code_size = offset + 4;
1552 #endif
1553 }
1554
1555 /*
1556  * arch_emit_got_access:
1557  *
1558  *   The memory pointed to by CODE should hold native code for loading a GOT
1559  * slot (OP_AOTCONST/OP_GOT_ENTRY). Emit this code while patching it so it accesses the
1560  * GOT slot GOT_SLOT. CODE_SIZE is set to the number of bytes emitted.
1561  */
1562 static void
1563 arch_emit_got_access (MonoAotCompile *acfg, const char *got_symbol, guint8 *code, int got_slot, int *code_size)
1564 {
1565 #ifdef TARGET_AMD64
1566         /* mov reg, got+offset(%rip) */
1567         if (acfg->llvm) {
1568                 /* The GOT symbol is in the LLVM module, the clang assembler has problems emitting symbol diffs for it */
1569                 int dreg;
1570                 int rex_r;
1571
1572                 /* Decode reg, see amd64_mov_reg_membase () */
1573                 rex_r = code [0] & AMD64_REX_R;
1574                 g_assert (code [0] == 0x49 + rex_r);
1575                 g_assert (code [1] == 0x8b);
1576                 dreg = ((code [2] >> 3) & 0x7) + (rex_r ? 8 : 0);
1577
1578                 emit_unset_mode (acfg);
1579                 fprintf (acfg->fp, "mov %s+%d(%%rip), %s\n", got_symbol, (unsigned int) ((got_slot * sizeof (gpointer))), mono_arch_regname (dreg));
1580                 *code_size = 7;
1581         } else {
1582                 emit_bytes (acfg, code, mono_arch_get_patch_offset (code));
1583                 emit_symbol_diff (acfg, got_symbol, ".", (unsigned int) ((got_slot * sizeof (gpointer)) - 4));
1584                 *code_size = mono_arch_get_patch_offset (code) + 4;
1585         }
1586 #elif defined(TARGET_X86)
1587         emit_bytes (acfg, code, mono_arch_get_patch_offset (code));
1588         emit_int32 (acfg, (unsigned int) ((got_slot * sizeof (gpointer))));
1589         *code_size = mono_arch_get_patch_offset (code) + 4;
1590 #elif defined(TARGET_ARM)
1591         emit_bytes (acfg, code, mono_arch_get_patch_offset (code));
1592         emit_symbol_diff (acfg, got_symbol, ".", (unsigned int) ((got_slot * sizeof (gpointer))) - 12);
1593         *code_size = mono_arch_get_patch_offset (code) + 4;
1594 #elif defined(TARGET_ARM64)
1595         emit_bytes (acfg, code, mono_arch_get_patch_offset (code));
1596         arm64_emit_got_access (acfg, code, got_slot, code_size);
1597 #elif defined(TARGET_POWERPC)
1598         {
1599                 guint8 buf [32];
1600
1601                 emit_bytes (acfg, code, mono_arch_get_patch_offset (code));
1602                 code = buf;
1603                 ppc_load32 (code, ppc_r0, got_slot * sizeof (gpointer));
1604                 g_assert (code - buf == 8);
1605                 emit_bytes (acfg, buf, code - buf);
1606                 *code_size = code - buf;
1607         }
1608 #else
1609         g_assert_not_reached ();
1610 #endif
1611 }
1612
1613 #endif
1614
1615 #ifdef MONO_ARCH_AOT_SUPPORTED
1616 /*
1617  * arch_emit_objc_selector_ref:
1618  *
1619  *   Emit the implementation of OP_OBJC_GET_SELECTOR, which itself implements @selector(foo:) in objective-c.
1620  */
1621 static void
1622 arch_emit_objc_selector_ref (MonoAotCompile *acfg, guint8 *code, int index, int *code_size)
1623 {
1624 #if defined(TARGET_ARM)
1625         char symbol1 [MAX_SYMBOL_SIZE];
1626         char symbol2 [MAX_SYMBOL_SIZE];
1627         int lindex = acfg->objc_selector_index_2 ++;
1628
1629         /* Emit ldr.imm/b */
1630         emit_bytes (acfg, code, 8);
1631
1632         sprintf (symbol1, "L_OBJC_SELECTOR_%d", lindex);
1633         sprintf (symbol2, "L_OBJC_SELECTOR_REFERENCES_%d", index);
1634
1635         emit_label (acfg, symbol1);
1636         mono_img_writer_emit_unset_mode (acfg->w);
1637         fprintf (acfg->fp, ".long %s-(%s+12)", symbol2, symbol1);
1638
1639         *code_size = 12;
1640 #elif defined(TARGET_ARM64)
1641         arm64_emit_objc_selector_ref (acfg, code, index, code_size);
1642 #else
1643         g_assert_not_reached ();
1644 #endif
1645 }
1646 #endif
1647
1648 /*
1649  * arch_emit_plt_entry:
1650  *
1651  *   Emit code for the PLT entry.
1652  * The plt entry should look like this:
1653  * <indirect jump to GOT_SYMBOL + OFFSET>
1654  * <INFO_OFFSET embedded into the instruction stream>
1655  */
1656 static void
1657 arch_emit_plt_entry (MonoAotCompile *acfg, const char *got_symbol, int offset, int info_offset)
1658 {
1659 #if defined(TARGET_X86)
1660                 /* jmp *<offset>(%ebx) */
1661                 emit_byte (acfg, 0xff);
1662                 emit_byte (acfg, 0xa3);
1663                 emit_int32 (acfg, offset);
1664                 /* Used by mono_aot_get_plt_info_offset */
1665                 emit_int32 (acfg, info_offset);
1666 #elif defined(TARGET_AMD64)
1667                 emit_unset_mode (acfg);
1668                 fprintf (acfg->fp, "jmp *%s+%d(%%rip)\n", got_symbol, offset);
1669                 /* Used by mono_aot_get_plt_info_offset */
1670                 emit_int32 (acfg, info_offset);
1671                 acfg->stats.plt_size += 10;
1672 #elif defined(TARGET_ARM)
1673                 guint8 buf [256];
1674                 guint8 *code;
1675
1676                 code = buf;
1677                 ARM_LDR_IMM (code, ARMREG_IP, ARMREG_PC, 0);
1678                 ARM_LDR_REG_REG (code, ARMREG_PC, ARMREG_PC, ARMREG_IP);
1679                 emit_bytes (acfg, buf, code - buf);
1680                 emit_symbol_diff (acfg, got_symbol, ".", offset - 4);
1681                 /* Used by mono_aot_get_plt_info_offset */
1682                 emit_int32 (acfg, info_offset);
1683 #elif defined(TARGET_ARM64)
1684                 arm64_emit_plt_entry (acfg, got_symbol, offset, info_offset);
1685 #elif defined(TARGET_POWERPC)
1686                 /* The GOT address is guaranteed to be in r30 by OP_LOAD_GOTADDR */
1687                 emit_unset_mode (acfg);
1688                 fprintf (acfg->fp, "lis 11, %d@h\n", offset);
1689                 fprintf (acfg->fp, "ori 11, 11, %d@l\n", offset);
1690                 fprintf (acfg->fp, "add 11, 11, 30\n");
1691                 fprintf (acfg->fp, "%s 11, 0(11)\n", PPC_LD_OP);
1692 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
1693                 fprintf (acfg->fp, "%s 2, %d(11)\n", PPC_LD_OP, (int)sizeof (gpointer));
1694                 fprintf (acfg->fp, "%s 11, 0(11)\n", PPC_LD_OP);
1695 #endif
1696                 fprintf (acfg->fp, "mtctr 11\n");
1697                 fprintf (acfg->fp, "bctr\n");
1698                 emit_int32 (acfg, info_offset);
1699 #else
1700                 g_assert_not_reached ();
1701 #endif
1702 }
1703
1704 /*
1705  * arch_emit_llvm_plt_entry:
1706  *
1707  *   Same as arch_emit_plt_entry, but handles calls from LLVM generated code.
1708  * This is only needed on arm to handle thumb interop.
1709  */
1710 static void
1711 arch_emit_llvm_plt_entry (MonoAotCompile *acfg, const char *got_symbol, int offset, int info_offset)
1712 {
1713 #if defined(TARGET_ARM)
1714         /* LLVM calls the PLT entries using bl, so these have to be thumb2 */
1715         /* The caller already transitioned to thumb */
1716         /* The code below should be 12 bytes long */
1717         /* clang has trouble encoding these instructions, so emit the binary */
1718 #if 0
1719         fprintf (acfg->fp, "ldr ip, [pc, #8]\n");
1720         /* thumb can't encode ld pc, [pc, ip] */
1721         fprintf (acfg->fp, "add ip, pc, ip\n");
1722         fprintf (acfg->fp, "ldr ip, [ip, #0]\n");
1723         fprintf (acfg->fp, "bx ip\n");
1724 #endif
1725         emit_set_thumb_mode (acfg);
1726         fprintf (acfg->fp, ".4byte 0xc008f8df\n");
1727         fprintf (acfg->fp, ".2byte 0x44fc\n");
1728         fprintf (acfg->fp, ".4byte 0xc000f8dc\n");
1729         fprintf (acfg->fp, ".2byte 0x4760\n");
1730         emit_symbol_diff (acfg, got_symbol, ".", offset + 4);
1731         emit_int32 (acfg, info_offset);
1732         emit_unset_mode (acfg);
1733         emit_set_arm_mode (acfg);
1734 #else
1735         g_assert_not_reached ();
1736 #endif
1737 }
1738
1739 /* Save unwind_info in the module and emit the offset to the information at symbol */
1740 static void save_unwind_info (MonoAotCompile *acfg, char *symbol, GSList *unwind_ops)
1741 {
1742         guint32 uw_offset, encoded_len;
1743         guint8 *encoded;
1744
1745         emit_section_change (acfg, RODATA_SECT, 0);
1746         emit_global (acfg, symbol, FALSE);
1747         emit_label (acfg, symbol);
1748
1749         encoded = mono_unwind_ops_encode (unwind_ops, &encoded_len);
1750         uw_offset = get_unwind_info_offset (acfg, encoded, encoded_len);
1751         g_free (encoded);
1752         emit_int32 (acfg, uw_offset);
1753 }
1754
1755 /*
1756  * arch_emit_specific_trampoline_pages:
1757  *
1758  * Emits a page full of trampolines: each trampoline uses its own address to
1759  * lookup both the generic trampoline code and the data argument.
1760  * This page can be remapped in process multiple times so we can get an
1761  * unlimited number of trampolines.
1762  * Specifically this implementation uses the following trick: two memory pages
1763  * are allocated, with the first containing the data and the second containing the trampolines.
1764  * To reduce trampoline size, each trampoline jumps at the start of the page where a common
1765  * implementation does all the lifting.
1766  * Note that the ARM single trampoline size is 8 bytes, exactly like the data that needs to be stored
1767  * on the arm 32 bit system.
1768  */
1769 static void
1770 arch_emit_specific_trampoline_pages (MonoAotCompile *acfg)
1771 {
1772 #if defined(TARGET_ARM)
1773         guint8 buf [128];
1774         guint8 *code;
1775         guint8 *loop_start, *loop_branch_back, *loop_end_check, *imt_found_check;
1776         int i;
1777         int pagesize = MONO_AOT_TRAMP_PAGE_SIZE;
1778         GSList *unwind_ops = NULL;
1779 #define COMMON_TRAMP_SIZE 16
1780         int count = (pagesize - COMMON_TRAMP_SIZE) / 8;
1781         int imm8, rot_amount;
1782         char symbol [128];
1783
1784         if (!acfg->aot_opts.use_trampolines_page)
1785                 return;
1786
1787         acfg->tramp_page_size = pagesize;
1788
1789         sprintf (symbol, "%sspecific_trampolines_page", acfg->user_symbol_prefix);
1790         emit_alignment (acfg, pagesize);
1791         emit_global (acfg, symbol, TRUE);
1792         emit_label (acfg, symbol);
1793
1794         /* emit the generic code first, the trampoline address + 8 is in the lr register */
1795         code = buf;
1796         imm8 = mono_arm_is_rotated_imm8 (pagesize, &rot_amount);
1797         ARM_SUB_REG_IMM (code, ARMREG_LR, ARMREG_LR, imm8, rot_amount);
1798         ARM_LDR_IMM (code, ARMREG_R1, ARMREG_LR, -8);
1799         ARM_LDR_IMM (code, ARMREG_PC, ARMREG_LR, -4);
1800         ARM_NOP (code);
1801         g_assert (code - buf == COMMON_TRAMP_SIZE);
1802
1803         /* Emit it */
1804         emit_bytes (acfg, buf, code - buf);
1805
1806         for (i = 0; i < count; ++i) {
1807                 code = buf;
1808                 ARM_PUSH (code, 0x5fff);
1809                 ARM_BL (code, 0);
1810                 arm_patch (code - 4, code - COMMON_TRAMP_SIZE - 8 * (i + 1));
1811                 g_assert (code - buf == 8);
1812                 emit_bytes (acfg, buf, code - buf);
1813         }
1814
1815         /* now the rgctx trampolines: each specific trampolines puts in the ip register
1816          * the instruction pointer address, so the generic trampoline at the start of the page
1817          * subtracts 4096 to get to the data page and loads the values
1818          * We again fit the generic trampiline in 16 bytes.
1819          */
1820         sprintf (symbol, "%srgctx_trampolines_page", acfg->user_symbol_prefix);
1821         emit_global (acfg, symbol, TRUE);
1822         emit_label (acfg, symbol);
1823         code = buf;
1824         imm8 = mono_arm_is_rotated_imm8 (pagesize, &rot_amount);
1825         ARM_SUB_REG_IMM (code, ARMREG_IP, ARMREG_IP, imm8, rot_amount);
1826         ARM_LDR_IMM (code, MONO_ARCH_RGCTX_REG, ARMREG_IP, -8);
1827         ARM_LDR_IMM (code, ARMREG_PC, ARMREG_IP, -4);
1828         ARM_NOP (code);
1829         g_assert (code - buf == COMMON_TRAMP_SIZE);
1830
1831         /* Emit it */
1832         emit_bytes (acfg, buf, code - buf);
1833
1834         for (i = 0; i < count; ++i) {
1835                 code = buf;
1836                 ARM_MOV_REG_REG (code, ARMREG_IP, ARMREG_PC);
1837                 ARM_B (code, 0);
1838                 arm_patch (code - 4, code - COMMON_TRAMP_SIZE - 8 * (i + 1));
1839                 g_assert (code - buf == 8);
1840                 emit_bytes (acfg, buf, code - buf);
1841         }
1842
1843         /*
1844          * gsharedvt arg trampolines: see arch_emit_gsharedvt_arg_trampoline ()
1845          */
1846         sprintf (symbol, "%sgsharedvt_arg_trampolines_page", acfg->user_symbol_prefix);
1847         emit_global (acfg, symbol, TRUE);
1848         emit_label (acfg, symbol);
1849         code = buf;
1850         ARM_PUSH (code, (1 << ARMREG_R0) | (1 << ARMREG_R1) | (1 << ARMREG_R2) | (1 << ARMREG_R3));
1851         imm8 = mono_arm_is_rotated_imm8 (pagesize, &rot_amount);
1852         ARM_SUB_REG_IMM (code, ARMREG_IP, ARMREG_IP, imm8, rot_amount);
1853         ARM_LDR_IMM (code, ARMREG_R0, ARMREG_IP, -8);
1854         ARM_LDR_IMM (code, ARMREG_PC, ARMREG_IP, -4);
1855         g_assert (code - buf == COMMON_TRAMP_SIZE);
1856         /* Emit it */
1857         emit_bytes (acfg, buf, code - buf);
1858
1859         for (i = 0; i < count; ++i) {
1860                 code = buf;
1861                 ARM_MOV_REG_REG (code, ARMREG_IP, ARMREG_PC);
1862                 ARM_B (code, 0);
1863                 arm_patch (code - 4, code - COMMON_TRAMP_SIZE - 8 * (i + 1));
1864                 g_assert (code - buf == 8);
1865                 emit_bytes (acfg, buf, code - buf);
1866         }
1867
1868         /* now the imt trampolines: each specific trampolines puts in the ip register
1869          * the instruction pointer address, so the generic trampoline at the start of the page
1870          * subtracts 4096 to get to the data page and loads the values
1871          */
1872 #define IMT_TRAMP_SIZE 72
1873         sprintf (symbol, "%simt_trampolines_page", acfg->user_symbol_prefix);
1874         emit_global (acfg, symbol, TRUE);
1875         emit_label (acfg, symbol);
1876         code = buf;
1877         /* Need at least two free registers, plus a slot for storing the pc */
1878         ARM_PUSH (code, (1 << ARMREG_R0)|(1 << ARMREG_R1)|(1 << ARMREG_R2));
1879
1880         imm8 = mono_arm_is_rotated_imm8 (pagesize, &rot_amount);
1881         ARM_SUB_REG_IMM (code, ARMREG_IP, ARMREG_IP, imm8, rot_amount);
1882         ARM_LDR_IMM (code, ARMREG_R0, ARMREG_IP, -8);
1883
1884         /* The IMT method is in v5, r0 has the imt array address */
1885
1886         loop_start = code;
1887         ARM_LDR_IMM (code, ARMREG_R1, ARMREG_R0, 0);
1888         ARM_CMP_REG_REG (code, ARMREG_R1, ARMREG_V5);
1889         imt_found_check = code;
1890         ARM_B_COND (code, ARMCOND_EQ, 0);
1891
1892         /* End-of-loop check */
1893         ARM_CMP_REG_IMM (code, ARMREG_R1, 0, 0);
1894         loop_end_check = code;
1895         ARM_B_COND (code, ARMCOND_EQ, 0);
1896
1897         /* Loop footer */
1898         ARM_ADD_REG_IMM8 (code, ARMREG_R0, ARMREG_R0, sizeof (gpointer) * 2);
1899         loop_branch_back = code;
1900         ARM_B (code, 0);
1901         arm_patch (loop_branch_back, loop_start);
1902
1903         /* Match */
1904         arm_patch (imt_found_check, code);
1905         ARM_LDR_IMM (code, ARMREG_R0, ARMREG_R0, 4);
1906         ARM_LDR_IMM (code, ARMREG_R0, ARMREG_R0, 0);
1907         /* Save it to the third stack slot */
1908         ARM_STR_IMM (code, ARMREG_R0, ARMREG_SP, 8);
1909         /* Restore the registers and branch */
1910         ARM_POP (code, (1 << ARMREG_R0)|(1 << ARMREG_R1)|(1 << ARMREG_PC));
1911
1912         /* No match */
1913         arm_patch (loop_end_check, code);
1914         ARM_LDR_IMM (code, ARMREG_R0, ARMREG_R0, 4);
1915         ARM_STR_IMM (code, ARMREG_R0, ARMREG_SP, 8);
1916         ARM_POP (code, (1 << ARMREG_R0)|(1 << ARMREG_R1)|(1 << ARMREG_PC));
1917         ARM_NOP (code);
1918
1919         /* Emit it */
1920         g_assert (code - buf == IMT_TRAMP_SIZE);
1921         emit_bytes (acfg, buf, code - buf);
1922
1923         for (i = 0; i < count; ++i) {
1924                 code = buf;
1925                 ARM_MOV_REG_REG (code, ARMREG_IP, ARMREG_PC);
1926                 ARM_B (code, 0);
1927                 arm_patch (code - 4, code - IMT_TRAMP_SIZE - 8 * (i + 1));
1928                 g_assert (code - buf == 8);
1929                 emit_bytes (acfg, buf, code - buf);
1930         }
1931
1932         acfg->tramp_page_code_offsets [MONO_AOT_TRAMP_SPECIFIC] = 16;
1933         acfg->tramp_page_code_offsets [MONO_AOT_TRAMP_STATIC_RGCTX] = 16;
1934         acfg->tramp_page_code_offsets [MONO_AOT_TRAMP_IMT] = 72;
1935         acfg->tramp_page_code_offsets [MONO_AOT_TRAMP_GSHAREDVT_ARG] = 16;
1936
1937         /* Unwind info for specifc trampolines */
1938         sprintf (symbol, "%sspecific_trampolines_page_gen_p", acfg->user_symbol_prefix);
1939         /* We unwind to the original caller, from the stack, since lr is clobbered */
1940         mono_add_unwind_op_def_cfa (unwind_ops, 0, 0, ARMREG_SP, 14 * sizeof (mgreg_t));
1941         mono_add_unwind_op_offset (unwind_ops, 0, 0, ARMREG_LR, -4);
1942         save_unwind_info (acfg, symbol, unwind_ops);
1943         mono_free_unwind_info (unwind_ops);
1944
1945         sprintf (symbol, "%sspecific_trampolines_page_sp_p", acfg->user_symbol_prefix);
1946         mono_add_unwind_op_def_cfa (unwind_ops, 0, 0, ARMREG_SP, 0);
1947         mono_add_unwind_op_def_cfa_offset (unwind_ops, 4, 0, 14 * sizeof (mgreg_t));
1948         save_unwind_info (acfg, symbol, unwind_ops);
1949         mono_free_unwind_info (unwind_ops);
1950
1951         /* Unwind info for rgctx trampolines */
1952         sprintf (symbol, "%srgctx_trampolines_page_gen_p", acfg->user_symbol_prefix);
1953         mono_add_unwind_op_def_cfa (unwind_ops, 0, 0, ARMREG_SP, 0);
1954         save_unwind_info (acfg, symbol, unwind_ops);
1955
1956         sprintf (symbol, "%srgctx_trampolines_page_sp_p", acfg->user_symbol_prefix);
1957         save_unwind_info (acfg, symbol, unwind_ops);
1958         mono_free_unwind_info (unwind_ops);
1959
1960         /* Unwind info for gsharedvt trampolines */
1961         sprintf (symbol, "%sgsharedvt_trampolines_page_gen_p", acfg->user_symbol_prefix);
1962         mono_add_unwind_op_def_cfa (unwind_ops, 0, 0, ARMREG_SP, 0);
1963         mono_add_unwind_op_def_cfa_offset (unwind_ops, 4, 0, 4 * sizeof (mgreg_t));
1964         save_unwind_info (acfg, symbol, unwind_ops);
1965         mono_free_unwind_info (unwind_ops);
1966
1967         sprintf (symbol, "%sgsharedvt_trampolines_page_sp_p", acfg->user_symbol_prefix);
1968         mono_add_unwind_op_def_cfa (unwind_ops, 0, 0, ARMREG_SP, 0);
1969         save_unwind_info (acfg, symbol, unwind_ops);
1970         mono_free_unwind_info (unwind_ops);
1971
1972         /* Unwind info for imt trampolines */
1973         sprintf (symbol, "%simt_trampolines_page_gen_p", acfg->user_symbol_prefix);
1974         mono_add_unwind_op_def_cfa (unwind_ops, 0, 0, ARMREG_SP, 0);
1975         mono_add_unwind_op_def_cfa_offset (unwind_ops, 4, 0, 3 * sizeof (mgreg_t));
1976         save_unwind_info (acfg, symbol, unwind_ops);
1977         mono_free_unwind_info (unwind_ops);
1978
1979         sprintf (symbol, "%simt_trampolines_page_sp_p", acfg->user_symbol_prefix);
1980         mono_add_unwind_op_def_cfa (unwind_ops, 0, 0, ARMREG_SP, 0);
1981         save_unwind_info (acfg, symbol, unwind_ops);
1982         mono_free_unwind_info (unwind_ops);
1983 #elif defined(TARGET_ARM64)
1984         arm64_emit_specific_trampoline_pages (acfg);
1985 #endif
1986 }
1987
1988 /*
1989  * arch_emit_specific_trampoline:
1990  *
1991  *   Emit code for a specific trampoline. OFFSET is the offset of the first of
1992  * two GOT slots which contain the generic trampoline address and the trampoline
1993  * argument. TRAMP_SIZE is set to the size of the emitted trampoline.
1994  */
1995 static void
1996 arch_emit_specific_trampoline (MonoAotCompile *acfg, int offset, int *tramp_size)
1997 {
1998         /*
1999          * The trampolines created here are variations of the specific
2000          * trampolines created in mono_arch_create_specific_trampoline (). The
2001          * differences are:
2002          * - the generic trampoline address is taken from a got slot.
2003          * - the offset of the got slot where the trampoline argument is stored
2004          *   is embedded in the instruction stream, and the generic trampoline
2005          *   can load the argument by loading the offset, adding it to the
2006          *   address of the trampoline to get the address of the got slot, and
2007          *   loading the argument from there.
2008          * - all the trampolines should be of the same length.
2009          */
2010 #if defined(TARGET_AMD64)
2011         /* This should be exactly 8 bytes long */
2012         *tramp_size = 8;
2013         /* call *<offset>(%rip) */
2014         if (acfg->llvm) {
2015                 emit_unset_mode (acfg);
2016                 fprintf (acfg->fp, "call *%s+%d(%%rip)\n", acfg->got_symbol, (int)(offset * sizeof (gpointer)));
2017                 emit_zero_bytes (acfg, 2);
2018         } else {
2019                 emit_byte (acfg, '\x41');
2020                 emit_byte (acfg, '\xff');
2021                 emit_byte (acfg, '\x15');
2022                 emit_symbol_diff (acfg, acfg->got_symbol, ".", (offset * sizeof (gpointer)) - 4);
2023                 emit_zero_bytes (acfg, 1);
2024         }
2025 #elif defined(TARGET_ARM)
2026         guint8 buf [128];
2027         guint8 *code;
2028
2029         /* This should be exactly 20 bytes long */
2030         *tramp_size = 20;
2031         code = buf;
2032         ARM_PUSH (code, 0x5fff);
2033         ARM_LDR_IMM (code, ARMREG_R1, ARMREG_PC, 4);
2034         /* Load the value from the GOT */
2035         ARM_LDR_REG_REG (code, ARMREG_R1, ARMREG_PC, ARMREG_R1);
2036         /* Branch to it */
2037         ARM_BLX_REG (code, ARMREG_R1);
2038
2039         g_assert (code - buf == 16);
2040
2041         /* Emit it */
2042         emit_bytes (acfg, buf, code - buf);
2043         /*
2044          * Only one offset is needed, since the second one would be equal to the
2045          * first one.
2046          */
2047         emit_symbol_diff (acfg, acfg->got_symbol, ".", (offset * sizeof (gpointer)) - 4 + 4);
2048         //emit_symbol_diff (acfg, acfg->got_symbol, ".", ((offset + 1) * sizeof (gpointer)) - 4 + 8);
2049 #elif defined(TARGET_ARM64)
2050         arm64_emit_specific_trampoline (acfg, offset, tramp_size);
2051 #elif defined(TARGET_POWERPC)
2052         guint8 buf [128];
2053         guint8 *code;
2054
2055         *tramp_size = 4;
2056         code = buf;
2057
2058         /*
2059          * PPC has no ip relative addressing, so we need to compute the address
2060          * of the mscorlib got. That is slow and complex, so instead, we store it
2061          * in the second got slot of every aot image. The caller already computed
2062          * the address of its got and placed it into r30.
2063          */
2064         emit_unset_mode (acfg);
2065         /* Load mscorlib got address */
2066         fprintf (acfg->fp, "%s 0, %d(30)\n", PPC_LD_OP, (int)sizeof (gpointer));
2067         /* Load generic trampoline address */
2068         fprintf (acfg->fp, "lis 11, %d@h\n", (int)(offset * sizeof (gpointer)));
2069         fprintf (acfg->fp, "ori 11, 11, %d@l\n", (int)(offset * sizeof (gpointer)));
2070         fprintf (acfg->fp, "%s 11, 11, 0\n", PPC_LDX_OP);
2071 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
2072         fprintf (acfg->fp, "%s 11, 0(11)\n", PPC_LD_OP);
2073 #endif
2074         fprintf (acfg->fp, "mtctr 11\n");
2075         /* Load trampoline argument */
2076         /* On ppc, we pass it normally to the generic trampoline */
2077         fprintf (acfg->fp, "lis 11, %d@h\n", (int)((offset + 1) * sizeof (gpointer)));
2078         fprintf (acfg->fp, "ori 11, 11, %d@l\n", (int)((offset + 1) * sizeof (gpointer)));
2079         fprintf (acfg->fp, "%s 0, 11, 0\n", PPC_LDX_OP);
2080         /* Branch to generic trampoline */
2081         fprintf (acfg->fp, "bctr\n");
2082
2083 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
2084         *tramp_size = 10 * 4;
2085 #else
2086         *tramp_size = 9 * 4;
2087 #endif
2088 #elif defined(TARGET_X86)
2089         guint8 buf [128];
2090         guint8 *code;
2091
2092         /* Similar to the PPC code above */
2093
2094         /* FIXME: Could this clobber the register needed by get_vcall_slot () ? */
2095
2096         code = buf;
2097         /* Load mscorlib got address */
2098         x86_mov_reg_membase (code, X86_ECX, MONO_ARCH_GOT_REG, sizeof (gpointer), 4);
2099         /* Push trampoline argument */
2100         x86_push_membase (code, X86_ECX, (offset + 1) * sizeof (gpointer));
2101         /* Load generic trampoline address */
2102         x86_mov_reg_membase (code, X86_ECX, X86_ECX, offset * sizeof (gpointer), 4);
2103         /* Branch to generic trampoline */
2104         x86_jump_reg (code, X86_ECX);
2105
2106         emit_bytes (acfg, buf, code - buf);
2107
2108         *tramp_size = 17;
2109         g_assert (code - buf == *tramp_size);
2110 #else
2111         g_assert_not_reached ();
2112 #endif
2113 }
2114
2115 /*
2116  * arch_emit_unbox_trampoline:
2117  *
2118  *   Emit code for the unbox trampoline for METHOD used in the full-aot case.
2119  * CALL_TARGET is the symbol pointing to the native code of METHOD.
2120  */
2121 static void
2122 arch_emit_unbox_trampoline (MonoAotCompile *acfg, MonoCompile *cfg, MonoMethod *method, const char *call_target)
2123 {
2124 #if defined(TARGET_AMD64)
2125         guint8 buf [32];
2126         guint8 *code;
2127         int this_reg;
2128
2129         this_reg = mono_arch_get_this_arg_reg (NULL);
2130         code = buf;
2131         amd64_alu_reg_imm (code, X86_ADD, this_reg, sizeof (MonoObject));
2132
2133         emit_bytes (acfg, buf, code - buf);
2134         /* jump <method> */
2135         if (acfg->llvm) {
2136                 emit_unset_mode (acfg);
2137                 fprintf (acfg->fp, "jmp %s\n", call_target);
2138         } else {
2139                 emit_byte (acfg, '\xe9');
2140                 emit_symbol_diff (acfg, call_target, ".", -4);
2141         }
2142 #elif defined(TARGET_X86)
2143         guint8 buf [32];
2144         guint8 *code;
2145         int this_pos = 4;
2146
2147         code = buf;
2148
2149         x86_alu_membase_imm (code, X86_ADD, X86_ESP, this_pos, sizeof (MonoObject));
2150
2151         emit_bytes (acfg, buf, code - buf);
2152
2153         /* jump <method> */
2154         emit_byte (acfg, '\xe9');
2155         emit_symbol_diff (acfg, call_target, ".", -4);
2156 #elif defined(TARGET_ARM)
2157         guint8 buf [128];
2158         guint8 *code;
2159
2160         if (acfg->thumb_mixed && cfg->compile_llvm) {
2161                 fprintf (acfg->fp, "add r0, r0, #%d\n", (int)sizeof (MonoObject));
2162                 fprintf (acfg->fp, "b %s\n", call_target);
2163                 fprintf (acfg->fp, ".arm\n");
2164                 fprintf (acfg->fp, ".align 2\n");
2165                 return;
2166         }
2167
2168         code = buf;
2169
2170         ARM_ADD_REG_IMM8 (code, ARMREG_R0, ARMREG_R0, sizeof (MonoObject));
2171
2172         emit_bytes (acfg, buf, code - buf);
2173         /* jump to method */
2174         if (acfg->thumb_mixed && cfg->compile_llvm)
2175                 fprintf (acfg->fp, "\n\tbx %s\n", call_target);
2176         else
2177                 fprintf (acfg->fp, "\n\tb %s\n", call_target);
2178 #elif defined(TARGET_ARM64)
2179         arm64_emit_unbox_trampoline (acfg, cfg, method, call_target);
2180 #elif defined(TARGET_POWERPC)
2181         int this_pos = 3;
2182
2183         fprintf (acfg->fp, "\n\taddi %d, %d, %d\n", this_pos, this_pos, (int)sizeof (MonoObject));
2184         fprintf (acfg->fp, "\n\tb %s\n", call_target);
2185 #else
2186         g_assert_not_reached ();
2187 #endif
2188 }
2189
2190 /*
2191  * arch_emit_static_rgctx_trampoline:
2192  *
2193  *   Emit code for a static rgctx trampoline. OFFSET is the offset of the first of
2194  * two GOT slots which contain the rgctx argument, and the method to jump to.
2195  * TRAMP_SIZE is set to the size of the emitted trampoline.
2196  * These kinds of trampolines cannot be enumerated statically, since there could
2197  * be one trampoline per method instantiation, so we emit the same code for all
2198  * trampolines, and parameterize them using two GOT slots.
2199  */
2200 static void
2201 arch_emit_static_rgctx_trampoline (MonoAotCompile *acfg, int offset, int *tramp_size)
2202 {
2203 #if defined(TARGET_AMD64)
2204         /* This should be exactly 13 bytes long */
2205         *tramp_size = 13;
2206
2207         if (acfg->llvm) {
2208                 emit_unset_mode (acfg);
2209                 fprintf (acfg->fp, "mov %s+%d(%%rip), %%r10\n", acfg->got_symbol, (int)(offset * sizeof (gpointer)));
2210                 fprintf (acfg->fp, "jmp *%s+%d(%%rip)\n", acfg->got_symbol, (int)((offset + 1) * sizeof (gpointer)));
2211         } else {
2212                 /* mov <OFFSET>(%rip), %r10 */
2213                 emit_byte (acfg, '\x4d');
2214                 emit_byte (acfg, '\x8b');
2215                 emit_byte (acfg, '\x15');
2216                 emit_symbol_diff (acfg, acfg->got_symbol, ".", (offset * sizeof (gpointer)) - 4);
2217
2218                 /* jmp *<offset>(%rip) */
2219                 emit_byte (acfg, '\xff');
2220                 emit_byte (acfg, '\x25');
2221                 emit_symbol_diff (acfg, acfg->got_symbol, ".", ((offset + 1) * sizeof (gpointer)) - 4);
2222         }
2223 #elif defined(TARGET_ARM)
2224         guint8 buf [128];
2225         guint8 *code;
2226
2227         /* This should be exactly 24 bytes long */
2228         *tramp_size = 24;
2229         code = buf;
2230         /* Load rgctx value */
2231         ARM_LDR_IMM (code, ARMREG_IP, ARMREG_PC, 8);
2232         ARM_LDR_REG_REG (code, MONO_ARCH_RGCTX_REG, ARMREG_PC, ARMREG_IP);
2233         /* Load branch addr + branch */
2234         ARM_LDR_IMM (code, ARMREG_IP, ARMREG_PC, 4);
2235         ARM_LDR_REG_REG (code, ARMREG_PC, ARMREG_PC, ARMREG_IP);
2236
2237         g_assert (code - buf == 16);
2238
2239         /* Emit it */
2240         emit_bytes (acfg, buf, code - buf);
2241         emit_symbol_diff (acfg, acfg->got_symbol, ".", (offset * sizeof (gpointer)) - 4 + 8);
2242         emit_symbol_diff (acfg, acfg->got_symbol, ".", ((offset + 1) * sizeof (gpointer)) - 4 + 4);
2243 #elif defined(TARGET_ARM64)
2244         arm64_emit_static_rgctx_trampoline (acfg, offset, tramp_size);
2245 #elif defined(TARGET_POWERPC)
2246         guint8 buf [128];
2247         guint8 *code;
2248
2249         *tramp_size = 4;
2250         code = buf;
2251
2252         /*
2253          * PPC has no ip relative addressing, so we need to compute the address
2254          * of the mscorlib got. That is slow and complex, so instead, we store it
2255          * in the second got slot of every aot image. The caller already computed
2256          * the address of its got and placed it into r30.
2257          */
2258         emit_unset_mode (acfg);
2259         /* Load mscorlib got address */
2260         fprintf (acfg->fp, "%s 0, %d(30)\n", PPC_LD_OP, (int)sizeof (gpointer));
2261         /* Load rgctx */
2262         fprintf (acfg->fp, "lis 11, %d@h\n", (int)(offset * sizeof (gpointer)));
2263         fprintf (acfg->fp, "ori 11, 11, %d@l\n", (int)(offset * sizeof (gpointer)));
2264         fprintf (acfg->fp, "%s %d, 11, 0\n", PPC_LDX_OP, MONO_ARCH_RGCTX_REG);
2265         /* Load target address */
2266         fprintf (acfg->fp, "lis 11, %d@h\n", (int)((offset + 1) * sizeof (gpointer)));
2267         fprintf (acfg->fp, "ori 11, 11, %d@l\n", (int)((offset + 1) * sizeof (gpointer)));
2268         fprintf (acfg->fp, "%s 11, 11, 0\n", PPC_LDX_OP);
2269 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
2270         fprintf (acfg->fp, "%s 2, %d(11)\n", PPC_LD_OP, (int)sizeof (gpointer));
2271         fprintf (acfg->fp, "%s 11, 0(11)\n", PPC_LD_OP);
2272 #endif
2273         fprintf (acfg->fp, "mtctr 11\n");
2274         /* Branch to the target address */
2275         fprintf (acfg->fp, "bctr\n");
2276
2277 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
2278         *tramp_size = 11 * 4;
2279 #else
2280         *tramp_size = 9 * 4;
2281 #endif
2282
2283 #elif defined(TARGET_X86)
2284         guint8 buf [128];
2285         guint8 *code;
2286
2287         /* Similar to the PPC code above */
2288
2289         g_assert (MONO_ARCH_RGCTX_REG != X86_ECX);
2290
2291         code = buf;
2292         /* Load mscorlib got address */
2293         x86_mov_reg_membase (code, X86_ECX, MONO_ARCH_GOT_REG, sizeof (gpointer), 4);
2294         /* Load arg */
2295         x86_mov_reg_membase (code, MONO_ARCH_RGCTX_REG, X86_ECX, offset * sizeof (gpointer), 4);
2296         /* Branch to the target address */
2297         x86_jump_membase (code, X86_ECX, (offset + 1) * sizeof (gpointer));
2298
2299         emit_bytes (acfg, buf, code - buf);
2300
2301         *tramp_size = 15;
2302         g_assert (code - buf == *tramp_size);
2303 #else
2304         g_assert_not_reached ();
2305 #endif
2306 }
2307
2308 /*
2309  * arch_emit_imt_trampoline:
2310  *
2311  *   Emit an IMT trampoline usable in full-aot mode. The trampoline uses 1 got slot which
2312  * points to an array of pointer pairs. The pairs of the form [key, ptr], where
2313  * key is the IMT key, and ptr holds the address of a memory location holding
2314  * the address to branch to if the IMT arg matches the key. The array is
2315  * terminated by a pair whose key is NULL, and whose ptr is the address of the
2316  * fail_tramp.
2317  * TRAMP_SIZE is set to the size of the emitted trampoline.
2318  */
2319 static void
2320 arch_emit_imt_trampoline (MonoAotCompile *acfg, int offset, int *tramp_size)
2321 {
2322 #if defined(TARGET_AMD64)
2323         guint8 *buf, *code;
2324         guint8 *labels [16];
2325         guint8 mov_buf[3];
2326         guint8 *mov_buf_ptr = mov_buf;
2327
2328         const int kSizeOfMove = 7;
2329
2330         code = buf = (guint8 *)g_malloc (256);
2331
2332         /* FIXME: Optimize this, i.e. use binary search etc. */
2333         /* Maybe move the body into a separate function (slower, but much smaller) */
2334
2335         /* MONO_ARCH_IMT_SCRATCH_REG is a free register */
2336
2337         if (acfg->llvm) {
2338                 emit_unset_mode (acfg);
2339                 fprintf (acfg->fp, "mov %s+%d(%%rip), %s\n", acfg->got_symbol, (int)(offset * sizeof (gpointer)), mono_arch_regname (MONO_ARCH_IMT_SCRATCH_REG));
2340         }
2341
2342         labels [0] = code;
2343         amd64_alu_membase_imm (code, X86_CMP, MONO_ARCH_IMT_SCRATCH_REG, 0, 0);
2344         labels [1] = code;
2345         amd64_branch8 (code, X86_CC_Z, 0, FALSE);
2346
2347         /* Check key */
2348         amd64_alu_membase_reg_size (code, X86_CMP, MONO_ARCH_IMT_SCRATCH_REG, 0, MONO_ARCH_IMT_REG, sizeof (gpointer));
2349         labels [2] = code;
2350         amd64_branch8 (code, X86_CC_Z, 0, FALSE);
2351
2352         /* Loop footer */
2353         amd64_alu_reg_imm (code, X86_ADD, MONO_ARCH_IMT_SCRATCH_REG, 2 * sizeof (gpointer));
2354         amd64_jump_code (code, labels [0]);
2355
2356         /* Match */
2357         mono_amd64_patch (labels [2], code);
2358         amd64_mov_reg_membase (code, MONO_ARCH_IMT_SCRATCH_REG, MONO_ARCH_IMT_SCRATCH_REG, sizeof (gpointer), sizeof (gpointer));
2359         amd64_jump_membase (code, MONO_ARCH_IMT_SCRATCH_REG, 0);
2360
2361         /* No match */
2362         mono_amd64_patch (labels [1], code);
2363         /* Load fail tramp */
2364         amd64_alu_reg_imm (code, X86_ADD, MONO_ARCH_IMT_SCRATCH_REG, sizeof (gpointer));
2365         /* Check if there is a fail tramp */
2366         amd64_alu_membase_imm (code, X86_CMP, MONO_ARCH_IMT_SCRATCH_REG, 0, 0);
2367         labels [3] = code;
2368         amd64_branch8 (code, X86_CC_Z, 0, FALSE);
2369         /* Jump to fail tramp */
2370         amd64_jump_membase (code, MONO_ARCH_IMT_SCRATCH_REG, 0);
2371
2372         /* Fail */
2373         mono_amd64_patch (labels [3], code);
2374         x86_breakpoint (code);
2375
2376         if (!acfg->llvm) {
2377                 /* mov <OFFSET>(%rip), MONO_ARCH_IMT_SCRATCH_REG */
2378                 amd64_emit_rex (mov_buf_ptr, sizeof(gpointer), MONO_ARCH_IMT_SCRATCH_REG, 0, AMD64_RIP);
2379                 *(mov_buf_ptr)++ = (unsigned char)0x8b; /* mov opcode */
2380                 x86_address_byte (mov_buf_ptr, 0, MONO_ARCH_IMT_SCRATCH_REG & 0x7, 5);
2381                 emit_bytes (acfg, mov_buf, mov_buf_ptr - mov_buf);
2382                 emit_symbol_diff (acfg, acfg->got_symbol, ".", (offset * sizeof (gpointer)) - 4);
2383         }
2384         emit_bytes (acfg, buf, code - buf);
2385
2386         *tramp_size = code - buf + kSizeOfMove;
2387
2388         g_free (buf);
2389
2390 #elif defined(TARGET_X86)
2391         guint8 *buf, *code;
2392         guint8 *labels [16];
2393
2394         code = buf = g_malloc (256);
2395
2396         /* Allocate a temporary stack slot */
2397         x86_push_reg (code, X86_EAX);
2398         /* Save EAX */
2399         x86_push_reg (code, X86_EAX);
2400
2401         /* Load mscorlib got address */
2402         x86_mov_reg_membase (code, X86_EAX, MONO_ARCH_GOT_REG, sizeof (gpointer), 4);
2403         /* Load arg */
2404         x86_mov_reg_membase (code, X86_EAX, X86_EAX, offset * sizeof (gpointer), 4);
2405
2406         labels [0] = code;
2407         x86_alu_membase_imm (code, X86_CMP, X86_EAX, 0, 0);
2408         labels [1] = code;
2409         x86_branch8 (code, X86_CC_Z, FALSE, 0);
2410
2411         /* Check key */
2412         x86_alu_membase_reg (code, X86_CMP, X86_EAX, 0, MONO_ARCH_IMT_REG);
2413         labels [2] = code;
2414         x86_branch8 (code, X86_CC_Z, FALSE, 0);
2415
2416         /* Loop footer */
2417         x86_alu_reg_imm (code, X86_ADD, X86_EAX, 2 * sizeof (gpointer));
2418         x86_jump_code (code, labels [0]);
2419
2420         /* Match */
2421         mono_x86_patch (labels [2], code);
2422         x86_mov_reg_membase (code, X86_EAX, X86_EAX, sizeof (gpointer), 4);
2423         x86_mov_reg_membase (code, X86_EAX, X86_EAX, 0, 4);
2424         /* Save the target address to the temporary stack location */
2425         x86_mov_membase_reg (code, X86_ESP, 4, X86_EAX, 4);
2426         /* Restore EAX */
2427         x86_pop_reg (code, X86_EAX);
2428         /* Jump to the target address */
2429         x86_ret (code);
2430
2431         /* No match */
2432         mono_x86_patch (labels [1], code);
2433         /* Load fail tramp */
2434         x86_mov_reg_membase (code, X86_EAX, X86_EAX, sizeof (gpointer), 4);
2435         x86_alu_membase_imm (code, X86_CMP, X86_EAX, 0, 0);
2436         labels [3] = code;
2437         x86_branch8 (code, X86_CC_Z, FALSE, 0);
2438         /* Jump to fail tramp */
2439         x86_mov_membase_reg (code, X86_ESP, 4, X86_EAX, 4);
2440         x86_pop_reg (code, X86_EAX);
2441         x86_ret (code);
2442
2443         /* Fail */
2444         mono_x86_patch (labels [3], code);
2445         x86_breakpoint (code);
2446
2447         emit_bytes (acfg, buf, code - buf);
2448
2449         *tramp_size = code - buf;
2450
2451         g_free (buf);
2452
2453 #elif defined(TARGET_ARM)
2454         guint8 buf [128];
2455         guint8 *code, *code2, *labels [16];
2456
2457         code = buf;
2458
2459         /* The IMT method is in v5 */
2460
2461         /* Need at least two free registers, plus a slot for storing the pc */
2462         ARM_PUSH (code, (1 << ARMREG_R0)|(1 << ARMREG_R1)|(1 << ARMREG_R2));
2463         labels [0] = code;
2464         /* Load the parameter from the GOT */
2465         ARM_LDR_IMM (code, ARMREG_R0, ARMREG_PC, 0);
2466         ARM_LDR_REG_REG (code, ARMREG_R0, ARMREG_PC, ARMREG_R0);
2467
2468         labels [1] = code;
2469         ARM_LDR_IMM (code, ARMREG_R1, ARMREG_R0, 0);
2470         ARM_CMP_REG_REG (code, ARMREG_R1, ARMREG_V5);
2471         labels [2] = code;
2472         ARM_B_COND (code, ARMCOND_EQ, 0);
2473
2474         /* End-of-loop check */
2475         ARM_CMP_REG_IMM (code, ARMREG_R1, 0, 0);
2476         labels [3] = code;
2477         ARM_B_COND (code, ARMCOND_EQ, 0);
2478
2479         /* Loop footer */
2480         ARM_ADD_REG_IMM8 (code, ARMREG_R0, ARMREG_R0, sizeof (gpointer) * 2);
2481         labels [4] = code;
2482         ARM_B (code, 0);
2483         arm_patch (labels [4], labels [1]);
2484
2485         /* Match */
2486         arm_patch (labels [2], code);
2487         ARM_LDR_IMM (code, ARMREG_R0, ARMREG_R0, 4);
2488         ARM_LDR_IMM (code, ARMREG_R0, ARMREG_R0, 0);
2489         /* Save it to the third stack slot */
2490         ARM_STR_IMM (code, ARMREG_R0, ARMREG_SP, 8);
2491         /* Restore the registers and branch */
2492         ARM_POP (code, (1 << ARMREG_R0)|(1 << ARMREG_R1)|(1 << ARMREG_PC));
2493
2494         /* No match */
2495         arm_patch (labels [3], code);
2496         ARM_LDR_IMM (code, ARMREG_R0, ARMREG_R0, 4);
2497         ARM_STR_IMM (code, ARMREG_R0, ARMREG_SP, 8);
2498         ARM_POP (code, (1 << ARMREG_R0)|(1 << ARMREG_R1)|(1 << ARMREG_PC));
2499
2500         /* Fixup offset */
2501         code2 = labels [0];
2502         ARM_LDR_IMM (code2, ARMREG_R0, ARMREG_PC, (code - (labels [0] + 8)));
2503
2504         emit_bytes (acfg, buf, code - buf);
2505         emit_symbol_diff (acfg, acfg->got_symbol, ".", (offset * sizeof (gpointer)) + (code - (labels [0] + 8)) - 4);
2506
2507         *tramp_size = code - buf + 4;
2508 #elif defined(TARGET_ARM64)
2509         arm64_emit_imt_trampoline (acfg, offset, tramp_size);
2510 #elif defined(TARGET_POWERPC)
2511         guint8 buf [128];
2512         guint8 *code, *labels [16];
2513
2514         code = buf;
2515
2516         /* Load the mscorlib got address */
2517         ppc_ldptr (code, ppc_r12, sizeof (gpointer), ppc_r30);
2518         /* Load the parameter from the GOT */
2519         ppc_load (code, ppc_r0, offset * sizeof (gpointer));
2520         ppc_ldptr_indexed (code, ppc_r12, ppc_r12, ppc_r0);
2521
2522         /* Load and check key */
2523         labels [1] = code;
2524         ppc_ldptr (code, ppc_r0, 0, ppc_r12);
2525         ppc_cmp (code, 0, sizeof (gpointer) == 8 ? 1 : 0, ppc_r0, MONO_ARCH_IMT_REG);
2526         labels [2] = code;
2527         ppc_bc (code, PPC_BR_TRUE, PPC_BR_EQ, 0);
2528
2529         /* End-of-loop check */
2530         ppc_cmpi (code, 0, sizeof (gpointer) == 8 ? 1 : 0, ppc_r0, 0);
2531         labels [3] = code;
2532         ppc_bc (code, PPC_BR_TRUE, PPC_BR_EQ, 0);
2533
2534         /* Loop footer */
2535         ppc_addi (code, ppc_r12, ppc_r12, 2 * sizeof (gpointer));
2536         labels [4] = code;
2537         ppc_b (code, 0);
2538         mono_ppc_patch (labels [4], labels [1]);
2539
2540         /* Match */
2541         mono_ppc_patch (labels [2], code);
2542         ppc_ldptr (code, ppc_r12, sizeof (gpointer), ppc_r12);
2543         /* r12 now contains the value of the vtable slot */
2544         /* this is not a function descriptor on ppc64 */
2545         ppc_ldptr (code, ppc_r12, 0, ppc_r12);
2546         ppc_mtctr (code, ppc_r12);
2547         ppc_bcctr (code, PPC_BR_ALWAYS, 0);
2548
2549         /* Fail */
2550         mono_ppc_patch (labels [3], code);
2551         /* FIXME: */
2552         ppc_break (code);
2553
2554         *tramp_size = code - buf;
2555
2556         emit_bytes (acfg, buf, code - buf);
2557 #else
2558         g_assert_not_reached ();
2559 #endif
2560 }
2561
2562
2563 #if defined (TARGET_AMD64)
2564
2565 static void
2566 amd64_emit_load_got_slot (MonoAotCompile *acfg, int dreg, int got_slot)
2567 {
2568
2569         g_assert (acfg->fp);
2570         emit_unset_mode (acfg);
2571
2572         fprintf (acfg->fp, "mov %s+%d(%%rip), %s\n", acfg->got_symbol, (unsigned int) ((got_slot * sizeof (gpointer))), mono_arch_regname (dreg));
2573 }
2574
2575 #endif
2576
2577
2578 /*
2579  * arch_emit_gsharedvt_arg_trampoline:
2580  *
2581  *   Emit code for a gsharedvt arg trampoline. OFFSET is the offset of the first of
2582  * two GOT slots which contain the argument, and the code to jump to.
2583  * TRAMP_SIZE is set to the size of the emitted trampoline.
2584  * These kinds of trampolines cannot be enumerated statically, since there could
2585  * be one trampoline per method instantiation, so we emit the same code for all
2586  * trampolines, and parameterize them using two GOT slots.
2587  */
2588 static void
2589 arch_emit_gsharedvt_arg_trampoline (MonoAotCompile *acfg, int offset, int *tramp_size)
2590 {
2591 #if defined(TARGET_X86)
2592         guint8 buf [128];
2593         guint8 *code;
2594
2595         /* Similar to the PPC code above */
2596
2597         g_assert (MONO_ARCH_RGCTX_REG != X86_ECX);
2598
2599         code = buf;
2600         /* Load mscorlib got address */
2601         x86_mov_reg_membase (code, X86_ECX, MONO_ARCH_GOT_REG, sizeof (gpointer), 4);
2602         /* Load arg */
2603         x86_mov_reg_membase (code, X86_EAX, X86_ECX, offset * sizeof (gpointer), 4);
2604         /* Branch to the target address */
2605         x86_jump_membase (code, X86_ECX, (offset + 1) * sizeof (gpointer));
2606
2607         emit_bytes (acfg, buf, code - buf);
2608
2609         *tramp_size = 15;
2610         g_assert (code - buf == *tramp_size);
2611 #elif defined(TARGET_ARM)
2612         guint8 buf [128];
2613         guint8 *code;
2614
2615         /* The same as mono_arch_get_gsharedvt_arg_trampoline (), but for AOT */
2616         /* Similar to arch_emit_specific_trampoline () */
2617         *tramp_size = 24;
2618         code = buf;
2619         ARM_PUSH (code, (1 << ARMREG_R0) | (1 << ARMREG_R1) | (1 << ARMREG_R2) | (1 << ARMREG_R3));
2620         ARM_LDR_IMM (code, ARMREG_R1, ARMREG_PC, 8);
2621         /* Load the arg value from the GOT */
2622         ARM_LDR_REG_REG (code, ARMREG_R0, ARMREG_PC, ARMREG_R1);
2623         /* Load the addr from the GOT */
2624         ARM_LDR_REG_REG (code, ARMREG_R1, ARMREG_PC, ARMREG_R1);
2625         /* Branch to it */
2626         ARM_BX (code, ARMREG_R1);
2627
2628         g_assert (code - buf == 20);
2629
2630         /* Emit it */
2631         emit_bytes (acfg, buf, code - buf);
2632         emit_symbol_diff (acfg, acfg->got_symbol, ".", (offset * sizeof (gpointer)) + 4);
2633 #elif defined(TARGET_ARM64)
2634         arm64_emit_gsharedvt_arg_trampoline (acfg, offset, tramp_size);
2635 #elif defined (TARGET_AMD64)
2636
2637         amd64_emit_load_got_slot (acfg, AMD64_RAX, offset);
2638         amd64_emit_load_got_slot (acfg, MONO_ARCH_IMT_SCRATCH_REG, offset + 1);
2639         g_assert (AMD64_R11 == MONO_ARCH_IMT_SCRATCH_REG);
2640         fprintf (acfg->fp, "jmp *%%r11\n");
2641
2642         *tramp_size = 0x11;
2643 #else
2644         g_assert_not_reached ();
2645 #endif
2646 }
2647
2648 /* END OF ARCH SPECIFIC CODE */
2649
2650 static guint32
2651 mono_get_field_token (MonoClassField *field)
2652 {
2653         MonoClass *klass = field->parent;
2654         int i;
2655
2656         int fcount = mono_class_get_field_count (klass);
2657         for (i = 0; i < fcount; ++i) {
2658                 if (field == &klass->fields [i])
2659                         return MONO_TOKEN_FIELD_DEF | (mono_class_get_first_field_idx (klass) + 1 + i);
2660         }
2661
2662         g_assert_not_reached ();
2663         return 0;
2664 }
2665
2666 static inline void
2667 encode_value (gint32 value, guint8 *buf, guint8 **endbuf)
2668 {
2669         guint8 *p = buf;
2670
2671         //printf ("ENCODE: %d 0x%x.\n", value, value);
2672
2673         /*
2674          * Same encoding as the one used in the metadata, extended to handle values
2675          * greater than 0x1fffffff.
2676          */
2677         if ((value >= 0) && (value <= 127))
2678                 *p++ = value;
2679         else if ((value >= 0) && (value <= 16383)) {
2680                 p [0] = 0x80 | (value >> 8);
2681                 p [1] = value & 0xff;
2682                 p += 2;
2683         } else if ((value >= 0) && (value <= 0x1fffffff)) {
2684                 p [0] = (value >> 24) | 0xc0;
2685                 p [1] = (value >> 16) & 0xff;
2686                 p [2] = (value >> 8) & 0xff;
2687                 p [3] = value & 0xff;
2688                 p += 4;
2689         }
2690         else {
2691                 p [0] = 0xff;
2692                 p [1] = (value >> 24) & 0xff;
2693                 p [2] = (value >> 16) & 0xff;
2694                 p [3] = (value >> 8) & 0xff;
2695                 p [4] = value & 0xff;
2696                 p += 5;
2697         }
2698         if (endbuf)
2699                 *endbuf = p;
2700 }
2701
2702 static void
2703 stream_init (MonoDynamicStream *sh)
2704 {
2705         sh->index = 0;
2706         sh->alloc_size = 4096;
2707         sh->data = (char *)g_malloc (4096);
2708
2709         /* So offsets are > 0 */
2710         sh->data [0] = 0;
2711         sh->index ++;
2712 }
2713
2714 static void
2715 make_room_in_stream (MonoDynamicStream *stream, int size)
2716 {
2717         if (size <= stream->alloc_size)
2718                 return;
2719
2720         while (stream->alloc_size <= size) {
2721                 if (stream->alloc_size < 4096)
2722                         stream->alloc_size = 4096;
2723                 else
2724                         stream->alloc_size *= 2;
2725         }
2726
2727         stream->data = (char *)g_realloc (stream->data, stream->alloc_size);
2728 }
2729
2730 static guint32
2731 add_stream_data (MonoDynamicStream *stream, const char *data, guint32 len)
2732 {
2733         guint32 idx;
2734
2735         make_room_in_stream (stream, stream->index + len);
2736         memcpy (stream->data + stream->index, data, len);
2737         idx = stream->index;
2738         stream->index += len;
2739         return idx;
2740 }
2741
2742 /*
2743  * add_to_blob:
2744  *
2745  *   Add data to the binary blob inside the aot image. Returns the offset inside the
2746  * blob where the data was stored.
2747  */
2748 static guint32
2749 add_to_blob (MonoAotCompile *acfg, const guint8 *data, guint32 data_len)
2750 {
2751         g_assert (!acfg->blob_closed);
2752
2753         if (acfg->blob.alloc_size == 0)
2754                 stream_init (&acfg->blob);
2755
2756         return add_stream_data (&acfg->blob, (char*)data, data_len);
2757 }
2758
2759 static guint32
2760 add_to_blob_aligned (MonoAotCompile *acfg, const guint8 *data, guint32 data_len, guint32 align)
2761 {
2762         char buf [4] = {0};
2763         guint32 count;
2764
2765         if (acfg->blob.alloc_size == 0)
2766                 stream_init (&acfg->blob);
2767
2768         count = acfg->blob.index % align;
2769
2770         /* we assume the stream data will be aligned */
2771         if (count)
2772                 add_stream_data (&acfg->blob, buf, 4 - count);
2773
2774         return add_stream_data (&acfg->blob, (char*)data, data_len);
2775 }
2776
2777 /* Emit a table of data into the aot image */
2778 static void
2779 emit_aot_data (MonoAotCompile *acfg, MonoAotFileTable table, const char *symbol, guint8 *data, int size)
2780 {
2781         if (acfg->data_outfile) {
2782                 acfg->table_offsets [(int)table] = acfg->datafile_offset;
2783                 fwrite (data,1, size, acfg->data_outfile);
2784                 acfg->datafile_offset += size;
2785                 // align the data to 8 bytes. Put zeros in the file (so that every build results in consistent output).
2786                 int align = 8 - size % 8;
2787                 acfg->datafile_offset += align;
2788                 guint8 align_buf [16];
2789                 memset (&align_buf, 0, sizeof (align_buf));
2790                 fwrite (align_buf, align, 1, acfg->data_outfile);
2791         } else if (acfg->llvm) {
2792                 mono_llvm_emit_aot_data (symbol, data, size);
2793         } else {
2794                 emit_section_change (acfg, RODATA_SECT, 0);
2795                 emit_alignment (acfg, 8);
2796                 emit_label (acfg, symbol);
2797                 emit_bytes (acfg, data, size);
2798         }
2799 }
2800
2801 /*
2802  * emit_offset_table:
2803  *
2804  *   Emit a table of increasing offsets in a compact form using differential encoding.
2805  * There is an index entry for each GROUP_SIZE number of entries. The greater the
2806  * group size, the more compact the table becomes, but the slower it becomes to compute
2807  * a given entry. Returns the size of the table.
