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[MSBuild] Fixed a test that failed when the GAC wasn't available
[mono-project.git] / mono / mini / aot-compiler.c
blob3c805ddae8cadf198c5f2b9d8ad9c3d39d0ec1b3
1 /*
2 * aot-compiler.c: mono Ahead of Time compiler
3 *
4 * Author:
5 * Dietmar Maurer (dietmar@ximian.com)
6 * Zoltan Varga (vargaz@gmail.com)
7 *
8 * (C) 2002 Ximian, Inc.
9 * Copyright 2003-2011 Novell, Inc
10 * Copyright 2011 Xamarin Inc (http://www.xamarin.com)
11 */
12
13 /* Remaining AOT-only work:
14 * - optimize the trampolines, generate more code in the arch files.
15 * - make things more consistent with how elf works, for example, use ELF
16 * relocations.
17 * Remaining generics sharing work:
18 * - optimize the size of the data which is encoded.
19 * - optimize the runtime loading of data:
20 * - the trampoline code calls mono_jit_info_table_find () to find the rgctx,
21 * which loads the debugging+exception handling info for the method. This is a
22 * huge waste of time and code, since the rgctx structure is currently empty.
23 */
24 #include "config.h"
25 #include <sys/types.h>
26 #ifdef HAVE_UNISTD_H
27 #include <unistd.h>
28 #endif
29 #ifdef HAVE_STDINT_H
30 #include <stdint.h>
31 #endif
32 #include <fcntl.h>
33 #include <ctype.h>
34 #include <string.h>
35 #ifndef HOST_WIN32
36 #include <sys/time.h>
37 #else
38 #include <winsock2.h>
39 #include <windows.h>
40 #endif
41
42 #include <errno.h>
43 #include <sys/stat.h>
44
45
46 #include <mono/metadata/abi-details.h>
47 #include <mono/metadata/tabledefs.h>
48 #include <mono/metadata/class.h>
49 #include <mono/metadata/object.h>
50 #include <mono/metadata/tokentype.h>
51 #include <mono/metadata/appdomain.h>
52 #include <mono/metadata/debug-helpers.h>
53 #include <mono/metadata/assembly.h>
54 #include <mono/metadata/metadata-internals.h>
55 #include <mono/metadata/marshal.h>
56 #include <mono/metadata/gc-internal.h>
57 #include <mono/metadata/monitor.h>
58 #include <mono/metadata/mempool-internals.h>
59 #include <mono/metadata/mono-endian.h>
60 #include <mono/metadata/threads-types.h>
61 #include <mono/utils/mono-logger-internal.h>
62 #include <mono/utils/mono-compiler.h>
63 #include <mono/utils/mono-time.h>
64 #include <mono/utils/mono-mmap.h>
65
66 #include "mini.h"
67 #include "image-writer.h"
68 #include "dwarfwriter.h"
69 #include "mini-gc.h"
70
71 #if !defined(DISABLE_AOT) && !defined(DISABLE_JIT)
72
73 #if defined(__linux__) || defined(__native_client_codegen__)
74 #define RODATA_SECT ".rodata"
75 #elif defined(TARGET_MACH)
76 #define RODATA_SECT ".section __TEXT, __const"
77 #else
78 #define RODATA_SECT ".text"
79 #endif
80
81 #define TV_DECLARE(name) gint64 name
82 #define TV_GETTIME(tv) tv = mono_100ns_ticks ()
83 #define TV_ELAPSED(start,end) (((end) - (start)) / 10)
84
85 #ifdef TARGET_WIN32
86 #define SHARED_EXT ".dll"
87 #elif defined(__ppc__) && defined(TARGET_MACH)
88 #define SHARED_EXT ".dylib"
89 #elif defined(TARGET_MACH) && defined(TARGET_X86) && !defined(__native_client_codegen__)
90 #define SHARED_EXT ".dylib"
91 #elif defined(TARGET_MACH) && defined(TARGET_AMD64) && !defined(__native_client_codegen__)
92 #define SHARED_EXT ".dylib"
93 #else
94 #define SHARED_EXT ".so"
95 #endif
96
97 #define ALIGN_TO(val,align) ((((guint64)val) + ((align) - 1)) & ~((align) - 1))
98 #define ALIGN_PTR_TO(ptr,align) (gpointer)((((gssize)(ptr)) + (align - 1)) & (~(align - 1)))
99 #define ROUND_DOWN(VALUE,SIZE) ((VALUE) & ~((SIZE) - 1))
100
101 /* predefined values for static readonly fields without needed to run the .cctor */
102 typedef struct _ReadOnlyValue ReadOnlyValue;
103 struct _ReadOnlyValue {
104 ReadOnlyValue *next;
105 char *name;
106 int type; /* to be used later for typechecking to prevent user errors */
107 union {
108 guint8 i1;
109 guint16 i2;
110 guint32 i4;
111 guint64 i8;
112 gpointer ptr;
113 } value;
114 };
115 static ReadOnlyValue *readonly_values;
116
117 typedef struct MonoAotOptions {
118 char *outfile;
119 gboolean save_temps;
120 gboolean write_symbols;
121 gboolean metadata_only;
122 gboolean bind_to_runtime_version;
123 gboolean full_aot;
124 gboolean no_dlsym;
125 gboolean static_link;
126 gboolean asm_only;
127 gboolean asm_writer;
128 gboolean nodebug;
129 gboolean dwarf_debug;
130 gboolean soft_debug;
131 gboolean log_generics;
132 gboolean log_instances;
133 gboolean direct_pinvoke;
134 gboolean direct_icalls;
135 gboolean no_direct_calls;
136 gboolean use_trampolines_page;
137 gboolean no_instances;
138 gboolean gnu_asm;
139 int nthreads;
140 int ntrampolines;
141 int nrgctx_trampolines;
142 int nimt_trampolines;
143 int ngsharedvt_arg_trampolines;
144 int nrgctx_fetch_trampolines;
145 gboolean print_skipped_methods;
146 gboolean stats;
147 char *tool_prefix;
148 gboolean autoreg;
149 char *mtriple;
150 char *llvm_path;
151 char *instances_logfile_path;
152 } MonoAotOptions;
153
154 typedef struct MonoAotStats {
155 int ccount, mcount, lmfcount, abscount, gcount, ocount, genericcount;
156 int code_size, info_size, ex_info_size, unwind_info_size, got_size, class_info_size, got_info_size, plt_size;
157 int methods_without_got_slots, direct_calls, all_calls, llvm_count;
158 int got_slots, offsets_size;
159 int got_slot_types [MONO_PATCH_INFO_NONE];
160 int got_slot_info_sizes [MONO_PATCH_INFO_NONE];
161 int jit_time, gen_time, link_time;
162 } MonoAotStats;
163
164 typedef struct MonoAotCompile {
165 MonoImage *image;
166 GPtrArray *methods;
167 GHashTable *method_indexes;
168 GHashTable *method_depth;
169 MonoCompile **cfgs;
170 int cfgs_size;
171 GHashTable **patch_to_plt_entry;
172 GHashTable *plt_offset_to_entry;
173 GHashTable *patch_to_got_offset;
174 GHashTable **patch_to_got_offset_by_type;
175 GPtrArray *got_patches;
176 GHashTable *image_hash;
177 GHashTable *method_to_cfg;
178 GHashTable *token_info_hash;
179 GHashTable *method_to_pinvoke_import;
180 GPtrArray *extra_methods;
181 GPtrArray *image_table;
182 GPtrArray *globals;
183 GPtrArray *method_order;
184 GHashTable *export_names;
185 /* Maps MonoClass* -> blob offset */
186 GHashTable *klass_blob_hash;
187 /* Maps MonoMethod* -> blob offset */
188 GHashTable *method_blob_hash;
189 guint32 *plt_got_info_offsets;
190 guint32 got_offset, plt_offset, plt_got_offset_base;
191 guint32 final_got_size;
192 /* Number of GOT entries reserved for trampolines */
193 guint32 num_trampoline_got_entries;
194 guint32 tramp_page_size;
195
196 guint32 num_trampolines [MONO_AOT_TRAMP_NUM];
197 guint32 trampoline_got_offset_base [MONO_AOT_TRAMP_NUM];
198 guint32 trampoline_size [MONO_AOT_TRAMP_NUM];
199 guint32 tramp_page_code_offsets [MONO_AOT_TRAMP_NUM];
200
201 MonoAotOptions aot_opts;
202 guint32 nmethods;
203 guint32 opts;
204 guint32 simd_opts;
205 MonoMemPool *mempool;
206 MonoAotStats stats;
207 int method_index;
208 char *static_linking_symbol;
209 mono_mutex_t mutex;
210 gboolean use_bin_writer;
211 gboolean gas_line_numbers;
212 MonoImageWriter *w;
213 MonoDwarfWriter *dwarf;
214 FILE *fp;
215 char *tmpbasename;
216 char *tmpfname;
217 GSList *cie_program;
218 GHashTable *unwind_info_offsets;
219 GPtrArray *unwind_ops;
220 guint32 unwind_info_offset;
221 char *got_symbol_base;
222 char *got_symbol;
223 char *plt_symbol;
224 char *methods_symbol;
225 GHashTable *method_label_hash;
226 const char *temp_prefix;
227 const char *user_symbol_prefix;
228 const char *llvm_label_prefix;
229 const char *inst_directive;
230 guint32 label_generator;
231 gboolean llvm;
232 MonoAotFileFlags flags;
233 MonoDynamicStream blob;
234 MonoClass **typespec_classes;
235 GString *llc_args;
236 GString *as_args;
237 char *assembly_name_sym;
238 GHashTable *plt_entry_debug_sym_cache;
239 gboolean thumb_mixed, need_no_dead_strip, need_pt_gnu_stack;
240 GHashTable *ginst_hash;
241 GHashTable *dwarf_ln_filenames;
242 gboolean global_symbols;
243 gboolean direct_method_addresses;
244 int objc_selector_index, objc_selector_index_2;
245 GPtrArray *objc_selectors;
246 GHashTable *objc_selector_to_index;
247 FILE *instances_logfile;
248 } MonoAotCompile;
249
250 typedef struct {
251 int plt_offset;
252 char *symbol, *llvm_symbol, *debug_sym;
253 MonoJumpInfo *ji;
254 gboolean jit_used, llvm_used;
255 } MonoPltEntry;
256
257 #define mono_acfg_lock(acfg) mono_mutex_lock (&((acfg)->mutex))
258 #define mono_acfg_unlock(acfg) mono_mutex_unlock (&((acfg)->mutex))
259
260 /* This points to the current acfg in LLVM mode */
261 static MonoAotCompile *llvm_acfg;
262
263 #ifdef HAVE_ARRAY_ELEM_INIT
264 #define MSGSTRFIELD(line) MSGSTRFIELD1(line)
265 #define MSGSTRFIELD1(line) str##line
266 static const struct msgstr_t {
267 #define PATCH_INFO(a,b) char MSGSTRFIELD(__LINE__) [sizeof (b)];
268 #include "patch-info.h"
269 #undef PATCH_INFO
270 } opstr = {
271 #define PATCH_INFO(a,b) b,
272 #include "patch-info.h"
273 #undef PATCH_INFO
274 };
275 static const gint16 opidx [] = {
276 #define PATCH_INFO(a,b) [MONO_PATCH_INFO_ ## a] = offsetof (struct msgstr_t, MSGSTRFIELD(__LINE__)),
277 #include "patch-info.h"
278 #undef PATCH_INFO
279 };
280
281 static G_GNUC_UNUSED const char*
282 get_patch_name (int info)
283 {
284 return (const char*)&opstr + opidx [info];
285 }
286
287 #else
288 #define PATCH_INFO(a,b) b,
289 static const char* const
290 patch_types [MONO_PATCH_INFO_NUM + 1] = {
291 #include "patch-info.h"
292 NULL
293 };
294
295 static G_GNUC_UNUSED const char*
296 get_patch_name (int info)
297 {
298 return patch_types [info];
299 }
300
301 #endif
302
303 static char*
304 get_plt_entry_debug_sym (MonoAotCompile *acfg, MonoJumpInfo *ji, GHashTable *cache);
305
306 /* Wrappers around the image writer functions */
307
308 static inline void
309 emit_section_change (MonoAotCompile *acfg, const char *section_name, int subsection_index)
310 {
311 img_writer_emit_section_change (acfg->w, section_name, subsection_index);
312 }
313
314 static inline void
315 emit_push_section (MonoAotCompile *acfg, const char *section_name, int subsection)
316 {
317 img_writer_emit_push_section (acfg->w, section_name, subsection);
318 }
319
320 static inline void
321 emit_pop_section (MonoAotCompile *acfg)
322 {
323 img_writer_emit_pop_section (acfg->w);
324 }
325
326 static inline void
327 emit_local_symbol (MonoAotCompile *acfg, const char *name, const char *end_label, gboolean func)
328 {
329 img_writer_emit_local_symbol (acfg->w, name, end_label, func);
330 }
331
332 static inline void
333 emit_label (MonoAotCompile *acfg, const char *name)
334 {
335 img_writer_emit_label (acfg->w, name);
336 }
337
338 static inline void
339 emit_bytes (MonoAotCompile *acfg, const guint8* buf, int size)
340 {
341 img_writer_emit_bytes (acfg->w, buf, size);
342 }
343
344 static inline void
345 emit_string (MonoAotCompile *acfg, const char *value)
346 {
347 img_writer_emit_string (acfg->w, value);
348 }
349
350 static inline void
351 emit_line (MonoAotCompile *acfg)
352 {
353 img_writer_emit_line (acfg->w);
354 }
355
356 static inline void
357 emit_alignment (MonoAotCompile *acfg, int size)
358 {
359 img_writer_emit_alignment (acfg->w, size);
360 }
361
362 static inline void
363 emit_pointer_unaligned (MonoAotCompile *acfg, const char *target)
364 {
365 img_writer_emit_pointer_unaligned (acfg->w, target);
366 }
367
368 static inline void
369 emit_pointer (MonoAotCompile *acfg, const char *target)
370 {
371 img_writer_emit_pointer (acfg->w, target);
372 }
373
374 static inline void
375 emit_pointer_2 (MonoAotCompile *acfg, const char *prefix, const char *target)
376 {
377 if (prefix [0] != '\0') {
378 char *s = g_strdup_printf ("%s%s", prefix, target);
379 img_writer_emit_pointer (acfg->w, s);
380 g_free (s);
381 } else {
382 img_writer_emit_pointer (acfg->w, target);
383 }
384 }
385
386 static inline void
387 emit_int16 (MonoAotCompile *acfg, int value)
388 {
389 img_writer_emit_int16 (acfg->w, value);
390 }
391
392 static inline void
393 emit_int32 (MonoAotCompile *acfg, int value)
394 {
395 img_writer_emit_int32 (acfg->w, value);
396 }
397
398 static inline void
399 emit_symbol_diff (MonoAotCompile *acfg, const char *end, const char* start, int offset)
400 {
401 img_writer_emit_symbol_diff (acfg->w, end, start, offset);
402 }
403
404 static inline void
405 emit_zero_bytes (MonoAotCompile *acfg, int num)
406 {
407 img_writer_emit_zero_bytes (acfg->w, num);
408 }
409
410 static inline void
411 emit_byte (MonoAotCompile *acfg, guint8 val)
412 {
413 img_writer_emit_byte (acfg->w, val);
414 }
415
416 #ifdef __native_client_codegen__
417 static inline void
418 emit_nacl_call_alignment (MonoAotCompile *acfg)
419 {
420 img_writer_emit_nacl_call_alignment (acfg->w);
421 }
422 #endif
423
424 static G_GNUC_UNUSED void
425 emit_global_inner (MonoAotCompile *acfg, const char *name, gboolean func)
426 {
427 img_writer_emit_global (acfg->w, name, func);
428 }
429
430 static void
431 emit_global (MonoAotCompile *acfg, const char *name, gboolean func)
432 {
433 if (acfg->aot_opts.no_dlsym) {
434 g_ptr_array_add (acfg->globals, g_strdup (name));
435 img_writer_emit_local_symbol (acfg->w, name, NULL, func);
436 } else {
437 img_writer_emit_global (acfg->w, name, func);
438 }
439 }
440
441 static void
442 emit_symbol_size (MonoAotCompile *acfg, const char *name, const char *end_label)
443 {
444 img_writer_emit_symbol_size (acfg->w, name, end_label);
445 }
446
447 static void
448 emit_string_symbol (MonoAotCompile *acfg, const char *name, const char *value)
449 {
450 img_writer_emit_section_change (acfg->w, RODATA_SECT, 1);
451 #ifdef TARGET_MACH
452 /* On apple, all symbols need to be aligned to avoid warnings from ld */
453 emit_alignment (acfg, 4);
454 #endif
455 img_writer_emit_label (acfg->w, name);
456 img_writer_emit_string (acfg->w, value);
457 }
458
459 static G_GNUC_UNUSED void
460 emit_uleb128 (MonoAotCompile *acfg, guint32 value)
461 {
462 do {
463 guint8 b = value & 0x7f;
464 value >>= 7;
465 if (value != 0) /* more bytes to come */
466 b |= 0x80;
467 emit_byte (acfg, b);
468 } while (value);
469 }
470
471 static G_GNUC_UNUSED void
472 emit_sleb128 (MonoAotCompile *acfg, gint64 value)
473 {
474 gboolean more = 1;
475 gboolean negative = (value < 0);
476 guint32 size = 64;
477 guint8 byte;
478
479 while (more) {
480 byte = value & 0x7f;
481 value >>= 7;
482 /* the following is unnecessary if the
483 * implementation of >>= uses an arithmetic rather
484 * than logical shift for a signed left operand
485 */
486 if (negative)
487 /* sign extend */
488 value |= - ((gint64)1 <<(size - 7));
489 /* sign bit of byte is second high order bit (0x40) */
490 if ((value == 0 && !(byte & 0x40)) ||
491 (value == -1 && (byte & 0x40)))
492 more = 0;
493 else
494 byte |= 0x80;
495 emit_byte (acfg, byte);
496 }
497 }
498
499 static G_GNUC_UNUSED void
500 encode_uleb128 (guint32 value, guint8 *buf, guint8 **endbuf)
501 {
502 guint8 *p = buf;
503
504 do {
505 guint8 b = value & 0x7f;
506 value >>= 7;
507 if (value != 0) /* more bytes to come */
508 b |= 0x80;
509 *p ++ = b;
510 } while (value);
511
512 *endbuf = p;
513 }
514
515 static G_GNUC_UNUSED void
516 encode_sleb128 (gint32 value, guint8 *buf, guint8 **endbuf)
517 {
518 gboolean more = 1;
519 gboolean negative = (value < 0);
520 guint32 size = 32;
521 guint8 byte;
522 guint8 *p = buf;
523
524 while (more) {
525 byte = value & 0x7f;
526 value >>= 7;
527 /* the following is unnecessary if the
528 * implementation of >>= uses an arithmetic rather
529 * than logical shift for a signed left operand
530 */
531 if (negative)
532 /* sign extend */
533 value |= - (1 <<(size - 7));
534 /* sign bit of byte is second high order bit (0x40) */
535 if ((value == 0 && !(byte & 0x40)) ||
536 (value == -1 && (byte & 0x40)))
537 more = 0;
538 else
539 byte |= 0x80;
540 *p ++= byte;
541 }
542
543 *endbuf = p;
544 }
545
546 static void
547 emit_unset_mode (MonoAotCompile *acfg)
548 {
549 img_writer_emit_unset_mode (acfg->w);
550 }
551
552 static G_GNUC_UNUSED void
553 emit_set_thumb_mode (MonoAotCompile *acfg)
554 {
555 emit_unset_mode (acfg);
556 fprintf (acfg->fp, ".code 16\n");
557 }
558
559 static G_GNUC_UNUSED void
560 emit_set_arm_mode (MonoAotCompile *acfg)
561 {
562 emit_unset_mode (acfg);
563 fprintf (acfg->fp, ".code 32\n");
564 }
565
566 static inline void
567 emit_code_bytes (MonoAotCompile *acfg, const guint8* buf, int size)
568 {
569 #ifdef TARGET_ARM64
570 int i;
571
572 g_assert (size % 4 == 0);
573 emit_unset_mode (acfg);
574 for (i = 0; i < size; i += 4)
575 fprintf (acfg->fp, "%s 0x%x\n", acfg->inst_directive, *(guint32*)(buf + i));
576 #else
577 emit_bytes (acfg, buf, size);
578 #endif
579 }
580
581 /* ARCHITECTURE SPECIFIC CODE */
582
583 #if defined(TARGET_X86) || defined(TARGET_AMD64) || defined(TARGET_ARM) || defined(TARGET_POWERPC)
584 #define EMIT_DWARF_INFO 1
585 #endif
586
587 #if defined(TARGET_ARM)
588 #define AOT_FUNC_ALIGNMENT 4
589 #else
590 #define AOT_FUNC_ALIGNMENT 16
591 #endif
592 #if (defined(TARGET_X86) || defined(TARGET_AMD64)) && defined(__native_client_codegen__)
593 #undef AOT_FUNC_ALIGNMENT
594 #define AOT_FUNC_ALIGNMENT 32
595 #endif
596
597 #if defined(TARGET_POWERPC64) && !defined(__mono_ilp32__)
598 #define PPC_LD_OP "ld"
599 #define PPC_LDX_OP "ldx"
600 #else
601 #define PPC_LD_OP "lwz"
602 #define PPC_LDX_OP "lwzx"
603 #endif
604
605 #ifdef TARGET_AMD64
606 #define AOT_TARGET_STR "AMD64"
607 #endif
608
609 #ifdef TARGET_ARM
610 #ifdef TARGET_MACH
611 #define AOT_TARGET_STR "ARM (MACH)"
612 #else
613 #define AOT_TARGET_STR "ARM (!MACH)"
614 #endif
615 #endif
616
617 #ifdef TARGET_ARM64
618 #ifdef TARGET_MACH
619 #define AOT_TARGET_STR "ARM64 (MACH)"
620 #else
621 #define AOT_TARGET_STR "ARM64 (!MACH)"
622 #endif
623 #endif
624
625 #ifdef TARGET_POWERPC64
626 #ifdef __mono_ilp32__
627 #define AOT_TARGET_STR "POWERPC64 (mono ilp32)"
628 #else
629 #define AOT_TARGET_STR "POWERPC64 (!mono ilp32)"
630 #endif
631 #else
632 #ifdef TARGET_POWERPC
633 #ifdef __mono_ilp32__
634 #define AOT_TARGET_STR "POWERPC (mono ilp32)"
635 #else
636 #define AOT_TARGET_STR "POWERPC (!mono ilp32)"
637 #endif
638 #endif
639 #endif
640
641 #ifdef TARGET_X86
642 #ifdef TARGET_WIN32
643 #define AOT_TARGET_STR "X86 (WIN32)"
644 #elif defined(__native_client_codegen__)
645 #define AOT_TARGET_STR "X86 (native client codegen)"
646 #else
647 #define AOT_TARGET_STR "X86 (!native client codegen)"
648 #endif
649 #endif
650
651 #ifndef AOT_TARGET_STR
652 #define AOT_TARGET_STR ""
653 #endif
654
655 static void
656 arch_init (MonoAotCompile *acfg)
657 {
658 acfg->llc_args = g_string_new ("");
659 acfg->as_args = g_string_new ("");
660
661 /*
662 * The prefix LLVM likes to put in front of symbol names on darwin.
663 * The mach-os specs require this for globals, but LLVM puts them in front of all
664 * symbols. We need to handle this, since we need to refer to LLVM generated
665 * symbols.
666 */
667 acfg->llvm_label_prefix = "";
668 acfg->user_symbol_prefix = "";
669
670 #if defined(TARGET_AMD64)
671 g_string_append (acfg->llc_args, " -march=x86-64 -mattr=sse4.1");
672 #endif
673
674 #ifdef TARGET_ARM
675 if (acfg->aot_opts.mtriple && strstr (acfg->aot_opts.mtriple, "darwin")) {
676 g_string_append (acfg->llc_args, "-mattr=+v6");
677 } else {
678 #ifdef ARM_FPU_VFP
679 g_string_append (acfg->llc_args, " -mattr=+vfp2,-neon,+d16");
680 g_string_append (acfg->as_args, " -mfpu=vfp3");
681 #else
682 g_string_append (acfg->llc_args, " -soft-float");
683 #endif
684 }
685 if (acfg->aot_opts.mtriple && strstr (acfg->aot_opts.mtriple, "thumb"))
686 acfg->thumb_mixed = TRUE;
687
688 if (acfg->aot_opts.mtriple)
689 mono_arch_set_target (acfg->aot_opts.mtriple);
690 #endif
691
692 #ifdef TARGET_ARM64
693 acfg->inst_directive = ".inst";
694 if (acfg->aot_opts.mtriple)
695 mono_arch_set_target (acfg->aot_opts.mtriple);
696 #endif
697
698 #ifdef TARGET_MACH
699 acfg->user_symbol_prefix = "_";
700 acfg->llvm_label_prefix = "_";
701 acfg->inst_directive = ".word";
702 acfg->need_no_dead_strip = TRUE;
703 acfg->aot_opts.gnu_asm = TRUE;
704 #endif
705
706 #if defined(__linux__) && !defined(TARGET_ARM)
707 acfg->need_pt_gnu_stack = TRUE;
708 #endif
709
710 #ifdef MONOTOUCH
711 acfg->direct_method_addresses = TRUE;
712 acfg->global_symbols = TRUE;
713 #endif
714 }
715
716 #ifdef TARGET_ARM64
717
718 #include "../../../mono-extensions/mono/mini/aot-compiler-arm64.c"
719
720 #endif
721
722 #ifdef MONO_ARCH_AOT_SUPPORTED
723 /*
724 * arch_emit_direct_call:
725 *
726 * Emit a direct call to the symbol TARGET. CALL_SIZE is set to the size of the
727 * calling code.
728 */
729 static void
730 arch_emit_direct_call (MonoAotCompile *acfg, const char *target, gboolean external, gboolean thumb, MonoJumpInfo *ji, int *call_size)
731 {
732 #if defined(TARGET_X86) || defined(TARGET_AMD64)
733 /* Need to make sure this is exactly 5 bytes long */
734 if (external && !acfg->use_bin_writer) {
735 emit_unset_mode (acfg);
736 fprintf (acfg->fp, "call %s\n", target);
737 } else {
738 emit_byte (acfg, '\xe8');
739 emit_symbol_diff (acfg, target, ".", -4);
740 }
741 *call_size = 5;
742 #elif defined(TARGET_ARM)
743 if (acfg->use_bin_writer) {
744 guint8 buf [4];
745 guint8 *code;
746
747 code = buf;
748 ARM_BL (code, 0);
749
750 img_writer_emit_reloc (acfg->w, R_ARM_CALL, target, -8);
751 emit_bytes (acfg, buf, 4);
752 } else {
753 emit_unset_mode (acfg);
754 if (thumb)
755 fprintf (acfg->fp, "blx %s\n", target);
756 else
757 fprintf (acfg->fp, "bl %s\n", target);
758 }
759 *call_size = 4;
760 #elif defined(TARGET_ARM64)
761 arm64_emit_direct_call (acfg, target, external, thumb, ji, call_size);
762 #elif defined(TARGET_POWERPC)
763 if (acfg->use_bin_writer) {
764 g_assert_not_reached ();
765 } else {
766 emit_unset_mode (acfg);
767 fprintf (acfg->fp, "bl %s\n", target);
768 *call_size = 4;
769 }
770 #else
771 g_assert_not_reached ();
772 #endif
773 }
774 #endif
775
776 /*
777 * PPC32 design:
778 * - we use an approach similar to the x86 abi: reserve a register (r30) to hold
779 * the GOT pointer.
780 * - The full-aot trampolines need access to the GOT of mscorlib, so we store
781 * in in the 2. slot of every GOT, and require every method to place the GOT
782 * address in r30, even when it doesn't access the GOT otherwise. This way,
783 * the trampolines can compute the mscorlib GOT address by loading 4(r30).
784 */
785
786 /*
787 * PPC64 design:
788 * PPC64 uses function descriptors which greatly complicate all code, since
789 * these are used very inconsistently in the runtime. Some functions like
790 * mono_compile_method () return ftn descriptors, while others like the
791 * trampoline creation functions do not.
792 * We assume that all GOT slots contain function descriptors, and create
793 * descriptors in aot-runtime.c when needed.
794 * The ppc64 abi uses r2 to hold the address of the TOC/GOT, which is loaded
795 * from function descriptors, we could do the same, but it would require
796 * rewriting all the ppc/aot code to handle function descriptors properly.
797 * So instead, we use the same approach as on PPC32.
798 * This is a horrible mess, but fixing it would probably lead to an even bigger
799 * one.
800 */
801
802 /*
803 * X86 design:
804 * - similar to the PPC32 design, we reserve EBX to hold the GOT pointer.
805 */
806
807 #ifdef MONO_ARCH_AOT_SUPPORTED
808 /*
809 * arch_emit_got_offset:
810 *
811 * The memory pointed to by CODE should hold native code for computing the GOT
812 * address. Emit this code while patching it with the offset between code and
813 * the GOT. CODE_SIZE is set to the number of bytes emitted.
814 */
815 static void
816 arch_emit_got_offset (MonoAotCompile *acfg, guint8 *code, int *code_size)
817 {
818 #if defined(TARGET_POWERPC64)
819 g_assert (!acfg->use_bin_writer);
820 emit_unset_mode (acfg);
821 /*
822 * The ppc32 code doesn't seem to work on ppc64, the assembler complains about
823 * unsupported relocations. So we store the got address into the .Lgot_addr
824 * symbol which is in the text segment, compute its address, and load it.
825 */
826 fprintf (acfg->fp, ".L%d:\n", acfg->label_generator);
827 fprintf (acfg->fp, "lis 0, (.Lgot_addr + 4 - .L%d)@h\n", acfg->label_generator);
828 fprintf (acfg->fp, "ori 0, 0, (.Lgot_addr + 4 - .L%d)@l\n", acfg->label_generator);
829 fprintf (acfg->fp, "add 30, 30, 0\n");
830 fprintf (acfg->fp, "%s 30, 0(30)\n", PPC_LD_OP);
831 acfg->label_generator ++;
832 *code_size = 16;
833 #elif defined(TARGET_POWERPC)
834 g_assert (!acfg->use_bin_writer);
835 emit_unset_mode (acfg);
836 fprintf (acfg->fp, ".L%d:\n", acfg->label_generator);
837 fprintf (acfg->fp, "lis 0, (%s + 4 - .L%d)@h\n", acfg->got_symbol, acfg->label_generator);
838 fprintf (acfg->fp, "ori 0, 0, (%s + 4 - .L%d)@l\n", acfg->got_symbol, acfg->label_generator);
839 acfg->label_generator ++;
840 *code_size = 8;
841 #else
842 guint32 offset = mono_arch_get_patch_offset (code);
843 emit_bytes (acfg, code, offset);
844 emit_symbol_diff (acfg, acfg->got_symbol, ".", offset);
845
846 *code_size = offset + 4;
847 #endif
848 }
849
850 /*
851 * arch_emit_got_access:
852 *
853 * The memory pointed to by CODE should hold native code for loading a GOT
854 * slot. Emit this code while patching it so it accesses the GOT slot GOT_SLOT.
855 * CODE_SIZE is set to the number of bytes emitted.
856 */
857 static void
858 arch_emit_got_access (MonoAotCompile *acfg, guint8 *code, int got_slot, int *code_size)
859 {
860 /* Emit beginning of instruction */
861 emit_bytes (acfg, code, mono_arch_get_patch_offset (code));
862
863 /* Emit the offset */
864 #ifdef TARGET_AMD64
865 emit_symbol_diff (acfg, acfg->got_symbol, ".", (unsigned int) ((got_slot * sizeof (gpointer)) - 4));
866 *code_size = mono_arch_get_patch_offset (code) + 4;
867 #elif defined(TARGET_X86)
868 emit_int32 (acfg, (unsigned int) ((got_slot * sizeof (gpointer))));
869 *code_size = mono_arch_get_patch_offset (code) + 4;
870 #elif defined(TARGET_ARM)
871 emit_symbol_diff (acfg, acfg->got_symbol, ".", (unsigned int) ((got_slot * sizeof (gpointer))) - 12);
872 *code_size = mono_arch_get_patch_offset (code) + 4;
873 #elif defined(TARGET_ARM64)
874 arm64_emit_got_access (acfg, code, got_slot, code_size);
875 #elif defined(TARGET_POWERPC)
876 {
877 guint8 buf [32];
878 guint8 *code;
879
880 code = buf;
881 ppc_load32 (code, ppc_r0, got_slot * sizeof (gpointer));
882 g_assert (code - buf == 8);
883 emit_bytes (acfg, buf, code - buf);
884 *code_size = code - buf;
885 }
886 #else
887 g_assert_not_reached ();
888 #endif
889 }
890
891 #endif
892
893 #ifdef MONO_ARCH_AOT_SUPPORTED
894 /*
895 * arch_emit_objc_selector_ref:
896 *
897 * Emit the implementation of OP_OBJC_GET_SELECTOR, which itself implements @selector(foo:) in objective-c.
898 */
899 static void
900 arch_emit_objc_selector_ref (MonoAotCompile *acfg, guint8 *code, int index, int *code_size)
901 {
902 #if defined(TARGET_ARM)
903 char symbol1 [256];
904 char symbol2 [256];
905 int lindex = acfg->objc_selector_index_2 ++;
906
907 /* Emit ldr.imm/b */
908 emit_bytes (acfg, code, 8);
909
910 sprintf (symbol1, "L_OBJC_SELECTOR_%d", lindex);
911 sprintf (symbol2, "L_OBJC_SELECTOR_REFERENCES_%d", index);
912
913 emit_label (acfg, symbol1);
914 img_writer_emit_unset_mode (acfg->w);
915 fprintf (acfg->fp, ".long %s-(%s+12)", symbol2, symbol1);
916
917 *code_size = 12;
918 #elif defined(TARGET_ARM64)
919 arm64_emit_objc_selector_ref (acfg, code, index, code_size);
920 #else
921 g_assert_not_reached ();
922 #endif
923 }
924 #endif
925
926 /*
927 * arch_emit_plt_entry:
928 *
929 * Emit code for the PLT entry with index INDEX.
930 */
931 static void
932 arch_emit_plt_entry (MonoAotCompile *acfg, int index)
933 {
934 #if defined(TARGET_X86)
935 guint32 offset = (acfg->plt_got_offset_base + index) * sizeof (gpointer);
936 #if defined(__default_codegen__)
937 /* jmp *<offset>(%ebx) */
938 emit_byte (acfg, 0xff);
939 emit_byte (acfg, 0xa3);
940 emit_int32 (acfg, offset);
941 /* Used by mono_aot_get_plt_info_offset */
942 emit_int32 (acfg, acfg->plt_got_info_offsets [index]);
943 #elif defined(__native_client_codegen__)
944 const guint8 kSizeOfNaClJmp = 11;
945 guint8 bytes[kSizeOfNaClJmp];
946 guint8 *pbytes = &bytes[0];
947
948 x86_jump_membase32 (pbytes, X86_EBX, offset);
949 emit_bytes (acfg, bytes, kSizeOfNaClJmp);
950 /* four bytes of data, used by mono_arch_patch_plt_entry */
951 /* For Native Client, make this work with data embedded in push. */
952 emit_byte (acfg, 0x68); /* hide data in a push */
953 emit_int32 (acfg, acfg->plt_got_info_offsets [index]);
954 emit_alignment (acfg, AOT_FUNC_ALIGNMENT);
955 #endif /*__native_client_codegen__*/
956 #elif defined(TARGET_AMD64)
957 #if defined(__default_codegen__)
958 /*
959 * We can't emit jumps because they are 32 bits only so they can't be patched.
960 * So we make indirect calls through GOT entries which are patched by the AOT
961 * loader to point to .Lpd entries.
962 */
963 /* jmpq *<offset>(%rip) */
964 emit_byte (acfg, '\xff');
965 emit_byte (acfg, '\x25');
966 emit_symbol_diff (acfg, acfg->got_symbol, ".", ((acfg->plt_got_offset_base + index) * sizeof (gpointer)) -4);
967 /* Used by mono_aot_get_plt_info_offset */
968 emit_int32 (acfg, acfg->plt_got_info_offsets [index]);
969 acfg->stats.plt_size += 10;
970 #elif defined(__native_client_codegen__)
971 guint8 buf [256];
972 guint8 *buf_aligned = ALIGN_TO(buf, kNaClAlignment);
973 guint8 *code = buf_aligned;
974
975 /* mov <OFFSET>(%rip), %r11d */
976 emit_byte (acfg, '\x45');
977 emit_byte (acfg, '\x8b');
978 emit_byte (acfg, '\x1d');
979 emit_symbol_diff (acfg, acfg->got_symbol, ".", ((acfg->plt_got_offset_base + index) * sizeof (gpointer)) -4);
980
981 amd64_jump_reg (code, AMD64_R11);
982 /* This should be constant for the plt patch */
983 g_assert ((size_t)(code-buf_aligned) == 10);
984 emit_bytes (acfg, buf_aligned, code - buf_aligned);
985
986 /* Hide data in a push imm32 so it passes validation */
987 emit_byte (acfg, 0x68); /* push */
988 emit_int32 (acfg, acfg->plt_got_info_offsets [index]);
989 emit_alignment (acfg, AOT_FUNC_ALIGNMENT);
990 #endif /*__native_client_codegen__*/
991 #elif defined(TARGET_ARM)
992 guint8 buf [256];
993 guint8 *code;
994
995 code = buf;
996 ARM_LDR_IMM (code, ARMREG_IP, ARMREG_PC, 0);
997 ARM_LDR_REG_REG (code, ARMREG_PC, ARMREG_PC, ARMREG_IP);
998 emit_bytes (acfg, buf, code - buf);
999 emit_symbol_diff (acfg, acfg->got_symbol, ".", ((acfg->plt_got_offset_base + index) * sizeof (gpointer)) - 4);
1000 /* Used by mono_aot_get_plt_info_offset */
1001 emit_int32 (acfg, acfg->plt_got_info_offsets [index]);
1002 #elif defined(TARGET_ARM64)
1003 arm64_emit_plt_entry (acfg, index);
1004 #elif defined(TARGET_POWERPC)
1005 guint32 offset = (acfg->plt_got_offset_base + index) * sizeof (gpointer);
1006
1007 /* The GOT address is guaranteed to be in r30 by OP_LOAD_GOTADDR */
1008 g_assert (!acfg->use_bin_writer);
1009 emit_unset_mode (acfg);
1010 fprintf (acfg->fp, "lis 11, %d@h\n", offset);
1011 fprintf (acfg->fp, "ori 11, 11, %d@l\n", offset);
1012 fprintf (acfg->fp, "add 11, 11, 30\n");
1013 fprintf (acfg->fp, "%s 11, 0(11)\n", PPC_LD_OP);
1014 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
1015 fprintf (acfg->fp, "%s 2, %d(11)\n", PPC_LD_OP, (int)sizeof (gpointer));
1016 fprintf (acfg->fp, "%s 11, 0(11)\n", PPC_LD_OP);
1017 #endif
1018 fprintf (acfg->fp, "mtctr 11\n");
1019 fprintf (acfg->fp, "bctr\n");
1020 emit_int32 (acfg, acfg->plt_got_info_offsets [index]);
1021 #else
1022 g_assert_not_reached ();
1023 #endif
1024 }
1025
1026 static void
1027 arch_emit_llvm_plt_entry (MonoAotCompile *acfg, int index)
1028 {
1029 #if defined(TARGET_ARM)
1030 #if 0
1031 /* LLVM calls the PLT entries using bl, so emit a stub */
1032 /* FIXME: Too much overhead on every call */
1033 fprintf (acfg->fp, ".thumb_func\n");
1034 fprintf (acfg->fp, "bx pc\n");
1035 fprintf (acfg->fp, "nop\n");
1036 fprintf (acfg->fp, ".arm\n");
1037 #endif
1038 /* LLVM calls the PLT entries using bl, so these have to be thumb2 */
1039 /* The caller already transitioned to thumb */
1040 /* The code below should be 12 bytes long */
1041 /* clang has trouble encoding these instructions, so emit the binary */
1042 #if 0
1043 fprintf (acfg->fp, "ldr ip, [pc, #8]\n");
1044 /* thumb can't encode ld pc, [pc, ip] */
1045 fprintf (acfg->fp, "add ip, pc, ip\n");
1046 fprintf (acfg->fp, "ldr ip, [ip, #0]\n");
1047 fprintf (acfg->fp, "bx ip\n");
1048 #endif
1049 emit_set_thumb_mode (acfg);
1050 fprintf (acfg->fp, ".4byte 0xc008f8df\n");
1051 fprintf (acfg->fp, ".2byte 0x44fc\n");
1052 fprintf (acfg->fp, ".4byte 0xc000f8dc\n");
1053 fprintf (acfg->fp, ".2byte 0x4760\n");
1054 emit_symbol_diff (acfg, acfg->got_symbol, ".", ((acfg->plt_got_offset_base + index) * sizeof (gpointer)) + 4);
1055 emit_int32 (acfg, acfg->plt_got_info_offsets [index]);
1056 emit_unset_mode (acfg);
1057 emit_set_arm_mode (acfg);
1058 #else
1059 g_assert_not_reached ();
1060 #endif
1061 }
1062
1063 /*
1064 * arch_emit_specific_trampoline_pages:
1065 *
1066 * Emits a page full of trampolines: each trampoline uses its own address to
1067 * lookup both the generic trampoline code and the data argument.
1068 * This page can be remapped in process multiple times so we can get an
1069 * unlimited number of trampolines.
1070 * Specifically this implementation uses the following trick: two memory pages
1071 * are allocated, with the first containing the data and the second containing the trampolines.
1072 * To reduce trampoline size, each trampoline jumps at the start of the page where a common
1073 * implementation does all the lifting.
1074 * Note that the ARM single trampoline size is 8 bytes, exactly like the data that needs to be stored
1075 * on the arm 32 bit system.
1076 */
1077 static void
1078 arch_emit_specific_trampoline_pages (MonoAotCompile *acfg)
1079 {
1080 #if defined(TARGET_ARM)
1081 guint8 buf [128];
1082 guint8 *code;
1083 guint8 *loop_start, *loop_branch_back, *loop_end_check, *imt_found_check;
1084 int i;
1085 #define COMMON_TRAMP_SIZE 16
1086 int count = (mono_pagesize () - COMMON_TRAMP_SIZE) / 8;
1087 int imm8, rot_amount;
1088 char symbol [128];
1089
1090 if (!acfg->aot_opts.use_trampolines_page)
1091 return;
1092
1093 acfg->tramp_page_size = mono_pagesize ();
1094
1095 sprintf (symbol, "%sspecific_trampolines_page", acfg->user_symbol_prefix);
1096 emit_alignment (acfg, mono_pagesize ());
1097 emit_global (acfg, symbol, TRUE);
1098 emit_label (acfg, symbol);
1099
1100 /* emit the generic code first, the trampoline address + 8 is in the lr register */
1101 code = buf;
1102 imm8 = mono_arm_is_rotated_imm8 (mono_pagesize (), &rot_amount);
1103 ARM_SUB_REG_IMM (code, ARMREG_LR, ARMREG_LR, imm8, rot_amount);
1104 ARM_LDR_IMM (code, ARMREG_R1, ARMREG_LR, -8);
1105 ARM_LDR_IMM (code, ARMREG_PC, ARMREG_LR, -4);
1106 ARM_NOP (code);
1107 g_assert (code - buf == COMMON_TRAMP_SIZE);
1108
1109 /* Emit it */
1110 emit_bytes (acfg, buf, code - buf);
1111
1112 for (i = 0; i < count; ++i) {
1113 code = buf;
1114 ARM_PUSH (code, 0x5fff);
1115 ARM_BL (code, 0);
1116 arm_patch (code - 4, code - COMMON_TRAMP_SIZE - 8 * (i + 1));
1117 g_assert (code - buf == 8);
1118 emit_bytes (acfg, buf, code - buf);
1119 }
1120
1121 /* now the rgctx trampolines: each specific trampolines puts in the ip register
1122 * the instruction pointer address, so the generic trampoline at the start of the page
1123 * subtracts 4096 to get to the data page and loads the values
1124 * We again fit the generic trampiline in 16 bytes.
1125 */
1126 sprintf (symbol, "%srgctx_trampolines_page", acfg->user_symbol_prefix);
1127 emit_global (acfg, symbol, TRUE);
1128 emit_label (acfg, symbol);
1129 code = buf;
1130 imm8 = mono_arm_is_rotated_imm8 (mono_pagesize (), &rot_amount);
1131 ARM_SUB_REG_IMM (code, ARMREG_IP, ARMREG_IP, imm8, rot_amount);
1132 ARM_LDR_IMM (code, MONO_ARCH_RGCTX_REG, ARMREG_IP, -8);
1133 ARM_LDR_IMM (code, ARMREG_PC, ARMREG_IP, -4);
1134 ARM_NOP (code);
1135 g_assert (code - buf == COMMON_TRAMP_SIZE);
1136
1137 /* Emit it */
1138 emit_bytes (acfg, buf, code - buf);
1139
1140 for (i = 0; i < count; ++i) {
1141 code = buf;
1142 ARM_MOV_REG_REG (code, ARMREG_IP, ARMREG_PC);
1143 ARM_B (code, 0);
1144 arm_patch (code - 4, code - COMMON_TRAMP_SIZE - 8 * (i + 1));
1145 g_assert (code - buf == 8);
1146 emit_bytes (acfg, buf, code - buf);
1147 }
1148
1149 /*
1150 * gsharedvt arg trampolines: see arch_emit_gsharedvt_arg_trampoline ()
1151 */
1152 sprintf (symbol, "%sgsharedvt_arg_trampolines_page", acfg->user_symbol_prefix);
1153 emit_global (acfg, symbol, TRUE);
1154 emit_label (acfg, symbol);
1155 code = buf;
1156 ARM_PUSH (code, (1 << ARMREG_R0) | (1 << ARMREG_R1) | (1 << ARMREG_R2) | (1 << ARMREG_R3));
1157 imm8 = mono_arm_is_rotated_imm8 (mono_pagesize (), &rot_amount);
1158 ARM_SUB_REG_IMM (code, ARMREG_IP, ARMREG_IP, imm8, rot_amount);
1159 ARM_LDR_IMM (code, ARMREG_R0, ARMREG_IP, -8);
1160 ARM_LDR_IMM (code, ARMREG_PC, ARMREG_IP, -4);
1161 g_assert (code - buf == COMMON_TRAMP_SIZE);
1162 /* Emit it */
1163 emit_bytes (acfg, buf, code - buf);
1164
1165 for (i = 0; i < count; ++i) {
1166 code = buf;
1167 ARM_MOV_REG_REG (code, ARMREG_IP, ARMREG_PC);
1168 ARM_B (code, 0);
1169 arm_patch (code - 4, code - COMMON_TRAMP_SIZE - 8 * (i + 1));
1170 g_assert (code - buf == 8);
1171 emit_bytes (acfg, buf, code - buf);
1172 }
1173
1174 /* now the imt trampolines: each specific trampolines puts in the ip register
1175 * the instruction pointer address, so the generic trampoline at the start of the page
1176 * subtracts 4096 to get to the data page and loads the values
1177 * We again fit the generic trampiline in 16 bytes.
