?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
[profiler] Remove support for the output=-FILENAME option.
[mono-project.git] / mono / mini / aot-runtime.c
blob7b28d8db4a28bc9c6df49dd5a331c5c54216c924
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/metadata-internals.h>
51 #include <mono/metadata/marshal.h>
52 #include <mono/metadata/gc-internals.h>
53 #include <mono/metadata/threads-types.h>
54 #include <mono/metadata/mono-endian.h>
55 #include <mono/utils/mono-logger-internals.h>
56 #include <mono/utils/mono-mmap.h>
57 #include <mono/utils/mono-compiler.h>
58 #include <mono/utils/mono-counters.h>
59 #include <mono/utils/mono-digest.h>
60 #include <mono/utils/mono-threads-coop.h>
61
62 #include "mini.h"
63 #include "seq-points.h"
64 #include "version.h"
65 #include "debugger-agent.h"
66 #include "aot-compiler.h"
67 #include "jit-icalls.h"
68
69 #ifndef DISABLE_AOT
70
71 #ifdef TARGET_OSX
72 #define ENABLE_AOT_CACHE
73 #endif
74
75 /* Number of got entries shared between the JIT and LLVM GOT */
76 #define N_COMMON_GOT_ENTRIES 10
77
78 #define ALIGN_TO(val,align) ((((guint64)val) + ((align) - 1)) & ~((align) - 1))
79 #define ALIGN_PTR_TO(ptr,align) (gpointer)((((gssize)(ptr)) + (align - 1)) & (~(align - 1)))
80 #define ROUND_DOWN(VALUE,SIZE) ((VALUE) & ~((SIZE) - 1))
81
82 typedef struct {
83 int method_index;
84 MonoJitInfo *jinfo;
85 } JitInfoMap;
86
87 typedef struct MonoAotModule {
88 char *aot_name;
89 /* Pointer to the Global Offset Table */
90 gpointer *got;
91 gpointer *llvm_got;
92 gpointer *shared_got;
93 GHashTable *name_cache;
94 GHashTable *extra_methods;
95 /* Maps methods to their code */
96 GHashTable *method_to_code;
97 /* Maps pointers into the method info to the methods themselves */
98 GHashTable *method_ref_to_method;
99 MonoAssemblyName *image_names;
100 char **image_guids;
101 MonoAssembly *assembly;
102 MonoImage **image_table;
103 guint32 image_table_len;
104 gboolean out_of_date;
105 gboolean plt_inited;
106 gboolean got_initializing;
107 guint8 *mem_begin;
108 guint8 *mem_end;
109 guint8 *jit_code_start;
110 guint8 *jit_code_end;
111 guint8 *llvm_code_start;
112 guint8 *llvm_code_end;
113 guint8 *plt;
114 guint8 *plt_end;
115 guint8 *blob;
116 /* Maps method indexes to their code */
117 gpointer *methods;
118 /* Sorted array of method addresses */
119 gpointer *sorted_methods;
120 /* Method indexes for each method in sorted_methods */
121 int *sorted_method_indexes;
122 /* The length of the two tables above */
123 int sorted_methods_len;
124 guint32 *method_info_offsets;
125 guint32 *ex_info_offsets;
126 guint32 *class_info_offsets;
127 guint32 *got_info_offsets;
128 guint32 *llvm_got_info_offsets;
129 guint32 *methods_loaded;
130 guint16 *class_name_table;
131 guint32 *extra_method_table;
132 guint32 *extra_method_info_offsets;
133 guint32 *unbox_trampolines;
134 guint32 *unbox_trampolines_end;
135 guint32 *unbox_trampoline_addresses;
136 guint8 *unwind_info;
137
138 /* Points to the mono EH data created by LLVM */
139 guint8 *mono_eh_frame;
140
141 /* Points to the data tables if MONO_AOT_FILE_FLAG_SEPARATE_DATA is set */
142 gpointer tables [MONO_AOT_TABLE_NUM];
143 /* Points to the trampolines */
144 guint8 *trampolines [MONO_AOT_TRAMP_NUM];
145 /* The first unused trampoline of each kind */
146 guint32 trampoline_index [MONO_AOT_TRAMP_NUM];
147
148 gboolean use_page_trampolines;
149
150 MonoAotFileInfo info;
151
152 gpointer *globals;
153 MonoDl *sofile;
154
155 JitInfoMap *async_jit_info_table;
156 mono_mutex_t mutex;
157 } MonoAotModule;
158
159 typedef struct {
160 void *next;
161 unsigned char *trampolines;
162 unsigned char *trampolines_end;
163 } TrampolinePage;
164
165 static GHashTable *aot_modules;
166 #define mono_aot_lock() mono_os_mutex_lock (&aot_mutex)
167 #define mono_aot_unlock() mono_os_mutex_unlock (&aot_mutex)
168 static mono_mutex_t aot_mutex;
169
170 /*
171 * Maps assembly names to the mono_aot_module_<NAME>_info symbols in the
172 * AOT modules registered by mono_aot_register_module ().
173 */
174 static GHashTable *static_aot_modules;
175
176 /*
177 * Maps MonoJitInfo* to the aot module they belong to, this can be different
178 * from ji->method->klass->image's aot module for generic instances.
179 */
180 static GHashTable *ji_to_amodule;
181
182 /*
183 * Whenever to AOT compile loaded assemblies on demand and store them in
184 * a cache.
185 */
186 static gboolean enable_aot_cache = FALSE;
187
188 static gboolean mscorlib_aot_loaded;
189
190 /* For debugging */
191 static gint32 mono_last_aot_method = -1;
192
193 static gboolean make_unreadable = FALSE;
194 static guint32 name_table_accesses = 0;
195 static guint32 n_pagefaults = 0;
196
197 /* Used to speed-up find_aot_module () */
198 static gsize aot_code_low_addr = (gssize)-1;
199 static gsize aot_code_high_addr = 0;
200
201 /* Stats */
202 static gint32 async_jit_info_size;
203
204 static GHashTable *aot_jit_icall_hash;
205
206 #ifdef MONOTOUCH
207 #define USE_PAGE_TRAMPOLINES ((MonoAotModule*)mono_defaults.corlib->aot_module)->use_page_trampolines
208 #else
209 #define USE_PAGE_TRAMPOLINES 0
210 #endif
211
212 #define mono_aot_page_lock() mono_os_mutex_lock (&aot_page_mutex)
213 #define mono_aot_page_unlock() mono_os_mutex_unlock (&aot_page_mutex)
214 static mono_mutex_t aot_page_mutex;
215
216 static MonoAotModule *mscorlib_aot_module;
217
218 /* Embedding API hooks to load the AOT data for AOT images compiled with MONO_AOT_FILE_FLAG_SEPARATE_DATA */
219 static MonoLoadAotDataFunc aot_data_load_func;
220 static MonoFreeAotDataFunc aot_data_free_func;
221 static gpointer aot_data_func_user_data;
222
223 static void
224 init_plt (MonoAotModule *info);
225
226 static void
227 compute_llvm_code_range (MonoAotModule *amodule, guint8 **code_start, guint8 **code_end);
228
229 static gboolean
230 init_method (MonoAotModule *amodule, guint32 method_index, MonoMethod *method, MonoClass *init_class, MonoGenericContext *context, MonoError *error);
231
232 static MonoJumpInfo*
233 decode_patches (MonoAotModule *amodule, MonoMemPool *mp, int n_patches, gboolean llvm, guint32 *got_offsets);
234
235 static inline void
236 amodule_lock (MonoAotModule *amodule)
237 {
238 mono_os_mutex_lock (&amodule->mutex);
239 }
240
241 static inline void
242 amodule_unlock (MonoAotModule *amodule)
243 {
244 mono_os_mutex_unlock (&amodule->mutex);
245 }
246
247 /*
248 * load_image:
249 *
250 * Load one of the images referenced by AMODULE. Returns NULL if the image is not
251 * found, and sets @error for what happened
252 */
253 static MonoImage *
254 load_image (MonoAotModule *amodule, int index, MonoError *error)
255 {
256 MonoAssembly *assembly;
257 MonoImageOpenStatus status;
258
259 g_assert (index < amodule->image_table_len);
260
261 error_init (error);
262
263 if (amodule->image_table [index])
264 return amodule->image_table [index];
265 if (amodule->out_of_date) {
266 mono_error_set_bad_image_name (error, amodule->aot_name, "Image out of date");
267 return NULL;
268 }
269
270 assembly = mono_assembly_load (&amodule->image_names [index], amodule->assembly->basedir, &status);
271 if (!assembly) {
272 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);
273 mono_error_set_bad_image_name (error, amodule->aot_name, "module is unusable because dependency %s is not found (error %d).\n", amodule->image_names [index].name, status);
274 amodule->out_of_date = TRUE;
275 return NULL;
276 }
277
278 if (strcmp (assembly->image->guid, amodule->image_guids [index])) {
279 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);
280 mono_error_set_bad_image_name (error, amodule->aot_name, "module is unusable (GUID of dependent assembly %s doesn't match (expected '%s', got '%s').", amodule->image_names [index].name, amodule->image_guids [index], assembly->image->guid);
281 amodule->out_of_date = TRUE;
282 return NULL;
283 }
284
285 amodule->image_table [index] = assembly->image;
286 return assembly->image;
287 }
288
289 static inline gint32
290 decode_value (guint8 *ptr, guint8 **rptr)
291 {
292 guint8 b = *ptr;
293 gint32 len;
294
295 if ((b & 0x80) == 0){
296 len = b;
297 ++ptr;
298 } else if ((b & 0x40) == 0){
299 len = ((b & 0x3f) << 8 | ptr [1]);
300 ptr += 2;
301 } else if (b != 0xff) {
302 len = ((b & 0x1f) << 24) |
303 (ptr [1] << 16) |
304 (ptr [2] << 8) |
305 ptr [3];
306 ptr += 4;
307 }
308 else {
309 len = (ptr [1] << 24) | (ptr [2] << 16) | (ptr [3] << 8) | ptr [4];
310 ptr += 5;
311 }
312 if (rptr)
313 *rptr = ptr;
314
315 //printf ("DECODE: %d.\n", len);
316 return len;
317 }
318
319 /*
320 * mono_aot_get_offset:
321 *
322 * Decode an offset table emitted by emit_offset_table (), returning the INDEXth
323 * entry.
324 */
325 static guint32
326 mono_aot_get_offset (guint32 *table, int index)
327 {
328 int i, group, ngroups, index_entry_size;
329 int start_offset, offset, group_size;
330 guint8 *data_start, *p;
331 guint32 *index32 = NULL;
332 guint16 *index16 = NULL;
333
334 /* noffsets = table [0]; */
335 group_size = table [1];
336 ngroups = table [2];
337 index_entry_size = table [3];
338 group = index / group_size;
339
340 if (index_entry_size == 2) {
341 index16 = (guint16*)&table [4];
342 data_start = (guint8*)&index16 [ngroups];
343 p = data_start + index16 [group];
344 } else {
345 index32 = (guint32*)&table [4];
346 data_start = (guint8*)&index32 [ngroups];
347 p = data_start + index32 [group];
348 }
349
350 /* offset will contain the value of offsets [group * group_size] */
351 offset = start_offset = decode_value (p, &p);
352 for (i = group * group_size + 1; i <= index; ++i) {
353 offset += decode_value (p, &p);
354 }
355
356 //printf ("Offset lookup: %d -> %d, start=%d, p=%d\n", index, offset, start_offset, table [3 + group]);
357
358 return offset;
359 }
360
361 static MonoMethod*
362 decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf, MonoError *error);
363
364 static MonoClass*
365 decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf, MonoError *error);
366
367 static MonoType*
368 decode_type (MonoAotModule *module, guint8 *buf, guint8 **endbuf, MonoError *error);
369
370 static MonoGenericInst*
371 decode_generic_inst (MonoAotModule *module, guint8 *buf, guint8 **endbuf, MonoError *error)
372 {
373 int type_argc, i;
374 MonoType **type_argv;
375 MonoGenericInst *inst;
376 guint8 *p = buf;
377
378 error_init (error);
379 type_argc = decode_value (p, &p);
380 type_argv = g_new0 (MonoType*, type_argc);
381
382 for (i = 0; i < type_argc; ++i) {
383 MonoClass *pclass = decode_klass_ref (module, p, &p, error);
384 if (!pclass) {
385 g_free (type_argv);
386 return NULL;
387 }
388 type_argv [i] = &pclass->byval_arg;
389 }
390
391 inst = mono_metadata_get_generic_inst (type_argc, type_argv);
392 g_free (type_argv);
393
394 *endbuf = p;
395
396 return inst;
397 }
398
399 static gboolean
400 decode_generic_context (MonoAotModule *module, MonoGenericContext *ctx, guint8 *buf, guint8 **endbuf, MonoError *error)
401 {
402 guint8 *p = buf;
403 guint8 *p2;
404 int argc;
405 error_init (error);
406
407 p2 = p;
408 argc = decode_value (p, &p);
409 if (argc) {
410 p = p2;
411 ctx->class_inst = decode_generic_inst (module, p, &p, error);
412 if (!ctx->class_inst)
413 return FALSE;
414 }
415 p2 = p;
416 argc = decode_value (p, &p);
417 if (argc) {
418 p = p2;
419 ctx->method_inst = decode_generic_inst (module, p, &p, error);
420 if (!ctx->method_inst)
421 return FALSE;
422 }
423
424 *endbuf = p;
425 return TRUE;
426 }
427
428 static MonoClass*
429 decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf, MonoError *error)
430 {
431 MonoImage *image;
432 MonoClass *klass = NULL, *eklass;
433 guint32 token, rank, idx;
434 guint8 *p = buf;
435 int reftype;
436
437 error_init (error);
438 reftype = decode_value (p, &p);
439 if (reftype == 0) {
440 *endbuf = p;
441 mono_error_set_bad_image_name (error, module->aot_name, "Decoding a null class ref");
442 return NULL;
443 }
444
445 switch (reftype) {
446 case MONO_AOT_TYPEREF_TYPEDEF_INDEX:
447 idx = decode_value (p, &p);
448 image = load_image (module, 0, error);
449 if (!image)
450 return NULL;
451 klass = mono_class_get_checked (image, MONO_TOKEN_TYPE_DEF + idx, error);
452 break;
453 case MONO_AOT_TYPEREF_TYPEDEF_INDEX_IMAGE:
454 idx = decode_value (p, &p);
455 image = load_image (module, decode_value (p, &p), error);
456 if (!image)
457 return NULL;
458 klass = mono_class_get_checked (image, MONO_TOKEN_TYPE_DEF + idx, error);
459 break;
460 case MONO_AOT_TYPEREF_TYPESPEC_TOKEN:
461 token = decode_value (p, &p);
462 image = module->assembly->image;
463 if (!image) {
464 mono_error_set_bad_image_name (error, module->aot_name, "No image associated with the aot module");
465 return NULL;
466 }
467 klass = mono_class_get_checked (image, token, error);
468 break;
469 case MONO_AOT_TYPEREF_GINST: {
470 MonoClass *gclass;
471 MonoGenericContext ctx;
472 MonoType *type;
473
474 gclass = decode_klass_ref (module, p, &p, error);
475 if (!gclass)
476 return NULL;
477 g_assert (mono_class_is_gtd (gclass));
478
479 memset (&ctx, 0, sizeof (ctx));
480 ctx.class_inst = decode_generic_inst (module, p, &p, error);
481 if (!ctx.class_inst)
482 return NULL;
483 type = mono_class_inflate_generic_type_checked (&gclass->byval_arg, &ctx, error);
484 if (!type)
485 return NULL;
486 klass = mono_class_from_mono_type (type);
487 mono_metadata_free_type (type);
488 break;
489 }
490 case MONO_AOT_TYPEREF_VAR: {
491 MonoType *t = NULL;
492 MonoGenericContainer *container = NULL;
493 gboolean has_constraint = decode_value (p, &p);
494
495 if (has_constraint) {
496 MonoClass *par_klass;
497 MonoType *gshared_constraint;
498
499 gshared_constraint = decode_type (module, p, &p, error);
500 if (!gshared_constraint)
501 return NULL;
502
503 par_klass = decode_klass_ref (module, p, &p, error);
504 if (!par_klass)
505 return NULL;
506
507 t = mini_get_shared_gparam (&par_klass->byval_arg, gshared_constraint);
508 mono_metadata_free_type (gshared_constraint);
509 klass = mono_class_from_mono_type (t);
510 } else {
511 int type = decode_value (p, &p);
512 int num = decode_value (p, &p);
513 gboolean is_not_anonymous = decode_value (p, &p);
514
515 if (is_not_anonymous) {
516 gboolean is_method = decode_value (p, &p);
517
518 if (is_method) {
519 MonoMethod *method_def;
520 g_assert (type == MONO_TYPE_MVAR);
521 method_def = decode_resolve_method_ref (module, p, &p, error);
522 if (!method_def)
523 return NULL;
524
525 container = mono_method_get_generic_container (method_def);
526 } else {
527 MonoClass *class_def;
528 g_assert (type == MONO_TYPE_VAR);
529 class_def = decode_klass_ref (module, p, &p, error);
530 if (!class_def)
531 return NULL;
532
533 container = mono_class_try_get_generic_container (class_def); //FIXME is this a case for a try_get?