2808  */
2809 static guint32
2810 emit_offset_table (MonoAotCompile *acfg, const char *symbol, MonoAotFileTable table, int noffsets, int group_size, gint32 *offsets)
2811 {
2812         gint32 current_offset;
2813         int i, buf_size, ngroups, index_entry_size;
2814         guint8 *p, *buf;
2815         guint8 *data_p, *data_buf;
2816         guint32 *index_offsets;
2817
2818         ngroups = (noffsets + (group_size - 1)) / group_size;
2819
2820         index_offsets = g_new0 (guint32, ngroups);
2821
2822         buf_size = noffsets * 4;
2823         p = buf = (guint8 *)g_malloc0 (buf_size);
2824
2825         current_offset = 0;
2826         for (i = 0; i < noffsets; ++i) {
2827                 //printf ("D: %d -> %d\n", i, offsets [i]);
2828                 if ((i % group_size) == 0) {
2829                         index_offsets [i / group_size] = p - buf;
2830                         /* Emit the full value for these entries */
2831                         encode_value (offsets [i], p, &p);
2832                 } else {
2833                         /* The offsets are allowed to be non-increasing */
2834                         //g_assert (offsets [i] >= current_offset);
2835                         encode_value (offsets [i] - current_offset, p, &p);
2836                 }
2837                 current_offset = offsets [i];
2838         }
2839         data_buf = buf;
2840         data_p = p;
2841
2842         if (ngroups && index_offsets [ngroups - 1] < 65000)
2843                 index_entry_size = 2;
2844         else
2845                 index_entry_size = 4;
2846
2847         buf_size = (data_p - data_buf) + (ngroups * 4) + 16;
2848         p = buf = (guint8 *)g_malloc0 (buf_size);
2849
2850         /* Emit the header */
2851         encode_int (noffsets, p, &p);
2852         encode_int (group_size, p, &p);
2853         encode_int (ngroups, p, &p);
2854         encode_int (index_entry_size, p, &p);
2855
2856         /* Emit the index */
2857         for (i = 0; i < ngroups; ++i) {
2858                 if (index_entry_size == 2)
2859                         encode_int16 (index_offsets [i], p, &p);
2860                 else
2861                         encode_int (index_offsets [i], p, &p);
2862         }
2863         /* Emit the data */
2864         memcpy (p, data_buf, data_p - data_buf);
2865         p += data_p - data_buf;
2866
2867         g_assert (p - buf <= buf_size);
2868
2869         emit_aot_data (acfg, table, symbol, buf, p - buf);
2870
2871         g_free (buf);
2872         g_free (data_buf);
2873
2874     return (int)(p - buf);
2875 }
2876
2877 static guint32
2878 get_image_index (MonoAotCompile *cfg, MonoImage *image)
2879 {
2880         guint32 index;
2881
2882         index = GPOINTER_TO_UINT (g_hash_table_lookup (cfg->image_hash, image));
2883         if (index)
2884                 return index - 1;
2885         else {
2886                 index = g_hash_table_size (cfg->image_hash);
2887                 g_hash_table_insert (cfg->image_hash, image, GUINT_TO_POINTER (index + 1));
2888                 g_ptr_array_add (cfg->image_table, image);
2889                 return index;
2890         }
2891 }
2892
2893 static guint32
2894 find_typespec_for_class (MonoAotCompile *acfg, MonoClass *klass)
2895 {
2896         int i;
2897         int len = acfg->image->tables [MONO_TABLE_TYPESPEC].rows;
2898
2899         /* FIXME: Search referenced images as well */
2900         if (!acfg->typespec_classes) {
2901                 acfg->typespec_classes = g_hash_table_new (NULL, NULL);
2902                 for (i = 0; i < len; i++) {
2903                         ERROR_DECL (error);
2904                         int typespec = MONO_TOKEN_TYPE_SPEC | (i + 1);
2905                         MonoClass *klass_key = mono_class_get_and_inflate_typespec_checked (acfg->image, typespec, NULL, error);
2906                         if (!is_ok (error)) {
2907                                 mono_error_cleanup (error);
2908                                 continue;
2909                         }
2910                         g_hash_table_insert (acfg->typespec_classes, klass_key, GINT_TO_POINTER (typespec));
2911                 }
2912         }
2913         return GPOINTER_TO_INT (g_hash_table_lookup (acfg->typespec_classes, klass));
2914 }
2915
2916 static void
2917 encode_method_ref (MonoAotCompile *acfg, MonoMethod *method, guint8 *buf, guint8 **endbuf);
2918
2919 static void
2920 encode_klass_ref (MonoAotCompile *acfg, MonoClass *klass, guint8 *buf, guint8 **endbuf);
2921
2922 static void
2923 encode_ginst (MonoAotCompile *acfg, MonoGenericInst *inst, guint8 *buf, guint8 **endbuf);
2924
2925 static void
2926 encode_type (MonoAotCompile *acfg, MonoType *t, guint8 *buf, guint8 **endbuf);
2927
2928 static void
2929 encode_klass_ref_inner (MonoAotCompile *acfg, MonoClass *klass, guint8 *buf, guint8 **endbuf)
2930 {
2931         guint8 *p = buf;
2932
2933         /*
2934          * The encoding begins with one of the MONO_AOT_TYPEREF values, followed by additional
2935          * information.
2936          */
2937
2938         if (mono_class_is_ginst (klass)) {
2939                 guint32 token;
2940                 g_assert (klass->type_token);
2941
2942                 /* Find a typespec for a class if possible */
2943                 token = find_typespec_for_class (acfg, klass);
2944                 if (token) {
2945                         encode_value (MONO_AOT_TYPEREF_TYPESPEC_TOKEN, p, &p);
2946                         encode_value (token, p, &p);
2947                 } else {
2948                         MonoClass *gclass = mono_class_get_generic_class (klass)->container_class;
2949                         MonoGenericInst *inst = mono_class_get_generic_class (klass)->context.class_inst;
2950                         static int count = 0;
2951                         guint8 *p1 = p;
2952
2953                         encode_value (MONO_AOT_TYPEREF_GINST, p, &p);
2954                         encode_klass_ref (acfg, gclass, p, &p);
2955                         encode_ginst (acfg, inst, p, &p);
2956
2957                         count += p - p1;
2958                 }
2959         } else if (klass->type_token) {
2960                 int iindex = get_image_index (acfg, klass->image);
2961
2962                 g_assert (mono_metadata_token_code (klass->type_token) == MONO_TOKEN_TYPE_DEF);
2963                 if (iindex == 0) {
2964                         encode_value (MONO_AOT_TYPEREF_TYPEDEF_INDEX, p, &p);
2965                         encode_value (klass->type_token - MONO_TOKEN_TYPE_DEF, p, &p);
2966                 } else {
2967                         encode_value (MONO_AOT_TYPEREF_TYPEDEF_INDEX_IMAGE, p, &p);
2968                         encode_value (klass->type_token - MONO_TOKEN_TYPE_DEF, p, &p);
2969                         encode_value (get_image_index (acfg, klass->image), p, &p);
2970                 }
2971         } else if ((klass->byval_arg.type == MONO_TYPE_VAR) || (klass->byval_arg.type == MONO_TYPE_MVAR)) {
2972                 MonoGenericContainer *container = mono_type_get_generic_param_owner (&klass->byval_arg);
2973                 MonoGenericParam *par = klass->byval_arg.data.generic_param;
2974
2975                 encode_value (MONO_AOT_TYPEREF_VAR, p, &p);
2976
2977                 encode_value (par->gshared_constraint ? 1 : 0, p, &p);
2978                 if (par->gshared_constraint) {
2979                         MonoGSharedGenericParam *gpar = (MonoGSharedGenericParam*)par;
2980                         encode_type (acfg, par->gshared_constraint, p, &p);
2981                         encode_klass_ref (acfg, mono_class_create_generic_parameter (gpar->parent), p, &p);
2982                 } else {
2983                         encode_value (klass->byval_arg.type, p, &p);
2984                         encode_value (mono_type_get_generic_param_num (&klass->byval_arg), p, &p);
2985
2986                         encode_value (container->is_anonymous ? 0 : 1, p, &p);
2987
2988                         if (!container->is_anonymous) {
2989                                 encode_value (container->is_method, p, &p);
2990                                 if (container->is_method)
2991                                         encode_method_ref (acfg, container->owner.method, p, &p);
2992                                 else
2993                                         encode_klass_ref (acfg, container->owner.klass, p, &p);
2994                         }
2995                 }
2996         } else if (klass->byval_arg.type == MONO_TYPE_PTR) {
2997                 encode_value (MONO_AOT_TYPEREF_PTR, p, &p);
2998                 encode_type (acfg, &klass->byval_arg, p, &p);
2999         } else {
3000                 /* Array class */
3001                 g_assert (klass->rank > 0);
3002                 encode_value (MONO_AOT_TYPEREF_ARRAY, p, &p);
3003                 encode_value (klass->rank, p, &p);
3004                 encode_klass_ref (acfg, klass->element_class, p, &p);
3005         }
3006         *endbuf = p;
3007 }
3008
3009 /*
3010  * encode_klass_ref:
3011  *
3012  *   Encode a reference to KLASS. We use our home-grown encoding instead of the
3013  * standard metadata encoding.
3014  */
3015 static void
3016 encode_klass_ref (MonoAotCompile *acfg, MonoClass *klass, guint8 *buf, guint8 **endbuf)
3017 {
3018         gboolean shared = FALSE;
3019
3020         /*
3021          * The encoding of generic instances is large so emit them only once.
3022          */
3023         if (mono_class_is_ginst (klass)) {
3024                 guint32 token;
3025                 g_assert (klass->type_token);
3026
3027                 /* Find a typespec for a class if possible */
3028                 token = find_typespec_for_class (acfg, klass);
3029                 if (!token)
3030                         shared = TRUE;
3031         } else if ((klass->byval_arg.type == MONO_TYPE_VAR) || (klass->byval_arg.type == MONO_TYPE_MVAR)) {
3032                 shared = TRUE;
3033         }
3034
3035         if (shared) {
3036                 guint offset = GPOINTER_TO_UINT (g_hash_table_lookup (acfg->klass_blob_hash, klass));
3037                 guint8 *buf2, *p;
3038
3039                 if (!offset) {
3040                         buf2 = (guint8 *)g_malloc (1024);
3041                         p = buf2;
3042
3043                         encode_klass_ref_inner (acfg, klass, p, &p);
3044                         g_assert (p - buf2 < 1024);
3045
3046                         offset = add_to_blob (acfg, buf2, p - buf2);
3047                         g_free (buf2);
3048
3049                         g_hash_table_insert (acfg->klass_blob_hash, klass, GUINT_TO_POINTER (offset + 1));
3050                 } else {
3051                         offset --;
3052                 }
3053
3054                 p = buf;
3055                 encode_value (MONO_AOT_TYPEREF_BLOB_INDEX, p, &p);
3056                 encode_value (offset, p, &p);
3057                 *endbuf = p;
3058                 return;
3059         }
3060
3061         encode_klass_ref_inner (acfg, klass, buf, endbuf);
3062 }
3063
3064 static void
3065 encode_field_info (MonoAotCompile *cfg, MonoClassField *field, guint8 *buf, guint8 **endbuf)
3066 {
3067         guint32 token = mono_get_field_token (field);
3068         guint8 *p = buf;
3069
3070         encode_klass_ref (cfg, field->parent, p, &p);
3071         g_assert (mono_metadata_token_code (token) == MONO_TOKEN_FIELD_DEF);
3072         encode_value (token - MONO_TOKEN_FIELD_DEF, p, &p);
3073         *endbuf = p;
3074 }
3075
3076 static void
3077 encode_ginst (MonoAotCompile *acfg, MonoGenericInst *inst, guint8 *buf, guint8 **endbuf)
3078 {
3079         guint8 *p = buf;
3080         int i;
3081
3082         encode_value (inst->type_argc, p, &p);
3083         for (i = 0; i < inst->type_argc; ++i)
3084                 encode_klass_ref (acfg, mono_class_from_mono_type (inst->type_argv [i]), p, &p);
3085         *endbuf = p;
3086 }
3087
3088 static void
3089 encode_generic_context (MonoAotCompile *acfg, MonoGenericContext *context, guint8 *buf, guint8 **endbuf)
3090 {
3091         guint8 *p = buf;
3092         MonoGenericInst *inst;
3093
3094         inst = context->class_inst;
3095         if (inst) {
3096                 g_assert (inst->type_argc);
3097                 encode_ginst (acfg, inst, p, &p);
3098         } else {
3099                 encode_value (0, p, &p);
3100         }
3101         inst = context->method_inst;
3102         if (inst) {
3103                 g_assert (inst->type_argc);
3104                 encode_ginst (acfg, inst, p, &p);
3105         } else {
3106                 encode_value (0, p, &p);
3107         }
3108         *endbuf = p;
3109 }
3110
3111 static void
3112 encode_type (MonoAotCompile *acfg, MonoType *t, guint8 *buf, guint8 **endbuf)
3113 {
3114         guint8 *p = buf;
3115
3116         g_assert (t->num_mods == 0);
3117         /* t->attrs can be ignored */
3118         //g_assert (t->attrs == 0);
3119
3120         if (t->pinned) {
3121                 *p = MONO_TYPE_PINNED;
3122                 ++p;
3123         }
3124         if (t->byref) {
3125                 *p = MONO_TYPE_BYREF;
3126                 ++p;
3127         }
3128
3129         *p = t->type;
3130         p ++;
3131
3132         switch (t->type) {
3133         case MONO_TYPE_VOID:
3134         case MONO_TYPE_BOOLEAN:
3135         case MONO_TYPE_CHAR:
3136         case MONO_TYPE_I1:
3137         case MONO_TYPE_U1:
3138         case MONO_TYPE_I2:
3139         case MONO_TYPE_U2:
3140         case MONO_TYPE_I4:
3141         case MONO_TYPE_U4:
3142         case MONO_TYPE_I8:
3143         case MONO_TYPE_U8:
3144         case MONO_TYPE_R4:
3145         case MONO_TYPE_R8:
3146         case MONO_TYPE_I:
3147         case MONO_TYPE_U:
3148         case MONO_TYPE_STRING:
3149         case MONO_TYPE_OBJECT:
3150         case MONO_TYPE_TYPEDBYREF:
3151                 break;
3152         case MONO_TYPE_VALUETYPE:
3153         case MONO_TYPE_CLASS:
3154                 encode_klass_ref (acfg, mono_class_from_mono_type (t), p, &p);
3155                 break;
3156         case MONO_TYPE_SZARRAY:
3157                 encode_klass_ref (acfg, t->data.klass, p, &p);
3158                 break;
3159         case MONO_TYPE_PTR:
3160                 encode_type (acfg, t->data.type, p, &p);
3161                 break;
3162         case MONO_TYPE_GENERICINST: {
3163                 MonoClass *gclass = t->data.generic_class->container_class;
3164                 MonoGenericInst *inst = t->data.generic_class->context.class_inst;
3165
3166                 encode_klass_ref (acfg, gclass, p, &p);
3167                 encode_ginst (acfg, inst, p, &p);
3168                 break;
3169         }
3170         case MONO_TYPE_ARRAY: {
3171                 MonoArrayType *array = t->data.array;
3172                 int i;
3173
3174                 encode_klass_ref (acfg, array->eklass, p, &p);
3175                 encode_value (array->rank, p, &p);
3176                 encode_value (array->numsizes, p, &p);
3177                 for (i = 0; i < array->numsizes; ++i)
3178                         encode_value (array->sizes [i], p, &p);
3179                 encode_value (array->numlobounds, p, &p);
3180                 for (i = 0; i < array->numlobounds; ++i)
3181                         encode_value (array->lobounds [i], p, &p);
3182                 break;
3183         }
3184         case MONO_TYPE_VAR:
3185         case MONO_TYPE_MVAR:
3186                 encode_klass_ref (acfg, mono_class_from_mono_type (t), p, &p);
3187                 break;
3188         default:
3189                 g_assert_not_reached ();
3190         }
3191
3192         *endbuf = p;
3193 }
3194
3195 static void
3196 encode_signature (MonoAotCompile *acfg, MonoMethodSignature *sig, guint8 *buf, guint8 **endbuf)
3197 {
3198         guint8 *p = buf;
3199         guint32 flags = 0;
3200         int i;
3201
3202         /* Similar to the metadata encoding */
3203         if (sig->generic_param_count)
3204                 flags |= 0x10;
3205         if (sig->hasthis)
3206                 flags |= 0x20;
3207         if (sig->explicit_this)
3208                 flags |= 0x40;
3209         flags |= (sig->call_convention & 0x0F);
3210
3211         *p = flags;
3212         ++p;
3213         if (sig->generic_param_count)
3214                 encode_value (sig->generic_param_count, p, &p);
3215         encode_value (sig->param_count, p, &p);
3216
3217         encode_type (acfg, sig->ret, p, &p);
3218         for (i = 0; i < sig->param_count; ++i) {
3219                 if (sig->sentinelpos == i) {
3220                         *p = MONO_TYPE_SENTINEL;
3221                         ++p;
3222                 }
3223                 encode_type (acfg, sig->params [i], p, &p);
3224         }
3225
3226         *endbuf = p;
3227 }
3228
3229 #define MAX_IMAGE_INDEX 250
3230
3231 static void
3232 encode_method_ref (MonoAotCompile *acfg, MonoMethod *method, guint8 *buf, guint8 **endbuf)
3233 {
3234         guint32 image_index = get_image_index (acfg, method->klass->image);
3235         guint32 token = method->token;
3236         MonoJumpInfoToken *ji;
3237         guint8 *p = buf;
3238
3239         /*
3240          * The encoding for most methods is as follows:
3241          * - image index encoded as a leb128
3242          * - token index encoded as a leb128
3243          * Values of image index >= MONO_AOT_METHODREF_MIN are used to mark additional
3244          * types of method encodings.
3245          */
3246
3247         /* Mark methods which can't use aot trampolines because they need the further
3248          * processing in mono_magic_trampoline () which requires a MonoMethod*.
3249          */
3250         if ((method->is_generic && (method->flags & METHOD_ATTRIBUTE_VIRTUAL)) ||
3251                 (method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED))
3252                 encode_value ((MONO_AOT_METHODREF_NO_AOT_TRAMPOLINE << 24), p, &p);
3253
3254         if (method->wrapper_type) {
3255                 WrapperInfo *info = mono_marshal_get_wrapper_info (method);
3256
3257                 encode_value ((MONO_AOT_METHODREF_WRAPPER << 24), p, &p);
3258
3259                 encode_value (method->wrapper_type, p, &p);
3260
3261                 switch (method->wrapper_type) {
3262                 case MONO_WRAPPER_REMOTING_INVOKE:
3263                 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK:
3264                 case MONO_WRAPPER_XDOMAIN_INVOKE: {
3265                         MonoMethod *m;
3266
3267                         m = mono_marshal_method_from_wrapper (method);
3268                         g_assert (m);
3269                         encode_method_ref (acfg, m, p, &p);
3270                         break;
3271                 }
3272                 case MONO_WRAPPER_PROXY_ISINST:
3273                 case MONO_WRAPPER_LDFLD:
3274                 case MONO_WRAPPER_LDFLDA:
3275                 case MONO_WRAPPER_STFLD: {
3276                         g_assert (info);
3277                         encode_klass_ref (acfg, info->d.proxy.klass, p, &p);
3278                         break;
3279                 }
3280                 case MONO_WRAPPER_ALLOC: {
3281                         /* The GC name is saved once in MonoAotFileInfo */
3282                         g_assert (info->d.alloc.alloc_type != -1);
3283                         encode_value (info->d.alloc.alloc_type, p, &p);
3284                         break;
3285                 }
3286                 case MONO_WRAPPER_WRITE_BARRIER: {
3287                         g_assert (info);
3288                         break;
3289                 }
3290                 case MONO_WRAPPER_STELEMREF: {
3291                         g_assert (info);
3292                         encode_value (info->subtype, p, &p);
3293                         if (info->subtype == WRAPPER_SUBTYPE_VIRTUAL_STELEMREF)
3294                                 encode_value (info->d.virtual_stelemref.kind, p, &p);
3295                         break;
3296                 }
3297                 case MONO_WRAPPER_UNKNOWN: {
3298                         g_assert (info);
3299                         encode_value (info->subtype, p, &p);
3300                         if (info->subtype == WRAPPER_SUBTYPE_PTR_TO_STRUCTURE ||
3301                                 info->subtype == WRAPPER_SUBTYPE_STRUCTURE_TO_PTR)
3302                                 encode_klass_ref (acfg, method->klass, p, &p);
3303                         else if (info->subtype == WRAPPER_SUBTYPE_SYNCHRONIZED_INNER)
3304                                 encode_method_ref (acfg, info->d.synchronized_inner.method, p, &p);
3305                         else if (info->subtype == WRAPPER_SUBTYPE_ARRAY_ACCESSOR)
3306                                 encode_method_ref (acfg, info->d.array_accessor.method, p, &p);
3307                         else if (info->subtype == WRAPPER_SUBTYPE_INTERP_IN)
3308                                 encode_signature (acfg, info->d.interp_in.sig, p, &p);
3309                         else if (info->subtype == WRAPPER_SUBTYPE_GSHAREDVT_IN_SIG)
3310                                 encode_signature (acfg, info->d.gsharedvt.sig, p, &p);
3311                         else if (info->subtype == WRAPPER_SUBTYPE_GSHAREDVT_OUT_SIG)
3312                                 encode_signature (acfg, info->d.gsharedvt.sig, p, &p);
3313                         break;
3314                 }
3315                 case MONO_WRAPPER_MANAGED_TO_NATIVE: {
3316                         g_assert (info);
3317                         encode_value (info->subtype, p, &p);
3318                         if (info->subtype == WRAPPER_SUBTYPE_ICALL_WRAPPER) {
3319                                 strcpy ((char*)p, method->name);
3320                                 p += strlen (method->name) + 1;
3321                         } else if (info->subtype == WRAPPER_SUBTYPE_NATIVE_FUNC_AOT) {
3322                                 encode_method_ref (acfg, info->d.managed_to_native.method, p, &p);
3323                         } else {
3324                                 g_assert (info->subtype == WRAPPER_SUBTYPE_NONE || info->subtype == WRAPPER_SUBTYPE_PINVOKE);
3325                                 encode_method_ref (acfg, info->d.managed_to_native.method, p, &p);
3326                         }
3327                         break;
3328                 }
3329                 case MONO_WRAPPER_SYNCHRONIZED: {
3330                         MonoMethod *m;
3331
3332                         m = mono_marshal_method_from_wrapper (method);
3333                         g_assert (m);
3334                         g_assert (m != method);
3335                         encode_method_ref (acfg, m, p, &p);
3336                         break;
3337                 }
3338                 case MONO_WRAPPER_MANAGED_TO_MANAGED: {
3339                         g_assert (info);
3340                         encode_value (info->subtype, p, &p);
3341
3342                         if (info->subtype == WRAPPER_SUBTYPE_ELEMENT_ADDR) {
3343                                 encode_value (info->d.element_addr.rank, p, &p);
3344                                 encode_value (info->d.element_addr.elem_size, p, &p);
3345                         } else if (info->subtype == WRAPPER_SUBTYPE_STRING_CTOR) {
3346                                 encode_method_ref (acfg, info->d.string_ctor.method, p, &p);
3347                         } else {
3348                                 g_assert_not_reached ();
3349                         }
3350                         break;
3351                 }
3352                 case MONO_WRAPPER_CASTCLASS: {
3353                         g_assert (info);
3354                         encode_value (info->subtype, p, &p);
3355                         break;
3356                 }
3357                 case MONO_WRAPPER_RUNTIME_INVOKE: {
3358                         g_assert (info);
3359                         encode_value (info->subtype, p, &p);
3360                         if (info->subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_DIRECT || info->subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_VIRTUAL)
3361                                 encode_method_ref (acfg, info->d.runtime_invoke.method, p, &p);
3362                         else if (info->subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_NORMAL)
3363                                 encode_signature (acfg, info->d.runtime_invoke.sig, p, &p);
3364                         break;
3365                 }
3366                 case MONO_WRAPPER_DELEGATE_INVOKE:
3367                 case MONO_WRAPPER_DELEGATE_BEGIN_INVOKE:
3368                 case MONO_WRAPPER_DELEGATE_END_INVOKE: {
3369                         if (method->is_inflated) {
3370                                 /* These wrappers are identified by their class */
3371                                 encode_value (1, p, &p);
3372                                 encode_klass_ref (acfg, method->klass, p, &p);
3373                         } else {
3374                                 MonoMethodSignature *sig = mono_method_signature (method);
3375                                 WrapperInfo *info = mono_marshal_get_wrapper_info (method);
3376
3377                                 encode_value (0, p, &p);
3378                                 if (method->wrapper_type == MONO_WRAPPER_DELEGATE_INVOKE)
3379                                         encode_value (info ? info->subtype : 0, p, &p);
3380                                 encode_signature (acfg, sig, p, &p);
3381                         }
3382                         break;
3383                 }
3384                 case MONO_WRAPPER_NATIVE_TO_MANAGED: {
3385                         g_assert (info);
3386                         encode_method_ref (acfg, info->d.native_to_managed.method, p, &p);
3387                         encode_klass_ref (acfg, info->d.native_to_managed.klass, p, &p);
3388                         break;
3389                 }
3390                 default:
3391                         g_assert_not_reached ();
3392                 }
3393         } else if (mono_method_signature (method)->is_inflated) {
3394                 /*
3395                  * This is a generic method, find the original token which referenced it and
3396                  * encode that.
3397                  * Obtain the token from information recorded by the JIT.
3398                  */
3399                 ji = (MonoJumpInfoToken *)g_hash_table_lookup (acfg->token_info_hash, method);
3400                 if (ji) {
3401                         image_index = get_image_index (acfg, ji->image);
3402                         g_assert (image_index < MAX_IMAGE_INDEX);
3403                         token = ji->token;
3404
3405                         encode_value ((MONO_AOT_METHODREF_METHODSPEC << 24), p, &p);
3406                         encode_value (image_index, p, &p);
3407                         encode_value (token, p, &p);
3408                 } else {
3409                         MonoMethod *declaring;
3410                         MonoGenericContext *context = mono_method_get_context (method);
3411
3412                         g_assert (method->is_inflated);
3413                         declaring = ((MonoMethodInflated*)method)->declaring;
3414
3415                         /*
3416                          * This might be a non-generic method of a generic instance, which
3417                          * doesn't have a token since the reference is generated by the JIT
3418                          * like Nullable:Box/Unbox, or by generic sharing.
3419                          */
3420                         encode_value ((MONO_AOT_METHODREF_GINST << 24), p, &p);
3421                         /* Encode the klass */
3422                         encode_klass_ref (acfg, method->klass, p, &p);
3423                         /* Encode the method */
3424                         image_index = get_image_index (acfg, method->klass->image);
3425                         g_assert (image_index < MAX_IMAGE_INDEX);
3426                         g_assert (declaring->token);
3427                         token = declaring->token;
3428                         g_assert (mono_metadata_token_table (token) == MONO_TABLE_METHOD);
3429                         encode_value (image_index, p, &p);
3430                         encode_value (token, p, &p);
3431                         encode_generic_context (acfg, context, p, &p);
3432                 }
3433         } else if (token == 0) {
3434                 /* This might be a method of a constructed type like int[,].Set */
3435                 /* Obtain the token from information recorded by the JIT */
3436                 ji = (MonoJumpInfoToken *)g_hash_table_lookup (acfg->token_info_hash, method);
3437                 if (ji) {
3438                         image_index = get_image_index (acfg, ji->image);
3439                         g_assert (image_index < MAX_IMAGE_INDEX);
3440                         token = ji->token;
3441
3442                         encode_value ((MONO_AOT_METHODREF_METHODSPEC << 24), p, &p);
3443                         encode_value (image_index, p, &p);
3444                         encode_value (token, p, &p);
3445                 } else {
3446                         /* Array methods */
3447                         g_assert (method->klass->rank);
3448
3449                         /* Encode directly */
3450                         encode_value ((MONO_AOT_METHODREF_ARRAY << 24), p, &p);
3451                         encode_klass_ref (acfg, method->klass, p, &p);
3452                         if (!strcmp (method->name, ".ctor") && mono_method_signature (method)->param_count == method->klass->rank)
3453                                 encode_value (0, p, &p);
3454                         else if (!strcmp (method->name, ".ctor") && mono_method_signature (method)->param_count == method->klass->rank * 2)
3455                                 encode_value (1, p, &p);
3456                         else if (!strcmp (method->name, "Get"))
3457                                 encode_value (2, p, &p);
3458                         else if (!strcmp (method->name, "Address"))
3459                                 encode_value (3, p, &p);
3460                         else if (!strcmp (method->name, "Set"))
3461                                 encode_value (4, p, &p);
3462                         else
3463                                 g_assert_not_reached ();
3464                 }
3465         } else {
3466                 g_assert (mono_metadata_token_table (token) == MONO_TABLE_METHOD);
3467
3468                 if (image_index >= MONO_AOT_METHODREF_MIN) {
3469                         encode_value ((MONO_AOT_METHODREF_LARGE_IMAGE_INDEX << 24), p, &p);
3470                         encode_value (image_index, p, &p);
3471                         encode_value (mono_metadata_token_index (token), p, &p);
3472                 } else {
3473                         encode_value ((image_index << 24) | mono_metadata_token_index (token), p, &p);
3474                 }
3475         }
3476         *endbuf = p;
3477 }
3478
3479 static gint
3480 compare_patches (gconstpointer a, gconstpointer b)
3481 {
3482         int i, j;
3483
3484         i = (*(MonoJumpInfo**)a)->ip.i;
3485         j = (*(MonoJumpInfo**)b)->ip.i;
3486
3487         if (i < j)
3488                 return -1;
3489         else
3490                 if (i > j)
3491                         return 1;
3492         else
3493                 return 0;
3494 }
3495
3496 static G_GNUC_UNUSED char*
3497 patch_to_string (MonoJumpInfo *patch_info)
3498 {
3499         GString *str;
3500
3501         str = g_string_new ("");
3502
3503         g_string_append_printf (str, "%s(", get_patch_name (patch_info->type));
3504
3505         switch (patch_info->type) {
3506         case MONO_PATCH_INFO_VTABLE:
3507                 mono_type_get_desc (str, &patch_info->data.klass->byval_arg, TRUE);
3508                 break;
3509         default:
3510                 break;
3511         }
3512         g_string_append_printf (str, ")");
3513         return g_string_free (str, FALSE);
3514 }
3515
3516 /*
3517  * is_plt_patch:
3518  *
3519  *   Return whenever PATCH_INFO refers to a direct call, and thus requires a
3520  * PLT entry.
3521  */
3522 static inline gboolean
3523 is_plt_patch (MonoJumpInfo *patch_info)
3524 {
3525         switch (patch_info->type) {
3526         case MONO_PATCH_INFO_METHOD:
3527         case MONO_PATCH_INFO_INTERNAL_METHOD:
3528         case MONO_PATCH_INFO_JIT_ICALL_ADDR:
3529         case MONO_PATCH_INFO_ICALL_ADDR_CALL:
3530         case MONO_PATCH_INFO_RGCTX_FETCH:
3531                 return TRUE;
3532         default:
3533                 return FALSE;
3534         }
3535 }
3536
3537 /*
3538  * get_plt_symbol:
3539  *
3540  *   Return the symbol identifying the plt entry PLT_OFFSET.
3541  */
3542 static char*
3543 get_plt_symbol (MonoAotCompile *acfg, int plt_offset, MonoJumpInfo *patch_info)
3544 {
3545 #ifdef TARGET_MACH
3546         /*
3547          * The Apple linker reorganizes object files, so it doesn't like branches to local
3548          * labels, since those have no relocations.
3549          */
3550         return g_strdup_printf ("%sp_%d", acfg->llvm_label_prefix, plt_offset);
3551 #else
3552         return g_strdup_printf ("%sp_%d", acfg->temp_prefix, plt_offset);
3553 #endif
3554 }
3555
3556 /*
3557  * get_plt_entry:
3558  *
3559  *   Return a PLT entry which belongs to the method identified by PATCH_INFO.
3560  */
3561 static MonoPltEntry*
3562 get_plt_entry (MonoAotCompile *acfg, MonoJumpInfo *patch_info)
3563 {
3564         MonoPltEntry *res;
3565         gboolean synchronized = FALSE;
3566         static int synchronized_symbol_idx;
3567
3568         if (!is_plt_patch (patch_info))
3569                 return NULL;
3570
3571         if (!acfg->patch_to_plt_entry [patch_info->type])
3572                 acfg->patch_to_plt_entry [patch_info->type] = g_hash_table_new (mono_patch_info_hash, mono_patch_info_equal);
3573         res = (MonoPltEntry *)g_hash_table_lookup (acfg->patch_to_plt_entry [patch_info->type], patch_info);
3574
3575         if (!acfg->llvm && patch_info->type == MONO_PATCH_INFO_METHOD && (patch_info->data.method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED)) {
3576                 /*
3577                  * Allocate a separate PLT slot for each such patch, since some plt
3578                  * entries will refer to the method itself, and some will refer to the
3579                  * wrapper.
3580                  */
3581                 res = NULL;
3582                 synchronized = TRUE;
3583         }
3584
3585         if (!res) {
3586                 MonoJumpInfo *new_ji;
3587
3588                 new_ji = mono_patch_info_dup_mp (acfg->mempool, patch_info);
3589
3590                 res = (MonoPltEntry *)mono_mempool_alloc0 (acfg->mempool, sizeof (MonoPltEntry));
3591                 res->plt_offset = acfg->plt_offset;
3592                 res->ji = new_ji;
3593                 res->symbol = get_plt_symbol (acfg, res->plt_offset, patch_info);
3594                 if (acfg->aot_opts.write_symbols)
3595                         res->debug_sym = get_plt_entry_debug_sym (acfg, res->ji, acfg->plt_entry_debug_sym_cache);
3596                 if (synchronized) {
3597                         /* Avoid duplicate symbols because we don't cache */
3598                         res->symbol = g_strdup_printf ("%s_%d", res->symbol, synchronized_symbol_idx);
3599                         if (res->debug_sym)
3600                                 res->debug_sym = g_strdup_printf ("%s_%d", res->debug_sym, synchronized_symbol_idx);
3601                         synchronized_symbol_idx ++;
3602                 }
3603                 if (res->debug_sym)
3604                         res->llvm_symbol = g_strdup_printf ("%s_%s_llvm", res->symbol, res->debug_sym);
3605                 else
3606                         res->llvm_symbol = g_strdup_printf ("%s_llvm", res->symbol);
3607
3608                 g_hash_table_insert (acfg->patch_to_plt_entry [new_ji->type], new_ji, res);
3609
3610                 g_hash_table_insert (acfg->plt_offset_to_entry, GUINT_TO_POINTER (res->plt_offset), res);
3611
3612                 //g_assert (mono_patch_info_equal (patch_info, new_ji));
3613                 //mono_print_ji (patch_info); printf ("\n");
3614                 //g_hash_table_print_stats (acfg->patch_to_plt_entry);
3615
3616                 acfg->plt_offset ++;
3617         }
3618
3619         return res;
3620 }
3621
3622 /**
3623  * get_got_offset:
3624  *
3625  *   Returns the offset of the GOT slot where the runtime object resulting from resolving
3626  * JI could be found if it exists, otherwise allocates a new one.
3627  */
3628 static guint32
3629 get_got_offset (MonoAotCompile *acfg, gboolean llvm, MonoJumpInfo *ji)
3630 {
3631         guint32 got_offset;
3632         GotInfo *info = llvm ? &acfg->llvm_got_info : &acfg->got_info;
3633
3634         got_offset = GPOINTER_TO_UINT (g_hash_table_lookup (info->patch_to_got_offset_by_type [ji->type], ji));
3635         if (got_offset)
3636                 return got_offset - 1;
3637
3638         if (llvm) {
3639                 got_offset = acfg->llvm_got_offset;
3640                 acfg->llvm_got_offset ++;
3641         } else {
3642                 got_offset = acfg->got_offset;
3643                 acfg->got_offset ++;
3644         }
3645
3646         acfg->stats.got_slots ++;
3647         acfg->stats.got_slot_types [ji->type] ++;
3648
3649         g_hash_table_insert (info->patch_to_got_offset, ji, GUINT_TO_POINTER (got_offset + 1));
3650         g_hash_table_insert (info->patch_to_got_offset_by_type [ji->type], ji, GUINT_TO_POINTER (got_offset + 1));
3651         g_ptr_array_add (info->got_patches, ji);
3652
3653         return got_offset;
3654 }
3655
3656 /* Add a method to the list of methods which need to be emitted */
3657 static void
3658 add_method_with_index (MonoAotCompile *acfg, MonoMethod *method, int index, gboolean extra)
3659 {
3660         g_assert (method);
3661         if (!g_hash_table_lookup (acfg->method_indexes, method)) {
3662                 g_ptr_array_add (acfg->methods, method);
3663                 g_hash_table_insert (acfg->method_indexes, method, GUINT_TO_POINTER (index + 1));
3664                 acfg->nmethods = acfg->methods->len + 1;
3665         }
3666
3667         if (method->wrapper_type || extra)
3668                 g_ptr_array_add (acfg->extra_methods, method);
3669 }
3670
3671 static gboolean
3672 prefer_gsharedvt_method (MonoAotCompile *acfg, MonoMethod *method)
3673 {
3674         /* One instantiation with valuetypes is generated for each async method */
3675         if (method->klass->image == mono_defaults.corlib && (!strcmp (method->klass->name, "AsyncMethodBuilderCore") || !strcmp (method->klass->name, "AsyncVoidMethodBuilder")))
3676                 return TRUE;
3677         else
3678                 return FALSE;
3679 }
3680
3681 static guint32
3682 get_method_index (MonoAotCompile *acfg, MonoMethod *method)
3683 {
3684         int index = GPOINTER_TO_UINT (g_hash_table_lookup (acfg->method_indexes, method));
3685
3686         g_assert (index);
3687
3688         return index - 1;
3689 }
3690
3691 static int
3692 add_method_full (MonoAotCompile *acfg, MonoMethod *method, gboolean extra, int depth)
3693 {
3694         int index;
3695
3696         index = GPOINTER_TO_UINT (g_hash_table_lookup (acfg->method_indexes, method));
3697         if (index)
3698                 return index - 1;
3699
3700         index = acfg->method_index;
3701         add_method_with_index (acfg, method, index, extra);
3702
3703         g_ptr_array_add (acfg->method_order, GUINT_TO_POINTER (index));
3704
3705         g_hash_table_insert (acfg->method_depth, method, GUINT_TO_POINTER (depth));
3706
3707         acfg->method_index ++;
3708
3709         return index;
3710 }
3711
3712 static int
3713 add_method (MonoAotCompile *acfg, MonoMethod *method)
3714 {
3715         return add_method_full (acfg, method, FALSE, 0);
3716 }
3717
3718 static void
3719 mono_dedup_cache_method (MonoAotCompile *acfg, MonoMethod *method)
3720 {
3721         g_assert (acfg->dedup_stats);
3722
3723         char *name = mono_aot_get_mangled_method_name (method);
3724         g_assert (name);
3725
3726         // For stats
3727         char *stats_name = g_strdup (name);
3728
3729         g_assert (acfg->dedup_cache);
3730
3731         if (!g_hash_table_lookup (acfg->dedup_cache, name)) {
3732                 // This AOTCompile owns this method
3733                 // We do this to decide whether to write it to disk
3734                 // during a dedup run (first phase, where we skip).
3735                 //
3736                 // If never changed, then maybe can avoid a recompile
3737                 // of the cache.
3738                 //
3739                 // Files not read in during last phase.
3740                 acfg->dedup_cache_changed = TRUE;
3741
3742                 // owns name
3743                 g_hash_table_insert (acfg->dedup_cache, name, method);
3744         } else {
3745                 // owns name
3746                 g_free (name);
3747         }
3748
3749         guint count = GPOINTER_TO_UINT (g_hash_table_lookup (acfg->dedup_stats, stats_name));
3750         count++;
3751         g_hash_table_insert (acfg->dedup_stats, stats_name, GUINT_TO_POINTER (count));
3752 }
3753
3754 static void
3755 add_extra_method_with_depth (MonoAotCompile *acfg, MonoMethod *method, int depth)
3756 {
3757         if (mono_method_is_generic_sharable_full (method, TRUE, TRUE, FALSE))
3758                 method = mini_get_shared_method (method);
3759         else if ((acfg->opts & MONO_OPT_GSHAREDVT) && prefer_gsharedvt_method (acfg, method) && mono_method_is_generic_sharable_full (method, FALSE, FALSE, TRUE))
3760                 /* Use the gsharedvt version */
3761                 method = mini_get_shared_method_full (method, TRUE, TRUE);
3762
3763         if ((acfg->aot_opts.dedup || acfg->aot_opts.dedup_include) && mono_aot_can_dedup (method)) {
3764                 mono_dedup_cache_method (acfg, method);
3765
3766                 if (!acfg->dedup_emit_mode)
3767                         return;
3768         }
3769
3770         if (acfg->aot_opts.log_generics)
3771                 aot_printf (acfg, "%*sAdding method %s.\n", depth, "", mono_method_get_full_name (method));
3772
3773         add_method_full (acfg, method, TRUE, depth);
3774 }
3775
3776 static void
3777 add_extra_method (MonoAotCompile *acfg, MonoMethod *method)
3778 {
3779         add_extra_method_with_depth (acfg, method, 0);
3780 }
3781
3782 static void
3783 add_jit_icall_wrapper (gpointer key, gpointer value, gpointer user_data)
3784 {
3785         MonoAotCompile *acfg = (MonoAotCompile *)user_data;
3786         MonoJitICallInfo *callinfo = (MonoJitICallInfo *)value;
3787         MonoMethod *wrapper;
3788         char *name;
3789
3790         if (!callinfo->sig)
3791                 return;
3792
3793         name = g_strdup_printf ("__icall_wrapper_%s", callinfo->name);
3794         wrapper = mono_marshal_get_icall_wrapper (callinfo->sig, name, callinfo->func, TRUE);
3795         g_free (name);
3796
3797         add_method (acfg, wrapper);
3798 }
3799
3800 static MonoMethod*
3801 get_runtime_invoke_sig (MonoMethodSignature *sig)
3802 {
3803         MonoMethodBuilder *mb;
3804         MonoMethod *m;
3805
3806         mb = mono_mb_new (mono_defaults.object_class, "FOO", MONO_WRAPPER_NONE);
3807         m = mono_mb_create_method (mb, sig, 16);
3808         MonoMethod *invoke = mono_marshal_get_runtime_invoke (m, FALSE);
3809         mono_mb_free (mb);
3810         return invoke;
3811 }
3812
3813 static MonoMethod*
3814 get_runtime_invoke (MonoAotCompile *acfg, MonoMethod *method, gboolean virtual_)
3815 {
3816         return mono_marshal_get_runtime_invoke (method, virtual_);
3817 }
3818
3819 static gboolean
3820 can_marshal_struct (MonoClass *klass)
3821 {
3822         MonoClassField *field;
3823         gboolean can_marshal = TRUE;
3824         gpointer iter = NULL;
3825         MonoMarshalType *info;
3826         int i;
3827
3828         if (mono_class_is_auto_layout (klass))
3829                 return FALSE;
3830
3831         info = mono_marshal_load_type_info (klass);
3832
3833         /* Only allow a few field types to avoid asserts in the marshalling code */
3834         while ((field = mono_class_get_fields (klass, &iter))) {
3835                 if ((field->type->attrs & FIELD_ATTRIBUTE_STATIC))
3836                         continue;
3837
3838                 switch (field->type->type) {
3839                 case MONO_TYPE_I4:
3840                 case MONO_TYPE_U4:
3841                 case MONO_TYPE_I1:
3842                 case MONO_TYPE_U1:
3843                 case MONO_TYPE_BOOLEAN:
3844                 case MONO_TYPE_I2:
3845                 case MONO_TYPE_U2:
3846                 case MONO_TYPE_CHAR:
3847                 case MONO_TYPE_I8:
3848                 case MONO_TYPE_U8:
3849                 case MONO_TYPE_I:
3850                 case MONO_TYPE_U:
3851                 case MONO_TYPE_PTR:
3852                 case MONO_TYPE_R4:
3853                 case MONO_TYPE_R8:
3854                 case MONO_TYPE_STRING:
3855                         break;
3856                 case MONO_TYPE_VALUETYPE:
3857                         if (!mono_class_from_mono_type (field->type)->enumtype && !can_marshal_struct (mono_class_from_mono_type (field->type)))
3858                                 can_marshal = FALSE;
3859                         break;
3860                 case MONO_TYPE_SZARRAY: {
3861                         gboolean has_mspec = FALSE;
3862
3863                         if (info) {
3864                                 for (i = 0; i < info->num_fields; ++i) {
3865                                         if (info->fields [i].field == field && info->fields [i].mspec)
3866                                                 has_mspec = TRUE;
3867                                 }
3868                         }
3869                         if (!has_mspec)
3870                                 can_marshal = FALSE;
3871                         break;
3872                 }
3873                 default:
3874                         can_marshal = FALSE;
3875                         break;
3876                 }
3877         }
3878
3879         /* Special cases */
3880         /* Its hard to compute whenever these can be marshalled or not */
3881         if (!strcmp (klass->name_space, "System.Net.NetworkInformation.MacOsStructs") && strcmp (klass->name, "sockaddr_dl"))
3882                 return TRUE;
3883
3884         return can_marshal;
3885 }
3886
3887 static void
3888 create_gsharedvt_inst (MonoAotCompile *acfg, MonoMethod *method, MonoGenericContext *ctx)
3889 {
3890         /* Create a vtype instantiation */
3891         MonoGenericContext shared_context;
3892         MonoType **args;
3893         MonoGenericInst *inst;
3894         MonoGenericContainer *container;
3895         MonoClass **constraints;
3896         int i;
3897
3898         memset (ctx, 0, sizeof (MonoGenericContext));
3899
3900         if (mono_class_is_gtd (method->klass)) {
3901                 shared_context = mono_class_get_generic_container (method->klass)->context;
3902                 inst = shared_context.class_inst;
3903
3904                 args = g_new0 (MonoType*, inst->type_argc);
3905                 for (i = 0; i < inst->type_argc; ++i) {
3906                         args [i] = &mono_defaults.int_class->byval_arg;
3907                 }
3908                 ctx->class_inst = mono_metadata_get_generic_inst (inst->type_argc, args);
3909         }
3910         if (method->is_generic) {
3911                 container = mono_method_get_generic_container (method);
3912                 shared_context = container->context;
3913                 inst = shared_context.method_inst;
3914
3915                 args = g_new0 (MonoType*, inst->type_argc);
3916                 for (i = 0; i < container->type_argc; ++i) {
3917                         MonoGenericParamInfo *info = &container->type_params [i].info;
3918                         gboolean ref_only = FALSE;
3919
3920                         if (info && info->constraints) {
3921                                 constraints = info->constraints;
3922
3923                                 while (*constraints) {
3924                                         MonoClass *cklass = *constraints;
3925                                         if (!(cklass == mono_defaults.object_class || (cklass->image == mono_defaults.corlib && !strcmp (cklass->name, "ValueType"))))
3926                                                 /* Inflaring the method with our vtype would not be valid */
3927                                                 ref_only = TRUE;
3928                                         constraints ++;
3929                                 }
3930                         }
3931
3932                         if (ref_only)
3933                                 args [i] = &mono_defaults.object_class->byval_arg;
3934                         else
3935                                 args [i] = &mono_defaults.int_class->byval_arg;
3936                 }
3937                 ctx->method_inst = mono_metadata_get_generic_inst (inst->type_argc, args);
3938         }
3939 }
3940
3941 static void
3942 add_wrappers (MonoAotCompile *acfg)
3943 {
3944         MonoMethod *method, *m;
3945         int i, j;
3946         MonoMethodSignature *sig, *csig;
3947         guint32 token;
3948
3949         /*
3950          * FIXME: Instead of AOTing all the wrappers, it might be better to redesign them
3951          * so there is only one wrapper of a given type, or inlining their contents into their
3952          * callers.
3953          */
3954         for (i = 0; i < acfg->image->tables [MONO_TABLE_METHOD].rows; ++i) {
3955                 ERROR_DECL (error);
3956                 MonoMethod *method;
3957                 guint32 token = MONO_TOKEN_METHOD_DEF | (i + 1);
3958                 gboolean skip = FALSE;
3959
3960                 method = mono_get_method_checked (acfg->image, token, NULL, NULL, error);
3961                 report_loader_error (acfg, error, TRUE, "Failed to load method token 0x%x due to %s\n", i, mono_error_get_message (error));
3962
3963                 if ((method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
3964                         (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
3965                         (method->flags & METHOD_ATTRIBUTE_ABSTRACT))
3966                         skip = TRUE;
3967
3968                 /* Skip methods which can not be handled by get_runtime_invoke () */
3969                 sig = mono_method_signature (method);
3970                 if (!sig)
3971                         continue;
3972                 if ((sig->ret->type == MONO_TYPE_PTR) ||
3973                         (sig->ret->type == MONO_TYPE_TYPEDBYREF))
3974                         skip = TRUE;
3975                 if (mono_class_is_open_constructed_type (sig->ret))
3976                         skip = TRUE;
3977
3978                 for (j = 0; j < sig->param_count; j++) {
3979                         if (sig->params [j]->type == MONO_TYPE_TYPEDBYREF)
3980                                 skip = TRUE;
3981                         if (mono_class_is_open_constructed_type (sig->params [j]))
3982                                 skip = TRUE;
3983                 }
3984
3985 #ifdef MONO_ARCH_DYN_CALL_SUPPORTED
3986                 if (!mono_class_is_contextbound (method->klass)) {
3987                         MonoDynCallInfo *info = mono_arch_dyn_call_prepare (sig);
3988                         gboolean has_nullable = FALSE;
3989
3990                         for (j = 0; j < sig->param_count; j++) {
3991                                 if (sig->params [j]->type == MONO_TYPE_GENERICINST && mono_class_is_nullable (mono_class_from_mono_type (sig->params [j])))
3992                                         has_nullable = TRUE;
3993                         }
3994
3995                         if (info && !has_nullable && !acfg->aot_opts.llvm_only) {
3996                                 /* Supported by the dynamic runtime-invoke wrapper */
3997                                 skip = TRUE;
3998                         }
3999                         if (info)
4000                                 mono_arch_dyn_call_free (info);
4001                 }
4002 #endif
4003
4004                 if (acfg->aot_opts.llvm_only)
4005                         /* Supported by the gsharedvt based runtime-invoke wrapper */
4006                         skip = TRUE;
4007
4008                 if (!skip) {
4009                         //printf ("%s\n", mono_method_full_name (method, TRUE));
4010                         add_method (acfg, get_runtime_invoke (acfg, method, FALSE));
4011                 }
4012         }
4013
4014         if (strcmp (acfg->image->assembly->aname.name, "mscorlib") == 0) {
4015                 int nallocators;
4016
4017                 /* Runtime invoke wrappers */
4018
4019                 /* void runtime-invoke () [.cctor] */
4020                 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 0);
4021                 csig->ret = &mono_defaults.void_class->byval_arg;
4022                 add_method (acfg, get_runtime_invoke_sig (csig));
4023
4024                 /* void runtime-invoke () [Finalize] */
4025                 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 0);
4026                 csig->hasthis = 1;
4027                 csig->ret = &mono_defaults.void_class->byval_arg;
4028                 add_method (acfg, get_runtime_invoke_sig (csig));
4029
4030                 /* void runtime-invoke (string) [exception ctor] */
4031                 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 1);
4032                 csig->hasthis = 1;
4033                 csig->ret = &mono_defaults.void_class->byval_arg;
4034                 csig->params [0] = &mono_defaults.string_class->byval_arg;
4035                 add_method (acfg, get_runtime_invoke_sig (csig));
4036
4037                 /* void runtime-invoke (string, string) [exception ctor] */
4038                 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 2);
4039                 csig->hasthis = 1;
4040                 csig->ret = &mono_defaults.void_class->byval_arg;
4041                 csig->params [0] = &mono_defaults.string_class->byval_arg;
4042                 csig->params [1] = &mono_defaults.string_class->byval_arg;
4043                 add_method (acfg, get_runtime_invoke_sig (csig));
4044
4045                 /* string runtime-invoke () [Exception.ToString ()] */
4046                 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 0);
4047                 csig->hasthis = 1;
4048                 csig->ret = &mono_defaults.string_class->byval_arg;
4049                 add_method (acfg, get_runtime_invoke_sig (csig));
4050
4051                 /* void runtime-invoke (string, Exception) [exception ctor] */
4052                 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 2);
4053                 csig->hasthis = 1;
4054                 csig->ret = &mono_defaults.void_class->byval_arg;
4055                 csig->params [0] = &mono_defaults.string_class->byval_arg;
4056                 csig->params [1] = &mono_defaults.exception_class->byval_arg;
4057                 add_method (acfg, get_runtime_invoke_sig (csig));
4058
4059                 /* Assembly runtime-invoke (string, Assembly, bool) [DoAssemblyResolve] */
4060                 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 3);
4061                 csig->hasthis = 1;
4062                 csig->ret = &(mono_class_load_from_name (
4063                                                                                         mono_defaults.corlib, "System.Reflection", "Assembly"))->byval_arg;
4064                 csig->params [0] = &mono_defaults.string_class->byval_arg;
4065                 csig->params [1] = &(mono_class_load_from_name (mono_defaults.corlib, "System.Reflection", "Assembly"))->byval_arg;
4066                 csig->params [2] = &mono_defaults.boolean_class->byval_arg;
4067                 add_method (acfg, get_runtime_invoke_sig (csig));
4068
4069                 /* runtime-invoke used by finalizers */
4070                 add_method (acfg, get_runtime_invoke (acfg, mono_class_get_method_from_name_flags (mono_defaults.object_class, "Finalize", 0, 0), TRUE));
4071
4072                 /* This is used by mono_runtime_capture_context () */
4073                 method = mono_get_context_capture_method ();
4074                 if (method)
4075                         add_method (acfg, get_runtime_invoke (acfg, method, FALSE));
4076
4077 #ifdef MONO_ARCH_DYN_CALL_SUPPORTED
4078                 if (!acfg->aot_opts.llvm_only)
4079                         add_method (acfg, mono_marshal_get_runtime_invoke_dynamic ());
4080 #endif
4081
4082                 /* These are used by mono_jit_runtime_invoke () to calls gsharedvt out wrappers */
4083                 if (acfg->aot_opts.llvm_only) {
4084                         int variants;
4085
4086                         /* Create simplified signatures which match the signature used by the gsharedvt out wrappers */
4087                         for (variants = 0; variants < 4; ++variants) {
4088                                 for (i = 0; i < 16; ++i) {
4089                                         sig = mini_get_gsharedvt_out_sig_wrapper_signature ((variants & 1) > 0, (variants & 2) > 0, i);
4090                                         add_extra_method (acfg, mono_marshal_get_runtime_invoke_for_sig (sig));
4091
4092                                         g_free (sig);
4093                                 }
4094                         }
4095                 }
4096
4097                 /* stelemref */
4098                 add_method (acfg, mono_marshal_get_stelemref ());
4099
4100                 /* Managed Allocators */
4101                 nallocators = mono_gc_get_managed_allocator_types ();
4102                 for (i = 0; i < nallocators; ++i) {
4103                         if ((m = mono_gc_get_managed_allocator_by_type (i, MANAGED_ALLOCATOR_REGULAR)))
4104                                 add_method (acfg, m);
4105                         if ((m = mono_gc_get_managed_allocator_by_type (i, MANAGED_ALLOCATOR_SLOW_PATH)))
4106                                 add_method (acfg, m);
4107                         if ((m = mono_gc_get_managed_allocator_by_type (i, MANAGED_ALLOCATOR_PROFILER)))
4108                                 add_method (acfg, m);
4109                 }
4110
4111                 /* write barriers */
4112                 if (mono_gc_is_moving ()) {
4113                         add_method (acfg, mono_gc_get_specific_write_barrier (FALSE));
4114                         add_method (acfg, mono_gc_get_specific_write_barrier (TRUE));
4115                 }
4116
4117                 /* Stelemref wrappers */
4118                 {
4119                         MonoMethod **wrappers;
4120                         int nwrappers;
4121
4122                         wrappers = mono_marshal_get_virtual_stelemref_wrappers (&nwrappers);
4123                         for (i = 0; i < nwrappers; ++i)
4124                                 add_method (acfg, wrappers [i]);
4125                         g_free (wrappers);
4126                 }
4127
4128                 /* castclass_with_check wrapper */
4129                 add_method (acfg, mono_marshal_get_castclass_with_cache ());
4130                 /* isinst_with_check wrapper */
4131                 add_method (acfg, mono_marshal_get_isinst_with_cache ());
4132
4133                 /* JIT icall wrappers */
4134                 /* FIXME: locking - this is "safe" as full-AOT threads don't mutate the icall hash*/
4135                 g_hash_table_foreach (mono_get_jit_icall_info (), add_jit_icall_wrapper, acfg);
4136         }
4137
4138         /*
4139          * remoting-invoke-with-check wrappers are very frequent, so avoid emitting them,
4140          * we use the original method instead at runtime.
4141          * Since full-aot doesn't support remoting, this is not a problem.
4142          */
4143 #if 0
4144         /* remoting-invoke wrappers */
4145         for (i = 0; i < acfg->image->tables [MONO_TABLE_METHOD].rows; ++i) {
4146                 ERROR_DECL (error);
4147                 MonoMethodSignature *sig;
4148
4149                 token = MONO_TOKEN_METHOD_DEF | (i + 1);
4150                 method = mono_get_method_checked (acfg->image, token, NULL, NULL, error);
4151                 g_assert (mono_error_ok (error)); /* FIXME don't swallow the error */
4152
4153                 sig = mono_method_signature (method);
4154
4155                 if (sig->hasthis && (method->klass->marshalbyref || method->klass == mono_defaults.object_class)) {
4156                         m = mono_marshal_get_remoting_invoke_with_check (method);
4157
4158                         add_method (acfg, m);
4159                 }
4160         }
4161 #endif
4162
4163         /* delegate-invoke wrappers */
4164         for (i = 0; i < acfg->image->tables [MONO_TABLE_TYPEDEF].rows; ++i) {
4165                 ERROR_DECL (error);
4166                 MonoClass *klass;
4167                 MonoCustomAttrInfo *cattr;
4168
4169                 token = MONO_TOKEN_TYPE_DEF | (i + 1);
4170                 klass = mono_class_get_checked (acfg->image, token, error);
4171
4172                 if (!klass) {
4173                         mono_error_cleanup (error);
4174                         continue;
4175                 }
4176
4177                 if (!klass->delegate || klass == mono_defaults.delegate_class || klass == mono_defaults.multicastdelegate_class)
4178                         continue;
4179
4180                 if (!mono_class_is_gtd (klass)) {
4181                         method = mono_get_delegate_invoke (klass);
4182
4183                         m = mono_marshal_get_delegate_invoke (method, NULL);
4184
4185                         add_method (acfg, m);
4186
4187                         method = mono_class_get_method_from_name_flags (klass, "BeginInvoke", -1, 0);
4188                         if (method)
4189                                 add_method (acfg, mono_marshal_get_delegate_begin_invoke (method));
4190
4191                         method = mono_class_get_method_from_name_flags (klass, "EndInvoke", -1, 0);
4192                         if (method)
4193                                 add_method (acfg, mono_marshal_get_delegate_end_invoke (method));
4194
4195                         cattr = mono_custom_attrs_from_class_checked (klass, error);
4196                         if (!is_ok (error)) {
4197                                 mono_error_cleanup (error);
4198                                 continue;
4199                         }
4200
4201                         if (cattr) {
4202                                 int j;
4203
4204                                 for (j = 0; j < cattr->num_attrs; ++j)
4205                                         if (cattr->attrs [j].ctor && (!strcmp (cattr->attrs [j].ctor->klass->name, "MonoNativeFunctionWrapperAttribute") || !strcmp (cattr->attrs [j].ctor->klass->name, "UnmanagedFunctionPointerAttribute")))
4206                                                 break;
4207                                 if (j < cattr->num_attrs) {
4208                                         MonoMethod *invoke;
4209                                         MonoMethod *wrapper;
4210                                         MonoMethod *del_invoke;
4211
4212                                         /* Add wrappers needed by mono_ftnptr_to_delegate () */
4213                                         invoke = mono_get_delegate_invoke (klass);
4214                                         wrapper = mono_marshal_get_native_func_wrapper_aot (klass);
4215                                         del_invoke = mono_marshal_get_delegate_invoke_internal (invoke, FALSE, TRUE, wrapper);
4216                                         add_method (acfg, wrapper);
4217                                         add_method (acfg, del_invoke);
4218                                 }
4219                         }
4220                 } else if ((acfg->opts & MONO_OPT_GSHAREDVT) && mono_class_is_gtd (klass)) {
4221                         ERROR_DECL (error);
4222                         MonoGenericContext ctx;
4223                         MonoMethod *inst, *gshared;
4224
4225                         /*
4226                          * Emit gsharedvt versions of the generic delegate-invoke wrappers
4227                          */
4228                         /* Invoke */
4229                         method = mono_get_delegate_invoke (klass);
4230                         create_gsharedvt_inst (acfg, method, &ctx);
4231
4232                         inst = mono_class_inflate_generic_method_checked (method, &ctx, error);
4233                         g_assert (mono_error_ok (error)); /* FIXME don't swallow the error */
4234
4235                         m = mono_marshal_get_delegate_invoke (inst, NULL);
4236                         g_assert (m->is_inflated);
4237
4238                         gshared = mini_get_shared_method_full (m, FALSE, TRUE);
4239                         add_extra_method (acfg, gshared);
4240
4241                         /* begin-invoke */
4242                         method = mono_get_delegate_begin_invoke (klass);
4243                         if (method) {
4244                                 create_gsharedvt_inst (acfg, method, &ctx);
4245
4246                                 inst = mono_class_inflate_generic_method_checked (method, &ctx, error);
4247                                 g_assert (mono_error_ok (error)); /* FIXME don't swallow the error */
4248
4249                                 m = mono_marshal_get_delegate_begin_invoke (inst);
4250                                 g_assert (m->is_inflated);
4251
4252                                 gshared = mini_get_shared_method_full (m, FALSE, TRUE);
4253                                 add_extra_method (acfg, gshared);
4254                         }
4255
4256                         /* end-invoke */
4257                         method = mono_get_delegate_end_invoke (klass);
4258                         if (method) {
4259                                 create_gsharedvt_inst (acfg, method, &ctx);
4260
4261                                 inst = mono_class_inflate_generic_method_checked (method, &ctx, error);
4262                                 g_assert (mono_error_ok (error)); /* FIXME don't swallow the error */
4263
4264                                 m = mono_marshal_get_delegate_end_invoke (inst);
4265                                 g_assert (m->is_inflated);
4266
4267                                 gshared = mini_get_shared_method_full (m, FALSE, TRUE);
4268                                 add_extra_method (acfg, gshared);
4269                         }
4270                 }
4271         }
4272
4273         /* array access wrappers */
4274         for (i = 0; i < acfg->image->tables [MONO_TABLE_TYPESPEC].rows; ++i) {
4275                 ERROR_DECL (error);
4276                 MonoClass *klass;
4277
4278                 token = MONO_TOKEN_TYPE_SPEC | (i + 1);
4279                 klass = mono_class_get_checked (acfg->image, token, error);
4280
4281                 if (!klass) {
4282                         mono_error_cleanup (error);
4283                         continue;
4284                 }
4285
4286                 if (klass->rank && MONO_TYPE_IS_PRIMITIVE (&klass->element_class->byval_arg)) {
4287                         MonoMethod *m, *wrapper;
4288
4289                         /* Add runtime-invoke wrappers too */
4290
4291                         m = mono_class_get_method_from_name (klass, "Get", -1);
4292                         g_assert (m);
4293                         wrapper = mono_marshal_get_array_accessor_wrapper (m);
4294                         add_extra_method (acfg, wrapper);
4295                         if (!acfg->aot_opts.llvm_only)
4296                                 add_extra_method (acfg, get_runtime_invoke (acfg, wrapper, FALSE));
4297
4298                         m = mono_class_get_method_from_name (klass, "Set", -1);
4299                         g_assert (m);
4300                         wrapper = mono_marshal_get_array_accessor_wrapper (m);
4301                         add_extra_method (acfg, wrapper);
4302                         if (!acfg->aot_opts.llvm_only)
4303                                 add_extra_method (acfg, get_runtime_invoke (acfg, wrapper, FALSE));
4304                 }
4305         }
4306
4307         /* Synchronized wrappers */
4308         for (i = 0; i < acfg->image->tables [MONO_TABLE_METHOD].rows; ++i) {
4309                 ERROR_DECL (error);
4310                 token = MONO_TOKEN_METHOD_DEF | (i + 1);
4311                 method = mono_get_method_checked (acfg->image, token, NULL, NULL, error);
4312                 report_loader_error (acfg, error, TRUE, "Failed to load method token 0x%x due to %s\n", i, mono_error_get_message (error));
4313
4314                 if (method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) {
4315                         if (method->is_generic) {
4316                                 // FIXME:
4317                         } else if ((acfg->opts & MONO_OPT_GSHAREDVT) && mono_class_is_gtd (method->klass)) {
4318                                 ERROR_DECL (error);
4319                                 MonoGenericContext ctx;
4320                                 MonoMethod *inst, *gshared, *m;
4321
4322                                 /*
4323                                  * Create a generic wrapper for a generic instance, and AOT that.
