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[ci] Bump timeout in ms-test-suite
[mono-project.git] / mono / mini / aot-runtime.c
blob7d9a9114dbb2014c993cf961c7aa23a784b227fc
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 case MONO_WRAPPER_ISINST: {
908 MonoClass *klass = decode_klass_ref (module, p, &p, error);
909 if (!klass)
910 return FALSE;
911 if (wrapper_type == MONO_WRAPPER_LDFLD)
912 ref->method = mono_marshal_get_ldfld_wrapper (&klass->byval_arg);
913 else if (wrapper_type == MONO_WRAPPER_LDFLDA)
914 ref->method = mono_marshal_get_ldflda_wrapper (&klass->byval_arg);
915 else if (wrapper_type == MONO_WRAPPER_STFLD)
916 ref->method = mono_marshal_get_stfld_wrapper (&klass->byval_arg);
917 else if (wrapper_type == MONO_WRAPPER_ISINST)
918 ref->method = mono_marshal_get_isinst (klass);
919 else {
920 mono_error_set_bad_image_name (error, module->aot_name, "Unknown AOT wrapper type %d", wrapper_type);
921 return FALSE;
922 }
923 break;
924 }
925 #endif
926 case MONO_WRAPPER_ALLOC: {
927 int atype = decode_value (p, &p);
928 ManagedAllocatorVariant variant =
929 mono_profiler_get_events () & MONO_PROFILE_ALLOCATIONS ?
930 MANAGED_ALLOCATOR_SLOW_PATH : MANAGED_ALLOCATOR_REGULAR;
931
932 ref->method = mono_gc_get_managed_allocator_by_type (atype, variant);
933 /* Try to fallback to the slow path version */
934 if (!ref->method && variant == MANAGED_ALLOCATOR_REGULAR)
935 ref->method = mono_gc_get_managed_allocator_by_type (atype, MANAGED_ALLOCATOR_SLOW_PATH);
936 if (!ref->method) {
937 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");
938 return FALSE;
939 }
940 break;
941 }
942 case MONO_WRAPPER_WRITE_BARRIER: {
943 ref->method = mono_gc_get_write_barrier ();
944 break;
945 }
946 case MONO_WRAPPER_STELEMREF: {
947 int subtype = decode_value (p, &p);
948
949 if (subtype == WRAPPER_SUBTYPE_NONE) {
950 ref->method = mono_marshal_get_stelemref ();
951 } else if (subtype == WRAPPER_SUBTYPE_VIRTUAL_STELEMREF) {
952 int kind;
953
954 kind = decode_value (p, &p);
955
956 /* Can't decode this */
957 if (!target)
958 return FALSE;
959 if (target->wrapper_type == MONO_WRAPPER_STELEMREF) {
960 info = mono_marshal_get_wrapper_info (target);
961
962 g_assert (info);
963 if (info->subtype == subtype && info->d.virtual_stelemref.kind == kind)
964 ref->method = target;
965 else
966 return FALSE;
967 } else {
968 return FALSE;
969 }
970 } else {
971 mono_error_set_bad_image_name (error, module->aot_name, "Invalid STELEMREF subtype %d", subtype);
972 return FALSE;
973 }
974 break;
975 }
976 case MONO_WRAPPER_SYNCHRONIZED: {
977 MonoMethod *m = decode_resolve_method_ref (module, p, &p, error);
978 if (!m)
979 return FALSE;
980 ref->method = mono_marshal_get_synchronized_wrapper (m);
981 break;
982 }
983 case MONO_WRAPPER_UNKNOWN: {
984 int subtype = decode_value (p, &p);
985
986 if (subtype == WRAPPER_SUBTYPE_PTR_TO_STRUCTURE || subtype == WRAPPER_SUBTYPE_STRUCTURE_TO_PTR) {
987 MonoClass *klass = decode_klass_ref (module, p, &p, error);
988 if (!klass)
989 return FALSE;
990
991 if (!target)
992 return FALSE;
993 if (klass != target->klass)
994 return FALSE;
995
996 if (subtype == WRAPPER_SUBTYPE_PTR_TO_STRUCTURE) {
997 if (strcmp (target->name, "PtrToStructure"))
998 return FALSE;
999 ref->method = mono_marshal_get_ptr_to_struct (klass);
1000 } else {
1001 if (strcmp (target->name, "StructureToPtr"))
1002 return FALSE;
1003 ref->method = mono_marshal_get_struct_to_ptr (klass);
1004 }
1005 } else if (subtype == WRAPPER_SUBTYPE_SYNCHRONIZED_INNER) {
1006 MonoMethod *m = decode_resolve_method_ref (module, p, &p, error);
1007 if (!m)
1008 return FALSE;
1009 ref->method = mono_marshal_get_synchronized_inner_wrapper (m);
1010 } else if (subtype == WRAPPER_SUBTYPE_ARRAY_ACCESSOR) {
1011 MonoMethod *m = decode_resolve_method_ref (module, p, &p, error);
1012 if (!m)
1013 return FALSE;
1014 ref->method = mono_marshal_get_array_accessor_wrapper (m);
1015 } else if (subtype == WRAPPER_SUBTYPE_GSHAREDVT_IN) {
1016 ref->method = mono_marshal_get_gsharedvt_in_wrapper ();
1017 } else if (subtype == WRAPPER_SUBTYPE_GSHAREDVT_OUT) {
1018 ref->method = mono_marshal_get_gsharedvt_out_wrapper ();
1019 } else if (subtype == WRAPPER_SUBTYPE_GSHAREDVT_IN_SIG) {
1020 MonoMethodSignature *sig = decode_signature (module, p, &p);
1021 if (!sig)
1022 return FALSE;
1023 ref->method = mini_get_gsharedvt_in_sig_wrapper (sig);
1024 } else if (subtype == WRAPPER_SUBTYPE_GSHAREDVT_OUT_SIG) {
1025 MonoMethodSignature *sig = decode_signature (module, p, &p);
1026 if (!sig)
1027 return FALSE;
1028 ref->method = mini_get_gsharedvt_out_sig_wrapper (sig);
1029 } else {
1030 mono_error_set_bad_image_name (error, module->aot_name, "Invalid UNKNOWN wrapper subtype %d", subtype);
1031 return FALSE;
1032 }
1033 break;
1034 }
1035 case MONO_WRAPPER_MANAGED_TO_MANAGED: {
1036 int subtype = decode_value (p, &p);
1037
1038 if (subtype == WRAPPER_SUBTYPE_ELEMENT_ADDR) {
1039 int rank = decode_value (p, &p);
1040 int elem_size = decode_value (p, &p);
1041
1042 ref->method = mono_marshal_get_array_address (rank, elem_size);
1043 } else if (subtype == WRAPPER_SUBTYPE_STRING_CTOR) {
1044 MonoMethod *m;
1045
1046 m = decode_resolve_method_ref (module, p, &p, error);
1047 if (!m)
1048 return FALSE;
1049
1050 if (!target)
1051 return FALSE;
1052 g_assert (target->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED);
1053
1054 info = mono_marshal_get_wrapper_info (target);
1055 if (info && info->subtype == subtype && info->d.string_ctor.method == m)
1056 ref->method = target;
1057 else
1058 return FALSE;
1059 }
1060 break;
1061 }
1062 case MONO_WRAPPER_MANAGED_TO_NATIVE: {
1063 MonoMethod *m;
1064 int subtype = decode_value (p, &p);
1065 char *name;
1066
1067 if (subtype == WRAPPER_SUBTYPE_ICALL_WRAPPER) {
1068 if (!target)
1069 return FALSE;
1070
1071 name = (char*)p;
1072 if (strcmp (target->name, name) != 0)
1073 return FALSE;
1074 ref->method = target;
1075 } else {
1076 m = decode_resolve_method_ref (module, p, &p, error);
1077 if (!m)
1078 return FALSE;
1079
1080 /* This should only happen when looking for an extra method */
1081 if (!target)
1082 return FALSE;
1083 if (mono_marshal_method_from_wrapper (target) == m)
1084 ref->method = target;
1085 else
1086 return FALSE;
1087 }
1088 break;
1089 }
1090 case MONO_WRAPPER_CASTCLASS: {
1091 int subtype = decode_value (p, &p);
1092
1093 if (subtype == WRAPPER_SUBTYPE_CASTCLASS_WITH_CACHE)
1094 ref->method = mono_marshal_get_castclass_with_cache ();
1095 else if (subtype == WRAPPER_SUBTYPE_ISINST_WITH_CACHE)
1096 ref->method = mono_marshal_get_isinst_with_cache ();
1097 else {
1098 mono_error_set_bad_image_name (error, module->aot_name, "Invalid CASTCLASS wrapper subtype %d", subtype);
1099 return FALSE;
1100 }
1101 break;
1102 }
1103 case MONO_WRAPPER_RUNTIME_INVOKE: {
1104 int subtype = decode_value (p, &p);
1105
1106 if (!target)
1107 return FALSE;
1108
1109 if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_DYNAMIC) {
1110 if (strcmp (target->name, "runtime_invoke_dynamic") != 0)
1111 return FALSE;
1112 ref->method = target;
1113 } else if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_DIRECT) {
1114 /* Direct wrapper */
1115 MonoMethod *m = decode_resolve_method_ref (module, p, &p, error);
1116 if (!m)
1117 return FALSE;
1118 ref->method = mono_marshal_get_runtime_invoke (m, FALSE);
1119 } else if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_VIRTUAL) {
1120 /* Virtual direct wrapper */
1121 MonoMethod *m = decode_resolve_method_ref (module, p, &p, error);
1122 if (!m)
1123 return FALSE;
1124 ref->method = mono_marshal_get_runtime_invoke (m, TRUE);
1125 } else {
1126 MonoMethodSignature *sig;
1127
1128 sig = decode_signature_with_target (module, NULL, p, &p);
1129 info = mono_marshal_get_wrapper_info (target);
1130 g_assert (info);
1131
1132 if (info->subtype != subtype)
1133 return FALSE;
1134 g_assert (info->d.runtime_invoke.sig);
1135 if (mono_metadata_signature_equal (sig, info->d.runtime_invoke.sig))
1136 ref->method = target;
1137 else
1138 return FALSE;
1139 }
1140 break;
1141 }
1142 case MONO_WRAPPER_DELEGATE_INVOKE:
1143 case MONO_WRAPPER_DELEGATE_BEGIN_INVOKE:
1144 case MONO_WRAPPER_DELEGATE_END_INVOKE: {
1145 gboolean is_inflated = decode_value (p, &p);
1146 WrapperSubtype subtype;
1147
1148 if (is_inflated) {
1149 MonoClass *klass;
1150 MonoMethod *invoke, *wrapper;
1151
1152 klass = decode_klass_ref (module, p, &p, error);
1153 if (!klass)
1154 return FALSE;
1155
1156 switch (wrapper_type) {
1157 case MONO_WRAPPER_DELEGATE_INVOKE:
1158 invoke = mono_get_delegate_invoke (klass);
1159 wrapper = mono_marshal_get_delegate_invoke (invoke, NULL);
1160 break;
1161 case MONO_WRAPPER_DELEGATE_BEGIN_INVOKE:
1162 invoke = mono_get_delegate_begin_invoke (klass);
1163 wrapper = mono_marshal_get_delegate_begin_invoke (invoke);
1164 break;
1165 case MONO_WRAPPER_DELEGATE_END_INVOKE:
1166 invoke = mono_get_delegate_end_invoke (klass);
1167 wrapper = mono_marshal_get_delegate_end_invoke (invoke);
1168 break;
1169 default:
1170 g_assert_not_reached ();
1171 break;
1172 }
1173 if (target) {
1174 /*
1175 * Due to the way mini_get_shared_method () works, we could end up with
1176 * multiple copies of the same wrapper.
1177 */
1178 if (wrapper->klass != target->klass)
1179 return FALSE;
1180 ref->method = target;
1181 } else {
1182 ref->method = wrapper;
1183 }
1184 } else {
1185 /*
1186 * These wrappers are associated with a signature, not with a method.
1187 * Since we can't decode them into methods, they need a target method.
1188 */
1189 if (!target)
1190 return FALSE;
1191
1192 if (wrapper_type == MONO_WRAPPER_DELEGATE_INVOKE) {
1193 subtype = (WrapperSubtype)decode_value (p, &p);
1194 info = mono_marshal_get_wrapper_info (target);
1195 if (info) {
1196 if (info->subtype != subtype)
1197 return FALSE;
1198 } else {
1199 if (subtype != WRAPPER_SUBTYPE_NONE)
1200 return FALSE;
1201 }
1202 }
1203 if (sig_matches_target (module, target, p, &p))
1204 ref->method = target;
1205 else
1206 return FALSE;
1207 }
1208 break;
1209 }
1210 case MONO_WRAPPER_NATIVE_TO_MANAGED: {
1211 MonoMethod *m;
1212 MonoClass *klass;
1213
1214 m = decode_resolve_method_ref (module, p, &p, error);
1215 if (!m)
1216 return FALSE;
1217 klass = decode_klass_ref (module, p, &p, error);
1218 if (!klass)
1219 return FALSE;
1220 ref->method = mono_marshal_get_managed_wrapper (m, klass, 0);
1221 break;
1222 }
1223 default:
1224 g_assert_not_reached ();
1225 }
1226 } else if (image_index == MONO_AOT_METHODREF_METHODSPEC) {
1227 image_index = decode_value (p, &p);
1228 ref->token = decode_value (p, &p);
1229
1230 image = load_image (module, image_index, error);
1231 if (!image)
1232 return FALSE;
1233 } else if (image_index == MONO_AOT_METHODREF_GINST) {
1234 MonoClass *klass;
1235 MonoGenericContext ctx;
1236
1237 /*
1238 * These methods do not have a token which resolves them, so we
1239 * resolve them immediately.
1240 */
1241 klass = decode_klass_ref (module, p, &p, error);
1242 if (!klass)
1243 return FALSE;
1244
1245 if (target && target->klass != klass)
1246 return FALSE;
1247
1248 image_index = decode_value (p, &p);
1249 ref->token = decode_value (p, &p);
1250
1251 image = load_image (module, image_index, error);
1252 if (!image)
1253 return FALSE;
1254
1255 ref->method = mono_get_method_checked (image, ref->token, NULL, NULL, error);
1256 if (!ref->method)
1257 return FALSE;
1258
1259
1260 memset (&ctx, 0, sizeof (ctx));
1261
1262 if (FALSE && mono_class_is_ginst (klass)) {
1263 ctx.class_inst = mono_class_get_generic_class (klass)->context.class_inst;
1264 ctx.method_inst = NULL;
1265
1266 ref->method = mono_class_inflate_generic_method_full_checked (ref->method, klass, &ctx, error);
1267 if (!ref->method)
1268 return FALSE;
1269 }
1270
1271 memset (&ctx, 0, sizeof (ctx));
1272
1273 if (!decode_generic_context (module, &ctx, p, &p, error))
1274 return FALSE;
1275
1276 ref->method = mono_class_inflate_generic_method_full_checked (ref->method, klass, &ctx, error);
1277 if (!ref->method)
1278 return FALSE;
1279
1280 } else if (image_index == MONO_AOT_METHODREF_ARRAY) {
1281 MonoClass *klass;
1282 int method_type;
1283
1284 klass = decode_klass_ref (module, p, &p, error);
1285 if (!klass)
1286 return FALSE;
1287 method_type = decode_value (p, &p);
1288 switch (method_type) {
1289 case 0:
1290 ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank);
1291 break;
1292 case 1:
1293 ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank * 2);
1294 break;
1295 case 2:
1296 ref->method = mono_class_get_method_from_name (klass, "Get", -1);
1297 break;
1298 case 3:
1299 ref->method = mono_class_get_method_from_name (klass, "Address", -1);
1300 break;
1301 case 4:
1302 ref->method = mono_class_get_method_from_name (klass, "Set", -1);
1303 break;
1304 default:
1305 mono_error_set_bad_image_name (error, module->aot_name, "Invalid METHODREF_ARRAY method type %d", method_type);
1306 return FALSE;
1307 }
1308 } else {
1309 if (image_index == MONO_AOT_METHODREF_LARGE_IMAGE_INDEX) {
1310 image_index = decode_value (p, &p);
1311 value = decode_value (p, &p);
1312 }
1313
1314 ref->token = MONO_TOKEN_METHOD_DEF | (value & 0xffffff);
1315
1316 image = load_image (module, image_index, error);
1317 if (!image)
1318 return FALSE;
1319 }
1320
1321 *endbuf = p;
1322
1323 ref->image = image;
1324
1325 return TRUE;
1326 }
1327
1328 static gboolean
1329 decode_method_ref (MonoAotModule *module, MethodRef *ref, guint8 *buf, guint8 **endbuf, MonoError *error)
1330 {
1331 return decode_method_ref_with_target (module, ref, NULL, buf, endbuf, error);
1332 }
1333
1334 /*
1335 * decode_resolve_method_ref_with_target:
1336 *
1337 * Similar to decode_method_ref, but resolve and return the method itself.
1338 */
1339 static MonoMethod*
1340 decode_resolve_method_ref_with_target (MonoAotModule *module, MonoMethod *target, guint8 *buf, guint8 **endbuf, MonoError *error)
1341 {
1342 MethodRef ref;
1343
1344 mono_error_init (error);
1345
1346 if (!decode_method_ref_with_target (module, &ref, target, buf, endbuf, error))
1347 return NULL;
1348 if (ref.method)
1349 return ref.method;
1350 if (!ref.image) {
1351 mono_error_set_bad_image_name (error, module->aot_name, "No image found for methodref with target");
1352 return NULL;
1353 }
1354 return mono_get_method_checked (ref.image, ref.token, NULL, NULL, error);
1355 }
1356
1357 static MonoMethod*
1358 decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf, MonoError *error)
1359 {
1360 return decode_resolve_method_ref_with_target (module, NULL, buf, endbuf, error);
1361 }
1362
1363 #ifdef ENABLE_AOT_CACHE
1364
1365 /* AOT CACHE */
1366
1367 /*
1368 * FIXME:
1369 * - Add options for controlling the cache size
1370 * - Handle full cache by deleting old assemblies lru style
1371 * - Maybe add a threshold after an assembly is AOT compiled
1372 * - Add options for enabling this for specific main assemblies
1373 */
1374
1375 /* The cache directory */
1376 static char *cache_dir;
1377
1378 /* The number of assemblies AOTed in this run */
1379 static int cache_count;
1380
1381 /* Whenever to AOT in-process */
1382 static gboolean in_process;
1383
1384 static void
1385 collect_assemblies (gpointer data, gpointer user_data)
1386 {
1387 MonoAssembly *ass = data;
1388 GSList **l = user_data;
1389
1390 *l = g_slist_prepend (*l, ass);
1391 }
1392
1393 #define SHA1_DIGEST_LENGTH 20
1394
1395 /*
1396 * get_aot_config_hash:
1397 *
1398 * Return a hash for all the version information an AOT module depends on.
1399 */
1400 static G_GNUC_UNUSED char*
1401 get_aot_config_hash (MonoAssembly *assembly)
1402 {
1403 char *build_info;
1404 GSList *l, *assembly_list = NULL;
1405 GString *s;
1406 int i;
1407 guint8 digest [SHA1_DIGEST_LENGTH];
1408 char *digest_str;
1409
1410 build_info = mono_get_runtime_build_info ();
1411
1412 s = g_string_new (build_info);
1413
1414 mono_assembly_foreach (collect_assemblies, &assembly_list);
1415
1416 /*
1417 * The assembly list includes the current assembly as well, no need
1418 * to add it.
1419 */
1420 for (l = assembly_list; l; l = l->next) {
1421 MonoAssembly *ass = l->data;
1422
1423 g_string_append (s, "_");
1424 g_string_append (s, ass->aname.name);
1425 g_string_append (s, "_");
1426 g_string_append (s, ass->image->guid);
1427 }
1428
1429 for (i = 0; i < s->len; ++i) {
1430 if (!isalnum (s->str [i]) && s->str [i] != '-')
1431 s->str [i] = '_';
1432 }
1433
1434 mono_sha1_get_digest ((guint8*)s->str, s->len, digest);
1435
1436 digest_str = g_malloc0 ((SHA1_DIGEST_LENGTH * 2) + 1);
1437 for (i = 0; i < SHA1_DIGEST_LENGTH; ++i)
1438 sprintf (digest_str + (i * 2), "%02x", digest [i]);
1439
1440 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: file dependencies: %s, hash %s", s->str, digest_str);
1441
1442 g_string_free (s, TRUE);
1443
1444 return digest_str;
1445 }
1446
1447 static void
1448 aot_cache_init (void)
1449 {
1450 if (mono_aot_only)
1451 return;
1452 enable_aot_cache = TRUE;
1453 in_process = TRUE;
1454 }
1455
1456 /*
1457 * aot_cache_load_module:
1458 *
1459 * Load the AOT image corresponding to ASSEMBLY from the aot cache, AOTing it if neccessary.
1460 */
1461 static MonoDl*
1462 aot_cache_load_module (MonoAssembly *assembly, char **aot_name)
1463 {
1464 MonoAotCacheConfig *config;
1465 GSList *l;
1466 char *fname, *tmp2, *aot_options, *failure_fname;
1467 const char *home;
1468 MonoDl *module;
1469 gboolean res;
1470 gint exit_status;
1471 char *hash;
1472 int pid;
1473 gboolean enabled;
1474 FILE *failure_file;
1475
1476 *aot_name = NULL;
1477
1478 if (image_is_dynamic (assembly->image))
1479 return NULL;
1480
1481 /* Check in the list of assemblies enabled for aot caching */
1482 config = mono_get_aot_cache_config ();
1483
1484 enabled = FALSE;
1485 if (config->apps) {
1486 MonoDomain *domain = mono_domain_get ();
1487 MonoAssembly *entry_assembly = domain->entry_assembly;
1488
1489 // FIXME: This cannot be used for mscorlib during startup, since entry_assembly is not set yet
1490 for (l = config->apps; l; l = l->next) {
1491 char *n = l->data;
1492
1493 if ((entry_assembly && !strcmp (entry_assembly->aname.name, n)) || (!entry_assembly && !strcmp (assembly->aname.name, n)))
1494 break;
1495 }
1496 if (l)
1497 enabled = TRUE;
1498 }
1499
1500 if (!enabled) {
1501 for (l = config->assemblies; l; l = l->next) {
1502 char *n = l->data;
1503
1504 if (!strcmp (assembly->aname.name, n))
1505 break;
1506 }
1507 if (l)
1508 enabled = TRUE;
1509 }
1510 if (!enabled)
1511 return NULL;
1512
1513 if (!cache_dir) {
1514 home = g_get_home_dir ();
1515 if (!home)
1516 return NULL;
1517 cache_dir = g_strdup_printf ("%s/Library/Caches/mono/aot-cache", home);
1518 if (!g_file_test (cache_dir, G_FILE_TEST_EXISTS|G_FILE_TEST_IS_DIR))
1519 g_mkdir_with_parents (cache_dir, 0777);
1520 }
1521
1522 /*
1523 * The same assembly can be used in multiple configurations, i.e. multiple
1524 * versions of the runtime, with multiple versions of dependent assemblies etc.
1525 * To handle this, we compute a version string containing all this information, hash it,
1526 * and use the hash as a filename suffix.
1527 */
1528 hash = get_aot_config_hash (assembly);
1529
1530 tmp2 = g_strdup_printf ("%s-%s%s", assembly->image->assembly_name, hash, MONO_SOLIB_EXT);
1531 fname = g_build_filename (cache_dir, tmp2, NULL);
1532 *aot_name = fname;
1533 g_free (tmp2);
1534
1535 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: loading from cache: '%s'.", fname);
1536 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
1537
1538 if (module) {
1539 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: found in cache: '%s'.", fname);
1540 return module;
1541 }
1542
1543 if (!strcmp (assembly->aname.name, "mscorlib") && !mscorlib_aot_loaded)
1544 /*
1545 * Can't AOT this during startup, so we AOT it when called later from
1546 * mono_aot_get_method ().