534 }
535 } else {
536 // We didn't decode is_method, so we have to infer it from type enum.
537 container = get_anonymous_container_for_image (module->assembly->image, type == MONO_TYPE_MVAR);
538 }
539
540 t = g_new0 (MonoType, 1);
541 t->type = (MonoTypeEnum)type;
542 if (is_not_anonymous) {
543 t->data.generic_param = mono_generic_container_get_param (container, num);
544 } else {
545 /* Anonymous */
546 MonoGenericParam *par = (MonoGenericParam*)mono_image_alloc0 (module->assembly->image, sizeof (MonoGenericParamFull));
547 par->owner = container;
548 par->num = num;
549 t->data.generic_param = par;
550 ((MonoGenericParamFull*)par)->info.name = make_generic_name_string (module->assembly->image, num);
551 }
552 // FIXME: Maybe use types directly to avoid
553 // the overhead of creating MonoClass-es
554 klass = mono_class_from_mono_type (t);
555
556 g_free (t);
557 }
558 break;
559 }
560 case MONO_AOT_TYPEREF_ARRAY:
561 /* Array */
562 rank = decode_value (p, &p);
563 eklass = decode_klass_ref (module, p, &p, error);
564 if (!eklass)
565 return NULL;
566 klass = mono_array_class_get (eklass, rank);
567 break;
568 case MONO_AOT_TYPEREF_PTR: {
569 MonoType *t;
570
571 t = decode_type (module, p, &p, error);
572 if (!t)
573 return NULL;
574 klass = mono_class_from_mono_type (t);
575 g_free (t);
576 break;
577 }
578 case MONO_AOT_TYPEREF_BLOB_INDEX: {
579 guint32 offset = decode_value (p, &p);
580 guint8 *p2;
581
582 p2 = module->blob + offset;
583 klass = decode_klass_ref (module, p2, &p2, error);
584 break;
585 }
586 default:
587 mono_error_set_bad_image_name (error, module->aot_name, "Invalid klass reftype %d", reftype);
588 }
589 //g_assert (klass);
590 //printf ("BLA: %s\n", mono_type_full_name (&klass->byval_arg));
591 *endbuf = p;
592 return klass;
593 }
594
595 static MonoClassField*
596 decode_field_info (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
597 {
598 MonoError error;
599 MonoClass *klass = decode_klass_ref (module, buf, &buf, &error);
600 guint32 token;
601 guint8 *p = buf;
602
603 if (!klass) {
604 mono_error_cleanup (&error); /* FIXME don't swallow the error */
605 return NULL;
606 }
607
608 token = MONO_TOKEN_FIELD_DEF + decode_value (p, &p);
609
610 *endbuf = p;
611
612 return mono_class_get_field (klass, token);
613 }
614
615 /*
616 * Parse a MonoType encoded by encode_type () in aot-compiler.c. Return malloc-ed
617 * memory.
618 */
619 static MonoType*
620 decode_type (MonoAotModule *module, guint8 *buf, guint8 **endbuf, MonoError *error)
621 {
622 guint8 *p = buf;
623 MonoType *t;
624
625 t = (MonoType *)g_malloc0 (sizeof (MonoType));
626 error_init (error);
627
628 while (TRUE) {
629 if (*p == MONO_TYPE_PINNED) {
630 t->pinned = TRUE;
631 ++p;
632 } else if (*p == MONO_TYPE_BYREF) {
633 t->byref = TRUE;
634 ++p;
635 } else {
636 break;
637 }
638 }
639
640 t->type = (MonoTypeEnum)*p;
641 ++p;
642
643 switch (t->type) {
644 case MONO_TYPE_VOID:
645 case MONO_TYPE_BOOLEAN:
646 case MONO_TYPE_CHAR:
647 case MONO_TYPE_I1:
648 case MONO_TYPE_U1:
649 case MONO_TYPE_I2:
650 case MONO_TYPE_U2:
651 case MONO_TYPE_I4:
652 case MONO_TYPE_U4:
653 case MONO_TYPE_I8:
654 case MONO_TYPE_U8:
655 case MONO_TYPE_R4:
656 case MONO_TYPE_R8:
657 case MONO_TYPE_I:
658 case MONO_TYPE_U:
659 case MONO_TYPE_STRING:
660 case MONO_TYPE_OBJECT:
661 case MONO_TYPE_TYPEDBYREF:
662 break;
663 case MONO_TYPE_VALUETYPE:
664 case MONO_TYPE_CLASS:
665 t->data.klass = decode_klass_ref (module, p, &p, error);
666 if (!t->data.klass)
667 goto fail;
668 break;
669 case MONO_TYPE_SZARRAY:
670 t->data.klass = decode_klass_ref (module, p, &p, error);
671
672 if (!t->data.klass)
673 goto fail;
674 break;
675 case MONO_TYPE_PTR:
676 t->data.type = decode_type (module, p, &p, error);
677 if (!t->data.type)
678 goto fail;
679 break;
680 case MONO_TYPE_GENERICINST: {
681 MonoClass *gclass;
682 MonoGenericContext ctx;
683 MonoType *type;
684 MonoClass *klass;
685
686 gclass = decode_klass_ref (module, p, &p, error);
687 if (!gclass)
688 goto fail;
689 g_assert (mono_class_is_gtd (gclass));
690
691 memset (&ctx, 0, sizeof (ctx));
692 ctx.class_inst = decode_generic_inst (module, p, &p, error);
693 if (!ctx.class_inst)
694 goto fail;
695 type = mono_class_inflate_generic_type_checked (&gclass->byval_arg, &ctx, error);
696 if (!type)
697 goto fail;
698 klass = mono_class_from_mono_type (type);
699 t->data.generic_class = mono_class_get_generic_class (klass);
700 break;
701 }
702 case MONO_TYPE_ARRAY: {
703 MonoArrayType *array;
704 int i;
705
706 // FIXME: memory management
707 array = g_new0 (MonoArrayType, 1);
708 array->eklass = decode_klass_ref (module, p, &p, error);
709 if (!array->eklass)
710 goto fail;
711 array->rank = decode_value (p, &p);
712 array->numsizes = decode_value (p, &p);
713
714 if (array->numsizes)
715 array->sizes = (int *)g_malloc0 (sizeof (int) * array->numsizes);
716 for (i = 0; i < array->numsizes; ++i)
717 array->sizes [i] = decode_value (p, &p);
718
719 array->numlobounds = decode_value (p, &p);
720 if (array->numlobounds)
721 array->lobounds = (int *)g_malloc0 (sizeof (int) * array->numlobounds);
722 for (i = 0; i < array->numlobounds; ++i)
723 array->lobounds [i] = decode_value (p, &p);
724 t->data.array = array;
725 break;
726 }
727 case MONO_TYPE_VAR:
728 case MONO_TYPE_MVAR: {
729 MonoClass *klass = decode_klass_ref (module, p, &p, error);
730 if (!klass)
731 goto fail;
732 t->data.generic_param = klass->byval_arg.data.generic_param;
733 break;
734 }
735 default:
736 mono_error_set_bad_image_name (error, module->aot_name, "Invalid encoded type %d", t->type);
737 goto fail;
738 }
739
740 *endbuf = p;
741
742 return t;
743 fail:
744 g_free (t);
745 return NULL;
746 }
747
748 // FIXME: Error handling, memory management
749
750 static MonoMethodSignature*
751 decode_signature_with_target (MonoAotModule *module, MonoMethodSignature *target, guint8 *buf, guint8 **endbuf)
752 {
753 MonoError error;
754 MonoMethodSignature *sig;
755 guint32 flags;
756 int i, gen_param_count = 0, param_count, call_conv;
757 guint8 *p = buf;
758 gboolean hasthis, explicit_this, has_gen_params;
759
760 flags = *p;
761 p ++;
762 has_gen_params = (flags & 0x10) != 0;
763 hasthis = (flags & 0x20) != 0;
764 explicit_this = (flags & 0x40) != 0;
765 call_conv = flags & 0x0F;
766
767 if (has_gen_params)
768 gen_param_count = decode_value (p, &p);
769 param_count = decode_value (p, &p);
770 if (target && param_count != target->param_count)
771 return NULL;
772 sig = (MonoMethodSignature *)g_malloc0 (MONO_SIZEOF_METHOD_SIGNATURE + param_count * sizeof (MonoType *));
773 sig->param_count = param_count;
774 sig->sentinelpos = -1;
775 sig->hasthis = hasthis;
776 sig->explicit_this = explicit_this;
777 sig->call_convention = call_conv;
778 sig->generic_param_count = gen_param_count;
779 sig->ret = decode_type (module, p, &p, &error);
780 if (!sig->ret)
781 goto fail;
782 for (i = 0; i < param_count; ++i) {
783 if (*p == MONO_TYPE_SENTINEL) {
784 g_assert (sig->call_convention == MONO_CALL_VARARG);
785 sig->sentinelpos = i;
786 p ++;
787 }
788 sig->params [i] = decode_type (module, p, &p, &error);
789 if (!sig->params [i])
790 goto fail;
791 }
792
793 if (sig->call_convention == MONO_CALL_VARARG && sig->sentinelpos == -1)
794 sig->sentinelpos = sig->param_count;
795
796 *endbuf = p;
797
798 return sig;
799 fail:
800 mono_error_cleanup (&error); /* FIXME don't swallow the error */
801 g_free (sig);
802 return NULL;
803 }
804
805 static MonoMethodSignature*
806 decode_signature (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
807 {
808 return decode_signature_with_target (module, NULL, buf, endbuf);
809 }
810
811 static gboolean
812 sig_matches_target (MonoAotModule *module, MonoMethod *target, guint8 *buf, guint8 **endbuf)
813 {
814 MonoMethodSignature *sig;
815 gboolean res;
816 guint8 *p = buf;
817
818 sig = decode_signature_with_target (module, mono_method_signature (target), p, &p);
819 res = sig && mono_metadata_signature_equal (mono_method_signature (target), sig);
820 g_free (sig);
821 *endbuf = p;
822 return res;
823 }
824
825 /* Stores information returned by decode_method_ref () */
826 typedef struct {
827 MonoImage *image;
828 guint32 token;
829 MonoMethod *method;
830 gboolean no_aot_trampoline;
831 } MethodRef;
832
833 /*
834 * decode_method_ref_with_target:
835 *
836 * Decode a method reference, storing the image/token into a MethodRef structure.
837 * This avoids loading metadata for the method if the caller does not need it. If the method has
838 * no token, then it is loaded from metadata and ref->method is set to the method instance.
839 * If TARGET is non-NULL, abort decoding if it can be determined that the decoded method
840 * couldn't resolve to TARGET, and return FALSE.
841 * There are some kinds of method references which only support a non-null TARGET.
842 * This means that its not possible to decode this into a method, only to check
843 * that the method reference matches a given method. This is normally not a problem
844 * as these wrappers only occur in the extra_methods table, where we already have
845 * a method we want to lookup.
846 *
847 * If there was a decoding error, we return FALSE and set @error
848 */
849 static gboolean
850 decode_method_ref_with_target (MonoAotModule *module, MethodRef *ref, MonoMethod *target, guint8 *buf, guint8 **endbuf, MonoError *error)
851 {
852 guint32 image_index, value;
853 MonoImage *image = NULL;
854 guint8 *p = buf;
855
856 memset (ref, 0, sizeof (MethodRef));
857 error_init (error);
858
859 value = decode_value (p, &p);
860 image_index = value >> 24;
861
862 if (image_index == MONO_AOT_METHODREF_NO_AOT_TRAMPOLINE) {
863 ref->no_aot_trampoline = TRUE;
864 value = decode_value (p, &p);
865 image_index = value >> 24;
866 }
867
868 if (image_index < MONO_AOT_METHODREF_MIN || image_index == MONO_AOT_METHODREF_METHODSPEC || image_index == MONO_AOT_METHODREF_GINST) {
869 if (target && target->wrapper_type) {
870 return FALSE;
871 }
872 }
873
874 if (image_index == MONO_AOT_METHODREF_WRAPPER) {
875 WrapperInfo *info;
876 guint32 wrapper_type;
877
878 wrapper_type = decode_value (p, &p);
879
880 if (target && target->wrapper_type != wrapper_type)
881 return FALSE;
882
883 /* Doesn't matter */
884 image = mono_defaults.corlib;
885
886 switch (wrapper_type) {
887 #ifndef DISABLE_REMOTING
888 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK: {
889 MonoMethod *m = decode_resolve_method_ref (module, p, &p, error);
890 if (!m)
891 return FALSE;
892 mono_class_init (m->klass);
893 if (mono_aot_only)
894 ref->method = m;
895 else
896 ref->method = mono_marshal_get_remoting_invoke_with_check (m);
897 break;
898 }
899 case MONO_WRAPPER_PROXY_ISINST: {
900 MonoClass *klass = decode_klass_ref (module, p, &p, error);
901 if (!klass)
902 return FALSE;
903 ref->method = mono_marshal_get_proxy_cancast (klass);
904 break;
905 }
906 case MONO_WRAPPER_LDFLD:
907 case MONO_WRAPPER_LDFLDA:
908 case MONO_WRAPPER_STFLD: {
909 MonoClass *klass = decode_klass_ref (module, p, &p, error);
910 if (!klass)
911 return FALSE;
912 if (wrapper_type == MONO_WRAPPER_LDFLD)
913 ref->method = mono_marshal_get_ldfld_wrapper (&klass->byval_arg);
914 else if (wrapper_type == MONO_WRAPPER_LDFLDA)
915 ref->method = mono_marshal_get_ldflda_wrapper (&klass->byval_arg);
916 else if (wrapper_type == MONO_WRAPPER_STFLD)
917 ref->method = mono_marshal_get_stfld_wrapper (&klass->byval_arg);
918 else {
919 mono_error_set_bad_image_name (error, module->aot_name, "Unknown AOT wrapper type %d", wrapper_type);
920 return FALSE;
921 }
922 break;
923 }
924 #endif
925 case MONO_WRAPPER_ALLOC: {
926 int atype = decode_value (p, &p);
927 ManagedAllocatorVariant variant =
928 mono_profiler_allocations_enabled () ?