4324                                  */
4325                                 create_gsharedvt_inst (acfg, method, &ctx);
4326                                 inst = mono_class_inflate_generic_method_checked (method, &ctx, error);
4327                                 g_assert (mono_error_ok (error)); /* FIXME don't swallow the error */
4328                                 m = mono_marshal_get_synchronized_wrapper (inst);
4329                                 g_assert (m->is_inflated);
4330                                 gshared = mini_get_shared_method_full (m, FALSE, TRUE);
4331                                 add_method (acfg, gshared);
4332                         } else {
4333                                 add_method (acfg, mono_marshal_get_synchronized_wrapper (method));
4334                         }
4335                 }
4336         }
4337
4338         /* pinvoke wrappers */
4339         for (i = 0; i < acfg->image->tables [MONO_TABLE_METHOD].rows; ++i) {
4340                 ERROR_DECL (error);
4341                 MonoMethod *method;
4342                 guint32 token = MONO_TOKEN_METHOD_DEF | (i + 1);
4343
4344                 method = mono_get_method_checked (acfg->image, token, NULL, NULL, error);
4345                 report_loader_error (acfg, error, TRUE, "Failed to load method token 0x%x due to %s\n", i, mono_error_get_message (error));
4346
4347                 if ((method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
4348                         (method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL)) {
4349                         add_method (acfg, mono_marshal_get_native_wrapper (method, TRUE, TRUE));
4350                 }
4351
4352                 if (method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) {
4353                         if (acfg->aot_opts.llvm_only) {
4354                                 /* The wrappers have a different signature (hasthis is not set) so need to add this too */
4355                                 add_gsharedvt_wrappers (acfg, mono_method_signature (method), FALSE, TRUE);
4356                         }
4357                 }
4358         }
4359
4360         /* native-to-managed wrappers */
4361         for (i = 0; i < acfg->image->tables [MONO_TABLE_METHOD].rows; ++i) {
4362                 ERROR_DECL (error);
4363                 MonoMethod *method;
4364                 guint32 token = MONO_TOKEN_METHOD_DEF | (i + 1);
4365                 MonoCustomAttrInfo *cattr;
4366                 int j;
4367
4368                 method = mono_get_method_checked (acfg->image, token, NULL, NULL, error);
4369                 report_loader_error (acfg, error, TRUE, "Failed to load method token 0x%x due to %s\n", i, mono_error_get_message (error));
4370
4371                 /*
4372                  * Only generate native-to-managed wrappers for methods which have an
4373                  * attribute named MonoPInvokeCallbackAttribute. We search for the attribute by
4374                  * name to avoid defining a new assembly to contain it.
4375                  */
4376                 cattr = mono_custom_attrs_from_method_checked (method, error);
4377                 if (!is_ok (error)) {
4378                         char *name = mono_method_get_full_name (method);
4379                         report_loader_error (acfg, error, TRUE, "Failed to load custom attributes from method %s due to %s\n", name, mono_error_get_message (error));
4380                         g_free (name);
4381                 }
4382
4383                 if (cattr) {
4384                         for (j = 0; j < cattr->num_attrs; ++j)
4385                                 if (cattr->attrs [j].ctor && !strcmp (cattr->attrs [j].ctor->klass->name, "MonoPInvokeCallbackAttribute"))
4386                                         break;
4387                         if (j < cattr->num_attrs) {
4388                                 MonoCustomAttrEntry *e = &cattr->attrs [j];
4389                                 MonoMethodSignature *sig = mono_method_signature (e->ctor);
4390                                 const char *p = (const char*)e->data;
4391                                 const char *named;
4392                                 int slen, num_named, named_type;
4393                                 char *n;
4394                                 MonoType *t;
4395                                 MonoClass *klass;
4396                                 char *export_name = NULL;
4397                                 MonoMethod *wrapper;
4398
4399                                 /* this cannot be enforced by the C# compiler so we must give the user some warning before aborting */
4400                                 if (!(method->flags & METHOD_ATTRIBUTE_STATIC)) {
4401                                         g_warning ("AOT restriction: Method '%s' must be static since it is decorated with [MonoPInvokeCallback]. See http://ios.xamarin.com/Documentation/Limitations#Reverse_Callbacks",
4402                                                 mono_method_full_name (method, TRUE));
4403                                         exit (1);
4404                                 }
4405
4406                                 g_assert (sig->param_count == 1);
4407                                 g_assert (sig->params [0]->type == MONO_TYPE_CLASS && !strcmp (mono_class_from_mono_type (sig->params [0])->name, "Type"));
4408
4409                                 /*
4410                                  * Decode the cattr manually since we can't create objects
4411                                  * during aot compilation.
4412                                  */
4413
4414                                 /* Skip prolog */
4415                                 p += 2;
4416
4417                                 /* From load_cattr_value () in reflection.c */
4418                                 slen = mono_metadata_decode_value (p, &p);
4419                                 n = (char *)g_memdup (p, slen + 1);
4420                                 n [slen] = 0;
4421                                 t = mono_reflection_type_from_name_checked (n, acfg->image, error);
4422                                 g_assert (t);
4423                                 mono_error_assert_ok (error);
4424                                 g_free (n);
4425
4426                                 klass = mono_class_from_mono_type (t);
4427                                 g_assert (klass->parent == mono_defaults.multicastdelegate_class);
4428
4429                                 p += slen;
4430
4431                                 num_named = read16 (p);
4432                                 p += 2;
4433
4434                                 g_assert (num_named < 2);
4435                                 if (num_named == 1) {
4436                                         int name_len;
4437                                         char *name;
4438
4439                                         /* parse ExportSymbol attribute */
4440                                         named = p;
4441                                         named_type = *named;
4442                                         named += 1;
4443                                         /* data_type = *named; */
4444                                         named += 1;
4445
4446                                         name_len = mono_metadata_decode_blob_size (named, &named);
4447                                         name = (char *)g_malloc (name_len + 1);
4448                                         memcpy (name, named, name_len);
4449                                         name [name_len] = 0;
4450                                         named += name_len;
4451
4452                                         g_assert (named_type == 0x54);
4453                                         g_assert (!strcmp (name, "ExportSymbol"));
4454
4455                                         /* load_cattr_value (), string case */
4456                                         g_assert (*named != (char)0xff);
4457                                         slen = mono_metadata_decode_value (named, &named);
4458                                         export_name = (char *)g_malloc (slen + 1);
4459                                         memcpy (export_name, named, slen);
4460                                         export_name [slen] = 0;
4461                                         named += slen;
4462                                 }
4463
4464                                 wrapper = mono_marshal_get_managed_wrapper (method, klass, 0, error);
4465                                 mono_error_assert_ok (error);
4466
4467                                 add_method (acfg, wrapper);
4468                                 if (export_name)
4469                                         g_hash_table_insert (acfg->export_names, wrapper, export_name);
4470                         }
4471                         g_free (cattr);
4472                 }
4473
4474                 if ((method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
4475                         (method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL)) {
4476                         add_method (acfg, mono_marshal_get_native_wrapper (method, TRUE, TRUE));
4477                 }
4478         }
4479
4480         /* StructureToPtr/PtrToStructure wrappers */
4481         for (i = 0; i < acfg->image->tables [MONO_TABLE_TYPEDEF].rows; ++i) {
4482                 ERROR_DECL (error);
4483                 MonoClass *klass;
4484
4485                 token = MONO_TOKEN_TYPE_DEF | (i + 1);
4486                 klass = mono_class_get_checked (acfg->image, token, error);
4487
4488                 if (!klass) {
4489                         mono_error_cleanup (error);
4490                         continue;
4491                 }
4492
4493                 if (klass->valuetype && !mono_class_is_gtd (klass) && can_marshal_struct (klass) &&
4494                         !(klass->nested_in && strstr (klass->nested_in->name, "<PrivateImplementationDetails>") == klass->nested_in->name)) {
4495                         add_method (acfg, mono_marshal_get_struct_to_ptr (klass));
4496                         add_method (acfg, mono_marshal_get_ptr_to_struct (klass));
4497                 }
4498         }
4499 }
4500
4501 static gboolean
4502 has_type_vars (MonoClass *klass)
4503 {
4504         if ((klass->byval_arg.type == MONO_TYPE_VAR) || (klass->byval_arg.type == MONO_TYPE_MVAR))
4505                 return TRUE;
4506         if (klass->rank)
4507                 return has_type_vars (klass->element_class);
4508         if (mono_class_is_ginst (klass)) {
4509                 MonoGenericContext *context = &mono_class_get_generic_class (klass)->context;
4510                 if (context->class_inst) {
4511                         int i;
4512
4513                         for (i = 0; i < context->class_inst->type_argc; ++i)
4514                                 if (has_type_vars (mono_class_from_mono_type (context->class_inst->type_argv [i])))
4515                                         return TRUE;
4516                 }
4517         }
4518         if (mono_class_is_gtd (klass))
4519                 return TRUE;
4520         return FALSE;
4521 }
4522
4523 static gboolean
4524 is_vt_inst (MonoGenericInst *inst)
4525 {
4526         int i;
4527
4528         for (i = 0; i < inst->type_argc; ++i) {
4529                 MonoType *t = inst->type_argv [i];
4530                 if (MONO_TYPE_ISSTRUCT (t) || t->type == MONO_TYPE_VALUETYPE)
4531                         return TRUE;
4532         }
4533         return FALSE;
4534 }
4535
4536 static gboolean
4537 method_has_type_vars (MonoMethod *method)
4538 {
4539         if (has_type_vars (method->klass))
4540                 return TRUE;
4541
4542         if (method->is_inflated) {
4543                 MonoGenericContext *context = mono_method_get_context (method);
4544                 if (context->method_inst) {
4545                         int i;
4546
4547                         for (i = 0; i < context->method_inst->type_argc; ++i)
4548                                 if (has_type_vars (mono_class_from_mono_type (context->method_inst->type_argv [i])))
4549                                         return TRUE;
4550                 }
4551         }
4552         return FALSE;
4553 }
4554
4555 static
4556 gboolean mono_aot_mode_is_full (MonoAotOptions *opts)
4557 {
4558         return opts->mode == MONO_AOT_MODE_FULL || opts->mode == MONO_AOT_MODE_INTERP;
4559 }
4560
4561 static
4562 gboolean mono_aot_mode_is_interp (MonoAotOptions *opts)
4563 {
4564         return opts->mode == MONO_AOT_MODE_INTERP;
4565 }
4566
4567 static
4568 gboolean mono_aot_mode_is_hybrid (MonoAotOptions *opts)
4569 {
4570         return opts->mode == MONO_AOT_MODE_HYBRID;
4571 }
4572
4573 static void add_generic_class_with_depth (MonoAotCompile *acfg, MonoClass *klass, int depth, const char *ref);
4574
4575 static void
4576 add_generic_class (MonoAotCompile *acfg, MonoClass *klass, gboolean force, const char *ref)
4577 {
4578         /* This might lead to a huge code blowup so only do it if neccesary */
4579         if (!mono_aot_mode_is_full (&acfg->aot_opts) && !mono_aot_mode_is_hybrid (&acfg->aot_opts) && !force)
4580                 return;
4581
4582         add_generic_class_with_depth (acfg, klass, 0, ref);
4583 }
4584
4585 static gboolean
4586 check_type_depth (MonoType *t, int depth)
4587 {
4588         int i;
4589
4590         if (depth > 8)
4591                 return TRUE;
4592
4593         switch (t->type) {
4594         case MONO_TYPE_GENERICINST: {
4595                 MonoGenericClass *gklass = t->data.generic_class;
4596                 MonoGenericInst *ginst = gklass->context.class_inst;
4597
4598                 if (ginst) {
4599                         for (i = 0; i < ginst->type_argc; ++i) {
4600                                 if (check_type_depth (ginst->type_argv [i], depth + 1))
4601                                         return TRUE;
4602                         }
4603                 }
4604                 break;
4605         }
4606         default:
4607                 break;
4608         }
4609
4610         return FALSE;
4611 }
4612
4613 static void
4614 add_types_from_method_header (MonoAotCompile *acfg, MonoMethod *method);
4615
4616 /*
4617  * add_generic_class:
4618  *
4619  *   Add all methods of a generic class.
4620  */
4621 static void
4622 add_generic_class_with_depth (MonoAotCompile *acfg, MonoClass *klass, int depth, const char *ref)
4623 {
4624         MonoMethod *method;
4625         MonoClassField *field;
4626         gpointer iter;
4627         gboolean use_gsharedvt = FALSE;
4628
4629         if (!acfg->ginst_hash)
4630                 acfg->ginst_hash = g_hash_table_new (NULL, NULL);
4631
4632         mono_class_init (klass);
4633
4634         if (mono_class_is_ginst (klass) && mono_class_get_generic_class (klass)->context.class_inst->is_open)
4635                 return;
4636
4637         if (has_type_vars (klass))
4638                 return;
4639
4640         if (!mono_class_is_ginst (klass) && !klass->rank)
4641                 return;
4642
4643         if (mono_class_has_failure (klass))
4644                 return;
4645
4646         if (!acfg->ginst_hash)
4647                 acfg->ginst_hash = g_hash_table_new (NULL, NULL);
4648
4649         if (g_hash_table_lookup (acfg->ginst_hash, klass))
4650                 return;
4651
4652         if (check_type_depth (&klass->byval_arg, 0))
4653                 return;
4654
4655         if (acfg->aot_opts.log_generics)
4656                 aot_printf (acfg, "%*sAdding generic instance %s [%s].\n", depth, "", mono_type_full_name (&klass->byval_arg), ref);
4657
4658         g_hash_table_insert (acfg->ginst_hash, klass, klass);
4659
4660         /*
4661          * Use gsharedvt for generic collections with vtype arguments to avoid code blowup.
4662          * Enable this only for some classes since gsharedvt might not support all methods.
4663          */
4664         if ((acfg->opts & MONO_OPT_GSHAREDVT) && klass->image == 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) &&
4665                 (!strcmp (klass->name, "Dictionary`2") || !strcmp (klass->name, "List`1") || !strcmp (klass->name, "ReadOnlyCollection`1")))
4666                 use_gsharedvt = TRUE;
4667
4668         iter = NULL;
4669         while ((method = mono_class_get_methods (klass, &iter))) {
4670                 if ((acfg->opts & MONO_OPT_GSHAREDVT) && method->is_inflated && mono_method_get_context (method)->method_inst) {
4671                         /*
4672                          * This is partial sharing, and we can't handle it yet
4673                          */
4674                         continue;
4675                 }
4676
4677                 if (mono_method_is_generic_sharable_full (method, FALSE, FALSE, use_gsharedvt)) {
4678                         /* Already added */
4679                         add_types_from_method_header (acfg, method);
4680                         continue;
4681                 }
4682
4683                 if (method->is_generic)
4684                         /* FIXME: */
4685                         continue;
4686
4687                 /*
4688                  * FIXME: Instances which are referenced by these methods are not added,
4689                  * for example Array.Resize<int> for List<int>.Add ().
4690                  */
4691                 add_extra_method_with_depth (acfg, method, depth + 1);
4692         }
4693
4694         iter = NULL;
4695         while ((field = mono_class_get_fields (klass, &iter))) {
4696                 if (field->type->type == MONO_TYPE_GENERICINST)
4697                         add_generic_class_with_depth (acfg, mono_class_from_mono_type (field->type), depth + 1, "field");
4698         }
4699
4700         if (klass->delegate) {
4701                 method = mono_get_delegate_invoke (klass);
4702
4703                 method = mono_marshal_get_delegate_invoke (method, NULL);
4704
4705                 if (acfg->aot_opts.log_generics)
4706                         aot_printf (acfg, "%*sAdding method %s.\n", depth, "", mono_method_get_full_name (method));
4707
4708                 add_method (acfg, method);
4709         }
4710
4711         /* Add superclasses */
4712         if (klass->parent)
4713                 add_generic_class_with_depth (acfg, klass->parent, depth, "parent");
4714
4715         /*
4716          * For ICollection<T>, add instances of the helper methods
4717          * in Array, since a T[] could be cast to ICollection<T>.
4718          */
4719         if (klass->image == mono_defaults.corlib && !strcmp (klass->name_space, "System.Collections.Generic") &&
4720                 (!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"))) {
4721                 MonoClass *tclass = mono_class_from_mono_type (mono_class_get_generic_class (klass)->context.class_inst->type_argv [0]);
4722                 MonoClass *array_class = mono_class_create_bounded_array (tclass, 1, FALSE);
4723                 gpointer iter;
4724                 char *name_prefix;
4725
4726                 if (!strcmp (klass->name, "IEnumerator`1"))
4727                         name_prefix = g_strdup_printf ("%s.%s", klass->name_space, "IEnumerable`1");
4728                 else
4729                         name_prefix = g_strdup_printf ("%s.%s", klass->name_space, klass->name);
4730
4731                 /* Add the T[]/InternalEnumerator class */
4732                 if (!strcmp (klass->name, "IEnumerable`1") || !strcmp (klass->name, "IEnumerator`1")) {
4733                         ERROR_DECL (error);
4734                         MonoClass *nclass;
4735
4736                         iter = NULL;
4737                         while ((nclass = mono_class_get_nested_types (array_class->parent, &iter))) {
4738                                 if (!strcmp (nclass->name, "InternalEnumerator`1"))
4739                                         break;
4740                         }
4741                         g_assert (nclass);
4742                         nclass = mono_class_inflate_generic_class_checked (nclass, mono_generic_class_get_context (mono_class_get_generic_class (klass)), error);
4743                         mono_error_assert_ok (error); /* FIXME don't swallow the error */
4744                         add_generic_class (acfg, nclass, FALSE, "ICollection<T>");
4745                 }
4746
4747                 iter = NULL;
4748                 while ((method = mono_class_get_methods (array_class, &iter))) {
4749                         if (strstr (method->name, name_prefix)) {
4750                                 MonoMethod *m = mono_aot_get_array_helper_from_wrapper (method);
4751
4752                                 add_extra_method_with_depth (acfg, m, depth);
4753                         }
4754                 }
4755
4756                 g_free (name_prefix);
4757         }
4758
4759         /* Add an instance of GenericComparer<T> which is created dynamically by Comparer<T> */
4760         if (klass->image == mono_defaults.corlib && !strcmp (klass->name_space, "System.Collections.Generic") && !strcmp (klass->name, "Comparer`1")) {
4761                 ERROR_DECL (error);
4762                 MonoClass *tclass = mono_class_from_mono_type (mono_class_get_generic_class (klass)->context.class_inst->type_argv [0]);
4763                 MonoClass *icomparable, *gcomparer, *icomparable_inst;
4764                 MonoGenericContext ctx;
4765                 MonoType *args [16];
4766
4767                 memset (&ctx, 0, sizeof (ctx));
4768
4769                 icomparable = mono_class_load_from_name (mono_defaults.corlib, "System", "IComparable`1");
4770
4771                 args [0] = &tclass->byval_arg;
4772                 ctx.class_inst = mono_metadata_get_generic_inst (1, args);
4773
4774                 icomparable_inst = mono_class_inflate_generic_class_checked (icomparable, &ctx, error);
4775                 mono_error_assert_ok (error); /* FIXME don't swallow the error */
4776
4777                 if (mono_class_is_assignable_from (icomparable_inst, tclass)) {
4778                         MonoClass *gcomparer_inst;
4779                         gcomparer = mono_class_load_from_name (mono_defaults.corlib, "System.Collections.Generic", "GenericComparer`1");
4780                         gcomparer_inst = mono_class_inflate_generic_class_checked (gcomparer, &ctx, error);
4781                         mono_error_assert_ok (error); /* FIXME don't swallow the error */
4782
4783                         add_generic_class (acfg, gcomparer_inst, FALSE, "Comparer<T>");
4784                 }
4785         }
4786
4787         /* Add an instance of GenericEqualityComparer<T> which is created dynamically by EqualityComparer<T> */
4788         if (klass->image == mono_defaults.corlib && !strcmp (klass->name_space, "System.Collections.Generic") && !strcmp (klass->name, "EqualityComparer`1")) {
4789                 ERROR_DECL (error);
4790                 MonoClass *tclass = mono_class_from_mono_type (mono_class_get_generic_class (klass)->context.class_inst->type_argv [0]);
4791                 MonoClass *iface, *gcomparer, *iface_inst;
4792                 MonoGenericContext ctx;
4793                 MonoType *args [16];
4794
4795                 memset (&ctx, 0, sizeof (ctx));
4796
4797                 iface = mono_class_load_from_name (mono_defaults.corlib, "System", "IEquatable`1");
4798                 g_assert (iface);
4799                 args [0] = &tclass->byval_arg;
4800                 ctx.class_inst = mono_metadata_get_generic_inst (1, args);
4801
4802                 iface_inst = mono_class_inflate_generic_class_checked (iface, &ctx, error);
4803                 mono_error_assert_ok (error); /* FIXME don't swallow the error */
4804
4805                 if (mono_class_is_assignable_from (iface_inst, tclass)) {
4806                         MonoClass *gcomparer_inst;
4807                         ERROR_DECL (error);
4808
4809                         gcomparer = mono_class_load_from_name (mono_defaults.corlib, "System.Collections.Generic", "GenericEqualityComparer`1");
4810                         gcomparer_inst = mono_class_inflate_generic_class_checked (gcomparer, &ctx, error);
4811                         mono_error_assert_ok (error); /* FIXME don't swallow the error */
4812                         add_generic_class (acfg, gcomparer_inst, FALSE, "EqualityComparer<T>");
4813                 }
4814         }
4815
4816         /* Add an instance of EnumComparer<T> which is created dynamically by EqualityComparer<T> for enums */
4817         if (klass->image == mono_defaults.corlib && !strcmp (klass->name_space, "System.Collections.Generic") && !strcmp (klass->name, "EqualityComparer`1")) {
4818                 MonoClass *enum_comparer;
4819                 MonoClass *tclass = mono_class_from_mono_type (mono_class_get_generic_class (klass)->context.class_inst->type_argv [0]);
4820                 MonoGenericContext ctx;
4821                 MonoType *args [16];
4822
4823                 if (mono_class_is_enum (tclass)) {
4824                         MonoClass *enum_comparer_inst;
4825                         ERROR_DECL (error);
4826
4827                         memset (&ctx, 0, sizeof (ctx));
4828                         args [0] = &tclass->byval_arg;
4829                         ctx.class_inst = mono_metadata_get_generic_inst (1, args);
4830
4831                         enum_comparer = mono_class_load_from_name (mono_defaults.corlib, "System.Collections.Generic", "EnumEqualityComparer`1");
4832                         enum_comparer_inst = mono_class_inflate_generic_class_checked (enum_comparer, &ctx, error);
4833                         mono_error_assert_ok (error); /* FIXME don't swallow the error */
4834                         add_generic_class (acfg, enum_comparer_inst, FALSE, "EqualityComparer<T>");
4835                 }
4836         }
4837
4838         /* Add an instance of ObjectComparer<T> which is created dynamically by Comparer<T> for enums */
4839         if (klass->image == mono_defaults.corlib && !strcmp (klass->name_space, "System.Collections.Generic") && !strcmp (klass->name, "Comparer`1")) {
4840                 MonoClass *comparer;
4841                 MonoClass *tclass = mono_class_from_mono_type (mono_class_get_generic_class (klass)->context.class_inst->type_argv [0]);
4842                 MonoGenericContext ctx;
4843                 MonoType *args [16];
4844
4845                 if (mono_class_is_enum (tclass)) {
4846                         MonoClass *comparer_inst;
4847                         ERROR_DECL (error);
4848
4849                         memset (&ctx, 0, sizeof (ctx));
4850                         args [0] = &tclass->byval_arg;
4851                         ctx.class_inst = mono_metadata_get_generic_inst (1, args);
4852
4853                         comparer = mono_class_load_from_name (mono_defaults.corlib, "System.Collections.Generic", "ObjectComparer`1");
4854                         comparer_inst = mono_class_inflate_generic_class_checked (comparer, &ctx, error);
4855                         mono_error_assert_ok (error); /* FIXME don't swallow the error */
4856                         add_generic_class (acfg, comparer_inst, FALSE, "Comparer<T>");
4857                 }
4858         }
4859 }
4860
4861 static void
4862 add_instances_of (MonoAotCompile *acfg, MonoClass *klass, MonoType **insts, int ninsts, gboolean force)
4863 {
4864         int i;
4865         MonoGenericContext ctx;
4866         MonoType *args [16];
4867
4868         if (acfg->aot_opts.no_instances)
4869                 return;
4870
4871         memset (&ctx, 0, sizeof (ctx));
4872
4873         for (i = 0; i < ninsts; ++i) {
4874                 ERROR_DECL (error);
4875                 MonoClass *generic_inst;
4876                 args [0] = insts [i];
4877                 ctx.class_inst = mono_metadata_get_generic_inst (1, args);
4878                 generic_inst = mono_class_inflate_generic_class_checked (klass, &ctx, error);
4879                 mono_error_assert_ok (error); /* FIXME don't swallow the error */
4880                 add_generic_class (acfg, generic_inst, force, "");
4881         }
4882 }
4883
4884 static void
4885 add_types_from_method_header (MonoAotCompile *acfg, MonoMethod *method)
4886 {
4887         ERROR_DECL (error);
4888         MonoMethodHeader *header;
4889         MonoMethodSignature *sig;
4890         int j, depth;
4891
4892         depth = GPOINTER_TO_UINT (g_hash_table_lookup (acfg->method_depth, method));
4893
4894         sig = mono_method_signature (method);
4895
4896         if (sig) {
4897                 for (j = 0; j < sig->param_count; ++j)
4898                         if (sig->params [j]->type == MONO_TYPE_GENERICINST)
4899                                 add_generic_class_with_depth (acfg, mono_class_from_mono_type (sig->params [j]), depth + 1, "arg");
4900         }
4901
4902         header = mono_method_get_header_checked (method, error);
4903
4904         if (header) {
4905                 for (j = 0; j < header->num_locals; ++j)
4906                         if (header->locals [j]->type == MONO_TYPE_GENERICINST)
4907                                 add_generic_class_with_depth (acfg, mono_class_from_mono_type (header->locals [j]), depth + 1, "local");
4908                 mono_metadata_free_mh (header);
4909         } else {
4910                 mono_error_cleanup (error); /* FIXME report the error */
4911         }
4912
4913 }
4914
4915 /*
4916  * add_generic_instances:
4917  *
4918  *   Add instances referenced by the METHODSPEC/TYPESPEC table.
4919  */
4920 static void
4921 add_generic_instances (MonoAotCompile *acfg)
4922 {
4923         int i;
4924         guint32 token;
4925         MonoMethod *method;
4926         MonoGenericContext *context;
4927
4928         if (acfg->aot_opts.no_instances)
4929                 return;
4930
4931         for (i = 0; i < acfg->image->tables [MONO_TABLE_METHODSPEC].rows; ++i) {
4932                 ERROR_DECL (error);
4933                 token = MONO_TOKEN_METHOD_SPEC | (i + 1);
4934                 method = mono_get_method_checked (acfg->image, token, NULL, NULL, error);
4935
4936                 if (!method) {
4937                         aot_printerrf (acfg, "Failed to load methodspec 0x%x due to %s.\n", token, mono_error_get_message (error));
4938                         aot_printerrf (acfg, "Run with MONO_LOG_LEVEL=debug for more information.\n");
4939                         mono_error_cleanup (error);
4940                         continue;
4941                 }
4942
4943                 if (method->klass->image != acfg->image)
4944                         continue;
4945
4946                 context = mono_method_get_context (method);
4947
4948                 if (context && ((context->class_inst && context->class_inst->is_open)))
4949                         continue;
4950
4951                 /*
4952                  * For open methods, create an instantiation which can be passed to the JIT.
4953                  * FIXME: Handle class_inst as well.
4954                  */
4955                 if (context && context->method_inst && context->method_inst->is_open) {
4956                         ERROR_DECL (error);
4957                         MonoGenericContext shared_context;
4958                         MonoGenericInst *inst;
4959                         MonoType **type_argv;
4960                         int i;
4961                         MonoMethod *declaring_method;
4962                         gboolean supported = TRUE;
4963
4964                         /* Check that the context doesn't contain open constructed types */
4965                         if (context->class_inst) {
4966                                 inst = context->class_inst;
4967                                 for (i = 0; i < inst->type_argc; ++i) {
4968                                         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)
4969                                                 continue;
4970                                         if (mono_class_is_open_constructed_type (inst->type_argv [i]))
4971                                                 supported = FALSE;
4972                                 }
4973                         }
4974                         if (context->method_inst) {
4975                                 inst = context->method_inst;
4976                                 for (i = 0; i < inst->type_argc; ++i) {
4977                                         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)
4978                                                 continue;
4979                                         if (mono_class_is_open_constructed_type (inst->type_argv [i]))
4980                                                 supported = FALSE;
4981                                 }
4982                         }
4983
4984                         if (!supported)
4985                                 continue;
4986
4987                         memset (&shared_context, 0, sizeof (MonoGenericContext));
4988
4989                         inst = context->class_inst;
4990                         if (inst) {
4991                                 type_argv = g_new0 (MonoType*, inst->type_argc);
4992                                 for (i = 0; i < inst->type_argc; ++i) {
4993                                         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)
4994                                                 type_argv [i] = &mono_defaults.object_class->byval_arg;
4995                                         else
4996                                                 type_argv [i] = inst->type_argv [i];
4997                                 }
4998
4999                                 shared_context.class_inst = mono_metadata_get_generic_inst (inst->type_argc, type_argv);
5000                                 g_free (type_argv);
5001                         }
5002
5003                         inst = context->method_inst;
5004                         if (inst) {
5005                                 type_argv = g_new0 (MonoType*, inst->type_argc);
5006                                 for (i = 0; i < inst->type_argc; ++i) {
5007                                         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)
5008                                                 type_argv [i] = &mono_defaults.object_class->byval_arg;
5009                                         else
5010                                                 type_argv [i] = inst->type_argv [i];
5011                                 }
5012
5013                                 shared_context.method_inst = mono_metadata_get_generic_inst (inst->type_argc, type_argv);
5014                                 g_free (type_argv);
5015                         }
5016
5017                         if (method->is_generic || mono_class_is_gtd (method->klass))
5018                                 declaring_method = method;
5019                         else
5020                                 declaring_method = mono_method_get_declaring_generic_method (method);
5021
5022                         method = mono_class_inflate_generic_method_checked (declaring_method, &shared_context, error);
5023                         g_assert (mono_error_ok (error)); /* FIXME don't swallow the error */
5024                 }
5025
5026                 /*
5027                  * If the method is fully sharable, it was already added in place of its
5028                  * generic definition.
5029                  */
5030                 if (mono_method_is_generic_sharable_full (method, FALSE, FALSE, FALSE))
5031                         continue;
5032
5033                 /*
5034                  * FIXME: Partially shared methods are not shared here, so we end up with
5035                  * many identical methods.
5036                  */
5037                 add_extra_method (acfg, method);
5038         }
5039
5040         for (i = 0; i < acfg->image->tables [MONO_TABLE_TYPESPEC].rows; ++i) {
5041                 ERROR_DECL (error);
5042                 MonoClass *klass;
5043
5044                 token = MONO_TOKEN_TYPE_SPEC | (i + 1);
5045
5046                 klass = mono_class_get_checked (acfg->image, token, error);
5047                 if (!klass || klass->rank) {
5048                         mono_error_cleanup (error);
5049                         continue;
5050                 }
5051
5052                 add_generic_class (acfg, klass, FALSE, "typespec");
5053         }
5054
5055         /* Add types of args/locals */
5056         for (i = 0; i < acfg->methods->len; ++i) {
5057                 method = (MonoMethod *)g_ptr_array_index (acfg->methods, i);
5058                 add_types_from_method_header (acfg, method);
5059         }
5060
5061         if (acfg->image == mono_defaults.corlib) {
5062                 MonoClass *klass;
5063                 MonoType *insts [256];
5064                 int ninsts = 0;
5065
5066                 insts [ninsts ++] = &mono_defaults.byte_class->byval_arg;
5067                 insts [ninsts ++] = &mono_defaults.sbyte_class->byval_arg;
5068                 insts [ninsts ++] = &mono_defaults.int16_class->byval_arg;
5069                 insts [ninsts ++] = &mono_defaults.uint16_class->byval_arg;
5070                 insts [ninsts ++] = &mono_defaults.int32_class->byval_arg;
5071                 insts [ninsts ++] = &mono_defaults.uint32_class->byval_arg;
5072                 insts [ninsts ++] = &mono_defaults.int64_class->byval_arg;
5073                 insts [ninsts ++] = &mono_defaults.uint64_class->byval_arg;
5074                 insts [ninsts ++] = &mono_defaults.single_class->byval_arg;
5075                 insts [ninsts ++] = &mono_defaults.double_class->byval_arg;
5076                 insts [ninsts ++] = &mono_defaults.char_class->byval_arg;
5077                 insts [ninsts ++] = &mono_defaults.boolean_class->byval_arg;
5078
5079                 /* Add GenericComparer<T> instances for primitive types for Enum.ToString () */
5080                 klass = mono_class_try_load_from_name (acfg->image, "System.Collections.Generic", "GenericComparer`1");
5081                 if (klass)
5082                         add_instances_of (acfg, klass, insts, ninsts, TRUE);
5083                 klass = mono_class_try_load_from_name (acfg->image, "System.Collections.Generic", "GenericEqualityComparer`1");
5084                 if (klass)
5085                         add_instances_of (acfg, klass, insts, ninsts, TRUE);
5086
5087                 /* Add instances of EnumEqualityComparer which are created by EqualityComparer<T> for enums */
5088                 {
5089                         MonoClass *enum_comparer;
5090                         MonoType *insts [16];
5091                         int ninsts;
5092
5093                         ninsts = 0;
5094                         insts [ninsts ++] = &mono_defaults.int32_class->byval_arg;
5095                         insts [ninsts ++] = &mono_defaults.uint32_class->byval_arg;
5096                         insts [ninsts ++] = &mono_defaults.uint16_class->byval_arg;
5097                         insts [ninsts ++] = &mono_defaults.byte_class->byval_arg;
5098                         enum_comparer = mono_class_load_from_name (mono_defaults.corlib, "System.Collections.Generic", "EnumEqualityComparer`1");
5099                         add_instances_of (acfg, enum_comparer, insts, ninsts, FALSE);
5100
5101                         ninsts = 0;
5102                         insts [ninsts ++] = &mono_defaults.int16_class->byval_arg;
5103                         enum_comparer = mono_class_load_from_name (mono_defaults.corlib, "System.Collections.Generic", "ShortEnumEqualityComparer`1");
5104                         add_instances_of (acfg, enum_comparer, insts, ninsts, FALSE);
5105
5106                         ninsts = 0;
5107                         insts [ninsts ++] = &mono_defaults.sbyte_class->byval_arg;
5108                         enum_comparer = mono_class_load_from_name (mono_defaults.corlib, "System.Collections.Generic", "SByteEnumEqualityComparer`1");
5109                         add_instances_of (acfg, enum_comparer, insts, ninsts, FALSE);
5110
5111                         enum_comparer = mono_class_load_from_name (mono_defaults.corlib, "System.Collections.Generic", "LongEnumEqualityComparer`1");
5112                         ninsts = 0;
5113                         insts [ninsts ++] = &mono_defaults.int64_class->byval_arg;
5114                         insts [ninsts ++] = &mono_defaults.uint64_class->byval_arg;
5115                         add_instances_of (acfg, enum_comparer, insts, ninsts, FALSE);
5116                 }
5117
5118                 /* Add instances of the array generic interfaces for primitive types */
5119                 /* This will add instances of the InternalArray_ helper methods in Array too */
5120                 klass = mono_class_try_load_from_name (acfg->image, "System.Collections.Generic", "ICollection`1");
5121                 if (klass)
5122                         add_instances_of (acfg, klass, insts, ninsts, TRUE);
5123
5124                 klass = mono_class_try_load_from_name (acfg->image, "System.Collections.Generic", "IList`1");
5125                 if (klass)
5126                         add_instances_of (acfg, klass, insts, ninsts, TRUE);
5127
5128                 klass = mono_class_try_load_from_name (acfg->image, "System.Collections.Generic", "IEnumerable`1");
5129                 if (klass)
5130                         add_instances_of (acfg, klass, insts, ninsts, TRUE);
5131
5132                 /*
5133                  * Add a managed-to-native wrapper of Array.GetGenericValueImpl<object>, which is
5134                  * used for all instances of GetGenericValueImpl by the AOT runtime.
5135                  */
5136                 {
5137                         MonoGenericContext ctx;
5138                         MonoType *args [16];
5139                         MonoMethod *get_method;
5140                         MonoClass *array_klass = mono_class_create_array (mono_defaults.object_class, 1)->parent;
5141
5142                         get_method = mono_class_get_method_from_name (array_klass, "GetGenericValueImpl", 2);
5143
5144                         if (get_method) {
5145                                 ERROR_DECL (error);
5146                                 memset (&ctx, 0, sizeof (ctx));
5147                                 args [0] = &mono_defaults.object_class->byval_arg;
5148                                 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
5149                                 add_extra_method (acfg, mono_marshal_get_native_wrapper (mono_class_inflate_generic_method_checked (get_method, &ctx, error), TRUE, TRUE));
5150                                 g_assert (mono_error_ok (error)); /* FIXME don't swallow the error */
5151                         }
5152                 }
5153
5154                 /* Same for CompareExchange<T>/Exchange<T> */
5155                 {
5156                         MonoGenericContext ctx;
5157                         MonoType *args [16];
5158                         MonoMethod *m;
5159                         MonoClass *interlocked_klass = mono_class_load_from_name (mono_defaults.corlib, "System.Threading", "Interlocked");
5160                         gpointer iter = NULL;
5161
5162                         while ((m = mono_class_get_methods (interlocked_klass, &iter))) {
5163                                 if ((!strcmp (m->name, "CompareExchange") || !strcmp (m->name, "Exchange")) && m->is_generic) {
5164                                         ERROR_DECL (error);
5165                                         memset (&ctx, 0, sizeof (ctx));
5166                                         args [0] = &mono_defaults.object_class->byval_arg;
5167                                         ctx.method_inst = mono_metadata_get_generic_inst (1, args);
5168                                         add_extra_method (acfg, mono_marshal_get_native_wrapper (mono_class_inflate_generic_method_checked (m, &ctx, error), TRUE, TRUE));
5169                                         g_assert (mono_error_ok (error)); /* FIXME don't swallow the error */
5170                                 }
5171                         }
5172                 }
5173
5174                 /* Same for Volatile.Read/Write<T> */
5175                 {
5176                         MonoGenericContext ctx;
5177                         MonoType *args [16];
5178                         MonoMethod *m;
5179                         MonoClass *volatile_klass = mono_class_try_load_from_name (mono_defaults.corlib, "System.Threading", "Volatile");
5180                         gpointer iter = NULL;
5181
5182                         if (volatile_klass) {
5183                                 while ((m = mono_class_get_methods (volatile_klass, &iter))) {
5184                                         if ((!strcmp (m->name, "Read") || !strcmp (m->name, "Write")) && m->is_generic) {
5185                                                 ERROR_DECL (error);
5186                                                 memset (&ctx, 0, sizeof (ctx));
5187                                                 args [0] = &mono_defaults.object_class->byval_arg;
5188                                                 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
5189                                                 add_extra_method (acfg, mono_marshal_get_native_wrapper (mono_class_inflate_generic_method_checked (m, &ctx, error), TRUE, TRUE));
5190                                                 g_assert (mono_error_ok (error)); /* FIXME don't swallow the error */
5191                                         }
5192                                 }
5193                         }
5194                 }
5195
5196                 /* object[] accessor wrappers. */
5197                 for (i = 1; i < 4; ++i) {
5198                         MonoClass *obj_array_class = mono_class_create_array (mono_defaults.object_class, i);
5199                         MonoMethod *m;
5200
5201                         m = mono_class_get_method_from_name (obj_array_class, "Get", i);
5202                         g_assert (m);
5203
5204                         m = mono_marshal_get_array_accessor_wrapper (m);
5205                         add_extra_method (acfg, m);
5206
5207                         m = mono_class_get_method_from_name (obj_array_class, "Address", i);
5208                         g_assert (m);
5209
5210                         m = mono_marshal_get_array_accessor_wrapper (m);
5211                         add_extra_method (acfg, m);
5212
5213                         m = mono_class_get_method_from_name (obj_array_class, "Set", i + 1);
5214                         g_assert (m);
5215
5216                         m = mono_marshal_get_array_accessor_wrapper (m);
5217                         add_extra_method (acfg, m);
5218                 }
5219         }
5220 }
5221
5222 /*
5223  * is_direct_callable:
5224  *
5225  *   Return whenever the method identified by JI is directly callable without
5226  * going through the PLT.
5227  */
5228 static gboolean
5229 is_direct_callable (MonoAotCompile *acfg, MonoMethod *method, MonoJumpInfo *patch_info)
5230 {
5231         if ((patch_info->type == MONO_PATCH_INFO_METHOD) && (patch_info->data.method->klass->image == acfg->image)) {
5232                 MonoCompile *callee_cfg = (MonoCompile *)g_hash_table_lookup (acfg->method_to_cfg, patch_info->data.method);
5233                 if (callee_cfg) {
5234                         gboolean direct_callable = TRUE;
5235
5236                         if (direct_callable && (acfg->aot_opts.dedup || acfg->aot_opts.dedup_include) && mono_aot_can_dedup (patch_info->data.method))
5237                                 direct_callable = FALSE;
5238
5239                         if (direct_callable && !(!callee_cfg->has_got_slots && mono_class_is_before_field_init (callee_cfg->method->klass)))
5240                                 direct_callable = FALSE;
5241                         if ((callee_cfg->method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) && (!method || method->wrapper_type != MONO_WRAPPER_SYNCHRONIZED))
5242                                 // FIXME: Maybe call the wrapper directly ?
5243                                 direct_callable = FALSE;
5244
5245                         if (acfg->aot_opts.soft_debug || acfg->aot_opts.no_direct_calls) {
5246                                 /* Disable this so all calls go through load_method (), see the
5247                                  * mini_get_debug_options ()->load_aot_jit_info_eagerly = TRUE; line in
5248                                  * mono_debugger_agent_init ().
5249                                  */
5250                                 direct_callable = FALSE;
5251                         }
5252
5253                         if (callee_cfg->method->wrapper_type == MONO_WRAPPER_ALLOC)
5254                                 /* sgen does some initialization when the allocator method is created */
5255                                 direct_callable = FALSE;
5256                         if (callee_cfg->method->wrapper_type == MONO_WRAPPER_WRITE_BARRIER)
5257                                 /* we don't know at compile time whether sgen is concurrent or not */
5258                                 direct_callable = FALSE;
5259
5260                         if (direct_callable)
5261                                 return TRUE;
5262                 }
5263         } else if ((patch_info->type == MONO_PATCH_INFO_ICALL_ADDR_CALL && patch_info->data.method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) {
5264                 if (acfg->aot_opts.direct_pinvoke)
5265                         return TRUE;
5266         } else if (patch_info->type == MONO_PATCH_INFO_ICALL_ADDR_CALL) {
5267                 if (acfg->aot_opts.direct_icalls)
5268                         return TRUE;
5269                 return FALSE;
5270         }
5271
5272         return FALSE;
5273 }
5274
5275 #ifdef MONO_ARCH_AOT_SUPPORTED
5276 static const char *
5277 get_pinvoke_import (MonoAotCompile *acfg, MonoMethod *method)
5278 {
5279         MonoImage *image = method->klass->image;
5280         MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *) method;
5281         MonoTableInfo *tables = image->tables;
5282         MonoTableInfo *im = &tables [MONO_TABLE_IMPLMAP];
5283         MonoTableInfo *mr = &tables [MONO_TABLE_MODULEREF];
5284         guint32 im_cols [MONO_IMPLMAP_SIZE];
5285         char *import;
5286
5287         import = (char *)g_hash_table_lookup (acfg->method_to_pinvoke_import, method);
5288         if (import != NULL)
5289                 return import;
5290
5291         if (!piinfo->implmap_idx || piinfo->implmap_idx > im->rows)
5292                 return NULL;
5293
5294         mono_metadata_decode_row (im, piinfo->implmap_idx - 1, im_cols, MONO_IMPLMAP_SIZE);
5295
5296         if (!im_cols [MONO_IMPLMAP_SCOPE] || im_cols [MONO_IMPLMAP_SCOPE] > mr->rows)
5297                 return NULL;
5298
5299         import = g_strdup_printf ("%s", mono_metadata_string_heap (image, im_cols [MONO_IMPLMAP_NAME]));
5300
5301         g_hash_table_insert (acfg->method_to_pinvoke_import, method, import);
5302
5303         return import;
5304 }
5305 #else
5306 static const char *
5307 get_pinvoke_import (MonoAotCompile *acfg, MonoMethod *method)
5308 {
5309         return NULL;
5310 }
5311 #endif
5312
5313 static gint
5314 compare_lne (MonoDebugLineNumberEntry *a, MonoDebugLineNumberEntry *b)
5315 {
5316         if (a->native_offset == b->native_offset)
5317                 return a->il_offset - b->il_offset;
5318         else
5319                 return a->native_offset - b->native_offset;
5320 }
5321
5322 /*
5323  * compute_line_numbers:
5324  *
5325  * Returns a sparse array of size CODE_SIZE containing MonoDebugSourceLocation* entries for the native offsets which have a corresponding line number
5326  * entry.
5327  */
5328 static MonoDebugSourceLocation**
5329 compute_line_numbers (MonoMethod *method, int code_size, MonoDebugMethodJitInfo *debug_info)
5330 {
5331         MonoDebugMethodInfo *minfo;
5332         MonoDebugLineNumberEntry *ln_array;
5333         MonoDebugSourceLocation *loc;
5334         int i, prev_line, prev_il_offset;
5335         int *native_to_il_offset = NULL;
5336         MonoDebugSourceLocation **res;
5337         gboolean first;
5338
5339         minfo = mono_debug_lookup_method (method);
5340         if (!minfo)
5341                 return NULL;
5342         // FIXME: This seems to happen when two methods have the same cfg->method_to_register
5343         if (debug_info->code_size != code_size)
5344                 return NULL;
5345
5346         g_assert (code_size);
5347
5348         /* Compute the native->IL offset mapping */
5349
5350         ln_array = g_new0 (MonoDebugLineNumberEntry, debug_info->num_line_numbers);
5351         memcpy (ln_array, debug_info->line_numbers, debug_info->num_line_numbers * sizeof (MonoDebugLineNumberEntry));
5352
5353         qsort (ln_array, debug_info->num_line_numbers, sizeof (MonoDebugLineNumberEntry), (int (*)(const void *, const void *))compare_lne);
5354
5355         native_to_il_offset = g_new0 (int, code_size + 1);
5356
5357         for (i = 0; i < debug_info->num_line_numbers; ++i) {
5358                 int j;
5359                 MonoDebugLineNumberEntry *lne = &ln_array [i];
5360
5361                 if (i == 0) {
5362                         for (j = 0; j < lne->native_offset; ++j)
5363                                 native_to_il_offset [j] = -1;
5364                 }
5365
5366                 if (i < debug_info->num_line_numbers - 1) {
5367                         MonoDebugLineNumberEntry *lne_next = &ln_array [i + 1];
5368
5369                         for (j = lne->native_offset; j < lne_next->native_offset; ++j)
5370                                 native_to_il_offset [j] = lne->il_offset;
5371                 } else {
5372                         for (j = lne->native_offset; j < code_size; ++j)
5373                                 native_to_il_offset [j] = lne->il_offset;
5374                 }
5375         }
5376         g_free (ln_array);
5377
5378         /* Compute the native->line number mapping */
5379         res = g_new0 (MonoDebugSourceLocation*, code_size);
5380         prev_il_offset = -1;
5381         prev_line = -1;
5382         first = TRUE;
5383         for (i = 0; i < code_size; ++i) {
5384                 int il_offset = native_to_il_offset [i];
5385
5386                 if (il_offset == -1 || il_offset == prev_il_offset)
5387                         continue;
5388                 prev_il_offset = il_offset;
5389                 loc = mono_debug_method_lookup_location (minfo, il_offset);
5390                 if (!(loc && loc->source_file))
5391                         continue;
5392                 if (loc->row == prev_line) {
5393                         mono_debug_free_source_location (loc);
5394                         continue;
5395                 }
5396                 prev_line = loc->row;
5397                 //printf ("D: %s:%d il=%x native=%x\n", loc->source_file, loc->row, il_offset, i);
5398                 if (first)
5399                         /* This will cover the prolog too */
5400                         res [0] = loc;
5401                 else
5402                         res [i] = loc;
5403                 first = FALSE;
5404         }
5405         return res;
5406 }
5407
5408 static int
5409 get_file_index (MonoAotCompile *acfg, const char *source_file)
5410 {
5411         int findex;
5412
5413         // FIXME: Free these
5414         if (!acfg->dwarf_ln_filenames)
5415                 acfg->dwarf_ln_filenames = g_hash_table_new (g_str_hash, g_str_equal);
5416         findex = GPOINTER_TO_INT (g_hash_table_lookup (acfg->dwarf_ln_filenames, source_file));
5417         if (!findex) {
5418                 findex = g_hash_table_size (acfg->dwarf_ln_filenames) + 1;
5419                 g_hash_table_insert (acfg->dwarf_ln_filenames, g_strdup (source_file), GINT_TO_POINTER (findex));
5420                 emit_unset_mode (acfg);
5421                 fprintf (acfg->fp, ".file %d \"%s\"\n", findex, mono_dwarf_escape_path (source_file));
5422         }
5423         return findex;
5424 }
5425
5426 #ifdef TARGET_ARM64
5427 #define INST_LEN 4
5428 #else
5429 #define INST_LEN 1
5430 #endif
5431
5432 /*
5433  * emit_and_reloc_code:
5434  *
5435  *   Emit the native code in CODE, handling relocations along the way. If GOT_ONLY
5436  * is true, calls are made through the GOT too. This is used for emitting trampolines
5437  * in full-aot mode, since calls made from trampolines couldn't go through the PLT,
5438  * since trampolines are needed to make PTL work.
5439  */
5440 static void
5441 emit_and_reloc_code (MonoAotCompile *acfg, MonoMethod *method, guint8 *code, guint32 code_len, MonoJumpInfo *relocs, gboolean got_only, MonoDebugMethodJitInfo *debug_info)
5442 {
5443         int i, pindex, start_index;
5444         GPtrArray *patches;
5445         MonoJumpInfo *patch_info;
5446         MonoDebugSourceLocation **locs = NULL;
5447         gboolean skip, prologue_end = FALSE;
5448 #ifdef MONO_ARCH_AOT_SUPPORTED
5449         gboolean direct_call, external_call;
5450         guint32 got_slot;
5451         const char *direct_call_target = 0;
5452         const char *direct_pinvoke;
5453 #endif
5454
5455         if (acfg->gas_line_numbers && method && debug_info) {
5456                 locs = compute_line_numbers (method, code_len, debug_info);
5457                 if (!locs) {
5458                         int findex = get_file_index (acfg, "<unknown>");
5459                         emit_unset_mode (acfg);
5460                         fprintf (acfg->fp, ".loc %d %d 0\n", findex, 1);
5461                 }
5462         }
5463
5464         /* Collect and sort relocations */
5465         patches = g_ptr_array_new ();
5466         for (patch_info = relocs; patch_info; patch_info = patch_info->next)
5467                 g_ptr_array_add (patches, patch_info);
5468         g_ptr_array_sort (patches, compare_patches);
5469
5470         start_index = 0;
5471         for (i = 0; i < code_len; i += INST_LEN) {
5472                 patch_info = NULL;
5473                 for (pindex = start_index; pindex < patches->len; ++pindex) {
5474                         patch_info = (MonoJumpInfo *)g_ptr_array_index (patches, pindex);
5475                         if (patch_info->ip.i >= i)
5476                                 break;
5477                 }
5478
5479                 if (locs && locs [i]) {
5480                         MonoDebugSourceLocation *loc = locs [i];
5481                         int findex;
5482                         const char *options;
5483
5484                         findex = get_file_index (acfg, loc->source_file);
5485                         emit_unset_mode (acfg);
5486                         if (!prologue_end)
5487                                 options = " prologue_end";
5488                         else
5489                                 options = "";
5490                         prologue_end = TRUE;
5491                         fprintf (acfg->fp, ".loc %d %d 0%s\n", findex, loc->row, options);
5492                         mono_debug_free_source_location (loc);
5493                 }
5494
5495                 skip = FALSE;
5496 #ifdef MONO_ARCH_AOT_SUPPORTED
5497                 if (patch_info && (patch_info->ip.i == i) && (pindex < patches->len)) {
5498                         start_index = pindex;
5499
5500                         switch (patch_info->type) {
5501                         case MONO_PATCH_INFO_NONE:
5502                                 break;
5503                         case MONO_PATCH_INFO_GOT_OFFSET: {
5504                                 int code_size;
5505
5506                                 arch_emit_got_offset (acfg, code + i, &code_size);
5507                                 i += code_size - INST_LEN;
5508                                 skip = TRUE;
5509                                 patch_info->type = MONO_PATCH_INFO_NONE;
5510                                 break;
5511                         }
5512                         case MONO_PATCH_INFO_OBJC_SELECTOR_REF: {
5513                                 int code_size, index;
5514                                 char *selector = (char *)patch_info->data.target;
5515
5516                                 if (!acfg->objc_selector_to_index)
5517                                         acfg->objc_selector_to_index = g_hash_table_new (g_str_hash, g_str_equal);
5518                                 if (!acfg->objc_selectors)
5519                                         acfg->objc_selectors = g_ptr_array_new ();
5520                                 index = GPOINTER_TO_UINT (g_hash_table_lookup (acfg->objc_selector_to_index, selector));
5521                                 if (index)
5522                                         index --;
5523                                 else {
5524                                         index = acfg->objc_selector_index;
5525                                         g_ptr_array_add (acfg->objc_selectors, (void*)patch_info->data.target);
5526                                         g_hash_table_insert (acfg->objc_selector_to_index, selector, GUINT_TO_POINTER (index + 1));
5527                                         acfg->objc_selector_index ++;
5528                                 }
5529
5530                                 arch_emit_objc_selector_ref (acfg, code + i, index, &code_size);
5531                                 i += code_size - INST_LEN;
5532                                 skip = TRUE;
5533                                 patch_info->type = MONO_PATCH_INFO_NONE;
5534                                 break;
5535                         }
5536                         default: {
5537                                 /*
5538                                  * If this patch is a call, try emitting a direct call instead of
5539                                  * through a PLT entry. This is possible if the called method is in
5540                                  * the same assembly and requires no initialization.
5541                                  */
5542                                 direct_call = FALSE;
5543                                 external_call = FALSE;
5544                                 if ((patch_info->type == MONO_PATCH_INFO_METHOD) && (patch_info->data.method->klass->image == acfg->image)) {
5545                                         if (!got_only && is_direct_callable (acfg, method, patch_info)) {
5546                                                 MonoCompile *callee_cfg = (MonoCompile *)g_hash_table_lookup (acfg->method_to_cfg, patch_info->data.method);
5547
5548                                                 // Don't compile inflated methods if we're doing dedup
5549                                                 if (acfg->aot_opts.dedup && !mono_aot_can_dedup (patch_info->data.method)) {
5550                                                         char *name = mono_aot_get_mangled_method_name (patch_info->data.method);
5551                                                         mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "DIRECT CALL: %s by %s", name, method ? mono_method_full_name (method, TRUE) : "");
5552                                                         g_free (name);
5553
5554                                                         direct_call = TRUE;
5555                                                         direct_call_target = callee_cfg->asm_symbol;
5556                                                         patch_info->type = MONO_PATCH_INFO_NONE;
5557                                                         acfg->stats.direct_calls ++;
5558                                                 }
5559                                         }
5560
5561                                         acfg->stats.all_calls ++;
5562                                 } else if (patch_info->type == MONO_PATCH_INFO_ICALL_ADDR_CALL) {
5563                                         if (!got_only && is_direct_callable (acfg, method, patch_info)) {
5564                                                 if (!(patch_info->data.method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL))
5565                                                         direct_pinvoke = mono_lookup_icall_symbol (patch_info->data.method);
5566                                                 else
5567                                                         direct_pinvoke = get_pinvoke_import (acfg, patch_info->data.method);
5568                                                 if (direct_pinvoke) {
5569                                                         direct_call = TRUE;
5570                                                         g_assert (strlen (direct_pinvoke) < 1000);
5571                                                         direct_call_target = g_strdup_printf ("%s%s", acfg->user_symbol_prefix, direct_pinvoke);
5572                                                 }
5573                                         }
5574                                 } else if (patch_info->type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
5575                                         const char *sym = mono_lookup_jit_icall_symbol (patch_info->data.name);
5576                                         if (!got_only && sym && acfg->aot_opts.direct_icalls) {
5577                                                 /* Call to a C function implementing a jit icall */
5578                                                 direct_call = TRUE;
5579                                                 external_call = TRUE;
5580                                                 g_assert (strlen (sym) < 1000);
5581                                                 direct_call_target = g_strdup_printf ("%s%s", acfg->user_symbol_prefix, sym);
5582                                         }
5583                                 } else if (patch_info->type == MONO_PATCH_INFO_INTERNAL_METHOD) {
5584                                         MonoJitICallInfo *info = mono_find_jit_icall_by_name (patch_info->data.name);
5585                                         const char *sym = mono_lookup_jit_icall_symbol (patch_info->data.name);
5586                                         if (!got_only && sym && acfg->aot_opts.direct_icalls && info->func == info->wrapper) {
5587                                                 /* Call to a jit icall without a wrapper */
5588                                                 direct_call = TRUE;
5589                                                 external_call = TRUE;
5590                                                 g_assert (strlen (sym) < 1000);
5591                                                 direct_call_target = g_strdup_printf ("%s%s", acfg->user_symbol_prefix, sym);
5592                                         }
5593                                 }
5594
5595                                 if (direct_call) {
5596                                         patch_info->type = MONO_PATCH_INFO_NONE;
5597                                         acfg->stats.direct_calls ++;
5598                                 }
5599
5600                                 if (!got_only && !direct_call) {
5601                                         MonoPltEntry *plt_entry = get_plt_entry (acfg, patch_info);
5602                                         if (plt_entry) {
5603                                                 /* This patch has a PLT entry, so we must emit a call to the PLT entry */
5604                                                 direct_call = TRUE;
5605                                                 direct_call_target = plt_entry->symbol;
5606
5607                                                 /* Nullify the patch */
5608                                                 patch_info->type = MONO_PATCH_INFO_NONE;
5609                                                 plt_entry->jit_used = TRUE;
5610                                         }
5611                                 }
5612
5613                                 if (direct_call) {
5614                                         int call_size;
5615
5616                                         arch_emit_direct_call (acfg, direct_call_target, external_call, FALSE, patch_info, &call_size);
5617                                         i += call_size - INST_LEN;
5618                                 } else {
5619                                         int code_size;
5620
5621                                         got_slot = get_got_offset (acfg, FALSE, patch_info);
5622
5623                                         arch_emit_got_access (acfg, acfg->got_symbol, code + i, got_slot, &code_size);
5624                                         i += code_size - INST_LEN;
5625                                 }
5626                                 skip = TRUE;
5627                         }
5628                         }
5629                 }
5630 #endif /* MONO_ARCH_AOT_SUPPORTED */
5631
5632                 if (!skip) {
5633                         /* Find next patch */
5634                         patch_info = NULL;
5635                         for (pindex = start_index; pindex < patches->len; ++pindex) {
5636                                 patch_info = (MonoJumpInfo *)g_ptr_array_index (patches, pindex);
5637                                 if (patch_info->ip.i >= i)
5638                                         break;
5639                         }
5640
5641                         /* Try to emit multiple bytes at once */
5642                         if (pindex < patches->len && patch_info->ip.i > i) {
5643                                 int limit;
5644
5645                                 for (limit = i + INST_LEN; limit < patch_info->ip.i; limit += INST_LEN) {
5646                                         if (locs && locs [limit])
5647                                                 break;
5648                                 }
5649
5650                                 emit_code_bytes (acfg, code + i, limit - i);
5651                                 i = limit - INST_LEN;
5652                         } else {
5653                                 emit_code_bytes (acfg, code + i, INST_LEN);
5654                         }
5655                 }
5656         }
5657
5658         g_ptr_array_free (patches, TRUE);
5659         g_free (locs);
5660 }
5661
5662 /*
5663  * sanitize_symbol:
5664  *
5665  *   Return a modified version of S which only includes characters permissible in symbols.