1178 */
1179 #define IMT_TRAMP_SIZE 72
1180 sprintf (symbol, "%simt_trampolines_page", acfg->user_symbol_prefix);
1181 emit_global (acfg, symbol, TRUE);
1182 emit_label (acfg, symbol);
1183 code = buf;
1184 /* Need at least two free registers, plus a slot for storing the pc */
1185 ARM_PUSH (code, (1 << ARMREG_R0)|(1 << ARMREG_R1)|(1 << ARMREG_R2));
1186
1187 imm8 = mono_arm_is_rotated_imm8 (mono_pagesize (), &rot_amount);
1188 ARM_SUB_REG_IMM (code, ARMREG_IP, ARMREG_IP, imm8, rot_amount);
1189 ARM_LDR_IMM (code, ARMREG_R0, ARMREG_IP, -8);
1190
1191 /* The IMT method is in v5, r0 has the imt array address */
1192
1193 loop_start = code;
1194 ARM_LDR_IMM (code, ARMREG_R1, ARMREG_R0, 0);
1195 ARM_CMP_REG_REG (code, ARMREG_R1, ARMREG_V5);
1196 imt_found_check = code;
1197 ARM_B_COND (code, ARMCOND_EQ, 0);
1198
1199 /* End-of-loop check */
1200 ARM_CMP_REG_IMM (code, ARMREG_R1, 0, 0);
1201 loop_end_check = code;
1202 ARM_B_COND (code, ARMCOND_EQ, 0);
1203
1204 /* Loop footer */
1205 ARM_ADD_REG_IMM8 (code, ARMREG_R0, ARMREG_R0, sizeof (gpointer) * 2);
1206 loop_branch_back = code;
1207 ARM_B (code, 0);
1208 arm_patch (loop_branch_back, loop_start);
1209
1210 /* Match */
1211 arm_patch (imt_found_check, code);
1212 ARM_LDR_IMM (code, ARMREG_R0, ARMREG_R0, 4);
1213 ARM_LDR_IMM (code, ARMREG_R0, ARMREG_R0, 0);
1214 /* Save it to the third stack slot */
1215 ARM_STR_IMM (code, ARMREG_R0, ARMREG_SP, 8);
1216 /* Restore the registers and branch */
1217 ARM_POP (code, (1 << ARMREG_R0)|(1 << ARMREG_R1)|(1 << ARMREG_PC));
1218
1219 /* No match */
1220 arm_patch (loop_end_check, code);
1221 ARM_LDR_IMM (code, ARMREG_R0, ARMREG_R0, 4);
1222 ARM_STR_IMM (code, ARMREG_R0, ARMREG_SP, 8);
1223 ARM_POP (code, (1 << ARMREG_R0)|(1 << ARMREG_R1)|(1 << ARMREG_PC));
1224 ARM_NOP (code);
1225
1226 /* Emit it */
1227 g_assert (code - buf == IMT_TRAMP_SIZE);
1228 emit_bytes (acfg, buf, code - buf);
1229
1230 for (i = 0; i < count; ++i) {
1231 code = buf;
1232 ARM_MOV_REG_REG (code, ARMREG_IP, ARMREG_PC);
1233 ARM_B (code, 0);
1234 arm_patch (code - 4, code - IMT_TRAMP_SIZE - 8 * (i + 1));
1235 g_assert (code - buf == 8);
1236 emit_bytes (acfg, buf, code - buf);
1237 }
1238 #elif defined(TARGET_ARM64)
1239 arm64_emit_specific_trampoline_pages (acfg);
1240 #endif
1241 }
1242
1243 /*
1244 * arch_emit_specific_trampoline:
1245 *
1246 * Emit code for a specific trampoline. OFFSET is the offset of the first of
1247 * two GOT slots which contain the generic trampoline address and the trampoline
1248 * argument. TRAMP_SIZE is set to the size of the emitted trampoline.
1249 */
1250 static void
1251 arch_emit_specific_trampoline (MonoAotCompile *acfg, int offset, int *tramp_size)
1252 {
1253 /*
1254 * The trampolines created here are variations of the specific
1255 * trampolines created in mono_arch_create_specific_trampoline (). The
1256 * differences are:
1257 * - the generic trampoline address is taken from a got slot.
1258 * - the offset of the got slot where the trampoline argument is stored
1259 * is embedded in the instruction stream, and the generic trampoline
1260 * can load the argument by loading the offset, adding it to the
1261 * address of the trampoline to get the address of the got slot, and
1262 * loading the argument from there.
1263 * - all the trampolines should be of the same length.
1264 */
1265 #if defined(TARGET_AMD64)
1266 #if defined(__default_codegen__)
1267 /* This should be exactly 16 bytes long */
1268 *tramp_size = 16;
1269 /* call *<offset>(%rip) */
1270 emit_byte (acfg, '\x41');
1271 emit_byte (acfg, '\xff');
1272 emit_byte (acfg, '\x15');
1273 emit_symbol_diff (acfg, acfg->got_symbol, ".", (offset * sizeof (gpointer)) - 4);
1274 /* This should be relative to the start of the trampoline */
1275 emit_symbol_diff (acfg, acfg->got_symbol, ".", ((offset+1) * sizeof (gpointer)) + 7);
1276 emit_zero_bytes (acfg, 5);
1277 #elif defined(__native_client_codegen__)
1278 guint8 buf [256];
1279 guint8 *buf_aligned = ALIGN_TO(buf, kNaClAlignment);
1280 guint8 *code = buf_aligned;
1281 guint8 *call_start;
1282 size_t call_len;
1283 int got_offset;
1284
1285 /* Emit this call in 'code' so we can find out how long it is. */
1286 amd64_call_reg (code, AMD64_R11);
1287 call_start = mono_arch_nacl_skip_nops (buf_aligned);
1288 call_len = code - call_start;
1289
1290 /* The tramp_size is twice the NaCl alignment because it starts with */
1291 /* a call which needs to be aligned to the end of the boundary. */
1292 *tramp_size = kNaClAlignment*2;
1293 {
1294 /* Emit nops to align call site below which is 7 bytes plus */
1295 /* the length of the call sequence emitted above. */
1296 /* Note: this requires the specific trampoline starts on a */
1297 /* kNaclAlignedment aligned address, which it does because */
1298 /* it's its own function that is aligned. */
1299 guint8 nop_buf[256];
1300 guint8 *nopbuf_aligned = ALIGN_TO (nop_buf, kNaClAlignment);
1301 guint8 *nopbuf_end = mono_arch_nacl_pad (nopbuf_aligned, kNaClAlignment - 7 - (call_len));
1302 emit_bytes (acfg, nopbuf_aligned, nopbuf_end - nopbuf_aligned);
1303 }
1304 /* The trampoline is stored at the offset'th pointer, the -4 is */
1305 /* present because RIP relative addressing starts at the end of */
1306 /* the current instruction, while the label "." is relative to */
1307 /* the beginning of the current asm location, which in this case */
1308 /* is not the mov instruction, but the offset itself, due to the */
1309 /* way the bytes and ints are emitted here. */
1310 got_offset = (offset * sizeof(gpointer)) - 4;
1311
1312 /* mov <OFFSET>(%rip), %r11d */
1313 emit_byte (acfg, '\x45');
1314 emit_byte (acfg, '\x8b');
1315 emit_byte (acfg, '\x1d');
1316 emit_symbol_diff (acfg, acfg->got_symbol, ".", got_offset);
1317
1318 /* naclcall %r11 */
1319 emit_bytes (acfg, call_start, call_len);
1320
1321 /* The arg is stored at the offset+1 pointer, relative to beginning */
1322 /* of trampoline: 7 for mov, plus the call length, and 1 for push. */
1323 got_offset = ((offset + 1) * sizeof(gpointer)) + 7 + call_len + 1;
1324
1325 /* We can't emit this data directly, hide in a "push imm32" */
1326 emit_byte (acfg, '\x68'); /* push */
1327 emit_symbol_diff (acfg, acfg->got_symbol, ".", got_offset);
1328 emit_alignment (acfg, kNaClAlignment);
1329 #endif /*__native_client_codegen__*/
1330 #elif defined(TARGET_ARM)
1331 guint8 buf [128];
1332 guint8 *code;
1333
1334 /* This should be exactly 20 bytes long */
1335 *tramp_size = 20;
1336 code = buf;
1337 ARM_PUSH (code, 0x5fff);
1338 ARM_LDR_IMM (code, ARMREG_R1, ARMREG_PC, 4);
1339 /* Load the value from the GOT */
1340 ARM_LDR_REG_REG (code, ARMREG_R1, ARMREG_PC, ARMREG_R1);
1341 /* Branch to it */
1342 ARM_BLX_REG (code, ARMREG_R1);
1343
1344 g_assert (code - buf == 16);
1345
1346 /* Emit it */
1347 emit_bytes (acfg, buf, code - buf);
1348 /*
1349 * Only one offset is needed, since the second one would be equal to the
1350 * first one.
1351 */
1352 emit_symbol_diff (acfg, acfg->got_symbol, ".", (offset * sizeof (gpointer)) - 4 + 4);
1353 //emit_symbol_diff (acfg, acfg->got_symbol, ".", ((offset + 1) * sizeof (gpointer)) - 4 + 8);
1354 #elif defined(TARGET_ARM64)
1355 arm64_emit_specific_trampoline (acfg, offset, tramp_size);
1356 #elif defined(TARGET_POWERPC)
1357 guint8 buf [128];
1358 guint8 *code;
1359
1360 *tramp_size = 4;
1361 code = buf;
1362
1363 g_assert (!acfg->use_bin_writer);
1364
1365 /*
1366 * PPC has no ip relative addressing, so we need to compute the address
1367 * of the mscorlib got. That is slow and complex, so instead, we store it
1368 * in the second got slot of every aot image. The caller already computed
1369 * the address of its got and placed it into r30.
1370 */
1371 emit_unset_mode (acfg);
1372 /* Load mscorlib got address */
1373 fprintf (acfg->fp, "%s 0, %d(30)\n", PPC_LD_OP, (int)sizeof (gpointer));
1374 /* Load generic trampoline address */
1375 fprintf (acfg->fp, "lis 11, %d@h\n", (int)(offset * sizeof (gpointer)));
1376 fprintf (acfg->fp, "ori 11, 11, %d@l\n", (int)(offset * sizeof (gpointer)));
1377 fprintf (acfg->fp, "%s 11, 11, 0\n", PPC_LDX_OP);
1378 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
1379 fprintf (acfg->fp, "%s 11, 0(11)\n", PPC_LD_OP);
1380 #endif
1381 fprintf (acfg->fp, "mtctr 11\n");
1382 /* Load trampoline argument */
1383 /* On ppc, we pass it normally to the generic trampoline */
1384 fprintf (acfg->fp, "lis 11, %d@h\n", (int)((offset + 1) * sizeof (gpointer)));
1385 fprintf (acfg->fp, "ori 11, 11, %d@l\n", (int)((offset + 1) * sizeof (gpointer)));
1386 fprintf (acfg->fp, "%s 0, 11, 0\n", PPC_LDX_OP);
1387 /* Branch to generic trampoline */
1388 fprintf (acfg->fp, "bctr\n");
1389
1390 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
1391 *tramp_size = 10 * 4;
1392 #else
1393 *tramp_size = 9 * 4;
1394 #endif
1395 #elif defined(TARGET_X86)
1396 guint8 buf [128];
1397 guint8 *code;
1398
1399 /* Similar to the PPC code above */
1400
1401 /* FIXME: Could this clobber the register needed by get_vcall_slot () ? */
1402
1403 /* We clobber ECX, since EAX is used as MONO_ARCH_MONITOR_OBJECT_REG */
1404 #ifdef MONO_ARCH_MONITOR_OBJECT_REG
1405 g_assert (MONO_ARCH_MONITOR_OBJECT_REG != X86_ECX);
1406 #endif
1407
1408 code = buf;
1409 /* Load mscorlib got address */
1410 x86_mov_reg_membase (code, X86_ECX, MONO_ARCH_GOT_REG, sizeof (gpointer), 4);
1411 /* Push trampoline argument */
1412 x86_push_membase (code, X86_ECX, (offset + 1) * sizeof (gpointer));
1413 /* Load generic trampoline address */
1414 x86_mov_reg_membase (code, X86_ECX, X86_ECX, offset * sizeof (gpointer), 4);
1415 /* Branch to generic trampoline */
1416 x86_jump_reg (code, X86_ECX);
1417
1418 #ifdef __native_client_codegen__
1419 {
1420 /* emit nops to next 32 byte alignment */
1421 int a = (~kNaClAlignmentMask) & ((code - buf) + kNaClAlignment - 1);
1422 while (code < (buf + a)) x86_nop(code);
1423 }
1424 #endif
1425 emit_bytes (acfg, buf, code - buf);
1426
1427 *tramp_size = NACL_SIZE(17, kNaClAlignment);
1428 g_assert (code - buf == *tramp_size);
1429 #else
1430 g_assert_not_reached ();
1431 #endif
1432 }
1433
1434 /*
1435 * arch_emit_unbox_trampoline:
1436 *
1437 * Emit code for the unbox trampoline for METHOD used in the full-aot case.
1438 * CALL_TARGET is the symbol pointing to the native code of METHOD.
1439 */
1440 static void
1441 arch_emit_unbox_trampoline (MonoAotCompile *acfg, MonoCompile *cfg, MonoMethod *method, const char *call_target)
1442 {
1443 #if defined(TARGET_AMD64)
1444 guint8 buf [32];
1445 guint8 *code;
1446 int this_reg;
1447
1448 this_reg = mono_arch_get_this_arg_reg (NULL);
1449 code = buf;
1450 amd64_alu_reg_imm (code, X86_ADD, this_reg, sizeof (MonoObject));
1451
1452 emit_bytes (acfg, buf, code - buf);
1453 /* jump <method> */
1454 emit_byte (acfg, '\xe9');
1455 emit_symbol_diff (acfg, call_target, ".", -4);
1456 #elif defined(TARGET_X86)
1457 guint8 buf [32];
1458 guint8 *code;
1459 int this_pos = 4;
1460
1461 code = buf;
1462
1463 x86_alu_membase_imm (code, X86_ADD, X86_ESP, this_pos, sizeof (MonoObject));
1464
1465 emit_bytes (acfg, buf, code - buf);
1466
1467 /* jump <method> */
1468 emit_byte (acfg, '\xe9');
1469 emit_symbol_diff (acfg, call_target, ".", -4);
1470 #elif defined(TARGET_ARM)
1471 guint8 buf [128];
1472 guint8 *code;
1473
1474 if (acfg->thumb_mixed && cfg->compile_llvm) {
1475 fprintf (acfg->fp, "add r0, r0, #%d\n", (int)sizeof (MonoObject));
1476 fprintf (acfg->fp, "b %s\n", call_target);
1477 fprintf (acfg->fp, ".arm\n");
1478 fprintf (acfg->fp, ".align 2\n");
1479 return;
1480 }
1481
1482 code = buf;
1483
1484 ARM_ADD_REG_IMM8 (code, ARMREG_R0, ARMREG_R0, sizeof (MonoObject));
1485
1486 emit_bytes (acfg, buf, code - buf);
1487 /* jump to method */
1488 if (acfg->use_bin_writer) {
1489 guint8 buf [4];
1490 guint8 *code;
1491
1492 code = buf;
1493 ARM_B (code, 0);
1494
1495 img_writer_emit_reloc (acfg->w, R_ARM_JUMP24, call_target, -8);
1496 emit_bytes (acfg, buf, 4);
1497 } else {
1498 if (acfg->thumb_mixed && cfg->compile_llvm)
1499 fprintf (acfg->fp, "\n\tbx %s\n", call_target);
1500 else
1501 fprintf (acfg->fp, "\n\tb %s\n", call_target);
1502 }
1503 #elif defined(TARGET_ARM64)
1504 arm64_emit_unbox_trampoline (acfg, cfg, method, call_target);
1505 #elif defined(TARGET_POWERPC)
1506 int this_pos = 3;
1507
1508 g_assert (!acfg->use_bin_writer);
1509
1510 fprintf (acfg->fp, "\n\taddi %d, %d, %d\n", this_pos, this_pos, (int)sizeof (MonoObject));
1511 fprintf (acfg->fp, "\n\tb %s\n", call_target);
1512 #else
1513 g_assert_not_reached ();
1514 #endif
1515 }
1516
1517 /*
1518 * arch_emit_static_rgctx_trampoline:
1519 *
1520 * Emit code for a static rgctx trampoline. OFFSET is the offset of the first of
1521 * two GOT slots which contain the rgctx argument, and the method to jump to.
1522 * TRAMP_SIZE is set to the size of the emitted trampoline.
1523 * These kinds of trampolines cannot be enumerated statically, since there could
1524 * be one trampoline per method instantiation, so we emit the same code for all
1525 * trampolines, and parameterize them using two GOT slots.
1526 */
1527 static void
1528 arch_emit_static_rgctx_trampoline (MonoAotCompile *acfg, int offset, int *tramp_size)
1529 {
1530 #if defined(TARGET_AMD64)
1531 #if defined(__default_codegen__)
1532 /* This should be exactly 13 bytes long */
1533 *tramp_size = 13;
1534
1535 /* mov <OFFSET>(%rip), %r10 */
1536 emit_byte (acfg, '\x4d');
1537 emit_byte (acfg, '\x8b');
1538 emit_byte (acfg, '\x15');
1539 emit_symbol_diff (acfg, acfg->got_symbol, ".", (offset * sizeof (gpointer)) - 4);
1540
1541 /* jmp *<offset>(%rip) */
1542 emit_byte (acfg, '\xff');
1543 emit_byte (acfg, '\x25');
1544 emit_symbol_diff (acfg, acfg->got_symbol, ".", ((offset + 1) * sizeof (gpointer)) - 4);
1545 #elif defined(__native_client_codegen__)
1546 guint8 buf [128];
1547 guint8 *buf_aligned = ALIGN_TO(buf, kNaClAlignment);
1548 guint8 *code = buf_aligned;
1549
1550 /* mov <OFFSET>(%rip), %r10d */
1551 emit_byte (acfg, '\x45');
1552 emit_byte (acfg, '\x8b');
1553 emit_byte (acfg, '\x15');
1554 emit_symbol_diff (acfg, acfg->got_symbol, ".", (offset * sizeof (gpointer)) - 4);
1555
1556 /* mov <OFFSET>(%rip), %r11d */
1557 emit_byte (acfg, '\x45');
1558 emit_byte (acfg, '\x8b');
1559 emit_byte (acfg, '\x1d');
1560 emit_symbol_diff (acfg, acfg->got_symbol, ".", ((offset + 1) * sizeof (gpointer)) - 4);
1561
1562 /* nacljmp *%r11 */
1563 amd64_jump_reg (code, AMD64_R11);
1564 emit_bytes (acfg, buf_aligned, code - buf_aligned);
1565
1566 emit_alignment (acfg, kNaClAlignment);
1567 *tramp_size = kNaClAlignment;
1568 #endif /*__native_client_codegen__*/
1569
1570 #elif defined(TARGET_ARM)
1571 guint8 buf [128];
1572 guint8 *code;
1573
1574 /* This should be exactly 24 bytes long */
1575 *tramp_size = 24;
1576 code = buf;
1577 /* Load rgctx value */
1578 ARM_LDR_IMM (code, ARMREG_IP, ARMREG_PC, 8);
1579 ARM_LDR_REG_REG (code, MONO_ARCH_RGCTX_REG, ARMREG_PC, ARMREG_IP);
1580 /* Load branch addr + branch */
1581 ARM_LDR_IMM (code, ARMREG_IP, ARMREG_PC, 4);
1582 ARM_LDR_REG_REG (code, ARMREG_PC, ARMREG_PC, ARMREG_IP);
1583
1584 g_assert (code - buf == 16);
1585
1586 /* Emit it */
1587 emit_bytes (acfg, buf, code - buf);
1588 emit_symbol_diff (acfg, acfg->got_symbol, ".", (offset * sizeof (gpointer)) - 4 + 8);
1589 emit_symbol_diff (acfg, acfg->got_symbol, ".", ((offset + 1) * sizeof (gpointer)) - 4 + 4);
1590 #elif defined(TARGET_ARM64)
1591 arm64_emit_static_rgctx_trampoline (acfg, offset, tramp_size);
1592 #elif defined(TARGET_POWERPC)
1593 guint8 buf [128];
1594 guint8 *code;
1595
1596 *tramp_size = 4;
1597 code = buf;
1598
1599 g_assert (!acfg->use_bin_writer);
1600
1601 /*
1602 * PPC has no ip relative addressing, so we need to compute the address
1603 * of the mscorlib got. That is slow and complex, so instead, we store it
1604 * in the second got slot of every aot image. The caller already computed
1605 * the address of its got and placed it into r30.
1606 */
1607 emit_unset_mode (acfg);
1608 /* Load mscorlib got address */
1609 fprintf (acfg->fp, "%s 0, %d(30)\n", PPC_LD_OP, (int)sizeof (gpointer));
1610 /* Load rgctx */
1611 fprintf (acfg->fp, "lis 11, %d@h\n", (int)(offset * sizeof (gpointer)));
1612 fprintf (acfg->fp, "ori 11, 11, %d@l\n", (int)(offset * sizeof (gpointer)));
1613 fprintf (acfg->fp, "%s %d, 11, 0\n", PPC_LDX_OP, MONO_ARCH_RGCTX_REG);
1614 /* Load target address */
1615 fprintf (acfg->fp, "lis 11, %d@h\n", (int)((offset + 1) * sizeof (gpointer)));
1616 fprintf (acfg->fp, "ori 11, 11, %d@l\n", (int)((offset + 1) * sizeof (gpointer)));
1617 fprintf (acfg->fp, "%s 11, 11, 0\n", PPC_LDX_OP);
1618 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
1619 fprintf (acfg->fp, "%s 2, %d(11)\n", PPC_LD_OP, (int)sizeof (gpointer));
1620 fprintf (acfg->fp, "%s 11, 0(11)\n", PPC_LD_OP);
1621 #endif
1622 fprintf (acfg->fp, "mtctr 11\n");
1623 /* Branch to the target address */
1624 fprintf (acfg->fp, "bctr\n");
1625
1626 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
1627 *tramp_size = 11 * 4;
1628 #else
1629 *tramp_size = 9 * 4;
1630 #endif
1631
1632 #elif defined(TARGET_X86)
1633 guint8 buf [128];
1634 guint8 *code;
1635
1636 /* Similar to the PPC code above */
1637
1638 g_assert (MONO_ARCH_RGCTX_REG != X86_ECX);
1639
1640 code = buf;
1641 /* Load mscorlib got address */
1642 x86_mov_reg_membase (code, X86_ECX, MONO_ARCH_GOT_REG, sizeof (gpointer), 4);
1643 /* Load arg */
1644 x86_mov_reg_membase (code, MONO_ARCH_RGCTX_REG, X86_ECX, offset * sizeof (gpointer), 4);
1645 /* Branch to the target address */
1646 x86_jump_membase (code, X86_ECX, (offset + 1) * sizeof (gpointer));
1647
1648 #ifdef __native_client_codegen__
1649 {
1650 /* emit nops to next 32 byte alignment */
1651 int a = (~kNaClAlignmentMask) & ((code - buf) + kNaClAlignment - 1);
1652 while (code < (buf + a)) x86_nop(code);
1653 }
1654 #endif
1655
1656 emit_bytes (acfg, buf, code - buf);
1657
1658 *tramp_size = NACL_SIZE (15, kNaClAlignment);
1659 g_assert (code - buf == *tramp_size);
1660 #else
1661 g_assert_not_reached ();
1662 #endif
1663 }
1664
1665 /*
1666 * arch_emit_imt_thunk:
1667 *
1668 * Emit an IMT thunk usable in full-aot mode. The thunk uses 1 got slot which
1669 * points to an array of pointer pairs. The pairs of the form [key, ptr], where
1670 * key is the IMT key, and ptr holds the address of a memory location holding
1671 * the address to branch to if the IMT arg matches the key. The array is
1672 * terminated by a pair whose key is NULL, and whose ptr is the address of the
1673 * fail_tramp.
1674 * TRAMP_SIZE is set to the size of the emitted trampoline.
1675 */
1676 static void
1677 arch_emit_imt_thunk (MonoAotCompile *acfg, int offset, int *tramp_size)
1678 {
1679 #if defined(TARGET_AMD64)
1680 guint8 *buf, *code;
1681 #if defined(__native_client_codegen__)
1682 guint8 *buf_alloc;
1683 #endif
1684 guint8 *labels [16];
1685 guint8 mov_buf[3];
1686 guint8 *mov_buf_ptr = mov_buf;
1687
1688 const int kSizeOfMove = 7;
1689 #if defined(__default_codegen__)
1690 code = buf = g_malloc (256);
1691 #elif defined(__native_client_codegen__)
1692 buf_alloc = g_malloc (256 + kNaClAlignment + kSizeOfMove);
1693 buf = ((guint)buf_alloc + kNaClAlignment) & ~kNaClAlignmentMask;
1694 /* The RIP relative move below is emitted first */
1695 buf += kSizeOfMove;
1696 code = buf;
1697 #endif
1698
1699 /* FIXME: Optimize this, i.e. use binary search etc. */
1700 /* Maybe move the body into a separate function (slower, but much smaller) */
1701
1702 /* MONO_ARCH_IMT_SCRATCH_REG is a free register */
1703
1704 labels [0] = code;
1705 amd64_alu_membase_imm (code, X86_CMP, MONO_ARCH_IMT_SCRATCH_REG, 0, 0);
1706 labels [1] = code;
1707 amd64_branch8 (code, X86_CC_Z, 0, FALSE);
1708
1709 /* Check key */
1710 amd64_alu_membase_reg_size (code, X86_CMP, MONO_ARCH_IMT_SCRATCH_REG, 0, MONO_ARCH_IMT_REG, sizeof (gpointer));
1711 labels [2] = code;
1712 amd64_branch8 (code, X86_CC_Z, 0, FALSE);
1713
1714 /* Loop footer */
1715 amd64_alu_reg_imm (code, X86_ADD, MONO_ARCH_IMT_SCRATCH_REG, 2 * sizeof (gpointer));
1716 amd64_jump_code (code, labels [0]);
1717
1718 /* Match */
1719 mono_amd64_patch (labels [2], code);
1720 amd64_mov_reg_membase (code, MONO_ARCH_IMT_SCRATCH_REG, MONO_ARCH_IMT_SCRATCH_REG, sizeof (gpointer), sizeof (gpointer));
1721 amd64_jump_membase (code, MONO_ARCH_IMT_SCRATCH_REG, 0);
1722
1723 /* No match */
1724 mono_amd64_patch (labels [1], code);
1725 /* Load fail tramp */
1726 amd64_alu_reg_imm (code, X86_ADD, MONO_ARCH_IMT_SCRATCH_REG, sizeof (gpointer));
1727 /* Check if there is a fail tramp */
1728 amd64_alu_membase_imm (code, X86_CMP, MONO_ARCH_IMT_SCRATCH_REG, 0, 0);
1729 labels [3] = code;
1730 amd64_branch8 (code, X86_CC_Z, 0, FALSE);
1731 /* Jump to fail tramp */
1732 amd64_jump_membase (code, MONO_ARCH_IMT_SCRATCH_REG, 0);
1733
1734 /* Fail */
1735 mono_amd64_patch (labels [3], code);
1736 x86_breakpoint (code);
1737
1738 /* mov <OFFSET>(%rip), MONO_ARCH_IMT_SCRATCH_REG */
1739 amd64_emit_rex (mov_buf_ptr, sizeof(gpointer), MONO_ARCH_IMT_SCRATCH_REG, 0, AMD64_RIP);
1740 *(mov_buf_ptr)++ = (unsigned char)0x8b; /* mov opcode */
1741 x86_address_byte (mov_buf_ptr, 0, MONO_ARCH_IMT_SCRATCH_REG & 0x7, 5);
1742 emit_bytes (acfg, mov_buf, mov_buf_ptr - mov_buf);
1743 emit_symbol_diff (acfg, acfg->got_symbol, ".", (offset * sizeof (gpointer)) - 4);
1744
1745 emit_bytes (acfg, buf, code - buf);
1746
1747 *tramp_size = code - buf + kSizeOfMove;
1748 #if defined(__native_client_codegen__)
1749 /* The tramp will be padded to the next kNaClAlignment bundle. */
1750 *tramp_size = ALIGN_TO ((*tramp_size), kNaClAlignment);
1751 #endif
1752
1753 #if defined(__default_codegen__)
1754 g_free (buf);
1755 #elif defined(__native_client_codegen__)
1756 g_free (buf_alloc);
1757 #endif
1758
1759 #elif defined(TARGET_X86)
1760 guint8 *buf, *code;
1761 #ifdef __native_client_codegen__
1762 guint8 *buf_alloc;
1763 #endif
1764 guint8 *labels [16];
1765
1766 #if defined(__default_codegen__)
1767 code = buf = g_malloc (256);
1768 #elif defined(__native_client_codegen__)
1769 buf_alloc = g_malloc (256 + kNaClAlignment);
1770 code = buf = ((guint)buf_alloc + kNaClAlignment) & ~kNaClAlignmentMask;
1771 #endif
1772
1773 /* Allocate a temporary stack slot */
1774 x86_push_reg (code, X86_EAX);
1775 /* Save EAX */
1776 x86_push_reg (code, X86_EAX);
1777
1778 /* Load mscorlib got address */
1779 x86_mov_reg_membase (code, X86_EAX, MONO_ARCH_GOT_REG, sizeof (gpointer), 4);
1780 /* Load arg */
1781 x86_mov_reg_membase (code, X86_EAX, X86_EAX, offset * sizeof (gpointer), 4);
1782
1783 labels [0] = code;
1784 x86_alu_membase_imm (code, X86_CMP, X86_EAX, 0, 0);
1785 labels [1] = code;
1786 x86_branch8 (code, X86_CC_Z, FALSE, 0);
1787
1788 /* Check key */
1789 x86_alu_membase_reg (code, X86_CMP, X86_EAX, 0, MONO_ARCH_IMT_REG);
1790 labels [2] = code;
1791 x86_branch8 (code, X86_CC_Z, FALSE, 0);
1792
1793 /* Loop footer */
1794 x86_alu_reg_imm (code, X86_ADD, X86_EAX, 2 * sizeof (gpointer));
1795 x86_jump_code (code, labels [0]);
1796
1797 /* Match */
1798 mono_x86_patch (labels [2], code);
1799 x86_mov_reg_membase (code, X86_EAX, X86_EAX, sizeof (gpointer), 4);
1800 x86_mov_reg_membase (code, X86_EAX, X86_EAX, 0, 4);
1801 /* Save the target address to the temporary stack location */
1802 x86_mov_membase_reg (code, X86_ESP, 4, X86_EAX, 4);
1803 /* Restore EAX */
1804 x86_pop_reg (code, X86_EAX);
1805 /* Jump to the target address */
1806 x86_ret (code);
1807
1808 /* No match */
1809 mono_x86_patch (labels [1], code);
1810 /* Load fail tramp */
1811 x86_mov_reg_membase (code, X86_EAX, X86_EAX, sizeof (gpointer), 4);
1812 x86_alu_membase_imm (code, X86_CMP, X86_EAX, 0, 0);
1813 labels [3] = code;
1814 x86_branch8 (code, X86_CC_Z, FALSE, 0);
1815 /* Jump to fail tramp */
1816 x86_mov_membase_reg (code, X86_ESP, 4, X86_EAX, 4);
1817 x86_pop_reg (code, X86_EAX);
1818 x86_ret (code);
1819
1820 /* Fail */
1821 mono_x86_patch (labels [3], code);
1822 x86_breakpoint (code);
1823
1824 #ifdef __native_client_codegen__
1825 {
1826 /* emit nops to next 32 byte alignment */
1827 int a = (~kNaClAlignmentMask) & ((code - buf) + kNaClAlignment - 1);
1828 while (code < (buf + a)) x86_nop(code);
1829 }
1830 #endif
1831 emit_bytes (acfg, buf, code - buf);
1832
1833 *tramp_size = code - buf;
1834
1835 #if defined(__default_codegen__)
1836 g_free (buf);
1837 #elif defined(__native_client_codegen__)
1838 g_free (buf_alloc);
1839 #endif
1840
1841 #elif defined(TARGET_ARM)
1842 guint8 buf [128];
1843 guint8 *code, *code2, *labels [16];
1844
1845 code = buf;
1846
1847 /* The IMT method is in v5 */
1848
1849 /* Need at least two free registers, plus a slot for storing the pc */
1850 ARM_PUSH (code, (1 << ARMREG_R0)|(1 << ARMREG_R1)|(1 << ARMREG_R2));
1851 labels [0] = code;
1852 /* Load the parameter from the GOT */
1853 ARM_LDR_IMM (code, ARMREG_R0, ARMREG_PC, 0);
1854 ARM_LDR_REG_REG (code, ARMREG_R0, ARMREG_PC, ARMREG_R0);
1855
1856 labels [1] = code;
1857 ARM_LDR_IMM (code, ARMREG_R1, ARMREG_R0, 0);
1858 ARM_CMP_REG_REG (code, ARMREG_R1, ARMREG_V5);
1859 labels [2] = code;
1860 ARM_B_COND (code, ARMCOND_EQ, 0);
1861
1862 /* End-of-loop check */
1863 ARM_CMP_REG_IMM (code, ARMREG_R1, 0, 0);
1864 labels [3] = code;
1865 ARM_B_COND (code, ARMCOND_EQ, 0);
1866
1867 /* Loop footer */
1868 ARM_ADD_REG_IMM8 (code, ARMREG_R0, ARMREG_R0, sizeof (gpointer) * 2);
1869 labels [4] = code;
1870 ARM_B (code, 0);
1871 arm_patch (labels [4], labels [1]);
1872
1873 /* Match */
1874 arm_patch (labels [2], code);
1875 ARM_LDR_IMM (code, ARMREG_R0, ARMREG_R0, 4);
1876 ARM_LDR_IMM (code, ARMREG_R0, ARMREG_R0, 0);
1877 /* Save it to the third stack slot */
1878 ARM_STR_IMM (code, ARMREG_R0, ARMREG_SP, 8);
1879 /* Restore the registers and branch */
1880 ARM_POP (code, (1 << ARMREG_R0)|(1 << ARMREG_R1)|(1 << ARMREG_PC));
1881
1882 /* No match */
1883 arm_patch (labels [3], code);
1884 ARM_LDR_IMM (code, ARMREG_R0, ARMREG_R0, 4);
1885 ARM_STR_IMM (code, ARMREG_R0, ARMREG_SP, 8);
1886 ARM_POP (code, (1 << ARMREG_R0)|(1 << ARMREG_R1)|(1 << ARMREG_PC));
1887
1888 /* Fixup offset */
1889 code2 = labels [0];
1890 ARM_LDR_IMM (code2, ARMREG_R0, ARMREG_PC, (code - (labels [0] + 8)));
1891
1892 emit_bytes (acfg, buf, code - buf);
1893 emit_symbol_diff (acfg, acfg->got_symbol, ".", (offset * sizeof (gpointer)) + (code - (labels [0] + 8)) - 4);
1894
1895 *tramp_size = code - buf + 4;
1896 #elif defined(TARGET_ARM64)
1897 arm64_emit_imt_thunk (acfg, offset, tramp_size);
1898 #elif defined(TARGET_POWERPC)
1899 guint8 buf [128];
1900 guint8 *code, *labels [16];
1901
1902 code = buf;
1903
1904 /* Load the mscorlib got address */
1905 ppc_ldptr (code, ppc_r11, sizeof (gpointer), ppc_r30);
1906 /* Load the parameter from the GOT */
1907 ppc_load (code, ppc_r0, offset * sizeof (gpointer));
1908 ppc_ldptr_indexed (code, ppc_r11, ppc_r11, ppc_r0);
1909
1910 /* Load and check key */
1911 labels [1] = code;
1912 ppc_ldptr (code, ppc_r0, 0, ppc_r11);
1913 ppc_cmp (code, 0, sizeof (gpointer) == 8 ? 1 : 0, ppc_r0, MONO_ARCH_IMT_REG);
1914 labels [2] = code;
1915 ppc_bc (code, PPC_BR_TRUE, PPC_BR_EQ, 0);
1916
1917 /* End-of-loop check */
1918 ppc_cmpi (code, 0, sizeof (gpointer) == 8 ? 1 : 0, ppc_r0, 0);
1919 labels [3] = code;
1920 ppc_bc (code, PPC_BR_TRUE, PPC_BR_EQ, 0);
1921
1922 /* Loop footer */
1923 ppc_addi (code, ppc_r11, ppc_r11, 2 * sizeof (gpointer));
1924 labels [4] = code;
1925 ppc_b (code, 0);
1926 mono_ppc_patch (labels [4], labels [1]);
1927
1928 /* Match */
1929 mono_ppc_patch (labels [2], code);
1930 ppc_ldptr (code, ppc_r11, sizeof (gpointer), ppc_r11);
1931 /* r11 now contains the value of the vtable slot */
1932 /* this is not a function descriptor on ppc64 */
1933 ppc_ldptr (code, ppc_r11, 0, ppc_r11);
1934 ppc_mtctr (code, ppc_r11);
1935 ppc_bcctr (code, PPC_BR_ALWAYS, 0);
1936
1937 /* Fail */
1938 mono_ppc_patch (labels [3], code);
1939 /* FIXME: */
1940 ppc_break (code);
1941
1942 *tramp_size = code - buf;
1943
1944 emit_bytes (acfg, buf, code - buf);
1945 #else
1946 g_assert_not_reached ();
1947 #endif
1948 }
1949
1950 /*
1951 * arch_emit_gsharedvt_arg_trampoline:
1952 *
1953 * Emit code for a gsharedvt arg trampoline. OFFSET is the offset of the first of
1954 * two GOT slots which contain the argument, and the code to jump to.
1955 * TRAMP_SIZE is set to the size of the emitted trampoline.
1956 * These kinds of trampolines cannot be enumerated statically, since there could
1957 * be one trampoline per method instantiation, so we emit the same code for all
1958 * trampolines, and parameterize them using two GOT slots.
1959 */
1960 static void
1961 arch_emit_gsharedvt_arg_trampoline (MonoAotCompile *acfg, int offset, int *tramp_size)
1962 {
1963 #if defined(TARGET_X86)
1964 guint8 buf [128];
1965 guint8 *code;
1966
1967 /* Similar to the PPC code above */
1968
1969 g_assert (MONO_ARCH_RGCTX_REG != X86_ECX);
1970
1971 code = buf;
1972 /* Load mscorlib got address */
1973 x86_mov_reg_membase (code, X86_ECX, MONO_ARCH_GOT_REG, sizeof (gpointer), 4);
1974 /* Load arg */
1975 x86_mov_reg_membase (code, X86_EAX, X86_ECX, offset * sizeof (gpointer), 4);
1976 /* Branch to the target address */
1977 x86_jump_membase (code, X86_ECX, (offset + 1) * sizeof (gpointer));
1978
1979 #ifdef __native_client_codegen__
1980 {
1981 /* emit nops to next 32 byte alignment */
1982 int a = (~kNaClAlignmentMask) & ((code - buf) + kNaClAlignment - 1);
1983 while (code < (buf + a)) x86_nop(code);
1984 }
1985 #endif
1986
1987 emit_bytes (acfg, buf, code - buf);
1988
1989 *tramp_size = NACL_SIZE (15, kNaClAlignment);
1990 g_assert (code - buf == *tramp_size);
1991 #elif defined(TARGET_ARM)
1992 guint8 buf [128];
1993 guint8 *code;
1994
1995 /* The same as mono_arch_get_gsharedvt_arg_trampoline (), but for AOT */
1996 /* Similar to arch_emit_specific_trampoline () */
1997 *tramp_size = 24;
1998 code = buf;
1999 ARM_PUSH (code, (1 << ARMREG_R0) | (1 << ARMREG_R1) | (1 << ARMREG_R2) | (1 << ARMREG_R3));
2000 ARM_LDR_IMM (code, ARMREG_R1, ARMREG_PC, 8);
2001 /* Load the arg value from the GOT */
2002 ARM_LDR_REG_REG (code, ARMREG_R0, ARMREG_PC, ARMREG_R1);
2003 /* Load the addr from the GOT */
2004 ARM_LDR_REG_REG (code, ARMREG_R1, ARMREG_PC, ARMREG_R1);
2005 /* Branch to it */
2006 ARM_BX (code, ARMREG_R1);
2007
2008 g_assert (code - buf == 20);
2009
2010 /* Emit it */
2011 emit_bytes (acfg, buf, code - buf);
2012 emit_symbol_diff (acfg, acfg->got_symbol, ".", (offset * sizeof (gpointer)) + 4);
2013 #elif defined(TARGET_ARM64)
2014 arm64_emit_gsharedvt_arg_trampoline (acfg, offset, tramp_size);
2015 #else
2016 g_assert_not_reached ();
2017 #endif
2018 }
2019
2020 static void
2021 arch_emit_autoreg (MonoAotCompile *acfg, char *symbol)
2022 {
2023 #if defined(TARGET_POWERPC) && defined(__mono_ilp32__)
2024 /* Based on code generated by gcc */
2025 emit_unset_mode (acfg);
2026
2027 fprintf (acfg->fp,
2028 #if defined(_MSC_VER) || defined(MONO_CROSS_COMPILE)
2029 ".section .ctors,\"aw\",@progbits\n"
2030 ".align 2\n"
2031 ".globl %s\n"
2032 ".long %s\n"
2033 ".section .opd,\"aw\"\n"
2034 ".align 2\n"
2035 "%s:\n"
2036 ".long .%s,.TOC.@tocbase32\n"
2037 ".size %s,.-%s\n"
2038 ".section .text\n"
2039 ".type .%s,@function\n"
2040 ".align 2\n"
2041 ".%s:\n", symbol, symbol, symbol, symbol, symbol, symbol, symbol, symbol);
2042 #else
2043 ".section .ctors,\"aw\",@progbits\n"
2044 ".align 2\n"
2045 ".globl %1$s\n"
2046 ".long %1$s\n"
2047 ".section .opd,\"aw\"\n"
2048 ".align 2\n"
2049 "%1$s:\n"
2050 ".long .%1$s,.TOC.@tocbase32\n"
2051 ".size %1$s,.-%1$s\n"
2052 ".section .text\n"
2053 ".type .%1$s,@function\n"
2054 ".align 2\n"
2055 ".%1$s:\n", symbol);
2056 #endif
2057
2058
2059 fprintf (acfg->fp,
2060 "stdu 1,-128(1)\n"
2061 "mflr 0\n"
2062 "std 31,120(1)\n"
2063 "std 0,144(1)\n"
2064
2065 ".Lautoreg:\n"
2066 "lis 3, .Lglobals@h\n"
2067 "ori 3, 3, .Lglobals@l\n"
2068 "bl .mono_aot_register_module\n"
2069 "ld 11,0(1)\n"
2070 "ld 0,16(11)\n"
2071 "mtlr 0\n"
2072 "ld 31,-8(11)\n"
2073 "mr 1,11\n"
2074 "blr\n"
2075 );
2076 #if defined(_MSC_VER) || defined(MONO_CROSS_COMPILE)
2077 fprintf (acfg->fp,
2078 ".size .%s,.-.%s\n", symbol, symbol);
2079 #else
2080 fprintf (acfg->fp,
2081 ".size .%1$s,.-.%1$s\n", symbol);
2082 #endif
2083 #else
2084 #endif
2085 }
2086
2087 /* END OF ARCH SPECIFIC CODE */
2088
2089 static guint32
2090 mono_get_field_token (MonoClassField *field)
2091 {
2092 MonoClass *klass = field->parent;
2093 int i;
2094
2095 for (i = 0; i < klass->field.count; ++i) {
2096 if (field == &klass->fields [i])
2097 return MONO_TOKEN_FIELD_DEF | (klass->field.first + 1 + i);
2098 }
2099
2100 g_assert_not_reached ();
2101 return 0;
2102 }
2103
2104 static inline void
2105 encode_value (gint32 value, guint8 *buf, guint8 **endbuf)
2106 {
2107 guint8 *p = buf;
2108
2109 //printf ("ENCODE: %d 0x%x.\n", value, value);
2110
2111 /*
2112 * Same encoding as the one used in the metadata, extended to handle values
2113 * greater than 0x1fffffff.
2114 */
2115 if ((value >= 0) && (value <= 127))
2116 *p++ = value;
2117 else if ((value >= 0) && (value <= 16383)) {
2118 p [0] = 0x80 | (value >> 8);
2119 p [1] = value & 0xff;
2120 p += 2;
2121 } else if ((value >= 0) && (value <= 0x1fffffff)) {
2122 p [0] = (value >> 24) | 0xc0;
2123 p [1] = (value >> 16) & 0xff;
2124 p [2] = (value >> 8) & 0xff;
2125 p [3] = value & 0xff;
2126 p += 4;
2127 }
2128 else {
2129 p [0] = 0xff;
2130 p [1] = (value >> 24) & 0xff;
2131 p [2] = (value >> 16) & 0xff;
2132 p [3] = (value >> 8) & 0xff;
2133 p [4] = value & 0xff;
2134 p += 5;
2135 }
2136 if (endbuf)
2137 *endbuf = p;
2138 }
2139
2140 static void
2141 stream_init (MonoDynamicStream *sh)
2142 {
2143 sh->index = 0;
2144 sh->alloc_size = 4096;
2145 sh->data = g_malloc (4096);
2146
2147 /* So offsets are > 0 */
2148 sh->data [0] = 0;
2149 sh->index ++;
2150 }
2151
2152 static void
2153 make_room_in_stream (MonoDynamicStream *stream, int size)
2154 {
2155 if (size <= stream->alloc_size)
2156 return;
2157
2158 while (stream->alloc_size <= size) {
2159 if (stream->alloc_size < 4096)
2160 stream->alloc_size = 4096;
2161 else
2162 stream->alloc_size *= 2;
2163 }
2164
2165 stream->data = g_realloc (stream->data, stream->alloc_size);
2166 }
2167
2168 static guint32
2169 add_stream_data (MonoDynamicStream *stream, const char *data, guint32 len)
2170 {
2171 guint32 idx;
2172
2173 make_room_in_stream (stream, stream->index + len);
2174 memcpy (stream->data + stream->index, data, len);
2175 idx = stream->index;
2176 stream->index += len;
2177 return idx;
2178 }
2179
2180 /*
2181 * add_to_blob:
2182 *
2183 * Add data to the binary blob inside the aot image. Returns the offset inside the
2184 * blob where the data was stored.
2185 */
2186 static guint32
2187 add_to_blob (MonoAotCompile *acfg, const guint8 *data, guint32 data_len)
2188 {
2189 if (acfg->blob.alloc_size == 0)
2190 stream_init (&acfg->blob);
2191
2192 return add_stream_data (&acfg->blob, (char*)data, data_len);
2193 }
2194
2195 static guint32
2196 add_to_blob_aligned (MonoAotCompile *acfg, const guint8 *data, guint32 data_len, guint32 align)
2197 {
2198 char buf [4] = {0};
2199 guint32 count;
2200
2201 if (acfg->blob.alloc_size == 0)
2202 stream_init (&acfg->blob);
2203
2204 count = acfg->blob.index % align;
2205
2206 /* we assume the stream data will be aligned */
2207 if (count)
2208 add_stream_data (&acfg->blob, buf, 4 - count);
2209
2210 return add_stream_data (&acfg->blob, (char*)data, data_len);
2211 }
2212
2213 /*
2214 * emit_offset_table:
2215 *
2216 * Emit a table of increasing offsets in a compact form using differential encoding.
2217 * There is an index entry for each GROUP_SIZE number of entries. The greater the
2218 * group size, the more compact the table becomes, but the slower it becomes to compute
2219 * a given entry. Returns the size of the table.