929 MANAGED_ALLOCATOR_PROFILER : MANAGED_ALLOCATOR_REGULAR;
930
931 ref->method = mono_gc_get_managed_allocator_by_type (atype, variant);
932 /* Try to fallback to the slow path version */
933 if (!ref->method)
934 ref->method = mono_gc_get_managed_allocator_by_type (atype, MANAGED_ALLOCATOR_SLOW_PATH);
935 if (!ref->method) {
936 mono_error_set_bad_image_name (error, module->aot_name, "Error: No managed allocator, but we need one for AOT.\nAre you using non-standard GC options?\n");
937 return FALSE;
938 }
939 break;
940 }
941 case MONO_WRAPPER_WRITE_BARRIER: {
942 ref->method = mono_gc_get_write_barrier ();
943 break;
944 }
945 case MONO_WRAPPER_STELEMREF: {
946 int subtype = decode_value (p, &p);
947
948 if (subtype == WRAPPER_SUBTYPE_NONE) {
949 ref->method = mono_marshal_get_stelemref ();
950 } else if (subtype == WRAPPER_SUBTYPE_VIRTUAL_STELEMREF) {
951 int kind;
952
953 kind = decode_value (p, &p);
954
955 /* Can't decode this */
956 if (!target)
957 return FALSE;
958 if (target->wrapper_type == MONO_WRAPPER_STELEMREF) {
959 info = mono_marshal_get_wrapper_info (target);
960
961 g_assert (info);
962 if (info->subtype == subtype && info->d.virtual_stelemref.kind == kind)
963 ref->method = target;
964 else
965 return FALSE;
966 } else {
967 return FALSE;
968 }
969 } else {
970 mono_error_set_bad_image_name (error, module->aot_name, "Invalid STELEMREF subtype %d", subtype);
971 return FALSE;
972 }
973 break;
974 }
975 case MONO_WRAPPER_SYNCHRONIZED: {
976 MonoMethod *m = decode_resolve_method_ref (module, p, &p, error);
977 if (!m)
978 return FALSE;
979 ref->method = mono_marshal_get_synchronized_wrapper (m);
980 break;
981 }
982 case MONO_WRAPPER_UNKNOWN: {
983 int subtype = decode_value (p, &p);
984
985 if (subtype == WRAPPER_SUBTYPE_PTR_TO_STRUCTURE || subtype == WRAPPER_SUBTYPE_STRUCTURE_TO_PTR) {
986 MonoClass *klass = decode_klass_ref (module, p, &p, error);
987 if (!klass)
988 return FALSE;
989
990 if (!target)
991 return FALSE;
992 if (klass != target->klass)
993 return FALSE;
994
995 if (subtype == WRAPPER_SUBTYPE_PTR_TO_STRUCTURE) {
996 if (strcmp (target->name, "PtrToStructure"))
997 return FALSE;
998 ref->method = mono_marshal_get_ptr_to_struct (klass);
999 } else {
1000 if (strcmp (target->name, "StructureToPtr"))
1001 return FALSE;
1002 ref->method = mono_marshal_get_struct_to_ptr (klass);
1003 }
1004 } else if (subtype == WRAPPER_SUBTYPE_SYNCHRONIZED_INNER) {
1005 MonoMethod *m = decode_resolve_method_ref (module, p, &p, error);
1006 if (!m)
1007 return FALSE;
1008 ref->method = mono_marshal_get_synchronized_inner_wrapper (m);
1009 } else if (subtype == WRAPPER_SUBTYPE_ARRAY_ACCESSOR) {
1010 MonoMethod *m = decode_resolve_method_ref (module, p, &p, error);
1011 if (!m)
1012 return FALSE;
1013 ref->method = mono_marshal_get_array_accessor_wrapper (m);
1014 } else if (subtype == WRAPPER_SUBTYPE_GSHAREDVT_IN) {
1015 ref->method = mono_marshal_get_gsharedvt_in_wrapper ();
1016 } else if (subtype == WRAPPER_SUBTYPE_GSHAREDVT_OUT) {
1017 ref->method = mono_marshal_get_gsharedvt_out_wrapper ();
1018 } else if (subtype == WRAPPER_SUBTYPE_INTERP_IN) {
1019 ref->method = mini_get_interp_in_wrapper (target->signature);
1020 } else if (subtype == WRAPPER_SUBTYPE_GSHAREDVT_IN_SIG) {
1021 MonoMethodSignature *sig = decode_signature (module, p, &p);
1022 if (!sig)
1023 return FALSE;
1024 ref->method = mini_get_gsharedvt_in_sig_wrapper (sig);
1025 } else if (subtype == WRAPPER_SUBTYPE_GSHAREDVT_OUT_SIG) {
1026 MonoMethodSignature *sig = decode_signature (module, p, &p);
1027 if (!sig)
1028 return FALSE;
1029 ref->method = mini_get_gsharedvt_out_sig_wrapper (sig);
1030 } else {
1031 mono_error_set_bad_image_name (error, module->aot_name, "Invalid UNKNOWN wrapper subtype %d", subtype);
1032 return FALSE;
1033 }
1034 break;
1035 }
1036 case MONO_WRAPPER_MANAGED_TO_MANAGED: {
1037 int subtype = decode_value (p, &p);
1038
1039 if (subtype == WRAPPER_SUBTYPE_ELEMENT_ADDR) {
1040 int rank = decode_value (p, &p);
1041 int elem_size = decode_value (p, &p);
1042
1043 ref->method = mono_marshal_get_array_address (rank, elem_size);
1044 } else if (subtype == WRAPPER_SUBTYPE_STRING_CTOR) {
1045 MonoMethod *m;
1046
1047 m = decode_resolve_method_ref (module, p, &p, error);
1048 if (!m)
1049 return FALSE;
1050
1051 if (!target)
1052 return FALSE;
1053 g_assert (target->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED);
1054
1055 info = mono_marshal_get_wrapper_info (target);
1056 if (info && info->subtype == subtype && info->d.string_ctor.method == m)
1057 ref->method = target;
1058 else
1059 return FALSE;
1060 }
1061 break;
1062 }
1063 case MONO_WRAPPER_MANAGED_TO_NATIVE: {
1064 MonoMethod *m;
1065 int subtype = decode_value (p, &p);
1066 char *name;
1067
1068 if (subtype == WRAPPER_SUBTYPE_ICALL_WRAPPER) {
1069 if (!target)
1070 return FALSE;
1071
1072 name = (char*)p;
1073 if (strcmp (target->name, name) != 0)
1074 return FALSE;
1075 ref->method = target;
1076 } else {
1077 m = decode_resolve_method_ref (module, p, &p, error);
1078 if (!m)
1079 return FALSE;
1080
1081 /* This should only happen when looking for an extra method */
1082 if (!target)
1083 return FALSE;
1084 if (mono_marshal_method_from_wrapper (target) == m)
1085 ref->method = target;
1086 else
1087 return FALSE;
1088 }
1089 break;
1090 }
1091 case MONO_WRAPPER_CASTCLASS: {
1092 int subtype = decode_value (p, &p);
1093
1094 if (subtype == WRAPPER_SUBTYPE_CASTCLASS_WITH_CACHE)
1095 ref->method = mono_marshal_get_castclass_with_cache ();
1096 else if (subtype == WRAPPER_SUBTYPE_ISINST_WITH_CACHE)
1097 ref->method = mono_marshal_get_isinst_with_cache ();
1098 else {
1099 mono_error_set_bad_image_name (error, module->aot_name, "Invalid CASTCLASS wrapper subtype %d", subtype);
1100 return FALSE;
1101 }
1102 break;
1103 }
1104 case MONO_WRAPPER_RUNTIME_INVOKE: {
1105 int subtype = decode_value (p, &p);
1106
1107 if (!target)
1108 return FALSE;
1109
1110 if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_DYNAMIC) {
1111 if (strcmp (target->name, "runtime_invoke_dynamic") != 0)
1112 return FALSE;
1113 ref->method = target;
1114 } else if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_DIRECT) {
1115 /* Direct wrapper */
1116 MonoMethod *m = decode_resolve_method_ref (module, p, &p, error);
1117 if (!m)
1118 return FALSE;
1119 ref->method = mono_marshal_get_runtime_invoke (m, FALSE);
1120 } else if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_VIRTUAL) {
1121 /* Virtual direct wrapper */
1122 MonoMethod *m = decode_resolve_method_ref (module, p, &p, error);
1123 if (!m)
1124 return FALSE;
1125 ref->method = mono_marshal_get_runtime_invoke (m, TRUE);
1126 } else {
1127 MonoMethodSignature *sig;
1128
1129 sig = decode_signature_with_target (module, NULL, p, &p);
1130 info = mono_marshal_get_wrapper_info (target);
1131 g_assert (info);
1132
1133 if (info->subtype != subtype)
1134 return FALSE;
1135 g_assert (info->d.runtime_invoke.sig);
1136 if (mono_metadata_signature_equal (sig, info->d.runtime_invoke.sig))
1137 ref->method = target;
1138 else
1139 return FALSE;
1140 }
1141 break;
1142 }
1143 case MONO_WRAPPER_DELEGATE_INVOKE:
1144 case MONO_WRAPPER_DELEGATE_BEGIN_INVOKE:
1145 case MONO_WRAPPER_DELEGATE_END_INVOKE: {
1146 gboolean is_inflated = decode_value (p, &p);
1147 WrapperSubtype subtype;
1148
1149 if (is_inflated) {
1150 MonoClass *klass;
1151 MonoMethod *invoke, *wrapper;
1152
1153 klass = decode_klass_ref (module, p, &p, error);
1154 if (!klass)
1155 return FALSE;
1156
1157 switch (wrapper_type) {
1158 case MONO_WRAPPER_DELEGATE_INVOKE:
1159 invoke = mono_get_delegate_invoke (klass);
1160 wrapper = mono_marshal_get_delegate_invoke (invoke, NULL);
1161 break;
1162 case MONO_WRAPPER_DELEGATE_BEGIN_INVOKE:
1163 invoke = mono_get_delegate_begin_invoke (klass);
1164 wrapper = mono_marshal_get_delegate_begin_invoke (invoke);
1165 break;
1166 case MONO_WRAPPER_DELEGATE_END_INVOKE:
1167 invoke = mono_get_delegate_end_invoke (klass);
1168 wrapper = mono_marshal_get_delegate_end_invoke (invoke);
1169 break;
1170 default:
1171 g_assert_not_reached ();
1172 break;
1173 }
1174 if (target) {
1175 /*
1176 * Due to the way mini_get_shared_method () works, we could end up with
1177 * multiple copies of the same wrapper.
1178 */
1179 if (wrapper->klass != target->klass)
1180 return FALSE;
1181 ref->method = target;
1182 } else {
1183 ref->method = wrapper;
1184 }
1185 } else {
1186 /*
1187 * These wrappers are associated with a signature, not with a method.
1188 * Since we can't decode them into methods, they need a target method.
1189 */
1190 if (!target)
1191 return FALSE;
1192
1193 if (wrapper_type == MONO_WRAPPER_DELEGATE_INVOKE) {
1194 subtype = (WrapperSubtype)decode_value (p, &p);
1195 info = mono_marshal_get_wrapper_info (target);
1196 if (info) {
1197 if (info->subtype != subtype)
1198 return FALSE;
1199 } else {
1200 if (subtype != WRAPPER_SUBTYPE_NONE)
1201 return FALSE;
1202 }
1203 }
1204 if (sig_matches_target (module, target, p, &p))
1205 ref->method = target;
1206 else
1207 return FALSE;
1208 }
1209 break;
1210 }
1211 case MONO_WRAPPER_NATIVE_TO_MANAGED: {
1212 MonoMethod *m;
1213 MonoClass *klass;
1214
1215 m = decode_resolve_method_ref (module, p, &p, error);
1216 if (!m)
1217 return FALSE;
1218 klass = decode_klass_ref (module, p, &p, error);
1219 if (!klass)
1220 return FALSE;
1221 ref->method = mono_marshal_get_managed_wrapper (m, klass, 0, error);
1222 if (!mono_error_ok (error))
1223 return FALSE;
1224 break;
1225 }
1226 default:
1227 g_assert_not_reached ();
1228 }
1229 } else if (image_index == MONO_AOT_METHODREF_METHODSPEC) {
1230 image_index = decode_value (p, &p);
1231 ref->token = decode_value (p, &p);
1232
1233 image = load_image (module, image_index, error);
1234 if (!image)
1235 return FALSE;
1236 } else if (image_index == MONO_AOT_METHODREF_GINST) {
1237 MonoClass *klass;
1238 MonoGenericContext ctx;
1239
1240 /*
1241 * These methods do not have a token which resolves them, so we
1242 * resolve them immediately.
1243 */
1244 klass = decode_klass_ref (module, p, &p, error);
1245 if (!klass)
1246 return FALSE;
1247
1248 if (target && target->klass != klass)
1249 return FALSE;
1250
1251 image_index = decode_value (p, &p);
1252 ref->token = decode_value (p, &p);
1253
1254 image = load_image (module, image_index, error);
1255 if (!image)
1256 return FALSE;
1257
1258 ref->method = mono_get_method_checked (image, ref->token, NULL, NULL, error);
1259 if (!ref->method)
1260 return FALSE;
1261
1262
1263 memset (&ctx, 0, sizeof (ctx));
1264
1265 if (FALSE && mono_class_is_ginst (klass)) {
1266 ctx.class_inst = mono_class_get_generic_class (klass)->context.class_inst;
1267 ctx.method_inst = NULL;
1268
1269 ref->method = mono_class_inflate_generic_method_full_checked (ref->method, klass, &ctx, error);
1270 if (!ref->method)
1271 return FALSE;
1272 }
1273
1274 memset (&ctx, 0, sizeof (ctx));
1275
1276 if (!decode_generic_context (module, &ctx, p, &p, error))
1277 return FALSE;
1278
1279 ref->method = mono_class_inflate_generic_method_full_checked (ref->method, klass, &ctx, error);
1280 if (!ref->method)
1281 return FALSE;
1282
1283 } else if (image_index == MONO_AOT_METHODREF_ARRAY) {
1284 MonoClass *klass;
1285 int method_type;
1286
1287 klass = decode_klass_ref (module, p, &p, error);
1288 if (!klass)
1289 return FALSE;
1290 method_type = decode_value (p, &p);
1291 switch (method_type) {
1292 case 0:
1293 ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank);
1294 break;
1295 case 1:
1296 ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank * 2);
1297 break;
1298 case 2:
1299 ref->method = mono_class_get_method_from_name (klass, "Get", -1);
1300 break;
1301 case 3:
1302 ref->method = mono_class_get_method_from_name (klass, "Address", -1);
1303 break;
1304 case 4:
1305 ref->method = mono_class_get_method_from_name (klass, "Set", -1);
1306 break;
1307 default:
1308 mono_error_set_bad_image_name (error, module->aot_name, "Invalid METHODREF_ARRAY method type %d", method_type);
1309 return FALSE;
1310 }
1311 } else {
1312 if (image_index == MONO_AOT_METHODREF_LARGE_IMAGE_INDEX) {
1313 image_index = decode_value (p, &p);
1314 value = decode_value (p, &p);
1315 }
1316
1317 ref->token = MONO_TOKEN_METHOD_DEF | (value & 0xffffff);
1318
1319 image = load_image (module, image_index, error);
1320 if (!image)
1321 return FALSE;
1322 }
1323
1324 *endbuf = p;
1325
1326 ref->image = image;
1327
1328 return TRUE;
1329 }
1330
1331 static gboolean
1332 decode_method_ref (MonoAotModule *module, MethodRef *ref, guint8 *buf, guint8 **endbuf, MonoError *error)
1333 {
1334 return decode_method_ref_with_target (module, ref, NULL, buf, endbuf, error);
1335 }
1336
1337 /*
1338 * decode_resolve_method_ref_with_target:
1339 *
1340 * Similar to decode_method_ref, but resolve and return the method itself.
1341 */
1342 static MonoMethod*
1343 decode_resolve_method_ref_with_target (MonoAotModule *module, MonoMethod *target, guint8 *buf, guint8 **endbuf, MonoError *error)
1344 {
1345 MethodRef ref;
1346
1347 error_init (error);
1348
1349 if (!decode_method_ref_with_target (module, &ref, target, buf, endbuf, error))
1350 return NULL;
1351 if (ref.method)
1352 return ref.method;
1353 if (!ref.image) {
1354 mono_error_set_bad_image_name (error, module->aot_name, "No image found for methodref with target");
1355 return NULL;
1356 }
1357 return mono_get_method_checked (ref.image, ref.token, NULL, NULL, error);
1358 }
1359
1360 static MonoMethod*
1361 decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf, MonoError *error)
1362 {
1363 return decode_resolve_method_ref_with_target (module, NULL, buf, endbuf, error);
1364 }
1365
1366 #ifdef ENABLE_AOT_CACHE
1367
1368 /* AOT CACHE */
1369
1370 /*
1371 * FIXME:
1372 * - Add options for controlling the cache size
1373 * - Handle full cache by deleting old assemblies lru style
1374 * - Maybe add a threshold after an assembly is AOT compiled
1375 * - Add options for enabling this for specific main assemblies
1376 */
1377
1378 /* The cache directory */
1379 static char *cache_dir;
1380
1381 /* The number of assemblies AOTed in this run */
1382 static int cache_count;
1383
1384 /* Whenever to AOT in-process */
1385 static gboolean in_process;
1386
1387 static void
1388 collect_assemblies (gpointer data, gpointer user_data)
1389 {
1390 MonoAssembly *ass = data;
1391 GSList **l = user_data;
1392
1393 *l = g_slist_prepend (*l, ass);
1394 }
1395
1396 #define SHA1_DIGEST_LENGTH 20
1397
1398 /*
1399 * get_aot_config_hash:
1400 *
1401 * Return a hash for all the version information an AOT module depends on.