5666  */
5667 static char*
5668 sanitize_symbol (MonoAotCompile *acfg, char *s)
5669 {
5670         gboolean process = FALSE;
5671         int i, len;
5672         GString *gs;
5673         char *res;
5674
5675         if (!s)
5676                 return s;
5677
5678         len = strlen (s);
5679         for (i = 0; i < len; ++i)
5680                 if (!(s [i] <= 0x7f && (isalnum (s [i]) || s [i] == '_')))
5681                         process = TRUE;
5682         if (!process)
5683                 return s;
5684
5685         gs = g_string_sized_new (len);
5686         for (i = 0; i < len; ++i) {
5687                 guint8 c = s [i];
5688                 if (c <= 0x7f && (isalnum (c) || c == '_')) {
5689                         g_string_append_c (gs, c);
5690                 } else if (c > 0x7f) {
5691                         /* multi-byte utf8 */
5692                         g_string_append_printf (gs, "_0x%x", c);
5693                         i ++;
5694                         c = s [i];
5695                         while (c >> 6 == 0x2) {
5696                                 g_string_append_printf (gs, "%x", c);
5697                                 i ++;
5698                                 c = s [i];
5699                         }
5700                         g_string_append_printf (gs, "_");
5701                         i --;
5702                 } else {
5703                         g_string_append_c (gs, '_');
5704                 }
5705         }
5706
5707         res = mono_mempool_strdup (acfg->mempool, gs->str);
5708         g_string_free (gs, TRUE);
5709         return res;
5710 }
5711
5712 static char*
5713 get_debug_sym (MonoMethod *method, const char *prefix, GHashTable *cache)
5714 {
5715         char *name1, *name2, *cached;
5716         int i, j, len, count;
5717         MonoMethod *cached_method;
5718
5719         name1 = mono_method_full_name (method, TRUE);
5720
5721 #ifdef TARGET_MACH
5722         // This is so that we don't accidentally create a local symbol (which starts with 'L')
5723         if ((!prefix || !*prefix) && name1 [0] == 'L')
5724                 prefix = "_";
5725 #endif
5726
5727 #if defined(TARGET_WIN32) && defined(TARGET_X86)
5728         char adjustedPrefix [MAX_SYMBOL_SIZE];
5729         prefix = mangle_symbol (prefix, adjustedPrefix, G_N_ELEMENTS (adjustedPrefix));
5730 #endif
5731
5732         len = strlen (name1);
5733         name2 = (char *)malloc (strlen (prefix) + len + 16);
5734         memcpy (name2, prefix, strlen (prefix));
5735         j = strlen (prefix);
5736         for (i = 0; i < len; ++i) {
5737                 if (i == 0 && name1 [0] >= '0' && name1 [0] <= '9') {
5738                         name2 [j ++] = '_';
5739                 } else if (isalnum (name1 [i])) {
5740                         name2 [j ++] = name1 [i];
5741                 } else if (name1 [i] == ' ' && name1 [i + 1] == '(' && name1 [i + 2] == ')') {
5742                         i += 2;
5743                 } else if (name1 [i] == ',' && name1 [i + 1] == ' ') {
5744                         name2 [j ++] = '_';
5745                         i++;
5746                 } else if (name1 [i] == '(' || name1 [i] == ')' || name1 [i] == '>') {
5747                 } else
5748                         name2 [j ++] = '_';
5749         }
5750         name2 [j] = '\0';
5751
5752         g_free (name1);
5753
5754         count = 0;
5755         while (TRUE) {
5756                 cached_method = (MonoMethod *)g_hash_table_lookup (cache, name2);
5757                 if (!(cached_method && cached_method != method))
5758                         break;
5759                 sprintf (name2 + j, "_%d", count);
5760                 count ++;
5761         }
5762
5763         cached = g_strdup (name2);
5764         g_hash_table_insert (cache, cached, method);
5765
5766         return name2;
5767 }
5768
5769 static void
5770 emit_method_code (MonoAotCompile *acfg, MonoCompile *cfg)
5771 {
5772         MonoMethod *method;
5773         int method_index;
5774         guint8 *code;
5775         char *debug_sym = NULL;
5776         char *symbol = NULL;
5777         int func_alignment = AOT_FUNC_ALIGNMENT;
5778         char *export_name;
5779
5780         g_assert (!ignore_cfg (cfg));
5781
5782         method = cfg->orig_method;
5783         code = cfg->native_code;
5784
5785         method_index = get_method_index (acfg, method);
5786         symbol = g_strdup_printf ("%sme_%x", acfg->temp_prefix, method_index);
5787
5788         /* Make the labels local */
5789         emit_section_change (acfg, ".text", 0);
5790         emit_alignment_code (acfg, func_alignment);
5791
5792         if (acfg->global_symbols && acfg->need_no_dead_strip)
5793                 fprintf (acfg->fp, "    .no_dead_strip %s\n", cfg->asm_symbol);
5794
5795         emit_label (acfg, cfg->asm_symbol);
5796
5797         if (acfg->aot_opts.write_symbols && !acfg->global_symbols && !acfg->llvm) {
5798                 /*
5799                  * Write a C style symbol for every method, this has two uses:
5800                  * - it works on platforms where the dwarf debugging info is not
5801                  *   yet supported.
5802                  * - it allows the setting of breakpoints of aot-ed methods.
5803                  */
5804
5805                 // Comment out to force dedup to link these symbols and forbid compiling
5806                 // in duplicated code. This is an "assert when linking if broken" trick.
5807                 /*if (mono_aot_can_dedup (method) && (acfg->aot_opts.dedup || acfg->aot_opts.dedup_include))*/
5808                         /*debug_sym = mono_aot_get_mangled_method_name (method);*/
5809                 /*else*/
5810                         debug_sym = get_debug_sym (method, "", acfg->method_label_hash);
5811
5812                 cfg->asm_debug_symbol = g_strdup (debug_sym);
5813
5814                 if (acfg->need_no_dead_strip)
5815                         fprintf (acfg->fp, "    .no_dead_strip %s\n", debug_sym);
5816
5817                 // Comment out to force dedup to link these symbols and forbid compiling
5818                 // in duplicated code. This is an "assert when linking if broken" trick.
5819                 /*if (mono_aot_can_dedup (method) && (acfg->aot_opts.dedup || acfg->aot_opts.dedup_include))*/
5820                         /*emit_global_inner (acfg, debug_sym, TRUE);*/
5821                 /*else*/
5822                         emit_local_symbol (acfg, debug_sym, symbol, TRUE);
5823
5824                 emit_label (acfg, debug_sym);
5825         }
5826
5827         export_name = (char *)g_hash_table_lookup (acfg->export_names, method);
5828         if (export_name) {
5829                 /* Emit a global symbol for the method */
5830                 emit_global_inner (acfg, export_name, TRUE);
5831                 emit_label (acfg, export_name);
5832         }
5833
5834         if (cfg->verbose_level > 0 && !ignore_cfg (cfg))
5835                 g_print ("Method %s emitted as %s\n", mono_method_get_full_name (method), cfg->asm_symbol);
5836
5837         acfg->stats.code_size += cfg->code_len;
5838
5839         acfg->cfgs [method_index]->got_offset = acfg->got_offset;
5840
5841         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 ()));
5842
5843         emit_line (acfg);
5844
5845         if (acfg->aot_opts.write_symbols) {
5846                 if (debug_sym)
5847                         emit_symbol_size (acfg, debug_sym, ".");
5848                 else
5849                         emit_symbol_size (acfg, cfg->asm_symbol, ".");
5850                 g_free (debug_sym);
5851         }
5852
5853         emit_label (acfg, symbol);
5854
5855         arch_emit_unwind_info_sections (acfg, cfg->asm_symbol, symbol, cfg->unwind_ops);
5856
5857         g_free (symbol);
5858 }
5859
5860 /**
5861  * encode_patch:
5862  *
5863  *  Encode PATCH_INFO into its disk representation.
5864  */
5865 static void
5866 encode_patch (MonoAotCompile *acfg, MonoJumpInfo *patch_info, guint8 *buf, guint8 **endbuf)
5867 {
5868         guint8 *p = buf;
5869
5870         switch (patch_info->type) {
5871         case MONO_PATCH_INFO_NONE:
5872                 break;
5873         case MONO_PATCH_INFO_IMAGE:
5874                 encode_value (get_image_index (acfg, patch_info->data.image), p, &p);
5875                 break;
5876         case MONO_PATCH_INFO_MSCORLIB_GOT_ADDR:
5877         case MONO_PATCH_INFO_GC_CARD_TABLE_ADDR:
5878         case MONO_PATCH_INFO_GC_NURSERY_START:
5879         case MONO_PATCH_INFO_GC_NURSERY_BITS:
5880                 break;
5881         case MONO_PATCH_INFO_CASTCLASS_CACHE:
5882                 encode_value (patch_info->data.index, p, &p);
5883                 break;
5884         case MONO_PATCH_INFO_METHOD_REL:
5885                 encode_value ((gint)patch_info->data.offset, p, &p);
5886                 break;
5887         case MONO_PATCH_INFO_SWITCH: {
5888                 gpointer *table = (gpointer *)patch_info->data.table->table;
5889                 int k;
5890
5891                 encode_value (patch_info->data.table->table_size, p, &p);
5892                 for (k = 0; k < patch_info->data.table->table_size; k++)
5893                         encode_value ((int)(gssize)table [k], p, &p);
5894                 break;
5895         }
5896         case MONO_PATCH_INFO_METHODCONST:
5897         case MONO_PATCH_INFO_METHOD:
5898         case MONO_PATCH_INFO_METHOD_JUMP:
5899         case MONO_PATCH_INFO_ICALL_ADDR:
5900         case MONO_PATCH_INFO_ICALL_ADDR_CALL:
5901         case MONO_PATCH_INFO_METHOD_RGCTX:
5902         case MONO_PATCH_INFO_METHOD_CODE_SLOT:
5903                 encode_method_ref (acfg, patch_info->data.method, p, &p);
5904                 break;
5905         case MONO_PATCH_INFO_AOT_JIT_INFO:
5906         case MONO_PATCH_INFO_GET_TLS_TRAMP:
5907         case MONO_PATCH_INFO_SET_TLS_TRAMP:
5908                 encode_value (patch_info->data.index, p, &p);
5909                 break;
5910         case MONO_PATCH_INFO_INTERNAL_METHOD:
5911         case MONO_PATCH_INFO_JIT_ICALL_ADDR:
5912         case MONO_PATCH_INFO_JIT_ICALL_ADDR_NOCALL: {
5913                 guint32 len = strlen (patch_info->data.name);
5914
5915                 encode_value (len, p, &p);
5916
5917                 memcpy (p, patch_info->data.name, len);
5918                 p += len;
5919                 *p++ = '\0';
5920                 break;
5921         }
5922         case MONO_PATCH_INFO_LDSTR: {
5923                 guint32 image_index = get_image_index (acfg, patch_info->data.token->image);
5924                 guint32 token = patch_info->data.token->token;
5925                 g_assert (mono_metadata_token_code (token) == MONO_TOKEN_STRING);
5926                 encode_value (image_index, p, &p);
5927                 encode_value (patch_info->data.token->token - MONO_TOKEN_STRING, p, &p);
5928                 break;
5929         }
5930         case MONO_PATCH_INFO_RVA:
5931         case MONO_PATCH_INFO_DECLSEC:
5932         case MONO_PATCH_INFO_LDTOKEN:
5933         case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
5934                 encode_value (get_image_index (acfg, patch_info->data.token->image), p, &p);
5935                 encode_value (patch_info->data.token->token, p, &p);
5936                 encode_value (patch_info->data.token->has_context, p, &p);
5937                 if (patch_info->data.token->has_context)
5938                         encode_generic_context (acfg, &patch_info->data.token->context, p, &p);
5939                 break;
5940         case MONO_PATCH_INFO_EXC_NAME: {
5941                 MonoClass *ex_class;
5942
5943                 ex_class =
5944                         mono_class_load_from_name (mono_defaults.exception_class->image,
5945                                                                   "System", (const char *)patch_info->data.target);
5946                 encode_klass_ref (acfg, ex_class, p, &p);
5947                 break;
5948         }
5949         case MONO_PATCH_INFO_R4:
5950                 encode_value (*((guint32 *)patch_info->data.target), p, &p);
5951                 break;
5952         case MONO_PATCH_INFO_R8:
5953                 encode_value (((guint32 *)patch_info->data.target) [MINI_LS_WORD_IDX], p, &p);
5954                 encode_value (((guint32 *)patch_info->data.target) [MINI_MS_WORD_IDX], p, &p);
5955                 break;
5956         case MONO_PATCH_INFO_VTABLE:
5957         case MONO_PATCH_INFO_CLASS:
5958         case MONO_PATCH_INFO_IID:
5959         case MONO_PATCH_INFO_ADJUSTED_IID:
5960                 encode_klass_ref (acfg, patch_info->data.klass, p, &p);
5961                 break;
5962         case MONO_PATCH_INFO_DELEGATE_TRAMPOLINE:
5963                 encode_klass_ref (acfg, patch_info->data.del_tramp->klass, p, &p);
5964                 if (patch_info->data.del_tramp->method) {
5965                         encode_value (1, p, &p);
5966                         encode_method_ref (acfg, patch_info->data.del_tramp->method, p, &p);
5967                 } else {
5968                         encode_value (0, p, &p);
5969                 }
5970                 encode_value (patch_info->data.del_tramp->is_virtual, p, &p);
5971                 break;
5972         case MONO_PATCH_INFO_FIELD:
5973         case MONO_PATCH_INFO_SFLDA:
5974                 encode_field_info (acfg, patch_info->data.field, p, &p);
5975                 break;
5976         case MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG:
5977                 break;
5978         case MONO_PATCH_INFO_PROFILER_ALLOCATION_COUNT:
5979                 break;
5980         case MONO_PATCH_INFO_RGCTX_FETCH:
5981         case MONO_PATCH_INFO_RGCTX_SLOT_INDEX: {
5982                 MonoJumpInfoRgctxEntry *entry = patch_info->data.rgctx_entry;
5983                 guint32 offset;
5984                 guint8 *buf2, *p2;
5985
5986                 /*
5987                  * entry->method has a lenghtly encoding and multiple rgctx_fetch entries
5988                  * reference the same method, so encode the method only once.
5989                  */
5990                 offset = GPOINTER_TO_UINT (g_hash_table_lookup (acfg->method_blob_hash, entry->method));
5991                 if (!offset) {
5992                         buf2 = (guint8 *)g_malloc (1024);
5993                         p2 = buf2;
5994
5995                         encode_method_ref (acfg, entry->method, p2, &p2);
5996                         g_assert (p2 - buf2 < 1024);
5997
5998                         offset = add_to_blob (acfg, buf2, p2 - buf2);
5999                         g_free (buf2);
6000
6001                         g_hash_table_insert (acfg->method_blob_hash, entry->method, GUINT_TO_POINTER (offset + 1));
6002                 } else {
6003                         offset --;
6004                 }
6005
6006                 encode_value (offset, p, &p);
6007                 g_assert ((int)entry->info_type < 256);
6008                 g_assert (entry->data->type < 256);
6009                 encode_value ((entry->in_mrgctx ? 1 : 0) | (entry->info_type << 1) | (entry->data->type << 9), p, &p);
6010                 encode_patch (acfg, entry->data, p, &p);
6011                 break;
6012         }
6013         case MONO_PATCH_INFO_SEQ_POINT_INFO:
6014         case MONO_PATCH_INFO_AOT_MODULE:
6015                 break;
6016         case MONO_PATCH_INFO_SIGNATURE:
6017         case MONO_PATCH_INFO_GSHAREDVT_IN_WRAPPER:
6018                 encode_signature (acfg, (MonoMethodSignature*)patch_info->data.target, p, &p);
6019                 break;
6020         case MONO_PATCH_INFO_GSHAREDVT_CALL:
6021                 encode_signature (acfg, (MonoMethodSignature*)patch_info->data.gsharedvt->sig, p, &p);
6022                 encode_method_ref (acfg, patch_info->data.gsharedvt->method, p, &p);
6023                 break;
6024         case MONO_PATCH_INFO_GSHAREDVT_METHOD: {
6025                 MonoGSharedVtMethodInfo *info = patch_info->data.gsharedvt_method;
6026                 int i;
6027
6028                 encode_method_ref (acfg, info->method, p, &p);
6029                 encode_value (info->num_entries, p, &p);
6030                 for (i = 0; i < info->num_entries; ++i) {
6031                         MonoRuntimeGenericContextInfoTemplate *template_ = &info->entries [i];
6032
6033                         encode_value (template_->info_type, p, &p);
6034                         switch (mini_rgctx_info_type_to_patch_info_type (template_->info_type)) {
6035                         case MONO_PATCH_INFO_CLASS:
6036                                 encode_klass_ref (acfg, mono_class_from_mono_type ((MonoType *)template_->data), p, &p);
6037                                 break;
6038                         case MONO_PATCH_INFO_FIELD:
6039                                 encode_field_info (acfg, (MonoClassField *)template_->data, p, &p);
6040                                 break;
6041                         default:
6042                                 g_assert_not_reached ();
6043                                 break;
6044                         }
6045                 }
6046                 break;
6047         }
6048         case MONO_PATCH_INFO_LDSTR_LIT: {
6049                 const char *s = (const char *)patch_info->data.target;
6050                 int len = strlen (s);
6051
6052                 encode_value (len, p, &p);
6053                 memcpy (p, s, len + 1);
6054                 p += len + 1;
6055                 break;
6056         }
6057         case MONO_PATCH_INFO_VIRT_METHOD:
6058                 encode_klass_ref (acfg, patch_info->data.virt_method->klass, p, &p);
6059                 encode_method_ref (acfg, patch_info->data.virt_method->method, p, &p);
6060                 break;
6061         case MONO_PATCH_INFO_GC_SAFE_POINT_FLAG:
6062         case MONO_PATCH_INFO_JIT_THREAD_ATTACH:
6063                 break;
6064         default:
6065                 g_warning ("unable to handle jump info %d", patch_info->type);
6066                 g_assert_not_reached ();
6067         }
6068
6069         *endbuf = p;
6070 }
6071
6072 static void
6073 encode_patch_list (MonoAotCompile *acfg, GPtrArray *patches, int n_patches, gboolean llvm, int first_got_offset, guint8 *buf, guint8 **endbuf)
6074 {
6075         guint8 *p = buf;
6076         guint32 pindex, offset;
6077         MonoJumpInfo *patch_info;
6078
6079         encode_value (n_patches, p, &p);
6080
6081         for (pindex = 0; pindex < patches->len; ++pindex) {
6082                 patch_info = (MonoJumpInfo *)g_ptr_array_index (patches, pindex);
6083
6084                 if (patch_info->type == MONO_PATCH_INFO_NONE || patch_info->type == MONO_PATCH_INFO_BB)
6085                         /* Nothing to do */
6086                         continue;
6087
6088                 offset = get_got_offset (acfg, llvm, patch_info);
6089                 encode_value (offset, p, &p);
6090         }
6091
6092         *endbuf = p;
6093 }
6094
6095 static void
6096 emit_method_info (MonoAotCompile *acfg, MonoCompile *cfg)
6097 {
6098         MonoMethod *method;
6099         int pindex, buf_size, n_patches;
6100         GPtrArray *patches;
6101         MonoJumpInfo *patch_info;
6102         guint32 method_index;
6103         guint8 *p, *buf;
6104         guint32 first_got_offset;
6105
6106         method = cfg->orig_method;
6107
6108         method_index = get_method_index (acfg, method);
6109
6110         /* Sort relocations */
6111         patches = g_ptr_array_new ();
6112         for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next)
6113                 g_ptr_array_add (patches, patch_info);
6114         g_ptr_array_sort (patches, compare_patches);
6115
6116         first_got_offset = acfg->cfgs [method_index]->got_offset;
6117
6118         /**********************/
6119         /* Encode method info */
6120         /**********************/
6121
6122         buf_size = (patches->len < 1000) ? 40960 : 40960 + (patches->len * 64);
6123         p = buf = (guint8 *)g_malloc (buf_size);
6124
6125         if (mono_class_get_cctor (method->klass)) {
6126                 encode_value (1, p, &p);
6127                 encode_klass_ref (acfg, method->klass, p, &p);
6128         } else {
6129                 /* Not needed when loading the method */
6130                 encode_value (0, p, &p);
6131         }
6132
6133         g_assert (!(cfg->opt & MONO_OPT_SHARED));
6134
6135         n_patches = 0;
6136         for (pindex = 0; pindex < patches->len; ++pindex) {
6137                 patch_info = (MonoJumpInfo *)g_ptr_array_index (patches, pindex);
6138
6139                 if ((patch_info->type == MONO_PATCH_INFO_GOT_OFFSET) ||
6140                         (patch_info->type == MONO_PATCH_INFO_NONE)) {
6141                         patch_info->type = MONO_PATCH_INFO_NONE;
6142                         /* Nothing to do */
6143                         continue;
6144                 }
6145
6146                 if ((patch_info->type == MONO_PATCH_INFO_IMAGE) && (patch_info->data.image == acfg->image)) {
6147                         /* Stored in a GOT slot initialized at module load time */
6148                         patch_info->type = MONO_PATCH_INFO_NONE;
6149                         continue;
6150                 }
6151
6152                 if (patch_info->type == MONO_PATCH_INFO_GC_CARD_TABLE_ADDR ||
6153                         patch_info->type == MONO_PATCH_INFO_GC_NURSERY_START ||
6154                         patch_info->type == MONO_PATCH_INFO_GC_NURSERY_BITS ||
6155                         patch_info->type == MONO_PATCH_INFO_AOT_MODULE) {
6156                         /* Stored in a GOT slot initialized at module load time */
6157                         patch_info->type = MONO_PATCH_INFO_NONE;
6158                         continue;
6159                 }
6160
6161                 if (is_plt_patch (patch_info) && !(cfg->compile_llvm && acfg->aot_opts.llvm_only)) {
6162                         /* Calls are made through the PLT */
6163                         patch_info->type = MONO_PATCH_INFO_NONE;
6164                         continue;
6165                 }
6166
6167                 n_patches ++;
6168         }
6169
6170         if (n_patches)
6171                 g_assert (cfg->has_got_slots);
6172
6173         encode_patch_list (acfg, patches, n_patches, cfg->compile_llvm, first_got_offset, p, &p);
6174
6175         g_ptr_array_free (patches, TRUE);
6176
6177         acfg->stats.info_size += p - buf;
6178
6179         g_assert (p - buf < buf_size);
6180
6181         cfg->method_info_offset = add_to_blob (acfg, buf, p - buf);
6182         g_free (buf);
6183 }
6184
6185 static guint32
6186 get_unwind_info_offset (MonoAotCompile *acfg, guint8 *encoded, guint32 encoded_len)
6187 {
6188         guint32 cache_index;
6189         guint32 offset;
6190
6191         /* Reuse the unwind module to canonize and store unwind info entries */
6192         cache_index = mono_cache_unwind_info (encoded, encoded_len);
6193
6194         /* Use +/- 1 to distinguish 0s from missing entries */
6195         offset = GPOINTER_TO_UINT (g_hash_table_lookup (acfg->unwind_info_offsets, GUINT_TO_POINTER (cache_index + 1)));
6196         if (offset)
6197                 return offset - 1;
6198         else {
6199                 guint8 buf [16];
6200                 guint8 *p;
6201
6202                 /*
6203                  * It would be easier to use assembler symbols, but the caller needs an
6204                  * offset now.
6205                  */
6206                 offset = acfg->unwind_info_offset;
6207                 g_hash_table_insert (acfg->unwind_info_offsets, GUINT_TO_POINTER (cache_index + 1), GUINT_TO_POINTER (offset + 1));
6208                 g_ptr_array_add (acfg->unwind_ops, GUINT_TO_POINTER (cache_index));
6209
6210                 p = buf;
6211                 encode_value (encoded_len, p, &p);
6212
6213                 acfg->unwind_info_offset += encoded_len + (p - buf);
6214                 return offset;
6215         }
6216 }
6217
6218 static void
6219 emit_exception_debug_info (MonoAotCompile *acfg, MonoCompile *cfg, gboolean store_seq_points)
6220 {
6221         int i, k, buf_size;
6222         guint32 debug_info_size, seq_points_size;
6223         guint8 *code;
6224         MonoMethodHeader *header;
6225         guint8 *p, *buf, *debug_info;
6226         MonoJitInfo *jinfo = cfg->jit_info;
6227         guint32 flags;
6228         gboolean use_unwind_ops = FALSE;
6229         MonoSeqPointInfo *seq_points;
6230
6231         code = cfg->native_code;
6232         header = cfg->header;
6233
6234         if (!acfg->aot_opts.nodebug) {
6235                 mono_debug_serialize_debug_info (cfg, &debug_info, &debug_info_size);
6236         } else {
6237                 debug_info = NULL;
6238                 debug_info_size = 0;
6239         }
6240
6241         seq_points = cfg->seq_point_info;
6242         seq_points_size = (store_seq_points)? mono_seq_point_info_get_write_size (seq_points) : 0;
6243
6244         buf_size = header->num_clauses * 256 + debug_info_size + 2048 + seq_points_size + cfg->gc_map_size;
6245
6246         p = buf = (guint8 *)g_malloc (buf_size);
6247
6248         use_unwind_ops = cfg->unwind_ops != NULL;
6249
6250         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);
6251
6252         encode_value (flags, p, &p);
6253
6254         if (use_unwind_ops) {
6255                 guint32 encoded_len;
6256                 guint8 *encoded;
6257                 guint32 unwind_desc;
6258
6259                 encoded = mono_unwind_ops_encode (cfg->unwind_ops, &encoded_len);
6260
6261                 unwind_desc = get_unwind_info_offset (acfg, encoded, encoded_len);
6262                 encode_value (unwind_desc, p, &p);
6263
6264                 g_free (encoded);
6265         } else {
6266                 encode_value (jinfo->unwind_info, p, &p);
6267         }
6268
6269         /*Encode the number of holes before the number of clauses to make decoding easier*/
6270         if (jinfo->has_try_block_holes) {
6271                 MonoTryBlockHoleTableJitInfo *table = mono_jit_info_get_try_block_hole_table_info (jinfo);
6272                 encode_value (table->num_holes, p, &p);
6273         }
6274
6275         if (jinfo->has_arch_eh_info) {
6276                 /*
6277                  * In AOT mode, the code length is calculated from the address of the previous method,
6278                  * which could include alignment padding, so calculating the start of the epilog as
6279                  * code_len - epilog_size is correct any more. Save the real code len as a workaround.
6280                  */
6281                 encode_value (jinfo->code_size, p, &p);
6282         }
6283
6284         /* Exception table */
6285         if (cfg->compile_llvm) {
6286                 /*
6287                  * When using LLVM, we can't emit some data, like pc offsets, this reg/offset etc.,
6288                  * since the information is only available to llc. Instead, we let llc save the data
6289                  * into the LSDA, and read it from there at runtime.
6290                  */
6291                 /* The assembly might be CIL stripped so emit the data ourselves */
6292                 if (header->num_clauses)
6293                         encode_value (header->num_clauses, p, &p);
6294
6295                 for (k = 0; k < header->num_clauses; ++k) {
6296                         MonoExceptionClause *clause;
6297
6298                         clause = &header->clauses [k];
6299
6300                         encode_value (clause->flags, p, &p);
6301                         if (!(clause->flags == MONO_EXCEPTION_CLAUSE_FILTER || clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY)) {
6302                                 if (clause->data.catch_class) {
6303                                         guint8 *buf2, *p2;
6304                                         int len;
6305
6306                                         buf2 = (guint8 *)g_malloc (4096);
6307                                         p2 = buf2;
6308                                         encode_klass_ref (acfg, clause->data.catch_class, p2, &p2);
6309                                         len = p2 - buf2;
6310                                         g_assert (len < 4096);
6311                                         encode_value (len, p, &p);
6312                                         memcpy (p, buf2, len);
6313                                         p += p2 - buf2;
6314                                         g_free (buf2);
6315                                 } else {
6316                                         encode_value (0, p, &p);
6317                                 }
6318                         }
6319
6320                         /* Emit the IL ranges too, since they might not be available at runtime */
6321                         encode_value (clause->try_offset, p, &p);
6322                         encode_value (clause->try_len, p, &p);
6323                         encode_value (clause->handler_offset, p, &p);
6324                         encode_value (clause->handler_len, p, &p);
6325
6326                         /* Emit a list of nesting clauses */
6327                         for (i = 0; i < header->num_clauses; ++i) {
6328                                 gint32 cindex1 = k;
6329                                 MonoExceptionClause *clause1 = &header->clauses [cindex1];
6330                                 gint32 cindex2 = i;
6331                                 MonoExceptionClause *clause2 = &header->clauses [cindex2];
6332
6333                                 if (cindex1 != cindex2 && clause1->try_offset >= clause2->try_offset && clause1->handler_offset <= clause2->handler_offset)
6334                                         encode_value (i, p, &p);
6335                         }
6336                         encode_value (-1, p, &p);
6337                 }
6338         } else {
6339                 if (jinfo->num_clauses)
6340                         encode_value (jinfo->num_clauses, p, &p);
6341
6342                 for (k = 0; k < jinfo->num_clauses; ++k) {
6343                         MonoJitExceptionInfo *ei = &jinfo->clauses [k];
6344
6345                         encode_value (ei->flags, p, &p);
6346 #ifdef MONO_CONTEXT_SET_LLVM_EXC_REG
6347                         /* Not used for catch clauses */
6348                         if (ei->flags != MONO_EXCEPTION_CLAUSE_NONE)
6349                                 encode_value (ei->exvar_offset, p, &p);
6350 #else
6351                         encode_value (ei->exvar_offset, p, &p);
6352 #endif
6353
6354                         if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER || ei->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
6355                                 encode_value ((gint)((guint8*)ei->data.filter - code), p, &p);
6356                         else {
6357                                 if (ei->data.catch_class) {
6358                                         guint8 *buf2, *p2;
6359                                         int len;
6360
6361                                         buf2 = (guint8 *)g_malloc (4096);
6362                                         p2 = buf2;
6363                                         encode_klass_ref (acfg, ei->data.catch_class, p2, &p2);
6364                                         len = p2 - buf2;
6365                                         g_assert (len < 4096);
6366                                         encode_value (len, p, &p);
6367                                         memcpy (p, buf2, len);
6368                                         p += p2 - buf2;
6369                                         g_free (buf2);
6370                                 } else {
6371                                         encode_value (0, p, &p);
6372                                 }
6373                         }
6374
6375                         encode_value ((gint)((guint8*)ei->try_start - code), p, &p);
6376                         encode_value ((gint)((guint8*)ei->try_end - code), p, &p);
6377                         encode_value ((gint)((guint8*)ei->handler_start - code), p, &p);
6378                 }
6379         }
6380
6381         if (jinfo->has_try_block_holes) {
6382                 MonoTryBlockHoleTableJitInfo *table = mono_jit_info_get_try_block_hole_table_info (jinfo);
6383                 for (i = 0; i < table->num_holes; ++i) {
6384                         MonoTryBlockHoleJitInfo *hole = &table->holes [i];
6385                         encode_value (hole->clause, p, &p);
6386                         encode_value (hole->length, p, &p);
6387                         encode_value (hole->offset, p, &p);
6388                 }
6389         }
6390
6391         if (jinfo->has_arch_eh_info) {
6392                 MonoArchEHJitInfo *eh_info;
6393
6394                 eh_info = mono_jit_info_get_arch_eh_info (jinfo);
6395                 encode_value (eh_info->stack_size, p, &p);
6396                 encode_value (eh_info->epilog_size, p, &p);
6397         }
6398
6399         if (jinfo->has_generic_jit_info) {
6400                 MonoGenericJitInfo *gi = mono_jit_info_get_generic_jit_info (jinfo);
6401                 MonoGenericSharingContext* gsctx = gi->generic_sharing_context;
6402                 guint8 *buf2, *p2;
6403                 int len;
6404
6405                 encode_value (gi->nlocs, p, &p);
6406                 if (gi->nlocs) {
6407                         for (i = 0; i < gi->nlocs; ++i) {
6408                                 MonoDwarfLocListEntry *entry = &gi->locations [i];
6409
6410                                 encode_value (entry->is_reg ? 1 : 0, p, &p);
6411                                 encode_value (entry->reg, p, &p);
6412                                 if (!entry->is_reg)
6413                                         encode_value (entry->offset, p, &p);
6414                                 if (i == 0)
6415                                         g_assert (entry->from == 0);
6416                                 else
6417                                         encode_value (entry->from, p, &p);
6418                                 encode_value (entry->to, p, &p);
6419                         }
6420                 } else {
6421                         if (!cfg->compile_llvm) {
6422                                 encode_value (gi->has_this ? 1 : 0, p, &p);
6423                                 encode_value (gi->this_reg, p, &p);
6424                                 encode_value (gi->this_offset, p, &p);
6425                         }
6426                 }
6427
6428                 /*
6429                  * Need to encode jinfo->method too, since it is not equal to 'method'
6430                  * when using generic sharing.
6431                  */
6432                 buf2 = (guint8 *)g_malloc (4096);
6433                 p2 = buf2;
6434                 encode_method_ref (acfg, jinfo->d.method, p2, &p2);
6435                 len = p2 - buf2;
6436                 g_assert (len < 4096);
6437                 encode_value (len, p, &p);
6438                 memcpy (p, buf2, len);
6439                 p += p2 - buf2;
6440                 g_free (buf2);
6441
6442                 if (gsctx && gsctx->is_gsharedvt) {
6443                         encode_value (1, p, &p);
6444                 } else {
6445                         encode_value (0, p, &p);
6446                 }
6447         }
6448
6449         if (seq_points_size)
6450                 p += mono_seq_point_info_write (seq_points, p);
6451
6452         g_assert (debug_info_size < buf_size);
6453
6454         encode_value (debug_info_size, p, &p);
6455         if (debug_info_size) {
6456                 memcpy (p, debug_info, debug_info_size);
6457                 p += debug_info_size;
6458                 g_free (debug_info);
6459         }
6460
6461         /* GC Map */
6462         if (cfg->gc_map) {
6463                 encode_value (cfg->gc_map_size, p, &p);
6464                 /* The GC map requires 4 bytes of alignment */
6465                 while ((gsize)p % 4)
6466                         p ++;
6467                 memcpy (p, cfg->gc_map, cfg->gc_map_size);
6468                 p += cfg->gc_map_size;
6469         }
6470
6471         acfg->stats.ex_info_size += p - buf;
6472
6473         g_assert (p - buf < buf_size);
6474
6475         /* Emit info */
6476         /* The GC Map requires 4 byte alignment */
6477         cfg->ex_info_offset = add_to_blob_aligned (acfg, buf, p - buf, cfg->gc_map ? 4 : 1);
6478         g_free (buf);
6479 }
6480
6481 static guint32
6482 emit_klass_info (MonoAotCompile *acfg, guint32 token)
6483 {
6484         ERROR_DECL (error);
6485         MonoClass *klass = mono_class_get_checked (acfg->image, token, error);
6486         guint8 *p, *buf;
6487         int i, buf_size, res;
6488         gboolean no_special_static, cant_encode;
6489         gpointer iter = NULL;
6490
6491         if (!klass) {
6492                 mono_error_cleanup (error);
6493
6494                 buf_size = 16;
6495
6496                 p = buf = (guint8 *)g_malloc (buf_size);
6497
6498                 /* Mark as unusable */
6499                 encode_value (-1, p, &p);
6500
6501                 res = add_to_blob (acfg, buf, p - buf);
6502                 g_free (buf);
6503
6504                 return res;
6505         }
6506
6507         buf_size = 10240 + (klass->vtable_size * 16);
6508         p = buf = (guint8 *)g_malloc (buf_size);
6509
6510         g_assert (klass);
6511
6512         mono_class_init (klass);
6513
6514         mono_class_get_nested_types (klass, &iter);
6515         g_assert (klass->nested_classes_inited);
6516
6517         mono_class_setup_vtable (klass);
6518
6519         /*
6520          * Emit all the information which is required for creating vtables so
6521          * the runtime does not need to create the MonoMethod structures which
6522          * take up a lot of space.
6523          */
6524
6525         no_special_static = !mono_class_has_special_static_fields (klass);
6526
6527         /* Check whenever we have enough info to encode the vtable */
6528         cant_encode = FALSE;
6529         for (i = 0; i < klass->vtable_size; ++i) {
6530                 MonoMethod *cm = klass->vtable [i];
6531
6532                 if (cm && mono_method_signature (cm)->is_inflated && !g_hash_table_lookup (acfg->token_info_hash, cm))
6533                         cant_encode = TRUE;
6534         }
6535
6536         mono_class_has_finalizer (klass);
6537         if (mono_class_has_failure (klass))
6538                 cant_encode = TRUE;
6539
6540         if (mono_class_is_gtd (klass) || cant_encode) {
6541                 encode_value (-1, p, &p);
6542         } else {
6543                 gboolean has_nested = mono_class_get_nested_classes_property (klass) != NULL;
6544                 encode_value (klass->vtable_size, p, &p);
6545                 encode_value ((klass->has_weak_fields << 9) | (mono_class_is_gtd (klass) ? (1 << 8) : 0) | (no_special_static << 7) | (klass->has_static_refs << 6) | (klass->has_references << 5) | ((klass->blittable << 4) | (has_nested ? 1 : 0) << 3) | (klass->has_cctor << 2) | (klass->has_finalize << 1) | klass->ghcimpl, p, &p);
6546                 if (klass->has_cctor)
6547                         encode_method_ref (acfg, mono_class_get_cctor (klass), p, &p);
6548                 if (klass->has_finalize)
6549                         encode_method_ref (acfg, mono_class_get_finalizer (klass), p, &p);
6550
6551                 encode_value (klass->instance_size, p, &p);
6552                 encode_value (mono_class_data_size (klass), p, &p);
6553                 encode_value (klass->packing_size, p, &p);
6554                 encode_value (klass->min_align, p, &p);
6555
6556                 for (i = 0; i < klass->vtable_size; ++i) {
6557                         MonoMethod *cm = klass->vtable [i];
6558
6559                         if (cm)
6560                                 encode_method_ref (acfg, cm, p, &p);
6561                         else
6562                                 encode_value (0, p, &p);
6563                 }
6564         }
6565
6566         acfg->stats.class_info_size += p - buf;
6567
6568         g_assert (p - buf < buf_size);
6569         res = add_to_blob (acfg, buf, p - buf);
6570         g_free (buf);
6571
6572         return res;
6573 }
6574
6575 static char*
6576 get_plt_entry_debug_sym (MonoAotCompile *acfg, MonoJumpInfo *ji, GHashTable *cache)
6577 {
6578         char *debug_sym = NULL;
6579         char *prefix;
6580
6581         if (acfg->llvm && llvm_acfg->aot_opts.static_link) {
6582                 /* Need to add a prefix to create unique symbols */
6583                 prefix = g_strdup_printf ("plt_%s_", acfg->assembly_name_sym);
6584         } else {
6585 #if defined(TARGET_WIN32) && defined(TARGET_X86)
6586                 prefix = mangle_symbol_alloc ("plt_");
6587 #else
6588                 prefix = g_strdup ("plt_");
6589 #endif
6590         }
6591
6592         switch (ji->type) {
6593         case MONO_PATCH_INFO_METHOD:
6594                 debug_sym = get_debug_sym (ji->data.method, prefix, cache);
6595                 break;
6596         case MONO_PATCH_INFO_INTERNAL_METHOD:
6597                 debug_sym = g_strdup_printf ("%s_jit_icall_%s", prefix, ji->data.name);
6598                 break;
6599         case MONO_PATCH_INFO_RGCTX_FETCH:
6600                 debug_sym = g_strdup_printf ("%s_rgctx_fetch_%d", prefix, acfg->label_generator ++);
6601                 break;
6602         case MONO_PATCH_INFO_ICALL_ADDR:
6603         case MONO_PATCH_INFO_ICALL_ADDR_CALL: {
6604                 char *s = get_debug_sym (ji->data.method, "", cache);
6605
6606                 debug_sym = g_strdup_printf ("%s_icall_native_%s", prefix, s);
6607                 g_free (s);
6608                 break;
6609         }
6610         case MONO_PATCH_INFO_JIT_ICALL_ADDR:
6611                 debug_sym = g_strdup_printf ("%s_jit_icall_native_%s", prefix, ji->data.name);
6612                 break;
6613         default:
6614                 break;
6615         }
6616
6617         g_free (prefix);
6618
6619         return sanitize_symbol (acfg, debug_sym);
6620 }
6621
6622 /*
6623  * Calls made from AOTed code are routed through a table of jumps similar to the
6624  * ELF PLT (Program Linkage Table). Initially the PLT entries jump to code which transfers
6625  * control to the AOT runtime through a trampoline.
6626  */
6627 static void
6628 emit_plt (MonoAotCompile *acfg)
6629 {
6630         int i;
6631
6632         if (acfg->aot_opts.llvm_only) {
6633                 g_assert (acfg->plt_offset == 1);
6634                 return;
6635         }
6636
6637         emit_line (acfg);
6638
6639         emit_section_change (acfg, ".text", 0);
6640         emit_alignment_code (acfg, 16);
6641         emit_info_symbol (acfg, "plt");
6642         emit_label (acfg, acfg->plt_symbol);
6643
6644         for (i = 0; i < acfg->plt_offset; ++i) {
6645                 char *debug_sym = NULL;
6646                 MonoPltEntry *plt_entry = NULL;
6647
6648                 if (i == 0)
6649                         /*
6650                          * The first plt entry is unused.
6651                          */
6652                         continue;
6653
6654                 plt_entry = (MonoPltEntry *)g_hash_table_lookup (acfg->plt_offset_to_entry, GUINT_TO_POINTER (i));
6655
6656                 debug_sym = plt_entry->debug_sym;
6657
6658                 if (acfg->thumb_mixed && !plt_entry->jit_used)
6659                         /* Emit only a thumb version */
6660                         continue;
6661
6662                 /* Skip plt entries not actually called */
6663                 if (!plt_entry->jit_used && !plt_entry->llvm_used)
6664                         continue;
6665
6666                 if (acfg->llvm && !acfg->thumb_mixed) {
6667                         emit_label (acfg, plt_entry->llvm_symbol);
6668                         if (acfg->llvm) {
6669                                 emit_global_inner (acfg, plt_entry->llvm_symbol, TRUE);
6670 #if defined(TARGET_MACH)
6671                                 fprintf (acfg->fp, ".private_extern %s\n", plt_entry->llvm_symbol);
6672 #endif
6673                         }
6674                 }
6675
6676                 if (debug_sym) {
6677                         if (acfg->need_no_dead_strip) {
6678                                 emit_unset_mode (acfg);
6679                                 fprintf (acfg->fp, "    .no_dead_strip %s\n", debug_sym);
6680                         }
6681                         emit_local_symbol (acfg, debug_sym, NULL, TRUE);
6682                         emit_label (acfg, debug_sym);
6683                 }
6684
6685                 emit_label (acfg, plt_entry->symbol);
6686
6687                 arch_emit_plt_entry (acfg, acfg->got_symbol, (acfg->plt_got_offset_base + i) * sizeof (gpointer), acfg->plt_got_info_offsets [i]);
6688
6689                 if (debug_sym)
6690                         emit_symbol_size (acfg, debug_sym, ".");
6691         }
6692
6693         if (acfg->thumb_mixed) {
6694                 /* Make sure the ARM symbols don't alias the thumb ones */
6695                 emit_zero_bytes (acfg, 16);
6696
6697                 /*
6698                  * Emit a separate set of PLT entries using thumb2 which is called by LLVM generated
6699                  * code.
6700                  */
6701                 for (i = 0; i < acfg->plt_offset; ++i) {
6702                         char *debug_sym = NULL;
6703                         MonoPltEntry *plt_entry = NULL;
6704
6705                         if (i == 0)
6706                                 continue;
6707
6708                         plt_entry = (MonoPltEntry *)g_hash_table_lookup (acfg->plt_offset_to_entry, GUINT_TO_POINTER (i));
6709
6710                         /* Skip plt entries not actually called by LLVM code */
6711                         if (!plt_entry->llvm_used)
6712                                 continue;
6713
6714                         if (acfg->aot_opts.write_symbols) {
6715                                 if (plt_entry->debug_sym)
6716                                         debug_sym = g_strdup_printf ("%s_thumb", plt_entry->debug_sym);
6717                         }
6718
6719                         if (debug_sym) {
6720 #if defined(TARGET_MACH)
6721                                 fprintf (acfg->fp, "    .thumb_func %s\n", debug_sym);
6722                                 fprintf (acfg->fp, "    .no_dead_strip %s\n", debug_sym);
6723 #endif
6724                                 emit_local_symbol (acfg, debug_sym, NULL, TRUE);
6725                                 emit_label (acfg, debug_sym);
6726                         }
6727                         fprintf (acfg->fp, "\n.thumb_func\n");
6728
6729                         emit_label (acfg, plt_entry->llvm_symbol);
6730
6731                         if (acfg->llvm)
6732                                 emit_global_inner (acfg, plt_entry->llvm_symbol, TRUE);
6733
6734                         arch_emit_llvm_plt_entry (acfg, acfg->got_symbol, (acfg->plt_got_offset_base + i) * sizeof (gpointer), acfg->plt_got_info_offsets [i]);
6735
6736                         if (debug_sym) {
6737                                 emit_symbol_size (acfg, debug_sym, ".");
6738                                 g_free (debug_sym);
6739                         }
6740                 }
6741         }
6742
6743         emit_symbol_size (acfg, acfg->plt_symbol, ".");
6744
6745         emit_info_symbol (acfg, "plt_end");
6746
6747         arch_emit_unwind_info_sections (acfg, "plt", "plt_end", NULL);
6748 }
6749
6750 /*
6751  * emit_trampoline_full:
6752  *
6753  *   If EMIT_TINFO is TRUE, emit additional information which can be used to create a MonoJitInfo for this trampoline by
6754  * create_jit_info_for_trampoline ().
6755  */
6756 static G_GNUC_UNUSED void
6757 emit_trampoline_full (MonoAotCompile *acfg, int got_offset, MonoTrampInfo *info, gboolean emit_tinfo)
6758 {
6759         char start_symbol [MAX_SYMBOL_SIZE];
6760         char end_symbol [MAX_SYMBOL_SIZE];
6761         char symbol [MAX_SYMBOL_SIZE];
6762         guint32 buf_size, info_offset;
6763         MonoJumpInfo *patch_info;
6764         guint8 *buf, *p;
6765         GPtrArray *patches;
6766         char *name;
6767         guint8 *code;
6768         guint32 code_size;
6769         MonoJumpInfo *ji;
6770         GSList *unwind_ops;
6771
6772         g_assert (info);
6773
6774         name = info->name;
6775         code = info->code;
6776         code_size = info->code_size;
6777         ji = info->ji;
6778         unwind_ops = info->unwind_ops;
6779
6780         /* Emit code */
6781
6782         sprintf (start_symbol, "%s%s", acfg->user_symbol_prefix, name);
6783
6784         emit_section_change (acfg, ".text", 0);
6785         emit_global (acfg, start_symbol, TRUE);
6786         emit_alignment_code (acfg, AOT_FUNC_ALIGNMENT);
6787         emit_label (acfg, start_symbol);
6788
6789         sprintf (symbol, "%snamed_%s", acfg->temp_prefix, name);
6790         emit_label (acfg, symbol);
6791
6792         /*
6793          * The code should access everything through the GOT, so we pass
6794          * TRUE here.
6795          */
6796         emit_and_reloc_code (acfg, NULL, code, code_size, ji, TRUE, NULL);
6797
6798         emit_symbol_size (acfg, start_symbol, ".");
6799
6800         if (emit_tinfo) {
6801                 sprintf (end_symbol, "%snamede_%s", acfg->temp_prefix, name);
6802                 emit_label (acfg, end_symbol);
6803         }
6804
6805         /* Emit info */
6806
6807         /* Sort relocations */
6808         patches = g_ptr_array_new ();
6809         for (patch_info = ji; patch_info; patch_info = patch_info->next)
6810                 if (patch_info->type != MONO_PATCH_INFO_NONE)
6811                         g_ptr_array_add (patches, patch_info);
6812         g_ptr_array_sort (patches, compare_patches);
6813
6814         buf_size = patches->len * 128 + 128;
6815         buf = (guint8 *)g_malloc (buf_size);
6816         p = buf;
6817
6818         encode_patch_list (acfg, patches, patches->len, FALSE, got_offset, p, &p);
6819         g_assert (p - buf < buf_size);
6820         g_ptr_array_free (patches, TRUE);
6821
6822         sprintf (symbol, "%s%s_p", acfg->user_symbol_prefix, name);
6823
6824         info_offset = add_to_blob (acfg, buf, p - buf);
6825
6826         emit_section_change (acfg, RODATA_SECT, 0);
6827         emit_global (acfg, symbol, FALSE);
6828         emit_label (acfg, symbol);
6829
6830         emit_int32 (acfg, info_offset);
6831
6832         if (emit_tinfo) {
6833                 guint8 *encoded;
6834                 guint32 encoded_len;
6835                 guint32 uw_offset;
6836
6837                 /*
6838                  * Emit additional information which can be used to reconstruct a partial MonoTrampInfo.
6839                  */
6840                 encoded = mono_unwind_ops_encode (info->unwind_ops, &encoded_len);
6841                 uw_offset = get_unwind_info_offset (acfg, encoded, encoded_len);
6842                 g_free (encoded);
6843
6844                 emit_symbol_diff (acfg, end_symbol, start_symbol, 0);
6845                 emit_int32 (acfg, uw_offset);
6846         }
6847
6848         /* Emit debug info */
6849         if (unwind_ops) {
6850                 char symbol2 [MAX_SYMBOL_SIZE];
6851
6852                 sprintf (symbol, "%s", name);
6853                 sprintf (symbol2, "%snamed_%s", acfg->temp_prefix, name);
6854
6855                 arch_emit_unwind_info_sections (acfg, start_symbol, end_symbol, unwind_ops);
6856
6857                 if (acfg->dwarf)
6858                         mono_dwarf_writer_emit_trampoline (acfg->dwarf, symbol, symbol2, NULL, NULL, code_size, unwind_ops);
6859         }
6860
6861         g_free (buf);
6862 }
6863
6864 static G_GNUC_UNUSED void
6865 emit_trampoline (MonoAotCompile *acfg, int got_offset, MonoTrampInfo *info)
6866 {
6867         emit_trampoline_full (acfg, got_offset, info, TRUE);
6868 }
6869
6870 static void
6871 emit_trampolines (MonoAotCompile *acfg)
6872 {
6873         char symbol [MAX_SYMBOL_SIZE];
6874         char end_symbol [MAX_SYMBOL_SIZE];
6875         int i, tramp_got_offset;
6876         int ntype;
6877 #ifdef MONO_ARCH_HAVE_FULL_AOT_TRAMPOLINES
6878         int tramp_type;
6879 #endif
6880
6881         if (!mono_aot_mode_is_full (&acfg->aot_opts) || acfg->aot_opts.llvm_only)
6882                 return;
6883
6884         g_assert (acfg->image->assembly);
6885
6886         /* Currently, we emit most trampolines into the mscorlib AOT image. */
6887         if (strcmp (acfg->image->assembly->aname.name, "mscorlib") == 0) {
6888 #ifdef MONO_ARCH_HAVE_FULL_AOT_TRAMPOLINES
6889                 MonoTrampInfo *info;
6890
6891                 /*
6892                  * Emit the generic trampolines.
6893                  *
6894                  * We could save some code by treating the generic trampolines as a wrapper
6895                  * method, but that approach has its own complexities, so we choose the simpler
6896                  * method.
6897                  */
6898                 for (tramp_type = 0; tramp_type < MONO_TRAMPOLINE_NUM; ++tramp_type) {
6899                         /* we overload the boolean here to indicate the slightly different trampoline needed, see mono_arch_create_generic_trampoline() */
6900 #ifdef DISABLE_REMOTING
6901                         if (tramp_type == MONO_TRAMPOLINE_GENERIC_VIRTUAL_REMOTING)
6902                                 continue;
6903 #endif
6904                         mono_arch_create_generic_trampoline ((MonoTrampolineType)tramp_type, &info, acfg->aot_opts.use_trampolines_page? 2: TRUE);
6905                         emit_trampoline (acfg, acfg->got_offset, info);
6906                         mono_tramp_info_free (info);
6907                 }
6908
6909                 /* Emit the exception related code pieces */
6910                 mono_arch_get_restore_context (&info, TRUE);
6911                 emit_trampoline (acfg, acfg->got_offset, info);
6912                 mono_tramp_info_free (info);
6913
6914                 mono_arch_get_call_filter (&info, TRUE);
6915                 emit_trampoline (acfg, acfg->got_offset, info);
6916                 mono_tramp_info_free (info);
6917
6918                 mono_arch_get_throw_exception (&info, TRUE);
6919                 emit_trampoline (acfg, acfg->got_offset, info);
6920                 mono_tramp_info_free (info);
6921
6922                 mono_arch_get_rethrow_exception (&info, TRUE);
6923                 emit_trampoline (acfg, acfg->got_offset, info);
6924                 mono_tramp_info_free (info);
6925
6926                 mono_arch_get_throw_corlib_exception (&info, TRUE);
6927                 emit_trampoline (acfg, acfg->got_offset, info);
6928                 mono_tramp_info_free (info);
6929
6930 #ifdef MONO_ARCH_HAVE_SDB_TRAMPOLINES
6931                 mono_arch_create_sdb_trampoline (TRUE, &info, TRUE);
6932                 emit_trampoline (acfg, acfg->got_offset, info);
6933                 mono_tramp_info_free (info);
6934
6935                 mono_arch_create_sdb_trampoline (FALSE, &info, TRUE);
6936                 emit_trampoline (acfg, acfg->got_offset, info);
6937                 mono_tramp_info_free (info);
6938 #endif
6939
6940 #ifdef MONO_ARCH_GSHAREDVT_SUPPORTED
6941                 mono_arch_get_gsharedvt_trampoline (&info, TRUE);
6942                 if (info) {
6943                         emit_trampoline_full (acfg, acfg->got_offset, info, TRUE);
6944
6945                         /* Create a separate out trampoline for more information in stack traces */
6946                         info->name = g_strdup ("gsharedvt_out_trampoline");
6947                         emit_trampoline_full (acfg, acfg->got_offset, info, TRUE);
6948                         mono_tramp_info_free (info);
6949                 }
6950 #endif
6951
6952 #if defined(MONO_ARCH_HAVE_GET_TRAMPOLINES)
6953                 {
6954                         GSList *l = mono_arch_get_trampolines (TRUE);
6955
6956                         while (l) {
6957                                 MonoTrampInfo *info = (MonoTrampInfo *)l->data;
6958
6959                                 emit_trampoline (acfg, acfg->got_offset, info);
6960                                 l = l->next;
6961                         }
6962                 }
6963 #endif
6964
6965                 for (i = 0; i < acfg->aot_opts.nrgctx_fetch_trampolines; ++i) {
6966                         int offset;
6967
6968                         offset = MONO_RGCTX_SLOT_MAKE_RGCTX (i);
6969                         mono_arch_create_rgctx_lazy_fetch_trampoline (offset, &info, TRUE);
6970                         emit_trampoline (acfg, acfg->got_offset, info);
6971                         mono_tramp_info_free (info);
6972
6973                         offset = MONO_RGCTX_SLOT_MAKE_MRGCTX (i);
6974                         mono_arch_create_rgctx_lazy_fetch_trampoline (offset, &info, TRUE);
6975                         emit_trampoline (acfg, acfg->got_offset, info);
6976                         mono_tramp_info_free (info);
6977                 }
6978
6979 #ifdef MONO_ARCH_HAVE_GENERAL_RGCTX_LAZY_FETCH_TRAMPOLINE
6980                 mono_arch_create_general_rgctx_lazy_fetch_trampoline (&info, TRUE);
6981                 emit_trampoline (acfg, acfg->got_offset, info);
6982                 mono_tramp_info_free (info);
6983 #endif
6984
6985                 {
6986                         GSList *l;
6987
6988                         /* delegate_invoke_impl trampolines */
6989                         l = mono_arch_get_delegate_invoke_impls ();
6990                         while (l) {
6991                                 MonoTrampInfo *info = (MonoTrampInfo *)l->data;
6992
6993                                 emit_trampoline (acfg, acfg->got_offset, info);
6994                                 l = l->next;
6995                         }
6996                 }
6997
6998                 if (mono_aot_mode_is_interp (&acfg->aot_opts)) {
6999                         mono_arch_get_interp_to_native_trampoline (&info);
7000                         emit_trampoline (acfg, acfg->got_offset, info);
7001                 }
7002
7003 #endif /* #ifdef MONO_ARCH_HAVE_FULL_AOT_TRAMPOLINES */
7004
7005                 /* Emit trampolines which are numerous */
7006
7007                 /*
7008                  * These include the following:
7009                  * - specific trampolines
7010                  * - static rgctx invoke trampolines
7011                  * - imt trampolines
7012                  * These trampolines have the same code, they are parameterized by GOT
7013                  * slots.
7014                  * They are defined in this file, in the arch_... routines instead of
7015                  * in tramp-<ARCH>.c, since it is easier to do it this way.
7016                  */
7017
7018                 /*
7019                  * When running in aot-only mode, we can't create specific trampolines at
7020                  * runtime, so we create a few, and save them in the AOT file.
7021                  * Normal trampolines embed their argument as a literal inside the
7022                  * trampoline code, we can't do that here, so instead we embed an offset
7023                  * which needs to be added to the trampoline address to get the address of
7024                  * the GOT slot which contains the argument value.
7025                  * The generated trampolines jump to the generic trampolines using another
7026                  * GOT slot, which will be setup by the AOT loader to point to the
7027                  * generic trampoline code of the given type.
7028                  */
7029
7030                 /*
7031                  * FIXME: Maybe we should use more specific trampolines (i.e. one class init for
7032                  * each class).
7033                  */
7034
7035                 emit_section_change (acfg, ".text", 0);
7036
7037                 tramp_got_offset = acfg->got_offset;
7038
7039                 for (ntype = 0; ntype < MONO_AOT_TRAMP_NUM; ++ntype) {
7040                         switch (ntype) {
7041                         case MONO_AOT_TRAMP_SPECIFIC:
7042                                 sprintf (symbol, "specific_trampolines");
7043                                 break;
7044                         case MONO_AOT_TRAMP_STATIC_RGCTX:
7045                                 sprintf (symbol, "static_rgctx_trampolines");
7046                                 break;
7047                         case MONO_AOT_TRAMP_IMT:
7048                                 sprintf (symbol, "imt_trampolines");
7049                                 break;
7050                         case MONO_AOT_TRAMP_GSHAREDVT_ARG:
7051                                 sprintf (symbol, "gsharedvt_arg_trampolines");
7052                                 break;
7053                         default:
7054                                 g_assert_not_reached ();
7055                         }
7056
7057                         sprintf (end_symbol, "%s_e", symbol);
7058
7059                         if (acfg->aot_opts.write_symbols)
7060                                 emit_local_symbol (acfg, symbol, end_symbol, TRUE);
7061
7062                         emit_alignment_code (acfg, AOT_FUNC_ALIGNMENT);
7063                         emit_info_symbol (acfg, symbol);
7064
7065                         acfg->trampoline_got_offset_base [ntype] = tramp_got_offset;
7066
7067                         for (i = 0; i < acfg->num_trampolines [ntype]; ++i) {
7068                                 int tramp_size = 0;
7069
7070                                 switch (ntype) {
7071                                 case MONO_AOT_TRAMP_SPECIFIC:
7072                                         arch_emit_specific_trampoline (acfg, tramp_got_offset, &tramp_size);
7073                                         tramp_got_offset += 2;
7074                                 break;
7075                                 case MONO_AOT_TRAMP_STATIC_RGCTX:
7076                                         arch_emit_static_rgctx_trampoline (acfg, tramp_got_offset, &tramp_size);
7077                                         tramp_got_offset += 2;
7078                                         break;
7079                                 case MONO_AOT_TRAMP_IMT:
7080                                         arch_emit_imt_trampoline (acfg, tramp_got_offset, &tramp_size);
7081                                         tramp_got_offset += 1;
7082                                         break;
7083                                 case MONO_AOT_TRAMP_GSHAREDVT_ARG:
7084                                         arch_emit_gsharedvt_arg_trampoline (acfg, tramp_got_offset, &tramp_size);
7085                                         tramp_got_offset += 2;
7086                                         break;
7087                                 default:
7088                                         g_assert_not_reached ();
7089                                 }
7090                                 if (!acfg->trampoline_size [ntype]) {
7091                                         g_assert (tramp_size);
7092                                         acfg->trampoline_size [ntype] = tramp_size;
7093                                 }
7094                         }
7095
7096                         emit_label (acfg, end_symbol);
7097                         emit_int32 (acfg, 0);
7098                 }
7099
7100                 arch_emit_specific_trampoline_pages (acfg);
7101
7102                 /* Reserve some entries at the end of the GOT for our use */
7103                 acfg->num_trampoline_got_entries = tramp_got_offset - acfg->got_offset;
7104         }
7105
7106         acfg->got_offset += acfg->num_trampoline_got_entries;
7107 }
7108
7109 static gboolean
7110 str_begins_with (const char *str1, const char *str2)
7111 {
7112         int len = strlen (str2);
7113         return strncmp (str1, str2, len) == 0;
7114 }
7115
7116 void*
7117 mono_aot_readonly_field_override (MonoClassField *field)
7118 {
7119         ReadOnlyValue *rdv;
7120         for (rdv = readonly_values; rdv; rdv = rdv->next) {
7121                 char *p = rdv->name;
7122                 int len;
7123                 len = strlen (field->parent->name_space);
7124                 if (strncmp (p, field->parent->name_space, len))
7125                         continue;
7126                 p += len;
7127                 if (*p++ != '.')
7128                         continue;
7129                 len = strlen (field->parent->name);
7130                 if (strncmp (p, field->parent->name, len))
7131                         continue;
7132                 p += len;
7133                 if (*p++ != '.')
