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[Facades] Use the Open.snk key for the System.ValueTuple facade (#4173)
[mono-project.git] / mono / mini / aot-runtime.c
blob23a3357d3358ecd018067e870058aad681776f45
1 /*
2 * aot-runtime.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.
11 * Licensed under the MIT license. See LICENSE file in the project root for full license information.
12 */
13
14 #include "config.h"
15 #include <sys/types.h>
16 #ifdef HAVE_UNISTD_H
17 #include <unistd.h>
18 #endif
19 #include <fcntl.h>
20 #include <string.h>
21 #ifdef HAVE_SYS_MMAN_H
22 #include <sys/mman.h>
23 #endif
24
25 #if HOST_WIN32
26 #include <winsock2.h>
27 #include <windows.h>
28 #endif
29
30 #ifdef HAVE_EXECINFO_H
31 #include <execinfo.h>
32 #endif
33
34 #include <errno.h>
35 #include <sys/stat.h>
36
37 #ifdef HAVE_SYS_WAIT_H
38 #include <sys/wait.h> /* for WIFEXITED, WEXITSTATUS */
39 #endif
40
41 #include <mono/metadata/abi-details.h>
42 #include <mono/metadata/tabledefs.h>
43 #include <mono/metadata/class.h>
44 #include <mono/metadata/object.h>
45 #include <mono/metadata/tokentype.h>
46 #include <mono/metadata/appdomain.h>
47 #include <mono/metadata/debug-helpers.h>
48 #include <mono/metadata/assembly.h>
49 #include <mono/metadata/metadata-internals.h>
50 #include <mono/metadata/marshal.h>
51 #include <mono/metadata/gc-internals.h>
52 #include <mono/metadata/threads-types.h>
53 #include <mono/metadata/mono-endian.h>
54 #include <mono/utils/mono-logger-internals.h>
55 #include <mono/utils/mono-mmap.h>
56 #include <mono/utils/mono-compiler.h>
57 #include <mono/utils/mono-counters.h>
58 #include <mono/utils/mono-digest.h>
59 #include <mono/utils/mono-threads-coop.h>
60
61 #include "mini.h"
62 #include "seq-points.h"
63 #include "version.h"
64 #include "debugger-agent.h"
65 #include "aot-compiler.h"
66 #include "jit-icalls.h"
67
68 #ifndef DISABLE_AOT
69
70 #ifdef TARGET_OSX
71 #define ENABLE_AOT_CACHE
72 #endif
73
74 /* Number of got entries shared between the JIT and LLVM GOT */
75 #define N_COMMON_GOT_ENTRIES 10
76
77 #define ALIGN_TO(val,align) ((((guint64)val) + ((align) - 1)) & ~((align) - 1))
78 #define ALIGN_PTR_TO(ptr,align) (gpointer)((((gssize)(ptr)) + (align - 1)) & (~(align - 1)))
79 #define ROUND_DOWN(VALUE,SIZE) ((VALUE) & ~((SIZE) - 1))
80
81 typedef struct {
82 int method_index;
83 MonoJitInfo *jinfo;
84 } JitInfoMap;
85
86 typedef struct MonoAotModule {
87 char *aot_name;
88 /* Pointer to the Global Offset Table */
89 gpointer *got;
90 gpointer *llvm_got;
91 gpointer *shared_got;
92 GHashTable *name_cache;
93 GHashTable *extra_methods;
94 /* Maps methods to their code */
95 GHashTable *method_to_code;
96 /* Maps pointers into the method info to the methods themselves */
97 GHashTable *method_ref_to_method;
98 MonoAssemblyName *image_names;
99 char **image_guids;
100 MonoAssembly *assembly;
101 MonoImage **image_table;
102 guint32 image_table_len;
103 gboolean out_of_date;
104 gboolean plt_inited;
105 gboolean got_initializing;
106 guint8 *mem_begin;
107 guint8 *mem_end;
108 guint8 *jit_code_start;
109 guint8 *jit_code_end;
110 guint8 *llvm_code_start;
111 guint8 *llvm_code_end;
112 guint8 *plt;
113 guint8 *plt_end;
114 guint8 *blob;
115 /* Maps method indexes to their code */
116 gpointer *methods;
117 /* Sorted array of method addresses */
118 gpointer *sorted_methods;
119 /* Method indexes for each method in sorted_methods */
120 int *sorted_method_indexes;
121 /* The length of the two tables above */
122 int sorted_methods_len;
123 guint32 *method_info_offsets;
124 guint32 *ex_info_offsets;
125 guint32 *class_info_offsets;
126 guint32 *got_info_offsets;
127 guint32 *llvm_got_info_offsets;
128 guint32 *methods_loaded;
129 guint16 *class_name_table;
130 guint32 *extra_method_table;
131 guint32 *extra_method_info_offsets;
132 guint32 *unbox_trampolines;
133 guint32 *unbox_trampolines_end;
134 guint32 *unbox_trampoline_addresses;
135 guint8 *unwind_info;
136
137 /* Points to the mono EH data created by LLVM */
138 guint8 *mono_eh_frame;
139
140 /* Points to the data tables if MONO_AOT_FILE_FLAG_SEPARATE_DATA is set */
141 gpointer tables [MONO_AOT_TABLE_NUM];
142 /* Points to the trampolines */
143 guint8 *trampolines [MONO_AOT_TRAMP_NUM];
144 /* The first unused trampoline of each kind */
145 guint32 trampoline_index [MONO_AOT_TRAMP_NUM];
146
147 gboolean use_page_trampolines;
148
149 MonoAotFileInfo info;
150
151 gpointer *globals;
152 MonoDl *sofile;
153
154 JitInfoMap *async_jit_info_table;
155 mono_mutex_t mutex;
156 } MonoAotModule;
157
158 typedef struct {
159 void *next;
160 unsigned char *trampolines;
161 unsigned char *trampolines_end;
162 } TrampolinePage;
163
164 static GHashTable *aot_modules;
165 #define mono_aot_lock() mono_os_mutex_lock (&aot_mutex)
166 #define mono_aot_unlock() mono_os_mutex_unlock (&aot_mutex)
167 static mono_mutex_t aot_mutex;
168
169 /*
170 * Maps assembly names to the mono_aot_module_<NAME>_info symbols in the
171 * AOT modules registered by mono_aot_register_module ().
172 */
173 static GHashTable *static_aot_modules;
174
175 /*
176 * Maps MonoJitInfo* to the aot module they belong to, this can be different
177 * from ji->method->klass->image's aot module for generic instances.
178 */
179 static GHashTable *ji_to_amodule;
180
181 /*
182 * Whenever to AOT compile loaded assemblies on demand and store them in
183 * a cache.
184 */
185 static gboolean enable_aot_cache = FALSE;
186
187 static gboolean mscorlib_aot_loaded;
188
189 /* For debugging */
190 static gint32 mono_last_aot_method = -1;
191
192 static gboolean make_unreadable = FALSE;
193 static guint32 name_table_accesses = 0;
194 static guint32 n_pagefaults = 0;
195
196 /* Used to speed-up find_aot_module () */
197 static gsize aot_code_low_addr = (gssize)-1;
198 static gsize aot_code_high_addr = 0;
199
200 /* Stats */
201 static gint32 async_jit_info_size;
202
203 static GHashTable *aot_jit_icall_hash;
204
205 #ifdef MONOTOUCH
206 #define USE_PAGE_TRAMPOLINES ((MonoAotModule*)mono_defaults.corlib->aot_module)->use_page_trampolines
207 #else
208 #define USE_PAGE_TRAMPOLINES 0
209 #endif
210
211 #define mono_aot_page_lock() mono_os_mutex_lock (&aot_page_mutex)
212 #define mono_aot_page_unlock() mono_os_mutex_unlock (&aot_page_mutex)
213 static mono_mutex_t aot_page_mutex;
214
215 static MonoAotModule *mscorlib_aot_module;
216
217 /* Embedding API hooks to load the AOT data for AOT images compiled with MONO_AOT_FILE_FLAG_SEPARATE_DATA */
218 static MonoLoadAotDataFunc aot_data_load_func;
219 static MonoFreeAotDataFunc aot_data_free_func;
220 static gpointer aot_data_func_user_data;
221
222 static void
223 init_plt (MonoAotModule *info);
224
225 static void
226 compute_llvm_code_range (MonoAotModule *amodule, guint8 **code_start, guint8 **code_end);
227
228 static gboolean
229 init_method (MonoAotModule *amodule, guint32 method_index, MonoMethod *method, MonoClass *init_class, MonoGenericContext *context, MonoError *error);
230
231 static MonoJumpInfo*
232 decode_patches (MonoAotModule *amodule, MonoMemPool *mp, int n_patches, gboolean llvm, guint32 *got_offsets);
233
234 static inline void
235 amodule_lock (MonoAotModule *amodule)
236 {
237 mono_os_mutex_lock (&amodule->mutex);
238 }
239
240 static inline void
241 amodule_unlock (MonoAotModule *amodule)
242 {
243 mono_os_mutex_unlock (&amodule->mutex);
244 }
245
246 /*
247 * load_image:
248 *
249 * Load one of the images referenced by AMODULE. Returns NULL if the image is not
250 * found, and sets @error for what happened
251 */
252 static MonoImage *
253 load_image (MonoAotModule *amodule, int index, MonoError *error)
254 {
255 MonoAssembly *assembly;
256 MonoImageOpenStatus status;
257
258 g_assert (index < amodule->image_table_len);
259
260 mono_error_init (error);
261
262 if (amodule->image_table [index])
263 return amodule->image_table [index];
264 if (amodule->out_of_date) {
265 mono_error_set_bad_image_name (error, amodule->aot_name, "Image out of date");
266 return NULL;
267 }
268
269 assembly = mono_assembly_load (&amodule->image_names [index], amodule->assembly->basedir, &status);
270 if (!assembly) {
271 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: module %s is unusable because dependency %s is not found.", amodule->aot_name, amodule->image_names [index].name);
272 mono_error_set_bad_image_name (error, amodule->aot_name, "module is unusable because dependency %s is not found (error %d).\n", amodule->image_names [index].name, status);
273 amodule->out_of_date = TRUE;
274 return NULL;
275 }
276
277 if (strcmp (assembly->image->guid, amodule->image_guids [index])) {
278 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: module %s is unusable (GUID of dependent assembly %s doesn't match (expected '%s', got '%s').", amodule->aot_name, amodule->image_names [index].name, amodule->image_guids [index], assembly->image->guid);
279 mono_error_set_bad_image_name (error, amodule->aot_name, "module is unusable (GUID of dependent assembly %s doesn't match (expected '%s', got '%s').", amodule->image_names [index].name, amodule->image_guids [index], assembly->image->guid);
280 amodule->out_of_date = TRUE;
281 return NULL;
282 }
283
284 amodule->image_table [index] = assembly->image;
285 return assembly->image;
286 }
287
288 static inline gint32
289 decode_value (guint8 *ptr, guint8 **rptr)
290 {
291 guint8 b = *ptr;
292 gint32 len;
293
294 if ((b & 0x80) == 0){
295 len = b;
296 ++ptr;
297 } else if ((b & 0x40) == 0){
298 len = ((b & 0x3f) << 8 | ptr [1]);
299 ptr += 2;
300 } else if (b != 0xff) {
301 len = ((b & 0x1f) << 24) |
302 (ptr [1] << 16) |
303 (ptr [2] << 8) |
304 ptr [3];
305 ptr += 4;
306 }
307 else {
308 len = (ptr [1] << 24) | (ptr [2] << 16) | (ptr [3] << 8) | ptr [4];
309 ptr += 5;
310 }
311 if (rptr)
312 *rptr = ptr;
313
314 //printf ("DECODE: %d.\n", len);
315 return len;
316 }
317
318 /*
319 * mono_aot_get_offset:
320 *
321 * Decode an offset table emitted by emit_offset_table (), returning the INDEXth
322 * entry.
323 */
324 static guint32
325 mono_aot_get_offset (guint32 *table, int index)
326 {
327 int i, group, ngroups, index_entry_size;
328 int start_offset, offset, group_size;
329 guint8 *data_start, *p;
330 guint32 *index32 = NULL;
331 guint16 *index16 = NULL;
332
333 /* noffsets = table [0]; */
334 group_size = table [1];
335 ngroups = table [2];
336 index_entry_size = table [3];
337 group = index / group_size;
338
339 if (index_entry_size == 2) {
340 index16 = (guint16*)&table [4];
341 data_start = (guint8*)&index16 [ngroups];
342 p = data_start + index16 [group];
343 } else {
344 index32 = (guint32*)&table [4];
345 data_start = (guint8*)&index32 [ngroups];
346 p = data_start + index32 [group];
347 }
348
349 /* offset will contain the value of offsets [group * group_size] */
350 offset = start_offset = decode_value (p, &p);
351 for (i = group * group_size + 1; i <= index; ++i) {
352 offset += decode_value (p, &p);
353 }
354
355 //printf ("Offset lookup: %d -> %d, start=%d, p=%d\n", index, offset, start_offset, table [3 + group]);
356
357 return offset;
358 }
359
360 static MonoMethod*
361 decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf, MonoError *error);
362
363 static MonoClass*
364 decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf, MonoError *error);
365
366 static MonoType*
367 decode_type (MonoAotModule *module, guint8 *buf, guint8 **endbuf, MonoError *error);
368
369 static MonoGenericInst*
370 decode_generic_inst (MonoAotModule *module, guint8 *buf, guint8 **endbuf, MonoError *error)
371 {
372 int type_argc, i;
373 MonoType **type_argv;
374 MonoGenericInst *inst;
375 guint8 *p = buf;
376
377 mono_error_init (error);
378 type_argc = decode_value (p, &p);
379 type_argv = g_new0 (MonoType*, type_argc);
380
381 for (i = 0; i < type_argc; ++i) {
382 MonoClass *pclass = decode_klass_ref (module, p, &p, error);
383 if (!pclass) {
384 g_free (type_argv);
385 return NULL;
386 }
387 type_argv [i] = &pclass->byval_arg;
388 }
389
390 inst = mono_metadata_get_generic_inst (type_argc, type_argv);
391 g_free (type_argv);
392
393 *endbuf = p;
394
395 return inst;
396 }
397
398 static gboolean
399 decode_generic_context (MonoAotModule *module, MonoGenericContext *ctx, guint8 *buf, guint8 **endbuf, MonoError *error)
400 {
401 guint8 *p = buf;
402 guint8 *p2;
403 int argc;
404 mono_error_init (error);
405
406 p2 = p;
407 argc = decode_value (p, &p);
408 if (argc) {
409 p = p2;
410 ctx->class_inst = decode_generic_inst (module, p, &p, error);
411 if (!ctx->class_inst)
412 return FALSE;
413 }
414 p2 = p;
415 argc = decode_value (p, &p);
416 if (argc) {
417 p = p2;
418 ctx->method_inst = decode_generic_inst (module, p, &p, error);
419 if (!ctx->method_inst)
420 return FALSE;
421 }
422
423 *endbuf = p;
424 return TRUE;
425 }
426
427 static MonoClass*
428 decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf, MonoError *error)
429 {
430 MonoImage *image;
431 MonoClass *klass = NULL, *eklass;
432 guint32 token, rank, idx;
433 guint8 *p = buf;
434 int reftype;
435
436 mono_error_init (error);
437 reftype = decode_value (p, &p);
438 if (reftype == 0) {
439 *endbuf = p;
440 mono_error_set_bad_image_name (error, module->aot_name, "Decoding a null class ref");
441 return NULL;
442 }
443
444 switch (reftype) {
445 case MONO_AOT_TYPEREF_TYPEDEF_INDEX:
446 idx = decode_value (p, &p);
447 image = load_image (module, 0, error);
448 if (!image)
449 return NULL;
450 klass = mono_class_get_checked (image, MONO_TOKEN_TYPE_DEF + idx, error);
451 break;
452 case MONO_AOT_TYPEREF_TYPEDEF_INDEX_IMAGE:
453 idx = decode_value (p, &p);
454 image = load_image (module, decode_value (p, &p), error);
455 if (!image)
456 return NULL;
457 klass = mono_class_get_checked (image, MONO_TOKEN_TYPE_DEF + idx, error);
458 break;
459 case MONO_AOT_TYPEREF_TYPESPEC_TOKEN:
460 token = decode_value (p, &p);
461 image = module->assembly->image;
462 if (!image) {
463 mono_error_set_bad_image_name (error, module->aot_name, "No image associated with the aot module");
464 return NULL;
465 }
466 klass = mono_class_get_checked (image, token, error);
467 break;
468 case MONO_AOT_TYPEREF_GINST: {
469 MonoClass *gclass;
470 MonoGenericContext ctx;
471 MonoType *type;
472
473 gclass = decode_klass_ref (module, p, &p, error);
474 if (!gclass)
475 return NULL;
476 g_assert (mono_class_is_gtd (gclass));
477
478 memset (&ctx, 0, sizeof (ctx));
479 ctx.class_inst = decode_generic_inst (module, p, &p, error);
480 if (!ctx.class_inst)
481 return NULL;
482 type = mono_class_inflate_generic_type_checked (&gclass->byval_arg, &ctx, error);
483 if (!type)
484 return NULL;
485 klass = mono_class_from_mono_type (type);
486 mono_metadata_free_type (type);
487 break;
488 }
489 case MONO_AOT_TYPEREF_VAR: {
490 MonoType *t = NULL;
491 MonoGenericContainer *container = NULL;
492 gboolean has_constraint = decode_value (p, &p);
493
494 if (has_constraint) {
495 MonoClass *par_klass;
496 MonoType *gshared_constraint;
497
498 gshared_constraint = decode_type (module, p, &p, error);
499 if (!gshared_constraint)
500 return NULL;
501
502 par_klass = decode_klass_ref (module, p, &p, error);
503 if (!par_klass)
504 return NULL;
505
506 t = mini_get_shared_gparam (&par_klass->byval_arg, gshared_constraint);
507 klass = mono_class_from_mono_type (t);
508 } else {
509 int type = decode_value (p, &p);
510 int num = decode_value (p, &p);
511 gboolean is_not_anonymous = decode_value (p, &p);
512
513 if (is_not_anonymous) {
514 gboolean is_method = decode_value (p, &p);
515
516 if (is_method) {
517 MonoMethod *method_def;
518 g_assert (type == MONO_TYPE_MVAR);
519 method_def = decode_resolve_method_ref (module, p, &p, error);
520 if (!method_def)
521 return NULL;
522
523 container = mono_method_get_generic_container (method_def);
524 } else {
525 MonoClass *class_def;
526 g_assert (type == MONO_TYPE_VAR);
527 class_def = decode_klass_ref (module, p, &p, error);
528 if (!class_def)
529 return NULL;
530
531 container = mono_class_try_get_generic_container (class_def); //FIXME is this a case for a try_get?
532 }
533 } else {
534 // We didn't decode is_method, so we have to infer it from type enum.
535 container = get_anonymous_container_for_image (module->assembly->image, type == MONO_TYPE_MVAR);
536 }
537
538 t = g_new0 (MonoType, 1);
539 t->type = (MonoTypeEnum)type;
540 if (is_not_anonymous) {
541 t->data.generic_param = mono_generic_container_get_param (container, num);
542 } else {
543 /* Anonymous */
544 MonoGenericParam *par = (MonoGenericParam*)mono_image_alloc0 (module->assembly->image, sizeof (MonoGenericParamFull));
545 par->owner = container;
546 par->num = num;
547 t->data.generic_param = par;
548 ((MonoGenericParamFull*)par)->info.name = make_generic_name_string (module->assembly->image, num);
549 }
550 // FIXME: Maybe use types directly to avoid
551 // the overhead of creating MonoClass-es
552 klass = mono_class_from_mono_type (t);
553
554 g_free (t);
555 }
556 break;
557 }
558 case MONO_AOT_TYPEREF_ARRAY:
559 /* Array */
560 rank = decode_value (p, &p);
561 eklass = decode_klass_ref (module, p, &p, error);
562 if (!eklass)
563 return NULL;
564 klass = mono_array_class_get (eklass, rank);
565 break;
566 case MONO_AOT_TYPEREF_PTR: {
567 MonoType *t;
568
569 t = decode_type (module, p, &p, error);
570 if (!t)
571 return NULL;
572 klass = mono_class_from_mono_type (t);
573 g_free (t);
574 break;
575 }
576 case MONO_AOT_TYPEREF_BLOB_INDEX: {
577 guint32 offset = decode_value (p, &p);
578 guint8 *p2;
579
580 p2 = module->blob + offset;
581 klass = decode_klass_ref (module, p2, &p2, error);
582 break;
583 }
584 default:
585 mono_error_set_bad_image_name (error, module->aot_name, "Invalid klass reftype %d", reftype);
586 }
587 //g_assert (klass);
588 //printf ("BLA: %s\n", mono_type_full_name (&klass->byval_arg));
589 *endbuf = p;
590 return klass;
591 }
592
593 static MonoClassField*
594 decode_field_info (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
595 {
596 MonoError error;
597 MonoClass *klass = decode_klass_ref (module, buf, &buf, &error);
598 guint32 token;
599 guint8 *p = buf;
600
601 if (!klass) {
602 mono_error_cleanup (&error); /* FIXME don't swallow the error */
603 return NULL;
604 }
605
606 token = MONO_TOKEN_FIELD_DEF + decode_value (p, &p);
607
608 *endbuf = p;
609
610 return mono_class_get_field (klass, token);
611 }
612
613 /*
614 * Parse a MonoType encoded by encode_type () in aot-compiler.c. Return malloc-ed
615 * memory.
616 */
617 static MonoType*
618 decode_type (MonoAotModule *module, guint8 *buf, guint8 **endbuf, MonoError *error)
619 {
620 guint8 *p = buf;
621 MonoType *t;
622
623 t = (MonoType *)g_malloc0 (sizeof (MonoType));
624 mono_error_init (error);
625
626 while (TRUE) {
627 if (*p == MONO_TYPE_PINNED) {
628 t->pinned = TRUE;
629 ++p;
630 } else if (*p == MONO_TYPE_BYREF) {
631 t->byref = TRUE;
632 ++p;
633 } else {
634 break;
635 }
636 }
637
638 t->type = (MonoTypeEnum)*p;
639 ++p;
640
641 switch (t->type) {
642 case MONO_TYPE_VOID:
643 case MONO_TYPE_BOOLEAN:
644 case MONO_TYPE_CHAR:
645 case MONO_TYPE_I1:
646 case MONO_TYPE_U1:
647 case MONO_TYPE_I2:
648 case MONO_TYPE_U2:
649 case MONO_TYPE_I4:
650 case MONO_TYPE_U4:
651 case MONO_TYPE_I8:
652 case MONO_TYPE_U8:
653 case MONO_TYPE_R4:
654 case MONO_TYPE_R8:
655 case MONO_TYPE_I:
656 case MONO_TYPE_U:
657 case MONO_TYPE_STRING:
658 case MONO_TYPE_OBJECT:
659 case MONO_TYPE_TYPEDBYREF:
660 break;
661 case MONO_TYPE_VALUETYPE:
662 case MONO_TYPE_CLASS:
663 t->data.klass = decode_klass_ref (module, p, &p, error);
664 if (!t->data.klass)
665 goto fail;
666 break;
667 case MONO_TYPE_SZARRAY:
668 t->data.klass = decode_klass_ref (module, p, &p, error);
669
670 if (!t->data.klass)
671 goto fail;
672 break;
673 case MONO_TYPE_PTR:
674 t->data.type = decode_type (module, p, &p, error);
675 if (!t->data.type)
676 goto fail;
677 break;
678 case MONO_TYPE_GENERICINST: {
679 MonoClass *gclass;
680 MonoGenericContext ctx;
681 MonoType *type;
682 MonoClass *klass;
683
684 gclass = decode_klass_ref (module, p, &p, error);
685 if (!gclass)
686 goto fail;
687 g_assert (mono_class_is_gtd (gclass));
688
689 memset (&ctx, 0, sizeof (ctx));
690 ctx.class_inst = decode_generic_inst (module, p, &p, error);
691 if (!ctx.class_inst)
692 goto fail;
693 type = mono_class_inflate_generic_type_checked (&gclass->byval_arg, &ctx, error);
694 if (!type)
695 goto fail;
696 klass = mono_class_from_mono_type (type);
697 t->data.generic_class = mono_class_get_generic_class (klass);
698 break;
699 }
700 case MONO_TYPE_ARRAY: {
701 MonoArrayType *array;
702 int i;
703
704 // FIXME: memory management
705 array = g_new0 (MonoArrayType, 1);
706 array->eklass = decode_klass_ref (module, p, &p, error);
707 if (!array->eklass)
708 goto fail;
709 array->rank = decode_value (p, &p);
710 array->numsizes = decode_value (p, &p);
711
712 if (array->numsizes)
713 array->sizes = (int *)g_malloc0 (sizeof (int) * array->numsizes);
714 for (i = 0; i < array->numsizes; ++i)
715 array->sizes [i] = decode_value (p, &p);
716
717 array->numlobounds = decode_value (p, &p);
718 if (array->numlobounds)
719 array->lobounds = (int *)g_malloc0 (sizeof (int) * array->numlobounds);
720 for (i = 0; i < array->numlobounds; ++i)
721 array->lobounds [i] = decode_value (p, &p);
722 t->data.array = array;
723 break;
724 }
725 case MONO_TYPE_VAR:
726 case MONO_TYPE_MVAR: {
727 MonoClass *klass = decode_klass_ref (module, p, &p, error);
728 if (!klass)
729 goto fail;
730 t->data.generic_param = klass->byval_arg.data.generic_param;
731 break;
732 }
733 default:
734 mono_error_set_bad_image_name (error, module->aot_name, "Invalid encoded type %d", t->type);
735 goto fail;
736 }
737
738 *endbuf = p;
739
740 return t;
741 fail:
742 g_free (t);
743 return NULL;
744 }
745
746 // FIXME: Error handling, memory management
747
748 static MonoMethodSignature*
749 decode_signature_with_target (MonoAotModule *module, MonoMethodSignature *target, guint8 *buf, guint8 **endbuf)
750 {
751 MonoError error;
752 MonoMethodSignature *sig;
753 guint32 flags;
754 int i, gen_param_count = 0, param_count, call_conv;
755 guint8 *p = buf;
756 gboolean hasthis, explicit_this, has_gen_params;
757
758 flags = *p;
759 p ++;
760 has_gen_params = (flags & 0x10) != 0;
761 hasthis = (flags & 0x20) != 0;
762 explicit_this = (flags & 0x40) != 0;
763 call_conv = flags & 0x0F;
764
765 if (has_gen_params)
766 gen_param_count = decode_value (p, &p);
767 param_count = decode_value (p, &p);
768 if (target && param_count != target->param_count)
769 return NULL;
770 sig = (MonoMethodSignature *)g_malloc0 (MONO_SIZEOF_METHOD_SIGNATURE + param_count * sizeof (MonoType *));
771 sig->param_count = param_count;
772 sig->sentinelpos = -1;
773 sig->hasthis = hasthis;
774 sig->explicit_this = explicit_this;
775 sig->call_convention = call_conv;
776 sig->generic_param_count = gen_param_count;
777 sig->ret = decode_type (module, p, &p, &error);
778 if (!sig->ret)
779 goto fail;
780 for (i = 0; i < param_count; ++i) {
781 if (*p == MONO_TYPE_SENTINEL) {
782 g_assert (sig->call_convention == MONO_CALL_VARARG);
783 sig->sentinelpos = i;
784 p ++;
785 }
786 sig->params [i] = decode_type (module, p, &p, &error);
787 if (!sig->params [i])
788 goto fail;
789 }
790
791 if (sig->call_convention == MONO_CALL_VARARG && sig->sentinelpos == -1)
792 sig->sentinelpos = sig->param_count;
793
794 *endbuf = p;
795
796 return sig;
797 fail:
798 mono_error_cleanup (&error); /* FIXME don't swallow the error */
799 g_free (sig);
800 return NULL;
801 }
802
803 static MonoMethodSignature*
804 decode_signature (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
805 {
806 return decode_signature_with_target (module, NULL, buf, endbuf);
807 }
808
809 static gboolean
810 sig_matches_target (MonoAotModule *module, MonoMethod *target, guint8 *buf, guint8 **endbuf)
811 {
812 MonoMethodSignature *sig;
813 gboolean res;
814 guint8 *p = buf;
815
816 sig = decode_signature_with_target (module, mono_method_signature (target), p, &p);
817 res = sig && mono_metadata_signature_equal (mono_method_signature (target), sig);
818 g_free (sig);
819 *endbuf = p;
820 return res;
821 }
822
823 /* Stores information returned by decode_method_ref () */
824 typedef struct {
825 MonoImage *image;
826 guint32 token;
827 MonoMethod *method;
828 gboolean no_aot_trampoline;
829 } MethodRef;
830
831 /*
832 * decode_method_ref_with_target:
833 *
834 * Decode a method reference, storing the image/token into a MethodRef structure.