2220 */
2221 static guint32
2222 emit_offset_table (MonoAotCompile *acfg, int noffsets, int group_size, gint32 *offsets)
2223 {
2224 gint32 current_offset;
2225 int i, buf_size, ngroups, index_entry_size;
2226 guint8 *p, *buf;
2227 guint32 *index_offsets;
2228
2229 ngroups = (noffsets + (group_size - 1)) / group_size;
2230
2231 index_offsets = g_new0 (guint32, ngroups);
2232
2233 buf_size = noffsets * 4;
2234 p = buf = g_malloc0 (buf_size);
2235
2236 current_offset = 0;
2237 for (i = 0; i < noffsets; ++i) {
2238 //printf ("D: %d -> %d\n", i, offsets [i]);
2239 if ((i % group_size) == 0) {
2240 index_offsets [i / group_size] = p - buf;
2241 /* Emit the full value for these entries */
2242 encode_value (offsets [i], p, &p);
2243 } else {
2244 /* The offsets are allowed to be non-increasing */
2245 //g_assert (offsets [i] >= current_offset);
2246 encode_value (offsets [i] - current_offset, p, &p);
2247 }
2248 current_offset = offsets [i];
2249 }
2250
2251 if (ngroups && index_offsets [ngroups - 1] < 65000)
2252 index_entry_size = 2;
2253 else
2254 index_entry_size = 4;
2255
2256 /* Emit the header */
2257 emit_int32 (acfg, noffsets);
2258 emit_int32 (acfg, group_size);
2259 emit_int32 (acfg, ngroups);
2260 emit_int32 (acfg, index_entry_size);
2261
2262 /* Emit the index */
2263 for (i = 0; i < ngroups; ++i) {
2264 if (index_entry_size == 2)
2265 emit_int16 (acfg, index_offsets [i]);
2266 else
2267 emit_int32 (acfg, index_offsets [i]);
2268 }
2269
2270 /* Emit the data */
2271 emit_bytes (acfg, buf, p - buf);
2272
2273 return (int)(p - buf) + (ngroups * 4);
2274 }
2275
2276 static guint32
2277 get_image_index (MonoAotCompile *cfg, MonoImage *image)
2278 {
2279 guint32 index;
2280
2281 index = GPOINTER_TO_UINT (g_hash_table_lookup (cfg->image_hash, image));
2282 if (index)
2283 return index - 1;
2284 else {
2285 index = g_hash_table_size (cfg->image_hash);
2286 g_hash_table_insert (cfg->image_hash, image, GUINT_TO_POINTER (index + 1));
2287 g_ptr_array_add (cfg->image_table, image);
2288 return index;
2289 }
2290 }
2291
2292 static guint32
2293 find_typespec_for_class (MonoAotCompile *acfg, MonoClass *klass)
2294 {
2295 int i;
2296 int len = acfg->image->tables [MONO_TABLE_TYPESPEC].rows;
2297
2298 /* FIXME: Search referenced images as well */
2299 if (!acfg->typespec_classes) {
2300 acfg->typespec_classes = mono_mempool_alloc0 (acfg->mempool, sizeof (MonoClass*) * len);
2301 for (i = 0; i < len; ++i) {
2302 acfg->typespec_classes [i] = mono_class_get_full (acfg->image, MONO_TOKEN_TYPE_SPEC | (i + 1), NULL);
2303 }
2304 }
2305 for (i = 0; i < len; ++i) {
2306 if (acfg->typespec_classes [i] == klass)
2307 break;
2308 }
2309
2310 if (i < len)
2311 return MONO_TOKEN_TYPE_SPEC | (i + 1);
2312 else
2313 return 0;
2314 }
2315
2316 static void
2317 encode_method_ref (MonoAotCompile *acfg, MonoMethod *method, guint8 *buf, guint8 **endbuf);
2318
2319 static void
2320 encode_klass_ref (MonoAotCompile *acfg, MonoClass *klass, guint8 *buf, guint8 **endbuf);
2321
2322 static void
2323 encode_ginst (MonoAotCompile *acfg, MonoGenericInst *inst, guint8 *buf, guint8 **endbuf);
2324
2325 static void
2326 encode_type (MonoAotCompile *acfg, MonoType *t, guint8 *buf, guint8 **endbuf);
2327
2328 static void
2329 encode_klass_ref_inner (MonoAotCompile *acfg, MonoClass *klass, guint8 *buf, guint8 **endbuf)
2330 {
2331 guint8 *p = buf;
2332
2333 /*
2334 * The encoding begins with one of the MONO_AOT_TYPEREF values, followed by additional
2335 * information.
2336 */
2337
2338 if (klass->generic_class) {
2339 guint32 token;
2340 g_assert (klass->type_token);
2341
2342 /* Find a typespec for a class if possible */
2343 token = find_typespec_for_class (acfg, klass);
2344 if (token) {
2345 encode_value (MONO_AOT_TYPEREF_TYPESPEC_TOKEN, p, &p);
2346 encode_value (token, p, &p);
2347 } else {
2348 MonoClass *gclass = klass->generic_class->container_class;
2349 MonoGenericInst *inst = klass->generic_class->context.class_inst;
2350 static int count = 0;
2351 guint8 *p1 = p;
2352
2353 encode_value (MONO_AOT_TYPEREF_GINST, p, &p);
2354 encode_klass_ref (acfg, gclass, p, &p);
2355 encode_ginst (acfg, inst, p, &p);
2356
2357 count += p - p1;
2358 }
2359 } else if (klass->type_token) {
2360 int iindex = get_image_index (acfg, klass->image);
2361
2362 g_assert (mono_metadata_token_code (klass->type_token) == MONO_TOKEN_TYPE_DEF);
2363 if (iindex == 0) {
2364 encode_value (MONO_AOT_TYPEREF_TYPEDEF_INDEX, p, &p);
2365 encode_value (klass->type_token - MONO_TOKEN_TYPE_DEF, p, &p);
2366 } else {
2367 encode_value (MONO_AOT_TYPEREF_TYPEDEF_INDEX_IMAGE, p, &p);
2368 encode_value (klass->type_token - MONO_TOKEN_TYPE_DEF, p, &p);
2369 encode_value (get_image_index (acfg, klass->image), p, &p);
2370 }
2371 } else if ((klass->byval_arg.type == MONO_TYPE_VAR) || (klass->byval_arg.type == MONO_TYPE_MVAR)) {
2372 MonoGenericContainer *container = mono_type_get_generic_param_owner (&klass->byval_arg);
2373 MonoGenericParam *par = klass->byval_arg.data.generic_param;
2374
2375 encode_value (MONO_AOT_TYPEREF_VAR, p, &p);
2376 encode_value (klass->byval_arg.type, p, &p);
2377 encode_value (mono_type_get_generic_param_num (&klass->byval_arg), p, &p);
2378
2379 encode_value (container ? 1 : 0, p, &p);
2380 if (container) {
2381 encode_value (container->is_method, p, &p);
2382 g_assert (par->serial == 0);
2383 if (container->is_method)
2384 encode_method_ref (acfg, container->owner.method, p, &p);
2385 else
2386 encode_klass_ref (acfg, container->owner.klass, p, &p);
2387 } else {
2388 encode_value (par->serial, p, &p);
2389 }
2390 } else if (klass->byval_arg.type == MONO_TYPE_PTR) {
2391 encode_value (MONO_AOT_TYPEREF_PTR, p, &p);
2392 encode_type (acfg, &klass->byval_arg, p, &p);
2393 } else {
2394 /* Array class */
2395 g_assert (klass->rank > 0);
2396 encode_value (MONO_AOT_TYPEREF_ARRAY, p, &p);
2397 encode_value (klass->rank, p, &p);
2398 encode_klass_ref (acfg, klass->element_class, p, &p);
2399 }
2400 *endbuf = p;
2401 }
2402
2403 /*
2404 * encode_klass_ref:
2405 *
2406 * Encode a reference to KLASS. We use our home-grown encoding instead of the
2407 * standard metadata encoding.
2408 */
2409 static void
2410 encode_klass_ref (MonoAotCompile *acfg, MonoClass *klass, guint8 *buf, guint8 **endbuf)
2411 {
2412 gboolean shared = FALSE;
2413
2414 /*
2415 * The encoding of generic instances is large so emit them only once.
2416 */
2417 if (klass->generic_class) {
2418 guint32 token;
2419 g_assert (klass->type_token);
2420
2421 /* Find a typespec for a class if possible */
2422 token = find_typespec_for_class (acfg, klass);
2423 if (!token)
2424 shared = TRUE;
2425 } else if ((klass->byval_arg.type == MONO_TYPE_VAR) || (klass->byval_arg.type == MONO_TYPE_MVAR)) {
2426 shared = TRUE;
2427 }
2428
2429 if (shared) {
2430 guint offset = GPOINTER_TO_UINT (g_hash_table_lookup (acfg->klass_blob_hash, klass));
2431 guint8 *buf2, *p;
2432
2433 if (!offset) {
2434 buf2 = g_malloc (1024);
2435 p = buf2;
2436
2437 encode_klass_ref_inner (acfg, klass, p, &p);
2438 g_assert (p - buf2 < 1024);
2439
2440 offset = add_to_blob (acfg, buf2, p - buf2);
2441 g_free (buf2);
2442
2443 g_hash_table_insert (acfg->klass_blob_hash, klass, GUINT_TO_POINTER (offset + 1));
2444 } else {
2445 offset --;
2446 }
2447
2448 p = buf;
2449 encode_value (MONO_AOT_TYPEREF_BLOB_INDEX, p, &p);
2450 encode_value (offset, p, &p);
2451 *endbuf = p;
2452 return;
2453 }
2454
2455 encode_klass_ref_inner (acfg, klass, buf, endbuf);
2456 }
2457
2458 static void
2459 encode_field_info (MonoAotCompile *cfg, MonoClassField *field, guint8 *buf, guint8 **endbuf)
2460 {
2461 guint32 token = mono_get_field_token (field);
2462 guint8 *p = buf;
2463
2464 encode_klass_ref (cfg, field->parent, p, &p);
2465 g_assert (mono_metadata_token_code (token) == MONO_TOKEN_FIELD_DEF);
2466 encode_value (token - MONO_TOKEN_FIELD_DEF, p, &p);
2467 *endbuf = p;
2468 }
2469
2470 static void
2471 encode_ginst (MonoAotCompile *acfg, MonoGenericInst *inst, guint8 *buf, guint8 **endbuf)
2472 {
2473 guint8 *p = buf;
2474 int i;
2475
2476 encode_value (inst->type_argc, p, &p);
2477 for (i = 0; i < inst->type_argc; ++i)
2478 encode_klass_ref (acfg, mono_class_from_mono_type (inst->type_argv [i]), p, &p);
2479 *endbuf = p;
2480 }
2481
2482 static void
2483 encode_generic_context (MonoAotCompile *acfg, MonoGenericContext *context, guint8 *buf, guint8 **endbuf)
2484 {
2485 guint8 *p = buf;
2486 MonoGenericInst *inst;
2487
2488 inst = context->class_inst;
2489 if (inst) {
2490 g_assert (inst->type_argc);
2491 encode_ginst (acfg, inst, p, &p);
2492 } else {
2493 encode_value (0, p, &p);
2494 }
2495 inst = context->method_inst;
2496 if (inst) {
2497 g_assert (inst->type_argc);
2498 encode_ginst (acfg, inst, p, &p);
2499 } else {
2500 encode_value (0, p, &p);
2501 }
2502 *endbuf = p;
2503 }
2504
2505 static void
2506 encode_type (MonoAotCompile *acfg, MonoType *t, guint8 *buf, guint8 **endbuf)
2507 {
2508 guint8 *p = buf;
2509
2510 g_assert (t->num_mods == 0);
2511 /* t->attrs can be ignored */
2512 //g_assert (t->attrs == 0);
2513
2514 if (t->pinned) {
2515 *p = MONO_TYPE_PINNED;
2516 ++p;
2517 }
2518 if (t->byref) {
2519 *p = MONO_TYPE_BYREF;
2520 ++p;
2521 }
2522
2523 *p = t->type;
2524 p ++;
2525
2526 switch (t->type) {
2527 case MONO_TYPE_VOID:
2528 case MONO_TYPE_BOOLEAN:
2529 case MONO_TYPE_CHAR:
2530 case MONO_TYPE_I1:
2531 case MONO_TYPE_U1:
2532 case MONO_TYPE_I2:
2533 case MONO_TYPE_U2:
2534 case MONO_TYPE_I4:
2535 case MONO_TYPE_U4:
2536 case MONO_TYPE_I8:
2537 case MONO_TYPE_U8:
2538 case MONO_TYPE_R4:
2539 case MONO_TYPE_R8:
2540 case MONO_TYPE_I:
2541 case MONO_TYPE_U:
2542 case MONO_TYPE_STRING:
2543 case MONO_TYPE_OBJECT:
2544 case MONO_TYPE_TYPEDBYREF:
2545 break;
2546 case MONO_TYPE_VALUETYPE:
2547 case MONO_TYPE_CLASS:
2548 encode_klass_ref (acfg, mono_class_from_mono_type (t), p, &p);
2549 break;
2550 case MONO_TYPE_SZARRAY:
2551 encode_klass_ref (acfg, t->data.klass, p, &p);
2552 break;
2553 case MONO_TYPE_PTR:
2554 encode_type (acfg, t->data.type, p, &p);
2555 break;
2556 case MONO_TYPE_GENERICINST: {
2557 MonoClass *gclass = t->data.generic_class->container_class;
2558 MonoGenericInst *inst = t->data.generic_class->context.class_inst;
2559
2560 encode_klass_ref (acfg, gclass, p, &p);
2561 encode_ginst (acfg, inst, p, &p);
2562 break;
2563 }
2564 case MONO_TYPE_ARRAY: {
2565 MonoArrayType *array = t->data.array;
2566 int i;
2567
2568 encode_klass_ref (acfg, array->eklass, p, &p);
2569 encode_value (array->rank, p, &p);
2570 encode_value (array->numsizes, p, &p);
2571 for (i = 0; i < array->numsizes; ++i)
2572 encode_value (array->sizes [i], p, &p);
2573 encode_value (array->numlobounds, p, &p);
2574 for (i = 0; i < array->numlobounds; ++i)
2575 encode_value (array->lobounds [i], p, &p);
2576 break;
2577 }
2578 case MONO_TYPE_VAR:
2579 case MONO_TYPE_MVAR:
2580 encode_klass_ref (acfg, mono_class_from_mono_type (t), p, &p);
2581 break;
2582 default:
2583 g_assert_not_reached ();
2584 }
2585
2586 *endbuf = p;
2587 }
2588
2589 static void
2590 encode_signature (MonoAotCompile *acfg, MonoMethodSignature *sig, guint8 *buf, guint8 **endbuf)
2591 {
2592 guint8 *p = buf;
2593 guint32 flags = 0;
2594 int i;
2595
2596 /* Similar to the metadata encoding */
2597 if (sig->generic_param_count)
2598 flags |= 0x10;
2599 if (sig->hasthis)
2600 flags |= 0x20;
2601 if (sig->explicit_this)
2602 flags |= 0x40;
2603 flags |= (sig->call_convention & 0x0F);
2604
2605 *p = flags;
2606 ++p;
2607 if (sig->generic_param_count)
2608 encode_value (sig->generic_param_count, p, &p);
2609 encode_value (sig->param_count, p, &p);
2610
2611 encode_type (acfg, sig->ret, p, &p);
2612 for (i = 0; i < sig->param_count; ++i) {
2613 if (sig->sentinelpos == i) {
2614 *p = MONO_TYPE_SENTINEL;
2615 ++p;
2616 }
2617 encode_type (acfg, sig->params [i], p, &p);
2618 }
2619
2620 *endbuf = p;
2621 }
2622
2623 #define MAX_IMAGE_INDEX 250
2624
2625 static void
2626 encode_method_ref (MonoAotCompile *acfg, MonoMethod *method, guint8 *buf, guint8 **endbuf)
2627 {
2628 guint32 image_index = get_image_index (acfg, method->klass->image);
2629 guint32 token = method->token;
2630 MonoJumpInfoToken *ji;
2631 guint8 *p = buf;
2632
2633 /*
2634 * The encoding for most methods is as follows:
2635 * - image index encoded as a leb128
2636 * - token index encoded as a leb128
2637 * Values of image index >= MONO_AOT_METHODREF_MIN are used to mark additional
2638 * types of method encodings.
2639 */
2640
2641 /* Mark methods which can't use aot trampolines because they need the further
2642 * processing in mono_magic_trampoline () which requires a MonoMethod*.
2643 */
2644 if ((method->is_generic && (method->flags & METHOD_ATTRIBUTE_VIRTUAL)) ||
2645 (method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED))
2646 encode_value ((MONO_AOT_METHODREF_NO_AOT_TRAMPOLINE << 24), p, &p);
2647
2648 if (method->wrapper_type) {
2649 encode_value ((MONO_AOT_METHODREF_WRAPPER << 24), p, &p);
2650
2651 encode_value (method->wrapper_type, p, &p);
2652
2653 switch (method->wrapper_type) {
2654 case MONO_WRAPPER_REMOTING_INVOKE:
2655 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK:
2656 case MONO_WRAPPER_XDOMAIN_INVOKE: {
2657 MonoMethod *m;
2658
2659 m = mono_marshal_method_from_wrapper (method);
2660 g_assert (m);
2661 encode_method_ref (acfg, m, p, &p);
2662 break;
2663 }
2664 case MONO_WRAPPER_PROXY_ISINST:
2665 case MONO_WRAPPER_LDFLD:
2666 case MONO_WRAPPER_LDFLDA:
2667 case MONO_WRAPPER_STFLD:
2668 case MONO_WRAPPER_ISINST: {
2669 WrapperInfo *info = mono_marshal_get_wrapper_info (method);
2670
2671 g_assert (info);
2672 encode_klass_ref (acfg, info->d.proxy.klass, p, &p);
2673 break;
2674 }
2675 case MONO_WRAPPER_LDFLD_REMOTE:
2676 case MONO_WRAPPER_STFLD_REMOTE:
2677 break;
2678 case MONO_WRAPPER_ALLOC: {
2679 AllocatorWrapperInfo *info = mono_marshal_get_wrapper_info (method);
2680
2681 /* The GC name is saved once in MonoAotFileInfo */
2682 g_assert (info->alloc_type != -1);
2683 encode_value (info->alloc_type, p, &p);
2684 break;
2685 }
2686 case MONO_WRAPPER_WRITE_BARRIER:
2687 break;
2688 case MONO_WRAPPER_STELEMREF: {
2689 WrapperInfo *info = mono_marshal_get_wrapper_info (method);
2690
2691 g_assert (info);
2692 encode_value (info->subtype, p, &p);
2693 if (info->subtype == WRAPPER_SUBTYPE_VIRTUAL_STELEMREF)
2694 encode_value (info->d.virtual_stelemref.kind, p, &p);
2695 break;
2696 }
2697 case MONO_WRAPPER_UNKNOWN: {
2698 WrapperInfo *info = mono_marshal_get_wrapper_info (method);
2699
2700 g_assert (info);
2701 encode_value (info->subtype, p, &p);
2702 if (info->subtype == WRAPPER_SUBTYPE_PTR_TO_STRUCTURE ||
2703 info->subtype == WRAPPER_SUBTYPE_STRUCTURE_TO_PTR)
2704 encode_klass_ref (acfg, method->klass, p, &p);
2705 else if (info->subtype == WRAPPER_SUBTYPE_SYNCHRONIZED_INNER)
2706 encode_method_ref (acfg, info->d.synchronized_inner.method, p, &p);
2707 else if (info->subtype == WRAPPER_SUBTYPE_ARRAY_ACCESSOR)
2708 encode_method_ref (acfg, info->d.array_accessor.method, p, &p);
2709 break;
2710 }
2711 case MONO_WRAPPER_MANAGED_TO_NATIVE: {
2712 WrapperInfo *info = mono_marshal_get_wrapper_info (method);
2713
2714 g_assert (info);
2715 encode_value (info->subtype, p, &p);
2716 if (info->subtype == WRAPPER_SUBTYPE_ICALL_WRAPPER) {
2717 strcpy ((char*)p, method->name);
2718 p += strlen (method->name) + 1;
2719 } else if (info->subtype == WRAPPER_SUBTYPE_NATIVE_FUNC_AOT) {
2720 encode_method_ref (acfg, info->d.managed_to_native.method, p, &p);
2721 } else {
2722 g_assert (info->subtype == WRAPPER_SUBTYPE_NONE || info->subtype == WRAPPER_SUBTYPE_PINVOKE);
2723 encode_method_ref (acfg, info->d.managed_to_native.method, p, &p);
2724 }
2725 break;
2726 }
2727 case MONO_WRAPPER_SYNCHRONIZED: {
2728 MonoMethod *m;
2729
2730 m = mono_marshal_method_from_wrapper (method);
2731 g_assert (m);
2732 g_assert (m != method);
2733 encode_method_ref (acfg, m, p, &p);
2734 break;
2735 }
2736 case MONO_WRAPPER_MANAGED_TO_MANAGED: {
2737 WrapperInfo *info = mono_marshal_get_wrapper_info (method);
2738
2739 g_assert (info);
2740 encode_value (info->subtype, p, &p);
2741
2742 if (info->subtype == WRAPPER_SUBTYPE_ELEMENT_ADDR) {
2743 encode_value (info->d.element_addr.rank, p, &p);
2744 encode_value (info->d.element_addr.elem_size, p, &p);
2745 } else if (info->subtype == WRAPPER_SUBTYPE_STRING_CTOR) {
2746 encode_method_ref (acfg, info->d.string_ctor.method, p, &p);
2747 } else {
2748 g_assert_not_reached ();
2749 }
2750 break;
2751 }
2752 case MONO_WRAPPER_CASTCLASS: {
2753 WrapperInfo *info = mono_marshal_get_wrapper_info (method);
2754
2755 g_assert (info);
2756 encode_value (info->subtype, p, &p);
2757 break;
2758 }
2759 case MONO_WRAPPER_RUNTIME_INVOKE: {
2760 WrapperInfo *info = mono_marshal_get_wrapper_info (method);
2761
2762 g_assert (info);
2763 encode_value (info->subtype, p, &p);
2764 if (info->subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_DIRECT || info->subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_VIRTUAL)
2765 encode_method_ref (acfg, info->d.runtime_invoke.method, p, &p);
2766 else if (info->subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_NORMAL)
2767 encode_signature (acfg, info->d.runtime_invoke.sig, p, &p);
2768 break;
2769 }
2770 case MONO_WRAPPER_DELEGATE_INVOKE:
2771 case MONO_WRAPPER_DELEGATE_BEGIN_INVOKE:
2772 case MONO_WRAPPER_DELEGATE_END_INVOKE: {
2773 if (method->is_inflated) {
2774 /* These wrappers are identified by their class */
2775 encode_value (1, p, &p);
2776 encode_klass_ref (acfg, method->klass, p, &p);
2777 } else {
2778 MonoMethodSignature *sig = mono_method_signature (method);
2779 WrapperInfo *info = mono_marshal_get_wrapper_info (method);
2780
2781 encode_value (0, p, &p);
2782 if (method->wrapper_type == MONO_WRAPPER_DELEGATE_INVOKE)
2783 encode_value (info ? info->subtype : 0, p, &p);
2784 encode_signature (acfg, sig, p, &p);
2785 }
2786 break;
2787 }
2788 case MONO_WRAPPER_NATIVE_TO_MANAGED: {
2789 WrapperInfo *info = mono_marshal_get_wrapper_info (method);
2790
2791 g_assert (info);
2792 encode_method_ref (acfg, info->d.native_to_managed.method, p, &p);
2793 encode_klass_ref (acfg, info->d.native_to_managed.klass, p, &p);
2794 break;
2795 }
2796 default:
2797 g_assert_not_reached ();
2798 }
2799 } else if (mono_method_signature (method)->is_inflated) {
2800 /*
2801 * This is a generic method, find the original token which referenced it and
2802 * encode that.
2803 * Obtain the token from information recorded by the JIT.
2804 */
2805 ji = g_hash_table_lookup (acfg->token_info_hash, method);
2806 if (ji) {
2807 image_index = get_image_index (acfg, ji->image);
2808 g_assert (image_index < MAX_IMAGE_INDEX);
2809 token = ji->token;
2810
2811 encode_value ((MONO_AOT_METHODREF_METHODSPEC << 24), p, &p);
2812 encode_value (image_index, p, &p);
2813 encode_value (token, p, &p);
2814 } else {
2815 MonoMethod *declaring;
2816 MonoGenericContext *context = mono_method_get_context (method);
2817
2818 g_assert (method->is_inflated);
2819 declaring = ((MonoMethodInflated*)method)->declaring;
2820
2821 /*
2822 * This might be a non-generic method of a generic instance, which
2823 * doesn't have a token since the reference is generated by the JIT
2824 * like Nullable:Box/Unbox, or by generic sharing.
2825 */
2826 encode_value ((MONO_AOT_METHODREF_GINST << 24), p, &p);
2827 /* Encode the klass */
2828 encode_klass_ref (acfg, method->klass, p, &p);
2829 /* Encode the method */
2830 image_index = get_image_index (acfg, method->klass->image);
2831 g_assert (image_index < MAX_IMAGE_INDEX);
2832 g_assert (declaring->token);
2833 token = declaring->token;
2834 g_assert (mono_metadata_token_table (token) == MONO_TABLE_METHOD);
2835 encode_value (image_index, p, &p);
2836 encode_value (token, p, &p);
2837 encode_generic_context (acfg, context, p, &p);
2838 }
2839 } else if (token == 0) {
2840 /* This might be a method of a constructed type like int[,].Set */
2841 /* Obtain the token from information recorded by the JIT */
2842 ji = g_hash_table_lookup (acfg->token_info_hash, method);
2843 if (ji) {
2844 image_index = get_image_index (acfg, ji->image);
2845 g_assert (image_index < MAX_IMAGE_INDEX);
2846 token = ji->token;
2847
2848 encode_value ((MONO_AOT_METHODREF_METHODSPEC << 24), p, &p);
2849 encode_value (image_index, p, &p);
2850 encode_value (token, p, &p);
2851 } else {
2852 /* Array methods */
2853 g_assert (method->klass->rank);
2854
2855 /* Encode directly */
2856 encode_value ((MONO_AOT_METHODREF_ARRAY << 24), p, &p);
2857 encode_klass_ref (acfg, method->klass, p, &p);
2858 if (!strcmp (method->name, ".ctor") && mono_method_signature (method)->param_count == method->klass->rank)
2859 encode_value (0, p, &p);
2860 else if (!strcmp (method->name, ".ctor") && mono_method_signature (method)->param_count == method->klass->rank * 2)
2861 encode_value (1, p, &p);
2862 else if (!strcmp (method->name, "Get"))
2863 encode_value (2, p, &p);
2864 else if (!strcmp (method->name, "Address"))
2865 encode_value (3, p, &p);
2866 else if (!strcmp (method->name, "Set"))
2867 encode_value (4, p, &p);
2868 else
2869 g_assert_not_reached ();
2870 }
2871 } else {
2872 g_assert (mono_metadata_token_table (token) == MONO_TABLE_METHOD);
2873
2874 if (image_index >= MONO_AOT_METHODREF_MIN) {
2875 encode_value ((MONO_AOT_METHODREF_LARGE_IMAGE_INDEX << 24), p, &p);
2876 encode_value (image_index, p, &p);
2877 encode_value (mono_metadata_token_index (token), p, &p);
2878 } else {
2879 encode_value ((image_index << 24) | mono_metadata_token_index (token), p, &p);
2880 }
2881 }
2882 *endbuf = p;
2883 }
2884
2885 static gint
2886 compare_patches (gconstpointer a, gconstpointer b)
2887 {
2888 int i, j;
2889
2890 i = (*(MonoJumpInfo**)a)->ip.i;
2891 j = (*(MonoJumpInfo**)b)->ip.i;
2892
2893 if (i < j)
2894 return -1;
2895 else
2896 if (i > j)
2897 return 1;
2898 else
2899 return 0;
2900 }
2901
2902 static G_GNUC_UNUSED char*
2903 patch_to_string (MonoJumpInfo *patch_info)
2904 {
2905 GString *str;
2906
2907 str = g_string_new ("");
2908
2909 g_string_append_printf (str, "%s(", get_patch_name (patch_info->type));
2910
2911 switch (patch_info->type) {
2912 case MONO_PATCH_INFO_VTABLE:
2913 mono_type_get_desc (str, &patch_info->data.klass->byval_arg, TRUE);
2914 break;
2915 default:
2916 break;
2917 }
2918 g_string_append_printf (str, ")");
2919 return g_string_free (str, FALSE);
2920 }
2921
2922 /*
2923 * is_plt_patch:
2924 *
2925 * Return whenever PATCH_INFO refers to a direct call, and thus requires a
2926 * PLT entry.
2927 */
2928 static inline gboolean
2929 is_plt_patch (MonoJumpInfo *patch_info)
2930 {
2931 switch (patch_info->type) {
2932 case MONO_PATCH_INFO_METHOD:
2933 case MONO_PATCH_INFO_INTERNAL_METHOD:
2934 case MONO_PATCH_INFO_JIT_ICALL_ADDR:
2935 case MONO_PATCH_INFO_ICALL_ADDR:
2936 case MONO_PATCH_INFO_CLASS_INIT:
2937 case MONO_PATCH_INFO_RGCTX_FETCH:
2938 case MONO_PATCH_INFO_GENERIC_CLASS_INIT:
2939 case MONO_PATCH_INFO_MONITOR_ENTER:
2940 case MONO_PATCH_INFO_MONITOR_EXIT:
2941 case MONO_PATCH_INFO_LLVM_IMT_TRAMPOLINE:
2942 return TRUE;
2943 default:
2944 return FALSE;
2945 }
2946 }
2947
2948 /*
2949 * get_plt_symbol:
2950 *
2951 * Return the symbol identifying the plt entry PLT_OFFSET.
2952 */
2953 static char*
2954 get_plt_symbol (MonoAotCompile *acfg, int plt_offset, MonoJumpInfo *patch_info)
2955 {
2956 #ifdef TARGET_MACH
2957 /*
2958 * The Apple linker reorganizes object files, so it doesn't like branches to local
2959 * labels, since those have no relocations.
2960 */
2961 return g_strdup_printf ("%sp_%d", acfg->llvm_label_prefix, plt_offset);
2962 #else
2963 return g_strdup_printf ("%sp_%d", acfg->temp_prefix, plt_offset);
2964 #endif
2965 }
2966
2967 /*
2968 * get_plt_entry:
2969 *
2970 * Return a PLT entry which belongs to the method identified by PATCH_INFO.
2971 */
2972 static MonoPltEntry*
2973 get_plt_entry (MonoAotCompile *acfg, MonoJumpInfo *patch_info)
2974 {
2975 MonoPltEntry *res;
2976
2977 if (!is_plt_patch (patch_info))
2978 return NULL;
2979
2980 if (!acfg->patch_to_plt_entry [patch_info->type])
2981 acfg->patch_to_plt_entry [patch_info->type] = g_hash_table_new (mono_patch_info_hash, mono_patch_info_equal);
2982 res = g_hash_table_lookup (acfg->patch_to_plt_entry [patch_info->type], patch_info);
2983
2984 // FIXME: This breaks the calculation of final_got_size
2985 if (!acfg->llvm && patch_info->type == MONO_PATCH_INFO_METHOD && (patch_info->data.method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED)) {
2986 /*
2987 * Allocate a separate PLT slot for each such patch, since some plt
2988 * entries will refer to the method itself, and some will refer to the
2989 * wrapper.
2990 */
2991 res = NULL;
2992 }
2993
2994 if (!res) {
2995 MonoJumpInfo *new_ji;
2996
2997 g_assert (!acfg->final_got_size);
2998
2999 new_ji = mono_patch_info_dup_mp (acfg->mempool, patch_info);
3000
3001 res = mono_mempool_alloc0 (acfg->mempool, sizeof (MonoPltEntry));
3002 res->plt_offset = acfg->plt_offset;
3003 res->ji = new_ji;
3004 res->symbol = get_plt_symbol (acfg, res->plt_offset, patch_info);
3005 if (acfg->aot_opts.write_symbols)
3006 res->debug_sym = get_plt_entry_debug_sym (acfg, res->ji, acfg->plt_entry_debug_sym_cache);
3007 if (res->debug_sym)
3008 res->llvm_symbol = g_strdup_printf ("%s_%s_llvm", res->symbol, res->debug_sym);
3009 else
3010 res->llvm_symbol = g_strdup_printf ("%s_llvm", res->symbol);
3011
3012 g_hash_table_insert (acfg->patch_to_plt_entry [new_ji->type], new_ji, res);
3013
3014 g_hash_table_insert (acfg->plt_offset_to_entry, GUINT_TO_POINTER (res->plt_offset), res);
3015
3016 //g_assert (mono_patch_info_equal (patch_info, new_ji));
3017 //mono_print_ji (patch_info); printf ("\n");
3018 //g_hash_table_print_stats (acfg->patch_to_plt_entry);
3019
3020 acfg->plt_offset ++;
3021 }
3022
3023 return res;
3024 }
3025
3026 /**
3027 * get_got_offset:
3028 *
3029 * Returns the offset of the GOT slot where the runtime object resulting from resolving
3030 * JI could be found if it exists, otherwise allocates a new one.
3031 */
3032 static guint32
3033 get_got_offset (MonoAotCompile *acfg, MonoJumpInfo *ji)
3034 {
3035 guint32 got_offset;
3036
3037 got_offset = GPOINTER_TO_UINT (g_hash_table_lookup (acfg->patch_to_got_offset_by_type [ji->type], ji));
3038 if (got_offset)
3039 return got_offset - 1;
3040
3041 got_offset = acfg->got_offset;
3042 acfg->got_offset ++;
3043
3044 if (acfg->final_got_size)
3045 g_assert (got_offset < acfg->final_got_size);
3046
3047 acfg->stats.got_slots ++;
3048 acfg->stats.got_slot_types [ji->type] ++;
3049
3050 g_hash_table_insert (acfg->patch_to_got_offset, ji, GUINT_TO_POINTER (got_offset + 1));
3051 g_hash_table_insert (acfg->patch_to_got_offset_by_type [ji->type], ji, GUINT_TO_POINTER (got_offset + 1));
3052 g_ptr_array_add (acfg->got_patches, ji);
3053
3054 return got_offset;
3055 }
3056
3057 /* Add a method to the list of methods which need to be emitted */
3058 static void
3059 add_method_with_index (MonoAotCompile *acfg, MonoMethod *method, int index, gboolean extra)
3060 {
3061 g_assert (method);
3062 if (!g_hash_table_lookup (acfg->method_indexes, method)) {
3063 g_ptr_array_add (acfg->methods, method);
3064 g_hash_table_insert (acfg->method_indexes, method, GUINT_TO_POINTER (index + 1));
3065 acfg->nmethods = acfg->methods->len + 1;
3066 }
3067
3068 if (method->wrapper_type || extra)
3069 g_ptr_array_add (acfg->extra_methods, method);
3070 }
3071
3072 static guint32
3073 get_method_index (MonoAotCompile *acfg, MonoMethod *method)
3074 {
3075 int index = GPOINTER_TO_UINT (g_hash_table_lookup (acfg->method_indexes, method));
3076
3077 g_assert (index);
3078
3079 return index - 1;
3080 }
3081
3082 static int
3083 add_method_full (MonoAotCompile *acfg, MonoMethod *method, gboolean extra, int depth)
3084 {
3085 int index;
3086
3087 index = GPOINTER_TO_UINT (g_hash_table_lookup (acfg->method_indexes, method));
3088 if (index)
3089 return index - 1;
3090
3091 index = acfg->method_index;
3092 add_method_with_index (acfg, method, index, extra);
3093
3094 g_ptr_array_add (acfg->method_order, GUINT_TO_POINTER (index));
3095
3096 g_hash_table_insert (acfg->method_depth, method, GUINT_TO_POINTER (depth));
3097
3098 acfg->method_index ++;
3099
3100 return index;
3101 }
3102
3103 static int
3104 add_method (MonoAotCompile *acfg, MonoMethod *method)
3105 {
3106 return add_method_full (acfg, method, FALSE, 0);
3107 }
3108
3109 static void
3110 add_extra_method_with_depth (MonoAotCompile *acfg, MonoMethod *method, int depth)
3111 {
3112 if (mono_method_is_generic_sharable_full (method, FALSE, TRUE, FALSE))
3113 method = mini_get_shared_method (method);
3114
3115 if (acfg->aot_opts.log_generics)
3116 printf ("%*sAdding method %s.\n", depth, "", mono_method_full_name (method, TRUE));
3117
3118 add_method_full (acfg, method, TRUE, depth);
3119 }
3120
3121 static void
3122 add_extra_method (MonoAotCompile *acfg, MonoMethod *method)
3123 {
3124 add_extra_method_with_depth (acfg, method, 0);
3125 }
3126
3127 static void
3128 add_jit_icall_wrapper (gpointer key, gpointer value, gpointer user_data)
3129 {
3130 MonoAotCompile *acfg = user_data;
3131 MonoJitICallInfo *callinfo = value;
3132 MonoMethod *wrapper;
3133 char *name;
3134
3135 if (!callinfo->sig)
3136 return;
3137
3138 name = g_strdup_printf ("__icall_wrapper_%s", callinfo->name);
3139 wrapper = mono_marshal_get_icall_wrapper (callinfo->sig, name, callinfo->func, check_for_pending_exc);
3140 g_free (name);
3141
3142 add_method (acfg, wrapper);
3143 }
3144
3145 static MonoMethod*
3146 get_runtime_invoke_sig (MonoMethodSignature *sig)
3147 {
3148 MonoMethodBuilder *mb;
3149 MonoMethod *m;
3150
3151 mb = mono_mb_new (mono_defaults.object_class, "FOO", MONO_WRAPPER_NONE);
3152 m = mono_mb_create_method (mb, sig, 16);
3153 return mono_marshal_get_runtime_invoke (m, FALSE);
3154 }
3155
3156 static gboolean
3157 can_marshal_struct (MonoClass *klass)
3158 {
3159 MonoClassField *field;
3160 gboolean can_marshal = TRUE;
3161 gpointer iter = NULL;
3162 MonoMarshalType *info;
3163 int i;
3164
3165 if ((klass->flags & TYPE_ATTRIBUTE_LAYOUT_MASK) == TYPE_ATTRIBUTE_AUTO_LAYOUT)
3166 return FALSE;
3167
3168 info = mono_marshal_load_type_info (klass);
3169
3170 /* Only allow a few field types to avoid asserts in the marshalling code */
3171 while ((field = mono_class_get_fields (klass, &iter))) {
3172 if ((field->type->attrs & FIELD_ATTRIBUTE_STATIC))
3173 continue;
3174
3175 switch (field->type->type) {
3176 case MONO_TYPE_I4:
3177 case MONO_TYPE_U4:
3178 case MONO_TYPE_I1:
3179 case MONO_TYPE_U1:
3180 case MONO_TYPE_BOOLEAN:
3181 case MONO_TYPE_I2:
3182 case MONO_TYPE_U2:
3183 case MONO_TYPE_CHAR:
3184 case MONO_TYPE_I8:
3185 case MONO_TYPE_U8:
3186 case MONO_TYPE_I:
3187 case MONO_TYPE_U:
3188 case MONO_TYPE_PTR:
3189 case MONO_TYPE_R4:
3190 case MONO_TYPE_R8:
3191 case MONO_TYPE_STRING:
3192 break;
3193 case MONO_TYPE_VALUETYPE:
3194 if (!mono_class_from_mono_type (field->type)->enumtype && !can_marshal_struct (mono_class_from_mono_type (field->type)))
3195 can_marshal = FALSE;
3196 break;
3197 case MONO_TYPE_SZARRAY: {
3198 gboolean has_mspec = FALSE;
3199
3200 if (info) {
3201 for (i = 0; i < info->num_fields; ++i) {
3202 if (info->fields [i].field == field && info->fields [i].mspec)
3203 has_mspec = TRUE;
3204 }
3205 }
3206 if (!has_mspec)
3207 can_marshal = FALSE;
3208 break;
3209 }
3210 default:
3211 can_marshal = FALSE;
3212 break;
3213 }
3214 }
3215
3216 /* Special cases */
3217 /* Its hard to compute whenever these can be marshalled or not */
3218 if (!strcmp (klass->name_space, "System.Net.NetworkInformation.MacOsStructs") && strcmp (klass->name, "sockaddr_dl"))
3219 return TRUE;
3220
3221 return can_marshal;
3222 }
3223
3224 static void
3225 create_gsharedvt_inst (MonoAotCompile *acfg, MonoMethod *method, MonoGenericContext *ctx)
3226 {
3227 /* Create a vtype instantiation */
3228 MonoGenericContext shared_context;
3229 MonoType **args;
3230 MonoGenericInst *inst;
3231 MonoGenericContainer *container;
3232 MonoClass **constraints;
3233 int i;
3234
3235 memset (ctx, 0, sizeof (MonoGenericContext));
3236
3237 if (method->klass->generic_container) {
3238 shared_context = method->klass->generic_container->context;
3239 inst = shared_context.class_inst;
3240
3241 args = g_new0 (MonoType*, inst->type_argc);
3242 for (i = 0; i < inst->type_argc; ++i) {
3243 args [i] = &mono_defaults.int_class->byval_arg;
3244 }
3245 ctx->class_inst = mono_metadata_get_generic_inst (inst->type_argc, args);
3246 }
3247 if (method->is_generic) {
3248 container = mono_method_get_generic_container (method);
3249 shared_context = container->context;
3250 inst = shared_context.method_inst;
3251
3252 args = g_new0 (MonoType*, inst->type_argc);
3253 for (i = 0; i < container->type_argc; ++i) {
3254 MonoGenericParamInfo *info = &container->type_params [i].info;
3255 gboolean ref_only = FALSE;
3256
3257 if (info && info->constraints) {
3258 constraints = info->constraints;
3259
3260 while (*constraints) {
3261 MonoClass *cklass = *constraints;
3262 if (!(cklass == mono_defaults.object_class || (cklass->image == mono_defaults.corlib && !strcmp (cklass->name, "ValueType"))))
3263 /* Inflaring the method with our vtype would not be valid */
3264 ref_only = TRUE;
3265 constraints ++;
3266 }
3267 }
3268
3269 if (ref_only)
3270 args [i] = &mono_defaults.object_class->byval_arg;
3271 else
3272 args [i] = &mono_defaults.int_class->byval_arg;
3273 }
3274 ctx->method_inst = mono_metadata_get_generic_inst (inst->type_argc, args);
3275 }
3276 }
3277
3278 static void
3279 add_wrappers (MonoAotCompile *acfg)
3280 {
3281 MonoMethod *method, *m;
3282 int i, j;
3283 MonoMethodSignature *sig, *csig;
3284 guint32 token;
3285
3286 /*
3287 * FIXME: Instead of AOTing all the wrappers, it might be better to redesign them
3288 * so there is only one wrapper of a given type, or inlining their contents into their
3289 * callers.
3290 */
3291 for (i = 0; i < acfg->image->tables [MONO_TABLE_METHOD].rows; ++i) {
3292 MonoMethod *method;
3293 guint32 token = MONO_TOKEN_METHOD_DEF | (i + 1);
3294 gboolean skip = FALSE;
3295
3296 method = mono_get_method (acfg->image, token, NULL);
3297
3298 if ((method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
3299 (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
3300 (method->flags & METHOD_ATTRIBUTE_ABSTRACT))
3301 skip = TRUE;
3302
3303 /* Skip methods which can not be handled by get_runtime_invoke () */
3304 sig = mono_method_signature (method);
3305 if (!sig)
3306 continue;
3307 if ((sig->ret->type == MONO_TYPE_PTR) ||
3308 (sig->ret->type == MONO_TYPE_TYPEDBYREF))
3309 skip = TRUE;
3310 if (mono_class_is_open_constructed_type (sig->ret))
3311 skip = TRUE;
3312
3313 for (j = 0; j < sig->param_count; j++) {
3314 if (sig->params [j]->type == MONO_TYPE_TYPEDBYREF)
3315 skip = TRUE;
3316 if (mono_class_is_open_constructed_type (sig->params [j]))
3317 skip = TRUE;
3318 }
3319
3320 #ifdef MONO_ARCH_DYN_CALL_SUPPORTED
3321 if (!mono_class_is_contextbound (method->klass)) {
3322 MonoDynCallInfo *info = mono_arch_dyn_call_prepare (sig);
3323 gboolean has_nullable = FALSE;
3324
3325 for (j = 0; j < sig->param_count; j++) {
3326 if (sig->params [j]->type == MONO_TYPE_GENERICINST && mono_class_is_nullable (mono_class_from_mono_type (sig->params [j])))
3327 has_nullable = TRUE;
3328 }
3329
3330 if (info && !has_nullable) {
3331 /* Supported by the dynamic runtime-invoke wrapper */
3332 skip = TRUE;
3333 g_free (info);
3334 }
3335 }
3336 #endif
3337
3338 if (!skip) {
3339 //printf ("%s\n", mono_method_full_name (method, TRUE));
3340 add_method (acfg, mono_marshal_get_runtime_invoke (method, FALSE));
3341 }
3342 }
3343
3344 if (strcmp (acfg->image->assembly->aname.name, "mscorlib") == 0) {
3345 MonoMethodDesc *desc;
3346 MonoMethod *orig_method;
3347 int nallocators;
3348
3349 /* Runtime invoke wrappers */
3350
3351 /* void runtime-invoke () [.cctor] */
3352 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 0);
3353 csig->ret = &mono_defaults.void_class->byval_arg;
3354 add_method (acfg, get_runtime_invoke_sig (csig));
3355
3356 /* void runtime-invoke () [Finalize] */
3357 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 0);
3358 csig->hasthis = 1;
3359 csig->ret = &mono_defaults.void_class->byval_arg;
3360 add_method (acfg, get_runtime_invoke_sig (csig));
3361
3362 /* void runtime-invoke (string) [exception ctor] */
3363 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 1);
3364 csig->hasthis = 1;
3365 csig->ret = &mono_defaults.void_class->byval_arg;
3366 csig->params [0] = &mono_defaults.string_class->byval_arg;
3367 add_method (acfg, get_runtime_invoke_sig (csig));
3368
3369 /* void runtime-invoke (string, string) [exception ctor] */
3370 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 2);
3371 csig->hasthis = 1;
3372 csig->ret = &mono_defaults.void_class->byval_arg;
3373 csig->params [0] = &mono_defaults.string_class->byval_arg;
3374 csig->params [1] = &mono_defaults.string_class->byval_arg;
3375 add_method (acfg, get_runtime_invoke_sig (csig));
3376
3377 /* string runtime-invoke () [Exception.ToString ()] */
3378 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 0);
3379 csig->hasthis = 1;
3380 csig->ret = &mono_defaults.string_class->byval_arg;
3381 add_method (acfg, get_runtime_invoke_sig (csig));
3382
3383 /* void runtime-invoke (string, Exception) [exception ctor] */
3384 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 2);
3385 csig->hasthis = 1;
3386 csig->ret = &mono_defaults.void_class->byval_arg;
3387 csig->params [0] = &mono_defaults.string_class->byval_arg;
3388 csig->params [1] = &mono_defaults.exception_class->byval_arg;
3389 add_method (acfg, get_runtime_invoke_sig (csig));
3390
3391 /* Assembly runtime-invoke (string, bool) [DoAssemblyResolve] */
3392 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 2);
3393 csig->hasthis = 1;
3394 csig->ret = &(mono_class_from_name (
3395 mono_defaults.corlib, "System.Reflection", "Assembly"))->byval_arg;
3396 csig->params [0] = &mono_defaults.string_class->byval_arg;
3397 csig->params [1] = &mono_defaults.boolean_class->byval_arg;
3398 add_method (acfg, get_runtime_invoke_sig (csig));
3399
3400 /* runtime-invoke used by finalizers */
3401 add_method (acfg, mono_marshal_get_runtime_invoke (mono_class_get_method_from_name_flags (mono_defaults.object_class, "Finalize", 0, 0), TRUE));
3402
3403 /* This is used by mono_runtime_capture_context () */
3404 method = mono_get_context_capture_method ();
3405 if (method)
3406 add_method (acfg, mono_marshal_get_runtime_invoke (method, FALSE));
3407
3408 #ifdef MONO_ARCH_DYN_CALL_SUPPORTED
3409 add_method (acfg, mono_marshal_get_runtime_invoke_dynamic ());
3410 #endif
3411
3412 /* stelemref */
3413 add_method (acfg, mono_marshal_get_stelemref ());
3414
3415 if (MONO_ARCH_HAVE_TLS_GET) {
3416 /* Managed Allocators */
3417 nallocators = mono_gc_get_managed_allocator_types ();
3418 for (i = 0; i < nallocators; ++i) {
3419 m = mono_gc_get_managed_allocator_by_type (i);
3420 if (m)
3421 add_method (acfg, m);
3422 }
3423
3424 /* Monitor Enter/Exit */
3425 desc = mono_method_desc_new ("Monitor:Enter(object,bool&)", FALSE);
3426 orig_method = mono_method_desc_search_in_class (desc, mono_defaults.monitor_class);
3427 /* This is a v4 method */
3428 if (orig_method) {
3429 method = mono_monitor_get_fast_path (orig_method);
3430 if (method)
3431 add_method (acfg, method);
3432 }
3433 mono_method_desc_free (desc);
3434
3435 desc = mono_method_desc_new ("Monitor:Exit(object)", FALSE);
3436 orig_method = mono_method_desc_search_in_class (desc, mono_defaults.monitor_class);
3437 g_assert (orig_method);
3438 mono_method_desc_free (desc);
3439 method = mono_monitor_get_fast_path (orig_method);
3440 if (method)
3441 add_method (acfg, method);
3442 }
3443
3444 /* Stelemref wrappers */
3445 {
3446 MonoMethod **wrappers;
3447 int nwrappers;
3448
3449 wrappers = mono_marshal_get_virtual_stelemref_wrappers (&nwrappers);
3450 for (i = 0; i < nwrappers; ++i)
3451 add_method (acfg, wrappers [i]);
3452 g_free (wrappers);
3453 }
3454
3455 /* castclass_with_check wrapper */
3456 add_method (acfg, mono_marshal_get_castclass_with_cache ());
3457 /* isinst_with_check wrapper */
3458 add_method (acfg, mono_marshal_get_isinst_with_cache ());
3459
3460 #if defined(MONO_ARCH_ENABLE_MONITOR_IL_FASTPATH)
3461 {
3462 MonoMethodDesc *desc;
3463 MonoMethod *m;
3464
3465 desc = mono_method_desc_new ("Monitor:Enter(object,bool&)", FALSE);
3466 m = mono_method_desc_search_in_class (desc, mono_defaults.monitor_class);
3467 mono_method_desc_free (desc);
3468 if (m) {
3469 m = mono_monitor_get_fast_path (m);
3470 if (m)
3471 add_method (acfg, m);
3472 }
3473 }
3474 #endif
3475
3476 /* JIT icall wrappers */
3477 /* FIXME: locking - this is "safe" as full-AOT threads don't mutate the icall hash*/
3478 g_hash_table_foreach (mono_get_jit_icall_info (), add_jit_icall_wrapper, acfg);
3479 }
3480
3481 /*
3482 * remoting-invoke-with-check wrappers are very frequent, so avoid emitting them,
3483 * we use the original method instead at runtime.