7134                         continue;
7135                 if (strcmp (p, field->name))
7136                         continue;
7137                 switch (rdv->type) {
7138                 case MONO_TYPE_I1:
7139                         return &rdv->value.i1;
7140                 case MONO_TYPE_I2:
7141                         return &rdv->value.i2;
7142                 case MONO_TYPE_I4:
7143                         return &rdv->value.i4;
7144                 default:
7145                         break;
7146                 }
7147         }
7148         return NULL;
7149 }
7150
7151 static void
7152 add_readonly_value (MonoAotOptions *opts, const char *val)
7153 {
7154         ReadOnlyValue *rdv;
7155         const char *fval;
7156         const char *tval;
7157         /* the format of val is:
7158          * namespace.typename.fieldname=type/value
7159          * type can be i1 for uint8/int8/boolean, i2 for uint16/int16/char, i4 for uint32/int32
7160          */
7161         fval = strrchr (val, '/');
7162         if (!fval) {
7163                 fprintf (stderr, "AOT : invalid format for readonly field '%s', missing /.\n", val);
7164                 exit (1);
7165         }
7166         tval = strrchr (val, '=');
7167         if (!tval) {
7168                 fprintf (stderr, "AOT : invalid format for readonly field '%s', missing =.\n", val);
7169                 exit (1);
7170         }
7171         rdv = g_new0 (ReadOnlyValue, 1);
7172         rdv->name = (char *)g_malloc0 (tval - val + 1);
7173         memcpy (rdv->name, val, tval - val);
7174         tval++;
7175         fval++;
7176         if (strncmp (tval, "i1", 2) == 0) {
7177                 rdv->value.i1 = atoi (fval);
7178                 rdv->type = MONO_TYPE_I1;
7179         } else if (strncmp (tval, "i2", 2) == 0) {
7180                 rdv->value.i2 = atoi (fval);
7181                 rdv->type = MONO_TYPE_I2;
7182         } else if (strncmp (tval, "i4", 2) == 0) {
7183                 rdv->value.i4 = atoi (fval);
7184                 rdv->type = MONO_TYPE_I4;
7185         } else {
7186                 fprintf (stderr, "AOT : unsupported type for readonly field '%s'.\n", tval);
7187                 exit (1);
7188         }
7189         rdv->next = readonly_values;
7190         readonly_values = rdv;
7191 }
7192
7193 static gchar *
7194 clean_path (gchar * path)
7195 {
7196         if (!path)
7197                 return NULL;
7198
7199         if (g_str_has_suffix (path, G_DIR_SEPARATOR_S))
7200                 return path;
7201
7202         gchar *clean = g_strconcat (path, G_DIR_SEPARATOR_S, NULL);
7203         g_free (path);
7204
7205         return clean;
7206 }
7207
7208 static gchar *
7209 wrap_path (gchar * path)
7210 {
7211         int len;
7212         if (!path)
7213                 return NULL;
7214
7215         // If the string contains no spaces, just return the original string.
7216         if (strstr (path, " ") == NULL)
7217                 return path;
7218
7219         // If the string is already wrapped in quotes, return it.
7220         len = strlen (path);
7221         if (len >= 2 && path[0] == '\"' && path[len-1] == '\"')
7222                 return path;
7223
7224         // If the string contains spaces, then wrap it in quotes.
7225         gchar *clean = g_strdup_printf ("\"%s\"", path);
7226
7227         return clean;
7228 }
7229
7230 // Duplicate a char range and add it to a ptrarray, but only if it is nonempty
7231 static void
7232 ptr_array_add_range_if_nonempty(GPtrArray *args, gchar const *start, gchar const *end)
7233 {
7234         ptrdiff_t len = end-start;
7235         if (len > 0)
7236                 g_ptr_array_add (args, g_strndup (start, len));
7237 }
7238
7239 static GPtrArray *
7240 mono_aot_split_options (const char *aot_options)
7241 {
7242         enum MonoAotOptionState {
7243                 MONO_AOT_OPTION_STATE_DEFAULT,
7244                 MONO_AOT_OPTION_STATE_STRING,
7245                 MONO_AOT_OPTION_STATE_ESCAPE,
7246         };
7247
7248         GPtrArray *args = g_ptr_array_new ();
7249         enum MonoAotOptionState state = MONO_AOT_OPTION_STATE_DEFAULT;
7250         gchar const *opt_start = aot_options;
7251         gboolean end_of_string = FALSE;
7252         gchar cur;
7253
7254         g_return_val_if_fail (aot_options != NULL, NULL);
7255
7256         while ((cur = *aot_options) != '\0') {
7257                 if (state == MONO_AOT_OPTION_STATE_ESCAPE)
7258                         goto next;
7259
7260                 switch (cur) {
7261                 case '"':
7262                         // If we find a quote, then if we're in the default case then
7263                         // it means we've found the start of a string, if not then it
7264                         // means we've found the end of the string and should switch
7265                         // back to the default case.
7266                         switch (state) {
7267                         case MONO_AOT_OPTION_STATE_DEFAULT:
7268                                 state = MONO_AOT_OPTION_STATE_STRING;
7269                                 break;
7270                         case MONO_AOT_OPTION_STATE_STRING:
7271                                 state = MONO_AOT_OPTION_STATE_DEFAULT;
7272                                 break;
7273                         case MONO_AOT_OPTION_STATE_ESCAPE:
7274                                 g_assert_not_reached ();
7275                                 break;
7276                         }
7277                         break;
7278                 case '\\':
7279                         // If we've found an escaping operator, then this means we
7280                         // should not process the next character if inside a string.
7281                         if (state == MONO_AOT_OPTION_STATE_STRING)
7282                                 state = MONO_AOT_OPTION_STATE_ESCAPE;
7283                         break;
7284                 case ',':
7285                         // If we're in the default state then this means we've found
7286                         // an option, store it for later processing.
7287                         if (state == MONO_AOT_OPTION_STATE_DEFAULT)
7288                                 goto new_opt;
7289                         break;
7290                 }
7291
7292         next:
7293                 aot_options++;
7294         restart:
7295                 // If the next character is end of string, then process the last option.
7296                 if (*(aot_options) == '\0') {
7297                         end_of_string = TRUE;
7298                         goto new_opt;
7299                 }
7300                 continue;
7301
7302         new_opt:
7303                 ptr_array_add_range_if_nonempty (args, opt_start, aot_options);
7304                 opt_start = ++aot_options;
7305                 if (end_of_string)
7306                         break;
7307                 goto restart; // Check for null and continue loop
7308         }
7309
7310         return args;
7311 }
7312
7313 static void
7314 mono_aot_parse_options (const char *aot_options, MonoAotOptions *opts)
7315 {
7316         GPtrArray* args;
7317
7318         args = mono_aot_split_options (aot_options ? aot_options : "");
7319         for (int i = 0; i < args->len; ++i) {
7320                 const char *arg = (const char *)g_ptr_array_index (args, i);
7321
7322                 if (str_begins_with (arg, "outfile=")) {
7323                         opts->outfile = g_strdup (arg + strlen ("outfile="));
7324                 } else if (str_begins_with (arg, "llvm-outfile=")) {
7325                         opts->llvm_outfile = g_strdup (arg + strlen ("llvm-outfile="));
7326                 } else if (str_begins_with (arg, "temp-path=")) {
7327                         opts->temp_path = clean_path (g_strdup (arg + strlen ("temp-path=")));
7328                 } else if (str_begins_with (arg, "save-temps")) {
7329                         opts->save_temps = TRUE;
7330                 } else if (str_begins_with (arg, "keep-temps")) {
7331                         opts->save_temps = TRUE;
7332                 } else if (str_begins_with (arg, "write-symbols")) {
7333                         opts->write_symbols = TRUE;
7334                 } else if (str_begins_with (arg, "no-write-symbols")) {
7335                         opts->write_symbols = FALSE;
7336                 // Intentionally undocumented -- one-off experiment
7337                 } else if (str_begins_with (arg, "metadata-only")) {
7338                         opts->metadata_only = TRUE;
7339                 } else if (str_begins_with (arg, "bind-to-runtime-version")) {
7340                         opts->bind_to_runtime_version = TRUE;
7341                 } else if (str_begins_with (arg, "full")) {
7342                         opts->mode = MONO_AOT_MODE_FULL;
7343                 } else if (str_begins_with (arg, "hybrid")) {
7344                         opts->mode = MONO_AOT_MODE_HYBRID;
7345                 } else if (str_begins_with (arg, "interp")) {
7346                         opts->mode = MONO_AOT_MODE_INTERP;
7347                 } else if (str_begins_with (arg, "threads=")) {
7348                         opts->nthreads = atoi (arg + strlen ("threads="));
7349                 } else if (str_begins_with (arg, "static")) {
7350                         opts->static_link = TRUE;
7351                         opts->no_dlsym = TRUE;
7352                 } else if (str_begins_with (arg, "asmonly")) {
7353                         opts->asm_only = TRUE;
7354                 } else if (str_begins_with (arg, "asmwriter")) {
7355                         opts->asm_writer = TRUE;
7356                 } else if (str_begins_with (arg, "nodebug")) {
7357                         opts->nodebug = TRUE;
7358                 } else if (str_begins_with (arg, "dwarfdebug")) {
7359                         opts->dwarf_debug = TRUE;
7360                 // Intentionally undocumented -- No one remembers what this does. It appears to be ARM-only
7361                 } else if (str_begins_with (arg, "nopagetrampolines")) {
7362                         opts->use_trampolines_page = FALSE;
7363                 } else if (str_begins_with (arg, "ntrampolines=")) {
7364                         opts->ntrampolines = atoi (arg + strlen ("ntrampolines="));
7365                 } else if (str_begins_with (arg, "nrgctx-trampolines=")) {
7366                         opts->nrgctx_trampolines = atoi (arg + strlen ("nrgctx-trampolines="));
7367                 } else if (str_begins_with (arg, "nrgctx-fetch-trampolines=")) {
7368                         opts->nrgctx_fetch_trampolines = atoi (arg + strlen ("nrgctx-fetch-trampolines="));
7369                 } else if (str_begins_with (arg, "nimt-trampolines=")) {
7370                         opts->nimt_trampolines = atoi (arg + strlen ("nimt-trampolines="));
7371                 } else if (str_begins_with (arg, "ngsharedvt-trampolines=")) {
7372                         opts->ngsharedvt_arg_trampolines = atoi (arg + strlen ("ngsharedvt-trampolines="));
7373                 } else if (str_begins_with (arg, "tool-prefix=")) {
7374                         opts->tool_prefix = g_strdup (arg + strlen ("tool-prefix="));
7375                 } else if (str_begins_with (arg, "ld-flags=")) {
7376                         opts->ld_flags = g_strdup (arg + strlen ("ld-flags="));
7377                 } else if (str_begins_with (arg, "soft-debug")) {
7378                         opts->soft_debug = TRUE;
7379                 // Intentionally undocumented x2-- deprecated
7380                 } else if (str_begins_with (arg, "gen-seq-points-file=")) {
7381                         fprintf (stderr, "Mono Warning: aot option gen-seq-points-file= is deprecated.\n");
7382                 } else if (str_begins_with (arg, "gen-seq-points-file")) {
7383                         fprintf (stderr, "Mono Warning: aot option gen-seq-points-file is deprecated.\n");
7384                 } else if (str_begins_with (arg, "msym-dir=")) {
7385                         debug_options.no_seq_points_compact_data = FALSE;
7386                         opts->gen_msym_dir = TRUE;
7387                         opts->gen_msym_dir_path = g_strdup (arg + strlen ("msym_dir="));;
7388                 } else if (str_begins_with (arg, "direct-pinvoke")) {
7389                         opts->direct_pinvoke = TRUE;
7390                 } else if (str_begins_with (arg, "direct-icalls")) {
7391                         opts->direct_icalls = TRUE;
7392                 } else if (str_begins_with (arg, "no-direct-calls")) {
7393                         opts->no_direct_calls = TRUE;
7394                 } else if (str_begins_with (arg, "print-skipped")) {
7395                         opts->print_skipped_methods = TRUE;
7396                 } else if (str_begins_with (arg, "stats")) {
7397                         opts->stats = TRUE;
7398                 // Intentionally undocumented-- has no known function other than to debug the compiler
7399                 } else if (str_begins_with (arg, "no-instances")) {
7400                         opts->no_instances = TRUE;
7401                 // Intentionally undocumented x4-- Used for internal debugging of compiler
7402                 } else if (str_begins_with (arg, "log-generics")) {
7403                         opts->log_generics = TRUE;
7404                 } else if (str_begins_with (arg, "log-instances=")) {
7405                         opts->log_instances = TRUE;
7406                         opts->instances_logfile_path = g_strdup (arg + strlen ("log-instances="));
7407                 } else if (str_begins_with (arg, "log-instances")) {
7408                         opts->log_instances = TRUE;
7409                 } else if (str_begins_with (arg, "internal-logfile=")) {
7410                         opts->logfile = g_strdup (arg + strlen ("internal-logfile="));
7411                 } else if (str_begins_with (arg, "dedup-skip")) {
7412                         opts->dedup = TRUE;
7413                 } else if (str_begins_with (arg, "dedup-include=")) {
7414                         opts->dedup_include = g_strdup (arg + strlen ("dedup-include="));
7415                 } else if (str_begins_with (arg, "mtriple=")) {
7416                         opts->mtriple = g_strdup (arg + strlen ("mtriple="));
7417                 } else if (str_begins_with (arg, "llvm-path=")) {
7418                         opts->llvm_path = clean_path (g_strdup (arg + strlen ("llvm-path=")));
7419                 } else if (!strcmp (arg, "llvm")) {
7420                         opts->llvm = TRUE;
7421                 } else if (str_begins_with (arg, "readonly-value=")) {
7422                         add_readonly_value (opts, arg + strlen ("readonly-value="));
7423                 } else if (str_begins_with (arg, "info")) {
7424                         printf ("AOT target setup: %s.\n", AOT_TARGET_STR);
7425                         exit (0);
7426                 // Intentionally undocumented: Used for precise stack maps, which are not available yet
7427                 } else if (str_begins_with (arg, "gc-maps")) {
7428                         mini_gc_enable_gc_maps_for_aot ();
7429                 // Intentionally undocumented: Used for internal debugging
7430                 } else if (str_begins_with (arg, "dump")) {
7431                         opts->dump_json = TRUE;
7432                 } else if (str_begins_with (arg, "llvmonly")) {
7433                         opts->mode = MONO_AOT_MODE_FULL;
7434                         opts->llvm = TRUE;
7435                         opts->llvm_only = TRUE;
7436                 } else if (str_begins_with (arg, "data-outfile=")) {
7437                         opts->data_outfile = g_strdup (arg + strlen ("data-outfile="));
7438                 } else if (str_begins_with (arg, "profile=")) {
7439                         opts->profile_files = g_list_append (opts->profile_files, g_strdup (arg + strlen ("profile=")));
7440                 } else if (!strcmp (arg, "profile-only")) {
7441                         opts->profile_only = TRUE;
7442                 } else if (!strcmp (arg, "verbose")) {
7443                         opts->verbose = TRUE;
7444                 } else if (str_begins_with (arg, "help") || str_begins_with (arg, "?")) {
7445                         printf ("Supported options for --aot:\n");
7446                         printf ("    asmonly\n");
7447                         printf ("    bind-to-runtime-version\n");
7448                         printf ("    bitcode\n");
7449                         printf ("    data-outfile=\n");
7450                         printf ("    direct-icalls\n");
7451                         printf ("    direct-pinvoke\n");
7452                         printf ("    dwarfdebug\n");
7453                         printf ("    full\n");
7454                         printf ("    hybrid\n");
7455                         printf ("    info\n");
7456                         printf ("    keep-temps\n");
7457                         printf ("    llvm\n");
7458                         printf ("    llvmonly\n");
7459                         printf ("    llvm-outfile=\n");
7460                         printf ("    llvm-path=\n");
7461                         printf ("    msym-dir=\n");
7462                         printf ("    mtriple\n");
7463                         printf ("    nimt-trampolines=\n");
7464                         printf ("    nodebug\n");
7465                         printf ("    no-direct-calls\n");
7466                         printf ("    no-write-symbols\n");
7467                         printf ("    nrgctx-trampolines=\n");
7468                         printf ("    nrgctx-fetch-trampolines=\n");
7469                         printf ("    ngsharedvt-trampolines=\n");
7470                         printf ("    ntrampolines=\n");
7471                         printf ("    outfile=\n");
7472                         printf ("    profile=\n");
7473                         printf ("    profile-only\n");
7474                         printf ("    print-skipped-methods\n");
7475                         printf ("    readonly-value=\n");
7476                         printf ("    save-temps\n");
7477                         printf ("    soft-debug\n");
7478                         printf ("    static\n");
7479                         printf ("    stats\n");
7480                         printf ("    temp-path=\n");
7481                         printf ("    tool-prefix=\n");
7482                         printf ("    threads=\n");
7483                         printf ("    write-symbols\n");
7484                         printf ("    verbose\n");
7485                         printf ("    help/?\n");
7486                         exit (0);
7487                 } else {
7488                         fprintf (stderr, "AOT : Unknown argument '%s'.\n", arg);
7489                         exit (1);
7490                 }
7491
7492                 g_free ((gpointer) arg);
7493         }
7494
7495         if (opts->use_trampolines_page) {
7496                 opts->ntrampolines = 0;
7497                 opts->nrgctx_trampolines = 0;
7498                 opts->nimt_trampolines = 0;
7499                 opts->ngsharedvt_arg_trampolines = 0;
7500         }
7501
7502         g_ptr_array_free (args, /*free_seg=*/TRUE);
7503 }
7504
7505 static void
7506 add_token_info_hash (gpointer key, gpointer value, gpointer user_data)
7507 {
7508         MonoMethod *method = (MonoMethod*)key;
7509         MonoJumpInfoToken *ji = (MonoJumpInfoToken*)value;
7510         MonoAotCompile *acfg = (MonoAotCompile *)user_data;
7511         MonoJumpInfoToken *new_ji;
7512
7513         new_ji = (MonoJumpInfoToken *)mono_mempool_alloc0 (acfg->mempool, sizeof (MonoJumpInfoToken));
7514         new_ji->image = ji->image;
7515         new_ji->token = ji->token;
7516         g_hash_table_insert (acfg->token_info_hash, method, new_ji);
7517 }
7518
7519 static gboolean
7520 can_encode_class (MonoAotCompile *acfg, MonoClass *klass)
7521 {
7522         if (klass->type_token)
7523                 return TRUE;
7524         if ((klass->byval_arg.type == MONO_TYPE_VAR) || (klass->byval_arg.type == MONO_TYPE_MVAR) || (klass->byval_arg.type == MONO_TYPE_PTR))
7525                 return TRUE;
7526         if (klass->rank)
7527                 return can_encode_class (acfg, klass->element_class);
7528         return FALSE;
7529 }
7530
7531 static gboolean
7532 can_encode_method (MonoAotCompile *acfg, MonoMethod *method)
7533 {
7534                 if (method->wrapper_type) {
7535                         switch (method->wrapper_type) {
7536                         case MONO_WRAPPER_NONE:
7537                         case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK:
7538                         case MONO_WRAPPER_XDOMAIN_INVOKE:
7539                         case MONO_WRAPPER_STFLD:
7540                         case MONO_WRAPPER_LDFLD:
7541                         case MONO_WRAPPER_LDFLDA:
7542                         case MONO_WRAPPER_STELEMREF:
7543                         case MONO_WRAPPER_PROXY_ISINST:
7544                         case MONO_WRAPPER_ALLOC:
7545                         case MONO_WRAPPER_REMOTING_INVOKE:
7546                         case MONO_WRAPPER_UNKNOWN:
7547                         case MONO_WRAPPER_WRITE_BARRIER:
7548                         case MONO_WRAPPER_DELEGATE_INVOKE:
7549                         case MONO_WRAPPER_DELEGATE_BEGIN_INVOKE:
7550                         case MONO_WRAPPER_DELEGATE_END_INVOKE:
7551                         case MONO_WRAPPER_SYNCHRONIZED:
7552                                 break;
7553                         case MONO_WRAPPER_MANAGED_TO_MANAGED:
7554                         case MONO_WRAPPER_CASTCLASS: {
7555                                 WrapperInfo *info = mono_marshal_get_wrapper_info (method);
7556
7557                                 if (info)
7558                                         return TRUE;
7559                                 else
7560                                         return FALSE;
7561                                 break;
7562                         }
7563                         default:
7564                                 //printf ("Skip (wrapper call): %d -> %s\n", patch_info->type, mono_method_full_name (patch_info->data.method, TRUE));
7565                                 return FALSE;
7566                         }
7567                 } else {
7568                         if (!method->token) {
7569                                 /* The method is part of a constructed type like Int[,].Set (). */
7570                                 if (!g_hash_table_lookup (acfg->token_info_hash, method)) {
7571                                         if (method->klass->rank)
7572                                                 return TRUE;
7573                                         return FALSE;
7574                                 }
7575                         }
7576                 }
7577                 return TRUE;
7578 }
7579
7580 static gboolean
7581 can_encode_patch (MonoAotCompile *acfg, MonoJumpInfo *patch_info)
7582 {
7583         switch (patch_info->type) {
7584         case MONO_PATCH_INFO_METHOD:
7585         case MONO_PATCH_INFO_METHODCONST:
7586         case MONO_PATCH_INFO_METHOD_CODE_SLOT: {
7587                 MonoMethod *method = patch_info->data.method;
7588
7589                 return can_encode_method (acfg, method);
7590         }
7591         case MONO_PATCH_INFO_VTABLE:
7592         case MONO_PATCH_INFO_CLASS:
7593         case MONO_PATCH_INFO_IID:
7594         case MONO_PATCH_INFO_ADJUSTED_IID:
7595                 if (!can_encode_class (acfg, patch_info->data.klass)) {
7596                         //printf ("Skip: %s\n", mono_type_full_name (&patch_info->data.klass->byval_arg));
7597                         return FALSE;
7598                 }
7599                 break;
7600         case MONO_PATCH_INFO_DELEGATE_TRAMPOLINE: {
7601                 if (!can_encode_class (acfg, patch_info->data.del_tramp->klass)) {
7602                         //printf ("Skip: %s\n", mono_type_full_name (&patch_info->data.klass->byval_arg));
7603                         return FALSE;
7604                 }
7605                 break;
7606         }
7607         case MONO_PATCH_INFO_RGCTX_FETCH:
7608         case MONO_PATCH_INFO_RGCTX_SLOT_INDEX: {
7609                 MonoJumpInfoRgctxEntry *entry = patch_info->data.rgctx_entry;
7610
7611                 if (!can_encode_method (acfg, entry->method))
7612                         return FALSE;
7613                 if (!can_encode_patch (acfg, entry->data))
7614                         return FALSE;
7615                 break;
7616         }
7617         default:
7618                 break;
7619         }
7620
7621         return TRUE;
7622 }
7623
7624 static gboolean
7625 is_concrete_type (MonoType *t)
7626 {
7627         MonoClass *klass;
7628         int i;
7629
7630         if (t->type == MONO_TYPE_VAR || t->type == MONO_TYPE_MVAR)
7631                 return FALSE;
7632         if (t->type == MONO_TYPE_GENERICINST) {
7633                 MonoGenericContext *orig_ctx;
7634                 MonoGenericInst *inst;
7635                 MonoType *arg;
7636
7637                 if (!MONO_TYPE_ISSTRUCT (t))
7638                         return TRUE;
7639                 klass = mono_class_from_mono_type (t);
7640                 orig_ctx = &mono_class_get_generic_class (klass)->context;
7641
7642                 inst = orig_ctx->class_inst;
7643                 if (inst) {
7644                         for (i = 0; i < inst->type_argc; ++i) {
7645                                 arg = mini_get_underlying_type (inst->type_argv [i]);
7646                                 if (!is_concrete_type (arg))
7647                                         return FALSE;
7648                         }
7649                 }
7650                 inst = orig_ctx->method_inst;
7651                 if (inst) {
7652                         for (i = 0; i < inst->type_argc; ++i) {
7653                                 arg = mini_get_underlying_type (inst->type_argv [i]);
7654                                 if (!is_concrete_type (arg))
7655                                         return FALSE;
7656                         }
7657                 }
7658         }
7659         return TRUE;
7660 }
7661
7662 /* LOCKING: Assumes the loader lock is held */
7663 static void
7664 add_gsharedvt_wrappers (MonoAotCompile *acfg, MonoMethodSignature *sig, gboolean gsharedvt_in, gboolean gsharedvt_out)
7665 {
7666         MonoMethod *wrapper;
7667         gboolean concrete = TRUE;
7668         gboolean add_in = gsharedvt_in;
7669         gboolean add_out = gsharedvt_out;
7670
7671         if (gsharedvt_in && g_hash_table_lookup (acfg->gsharedvt_in_signatures, sig))
7672                 add_in = FALSE;
7673         if (gsharedvt_out && g_hash_table_lookup (acfg->gsharedvt_out_signatures, sig))
7674                 add_out = FALSE;
7675
7676         if (!add_in && !add_out)
7677                 return;
7678
7679         if (mini_is_gsharedvt_variable_signature (sig))
7680                 return;
7681
7682         if (add_in)
7683                 g_hash_table_insert (acfg->gsharedvt_in_signatures, sig, sig);
7684         if (add_out)
7685                 g_hash_table_insert (acfg->gsharedvt_out_signatures, sig, sig);
7686
7687         if (!sig->has_type_parameters) {
7688                 //printf ("%s\n", mono_signature_full_name (sig));
7689
7690                 if (gsharedvt_in) {
7691                         wrapper = mini_get_gsharedvt_in_sig_wrapper (sig);
7692                         add_extra_method (acfg, wrapper);
7693                 }
7694                 if (gsharedvt_out) {
7695                         wrapper = mini_get_gsharedvt_out_sig_wrapper (sig);
7696                         add_extra_method (acfg, wrapper);
7697                 }
7698         } else {
7699                 /* For signatures creared during generic sharing, convert them to a concrete signature if possible */
7700                 MonoMethodSignature *copy = mono_metadata_signature_dup (sig);
7701                 int i;
7702
7703                 //printf ("%s\n", mono_signature_full_name (sig));
7704
7705                 copy->ret = mini_get_underlying_type (sig->ret);
7706                 if (!is_concrete_type (copy->ret))
7707                         concrete = FALSE;
7708                 for (i = 0; i < sig->param_count; ++i) {
7709                         copy->params [i] = mini_get_underlying_type (sig->params [i]);
7710                         if (!is_concrete_type (copy->params [i]))
7711                                 concrete = FALSE;
7712                 }
7713                 if (concrete) {
7714                         copy->has_type_parameters = 0;
7715
7716                         if (gsharedvt_in) {
7717                                 wrapper = mini_get_gsharedvt_in_sig_wrapper (copy);
7718                                 add_extra_method (acfg, wrapper);
7719                         }
7720
7721                         if (gsharedvt_out) {
7722                                 wrapper = mini_get_gsharedvt_out_sig_wrapper (copy);
7723                                 add_extra_method (acfg, wrapper);
7724                         }
7725
7726                         //printf ("%s\n", mono_method_full_name (wrapper, 1));
7727                 }
7728         }
7729 }
7730
7731 /*
7732  * compile_method:
7733  *
7734  *   AOT compile a given method.
7735  * This function might be called by multiple threads, so it must be thread-safe.
7736  */
7737 static void
7738 compile_method (MonoAotCompile *acfg, MonoMethod *method)
7739 {
7740         MonoCompile *cfg;
7741         MonoJumpInfo *patch_info;
7742         gboolean skip;
7743         int index, depth;
7744         MonoMethod *wrapped;
7745         GTimer *jit_timer;
7746         JitFlags flags;
7747
7748         if (acfg->aot_opts.metadata_only)
7749                 return;
7750
7751         mono_acfg_lock (acfg);
7752         index = get_method_index (acfg, method);
7753         mono_acfg_unlock (acfg);
7754
7755         /* fixme: maybe we can also precompile wrapper methods */
7756         if ((method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
7757                 (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
7758                 (method->flags & METHOD_ATTRIBUTE_ABSTRACT)) {
7759                 //printf ("Skip (impossible): %s\n", mono_method_full_name (method, TRUE));
7760                 return;
7761         }
7762
7763         if (method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL)
7764                 return;
7765
7766         wrapped = mono_marshal_method_from_wrapper (method);
7767         if (wrapped && (wrapped->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && wrapped->is_generic)
7768                 // FIXME: The wrapper should be generic too, but it is not
7769                 return;
7770
7771         if (method->wrapper_type == MONO_WRAPPER_COMINTEROP)
7772                 return;
7773
7774         if (acfg->aot_opts.profile_only && !method->is_inflated && !g_hash_table_lookup (acfg->profile_methods, method))
7775                 return;
7776
7777         mono_atomic_inc_i32 (&acfg->stats.mcount);
7778
7779 #if 0
7780         if (method->is_generic || mono_class_is_gtd (method->klass)) {
7781                 mono_atomic_inc_i32 (&acfg->stats.genericcount);
7782                 return;
7783         }
7784 #endif
7785
7786         //acfg->aot_opts.print_skipped_methods = TRUE;
7787
7788         /*
7789          * Since these methods are the only ones which are compiled with
7790          * AOT support, and they are not used by runtime startup/shutdown code,
7791          * the runtime will not see AOT methods during AOT compilation,so it
7792          * does not need to support them by creating a fake GOT etc.
7793          */
7794         flags = JIT_FLAG_AOT;
7795         if (mono_aot_mode_is_full (&acfg->aot_opts))
7796                 flags = (JitFlags)(flags | JIT_FLAG_FULL_AOT);
7797         if (acfg->llvm)
7798                 flags = (JitFlags)(flags | JIT_FLAG_LLVM);
7799         if (acfg->aot_opts.llvm_only)
7800                 flags = (JitFlags)(flags | JIT_FLAG_LLVM_ONLY | JIT_FLAG_EXPLICIT_NULL_CHECKS);
7801         if (acfg->aot_opts.no_direct_calls)
7802                 flags = (JitFlags)(flags | JIT_FLAG_NO_DIRECT_ICALLS);
7803         if (acfg->aot_opts.direct_pinvoke)
7804                 flags = (JitFlags)(flags | JIT_FLAG_DIRECT_PINVOKE);
7805
7806         jit_timer = mono_time_track_start ();
7807         cfg = mini_method_compile (method, acfg->opts, mono_get_root_domain (), flags, 0, index);
7808         mono_time_track_end (&mono_jit_stats.jit_time, jit_timer);
7809
7810         if (cfg->exception_type == MONO_EXCEPTION_GENERIC_SHARING_FAILED) {
7811                 if (acfg->aot_opts.print_skipped_methods)
7812                         printf ("Skip (gshared failure): %s (%s)\n", mono_method_get_full_name (method), cfg->exception_message);
7813                 mono_atomic_inc_i32 (&acfg->stats.genericcount);
7814                 return;
7815         }
7816         if (cfg->exception_type != MONO_EXCEPTION_NONE) {
7817                 /* Some instances cannot be JITted due to constraints etc. */
7818                 if (!method->is_inflated)
7819                         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));
7820                 /* Let the exception happen at runtime */
7821                 return;
7822         }
7823
7824         if (cfg->disable_aot) {
7825                 if (acfg->aot_opts.print_skipped_methods)
7826                         printf ("Skip (disabled): %s\n", mono_method_get_full_name (method));
7827                 mono_atomic_inc_i32 (&acfg->stats.ocount);
7828                 return;
7829         }
7830         cfg->method_index = index;
7831
7832         /* Nullify patches which need no aot processing */
7833         for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
7834                 switch (patch_info->type) {
7835                 case MONO_PATCH_INFO_LABEL:
7836                 case MONO_PATCH_INFO_BB:
7837                         patch_info->type = MONO_PATCH_INFO_NONE;
7838                         break;
7839                 default:
7840                         break;
7841                 }
7842         }
7843
7844         /* Collect method->token associations from the cfg */
7845         mono_acfg_lock (acfg);
7846         g_hash_table_foreach (cfg->token_info_hash, add_token_info_hash, acfg);
7847         mono_acfg_unlock (acfg);
7848         g_hash_table_destroy (cfg->token_info_hash);
7849         cfg->token_info_hash = NULL;
7850
7851         /*
7852          * Check for absolute addresses.
7853          */
7854         skip = FALSE;
7855         for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
7856                 switch (patch_info->type) {
7857                 case MONO_PATCH_INFO_ABS:
7858                         /* unable to handle this */
7859                         skip = TRUE;
7860                         break;
7861                 default:
7862                         break;
7863                 }
7864         }
7865
7866         if (skip) {
7867                 if (acfg->aot_opts.print_skipped_methods)
7868                         printf ("Skip (abs call): %s\n", mono_method_get_full_name (method));
7869                 mono_atomic_inc_i32 (&acfg->stats.abscount);
7870                 return;
7871         }
7872
7873         /* Lock for the rest of the code */
7874         mono_acfg_lock (acfg);
7875
7876         if (cfg->gsharedvt)
7877                 acfg->stats.method_categories [METHOD_CAT_GSHAREDVT] ++;
7878         else if (cfg->gshared)
7879                 acfg->stats.method_categories [METHOD_CAT_INST] ++;
7880         else if (cfg->method->wrapper_type)
7881                 acfg->stats.method_categories [METHOD_CAT_WRAPPER] ++;
7882         else
7883                 acfg->stats.method_categories [METHOD_CAT_NORMAL] ++;
7884
7885         /*
7886          * Check for methods/klasses we can't encode.
7887          */
7888         skip = FALSE;
7889         for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
7890                 if (!can_encode_patch (acfg, patch_info))
7891                         skip = TRUE;
7892         }
7893
7894         if (skip) {
7895                 if (acfg->aot_opts.print_skipped_methods)
7896                         printf ("Skip (patches): %s\n", mono_method_get_full_name (method));
7897                 acfg->stats.ocount++;
7898                 mono_acfg_unlock (acfg);
7899                 return;
7900         }
7901
7902         if (!cfg->compile_llvm)
7903                 acfg->has_jitted_code = TRUE;
7904
7905         if (method->is_inflated && acfg->aot_opts.log_instances) {
7906                 if (acfg->instances_logfile)
7907                         fprintf (acfg->instances_logfile, "%s ### %d\n", mono_method_get_full_name (method), cfg->code_size);
7908                 else
7909                         printf ("%s ### %d\n", mono_method_get_full_name (method), cfg->code_size);
7910         }
7911
7912         /* Adds generic instances referenced by this method */
7913         /*
7914          * The depth is used to avoid infinite loops when generic virtual recursion is
7915          * encountered.
7916          */
7917         depth = GPOINTER_TO_UINT (g_hash_table_lookup (acfg->method_depth, method));
7918         if (!acfg->aot_opts.no_instances && depth < 32 && (mono_aot_mode_is_full (&acfg->aot_opts) || mono_aot_mode_is_hybrid (&acfg->aot_opts))) {
7919                 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
7920                         switch (patch_info->type) {
7921                         case MONO_PATCH_INFO_RGCTX_FETCH:
7922                         case MONO_PATCH_INFO_RGCTX_SLOT_INDEX:
7923                         case MONO_PATCH_INFO_METHOD:
7924                         case MONO_PATCH_INFO_METHOD_RGCTX: {
7925                                 MonoMethod *m = NULL;
7926
7927                                 if (patch_info->type == MONO_PATCH_INFO_RGCTX_FETCH || patch_info->type == MONO_PATCH_INFO_RGCTX_SLOT_INDEX) {
7928                                         MonoJumpInfoRgctxEntry *e = patch_info->data.rgctx_entry;
7929
7930                                         if (e->info_type == MONO_RGCTX_INFO_GENERIC_METHOD_CODE)
7931                                                 m = e->data->data.method;
7932                                 } else {
7933                                         m = patch_info->data.method;
7934                                 }
7935
7936                                 if (!m)
7937                                         break;
7938                                 if (m->is_inflated && (mono_aot_mode_is_full (&acfg->aot_opts) || mono_aot_mode_is_hybrid (&acfg->aot_opts))) {
7939                                         if (!(mono_class_generic_sharing_enabled (m->klass) &&
7940                                                   mono_method_is_generic_sharable_full (m, FALSE, FALSE, FALSE)) &&
7941                                                 (!method_has_type_vars (m) || mono_method_is_generic_sharable_full (m, TRUE, TRUE, FALSE))) {
7942                                                 if (m->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) {
7943                                                         if (mono_aot_mode_is_full (&acfg->aot_opts) && !method_has_type_vars (m))
7944                                                                 add_extra_method_with_depth (acfg, mono_marshal_get_native_wrapper (m, TRUE, TRUE), depth + 1);
7945                                                 } else {
7946                                                         add_extra_method_with_depth (acfg, m, depth + 1);
7947                                                         add_types_from_method_header (acfg, m);
7948                                                 }
7949                                         }
7950                                         add_generic_class_with_depth (acfg, m->klass, depth + 5, "method");
7951                                 }
7952                                 if (m->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED) {
7953                                         WrapperInfo *info = mono_marshal_get_wrapper_info (m);
7954
7955                                         if (info && info->subtype == WRAPPER_SUBTYPE_ELEMENT_ADDR)
7956                                                 add_extra_method_with_depth (acfg, m, depth + 1);
7957                                 }
7958                                 break;
7959                         }
7960                         case MONO_PATCH_INFO_VTABLE: {
7961                                 MonoClass *klass = patch_info->data.klass;
7962
7963                                 if (mono_class_is_ginst (klass) && !mini_class_is_generic_sharable (klass))
7964                                         add_generic_class_with_depth (acfg, klass, depth + 5, "vtable");
7965                                 break;
7966                         }
7967                         case MONO_PATCH_INFO_SFLDA: {
7968                                 MonoClass *klass = patch_info->data.field->parent;
7969
7970                                 /* The .cctor needs to run at runtime. */
7971                                 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))
7972                                         add_extra_method_with_depth (acfg, mono_class_get_cctor (klass), depth + 1);
7973                                 break;
7974                         }
7975                         default:
7976                                 break;
7977                         }
7978                 }
7979         }
7980
7981         /* Determine whenever the method has GOT slots */
7982         for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
7983                 switch (patch_info->type) {
7984                 case MONO_PATCH_INFO_GOT_OFFSET:
7985                 case MONO_PATCH_INFO_NONE:
7986                 case MONO_PATCH_INFO_GC_CARD_TABLE_ADDR:
7987                 case MONO_PATCH_INFO_GC_NURSERY_START:
7988                 case MONO_PATCH_INFO_GC_NURSERY_BITS:
7989                         break;
7990                 case MONO_PATCH_INFO_IMAGE:
7991                         /* The assembly is stored in GOT slot 0 */
7992                         if (patch_info->data.image != acfg->image)
7993                                 cfg->has_got_slots = TRUE;
7994                         break;
7995                 default:
7996                         if (!is_plt_patch (patch_info) || (cfg->compile_llvm && acfg->aot_opts.llvm_only))
7997                                 cfg->has_got_slots = TRUE;
7998                         break;
7999                 }
8000         }
8001
8002         if (!cfg->has_got_slots)
8003                 mono_atomic_inc_i32 (&acfg->stats.methods_without_got_slots);
8004
8005         /* Add gsharedvt wrappers for signatures used by the method */
8006         if (acfg->aot_opts.llvm_only) {
8007                 GSList *l;
8008
8009                 if (!cfg->method->wrapper_type || cfg->method->wrapper_type == MONO_WRAPPER_DELEGATE_INVOKE)
8010                         /* These only need out wrappers */
8011                         add_gsharedvt_wrappers (acfg, mono_method_signature (cfg->method), FALSE, TRUE);
8012
8013                 for (l = cfg->signatures; l; l = l->next) {
8014                         MonoMethodSignature *sig = mono_metadata_signature_dup ((MonoMethodSignature*)l->data);
8015
8016                         /* These only need in wrappers */
8017                         add_gsharedvt_wrappers (acfg, sig, TRUE, FALSE);
8018                 }
8019         }
8020
8021         /*
8022          * FIXME: Instead of this mess, allocate the patches from the aot mempool.
8023          */
8024         /* Make a copy of the patch info which is in the mempool */
8025         {
8026                 MonoJumpInfo *patches = NULL, *patches_end = NULL;
8027
8028                 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
8029                         MonoJumpInfo *new_patch_info = mono_patch_info_dup_mp (acfg->mempool, patch_info);
8030
8031                         if (!patches)
8032                                 patches = new_patch_info;
8033                         else
8034                                 patches_end->next = new_patch_info;
8035                         patches_end = new_patch_info;
8036                 }
8037                 cfg->patch_info = patches;
8038         }
8039         /* Make a copy of the unwind info */
8040         {
8041                 GSList *l, *unwind_ops;
8042                 MonoUnwindOp *op;
8043
8044                 unwind_ops = NULL;
8045                 for (l = cfg->unwind_ops; l; l = l->next) {
8046                         op = (MonoUnwindOp *)mono_mempool_alloc (acfg->mempool, sizeof (MonoUnwindOp));
8047                         memcpy (op, l->data, sizeof (MonoUnwindOp));
8048                         unwind_ops = g_slist_prepend_mempool (acfg->mempool, unwind_ops, op);
8049                 }
8050                 cfg->unwind_ops = g_slist_reverse (unwind_ops);
8051         }
8052         /* Make a copy of the argument/local info */
8053         {
8054                 ERROR_DECL (error);
8055                 MonoInst **args, **locals;
8056                 MonoMethodSignature *sig;
8057                 MonoMethodHeader *header;
8058                 int i;
8059
8060                 sig = mono_method_signature (method);
8061                 args = (MonoInst **)mono_mempool_alloc (acfg->mempool, sizeof (MonoInst*) * (sig->param_count + sig->hasthis));
8062                 for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
8063                         args [i] = (MonoInst *)mono_mempool_alloc (acfg->mempool, sizeof (MonoInst));
8064                         memcpy (args [i], cfg->args [i], sizeof (MonoInst));
8065                 }
8066                 cfg->args = args;
8067
8068                 header = mono_method_get_header_checked (method, error);
8069                 mono_error_assert_ok (error); /* FIXME don't swallow the error */
8070                 locals = (MonoInst **)mono_mempool_alloc (acfg->mempool, sizeof (MonoInst*) * header->num_locals);
8071                 for (i = 0; i < header->num_locals; ++i) {
8072                         locals [i] = (MonoInst *)mono_mempool_alloc (acfg->mempool, sizeof (MonoInst));
8073                         memcpy (locals [i], cfg->locals [i], sizeof (MonoInst));
8074                 }
8075                 mono_metadata_free_mh (header);
8076                 cfg->locals = locals;
8077         }
8078
8079         /* Free some fields used by cfg to conserve memory */
8080         mono_empty_compile (cfg);
8081
8082         //printf ("Compile:           %s\n", mono_method_full_name (method, TRUE));
8083
8084         while (index >= acfg->cfgs_size) {
8085                 MonoCompile **new_cfgs;
8086                 int new_size;
8087
8088                 new_size = acfg->cfgs_size * 2;
8089                 new_cfgs = g_new0 (MonoCompile*, new_size);
8090                 memcpy (new_cfgs, acfg->cfgs, sizeof (MonoCompile*) * acfg->cfgs_size);
8091                 g_free (acfg->cfgs);
8092                 acfg->cfgs = new_cfgs;
8093                 acfg->cfgs_size = new_size;
8094         }
8095         acfg->cfgs [index] = cfg;
8096
8097         g_hash_table_insert (acfg->method_to_cfg, cfg->orig_method, cfg);
8098
8099         /* Update global stats while holding a lock. */
8100         mono_update_jit_stats (cfg);
8101
8102         /*
8103         if (cfg->orig_method->wrapper_type)
8104                 g_ptr_array_add (acfg->extra_methods, cfg->orig_method);
8105         */
8106
8107         mono_acfg_unlock (acfg);
8108
8109         mono_atomic_inc_i32 (&acfg->stats.ccount);
8110 }
8111
8112 static mono_thread_start_return_t WINAPI
8113 compile_thread_main (gpointer user_data)
8114 {
8115         MonoAotCompile *acfg = ((MonoAotCompile **)user_data) [0];
8116         GPtrArray *methods = ((GPtrArray **)user_data) [1];
8117         int i;
8118
8119         ERROR_DECL (error);
8120         MonoInternalThread *internal = mono_thread_internal_current ();
8121         MonoString *str = mono_string_new_checked (mono_domain_get (), "AOT compiler", error);
8122         mono_error_assert_ok (error);
8123         mono_thread_set_name_internal (internal, str, TRUE, FALSE, error);
8124         mono_error_assert_ok (error);
8125
8126         for (i = 0; i < methods->len; ++i)
8127                 compile_method (acfg, (MonoMethod *)g_ptr_array_index (methods, i));
8128
8129         return 0;
8130 }
8131
8132 /* Used by the LLVM backend */
8133 guint32
8134 mono_aot_get_got_offset (MonoJumpInfo *ji)
8135 {
8136         return get_got_offset (llvm_acfg, TRUE, ji);
8137 }
8138
8139 /*
8140  * mono_aot_is_shared_got_offset:
8141  *
8142  *   Return whenever OFFSET refers to a GOT slot which is preinitialized
8143  * when the AOT image is loaded.
8144  */
8145 gboolean
8146 mono_aot_is_shared_got_offset (int offset)
8147 {
8148         return offset < llvm_acfg->nshared_got_entries;
8149 }
8150
8151 char*
8152 mono_aot_get_method_name (MonoCompile *cfg)
8153 {
8154         if (llvm_acfg->aot_opts.static_link)
8155                 /* Include the assembly name too to avoid duplicate symbol errors */
8156                 return g_strdup_printf ("%s_%s", llvm_acfg->assembly_name_sym, get_debug_sym (cfg->orig_method, "", llvm_acfg->method_label_hash));
8157         else
8158                 return get_debug_sym (cfg->orig_method, "", llvm_acfg->method_label_hash);
8159 }
8160
8161 /*
8162  * mono_aot_is_linkonce_method:
8163  *
8164  *   Return whenever METHOD should be emitted with linkonce linkage,
8165  * eliminating duplicate copies when compiling in static mode.
8166  */
8167 gboolean
8168 mono_aot_is_linkonce_method (MonoMethod *method)
8169 {
8170         return FALSE;
8171 #if 0
8172         WrapperInfo *info;
8173
8174         // FIXME: Add more cases
8175         if (method->wrapper_type != MONO_WRAPPER_UNKNOWN)
8176                 return FALSE;
8177         info = mono_marshal_get_wrapper_info (method);
8178         if ((info && (info->subtype == WRAPPER_SUBTYPE_GSHAREDVT_IN_SIG || info->subtype == WRAPPER_SUBTYPE_GSHAREDVT_OUT_SIG)))
8179                 return TRUE;
8180         return FALSE;
8181 #endif
8182 }
8183
8184 static gboolean
8185 append_mangled_type (GString *s, MonoType *t)
8186 {
8187         if (t->byref)
8188                 g_string_append_printf (s, "b");
8189         switch (t->type) {
8190         case MONO_TYPE_VOID:
8191                 g_string_append_printf (s, "void_");
8192                 break;
8193         case MONO_TYPE_I1:
8194                 g_string_append_printf (s, "i1");
8195                 break;
8196         case MONO_TYPE_U1:
8197                 g_string_append_printf (s, "u1");
8198                 break;
8199         case MONO_TYPE_I2:
8200                 g_string_append_printf (s, "i2");
8201                 break;
8202         case MONO_TYPE_U2:
8203                 g_string_append_printf (s, "u2");
8204                 break;
8205         case MONO_TYPE_I4:
8206                 g_string_append_printf (s, "i4");
8207                 break;
8208         case MONO_TYPE_U4:
8209                 g_string_append_printf (s, "u4");
8210                 break;
8211         case MONO_TYPE_I8:
8212                 g_string_append_printf (s, "i8");
8213                 break;
8214         case MONO_TYPE_U8:
8215                 g_string_append_printf (s, "u8");
8216                 break;
8217         case MONO_TYPE_I:
8218                 g_string_append_printf (s, "ii");
8219                 break;
8220         case MONO_TYPE_U:
8221                 g_string_append_printf (s, "ui");
8222                 break;
8223         case MONO_TYPE_R4:
8224                 g_string_append_printf (s, "fl");
8225                 break;
8226         case MONO_TYPE_R8:
8227                 g_string_append_printf (s, "do");
8228                 break;
8229         default: {
8230                 char *fullname = mono_type_full_name (t);
8231                 GString *temp;
8232                 char *temps;
8233                 int i, len;
8234
8235                 /*
8236                  * Have to create a mangled name which is:
8237                  * - a valid symbol
8238                  * - unique
8239                  */
8240                 temp = g_string_new ("");
8241                 len = strlen (fullname);
8242                 for (i = 0; i < len; ++i) {
8243                         char c = fullname [i];
8244                         if (isalnum (c)) {
8245                                 g_string_append_c (temp, c);
8246                         } else if (c == '_') {
8247                                 g_string_append_c (temp, '_');
8248                                 g_string_append_c (temp, '_');
8249                         } else {
8250                                 g_string_append_c (temp, '_');
8251                                 g_string_append_printf (temp, "%x", (int)c);
8252                         }
8253                 }
8254                 temps = g_string_free (temp, FALSE);
8255                 /* Include the length to avoid different length type names aliasing each other */
8256                 g_string_append_printf (s, "cl%x_%s_", strlen (temps), temps);
8257                 g_free (temps);
8258         }
8259         }
8260         if (t->attrs)
8261                 g_string_append_printf (s, "_attrs_%d", t->attrs);
8262         return TRUE;
8263 }
8264
8265 static gboolean
8266 append_mangled_signature (GString *s, MonoMethodSignature *sig)
8267 {
8268         int i;
8269         gboolean supported;
8270
8271         supported = append_mangled_type (s, sig->ret);
8272         if (!supported)
8273                 return FALSE;
8274         if (sig->hasthis)
8275                 g_string_append_printf (s, "this_");
8276         if (sig->pinvoke)
8277                 g_string_append_printf (s, "pinvoke_");
8278         for (i = 0; i < sig->param_count; ++i) {
8279                 supported = append_mangled_type (s, sig->params [i]);
8280                 if (!supported)
8281                         return FALSE;
8282         }
8283
8284         return TRUE;
8285 }
8286
8287 static void
8288 append_mangled_wrapper_type (GString *s, guint32 wrapper_type)
8289 {
8290         const char *label;
8291
8292         switch (wrapper_type) {
8293         case MONO_WRAPPER_REMOTING_INVOKE:
8294                 label = "remoting_invoke";
8295                 break;
8296         case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK:
8297                 label = "remoting_invoke_check";
8298                 break;
8299         case MONO_WRAPPER_XDOMAIN_INVOKE:
8300                 label = "remoting_invoke_xdomain";
8301                 break;
8302         case MONO_WRAPPER_PROXY_ISINST:
8303                 label = "proxy_isinst";
8304                 break;
8305         case MONO_WRAPPER_LDFLD:
8306                 label = "ldfld";
8307                 break;
8308         case MONO_WRAPPER_LDFLDA:
8309                 label = "ldflda";
8310                 break;
8311         case MONO_WRAPPER_STFLD:
8312                 label = "stfld";
8313                 break;
8314         case MONO_WRAPPER_ALLOC:
8315                 label = "alloc";
8316                 break;
8317         case MONO_WRAPPER_WRITE_BARRIER:
8318                 label = "write_barrier";
8319                 break;
8320         case MONO_WRAPPER_STELEMREF:
8321                 label = "stelemref";
8322                 break;
8323         case MONO_WRAPPER_UNKNOWN:
8324                 label = "unknown";
8325                 break;
8326         case MONO_WRAPPER_MANAGED_TO_NATIVE:
8327                 label = "man2native";
8328                 break;
8329         case MONO_WRAPPER_SYNCHRONIZED:
8330                 label = "synch";
8331                 break;
8332         case MONO_WRAPPER_MANAGED_TO_MANAGED:
8333                 label = "man2man";
8334                 break;
8335         case MONO_WRAPPER_CASTCLASS:
8336                 label = "castclass";
8337                 break;
8338         case MONO_WRAPPER_RUNTIME_INVOKE:
8339                 label = "run_invoke";
8340                 break;
8341         case MONO_WRAPPER_DELEGATE_INVOKE:
8342                 label = "del_inv";
8343                 break;
8344         case MONO_WRAPPER_DELEGATE_BEGIN_INVOKE:
8345                 label = "del_beg_inv";
8346                 break;
8347         case MONO_WRAPPER_DELEGATE_END_INVOKE:
8348                 label = "del_end_inv";
8349                 break;
8350         case MONO_WRAPPER_NATIVE_TO_MANAGED:
8351                 label = "native2man";
8352                 break;
8353         default:
8354                 g_assert_not_reached ();
8355         }
8356
8357         g_string_append_printf (s, "%s_", label);
8358 }
8359
8360 static void
8361 append_mangled_wrapper_subtype (GString *s, WrapperSubtype subtype)
8362 {
8363         const char *label;
8364
8365         switch (subtype)
8366         {
8367         case WRAPPER_SUBTYPE_NONE:
8368                 return;
8369         case WRAPPER_SUBTYPE_ELEMENT_ADDR:
8370                 label = "elem_addr";
8371                 break;
8372         case WRAPPER_SUBTYPE_STRING_CTOR:
8373                 label = "str_ctor";
8374                 break;
8375         case WRAPPER_SUBTYPE_VIRTUAL_STELEMREF:
8376                 label = "virt_stelem";
8377                 break;
8378         case WRAPPER_SUBTYPE_FAST_MONITOR_ENTER:
8379                 label = "fast_mon_enter";
8380                 break;
8381         case WRAPPER_SUBTYPE_FAST_MONITOR_ENTER_V4:
8382                 label = "fast_mon_enter_4";
8383                 break;
8384         case WRAPPER_SUBTYPE_FAST_MONITOR_EXIT:
8385                 label = "fast_monitor_exit";
8386                 break;
8387         case WRAPPER_SUBTYPE_PTR_TO_STRUCTURE:
8388                 label = "ptr2struct";
8389                 break;
8390         case WRAPPER_SUBTYPE_STRUCTURE_TO_PTR:
8391                 label = "struct2ptr";
8392                 break;
8393         case WRAPPER_SUBTYPE_CASTCLASS_WITH_CACHE:
8394                 label = "castclass_w_cache";
8395                 break;
8396         case WRAPPER_SUBTYPE_ISINST_WITH_CACHE:
8397                 label = "isinst_w_cache";
8398                 break;
8399         case WRAPPER_SUBTYPE_RUNTIME_INVOKE_NORMAL:
8400                 label = "run_inv_norm";
8401                 break;
8402         case WRAPPER_SUBTYPE_RUNTIME_INVOKE_DYNAMIC:
8403                 label = "run_inv_dyn";
8404                 break;
8405         case WRAPPER_SUBTYPE_RUNTIME_INVOKE_DIRECT:
8406                 label = "run_inv_dir";
8407                 break;
8408         case WRAPPER_SUBTYPE_RUNTIME_INVOKE_VIRTUAL:
8409                 label = "run_inv_vir";
8410                 break;
8411         case WRAPPER_SUBTYPE_ICALL_WRAPPER:
8412                 label = "icall";
8413                 break;
8414         case WRAPPER_SUBTYPE_NATIVE_FUNC_AOT:
8415                 label = "native_func_aot";
8416                 break;
8417         case WRAPPER_SUBTYPE_PINVOKE:
8418                 label = "pinvoke";
8419                 break;
8420         case WRAPPER_SUBTYPE_SYNCHRONIZED_INNER:
8421                 label = "synch_inner";
8422                 break;
8423         case WRAPPER_SUBTYPE_GSHAREDVT_IN:
8424                 label = "gshared_in";
8425                 break;
8426         case WRAPPER_SUBTYPE_GSHAREDVT_OUT:
8427                 label = "gshared_out";
8428                 break;
8429         case WRAPPER_SUBTYPE_ARRAY_ACCESSOR:
8430                 label = "array_acc";
8431                 break;
8432         case WRAPPER_SUBTYPE_GENERIC_ARRAY_HELPER:
8433                 label = "generic_arry_help";
8434                 break;
8435         case WRAPPER_SUBTYPE_DELEGATE_INVOKE_VIRTUAL:
8436                 label = "del_inv_virt";
8437                 break;
8438         case WRAPPER_SUBTYPE_DELEGATE_INVOKE_BOUND:
8439                 label = "del_inv_bound";
8440                 break;
8441         case WRAPPER_SUBTYPE_INTERP_IN:
8442                 label = "interp_in";
8443                 break;
8444         case WRAPPER_SUBTYPE_GSHAREDVT_IN_SIG:
8445                 label = "gsharedvt_in_sig";
8446                 break;
8447         case WRAPPER_SUBTYPE_GSHAREDVT_OUT_SIG:
8448                 label = "gsharedvt_out_sig";
8449                 break;
8450         default:
8451                 g_assert_not_reached ();
8452         }
8453
8454         g_string_append_printf (s, "%s_", label);
8455 }
8456
8457 static char *
8458 sanitize_mangled_string (const char *input)
8459 {
8460         GString *s = g_string_new ("");
8461
8462         for (int i=0; input [i] != '\0'; i++) {
8463                 char c = input [i];
8464                 switch (c) {
8465                 case '.':
8466                         g_string_append (s, "_dot_");
8467                         break;
8468                 case ' ':
8469                         g_string_append (s, "_");
8470                         break;
8471                 case '`':
8472                         g_string_append (s, "_bt_");
8473                         break;
8474                 case '<':
8475                         g_string_append (s, "_le_");
8476                         break;
8477                 case '>':
8478                         g_string_append (s, "_gt_");
8479                         break;
8480                 case '/':
8481                         g_string_append (s, "_sl_");
8482                         break;
8483                 case '[':
8484                         g_string_append (s, "_lbrack_");
8485                         break;
8486                 case ']':
8487                         g_string_append (s, "_rbrack_");
8488                         break;
8489                 case '(':
8490                         g_string_append (s, "_lparen_");
8491                         break;
8492                 case '-':
8493                         g_string_append (s, "_dash_");
8494                         break;
8495                 case ')':
8496                         g_string_append (s, "_rparen_");
8497                         break;
8498                 case ',':
8499                         g_string_append (s, "_comma_");
8500                         break;
8501                 case ':':
8502                         g_string_append (s, "_colon_");
8503                         break;
8504                 default:
8505                         g_string_append_c (s, c);
8506                 }
8507         }
8508
8509         return g_string_free (s, FALSE);
8510 }
8511
8512 static gboolean
8513 append_mangled_klass (GString *s, MonoClass *klass)
8514 {
8515         char *klass_desc = mono_class_full_name (klass);
8516         g_string_append_printf (s, "_%s_%s_", klass->name_space, klass_desc);
8517         g_free (klass_desc);
8518
8519         // Success
8520         return TRUE;
8521 }
8522
8523 static gboolean
8524 append_mangled_method (GString *s, MonoMethod *method);
8525
8526 static gboolean
8527 append_mangled_wrapper (GString *s, MonoMethod *method)
8528 {
8529         gboolean success = TRUE;
8530         WrapperInfo *info = mono_marshal_get_wrapper_info (method);
8531         g_string_append_printf (s, "wrapper_");
8532         g_string_append_printf (s, "%s_", method->klass->image->assembly->aname.name);
8533
8534         append_mangled_wrapper_type (s, method->wrapper_type);
8535
8536         switch (method->wrapper_type) {
8537         case MONO_WRAPPER_REMOTING_INVOKE:
8538         case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK:
8539         case MONO_WRAPPER_XDOMAIN_INVOKE: {
8540                 MonoMethod *m = mono_marshal_method_from_wrapper (method);
8541                 g_assert (m);
8542                 success = success && append_mangled_method (s, m);
8543                 break;
8544         }
8545         case MONO_WRAPPER_PROXY_ISINST:
8546         case MONO_WRAPPER_LDFLD:
8547         case MONO_WRAPPER_LDFLDA:
8548         case MONO_WRAPPER_STFLD: {
8549                 g_assert (info);
8550                 success = success && append_mangled_klass (s, info->d.proxy.klass);
8551                 break;
8552         }
8553         case MONO_WRAPPER_ALLOC: {
8554                 /* The GC name is saved once in MonoAotFileInfo */
8555                 g_assert (info->d.alloc.alloc_type != -1);
8556                 g_string_append_printf (s, "%d_", info->d.alloc.alloc_type);
8557                 // SlowAlloc, etc
8558                 g_string_append_printf (s, "%s_", method->name);
8559                 break;
8560         }
8561         case MONO_WRAPPER_WRITE_BARRIER: {
8562                 g_string_append_printf (s, "%s_", method->name);
8563                 break;
8564         }
8565         case MONO_WRAPPER_STELEMREF: {
8566                 append_mangled_wrapper_subtype (s, info->subtype);
8567                 if (info->subtype == WRAPPER_SUBTYPE_VIRTUAL_STELEMREF)
8568                         g_string_append_printf (s, "%d", info->d.virtual_stelemref.kind);
8569                 break;
8570         }
8571         case MONO_WRAPPER_UNKNOWN: {
8572                 append_mangled_wrapper_subtype (s, info->subtype);
8573                 if (info->subtype == WRAPPER_SUBTYPE_PTR_TO_STRUCTURE ||
8574                         info->subtype == WRAPPER_SUBTYPE_STRUCTURE_TO_PTR)
8575                         success = success && append_mangled_klass (s, method->klass);
8576                 else if (info->subtype == WRAPPER_SUBTYPE_SYNCHRONIZED_INNER)
8577                         success = success && append_mangled_method (s, info->d.synchronized_inner.method);
8578                 else if (info->subtype == WRAPPER_SUBTYPE_ARRAY_ACCESSOR)
8579                         success = success && append_mangled_method (s, info->d.array_accessor.method);
8580                 else if (info->subtype == WRAPPER_SUBTYPE_INTERP_IN)
8581                         append_mangled_signature (s, info->d.interp_in.sig);
8582                 else if (info->subtype == WRAPPER_SUBTYPE_GSHAREDVT_IN_SIG)
8583                         append_mangled_signature (s, info->d.gsharedvt.sig);
8584                 else if (info->subtype == WRAPPER_SUBTYPE_GSHAREDVT_OUT_SIG)
8585                         append_mangled_signature (s, info->d.gsharedvt.sig);
8586                 break;
8587         }
8588         case MONO_WRAPPER_MANAGED_TO_NATIVE: {
8589                 append_mangled_wrapper_subtype (s, info->subtype);
8590                 if (info->subtype == WRAPPER_SUBTYPE_ICALL_WRAPPER) {
8591                         g_string_append_printf (s, "%s", method->name);
8592                 } else if (info->subtype == WRAPPER_SUBTYPE_NATIVE_FUNC_AOT) {
8593                         success = success && append_mangled_method (s, info->d.managed_to_native.method);
8594                 } else {
8595                         g_assert (info->subtype == WRAPPER_SUBTYPE_NONE || info->subtype == WRAPPER_SUBTYPE_PINVOKE);
8596                         success = success && append_mangled_method (s, info->d.managed_to_native.method);
8597                 }
8598                 break;
8599         }
8600         case MONO_WRAPPER_SYNCHRONIZED: {
8601                 MonoMethod *m;
8602
8603                 m = mono_marshal_method_from_wrapper (method);
8604                 g_assert (m);
8605                 g_assert (m != method);
8606                 success = success && append_mangled_method (s, m);
8607                 break;
8608         }
8609         case MONO_WRAPPER_MANAGED_TO_MANAGED: {
8610                 append_mangled_wrapper_subtype (s, info->subtype);
8611
8612                 if (info->subtype == WRAPPER_SUBTYPE_ELEMENT_ADDR) {
8613                         g_string_append_printf (s, "%d_", info->d.element_addr.rank);
8614                         g_string_append_printf (s, "%d_", info->d.element_addr.elem_size);
8615                 } else if (info->subtype == WRAPPER_SUBTYPE_STRING_CTOR) {
8616                         success = success && append_mangled_method (s, info->d.string_ctor.method);
8617                 } else if (info->subtype == WRAPPER_SUBTYPE_GENERIC_ARRAY_HELPER) {
8618                         success = success && append_mangled_method (s, info->d.generic_array_helper.method);
8619                 } else {
8620                         success = FALSE;
8621                 }
8622                 break;
8623         }
8624         case MONO_WRAPPER_CASTCLASS: {
8625                 append_mangled_wrapper_subtype (s, info->subtype);
8626                 break;
8627         }
8628         case MONO_WRAPPER_RUNTIME_INVOKE: {
8629                 append_mangled_wrapper_subtype (s, info->subtype);
8630                 if (info->subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_DIRECT || info->subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_VIRTUAL)
8631                         success = success && append_mangled_method (s, info->d.runtime_invoke.method);
8632                 else if (info->subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_NORMAL)
8633                         success = success && append_mangled_signature (s, info->d.runtime_invoke.sig);
8634                 break;
8635         }
8636         case MONO_WRAPPER_DELEGATE_INVOKE:
8637         case MONO_WRAPPER_DELEGATE_BEGIN_INVOKE:
8638         case MONO_WRAPPER_DELEGATE_END_INVOKE: {
8639                 if (method->is_inflated) {
8640                         /* These wrappers are identified by their class */
8641                         g_string_append_printf (s, "i_");
8642                         success = success && append_mangled_klass (s, method->klass);
8643                 } else {
8644                         WrapperInfo *info = mono_marshal_get_wrapper_info (method);
8645
8646                         g_string_append_printf (s, "u_");
8647                         if (method->wrapper_type == MONO_WRAPPER_DELEGATE_INVOKE)
8648                                 append_mangled_wrapper_subtype (s, info->subtype);
8649                         g_string_append_printf (s, "u_sigstart");
8650                 }
8651                 break;
8652         }
8653         case MONO_WRAPPER_NATIVE_TO_MANAGED: {
8654                 g_assert (info);
8655                 success = success && append_mangled_method (s, info->d.native_to_managed.method);
8656                 success = success && append_mangled_klass (s, method->klass);
8657                 break;
8658         }
8659         default:
8660                 g_assert_not_reached ();
8661         }
8662         return success && append_mangled_signature (s, mono_method_signature (method));
8663 }
8664
8665 static void
8666 append_mangled_ginst (GString *str, MonoGenericInst *ginst)
8667 {
8668         int i;
8669
8670         for (i = 0; i < ginst->type_argc; ++i) {
8671                 if (i > 0)
8672                         g_string_append (str, ", ");
8673                 MonoType *type = ginst->type_argv [i];
8674                 switch (type->type) {
8675                 case MONO_TYPE_VAR:
8676                 case MONO_TYPE_MVAR: {
8677                         MonoType *constraint = NULL;
8678                         if (type->data.generic_param)
8679                                 constraint = type->data.generic_param->gshared_constraint;
8680                         if (constraint) {
8681                                 g_assert (constraint->type != MONO_TYPE_VAR && constraint->type != MONO_TYPE_MVAR);
8682                                 g_string_append (str, "gshared:");
8683                                 mono_type_get_desc (str, constraint, TRUE);
8684                                 break;
8685                         }
8686                         // Else falls through to common case
8687                 }
8688                 default:
8689                         mono_type_get_desc (str, type, TRUE);
8690                 }
8691         }
8692 }
8693
8694 static void
8695 append_mangled_context (GString *str, MonoGenericContext *context)
8696 {
8697         GString *res = g_string_new ("");
8698
8699         g_string_append_printf (res, "gens_");
8700         g_string_append (res, "00");
8701
8702         gboolean good = context->class_inst && context->class_inst->type_argc > 0;
8703         good = good || (context->method_inst && context->method_inst->type_argc > 0);
8704         g_assert (good);
8705
8706         if (context->class_inst)
8707                 append_mangled_ginst (res, context->class_inst);
8708         if (context->method_inst) {
8709                 if (context->class_inst)
8710                         g_string_append (res, "11");
8711                 append_mangled_ginst (res, context->method_inst);
8712         }
8713         g_string_append_printf (str, "gens_%s", res->str);
8714         g_free (res);
8715 }
8716
8717 static gboolean
8718 append_mangled_method (GString *s, MonoMethod *method)
8719 {
8720         if (method->wrapper_type)
8721                 return append_mangled_wrapper (s, method);
8722
8723         if (method->is_inflated) {
8724                 g_string_append_printf (s, "inflated_");
8725                 MonoMethodInflated *imethod = (MonoMethodInflated*) method;
8726                 g_assert (imethod->context.class_inst != NULL || imethod->context.method_inst != NULL);
8727
8728                 append_mangled_context (s, &imethod->context);
8729                 g_string_append_printf (s, "_declared_by_");
8730                 append_mangled_method (s, imethod->declaring);
8731         } else if (method->is_generic) {
8732                 g_string_append_printf (s, "%s_", method->klass->image->assembly->aname.name);
8733
8734                 g_string_append_printf (s, "generic_");
8735                 append_mangled_klass (s, method->klass);
8736                 g_string_append_printf (s, "_%s_", method->name);
8737
8738                 MonoGenericContainer *container = mono_method_get_generic_container (method);
8739                 g_string_append_printf (s, "_%s");
8740                 append_mangled_context (s, &container->context);
8741
8742                 return append_mangled_signature (s, mono_method_signature (method));
8743         } else {
8744                 g_string_append_printf (s, "_");
8745                 append_mangled_klass (s, method->klass);
8746                 g_string_append_printf (s, "_%s_", method->name);
8747                 if (!append_mangled_signature (s, mono_method_signature (method))) {
8748                         g_string_free (s, TRUE);
8749                         return FALSE;
8750                 }
8751         }
8752
8753         return TRUE;
8754 }
8755
8756 /*
8757  * mono_aot_get_mangled_method_name:
8758  *
8759  *   Return a unique mangled name for METHOD, or NULL.
