?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
[aot] Avoid loading AOT images compiled without --llvm into a runtime running with...
[mono-project.git] / mono / mini / aot-runtime.c
blob46f5cd38a6a41b8bed223ccb720cd733a32f7462
1 /**
2 * \file
3 * mono Ahead of Time compiler
4 *
5 * Author:
6 * Dietmar Maurer (dietmar@ximian.com)
7 * Zoltan Varga (vargaz@gmail.com)
8 *
9 * (C) 2002 Ximian, Inc.
10 * Copyright 2003-2011 Novell, Inc.
11 * Copyright 2011 Xamarin, Inc.
12 * Licensed under the MIT license. See LICENSE file in the project root for full license information.
13 */
14
15 #include "config.h"
16 #include <sys/types.h>
17 #ifdef HAVE_UNISTD_H
18 #include <unistd.h>
19 #endif
20 #include <fcntl.h>
21 #include <string.h>
22 #ifdef HAVE_SYS_MMAN_H
23 #include <sys/mman.h>
24 #endif
25
26 #if HOST_WIN32
27 #include <winsock2.h>
28 #include <windows.h>
29 #endif
30
31 #ifdef HAVE_EXECINFO_H
32 #include <execinfo.h>
33 #endif
34
35 #include <errno.h>
36 #include <sys/stat.h>
37
38 #ifdef HAVE_SYS_WAIT_H
39 #include <sys/wait.h> /* for WIFEXITED, WEXITSTATUS */
40 #endif
41
42 #include <mono/metadata/abi-details.h>
43 #include <mono/metadata/tabledefs.h>
44 #include <mono/metadata/class.h>
45 #include <mono/metadata/object.h>
46 #include <mono/metadata/tokentype.h>
47 #include <mono/metadata/appdomain.h>
48 #include <mono/metadata/debug-helpers.h>
49 #include <mono/metadata/assembly.h>
50 #include <mono/metadata/assembly-internals.h>
51 #include <mono/metadata/metadata-internals.h>
52 #include <mono/metadata/exception-internals.h>
53 #include <mono/metadata/marshal.h>
54 #include <mono/metadata/gc-internals.h>
55 #include <mono/metadata/threads-types.h>
56 #include <mono/metadata/mono-endian.h>
57 #include <mono/utils/mono-logger-internals.h>
58 #include <mono/utils/mono-mmap.h>
59 #include <mono/utils/mono-compiler.h>
60 #include <mono/utils/mono-counters.h>
61 #include <mono/utils/mono-digest.h>
62 #include <mono/utils/mono-threads-coop.h>
63
64 #include "mini.h"
65 #include "seq-points.h"
66 #include "version.h"
67 #include "debugger-agent.h"
68 #include "aot-compiler.h"
69 #include "aot-runtime.h"
70 #include "jit-icalls.h"
71 #include "mini-runtime.h"
72
73 #ifndef DISABLE_AOT
74
75 #ifdef TARGET_OSX
76 #define ENABLE_AOT_CACHE
77 #endif
78
79 /* Number of got entries shared between the JIT and LLVM GOT */
80 #define N_COMMON_GOT_ENTRIES 10
81
82 #define ROUND_DOWN(VALUE,SIZE) ((VALUE) & ~((SIZE) - 1))
83
84 typedef struct {
85 int method_index;
86 MonoJitInfo *jinfo;
87 } JitInfoMap;
88
89 typedef struct MonoAotModule {
90 char *aot_name;
91 /* Pointer to the Global Offset Table */
92 gpointer *got;
93 gpointer *llvm_got;
94 gpointer *shared_got;
95 GHashTable *name_cache;
96 GHashTable *extra_methods;
97 /* Maps methods to their code */
98 GHashTable *method_to_code;
99 /* Maps pointers into the method info to the methods themselves */
100 GHashTable *method_ref_to_method;
101 MonoAssemblyName *image_names;
102 char **image_guids;
103 MonoAssembly *assembly;
104 MonoImage **image_table;
105 guint32 image_table_len;
106 gboolean out_of_date;
107 gboolean plt_inited;
108 gboolean got_initializing;
109 guint8 *mem_begin;
110 guint8 *mem_end;
111 guint8 *jit_code_start;
112 guint8 *jit_code_end;
113 guint8 *llvm_code_start;
114 guint8 *llvm_code_end;
115 guint8 *plt;
116 guint8 *plt_end;
117 guint8 *blob;
118 gpointer weak_field_indexes;
119 /* Maps method indexes to their code */
120 gpointer *methods;
121 /* Sorted array of method addresses */
122 gpointer *sorted_methods;
123 /* Method indexes for each method in sorted_methods */
124 int *sorted_method_indexes;
125 /* The length of the two tables above */
126 int sorted_methods_len;
127 guint32 *method_info_offsets;
128 guint32 *ex_info_offsets;
129 guint32 *class_info_offsets;
130 guint32 *got_info_offsets;
131 guint32 *llvm_got_info_offsets;
132 guint32 *methods_loaded;
133 guint16 *class_name_table;
134 guint32 *extra_method_table;
135 guint32 *extra_method_info_offsets;
136 guint32 *unbox_trampolines;
137 guint32 *unbox_trampolines_end;
138 guint32 *unbox_trampoline_addresses;
139 guint8 *unwind_info;
140
141 /* Points to the mono EH data created by LLVM */
142 guint8 *mono_eh_frame;
143
144 /* Points to the data tables if MONO_AOT_FILE_FLAG_SEPARATE_DATA is set */
145 gpointer tables [MONO_AOT_TABLE_NUM];
146 /* Points to the trampolines */
147 guint8 *trampolines [MONO_AOT_TRAMP_NUM];
148 /* The first unused trampoline of each kind */
149 guint32 trampoline_index [MONO_AOT_TRAMP_NUM];
150
151 gboolean use_page_trampolines;
152
153 MonoAotFileInfo info;
154
155 gpointer *globals;
156 MonoDl *sofile;
157
158 JitInfoMap *async_jit_info_table;
159 mono_mutex_t mutex;
160 } MonoAotModule;
161
162 typedef struct {
163 void *next;
164 unsigned char *trampolines;
165 unsigned char *trampolines_end;
166 } TrampolinePage;
167
168 static GHashTable *aot_modules;
169 #define mono_aot_lock() mono_os_mutex_lock (&aot_mutex)
170 #define mono_aot_unlock() mono_os_mutex_unlock (&aot_mutex)
171 static mono_mutex_t aot_mutex;
172
173 /*
174 * Maps assembly names to the mono_aot_module_<NAME>_info symbols in the
175 * AOT modules registered by mono_aot_register_module ().
176 */
177 static GHashTable *static_aot_modules;
178 /*
179 * Same as above, but tracks module that must be loaded before others are
180 * This allows us to have a "container" module which contains resources for
181 * other modules. Since it doesn't provide methods for a managed assembly,
182 * and it needs to be fully loaded by the time the other code needs it, it
183 * must be eagerly loaded before other modules.
184 */
185 static char *container_assm_name = NULL;
186 static MonoAotModule *container_amodule = NULL;
187
188 /*
189 * Maps MonoJitInfo* to the aot module they belong to, this can be different
190 * from ji->method->klass->image's aot module for generic instances.
191 */
192 static GHashTable *ji_to_amodule;
193
194 /*
195 * Whenever to AOT compile loaded assemblies on demand and store them in
196 * a cache.
197 */
198 static gboolean enable_aot_cache = FALSE;
199
200 static gboolean mscorlib_aot_loaded;
201
202 /* For debugging */
203 static gint32 mono_last_aot_method = -1;
204
205 static gboolean make_unreadable = FALSE;
206 static guint32 name_table_accesses = 0;
207 static guint32 n_pagefaults = 0;
208
209 /* Used to speed-up find_aot_module () */
210 static gsize aot_code_low_addr = (gssize)-1;
211 static gsize aot_code_high_addr = 0;
212
213 /* Stats */
214 static gint32 async_jit_info_size;
215
216 static GHashTable *aot_jit_icall_hash;
217
218 #ifdef MONOTOUCH
219 #define USE_PAGE_TRAMPOLINES ((MonoAotModule*)mono_defaults.corlib->aot_module)->use_page_trampolines
220 #else
221 #define USE_PAGE_TRAMPOLINES 0
222 #endif
223
224 #define mono_aot_page_lock() mono_os_mutex_lock (&aot_page_mutex)
225 #define mono_aot_page_unlock() mono_os_mutex_unlock (&aot_page_mutex)
226 static mono_mutex_t aot_page_mutex;
227
228 static MonoAotModule *mscorlib_aot_module;
229
230 /* Embedding API hooks to load the AOT data for AOT images compiled with MONO_AOT_FILE_FLAG_SEPARATE_DATA */
231 static MonoLoadAotDataFunc aot_data_load_func;
232 static MonoFreeAotDataFunc aot_data_free_func;
233 static gpointer aot_data_func_user_data;
234
235 static void
236 init_plt (MonoAotModule *info);
237
238 static void
239 compute_llvm_code_range (MonoAotModule *amodule, guint8 **code_start, guint8 **code_end);
240
241 static gboolean
242 init_method (MonoAotModule *amodule, guint32 method_index, MonoMethod *method, MonoClass *init_class, MonoGenericContext *context, MonoError *error);
243
244 static MonoJumpInfo*
245 decode_patches (MonoAotModule *amodule, MonoMemPool *mp, int n_patches, gboolean llvm, guint32 *got_offsets);
246
247 static inline void
248 amodule_lock (MonoAotModule *amodule)
249 {
250 mono_os_mutex_lock (&amodule->mutex);
251 }
252
253 static inline void
254 amodule_unlock (MonoAotModule *amodule)
255 {
256 mono_os_mutex_unlock (&amodule->mutex);
257 }
258
259 /*
260 * load_image:
261 *
262 * Load one of the images referenced by AMODULE. Returns NULL if the image is not
263 * found, and sets @error for what happened
264 */
265 static MonoImage *
266 load_image (MonoAotModule *amodule, int index, MonoError *error)
267 {
268 MonoAssembly *assembly;
269 MonoImageOpenStatus status;
270
271 g_assert (index < amodule->image_table_len);
272
273 error_init (error);
274
275 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT: module %s wants to load image %d: %s", amodule->aot_name, index, amodule->image_names[index].name);
276
277 if (amodule->image_table [index])
278 return amodule->image_table [index];
279 if (amodule->out_of_date) {
280 mono_error_set_bad_image_by_name (error, amodule->aot_name, "Image out of date");
281 return NULL;
282 }
283
284 /*
285 * LoadFile allows loading more than one assembly with the same name.
286 * That means that just calling mono_assembly_load is unlikely to find
287 * the correct assembly (it'll just return the first one loaded). But
288 * we shouldn't hardcode the full assembly filepath into the AOT image,
289 * so it's not obvious that we can call mono_assembly_open_predicate.
290 *
291 * In the JIT, an assembly opened with LoadFile is supposed to only
292 * refer to already-loaded assemblies (or to GAC & MONO_PATH)
293 * assemblies - so nothing new should be loading. And for the
294 * LoadFile'd assembly itself, we can check if the name and guid of the
295 * current AOT module matches the wanted name and guid and just return
296 * the AOT module's assembly.
297 */
298 if (mono_asmctx_get_kind (&amodule->assembly->context) == MONO_ASMCTX_INDIVIDUAL &&
299 !strcmp (amodule->assembly->image->guid, amodule->image_guids [index]) &&
300 mono_assembly_names_equal (&amodule->image_names [index], &amodule->assembly->aname))
301 assembly = amodule->assembly;
302 else
303 assembly = mono_assembly_load (&amodule->image_names [index], amodule->assembly->basedir, &status);
304 if (!assembly) {
305 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);
306 mono_error_set_bad_image_by_name (error, amodule->aot_name, "module is unusable because dependency %s is not found (error %d).\n", amodule->image_names [index].name, status);
307 amodule->out_of_date = TRUE;
308 return NULL;
309 }
310
311 if (strcmp (assembly->image->guid, amodule->image_guids [index])) {
312 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);
313 mono_error_set_bad_image_by_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);
314 amodule->out_of_date = TRUE;
315 return NULL;
316 }
317
318 amodule->image_table [index] = assembly->image;
319 return assembly->image;
320 }
321
322 static inline gint32
323 decode_value (guint8 *ptr, guint8 **rptr)
324 {
325 guint8 b = *ptr;
326 gint32 len;
327
328 if ((b & 0x80) == 0){
329 len = b;
330 ++ptr;
331 } else if ((b & 0x40) == 0){
332 len = ((b & 0x3f) << 8 | ptr [1]);
333 ptr += 2;
334 } else if (b != 0xff) {
335 len = ((b & 0x1f) << 24) |
336 (ptr [1] << 16) |
337 (ptr [2] << 8) |
338 ptr [3];
339 ptr += 4;
340 }
341 else {
342 len = (ptr [1] << 24) | (ptr [2] << 16) | (ptr [3] << 8) | ptr [4];
343 ptr += 5;
344 }
345 if (rptr)
346 *rptr = ptr;
347
348 //printf ("DECODE: %d.\n", len);
349 return len;
350 }
351
352 /*
353 * mono_aot_get_offset:
354 *
355 * Decode an offset table emitted by emit_offset_table (), returning the INDEXth
356 * entry.
357 */
358 static guint32
359 mono_aot_get_offset (guint32 *table, int index)
360 {
361 int i, group, ngroups, index_entry_size;
362 int start_offset, offset, group_size;
363 guint8 *data_start, *p;
364 guint32 *index32 = NULL;
365 guint16 *index16 = NULL;
366
367 /* noffsets = table [0]; */
368 group_size = table [1];
369 ngroups = table [2];
370 index_entry_size = table [3];
371 group = index / group_size;
372
373 if (index_entry_size == 2) {
374 index16 = (guint16*)&table [4];
375 data_start = (guint8*)&index16 [ngroups];
376 p = data_start + index16 [group];
377 } else {
378 index32 = (guint32*)&table [4];
379 data_start = (guint8*)&index32 [ngroups];
380 p = data_start + index32 [group];
381 }
382
383 /* offset will contain the value of offsets [group * group_size] */
384 offset = start_offset = decode_value (p, &p);
385 for (i = group * group_size + 1; i <= index; ++i) {
386 offset += decode_value (p, &p);
387 }
388
389 //printf ("Offset lookup: %d -> %d, start=%d, p=%d\n", index, offset, start_offset, table [3 + group]);
390
391 return offset;
392 }
393
394 static MonoMethod*
395 decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf, MonoError *error);
396
397 static MonoClass*
398 decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf, MonoError *error);
399
400 static MonoType*
401 decode_type (MonoAotModule *module, guint8 *buf, guint8 **endbuf, MonoError *error);
402
403 static MonoGenericInst*
404 decode_generic_inst (MonoAotModule *module, guint8 *buf, guint8 **endbuf, MonoError *error)
405 {
406 int type_argc, i;
407 MonoType **type_argv;
408 MonoGenericInst *inst;
409 guint8 *p = buf;
410
411 error_init (error);
412 type_argc = decode_value (p, &p);
413 type_argv = g_new0 (MonoType*, type_argc);
414
415 for (i = 0; i < type_argc; ++i) {
416 MonoClass *pclass = decode_klass_ref (module, p, &p, error);
417 if (!pclass) {
418 g_free (type_argv);
419 return NULL;
420 }
421 type_argv [i] = m_class_get_byval_arg (pclass);
422 }
423
424 inst = mono_metadata_get_generic_inst (type_argc, type_argv);
425 g_free (type_argv);
426
427 *endbuf = p;
428
429 return inst;
430 }
431
432 static gboolean
433 decode_generic_context (MonoAotModule *module, MonoGenericContext *ctx, guint8 *buf, guint8 **endbuf, MonoError *error)
434 {
435 guint8 *p = buf;
436 guint8 *p2;
437 int argc;
438 error_init (error);
439
440 p2 = p;
441 argc = decode_value (p, &p);
442 if (argc) {
443 p = p2;
444 ctx->class_inst = decode_generic_inst (module, p, &p, error);
445 if (!ctx->class_inst)
446 return FALSE;
447 }
448 p2 = p;
449 argc = decode_value (p, &p);
450 if (argc) {
451 p = p2;
452 ctx->method_inst = decode_generic_inst (module, p, &p, error);
453 if (!ctx->method_inst)
454 return FALSE;
455 }
456
457 *endbuf = p;
458 return TRUE;
459 }
460
461 static MonoClass*
462 decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf, MonoError *error)
463 {
464 MonoImage *image;
465 MonoClass *klass = NULL, *eklass;
466 guint32 token, rank, idx;
467 guint8 *p = buf;
468 int reftype;
469
470 error_init (error);
471 reftype = decode_value (p, &p);
472 if (reftype == 0) {
473 *endbuf = p;
474 mono_error_set_bad_image_by_name (error, module->aot_name, "Decoding a null class ref");
475 return NULL;
476 }
477
478 switch (reftype) {
479 case MONO_AOT_TYPEREF_TYPEDEF_INDEX:
480 idx = decode_value (p, &p);
481 image = load_image (module, 0, error);
482 if (!image)
483 return NULL;
484 klass = mono_class_get_checked (image, MONO_TOKEN_TYPE_DEF + idx, error);
485 break;
486 case MONO_AOT_TYPEREF_TYPEDEF_INDEX_IMAGE:
487 idx = decode_value (p, &p);
488 image = load_image (module, decode_value (p, &p), error);
489 if (!image)
490 return NULL;
491 klass = mono_class_get_checked (image, MONO_TOKEN_TYPE_DEF + idx, error);
492 break;
493 case MONO_AOT_TYPEREF_TYPESPEC_TOKEN:
494 token = decode_value (p, &p);
495 image = module->assembly->image;
496 if (!image) {
497 mono_error_set_bad_image_by_name (error, module->aot_name, "No image associated with the aot module");
498 return NULL;
499 }
500 klass = mono_class_get_checked (image, token, error);
501 break;
502 case MONO_AOT_TYPEREF_GINST: {
503 MonoClass *gclass;
504 MonoGenericContext ctx;
505 MonoType *type;
506
507 gclass = decode_klass_ref (module, p, &p, error);
508 if (!gclass)
509 return NULL;
510 g_assert (mono_class_is_gtd (gclass));
511
512 memset (&ctx, 0, sizeof (ctx));
513 ctx.class_inst = decode_generic_inst (module, p, &p, error);
514 if (!ctx.class_inst)
515 return NULL;
516 type = mono_class_inflate_generic_type_checked (m_class_get_byval_arg (gclass), &ctx, error);
517 if (!type)
518 return NULL;
519 klass = mono_class_from_mono_type (type);
520 mono_metadata_free_type (type);
521 break;
522 }
523 case MONO_AOT_TYPEREF_VAR: {
524 MonoType *t = NULL;
525 MonoGenericContainer *container = NULL;
526 gboolean has_constraint = decode_value (p, &p);
527
528 if (has_constraint) {
529 MonoClass *par_klass;
530 MonoType *gshared_constraint;
531
532 gshared_constraint = decode_type (module, p, &p, error);
533 if (!gshared_constraint)
534 return NULL;
535
536 par_klass = decode_klass_ref (module, p, &p, error);
537 if (!par_klass)
538 return NULL;
539
540 t = mini_get_shared_gparam (m_class_get_byval_arg (par_klass), gshared_constraint);
541 mono_metadata_free_type (gshared_constraint);
542 klass = mono_class_from_mono_type (t);
543 } else {
544 int type = decode_value (p, &p);
545 int num = decode_value (p, &p);
546 gboolean is_not_anonymous = decode_value (p, &p);
547
548 if (is_not_anonymous) {
549 gboolean is_method = decode_value (p, &p);
550
551 if (is_method) {
552 MonoMethod *method_def;
553 g_assert (type == MONO_TYPE_MVAR);
554 method_def = decode_resolve_method_ref (module, p, &p, error);
555 if (!method_def)
556 return NULL;
557
558 container = mono_method_get_generic_container (method_def);
559 } else {
560 MonoClass *class_def;
561 g_assert (type == MONO_TYPE_VAR);
562 class_def = decode_klass_ref (module, p, &p, error);
563 if (!class_def)
564 return NULL;
565
566 container = mono_class_try_get_generic_container (class_def); //FIXME is this a case for a try_get?
567 }
568 } else {
569 // We didn't decode is_method, so we have to infer it from type enum.
570 container = mono_get_anonymous_container_for_image (module->assembly->image, type == MONO_TYPE_MVAR);
571 }
572
573 t = g_new0 (MonoType, 1);
574 t->type = (MonoTypeEnum)type;
575 if (is_not_anonymous) {
576 t->data.generic_param = mono_generic_container_get_param (container, num);
577 } else {
578 /* Anonymous */
579 MonoGenericParam *par = mono_metadata_create_anon_gparam (module->assembly->image, num, type == MONO_TYPE_MVAR);
580 t->data.generic_param = par;
581 // FIXME: maybe do this for all anon gparams?
582 ((MonoGenericParamFull*)par)->info.name = mono_make_generic_name_string (module->assembly->image, num);
583 }
584 // FIXME: Maybe use types directly to avoid
585 // the overhead of creating MonoClass-es
586 klass = mono_class_from_mono_type (t);
587
588 g_free (t);
589 }
590 break;
591 }
592 case MONO_AOT_TYPEREF_ARRAY:
593 /* Array */
594 rank = decode_value (p, &p);
595 eklass = decode_klass_ref (module, p, &p, error);
596 if (!eklass)
597 return NULL;
598 klass = mono_class_create_array (eklass, rank);
599 break;
600 case MONO_AOT_TYPEREF_PTR: {
601 MonoType *t;
602
603 t = decode_type (module, p, &p, error);
604 if (!t)
605 return NULL;
606 klass = mono_class_from_mono_type (t);
607 g_free (t);
608 break;
609 }
610 case MONO_AOT_TYPEREF_BLOB_INDEX: {
611 guint32 offset = decode_value (p, &p);
612 guint8 *p2;
613
614 p2 = module->blob + offset;
615 klass = decode_klass_ref (module, p2, &p2, error);
616 break;
617 }
618 default:
619 mono_error_set_bad_image_by_name (error, module->aot_name, "Invalid klass reftype %d", reftype);
620 }
621 //g_assert (klass);
622 //printf ("BLA: %s\n", mono_type_full_name (m_class_get_byval_arg (klass)));
623 *endbuf = p;
624 return klass;
625 }
626
627 static MonoClassField*
628 decode_field_info (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
629 {
630 ERROR_DECL (error);
631 MonoClass *klass = decode_klass_ref (module, buf, &buf, error);
632 guint32 token;
633 guint8 *p = buf;
634
635 if (!klass) {
636 mono_error_cleanup (error); /* FIXME don't swallow the error */
637 return NULL;
638 }
639
640 token = MONO_TOKEN_FIELD_DEF + decode_value (p, &p);
641
642 *endbuf = p;
643
644 return mono_class_get_field (klass, token);
645 }
646
647 /*
648 * Parse a MonoType encoded by encode_type () in aot-compiler.c. Return malloc-ed
649 * memory.
650 */
651 static MonoType*
652 decode_type (MonoAotModule *module, guint8 *buf, guint8 **endbuf, MonoError *error)
653 {
654 guint8 *p = buf;
655 MonoType *t;
656
657 // In encode_type, we have g_assert (!t->has_mods);
658 // This is the only reason we can do sizeof (MonoType)
659 t = (MonoType *) g_malloc0 (sizeof (MonoType));
660 error_init (error);
661
662 while (TRUE) {
663 if (*p == MONO_TYPE_PINNED) {
664 t->pinned = TRUE;
665 ++p;
666 } else if (*p == MONO_TYPE_BYREF) {
667 t->byref = TRUE;
668 ++p;
669 } else {
670 break;
671 }
672 }
673
674 t->type = (MonoTypeEnum)*p;
675 ++p;
676
677 switch (t->type) {
678 case MONO_TYPE_VOID:
679 case MONO_TYPE_BOOLEAN:
680 case MONO_TYPE_CHAR:
681 case MONO_TYPE_I1:
682 case MONO_TYPE_U1:
683 case MONO_TYPE_I2:
684 case MONO_TYPE_U2:
685 case MONO_TYPE_I4:
686 case MONO_TYPE_U4:
687 case MONO_TYPE_I8:
688 case MONO_TYPE_U8:
689 case MONO_TYPE_R4:
690 case MONO_TYPE_R8:
691 case MONO_TYPE_I:
692 case MONO_TYPE_U:
693 case MONO_TYPE_STRING:
694 case MONO_TYPE_OBJECT:
695 case MONO_TYPE_TYPEDBYREF:
696 break;
697 case MONO_TYPE_VALUETYPE:
698 case MONO_TYPE_CLASS:
699 t->data.klass = decode_klass_ref (module, p, &p, error);
700 if (!t->data.klass)
701 goto fail;
702 break;
703 case MONO_TYPE_SZARRAY:
704 t->data.klass = decode_klass_ref (module, p, &p, error);
705
706 if (!t->data.klass)
707 goto fail;
708 break;
709 case MONO_TYPE_PTR:
710 t->data.type = decode_type (module, p, &p, error);
711 if (!t->data.type)
712 goto fail;
713 break;
714 case MONO_TYPE_GENERICINST: {
715 MonoClass *gclass;
716 MonoGenericContext ctx;
717 MonoType *type;
718 MonoClass *klass;
719
720 gclass = decode_klass_ref (module, p, &p, error);
721 if (!gclass)
722 goto fail;
723 g_assert (mono_class_is_gtd (gclass));
724
725 memset (&ctx, 0, sizeof (ctx));
726 ctx.class_inst = decode_generic_inst (module, p, &p, error);
727 if (!ctx.class_inst)
728 goto fail;
729 type = mono_class_inflate_generic_type_checked (m_class_get_byval_arg (gclass), &ctx, error);
730 if (!type)
731 goto fail;
732 klass = mono_class_from_mono_type (type);
733 t->data.generic_class = mono_class_get_generic_class (klass);
734 break;
735 }
736 case MONO_TYPE_ARRAY: {
737 MonoArrayType *array;
738 int i;
739
740 // FIXME: memory management
741 array = g_new0 (MonoArrayType, 1);
742 array->eklass = decode_klass_ref (module, p, &p, error);
743 if (!array->eklass)
744 goto fail;
745 array->rank = decode_value (p, &p);
746 array->numsizes = decode_value (p, &p);
747
748 if (array->numsizes)
749 array->sizes = (int *)g_malloc0 (sizeof (int) * array->numsizes);
750 for (i = 0; i < array->numsizes; ++i)
751 array->sizes [i] = decode_value (p, &p);
752
753 array->numlobounds = decode_value (p, &p);
754 if (array->numlobounds)
755 array->lobounds = (int *)g_malloc0 (sizeof (int) * array->numlobounds);
756 for (i = 0; i < array->numlobounds; ++i)
757 array->lobounds [i] = decode_value (p, &p);
758 t->data.array = array;
759 break;
760 }
761 case MONO_TYPE_VAR:
762 case MONO_TYPE_MVAR: {
763 MonoClass *klass = decode_klass_ref (module, p, &p, error);
764 if (!klass)
765 goto fail;
766 t->data.generic_param = m_class_get_byval_arg (klass)->data.generic_param;
767 break;
768 }
769 default:
770 mono_error_set_bad_image_by_name (error, module->aot_name, "Invalid encoded type %d", t->type);
771 goto fail;
772 }
773
774 *endbuf = p;
775
776 return t;
777 fail:
778 g_free (t);
779 return NULL;
780 }
781
782 // FIXME: Error handling, memory management
783
784 static MonoMethodSignature*
785 decode_signature_with_target (MonoAotModule *module, MonoMethodSignature *target, guint8 *buf, guint8 **endbuf)
786 {
787 ERROR_DECL (error);
788 MonoMethodSignature *sig;
789 guint32 flags;
790 int i, gen_param_count = 0, param_count, call_conv;
791 guint8 *p = buf;
792 gboolean hasthis, explicit_this, has_gen_params;
793
794 flags = *p;
795 p ++;
796 has_gen_params = (flags & 0x10) != 0;
797 hasthis = (flags & 0x20) != 0;
798 explicit_this = (flags & 0x40) != 0;
799 call_conv = flags & 0x0F;
800
801 if (has_gen_params)
802 gen_param_count = decode_value (p, &p);
803 param_count = decode_value (p, &p);
804 if (target && param_count != target->param_count)
805 return NULL;
806 sig = (MonoMethodSignature *)g_malloc0 (MONO_SIZEOF_METHOD_SIGNATURE + param_count * sizeof (MonoType *));
807 sig->param_count = param_count;
808 sig->sentinelpos = -1;
809 sig->hasthis = hasthis;
810 sig->explicit_this = explicit_this;
811 sig->call_convention = call_conv;
812 sig->generic_param_count = gen_param_count;
813 sig->ret = decode_type (module, p, &p, error);
814 if (!sig->ret)
815 goto fail;
816 for (i = 0; i < param_count; ++i) {
817 if (*p == MONO_TYPE_SENTINEL) {
818 g_assert (sig->call_convention == MONO_CALL_VARARG);
819 sig->sentinelpos = i;
820 p ++;
821 }
822 sig->params [i] = decode_type (module, p, &p, error);
823 if (!sig->params [i])
824 goto fail;
825 }
826
827 if (sig->call_convention == MONO_CALL_VARARG && sig->sentinelpos == -1)
828 sig->sentinelpos = sig->param_count;
829
830 *endbuf = p;
831
832 return sig;
833 fail:
834 mono_error_cleanup (error); /* FIXME don't swallow the error */
835 g_free (sig);
836 return NULL;
837 }
838
839 static MonoMethodSignature*
840 decode_signature (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
841 {
842 return decode_signature_with_target (module, NULL, buf, endbuf);
843 }
844
845 static gboolean
846 sig_matches_target (MonoAotModule *module, MonoMethod *target, guint8 *buf, guint8 **endbuf)
847 {
848 MonoMethodSignature *sig;
849 gboolean res;
850 guint8 *p = buf;
851
852 sig = decode_signature_with_target (module, mono_method_signature (target), p, &p);
853 res = sig && mono_metadata_signature_equal (mono_method_signature (target), sig);
854 g_free (sig);
855 *endbuf = p;
856 return res;
857 }
858
859 /* Stores information returned by decode_method_ref () */
860 typedef struct {
861 MonoImage *image;
862 guint32 token;
863 MonoMethod *method;
864 gboolean no_aot_trampoline;
865 } MethodRef;
866
867 /*
868 * decode_method_ref_with_target:
869 *
870 * Decode a method reference, storing the image/token into a MethodRef structure.