835 * This avoids loading metadata for the method if the caller does not need it. If the method has
836 * no token, then it is loaded from metadata and ref->method is set to the method instance.
837 * If TARGET is non-NULL, abort decoding if it can be determined that the decoded method
838 * couldn't resolve to TARGET, and return FALSE.
839 * There are some kinds of method references which only support a non-null TARGET.
840 * This means that its not possible to decode this into a method, only to check
841 * that the method reference matches a given method. This is normally not a problem
842 * as these wrappers only occur in the extra_methods table, where we already have
843 * a method we want to lookup.
844 *
845 * If there was a decoding error, we return FALSE and set @error
846 */
847 static gboolean
848 decode_method_ref_with_target (MonoAotModule *module, MethodRef *ref, MonoMethod *target, guint8 *buf, guint8 **endbuf, MonoError *error)
849 {
850 guint32 image_index, value;
851 MonoImage *image = NULL;
852 guint8 *p = buf;
853
854 memset (ref, 0, sizeof (MethodRef));
855 mono_error_init (error);
856
857 value = decode_value (p, &p);
858 image_index = value >> 24;
859
860 if (image_index == MONO_AOT_METHODREF_NO_AOT_TRAMPOLINE) {
861 ref->no_aot_trampoline = TRUE;
862 value = decode_value (p, &p);
863 image_index = value >> 24;
864 }
865
866 if (image_index < MONO_AOT_METHODREF_MIN || image_index == MONO_AOT_METHODREF_METHODSPEC || image_index == MONO_AOT_METHODREF_GINST) {
867 if (target && target->wrapper_type) {
868 return FALSE;
869 }
870 }
871
872 if (image_index == MONO_AOT_METHODREF_WRAPPER) {
873 WrapperInfo *info;
874 guint32 wrapper_type;
875
876 wrapper_type = decode_value (p, &p);
877
878 if (target && target->wrapper_type != wrapper_type)
879 return FALSE;
880
881 /* Doesn't matter */
882 image = mono_defaults.corlib;
883
884 switch (wrapper_type) {
885 #ifndef DISABLE_REMOTING
886 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK: {
887 MonoMethod *m = decode_resolve_method_ref (module, p, &p, error);
888 if (!m)
889 return FALSE;
890 mono_class_init (m->klass);
891 if (mono_aot_only)
892 ref->method = m;
893 else
894 ref->method = mono_marshal_get_remoting_invoke_with_check (m);
895 break;
896 }
897 case MONO_WRAPPER_PROXY_ISINST: {
898 MonoClass *klass = decode_klass_ref (module, p, &p, error);
899 if (!klass)
900 return FALSE;
901 ref->method = mono_marshal_get_proxy_cancast (klass);
902 break;
903 }
904 case MONO_WRAPPER_LDFLD:
905 case MONO_WRAPPER_LDFLDA:
906 case MONO_WRAPPER_STFLD: {
907 MonoClass *klass = decode_klass_ref (module, p, &p, error);
908 if (!klass)
909 return FALSE;
910 if (wrapper_type == MONO_WRAPPER_LDFLD)
911 ref->method = mono_marshal_get_ldfld_wrapper (&klass->byval_arg);
912 else if (wrapper_type == MONO_WRAPPER_LDFLDA)
913 ref->method = mono_marshal_get_ldflda_wrapper (&klass->byval_arg);
914 else if (wrapper_type == MONO_WRAPPER_STFLD)
915 ref->method = mono_marshal_get_stfld_wrapper (&klass->byval_arg);
916 else {
917 mono_error_set_bad_image_name (error, module->aot_name, "Unknown AOT wrapper type %d", wrapper_type);
918 return FALSE;
919 }
920 break;
921 }
922 #endif
923 case MONO_WRAPPER_ALLOC: {
924 int atype = decode_value (p, &p);
925 ManagedAllocatorVariant variant =
926 mono_profiler_get_events () & MONO_PROFILE_ALLOCATIONS ?
927 MANAGED_ALLOCATOR_SLOW_PATH : MANAGED_ALLOCATOR_REGULAR;
928
929 ref->method = mono_gc_get_managed_allocator_by_type (atype, variant);
930 /* Try to fallback to the slow path version */
931 if (!ref->method && variant == MANAGED_ALLOCATOR_REGULAR)
932 ref->method = mono_gc_get_managed_allocator_by_type (atype, MANAGED_ALLOCATOR_SLOW_PATH);
933 if (!ref->method) {
934 mono_error_set_bad_image_name (error, module->aot_name, "Error: No managed allocator, but we need one for AOT.\nAre you using non-standard GC options?\n");
935 return FALSE;
936 }
937 break;
938 }
939 case MONO_WRAPPER_WRITE_BARRIER: {
940 ref->method = mono_gc_get_write_barrier ();
941 break;
942 }
943 case MONO_WRAPPER_STELEMREF: {
944 int subtype = decode_value (p, &p);
945
946 if (subtype == WRAPPER_SUBTYPE_NONE) {
947 ref->method = mono_marshal_get_stelemref ();
948 } else if (subtype == WRAPPER_SUBTYPE_VIRTUAL_STELEMREF) {
949 int kind;
950
951 kind = decode_value (p, &p);
952
953 /* Can't decode this */
954 if (!target)
955 return FALSE;
956 if (target->wrapper_type == MONO_WRAPPER_STELEMREF) {
957 info = mono_marshal_get_wrapper_info (target);
958
959 g_assert (info);
960 if (info->subtype == subtype && info->d.virtual_stelemref.kind == kind)
961 ref->method = target;
962 else
963 return FALSE;
964 } else {
965 return FALSE;
966 }
967 } else {
968 mono_error_set_bad_image_name (error, module->aot_name, "Invalid STELEMREF subtype %d", subtype);
969 return FALSE;
970 }
971 break;
972 }
973 case MONO_WRAPPER_SYNCHRONIZED: {
974 MonoMethod *m = decode_resolve_method_ref (module, p, &p, error);
975 if (!m)
976 return FALSE;
977 ref->method = mono_marshal_get_synchronized_wrapper (m);
978 break;
979 }
980 case MONO_WRAPPER_UNKNOWN: {
981 int subtype = decode_value (p, &p);
982
983 if (subtype == WRAPPER_SUBTYPE_PTR_TO_STRUCTURE || subtype == WRAPPER_SUBTYPE_STRUCTURE_TO_PTR) {
984 MonoClass *klass = decode_klass_ref (module, p, &p, error);
985 if (!klass)
986 return FALSE;
987
988 if (!target)
989 return FALSE;
990 if (klass != target->klass)
991 return FALSE;
992
993 if (subtype == WRAPPER_SUBTYPE_PTR_TO_STRUCTURE) {
994 if (strcmp (target->name, "PtrToStructure"))
995 return FALSE;
996 ref->method = mono_marshal_get_ptr_to_struct (klass);
997 } else {
998 if (strcmp (target->name, "StructureToPtr"))
999 return FALSE;
1000 ref->method = mono_marshal_get_struct_to_ptr (klass);
1001 }
1002 } else if (subtype == WRAPPER_SUBTYPE_SYNCHRONIZED_INNER) {
1003 MonoMethod *m = decode_resolve_method_ref (module, p, &p, error);
1004 if (!m)
1005 return FALSE;
1006 ref->method = mono_marshal_get_synchronized_inner_wrapper (m);
1007 } else if (subtype == WRAPPER_SUBTYPE_ARRAY_ACCESSOR) {
1008 MonoMethod *m = decode_resolve_method_ref (module, p, &p, error);
1009 if (!m)
1010 return FALSE;
1011 ref->method = mono_marshal_get_array_accessor_wrapper (m);
1012 } else if (subtype == WRAPPER_SUBTYPE_GSHAREDVT_IN) {
1013 ref->method = mono_marshal_get_gsharedvt_in_wrapper ();
1014 } else if (subtype == WRAPPER_SUBTYPE_GSHAREDVT_OUT) {
1015 ref->method = mono_marshal_get_gsharedvt_out_wrapper ();
1016 } else if (subtype == WRAPPER_SUBTYPE_GSHAREDVT_IN_SIG) {
1017 MonoMethodSignature *sig = decode_signature (module, p, &p);
1018 if (!sig)
1019 return FALSE;
1020 ref->method = mini_get_gsharedvt_in_sig_wrapper (sig);
1021 } else if (subtype == WRAPPER_SUBTYPE_GSHAREDVT_OUT_SIG) {
1022 MonoMethodSignature *sig = decode_signature (module, p, &p);
1023 if (!sig)
1024 return FALSE;
1025 ref->method = mini_get_gsharedvt_out_sig_wrapper (sig);
1026 } else {
1027 mono_error_set_bad_image_name (error, module->aot_name, "Invalid UNKNOWN wrapper subtype %d", subtype);
1028 return FALSE;
1029 }
1030 break;
1031 }
1032 case MONO_WRAPPER_MANAGED_TO_MANAGED: {
1033 int subtype = decode_value (p, &p);
1034
1035 if (subtype == WRAPPER_SUBTYPE_ELEMENT_ADDR) {
1036 int rank = decode_value (p, &p);
1037 int elem_size = decode_value (p, &p);
1038
1039 ref->method = mono_marshal_get_array_address (rank, elem_size);
1040 } else if (subtype == WRAPPER_SUBTYPE_STRING_CTOR) {
1041 MonoMethod *m;
1042
1043 m = decode_resolve_method_ref (module, p, &p, error);
1044 if (!m)
1045 return FALSE;
1046
1047 if (!target)
1048 return FALSE;
1049 g_assert (target->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED);
1050
1051 info = mono_marshal_get_wrapper_info (target);
1052 if (info && info->subtype == subtype && info->d.string_ctor.method == m)
1053 ref->method = target;
1054 else
1055 return FALSE;
1056 }
1057 break;
1058 }
1059 case MONO_WRAPPER_MANAGED_TO_NATIVE: {
1060 MonoMethod *m;
1061 int subtype = decode_value (p, &p);
1062 char *name;
1063
1064 if (subtype == WRAPPER_SUBTYPE_ICALL_WRAPPER) {
1065 if (!target)
1066 return FALSE;
1067
1068 name = (char*)p;
1069 if (strcmp (target->name, name) != 0)
1070 return FALSE;
1071 ref->method = target;
1072 } else {
1073 m = decode_resolve_method_ref (module, p, &p, error);
1074 if (!m)
1075 return FALSE;
1076
1077 /* This should only happen when looking for an extra method */
1078 if (!target)
1079 return FALSE;
1080 if (mono_marshal_method_from_wrapper (target) == m)
1081 ref->method = target;
1082 else
1083 return FALSE;
1084 }
1085 break;
1086 }
1087 case MONO_WRAPPER_CASTCLASS: {
1088 int subtype = decode_value (p, &p);
1089
1090 if (subtype == WRAPPER_SUBTYPE_CASTCLASS_WITH_CACHE)
1091 ref->method = mono_marshal_get_castclass_with_cache ();
1092 else if (subtype == WRAPPER_SUBTYPE_ISINST_WITH_CACHE)
1093 ref->method = mono_marshal_get_isinst_with_cache ();
1094 else {
1095 mono_error_set_bad_image_name (error, module->aot_name, "Invalid CASTCLASS wrapper subtype %d", subtype);
1096 return FALSE;
1097 }
1098 break;
1099 }
1100 case MONO_WRAPPER_RUNTIME_INVOKE: {
1101 int subtype = decode_value (p, &p);
1102
1103 if (!target)
1104 return FALSE;
1105
1106 if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_DYNAMIC) {
1107 if (strcmp (target->name, "runtime_invoke_dynamic") != 0)
1108 return FALSE;
1109 ref->method = target;
1110 } else if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_DIRECT) {
1111 /* Direct wrapper */
1112 MonoMethod *m = decode_resolve_method_ref (module, p, &p, error);
1113 if (!m)
1114 return FALSE;
1115 ref->method = mono_marshal_get_runtime_invoke (m, FALSE);
1116 } else if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_VIRTUAL) {
1117 /* Virtual direct wrapper */
1118 MonoMethod *m = decode_resolve_method_ref (module, p, &p, error);
1119 if (!m)
1120 return FALSE;
1121 ref->method = mono_marshal_get_runtime_invoke (m, TRUE);
1122 } else {
1123 MonoMethodSignature *sig;
1124
1125 sig = decode_signature_with_target (module, NULL, p, &p);
1126 info = mono_marshal_get_wrapper_info (target);
1127 g_assert (info);
1128
1129 if (info->subtype != subtype)
1130 return FALSE;
1131 g_assert (info->d.runtime_invoke.sig);
1132 if (mono_metadata_signature_equal (sig, info->d.runtime_invoke.sig))
1133 ref->method = target;
1134 else
1135 return FALSE;
1136 }
1137 break;
1138 }
1139 case MONO_WRAPPER_DELEGATE_INVOKE:
1140 case MONO_WRAPPER_DELEGATE_BEGIN_INVOKE:
1141 case MONO_WRAPPER_DELEGATE_END_INVOKE: {
1142 gboolean is_inflated = decode_value (p, &p);
1143 WrapperSubtype subtype;
1144
1145 if (is_inflated) {
1146 MonoClass *klass;
1147 MonoMethod *invoke, *wrapper;
1148
1149 klass = decode_klass_ref (module, p, &p, error);
1150 if (!klass)
1151 return FALSE;
1152
1153 switch (wrapper_type) {
1154 case MONO_WRAPPER_DELEGATE_INVOKE:
1155 invoke = mono_get_delegate_invoke (klass);
1156 wrapper = mono_marshal_get_delegate_invoke (invoke, NULL);
1157 break;
1158 case MONO_WRAPPER_DELEGATE_BEGIN_INVOKE:
1159 invoke = mono_get_delegate_begin_invoke (klass);
1160 wrapper = mono_marshal_get_delegate_begin_invoke (invoke);
1161 break;
1162 case MONO_WRAPPER_DELEGATE_END_INVOKE:
1163 invoke = mono_get_delegate_end_invoke (klass);
1164 wrapper = mono_marshal_get_delegate_end_invoke (invoke);
1165 break;
1166 default:
1167 g_assert_not_reached ();
1168 break;
1169 }
1170 if (target) {
1171 /*
1172 * Due to the way mini_get_shared_method () works, we could end up with
1173 * multiple copies of the same wrapper.
1174 */
1175 if (wrapper->klass != target->klass)
1176 return FALSE;
1177 ref->method = target;
1178 } else {
1179 ref->method = wrapper;
1180 }
1181 } else {
1182 /*
1183 * These wrappers are associated with a signature, not with a method.
1184 * Since we can't decode them into methods, they need a target method.
1185 */
1186 if (!target)
1187 return FALSE;
1188
1189 if (wrapper_type == MONO_WRAPPER_DELEGATE_INVOKE) {
1190 subtype = (WrapperSubtype)decode_value (p, &p);
1191 info = mono_marshal_get_wrapper_info (target);
1192 if (info) {
1193 if (info->subtype != subtype)
1194 return FALSE;
1195 } else {
1196 if (subtype != WRAPPER_SUBTYPE_NONE)
1197 return FALSE;
1198 }
1199 }
1200 if (sig_matches_target (module, target, p, &p))
1201 ref->method = target;
1202 else
1203 return FALSE;
1204 }
1205 break;
1206 }
1207 case MONO_WRAPPER_NATIVE_TO_MANAGED: {
1208 MonoMethod *m;
1209 MonoClass *klass;
1210
1211 m = decode_resolve_method_ref (module, p, &p, error);
1212 if (!m)
1213 return FALSE;
1214 klass = decode_klass_ref (module, p, &p, error);
1215 if (!klass)
1216 return FALSE;
1217 ref->method = mono_marshal_get_managed_wrapper (m, klass, 0);
1218 break;
1219 }
1220 default:
1221 g_assert_not_reached ();
1222 }
1223 } else if (image_index == MONO_AOT_METHODREF_METHODSPEC) {
1224 image_index = decode_value (p, &p);
1225 ref->token = decode_value (p, &p);
1226
1227 image = load_image (module, image_index, error);
1228 if (!image)
1229 return FALSE;
1230 } else if (image_index == MONO_AOT_METHODREF_GINST) {
1231 MonoClass *klass;
1232 MonoGenericContext ctx;
1233
1234 /*
1235 * These methods do not have a token which resolves them, so we
1236 * resolve them immediately.
1237 */
1238 klass = decode_klass_ref (module, p, &p, error);
1239 if (!klass)
1240 return FALSE;
1241
1242 if (target && target->klass != klass)
1243 return FALSE;
1244
1245 image_index = decode_value (p, &p);
1246 ref->token = decode_value (p, &p);
1247
1248 image = load_image (module, image_index, error);
1249 if (!image)
1250 return FALSE;
1251
1252 ref->method = mono_get_method_checked (image, ref->token, NULL, NULL, error);
1253 if (!ref->method)
1254 return FALSE;
1255
1256
1257 memset (&ctx, 0, sizeof (ctx));
1258
1259 if (FALSE && mono_class_is_ginst (klass)) {
1260 ctx.class_inst = mono_class_get_generic_class (klass)->context.class_inst;
1261 ctx.method_inst = NULL;
1262
1263 ref->method = mono_class_inflate_generic_method_full_checked (ref->method, klass, &ctx, error);
1264 if (!ref->method)
1265 return FALSE;
1266 }
1267
1268 memset (&ctx, 0, sizeof (ctx));
1269
1270 if (!decode_generic_context (module, &ctx, p, &p, error))
1271 return FALSE;
1272
1273 ref->method = mono_class_inflate_generic_method_full_checked (ref->method, klass, &ctx, error);
1274 if (!ref->method)
1275 return FALSE;
1276
1277 } else if (image_index == MONO_AOT_METHODREF_ARRAY) {
1278 MonoClass *klass;
1279 int method_type;
1280
1281 klass = decode_klass_ref (module, p, &p, error);
1282 if (!klass)
1283 return FALSE;
1284 method_type = decode_value (p, &p);
1285 switch (method_type) {
1286 case 0:
1287 ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank);
1288 break;
1289 case 1:
1290 ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank * 2);
1291 break;
1292 case 2:
1293 ref->method = mono_class_get_method_from_name (klass, "Get", -1);
1294 break;
1295 case 3:
1296 ref->method = mono_class_get_method_from_name (klass, "Address", -1);
1297 break;
1298 case 4:
1299 ref->method = mono_class_get_method_from_name (klass, "Set", -1);
1300 break;
1301 default:
1302 mono_error_set_bad_image_name (error, module->aot_name, "Invalid METHODREF_ARRAY method type %d", method_type);
1303 return FALSE;
1304 }
1305 } else {
1306 if (image_index == MONO_AOT_METHODREF_LARGE_IMAGE_INDEX) {
1307 image_index = decode_value (p, &p);
1308 value = decode_value (p, &p);
1309 }
1310
1311 ref->token = MONO_TOKEN_METHOD_DEF | (value & 0xffffff);
1312
1313 image = load_image (module, image_index, error);
1314 if (!image)
1315 return FALSE;
1316 }
1317
1318 *endbuf = p;
1319
1320 ref->image = image;
1321
1322 return TRUE;
1323 }
1324
1325 static gboolean
1326 decode_method_ref (MonoAotModule *module, MethodRef *ref, guint8 *buf, guint8 **endbuf, MonoError *error)
1327 {
1328 return decode_method_ref_with_target (module, ref, NULL, buf, endbuf, error);
1329 }
1330
1331 /*
1332 * decode_resolve_method_ref_with_target:
1333 *
1334 * Similar to decode_method_ref, but resolve and return the method itself.
1335 */
1336 static MonoMethod*
1337 decode_resolve_method_ref_with_target (MonoAotModule *module, MonoMethod *target, guint8 *buf, guint8 **endbuf, MonoError *error)
1338 {
1339 MethodRef ref;
1340
1341 mono_error_init (error);
1342
1343 if (!decode_method_ref_with_target (module, &ref, target, buf, endbuf, error))
1344 return NULL;
1345 if (ref.method)
1346 return ref.method;
1347 if (!ref.image) {
1348 mono_error_set_bad_image_name (error, module->aot_name, "No image found for methodref with target");
1349 return NULL;
1350 }
1351 return mono_get_method_checked (ref.image, ref.token, NULL, NULL, error);
1352 }
1353
1354 static MonoMethod*
1355 decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf, MonoError *error)
1356 {
1357 return decode_resolve_method_ref_with_target (module, NULL, buf, endbuf, error);
1358 }
1359
1360 #ifdef ENABLE_AOT_CACHE
1361
1362 /* AOT CACHE */
1363
1364 /*
1365 * FIXME:
1366 * - Add options for controlling the cache size
1367 * - Handle full cache by deleting old assemblies lru style
1368 * - Maybe add a threshold after an assembly is AOT compiled
1369 * - Add options for enabling this for specific main assemblies
1370 */
1371
1372 /* The cache directory */
1373 static char *cache_dir;
1374
1375 /* The number of assemblies AOTed in this run */
1376 static int cache_count;
1377
1378 /* Whenever to AOT in-process */
1379 static gboolean in_process;
1380
1381 static void
1382 collect_assemblies (gpointer data, gpointer user_data)
1383 {
1384 MonoAssembly *ass = data;
1385 GSList **l = user_data;
1386
1387 *l = g_slist_prepend (*l, ass);
1388 }
1389
1390 #define SHA1_DIGEST_LENGTH 20
1391
1392 /*
1393 * get_aot_config_hash:
1394 *
1395 * Return a hash for all the version information an AOT module depends on.
1396 */
1397 static G_GNUC_UNUSED char*
1398 get_aot_config_hash (MonoAssembly *assembly)
1399 {
1400 char *build_info;
1401 GSList *l, *assembly_list = NULL;
1402 GString *s;
1403 int i;
1404 guint8 digest [SHA1_DIGEST_LENGTH];
1405 char *digest_str;
1406
1407 build_info = mono_get_runtime_build_info ();
1408
1409 s = g_string_new (build_info);
1410
1411 mono_assembly_foreach (collect_assemblies, &assembly_list);
1412
1413 /*
1414 * The assembly list includes the current assembly as well, no need
1415 * to add it.
1416 */
1417 for (l = assembly_list; l; l = l->next) {
1418 MonoAssembly *ass = l->data;
1419
1420 g_string_append (s, "_");
1421 g_string_append (s, ass->aname.name);
1422 g_string_append (s, "_");
1423 g_string_append (s, ass->image->guid);
1424 }
1425
1426 for (i = 0; i < s->len; ++i) {
1427 if (!isalnum (s->str [i]) && s->str [i] != '-')
1428 s->str [i] = '_';
1429 }
1430
1431 mono_sha1_get_digest ((guint8*)s->str, s->len, digest);
1432
1433 digest_str = g_malloc0 ((SHA1_DIGEST_LENGTH * 2) + 1);
1434 for (i = 0; i < SHA1_DIGEST_LENGTH; ++i)
1435 sprintf (digest_str + (i * 2), "%02x", digest [i]);
1436
1437 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: file dependencies: %s, hash %s", s->str, digest_str);
1438
1439 g_string_free (s, TRUE);
1440
1441 return digest_str;
1442 }
1443
1444 static void
1445 aot_cache_init (void)
1446 {
1447 if (mono_aot_only)
1448 return;
1449 enable_aot_cache = TRUE;
1450 in_process = TRUE;
1451 }
1452
1453 /*
1454 * aot_cache_load_module:
1455 *
1456 * Load the AOT image corresponding to ASSEMBLY from the aot cache, AOTing it if neccessary.
1457 */
1458 static MonoDl*
1459 aot_cache_load_module (MonoAssembly *assembly, char **aot_name)
1460 {
1461 MonoAotCacheConfig *config;
1462 GSList *l;
1463 char *fname, *tmp2, *aot_options, *failure_fname;
1464 const char *home;
1465 MonoDl *module;
1466 gboolean res;
1467 gint exit_status;
1468 char *hash;
1469 int pid;
1470 gboolean enabled;
1471 FILE *failure_file;
1472
1473 *aot_name = NULL;
1474
1475 if (image_is_dynamic (assembly->image))
1476 return NULL;
1477
1478 /* Check in the list of assemblies enabled for aot caching */
1479 config = mono_get_aot_cache_config ();
1480
1481 enabled = FALSE;
1482 if (config->apps) {
1483 MonoDomain *domain = mono_domain_get ();
1484 MonoAssembly *entry_assembly = domain->entry_assembly;
1485
1486 // FIXME: This cannot be used for mscorlib during startup, since entry_assembly is not set yet
1487 for (l = config->apps; l; l = l->next) {
1488 char *n = l->data;
1489
1490 if ((entry_assembly && !strcmp (entry_assembly->aname.name, n)) || (!entry_assembly && !strcmp (assembly->aname.name, n)))
1491 break;
1492 }
1493 if (l)
1494 enabled = TRUE;
1495 }
1496
1497 if (!enabled) {
1498 for (l = config->assemblies; l; l = l->next) {
1499 char *n = l->data;
1500
1501 if (!strcmp (assembly->aname.name, n))
1502 break;
1503 }
1504 if (l)
1505 enabled = TRUE;
1506 }
1507 if (!enabled)
1508 return NULL;
1509
1510 if (!cache_dir) {
1511 home = g_get_home_dir ();
1512 if (!home)
1513 return NULL;
1514 cache_dir = g_strdup_printf ("%s/Library/Caches/mono/aot-cache", home);
1515 if (!g_file_test (cache_dir, G_FILE_TEST_EXISTS|G_FILE_TEST_IS_DIR))
1516 g_mkdir_with_parents (cache_dir, 0777);
1517 }
1518
1519 /*
1520 * The same assembly can be used in multiple configurations, i.e. multiple
1521 * versions of the runtime, with multiple versions of dependent assemblies etc.
1522 * To handle this, we compute a version string containing all this information, hash it,
1523 * and use the hash as a filename suffix.
1524 */
1525 hash = get_aot_config_hash (assembly);
1526
1527 tmp2 = g_strdup_printf ("%s-%s%s", assembly->image->assembly_name, hash, MONO_SOLIB_EXT);
1528 fname = g_build_filename (cache_dir, tmp2, NULL);
1529 *aot_name = fname;
1530 g_free (tmp2);
1531
1532 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: loading from cache: '%s'.", fname);
1533 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
1534
1535 if (module) {
1536 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: found in cache: '%s'.", fname);
1537 return module;
1538 }
1539
1540 if (!strcmp (assembly->aname.name, "mscorlib") && !mscorlib_aot_loaded)
1541 /*
1542 * Can't AOT this during startup, so we AOT it when called later from
1543 * mono_aot_get_method ().
1544 */
1545 return NULL;
1546
1547 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: not found.");
1548
1549 /* Only AOT one assembly per run to avoid slowing down execution too much */
1550 if (cache_count > 0)
1551 return NULL;
1552 cache_count ++;
1553
1554 /* Check for previous failure */
1555 failure_fname = g_strdup_printf ("%s.failure", fname);
1556 failure_file = fopen (failure_fname, "r");
1557 if (failure_file) {
1558 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: assembly '%s' previously failed to compile '%s' ('%s')... ", assembly->image->name, fname, failure_fname);
1559 g_free (failure_fname);
1560 return NULL;
1561 } else {
1562 g_free (failure_fname);
1563 fclose (failure_file);
1564 }
1565
1566 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: compiling assembly '%s', logfile: '%s.log'... ", assembly->image->name, fname);
1567
1568 /*
1569 * We need to invoke the AOT compiler here. There are multiple approaches:
1570 * - spawn a new runtime process. This can be hard when running with mkbundle, and
1571 * its hard to make the new process load the same set of assemblies.