8760  */
8761 char*
8762 mono_aot_get_mangled_method_name (MonoMethod *method)
8763 {
8764         // FIXME: use static cache (mempool?)
8765         // We call this a *lot*
8766
8767         GString *s = g_string_new ("aot_");
8768         if (!append_mangled_method (s, method)) {
8769                 g_string_free (s, TRUE);
8770                 return NULL;
8771         } else {
8772                 char *out = g_string_free (s, FALSE);
8773                 // Scrub method and class names
8774                 char *cleaned = sanitize_mangled_string (out);
8775                 g_free (out);
8776                 return cleaned;
8777         }
8778 }
8779
8780 gboolean
8781 mono_aot_is_direct_callable (MonoJumpInfo *patch_info)
8782 {
8783         return is_direct_callable (llvm_acfg, NULL, patch_info);
8784 }
8785
8786 void
8787 mono_aot_mark_unused_llvm_plt_entry (MonoJumpInfo *patch_info)
8788 {
8789         MonoPltEntry *plt_entry;
8790
8791         plt_entry = get_plt_entry (llvm_acfg, patch_info);
8792         plt_entry->llvm_used = FALSE;
8793 }
8794
8795 char*
8796 mono_aot_get_direct_call_symbol (MonoJumpInfoType type, gconstpointer data)
8797 {
8798         const char *sym = NULL;
8799
8800         if (llvm_acfg->aot_opts.direct_icalls) {
8801                 if (type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
8802                         /* Call to a C function implementing a jit icall */
8803                         sym = mono_lookup_jit_icall_symbol ((const char *)data);
8804                 } else if (type == MONO_PATCH_INFO_ICALL_ADDR_CALL) {
8805                         MonoMethod *method = (MonoMethod *)data;
8806                         if (!(method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL))
8807                                 sym = mono_lookup_icall_symbol (method);
8808                         else if (llvm_acfg->aot_opts.direct_pinvoke)
8809                                 sym = get_pinvoke_import (llvm_acfg, method);
8810                 }
8811                 if (sym)
8812                         return g_strdup (sym);
8813         }
8814         return NULL;
8815 }
8816
8817 char*
8818 mono_aot_get_plt_symbol (MonoJumpInfoType type, gconstpointer data)
8819 {
8820         MonoJumpInfo *ji = (MonoJumpInfo *)mono_mempool_alloc (llvm_acfg->mempool, sizeof (MonoJumpInfo));
8821         MonoPltEntry *plt_entry;
8822         const char *sym = NULL;
8823
8824         ji->type = type;
8825         ji->data.target = data;
8826
8827         if (!can_encode_patch (llvm_acfg, ji))
8828                 return NULL;
8829
8830         if (llvm_acfg->aot_opts.direct_icalls) {
8831                 if (type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
8832                         /* Call to a C function implementing a jit icall */
8833                         sym = mono_lookup_jit_icall_symbol ((const char *)data);
8834                 } else if (type == MONO_PATCH_INFO_ICALL_ADDR_CALL) {
8835                         MonoMethod *method = (MonoMethod *)data;
8836                         if (!(method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL))
8837                                 sym = mono_lookup_icall_symbol (method);
8838                 }
8839                 if (sym)
8840                         return g_strdup (sym);
8841         }
8842
8843         plt_entry = get_plt_entry (llvm_acfg, ji);
8844         plt_entry->llvm_used = TRUE;
8845
8846 #if defined(TARGET_MACH)
8847         return g_strdup_printf (plt_entry->llvm_symbol + strlen (llvm_acfg->llvm_label_prefix));
8848 #else
8849         return g_strdup_printf (plt_entry->llvm_symbol);
8850 #endif
8851 }
8852
8853 int
8854 mono_aot_get_method_index (MonoMethod *method)
8855 {
8856         g_assert (llvm_acfg);
8857         return get_method_index (llvm_acfg, method);
8858 }
8859
8860 MonoJumpInfo*
8861 mono_aot_patch_info_dup (MonoJumpInfo* ji)
8862 {
8863         MonoJumpInfo *res;
8864
8865         mono_acfg_lock (llvm_acfg);
8866         res = mono_patch_info_dup_mp (llvm_acfg->mempool, ji);
8867         mono_acfg_unlock (llvm_acfg);
8868
8869         return res;
8870 }
8871
8872 static int
8873 execute_system (const char * command)
8874 {
8875         int status = 0;
8876
8877 #if G_HAVE_API_SUPPORT(HAVE_CLASSIC_WINAPI_SUPPORT) && defined(HOST_WIN32)
8878         // We need an extra set of quotes around the whole command to properly handle commands
8879         // with spaces since internally the command is called through "cmd /c.
8880         char * quoted_command = g_strdup_printf ("\"%s\"", command);
8881
8882         int size =  MultiByteToWideChar (CP_UTF8, 0 , quoted_command , -1, NULL , 0);
8883         wchar_t* wstr = g_malloc (sizeof (wchar_t) * size);
8884         MultiByteToWideChar (CP_UTF8, 0, quoted_command, -1, wstr , size);
8885         status = _wsystem (wstr);
8886         g_free (wstr);
8887
8888         g_free (quoted_command);
8889 #elif defined (HAVE_SYSTEM)
8890         status = system (command);
8891 #else
8892         g_assert_not_reached ();
8893 #endif
8894
8895         return status;
8896 }
8897
8898 #ifdef ENABLE_LLVM
8899
8900 /*
8901  * emit_llvm_file:
8902  *
8903  *   Emit the LLVM code into an LLVM bytecode file, and compile it using the LLVM
8904  * tools.
8905  */
8906 static gboolean
8907 emit_llvm_file (MonoAotCompile *acfg)
8908 {
8909         char *command, *opts, *tempbc, *optbc, *output_fname;
8910
8911         if (acfg->aot_opts.llvm_only && acfg->aot_opts.asm_only) {
8912                 tempbc = g_strdup_printf ("%s.bc", acfg->tmpbasename);
8913                 optbc = g_strdup (acfg->aot_opts.llvm_outfile);
8914         } else {
8915                 tempbc = g_strdup_printf ("%s.bc", acfg->tmpbasename);
8916                 optbc = g_strdup_printf ("%s.opt.bc", acfg->tmpbasename);
8917         }
8918
8919         mono_llvm_emit_aot_module (tempbc, g_path_get_basename (acfg->image->name));
8920
8921         /*
8922          * FIXME: Experiment with adding optimizations, the -std-compile-opts set takes
8923          * a lot of time, and doesn't seem to save much space.
8924          * The following optimizations cannot be enabled:
8925          * - 'tailcallelim'
8926          * - 'jump-threading' changes our blockaddress references to int constants.
8927          * - 'basiccg' fails because it contains:
8928          * if (CS && !isa<IntrinsicInst>(II)) {
8929          * and isa<IntrinsicInst> is false for invokes to intrinsics (iltests.exe).
8930          * - 'prune-eh' and 'functionattrs' depend on 'basiccg'.
8931          * The opt list below was produced by taking the output of:
8932          * llvm-as < /dev/null | opt -O2 -disable-output -debug-pass=Arguments
8933          * then removing tailcallelim + the global opts.
8934          * strip-dead-prototypes deletes unused intrinsics definitions.
8935          */
8936         /* The dse pass is disabled because of #13734 and #17616 */
8937         /*
8938          * The dse bug is in DeadStoreElimination.cpp:isOverwrite ():
8939          * // If we have no DataLayout information around, then the size of the store
8940          *  // is inferrable from the pointee type.  If they are the same type, then
8941          * // we know that the store is safe.
8942          * if (AA.getDataLayout() == 0 &&
8943          * Later.Ptr->getType() == Earlier.Ptr->getType()) {
8944          * return OverwriteComplete;
8945          * Here, if 'Earlier' refers to a memset, and Later has no size info, it mistakenly thinks the memset is redundant.
8946          */
8947         if (acfg->aot_opts.llvm_only)
8948                 // FIXME: This doesn't work yet
8949                 opts = g_strdup ("");
8950         else
8951 #if LLVM_API_VERSION > 100
8952                 opts = g_strdup ("-O2 -disable-tail-calls");
8953 #else
8954                 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");
8955 #endif
8956         command = g_strdup_printf ("\"%sopt\" -f %s -o \"%s\" \"%s\"", acfg->aot_opts.llvm_path, opts, optbc, tempbc);
8957         aot_printf (acfg, "Executing opt: %s\n", command);
8958         if (execute_system (command) != 0)
8959                 return FALSE;
8960         g_free (opts);
8961
8962         if (acfg->aot_opts.llvm_only && acfg->aot_opts.asm_only)
8963                 /* Nothing else to do */
8964                 return TRUE;
8965
8966         if (acfg->aot_opts.llvm_only) {
8967                 /* Use the stock clang from xcode */
8968                 // FIXME: arch
8969                 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);
8970
8971                 aot_printf (acfg, "Executing clang: %s\n", command);
8972                 if (execute_system (command) != 0)
8973                         return FALSE;
8974                 return TRUE;
8975         }
8976
8977         if (!acfg->llc_args)
8978                 acfg->llc_args = g_string_new ("");
8979
8980         /* Verbose asm slows down llc greatly */
8981         g_string_append (acfg->llc_args, " -asm-verbose=false");
8982
8983         if (acfg->aot_opts.mtriple)
8984                 g_string_append_printf (acfg->llc_args, " -mtriple=%s", acfg->aot_opts.mtriple);
8985
8986         g_string_append (acfg->llc_args, " -disable-gnu-eh-frame -enable-mono-eh-frame");
8987
8988         g_string_append_printf (acfg->llc_args, " -mono-eh-frame-symbol=%s%s", acfg->user_symbol_prefix, acfg->llvm_eh_frame_symbol);
8989
8990 #if LLVM_API_VERSION > 100
8991         g_string_append_printf (acfg->llc_args, " -disable-tail-calls");
8992 #endif
8993
8994 #if ( defined(TARGET_MACH) && defined(TARGET_ARM) ) || defined(TARGET_ORBIS)
8995         /* ios requires PIC code now */
8996         g_string_append_printf (acfg->llc_args, " -relocation-model=pic");
8997 #else
8998         if (llvm_acfg->aot_opts.static_link)
8999                 g_string_append_printf (acfg->llc_args, " -relocation-model=static");
9000         else
9001                 g_string_append_printf (acfg->llc_args, " -relocation-model=pic");
9002 #endif
9003
9004         if (acfg->llvm_owriter) {
9005                 /* Emit an object file directly */
9006                 output_fname = g_strdup_printf ("%s", acfg->llvm_ofile);
9007                 g_string_append_printf (acfg->llc_args, " -filetype=obj");
9008         } else {
9009                 output_fname = g_strdup_printf ("%s", acfg->llvm_sfile);
9010         }
9011         command = g_strdup_printf ("\"%sllc\" %s -o \"%s\" \"%s.opt.bc\"", acfg->aot_opts.llvm_path, acfg->llc_args->str, output_fname, acfg->tmpbasename);
9012         g_free (output_fname);
9013
9014         aot_printf (acfg, "Executing llc: %s\n", command);
9015
9016         if (execute_system (command) != 0)
9017                 return FALSE;
9018         return TRUE;
9019 }
9020 #endif
9021
9022 static void
9023 emit_code (MonoAotCompile *acfg)
9024 {
9025         int oindex, i, prev_index;
9026         gboolean saved_unbox_info = FALSE;
9027         char symbol [MAX_SYMBOL_SIZE];
9028
9029         if (acfg->aot_opts.llvm_only)
9030                 return;
9031
9032 #if defined(TARGET_POWERPC64)
9033         sprintf (symbol, ".Lgot_addr");
9034         emit_section_change (acfg, ".text", 0);
9035         emit_alignment (acfg, 8);
9036         emit_label (acfg, symbol);
9037         emit_pointer (acfg, acfg->got_symbol);
9038 #endif
9039
9040         /*
9041          * This global symbol is used to compute the address of each method using the
9042          * code_offsets array. It is also used to compute the memory ranges occupied by
9043          * AOT code, so it must be equal to the address of the first emitted method.
9044          */
9045         emit_section_change (acfg, ".text", 0);
9046         emit_alignment_code (acfg, 8);
9047         emit_info_symbol (acfg, "jit_code_start");
9048
9049         /*
9050          * Emit some padding so the local symbol for the first method doesn't have the
9051          * same address as 'methods'.
9052          */
9053         emit_padding (acfg, 16);
9054
9055         for (oindex = 0; oindex < acfg->method_order->len; ++oindex) {
9056                 MonoCompile *cfg;
9057                 MonoMethod *method;
9058
9059                 i = GPOINTER_TO_UINT (g_ptr_array_index (acfg->method_order, oindex));
9060
9061                 cfg = acfg->cfgs [i];
9062
9063                 if (!cfg)
9064                         continue;
9065
9066                 method = cfg->orig_method;
9067
9068                 gboolean dedup_collect = acfg->aot_opts.dedup || (acfg->aot_opts.dedup_include && !acfg->dedup_emit_mode);
9069                 gboolean dedupable = mono_aot_can_dedup (method);
9070
9071                 // cfg->skip is vital for LLVM to work, can't just continue in this loop
9072                 if (dedupable && strcmp (method->name, "wbarrier_conc") && dedup_collect) {
9073                         mono_dedup_cache_method (acfg, method);
9074
9075                         // Don't compile inflated methods if we're in first phase of
9076                         // dedup
9077                         //
9078                         // In second phase, we emit methods that
9079                         // are dedupable. We also emit later methods
9080                         // which are referenced by them and added later.
9081                         // For this reason, when in the dedup_include mode,
9082                         // we never set skip.
9083                         if (acfg->aot_opts.dedup)
9084                                 cfg->skip = TRUE;
9085                 }
9086
9087                 // Don't compile anything in this mode
9088                 if (acfg->aot_opts.dedup_include && !acfg->dedup_emit_mode)
9089                         cfg->skip = TRUE;
9090
9091                 // Compile everything in this mode
9092                 if (acfg->aot_opts.dedup_include && acfg->dedup_emit_mode)
9093                         cfg->skip = FALSE;
9094
9095                 /*if (dedup_collect) {*/
9096                         /*char *name = mono_aot_get_mangled_method_name (method);*/
9097
9098                         /*if (ignore_cfg (cfg))*/
9099                                 /*aot_printf (acfg, "Dedup Skipping %s\n", acfg->image->name, name);*/
9100                         /*else*/
9101                                 /*aot_printf (acfg, "Dedup Keeping %s\n", acfg->image->name, name);*/
9102
9103                         /*g_free (name);*/
9104                 /*}*/
9105
9106                 if (ignore_cfg (cfg))
9107                         continue;
9108
9109                 /* Emit unbox trampoline */
9110                 if (mono_aot_mode_is_full (&acfg->aot_opts) && cfg->orig_method->klass->valuetype) {
9111                         sprintf (symbol, "ut_%d", get_method_index (acfg, method));
9112
9113                         emit_section_change (acfg, ".text", 0);
9114
9115                         if (acfg->thumb_mixed && cfg->compile_llvm) {
9116                                 emit_set_thumb_mode (acfg);
9117                                 fprintf (acfg->fp, "\n.thumb_func\n");
9118                         }
9119
9120                         emit_label (acfg, symbol);
9121
9122                         arch_emit_unbox_trampoline (acfg, cfg, cfg->orig_method, cfg->asm_symbol);
9123
9124                         if (acfg->thumb_mixed && cfg->compile_llvm)
9125                                 emit_set_arm_mode (acfg);
9126
9127                         if (!saved_unbox_info) {
9128                                 char user_symbol [128];
9129                                 GSList *unwind_ops;
9130                                 sprintf (user_symbol, "%sunbox_trampoline_p", acfg->user_symbol_prefix);
9131
9132                                 emit_label (acfg, "ut_end");
9133
9134                                 unwind_ops = mono_unwind_get_cie_program ();
9135                                 save_unwind_info (acfg, user_symbol, unwind_ops);
9136                                 mono_free_unwind_info (unwind_ops);
9137
9138                                 /* Save the unbox trampoline size */
9139                                 emit_symbol_diff (acfg, "ut_end", symbol, 0);
9140
9141                                 saved_unbox_info = TRUE;
9142                         }
9143                 }
9144
9145                 if (cfg->compile_llvm) {
9146                         acfg->stats.llvm_count ++;
9147                 } else {
9148                         emit_method_code (acfg, cfg);
9149                 }
9150         }
9151
9152         emit_section_change (acfg, ".text", 0);
9153         emit_alignment_code (acfg, 8);
9154         emit_info_symbol (acfg, "jit_code_end");
9155
9156         /* To distinguish it from the next symbol */
9157         emit_padding (acfg, 4);
9158
9159         /*
9160          * Add .no_dead_strip directives for all LLVM methods to prevent the OSX linker
9161          * from optimizing them away, since it doesn't see that code_offsets references them.
9162          * JITted methods don't need this since they are referenced using assembler local
9163          * symbols.
9164          * FIXME: This is why write-symbols doesn't work on OSX ?
9165          */
9166         if (acfg->llvm && acfg->need_no_dead_strip) {
9167                 fprintf (acfg->fp, "\n");
9168                 for (i = 0; i < acfg->nmethods; ++i) {
9169                         if (acfg->cfgs [i] && acfg->cfgs [i]->compile_llvm)
9170                                 fprintf (acfg->fp, ".no_dead_strip %s\n", acfg->cfgs [i]->asm_symbol);
9171                 }
9172         }
9173
9174         /*
9175          * To work around linker issues, we emit a table of branches, and disassemble them at runtime.
9176          * This is PIE code, and the linker can update it if needed.
9177          */
9178
9179         sprintf (symbol, "method_addresses");
9180         emit_section_change (acfg, ".text", 1);
9181         emit_alignment_code (acfg, 8);
9182         emit_info_symbol (acfg, symbol);
9183         if (acfg->aot_opts.write_symbols)
9184                 emit_local_symbol (acfg, symbol, "method_addresses_end", TRUE);
9185         emit_unset_mode (acfg);
9186         if (acfg->need_no_dead_strip)
9187                 fprintf (acfg->fp, "    .no_dead_strip %s\n", symbol);
9188
9189         for (i = 0; i < acfg->nmethods; ++i) {
9190 #ifdef MONO_ARCH_AOT_SUPPORTED
9191                 int call_size;
9192
9193                 if (!ignore_cfg (acfg->cfgs [i])) {
9194                         arch_emit_direct_call (acfg, acfg->cfgs [i]->asm_symbol, FALSE, acfg->thumb_mixed && acfg->cfgs [i]->compile_llvm, NULL, &call_size);
9195                 } else {
9196                         arch_emit_direct_call (acfg, symbol, FALSE, FALSE, NULL, &call_size);
9197                 }
9198 #endif
9199         }
9200
9201         sprintf (symbol, "method_addresses_end");
9202         emit_label (acfg, symbol);
9203         emit_line (acfg);
9204
9205         /* Emit a sorted table mapping methods to the index of their unbox trampolines */
9206         sprintf (symbol, "unbox_trampolines");
9207         emit_section_change (acfg, RODATA_SECT, 0);
9208         emit_alignment (acfg, 8);
9209         emit_info_symbol (acfg, symbol);
9210
9211         prev_index = -1;
9212         for (i = 0; i < acfg->nmethods; ++i) {
9213                 MonoCompile *cfg;
9214                 MonoMethod *method;
9215                 int index;
9216
9217                 cfg = acfg->cfgs [i];
9218                 if (ignore_cfg (cfg))
9219                         continue;
9220
9221                 method = cfg->orig_method;
9222
9223                 if (mono_aot_mode_is_full (&acfg->aot_opts) && cfg->orig_method->klass->valuetype) {
9224                         index = get_method_index (acfg, method);
9225
9226                         emit_int32 (acfg, index);
9227                         /* Make sure the table is sorted by index */
9228                         g_assert (index > prev_index);
9229                         prev_index = index;
9230                 }
9231         }
9232         sprintf (symbol, "unbox_trampolines_end");
9233         emit_info_symbol (acfg, symbol);
9234         emit_int32 (acfg, 0);
9235
9236         /* Emit a separate table with the trampoline addresses/offsets */
9237         sprintf (symbol, "unbox_trampoline_addresses");
9238         emit_section_change (acfg, ".text", 0);
9239         emit_alignment_code (acfg, 8);
9240         emit_info_symbol (acfg, symbol);
9241
9242         for (i = 0; i < acfg->nmethods; ++i) {
9243                 MonoCompile *cfg;
9244                 MonoMethod *method;
9245                 int index;
9246
9247                 cfg = acfg->cfgs [i];
9248                 if (ignore_cfg (cfg))
9249                         continue;
9250
9251                 method = cfg->orig_method;
9252
9253                 if (mono_aot_mode_is_full (&acfg->aot_opts) && cfg->orig_method->klass->valuetype) {
9254 #ifdef MONO_ARCH_AOT_SUPPORTED
9255                         int call_size;
9256
9257                         index = get_method_index (acfg, method);
9258                         sprintf (symbol, "ut_%d", index);
9259
9260                         arch_emit_direct_call (acfg, symbol, FALSE, acfg->thumb_mixed && cfg->compile_llvm, NULL, &call_size);
9261 #endif
9262                 }
9263         }
9264         emit_int32 (acfg, 0);
9265 }
9266
9267 static void
9268 emit_info (MonoAotCompile *acfg)
9269 {
9270         int oindex, i;
9271         gint32 *offsets;
9272
9273         offsets = g_new0 (gint32, acfg->nmethods);
9274
9275         for (oindex = 0; oindex < acfg->method_order->len; ++oindex) {
9276                 i = GPOINTER_TO_UINT (g_ptr_array_index (acfg->method_order, oindex));
9277
9278                 if (acfg->cfgs [i]) {
9279                         emit_method_info (acfg, acfg->cfgs [i]);
9280                         offsets [i] = acfg->cfgs [i]->method_info_offset;
9281                 } else {
9282                         offsets [i] = 0;
9283                 }
9284         }
9285
9286         acfg->stats.offsets_size += emit_offset_table (acfg, "method_info_offsets", MONO_AOT_TABLE_METHOD_INFO_OFFSETS, acfg->nmethods, 10, offsets);
9287
9288         g_free (offsets);
9289 }
9290
9291 #endif /* #if !defined(DISABLE_AOT) && !defined(DISABLE_JIT) */
9292
9293 #define rot(x,k) (((x)<<(k)) | ((x)>>(32-(k))))
9294 #define mix(a,b,c) { \
9295         a -= c;  a ^= rot(c, 4);  c += b; \
9296         b -= a;  b ^= rot(a, 6);  a += c; \
9297         c -= b;  c ^= rot(b, 8);  b += a; \
9298         a -= c;  a ^= rot(c,16);  c += b; \
9299         b -= a;  b ^= rot(a,19);  a += c; \
9300         c -= b;  c ^= rot(b, 4);  b += a; \
9301 }
9302 #define final(a,b,c) { \
9303         c ^= b; c -= rot(b,14); \
9304         a ^= c; a -= rot(c,11); \
9305         b ^= a; b -= rot(a,25); \
9306         c ^= b; c -= rot(b,16); \
9307         a ^= c; a -= rot(c,4);  \
9308         b ^= a; b -= rot(a,14); \
9309         c ^= b; c -= rot(b,24); \
9310 }
9311
9312 static guint
9313 mono_aot_type_hash (MonoType *t1)
9314 {
9315         guint hash = t1->type;
9316
9317         hash |= t1->byref << 6; /* do not collide with t1->type values */
9318         switch (t1->type) {
9319         case MONO_TYPE_VALUETYPE:
9320         case MONO_TYPE_CLASS:
9321         case MONO_TYPE_SZARRAY:
9322                 /* check if the distribution is good enough */
9323                 return ((hash << 5) - hash) ^ mono_metadata_str_hash (t1->data.klass->name);
9324         case MONO_TYPE_PTR:
9325                 return ((hash << 5) - hash) ^ mono_metadata_type_hash (t1->data.type);
9326         case MONO_TYPE_ARRAY:
9327                 return ((hash << 5) - hash) ^ mono_metadata_type_hash (&t1->data.array->eklass->byval_arg);
9328         case MONO_TYPE_GENERICINST:
9329                 return ((hash << 5) - hash) ^ 0;
9330         default:
9331                 return hash;
9332         }
9333 }
9334
9335 /*
9336  * mono_aot_method_hash:
9337  *
9338  *   Return a hash code for methods which only depends on metadata.
9339  */
9340 guint32
9341 mono_aot_method_hash (MonoMethod *method)
9342 {
9343         MonoMethodSignature *sig;
9344         MonoClass *klass;
9345         int i, hindex;
9346         int hashes_count;
9347         guint32 *hashes_start, *hashes;
9348         guint32 a, b, c;
9349         MonoGenericInst *class_ginst = NULL;
9350         MonoGenericInst *ginst = NULL;
9351
9352         /* Similar to the hash in mono_method_get_imt_slot () */
9353
9354         sig = mono_method_signature (method);
9355
9356         if (mono_class_is_ginst (method->klass))
9357                 class_ginst = mono_class_get_generic_class (method->klass)->context.class_inst;
9358         if (method->is_inflated)
9359                 ginst = ((MonoMethodInflated*)method)->context.method_inst;
9360
9361         hashes_count = sig->param_count + 5 + (class_ginst ? class_ginst->type_argc : 0) + (ginst ? ginst->type_argc : 0);
9362         hashes_start = (guint32 *)g_malloc0 (hashes_count * sizeof (guint32));
9363         hashes = hashes_start;
9364
9365         /* Some wrappers are assigned to random classes */
9366         if (!method->wrapper_type || method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)
9367                 klass = method->klass;
9368         else
9369                 klass = mono_defaults.object_class;
9370
9371         if (!method->wrapper_type) {
9372                 char *full_name;
9373
9374                 if (mono_class_is_ginst (klass))
9375                         full_name = mono_type_full_name (&mono_class_get_generic_class (klass)->container_class->byval_arg);
9376                 else
9377                         full_name = mono_type_full_name (&klass->byval_arg);
9378
9379                 hashes [0] = mono_metadata_str_hash (full_name);
9380                 hashes [1] = 0;
9381                 g_free (full_name);
9382         } else {
9383                 hashes [0] = mono_metadata_str_hash (klass->name);
9384                 hashes [1] = mono_metadata_str_hash (klass->name_space);
9385         }
9386         if (method->wrapper_type == MONO_WRAPPER_STFLD || method->wrapper_type == MONO_WRAPPER_LDFLD || method->wrapper_type == MONO_WRAPPER_LDFLDA)
9387                 /* The method name includes a stringified pointer */
9388                 hashes [2] = 0;
9389         else
9390                 hashes [2] = mono_metadata_str_hash (method->name);
9391         hashes [3] = method->wrapper_type;
9392         hashes [4] = mono_aot_type_hash (sig->ret);
9393         hindex = 5;
9394         for (i = 0; i < sig->param_count; i++) {
9395                 hashes [hindex ++] = mono_aot_type_hash (sig->params [i]);
9396         }
9397         if (class_ginst) {
9398                 for (i = 0; i < class_ginst->type_argc; ++i)
9399                         hashes [hindex ++] = mono_aot_type_hash (class_ginst->type_argv [i]);
9400         }
9401         if (ginst) {
9402                 for (i = 0; i < ginst->type_argc; ++i)
9403                         hashes [hindex ++] = mono_aot_type_hash (ginst->type_argv [i]);
9404         }
9405         g_assert (hindex == hashes_count);
9406
9407         /* Setup internal state */
9408         a = b = c = 0xdeadbeef + (((guint32)hashes_count)<<2);
9409
9410         /* Handle most of the hashes */
9411         while (hashes_count > 3) {
9412                 a += hashes [0];
9413                 b += hashes [1];
9414                 c += hashes [2];
9415                 mix (a,b,c);
9416                 hashes_count -= 3;
9417                 hashes += 3;
9418         }
9419
9420         /* Handle the last 3 hashes (all the case statements fall through) */
9421         switch (hashes_count) {
9422         case 3 : c += hashes [2];
9423         case 2 : b += hashes [1];
9424         case 1 : a += hashes [0];
9425                 final (a,b,c);
9426         case 0: /* nothing left to add */
9427                 break;
9428         }
9429
9430         g_free (hashes_start);
9431
9432         return c;
9433 }
9434 #undef rot
9435 #undef mix
9436 #undef final
9437
9438 /*
9439  * mono_aot_get_array_helper_from_wrapper;
9440  *
9441  * Get the helper method in Array called by an array wrapper method.
9442  */
9443 MonoMethod*
9444 mono_aot_get_array_helper_from_wrapper (MonoMethod *method)
9445 {
9446         MonoMethod *m;
9447         const char *prefix;
9448         MonoGenericContext ctx;
9449         MonoType *args [16];
9450         char *mname, *iname, *s, *s2, *helper_name = NULL;
9451
9452         prefix = "System.Collections.Generic";
9453         s = g_strdup_printf ("%s", method->name + strlen (prefix) + 1);
9454         s2 = strstr (s, "`1.");
9455         g_assert (s2);
9456         s2 [0] = '\0';
9457         iname = s;
9458         mname = s2 + 3;
9459
9460         //printf ("X: %s %s\n", iname, mname);
9461
9462         if (!strcmp (iname, "IList"))
9463                 helper_name = g_strdup_printf ("InternalArray__%s", mname);
9464         else
9465                 helper_name = g_strdup_printf ("InternalArray__%s_%s", iname, mname);
9466         m = mono_class_get_method_from_name (mono_defaults.array_class, helper_name, mono_method_signature (method)->param_count);
9467         g_assert (m);
9468         g_free (helper_name);
9469         g_free (s);
9470
9471         if (m->is_generic) {
9472                 ERROR_DECL (error);
9473                 memset (&ctx, 0, sizeof (ctx));
9474                 args [0] = &method->klass->element_class->byval_arg;
9475                 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
9476                 m = mono_class_inflate_generic_method_checked (m, &ctx, error);
9477                 g_assert (mono_error_ok (error)); /* FIXME don't swallow the error */
9478         }
9479
9480         return m;
9481 }
9482
9483 #if !defined(DISABLE_AOT) && !defined(DISABLE_JIT)
9484
9485 typedef struct HashEntry {
9486     guint32 key, value, index;
9487         struct HashEntry *next;
9488 } HashEntry;
9489
9490 /*
9491  * emit_extra_methods:
9492  *
9493  * Emit methods which are not in the METHOD table, like wrappers.
9494  */
9495 static void
9496 emit_extra_methods (MonoAotCompile *acfg)
9497 {
9498         int i, table_size, buf_size;
9499         guint8 *p, *buf;
9500         guint32 *info_offsets;
9501         guint32 hash;
9502         GPtrArray *table;
9503         HashEntry *entry, *new_entry;
9504         int nmethods, max_chain_length;
9505         int *chain_lengths;
9506
9507         info_offsets = g_new0 (guint32, acfg->extra_methods->len);
9508
9509         /* Emit method info */
9510         nmethods = 0;
9511         for (i = 0; i < acfg->extra_methods->len; ++i) {
9512                 MonoMethod *method = (MonoMethod *)g_ptr_array_index (acfg->extra_methods, i);
9513                 MonoCompile *cfg = (MonoCompile *)g_hash_table_lookup (acfg->method_to_cfg, method);
9514
9515                 if (ignore_cfg (cfg))
9516                         continue;
9517
9518                 buf_size = 10240;
9519                 p = buf = (guint8 *)g_malloc (buf_size);
9520
9521                 nmethods ++;
9522
9523                 method = cfg->method_to_register;
9524
9525                 encode_method_ref (acfg, method, p, &p);
9526
9527                 g_assert ((p - buf) < buf_size);
9528
9529                 info_offsets [i] = add_to_blob (acfg, buf, p - buf);
9530                 g_free (buf);
9531         }
9532
9533         /*
9534          * Construct a chained hash table for mapping indexes in extra_method_info to
9535          * method indexes.
9536          */
9537         table_size = g_spaced_primes_closest ((int)(nmethods * 1.5));
9538         table = g_ptr_array_sized_new (table_size);
9539         for (i = 0; i < table_size; ++i)
9540                 g_ptr_array_add (table, NULL);
9541         chain_lengths = g_new0 (int, table_size);
9542         max_chain_length = 0;
9543         for (i = 0; i < acfg->extra_methods->len; ++i) {
9544                 MonoMethod *method = (MonoMethod *)g_ptr_array_index (acfg->extra_methods, i);
9545                 MonoCompile *cfg = (MonoCompile *)g_hash_table_lookup (acfg->method_to_cfg, method);
9546                 guint32 key, value;
9547
9548                 if (ignore_cfg (cfg))
9549                         continue;
9550
9551                 key = info_offsets [i];
9552                 value = get_method_index (acfg, method);
9553
9554                 hash = mono_aot_method_hash (method) % table_size;
9555                 //printf ("X: %s %x\n", mono_method_get_full_name (method), mono_aot_method_hash (method));
9556
9557                 chain_lengths [hash] ++;
9558                 max_chain_length = MAX (max_chain_length, chain_lengths [hash]);
9559
9560                 new_entry = (HashEntry *)mono_mempool_alloc0 (acfg->mempool, sizeof (HashEntry));
9561                 new_entry->key = key;
9562                 new_entry->value = value;
9563
9564                 entry = (HashEntry *)g_ptr_array_index (table, hash);
9565                 if (entry == NULL) {
9566                         new_entry->index = hash;
9567                         g_ptr_array_index (table, hash) = new_entry;
9568                 } else {
9569                         while (entry->next)
9570                                 entry = entry->next;
9571
9572                         entry->next = new_entry;
9573                         new_entry->index = table->len;
9574                         g_ptr_array_add (table, new_entry);
9575                 }
9576         }
9577         g_free (chain_lengths);
9578
9579         //printf ("MAX: %d\n", max_chain_length);
9580
9581         buf_size = table->len * 12 + 4;
9582         p = buf = (guint8 *)g_malloc (buf_size);
9583         encode_int (table_size, p, &p);
9584
9585         for (i = 0; i < table->len; ++i) {
9586                 HashEntry *entry = (HashEntry *)g_ptr_array_index (table, i);
9587
9588                 if (entry == NULL) {
9589                         encode_int (0, p, &p);
9590                         encode_int (0, p, &p);
9591                         encode_int (0, p, &p);
9592                 } else {
9593                         //g_assert (entry->key > 0);
9594                         encode_int (entry->key, p, &p);
9595                         encode_int (entry->value, p, &p);
9596                         if (entry->next)
9597                                 encode_int (entry->next->index, p, &p);
9598                         else
9599                                 encode_int (0, p, &p);
9600                 }
9601         }
9602         g_assert (p - buf <= buf_size);
9603
9604         /* Emit the table */
9605         emit_aot_data (acfg, MONO_AOT_TABLE_EXTRA_METHOD_TABLE, "extra_method_table", buf, p - buf);
9606
9607         g_free (buf);
9608
9609         /*
9610          * Emit a table reverse mapping method indexes to their index in extra_method_info.
9611          * This is used by mono_aot_find_jit_info ().
9612          */
9613         buf_size = acfg->extra_methods->len * 8 + 4;
9614         p = buf = (guint8 *)g_malloc (buf_size);
9615         encode_int (acfg->extra_methods->len, p, &p);
9616         for (i = 0; i < acfg->extra_methods->len; ++i) {
9617                 MonoMethod *method = (MonoMethod *)g_ptr_array_index (acfg->extra_methods, i);
9618
9619                 encode_int (get_method_index (acfg, method), p, &p);
9620                 encode_int (info_offsets [i], p, &p);
9621         }
9622         emit_aot_data (acfg, MONO_AOT_TABLE_EXTRA_METHOD_INFO_OFFSETS, "extra_method_info_offsets", buf, p - buf);
9623
9624         g_free (buf);
9625         g_free (info_offsets);
9626         g_ptr_array_free (table, TRUE);
9627 }
9628
9629 static void
9630 generate_aotid (guint8* aotid)
9631 {
9632         gpointer rand_handle;
9633         ERROR_DECL (error);
9634
9635         mono_rand_open ();
9636         rand_handle = mono_rand_init (NULL, 0);
9637
9638         mono_rand_try_get_bytes (&rand_handle, aotid, 16, error);
9639         mono_error_assert_ok (error);
9640
9641         mono_rand_close (rand_handle);
9642 }
9643
9644 static void
9645 emit_exception_info (MonoAotCompile *acfg)
9646 {
9647         int i;
9648         gint32 *offsets;
9649         SeqPointData sp_data;
9650         gboolean seq_points_to_file = FALSE;
9651
9652         offsets = g_new0 (gint32, acfg->nmethods);
9653         for (i = 0; i < acfg->nmethods; ++i) {
9654                 if (acfg->cfgs [i]) {
9655                         MonoCompile *cfg = acfg->cfgs [i];
9656
9657                         // By design aot-runtime decode_exception_debug_info is not able to load sequence point debug data from a file.
9658                         // As it is not possible to load debug data from a file its is also not possible to store it in a file.
9659                         gboolean method_seq_points_to_file = acfg->aot_opts.gen_msym_dir &&
9660                                 cfg->gen_seq_points && !cfg->gen_sdb_seq_points;
9661                         gboolean method_seq_points_to_binary = cfg->gen_seq_points && !method_seq_points_to_file;
9662
9663                         emit_exception_debug_info (acfg, cfg, method_seq_points_to_binary);
9664                         offsets [i] = cfg->ex_info_offset;
9665
9666                         if (method_seq_points_to_file) {
9667                                 if (!seq_points_to_file) {
9668                                         mono_seq_point_data_init (&sp_data, acfg->nmethods);
9669                                         seq_points_to_file = TRUE;
9670                                 }
9671                                 mono_seq_point_data_add (&sp_data, cfg->method->token, cfg->method_index, cfg->seq_point_info);
9672                         }
9673                 } else {
9674                         offsets [i] = 0;
9675                 }
9676         }
9677
9678         if (seq_points_to_file) {
9679                 char *aotid = mono_guid_to_string_minimal (acfg->image->aotid);
9680                 char *dir = g_build_filename (acfg->aot_opts.gen_msym_dir_path, aotid, NULL);
9681                 char *image_basename = g_path_get_basename (acfg->image->name);
9682                 char *aot_file = g_strdup_printf("%s%s", image_basename, SEQ_POINT_AOT_EXT);
9683                 char *aot_file_path = g_build_filename (dir, aot_file, NULL);
9684
9685                 if (g_ensure_directory_exists (aot_file_path) == FALSE) {
9686                         fprintf (stderr, "AOT : failed to create msym directory: %s\n", aot_file_path);
9687                         exit (1);
9688                 }
9689
9690                 mono_seq_point_data_write (&sp_data, aot_file_path);
9691                 mono_seq_point_data_free (&sp_data);
9692
9693                 g_free (aotid);
9694                 g_free (dir);
9695                 g_free (image_basename);
9696                 g_free (aot_file);
9697                 g_free (aot_file_path);
9698         }
9699
9700         acfg->stats.offsets_size += emit_offset_table (acfg, "ex_info_offsets", MONO_AOT_TABLE_EX_INFO_OFFSETS, acfg->nmethods, 10, offsets);
9701         g_free (offsets);
9702 }
9703
9704 static void
9705 emit_unwind_info (MonoAotCompile *acfg)
9706 {
9707         int i;
9708         char symbol [128];
9709
9710         if (acfg->aot_opts.llvm_only) {
9711                 g_assert (acfg->unwind_ops->len == 0);
9712                 return;
9713         }
9714
9715         /*
9716          * The unwind info contains a lot of duplicates so we emit each unique
9717          * entry once, and only store the offset from the start of the table in the
9718          * exception info.
9719          */
9720
9721         sprintf (symbol, "unwind_info");
9722         emit_section_change (acfg, RODATA_SECT, 1);
9723         emit_alignment (acfg, 8);
9724         emit_info_symbol (acfg, symbol);
9725
9726         for (i = 0; i < acfg->unwind_ops->len; ++i) {
9727                 guint32 index = GPOINTER_TO_UINT (g_ptr_array_index (acfg->unwind_ops, i));
9728                 guint8 *unwind_info;
9729                 guint32 unwind_info_len;
9730                 guint8 buf [16];
9731                 guint8 *p;
9732
9733                 unwind_info = mono_get_cached_unwind_info (index, &unwind_info_len);
9734
9735                 p = buf;
9736                 encode_value (unwind_info_len, p, &p);
9737                 emit_bytes (acfg, buf, p - buf);
9738                 emit_bytes (acfg, unwind_info, unwind_info_len);
9739
9740                 acfg->stats.unwind_info_size += (p - buf) + unwind_info_len;
9741         }
9742 }
9743
9744 static void
9745 emit_class_info (MonoAotCompile *acfg)
9746 {
9747         int i;
9748         gint32 *offsets;
9749
9750         offsets = g_new0 (gint32, acfg->image->tables [MONO_TABLE_TYPEDEF].rows);
9751         for (i = 0; i < acfg->image->tables [MONO_TABLE_TYPEDEF].rows; ++i)
9752                 offsets [i] = emit_klass_info (acfg, MONO_TOKEN_TYPE_DEF | (i + 1));
9753
9754         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);
9755         g_free (offsets);
9756 }
9757
9758 typedef struct ClassNameTableEntry {
9759         guint32 token, index;
9760         struct ClassNameTableEntry *next;
9761 } ClassNameTableEntry;
9762
9763 static void
9764 emit_class_name_table (MonoAotCompile *acfg)
9765 {
9766         int i, table_size, buf_size;
9767         guint32 token, hash;
9768         MonoClass *klass;
9769         GPtrArray *table;
9770         char *full_name;
9771         guint8 *buf, *p;
9772         ClassNameTableEntry *entry, *new_entry;
9773
9774         /*
9775          * Construct a chained hash table for mapping class names to typedef tokens.
9776          */
9777         table_size = g_spaced_primes_closest ((int)(acfg->image->tables [MONO_TABLE_TYPEDEF].rows * 1.5));
9778         table = g_ptr_array_sized_new (table_size);
9779         for (i = 0; i < table_size; ++i)
9780                 g_ptr_array_add (table, NULL);
9781         for (i = 0; i < acfg->image->tables [MONO_TABLE_TYPEDEF].rows; ++i) {
9782                 ERROR_DECL (error);
9783                 token = MONO_TOKEN_TYPE_DEF | (i + 1);
9784                 klass = mono_class_get_checked (acfg->image, token, error);
9785                 if (!klass) {
9786                         mono_error_cleanup (error);
9787                         continue;
9788                 }
9789                 full_name = mono_type_get_name_full (mono_class_get_type (klass), MONO_TYPE_NAME_FORMAT_FULL_NAME);
9790                 hash = mono_metadata_str_hash (full_name) % table_size;
9791                 g_free (full_name);
9792
9793                 /* FIXME: Allocate from the mempool */
9794                 new_entry = g_new0 (ClassNameTableEntry, 1);
9795                 new_entry->token = token;
9796
9797                 entry = (ClassNameTableEntry *)g_ptr_array_index (table, hash);
9798                 if (entry == NULL) {
9799                         new_entry->index = hash;
9800                         g_ptr_array_index (table, hash) = new_entry;
9801                 } else {
9802                         while (entry->next)
9803                                 entry = entry->next;
9804
9805                         entry->next = new_entry;
9806                         new_entry->index = table->len;
9807                         g_ptr_array_add (table, new_entry);
9808                 }
9809         }
9810
9811         /* Emit the table */
9812         buf_size = table->len * 4 + 4;
9813         p = buf = (guint8 *)g_malloc0 (buf_size);
9814
9815         /* FIXME: Optimize memory usage */
9816         g_assert (table_size < 65000);
9817         encode_int16 (table_size, p, &p);
9818         g_assert (table->len < 65000);
9819         for (i = 0; i < table->len; ++i) {
9820                 ClassNameTableEntry *entry = (ClassNameTableEntry *)g_ptr_array_index (table, i);
9821
9822                 if (entry == NULL) {
9823                         encode_int16 (0, p, &p);
9824                         encode_int16 (0, p, &p);
9825                 } else {
9826                         encode_int16 (mono_metadata_token_index (entry->token), p, &p);
9827                         if (entry->next)
9828                                 encode_int16 (entry->next->index, p, &p);
9829                         else
9830                                 encode_int16 (0, p, &p);
9831                 }
9832                 g_free (entry);
9833         }
9834         g_assert (p - buf <= buf_size);
9835         g_ptr_array_free (table, TRUE);
9836
9837         emit_aot_data (acfg, MONO_AOT_TABLE_CLASS_NAME, "class_name_table", buf, p - buf);
9838
9839         g_free (buf);
9840 }
9841
9842 static void
9843 emit_image_table (MonoAotCompile *acfg)
9844 {
9845         int i, buf_size;
9846         guint8 *buf, *p;
9847
9848         /*
9849          * The image table is small but referenced in a lot of places.
9850          * So we emit it at once, and reference its elements by an index.
9851          */
9852         buf_size = acfg->image_table->len * 28 + 4;
9853         for (i = 0; i < acfg->image_table->len; i++) {
9854                 MonoImage *image = (MonoImage*)g_ptr_array_index (acfg->image_table, i);
9855                 MonoAssemblyName *aname = &image->assembly->aname;
9856
9857                 buf_size += strlen (image->assembly_name) + strlen (image->guid) + (aname->culture ? strlen (aname->culture) : 1) + strlen ((char*)aname->public_key_token) + 4;
9858         }
9859
9860         buf = p = (guint8 *)g_malloc0 (buf_size);
9861         encode_int (acfg->image_table->len, p, &p);
9862         for (i = 0; i < acfg->image_table->len; i++) {
9863                 MonoImage *image = (MonoImage*)g_ptr_array_index (acfg->image_table, i);
9864                 MonoAssemblyName *aname = &image->assembly->aname;
9865
9866                 /* FIXME: Support multi-module assemblies */
9867                 g_assert (image->assembly->image == image);
9868
9869                 encode_string (image->assembly_name, p, &p);
9870                 encode_string (image->guid, p, &p);
9871                 encode_string (aname->culture ? aname->culture : "", p, &p);
9872                 encode_string ((const char*)aname->public_key_token, p, &p);
9873
9874                 while (GPOINTER_TO_UINT (p) % 8 != 0)
9875                         p ++;
9876
9877                 encode_int (aname->flags, p, &p);
9878                 encode_int (aname->major, p, &p);
9879                 encode_int (aname->minor, p, &p);
9880                 encode_int (aname->build, p, &p);
9881                 encode_int (aname->revision, p, &p);
9882         }
9883         g_assert (p - buf <= buf_size);
9884
9885         emit_aot_data (acfg, MONO_AOT_TABLE_IMAGE_TABLE, "image_table", buf, p - buf);
9886
9887         g_free (buf);
9888 }
9889
9890 static void
9891 emit_weak_field_indexes (MonoAotCompile *acfg)
9892 {
9893         GHashTable *indexes;
9894         GHashTableIter iter;
9895         gpointer key, value;
9896         int buf_size;
9897         guint8 *buf, *p;
9898
9899         /* Emit a table of weak field indexes, since computing these at runtime is expensive */
9900         mono_assembly_init_weak_fields (acfg->image);
9901         indexes = acfg->image->weak_field_indexes;
9902         g_assert (indexes);
9903
9904         buf_size = (g_hash_table_size (indexes) + 1) * 4;
9905         buf = p = (guint8 *)g_malloc0 (buf_size);
9906
9907         encode_int (g_hash_table_size (indexes), p, &p);
9908         g_hash_table_iter_init (&iter, indexes);
9909         while (g_hash_table_iter_next (&iter, &key, &value)) {
9910                 guint32 index = GPOINTER_TO_UINT (key);
9911                 encode_int (index, p, &p);
9912         }
9913         g_assert (p - buf <= buf_size);
9914
9915         emit_aot_data (acfg, MONO_AOT_TABLE_WEAK_FIELD_INDEXES, "weak_field_indexes", buf, p - buf);
9916
9917         g_free (buf);
9918 }
9919
9920 static void
9921 emit_got_info (MonoAotCompile *acfg, gboolean llvm)
9922 {
9923         int i, first_plt_got_patch = 0, buf_size;
9924         guint8 *p, *buf;
9925         guint32 *got_info_offsets;
9926         GotInfo *info = llvm ? &acfg->llvm_got_info : &acfg->got_info;
9927
9928         /* Add the patches needed by the PLT to the GOT */
9929         if (!llvm) {
9930                 acfg->plt_got_offset_base = acfg->got_offset;
9931                 first_plt_got_patch = info->got_patches->len;
9932                 for (i = 1; i < acfg->plt_offset; ++i) {
9933                         MonoPltEntry *plt_entry = (MonoPltEntry *)g_hash_table_lookup (acfg->plt_offset_to_entry, GUINT_TO_POINTER (i));
9934
9935                         g_ptr_array_add (info->got_patches, plt_entry->ji);
9936
9937                         acfg->stats.got_slot_types [plt_entry->ji->type] ++;
9938                 }
9939
9940                 acfg->got_offset += acfg->plt_offset;
9941         }
9942
9943         /**
9944          * FIXME:
9945          * - optimize offsets table.
9946          * - reduce number of exported symbols.
9947          * - emit info for a klass only once.
9948          * - determine when a method uses a GOT slot which is guaranteed to be already
9949          *   initialized.
9950          * - clean up and document the code.
9951          * - use String.Empty in class libs.
9952          */
9953
9954         /* Encode info required to decode shared GOT entries */
9955         buf_size = info->got_patches->len * 128;
9956         p = buf = (guint8 *)mono_mempool_alloc (acfg->mempool, buf_size);
9957         got_info_offsets = (guint32 *)mono_mempool_alloc (acfg->mempool, info->got_patches->len * sizeof (guint32));
9958         if (!llvm) {
9959                 acfg->plt_got_info_offsets = (guint32 *)mono_mempool_alloc (acfg->mempool, acfg->plt_offset * sizeof (guint32));
9960                 /* Unused */
9961                 if (acfg->plt_offset)
9962                         acfg->plt_got_info_offsets [0] = 0;
9963         }
9964         for (i = 0; i < info->got_patches->len; ++i) {
9965                 MonoJumpInfo *ji = (MonoJumpInfo *)g_ptr_array_index (info->got_patches, i);
9966                 guint8 *p2;
9967
9968                 p = buf;
9969
9970                 encode_value (ji->type, p, &p);
9971                 p2 = p;
9972                 encode_patch (acfg, ji, p, &p);
9973                 acfg->stats.got_slot_info_sizes [ji->type] += p - p2;
9974                 g_assert (p - buf <= buf_size);
9975                 got_info_offsets [i] = add_to_blob (acfg, buf, p - buf);
9976
9977                 if (!llvm && i >= first_plt_got_patch)
9978                         acfg->plt_got_info_offsets [i - first_plt_got_patch + 1] = got_info_offsets [i];
9979                 acfg->stats.got_info_size += p - buf;
9980         }
9981
9982         /* Emit got_info_offsets table */
9983
9984         /* No need to emit offsets for the got plt entries, the plt embeds them directly */
9985         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);
9986 }
9987
9988 static void
9989 emit_got (MonoAotCompile *acfg)
9990 {
9991         char symbol [MAX_SYMBOL_SIZE];
9992
9993         if (acfg->aot_opts.llvm_only)
9994                 return;
9995
9996         /* Don't make GOT global so accesses to it don't need relocations */
9997         sprintf (symbol, "%s", acfg->got_symbol);
9998
9999 #ifdef TARGET_MACH
10000         emit_unset_mode (acfg);
10001         fprintf (acfg->fp, ".section __DATA, __bss\n");
10002         emit_alignment (acfg, 8);
10003         if (acfg->llvm)
10004                 emit_info_symbol (acfg, "jit_got");
10005         fprintf (acfg->fp, ".lcomm %s, %d\n", acfg->got_symbol, (int)(acfg->got_offset * sizeof (gpointer)));
10006 #else
10007         emit_section_change (acfg, ".bss", 0);
10008         emit_alignment (acfg, 8);
10009         if (acfg->aot_opts.write_symbols)
10010                 emit_local_symbol (acfg, symbol, "got_end", FALSE);
10011         emit_label (acfg, symbol);
10012         if (acfg->llvm)
10013                 emit_info_symbol (acfg, "jit_got");
10014         if (acfg->got_offset > 0)
10015                 emit_zero_bytes (acfg, (int)(acfg->got_offset * sizeof (gpointer)));
10016 #endif
10017
10018         sprintf (symbol, "got_end");
10019         emit_label (acfg, symbol);
10020 }
10021
10022 typedef struct GlobalsTableEntry {
10023         guint32 value, index;
10024         struct GlobalsTableEntry *next;
10025 } GlobalsTableEntry;
10026
10027 #ifdef TARGET_WIN32_MSVC
10028 #define DLL_ENTRY_POINT "DllMain"
10029
10030 static void
10031 emit_library_info (MonoAotCompile *acfg)
10032 {
10033         // Only include for shared libraries linked directly from generated object.
10034         if (link_shared_library (acfg)) {
10035                 char    *name = NULL;
10036                 char    symbol [MAX_SYMBOL_SIZE];
10037
10038                 // Ask linker to export all global symbols.
10039                 emit_section_change (acfg, ".drectve", 0);
10040                 for (guint i = 0; i < acfg->globals->len; ++i) {
10041                         name = (char *)g_ptr_array_index (acfg->globals, i);
10042                         g_assert (name != NULL);
10043                         sprintf_s (symbol, MAX_SYMBOL_SIZE, " /EXPORT:%s", name);
10044                         emit_string (acfg, symbol);
10045                 }
10046
10047                 // Emit DLLMain function, needed by MSVC linker for DLL's.
10048                 // NOTE, DllMain should not go into exports above.
10049                 emit_section_change (acfg, ".text", 0);
10050                 emit_global (acfg, DLL_ENTRY_POINT, TRUE);
10051                 emit_label (acfg, DLL_ENTRY_POINT);
10052
10053                 // Simple implementation of DLLMain, just returning TRUE.
10054                 // For more information about DLLMain: https://msdn.microsoft.com/en-us/library/windows/desktop/ms682583(v=vs.85).aspx
10055                 fprintf (acfg->fp, "movl $1, %%eax\n");
10056                 fprintf (acfg->fp, "ret\n");
10057
10058                 // Inform linker about our dll entry function.
10059                 emit_section_change (acfg, ".drectve", 0);
10060                 emit_string (acfg, "/ENTRY:" DLL_ENTRY_POINT);
10061                 return;
10062         }
10063 }
10064
10065 #else
10066
10067 static inline void
10068 emit_library_info (MonoAotCompile *acfg)
10069 {
10070         return;
10071 }
10072 #endif
10073
10074 static void
10075 emit_globals (MonoAotCompile *acfg)
10076 {
10077         int i, table_size;
10078         guint32 hash;
10079         GPtrArray *table;
10080         char symbol [1024];
10081         GlobalsTableEntry *entry, *new_entry;
10082
10083         if (!acfg->aot_opts.static_link)
10084                 return;
10085
10086         if (acfg->aot_opts.llvm_only) {
10087                 g_assert (acfg->globals->len == 0);
10088                 return;
10089         }
10090
10091         /*
10092          * When static linking, we emit a table containing our globals.
10093          */
10094
10095         /*
10096          * Construct a chained hash table for mapping global names to their index in
10097          * the globals table.