1402 */
1403 static G_GNUC_UNUSED char*
1404 get_aot_config_hash (MonoAssembly *assembly)
1405 {
1406 char *build_info;
1407 GSList *l, *assembly_list = NULL;
1408 GString *s;
1409 int i;
1410 guint8 digest [SHA1_DIGEST_LENGTH];
1411 char *digest_str;
1412
1413 build_info = mono_get_runtime_build_info ();
1414
1415 s = g_string_new (build_info);
1416
1417 mono_assembly_foreach (collect_assemblies, &assembly_list);
1418
1419 /*
1420 * The assembly list includes the current assembly as well, no need
1421 * to add it.
1422 */
1423 for (l = assembly_list; l; l = l->next) {
1424 MonoAssembly *ass = l->data;
1425
1426 g_string_append (s, "_");
1427 g_string_append (s, ass->aname.name);
1428 g_string_append (s, "_");
1429 g_string_append (s, ass->image->guid);
1430 }
1431
1432 for (i = 0; i < s->len; ++i) {
1433 if (!isalnum (s->str [i]) && s->str [i] != '-')
1434 s->str [i] = '_';
1435 }
1436
1437 mono_sha1_get_digest ((guint8*)s->str, s->len, digest);
1438
1439 digest_str = g_malloc0 ((SHA1_DIGEST_LENGTH * 2) + 1);
1440 for (i = 0; i < SHA1_DIGEST_LENGTH; ++i)
1441 sprintf (digest_str + (i * 2), "%02x", digest [i]);
1442
1443 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: file dependencies: %s, hash %s", s->str, digest_str);
1444
1445 g_string_free (s, TRUE);
1446
1447 return digest_str;
1448 }
1449
1450 static void
1451 aot_cache_init (void)
1452 {
1453 if (mono_aot_only)
1454 return;
1455 enable_aot_cache = TRUE;
1456 in_process = TRUE;
1457 }
1458
1459 /*
1460 * aot_cache_load_module:
1461 *
1462 * Load the AOT image corresponding to ASSEMBLY from the aot cache, AOTing it if neccessary.
1463 */
1464 static MonoDl*
1465 aot_cache_load_module (MonoAssembly *assembly, char **aot_name)
1466 {
1467 MonoAotCacheConfig *config;
1468 GSList *l;
1469 char *fname, *tmp2, *aot_options, *failure_fname;
1470 const char *home;
1471 MonoDl *module;
1472 gboolean res;
1473 gint exit_status;
1474 char *hash;
1475 int pid;
1476 gboolean enabled;
1477 FILE *failure_file;
1478
1479 *aot_name = NULL;
1480
1481 if (image_is_dynamic (assembly->image))
1482 return NULL;
1483
1484 /* Check in the list of assemblies enabled for aot caching */
1485 config = mono_get_aot_cache_config ();
1486
1487 enabled = FALSE;
1488 if (config->apps) {
1489 MonoDomain *domain = mono_domain_get ();
1490 MonoAssembly *entry_assembly = domain->entry_assembly;
1491
1492 // FIXME: This cannot be used for mscorlib during startup, since entry_assembly is not set yet
1493 for (l = config->apps; l; l = l->next) {
1494 char *n = l->data;
1495
1496 if ((entry_assembly && !strcmp (entry_assembly->aname.name, n)) || (!entry_assembly && !strcmp (assembly->aname.name, n)))
1497 break;
1498 }
1499 if (l)
1500 enabled = TRUE;
1501 }
1502
1503 if (!enabled) {
1504 for (l = config->assemblies; l; l = l->next) {
1505 char *n = l->data;
1506
1507 if (!strcmp (assembly->aname.name, n))
1508 break;
1509 }
1510 if (l)
1511 enabled = TRUE;
1512 }
1513 if (!enabled)
1514 return NULL;
1515
1516 if (!cache_dir) {
1517 home = g_get_home_dir ();
1518 if (!home)
1519 return NULL;
1520 cache_dir = g_strdup_printf ("%s/Library/Caches/mono/aot-cache", home);
1521 if (!g_file_test (cache_dir, G_FILE_TEST_EXISTS|G_FILE_TEST_IS_DIR))
1522 g_mkdir_with_parents (cache_dir, 0777);
1523 }
1524
1525 /*
1526 * The same assembly can be used in multiple configurations, i.e. multiple
1527 * versions of the runtime, with multiple versions of dependent assemblies etc.
1528 * To handle this, we compute a version string containing all this information, hash it,
1529 * and use the hash as a filename suffix.
1530 */
1531 hash = get_aot_config_hash (assembly);
1532
1533 tmp2 = g_strdup_printf ("%s-%s%s", assembly->image->assembly_name, hash, MONO_SOLIB_EXT);
1534 fname = g_build_filename (cache_dir, tmp2, NULL);
1535 *aot_name = fname;
1536 g_free (tmp2);
1537
1538 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: loading from cache: '%s'.", fname);
1539 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
1540
1541 if (module) {
1542 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: found in cache: '%s'.", fname);
1543 return module;
1544 }
1545
1546 if (!strcmp (assembly->aname.name, "mscorlib") && !mscorlib_aot_loaded)
1547 /*
1548 * Can't AOT this during startup, so we AOT it when called later from
1549 * mono_aot_get_method ().
1550 */
1551 return NULL;
1552
1553 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: not found.");
1554
1555 /* Only AOT one assembly per run to avoid slowing down execution too much */
1556 if (cache_count > 0)
1557 return NULL;
1558 cache_count ++;
1559
1560 /* Check for previous failure */
1561 failure_fname = g_strdup_printf ("%s.failure", fname);
1562 failure_file = fopen (failure_fname, "r");
1563 if (failure_file) {
1564 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: assembly '%s' previously failed to compile '%s' ('%s')... ", assembly->image->name, fname, failure_fname);
1565 g_free (failure_fname);
1566 return NULL;
1567 } else {
1568 g_free (failure_fname);
1569 fclose (failure_file);
1570 }
1571
1572 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: compiling assembly '%s', logfile: '%s.log'... ", assembly->image->name, fname);
1573
1574 /*
1575 * We need to invoke the AOT compiler here. There are multiple approaches:
1576 * - spawn a new runtime process. This can be hard when running with mkbundle, and
1577 * its hard to make the new process load the same set of assemblies.
1578 * - doing it in-process. This exposes the current process to bugs/leaks/side effects of
1579 * the AOT compiler.
1580 * - fork a new process and do the work there.
1581 */
1582 if (in_process) {
1583 aot_options = g_strdup_printf ("outfile=%s,internal-logfile=%s.log%s%s", fname, fname, config->aot_options ? "," : "", config->aot_options ? config->aot_options : "");
1584 /* Maybe due this in another thread ? */
1585 res = mono_compile_assembly (assembly, mono_parse_default_optimizations (NULL), aot_options);
1586 if (res) {
1587 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: compilation failed.");
1588 failure_fname = g_strdup_printf ("%s.failure", fname);
1589 failure_file = fopen (failure_fname, "a+");
1590 fclose (failure_file);
1591 g_free (failure_fname);
1592 } else {
1593 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: compilation succeeded.");
1594 }
1595 } else {
1596 /*
1597 * - Avoid waiting for the aot process to finish ?
1598 * (less overhead, but multiple processes could aot the same assembly at the same time)
1599 */
1600 pid = fork ();
1601 if (pid == 0) {
1602 FILE *logfile;
1603 char *logfile_name;
1604
1605 /* Child */
1606
1607 logfile_name = g_strdup_printf ("%s/aot.log", cache_dir);
1608 logfile = fopen (logfile_name, "a+");
1609 g_free (logfile_name);
1610
1611 dup2 (fileno (logfile), 1);
1612 dup2 (fileno (logfile), 2);
1613
1614 aot_options = g_strdup_printf ("outfile=%s", fname);
1615 res = mono_compile_assembly (assembly, mono_parse_default_optimizations (NULL), aot_options);
1616 if (!res) {
1617 exit (1);
1618 } else {
1619 exit (0);
1620 }
1621 } else {
1622 /* Parent */
1623 waitpid (pid, &exit_status, 0);
1624 if (!WIFEXITED (exit_status) && (WEXITSTATUS (exit_status) == 0))
1625 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: failed.");
1626 else
1627 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: succeeded.");
1628 }
1629 }
1630
1631 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
1632
1633 return module;
1634 }
1635
1636 #else
1637
1638 static void
1639 aot_cache_init (void)
1640 {
1641 }
1642
1643 static MonoDl*
1644 aot_cache_load_module (MonoAssembly *assembly, char **aot_name)
1645 {
1646 return NULL;
1647 }
1648
1649 #endif
1650
1651 static void
1652 find_symbol (MonoDl *module, gpointer *globals, const char *name, gpointer *value)
1653 {
1654 if (globals) {
1655 int global_index;
1656 guint16 *table, *entry;
1657 guint16 table_size;
1658 guint32 hash;
1659 char *symbol = (char*)name;
1660
1661 #ifdef TARGET_MACH
1662 symbol = g_strdup_printf ("_%s", name);
1663 #endif
1664
1665 /* The first entry points to the hash */
1666 table = (guint16 *)globals [0];
1667 globals ++;
1668
1669 table_size = table [0];
1670 table ++;
1671
1672 hash = mono_metadata_str_hash (symbol) % table_size;
1673
1674 entry = &table [hash * 2];
1675
1676 /* Search the hash for the index into the globals table */
1677 global_index = -1;
1678 while (entry [0] != 0) {
1679 guint32 index = entry [0] - 1;
1680 guint32 next = entry [1];
1681
1682 //printf ("X: %s %s\n", (char*)globals [index * 2], name);
1683
1684 if (!strcmp (globals [index * 2], symbol)) {
1685 global_index = index;
1686 break;
1687 }
1688
1689 if (next != 0) {
1690 entry = &table [next * 2];
1691 } else {
1692 break;
1693 }
1694 }
1695
1696 if (global_index != -1)
1697 *value = globals [global_index * 2 + 1];
1698 else
1699 *value = NULL;
1700
1701 if (symbol != name)
1702 g_free (symbol);
1703 } else {
1704 char *err = mono_dl_symbol (module, name, value);
1705
1706 if (err)
1707 g_free (err);
1708 }
1709 }
1710
1711 static void
1712 find_amodule_symbol (MonoAotModule *amodule, const char *name, gpointer *value)
1713 {
1714 g_assert (!(amodule->info.flags & MONO_AOT_FILE_FLAG_LLVM_ONLY));
1715
1716 find_symbol (amodule->sofile, amodule->globals, name, value);
1717 }
1718
1719 void
1720 mono_install_load_aot_data_hook (MonoLoadAotDataFunc load_func, MonoFreeAotDataFunc free_func, gpointer user_data)
1721 {
1722 aot_data_load_func = load_func;
1723 aot_data_free_func = free_func;
1724 aot_data_func_user_data = user_data;
1725 }
1726
1727 /* Load the separate aot data file for ASSEMBLY */
1728 static guint8*
1729 open_aot_data (MonoAssembly *assembly, MonoAotFileInfo *info, void **ret_handle)
1730 {
1731 MonoFileMap *map;
1732 char *filename;
1733 guint8 *data;
1734
1735 if (aot_data_load_func) {
1736 data = aot_data_load_func (assembly, info->datafile_size, aot_data_func_user_data, ret_handle);
1737 g_assert (data);
1738 return data;
1739 }
1740
1741 /*
1742 * Use <assembly name>.aotdata as the default implementation if no callback is given
1743 */
1744 filename = g_strdup_printf ("%s.aotdata", assembly->image->name);
1745 map = mono_file_map_open (filename);
1746 g_assert (map);
1747 data = mono_file_map (info->datafile_size, MONO_MMAP_READ, mono_file_map_fd (map), 0, ret_handle);
1748 g_assert (data);
1749
1750 return data;
1751 }
1752
1753 static gboolean
1754 check_usable (MonoAssembly *assembly, MonoAotFileInfo *info, guint8 *blob, char **out_msg)
1755 {
1756 char *build_info;
1757 char *msg = NULL;
1758 gboolean usable = TRUE;
1759 gboolean full_aot, safepoints;
1760 guint32 excluded_cpu_optimizations;
1761
1762 if (strcmp (assembly->image->guid, info->assembly_guid)) {
1763 msg = g_strdup_printf ("doesn't match assembly");
1764 usable = FALSE;
1765 }
1766
1767 build_info = mono_get_runtime_build_info ();
1768 if (strlen ((const char *)info->runtime_version) > 0 && strcmp (info->runtime_version, build_info)) {
1769 msg = g_strdup_printf ("compiled against runtime version '%s' while this runtime has version '%s'", info->runtime_version, build_info);
1770 usable = FALSE;
1771 }
1772 g_free (build_info);
1773
1774 full_aot = info->flags & MONO_AOT_FILE_FLAG_FULL_AOT;
1775
1776 if (mono_aot_only && !full_aot) {
1777 msg = g_strdup_printf ("not compiled with --aot=full");
1778 usable = FALSE;
1779 }
1780 if (!mono_aot_only && full_aot) {
1781 msg = g_strdup_printf ("compiled with --aot=full");
1782 usable = FALSE;
1783 }
1784 if (mono_llvm_only && !(info->flags & MONO_AOT_FILE_FLAG_LLVM_ONLY)) {
1785 msg = g_strdup_printf ("not compiled with --aot=llvmonly");
1786 usable = FALSE;
1787 }
1788 if (mini_get_debug_options ()->mdb_optimizations && !(info->flags & MONO_AOT_FILE_FLAG_DEBUG) && !full_aot) {
1789 msg = g_strdup_printf ("not compiled for debugging");
1790 usable = FALSE;
1791 }
1792
1793 mono_arch_cpu_optimizations (&excluded_cpu_optimizations);
1794 if (info->opts & excluded_cpu_optimizations) {
1795 msg = g_strdup_printf ("compiled with unsupported CPU optimizations");
1796 usable = FALSE;
1797 }
1798
1799 if (!mono_aot_only && (info->simd_opts & ~mono_arch_cpu_enumerate_simd_versions ())) {
1800 msg = g_strdup_printf ("compiled with unsupported SIMD extensions");
1801 usable = FALSE;
1802 }
1803
1804 if (info->gc_name_index != -1) {
1805 char *gc_name = (char*)&blob [info->gc_name_index];
1806 const char *current_gc_name = mono_gc_get_gc_name ();
1807
1808 if (strcmp (current_gc_name, gc_name) != 0) {
1809 msg = g_strdup_printf ("compiled against GC %s, while the current runtime uses GC %s.\n", gc_name, current_gc_name);
1810 usable = FALSE;
1811 }
1812 }
1813
1814 safepoints = info->flags & MONO_AOT_FILE_FLAG_SAFEPOINTS;
1815
1816 if (!safepoints && mono_threads_is_coop_enabled ()) {
1817 msg = g_strdup_printf ("not compiled with safepoints");
1818 usable = FALSE;
1819 }
1820
1821 *out_msg = msg;
1822 return usable;
1823 }
1824
1825 /*
1826 * TABLE should point to a table of call instructions. Return the address called by the INDEXth entry.
1827 */
1828 static void*
1829 get_call_table_entry (void *table, int index)
1830 {
1831 #if defined(TARGET_ARM)
1832 guint32 *ins_addr;
1833 guint32 ins;
1834 gint32 offset;
1835
1836 ins_addr = (guint32*)table + index;
1837 ins = *ins_addr;
1838 if ((ins >> ARMCOND_SHIFT) == ARMCOND_NV) {
1839 /* blx */
1840 offset = (((int)(((ins & 0xffffff) << 1) | ((ins >> 24) & 0x1))) << 7) >> 7;
1841 return (char*)ins_addr + (offset * 2) + 8 + 1;
1842 } else {
1843 offset = (((int)ins & 0xffffff) << 8) >> 8;
1844 return (char*)ins_addr + (offset * 4) + 8;
1845 }
1846 #elif defined(TARGET_ARM64)
1847 return mono_arch_get_call_target ((guint8*)table + (index * 4) + 4);
1848 #elif defined(TARGET_X86) || defined(TARGET_AMD64)
1849 /* The callee expects an ip which points after the call */
1850 return mono_arch_get_call_target ((guint8*)table + (index * 5) + 5);
1851 #else
1852 g_assert_not_reached ();
1853 return NULL;
1854 #endif
1855 }
1856
1857 /*
1858 * init_amodule_got:
1859 *
1860 * Initialize the shared got entries for AMODULE.