3484 * Since full-aot doesn't support remoting, this is not a problem.
3485 */
3486 #if 0
3487 /* remoting-invoke wrappers */
3488 for (i = 0; i < acfg->image->tables [MONO_TABLE_METHOD].rows; ++i) {
3489 MonoMethodSignature *sig;
3490
3491 token = MONO_TOKEN_METHOD_DEF | (i + 1);
3492 method = mono_get_method (acfg->image, token, NULL);
3493
3494 sig = mono_method_signature (method);
3495
3496 if (sig->hasthis && (method->klass->marshalbyref || method->klass == mono_defaults.object_class)) {
3497 m = mono_marshal_get_remoting_invoke_with_check (method);
3498
3499 add_method (acfg, m);
3500 }
3501 }
3502 #endif
3503
3504 /* delegate-invoke wrappers */
3505 for (i = 0; i < acfg->image->tables [MONO_TABLE_TYPEDEF].rows; ++i) {
3506 MonoClass *klass;
3507 MonoCustomAttrInfo *cattr;
3508
3509 token = MONO_TOKEN_TYPE_DEF | (i + 1);
3510 klass = mono_class_get (acfg->image, token);
3511
3512 if (!klass) {
3513 mono_loader_clear_error ();
3514 continue;
3515 }
3516
3517 if (!klass->delegate || klass == mono_defaults.delegate_class || klass == mono_defaults.multicastdelegate_class)
3518 continue;
3519
3520 if (!klass->generic_container) {
3521 method = mono_get_delegate_invoke (klass);
3522
3523 m = mono_marshal_get_delegate_invoke (method, NULL);
3524
3525 add_method (acfg, m);
3526
3527 method = mono_class_get_method_from_name_flags (klass, "BeginInvoke", -1, 0);
3528 if (method)
3529 add_method (acfg, mono_marshal_get_delegate_begin_invoke (method));
3530
3531 method = mono_class_get_method_from_name_flags (klass, "EndInvoke", -1, 0);
3532 if (method)
3533 add_method (acfg, mono_marshal_get_delegate_end_invoke (method));
3534
3535 cattr = mono_custom_attrs_from_class (klass);
3536
3537 if (cattr) {
3538 int j;
3539
3540 for (j = 0; j < cattr->num_attrs; ++j)
3541 if (cattr->attrs [j].ctor && (!strcmp (cattr->attrs [j].ctor->klass->name, "MonoNativeFunctionWrapperAttribute") || !strcmp (cattr->attrs [j].ctor->klass->name, "UnmanagedFunctionPointerAttribute")))
3542 break;
3543 if (j < cattr->num_attrs)
3544 add_method (acfg, mono_marshal_get_native_func_wrapper_aot (klass));
3545 }
3546 } else if ((acfg->opts & MONO_OPT_GSHAREDVT) && klass->generic_container) {
3547 MonoGenericContext ctx;
3548 MonoMethod *inst, *gshared;
3549
3550 /*
3551 * Emit gsharedvt versions of the generic delegate-invoke wrappers
3552 */
3553 /* Invoke */
3554 method = mono_get_delegate_invoke (klass);
3555 create_gsharedvt_inst (acfg, method, &ctx);
3556
3557 inst = mono_class_inflate_generic_method (method, &ctx);
3558
3559 m = mono_marshal_get_delegate_invoke (inst, NULL);
3560 g_assert (m->is_inflated);
3561
3562 gshared = mini_get_shared_method_full (m, FALSE, TRUE);
3563 add_extra_method (acfg, gshared);
3564
3565 /* begin-invoke */
3566 method = mono_get_delegate_begin_invoke (klass);
3567 create_gsharedvt_inst (acfg, method, &ctx);
3568
3569 inst = mono_class_inflate_generic_method (method, &ctx);
3570
3571 m = mono_marshal_get_delegate_begin_invoke (inst);
3572 g_assert (m->is_inflated);
3573
3574 gshared = mini_get_shared_method_full (m, FALSE, TRUE);
3575 add_extra_method (acfg, gshared);
3576
3577 /* end-invoke */
3578 method = mono_get_delegate_end_invoke (klass);
3579 create_gsharedvt_inst (acfg, method, &ctx);
3580
3581 inst = mono_class_inflate_generic_method (method, &ctx);
3582
3583 m = mono_marshal_get_delegate_end_invoke (inst);
3584 g_assert (m->is_inflated);
3585
3586 gshared = mini_get_shared_method_full (m, FALSE, TRUE);
3587 add_extra_method (acfg, gshared);
3588
3589 }
3590 }
3591
3592 /* array access wrappers */
3593 for (i = 0; i < acfg->image->tables [MONO_TABLE_TYPESPEC].rows; ++i) {
3594 MonoClass *klass;
3595
3596 token = MONO_TOKEN_TYPE_SPEC | (i + 1);
3597 klass = mono_class_get (acfg->image, token);
3598
3599 if (!klass) {
3600 mono_loader_clear_error ();
3601 continue;
3602 }
3603
3604 if (klass->rank && MONO_TYPE_IS_PRIMITIVE (&klass->element_class->byval_arg)) {
3605 MonoMethod *m, *wrapper;
3606
3607 /* Add runtime-invoke wrappers too */
3608
3609 m = mono_class_get_method_from_name (klass, "Get", -1);
3610 g_assert (m);
3611 wrapper = mono_marshal_get_array_accessor_wrapper (m);
3612 add_extra_method (acfg, wrapper);
3613 add_extra_method (acfg, mono_marshal_get_runtime_invoke (wrapper, FALSE));
3614
3615 m = mono_class_get_method_from_name (klass, "Set", -1);
3616 g_assert (m);
3617 wrapper = mono_marshal_get_array_accessor_wrapper (m);
3618 add_extra_method (acfg, wrapper);
3619 add_extra_method (acfg, mono_marshal_get_runtime_invoke (wrapper, FALSE));
3620 }
3621 }
3622
3623 /* Synchronized wrappers */
3624 for (i = 0; i < acfg->image->tables [MONO_TABLE_METHOD].rows; ++i) {
3625 token = MONO_TOKEN_METHOD_DEF | (i + 1);
3626 method = mono_get_method (acfg->image, token, NULL);
3627
3628 if (method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) {
3629 if (method->is_generic) {
3630 // FIXME:
3631 } else if (method->klass->generic_container) {
3632 MonoGenericContext ctx;
3633 MonoMethod *inst, *gshared, *m;
3634
3635 /*
3636 * Create a generic wrapper for a generic instance, and AOT that.
3637 */
3638 create_gsharedvt_inst (acfg, method, &ctx);
3639 inst = mono_class_inflate_generic_method (method, &ctx);
3640 m = mono_marshal_get_synchronized_wrapper (inst);
3641 g_assert (m->is_inflated);
3642 gshared = mini_get_shared_method_full (m, FALSE, TRUE);
3643 add_method (acfg, gshared);
3644 } else {
3645 add_method (acfg, mono_marshal_get_synchronized_wrapper (method));
3646 }
3647 }
3648 }
3649
3650 /* pinvoke wrappers */
3651 for (i = 0; i < acfg->image->tables [MONO_TABLE_METHOD].rows; ++i) {
3652 MonoMethod *method;
3653 guint32 token = MONO_TOKEN_METHOD_DEF | (i + 1);
3654
3655 method = mono_get_method (acfg->image, token, NULL);
3656
3657 if ((method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
3658 (method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL)) {
3659 add_method (acfg, mono_marshal_get_native_wrapper (method, TRUE, TRUE));
3660 }
3661 }
3662
3663 /* native-to-managed wrappers */
3664 for (i = 0; i < acfg->image->tables [MONO_TABLE_METHOD].rows; ++i) {
3665 MonoMethod *method;
3666 guint32 token = MONO_TOKEN_METHOD_DEF | (i + 1);
3667 MonoCustomAttrInfo *cattr;
3668 int j;
3669
3670 method = mono_get_method (acfg->image, token, NULL);
3671
3672 /*
3673 * Only generate native-to-managed wrappers for methods which have an
3674 * attribute named MonoPInvokeCallbackAttribute. We search for the attribute by
3675 * name to avoid defining a new assembly to contain it.
3676 */
3677 cattr = mono_custom_attrs_from_method (method);
3678
3679 if (cattr) {
3680 for (j = 0; j < cattr->num_attrs; ++j)
3681 if (cattr->attrs [j].ctor && !strcmp (cattr->attrs [j].ctor->klass->name, "MonoPInvokeCallbackAttribute"))
3682 break;
3683 if (j < cattr->num_attrs) {
3684 MonoCustomAttrEntry *e = &cattr->attrs [j];
3685 MonoMethodSignature *sig = mono_method_signature (e->ctor);
3686 const char *p = (const char*)e->data;
3687 const char *named;
3688 int slen, num_named, named_type, data_type;
3689 char *n;
3690 MonoType *t;
3691 MonoClass *klass;
3692 char *export_name = NULL;
3693 MonoMethod *wrapper;
3694
3695 /* this cannot be enforced by the C# compiler so we must give the user some warning before aborting */
3696 if (!(method->flags & METHOD_ATTRIBUTE_STATIC)) {
3697 g_warning ("AOT restriction: Method '%s' must be static since it is decorated with [MonoPInvokeCallback]. See http://ios.xamarin.com/Documentation/Limitations#Reverse_Callbacks",
3698 mono_method_full_name (method, TRUE));
3699 exit (1);
3700 }
3701
3702 g_assert (sig->param_count == 1);
3703 g_assert (sig->params [0]->type == MONO_TYPE_CLASS && !strcmp (mono_class_from_mono_type (sig->params [0])->name, "Type"));
3704
3705 /*
3706 * Decode the cattr manually since we can't create objects
3707 * during aot compilation.
3708 */
3709
3710 /* Skip prolog */
3711 p += 2;
3712
3713 /* From load_cattr_value () in reflection.c */
3714 slen = mono_metadata_decode_value (p, &p);
3715 n = g_memdup (p, slen + 1);
3716 n [slen] = 0;
3717 t = mono_reflection_type_from_name (n, acfg->image);
3718 g_assert (t);
3719 g_free (n);
3720
3721 klass = mono_class_from_mono_type (t);
3722 g_assert (klass->parent == mono_defaults.multicastdelegate_class);
3723
3724 p += slen;
3725
3726 num_named = read16 (p);
3727 p += 2;
3728
3729 g_assert (num_named < 2);
3730 if (num_named == 1) {
3731 int name_len;
3732 char *name;
3733 MonoType *prop_type;
3734
3735 /* parse ExportSymbol attribute */
3736 named = p;
3737 named_type = *named;
3738 named += 1;
3739 data_type = *named;
3740 named += 1;
3741
3742 name_len = mono_metadata_decode_blob_size (named, &named);
3743 name = g_malloc (name_len + 1);
3744 memcpy (name, named, name_len);
3745 name [name_len] = 0;
3746 named += name_len;
3747
3748 g_assert (named_type == 0x54);
3749 g_assert (!strcmp (name, "ExportSymbol"));
3750
3751 prop_type = &mono_defaults.string_class->byval_arg;
3752
3753 /* load_cattr_value (), string case */
3754 g_assert (*named != (char)0xff);
3755 slen = mono_metadata_decode_value (named, &named);
3756 export_name = g_malloc (slen + 1);
3757 memcpy (export_name, named, slen);
3758 export_name [slen] = 0;
3759 named += slen;
3760 }
3761
3762 wrapper = mono_marshal_get_managed_wrapper (method, klass, 0);
3763 add_method (acfg, wrapper);
3764 if (export_name)
3765 g_hash_table_insert (acfg->export_names, wrapper, export_name);
3766 }
3767 }
3768
3769 if ((method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
3770 (method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL)) {
3771 add_method (acfg, mono_marshal_get_native_wrapper (method, TRUE, TRUE));
3772 }
3773 }
3774
3775 /* StructureToPtr/PtrToStructure wrappers */
3776 for (i = 0; i < acfg->image->tables [MONO_TABLE_TYPEDEF].rows; ++i) {
3777 MonoClass *klass;
3778
3779 token = MONO_TOKEN_TYPE_DEF | (i + 1);
3780 klass = mono_class_get (acfg->image, token);
3781
3782 if (!klass) {
3783 mono_loader_clear_error ();
3784 continue;
3785 }
3786
3787 if (klass->valuetype && !klass->generic_container && can_marshal_struct (klass) &&
3788 !(klass->nested_in && strstr (klass->nested_in->name, "<PrivateImplementationDetails>") == klass->nested_in->name)) {
3789 add_method (acfg, mono_marshal_get_struct_to_ptr (klass));
3790 add_method (acfg, mono_marshal_get_ptr_to_struct (klass));
3791 }
3792 }
3793 }
3794
3795 static gboolean
3796 has_type_vars (MonoClass *klass)
3797 {
3798 if ((klass->byval_arg.type == MONO_TYPE_VAR) || (klass->byval_arg.type == MONO_TYPE_MVAR))
3799 return TRUE;
3800 if (klass->rank)
3801 return has_type_vars (klass->element_class);
3802 if (klass->generic_class) {
3803 MonoGenericContext *context = &klass->generic_class->context;
3804 if (context->class_inst) {
3805 int i;
3806
3807 for (i = 0; i < context->class_inst->type_argc; ++i)
3808 if (has_type_vars (mono_class_from_mono_type (context->class_inst->type_argv [i])))
3809 return TRUE;
3810 }
3811 }
3812 if (klass->generic_container)
3813 return TRUE;
3814 return FALSE;
3815 }
3816
3817 static gboolean
3818 is_vt_inst (MonoGenericInst *inst)
3819 {
3820 int i;
3821
3822 for (i = 0; i < inst->type_argc; ++i) {
3823 MonoType *t = inst->type_argv [i];
3824 if (t->type == MONO_TYPE_VALUETYPE)
3825 return TRUE;
3826 }
3827 return FALSE;
3828 }
3829
3830 static gboolean
3831 method_has_type_vars (MonoMethod *method)
3832 {
3833 if (has_type_vars (method->klass))
3834 return TRUE;
3835
3836 if (method->is_inflated) {
3837 MonoGenericContext *context = mono_method_get_context (method);
3838 if (context->method_inst) {
3839 int i;
3840
3841 for (i = 0; i < context->method_inst->type_argc; ++i)
3842 if (has_type_vars (mono_class_from_mono_type (context->method_inst->type_argv [i])))
3843 return TRUE;
3844 }
3845 }
3846 return FALSE;
3847 }
3848
3849 static void add_generic_class_with_depth (MonoAotCompile *acfg, MonoClass *klass, int depth, const char *ref);
3850
3851 static void
3852 add_generic_class (MonoAotCompile *acfg, MonoClass *klass, gboolean force, const char *ref)
3853 {
3854 /* This might lead to a huge code blowup so only do it if neccesary */
3855 if (!acfg->aot_opts.full_aot && !force)
3856 return;
3857
3858 add_generic_class_with_depth (acfg, klass, 0, ref);
3859 }
3860
3861 static gboolean
3862 check_type_depth (MonoType *t, int depth)
3863 {
3864 int i;
3865
3866 if (depth > 8)
3867 return TRUE;
3868
3869 switch (t->type) {
3870 case MONO_TYPE_GENERICINST: {
3871 MonoGenericClass *gklass = t->data.generic_class;
3872 MonoGenericInst *ginst = gklass->context.class_inst;
3873
3874 if (ginst) {
3875 for (i = 0; i < ginst->type_argc; ++i) {
3876 if (check_type_depth (ginst->type_argv [i], depth + 1))
3877 return TRUE;
3878 }
3879 }
3880 break;
3881 }
3882 default:
3883 break;
3884 }
3885
3886 return FALSE;
3887 }
3888
3889 static void
3890 add_types_from_method_header (MonoAotCompile *acfg, MonoMethod *method);
3891
3892 /*
3893 * add_generic_class:
3894 *
3895 * Add all methods of a generic class.
3896 */
3897 static void
3898 add_generic_class_with_depth (MonoAotCompile *acfg, MonoClass *klass, int depth, const char *ref)
3899 {
3900 MonoMethod *method;
3901 MonoClassField *field;
3902 gpointer iter;
3903 gboolean use_gsharedvt = FALSE;
3904
3905 if (!acfg->ginst_hash)
3906 acfg->ginst_hash = g_hash_table_new (NULL, NULL);
3907
3908 mono_class_init (klass);
3909
3910 if (klass->generic_class && klass->generic_class->context.class_inst->is_open)
3911 return;
3912
3913 if (has_type_vars (klass))
3914 return;
3915
3916 if (!klass->generic_class && !klass->rank)
3917 return;
3918
3919 if (klass->exception_type)
3920 return;
3921
3922 if (!acfg->ginst_hash)
3923 acfg->ginst_hash = g_hash_table_new (NULL, NULL);
3924
3925 if (g_hash_table_lookup (acfg->ginst_hash, klass))
3926 return;
3927
3928 if (check_type_depth (&klass->byval_arg, 0))
3929 return;
3930
3931 if (acfg->aot_opts.log_generics)
3932 printf ("%*sAdding generic instance %s [%s].\n", depth, "", mono_type_full_name (&klass->byval_arg), ref);
3933
3934 g_hash_table_insert (acfg->ginst_hash, klass, klass);
3935
3936 /*
3937 * Use gsharedvt for generic collections with vtype arguments to avoid code blowup.
3938 * Enable this only for some classes since gsharedvt might not support all methods.
3939 */
3940 if ((acfg->opts & MONO_OPT_GSHAREDVT) && klass->image == mono_defaults.corlib && klass->generic_class && klass->generic_class->context.class_inst && is_vt_inst (klass->generic_class->context.class_inst) &&
3941 (!strcmp (klass->name, "Dictionary`2") || !strcmp (klass->name, "List`1") || !strcmp (klass->name, "ReadOnlyCollection`1")))
3942 use_gsharedvt = TRUE;
3943
3944 iter = NULL;
3945 while ((method = mono_class_get_methods (klass, &iter))) {
3946 if ((acfg->opts & MONO_OPT_GSHAREDVT) && method->is_inflated && mono_method_get_context (method)->method_inst) {
3947 /*
3948 * This is partial sharing, and we can't handle it yet
3949 */
3950 continue;
3951 }
3952
3953 if (mono_method_is_generic_sharable_full (method, FALSE, FALSE, use_gsharedvt)) {
3954 /* Already added */
3955 add_types_from_method_header (acfg, method);
3956 continue;
3957 }
3958
3959 if (method->is_generic)
3960 /* FIXME: */
3961 continue;
3962
3963 /*
3964 * FIXME: Instances which are referenced by these methods are not added,
3965 * for example Array.Resize<int> for List<int>.Add ().
3966 */
3967 add_extra_method_with_depth (acfg, method, depth + 1);
3968 }
3969
3970 iter = NULL;
3971 while ((field = mono_class_get_fields (klass, &iter))) {
3972 if (field->type->type == MONO_TYPE_GENERICINST)
3973 add_generic_class_with_depth (acfg, mono_class_from_mono_type (field->type), depth + 1, "field");
3974 }
3975
3976 if (klass->delegate) {
3977 method = mono_get_delegate_invoke (klass);
3978
3979 method = mono_marshal_get_delegate_invoke (method, NULL);
3980
3981 if (acfg->aot_opts.log_generics)
3982 printf ("%*sAdding method %s.\n", depth, "", mono_method_full_name (method, TRUE));
3983
3984 add_method (acfg, method);
3985 }
3986
3987 /* Add superclasses */
3988 if (klass->parent)
3989 add_generic_class_with_depth (acfg, klass->parent, depth, "parent");
3990
3991 /*
3992 * For ICollection<T>, add instances of the helper methods
3993 * in Array, since a T[] could be cast to ICollection<T>.
3994 */
3995 if (klass->image == mono_defaults.corlib && !strcmp (klass->name_space, "System.Collections.Generic") &&
3996 (!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"))) {
3997 MonoClass *tclass = mono_class_from_mono_type (klass->generic_class->context.class_inst->type_argv [0]);
3998 MonoClass *array_class = mono_bounded_array_class_get (tclass, 1, FALSE);
3999 gpointer iter;
4000 char *name_prefix;
4001
4002 if (!strcmp (klass->name, "IEnumerator`1"))
4003 name_prefix = g_strdup_printf ("%s.%s", klass->name_space, "IEnumerable`1");
4004 else
4005 name_prefix = g_strdup_printf ("%s.%s", klass->name_space, klass->name);
4006
4007 /* Add the T[]/InternalEnumerator class */
4008 if (!strcmp (klass->name, "IEnumerable`1") || !strcmp (klass->name, "IEnumerator`1")) {
4009 MonoClass *nclass;
4010
4011 iter = NULL;
4012 while ((nclass = mono_class_get_nested_types (array_class->parent, &iter))) {
4013 if (!strcmp (nclass->name, "InternalEnumerator`1"))
4014 break;
4015 }
4016 g_assert (nclass);
4017 nclass = mono_class_inflate_generic_class (nclass, mono_generic_class_get_context (klass->generic_class));
4018 add_generic_class (acfg, nclass, FALSE, "ICollection<T>");
4019 }
4020
4021 iter = NULL;
4022 while ((method = mono_class_get_methods (array_class, &iter))) {
4023 if (strstr (method->name, name_prefix)) {
4024 MonoMethod *m = mono_aot_get_array_helper_from_wrapper (method);
4025
4026 add_extra_method_with_depth (acfg, m, depth);
4027 }
4028 }
4029
4030 g_free (name_prefix);
4031 }
4032
4033 /* Add an instance of GenericComparer<T> which is created dynamically by Comparer<T> */
4034 if (klass->image == mono_defaults.corlib && !strcmp (klass->name_space, "System.Collections.Generic") && !strcmp (klass->name, "Comparer`1")) {
4035 MonoClass *tclass = mono_class_from_mono_type (klass->generic_class->context.class_inst->type_argv [0]);
4036 MonoClass *icomparable, *gcomparer;
4037 MonoGenericContext ctx;
4038 MonoType *args [16];
4039
4040 memset (&ctx, 0, sizeof (ctx));
4041
4042 icomparable = mono_class_from_name (mono_defaults.corlib, "System", "IComparable`1");
4043 g_assert (icomparable);
4044 args [0] = &tclass->byval_arg;
4045 ctx.class_inst = mono_metadata_get_generic_inst (1, args);
4046
4047 if (mono_class_is_assignable_from (mono_class_inflate_generic_class (icomparable, &ctx), tclass)) {
4048 gcomparer = mono_class_from_name (mono_defaults.corlib, "System.Collections.Generic", "GenericComparer`1");
4049 g_assert (gcomparer);
4050 add_generic_class (acfg, mono_class_inflate_generic_class (gcomparer, &ctx), FALSE, "Comparer<T>");
4051 }
4052 }
4053
4054 /* Add an instance of GenericEqualityComparer<T> which is created dynamically by EqualityComparer<T> */
4055 if (klass->image == mono_defaults.corlib && !strcmp (klass->name_space, "System.Collections.Generic") && !strcmp (klass->name, "EqualityComparer`1")) {
4056 MonoClass *tclass = mono_class_from_mono_type (klass->generic_class->context.class_inst->type_argv [0]);
4057 MonoClass *iface, *gcomparer;
4058 MonoGenericContext ctx;
4059 MonoType *args [16];
4060
4061 memset (&ctx, 0, sizeof (ctx));
4062
4063 iface = mono_class_from_name (mono_defaults.corlib, "System", "IEquatable`1");
4064 g_assert (iface);
4065 args [0] = &tclass->byval_arg;
4066 ctx.class_inst = mono_metadata_get_generic_inst (1, args);
4067
4068 if (mono_class_is_assignable_from (mono_class_inflate_generic_class (iface, &ctx), tclass)) {
4069 gcomparer = mono_class_from_name (mono_defaults.corlib, "System.Collections.Generic", "GenericEqualityComparer`1");
4070 g_assert (gcomparer);
4071 add_generic_class (acfg, mono_class_inflate_generic_class (gcomparer, &ctx), FALSE, "EqualityComparer<T>");
4072 }
4073 }
4074 }
4075
4076 static void
4077 add_instances_of (MonoAotCompile *acfg, MonoClass *klass, MonoType **insts, int ninsts, gboolean force)
4078 {
4079 int i;
4080 MonoGenericContext ctx;
4081 MonoType *args [16];
4082
4083 if (acfg->aot_opts.no_instances)
4084 return;
4085
4086 memset (&ctx, 0, sizeof (ctx));
4087
4088 for (i = 0; i < ninsts; ++i) {
4089 args [0] = insts [i];
4090 ctx.class_inst = mono_metadata_get_generic_inst (1, args);
4091 add_generic_class (acfg, mono_class_inflate_generic_class (klass, &ctx), force, "");
4092 }
4093 }
4094
4095 static void
4096 add_types_from_method_header (MonoAotCompile *acfg, MonoMethod *method)
4097 {
4098 MonoMethodHeader *header;
4099 MonoMethodSignature *sig;
4100 int j, depth;
4101
4102 depth = GPOINTER_TO_UINT (g_hash_table_lookup (acfg->method_depth, method));
4103
4104 sig = mono_method_signature (method);
4105
4106 if (sig) {
4107 for (j = 0; j < sig->param_count; ++j)
4108 if (sig->params [j]->type == MONO_TYPE_GENERICINST)
4109 add_generic_class_with_depth (acfg, mono_class_from_mono_type (sig->params [j]), depth + 1, "arg");
4110 }
4111
4112 header = mono_method_get_header (method);
4113
4114 if (header) {
4115 for (j = 0; j < header->num_locals; ++j)
4116 if (header->locals [j]->type == MONO_TYPE_GENERICINST)
4117 add_generic_class_with_depth (acfg, mono_class_from_mono_type (header->locals [j]), depth + 1, "local");
4118 } else {
4119 mono_loader_clear_error ();
4120 }
4121 }
4122
4123 /*
4124 * add_generic_instances:
4125 *
4126 * Add instances referenced by the METHODSPEC/TYPESPEC table.
4127 */
4128 static void
4129 add_generic_instances (MonoAotCompile *acfg)
4130 {
4131 int i;
4132 guint32 token;
4133 MonoMethod *method;
4134 MonoGenericContext *context;
4135
4136 if (acfg->aot_opts.no_instances)
4137 return;
4138
4139 for (i = 0; i < acfg->image->tables [MONO_TABLE_METHODSPEC].rows; ++i) {
4140 token = MONO_TOKEN_METHOD_SPEC | (i + 1);
4141 method = mono_get_method (acfg->image, token, NULL);
4142
4143 if (!method)
4144 continue;
4145
4146 if (method->klass->image != acfg->image)
4147 continue;
4148
4149 context = mono_method_get_context (method);
4150
4151 if (context && ((context->class_inst && context->class_inst->is_open)))
4152 continue;
4153
4154 /*
4155 * For open methods, create an instantiation which can be passed to the JIT.
4156 * FIXME: Handle class_inst as well.
4157 */
4158 if (context && context->method_inst && context->method_inst->is_open) {
4159 MonoGenericContext shared_context;
4160 MonoGenericInst *inst;
4161 MonoType **type_argv;
4162 int i;
4163 MonoMethod *declaring_method;
4164 gboolean supported = TRUE;
4165
4166 /* Check that the context doesn't contain open constructed types */
4167 if (context->class_inst) {
4168 inst = context->class_inst;
4169 for (i = 0; i < inst->type_argc; ++i) {
4170 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)
4171 continue;
4172 if (mono_class_is_open_constructed_type (inst->type_argv [i]))
4173 supported = FALSE;
4174 }
4175 }
4176 if (context->method_inst) {
4177 inst = context->method_inst;
4178 for (i = 0; i < inst->type_argc; ++i) {
4179 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)
4180 continue;
4181 if (mono_class_is_open_constructed_type (inst->type_argv [i]))
4182 supported = FALSE;
4183 }
4184 }
4185
4186 if (!supported)
4187 continue;
4188
4189 memset (&shared_context, 0, sizeof (MonoGenericContext));
4190
4191 inst = context->class_inst;
4192 if (inst) {
4193 type_argv = g_new0 (MonoType*, inst->type_argc);
4194 for (i = 0; i < inst->type_argc; ++i) {
4195 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)
4196 type_argv [i] = &mono_defaults.object_class->byval_arg;
4197 else
4198 type_argv [i] = inst->type_argv [i];
4199 }
4200
4201 shared_context.class_inst = mono_metadata_get_generic_inst (inst->type_argc, type_argv);
4202 g_free (type_argv);
4203 }
4204
4205 inst = context->method_inst;
4206 if (inst) {
4207 type_argv = g_new0 (MonoType*, inst->type_argc);
4208 for (i = 0; i < inst->type_argc; ++i) {
4209 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)
4210 type_argv [i] = &mono_defaults.object_class->byval_arg;
4211 else
4212 type_argv [i] = inst->type_argv [i];
4213 }
4214
4215 shared_context.method_inst = mono_metadata_get_generic_inst (inst->type_argc, type_argv);
4216 g_free (type_argv);
4217 }
4218
4219 if (method->is_generic || method->klass->generic_container)
4220 declaring_method = method;
4221 else
4222 declaring_method = mono_method_get_declaring_generic_method (method);
4223
4224 method = mono_class_inflate_generic_method (declaring_method, &shared_context);
4225 }
4226
4227 /*
4228 * If the method is fully sharable, it was already added in place of its
4229 * generic definition.
4230 */
4231 if (mono_method_is_generic_sharable_full (method, FALSE, FALSE, FALSE))
4232 continue;
4233
4234 /*
4235 * FIXME: Partially shared methods are not shared here, so we end up with
4236 * many identical methods.
4237 */
4238 add_extra_method (acfg, method);
4239 }
4240
4241 for (i = 0; i < acfg->image->tables [MONO_TABLE_TYPESPEC].rows; ++i) {
4242 MonoClass *klass;
4243
4244 token = MONO_TOKEN_TYPE_SPEC | (i + 1);
4245
4246 klass = mono_class_get (acfg->image, token);
4247 if (!klass || klass->rank) {
4248 mono_loader_clear_error ();
4249 continue;
4250 }
4251
4252 add_generic_class (acfg, klass, FALSE, "typespec");
4253 }
4254
4255 /* Add types of args/locals */
4256 for (i = 0; i < acfg->methods->len; ++i) {
4257 method = g_ptr_array_index (acfg->methods, i);
4258 add_types_from_method_header (acfg, method);
4259 }
4260
4261 if (acfg->image == mono_defaults.corlib) {
4262 MonoClass *klass;
4263 MonoType *insts [256];
4264 int ninsts = 0;
4265
4266 insts [ninsts ++] = &mono_defaults.byte_class->byval_arg;
4267 insts [ninsts ++] = &mono_defaults.sbyte_class->byval_arg;
4268 insts [ninsts ++] = &mono_defaults.int16_class->byval_arg;
4269 insts [ninsts ++] = &mono_defaults.uint16_class->byval_arg;
4270 insts [ninsts ++] = &mono_defaults.int32_class->byval_arg;
4271 insts [ninsts ++] = &mono_defaults.uint32_class->byval_arg;
4272 insts [ninsts ++] = &mono_defaults.int64_class->byval_arg;
4273 insts [ninsts ++] = &mono_defaults.uint64_class->byval_arg;
4274 insts [ninsts ++] = &mono_defaults.single_class->byval_arg;
4275 insts [ninsts ++] = &mono_defaults.double_class->byval_arg;
4276 insts [ninsts ++] = &mono_defaults.char_class->byval_arg;
4277 insts [ninsts ++] = &mono_defaults.boolean_class->byval_arg;
4278
4279 /* Add GenericComparer<T> instances for primitive types for Enum.ToString () */
4280 klass = mono_class_from_name (acfg->image, "System.Collections.Generic", "GenericComparer`1");
4281 if (klass)
4282 add_instances_of (acfg, klass, insts, ninsts, TRUE);
4283 klass = mono_class_from_name (acfg->image, "System.Collections.Generic", "GenericEqualityComparer`1");
4284 if (klass)
4285 add_instances_of (acfg, klass, insts, ninsts, TRUE);
4286
4287 /* Add instances of the array generic interfaces for primitive types */
4288 /* This will add instances of the InternalArray_ helper methods in Array too */
4289 klass = mono_class_from_name (acfg->image, "System.Collections.Generic", "ICollection`1");
4290 if (klass)
4291 add_instances_of (acfg, klass, insts, ninsts, TRUE);
4292 klass = mono_class_from_name (acfg->image, "System.Collections.Generic", "IList`1");
4293 if (klass)
4294 add_instances_of (acfg, klass, insts, ninsts, TRUE);
4295 klass = mono_class_from_name (acfg->image, "System.Collections.Generic", "IEnumerable`1");
4296 if (klass)
4297 add_instances_of (acfg, klass, insts, ninsts, TRUE);
4298
4299 /*
4300 * Add a managed-to-native wrapper of Array.GetGenericValueImpl<object>, which is
4301 * used for all instances of GetGenericValueImpl by the AOT runtime.
4302 */
4303 {
4304 MonoGenericContext ctx;
4305 MonoType *args [16];
4306 MonoMethod *get_method;
4307 MonoClass *array_klass = mono_array_class_get (mono_defaults.object_class, 1)->parent;
4308
4309 get_method = mono_class_get_method_from_name (array_klass, "GetGenericValueImpl", 2);
4310
4311 if (get_method) {
4312 memset (&ctx, 0, sizeof (ctx));
4313 args [0] = &mono_defaults.object_class->byval_arg;
4314 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
4315 add_extra_method (acfg, mono_marshal_get_native_wrapper (mono_class_inflate_generic_method (get_method, &ctx), TRUE, TRUE));
4316 }
4317 }
4318
4319 /* Same for CompareExchange<T>/Exchange<T> */
4320 {
4321 MonoGenericContext ctx;
4322 MonoType *args [16];
4323 MonoMethod *m;
4324 MonoClass *interlocked_klass = mono_class_from_name (mono_defaults.corlib, "System.Threading", "Interlocked");
4325 gpointer iter = NULL;
4326
4327 while ((m = mono_class_get_methods (interlocked_klass, &iter))) {
4328 if ((!strcmp (m->name, "CompareExchange") || !strcmp (m->name, "Exchange")) && m->is_generic) {
4329 memset (&ctx, 0, sizeof (ctx));
4330 args [0] = &mono_defaults.object_class->byval_arg;
4331 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
4332 add_extra_method (acfg, mono_marshal_get_native_wrapper (mono_class_inflate_generic_method (m, &ctx), TRUE, TRUE));
4333 }
4334 }
4335 }
4336
4337 /* Same for Volatile.Read/Write<T> */
4338 {
4339 MonoGenericContext ctx;
4340 MonoType *args [16];
4341 MonoMethod *m;
4342 MonoClass *volatile_klass = mono_class_from_name (mono_defaults.corlib, "System.Threading", "Volatile");
4343 gpointer iter = NULL;
4344
4345 if (volatile_klass) {
4346 while ((m = mono_class_get_methods (volatile_klass, &iter))) {
4347 if ((!strcmp (m->name, "Read") || !strcmp (m->name, "Write")) && m->is_generic) {
4348 memset (&ctx, 0, sizeof (ctx));
4349 args [0] = &mono_defaults.object_class->byval_arg;
4350 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
4351 add_extra_method (acfg, mono_marshal_get_native_wrapper (mono_class_inflate_generic_method (m, &ctx), TRUE, TRUE));
4352 }
4353 }
4354 }
4355 }
4356 }
4357 }
4358
4359 /*
4360 * is_direct_callable:
4361 *
4362 * Return whenever the method identified by JI is directly callable without
4363 * going through the PLT.
4364 */
4365 static gboolean
4366 is_direct_callable (MonoAotCompile *acfg, MonoMethod *method, MonoJumpInfo *patch_info)
4367 {
4368 if ((patch_info->type == MONO_PATCH_INFO_METHOD) && (patch_info->data.method->klass->image == acfg->image)) {
4369 MonoCompile *callee_cfg = g_hash_table_lookup (acfg->method_to_cfg, patch_info->data.method);
4370 if (callee_cfg) {
4371 gboolean direct_callable = TRUE;
4372
4373 if (direct_callable && !(!callee_cfg->has_got_slots && (callee_cfg->method->klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT)))
4374 direct_callable = FALSE;
4375 if ((callee_cfg->method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) && (!method || method->wrapper_type != MONO_WRAPPER_SYNCHRONIZED))
4376 // FIXME: Maybe call the wrapper directly ?
4377 direct_callable = FALSE;
4378
4379 if (acfg->aot_opts.soft_debug || acfg->aot_opts.no_direct_calls) {
4380 /* Disable this so all calls go through load_method (), see the
4381 * mini_get_debug_options ()->load_aot_jit_info_eagerly = TRUE; line in
4382 * mono_debugger_agent_init ().
4383 */
4384 direct_callable = FALSE;
4385 }
4386
4387 if (callee_cfg->method->wrapper_type == MONO_WRAPPER_ALLOC)
4388 /* sgen does some initialization when the allocator method is created */
4389 direct_callable = FALSE;
4390
4391 if (direct_callable)
4392 return TRUE;
4393 }
4394 } else if ((patch_info->type == MONO_PATCH_INFO_ICALL_ADDR && patch_info->data.method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) {
4395 if (acfg->aot_opts.direct_pinvoke)
4396 return TRUE;
4397 } else if (patch_info->type == MONO_PATCH_INFO_ICALL_ADDR) {
4398 if (acfg->aot_opts.direct_icalls)
4399 return TRUE;
4400 return FALSE;
4401 }
4402
4403 return FALSE;
4404 }
4405
4406 #ifdef MONO_ARCH_AOT_SUPPORTED
4407 static const char *
4408 get_pinvoke_import (MonoAotCompile *acfg, MonoMethod *method)
4409 {
4410 MonoImage *image = method->klass->image;
4411 MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *) method;
4412 MonoTableInfo *tables = image->tables;
4413 MonoTableInfo *im = &tables [MONO_TABLE_IMPLMAP];
4414 MonoTableInfo *mr = &tables [MONO_TABLE_MODULEREF];
4415 guint32 im_cols [MONO_IMPLMAP_SIZE];
4416 char *import;
4417
4418 import = g_hash_table_lookup (acfg->method_to_pinvoke_import, method);
4419 if (import != NULL)
4420 return import;
4421
4422 if (!piinfo->implmap_idx || piinfo->implmap_idx > im->rows)
4423 return NULL;
4424
4425 mono_metadata_decode_row (im, piinfo->implmap_idx - 1, im_cols, MONO_IMPLMAP_SIZE);
4426
4427 if (!im_cols [MONO_IMPLMAP_SCOPE] || im_cols [MONO_IMPLMAP_SCOPE] > mr->rows)
4428 return NULL;
4429
4430 import = g_strdup_printf ("%s", mono_metadata_string_heap (image, im_cols [MONO_IMPLMAP_NAME]));
4431
4432 g_hash_table_insert (acfg->method_to_pinvoke_import, method, import);
4433
4434 return import;
4435 }
4436 #endif
4437
4438 static gint
4439 compare_lne (MonoDebugLineNumberEntry *a, MonoDebugLineNumberEntry *b)
4440 {
4441 if (a->native_offset == b->native_offset)
4442 return a->il_offset - b->il_offset;
4443 else
4444 return a->native_offset - b->native_offset;
4445 }
4446
4447 /*
4448 * compute_line_numbers:
4449 *
4450 * Returns a sparse array of size CODE_SIZE containing MonoDebugSourceLocation* entries for the native offsets which have a corresponding line number
4451 * entry.
4452 */
4453 static MonoDebugSourceLocation**
4454 compute_line_numbers (MonoMethod *method, int code_size, MonoDebugMethodJitInfo *debug_info)
4455 {
4456 MonoDebugMethodInfo *minfo;
4457 MonoDebugLineNumberEntry *ln_array;
4458 MonoDebugSourceLocation *loc;
4459 int i, prev_line, prev_il_offset;
4460 int *native_to_il_offset = NULL;
4461 MonoDebugSourceLocation **res;
4462 gboolean first;
4463
4464 minfo = mono_debug_lookup_method (method);
4465 if (!minfo)
4466 return NULL;
4467 // FIXME: This seems to happen when two methods have the same cfg->method_to_register
4468 if (debug_info->code_size != code_size)
4469 return NULL;
4470
4471 g_assert (code_size);
4472
4473 /* Compute the native->IL offset mapping */
4474
4475 ln_array = g_new0 (MonoDebugLineNumberEntry, debug_info->num_line_numbers);
4476 memcpy (ln_array, debug_info->line_numbers, debug_info->num_line_numbers * sizeof (MonoDebugLineNumberEntry));
4477
4478 qsort (ln_array, debug_info->num_line_numbers, sizeof (MonoDebugLineNumberEntry), (gpointer)compare_lne);
4479
4480 native_to_il_offset = g_new0 (int, code_size + 1);
4481
4482 for (i = 0; i < debug_info->num_line_numbers; ++i) {
4483 int j;
4484 MonoDebugLineNumberEntry *lne = &ln_array [i];
4485
4486 if (i == 0) {
4487 for (j = 0; j < lne->native_offset; ++j)
4488 native_to_il_offset [j] = -1;
4489 }
4490
4491 if (i < debug_info->num_line_numbers - 1) {
4492 MonoDebugLineNumberEntry *lne_next = &ln_array [i + 1];
4493
4494 for (j = lne->native_offset; j < lne_next->native_offset; ++j)
4495 native_to_il_offset [j] = lne->il_offset;
4496 } else {
4497 for (j = lne->native_offset; j < code_size; ++j)
4498 native_to_il_offset [j] = lne->il_offset;
4499 }
4500 }
4501 g_free (ln_array);
4502
4503 /* Compute the native->line number mapping */
4504 res = g_new0 (MonoDebugSourceLocation*, code_size);
4505 prev_il_offset = -1;
4506 prev_line = -1;
4507 first = TRUE;
4508 for (i = 0; i < code_size; ++i) {
4509 int il_offset = native_to_il_offset [i];
4510
4511 if (il_offset == -1 || il_offset == prev_il_offset)
4512 continue;
4513 prev_il_offset = il_offset;
4514 loc = mono_debug_symfile_lookup_location (minfo, il_offset);
4515 if (!(loc && loc->source_file))
4516 continue;
4517 if (loc->row == prev_line) {
4518 mono_debug_symfile_free_location (loc);
4519 continue;
4520 }
4521 prev_line = loc->row;
4522 //printf ("D: %s:%d il=%x native=%x\n", loc->source_file, loc->row, il_offset, i);
4523 if (first)
4524 /* This will cover the prolog too */
4525 res [0] = loc;
4526 else
4527 res [i] = loc;
4528 first = FALSE;
4529 }
4530 return res;
4531 }
4532
4533 static int
4534 get_file_index (MonoAotCompile *acfg, const char *source_file)
4535 {
4536 int findex;
4537
4538 // FIXME: Free these
4539 if (!acfg->dwarf_ln_filenames)
4540 acfg->dwarf_ln_filenames = g_hash_table_new (g_str_hash, g_str_equal);
4541 findex = GPOINTER_TO_INT (g_hash_table_lookup (acfg->dwarf_ln_filenames, source_file));
4542 if (!findex) {
4543 findex = g_hash_table_size (acfg->dwarf_ln_filenames) + 1;
4544 g_hash_table_insert (acfg->dwarf_ln_filenames, g_strdup (source_file), GINT_TO_POINTER (findex));
4545 emit_unset_mode (acfg);
4546 fprintf (acfg->fp, ".file %d \"%s\"\n", findex, mono_dwarf_escape_path (source_file));
4547 }
4548 return findex;
4549 }
4550
4551 #ifdef TARGET_ARM64
4552 #define INST_LEN 4
4553 #else
4554 #define INST_LEN 1
4555 #endif
4556
4557 /*
4558 * emit_and_reloc_code:
4559 *
4560 * Emit the native code in CODE, handling relocations along the way. If GOT_ONLY
4561 * is true, calls are made through the GOT too. This is used for emitting trampolines
4562 * in full-aot mode, since calls made from trampolines couldn't go through the PLT,
4563 * since trampolines are needed to make PTL work.