1547 */
1548 return NULL;
1549
1550 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: not found.");
1551
1552 /* Only AOT one assembly per run to avoid slowing down execution too much */
1553 if (cache_count > 0)
1554 return NULL;
1555 cache_count ++;
1556
1557 /* Check for previous failure */
1558 failure_fname = g_strdup_printf ("%s.failure", fname);
1559 failure_file = fopen (failure_fname, "r");
1560 if (failure_file) {
1561 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: assembly '%s' previously failed to compile '%s' ('%s')... ", assembly->image->name, fname, failure_fname);
1562 g_free (failure_fname);
1563 return NULL;
1564 } else {
1565 g_free (failure_fname);
1566 fclose (failure_file);
1567 }
1568
1569 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: compiling assembly '%s', logfile: '%s.log'... ", assembly->image->name, fname);
1570
1571 /*
1572 * We need to invoke the AOT compiler here. There are multiple approaches:
1573 * - spawn a new runtime process. This can be hard when running with mkbundle, and
1574 * its hard to make the new process load the same set of assemblies.
1575 * - doing it in-process. This exposes the current process to bugs/leaks/side effects of
1576 * the AOT compiler.
1577 * - fork a new process and do the work there.
1578 */
1579 if (in_process) {
1580 aot_options = g_strdup_printf ("outfile=%s,internal-logfile=%s.log%s%s", fname, fname, config->aot_options ? "," : "", config->aot_options ? config->aot_options : "");
1581 /* Maybe due this in another thread ? */
1582 res = mono_compile_assembly (assembly, mono_parse_default_optimizations (NULL), aot_options);
1583 if (res) {
1584 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: compilation failed.");
1585 failure_fname = g_strdup_printf ("%s.failure", fname);
1586 failure_file = fopen (failure_fname, "a+");
1587 fclose (failure_file);
1588 g_free (failure_fname);
1589 } else {
1590 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: compilation succeeded.");
1591 }
1592 } else {
1593 /*
1594 * - Avoid waiting for the aot process to finish ?
1595 * (less overhead, but multiple processes could aot the same assembly at the same time)
1596 */
1597 pid = fork ();
1598 if (pid == 0) {
1599 FILE *logfile;
1600 char *logfile_name;
1601
1602 /* Child */
1603
1604 logfile_name = g_strdup_printf ("%s/aot.log", cache_dir);
1605 logfile = fopen (logfile_name, "a+");
1606 g_free (logfile_name);
1607
1608 dup2 (fileno (logfile), 1);
1609 dup2 (fileno (logfile), 2);
1610
1611 aot_options = g_strdup_printf ("outfile=%s", fname);
1612 res = mono_compile_assembly (assembly, mono_parse_default_optimizations (NULL), aot_options);
1613 if (!res) {
1614 exit (1);
1615 } else {
1616 exit (0);
1617 }
1618 } else {
1619 /* Parent */
1620 waitpid (pid, &exit_status, 0);
1621 if (!WIFEXITED (exit_status) && (WEXITSTATUS (exit_status) == 0))
1622 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: failed.");
1623 else
1624 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: succeeded.");
1625 }
1626 }
1627
1628 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
1629
1630 return module;
1631 }
1632
1633 #else
1634
1635 static void
1636 aot_cache_init (void)
1637 {
1638 }
1639
1640 static MonoDl*
1641 aot_cache_load_module (MonoAssembly *assembly, char **aot_name)
1642 {
1643 return NULL;
1644 }
1645
1646 #endif
1647
1648 static void
1649 find_symbol (MonoDl *module, gpointer *globals, const char *name, gpointer *value)
1650 {
1651 if (globals) {
1652 int global_index;
1653 guint16 *table, *entry;
1654 guint16 table_size;
1655 guint32 hash;
1656 char *symbol = (char*)name;
1657
1658 #ifdef TARGET_MACH
1659 symbol = g_strdup_printf ("_%s", name);
1660 #endif
1661
1662 /* The first entry points to the hash */
1663 table = (guint16 *)globals [0];
1664 globals ++;
1665
1666 table_size = table [0];
1667 table ++;
1668
1669 hash = mono_metadata_str_hash (symbol) % table_size;
1670
1671 entry = &table [hash * 2];
1672
1673 /* Search the hash for the index into the globals table */
1674 global_index = -1;
1675 while (entry [0] != 0) {
1676 guint32 index = entry [0] - 1;
1677 guint32 next = entry [1];
1678
1679 //printf ("X: %s %s\n", (char*)globals [index * 2], name);
1680
1681 if (!strcmp (globals [index * 2], symbol)) {
1682 global_index = index;
1683 break;
1684 }
1685
1686 if (next != 0) {
1687 entry = &table [next * 2];
1688 } else {
1689 break;
1690 }
1691 }
1692
1693 if (global_index != -1)
1694 *value = globals [global_index * 2 + 1];
1695 else
1696 *value = NULL;
1697
1698 if (symbol != name)
1699 g_free (symbol);
1700 } else {
1701 char *err = mono_dl_symbol (module, name, value);
1702
1703 if (err)
1704 g_free (err);
1705 }
1706 }
1707
1708 static void
1709 find_amodule_symbol (MonoAotModule *amodule, const char *name, gpointer *value)
1710 {
1711 g_assert (!(amodule->info.flags & MONO_AOT_FILE_FLAG_LLVM_ONLY));
1712
1713 find_symbol (amodule->sofile, amodule->globals, name, value);
1714 }
1715
1716 void
1717 mono_install_load_aot_data_hook (MonoLoadAotDataFunc load_func, MonoFreeAotDataFunc free_func, gpointer user_data)
1718 {
1719 aot_data_load_func = load_func;
1720 aot_data_free_func = free_func;
1721 aot_data_func_user_data = user_data;
1722 }
1723
1724 /* Load the separate aot data file for ASSEMBLY */
1725 static guint8*
1726 open_aot_data (MonoAssembly *assembly, MonoAotFileInfo *info, void **ret_handle)
1727 {
1728 MonoFileMap *map;
1729 char *filename;
1730 guint8 *data;
1731
1732 if (aot_data_load_func) {
1733 data = aot_data_load_func (assembly, info->datafile_size, aot_data_func_user_data, ret_handle);
1734 g_assert (data);
1735 return data;
1736 }
1737
1738 /*
1739 * Use <assembly name>.aotdata as the default implementation if no callback is given
1740 */
1741 filename = g_strdup_printf ("%s.aotdata", assembly->image->name);
1742 map = mono_file_map_open (filename);
1743 g_assert (map);
1744 data = mono_file_map (info->datafile_size, MONO_MMAP_READ, mono_file_map_fd (map), 0, ret_handle);
1745 g_assert (data);
1746
1747 return data;
1748 }
1749
1750 static gboolean
1751 check_usable (MonoAssembly *assembly, MonoAotFileInfo *info, guint8 *blob, char **out_msg)
1752 {
1753 char *build_info;
1754 char *msg = NULL;
1755 gboolean usable = TRUE;
1756 gboolean full_aot, safepoints;
1757 guint32 excluded_cpu_optimizations;
1758
1759 if (strcmp (assembly->image->guid, info->assembly_guid)) {
1760 msg = g_strdup_printf ("doesn't match assembly");
1761 usable = FALSE;
1762 }
1763
1764 build_info = mono_get_runtime_build_info ();
1765 if (strlen ((const char *)info->runtime_version) > 0 && strcmp (info->runtime_version, build_info)) {
1766 msg = g_strdup_printf ("compiled against runtime version '%s' while this runtime has version '%s'", info->runtime_version, build_info);
1767 usable = FALSE;
1768 }
1769 g_free (build_info);
1770
1771 full_aot = info->flags & MONO_AOT_FILE_FLAG_FULL_AOT;
1772
1773 if (mono_aot_only && !full_aot) {
1774 msg = g_strdup_printf ("not compiled with --aot=full");
1775 usable = FALSE;
1776 }
1777 if (!mono_aot_only && full_aot) {
1778 msg = g_strdup_printf ("compiled with --aot=full");
1779 usable = FALSE;
1780 }
1781 if (mono_llvm_only && !(info->flags & MONO_AOT_FILE_FLAG_LLVM_ONLY)) {
1782 msg = g_strdup_printf ("not compiled with --aot=llvmonly");
1783 usable = FALSE;
1784 }
1785 if (mini_get_debug_options ()->mdb_optimizations && !(info->flags & MONO_AOT_FILE_FLAG_DEBUG) && !full_aot) {
1786 msg = g_strdup_printf ("not compiled for debugging");
1787 usable = FALSE;
1788 }
1789
1790 mono_arch_cpu_optimizations (&excluded_cpu_optimizations);
1791 if (info->opts & excluded_cpu_optimizations) {
1792 msg = g_strdup_printf ("compiled with unsupported CPU optimizations");
1793 usable = FALSE;
1794 }
1795
1796 if (!mono_aot_only && (info->simd_opts & ~mono_arch_cpu_enumerate_simd_versions ())) {
1797 msg = g_strdup_printf ("compiled with unsupported SIMD extensions");
1798 usable = FALSE;
1799 }
1800
1801 if (info->gc_name_index != -1) {
1802 char *gc_name = (char*)&blob [info->gc_name_index];
1803 const char *current_gc_name = mono_gc_get_gc_name ();
1804
1805 if (strcmp (current_gc_name, gc_name) != 0) {
1806 msg = g_strdup_printf ("compiled against GC %s, while the current runtime uses GC %s.\n", gc_name, current_gc_name);
1807 usable = FALSE;
1808 }
1809 }
1810
1811 safepoints = info->flags & MONO_AOT_FILE_FLAG_SAFEPOINTS;
1812
1813 if (!safepoints && mono_threads_is_coop_enabled ()) {
1814 msg = g_strdup_printf ("not compiled with safepoints");
1815 usable = FALSE;
1816 }
1817
1818 *out_msg = msg;
1819 return usable;
1820 }
1821
1822 /*
1823 * TABLE should point to a table of call instructions. Return the address called by the INDEXth entry.
1824 */
1825 static void*
1826 get_call_table_entry (void *table, int index)
1827 {
1828 #if defined(TARGET_ARM)
1829 guint32 *ins_addr;
1830 guint32 ins;
1831 gint32 offset;
1832
1833 ins_addr = (guint32*)table + index;
1834 ins = *ins_addr;
1835 if ((ins >> ARMCOND_SHIFT) == ARMCOND_NV) {
1836 /* blx */
1837 offset = (((int)(((ins & 0xffffff) << 1) | ((ins >> 24) & 0x1))) << 7) >> 7;
1838 return (char*)ins_addr + (offset * 2) + 8 + 1;
1839 } else {
1840 offset = (((int)ins & 0xffffff) << 8) >> 8;
1841 return (char*)ins_addr + (offset * 4) + 8;
1842 }
1843 #elif defined(TARGET_ARM64)
1844 return mono_arch_get_call_target ((guint8*)table + (index * 4) + 4);
1845 #elif defined(TARGET_X86) || defined(TARGET_AMD64)
1846 /* The callee expects an ip which points after the call */
1847 return mono_arch_get_call_target ((guint8*)table + (index * 5) + 5);
1848 #else
1849 g_assert_not_reached ();
1850 return NULL;
1851 #endif
1852 }
1853
1854 /*
1855 * init_amodule_got:
1856 *
1857 * Initialize the shared got entries for AMODULE.
1858 */
1859 static void
1860 init_amodule_got (MonoAotModule *amodule)
1861 {
1862 MonoJumpInfo *ji;
1863 MonoMemPool *mp;
1864 MonoJumpInfo *patches;
1865 guint32 got_offsets [128];
1866 MonoError error;
1867 int i, npatches;
1868
1869 /* These can't be initialized in load_aot_module () */
1870 if (amodule->shared_got [0] || amodule->got_initializing)
1871 return;
1872
1873 amodule->got_initializing = TRUE;
1874
1875 mp = mono_mempool_new ();
1876 npatches = amodule->info.nshared_got_entries;
1877 for (i = 0; i < npatches; ++i)
1878 got_offsets [i] = i;
1879 patches = decode_patches (amodule, mp, npatches, FALSE, got_offsets);
1880 g_assert (patches);
1881 for (i = 0; i < npatches; ++i) {
1882 ji = &patches [i];
1883
1884 if (ji->type == MONO_PATCH_INFO_GC_CARD_TABLE_ADDR && !mono_gc_is_moving ()) {
1885 amodule->shared_got [i] = NULL;
1886 } else if (ji->type == MONO_PATCH_INFO_GC_NURSERY_START && !mono_gc_is_moving ()) {
1887 amodule->shared_got [i] = NULL;
1888 } else if (ji->type == MONO_PATCH_INFO_GC_NURSERY_BITS && !mono_gc_is_moving ()) {
1889 amodule->shared_got [i] = NULL;
1890 } else if (ji->type == MONO_PATCH_INFO_IMAGE) {
1891 amodule->shared_got [i] = amodule->assembly->image;
1892 } else if (ji->type == MONO_PATCH_INFO_MSCORLIB_GOT_ADDR) {
1893 if (mono_defaults.corlib) {
1894 MonoAotModule *mscorlib_amodule = (MonoAotModule *)mono_defaults.corlib->aot_module;
1895
1896 if (mscorlib_amodule)
1897 amodule->shared_got [i] = mscorlib_amodule->got;
1898 } else {
1899 amodule->shared_got [i] = amodule->got;
1900 }
1901 } else if (ji->type == MONO_PATCH_INFO_AOT_MODULE) {
1902 amodule->shared_got [i] = amodule;
1903 } else {
1904 amodule->shared_got [i] = mono_resolve_patch_target (NULL, mono_get_root_domain (), NULL, ji, FALSE, &error);
1905 mono_error_assert_ok (&error);
1906 }
1907 }
1908
1909 if (amodule->got) {
1910 for (i = 0; i < npatches; ++i)
1911 amodule->got [i] = amodule->shared_got [i];
1912 }
1913 if (amodule->llvm_got) {
1914 for (i = 0; i < npatches; ++i)
1915 amodule->llvm_got [i] = amodule->shared_got [i];
1916 }
1917
1918 mono_mempool_destroy (mp);
1919 }
1920
1921 static void
1922 load_aot_module (MonoAssembly *assembly, gpointer user_data)
1923 {
1924 char *aot_name;
1925 MonoAotModule *amodule;
1926 MonoDl *sofile;
1927 gboolean usable = TRUE;
1928 char *version_symbol = NULL;
1929 char *msg = NULL;
1930 gpointer *globals = NULL;
1931 MonoAotFileInfo *info = NULL;
1932 int i, version;
1933 gboolean do_load_image = TRUE;
1934 int align_double, align_int64;
1935 guint8 *aot_data = NULL;
1936
1937 if (mono_compile_aot)
1938 return;
1939
1940 if (assembly->image->aot_module)
1941 /*
1942 * Already loaded. This can happen because the assembly loading code might invoke
1943 * the assembly load hooks multiple times for the same assembly.
1944 */
1945 return;
1946
1947 if (image_is_dynamic (assembly->image) || assembly->ref_only)
1948 return;
1949
1950 mono_aot_lock ();
1951 if (static_aot_modules)
1952 info = (MonoAotFileInfo *)g_hash_table_lookup (static_aot_modules, assembly->aname.name);
1953 else
1954 info = NULL;
1955 mono_aot_unlock ();
1956
1957 sofile = NULL;
1958
1959 if (info) {
1960 /* Statically linked AOT module */
1961 aot_name = g_strdup_printf ("%s", assembly->aname.name);
1962 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "Found statically linked AOT module '%s'.", aot_name);
1963 if (!(info->flags & MONO_AOT_FILE_FLAG_LLVM_ONLY)) {
1964 globals = (void **)info->globals;
1965 g_assert (globals);
1966 }
1967 } else {
1968 if (enable_aot_cache)
1969 sofile = aot_cache_load_module (assembly, &aot_name);
1970 if (!sofile) {
1971 char *err;
1972 aot_name = g_strdup_printf ("%s%s", assembly->image->name, MONO_SOLIB_EXT);
1973
1974 sofile = mono_dl_open (aot_name, MONO_DL_LAZY, &err);
1975
1976 if (!sofile) {
1977 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module '%s' not found: %s", aot_name, err);
1978 g_free (err);
1979
1980 g_free (aot_name);
1981 char *basename = g_path_get_basename (assembly->image->name);
1982 aot_name = g_strdup_printf ("%s/mono/aot-cache/%s/%s%s", mono_assembly_getrootdir(), MONO_ARCHITECTURE, basename, MONO_SOLIB_EXT);
1983 g_free (basename);
1984 sofile = mono_dl_open (aot_name, MONO_DL_LAZY, &err);
1985 if (!sofile) {
1986 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module '%s' not found: %s", aot_name, err);
1987 g_free (err);
1988 }
1989
1990 }
1991 }
1992 if (!sofile) {
1993 if (mono_aot_only && assembly->image->tables [MONO_TABLE_METHOD].rows)
1994 g_error ("Failed to load AOT module '%s' in aot-only mode.\n", aot_name);
1995 g_free (aot_name);
1996 return;
1997 }
1998 }
1999
2000 if (!info) {
2001 find_symbol (sofile, globals, "mono_aot_version", (gpointer *) &version_symbol);
2002 find_symbol (sofile, globals, "mono_aot_file_info", (gpointer*)&info);
2003 }
2004
2005 // Copy aotid to MonoImage
2006 memcpy(&assembly->image->aotid, info->aotid, 16);
2007
2008 if (version_symbol) {
2009 /* Old file format */
2010 version = atoi (version_symbol);
2011 } else {
2012 g_assert (info);
2013 version = info->version;
2014 }
2015
2016 if (version != MONO_AOT_FILE_VERSION) {
2017 msg = g_strdup_printf ("wrong file format version (expected %d got %d)", MONO_AOT_FILE_VERSION, version);
2018 usable = FALSE;
2019 } else {
2020 guint8 *blob;
2021 void *handle;
2022
2023 if (info->flags & MONO_AOT_FILE_FLAG_SEPARATE_DATA) {
2024 aot_data = open_aot_data (assembly, info, &handle);
2025
2026 blob = aot_data + info->table_offsets [MONO_AOT_TABLE_BLOB];
2027 } else {
2028 blob = (guint8 *)info->blob;
2029 }
2030
2031 usable = check_usable (assembly, info, blob, &msg);
2032 }
2033
2034 if (!usable) {
2035 if (mono_aot_only) {
2036 g_error ("Failed to load AOT module '%s' while running in aot-only mode: %s.\n", aot_name, msg);
2037 } else {
2038 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: module %s is unusable: %s.", aot_name, msg);
2039 }
2040 g_free (msg);
2041 g_free (aot_name);
2042 if (sofile)
2043 mono_dl_close (sofile);
2044 assembly->image->aot_module = NULL;
2045 return;
2046 }
2047
2048 /* Sanity check */
2049 align_double = MONO_ABI_ALIGNOF (double);
2050 align_int64 = MONO_ABI_ALIGNOF (gint64);
2051 g_assert (info->double_align == align_double);
2052 g_assert (info->long_align == align_int64);
2053 g_assert (info->generic_tramp_num == MONO_TRAMPOLINE_NUM);
2054
2055 amodule = g_new0 (MonoAotModule, 1);
2056 amodule->aot_name = aot_name;
2057 amodule->assembly = assembly;
2058
2059 memcpy (&amodule->info, info, sizeof (*info));
2060
2061 amodule->got = (void **)amodule->info.jit_got;
2062 amodule->llvm_got = (void **)amodule->info.llvm_got;
2063 amodule->globals = globals;
2064 amodule->sofile = sofile;
2065 amodule->method_to_code = g_hash_table_new (mono_aligned_addr_hash, NULL);
2066 amodule->extra_methods = g_hash_table_new (NULL, NULL);
2067 amodule->shared_got = g_new0 (gpointer, info->nshared_got_entries);
2068
2069 if (info->flags & MONO_AOT_FILE_FLAG_SEPARATE_DATA) {
2070 for (i = 0; i < MONO_AOT_TABLE_NUM; ++i)
2071 amodule->tables [i] = aot_data + info->table_offsets [i];
2072 }
2073
2074 mono_os_mutex_init_recursive (&amodule->mutex);
2075
2076 /* Read image table */
2077 {
2078 guint32 table_len, i;
2079 char *table = NULL;
2080
2081 if (info->flags & MONO_AOT_FILE_FLAG_SEPARATE_DATA)
2082 table = amodule->tables [MONO_AOT_TABLE_IMAGE_TABLE];
2083 else
2084 table = (char *)info->image_table;
2085 g_assert (table);
2086
2087 table_len = *(guint32*)table;
2088 table += sizeof (guint32);
2089 amodule->image_table = g_new0 (MonoImage*, table_len);
2090 amodule->image_names = g_new0 (MonoAssemblyName, table_len);
2091 amodule->image_guids = g_new0 (char*, table_len);
2092 amodule->image_table_len = table_len;
2093 for (i = 0; i < table_len; ++i) {
2094 MonoAssemblyName *aname = &(amodule->image_names [i]);
2095
2096 aname->name = g_strdup (table);
2097 table += strlen (table) + 1;
2098 amodule->image_guids [i] = g_strdup (table);
2099 table += strlen (table) + 1;
2100 if (table [0] != 0)
2101 aname->culture = g_strdup (table);
2102 table += strlen (table) + 1;
2103 memcpy (aname->public_key_token, table, strlen (table) + 1);
2104 table += strlen (table) + 1;
2105
2106 table = (char *)ALIGN_PTR_TO (table, 8);
2107 aname->flags = *(guint32*)table;
2108 table += 4;
2109 aname->major = *(guint32*)table;
2110 table += 4;
2111 aname->minor = *(guint32*)table;
2112 table += 4;
2113 aname->build = *(guint32*)table;
2114 table += 4;
2115 aname->revision = *(guint32*)table;
2116 table += 4;
2117 }
2118 }
2119
2120 amodule->jit_code_start = (guint8 *)info->jit_code_start;
2121 amodule->jit_code_end = (guint8 *)info->jit_code_end;
2122 if (info->flags & MONO_AOT_FILE_FLAG_SEPARATE_DATA) {
2123 amodule->blob = amodule->tables [MONO_AOT_TABLE_BLOB];
2124 amodule->method_info_offsets = amodule->tables [MONO_AOT_TABLE_METHOD_INFO_OFFSETS];
2125 amodule->ex_info_offsets = amodule->tables [MONO_AOT_TABLE_EX_INFO_OFFSETS];
2126 amodule->class_info_offsets = amodule->tables [MONO_AOT_TABLE_CLASS_INFO_OFFSETS];
2127 amodule->class_name_table = amodule->tables [MONO_AOT_TABLE_CLASS_NAME];
2128 amodule->extra_method_table = amodule->tables [MONO_AOT_TABLE_EXTRA_METHOD_TABLE];
2129 amodule->extra_method_info_offsets = amodule->tables [MONO_AOT_TABLE_EXTRA_METHOD_INFO_OFFSETS];
2130 amodule->got_info_offsets = amodule->tables [MONO_AOT_TABLE_GOT_INFO_OFFSETS];
2131 amodule->llvm_got_info_offsets = amodule->tables [MONO_AOT_TABLE_LLVM_GOT_INFO_OFFSETS];
2132 } else {
2133 amodule->blob = info->blob;
2134 amodule->method_info_offsets = (guint32 *)info->method_info_offsets;
2135 amodule->ex_info_offsets = (guint32 *)info->ex_info_offsets;
2136 amodule->class_info_offsets = (guint32 *)info->class_info_offsets;
2137 amodule->class_name_table = (guint16 *)info->class_name_table;
2138 amodule->extra_method_table = (guint32 *)info->extra_method_table;
2139 amodule->extra_method_info_offsets = (guint32 *)info->extra_method_info_offsets;
2140 amodule->got_info_offsets = info->got_info_offsets;
2141 amodule->llvm_got_info_offsets = info->llvm_got_info_offsets;
2142 }
2143 amodule->unbox_trampolines = (guint32 *)info->unbox_trampolines;
2144 amodule->unbox_trampolines_end = (guint32 *)info->unbox_trampolines_end;
2145 amodule->unbox_trampoline_addresses = (guint32 *)info->unbox_trampoline_addresses;
2146 amodule->unwind_info = (guint8 *)info->unwind_info;
2147 amodule->mem_begin = amodule->jit_code_start;
2148 amodule->mem_end = (guint8 *)info->mem_end;
2149 amodule->plt = (guint8 *)info->plt;
2150 amodule->plt_end = (guint8 *)info->plt_end;
2151 amodule->mono_eh_frame = (guint8 *)info->mono_eh_frame;
2152 amodule->trampolines [MONO_AOT_TRAMP_SPECIFIC] = (guint8 *)info->specific_trampolines;
2153 amodule->trampolines [MONO_AOT_TRAMP_STATIC_RGCTX] = (guint8 *)info->static_rgctx_trampolines;
2154 amodule->trampolines [MONO_AOT_TRAMP_IMT] = (guint8 *)info->imt_trampolines;
2155 amodule->trampolines [MONO_AOT_TRAMP_GSHAREDVT_ARG] = (guint8 *)info->gsharedvt_arg_trampolines;
2156
2157 if (!strcmp (assembly->aname.name, "mscorlib"))
2158 mscorlib_aot_module = amodule;
2159
2160 /* Compute method addresses */
2161 amodule->methods = (void **)g_malloc0 (amodule->info.nmethods * sizeof (gpointer));
2162 for (i = 0; i < amodule->info.nmethods; ++i) {
2163 void *addr = NULL;
2164
2165 if (amodule->info.llvm_get_method) {
2166 gpointer (*get_method) (int) = (gpointer (*)(int))amodule->info.llvm_get_method;
2167
2168 addr = get_method (i);
2169 }
2170
2171 /* method_addresses () contains a table of branches, since the ios linker can update those correctly */
2172 if (!addr && amodule->info.method_addresses) {
2173 addr = get_call_table_entry (amodule->info.method_addresses, i);
2174 g_assert (addr);
2175 if (addr == amodule->info.method_addresses)
2176 addr = NULL;
2177 }
2178 if (addr == NULL)
2179 amodule->methods [i] = GINT_TO_POINTER (-1);
2180 else
2181 amodule->methods [i] = addr;
2182 }
2183
2184 if (make_unreadable) {
2185 #ifndef TARGET_WIN32
2186 guint8 *addr;
2187 guint8 *page_start, *page_end;
2188 int err, len;
2189
2190 addr = amodule->mem_begin;
2191 g_assert (addr);
2192 len = amodule->mem_end - amodule->mem_begin;
2193
2194 /* Round down in both directions to avoid modifying data which is not ours */
2195 page_start = (guint8 *) (((gssize) (addr)) & ~ (mono_pagesize () - 1)) + mono_pagesize ();
2196 page_end = (guint8 *) (((gssize) (addr + len)) & ~ (mono_pagesize () - 1));
2197 if (page_end > page_start) {
2198 err = mono_mprotect (page_start, (page_end - page_start), MONO_MMAP_NONE);
2199 g_assert (err == 0);
2200 }
2201 #endif
2202 }
2203
2204 /* Compute the boundaries of LLVM code */
2205 if (info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM)
2206 compute_llvm_code_range (amodule, &amodule->llvm_code_start, &amodule->llvm_code_end);
2207
2208 mono_aot_lock ();
2209
2210 if (amodule->jit_code_start) {
2211 aot_code_low_addr = MIN (aot_code_low_addr, (gsize)amodule->jit_code_start);
2212 aot_code_high_addr = MAX (aot_code_high_addr, (gsize)amodule->jit_code_end);
2213 }
2214 if (amodule->llvm_code_start) {
2215 aot_code_low_addr = MIN (aot_code_low_addr, (gsize)amodule->llvm_code_start);
2216 aot_code_high_addr = MAX (aot_code_high_addr, (gsize)amodule->llvm_code_end);
2217 }
2218
2219 g_hash_table_insert (aot_modules, assembly, amodule);
2220 mono_aot_unlock ();
2221
2222 if (amodule->jit_code_start)
2223 mono_jit_info_add_aot_module (assembly->image, amodule->jit_code_start, amodule->jit_code_end);
2224 if (amodule->llvm_code_start)
2225 mono_jit_info_add_aot_module (assembly->image, amodule->llvm_code_start, amodule->llvm_code_end);
2226
2227 assembly->image->aot_module = amodule;
2228
2229 if (mono_aot_only && !mono_llvm_only) {
2230 char *code;
2231 find_amodule_symbol (amodule, "specific_trampolines_page", (gpointer *)&code);
2232 amodule->use_page_trampolines = code != NULL;
2233 /*g_warning ("using page trampolines: %d", amodule->use_page_trampolines);*/
2234 }
2235
2236 /*
2237 * Register the plt region as a single trampoline so we can unwind from this code
2238 */
2239 mono_tramp_info_register (
2240 mono_tramp_info_create (
2241 NULL,
2242 amodule->plt,
2243 amodule->plt_end - amodule->plt,
2244 NULL,
2245 mono_unwind_get_cie_program ()
2246 ),
2247 NULL
2248 );
2249
2250 /*
2251 * Since we store methoddef and classdef tokens when referring to methods/classes in
2252 * referenced assemblies, we depend on the exact versions of the referenced assemblies.