871 * This avoids loading metadata for the method if the caller does not need it. If the method has
872 * no token, then it is loaded from metadata and ref->method is set to the method instance.
873 * If TARGET is non-NULL, abort decoding if it can be determined that the decoded method
874 * couldn't resolve to TARGET, and return FALSE.
875 * There are some kinds of method references which only support a non-null TARGET.
876 * This means that its not possible to decode this into a method, only to check
877 * that the method reference matches a given method. This is normally not a problem
878 * as these wrappers only occur in the extra_methods table, where we already have
879 * a method we want to lookup.
880 *
881 * If there was a decoding error, we return FALSE and set @error
882 */
883 static gboolean
884 decode_method_ref_with_target (MonoAotModule *module, MethodRef *ref, MonoMethod *target, guint8 *buf, guint8 **endbuf, MonoError *error)
885 {
886 guint32 image_index, value;
887 MonoImage *image = NULL;
888 guint8 *p = buf;
889
890 memset (ref, 0, sizeof (MethodRef));
891 error_init (error);
892
893 value = decode_value (p, &p);
894 image_index = value >> 24;
895
896 if (image_index == MONO_AOT_METHODREF_NO_AOT_TRAMPOLINE) {
897 ref->no_aot_trampoline = TRUE;
898 value = decode_value (p, &p);
899 image_index = value >> 24;
900 }
901
902 if (image_index < MONO_AOT_METHODREF_MIN || image_index == MONO_AOT_METHODREF_METHODSPEC || image_index == MONO_AOT_METHODREF_GINST) {
903 if (target && target->wrapper_type) {
904 return FALSE;
905 }
906 }
907
908 if (image_index == MONO_AOT_METHODREF_WRAPPER) {
909 WrapperInfo *info;
910 guint32 wrapper_type;
911
912 wrapper_type = decode_value (p, &p);
913
914 if (target && target->wrapper_type != wrapper_type)
915 return FALSE;
916
917 /* Doesn't matter */
918 image = mono_defaults.corlib;
919
920 switch (wrapper_type) {
921 #ifndef DISABLE_REMOTING
922 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK: {
923 MonoMethod *m = decode_resolve_method_ref (module, p, &p, error);
924 if (!m)
925 return FALSE;
926 mono_class_init (m->klass);
927 if (mono_aot_only)
928 ref->method = m;
929 else {
930 ref->method = mono_marshal_get_remoting_invoke_with_check (m, error);
931 return_val_if_nok (error, FALSE);
932 }
933 break;
934 }
935 case MONO_WRAPPER_PROXY_ISINST: {
936 MonoClass *klass = decode_klass_ref (module, p, &p, error);
937 if (!klass)
938 return FALSE;
939 ref->method = mono_marshal_get_proxy_cancast (klass);
940 break;
941 }
942 case MONO_WRAPPER_LDFLD:
943 case MONO_WRAPPER_LDFLDA:
944 case MONO_WRAPPER_STFLD: {
945 MonoClass *klass = decode_klass_ref (module, p, &p, error);
946 if (!klass)
947 return FALSE;
948 MonoType *type = m_class_get_byval_arg (klass);
949 if (wrapper_type == MONO_WRAPPER_LDFLD)
950 ref->method = mono_marshal_get_ldfld_wrapper (type);
951 else if (wrapper_type == MONO_WRAPPER_LDFLDA)
952 ref->method = mono_marshal_get_ldflda_wrapper (type);
953 else if (wrapper_type == MONO_WRAPPER_STFLD)
954 ref->method = mono_marshal_get_stfld_wrapper (type);
955 else {
956 mono_error_set_bad_image_by_name (error, module->aot_name, "Unknown AOT wrapper type %d", wrapper_type);
957 return FALSE;
958 }
959 break;
960 }
961 #endif
962 case MONO_WRAPPER_ALLOC: {
963 int atype = decode_value (p, &p);
964 ManagedAllocatorVariant variant =
965 mono_profiler_allocations_enabled () ?
966 MANAGED_ALLOCATOR_PROFILER : MANAGED_ALLOCATOR_REGULAR;
967
968 ref->method = mono_gc_get_managed_allocator_by_type (atype, variant);
969 /* Try to fallback to the slow path version */
970 if (!ref->method)
971 ref->method = mono_gc_get_managed_allocator_by_type (atype, MANAGED_ALLOCATOR_SLOW_PATH);
972 if (!ref->method) {
973 mono_error_set_bad_image_by_name (error, module->aot_name, "Error: No managed allocator, but we need one for AOT.\nAre you using non-standard GC options?\n");
974 return FALSE;
975 }
976 break;
977 }
978 case MONO_WRAPPER_WRITE_BARRIER: {
979 ref->method = mono_gc_get_write_barrier ();
980 break;
981 }
982 case MONO_WRAPPER_STELEMREF: {
983 int subtype = decode_value (p, &p);
984
985 if (subtype == WRAPPER_SUBTYPE_NONE) {
986 ref->method = mono_marshal_get_stelemref ();
987 } else if (subtype == WRAPPER_SUBTYPE_VIRTUAL_STELEMREF) {
988 int kind;
989
990 kind = decode_value (p, &p);
991
992 /* Can't decode this */
993 if (!target)
994 return FALSE;
995 if (target->wrapper_type == MONO_WRAPPER_STELEMREF) {
996 info = mono_marshal_get_wrapper_info (target);
997
998 g_assert (info);
999 if (info->subtype == subtype && info->d.virtual_stelemref.kind == kind)
1000 ref->method = target;
1001 else
1002 return FALSE;
1003 } else {
1004 return FALSE;
1005 }
1006 } else {
1007 mono_error_set_bad_image_by_name (error, module->aot_name, "Invalid STELEMREF subtype %d", subtype);
1008 return FALSE;
1009 }
1010 break;
1011 }
1012 case MONO_WRAPPER_SYNCHRONIZED: {
1013 MonoMethod *m = decode_resolve_method_ref (module, p, &p, error);
1014 if (!m)
1015 return FALSE;
1016 ref->method = mono_marshal_get_synchronized_wrapper (m);
1017 break;
1018 }
1019 case MONO_WRAPPER_UNKNOWN: {
1020 int subtype = decode_value (p, &p);
1021
1022 if (subtype == WRAPPER_SUBTYPE_PTR_TO_STRUCTURE || subtype == WRAPPER_SUBTYPE_STRUCTURE_TO_PTR) {
1023 MonoClass *klass = decode_klass_ref (module, p, &p, error);
1024 if (!klass)
1025 return FALSE;
1026
1027 if (!target)
1028 return FALSE;
1029 if (klass != target->klass)
1030 return FALSE;
1031
1032 if (subtype == WRAPPER_SUBTYPE_PTR_TO_STRUCTURE) {
1033 if (strcmp (target->name, "PtrToStructure"))
1034 return FALSE;
1035 ref->method = mono_marshal_get_ptr_to_struct (klass);
1036 } else {
1037 if (strcmp (target->name, "StructureToPtr"))
1038 return FALSE;
1039 ref->method = mono_marshal_get_struct_to_ptr (klass);
1040 }
1041 } else if (subtype == WRAPPER_SUBTYPE_SYNCHRONIZED_INNER) {
1042 MonoMethod *m = decode_resolve_method_ref (module, p, &p, error);
1043 if (!m)
1044 return FALSE;
1045 ref->method = mono_marshal_get_synchronized_inner_wrapper (m);
1046 } else if (subtype == WRAPPER_SUBTYPE_ARRAY_ACCESSOR) {
1047 MonoMethod *m = decode_resolve_method_ref (module, p, &p, error);
1048 if (!m)
1049 return FALSE;
1050 ref->method = mono_marshal_get_array_accessor_wrapper (m);
1051 } else if (subtype == WRAPPER_SUBTYPE_GSHAREDVT_IN) {
1052 ref->method = mono_marshal_get_gsharedvt_in_wrapper ();
1053 } else if (subtype == WRAPPER_SUBTYPE_GSHAREDVT_OUT) {
1054 ref->method = mono_marshal_get_gsharedvt_out_wrapper ();
1055 } else if (subtype == WRAPPER_SUBTYPE_INTERP_IN) {
1056 MonoMethodSignature *sig = decode_signature (module, p, &p);
1057 if (!sig)
1058 return FALSE;
1059 ref->method = mini_get_interp_in_wrapper (sig);
1060 } else if (subtype == WRAPPER_SUBTYPE_INTERP_LMF) {
1061 ref->method = mini_get_interp_lmf_wrapper ();
1062 } else if (subtype == WRAPPER_SUBTYPE_GSHAREDVT_IN_SIG) {
1063 MonoMethodSignature *sig = decode_signature (module, p, &p);
1064 if (!sig)
1065 return FALSE;
1066 ref->method = mini_get_gsharedvt_in_sig_wrapper (sig);
1067 } else if (subtype == WRAPPER_SUBTYPE_GSHAREDVT_OUT_SIG) {
1068 MonoMethodSignature *sig = decode_signature (module, p, &p);
1069 if (!sig)
1070 return FALSE;
1071 ref->method = mini_get_gsharedvt_out_sig_wrapper (sig);
1072 } else {
1073 mono_error_set_bad_image_by_name (error, module->aot_name, "Invalid UNKNOWN wrapper subtype %d", subtype);
1074 return FALSE;
1075 }
1076 break;
1077 }
1078 case MONO_WRAPPER_MANAGED_TO_MANAGED: {
1079 int subtype = decode_value (p, &p);
1080
1081 if (subtype == WRAPPER_SUBTYPE_ELEMENT_ADDR) {
1082 int rank = decode_value (p, &p);
1083 int elem_size = decode_value (p, &p);
1084
1085 ref->method = mono_marshal_get_array_address (rank, elem_size);
1086 } else if (subtype == WRAPPER_SUBTYPE_STRING_CTOR) {
1087 MonoMethod *m;
1088
1089 m = decode_resolve_method_ref (module, p, &p, error);
1090 if (!m)
1091 return FALSE;
1092
1093 if (!target)
1094 return FALSE;
1095 g_assert (target->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED);
1096
1097 info = mono_marshal_get_wrapper_info (target);
1098 if (info && info->subtype == subtype && info->d.string_ctor.method == m)
1099 ref->method = target;
1100 else
1101 return FALSE;
1102 }
1103 break;
1104 }
1105 case MONO_WRAPPER_MANAGED_TO_NATIVE: {
1106 MonoMethod *m;
1107 int subtype = decode_value (p, &p);
1108 char *name;
1109
1110 if (subtype == WRAPPER_SUBTYPE_ICALL_WRAPPER) {
1111 if (!target)
1112 return FALSE;
1113
1114 name = (char*)p;
1115 if (strcmp (target->name, name) != 0)
1116 return FALSE;
1117 ref->method = target;
1118 } else {
1119 m = decode_resolve_method_ref (module, p, &p, error);
1120 if (!m)
1121 return FALSE;
1122
1123 /* This should only happen when looking for an extra method */
1124 if (!target)
1125 return FALSE;
1126 if (mono_marshal_method_from_wrapper (target) == m)
1127 ref->method = target;
1128 else
1129 return FALSE;
1130 }
1131 break;
1132 }
1133 case MONO_WRAPPER_CASTCLASS: {
1134 int subtype = decode_value (p, &p);
1135
1136 if (subtype == WRAPPER_SUBTYPE_CASTCLASS_WITH_CACHE)
1137 ref->method = mono_marshal_get_castclass_with_cache ();
1138 else if (subtype == WRAPPER_SUBTYPE_ISINST_WITH_CACHE)
1139 ref->method = mono_marshal_get_isinst_with_cache ();
1140 else {
1141 mono_error_set_bad_image_by_name (error, module->aot_name, "Invalid CASTCLASS wrapper subtype %d", subtype);
1142 return FALSE;
1143 }
1144 break;
1145 }
1146 case MONO_WRAPPER_RUNTIME_INVOKE: {
1147 int subtype = decode_value (p, &p);
1148
1149 if (!target)
1150 return FALSE;
1151
1152 if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_DYNAMIC) {
1153 if (strcmp (target->name, "runtime_invoke_dynamic") != 0)
1154 return FALSE;
1155 ref->method = target;
1156 } else if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_DIRECT) {
1157 /* Direct wrapper */
1158 MonoMethod *m = decode_resolve_method_ref (module, p, &p, error);
1159 if (!m)
1160 return FALSE;
1161 ref->method = mono_marshal_get_runtime_invoke (m, FALSE);
1162 } else if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_VIRTUAL) {
1163 /* Virtual direct wrapper */
1164 MonoMethod *m = decode_resolve_method_ref (module, p, &p, error);
1165 if (!m)
1166 return FALSE;
1167 ref->method = mono_marshal_get_runtime_invoke (m, TRUE);
1168 } else {
1169 MonoMethodSignature *sig;
1170
1171 sig = decode_signature_with_target (module, NULL, p, &p);
1172 info = mono_marshal_get_wrapper_info (target);
1173 g_assert (info);
1174
1175 if (info->subtype != subtype)
1176 return FALSE;
1177 g_assert (info->d.runtime_invoke.sig);
1178 if (mono_metadata_signature_equal (sig, info->d.runtime_invoke.sig))
1179 ref->method = target;
1180 else
1181 return FALSE;
1182 }
1183 break;
1184 }
1185 case MONO_WRAPPER_DELEGATE_INVOKE:
1186 case MONO_WRAPPER_DELEGATE_BEGIN_INVOKE:
1187 case MONO_WRAPPER_DELEGATE_END_INVOKE: {
1188 gboolean is_inflated = decode_value (p, &p);
1189 WrapperSubtype subtype;
1190
1191 if (is_inflated) {
1192 MonoClass *klass;
1193 MonoMethod *invoke, *wrapper;
1194
1195 klass = decode_klass_ref (module, p, &p, error);
1196 if (!klass)
1197 return FALSE;
1198
1199 switch (wrapper_type) {
1200 case MONO_WRAPPER_DELEGATE_INVOKE:
1201 invoke = mono_get_delegate_invoke (klass);
1202 wrapper = mono_marshal_get_delegate_invoke (invoke, NULL);
1203 break;
1204 case MONO_WRAPPER_DELEGATE_BEGIN_INVOKE:
1205 invoke = mono_get_delegate_begin_invoke (klass);
1206 wrapper = mono_marshal_get_delegate_begin_invoke (invoke);
1207 break;
1208 case MONO_WRAPPER_DELEGATE_END_INVOKE:
1209 invoke = mono_get_delegate_end_invoke (klass);
1210 wrapper = mono_marshal_get_delegate_end_invoke (invoke);
1211 break;
1212 default:
1213 g_assert_not_reached ();
1214 break;
1215 }
1216 if (target) {
1217 /*
1218 * Due to the way mini_get_shared_method_full () works, we could end up with
1219 * multiple copies of the same wrapper.
1220 */
1221 if (wrapper->klass != target->klass)
1222 return FALSE;
1223 ref->method = target;
1224 } else {
1225 ref->method = wrapper;
1226 }
1227 } else {
1228 /*
1229 * These wrappers are associated with a signature, not with a method.
1230 * Since we can't decode them into methods, they need a target method.
1231 */
1232 if (!target)
1233 return FALSE;
1234
1235 if (wrapper_type == MONO_WRAPPER_DELEGATE_INVOKE) {
1236 subtype = (WrapperSubtype)decode_value (p, &p);
1237 info = mono_marshal_get_wrapper_info (target);
1238 if (info) {
1239 if (info->subtype != subtype)
1240 return FALSE;
1241 } else {
1242 if (subtype != WRAPPER_SUBTYPE_NONE)
1243 return FALSE;
1244 }
1245 }
1246 if (sig_matches_target (module, target, p, &p))
1247 ref->method = target;
1248 else
1249 return FALSE;
1250 }
1251 break;
1252 }
1253 case MONO_WRAPPER_NATIVE_TO_MANAGED: {
1254 MonoMethod *m;
1255 MonoClass *klass;
1256
1257 m = decode_resolve_method_ref (module, p, &p, error);
1258 if (!m)
1259 return FALSE;
1260 klass = decode_klass_ref (module, p, &p, error);
1261 if (!klass)
1262 return FALSE;
1263 ref->method = mono_marshal_get_managed_wrapper (m, klass, 0, error);
1264 if (!mono_error_ok (error))
1265 return FALSE;
1266 break;
1267 }
1268 default:
1269 g_assert_not_reached ();
1270 }
1271 } else if (image_index == MONO_AOT_METHODREF_METHODSPEC) {
1272 image_index = decode_value (p, &p);
1273 ref->token = decode_value (p, &p);
1274
1275 image = load_image (module, image_index, error);
1276 if (!image)
1277 return FALSE;
1278 } else if (image_index == MONO_AOT_METHODREF_GINST) {
1279 MonoClass *klass;
1280 MonoGenericContext ctx;
1281
1282 /*
1283 * These methods do not have a token which resolves them, so we
1284 * resolve them immediately.
1285 */
1286 klass = decode_klass_ref (module, p, &p, error);
1287 if (!klass)
1288 return FALSE;
1289
1290 if (target && target->klass != klass)
1291 return FALSE;
1292
1293 image_index = decode_value (p, &p);
1294 ref->token = decode_value (p, &p);
1295
1296 image = load_image (module, image_index, error);
1297 if (!image)
1298 return FALSE;
1299
1300 ref->method = mono_get_method_checked (image, ref->token, NULL, NULL, error);
1301 if (!ref->method)
1302 return FALSE;
1303
1304
1305 memset (&ctx, 0, sizeof (ctx));
1306
1307 if (FALSE && mono_class_is_ginst (klass)) {
1308 ctx.class_inst = mono_class_get_generic_class (klass)->context.class_inst;
1309 ctx.method_inst = NULL;
1310
1311 ref->method = mono_class_inflate_generic_method_full_checked (ref->method, klass, &ctx, error);
1312 if (!ref->method)
1313 return FALSE;
1314 }
1315
1316 memset (&ctx, 0, sizeof (ctx));
1317
1318 if (!decode_generic_context (module, &ctx, p, &p, error))
1319 return FALSE;
1320
1321 ref->method = mono_class_inflate_generic_method_full_checked (ref->method, klass, &ctx, error);
1322 if (!ref->method)
1323 return FALSE;
1324
1325 } else if (image_index == MONO_AOT_METHODREF_ARRAY) {
1326 MonoClass *klass;
1327 int method_type;
1328
1329 klass = decode_klass_ref (module, p, &p, error);
1330 if (!klass)
1331 return FALSE;
1332 method_type = decode_value (p, &p);
1333 switch (method_type) {
1334 case 0:
1335 ref->method = mono_class_get_method_from_name (klass, ".ctor", m_class_get_rank (klass));
1336 break;
1337 case 1:
1338 ref->method = mono_class_get_method_from_name (klass, ".ctor", m_class_get_rank (klass) * 2);
1339 break;
1340 case 2:
1341 ref->method = mono_class_get_method_from_name (klass, "Get", -1);
1342 break;
1343 case 3:
1344 ref->method = mono_class_get_method_from_name (klass, "Address", -1);
1345 break;
1346 case 4:
1347 ref->method = mono_class_get_method_from_name (klass, "Set", -1);
1348 break;
1349 default:
1350 mono_error_set_bad_image_by_name (error, module->aot_name, "Invalid METHODREF_ARRAY method type %d", method_type);
1351 return FALSE;
1352 }
1353 } else {
1354 if (image_index == MONO_AOT_METHODREF_LARGE_IMAGE_INDEX) {
1355 image_index = decode_value (p, &p);
1356 value = decode_value (p, &p);
1357 }
1358
1359 ref->token = MONO_TOKEN_METHOD_DEF | (value & 0xffffff);
1360
1361 image = load_image (module, image_index, error);
1362 if (!image)
1363 return FALSE;
1364 }
1365
1366 *endbuf = p;
1367
1368 ref->image = image;
1369
1370 return TRUE;
1371 }
1372
1373 static gboolean
1374 decode_method_ref (MonoAotModule *module, MethodRef *ref, guint8 *buf, guint8 **endbuf, MonoError *error)
1375 {
1376 return decode_method_ref_with_target (module, ref, NULL, buf, endbuf, error);
1377 }
1378
1379 /*
1380 * decode_resolve_method_ref_with_target:
1381 *
1382 * Similar to decode_method_ref, but resolve and return the method itself.
1383 */
1384 static MonoMethod*
1385 decode_resolve_method_ref_with_target (MonoAotModule *module, MonoMethod *target, guint8 *buf, guint8 **endbuf, MonoError *error)
1386 {
1387 MethodRef ref;
1388
1389 error_init (error);
1390
1391 if (!decode_method_ref_with_target (module, &ref, target, buf, endbuf, error))
1392 return NULL;
1393 if (ref.method)
1394 return ref.method;
1395 if (!ref.image) {
1396 mono_error_set_bad_image_by_name (error, module->aot_name, "No image found for methodref with target");
1397 return NULL;
1398 }
1399 return mono_get_method_checked (ref.image, ref.token, NULL, NULL, error);
1400 }
1401
1402 static MonoMethod*
1403 decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf, MonoError *error)
1404 {
1405 return decode_resolve_method_ref_with_target (module, NULL, buf, endbuf, error);
1406 }
1407
1408 #ifdef ENABLE_AOT_CACHE
1409
1410 /* AOT CACHE */
1411
1412 /*
1413 * FIXME:
1414 * - Add options for controlling the cache size
1415 * - Handle full cache by deleting old assemblies lru style
1416 * - Maybe add a threshold after an assembly is AOT compiled
1417 * - Add options for enabling this for specific main assemblies
1418 */
1419
1420 /* The cache directory */
1421 static char *cache_dir;
1422
1423 /* The number of assemblies AOTed in this run */
1424 static int cache_count;
1425
1426 /* Whenever to AOT in-process */
1427 static gboolean in_process;
1428
1429 static void
1430 collect_assemblies (gpointer data, gpointer user_data)
1431 {
1432 MonoAssembly *ass = data;
1433 GSList **l = user_data;
1434
1435 *l = g_slist_prepend (*l, ass);
1436 }
1437
1438 #define SHA1_DIGEST_LENGTH 20
1439
1440 /*
1441 * get_aot_config_hash:
1442 *
1443 * Return a hash for all the version information an AOT module depends on.
1444 */
1445 static G_GNUC_UNUSED char*
1446 get_aot_config_hash (MonoAssembly *assembly)
1447 {
1448 char *build_info;
1449 GSList *l, *assembly_list = NULL;
1450 GString *s;
1451 int i;
1452 guint8 digest [SHA1_DIGEST_LENGTH];
1453 char *digest_str;
1454
1455 build_info = mono_get_runtime_build_info ();
1456
1457 s = g_string_new (build_info);
1458
1459 mono_assembly_foreach (collect_assemblies, &assembly_list);
1460
1461 /*
1462 * The assembly list includes the current assembly as well, no need
1463 * to add it.
1464 */
1465 for (l = assembly_list; l; l = l->next) {
1466 MonoAssembly *ass = l->data;
1467
1468 g_string_append (s, "_");
1469 g_string_append (s, ass->aname.name);
1470 g_string_append (s, "_");
1471 g_string_append (s, ass->image->guid);
1472 }
1473
1474 for (i = 0; i < s->len; ++i) {
1475 if (!isalnum (s->str [i]) && s->str [i] != '-')
1476 s->str [i] = '_';
1477 }
1478
1479 mono_sha1_get_digest ((guint8*)s->str, s->len, digest);
1480
1481 digest_str = g_malloc0 ((SHA1_DIGEST_LENGTH * 2) + 1);
1482 for (i = 0; i < SHA1_DIGEST_LENGTH; ++i)
1483 sprintf (digest_str + (i * 2), "%02x", digest [i]);
1484
1485 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: file dependencies: %s, hash %s", s->str, digest_str);
1486
1487 g_string_free (s, TRUE);
1488
1489 return digest_str;
1490 }
1491
1492 static void
1493 aot_cache_init (void)
1494 {
1495 if (mono_aot_only)
1496 return;
1497 enable_aot_cache = TRUE;
1498 in_process = TRUE;
1499 }
1500
1501 /*
1502 * aot_cache_load_module:
1503 *
1504 * Load the AOT image corresponding to ASSEMBLY from the aot cache, AOTing it if neccessary.
1505 */
1506 static MonoDl*
1507 aot_cache_load_module (MonoAssembly *assembly, char **aot_name)
1508 {
1509 MonoAotCacheConfig *config;
1510 GSList *l;
1511 char *fname, *tmp2, *aot_options, *failure_fname;
1512 const char *home;
1513 MonoDl *module;
1514 gboolean res;
1515 gint exit_status;
1516 char *hash;
1517 int pid;
1518 gboolean enabled;
1519 FILE *failure_file;
1520
1521 *aot_name = NULL;
1522
1523 if (image_is_dynamic (assembly->image))
1524 return NULL;
1525
1526 /* Check in the list of assemblies enabled for aot caching */
1527 config = mono_get_aot_cache_config ();
1528
1529 enabled = FALSE;
1530 if (config->apps) {
1531 MonoDomain *domain = mono_domain_get ();
1532 MonoAssembly *entry_assembly = domain->entry_assembly;
1533
1534 // FIXME: This cannot be used for mscorlib during startup, since entry_assembly is not set yet
1535 for (l = config->apps; l; l = l->next) {
1536 char *n = l->data;
1537
1538 if ((entry_assembly && !strcmp (entry_assembly->aname.name, n)) || (!entry_assembly && !strcmp (assembly->aname.name, n)))
1539 break;
1540 }
1541 if (l)
1542 enabled = TRUE;
1543 }
1544
1545 if (!enabled) {
1546 for (l = config->assemblies; l; l = l->next) {
1547 char *n = l->data;
1548
1549 if (!strcmp (assembly->aname.name, n))
1550 break;
1551 }
1552 if (l)
1553 enabled = TRUE;
1554 }
1555 if (!enabled)
1556 return NULL;
1557
1558 if (!cache_dir) {
1559 home = g_get_home_dir ();
1560 if (!home)
1561 return NULL;
1562 cache_dir = g_strdup_printf ("%s/Library/Caches/mono/aot-cache", home);
1563 if (!g_file_test (cache_dir, G_FILE_TEST_EXISTS|G_FILE_TEST_IS_DIR))
1564 g_mkdir_with_parents (cache_dir, 0777);
1565 }
1566
1567 /*
1568 * The same assembly can be used in multiple configurations, i.e. multiple
1569 * versions of the runtime, with multiple versions of dependent assemblies etc.
1570 * To handle this, we compute a version string containing all this information, hash it,
1571 * and use the hash as a filename suffix.
1572 */
1573 hash = get_aot_config_hash (assembly);
1574
1575 tmp2 = g_strdup_printf ("%s-%s%s", assembly->image->assembly_name, hash, MONO_SOLIB_EXT);
1576 fname = g_build_filename (cache_dir, tmp2, NULL);
1577 *aot_name = fname;
1578 g_free (tmp2);
1579
1580 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: loading from cache: '%s'.", fname);
1581 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
1582
1583 if (module) {
1584 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: found in cache: '%s'.", fname);
1585 return module;
1586 }
1587
1588 if (!strcmp (assembly->aname.name, "mscorlib") && !mscorlib_aot_loaded)
1589 /*
1590 * Can't AOT this during startup, so we AOT it when called later from
1591 * mono_aot_get_method ().
1592 */
1593 return NULL;
1594
1595 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: not found.");
1596
1597 /* Only AOT one assembly per run to avoid slowing down execution too much */
1598 if (cache_count > 0)
1599 return NULL;
1600 cache_count ++;
1601
1602 /* Check for previous failure */
1603 failure_fname = g_strdup_printf ("%s.failure", fname);
1604 failure_file = fopen (failure_fname, "r");
1605 if (failure_file) {
1606 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: assembly '%s' previously failed to compile '%s' ('%s')... ", assembly->image->name, fname, failure_fname);
1607 g_free (failure_fname);
1608 return NULL;
1609 } else {
1610 g_free (failure_fname);
1611 fclose (failure_file);
1612 }
1613
1614 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: compiling assembly '%s', logfile: '%s.log'... ", assembly->image->name, fname);
1615
1616 /*
1617 * We need to invoke the AOT compiler here. There are multiple approaches:
1618 * - spawn a new runtime process. This can be hard when running with mkbundle, and
1619 * its hard to make the new process load the same set of assemblies.