1572 * - doing it in-process. This exposes the current process to bugs/leaks/side effects of
1573 * the AOT compiler.
1574 * - fork a new process and do the work there.
1575 */
1576 if (in_process) {
1577 aot_options = g_strdup_printf ("outfile=%s,internal-logfile=%s.log%s%s", fname, fname, config->aot_options ? "," : "", config->aot_options ? config->aot_options : "");
1578 /* Maybe due this in another thread ? */
1579 res = mono_compile_assembly (assembly, mono_parse_default_optimizations (NULL), aot_options);
1580 if (res) {
1581 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: compilation failed.");
1582 failure_fname = g_strdup_printf ("%s.failure", fname);
1583 failure_file = fopen (failure_fname, "a+");
1584 fclose (failure_file);
1585 g_free (failure_fname);
1586 } else {
1587 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: compilation succeeded.");
1588 }
1589 } else {
1590 /*
1591 * - Avoid waiting for the aot process to finish ?
1592 * (less overhead, but multiple processes could aot the same assembly at the same time)
1593 */
1594 pid = fork ();
1595 if (pid == 0) {
1596 FILE *logfile;
1597 char *logfile_name;
1598
1599 /* Child */
1600
1601 logfile_name = g_strdup_printf ("%s/aot.log", cache_dir);
1602 logfile = fopen (logfile_name, "a+");
1603 g_free (logfile_name);
1604
1605 dup2 (fileno (logfile), 1);
1606 dup2 (fileno (logfile), 2);
1607
1608 aot_options = g_strdup_printf ("outfile=%s", fname);
1609 res = mono_compile_assembly (assembly, mono_parse_default_optimizations (NULL), aot_options);
1610 if (!res) {
1611 exit (1);
1612 } else {
1613 exit (0);
1614 }
1615 } else {
1616 /* Parent */
1617 waitpid (pid, &exit_status, 0);
1618 if (!WIFEXITED (exit_status) && (WEXITSTATUS (exit_status) == 0))
1619 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: failed.");
1620 else
1621 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: succeeded.");
1622 }
1623 }
1624
1625 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
1626
1627 return module;
1628 }
1629
1630 #else
1631
1632 static void
1633 aot_cache_init (void)
1634 {
1635 }
1636
1637 static MonoDl*
1638 aot_cache_load_module (MonoAssembly *assembly, char **aot_name)
1639 {
1640 return NULL;
1641 }
1642
1643 #endif
1644
1645 static void
1646 find_symbol (MonoDl *module, gpointer *globals, const char *name, gpointer *value)
1647 {
1648 if (globals) {
1649 int global_index;
1650 guint16 *table, *entry;
1651 guint16 table_size;
1652 guint32 hash;
1653 char *symbol = (char*)name;
1654
1655 #ifdef TARGET_MACH
1656 symbol = g_strdup_printf ("_%s", name);
1657 #endif
1658
1659 /* The first entry points to the hash */
1660 table = (guint16 *)globals [0];
1661 globals ++;
1662
1663 table_size = table [0];
1664 table ++;
1665
1666 hash = mono_metadata_str_hash (symbol) % table_size;
1667
1668 entry = &table [hash * 2];
1669
1670 /* Search the hash for the index into the globals table */
1671 global_index = -1;
1672 while (entry [0] != 0) {
1673 guint32 index = entry [0] - 1;
1674 guint32 next = entry [1];
1675
1676 //printf ("X: %s %s\n", (char*)globals [index * 2], name);
1677
1678 if (!strcmp (globals [index * 2], symbol)) {
1679 global_index = index;
1680 break;
1681 }
1682
1683 if (next != 0) {
1684 entry = &table [next * 2];
1685 } else {
1686 break;
1687 }
1688 }
1689
1690 if (global_index != -1)
1691 *value = globals [global_index * 2 + 1];
1692 else
1693 *value = NULL;
1694
1695 if (symbol != name)
1696 g_free (symbol);
1697 } else {
1698 char *err = mono_dl_symbol (module, name, value);
1699
1700 if (err)
1701 g_free (err);
1702 }
1703 }
1704
1705 static void
1706 find_amodule_symbol (MonoAotModule *amodule, const char *name, gpointer *value)
1707 {
1708 g_assert (!(amodule->info.flags & MONO_AOT_FILE_FLAG_LLVM_ONLY));
1709
1710 find_symbol (amodule->sofile, amodule->globals, name, value);
1711 }
1712
1713 void
1714 mono_install_load_aot_data_hook (MonoLoadAotDataFunc load_func, MonoFreeAotDataFunc free_func, gpointer user_data)
1715 {
1716 aot_data_load_func = load_func;
1717 aot_data_free_func = free_func;
1718 aot_data_func_user_data = user_data;
1719 }
1720
1721 /* Load the separate aot data file for ASSEMBLY */
1722 static guint8*
1723 open_aot_data (MonoAssembly *assembly, MonoAotFileInfo *info, void **ret_handle)
1724 {
1725 MonoFileMap *map;
1726 char *filename;
1727 guint8 *data;
1728
1729 if (aot_data_load_func) {
1730 data = aot_data_load_func (assembly, info->datafile_size, aot_data_func_user_data, ret_handle);
1731 g_assert (data);
1732 return data;
1733 }
1734
1735 /*
1736 * Use <assembly name>.aotdata as the default implementation if no callback is given
1737 */
1738 filename = g_strdup_printf ("%s.aotdata", assembly->image->name);
1739 map = mono_file_map_open (filename);
1740 g_assert (map);
1741 data = mono_file_map (info->datafile_size, MONO_MMAP_READ, mono_file_map_fd (map), 0, ret_handle);
1742 g_assert (data);
1743
1744 return data;
1745 }
1746
1747 static gboolean
1748 check_usable (MonoAssembly *assembly, MonoAotFileInfo *info, guint8 *blob, char **out_msg)
1749 {
1750 char *build_info;
1751 char *msg = NULL;
1752 gboolean usable = TRUE;
1753 gboolean full_aot, safepoints;
1754 guint32 excluded_cpu_optimizations;
1755
1756 if (strcmp (assembly->image->guid, info->assembly_guid)) {
1757 msg = g_strdup_printf ("doesn't match assembly");
1758 usable = FALSE;
1759 }
1760
1761 build_info = mono_get_runtime_build_info ();
1762 if (strlen ((const char *)info->runtime_version) > 0 && strcmp (info->runtime_version, build_info)) {
1763 msg = g_strdup_printf ("compiled against runtime version '%s' while this runtime has version '%s'", info->runtime_version, build_info);
1764 usable = FALSE;
1765 }
1766 g_free (build_info);
1767
1768 full_aot = info->flags & MONO_AOT_FILE_FLAG_FULL_AOT;
1769
1770 if (mono_aot_only && !full_aot) {
1771 msg = g_strdup_printf ("not compiled with --aot=full");
1772 usable = FALSE;
1773 }
1774 if (!mono_aot_only && full_aot) {
1775 msg = g_strdup_printf ("compiled with --aot=full");
1776 usable = FALSE;
1777 }
1778 if (mono_llvm_only && !(info->flags & MONO_AOT_FILE_FLAG_LLVM_ONLY)) {
1779 msg = g_strdup_printf ("not compiled with --aot=llvmonly");
1780 usable = FALSE;
1781 }
1782 if (mini_get_debug_options ()->mdb_optimizations && !(info->flags & MONO_AOT_FILE_FLAG_DEBUG) && !full_aot) {
1783 msg = g_strdup_printf ("not compiled for debugging");
1784 usable = FALSE;
1785 }
1786
1787 mono_arch_cpu_optimizations (&excluded_cpu_optimizations);
1788 if (info->opts & excluded_cpu_optimizations) {
1789 msg = g_strdup_printf ("compiled with unsupported CPU optimizations");
1790 usable = FALSE;
1791 }
1792
1793 if (!mono_aot_only && (info->simd_opts & ~mono_arch_cpu_enumerate_simd_versions ())) {
1794 msg = g_strdup_printf ("compiled with unsupported SIMD extensions");
1795 usable = FALSE;
1796 }
1797
1798 if (info->gc_name_index != -1) {
1799 char *gc_name = (char*)&blob [info->gc_name_index];
1800 const char *current_gc_name = mono_gc_get_gc_name ();
1801
1802 if (strcmp (current_gc_name, gc_name) != 0) {
1803 msg = g_strdup_printf ("compiled against GC %s, while the current runtime uses GC %s.\n", gc_name, current_gc_name);
1804 usable = FALSE;
1805 }
1806 }
1807
1808 safepoints = info->flags & MONO_AOT_FILE_FLAG_SAFEPOINTS;
1809
1810 if (!safepoints && mono_threads_is_coop_enabled ()) {
1811 msg = g_strdup_printf ("not compiled with safepoints");
1812 usable = FALSE;
1813 }
1814
1815 *out_msg = msg;
1816 return usable;
1817 }
1818
1819 /*
1820 * TABLE should point to a table of call instructions. Return the address called by the INDEXth entry.
1821 */
1822 static void*
1823 get_call_table_entry (void *table, int index)
1824 {
1825 #if defined(TARGET_ARM)
1826 guint32 *ins_addr;
1827 guint32 ins;
1828 gint32 offset;
1829
1830 ins_addr = (guint32*)table + index;
1831 ins = *ins_addr;
1832 if ((ins >> ARMCOND_SHIFT) == ARMCOND_NV) {
1833 /* blx */
1834 offset = (((int)(((ins & 0xffffff) << 1) | ((ins >> 24) & 0x1))) << 7) >> 7;
1835 return (char*)ins_addr + (offset * 2) + 8 + 1;
1836 } else {
1837 offset = (((int)ins & 0xffffff) << 8) >> 8;
1838 return (char*)ins_addr + (offset * 4) + 8;
1839 }
1840 #elif defined(TARGET_ARM64)
1841 return mono_arch_get_call_target ((guint8*)table + (index * 4) + 4);
1842 #elif defined(TARGET_X86) || defined(TARGET_AMD64)
1843 /* The callee expects an ip which points after the call */
1844 return mono_arch_get_call_target ((guint8*)table + (index * 5) + 5);
1845 #else
1846 g_assert_not_reached ();
1847 return NULL;
1848 #endif
1849 }
1850
1851 /*
1852 * init_amodule_got:
1853 *
1854 * Initialize the shared got entries for AMODULE.
1855 */
1856 static void
1857 init_amodule_got (MonoAotModule *amodule)
1858 {
1859 MonoJumpInfo *ji;
1860 MonoMemPool *mp;
1861 MonoJumpInfo *patches;
1862 guint32 got_offsets [128];
1863 MonoError error;
1864 int i, npatches;
1865
1866 /* These can't be initialized in load_aot_module () */
1867 if (amodule->shared_got [0] || amodule->got_initializing)
1868 return;
1869
1870 amodule->got_initializing = TRUE;
1871
1872 mp = mono_mempool_new ();
1873 npatches = amodule->info.nshared_got_entries;
1874 for (i = 0; i < npatches; ++i)
1875 got_offsets [i] = i;
1876 patches = decode_patches (amodule, mp, npatches, FALSE, got_offsets);
1877 g_assert (patches);
1878 for (i = 0; i < npatches; ++i) {
1879 ji = &patches [i];
1880
1881 if (ji->type == MONO_PATCH_INFO_GC_CARD_TABLE_ADDR && !mono_gc_is_moving ()) {
1882 amodule->shared_got [i] = NULL;
1883 } else if (ji->type == MONO_PATCH_INFO_GC_NURSERY_START && !mono_gc_is_moving ()) {
1884 amodule->shared_got [i] = NULL;
1885 } else if (ji->type == MONO_PATCH_INFO_GC_NURSERY_BITS && !mono_gc_is_moving ()) {
1886 amodule->shared_got [i] = NULL;
1887 } else if (ji->type == MONO_PATCH_INFO_IMAGE) {
1888 amodule->shared_got [i] = amodule->assembly->image;
1889 } else if (ji->type == MONO_PATCH_INFO_MSCORLIB_GOT_ADDR) {
1890 if (mono_defaults.corlib) {
1891 MonoAotModule *mscorlib_amodule = (MonoAotModule *)mono_defaults.corlib->aot_module;
1892
1893 if (mscorlib_amodule)
1894 amodule->shared_got [i] = mscorlib_amodule->got;
1895 } else {
1896 amodule->shared_got [i] = amodule->got;
1897 }
1898 } else if (ji->type == MONO_PATCH_INFO_AOT_MODULE) {
1899 amodule->shared_got [i] = amodule;
1900 } else {
1901 amodule->shared_got [i] = mono_resolve_patch_target (NULL, mono_get_root_domain (), NULL, ji, FALSE, &error);
1902 mono_error_assert_ok (&error);
1903 }
1904 }
1905
1906 if (amodule->got) {
1907 for (i = 0; i < npatches; ++i)
1908 amodule->got [i] = amodule->shared_got [i];
1909 }
1910 if (amodule->llvm_got) {
1911 for (i = 0; i < npatches; ++i)
1912 amodule->llvm_got [i] = amodule->shared_got [i];
1913 }
1914
1915 mono_mempool_destroy (mp);
1916 }
1917
1918 static void
1919 load_aot_module (MonoAssembly *assembly, gpointer user_data)
1920 {
1921 char *aot_name;
1922 MonoAotModule *amodule;
1923 MonoDl *sofile;
1924 gboolean usable = TRUE;
1925 char *version_symbol = NULL;
1926 char *msg = NULL;
1927 gpointer *globals = NULL;
1928 MonoAotFileInfo *info = NULL;
1929 int i, version;
1930 gboolean do_load_image = TRUE;
1931 int align_double, align_int64;
1932 guint8 *aot_data = NULL;
1933
1934 if (mono_compile_aot)
1935 return;
1936
1937 if (assembly->image->aot_module)
1938 /*
1939 * Already loaded. This can happen because the assembly loading code might invoke
1940 * the assembly load hooks multiple times for the same assembly.
1941 */
1942 return;
1943
1944 if (image_is_dynamic (assembly->image) || assembly->ref_only)
1945 return;
1946
1947 mono_aot_lock ();
1948 if (static_aot_modules)
1949 info = (MonoAotFileInfo *)g_hash_table_lookup (static_aot_modules, assembly->aname.name);
1950 else
1951 info = NULL;
1952 mono_aot_unlock ();
1953
1954 sofile = NULL;
1955
1956 if (info) {
1957 /* Statically linked AOT module */
1958 aot_name = g_strdup_printf ("%s", assembly->aname.name);
1959 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "Found statically linked AOT module '%s'.", aot_name);
1960 if (!(info->flags & MONO_AOT_FILE_FLAG_LLVM_ONLY)) {
1961 globals = (void **)info->globals;
1962 g_assert (globals);
1963 }
1964 } else {
1965 if (enable_aot_cache)
1966 sofile = aot_cache_load_module (assembly, &aot_name);
1967 if (!sofile) {
1968 char *err;
1969 aot_name = g_strdup_printf ("%s%s", assembly->image->name, MONO_SOLIB_EXT);
1970
1971 sofile = mono_dl_open (aot_name, MONO_DL_LAZY, &err);
1972
1973 if (!sofile) {
1974 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module '%s' not found: %s", aot_name, err);
1975 g_free (err);
1976
1977 g_free (aot_name);
1978 char *basename = g_path_get_basename (assembly->image->name);
1979 aot_name = g_strdup_printf ("%s/mono/aot-cache/%s/%s%s", mono_assembly_getrootdir(), MONO_ARCHITECTURE, basename, MONO_SOLIB_EXT);
1980 g_free (basename);
1981 sofile = mono_dl_open (aot_name, MONO_DL_LAZY, &err);
1982 if (!sofile) {
1983 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module '%s' not found: %s", aot_name, err);
1984 g_free (err);
1985 }
1986
1987 }
1988 }
1989 if (!sofile) {
1990 if (mono_aot_only && assembly->image->tables [MONO_TABLE_METHOD].rows)
1991 g_error ("Failed to load AOT module '%s' in aot-only mode.\n", aot_name);
1992 g_free (aot_name);
1993 return;
1994 }
1995 }
1996
1997 if (!info) {
1998 find_symbol (sofile, globals, "mono_aot_version", (gpointer *) &version_symbol);
1999 find_symbol (sofile, globals, "mono_aot_file_info", (gpointer*)&info);
2000 }
2001
2002 // Copy aotid to MonoImage
2003 memcpy(&assembly->image->aotid, info->aotid, 16);
2004
2005 if (version_symbol) {
2006 /* Old file format */
2007 version = atoi (version_symbol);
2008 } else {
2009 g_assert (info);
2010 version = info->version;
2011 }
2012
2013 if (version != MONO_AOT_FILE_VERSION) {
2014 msg = g_strdup_printf ("wrong file format version (expected %d got %d)", MONO_AOT_FILE_VERSION, version);
2015 usable = FALSE;
2016 } else {
2017 guint8 *blob;
2018 void *handle;
2019
2020 if (info->flags & MONO_AOT_FILE_FLAG_SEPARATE_DATA) {
2021 aot_data = open_aot_data (assembly, info, &handle);
2022
2023 blob = aot_data + info->table_offsets [MONO_AOT_TABLE_BLOB];
2024 } else {
2025 blob = (guint8 *)info->blob;
2026 }
2027
2028 usable = check_usable (assembly, info, blob, &msg);
2029 }
2030
2031 if (!usable) {
2032 if (mono_aot_only) {
2033 g_error ("Failed to load AOT module '%s' while running in aot-only mode: %s.\n", aot_name, msg);
2034 } else {
2035 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: module %s is unusable: %s.", aot_name, msg);
2036 }
2037 g_free (msg);
2038 g_free (aot_name);
2039 if (sofile)
2040 mono_dl_close (sofile);
2041 assembly->image->aot_module = NULL;
2042 return;
2043 }
2044
2045 /* Sanity check */
2046 align_double = MONO_ABI_ALIGNOF (double);
2047 align_int64 = MONO_ABI_ALIGNOF (gint64);
2048 g_assert (info->double_align == align_double);
2049 g_assert (info->long_align == align_int64);
2050 g_assert (info->generic_tramp_num == MONO_TRAMPOLINE_NUM);
2051
2052 amodule = g_new0 (MonoAotModule, 1);
2053 amodule->aot_name = aot_name;
2054 amodule->assembly = assembly;
2055
2056 memcpy (&amodule->info, info, sizeof (*info));
2057
2058 amodule->got = (void **)amodule->info.jit_got;
2059 amodule->llvm_got = (void **)amodule->info.llvm_got;
2060 amodule->globals = globals;
2061 amodule->sofile = sofile;
2062 amodule->method_to_code = g_hash_table_new (mono_aligned_addr_hash, NULL);
2063 amodule->extra_methods = g_hash_table_new (NULL, NULL);
2064 amodule->shared_got = g_new0 (gpointer, info->nshared_got_entries);
2065
2066 if (info->flags & MONO_AOT_FILE_FLAG_SEPARATE_DATA) {
2067 for (i = 0; i < MONO_AOT_TABLE_NUM; ++i)
2068 amodule->tables [i] = aot_data + info->table_offsets [i];
2069 }
2070
2071 mono_os_mutex_init_recursive (&amodule->mutex);
2072
2073 /* Read image table */
2074 {
2075 guint32 table_len, i;
2076 char *table = NULL;
2077
2078 if (info->flags & MONO_AOT_FILE_FLAG_SEPARATE_DATA)
2079 table = amodule->tables [MONO_AOT_TABLE_IMAGE_TABLE];
2080 else
2081 table = (char *)info->image_table;
2082 g_assert (table);
2083
2084 table_len = *(guint32*)table;
2085 table += sizeof (guint32);
2086 amodule->image_table = g_new0 (MonoImage*, table_len);
2087 amodule->image_names = g_new0 (MonoAssemblyName, table_len);
2088 amodule->image_guids = g_new0 (char*, table_len);
2089 amodule->image_table_len = table_len;
2090 for (i = 0; i < table_len; ++i) {
2091 MonoAssemblyName *aname = &(amodule->image_names [i]);
2092
2093 aname->name = g_strdup (table);
2094 table += strlen (table) + 1;
2095 amodule->image_guids [i] = g_strdup (table);
2096 table += strlen (table) + 1;
2097 if (table [0] != 0)
2098 aname->culture = g_strdup (table);
2099 table += strlen (table) + 1;
2100 memcpy (aname->public_key_token, table, strlen (table) + 1);
2101 table += strlen (table) + 1;
2102
2103 table = (char *)ALIGN_PTR_TO (table, 8);
2104 aname->flags = *(guint32*)table;
2105 table += 4;
2106 aname->major = *(guint32*)table;
2107 table += 4;
2108 aname->minor = *(guint32*)table;
2109 table += 4;
2110 aname->build = *(guint32*)table;
2111 table += 4;
2112 aname->revision = *(guint32*)table;
2113 table += 4;
2114 }
2115 }
2116
2117 amodule->jit_code_start = (guint8 *)info->jit_code_start;
2118 amodule->jit_code_end = (guint8 *)info->jit_code_end;
2119 if (info->flags & MONO_AOT_FILE_FLAG_SEPARATE_DATA) {
2120 amodule->blob = amodule->tables [MONO_AOT_TABLE_BLOB];
2121 amodule->method_info_offsets = amodule->tables [MONO_AOT_TABLE_METHOD_INFO_OFFSETS];
2122 amodule->ex_info_offsets = amodule->tables [MONO_AOT_TABLE_EX_INFO_OFFSETS];
2123 amodule->class_info_offsets = amodule->tables [MONO_AOT_TABLE_CLASS_INFO_OFFSETS];
2124 amodule->class_name_table = amodule->tables [MONO_AOT_TABLE_CLASS_NAME];
2125 amodule->extra_method_table = amodule->tables [MONO_AOT_TABLE_EXTRA_METHOD_TABLE];
2126 amodule->extra_method_info_offsets = amodule->tables [MONO_AOT_TABLE_EXTRA_METHOD_INFO_OFFSETS];
2127 amodule->got_info_offsets = amodule->tables [MONO_AOT_TABLE_GOT_INFO_OFFSETS];
2128 amodule->llvm_got_info_offsets = amodule->tables [MONO_AOT_TABLE_LLVM_GOT_INFO_OFFSETS];
2129 } else {
2130 amodule->blob = info->blob;
2131 amodule->method_info_offsets = (guint32 *)info->method_info_offsets;
2132 amodule->ex_info_offsets = (guint32 *)info->ex_info_offsets;
2133 amodule->class_info_offsets = (guint32 *)info->class_info_offsets;
2134 amodule->class_name_table = (guint16 *)info->class_name_table;
2135 amodule->extra_method_table = (guint32 *)info->extra_method_table;
2136 amodule->extra_method_info_offsets = (guint32 *)info->extra_method_info_offsets;
2137 amodule->got_info_offsets = info->got_info_offsets;
2138 amodule->llvm_got_info_offsets = info->llvm_got_info_offsets;
2139 }
2140 amodule->unbox_trampolines = (guint32 *)info->unbox_trampolines;
2141 amodule->unbox_trampolines_end = (guint32 *)info->unbox_trampolines_end;
2142 amodule->unbox_trampoline_addresses = (guint32 *)info->unbox_trampoline_addresses;
2143 amodule->unwind_info = (guint8 *)info->unwind_info;
2144 amodule->mem_begin = amodule->jit_code_start;
2145 amodule->mem_end = (guint8 *)info->mem_end;
2146 amodule->plt = (guint8 *)info->plt;
2147 amodule->plt_end = (guint8 *)info->plt_end;
2148 amodule->mono_eh_frame = (guint8 *)info->mono_eh_frame;
2149 amodule->trampolines [MONO_AOT_TRAMP_SPECIFIC] = (guint8 *)info->specific_trampolines;
2150 amodule->trampolines [MONO_AOT_TRAMP_STATIC_RGCTX] = (guint8 *)info->static_rgctx_trampolines;
2151 amodule->trampolines [MONO_AOT_TRAMP_IMT] = (guint8 *)info->imt_trampolines;
2152 amodule->trampolines [MONO_AOT_TRAMP_GSHAREDVT_ARG] = (guint8 *)info->gsharedvt_arg_trampolines;
2153
2154 if (!strcmp (assembly->aname.name, "mscorlib"))
2155 mscorlib_aot_module = amodule;
2156
2157 /* Compute method addresses */
2158 amodule->methods = (void **)g_malloc0 (amodule->info.nmethods * sizeof (gpointer));
2159 for (i = 0; i < amodule->info.nmethods; ++i) {
2160 void *addr = NULL;
2161
2162 if (amodule->info.llvm_get_method) {
2163 gpointer (*get_method) (int) = (gpointer (*)(int))amodule->info.llvm_get_method;
2164
2165 addr = get_method (i);
2166 }
2167
2168 /* method_addresses () contains a table of branches, since the ios linker can update those correctly */
2169 if (!addr && amodule->info.method_addresses) {
2170 addr = get_call_table_entry (amodule->info.method_addresses, i);
2171 g_assert (addr);
2172 if (addr == amodule->info.method_addresses)
2173 addr = NULL;
2174 }
2175 if (addr == NULL)
2176 amodule->methods [i] = GINT_TO_POINTER (-1);
2177 else
2178 amodule->methods [i] = addr;
2179 }
2180
2181 if (make_unreadable) {
2182 #ifndef TARGET_WIN32
2183 guint8 *addr;
2184 guint8 *page_start, *page_end;
2185 int err, len;
2186
2187 addr = amodule->mem_begin;
2188 g_assert (addr);
2189 len = amodule->mem_end - amodule->mem_begin;
2190
2191 /* Round down in both directions to avoid modifying data which is not ours */
2192 page_start = (guint8 *) (((gssize) (addr)) & ~ (mono_pagesize () - 1)) + mono_pagesize ();
2193 page_end = (guint8 *) (((gssize) (addr + len)) & ~ (mono_pagesize () - 1));
2194 if (page_end > page_start) {
2195 err = mono_mprotect (page_start, (page_end - page_start), MONO_MMAP_NONE);
2196 g_assert (err == 0);
2197 }
2198 #endif
2199 }
2200
2201 /* Compute the boundaries of LLVM code */
2202 if (info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM)
2203 compute_llvm_code_range (amodule, &amodule->llvm_code_start, &amodule->llvm_code_end);
2204
2205 mono_aot_lock ();
2206
2207 if (amodule->jit_code_start) {
2208 aot_code_low_addr = MIN (aot_code_low_addr, (gsize)amodule->jit_code_start);
2209 aot_code_high_addr = MAX (aot_code_high_addr, (gsize)amodule->jit_code_end);
2210 }
2211 if (amodule->llvm_code_start) {
2212 aot_code_low_addr = MIN (aot_code_low_addr, (gsize)amodule->llvm_code_start);
2213 aot_code_high_addr = MAX (aot_code_high_addr, (gsize)amodule->llvm_code_end);
2214 }
2215
2216 g_hash_table_insert (aot_modules, assembly, amodule);
2217 mono_aot_unlock ();
2218
2219 if (amodule->jit_code_start)
2220 mono_jit_info_add_aot_module (assembly->image, amodule->jit_code_start, amodule->jit_code_end);
2221 if (amodule->llvm_code_start)
2222 mono_jit_info_add_aot_module (assembly->image, amodule->llvm_code_start, amodule->llvm_code_end);
2223
2224 assembly->image->aot_module = amodule;
2225
2226 if (mono_aot_only && !mono_llvm_only) {
2227 char *code;
2228 find_amodule_symbol (amodule, "specific_trampolines_page", (gpointer *)&code);
2229 amodule->use_page_trampolines = code != NULL;
2230 /*g_warning ("using page trampolines: %d", amodule->use_page_trampolines);*/
2231 }
2232
2233 /*
2234 * Register the plt region as a single trampoline so we can unwind from this code
2235 */
2236 mono_tramp_info_register (
2237 mono_tramp_info_create (
2238 NULL,
2239 amodule->plt,
2240 amodule->plt_end - amodule->plt,
2241 NULL,
2242 mono_unwind_get_cie_program ()
2243 ),
2244 NULL
2245 );
2246
2247 /*
2248 * Since we store methoddef and classdef tokens when referring to methods/classes in
2249 * referenced assemblies, we depend on the exact versions of the referenced assemblies.