2253 * MS calls this 'hard binding'. This means we have to load all referenced assemblies
2254 * non-lazily, since we can't handle out-of-date errors later.
2255 * The cached class info also depends on the exact assemblies.
2256 */
2257 #if defined(__native_client__)
2258 /* TODO: Don't 'load_image' on mscorlib due to a */
2259 /* recursive loading problem. This should be */
2260 /* removed if mscorlib is loaded from disk. */
2261 if (strncmp(assembly->aname.name, "mscorlib", 8)) {
2262 do_load_image = TRUE;
2263 } else {
2264 do_load_image = FALSE;
2265 }
2266 #endif
2267 if (do_load_image) {
2268 for (i = 0; i < amodule->image_table_len; ++i) {
2269 MonoError error;
2270 load_image (amodule, i, &error);
2271 mono_error_cleanup (&error); /* FIXME don't swallow the error */
2272 }
2273 }
2274
2275 if (amodule->out_of_date) {
2276 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: Module %s is unusable because a dependency is out-of-date.", assembly->image->name);
2277 if (mono_aot_only)
2278 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);
2279 }
2280 else
2281 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: loaded AOT Module for %s.", assembly->image->name);
2282 }
2283
2284 /*
2285 * mono_aot_register_module:
2286 *
2287 * This should be called by embedding code to register AOT modules statically linked
2288 * into the executable. AOT_INFO should be the value of the
2289 * 'mono_aot_module_<ASSEMBLY_NAME>_info' global symbol from the AOT module.
2290 */
2291 void
2292 mono_aot_register_module (gpointer *aot_info)
2293 {
2294 gpointer *globals;
2295 char *aname;
2296 MonoAotFileInfo *info = (MonoAotFileInfo *)aot_info;
2297
2298 g_assert (info->version == MONO_AOT_FILE_VERSION);
2299
2300 if (!(info->flags & MONO_AOT_FILE_FLAG_LLVM_ONLY)) {
2301 globals = (void **)info->globals;
2302 g_assert (globals);
2303 }
2304
2305 aname = (char *)info->assembly_name;
2306
2307 /* This could be called before startup */
2308 if (aot_modules)
2309 mono_aot_lock ();
2310
2311 if (!static_aot_modules)
2312 static_aot_modules = g_hash_table_new (g_str_hash, g_str_equal);
2313
2314 g_hash_table_insert (static_aot_modules, aname, info);
2315
2316 if (aot_modules)
2317 mono_aot_unlock ();
2318 }
2319
2320 void
2321 mono_aot_init (void)
2322 {
2323 mono_os_mutex_init_recursive (&aot_mutex);
2324 mono_os_mutex_init_recursive (&aot_page_mutex);
2325 aot_modules = g_hash_table_new (NULL, NULL);
2326
2327 #ifndef __native_client__
2328 mono_install_assembly_load_hook (load_aot_module, NULL);
2329 #endif
2330 mono_counters_register ("Async JIT info size", MONO_COUNTER_INT|MONO_COUNTER_JIT, &async_jit_info_size);
2331
2332 if (g_getenv ("MONO_LASTAOT"))
2333 mono_last_aot_method = atoi (g_getenv ("MONO_LASTAOT"));
2334 aot_cache_init ();
2335 }
2336
2337 void
2338 mono_aot_cleanup (void)
2339 {
2340 if (aot_jit_icall_hash)
2341 g_hash_table_destroy (aot_jit_icall_hash);
2342 if (aot_modules)
2343 g_hash_table_destroy (aot_modules);
2344 }
2345
2346 static gboolean
2347 decode_cached_class_info (MonoAotModule *module, MonoCachedClassInfo *info, guint8 *buf, guint8 **endbuf)
2348 {
2349 MonoError error;
2350 guint32 flags;
2351 MethodRef ref;
2352 gboolean res;
2353
2354 info->vtable_size = decode_value (buf, &buf);
2355 if (info->vtable_size == -1)
2356 /* Generic type */
2357 return FALSE;
2358 flags = decode_value (buf, &buf);
2359 info->ghcimpl = (flags >> 0) & 0x1;
2360 info->has_finalize = (flags >> 1) & 0x1;
2361 info->has_cctor = (flags >> 2) & 0x1;
2362 info->has_nested_classes = (flags >> 3) & 0x1;
2363 info->blittable = (flags >> 4) & 0x1;
2364 info->has_references = (flags >> 5) & 0x1;
2365 info->has_static_refs = (flags >> 6) & 0x1;
2366 info->no_special_static_fields = (flags >> 7) & 0x1;
2367 info->is_generic_container = (flags >> 8) & 0x1;
2368
2369 if (info->has_cctor) {
2370 res = decode_method_ref (module, &ref, buf, &buf, &error);
2371 mono_error_assert_ok (&error); /* FIXME don't swallow the error */
2372 if (!res)
2373 return FALSE;
2374 info->cctor_token = ref.token;
2375 }
2376 if (info->has_finalize) {
2377 res = decode_method_ref (module, &ref, buf, &buf, &error);
2378 mono_error_assert_ok (&error); /* FIXME don't swallow the error */
2379 if (!res)
2380 return FALSE;
2381 info->finalize_image = ref.image;
2382 info->finalize_token = ref.token;
2383 }
2384
2385 info->instance_size = decode_value (buf, &buf);
2386 info->class_size = decode_value (buf, &buf);
2387 info->packing_size = decode_value (buf, &buf);
2388 info->min_align = decode_value (buf, &buf);
2389
2390 *endbuf = buf;
2391
2392 return TRUE;
2393 }
2394
2395 gpointer
2396 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot, MonoError *error)
2397 {
2398 int i;
2399 MonoClass *klass = vtable->klass;
2400 MonoAotModule *amodule = (MonoAotModule *)klass->image->aot_module;
2401 guint8 *info, *p;
2402 MonoCachedClassInfo class_info;
2403 gboolean err;
2404 MethodRef ref;
2405 gboolean res;
2406 gpointer addr;
2407 MonoError inner_error;
2408
2409 mono_error_init (error);
2410
2411 if (MONO_CLASS_IS_INTERFACE (klass) || klass->rank || !amodule)
2412 return NULL;
2413
2414 info = &amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
2415 p = info;
2416
2417 err = decode_cached_class_info (amodule, &class_info, p, &p);
2418 if (!err)
2419 return NULL;
2420
2421 for (i = 0; i < slot; ++i) {
2422 decode_method_ref (amodule, &ref, p, &p, &inner_error);
2423 mono_error_cleanup (&inner_error); /* FIXME don't swallow the error */
2424 }
2425
2426 res = decode_method_ref (amodule, &ref, p, &p, &inner_error);
2427 mono_error_cleanup (&inner_error); /* FIXME don't swallow the error */
2428 if (!res)
2429 return NULL;
2430 if (ref.no_aot_trampoline)
2431 return NULL;
2432
2433 if (mono_metadata_token_index (ref.token) == 0 || mono_metadata_token_table (ref.token) != MONO_TABLE_METHOD)
2434 return NULL;
2435
2436 addr = mono_aot_get_method_from_token (domain, ref.image, ref.token, error);
2437 return addr;
2438 }
2439
2440 gboolean
2441 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
2442 {
2443 MonoAotModule *amodule = (MonoAotModule *)klass->image->aot_module;
2444 guint8 *p;
2445 gboolean err;
2446
2447 if (klass->rank || !klass->type_token || !amodule)
2448 return FALSE;
2449
2450 p = (guint8*)&amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
2451
2452 err = decode_cached_class_info (amodule, res, p, &p);
2453 if (!err)
2454 return FALSE;
2455
2456 return TRUE;
2457 }
2458
2459 /**
2460 * mono_aot_get_class_from_name:
2461 *
2462 * Obtains a MonoClass with a given namespace and a given name which is located in IMAGE,
2463 * using a cache stored in the AOT file.
2464 * Stores the resulting class in *KLASS if found, stores NULL otherwise.
2465 *
2466 * Returns: TRUE if the klass was found/not found in the cache, FALSE if no aot file was
2467 * found.
2468 */
2469 gboolean
2470 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
2471 {
2472 MonoAotModule *amodule = (MonoAotModule *)image->aot_module;
2473 guint16 *table, *entry;
2474 guint16 table_size;
2475 guint32 hash;
2476 char full_name_buf [1024];
2477 char *full_name;
2478 const char *name2, *name_space2;
2479 MonoTableInfo *t;
2480 guint32 cols [MONO_TYPEDEF_SIZE];
2481 GHashTable *nspace_table;
2482
2483 if (!amodule || !amodule->class_name_table)
2484 return FALSE;
2485
2486 amodule_lock (amodule);
2487
2488 *klass = NULL;
2489
2490 /* First look in the cache */
2491 if (!amodule->name_cache)
2492 amodule->name_cache = g_hash_table_new (g_str_hash, g_str_equal);
2493 nspace_table = (GHashTable *)g_hash_table_lookup (amodule->name_cache, name_space);
2494 if (nspace_table) {
2495 *klass = (MonoClass *)g_hash_table_lookup (nspace_table, name);
2496 if (*klass) {
2497 amodule_unlock (amodule);
2498 return TRUE;
2499 }
2500 }
2501
2502 table_size = amodule->class_name_table [0];
2503 table = amodule->class_name_table + 1;
2504
2505 if (name_space [0] == '\0')
2506 full_name = g_strdup_printf ("%s", name);
2507 else {
2508 if (strlen (name_space) + strlen (name) < 1000) {
2509 sprintf (full_name_buf, "%s.%s", name_space, name);
2510 full_name = full_name_buf;
2511 } else {
2512 full_name = g_strdup_printf ("%s.%s", name_space, name);
2513 }
2514 }
2515 hash = mono_metadata_str_hash (full_name) % table_size;
2516 if (full_name != full_name_buf)
2517 g_free (full_name);
2518
2519 entry = &table [hash * 2];
2520
2521 if (entry [0] != 0) {
2522 t = &image->tables [MONO_TABLE_TYPEDEF];
2523
2524 while (TRUE) {
2525 guint32 index = entry [0];
2526 guint32 next = entry [1];
2527 guint32 token = mono_metadata_make_token (MONO_TABLE_TYPEDEF, index);
2528
2529 name_table_accesses ++;
2530
2531 mono_metadata_decode_row (t, index - 1, cols, MONO_TYPEDEF_SIZE);
2532
2533 name2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
2534 name_space2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
2535
2536 if (!strcmp (name, name2) && !strcmp (name_space, name_space2)) {
2537 MonoError error;
2538 amodule_unlock (amodule);
2539 *klass = mono_class_get_checked (image, token, &error);
2540 if (!mono_error_ok (&error))
2541 mono_error_cleanup (&error); /* FIXME don't swallow the error */
2542
2543 /* Add to cache */
2544 if (*klass) {
2545 amodule_lock (amodule);
2546 nspace_table = (GHashTable *)g_hash_table_lookup (amodule->name_cache, name_space);
2547 if (!nspace_table) {
2548 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
2549 g_hash_table_insert (amodule->name_cache, (char*)name_space2, nspace_table);
2550 }
2551 g_hash_table_insert (nspace_table, (char*)name2, *klass);
2552 amodule_unlock (amodule);
2553 }
2554 return TRUE;
2555 }
2556
2557 if (next != 0) {
2558 entry = &table [next * 2];
2559 } else {
2560 break;
2561 }
2562 }
2563 }
2564
2565 amodule_unlock (amodule);
2566
2567 return TRUE;
2568 }
2569
2570 /* Compute the boundaries of the LLVM code for AMODULE. */
2571 static void
2572 compute_llvm_code_range (MonoAotModule *amodule, guint8 **code_start, guint8 **code_end)
2573 {
2574 guint8 *p;
2575 int version, fde_count;
2576 gint32 *table;
2577
2578 if (amodule->info.llvm_get_method) {
2579 gpointer (*get_method) (int) = (gpointer (*)(int))amodule->info.llvm_get_method;
2580
2581 *code_start = (guint8 *)get_method (-1);
2582 *code_end = (guint8 *)get_method (-2);
2583
2584 g_assert (*code_end > *code_start);
2585 return;
2586 }
2587
2588 g_assert (amodule->mono_eh_frame);
2589
2590 p = amodule->mono_eh_frame;
2591
2592 /* p points to data emitted by LLVM in DwarfException::EmitMonoEHFrame () */
2593
2594 /* Header */
2595 version = *p;
2596 g_assert (version == 3);
2597 p ++;
2598 p ++;
2599 p = (guint8 *)ALIGN_PTR_TO (p, 4);
2600
2601 fde_count = *(guint32*)p;
2602 p += 4;
2603 table = (gint32*)p;
2604
2605 if (fde_count > 0) {
2606 *code_start = (guint8 *)amodule->methods [table [0]];
2607 *code_end = (guint8*)amodule->methods [table [(fde_count - 1) * 2]] + table [fde_count * 2];
2608 } else {
2609 *code_start = NULL;
2610 *code_end = NULL;
2611 }
2612 }
2613
2614 static gboolean
2615 is_llvm_code (MonoAotModule *amodule, guint8 *code)
2616 {
2617 if ((guint8*)code >= amodule->llvm_code_start && (guint8*)code < amodule->llvm_code_end)
2618 return TRUE;
2619 else
2620 return FALSE;
2621 }
2622
2623 static gboolean
2624 is_thumb_code (MonoAotModule *amodule, guint8 *code)
2625 {
2626 if (is_llvm_code (amodule, code) && (amodule->info.flags & MONO_AOT_FILE_FLAG_LLVM_THUMB))
2627 return TRUE;
2628 else
2629 return FALSE;
2630 }
2631
2632 /*
2633 * decode_llvm_mono_eh_frame:
2634 *
2635 * Decode the EH information emitted by our modified LLVM compiler and construct a
2636 * MonoJitInfo structure from it.
2637 * LOCKING: Acquires the domain lock.
2638 */
2639 static MonoJitInfo*
2640 decode_llvm_mono_eh_frame (MonoAotModule *amodule, MonoDomain *domain,
2641 MonoMethod *method, guint8 *code, guint32 code_len,
2642 MonoJitExceptionInfo *clauses, int num_clauses,
2643 MonoJitInfoFlags flags,
2644 GSList **nesting,
2645 int *this_reg, int *this_offset)
2646 {
2647 guint8 *p, *code1, *code2;
2648 guint8 *fde, *cie, *code_start, *code_end;
2649 int version, fde_count;
2650 gint32 *table;
2651 int i, pos, left, right;
2652 MonoJitExceptionInfo *ei;
2653 guint32 fde_len, ei_len, nested_len, nindex;
2654 gpointer *type_info;
2655 MonoJitInfo *jinfo;
2656 MonoLLVMFDEInfo info;
2657
2658 if (!amodule->mono_eh_frame) {
2659 jinfo = (MonoJitInfo *)mono_domain_alloc0_lock_free (domain, mono_jit_info_size (flags, num_clauses, 0));
2660 mono_jit_info_init (jinfo, method, code, code_len, flags, num_clauses, 0);
2661 memcpy (jinfo->clauses, clauses, num_clauses * sizeof (MonoJitExceptionInfo));
2662 return jinfo;
2663 }
2664
2665 g_assert (amodule->mono_eh_frame && code);
2666
2667 p = amodule->mono_eh_frame;
2668
2669 /* p points to data emitted by LLVM in DwarfMonoException::EmitMonoEHFrame () */
2670
2671 /* Header */
2672 version = *p;
2673 g_assert (version == 3);
2674 p ++;
2675 /* func_encoding = *p; */
2676 p ++;
2677 p = (guint8 *)ALIGN_PTR_TO (p, 4);
2678
2679 fde_count = *(guint32*)p;
2680 p += 4;
2681 table = (gint32*)p;
2682
2683 /* There is +1 entry in the table */
2684 cie = p + ((fde_count + 1) * 8);
2685
2686 /* Binary search in the table to find the entry for code */
2687 left = 0;
2688 right = fde_count;
2689 while (TRUE) {
2690 pos = (left + right) / 2;
2691
2692 /* The table contains method index/fde offset pairs */
2693 g_assert (table [(pos * 2)] != -1);
2694 code1 = (guint8 *)amodule->methods [table [(pos * 2)]];
2695 if (pos + 1 == fde_count) {
2696 code2 = amodule->llvm_code_end;
2697 } else {
2698 g_assert (table [(pos + 1) * 2] != -1);
2699 code2 = (guint8 *)amodule->methods [table [(pos + 1) * 2]];
2700 }
2701
2702 if (code < code1)
2703 right = pos;
2704 else if (code >= code2)
2705 left = pos + 1;
2706 else
2707 break;
2708 }
2709
2710 code_start = (guint8 *)amodule->methods [table [(pos * 2)]];
2711 if (pos + 1 == fde_count) {
2712 /* The +1 entry in the table contains the length of the last method */
2713 int len = table [(pos + 1) * 2];
2714 code_end = code_start + len;
2715 } else {
2716 code_end = (guint8 *)amodule->methods [table [(pos + 1) * 2]];
2717 }
2718 if (!code_len)
2719 code_len = code_end - code_start;
2720
2721 g_assert (code >= code_start && code < code_end);
2722
2723 if (is_thumb_code (amodule, code_start))
2724 /* Clear thumb flag */
2725 code_start = (guint8*)(((mgreg_t)code_start) & ~1);
2726
2727 fde = amodule->mono_eh_frame + table [(pos * 2) + 1];
2728 /* This won't overflow because there is +1 entry in the table */
2729 fde_len = table [(pos * 2) + 2 + 1] - table [(pos * 2) + 1];
2730
2731 mono_unwind_decode_llvm_mono_fde (fde, fde_len, cie, code_start, &info);
2732 ei = info.ex_info;
2733 ei_len = info.ex_info_len;
2734 type_info = info.type_info;
2735 *this_reg = info.this_reg;
2736 *this_offset = info.this_offset;
2737
2738 /* Count number of nested clauses */
2739 nested_len = 0;
2740 for (i = 0; i < ei_len; ++i) {
2741 /* This might be unaligned */
2742 gint32 cindex1 = read32 (type_info [i]);
2743 GSList *l;
2744
2745 for (l = nesting [cindex1]; l; l = l->next)
2746 nested_len ++;
2747 }
2748
2749 /*
2750 * LLVM might represent one IL region with multiple regions, so have to
2751 * allocate a new JI.