1620 * - doing it in-process. This exposes the current process to bugs/leaks/side effects of
1621 * the AOT compiler.
1622 * - fork a new process and do the work there.
1623 */
1624 if (in_process) {
1625 aot_options = g_strdup_printf ("outfile=%s,internal-logfile=%s.log%s%s", fname, fname, config->aot_options ? "," : "", config->aot_options ? config->aot_options : "");
1626 /* Maybe due this in another thread ? */
1627 res = mono_compile_assembly (assembly, mono_parse_default_optimizations (NULL), aot_options, NULL);
1628 if (res) {
1629 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: compilation failed.");
1630 failure_fname = g_strdup_printf ("%s.failure", fname);
1631 failure_file = fopen (failure_fname, "a+");
1632 fclose (failure_file);
1633 g_free (failure_fname);
1634 } else {
1635 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: compilation succeeded.");
1636 }
1637 } else {
1638 /*
1639 * - Avoid waiting for the aot process to finish ?
1640 * (less overhead, but multiple processes could aot the same assembly at the same time)
1641 */
1642 pid = fork ();
1643 if (pid == 0) {
1644 FILE *logfile;
1645 char *logfile_name;
1646
1647 /* Child */
1648
1649 logfile_name = g_strdup_printf ("%s/aot.log", cache_dir);
1650 logfile = fopen (logfile_name, "a+");
1651 g_free (logfile_name);
1652
1653 dup2 (fileno (logfile), 1);
1654 dup2 (fileno (logfile), 2);
1655
1656 aot_options = g_strdup_printf ("outfile=%s", fname);
1657 res = mono_compile_assembly (assembly, mono_parse_default_optimizations (NULL), aot_options, NULL);
1658 if (!res) {
1659 exit (1);
1660 } else {
1661 exit (0);
1662 }
1663 } else {
1664 /* Parent */
1665 waitpid (pid, &exit_status, 0);
1666 if (!WIFEXITED (exit_status) && (WEXITSTATUS (exit_status) == 0))
1667 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: failed.");
1668 else
1669 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: succeeded.");
1670 }
1671 }
1672
1673 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
1674
1675 return module;
1676 }
1677
1678 #else
1679
1680 static void
1681 aot_cache_init (void)
1682 {
1683 }
1684
1685 static MonoDl*
1686 aot_cache_load_module (MonoAssembly *assembly, char **aot_name)
1687 {
1688 return NULL;
1689 }
1690
1691 #endif
1692
1693 static void
1694 find_symbol (MonoDl *module, gpointer *globals, const char *name, gpointer *value)
1695 {
1696 if (globals) {
1697 int global_index;
1698 guint16 *table, *entry;
1699 guint16 table_size;
1700 guint32 hash;
1701 char *symbol = (char*)name;
1702
1703 #ifdef TARGET_MACH
1704 symbol = g_strdup_printf ("_%s", name);
1705 #endif
1706
1707 /* The first entry points to the hash */
1708 table = (guint16 *)globals [0];
1709 globals ++;
1710
1711 table_size = table [0];
1712 table ++;
1713
1714 hash = mono_metadata_str_hash (symbol) % table_size;
1715
1716 entry = &table [hash * 2];
1717
1718 /* Search the hash for the index into the globals table */
1719 global_index = -1;
1720 while (entry [0] != 0) {
1721 guint32 index = entry [0] - 1;
1722 guint32 next = entry [1];
1723
1724 //printf ("X: %s %s\n", (char*)globals [index * 2], name);
1725
1726 if (!strcmp (globals [index * 2], symbol)) {
1727 global_index = index;
1728 break;
1729 }
1730
1731 if (next != 0) {
1732 entry = &table [next * 2];
1733 } else {
1734 break;
1735 }
1736 }
1737
1738 if (global_index != -1)
1739 *value = globals [global_index * 2 + 1];
1740 else
1741 *value = NULL;
1742
1743 if (symbol != name)
1744 g_free (symbol);
1745 } else {
1746 char *err = mono_dl_symbol (module, name, value);
1747
1748 if (err)
1749 g_free (err);
1750 }
1751 }
1752
1753 static void
1754 find_amodule_symbol (MonoAotModule *amodule, const char *name, gpointer *value)
1755 {
1756 g_assert (!(amodule->info.flags & MONO_AOT_FILE_FLAG_LLVM_ONLY));
1757
1758 find_symbol (amodule->sofile, amodule->globals, name, value);
1759 }
1760
1761 void
1762 mono_install_load_aot_data_hook (MonoLoadAotDataFunc load_func, MonoFreeAotDataFunc free_func, gpointer user_data)
1763 {
1764 aot_data_load_func = load_func;
1765 aot_data_free_func = free_func;
1766 aot_data_func_user_data = user_data;
1767 }
1768
1769 /* Load the separate aot data file for ASSEMBLY */
1770 static guint8*
1771 open_aot_data (MonoAssembly *assembly, MonoAotFileInfo *info, void **ret_handle)
1772 {
1773 MonoFileMap *map;
1774 char *filename;
1775 guint8 *data;
1776
1777 if (aot_data_load_func) {
1778 data = aot_data_load_func (assembly, info->datafile_size, aot_data_func_user_data, ret_handle);
1779 g_assert (data);
1780 return data;
1781 }
1782
1783 /*
1784 * Use <assembly name>.aotdata as the default implementation if no callback is given
1785 */
1786 filename = g_strdup_printf ("%s.aotdata", assembly->image->name);
1787 map = mono_file_map_open (filename);
1788 g_assert (map);
1789 data = mono_file_map (info->datafile_size, MONO_MMAP_READ, mono_file_map_fd (map), 0, ret_handle);
1790 g_assert (data);
1791
1792 return data;
1793 }
1794
1795 static gboolean
1796 check_usable (MonoAssembly *assembly, MonoAotFileInfo *info, guint8 *blob, char **out_msg)
1797 {
1798 char *build_info;
1799 char *msg = NULL;
1800 gboolean usable = TRUE;
1801 gboolean full_aot, safepoints;
1802 guint32 excluded_cpu_optimizations;
1803
1804 if (strcmp (assembly->image->guid, info->assembly_guid)) {
1805 msg = g_strdup_printf ("doesn't match assembly");
1806 usable = FALSE;
1807 }
1808
1809 build_info = mono_get_runtime_build_info ();
1810 if (strlen ((const char *)info->runtime_version) > 0 && strcmp (info->runtime_version, build_info)) {
1811 msg = g_strdup_printf ("compiled against runtime version '%s' while this runtime has version '%s'", info->runtime_version, build_info);
1812 usable = FALSE;
1813 }
1814 g_free (build_info);
1815
1816 full_aot = info->flags & MONO_AOT_FILE_FLAG_FULL_AOT;
1817
1818 if (mono_aot_only && !full_aot) {
1819 msg = g_strdup_printf ("not compiled with --aot=full");
1820 usable = FALSE;
1821 }
1822 if (!mono_aot_only && full_aot) {
1823 msg = g_strdup_printf ("compiled with --aot=full");
1824 usable = FALSE;
1825 }
1826 if (mono_llvm_only && !(info->flags & MONO_AOT_FILE_FLAG_LLVM_ONLY)) {
1827 msg = g_strdup_printf ("not compiled with --aot=llvmonly");
1828 usable = FALSE;
1829 }
1830 if (mono_use_llvm && !(info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM)) {
1831 /* Prefer LLVM JITted code when using --llvm */
1832 msg = g_strdup_printf ("not compiled with --aot=llvm");
1833 usable = FALSE;
1834 }
1835 if (mini_get_debug_options ()->mdb_optimizations && !(info->flags & MONO_AOT_FILE_FLAG_DEBUG) && !full_aot) {
1836 msg = g_strdup_printf ("not compiled for debugging");
1837 usable = FALSE;
1838 }
1839
1840 mono_arch_cpu_optimizations (&excluded_cpu_optimizations);
1841 if (info->opts & excluded_cpu_optimizations) {
1842 msg = g_strdup_printf ("compiled with unsupported CPU optimizations");
1843 usable = FALSE;
1844 }
1845
1846 if (!mono_aot_only && (info->simd_opts & ~mono_arch_cpu_enumerate_simd_versions ())) {
1847 msg = g_strdup_printf ("compiled with unsupported SIMD extensions");
1848 usable = FALSE;
1849 }
1850
1851 if (info->gc_name_index != -1) {
1852 char *gc_name = (char*)&blob [info->gc_name_index];
1853 const char *current_gc_name = mono_gc_get_gc_name ();
1854
1855 if (strcmp (current_gc_name, gc_name) != 0) {
1856 msg = g_strdup_printf ("compiled against GC %s, while the current runtime uses GC %s.\n", gc_name, current_gc_name);
1857 usable = FALSE;
1858 }
1859 }
1860
1861 safepoints = info->flags & MONO_AOT_FILE_FLAG_SAFEPOINTS;
1862
1863 if (!safepoints && mono_threads_are_safepoints_enabled ()) {
1864 msg = g_strdup_printf ("not compiled with safepoints");
1865 usable = FALSE;
1866 }
1867
1868 *out_msg = msg;
1869 return usable;
1870 }
1871
1872 /*
1873 * TABLE should point to a table of call instructions. Return the address called by the INDEXth entry.
1874 */
1875 static void*
1876 get_call_table_entry (void *table, int index)
1877 {
1878 #if defined(TARGET_ARM)
1879 guint32 *ins_addr;
1880 guint32 ins;
1881 gint32 offset;
1882
1883 ins_addr = (guint32*)table + index;
1884 ins = *ins_addr;
1885 if ((ins >> ARMCOND_SHIFT) == ARMCOND_NV) {
1886 /* blx */
1887 offset = (((int)(((ins & 0xffffff) << 1) | ((ins >> 24) & 0x1))) << 7) >> 7;
1888 return (char*)ins_addr + (offset * 2) + 8 + 1;
1889 } else {
1890 offset = (((int)ins & 0xffffff) << 8) >> 8;
1891 return (char*)ins_addr + (offset * 4) + 8;
1892 }
1893 #elif defined(TARGET_ARM64)
1894 return mono_arch_get_call_target ((guint8*)table + (index * 4) + 4);
1895 #elif defined(TARGET_X86) || defined(TARGET_AMD64)
1896 /* The callee expects an ip which points after the call */
1897 return mono_arch_get_call_target ((guint8*)table + (index * 5) + 5);
1898 #else
1899 g_assert_not_reached ();
1900 return NULL;
1901 #endif
1902 }
1903
1904 /*
1905 * init_amodule_got:
1906 *
1907 * Initialize the shared got entries for AMODULE.
1908 */
1909 static void
1910 init_amodule_got (MonoAotModule *amodule)
1911 {
1912 MonoJumpInfo *ji;
1913 MonoMemPool *mp;
1914 MonoJumpInfo *patches;
1915 guint32 got_offsets [128];
1916 ERROR_DECL (error);
1917 int i, npatches;
1918
1919 /* These can't be initialized in load_aot_module () */
1920 if (amodule->shared_got [0] || amodule->got_initializing)
1921 return;
1922
1923 amodule->got_initializing = TRUE;
1924
1925 mp = mono_mempool_new ();
1926 npatches = amodule->info.nshared_got_entries;
1927 for (i = 0; i < npatches; ++i)
1928 got_offsets [i] = i;
1929 patches = decode_patches (amodule, mp, npatches, FALSE, got_offsets);
1930 g_assert (patches);
1931 for (i = 0; i < npatches; ++i) {
1932 ji = &patches [i];
1933
1934 if (ji->type == MONO_PATCH_INFO_GC_CARD_TABLE_ADDR && !mono_gc_is_moving ()) {
1935 amodule->shared_got [i] = NULL;
1936 } else if (ji->type == MONO_PATCH_INFO_GC_NURSERY_START && !mono_gc_is_moving ()) {
1937 amodule->shared_got [i] = NULL;
1938 } else if (ji->type == MONO_PATCH_INFO_GC_NURSERY_BITS && !mono_gc_is_moving ()) {
1939 amodule->shared_got [i] = NULL;
1940 } else if (ji->type == MONO_PATCH_INFO_IMAGE) {
1941 amodule->shared_got [i] = amodule->assembly->image;
1942 } else if (ji->type == MONO_PATCH_INFO_MSCORLIB_GOT_ADDR) {
1943 if (mono_defaults.corlib) {
1944 MonoAotModule *mscorlib_amodule = (MonoAotModule *)mono_defaults.corlib->aot_module;
1945
1946 if (mscorlib_amodule)
1947 amodule->shared_got [i] = mscorlib_amodule->got;
1948 } else {
1949 amodule->shared_got [i] = amodule->got;
1950 }
1951 } else if (ji->type == MONO_PATCH_INFO_AOT_MODULE) {
1952 amodule->shared_got [i] = amodule;
1953 } else {
1954 amodule->shared_got [i] = mono_resolve_patch_target (NULL, mono_get_root_domain (), NULL, ji, FALSE, error);
1955 mono_error_assert_ok (error);
1956 }
1957 }
1958
1959 if (amodule->got) {
1960 for (i = 0; i < npatches; ++i)
1961 amodule->got [i] = amodule->shared_got [i];
1962 }
1963 if (amodule->llvm_got) {
1964 for (i = 0; i < npatches; ++i)
1965 amodule->llvm_got [i] = amodule->shared_got [i];
1966 }
1967
1968 mono_mempool_destroy (mp);
1969 }
1970
1971 static void
1972 load_aot_module (MonoAssembly *assembly, gpointer user_data)
1973 {
1974 char *aot_name, *found_aot_name;
1975 MonoAotModule *amodule;
1976 MonoDl *sofile;
1977 gboolean usable = TRUE;
1978 char *version_symbol = NULL;
1979 char *msg = NULL;
1980 gpointer *globals = NULL;
1981 MonoAotFileInfo *info = NULL;
1982 int i, version;
1983 gboolean do_load_image = TRUE;
1984 int align_double, align_int64;
1985 guint8 *aot_data = NULL;
1986
1987 if (mono_compile_aot)
1988 return;
1989
1990 if (assembly->image->aot_module)
1991 /*
1992 * Already loaded. This can happen because the assembly loading code might invoke
1993 * the assembly load hooks multiple times for the same assembly.
1994 */
1995 return;
1996
1997 if (image_is_dynamic (assembly->image) || mono_asmctx_get_kind (&assembly->context) == MONO_ASMCTX_REFONLY || mono_domain_get () != mono_get_root_domain ())
1998 return;
1999
2000 mono_aot_lock ();
2001
2002 if (container_assm_name && !container_amodule) {
2003 char *local_ref = container_assm_name;
2004 container_assm_name = NULL;
2005 MonoImageOpenStatus status = MONO_IMAGE_OK;
2006 gchar *dll = g_strdup_printf ( "%s.dll", local_ref);
2007 MonoAssembly *assm = mono_assembly_open_a_lot (dll, &status, MONO_ASMCTX_DEFAULT);
2008 if (!assm) {
2009 gchar *exe = g_strdup_printf ("%s.exe", local_ref);
2010 assm = mono_assembly_open_a_lot (exe, &status, MONO_ASMCTX_DEFAULT);
2011 }
2012 g_assert (assm);
2013 load_aot_module (assm, NULL);
2014 container_amodule = assm->image->aot_module;
2015 }
2016
2017 if (static_aot_modules)
2018 info = (MonoAotFileInfo *)g_hash_table_lookup (static_aot_modules, assembly->aname.name);
2019
2020 mono_aot_unlock ();
2021
2022 sofile = NULL;
2023
2024 found_aot_name = NULL;
2025
2026 if (info) {
2027 /* Statically linked AOT module */
2028 aot_name = g_strdup_printf ("%s", assembly->aname.name);
2029 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "Found statically linked AOT module '%s'.", aot_name);
2030 if (!(info->flags & MONO_AOT_FILE_FLAG_LLVM_ONLY)) {
2031 globals = (void **)info->globals;
2032 g_assert (globals);
2033 }
2034 found_aot_name = g_strdup (aot_name);
2035 } else {
2036 char *err;
2037
2038 if (enable_aot_cache)
2039 sofile = aot_cache_load_module (assembly, &aot_name);
2040 if (!sofile) {
2041 aot_name = g_strdup_printf ("%s%s", assembly->image->name, MONO_SOLIB_EXT);
2042
2043 sofile = mono_dl_open (aot_name, MONO_DL_LAZY, &err);
2044 if (sofile) {
2045 found_aot_name = g_strdup (aot_name);
2046 } else {
2047 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: image '%s' not found: %s", aot_name, err);
2048 g_free (err);
2049 }
2050 g_free (aot_name);
2051 }
2052 if (!sofile) {
2053 char *basename = g_path_get_basename (assembly->image->name);
2054 aot_name = g_strdup_printf ("%s/mono/aot-cache/%s/%s%s", mono_assembly_getrootdir(), MONO_ARCHITECTURE, basename, MONO_SOLIB_EXT);
2055 g_free (basename);
2056 sofile = mono_dl_open (aot_name, MONO_DL_LAZY, &err);
2057 if (!sofile) {
2058 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: image '%s' not found: %s", aot_name, err);
2059 g_free (err);
2060 }
2061 g_free (aot_name);
2062 }
2063 if (!sofile) {
2064 GList *l;
2065
2066 for (l = mono_aot_paths; l; l = l->next) {
2067 char *path = l->data;
2068
2069 char *basename = g_path_get_basename (assembly->image->name);
2070 aot_name = g_strdup_printf ("%s/%s%s", path, basename, MONO_SOLIB_EXT);
2071 sofile = mono_dl_open (aot_name, MONO_DL_LAZY, &err);
2072 if (sofile) {
2073 found_aot_name = g_strdup (aot_name);
2074 } else {
2075 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: image '%s' not found: %s", aot_name, err);
2076 g_free (err);
2077 }
2078 g_free (basename);
2079 g_free (aot_name);
2080 if (sofile)
2081 break;
2082 }
2083 }
2084 if (!sofile) {
2085 if (mono_aot_only && !mono_use_interpreter && assembly->image->tables [MONO_TABLE_METHOD].rows) {
2086 aot_name = g_strdup_printf ("%s%s", assembly->image->name, MONO_SOLIB_EXT);
2087 g_error ("Failed to load AOT module '%s' in aot-only mode.\n", aot_name);
2088 g_free (aot_name);
2089 }
2090 return;
2091 }
2092 }
2093
2094 if (!info) {
2095 find_symbol (sofile, globals, "mono_aot_version", (gpointer *) &version_symbol);
2096 find_symbol (sofile, globals, "mono_aot_file_info", (gpointer*)&info);
2097 }
2098
2099 // Copy aotid to MonoImage
2100 memcpy(&assembly->image->aotid, info->aotid, 16);
2101
2102 if (version_symbol) {
2103 /* Old file format */
2104 version = atoi (version_symbol);
2105 } else {
2106 g_assert (info);
2107 version = info->version;
2108 }
2109
2110 if (version != MONO_AOT_FILE_VERSION) {
2111 msg = g_strdup_printf ("wrong file format version (expected %d got %d)", MONO_AOT_FILE_VERSION, version);
2112 usable = FALSE;
2113 } else {
2114 guint8 *blob;
2115 void *handle;
2116
2117 if (info->flags & MONO_AOT_FILE_FLAG_SEPARATE_DATA) {
2118 aot_data = open_aot_data (assembly, info, &handle);
2119
2120 blob = aot_data + info->table_offsets [MONO_AOT_TABLE_BLOB];
2121 } else {
2122 blob = (guint8 *)info->blob;
2123 }
2124
2125 usable = check_usable (assembly, info, blob, &msg);
2126 }
2127
2128 if (!usable) {
2129 if (mono_aot_only && !mono_use_interpreter) {
2130 g_error ("Failed to load AOT module '%s' while running in aot-only mode: %s.\n", found_aot_name, msg);
2131 } else {
2132 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: module %s is unusable: %s.", found_aot_name, msg);
2133 }
2134 g_free (msg);
2135 g_free (found_aot_name);
2136 if (sofile)
2137 mono_dl_close (sofile);
2138 assembly->image->aot_module = NULL;
2139 return;
2140 }
2141
2142 /* Sanity check */
2143 align_double = MONO_ABI_ALIGNOF (double);
2144 align_int64 = MONO_ABI_ALIGNOF (gint64);
2145 g_assert (info->double_align == align_double);
2146 g_assert (info->long_align == align_int64);
2147 g_assert (info->generic_tramp_num == MONO_TRAMPOLINE_NUM);
2148
2149 amodule = g_new0 (MonoAotModule, 1);
2150 amodule->aot_name = found_aot_name;
2151 amodule->assembly = assembly;
2152
2153 memcpy (&amodule->info, info, sizeof (*info));
2154
2155 amodule->got = (void **)amodule->info.jit_got;
2156 amodule->llvm_got = (void **)amodule->info.llvm_got;
2157 amodule->globals = globals;
2158 amodule->sofile = sofile;
2159 amodule->method_to_code = g_hash_table_new (mono_aligned_addr_hash, NULL);
2160 amodule->extra_methods = g_hash_table_new (NULL, NULL);
2161 amodule->shared_got = g_new0 (gpointer, info->nshared_got_entries);
2162
2163 if (info->flags & MONO_AOT_FILE_FLAG_SEPARATE_DATA) {
2164 for (i = 0; i < MONO_AOT_TABLE_NUM; ++i)
2165 amodule->tables [i] = aot_data + info->table_offsets [i];
2166 }
2167
2168 mono_os_mutex_init_recursive (&amodule->mutex);
2169
2170 /* Read image table */
2171 {
2172 guint32 table_len, i;
2173 char *table = NULL;
2174
2175 if (info->flags & MONO_AOT_FILE_FLAG_SEPARATE_DATA)
2176 table = amodule->tables [MONO_AOT_TABLE_IMAGE_TABLE];
2177 else
2178 table = (char *)info->image_table;
2179 g_assert (table);
2180
2181 table_len = *(guint32*)table;
2182 table += sizeof (guint32);
2183 amodule->image_table = g_new0 (MonoImage*, table_len);
2184 amodule->image_names = g_new0 (MonoAssemblyName, table_len);
2185 amodule->image_guids = g_new0 (char*, table_len);
2186 amodule->image_table_len = table_len;
2187 for (i = 0; i < table_len; ++i) {
2188 MonoAssemblyName *aname = &(amodule->image_names [i]);
2189
2190 aname->name = g_strdup (table);
2191 table += strlen (table) + 1;
2192 amodule->image_guids [i] = g_strdup (table);
2193 table += strlen (table) + 1;
2194 if (table [0] != 0)
2195 aname->culture = g_strdup (table);
2196 table += strlen (table) + 1;
2197 memcpy (aname->public_key_token, table, strlen (table) + 1);
2198 table += strlen (table) + 1;
2199
2200 table = (char *)ALIGN_PTR_TO (table, 8);
2201 aname->flags = *(guint32*)table;
2202 table += 4;
2203 aname->major = *(guint32*)table;
2204 table += 4;
2205 aname->minor = *(guint32*)table;
2206 table += 4;
2207 aname->build = *(guint32*)table;
2208 table += 4;
2209 aname->revision = *(guint32*)table;
2210 table += 4;
2211 }
2212 }
2213
2214 amodule->jit_code_start = (guint8 *)info->jit_code_start;
2215 amodule->jit_code_end = (guint8 *)info->jit_code_end;
2216 if (info->flags & MONO_AOT_FILE_FLAG_SEPARATE_DATA) {
2217 amodule->blob = amodule->tables [MONO_AOT_TABLE_BLOB];
2218 amodule->method_info_offsets = amodule->tables [MONO_AOT_TABLE_METHOD_INFO_OFFSETS];
2219 amodule->ex_info_offsets = amodule->tables [MONO_AOT_TABLE_EX_INFO_OFFSETS];
2220 amodule->class_info_offsets = amodule->tables [MONO_AOT_TABLE_CLASS_INFO_OFFSETS];
2221 amodule->class_name_table = amodule->tables [MONO_AOT_TABLE_CLASS_NAME];
2222 amodule->extra_method_table = amodule->tables [MONO_AOT_TABLE_EXTRA_METHOD_TABLE];
2223 amodule->extra_method_info_offsets = amodule->tables [MONO_AOT_TABLE_EXTRA_METHOD_INFO_OFFSETS];
2224 amodule->got_info_offsets = amodule->tables [MONO_AOT_TABLE_GOT_INFO_OFFSETS];
2225 amodule->llvm_got_info_offsets = amodule->tables [MONO_AOT_TABLE_LLVM_GOT_INFO_OFFSETS];
2226 amodule->weak_field_indexes = amodule->tables [MONO_AOT_TABLE_WEAK_FIELD_INDEXES];
2227 } else {
2228 amodule->blob = info->blob;
2229 amodule->method_info_offsets = (guint32 *)info->method_info_offsets;
2230 amodule->ex_info_offsets = (guint32 *)info->ex_info_offsets;
2231 amodule->class_info_offsets = (guint32 *)info->class_info_offsets;
2232 amodule->class_name_table = (guint16 *)info->class_name_table;
2233 amodule->extra_method_table = (guint32 *)info->extra_method_table;
2234 amodule->extra_method_info_offsets = (guint32 *)info->extra_method_info_offsets;
2235 amodule->got_info_offsets = info->got_info_offsets;
2236 amodule->llvm_got_info_offsets = info->llvm_got_info_offsets;
2237 amodule->weak_field_indexes = info->weak_field_indexes;
2238 }
2239 amodule->unbox_trampolines = (guint32 *)info->unbox_trampolines;
2240 amodule->unbox_trampolines_end = (guint32 *)info->unbox_trampolines_end;
2241 amodule->unbox_trampoline_addresses = (guint32 *)info->unbox_trampoline_addresses;
2242 amodule->unwind_info = (guint8 *)info->unwind_info;
2243 amodule->mem_begin = amodule->jit_code_start;
2244 amodule->mem_end = (guint8 *)info->mem_end;
2245 amodule->plt = (guint8 *)info->plt;
2246 amodule->plt_end = (guint8 *)info->plt_end;
2247 amodule->mono_eh_frame = (guint8 *)info->mono_eh_frame;
2248 amodule->trampolines [MONO_AOT_TRAMP_SPECIFIC] = (guint8 *)info->specific_trampolines;
2249 amodule->trampolines [MONO_AOT_TRAMP_STATIC_RGCTX] = (guint8 *)info->static_rgctx_trampolines;
2250 amodule->trampolines [MONO_AOT_TRAMP_IMT] = (guint8 *)info->imt_trampolines;
2251 amodule->trampolines [MONO_AOT_TRAMP_GSHAREDVT_ARG] = (guint8 *)info->gsharedvt_arg_trampolines;
2252
2253 if (!strcmp (assembly->aname.name, "mscorlib"))
2254 mscorlib_aot_module = amodule;
2255
2256 /* Compute method addresses */
2257 amodule->methods = (void **)g_malloc0 (amodule->info.nmethods * sizeof (gpointer));
2258 for (i = 0; i < amodule->info.nmethods; ++i) {
2259 void *addr = NULL;
2260
2261 if (amodule->info.llvm_get_method) {
2262 gpointer (*get_method) (int) = (gpointer (*)(int))amodule->info.llvm_get_method;
2263
2264 addr = get_method (i);
2265 }
2266
2267 /* method_addresses () contains a table of branches, since the ios linker can update those correctly */
2268 if (!addr && amodule->info.method_addresses) {
2269 addr = get_call_table_entry (amodule->info.method_addresses, i);
2270 g_assert (addr);
2271 if (addr == amodule->info.method_addresses)
2272 addr = NULL;
2273 }
2274 if (addr == NULL)
2275 amodule->methods [i] = GINT_TO_POINTER (-1);
2276 else
2277 amodule->methods [i] = addr;
2278 }
2279
2280 if (make_unreadable) {
2281 #ifndef TARGET_WIN32
2282 guint8 *addr;
2283 guint8 *page_start, *page_end;
2284 int err, len;
2285
2286 addr = amodule->mem_begin;
2287 g_assert (addr);
2288 len = amodule->mem_end - amodule->mem_begin;
2289
2290 /* Round down in both directions to avoid modifying data which is not ours */
2291 page_start = (guint8 *) (((gssize) (addr)) & ~ (mono_pagesize () - 1)) + mono_pagesize ();
2292 page_end = (guint8 *) (((gssize) (addr + len)) & ~ (mono_pagesize () - 1));
2293 if (page_end > page_start) {
2294 err = mono_mprotect (page_start, (page_end - page_start), MONO_MMAP_NONE);
2295 g_assert (err == 0);
2296 }
2297 #endif
2298 }
2299
2300 /* Compute the boundaries of LLVM code */
2301 if (info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM)
2302 compute_llvm_code_range (amodule, &amodule->llvm_code_start, &amodule->llvm_code_end);
2303
2304 mono_aot_lock ();
2305
2306 if (amodule->jit_code_start) {
2307 aot_code_low_addr = MIN (aot_code_low_addr, (gsize)amodule->jit_code_start);
2308 aot_code_high_addr = MAX (aot_code_high_addr, (gsize)amodule->jit_code_end);
2309 }
2310 if (amodule->llvm_code_start) {
2311 aot_code_low_addr = MIN (aot_code_low_addr, (gsize)amodule->llvm_code_start);
2312 aot_code_high_addr = MAX (aot_code_high_addr, (gsize)amodule->llvm_code_end);
2313 }
2314
2315 g_hash_table_insert (aot_modules, assembly, amodule);
2316 mono_aot_unlock ();
2317
2318 if (amodule->jit_code_start)
2319 mono_jit_info_add_aot_module (assembly->image, amodule->jit_code_start, amodule->jit_code_end);
2320 if (amodule->llvm_code_start)
2321 mono_jit_info_add_aot_module (assembly->image, amodule->llvm_code_start, amodule->llvm_code_end);
2322
2323 assembly->image->aot_module = amodule;
2324
2325 if (mono_aot_only && !mono_llvm_only) {
2326 char *code;
2327 find_amodule_symbol (amodule, "specific_trampolines_page", (gpointer *)&code);
2328 amodule->use_page_trampolines = code != NULL;
2329 /*g_warning ("using page trampolines: %d", amodule->use_page_trampolines);*/
2330 }
2331
2332 /*
2333 * Register the plt region as a single trampoline so we can unwind from this code
2334 */
2335 mono_aot_tramp_info_register (
2336 mono_tramp_info_create (
2337 NULL,
2338 amodule->plt,
2339 amodule->plt_end - amodule->plt,
2340 NULL,
2341 mono_unwind_get_cie_program ()
2342 ),
2343 NULL
2344 );
2345
2346 /*
2347 * Since we store methoddef and classdef tokens when referring to methods/classes in
2348 * referenced assemblies, we depend on the exact versions of the referenced assemblies.