1861 */
1862 static void
1863 init_amodule_got (MonoAotModule *amodule)
1864 {
1865 MonoJumpInfo *ji;
1866 MonoMemPool *mp;
1867 MonoJumpInfo *patches;
1868 guint32 got_offsets [128];
1869 MonoError error;
1870 int i, npatches;
1871
1872 /* These can't be initialized in load_aot_module () */
1873 if (amodule->shared_got [0] || amodule->got_initializing)
1874 return;
1875
1876 amodule->got_initializing = TRUE;
1877
1878 mp = mono_mempool_new ();
1879 npatches = amodule->info.nshared_got_entries;
1880 for (i = 0; i < npatches; ++i)
1881 got_offsets [i] = i;
1882 patches = decode_patches (amodule, mp, npatches, FALSE, got_offsets);
1883 g_assert (patches);
1884 for (i = 0; i < npatches; ++i) {
1885 ji = &patches [i];
1886
1887 if (ji->type == MONO_PATCH_INFO_GC_CARD_TABLE_ADDR && !mono_gc_is_moving ()) {
1888 amodule->shared_got [i] = NULL;
1889 } else if (ji->type == MONO_PATCH_INFO_GC_NURSERY_START && !mono_gc_is_moving ()) {
1890 amodule->shared_got [i] = NULL;
1891 } else if (ji->type == MONO_PATCH_INFO_GC_NURSERY_BITS && !mono_gc_is_moving ()) {
1892 amodule->shared_got [i] = NULL;
1893 } else if (ji->type == MONO_PATCH_INFO_IMAGE) {
1894 amodule->shared_got [i] = amodule->assembly->image;
1895 } else if (ji->type == MONO_PATCH_INFO_MSCORLIB_GOT_ADDR) {
1896 if (mono_defaults.corlib) {
1897 MonoAotModule *mscorlib_amodule = (MonoAotModule *)mono_defaults.corlib->aot_module;
1898
1899 if (mscorlib_amodule)
1900 amodule->shared_got [i] = mscorlib_amodule->got;
1901 } else {
1902 amodule->shared_got [i] = amodule->got;
1903 }
1904 } else if (ji->type == MONO_PATCH_INFO_AOT_MODULE) {
1905 amodule->shared_got [i] = amodule;
1906 } else {
1907 amodule->shared_got [i] = mono_resolve_patch_target (NULL, mono_get_root_domain (), NULL, ji, FALSE, &error);
1908 mono_error_assert_ok (&error);
1909 }
1910 }
1911
1912 if (amodule->got) {
1913 for (i = 0; i < npatches; ++i)
1914 amodule->got [i] = amodule->shared_got [i];
1915 }
1916 if (amodule->llvm_got) {
1917 for (i = 0; i < npatches; ++i)
1918 amodule->llvm_got [i] = amodule->shared_got [i];
1919 }
1920
1921 mono_mempool_destroy (mp);
1922 }
1923
1924 static void
1925 load_aot_module (MonoAssembly *assembly, gpointer user_data)
1926 {
1927 char *aot_name, *found_aot_name;
1928 MonoAotModule *amodule;
1929 MonoDl *sofile;
1930 gboolean usable = TRUE;
1931 char *version_symbol = NULL;
1932 char *msg = NULL;
1933 gpointer *globals = NULL;
1934 MonoAotFileInfo *info = NULL;
1935 int i, version;
1936 gboolean do_load_image = TRUE;
1937 int align_double, align_int64;
1938 guint8 *aot_data = NULL;
1939
1940 if (mono_compile_aot)
1941 return;
1942
1943 if (assembly->image->aot_module)
1944 /*
1945 * Already loaded. This can happen because the assembly loading code might invoke
1946 * the assembly load hooks multiple times for the same assembly.
1947 */
1948 return;
1949
1950 if (image_is_dynamic (assembly->image) || assembly->ref_only || mono_domain_get () != mono_get_root_domain ())
1951 return;
1952
1953 mono_aot_lock ();
1954 if (static_aot_modules)
1955 info = (MonoAotFileInfo *)g_hash_table_lookup (static_aot_modules, assembly->aname.name);
1956 else
1957 info = NULL;
1958 mono_aot_unlock ();
1959
1960 sofile = NULL;
1961
1962 found_aot_name = NULL;
1963
1964 if (info) {
1965 /* Statically linked AOT module */
1966 aot_name = g_strdup_printf ("%s", assembly->aname.name);
1967 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "Found statically linked AOT module '%s'.", aot_name);
1968 if (!(info->flags & MONO_AOT_FILE_FLAG_LLVM_ONLY)) {
1969 globals = (void **)info->globals;
1970 g_assert (globals);
1971 }
1972 found_aot_name = g_strdup (aot_name);
1973 } else {
1974 char *err;
1975
1976 if (enable_aot_cache)
1977 sofile = aot_cache_load_module (assembly, &aot_name);
1978 if (!sofile) {
1979 aot_name = g_strdup_printf ("%s%s", assembly->image->name, MONO_SOLIB_EXT);
1980
1981 sofile = mono_dl_open (aot_name, MONO_DL_LAZY, &err);
1982 if (sofile) {
1983 found_aot_name = g_strdup (aot_name);
1984 } else {
1985 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: image '%s' not found: %s", aot_name, err);
1986 g_free (err);
1987 }
1988 g_free (aot_name);
1989 }
1990 if (!sofile) {
1991 char *basename = g_path_get_basename (assembly->image->name);
1992 aot_name = g_strdup_printf ("%s/mono/aot-cache/%s/%s%s", mono_assembly_getrootdir(), MONO_ARCHITECTURE, basename, MONO_SOLIB_EXT);
1993 g_free (basename);
1994 sofile = mono_dl_open (aot_name, MONO_DL_LAZY, &err);
1995 if (!sofile) {
1996 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: image '%s' not found: %s", aot_name, err);
1997 g_free (err);
1998 }
1999 g_free (aot_name);
2000 }
2001 if (!sofile) {
2002 GList *l;
2003
2004 for (l = mono_aot_paths; l; l = l->next) {
2005 char *path = l->data;
2006
2007 char *basename = g_path_get_basename (assembly->image->name);
2008 aot_name = g_strdup_printf ("%s/%s%s", path, basename, MONO_SOLIB_EXT);
2009 sofile = mono_dl_open (aot_name, MONO_DL_LAZY, &err);
2010 if (sofile) {
2011 found_aot_name = g_strdup (aot_name);
2012 } else {
2013 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: image '%s' not found: %s", aot_name, err);
2014 g_free (err);
2015 }
2016 g_free (basename);
2017 g_free (aot_name);
2018 if (sofile)
2019 break;
2020 }
2021 }
2022 if (!sofile) {
2023 if (mono_aot_only && !mono_use_interpreter && assembly->image->tables [MONO_TABLE_METHOD].rows) {
2024 aot_name = g_strdup_printf ("%s%s", assembly->image->name, MONO_SOLIB_EXT);
2025 g_error ("Failed to load AOT module '%s' in aot-only mode.\n", aot_name);
2026 g_free (aot_name);
2027 }
2028 return;
2029 }
2030 }
2031
2032 if (!info) {
2033 find_symbol (sofile, globals, "mono_aot_version", (gpointer *) &version_symbol);
2034 find_symbol (sofile, globals, "mono_aot_file_info", (gpointer*)&info);
2035 }
2036
2037 // Copy aotid to MonoImage
2038 memcpy(&assembly->image->aotid, info->aotid, 16);
2039
2040 if (version_symbol) {
2041 /* Old file format */
2042 version = atoi (version_symbol);
2043 } else {
2044 g_assert (info);
2045 version = info->version;
2046 }
2047
2048 if (version != MONO_AOT_FILE_VERSION) {
2049 msg = g_strdup_printf ("wrong file format version (expected %d got %d)", MONO_AOT_FILE_VERSION, version);
2050 usable = FALSE;
2051 } else {
2052 guint8 *blob;
2053 void *handle;
2054
2055 if (info->flags & MONO_AOT_FILE_FLAG_SEPARATE_DATA) {
2056 aot_data = open_aot_data (assembly, info, &handle);
2057
2058 blob = aot_data + info->table_offsets [MONO_AOT_TABLE_BLOB];
2059 } else {
2060 blob = (guint8 *)info->blob;
2061 }
2062
2063 usable = check_usable (assembly, info, blob, &msg);
2064 }
2065
2066 if (!usable) {
2067 if (mono_aot_only && !mono_use_interpreter) {
2068 g_error ("Failed to load AOT module '%s' while running in aot-only mode: %s.\n", found_aot_name, msg);
2069 } else {
2070 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: module %s is unusable: %s.", found_aot_name, msg);
2071 }
2072 g_free (msg);
2073 g_free (found_aot_name);
2074 if (sofile)
2075 mono_dl_close (sofile);
2076 assembly->image->aot_module = NULL;
2077 return;
2078 }
2079
2080 /* Sanity check */
2081 align_double = MONO_ABI_ALIGNOF (double);
2082 align_int64 = MONO_ABI_ALIGNOF (gint64);
2083 g_assert (info->double_align == align_double);
2084 g_assert (info->long_align == align_int64);
2085 g_assert (info->generic_tramp_num == MONO_TRAMPOLINE_NUM);
2086
2087 amodule = g_new0 (MonoAotModule, 1);
2088 amodule->aot_name = found_aot_name;
2089 amodule->assembly = assembly;
2090
2091 memcpy (&amodule->info, info, sizeof (*info));
2092
2093 amodule->got = (void **)amodule->info.jit_got;
2094 amodule->llvm_got = (void **)amodule->info.llvm_got;
2095 amodule->globals = globals;
2096 amodule->sofile = sofile;
2097 amodule->method_to_code = g_hash_table_new (mono_aligned_addr_hash, NULL);
2098 amodule->extra_methods = g_hash_table_new (NULL, NULL);
2099 amodule->shared_got = g_new0 (gpointer, info->nshared_got_entries);
2100
2101 if (info->flags & MONO_AOT_FILE_FLAG_SEPARATE_DATA) {
2102 for (i = 0; i < MONO_AOT_TABLE_NUM; ++i)
2103 amodule->tables [i] = aot_data + info->table_offsets [i];
2104 }
2105
2106 mono_os_mutex_init_recursive (&amodule->mutex);
2107
2108 /* Read image table */
2109 {
2110 guint32 table_len, i;
2111 char *table = NULL;
2112
2113 if (info->flags & MONO_AOT_FILE_FLAG_SEPARATE_DATA)
2114 table = amodule->tables [MONO_AOT_TABLE_IMAGE_TABLE];
2115 else
2116 table = (char *)info->image_table;
2117 g_assert (table);
2118
2119 table_len = *(guint32*)table;
2120 table += sizeof (guint32);
2121 amodule->image_table = g_new0 (MonoImage*, table_len);
2122 amodule->image_names = g_new0 (MonoAssemblyName, table_len);
2123 amodule->image_guids = g_new0 (char*, table_len);
2124 amodule->image_table_len = table_len;
2125 for (i = 0; i < table_len; ++i) {
2126 MonoAssemblyName *aname = &(amodule->image_names [i]);
2127
2128 aname->name = g_strdup (table);
2129 table += strlen (table) + 1;
2130 amodule->image_guids [i] = g_strdup (table);
2131 table += strlen (table) + 1;
2132 if (table [0] != 0)
2133 aname->culture = g_strdup (table);
2134 table += strlen (table) + 1;
2135 memcpy (aname->public_key_token, table, strlen (table) + 1);
2136 table += strlen (table) + 1;
2137
2138 table = (char *)ALIGN_PTR_TO (table, 8);
2139 aname->flags = *(guint32*)table;
2140 table += 4;
2141 aname->major = *(guint32*)table;
2142 table += 4;
2143 aname->minor = *(guint32*)table;
2144 table += 4;
2145 aname->build = *(guint32*)table;
2146 table += 4;
2147 aname->revision = *(guint32*)table;
2148 table += 4;
2149 }
2150 }
2151
2152 amodule->jit_code_start = (guint8 *)info->jit_code_start;
2153 amodule->jit_code_end = (guint8 *)info->jit_code_end;
2154 if (info->flags & MONO_AOT_FILE_FLAG_SEPARATE_DATA) {
2155 amodule->blob = amodule->tables [MONO_AOT_TABLE_BLOB];
2156 amodule->method_info_offsets = amodule->tables [MONO_AOT_TABLE_METHOD_INFO_OFFSETS];
2157 amodule->ex_info_offsets = amodule->tables [MONO_AOT_TABLE_EX_INFO_OFFSETS];
2158 amodule->class_info_offsets = amodule->tables [MONO_AOT_TABLE_CLASS_INFO_OFFSETS];
2159 amodule->class_name_table = amodule->tables [MONO_AOT_TABLE_CLASS_NAME];
2160 amodule->extra_method_table = amodule->tables [MONO_AOT_TABLE_EXTRA_METHOD_TABLE];
2161 amodule->extra_method_info_offsets = amodule->tables [MONO_AOT_TABLE_EXTRA_METHOD_INFO_OFFSETS];
2162 amodule->got_info_offsets = amodule->tables [MONO_AOT_TABLE_GOT_INFO_OFFSETS];
2163 amodule->llvm_got_info_offsets = amodule->tables [MONO_AOT_TABLE_LLVM_GOT_INFO_OFFSETS];
2164 } else {
2165 amodule->blob = info->blob;
2166 amodule->method_info_offsets = (guint32 *)info->method_info_offsets;
2167 amodule->ex_info_offsets = (guint32 *)info->ex_info_offsets;
2168 amodule->class_info_offsets = (guint32 *)info->class_info_offsets;
2169 amodule->class_name_table = (guint16 *)info->class_name_table;
2170 amodule->extra_method_table = (guint32 *)info->extra_method_table;
2171 amodule->extra_method_info_offsets = (guint32 *)info->extra_method_info_offsets;
2172 amodule->got_info_offsets = info->got_info_offsets;
2173 amodule->llvm_got_info_offsets = info->llvm_got_info_offsets;
2174 }
2175 amodule->unbox_trampolines = (guint32 *)info->unbox_trampolines;
2176 amodule->unbox_trampolines_end = (guint32 *)info->unbox_trampolines_end;
2177 amodule->unbox_trampoline_addresses = (guint32 *)info->unbox_trampoline_addresses;
2178 amodule->unwind_info = (guint8 *)info->unwind_info;
2179 amodule->mem_begin = amodule->jit_code_start;
2180 amodule->mem_end = (guint8 *)info->mem_end;
2181 amodule->plt = (guint8 *)info->plt;
2182 amodule->plt_end = (guint8 *)info->plt_end;
2183 amodule->mono_eh_frame = (guint8 *)info->mono_eh_frame;
2184 amodule->trampolines [MONO_AOT_TRAMP_SPECIFIC] = (guint8 *)info->specific_trampolines;
2185 amodule->trampolines [MONO_AOT_TRAMP_STATIC_RGCTX] = (guint8 *)info->static_rgctx_trampolines;
2186 amodule->trampolines [MONO_AOT_TRAMP_IMT] = (guint8 *)info->imt_trampolines;
2187 amodule->trampolines [MONO_AOT_TRAMP_GSHAREDVT_ARG] = (guint8 *)info->gsharedvt_arg_trampolines;
2188
2189 if (!strcmp (assembly->aname.name, "mscorlib"))
2190 mscorlib_aot_module = amodule;
2191
2192 /* Compute method addresses */
2193 amodule->methods = (void **)g_malloc0 (amodule->info.nmethods * sizeof (gpointer));
2194 for (i = 0; i < amodule->info.nmethods; ++i) {
2195 void *addr = NULL;
2196
2197 if (amodule->info.llvm_get_method) {
2198 gpointer (*get_method) (int) = (gpointer (*)(int))amodule->info.llvm_get_method;
2199
2200 addr = get_method (i);
2201 }
2202
2203 /* method_addresses () contains a table of branches, since the ios linker can update those correctly */
2204 if (!addr && amodule->info.method_addresses) {
2205 addr = get_call_table_entry (amodule->info.method_addresses, i);
2206 g_assert (addr);
2207 if (addr == amodule->info.method_addresses)
2208 addr = NULL;
2209 }
2210 if (addr == NULL)
2211 amodule->methods [i] = GINT_TO_POINTER (-1);
2212 else
2213 amodule->methods [i] = addr;
2214 }
2215
2216 if (make_unreadable) {
2217 #ifndef TARGET_WIN32
2218 guint8 *addr;
2219 guint8 *page_start, *page_end;
2220 int err, len;
2221
2222 addr = amodule->mem_begin;
2223 g_assert (addr);
2224 len = amodule->mem_end - amodule->mem_begin;
2225
2226 /* Round down in both directions to avoid modifying data which is not ours */
2227 page_start = (guint8 *) (((gssize) (addr)) & ~ (mono_pagesize () - 1)) + mono_pagesize ();
2228 page_end = (guint8 *) (((gssize) (addr + len)) & ~ (mono_pagesize () - 1));
2229 if (page_end > page_start) {
2230 err = mono_mprotect (page_start, (page_end - page_start), MONO_MMAP_NONE);
2231 g_assert (err == 0);
2232 }
2233 #endif
2234 }
2235
2236 /* Compute the boundaries of LLVM code */
2237 if (info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM)
2238 compute_llvm_code_range (amodule, &amodule->llvm_code_start, &amodule->llvm_code_end);
2239
2240 mono_aot_lock ();
2241
2242 if (amodule->jit_code_start) {
2243 aot_code_low_addr = MIN (aot_code_low_addr, (gsize)amodule->jit_code_start);
2244 aot_code_high_addr = MAX (aot_code_high_addr, (gsize)amodule->jit_code_end);
2245 }
2246 if (amodule->llvm_code_start) {
2247 aot_code_low_addr = MIN (aot_code_low_addr, (gsize)amodule->llvm_code_start);
2248 aot_code_high_addr = MAX (aot_code_high_addr, (gsize)amodule->llvm_code_end);
2249 }
2250
2251 g_hash_table_insert (aot_modules, assembly, amodule);
2252 mono_aot_unlock ();
2253
2254 if (amodule->jit_code_start)
2255 mono_jit_info_add_aot_module (assembly->image, amodule->jit_code_start, amodule->jit_code_end);
2256 if (amodule->llvm_code_start)
2257 mono_jit_info_add_aot_module (assembly->image, amodule->llvm_code_start, amodule->llvm_code_end);
2258
2259 assembly->image->aot_module = amodule;
2260
2261 if (mono_aot_only && !mono_llvm_only) {
2262 char *code;
2263 find_amodule_symbol (amodule, "specific_trampolines_page", (gpointer *)&code);
2264 amodule->use_page_trampolines = code != NULL;
2265 /*g_warning ("using page trampolines: %d", amodule->use_page_trampolines);*/
2266 }
2267
2268 /*
2269 * Register the plt region as a single trampoline so we can unwind from this code
2270 */
2271 mono_aot_tramp_info_register (
2272 mono_tramp_info_create (
2273 NULL,
2274 amodule->plt,
2275 amodule->plt_end - amodule->plt,
2276 NULL,
2277 mono_unwind_get_cie_program ()
2278 ),
2279 NULL
2280 );
2281
2282 /*
2283 * Since we store methoddef and classdef tokens when referring to methods/classes in
2284 * referenced assemblies, we depend on the exact versions of the referenced assemblies.