2752 */
2753 jinfo =
2754 (MonoJitInfo *)mono_domain_alloc0_lock_free (domain, mono_jit_info_size (flags, ei_len + nested_len, 0));
2755 mono_jit_info_init (jinfo, method, code, code_len, flags, ei_len + nested_len, 0);
2756
2757 jinfo->unwind_info = mono_cache_unwind_info (info.unw_info, info.unw_info_len);
2758 /* This signals that unwind_info points to a normal cached unwind info */
2759 jinfo->from_aot = 0;
2760 jinfo->from_llvm = 1;
2761
2762 for (i = 0; i < ei_len; ++i) {
2763 /*
2764 * clauses contains the original IL exception info saved by the AOT
2765 * compiler, we have to combine that with the information produced by LLVM
2766 */
2767 /* The type_info entries contain IL clause indexes */
2768 int clause_index = read32 (type_info [i]);
2769 MonoJitExceptionInfo *jei = &jinfo->clauses [i];
2770 MonoJitExceptionInfo *orig_jei = &clauses [clause_index];
2771
2772 g_assert (clause_index < num_clauses);
2773 jei->flags = orig_jei->flags;
2774 jei->data.catch_class = orig_jei->data.catch_class;
2775
2776 jei->try_start = ei [i].try_start;
2777 jei->try_end = ei [i].try_end;
2778 jei->handler_start = ei [i].handler_start;
2779 jei->clause_index = clause_index;
2780
2781 if (is_thumb_code (amodule, (guint8 *)jei->try_start)) {
2782 jei->try_start = (void*)((mgreg_t)jei->try_start & ~1);
2783 jei->try_end = (void*)((mgreg_t)jei->try_end & ~1);
2784 /* Make sure we transition to thumb when a handler starts */
2785 jei->handler_start = (void*)((mgreg_t)jei->handler_start + 1);
2786 }
2787 }
2788
2789 /* See exception_cb () in mini-llvm.c as to why this is needed */
2790 nindex = ei_len;
2791 for (i = 0; i < ei_len; ++i) {
2792 gint32 cindex1 = read32 (type_info [i]);
2793 GSList *l;
2794
2795 for (l = nesting [cindex1]; l; l = l->next) {
2796 gint32 nesting_cindex = GPOINTER_TO_INT (l->data);
2797 MonoJitExceptionInfo *nesting_ei;
2798 MonoJitExceptionInfo *nesting_clause = &clauses [nesting_cindex];
2799
2800 nesting_ei = &jinfo->clauses [nindex];
2801 nindex ++;
2802
2803 memcpy (nesting_ei, &jinfo->clauses [i], sizeof (MonoJitExceptionInfo));
2804 nesting_ei->flags = nesting_clause->flags;
2805 nesting_ei->data.catch_class = nesting_clause->data.catch_class;
2806 nesting_ei->clause_index = nesting_cindex;
2807 }
2808 }
2809 g_assert (nindex == ei_len + nested_len);
2810
2811 return jinfo;
2812 }
2813
2814 static gpointer
2815 alloc0_jit_info_data (MonoDomain *domain, int size, gboolean async_context)
2816 {
2817 gpointer res;
2818
2819 if (async_context) {
2820 res = mono_domain_alloc0_lock_free (domain, size);
2821 InterlockedExchangeAdd (&async_jit_info_size, size);
2822 } else {
2823 res = mono_domain_alloc0 (domain, size);
2824 }
2825 return res;
2826 }
2827
2828 /*
2829 * LOCKING: Acquires the domain lock.
2830 * In async context, this is async safe.
2831 */
2832 static MonoJitInfo*
2833 decode_exception_debug_info (MonoAotModule *amodule, MonoDomain *domain,
2834 MonoMethod *method, guint8* ex_info,
2835 guint8 *code, guint32 code_len)
2836 {
2837 MonoError error;
2838 int i, buf_len, num_clauses, len;
2839 MonoJitInfo *jinfo;
2840 MonoJitInfoFlags flags = JIT_INFO_NONE;
2841 guint unwind_info, eflags;
2842 gboolean has_generic_jit_info, has_dwarf_unwind_info, has_clauses, has_seq_points, has_try_block_holes, has_arch_eh_jit_info;
2843 gboolean from_llvm, has_gc_map;
2844 guint8 *p;
2845 int try_holes_info_size, num_holes;
2846 int this_reg = 0, this_offset = 0;
2847 gboolean async;
2848
2849 /* Load the method info from the AOT file */
2850 async = mono_thread_info_is_async_context ();
2851
2852 p = ex_info;
2853 eflags = decode_value (p, &p);
2854 has_generic_jit_info = (eflags & 1) != 0;
2855 has_dwarf_unwind_info = (eflags & 2) != 0;
2856 has_clauses = (eflags & 4) != 0;
2857 has_seq_points = (eflags & 8) != 0;
2858 from_llvm = (eflags & 16) != 0;
2859 has_try_block_holes = (eflags & 32) != 0;
2860 has_gc_map = (eflags & 64) != 0;
2861 has_arch_eh_jit_info = (eflags & 128) != 0;
2862
2863 if (has_dwarf_unwind_info) {
2864 unwind_info = decode_value (p, &p);
2865 g_assert (unwind_info < (1 << 30));
2866 } else {
2867 unwind_info = decode_value (p, &p);
2868 }
2869 if (has_generic_jit_info)
2870 flags = (MonoJitInfoFlags)(flags | JIT_INFO_HAS_GENERIC_JIT_INFO);
2871
2872 if (has_try_block_holes) {
2873 num_holes = decode_value (p, &p);
2874 flags = (MonoJitInfoFlags)(flags | JIT_INFO_HAS_TRY_BLOCK_HOLES);
2875 try_holes_info_size = sizeof (MonoTryBlockHoleTableJitInfo) + num_holes * sizeof (MonoTryBlockHoleJitInfo);
2876 } else {
2877 num_holes = try_holes_info_size = 0;
2878 }
2879
2880 if (has_arch_eh_jit_info) {
2881 flags = (MonoJitInfoFlags)(flags | JIT_INFO_HAS_ARCH_EH_INFO);
2882 /* Overwrite the original code_len which includes alignment padding */
2883 code_len = decode_value (p, &p);
2884 }
2885
2886 /* Exception table */
2887 if (has_clauses)
2888 num_clauses = decode_value (p, &p);
2889 else
2890 num_clauses = 0;
2891
2892 if (from_llvm) {
2893 MonoJitExceptionInfo *clauses;
2894 GSList **nesting;
2895
2896 // FIXME: async
2897 g_assert (!async);
2898
2899 /*
2900 * Part of the info is encoded by the AOT compiler, the rest is in the .eh_frame
2901 * section.
2902 */
2903 clauses = g_new0 (MonoJitExceptionInfo, num_clauses);
2904 nesting = g_new0 (GSList*, num_clauses);
2905
2906 for (i = 0; i < num_clauses; ++i) {
2907 MonoJitExceptionInfo *ei = &clauses [i];
2908
2909 ei->flags = decode_value (p, &p);
2910
2911 if (decode_value (p, &p)) {
2912 ei->data.catch_class = decode_klass_ref (amodule, p, &p, &error);
2913 mono_error_cleanup (&error); /* FIXME don't swallow the error */
2914 }
2915
2916 ei->clause_index = i;
2917
2918 ei->try_offset = decode_value (p, &p);
2919 ei->try_len = decode_value (p, &p);
2920 ei->handler_offset = decode_value (p, &p);
2921 ei->handler_len = decode_value (p, &p);
2922
2923 /* Read the list of nesting clauses */
2924 while (TRUE) {
2925 int nesting_index = decode_value (p, &p);
2926 if (nesting_index == -1)
2927 break;
2928 nesting [i] = g_slist_prepend (nesting [i], GINT_TO_POINTER (nesting_index));
2929 }
2930 }
2931
2932 jinfo = decode_llvm_mono_eh_frame (amodule, domain, method, code, code_len, clauses, num_clauses, flags, nesting, &this_reg, &this_offset);
2933
2934 g_free (clauses);
2935 for (i = 0; i < num_clauses; ++i)
2936 g_slist_free (nesting [i]);
2937 g_free (nesting);
2938 } else {
2939 len = mono_jit_info_size (flags, num_clauses, num_holes);
2940 jinfo = (MonoJitInfo *)alloc0_jit_info_data (domain, len, async);
2941 mono_jit_info_init (jinfo, method, code, code_len, flags, num_clauses, num_holes);
2942
2943 for (i = 0; i < jinfo->num_clauses; ++i) {
2944 MonoJitExceptionInfo *ei = &jinfo->clauses [i];
2945
2946 ei->flags = decode_value (p, &p);
2947
2948 #ifdef MONO_CONTEXT_SET_LLVM_EXC_REG
2949 /* Not used for catch clauses */
2950 if (ei->flags != MONO_EXCEPTION_CLAUSE_NONE)
2951 ei->exvar_offset = decode_value (p, &p);
2952 #else
2953 ei->exvar_offset = decode_value (p, &p);
2954 #endif
2955
2956 if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER || ei->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
2957 ei->data.filter = code + decode_value (p, &p);
2958 else {
2959 int len = decode_value (p, &p);
2960
2961 if (len > 0) {
2962 if (async) {
2963 p += len;
2964 } else {
2965 ei->data.catch_class = decode_klass_ref (amodule, p, &p, &error);
2966 mono_error_cleanup (&error); /* FIXME don't swallow the error */
2967 }
2968 }
2969 }
2970
2971 ei->try_start = code + decode_value (p, &p);
2972 ei->try_end = code + decode_value (p, &p);
2973 ei->handler_start = code + decode_value (p, &p);
2974 }
2975
2976 jinfo->unwind_info = unwind_info;
2977 jinfo->domain_neutral = 0;
2978 jinfo->from_aot = 1;
2979 }
2980
2981 if (has_try_block_holes) {
2982 MonoTryBlockHoleTableJitInfo *table;
2983
2984 g_assert (jinfo->has_try_block_holes);
2985
2986 table = mono_jit_info_get_try_block_hole_table_info (jinfo);
2987 g_assert (table);
2988
2989 table->num_holes = (guint16)num_holes;
2990 for (i = 0; i < num_holes; ++i) {
2991 MonoTryBlockHoleJitInfo *hole = &table->holes [i];
2992 hole->clause = decode_value (p, &p);
2993 hole->length = decode_value (p, &p);
2994 hole->offset = decode_value (p, &p);
2995 }
2996 }
2997
2998 if (has_arch_eh_jit_info) {
2999 MonoArchEHJitInfo *eh_info;
3000
3001 g_assert (jinfo->has_arch_eh_info);
3002
3003 eh_info = mono_jit_info_get_arch_eh_info (jinfo);
3004 eh_info->stack_size = decode_value (p, &p);
3005 eh_info->epilog_size = decode_value (p, &p);
3006 }
3007
3008 if (async) {
3009 /* The rest is not needed in async mode */
3010 jinfo->async = TRUE;
3011 jinfo->d.aot_info = amodule;
3012 // FIXME: Cache
3013 return jinfo;
3014 }
3015
3016 if (has_generic_jit_info) {
3017 MonoGenericJitInfo *gi;
3018 int len;
3019
3020 g_assert (jinfo->has_generic_jit_info);
3021
3022 gi = mono_jit_info_get_generic_jit_info (jinfo);
3023 g_assert (gi);
3024
3025 gi->nlocs = decode_value (p, &p);
3026 if (gi->nlocs) {
3027 gi->locations = (MonoDwarfLocListEntry *)alloc0_jit_info_data (domain, gi->nlocs * sizeof (MonoDwarfLocListEntry), async);
3028 for (i = 0; i < gi->nlocs; ++i) {
3029 MonoDwarfLocListEntry *entry = &gi->locations [i];
3030
3031 entry->is_reg = decode_value (p, &p);
3032 entry->reg = decode_value (p, &p);
3033 if (!entry->is_reg)
3034 entry->offset = decode_value (p, &p);
3035 if (i > 0)
3036 entry->from = decode_value (p, &p);
3037 entry->to = decode_value (p, &p);
3038 }
3039 gi->has_this = 1;
3040 } else {
3041 if (from_llvm) {
3042 gi->has_this = this_reg != -1;
3043 gi->this_reg = this_reg;
3044 gi->this_offset = this_offset;
3045 } else {
3046 gi->has_this = decode_value (p, &p);
3047 gi->this_reg = decode_value (p, &p);
3048 gi->this_offset = decode_value (p, &p);
3049 }
3050 }
3051
3052 len = decode_value (p, &p);
3053 if (async) {
3054 p += len;
3055 } else {
3056 jinfo->d.method = decode_resolve_method_ref (amodule, p, &p, &error);
3057 mono_error_cleanup (&error); /* FIXME don't swallow the error */
3058 }
3059
3060 gi->generic_sharing_context = alloc0_jit_info_data (domain, sizeof (MonoGenericSharingContext), async);
3061 if (decode_value (p, &p)) {
3062 /* gsharedvt */
3063 MonoGenericSharingContext *gsctx = gi->generic_sharing_context;
3064
3065 gsctx->is_gsharedvt = TRUE;
3066 }
3067 }
3068
3069 if (method && has_seq_points) {
3070 MonoSeqPointInfo *seq_points;
3071
3072 p += mono_seq_point_info_read (&seq_points, p, FALSE);
3073
3074 mono_domain_lock (domain);
3075 /* This could be set already since this function can be called more than once for the same method */
3076 if (!g_hash_table_lookup (domain_jit_info (domain)->seq_points, method))
3077 g_hash_table_insert (domain_jit_info (domain)->seq_points, method, seq_points);
3078 else
3079 mono_seq_point_info_free (seq_points);
3080 mono_domain_unlock (domain);
3081 }
3082
3083 /* Load debug info */
3084 buf_len = decode_value (p, &p);
3085 if (!async)
3086 mono_debug_add_aot_method (domain, method, code, p, buf_len);
3087 p += buf_len;
3088
3089 if (has_gc_map) {
3090 int map_size = decode_value (p, &p);
3091 /* The GC map requires 4 bytes of alignment */
3092 while ((guint64)(gsize)p % 4)
3093 p ++;
3094 jinfo->gc_info = p;
3095 p += map_size;
3096 }
3097
3098 if (amodule != jinfo->d.method->klass->image->aot_module) {
3099 mono_aot_lock ();
3100 if (!ji_to_amodule)
3101 ji_to_amodule = g_hash_table_new (NULL, NULL);
3102 g_hash_table_insert (ji_to_amodule, jinfo, amodule);
3103 mono_aot_unlock ();
3104 }
3105
3106 return jinfo;
3107 }
3108
3109 static gboolean
3110 amodule_contains_code_addr (MonoAotModule *amodule, guint8 *code)
3111 {
3112 return (code >= amodule->jit_code_start && code <= amodule->jit_code_end) ||
3113 (code >= amodule->llvm_code_start && code <= amodule->llvm_code_end);
3114 }
3115
3116 /*
3117 * mono_aot_get_unwind_info:
3118 *
3119 * Return a pointer to the DWARF unwind info belonging to JI.
3120 */
3121 guint8*
3122 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
3123 {
3124 MonoAotModule *amodule;
3125 guint8 *p;
3126 guint8 *code = (guint8 *)ji->code_start;
3127
3128 if (ji->async)
3129 amodule = (MonoAotModule *)ji->d.aot_info;
3130 else
3131 amodule = (MonoAotModule *)jinfo_get_method (ji)->klass->image->aot_module;
3132 g_assert (amodule);
3133 g_assert (ji->from_aot);
3134
3135 if (!amodule_contains_code_addr (amodule, code)) {
3136 /* ji belongs to a different aot module than amodule */
3137 mono_aot_lock ();
3138 g_assert (ji_to_amodule);
3139 amodule = (MonoAotModule *)g_hash_table_lookup (ji_to_amodule, ji);
3140 g_assert (amodule);
3141 g_assert (amodule_contains_code_addr (amodule, code));
3142 mono_aot_unlock ();
3143 }
3144
3145 p = amodule->unwind_info + ji->unwind_info;
3146 *unwind_info_len = decode_value (p, &p);
3147 return p;
3148 }
3149
3150 static void
3151 msort_method_addresses_internal (gpointer *array, int *indexes, int lo, int hi, gpointer *scratch, int *scratch_indexes)
3152 {
3153 int mid = (lo + hi) / 2;
3154 int i, t_lo, t_hi;
3155
3156 if (lo >= hi)
3157 return;
3158
3159 if (hi - lo < 32) {
3160 for (i = lo; i < hi; ++i)
3161 if (array [i] > array [i + 1])
3162 break;
3163 if (i == hi)
3164 /* Already sorted */
3165 return;
3166 }
3167
3168 msort_method_addresses_internal (array, indexes, lo, mid, scratch, scratch_indexes);
3169 msort_method_addresses_internal (array, indexes, mid + 1, hi, scratch, scratch_indexes);
3170
3171 if (array [mid] < array [mid + 1])
3172 return;
3173
3174 /* Merge */
3175 t_lo = lo;
3176 t_hi = mid + 1;
3177 for (i = lo; i <= hi; i ++) {
3178 if (t_lo <= mid && ((t_hi > hi) || array [t_lo] < array [t_hi])) {
3179 scratch [i] = array [t_lo];
3180 scratch_indexes [i] = indexes [t_lo];
3181 t_lo ++;
3182 } else {
3183 scratch [i] = array [t_hi];
3184 scratch_indexes [i] = indexes [t_hi];
3185 t_hi ++;
3186 }
3187 }
3188 for (i = lo; i <= hi; ++i) {
3189 array [i] = scratch [i];
3190 indexes [i] = scratch_indexes [i];
3191 }
3192 }
3193
3194 static void
3195 msort_method_addresses (gpointer *array, int *indexes, int len)
3196 {
3197 gpointer *scratch;
3198 int *scratch_indexes;
3199
3200 scratch = g_new (gpointer, len);
3201 scratch_indexes = g_new (int, len);
3202 msort_method_addresses_internal (array, indexes, 0, len - 1, scratch, scratch_indexes);
3203 g_free (scratch);
3204 g_free (scratch_indexes);
3205 }
3206
3207 /*
3208 * mono_aot_find_jit_info:
3209 *
3210 * In async context, the resulting MonoJitInfo will not have its method field set, and it will not be added
3211 * to the jit info tables.
3212 * FIXME: Large sizes in the lock free allocator
3213 */
3214 MonoJitInfo *
3215 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
3216 {
3217 MonoError error;
3218 int pos, left, right, code_len;
3219 int method_index, table_len;
3220 guint32 token;
3221 MonoAotModule *amodule = (MonoAotModule *)image->aot_module;
3222 MonoMethod *method = NULL;
3223 MonoJitInfo *jinfo;
3224 guint8 *code, *ex_info, *p;
3225 guint32 *table;
3226 int nmethods;
3227 gpointer *methods;
3228 guint8 *code1, *code2;
3229 int methods_len, i;
3230 gboolean async;
3231
3232 if (!amodule)
3233 return NULL;
3234
3235 nmethods = amodule->info.nmethods;
3236
3237 if (domain != mono_get_root_domain ())
3238 /* FIXME: */
3239 return NULL;
3240
3241 if (!amodule_contains_code_addr (amodule, (guint8 *)addr))
3242 return NULL;
3243
3244 async = mono_thread_info_is_async_context ();
3245
3246 /* Compute a sorted table mapping code to method indexes. */
3247 if (!amodule->sorted_methods) {
3248 // FIXME: async
3249 gpointer *methods = g_new0 (gpointer, nmethods);
3250 int *method_indexes = g_new0 (int, nmethods);
3251 int methods_len = 0;
3252
3253 for (i = 0; i < nmethods; ++i) {
3254 /* Skip the -1 entries to speed up sorting */
3255 if (amodule->methods [i] == GINT_TO_POINTER (-1))
3256 continue;
3257 methods [methods_len] = amodule->methods [i];
3258 method_indexes [methods_len] = i;
3259 methods_len ++;
3260 }
3261 /* Use a merge sort as this is mostly sorted */
3262 msort_method_addresses (methods, method_indexes, methods_len);
3263 for (i = 0; i < methods_len -1; ++i)
3264 g_assert (methods [i] <= methods [i + 1]);
3265 amodule->sorted_methods_len = methods_len;
3266 if (InterlockedCompareExchangePointer ((gpointer*)&amodule->sorted_methods, methods, NULL) != NULL)
3267 /* Somebody got in before us */
3268 g_free (methods);
3269 if (InterlockedCompareExchangePointer ((gpointer*)&amodule->sorted_method_indexes, method_indexes, NULL) != NULL)
3270 /* Somebody got in before us */
3271 g_free (method_indexes);
3272 }
3273
3274 /* Binary search in the sorted_methods table */
3275 methods = amodule->sorted_methods;
3276 methods_len = amodule->sorted_methods_len;
3277 code = (guint8 *)addr;
3278 left = 0;
3279 right = methods_len;
3280 while (TRUE) {
3281 pos = (left + right) / 2;
3282
3283 code1 = (guint8 *)methods [pos];
3284 if (pos + 1 == methods_len) {
3285 if (code1 >= amodule->jit_code_start && code1 < amodule->jit_code_end)
3286 code2 = amodule->jit_code_end;
3287 else
3288 code2 = amodule->llvm_code_end;
3289 } else {
3290 code2 = (guint8 *)methods [pos + 1];
3291 }
3292
3293 if (code < code1)
3294 right = pos;
3295 else if (code >= code2)
3296 left = pos + 1;
3297 else
3298 break;
3299 }
3300
3301 g_assert (addr >= methods [pos]);
3302 if (pos + 1 < methods_len)
3303 g_assert (addr < methods [pos + 1]);
3304 method_index = amodule->sorted_method_indexes [pos];
3305
3306 /* In async mode, jinfo is not added to the normal jit info table, so have to cache it ourselves */
3307 if (async) {
3308 JitInfoMap *table = amodule->async_jit_info_table;
3309 int len;
3310
3311 if (table) {
3312 len = table [0].method_index;
3313 for (i = 1; i < len; ++i) {
3314 if (table [i].method_index == method_index)
3315 return table [i].jinfo;
3316 }
3317 }
3318 }
3319
3320 code = (guint8 *)amodule->methods [method_index];
3321 ex_info = &amodule->blob [mono_aot_get_offset (amodule->ex_info_offsets, method_index)];
3322
3323 if (pos == methods_len - 1) {
3324 if (code >= amodule->jit_code_start && code < amodule->jit_code_end)
3325 code_len = amodule->jit_code_end - code;
3326 else
3327 code_len = amodule->llvm_code_end - code;
3328 } else {
3329 code_len = (guint8*)methods [pos + 1] - (guint8*)methods [pos];
3330 }
3331
3332 g_assert ((guint8*)code <= (guint8*)addr && (guint8*)addr < (guint8*)code + code_len);
3333
3334 /* Might be a wrapper/extra method */
3335 if (!async) {
3336 if (amodule->extra_methods) {
3337 amodule_lock (amodule);
3338 method = (MonoMethod *)g_hash_table_lookup (amodule->extra_methods, GUINT_TO_POINTER (method_index));
3339 amodule_unlock (amodule);
3340 } else {
3341 method = NULL;
3342 }
3343
3344 if (!method) {
3345 if (method_index >= image->tables [MONO_TABLE_METHOD].rows) {
3346 /*
3347 * This is hit for extra methods which are called directly, so they are
3348 * not in amodule->extra_methods.
3349 */
3350 table_len = amodule->extra_method_info_offsets [0];
3351 table = amodule->extra_method_info_offsets + 1;
3352 left = 0;
3353 right = table_len;
3354 pos = 0;
3355
3356 /* Binary search */
3357 while (TRUE) {
3358 pos = ((left + right) / 2);
3359
3360 g_assert (pos < table_len);
3361
3362 if (table [pos * 2] < method_index)
3363 left = pos + 1;
3364 else if (table [pos * 2] > method_index)
3365 right = pos;
3366 else
3367 break;
3368 }
3369
3370 p = amodule->blob + table [(pos * 2) + 1];
3371 method = decode_resolve_method_ref (amodule, p, &p, &error);
3372 mono_error_cleanup (&error); /* FIXME don't swallow the error */
3373 if (!method)
3374 /* Happens when a random address is passed in which matches a not-yey called wrapper encoded using its name */
3375 return NULL;
3376 } else {
3377 MonoError error;
3378 token = mono_metadata_make_token (MONO_TABLE_METHOD, method_index + 1);
3379 method = mono_get_method_checked (image, token, NULL, NULL, &error);
3380 if (!method)
3381 g_error ("AOT runtime could not load method due to %s", mono_error_get_message (&error)); /* FIXME don't swallow the error */
3382 }
3383 }
3384 /* FIXME: */
3385 g_assert (method);
3386 }
3387
3388 //printf ("F: %s\n", mono_method_full_name (method, TRUE));
3389
3390 jinfo = decode_exception_debug_info (amodule, domain, method, ex_info, code, code_len);
3391
3392 g_assert ((guint8*)addr >= (guint8*)jinfo->code_start);
3393
3394 /* Add it to the normal JitInfo tables */
3395 if (async) {
3396 JitInfoMap *old_table, *new_table;
3397 int len;
3398
3399 /*
3400 * Use a simple inmutable table with linear search to cache async jit info entries.