2349 * MS calls this 'hard binding'. This means we have to load all referenced assemblies
2350 * non-lazily, since we can't handle out-of-date errors later.
2351 * The cached class info also depends on the exact assemblies.
2352 */
2353 if (do_load_image) {
2354 for (i = 0; i < amodule->image_table_len; ++i) {
2355 ERROR_DECL (error);
2356 load_image (amodule, i, error);
2357 mono_error_cleanup (error); /* FIXME don't swallow the error */
2358 }
2359 }
2360
2361 if (amodule->out_of_date) {
2362 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: Module %s is unusable because a dependency is out-of-date.", assembly->image->name);
2363 if (mono_aot_only)
2364 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", found_aot_name);
2365 } else {
2366 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: image '%s' found.", found_aot_name);
2367 }
2368 }
2369
2370 /*
2371 * mono_aot_register_module:
2372 *
2373 * This should be called by embedding code to register normal AOT modules statically linked
2374 * into the executable.
2375 *
2376 * \param aot_info the value of the 'mono_aot_module_<ASSEMBLY_NAME>_info' global symbol from the AOT module.
2377 */
2378 void
2379 mono_aot_register_module (gpointer *aot_info)
2380 {
2381 gpointer *globals;
2382 char *aname;
2383 MonoAotFileInfo *info = (MonoAotFileInfo *)aot_info;
2384
2385 g_assert (info->version == MONO_AOT_FILE_VERSION);
2386
2387 if (!(info->flags & MONO_AOT_FILE_FLAG_LLVM_ONLY)) {
2388 globals = (void **)info->globals;
2389 g_assert (globals);
2390 }
2391
2392 aname = (char *)info->assembly_name;
2393
2394 /* This could be called before startup */
2395 if (aot_modules)
2396 mono_aot_lock ();
2397
2398 if (!static_aot_modules)
2399 static_aot_modules = g_hash_table_new (g_str_hash, g_str_equal);
2400
2401 g_hash_table_insert (static_aot_modules, aname, info);
2402
2403 if (info->flags & MONO_AOT_FILE_FLAG_EAGER_LOAD) {
2404 g_assert (!container_assm_name);
2405 container_assm_name = aname;
2406 }
2407
2408 if (aot_modules)
2409 mono_aot_unlock ();
2410 }
2411
2412 void
2413 mono_aot_init (void)
2414 {
2415 mono_os_mutex_init_recursive (&aot_mutex);
2416 mono_os_mutex_init_recursive (&aot_page_mutex);
2417 aot_modules = g_hash_table_new (NULL, NULL);
2418
2419 mono_install_assembly_load_hook (load_aot_module, NULL);
2420 mono_counters_register ("Async JIT info size", MONO_COUNTER_INT|MONO_COUNTER_JIT, &async_jit_info_size);
2421
2422 char *lastaot = g_getenv ("MONO_LASTAOT");
2423 if (lastaot) {
2424 mono_last_aot_method = atoi (lastaot);
2425 g_free (lastaot);
2426 }
2427 aot_cache_init ();
2428 }
2429
2430 void
2431 mono_aot_cleanup (void)
2432 {
2433 g_hash_table_destroy (aot_jit_icall_hash);
2434 g_hash_table_destroy (aot_modules);
2435 }
2436
2437 static gboolean
2438 decode_cached_class_info (MonoAotModule *module, MonoCachedClassInfo *info, guint8 *buf, guint8 **endbuf)
2439 {
2440 ERROR_DECL (error);
2441 guint32 flags;
2442 MethodRef ref;
2443 gboolean res;
2444
2445 info->vtable_size = decode_value (buf, &buf);
2446 if (info->vtable_size == -1)
2447 /* Generic type */
2448 return FALSE;
2449 flags = decode_value (buf, &buf);
2450 info->ghcimpl = (flags >> 0) & 0x1;
2451 info->has_finalize = (flags >> 1) & 0x1;
2452 info->has_cctor = (flags >> 2) & 0x1;
2453 info->has_nested_classes = (flags >> 3) & 0x1;
2454 info->blittable = (flags >> 4) & 0x1;
2455 info->has_references = (flags >> 5) & 0x1;
2456 info->has_static_refs = (flags >> 6) & 0x1;
2457 info->no_special_static_fields = (flags >> 7) & 0x1;
2458 info->is_generic_container = (flags >> 8) & 0x1;
2459 info->has_weak_fields = (flags >> 9) & 0x1;
2460
2461 if (info->has_cctor) {
2462 res = decode_method_ref (module, &ref, buf, &buf, error);
2463 mono_error_assert_ok (error); /* FIXME don't swallow the error */
2464 if (!res)
2465 return FALSE;
2466 info->cctor_token = ref.token;
2467 }
2468 if (info->has_finalize) {
2469 res = decode_method_ref (module, &ref, buf, &buf, error);
2470 mono_error_assert_ok (error); /* FIXME don't swallow the error */
2471 if (!res)
2472 return FALSE;
2473 info->finalize_image = ref.image;
2474 info->finalize_token = ref.token;
2475 }
2476
2477 info->instance_size = decode_value (buf, &buf);
2478 info->class_size = decode_value (buf, &buf);
2479 info->packing_size = decode_value (buf, &buf);
2480 info->min_align = decode_value (buf, &buf);
2481
2482 *endbuf = buf;
2483
2484 return TRUE;
2485 }
2486
2487 gpointer
2488 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot, MonoError *error)
2489 {
2490 int i;
2491 MonoClass *klass = vtable->klass;
2492 MonoAotModule *amodule = (MonoAotModule *)m_class_get_image (klass)->aot_module;
2493 guint8 *info, *p;
2494 MonoCachedClassInfo class_info;
2495 gboolean err;
2496 MethodRef ref;
2497 gboolean res;
2498 gpointer addr;
2499 ERROR_DECL_VALUE (inner_error);
2500
2501 error_init (error);
2502
2503 if (MONO_CLASS_IS_INTERFACE (klass) || m_class_get_rank (klass) || !amodule)
2504 return NULL;
2505
2506 info = &amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (m_class_get_type_token (klass)) - 1)];
2507 p = info;
2508
2509 err = decode_cached_class_info (amodule, &class_info, p, &p);
2510 if (!err)
2511 return NULL;
2512
2513 for (i = 0; i < slot; ++i) {
2514 decode_method_ref (amodule, &ref, p, &p, &inner_error);
2515 mono_error_cleanup (&inner_error); /* FIXME don't swallow the error */
2516 }
2517
2518 res = decode_method_ref (amodule, &ref, p, &p, &inner_error);
2519 mono_error_cleanup (&inner_error); /* FIXME don't swallow the error */
2520 if (!res)
2521 return NULL;
2522 if (ref.no_aot_trampoline)
2523 return NULL;
2524
2525 if (mono_metadata_token_index (ref.token) == 0 || mono_metadata_token_table (ref.token) != MONO_TABLE_METHOD)
2526 return NULL;
2527
2528 addr = mono_aot_get_method_from_token (domain, ref.image, ref.token, error);
2529 return addr;
2530 }
2531
2532 gboolean
2533 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
2534 {
2535 MonoAotModule *amodule = (MonoAotModule *)m_class_get_image (klass)->aot_module;
2536 guint8 *p;
2537 gboolean err;
2538
2539 if (m_class_get_rank (klass) || !m_class_get_type_token (klass) || !amodule)
2540 return FALSE;
2541
2542 p = (guint8*)&amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (m_class_get_type_token (klass)) - 1)];
2543
2544 err = decode_cached_class_info (amodule, res, p, &p);
2545 if (!err)
2546 return FALSE;
2547
2548 return TRUE;
2549 }
2550
2551 /**
2552 * mono_aot_get_class_from_name:
2553 *
2554 * Obtains a MonoClass with a given namespace and a given name which is located in IMAGE,
2555 * using a cache stored in the AOT file.
2556 * Stores the resulting class in *KLASS if found, stores NULL otherwise.
2557 *
2558 * Returns: TRUE if the klass was found/not found in the cache, FALSE if no aot file was
2559 * found.
2560 */
2561 gboolean
2562 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
2563 {
2564 MonoAotModule *amodule = (MonoAotModule *)image->aot_module;
2565 guint16 *table, *entry;
2566 guint16 table_size;
2567 guint32 hash;
2568 char full_name_buf [1024];
2569 char *full_name;
2570 const char *name2, *name_space2;
2571 MonoTableInfo *t;
2572 guint32 cols [MONO_TYPEDEF_SIZE];
2573 GHashTable *nspace_table;
2574
2575 if (!amodule || !amodule->class_name_table)
2576 return FALSE;
2577
2578 amodule_lock (amodule);
2579
2580 *klass = NULL;
2581
2582 /* First look in the cache */
2583 if (!amodule->name_cache)
2584 amodule->name_cache = g_hash_table_new (g_str_hash, g_str_equal);
2585 nspace_table = (GHashTable *)g_hash_table_lookup (amodule->name_cache, name_space);
2586 if (nspace_table) {
2587 *klass = (MonoClass *)g_hash_table_lookup (nspace_table, name);
2588 if (*klass) {
2589 amodule_unlock (amodule);
2590 return TRUE;
2591 }
2592 }
2593
2594 table_size = amodule->class_name_table [0];
2595 table = amodule->class_name_table + 1;
2596
2597 if (name_space [0] == '\0')
2598 full_name = g_strdup_printf ("%s", name);
2599 else {
2600 if (strlen (name_space) + strlen (name) < 1000) {
2601 sprintf (full_name_buf, "%s.%s", name_space, name);
2602 full_name = full_name_buf;
2603 } else {
2604 full_name = g_strdup_printf ("%s.%s", name_space, name);
2605 }
2606 }
2607 hash = mono_metadata_str_hash (full_name) % table_size;
2608 if (full_name != full_name_buf)
2609 g_free (full_name);
2610
2611 entry = &table [hash * 2];
2612
2613 if (entry [0] != 0) {
2614 t = &image->tables [MONO_TABLE_TYPEDEF];
2615
2616 while (TRUE) {
2617 guint32 index = entry [0];
2618 guint32 next = entry [1];
2619 guint32 token = mono_metadata_make_token (MONO_TABLE_TYPEDEF, index);
2620
2621 name_table_accesses ++;
2622
2623 mono_metadata_decode_row (t, index - 1, cols, MONO_TYPEDEF_SIZE);
2624
2625 name2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
2626 name_space2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
2627
2628 if (!strcmp (name, name2) && !strcmp (name_space, name_space2)) {
2629 ERROR_DECL (error);
2630 amodule_unlock (amodule);
2631 *klass = mono_class_get_checked (image, token, error);
2632 if (!mono_error_ok (error))
2633 mono_error_cleanup (error); /* FIXME don't swallow the error */
2634
2635 /* Add to cache */
2636 if (*klass) {
2637 amodule_lock (amodule);
2638 nspace_table = (GHashTable *)g_hash_table_lookup (amodule->name_cache, name_space);
2639 if (!nspace_table) {
2640 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
2641 g_hash_table_insert (amodule->name_cache, (char*)name_space2, nspace_table);
2642 }
2643 g_hash_table_insert (nspace_table, (char*)name2, *klass);
2644 amodule_unlock (amodule);
2645 }
2646 return TRUE;
2647 }
2648
2649 if (next != 0) {
2650 entry = &table [next * 2];
2651 } else {
2652 break;
2653 }
2654 }
2655 }
2656
2657 amodule_unlock (amodule);
2658
2659 return TRUE;
2660 }
2661
2662 GHashTable *
2663 mono_aot_get_weak_field_indexes (MonoImage *image)
2664 {
2665 MonoAotModule *amodule = (MonoAotModule *)image->aot_module;
2666
2667 if (!amodule)
2668 return NULL;
2669
2670 /* Initialize weak field indexes from the cached copy */
2671 guint32 *indexes = amodule->weak_field_indexes;
2672 int len = indexes [0];
2673 GHashTable *indexes_hash = g_hash_table_new (NULL, NULL);
2674 for (int i = 0; i < len; ++i)
2675 g_hash_table_insert (indexes_hash, GUINT_TO_POINTER (indexes [i + 1]), GUINT_TO_POINTER (1));
2676 return indexes_hash;
2677 }
2678
2679 /* Compute the boundaries of the LLVM code for AMODULE. */
2680 static void
2681 compute_llvm_code_range (MonoAotModule *amodule, guint8 **code_start, guint8 **code_end)
2682 {
2683 guint8 *p;
2684 int version, fde_count;
2685 gint32 *table;
2686
2687 if (amodule->info.llvm_get_method) {
2688 gpointer (*get_method) (int) = (gpointer (*)(int))amodule->info.llvm_get_method;
2689
2690 *code_start = (guint8 *)get_method (-1);
2691 *code_end = (guint8 *)get_method (-2);
2692
2693 g_assert (*code_end > *code_start);
2694 return;
2695 }
2696
2697 g_assert (amodule->mono_eh_frame);
2698
2699 p = amodule->mono_eh_frame;
2700
2701 /* p points to data emitted by LLVM in DwarfException::EmitMonoEHFrame () */
2702
2703 /* Header */
2704 version = *p;
2705 g_assert (version == 3);
2706 p ++;
2707 p ++;
2708 p = (guint8 *)ALIGN_PTR_TO (p, 4);
2709
2710 fde_count = *(guint32*)p;
2711 p += 4;
2712 table = (gint32*)p;
2713
2714 if (fde_count > 0) {
2715 *code_start = (guint8 *)amodule->methods [table [0]];
2716 *code_end = (guint8*)amodule->methods [table [(fde_count - 1) * 2]] + table [fde_count * 2];
2717 } else {
2718 *code_start = NULL;
2719 *code_end = NULL;
2720 }
2721 }
2722
2723 static gboolean
2724 is_llvm_code (MonoAotModule *amodule, guint8 *code)
2725 {
2726 if ((guint8*)code >= amodule->llvm_code_start && (guint8*)code < amodule->llvm_code_end)
2727 return TRUE;
2728 else
2729 return FALSE;
2730 }
2731
2732 static gboolean
2733 is_thumb_code (MonoAotModule *amodule, guint8 *code)
2734 {
2735 if (is_llvm_code (amodule, code) && (amodule->info.flags & MONO_AOT_FILE_FLAG_LLVM_THUMB))
2736 return TRUE;
2737 else
2738 return FALSE;
2739 }
2740
2741 /*
2742 * decode_llvm_mono_eh_frame:
2743 *
2744 * Decode the EH information emitted by our modified LLVM compiler and construct a
2745 * MonoJitInfo structure from it.
2746 * If JINFO is NULL, set OUT_LLVM_CLAUSES to the number of llvm level clauses.
2747 * This function is async safe when called in async context.
2748 */
2749 static void
2750 decode_llvm_mono_eh_frame (MonoAotModule *amodule, MonoDomain *domain, MonoJitInfo *jinfo,
2751 guint8 *code, guint32 code_len,
2752 MonoJitExceptionInfo *clauses, int num_clauses,
2753 GSList **nesting,
2754 int *this_reg, int *this_offset, int *out_llvm_clauses)
2755 {
2756 guint8 *p, *code1, *code2;
2757 guint8 *fde, *cie, *code_start, *code_end;
2758 int version, fde_count;
2759 gint32 *table;
2760 int i, pos, left, right;
2761 MonoJitExceptionInfo *ei;
2762 guint32 fde_len, ei_len, nested_len, nindex;
2763 gpointer *type_info;
2764 MonoLLVMFDEInfo info;
2765 guint8 *unw_info;
2766 gboolean async;
2767
2768 async = mono_thread_info_is_async_context ();
2769
2770 if (!amodule->mono_eh_frame) {
2771 if (!jinfo) {
2772 *out_llvm_clauses = num_clauses;
2773 return;
2774 }
2775 memcpy (jinfo->clauses, clauses, num_clauses * sizeof (MonoJitExceptionInfo));
2776 return;
2777 }
2778
2779 g_assert (amodule->mono_eh_frame && code);
2780
2781 p = amodule->mono_eh_frame;
2782
2783 /* p points to data emitted by LLVM in DwarfMonoException::EmitMonoEHFrame () */
2784
2785 /* Header */
2786 version = *p;
2787 g_assert (version == 3);
2788 p ++;
2789 /* func_encoding = *p; */
2790 p ++;
2791 p = (guint8 *)ALIGN_PTR_TO (p, 4);
2792
2793 fde_count = *(guint32*)p;
2794 p += 4;
2795 table = (gint32*)p;
2796
2797 /* There is +1 entry in the table */
2798 cie = p + ((fde_count + 1) * 8);
2799
2800 /* Binary search in the table to find the entry for code */
2801 left = 0;
2802 right = fde_count;
2803 while (TRUE) {
2804 pos = (left + right) / 2;
2805
2806 /* The table contains method index/fde offset pairs */
2807 g_assert (table [(pos * 2)] != -1);
2808 code1 = (guint8 *)amodule->methods [table [(pos * 2)]];
2809 if (pos + 1 == fde_count) {
2810 code2 = amodule->llvm_code_end;
2811 } else {
2812 g_assert (table [(pos + 1) * 2] != -1);
2813 code2 = (guint8 *)amodule->methods [table [(pos + 1) * 2]];
2814 }
2815
2816 if (code < code1)
2817 right = pos;
2818 else if (code >= code2)
2819 left = pos + 1;
2820 else
2821 break;
2822 }
2823
2824 code_start = (guint8 *)amodule->methods [table [(pos * 2)]];
2825 if (pos + 1 == fde_count) {
2826 /* The +1 entry in the table contains the length of the last method */
2827 int len = table [(pos + 1) * 2];
2828 code_end = code_start + len;
2829 } else {
2830 code_end = (guint8 *)amodule->methods [table [(pos + 1) * 2]];
2831 }
2832 if (!code_len)
2833 code_len = code_end - code_start;
2834
2835 g_assert (code >= code_start && code < code_end);
2836
2837 if (is_thumb_code (amodule, code_start))
2838 /* Clear thumb flag */
2839 code_start = (guint8*)(((mgreg_t)code_start) & ~1);
2840
2841 fde = amodule->mono_eh_frame + table [(pos * 2) + 1];
2842 /* This won't overflow because there is +1 entry in the table */
2843 fde_len = table [(pos * 2) + 2 + 1] - table [(pos * 2) + 1];
2844
2845 /* Compute lengths */
2846 mono_unwind_decode_llvm_mono_fde (fde, fde_len, cie, code_start, &info, NULL, NULL, NULL);
2847
2848 if (async) {
2849 /* These are leaked, but the leak is bounded */
2850 ei = mono_domain_alloc0_lock_free (domain, info.ex_info_len * sizeof (MonoJitExceptionInfo));
2851 type_info = mono_domain_alloc0_lock_free (domain, info.ex_info_len * sizeof (gpointer));
2852 unw_info = mono_domain_alloc0_lock_free (domain, info.unw_info_len);
2853 } else {
2854 ei = (MonoJitExceptionInfo *)g_malloc0 (info.ex_info_len * sizeof (MonoJitExceptionInfo));
2855 type_info = (gpointer *)g_malloc0 (info.ex_info_len * sizeof (gpointer));
2856 unw_info = (guint8*)g_malloc0 (info.unw_info_len);
2857 }
2858 mono_unwind_decode_llvm_mono_fde (fde, fde_len, cie, code_start, &info, ei, type_info, unw_info);
2859
2860 ei_len = info.ex_info_len;
2861 *this_reg = info.this_reg;
2862 *this_offset = info.this_offset;
2863
2864 /*
2865 * LLVM might represent one IL region with multiple regions.
2866 */
2867
2868 /* Count number of nested clauses */
2869 nested_len = 0;
2870 for (i = 0; i < ei_len; ++i) {
2871 /* This might be unaligned */
2872 gint32 cindex1 = read32 (type_info [i]);
2873 GSList *l;
2874
2875 for (l = nesting [cindex1]; l; l = l->next)
2876 nested_len ++;
2877 }
2878
2879 if (!jinfo) {
2880 *out_llvm_clauses = ei_len + nested_len;
2881 return;
2882 }
2883
2884 /* Store the unwind info addr/length in the MonoJitInfo structure itself so its async safe */
2885 MonoUnwindJitInfo *jinfo_unwind = mono_jit_info_get_unwind_info (jinfo);
2886 g_assert (jinfo_unwind);
2887 jinfo_unwind->unw_info = unw_info;
2888 jinfo_unwind->unw_info_len = info.unw_info_len;
2889
2890 for (i = 0; i < ei_len; ++i) {
2891 /*
2892 * clauses contains the original IL exception info saved by the AOT
2893 * compiler, we have to combine that with the information produced by LLVM
2894 */
2895 /* The type_info entries contain IL clause indexes */
2896 int clause_index = read32 (type_info [i]);
2897 MonoJitExceptionInfo *jei = &jinfo->clauses [i];
2898 MonoJitExceptionInfo *orig_jei = &clauses [clause_index];
2899
2900 g_assert (clause_index < num_clauses);
2901 jei->flags = orig_jei->flags;
2902 jei->data.catch_class = orig_jei->data.catch_class;
2903
2904 jei->try_start = ei [i].try_start;
2905 jei->try_end = ei [i].try_end;
2906 jei->handler_start = ei [i].handler_start;
2907 jei->clause_index = clause_index;
2908
2909 if (is_thumb_code (amodule, (guint8 *)jei->try_start)) {
2910 jei->try_start = (void*)((mgreg_t)jei->try_start & ~1);
2911 jei->try_end = (void*)((mgreg_t)jei->try_end & ~1);
2912 /* Make sure we transition to thumb when a handler starts */
2913 jei->handler_start = (void*)((mgreg_t)jei->handler_start + 1);
2914 }
2915 }
2916
2917 /* See exception_cb () in mini-llvm.c as to why this is needed */
2918 nindex = ei_len;
2919 for (i = 0; i < ei_len; ++i) {
2920 gint32 cindex1 = read32 (type_info [i]);
2921 GSList *l;
2922
2923 for (l = nesting [cindex1]; l; l = l->next) {
2924 gint32 nesting_cindex = GPOINTER_TO_INT (l->data);
2925 MonoJitExceptionInfo *nesting_ei;
2926 MonoJitExceptionInfo *nesting_clause = &clauses [nesting_cindex];
2927
2928 nesting_ei = &jinfo->clauses [nindex];
2929 nindex ++;
2930
2931 memcpy (nesting_ei, &jinfo->clauses [i], sizeof (MonoJitExceptionInfo));
2932 nesting_ei->flags = nesting_clause->flags;
2933 nesting_ei->data.catch_class = nesting_clause->data.catch_class;
2934 nesting_ei->clause_index = nesting_cindex;
2935 }
2936 }
2937 g_assert (nindex == ei_len + nested_len);
2938 }
2939
2940 static gpointer
2941 alloc0_jit_info_data (MonoDomain *domain, int size, gboolean async_context)
2942 {
2943 gpointer res;
2944
2945 if (async_context) {
2946 res = mono_domain_alloc0_lock_free (domain, size);
2947 mono_atomic_fetch_add_i32 (&async_jit_info_size, size);
2948 } else {
2949 res = mono_domain_alloc0 (domain, size);
2950 }
2951 return res;
2952 }
2953
2954 /*
2955 * LOCKING: Acquires the domain lock.
2956 * In async context, this is async safe.
2957 */
2958 static MonoJitInfo*
2959 decode_exception_debug_info (MonoAotModule *amodule, MonoDomain *domain,
2960 MonoMethod *method, guint8* ex_info,
2961 guint8 *code, guint32 code_len)
2962 {
2963 ERROR_DECL (error);
2964 int i, buf_len, num_clauses, len;
2965 MonoJitInfo *jinfo;
2966 MonoJitInfoFlags flags = JIT_INFO_NONE;
2967 guint unwind_info, eflags;
2968 gboolean has_generic_jit_info, has_dwarf_unwind_info, has_clauses, has_seq_points, has_try_block_holes, has_arch_eh_jit_info;
2969 gboolean from_llvm, has_gc_map;
2970 guint8 *p;
2971 int try_holes_info_size, num_holes;
2972 int this_reg = 0, this_offset = 0;
2973 gboolean async;
2974
2975 /* Load the method info from the AOT file */
2976 async = mono_thread_info_is_async_context ();
2977
2978 p = ex_info;
2979 eflags = decode_value (p, &p);
2980 has_generic_jit_info = (eflags & 1) != 0;
2981 has_dwarf_unwind_info = (eflags & 2) != 0;
2982 has_clauses = (eflags & 4) != 0;
2983 has_seq_points = (eflags & 8) != 0;
2984 from_llvm = (eflags & 16) != 0;
2985 has_try_block_holes = (eflags & 32) != 0;
2986 has_gc_map = (eflags & 64) != 0;
2987 has_arch_eh_jit_info = (eflags & 128) != 0;
2988
2989 if (has_dwarf_unwind_info) {
2990 unwind_info = decode_value (p, &p);
2991 g_assert (unwind_info < (1 << 30));
2992 } else {
2993 unwind_info = decode_value (p, &p);
2994 }
2995 if (has_generic_jit_info)
2996 flags = (MonoJitInfoFlags)(flags | JIT_INFO_HAS_GENERIC_JIT_INFO);
2997
2998 if (has_try_block_holes) {
2999 num_holes = decode_value (p, &p);
3000 flags = (MonoJitInfoFlags)(flags | JIT_INFO_HAS_TRY_BLOCK_HOLES);
3001 try_holes_info_size = sizeof (MonoTryBlockHoleTableJitInfo) + num_holes * sizeof (MonoTryBlockHoleJitInfo);
3002 } else {
3003 num_holes = try_holes_info_size = 0;
3004 }
3005
3006 if (has_arch_eh_jit_info) {
3007 flags = (MonoJitInfoFlags)(flags | JIT_INFO_HAS_ARCH_EH_INFO);
3008 /* Overwrite the original code_len which includes alignment padding */
3009 code_len = decode_value (p, &p);
3010 }
3011
3012 /* Exception table */
3013 if (has_clauses)
3014 num_clauses = decode_value (p, &p);
3015 else
3016 num_clauses = 0;
3017
3018 if (from_llvm) {
3019 MonoJitExceptionInfo *clauses;
3020 GSList **nesting;
3021
3022 /*
3023 * Part of the info is encoded by the AOT compiler, the rest is in the .eh_frame
3024 * section.