2250 * MS calls this 'hard binding'. This means we have to load all referenced assemblies
2251 * non-lazily, since we can't handle out-of-date errors later.
2252 * The cached class info also depends on the exact assemblies.
2253 */
2254 #if defined(__native_client__)
2255 /* TODO: Don't 'load_image' on mscorlib due to a */
2256 /* recursive loading problem. This should be */
2257 /* removed if mscorlib is loaded from disk. */
2258 if (strncmp(assembly->aname.name, "mscorlib", 8)) {
2259 do_load_image = TRUE;
2260 } else {
2261 do_load_image = FALSE;
2262 }
2263 #endif
2264 if (do_load_image) {
2265 for (i = 0; i < amodule->image_table_len; ++i) {
2266 MonoError error;
2267 load_image (amodule, i, &error);
2268 mono_error_cleanup (&error); /* FIXME don't swallow the error */
2269 }
2270 }
2271
2272 if (amodule->out_of_date) {
2273 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: Module %s is unusable because a dependency is out-of-date.", assembly->image->name);
2274 if (mono_aot_only)
2275 g_error ("Failed to load AOT module '%s' while running in aot-only mode because a dependency cannot be found or it is out of date.\n", aot_name);
2276 }
2277 else
2278 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: loaded AOT Module for %s.", assembly->image->name);
2279 }
2280
2281 /*
2282 * mono_aot_register_module:
2283 *
2284 * This should be called by embedding code to register AOT modules statically linked
2285 * into the executable. AOT_INFO should be the value of the
2286 * 'mono_aot_module_<ASSEMBLY_NAME>_info' global symbol from the AOT module.
2287 */
2288 void
2289 mono_aot_register_module (gpointer *aot_info)
2290 {
2291 gpointer *globals;
2292 char *aname;
2293 MonoAotFileInfo *info = (MonoAotFileInfo *)aot_info;
2294
2295 g_assert (info->version == MONO_AOT_FILE_VERSION);
2296
2297 if (!(info->flags & MONO_AOT_FILE_FLAG_LLVM_ONLY)) {
2298 globals = (void **)info->globals;
2299 g_assert (globals);
2300 }
2301
2302 aname = (char *)info->assembly_name;
2303
2304 /* This could be called before startup */
2305 if (aot_modules)
2306 mono_aot_lock ();
2307
2308 if (!static_aot_modules)
2309 static_aot_modules = g_hash_table_new (g_str_hash, g_str_equal);
2310
2311 g_hash_table_insert (static_aot_modules, aname, info);
2312
2313 if (aot_modules)
2314 mono_aot_unlock ();
2315 }
2316
2317 void
2318 mono_aot_init (void)
2319 {
2320 mono_os_mutex_init_recursive (&aot_mutex);
2321 mono_os_mutex_init_recursive (&aot_page_mutex);
2322 aot_modules = g_hash_table_new (NULL, NULL);
2323
2324 #ifndef __native_client__
2325 mono_install_assembly_load_hook (load_aot_module, NULL);
2326 #endif
2327 mono_counters_register ("Async JIT info size", MONO_COUNTER_INT|MONO_COUNTER_JIT, &async_jit_info_size);
2328
2329 if (g_getenv ("MONO_LASTAOT"))
2330 mono_last_aot_method = atoi (g_getenv ("MONO_LASTAOT"));
2331 aot_cache_init ();
2332 }
2333
2334 void
2335 mono_aot_cleanup (void)
2336 {
2337 if (aot_jit_icall_hash)
2338 g_hash_table_destroy (aot_jit_icall_hash);
2339 if (aot_modules)
2340 g_hash_table_destroy (aot_modules);
2341 }
2342
2343 static gboolean
2344 decode_cached_class_info (MonoAotModule *module, MonoCachedClassInfo *info, guint8 *buf, guint8 **endbuf)
2345 {
2346 MonoError error;
2347 guint32 flags;
2348 MethodRef ref;
2349 gboolean res;
2350
2351 info->vtable_size = decode_value (buf, &buf);
2352 if (info->vtable_size == -1)
2353 /* Generic type */
2354 return FALSE;
2355 flags = decode_value (buf, &buf);
2356 info->ghcimpl = (flags >> 0) & 0x1;
2357 info->has_finalize = (flags >> 1) & 0x1;
2358 info->has_cctor = (flags >> 2) & 0x1;
2359 info->has_nested_classes = (flags >> 3) & 0x1;
2360 info->blittable = (flags >> 4) & 0x1;
2361 info->has_references = (flags >> 5) & 0x1;
2362 info->has_static_refs = (flags >> 6) & 0x1;
2363 info->no_special_static_fields = (flags >> 7) & 0x1;
2364 info->is_generic_container = (flags >> 8) & 0x1;
2365
2366 if (info->has_cctor) {
2367 res = decode_method_ref (module, &ref, buf, &buf, &error);
2368 mono_error_assert_ok (&error); /* FIXME don't swallow the error */
2369 if (!res)
2370 return FALSE;
2371 info->cctor_token = ref.token;
2372 }
2373 if (info->has_finalize) {
2374 res = decode_method_ref (module, &ref, buf, &buf, &error);
2375 mono_error_assert_ok (&error); /* FIXME don't swallow the error */
2376 if (!res)
2377 return FALSE;
2378 info->finalize_image = ref.image;
2379 info->finalize_token = ref.token;
2380 }
2381
2382 info->instance_size = decode_value (buf, &buf);
2383 info->class_size = decode_value (buf, &buf);
2384 info->packing_size = decode_value (buf, &buf);
2385 info->min_align = decode_value (buf, &buf);
2386
2387 *endbuf = buf;
2388
2389 return TRUE;
2390 }
2391
2392 gpointer
2393 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot, MonoError *error)
2394 {
2395 int i;
2396 MonoClass *klass = vtable->klass;
2397 MonoAotModule *amodule = (MonoAotModule *)klass->image->aot_module;
2398 guint8 *info, *p;
2399 MonoCachedClassInfo class_info;
2400 gboolean err;
2401 MethodRef ref;
2402 gboolean res;
2403 gpointer addr;
2404 MonoError inner_error;
2405
2406 mono_error_init (error);
2407
2408 if (MONO_CLASS_IS_INTERFACE (klass) || klass->rank || !amodule)
2409 return NULL;
2410
2411 info = &amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
2412 p = info;
2413
2414 err = decode_cached_class_info (amodule, &class_info, p, &p);
2415 if (!err)
2416 return NULL;
2417
2418 for (i = 0; i < slot; ++i) {
2419 decode_method_ref (amodule, &ref, p, &p, &inner_error);
2420 mono_error_cleanup (&inner_error); /* FIXME don't swallow the error */
2421 }
2422
2423 res = decode_method_ref (amodule, &ref, p, &p, &inner_error);
2424 mono_error_cleanup (&inner_error); /* FIXME don't swallow the error */
2425 if (!res)
2426 return NULL;
2427 if (ref.no_aot_trampoline)
2428 return NULL;
2429
2430 if (mono_metadata_token_index (ref.token) == 0 || mono_metadata_token_table (ref.token) != MONO_TABLE_METHOD)
2431 return NULL;
2432
2433 addr = mono_aot_get_method_from_token (domain, ref.image, ref.token, error);
2434 return addr;
2435 }
2436
2437 gboolean
2438 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
2439 {
2440 MonoAotModule *amodule = (MonoAotModule *)klass->image->aot_module;
2441 guint8 *p;
2442 gboolean err;
2443
2444 if (klass->rank || !klass->type_token || !amodule)
2445 return FALSE;
2446
2447 p = (guint8*)&amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
2448
2449 err = decode_cached_class_info (amodule, res, p, &p);
2450 if (!err)
2451 return FALSE;
2452
2453 return TRUE;
2454 }
2455
2456 /**
2457 * mono_aot_get_class_from_name:
2458 *
2459 * Obtains a MonoClass with a given namespace and a given name which is located in IMAGE,
2460 * using a cache stored in the AOT file.
2461 * Stores the resulting class in *KLASS if found, stores NULL otherwise.
2462 *
2463 * Returns: TRUE if the klass was found/not found in the cache, FALSE if no aot file was
2464 * found.
2465 */
2466 gboolean
2467 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
2468 {
2469 MonoAotModule *amodule = (MonoAotModule *)image->aot_module;
2470 guint16 *table, *entry;
2471 guint16 table_size;
2472 guint32 hash;
2473 char full_name_buf [1024];
2474 char *full_name;
2475 const char *name2, *name_space2;
2476 MonoTableInfo *t;
2477 guint32 cols [MONO_TYPEDEF_SIZE];
2478 GHashTable *nspace_table;
2479
2480 if (!amodule || !amodule->class_name_table)
2481 return FALSE;
2482
2483 amodule_lock (amodule);
2484
2485 *klass = NULL;
2486
2487 /* First look in the cache */
2488 if (!amodule->name_cache)
2489 amodule->name_cache = g_hash_table_new (g_str_hash, g_str_equal);
2490 nspace_table = (GHashTable *)g_hash_table_lookup (amodule->name_cache, name_space);
2491 if (nspace_table) {
2492 *klass = (MonoClass *)g_hash_table_lookup (nspace_table, name);
2493 if (*klass) {
2494 amodule_unlock (amodule);
2495 return TRUE;
2496 }
2497 }
2498
2499 table_size = amodule->class_name_table [0];
2500 table = amodule->class_name_table + 1;
2501
2502 if (name_space [0] == '\0')
2503 full_name = g_strdup_printf ("%s", name);
2504 else {
2505 if (strlen (name_space) + strlen (name) < 1000) {
2506 sprintf (full_name_buf, "%s.%s", name_space, name);
2507 full_name = full_name_buf;
2508 } else {
2509 full_name = g_strdup_printf ("%s.%s", name_space, name);
2510 }
2511 }
2512 hash = mono_metadata_str_hash (full_name) % table_size;
2513 if (full_name != full_name_buf)
2514 g_free (full_name);
2515
2516 entry = &table [hash * 2];
2517
2518 if (entry [0] != 0) {
2519 t = &image->tables [MONO_TABLE_TYPEDEF];
2520
2521 while (TRUE) {
2522 guint32 index = entry [0];
2523 guint32 next = entry [1];
2524 guint32 token = mono_metadata_make_token (MONO_TABLE_TYPEDEF, index);
2525
2526 name_table_accesses ++;
2527
2528 mono_metadata_decode_row (t, index - 1, cols, MONO_TYPEDEF_SIZE);
2529
2530 name2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
2531 name_space2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
2532
2533 if (!strcmp (name, name2) && !strcmp (name_space, name_space2)) {
2534 MonoError error;
2535 amodule_unlock (amodule);
2536 *klass = mono_class_get_checked (image, token, &error);
2537 if (!mono_error_ok (&error))
2538 mono_error_cleanup (&error); /* FIXME don't swallow the error */
2539
2540 /* Add to cache */
2541 if (*klass) {
2542 amodule_lock (amodule);
2543 nspace_table = (GHashTable *)g_hash_table_lookup (amodule->name_cache, name_space);
2544 if (!nspace_table) {
2545 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
2546 g_hash_table_insert (amodule->name_cache, (char*)name_space2, nspace_table);
2547 }
2548 g_hash_table_insert (nspace_table, (char*)name2, *klass);
2549 amodule_unlock (amodule);
2550 }
2551 return TRUE;
2552 }
2553
2554 if (next != 0) {
2555 entry = &table [next * 2];
2556 } else {
2557 break;
2558 }
2559 }
2560 }
2561
2562 amodule_unlock (amodule);
2563
2564 return TRUE;
2565 }
2566
2567 /* Compute the boundaries of the LLVM code for AMODULE. */
2568 static void
2569 compute_llvm_code_range (MonoAotModule *amodule, guint8 **code_start, guint8 **code_end)
2570 {
2571 guint8 *p;
2572 int version, fde_count;
2573 gint32 *table;
2574
2575 if (amodule->info.llvm_get_method) {
2576 gpointer (*get_method) (int) = (gpointer (*)(int))amodule->info.llvm_get_method;
2577
2578 *code_start = (guint8 *)get_method (-1);
2579 *code_end = (guint8 *)get_method (-2);
2580
2581 g_assert (*code_end > *code_start);
2582 return;
2583 }
2584
2585 g_assert (amodule->mono_eh_frame);
2586
2587 p = amodule->mono_eh_frame;
2588
2589 /* p points to data emitted by LLVM in DwarfException::EmitMonoEHFrame () */
2590
2591 /* Header */
2592 version = *p;
2593 g_assert (version == 3);
2594 p ++;
2595 p ++;
2596 p = (guint8 *)ALIGN_PTR_TO (p, 4);
2597
2598 fde_count = *(guint32*)p;
2599 p += 4;
2600 table = (gint32*)p;
2601
2602 if (fde_count > 0) {
2603 *code_start = (guint8 *)amodule->methods [table [0]];
2604 *code_end = (guint8*)amodule->methods [table [(fde_count - 1) * 2]] + table [fde_count * 2];
2605 } else {
2606 *code_start = NULL;
2607 *code_end = NULL;
2608 }
2609 }
2610
2611 static gboolean
2612 is_llvm_code (MonoAotModule *amodule, guint8 *code)
2613 {
2614 if ((guint8*)code >= amodule->llvm_code_start && (guint8*)code < amodule->llvm_code_end)
2615 return TRUE;
2616 else
2617 return FALSE;
2618 }
2619
2620 static gboolean
2621 is_thumb_code (MonoAotModule *amodule, guint8 *code)
2622 {
2623 if (is_llvm_code (amodule, code) && (amodule->info.flags & MONO_AOT_FILE_FLAG_LLVM_THUMB))
2624 return TRUE;
2625 else
2626 return FALSE;
2627 }
2628
2629 /*
2630 * decode_llvm_mono_eh_frame:
2631 *
2632 * Decode the EH information emitted by our modified LLVM compiler and construct a
2633 * MonoJitInfo structure from it.
2634 * LOCKING: Acquires the domain lock.
2635 */
2636 static MonoJitInfo*
2637 decode_llvm_mono_eh_frame (MonoAotModule *amodule, MonoDomain *domain,
2638 MonoMethod *method, guint8 *code, guint32 code_len,
2639 MonoJitExceptionInfo *clauses, int num_clauses,
2640 MonoJitInfoFlags flags,
2641 GSList **nesting,
2642 int *this_reg, int *this_offset)
2643 {
2644 guint8 *p, *code1, *code2;
2645 guint8 *fde, *cie, *code_start, *code_end;
2646 int version, fde_count;
2647 gint32 *table;
2648 int i, pos, left, right;
2649 MonoJitExceptionInfo *ei;
2650 guint32 fde_len, ei_len, nested_len, nindex;
2651 gpointer *type_info;
2652 MonoJitInfo *jinfo;
2653 MonoLLVMFDEInfo info;
2654
2655 if (!amodule->mono_eh_frame) {
2656 jinfo = (MonoJitInfo *)mono_domain_alloc0_lock_free (domain, mono_jit_info_size (flags, num_clauses, 0));
2657 mono_jit_info_init (jinfo, method, code, code_len, flags, num_clauses, 0);
2658 memcpy (jinfo->clauses, clauses, num_clauses * sizeof (MonoJitExceptionInfo));
2659 return jinfo;
2660 }
2661
2662 g_assert (amodule->mono_eh_frame && code);
2663
2664 p = amodule->mono_eh_frame;
2665
2666 /* p points to data emitted by LLVM in DwarfMonoException::EmitMonoEHFrame () */
2667
2668 /* Header */
2669 version = *p;
2670 g_assert (version == 3);
2671 p ++;
2672 /* func_encoding = *p; */
2673 p ++;
2674 p = (guint8 *)ALIGN_PTR_TO (p, 4);
2675
2676 fde_count = *(guint32*)p;
2677 p += 4;
2678 table = (gint32*)p;
2679
2680 /* There is +1 entry in the table */
2681 cie = p + ((fde_count + 1) * 8);
2682
2683 /* Binary search in the table to find the entry for code */
2684 left = 0;
2685 right = fde_count;
2686 while (TRUE) {
2687 pos = (left + right) / 2;
2688
2689 /* The table contains method index/fde offset pairs */
2690 g_assert (table [(pos * 2)] != -1);
2691 code1 = (guint8 *)amodule->methods [table [(pos * 2)]];
2692 if (pos + 1 == fde_count) {
2693 code2 = amodule->llvm_code_end;
2694 } else {
2695 g_assert (table [(pos + 1) * 2] != -1);
2696 code2 = (guint8 *)amodule->methods [table [(pos + 1) * 2]];
2697 }
2698
2699 if (code < code1)
2700 right = pos;
2701 else if (code >= code2)
2702 left = pos + 1;
2703 else
2704 break;
2705 }
2706
2707 code_start = (guint8 *)amodule->methods [table [(pos * 2)]];
2708 if (pos + 1 == fde_count) {
2709 /* The +1 entry in the table contains the length of the last method */
2710 int len = table [(pos + 1) * 2];
2711 code_end = code_start + len;
2712 } else {
2713 code_end = (guint8 *)amodule->methods [table [(pos + 1) * 2]];
2714 }
2715 if (!code_len)
2716 code_len = code_end - code_start;
2717
2718 g_assert (code >= code_start && code < code_end);
2719
2720 if (is_thumb_code (amodule, code_start))
2721 /* Clear thumb flag */
2722 code_start = (guint8*)(((mgreg_t)code_start) & ~1);
2723
2724 fde = amodule->mono_eh_frame + table [(pos * 2) + 1];
2725 /* This won't overflow because there is +1 entry in the table */
2726 fde_len = table [(pos * 2) + 2 + 1] - table [(pos * 2) + 1];
2727
2728 mono_unwind_decode_llvm_mono_fde (fde, fde_len, cie, code_start, &info);
2729 ei = info.ex_info;
2730 ei_len = info.ex_info_len;
2731 type_info = info.type_info;
2732 *this_reg = info.this_reg;
2733 *this_offset = info.this_offset;
2734
2735 /* Count number of nested clauses */
2736 nested_len = 0;
2737 for (i = 0; i < ei_len; ++i) {
2738 /* This might be unaligned */
2739 gint32 cindex1 = read32 (type_info [i]);
2740 GSList *l;
2741
2742 for (l = nesting [cindex1]; l; l = l->next)
2743 nested_len ++;
2744 }
2745
2746 /*
2747 * LLVM might represent one IL region with multiple regions, so have to
2748 * allocate a new JI.
2749 */
2750 jinfo =
2751 (MonoJitInfo *)mono_domain_alloc0_lock_free (domain, mono_jit_info_size (flags, ei_len + nested_len, 0));
2752 mono_jit_info_init (jinfo, method, code, code_len, flags, ei_len + nested_len, 0);
2753
2754 jinfo->unwind_info = mono_cache_unwind_info (info.unw_info, info.unw_info_len);
2755 /* This signals that unwind_info points to a normal cached unwind info */
2756 jinfo->from_aot = 0;
2757 jinfo->from_llvm = 1;
2758
2759 for (i = 0; i < ei_len; ++i) {
2760 /*
2761 * clauses contains the original IL exception info saved by the AOT
2762 * compiler, we have to combine that with the information produced by LLVM
2763 */
2764 /* The type_info entries contain IL clause indexes */
2765 int clause_index = read32 (type_info [i]);
2766 MonoJitExceptionInfo *jei = &jinfo->clauses [i];
2767 MonoJitExceptionInfo *orig_jei = &clauses [clause_index];
2768
2769 g_assert (clause_index < num_clauses);
2770 jei->flags = orig_jei->flags;
2771 jei->data.catch_class = orig_jei->data.catch_class;
2772
2773 jei->try_start = ei [i].try_start;
2774 jei->try_end = ei [i].try_end;
2775 jei->handler_start = ei [i].handler_start;
2776 jei->clause_index = clause_index;
2777
2778 if (is_thumb_code (amodule, (guint8 *)jei->try_start)) {
2779 jei->try_start = (void*)((mgreg_t)jei->try_start & ~1);
2780 jei->try_end = (void*)((mgreg_t)jei->try_end & ~1);
2781 /* Make sure we transition to thumb when a handler starts */
2782 jei->handler_start = (void*)((mgreg_t)jei->handler_start + 1);
2783 }
2784 }
2785
2786 /* See exception_cb () in mini-llvm.c as to why this is needed */
2787 nindex = ei_len;
2788 for (i = 0; i < ei_len; ++i) {
2789 gint32 cindex1 = read32 (type_info [i]);
2790 GSList *l;
2791
2792 for (l = nesting [cindex1]; l; l = l->next) {
2793 gint32 nesting_cindex = GPOINTER_TO_INT (l->data);
2794 MonoJitExceptionInfo *nesting_ei;
2795 MonoJitExceptionInfo *nesting_clause = &clauses [nesting_cindex];
2796
2797 nesting_ei = &jinfo->clauses [nindex];
2798 nindex ++;
2799
2800 memcpy (nesting_ei, &jinfo->clauses [i], sizeof (MonoJitExceptionInfo));
2801 nesting_ei->flags = nesting_clause->flags;
2802 nesting_ei->data.catch_class = nesting_clause->data.catch_class;
2803 nesting_ei->clause_index = nesting_cindex;
2804 }
2805 }
2806 g_assert (nindex == ei_len + nested_len);
2807
2808 return jinfo;
2809 }
2810
2811 static gpointer
2812 alloc0_jit_info_data (MonoDomain *domain, int size, gboolean async_context)
2813 {
2814 gpointer res;
2815
2816 if (async_context) {
2817 res = mono_domain_alloc0_lock_free (domain, size);
2818 InterlockedExchangeAdd (&async_jit_info_size, size);
2819 } else {
2820 res = mono_domain_alloc0 (domain, size);
2821 }
2822 return res;
2823 }
2824
2825 /*
2826 * LOCKING: Acquires the domain lock.
2827 * In async context, this is async safe.
2828 */
2829 static MonoJitInfo*
2830 decode_exception_debug_info (MonoAotModule *amodule, MonoDomain *domain,
2831 MonoMethod *method, guint8* ex_info,
2832 guint8 *code, guint32 code_len)
2833 {
2834 MonoError error;
2835 int i, buf_len, num_clauses, len;
2836 MonoJitInfo *jinfo;
2837 MonoJitInfoFlags flags = JIT_INFO_NONE;
2838 guint unwind_info, eflags;
2839 gboolean has_generic_jit_info, has_dwarf_unwind_info, has_clauses, has_seq_points, has_try_block_holes, has_arch_eh_jit_info;
2840 gboolean from_llvm, has_gc_map;
2841 guint8 *p;
2842 int try_holes_info_size, num_holes;
2843 int this_reg = 0, this_offset = 0;
2844 gboolean async;
2845
2846 /* Load the method info from the AOT file */
2847 async = mono_thread_info_is_async_context ();
2848
2849 p = ex_info;
2850 eflags = decode_value (p, &p);
2851 has_generic_jit_info = (eflags & 1) != 0;
2852 has_dwarf_unwind_info = (eflags & 2) != 0;
2853 has_clauses = (eflags & 4) != 0;
2854 has_seq_points = (eflags & 8) != 0;
2855 from_llvm = (eflags & 16) != 0;
2856 has_try_block_holes = (eflags & 32) != 0;
2857 has_gc_map = (eflags & 64) != 0;
2858 has_arch_eh_jit_info = (eflags & 128) != 0;
2859
2860 if (has_dwarf_unwind_info) {
2861 unwind_info = decode_value (p, &p);
2862 g_assert (unwind_info < (1 << 30));
2863 } else {
2864 unwind_info = decode_value (p, &p);
2865 }
2866 if (has_generic_jit_info)
2867 flags = (MonoJitInfoFlags)(flags | JIT_INFO_HAS_GENERIC_JIT_INFO);
2868
2869 if (has_try_block_holes) {
2870 num_holes = decode_value (p, &p);
2871 flags = (MonoJitInfoFlags)(flags | JIT_INFO_HAS_TRY_BLOCK_HOLES);
2872 try_holes_info_size = sizeof (MonoTryBlockHoleTableJitInfo) + num_holes * sizeof (MonoTryBlockHoleJitInfo);
2873 } else {
2874 num_holes = try_holes_info_size = 0;
2875 }
2876
2877 if (has_arch_eh_jit_info) {
2878 flags = (MonoJitInfoFlags)(flags | JIT_INFO_HAS_ARCH_EH_INFO);
2879 /* Overwrite the original code_len which includes alignment padding */
2880 code_len = decode_value (p, &p);
2881 }
2882
2883 /* Exception table */
2884 if (has_clauses)
2885 num_clauses = decode_value (p, &p);
2886 else
2887 num_clauses = 0;
2888
2889 if (from_llvm) {
2890 MonoJitExceptionInfo *clauses;
2891 GSList **nesting;
2892
2893 // FIXME: async
2894 g_assert (!async);
2895
2896 /*
2897 * Part of the info is encoded by the AOT compiler, the rest is in the .eh_frame
2898 * section.