3401 * This assumes that the number of entries is small.
3402 */
3403 while (TRUE) {
3404 /* Copy the table, adding a new entry at the end */
3405 old_table = amodule->async_jit_info_table;
3406 if (old_table)
3407 len = old_table[0].method_index;
3408 else
3409 len = 1;
3410 new_table = (JitInfoMap *)alloc0_jit_info_data (domain, (len + 1) * sizeof (JitInfoMap), async);
3411 if (old_table)
3412 memcpy (new_table, old_table, len * sizeof (JitInfoMap));
3413 new_table [0].method_index = len + 1;
3414 new_table [len].method_index = method_index;
3415 new_table [len].jinfo = jinfo;
3416 /* Publish it */
3417 mono_memory_barrier ();
3418 if (InterlockedCompareExchangePointer ((volatile gpointer *)&amodule->async_jit_info_table, new_table, old_table) == old_table)
3419 break;
3420 }
3421 } else {
3422 mono_jit_info_table_add (domain, jinfo);
3423 }
3424
3425 if ((guint8*)addr >= (guint8*)jinfo->code_start + jinfo->code_size)
3426 /* addr is in the padding between methods, see the adjustment of code_size in decode_exception_debug_info () */
3427 return NULL;
3428
3429 return jinfo;
3430 }
3431
3432 static gboolean
3433 decode_patch (MonoAotModule *aot_module, MonoMemPool *mp, MonoJumpInfo *ji, guint8 *buf, guint8 **endbuf)
3434 {
3435 MonoError error;
3436 guint8 *p = buf;
3437 gpointer *table;
3438 MonoImage *image;
3439 int i;
3440
3441 switch (ji->type) {
3442 case MONO_PATCH_INFO_METHOD:
3443 case MONO_PATCH_INFO_METHOD_JUMP:
3444 case MONO_PATCH_INFO_ICALL_ADDR:
3445 case MONO_PATCH_INFO_ICALL_ADDR_CALL:
3446 case MONO_PATCH_INFO_METHOD_RGCTX:
3447 case MONO_PATCH_INFO_METHOD_CODE_SLOT: {
3448 MethodRef ref;
3449 gboolean res;
3450
3451 res = decode_method_ref (aot_module, &ref, p, &p, &error);
3452 mono_error_assert_ok (&error); /* FIXME don't swallow the error */
3453 if (!res)
3454 goto cleanup;
3455
3456 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)) {
3457 ji->data.target = mono_create_ftnptr (mono_domain_get (), mono_create_jit_trampoline_from_token (ref.image, ref.token));
3458 ji->type = MONO_PATCH_INFO_ABS;
3459 }
3460 else {
3461 if (ref.method) {
3462 ji->data.method = ref.method;
3463 }else {
3464 MonoError error;
3465 ji->data.method = mono_get_method_checked (ref.image, ref.token, NULL, NULL, &error);
3466 if (!ji->data.method)
3467 g_error ("AOT Runtime could not load method due to %s", mono_error_get_message (&error)); /* FIXME don't swallow the error */
3468 }
3469 g_assert (ji->data.method);
3470 mono_class_init (ji->data.method->klass);
3471 }
3472 break;
3473 }
3474 case MONO_PATCH_INFO_INTERNAL_METHOD:
3475 case MONO_PATCH_INFO_JIT_ICALL_ADDR: {
3476 guint32 len = decode_value (p, &p);
3477
3478 ji->data.name = (char*)p;
3479 p += len + 1;
3480 break;
3481 }
3482 case MONO_PATCH_INFO_METHODCONST:
3483 /* Shared */
3484 ji->data.method = decode_resolve_method_ref (aot_module, p, &p, &error);
3485 mono_error_cleanup (&error); /* FIXME don't swallow the error */
3486 if (!ji->data.method)
3487 goto cleanup;
3488 break;
3489 case MONO_PATCH_INFO_VTABLE:
3490 case MONO_PATCH_INFO_CLASS:
3491 case MONO_PATCH_INFO_IID:
3492 case MONO_PATCH_INFO_ADJUSTED_IID:
3493 /* Shared */
3494 ji->data.klass = decode_klass_ref (aot_module, p, &p, &error);
3495 mono_error_cleanup (&error); /* FIXME don't swallow the error */
3496 if (!ji->data.klass)
3497 goto cleanup;
3498 break;
3499 case MONO_PATCH_INFO_DELEGATE_TRAMPOLINE:
3500 ji->data.del_tramp = (MonoDelegateClassMethodPair *)mono_mempool_alloc0 (mp, sizeof (MonoDelegateClassMethodPair));
3501 ji->data.del_tramp->klass = decode_klass_ref (aot_module, p, &p, &error);
3502 mono_error_cleanup (&error); /* FIXME don't swallow the error */
3503 if (!ji->data.del_tramp->klass)
3504 goto cleanup;
3505 if (decode_value (p, &p)) {
3506 ji->data.del_tramp->method = decode_resolve_method_ref (aot_module, p, &p, &error);
3507 mono_error_cleanup (&error); /* FIXME don't swallow the error */
3508 if (!ji->data.del_tramp->method)
3509 goto cleanup;
3510 }
3511 ji->data.del_tramp->is_virtual = decode_value (p, &p) ? TRUE : FALSE;
3512 break;
3513 case MONO_PATCH_INFO_IMAGE:
3514 ji->data.image = load_image (aot_module, decode_value (p, &p), &error);
3515 mono_error_cleanup (&error); /* FIXME don't swallow the error */
3516 if (!ji->data.image)
3517 goto cleanup;
3518 break;
3519 case MONO_PATCH_INFO_FIELD:
3520 case MONO_PATCH_INFO_SFLDA:
3521 /* Shared */
3522 ji->data.field = decode_field_info (aot_module, p, &p);
3523 if (!ji->data.field)
3524 goto cleanup;
3525 break;
3526 case MONO_PATCH_INFO_SWITCH:
3527 ji->data.table = (MonoJumpInfoBBTable *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoBBTable));
3528 ji->data.table->table_size = decode_value (p, &p);
3529 table = (void **)mono_domain_alloc (mono_domain_get (), sizeof (gpointer) * ji->data.table->table_size);
3530 ji->data.table->table = (MonoBasicBlock**)table;
3531 for (i = 0; i < ji->data.table->table_size; i++)
3532 table [i] = (gpointer)(gssize)decode_value (p, &p);
3533 break;
3534 case MONO_PATCH_INFO_R4: {
3535 guint32 val;
3536
3537 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (float));
3538 val = decode_value (p, &p);
3539 *(float*)ji->data.target = *(float*)&val;
3540 break;
3541 }
3542 case MONO_PATCH_INFO_R8: {
3543 guint32 val [2];
3544 guint64 v;
3545
3546 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (double));
3547
3548 val [0] = decode_value (p, &p);
3549 val [1] = decode_value (p, &p);
3550 v = ((guint64)val [1] << 32) | ((guint64)val [0]);
3551 *(double*)ji->data.target = *(double*)&v;
3552 break;
3553 }
3554 case MONO_PATCH_INFO_LDSTR:
3555 image = load_image (aot_module, decode_value (p, &p), &error);
3556 mono_error_cleanup (&error); /* FIXME don't swallow the error */
3557 if (!image)
3558 goto cleanup;
3559 ji->data.token = mono_jump_info_token_new (mp, image, MONO_TOKEN_STRING + decode_value (p, &p));
3560 break;
3561 case MONO_PATCH_INFO_RVA:
3562 case MONO_PATCH_INFO_DECLSEC:
3563 case MONO_PATCH_INFO_LDTOKEN:
3564 case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
3565 /* Shared */
3566 image = load_image (aot_module, decode_value (p, &p), &error);
3567 mono_error_cleanup (&error); /* FIXME don't swallow the error */
3568 if (!image)
3569 goto cleanup;
3570 ji->data.token = mono_jump_info_token_new (mp, image, decode_value (p, &p));
3571
3572 ji->data.token->has_context = decode_value (p, &p);
3573 if (ji->data.token->has_context) {
3574 gboolean res = decode_generic_context (aot_module, &ji->data.token->context, p, &p, &error);
3575 mono_error_cleanup (&error); /* FIXME don't swallow the error */
3576 if (!res)
3577 goto cleanup;
3578 }
3579 break;
3580 case MONO_PATCH_INFO_EXC_NAME:
3581 ji->data.klass = decode_klass_ref (aot_module, p, &p, &error);
3582 mono_error_cleanup (&error); /* FIXME don't swallow the error */
3583 if (!ji->data.klass)
3584 goto cleanup;
3585 ji->data.name = ji->data.klass->name;
3586 break;
3587 case MONO_PATCH_INFO_METHOD_REL:
3588 ji->data.offset = decode_value (p, &p);
3589 break;
3590 case MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG:
3591 case MONO_PATCH_INFO_GC_CARD_TABLE_ADDR:
3592 case MONO_PATCH_INFO_GC_NURSERY_START:
3593 case MONO_PATCH_INFO_GC_NURSERY_BITS:
3594 case MONO_PATCH_INFO_JIT_TLS_ID:
3595 break;
3596 case MONO_PATCH_INFO_CASTCLASS_CACHE:
3597 ji->data.index = decode_value (p, &p);
3598 break;
3599 case MONO_PATCH_INFO_RGCTX_FETCH:
3600 case MONO_PATCH_INFO_RGCTX_SLOT_INDEX: {
3601 gboolean res;
3602 MonoJumpInfoRgctxEntry *entry;
3603 guint32 offset, val;
3604 guint8 *p2;
3605
3606 offset = decode_value (p, &p);
3607 val = decode_value (p, &p);
3608
3609 entry = (MonoJumpInfoRgctxEntry *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
3610 p2 = aot_module->blob + offset;
3611 entry->method = decode_resolve_method_ref (aot_module, p2, &p2, &error);
3612 entry->in_mrgctx = ((val & 1) > 0) ? TRUE : FALSE;
3613 entry->info_type = (MonoRgctxInfoType)((val >> 1) & 0xff);
3614 entry->data = (MonoJumpInfo *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
3615 entry->data->type = (MonoJumpInfoType)((val >> 9) & 0xff);
3616 mono_error_cleanup (&error); /* FIXME don't swallow the error */
3617
3618 res = decode_patch (aot_module, mp, entry->data, p, &p);
3619 if (!res)
3620 goto cleanup;
3621 ji->data.rgctx_entry = entry;
3622 break;
3623 }
3624 case MONO_PATCH_INFO_SEQ_POINT_INFO:
3625 case MONO_PATCH_INFO_AOT_MODULE:
3626 case MONO_PATCH_INFO_MSCORLIB_GOT_ADDR:
3627 break;
3628 case MONO_PATCH_INFO_SIGNATURE:
3629 case MONO_PATCH_INFO_GSHAREDVT_IN_WRAPPER:
3630 ji->data.target = decode_signature (aot_module, p, &p);
3631 break;
3632 case MONO_PATCH_INFO_TLS_OFFSET:
3633 ji->data.target = GINT_TO_POINTER (decode_value (p, &p));
3634 break;
3635 case MONO_PATCH_INFO_GSHAREDVT_CALL: {
3636 MonoJumpInfoGSharedVtCall *info = (MonoJumpInfoGSharedVtCall *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoGSharedVtCall));
3637 info->sig = decode_signature (aot_module, p, &p);
3638 g_assert (info->sig);
3639 info->method = decode_resolve_method_ref (aot_module, p, &p, &error);
3640 mono_error_assert_ok (&error); /* FIXME don't swallow the error */
3641
3642 ji->data.target = info;
3643 break;
3644 }
3645 case MONO_PATCH_INFO_GSHAREDVT_METHOD: {
3646 MonoGSharedVtMethodInfo *info = (MonoGSharedVtMethodInfo *)mono_mempool_alloc0 (mp, sizeof (MonoGSharedVtMethodInfo));
3647 int i;
3648
3649 info->method = decode_resolve_method_ref (aot_module, p, &p, &error);
3650 mono_error_assert_ok (&error); /* FIXME don't swallow the error */
3651
3652 info->num_entries = decode_value (p, &p);
3653 info->count_entries = info->num_entries;
3654 info->entries = (MonoRuntimeGenericContextInfoTemplate *)mono_mempool_alloc0 (mp, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->num_entries);
3655 for (i = 0; i < info->num_entries; ++i) {
3656 MonoRuntimeGenericContextInfoTemplate *template_ = &info->entries [i];
3657
3658 template_->info_type = (MonoRgctxInfoType)decode_value (p, &p);
3659 switch (mini_rgctx_info_type_to_patch_info_type (template_->info_type)) {
3660 case MONO_PATCH_INFO_CLASS: {
3661 MonoClass *klass = decode_klass_ref (aot_module, p, &p, &error);
3662 mono_error_cleanup (&error); /* FIXME don't swallow the error */
3663 if (!klass)
3664 goto cleanup;
3665 template_->data = &klass->byval_arg;
3666 break;
3667 }
3668 case MONO_PATCH_INFO_FIELD:
3669 template_->data = decode_field_info (aot_module, p, &p);
3670 if (!template_->data)
3671 goto cleanup;
3672 break;
3673 default:
3674 g_assert_not_reached ();
3675 break;
3676 }
3677 }
3678 ji->data.target = info;
3679 break;
3680 }
3681 case MONO_PATCH_INFO_LDSTR_LIT: {
3682 int len = decode_value (p, &p);
3683 char *s;
3684
3685 s = (char *)mono_mempool_alloc0 (mp, len + 1);
3686 memcpy (s, p, len + 1);
3687 p += len + 1;
3688
3689 ji->data.target = s;
3690 break;
3691 }
3692 case MONO_PATCH_INFO_VIRT_METHOD: {
3693 MonoJumpInfoVirtMethod *info = (MonoJumpInfoVirtMethod *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoVirtMethod));
3694
3695 info->klass = decode_klass_ref (aot_module, p, &p, &error);
3696 mono_error_assert_ok (&error); /* FIXME don't swallow the error */
3697
3698 info->method = decode_resolve_method_ref (aot_module, p, &p, &error);
3699 mono_error_assert_ok (&error); /* FIXME don't swallow the error */
3700
3701 ji->data.target = info;
3702 break;
3703 }
3704 case MONO_PATCH_INFO_GC_SAFE_POINT_FLAG:
3705 case MONO_PATCH_INFO_GET_TLS_TRAMP:
3706 case MONO_PATCH_INFO_JIT_THREAD_ATTACH:
3707 break;
3708 case MONO_PATCH_INFO_AOT_JIT_INFO:
3709 ji->data.index = decode_value (p, &p);
3710 break;
3711 default:
3712 g_warning ("unhandled type %d", ji->type);
3713 g_assert_not_reached ();
3714 }
3715
3716 *endbuf = p;
3717
3718 return TRUE;
3719
3720 cleanup:
3721 return FALSE;
3722 }
3723
3724 /*
3725 * decode_patches:
3726 *
3727 * Decode a list of patches identified by the got offsets in GOT_OFFSETS. Return an array of
3728 * MonoJumpInfo structures allocated from MP.
3729 */
3730 static MonoJumpInfo*
3731 decode_patches (MonoAotModule *amodule, MonoMemPool *mp, int n_patches, gboolean llvm, guint32 *got_offsets)
3732 {
3733 MonoJumpInfo *patches;
3734 MonoJumpInfo *ji;
3735 gpointer *got;
3736 guint32 *got_info_offsets;
3737 int i;
3738 gboolean res;
3739
3740 if (llvm) {
3741 got = amodule->llvm_got;
3742 got_info_offsets = (guint32 *)amodule->llvm_got_info_offsets;
3743 } else {
3744 got = amodule->got;
3745 got_info_offsets = (guint32 *)amodule->got_info_offsets;
3746 }
3747
3748 patches = (MonoJumpInfo *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo) * n_patches);
3749 for (i = 0; i < n_patches; ++i) {
3750 guint8 *p = amodule->blob + mono_aot_get_offset (got_info_offsets, got_offsets [i]);
3751
3752 ji = &patches [i];
3753 ji->type = (MonoJumpInfoType)decode_value (p, &p);
3754
3755 /* See load_method () for SFLDA */
3756 if (got && got [got_offsets [i]] && ji->type != MONO_PATCH_INFO_SFLDA) {
3757 /* Already loaded */
3758 } else {
3759 res = decode_patch (amodule, mp, ji, p, &p);
3760 if (!res)
3761 return NULL;
3762 }
3763 }
3764
3765 return patches;
3766 }
3767
3768 static MonoJumpInfo*
3769 load_patch_info (MonoAotModule *amodule, MonoMemPool *mp, int n_patches,
3770 gboolean llvm, guint32 **got_slots,
3771 guint8 *buf, guint8 **endbuf)
3772 {
3773 MonoJumpInfo *patches;
3774 int pindex;
3775 guint8 *p;
3776
3777 p = buf;
3778
3779 *got_slots = (guint32 *)g_malloc (sizeof (guint32) * n_patches);
3780 for (pindex = 0; pindex < n_patches; ++pindex) {
3781 (*got_slots)[pindex] = decode_value (p, &p);
3782 }
3783
3784 patches = decode_patches (amodule, mp, n_patches, llvm, *got_slots);
3785 if (!patches) {
3786 g_free (*got_slots);
3787 *got_slots = NULL;
3788 return NULL;
3789 }
3790
3791 *endbuf = p;
3792 return patches;
3793 }
3794
3795 static void
3796 register_jump_target_got_slot (MonoDomain *domain, MonoMethod *method, gpointer *got_slot)
3797 {
3798 /*
3799 * Jump addresses cannot be patched by the trampoline code since it
3800 * does not have access to the caller's address. Instead, we collect
3801 * the addresses of the GOT slots pointing to a method, and patch
3802 * them after the method has been compiled.
3803 */
3804 MonoJitDomainInfo *info = domain_jit_info (domain);
3805 GSList *list;
3806
3807 mono_domain_lock (domain);
3808 if (!info->jump_target_got_slot_hash)
3809 info->jump_target_got_slot_hash = g_hash_table_new (NULL, NULL);
3810 list = (GSList *)g_hash_table_lookup (info->jump_target_got_slot_hash, method);
3811 list = g_slist_prepend (list, got_slot);
3812 g_hash_table_insert (info->jump_target_got_slot_hash, method, list);
3813 mono_domain_unlock (domain);
3814 }
3815
3816 /*
3817 * load_method:
3818 *
3819 * Load the method identified by METHOD_INDEX from the AOT image. Return a
3820 * pointer to the native code of the method, or NULL if not found.
3821 * METHOD might not be set if the caller only has the image/token info.
3822 */
3823 static gpointer
3824 load_method (MonoDomain *domain, MonoAotModule *amodule, MonoImage *image, MonoMethod *method, guint32 token, int method_index,
3825 MonoError *error)
3826 {
3827 MonoJitInfo *jinfo = NULL;
3828 guint8 *code = NULL, *info;
3829 gboolean res;
3830
3831 mono_error_init (error);
3832
3833 init_amodule_got (amodule);
3834
3835 if (mono_profiler_get_events () & MONO_PROFILE_ENTER_LEAVE) {
3836 if (mono_aot_only)
3837 /* The caller cannot handle this */
3838 g_assert_not_reached ();
3839 return NULL;
3840 }
3841
3842 if (domain != mono_get_root_domain ())
3843 /* Non shared AOT code can't be used in other appdomains */
3844 return NULL;
3845
3846 if (amodule->out_of_date)
3847 return NULL;
3848
3849 if (amodule->info.llvm_get_method) {
3850 /*
3851 * Obtain the method address by calling a generated function in the LLVM module.
3852 */
3853 gpointer (*get_method) (int) = (gpointer (*)(int))amodule->info.llvm_get_method;
3854 code = (guint8 *)get_method (method_index);
3855 }
3856
3857 if (!code) {
3858 /* JITted method */
3859 if (amodule->methods [method_index] == GINT_TO_POINTER (-1)) {
3860 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
3861 char *full_name;
3862
3863 if (!method) {
3864 method = mono_get_method_checked (image, token, NULL, NULL, error);
3865 if (!method)
3866 return NULL;
3867 }
3868 full_name = mono_method_full_name (method, TRUE);
3869 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT: NOT FOUND: %s.", full_name);
3870 g_free (full_name);
3871 }
3872 return NULL;
3873 }
3874 code = (guint8 *)amodule->methods [method_index];
3875 }
3876
3877 info = &amodule->blob [mono_aot_get_offset (amodule->method_info_offsets, method_index)];
3878
3879 if (!amodule->methods_loaded) {
3880 amodule_lock (amodule);
3881 if (!amodule->methods_loaded) {
3882 guint32 *loaded;
3883
3884 loaded = g_new0 (guint32, amodule->info.nmethods / 32 + 1);
3885 mono_memory_barrier ();
3886 amodule->methods_loaded = loaded;
3887 }
3888 amodule_unlock (amodule);
3889 }
3890
3891 if ((amodule->methods_loaded [method_index / 32] >> (method_index % 32)) & 0x1)
3892 return code;
3893
3894 if (mono_last_aot_method != -1) {
3895 if (mono_jit_stats.methods_aot >= mono_last_aot_method)
3896 return NULL;
3897 else if (mono_jit_stats.methods_aot == mono_last_aot_method - 1) {
3898 if (!method) {
3899 method = mono_get_method_checked (image, token, NULL, NULL, error);
3900 if (!method)
3901 return NULL;
3902 }
3903 if (method) {
3904 char *name = mono_method_full_name (method, TRUE);
3905 g_print ("LAST AOT METHOD: %s.\n", name);
3906 g_free (name);
3907 } else {
3908 g_print ("LAST AOT METHOD: %p %d\n", code, method_index);
3909 }
3910 }
3911 }
3912
3913 if (!(is_llvm_code (amodule, code) && (amodule->info.flags & MONO_AOT_FILE_FLAG_LLVM_ONLY)) ||
3914 (mono_llvm_only && method && method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED)) {
3915 res = init_method (amodule, method_index, method, NULL, NULL, error);
3916 if (!res)
3917 goto cleanup;
3918 }
3919
3920 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
3921 char *full_name;
3922
3923 if (!method) {
3924 method = mono_get_method_checked (image, token, NULL, NULL, error);
3925 if (!method)
3926 return NULL;
3927 }
3928
3929 full_name = mono_method_full_name (method, TRUE);
3930
3931 if (!jinfo)
3932 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
3933
3934 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT: FOUND method %s [%p - %p %p]", full_name, code, code + jinfo->code_size, info);
3935 g_free (full_name);
3936 }
3937
3938 amodule_lock (amodule);
3939
3940 InterlockedIncrement (&mono_jit_stats.methods_aot);
3941
3942 amodule->methods_loaded [method_index / 32] |= 1 << (method_index % 32);
3943
3944 init_plt (amodule);
3945
3946 if (method && method->wrapper_type)
3947 g_hash_table_insert (amodule->method_to_code, method, code);
3948
3949 amodule_unlock (amodule);
3950
3951 if (mono_profiler_get_events () & MONO_PROFILE_JIT_COMPILATION) {
3952 MonoJitInfo *jinfo;
3953
3954 if (!method) {
3955 method = mono_get_method_checked (amodule->assembly->image, token, NULL, NULL, error);
3956 if (!method)
3957 return NULL;
3958 }
3959 mono_profiler_method_jit (method);
3960 jinfo = mono_jit_info_table_find (domain, (char*)code);
3961 g_assert (jinfo);
3962 mono_profiler_method_end_jit (method, jinfo, MONO_PROFILE_OK);
3963 }
3964
3965 return code;
3966
3967 cleanup:
3968 if (jinfo)
3969 g_free (jinfo);
3970
3971 return NULL;
3972 }
3973
3974 static guint32
3975 find_aot_method_in_amodule (MonoAotModule *amodule, MonoMethod *method, guint32 hash_full)
3976 {
3977 MonoError error;
3978 guint32 table_size, entry_size, hash;
3979 guint32 *table, *entry;
3980 guint32 index;
3981 static guint32 n_extra_decodes;
3982
3983 if (!amodule || amodule->out_of_date)
3984 return 0xffffff;
3985
3986 table_size = amodule->extra_method_table [0];
3987 hash = hash_full % table_size;
3988 table = amodule->extra_method_table + 1;
3989 entry_size = 3;
3990
3991 entry = &table [hash * entry_size];
3992
3993 if (entry [0] == 0)
3994 return 0xffffff;
3995
3996 index = 0xffffff;
3997 while (TRUE) {
3998 guint32 key = entry [0];
3999 guint32 value = entry [1];
4000 guint32 next = entry [entry_size - 1];
4001 MonoMethod *m;
4002 guint8 *p, *orig_p;
4003
4004 p = amodule->blob + key;
4005 orig_p = p;
4006
4007 amodule_lock (amodule);
4008 if (!amodule->method_ref_to_method)
4009 amodule->method_ref_to_method = g_hash_table_new (NULL, NULL);
4010 m = (MonoMethod *)g_hash_table_lookup (amodule->method_ref_to_method, p);
4011 amodule_unlock (amodule);
4012 if (!m) {
4013 m = decode_resolve_method_ref_with_target (amodule, method, p, &p, &error);
4014 mono_error_cleanup (&error); /* FIXME don't swallow the error */
4015 /*
4016 * Can't catche runtime invoke wrappers since it would break
4017 * the check in decode_method_ref_with_target ().