3025 */
3026 if (async) {
3027 if (num_clauses < 16) {
3028 clauses = g_newa (MonoJitExceptionInfo, num_clauses);
3029 nesting = g_newa (GSList*, num_clauses);
3030 } else {
3031 clauses = alloc0_jit_info_data (domain, sizeof (MonoJitExceptionInfo) * num_clauses, TRUE);
3032 nesting = alloc0_jit_info_data (domain, sizeof (GSList*) * num_clauses, TRUE);
3033 }
3034 memset (clauses, 0, sizeof (MonoJitExceptionInfo) * num_clauses);
3035 memset (nesting, 0, sizeof (GSList*) * num_clauses);
3036 } else {
3037 clauses = g_new0 (MonoJitExceptionInfo, num_clauses);
3038 nesting = g_new0 (GSList*, num_clauses);
3039 }
3040
3041 for (i = 0; i < num_clauses; ++i) {
3042 MonoJitExceptionInfo *ei = &clauses [i];
3043
3044 ei->flags = decode_value (p, &p);
3045
3046 if (!(ei->flags == MONO_EXCEPTION_CLAUSE_FILTER || ei->flags == MONO_EXCEPTION_CLAUSE_FINALLY)) {
3047 int len = decode_value (p, &p);
3048
3049 if (len > 0) {
3050 if (async) {
3051 p += len;
3052 } else {
3053 ei->data.catch_class = decode_klass_ref (amodule, p, &p, error);
3054 mono_error_cleanup (error); /* FIXME don't swallow the error */
3055 }
3056 }
3057 }
3058
3059 ei->clause_index = i;
3060
3061 ei->try_offset = decode_value (p, &p);
3062 ei->try_len = decode_value (p, &p);
3063 ei->handler_offset = decode_value (p, &p);
3064 ei->handler_len = decode_value (p, &p);
3065
3066 /* Read the list of nesting clauses */
3067 while (TRUE) {
3068 int nesting_index = decode_value (p, &p);
3069 if (nesting_index == -1)
3070 break;
3071 // FIXME: async
3072 g_assert (!async);
3073 nesting [i] = g_slist_prepend (nesting [i], GINT_TO_POINTER (nesting_index));
3074 }
3075 }
3076
3077 flags |= JIT_INFO_HAS_UNWIND_INFO;
3078
3079 int num_llvm_clauses;
3080 /* Get the length first */
3081 decode_llvm_mono_eh_frame (amodule, domain, NULL, code, code_len, clauses, num_clauses, nesting, &this_reg, &this_offset, &num_llvm_clauses);
3082 len = mono_jit_info_size (flags, num_llvm_clauses, num_holes);
3083 jinfo = (MonoJitInfo *)alloc0_jit_info_data (domain, len, async);
3084 mono_jit_info_init (jinfo, method, code, code_len, flags, num_llvm_clauses, num_holes);
3085
3086 decode_llvm_mono_eh_frame (amodule, domain, jinfo, code, code_len, clauses, num_clauses, nesting, &this_reg, &this_offset, NULL);
3087
3088 if (!async) {
3089 g_free (clauses);
3090 for (i = 0; i < num_clauses; ++i)
3091 g_slist_free (nesting [i]);
3092 g_free (nesting);
3093 }
3094 jinfo->from_llvm = 1;
3095 } else {
3096 len = mono_jit_info_size (flags, num_clauses, num_holes);
3097 jinfo = (MonoJitInfo *)alloc0_jit_info_data (domain, len, async);
3098 mono_jit_info_init (jinfo, method, code, code_len, flags, num_clauses, num_holes);
3099
3100 for (i = 0; i < jinfo->num_clauses; ++i) {
3101 MonoJitExceptionInfo *ei = &jinfo->clauses [i];
3102
3103 ei->flags = decode_value (p, &p);
3104
3105 #ifdef MONO_CONTEXT_SET_LLVM_EXC_REG
3106 /* Not used for catch clauses */
3107 if (ei->flags != MONO_EXCEPTION_CLAUSE_NONE)
3108 ei->exvar_offset = decode_value (p, &p);
3109 #else
3110 ei->exvar_offset = decode_value (p, &p);
3111 #endif
3112
3113 if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER || ei->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
3114 ei->data.filter = code + decode_value (p, &p);
3115 else {
3116 int len = decode_value (p, &p);
3117
3118 if (len > 0) {
3119 if (async) {
3120 p += len;
3121 } else {
3122 ei->data.catch_class = decode_klass_ref (amodule, p, &p, error);
3123 mono_error_cleanup (error); /* FIXME don't swallow the error */
3124 }
3125 }
3126 }
3127
3128 ei->try_start = code + decode_value (p, &p);
3129 ei->try_end = code + decode_value (p, &p);
3130 ei->handler_start = code + decode_value (p, &p);
3131 }
3132
3133 jinfo->unwind_info = unwind_info;
3134 jinfo->domain_neutral = 0;
3135 jinfo->from_aot = 1;
3136 }
3137
3138 if (has_try_block_holes) {
3139 MonoTryBlockHoleTableJitInfo *table;
3140
3141 g_assert (jinfo->has_try_block_holes);
3142
3143 table = mono_jit_info_get_try_block_hole_table_info (jinfo);
3144 g_assert (table);
3145
3146 table->num_holes = (guint16)num_holes;
3147 for (i = 0; i < num_holes; ++i) {
3148 MonoTryBlockHoleJitInfo *hole = &table->holes [i];
3149 hole->clause = decode_value (p, &p);
3150 hole->length = decode_value (p, &p);
3151 hole->offset = decode_value (p, &p);
3152 }
3153 }
3154
3155 if (has_arch_eh_jit_info) {
3156 MonoArchEHJitInfo *eh_info;
3157
3158 g_assert (jinfo->has_arch_eh_info);
3159
3160 eh_info = mono_jit_info_get_arch_eh_info (jinfo);
3161 eh_info->stack_size = decode_value (p, &p);
3162 eh_info->epilog_size = decode_value (p, &p);
3163 }
3164
3165 if (async) {
3166 /* The rest is not needed in async mode */
3167 jinfo->async = TRUE;
3168 jinfo->d.aot_info = amodule;
3169 // FIXME: Cache
3170 return jinfo;
3171 }
3172
3173 if (has_generic_jit_info) {
3174 MonoGenericJitInfo *gi;
3175 int len;
3176
3177 g_assert (jinfo->has_generic_jit_info);
3178
3179 gi = mono_jit_info_get_generic_jit_info (jinfo);
3180 g_assert (gi);
3181
3182 gi->nlocs = decode_value (p, &p);
3183 if (gi->nlocs) {
3184 gi->locations = (MonoDwarfLocListEntry *)alloc0_jit_info_data (domain, gi->nlocs * sizeof (MonoDwarfLocListEntry), async);
3185 for (i = 0; i < gi->nlocs; ++i) {
3186 MonoDwarfLocListEntry *entry = &gi->locations [i];
3187
3188 entry->is_reg = decode_value (p, &p);
3189 entry->reg = decode_value (p, &p);
3190 if (!entry->is_reg)
3191 entry->offset = decode_value (p, &p);
3192 if (i > 0)
3193 entry->from = decode_value (p, &p);
3194 entry->to = decode_value (p, &p);
3195 }
3196 gi->has_this = 1;
3197 } else {
3198 if (from_llvm) {
3199 gi->has_this = this_reg != -1;
3200 gi->this_reg = this_reg;
3201 gi->this_offset = this_offset;
3202 } else {
3203 gi->has_this = decode_value (p, &p);
3204 gi->this_reg = decode_value (p, &p);
3205 gi->this_offset = decode_value (p, &p);
3206 }
3207 }
3208
3209 len = decode_value (p, &p);
3210 if (async) {
3211 p += len;
3212 } else {
3213 jinfo->d.method = decode_resolve_method_ref (amodule, p, &p, error);
3214 mono_error_cleanup (error); /* FIXME don't swallow the error */
3215 }
3216
3217 gi->generic_sharing_context = alloc0_jit_info_data (domain, sizeof (MonoGenericSharingContext), async);
3218 if (decode_value (p, &p)) {
3219 /* gsharedvt */
3220 MonoGenericSharingContext *gsctx = gi->generic_sharing_context;
3221
3222 gsctx->is_gsharedvt = TRUE;
3223 }
3224 }
3225
3226 if (method && has_seq_points) {
3227 MonoSeqPointInfo *seq_points;
3228
3229 p += mono_seq_point_info_read (&seq_points, p, FALSE);
3230
3231 mono_domain_lock (domain);
3232 /* This could be set already since this function can be called more than once for the same method */
3233 if (!g_hash_table_lookup (domain_jit_info (domain)->seq_points, method))
3234 g_hash_table_insert (domain_jit_info (domain)->seq_points, method, seq_points);
3235 else
3236 mono_seq_point_info_free (seq_points);
3237 mono_domain_unlock (domain);
3238 }
3239
3240 /* Load debug info */
3241 buf_len = decode_value (p, &p);
3242 if (!async)
3243 mono_debug_add_aot_method (domain, method, code, p, buf_len);
3244 p += buf_len;
3245
3246 if (has_gc_map) {
3247 int map_size = decode_value (p, &p);
3248 /* The GC map requires 4 bytes of alignment */
3249 while ((guint64)(gsize)p % 4)
3250 p ++;
3251 jinfo->gc_info = p;
3252 p += map_size;
3253 }
3254
3255 if (amodule != m_class_get_image (jinfo->d.method->klass)->aot_module) {
3256 mono_aot_lock ();
3257 if (!ji_to_amodule)
3258 ji_to_amodule = g_hash_table_new (NULL, NULL);
3259 g_hash_table_insert (ji_to_amodule, jinfo, amodule);
3260 mono_aot_unlock ();
3261 }
3262
3263 return jinfo;
3264 }
3265
3266 static gboolean
3267 amodule_contains_code_addr (MonoAotModule *amodule, guint8 *code)
3268 {
3269 return (code >= amodule->jit_code_start && code <= amodule->jit_code_end) ||
3270 (code >= amodule->llvm_code_start && code <= amodule->llvm_code_end);
3271 }
3272
3273 /*
3274 * mono_aot_get_unwind_info:
3275 *
3276 * Return a pointer to the DWARF unwind info belonging to JI.
3277 */
3278 guint8*
3279 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
3280 {
3281 MonoAotModule *amodule;
3282 guint8 *p;
3283 guint8 *code = (guint8 *)ji->code_start;
3284
3285 if (ji->async)
3286 amodule = (MonoAotModule *)ji->d.aot_info;
3287 else
3288 amodule = (MonoAotModule *)m_class_get_image (jinfo_get_method (ji)->klass)->aot_module;
3289 g_assert (amodule);
3290 g_assert (ji->from_aot);
3291
3292 if (!amodule_contains_code_addr (amodule, code)) {
3293 /* ji belongs to a different aot module than amodule */
3294 mono_aot_lock ();
3295 g_assert (ji_to_amodule);
3296 amodule = (MonoAotModule *)g_hash_table_lookup (ji_to_amodule, ji);
3297 g_assert (amodule);
3298 g_assert (amodule_contains_code_addr (amodule, code));
3299 mono_aot_unlock ();
3300 }
3301
3302 p = amodule->unwind_info + ji->unwind_info;
3303 *unwind_info_len = decode_value (p, &p);
3304 return p;
3305 }
3306
3307 static void
3308 msort_method_addresses_internal (gpointer *array, int *indexes, int lo, int hi, gpointer *scratch, int *scratch_indexes)
3309 {
3310 int mid = (lo + hi) / 2;
3311 int i, t_lo, t_hi;
3312
3313 if (lo >= hi)
3314 return;
3315
3316 if (hi - lo < 32) {
3317 for (i = lo; i < hi; ++i)
3318 if (array [i] > array [i + 1])
3319 break;
3320 if (i == hi)
3321 /* Already sorted */
3322 return;
3323 }
3324
3325 msort_method_addresses_internal (array, indexes, lo, mid, scratch, scratch_indexes);
3326 msort_method_addresses_internal (array, indexes, mid + 1, hi, scratch, scratch_indexes);
3327
3328 if (array [mid] < array [mid + 1])
3329 return;
3330
3331 /* Merge */
3332 t_lo = lo;
3333 t_hi = mid + 1;
3334 for (i = lo; i <= hi; i ++) {
3335 if (t_lo <= mid && ((t_hi > hi) || array [t_lo] < array [t_hi])) {
3336 scratch [i] = array [t_lo];
3337 scratch_indexes [i] = indexes [t_lo];
3338 t_lo ++;
3339 } else {
3340 scratch [i] = array [t_hi];
3341 scratch_indexes [i] = indexes [t_hi];
3342 t_hi ++;
3343 }
3344 }
3345 for (i = lo; i <= hi; ++i) {
3346 array [i] = scratch [i];
3347 indexes [i] = scratch_indexes [i];
3348 }
3349 }
3350
3351 static void
3352 msort_method_addresses (gpointer *array, int *indexes, int len)
3353 {
3354 gpointer *scratch;
3355 int *scratch_indexes;
3356
3357 scratch = g_new (gpointer, len);
3358 scratch_indexes = g_new (int, len);
3359 msort_method_addresses_internal (array, indexes, 0, len - 1, scratch, scratch_indexes);
3360 g_free (scratch);
3361 g_free (scratch_indexes);
3362 }
3363
3364 /*
3365 * mono_aot_find_jit_info:
3366 *
3367 * In async context, the resulting MonoJitInfo will not have its method field set, and it will not be added
3368 * to the jit info tables.
3369 * FIXME: Large sizes in the lock free allocator
3370 */
3371 MonoJitInfo *
3372 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
3373 {
3374 ERROR_DECL (error);
3375 int pos, left, right, code_len;
3376 int method_index, table_len;
3377 guint32 token;
3378 MonoAotModule *amodule = (MonoAotModule *)image->aot_module;
3379 MonoMethod *method = NULL;
3380 MonoJitInfo *jinfo;
3381 guint8 *code, *ex_info, *p;
3382 guint32 *table;
3383 int nmethods;
3384 gpointer *methods;
3385 guint8 *code1, *code2;
3386 int methods_len, i;
3387 gboolean async;
3388
3389 if (!amodule)
3390 return NULL;
3391
3392 nmethods = amodule->info.nmethods;
3393
3394 if (domain != mono_get_root_domain ())
3395 /* FIXME: */
3396 return NULL;
3397
3398 if (!amodule_contains_code_addr (amodule, (guint8 *)addr))
3399 return NULL;
3400
3401 async = mono_thread_info_is_async_context ();
3402
3403 /* Compute a sorted table mapping code to method indexes. */
3404 if (!amodule->sorted_methods) {
3405 // FIXME: async
3406 gpointer *methods = g_new0 (gpointer, nmethods);
3407 int *method_indexes = g_new0 (int, nmethods);
3408 int methods_len = 0;
3409
3410 for (i = 0; i < nmethods; ++i) {
3411 /* Skip the -1 entries to speed up sorting */
3412 if (amodule->methods [i] == GINT_TO_POINTER (-1))
3413 continue;
3414 methods [methods_len] = amodule->methods [i];
3415 method_indexes [methods_len] = i;
3416 methods_len ++;
3417 }
3418 /* Use a merge sort as this is mostly sorted */
3419 msort_method_addresses (methods, method_indexes, methods_len);
3420 for (i = 0; i < methods_len -1; ++i)
3421 g_assert (methods [i] <= methods [i + 1]);
3422 amodule->sorted_methods_len = methods_len;
3423 if (mono_atomic_cas_ptr ((gpointer*)&amodule->sorted_methods, methods, NULL) != NULL)
3424 /* Somebody got in before us */
3425 g_free (methods);
3426 if (mono_atomic_cas_ptr ((gpointer*)&amodule->sorted_method_indexes, method_indexes, NULL) != NULL)
3427 /* Somebody got in before us */
3428 g_free (method_indexes);
3429 }
3430
3431 /* Binary search in the sorted_methods table */
3432 methods = amodule->sorted_methods;
3433 methods_len = amodule->sorted_methods_len;
3434 code = (guint8 *)addr;
3435 left = 0;
3436 right = methods_len;
3437 while (TRUE) {
3438 pos = (left + right) / 2;
3439
3440 code1 = (guint8 *)methods [pos];
3441 if (pos + 1 == methods_len) {
3442 if (code1 >= amodule->jit_code_start && code1 < amodule->jit_code_end)
3443 code2 = amodule->jit_code_end;
3444 else
3445 code2 = amodule->llvm_code_end;
3446 } else {
3447 code2 = (guint8 *)methods [pos + 1];
3448 }
3449
3450 if (code < code1)
3451 right = pos;
3452 else if (code >= code2)
3453 left = pos + 1;
3454 else
3455 break;
3456 }
3457
3458 g_assert (addr >= methods [pos]);
3459 if (pos + 1 < methods_len)
3460 g_assert (addr < methods [pos + 1]);
3461 method_index = amodule->sorted_method_indexes [pos];
3462
3463 /* In async mode, jinfo is not added to the normal jit info table, so have to cache it ourselves */
3464 if (async) {
3465 JitInfoMap *table = amodule->async_jit_info_table;
3466 int len;
3467
3468 if (table) {
3469 len = table [0].method_index;
3470 for (i = 1; i < len; ++i) {
3471 if (table [i].method_index == method_index)
3472 return table [i].jinfo;
3473 }
3474 }
3475 }
3476
3477 code = (guint8 *)amodule->methods [method_index];
3478 ex_info = &amodule->blob [mono_aot_get_offset (amodule->ex_info_offsets, method_index)];
3479
3480 if (pos == methods_len - 1) {
3481 if (code >= amodule->jit_code_start && code < amodule->jit_code_end)
3482 code_len = amodule->jit_code_end - code;
3483 else
3484 code_len = amodule->llvm_code_end - code;
3485 } else {
3486 code_len = (guint8*)methods [pos + 1] - (guint8*)methods [pos];
3487 }
3488
3489 g_assert ((guint8*)code <= (guint8*)addr && (guint8*)addr < (guint8*)code + code_len);
3490
3491 /* Might be a wrapper/extra method */
3492 if (!async) {
3493 if (amodule->extra_methods) {
3494 amodule_lock (amodule);
3495 method = (MonoMethod *)g_hash_table_lookup (amodule->extra_methods, GUINT_TO_POINTER (method_index));
3496 amodule_unlock (amodule);
3497 } else {
3498 method = NULL;
3499 }
3500
3501 if (!method) {
3502 if (method_index >= image->tables [MONO_TABLE_METHOD].rows) {
3503 /*
3504 * This is hit for extra methods which are called directly, so they are
3505 * not in amodule->extra_methods.
3506 */
3507 table_len = amodule->extra_method_info_offsets [0];
3508 table = amodule->extra_method_info_offsets + 1;
3509 left = 0;
3510 right = table_len;
3511 pos = 0;
3512
3513 /* Binary search */
3514 while (TRUE) {
3515 pos = ((left + right) / 2);
3516
3517 g_assert (pos < table_len);
3518
3519 if (table [pos * 2] < method_index)
3520 left = pos + 1;
3521 else if (table [pos * 2] > method_index)
3522 right = pos;
3523 else
3524 break;
3525 }
3526
3527 p = amodule->blob + table [(pos * 2) + 1];
3528 method = decode_resolve_method_ref (amodule, p, &p, error);
3529 mono_error_cleanup (error); /* FIXME don't swallow the error */
3530 if (!method)
3531 /* Happens when a random address is passed in which matches a not-yey called wrapper encoded using its name */
3532 return NULL;
3533 } else {
3534 ERROR_DECL (error);
3535 token = mono_metadata_make_token (MONO_TABLE_METHOD, method_index + 1);
3536 method = mono_get_method_checked (image, token, NULL, NULL, error);
3537 if (!method)
3538 g_error ("AOT runtime could not load method due to %s", mono_error_get_message (error)); /* FIXME don't swallow the error */
3539 }
3540 }
3541 /* FIXME: */
3542 g_assert (method);
3543 }
3544
3545 //printf ("F: %s\n", mono_method_full_name (method, TRUE));
3546
3547 jinfo = decode_exception_debug_info (amodule, domain, method, ex_info, code, code_len);
3548
3549 g_assert ((guint8*)addr >= (guint8*)jinfo->code_start);
3550
3551 /* Add it to the normal JitInfo tables */
3552 if (async) {
3553 JitInfoMap *old_table, *new_table;
3554 int len;
3555
3556 /*
3557 * Use a simple inmutable table with linear search to cache async jit info entries.
3558 * This assumes that the number of entries is small.
3559 */
3560 while (TRUE) {
3561 /* Copy the table, adding a new entry at the end */
3562 old_table = amodule->async_jit_info_table;
3563 if (old_table)
3564 len = old_table[0].method_index;
3565 else
3566 len = 1;
3567 new_table = (JitInfoMap *)alloc0_jit_info_data (domain, (len + 1) * sizeof (JitInfoMap), async);
3568 if (old_table)
3569 memcpy (new_table, old_table, len * sizeof (JitInfoMap));
3570 new_table [0].method_index = len + 1;
3571 new_table [len].method_index = method_index;
3572 new_table [len].jinfo = jinfo;
3573 /* Publish it */
3574 mono_memory_barrier ();
3575 if (mono_atomic_cas_ptr ((volatile gpointer *)&amodule->async_jit_info_table, new_table, old_table) == old_table)
3576 break;
3577 }
3578 } else {
3579 mono_jit_info_table_add (domain, jinfo);
3580 }
3581
3582 if ((guint8*)addr >= (guint8*)jinfo->code_start + jinfo->code_size)
3583 /* addr is in the padding between methods, see the adjustment of code_size in decode_exception_debug_info () */
3584 return NULL;
3585
3586 return jinfo;
3587 }
3588
3589 static gboolean
3590 decode_patch (MonoAotModule *aot_module, MonoMemPool *mp, MonoJumpInfo *ji, guint8 *buf, guint8 **endbuf)
3591 {
3592 ERROR_DECL (error);
3593 guint8 *p = buf;
3594 gpointer *table;
3595 MonoImage *image;
3596 int i;
3597
3598 switch (ji->type) {
3599 case MONO_PATCH_INFO_METHOD:
3600 case MONO_PATCH_INFO_METHOD_JUMP:
3601 case MONO_PATCH_INFO_ICALL_ADDR:
3602 case MONO_PATCH_INFO_ICALL_ADDR_CALL:
3603 case MONO_PATCH_INFO_METHOD_RGCTX:
3604 case MONO_PATCH_INFO_METHOD_CODE_SLOT: {
3605 MethodRef ref;
3606 gboolean res;
3607
3608 res = decode_method_ref (aot_module, &ref, p, &p, error);
3609 mono_error_assert_ok (error); /* FIXME don't swallow the error */
3610 if (!res)
3611 goto cleanup;
3612
3613 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)) {
3614 ji->data.target = mono_create_ftnptr (mono_domain_get (), mono_create_jit_trampoline_from_token (ref.image, ref.token));
3615 ji->type = MONO_PATCH_INFO_ABS;
3616 }
3617 else {
3618 if (ref.method) {
3619 ji->data.method = ref.method;
3620 }else {
3621 ERROR_DECL (error);
3622 ji->data.method = mono_get_method_checked (ref.image, ref.token, NULL, NULL, error);
3623 if (!ji->data.method)
3624 g_error ("AOT Runtime could not load method due to %s", mono_error_get_message (error)); /* FIXME don't swallow the error */
3625 }
3626 g_assert (ji->data.method);
3627 mono_class_init (ji->data.method->klass);
3628 }
3629 break;
3630 }
3631 case MONO_PATCH_INFO_INTERNAL_METHOD:
3632 case MONO_PATCH_INFO_JIT_ICALL_ADDR:
3633 case MONO_PATCH_INFO_JIT_ICALL_ADDR_NOCALL: {
3634 guint32 len = decode_value (p, &p);
3635
3636 ji->data.name = (char*)p;
3637 p += len + 1;
3638 break;
3639 }
3640 case MONO_PATCH_INFO_METHODCONST:
3641 /* Shared */
3642 ji->data.method = decode_resolve_method_ref (aot_module, p, &p, error);
3643 mono_error_cleanup (error); /* FIXME don't swallow the error */
3644 if (!ji->data.method)
3645 goto cleanup;
3646 break;
3647 case MONO_PATCH_INFO_VTABLE:
3648 case MONO_PATCH_INFO_CLASS:
3649 case MONO_PATCH_INFO_IID:
3650 case MONO_PATCH_INFO_ADJUSTED_IID:
3651 /* Shared */
3652 ji->data.klass = decode_klass_ref (aot_module, p, &p, error);
3653 mono_error_cleanup (error); /* FIXME don't swallow the error */
3654 if (!ji->data.klass)
3655 goto cleanup;
3656 break;
3657 case MONO_PATCH_INFO_DELEGATE_TRAMPOLINE:
3658 ji->data.del_tramp = (MonoDelegateClassMethodPair *)mono_mempool_alloc0 (mp, sizeof (MonoDelegateClassMethodPair));
3659 ji->data.del_tramp->klass = decode_klass_ref (aot_module, p, &p, error);
3660 mono_error_cleanup (error); /* FIXME don't swallow the error */
3661 if (!ji->data.del_tramp->klass)
3662 goto cleanup;
3663 if (decode_value (p, &p)) {
3664 ji->data.del_tramp->method = decode_resolve_method_ref (aot_module, p, &p, error);
3665 mono_error_cleanup (error); /* FIXME don't swallow the error */
3666 if (!ji->data.del_tramp->method)
3667 goto cleanup;
3668 }
3669 ji->data.del_tramp->is_virtual = decode_value (p, &p) ? TRUE : FALSE;
3670 break;
3671 case MONO_PATCH_INFO_IMAGE:
3672 ji->data.image = load_image (aot_module, decode_value (p, &p), error);
3673 mono_error_cleanup (error); /* FIXME don't swallow the error */
3674 if (!ji->data.image)
3675 goto cleanup;
3676 break;
3677 case MONO_PATCH_INFO_FIELD:
3678 case MONO_PATCH_INFO_SFLDA:
3679 /* Shared */
3680 ji->data.field = decode_field_info (aot_module, p, &p);
3681 if (!ji->data.field)
3682 goto cleanup;
3683 break;
3684 case MONO_PATCH_INFO_SWITCH:
3685 ji->data.table = (MonoJumpInfoBBTable *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoBBTable));
3686 ji->data.table->table_size = decode_value (p, &p);
3687 table = (void **)mono_domain_alloc (mono_domain_get (), sizeof (gpointer) * ji->data.table->table_size);
3688 ji->data.table->table = (MonoBasicBlock**)table;
3689 for (i = 0; i < ji->data.table->table_size; i++)
3690 table [i] = (gpointer)(gssize)decode_value (p, &p);
3691 break;
3692 case MONO_PATCH_INFO_R4: {
3693 guint32 val;
3694
3695 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (float));
3696 val = decode_value (p, &p);
3697 *(float*)ji->data.target = *(float*)&val;
3698 break;
3699 }
3700 case MONO_PATCH_INFO_R8: {
3701 guint32 val [2];
3702 guint64 v;
3703
3704 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (double));
3705
3706 val [0] = decode_value (p, &p);
3707 val [1] = decode_value (p, &p);
3708 v = ((guint64)val [1] << 32) | ((guint64)val [0]);
3709 *(double*)ji->data.target = *(double*)&v;
3710 break;
3711 }
3712 case MONO_PATCH_INFO_LDSTR:
3713 image = load_image (aot_module, decode_value (p, &p), error);
3714 mono_error_cleanup (error); /* FIXME don't swallow the error */
3715 if (!image)
3716 goto cleanup;
3717 ji->data.token = mono_jump_info_token_new (mp, image, MONO_TOKEN_STRING + decode_value (p, &p));
3718 break;
3719 case MONO_PATCH_INFO_RVA:
3720 case MONO_PATCH_INFO_DECLSEC:
3721 case MONO_PATCH_INFO_LDTOKEN:
3722 case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
3723 /* Shared */
3724 image = load_image (aot_module, decode_value (p, &p), error);
3725 mono_error_cleanup (error); /* FIXME don't swallow the error */
3726 if (!image)
3727 goto cleanup;
3728 ji->data.token = mono_jump_info_token_new (mp, image, decode_value (p, &p));
3729
3730 ji->data.token->has_context = decode_value (p, &p);
3731 if (ji->data.token->has_context) {
3732 gboolean res = decode_generic_context (aot_module, &ji->data.token->context, p, &p, error);
3733 mono_error_cleanup (error); /* FIXME don't swallow the error */
3734 if (!res)
3735 goto cleanup;
3736 }
3737 break;
3738 case MONO_PATCH_INFO_EXC_NAME:
3739 ji->data.klass = decode_klass_ref (aot_module, p, &p, error);
3740 mono_error_cleanup (error); /* FIXME don't swallow the error */
3741 if (!ji->data.klass)
3742 goto cleanup;
3743 ji->data.name = m_class_get_name (ji->data.klass);
3744 break;
3745 case MONO_PATCH_INFO_METHOD_REL:
3746 ji->data.offset = decode_value (p, &p);
3747 break;
3748 case MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG:
3749 case MONO_PATCH_INFO_GC_CARD_TABLE_ADDR:
3750 case MONO_PATCH_INFO_GC_NURSERY_START:
3751 case MONO_PATCH_INFO_GC_NURSERY_BITS:
3752 case MONO_PATCH_INFO_PROFILER_ALLOCATION_COUNT:
3753 case MONO_PATCH_INFO_PROFILER_CLAUSE_COUNT:
3754 break;
3755 case MONO_PATCH_INFO_CASTCLASS_CACHE:
3756 ji->data.index = decode_value (p, &p);
3757 break;
3758 case MONO_PATCH_INFO_RGCTX_FETCH:
3759 case MONO_PATCH_INFO_RGCTX_SLOT_INDEX: {
3760 gboolean res;
3761 MonoJumpInfoRgctxEntry *entry;
3762 guint32 offset, val;
3763 guint8 *p2;
3764
3765 offset = decode_value (p, &p);
3766 val = decode_value (p, &p);
3767
3768 entry = (MonoJumpInfoRgctxEntry *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
3769 p2 = aot_module->blob + offset;
3770 entry->method = decode_resolve_method_ref (aot_module, p2, &p2, error);
3771 entry->in_mrgctx = ((val & 1) > 0) ? TRUE : FALSE;
3772 entry->info_type = (MonoRgctxInfoType)((val >> 1) & 0xff);
3773 entry->data = (MonoJumpInfo *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
3774 entry->data->type = (MonoJumpInfoType)((val >> 9) & 0xff);
3775 mono_error_cleanup (error); /* FIXME don't swallow the error */
3776
3777 res = decode_patch (aot_module, mp, entry->data, p, &p);
3778 if (!res)
3779 goto cleanup;
3780 ji->data.rgctx_entry = entry;
3781 break;
3782 }
3783 case MONO_PATCH_INFO_SEQ_POINT_INFO:
3784 case MONO_PATCH_INFO_AOT_MODULE:
3785 case MONO_PATCH_INFO_MSCORLIB_GOT_ADDR:
3786 break;
3787 case MONO_PATCH_INFO_SIGNATURE:
3788 case MONO_PATCH_INFO_GSHAREDVT_IN_WRAPPER:
3789 ji->data.target = decode_signature (aot_module, p, &p);
3790 break;
3791 case MONO_PATCH_INFO_GSHAREDVT_CALL: {
3792 MonoJumpInfoGSharedVtCall *info = (MonoJumpInfoGSharedVtCall *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoGSharedVtCall));
3793 info->sig = decode_signature (aot_module, p, &p);
3794 g_assert (info->sig);
3795 info->method = decode_resolve_method_ref (aot_module, p, &p, error);
3796 mono_error_assert_ok (error); /* FIXME don't swallow the error */
3797
3798 ji->data.target = info;
3799 break;
3800 }
3801 case MONO_PATCH_INFO_GSHAREDVT_METHOD: {
3802 MonoGSharedVtMethodInfo *info = (MonoGSharedVtMethodInfo *)mono_mempool_alloc0 (mp, sizeof (MonoGSharedVtMethodInfo));
3803 int i;
3804
3805 info->method = decode_resolve_method_ref (aot_module, p, &p, error);
3806 mono_error_assert_ok (error); /* FIXME don't swallow the error */
3807
3808 info->num_entries = decode_value (p, &p);
3809 info->count_entries = info->num_entries;
3810 info->entries = (MonoRuntimeGenericContextInfoTemplate *)mono_mempool_alloc0 (mp, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->num_entries);
3811 for (i = 0; i < info->num_entries; ++i) {
3812 MonoRuntimeGenericContextInfoTemplate *template_ = &info->entries [i];
3813
3814 template_->info_type = (MonoRgctxInfoType)decode_value (p, &p);
3815 switch (mini_rgctx_info_type_to_patch_info_type (template_->info_type)) {
3816 case MONO_PATCH_INFO_CLASS: {
3817 MonoClass *klass = decode_klass_ref (aot_module, p, &p, error);
3818 mono_error_cleanup (error); /* FIXME don't swallow the error */
3819 if (!klass)
3820 goto cleanup;
3821 template_->data = m_class_get_byval_arg (klass);
3822 break;
3823 }
3824 case MONO_PATCH_INFO_FIELD:
3825 template_->data = decode_field_info (aot_module, p, &p);
3826 if (!template_->data)
3827 goto cleanup;
3828 break;
3829 default:
3830 g_assert_not_reached ();
3831 break;
3832 }
3833 }
3834 ji->data.target = info;
3835 break;
3836 }
3837 case MONO_PATCH_INFO_LDSTR_LIT: {
3838 int len = decode_value (p, &p);
3839 char *s;
3840
3841 s = (char *)mono_mempool_alloc0 (mp, len + 1);
3842 memcpy (s, p, len + 1);
3843 p += len + 1;
3844
3845 ji->data.target = s;
3846 break;
3847 }
3848 case MONO_PATCH_INFO_VIRT_METHOD: {
3849 MonoJumpInfoVirtMethod *info = (MonoJumpInfoVirtMethod *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoVirtMethod));
3850
3851 info->klass = decode_klass_ref (aot_module, p, &p, error);
3852 mono_error_assert_ok (error); /* FIXME don't swallow the error */
3853
3854 info->method = decode_resolve_method_ref (aot_module, p, &p, error);
3855 mono_error_assert_ok (error); /* FIXME don't swallow the error */
3856
3857 ji->data.target = info;
3858 break;
3859 }
3860 case MONO_PATCH_INFO_GC_SAFE_POINT_FLAG:
3861 case MONO_PATCH_INFO_JIT_THREAD_ATTACH:
3862 break;
3863 case MONO_PATCH_INFO_GET_TLS_TRAMP:
3864 case MONO_PATCH_INFO_SET_TLS_TRAMP:
3865 case MONO_PATCH_INFO_AOT_JIT_INFO:
3866 ji->data.index = decode_value (p, &p);
3867 break;
3868 default:
3869 g_warning ("unhandled type %d", ji->type);
3870 g_assert_not_reached ();
3871 }
3872
3873 *endbuf = p;
3874
3875 return TRUE;
3876
3877 cleanup:
3878 return FALSE;
3879 }
3880
3881 /*
3882 * decode_patches:
3883 *
3884 * Decode a list of patches identified by the got offsets in GOT_OFFSETS. Return an array of
3885 * MonoJumpInfo structures allocated from MP.