2285 * MS calls this 'hard binding'. This means we have to load all referenced assemblies
2286 * non-lazily, since we can't handle out-of-date errors later.
2287 * The cached class info also depends on the exact assemblies.
2288 */
2289 if (do_load_image) {
2290 for (i = 0; i < amodule->image_table_len; ++i) {
2291 MonoError error;
2292 load_image (amodule, i, &error);
2293 mono_error_cleanup (&error); /* FIXME don't swallow the error */
2294 }
2295 }
2296
2297 if (amodule->out_of_date) {
2298 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: Module %s is unusable because a dependency is out-of-date.", assembly->image->name);
2299 if (mono_aot_only)
2300 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);
2301 } else {
2302 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: image '%s' found.", found_aot_name);
2303 }
2304 }
2305
2306 /*
2307 * mono_aot_register_module:
2308 *
2309 * This should be called by embedding code to register AOT modules statically linked
2310 * into the executable. AOT_INFO should be the value of the
2311 * 'mono_aot_module_<ASSEMBLY_NAME>_info' global symbol from the AOT module.
2312 */
2313 void
2314 mono_aot_register_module (gpointer *aot_info)
2315 {
2316 gpointer *globals;
2317 char *aname;
2318 MonoAotFileInfo *info = (MonoAotFileInfo *)aot_info;
2319
2320 g_assert (info->version == MONO_AOT_FILE_VERSION);
2321
2322 if (!(info->flags & MONO_AOT_FILE_FLAG_LLVM_ONLY)) {
2323 globals = (void **)info->globals;
2324 g_assert (globals);
2325 }
2326
2327 aname = (char *)info->assembly_name;
2328
2329 /* This could be called before startup */
2330 if (aot_modules)
2331 mono_aot_lock ();
2332
2333 if (!static_aot_modules)
2334 static_aot_modules = g_hash_table_new (g_str_hash, g_str_equal);
2335
2336 g_hash_table_insert (static_aot_modules, aname, info);
2337
2338 if (aot_modules)
2339 mono_aot_unlock ();
2340 }
2341
2342 void
2343 mono_aot_init (void)
2344 {
2345 mono_os_mutex_init_recursive (&aot_mutex);
2346 mono_os_mutex_init_recursive (&aot_page_mutex);
2347 aot_modules = g_hash_table_new (NULL, NULL);
2348
2349 mono_install_assembly_load_hook (load_aot_module, NULL);
2350 mono_counters_register ("Async JIT info size", MONO_COUNTER_INT|MONO_COUNTER_JIT, &async_jit_info_size);
2351
2352 char *lastaot = g_getenv ("MONO_LASTAOT");
2353 if (lastaot) {
2354 mono_last_aot_method = atoi (lastaot);
2355 g_free (lastaot);
2356 }
2357 aot_cache_init ();
2358 }
2359
2360 void
2361 mono_aot_cleanup (void)
2362 {
2363 if (aot_jit_icall_hash)
2364 g_hash_table_destroy (aot_jit_icall_hash);
2365 if (aot_modules)
2366 g_hash_table_destroy (aot_modules);
2367 }
2368
2369 static gboolean
2370 decode_cached_class_info (MonoAotModule *module, MonoCachedClassInfo *info, guint8 *buf, guint8 **endbuf)
2371 {
2372 MonoError error;
2373 guint32 flags;
2374 MethodRef ref;
2375 gboolean res;
2376
2377 info->vtable_size = decode_value (buf, &buf);
2378 if (info->vtable_size == -1)
2379 /* Generic type */
2380 return FALSE;
2381 flags = decode_value (buf, &buf);
2382 info->ghcimpl = (flags >> 0) & 0x1;
2383 info->has_finalize = (flags >> 1) & 0x1;
2384 info->has_cctor = (flags >> 2) & 0x1;
2385 info->has_nested_classes = (flags >> 3) & 0x1;
2386 info->blittable = (flags >> 4) & 0x1;
2387 info->has_references = (flags >> 5) & 0x1;
2388 info->has_static_refs = (flags >> 6) & 0x1;
2389 info->no_special_static_fields = (flags >> 7) & 0x1;
2390 info->is_generic_container = (flags >> 8) & 0x1;
2391
2392 if (info->has_cctor) {
2393 res = decode_method_ref (module, &ref, buf, &buf, &error);
2394 mono_error_assert_ok (&error); /* FIXME don't swallow the error */
2395 if (!res)
2396 return FALSE;
2397 info->cctor_token = ref.token;
2398 }
2399 if (info->has_finalize) {
2400 res = decode_method_ref (module, &ref, buf, &buf, &error);
2401 mono_error_assert_ok (&error); /* FIXME don't swallow the error */
2402 if (!res)
2403 return FALSE;
2404 info->finalize_image = ref.image;
2405 info->finalize_token = ref.token;
2406 }
2407
2408 info->instance_size = decode_value (buf, &buf);
2409 info->class_size = decode_value (buf, &buf);
2410 info->packing_size = decode_value (buf, &buf);
2411 info->min_align = decode_value (buf, &buf);
2412
2413 *endbuf = buf;
2414
2415 return TRUE;
2416 }
2417
2418 gpointer
2419 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot, MonoError *error)
2420 {
2421 int i;
2422 MonoClass *klass = vtable->klass;
2423 MonoAotModule *amodule = (MonoAotModule *)klass->image->aot_module;
2424 guint8 *info, *p;
2425 MonoCachedClassInfo class_info;
2426 gboolean err;
2427 MethodRef ref;
2428 gboolean res;
2429 gpointer addr;
2430 MonoError inner_error;
2431
2432 error_init (error);
2433
2434 if (MONO_CLASS_IS_INTERFACE (klass) || klass->rank || !amodule)
2435 return NULL;
2436
2437 info = &amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
2438 p = info;
2439
2440 err = decode_cached_class_info (amodule, &class_info, p, &p);
2441 if (!err)
2442 return NULL;
2443
2444 for (i = 0; i < slot; ++i) {
2445 decode_method_ref (amodule, &ref, p, &p, &inner_error);
2446 mono_error_cleanup (&inner_error); /* FIXME don't swallow the error */
2447 }
2448
2449 res = decode_method_ref (amodule, &ref, p, &p, &inner_error);
2450 mono_error_cleanup (&inner_error); /* FIXME don't swallow the error */
2451 if (!res)
2452 return NULL;
2453 if (ref.no_aot_trampoline)
2454 return NULL;
2455
2456 if (mono_metadata_token_index (ref.token) == 0 || mono_metadata_token_table (ref.token) != MONO_TABLE_METHOD)
2457 return NULL;
2458
2459 addr = mono_aot_get_method_from_token (domain, ref.image, ref.token, error);
2460 return addr;
2461 }
2462
2463 gboolean
2464 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
2465 {
2466 MonoAotModule *amodule = (MonoAotModule *)klass->image->aot_module;
2467 guint8 *p;
2468 gboolean err;
2469
2470 if (klass->rank || !klass->type_token || !amodule)
2471 return FALSE;
2472
2473 p = (guint8*)&amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
2474
2475 err = decode_cached_class_info (amodule, res, p, &p);
2476 if (!err)
2477 return FALSE;
2478
2479 return TRUE;
2480 }
2481
2482 /**
2483 * mono_aot_get_class_from_name:
2484 *
2485 * Obtains a MonoClass with a given namespace and a given name which is located in IMAGE,
2486 * using a cache stored in the AOT file.
2487 * Stores the resulting class in *KLASS if found, stores NULL otherwise.
2488 *
2489 * Returns: TRUE if the klass was found/not found in the cache, FALSE if no aot file was
2490 * found.
2491 */
2492 gboolean
2493 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
2494 {
2495 MonoAotModule *amodule = (MonoAotModule *)image->aot_module;
2496 guint16 *table, *entry;
2497 guint16 table_size;
2498 guint32 hash;
2499 char full_name_buf [1024];
2500 char *full_name;
2501 const char *name2, *name_space2;
2502 MonoTableInfo *t;
2503 guint32 cols [MONO_TYPEDEF_SIZE];
2504 GHashTable *nspace_table;
2505
2506 if (!amodule || !amodule->class_name_table)
2507 return FALSE;
2508
2509 amodule_lock (amodule);
2510
2511 *klass = NULL;
2512
2513 /* First look in the cache */
2514 if (!amodule->name_cache)
2515 amodule->name_cache = g_hash_table_new (g_str_hash, g_str_equal);
2516 nspace_table = (GHashTable *)g_hash_table_lookup (amodule->name_cache, name_space);
2517 if (nspace_table) {
2518 *klass = (MonoClass *)g_hash_table_lookup (nspace_table, name);
2519 if (*klass) {
2520 amodule_unlock (amodule);
2521 return TRUE;
2522 }
2523 }
2524
2525 table_size = amodule->class_name_table [0];
2526 table = amodule->class_name_table + 1;
2527
2528 if (name_space [0] == '\0')
2529 full_name = g_strdup_printf ("%s", name);
2530 else {
2531 if (strlen (name_space) + strlen (name) < 1000) {
2532 sprintf (full_name_buf, "%s.%s", name_space, name);
2533 full_name = full_name_buf;
2534 } else {
2535 full_name = g_strdup_printf ("%s.%s", name_space, name);
2536 }
2537 }
2538 hash = mono_metadata_str_hash (full_name) % table_size;
2539 if (full_name != full_name_buf)
2540 g_free (full_name);
2541
2542 entry = &table [hash * 2];
2543
2544 if (entry [0] != 0) {
2545 t = &image->tables [MONO_TABLE_TYPEDEF];
2546
2547 while (TRUE) {
2548 guint32 index = entry [0];
2549 guint32 next = entry [1];
2550 guint32 token = mono_metadata_make_token (MONO_TABLE_TYPEDEF, index);
2551
2552 name_table_accesses ++;
2553
2554 mono_metadata_decode_row (t, index - 1, cols, MONO_TYPEDEF_SIZE);
2555
2556 name2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
2557 name_space2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
2558
2559 if (!strcmp (name, name2) && !strcmp (name_space, name_space2)) {
2560 MonoError error;
2561 amodule_unlock (amodule);
2562 *klass = mono_class_get_checked (image, token, &error);
2563 if (!mono_error_ok (&error))
2564 mono_error_cleanup (&error); /* FIXME don't swallow the error */
2565
2566 /* Add to cache */
2567 if (*klass) {
2568 amodule_lock (amodule);
2569 nspace_table = (GHashTable *)g_hash_table_lookup (amodule->name_cache, name_space);
2570 if (!nspace_table) {
2571 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
2572 g_hash_table_insert (amodule->name_cache, (char*)name_space2, nspace_table);
2573 }
2574 g_hash_table_insert (nspace_table, (char*)name2, *klass);
2575 amodule_unlock (amodule);
2576 }
2577 return TRUE;
2578 }
2579
2580 if (next != 0) {
2581 entry = &table [next * 2];
2582 } else {
2583 break;
2584 }
2585 }
2586 }
2587
2588 amodule_unlock (amodule);
2589
2590 return TRUE;
2591 }
2592
2593 /* Compute the boundaries of the LLVM code for AMODULE. */
2594 static void
2595 compute_llvm_code_range (MonoAotModule *amodule, guint8 **code_start, guint8 **code_end)
2596 {
2597 guint8 *p;
2598 int version, fde_count;
2599 gint32 *table;
2600
2601 if (amodule->info.llvm_get_method) {
2602 gpointer (*get_method) (int) = (gpointer (*)(int))amodule->info.llvm_get_method;
2603
2604 *code_start = (guint8 *)get_method (-1);
2605 *code_end = (guint8 *)get_method (-2);
2606
2607 g_assert (*code_end > *code_start);
2608 return;
2609 }
2610
2611 g_assert (amodule->mono_eh_frame);
2612
2613 p = amodule->mono_eh_frame;
2614
2615 /* p points to data emitted by LLVM in DwarfException::EmitMonoEHFrame () */
2616
2617 /* Header */
2618 version = *p;
2619 g_assert (version == 3);
2620 p ++;
2621 p ++;
2622 p = (guint8 *)ALIGN_PTR_TO (p, 4);
2623
2624 fde_count = *(guint32*)p;
2625 p += 4;
2626 table = (gint32*)p;
2627
2628 if (fde_count > 0) {
2629 *code_start = (guint8 *)amodule->methods [table [0]];
2630 *code_end = (guint8*)amodule->methods [table [(fde_count - 1) * 2]] + table [fde_count * 2];
2631 } else {
2632 *code_start = NULL;
2633 *code_end = NULL;
2634 }
2635 }
2636
2637 static gboolean
2638 is_llvm_code (MonoAotModule *amodule, guint8 *code)
2639 {
2640 if ((guint8*)code >= amodule->llvm_code_start && (guint8*)code < amodule->llvm_code_end)
2641 return TRUE;
2642 else
2643 return FALSE;
2644 }
2645
2646 static gboolean
2647 is_thumb_code (MonoAotModule *amodule, guint8 *code)
2648 {
2649 if (is_llvm_code (amodule, code) && (amodule->info.flags & MONO_AOT_FILE_FLAG_LLVM_THUMB))
2650 return TRUE;
2651 else
2652 return FALSE;
2653 }
2654
2655 /*
2656 * decode_llvm_mono_eh_frame:
2657 *
2658 * Decode the EH information emitted by our modified LLVM compiler and construct a
2659 * MonoJitInfo structure from it.
2660 * If JINFO is NULL, set OUT_LLVM_CLAUSES to the number of llvm level clauses.