4564 */
4565 static void
4566 emit_and_reloc_code (MonoAotCompile *acfg, MonoMethod *method, guint8 *code, guint32 code_len, MonoJumpInfo *relocs, gboolean got_only, MonoDebugMethodJitInfo *debug_info)
4567 {
4568 int i, pindex, start_index, method_index;
4569 GPtrArray *patches;
4570 MonoJumpInfo *patch_info;
4571 MonoMethodHeader *header;
4572 MonoDebugSourceLocation **locs = NULL;
4573 gboolean skip;
4574 #ifdef MONO_ARCH_AOT_SUPPORTED
4575 gboolean direct_call, external_call;
4576 guint32 got_slot;
4577 const char *direct_call_target = 0;
4578 const char *direct_pinvoke;
4579 #endif
4580
4581 if (method) {
4582 header = mono_method_get_header (method);
4583
4584 method_index = get_method_index (acfg, method);
4585 }
4586
4587 if (acfg->gas_line_numbers && method && debug_info) {
4588 locs = compute_line_numbers (method, code_len, debug_info);
4589 if (!locs) {
4590 int findex = get_file_index (acfg, "<unknown>");
4591 emit_unset_mode (acfg);
4592 fprintf (acfg->fp, ".loc %d %d 0\n", findex, 1);
4593 }
4594 }
4595
4596 /* Collect and sort relocations */
4597 patches = g_ptr_array_new ();
4598 for (patch_info = relocs; patch_info; patch_info = patch_info->next)
4599 g_ptr_array_add (patches, patch_info);
4600 g_ptr_array_sort (patches, compare_patches);
4601
4602 start_index = 0;
4603 for (i = 0; i < code_len; i += INST_LEN) {
4604 patch_info = NULL;
4605 for (pindex = start_index; pindex < patches->len; ++pindex) {
4606 patch_info = g_ptr_array_index (patches, pindex);
4607 if (patch_info->ip.i >= i)
4608 break;
4609 }
4610
4611 if (locs && locs [i]) {
4612 MonoDebugSourceLocation *loc = locs [i];
4613 int findex;
4614
4615 findex = get_file_index (acfg, loc->source_file);
4616 emit_unset_mode (acfg);
4617 fprintf (acfg->fp, ".loc %d %d 0\n", findex, loc->row);
4618 mono_debug_symfile_free_location (loc);
4619 }
4620
4621 skip = FALSE;
4622 #ifdef MONO_ARCH_AOT_SUPPORTED
4623 if (patch_info && (patch_info->ip.i == i) && (pindex < patches->len)) {
4624 start_index = pindex;
4625
4626 switch (patch_info->type) {
4627 case MONO_PATCH_INFO_NONE:
4628 break;
4629 case MONO_PATCH_INFO_GOT_OFFSET: {
4630 int code_size;
4631
4632 arch_emit_got_offset (acfg, code + i, &code_size);
4633 i += code_size - INST_LEN;
4634 skip = TRUE;
4635 patch_info->type = MONO_PATCH_INFO_NONE;
4636 break;
4637 }
4638 case MONO_PATCH_INFO_OBJC_SELECTOR_REF: {
4639 int code_size, index;
4640 char *selector = (void*)patch_info->data.target;
4641
4642 if (!acfg->objc_selector_to_index)
4643 acfg->objc_selector_to_index = g_hash_table_new (g_str_hash, g_str_equal);
4644 if (!acfg->objc_selectors)
4645 acfg->objc_selectors = g_ptr_array_new ();
4646 index = GPOINTER_TO_UINT (g_hash_table_lookup (acfg->objc_selector_to_index, selector));
4647 if (index)
4648 index --;
4649 else {
4650 index = acfg->objc_selector_index;
4651 g_ptr_array_add (acfg->objc_selectors, (void*)patch_info->data.target);
4652 g_hash_table_insert (acfg->objc_selector_to_index, selector, GUINT_TO_POINTER (index + 1));
4653 acfg->objc_selector_index ++;
4654 }
4655
4656 arch_emit_objc_selector_ref (acfg, code + i, index, &code_size);
4657 i += code_size - INST_LEN;
4658 skip = TRUE;
4659 patch_info->type = MONO_PATCH_INFO_NONE;
4660 break;
4661 }
4662 default: {
4663 /*
4664 * If this patch is a call, try emitting a direct call instead of
4665 * through a PLT entry. This is possible if the called method is in
4666 * the same assembly and requires no initialization.
4667 */
4668 direct_call = FALSE;
4669 external_call = FALSE;
4670 if ((patch_info->type == MONO_PATCH_INFO_METHOD) && (patch_info->data.method->klass->image == acfg->image)) {
4671 if (!got_only && is_direct_callable (acfg, method, patch_info)) {
4672 MonoCompile *callee_cfg = g_hash_table_lookup (acfg->method_to_cfg, patch_info->data.method);
4673 //printf ("DIRECT: %s %s\n", method ? mono_method_full_name (method, TRUE) : "", mono_method_full_name (callee_cfg->method, TRUE));
4674 direct_call = TRUE;
4675 direct_call_target = callee_cfg->asm_symbol;
4676 patch_info->type = MONO_PATCH_INFO_NONE;
4677 acfg->stats.direct_calls ++;
4678 }
4679
4680 acfg->stats.all_calls ++;
4681 } else if (patch_info->type == MONO_PATCH_INFO_ICALL_ADDR) {
4682 if (!got_only && is_direct_callable (acfg, method, patch_info)) {
4683 if (!(patch_info->data.method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL))
4684 direct_pinvoke = mono_lookup_icall_symbol (patch_info->data.method);
4685 else
4686 direct_pinvoke = get_pinvoke_import (acfg, patch_info->data.method);
4687 if (direct_pinvoke) {
4688 direct_call = TRUE;
4689 g_assert (strlen (direct_pinvoke) < 1000);
4690 direct_call_target = g_strdup_printf ("%s%s", acfg->user_symbol_prefix, direct_pinvoke);
4691 }
4692 }
4693 } else if (patch_info->type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
4694 const char *sym = mono_lookup_jit_icall_symbol (patch_info->data.name);
4695 if (!got_only && sym && acfg->aot_opts.direct_icalls) {
4696 /* Call to a C function implementing a jit icall */
4697 direct_call = TRUE;
4698 external_call = TRUE;
4699 g_assert (strlen (sym) < 1000);
4700 direct_call_target = g_strdup_printf ("%s%s", acfg->user_symbol_prefix, sym);
4701 }
4702 } else if (patch_info->type == MONO_PATCH_INFO_INTERNAL_METHOD) {
4703 MonoJitICallInfo *info = mono_find_jit_icall_by_name (patch_info->data.name);
4704 const char *sym = mono_lookup_jit_icall_symbol (patch_info->data.name);
4705 if (!got_only && sym && acfg->aot_opts.direct_icalls && info->func == info->wrapper) {
4706 /* Call to a jit icall without a wrapper */
4707 direct_call = TRUE;
4708 external_call = TRUE;
4709 g_assert (strlen (sym) < 1000);
4710 direct_call_target = g_strdup_printf ("%s%s", acfg->user_symbol_prefix, sym);
4711 }
4712 }
4713
4714 if (direct_call) {
4715 patch_info->type = MONO_PATCH_INFO_NONE;
4716 acfg->stats.direct_calls ++;
4717 }
4718
4719 if (!got_only && !direct_call) {
4720 MonoPltEntry *plt_entry = get_plt_entry (acfg, patch_info);
4721 if (plt_entry) {
4722 /* This patch has a PLT entry, so we must emit a call to the PLT entry */
4723 direct_call = TRUE;
4724 direct_call_target = plt_entry->symbol;
4725
4726 /* Nullify the patch */
4727 patch_info->type = MONO_PATCH_INFO_NONE;
4728 plt_entry->jit_used = TRUE;
4729 }
4730 }
4731
4732 if (direct_call) {
4733 int call_size;
4734
4735 arch_emit_direct_call (acfg, direct_call_target, external_call, FALSE, patch_info, &call_size);
4736 i += call_size - INST_LEN;
4737 } else {
4738 int code_size;
4739
4740 got_slot = get_got_offset (acfg, patch_info);
4741
4742 arch_emit_got_access (acfg, code + i, got_slot, &code_size);
4743 i += code_size - INST_LEN;
4744 }
4745 skip = TRUE;
4746 }
4747 }
4748 }
4749 #endif /* MONO_ARCH_AOT_SUPPORTED */
4750
4751 if (!skip) {
4752 /* Find next patch */
4753 patch_info = NULL;
4754 for (pindex = start_index; pindex < patches->len; ++pindex) {
4755 patch_info = g_ptr_array_index (patches, pindex);
4756 if (patch_info->ip.i >= i)
4757 break;
4758 }
4759
4760 /* Try to emit multiple bytes at once */
4761 if (pindex < patches->len && patch_info->ip.i > i) {
4762 int limit;
4763
4764 for (limit = i + INST_LEN; limit < patch_info->ip.i; limit += INST_LEN) {
4765 if (locs && locs [limit])
4766 break;
4767 }
4768
4769 emit_code_bytes (acfg, code + i, limit - i);
4770 i = limit - INST_LEN;
4771 } else {
4772 emit_code_bytes (acfg, code + i, INST_LEN);
4773 }
4774 }
4775 }
4776
4777 g_free (locs);
4778 }
4779
4780 /*
4781 * sanitize_symbol:
4782 *
4783 * Return a modified version of S which only includes characters permissible in symbols.
4784 */
4785 static char*
4786 sanitize_symbol (MonoAotCompile *acfg, char *s)
4787 {
4788 gboolean process = FALSE;
4789 int i, len;
4790 GString *gs;
4791 char *res;
4792
4793 if (!s)
4794 return s;
4795
4796 len = strlen (s);
4797 for (i = 0; i < len; ++i)
4798 if (!(s [i] <= 0x7f && (isalnum (s [i]) || s [i] == '_')))
4799 process = TRUE;
4800 if (!process)
4801 return s;
4802
4803 gs = g_string_sized_new (len);
4804 for (i = 0; i < len; ++i) {
4805 guint8 c = s [i];
4806 if (c <= 0x7f && (isalnum (c) || c == '_')) {
4807 g_string_append_c (gs, c);
4808 } else if (c > 0x7f) {
4809 /* multi-byte utf8 */
4810 g_string_append_printf (gs, "_0x%x", c);
4811 i ++;
4812 c = s [i];
4813 while (c >> 6 == 0x2) {
4814 g_string_append_printf (gs, "%x", c);
4815 i ++;
4816 c = s [i];
4817 }
4818 g_string_append_printf (gs, "_");
4819 i --;
4820 } else {
4821 g_string_append_c (gs, '_');
4822 }
4823 }
4824
4825 res = mono_mempool_strdup (acfg->mempool, gs->str);
4826 g_string_free (gs, TRUE);
4827 return res;
4828 }
4829
4830 static char*
4831 get_debug_sym (MonoMethod *method, const char *prefix, GHashTable *cache)
4832 {
4833 char *name1, *name2, *cached;
4834 int i, j, len, count;
4835
4836 #ifdef TARGET_MACH
4837 // This is so that we don't accidentally create a local symbol (which starts with 'L')
4838 if (!prefix || !*prefix)
4839 prefix = "_";
4840 #endif
4841
4842 name1 = mono_method_full_name (method, TRUE);
4843 len = strlen (name1);
4844 name2 = malloc (strlen (prefix) + len + 16);
4845 memcpy (name2, prefix, strlen (prefix));
4846 j = strlen (prefix);
4847 for (i = 0; i < len; ++i) {
4848 if (isalnum (name1 [i])) {
4849 name2 [j ++] = name1 [i];
4850 } else if (name1 [i] == ' ' && name1 [i + 1] == '(' && name1 [i + 2] == ')') {
4851 i += 2;
4852 } else if (name1 [i] == ',' && name1 [i + 1] == ' ') {
4853 name2 [j ++] = '_';
4854 i++;
4855 } else if (name1 [i] == '(' || name1 [i] == ')' || name1 [i] == '>') {
4856 } else
4857 name2 [j ++] = '_';
4858 }
4859 name2 [j] = '\0';
4860
4861 g_free (name1);
4862
4863 count = 0;
4864 while (g_hash_table_lookup (cache, name2)) {
4865 sprintf (name2 + j, "_%d", count);
4866 count ++;
4867 }
4868
4869 cached = g_strdup (name2);
4870 g_hash_table_insert (cache, cached, cached);
4871
4872 return name2;
4873 }
4874
4875 static void
4876 emit_method_code (MonoAotCompile *acfg, MonoCompile *cfg)
4877 {
4878 MonoMethod *method;
4879 int method_index;
4880 guint8 *code;
4881 char *debug_sym = NULL;
4882 char *symbol = NULL;
4883 int func_alignment = AOT_FUNC_ALIGNMENT;
4884 MonoMethodHeader *header;
4885 char *export_name;
4886
4887 method = cfg->orig_method;
4888 code = cfg->native_code;
4889 header = cfg->header;
4890
4891 method_index = get_method_index (acfg, method);
4892 symbol = g_strdup_printf ("%sme_%x", acfg->temp_prefix, method_index);
4893
4894
4895 /* Make the labels local */
4896 emit_section_change (acfg, ".text", 0);
4897 emit_alignment (acfg, func_alignment);
4898
4899 if (acfg->global_symbols && acfg->need_no_dead_strip)
4900 fprintf (acfg->fp, " .no_dead_strip %s\n", cfg->asm_symbol);
4901
4902 emit_label (acfg, cfg->asm_symbol);
4903
4904 if (acfg->aot_opts.write_symbols && !acfg->global_symbols) {
4905 /*
4906 * Write a C style symbol for every method, this has two uses:
4907 * - it works on platforms where the dwarf debugging info is not
4908 * yet supported.
4909 * - it allows the setting of breakpoints of aot-ed methods.
4910 */
4911 debug_sym = get_debug_sym (method, "", acfg->method_label_hash);
4912
4913 if (acfg->need_no_dead_strip)
4914 fprintf (acfg->fp, " .no_dead_strip %s\n", debug_sym);
4915 emit_local_symbol (acfg, debug_sym, symbol, TRUE);
4916 emit_label (acfg, debug_sym);
4917 }
4918
4919 export_name = g_hash_table_lookup (acfg->export_names, method);
4920 if (export_name) {
4921 /* Emit a global symbol for the method */
4922 emit_global_inner (acfg, export_name, TRUE);
4923 emit_label (acfg, export_name);
4924 }
4925
4926 if (cfg->verbose_level > 0)
4927 g_print ("Method %s emitted as %s\n", mono_method_full_name (method, TRUE), cfg->asm_symbol);
4928
4929 acfg->stats.code_size += cfg->code_len;
4930
4931 acfg->cfgs [method_index]->got_offset = acfg->got_offset;
4932
4933 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 ()));
4934
4935 emit_line (acfg);
4936
4937 if (acfg->aot_opts.write_symbols) {
4938 emit_symbol_size (acfg, debug_sym, ".");
4939 g_free (debug_sym);
4940 }
4941
4942 emit_label (acfg, symbol);
4943 g_free (symbol);
4944 }
4945
4946 /**
4947 * encode_patch:
4948 *
4949 * Encode PATCH_INFO into its disk representation.
4950 */
4951 static void
4952 encode_patch (MonoAotCompile *acfg, MonoJumpInfo *patch_info, guint8 *buf, guint8 **endbuf)
4953 {
4954 guint8 *p = buf;
4955
4956 switch (patch_info->type) {
4957 case MONO_PATCH_INFO_NONE:
4958 break;
4959 case MONO_PATCH_INFO_IMAGE:
4960 encode_value (get_image_index (acfg, patch_info->data.image), p, &p);
4961 break;
4962 case MONO_PATCH_INFO_MSCORLIB_GOT_ADDR:
4963 case MONO_PATCH_INFO_JIT_TLS_ID:
4964 case MONO_PATCH_INFO_GC_CARD_TABLE_ADDR:
4965 case MONO_PATCH_INFO_CASTCLASS_CACHE:
4966 break;
4967 case MONO_PATCH_INFO_METHOD_REL:
4968 encode_value ((gint)patch_info->data.offset, p, &p);
4969 break;
4970 case MONO_PATCH_INFO_SWITCH: {
4971 gpointer *table = (gpointer *)patch_info->data.table->table;
4972 int k;
4973
4974 encode_value (patch_info->data.table->table_size, p, &p);
4975 for (k = 0; k < patch_info->data.table->table_size; k++)
4976 encode_value ((int)(gssize)table [k], p, &p);
4977 break;
4978 }
4979 case MONO_PATCH_INFO_METHODCONST:
4980 case MONO_PATCH_INFO_METHOD:
4981 case MONO_PATCH_INFO_METHOD_JUMP:
4982 case MONO_PATCH_INFO_ICALL_ADDR:
4983 case MONO_PATCH_INFO_METHOD_RGCTX:
4984 case MONO_PATCH_INFO_METHOD_CODE_SLOT:
4985 encode_method_ref (acfg, patch_info->data.method, p, &p);
4986 break;
4987 case MONO_PATCH_INFO_INTERNAL_METHOD:
4988 case MONO_PATCH_INFO_JIT_ICALL_ADDR: {
4989 guint32 len = strlen (patch_info->data.name);
4990
4991 encode_value (len, p, &p);
4992
4993 memcpy (p, patch_info->data.name, len);
4994 p += len;
4995 *p++ = '\0';
4996 break;
4997 }
4998 case MONO_PATCH_INFO_LDSTR: {
4999 guint32 image_index = get_image_index (acfg, patch_info->data.token->image);
5000 guint32 token = patch_info->data.token->token;
5001 g_assert (mono_metadata_token_code (token) == MONO_TOKEN_STRING);
5002 encode_value (image_index, p, &p);
5003 encode_value (patch_info->data.token->token - MONO_TOKEN_STRING, p, &p);
5004 break;
5005 }
5006 case MONO_PATCH_INFO_RVA:
5007 case MONO_PATCH_INFO_DECLSEC:
5008 case MONO_PATCH_INFO_LDTOKEN:
5009 case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
5010 encode_value (get_image_index (acfg, patch_info->data.token->image), p, &p);
5011 encode_value (patch_info->data.token->token, p, &p);
5012 encode_value (patch_info->data.token->has_context, p, &p);
5013 if (patch_info->data.token->has_context)
5014 encode_generic_context (acfg, &patch_info->data.token->context, p, &p);
5015 break;
5016 case MONO_PATCH_INFO_EXC_NAME: {
5017 MonoClass *ex_class;
5018
5019 ex_class =
5020 mono_class_from_name (mono_defaults.exception_class->image,
5021 "System", patch_info->data.target);
5022 g_assert (ex_class);
5023 encode_klass_ref (acfg, ex_class, p, &p);
5024 break;
5025 }
5026 case MONO_PATCH_INFO_R4:
5027 encode_value (*((guint32 *)patch_info->data.target), p, &p);
5028 break;
5029 case MONO_PATCH_INFO_R8:
5030 encode_value (((guint32 *)patch_info->data.target) [MINI_LS_WORD_IDX], p, &p);
5031 encode_value (((guint32 *)patch_info->data.target) [MINI_MS_WORD_IDX], p, &p);
5032 break;
5033 case MONO_PATCH_INFO_VTABLE:
5034 case MONO_PATCH_INFO_CLASS:
5035 case MONO_PATCH_INFO_IID:
5036 case MONO_PATCH_INFO_ADJUSTED_IID:
5037 case MONO_PATCH_INFO_CLASS_INIT:
5038 encode_klass_ref (acfg, patch_info->data.klass, p, &p);
5039 break;
5040 case MONO_PATCH_INFO_DELEGATE_TRAMPOLINE:
5041 encode_klass_ref (acfg, patch_info->data.del_tramp->klass, p, &p);
5042 if (patch_info->data.del_tramp->method) {
5043 encode_value (1, p, &p);
5044 encode_method_ref (acfg, patch_info->data.del_tramp->method, p, &p);
5045 } else {
5046 encode_value (0, p, &p);
5047 }
5048 encode_value (patch_info->data.del_tramp->virtual, p, &p);
5049 break;
5050 case MONO_PATCH_INFO_FIELD:
5051 case MONO_PATCH_INFO_SFLDA:
5052 encode_field_info (acfg, patch_info->data.field, p, &p);
5053 break;
5054 case MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG:
5055 break;
5056 case MONO_PATCH_INFO_RGCTX_FETCH: {
5057 MonoJumpInfoRgctxEntry *entry = patch_info->data.rgctx_entry;
5058 guint32 offset;
5059 guint8 *buf2, *p2;
5060
5061 /*
5062 * entry->method has a lenghtly encoding and multiple rgctx_fetch entries
5063 * reference the same method, so encode the method only once.
5064 */
5065 offset = GPOINTER_TO_UINT (g_hash_table_lookup (acfg->method_blob_hash, entry->method));
5066 if (!offset) {
5067 buf2 = g_malloc (1024);
5068 p2 = buf2;
5069
5070 encode_method_ref (acfg, entry->method, p2, &p2);
5071 g_assert (p2 - buf2 < 1024);
5072
5073 offset = add_to_blob (acfg, buf2, p2 - buf2);
5074 g_free (buf2);
5075
5076 g_hash_table_insert (acfg->method_blob_hash, entry->method, GUINT_TO_POINTER (offset + 1));
5077 } else {
5078 offset --;
5079 }
5080
5081 encode_value (offset, p, &p);
5082 g_assert ((int)entry->info_type < 256);
5083 g_assert (entry->data->type < 256);
5084 encode_value ((entry->in_mrgctx ? 1 : 0) | (entry->info_type << 1) | (entry->data->type << 9), p, &p);
5085 encode_patch (acfg, entry->data, p, &p);
5086 break;
5087 }
5088 case MONO_PATCH_INFO_GENERIC_CLASS_INIT:
5089 case MONO_PATCH_INFO_MONITOR_ENTER:
5090 case MONO_PATCH_INFO_MONITOR_EXIT:
5091 case MONO_PATCH_INFO_SEQ_POINT_INFO:
5092 break;
5093 case MONO_PATCH_INFO_LLVM_IMT_TRAMPOLINE:
5094 encode_method_ref (acfg, patch_info->data.imt_tramp->method, p, &p);
5095 encode_value (patch_info->data.imt_tramp->vt_offset, p, &p);
5096 break;
5097 case MONO_PATCH_INFO_SIGNATURE:
5098 encode_signature (acfg, (MonoMethodSignature*)patch_info->data.target, p, &p);
5099 break;
5100 case MONO_PATCH_INFO_TLS_OFFSET:
5101 encode_value (GPOINTER_TO_INT (patch_info->data.target), p, &p);
5102 break;
5103 case MONO_PATCH_INFO_GSHAREDVT_CALL:
5104 encode_signature (acfg, (MonoMethodSignature*)patch_info->data.gsharedvt->sig, p, &p);
5105 encode_method_ref (acfg, patch_info->data.gsharedvt->method, p, &p);
5106 break;
5107 case MONO_PATCH_INFO_GSHAREDVT_METHOD: {
5108 MonoGSharedVtMethodInfo *info = patch_info->data.gsharedvt_method;
5109 int i;
5110
5111 encode_method_ref (acfg, info->method, p, &p);
5112 encode_value (info->num_entries, p, &p);
5113 for (i = 0; i < info->num_entries; ++i) {
5114 MonoRuntimeGenericContextInfoTemplate *template = &info->entries [i];
5115
5116 encode_value (template->info_type, p, &p);
5117 switch (mini_rgctx_info_type_to_patch_info_type (template->info_type)) {
5118 case MONO_PATCH_INFO_CLASS:
5119 encode_klass_ref (acfg, mono_class_from_mono_type (template->data), p, &p);
5120 break;
5121 case MONO_PATCH_INFO_FIELD:
5122 encode_field_info (acfg, template->data, p, &p);
5123 break;
5124 default:
5125 g_assert_not_reached ();
5126 break;
5127 }
5128 }
5129 break;
5130 }
5131 default:
5132 g_warning ("unable to handle jump info %d", patch_info->type);
5133 g_assert_not_reached ();
5134 }
5135
5136 *endbuf = p;
5137 }
5138
5139 static void
5140 encode_patch_list (MonoAotCompile *acfg, GPtrArray *patches, int n_patches, int first_got_offset, guint8 *buf, guint8 **endbuf)
5141 {
5142 guint8 *p = buf;
5143 guint32 pindex, offset;
5144 MonoJumpInfo *patch_info;
5145
5146 encode_value (n_patches, p, &p);
5147
5148 for (pindex = 0; pindex < patches->len; ++pindex) {
5149 patch_info = g_ptr_array_index (patches, pindex);
5150
5151 if (patch_info->type == MONO_PATCH_INFO_NONE || patch_info->type == MONO_PATCH_INFO_BB)
5152 /* Nothing to do */
5153 continue;
5154
5155 offset = get_got_offset (acfg, patch_info);
5156 encode_value (offset, p, &p);
5157 }
5158
5159 *endbuf = p;
5160 }
5161
5162 static void
5163 emit_method_info (MonoAotCompile *acfg, MonoCompile *cfg)
5164 {
5165 MonoMethod *method;
5166 GList *l;
5167 int pindex, buf_size, n_patches;
5168 GPtrArray *patches;
5169 MonoJumpInfo *patch_info;
5170 MonoMethodHeader *header;
5171 guint32 method_index;
5172 guint8 *p, *buf;
5173 guint32 first_got_offset;
5174
5175 method = cfg->orig_method;
5176 header = mono_method_get_header (method);
5177
5178 method_index = get_method_index (acfg, method);
5179
5180 /* Sort relocations */
5181 patches = g_ptr_array_new ();
5182 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next)
5183 g_ptr_array_add (patches, patch_info);
5184 g_ptr_array_sort (patches, compare_patches);
5185
5186 first_got_offset = acfg->cfgs [method_index]->got_offset;
5187
5188 /**********************/
5189 /* Encode method info */
5190 /**********************/
5191
5192 buf_size = (patches->len < 1000) ? 40960 : 40960 + (patches->len * 64);
5193 p = buf = g_malloc (buf_size);
5194
5195 if (mono_class_get_cctor (method->klass))
5196 encode_klass_ref (acfg, method->klass, p, &p);
5197 else
5198 /* Not needed when loading the method */
5199 encode_value (0, p, &p);
5200
5201 /* String table */
5202 if (cfg->opt & MONO_OPT_SHARED) {
5203 encode_value (g_list_length (cfg->ldstr_list), p, &p);
5204 for (l = cfg->ldstr_list; l; l = l->next) {
5205 encode_value ((long)l->data, p, &p);
5206 }
5207 }
5208 else
5209 /* Used only in shared mode */
5210 g_assert (!cfg->ldstr_list);
5211
5212 n_patches = 0;
5213 for (pindex = 0; pindex < patches->len; ++pindex) {
5214 patch_info = g_ptr_array_index (patches, pindex);
5215
5216 if ((patch_info->type == MONO_PATCH_INFO_GOT_OFFSET) ||
5217 (patch_info->type == MONO_PATCH_INFO_NONE)) {
5218 patch_info->type = MONO_PATCH_INFO_NONE;
5219 /* Nothing to do */
5220 continue;
5221 }
5222
5223 if ((patch_info->type == MONO_PATCH_INFO_IMAGE) && (patch_info->data.image == acfg->image)) {
5224 /* Stored in a GOT slot initialized at module load time */
5225 patch_info->type = MONO_PATCH_INFO_NONE;
5226 continue;
5227 }
5228
5229 if (patch_info->type == MONO_PATCH_INFO_GC_CARD_TABLE_ADDR) {
5230 /* Stored in a GOT slot initialized at module load time */
5231 patch_info->type = MONO_PATCH_INFO_NONE;
5232 continue;
5233 }
5234
5235 if (is_plt_patch (patch_info)) {
5236 /* Calls are made through the PLT */
5237 patch_info->type = MONO_PATCH_INFO_NONE;
5238 continue;
5239 }
5240
5241 n_patches ++;
5242 }
5243
5244 if (n_patches)
5245 g_assert (cfg->has_got_slots);
5246
5247 encode_patch_list (acfg, patches, n_patches, first_got_offset, p, &p);
5248
5249 acfg->stats.info_size += p - buf;
5250
5251 g_assert (p - buf < buf_size);
5252
5253 cfg->method_info_offset = add_to_blob (acfg, buf, p - buf);
5254 g_free (buf);
5255 }
5256
5257 static guint32
5258 get_unwind_info_offset (MonoAotCompile *acfg, guint8 *encoded, guint32 encoded_len)
5259 {
5260 guint32 cache_index;
5261 guint32 offset;
5262
5263 /* Reuse the unwind module to canonize and store unwind info entries */
5264 cache_index = mono_cache_unwind_info (encoded, encoded_len);
5265
5266 /* Use +/- 1 to distinguish 0s from missing entries */
5267 offset = GPOINTER_TO_UINT (g_hash_table_lookup (acfg->unwind_info_offsets, GUINT_TO_POINTER (cache_index + 1)));
5268 if (offset)
5269 return offset - 1;
5270 else {
5271 guint8 buf [16];
5272 guint8 *p;
5273
5274 /*
5275 * It would be easier to use assembler symbols, but the caller needs an
5276 * offset now.
5277 */
5278 offset = acfg->unwind_info_offset;
5279 g_hash_table_insert (acfg->unwind_info_offsets, GUINT_TO_POINTER (cache_index + 1), GUINT_TO_POINTER (offset + 1));
5280 g_ptr_array_add (acfg->unwind_ops, GUINT_TO_POINTER (cache_index));
5281
5282 p = buf;
5283 encode_value (encoded_len, p, &p);
5284
5285 acfg->unwind_info_offset += encoded_len + (p - buf);
5286 return offset;
5287 }
5288 }
5289
5290 static void
5291 emit_exception_debug_info (MonoAotCompile *acfg, MonoCompile *cfg)
5292 {
5293 MonoMethod *method;
5294 int i, k, buf_size, method_index;
5295 guint32 debug_info_size;
5296 guint8 *code;
5297 MonoMethodHeader *header;
5298 guint8 *p, *buf, *debug_info;
5299 MonoJitInfo *jinfo = cfg->jit_info;
5300 guint32 flags;
5301 gboolean use_unwind_ops = FALSE;
5302 MonoSeqPointInfo *seq_points;
5303
5304 method = cfg->orig_method;
5305 code = cfg->native_code;
5306 header = cfg->header;
5307
5308 method_index = get_method_index (acfg, method);
5309
5310 if (!acfg->aot_opts.nodebug) {
5311 mono_debug_serialize_debug_info (cfg, &debug_info, &debug_info_size);
5312 } else {
5313 debug_info = NULL;
5314 debug_info_size = 0;
5315 }
5316
5317 seq_points = cfg->seq_point_info;
5318
5319 buf_size = header->num_clauses * 256 + debug_info_size + 2048 + (seq_points ? (seq_points->len * 128) : 0) + cfg->gc_map_size;
5320 p = buf = g_malloc (buf_size);
5321
5322 use_unwind_ops = cfg->unwind_ops != NULL;
5323
5324 flags = (jinfo->has_generic_jit_info ? 1 : 0) | (use_unwind_ops ? 2 : 0) | (header->num_clauses ? 4 : 0) | (seq_points ? 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);
5325
5326 encode_value (flags, p, &p);
5327
5328 if (use_unwind_ops) {
5329 guint32 encoded_len;
5330 guint8 *encoded;
5331 guint32 unwind_desc;
5332
5333 encoded = mono_unwind_ops_encode (cfg->unwind_ops, &encoded_len);
5334
5335 unwind_desc = get_unwind_info_offset (acfg, encoded, encoded_len);
5336 g_assert (unwind_desc < 0xffff);
5337 if (cfg->has_unwind_info_for_epilog) {
5338 /*
5339 * The lower 16 bits identify the unwind descriptor, the upper 16 bits contain the offset of
5340 * the start of the epilog from the end of the method.
5341 */
5342 g_assert (cfg->code_size - cfg->epilog_begin < 0xffff);
5343 encode_value (((cfg->code_size - cfg->epilog_begin) << 16) | unwind_desc, p, &p);
5344 g_free (encoded);
5345 } else {
5346 encode_value (unwind_desc, p, &p);
5347 }
5348 } else {
5349 encode_value (jinfo->unwind_info, p, &p);
5350 }
5351
5352 /*Encode the number of holes before the number of clauses to make decoding easier*/
5353 if (jinfo->has_try_block_holes) {
5354 MonoTryBlockHoleTableJitInfo *table = mono_jit_info_get_try_block_hole_table_info (jinfo);
5355 encode_value (table->num_holes, p, &p);
5356 }
5357
5358 /* Exception table */
5359 if (cfg->compile_llvm) {
5360 /*
5361 * When using LLVM, we can't emit some data, like pc offsets, this reg/offset etc.,
5362 * since the information is only available to llc. Instead, we let llc save the data
5363 * into the LSDA, and read it from there at runtime.
5364 */
5365 /* The assembly might be CIL stripped so emit the data ourselves */
5366 if (header->num_clauses)
5367 encode_value (header->num_clauses, p, &p);
5368
5369 for (k = 0; k < header->num_clauses; ++k) {
5370 MonoExceptionClause *clause;
5371
5372 clause = &header->clauses [k];
5373
5374 encode_value (clause->flags, p, &p);
5375 if (clause->data.catch_class) {
5376 encode_value (1, p, &p);
5377 encode_klass_ref (acfg, clause->data.catch_class, p, &p);
5378 } else {
5379 encode_value (0, p, &p);
5380 }
5381
5382 /* Emit a list of nesting clauses */
5383 for (i = 0; i < header->num_clauses; ++i) {
5384 gint32 cindex1 = k;
5385 MonoExceptionClause *clause1 = &header->clauses [cindex1];
5386 gint32 cindex2 = i;
5387 MonoExceptionClause *clause2 = &header->clauses [cindex2];
5388
5389 if (cindex1 != cindex2 && clause1->try_offset >= clause2->try_offset && clause1->handler_offset <= clause2->handler_offset)
5390 encode_value (i, p, &p);
5391 }
5392 encode_value (-1, p, &p);
5393 }
5394 } else {
5395 if (jinfo->num_clauses)
5396 encode_value (jinfo->num_clauses, p, &p);
5397
5398 for (k = 0; k < jinfo->num_clauses; ++k) {
5399 MonoJitExceptionInfo *ei = &jinfo->clauses [k];
5400
5401 encode_value (ei->flags, p, &p);
5402 encode_value (ei->exvar_offset, p, &p);
5403
5404 if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER || ei->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
5405 encode_value ((gint)((guint8*)ei->data.filter - code), p, &p);
5406 else {
5407 if (ei->data.catch_class) {
5408 guint8 *buf2, *p2;
5409 int len;
5410
5411 buf2 = g_malloc (4096);
5412 p2 = buf2;
5413 encode_klass_ref (acfg, ei->data.catch_class, p2, &p2);
5414 len = p2 - buf2;
5415 g_assert (len < 4096);
5416 encode_value (len, p, &p);
5417 memcpy (p, buf2, len);
5418 p += p2 - buf2;
5419 g_free (buf2);
5420 } else {
5421 encode_value (0, p, &p);
5422 }
5423 }
5424
5425 encode_value ((gint)((guint8*)ei->try_start - code), p, &p);
5426 encode_value ((gint)((guint8*)ei->try_end - code), p, &p);
5427 encode_value ((gint)((guint8*)ei->handler_start - code), p, &p);
5428 }
5429 }
5430
5431 if (jinfo->has_try_block_holes) {
5432 MonoTryBlockHoleTableJitInfo *table = mono_jit_info_get_try_block_hole_table_info (jinfo);
5433 for (i = 0; i < table->num_holes; ++i) {
5434 MonoTryBlockHoleJitInfo *hole = &table->holes [i];
5435 encode_value (hole->clause, p, &p);
5436 encode_value (hole->length, p, &p);
5437 encode_value (hole->offset, p, &p);
5438 }
5439 }
5440
5441 if (jinfo->has_arch_eh_info) {
5442 MonoArchEHJitInfo *eh_info;
5443
5444 eh_info = mono_jit_info_get_arch_eh_info (jinfo);
5445 encode_value (eh_info->stack_size, p, &p);
5446 }
5447
5448 if (jinfo->has_generic_jit_info) {
5449 MonoGenericJitInfo *gi = mono_jit_info_get_generic_jit_info (jinfo);
5450 MonoGenericSharingContext* gsctx = gi->generic_sharing_context;
5451 guint8 *p1;
5452 guint8 *buf2, *p2;
5453 int len;
5454
5455 p1 = p;
5456 encode_value (gi->nlocs, p, &p);
5457 if (gi->nlocs) {
5458 for (i = 0; i < gi->nlocs; ++i) {
5459 MonoDwarfLocListEntry *entry = &gi->locations [i];
5460
5461 encode_value (entry->is_reg ? 1 : 0, p, &p);
5462 encode_value (entry->reg, p, &p);
5463 if (!entry->is_reg)
5464 encode_value (entry->offset, p, &p);
5465 if (i == 0)
5466 g_assert (entry->from == 0);
5467 else
5468 encode_value (entry->from, p, &p);
5469 encode_value (entry->to, p, &p);
5470 }
5471 } else {
5472 if (!cfg->compile_llvm) {
5473 encode_value (gi->has_this ? 1 : 0, p, &p);
5474 encode_value (gi->this_reg, p, &p);
5475 encode_value (gi->this_offset, p, &p);
5476 }
5477 }
5478
5479 /*
5480 * Need to encode jinfo->method too, since it is not equal to 'method'
5481 * when using generic sharing.
5482 */
5483 buf2 = g_malloc (4096);
5484 p2 = buf2;
5485 encode_method_ref (acfg, jinfo->d.method, p2, &p2);
5486 len = p2 - buf2;
5487 g_assert (len < 4096);
5488 encode_value (len, p, &p);
5489 memcpy (p, buf2, len);
5490 p += p2 - buf2;
5491 g_free (buf2);
5492
5493 if (gsctx && (gsctx->var_is_vt || gsctx->mvar_is_vt)) {
5494 MonoMethodInflated *inflated;
5495 MonoGenericContext *context;
5496 MonoGenericInst *inst;
5497
5498 g_assert (jinfo->d.method->is_inflated);
5499 inflated = (MonoMethodInflated*)jinfo->d.method;
5500 context = &inflated->context;
5501
5502 encode_value (1, p, &p);
5503 if (context->class_inst) {
5504 inst = context->class_inst;
5505
5506 encode_value (inst->type_argc, p, &p);
5507 for (i = 0; i < inst->type_argc; ++i)
5508 encode_value (gsctx->var_is_vt [i], p, &p);
5509 } else {
5510 encode_value (0, p, &p);
5511 }
5512 if (context->method_inst) {
5513 inst = context->method_inst;
5514
5515 encode_value (inst->type_argc, p, &p);
5516 for (i = 0; i < inst->type_argc; ++i)
5517 encode_value (gsctx->mvar_is_vt [i], p, &p);
5518 } else {
5519 encode_value (0, p, &p);
5520 }
5521 } else {
5522 encode_value (0, p, &p);
5523 }
5524 }
5525
5526 if (seq_points) {
5527 int il_offset, native_offset, last_il_offset, last_native_offset, j;
5528
5529 encode_value (seq_points->len, p, &p);
5530 last_il_offset = last_native_offset = 0;
5531 for (i = 0; i < seq_points->len; ++i) {
5532 SeqPoint *sp = &seq_points->seq_points [i];
5533 il_offset = sp->il_offset;
5534 native_offset = sp->native_offset;
5535 encode_value (il_offset - last_il_offset, p, &p);
5536 encode_value (native_offset - last_native_offset, p, &p);
5537 last_il_offset = il_offset;
5538 last_native_offset = native_offset;
5539
5540 encode_value (sp->flags, p, &p);
5541 encode_value (sp->next_len, p, &p);
5542 for (j = 0; j < sp->next_len; ++j)
5543 encode_value (sp->next [j], p, &p);
5544 }
5545 }
5546
5547 g_assert (debug_info_size < buf_size);
5548
5549 encode_value (debug_info_size, p, &p);
5550 if (debug_info_size) {
5551 memcpy (p, debug_info, debug_info_size);
5552 p += debug_info_size;
5553 g_free (debug_info);
5554 }
5555
5556 /* GC Map */
5557 if (cfg->gc_map) {
5558 encode_value (cfg->gc_map_size, p, &p);
5559 /* The GC map requires 4 bytes of alignment */
5560 while ((gsize)p % 4)
5561 p ++;
5562 memcpy (p, cfg->gc_map, cfg->gc_map_size);
5563 p += cfg->gc_map_size;
5564 }
5565
5566 acfg->stats.ex_info_size += p - buf;
5567
5568 g_assert (p - buf < buf_size);
5569
5570 /* Emit info */
5571 /* The GC Map requires 4 byte alignment */
5572 cfg->ex_info_offset = add_to_blob_aligned (acfg, buf, p - buf, cfg->gc_map ? 4 : 1);
5573 g_free (buf);
5574 }
5575
5576 static guint32
5577 emit_klass_info (MonoAotCompile *acfg, guint32 token)
5578 {
5579 MonoClass *klass = mono_class_get (acfg->image, token);
5580 guint8 *p, *buf;
5581 int i, buf_size, res;
5582 gboolean no_special_static, cant_encode;
5583 gpointer iter = NULL;
5584
5585 if (!klass) {
5586 mono_loader_clear_error ();
5587
5588 buf_size = 16;
5589
5590 p = buf = g_malloc (buf_size);
5591
5592 /* Mark as unusable */
5593 encode_value (-1, p, &p);
5594
5595 res = add_to_blob (acfg, buf, p - buf);
5596 g_free (buf);
5597
5598 return res;
5599 }
5600
5601 buf_size = 10240 + (klass->vtable_size * 16);
5602 p = buf = g_malloc (buf_size);
5603
5604 g_assert (klass);
5605
5606 mono_class_init (klass);
5607
5608 mono_class_get_nested_types (klass, &iter);
5609 g_assert (klass->nested_classes_inited);
5610
5611 mono_class_setup_vtable (klass);
5612
5613 /*
5614 * Emit all the information which is required for creating vtables so
5615 * the runtime does not need to create the MonoMethod structures which
5616 * take up a lot of space.
5617 */
5618
5619 no_special_static = !mono_class_has_special_static_fields (klass);
5620
5621 /* Check whenever we have enough info to encode the vtable */
5622 cant_encode = FALSE;
5623 for (i = 0; i < klass->vtable_size; ++i) {
5624 MonoMethod *cm = klass->vtable [i];
5625
5626 if (cm && mono_method_signature (cm)->is_inflated && !g_hash_table_lookup (acfg->token_info_hash, cm))
5627 cant_encode = TRUE;
5628 }
5629
5630 mono_class_has_finalizer (klass);
5631
5632 if (klass->generic_container || cant_encode) {
5633 encode_value (-1, p, &p);
5634 } else {
5635 encode_value (klass->vtable_size, p, &p);
5636 encode_value ((klass->generic_container ? (1 << 8) : 0) | (no_special_static << 7) | (klass->has_static_refs << 6) | (klass->has_references << 5) | ((klass->blittable << 4) | ((klass->ext && klass->ext->nested_classes) ? 1 : 0) << 3) | (klass->has_cctor << 2) | (klass->has_finalize << 1) | klass->ghcimpl, p, &p);
5637 if (klass->has_cctor)
5638 encode_method_ref (acfg, mono_class_get_cctor (klass), p, &p);
5639 if (klass->has_finalize)
5640 encode_method_ref (acfg, mono_class_get_finalizer (klass), p, &p);
5641
5642 encode_value (klass->instance_size, p, &p);
5643 encode_value (mono_class_data_size (klass), p, &p);
5644 encode_value (klass->packing_size, p, &p);
5645 encode_value (klass->min_align, p, &p);
5646
5647 for (i = 0; i < klass->vtable_size; ++i) {
5648 MonoMethod *cm = klass->vtable [i];
5649
5650 if (cm)
5651 encode_method_ref (acfg, cm, p, &p);
5652 else
5653 encode_value (0, p, &p);
5654 }
5655 }
5656
5657 acfg->stats.class_info_size += p - buf;
5658
5659 g_assert (p - buf < buf_size);
5660 res = add_to_blob (acfg, buf, p - buf);
5661 g_free (buf);
5662
5663 return res;
5664 }
5665
5666 static char*
5667 get_plt_entry_debug_sym (MonoAotCompile *acfg, MonoJumpInfo *ji, GHashTable *cache)
5668 {
5669 char *debug_sym = NULL;
5670 char *s;
5671
5672 switch (ji->type) {
5673 case MONO_PATCH_INFO_METHOD:
5674 debug_sym = get_debug_sym (ji->data.method, "plt_", cache);
5675 break;
5676 case MONO_PATCH_INFO_INTERNAL_METHOD:
5677 debug_sym = g_strdup_printf ("plt__jit_icall_%s", ji->data.name);
5678 break;
5679 case MONO_PATCH_INFO_CLASS_INIT:
5680 s = mono_type_get_name (&ji->data.klass->byval_arg);
5681 debug_sym = g_strdup_printf ("plt__class_init_%s", s);
5682 g_free (s);
5683 break;
5684 case MONO_PATCH_INFO_RGCTX_FETCH:
5685 debug_sym = g_strdup_printf ("plt__rgctx_fetch_%d", acfg->label_generator ++);
5686 break;
5687 case MONO_PATCH_INFO_ICALL_ADDR: {
5688 char *s = get_debug_sym (ji->data.method, "", cache);
5689
5690 debug_sym = g_strdup_printf ("plt__icall_native_%s", s);
5691 g_free (s);
5692 break;
5693 }
5694 case MONO_PATCH_INFO_JIT_ICALL_ADDR:
5695 debug_sym = g_strdup_printf ("plt__jit_icall_native_%s", ji->data.name);
5696 break;
5697 case MONO_PATCH_INFO_GENERIC_CLASS_INIT:
5698 debug_sym = g_strdup_printf ("plt__generic_class_init");
5699 break;
5700 default:
5701 break;
5702 }
5703
5704 return sanitize_symbol (acfg, debug_sym);
5705 }
5706
5707 /*
5708 * Calls made from AOTed code are routed through a table of jumps similar to the
5709 * ELF PLT (Program Linkage Table). Initially the PLT entries jump to code which transfers
5710 * control to the AOT runtime through a trampoline.
5711 */
5712 static void
5713 emit_plt (MonoAotCompile *acfg)
5714 {
5715 char symbol [128];
5716 int i;
5717
5718 emit_line (acfg);
5719 sprintf (symbol, "plt");
5720
5721 emit_section_change (acfg, ".text", 0);
5722 emit_alignment (acfg, NACL_SIZE(16, kNaClAlignment));
5723 emit_label (acfg, symbol);
5724 emit_label (acfg, acfg->plt_symbol);
5725
5726 for (i = 0; i < acfg->plt_offset; ++i) {
5727 char *debug_sym = NULL;
5728 MonoPltEntry *plt_entry = NULL;
5729 MonoJumpInfo *ji;
5730
5731 if (i == 0)
5732 /*
5733 * The first plt entry is unused.
5734 */
5735 continue;
5736
5737 plt_entry = g_hash_table_lookup (acfg->plt_offset_to_entry, GUINT_TO_POINTER (i));
5738 ji = plt_entry->ji;
5739
5740 if (acfg->llvm) {
5741 /*
5742 * If the target is directly callable, alias the plt symbol to point to
5743 * the method code.
5744 * FIXME: Use this to simplify emit_and_reloc_code ().
5745 * FIXME: Avoid the got slot.
5746 * FIXME: Add support to the binary writer.