2899 */
2900 clauses = g_new0 (MonoJitExceptionInfo, num_clauses);
2901 nesting = g_new0 (GSList*, num_clauses);
2902
2903 for (i = 0; i < num_clauses; ++i) {
2904 MonoJitExceptionInfo *ei = &clauses [i];
2905
2906 ei->flags = decode_value (p, &p);
2907
2908 if (decode_value (p, &p)) {
2909 ei->data.catch_class = decode_klass_ref (amodule, p, &p, &error);
2910 mono_error_cleanup (&error); /* FIXME don't swallow the error */
2911 }
2912
2913 ei->clause_index = i;
2914
2915 ei->try_offset = decode_value (p, &p);
2916 ei->try_len = decode_value (p, &p);
2917 ei->handler_offset = decode_value (p, &p);
2918 ei->handler_len = decode_value (p, &p);
2919
2920 /* Read the list of nesting clauses */
2921 while (TRUE) {
2922 int nesting_index = decode_value (p, &p);
2923 if (nesting_index == -1)
2924 break;
2925 nesting [i] = g_slist_prepend (nesting [i], GINT_TO_POINTER (nesting_index));
2926 }
2927 }
2928
2929 jinfo = decode_llvm_mono_eh_frame (amodule, domain, method, code, code_len, clauses, num_clauses, flags, nesting, &this_reg, &this_offset);
2930
2931 g_free (clauses);
2932 for (i = 0; i < num_clauses; ++i)
2933 g_slist_free (nesting [i]);
2934 g_free (nesting);
2935 } else {
2936 len = mono_jit_info_size (flags, num_clauses, num_holes);
2937 jinfo = (MonoJitInfo *)alloc0_jit_info_data (domain, len, async);
2938 mono_jit_info_init (jinfo, method, code, code_len, flags, num_clauses, num_holes);
2939
2940 for (i = 0; i < jinfo->num_clauses; ++i) {
2941 MonoJitExceptionInfo *ei = &jinfo->clauses [i];
2942
2943 ei->flags = decode_value (p, &p);
2944
2945 #ifdef MONO_CONTEXT_SET_LLVM_EXC_REG
2946 /* Not used for catch clauses */
2947 if (ei->flags != MONO_EXCEPTION_CLAUSE_NONE)
2948 ei->exvar_offset = decode_value (p, &p);
2949 #else
2950 ei->exvar_offset = decode_value (p, &p);
2951 #endif
2952
2953 if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER || ei->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
2954 ei->data.filter = code + decode_value (p, &p);
2955 else {
2956 int len = decode_value (p, &p);
2957
2958 if (len > 0) {
2959 if (async) {
2960 p += len;
2961 } else {
2962 ei->data.catch_class = decode_klass_ref (amodule, p, &p, &error);
2963 mono_error_cleanup (&error); /* FIXME don't swallow the error */
2964 }
2965 }
2966 }
2967
2968 ei->try_start = code + decode_value (p, &p);
2969 ei->try_end = code + decode_value (p, &p);
2970 ei->handler_start = code + decode_value (p, &p);
2971 }
2972
2973 jinfo->unwind_info = unwind_info;
2974 jinfo->domain_neutral = 0;
2975 jinfo->from_aot = 1;
2976 }
2977
2978 if (has_try_block_holes) {
2979 MonoTryBlockHoleTableJitInfo *table;
2980
2981 g_assert (jinfo->has_try_block_holes);
2982
2983 table = mono_jit_info_get_try_block_hole_table_info (jinfo);
2984 g_assert (table);
2985
2986 table->num_holes = (guint16)num_holes;
2987 for (i = 0; i < num_holes; ++i) {
2988 MonoTryBlockHoleJitInfo *hole = &table->holes [i];
2989 hole->clause = decode_value (p, &p);
2990 hole->length = decode_value (p, &p);
2991 hole->offset = decode_value (p, &p);
2992 }
2993 }
2994
2995 if (has_arch_eh_jit_info) {
2996 MonoArchEHJitInfo *eh_info;
2997
2998 g_assert (jinfo->has_arch_eh_info);
2999
3000 eh_info = mono_jit_info_get_arch_eh_info (jinfo);
3001 eh_info->stack_size = decode_value (p, &p);
3002 eh_info->epilog_size = decode_value (p, &p);
3003 }
3004
3005 if (async) {
3006 /* The rest is not needed in async mode */
3007 jinfo->async = TRUE;
3008 jinfo->d.aot_info = amodule;
3009 // FIXME: Cache
3010 return jinfo;
3011 }
3012
3013 if (has_generic_jit_info) {
3014 MonoGenericJitInfo *gi;
3015 int len;
3016
3017 g_assert (jinfo->has_generic_jit_info);
3018
3019 gi = mono_jit_info_get_generic_jit_info (jinfo);
3020 g_assert (gi);
3021
3022 gi->nlocs = decode_value (p, &p);
3023 if (gi->nlocs) {
3024 gi->locations = (MonoDwarfLocListEntry *)alloc0_jit_info_data (domain, gi->nlocs * sizeof (MonoDwarfLocListEntry), async);
3025 for (i = 0; i < gi->nlocs; ++i) {
3026 MonoDwarfLocListEntry *entry = &gi->locations [i];
3027
3028 entry->is_reg = decode_value (p, &p);
3029 entry->reg = decode_value (p, &p);
3030 if (!entry->is_reg)
3031 entry->offset = decode_value (p, &p);
3032 if (i > 0)
3033 entry->from = decode_value (p, &p);
3034 entry->to = decode_value (p, &p);
3035 }
3036 gi->has_this = 1;
3037 } else {
3038 if (from_llvm) {
3039 gi->has_this = this_reg != -1;
3040 gi->this_reg = this_reg;
3041 gi->this_offset = this_offset;
3042 } else {
3043 gi->has_this = decode_value (p, &p);
3044 gi->this_reg = decode_value (p, &p);
3045 gi->this_offset = decode_value (p, &p);
3046 }
3047 }
3048
3049 len = decode_value (p, &p);
3050 if (async) {
3051 p += len;
3052 } else {
3053 jinfo->d.method = decode_resolve_method_ref (amodule, p, &p, &error);
3054 mono_error_cleanup (&error); /* FIXME don't swallow the error */
3055 }
3056
3057 gi->generic_sharing_context = alloc0_jit_info_data (domain, sizeof (MonoGenericSharingContext), async);
3058 if (decode_value (p, &p)) {
3059 /* gsharedvt */
3060 MonoGenericSharingContext *gsctx = gi->generic_sharing_context;
3061
3062 gsctx->is_gsharedvt = TRUE;
3063 }
3064 }
3065
3066 if (method && has_seq_points) {
3067 MonoSeqPointInfo *seq_points;
3068
3069 p += mono_seq_point_info_read (&seq_points, p, FALSE);
3070
3071 mono_domain_lock (domain);
3072 /* This could be set already since this function can be called more than once for the same method */
3073 if (!g_hash_table_lookup (domain_jit_info (domain)->seq_points, method))
3074 g_hash_table_insert (domain_jit_info (domain)->seq_points, method, seq_points);
3075 else
3076 mono_seq_point_info_free (seq_points);
3077 mono_domain_unlock (domain);
3078 }
3079
3080 /* Load debug info */
3081 buf_len = decode_value (p, &p);
3082 if (!async)
3083 mono_debug_add_aot_method (domain, method, code, p, buf_len);
3084 p += buf_len;
3085
3086 if (has_gc_map) {
3087 int map_size = decode_value (p, &p);
3088 /* The GC map requires 4 bytes of alignment */
3089 while ((guint64)(gsize)p % 4)
3090 p ++;
3091 jinfo->gc_info = p;
3092 p += map_size;
3093 }
3094
3095 if (amodule != jinfo->d.method->klass->image->aot_module) {
3096 mono_aot_lock ();
3097 if (!ji_to_amodule)
3098 ji_to_amodule = g_hash_table_new (NULL, NULL);
3099 g_hash_table_insert (ji_to_amodule, jinfo, amodule);
3100 mono_aot_unlock ();
3101 }
3102
3103 return jinfo;
3104 }
3105
3106 static gboolean
3107 amodule_contains_code_addr (MonoAotModule *amodule, guint8 *code)
3108 {
3109 return (code >= amodule->jit_code_start && code <= amodule->jit_code_end) ||
3110 (code >= amodule->llvm_code_start && code <= amodule->llvm_code_end);
3111 }
3112
3113 /*
3114 * mono_aot_get_unwind_info:
3115 *
3116 * Return a pointer to the DWARF unwind info belonging to JI.
3117 */
3118 guint8*
3119 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
3120 {
3121 MonoAotModule *amodule;
3122 guint8 *p;
3123 guint8 *code = (guint8 *)ji->code_start;
3124
3125 if (ji->async)
3126 amodule = (MonoAotModule *)ji->d.aot_info;
3127 else
3128 amodule = (MonoAotModule *)jinfo_get_method (ji)->klass->image->aot_module;
3129 g_assert (amodule);
3130 g_assert (ji->from_aot);
3131
3132 if (!amodule_contains_code_addr (amodule, code)) {
3133 /* ji belongs to a different aot module than amodule */
3134 mono_aot_lock ();
3135 g_assert (ji_to_amodule);
3136 amodule = (MonoAotModule *)g_hash_table_lookup (ji_to_amodule, ji);
3137 g_assert (amodule);
3138 g_assert (amodule_contains_code_addr (amodule, code));
3139 mono_aot_unlock ();
3140 }
3141
3142 p = amodule->unwind_info + ji->unwind_info;
3143 *unwind_info_len = decode_value (p, &p);
3144 return p;
3145 }
3146
3147 static void
3148 msort_method_addresses_internal (gpointer *array, int *indexes, int lo, int hi, gpointer *scratch, int *scratch_indexes)
3149 {
3150 int mid = (lo + hi) / 2;
3151 int i, t_lo, t_hi;
3152
3153 if (lo >= hi)
3154 return;
3155
3156 if (hi - lo < 32) {
3157 for (i = lo; i < hi; ++i)
3158 if (array [i] > array [i + 1])
3159 break;
3160 if (i == hi)
3161 /* Already sorted */
3162 return;
3163 }
3164
3165 msort_method_addresses_internal (array, indexes, lo, mid, scratch, scratch_indexes);
3166 msort_method_addresses_internal (array, indexes, mid + 1, hi, scratch, scratch_indexes);
3167
3168 if (array [mid] < array [mid + 1])
3169 return;
3170
3171 /* Merge */
3172 t_lo = lo;
3173 t_hi = mid + 1;
3174 for (i = lo; i <= hi; i ++) {
3175 if (t_lo <= mid && ((t_hi > hi) || array [t_lo] < array [t_hi])) {
3176 scratch [i] = array [t_lo];
3177 scratch_indexes [i] = indexes [t_lo];
3178 t_lo ++;
3179 } else {
3180 scratch [i] = array [t_hi];
3181 scratch_indexes [i] = indexes [t_hi];
3182 t_hi ++;
3183 }
3184 }
3185 for (i = lo; i <= hi; ++i) {
3186 array [i] = scratch [i];
3187 indexes [i] = scratch_indexes [i];
3188 }
3189 }
3190
3191 static void
3192 msort_method_addresses (gpointer *array, int *indexes, int len)
3193 {
3194 gpointer *scratch;
3195 int *scratch_indexes;
3196
3197 scratch = g_new (gpointer, len);
3198 scratch_indexes = g_new (int, len);
3199 msort_method_addresses_internal (array, indexes, 0, len - 1, scratch, scratch_indexes);
3200 g_free (scratch);
3201 g_free (scratch_indexes);
3202 }
3203
3204 /*
3205 * mono_aot_find_jit_info:
3206 *
3207 * In async context, the resulting MonoJitInfo will not have its method field set, and it will not be added
3208 * to the jit info tables.
3209 * FIXME: Large sizes in the lock free allocator
3210 */
3211 MonoJitInfo *
3212 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
3213 {
3214 MonoError error;
3215 int pos, left, right, code_len;
3216 int method_index, table_len;
3217 guint32 token;
3218 MonoAotModule *amodule = (MonoAotModule *)image->aot_module;
3219 MonoMethod *method = NULL;
3220 MonoJitInfo *jinfo;
3221 guint8 *code, *ex_info, *p;
3222 guint32 *table;
3223 int nmethods;
3224 gpointer *methods;
3225 guint8 *code1, *code2;
3226 int methods_len, i;
3227 gboolean async;
3228
3229 if (!amodule)
3230 return NULL;
3231
3232 nmethods = amodule->info.nmethods;
3233
3234 if (domain != mono_get_root_domain ())
3235 /* FIXME: */
3236 return NULL;
3237
3238 if (!amodule_contains_code_addr (amodule, (guint8 *)addr))
3239 return NULL;
3240
3241 async = mono_thread_info_is_async_context ();
3242
3243 /* Compute a sorted table mapping code to method indexes. */
3244 if (!amodule->sorted_methods) {
3245 // FIXME: async
3246 gpointer *methods = g_new0 (gpointer, nmethods);
3247 int *method_indexes = g_new0 (int, nmethods);
3248 int methods_len = 0;
3249
3250 for (i = 0; i < nmethods; ++i) {
3251 /* Skip the -1 entries to speed up sorting */
3252 if (amodule->methods [i] == GINT_TO_POINTER (-1))
3253 continue;
3254 methods [methods_len] = amodule->methods [i];
3255 method_indexes [methods_len] = i;
3256 methods_len ++;
3257 }
3258 /* Use a merge sort as this is mostly sorted */
3259 msort_method_addresses (methods, method_indexes, methods_len);
3260 for (i = 0; i < methods_len -1; ++i)
3261 g_assert (methods [i] <= methods [i + 1]);
3262 amodule->sorted_methods_len = methods_len;
3263 if (InterlockedCompareExchangePointer ((gpointer*)&amodule->sorted_methods, methods, NULL) != NULL)
3264 /* Somebody got in before us */
3265 g_free (methods);
3266 if (InterlockedCompareExchangePointer ((gpointer*)&amodule->sorted_method_indexes, method_indexes, NULL) != NULL)
3267 /* Somebody got in before us */
3268 g_free (method_indexes);
3269 }
3270
3271 /* Binary search in the sorted_methods table */
3272 methods = amodule->sorted_methods;
3273 methods_len = amodule->sorted_methods_len;
3274 code = (guint8 *)addr;
3275 left = 0;
3276 right = methods_len;
3277 while (TRUE) {
3278 pos = (left + right) / 2;
3279
3280 code1 = (guint8 *)methods [pos];
3281 if (pos + 1 == methods_len) {
3282 if (code1 >= amodule->jit_code_start && code1 < amodule->jit_code_end)
3283 code2 = amodule->jit_code_end;
3284 else
3285 code2 = amodule->llvm_code_end;
3286 } else {
3287 code2 = (guint8 *)methods [pos + 1];
3288 }
3289
3290 if (code < code1)
3291 right = pos;
3292 else if (code >= code2)
3293 left = pos + 1;
3294 else
3295 break;
3296 }
3297
3298 g_assert (addr >= methods [pos]);
3299 if (pos + 1 < methods_len)
3300 g_assert (addr < methods [pos + 1]);
3301 method_index = amodule->sorted_method_indexes [pos];
3302
3303 /* In async mode, jinfo is not added to the normal jit info table, so have to cache it ourselves */
3304 if (async) {
3305 JitInfoMap *table = amodule->async_jit_info_table;
3306 int len;
3307
3308 if (table) {
3309 len = table [0].method_index;
3310 for (i = 1; i < len; ++i) {
3311 if (table [i].method_index == method_index)
3312 return table [i].jinfo;
3313 }
3314 }
3315 }
3316
3317 code = (guint8 *)amodule->methods [method_index];
3318 ex_info = &amodule->blob [mono_aot_get_offset (amodule->ex_info_offsets, method_index)];
3319
3320 if (pos == methods_len - 1) {
3321 if (code >= amodule->jit_code_start && code < amodule->jit_code_end)
3322 code_len = amodule->jit_code_end - code;
3323 else
3324 code_len = amodule->llvm_code_end - code;
3325 } else {
3326 code_len = (guint8*)methods [pos + 1] - (guint8*)methods [pos];
3327 }
3328
3329 g_assert ((guint8*)code <= (guint8*)addr && (guint8*)addr < (guint8*)code + code_len);
3330
3331 /* Might be a wrapper/extra method */
3332 if (!async) {
3333 if (amodule->extra_methods) {
3334 amodule_lock (amodule);
3335 method = (MonoMethod *)g_hash_table_lookup (amodule->extra_methods, GUINT_TO_POINTER (method_index));
3336 amodule_unlock (amodule);
3337 } else {
3338 method = NULL;
3339 }
3340
3341 if (!method) {
3342 if (method_index >= image->tables [MONO_TABLE_METHOD].rows) {
3343 /*
3344 * This is hit for extra methods which are called directly, so they are
3345 * not in amodule->extra_methods.
3346 */
3347 table_len = amodule->extra_method_info_offsets [0];
3348 table = amodule->extra_method_info_offsets + 1;
3349 left = 0;
3350 right = table_len;
3351 pos = 0;
3352
3353 /* Binary search */
3354 while (TRUE) {
3355 pos = ((left + right) / 2);
3356
3357 g_assert (pos < table_len);
3358
3359 if (table [pos * 2] < method_index)
3360 left = pos + 1;
3361 else if (table [pos * 2] > method_index)
3362 right = pos;
3363 else
3364 break;
3365 }
3366
3367 p = amodule->blob + table [(pos * 2) + 1];
3368 method = decode_resolve_method_ref (amodule, p, &p, &error);
3369 mono_error_cleanup (&error); /* FIXME don't swallow the error */
3370 if (!method)
3371 /* Happens when a random address is passed in which matches a not-yey called wrapper encoded using its name */
3372 return NULL;
3373 } else {
3374 MonoError error;
3375 token = mono_metadata_make_token (MONO_TABLE_METHOD, method_index + 1);
3376 method = mono_get_method_checked (image, token, NULL, NULL, &error);
3377 if (!method)
3378 g_error ("AOT runtime could not load method due to %s", mono_error_get_message (&error)); /* FIXME don't swallow the error */
3379 }
3380 }
3381 /* FIXME: */
3382 g_assert (method);
3383 }
3384
3385 //printf ("F: %s\n", mono_method_full_name (method, TRUE));
3386
3387 jinfo = decode_exception_debug_info (amodule, domain, method, ex_info, code, code_len);
3388
3389 g_assert ((guint8*)addr >= (guint8*)jinfo->code_start);
3390
3391 /* Add it to the normal JitInfo tables */
3392 if (async) {
3393 JitInfoMap *old_table, *new_table;
3394 int len;
3395
3396 /*
3397 * Use a simple inmutable table with linear search to cache async jit info entries.
3398 * This assumes that the number of entries is small.
3399 */
3400 while (TRUE) {
3401 /* Copy the table, adding a new entry at the end */
3402 old_table = amodule->async_jit_info_table;
3403 if (old_table)
3404 len = old_table[0].method_index;
3405 else
3406 len = 1;
3407 new_table = (JitInfoMap *)alloc0_jit_info_data (domain, (len + 1) * sizeof (JitInfoMap), async);
3408 if (old_table)
3409 memcpy (new_table, old_table, len * sizeof (JitInfoMap));
3410 new_table [0].method_index = len + 1;
3411 new_table [len].method_index = method_index;
3412 new_table [len].jinfo = jinfo;
3413 /* Publish it */
3414 mono_memory_barrier ();
3415 if (InterlockedCompareExchangePointer ((volatile gpointer *)&amodule->async_jit_info_table, new_table, old_table) == old_table)
3416 break;
3417 }
3418 } else {
3419 mono_jit_info_table_add (domain, jinfo);
3420 }
3421
3422 if ((guint8*)addr >= (guint8*)jinfo->code_start + jinfo->code_size)
3423 /* addr is in the padding between methods, see the adjustment of code_size in decode_exception_debug_info () */
3424 return NULL;
3425
3426 return jinfo;
3427 }
3428
3429 static gboolean
3430 decode_patch (MonoAotModule *aot_module, MonoMemPool *mp, MonoJumpInfo *ji, guint8 *buf, guint8 **endbuf)
3431 {
3432 MonoError error;
3433 guint8 *p = buf;
3434 gpointer *table;
3435 MonoImage *image;
3436 int i;
3437
3438 switch (ji->type) {
3439 case MONO_PATCH_INFO_METHOD:
3440 case MONO_PATCH_INFO_METHOD_JUMP:
3441 case MONO_PATCH_INFO_ICALL_ADDR:
3442 case MONO_PATCH_INFO_ICALL_ADDR_CALL:
3443 case MONO_PATCH_INFO_METHOD_RGCTX:
3444 case MONO_PATCH_INFO_METHOD_CODE_SLOT: {
3445 MethodRef ref;
3446 gboolean res;
3447
3448 res = decode_method_ref (aot_module, &ref, p, &p, &error);
3449 mono_error_assert_ok (&error); /* FIXME don't swallow the error */
3450 if (!res)
3451 goto cleanup;
3452
3453 if (!ref.method && !mono_aot_only && !ref.no_aot_trampoline && (ji->type == MONO_PATCH_INFO_METHOD) && (mono_metadata_token_table (ref.token) == MONO_TABLE_METHOD)) {
3454 ji->data.target = mono_create_ftnptr (mono_domain_get (), mono_create_jit_trampoline_from_token (ref.image, ref.token));
3455 ji->type = MONO_PATCH_INFO_ABS;
3456 }
3457 else {
3458 if (ref.method) {
3459 ji->data.method = ref.method;
3460 }else {
3461 MonoError error;
3462 ji->data.method = mono_get_method_checked (ref.image, ref.token, NULL, NULL, &error);
3463 if (!ji->data.method)
3464 g_error ("AOT Runtime could not load method due to %s", mono_error_get_message (&error)); /* FIXME don't swallow the error */
3465 }
3466 g_assert (ji->data.method);
3467 mono_class_init (ji->data.method->klass);
3468 }
3469 break;
3470 }
3471 case MONO_PATCH_INFO_INTERNAL_METHOD:
3472 case MONO_PATCH_INFO_JIT_ICALL_ADDR: {
3473 guint32 len = decode_value (p, &p);
3474
3475 ji->data.name = (char*)p;
3476 p += len + 1;
3477 break;
3478 }
3479 case MONO_PATCH_INFO_METHODCONST:
3480 /* Shared */
3481 ji->data.method = decode_resolve_method_ref (aot_module, p, &p, &error);
3482 mono_error_cleanup (&error); /* FIXME don't swallow the error */
3483 if (!ji->data.method)
3484 goto cleanup;
3485 break;
3486 case MONO_PATCH_INFO_VTABLE:
3487 case MONO_PATCH_INFO_CLASS:
3488 case MONO_PATCH_INFO_IID:
3489 case MONO_PATCH_INFO_ADJUSTED_IID:
3490 /* Shared */
3491 ji->data.klass = decode_klass_ref (aot_module, p, &p, &error);
3492 mono_error_cleanup (&error); /* FIXME don't swallow the error */
3493 if (!ji->data.klass)
3494 goto cleanup;
3495 break;
3496 case MONO_PATCH_INFO_DELEGATE_TRAMPOLINE:
3497 ji->data.del_tramp = (MonoDelegateClassMethodPair *)mono_mempool_alloc0 (mp, sizeof (MonoDelegateClassMethodPair));
3498 ji->data.del_tramp->klass = decode_klass_ref (aot_module, p, &p, &error);
3499 mono_error_cleanup (&error); /* FIXME don't swallow the error */
3500 if (!ji->data.del_tramp->klass)
3501 goto cleanup;
3502 if (decode_value (p, &p)) {
3503 ji->data.del_tramp->method = decode_resolve_method_ref (aot_module, p, &p, &error);
3504 mono_error_cleanup (&error); /* FIXME don't swallow the error */
3505 if (!ji->data.del_tramp->method)
3506 goto cleanup;
3507 }
3508 ji->data.del_tramp->is_virtual = decode_value (p, &p) ? TRUE : FALSE;
3509 break;
3510 case MONO_PATCH_INFO_IMAGE:
3511 ji->data.image = load_image (aot_module, decode_value (p, &p), &error);
3512 mono_error_cleanup (&error); /* FIXME don't swallow the error */
3513 if (!ji->data.image)
3514 goto cleanup;
3515 break;
3516 case MONO_PATCH_INFO_FIELD:
3517 case MONO_PATCH_INFO_SFLDA:
3518 /* Shared */
3519 ji->data.field = decode_field_info (aot_module, p, &p);
3520 if (!ji->data.field)
3521 goto cleanup;
3522 break;
3523 case MONO_PATCH_INFO_SWITCH:
3524 ji->data.table = (MonoJumpInfoBBTable *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoBBTable));
3525 ji->data.table->table_size = decode_value (p, &p);
3526 table = (void **)mono_domain_alloc (mono_domain_get (), sizeof (gpointer) * ji->data.table->table_size);
3527 ji->data.table->table = (MonoBasicBlock**)table;
3528 for (i = 0; i < ji->data.table->table_size; i++)
3529 table [i] = (gpointer)(gssize)decode_value (p, &p);
3530 break;
3531 case MONO_PATCH_INFO_R4: {
3532 guint32 val;
3533
3534 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (float));
3535 val = decode_value (p, &p);
3536 *(float*)ji->data.target = *(float*)&val;
3537 break;
3538 }
3539 case MONO_PATCH_INFO_R8: {
3540 guint32 val [2];
3541 guint64 v;
3542
3543 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (double));
3544
3545 val [0] = decode_value (p, &p);
3546 val [1] = decode_value (p, &p);
3547 v = ((guint64)val [1] << 32) | ((guint64)val [0]);
3548 *(double*)ji->data.target = *(double*)&v;
3549 break;
3550 }
3551 case MONO_PATCH_INFO_LDSTR:
3552 image = load_image (aot_module, decode_value (p, &p), &error);
3553 mono_error_cleanup (&error); /* FIXME don't swallow the error */
3554 if (!image)
3555 goto cleanup;
3556 ji->data.token = mono_jump_info_token_new (mp, image, MONO_TOKEN_STRING + decode_value (p, &p));
3557 break;
3558 case MONO_PATCH_INFO_RVA:
3559 case MONO_PATCH_INFO_DECLSEC:
3560 case MONO_PATCH_INFO_LDTOKEN:
3561 case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
3562 /* Shared */
3563 image = load_image (aot_module, decode_value (p, &p), &error);
3564 mono_error_cleanup (&error); /* FIXME don't swallow the error */
3565 if (!image)
3566 goto cleanup;
3567 ji->data.token = mono_jump_info_token_new (mp, image, decode_value (p, &p));
3568
3569 ji->data.token->has_context = decode_value (p, &p);
3570 if (ji->data.token->has_context) {
3571 gboolean res = decode_generic_context (aot_module, &ji->data.token->context, p, &p, &error);
3572 mono_error_cleanup (&error); /* FIXME don't swallow the error */
3573 if (!res)
3574 goto cleanup;
3575 }
3576 break;
3577 case MONO_PATCH_INFO_EXC_NAME:
3578 ji->data.klass = decode_klass_ref (aot_module, p, &p, &error);
3579 mono_error_cleanup (&error); /* FIXME don't swallow the error */
3580 if (!ji->data.klass)
3581 goto cleanup;
3582 ji->data.name = ji->data.klass->name;
3583 break;
3584 case MONO_PATCH_INFO_METHOD_REL:
3585 ji->data.offset = decode_value (p, &p);
3586 break;
3587 case MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG:
3588 case MONO_PATCH_INFO_GC_CARD_TABLE_ADDR:
3589 case MONO_PATCH_INFO_GC_NURSERY_START:
3590 case MONO_PATCH_INFO_GC_NURSERY_BITS:
3591 break;
3592 case MONO_PATCH_INFO_CASTCLASS_CACHE:
3593 ji->data.index = decode_value (p, &p);
3594 break;
3595 case MONO_PATCH_INFO_RGCTX_FETCH:
3596 case MONO_PATCH_INFO_RGCTX_SLOT_INDEX: {
3597 gboolean res;
3598 MonoJumpInfoRgctxEntry *entry;
3599 guint32 offset, val;
3600 guint8 *p2;
3601
3602 offset = decode_value (p, &p);
3603 val = decode_value (p, &p);
3604
3605 entry = (MonoJumpInfoRgctxEntry *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
3606 p2 = aot_module->blob + offset;
3607 entry->method = decode_resolve_method_ref (aot_module, p2, &p2, &error);
3608 entry->in_mrgctx = ((val & 1) > 0) ? TRUE : FALSE;
3609 entry->info_type = (MonoRgctxInfoType)((val >> 1) & 0xff);
3610 entry->data = (MonoJumpInfo *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
3611 entry->data->type = (MonoJumpInfoType)((val >> 9) & 0xff);
3612 mono_error_cleanup (&error); /* FIXME don't swallow the error */
3613
3614 res = decode_patch (aot_module, mp, entry->data, p, &p);
3615 if (!res)
3616 goto cleanup;
3617 ji->data.rgctx_entry = entry;
3618 break;
3619 }
3620 case MONO_PATCH_INFO_SEQ_POINT_INFO:
3621 case MONO_PATCH_INFO_AOT_MODULE:
3622 case MONO_PATCH_INFO_MSCORLIB_GOT_ADDR:
3623 break;
3624 case MONO_PATCH_INFO_SIGNATURE:
3625 case MONO_PATCH_INFO_GSHAREDVT_IN_WRAPPER:
3626 ji->data.target = decode_signature (aot_module, p, &p);
3627 break;
3628 case MONO_PATCH_INFO_GSHAREDVT_CALL: {
3629 MonoJumpInfoGSharedVtCall *info = (MonoJumpInfoGSharedVtCall *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoGSharedVtCall));
3630 info->sig = decode_signature (aot_module, p, &p);
3631 g_assert (info->sig);
3632 info->method = decode_resolve_method_ref (aot_module, p, &p, &error);
3633 mono_error_assert_ok (&error); /* FIXME don't swallow the error */
3634
3635 ji->data.target = info;
3636 break;
3637 }
3638 case MONO_PATCH_INFO_GSHAREDVT_METHOD: {
3639 MonoGSharedVtMethodInfo *info = (MonoGSharedVtMethodInfo *)mono_mempool_alloc0 (mp, sizeof (MonoGSharedVtMethodInfo));
3640 int i;
3641
3642 info->method = decode_resolve_method_ref (aot_module, p, &p, &error);
3643 mono_error_assert_ok (&error); /* FIXME don't swallow the error */
3644
3645 info->num_entries = decode_value (p, &p);
3646 info->count_entries = info->num_entries;
3647 info->entries = (MonoRuntimeGenericContextInfoTemplate *)mono_mempool_alloc0 (mp, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->num_entries);
3648 for (i = 0; i < info->num_entries; ++i) {
3649 MonoRuntimeGenericContextInfoTemplate *template_ = &info->entries [i];
3650
3651 template_->info_type = (MonoRgctxInfoType)decode_value (p, &p);
3652 switch (mini_rgctx_info_type_to_patch_info_type (template_->info_type)) {
3653 case MONO_PATCH_INFO_CLASS: {
3654 MonoClass *klass = decode_klass_ref (aot_module, p, &p, &error);
3655 mono_error_cleanup (&error); /* FIXME don't swallow the error */
3656 if (!klass)
3657 goto cleanup;
3658 template_->data = &klass->byval_arg;
3659 break;
3660 }
3661 case MONO_PATCH_INFO_FIELD:
3662 template_->data = decode_field_info (aot_module, p, &p);
3663 if (!template_->data)
3664 goto cleanup;
3665 break;
3666 default:
3667 g_assert_not_reached ();
3668 break;
3669 }
3670 }
3671 ji->data.target = info;
3672 break;
3673 }
3674 case MONO_PATCH_INFO_LDSTR_LIT: {
3675 int len = decode_value (p, &p);
3676 char *s;
3677
3678 s = (char *)mono_mempool_alloc0 (mp, len + 1);
3679 memcpy (s, p, len + 1);
3680 p += len + 1;
3681
3682 ji->data.target = s;
3683 break;
3684 }
3685 case MONO_PATCH_INFO_VIRT_METHOD: {
3686 MonoJumpInfoVirtMethod *info = (MonoJumpInfoVirtMethod *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoVirtMethod));
3687
3688 info->klass = decode_klass_ref (aot_module, p, &p, &error);
3689 mono_error_assert_ok (&error); /* FIXME don't swallow the error */
3690
3691 info->method = decode_resolve_method_ref (aot_module, p, &p, &error);
3692 mono_error_assert_ok (&error); /* FIXME don't swallow the error */
3693
3694 ji->data.target = info;
3695 break;
3696 }
3697 case MONO_PATCH_INFO_GC_SAFE_POINT_FLAG:
3698 case MONO_PATCH_INFO_JIT_THREAD_ATTACH:
3699 break;
3700 case MONO_PATCH_INFO_GET_TLS_TRAMP:
3701 case MONO_PATCH_INFO_SET_TLS_TRAMP:
3702 case MONO_PATCH_INFO_AOT_JIT_INFO:
3703 ji->data.index = decode_value (p, &p);
3704 break;
3705 default:
3706 g_warning ("unhandled type %d", ji->type);
3707 g_assert_not_reached ();
3708 }
3709
3710 *endbuf = p;
3711
3712 return TRUE;
3713
3714 cleanup:
3715 return FALSE;
3716 }
3717
3718 /*
3719 * decode_patches:
3720 *
3721 * Decode a list of patches identified by the got offsets in GOT_OFFSETS. Return an array of
3722 * MonoJumpInfo structures allocated from MP.