2661 * This function is async safe when called in async context.
2662 */
2663 static void
2664 decode_llvm_mono_eh_frame (MonoAotModule *amodule, MonoDomain *domain, MonoJitInfo *jinfo,
2665 guint8 *code, guint32 code_len,
2666 MonoJitExceptionInfo *clauses, int num_clauses,
2667 GSList **nesting,
2668 int *this_reg, int *this_offset, int *out_llvm_clauses)
2669 {
2670 guint8 *p, *code1, *code2;
2671 guint8 *fde, *cie, *code_start, *code_end;
2672 int version, fde_count;
2673 gint32 *table;
2674 int i, pos, left, right;
2675 MonoJitExceptionInfo *ei;
2676 guint32 fde_len, ei_len, nested_len, nindex;
2677 gpointer *type_info;
2678 MonoLLVMFDEInfo info;
2679 guint8 *unw_info;
2680 gboolean async;
2681
2682 async = mono_thread_info_is_async_context ();
2683
2684 if (!amodule->mono_eh_frame) {
2685 if (!jinfo) {
2686 *out_llvm_clauses = num_clauses;
2687 return;
2688 }
2689 memcpy (jinfo->clauses, clauses, num_clauses * sizeof (MonoJitExceptionInfo));
2690 return;
2691 }
2692
2693 g_assert (amodule->mono_eh_frame && code);
2694
2695 p = amodule->mono_eh_frame;
2696
2697 /* p points to data emitted by LLVM in DwarfMonoException::EmitMonoEHFrame () */
2698
2699 /* Header */
2700 version = *p;
2701 g_assert (version == 3);
2702 p ++;
2703 /* func_encoding = *p; */
2704 p ++;
2705 p = (guint8 *)ALIGN_PTR_TO (p, 4);
2706
2707 fde_count = *(guint32*)p;
2708 p += 4;
2709 table = (gint32*)p;
2710
2711 /* There is +1 entry in the table */
2712 cie = p + ((fde_count + 1) * 8);
2713
2714 /* Binary search in the table to find the entry for code */
2715 left = 0;
2716 right = fde_count;
2717 while (TRUE) {
2718 pos = (left + right) / 2;
2719
2720 /* The table contains method index/fde offset pairs */
2721 g_assert (table [(pos * 2)] != -1);
2722 code1 = (guint8 *)amodule->methods [table [(pos * 2)]];
2723 if (pos + 1 == fde_count) {
2724 code2 = amodule->llvm_code_end;
2725 } else {
2726 g_assert (table [(pos + 1) * 2] != -1);
2727 code2 = (guint8 *)amodule->methods [table [(pos + 1) * 2]];
2728 }
2729
2730 if (code < code1)
2731 right = pos;
2732 else if (code >= code2)
2733 left = pos + 1;
2734 else
2735 break;
2736 }
2737
2738 code_start = (guint8 *)amodule->methods [table [(pos * 2)]];
2739 if (pos + 1 == fde_count) {
2740 /* The +1 entry in the table contains the length of the last method */
2741 int len = table [(pos + 1) * 2];
2742 code_end = code_start + len;
2743 } else {
2744 code_end = (guint8 *)amodule->methods [table [(pos + 1) * 2]];
2745 }
2746 if (!code_len)
2747 code_len = code_end - code_start;
2748
2749 g_assert (code >= code_start && code < code_end);
2750
2751 if (is_thumb_code (amodule, code_start))
2752 /* Clear thumb flag */
2753 code_start = (guint8*)(((mgreg_t)code_start) & ~1);
2754
2755 fde = amodule->mono_eh_frame + table [(pos * 2) + 1];
2756 /* This won't overflow because there is +1 entry in the table */
2757 fde_len = table [(pos * 2) + 2 + 1] - table [(pos * 2) + 1];
2758
2759 /* Compute lengths */
2760 mono_unwind_decode_llvm_mono_fde (fde, fde_len, cie, code_start, &info, NULL, NULL, NULL);
2761
2762 if (async) {
2763 /* These are leaked, but the leak is bounded */
2764 ei = mono_domain_alloc0_lock_free (domain, info.ex_info_len * sizeof (MonoJitExceptionInfo));
2765 type_info = mono_domain_alloc0_lock_free (domain, info.ex_info_len * sizeof (gpointer));
2766 unw_info = mono_domain_alloc0_lock_free (domain, info.unw_info_len);
2767 } else {
2768 ei = (MonoJitExceptionInfo *)g_malloc0 (info.ex_info_len * sizeof (MonoJitExceptionInfo));
2769 type_info = (gpointer *)g_malloc0 (info.ex_info_len * sizeof (gpointer));
2770 unw_info = (guint8*)g_malloc0 (info.unw_info_len);
2771 }
2772 mono_unwind_decode_llvm_mono_fde (fde, fde_len, cie, code_start, &info, ei, type_info, unw_info);
2773
2774 ei_len = info.ex_info_len;
2775 *this_reg = info.this_reg;
2776 *this_offset = info.this_offset;
2777
2778 /*
2779 * LLVM might represent one IL region with multiple regions.
2780 */
2781
2782 /* Count number of nested clauses */
2783 nested_len = 0;
2784 for (i = 0; i < ei_len; ++i) {
2785 /* This might be unaligned */
2786 gint32 cindex1 = read32 (type_info [i]);
2787 GSList *l;
2788
2789 for (l = nesting [cindex1]; l; l = l->next)
2790 nested_len ++;
2791 }
2792
2793 if (!jinfo) {
2794 *out_llvm_clauses = ei_len + nested_len;
2795 return;
2796 }
2797
2798 /* Store the unwind info addr/length in the MonoJitInfo structure itself so its async safe */
2799 MonoUnwindJitInfo *jinfo_unwind = mono_jit_info_get_unwind_info (jinfo);
2800 g_assert (jinfo_unwind);
2801 jinfo_unwind->unw_info = unw_info;
2802 jinfo_unwind->unw_info_len = info.unw_info_len;
2803
2804 for (i = 0; i < ei_len; ++i) {
2805 /*
2806 * clauses contains the original IL exception info saved by the AOT
2807 * compiler, we have to combine that with the information produced by LLVM
2808 */
2809 /* The type_info entries contain IL clause indexes */
2810 int clause_index = read32 (type_info [i]);
2811 MonoJitExceptionInfo *jei = &jinfo->clauses [i];
2812 MonoJitExceptionInfo *orig_jei = &clauses [clause_index];
2813
2814 g_assert (clause_index < num_clauses);
2815 jei->flags = orig_jei->flags;
2816 jei->data.catch_class = orig_jei->data.catch_class;
2817
2818 jei->try_start = ei [i].try_start;
2819 jei->try_end = ei [i].try_end;
2820 jei->handler_start = ei [i].handler_start;
2821 jei->clause_index = clause_index;
2822
2823 if (is_thumb_code (amodule, (guint8 *)jei->try_start)) {
2824 jei->try_start = (void*)((mgreg_t)jei->try_start & ~1);
2825 jei->try_end = (void*)((mgreg_t)jei->try_end & ~1);
2826 /* Make sure we transition to thumb when a handler starts */
2827 jei->handler_start = (void*)((mgreg_t)jei->handler_start + 1);
2828 }
2829 }
2830
2831 /* See exception_cb () in mini-llvm.c as to why this is needed */
2832 nindex = ei_len;
2833 for (i = 0; i < ei_len; ++i) {
2834 gint32 cindex1 = read32 (type_info [i]);
2835 GSList *l;
2836
2837 for (l = nesting [cindex1]; l; l = l->next) {
2838 gint32 nesting_cindex = GPOINTER_TO_INT (l->data);
2839 MonoJitExceptionInfo *nesting_ei;
2840 MonoJitExceptionInfo *nesting_clause = &clauses [nesting_cindex];
2841
2842 nesting_ei = &jinfo->clauses [nindex];
2843 nindex ++;
2844
2845 memcpy (nesting_ei, &jinfo->clauses [i], sizeof (MonoJitExceptionInfo));
2846 nesting_ei->flags = nesting_clause->flags;
2847 nesting_ei->data.catch_class = nesting_clause->data.catch_class;
2848 nesting_ei->clause_index = nesting_cindex;
2849 }
2850 }
2851 g_assert (nindex == ei_len + nested_len);
2852 }
2853
2854 static gpointer
2855 alloc0_jit_info_data (MonoDomain *domain, int size, gboolean async_context)
2856 {
2857 gpointer res;
2858
2859 if (async_context) {
2860 res = mono_domain_alloc0_lock_free (domain, size);
2861 InterlockedExchangeAdd (&async_jit_info_size, size);
2862 } else {
2863 res = mono_domain_alloc0 (domain, size);
2864 }
2865 return res;
2866 }
2867
2868 /*
2869 * LOCKING: Acquires the domain lock.
2870 * In async context, this is async safe.
2871 */
2872 static MonoJitInfo*
2873 decode_exception_debug_info (MonoAotModule *amodule, MonoDomain *domain,
2874 MonoMethod *method, guint8* ex_info,
2875 guint8 *code, guint32 code_len)
2876 {
2877 MonoError error;
2878 int i, buf_len, num_clauses, len;
2879 MonoJitInfo *jinfo;
2880 MonoJitInfoFlags flags = JIT_INFO_NONE;
2881 guint unwind_info, eflags;
2882 gboolean has_generic_jit_info, has_dwarf_unwind_info, has_clauses, has_seq_points, has_try_block_holes, has_arch_eh_jit_info;
2883 gboolean from_llvm, has_gc_map;
2884 guint8 *p;
2885 int try_holes_info_size, num_holes;
2886 int this_reg = 0, this_offset = 0;
2887 gboolean async;
2888
2889 /* Load the method info from the AOT file */
2890 async = mono_thread_info_is_async_context ();
2891
2892 p = ex_info;
2893 eflags = decode_value (p, &p);
2894 has_generic_jit_info = (eflags & 1) != 0;
2895 has_dwarf_unwind_info = (eflags & 2) != 0;
2896 has_clauses = (eflags & 4) != 0;
2897 has_seq_points = (eflags & 8) != 0;
2898 from_llvm = (eflags & 16) != 0;
2899 has_try_block_holes = (eflags & 32) != 0;
2900 has_gc_map = (eflags & 64) != 0;
2901 has_arch_eh_jit_info = (eflags & 128) != 0;
2902
2903 if (has_dwarf_unwind_info) {
2904 unwind_info = decode_value (p, &p);
2905 g_assert (unwind_info < (1 << 30));
2906 } else {
2907 unwind_info = decode_value (p, &p);
2908 }
2909 if (has_generic_jit_info)
2910 flags = (MonoJitInfoFlags)(flags | JIT_INFO_HAS_GENERIC_JIT_INFO);
2911
2912 if (has_try_block_holes) {
2913 num_holes = decode_value (p, &p);
2914 flags = (MonoJitInfoFlags)(flags | JIT_INFO_HAS_TRY_BLOCK_HOLES);
2915 try_holes_info_size = sizeof (MonoTryBlockHoleTableJitInfo) + num_holes * sizeof (MonoTryBlockHoleJitInfo);
2916 } else {
2917 num_holes = try_holes_info_size = 0;
2918 }
2919
2920 if (has_arch_eh_jit_info) {
2921 flags = (MonoJitInfoFlags)(flags | JIT_INFO_HAS_ARCH_EH_INFO);
2922 /* Overwrite the original code_len which includes alignment padding */
2923 code_len = decode_value (p, &p);
2924 }
2925
2926 /* Exception table */
2927 if (has_clauses)
2928 num_clauses = decode_value (p, &p);
2929 else
2930 num_clauses = 0;
2931
2932 if (from_llvm) {
2933 MonoJitExceptionInfo *clauses;
2934 GSList **nesting;
2935
2936 /*
2937 * Part of the info is encoded by the AOT compiler, the rest is in the .eh_frame
2938 * section.