5747 */
5748 if (ji && is_direct_callable (acfg, NULL, ji) && !acfg->use_bin_writer) {
5749 MonoCompile *callee_cfg = g_hash_table_lookup (acfg->method_to_cfg, ji->data.method);
5750
5751 if (callee_cfg) {
5752 if (acfg->thumb_mixed && !callee_cfg->compile_llvm) {
5753 /* LLVM calls the PLT entries using bl, so emit a stub */
5754 emit_set_thumb_mode (acfg);
5755 fprintf (acfg->fp, "\n.thumb_func\n");
5756 emit_label (acfg, plt_entry->llvm_symbol);
5757 fprintf (acfg->fp, "bx pc\n");
5758 fprintf (acfg->fp, "nop\n");
5759 emit_set_arm_mode (acfg);
5760 fprintf (acfg->fp, "b %s\n", callee_cfg->asm_symbol);
5761 } else {
5762 fprintf (acfg->fp, "\n.set %s, %s\n", plt_entry->llvm_symbol, callee_cfg->asm_symbol);
5763 }
5764 continue;
5765 }
5766 }
5767 }
5768
5769 debug_sym = plt_entry->debug_sym;
5770
5771 if (acfg->thumb_mixed && !plt_entry->jit_used)
5772 /* Emit only a thumb version */
5773 continue;
5774
5775 if (acfg->llvm && !acfg->thumb_mixed)
5776 emit_label (acfg, plt_entry->llvm_symbol);
5777
5778 if (debug_sym) {
5779 if (acfg->need_no_dead_strip) {
5780 emit_unset_mode (acfg);
5781 fprintf (acfg->fp, " .no_dead_strip %s\n", debug_sym);
5782 }
5783 emit_local_symbol (acfg, debug_sym, NULL, TRUE);
5784 emit_label (acfg, debug_sym);
5785 }
5786
5787 emit_label (acfg, plt_entry->symbol);
5788
5789 arch_emit_plt_entry (acfg, i);
5790
5791 if (debug_sym)
5792 emit_symbol_size (acfg, debug_sym, ".");
5793 }
5794
5795 if (acfg->thumb_mixed) {
5796 /* Make sure the ARM symbols don't alias the thumb ones */
5797 emit_zero_bytes (acfg, 16);
5798
5799 /*
5800 * Emit a separate set of PLT entries using thumb2 which is called by LLVM generated
5801 * code.
5802 */
5803 for (i = 0; i < acfg->plt_offset; ++i) {
5804 char *debug_sym = NULL;
5805 MonoPltEntry *plt_entry = NULL;
5806 MonoJumpInfo *ji;
5807
5808 if (i == 0)
5809 continue;
5810
5811 plt_entry = g_hash_table_lookup (acfg->plt_offset_to_entry, GUINT_TO_POINTER (i));
5812 ji = plt_entry->ji;
5813
5814 if (ji && is_direct_callable (acfg, NULL, ji) && !acfg->use_bin_writer)
5815 continue;
5816
5817 /* Skip plt entries not actually called by LLVM code */
5818 if (!plt_entry->llvm_used)
5819 continue;
5820
5821 if (acfg->aot_opts.write_symbols) {
5822 if (plt_entry->debug_sym)
5823 debug_sym = g_strdup_printf ("%s_thumb", plt_entry->debug_sym);
5824 }
5825
5826 if (debug_sym) {
5827 #if defined(TARGET_MACH)
5828 fprintf (acfg->fp, " .thumb_func %s\n", debug_sym);
5829 fprintf (acfg->fp, " .no_dead_strip %s\n", debug_sym);
5830 #endif
5831 emit_local_symbol (acfg, debug_sym, NULL, TRUE);
5832 emit_label (acfg, debug_sym);
5833 }
5834 fprintf (acfg->fp, "\n.thumb_func\n");
5835
5836 emit_label (acfg, plt_entry->llvm_symbol);
5837
5838 arch_emit_llvm_plt_entry (acfg, i);
5839
5840 if (debug_sym) {
5841 emit_symbol_size (acfg, debug_sym, ".");
5842 g_free (debug_sym);
5843 }
5844 }
5845 }
5846
5847 emit_symbol_size (acfg, acfg->plt_symbol, ".");
5848
5849 sprintf (symbol, "plt_end");
5850 emit_label (acfg, symbol);
5851 }
5852
5853 /*
5854 * emit_trampoline_full:
5855 *
5856 * If EMIT_TINFO is TRUE, emit additional information which can be used to create a MonoJitInfo for this trampoline by
5857 * create_jit_info_for_trampoline ().
5858 */
5859 static G_GNUC_UNUSED void
5860 emit_trampoline_full (MonoAotCompile *acfg, int got_offset, MonoTrampInfo *info, gboolean emit_tinfo)
5861 {
5862 char start_symbol [256];
5863 char end_symbol [256];
5864 char symbol [256];
5865 guint32 buf_size, info_offset;
5866 MonoJumpInfo *patch_info;
5867 guint8 *buf, *p;
5868 GPtrArray *patches;
5869 char *name;
5870 guint8 *code;
5871 guint32 code_size;
5872 MonoJumpInfo *ji;
5873 GSList *unwind_ops;
5874
5875 g_assert (info);
5876
5877 name = info->name;
5878 code = info->code;
5879 code_size = info->code_size;
5880 ji = info->ji;
5881 unwind_ops = info->unwind_ops;
5882
5883 #ifdef __native_client_codegen__
5884 mono_nacl_fix_patches (code, ji);
5885 #endif
5886
5887 /* Emit code */
5888
5889 sprintf (start_symbol, "%s%s", acfg->user_symbol_prefix, name);
5890
5891 emit_section_change (acfg, ".text", 0);
5892 emit_global (acfg, start_symbol, TRUE);
5893 emit_alignment (acfg, AOT_FUNC_ALIGNMENT);
5894 emit_label (acfg, start_symbol);
5895
5896 sprintf (symbol, "%snamed_%s", acfg->temp_prefix, name);
5897 emit_label (acfg, symbol);
5898
5899 /*
5900 * The code should access everything through the GOT, so we pass
5901 * TRUE here.
5902 */
5903 emit_and_reloc_code (acfg, NULL, code, code_size, ji, TRUE, NULL);
5904
5905 emit_symbol_size (acfg, start_symbol, ".");
5906
5907 if (emit_tinfo) {
5908 sprintf (end_symbol, "%snamede_%s", acfg->temp_prefix, name);
5909 emit_label (acfg, end_symbol);
5910 }
5911
5912 /* Emit info */
5913
5914 /* Sort relocations */
5915 patches = g_ptr_array_new ();
5916 for (patch_info = ji; patch_info; patch_info = patch_info->next)
5917 if (patch_info->type != MONO_PATCH_INFO_NONE)
5918 g_ptr_array_add (patches, patch_info);
5919 g_ptr_array_sort (patches, compare_patches);
5920
5921 buf_size = patches->len * 128 + 128;
5922 buf = g_malloc (buf_size);
5923 p = buf;
5924
5925 encode_patch_list (acfg, patches, patches->len, got_offset, p, &p);
5926 g_assert (p - buf < buf_size);
5927
5928 sprintf (symbol, "%s%s_p", acfg->user_symbol_prefix, name);
5929
5930 info_offset = add_to_blob (acfg, buf, p - buf);
5931
5932 emit_section_change (acfg, RODATA_SECT, 0);
5933 emit_global (acfg, symbol, FALSE);
5934 emit_label (acfg, symbol);
5935
5936 emit_int32 (acfg, info_offset);
5937
5938 if (emit_tinfo) {
5939 guint8 *encoded;
5940 guint32 encoded_len;
5941 guint32 uw_offset;
5942
5943 /*
5944 * Emit additional information which can be used to reconstruct a partial MonoTrampInfo.
5945 */
5946 encoded = mono_unwind_ops_encode (info->unwind_ops, &encoded_len);
5947 uw_offset = get_unwind_info_offset (acfg, encoded, encoded_len);
5948 g_free (encoded);
5949
5950 emit_symbol_diff (acfg, end_symbol, start_symbol, 0);
5951 emit_int32 (acfg, uw_offset);
5952 }
5953
5954 /* Emit debug info */
5955 if (unwind_ops) {
5956 char symbol2 [256];
5957
5958 sprintf (symbol, "%s", name);
5959 sprintf (symbol2, "%snamed_%s", acfg->temp_prefix, name);
5960
5961 if (acfg->dwarf)
5962 mono_dwarf_writer_emit_trampoline (acfg->dwarf, symbol, symbol2, NULL, NULL, code_size, unwind_ops);
5963 }
5964 }
5965
5966 static G_GNUC_UNUSED void
5967 emit_trampoline (MonoAotCompile *acfg, int got_offset, MonoTrampInfo *info)
5968 {
5969 emit_trampoline_full (acfg, got_offset, info, FALSE);
5970 }
5971
5972 static void
5973 emit_trampolines (MonoAotCompile *acfg)
5974 {
5975 char symbol [256];
5976 char end_symbol [256];
5977 int i, tramp_got_offset;
5978 MonoAotTrampoline ntype;
5979 #ifdef MONO_ARCH_HAVE_FULL_AOT_TRAMPOLINES
5980 int tramp_type;
5981 #endif
5982
5983 if (!acfg->aot_opts.full_aot)
5984 return;
5985
5986 g_assert (acfg->image->assembly);
5987
5988 /* Currently, we emit most trampolines into the mscorlib AOT image. */
5989 if (strcmp (acfg->image->assembly->aname.name, "mscorlib") == 0) {
5990 #ifdef MONO_ARCH_HAVE_FULL_AOT_TRAMPOLINES
5991 MonoTrampInfo *info;
5992
5993 /*
5994 * Emit the generic trampolines.
5995 *
5996 * We could save some code by treating the generic trampolines as a wrapper
5997 * method, but that approach has its own complexities, so we choose the simpler
5998 * method.
5999 */
6000 for (tramp_type = 0; tramp_type < MONO_TRAMPOLINE_NUM; ++tramp_type) {
6001 /* we overload the boolean here to indicate the slightly different trampoline needed, see mono_arch_create_generic_trampoline() */
6002 #ifdef DISABLE_REMOTING
6003 if (tramp_type == MONO_TRAMPOLINE_GENERIC_VIRTUAL_REMOTING)
6004 continue;
6005 #endif
6006 #ifndef MONO_ARCH_HAVE_HANDLER_BLOCK_GUARD
6007 if (tramp_type == MONO_TRAMPOLINE_HANDLER_BLOCK_GUARD)
6008 continue;
6009 #endif
6010 mono_arch_create_generic_trampoline (tramp_type, &info, acfg->aot_opts.use_trampolines_page? 2: TRUE);
6011 emit_trampoline (acfg, acfg->got_offset, info);
6012 }
6013
6014 mono_arch_get_nullified_class_init_trampoline (&info);
6015 emit_trampoline (acfg, acfg->got_offset, info);
6016 #if defined(MONO_ARCH_MONITOR_OBJECT_REG)
6017 mono_arch_create_monitor_enter_trampoline (&info, TRUE);
6018 emit_trampoline (acfg, acfg->got_offset, info);
6019 mono_arch_create_monitor_exit_trampoline (&info, TRUE);
6020 emit_trampoline (acfg, acfg->got_offset, info);
6021 #endif
6022
6023 mono_arch_create_generic_class_init_trampoline (&info, TRUE);
6024 emit_trampoline (acfg, acfg->got_offset, info);
6025
6026 /* Emit the exception related code pieces */
6027 mono_arch_get_restore_context (&info, TRUE);
6028 emit_trampoline (acfg, acfg->got_offset, info);
6029 mono_arch_get_call_filter (&info, TRUE);
6030 emit_trampoline (acfg, acfg->got_offset, info);
6031 mono_arch_get_throw_exception (&info, TRUE);
6032 emit_trampoline (acfg, acfg->got_offset, info);
6033 mono_arch_get_rethrow_exception (&info, TRUE);
6034 emit_trampoline (acfg, acfg->got_offset, info);
6035 mono_arch_get_throw_corlib_exception (&info, TRUE);
6036 emit_trampoline (acfg, acfg->got_offset, info);
6037
6038 #ifdef MONO_ARCH_GSHAREDVT_SUPPORTED
6039 mono_arch_get_gsharedvt_trampoline (&info, TRUE);
6040 if (info) {
6041 emit_trampoline_full (acfg, acfg->got_offset, info, TRUE);
6042
6043 /* Create a separate out trampoline for more information in stack traces */
6044 info->name = g_strdup ("gsharedvt_out_trampoline");
6045 emit_trampoline_full (acfg, acfg->got_offset, info, TRUE);
6046 }
6047 #endif
6048
6049 #if defined(MONO_ARCH_HAVE_GET_TRAMPOLINES)
6050 {
6051 GSList *l = mono_arch_get_trampolines (TRUE);
6052
6053 while (l) {
6054 MonoTrampInfo *info = l->data;
6055
6056 emit_trampoline (acfg, acfg->got_offset, info);
6057 l = l->next;
6058 }
6059 }
6060 #endif
6061
6062 for (i = 0; i < acfg->aot_opts.nrgctx_fetch_trampolines; ++i) {
6063 int offset;
6064
6065 offset = MONO_RGCTX_SLOT_MAKE_RGCTX (i);
6066 mono_arch_create_rgctx_lazy_fetch_trampoline (offset, &info, TRUE);
6067 emit_trampoline (acfg, acfg->got_offset, info);
6068
6069 offset = MONO_RGCTX_SLOT_MAKE_MRGCTX (i);
6070 mono_arch_create_rgctx_lazy_fetch_trampoline (offset, &info, TRUE);
6071 emit_trampoline (acfg, acfg->got_offset, info);
6072 }
6073
6074 #ifdef MONO_ARCH_HAVE_GENERAL_RGCTX_LAZY_FETCH_TRAMPOLINE
6075 mono_arch_create_general_rgctx_lazy_fetch_trampoline (&info, TRUE);
6076 emit_trampoline (acfg, acfg->got_offset, info);
6077 #endif
6078
6079 {
6080 GSList *l;
6081
6082 /* delegate_invoke_impl trampolines */
6083 l = mono_arch_get_delegate_invoke_impls ();
6084 while (l) {
6085 MonoTrampInfo *info = l->data;
6086
6087 emit_trampoline (acfg, acfg->got_offset, info);
6088 l = l->next;
6089 }
6090 }
6091
6092 #endif /* #ifdef MONO_ARCH_HAVE_FULL_AOT_TRAMPOLINES */
6093
6094 /* Emit trampolines which are numerous */
6095
6096 /*
6097 * These include the following:
6098 * - specific trampolines
6099 * - static rgctx invoke trampolines
6100 * - imt thunks
6101 * These trampolines have the same code, they are parameterized by GOT
6102 * slots.
6103 * They are defined in this file, in the arch_... routines instead of
6104 * in tramp-<ARCH>.c, since it is easier to do it this way.
6105 */
6106
6107 /*
6108 * When running in aot-only mode, we can't create specific trampolines at
6109 * runtime, so we create a few, and save them in the AOT file.
6110 * Normal trampolines embed their argument as a literal inside the
6111 * trampoline code, we can't do that here, so instead we embed an offset
6112 * which needs to be added to the trampoline address to get the address of
6113 * the GOT slot which contains the argument value.
6114 * The generated trampolines jump to the generic trampolines using another
6115 * GOT slot, which will be setup by the AOT loader to point to the
6116 * generic trampoline code of the given type.
6117 */
6118
6119 /*
6120 * FIXME: Maybe we should use more specific trampolines (i.e. one class init for
6121 * each class).
6122 */
6123
6124 emit_section_change (acfg, ".text", 0);
6125
6126 tramp_got_offset = acfg->got_offset;
6127
6128 for (ntype = 0; ntype < MONO_AOT_TRAMP_NUM; ++ntype) {
6129 switch (ntype) {
6130 case MONO_AOT_TRAMP_SPECIFIC:
6131 sprintf (symbol, "specific_trampolines");
6132 break;
6133 case MONO_AOT_TRAMP_STATIC_RGCTX:
6134 sprintf (symbol, "static_rgctx_trampolines");
6135 break;
6136 case MONO_AOT_TRAMP_IMT_THUNK:
6137 sprintf (symbol, "imt_thunks");
6138 break;
6139 case MONO_AOT_TRAMP_GSHAREDVT_ARG:
6140 sprintf (symbol, "gsharedvt_arg_trampolines");
6141 break;
6142 default:
6143 g_assert_not_reached ();
6144 }
6145
6146 sprintf (end_symbol, "%s_e", symbol);
6147
6148 if (acfg->aot_opts.write_symbols)
6149 emit_local_symbol (acfg, symbol, end_symbol, TRUE);
6150
6151 emit_alignment (acfg, AOT_FUNC_ALIGNMENT);
6152 emit_label (acfg, symbol);
6153
6154 acfg->trampoline_got_offset_base [ntype] = tramp_got_offset;
6155
6156 for (i = 0; i < acfg->num_trampolines [ntype]; ++i) {
6157 int tramp_size = 0;
6158
6159 switch (ntype) {
6160 case MONO_AOT_TRAMP_SPECIFIC:
6161 arch_emit_specific_trampoline (acfg, tramp_got_offset, &tramp_size);
6162 tramp_got_offset += 2;
6163 break;
6164 case MONO_AOT_TRAMP_STATIC_RGCTX:
6165 arch_emit_static_rgctx_trampoline (acfg, tramp_got_offset, &tramp_size);
6166 tramp_got_offset += 2;
6167 break;
6168 case MONO_AOT_TRAMP_IMT_THUNK:
6169 arch_emit_imt_thunk (acfg, tramp_got_offset, &tramp_size);
6170 tramp_got_offset += 1;
6171 break;
6172 case MONO_AOT_TRAMP_GSHAREDVT_ARG:
6173 arch_emit_gsharedvt_arg_trampoline (acfg, tramp_got_offset, &tramp_size);
6174 tramp_got_offset += 2;
6175 break;
6176 default:
6177 g_assert_not_reached ();
6178 }
6179 #ifdef __native_client_codegen__
6180 /* align to avoid 32-byte boundary crossings */
6181 emit_alignment (acfg, AOT_FUNC_ALIGNMENT);
6182 #endif
6183
6184 if (!acfg->trampoline_size [ntype]) {
6185 g_assert (tramp_size);
6186 acfg->trampoline_size [ntype] = tramp_size;
6187 }
6188 }
6189
6190 emit_label (acfg, end_symbol);
6191 emit_int32 (acfg, 0);
6192 }
6193
6194 arch_emit_specific_trampoline_pages (acfg);
6195
6196 /* Reserve some entries at the end of the GOT for our use */
6197 acfg->num_trampoline_got_entries = tramp_got_offset - acfg->got_offset;
6198 }
6199
6200 acfg->got_offset += acfg->num_trampoline_got_entries;
6201 }
6202
6203 static gboolean
6204 str_begins_with (const char *str1, const char *str2)
6205 {
6206 int len = strlen (str2);
6207 return strncmp (str1, str2, len) == 0;
6208 }
6209
6210 void*
6211 mono_aot_readonly_field_override (MonoClassField *field)
6212 {
6213 ReadOnlyValue *rdv;
6214 for (rdv = readonly_values; rdv; rdv = rdv->next) {
6215 char *p = rdv->name;
6216 int len;
6217 len = strlen (field->parent->name_space);
6218 if (strncmp (p, field->parent->name_space, len))
6219 continue;
6220 p += len;
6221 if (*p++ != '.')
6222 continue;
6223 len = strlen (field->parent->name);
6224 if (strncmp (p, field->parent->name, len))
6225 continue;
6226 p += len;
6227 if (*p++ != '.')
6228 continue;
6229 if (strcmp (p, field->name))
6230 continue;
6231 switch (rdv->type) {
6232 case MONO_TYPE_I1:
6233 return &rdv->value.i1;
6234 case MONO_TYPE_I2:
6235 return &rdv->value.i2;
6236 case MONO_TYPE_I4:
6237 return &rdv->value.i4;
6238 default:
6239 break;
6240 }
6241 }
6242 return NULL;
6243 }
6244
6245 static void
6246 add_readonly_value (MonoAotOptions *opts, const char *val)
6247 {
6248 ReadOnlyValue *rdv;
6249 const char *fval;
6250 const char *tval;
6251 /* the format of val is:
6252 * namespace.typename.fieldname=type/value
6253 * type can be i1 for uint8/int8/boolean, i2 for uint16/int16/char, i4 for uint32/int32
6254 */
6255 fval = strrchr (val, '/');
6256 if (!fval) {
6257 fprintf (stderr, "AOT : invalid format for readonly field '%s', missing /.\n", val);
6258 exit (1);
6259 }
6260 tval = strrchr (val, '=');
6261 if (!tval) {
6262 fprintf (stderr, "AOT : invalid format for readonly field '%s', missing =.\n", val);
6263 exit (1);
6264 }
6265 rdv = g_new0 (ReadOnlyValue, 1);
6266 rdv->name = g_malloc0 (tval - val + 1);
6267 memcpy (rdv->name, val, tval - val);
6268 tval++;
6269 fval++;
6270 if (strncmp (tval, "i1", 2) == 0) {
6271 rdv->value.i1 = atoi (fval);
6272 rdv->type = MONO_TYPE_I1;
6273 } else if (strncmp (tval, "i2", 2) == 0) {
6274 rdv->value.i2 = atoi (fval);
6275 rdv->type = MONO_TYPE_I2;
6276 } else if (strncmp (tval, "i4", 2) == 0) {
6277 rdv->value.i4 = atoi (fval);
6278 rdv->type = MONO_TYPE_I4;
6279 } else {
6280 fprintf (stderr, "AOT : unsupported type for readonly field '%s'.\n", tval);
6281 exit (1);
6282 }
6283 rdv->next = readonly_values;
6284 readonly_values = rdv;
6285 }
6286
6287 static void
6288 mono_aot_parse_options (const char *aot_options, MonoAotOptions *opts)
6289 {
6290 gchar **args, **ptr;
6291
6292 args = g_strsplit (aot_options ? aot_options : "", ",", -1);
6293 for (ptr = args; ptr && *ptr; ptr ++) {
6294 const char *arg = *ptr;
6295
6296 if (str_begins_with (arg, "outfile=")) {
6297 opts->outfile = g_strdup (arg + strlen ("outfile="));
6298 } else if (str_begins_with (arg, "save-temps")) {
6299 opts->save_temps = TRUE;
6300 } else if (str_begins_with (arg, "keep-temps")) {
6301 opts->save_temps = TRUE;
6302 } else if (str_begins_with (arg, "write-symbols")) {
6303 opts->write_symbols = TRUE;
6304 } else if (str_begins_with (arg, "no-write-symbols")) {
6305 opts->write_symbols = FALSE;
6306 } else if (str_begins_with (arg, "metadata-only")) {
6307 opts->metadata_only = TRUE;
6308 } else if (str_begins_with (arg, "bind-to-runtime-version")) {
6309 opts->bind_to_runtime_version = TRUE;
6310 } else if (str_begins_with (arg, "full")) {
6311 opts->full_aot = TRUE;
6312 } else if (str_begins_with (arg, "threads=")) {
6313 opts->nthreads = atoi (arg + strlen ("threads="));
6314 } else if (str_begins_with (arg, "static")) {
6315 opts->static_link = TRUE;
6316 opts->no_dlsym = TRUE;
6317 } else if (str_begins_with (arg, "asmonly")) {
6318 opts->asm_only = TRUE;
6319 } else if (str_begins_with (arg, "asmwriter")) {
6320 opts->asm_writer = TRUE;
6321 } else if (str_begins_with (arg, "nodebug")) {
6322 opts->nodebug = TRUE;
6323 } else if (str_begins_with (arg, "dwarfdebug")) {
6324 opts->dwarf_debug = TRUE;
6325 } else if (str_begins_with (arg, "nopagetrampolines")) {
6326 opts->use_trampolines_page = FALSE;
6327 } else if (str_begins_with (arg, "ntrampolines=")) {
6328 opts->ntrampolines = atoi (arg + strlen ("ntrampolines="));
6329 } else if (str_begins_with (arg, "nrgctx-trampolines=")) {
6330 opts->nrgctx_trampolines = atoi (arg + strlen ("nrgctx-trampolines="));
6331 } else if (str_begins_with (arg, "nimt-trampolines=")) {
6332 opts->nimt_trampolines = atoi (arg + strlen ("nimt-trampolines="));
6333 } else if (str_begins_with (arg, "ngsharedvt-trampolines=")) {
6334 opts->ngsharedvt_arg_trampolines = atoi (arg + strlen ("ngsharedvt-trampolines="));
6335 } else if (str_begins_with (arg, "autoreg")) {
6336 opts->autoreg = TRUE;
6337 } else if (str_begins_with (arg, "tool-prefix=")) {
6338 opts->tool_prefix = g_strdup (arg + strlen ("tool-prefix="));
6339 } else if (str_begins_with (arg, "soft-debug")) {
6340 opts->soft_debug = TRUE;
6341 } else if (str_begins_with (arg, "direct-pinvoke")) {
6342 opts->direct_pinvoke = TRUE;
6343 } else if (str_begins_with (arg, "direct-icalls")) {
6344 opts->direct_icalls = TRUE;
6345 #if defined(TARGET_ARM) || defined(TARGET_ARM64)
6346 } else if (str_begins_with (arg, "iphone-abi")) {
6347 // older full-aot users did depend on this.
6348 #endif
6349 } else if (str_begins_with (arg, "no-direct-calls")) {
6350 opts->no_direct_calls = TRUE;
6351 } else if (str_begins_with (arg, "print-skipped")) {
6352 opts->print_skipped_methods = TRUE;
6353 } else if (str_begins_with (arg, "stats")) {
6354 opts->stats = TRUE;
6355 } else if (str_begins_with (arg, "no-instances")) {
6356 opts->no_instances = TRUE;
6357 } else if (str_begins_with (arg, "log-generics")) {
6358 opts->log_generics = TRUE;
6359 } else if (str_begins_with (arg, "log-instances=")) {
6360 opts->log_instances = TRUE;
6361 opts->instances_logfile_path = g_strdup (arg + strlen ("log-instances="));
6362 } else if (str_begins_with (arg, "log-instances")) {
6363 opts->log_instances = TRUE;
6364 } else if (str_begins_with (arg, "mtriple=")) {
6365 opts->mtriple = g_strdup (arg + strlen ("mtriple="));
6366 } else if (str_begins_with (arg, "llvm-path=")) {
6367 opts->llvm_path = g_strdup (arg + strlen ("llvm-path="));
6368 } else if (str_begins_with (arg, "readonly-value=")) {
6369 add_readonly_value (opts, arg + strlen ("readonly-value="));
6370 } else if (str_begins_with (arg, "info")) {
6371 printf ("AOT target setup: %s.\n", AOT_TARGET_STR);
6372 exit (0);
6373 } else if (str_begins_with (arg, "gc-maps")) {
6374 mini_gc_enable_gc_maps_for_aot ();
6375 } else if (str_begins_with (arg, "help") || str_begins_with (arg, "?")) {
6376 printf ("Supported options for --aot:\n");
6377 printf (" outfile=\n");
6378 printf (" save-temps\n");
6379 printf (" keep-temps\n");
6380 printf (" write-symbols\n");
6381 printf (" metadata-only\n");
6382 printf (" bind-to-runtime-version\n");
6383 printf (" full\n");
6384 printf (" threads=\n");
6385 printf (" static\n");
6386 printf (" asmonly\n");
6387 printf (" asmwriter\n");
6388 printf (" nodebug\n");
6389 printf (" dwarfdebug\n");
6390 printf (" ntrampolines=\n");
6391 printf (" nrgctx-trampolines=\n");
6392 printf (" nimt-trampolines=\n");
6393 printf (" ngsharedvt-trampolines=\n");
6394 printf (" autoreg\n");
6395 printf (" tool-prefix=\n");
6396 printf (" readonly-value=\n");
6397 printf (" soft-debug\n");
6398 printf (" gc-maps\n");
6399 printf (" print-skipped\n");
6400 printf (" no-instances\n");
6401 printf (" stats\n");
6402 printf (" info\n");
6403 printf (" help/?\n");
6404 exit (0);
6405 } else {
6406 fprintf (stderr, "AOT : Unknown argument '%s'.\n", arg);
6407 exit (1);
6408 }
6409 }
6410
6411 if (opts->use_trampolines_page) {
6412 opts->ntrampolines = 0;
6413 opts->nrgctx_trampolines = 0;
6414 opts->nimt_trampolines = 0;
6415 opts->ngsharedvt_arg_trampolines = 0;
6416 }
6417 g_strfreev (args);
6418 }
6419
6420 static void
6421 add_token_info_hash (gpointer key, gpointer value, gpointer user_data)
6422 {
6423 MonoMethod *method = (MonoMethod*)key;
6424 MonoJumpInfoToken *ji = (MonoJumpInfoToken*)value;
6425 MonoJumpInfoToken *new_ji = g_new0 (MonoJumpInfoToken, 1);
6426 MonoAotCompile *acfg = user_data;
6427
6428 new_ji->image = ji->image;
6429 new_ji->token = ji->token;
6430 g_hash_table_insert (acfg->token_info_hash, method, new_ji);
6431 }
6432
6433 static gboolean
6434 can_encode_class (MonoAotCompile *acfg, MonoClass *klass)
6435 {
6436 if (klass->type_token)
6437 return TRUE;
6438 if ((klass->byval_arg.type == MONO_TYPE_VAR) || (klass->byval_arg.type == MONO_TYPE_MVAR) || (klass->byval_arg.type == MONO_TYPE_PTR))
6439 return TRUE;
6440 if (klass->rank)
6441 return can_encode_class (acfg, klass->element_class);
6442 return FALSE;
6443 }
6444
6445 static gboolean
6446 can_encode_method (MonoAotCompile *acfg, MonoMethod *method)
6447 {
6448 if (method->wrapper_type) {
6449 switch (method->wrapper_type) {
6450 case MONO_WRAPPER_NONE:
6451 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK:
6452 case MONO_WRAPPER_XDOMAIN_INVOKE:
6453 case MONO_WRAPPER_STFLD:
6454 case MONO_WRAPPER_LDFLD:
6455 case MONO_WRAPPER_LDFLDA:
6456 case MONO_WRAPPER_LDFLD_REMOTE:
6457 case MONO_WRAPPER_STFLD_REMOTE:
6458 case MONO_WRAPPER_STELEMREF:
6459 case MONO_WRAPPER_ISINST:
6460 case MONO_WRAPPER_PROXY_ISINST:
6461 case MONO_WRAPPER_ALLOC:
6462 case MONO_WRAPPER_REMOTING_INVOKE:
6463 case MONO_WRAPPER_UNKNOWN:
6464 case MONO_WRAPPER_WRITE_BARRIER:
6465 case MONO_WRAPPER_DELEGATE_INVOKE:
6466 case MONO_WRAPPER_DELEGATE_BEGIN_INVOKE:
6467 case MONO_WRAPPER_DELEGATE_END_INVOKE:
6468 case MONO_WRAPPER_SYNCHRONIZED:
6469 break;
6470 case MONO_WRAPPER_MANAGED_TO_MANAGED:
6471 case MONO_WRAPPER_CASTCLASS: {
6472 WrapperInfo *info = mono_marshal_get_wrapper_info (method);
6473
6474 if (info)
6475 return TRUE;
6476 else
6477 return FALSE;
6478 break;
6479 }
6480 default:
6481 //printf ("Skip (wrapper call): %d -> %s\n", patch_info->type, mono_method_full_name (patch_info->data.method, TRUE));
6482 return FALSE;
6483 }
6484 } else {
6485 if (!method->token) {
6486 /* The method is part of a constructed type like Int[,].Set (). */
6487 if (!g_hash_table_lookup (acfg->token_info_hash, method)) {
6488 if (method->klass->rank)
6489 return TRUE;
6490 return FALSE;
6491 }
6492 }
6493 }
6494 return TRUE;
6495 }
6496
6497 static gboolean
6498 can_encode_patch (MonoAotCompile *acfg, MonoJumpInfo *patch_info)
6499 {
6500 switch (patch_info->type) {
6501 case MONO_PATCH_INFO_METHOD:
6502 case MONO_PATCH_INFO_METHODCONST:
6503 case MONO_PATCH_INFO_METHOD_CODE_SLOT: {
6504 MonoMethod *method = patch_info->data.method;
6505
6506 return can_encode_method (acfg, method);
6507 }
6508 case MONO_PATCH_INFO_VTABLE:
6509 case MONO_PATCH_INFO_CLASS_INIT:
6510 case MONO_PATCH_INFO_CLASS:
6511 case MONO_PATCH_INFO_IID:
6512 case MONO_PATCH_INFO_ADJUSTED_IID:
6513 if (!can_encode_class (acfg, patch_info->data.klass)) {
6514 //printf ("Skip: %s\n", mono_type_full_name (&patch_info->data.klass->byval_arg));
6515 return FALSE;
6516 }
6517 break;
6518 case MONO_PATCH_INFO_DELEGATE_TRAMPOLINE: {
6519 if (!can_encode_class (acfg, patch_info->data.del_tramp->klass)) {
6520 //printf ("Skip: %s\n", mono_type_full_name (&patch_info->data.klass->byval_arg));
6521 return FALSE;
6522 }
6523 break;
6524 }
6525 case MONO_PATCH_INFO_RGCTX_FETCH: {
6526 MonoJumpInfoRgctxEntry *entry = patch_info->data.rgctx_entry;
6527
6528 if (!can_encode_method (acfg, entry->method))
6529 return FALSE;
6530 if (!can_encode_patch (acfg, entry->data))
6531 return FALSE;
6532 break;
6533 }
6534 default:
6535 break;
6536 }
6537
6538 return TRUE;
6539 }
6540
6541 /*
6542 * compile_method:
6543 *
6544 * AOT compile a given method.
6545 * This function might be called by multiple threads, so it must be thread-safe.
6546 */
6547 static void
6548 compile_method (MonoAotCompile *acfg, MonoMethod *method)
6549 {
6550 MonoCompile *cfg;
6551 MonoJumpInfo *patch_info;
6552 gboolean skip;
6553 int index, depth;
6554 MonoMethod *wrapped;
6555
6556 if (acfg->aot_opts.metadata_only)
6557 return;
6558
6559 mono_acfg_lock (acfg);
6560 index = get_method_index (acfg, method);
6561 mono_acfg_unlock (acfg);
6562
6563 /* fixme: maybe we can also precompile wrapper methods */
6564 if ((method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
6565 (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
6566 (method->flags & METHOD_ATTRIBUTE_ABSTRACT)) {
6567 //printf ("Skip (impossible): %s\n", mono_method_full_name (method, TRUE));
6568 return;
6569 }
6570
6571 if (method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL)
6572 return;
6573
6574 wrapped = mono_marshal_method_from_wrapper (method);
6575 if (wrapped && (wrapped->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && wrapped->is_generic)
6576 // FIXME: The wrapper should be generic too, but it is not
6577 return;
6578
6579 if (method->wrapper_type == MONO_WRAPPER_COMINTEROP)
6580 return;
6581
6582 InterlockedIncrement (&acfg->stats.mcount);
6583
6584 #if 0
6585 if (method->is_generic || method->klass->generic_container) {
6586 InterlockedIncrement (&acfg->stats.genericcount);
6587 return;
6588 }
6589 #endif
6590
6591 //acfg->aot_opts.print_skipped_methods = TRUE;
6592
6593 /*
6594 * Since these methods are the only ones which are compiled with
6595 * AOT support, and they are not used by runtime startup/shutdown code,
6596 * the runtime will not see AOT methods during AOT compilation,so it
6597 * does not need to support them by creating a fake GOT etc.
6598 */
6599 cfg = mini_method_compile (method, acfg->opts, mono_get_root_domain (), acfg->aot_opts.full_aot ? (JIT_FLAG_AOT|JIT_FLAG_FULL_AOT) : (JIT_FLAG_AOT), 0);
6600 mono_loader_clear_error ();
6601
6602 if (cfg->exception_type == MONO_EXCEPTION_GENERIC_SHARING_FAILED) {
6603 if (acfg->aot_opts.print_skipped_methods)
6604 printf ("Skip (gshared failure): %s (%s)\n", mono_method_full_name (method, TRUE), cfg->exception_message);
6605 InterlockedIncrement (&acfg->stats.genericcount);
6606 return;
6607 }
6608 if (cfg->exception_type != MONO_EXCEPTION_NONE) {
6609 if (acfg->aot_opts.print_skipped_methods)
6610 printf ("Skip (JIT failure): %s\n", mono_method_full_name (method, TRUE));
6611 /* Let the exception happen at runtime */
6612 return;
6613 }
6614
6615 if (cfg->disable_aot) {
6616 if (acfg->aot_opts.print_skipped_methods)
6617 printf ("Skip (disabled): %s\n", mono_method_full_name (method, TRUE));
6618 InterlockedIncrement (&acfg->stats.ocount);
6619 mono_destroy_compile (cfg);
6620 return;
6621 }
6622 cfg->method_index = index;
6623
6624 /* Nullify patches which need no aot processing */
6625 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
6626 switch (patch_info->type) {
6627 case MONO_PATCH_INFO_LABEL:
6628 case MONO_PATCH_INFO_BB:
6629 patch_info->type = MONO_PATCH_INFO_NONE;
6630 break;
6631 default:
6632 break;
6633 }
6634 }
6635
6636 /* Collect method->token associations from the cfg */
6637 mono_acfg_lock (acfg);
6638 g_hash_table_foreach (cfg->token_info_hash, add_token_info_hash, acfg);
6639 mono_acfg_unlock (acfg);
6640
6641 /*
6642 * Check for absolute addresses.
6643 */
6644 skip = FALSE;
6645 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
6646 switch (patch_info->type) {
6647 case MONO_PATCH_INFO_ABS:
6648 /* unable to handle this */
6649 skip = TRUE;
6650 break;
6651 default:
6652 break;
6653 }
6654 }
6655
6656 if (skip) {
6657 if (acfg->aot_opts.print_skipped_methods)
6658 printf ("Skip (abs call): %s\n", mono_method_full_name (method, TRUE));
6659 InterlockedIncrement (&acfg->stats.abscount);
6660 mono_destroy_compile (cfg);
6661 return;
6662 }
6663
6664 /* Lock for the rest of the code */
6665 mono_acfg_lock (acfg);
6666
6667 /*
6668 * Check for methods/klasses we can't encode.
6669 */
6670 skip = FALSE;
6671 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
6672 if (!can_encode_patch (acfg, patch_info))
6673 skip = TRUE;
6674 }
6675
6676 if (skip) {
6677 if (acfg->aot_opts.print_skipped_methods)
6678 printf ("Skip (patches): %s\n", mono_method_full_name (method, TRUE));
6679 acfg->stats.ocount++;
6680 mono_destroy_compile (cfg);
6681 mono_acfg_unlock (acfg);
6682 return;
6683 }
6684
6685 if (method->is_inflated && acfg->aot_opts.log_instances) {
6686 if (acfg->instances_logfile)
6687 fprintf (acfg->instances_logfile, "%s ### %d\n", mono_method_full_name (method, TRUE), cfg->code_size);
6688 else
6689 printf ("%s ### %d\n", mono_method_full_name (method, TRUE), cfg->code_size);
6690 }
6691
6692 /* Adds generic instances referenced by this method */
6693 /*
6694 * The depth is used to avoid infinite loops when generic virtual recursion is
6695 * encountered.
6696 */
6697 depth = GPOINTER_TO_UINT (g_hash_table_lookup (acfg->method_depth, method));
6698 if (!acfg->aot_opts.no_instances && depth < 32) {
6699 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
6700 switch (patch_info->type) {
6701 case MONO_PATCH_INFO_METHOD: {
6702 MonoMethod *m = patch_info->data.method;
6703 if (m->is_inflated) {
6704 if (!(mono_class_generic_sharing_enabled (m->klass) &&
6705 mono_method_is_generic_sharable_full (m, FALSE, FALSE, FALSE)) &&
6706 !method_has_type_vars (m)) {
6707 if (m->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) {
6708 if (acfg->aot_opts.full_aot)
6709 add_extra_method_with_depth (acfg, mono_marshal_get_native_wrapper (m, TRUE, TRUE), depth + 1);
6710 } else {
6711 add_extra_method_with_depth (acfg, m, depth + 1);
6712 add_types_from_method_header (acfg, m);
6713 }
6714 }
6715 add_generic_class_with_depth (acfg, m->klass, depth + 5, "method");
6716 }
6717 if (m->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED && !strcmp (m->name, "ElementAddr"))
6718 add_extra_method_with_depth (acfg, m, depth + 1);
6719 break;
6720 }
6721 case MONO_PATCH_INFO_VTABLE: {
6722 MonoClass *klass = patch_info->data.klass;
6723
6724 if (klass->generic_class && !mini_class_is_generic_sharable (klass))
6725 add_generic_class_with_depth (acfg, klass, depth + 5, "vtable");
6726 break;
6727 }
6728 case MONO_PATCH_INFO_SFLDA: {
6729 MonoClass *klass = patch_info->data.field->parent;
6730
6731 /* The .cctor needs to run at runtime. */
6732 if (klass->generic_class && !mono_generic_context_is_sharable (&klass->generic_class->context, FALSE) && mono_class_get_cctor (klass))
6733 add_extra_method_with_depth (acfg, mono_class_get_cctor (klass), depth + 1);
6734 break;
6735 }
6736 default:
6737 break;
6738 }
6739 }
6740 }
6741
6742 /* Determine whenever the method has GOT slots */
6743 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
6744 switch (patch_info->type) {
6745 case MONO_PATCH_INFO_GOT_OFFSET:
6746 case MONO_PATCH_INFO_NONE:
6747 case MONO_PATCH_INFO_GC_CARD_TABLE_ADDR:
6748 break;
6749 case MONO_PATCH_INFO_IMAGE:
6750 /* The assembly is stored in GOT slot 0 */
6751 if (patch_info->data.image != acfg->image)
6752 cfg->has_got_slots = TRUE;
6753 break;
6754 default:
6755 if (!is_plt_patch (patch_info))
6756 cfg->has_got_slots = TRUE;
6757 break;
6758 }
6759 }
6760
6761 if (!cfg->has_got_slots)
6762 InterlockedIncrement (&acfg->stats.methods_without_got_slots);
6763
6764 /*
6765 * FIXME: Instead of this mess, allocate the patches from the aot mempool.
6766 */
6767 /* Make a copy of the patch info which is in the mempool */
6768 {
6769 MonoJumpInfo *patches = NULL, *patches_end = NULL;
6770
6771 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
6772 MonoJumpInfo *new_patch_info = mono_patch_info_dup_mp (acfg->mempool, patch_info);
6773
6774 if (!patches)
6775 patches = new_patch_info;
6776 else
6777 patches_end->next = new_patch_info;
6778 patches_end = new_patch_info;
6779 }
6780 cfg->patch_info = patches;
6781 }
6782 /* Make a copy of the unwind info */
6783 {
6784 GSList *l, *unwind_ops;
6785 MonoUnwindOp *op;
6786
6787 unwind_ops = NULL;
6788 for (l = cfg->unwind_ops; l; l = l->next) {
6789 op = mono_mempool_alloc (acfg->mempool, sizeof (MonoUnwindOp));
6790 memcpy (op, l->data, sizeof (MonoUnwindOp));
6791 unwind_ops = g_slist_prepend_mempool (acfg->mempool, unwind_ops, op);
6792 }
6793 cfg->unwind_ops = g_slist_reverse (unwind_ops);
6794 }
6795 /* Make a copy of the argument/local info */
6796 {
6797 MonoInst **args, **locals;
6798 MonoMethodSignature *sig;
6799 MonoMethodHeader *header;
6800 int i;
6801
6802 sig = mono_method_signature (method);
6803 args = mono_mempool_alloc (acfg->mempool, sizeof (MonoInst*) * (sig->param_count + sig->hasthis));
6804 for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
6805 args [i] = mono_mempool_alloc (acfg->mempool, sizeof (MonoInst));
6806 memcpy (args [i], cfg->args [i], sizeof (MonoInst));
6807 }
6808 cfg->args = args;
6809
6810 header = mono_method_get_header (method);
6811 locals = mono_mempool_alloc (acfg->mempool, sizeof (MonoInst*) * header->num_locals);
6812 for (i = 0; i < header->num_locals; ++i) {
6813 locals [i] = mono_mempool_alloc (acfg->mempool, sizeof (MonoInst));
6814 memcpy (locals [i], cfg->locals [i], sizeof (MonoInst));
6815 }
6816 cfg->locals = locals;
6817 }
6818
6819 /* Free some fields used by cfg to conserve memory */
6820 mono_mempool_destroy (cfg->mempool);
6821 cfg->mempool = NULL;
6822 g_free (cfg->varinfo);
6823 cfg->varinfo = NULL;
6824 g_free (cfg->vars);
6825 cfg->vars = NULL;
6826 if (cfg->rs) {
6827 mono_regstate_free (cfg->rs);
6828 cfg->rs = NULL;
6829 }
6830
6831 //printf ("Compile: %s\n", mono_method_full_name (method, TRUE));
6832
6833 while (index >= acfg->cfgs_size) {
6834 MonoCompile **new_cfgs;
6835 int new_size;
6836
6837 new_size = acfg->cfgs_size * 2;
6838 new_cfgs = g_new0 (MonoCompile*, new_size);
6839 memcpy (new_cfgs, acfg->cfgs, sizeof (MonoCompile*) * acfg->cfgs_size);
6840 g_free (acfg->cfgs);
6841 acfg->cfgs = new_cfgs;
6842 acfg->cfgs_size = new_size;
6843 }
6844 acfg->cfgs [index] = cfg;
6845
6846 g_hash_table_insert (acfg->method_to_cfg, cfg->orig_method, cfg);
6847
6848 /*
6849 if (cfg->orig_method->wrapper_type)
6850 g_ptr_array_add (acfg->extra_methods, cfg->orig_method);
6851 */
6852
6853 mono_acfg_unlock (acfg);
6854
6855 InterlockedIncrement (&acfg->stats.ccount);
6856 }
6857
6858 static void
6859 compile_thread_main (gpointer *user_data)
6860 {
6861 MonoDomain *domain = user_data [0];
6862 MonoAotCompile *acfg = user_data [1];
6863 GPtrArray *methods = user_data [2];
6864 int i;
6865
6866 mono_thread_attach (domain);
6867
6868 for (i = 0; i < methods->len; ++i)
6869 compile_method (acfg, g_ptr_array_index (methods, i));
6870 }
6871
6872 static void
6873 load_profile_files (MonoAotCompile *acfg)
6874 {
6875 FILE *infile;
6876 char *tmp;
6877 int file_index, res, method_index, i;
6878 char ver [256];
6879 guint32 token;
6880 GList *unordered, *l;
6881 gboolean found;
6882
6883 file_index = 0;
6884 while (TRUE) {
6885 tmp = g_strdup_printf ("%s/.mono/aot-profile-data/%s-%d", g_get_home_dir (), acfg->image->assembly_name, file_index);
6886
6887 if (!g_file_test (tmp, G_FILE_TEST_IS_REGULAR)) {
6888 g_free (tmp);
6889 break;
6890 }
6891
6892 infile = fopen (tmp, "r");
6893 g_assert (infile);
6894
6895 printf ("Using profile data file '%s'\n", tmp);
6896 g_free (tmp);
6897
6898 file_index ++;
6899
6900 res = fscanf (infile, "%32s\n", ver);
6901 if ((res != 1) || strcmp (ver, "#VER:2") != 0) {
6902 printf ("Profile file has wrong version or invalid.\n");
6903 fclose (infile);
6904 continue;
6905 }
6906
6907 while (TRUE) {
6908 char name [1024];
6909 MonoMethodDesc *desc;
6910 MonoMethod *method;
6911
6912 if (fgets (name, 1023, infile) == NULL)
6913 break;
6914
6915 /* Kill the newline */
6916 if (strlen (name) > 0)
6917 name [strlen (name) - 1] = '\0';
6918
6919 desc = mono_method_desc_new (name, TRUE);
6920
6921 method = mono_method_desc_search_in_image (desc, acfg->image);
6922
6923 if (method && mono_method_get_token (method)) {
6924 token = mono_method_get_token (method);
6925 method_index = mono_metadata_token_index (token) - 1;
6926
6927 found = FALSE;
6928 for (i = 0; i < acfg->method_order->len; ++i) {
6929 if (g_ptr_array_index (acfg->method_order, i) == GUINT_TO_POINTER (method_index)) {
6930 found = TRUE;
6931 break;
6932 }
6933 }
6934 if (!found)
6935 g_ptr_array_add (acfg->method_order, GUINT_TO_POINTER (method_index));
6936 } else {
6937 //printf ("No method found matching '%s'.\n", name);
6938 }
6939 }
6940 fclose (infile);
6941 }
6942
6943 /* Add missing methods */
6944 unordered = NULL;
6945 for (method_index = 0; method_index < acfg->image->tables [MONO_TABLE_METHOD].rows; ++method_index) {
6946 found = FALSE;
6947 for (i = 0; i < acfg->method_order->len; ++i) {
6948 if (g_ptr_array_index (acfg->method_order, i) == GUINT_TO_POINTER (method_index)) {
6949 found = TRUE;
6950 break;
6951 }
6952 }
6953 if (!found)
6954 unordered = g_list_prepend (unordered, GUINT_TO_POINTER (method_index));
6955 }
6956 unordered = g_list_reverse (unordered);
6957 for (l = unordered; l; l = l->next)
6958 g_ptr_array_add (acfg->method_order, l->data);
6959 }
6960
6961 /* Used by the LLVM backend */
6962 guint32
6963 mono_aot_get_got_offset (MonoJumpInfo *ji)
6964 {
6965 return get_got_offset (llvm_acfg, ji);
6966 }
6967
6968 char*
6969 mono_aot_get_method_name (MonoCompile *cfg)
6970 {
6971 if (llvm_acfg->aot_opts.static_link)
6972 /* Include the assembly name too to avoid duplicate symbol errors */
6973 return g_strdup_printf ("%s_%s", llvm_acfg->assembly_name_sym, get_debug_sym (cfg->orig_method, "", llvm_acfg->method_label_hash));
6974 else
6975 return get_debug_sym (cfg->orig_method, "", llvm_acfg->method_label_hash);
6976 }
6977
6978 char*
6979 mono_aot_get_plt_symbol (MonoJumpInfoType type, gconstpointer data)
6980 {
6981 MonoJumpInfo *ji = mono_mempool_alloc (llvm_acfg->mempool, sizeof (MonoJumpInfo));
6982 MonoPltEntry *plt_entry;
6983
6984 ji->type = type;
6985 ji->data.target = data;
6986
6987 if (!can_encode_patch (llvm_acfg, ji))
6988 return NULL;
6989
6990 plt_entry = get_plt_entry (llvm_acfg, ji);
6991 plt_entry->llvm_used = TRUE;
6992
6993 #if defined(TARGET_MACH)
6994 return g_strdup_printf (plt_entry->llvm_symbol + strlen (llvm_acfg->llvm_label_prefix));
6995 #else
6996 return g_strdup_printf (plt_entry->llvm_symbol);
6997 #endif
6998 }
6999
7000 int
7001 mono_aot_get_method_index (MonoMethod *method)
7002 {
7003 g_assert (llvm_acfg);
7004 return get_method_index (llvm_acfg, method);
7005 }
7006
7007 MonoJumpInfo*
7008 mono_aot_patch_info_dup (MonoJumpInfo* ji)
7009 {
7010 MonoJumpInfo *res;
7011
7012 mono_acfg_lock (llvm_acfg);
7013 res = mono_patch_info_dup_mp (llvm_acfg->mempool, ji);
7014 mono_acfg_unlock (llvm_acfg);
7015
7016 return res;
7017 }
7018
7019 #ifdef ENABLE_LLVM
7020
7021 /*
7022 * emit_llvm_file:
7023 *
7024 * Emit the LLVM code into an LLVM bytecode file, and compile it using the LLVM
7025 * tools.