4018 */
4019 if (m && m->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE) {
4020 amodule_lock (amodule);
4021 g_hash_table_insert (amodule->method_ref_to_method, orig_p, m);
4022 amodule_unlock (amodule);
4023 }
4024 }
4025 if (m == method) {
4026 index = value;
4027 break;
4028 }
4029
4030 /* Methods decoded needlessly */
4031 if (m) {
4032 //printf ("%d %s %s %p\n", n_extra_decodes, mono_method_full_name (method, TRUE), mono_method_full_name (m, TRUE), orig_p);
4033 n_extra_decodes ++;
4034 }
4035
4036 if (next != 0)
4037 entry = &table [next * entry_size];
4038 else
4039 break;
4040 }
4041
4042 return index;
4043 }
4044
4045 static void
4046 add_module_cb (gpointer key, gpointer value, gpointer user_data)
4047 {
4048 g_ptr_array_add ((GPtrArray*)user_data, value);
4049 }
4050
4051 /*
4052 * find_aot_method:
4053 *
4054 * Try finding METHOD in the extra_method table in all AOT images.
4055 * Return its method index, or 0xffffff if not found. Set OUT_AMODULE to the AOT
4056 * module where the method was found.
4057 */
4058 static guint32
4059 find_aot_method (MonoMethod *method, MonoAotModule **out_amodule)
4060 {
4061 guint32 index;
4062 GPtrArray *modules;
4063 int i;
4064 guint32 hash = mono_aot_method_hash (method);
4065
4066 /* Try the method's module first */
4067 *out_amodule = (MonoAotModule *)method->klass->image->aot_module;
4068 index = find_aot_method_in_amodule ((MonoAotModule *)method->klass->image->aot_module, method, hash);
4069 if (index != 0xffffff)
4070 return index;
4071
4072 /*
4073 * Try all other modules.
4074 * This is needed because generic instances klass->image points to the image
4075 * containing the generic definition, but the native code is generated to the
4076 * AOT image which contains the reference.
4077 */
4078
4079 /* Make a copy to avoid doing the search inside the aot lock */
4080 modules = g_ptr_array_new ();
4081 mono_aot_lock ();
4082 g_hash_table_foreach (aot_modules, add_module_cb, modules);
4083 mono_aot_unlock ();
4084
4085 index = 0xffffff;
4086 for (i = 0; i < modules->len; ++i) {
4087 MonoAotModule *amodule = (MonoAotModule *)g_ptr_array_index (modules, i);
4088
4089 if (amodule != method->klass->image->aot_module)
4090 index = find_aot_method_in_amodule (amodule, method, hash);
4091 if (index != 0xffffff) {
4092 *out_amodule = amodule;
4093 break;
4094 }
4095 }
4096
4097 g_ptr_array_free (modules, TRUE);
4098
4099 return index;
4100 }
4101
4102 guint32
4103 mono_aot_find_method_index (MonoMethod *method)
4104 {
4105 MonoAotModule *out_amodule;
4106 return find_aot_method (method, &out_amodule);
4107 }
4108
4109 static gboolean
4110 init_method (MonoAotModule *amodule, guint32 method_index, MonoMethod *method, MonoClass *init_class, MonoGenericContext *context, MonoError *error)
4111 {
4112 MonoDomain *domain = mono_domain_get ();
4113 MonoMemPool *mp;
4114 MonoClass *klass_to_run_ctor = NULL;
4115 gboolean from_plt = method == NULL;
4116 int pindex, n_patches;
4117 guint8 *p;
4118 MonoJitInfo *jinfo = NULL;
4119 guint8 *code, *info;
4120
4121 mono_error_init (error);
4122
4123 code = (guint8 *)amodule->methods [method_index];
4124 info = &amodule->blob [mono_aot_get_offset (amodule->method_info_offsets, method_index)];
4125
4126 p = info;
4127
4128 //does the method's class has a cctor?
4129 if (decode_value (p, &p) == 1)
4130 klass_to_run_ctor = decode_klass_ref (amodule, p, &p, error);
4131 if (!is_ok (error))
4132 return FALSE;
4133
4134 //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
4135 if (method)
4136 klass_to_run_ctor = method->klass;
4137
4138 n_patches = decode_value (p, &p);
4139
4140 if (n_patches) {
4141 MonoJumpInfo *patches;
4142 guint32 *got_slots;
4143 gboolean llvm;
4144 gpointer *got;
4145
4146 mp = mono_mempool_new ();
4147
4148 if ((gpointer)code >= amodule->info.jit_code_start && (gpointer)code <= amodule->info.jit_code_end) {
4149 llvm = FALSE;
4150 got = amodule->got;
4151 } else {
4152 llvm = TRUE;
4153 got = amodule->llvm_got;
4154 g_assert (got);
4155 }
4156
4157 patches = load_patch_info (amodule, mp, n_patches, llvm, &got_slots, p, &p);
4158 if (patches == NULL) {
4159 mono_mempool_destroy (mp);
4160 goto cleanup;
4161 }
4162
4163 for (pindex = 0; pindex < n_patches; ++pindex) {
4164 MonoJumpInfo *ji = &patches [pindex];
4165 gpointer addr;
4166
4167 /*
4168 * For SFLDA, we need to call resolve_patch_target () since the GOT slot could have
4169 * been initialized by load_method () for a static cctor before the cctor has
4170 * finished executing (#23242).
4171 */
4172 if (!got [got_slots [pindex]] || ji->type == MONO_PATCH_INFO_SFLDA) {
4173 /* In llvm-only made, we might encounter shared methods */
4174 if (mono_llvm_only && ji->type == MONO_PATCH_INFO_METHOD && mono_method_check_context_used (ji->data.method)) {
4175 g_assert (context);
4176 ji->data.method = mono_class_inflate_generic_method_checked (ji->data.method, context, error);
4177 if (!mono_error_ok (error)) {
4178 g_free (got_slots);
4179 mono_mempool_destroy (mp);
4180 return FALSE;
4181 }
4182 }
4183 /* This cannot be resolved in mono_resolve_patch_target () */
4184 if (ji->type == MONO_PATCH_INFO_AOT_JIT_INFO) {
4185 // FIXME: Lookup using the index
4186 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
4187 ji->type = MONO_PATCH_INFO_ABS;
4188 ji->data.target = jinfo;
4189 }
4190 addr = mono_resolve_patch_target (method, domain, code, ji, TRUE, error);
4191 if (!mono_error_ok (error)) {
4192 g_free (got_slots);
4193 mono_mempool_destroy (mp);
4194 return FALSE;
4195 }
4196 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
4197 addr = mono_create_ftnptr (domain, addr);
4198 mono_memory_barrier ();
4199 got [got_slots [pindex]] = addr;
4200 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
4201 register_jump_target_got_slot (domain, ji->data.method, &(got [got_slots [pindex]]));
4202 }
4203 ji->type = MONO_PATCH_INFO_NONE;
4204 }
4205
4206 g_free (got_slots);
4207
4208 mono_mempool_destroy (mp);
4209 }
4210
4211 if (mini_get_debug_options ()->load_aot_jit_info_eagerly)
4212 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
4213
4214 gboolean inited_ok = TRUE;
4215 if (init_class)
4216 inited_ok = mono_runtime_class_init_full (mono_class_vtable (domain, init_class), error);
4217 else if (from_plt && klass_to_run_ctor && !mono_class_is_gtd (klass_to_run_ctor))
4218 inited_ok = mono_runtime_class_init_full (mono_class_vtable (domain, klass_to_run_ctor), error);
4219 if (!inited_ok)
4220 return FALSE;
4221
4222 return TRUE;
4223
4224 cleanup:
4225 if (jinfo)
4226 g_free (jinfo);
4227
4228 return FALSE;
4229 }
4230
4231 static void
4232 init_llvmonly_method (MonoAotModule *amodule, guint32 method_index, MonoMethod *method, MonoClass *init_class, MonoGenericContext *context)
4233 {
4234 gboolean res;
4235 MonoError error;
4236
4237 res = init_method (amodule, method_index, method, init_class, context, &error);
4238 if (!is_ok (&error)) {
4239 MonoException *ex = mono_error_convert_to_exception (&error);
4240 /* Its okay to raise in llvmonly mode */
4241 if (ex)
4242 mono_llvm_throw_exception ((MonoObject*)ex);
4243 }
4244 }
4245
4246 void
4247 mono_aot_init_llvm_method (gpointer aot_module, guint32 method_index)
4248 {
4249 MonoAotModule *amodule = (MonoAotModule *)aot_module;
4250
4251 init_llvmonly_method (amodule, method_index, NULL, NULL, NULL);
4252 }
4253
4254 void
4255 mono_aot_init_gshared_method_this (gpointer aot_module, guint32 method_index, MonoObject *this_obj)
4256 {
4257 MonoAotModule *amodule = (MonoAotModule *)aot_module;
4258 MonoClass *klass;
4259 MonoGenericContext *context;
4260 MonoMethod *method;
4261
4262 // FIXME:
4263 g_assert (this_obj);
4264 klass = this_obj->vtable->klass;
4265
4266 amodule_lock (amodule);
4267 method = (MonoMethod *)g_hash_table_lookup (amodule->extra_methods, GUINT_TO_POINTER (method_index));
4268 amodule_unlock (amodule);
4269
4270 g_assert (method);
4271 context = mono_method_get_context (method);
4272 g_assert (context);
4273
4274 init_llvmonly_method (amodule, method_index, NULL, klass, context);
4275 }
4276
4277 void
4278 mono_aot_init_gshared_method_mrgctx (gpointer aot_module, guint32 method_index, MonoMethodRuntimeGenericContext *rgctx)
4279 {
4280 MonoAotModule *amodule = (MonoAotModule *)aot_module;
4281 MonoGenericContext context = { NULL, NULL };
4282 MonoClass *klass = rgctx->class_vtable->klass;
4283
4284 if (mono_class_is_ginst (klass))
4285 context.class_inst = mono_class_get_generic_class (klass)->context.class_inst;
4286 else if (mono_class_is_gtd (klass))
4287 context.class_inst = mono_class_get_generic_container (klass)->context.class_inst;
4288 context.method_inst = rgctx->method_inst;
4289
4290 init_llvmonly_method (amodule, method_index, NULL, rgctx->class_vtable->klass, &context);
4291 }
4292
4293 void
4294 mono_aot_init_gshared_method_vtable (gpointer aot_module, guint32 method_index, MonoVTable *vtable)
4295 {
4296 MonoAotModule *amodule = (MonoAotModule *)aot_module;
4297 MonoClass *klass;
4298 MonoGenericContext *context;
4299 MonoMethod *method;
4300
4301 klass = vtable->klass;
4302
4303 amodule_lock (amodule);
4304 method = (MonoMethod *)g_hash_table_lookup (amodule->extra_methods, GUINT_TO_POINTER (method_index));
4305 amodule_unlock (amodule);
4306
4307 g_assert (method);
4308 context = mono_method_get_context (method);
4309 g_assert (context);
4310
4311 init_llvmonly_method (amodule, method_index, NULL, klass, context);
4312 }
4313
4314 /*
4315 * mono_aot_get_method_checked:
4316 *
4317 * Return a pointer to the AOTed native code for METHOD if it can be found,
4318 * NULL otherwise.
4319 * On platforms with function pointers, this doesn't return a function pointer.
4320 */
4321 gpointer
4322 mono_aot_get_method_checked (MonoDomain *domain, MonoMethod *method, MonoError *error)
4323 {
4324 MonoClass *klass = method->klass;
4325 MonoMethod *orig_method = method;
4326 guint32 method_index;
4327 MonoAotModule *amodule = (MonoAotModule *)klass->image->aot_module;
4328 guint8 *code;
4329 gboolean cache_result = FALSE;
4330 MonoError inner_error;
4331
4332 mono_error_init (error);
4333
4334 if (domain != mono_get_root_domain ())
4335 /* Non shared AOT code can't be used in other appdomains */
4336 return NULL;
4337
4338 if (enable_aot_cache && !amodule && domain->entry_assembly && klass->image == mono_defaults.corlib) {
4339 /* This cannot be AOTed during startup, so do it now */
4340 if (!mscorlib_aot_loaded) {
4341 mscorlib_aot_loaded = TRUE;
4342 load_aot_module (klass->image->assembly, NULL);
4343 amodule = (MonoAotModule *)klass->image->aot_module;
4344 }
4345 }
4346
4347 if (!amodule)
4348 return NULL;
4349
4350 if (amodule->out_of_date)
4351 return NULL;
4352
4353 if ((method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
4354 (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
4355 (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
4356 (method->flags & METHOD_ATTRIBUTE_ABSTRACT))
4357 return NULL;
4358
4359 /*
4360 * Use the original method instead of its invoke-with-check wrapper.
4361 * This is not a problem when using full-aot, since it doesn't support
4362 * remoting.
4363 */
4364 if (mono_aot_only && method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)
4365 return mono_aot_get_method_checked (domain, mono_marshal_method_from_wrapper (method), error);
4366
4367 g_assert (klass->inited);
4368
4369 /* Find method index */
4370 method_index = 0xffffff;
4371 if (method->is_inflated && !method->wrapper_type && mono_method_is_generic_sharable_full (method, TRUE, FALSE, FALSE)) {
4372 MonoMethod *orig_method = method;
4373 /*
4374 * For generic methods, we store the fully shared instance in place of the
4375 * original method.
4376 */
4377 method = mono_method_get_declaring_generic_method (method);
4378 method_index = mono_metadata_token_index (method->token) - 1;
4379
4380 if (mono_llvm_only) {
4381 /* Needed by mono_aot_init_gshared_method_this () */
4382 /* orig_method is a random instance but it is enough to make init_method () work */
4383 amodule_lock (amodule);
4384 g_hash_table_insert (amodule->extra_methods, GUINT_TO_POINTER (method_index), orig_method);
4385 amodule_unlock (amodule);
4386 }
4387 } else if (method->is_inflated || !method->token) {
4388 /* This hash table is used to avoid the slower search in the extra_method_table in the AOT image */
4389 amodule_lock (amodule);
4390 code = (guint8 *)g_hash_table_lookup (amodule->method_to_code, method);
4391 amodule_unlock (amodule);
4392 if (code)
4393 return code;
4394
4395 cache_result = TRUE;
4396 method_index = find_aot_method (method, &amodule);
4397 /*
4398 * Special case the ICollection<T> wrappers for arrays, as they cannot
4399 * be statically enumerated, and each wrapper ends up calling the same
4400 * method in Array.
4401 */
4402 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED && method->klass->rank && strstr (method->name, "System.Collections.Generic")) {
4403 MonoMethod *m = mono_aot_get_array_helper_from_wrapper (method);
4404
4405 code = (guint8 *)mono_aot_get_method_checked (domain, m, &inner_error);
4406 mono_error_cleanup (&inner_error);
4407 if (code)
4408 return code;
4409 }
4410
4411 /*
4412 * Special case Array.GetGenericValueImpl which is a generic icall.
4413 * Generic sharing currently can't handle it, but the icall returns data using
4414 * an out parameter, so the managed-to-native wrappers can share the same code.
4415 */
4416 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass == mono_defaults.array_class && !strcmp (method->name, "GetGenericValueImpl")) {
4417 MonoMethod *m;
4418 MonoGenericContext ctx;
4419 MonoType *args [16];
4420
4421 if (mono_method_signature (method)->params [1]->type == MONO_TYPE_OBJECT)
4422 /* Avoid recursion */
4423 return NULL;
4424
4425 m = mono_class_get_method_from_name (mono_defaults.array_class, "GetGenericValueImpl", 2);
4426 g_assert (m);
4427
4428 memset (&ctx, 0, sizeof (ctx));
4429 args [0] = &mono_defaults.object_class->byval_arg;
4430 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
4431
4432 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method_checked (m, &ctx, error), TRUE, TRUE);
4433 if (!m)
4434 g_error ("AOT runtime could not load method due to %s", mono_error_get_message (error)); /* FIXME don't swallow the error */
4435
4436 /*
4437 * Get the code for the <object> instantiation which should be emitted into
4438 * the mscorlib aot image by the AOT compiler.
4439 */
4440 code = (guint8 *)mono_aot_get_method_checked (domain, m, &inner_error);
4441 mono_error_cleanup (&inner_error);
4442 if (code)
4443 return code;
4444 }
4445
4446 /* Same for CompareExchange<T> and Exchange<T> */
4447 /* Same for Volatile.Read<T>/Write<T> */
4448 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass->image == mono_defaults.corlib &&
4449 ((!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]))) ||
4450 (!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)))) ||
4451 (!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])))))) {
4452 MonoMethod *m;
4453 MonoGenericContext ctx;
4454 MonoType *args [16];
4455 gpointer iter = NULL;
4456
4457 while ((m = mono_class_get_methods (method->klass, &iter))) {
4458 if (mono_method_signature (m)->generic_param_count && !strcmp (m->name, method->name))
4459 break;
4460 }
4461 g_assert (m);
4462
4463 memset (&ctx, 0, sizeof (ctx));
4464 args [0] = &mono_defaults.object_class->byval_arg;
4465 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
4466
4467 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method_checked (m, &ctx, error), TRUE, TRUE);
4468 if (!m)
4469 g_error ("AOT runtime could not load method due to %s", mono_error_get_message (error)); /* FIXME don't swallow the error */
4470
4471 /* Avoid recursion */
4472 if (method == m)
4473 return NULL;
4474
4475 /*
4476 * Get the code for the <object> instantiation which should be emitted into
4477 * the mscorlib aot image by the AOT compiler.
4478 */
4479 code = (guint8 *)mono_aot_get_method_checked (domain, m, &inner_error);
4480 mono_error_cleanup (&inner_error);
4481 if (code)
4482 return code;
4483 }
4484
4485 /* For ARRAY_ACCESSOR wrappers with reference types, use the <object> instantiation saved in corlib */
4486 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_UNKNOWN) {
4487 WrapperInfo *info = mono_marshal_get_wrapper_info (method);
4488
4489 if (info->subtype == WRAPPER_SUBTYPE_ARRAY_ACCESSOR) {
4490 MonoMethod *array_method = info->d.array_accessor.method;
4491 if (MONO_TYPE_IS_REFERENCE (&array_method->klass->element_class->byval_arg)) {
4492 int rank;
4493
4494 if (!strcmp (array_method->name, "Set"))
4495 rank = mono_method_signature (array_method)->param_count - 1;
4496 else if (!strcmp (array_method->name, "Get") || !strcmp (array_method->name, "Address"))
4497 rank = mono_method_signature (array_method)->param_count;
4498 else
4499 g_assert_not_reached ();
4500 MonoClass *obj_array_class = mono_array_class_get (mono_defaults.object_class, rank);
4501 MonoMethod *m = mono_class_get_method_from_name (obj_array_class, array_method->name, mono_method_signature (array_method)->param_count);
4502 g_assert (m);
4503
4504 m = mono_marshal_get_array_accessor_wrapper (m);
4505 if (m != method) {
4506 code = (guint8 *)mono_aot_get_method_checked (domain, m, &inner_error);
4507 mono_error_cleanup (&inner_error);
4508 if (code)
4509 return code;
4510 }
4511 }
4512 }
4513 }
4514
4515 if (method_index == 0xffffff && method->is_inflated && mono_method_is_generic_sharable_full (method, FALSE, TRUE, FALSE)) {
4516 /* Partial sharing */
4517 MonoMethod *shared;
4518
4519 shared = mini_get_shared_method (method);
4520 method_index = find_aot_method (shared, &amodule);
4521 if (method_index != 0xffffff)
4522 method = shared;
4523 }
4524
4525 if (method_index == 0xffffff && method->is_inflated && mono_method_is_generic_sharable_full (method, FALSE, FALSE, TRUE)) {
4526 MonoMethod *shared;
4527 /* gsharedvt */
4528 /* Use the all-vt shared method since this is what was AOTed */
4529 shared = mini_get_shared_method_full (method, TRUE, TRUE);
4530 method_index = find_aot_method (shared, &amodule);
4531 if (method_index != 0xffffff)
4532 method = mini_get_shared_method_full (method, TRUE, FALSE);
4533 }
4534
4535 if (method_index == 0xffffff) {
4536 if (mono_aot_only && mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
4537 char *full_name;
4538
4539 full_name = mono_method_full_name (method, TRUE);
4540 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.", full_name);
4541 g_free (full_name);
4542 }
4543 return NULL;
4544 }
4545
4546 if (method_index == 0xffffff)
4547 return NULL;
4548
4549 /* Needed by find_jit_info */
4550 amodule_lock (amodule);
4551 g_hash_table_insert (amodule->extra_methods, GUINT_TO_POINTER (method_index), method);
4552 amodule_unlock (amodule);
4553 } else {
4554 /* Common case */
4555 method_index = mono_metadata_token_index (method->token) - 1;
4556 }
4557
4558 code = (guint8 *)load_method (domain, amodule, klass->image, method, method->token, method_index, error);
4559 if (!is_ok (error))
4560 return NULL;
4561 if (code && cache_result) {
4562 amodule_lock (amodule);
4563 g_hash_table_insert (amodule->method_to_code, orig_method, code);
4564 amodule_unlock (amodule);
4565 }
4566 return code;
4567 }
4568
4569 /*
4570 * mono_aot_get_method:
4571 *
4572 * Return a pointer to the AOTed native code for METHOD if it can be found,
4573 * NULL otherwise.
4574 * On platforms with function pointers, this doesn't return a function pointer.
4575 */
4576 gpointer
4577 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
4578 {
4579 MonoError error;
4580
4581 gpointer res = mono_aot_get_method_checked (domain, method, &error);
4582 /* This is external only, so its ok to raise here */
4583 mono_error_raise_exception (&error); /* OK to throw, external only without a good alternative */
4584 return res;
4585 }
4586
4587 /**
4588 * Same as mono_aot_get_method, but we try to avoid loading any metadata from the
4589 * method.