10098          */
10099         table_size = g_spaced_primes_closest ((int)(acfg->globals->len * 1.5));
10100         table = g_ptr_array_sized_new (table_size);
10101         for (i = 0; i < table_size; ++i)
10102                 g_ptr_array_add (table, NULL);
10103         for (i = 0; i < acfg->globals->len; ++i) {
10104                 char *name = (char *)g_ptr_array_index (acfg->globals, i);
10105
10106                 hash = mono_metadata_str_hash (name) % table_size;
10107
10108                 /* FIXME: Allocate from the mempool */
10109                 new_entry = g_new0 (GlobalsTableEntry, 1);
10110                 new_entry->value = i;
10111
10112                 entry = (GlobalsTableEntry *)g_ptr_array_index (table, hash);
10113                 if (entry == NULL) {
10114                         new_entry->index = hash;
10115                         g_ptr_array_index (table, hash) = new_entry;
10116                 } else {
10117                         while (entry->next)
10118                                 entry = entry->next;
10119
10120                         entry->next = new_entry;
10121                         new_entry->index = table->len;
10122                         g_ptr_array_add (table, new_entry);
10123                 }
10124         }
10125
10126         /* Emit the table */
10127         sprintf (symbol, ".Lglobals_hash");
10128         emit_section_change (acfg, RODATA_SECT, 0);
10129         emit_alignment (acfg, 8);
10130         emit_label (acfg, symbol);
10131
10132         /* FIXME: Optimize memory usage */
10133         g_assert (table_size < 65000);
10134         emit_int16 (acfg, table_size);
10135         for (i = 0; i < table->len; ++i) {
10136                 GlobalsTableEntry *entry = (GlobalsTableEntry *)g_ptr_array_index (table, i);
10137
10138                 if (entry == NULL) {
10139                         emit_int16 (acfg, 0);
10140                         emit_int16 (acfg, 0);
10141                 } else {
10142                         emit_int16 (acfg, entry->value + 1);
10143                         if (entry->next)
10144                                 emit_int16 (acfg, entry->next->index);
10145                         else
10146                                 emit_int16 (acfg, 0);
10147                 }
10148         }
10149
10150         /* Emit the names */
10151         for (i = 0; i < acfg->globals->len; ++i) {
10152                 char *name = (char *)g_ptr_array_index (acfg->globals, i);
10153
10154                 sprintf (symbol, "name_%d", i);
10155                 emit_section_change (acfg, RODATA_SECT, 1);
10156 #ifdef TARGET_MACH
10157                 emit_alignment (acfg, 4);
10158 #endif
10159                 emit_label (acfg, symbol);
10160                 emit_string (acfg, name);
10161         }
10162
10163         /* Emit the globals table */
10164         sprintf (symbol, "globals");
10165         emit_section_change (acfg, ".data", 0);
10166         /* This is not a global, since it is accessed by the init function */
10167         emit_alignment (acfg, 8);
10168         emit_info_symbol (acfg, symbol);
10169
10170         sprintf (symbol, "%sglobals_hash", acfg->temp_prefix);
10171         emit_pointer (acfg, symbol);
10172
10173         for (i = 0; i < acfg->globals->len; ++i) {
10174                 char *name = (char *)g_ptr_array_index (acfg->globals, i);
10175
10176                 sprintf (symbol, "name_%d", i);
10177                 emit_pointer (acfg, symbol);
10178
10179                 g_assert (strlen (name) < sizeof (symbol));
10180                 sprintf (symbol, "%s", name);
10181                 emit_pointer (acfg, symbol);
10182         }
10183         /* Null terminate the table */
10184         emit_int32 (acfg, 0);
10185         emit_int32 (acfg, 0);
10186 }
10187
10188 static void
10189 emit_mem_end (MonoAotCompile *acfg)
10190 {
10191         char symbol [128];
10192
10193         if (acfg->aot_opts.llvm_only)
10194                 return;
10195
10196         sprintf (symbol, "mem_end");
10197         emit_section_change (acfg, ".text", 1);
10198         emit_alignment_code (acfg, 8);
10199         emit_label (acfg, symbol);
10200 }
10201
10202 static void
10203 init_aot_file_info (MonoAotCompile *acfg, MonoAotFileInfo *info)
10204 {
10205         int i;
10206
10207         info->version = MONO_AOT_FILE_VERSION;
10208         info->plt_got_offset_base = acfg->plt_got_offset_base;
10209         info->got_size = acfg->got_offset * sizeof (gpointer);
10210         info->plt_size = acfg->plt_offset;
10211         info->nmethods = acfg->nmethods;
10212         info->flags = acfg->flags;
10213         info->opts = acfg->opts;
10214         info->simd_opts = acfg->simd_opts;
10215         info->gc_name_index = acfg->gc_name_offset;
10216         info->datafile_size = acfg->datafile_offset;
10217         for (i = 0; i < MONO_AOT_TABLE_NUM; ++i)
10218                 info->table_offsets [i] = acfg->table_offsets [i];
10219         for (i = 0; i < MONO_AOT_TRAMP_NUM; ++i)
10220                 info->num_trampolines [i] = acfg->num_trampolines [i];
10221         for (i = 0; i < MONO_AOT_TRAMP_NUM; ++i)
10222                 info->trampoline_got_offset_base [i] = acfg->trampoline_got_offset_base [i];
10223         for (i = 0; i < MONO_AOT_TRAMP_NUM; ++i)
10224                 info->trampoline_size [i] = acfg->trampoline_size [i];
10225         info->num_rgctx_fetch_trampolines = acfg->aot_opts.nrgctx_fetch_trampolines;
10226
10227         info->double_align = MONO_ABI_ALIGNOF (double);
10228         info->long_align = MONO_ABI_ALIGNOF (gint64);
10229         info->generic_tramp_num = MONO_TRAMPOLINE_NUM;
10230         info->tramp_page_size = acfg->tramp_page_size;
10231         info->nshared_got_entries = acfg->nshared_got_entries;
10232         for (i = 0; i < MONO_AOT_TRAMP_NUM; ++i)
10233                 info->tramp_page_code_offsets [i] = acfg->tramp_page_code_offsets [i];
10234
10235         memcpy(&info->aotid, acfg->image->aotid, 16);
10236 }
10237
10238 static void
10239 emit_aot_file_info (MonoAotCompile *acfg, MonoAotFileInfo *info)
10240 {
10241         char symbol [MAX_SYMBOL_SIZE];
10242         int i, sindex;
10243         const char **symbols;
10244
10245         symbols = g_new0 (const char *, MONO_AOT_FILE_INFO_NUM_SYMBOLS);
10246         sindex = 0;
10247         symbols [sindex ++] = acfg->got_symbol;
10248         if (acfg->llvm) {
10249                 symbols [sindex ++] = g_strdup_printf ("%s%s", acfg->user_symbol_prefix, acfg->llvm_got_symbol);
10250                 symbols [sindex ++] = acfg->llvm_eh_frame_symbol;
10251         } else {
10252                 symbols [sindex ++] = NULL;
10253                 symbols [sindex ++] = NULL;
10254         }
10255         /* llvm_get_method */
10256         symbols [sindex ++] = NULL;
10257         /* llvm_get_unbox_tramp */
10258         symbols [sindex ++] = NULL;
10259         if (!acfg->aot_opts.llvm_only) {
10260                 symbols [sindex ++] = "jit_code_start";
10261                 symbols [sindex ++] = "jit_code_end";
10262                 symbols [sindex ++] = "method_addresses";
10263         } else {
10264                 symbols [sindex ++] = NULL;
10265                 symbols [sindex ++] = NULL;
10266                 symbols [sindex ++] = NULL;
10267         }
10268
10269         if (acfg->data_outfile) {
10270                 for (i = 0; i < MONO_AOT_TABLE_NUM; ++i)
10271                         symbols [sindex ++] = NULL;
10272         } else {
10273                 symbols [sindex ++] = "blob";
10274                 symbols [sindex ++] = "class_name_table";
10275                 symbols [sindex ++] = "class_info_offsets";
10276                 symbols [sindex ++] = "method_info_offsets";
10277                 symbols [sindex ++] = "ex_info_offsets";
10278                 symbols [sindex ++] = "extra_method_info_offsets";
10279                 symbols [sindex ++] = "extra_method_table";
10280                 symbols [sindex ++] = "got_info_offsets";
10281                 if (acfg->llvm)
10282                         symbols [sindex ++] = "llvm_got_info_offsets";
10283                 else
10284                         symbols [sindex ++] = NULL;
10285                 symbols [sindex ++] = "image_table";
10286                 symbols [sindex ++] = "weak_field_indexes";
10287         }
10288
10289         symbols [sindex ++] = "mem_end";
10290         symbols [sindex ++] = "assembly_guid";
10291         symbols [sindex ++] = "runtime_version";
10292         if (acfg->num_trampoline_got_entries) {
10293                 symbols [sindex ++] = "specific_trampolines";
10294                 symbols [sindex ++] = "static_rgctx_trampolines";
10295                 symbols [sindex ++] = "imt_trampolines";
10296                 symbols [sindex ++] = "gsharedvt_arg_trampolines";
10297         } else {
10298                 symbols [sindex ++] = NULL;
10299                 symbols [sindex ++] = NULL;
10300                 symbols [sindex ++] = NULL;
10301                 symbols [sindex ++] = NULL;
10302         }
10303         if (acfg->aot_opts.static_link) {
10304                 symbols [sindex ++] = "globals";
10305         } else {
10306                 symbols [sindex ++] = NULL;
10307         }
10308         symbols [sindex ++] = "assembly_name";
10309         symbols [sindex ++] = "plt";
10310         symbols [sindex ++] = "plt_end";
10311         symbols [sindex ++] = "unwind_info";
10312         if (!acfg->aot_opts.llvm_only) {
10313                 symbols [sindex ++] = "unbox_trampolines";
10314                 symbols [sindex ++] = "unbox_trampolines_end";
10315                 symbols [sindex ++] = "unbox_trampoline_addresses";
10316         } else {
10317                 symbols [sindex ++] = NULL;
10318                 symbols [sindex ++] = NULL;
10319                 symbols [sindex ++] = NULL;
10320         }
10321
10322         g_assert (sindex == MONO_AOT_FILE_INFO_NUM_SYMBOLS);
10323
10324         sprintf (symbol, "%smono_aot_file_info", acfg->user_symbol_prefix);
10325         emit_section_change (acfg, ".data", 0);
10326         emit_alignment (acfg, 8);
10327         emit_label (acfg, symbol);
10328         if (!acfg->aot_opts.static_link)
10329                 emit_global (acfg, symbol, FALSE);
10330
10331         /* The data emitted here must match MonoAotFileInfo. */
10332
10333         emit_int32 (acfg, info->version);
10334         emit_int32 (acfg, info->dummy);
10335
10336         /*
10337          * We emit pointers to our data structures instead of emitting global symbols which
10338          * point to them, to reduce the number of globals, and because using globals leads to
10339          * various problems (i.e. arm/thumb).
10340          */
10341         for (i = 0; i < MONO_AOT_FILE_INFO_NUM_SYMBOLS; ++i)
10342                 emit_pointer (acfg, symbols [i]);
10343
10344         emit_int32 (acfg, info->plt_got_offset_base);
10345         emit_int32 (acfg, info->got_size);
10346         emit_int32 (acfg, info->plt_size);
10347         emit_int32 (acfg, info->nmethods);
10348         emit_int32 (acfg, info->flags);
10349         emit_int32 (acfg, info->opts);
10350         emit_int32 (acfg, info->simd_opts);
10351         emit_int32 (acfg, info->gc_name_index);
10352         emit_int32 (acfg, info->num_rgctx_fetch_trampolines);
10353         emit_int32 (acfg, info->double_align);
10354         emit_int32 (acfg, info->long_align);
10355         emit_int32 (acfg, info->generic_tramp_num);
10356         emit_int32 (acfg, info->tramp_page_size);
10357         emit_int32 (acfg, info->nshared_got_entries);
10358         emit_int32 (acfg, info->datafile_size);
10359
10360         for (i = 0; i < MONO_AOT_TABLE_NUM; ++i)
10361                 emit_int32 (acfg, info->table_offsets [i]);
10362         for (i = 0; i < MONO_AOT_TRAMP_NUM; ++i)
10363                 emit_int32 (acfg, info->num_trampolines [i]);
10364         for (i = 0; i < MONO_AOT_TRAMP_NUM; ++i)
10365                 emit_int32 (acfg, info->trampoline_got_offset_base [i]);
10366         for (i = 0; i < MONO_AOT_TRAMP_NUM; ++i)
10367                 emit_int32 (acfg, info->trampoline_size [i]);
10368         for (i = 0; i < MONO_AOT_TRAMP_NUM; ++i)
10369                 emit_int32 (acfg, info->tramp_page_code_offsets [i]);
10370
10371         emit_bytes (acfg, info->aotid, 16);
10372
10373         if (acfg->aot_opts.static_link) {
10374                 emit_global_inner (acfg, acfg->static_linking_symbol, FALSE);
10375                 emit_alignment (acfg, sizeof (gpointer));
10376                 emit_label (acfg, acfg->static_linking_symbol);
10377                 emit_pointer_2 (acfg, acfg->user_symbol_prefix, "mono_aot_file_info");
10378         }
10379 }
10380
10381 /*
10382  * Emit a structure containing all the information not stored elsewhere.
10383  */
10384 static void
10385 emit_file_info (MonoAotCompile *acfg)
10386 {
10387         char *build_info;
10388         MonoAotFileInfo *info;
10389
10390         if (acfg->aot_opts.bind_to_runtime_version) {
10391                 build_info = mono_get_runtime_build_info ();
10392                 emit_string_symbol (acfg, "runtime_version", build_info);
10393                 g_free (build_info);
10394         } else {
10395                 emit_string_symbol (acfg, "runtime_version", "");
10396         }
10397
10398         emit_string_symbol (acfg, "assembly_guid" , acfg->image->guid);
10399
10400         /* Emit a string holding the assembly name */
10401         emit_string_symbol (acfg, "assembly_name", acfg->image->assembly->aname.name);
10402
10403         info = g_new0 (MonoAotFileInfo, 1);
10404         init_aot_file_info (acfg, info);
10405
10406         if (acfg->aot_opts.static_link) {
10407                 char symbol [MAX_SYMBOL_SIZE];
10408                 char *p;
10409
10410                 /*
10411                  * Emit a global symbol which can be passed by an embedding app to
10412                  * mono_aot_register_module (). The symbol points to a pointer to the the file info
10413                  * structure.
10414                  */
10415                 sprintf (symbol, "%smono_aot_module_%s_info", acfg->user_symbol_prefix, acfg->image->assembly->aname.name);
10416
10417                 /* Get rid of characters which cannot occur in symbols */
10418                 p = symbol;
10419                 for (p = symbol; *p; ++p) {
10420                         if (!(isalnum (*p) || *p == '_'))
10421                                 *p = '_';
10422                 }
10423                 acfg->static_linking_symbol = g_strdup (symbol);
10424         }
10425
10426         if (acfg->llvm)
10427                 mono_llvm_emit_aot_file_info (info, acfg->has_jitted_code);
10428         else
10429                 emit_aot_file_info (acfg, info);
10430 }
10431
10432 static void
10433 emit_blob (MonoAotCompile *acfg)
10434 {
10435         acfg->blob_closed = TRUE;
10436
10437         emit_aot_data (acfg, MONO_AOT_TABLE_BLOB, "blob", (guint8*)acfg->blob.data, acfg->blob.index);
10438 }
10439
10440 static void
10441 emit_objc_selectors (MonoAotCompile *acfg)
10442 {
10443         int i;
10444         char symbol [128];
10445
10446         if (!acfg->objc_selectors || acfg->objc_selectors->len == 0)
10447                 return;
10448
10449         /*
10450          * From
10451          * cat > foo.m << EOF
10452          * void *ret ()
10453          * {
10454          * return @selector(print:);
10455          * }
10456          * EOF
10457          */
10458
10459         mono_img_writer_emit_unset_mode (acfg->w);
10460         g_assert (acfg->fp);
10461         fprintf (acfg->fp, ".section    __DATA,__objc_selrefs,literal_pointers,no_dead_strip\n");
10462         fprintf (acfg->fp, ".align      3\n");
10463         for (i = 0; i < acfg->objc_selectors->len; ++i) {
10464                 sprintf (symbol, "L_OBJC_SELECTOR_REFERENCES_%d", i);
10465                 emit_label (acfg, symbol);
10466                 sprintf (symbol, "L_OBJC_METH_VAR_NAME_%d", i);
10467                 emit_pointer (acfg, symbol);
10468
10469         }
10470         fprintf (acfg->fp, ".section    __TEXT,__cstring,cstring_literals\n");
10471         for (i = 0; i < acfg->objc_selectors->len; ++i) {
10472                 fprintf (acfg->fp, "L_OBJC_METH_VAR_NAME_%d:\n", i);
10473                 fprintf (acfg->fp, ".asciz \"%s\"\n", (char*)g_ptr_array_index (acfg->objc_selectors, i));
10474         }
10475
10476         fprintf (acfg->fp, ".section    __DATA,__objc_imageinfo,regular,no_dead_strip\n");
10477         fprintf (acfg->fp, ".align      3\n");
10478         fprintf (acfg->fp, "L_OBJC_IMAGE_INFO:\n");
10479         fprintf (acfg->fp, ".long       0\n");
10480         fprintf (acfg->fp, ".long       16\n");
10481 }
10482
10483 static void
10484 emit_dwarf_info (MonoAotCompile *acfg)
10485 {
10486 #ifdef EMIT_DWARF_INFO
10487         int i;
10488         char symbol2 [128];
10489
10490         /* DIEs for methods */
10491         for (i = 0; i < acfg->nmethods; ++i) {
10492                 MonoCompile *cfg = acfg->cfgs [i];
10493
10494                 if (ignore_cfg (cfg))
10495                         continue;
10496
10497                 // FIXME: LLVM doesn't define .Lme_...
10498                 if (cfg->compile_llvm)
10499                         continue;
10500
10501                 sprintf (symbol2, "%sme_%x", acfg->temp_prefix, i);
10502
10503                 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 ()));
10504         }
10505 #endif
10506 }
10507
10508 #ifdef EMIT_WIN32_CODEVIEW_INFO
10509 typedef struct _CodeViewSubSectionData
10510 {
10511         gchar *start_section;
10512         gchar *end_section;
10513         gchar *start_section_record;
10514         gchar *end_section_record;
10515         int section_type;
10516         int section_record_type;
10517         int section_id;
10518 } CodeViewSubsectionData;
10519
10520 typedef struct _CodeViewCompilerVersion
10521 {
10522         gint major;
10523         gint minor;
10524         gint revision;
10525         gint patch;
10526 } CodeViewCompilerVersion;
10527
10528 #define CODEVIEW_SUBSECTION_SYMBOL_TYPE 0xF1
10529 #define CODEVIEW_SUBSECTION_RECORD_COMPILER_TYPE 0x113c
10530 #define CODEVIEW_SUBSECTION_RECORD_FUNCTION_START_TYPE 0x1147
10531 #define CODEVIEW_SUBSECTION_RECORD_FUNCTION_END_TYPE 0x114F
10532 #define CODEVIEW_CSHARP_LANGUAGE_TYPE 0x0A
10533 #define CODEVIEW_CPU_TYPE 0x0
10534 #define CODEVIEW_MAGIC_HEADER 0x4
10535
10536 static void
10537 codeview_clear_subsection_data (CodeViewSubsectionData *section_data)
10538 {
10539         g_free (section_data->start_section);
10540         g_free (section_data->end_section);
10541         g_free (section_data->start_section_record);
10542         g_free (section_data->end_section_record);
10543
10544         memset (section_data, 0, sizeof (CodeViewSubsectionData));
10545 }
10546
10547 static void
10548 codeview_parse_compiler_version (gchar *version, CodeViewCompilerVersion *data)
10549 {
10550         gint values[4] = { 0 };
10551         gint *value = values;
10552
10553         while (*version && (value < values + G_N_ELEMENTS (values))) {
10554                 if (isdigit (*version)) {
10555                         *value *= 10;
10556                         *value += *version - '0';
10557                 }
10558                 else if (*version == '.') {
10559                         value++;
10560                 }
10561
10562                 version++;
10563         }
10564
10565         data->major = values[0];
10566         data->minor = values[1];
10567         data->revision = values[2];
10568         data->patch = values[3];
10569 }
10570
10571 static void
10572 emit_codeview_start_subsection (MonoAotCompile *acfg, int section_id, int section_type, int section_record_type, CodeViewSubsectionData *section_data)
10573 {
10574         // Starting a new subsection, clear old data.
10575         codeview_clear_subsection_data (section_data);
10576
10577         // Keep subsection data.
10578         section_data->section_id = section_id;
10579         section_data->section_type = section_type;
10580         section_data->section_record_type = section_record_type;
10581
10582         // Allocate all labels used in subsection.
10583         section_data->start_section = g_strdup_printf ("%scvs_%d", acfg->temp_prefix, section_data->section_id);
10584         section_data->end_section = g_strdup_printf ("%scvse_%d", acfg->temp_prefix, section_data->section_id);
10585         section_data->start_section_record = g_strdup_printf ("%scvsr_%d", acfg->temp_prefix, section_data->section_id);
10586         section_data->end_section_record = g_strdup_printf ("%scvsre_%d", acfg->temp_prefix, section_data->section_id);
10587
10588         // Subsection type, function symbol.
10589         emit_int32 (acfg, section_data->section_type);
10590
10591         // Subsection size.
10592         emit_symbol_diff (acfg, section_data->end_section, section_data->start_section, 0);
10593         emit_label (acfg, section_data->start_section);
10594
10595         // Subsection record size.
10596         fprintf (acfg->fp, "\t.word %s - %s\n", section_data->end_section_record, section_data->start_section_record);
10597         emit_label (acfg, section_data->start_section_record);
10598
10599         // Subsection record type.
10600         emit_int16 (acfg, section_record_type);
10601 }
10602
10603 static void
10604 emit_codeview_end_subsection (MonoAotCompile *acfg, CodeViewSubsectionData *section_data, int *section_id)
10605 {
10606         g_assert (section_data->start_section);
10607         g_assert (section_data->end_section);
10608         g_assert (section_data->start_section_record);
10609         g_assert (section_data->end_section_record);
10610
10611         emit_label (acfg, section_data->end_section_record);
10612
10613         if (section_data->section_record_type == CODEVIEW_SUBSECTION_RECORD_FUNCTION_START_TYPE) {
10614                 // Emit record length.
10615                 emit_int16 (acfg, 2);
10616
10617                 // Emit specific record type end.
10618                 emit_int16 (acfg, CODEVIEW_SUBSECTION_RECORD_FUNCTION_END_TYPE);
10619         }
10620
10621         emit_label (acfg, section_data->end_section);
10622
10623         // Next subsection needs to be 4 byte aligned.
10624         emit_alignment (acfg, 4);
10625
10626         *section_id = section_data->section_id + 1;
10627         codeview_clear_subsection_data (section_data);
10628 }
10629
10630 inline static void
10631 emit_codeview_start_symbol_subsection (MonoAotCompile *acfg, int section_id, int section_record_type, CodeViewSubsectionData *section_data)
10632 {
10633         emit_codeview_start_subsection (acfg, section_id, CODEVIEW_SUBSECTION_SYMBOL_TYPE, section_record_type, section_data);
10634 }
10635
10636 inline static void
10637 emit_codeview_end_symbol_subsection (MonoAotCompile *acfg, CodeViewSubsectionData *section_data, int *section_id)
10638 {
10639         emit_codeview_end_subsection (acfg, section_data, section_id);
10640 }
10641
10642 static void
10643 emit_codeview_compiler_info (MonoAotCompile *acfg, int *section_id)
10644 {
10645         CodeViewSubsectionData section_data = { 0 };
10646         CodeViewCompilerVersion compiler_version = { 0 };
10647
10648         // Start new compiler record subsection.
10649         emit_codeview_start_symbol_subsection (acfg, *section_id, CODEVIEW_SUBSECTION_RECORD_COMPILER_TYPE, &section_data);
10650
10651         emit_int32 (acfg, CODEVIEW_CSHARP_LANGUAGE_TYPE);
10652         emit_int16 (acfg, CODEVIEW_CPU_TYPE);
10653
10654         // Get compiler version information.
10655         codeview_parse_compiler_version (VERSION, &compiler_version);
10656
10657         // Compiler frontend version, 4 digits.
10658         emit_int16 (acfg, compiler_version.major);
10659         emit_int16 (acfg, compiler_version.minor);
10660         emit_int16 (acfg, compiler_version.revision);
10661         emit_int16 (acfg, compiler_version.patch);
10662
10663         // Compiler backend version, 4 digits (currently same as frontend).
10664         emit_int16 (acfg, compiler_version.major);
10665         emit_int16 (acfg, compiler_version.minor);
10666         emit_int16 (acfg, compiler_version.revision);
10667         emit_int16 (acfg, compiler_version.patch);
10668
10669         // Compiler string.
10670         emit_string (acfg, "Mono AOT compiler");
10671
10672         // Done with section.
10673         emit_codeview_end_symbol_subsection (acfg, &section_data, section_id);
10674 }
10675
10676 static void
10677 emit_codeview_function_info (MonoAotCompile *acfg, MonoMethod *method, int *section_id, gchar *symbol, gchar *symbol_start, gchar *symbol_end)
10678 {
10679         CodeViewSubsectionData section_data = { 0 };
10680         gchar *full_method_name = NULL;
10681
10682         // Start new function record subsection.
10683         emit_codeview_start_symbol_subsection (acfg, *section_id, CODEVIEW_SUBSECTION_RECORD_FUNCTION_START_TYPE, &section_data);
10684
10685         // Emit 3 int 0 byte padding, currently not used.
10686         emit_zero_bytes (acfg, sizeof (int) * 3);
10687
10688         // Emit size of function.
10689         emit_symbol_diff (acfg, symbol_end, symbol_start, 0);
10690
10691         // Emit 3 int 0 byte padding, currently not used.
10692         emit_zero_bytes (acfg, sizeof (int) * 3);
10693
10694         // Emit reallocation info.
10695         fprintf (acfg->fp, "\t.secrel32 %s\n", symbol);
10696         fprintf (acfg->fp, "\t.secidx %s\n", symbol);
10697
10698         // Emit flag, currently not used.
10699         emit_zero_bytes (acfg, 1);
10700
10701         // Emit function name, exclude signature since it should be described by own metadata.
10702         full_method_name = mono_method_full_name (method, FALSE);
10703         emit_string (acfg, full_method_name ? full_method_name : "");
10704         g_free (full_method_name);
10705
10706         // Done with section.
10707         emit_codeview_end_symbol_subsection (acfg, &section_data, section_id);
10708 }
10709
10710 static void
10711 emit_codeview_info (MonoAotCompile *acfg)
10712 {
10713         int i;
10714         int section_id = 0;
10715         gchar symbol_buffer[MAX_SYMBOL_SIZE];
10716
10717         // Emit codeview debug info section
10718         emit_section_change (acfg, ".debug$S", 0);
10719
10720         // Emit magic header.
10721         emit_int32 (acfg, CODEVIEW_MAGIC_HEADER);
10722
10723         emit_codeview_compiler_info (acfg, &section_id);
10724
10725         for (i = 0; i < acfg->nmethods; ++i) {
10726                 MonoCompile *cfg = acfg->cfgs[i];
10727
10728                 if (!cfg)
10729                         continue;
10730
10731                 int ret = g_snprintf (symbol_buffer, G_N_ELEMENTS (symbol_buffer), "%sme_%x", acfg->temp_prefix, i);
10732                 if (ret > 0 && ret < G_N_ELEMENTS (symbol_buffer))
10733                         emit_codeview_function_info (acfg, cfg->method, &section_id, cfg->asm_debug_symbol, cfg->asm_symbol, symbol_buffer);
10734         }
10735 }
10736 #else
10737 static void
10738 emit_codeview_info (MonoAotCompile *acfg)
10739 {
10740 }
10741 #endif /* EMIT_WIN32_CODEVIEW_INFO */
10742
10743 #ifdef EMIT_WIN32_UNWIND_INFO
10744 static UnwindInfoSectionCacheItem *
10745 get_cached_unwind_info_section_item_win32 (MonoAotCompile *acfg, const char *function_start, const char *function_end, GSList *unwind_ops)
10746 {
10747         UnwindInfoSectionCacheItem *item = NULL;
10748
10749         if (!acfg->unwind_info_section_cache)
10750                 acfg->unwind_info_section_cache = g_list_alloc ();
10751
10752         PUNWIND_INFO unwind_info = mono_arch_unwindinfo_alloc_unwind_info (unwind_ops);
10753
10754         // Search for unwind info in cache.
10755         GList *list = acfg->unwind_info_section_cache;
10756         int list_size = 0;
10757         while (list && list->data) {
10758                 item = (UnwindInfoSectionCacheItem*)list->data;
10759                 if (!memcmp (unwind_info, item->unwind_info, sizeof (UNWIND_INFO))) {
10760                         // Cache hit, return cached item.
10761                         return item;
10762                 }
10763                 list = list->next;
10764                 list_size++;
10765         }
10766
10767         // Add to cache.
10768         if (acfg->unwind_info_section_cache) {
10769                 item = g_new0 (UnwindInfoSectionCacheItem, 1);
10770                 if (item) {
10771                         // Format .xdata section label for function, used to get unwind info address RVA.
10772                         // Since the unwind info is similar for most functions, the symbol will be reused.
10773                         item->xdata_section_label = g_strdup_printf ("%sunwind_%d", acfg->temp_prefix, list_size);
10774
10775                         // Cache unwind info data, used when checking cache for matching unwind info. NOTE, cache takes
10776                         //over ownership of unwind info.
10777                         item->unwind_info = unwind_info;
10778
10779                         // Needs to be emitted once.
10780                         item->xdata_section_emitted = FALSE;
10781
10782                         // Prepend to beginning of list to speed up inserts.
10783                         acfg->unwind_info_section_cache = g_list_prepend (acfg->unwind_info_section_cache, (gpointer)item);
10784                 }
10785         }
10786
10787         return item;
10788 }
10789
10790 static void
10791 free_unwind_info_section_cache_win32 (MonoAotCompile *acfg)
10792 {
10793         GList *list = acfg->unwind_info_section_cache;
10794
10795         while (list) {
10796                 UnwindInfoSectionCacheItem *item = (UnwindInfoSectionCacheItem *)list->data;
10797                 if (item) {
10798                         g_free (item->xdata_section_label);
10799                         mono_arch_unwindinfo_free_unwind_info (item->unwind_info);
10800
10801                         g_free (item);
10802                         list->data = NULL;
10803                 }
10804
10805                 list = list->next;
10806         }
10807
10808         g_list_free (acfg->unwind_info_section_cache);
10809         acfg->unwind_info_section_cache = NULL;
10810 }
10811
10812 static void
10813 emit_unwind_info_data_win32 (MonoAotCompile *acfg, PUNWIND_INFO unwind_info)
10814 {
10815         // Emit the unwind info struct.
10816         emit_bytes (acfg, (guint8*)unwind_info, sizeof (UNWIND_INFO) - (sizeof (UNWIND_CODE) * MONO_MAX_UNWIND_CODES));
10817
10818         // Emit all unwind codes encoded in unwind info struct.
10819         PUNWIND_CODE current_unwind_node = &unwind_info->UnwindCode[MONO_MAX_UNWIND_CODES - unwind_info->CountOfCodes];
10820         PUNWIND_CODE last_unwind_node = &unwind_info->UnwindCode[MONO_MAX_UNWIND_CODES];
10821
10822         while (current_unwind_node < last_unwind_node) {
10823                 guint8 node_count = 0;
10824                 switch (current_unwind_node->UnwindOp) {
10825                 case UWOP_PUSH_NONVOL:
10826                 case UWOP_ALLOC_SMALL:
10827                 case UWOP_SET_FPREG:
10828                 case UWOP_PUSH_MACHFRAME:
10829                         node_count = 1;
10830                         break;
10831                 case UWOP_SAVE_NONVOL:
10832                 case UWOP_SAVE_XMM128:
10833                         node_count = 2;
10834                         break;
10835                 case UWOP_SAVE_NONVOL_FAR:
10836                 case UWOP_SAVE_XMM128_FAR:
10837                         node_count = 3;
10838                         break;
10839                 case UWOP_ALLOC_LARGE:
10840                         if (current_unwind_node->OpInfo == 0)
10841                                 node_count = 2;
10842                         else
10843                                 node_count = 3;
10844                         break;
10845                 default:
10846                         g_assert (!"Unknown unwind opcode.");
10847                 }
10848
10849                 while (node_count > 0) {
10850                         g_assert (current_unwind_node < last_unwind_node);
10851
10852                         //Emit current node.
10853                         emit_bytes (acfg, (guint8*)current_unwind_node, sizeof (UNWIND_CODE));
10854
10855                         node_count--;
10856                         current_unwind_node++;
10857                 }
10858         }
10859 }
10860
10861 // Emit unwind info sections for each function. Unwind info on Windows x64 is emitted into two different sections.
10862 // .pdata includes the serialized DWORD aligned RVA's of function start, end and address of serialized
10863 // UNWIND_INFO struct emitted into .xdata, see https://msdn.microsoft.com/en-us/library/ft9x1kdx.aspx.
10864 // .xdata section includes DWORD aligned serialized version of UNWIND_INFO struct, https://msdn.microsoft.com/en-us/library/ddssxxy8.aspx.
10865 static void
10866 emit_unwind_info_sections_win32 (MonoAotCompile *acfg, const char *function_start, const char *function_end, GSList *unwind_ops)
10867 {
10868         char *pdata_section_label = NULL;
10869
10870         int temp_prefix_len = (acfg->temp_prefix != NULL) ? strlen (acfg->temp_prefix) : 0;
10871         if (strncmp (function_start, acfg->temp_prefix, temp_prefix_len)) {
10872                 temp_prefix_len = 0;
10873         }
10874
10875         // Format .pdata section label for function.
10876         pdata_section_label = g_strdup_printf ("%spdata_%s", acfg->temp_prefix, function_start + temp_prefix_len);
10877
10878         UnwindInfoSectionCacheItem *cache_item = get_cached_unwind_info_section_item_win32 (acfg, function_start, function_end, unwind_ops);
10879         g_assert (cache_item && cache_item->xdata_section_label && cache_item->unwind_info);
10880
10881         // Emit .pdata section.
10882         emit_section_change (acfg, ".pdata", 0);
10883         emit_alignment (acfg, sizeof (DWORD));
10884         emit_label (acfg, pdata_section_label);
10885
10886         // Emit function start address RVA.
10887         fprintf (acfg->fp, "\t.long %s@IMGREL\n", function_start);
10888
10889         // Emit function end address RVA.
10890         fprintf (acfg->fp, "\t.long %s@IMGREL\n", function_end);
10891
10892         // Emit unwind info address RVA.
10893         fprintf (acfg->fp, "\t.long %s@IMGREL\n", cache_item->xdata_section_label);
10894
10895         if (!cache_item->xdata_section_emitted) {
10896                 // Emit .xdata section.
10897                 emit_section_change (acfg, ".xdata", 0);
10898                 emit_alignment (acfg, sizeof (DWORD));
10899                 emit_label (acfg, cache_item->xdata_section_label);
10900
10901                 // Emit unwind info into .xdata section.
10902                 emit_unwind_info_data_win32 (acfg, cache_item->unwind_info);
10903                 cache_item->xdata_section_emitted = TRUE;
10904         }
10905
10906         g_free (pdata_section_label);
10907 }
10908 #endif
10909
10910 static gboolean
10911 collect_methods (MonoAotCompile *acfg)
10912 {
10913         int mindex, i;
10914         MonoImage *image = acfg->image;
10915
10916         /* Collect methods */
10917         for (i = 0; i < image->tables [MONO_TABLE_METHOD].rows; ++i) {
10918                 ERROR_DECL (error);
10919                 MonoMethod *method;
10920                 guint32 token = MONO_TOKEN_METHOD_DEF | (i + 1);
10921
10922                 method = mono_get_method_checked (acfg->image, token, NULL, NULL, error);
10923
10924                 if (!method) {
10925                         aot_printerrf (acfg, "Failed to load method 0x%x from '%s' due to %s.\n", token, image->name, mono_error_get_message (error));
10926                         aot_printerrf (acfg, "Run with MONO_LOG_LEVEL=debug for more information.\n");
10927                         mono_error_cleanup (error);
10928                         return FALSE;
10929                 }
10930
10931                 /* Load all methods eagerly to skip the slower lazy loading code */
10932                 mono_class_setup_methods (method->klass);
10933
10934                 if (mono_aot_mode_is_full (&acfg->aot_opts) && method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) {
10935                         /* Compile the wrapper instead */
10936                         /* We do this here instead of add_wrappers () because it is easy to do it here */
10937                         MonoMethod *wrapper = mono_marshal_get_native_wrapper (method, TRUE, TRUE);
10938                         method = wrapper;
10939                 }
10940
10941                 /* FIXME: Some mscorlib methods don't have debug info */
10942                 /*
10943                 if (acfg->aot_opts.soft_debug && !method->wrapper_type) {
10944                         if (!((method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
10945                                   (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
10946                                   (method->flags & METHOD_ATTRIBUTE_ABSTRACT) ||
10947                                   (method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL))) {
10948                                 if (!mono_debug_lookup_method (method)) {
10949                                         fprintf (stderr, "Method %s has no debug info, probably the .mdb file for the assembly is missing.\n", mono_method_get_full_name (method));
10950                                         exit (1);
10951                                 }
10952                         }
10953                 }
10954                 */
10955
10956                 if (method->is_generic || mono_class_is_gtd (method->klass))
10957                         /* Compile the ref shared version instead */
10958                         method = mini_get_shared_method (method);
10959
10960                 /* Since we add the normal methods first, their index will be equal to their zero based token index */
10961                 add_method_with_index (acfg, method, i, FALSE);
10962                 acfg->method_index ++;
10963         }
10964
10965         /* gsharedvt methods */
10966         for (mindex = 0; mindex < image->tables [MONO_TABLE_METHOD].rows; ++mindex) {
10967                 ERROR_DECL (error);
10968                 MonoMethod *method;
10969                 guint32 token = MONO_TOKEN_METHOD_DEF | (mindex + 1);
10970
10971                 if (!(acfg->opts & MONO_OPT_GSHAREDVT))
10972                         continue;
10973
10974                 method = mono_get_method_checked (acfg->image, token, NULL, NULL, error);
10975                 report_loader_error (acfg, error, TRUE, "Failed to load method token 0x%x due to %s\n", i, mono_error_get_message (error));
10976
10977                 if (method->is_generic || mono_class_is_gtd (method->klass)) {
10978                         MonoMethod *gshared;
10979
10980                         gshared = mini_get_shared_method_full (method, TRUE, TRUE);
10981                         add_extra_method (acfg, gshared);
10982                 }
10983         }
10984
10985         if (mono_aot_mode_is_full (&acfg->aot_opts) || mono_aot_mode_is_hybrid (&acfg->aot_opts))
10986                 add_generic_instances (acfg);
10987
10988         if (mono_aot_mode_is_full (&acfg->aot_opts))
10989                 add_wrappers (acfg);
10990         return TRUE;
10991 }
10992
10993 static void
10994 compile_methods (MonoAotCompile *acfg)
10995 {
10996         int i, methods_len;
10997
10998         if (acfg->aot_opts.nthreads > 0) {
10999                 GPtrArray *frag;
11000                 int len, j;
11001                 GPtrArray *threads;
11002                 MonoThreadHandle *thread_handle;
11003                 gpointer *user_data;
11004                 MonoMethod **methods;
11005
11006                 methods_len = acfg->methods->len;
11007
11008                 len = acfg->methods->len / acfg->aot_opts.nthreads;
11009                 g_assert (len > 0);
11010                 /*
11011                  * Partition the list of methods into fragments, and hand it to threads to
11012                  * process.
11013                  */
11014                 threads = g_ptr_array_new ();
11015                 /* Make a copy since acfg->methods is modified by compile_method () */
11016                 methods = g_new0 (MonoMethod*, methods_len);
11017                 //memcpy (methods, g_ptr_array_index (acfg->methods, 0), sizeof (MonoMethod*) * methods_len);
11018                 for (i = 0; i < methods_len; ++i)
11019                         methods [i] = (MonoMethod *)g_ptr_array_index (acfg->methods, i);
11020                 i = 0;
11021                 while (i < methods_len) {
11022                         ERROR_DECL (error);
11023                         MonoInternalThread *thread;
11024
11025                         frag = g_ptr_array_new ();
11026                         for (j = 0; j < len; ++j) {
11027                                 if (i < methods_len) {
11028                                         g_ptr_array_add (frag, methods [i]);
11029                                         i ++;
11030                                 }
11031                         }
11032
11033                         user_data = g_new0 (gpointer, 3);
11034                         user_data [0] = acfg;
11035                         user_data [1] = frag;
11036
11037                         thread = mono_thread_create_internal (mono_domain_get (), compile_thread_main, (gpointer) user_data, MONO_THREAD_CREATE_FLAGS_NONE, error);
11038                         mono_error_assert_ok (error);
11039
11040                         thread_handle = mono_threads_open_thread_handle (thread->handle);
11041                         g_ptr_array_add (threads, thread_handle);
11042                 }
11043                 g_free (methods);
11044
11045                 for (i = 0; i < threads->len; ++i) {
11046                         mono_thread_info_wait_one_handle (g_ptr_array_index (threads, i), MONO_INFINITE_WAIT, FALSE);
11047                         mono_threads_close_thread_handle (g_ptr_array_index (threads, i));
11048                 }
11049         } else {
11050                 methods_len = 0;
11051         }
11052
11053         /* Compile methods added by compile_method () or all methods if nthreads == 0 */
11054         for (i = methods_len; i < acfg->methods->len; ++i) {
11055                 /* This can add new methods to acfg->methods */
11056                 compile_method (acfg, (MonoMethod *)g_ptr_array_index (acfg->methods, i));
11057         }
11058 }
11059
11060 static int
11061 compile_asm (MonoAotCompile *acfg)
11062 {
11063         char *command, *objfile;
11064         char *outfile_name, *tmp_outfile_name, *llvm_ofile;
11065         const char *tool_prefix = acfg->aot_opts.tool_prefix ? acfg->aot_opts.tool_prefix : "";
11066         char *ld_flags = acfg->aot_opts.ld_flags ? acfg->aot_opts.ld_flags : g_strdup("");
11067
11068 #ifdef TARGET_WIN32_MSVC
11069 #define AS_OPTIONS "-c -x assembler"
11070 #elif defined(TARGET_AMD64) && !defined(TARGET_MACH)
11071 #define AS_OPTIONS "--64"
11072 #elif defined(TARGET_POWERPC64)
11073 #define AS_OPTIONS "-a64 -mppc64"
11074 #elif defined(sparc) && SIZEOF_VOID_P == 8
11075 #define AS_OPTIONS "-xarch=v9"
11076 #elif defined(TARGET_X86) && defined(TARGET_MACH)
11077 #define AS_OPTIONS "-arch i386"
11078 #else
11079 #define AS_OPTIONS ""
11080 #endif
11081
11082 #if defined(TARGET_OSX)
11083 #define AS_NAME "clang"
11084 #elif defined(TARGET_WIN32_MSVC)
11085 #define AS_NAME "clang.exe"
11086 #else
11087 #define AS_NAME "as"
11088 #endif
11089
11090 #ifdef TARGET_WIN32_MSVC
11091 #define AS_OBJECT_FILE_SUFFIX "obj"
11092 #else
11093 #define AS_OBJECT_FILE_SUFFIX "o"
11094 #endif
11095
11096 #if defined(sparc)
11097 #define LD_NAME "ld"
11098 #define LD_OPTIONS "-shared -G"
11099 #elif defined(__ppc__) && defined(TARGET_MACH)
11100 #define LD_NAME "gcc"
11101 #define LD_OPTIONS "-dynamiclib"
11102 #elif defined(TARGET_AMD64) && defined(TARGET_MACH)
11103 #define LD_NAME "clang"
11104 #define LD_OPTIONS "--shared"
11105 #elif defined(TARGET_WIN32_MSVC)
11106 #define LD_NAME "link.exe"
11107 #define LD_OPTIONS "/DLL /MACHINE:X64 /NOLOGO /INCREMENTAL:NO"
11108 #define LD_DEBUG_OPTIONS LD_OPTIONS " /DEBUG"
11109 #elif defined(TARGET_WIN32) && !defined(TARGET_ANDROID)
11110 #define LD_NAME "gcc"
11111 #define LD_OPTIONS "-shared"
11112 #elif defined(TARGET_X86) && defined(TARGET_MACH)
11113 #define LD_NAME "clang"
11114 #define LD_OPTIONS "-m32 -dynamiclib"
11115 #elif defined(TARGET_ARM) && !defined(TARGET_ANDROID)
11116 #define LD_NAME "gcc"
11117 #define LD_OPTIONS "--shared"
11118 #elif defined(TARGET_POWERPC64)
11119 #define LD_OPTIONS "-m elf64ppc"
11120 #endif
11121
11122 #ifndef LD_OPTIONS
11123 #define LD_OPTIONS ""
11124 #endif
11125
11126         if (acfg->aot_opts.asm_only) {
11127                 aot_printf (acfg, "Output file: '%s'.\n", acfg->tmpfname);
11128                 if (acfg->aot_opts.static_link)
11129                         aot_printf (acfg, "Linking symbol: '%s'.\n", acfg->static_linking_symbol);
11130                 if (acfg->llvm)
11131                         aot_printf (acfg, "LLVM output file: '%s'.\n", acfg->llvm_sfile);
11132                 return 0;
11133         }
11134
11135         if (acfg->aot_opts.static_link) {
11136                 if (acfg->aot_opts.outfile)
11137                         objfile = g_strdup_printf ("%s", acfg->aot_opts.outfile);
11138                 else
11139                         objfile = g_strdup_printf ("%s." AS_OBJECT_FILE_SUFFIX, acfg->image->name);
11140         } else {
11141                 objfile = g_strdup_printf ("%s." AS_OBJECT_FILE_SUFFIX, acfg->tmpfname);
11142         }
11143
11144 #ifdef TARGET_OSX
11145         g_string_append (acfg->as_args, "-c -x assembler");
11146 #endif
11147
11148         command = g_strdup_printf ("\"%s%s\" %s %s -o %s %s", tool_prefix, AS_NAME, AS_OPTIONS,
11149                         acfg->as_args ? acfg->as_args->str : "",
11150                         wrap_path (objfile), wrap_path (acfg->tmpfname));
11151         aot_printf (acfg, "Executing the native assembler: %s\n", command);
11152         if (execute_system (command) != 0) {
11153                 g_free (command);
11154                 g_free (objfile);
11155                 return 1;
11156         }
11157
11158         if (acfg->llvm && !acfg->llvm_owriter) {
11159                 command = g_strdup_printf ("\"%s%s\" %s %s -o %s %s", tool_prefix, AS_NAME, AS_OPTIONS,
11160                         acfg->as_args ? acfg->as_args->str : "",
11161                         wrap_path (acfg->llvm_ofile), wrap_path (acfg->llvm_sfile));
11162                 aot_printf (acfg, "Executing the native assembler: %s\n", command);
11163                 if (execute_system (command) != 0) {
11164                         g_free (command);
11165                         g_free (objfile);
11166                         return 1;
11167                 }
11168         }
11169
11170         g_free (command);
11171
11172         if (acfg->aot_opts.static_link) {
11173                 aot_printf (acfg, "Output file: '%s'.\n", objfile);
11174                 aot_printf (acfg, "Linking symbol: '%s'.\n", acfg->static_linking_symbol);
11175                 g_free (objfile);
11176                 return 0;
11177         }
11178
11179         if (acfg->aot_opts.outfile)
11180                 outfile_name = g_strdup_printf ("%s", acfg->aot_opts.outfile);
11181         else
11182                 outfile_name = g_strdup_printf ("%s%s", acfg->image->name, MONO_SOLIB_EXT);
11183
11184         tmp_outfile_name = g_strdup_printf ("%s.tmp", outfile_name);
11185
11186         if (acfg->llvm) {
11187                 llvm_ofile = g_strdup_printf ("\"%s\"", acfg->llvm_ofile);
11188         } else {
11189                 llvm_ofile = g_strdup ("");
11190         }
11191
11192         /* replace the ; flags separators with spaces */
11193         g_strdelimit (ld_flags, ";", ' ');
11194
11195         if (acfg->aot_opts.llvm_only)
11196                 ld_flags = g_strdup_printf ("%s %s", ld_flags, "-lstdc++");
11197
11198 #ifdef TARGET_WIN32_MSVC
11199         g_assert (tmp_outfile_name != NULL);
11200         g_assert (objfile != NULL);
11201         command = g_strdup_printf ("\"%s%s\" %s %s /OUT:\"%s\" \"%s\"", tool_prefix, LD_NAME,
11202                         acfg->aot_opts.nodebug ? LD_OPTIONS : LD_DEBUG_OPTIONS, ld_flags, tmp_outfile_name, objfile);
11203 #elif defined(LD_NAME)
11204         command = g_strdup_printf ("%s%s %s -o %s %s %s %s", tool_prefix, LD_NAME, LD_OPTIONS,
11205                 wrap_path (tmp_outfile_name), wrap_path (llvm_ofile),
11206                 wrap_path (g_strdup_printf ("%s." AS_OBJECT_FILE_SUFFIX, acfg->tmpfname)), ld_flags);
11207 #else
11208         // Default (linux)
11209         if (acfg->aot_opts.tool_prefix) {
11210                 /* Cross compiling */
11211                 command = g_strdup_printf ("\"%sld\" %s -shared -o %s %s %s %s", tool_prefix, LD_OPTIONS,
11212                                                                    wrap_path (tmp_outfile_name), wrap_path (llvm_ofile),
11213                                                                    wrap_path (g_strdup_printf ("%s." AS_OBJECT_FILE_SUFFIX, acfg->tmpfname)), ld_flags);
11214         } else {
11215                 char *args = g_strdup_printf ("%s -shared -o %s %s %s %s", LD_OPTIONS,
11216                                                                           wrap_path (tmp_outfile_name), wrap_path (llvm_ofile),
11217                                                                           wrap_path (g_strdup_printf ("%s." AS_OBJECT_FILE_SUFFIX, acfg->tmpfname)), ld_flags);
11218
11219                 if (acfg->aot_opts.llvm_only) {
11220                         command = g_strdup_printf ("clang++ %s", args);
11221                 } else {
11222                         command = g_strdup_printf ("\"%sld\" %s", tool_prefix, args);
11223                 }
11224                 g_free (args);
11225         }
11226 #endif
11227         aot_printf (acfg, "Executing the native linker: %s\n", command);
11228         if (execute_system (command) != 0) {
11229                 g_free (tmp_outfile_name);
11230                 g_free (outfile_name);
11231                 g_free (command);
11232                 g_free (objfile);
11233                 g_free (ld_flags);
11234                 return 1;
11235         }
11236
11237         g_free (command);
11238
11239         /*com = g_strdup_printf ("strip --strip-unneeded %s%s", acfg->image->name, MONO_SOLIB_EXT);
11240         printf ("Stripping the binary: %s\n", com);
11241         execute_system (com);
11242         g_free (com);*/
11243
11244 #if defined(TARGET_ARM) && !defined(TARGET_MACH)
11245         /*
11246          * gas generates 'mapping symbols' each time code and data is mixed, which
11247          * happens a lot in emit_and_reloc_code (), so we need to get rid of them.
11248          */
11249         command = g_strdup_printf ("\"%sstrip\" --strip-symbol=\\$a --strip-symbol=\\$d %s", wrap_path(tool_prefix), wrap_path(tmp_outfile_name));
11250         aot_printf (acfg, "Stripping the binary: %s\n", command);
11251         if (execute_system (command) != 0) {
11252                 g_free (tmp_outfile_name);
11253                 g_free (outfile_name);
11254                 g_free (command);
11255                 g_free (objfile);
11256                 return 1;
11257         }
11258 #endif
11259
11260         if (0 != rename (tmp_outfile_name, outfile_name)) {
11261                 if (G_FILE_ERROR_EXIST == g_file_error_from_errno (errno)) {
11262                         /* Since we are rebuilding the module we need to be able to replace any old copies. Remove old file and retry rename operation. */
11263                         unlink (outfile_name);
11264                         rename (tmp_outfile_name, outfile_name);
11265                 }
11266         }
11267
11268 #if defined(TARGET_MACH)
11269         command = g_strdup_printf ("dsymutil \"%s\"", outfile_name);
11270         aot_printf (acfg, "Executing dsymutil: %s\n", command);
11271         if (execute_system (command) != 0) {
11272                 return 1;
11273         }
11274 #endif
11275
11276         if (!acfg->aot_opts.save_temps)
11277                 unlink (objfile);
11278
11279         g_free (tmp_outfile_name);
11280         g_free (outfile_name);
11281         g_free (objfile);
11282
11283         if (acfg->aot_opts.save_temps)
11284                 aot_printf (acfg, "Retained input file.\n");
11285         else
11286                 unlink (acfg->tmpfname);
11287
11288         return 0;
11289 }
11290
11291 static guint8
11292 profread_byte (FILE *infile)
11293 {
11294         guint8 i;
11295         int res;
11296
11297         res = fread (&i, 1, 1, infile);
11298         g_assert (res == 1);
11299         return i;
11300 }
11301
11302 static int
11303 profread_int (FILE *infile)
11304 {
11305         int i, res;
11306
11307         res = fread (&i, 4, 1, infile);
11308         g_assert (res == 1);
11309         return i;
11310 }
11311
11312 static char*
11313 profread_string (FILE *infile)
11314 {
11315         int len, res;
11316         char *pbuf;
11317
11318         len = profread_int (infile);
11319         pbuf = (char*)g_malloc (len + 1);
11320         res = fread (pbuf, 1, len, infile);
11321         g_assert (res == len);
11322         pbuf [len] = '\0';
11323         return pbuf;
11324 }
11325
11326 static void
11327 load_profile_file (MonoAotCompile *acfg, char *filename)
11328 {
11329         FILE *infile;
11330         char buf [1024];
11331         int res, len, version;
11332         char magic [32];
11333
11334         infile = fopen (filename, "r");
11335         if (!infile) {
11336                 fprintf (stderr, "Unable to open file '%s': %s.\n", filename, strerror (errno));
11337                 exit (1);
11338         }
11339
11340         printf ("Using profile data file '%s'\n", filename);
11341
11342         sprintf (magic, AOT_PROFILER_MAGIC);
11343         len = strlen (magic);
11344         res = fread (buf, 1, len, infile);
11345         magic [len] = '\0';
11346         buf [len] = '\0';
11347         if ((res != len) || strcmp (buf, magic) != 0) {
11348                 printf ("Profile file has wrong header: '%s'.\n", buf);
11349                 fclose (infile);
11350                 exit (1);
11351         }
11352         guint32 expected_version = (AOT_PROFILER_MAJOR_VERSION << 16) | AOT_PROFILER_MINOR_VERSION;
11353         version = profread_int (infile);
11354         if (version != expected_version) {
11355                 printf ("Profile file has wrong version 0x%4x, expected 0x%4x.\n", version, expected_version);
11356                 fclose (infile);
11357                 exit (1);
11358         }
11359
11360         ProfileData *data = g_new0 (ProfileData, 1);
11361         data->images = g_hash_table_new (NULL, NULL);
11362         data->classes = g_hash_table_new (NULL, NULL);
11363         data->ginsts = g_hash_table_new (NULL, NULL);
11364         data->methods = g_hash_table_new (NULL, NULL);
11365
11366         while (TRUE) {
11367                 int type = profread_byte (infile);
11368                 int id = profread_int (infile);
11369
11370                 if (type == AOTPROF_RECORD_NONE)
11371                         break;
11372
11373                 switch (type) {
11374                 case AOTPROF_RECORD_IMAGE: {
11375                         ImageProfileData *idata = g_new0 (ImageProfileData, 1);
11376                         idata->name = profread_string (infile);
11377                         char *mvid = profread_string (infile);
11378                         g_free (mvid);
11379                         g_hash_table_insert (data->images, GINT_TO_POINTER (id), idata);
11380                         break;
11381                 }
11382                 case AOTPROF_RECORD_GINST: {
11383                         int i;
11384                         int len = profread_int (infile);
11385
11386                         GInstProfileData *gdata = g_new0 (GInstProfileData, 1);
11387                         gdata->argc = len;
11388                         gdata->argv = g_new0 (ClassProfileData*, len);
11389
11390                         for (i = 0; i < len; ++i) {
11391                                 int class_id = profread_int (infile);
11392
11393                                 gdata->argv [i] = g_hash_table_lookup (data->classes, GINT_TO_POINTER (class_id));
11394                                 g_assert (gdata->argv [i]);
11395                         }
11396                         g_hash_table_insert (data->ginsts, GINT_TO_POINTER (id), gdata);
11397                         break;
11398                 }
11399                 case AOTPROF_RECORD_TYPE: {
11400                         int type = profread_byte (infile);
11401
11402                         switch (type) {
11403                         case MONO_TYPE_CLASS: {
11404                                 int image_id = profread_int (infile);
11405                                 int ginst_id = profread_int (infile);
11406                                 char *class_name = profread_string (infile);
11407
11408                                 ImageProfileData *image = g_hash_table_lookup (data->images, GINT_TO_POINTER (image_id));
11409                                 g_assert (image);
11410
11411                                 char *p = strrchr (class_name, '.');
11412                                 g_assert (p);
11413                                 *p = '\0';
11414
11415                                 ClassProfileData *cdata = g_new0 (ClassProfileData, 1);
11416                                 cdata->image = image;
11417                                 cdata->ns = g_strdup (class_name);
11418                                 cdata->name = g_strdup (p + 1);
11419
11420                                 if (ginst_id != -1) {
11421                                         cdata->inst = g_hash_table_lookup (data->ginsts, GINT_TO_POINTER (ginst_id));
11422                                         g_assert (cdata->inst);
11423                                 }
11424                                 g_free (class_name);
11425
11426                                 g_hash_table_insert (data->classes, GINT_TO_POINTER (id), cdata);
11427                                 break;
11428                         }
11429 #if 0
11430                         case MONO_TYPE_SZARRAY: {
11431                                 int elem_id = profread_int (infile);
11432                                 // FIXME:
11433                                 break;
11434                         }
11435 #endif
11436                         default:
11437                                 g_assert_not_reached ();
11438                                 break;
11439                         }
11440                         break;
11441                 }
11442                 case AOTPROF_RECORD_METHOD: {
11443                         int class_id = profread_int (infile);
11444                         int ginst_id = profread_int (infile);
11445                         int param_count = profread_int (infile);
11446                         char *method_name = profread_string (infile);
11447                         char *sig = profread_string (infile);
11448
11449                         ClassProfileData *klass = g_hash_table_lookup (data->classes, GINT_TO_POINTER (class_id));
11450                         g_assert (klass);
11451
11452                         MethodProfileData *mdata = g_new0 (MethodProfileData, 1);
11453                         mdata->id = id;
11454                         mdata->klass = klass;
11455                         mdata->name = method_name;
11456                         mdata->signature = sig;
11457                         mdata->param_count = param_count;
11458
11459                         if (ginst_id != -1) {
11460                                 mdata->inst = g_hash_table_lookup (data->ginsts, GINT_TO_POINTER (ginst_id));
11461                                 g_assert (mdata->inst);
11462                         }
11463                         g_hash_table_insert (data->methods, GINT_TO_POINTER (id), mdata);
11464                         break;
11465                 }
11466                 default:
11467                         printf ("%d\n", type);
11468                         g_assert_not_reached ();
11469                         break;
11470                 }
11471         }
11472
11473         fclose (infile);
11474         acfg->profile_data = g_list_append (acfg->profile_data, data);
11475 }
11476
11477 static void
11478 resolve_class (ClassProfileData *cdata);
11479
11480 static void
11481 resolve_ginst (GInstProfileData *inst_data)
11482 {
11483         int i;
11484
11485         if (inst_data->inst)
11486                 return;
11487
11488         for (i = 0; i < inst_data->argc; ++i) {
11489                 resolve_class (inst_data->argv [i]);
11490                 if (!inst_data->argv [i]->klass)
11491                         return;
11492         }
11493         MonoType **args = g_new0 (MonoType*, inst_data->argc);
11494         for (i = 0; i < inst_data->argc; ++i)
11495                 args [i] = &inst_data->argv [i]->klass->byval_arg;
11496
11497         inst_data->inst = mono_metadata_get_generic_inst (inst_data->argc, args);
11498 }
11499
11500 static void
11501 resolve_class (ClassProfileData *cdata)
11502 {
11503         ERROR_DECL (error);
11504         MonoClass *klass;
11505
11506         if (!cdata->image->image)
11507                 return;
11508
11509         klass = mono_class_from_name_checked (cdata->image->image, cdata->ns, cdata->name, error);
11510         if (!klass) {
11511                 //printf ("[%s] %s.%s\n", cdata->image->name, cdata->ns, cdata->name);
11512                 return;
11513         }
11514         if (cdata->inst) {
11515                 resolve_ginst (cdata->inst);
11516                 if (!cdata->inst->inst)
11517                         return;
11518                 MonoGenericContext ctx;
11519
11520                 memset (&ctx, 0, sizeof (ctx));
11521                 ctx.class_inst = cdata->inst->inst;
11522                 cdata->klass = mono_class_inflate_generic_class_checked (klass, &ctx, error);
11523         } else {
11524                 cdata->klass = klass;
11525         }
11526 }
11527
11528 /*
11529  * Resolve the profile data to the corresponding loaded classes/methods etc. if possible.