3886 */
3887 static MonoJumpInfo*
3888 decode_patches (MonoAotModule *amodule, MonoMemPool *mp, int n_patches, gboolean llvm, guint32 *got_offsets)
3889 {
3890 MonoJumpInfo *patches;
3891 MonoJumpInfo *ji;
3892 gpointer *got;
3893 guint32 *got_info_offsets;
3894 int i;
3895 gboolean res;
3896
3897 if (llvm) {
3898 got = amodule->llvm_got;
3899 got_info_offsets = (guint32 *)amodule->llvm_got_info_offsets;
3900 } else {
3901 got = amodule->got;
3902 got_info_offsets = (guint32 *)amodule->got_info_offsets;
3903 }
3904
3905 patches = (MonoJumpInfo *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo) * n_patches);
3906 for (i = 0; i < n_patches; ++i) {
3907 guint8 *p = amodule->blob + mono_aot_get_offset (got_info_offsets, got_offsets [i]);
3908
3909 ji = &patches [i];
3910 ji->type = (MonoJumpInfoType)decode_value (p, &p);
3911
3912 /* See load_method () for SFLDA */
3913 if (got && got [got_offsets [i]] && ji->type != MONO_PATCH_INFO_SFLDA) {
3914 /* Already loaded */
3915 } else {
3916 res = decode_patch (amodule, mp, ji, p, &p);
3917 if (!res)
3918 return NULL;
3919 }
3920 }
3921
3922 return patches;
3923 }
3924
3925 static MonoJumpInfo*
3926 load_patch_info (MonoAotModule *amodule, MonoMemPool *mp, int n_patches,
3927 gboolean llvm, guint32 **got_slots,
3928 guint8 *buf, guint8 **endbuf)
3929 {
3930 MonoJumpInfo *patches;
3931 int pindex;
3932 guint8 *p;
3933
3934 p = buf;
3935
3936 *got_slots = (guint32 *)g_malloc (sizeof (guint32) * n_patches);
3937 for (pindex = 0; pindex < n_patches; ++pindex) {
3938 (*got_slots)[pindex] = decode_value (p, &p);
3939 }
3940
3941 patches = decode_patches (amodule, mp, n_patches, llvm, *got_slots);
3942 if (!patches) {
3943 g_free (*got_slots);
3944 *got_slots = NULL;
3945 return NULL;
3946 }
3947
3948 *endbuf = p;
3949 return patches;
3950 }
3951
3952 static void
3953 register_jump_target_got_slot (MonoDomain *domain, MonoMethod *method, gpointer *got_slot)
3954 {
3955 /*
3956 * Jump addresses cannot be patched by the trampoline code since it
3957 * does not have access to the caller's address. Instead, we collect
3958 * the addresses of the GOT slots pointing to a method, and patch
3959 * them after the method has been compiled.
3960 */
3961 MonoJitDomainInfo *info = domain_jit_info (domain);
3962 GSList *list;
3963 MonoMethod *shared_method = mini_method_to_shared (method);
3964 method = shared_method ? shared_method : method;
3965
3966 mono_domain_lock (domain);
3967 if (!info->jump_target_got_slot_hash)
3968 info->jump_target_got_slot_hash = g_hash_table_new (NULL, NULL);
3969 list = (GSList *)g_hash_table_lookup (info->jump_target_got_slot_hash, method);
3970 list = g_slist_prepend (list, got_slot);
3971 g_hash_table_insert (info->jump_target_got_slot_hash, method, list);
3972 mono_domain_unlock (domain);
3973 }
3974
3975 /*
3976 * load_method:
3977 *
3978 * Load the method identified by METHOD_INDEX from the AOT image. Return a
3979 * pointer to the native code of the method, or NULL if not found.
3980 * METHOD might not be set if the caller only has the image/token info.
3981 */
3982 static gpointer
3983 load_method (MonoDomain *domain, MonoAotModule *amodule, MonoImage *image, MonoMethod *method, guint32 token, int method_index,
3984 MonoError *error)
3985 {
3986 MonoJitInfo *jinfo = NULL;
3987 guint8 *code = NULL, *info;
3988 gboolean res;
3989
3990 error_init (error);
3991
3992 init_amodule_got (amodule);
3993
3994 if (domain != mono_get_root_domain ())
3995 /* Non shared AOT code can't be used in other appdomains */
3996 return NULL;
3997
3998 if (amodule->out_of_date)
3999 return NULL;
4000
4001 if (amodule->info.llvm_get_method) {
4002 /*
4003 * Obtain the method address by calling a generated function in the LLVM module.
4004 */
4005 gpointer (*get_method) (int) = (gpointer (*)(int))amodule->info.llvm_get_method;
4006 code = (guint8 *)get_method (method_index);
4007 }
4008
4009 if (!code) {
4010 /* JITted method */
4011 if (amodule->methods [method_index] == GINT_TO_POINTER (-1)) {
4012 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
4013 char *full_name;
4014
4015 if (!method) {
4016 method = mono_get_method_checked (image, token, NULL, NULL, error);
4017 if (!method)
4018 return NULL;
4019 }
4020 if (!(method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL)) {
4021 full_name = mono_method_full_name (method, TRUE);
4022 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT: NOT FOUND: %s.", full_name);
4023 g_free (full_name);
4024 }
4025 }
4026 return NULL;
4027 }
4028 code = (guint8 *)amodule->methods [method_index];
4029 }
4030
4031 info = &amodule->blob [mono_aot_get_offset (amodule->method_info_offsets, method_index)];
4032
4033 if (!amodule->methods_loaded) {
4034 amodule_lock (amodule);
4035 if (!amodule->methods_loaded) {
4036 guint32 *loaded;
4037
4038 loaded = g_new0 (guint32, amodule->info.nmethods / 32 + 1);
4039 mono_memory_barrier ();
4040 amodule->methods_loaded = loaded;
4041 }
4042 amodule_unlock (amodule);
4043 }
4044
4045 if ((amodule->methods_loaded [method_index / 32] >> (method_index % 32)) & 0x1)
4046 return code;
4047
4048 if (mono_last_aot_method != -1) {
4049 gint32 methods_aot = mono_atomic_load_i32 (&mono_jit_stats.methods_aot);
4050 if (methods_aot >= mono_last_aot_method)
4051 return NULL;
4052 else if (methods_aot == mono_last_aot_method - 1) {
4053 if (!method) {
4054 method = mono_get_method_checked (image, token, NULL, NULL, error);
4055 if (!method)
4056 return NULL;
4057 }
4058 if (method) {
4059 char *name = mono_method_full_name (method, TRUE);
4060 g_print ("LAST AOT METHOD: %s.\n", name);
4061 g_free (name);
4062 } else {
4063 g_print ("LAST AOT METHOD: %p %d\n", code, method_index);
4064 }
4065 }
4066 }
4067
4068 if (!(is_llvm_code (amodule, code) && (amodule->info.flags & MONO_AOT_FILE_FLAG_LLVM_ONLY)) ||
4069 (mono_llvm_only && method && method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED)) {
4070 res = init_method (amodule, method_index, method, NULL, NULL, error);
4071 if (!res)
4072 goto cleanup;
4073 }
4074
4075 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
4076 char *full_name;
4077
4078 if (!method) {
4079 method = mono_get_method_checked (image, token, NULL, NULL, error);
4080 if (!method)
4081 return NULL;
4082 }
4083
4084 full_name = mono_method_full_name (method, TRUE);
4085
4086 if (!jinfo)
4087 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
4088
4089 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT: FOUND method %s [%p - %p %p]", full_name, code, code + jinfo->code_size, info);
4090 g_free (full_name);
4091 }
4092
4093 amodule_lock (amodule);
4094
4095 init_plt (amodule);
4096
4097 mono_atomic_inc_i32 (&mono_jit_stats.methods_aot);
4098
4099 if (method && method->wrapper_type)
4100 g_hash_table_insert (amodule->method_to_code, method, code);
4101
4102 /* Commit changes since methods_loaded is accessed outside the lock */
4103 mono_memory_barrier ();
4104
4105 amodule->methods_loaded [method_index / 32] |= 1 << (method_index % 32);
4106
4107 amodule_unlock (amodule);
4108
4109 if (MONO_PROFILER_ENABLED (jit_begin) || MONO_PROFILER_ENABLED (jit_done)) {
4110 MonoJitInfo *jinfo;
4111
4112 if (!method) {
4113 method = mono_get_method_checked (amodule->assembly->image, token, NULL, NULL, error);
4114 if (!method)
4115 return NULL;
4116 }
4117 MONO_PROFILER_RAISE (jit_begin, (method));
4118 jinfo = mono_jit_info_table_find (domain, code);
4119 g_assert (jinfo);
4120 MONO_PROFILER_RAISE (jit_done, (method, jinfo));
4121 }
4122
4123 return code;
4124
4125 cleanup:
4126 if (jinfo)
4127 g_free (jinfo);
4128
4129 return NULL;
4130 }
4131
4132 /** find_aot_method_in_amodule
4133 *
4134 * \param code_amodule The AOT module containing the code pointer
4135 * \param method The method to find the code index for
4136 * \param hash_full The hash for the method
4137 */
4138 static guint32
4139 find_aot_method_in_amodule (MonoAotModule *code_amodule, MonoMethod *method, guint32 hash_full)
4140 {
4141 ERROR_DECL (error);
4142 guint32 table_size, entry_size, hash;
4143 guint32 *table, *entry;
4144 guint32 index;
4145 static guint32 n_extra_decodes;
4146
4147 // The AOT module containing the MonoMethod
4148 // The reference to the metadata amodule will differ among multiple dedup methods
4149 // which mangle to the same name but live in different assemblies. This leads to
4150 // the caching breaking. The solution seems to be to cache using the "metadata" amodule.
4151 MonoAotModule *metadata_amodule = (MonoAotModule *)m_class_get_image (method->klass)->aot_module;
4152
4153 if (!metadata_amodule || metadata_amodule->out_of_date || !code_amodule || code_amodule->out_of_date)
4154 return 0xffffff;
4155
4156 table_size = code_amodule->extra_method_table [0];
4157 hash = hash_full % table_size;
4158 table = code_amodule->extra_method_table + 1;
4159 entry_size = 3;
4160
4161 entry = &table [hash * entry_size];
4162
4163 if (entry [0] == 0)
4164 return 0xffffff;
4165
4166 index = 0xffffff;
4167 while (TRUE) {
4168 guint32 key = entry [0];
4169 guint32 value = entry [1];
4170 guint32 next = entry [entry_size - 1];
4171 MonoMethod *m;
4172 guint8 *p, *orig_p;
4173
4174 p = code_amodule->blob + key;
4175 orig_p = p;
4176
4177 amodule_lock (metadata_amodule);
4178 if (!metadata_amodule->method_ref_to_method)
4179 metadata_amodule->method_ref_to_method = g_hash_table_new (NULL, NULL);
4180 m = (MonoMethod *)g_hash_table_lookup (metadata_amodule->method_ref_to_method, p);
4181 amodule_unlock (metadata_amodule);
4182 if (!m) {
4183 m = decode_resolve_method_ref_with_target (code_amodule, method, p, &p, error);
4184 mono_error_cleanup (error); /* FIXME don't swallow the error */
4185 /*
4186 * Can't catche runtime invoke wrappers since it would break
4187 * the check in decode_method_ref_with_target ().
4188 */
4189 if (m && m->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE) {
4190 amodule_lock (metadata_amodule);
4191 g_hash_table_insert (metadata_amodule->method_ref_to_method, orig_p, m);
4192 amodule_unlock (metadata_amodule);
4193 }
4194 }
4195 if (m == method) {
4196 index = value;
4197 break;
4198 }
4199
4200 /* Methods decoded needlessly */
4201 if (m) {
4202 //printf ("%d %s %s %p\n", n_extra_decodes, mono_method_full_name (method, TRUE), mono_method_full_name (m, TRUE), orig_p);
4203 n_extra_decodes ++;
4204 }
4205
4206 if (next != 0)
4207 entry = &table [next * entry_size];
4208 else
4209 break;
4210 }
4211
4212 if (index != 0xffffff)
4213 g_assert (index < code_amodule->info.nmethods);
4214
4215 return index;
4216 }
4217
4218 static void
4219 add_module_cb (gpointer key, gpointer value, gpointer user_data)
4220 {
4221 g_ptr_array_add ((GPtrArray*)user_data, value);
4222 }
4223
4224 gboolean
4225 mono_aot_can_dedup (MonoMethod *method)
4226 {
4227 gboolean not_normal_gshared = method->is_inflated && !mono_method_is_generic_sharable_full (method, TRUE, FALSE, FALSE);
4228 gboolean extra_method = (method->wrapper_type != MONO_WRAPPER_NONE) || not_normal_gshared;
4229
4230 return extra_method;
4231 }
4232
4233
4234 /*
4235 * find_aot_method:
4236 *
4237 * Try finding METHOD in the extra_method table in all AOT images.
4238 * Return its method index, or 0xffffff if not found. Set OUT_AMODULE to the AOT
4239 * module where the method was found.
4240 */
4241 static guint32
4242 find_aot_method (MonoMethod *method, MonoAotModule **out_amodule)
4243 {
4244 guint32 index;
4245 GPtrArray *modules;
4246 int i;
4247 guint32 hash = mono_aot_method_hash (method);
4248
4249 /* Try the place we expect to have moved the method only
4250 * We don't probe, as that causes hard-to-debug issues when we fail
4251 * to find the method */
4252 if (container_amodule && mono_aot_can_dedup (method)) {
4253 *out_amodule = container_amodule;
4254 index = find_aot_method_in_amodule (container_amodule, method, hash);
4255 return index;
4256 }
4257
4258 /* Try the method's module first */
4259 *out_amodule = (MonoAotModule *)m_class_get_image (method->klass)->aot_module;
4260 index = find_aot_method_in_amodule ((MonoAotModule *)m_class_get_image (method->klass)->aot_module, method, hash);
4261 if (index != 0xffffff)
4262 return index;
4263
4264 /*
4265 * Try all other modules.
4266 * This is needed because generic instances klass->image points to the image
4267 * containing the generic definition, but the native code is generated to the
4268 * AOT image which contains the reference.
4269 */
4270
4271 /* Make a copy to avoid doing the search inside the aot lock */
4272 modules = g_ptr_array_new ();
4273 mono_aot_lock ();
4274 g_hash_table_foreach (aot_modules, add_module_cb, modules);
4275 mono_aot_unlock ();
4276
4277 index = 0xffffff;
4278 for (i = 0; i < modules->len; ++i) {
4279 MonoAotModule *amodule = (MonoAotModule *)g_ptr_array_index (modules, i);
4280
4281 if (amodule != m_class_get_image (method->klass)->aot_module)
4282 index = find_aot_method_in_amodule (amodule, method, hash);
4283 if (index != 0xffffff) {
4284 *out_amodule = amodule;
4285 break;
4286 }
4287 }
4288
4289 g_ptr_array_free (modules, TRUE);
4290
4291 return index;
4292 }
4293
4294 guint32
4295 mono_aot_find_method_index (MonoMethod *method)
4296 {
4297 MonoAotModule *out_amodule;
4298 return find_aot_method (method, &out_amodule);
4299 }
4300
4301 static gboolean
4302 init_method (MonoAotModule *amodule, guint32 method_index, MonoMethod *method, MonoClass *init_class, MonoGenericContext *context, MonoError *error)
4303 {
4304 MonoDomain *domain = mono_domain_get ();
4305 MonoMemPool *mp;
4306 MonoClass *klass_to_run_ctor = NULL;
4307 gboolean from_plt = method == NULL;
4308 int pindex, n_patches;
4309 guint8 *p;
4310 MonoJitInfo *jinfo = NULL;
4311 guint8 *code, *info;
4312
4313 error_init (error);
4314
4315 code = (guint8 *)amodule->methods [method_index];
4316 info = &amodule->blob [mono_aot_get_offset (amodule->method_info_offsets, method_index)];
4317
4318 p = info;
4319
4320 //does the method's class has a cctor?
4321 if (decode_value (p, &p) == 1)
4322 klass_to_run_ctor = decode_klass_ref (amodule, p, &p, error);
4323 if (!is_ok (error))
4324 return FALSE;
4325
4326 //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
4327 if (method)
4328 klass_to_run_ctor = method->klass;
4329
4330 n_patches = decode_value (p, &p);
4331
4332 if (n_patches) {
4333 MonoJumpInfo *patches;
4334 guint32 *got_slots;
4335 gboolean llvm;
4336 gpointer *got;
4337
4338 mp = mono_mempool_new ();
4339
4340 if ((gpointer)code >= amodule->info.jit_code_start && (gpointer)code <= amodule->info.jit_code_end) {
4341 llvm = FALSE;
4342 got = amodule->got;
4343 } else {
4344 llvm = TRUE;
4345 got = amodule->llvm_got;
4346 g_assert (got);
4347 }
4348
4349 patches = load_patch_info (amodule, mp, n_patches, llvm, &got_slots, p, &p);
4350 if (patches == NULL) {
4351 mono_mempool_destroy (mp);
4352 goto cleanup;
4353 }
4354
4355 for (pindex = 0; pindex < n_patches; ++pindex) {
4356 MonoJumpInfo *ji = &patches [pindex];
4357 gpointer addr;
4358
4359 /*
4360 * For SFLDA, we need to call resolve_patch_target () since the GOT slot could have
4361 * been initialized by load_method () for a static cctor before the cctor has
4362 * finished executing (#23242).
4363 */
4364 if (!got [got_slots [pindex]] || ji->type == MONO_PATCH_INFO_SFLDA) {
4365 /* In llvm-only made, we might encounter shared methods */
4366 if (mono_llvm_only && ji->type == MONO_PATCH_INFO_METHOD && mono_method_check_context_used (ji->data.method)) {
4367 g_assert (context);
4368 ji->data.method = mono_class_inflate_generic_method_checked (ji->data.method, context, error);
4369 if (!mono_error_ok (error)) {
4370 g_free (got_slots);
4371 mono_mempool_destroy (mp);
4372 return FALSE;
4373 }
4374 }
4375 /* This cannot be resolved in mono_resolve_patch_target () */
4376 if (ji->type == MONO_PATCH_INFO_AOT_JIT_INFO) {
4377 // FIXME: Lookup using the index
4378 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
4379 ji->type = MONO_PATCH_INFO_ABS;
4380 ji->data.target = jinfo;
4381 }
4382 addr = mono_resolve_patch_target (method, domain, code, ji, TRUE, error);
4383 if (!mono_error_ok (error)) {
4384 g_free (got_slots);
4385 mono_mempool_destroy (mp);
4386 return FALSE;
4387 }
4388 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
4389 addr = mono_create_ftnptr (domain, addr);
4390 mono_memory_barrier ();
4391 got [got_slots [pindex]] = addr;
4392 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
4393 register_jump_target_got_slot (domain, ji->data.method, &(got [got_slots [pindex]]));
4394 }
4395 ji->type = MONO_PATCH_INFO_NONE;
4396 }
4397
4398 g_free (got_slots);
4399
4400 mono_mempool_destroy (mp);
4401 }
4402
4403 if (mini_get_debug_options ()->load_aot_jit_info_eagerly)
4404 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
4405
4406 gboolean inited_ok = TRUE;
4407 if (init_class) {
4408 MonoVTable *vt = mono_class_vtable_checked (domain, init_class, error);
4409 if (!is_ok (error))
4410 inited_ok = FALSE;
4411 else
4412 inited_ok = mono_runtime_class_init_full (vt, error);
4413 } else if (from_plt && klass_to_run_ctor && !mono_class_is_gtd (klass_to_run_ctor)) {
4414 MonoVTable *vt = mono_class_vtable_checked (domain, klass_to_run_ctor, error);
4415 if (!is_ok (error))
4416 inited_ok = FALSE;
4417 else
4418 inited_ok = mono_runtime_class_init_full (vt, error);
4419 }
4420 if (!inited_ok)
4421 return FALSE;
4422
4423 return TRUE;
4424
4425 cleanup:
4426 if (jinfo)
4427 g_free (jinfo);
4428
4429 return FALSE;
4430 }
4431
4432 static void
4433 init_llvmonly_method (MonoAotModule *amodule, guint32 method_index, MonoMethod *method, MonoClass *init_class, MonoGenericContext *context)
4434 {
4435 gboolean res;
4436 ERROR_DECL (error);
4437
4438 res = init_method (amodule, method_index, method, init_class, context, error);
4439 if (!is_ok (error)) {
4440 MonoException *ex = mono_error_convert_to_exception (error);
4441 /* Its okay to raise in llvmonly mode */
4442 if (ex)
4443 mono_llvm_throw_exception ((MonoObject*)ex);
4444 }
4445 }
4446
4447 void
4448 mono_aot_init_llvm_method (gpointer aot_module, guint32 method_index)
4449 {
4450 MonoAotModule *amodule = (MonoAotModule *)aot_module;
4451
4452 init_llvmonly_method (amodule, method_index, NULL, NULL, NULL);
4453 }
4454
4455 void
4456 mono_aot_init_gshared_method_this (gpointer aot_module, guint32 method_index, MonoObject *this_obj)
4457 {
4458 MonoAotModule *amodule = (MonoAotModule *)aot_module;
4459 MonoClass *klass;
4460 MonoGenericContext *context;
4461 MonoMethod *method;
4462
4463 // FIXME:
4464 g_assert (this_obj);
4465 klass = this_obj->vtable->klass;
4466
4467 amodule_lock (amodule);
4468 method = (MonoMethod *)g_hash_table_lookup (amodule->extra_methods, GUINT_TO_POINTER (method_index));
4469 amodule_unlock (amodule);
4470
4471 g_assert (method);
4472 context = mono_method_get_context (method);
4473 g_assert (context);
4474
4475 init_llvmonly_method (amodule, method_index, NULL, klass, context);
4476 }
4477
4478 void
4479 mono_aot_init_gshared_method_mrgctx (gpointer aot_module, guint32 method_index, MonoMethodRuntimeGenericContext *rgctx)
4480 {
4481 MonoAotModule *amodule = (MonoAotModule *)aot_module;
4482 MonoGenericContext context = { NULL, NULL };
4483 MonoClass *klass = rgctx->class_vtable->klass;
4484
4485 if (mono_class_is_ginst (klass))
4486 context.class_inst = mono_class_get_generic_class (klass)->context.class_inst;
4487 else if (mono_class_is_gtd (klass))
4488 context.class_inst = mono_class_get_generic_container (klass)->context.class_inst;
4489 context.method_inst = rgctx->method_inst;
4490
4491 init_llvmonly_method (amodule, method_index, NULL, rgctx->class_vtable->klass, &context);
4492 }
4493
4494 void
4495 mono_aot_init_gshared_method_vtable (gpointer aot_module, guint32 method_index, MonoVTable *vtable)
4496 {
4497 MonoAotModule *amodule = (MonoAotModule *)aot_module;
4498 MonoClass *klass;
4499 MonoGenericContext *context;
4500 MonoMethod *method;
4501
4502 klass = vtable->klass;
4503
4504 amodule_lock (amodule);
4505 method = (MonoMethod *)g_hash_table_lookup (amodule->extra_methods, GUINT_TO_POINTER (method_index));
4506 amodule_unlock (amodule);
4507
4508 g_assert (method);
4509 context = mono_method_get_context (method);
4510 g_assert (context);
4511
4512 init_llvmonly_method (amodule, method_index, NULL, klass, context);
4513 }
4514
4515 /*
4516 * mono_aot_get_method:
4517 *
4518 * Return a pointer to the AOTed native code for METHOD if it can be found,
4519 * NULL otherwise.
4520 * On platforms with function pointers, this doesn't return a function pointer.
4521 */
4522 gpointer
4523 mono_aot_get_method (MonoDomain *domain, MonoMethod *method, MonoError *error)
4524 {
4525 MonoClass *klass = method->klass;
4526 MonoMethod *orig_method = method;
4527 guint32 method_index;
4528 MonoAotModule *amodule = (MonoAotModule *)m_class_get_image (klass)->aot_module;
4529 guint8 *code;
4530 gboolean cache_result = FALSE;
4531 ERROR_DECL_VALUE (inner_error);
4532
4533 error_init (error);
4534
4535 if (domain != mono_get_root_domain ())
4536 /* Non shared AOT code can't be used in other appdomains */
4537 return NULL;
4538
4539 if (enable_aot_cache && !amodule && domain->entry_assembly && m_class_get_image (klass) == mono_defaults.corlib) {
4540 /* This cannot be AOTed during startup, so do it now */
4541 if (!mscorlib_aot_loaded) {
4542 mscorlib_aot_loaded = TRUE;
4543 load_aot_module (m_class_get_image (klass)->assembly, NULL);
4544 amodule = (MonoAotModule *)m_class_get_image (klass)->aot_module;
4545 }
4546 }
4547
4548 if (!amodule)
4549 return NULL;
4550
4551 if (amodule->out_of_date)
4552 return NULL;
4553
4554 if ((method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
4555 (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
4556 (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
4557 (method->flags & METHOD_ATTRIBUTE_ABSTRACT))
4558 return NULL;
4559
4560 /*
4561 * Use the original method instead of its invoke-with-check wrapper.