4590 */
4591 gpointer
4592 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token, MonoError *error)
4593 {
4594 MonoAotModule *aot_module = (MonoAotModule *)image->aot_module;
4595 int method_index;
4596 gpointer res;
4597
4598 mono_error_init (error);
4599
4600 if (!aot_module)
4601 return NULL;
4602
4603 method_index = mono_metadata_token_index (token) - 1;
4604
4605 res = load_method (domain, aot_module, image, NULL, token, method_index, error);
4606 return res;
4607 }
4608
4609 typedef struct {
4610 guint8 *addr;
4611 gboolean res;
4612 } IsGotEntryUserData;
4613
4614 static void
4615 check_is_got_entry (gpointer key, gpointer value, gpointer user_data)
4616 {
4617 IsGotEntryUserData *data = (IsGotEntryUserData*)user_data;
4618 MonoAotModule *aot_module = (MonoAotModule*)value;
4619
4620 if (aot_module->got && (data->addr >= (guint8*)(aot_module->got)) && (data->addr < (guint8*)(aot_module->got + aot_module->info.got_size)))
4621 data->res = TRUE;
4622 }
4623
4624 gboolean
4625 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
4626 {
4627 IsGotEntryUserData user_data;
4628
4629 if (!aot_modules)
4630 return FALSE;
4631
4632 user_data.addr = addr;
4633 user_data.res = FALSE;
4634 mono_aot_lock ();
4635 g_hash_table_foreach (aot_modules, check_is_got_entry, &user_data);
4636 mono_aot_unlock ();
4637
4638 return user_data.res;
4639 }
4640
4641 typedef struct {
4642 guint8 *addr;
4643 MonoAotModule *module;
4644 } FindAotModuleUserData;
4645
4646 static void
4647 find_aot_module_cb (gpointer key, gpointer value, gpointer user_data)
4648 {
4649 FindAotModuleUserData *data = (FindAotModuleUserData*)user_data;
4650 MonoAotModule *aot_module = (MonoAotModule*)value;
4651
4652 if (amodule_contains_code_addr (aot_module, data->addr))
4653 data->module = aot_module;
4654 }
4655
4656 static inline MonoAotModule*
4657 find_aot_module (guint8 *code)
4658 {
4659 FindAotModuleUserData user_data;
4660
4661 if (!aot_modules)
4662 return NULL;
4663
4664 /* Reading these need no locking */
4665 if (((gsize)code < aot_code_low_addr) || ((gsize)code > aot_code_high_addr))
4666 return NULL;
4667
4668 user_data.addr = code;
4669 user_data.module = NULL;
4670
4671 mono_aot_lock ();
4672 g_hash_table_foreach (aot_modules, find_aot_module_cb, &user_data);
4673 mono_aot_unlock ();
4674
4675 return user_data.module;
4676 }
4677
4678 void
4679 mono_aot_patch_plt_entry (guint8 *code, guint8 *plt_entry, gpointer *got, mgreg_t *regs, guint8 *addr)
4680 {
4681 MonoAotModule *amodule;
4682
4683 /*
4684 * Since AOT code is only used in the root domain,
4685 * mono_domain_get () != mono_get_root_domain () means the calling method
4686 * is AppDomain:InvokeInDomain, so this is the same check as in
4687 * mono_method_same_domain () but without loading the metadata for the method.
4688 */
4689 if (mono_domain_get () == mono_get_root_domain ()) {
4690 if (!got) {
4691 amodule = find_aot_module (code);
4692 if (amodule)
4693 got = amodule->got;
4694 }
4695 mono_arch_patch_plt_entry (plt_entry, got, regs, addr);
4696 }
4697 }
4698
4699 /*
4700 * mono_aot_plt_resolve:
4701 *
4702 * This function is called by the entries in the PLT to resolve the actual method that
4703 * needs to be called. It returns a trampoline to the method and patches the PLT entry.
4704 * Returns NULL if the something cannot be loaded.
4705 */
4706 gpointer
4707 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code, MonoError *error)
4708 {
4709 #ifdef MONO_ARCH_AOT_SUPPORTED
4710 guint8 *p, *target, *plt_entry;
4711 MonoJumpInfo ji;
4712 MonoAotModule *module = (MonoAotModule*)aot_module;
4713 gboolean res, no_ftnptr = FALSE;
4714 MonoMemPool *mp;
4715 gboolean using_gsharedvt = FALSE;
4716
4717 mono_error_init (error);
4718
4719 //printf ("DYN: %p %d\n", aot_module, plt_info_offset);
4720
4721 p = &module->blob [plt_info_offset];
4722
4723 ji.type = (MonoJumpInfoType)decode_value (p, &p);
4724
4725 mp = mono_mempool_new ();
4726 res = decode_patch (module, mp, &ji, p, &p);
4727
4728 if (!res) {
4729 mono_mempool_destroy (mp);
4730 return NULL;
4731 }
4732
4733 #ifdef MONO_ARCH_GSHAREDVT_SUPPORTED
4734 using_gsharedvt = TRUE;
4735 #endif
4736
4737 /*
4738 * Avoid calling resolve_patch_target in the full-aot case if possible, since
4739 * it would create a trampoline, and we don't need that.
4740 * We could do this only if the method does not need the special handling
4741 * in mono_magic_trampoline ().
4742 */
4743 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) &&
4744 !mono_method_needs_static_rgctx_invoke (ji.data.method, FALSE) && !using_gsharedvt) {
4745 target = (guint8 *)mono_jit_compile_method (ji.data.method, error);
4746 if (!mono_error_ok (error)) {
4747 mono_mempool_destroy (mp);
4748 return NULL;
4749 }
4750 no_ftnptr = TRUE;
4751 } else {
4752 target = (guint8 *)mono_resolve_patch_target (NULL, mono_domain_get (), NULL, &ji, TRUE, error);
4753 if (!mono_error_ok (error)) {
4754 mono_mempool_destroy (mp);
4755 return NULL;
4756 }
4757 }
4758
4759 /*
4760 * The trampoline expects us to return a function descriptor on platforms which use
4761 * it, but resolve_patch_target returns a direct function pointer for some type of
4762 * patches, so have to translate between the two.
4763 * FIXME: Clean this up, but how ?
4764 */
4765 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) {
4766 /* These should already have a function descriptor */
4767 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
4768 /* Our function descriptors have a 0 environment, gcc created ones don't */
4769 if (ji.type != MONO_PATCH_INFO_INTERNAL_METHOD && ji.type != MONO_PATCH_INFO_JIT_ICALL_ADDR && ji.type != MONO_PATCH_INFO_ICALL_ADDR)
4770 g_assert (((gpointer*)target) [2] == 0);
4771 #endif
4772 /* Empty */
4773 } else if (!no_ftnptr) {
4774 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
4775 g_assert (((gpointer*)target) [2] != 0);
4776 #endif
4777 target = (guint8 *)mono_create_ftnptr (mono_domain_get (), target);
4778 }
4779
4780 mono_mempool_destroy (mp);
4781
4782 /* Patch the PLT entry with target which might be the actual method not a trampoline */
4783 plt_entry = mono_aot_get_plt_entry (code);
4784 g_assert (plt_entry);
4785 mono_aot_patch_plt_entry (code, plt_entry, module->got, NULL, target);
4786
4787 return target;
4788 #else
4789 g_assert_not_reached ();
4790 return NULL;
4791 #endif
4792 }
4793
4794 /**
4795 * init_plt:
4796 *
4797 * Initialize the PLT table of the AOT module. Called lazily when the first AOT
4798 * method in the module is loaded to avoid committing memory by writing to it.
4799 * LOCKING: Assumes the AMODULE lock is held.
4800 */
4801 static void
4802 init_plt (MonoAotModule *amodule)
4803 {
4804 int i;
4805 gpointer tramp;
4806
4807 if (amodule->plt_inited)
4808 return;
4809
4810 if (amodule->info.plt_size <= 1) {
4811 amodule->plt_inited = TRUE;
4812 return;
4813 }
4814
4815 tramp = mono_create_specific_trampoline (amodule, MONO_TRAMPOLINE_AOT_PLT, mono_get_root_domain (), NULL);
4816
4817 /*
4818 * Initialize the PLT entries in the GOT to point to the default targets.
4819 */
4820
4821 tramp = mono_create_ftnptr (mono_domain_get (), tramp);
4822 for (i = 1; i < amodule->info.plt_size; ++i)
4823 /* All the default entries point to the AOT trampoline */
4824 ((gpointer*)amodule->got)[amodule->info.plt_got_offset_base + i] = tramp;
4825
4826 amodule->plt_inited = TRUE;
4827 }
4828
4829 /*
4830 * mono_aot_get_plt_entry:
4831 *
4832 * Return the address of the PLT entry called by the code at CODE if exists.
4833 */
4834 guint8*
4835 mono_aot_get_plt_entry (guint8 *code)
4836 {
4837 MonoAotModule *amodule = find_aot_module (code);
4838 guint8 *target = NULL;
4839
4840 if (!amodule)
4841 return NULL;
4842
4843 #ifdef TARGET_ARM
4844 if (is_thumb_code (amodule, code - 4))
4845 return mono_arm_get_thumb_plt_entry (code);
4846 #endif
4847
4848 #ifdef MONO_ARCH_AOT_SUPPORTED
4849 target = mono_arch_get_call_target (code);
4850 #else
4851 g_assert_not_reached ();
4852 #endif
4853
4854 #ifdef MONOTOUCH
4855 while (target != NULL) {
4856 if ((target >= (guint8*)(amodule->plt)) && (target < (guint8*)(amodule->plt_end)))
4857 return target;
4858
4859 // Add 4 since mono_arch_get_call_target assumes we're passing
4860 // the instruction after the actual branch instruction.
4861 target = mono_arch_get_call_target (target + 4);
4862 }
4863
4864 return NULL;
4865 #else
4866 if ((target >= (guint8*)(amodule->plt)) && (target < (guint8*)(amodule->plt_end)))
4867 return target;
4868 else
4869 return NULL;
4870 #endif
4871 }
4872
4873 /*
4874 * mono_aot_get_plt_info_offset:
4875 *
4876 * Return the PLT info offset belonging to the plt entry called by CODE.
4877 */
4878 guint32
4879 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
4880 {
4881 guint8 *plt_entry = mono_aot_get_plt_entry (code);
4882
4883 g_assert (plt_entry);
4884
4885 /* The offset is embedded inside the code after the plt entry */
4886 #ifdef MONO_ARCH_AOT_SUPPORTED
4887 return mono_arch_get_plt_info_offset (plt_entry, regs, code);
4888 #else
4889 g_assert_not_reached ();
4890 return 0;
4891 #endif
4892 }
4893
4894 static gpointer
4895 mono_create_ftnptr_malloc (guint8 *code)
4896 {
4897 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
4898 MonoPPCFunctionDescriptor *ftnptr = g_malloc0 (sizeof (MonoPPCFunctionDescriptor));
4899
4900 ftnptr->code = code;
4901 ftnptr->toc = NULL;
4902 ftnptr->env = NULL;
4903
4904 return ftnptr;
4905 #else
4906 return code;
4907 #endif
4908 }
4909
4910 /*
4911 * mono_aot_register_jit_icall:
4912 *
4913 * Register a JIT icall which is called by trampolines in full-aot mode. This should
4914 * be called from mono_arch_init () during startup.
4915 */
4916 void
4917 mono_aot_register_jit_icall (const char *name, gpointer addr)
4918 {
4919 /* No need for locking */
4920 if (!aot_jit_icall_hash)
4921 aot_jit_icall_hash = g_hash_table_new (g_str_hash, g_str_equal);
4922 g_hash_table_insert (aot_jit_icall_hash, (char*)name, addr);
4923 }
4924
4925 /*
4926 * load_function_full:
4927 *
4928 * Load the function named NAME from the aot image.
4929 */
4930 static gpointer
4931 load_function_full (MonoAotModule *amodule, const char *name, MonoTrampInfo **out_tinfo)
4932 {
4933 char *symbol;
4934 guint8 *p;
4935 int n_patches, pindex;
4936 MonoMemPool *mp;
4937 gpointer code;
4938 guint32 info_offset;
4939
4940 /* Load the code */
4941
4942 symbol = g_strdup_printf ("%s", name);
4943 find_amodule_symbol (amodule, symbol, (gpointer *)&code);
4944 g_free (symbol);
4945 if (!code)
4946 g_error ("Symbol '%s' not found in AOT file '%s'.\n", name, amodule->aot_name);
4947
4948 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT: FOUND function '%s' in AOT file '%s'.", name, amodule->aot_name);
4949
4950 /* Load info */
4951
4952 symbol = g_strdup_printf ("%s_p", name);
4953 find_amodule_symbol (amodule, symbol, (gpointer *)&p);
4954 g_free (symbol);
4955 if (!p)
4956 /* Nothing to patch */
4957 return code;
4958
4959 info_offset = *(guint32*)p;
4960 if (out_tinfo) {
4961 MonoTrampInfo *tinfo;
4962 guint32 code_size, uw_info_len, uw_offset;
4963 guint8 *uw_info;
4964 /* Construct a MonoTrampInfo from the data in the AOT image */
4965
4966 p += sizeof (guint32);
4967 code_size = *(guint32*)p;
4968 p += sizeof (guint32);
4969 uw_offset = *(guint32*)p;
4970 uw_info = amodule->unwind_info + uw_offset;
4971 uw_info_len = decode_value (uw_info, &uw_info);
4972
4973 tinfo = g_new0 (MonoTrampInfo, 1);
4974 tinfo->code = (guint8 *)code;
4975 tinfo->code_size = code_size;
4976 tinfo->uw_info_len = uw_info_len;
4977 if (uw_info_len)
4978 tinfo->uw_info = uw_info;
4979
4980 *out_tinfo = tinfo;
4981 }
4982
4983 p = amodule->blob + info_offset;
4984
4985 /* Similar to mono_aot_load_method () */
4986
4987 n_patches = decode_value (p, &p);
4988
4989 if (n_patches) {
4990 MonoJumpInfo *patches;
4991 guint32 *got_slots;
4992
4993 mp = mono_mempool_new ();
4994
4995 patches = load_patch_info (amodule, mp, n_patches, FALSE, &got_slots, p, &p);
4996 g_assert (patches);
4997
4998 for (pindex = 0; pindex < n_patches; ++pindex) {
4999 MonoJumpInfo *ji = &patches [pindex];
5000 MonoError error;
5001 gpointer target;
5002
5003 if (amodule->got [got_slots [pindex]])
5004 continue;
5005
5006 /*
5007 * When this code is executed, the runtime may not be initalized yet, so
5008 * resolve the patch info by hand.
5009 */
5010 if (ji->type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
5011 if (!strcmp (ji->data.name, "mono_get_lmf_addr")) {
5012 target = mono_get_lmf_addr;
5013 } else if (!strcmp (ji->data.name, "mono_thread_force_interruption_checkpoint_noraise")) {
5014 target = mono_thread_force_interruption_checkpoint_noraise;
5015 } else if (!strcmp (ji->data.name, "mono_interruption_checkpoint_from_trampoline")) {
5016 target = mono_interruption_checkpoint_from_trampoline;
5017 } else if (!strcmp (ji->data.name, "mono_exception_from_token")) {
5018 target = mono_exception_from_token;
5019 } else if (!strcmp (ji->data.name, "mono_throw_exception")) {
5020 target = mono_get_throw_exception ();
5021 } else if (strstr (ji->data.name, "trampoline_func_") == ji->data.name) {
5022 MonoTrampolineType tramp_type2 = (MonoTrampolineType)atoi (ji->data.name + strlen ("trampoline_func_"));
5023 target = (gpointer)mono_get_trampoline_func (tramp_type2);
5024 } else if (strstr (ji->data.name, "specific_trampoline_lazy_fetch_") == ji->data.name) {
5025 /* atoll is needed because the the offset is unsigned */
5026 guint32 slot;
5027 int res;
5028
5029 res = sscanf (ji->data.name, "specific_trampoline_lazy_fetch_%u", &slot);
5030 g_assert (res == 1);
5031 target = mono_create_specific_trampoline (GUINT_TO_POINTER (slot), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, mono_get_root_domain (), NULL);
5032 target = mono_create_ftnptr_malloc ((guint8 *)target);
5033 } else if (!strcmp (ji->data.name, "debugger_agent_single_step_from_context")) {
5034 target = debugger_agent_single_step_from_context;
5035 } else if (!strcmp (ji->data.name, "debugger_agent_breakpoint_from_context")) {
5036 target = debugger_agent_breakpoint_from_context;
5037 } else if (!strcmp (ji->data.name, "throw_exception_addr")) {
5038 target = mono_get_throw_exception_addr ();
5039 } else if (strstr (ji->data.name, "generic_trampoline_")) {
5040 target = mono_aot_get_trampoline (ji->data.name);
5041 } else if (aot_jit_icall_hash && g_hash_table_lookup (aot_jit_icall_hash, ji->data.name)) {
5042 /* Registered by mono_arch_init () */
5043 target = g_hash_table_lookup (aot_jit_icall_hash, ji->data.name);
5044 } else {
5045 fprintf (stderr, "Unknown relocation '%s'\n", ji->data.name);
5046 g_assert_not_reached ();
5047 target = NULL;
5048 }
5049 } else {
5050 /* Hopefully the code doesn't have patches which need method or
5051 * domain to be set.
5052 */
5053 target = mono_resolve_patch_target (NULL, NULL, (guint8 *)code, ji, FALSE, &error);
5054 mono_error_assert_ok (&error);
5055 g_assert (target);
5056 }
5057
5058 amodule->got [got_slots [pindex]] = target;
5059 }
5060
5061 g_free (got_slots);
5062
5063 mono_mempool_destroy (mp);
5064 }
5065
5066 return code;
5067 }
5068
5069 static gpointer
5070 load_function (MonoAotModule *amodule, const char *name)
5071 {
5072 return load_function_full (amodule, name, NULL);
5073 }
5074
5075 static MonoAotModule*
5076 get_mscorlib_aot_module (void)
5077 {
5078 MonoImage *image;
5079 MonoAotModule *amodule;
5080
5081 image = mono_defaults.corlib;
5082 if (image)
5083 amodule = (MonoAotModule *)image->aot_module;
5084 else
5085 amodule = mscorlib_aot_module;
5086 g_assert (amodule);
5087 return amodule;
5088 }
5089
5090 static void
5091 no_trampolines (void)
5092 {
5093 g_assert_not_reached ();
5094 }
5095
5096 /*
5097 * Return the trampoline identified by NAME from the mscorlib AOT file.
5098 * On ppc64, this returns a function descriptor.
5099 */
5100 gpointer
5101 mono_aot_get_trampoline_full (const char *name, MonoTrampInfo **out_tinfo)
5102 {
5103 MonoAotModule *amodule = get_mscorlib_aot_module ();
5104
5105 if (mono_llvm_only) {
5106 *out_tinfo = NULL;
5107 return no_trampolines;
5108 }
5109
5110 return mono_create_ftnptr_malloc ((guint8 *)load_function_full (amodule, name, out_tinfo));
5111 }
5112
5113 gpointer
5114 mono_aot_get_trampoline (const char *name)
5115 {
5116 MonoTrampInfo *out_tinfo;
5117 gpointer code;
5118
5119 code = mono_aot_get_trampoline_full (name, &out_tinfo);
5120 mono_tramp_info_register (out_tinfo, NULL);
5121
5122 return code;
5123 }
5124
5125 static gpointer
5126 read_unwind_info (MonoAotModule *amodule, MonoTrampInfo *info, const char *symbol_name)
5127 {
5128 gpointer symbol_addr;
5129 guint32 uw_offset, uw_info_len;
5130 guint8 *uw_info;
5131
5132 find_amodule_symbol (amodule, symbol_name, &symbol_addr);
5133
5134 if (!symbol_addr)
5135 return NULL;
5136
5137 uw_offset = *(guint32*)symbol_addr;
5138 uw_info = amodule->unwind_info + uw_offset;
5139 uw_info_len = decode_value (uw_info, &uw_info);
5140
5141 info->uw_info_len = uw_info_len;
5142 if (uw_info_len)
5143 info->uw_info = uw_info;
5144 else
5145 info->uw_info = NULL;
5146
5147 /* If successful return the address of the following data */
5148 return (guint32*)symbol_addr + 1;
5149 }
5150
5151 #ifdef MONOTOUCH
5152 #include <mach/mach.h>
5153
5154 static TrampolinePage* trampoline_pages [MONO_AOT_TRAMP_NUM];
5155
5156 static void
5157 read_page_trampoline_uwinfo (MonoTrampInfo *info, int tramp_type, gboolean is_generic)
5158 {
5159 char symbol_name [128];
5160
5161 if (tramp_type == MONO_AOT_TRAMP_SPECIFIC)
5162 sprintf (symbol_name, "specific_trampolines_page_%s_p", is_generic ? "gen" : "sp");
5163 else if (tramp_type == MONO_AOT_TRAMP_STATIC_RGCTX)
5164 sprintf (symbol_name, "rgctx_trampolines_page_%s_p", is_generic ? "gen" : "sp");
5165 else if (tramp_type == MONO_AOT_TRAMP_IMT)
5166 sprintf (symbol_name, "imt_trampolines_page_%s_p", is_generic ? "gen" : "sp");
5167 else if (tramp_type == MONO_AOT_TRAMP_GSHAREDVT_ARG)
5168 sprintf (symbol_name, "gsharedvt_trampolines_page_%s_p", is_generic ? "gen" : "sp");
5169 else
5170 g_assert_not_reached ();
5171
5172 read_unwind_info (mono_defaults.corlib->aot_module, info, symbol_name);
5173 }
5174
5175 static unsigned char*
5176 get_new_trampoline_from_page (int tramp_type)
5177 {
5178 MonoAotModule *amodule;
5179 MonoImage *image;
5180 TrampolinePage *page;
5181 int count;
5182 void *tpage;
5183 vm_address_t addr, taddr;
5184 kern_return_t ret;
5185 vm_prot_t prot, max_prot;
5186 int psize, specific_trampoline_size;
5187 unsigned char *code;
5188
5189 specific_trampoline_size = 2 * sizeof (gpointer);
5190
5191 mono_aot_page_lock ();
5192 page = trampoline_pages [tramp_type];
5193 if (page && page->trampolines < page->trampolines_end) {
5194 code = page->trampolines;
5195 page->trampolines += specific_trampoline_size;
5196 mono_aot_page_unlock ();
5197 return code;
5198 }
5199 mono_aot_page_unlock ();
5200 /* the trampoline template page is in the mscorlib module */
5201 image = mono_defaults.corlib;
5202 g_assert (image);
5203
5204 psize = MONO_AOT_TRAMP_PAGE_SIZE;
5205
5206 amodule = image->aot_module;
5207 g_assert (amodule);
5208
5209 if (tramp_type == MONO_AOT_TRAMP_SPECIFIC)
5210 tpage = load_function (amodule, "specific_trampolines_page");
5211 else if (tramp_type == MONO_AOT_TRAMP_STATIC_RGCTX)
5212 tpage = load_function (amodule, "rgctx_trampolines_page");
5213 else if (tramp_type == MONO_AOT_TRAMP_IMT)
5214 tpage = load_function (amodule, "imt_trampolines_page");
5215 else if (tramp_type == MONO_AOT_TRAMP_GSHAREDVT_ARG)
5216 tpage = load_function (amodule, "gsharedvt_arg_trampolines_page");
5217 else
5218 g_error ("Incorrect tramp type for trampolines page");
5219 g_assert (tpage);
5220 /*g_warning ("loaded trampolines page at %x", tpage);*/
5221
5222 /* avoid the unlikely case of looping forever */
5223 count = 40;
5224 page = NULL;
5225 while (page == NULL && count-- > 0) {
5226 MonoTrampInfo *gen_info, *sp_info;
5227
5228 addr = 0;
5229 /* allocate two contiguous pages of memory: the first page will contain the data (like a local constant pool)
5230 * while the second will contain the trampolines.