11530  */
11531 static void
11532 resolve_profile_data (MonoAotCompile *acfg, ProfileData *data)
11533 {
11534         GHashTableIter iter;
11535         gpointer key, value;
11536         int i;
11537
11538         if (!data)
11539                 return;
11540
11541         /* Images */
11542         GPtrArray *assemblies = mono_domain_get_assemblies (mono_get_root_domain (), FALSE);
11543         g_hash_table_iter_init (&iter, data->images);
11544         while (g_hash_table_iter_next (&iter, &key, &value)) {
11545                 ImageProfileData *idata = (ImageProfileData*)value;
11546
11547                 for (i = 0; i < assemblies->len; ++i) {
11548                         MonoAssembly *ass = g_ptr_array_index (assemblies, i);
11549
11550                         if (!strcmp (ass->aname.name, idata->name)) {
11551                                 idata->image = ass->image;
11552                                 break;
11553                         }
11554                 }
11555         }
11556         g_ptr_array_free (assemblies, TRUE);
11557
11558         /* Classes */
11559         g_hash_table_iter_init (&iter, data->classes);
11560         while (g_hash_table_iter_next (&iter, &key, &value)) {
11561                 ClassProfileData *cdata = (ClassProfileData*)value;
11562
11563                 if (!cdata->image->image) {
11564                         if (acfg->aot_opts.verbose)
11565                                 printf ("Unable to load class '%s.%s' because its image '%s' is not loaded.\n", cdata->ns, cdata->name, cdata->image->name);
11566                         continue;
11567                 }
11568
11569                 resolve_class (cdata);
11570                 /*
11571                 if (cdata->klass)
11572                         printf ("%s %s %s\n", cdata->ns, cdata->name, mono_class_full_name (cdata->klass));
11573                 */
11574         }
11575
11576         /* Methods */
11577         g_hash_table_iter_init (&iter, data->methods);
11578         while (g_hash_table_iter_next (&iter, &key, &value)) {
11579                 MethodProfileData *mdata = (MethodProfileData*)value;
11580                 MonoClass *klass;
11581                 MonoMethod *m;
11582                 gpointer miter;
11583
11584                 resolve_class (mdata->klass);
11585                 klass = mdata->klass->klass;
11586                 if (!klass) {
11587                         if (acfg->aot_opts.verbose)
11588                                 printf ("Unable to load method '%s' because its class '%s.%s' is not loaded.\n", mdata->name, mdata->klass->ns, mdata->klass->name);
11589                         continue;
11590                 }
11591                 miter = NULL;
11592                 while ((m = mono_class_get_methods (klass, &miter))) {
11593                         ERROR_DECL (error);
11594
11595                         if (strcmp (m->name, mdata->name))
11596                                 continue;
11597                         MonoMethodSignature *sig = mono_method_signature (m);
11598                         if (!sig)
11599                                 continue;
11600                         if (sig->param_count != mdata->param_count)
11601                                 continue;
11602                         if (mdata->inst) {
11603                                 resolve_ginst (mdata->inst);
11604                                 if (!mdata->inst->inst)
11605                                         continue;
11606                                 MonoGenericContext ctx;
11607
11608                                 memset (&ctx, 0, sizeof (ctx));
11609                                 ctx.method_inst = mdata->inst->inst;
11610
11611                                 m = mono_class_inflate_generic_method_checked (m, &ctx, error);
11612                                 if (!m)
11613                                         continue;
11614                                 sig = mono_method_signature_checked (m, error);
11615                                 if (!is_ok (error)) {
11616                                         mono_error_cleanup (error);
11617                                         continue;
11618                                 }
11619                         }
11620                         char *sig_str = mono_signature_full_name (sig);
11621                         gboolean match = !strcmp (sig_str, mdata->signature);
11622                         g_free (sig_str);
11623                         if (!match)
11624
11625                                 continue;
11626                         //printf ("%s\n", mono_method_full_name (m, 1));
11627                         mdata->method = m;
11628                         break;
11629                 }
11630                 if (!mdata->method) {
11631                         if (acfg->aot_opts.verbose)
11632                                 printf ("Unable to load method '%s' from class '%s', not found.\n", mdata->name, mono_class_full_name (klass));
11633                 }
11634         }
11635 }
11636
11637 static gboolean
11638 inst_references_image (MonoGenericInst *inst, MonoImage *image)
11639 {
11640         int i;
11641
11642         for (i = 0; i < inst->type_argc; ++i) {
11643                 MonoClass *k = mono_class_from_mono_type (inst->type_argv [i]);
11644                 if (k->image == image)
11645                         return TRUE;
11646                 if (mono_class_is_ginst (k)) {
11647                         MonoGenericInst *kinst = mono_class_get_context (k)->class_inst;
11648                         if (inst_references_image (kinst, image))
11649                                 return TRUE;
11650                 }
11651         }
11652         return FALSE;
11653 }
11654
11655 static gboolean
11656 is_local_inst (MonoGenericInst *inst, MonoImage *image)
11657 {
11658         int i;
11659
11660         for (i = 0; i < inst->type_argc; ++i) {
11661                 MonoClass *k = mono_class_from_mono_type (inst->type_argv [i]);
11662                 if (!MONO_TYPE_IS_PRIMITIVE (inst->type_argv [i]) && k->image != image)
11663                         return FALSE;
11664         }
11665         return TRUE;
11666 }
11667
11668 static void
11669 add_profile_instances (MonoAotCompile *acfg, ProfileData *data)
11670 {
11671         GHashTableIter iter;
11672         gpointer key, value;
11673         int count = 0;
11674
11675         if (!data)
11676                 return;
11677
11678         if (acfg->aot_opts.profile_only) {
11679                 /* Add methods referenced by the profile */
11680                 g_hash_table_iter_init (&iter, data->methods);
11681                 while (g_hash_table_iter_next (&iter, &key, &value)) {
11682                         MethodProfileData *mdata = (MethodProfileData*)value;
11683                         MonoMethod *m = mdata->method;
11684
11685                         if (!m)
11686                                 continue;
11687                         if (m->is_inflated)
11688                                 continue;
11689                         add_extra_method (acfg, m);
11690                         g_hash_table_insert (acfg->profile_methods, m, m);
11691                         count ++;
11692                 }
11693         }
11694
11695         /*
11696          * Add method instances 'related' to this assembly to the AOT image.
11697          */
11698         g_hash_table_iter_init (&iter, data->methods);
11699         while (g_hash_table_iter_next (&iter, &key, &value)) {
11700                 MethodProfileData *mdata = (MethodProfileData*)value;
11701                 MonoMethod *m = mdata->method;
11702                 MonoGenericContext *ctx;
11703
11704                 if (!m)
11705                         continue;
11706                 if (!m->is_inflated)
11707                         continue;
11708
11709                 ctx = mono_method_get_context (m);
11710                 /* For simplicity, add instances which reference the assembly we are compiling */
11711                 if (((ctx->class_inst && inst_references_image (ctx->class_inst, acfg->image)) ||
11712                          (ctx->method_inst && inst_references_image (ctx->method_inst, acfg->image))) &&
11713                         !mono_method_is_generic_sharable_full (m, FALSE, FALSE, FALSE)) {
11714                         //printf ("%s\n", mono_method_full_name (m, TRUE));
11715                         add_extra_method (acfg, m);
11716                         count ++;
11717                 } else if (m->klass->image == acfg->image &&
11718                         ((ctx->class_inst && is_local_inst (ctx->class_inst, acfg->image)) ||
11719                          (ctx->method_inst && is_local_inst (ctx->method_inst, acfg->image))) &&
11720                         !mono_method_is_generic_sharable_full (m, FALSE, FALSE, FALSE))  {
11721                         /* Add instances where the gtd is in the assembly and its inflated with types from this assembly or corlib */
11722                         //printf ("%s\n", mono_method_full_name (m, TRUE));
11723                         add_extra_method (acfg, m);
11724                         count ++;
11725                 }
11726                 /*
11727                  * FIXME: We might skip some instances, for example:
11728                  * Foo<Bar> won't be compiled when compiling Foo's assembly since it doesn't match the first case,
11729                  * and it won't be compiled when compiling Bar's assembly if Foo's assembly is not loaded.
11730                  */
11731         }
11732
11733         printf ("Added %d methods from profile.\n", count);
11734 }
11735
11736 static void
11737 init_got_info (GotInfo *info)
11738 {
11739         int i;
11740
11741         info->patch_to_got_offset = g_hash_table_new (mono_patch_info_hash, mono_patch_info_equal);
11742         info->patch_to_got_offset_by_type = g_new0 (GHashTable*, MONO_PATCH_INFO_NUM);
11743         for (i = 0; i < MONO_PATCH_INFO_NUM; ++i)
11744                 info->patch_to_got_offset_by_type [i] = g_hash_table_new (mono_patch_info_hash, mono_patch_info_equal);
11745         info->got_patches = g_ptr_array_new ();
11746 }
11747
11748 static MonoAotCompile*
11749 acfg_create (MonoAssembly *ass, guint32 opts)
11750 {
11751         MonoImage *image = ass->image;
11752         MonoAotCompile *acfg;
11753
11754         acfg = g_new0 (MonoAotCompile, 1);
11755         acfg->methods = g_ptr_array_new ();
11756         acfg->method_indexes = g_hash_table_new (NULL, NULL);
11757         acfg->method_depth = g_hash_table_new (NULL, NULL);
11758         acfg->plt_offset_to_entry = g_hash_table_new (NULL, NULL);
11759         acfg->patch_to_plt_entry = g_new0 (GHashTable*, MONO_PATCH_INFO_NUM);
11760         acfg->method_to_cfg = g_hash_table_new (NULL, NULL);
11761         acfg->token_info_hash = g_hash_table_new_full (NULL, NULL, NULL, NULL);
11762         acfg->method_to_pinvoke_import = g_hash_table_new_full (NULL, NULL, NULL, g_free);
11763         acfg->image_hash = g_hash_table_new (NULL, NULL);
11764         acfg->image_table = g_ptr_array_new ();
11765         acfg->globals = g_ptr_array_new ();
11766         acfg->image = image;
11767         acfg->opts = opts;
11768         /* TODO: Write out set of SIMD instructions used, rather than just those available */
11769         acfg->simd_opts = mono_arch_cpu_enumerate_simd_versions ();
11770         acfg->mempool = mono_mempool_new ();
11771         acfg->extra_methods = g_ptr_array_new ();
11772         acfg->unwind_info_offsets = g_hash_table_new (NULL, NULL);
11773         acfg->unwind_ops = g_ptr_array_new ();
11774         acfg->method_label_hash = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL);
11775         acfg->method_order = g_ptr_array_new ();
11776         acfg->export_names = g_hash_table_new (NULL, NULL);
11777         acfg->klass_blob_hash = g_hash_table_new (NULL, NULL);
11778         acfg->method_blob_hash = g_hash_table_new (NULL, NULL);
11779         acfg->plt_entry_debug_sym_cache = g_hash_table_new (g_str_hash, g_str_equal);
11780         acfg->gsharedvt_in_signatures = g_hash_table_new ((GHashFunc)mono_signature_hash, (GEqualFunc)mono_metadata_signature_equal);
11781         acfg->gsharedvt_out_signatures = g_hash_table_new ((GHashFunc)mono_signature_hash, (GEqualFunc)mono_metadata_signature_equal);
11782         acfg->profile_methods = g_hash_table_new (NULL, NULL);
11783         mono_os_mutex_init_recursive (&acfg->mutex);
11784
11785         init_got_info (&acfg->got_info);
11786         init_got_info (&acfg->llvm_got_info);
11787
11788         return acfg;
11789 }
11790
11791 static void
11792 got_info_free (GotInfo *info)
11793 {
11794         int i;
11795
11796         for (i = 0; i < MONO_PATCH_INFO_NUM; ++i)
11797                 g_hash_table_destroy (info->patch_to_got_offset_by_type [i]);
11798         g_free (info->patch_to_got_offset_by_type);
11799         g_hash_table_destroy (info->patch_to_got_offset);
11800         g_ptr_array_free (info->got_patches, TRUE);
11801 }
11802
11803 static void
11804 acfg_free (MonoAotCompile *acfg)
11805 {
11806         int i;
11807
11808         mono_img_writer_destroy (acfg->w);
11809         for (i = 0; i < acfg->nmethods; ++i)
11810                 if (acfg->cfgs [i])
11811                         mono_destroy_compile (acfg->cfgs [i]);
11812
11813         g_free (acfg->cfgs);
11814
11815         g_free (acfg->static_linking_symbol);
11816         g_free (acfg->got_symbol);
11817         g_free (acfg->plt_symbol);
11818         g_ptr_array_free (acfg->methods, TRUE);
11819         g_ptr_array_free (acfg->image_table, TRUE);
11820         g_ptr_array_free (acfg->globals, TRUE);
11821         g_ptr_array_free (acfg->unwind_ops, TRUE);
11822         g_hash_table_destroy (acfg->method_indexes);
11823         g_hash_table_destroy (acfg->method_depth);
11824         g_hash_table_destroy (acfg->plt_offset_to_entry);
11825         for (i = 0; i < MONO_PATCH_INFO_NUM; ++i) {
11826                 if (acfg->patch_to_plt_entry [i])
11827                         g_hash_table_destroy (acfg->patch_to_plt_entry [i]);
11828         }
11829         g_free (acfg->patch_to_plt_entry);
11830         g_hash_table_destroy (acfg->method_to_cfg);
11831         g_hash_table_destroy (acfg->token_info_hash);
11832         g_hash_table_destroy (acfg->method_to_pinvoke_import);
11833         g_hash_table_destroy (acfg->image_hash);
11834         g_hash_table_destroy (acfg->unwind_info_offsets);
11835         g_hash_table_destroy (acfg->method_label_hash);
11836         if (acfg->typespec_classes)
11837                 g_hash_table_destroy (acfg->typespec_classes);
11838         g_hash_table_destroy (acfg->export_names);
11839         g_hash_table_destroy (acfg->plt_entry_debug_sym_cache);
11840         g_hash_table_destroy (acfg->klass_blob_hash);
11841         g_hash_table_destroy (acfg->method_blob_hash);
11842         got_info_free (&acfg->got_info);
11843         got_info_free (&acfg->llvm_got_info);
11844         arch_free_unwind_info_section_cache (acfg);
11845         mono_mempool_destroy (acfg->mempool);
11846         g_free (acfg);
11847 }
11848
11849 #define WRAPPER(e,n) n,
11850 static const char* const
11851 wrapper_type_names [MONO_WRAPPER_NUM + 1] = {
11852 #include "mono/metadata/wrapper-types.h"
11853         NULL
11854 };
11855
11856 static G_GNUC_UNUSED const char*
11857 get_wrapper_type_name (int type)
11858 {
11859         return wrapper_type_names [type];
11860 }
11861
11862 //#define DUMP_PLT
11863 //#define DUMP_GOT
11864
11865 static void aot_dump (MonoAotCompile *acfg)
11866 {
11867         FILE *dumpfile;
11868         char * dumpname;
11869
11870         JsonWriter writer;
11871         mono_json_writer_init (&writer);
11872
11873         mono_json_writer_object_begin(&writer);
11874
11875         // Methods
11876         mono_json_writer_indent (&writer);
11877         mono_json_writer_object_key(&writer, "methods");
11878         mono_json_writer_array_begin (&writer);
11879
11880         int i;
11881         for (i = 0; i < acfg->nmethods; ++i) {
11882                 MonoCompile *cfg;
11883                 MonoMethod *method;
11884                 MonoClass *klass;
11885
11886                 cfg = acfg->cfgs [i];
11887                 if (ignore_cfg (cfg))
11888                         continue;
11889
11890                 method = cfg->orig_method;
11891
11892                 mono_json_writer_indent (&writer);
11893                 mono_json_writer_object_begin(&writer);
11894
11895                 mono_json_writer_indent (&writer);
11896                 mono_json_writer_object_key(&writer, "name");
11897                 mono_json_writer_printf (&writer, "\"%s\",\n", method->name);
11898
11899                 mono_json_writer_indent (&writer);
11900                 mono_json_writer_object_key(&writer, "signature");
11901                 mono_json_writer_printf (&writer, "\"%s\",\n", mono_method_get_full_name (method));
11902
11903                 mono_json_writer_indent (&writer);
11904                 mono_json_writer_object_key(&writer, "code_size");
11905                 mono_json_writer_printf (&writer, "\"%d\",\n", cfg->code_size);
11906
11907                 klass = method->klass;
11908
11909                 mono_json_writer_indent (&writer);
11910                 mono_json_writer_object_key(&writer, "class");
11911                 mono_json_writer_printf (&writer, "\"%s\",\n", klass->name);
11912
11913                 mono_json_writer_indent (&writer);
11914                 mono_json_writer_object_key(&writer, "namespace");
11915                 mono_json_writer_printf (&writer, "\"%s\",\n", klass->name_space);
11916
11917                 mono_json_writer_indent (&writer);
11918                 mono_json_writer_object_key(&writer, "wrapper_type");
11919                 mono_json_writer_printf (&writer, "\"%s\",\n", get_wrapper_type_name(method->wrapper_type));
11920
11921                 mono_json_writer_indent_pop (&writer);
11922                 mono_json_writer_indent (&writer);
11923                 mono_json_writer_object_end (&writer);
11924                 mono_json_writer_printf (&writer, ",\n");
11925         }
11926
11927         mono_json_writer_indent_pop (&writer);
11928         mono_json_writer_indent (&writer);
11929         mono_json_writer_array_end (&writer);
11930         mono_json_writer_printf (&writer, ",\n");
11931
11932         // PLT entries
11933 #ifdef DUMP_PLT
11934         mono_json_writer_indent_push (&writer);
11935         mono_json_writer_indent (&writer);
11936         mono_json_writer_object_key(&writer, "plt");
11937         mono_json_writer_array_begin (&writer);
11938
11939         for (i = 0; i < acfg->plt_offset; ++i) {
11940                 MonoPltEntry *plt_entry = NULL;
11941                 MonoJumpInfo *ji;
11942
11943                 if (i == 0)
11944                         /*
11945                          * The first plt entry is unused.
11946                          */
11947                         continue;
11948
11949                 plt_entry = g_hash_table_lookup (acfg->plt_offset_to_entry, GUINT_TO_POINTER (i));
11950                 ji = plt_entry->ji;
11951
11952                 mono_json_writer_indent (&writer);
11953                 mono_json_writer_printf (&writer, "{ ");
11954                 mono_json_writer_object_key(&writer, "symbol");
11955                 mono_json_writer_printf (&writer, "\"%s\" },\n", plt_entry->symbol);
11956         }
11957
11958         mono_json_writer_indent_pop (&writer);
11959         mono_json_writer_indent (&writer);
11960         mono_json_writer_array_end (&writer);
11961         mono_json_writer_printf (&writer, ",\n");
11962 #endif
11963
11964         // GOT entries
11965 #ifdef DUMP_GOT
11966         mono_json_writer_indent_push (&writer);
11967         mono_json_writer_indent (&writer);
11968         mono_json_writer_object_key(&writer, "got");
11969         mono_json_writer_array_begin (&writer);
11970
11971         mono_json_writer_indent_push (&writer);
11972         for (i = 0; i < acfg->got_info.got_patches->len; ++i) {
11973                 MonoJumpInfo *ji = g_ptr_array_index (acfg->got_info.got_patches, i);
11974
11975                 mono_json_writer_indent (&writer);
11976                 mono_json_writer_printf (&writer, "{ ");
11977                 mono_json_writer_object_key(&writer, "patch_name");
11978                 mono_json_writer_printf (&writer, "\"%s\" },\n", get_patch_name (ji->type));
11979         }
11980
11981         mono_json_writer_indent_pop (&writer);
11982         mono_json_writer_indent (&writer);
11983         mono_json_writer_array_end (&writer);
11984         mono_json_writer_printf (&writer, ",\n");
11985 #endif
11986
11987         mono_json_writer_indent_pop (&writer);
11988         mono_json_writer_indent (&writer);
11989         mono_json_writer_object_end (&writer);
11990
11991         dumpname = g_strdup_printf ("%s.json", g_path_get_basename (acfg->image->name));
11992         dumpfile = fopen (dumpname, "w+");
11993         g_free (dumpname);
11994
11995         fprintf (dumpfile, "%s", writer.text->str);
11996         fclose (dumpfile);
11997
11998         mono_json_writer_destroy (&writer);
11999 }
12000
12001 static const char *preinited_jit_icalls[] = {
12002         "mono_aot_init_llvm_method",
12003         "mono_aot_init_gshared_method_this",
12004         "mono_aot_init_gshared_method_mrgctx",
12005         "mono_aot_init_gshared_method_vtable",
12006         "mono_llvm_throw_corlib_exception",
12007         "mono_init_vtable_slot",
12008         "mono_helper_ldstr_mscorlib"
12009 };
12010
12011 static void
12012 add_preinit_got_slots (MonoAotCompile *acfg)
12013 {
12014         MonoJumpInfo *ji;
12015         int i;
12016
12017         /*
12018          * Allocate the first few GOT entries to information which is needed frequently, or it is needed
12019          * during method initialization etc.
12020          */
12021
12022         ji = (MonoJumpInfo *)mono_mempool_alloc0 (acfg->mempool, sizeof (MonoJumpInfo));
12023         ji->type = MONO_PATCH_INFO_IMAGE;
12024         ji->data.image = acfg->image;
12025         get_got_offset (acfg, FALSE, ji);
12026         get_got_offset (acfg, TRUE, ji);
12027
12028         ji = (MonoJumpInfo *)mono_mempool_alloc0 (acfg->mempool, sizeof (MonoJumpInfo));
12029         ji->type = MONO_PATCH_INFO_MSCORLIB_GOT_ADDR;
12030         get_got_offset (acfg, FALSE, ji);
12031         get_got_offset (acfg, TRUE, ji);
12032
12033         ji = (MonoJumpInfo *)mono_mempool_alloc0 (acfg->mempool, sizeof (MonoJumpInfo));
12034         ji->type = MONO_PATCH_INFO_GC_CARD_TABLE_ADDR;
12035         get_got_offset (acfg, FALSE, ji);
12036         get_got_offset (acfg, TRUE, ji);
12037
12038         ji = (MonoJumpInfo *)mono_mempool_alloc0 (acfg->mempool, sizeof (MonoJumpInfo));
12039         ji->type = MONO_PATCH_INFO_GC_NURSERY_START;
12040         get_got_offset (acfg, FALSE, ji);
12041         get_got_offset (acfg, TRUE, ji);
12042
12043         ji = (MonoJumpInfo *)mono_mempool_alloc0 (acfg->mempool, sizeof (MonoJumpInfo));
12044         ji->type = MONO_PATCH_INFO_AOT_MODULE;
12045         get_got_offset (acfg, FALSE, ji);
12046         get_got_offset (acfg, TRUE, ji);
12047
12048         ji = (MonoJumpInfo *)mono_mempool_alloc0 (acfg->mempool, sizeof (MonoJumpInfo));
12049         ji->type = MONO_PATCH_INFO_GC_NURSERY_BITS;
12050         get_got_offset (acfg, FALSE, ji);
12051         get_got_offset (acfg, TRUE, ji);
12052
12053         for (i = 0; i < TLS_KEY_NUM; i++) {
12054                 ji = (MonoJumpInfo *)mono_mempool_alloc0 (acfg->mempool, sizeof (MonoJumpInfo));
12055                 ji->type = MONO_PATCH_INFO_GET_TLS_TRAMP;
12056                 ji->data.index = i;
12057                 get_got_offset (acfg, FALSE, ji);
12058                 get_got_offset (acfg, TRUE, ji);
12059
12060                 ji = (MonoJumpInfo *)mono_mempool_alloc0 (acfg->mempool, sizeof (MonoJumpInfo));
12061                 ji->type = MONO_PATCH_INFO_SET_TLS_TRAMP;
12062                 ji->data.index = i;
12063                 get_got_offset (acfg, FALSE, ji);
12064                 get_got_offset (acfg, TRUE, ji);
12065         }
12066
12067         ji = (MonoJumpInfo *)mono_mempool_alloc0 (acfg->mempool, sizeof (MonoJumpInfo));
12068         ji->type = MONO_PATCH_INFO_JIT_THREAD_ATTACH;
12069         get_got_offset (acfg, FALSE, ji);
12070         get_got_offset (acfg, TRUE, ji);
12071
12072         /* Called by native-to-managed wrappers on possibly unattached threads */
12073         ji = (MonoJumpInfo *)mono_mempool_alloc0 (acfg->mempool, sizeof (MonoJumpInfo));
12074         ji->type = MONO_PATCH_INFO_JIT_ICALL_ADDR_NOCALL;
12075         ji->data.name = "mono_threads_attach_coop";
12076         get_got_offset (acfg, FALSE, ji);
12077         get_got_offset (acfg, TRUE, ji);
12078
12079         for (i = 0; i < sizeof (preinited_jit_icalls) / sizeof (char*); ++i) {
12080                 ji = (MonoJumpInfo *)mono_mempool_alloc0 (acfg->mempool, sizeof (MonoAotCompile));
12081                 ji->type = MONO_PATCH_INFO_INTERNAL_METHOD;
12082                 ji->data.name = preinited_jit_icalls [i];
12083                 get_got_offset (acfg, FALSE, ji);
12084                 get_got_offset (acfg, TRUE, ji);
12085         }
12086
12087         acfg->nshared_got_entries = acfg->got_offset;
12088 }
12089
12090 static void
12091 mono_dedup_log_stats (MonoAotCompile *acfg)
12092 {
12093         GHashTableIter iter;
12094         g_assert (acfg->dedup_stats);
12095
12096         // If dedup_emit_mode, acfg is the dummy dedup module that consolidates
12097         // deduped modules
12098         g_hash_table_iter_init (&iter, acfg->method_to_cfg);
12099         MonoCompile *dcfg = NULL;
12100         MonoMethod *method = NULL;
12101
12102         size_t wrappers_size_saved = 0;
12103         size_t inflated_size_saved = 0;
12104         size_t copied_singles = 0;
12105
12106         while (g_hash_table_iter_next (&iter, (gpointer *) &method, (gpointer *)&dcfg)) {
12107                 gchar *dedup_name = mono_aot_get_mangled_method_name (method);
12108                 guint count = GPOINTER_TO_UINT(g_hash_table_lookup (acfg->dedup_stats, dedup_name));
12109
12110                 if (count == 0)
12111                         continue;
12112
12113                 if (acfg->dedup_emit_mode) {
12114                         // Size *saved* is the size due to things not emitted.
12115                         if (count < 2) {
12116                                 // Just moved, didn't save space / dedup
12117                                 copied_singles += dcfg->code_len;
12118                         } else if (method->wrapper_type != MONO_WRAPPER_NONE) {
12119                                 wrappers_size_saved += dcfg->code_len * (count - 1);
12120                         } else {
12121                                 inflated_size_saved += dcfg->code_len * (count - 1);
12122                         }
12123                 }
12124           if (acfg->aot_opts.dedup) {
12125                         if (method->wrapper_type != MONO_WRAPPER_NONE) {
12126                                 wrappers_size_saved += dcfg->code_len * count;
12127                         } else {
12128                                 inflated_size_saved += dcfg->code_len * count;
12129                         }
12130                 }
12131         }
12132
12133         aot_printf (acfg, "Dedup Pass: Size Saved From Deduped Wrappers:\t%zu bytes\n", wrappers_size_saved);
12134         aot_printf (acfg, "Dedup Pass: Size Saved From Inflated Methods:\t%zu bytes\n", inflated_size_saved);
12135         if (acfg->dedup_emit_mode)
12136                 aot_printf (acfg, "Dedup Pass: Size of Moved But Not Deduped (only 1 copy) Methods:\t%zu bytes\n", copied_singles);
12137
12138         g_hash_table_destroy (acfg->dedup_stats);
12139         acfg->dedup_stats = NULL;
12140 }
12141
12142 // Flush the cache to tell future calls what to skip
12143 static void
12144 mono_flush_method_cache (MonoAotCompile *acfg)
12145 {
12146         GHashTable *method_cache = acfg->dedup_cache;
12147         char *filename = g_strdup_printf ("%s.dedup", acfg->image->name);
12148         if (!acfg->dedup_cache_changed || !acfg->aot_opts.dedup) {
12149                 g_free (filename);
12150                 return;
12151         }
12152
12153         acfg->dedup_cache = NULL;
12154
12155         FILE *cache = fopen (filename, "w");
12156
12157         if (!cache)
12158                 g_error ("Could not create cache at %s because of error: %s\n", filename, strerror (errno));
12159
12160         GHashTableIter iter;
12161         gchar *name = NULL;
12162         g_hash_table_iter_init (&iter, method_cache);
12163         gboolean cont = TRUE;
12164         while (cont && g_hash_table_iter_next (&iter, (gpointer *) &name, NULL)) {
12165                 int res = fprintf (cache, "%s\n", name);
12166                 cont = res >= 0;
12167         }
12168         // FIXME: don't assert if error when flushing
12169         g_assert (cont);
12170
12171         fclose (cache);
12172         g_free (filename);
12173
12174         // The keys are all in the imageset, nothing to free
12175         // Values are just pointers to memory owned elsewhere, or sentinels
12176         g_hash_table_destroy (method_cache);
12177 }
12178
12179 // Read in what has been emitted by previous invocations,
12180 // what can be skipped
12181 static void
12182 mono_read_method_cache (MonoAotCompile *acfg)
12183 {
12184         char *filename = g_strdup_printf ("%s.dedup", acfg->image->name);
12185         // Only do once, when dedup_cache is null
12186         if (acfg->dedup_cache)
12187                 goto early_exit;
12188
12189         if (acfg->aot_opts.dedup_include || acfg->aot_opts.dedup)
12190                 g_assert (acfg->dedup_stats);
12191
12192         // only in skip mode
12193         if (!acfg->aot_opts.dedup)
12194                 goto early_exit;
12195
12196         g_assert (acfg->dedup_cache);
12197
12198         FILE *cache = fopen (filename, "r");
12199         if (!cache)
12200                 goto early_exit;
12201
12202         // Since we do pointer comparisons, and it can't be allocated at
12203         // the address 0x1 due to alignment, we use this as a sentinel
12204         gpointer other_acfg_sentinel = GINT_TO_POINTER (0x1);
12205
12206         if (fseek (cache, 0L, SEEK_END))
12207                 goto cleanup;
12208
12209         size_t fileLength = ftell (cache);
12210         g_assert (fileLength > 0);
12211
12212         if (fseek (cache, 0L, SEEK_SET))
12213                 goto cleanup;
12214
12215         // Avoid thousands of new malloc entries
12216         // FIXME: allocate into imageset, so we don't need to free.
12217         // put the other mangled names there too.
12218         char *bulk = g_malloc0 (fileLength * sizeof (char));
12219         size_t offset = 0;
12220
12221         while (fgets (&bulk [offset], fileLength - offset, cache)) {
12222                 // strip newline
12223                 char *line = &bulk [offset];
12224                 size_t len = strlen (line);
12225                 if (len == 0)
12226                         break;
12227
12228                 if (len >= 0 && line [len] == '\n')
12229                         line [len] = '\0';
12230                 offset += strlen (line) + 1;
12231                 g_assert (fileLength >= offset);
12232
12233                 g_hash_table_insert (acfg->dedup_cache, line, other_acfg_sentinel);
12234         }
12235
12236 cleanup:
12237         fclose (cache);
12238
12239 early_exit:
12240         g_free (filename);
12241         return;
12242 }
12243
12244 typedef struct {
12245         GHashTable *cache;
12246         GHashTable *stats;
12247         gboolean emit_inflated_methods;
12248         MonoAssembly *inflated_assembly;
12249 } MonoAotState;
12250
12251 static MonoAotState *
12252 alloc_aot_state (void)
12253 {
12254         MonoAotState *state = g_malloc (sizeof (MonoAotState));
12255         // FIXME: Should this own the memory?
12256         state->cache = g_hash_table_new (g_str_hash, g_str_equal);
12257         state->stats = g_hash_table_new (g_str_hash, g_str_equal);
12258         // Start in "collect mode"
12259         state->emit_inflated_methods = FALSE;
12260         state->inflated_assembly = NULL;
12261         return state;
12262 }
12263
12264 static void
12265 free_aot_state (MonoAotState *astate)
12266 {
12267         g_hash_table_destroy (astate->cache);
12268         g_free (astate);
12269 }
12270
12271 static void
12272 mono_add_deferred_extra_methods (MonoAotCompile *acfg, MonoAotState *astate)
12273 {
12274         GHashTableIter iter;
12275         gchar *name = NULL;
12276         MonoMethod *method = NULL;
12277
12278         acfg->dedup_emit_mode = TRUE;
12279
12280         g_hash_table_iter_init (&iter, astate->cache);
12281         while (g_hash_table_iter_next (&iter, (gpointer *) &name, (gpointer *) &method)) {
12282                 add_method_full (acfg, method, TRUE, 0);
12283         }
12284         return;
12285 }
12286
12287 static void
12288 mono_setup_dedup_state (MonoAotCompile *acfg, MonoAotState **global_aot_state, MonoAssembly *ass, MonoAotState **astate, gboolean *is_dedup_dummy)
12289 {
12290         if (!acfg->aot_opts.dedup_include && !acfg->aot_opts.dedup)
12291                 return;
12292
12293         if (global_aot_state && *global_aot_state && acfg->aot_opts.dedup_include) {
12294         // Thread the state through when making the inflate pass
12295                 *astate = *global_aot_state;
12296         }
12297
12298         if (!*astate) {
12299                 *astate = alloc_aot_state ();
12300                 *global_aot_state = *astate;
12301         }
12302
12303         acfg->dedup_cache = (*astate)->cache;
12304         acfg->dedup_stats = (*astate)->stats;
12305
12306         // fills out acfg->dedup_cache
12307         if (acfg->aot_opts.dedup)
12308                 mono_read_method_cache (acfg);
12309
12310         if (!(*astate)->inflated_assembly && acfg->aot_opts.dedup_include) {
12311                 gchar **asm_path = g_strsplit (ass->image->name, G_DIR_SEPARATOR_S, 0);
12312                 gchar *asm_file = NULL;
12313
12314                 // Get the last part of the path, the filename
12315                 for (int i=0; asm_path [i] != NULL; i++)
12316                         asm_file = asm_path [i];
12317
12318                 if (!strcmp (acfg->aot_opts.dedup_include, asm_file)) {
12319                         // Save
12320                         *is_dedup_dummy = TRUE;
12321                         (*astate)->inflated_assembly = ass;
12322                 }
12323                 g_strfreev (asm_path);
12324         } else if ((*astate)->inflated_assembly) {
12325                 *is_dedup_dummy = (ass == (*astate)->inflated_assembly);
12326         }
12327 }
12328
12329 int
12330 mono_compile_deferred_assemblies (guint32 opts, const char *aot_options, gpointer **aot_state)
12331 {
12332         // create assembly, loop and add extra_methods
12333         // in add_generic_instances , rip out what's in that for loop
12334         // and apply that to this aot_state inside of mono_compile_assembly
12335         MonoAotState *astate;
12336         astate = *(MonoAotState **)aot_state;
12337         g_assert (astate);
12338
12339         // FIXME: allow suffixes?
12340         if (!astate->inflated_assembly) {
12341                 char *inflate = strstr (aot_options, "dedup-inflate");
12342                 if (!inflate)
12343                         return 0;
12344                 else
12345                         g_error ("Error: mono was not given an assembly with the provided inflate name\n");
12346         }
12347
12348         // Switch modes
12349         astate->emit_inflated_methods = TRUE;
12350
12351         int res = mono_compile_assembly (astate->inflated_assembly, opts, aot_options, aot_state);
12352
12353         *aot_state = NULL;
12354         free_aot_state (astate);
12355
12356         return res;
12357 }
12358
12359 static const char* interp_in_static_sigs[] = {
12360         "bool ptr int32 ptr&",
12361         "bool ptr ptr&",
12362         "int32 int32 ptr&",
12363         "int32 int32 ptr ptr&",
12364         "int32 ptr int32 ptr",
12365         "int32 ptr int32 ptr&",
12366         "int32 ptr ptr&",
12367         "object object ptr ptr ptr",
12368         "ptr int32 ptr&",
12369         "ptr ptr int32 ptr ptr ptr&",
12370         "ptr ptr int32 ptr ptr&",
12371         "ptr ptr int32 ptr&",
12372         "ptr ptr ptr int32 ptr&",
12373         "ptr ptr ptr ptr& ptr&",
12374         "ptr ptr ptr ptr ptr&",
12375         "ptr ptr ptr ptr&",
12376         "ptr ptr ptr&",
12377         "ptr ptr uint32 ptr&",
12378         "ptr uint32 ptr&",
12379         "void object ptr ptr ptr",
12380         "void ptr ptr int32 ptr ptr& ptr ptr&",
12381         "void ptr ptr int32 ptr ptr&",
12382         "void ptr ptr ptr&",
12383         "void ptr ptr&",
12384         "void ptr",
12385         "void int32 ptr&",
12386         "void uint32 ptr&",
12387 };
12388
12389 int
12390 mono_compile_assembly (MonoAssembly *ass, guint32 opts, const char *aot_options, gpointer **global_aot_state)
12391 {
12392         MonoImage *image = ass->image;
12393         int i, res;
12394         gint64 all_sizes;
12395         MonoAotCompile *acfg;
12396         char *outfile_name, *tmp_outfile_name, *p;
12397         char llvm_stats_msg [256];
12398         TV_DECLARE (atv);
12399         TV_DECLARE (btv);
12400
12401         acfg = acfg_create (ass, opts);
12402
12403         memset (&acfg->aot_opts, 0, sizeof (acfg->aot_opts));
12404         acfg->aot_opts.write_symbols = TRUE;
12405         acfg->aot_opts.ntrampolines = 4096;
12406         acfg->aot_opts.nrgctx_trampolines = 4096;
12407         acfg->aot_opts.nimt_trampolines = 512;
12408         acfg->aot_opts.nrgctx_fetch_trampolines = 128;
12409         acfg->aot_opts.ngsharedvt_arg_trampolines = 512;
12410         acfg->aot_opts.llvm_path = g_strdup ("");
12411         acfg->aot_opts.temp_path = g_strdup ("");
12412 #ifdef MONOTOUCH
12413         acfg->aot_opts.use_trampolines_page = TRUE;
12414 #endif
12415
12416         mono_aot_parse_options (aot_options, &acfg->aot_opts);
12417
12418         // start dedup
12419         MonoAotState *astate = NULL;
12420         gboolean is_dedup_dummy = FALSE;
12421         mono_setup_dedup_state (acfg, (MonoAotState **) global_aot_state, ass, &astate, &is_dedup_dummy);
12422
12423         // Process later
12424         if (is_dedup_dummy && astate && !astate->emit_inflated_methods)
12425                 return 0;
12426
12427         // end dedup
12428
12429         if (acfg->aot_opts.logfile) {
12430                 acfg->logfile = fopen (acfg->aot_opts.logfile, "a+");
12431         }
12432
12433         if (acfg->aot_opts.data_outfile) {
12434                 acfg->data_outfile = fopen (acfg->aot_opts.data_outfile, "w+");
12435                 if (!acfg->data_outfile) {
12436                         aot_printerrf (acfg, "Unable to create file '%s': %s\n", acfg->aot_opts.data_outfile, strerror (errno));
12437                         return 1;
12438                 }
12439                 acfg->flags = (MonoAotFileFlags)(acfg->flags | MONO_AOT_FILE_FLAG_SEPARATE_DATA);
12440         }
12441
12442         //acfg->aot_opts.print_skipped_methods = TRUE;
12443
12444 #if !defined(MONO_ARCH_GSHAREDVT_SUPPORTED)
12445         if (acfg->opts & MONO_OPT_GSHAREDVT) {
12446                 aot_printerrf (acfg, "-O=gsharedvt not supported on this platform.\n");
12447                 return 1;
12448         }
12449         if (acfg->aot_opts.llvm_only) {
12450                 aot_printerrf (acfg, "--aot=llvmonly requires a runtime that supports gsharedvt.\n");
12451                 return 1;
12452         }
12453 #else
12454         if (acfg->aot_opts.llvm_only || mono_aot_mode_is_full (&acfg->aot_opts) || mono_aot_mode_is_hybrid (&acfg->aot_opts))
12455                 acfg->opts |= MONO_OPT_GSHAREDVT;
12456 #endif
12457
12458 #if !defined(ENABLE_LLVM)
12459         if (acfg->aot_opts.llvm_only) {
12460                 aot_printerrf (acfg, "--aot=llvmonly requires a runtime compiled with llvm support.\n");
12461                 return 1;
12462         }
12463 #endif
12464
12465         if (acfg->opts & MONO_OPT_GSHAREDVT)
12466                 mono_set_generic_sharing_vt_supported (TRUE);
12467
12468         aot_printf (acfg, "Mono Ahead of Time compiler - compiling assembly %s\n", image->name);
12469
12470         generate_aotid ((guint8*) &acfg->image->aotid);
12471
12472         char *aotid = mono_guid_to_string (acfg->image->aotid);
12473         aot_printf (acfg, "AOTID %s\n", aotid);
12474         g_free (aotid);
12475
12476 #ifndef MONO_ARCH_HAVE_FULL_AOT_TRAMPOLINES
12477         if (mono_aot_mode_is_full (&acfg->aot_opts)) {
12478                 aot_printerrf (acfg, "--aot=full is not supported on this platform.\n");
12479                 return 1;
12480         }
12481 #endif
12482
12483         if (acfg->aot_opts.direct_pinvoke && !acfg->aot_opts.static_link) {
12484                 aot_printerrf (acfg, "The 'direct-pinvoke' AOT option also requires the 'static' AOT option.\n");
12485                 return 1;
12486         }
12487
12488         if (acfg->aot_opts.static_link)
12489                 acfg->aot_opts.asm_writer = TRUE;
12490
12491         if (acfg->aot_opts.soft_debug) {
12492                 MonoDebugOptions *opt = mini_get_debug_options ();
12493
12494                 opt->mdb_optimizations = TRUE;
12495                 opt->gen_sdb_seq_points = TRUE;
12496
12497                 if (!mono_debug_enabled ()) {
12498                         aot_printerrf (acfg, "The soft-debug AOT option requires the --debug option.\n");
12499                         return 1;
12500                 }
12501                 acfg->flags = (MonoAotFileFlags)(acfg->flags | MONO_AOT_FILE_FLAG_DEBUG);
12502         }
12503
12504         if (mono_use_llvm || acfg->aot_opts.llvm) {
12505                 acfg->llvm = TRUE;
12506                 acfg->aot_opts.asm_writer = TRUE;
12507                 acfg->flags = (MonoAotFileFlags)(acfg->flags | MONO_AOT_FILE_FLAG_WITH_LLVM);
12508
12509                 if (acfg->aot_opts.soft_debug) {
12510                         aot_printerrf (acfg, "The 'soft-debug' option is not supported when compiling with LLVM.\n");
12511                         return 1;
12512                 }
12513
12514                 mini_llvm_init ();
12515
12516                 if (acfg->aot_opts.asm_only && !acfg->aot_opts.llvm_outfile) {
12517                         aot_printerrf (acfg, "Compiling with LLVM and the asm-only option requires the llvm-outfile= option.\n");
12518                         return 1;
12519                 }
12520         }
12521
12522         if (mono_aot_mode_is_full (&acfg->aot_opts)) {
12523                 acfg->flags = (MonoAotFileFlags)(acfg->flags | MONO_AOT_FILE_FLAG_FULL_AOT);
12524                 acfg->is_full_aot = TRUE;
12525         }
12526
12527         if (mono_threads_are_safepoints_enabled ())
12528                 acfg->flags = (MonoAotFileFlags)(acfg->flags | MONO_AOT_FILE_FLAG_SAFEPOINTS);
12529
12530         // The methods in dedup-emit amodules must be available on runtime startup
12531         // Note: Only one such amodule can have this attribute
12532         if (astate && astate->emit_inflated_methods)
12533                 acfg->flags = (MonoAotFileFlags)(acfg->flags | MONO_AOT_FILE_FLAG_EAGER_LOAD);
12534
12535
12536         if (acfg->aot_opts.instances_logfile_path) {
12537                 acfg->instances_logfile = fopen (acfg->aot_opts.instances_logfile_path, "w");
12538                 if (!acfg->instances_logfile) {
12539                         aot_printerrf (acfg, "Unable to create logfile: '%s'.\n", acfg->aot_opts.instances_logfile_path);
12540                         return 1;
12541                 }
12542         }
12543
12544         if (acfg->aot_opts.profile_files) {
12545                 GList *l;
12546
12547                 for (l = acfg->aot_opts.profile_files; l; l = l->next) {
12548                         load_profile_file (acfg, (char*)l->data);
12549                 }
12550         }
12551
12552         if (!mono_aot_mode_is_interp (&acfg->aot_opts)) {
12553                 int method_index;
12554
12555        for (method_index = 0; method_index < acfg->image->tables [MONO_TABLE_METHOD].rows; ++method_index) {
12556                    g_ptr_array_add (acfg->method_order,GUINT_TO_POINTER (method_index));
12557        }
12558         }
12559
12560         acfg->num_trampolines [MONO_AOT_TRAMP_SPECIFIC] = mono_aot_mode_is_full (&acfg->aot_opts) ? acfg->aot_opts.ntrampolines : 0;
12561 #ifdef MONO_ARCH_GSHARED_SUPPORTED
12562         acfg->num_trampolines [MONO_AOT_TRAMP_STATIC_RGCTX] = mono_aot_mode_is_full (&acfg->aot_opts) ? acfg->aot_opts.nrgctx_trampolines : 0;
12563 #endif
12564         acfg->num_trampolines [MONO_AOT_TRAMP_IMT] = mono_aot_mode_is_full (&acfg->aot_opts) ? acfg->aot_opts.nimt_trampolines : 0;
12565 #ifdef MONO_ARCH_GSHAREDVT_SUPPORTED
12566         if (acfg->opts & MONO_OPT_GSHAREDVT)
12567                 acfg->num_trampolines [MONO_AOT_TRAMP_GSHAREDVT_ARG] = mono_aot_mode_is_full (&acfg->aot_opts) ? acfg->aot_opts.ngsharedvt_arg_trampolines : 0;
12568 #endif
12569
12570         acfg->temp_prefix = mono_img_writer_get_temp_label_prefix (NULL);
12571
12572         arch_init (acfg);
12573
12574         if (mono_use_llvm || acfg->aot_opts.llvm) {
12575
12576                 /*
12577                  * Emit all LLVM code into a separate assembly/object file and link with it
12578                  * normally.
12579                  */
12580                 if (!acfg->aot_opts.asm_only && acfg->llvm_owriter_supported) {
12581                         acfg->llvm_owriter = TRUE;
12582                 } else if (acfg->aot_opts.llvm_outfile) {
12583                         int len = strlen (acfg->aot_opts.llvm_outfile);
12584
12585                         if (len >= 2 && acfg->aot_opts.llvm_outfile [len - 2] == '.' && acfg->aot_opts.llvm_outfile [len - 1] == 'o')
12586                                 acfg->llvm_owriter = TRUE;
12587                 }
12588         }
12589
12590         if (acfg->llvm && acfg->thumb_mixed)
12591                 acfg->flags = (MonoAotFileFlags)(acfg->flags | MONO_AOT_FILE_FLAG_LLVM_THUMB);
12592         if (acfg->aot_opts.llvm_only)
12593                 acfg->flags = (MonoAotFileFlags)(acfg->flags | MONO_AOT_FILE_FLAG_LLVM_ONLY);
12594
12595         acfg->assembly_name_sym = g_strdup (acfg->image->assembly->aname.name);
12596         /* Get rid of characters which cannot occur in symbols */
12597         for (p = acfg->assembly_name_sym; *p; ++p) {
12598                 if (!(isalnum (*p) || *p == '_'))
12599                         *p = '_';
12600         }
12601
12602         acfg->global_prefix = g_strdup_printf ("mono_aot_%s", acfg->assembly_name_sym);
12603         acfg->plt_symbol = g_strdup_printf ("%s_plt", acfg->global_prefix);
12604         acfg->got_symbol = g_strdup_printf ("%s_got", acfg->global_prefix);
12605         if (acfg->llvm) {
12606                 acfg->llvm_got_symbol = g_strdup_printf ("%s_llvm_got", acfg->global_prefix);
12607                 acfg->llvm_eh_frame_symbol = g_strdup_printf ("%s_eh_frame", acfg->global_prefix);
12608         }
12609
12610         acfg->method_index = 1;
12611
12612         if (mono_aot_mode_is_full (&acfg->aot_opts) || mono_aot_mode_is_hybrid (&acfg->aot_opts))
12613                 mono_set_partial_sharing_supported (TRUE);
12614
12615         if (!mono_aot_mode_is_interp (&acfg->aot_opts)) {
12616                 res = collect_methods (acfg);
12617
12618                 if (!res)
12619                         return 1;
12620         }
12621
12622         // If we're emitting all of the inflated methods into a dummy
12623         // Assembly, then after extra_methods is set up, we're done
12624         // in this function.
12625         if (astate && astate->emit_inflated_methods)
12626                 mono_add_deferred_extra_methods (acfg, astate);
12627
12628         {
12629                 GList *l;
12630
12631                 for (l = acfg->profile_data; l; l = l->next)
12632                         resolve_profile_data (acfg, (ProfileData*)l->data);
12633                 for (l = acfg->profile_data; l; l = l->next)
12634                         add_profile_instances (acfg, (ProfileData*)l->data);
12635         }
12636
12637         acfg->cfgs_size = acfg->methods->len + 32;
12638         acfg->cfgs = g_new0 (MonoCompile*, acfg->cfgs_size);
12639
12640         /* PLT offset 0 is reserved for the PLT trampoline */
12641         acfg->plt_offset = 1;
12642         add_preinit_got_slots (acfg);
12643
12644 #ifdef ENABLE_LLVM
12645         if (acfg->llvm) {
12646                 llvm_acfg = acfg;
12647                 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);
12648         }
12649 #endif
12650
12651         if (mono_aot_mode_is_interp (&acfg->aot_opts)) {
12652                 for (int i = 0; i < sizeof (interp_in_static_sigs) / sizeof (const char *); i++) {
12653                         MonoMethodSignature *sig = mono_create_icall_signature (interp_in_static_sigs [i]);
12654                         MonoMethod *wrapper = mini_get_interp_in_wrapper (sig);
12655                         add_method (acfg, wrapper);
12656                 }
12657         }
12658
12659         TV_GETTIME (atv);
12660
12661         compile_methods (acfg);
12662
12663         TV_GETTIME (btv);
12664
12665         acfg->stats.jit_time = TV_ELAPSED (atv, btv);
12666
12667         TV_GETTIME (atv);
12668
12669 #ifdef ENABLE_LLVM
12670         if (acfg->llvm) {
12671                 if (acfg->aot_opts.asm_only) {
12672                         if (acfg->aot_opts.outfile) {
12673                                 acfg->tmpfname = g_strdup_printf ("%s", acfg->aot_opts.outfile);
12674                                 acfg->tmpbasename = g_strdup (acfg->tmpfname);
12675                         } else {
12676                                 acfg->tmpbasename = g_strdup_printf ("%s", acfg->image->name);
12677                                 acfg->tmpfname = g_strdup_printf ("%s.s", acfg->tmpbasename);
12678                         }
12679                         g_assert (acfg->aot_opts.llvm_outfile);
12680                         acfg->llvm_sfile = g_strdup (acfg->aot_opts.llvm_outfile);
12681                         if (acfg->llvm_owriter)
12682                                 acfg->llvm_ofile = g_strdup (acfg->aot_opts.llvm_outfile);
12683                         else
12684                                 acfg->llvm_sfile = g_strdup (acfg->aot_opts.llvm_outfile);
12685                 } else {
12686                         acfg->tmpbasename = (strcmp (acfg->aot_opts.temp_path, "") == 0) ?
12687                                 g_strdup_printf ("%s", "temp") :
12688                                 g_build_filename (acfg->aot_opts.temp_path, "temp", NULL);
12689
12690                         acfg->tmpfname = g_strdup_printf ("%s.s", acfg->tmpbasename);
12691                         acfg->llvm_sfile = g_strdup_printf ("%s-llvm.s", acfg->tmpbasename);
12692                         acfg->llvm_ofile = g_strdup_printf ("%s-llvm.o", acfg->tmpbasename);
12693                 }
12694         }
12695 #endif
12696
12697         if (acfg->aot_opts.asm_only && !acfg->aot_opts.llvm_only) {
12698                 if (acfg->aot_opts.outfile)
12699                         acfg->tmpfname = g_strdup_printf ("%s", acfg->aot_opts.outfile);
12700                 else
12701                         acfg->tmpfname = g_strdup_printf ("%s.s", acfg->image->name);
12702                 acfg->fp = fopen (acfg->tmpfname, "w+");
12703         } else {
12704                 if (strcmp (acfg->aot_opts.temp_path, "") == 0) {
12705                         int i = g_file_open_tmp ("mono_aot_XXXXXX", &acfg->tmpfname, NULL);
12706                         acfg->fp = fdopen (i, "w+");
12707                 } else {
12708                         acfg->tmpbasename = g_build_filename (acfg->aot_opts.temp_path, "temp", NULL);
12709                         acfg->tmpfname = g_strdup_printf ("%s.s", acfg->tmpbasename);
12710                         acfg->fp = fopen (acfg->tmpfname, "w+");
12711                 }
12712         }
12713         if (acfg->fp == 0 && !acfg->aot_opts.llvm_only) {
12714                 aot_printerrf (acfg, "Unable to open file '%s': %s\n", acfg->tmpfname, strerror (errno));
12715                 return 1;
12716         }
12717         if (acfg->fp)
12718                 acfg->w = mono_img_writer_create (acfg->fp, FALSE);
12719
12720         tmp_outfile_name = NULL;
12721         outfile_name = NULL;
12722
12723         /* Compute symbols for methods */
12724         for (i = 0; i < acfg->nmethods; ++i) {
12725                 if (acfg->cfgs [i]) {
12726                         MonoCompile *cfg = acfg->cfgs [i];
12727                         int method_index = get_method_index (acfg, cfg->orig_method);
12728
12729                         if (COMPILE_LLVM (cfg))
12730                                 cfg->asm_symbol = g_strdup_printf ("%s%s", acfg->llvm_label_prefix, cfg->llvm_method_name);
12731                         else if (acfg->global_symbols || acfg->llvm)
12732                                 cfg->asm_symbol = get_debug_sym (cfg->orig_method, "", acfg->method_label_hash);
12733                         else
12734                                 cfg->asm_symbol = g_strdup_printf ("%s%sm_%x", acfg->temp_prefix, acfg->llvm_label_prefix, method_index);
12735                         cfg->asm_debug_symbol = cfg->asm_symbol;
12736                 }
12737         }
12738
12739         if (acfg->aot_opts.dwarf_debug && acfg->aot_opts.gnu_asm) {
12740                 /*
12741                  * CLANG supports GAS .file/.loc directives, so emit line number information this way
12742                  */
12743                 acfg->gas_line_numbers = TRUE;
12744         }
12745
12746 #ifdef EMIT_DWARF_INFO
12747         if ((!acfg->aot_opts.nodebug || acfg->aot_opts.dwarf_debug) && acfg->has_jitted_code) {
12748                 if (acfg->aot_opts.dwarf_debug && !mono_debug_enabled ()) {
12749                         aot_printerrf (acfg, "The dwarf AOT option requires the --debug option.\n");
12750                         return 1;
12751                 }
12752                 acfg->dwarf = mono_dwarf_writer_create (acfg->w, NULL, 0, !acfg->gas_line_numbers);
12753         }
12754 #endif /* EMIT_DWARF_INFO */
12755
12756         if (acfg->w)
12757                 mono_img_writer_emit_start (acfg->w);
12758
12759         if (acfg->dwarf)
12760                 mono_dwarf_writer_emit_base_info (acfg->dwarf, g_path_get_basename (acfg->image->name), mono_unwind_get_cie_program ());
12761
12762         emit_code (acfg);
12763         if (acfg->aot_opts.dedup)
12764                 mono_flush_method_cache (acfg);
12765         if (acfg->aot_opts.dedup || acfg->dedup_emit_mode)
12766                 mono_dedup_log_stats (acfg);
12767
12768         emit_info (acfg);
12769
12770         emit_extra_methods (acfg);
12771
12772         if (acfg->aot_opts.dedup_include && !is_dedup_dummy)
12773                 return 0;
12774
12775         emit_trampolines (acfg);
12776
12777         emit_class_name_table (acfg);
12778
12779         emit_got_info (acfg, FALSE);
12780         if (acfg->llvm)
12781                 emit_got_info (acfg, TRUE);
12782
12783         emit_exception_info (acfg);
12784
12785         emit_unwind_info (acfg);
12786
12787         emit_class_info (acfg);
12788
12789         emit_plt (acfg);
12790
12791         emit_image_table (acfg);
12792
12793         emit_weak_field_indexes (acfg);
12794
12795         emit_got (acfg);
12796
12797         {
12798                 /*
12799                  * The managed allocators are GC specific, so can't use an AOT image created by one GC
12800                  * in another.
12801                  */
12802                 const char *gc_name = mono_gc_get_gc_name ();
12803                 acfg->gc_name_offset = add_to_blob (acfg, (guint8*)gc_name, strlen (gc_name) + 1);
12804         }
12805
12806         emit_blob (acfg);
12807
12808         emit_objc_selectors (acfg);
12809
12810         emit_globals (acfg);
12811
12812         emit_file_info (acfg);
12813
12814         emit_library_info (acfg);
12815
12816         if (acfg->dwarf) {
12817                 emit_dwarf_info (acfg);
12818                 mono_dwarf_writer_close (acfg->dwarf);
12819         } else {
12820                 if (!acfg->aot_opts.nodebug)
12821                         emit_codeview_info (acfg);
12822         }
12823
12824         emit_mem_end (acfg);
12825
12826         if (acfg->need_pt_gnu_stack) {
12827                 /* This is required so the .so doesn't have an executable stack */
12828                 /* The bin writer already emits this */
12829                 fprintf (acfg->fp, "\n.section  .note.GNU-stack,\"\",@progbits\n");
12830         }
12831
12832         if (acfg->aot_opts.data_outfile)
12833                 fclose (acfg->data_outfile);
12834
12835 #ifdef ENABLE_LLVM
12836         if (acfg->llvm) {
12837                 gboolean res;
12838
12839                 res = emit_llvm_file (acfg);
12840                 if (!res)
12841                         return 1;
12842         }
12843 #endif
12844
12845         TV_GETTIME (btv);
12846
12847         acfg->stats.gen_time = TV_ELAPSED (atv, btv);
12848
12849         if (acfg->llvm)
12850                 sprintf (llvm_stats_msg, ", LLVM: %d (%d%%)", acfg->stats.llvm_count, acfg->stats.mcount ? (acfg->stats.llvm_count * 100) / acfg->stats.mcount : 100);
12851         else
12852                 strcpy (llvm_stats_msg, "");
12853
12854         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;
12855
12856         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",
12857                                 (int)acfg->stats.code_size, (int)(acfg->stats.code_size * 100 / all_sizes),
12858                                 (int)acfg->stats.info_size, (int)(acfg->stats.info_size * 100 / all_sizes),
12859                                 (int)acfg->stats.ex_info_size, (int)(acfg->stats.ex_info_size * 100 / all_sizes),
12860                                 (int)acfg->stats.unwind_info_size, (int)(acfg->stats.unwind_info_size * 100 / all_sizes),
12861                                 (int)acfg->stats.class_info_size, (int)(acfg->stats.class_info_size * 100 / all_sizes),
12862                                 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,
12863                                 (int)acfg->stats.got_info_size, (int)(acfg->stats.got_info_size * 100 / all_sizes),
12864                                 (int)acfg->stats.offsets_size, (int)(acfg->stats.offsets_size * 100 / all_sizes),
12865                         (int)(acfg->got_offset * sizeof (gpointer)));
12866         aot_printf (acfg, "Compiled: %d/%d (%d%%)%s, No GOT slots: %d (%d%%), Direct calls: %d (%d%%)\n",
12867                         acfg->stats.ccount, acfg->stats.mcount, acfg->stats.mcount ? (acfg->stats.ccount * 100) / acfg->stats.mcount : 100,
12868                         llvm_stats_msg,
12869                         acfg->stats.methods_without_got_slots, acfg->stats.mcount ? (acfg->stats.methods_without_got_slots * 100) / acfg->stats.mcount : 100,
12870                         acfg->stats.direct_calls, acfg->stats.all_calls ? (acfg->stats.direct_calls * 100) / acfg->stats.all_calls : 100);
12871         if (acfg->stats.genericcount)
12872                 aot_printf (acfg, "%d methods are generic (%d%%)\n", acfg->stats.genericcount, acfg->stats.mcount ? (acfg->stats.genericcount * 100) / acfg->stats.mcount : 100);
12873         if (acfg->stats.abscount)
12874                 aot_printf (acfg, "%d methods contain absolute addresses (%d%%)\n", acfg->stats.abscount, acfg->stats.mcount ? (acfg->stats.abscount * 100) / acfg->stats.mcount : 100);
12875         if (acfg->stats.lmfcount)
12876                 aot_printf (acfg, "%d methods contain lmf pointers (%d%%)\n", acfg->stats.lmfcount, acfg->stats.mcount ? (acfg->stats.lmfcount * 100) / acfg->stats.mcount : 100);
12877         if (acfg->stats.ocount)
12878                 aot_printf (acfg, "%d methods have other problems (%d%%)\n", acfg->stats.ocount, acfg->stats.mcount ? (acfg->stats.ocount * 100) / acfg->stats.mcount : 100);
12879
12880         TV_GETTIME (atv);
12881         if (acfg->w) {
12882                 res = mono_img_writer_emit_writeout (acfg->w);
12883                 if (res != 0) {
12884                         acfg_free (acfg);
12885                         return res;
12886                 }
12887                 res = compile_asm (acfg);
12888                 if (res != 0) {
12889                         acfg_free (acfg);
12890                         return res;
12891                 }
12892         }
12893         TV_GETTIME (btv);
12894         acfg->stats.link_time = TV_ELAPSED (atv, btv);
12895
12896         if (acfg->aot_opts.stats) {
12897                 int i;
12898
12899                 aot_printf (acfg, "GOT slot distribution:\n");
12900                 for (i = 0; i < MONO_PATCH_INFO_NUM; ++i)
12901                         if (acfg->stats.got_slot_types [i])
12902                                 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]);
12903                 aot_printf (acfg, "\nMethod stats:\n");
12904                 aot_printf (acfg, "\tNormal:    %d\n", acfg->stats.method_categories [METHOD_CAT_NORMAL]);
12905                 aot_printf (acfg, "\tInstance:  %d\n", acfg->stats.method_categories [METHOD_CAT_INST]);
12906                 aot_printf (acfg, "\tGSharedvt: %d\n", acfg->stats.method_categories [METHOD_CAT_GSHAREDVT]);
12907                 aot_printf (acfg, "\tWrapper:   %d\n", acfg->stats.method_categories [METHOD_CAT_WRAPPER]);
12908         }
12909
12910         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);
12911
12912         if (acfg->aot_opts.dump_json)
12913                 aot_dump (acfg);
12914
12915         acfg_free (acfg);
12916
12917         return 0;
12918 }
12919
12920 #else
12921
12922 /* AOT disabled */
12923
12924 void*
12925 mono_aot_readonly_field_override (MonoClassField *field)
12926 {
12927         return NULL;
12928 }
12929
12930 int
12931 mono_compile_assembly (MonoAssembly *ass, guint32 opts, const char *aot_options, gpointer **aot_state)
12932 {
12933         return 0;
12934 }
12935
12936 gboolean
12937 mono_aot_is_shared_got_offset (int offset)
12938 {
12939         return FALSE;
12940 }
12941
12942 int
12943 mono_compile_deferred_assemblies (guint32 opts, const char *aot_options, gpointer **aot_state)
12944 {
12945         g_assert_not_reached ();
12946         return 0;
12947 }
12948
12949 #endif