3723 */
3724 static MonoJumpInfo*
3725 decode_patches (MonoAotModule *amodule, MonoMemPool *mp, int n_patches, gboolean llvm, guint32 *got_offsets)
3726 {
3727 MonoJumpInfo *patches;
3728 MonoJumpInfo *ji;
3729 gpointer *got;
3730 guint32 *got_info_offsets;
3731 int i;
3732 gboolean res;
3733
3734 if (llvm) {
3735 got = amodule->llvm_got;
3736 got_info_offsets = (guint32 *)amodule->llvm_got_info_offsets;
3737 } else {
3738 got = amodule->got;
3739 got_info_offsets = (guint32 *)amodule->got_info_offsets;
3740 }
3741
3742 patches = (MonoJumpInfo *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo) * n_patches);
3743 for (i = 0; i < n_patches; ++i) {
3744 guint8 *p = amodule->blob + mono_aot_get_offset (got_info_offsets, got_offsets [i]);
3745
3746 ji = &patches [i];
3747 ji->type = (MonoJumpInfoType)decode_value (p, &p);
3748
3749 /* See load_method () for SFLDA */
3750 if (got && got [got_offsets [i]] && ji->type != MONO_PATCH_INFO_SFLDA) {
3751 /* Already loaded */
3752 } else {
3753 res = decode_patch (amodule, mp, ji, p, &p);
3754 if (!res)
3755 return NULL;
3756 }
3757 }
3758
3759 return patches;
3760 }
3761
3762 static MonoJumpInfo*
3763 load_patch_info (MonoAotModule *amodule, MonoMemPool *mp, int n_patches,
3764 gboolean llvm, guint32 **got_slots,
3765 guint8 *buf, guint8 **endbuf)
3766 {
3767 MonoJumpInfo *patches;
3768 int pindex;
3769 guint8 *p;
3770
3771 p = buf;
3772
3773 *got_slots = (guint32 *)g_malloc (sizeof (guint32) * n_patches);
3774 for (pindex = 0; pindex < n_patches; ++pindex) {
3775 (*got_slots)[pindex] = decode_value (p, &p);
3776 }
3777
3778 patches = decode_patches (amodule, mp, n_patches, llvm, *got_slots);
3779 if (!patches) {
3780 g_free (*got_slots);
3781 *got_slots = NULL;
3782 return NULL;
3783 }
3784
3785 *endbuf = p;
3786 return patches;
3787 }
3788
3789 static void
3790 register_jump_target_got_slot (MonoDomain *domain, MonoMethod *method, gpointer *got_slot)
3791 {
3792 /*
3793 * Jump addresses cannot be patched by the trampoline code since it
3794 * does not have access to the caller's address. Instead, we collect
3795 * the addresses of the GOT slots pointing to a method, and patch
3796 * them after the method has been compiled.
3797 */
3798 MonoJitDomainInfo *info = domain_jit_info (domain);
3799 GSList *list;
3800
3801 mono_domain_lock (domain);
3802 if (!info->jump_target_got_slot_hash)
3803 info->jump_target_got_slot_hash = g_hash_table_new (NULL, NULL);
3804 list = (GSList *)g_hash_table_lookup (info->jump_target_got_slot_hash, method);
3805 list = g_slist_prepend (list, got_slot);
3806 g_hash_table_insert (info->jump_target_got_slot_hash, method, list);
3807 mono_domain_unlock (domain);
3808 }
3809
3810 /*
3811 * load_method:
3812 *
3813 * Load the method identified by METHOD_INDEX from the AOT image. Return a
3814 * pointer to the native code of the method, or NULL if not found.
3815 * METHOD might not be set if the caller only has the image/token info.
3816 */
3817 static gpointer
3818 load_method (MonoDomain *domain, MonoAotModule *amodule, MonoImage *image, MonoMethod *method, guint32 token, int method_index,
3819 MonoError *error)
3820 {
3821 MonoJitInfo *jinfo = NULL;
3822 guint8 *code = NULL, *info;
3823 gboolean res;
3824
3825 mono_error_init (error);
3826
3827 init_amodule_got (amodule);
3828
3829 if (mono_profiler_get_events () & MONO_PROFILE_ENTER_LEAVE) {
3830 if (mono_aot_only)
3831 /* The caller cannot handle this */
3832 g_assert_not_reached ();
3833 return NULL;
3834 }
3835
3836 if (domain != mono_get_root_domain ())
3837 /* Non shared AOT code can't be used in other appdomains */
3838 return NULL;
3839
3840 if (amodule->out_of_date)
3841 return NULL;
3842
3843 if (amodule->info.llvm_get_method) {
3844 /*
3845 * Obtain the method address by calling a generated function in the LLVM module.
3846 */
3847 gpointer (*get_method) (int) = (gpointer (*)(int))amodule->info.llvm_get_method;
3848 code = (guint8 *)get_method (method_index);
3849 }
3850
3851 if (!code) {
3852 /* JITted method */
3853 if (amodule->methods [method_index] == GINT_TO_POINTER (-1)) {
3854 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
3855 char *full_name;
3856
3857 if (!method) {
3858 method = mono_get_method_checked (image, token, NULL, NULL, error);
3859 if (!method)
3860 return NULL;
3861 }
3862 full_name = mono_method_full_name (method, TRUE);
3863 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT: NOT FOUND: %s.", full_name);
3864 g_free (full_name);
3865 }
3866 return NULL;
3867 }
3868 code = (guint8 *)amodule->methods [method_index];
3869 }
3870
3871 info = &amodule->blob [mono_aot_get_offset (amodule->method_info_offsets, method_index)];
3872
3873 if (!amodule->methods_loaded) {
3874 amodule_lock (amodule);
3875 if (!amodule->methods_loaded) {
3876 guint32 *loaded;
3877
3878 loaded = g_new0 (guint32, amodule->info.nmethods / 32 + 1);
3879 mono_memory_barrier ();
3880 amodule->methods_loaded = loaded;
3881 }
3882 amodule_unlock (amodule);
3883 }
3884
3885 if ((amodule->methods_loaded [method_index / 32] >> (method_index % 32)) & 0x1)
3886 return code;
3887
3888 if (mono_last_aot_method != -1) {
3889 if (mono_jit_stats.methods_aot >= mono_last_aot_method)
3890 return NULL;
3891 else if (mono_jit_stats.methods_aot == mono_last_aot_method - 1) {
3892 if (!method) {
3893 method = mono_get_method_checked (image, token, NULL, NULL, error);
3894 if (!method)
3895 return NULL;
3896 }
3897 if (method) {
3898 char *name = mono_method_full_name (method, TRUE);
3899 g_print ("LAST AOT METHOD: %s.\n", name);
3900 g_free (name);
3901 } else {
3902 g_print ("LAST AOT METHOD: %p %d\n", code, method_index);
3903 }
3904 }
3905 }
3906
3907 if (!(is_llvm_code (amodule, code) && (amodule->info.flags & MONO_AOT_FILE_FLAG_LLVM_ONLY)) ||
3908 (mono_llvm_only && method && method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED)) {
3909 res = init_method (amodule, method_index, method, NULL, NULL, error);
3910 if (!res)
3911 goto cleanup;
3912 }
3913
3914 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
3915 char *full_name;
3916
3917 if (!method) {
3918 method = mono_get_method_checked (image, token, NULL, NULL, error);
3919 if (!method)
3920 return NULL;
3921 }
3922
3923 full_name = mono_method_full_name (method, TRUE);
3924
3925 if (!jinfo)
3926 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
3927
3928 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT: FOUND method %s [%p - %p %p]", full_name, code, code + jinfo->code_size, info);
3929 g_free (full_name);
3930 }
3931
3932 amodule_lock (amodule);
3933
3934 InterlockedIncrement (&mono_jit_stats.methods_aot);
3935
3936 amodule->methods_loaded [method_index / 32] |= 1 << (method_index % 32);
3937
3938 init_plt (amodule);
3939
3940 if (method && method->wrapper_type)
3941 g_hash_table_insert (amodule->method_to_code, method, code);
3942
3943 amodule_unlock (amodule);
3944
3945 if (mono_profiler_get_events () & MONO_PROFILE_JIT_COMPILATION) {
3946 MonoJitInfo *jinfo;
3947
3948 if (!method) {
3949 method = mono_get_method_checked (amodule->assembly->image, token, NULL, NULL, error);
3950 if (!method)
3951 return NULL;
3952 }
3953 mono_profiler_method_jit (method);
3954 jinfo = mono_jit_info_table_find (domain, (char*)code);
3955 g_assert (jinfo);
3956 mono_profiler_method_end_jit (method, jinfo, MONO_PROFILE_OK);
3957 }
3958
3959 return code;
3960
3961 cleanup:
3962 if (jinfo)
3963 g_free (jinfo);
3964
3965 return NULL;
3966 }
3967
3968 static guint32
3969 find_aot_method_in_amodule (MonoAotModule *amodule, MonoMethod *method, guint32 hash_full)
3970 {
3971 MonoError error;
3972 guint32 table_size, entry_size, hash;
3973 guint32 *table, *entry;
3974 guint32 index;
3975 static guint32 n_extra_decodes;
3976
3977 if (!amodule || amodule->out_of_date)
3978 return 0xffffff;
3979
3980 table_size = amodule->extra_method_table [0];
3981 hash = hash_full % table_size;
3982 table = amodule->extra_method_table + 1;
3983 entry_size = 3;
3984
3985 entry = &table [hash * entry_size];
3986
3987 if (entry [0] == 0)
3988 return 0xffffff;
3989
3990 index = 0xffffff;
3991 while (TRUE) {
3992 guint32 key = entry [0];
3993 guint32 value = entry [1];
3994 guint32 next = entry [entry_size - 1];
3995 MonoMethod *m;
3996 guint8 *p, *orig_p;
3997
3998 p = amodule->blob + key;
3999 orig_p = p;
4000
4001 amodule_lock (amodule);
4002 if (!amodule->method_ref_to_method)
4003 amodule->method_ref_to_method = g_hash_table_new (NULL, NULL);
4004 m = (MonoMethod *)g_hash_table_lookup (amodule->method_ref_to_method, p);
4005 amodule_unlock (amodule);
4006 if (!m) {
4007 m = decode_resolve_method_ref_with_target (amodule, method, p, &p, &error);
4008 mono_error_cleanup (&error); /* FIXME don't swallow the error */
4009 /*
4010 * Can't catche runtime invoke wrappers since it would break
4011 * the check in decode_method_ref_with_target ().
4012 */
4013 if (m && m->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE) {
4014 amodule_lock (amodule);
4015 g_hash_table_insert (amodule->method_ref_to_method, orig_p, m);
4016 amodule_unlock (amodule);
4017 }
4018 }
4019 if (m == method) {
4020 index = value;
4021 break;
4022 }
4023
4024 /* Methods decoded needlessly */
4025 if (m) {
4026 //printf ("%d %s %s %p\n", n_extra_decodes, mono_method_full_name (method, TRUE), mono_method_full_name (m, TRUE), orig_p);
4027 n_extra_decodes ++;
4028 }
4029
4030 if (next != 0)
4031 entry = &table [next * entry_size];
4032 else
4033 break;
4034 }
4035
4036 return index;
4037 }
4038
4039 static void
4040 add_module_cb (gpointer key, gpointer value, gpointer user_data)
4041 {
4042 g_ptr_array_add ((GPtrArray*)user_data, value);
4043 }
4044
4045 /*
4046 * find_aot_method:
4047 *
4048 * Try finding METHOD in the extra_method table in all AOT images.
4049 * Return its method index, or 0xffffff if not found. Set OUT_AMODULE to the AOT
4050 * module where the method was found.
4051 */
4052 static guint32
4053 find_aot_method (MonoMethod *method, MonoAotModule **out_amodule)
4054 {
4055 guint32 index;
4056 GPtrArray *modules;
4057 int i;
4058 guint32 hash = mono_aot_method_hash (method);
4059
4060 /* Try the method's module first */
4061 *out_amodule = (MonoAotModule *)method->klass->image->aot_module;
4062 index = find_aot_method_in_amodule ((MonoAotModule *)method->klass->image->aot_module, method, hash);
4063 if (index != 0xffffff)
4064 return index;
4065
4066 /*
4067 * Try all other modules.
4068 * This is needed because generic instances klass->image points to the image
4069 * containing the generic definition, but the native code is generated to the
4070 * AOT image which contains the reference.
4071 */
4072
4073 /* Make a copy to avoid doing the search inside the aot lock */
4074 modules = g_ptr_array_new ();
4075 mono_aot_lock ();
4076 g_hash_table_foreach (aot_modules, add_module_cb, modules);
4077 mono_aot_unlock ();
4078
4079 index = 0xffffff;
4080 for (i = 0; i < modules->len; ++i) {
4081 MonoAotModule *amodule = (MonoAotModule *)g_ptr_array_index (modules, i);
4082
4083 if (amodule != method->klass->image->aot_module)
4084 index = find_aot_method_in_amodule (amodule, method, hash);
4085 if (index != 0xffffff) {
4086 *out_amodule = amodule;
4087 break;
4088 }
4089 }
4090
4091 g_ptr_array_free (modules, TRUE);
4092
4093 return index;
4094 }
4095
4096 guint32
4097 mono_aot_find_method_index (MonoMethod *method)
4098 {
4099 MonoAotModule *out_amodule;
4100 return find_aot_method (method, &out_amodule);
4101 }
4102
4103 static gboolean
4104 init_method (MonoAotModule *amodule, guint32 method_index, MonoMethod *method, MonoClass *init_class, MonoGenericContext *context, MonoError *error)
4105 {
4106 MonoDomain *domain = mono_domain_get ();
4107 MonoMemPool *mp;
4108 MonoClass *klass_to_run_ctor = NULL;
4109 gboolean from_plt = method == NULL;
4110 int pindex, n_patches;
4111 guint8 *p;
4112 MonoJitInfo *jinfo = NULL;
4113 guint8 *code, *info;
4114
4115 mono_error_init (error);
4116
4117 code = (guint8 *)amodule->methods [method_index];
4118 info = &amodule->blob [mono_aot_get_offset (amodule->method_info_offsets, method_index)];
4119
4120 p = info;
4121
4122 //does the method's class has a cctor?
4123 if (decode_value (p, &p) == 1)
4124 klass_to_run_ctor = decode_klass_ref (amodule, p, &p, error);
4125 if (!is_ok (error))
4126 return FALSE;
4127
4128 //FIXME old code would use the class from @method if not null and ignore the one encoded. I don't know if we need to honor that -- @kumpera
4129 if (method)
4130 klass_to_run_ctor = method->klass;
4131
4132 n_patches = decode_value (p, &p);
4133
4134 if (n_patches) {
4135 MonoJumpInfo *patches;
4136 guint32 *got_slots;
4137 gboolean llvm;
4138 gpointer *got;
4139
4140 mp = mono_mempool_new ();
4141
4142 if ((gpointer)code >= amodule->info.jit_code_start && (gpointer)code <= amodule->info.jit_code_end) {
4143 llvm = FALSE;
4144 got = amodule->got;
4145 } else {
4146 llvm = TRUE;
4147 got = amodule->llvm_got;
4148 g_assert (got);
4149 }
4150
4151 patches = load_patch_info (amodule, mp, n_patches, llvm, &got_slots, p, &p);
4152 if (patches == NULL) {
4153 mono_mempool_destroy (mp);
4154 goto cleanup;
4155 }
4156
4157 for (pindex = 0; pindex < n_patches; ++pindex) {
4158 MonoJumpInfo *ji = &patches [pindex];
4159 gpointer addr;
4160
4161 /*
4162 * For SFLDA, we need to call resolve_patch_target () since the GOT slot could have
4163 * been initialized by load_method () for a static cctor before the cctor has
4164 * finished executing (#23242).
4165 */
4166 if (!got [got_slots [pindex]] || ji->type == MONO_PATCH_INFO_SFLDA) {
4167 /* In llvm-only made, we might encounter shared methods */
4168 if (mono_llvm_only && ji->type == MONO_PATCH_INFO_METHOD && mono_method_check_context_used (ji->data.method)) {
4169 g_assert (context);
4170 ji->data.method = mono_class_inflate_generic_method_checked (ji->data.method, context, error);
4171 if (!mono_error_ok (error)) {
4172 g_free (got_slots);
4173 mono_mempool_destroy (mp);
4174 return FALSE;
4175 }
4176 }
4177 /* This cannot be resolved in mono_resolve_patch_target () */
4178 if (ji->type == MONO_PATCH_INFO_AOT_JIT_INFO) {
4179 // FIXME: Lookup using the index
4180 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
4181 ji->type = MONO_PATCH_INFO_ABS;
4182 ji->data.target = jinfo;
4183 }
4184 addr = mono_resolve_patch_target (method, domain, code, ji, TRUE, error);
4185 if (!mono_error_ok (error)) {
4186 g_free (got_slots);
4187 mono_mempool_destroy (mp);
4188 return FALSE;
4189 }
4190 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
4191 addr = mono_create_ftnptr (domain, addr);
4192 mono_memory_barrier ();
4193 got [got_slots [pindex]] = addr;
4194 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
4195 register_jump_target_got_slot (domain, ji->data.method, &(got [got_slots [pindex]]));
4196 }
4197 ji->type = MONO_PATCH_INFO_NONE;
4198 }
4199
4200 g_free (got_slots);
4201
4202 mono_mempool_destroy (mp);
4203 }
4204
4205 if (mini_get_debug_options ()->load_aot_jit_info_eagerly)
4206 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
4207
4208 gboolean inited_ok = TRUE;
4209 if (init_class)
4210 inited_ok = mono_runtime_class_init_full (mono_class_vtable (domain, init_class), error);
4211 else if (from_plt && klass_to_run_ctor && !mono_class_is_gtd (klass_to_run_ctor))
4212 inited_ok = mono_runtime_class_init_full (mono_class_vtable (domain, klass_to_run_ctor), error);
4213 if (!inited_ok)
4214 return FALSE;
4215
4216 return TRUE;
4217
4218 cleanup:
4219 if (jinfo)
4220 g_free (jinfo);
4221
4222 return FALSE;
4223 }
4224
4225 static void
4226 init_llvmonly_method (MonoAotModule *amodule, guint32 method_index, MonoMethod *method, MonoClass *init_class, MonoGenericContext *context)
4227 {
4228 gboolean res;
4229 MonoError error;
4230
4231 res = init_method (amodule, method_index, method, init_class, context, &error);
4232 if (!is_ok (&error)) {
4233 MonoException *ex = mono_error_convert_to_exception (&error);
4234 /* Its okay to raise in llvmonly mode */
4235 if (ex)
4236 mono_llvm_throw_exception ((MonoObject*)ex);
4237 }
4238 }
4239
4240 void
4241 mono_aot_init_llvm_method (gpointer aot_module, guint32 method_index)
4242 {
4243 MonoAotModule *amodule = (MonoAotModule *)aot_module;
4244
4245 init_llvmonly_method (amodule, method_index, NULL, NULL, NULL);
4246 }
4247
4248 void
4249 mono_aot_init_gshared_method_this (gpointer aot_module, guint32 method_index, MonoObject *this_obj)
4250 {
4251 MonoAotModule *amodule = (MonoAotModule *)aot_module;
4252 MonoClass *klass;
4253 MonoGenericContext *context;
4254 MonoMethod *method;
4255
4256 // FIXME:
4257 g_assert (this_obj);
4258 klass = this_obj->vtable->klass;
4259
4260 amodule_lock (amodule);
4261 method = (MonoMethod *)g_hash_table_lookup (amodule->extra_methods, GUINT_TO_POINTER (method_index));
4262 amodule_unlock (amodule);
4263
4264 g_assert (method);
4265 context = mono_method_get_context (method);
4266 g_assert (context);
4267
4268 init_llvmonly_method (amodule, method_index, NULL, klass, context);
4269 }
4270
4271 void
4272 mono_aot_init_gshared_method_mrgctx (gpointer aot_module, guint32 method_index, MonoMethodRuntimeGenericContext *rgctx)
4273 {
4274 MonoAotModule *amodule = (MonoAotModule *)aot_module;
4275 MonoGenericContext context = { NULL, NULL };
4276 MonoClass *klass = rgctx->class_vtable->klass;
4277
4278 if (mono_class_is_ginst (klass))
4279 context.class_inst = mono_class_get_generic_class (klass)->context.class_inst;
4280 else if (mono_class_is_gtd (klass))
4281 context.class_inst = mono_class_get_generic_container (klass)->context.class_inst;
4282 context.method_inst = rgctx->method_inst;
4283
4284 init_llvmonly_method (amodule, method_index, NULL, rgctx->class_vtable->klass, &context);
4285 }
4286
4287 void
4288 mono_aot_init_gshared_method_vtable (gpointer aot_module, guint32 method_index, MonoVTable *vtable)
4289 {
4290 MonoAotModule *amodule = (MonoAotModule *)aot_module;
4291 MonoClass *klass;
4292 MonoGenericContext *context;
4293 MonoMethod *method;
4294
4295 klass = vtable->klass;
4296
4297 amodule_lock (amodule);
4298 method = (MonoMethod *)g_hash_table_lookup (amodule->extra_methods, GUINT_TO_POINTER (method_index));
4299 amodule_unlock (amodule);
4300
4301 g_assert (method);
4302 context = mono_method_get_context (method);
4303 g_assert (context);
4304
4305 init_llvmonly_method (amodule, method_index, NULL, klass, context);
4306 }
4307
4308 /*
4309 * mono_aot_get_method_checked:
4310 *
4311 * Return a pointer to the AOTed native code for METHOD if it can be found,
4312 * NULL otherwise.
4313 * On platforms with function pointers, this doesn't return a function pointer.
4314 */
4315 gpointer
4316 mono_aot_get_method_checked (MonoDomain *domain, MonoMethod *method, MonoError *error)
4317 {
4318 MonoClass *klass = method->klass;
4319 MonoMethod *orig_method = method;
4320 guint32 method_index;
4321 MonoAotModule *amodule = (MonoAotModule *)klass->image->aot_module;
4322 guint8 *code;
4323 gboolean cache_result = FALSE;
4324 MonoError inner_error;
4325
4326 mono_error_init (error);
4327
4328 if (domain != mono_get_root_domain ())
4329 /* Non shared AOT code can't be used in other appdomains */
4330 return NULL;
4331
4332 if (enable_aot_cache && !amodule && domain->entry_assembly && klass->image == mono_defaults.corlib) {
4333 /* This cannot be AOTed during startup, so do it now */
4334 if (!mscorlib_aot_loaded) {
4335 mscorlib_aot_loaded = TRUE;
4336 load_aot_module (klass->image->assembly, NULL);
4337 amodule = (MonoAotModule *)klass->image->aot_module;
4338 }
4339 }
4340
4341 if (!amodule)
4342 return NULL;
4343
4344 if (amodule->out_of_date)
4345 return NULL;
4346
4347 if ((method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
4348 (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
4349 (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
4350 (method->flags & METHOD_ATTRIBUTE_ABSTRACT))
4351 return NULL;
4352
4353 /*
4354 * Use the original method instead of its invoke-with-check wrapper.
4355 * This is not a problem when using full-aot, since it doesn't support
4356 * remoting.
4357 */
4358 if (mono_aot_only && method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)
4359 return mono_aot_get_method_checked (domain, mono_marshal_method_from_wrapper (method), error);
4360
4361 g_assert (klass->inited);
4362
4363 /* Find method index */
4364 method_index = 0xffffff;
4365 if (method->is_inflated && !method->wrapper_type && mono_method_is_generic_sharable_full (method, TRUE, FALSE, FALSE)) {
4366 MonoMethod *orig_method = method;
4367 /*
4368 * For generic methods, we store the fully shared instance in place of the
4369 * original method.
4370 */
4371 method = mono_method_get_declaring_generic_method (method);
4372 method_index = mono_metadata_token_index (method->token) - 1;
4373
4374 if (mono_llvm_only) {
4375 /* Needed by mono_aot_init_gshared_method_this () */
4376 /* orig_method is a random instance but it is enough to make init_method () work */
4377 amodule_lock (amodule);
4378 g_hash_table_insert (amodule->extra_methods, GUINT_TO_POINTER (method_index), orig_method);
4379 amodule_unlock (amodule);
4380 }
4381 } else if (method->is_inflated || !method->token) {
4382 /* This hash table is used to avoid the slower search in the extra_method_table in the AOT image */
4383 amodule_lock (amodule);
4384 code = (guint8 *)g_hash_table_lookup (amodule->method_to_code, method);
4385 amodule_unlock (amodule);
4386 if (code)
4387 return code;
4388
4389 cache_result = TRUE;
4390 method_index = find_aot_method (method, &amodule);
4391 /*
4392 * Special case the ICollection<T> wrappers for arrays, as they cannot
4393 * be statically enumerated, and each wrapper ends up calling the same
4394 * method in Array.
4395 */
4396 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED && method->klass->rank && strstr (method->name, "System.Collections.Generic")) {
4397 MonoMethod *m = mono_aot_get_array_helper_from_wrapper (method);
4398
4399 code = (guint8 *)mono_aot_get_method_checked (domain, m, &inner_error);
4400 mono_error_cleanup (&inner_error);
4401 if (code)
4402 return code;
4403 }
4404
4405 /*
4406 * Special case Array.GetGenericValueImpl which is a generic icall.
4407 * Generic sharing currently can't handle it, but the icall returns data using
4408 * an out parameter, so the managed-to-native wrappers can share the same code.