5231 */
5232 do {
5233 ret = vm_allocate (mach_task_self (), &addr, psize * 2, VM_FLAGS_ANYWHERE);
5234 } while (ret == KERN_ABORTED);
5235 if (ret != KERN_SUCCESS) {
5236 g_error ("Cannot allocate memory for trampolines: %d", ret);
5237 break;
5238 }
5239 /*g_warning ("allocated trampoline double page at %x", addr);*/
5240 /* replace the second page with a remapped trampoline page */
5241 taddr = addr + psize;
5242 vm_deallocate (mach_task_self (), taddr, psize);
5243 ret = vm_remap (mach_task_self (), &taddr, psize, 0, FALSE, mach_task_self(), (vm_address_t)tpage, FALSE, &prot, &max_prot, VM_INHERIT_SHARE);
5244 if (ret != KERN_SUCCESS) {
5245 /* someone else got the page, try again */
5246 vm_deallocate (mach_task_self (), addr, psize);
5247 continue;
5248 }
5249 /*g_warning ("remapped trampoline page at %x", taddr);*/
5250
5251 mono_aot_page_lock ();
5252 page = trampoline_pages [tramp_type];
5253 /* some other thread already allocated, so use that to avoid wasting memory */
5254 if (page && page->trampolines < page->trampolines_end) {
5255 code = page->trampolines;
5256 page->trampolines += specific_trampoline_size;
5257 mono_aot_page_unlock ();
5258 vm_deallocate (mach_task_self (), addr, psize);
5259 vm_deallocate (mach_task_self (), taddr, psize);
5260 return code;
5261 }
5262 page = (TrampolinePage*)addr;
5263 page->next = trampoline_pages [tramp_type];
5264 trampoline_pages [tramp_type] = page;
5265 page->trampolines = (void*)(taddr + amodule->info.tramp_page_code_offsets [tramp_type]);
5266 page->trampolines_end = (void*)(taddr + psize - 64);
5267 code = page->trampolines;
5268 page->trampolines += specific_trampoline_size;
5269 mono_aot_page_unlock ();
5270
5271 /* Register the generic part at the beggining of the trampoline page */
5272 gen_info = mono_tramp_info_create (NULL, (guint8*)taddr, amodule->info.tramp_page_code_offsets [tramp_type], NULL, NULL);
5273 read_page_trampoline_uwinfo (gen_info, tramp_type, TRUE);
5274 mono_tramp_info_register (gen_info, NULL);
5275 /*
5276 * FIXME
5277 * Registering each specific trampoline produces a lot of
5278 * MonoJitInfo structures. Jump trampolines are also registered
5279 * separately.
5280 */
5281 if (tramp_type != MONO_AOT_TRAMP_SPECIFIC) {
5282 /* Register the rest of the page as a single trampoline */
5283 sp_info = mono_tramp_info_create (NULL, code, page->trampolines_end - code, NULL, NULL);
5284 read_page_trampoline_uwinfo (sp_info, tramp_type, FALSE);
5285 mono_tramp_info_register (sp_info, NULL);
5286 }
5287 return code;
5288 }
5289 g_error ("Cannot allocate more trampoline pages: %d", ret);
5290 return NULL;
5291 }
5292
5293 #else
5294 static unsigned char*
5295 get_new_trampoline_from_page (int tramp_type)
5296 {
5297 g_error ("Page trampolines not supported.");
5298 return NULL;
5299 }
5300 #endif
5301
5302
5303 static gpointer
5304 get_new_specific_trampoline_from_page (gpointer tramp, gpointer arg)
5305 {
5306 void *code;
5307 gpointer *data;
5308
5309 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_SPECIFIC);
5310
5311 data = (gpointer*)((char*)code - MONO_AOT_TRAMP_PAGE_SIZE);
5312 data [0] = arg;
5313 data [1] = tramp;
5314 /*g_warning ("new trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
5315 return code;
5316
5317 }
5318
5319 static gpointer
5320 get_new_rgctx_trampoline_from_page (gpointer tramp, gpointer arg)
5321 {
5322 void *code;
5323 gpointer *data;
5324
5325 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_STATIC_RGCTX);
5326
5327 data = (gpointer*)((char*)code - MONO_AOT_TRAMP_PAGE_SIZE);
5328 data [0] = arg;
5329 data [1] = tramp;
5330 /*g_warning ("new rgctx trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
5331 return code;
5332
5333 }
5334
5335 static gpointer
5336 get_new_imt_trampoline_from_page (gpointer arg)
5337 {
5338 void *code;
5339 gpointer *data;
5340
5341 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_IMT);
5342
5343 data = (gpointer*)((char*)code - MONO_AOT_TRAMP_PAGE_SIZE);
5344 data [0] = arg;
5345 /*g_warning ("new imt trampoline at %p for data %p, (stored at %p)", code, arg, data);*/
5346 return code;
5347
5348 }
5349
5350 static gpointer
5351 get_new_gsharedvt_arg_trampoline_from_page (gpointer tramp, gpointer arg)
5352 {
5353 void *code;
5354 gpointer *data;
5355
5356 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_GSHAREDVT_ARG);
5357
5358 data = (gpointer*)((char*)code - MONO_AOT_TRAMP_PAGE_SIZE);
5359 data [0] = arg;
5360 data [1] = tramp;
5361 /*g_warning ("new rgctx trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
5362 return code;
5363 }
5364
5365 /* Return a given kind of trampoline */
5366 /* FIXME set unwind info for these trampolines */
5367 static gpointer
5368 get_numerous_trampoline (MonoAotTrampoline tramp_type, int n_got_slots, MonoAotModule **out_amodule, guint32 *got_offset, guint32 *out_tramp_size)
5369 {
5370 MonoImage *image;
5371 MonoAotModule *amodule = get_mscorlib_aot_module ();
5372 int index, tramp_size;
5373
5374 /* Currently, we keep all trampolines in the mscorlib AOT image */
5375 image = mono_defaults.corlib;
5376
5377 *out_amodule = amodule;
5378
5379 mono_aot_lock ();
5380
5381 #ifdef MONOTOUCH
5382 #define MONOTOUCH_TRAMPOLINES_ERROR ". See http://docs.xamarin.com/ios/troubleshooting for instructions on how to fix this condition."
5383 #else
5384 #define MONOTOUCH_TRAMPOLINES_ERROR ""
5385 #endif
5386 if (amodule->trampoline_index [tramp_type] == amodule->info.num_trampolines [tramp_type]) {
5387 g_error ("Ran out of trampolines of type %d in '%s' (limit %d)%s\n",
5388 tramp_type, image ? image->name : "mscorlib", amodule->info.num_trampolines [tramp_type], MONOTOUCH_TRAMPOLINES_ERROR);
5389 }
5390 index = amodule->trampoline_index [tramp_type] ++;
5391
5392 mono_aot_unlock ();
5393
5394 *got_offset = amodule->info.trampoline_got_offset_base [tramp_type] + (index * n_got_slots);
5395
5396 tramp_size = amodule->info.trampoline_size [tramp_type];
5397
5398 if (out_tramp_size)
5399 *out_tramp_size = tramp_size;
5400
5401 return amodule->trampolines [tramp_type] + (index * tramp_size);
5402 }
5403
5404 static void
5405 no_specific_trampoline (void)
5406 {
5407 g_assert_not_reached ();
5408 }
5409
5410 /*
5411 * Return a specific trampoline from the AOT file.
5412 */
5413 gpointer
5414 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
5415 {
5416 MonoAotModule *amodule;
5417 guint32 got_offset, tramp_size;
5418 guint8 *code, *tramp;
5419 static gpointer generic_trampolines [MONO_TRAMPOLINE_NUM];
5420 static gboolean inited;
5421 static guint32 num_trampolines;
5422
5423 if (mono_llvm_only) {
5424 *code_len = 1;
5425 return no_specific_trampoline;
5426 }
5427
5428 if (!inited) {
5429 mono_aot_lock ();
5430
5431 if (!inited) {
5432 mono_counters_register ("Specific trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &num_trampolines);
5433 inited = TRUE;
5434 }
5435
5436 mono_aot_unlock ();
5437 }
5438
5439 num_trampolines ++;
5440
5441 if (!generic_trampolines [tramp_type]) {
5442 char *symbol;
5443
5444 symbol = mono_get_generic_trampoline_name (tramp_type);
5445 generic_trampolines [tramp_type] = mono_aot_get_trampoline (symbol);
5446 g_free (symbol);
5447 }
5448
5449 tramp = (guint8 *)generic_trampolines [tramp_type];
5450 g_assert (tramp);
5451
5452 if (USE_PAGE_TRAMPOLINES) {
5453 code = (guint8 *)get_new_specific_trampoline_from_page (tramp, arg1);
5454 tramp_size = 8;
5455 } else {
5456 code = (guint8 *)get_numerous_trampoline (MONO_AOT_TRAMP_SPECIFIC, 2, &amodule, &got_offset, &tramp_size);
5457
5458 amodule->got [got_offset] = tramp;
5459 amodule->got [got_offset + 1] = arg1;
5460 }
5461
5462 if (code_len)
5463 *code_len = tramp_size;
5464
5465 return code;
5466 }
5467
5468 gpointer
5469 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
5470 {
5471 MonoAotModule *amodule;
5472 guint8 *code;
5473 guint32 got_offset;
5474
5475 if (USE_PAGE_TRAMPOLINES) {
5476 code = (guint8 *)get_new_rgctx_trampoline_from_page (addr, ctx);
5477 } else {
5478 code = (guint8 *)get_numerous_trampoline (MONO_AOT_TRAMP_STATIC_RGCTX, 2, &amodule, &got_offset, NULL);
5479
5480 amodule->got [got_offset] = ctx;
5481 amodule->got [got_offset + 1] = addr;
5482 }
5483
5484 /* The caller expects an ftnptr */
5485 return mono_create_ftnptr (mono_domain_get (), code);
5486 }
5487
5488 gpointer
5489 mono_aot_get_unbox_trampoline (MonoMethod *method)
5490 {
5491 guint32 method_index = mono_metadata_token_index (method->token) - 1;
5492 MonoAotModule *amodule;
5493 gpointer code;
5494 guint32 *ut, *ut_end, *entry;
5495 int low, high, entry_index = 0;
5496 gpointer symbol_addr;
5497 MonoTrampInfo *tinfo;
5498
5499 if (method->is_inflated && !mono_method_is_generic_sharable_full (method, FALSE, FALSE, FALSE)) {
5500 method_index = find_aot_method (method, &amodule);
5501 if (method_index == 0xffffff && mono_method_is_generic_sharable_full (method, FALSE, TRUE, FALSE)) {
5502 MonoMethod *shared = mini_get_shared_method_full (method, FALSE, FALSE);
5503 method_index = find_aot_method (shared, &amodule);
5504 }
5505 if (method_index == 0xffffff && mono_method_is_generic_sharable_full (method, FALSE, TRUE, TRUE)) {
5506 MonoMethod *shared = mini_get_shared_method_full (method, TRUE, TRUE);
5507 method_index = find_aot_method (shared, &amodule);
5508 }
5509 g_assert (method_index != 0xffffff);
5510 } else {
5511 amodule = (MonoAotModule *)method->klass->image->aot_module;
5512 g_assert (amodule);
5513 }
5514
5515 if (amodule->info.llvm_get_unbox_tramp) {
5516 gpointer (*get_tramp) (int) = (gpointer (*)(int))amodule->info.llvm_get_unbox_tramp;
5517 code = get_tramp (method_index);
5518
5519 if (code)
5520 return code;
5521 }
5522
5523 ut = amodule->unbox_trampolines;
5524 ut_end = amodule->unbox_trampolines_end;
5525
5526 /* Do a binary search in the sorted table */
5527 code = NULL;
5528 low = 0;
5529 high = (ut_end - ut);
5530 while (low < high) {
5531 entry_index = (low + high) / 2;
5532 entry = &ut [entry_index];
5533 if (entry [0] < method_index) {
5534 low = entry_index + 1;
5535 } else if (entry [0] > method_index) {
5536 high = entry_index;
5537 } else {
5538 break;
5539 }
5540 }
5541
5542 code = get_call_table_entry (amodule->unbox_trampoline_addresses, entry_index);
5543 g_assert (code);
5544
5545 tinfo = mono_tramp_info_create (NULL, (guint8 *)code, 0, NULL, NULL);
5546
5547 symbol_addr = read_unwind_info (amodule, tinfo, "unbox_trampoline_p");
5548 if (!symbol_addr) {
5549 mono_tramp_info_free (tinfo);
5550 return FALSE;
5551 }
5552
5553 tinfo->code_size = *(guint32*)symbol_addr;
5554 mono_tramp_info_register (tinfo, NULL);
5555
5556 /* The caller expects an ftnptr */
5557 return mono_create_ftnptr (mono_domain_get (), code);
5558 }
5559
5560 gpointer
5561 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
5562 {
5563 char *symbol;
5564 gpointer code;
5565 MonoAotModule *amodule = (MonoAotModule *)mono_defaults.corlib->aot_module;
5566 guint32 index = MONO_RGCTX_SLOT_INDEX (slot);
5567 static int count = 0;
5568
5569 count ++;
5570 if (index >= amodule->info.num_rgctx_fetch_trampolines) {
5571 static gpointer addr;
5572 gpointer *info;
5573
5574 /*
5575 * Use the general version of the rgctx fetch trampoline. It receives a pair of <slot, trampoline> in the rgctx arg reg.
5576 */
5577 if (!addr)
5578 addr = load_function (amodule, "rgctx_fetch_trampoline_general");
5579 info = (void **)mono_domain_alloc0 (mono_get_root_domain (), sizeof (gpointer) * 2);
5580 info [0] = GUINT_TO_POINTER (slot);
5581 info [1] = mono_create_specific_trampoline (GUINT_TO_POINTER (slot), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, mono_get_root_domain (), NULL);
5582 code = mono_aot_get_static_rgctx_trampoline (info, addr);
5583 return mono_create_ftnptr (mono_domain_get (), code);
5584 }
5585
5586 symbol = mono_get_rgctx_fetch_trampoline_name (slot);
5587 code = load_function ((MonoAotModule *)mono_defaults.corlib->aot_module, symbol);
5588 g_free (symbol);
5589 /* The caller expects an ftnptr */
5590 return mono_create_ftnptr (mono_domain_get (), code);
5591 }
5592
5593 static void
5594 no_imt_trampoline (void)
5595 {
5596 g_assert_not_reached ();
5597 }
5598
5599 gpointer
5600 mono_aot_get_imt_trampoline (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
5601 {
5602 guint32 got_offset;
5603 gpointer code;
5604 gpointer *buf;
5605 int i, index, real_count;
5606 MonoAotModule *amodule;
5607
5608 if (mono_llvm_only)
5609 return no_imt_trampoline;
5610
5611 real_count = 0;
5612 for (i = 0; i < count; ++i) {
5613 MonoIMTCheckItem *item = imt_entries [i];
5614
5615 if (item->is_equals)
5616 real_count ++;
5617 }
5618
5619 /* Save the entries into an array */
5620 buf = (void **)mono_domain_alloc (domain, (real_count + 1) * 2 * sizeof (gpointer));
5621 index = 0;
5622 for (i = 0; i < count; ++i) {
5623 MonoIMTCheckItem *item = imt_entries [i];
5624
5625 if (!item->is_equals)
5626 continue;
5627
5628 g_assert (item->key);
5629
5630 buf [(index * 2)] = item->key;
5631 if (item->has_target_code) {
5632 gpointer *p = (gpointer *)mono_domain_alloc (domain, sizeof (gpointer));
5633 *p = item->value.target_code;
5634 buf [(index * 2) + 1] = p;
5635 } else {
5636 buf [(index * 2) + 1] = &(vtable->vtable [item->value.vtable_slot]);
5637 }
5638 index ++;
5639 }
5640 buf [(index * 2)] = NULL;
5641 buf [(index * 2) + 1] = fail_tramp;
5642
5643 if (USE_PAGE_TRAMPOLINES) {
5644 code = get_new_imt_trampoline_from_page (buf);
5645 } else {
5646 code = get_numerous_trampoline (MONO_AOT_TRAMP_IMT, 1, &amodule, &got_offset, NULL);
5647
5648 amodule->got [got_offset] = buf;
5649 }
5650
5651 return code;
5652 }
5653
5654 gpointer
5655 mono_aot_get_gsharedvt_arg_trampoline (gpointer arg, gpointer addr)
5656 {
5657 MonoAotModule *amodule;
5658 guint8 *code;
5659 guint32 got_offset;
5660
5661 if (USE_PAGE_TRAMPOLINES) {
5662 code = (guint8 *)get_new_gsharedvt_arg_trampoline_from_page (addr, arg);
5663 } else {
5664 code = (guint8 *)get_numerous_trampoline (MONO_AOT_TRAMP_GSHAREDVT_ARG, 2, &amodule, &got_offset, NULL);
5665
5666 amodule->got [got_offset] = arg;
5667 amodule->got [got_offset + 1] = addr;
5668 }
5669
5670 /* The caller expects an ftnptr */
5671 return mono_create_ftnptr (mono_domain_get (), code);
5672 }
5673
5674 /*
5675 * mono_aot_set_make_unreadable:
5676 *
5677 * Set whenever to make all mmaped memory unreadable. In conjuction with a
5678 * SIGSEGV handler, this is useful to find out which pages the runtime tries to read.
5679 */
5680 void
5681 mono_aot_set_make_unreadable (gboolean unreadable)
5682 {
5683 static int inited;
5684
5685 make_unreadable = unreadable;
5686
5687 if (make_unreadable && !inited) {
5688 mono_counters_register ("AOT: pagefaults", MONO_COUNTER_JIT | MONO_COUNTER_INT, &n_pagefaults);
5689 }
5690 }
5691
5692 typedef struct {
5693 MonoAotModule *module;
5694 guint8 *ptr;
5695 } FindMapUserData;
5696
5697 static void
5698 find_map (gpointer key, gpointer value, gpointer user_data)
5699 {
5700 MonoAotModule *module = (MonoAotModule*)value;
5701 FindMapUserData *data = (FindMapUserData*)user_data;
5702
5703 if (!data->module)
5704 if ((data->ptr >= module->mem_begin) && (data->ptr < module->mem_end))
5705 data->module = module;
5706 }
5707
5708 static MonoAotModule*
5709 find_module_for_addr (void *ptr)
5710 {
5711 FindMapUserData data;
5712
5713 if (!make_unreadable)
5714 return NULL;
5715
5716 data.module = NULL;
5717 data.ptr = (guint8*)ptr;
5718
5719 mono_aot_lock ();
5720 g_hash_table_foreach (aot_modules, (GHFunc)find_map, &data);
5721 mono_aot_unlock ();
5722
5723 return data.module;
5724 }
5725
5726 /*
5727 * mono_aot_is_pagefault:
5728 *
5729 * Should be called from a SIGSEGV signal handler to find out whenever @ptr is
5730 * within memory allocated by this module.
5731 */
5732 gboolean
5733 mono_aot_is_pagefault (void *ptr)
5734 {
5735 if (!make_unreadable)
5736 return FALSE;
5737
5738 /*
5739 * Not signal safe, but SIGSEGV's are synchronous, and
5740 * this is only turned on by a MONO_DEBUG option.
5741 */
5742 return find_module_for_addr (ptr) != NULL;
5743 }
5744
5745 /*
5746 * mono_aot_handle_pagefault:
5747 *
5748 * Handle a pagefault caused by an unreadable page by making it readable again.
5749 */
5750 void
5751 mono_aot_handle_pagefault (void *ptr)
5752 {
5753 #ifndef PLATFORM_WIN32
5754 guint8* start = (guint8*)ROUND_DOWN (((gssize)ptr), mono_pagesize ());
5755 int res;
5756
5757 mono_aot_lock ();
5758 res = mono_mprotect (start, mono_pagesize (), MONO_MMAP_READ|MONO_MMAP_WRITE|MONO_MMAP_EXEC);
5759 g_assert (res == 0);
5760
5761 n_pagefaults ++;
5762 mono_aot_unlock ();
5763 #endif
5764 }
5765
5766 #else
5767 /* AOT disabled */
5768
5769 void
5770 mono_aot_init (void)
5771 {
5772 }
5773
5774 void
5775 mono_aot_cleanup (void)
5776 {
5777 }
5778
5779 guint32
5780 mono_aot_find_method_index (MonoMethod *method)
5781 {
5782 g_assert_not_reached ();
5783 return 0;
5784 }
5785
5786 void
5787 mono_aot_init_llvm_method (gpointer aot_module, guint32 method_index)
5788 {
5789 }
5790
5791 void
5792 mono_aot_init_gshared_method_this (gpointer aot_module, guint32 method_index, MonoObject *this)
5793 {
5794 }
5795
5796 void
5797 mono_aot_init_gshared_method_mrgctx (gpointer aot_module, guint32 method_index, MonoMethodRuntimeGenericContext *rgctx)
5798 {
5799 }
5800
5801 void
5802 mono_aot_init_gshared_method_vtable (gpointer aot_module, guint32 method_index, MonoVTable *vtable)
5803 {
5804 }
5805
5806 gpointer
5807 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
5808 {
5809 return NULL;
5810 }
5811
5812 gpointer
5813 mono_aot_get_method_checked (MonoDomain *domain,
5814 MonoMethod *method, MonoError *error)
5815 {
5816 mono_error_init (error);
5817 return NULL;
5818 }
5819
5820 gboolean
5821 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
5822 {
5823 return FALSE;
5824 }
5825
5826 gboolean
5827 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
5828 {
5829 return FALSE;
5830 }
5831
5832 gboolean
5833 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
5834 {
5835 return FALSE;
5836 }
5837
5838 MonoJitInfo *
5839 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
5840 {
5841 return NULL;
5842 }
5843
5844 gpointer
5845 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token, MonoError *error)
5846 {
5847 mono_error_init (error);
5848 return NULL;
5849 }
5850
5851 guint8*
5852 mono_aot_get_plt_entry (guint8 *code)
5853 {
5854 return NULL;
5855 }
5856
5857 gpointer
5858 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code, MonoError *error)
5859 {
5860 return NULL;
5861 }
5862
5863 void
5864 mono_aot_patch_plt_entry (guint8 *code, guint8 *plt_entry, gpointer *got, mgreg_t *regs, guint8 *addr)
5865 {
5866 }
5867
5868 gpointer
5869 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot, MonoError *error)
5870 {
5871 mono_error_init (error);
5872
5873 return NULL;
5874 }
5875
5876 guint32
5877 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
5878 {
5879 g_assert_not_reached ();
5880
5881 return 0;
5882 }
5883
5884 gpointer
5885 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
5886 {
5887 g_assert_not_reached ();
5888 return NULL;
5889 }
5890
5891 gpointer
5892 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
5893 {
5894 g_assert_not_reached ();
5895 return NULL;
5896 }
5897
5898 gpointer
5899 mono_aot_get_trampoline_full (const char *name, MonoTrampInfo **out_tinfo)
5900 {
5901 g_assert_not_reached ();
5902 return NULL;
5903 }
5904
5905 gpointer
5906 mono_aot_get_trampoline (const char *name)
5907 {
5908 g_assert_not_reached ();
5909 return NULL;
5910 }
5911
5912 gpointer
5913 mono_aot_get_unbox_trampoline (MonoMethod *method)
5914 {
5915 g_assert_not_reached ();
5916 return NULL;
5917 }
5918
5919 gpointer
5920 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
5921 {
5922 g_assert_not_reached ();
5923 return NULL;
5924 }
5925
5926 gpointer
5927 mono_aot_get_imt_trampoline (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
5928 {
5929 g_assert_not_reached ();
5930 return NULL;
5931 }
5932
5933 gpointer
5934 mono_aot_get_gsharedvt_arg_trampoline (gpointer arg, gpointer addr)
5935 {
5936 g_assert_not_reached ();
5937 return NULL;
5938 }
5939
5940 void
5941 mono_aot_set_make_unreadable (gboolean unreadable)
5942 {
5943 }
5944
5945 gboolean
5946 mono_aot_is_pagefault (void *ptr)
5947 {
5948 return FALSE;
5949 }
5950
5951 void
5952 mono_aot_handle_pagefault (void *ptr)
5953 {
5954 }
5955
5956 guint8*
5957 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
5958 {
5959 g_assert_not_reached ();
5960 return NULL;
5961 }
5962
5963 void
5964 mono_aot_register_jit_icall (const char *name, gpointer addr)
5965 {
5966 }
5967
5968 #endif
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