4562 * This is not a problem when using full-aot, since it doesn't support
4563 * remoting.
4564 */
4565 if (mono_aot_only && method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)
4566 return mono_aot_get_method (domain, mono_marshal_method_from_wrapper (method), error);
4567
4568 g_assert (m_class_is_inited (klass));
4569
4570 /* Find method index */
4571 method_index = 0xffffff;
4572
4573 gboolean dedupable = mono_aot_can_dedup (method);
4574
4575 if (method->is_inflated && !method->wrapper_type && mono_method_is_generic_sharable_full (method, TRUE, FALSE, FALSE) && !dedupable) {
4576 MonoMethod *orig_method = method;
4577 /*
4578 * For generic methods, we store the fully shared instance in place of the
4579 * original method.
4580 */
4581 method = mono_method_get_declaring_generic_method (method);
4582 method_index = mono_metadata_token_index (method->token) - 1;
4583
4584 if (mono_llvm_only) {
4585 /* Needed by mono_aot_init_gshared_method_this () */
4586 /* orig_method is a random instance but it is enough to make init_method () work */
4587 amodule_lock (amodule);
4588 g_hash_table_insert (amodule->extra_methods, GUINT_TO_POINTER (method_index), orig_method);
4589 amodule_unlock (amodule);
4590 }
4591 }
4592
4593 if (method_index == 0xffffff && (method->is_inflated || !method->token)) {
4594 /* This hash table is used to avoid the slower search in the extra_method_table in the AOT image */
4595 amodule_lock (amodule);
4596 code = (guint8 *)g_hash_table_lookup (amodule->method_to_code, method);
4597 amodule_unlock (amodule);
4598 if (code)
4599 return code;
4600
4601 cache_result = TRUE;
4602 if (method_index == 0xffffff)
4603 method_index = find_aot_method (method, &amodule);
4604
4605 /*
4606 * Special case the ICollection<T> wrappers for arrays, as they cannot
4607 * be statically enumerated, and each wrapper ends up calling the same
4608 * method in Array.
4609 */
4610 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED && m_class_get_rank (method->klass) && strstr (method->name, "System.Collections.Generic")) {
4611 MonoMethod *m = mono_aot_get_array_helper_from_wrapper (method);
4612
4613 code = (guint8 *)mono_aot_get_method (domain, m, &inner_error);
4614 mono_error_cleanup (&inner_error);
4615 if (code)
4616 return code;
4617 }
4618
4619 /*
4620 * Special case Array.GetGenericValueImpl which is a generic icall.
4621 * Generic sharing currently can't handle it, but the icall returns data using
4622 * an out parameter, so the managed-to-native wrappers can share the same code.
4623 */
4624 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass == mono_defaults.array_class && !strcmp (method->name, "GetGenericValueImpl")) {
4625 MonoMethod *m;
4626 MonoGenericContext ctx;
4627 MonoType *args [16];
4628
4629 if (mono_method_signature (method)->params [1]->type == MONO_TYPE_OBJECT)
4630 /* Avoid recursion */
4631 return NULL;
4632
4633 m = mono_class_get_method_from_name (mono_defaults.array_class, "GetGenericValueImpl", 2);
4634 g_assert (m);
4635
4636 memset (&ctx, 0, sizeof (ctx));
4637 args [0] = m_class_get_byval_arg (mono_defaults.object_class);
4638 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
4639
4640 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method_checked (m, &ctx, error), TRUE, TRUE);
4641 if (!m)
4642 g_error ("AOT runtime could not load method due to %s", mono_error_get_message (error)); /* FIXME don't swallow the error */
4643
4644 /*
4645 * Get the code for the <object> instantiation which should be emitted into
4646 * the mscorlib aot image by the AOT compiler.
4647 */
4648 code = (guint8 *)mono_aot_get_method (domain, m, &inner_error);
4649 mono_error_cleanup (&inner_error);
4650 if (code)
4651 return code;
4652 }
4653
4654 const char *klass_name_space = m_class_get_name_space (method->klass);
4655 const char *klass_name = m_class_get_name (method->klass);
4656 /* Same for CompareExchange<T> and Exchange<T> */
4657 /* Same for Volatile.Read<T>/Write<T> */
4658 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && m_class_get_image (method->klass) == mono_defaults.corlib &&
4659 ((!strcmp (klass_name_space, "System.Threading") && !strcmp (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]))) ||
4660 (!strcmp (klass_name_space, "System.Threading") && !strcmp (klass_name, "Volatile") && (!strcmp (method->name, "Read") && MONO_TYPE_IS_REFERENCE (mini_type_get_underlying_type (mono_method_signature (method)->ret)))) ||
4661 (!strcmp (klass_name_space, "System.Threading") && !strcmp (klass_name, "Volatile") && (!strcmp (method->name, "Write") && MONO_TYPE_IS_REFERENCE (mini_type_get_underlying_type (mono_method_signature (method)->params [1])))))) {
4662 MonoMethod *m;
4663 MonoGenericContext ctx;
4664 MonoType *args [16];
4665 gpointer iter = NULL;
4666
4667 while ((m = mono_class_get_methods (method->klass, &iter))) {
4668 if (mono_method_signature (m)->generic_param_count && !strcmp (m->name, method->name))
4669 break;
4670 }
4671 g_assert (m);
4672
4673 memset (&ctx, 0, sizeof (ctx));
4674 args [0] = mono_get_object_type ();
4675 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
4676
4677 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method_checked (m, &ctx, error), TRUE, TRUE);
4678 if (!m)
4679 g_error ("AOT runtime could not load method due to %s", mono_error_get_message (error)); /* FIXME don't swallow the error */
4680
4681 /* Avoid recursion */
4682 if (method == m)
4683 return NULL;
4684
4685 /*
4686 * Get the code for the <object> instantiation which should be emitted into
4687 * the mscorlib aot image by the AOT compiler.
4688 */
4689 code = (guint8 *)mono_aot_get_method (domain, m, &inner_error);
4690 mono_error_cleanup (&inner_error);
4691 if (code)
4692 return code;
4693 }
4694
4695 /* For ARRAY_ACCESSOR wrappers with reference types, use the <object> instantiation saved in corlib */
4696 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_UNKNOWN) {
4697 WrapperInfo *info = mono_marshal_get_wrapper_info (method);
4698
4699 if (info->subtype == WRAPPER_SUBTYPE_ARRAY_ACCESSOR) {
4700 MonoMethod *array_method = info->d.array_accessor.method;
4701 if (MONO_TYPE_IS_REFERENCE (m_class_get_byval_arg (m_class_get_element_class (array_method->klass)))) {
4702 int rank;
4703
4704 if (!strcmp (array_method->name, "Set"))
4705 rank = mono_method_signature (array_method)->param_count - 1;
4706 else if (!strcmp (array_method->name, "Get") || !strcmp (array_method->name, "Address"))
4707 rank = mono_method_signature (array_method)->param_count;
4708 else
4709 g_assert_not_reached ();
4710 MonoClass *obj_array_class = mono_class_create_array (mono_defaults.object_class, rank);
4711 MonoMethod *m = mono_class_get_method_from_name (obj_array_class, array_method->name, mono_method_signature (array_method)->param_count);
4712 g_assert (m);
4713
4714 m = mono_marshal_get_array_accessor_wrapper (m);
4715 if (m != method) {
4716 code = (guint8 *)mono_aot_get_method (domain, m, &inner_error);
4717 mono_error_cleanup (&inner_error);
4718 if (code)
4719 return code;
4720 }
4721 }
4722 }
4723 }
4724
4725 if (method_index == 0xffffff && method->is_inflated && mono_method_is_generic_sharable_full (method, FALSE, TRUE, FALSE)) {
4726 /* Partial sharing */
4727 MonoMethod *shared;
4728
4729 shared = mini_get_shared_method_full (method, SHARE_MODE_NONE, error);
4730 return_val_if_nok (error, NULL);
4731
4732 method_index = find_aot_method (shared, &amodule);
4733 if (method_index != 0xffffff)
4734 method = shared;
4735 }
4736
4737 if (method_index == 0xffffff && method->is_inflated && mono_method_is_generic_sharable_full (method, FALSE, FALSE, TRUE)) {
4738 MonoMethod *shared;
4739 /* gsharedvt */
4740 /* Use the all-vt shared method since this is what was AOTed */
4741 shared = mini_get_shared_method_full (method, SHARE_MODE_GSHAREDVT, error);
4742 if (!shared)
4743 return NULL;
4744
4745 method_index = find_aot_method (shared, &amodule);
4746 if (method_index != 0xffffff) {
4747 method = mini_get_shared_method_full (method, SHARE_MODE_GSHAREDVT, error);
4748 if (!method)
4749 return NULL;
4750 }
4751 }
4752
4753 if (method_index == 0xffffff) {
4754 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
4755 char *full_name;
4756
4757 full_name = mono_method_full_name (method, TRUE);
4758 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.", full_name);
4759 g_free (full_name);
4760 }
4761 return NULL;
4762 }
4763
4764 if (method_index == 0xffffff)
4765 return NULL;
4766
4767 /* Needed by find_jit_info */
4768 amodule_lock (amodule);
4769 g_hash_table_insert (amodule->extra_methods, GUINT_TO_POINTER (method_index), method);
4770 amodule_unlock (amodule);
4771 } else {
4772 /* Common case */
4773 method_index = mono_metadata_token_index (method->token) - 1;
4774 }
4775
4776 code = (guint8 *)load_method (domain, amodule, m_class_get_image (klass), method, method->token, method_index, error);
4777 if (!is_ok (error))
4778 return NULL;
4779 if (code && cache_result) {
4780 amodule_lock (amodule);
4781 g_hash_table_insert (amodule->method_to_code, orig_method, code);
4782 amodule_unlock (amodule);
4783 }
4784 return code;
4785 }
4786
4787 /**
4788 * Same as mono_aot_get_method, but we try to avoid loading any metadata from the
4789 * method.
4790 */
4791 gpointer
4792 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token, MonoError *error)
4793 {
4794 MonoAotModule *aot_module = (MonoAotModule *)image->aot_module;
4795 int method_index;
4796 gpointer res;
4797
4798 error_init (error);
4799
4800 if (!aot_module)
4801 return NULL;
4802
4803 method_index = mono_metadata_token_index (token) - 1;
4804
4805 res = load_method (domain, aot_module, image, NULL, token, method_index, error);
4806 return res;
4807 }
4808
4809 typedef struct {
4810 guint8 *addr;
4811 gboolean res;
4812 } IsGotEntryUserData;
4813
4814 static void
4815 check_is_got_entry (gpointer key, gpointer value, gpointer user_data)
4816 {
4817 IsGotEntryUserData *data = (IsGotEntryUserData*)user_data;
4818 MonoAotModule *aot_module = (MonoAotModule*)value;
4819
4820 if (aot_module->got && (data->addr >= (guint8*)(aot_module->got)) && (data->addr < (guint8*)(aot_module->got + aot_module->info.got_size)))
4821 data->res = TRUE;
4822 }
4823
4824 gboolean
4825 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
4826 {
4827 IsGotEntryUserData user_data;
4828
4829 if (!aot_modules)
4830 return FALSE;
4831
4832 user_data.addr = addr;
4833 user_data.res = FALSE;
4834 mono_aot_lock ();
4835 g_hash_table_foreach (aot_modules, check_is_got_entry, &user_data);
4836 mono_aot_unlock ();
4837
4838 return user_data.res;
4839 }
4840
4841 typedef struct {
4842 guint8 *addr;
4843 MonoAotModule *module;
4844 } FindAotModuleUserData;
4845
4846 static void
4847 find_aot_module_cb (gpointer key, gpointer value, gpointer user_data)
4848 {
4849 FindAotModuleUserData *data = (FindAotModuleUserData*)user_data;
4850 MonoAotModule *aot_module = (MonoAotModule*)value;
4851
4852 if (amodule_contains_code_addr (aot_module, data->addr))
4853 data->module = aot_module;
4854 }
4855
4856 static inline MonoAotModule*
4857 find_aot_module (guint8 *code)
4858 {
4859 FindAotModuleUserData user_data;
4860
4861 if (!aot_modules)
4862 return NULL;
4863
4864 /* Reading these need no locking */
4865 if (((gsize)code < aot_code_low_addr) || ((gsize)code > aot_code_high_addr))
4866 return NULL;
4867
4868 user_data.addr = code;
4869 user_data.module = NULL;
4870
4871 mono_aot_lock ();
4872 g_hash_table_foreach (aot_modules, find_aot_module_cb, &user_data);
4873 mono_aot_unlock ();
4874
4875 return user_data.module;
4876 }
4877
4878 void
4879 mono_aot_patch_plt_entry (guint8 *code, guint8 *plt_entry, gpointer *got, mgreg_t *regs, guint8 *addr)
4880 {
4881 MonoAotModule *amodule;
4882
4883 /*
4884 * Since AOT code is only used in the root domain,
4885 * mono_domain_get () != mono_get_root_domain () means the calling method
4886 * is AppDomain:InvokeInDomain, so this is the same check as in
4887 * mono_method_same_domain () but without loading the metadata for the method.
4888 */
4889 if (mono_domain_get () == mono_get_root_domain ()) {
4890 if (!got) {
4891 amodule = find_aot_module (code);
4892 if (amodule)
4893 got = amodule->got;
4894 }
4895 mono_arch_patch_plt_entry (plt_entry, got, regs, addr);
4896 }
4897 }
4898
4899 /*
4900 * mono_aot_plt_resolve:
4901 *
4902 * This function is called by the entries in the PLT to resolve the actual method that
4903 * needs to be called. It returns a trampoline to the method and patches the PLT entry.
4904 * Returns NULL if the something cannot be loaded.
4905 */
4906 gpointer
4907 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code, MonoError *error)
4908 {
4909 #ifdef MONO_ARCH_AOT_SUPPORTED
4910 guint8 *p, *target, *plt_entry;
4911 MonoJumpInfo ji;
4912 MonoAotModule *module = (MonoAotModule*)aot_module;
4913 gboolean res, no_ftnptr = FALSE;
4914 MonoMemPool *mp;
4915 gboolean using_gsharedvt = FALSE;
4916
4917 error_init (error);
4918
4919 //printf ("DYN: %p %d\n", aot_module, plt_info_offset);
4920
4921 p = &module->blob [plt_info_offset];
4922
4923 ji.type = (MonoJumpInfoType)decode_value (p, &p);
4924
4925 mp = mono_mempool_new ();
4926 res = decode_patch (module, mp, &ji, p, &p);
4927
4928 if (!res) {
4929 mono_mempool_destroy (mp);
4930 return NULL;
4931 }
4932
4933 #ifdef MONO_ARCH_GSHAREDVT_SUPPORTED
4934 using_gsharedvt = TRUE;
4935 #endif
4936
4937 /*
4938 * Avoid calling resolve_patch_target in the full-aot case if possible, since
4939 * it would create a trampoline, and we don't need that.
4940 * We could do this only if the method does not need the special handling
4941 * in mono_magic_trampoline ().
4942 */
4943 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) &&
4944 !mono_method_needs_static_rgctx_invoke (ji.data.method, FALSE) && !using_gsharedvt) {
4945 target = (guint8 *)mono_jit_compile_method (ji.data.method, error);
4946 if (!mono_error_ok (error)) {
4947 mono_mempool_destroy (mp);
4948 return NULL;
4949 }
4950 no_ftnptr = TRUE;
4951 } else {
4952 target = (guint8 *)mono_resolve_patch_target (NULL, mono_domain_get (), NULL, &ji, TRUE, error);
4953 if (!mono_error_ok (error)) {
4954 mono_mempool_destroy (mp);
4955 return NULL;
4956 }
4957 }
4958
4959 /*
4960 * The trampoline expects us to return a function descriptor on platforms which use
4961 * it, but resolve_patch_target returns a direct function pointer for some type of
4962 * patches, so have to translate between the two.
4963 * FIXME: Clean this up, but how ?
4964 */
4965 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) {
4966 /* These should already have a function descriptor */
4967 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
4968 /* Our function descriptors have a 0 environment, gcc created ones don't */
4969 if (ji.type != MONO_PATCH_INFO_INTERNAL_METHOD && ji.type != MONO_PATCH_INFO_JIT_ICALL_ADDR && ji.type != MONO_PATCH_INFO_ICALL_ADDR)
4970 g_assert (((gpointer*)target) [2] == 0);
4971 #endif
4972 /* Empty */
4973 } else if (!no_ftnptr) {
4974 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
4975 g_assert (((gpointer*)target) [2] != 0);
4976 #endif
4977 target = (guint8 *)mono_create_ftnptr (mono_domain_get (), target);
4978 }
4979
4980 mono_mempool_destroy (mp);
4981
4982 /* Patch the PLT entry with target which might be the actual method not a trampoline */
4983 plt_entry = mono_aot_get_plt_entry (code);
4984 g_assert (plt_entry);
4985 mono_aot_patch_plt_entry (code, plt_entry, module->got, NULL, target);
4986
4987 return target;
4988 #else
4989 g_assert_not_reached ();
4990 return NULL;
4991 #endif
4992 }
4993
4994 /**
4995 * init_plt:
4996 *
4997 * Initialize the PLT table of the AOT module. Called lazily when the first AOT
4998 * method in the module is loaded to avoid committing memory by writing to it.
4999 * LOCKING: Assumes the AMODULE lock is held.
5000 */
5001 static void
5002 init_plt (MonoAotModule *amodule)
5003 {
5004 int i;
5005 gpointer tramp;
5006
5007 if (amodule->plt_inited)
5008 return;
5009
5010 if (amodule->info.plt_size <= 1) {
5011 amodule->plt_inited = TRUE;
5012 return;
5013 }
5014
5015 tramp = mono_create_specific_trampoline (amodule, MONO_TRAMPOLINE_AOT_PLT, mono_get_root_domain (), NULL);
5016
5017 /*
5018 * Initialize the PLT entries in the GOT to point to the default targets.
5019 */
5020
5021 tramp = mono_create_ftnptr (mono_domain_get (), tramp);
5022 for (i = 1; i < amodule->info.plt_size; ++i)
5023 /* All the default entries point to the AOT trampoline */
5024 ((gpointer*)amodule->got)[amodule->info.plt_got_offset_base + i] = tramp;
5025
5026 amodule->plt_inited = TRUE;
5027 }
5028
5029 /*
5030 * mono_aot_get_plt_entry:
5031 *
5032 * Return the address of the PLT entry called by the code at CODE if exists.
5033 */
5034 guint8*
5035 mono_aot_get_plt_entry (guint8 *code)
5036 {
5037 MonoAotModule *amodule = find_aot_module (code);
5038 guint8 *target = NULL;
5039
5040 if (!amodule)
5041 return NULL;
5042
5043 #ifdef TARGET_ARM
5044 if (is_thumb_code (amodule, code - 4))
5045 return mono_arm_get_thumb_plt_entry (code);
5046 #endif
5047
5048 #ifdef MONO_ARCH_AOT_SUPPORTED
5049 target = mono_arch_get_call_target (code);
5050 #else
5051 g_assert_not_reached ();
5052 #endif
5053
5054 #ifdef MONOTOUCH
5055 while (target != NULL) {
5056 if ((target >= (guint8*)(amodule->plt)) && (target < (guint8*)(amodule->plt_end)))
5057 return target;
5058
5059 // Add 4 since mono_arch_get_call_target assumes we're passing
5060 // the instruction after the actual branch instruction.
5061 target = mono_arch_get_call_target (target + 4);
5062 }
5063
5064 return NULL;
5065 #else
5066 if ((target >= (guint8*)(amodule->plt)) && (target < (guint8*)(amodule->plt_end)))
5067 return target;
5068 else
5069 return NULL;
5070 #endif
5071 }
5072
5073 /*
5074 * mono_aot_get_plt_info_offset:
5075 *
5076 * Return the PLT info offset belonging to the plt entry called by CODE.
5077 */
5078 guint32
5079 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
5080 {
5081 guint8 *plt_entry = mono_aot_get_plt_entry (code);
5082
5083 g_assert (plt_entry);
5084
5085 /* The offset is embedded inside the code after the plt entry */
5086 #ifdef MONO_ARCH_AOT_SUPPORTED
5087 return mono_arch_get_plt_info_offset (plt_entry, regs, code);
5088 #else
5089 g_assert_not_reached ();
5090 return 0;
5091 #endif
5092 }
5093
5094 static gpointer
5095 mono_create_ftnptr_malloc (guint8 *code)
5096 {
5097 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
5098 MonoPPCFunctionDescriptor *ftnptr = g_malloc0 (sizeof (MonoPPCFunctionDescriptor));
5099
5100 ftnptr->code = code;
5101 ftnptr->toc = NULL;
5102 ftnptr->env = NULL;
5103
5104 return ftnptr;
5105 #else
5106 return code;
5107 #endif
5108 }
5109
5110 /*
5111 * mono_aot_register_jit_icall:
5112 *
5113 * Register a JIT icall which is called by trampolines in full-aot mode. This should
5114 * be called from mono_arch_init () during startup.
5115 */
5116 void
5117 mono_aot_register_jit_icall (const char *name, gpointer addr)
5118 {
5119 /* No need for locking */
5120 if (!aot_jit_icall_hash)
5121 aot_jit_icall_hash = g_hash_table_new (g_str_hash, g_str_equal);
5122 g_hash_table_insert (aot_jit_icall_hash, (char*)name, addr);
5123 }
5124
5125 /*
5126 * load_function_full:
5127 *
5128 * Load the function named NAME from the aot image.
5129 */
5130 static gpointer
5131 load_function_full (MonoAotModule *amodule, const char *name, MonoTrampInfo **out_tinfo)
5132 {
5133 char *symbol;
5134 guint8 *p;
5135 int n_patches, pindex;
5136 MonoMemPool *mp;
5137 gpointer code;
5138 guint32 info_offset;
5139
5140 /* Load the code */
5141
5142 symbol = g_strdup_printf ("%s", name);
5143 find_amodule_symbol (amodule, symbol, (gpointer *)&code);
5144 g_free (symbol);
5145 if (!code)
5146 g_error ("Symbol '%s' not found in AOT file '%s'.\n", name, amodule->aot_name);
5147
5148 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT: FOUND function '%s' in AOT file '%s'.", name, amodule->aot_name);
5149
5150 /* Load info */
5151
5152 symbol = g_strdup_printf ("%s_p", name);
5153 find_amodule_symbol (amodule, symbol, (gpointer *)&p);
5154 g_free (symbol);
5155 if (!p)
5156 /* Nothing to patch */
5157 return code;
5158
5159 info_offset = *(guint32*)p;
5160 if (out_tinfo) {
5161 MonoTrampInfo *tinfo;
5162 guint32 code_size, uw_info_len, uw_offset;
5163 guint8 *uw_info;
5164 /* Construct a MonoTrampInfo from the data in the AOT image */
5165
5166 p += sizeof (guint32);
5167 code_size = *(guint32*)p;
5168 p += sizeof (guint32);
5169 uw_offset = *(guint32*)p;
5170 uw_info = amodule->unwind_info + uw_offset;
5171 uw_info_len = decode_value (uw_info, &uw_info);
5172
5173 tinfo = g_new0 (MonoTrampInfo, 1);
5174 tinfo->code = (guint8 *)code;
5175 tinfo->code_size = code_size;
5176 tinfo->uw_info_len = uw_info_len;
5177 if (uw_info_len)
5178 tinfo->uw_info = uw_info;
5179
5180 *out_tinfo = tinfo;
5181 }
5182
5183 p = amodule->blob + info_offset;
5184
5185 /* Similar to mono_aot_load_method () */
5186
5187 n_patches = decode_value (p, &p);
5188
5189 if (n_patches) {
5190 MonoJumpInfo *patches;
5191 guint32 *got_slots;
5192
5193 mp = mono_mempool_new ();
5194
5195 patches = load_patch_info (amodule, mp, n_patches, FALSE, &got_slots, p, &p);
5196 g_assert (patches);
5197
5198 for (pindex = 0; pindex < n_patches; ++pindex) {
5199 MonoJumpInfo *ji = &patches [pindex];
5200 ERROR_DECL (error);
5201 gpointer target;
5202
5203 if (amodule->got [got_slots [pindex]])
5204 continue;
5205
5206 /*
5207 * When this code is executed, the runtime may not be initalized yet, so
5208 * resolve the patch info by hand.
5209 */
5210 if (ji->type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
5211 if (!strcmp (ji->data.name, "mono_get_lmf_addr")) {
5212 target = mono_get_lmf_addr;
5213 } else if (!strcmp (ji->data.name, "mono_thread_force_interruption_checkpoint_noraise")) {
5214 target = mono_thread_force_interruption_checkpoint_noraise;
5215 } else if (!strcmp (ji->data.name, "mono_exception_from_token")) {
5216 target = mono_exception_from_token;
5217 } else if (!strcmp (ji->data.name, "mono_throw_exception")) {
5218 target = mono_get_throw_exception ();
5219 } else if (strstr (ji->data.name, "trampoline_func_") == ji->data.name) {
5220 MonoTrampolineType tramp_type2 = (MonoTrampolineType)atoi (ji->data.name + strlen ("trampoline_func_"));
5221 target = (gpointer)mono_get_trampoline_func (tramp_type2);
5222 } else if (strstr (ji->data.name, "specific_trampoline_lazy_fetch_") == ji->data.name) {
5223 /* atoll is needed because the the offset is unsigned */
5224 guint32 slot;
5225 int res;
5226
5227 res = sscanf (ji->data.name, "specific_trampoline_lazy_fetch_%u", &slot);
5228 g_assert (res == 1);
5229 target = mono_create_specific_trampoline (GUINT_TO_POINTER (slot), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, mono_get_root_domain (), NULL);
5230 target = mono_create_ftnptr_malloc ((guint8 *)target);
5231 } else if (!strcmp (ji->data.name, "debugger_agent_single_step_from_context")) {
5232 target = mini_get_dbg_callbacks ()->single_step_from_context;
5233 } else if (!strcmp (ji->data.name, "debugger_agent_breakpoint_from_context")) {
5234 target = mini_get_dbg_callbacks ()->breakpoint_from_context;
5235 } else if (!strcmp (ji->data.name, "throw_exception_addr")) {
5236 target = mono_get_throw_exception_addr ();
5237 } else if (strstr (ji->data.name, "generic_trampoline_")) {
5238 target = mono_aot_get_trampoline (ji->data.name);
5239 } else if (aot_jit_icall_hash && g_hash_table_lookup (aot_jit_icall_hash, ji->data.name)) {
5240 /* Registered by mono_arch_init () */
5241 target = g_hash_table_lookup (aot_jit_icall_hash, ji->data.name);
5242 } else {
5243 fprintf (stderr, "Unknown relocation '%s'\n", ji->data.name);
5244 g_assert_not_reached ();
5245 target = NULL;
5246 }
5247 } else {
5248 /* Hopefully the code doesn't have patches which need method or
5249 * domain to be set.
5250 */
5251 target = mono_resolve_patch_target (NULL, NULL, (guint8 *)code, ji, FALSE, error);
5252 mono_error_assert_ok (error);
5253 g_assert (target);
5254 }
5255
5256 amodule->got [got_slots [pindex]] = target;
5257 }
5258
5259 g_free (got_slots);
5260
5261 mono_mempool_destroy (mp);
5262 }
5263
5264 return code;
5265 }
5266
5267 static gpointer
5268 load_function (MonoAotModule *amodule, const char *name)
5269 {
5270 return load_function_full (amodule, name, NULL);
5271 }
5272
5273 static MonoAotModule*
5274 get_mscorlib_aot_module (void)
5275 {
5276 MonoImage *image;
5277 MonoAotModule *amodule;
5278
5279 image = mono_defaults.corlib;
5280 if (image)
5281 amodule = (MonoAotModule *)image->aot_module;
5282 else
5283 amodule = mscorlib_aot_module;
5284 g_assert (amodule);
5285 return amodule;
5286 }
5287
5288 static void
5289 no_trampolines (void)
5290 {
5291 g_assert_not_reached ();
5292 }
5293
5294 /*
5295 * Return the trampoline identified by NAME from the mscorlib AOT file.
5296 * On ppc64, this returns a function descriptor.