4409 */
4410 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass == mono_defaults.array_class && !strcmp (method->name, "GetGenericValueImpl")) {
4411 MonoMethod *m;
4412 MonoGenericContext ctx;
4413 MonoType *args [16];
4414
4415 if (mono_method_signature (method)->params [1]->type == MONO_TYPE_OBJECT)
4416 /* Avoid recursion */
4417 return NULL;
4418
4419 m = mono_class_get_method_from_name (mono_defaults.array_class, "GetGenericValueImpl", 2);
4420 g_assert (m);
4421
4422 memset (&ctx, 0, sizeof (ctx));
4423 args [0] = &mono_defaults.object_class->byval_arg;
4424 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
4425
4426 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method_checked (m, &ctx, error), TRUE, TRUE);
4427 if (!m)
4428 g_error ("AOT runtime could not load method due to %s", mono_error_get_message (error)); /* FIXME don't swallow the error */
4429
4430 /*
4431 * Get the code for the <object> instantiation which should be emitted into
4432 * the mscorlib aot image by the AOT compiler.
4433 */
4434 code = (guint8 *)mono_aot_get_method_checked (domain, m, &inner_error);
4435 mono_error_cleanup (&inner_error);
4436 if (code)
4437 return code;
4438 }
4439
4440 /* Same for CompareExchange<T> and Exchange<T> */
4441 /* Same for Volatile.Read<T>/Write<T> */
4442 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass->image == mono_defaults.corlib &&
4443 ((!strcmp (method->klass->name_space, "System.Threading") && !strcmp (method->klass->name, "Interlocked") && (!strcmp (method->name, "CompareExchange") || !strcmp (method->name, "Exchange")) && MONO_TYPE_IS_REFERENCE (mini_type_get_underlying_type (mono_method_signature (method)->params [1]))) ||
4444 (!strcmp (method->klass->name_space, "System.Threading") && !strcmp (method->klass->name, "Volatile") && (!strcmp (method->name, "Read") && MONO_TYPE_IS_REFERENCE (mini_type_get_underlying_type (mono_method_signature (method)->ret)))) ||
4445 (!strcmp (method->klass->name_space, "System.Threading") && !strcmp (method->klass->name, "Volatile") && (!strcmp (method->name, "Write") && MONO_TYPE_IS_REFERENCE (mini_type_get_underlying_type (mono_method_signature (method)->params [1])))))) {
4446 MonoMethod *m;
4447 MonoGenericContext ctx;
4448 MonoType *args [16];
4449 gpointer iter = NULL;
4450
4451 while ((m = mono_class_get_methods (method->klass, &iter))) {
4452 if (mono_method_signature (m)->generic_param_count && !strcmp (m->name, method->name))
4453 break;
4454 }
4455 g_assert (m);
4456
4457 memset (&ctx, 0, sizeof (ctx));
4458 args [0] = &mono_defaults.object_class->byval_arg;
4459 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
4460
4461 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method_checked (m, &ctx, error), TRUE, TRUE);
4462 if (!m)
4463 g_error ("AOT runtime could not load method due to %s", mono_error_get_message (error)); /* FIXME don't swallow the error */
4464
4465 /* Avoid recursion */
4466 if (method == m)
4467 return NULL;
4468
4469 /*
4470 * Get the code for the <object> instantiation which should be emitted into
4471 * the mscorlib aot image by the AOT compiler.
4472 */
4473 code = (guint8 *)mono_aot_get_method_checked (domain, m, &inner_error);
4474 mono_error_cleanup (&inner_error);
4475 if (code)
4476 return code;
4477 }
4478
4479 /* For ARRAY_ACCESSOR wrappers with reference types, use the <object> instantiation saved in corlib */
4480 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_UNKNOWN) {
4481 WrapperInfo *info = mono_marshal_get_wrapper_info (method);
4482
4483 if (info->subtype == WRAPPER_SUBTYPE_ARRAY_ACCESSOR) {
4484 MonoMethod *array_method = info->d.array_accessor.method;
4485 if (MONO_TYPE_IS_REFERENCE (&array_method->klass->element_class->byval_arg)) {
4486 int rank;
4487
4488 if (!strcmp (array_method->name, "Set"))
4489 rank = mono_method_signature (array_method)->param_count - 1;
4490 else if (!strcmp (array_method->name, "Get") || !strcmp (array_method->name, "Address"))
4491 rank = mono_method_signature (array_method)->param_count;
4492 else
4493 g_assert_not_reached ();
4494 MonoClass *obj_array_class = mono_array_class_get (mono_defaults.object_class, rank);
4495 MonoMethod *m = mono_class_get_method_from_name (obj_array_class, array_method->name, mono_method_signature (array_method)->param_count);
4496 g_assert (m);
4497
4498 m = mono_marshal_get_array_accessor_wrapper (m);
4499 if (m != method) {
4500 code = (guint8 *)mono_aot_get_method_checked (domain, m, &inner_error);
4501 mono_error_cleanup (&inner_error);
4502 if (code)
4503 return code;
4504 }
4505 }
4506 }
4507 }
4508
4509 if (method_index == 0xffffff && method->is_inflated && mono_method_is_generic_sharable_full (method, FALSE, TRUE, FALSE)) {
4510 /* Partial sharing */
4511 MonoMethod *shared;
4512
4513 shared = mini_get_shared_method (method);
4514 method_index = find_aot_method (shared, &amodule);
4515 if (method_index != 0xffffff)
4516 method = shared;
4517 }
4518
4519 if (method_index == 0xffffff && method->is_inflated && mono_method_is_generic_sharable_full (method, FALSE, FALSE, TRUE)) {
4520 MonoMethod *shared;
4521 /* gsharedvt */
4522 /* Use the all-vt shared method since this is what was AOTed */
4523 shared = mini_get_shared_method_full (method, TRUE, TRUE);
4524 method_index = find_aot_method (shared, &amodule);
4525 if (method_index != 0xffffff)
4526 method = mini_get_shared_method_full (method, TRUE, FALSE);
4527 }
4528
4529 if (method_index == 0xffffff) {
4530 if (mono_aot_only && mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
4531 char *full_name;
4532
4533 full_name = mono_method_full_name (method, TRUE);
4534 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.", full_name);
4535 g_free (full_name);
4536 }
4537 return NULL;
4538 }
4539
4540 if (method_index == 0xffffff)
4541 return NULL;
4542
4543 /* Needed by find_jit_info */
4544 amodule_lock (amodule);
4545 g_hash_table_insert (amodule->extra_methods, GUINT_TO_POINTER (method_index), method);
4546 amodule_unlock (amodule);
4547 } else {
4548 /* Common case */
4549 method_index = mono_metadata_token_index (method->token) - 1;
4550 }
4551
4552 code = (guint8 *)load_method (domain, amodule, klass->image, method, method->token, method_index, error);
4553 if (!is_ok (error))
4554 return NULL;
4555 if (code && cache_result) {
4556 amodule_lock (amodule);
4557 g_hash_table_insert (amodule->method_to_code, orig_method, code);
4558 amodule_unlock (amodule);
4559 }
4560 return code;
4561 }
4562
4563 /*
4564 * mono_aot_get_method:
4565 *
4566 * Return a pointer to the AOTed native code for METHOD if it can be found,
4567 * NULL otherwise.
4568 * On platforms with function pointers, this doesn't return a function pointer.
4569 */
4570 gpointer
4571 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
4572 {
4573 MonoError error;
4574
4575 gpointer res = mono_aot_get_method_checked (domain, method, &error);
4576 /* This is external only, so its ok to raise here */
4577 mono_error_raise_exception (&error); /* OK to throw, external only without a good alternative */
4578 return res;
4579 }
4580
4581 /**
4582 * Same as mono_aot_get_method, but we try to avoid loading any metadata from the
4583 * method.
4584 */
4585 gpointer
4586 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token, MonoError *error)
4587 {
4588 MonoAotModule *aot_module = (MonoAotModule *)image->aot_module;
4589 int method_index;
4590 gpointer res;
4591
4592 mono_error_init (error);
4593
4594 if (!aot_module)
4595 return NULL;
4596
4597 method_index = mono_metadata_token_index (token) - 1;
4598
4599 res = load_method (domain, aot_module, image, NULL, token, method_index, error);
4600 return res;
4601 }
4602
4603 typedef struct {
4604 guint8 *addr;
4605 gboolean res;
4606 } IsGotEntryUserData;
4607
4608 static void
4609 check_is_got_entry (gpointer key, gpointer value, gpointer user_data)
4610 {
4611 IsGotEntryUserData *data = (IsGotEntryUserData*)user_data;
4612 MonoAotModule *aot_module = (MonoAotModule*)value;
4613
4614 if (aot_module->got && (data->addr >= (guint8*)(aot_module->got)) && (data->addr < (guint8*)(aot_module->got + aot_module->info.got_size)))
4615 data->res = TRUE;
4616 }
4617
4618 gboolean
4619 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
4620 {
4621 IsGotEntryUserData user_data;
4622
4623 if (!aot_modules)
4624 return FALSE;
4625
4626 user_data.addr = addr;
4627 user_data.res = FALSE;
4628 mono_aot_lock ();
4629 g_hash_table_foreach (aot_modules, check_is_got_entry, &user_data);
4630 mono_aot_unlock ();
4631
4632 return user_data.res;
4633 }
4634
4635 typedef struct {
4636 guint8 *addr;
4637 MonoAotModule *module;
4638 } FindAotModuleUserData;
4639
4640 static void
4641 find_aot_module_cb (gpointer key, gpointer value, gpointer user_data)
4642 {
4643 FindAotModuleUserData *data = (FindAotModuleUserData*)user_data;
4644 MonoAotModule *aot_module = (MonoAotModule*)value;
4645
4646 if (amodule_contains_code_addr (aot_module, data->addr))
4647 data->module = aot_module;
4648 }
4649
4650 static inline MonoAotModule*
4651 find_aot_module (guint8 *code)
4652 {
4653 FindAotModuleUserData user_data;
4654
4655 if (!aot_modules)
4656 return NULL;
4657
4658 /* Reading these need no locking */
4659 if (((gsize)code < aot_code_low_addr) || ((gsize)code > aot_code_high_addr))
4660 return NULL;
4661
4662 user_data.addr = code;
4663 user_data.module = NULL;
4664
4665 mono_aot_lock ();
4666 g_hash_table_foreach (aot_modules, find_aot_module_cb, &user_data);
4667 mono_aot_unlock ();
4668
4669 return user_data.module;
4670 }
4671
4672 void
4673 mono_aot_patch_plt_entry (guint8 *code, guint8 *plt_entry, gpointer *got, mgreg_t *regs, guint8 *addr)
4674 {
4675 MonoAotModule *amodule;
4676
4677 /*
4678 * Since AOT code is only used in the root domain,
4679 * mono_domain_get () != mono_get_root_domain () means the calling method
4680 * is AppDomain:InvokeInDomain, so this is the same check as in
4681 * mono_method_same_domain () but without loading the metadata for the method.
4682 */
4683 if (mono_domain_get () == mono_get_root_domain ()) {
4684 if (!got) {
4685 amodule = find_aot_module (code);
4686 if (amodule)
4687 got = amodule->got;
4688 }
4689 mono_arch_patch_plt_entry (plt_entry, got, regs, addr);
4690 }
4691 }
4692
4693 /*
4694 * mono_aot_plt_resolve:
4695 *
4696 * This function is called by the entries in the PLT to resolve the actual method that
4697 * needs to be called. It returns a trampoline to the method and patches the PLT entry.
4698 * Returns NULL if the something cannot be loaded.
4699 */
4700 gpointer
4701 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code, MonoError *error)
4702 {
4703 #ifdef MONO_ARCH_AOT_SUPPORTED
4704 guint8 *p, *target, *plt_entry;
4705 MonoJumpInfo ji;
4706 MonoAotModule *module = (MonoAotModule*)aot_module;
4707 gboolean res, no_ftnptr = FALSE;
4708 MonoMemPool *mp;
4709 gboolean using_gsharedvt = FALSE;
4710
4711 mono_error_init (error);
4712
4713 //printf ("DYN: %p %d\n", aot_module, plt_info_offset);
4714
4715 p = &module->blob [plt_info_offset];
4716
4717 ji.type = (MonoJumpInfoType)decode_value (p, &p);
4718
4719 mp = mono_mempool_new ();
4720 res = decode_patch (module, mp, &ji, p, &p);
4721
4722 if (!res) {
4723 mono_mempool_destroy (mp);
4724 return NULL;
4725 }
4726
4727 #ifdef MONO_ARCH_GSHAREDVT_SUPPORTED
4728 using_gsharedvt = TRUE;
4729 #endif
4730
4731 /*
4732 * Avoid calling resolve_patch_target in the full-aot case if possible, since
4733 * it would create a trampoline, and we don't need that.
4734 * We could do this only if the method does not need the special handling
4735 * in mono_magic_trampoline ().
4736 */
4737 if (mono_aot_only && ji.type == MONO_PATCH_INFO_METHOD && !ji.data.method->is_generic && !mono_method_check_context_used (ji.data.method) && !(ji.data.method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) &&
4738 !mono_method_needs_static_rgctx_invoke (ji.data.method, FALSE) && !using_gsharedvt) {
4739 target = (guint8 *)mono_jit_compile_method (ji.data.method, error);
4740 if (!mono_error_ok (error)) {
4741 mono_mempool_destroy (mp);
4742 return NULL;
4743 }
4744 no_ftnptr = TRUE;
4745 } else {
4746 target = (guint8 *)mono_resolve_patch_target (NULL, mono_domain_get (), NULL, &ji, TRUE, error);
4747 if (!mono_error_ok (error)) {
4748 mono_mempool_destroy (mp);
4749 return NULL;
4750 }
4751 }
4752
4753 /*
4754 * The trampoline expects us to return a function descriptor on platforms which use
4755 * it, but resolve_patch_target returns a direct function pointer for some type of
4756 * patches, so have to translate between the two.
4757 * FIXME: Clean this up, but how ?
4758 */
4759 if (ji.type == MONO_PATCH_INFO_ABS || ji.type == MONO_PATCH_INFO_INTERNAL_METHOD || ji.type == MONO_PATCH_INFO_ICALL_ADDR || ji.type == MONO_PATCH_INFO_JIT_ICALL_ADDR || ji.type == MONO_PATCH_INFO_RGCTX_FETCH) {
4760 /* These should already have a function descriptor */
4761 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
4762 /* Our function descriptors have a 0 environment, gcc created ones don't */
4763 if (ji.type != MONO_PATCH_INFO_INTERNAL_METHOD && ji.type != MONO_PATCH_INFO_JIT_ICALL_ADDR && ji.type != MONO_PATCH_INFO_ICALL_ADDR)
4764 g_assert (((gpointer*)target) [2] == 0);
4765 #endif
4766 /* Empty */
4767 } else if (!no_ftnptr) {
4768 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
4769 g_assert (((gpointer*)target) [2] != 0);
4770 #endif
4771 target = (guint8 *)mono_create_ftnptr (mono_domain_get (), target);
4772 }
4773
4774 mono_mempool_destroy (mp);
4775
4776 /* Patch the PLT entry with target which might be the actual method not a trampoline */
4777 plt_entry = mono_aot_get_plt_entry (code);
4778 g_assert (plt_entry);
4779 mono_aot_patch_plt_entry (code, plt_entry, module->got, NULL, target);
4780
4781 return target;
4782 #else
4783 g_assert_not_reached ();
4784 return NULL;
4785 #endif
4786 }
4787
4788 /**
4789 * init_plt:
4790 *
4791 * Initialize the PLT table of the AOT module. Called lazily when the first AOT
4792 * method in the module is loaded to avoid committing memory by writing to it.
4793 * LOCKING: Assumes the AMODULE lock is held.
4794 */
4795 static void
4796 init_plt (MonoAotModule *amodule)
4797 {
4798 int i;
4799 gpointer tramp;
4800
4801 if (amodule->plt_inited)
4802 return;
4803
4804 if (amodule->info.plt_size <= 1) {
4805 amodule->plt_inited = TRUE;
4806 return;
4807 }
4808
4809 tramp = mono_create_specific_trampoline (amodule, MONO_TRAMPOLINE_AOT_PLT, mono_get_root_domain (), NULL);
4810
4811 /*
4812 * Initialize the PLT entries in the GOT to point to the default targets.
4813 */
4814
4815 tramp = mono_create_ftnptr (mono_domain_get (), tramp);
4816 for (i = 1; i < amodule->info.plt_size; ++i)
4817 /* All the default entries point to the AOT trampoline */
4818 ((gpointer*)amodule->got)[amodule->info.plt_got_offset_base + i] = tramp;
4819
4820 amodule->plt_inited = TRUE;
4821 }
4822
4823 /*
4824 * mono_aot_get_plt_entry:
4825 *
4826 * Return the address of the PLT entry called by the code at CODE if exists.
4827 */
4828 guint8*
4829 mono_aot_get_plt_entry (guint8 *code)
4830 {
4831 MonoAotModule *amodule = find_aot_module (code);
4832 guint8 *target = NULL;
4833
4834 if (!amodule)
4835 return NULL;
4836
4837 #ifdef TARGET_ARM
4838 if (is_thumb_code (amodule, code - 4))
4839 return mono_arm_get_thumb_plt_entry (code);
4840 #endif
4841
4842 #ifdef MONO_ARCH_AOT_SUPPORTED
4843 target = mono_arch_get_call_target (code);
4844 #else
4845 g_assert_not_reached ();
4846 #endif
4847
4848 #ifdef MONOTOUCH
4849 while (target != NULL) {
4850 if ((target >= (guint8*)(amodule->plt)) && (target < (guint8*)(amodule->plt_end)))
4851 return target;
4852
4853 // Add 4 since mono_arch_get_call_target assumes we're passing
4854 // the instruction after the actual branch instruction.
4855 target = mono_arch_get_call_target (target + 4);
4856 }
4857
4858 return NULL;
4859 #else
4860 if ((target >= (guint8*)(amodule->plt)) && (target < (guint8*)(amodule->plt_end)))
4861 return target;
4862 else
4863 return NULL;
4864 #endif
4865 }
4866
4867 /*
4868 * mono_aot_get_plt_info_offset:
4869 *
4870 * Return the PLT info offset belonging to the plt entry called by CODE.
4871 */
4872 guint32
4873 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
4874 {
4875 guint8 *plt_entry = mono_aot_get_plt_entry (code);
4876
4877 g_assert (plt_entry);
4878
4879 /* The offset is embedded inside the code after the plt entry */
4880 #ifdef MONO_ARCH_AOT_SUPPORTED
4881 return mono_arch_get_plt_info_offset (plt_entry, regs, code);
4882 #else
4883 g_assert_not_reached ();
4884 return 0;
4885 #endif
4886 }
4887
4888 static gpointer
4889 mono_create_ftnptr_malloc (guint8 *code)
4890 {
4891 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
4892 MonoPPCFunctionDescriptor *ftnptr = g_malloc0 (sizeof (MonoPPCFunctionDescriptor));
4893
4894 ftnptr->code = code;
4895 ftnptr->toc = NULL;
4896 ftnptr->env = NULL;
4897
4898 return ftnptr;
4899 #else
4900 return code;
4901 #endif
4902 }
4903
4904 /*
4905 * mono_aot_register_jit_icall:
4906 *
4907 * Register a JIT icall which is called by trampolines in full-aot mode. This should
4908 * be called from mono_arch_init () during startup.
4909 */
4910 void
4911 mono_aot_register_jit_icall (const char *name, gpointer addr)
4912 {
4913 /* No need for locking */
4914 if (!aot_jit_icall_hash)
4915 aot_jit_icall_hash = g_hash_table_new (g_str_hash, g_str_equal);
4916 g_hash_table_insert (aot_jit_icall_hash, (char*)name, addr);
4917 }
4918
4919 /*
4920 * load_function_full:
4921 *
4922 * Load the function named NAME from the aot image.
4923 */
4924 static gpointer
4925 load_function_full (MonoAotModule *amodule, const char *name, MonoTrampInfo **out_tinfo)
4926 {
4927 char *symbol;
4928 guint8 *p;
4929 int n_patches, pindex;
4930 MonoMemPool *mp;
4931 gpointer code;
4932 guint32 info_offset;
4933
4934 /* Load the code */
4935
4936 symbol = g_strdup_printf ("%s", name);
4937 find_amodule_symbol (amodule, symbol, (gpointer *)&code);
4938 g_free (symbol);
4939 if (!code)
4940 g_error ("Symbol '%s' not found in AOT file '%s'.\n", name, amodule->aot_name);
4941
4942 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT: FOUND function '%s' in AOT file '%s'.", name, amodule->aot_name);
4943
4944 /* Load info */
4945
4946 symbol = g_strdup_printf ("%s_p", name);
4947 find_amodule_symbol (amodule, symbol, (gpointer *)&p);
4948 g_free (symbol);
4949 if (!p)
4950 /* Nothing to patch */
4951 return code;
4952
4953 info_offset = *(guint32*)p;
4954 if (out_tinfo) {
4955 MonoTrampInfo *tinfo;
4956 guint32 code_size, uw_info_len, uw_offset;
4957 guint8 *uw_info;
4958 /* Construct a MonoTrampInfo from the data in the AOT image */
4959
4960 p += sizeof (guint32);
4961 code_size = *(guint32*)p;
4962 p += sizeof (guint32);
4963 uw_offset = *(guint32*)p;
4964 uw_info = amodule->unwind_info + uw_offset;
4965 uw_info_len = decode_value (uw_info, &uw_info);
4966
4967 tinfo = g_new0 (MonoTrampInfo, 1);
4968 tinfo->code = (guint8 *)code;
4969 tinfo->code_size = code_size;
4970 tinfo->uw_info_len = uw_info_len;
4971 if (uw_info_len)
4972 tinfo->uw_info = uw_info;
4973
4974 *out_tinfo = tinfo;
4975 }
4976
4977 p = amodule->blob + info_offset;
4978
4979 /* Similar to mono_aot_load_method () */
4980
4981 n_patches = decode_value (p, &p);
4982
4983 if (n_patches) {
4984 MonoJumpInfo *patches;
4985 guint32 *got_slots;
4986
4987 mp = mono_mempool_new ();
4988
4989 patches = load_patch_info (amodule, mp, n_patches, FALSE, &got_slots, p, &p);
4990 g_assert (patches);
4991
4992 for (pindex = 0; pindex < n_patches; ++pindex) {
4993 MonoJumpInfo *ji = &patches [pindex];
4994 MonoError error;
4995 gpointer target;
4996
4997 if (amodule->got [got_slots [pindex]])
4998 continue;
4999
5000 /*
5001 * When this code is executed, the runtime may not be initalized yet, so
5002 * resolve the patch info by hand.
5003 */
5004 if (ji->type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
5005 if (!strcmp (ji->data.name, "mono_get_lmf_addr")) {
5006 target = mono_get_lmf_addr;
5007 } else if (!strcmp (ji->data.name, "mono_thread_force_interruption_checkpoint_noraise")) {
5008 target = mono_thread_force_interruption_checkpoint_noraise;
5009 } else if (!strcmp (ji->data.name, "mono_interruption_checkpoint_from_trampoline")) {
5010 target = mono_interruption_checkpoint_from_trampoline;
5011 } else if (!strcmp (ji->data.name, "mono_exception_from_token")) {
5012 target = mono_exception_from_token;
5013 } else if (!strcmp (ji->data.name, "mono_throw_exception")) {
5014 target = mono_get_throw_exception ();
5015 } else if (strstr (ji->data.name, "trampoline_func_") == ji->data.name) {
5016 MonoTrampolineType tramp_type2 = (MonoTrampolineType)atoi (ji->data.name + strlen ("trampoline_func_"));
5017 target = (gpointer)mono_get_trampoline_func (tramp_type2);
5018 } else if (strstr (ji->data.name, "specific_trampoline_lazy_fetch_") == ji->data.name) {
5019 /* atoll is needed because the the offset is unsigned */
5020 guint32 slot;
5021 int res;
5022
5023 res = sscanf (ji->data.name, "specific_trampoline_lazy_fetch_%u", &slot);
5024 g_assert (res == 1);
5025 target = mono_create_specific_trampoline (GUINT_TO_POINTER (slot), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, mono_get_root_domain (), NULL);
5026 target = mono_create_ftnptr_malloc ((guint8 *)target);
5027 } else if (!strcmp (ji->data.name, "debugger_agent_single_step_from_context")) {
5028 target = debugger_agent_single_step_from_context;
5029 } else if (!strcmp (ji->data.name, "debugger_agent_breakpoint_from_context")) {
5030 target = debugger_agent_breakpoint_from_context;
5031 } else if (!strcmp (ji->data.name, "throw_exception_addr")) {
5032 target = mono_get_throw_exception_addr ();
5033 } else if (strstr (ji->data.name, "generic_trampoline_")) {
5034 target = mono_aot_get_trampoline (ji->data.name);
5035 } else if (aot_jit_icall_hash && g_hash_table_lookup (aot_jit_icall_hash, ji->data.name)) {
5036 /* Registered by mono_arch_init () */
5037 target = g_hash_table_lookup (aot_jit_icall_hash, ji->data.name);
5038 } else {
5039 fprintf (stderr, "Unknown relocation '%s'\n", ji->data.name);
5040 g_assert_not_reached ();
5041 target = NULL;
5042 }
5043 } else {
5044 /* Hopefully the code doesn't have patches which need method or
5045 * domain to be set.
5046 */
5047 target = mono_resolve_patch_target (NULL, NULL, (guint8 *)code, ji, FALSE, &error);
5048 mono_error_assert_ok (&error);
5049 g_assert (target);
5050 }
5051
5052 amodule->got [got_slots [pindex]] = target;
5053 }
5054
5055 g_free (got_slots);
5056
5057 mono_mempool_destroy (mp);
5058 }
5059
5060 return code;
5061 }
5062
5063 static gpointer
5064 load_function (MonoAotModule *amodule, const char *name)
5065 {
5066 return load_function_full (amodule, name, NULL);
5067 }
5068
5069 static MonoAotModule*
5070 get_mscorlib_aot_module (void)
5071 {
5072 MonoImage *image;
5073 MonoAotModule *amodule;
5074
5075 image = mono_defaults.corlib;
5076 if (image)
5077 amodule = (MonoAotModule *)image->aot_module;
5078 else
5079 amodule = mscorlib_aot_module;
5080 g_assert (amodule);
5081 return amodule;
5082 }
5083
5084 static void
5085 no_trampolines (void)
5086 {
5087 g_assert_not_reached ();
5088 }
5089
5090 /*
5091 * Return the trampoline identified by NAME from the mscorlib AOT file.
5092 * On ppc64, this returns a function descriptor.