7026 */
7027 static void
7028 emit_llvm_file (MonoAotCompile *acfg)
7029 {
7030 char *command, *opts, *tempbc;
7031 int i;
7032 MonoJumpInfo *patch_info;
7033
7034 /*
7035 * When using LLVM, we let llvm emit the got since the LLVM IL needs to refer
7036 * to it.
7037 */
7038
7039 /* Compute the final size of the got */
7040 for (i = 0; i < acfg->nmethods; ++i) {
7041 if (acfg->cfgs [i]) {
7042 for (patch_info = acfg->cfgs [i]->patch_info; patch_info; patch_info = patch_info->next) {
7043 if (patch_info->type != MONO_PATCH_INFO_NONE) {
7044 if (!is_plt_patch (patch_info))
7045 get_got_offset (acfg, patch_info);
7046 else
7047 get_plt_entry (acfg, patch_info);
7048 }
7049 }
7050 }
7051 }
7052
7053 acfg->final_got_size = acfg->got_offset + acfg->plt_offset;
7054
7055 if (acfg->aot_opts.full_aot) {
7056 int ntype;
7057
7058 /*
7059 * Need to add the got entries used by the trampolines.
7060 * This is only a conservative approximation.
7061 */
7062 if (strcmp (acfg->image->assembly->aname.name, "mscorlib") == 0) {
7063 /* For the generic + rgctx trampolines */
7064 acfg->final_got_size += 400;
7065 /* For the specific trampolines */
7066 for (ntype = 0; ntype < MONO_AOT_TRAMP_NUM; ++ntype)
7067 acfg->final_got_size += acfg->num_trampolines [ntype] * 2;
7068 }
7069 }
7070
7071
7072 tempbc = g_strdup_printf ("%s.bc", acfg->tmpbasename);
7073 mono_llvm_emit_aot_module (tempbc, acfg->final_got_size);
7074 g_free (tempbc);
7075
7076 /*
7077 * FIXME: Experiment with adding optimizations, the -std-compile-opts set takes
7078 * a lot of time, and doesn't seem to save much space.
7079 * The following optimizations cannot be enabled:
7080 * - 'tailcallelim'
7081 * - 'jump-threading' changes our blockaddress references to int constants.
7082 * - 'basiccg' fails because it contains:
7083 * if (CS && !isa<IntrinsicInst>(II)) {
7084 * and isa<IntrinsicInst> is false for invokes to intrinsics (iltests.exe).
7085 * - 'prune-eh' and 'functionattrs' depend on 'basiccg'.
7086 * The opt list below was produced by taking the output of:
7087 * llvm-as < /dev/null | opt -O2 -disable-output -debug-pass=Arguments
7088 * then removing tailcallelim + the global opts.
7089 * strip-dead-prototypes deletes unused intrinsics definitions.
7090 */
7091 opts = g_strdup ("-instcombine -simplifycfg");
7092 //opts = g_strdup ("-simplifycfg -domtree -domfrontier -scalarrepl -instcombine -simplifycfg -domtree -domfrontier -scalarrepl -simplify-libcalls -instcombine -simplifycfg -instcombine -simplifycfg -reassociate -domtree -loops -loop-simplify -domfrontier -loop-simplify -lcssa -loop-rotate -licm -lcssa -loop-unswitch -instcombine -scalar-evolution -loop-simplify -lcssa -iv-users -indvars -loop-deletion -loop-simplify -lcssa -loop-unroll -instcombine -memdep -gvn -memdep -memcpyopt -sccp -instcombine -domtree -memdep -dse -adce -simplifycfg -domtree -verify");
7093 /* The dse pass is disabled because of #13734 and #17616 */
7094 /*
7095 * The dse bug is in DeadStoreElimination.cpp:isOverwrite ():
7096 * // If we have no DataLayout information around, then the size of the store
7097 * // is inferrable from the pointee type. If they are the same type, then
7098 * // we know that the store is safe.
7099 * if (AA.getDataLayout() == 0 &&
7100 * Later.Ptr->getType() == Earlier.Ptr->getType()) {
7101 * return OverwriteComplete;
7102 * Here, if 'Earlier' refers to a memset, and Later has no size info, it mistakenly thinks the memset is redundant.
7103 */
7104 opts = g_strdup ("-targetlibinfo -no-aa -basicaa -notti -instcombine -simplifycfg -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");
7105 #if 1
7106 command = g_strdup_printf ("%sopt -f %s -o \"%s.opt.bc\" \"%s.bc\"", acfg->aot_opts.llvm_path, opts, acfg->tmpbasename, acfg->tmpbasename);
7107 printf ("Executing opt: %s\n", command);
7108 if (system (command) != 0) {
7109 exit (1);
7110 }
7111 #endif
7112 g_free (opts);
7113
7114 if (!acfg->llc_args)
7115 acfg->llc_args = g_string_new ("");
7116
7117 /* Verbose asm slows down llc greatly */
7118 g_string_append (acfg->llc_args, " -asm-verbose=false");
7119
7120 if (acfg->aot_opts.mtriple)
7121 g_string_append_printf (acfg->llc_args, " -mtriple=%s", acfg->aot_opts.mtriple);
7122
7123 #if defined(TARGET_MACH) && defined(TARGET_ARM)
7124 /* ios requires PIC code now */
7125 g_string_append_printf (acfg->llc_args, " -relocation-model=pic");
7126 #else
7127 if (llvm_acfg->aot_opts.static_link)
7128 g_string_append_printf (acfg->llc_args, " -relocation-model=static");
7129 else
7130 g_string_append_printf (acfg->llc_args, " -relocation-model=pic");
7131 #endif
7132 unlink (acfg->tmpfname);
7133
7134 command = g_strdup_printf ("%sllc %s -disable-gnu-eh-frame -enable-mono-eh-frame -o \"%s\" \"%s.opt.bc\"", acfg->aot_opts.llvm_path, acfg->llc_args->str, acfg->tmpfname, acfg->tmpbasename);
7135
7136 printf ("Executing llc: %s\n", command);
7137
7138 if (system (command) != 0) {
7139 exit (1);
7140 }
7141 }
7142 #endif
7143
7144 static void
7145 emit_code (MonoAotCompile *acfg)
7146 {
7147 int oindex, i, prev_index;
7148 char symbol [256];
7149
7150 #if defined(TARGET_POWERPC64)
7151 sprintf (symbol, ".Lgot_addr");
7152 emit_section_change (acfg, ".text", 0);
7153 emit_alignment (acfg, 8);
7154 emit_label (acfg, symbol);
7155 emit_pointer (acfg, acfg->got_symbol);
7156 #endif
7157
7158 /*
7159 * This global symbol is used to compute the address of each method using the
7160 * code_offsets array. It is also used to compute the memory ranges occupied by
7161 * AOT code, so it must be equal to the address of the first emitted method.
7162 */
7163 emit_section_change (acfg, ".text", 0);
7164 emit_alignment (acfg, 8);
7165 if (acfg->llvm) {
7166 for (i = 0; i < acfg->nmethods; ++i) {
7167 if (acfg->cfgs [i] && acfg->cfgs [i]->compile_llvm) {
7168 acfg->methods_symbol = g_strdup (acfg->cfgs [i]->asm_symbol);
7169 break;
7170 }
7171 }
7172 }
7173 if (!acfg->methods_symbol) {
7174 sprintf (symbol, "methods");
7175 emit_label (acfg, symbol);
7176 acfg->methods_symbol = g_strdup (symbol);
7177 }
7178
7179 /*
7180 * Emit some padding so the local symbol for the first method doesn't have the
7181 * same address as 'methods'.
7182 */
7183 #if defined(__default_codegen__)
7184 emit_zero_bytes (acfg, 16);
7185 #elif defined(__native_client_codegen__)
7186 {
7187 const int kPaddingSize = 16;
7188 guint8 pad_buffer[kPaddingSize];
7189 mono_arch_nacl_pad (pad_buffer, kPaddingSize);
7190 emit_bytes (acfg, pad_buffer, kPaddingSize);
7191 }
7192 #endif
7193
7194 for (oindex = 0; oindex < acfg->method_order->len; ++oindex) {
7195 MonoCompile *cfg;
7196 MonoMethod *method;
7197
7198 i = GPOINTER_TO_UINT (g_ptr_array_index (acfg->method_order, oindex));
7199
7200 cfg = acfg->cfgs [i];
7201
7202 if (!cfg)
7203 continue;
7204
7205 method = cfg->orig_method;
7206
7207 /* Emit unbox trampoline */
7208 if (acfg->aot_opts.full_aot && cfg->orig_method->klass->valuetype) {
7209 sprintf (symbol, "ut_%d", get_method_index (acfg, method));
7210
7211 emit_section_change (acfg, ".text", 0);
7212 #ifdef __native_client_codegen__
7213 emit_alignment (acfg, AOT_FUNC_ALIGNMENT);
7214 #endif
7215
7216 if (acfg->thumb_mixed && cfg->compile_llvm) {
7217 emit_set_thumb_mode (acfg);
7218 fprintf (acfg->fp, "\n.thumb_func\n");
7219 }
7220
7221 emit_label (acfg, symbol);
7222
7223 arch_emit_unbox_trampoline (acfg, cfg, cfg->orig_method, cfg->asm_symbol);
7224
7225 if (acfg->thumb_mixed && cfg->compile_llvm) {
7226 emit_set_arm_mode (acfg);
7227 }
7228 }
7229
7230 if (cfg->compile_llvm)
7231 acfg->stats.llvm_count ++;
7232 else
7233 emit_method_code (acfg, cfg);
7234 }
7235
7236 sprintf (symbol, "methods_end");
7237 emit_section_change (acfg, ".text", 0);
7238 emit_alignment (acfg, 8);
7239 emit_label (acfg, symbol);
7240 /* To distinguish it from the next symbol */
7241 emit_int32 (acfg, 0);
7242
7243 /*
7244 * Add .no_dead_strip directives for all LLVM methods to prevent the OSX linker
7245 * from optimizing them away, since it doesn't see that code_offsets references them.
7246 * JITted methods don't need this since they are referenced using assembler local
7247 * symbols.
7248 * FIXME: This is why write-symbols doesn't work on OSX ?
7249 */
7250 if (acfg->llvm && acfg->need_no_dead_strip) {
7251 fprintf (acfg->fp, "\n");
7252 for (i = 0; i < acfg->nmethods; ++i) {
7253 if (acfg->cfgs [i] && acfg->cfgs [i]->compile_llvm)
7254 fprintf (acfg->fp, ".no_dead_strip %s\n", acfg->cfgs [i]->asm_symbol);
7255 }
7256 }
7257
7258 if (acfg->direct_method_addresses) {
7259 acfg->flags |= MONO_AOT_FILE_FLAG_DIRECT_METHOD_ADDRESSES;
7260
7261 /*
7262 * To work around linker issues, we emit a table of branches, and disassemble them at runtime.
7263 * This is PIE code, and the linker can update it if needed.
7264 */
7265 sprintf (symbol, "method_addresses");
7266 emit_section_change (acfg, ".text", 1);
7267 emit_alignment (acfg, 8);
7268 emit_label (acfg, symbol);
7269 emit_local_symbol (acfg, symbol, "method_addresses_end", TRUE);
7270 emit_unset_mode (acfg);
7271 if (acfg->need_no_dead_strip)
7272 fprintf (acfg->fp, " .no_dead_strip %s\n", symbol);
7273
7274 for (i = 0; i < acfg->nmethods; ++i) {
7275 #ifdef MONO_ARCH_AOT_SUPPORTED
7276 int call_size;
7277
7278 if (acfg->cfgs [i])
7279 arch_emit_direct_call (acfg, acfg->cfgs [i]->asm_symbol, FALSE, acfg->thumb_mixed && acfg->cfgs [i]->compile_llvm, NULL, &call_size);
7280 else
7281 arch_emit_direct_call (acfg, "method_addresses", FALSE, FALSE, NULL, &call_size);
7282 #endif
7283 }
7284
7285 sprintf (symbol, "method_addresses_end");
7286 emit_label (acfg, symbol);
7287
7288 /* Empty */
7289 sprintf (symbol, "code_offsets");
7290 emit_section_change (acfg, RODATA_SECT, 1);
7291 emit_alignment (acfg, 8);
7292 emit_label (acfg, symbol);
7293 emit_int32 (acfg, 0);
7294 } else {
7295 sprintf (symbol, "code_offsets");
7296 emit_section_change (acfg, RODATA_SECT, 1);
7297 emit_alignment (acfg, 8);
7298 emit_label (acfg, symbol);
7299
7300 acfg->stats.offsets_size += acfg->nmethods * 4;
7301
7302 for (i = 0; i < acfg->nmethods; ++i) {
7303 if (acfg->cfgs [i]) {
7304 emit_symbol_diff (acfg, acfg->cfgs [i]->asm_symbol, acfg->methods_symbol, 0);
7305 } else {
7306 emit_int32 (acfg, 0xffffffff);
7307 }
7308 }
7309 }
7310 emit_line (acfg);
7311
7312 /* Emit a sorted table mapping methods to their unbox trampolines */
7313 sprintf (symbol, "unbox_trampolines");
7314 if (acfg->direct_method_addresses)
7315 emit_section_change (acfg, ".text", 0);
7316 else
7317 emit_section_change (acfg, RODATA_SECT, 0);
7318 emit_alignment (acfg, 8);
7319 emit_label (acfg, symbol);
7320
7321 prev_index = -1;
7322 for (i = 0; i < acfg->nmethods; ++i) {
7323 MonoCompile *cfg;
7324 MonoMethod *method;
7325 int index;
7326
7327 cfg = acfg->cfgs [i];
7328 if (!cfg)
7329 continue;
7330
7331 method = cfg->orig_method;
7332
7333 if (acfg->aot_opts.full_aot && cfg->orig_method->klass->valuetype) {
7334 #ifdef MONO_ARCH_AOT_SUPPORTED
7335 int call_size;
7336 #endif
7337
7338 index = get_method_index (acfg, method);
7339 sprintf (symbol, "ut_%d", index);
7340
7341 emit_int32 (acfg, index);
7342 if (acfg->direct_method_addresses) {
7343 #ifdef MONO_ARCH_AOT_SUPPORTED
7344 arch_emit_direct_call (acfg, symbol, FALSE, acfg->thumb_mixed && cfg->compile_llvm, NULL, &call_size);
7345 #endif
7346 } else {
7347 emit_symbol_diff (acfg, symbol, acfg->methods_symbol, 0);
7348 }
7349 /* Make sure the table is sorted by index */
7350 g_assert (index > prev_index);
7351 prev_index = index;
7352 }
7353 }
7354 sprintf (symbol, "unbox_trampolines_end");
7355 emit_label (acfg, symbol);
7356 emit_int32 (acfg, 0);
7357 }
7358
7359 static void
7360 emit_info (MonoAotCompile *acfg)
7361 {
7362 int oindex, i;
7363 char symbol [256];
7364 gint32 *offsets;
7365
7366 offsets = g_new0 (gint32, acfg->nmethods);
7367
7368 for (oindex = 0; oindex < acfg->method_order->len; ++oindex) {
7369 i = GPOINTER_TO_UINT (g_ptr_array_index (acfg->method_order, oindex));
7370
7371 if (acfg->cfgs [i]) {
7372 emit_method_info (acfg, acfg->cfgs [i]);
7373 offsets [i] = acfg->cfgs [i]->method_info_offset;
7374 } else {
7375 offsets [i] = 0;
7376 }
7377 }
7378
7379 sprintf (symbol, "method_info_offsets");
7380 emit_section_change (acfg, RODATA_SECT, 1);
7381 emit_alignment (acfg, 8);
7382 emit_label (acfg, symbol);
7383
7384 acfg->stats.offsets_size += emit_offset_table (acfg, acfg->nmethods, 10, offsets);
7385
7386 g_free (offsets);
7387 }
7388
7389 #endif /* #if !defined(DISABLE_AOT) && !defined(DISABLE_JIT) */
7390
7391 #define rot(x,k) (((x)<<(k)) | ((x)>>(32-(k))))
7392 #define mix(a,b,c) { \
7393 a -= c; a ^= rot(c, 4); c += b; \
7394 b -= a; b ^= rot(a, 6); a += c; \
7395 c -= b; c ^= rot(b, 8); b += a; \
7396 a -= c; a ^= rot(c,16); c += b; \
7397 b -= a; b ^= rot(a,19); a += c; \
7398 c -= b; c ^= rot(b, 4); b += a; \
7399 }
7400 #define final(a,b,c) { \
7401 c ^= b; c -= rot(b,14); \
7402 a ^= c; a -= rot(c,11); \
7403 b ^= a; b -= rot(a,25); \
7404 c ^= b; c -= rot(b,16); \
7405 a ^= c; a -= rot(c,4); \
7406 b ^= a; b -= rot(a,14); \
7407 c ^= b; c -= rot(b,24); \
7408 }
7409
7410 static guint
7411 mono_aot_type_hash (MonoType *t1)
7412 {
7413 guint hash = t1->type;
7414
7415 hash |= t1->byref << 6; /* do not collide with t1->type values */
7416 switch (t1->type) {
7417 case MONO_TYPE_VALUETYPE:
7418 case MONO_TYPE_CLASS:
7419 case MONO_TYPE_SZARRAY:
7420 /* check if the distribution is good enough */
7421 return ((hash << 5) - hash) ^ mono_metadata_str_hash (t1->data.klass->name);
7422 case MONO_TYPE_PTR:
7423 return ((hash << 5) - hash) ^ mono_metadata_type_hash (t1->data.type);
7424 case MONO_TYPE_ARRAY:
7425 return ((hash << 5) - hash) ^ mono_metadata_type_hash (&t1->data.array->eklass->byval_arg);
7426 case MONO_TYPE_GENERICINST:
7427 return ((hash << 5) - hash) ^ 0;
7428 default:
7429 return hash;
7430 }
7431 }
7432
7433 /*
7434 * mono_aot_method_hash:
7435 *
7436 * Return a hash code for methods which only depends on metadata.
7437 */
7438 guint32
7439 mono_aot_method_hash (MonoMethod *method)
7440 {
7441 MonoMethodSignature *sig;
7442 MonoClass *klass;
7443 int i, hindex;
7444 int hashes_count;
7445 guint32 *hashes_start, *hashes;
7446 guint32 a, b, c;
7447 MonoGenericInst *ginst = NULL;
7448
7449 /* Similar to the hash in mono_method_get_imt_slot () */
7450
7451 sig = mono_method_signature (method);
7452
7453 if (method->is_inflated)
7454 ginst = ((MonoMethodInflated*)method)->context.method_inst;
7455
7456 hashes_count = sig->param_count + 5 + (ginst ? ginst->type_argc : 0);
7457 hashes_start = g_malloc0 (hashes_count * sizeof (guint32));
7458 hashes = hashes_start;
7459
7460 /* Some wrappers are assigned to random classes */
7461 if (!method->wrapper_type || method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)
7462 klass = method->klass;
7463 else
7464 klass = mono_defaults.object_class;
7465
7466 if (!method->wrapper_type) {
7467 char *full_name = mono_type_full_name (&klass->byval_arg);
7468
7469 hashes [0] = mono_metadata_str_hash (full_name);
7470 hashes [1] = 0;
7471 g_free (full_name);
7472 } else {
7473 hashes [0] = mono_metadata_str_hash (klass->name);
7474 hashes [1] = mono_metadata_str_hash (klass->name_space);
7475 }
7476 if (method->wrapper_type == MONO_WRAPPER_STFLD || method->wrapper_type == MONO_WRAPPER_LDFLD || method->wrapper_type == MONO_WRAPPER_LDFLDA)
7477 /* The method name includes a stringified pointer */
7478 hashes [2] = 0;
7479 else
7480 hashes [2] = mono_metadata_str_hash (method->name);
7481 hashes [3] = method->wrapper_type;
7482 hashes [4] = mono_aot_type_hash (sig->ret);
7483 hindex = 5;
7484 for (i = 0; i < sig->param_count; i++) {
7485 hashes [hindex ++] = mono_aot_type_hash (sig->params [i]);
7486 }
7487 if (ginst) {
7488 for (i = 0; i < ginst->type_argc; ++i)
7489 hashes [hindex ++] = mono_aot_type_hash (ginst->type_argv [i]);
7490 }
7491 g_assert (hindex == hashes_count);
7492
7493 /* Setup internal state */
7494 a = b = c = 0xdeadbeef + (((guint32)hashes_count)<<2);
7495
7496 /* Handle most of the hashes */
7497 while (hashes_count > 3) {
7498 a += hashes [0];
7499 b += hashes [1];
7500 c += hashes [2];
7501 mix (a,b,c);
7502 hashes_count -= 3;
7503 hashes += 3;
7504 }
7505
7506 /* Handle the last 3 hashes (all the case statements fall through) */
7507 switch (hashes_count) {
7508 case 3 : c += hashes [2];
7509 case 2 : b += hashes [1];
7510 case 1 : a += hashes [0];
7511 final (a,b,c);
7512 case 0: /* nothing left to add */
7513 break;
7514 }
7515
7516 free (hashes_start);
7517
7518 return c;
7519 }
7520 #undef rot
7521 #undef mix
7522 #undef final
7523
7524 /*
7525 * mono_aot_get_array_helper_from_wrapper;
7526 *
7527 * Get the helper method in Array called by an array wrapper method.
7528 */
7529 MonoMethod*
7530 mono_aot_get_array_helper_from_wrapper (MonoMethod *method)
7531 {
7532 MonoMethod *m;
7533 const char *prefix;
7534 MonoGenericContext ctx;
7535 MonoType *args [16];
7536 char *mname, *iname, *s, *s2, *helper_name = NULL;
7537
7538 prefix = "System.Collections.Generic";
7539 s = g_strdup_printf ("%s", method->name + strlen (prefix) + 1);
7540 s2 = strstr (s, "`1.");
7541 g_assert (s2);
7542 s2 [0] = '\0';
7543 iname = s;
7544 mname = s2 + 3;
7545
7546 //printf ("X: %s %s\n", iname, mname);
7547
7548 if (!strcmp (iname, "IList"))
7549 helper_name = g_strdup_printf ("InternalArray__%s", mname);
7550 else
7551 helper_name = g_strdup_printf ("InternalArray__%s_%s", iname, mname);
7552 m = mono_class_get_method_from_name (mono_defaults.array_class, helper_name, mono_method_signature (method)->param_count);
7553 g_assert (m);
7554 g_free (helper_name);
7555 g_free (s);
7556
7557 if (m->is_generic) {
7558 memset (&ctx, 0, sizeof (ctx));
7559 args [0] = &method->klass->element_class->byval_arg;
7560 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
7561 m = mono_class_inflate_generic_method (m, &ctx);
7562 }
7563
7564 return m;
7565 }
7566
7567 #if !defined(DISABLE_AOT) && !defined(DISABLE_JIT)
7568
7569 typedef struct HashEntry {
7570 guint32 key, value, index;
7571 struct HashEntry *next;
7572 } HashEntry;
7573
7574 /*
7575 * emit_extra_methods:
7576 *
7577 * Emit methods which are not in the METHOD table, like wrappers.
7578 */
7579 static void
7580 emit_extra_methods (MonoAotCompile *acfg)
7581 {
7582 int i, table_size, buf_size;
7583 char symbol [256];
7584 guint8 *p, *buf;
7585 guint32 *info_offsets;
7586 guint32 hash;
7587 GPtrArray *table;
7588 HashEntry *entry, *new_entry;
7589 int nmethods, max_chain_length;
7590 int *chain_lengths;
7591
7592 info_offsets = g_new0 (guint32, acfg->extra_methods->len);
7593
7594 /* Emit method info */
7595 nmethods = 0;
7596 for (i = 0; i < acfg->extra_methods->len; ++i) {
7597 MonoMethod *method = g_ptr_array_index (acfg->extra_methods, i);
7598 MonoCompile *cfg = g_hash_table_lookup (acfg->method_to_cfg, method);
7599
7600 if (!cfg)
7601 continue;
7602
7603 buf_size = 10240;
7604 p = buf = g_malloc (buf_size);
7605
7606 nmethods ++;
7607
7608 method = cfg->method_to_register;
7609
7610 encode_method_ref (acfg, method, p, &p);
7611
7612 g_assert ((p - buf) < buf_size);
7613
7614 info_offsets [i] = add_to_blob (acfg, buf, p - buf);
7615 g_free (buf);
7616 }
7617
7618 /*
7619 * Construct a chained hash table for mapping indexes in extra_method_info to
7620 * method indexes.
7621 */
7622 table_size = g_spaced_primes_closest ((int)(nmethods * 1.5));
7623 table = g_ptr_array_sized_new (table_size);
7624 for (i = 0; i < table_size; ++i)
7625 g_ptr_array_add (table, NULL);
7626 chain_lengths = g_new0 (int, table_size);
7627 max_chain_length = 0;
7628 for (i = 0; i < acfg->extra_methods->len; ++i) {
7629 MonoMethod *method = g_ptr_array_index (acfg->extra_methods, i);
7630 MonoCompile *cfg = g_hash_table_lookup (acfg->method_to_cfg, method);
7631 guint32 key, value;
7632
7633 if (!cfg)
7634 continue;
7635
7636 key = info_offsets [i];
7637 value = get_method_index (acfg, method);
7638
7639 hash = mono_aot_method_hash (method) % table_size;
7640 //printf ("X: %s %d\n", mono_method_full_name (method, 1), hash);
7641
7642 chain_lengths [hash] ++;
7643 max_chain_length = MAX (max_chain_length, chain_lengths [hash]);
7644
7645 new_entry = mono_mempool_alloc0 (acfg->mempool, sizeof (HashEntry));
7646 new_entry->key = key;
7647 new_entry->value = value;
7648
7649 entry = g_ptr_array_index (table, hash);
7650 if (entry == NULL) {
7651 new_entry->index = hash;
7652 g_ptr_array_index (table, hash) = new_entry;
7653 } else {
7654 while (entry->next)
7655 entry = entry->next;
7656
7657 entry->next = new_entry;
7658 new_entry->index = table->len;
7659 g_ptr_array_add (table, new_entry);
7660 }
7661 }
7662
7663 //printf ("MAX: %d\n", max_chain_length);
7664
7665 /* Emit the table */
7666 sprintf (symbol, "extra_method_table");
7667 emit_section_change (acfg, RODATA_SECT, 0);
7668 emit_alignment (acfg, 8);
7669 emit_label (acfg, symbol);
7670
7671 emit_int32 (acfg, table_size);
7672 for (i = 0; i < table->len; ++i) {
7673 HashEntry *entry = g_ptr_array_index (table, i);
7674
7675 if (entry == NULL) {
7676 emit_int32 (acfg, 0);
7677 emit_int32 (acfg, 0);
7678 emit_int32 (acfg, 0);
7679 } else {
7680 //g_assert (entry->key > 0);
7681 emit_int32 (acfg, entry->key);
7682 emit_int32 (acfg, entry->value);
7683 if (entry->next)
7684 emit_int32 (acfg, entry->next->index);
7685 else
7686 emit_int32 (acfg, 0);
7687 }
7688 }
7689
7690 /*
7691 * Emit a table reverse mapping method indexes to their index in extra_method_info.
7692 * This is used by mono_aot_find_jit_info ().
7693 */
7694 sprintf (symbol, "extra_method_info_offsets");
7695 emit_section_change (acfg, RODATA_SECT, 0);
7696 emit_alignment (acfg, 8);
7697 emit_label (acfg, symbol);
7698
7699 emit_int32 (acfg, acfg->extra_methods->len);
7700 for (i = 0; i < acfg->extra_methods->len; ++i) {
7701 MonoMethod *method = g_ptr_array_index (acfg->extra_methods, i);
7702
7703 emit_int32 (acfg, get_method_index (acfg, method));
7704 emit_int32 (acfg, info_offsets [i]);
7705 }
7706 }
7707
7708 static void
7709 emit_exception_info (MonoAotCompile *acfg)
7710 {
7711 int i;
7712 char symbol [256];
7713 gint32 *offsets;
7714
7715 offsets = g_new0 (gint32, acfg->nmethods);
7716 for (i = 0; i < acfg->nmethods; ++i) {
7717 if (acfg->cfgs [i]) {
7718 emit_exception_debug_info (acfg, acfg->cfgs [i]);
7719 offsets [i] = acfg->cfgs [i]->ex_info_offset;
7720 } else {
7721 offsets [i] = 0;
7722 }
7723 }
7724
7725 sprintf (symbol, "ex_info_offsets");
7726 emit_section_change (acfg, RODATA_SECT, 1);
7727 emit_alignment (acfg, 8);
7728 emit_label (acfg, symbol);
7729
7730 acfg->stats.offsets_size += emit_offset_table (acfg, acfg->nmethods, 10, offsets);
7731 g_free (offsets);
7732 }
7733
7734 static void
7735 emit_unwind_info (MonoAotCompile *acfg)
7736 {
7737 int i;
7738 char symbol [128];
7739
7740 /*
7741 * The unwind info contains a lot of duplicates so we emit each unique
7742 * entry once, and only store the offset from the start of the table in the
7743 * exception info.
7744 */
7745
7746 sprintf (symbol, "unwind_info");
7747 emit_section_change (acfg, RODATA_SECT, 1);
7748 emit_alignment (acfg, 8);
7749 emit_label (acfg, symbol);
7750
7751 for (i = 0; i < acfg->unwind_ops->len; ++i) {
7752 guint32 index = GPOINTER_TO_UINT (g_ptr_array_index (acfg->unwind_ops, i));
7753 guint8 *unwind_info;
7754 guint32 unwind_info_len;
7755 guint8 buf [16];
7756 guint8 *p;
7757
7758 unwind_info = mono_get_cached_unwind_info (index, &unwind_info_len);
7759
7760 p = buf;
7761 encode_value (unwind_info_len, p, &p);
7762 emit_bytes (acfg, buf, p - buf);
7763 emit_bytes (acfg, unwind_info, unwind_info_len);
7764
7765 acfg->stats.unwind_info_size += (p - buf) + unwind_info_len;
7766 }
7767 }
7768
7769 static void
7770 emit_class_info (MonoAotCompile *acfg)
7771 {
7772 int i;
7773 char symbol [256];
7774 gint32 *offsets;
7775
7776 offsets = g_new0 (gint32, acfg->image->tables [MONO_TABLE_TYPEDEF].rows);
7777 for (i = 0; i < acfg->image->tables [MONO_TABLE_TYPEDEF].rows; ++i)
7778 offsets [i] = emit_klass_info (acfg, MONO_TOKEN_TYPE_DEF | (i + 1));
7779
7780 sprintf (symbol, "class_info_offsets");
7781 emit_section_change (acfg, RODATA_SECT, 1);
7782 emit_alignment (acfg, 8);
7783 emit_label (acfg, symbol);
7784
7785 acfg->stats.offsets_size += emit_offset_table (acfg, acfg->image->tables [MONO_TABLE_TYPEDEF].rows, 10, offsets);
7786 g_free (offsets);
7787 }
7788
7789 typedef struct ClassNameTableEntry {
7790 guint32 token, index;
7791 struct ClassNameTableEntry *next;
7792 } ClassNameTableEntry;
7793
7794 static void
7795 emit_class_name_table (MonoAotCompile *acfg)
7796 {
7797 int i, table_size;
7798 guint32 token, hash;
7799 MonoClass *klass;
7800 GPtrArray *table;
7801 char *full_name;
7802 char symbol [256];
7803 ClassNameTableEntry *entry, *new_entry;
7804
7805 /*
7806 * Construct a chained hash table for mapping class names to typedef tokens.
7807 */
7808 table_size = g_spaced_primes_closest ((int)(acfg->image->tables [MONO_TABLE_TYPEDEF].rows * 1.5));
7809 table = g_ptr_array_sized_new (table_size);
7810 for (i = 0; i < table_size; ++i)
7811 g_ptr_array_add (table, NULL);
7812 for (i = 0; i < acfg->image->tables [MONO_TABLE_TYPEDEF].rows; ++i) {
7813 token = MONO_TOKEN_TYPE_DEF | (i + 1);
7814 klass = mono_class_get (acfg->image, token);
7815 if (!klass) {
7816 mono_loader_clear_error ();
7817 continue;
7818 }
7819 full_name = mono_type_get_name_full (mono_class_get_type (klass), MONO_TYPE_NAME_FORMAT_FULL_NAME);
7820 hash = mono_metadata_str_hash (full_name) % table_size;
7821 g_free (full_name);
7822
7823 /* FIXME: Allocate from the mempool */
7824 new_entry = g_new0 (ClassNameTableEntry, 1);
7825 new_entry->token = token;
7826
7827 entry = g_ptr_array_index (table, hash);
7828 if (entry == NULL) {
7829 new_entry->index = hash;
7830 g_ptr_array_index (table, hash) = new_entry;
7831 } else {
7832 while (entry->next)
7833 entry = entry->next;
7834
7835 entry->next = new_entry;
7836 new_entry->index = table->len;
7837 g_ptr_array_add (table, new_entry);
7838 }
7839 }
7840
7841 /* Emit the table */
7842 sprintf (symbol, "class_name_table");
7843 emit_section_change (acfg, RODATA_SECT, 0);
7844 emit_alignment (acfg, 8);
7845 emit_label (acfg, symbol);
7846
7847 /* FIXME: Optimize memory usage */
7848 g_assert (table_size < 65000);
7849 emit_int16 (acfg, table_size);
7850 g_assert (table->len < 65000);
7851 for (i = 0; i < table->len; ++i) {
7852 ClassNameTableEntry *entry = g_ptr_array_index (table, i);
7853
7854 if (entry == NULL) {
7855 emit_int16 (acfg, 0);
7856 emit_int16 (acfg, 0);
7857 } else {
7858 emit_int16 (acfg, mono_metadata_token_index (entry->token));
7859 if (entry->next)
7860 emit_int16 (acfg, entry->next->index);
7861 else
7862 emit_int16 (acfg, 0);
7863 }
7864 }
7865 }
7866
7867 static void
7868 emit_image_table (MonoAotCompile *acfg)
7869 {
7870 int i;
7871 char symbol [256];
7872
7873 /*
7874 * The image table is small but referenced in a lot of places.
7875 * So we emit it at once, and reference its elements by an index.
7876 */
7877
7878 sprintf (symbol, "image_table");
7879 emit_section_change (acfg, RODATA_SECT, 1);
7880 emit_alignment (acfg, 8);
7881 emit_label (acfg, symbol);
7882
7883 emit_int32 (acfg, acfg->image_table->len);
7884 for (i = 0; i < acfg->image_table->len; i++) {
7885 MonoImage *image = (MonoImage*)g_ptr_array_index (acfg->image_table, i);
7886 MonoAssemblyName *aname = &image->assembly->aname;
7887
7888 /* FIXME: Support multi-module assemblies */
7889 g_assert (image->assembly->image == image);
7890
7891 emit_string (acfg, image->assembly_name);
7892 emit_string (acfg, image->guid);
7893 emit_string (acfg, aname->culture ? aname->culture : "");
7894 emit_string (acfg, (const char*)aname->public_key_token);
7895
7896 emit_alignment (acfg, 8);
7897 emit_int32 (acfg, aname->flags);
7898 emit_int32 (acfg, aname->major);
7899 emit_int32 (acfg, aname->minor);
7900 emit_int32 (acfg, aname->build);
7901 emit_int32 (acfg, aname->revision);
7902 }
7903 }
7904
7905 static void
7906 emit_got_info (MonoAotCompile *acfg)
7907 {
7908 char symbol [256];
7909 int i, first_plt_got_patch, buf_size;
7910 guint8 *p, *buf;
7911 guint32 *got_info_offsets;
7912
7913 /* Add the patches needed by the PLT to the GOT */
7914 acfg->plt_got_offset_base = acfg->got_offset;
7915 first_plt_got_patch = acfg->got_patches->len;
7916 for (i = 1; i < acfg->plt_offset; ++i) {
7917 MonoPltEntry *plt_entry = g_hash_table_lookup (acfg->plt_offset_to_entry, GUINT_TO_POINTER (i));
7918
7919 g_ptr_array_add (acfg->got_patches, plt_entry->ji);
7920
7921 acfg->stats.got_slot_types [plt_entry->ji->type] ++;
7922 }
7923
7924 acfg->got_offset += acfg->plt_offset;
7925
7926 /**
7927 * FIXME:
7928 * - optimize offsets table.
7929 * - reduce number of exported symbols.
7930 * - emit info for a klass only once.
7931 * - determine when a method uses a GOT slot which is guaranteed to be already
7932 * initialized.
7933 * - clean up and document the code.
7934 * - use String.Empty in class libs.
7935 */
7936
7937 /* Encode info required to decode shared GOT entries */
7938 buf_size = acfg->got_patches->len * 128;
7939 p = buf = mono_mempool_alloc (acfg->mempool, buf_size);
7940 got_info_offsets = mono_mempool_alloc (acfg->mempool, acfg->got_patches->len * sizeof (guint32));
7941 acfg->plt_got_info_offsets = mono_mempool_alloc (acfg->mempool, acfg->plt_offset * sizeof (guint32));
7942 /* Unused */
7943 if (acfg->plt_offset)
7944 acfg->plt_got_info_offsets [0] = 0;
7945 for (i = 0; i < acfg->got_patches->len; ++i) {
7946 MonoJumpInfo *ji = g_ptr_array_index (acfg->got_patches, i);
7947 guint8 *p2;
7948
7949 p = buf;
7950
7951 encode_value (ji->type, p, &p);
7952 p2 = p;
7953 encode_patch (acfg, ji, p, &p);
7954 acfg->stats.got_slot_info_sizes [ji->type] += p - p2;
7955 g_assert (p - buf <= buf_size);
7956 got_info_offsets [i] = add_to_blob (acfg, buf, p - buf);
7957
7958 if (i >= first_plt_got_patch)
7959 acfg->plt_got_info_offsets [i - first_plt_got_patch + 1] = got_info_offsets [i];
7960 acfg->stats.got_info_size += p - buf;
7961 }
7962
7963 /* Emit got_info_offsets table */
7964 sprintf (symbol, "got_info_offsets");
7965 emit_section_change (acfg, RODATA_SECT, 1);
7966 emit_alignment (acfg, 8);
7967 emit_label (acfg, symbol);
7968
7969 /* No need to emit offsets for the got plt entries, the plt embeds them directly */
7970 acfg->stats.offsets_size += emit_offset_table (acfg, first_plt_got_patch, 10, (gint32*)got_info_offsets);
7971 }
7972
7973 static void
7974 emit_got (MonoAotCompile *acfg)
7975 {
7976 char symbol [256];
7977
7978 if (!acfg->llvm) {
7979 /* Don't make GOT global so accesses to it don't need relocations */
7980 sprintf (symbol, "%s", acfg->got_symbol);
7981 emit_section_change (acfg, ".bss", 0);
7982 emit_alignment (acfg, 8);
7983 emit_local_symbol (acfg, symbol, "got_end", FALSE);
7984 emit_label (acfg, symbol);
7985 if (acfg->got_offset > 0)
7986 emit_zero_bytes (acfg, (int)(acfg->got_offset * sizeof (gpointer)));
7987
7988 sprintf (symbol, "got_end");
7989 emit_label (acfg, symbol);
7990 }
7991 }
7992
7993 typedef struct GlobalsTableEntry {
7994 guint32 value, index;
7995 struct GlobalsTableEntry *next;
7996 } GlobalsTableEntry;
7997
7998 static void
7999 emit_globals (MonoAotCompile *acfg)
8000 {
8001 int i, table_size;
8002 guint32 hash;
8003 GPtrArray *table;
8004 char symbol [256];
8005 GlobalsTableEntry *entry, *new_entry;
8006
8007 if (!acfg->aot_opts.static_link)
8008 return;
8009
8010 /*
8011 * When static linking, we emit a table containing our globals.
8012 */
8013
8014 /*
8015 * Construct a chained hash table for mapping global names to their index in
8016 * the globals table.
8017 */
8018 table_size = g_spaced_primes_closest ((int)(acfg->globals->len * 1.5));
8019 table = g_ptr_array_sized_new (table_size);
8020 for (i = 0; i < table_size; ++i)
8021 g_ptr_array_add (table, NULL);
8022 for (i = 0; i < acfg->globals->len; ++i) {
8023 char *name = g_ptr_array_index (acfg->globals, i);
8024
8025 hash = mono_metadata_str_hash (name) % table_size;
8026
8027 /* FIXME: Allocate from the mempool */
8028 new_entry = g_new0 (GlobalsTableEntry, 1);
8029 new_entry->value = i;
8030
8031 entry = g_ptr_array_index (table, hash);
8032 if (entry == NULL) {
8033 new_entry->index = hash;
8034 g_ptr_array_index (table, hash) = new_entry;
8035 } else {
8036 while (entry->next)
8037 entry = entry->next;
8038
8039 entry->next = new_entry;
8040 new_entry->index = table->len;
8041 g_ptr_array_add (table, new_entry);
8042 }
8043 }
8044
8045 /* Emit the table */
8046 sprintf (symbol, ".Lglobals_hash");
8047 emit_section_change (acfg, RODATA_SECT, 0);
8048 emit_alignment (acfg, 8);
8049 emit_label (acfg, symbol);
8050
8051 /* FIXME: Optimize memory usage */
8052 g_assert (table_size < 65000);
8053 emit_int16 (acfg, table_size);
8054 for (i = 0; i < table->len; ++i) {
8055 GlobalsTableEntry *entry = g_ptr_array_index (table, i);
8056
8057 if (entry == NULL) {
8058 emit_int16 (acfg, 0);
8059 emit_int16 (acfg, 0);
8060 } else {
8061 emit_int16 (acfg, entry->value + 1);
8062 if (entry->next)
8063 emit_int16 (acfg, entry->next->index);
8064 else
8065 emit_int16 (acfg, 0);
8066 }
8067 }
8068
8069 /* Emit the names */
8070 for (i = 0; i < acfg->globals->len; ++i) {
8071 char *name = g_ptr_array_index (acfg->globals, i);
8072
8073 sprintf (symbol, "name_%d", i);
8074 emit_section_change (acfg, RODATA_SECT, 1);
8075 #ifdef TARGET_MACH
8076 emit_alignment (acfg, 4);
8077 #endif
8078 emit_label (acfg, symbol);
8079 emit_string (acfg, name);
8080 }
8081
8082 /* Emit the globals table */
8083 sprintf (symbol, "globals");
8084 emit_section_change (acfg, ".data", 0);
8085 /* This is not a global, since it is accessed by the init function */
8086 emit_alignment (acfg, 8);
8087 emit_label (acfg, symbol);
8088
8089 sprintf (symbol, "%sglobals_hash", acfg->temp_prefix);
8090 emit_pointer (acfg, symbol);
8091
8092 for (i = 0; i < acfg->globals->len; ++i) {
8093 char *name = g_ptr_array_index (acfg->globals, i);
8094
8095 sprintf (symbol, "name_%d", i);
8096 emit_pointer (acfg, symbol);
8097
8098 sprintf (symbol, "%s", name);
8099 emit_pointer (acfg, symbol);
8100 }
8101 /* Null terminate the table */
8102 emit_int32 (acfg, 0);
8103 emit_int32 (acfg, 0);
8104 }
8105
8106 static void
8107 emit_autoreg (MonoAotCompile *acfg)
8108 {
8109 char *symbol;
8110
8111 /*
8112 * Emit a function into the .ctor section which will be called by the ELF
8113 * loader to register this module with the runtime.
8114 */
8115 if (! (!acfg->use_bin_writer && acfg->aot_opts.static_link && acfg->aot_opts.autoreg))
8116 return;
8117
8118 symbol = g_strdup_printf ("_%s_autoreg", acfg->static_linking_symbol);
8119
8120 arch_emit_autoreg (acfg, symbol);
8121
8122 g_free (symbol);
8123 }
8124
8125 static void
8126 emit_mem_end (MonoAotCompile *acfg)
8127 {
8128 char symbol [128];
8129
8130 sprintf (symbol, "mem_end");
8131 emit_section_change (acfg, ".text", 1);
8132 emit_alignment (acfg, 8);
8133 emit_label (acfg, symbol);
8134 }
8135
8136 /*
8137 * Emit a structure containing all the information not stored elsewhere.