5297 */
5298 gpointer
5299 mono_aot_get_trampoline_full (const char *name, MonoTrampInfo **out_tinfo)
5300 {
5301 MonoAotModule *amodule = get_mscorlib_aot_module ();
5302
5303 if (mono_llvm_only) {
5304 *out_tinfo = NULL;
5305 return no_trampolines;
5306 }
5307
5308 return mono_create_ftnptr_malloc ((guint8 *)load_function_full (amodule, name, out_tinfo));
5309 }
5310
5311 gpointer
5312 mono_aot_get_trampoline (const char *name)
5313 {
5314 MonoTrampInfo *out_tinfo;
5315 gpointer code;
5316
5317 code = mono_aot_get_trampoline_full (name, &out_tinfo);
5318 mono_aot_tramp_info_register (out_tinfo, NULL);
5319
5320 return code;
5321 }
5322
5323 static gpointer
5324 read_unwind_info (MonoAotModule *amodule, MonoTrampInfo *info, const char *symbol_name)
5325 {
5326 gpointer symbol_addr;
5327 guint32 uw_offset, uw_info_len;
5328 guint8 *uw_info;
5329
5330 find_amodule_symbol (amodule, symbol_name, &symbol_addr);
5331
5332 if (!symbol_addr)
5333 return NULL;
5334
5335 uw_offset = *(guint32*)symbol_addr;
5336 uw_info = amodule->unwind_info + uw_offset;
5337 uw_info_len = decode_value (uw_info, &uw_info);
5338
5339 info->uw_info_len = uw_info_len;
5340 if (uw_info_len)
5341 info->uw_info = uw_info;
5342 else
5343 info->uw_info = NULL;
5344
5345 /* If successful return the address of the following data */
5346 return (guint32*)symbol_addr + 1;
5347 }
5348
5349 #ifdef MONOTOUCH
5350 #include <mach/mach.h>
5351
5352 static TrampolinePage* trampoline_pages [MONO_AOT_TRAMP_NUM];
5353
5354 static void
5355 read_page_trampoline_uwinfo (MonoTrampInfo *info, int tramp_type, gboolean is_generic)
5356 {
5357 char symbol_name [128];
5358
5359 if (tramp_type == MONO_AOT_TRAMP_SPECIFIC)
5360 sprintf (symbol_name, "specific_trampolines_page_%s_p", is_generic ? "gen" : "sp");
5361 else if (tramp_type == MONO_AOT_TRAMP_STATIC_RGCTX)
5362 sprintf (symbol_name, "rgctx_trampolines_page_%s_p", is_generic ? "gen" : "sp");
5363 else if (tramp_type == MONO_AOT_TRAMP_IMT)
5364 sprintf (symbol_name, "imt_trampolines_page_%s_p", is_generic ? "gen" : "sp");
5365 else if (tramp_type == MONO_AOT_TRAMP_GSHAREDVT_ARG)
5366 sprintf (symbol_name, "gsharedvt_trampolines_page_%s_p", is_generic ? "gen" : "sp");
5367 else
5368 g_assert_not_reached ();
5369
5370 read_unwind_info (mono_defaults.corlib->aot_module, info, symbol_name);
5371 }
5372
5373 static unsigned char*
5374 get_new_trampoline_from_page (int tramp_type)
5375 {
5376 MonoAotModule *amodule;
5377 MonoImage *image;
5378 TrampolinePage *page;
5379 int count;
5380 void *tpage;
5381 vm_address_t addr, taddr;
5382 kern_return_t ret;
5383 vm_prot_t prot, max_prot;
5384 int psize, specific_trampoline_size;
5385 unsigned char *code;
5386
5387 specific_trampoline_size = 2 * sizeof (gpointer);
5388
5389 mono_aot_page_lock ();
5390 page = trampoline_pages [tramp_type];
5391 if (page && page->trampolines < page->trampolines_end) {
5392 code = page->trampolines;
5393 page->trampolines += specific_trampoline_size;
5394 mono_aot_page_unlock ();
5395 return code;
5396 }
5397 mono_aot_page_unlock ();
5398 /* the trampoline template page is in the mscorlib module */
5399 image = mono_defaults.corlib;
5400 g_assert (image);
5401
5402 psize = MONO_AOT_TRAMP_PAGE_SIZE;
5403
5404 amodule = image->aot_module;
5405 g_assert (amodule);
5406
5407 if (tramp_type == MONO_AOT_TRAMP_SPECIFIC)
5408 tpage = load_function (amodule, "specific_trampolines_page");
5409 else if (tramp_type == MONO_AOT_TRAMP_STATIC_RGCTX)
5410 tpage = load_function (amodule, "rgctx_trampolines_page");
5411 else if (tramp_type == MONO_AOT_TRAMP_IMT)
5412 tpage = load_function (amodule, "imt_trampolines_page");
5413 else if (tramp_type == MONO_AOT_TRAMP_GSHAREDVT_ARG)
5414 tpage = load_function (amodule, "gsharedvt_arg_trampolines_page");
5415 else
5416 g_error ("Incorrect tramp type for trampolines page");
5417 g_assert (tpage);
5418 /*g_warning ("loaded trampolines page at %x", tpage);*/
5419
5420 /* avoid the unlikely case of looping forever */
5421 count = 40;
5422 page = NULL;
5423 while (page == NULL && count-- > 0) {
5424 MonoTrampInfo *gen_info, *sp_info;
5425
5426 addr = 0;
5427 /* allocate two contiguous pages of memory: the first page will contain the data (like a local constant pool)
5428 * while the second will contain the trampolines.
5429 */
5430 do {
5431 ret = vm_allocate (mach_task_self (), &addr, psize * 2, VM_FLAGS_ANYWHERE);
5432 } while (ret == KERN_ABORTED);
5433 if (ret != KERN_SUCCESS) {
5434 g_error ("Cannot allocate memory for trampolines: %d", ret);
5435 break;
5436 }
5437 /*g_warning ("allocated trampoline double page at %x", addr);*/
5438 /* replace the second page with a remapped trampoline page */
5439 taddr = addr + psize;
5440 vm_deallocate (mach_task_self (), taddr, psize);
5441 ret = vm_remap (mach_task_self (), &taddr, psize, 0, FALSE, mach_task_self(), (vm_address_t)tpage, FALSE, &prot, &max_prot, VM_INHERIT_SHARE);
5442 if (ret != KERN_SUCCESS) {
5443 /* someone else got the page, try again */
5444 vm_deallocate (mach_task_self (), addr, psize);
5445 continue;
5446 }
5447 /*g_warning ("remapped trampoline page at %x", taddr);*/
5448
5449 mono_aot_page_lock ();
5450 page = trampoline_pages [tramp_type];
5451 /* some other thread already allocated, so use that to avoid wasting memory */
5452 if (page && page->trampolines < page->trampolines_end) {
5453 code = page->trampolines;
5454 page->trampolines += specific_trampoline_size;
5455 mono_aot_page_unlock ();
5456 vm_deallocate (mach_task_self (), addr, psize);
5457 vm_deallocate (mach_task_self (), taddr, psize);
5458 return code;
5459 }
5460 page = (TrampolinePage*)addr;
5461 page->next = trampoline_pages [tramp_type];
5462 trampoline_pages [tramp_type] = page;
5463 page->trampolines = (void*)(taddr + amodule->info.tramp_page_code_offsets [tramp_type]);
5464 page->trampolines_end = (void*)(taddr + psize - 64);
5465 code = page->trampolines;
5466 page->trampolines += specific_trampoline_size;
5467 mono_aot_page_unlock ();
5468
5469 /* Register the generic part at the beggining of the trampoline page */
5470 gen_info = mono_tramp_info_create (NULL, (guint8*)taddr, amodule->info.tramp_page_code_offsets [tramp_type], NULL, NULL);
5471 read_page_trampoline_uwinfo (gen_info, tramp_type, TRUE);
5472 mono_aot_tramp_info_register (gen_info, NULL);
5473 /*
5474 * FIXME
5475 * Registering each specific trampoline produces a lot of
5476 * MonoJitInfo structures. Jump trampolines are also registered
5477 * separately.
5478 */
5479 if (tramp_type != MONO_AOT_TRAMP_SPECIFIC) {
5480 /* Register the rest of the page as a single trampoline */
5481 sp_info = mono_tramp_info_create (NULL, code, page->trampolines_end - code, NULL, NULL);
5482 read_page_trampoline_uwinfo (sp_info, tramp_type, FALSE);
5483 mono_aot_tramp_info_register (sp_info, NULL);
5484 }
5485 return code;
5486 }
5487 g_error ("Cannot allocate more trampoline pages: %d", ret);
5488 return NULL;
5489 }
5490
5491 #else
5492 static unsigned char*
5493 get_new_trampoline_from_page (int tramp_type)
5494 {
5495 g_error ("Page trampolines not supported.");
5496 return NULL;
5497 }
5498 #endif
5499
5500
5501 static gpointer
5502 get_new_specific_trampoline_from_page (gpointer tramp, gpointer arg)
5503 {
5504 void *code;
5505 gpointer *data;
5506
5507 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_SPECIFIC);
5508
5509 data = (gpointer*)((char*)code - MONO_AOT_TRAMP_PAGE_SIZE);
5510 data [0] = arg;
5511 data [1] = tramp;
5512 /*g_warning ("new trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
5513 return code;
5514
5515 }
5516
5517 static gpointer
5518 get_new_rgctx_trampoline_from_page (gpointer tramp, gpointer arg)
5519 {
5520 void *code;
5521 gpointer *data;
5522
5523 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_STATIC_RGCTX);
5524
5525 data = (gpointer*)((char*)code - MONO_AOT_TRAMP_PAGE_SIZE);
5526 data [0] = arg;
5527 data [1] = tramp;
5528 /*g_warning ("new rgctx trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
5529 return code;
5530
5531 }
5532
5533 static gpointer
5534 get_new_imt_trampoline_from_page (gpointer arg)
5535 {
5536 void *code;
5537 gpointer *data;
5538
5539 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_IMT);
5540
5541 data = (gpointer*)((char*)code - MONO_AOT_TRAMP_PAGE_SIZE);
5542 data [0] = arg;
5543 /*g_warning ("new imt trampoline at %p for data %p, (stored at %p)", code, arg, data);*/
5544 return code;
5545
5546 }
5547
5548 static gpointer
5549 get_new_gsharedvt_arg_trampoline_from_page (gpointer tramp, gpointer arg)
5550 {
5551 void *code;
5552 gpointer *data;
5553
5554 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_GSHAREDVT_ARG);
5555
5556 data = (gpointer*)((char*)code - MONO_AOT_TRAMP_PAGE_SIZE);
5557 data [0] = arg;
5558 data [1] = tramp;
5559 /*g_warning ("new rgctx trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
5560 return code;
5561 }
5562
5563 /* Return a given kind of trampoline */
5564 /* FIXME set unwind info for these trampolines */
5565 static gpointer
5566 get_numerous_trampoline (MonoAotTrampoline tramp_type, int n_got_slots, MonoAotModule **out_amodule, guint32 *got_offset, guint32 *out_tramp_size)
5567 {
5568 MonoImage *image;
5569 MonoAotModule *amodule = get_mscorlib_aot_module ();
5570 int index, tramp_size;
5571
5572 /* Currently, we keep all trampolines in the mscorlib AOT image */
5573 image = mono_defaults.corlib;
5574
5575 *out_amodule = amodule;
5576
5577 mono_aot_lock ();
5578
5579 #ifdef MONOTOUCH
5580 #define MONOTOUCH_TRAMPOLINES_ERROR ". See http://docs.xamarin.com/ios/troubleshooting for instructions on how to fix this condition."
5581 #else
5582 #define MONOTOUCH_TRAMPOLINES_ERROR ""
5583 #endif
5584 if (amodule->trampoline_index [tramp_type] == amodule->info.num_trampolines [tramp_type]) {
5585 g_error ("Ran out of trampolines of type %d in '%s' (limit %d)%s\n",
5586 tramp_type, image ? image->name : "mscorlib", amodule->info.num_trampolines [tramp_type], MONOTOUCH_TRAMPOLINES_ERROR);
5587 }
5588 index = amodule->trampoline_index [tramp_type] ++;
5589
5590 mono_aot_unlock ();
5591
5592 *got_offset = amodule->info.trampoline_got_offset_base [tramp_type] + (index * n_got_slots);
5593
5594 tramp_size = amodule->info.trampoline_size [tramp_type];
5595
5596 if (out_tramp_size)
5597 *out_tramp_size = tramp_size;
5598
5599 return amodule->trampolines [tramp_type] + (index * tramp_size);
5600 }
5601
5602 static void
5603 no_specific_trampoline (void)
5604 {
5605 g_assert_not_reached ();
5606 }
5607
5608 /*
5609 * Return a specific trampoline from the AOT file.
5610 */
5611 gpointer
5612 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
5613 {
5614 MonoAotModule *amodule;
5615 guint32 got_offset, tramp_size;
5616 guint8 *code, *tramp;
5617 static gpointer generic_trampolines [MONO_TRAMPOLINE_NUM];
5618 static gboolean inited;
5619 static guint32 num_trampolines;
5620
5621 if (mono_llvm_only) {
5622 *code_len = 1;
5623 return no_specific_trampoline;
5624 }
5625
5626 if (!inited) {
5627 mono_aot_lock ();
5628
5629 if (!inited) {
5630 mono_counters_register ("Specific trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &num_trampolines);
5631 inited = TRUE;
5632 }
5633
5634 mono_aot_unlock ();
5635 }
5636
5637 num_trampolines ++;
5638
5639 if (!generic_trampolines [tramp_type]) {
5640 char *symbol;
5641
5642 symbol = mono_get_generic_trampoline_name (tramp_type);
5643 generic_trampolines [tramp_type] = mono_aot_get_trampoline (symbol);
5644 g_free (symbol);
5645 }
5646
5647 tramp = (guint8 *)generic_trampolines [tramp_type];
5648 g_assert (tramp);
5649
5650 if (USE_PAGE_TRAMPOLINES) {
5651 code = (guint8 *)get_new_specific_trampoline_from_page (tramp, arg1);
5652 tramp_size = 8;
5653 } else {
5654 code = (guint8 *)get_numerous_trampoline (MONO_AOT_TRAMP_SPECIFIC, 2, &amodule, &got_offset, &tramp_size);
5655
5656 amodule->got [got_offset] = tramp;
5657 amodule->got [got_offset + 1] = arg1;
5658 }
5659
5660 if (code_len)
5661 *code_len = tramp_size;
5662
5663 return code;
5664 }
5665
5666 gpointer
5667 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
5668 {
5669 MonoAotModule *amodule;
5670 guint8 *code;
5671 guint32 got_offset;
5672
5673 if (USE_PAGE_TRAMPOLINES) {
5674 code = (guint8 *)get_new_rgctx_trampoline_from_page (addr, ctx);
5675 } else {
5676 code = (guint8 *)get_numerous_trampoline (MONO_AOT_TRAMP_STATIC_RGCTX, 2, &amodule, &got_offset, NULL);
5677
5678 amodule->got [got_offset] = ctx;
5679 amodule->got [got_offset + 1] = addr;
5680 }
5681
5682 /* The caller expects an ftnptr */
5683 return mono_create_ftnptr (mono_domain_get (), code);
5684 }
5685
5686 gpointer
5687 mono_aot_get_unbox_trampoline (MonoMethod *method)
5688 {
5689 ERROR_DECL (error);
5690 guint32 method_index = mono_metadata_token_index (method->token) - 1;
5691 MonoAotModule *amodule;
5692 gpointer code;
5693 guint32 *ut, *ut_end, *entry;
5694 int low, high, entry_index = 0;
5695 gpointer symbol_addr;
5696 MonoTrampInfo *tinfo;
5697
5698 if (method->is_inflated && !mono_method_is_generic_sharable_full (method, FALSE, FALSE, FALSE)) {
5699 method_index = find_aot_method (method, &amodule);
5700 if (method_index == 0xffffff && mono_method_is_generic_sharable_full (method, FALSE, TRUE, FALSE)) {
5701 MonoMethod *shared = mini_get_shared_method_full (method, SHARE_MODE_NONE, error);
5702 mono_error_assert_ok (error);
5703 method_index = find_aot_method (shared, &amodule);
5704 }
5705 if (method_index == 0xffffff && mono_method_is_generic_sharable_full (method, FALSE, TRUE, TRUE)) {
5706 MonoMethod *shared = mini_get_shared_method_full (method, SHARE_MODE_GSHAREDVT, error);
5707 mono_error_assert_ok (error);
5708
5709 method_index = find_aot_method (shared, &amodule);
5710 }
5711 g_assert (method_index != 0xffffff);
5712 } else {
5713 amodule = (MonoAotModule *)m_class_get_image (method->klass)->aot_module;
5714 g_assert (amodule);
5715 }
5716
5717 if (amodule->info.llvm_get_unbox_tramp) {
5718 gpointer (*get_tramp) (int) = (gpointer (*)(int))amodule->info.llvm_get_unbox_tramp;
5719 code = get_tramp (method_index);
5720
5721 if (code)
5722 return code;
5723 }
5724
5725 ut = amodule->unbox_trampolines;
5726 ut_end = amodule->unbox_trampolines_end;
5727
5728 /* Do a binary search in the sorted table */
5729 code = NULL;
5730 low = 0;
5731 high = (ut_end - ut);
5732 while (low < high) {
5733 entry_index = (low + high) / 2;
5734 entry = &ut [entry_index];
5735 if (entry [0] < method_index) {
5736 low = entry_index + 1;
5737 } else if (entry [0] > method_index) {
5738 high = entry_index;
5739 } else {
5740 break;
5741 }
5742 }
5743
5744 code = get_call_table_entry (amodule->unbox_trampoline_addresses, entry_index);
5745 g_assert (code);
5746
5747 tinfo = mono_tramp_info_create (NULL, (guint8 *)code, 0, NULL, NULL);
5748
5749 symbol_addr = read_unwind_info (amodule, tinfo, "unbox_trampoline_p");
5750 if (!symbol_addr) {
5751 mono_tramp_info_free (tinfo);
5752 return FALSE;
5753 }
5754
5755 tinfo->code_size = *(guint32*)symbol_addr;
5756 mono_aot_tramp_info_register (tinfo, NULL);
5757
5758 /* The caller expects an ftnptr */
5759 return mono_create_ftnptr (mono_domain_get (), code);
5760 }
5761
5762 gpointer
5763 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
5764 {
5765 char *symbol;
5766 gpointer code;
5767 MonoAotModule *amodule = (MonoAotModule *)mono_defaults.corlib->aot_module;
5768 guint32 index = MONO_RGCTX_SLOT_INDEX (slot);
5769 static int count = 0;
5770
5771 count ++;
5772 if (index >= amodule->info.num_rgctx_fetch_trampolines) {
5773 static gpointer addr;
5774 gpointer *info;
5775
5776 /*
5777 * Use the general version of the rgctx fetch trampoline. It receives a pair of <slot, trampoline> in the rgctx arg reg.
5778 */
5779 if (!addr)
5780 addr = load_function (amodule, "rgctx_fetch_trampoline_general");
5781 info = (void **)mono_domain_alloc0 (mono_get_root_domain (), sizeof (gpointer) * 2);
5782 info [0] = GUINT_TO_POINTER (slot);
5783 info [1] = mono_create_specific_trampoline (GUINT_TO_POINTER (slot), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, mono_get_root_domain (), NULL);
5784 code = mono_aot_get_static_rgctx_trampoline (info, addr);
5785 return mono_create_ftnptr (mono_domain_get (), code);
5786 }
5787
5788 symbol = mono_get_rgctx_fetch_trampoline_name (slot);
5789 code = load_function ((MonoAotModule *)mono_defaults.corlib->aot_module, symbol);
5790 g_free (symbol);
5791 /* The caller expects an ftnptr */
5792 return mono_create_ftnptr (mono_domain_get (), code);
5793 }
5794
5795 static void
5796 no_imt_trampoline (void)
5797 {
5798 g_assert_not_reached ();
5799 }
5800
5801 gpointer
5802 mono_aot_get_imt_trampoline (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
5803 {
5804 guint32 got_offset;
5805 gpointer code;
5806 gpointer *buf;
5807 int i, index, real_count;
5808 MonoAotModule *amodule;
5809
5810 if (mono_llvm_only)
5811 return no_imt_trampoline;
5812
5813 real_count = 0;
5814 for (i = 0; i < count; ++i) {
5815 MonoIMTCheckItem *item = imt_entries [i];
5816
5817 if (item->is_equals)
5818 real_count ++;
5819 }
5820
5821 /* Save the entries into an array */
5822 buf = (void **)mono_domain_alloc (domain, (real_count + 1) * 2 * sizeof (gpointer));
5823 index = 0;
5824 for (i = 0; i < count; ++i) {
5825 MonoIMTCheckItem *item = imt_entries [i];
5826
5827 if (!item->is_equals)
5828 continue;
5829
5830 g_assert (item->key);
5831
5832 buf [(index * 2)] = item->key;
5833 if (item->has_target_code) {
5834 gpointer *p = (gpointer *)mono_domain_alloc (domain, sizeof (gpointer));
5835 *p = item->value.target_code;
5836 buf [(index * 2) + 1] = p;
5837 } else {
5838 buf [(index * 2) + 1] = &(vtable->vtable [item->value.vtable_slot]);
5839 }
5840 index ++;
5841 }
5842 buf [(index * 2)] = NULL;
5843 buf [(index * 2) + 1] = fail_tramp;
5844
5845 if (USE_PAGE_TRAMPOLINES) {
5846 code = get_new_imt_trampoline_from_page (buf);
5847 } else {
5848 code = get_numerous_trampoline (MONO_AOT_TRAMP_IMT, 1, &amodule, &got_offset, NULL);
5849
5850 amodule->got [got_offset] = buf;
5851 }
5852
5853 return code;
5854 }
5855
5856 gpointer
5857 mono_aot_get_gsharedvt_arg_trampoline (gpointer arg, gpointer addr)
5858 {
5859 MonoAotModule *amodule;
5860 guint8 *code;
5861 guint32 got_offset;
5862
5863 if (USE_PAGE_TRAMPOLINES) {
5864 code = (guint8 *)get_new_gsharedvt_arg_trampoline_from_page (addr, arg);
5865 } else {
5866 code = (guint8 *)get_numerous_trampoline (MONO_AOT_TRAMP_GSHAREDVT_ARG, 2, &amodule, &got_offset, NULL);
5867
5868 amodule->got [got_offset] = arg;
5869 amodule->got [got_offset + 1] = addr;
5870 }
5871
5872 /* The caller expects an ftnptr */
5873 return mono_create_ftnptr (mono_domain_get (), code);
5874 }
5875
5876 /*
5877 * mono_aot_set_make_unreadable:
5878 *
5879 * Set whenever to make all mmaped memory unreadable. In conjuction with a
5880 * SIGSEGV handler, this is useful to find out which pages the runtime tries to read.
5881 */
5882 void
5883 mono_aot_set_make_unreadable (gboolean unreadable)
5884 {
5885 static int inited;
5886
5887 make_unreadable = unreadable;
5888
5889 if (make_unreadable && !inited) {
5890 mono_counters_register ("AOT: pagefaults", MONO_COUNTER_JIT | MONO_COUNTER_INT, &n_pagefaults);
5891 }
5892 }
5893
5894 typedef struct {
5895 MonoAotModule *module;
5896 guint8 *ptr;
5897 } FindMapUserData;
5898
5899 static void
5900 find_map (gpointer key, gpointer value, gpointer user_data)
5901 {
5902 MonoAotModule *module = (MonoAotModule*)value;
5903 FindMapUserData *data = (FindMapUserData*)user_data;
5904
5905 if (!data->module)
5906 if ((data->ptr >= module->mem_begin) && (data->ptr < module->mem_end))
5907 data->module = module;
5908 }
5909
5910 static MonoAotModule*
5911 find_module_for_addr (void *ptr)
5912 {
5913 FindMapUserData data;
5914
5915 if (!make_unreadable)
5916 return NULL;
5917
5918 data.module = NULL;
5919 data.ptr = (guint8*)ptr;
5920
5921 mono_aot_lock ();
5922 g_hash_table_foreach (aot_modules, (GHFunc)find_map, &data);
5923 mono_aot_unlock ();
5924
5925 return data.module;
5926 }
5927
5928 /*
5929 * mono_aot_is_pagefault:
5930 *
5931 * Should be called from a SIGSEGV signal handler to find out whenever @ptr is
5932 * within memory allocated by this module.
5933 */
5934 gboolean
5935 mono_aot_is_pagefault (void *ptr)
5936 {
5937 if (!make_unreadable)
5938 return FALSE;
5939
5940 /*
5941 * Not signal safe, but SIGSEGV's are synchronous, and
5942 * this is only turned on by a MONO_DEBUG option.
5943 */
5944 return find_module_for_addr (ptr) != NULL;
5945 }
5946
5947 /*
5948 * mono_aot_handle_pagefault:
5949 *
5950 * Handle a pagefault caused by an unreadable page by making it readable again.
5951 */
5952 void
5953 mono_aot_handle_pagefault (void *ptr)
5954 {
5955 #ifndef HOST_WIN32
5956 guint8* start = (guint8*)ROUND_DOWN (((gssize)ptr), mono_pagesize ());
5957 int res;
5958
5959 mono_aot_lock ();
5960 res = mono_mprotect (start, mono_pagesize (), MONO_MMAP_READ|MONO_MMAP_WRITE|MONO_MMAP_EXEC);
5961 g_assert (res == 0);
5962
5963 n_pagefaults ++;
5964 mono_aot_unlock ();
5965 #endif
5966 }
5967
5968 #else
5969 /* AOT disabled */
5970
5971 void
5972 mono_aot_init (void)
5973 {
5974 }
5975
5976 void
5977 mono_aot_cleanup (void)
5978 {
5979 }
5980
5981 guint32
5982 mono_aot_find_method_index (MonoMethod *method)
5983 {
5984 g_assert_not_reached ();
5985 return 0;
5986 }
5987
5988 void
5989 mono_aot_init_llvm_method (gpointer aot_module, guint32 method_index)
5990 {
5991 }
5992
5993 void
5994 mono_aot_init_gshared_method_this (gpointer aot_module, guint32 method_index, MonoObject *this)
5995 {
5996 }
5997
5998 void
5999 mono_aot_init_gshared_method_mrgctx (gpointer aot_module, guint32 method_index, MonoMethodRuntimeGenericContext *rgctx)
6000 {
6001 }
6002
6003 void
6004 mono_aot_init_gshared_method_vtable (gpointer aot_module, guint32 method_index, MonoVTable *vtable)
6005 {
6006 }
6007
6008 gpointer
6009 mono_aot_get_method (MonoDomain *domain,
6010 MonoMethod *method, MonoError *error)
6011 {
6012 error_init (error);
6013 return NULL;
6014 }
6015
6016 gboolean
6017 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
6018 {
6019 return FALSE;
6020 }
6021
6022 gboolean
6023 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
6024 {
6025 return FALSE;
6026 }
6027
6028 gboolean
6029 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
6030 {
6031 return FALSE;
6032 }
6033
6034 MonoJitInfo *
6035 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
6036 {
6037 return NULL;
6038 }
6039
6040 gpointer
6041 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token, MonoError *error)
6042 {
6043 error_init (error);
6044 return NULL;
6045 }
6046
6047 guint8*
6048 mono_aot_get_plt_entry (guint8 *code)
6049 {
6050 return NULL;
6051 }
6052
6053 gpointer
6054 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code, MonoError *error)
6055 {
6056 return NULL;
6057 }
6058
6059 void
6060 mono_aot_patch_plt_entry (guint8 *code, guint8 *plt_entry, gpointer *got, mgreg_t *regs, guint8 *addr)
6061 {
6062 }
6063
6064 gpointer
6065 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot, MonoError *error)
6066 {
6067 error_init (error);
6068
6069 return NULL;
6070 }
6071
6072 guint32
6073 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
6074 {
6075 g_assert_not_reached ();
6076
6077 return 0;
6078 }
6079
6080 gpointer
6081 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
6082 {
6083 g_assert_not_reached ();
6084 return NULL;
6085 }
6086
6087 gpointer
6088 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
6089 {
6090 g_assert_not_reached ();
6091 return NULL;
6092 }
6093
6094 gpointer
6095 mono_aot_get_trampoline_full (const char *name, MonoTrampInfo **out_tinfo)
6096 {
6097 g_assert_not_reached ();
6098 return NULL;
6099 }
6100
6101 gpointer
6102 mono_aot_get_trampoline (const char *name)
6103 {
6104 g_assert_not_reached ();
6105 return NULL;
6106 }
6107
6108 gpointer
6109 mono_aot_get_unbox_trampoline (MonoMethod *method)
6110 {
6111 g_assert_not_reached ();
6112 return NULL;
6113 }
6114
6115 gpointer
6116 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
6117 {
6118 g_assert_not_reached ();
6119 return NULL;
6120 }
6121
6122 gpointer
6123 mono_aot_get_imt_trampoline (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
6124 {
6125 g_assert_not_reached ();
6126 return NULL;
6127 }
6128
6129 gpointer
6130 mono_aot_get_gsharedvt_arg_trampoline (gpointer arg, gpointer addr)
6131 {
6132 g_assert_not_reached ();
6133 return NULL;
6134 }
6135
6136 void
6137 mono_aot_set_make_unreadable (gboolean unreadable)
6138 {
6139 }
6140
6141 gboolean
6142 mono_aot_is_pagefault (void *ptr)
6143 {
6144 return FALSE;
6145 }
6146
6147 void
6148 mono_aot_handle_pagefault (void *ptr)
6149 {
6150 }
6151
6152 guint8*
6153 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
6154 {
6155 g_assert_not_reached ();
6156 return NULL;
6157 }
6158
6159 void
6160 mono_aot_register_jit_icall (const char *name, gpointer addr)
6161 {
6162 }
6163
6164 #endif
Mirror of the official Mono project git repository