5093 */
5094 gpointer
5095 mono_aot_get_trampoline_full (const char *name, MonoTrampInfo **out_tinfo)
5096 {
5097 MonoAotModule *amodule = get_mscorlib_aot_module ();
5098
5099 if (mono_llvm_only) {
5100 *out_tinfo = NULL;
5101 return no_trampolines;
5102 }
5103
5104 return mono_create_ftnptr_malloc ((guint8 *)load_function_full (amodule, name, out_tinfo));
5105 }
5106
5107 gpointer
5108 mono_aot_get_trampoline (const char *name)
5109 {
5110 MonoTrampInfo *out_tinfo;
5111 gpointer code;
5112
5113 code = mono_aot_get_trampoline_full (name, &out_tinfo);
5114 mono_tramp_info_register (out_tinfo, NULL);
5115
5116 return code;
5117 }
5118
5119 static gpointer
5120 read_unwind_info (MonoAotModule *amodule, MonoTrampInfo *info, const char *symbol_name)
5121 {
5122 gpointer symbol_addr;
5123 guint32 uw_offset, uw_info_len;
5124 guint8 *uw_info;
5125
5126 find_amodule_symbol (amodule, symbol_name, &symbol_addr);
5127
5128 if (!symbol_addr)
5129 return NULL;
5130
5131 uw_offset = *(guint32*)symbol_addr;
5132 uw_info = amodule->unwind_info + uw_offset;
5133 uw_info_len = decode_value (uw_info, &uw_info);
5134
5135 info->uw_info_len = uw_info_len;
5136 if (uw_info_len)
5137 info->uw_info = uw_info;
5138 else
5139 info->uw_info = NULL;
5140
5141 /* If successful return the address of the following data */
5142 return (guint32*)symbol_addr + 1;
5143 }
5144
5145 #ifdef MONOTOUCH
5146 #include <mach/mach.h>
5147
5148 static TrampolinePage* trampoline_pages [MONO_AOT_TRAMP_NUM];
5149
5150 static void
5151 read_page_trampoline_uwinfo (MonoTrampInfo *info, int tramp_type, gboolean is_generic)
5152 {
5153 char symbol_name [128];
5154
5155 if (tramp_type == MONO_AOT_TRAMP_SPECIFIC)
5156 sprintf (symbol_name, "specific_trampolines_page_%s_p", is_generic ? "gen" : "sp");
5157 else if (tramp_type == MONO_AOT_TRAMP_STATIC_RGCTX)
5158 sprintf (symbol_name, "rgctx_trampolines_page_%s_p", is_generic ? "gen" : "sp");
5159 else if (tramp_type == MONO_AOT_TRAMP_IMT)
5160 sprintf (symbol_name, "imt_trampolines_page_%s_p", is_generic ? "gen" : "sp");
5161 else if (tramp_type == MONO_AOT_TRAMP_GSHAREDVT_ARG)
5162 sprintf (symbol_name, "gsharedvt_trampolines_page_%s_p", is_generic ? "gen" : "sp");
5163 else
5164 g_assert_not_reached ();
5165
5166 read_unwind_info (mono_defaults.corlib->aot_module, info, symbol_name);
5167 }
5168
5169 static unsigned char*
5170 get_new_trampoline_from_page (int tramp_type)
5171 {
5172 MonoAotModule *amodule;
5173 MonoImage *image;
5174 TrampolinePage *page;
5175 int count;
5176 void *tpage;
5177 vm_address_t addr, taddr;
5178 kern_return_t ret;
5179 vm_prot_t prot, max_prot;
5180 int psize, specific_trampoline_size;
5181 unsigned char *code;
5182
5183 specific_trampoline_size = 2 * sizeof (gpointer);
5184
5185 mono_aot_page_lock ();
5186 page = trampoline_pages [tramp_type];
5187 if (page && page->trampolines < page->trampolines_end) {
5188 code = page->trampolines;
5189 page->trampolines += specific_trampoline_size;
5190 mono_aot_page_unlock ();
5191 return code;
5192 }
5193 mono_aot_page_unlock ();
5194 /* the trampoline template page is in the mscorlib module */
5195 image = mono_defaults.corlib;
5196 g_assert (image);
5197
5198 psize = MONO_AOT_TRAMP_PAGE_SIZE;
5199
5200 amodule = image->aot_module;
5201 g_assert (amodule);
5202
5203 if (tramp_type == MONO_AOT_TRAMP_SPECIFIC)
5204 tpage = load_function (amodule, "specific_trampolines_page");
5205 else if (tramp_type == MONO_AOT_TRAMP_STATIC_RGCTX)
5206 tpage = load_function (amodule, "rgctx_trampolines_page");
5207 else if (tramp_type == MONO_AOT_TRAMP_IMT)
5208 tpage = load_function (amodule, "imt_trampolines_page");
5209 else if (tramp_type == MONO_AOT_TRAMP_GSHAREDVT_ARG)
5210 tpage = load_function (amodule, "gsharedvt_arg_trampolines_page");
5211 else
5212 g_error ("Incorrect tramp type for trampolines page");
5213 g_assert (tpage);
5214 /*g_warning ("loaded trampolines page at %x", tpage);*/
5215
5216 /* avoid the unlikely case of looping forever */
5217 count = 40;
5218 page = NULL;
5219 while (page == NULL && count-- > 0) {
5220 MonoTrampInfo *gen_info, *sp_info;
5221
5222 addr = 0;
5223 /* allocate two contiguous pages of memory: the first page will contain the data (like a local constant pool)
5224 * while the second will contain the trampolines.
5225 */
5226 do {
5227 ret = vm_allocate (mach_task_self (), &addr, psize * 2, VM_FLAGS_ANYWHERE);
5228 } while (ret == KERN_ABORTED);
5229 if (ret != KERN_SUCCESS) {
5230 g_error ("Cannot allocate memory for trampolines: %d", ret);
5231 break;
5232 }
5233 /*g_warning ("allocated trampoline double page at %x", addr);*/
5234 /* replace the second page with a remapped trampoline page */
5235 taddr = addr + psize;
5236 vm_deallocate (mach_task_self (), taddr, psize);
5237 ret = vm_remap (mach_task_self (), &taddr, psize, 0, FALSE, mach_task_self(), (vm_address_t)tpage, FALSE, &prot, &max_prot, VM_INHERIT_SHARE);
5238 if (ret != KERN_SUCCESS) {
5239 /* someone else got the page, try again */
5240 vm_deallocate (mach_task_self (), addr, psize);
5241 continue;
5242 }
5243 /*g_warning ("remapped trampoline page at %x", taddr);*/
5244
5245 mono_aot_page_lock ();
5246 page = trampoline_pages [tramp_type];
5247 /* some other thread already allocated, so use that to avoid wasting memory */
5248 if (page && page->trampolines < page->trampolines_end) {
5249 code = page->trampolines;
5250 page->trampolines += specific_trampoline_size;
5251 mono_aot_page_unlock ();
5252 vm_deallocate (mach_task_self (), addr, psize);
5253 vm_deallocate (mach_task_self (), taddr, psize);
5254 return code;
5255 }
5256 page = (TrampolinePage*)addr;
5257 page->next = trampoline_pages [tramp_type];
5258 trampoline_pages [tramp_type] = page;
5259 page->trampolines = (void*)(taddr + amodule->info.tramp_page_code_offsets [tramp_type]);
5260 page->trampolines_end = (void*)(taddr + psize - 64);
5261 code = page->trampolines;
5262 page->trampolines += specific_trampoline_size;
5263 mono_aot_page_unlock ();
5264
5265 /* Register the generic part at the beggining of the trampoline page */
5266 gen_info = mono_tramp_info_create (NULL, (guint8*)taddr, amodule->info.tramp_page_code_offsets [tramp_type], NULL, NULL);
5267 read_page_trampoline_uwinfo (gen_info, tramp_type, TRUE);
5268 mono_tramp_info_register (gen_info, NULL);
5269 /*
5270 * FIXME
5271 * Registering each specific trampoline produces a lot of
5272 * MonoJitInfo structures. Jump trampolines are also registered
5273 * separately.
5274 */
5275 if (tramp_type != MONO_AOT_TRAMP_SPECIFIC) {
5276 /* Register the rest of the page as a single trampoline */
5277 sp_info = mono_tramp_info_create (NULL, code, page->trampolines_end - code, NULL, NULL);
5278 read_page_trampoline_uwinfo (sp_info, tramp_type, FALSE);
5279 mono_tramp_info_register (sp_info, NULL);
5280 }
5281 return code;
5282 }
5283 g_error ("Cannot allocate more trampoline pages: %d", ret);
5284 return NULL;
5285 }
5286
5287 #else
5288 static unsigned char*
5289 get_new_trampoline_from_page (int tramp_type)
5290 {
5291 g_error ("Page trampolines not supported.");
5292 return NULL;
5293 }
5294 #endif
5295
5296
5297 static gpointer
5298 get_new_specific_trampoline_from_page (gpointer tramp, gpointer arg)
5299 {
5300 void *code;
5301 gpointer *data;
5302
5303 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_SPECIFIC);
5304
5305 data = (gpointer*)((char*)code - MONO_AOT_TRAMP_PAGE_SIZE);
5306 data [0] = arg;
5307 data [1] = tramp;
5308 /*g_warning ("new trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
5309 return code;
5310
5311 }
5312
5313 static gpointer
5314 get_new_rgctx_trampoline_from_page (gpointer tramp, gpointer arg)
5315 {
5316 void *code;
5317 gpointer *data;
5318
5319 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_STATIC_RGCTX);
5320
5321 data = (gpointer*)((char*)code - MONO_AOT_TRAMP_PAGE_SIZE);
5322 data [0] = arg;
5323 data [1] = tramp;
5324 /*g_warning ("new rgctx trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
5325 return code;
5326
5327 }
5328
5329 static gpointer
5330 get_new_imt_trampoline_from_page (gpointer arg)
5331 {
5332 void *code;
5333 gpointer *data;
5334
5335 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_IMT);
5336
5337 data = (gpointer*)((char*)code - MONO_AOT_TRAMP_PAGE_SIZE);
5338 data [0] = arg;
5339 /*g_warning ("new imt trampoline at %p for data %p, (stored at %p)", code, arg, data);*/
5340 return code;
5341
5342 }
5343
5344 static gpointer
5345 get_new_gsharedvt_arg_trampoline_from_page (gpointer tramp, gpointer arg)
5346 {
5347 void *code;
5348 gpointer *data;
5349
5350 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_GSHAREDVT_ARG);
5351
5352 data = (gpointer*)((char*)code - MONO_AOT_TRAMP_PAGE_SIZE);
5353 data [0] = arg;
5354 data [1] = tramp;
5355 /*g_warning ("new rgctx trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
5356 return code;
5357 }
5358
5359 /* Return a given kind of trampoline */
5360 /* FIXME set unwind info for these trampolines */
5361 static gpointer
5362 get_numerous_trampoline (MonoAotTrampoline tramp_type, int n_got_slots, MonoAotModule **out_amodule, guint32 *got_offset, guint32 *out_tramp_size)
5363 {
5364 MonoImage *image;
5365 MonoAotModule *amodule = get_mscorlib_aot_module ();
5366 int index, tramp_size;
5367
5368 /* Currently, we keep all trampolines in the mscorlib AOT image */
5369 image = mono_defaults.corlib;
5370
5371 *out_amodule = amodule;
5372
5373 mono_aot_lock ();
5374
5375 #ifdef MONOTOUCH
5376 #define MONOTOUCH_TRAMPOLINES_ERROR ". See http://docs.xamarin.com/ios/troubleshooting for instructions on how to fix this condition."
5377 #else
5378 #define MONOTOUCH_TRAMPOLINES_ERROR ""
5379 #endif
5380 if (amodule->trampoline_index [tramp_type] == amodule->info.num_trampolines [tramp_type]) {
5381 g_error ("Ran out of trampolines of type %d in '%s' (limit %d)%s\n",
5382 tramp_type, image ? image->name : "mscorlib", amodule->info.num_trampolines [tramp_type], MONOTOUCH_TRAMPOLINES_ERROR);
5383 }
5384 index = amodule->trampoline_index [tramp_type] ++;
5385
5386 mono_aot_unlock ();
5387
5388 *got_offset = amodule->info.trampoline_got_offset_base [tramp_type] + (index * n_got_slots);
5389
5390 tramp_size = amodule->info.trampoline_size [tramp_type];
5391
5392 if (out_tramp_size)
5393 *out_tramp_size = tramp_size;
5394
5395 return amodule->trampolines [tramp_type] + (index * tramp_size);
5396 }
5397
5398 static void
5399 no_specific_trampoline (void)
5400 {
5401 g_assert_not_reached ();
5402 }
5403
5404 /*
5405 * Return a specific trampoline from the AOT file.
5406 */
5407 gpointer
5408 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
5409 {
5410 MonoAotModule *amodule;
5411 guint32 got_offset, tramp_size;
5412 guint8 *code, *tramp;
5413 static gpointer generic_trampolines [MONO_TRAMPOLINE_NUM];
5414 static gboolean inited;
5415 static guint32 num_trampolines;
5416
5417 if (mono_llvm_only) {
5418 *code_len = 1;
5419 return no_specific_trampoline;
5420 }
5421
5422 if (!inited) {
5423 mono_aot_lock ();
5424
5425 if (!inited) {
5426 mono_counters_register ("Specific trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &num_trampolines);
5427 inited = TRUE;
5428 }
5429
5430 mono_aot_unlock ();
5431 }
5432
5433 num_trampolines ++;
5434
5435 if (!generic_trampolines [tramp_type]) {
5436 char *symbol;
5437
5438 symbol = mono_get_generic_trampoline_name (tramp_type);
5439 generic_trampolines [tramp_type] = mono_aot_get_trampoline (symbol);
5440 g_free (symbol);
5441 }
5442
5443 tramp = (guint8 *)generic_trampolines [tramp_type];
5444 g_assert (tramp);
5445
5446 if (USE_PAGE_TRAMPOLINES) {
5447 code = (guint8 *)get_new_specific_trampoline_from_page (tramp, arg1);
5448 tramp_size = 8;
5449 } else {
5450 code = (guint8 *)get_numerous_trampoline (MONO_AOT_TRAMP_SPECIFIC, 2, &amodule, &got_offset, &tramp_size);
5451
5452 amodule->got [got_offset] = tramp;
5453 amodule->got [got_offset + 1] = arg1;
5454 }
5455
5456 if (code_len)
5457 *code_len = tramp_size;
5458
5459 return code;
5460 }
5461
5462 gpointer
5463 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
5464 {
5465 MonoAotModule *amodule;
5466 guint8 *code;
5467 guint32 got_offset;
5468
5469 if (USE_PAGE_TRAMPOLINES) {
5470 code = (guint8 *)get_new_rgctx_trampoline_from_page (addr, ctx);
5471 } else {
5472 code = (guint8 *)get_numerous_trampoline (MONO_AOT_TRAMP_STATIC_RGCTX, 2, &amodule, &got_offset, NULL);
5473
5474 amodule->got [got_offset] = ctx;
5475 amodule->got [got_offset + 1] = addr;
5476 }
5477
5478 /* The caller expects an ftnptr */
5479 return mono_create_ftnptr (mono_domain_get (), code);
5480 }
5481
5482 gpointer
5483 mono_aot_get_unbox_trampoline (MonoMethod *method)
5484 {
5485 guint32 method_index = mono_metadata_token_index (method->token) - 1;
5486 MonoAotModule *amodule;
5487 gpointer code;
5488 guint32 *ut, *ut_end, *entry;
5489 int low, high, entry_index = 0;
5490 gpointer symbol_addr;
5491 MonoTrampInfo *tinfo;
5492
5493 if (method->is_inflated && !mono_method_is_generic_sharable_full (method, FALSE, FALSE, FALSE)) {
5494 method_index = find_aot_method (method, &amodule);
5495 if (method_index == 0xffffff && mono_method_is_generic_sharable_full (method, FALSE, TRUE, FALSE)) {
5496 MonoMethod *shared = mini_get_shared_method_full (method, FALSE, FALSE);
5497 method_index = find_aot_method (shared, &amodule);
5498 }
5499 if (method_index == 0xffffff && mono_method_is_generic_sharable_full (method, FALSE, TRUE, TRUE)) {
5500 MonoMethod *shared = mini_get_shared_method_full (method, TRUE, TRUE);
5501 method_index = find_aot_method (shared, &amodule);
5502 }
5503 g_assert (method_index != 0xffffff);
5504 } else {
5505 amodule = (MonoAotModule *)method->klass->image->aot_module;
5506 g_assert (amodule);
5507 }
5508
5509 if (amodule->info.llvm_get_unbox_tramp) {
5510 gpointer (*get_tramp) (int) = (gpointer (*)(int))amodule->info.llvm_get_unbox_tramp;
5511 code = get_tramp (method_index);
5512
5513 if (code)
5514 return code;
5515 }
5516
5517 ut = amodule->unbox_trampolines;
5518 ut_end = amodule->unbox_trampolines_end;
5519
5520 /* Do a binary search in the sorted table */
5521 code = NULL;
5522 low = 0;
5523 high = (ut_end - ut);
5524 while (low < high) {
5525 entry_index = (low + high) / 2;
5526 entry = &ut [entry_index];
5527 if (entry [0] < method_index) {
5528 low = entry_index + 1;
5529 } else if (entry [0] > method_index) {
5530 high = entry_index;
5531 } else {
5532 break;
5533 }
5534 }
5535
5536 code = get_call_table_entry (amodule->unbox_trampoline_addresses, entry_index);
5537 g_assert (code);
5538
5539 tinfo = mono_tramp_info_create (NULL, (guint8 *)code, 0, NULL, NULL);
5540
5541 symbol_addr = read_unwind_info (amodule, tinfo, "unbox_trampoline_p");
5542 if (!symbol_addr) {
5543 mono_tramp_info_free (tinfo);
5544 return FALSE;
5545 }
5546
5547 tinfo->code_size = *(guint32*)symbol_addr;
5548 mono_tramp_info_register (tinfo, NULL);
5549
5550 /* The caller expects an ftnptr */
5551 return mono_create_ftnptr (mono_domain_get (), code);
5552 }
5553
5554 gpointer
5555 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
5556 {
5557 char *symbol;
5558 gpointer code;
5559 MonoAotModule *amodule = (MonoAotModule *)mono_defaults.corlib->aot_module;
5560 guint32 index = MONO_RGCTX_SLOT_INDEX (slot);
5561 static int count = 0;
5562
5563 count ++;
5564 if (index >= amodule->info.num_rgctx_fetch_trampolines) {
5565 static gpointer addr;
5566 gpointer *info;
5567
5568 /*
5569 * Use the general version of the rgctx fetch trampoline. It receives a pair of <slot, trampoline> in the rgctx arg reg.
5570 */
5571 if (!addr)
5572 addr = load_function (amodule, "rgctx_fetch_trampoline_general");
5573 info = (void **)mono_domain_alloc0 (mono_get_root_domain (), sizeof (gpointer) * 2);
5574 info [0] = GUINT_TO_POINTER (slot);
5575 info [1] = mono_create_specific_trampoline (GUINT_TO_POINTER (slot), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, mono_get_root_domain (), NULL);
5576 code = mono_aot_get_static_rgctx_trampoline (info, addr);
5577 return mono_create_ftnptr (mono_domain_get (), code);
5578 }
5579
5580 symbol = mono_get_rgctx_fetch_trampoline_name (slot);
5581 code = load_function ((MonoAotModule *)mono_defaults.corlib->aot_module, symbol);
5582 g_free (symbol);
5583 /* The caller expects an ftnptr */
5584 return mono_create_ftnptr (mono_domain_get (), code);
5585 }
5586
5587 static void
5588 no_imt_trampoline (void)
5589 {
5590 g_assert_not_reached ();
5591 }
5592
5593 gpointer
5594 mono_aot_get_imt_trampoline (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
5595 {
5596 guint32 got_offset;
5597 gpointer code;
5598 gpointer *buf;
5599 int i, index, real_count;
5600 MonoAotModule *amodule;
5601
5602 if (mono_llvm_only)
5603 return no_imt_trampoline;
5604
5605 real_count = 0;
5606 for (i = 0; i < count; ++i) {
5607 MonoIMTCheckItem *item = imt_entries [i];
5608
5609 if (item->is_equals)
5610 real_count ++;
5611 }
5612
5613 /* Save the entries into an array */
5614 buf = (void **)mono_domain_alloc (domain, (real_count + 1) * 2 * sizeof (gpointer));
5615 index = 0;
5616 for (i = 0; i < count; ++i) {
5617 MonoIMTCheckItem *item = imt_entries [i];
5618
5619 if (!item->is_equals)
5620 continue;
5621
5622 g_assert (item->key);
5623
5624 buf [(index * 2)] = item->key;
5625 if (item->has_target_code) {
5626 gpointer *p = (gpointer *)mono_domain_alloc (domain, sizeof (gpointer));
5627 *p = item->value.target_code;
5628 buf [(index * 2) + 1] = p;
5629 } else {
5630 buf [(index * 2) + 1] = &(vtable->vtable [item->value.vtable_slot]);
5631 }
5632 index ++;
5633 }
5634 buf [(index * 2)] = NULL;
5635 buf [(index * 2) + 1] = fail_tramp;
5636
5637 if (USE_PAGE_TRAMPOLINES) {
5638 code = get_new_imt_trampoline_from_page (buf);
5639 } else {
5640 code = get_numerous_trampoline (MONO_AOT_TRAMP_IMT, 1, &amodule, &got_offset, NULL);
5641
5642 amodule->got [got_offset] = buf;
5643 }
5644
5645 return code;
5646 }
5647
5648 gpointer
5649 mono_aot_get_gsharedvt_arg_trampoline (gpointer arg, gpointer addr)
5650 {
5651 MonoAotModule *amodule;
5652 guint8 *code;
5653 guint32 got_offset;
5654
5655 if (USE_PAGE_TRAMPOLINES) {
5656 code = (guint8 *)get_new_gsharedvt_arg_trampoline_from_page (addr, arg);
5657 } else {
5658 code = (guint8 *)get_numerous_trampoline (MONO_AOT_TRAMP_GSHAREDVT_ARG, 2, &amodule, &got_offset, NULL);
5659
5660 amodule->got [got_offset] = arg;
5661 amodule->got [got_offset + 1] = addr;
5662 }
5663
5664 /* The caller expects an ftnptr */
5665 return mono_create_ftnptr (mono_domain_get (), code);
5666 }
5667
5668 /*
5669 * mono_aot_set_make_unreadable:
5670 *
5671 * Set whenever to make all mmaped memory unreadable. In conjuction with a
5672 * SIGSEGV handler, this is useful to find out which pages the runtime tries to read.
5673 */
5674 void
5675 mono_aot_set_make_unreadable (gboolean unreadable)
5676 {
5677 static int inited;
5678
5679 make_unreadable = unreadable;
5680
5681 if (make_unreadable && !inited) {
5682 mono_counters_register ("AOT: pagefaults", MONO_COUNTER_JIT | MONO_COUNTER_INT, &n_pagefaults);
5683 }
5684 }
5685
5686 typedef struct {
5687 MonoAotModule *module;
5688 guint8 *ptr;
5689 } FindMapUserData;
5690
5691 static void
5692 find_map (gpointer key, gpointer value, gpointer user_data)
5693 {
5694 MonoAotModule *module = (MonoAotModule*)value;
5695 FindMapUserData *data = (FindMapUserData*)user_data;
5696
5697 if (!data->module)
5698 if ((data->ptr >= module->mem_begin) && (data->ptr < module->mem_end))
5699 data->module = module;
5700 }
5701
5702 static MonoAotModule*
5703 find_module_for_addr (void *ptr)
5704 {
5705 FindMapUserData data;
5706
5707 if (!make_unreadable)
5708 return NULL;
5709
5710 data.module = NULL;
5711 data.ptr = (guint8*)ptr;
5712
5713 mono_aot_lock ();
5714 g_hash_table_foreach (aot_modules, (GHFunc)find_map, &data);
5715 mono_aot_unlock ();
5716
5717 return data.module;
5718 }
5719
5720 /*
5721 * mono_aot_is_pagefault:
5722 *
5723 * Should be called from a SIGSEGV signal handler to find out whenever @ptr is
5724 * within memory allocated by this module.
5725 */
5726 gboolean
5727 mono_aot_is_pagefault (void *ptr)
5728 {
5729 if (!make_unreadable)
5730 return FALSE;
5731
5732 /*
5733 * Not signal safe, but SIGSEGV's are synchronous, and
5734 * this is only turned on by a MONO_DEBUG option.
5735 */
5736 return find_module_for_addr (ptr) != NULL;
5737 }
5738
5739 /*
5740 * mono_aot_handle_pagefault:
5741 *
5742 * Handle a pagefault caused by an unreadable page by making it readable again.
5743 */
5744 void
5745 mono_aot_handle_pagefault (void *ptr)
5746 {
5747 #ifndef PLATFORM_WIN32
5748 guint8* start = (guint8*)ROUND_DOWN (((gssize)ptr), mono_pagesize ());
5749 int res;
5750
5751 mono_aot_lock ();
5752 res = mono_mprotect (start, mono_pagesize (), MONO_MMAP_READ|MONO_MMAP_WRITE|MONO_MMAP_EXEC);
5753 g_assert (res == 0);
5754
5755 n_pagefaults ++;
5756 mono_aot_unlock ();
5757 #endif
5758 }
5759
5760 #else
5761 /* AOT disabled */
5762
5763 void
5764 mono_aot_init (void)
5765 {
5766 }
5767
5768 void
5769 mono_aot_cleanup (void)
5770 {
5771 }
5772
5773 guint32
5774 mono_aot_find_method_index (MonoMethod *method)
5775 {
5776 g_assert_not_reached ();
5777 return 0;
5778 }
5779
5780 void
5781 mono_aot_init_llvm_method (gpointer aot_module, guint32 method_index)
5782 {
5783 }
5784
5785 void
5786 mono_aot_init_gshared_method_this (gpointer aot_module, guint32 method_index, MonoObject *this)
5787 {
5788 }
5789
5790 void
5791 mono_aot_init_gshared_method_mrgctx (gpointer aot_module, guint32 method_index, MonoMethodRuntimeGenericContext *rgctx)
5792 {
5793 }
5794
5795 void
5796 mono_aot_init_gshared_method_vtable (gpointer aot_module, guint32 method_index, MonoVTable *vtable)
5797 {
5798 }
5799
5800 gpointer
5801 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
5802 {
5803 return NULL;
5804 }
5805
5806 gpointer
5807 mono_aot_get_method_checked (MonoDomain *domain,
5808 MonoMethod *method, MonoError *error)
5809 {
5810 mono_error_init (error);
5811 return NULL;
5812 }
5813
5814 gboolean
5815 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
5816 {
5817 return FALSE;
5818 }
5819
5820 gboolean
5821 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
5822 {
5823 return FALSE;
5824 }
5825
5826 gboolean
5827 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
5828 {
5829 return FALSE;
5830 }
5831
5832 MonoJitInfo *
5833 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
5834 {
5835 return NULL;
5836 }
5837
5838 gpointer
5839 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token, MonoError *error)
5840 {
5841 mono_error_init (error);
5842 return NULL;
5843 }
5844
5845 guint8*
5846 mono_aot_get_plt_entry (guint8 *code)
5847 {
5848 return NULL;
5849 }
5850
5851 gpointer
5852 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code, MonoError *error)
5853 {
5854 return NULL;
5855 }
5856
5857 void
5858 mono_aot_patch_plt_entry (guint8 *code, guint8 *plt_entry, gpointer *got, mgreg_t *regs, guint8 *addr)
5859 {
5860 }
5861
5862 gpointer
5863 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot, MonoError *error)
5864 {
5865 mono_error_init (error);
5866
5867 return NULL;
5868 }
5869
5870 guint32
5871 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
5872 {
5873 g_assert_not_reached ();
5874
5875 return 0;
5876 }
5877
5878 gpointer
5879 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
5880 {
5881 g_assert_not_reached ();
5882 return NULL;
5883 }
5884
5885 gpointer
5886 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
5887 {
5888 g_assert_not_reached ();
5889 return NULL;
5890 }
5891
5892 gpointer
5893 mono_aot_get_trampoline_full (const char *name, MonoTrampInfo **out_tinfo)
5894 {
5895 g_assert_not_reached ();
5896 return NULL;
5897 }
5898
5899 gpointer
5900 mono_aot_get_trampoline (const char *name)
5901 {
5902 g_assert_not_reached ();
5903 return NULL;
5904 }
5905
5906 gpointer
5907 mono_aot_get_unbox_trampoline (MonoMethod *method)
5908 {
5909 g_assert_not_reached ();
5910 return NULL;
5911 }
5912
5913 gpointer
5914 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
5915 {
5916 g_assert_not_reached ();
5917 return NULL;
5918 }
5919
5920 gpointer
5921 mono_aot_get_imt_trampoline (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
5922 {
5923 g_assert_not_reached ();
5924 return NULL;
5925 }
5926
5927 gpointer
5928 mono_aot_get_gsharedvt_arg_trampoline (gpointer arg, gpointer addr)
5929 {
5930 g_assert_not_reached ();
5931 return NULL;
5932 }
5933
5934 void
5935 mono_aot_set_make_unreadable (gboolean unreadable)
5936 {
5937 }
5938
5939 gboolean
5940 mono_aot_is_pagefault (void *ptr)
5941 {
5942 return FALSE;
5943 }
5944
5945 void
5946 mono_aot_handle_pagefault (void *ptr)
5947 {
5948 }
5949
5950 guint8*
5951 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
5952 {
5953 g_assert_not_reached ();
5954 return NULL;
5955 }
5956
5957 void
5958 mono_aot_register_jit_icall (const char *name, gpointer addr)
5959 {
5960 }
5961
5962 #endif
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