8138 */
8139 static void
8140 emit_file_info (MonoAotCompile *acfg)
8141 {
8142 char symbol [256];
8143 int i;
8144 int gc_name_offset;
8145 const char *gc_name;
8146 char *build_info;
8147
8148 emit_string_symbol (acfg, "assembly_guid" , acfg->image->guid);
8149
8150 if (acfg->aot_opts.bind_to_runtime_version) {
8151 build_info = mono_get_runtime_build_info ();
8152 emit_string_symbol (acfg, "runtime_version", build_info);
8153 g_free (build_info);
8154 } else {
8155 emit_string_symbol (acfg, "runtime_version", "");
8156 }
8157
8158 /* Emit a string holding the assembly name */
8159 emit_string_symbol (acfg, "assembly_name", acfg->image->assembly->aname.name);
8160
8161 /*
8162 * The managed allocators are GC specific, so can't use an AOT image created by one GC
8163 * in another.
8164 */
8165 gc_name = mono_gc_get_gc_name ();
8166 gc_name_offset = add_to_blob (acfg, (guint8*)gc_name, strlen (gc_name) + 1);
8167
8168 sprintf (symbol, "%smono_aot_file_info", acfg->user_symbol_prefix);
8169 emit_section_change (acfg, ".data", 0);
8170 emit_alignment (acfg, 8);
8171 emit_label (acfg, symbol);
8172 if (!acfg->aot_opts.static_link)
8173 emit_global (acfg, symbol, FALSE);
8174
8175 /* The data emitted here must match MonoAotFileInfo. */
8176
8177 emit_int32 (acfg, MONO_AOT_FILE_VERSION);
8178 emit_int32 (acfg, 0);
8179
8180 /*
8181 * We emit pointers to our data structures instead of emitting global symbols which
8182 * point to them, to reduce the number of globals, and because using globals leads to
8183 * various problems (i.e. arm/thumb).
8184 */
8185 emit_pointer (acfg, acfg->got_symbol);
8186 emit_pointer (acfg, acfg->methods_symbol);
8187 if (acfg->llvm) {
8188 /*
8189 * Emit a reference to the mono_eh_frame table created by our modified LLVM compiler.
8190 */
8191 emit_pointer (acfg, "mono_eh_frame");
8192 } else {
8193 emit_pointer (acfg, NULL);
8194 }
8195 emit_pointer (acfg, "blob");
8196 emit_pointer (acfg, "class_name_table");
8197 emit_pointer (acfg, "class_info_offsets");
8198 emit_pointer (acfg, "method_info_offsets");
8199 emit_pointer (acfg, "ex_info_offsets");
8200 emit_pointer (acfg, "code_offsets");
8201 if (acfg->direct_method_addresses)
8202 emit_pointer (acfg, "method_addresses");
8203 else
8204 emit_pointer (acfg, NULL);
8205 emit_pointer (acfg, "extra_method_info_offsets");
8206 emit_pointer (acfg, "extra_method_table");
8207 emit_pointer (acfg, "got_info_offsets");
8208 emit_pointer (acfg, "methods_end");
8209 emit_pointer (acfg, "unwind_info");
8210 emit_pointer (acfg, "mem_end");
8211 emit_pointer (acfg, "image_table");
8212 emit_pointer (acfg, "plt");
8213 emit_pointer (acfg, "plt_end");
8214 emit_pointer (acfg, "assembly_guid");
8215 emit_pointer (acfg, "runtime_version");
8216 if (acfg->num_trampoline_got_entries) {
8217 emit_pointer (acfg, "specific_trampolines");
8218 emit_pointer (acfg, "static_rgctx_trampolines");
8219 emit_pointer (acfg, "imt_thunks");
8220 emit_pointer (acfg, "gsharedvt_arg_trampolines");
8221 } else {
8222 emit_pointer (acfg, NULL);
8223 emit_pointer (acfg, NULL);
8224 emit_pointer (acfg, NULL);
8225 emit_pointer (acfg, NULL);
8226 }
8227 if (acfg->thumb_mixed) {
8228 emit_pointer (acfg, "thumb_end");
8229 } else {
8230 emit_pointer (acfg, NULL);
8231 }
8232 if (acfg->aot_opts.static_link) {
8233 emit_pointer (acfg, "globals");
8234 } else {
8235 emit_pointer (acfg, NULL);
8236 }
8237 emit_pointer (acfg, "assembly_name");
8238 emit_pointer (acfg, "unbox_trampolines");
8239 emit_pointer (acfg, "unbox_trampolines_end");
8240
8241 emit_int32 (acfg, acfg->plt_got_offset_base);
8242 emit_int32 (acfg, (int)(acfg->got_offset * sizeof (gpointer)));
8243 emit_int32 (acfg, acfg->plt_offset);
8244 emit_int32 (acfg, acfg->nmethods);
8245 emit_int32 (acfg, acfg->flags);
8246 emit_int32 (acfg, acfg->opts);
8247 emit_int32 (acfg, acfg->simd_opts);
8248 emit_int32 (acfg, gc_name_offset);
8249
8250 for (i = 0; i < MONO_AOT_TRAMP_NUM; ++i)
8251 emit_int32 (acfg, acfg->num_trampolines [i]);
8252 for (i = 0; i < MONO_AOT_TRAMP_NUM; ++i)
8253 emit_int32 (acfg, acfg->trampoline_got_offset_base [i]);
8254 for (i = 0; i < MONO_AOT_TRAMP_NUM; ++i)
8255 emit_int32 (acfg, acfg->trampoline_size [i]);
8256 emit_int32 (acfg, acfg->aot_opts.nrgctx_fetch_trampolines);
8257
8258 #if defined (TARGET_ARM) && defined (TARGET_MACH)
8259 {
8260 MonoType t;
8261 int align = 0;
8262
8263 memset (&t, 0, sizeof (MonoType));
8264 t.type = MONO_TYPE_R8;
8265 mono_type_size (&t, &align);
8266 emit_int32 (acfg, align);
8267
8268 memset (&t, 0, sizeof (MonoType));
8269 t.type = MONO_TYPE_I8;
8270 mono_type_size (&t, &align);
8271
8272 emit_int32 (acfg, align);
8273 }
8274 #else
8275 emit_int32 (acfg, MONO_ABI_ALIGNOF (double));
8276 emit_int32 (acfg, MONO_ABI_ALIGNOF (gint64));
8277 #endif
8278 emit_int32 (acfg, MONO_TRAMPOLINE_NUM);
8279 emit_int32 (acfg, acfg->tramp_page_size);
8280 for (i = 0; i < MONO_AOT_TRAMP_NUM; ++i)
8281 emit_int32 (acfg, acfg->tramp_page_code_offsets [i]);
8282
8283 if (acfg->aot_opts.static_link) {
8284 char *p;
8285
8286 /*
8287 * Emit a global symbol which can be passed by an embedding app to
8288 * mono_aot_register_module (). The symbol points to a pointer to the the file info
8289 * structure.
8290 */
8291 sprintf (symbol, "%smono_aot_module_%s_info", acfg->user_symbol_prefix, acfg->image->assembly->aname.name);
8292
8293 /* Get rid of characters which cannot occur in symbols */
8294 p = symbol;
8295 for (p = symbol; *p; ++p) {
8296 if (!(isalnum (*p) || *p == '_'))
8297 *p = '_';
8298 }
8299 acfg->static_linking_symbol = g_strdup (symbol);
8300 emit_global_inner (acfg, symbol, FALSE);
8301 emit_alignment (acfg, sizeof (gpointer));
8302 emit_label (acfg, symbol);
8303 emit_pointer_2 (acfg, acfg->user_symbol_prefix, "mono_aot_file_info");
8304 }
8305 }
8306
8307 static void
8308 emit_blob (MonoAotCompile *acfg)
8309 {
8310 char symbol [128];
8311
8312 sprintf (symbol, "blob");
8313 emit_section_change (acfg, RODATA_SECT, 1);
8314 emit_alignment (acfg, 8);
8315 emit_label (acfg, symbol);
8316
8317 emit_bytes (acfg, (guint8*)acfg->blob.data, acfg->blob.index);
8318 }
8319
8320 static void
8321 emit_objc_selectors (MonoAotCompile *acfg)
8322 {
8323 int i;
8324
8325 if (!acfg->objc_selectors || acfg->objc_selectors->len == 0)
8326 return;
8327
8328 /*
8329 * From
8330 * cat > foo.m << EOF
8331 * void *ret ()
8332 * {
8333 * return @selector(print:);
8334 * }
8335 * EOF
8336 */
8337
8338 img_writer_emit_unset_mode (acfg->w);
8339 g_assert (acfg->fp);
8340 fprintf (acfg->fp, ".section __DATA,__objc_selrefs,literal_pointers,no_dead_strip\n");
8341 fprintf (acfg->fp, ".align 3\n");
8342 for (i = 0; i < acfg->objc_selectors->len; ++i) {
8343 fprintf (acfg->fp, "L_OBJC_SELECTOR_REFERENCES_%d:\n", i);
8344 fprintf (acfg->fp, ".long L_OBJC_METH_VAR_NAME_%d\n", i);
8345 }
8346 fprintf (acfg->fp, ".section __TEXT,__cstring,cstring_literals\n");
8347 for (i = 0; i < acfg->objc_selectors->len; ++i) {
8348 fprintf (acfg->fp, "L_OBJC_METH_VAR_NAME_%d:\n", i);
8349 fprintf (acfg->fp, ".asciz \"%s\"\n", (char*)g_ptr_array_index (acfg->objc_selectors, i));
8350 }
8351
8352 fprintf (acfg->fp, ".section __DATA,__objc_imageinfo,regular,no_dead_strip\n");
8353 fprintf (acfg->fp, ".align 3\n");
8354 fprintf (acfg->fp, "L_OBJC_IMAGE_INFO:\n");
8355 fprintf (acfg->fp, ".long 0\n");
8356 fprintf (acfg->fp, ".long 16\n");
8357 }
8358
8359 static void
8360 emit_dwarf_info (MonoAotCompile *acfg)
8361 {
8362 #ifdef EMIT_DWARF_INFO
8363 int i;
8364 char symbol2 [128];
8365
8366 /* DIEs for methods */
8367 for (i = 0; i < acfg->nmethods; ++i) {
8368 MonoCompile *cfg = acfg->cfgs [i];
8369
8370 if (!cfg)
8371 continue;
8372
8373 // FIXME: LLVM doesn't define .Lme_...
8374 if (cfg->compile_llvm)
8375 continue;
8376
8377 sprintf (symbol2, "%sme_%x", acfg->temp_prefix, i);
8378
8379 mono_dwarf_writer_emit_method (acfg->dwarf, cfg, cfg->method, cfg->asm_symbol, symbol2, 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 ()));
8380 }
8381 #endif
8382 }
8383
8384 static void
8385 collect_methods (MonoAotCompile *acfg)
8386 {
8387 int mindex, i;
8388 MonoImage *image = acfg->image;
8389
8390 /* Collect methods */
8391 for (i = 0; i < image->tables [MONO_TABLE_METHOD].rows; ++i) {
8392 MonoMethod *method;
8393 guint32 token = MONO_TOKEN_METHOD_DEF | (i + 1);
8394
8395 method = mono_get_method (acfg->image, token, NULL);
8396
8397 if (!method) {
8398 printf ("Failed to load method 0x%x from '%s'.\n", token, image->name);
8399 printf ("Run with MONO_LOG_LEVEL=debug for more information.\n");
8400 exit (1);
8401 }
8402
8403 /* Load all methods eagerly to skip the slower lazy loading code */
8404 mono_class_setup_methods (method->klass);
8405
8406 if (acfg->aot_opts.full_aot && method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) {
8407 /* Compile the wrapper instead */
8408 /* We do this here instead of add_wrappers () because it is easy to do it here */
8409 MonoMethod *wrapper = mono_marshal_get_native_wrapper (method, check_for_pending_exc, TRUE);
8410 method = wrapper;
8411 }
8412
8413 /* FIXME: Some mscorlib methods don't have debug info */
8414 /*
8415 if (acfg->aot_opts.soft_debug && !method->wrapper_type) {
8416 if (!((method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
8417 (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
8418 (method->flags & METHOD_ATTRIBUTE_ABSTRACT) ||
8419 (method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL))) {
8420 if (!mono_debug_lookup_method (method)) {
8421 fprintf (stderr, "Method %s has no debug info, probably the .mdb file for the assembly is missing.\n", mono_method_full_name (method, TRUE));
8422 exit (1);
8423 }
8424 }
8425 }
8426 */
8427
8428 /* Since we add the normal methods first, their index will be equal to their zero based token index */
8429 add_method_with_index (acfg, method, i, FALSE);
8430 acfg->method_index ++;
8431 }
8432
8433 /* gsharedvt methods */
8434 for (mindex = 0; mindex < image->tables [MONO_TABLE_METHOD].rows; ++mindex) {
8435 MonoMethod *method;
8436 guint32 token = MONO_TOKEN_METHOD_DEF | (mindex + 1);
8437
8438 if (!(acfg->opts & MONO_OPT_GSHAREDVT))
8439 continue;
8440
8441 method = mono_get_method (acfg->image, token, NULL);
8442 if (!method)
8443 continue;
8444 /*
8445 if (strcmp (method->name, "gshared2"))
8446 continue;
8447 */
8448 /*
8449 if (!strstr (method->klass->image->name, "mini"))
8450 continue;
8451 */
8452 if (method->is_generic || method->klass->generic_container) {
8453 MonoMethod *gshared;
8454
8455 gshared = mini_get_shared_method_full (method, TRUE, TRUE);
8456 add_extra_method (acfg, gshared);
8457 }
8458 }
8459
8460 add_generic_instances (acfg);
8461
8462 if (acfg->aot_opts.full_aot)
8463 add_wrappers (acfg);
8464 }
8465
8466 static void
8467 compile_methods (MonoAotCompile *acfg)
8468 {
8469 int i, methods_len;
8470
8471 if (acfg->aot_opts.nthreads > 0) {
8472 GPtrArray *frag;
8473 int len, j;
8474 GPtrArray *threads;
8475 HANDLE handle;
8476 gpointer *user_data;
8477 MonoMethod **methods;
8478
8479 methods_len = acfg->methods->len;
8480
8481 len = acfg->methods->len / acfg->aot_opts.nthreads;
8482 g_assert (len > 0);
8483 /*
8484 * Partition the list of methods into fragments, and hand it to threads to
8485 * process.
8486 */
8487 threads = g_ptr_array_new ();
8488 /* Make a copy since acfg->methods is modified by compile_method () */
8489 methods = g_new0 (MonoMethod*, methods_len);
8490 //memcpy (methods, g_ptr_array_index (acfg->methods, 0), sizeof (MonoMethod*) * methods_len);
8491 for (i = 0; i < methods_len; ++i)
8492 methods [i] = g_ptr_array_index (acfg->methods, i);
8493 i = 0;
8494 while (i < methods_len) {
8495 frag = g_ptr_array_new ();
8496 for (j = 0; j < len; ++j) {
8497 if (i < methods_len) {
8498 g_ptr_array_add (frag, methods [i]);
8499 i ++;
8500 }
8501 }
8502
8503 user_data = g_new0 (gpointer, 3);
8504 user_data [0] = mono_domain_get ();
8505 user_data [1] = acfg;
8506 user_data [2] = frag;
8507
8508 handle = mono_threads_create_thread ((gpointer)compile_thread_main, user_data, 0, 0, NULL);
8509 g_ptr_array_add (threads, handle);
8510 }
8511 g_free (methods);
8512
8513 for (i = 0; i < threads->len; ++i) {
8514 WaitForSingleObjectEx (g_ptr_array_index (threads, i), INFINITE, FALSE);
8515 }
8516 } else {
8517 methods_len = 0;
8518 }
8519
8520 /* Compile methods added by compile_method () or all methods if nthreads == 0 */
8521 for (i = methods_len; i < acfg->methods->len; ++i) {
8522 /* This can new methods to acfg->methods */
8523 compile_method (acfg, g_ptr_array_index (acfg->methods, i));
8524 }
8525 }
8526
8527 static int
8528 compile_asm (MonoAotCompile *acfg)
8529 {
8530 char *command, *objfile;
8531 char *outfile_name, *tmp_outfile_name;
8532 const char *tool_prefix = acfg->aot_opts.tool_prefix ? acfg->aot_opts.tool_prefix : "";
8533
8534 #if defined(TARGET_AMD64) && !defined(TARGET_MACH)
8535 #define AS_OPTIONS "--64"
8536 #elif defined(TARGET_POWERPC64)
8537 #define AS_OPTIONS "-a64 -mppc64"
8538 #define LD_OPTIONS "-m elf64ppc"
8539 #elif defined(sparc) && SIZEOF_VOID_P == 8
8540 #define AS_OPTIONS "-xarch=v9"
8541 #elif defined(TARGET_X86) && defined(TARGET_MACH) && !defined(__native_client_codegen__)
8542 #define AS_OPTIONS "-arch i386"
8543 #else
8544 #define AS_OPTIONS ""
8545 #endif
8546
8547 #ifdef __native_client_codegen__
8548 #if defined(TARGET_AMD64)
8549 #define AS_NAME "nacl64-as"
8550 #else
8551 #define AS_NAME "nacl-as"
8552 #endif
8553 #elif defined(TARGET_OSX)
8554 #define AS_NAME "clang -c -x assembler"
8555 #else
8556 #define AS_NAME "as"
8557 #endif
8558
8559 #ifndef LD_OPTIONS
8560 #define LD_OPTIONS ""
8561 #endif
8562
8563 #if defined(sparc)
8564 #define LD_NAME "ld -shared -G"
8565 #elif defined(__ppc__) && defined(TARGET_MACH)
8566 #define LD_NAME "gcc -dynamiclib"
8567 #elif defined(TARGET_AMD64) && defined(TARGET_MACH)
8568 #define LD_NAME "clang --shared"
8569 #elif defined(HOST_WIN32)
8570 #define LD_NAME "gcc -shared --dll"
8571 #elif defined(TARGET_X86) && defined(TARGET_MACH) && !defined(__native_client_codegen__)
8572 #define LD_NAME "clang -m32 -dynamiclib"
8573 #endif
8574
8575 if (acfg->aot_opts.asm_only) {
8576 printf ("Output file: '%s'.\n", acfg->tmpfname);
8577 if (acfg->aot_opts.static_link)
8578 printf ("Linking symbol: '%s'.\n", acfg->static_linking_symbol);
8579 return 0;
8580 }
8581
8582 if (acfg->aot_opts.static_link) {
8583 if (acfg->aot_opts.outfile)
8584 objfile = g_strdup_printf ("%s", acfg->aot_opts.outfile);
8585 else
8586 objfile = g_strdup_printf ("%s.o", acfg->image->name);
8587 } else {
8588 objfile = g_strdup_printf ("%s.o", acfg->tmpfname);
8589 }
8590 command = g_strdup_printf ("%s%s %s %s -o %s %s", tool_prefix, AS_NAME, AS_OPTIONS, acfg->as_args ? acfg->as_args->str : "", objfile, acfg->tmpfname);
8591 printf ("Executing the native assembler: %s\n", command);
8592 if (system (command) != 0) {
8593 g_free (command);
8594 g_free (objfile);
8595 return 1;
8596 }
8597
8598 g_free (command);
8599
8600 if (acfg->aot_opts.static_link) {
8601 printf ("Output file: '%s'.\n", objfile);
8602 printf ("Linking symbol: '%s'.\n", acfg->static_linking_symbol);
8603 g_free (objfile);
8604 return 0;
8605 }
8606
8607 if (acfg->aot_opts.outfile)
8608 outfile_name = g_strdup_printf ("%s", acfg->aot_opts.outfile);
8609 else
8610 outfile_name = g_strdup_printf ("%s%s", acfg->image->name, SHARED_EXT);
8611
8612 tmp_outfile_name = g_strdup_printf ("%s.tmp", outfile_name);
8613
8614 #ifdef LD_NAME
8615 command = g_strdup_printf ("%s -o %s %s.o", LD_NAME, tmp_outfile_name, acfg->tmpfname);
8616 #else
8617 command = g_strdup_printf ("%sld %s -shared -o %s %s.o", tool_prefix, LD_OPTIONS, tmp_outfile_name, acfg->tmpfname);
8618 #endif
8619 printf ("Executing the native linker: %s\n", command);
8620 if (system (command) != 0) {
8621 g_free (tmp_outfile_name);
8622 g_free (outfile_name);
8623 g_free (command);
8624 g_free (objfile);
8625 return 1;
8626 }
8627
8628 g_free (command);
8629
8630 /*com = g_strdup_printf ("strip --strip-unneeded %s%s", acfg->image->name, SHARED_EXT);
8631 printf ("Stripping the binary: %s\n", com);
8632 system (com);
8633 g_free (com);*/
8634
8635 #if defined(TARGET_ARM) && !defined(TARGET_MACH)
8636 /*
8637 * gas generates 'mapping symbols' each time code and data is mixed, which
8638 * happens a lot in emit_and_reloc_code (), so we need to get rid of them.
8639 */
8640 command = g_strdup_printf ("%sstrip --strip-symbol=\\$a --strip-symbol=\\$d %s", tool_prefix, tmp_outfile_name);
8641 printf ("Stripping the binary: %s\n", command);
8642 if (system (command) != 0) {
8643 g_free (tmp_outfile_name);
8644 g_free (outfile_name);
8645 g_free (command);
8646 g_free (objfile);
8647 return 1;
8648 }
8649 #endif
8650
8651 rename (tmp_outfile_name, outfile_name);
8652
8653 #if defined(TARGET_MACH)
8654 command = g_strdup_printf ("dsymutil %s", outfile_name);
8655 printf ("Executing dsymutil: %s\n", command);
8656 if (system (command) != 0) {
8657 return 1;
8658 }
8659 #endif
8660
8661 if (!acfg->aot_opts.save_temps)
8662 unlink (objfile);
8663
8664 g_free (tmp_outfile_name);
8665 g_free (outfile_name);
8666 g_free (objfile);
8667
8668 if (acfg->aot_opts.save_temps)
8669 printf ("Retained input file.\n");
8670 else
8671 unlink (acfg->tmpfname);
8672
8673 return 0;
8674 }
8675
8676 static MonoAotCompile*
8677 acfg_create (MonoAssembly *ass, guint32 opts)
8678 {
8679 MonoImage *image = ass->image;
8680 MonoAotCompile *acfg;
8681 int i;
8682
8683 acfg = g_new0 (MonoAotCompile, 1);
8684 acfg->methods = g_ptr_array_new ();
8685 acfg->method_indexes = g_hash_table_new (NULL, NULL);
8686 acfg->method_depth = g_hash_table_new (NULL, NULL);
8687 acfg->plt_offset_to_entry = g_hash_table_new (NULL, NULL);
8688 acfg->patch_to_plt_entry = g_new0 (GHashTable*, MONO_PATCH_INFO_NUM);
8689 acfg->patch_to_got_offset = g_hash_table_new (mono_patch_info_hash, mono_patch_info_equal);
8690 acfg->patch_to_got_offset_by_type = g_new0 (GHashTable*, MONO_PATCH_INFO_NUM);
8691 for (i = 0; i < MONO_PATCH_INFO_NUM; ++i)
8692 acfg->patch_to_got_offset_by_type [i] = g_hash_table_new (mono_patch_info_hash, mono_patch_info_equal);
8693 acfg->got_patches = g_ptr_array_new ();
8694 acfg->method_to_cfg = g_hash_table_new (NULL, NULL);
8695 acfg->token_info_hash = g_hash_table_new_full (NULL, NULL, NULL, g_free);
8696 acfg->method_to_pinvoke_import = g_hash_table_new_full (NULL, NULL, NULL, g_free);
8697 acfg->image_hash = g_hash_table_new (NULL, NULL);
8698 acfg->image_table = g_ptr_array_new ();
8699 acfg->globals = g_ptr_array_new ();
8700 acfg->image = image;
8701 acfg->opts = opts;
8702 /* TODO: Write out set of SIMD instructions used, rather than just those available */
8703 acfg->simd_opts = mono_arch_cpu_enumerate_simd_versions ();
8704 acfg->mempool = mono_mempool_new ();
8705 acfg->extra_methods = g_ptr_array_new ();
8706 acfg->unwind_info_offsets = g_hash_table_new (NULL, NULL);
8707 acfg->unwind_ops = g_ptr_array_new ();
8708 acfg->method_label_hash = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL);
8709 acfg->method_order = g_ptr_array_new ();
8710 acfg->export_names = g_hash_table_new (NULL, NULL);
8711 acfg->klass_blob_hash = g_hash_table_new (NULL, NULL);
8712 acfg->method_blob_hash = g_hash_table_new (NULL, NULL);
8713 acfg->plt_entry_debug_sym_cache = g_hash_table_new (g_str_hash, g_str_equal);
8714 mono_mutex_init_recursive (&acfg->mutex);
8715
8716 return acfg;
8717 }
8718
8719 static void
8720 acfg_free (MonoAotCompile *acfg)
8721 {
8722 int i;
8723
8724 img_writer_destroy (acfg->w);
8725 for (i = 0; i < acfg->nmethods; ++i)
8726 if (acfg->cfgs [i])
8727 g_free (acfg->cfgs [i]);
8728 g_free (acfg->cfgs);
8729 g_free (acfg->static_linking_symbol);
8730 g_free (acfg->got_symbol);
8731 g_free (acfg->plt_symbol);
8732 g_ptr_array_free (acfg->methods, TRUE);
8733 g_ptr_array_free (acfg->got_patches, TRUE);
8734 g_ptr_array_free (acfg->image_table, TRUE);
8735 g_ptr_array_free (acfg->globals, TRUE);
8736 g_ptr_array_free (acfg->unwind_ops, TRUE);
8737 g_hash_table_destroy (acfg->method_indexes);
8738 g_hash_table_destroy (acfg->method_depth);
8739 g_hash_table_destroy (acfg->plt_offset_to_entry);
8740 for (i = 0; i < MONO_PATCH_INFO_NUM; ++i) {
8741 if (acfg->patch_to_plt_entry [i])
8742 g_hash_table_destroy (acfg->patch_to_plt_entry [i]);
8743 }
8744 g_free (acfg->patch_to_plt_entry);
8745 g_hash_table_destroy (acfg->patch_to_got_offset);
8746 g_hash_table_destroy (acfg->method_to_cfg);
8747 g_hash_table_destroy (acfg->token_info_hash);
8748 g_hash_table_destroy (acfg->method_to_pinvoke_import);
8749 g_hash_table_destroy (acfg->image_hash);
8750 g_hash_table_destroy (acfg->unwind_info_offsets);
8751 g_hash_table_destroy (acfg->method_label_hash);
8752 g_hash_table_destroy (acfg->export_names);
8753 g_hash_table_destroy (acfg->plt_entry_debug_sym_cache);
8754 g_hash_table_destroy (acfg->klass_blob_hash);
8755 g_hash_table_destroy (acfg->method_blob_hash);
8756 for (i = 0; i < MONO_PATCH_INFO_NUM; ++i)
8757 g_hash_table_destroy (acfg->patch_to_got_offset_by_type [i]);
8758 g_free (acfg->patch_to_got_offset_by_type);
8759 mono_mempool_destroy (acfg->mempool);
8760 g_free (acfg);
8761 }
8762
8763 int
8764 mono_compile_assembly (MonoAssembly *ass, guint32 opts, const char *aot_options)
8765 {
8766 MonoImage *image = ass->image;
8767 int i, res, all_sizes;
8768 MonoAotCompile *acfg;
8769 char *outfile_name, *tmp_outfile_name, *p;
8770 char llvm_stats_msg [256];
8771 TV_DECLARE (atv);
8772 TV_DECLARE (btv);
8773
8774 #if !defined(MONO_ARCH_GSHAREDVT_SUPPORTED) || !defined(ENABLE_GSHAREDVT)
8775 if (opts & MONO_OPT_GSHAREDVT) {
8776 fprintf (stderr, "-O=gsharedvt not supported on this platform.\n");
8777 exit (1);
8778 }
8779 #endif
8780
8781 printf ("Mono Ahead of Time compiler - compiling assembly %s\n", image->name);
8782
8783 acfg = acfg_create (ass, opts);
8784
8785 memset (&acfg->aot_opts, 0, sizeof (acfg->aot_opts));
8786 acfg->aot_opts.write_symbols = TRUE;
8787 acfg->aot_opts.ntrampolines = 1024;
8788 acfg->aot_opts.nrgctx_trampolines = 1024;
8789 acfg->aot_opts.nimt_trampolines = 128;
8790 acfg->aot_opts.nrgctx_fetch_trampolines = 128;
8791 acfg->aot_opts.ngsharedvt_arg_trampolines = 128;
8792 acfg->aot_opts.llvm_path = g_strdup ("");
8793 #ifdef MONOTOUCH
8794 acfg->aot_opts.use_trampolines_page = TRUE;
8795 #endif
8796
8797 mono_aot_parse_options (aot_options, &acfg->aot_opts);
8798
8799 if (acfg->aot_opts.static_link)
8800 acfg->aot_opts.autoreg = TRUE;
8801
8802 //acfg->aot_opts.print_skipped_methods = TRUE;
8803
8804 #ifndef MONO_ARCH_HAVE_FULL_AOT_TRAMPOLINES
8805 if (acfg->aot_opts.full_aot) {
8806 printf ("--aot=full is not supported on this platform.\n");
8807 return 1;
8808 }
8809 #endif
8810
8811 if (acfg->aot_opts.direct_pinvoke && !acfg->aot_opts.static_link) {
8812 fprintf (stderr, "The 'direct-pinvoke' AOT option also requires the 'static' AOT option.\n");
8813 exit (1);
8814 }
8815
8816 if (acfg->aot_opts.static_link)
8817 acfg->aot_opts.asm_writer = TRUE;
8818
8819 if (acfg->aot_opts.soft_debug) {
8820 MonoDebugOptions *opt = mini_get_debug_options ();
8821
8822 opt->mdb_optimizations = TRUE;
8823 opt->gen_seq_points = TRUE;
8824
8825 if (!mono_debug_enabled ()) {
8826 fprintf (stderr, "The soft-debug AOT option requires the --debug option.\n");
8827 return 1;
8828 }
8829 acfg->flags |= MONO_AOT_FILE_FLAG_DEBUG;
8830 }
8831
8832 if (mono_use_llvm) {
8833 acfg->llvm = TRUE;
8834 acfg->aot_opts.asm_writer = TRUE;
8835 acfg->flags |= MONO_AOT_FILE_FLAG_WITH_LLVM;
8836
8837 if (acfg->aot_opts.soft_debug) {
8838 fprintf (stderr, "The 'soft-debug' option is not supported when compiling with LLVM.\n");
8839 exit (1);
8840 }
8841 }
8842
8843 if (acfg->aot_opts.full_aot)
8844 acfg->flags |= MONO_AOT_FILE_FLAG_FULL_AOT;
8845
8846 if (acfg->aot_opts.instances_logfile_path) {
8847 acfg->instances_logfile = fopen (acfg->aot_opts.instances_logfile_path, "w");
8848 if (!acfg->instances_logfile) {
8849 fprintf (stderr, "Unable to create logfile: '%s'.\n", acfg->aot_opts.instances_logfile_path);
8850 exit (1);
8851 }
8852 }
8853
8854 load_profile_files (acfg);
8855
8856 acfg->num_trampolines [MONO_AOT_TRAMP_SPECIFIC] = acfg->aot_opts.full_aot ? acfg->aot_opts.ntrampolines : 0;
8857 #ifdef MONO_ARCH_GSHARED_SUPPORTED
8858 acfg->num_trampolines [MONO_AOT_TRAMP_STATIC_RGCTX] = acfg->aot_opts.full_aot ? acfg->aot_opts.nrgctx_trampolines : 0;
8859 #endif
8860 acfg->num_trampolines [MONO_AOT_TRAMP_IMT_THUNK] = acfg->aot_opts.full_aot ? acfg->aot_opts.nimt_trampolines : 0;
8861 #ifdef MONO_ARCH_GSHAREDVT_SUPPORTED
8862 if (acfg->opts & MONO_OPT_GSHAREDVT)
8863 acfg->num_trampolines [MONO_AOT_TRAMP_GSHAREDVT_ARG] = acfg->aot_opts.full_aot ? acfg->aot_opts.ngsharedvt_arg_trampolines : 0;
8864 #endif
8865
8866 acfg->temp_prefix = img_writer_get_temp_label_prefix (NULL);
8867
8868 arch_init (acfg);
8869
8870 acfg->got_symbol_base = g_strdup_printf ("mono_aot_%s_got", acfg->image->assembly->aname.name);
8871 acfg->plt_symbol = g_strdup_printf ("%smono_aot_%s_plt", acfg->llvm_label_prefix, acfg->image->assembly->aname.name);
8872 acfg->assembly_name_sym = g_strdup (acfg->image->assembly->aname.name);
8873
8874 /* Get rid of characters which cannot occur in symbols */
8875 for (p = acfg->got_symbol_base; *p; ++p) {
8876 if (!(isalnum (*p) || *p == '_'))
8877 *p = '_';
8878 }
8879 for (p = acfg->plt_symbol; *p; ++p) {
8880 if (!(isalnum (*p) || *p == '_'))
8881 *p = '_';
8882 }
8883 for (p = acfg->assembly_name_sym; *p; ++p) {
8884 if (!(isalnum (*p) || *p == '_'))
8885 *p = '_';
8886 }
8887
8888 acfg->method_index = 1;
8889
8890 // FIXME:
8891 /*
8892 if (acfg->aot_opts.full_aot)
8893 mono_set_partial_sharing_supported (TRUE);
8894 */
8895
8896 collect_methods (acfg);
8897
8898 acfg->cfgs_size = acfg->methods->len + 32;
8899 acfg->cfgs = g_new0 (MonoCompile*, acfg->cfgs_size);
8900
8901 /* PLT offset 0 is reserved for the PLT trampoline */
8902 acfg->plt_offset = 1;
8903
8904 #ifdef ENABLE_LLVM
8905 if (acfg->llvm) {
8906 llvm_acfg = acfg;
8907 mono_llvm_create_aot_module (acfg->got_symbol_base);
8908 }
8909 #endif
8910
8911 /* GOT offset 0 is reserved for the address of the current assembly */
8912 {
8913 MonoJumpInfo *ji;
8914
8915 ji = mono_mempool_alloc0 (acfg->mempool, sizeof (MonoAotCompile));
8916 ji->type = MONO_PATCH_INFO_IMAGE;
8917 ji->data.image = acfg->image;
8918
8919 get_got_offset (acfg, ji);
8920
8921 /* Slot 1 is reserved for the mscorlib got addr */
8922 ji = mono_mempool_alloc0 (acfg->mempool, sizeof (MonoAotCompile));
8923 ji->type = MONO_PATCH_INFO_MSCORLIB_GOT_ADDR;
8924 get_got_offset (acfg, ji);
8925
8926 /* This is very common */
8927 ji = mono_mempool_alloc0 (acfg->mempool, sizeof (MonoAotCompile));
8928 ji->type = MONO_PATCH_INFO_GC_CARD_TABLE_ADDR;
8929 get_got_offset (acfg, ji);
8930
8931 ji = mono_mempool_alloc0 (acfg->mempool, sizeof (MonoAotCompile));
8932 ji->type = MONO_PATCH_INFO_JIT_TLS_ID;
8933 get_got_offset (acfg, ji);
8934 }
8935
8936 TV_GETTIME (atv);
8937
8938 compile_methods (acfg);
8939
8940 TV_GETTIME (btv);
8941
8942 acfg->stats.jit_time = TV_ELAPSED (atv, btv);
8943
8944 TV_GETTIME (atv);
8945
8946 #ifdef ENABLE_LLVM
8947 if (acfg->llvm) {
8948 if (acfg->aot_opts.asm_only) {
8949 if (acfg->aot_opts.outfile) {
8950 acfg->tmpfname = g_strdup_printf ("%s", acfg->aot_opts.outfile);
8951 acfg->tmpbasename = g_strdup (acfg->tmpfname);
8952 } else {
8953 acfg->tmpbasename = g_strdup_printf ("%s", acfg->image->name);
8954 acfg->tmpfname = g_strdup_printf ("%s.s", acfg->tmpbasename);
8955 }
8956 } else {
8957 acfg->tmpbasename = g_strdup_printf ("%s", "temp");
8958 acfg->tmpfname = g_strdup_printf ("%s.s", acfg->tmpbasename);
8959 }
8960
8961 emit_llvm_file (acfg);
8962 }
8963 #endif
8964
8965 if (!acfg->aot_opts.asm_only && !acfg->aot_opts.asm_writer && bin_writer_supported ()) {
8966 if (acfg->aot_opts.outfile)
8967 outfile_name = g_strdup_printf ("%s", acfg->aot_opts.outfile);
8968 else
8969 outfile_name = g_strdup_printf ("%s%s", acfg->image->name, SHARED_EXT);
8970
8971 /*
8972 * Can't use g_file_open_tmp () as it will be deleted at exit, and
8973 * it might be in another file system so the rename () won't work.
8974 */
8975 tmp_outfile_name = g_strdup_printf ("%s.tmp", outfile_name);
8976
8977 acfg->fp = fopen (tmp_outfile_name, "w");
8978 if (!acfg->fp) {
8979 printf ("Unable to create temporary file '%s': %s\n", tmp_outfile_name, strerror (errno));
8980 return 1;
8981 }
8982
8983 acfg->w = img_writer_create (acfg->fp, TRUE);
8984 acfg->use_bin_writer = TRUE;
8985 } else {
8986 if (acfg->llvm) {
8987 /* Append to the .s file created by llvm */
8988 /* FIXME: Use multiple files instead */
8989 acfg->fp = fopen (acfg->tmpfname, "a+");
8990 } else {
8991 if (acfg->aot_opts.asm_only) {
8992 if (acfg->aot_opts.outfile)
8993 acfg->tmpfname = g_strdup_printf ("%s", acfg->aot_opts.outfile);
8994 else
8995 acfg->tmpfname = g_strdup_printf ("%s.s", acfg->image->name);
8996 acfg->fp = fopen (acfg->tmpfname, "w+");
8997 } else {
8998 int i = g_file_open_tmp ("mono_aot_XXXXXX", &acfg->tmpfname, NULL);
8999 acfg->fp = fdopen (i, "w+");
9000 }
9001 }
9002 if (acfg->fp == 0) {
9003 fprintf (stderr, "Unable to open file '%s': %s\n", acfg->tmpfname, strerror (errno));
9004 return 1;
9005 }
9006 acfg->w = img_writer_create (acfg->fp, FALSE);
9007
9008 tmp_outfile_name = NULL;
9009 outfile_name = NULL;
9010 }
9011
9012 acfg->got_symbol = g_strdup_printf ("%s%s", acfg->llvm_label_prefix, acfg->got_symbol_base);
9013
9014 /* Compute symbols for methods */
9015 for (i = 0; i < acfg->nmethods; ++i) {
9016 if (acfg->cfgs [i]) {
9017 MonoCompile *cfg = acfg->cfgs [i];
9018 int method_index = get_method_index (acfg, cfg->orig_method);
9019
9020 if (COMPILE_LLVM (cfg))
9021 cfg->asm_symbol = g_strdup_printf ("%s%s", acfg->llvm_label_prefix, cfg->llvm_method_name);
9022 else if (acfg->global_symbols)
9023 cfg->asm_symbol = get_debug_sym (cfg->method, "", acfg->method_label_hash);
9024 else
9025 cfg->asm_symbol = g_strdup_printf ("%s%sm_%x", acfg->temp_prefix, acfg->llvm_label_prefix, method_index);
9026 }
9027 }
9028
9029 if (acfg->aot_opts.dwarf_debug && acfg->aot_opts.asm_only && acfg->aot_opts.gnu_asm) {
9030 /*
9031 * CLANG supports GAS .file/.loc directives, so emit line number information this way
9032 * FIXME: CLANG only emits line number info for .loc directives followed by assembly, not
9033 * .byte directives.
9034 */
9035 //acfg->gas_line_numbers = TRUE;
9036 }
9037
9038 if (!acfg->aot_opts.nodebug || acfg->aot_opts.dwarf_debug) {
9039 if (acfg->aot_opts.dwarf_debug && !mono_debug_enabled ()) {
9040 fprintf (stderr, "The dwarf AOT option requires the --debug option.\n");
9041 return 1;
9042 }
9043 acfg->dwarf = mono_dwarf_writer_create (acfg->w, NULL, 0, FALSE, !acfg->gas_line_numbers);
9044 }
9045
9046 img_writer_emit_start (acfg->w);
9047
9048 if (acfg->dwarf)
9049 mono_dwarf_writer_emit_base_info (acfg->dwarf, g_path_get_basename (acfg->image->name), mono_unwind_get_cie_program ());
9050
9051 if (acfg->thumb_mixed) {
9052 char symbol [256];
9053 /*
9054 * This global symbol marks the end of THUMB code, and the beginning of ARM
9055 * code generated by our JIT.
9056 */
9057 sprintf (symbol, "thumb_end");
9058 emit_section_change (acfg, ".text", 0);
9059 emit_alignment (acfg, 8);
9060 emit_label (acfg, symbol);
9061 emit_zero_bytes (acfg, 16);
9062
9063 fprintf (acfg->fp, ".arm\n");
9064 }
9065
9066 emit_code (acfg);
9067
9068 emit_info (acfg);
9069
9070 emit_extra_methods (acfg);
9071
9072 emit_trampolines (acfg);
9073
9074 emit_class_name_table (acfg);
9075
9076 emit_got_info (acfg);
9077
9078 emit_exception_info (acfg);
9079
9080 emit_unwind_info (acfg);
9081
9082 emit_class_info (acfg);
9083
9084 emit_plt (acfg);
9085
9086 emit_image_table (acfg);
9087
9088 emit_got (acfg);
9089
9090 emit_file_info (acfg);
9091
9092 emit_blob (acfg);
9093
9094 emit_objc_selectors (acfg);
9095
9096 emit_globals (acfg);
9097
9098 emit_autoreg (acfg);
9099
9100 if (acfg->dwarf) {
9101 emit_dwarf_info (acfg);
9102 mono_dwarf_writer_close (acfg->dwarf);
9103 }
9104
9105 emit_mem_end (acfg);
9106
9107 if (acfg->need_pt_gnu_stack) {
9108 /* This is required so the .so doesn't have an executable stack */
9109 /* The bin writer already emits this */
9110 if (!acfg->use_bin_writer)
9111 fprintf (acfg->fp, "\n.section .note.GNU-stack,\"\",@progbits\n");
9112 }
9113
9114 TV_GETTIME (btv);
9115
9116 acfg->stats.gen_time = TV_ELAPSED (atv, btv);
9117
9118 if (acfg->llvm)
9119 g_assert (acfg->got_offset <= acfg->final_got_size);
9120
9121 if (acfg->llvm)
9122 sprintf (llvm_stats_msg, ", LLVM: %d (%d%%)", acfg->stats.llvm_count, acfg->stats.mcount ? (acfg->stats.llvm_count * 100) / acfg->stats.mcount : 100);
9123 else
9124 strcpy (llvm_stats_msg, "");
9125
9126 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;
9127
9128 printf ("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",
9129 acfg->stats.code_size, acfg->stats.code_size * 100 / all_sizes,
9130 acfg->stats.info_size, acfg->stats.info_size * 100 / all_sizes,
9131 acfg->stats.ex_info_size, acfg->stats.ex_info_size * 100 / all_sizes,
9132 acfg->stats.unwind_info_size, acfg->stats.unwind_info_size * 100 / all_sizes,
9133 acfg->stats.class_info_size, acfg->stats.class_info_size * 100 / all_sizes,
9134 acfg->stats.plt_size ? acfg->stats.plt_size : acfg->plt_offset, acfg->stats.plt_size ? acfg->stats.plt_size * 100 / all_sizes : 0,
9135 acfg->stats.got_info_size, acfg->stats.got_info_size * 100 / all_sizes,
9136 acfg->stats.offsets_size, acfg->stats.offsets_size * 100 / all_sizes,
9137 (int)(acfg->got_offset * sizeof (gpointer)));
9138 printf ("Compiled: %d/%d (%d%%)%s, No GOT slots: %d (%d%%), Direct calls: %d (%d%%)\n",
9139 acfg->stats.ccount, acfg->stats.mcount, acfg->stats.mcount ? (acfg->stats.ccount * 100) / acfg->stats.mcount : 100,
9140 llvm_stats_msg,
9141 acfg->stats.methods_without_got_slots, acfg->stats.mcount ? (acfg->stats.methods_without_got_slots * 100) / acfg->stats.mcount : 100,
9142 acfg->stats.direct_calls, acfg->stats.all_calls ? (acfg->stats.direct_calls * 100) / acfg->stats.all_calls : 100);
9143 if (acfg->stats.genericcount)
9144 printf ("%d methods are generic (%d%%)\n", acfg->stats.genericcount, acfg->stats.mcount ? (acfg->stats.genericcount * 100) / acfg->stats.mcount : 100);
9145 if (acfg->stats.abscount)
9146 printf ("%d methods contain absolute addresses (%d%%)\n", acfg->stats.abscount, acfg->stats.mcount ? (acfg->stats.abscount * 100) / acfg->stats.mcount : 100);
9147 if (acfg->stats.lmfcount)
9148 printf ("%d methods contain lmf pointers (%d%%)\n", acfg->stats.lmfcount, acfg->stats.mcount ? (acfg->stats.lmfcount * 100) / acfg->stats.mcount : 100);
9149 if (acfg->stats.ocount)
9150 printf ("%d methods have other problems (%d%%)\n", acfg->stats.ocount, acfg->stats.mcount ? (acfg->stats.ocount * 100) / acfg->stats.mcount : 100);
9151
9152 TV_GETTIME (atv);
9153 res = img_writer_emit_writeout (acfg->w);
9154 if (res != 0) {
9155 acfg_free (acfg);
9156 return res;
9157 }
9158 if (acfg->use_bin_writer) {
9159 int err = rename (tmp_outfile_name, outfile_name);
9160
9161 if (err) {
9162 printf ("Unable to rename '%s' to '%s': %s\n", tmp_outfile_name, outfile_name, strerror (errno));
9163 return 1;
9164 }
9165 } else {
9166 res = compile_asm (acfg);
9167 if (res != 0) {
9168 acfg_free (acfg);
9169 return res;
9170 }
9171 }
9172 TV_GETTIME (btv);
9173 acfg->stats.link_time = TV_ELAPSED (atv, btv);
9174
9175 if (acfg->aot_opts.stats) {
9176 int i;
9177
9178 printf ("GOT slot distribution:\n");
9179 for (i = 0; i < MONO_PATCH_INFO_NONE; ++i)
9180 if (acfg->stats.got_slot_types [i])
9181 printf ("\t%s: %d (%d)\n", get_patch_name (i), acfg->stats.got_slot_types [i], acfg->stats.got_slot_info_sizes [i]);
9182 }
9183
9184 printf ("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);
9185
9186 acfg_free (acfg);
9187
9188 return 0;
9189 }
9190
9191 #else
9192
9193 /* AOT disabled */
9194
9195 void*
9196 mono_aot_readonly_field_override (MonoClassField *field)
9197 {
9198 return NULL;
9199 }
9200
9201 int
9202 mono_compile_assembly (MonoAssembly *ass, guint32 opts, const char *aot_options)
9203 {
9204 return 0;
9205 }
9206
9207 #endif
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