2939 */
2940 if (async) {
2941 if (num_clauses < 16) {
2942 clauses = g_newa (MonoJitExceptionInfo, num_clauses);
2943 nesting = g_newa (GSList*, num_clauses);
2944 } else {
2945 clauses = alloc0_jit_info_data (domain, sizeof (MonoJitExceptionInfo) * num_clauses, TRUE);
2946 nesting = alloc0_jit_info_data (domain, sizeof (GSList*) * num_clauses, TRUE);
2947 }
2948 memset (clauses, 0, sizeof (MonoJitExceptionInfo) * num_clauses);
2949 memset (nesting, 0, sizeof (GSList*) * num_clauses);
2950 } else {
2951 clauses = g_new0 (MonoJitExceptionInfo, num_clauses);
2952 nesting = g_new0 (GSList*, num_clauses);
2953 }
2954
2955 for (i = 0; i < num_clauses; ++i) {
2956 MonoJitExceptionInfo *ei = &clauses [i];
2957
2958 ei->flags = decode_value (p, &p);
2959
2960 if (!(ei->flags == MONO_EXCEPTION_CLAUSE_FILTER || ei->flags == MONO_EXCEPTION_CLAUSE_FINALLY)) {
2961 int len = decode_value (p, &p);
2962
2963 if (len > 0) {
2964 if (async) {
2965 p += len;
2966 } else {
2967 ei->data.catch_class = decode_klass_ref (amodule, p, &p, &error);
2968 mono_error_cleanup (&error); /* FIXME don't swallow the error */
2969 }
2970 }
2971 }
2972
2973 ei->clause_index = i;
2974
2975 ei->try_offset = decode_value (p, &p);
2976 ei->try_len = decode_value (p, &p);
2977 ei->handler_offset = decode_value (p, &p);
2978 ei->handler_len = decode_value (p, &p);
2979
2980 /* Read the list of nesting clauses */
2981 while (TRUE) {
2982 int nesting_index = decode_value (p, &p);
2983 if (nesting_index == -1)
2984 break;
2985 // FIXME: async
2986 g_assert (!async);
2987 nesting [i] = g_slist_prepend (nesting [i], GINT_TO_POINTER (nesting_index));
2988 }
2989 }
2990
2991 flags |= JIT_INFO_HAS_UNWIND_INFO;
2992
2993 int num_llvm_clauses;
2994 /* Get the length first */
2995 decode_llvm_mono_eh_frame (amodule, domain, NULL, code, code_len, clauses, num_clauses, nesting, &this_reg, &this_offset, &num_llvm_clauses);
2996 len = mono_jit_info_size (flags, num_llvm_clauses, num_holes);
2997 jinfo = (MonoJitInfo *)alloc0_jit_info_data (domain, len, async);
2998 mono_jit_info_init (jinfo, method, code, code_len, flags, num_llvm_clauses, num_holes);
2999
3000 decode_llvm_mono_eh_frame (amodule, domain, jinfo, code, code_len, clauses, num_clauses, nesting, &this_reg, &this_offset, NULL);
3001
3002 if (!async) {
3003 g_free (clauses);
3004 for (i = 0; i < num_clauses; ++i)
3005 g_slist_free (nesting [i]);
3006 g_free (nesting);
3007 }
3008 } else {
3009 len = mono_jit_info_size (flags, num_clauses, num_holes);
3010 jinfo = (MonoJitInfo *)alloc0_jit_info_data (domain, len, async);
3011 mono_jit_info_init (jinfo, method, code, code_len, flags, num_clauses, num_holes);
3012
3013 for (i = 0; i < jinfo->num_clauses; ++i) {
3014 MonoJitExceptionInfo *ei = &jinfo->clauses [i];
3015
3016 ei->flags = decode_value (p, &p);
3017
3018 #ifdef MONO_CONTEXT_SET_LLVM_EXC_REG
3019 /* Not used for catch clauses */
3020 if (ei->flags != MONO_EXCEPTION_CLAUSE_NONE)
3021 ei->exvar_offset = decode_value (p, &p);
3022 #else
3023 ei->exvar_offset = decode_value (p, &p);
3024 #endif
3025
3026 if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER || ei->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
3027 ei->data.filter = code + decode_value (p, &p);
3028 else {
3029 int len = decode_value (p, &p);
3030
3031 if (len > 0) {
3032 if (async) {
3033 p += len;
3034 } else {
3035 ei->data.catch_class = decode_klass_ref (amodule, p, &p, &error);
3036 mono_error_cleanup (&error); /* FIXME don't swallow the error */
3037 }
3038 }
3039 }
3040
3041 ei->try_start = code + decode_value (p, &p);
3042 ei->try_end = code + decode_value (p, &p);
3043 ei->handler_start = code + decode_value (p, &p);
3044 }
3045
3046 jinfo->unwind_info = unwind_info;
3047 jinfo->domain_neutral = 0;
3048 jinfo->from_aot = 1;
3049 }
3050
3051 if (has_try_block_holes) {
3052 MonoTryBlockHoleTableJitInfo *table;
3053
3054 g_assert (jinfo->has_try_block_holes);
3055
3056 table = mono_jit_info_get_try_block_hole_table_info (jinfo);
3057 g_assert (table);
3058
3059 table->num_holes = (guint16)num_holes;
3060 for (i = 0; i < num_holes; ++i) {
3061 MonoTryBlockHoleJitInfo *hole = &table->holes [i];
3062 hole->clause = decode_value (p, &p);
3063 hole->length = decode_value (p, &p);
3064 hole->offset = decode_value (p, &p);
3065 }
3066 }
3067
3068 if (has_arch_eh_jit_info) {
3069 MonoArchEHJitInfo *eh_info;
3070
3071 g_assert (jinfo->has_arch_eh_info);
3072
3073 eh_info = mono_jit_info_get_arch_eh_info (jinfo);
3074 eh_info->stack_size = decode_value (p, &p);
3075 eh_info->epilog_size = decode_value (p, &p);
3076 }
3077
3078 if (async) {
3079 /* The rest is not needed in async mode */
3080 jinfo->async = TRUE;
3081 jinfo->d.aot_info = amodule;
3082 // FIXME: Cache
3083 return jinfo;
3084 }
3085
3086 if (has_generic_jit_info) {
3087 MonoGenericJitInfo *gi;
3088 int len;
3089
3090 g_assert (jinfo->has_generic_jit_info);
3091
3092 gi = mono_jit_info_get_generic_jit_info (jinfo);
3093 g_assert (gi);
3094
3095 gi->nlocs = decode_value (p, &p);
3096 if (gi->nlocs) {
3097 gi->locations = (MonoDwarfLocListEntry *)alloc0_jit_info_data (domain, gi->nlocs * sizeof (MonoDwarfLocListEntry), async);
3098 for (i = 0; i < gi->nlocs; ++i) {
3099 MonoDwarfLocListEntry *entry = &gi->locations [i];
3100
3101 entry->is_reg = decode_value (p, &p);
3102 entry->reg = decode_value (p, &p);
3103 if (!entry->is_reg)
3104 entry->offset = decode_value (p, &p);
3105 if (i > 0)
3106 entry->from = decode_value (p, &p);
3107 entry->to = decode_value (p, &p);
3108 }
3109 gi->has_this = 1;
3110 } else {
3111 if (from_llvm) {
3112 gi->has_this = this_reg != -1;
3113 gi->this_reg = this_reg;
3114 gi->this_offset = this_offset;
3115 } else {
3116 gi->has_this = decode_value (p, &p);
3117 gi->this_reg = decode_value (p, &p);
3118 gi->this_offset = decode_value (p, &p);
3119 }
3120 }
3121
3122 len = decode_value (p, &p);
3123 if (async) {
3124 p += len;
3125 } else {
3126 jinfo->d.method = decode_resolve_method_ref (amodule, p, &p, &error);
3127 mono_error_cleanup (&error); /* FIXME don't swallow the error */
3128 }
3129
3130 gi->generic_sharing_context = alloc0_jit_info_data (domain, sizeof (MonoGenericSharingContext), async);
3131 if (decode_value (p, &p)) {
3132 /* gsharedvt */
3133 MonoGenericSharingContext *gsctx = gi->generic_sharing_context;
3134
3135 gsctx->is_gsharedvt = TRUE;
3136 }
3137 }
3138
3139 if (method && has_seq_points) {
3140 MonoSeqPointInfo *seq_points;
3141
3142 p += mono_seq_point_info_read (&seq_points, p, FALSE);
3143
3144 mono_domain_lock (domain);
3145 /* This could be set already since this function can be called more than once for the same method */
3146 if (!g_hash_table_lookup (domain_jit_info (domain)->seq_points, method))
3147 g_hash_table_insert (domain_jit_info (domain)->seq_points, method, seq_points);
3148 else
3149 mono_seq_point_info_free (seq_points);
3150 mono_domain_unlock (domain);
3151 }
3152
3153 /* Load debug info */
3154 buf_len = decode_value (p, &p);
3155 if (!async)
3156 mono_debug_add_aot_method (domain, method, code, p, buf_len);
3157 p += buf_len;
3158
3159 if (has_gc_map) {
3160 int map_size = decode_value (p, &p);
3161 /* The GC map requires 4 bytes of alignment */
3162 while ((guint64)(gsize)p % 4)
3163 p ++;
3164 jinfo->gc_info = p;
3165 p += map_size;
3166 }
3167
3168 if (amodule != jinfo->d.method->klass->image->aot_module) {
3169 mono_aot_lock ();
3170 if (!ji_to_amodule)
3171 ji_to_amodule = g_hash_table_new (NULL, NULL);
3172 g_hash_table_insert (ji_to_amodule, jinfo, amodule);
3173 mono_aot_unlock ();
3174 }
3175
3176 return jinfo;
3177 }
3178
3179 static gboolean
3180 amodule_contains_code_addr (MonoAotModule *amodule, guint8 *code)
3181 {
3182 return (code >= amodule->jit_code_start && code <= amodule->jit_code_end) ||
3183 (code >= amodule->llvm_code_start && code <= amodule->llvm_code_end);
3184 }
3185
3186 /*
3187 * mono_aot_get_unwind_info:
3188 *
3189 * Return a pointer to the DWARF unwind info belonging to JI.
3190 */
3191 guint8*
3192 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
3193 {
3194 MonoAotModule *amodule;
3195 guint8 *p;
3196 guint8 *code = (guint8 *)ji->code_start;
3197
3198 if (ji->async)
3199 amodule = (MonoAotModule *)ji->d.aot_info;
3200 else
3201 amodule = (MonoAotModule *)jinfo_get_method (ji)->klass->image->aot_module;
3202 g_assert (amodule);
3203 g_assert (ji->from_aot);
3204
3205 if (!amodule_contains_code_addr (amodule, code)) {
3206 /* ji belongs to a different aot module than amodule */
3207 mono_aot_lock ();
3208 g_assert (ji_to_amodule);
3209 amodule = (MonoAotModule *)g_hash_table_lookup (ji_to_amodule, ji);
3210 g_assert (amodule);
3211 g_assert (amodule_contains_code_addr (amodule, code));
3212 mono_aot_unlock ();
3213 }
3214
3215 p = amodule->unwind_info + ji->unwind_info;
3216 *unwind_info_len = decode_value (p, &p);
3217 return p;
3218 }
3219
3220 static void
3221 msort_method_addresses_internal (gpointer *array, int *indexes, int lo, int hi, gpointer *scratch, int *scratch_indexes)
3222 {
3223 int mid = (lo + hi) / 2;
3224 int i, t_lo, t_hi;
3225
3226 if (lo >= hi)
3227 return;
3228
3229 if (hi - lo < 32) {
3230 for (i = lo; i < hi; ++i)
3231 if (array [i] > array [i + 1])
3232 break;
3233 if (i == hi)
3234 /* Already sorted */
3235 return;
3236 }
3237
3238 msort_method_addresses_internal (array, indexes, lo, mid, scratch, scratch_indexes);
3239 msort_method_addresses_internal (array, indexes, mid + 1, hi, scratch, scratch_indexes);
3240
3241 if (array [mid] < array [mid + 1])
3242 return;
3243
3244 /* Merge */
3245 t_lo = lo;
3246 t_hi = mid + 1;
3247 for (i = lo; i <= hi; i ++) {
3248 if (t_lo <= mid && ((t_hi > hi) || array [t_lo] < array [t_hi])) {
3249 scratch [i] = array [t_lo];
3250 scratch_indexes [i] = indexes [t_lo];
3251 t_lo ++;
3252 } else {
3253 scratch [i] = array [t_hi];
3254 scratch_indexes [i] = indexes [t_hi];
3255 t_hi ++;
3256 }
3257 }
3258 for (i = lo; i <= hi; ++i) {
3259 array [i] = scratch [i];
3260 indexes [i] = scratch_indexes [i];
3261 }
3262 }
3263
3264 static void
3265 msort_method_addresses (gpointer *array, int *indexes, int len)
3266 {
3267 gpointer *scratch;
3268 int *scratch_indexes;
3269
3270 scratch = g_new (gpointer, len);
3271 scratch_indexes = g_new (int, len);
3272 msort_method_addresses_internal (array, indexes, 0, len - 1, scratch, scratch_indexes);
3273 g_free (scratch);
3274 g_free (scratch_indexes);
3275 }
3276
3277 /*
3278 * mono_aot_find_jit_info:
3279 *
3280 * In async context, the resulting MonoJitInfo will not have its method field set, and it will not be added
3281 * to the jit info tables.
3282 * FIXME: Large sizes in the lock free allocator
3283 */
3284 MonoJitInfo *
3285 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
3286 {
3287 MonoError error;
3288 int pos, left, right, code_len;
3289 int method_index, table_len;
3290 guint32 token;
3291 MonoAotModule *amodule = (MonoAotModule *)image->aot_module;
3292 MonoMethod *method = NULL;
3293 MonoJitInfo *jinfo;
3294 guint8 *code, *ex_info, *p;
3295 guint32 *table;
3296 int nmethods;
3297 gpointer *methods;
3298 guint8 *code1, *code2;
3299 int methods_len, i;
3300 gboolean async;
3301
3302 if (!amodule)
3303 return NULL;
3304
3305 nmethods = amodule->info.nmethods;
3306
3307 if (domain != mono_get_root_domain ())
3308 /* FIXME: */
3309 return NULL;
3310
3311 if (!amodule_contains_code_addr (amodule, (guint8 *)addr))
3312 return NULL;
3313
3314 async = mono_thread_info_is_async_context ();
3315
3316 /* Compute a sorted table mapping code to method indexes. */
3317 if (!amodule->sorted_methods) {
3318 // FIXME: async
3319 gpointer *methods = g_new0 (gpointer, nmethods);
3320 int *method_indexes = g_new0 (int, nmethods);
3321 int methods_len = 0;
3322
3323 for (i = 0; i < nmethods; ++i) {
3324 /* Skip the -1 entries to speed up sorting */
3325 if (amodule->methods [i] == GINT_TO_POINTER (-1))
3326 continue;
3327 methods [methods_len] = amodule->methods [i];
3328 method_indexes [methods_len] = i;
3329 methods_len ++;
3330 }
3331 /* Use a merge sort as this is mostly sorted */
3332 msort_method_addresses (methods, method_indexes, methods_len);
3333 for (i = 0; i < methods_len -1; ++i)
3334 g_assert (methods [i] <= methods [i + 1]);
3335 amodule->sorted_methods_len = methods_len;
3336 if (InterlockedCompareExchangePointer ((gpointer*)&amodule->sorted_methods, methods, NULL) != NULL)
3337 /* Somebody got in before us */
3338 g_free (methods);
3339 if (InterlockedCompareExchangePointer ((gpointer*)&amodule->sorted_method_indexes, method_indexes, NULL) != NULL)
3340 /* Somebody got in before us */
3341 g_free (method_indexes);
3342 }
3343
3344 /* Binary search in the sorted_methods table */
3345 methods = amodule->sorted_methods;
3346 methods_len = amodule->sorted_methods_len;
3347 code = (guint8 *)addr;
3348 left = 0;
3349 right = methods_len;
3350 while (TRUE) {
3351 pos = (left + right) / 2;
3352
3353 code1 = (guint8 *)methods [pos];
3354 if (pos + 1 == methods_len) {
3355 if (code1 >= amodule->jit_code_start && code1 < amodule->jit_code_end)
3356 code2 = amodule->jit_code_end;
3357 else
3358 code2 = amodule->llvm_code_end;
3359 } else {
3360 code2 = (guint8 *)methods [pos + 1];
3361 }
3362
3363 if (code < code1)
3364 right = pos;
3365 else if (code >= code2)
3366 left = pos + 1;
3367 else
3368 break;
3369 }
3370
3371 g_assert (addr >= methods [pos]);
3372 if (pos + 1 < methods_len)
3373 g_assert (addr < methods [pos + 1]);
3374 method_index = amodule->sorted_method_indexes [pos];
3375
3376 /* In async mode, jinfo is not added to the normal jit info table, so have to cache it ourselves */
3377 if (async) {
3378 JitInfoMap *table = amodule->async_jit_info_table;
3379 int len;
3380
3381 if (table) {
3382 len = table [0].method_index;
3383 for (i = 1; i < len; ++i) {
3384 if (table [i].method_index == method_index)
3385 return table [i].jinfo;
3386 }
3387 }
3388 }
3389
3390 code = (guint8 *)amodule->methods [method_index];
3391 ex_info = &amodule->blob [mono_aot_get_offset (amodule->ex_info_offsets, method_index)];
3392
3393 if (pos == methods_len - 1) {
3394 if (code >= amodule->jit_code_start && code < amodule->jit_code_end)
3395 code_len = amodule->jit_code_end - code;
3396 else
3397 code_len = amodule->llvm_code_end - code;
3398 } else {
3399 code_len = (guint8*)methods [pos + 1] - (guint8*)methods [pos];
3400 }
3401
3402 g_assert ((guint8*)code <= (guint8*)addr && (guint8*)addr < (guint8*)code + code_len);
3403
3404 /* Might be a wrapper/extra method */
3405 if (!async) {
3406 if (amodule->extra_methods) {
3407 amodule_lock (amodule);
3408 method = (MonoMethod *)g_hash_table_lookup (amodule->extra_methods, GUINT_TO_POINTER (method_index));
3409 amodule_unlock (amodule);
3410 } else {
3411 method = NULL;
3412 }
3413
3414 if (!method) {
3415 if (method_index >= image->tables [MONO_TABLE_METHOD].rows) {
3416 /*
3417 * This is hit for extra methods which are called directly, so they are
3418 * not in amodule->extra_methods.
3419 */
3420 table_len = amodule->extra_method_info_offsets [0];
3421 table = amodule->extra_method_info_offsets + 1;
3422 left = 0;
3423 right = table_len;
3424 pos = 0;
3425
3426 /* Binary search */
3427 while (TRUE) {
3428 pos = ((left + right) / 2);
3429
3430 g_assert (pos < table_len);
3431
3432 if (table [pos * 2] < method_index)
3433 left = pos + 1;
3434 else if (table [pos * 2] > method_index)
3435 right = pos;
3436 else
3437 break;
3438 }
3439
3440 p = amodule->blob + table [(pos * 2) + 1];
3441 method = decode_resolve_method_ref (amodule, p, &p, &error);
3442 mono_error_cleanup (&error); /* FIXME don't swallow the error */
3443 if (!method)
3444 /* Happens when a random address is passed in which matches a not-yey called wrapper encoded using its name */
3445 return NULL;
3446 } else {
3447 MonoError error;
3448 token = mono_metadata_make_token (MONO_TABLE_METHOD, method_index + 1);
3449 method = mono_get_method_checked (image, token, NULL, NULL, &error);
3450 if (!method)
3451 g_error ("AOT runtime could not load method due to %s", mono_error_get_message (&error)); /* FIXME don't swallow the error */
3452 }
3453 }
3454 /* FIXME: */
3455 g_assert (method);
3456 }
3457
3458 //printf ("F: %s\n", mono_method_full_name (method, TRUE));
3459
3460 jinfo = decode_exception_debug_info (amodule, domain, method, ex_info, code, code_len);
3461
3462 g_assert ((guint8*)addr >= (guint8*)jinfo->code_start);
3463
3464 /* Add it to the normal JitInfo tables */
3465 if (async) {
3466 JitInfoMap *old_table, *new_table;
3467 int len;
3468
3469 /*
3470 * Use a simple inmutable table with linear search to cache async jit info entries.
3471 * This assumes that the number of entries is small.
3472 */
3473 while (TRUE) {
3474 /* Copy the table, adding a new entry at the end */
3475 old_table = amodule->async_jit_info_table;
3476 if (old_table)
3477 len = old_table[0].method_index;
3478 else
3479 len = 1;
3480 new_table = (JitInfoMap *)alloc0_jit_info_data (domain, (len + 1) * sizeof (JitInfoMap), async);
3481 if (old_table)
3482 memcpy (new_table, old_table, len * sizeof (JitInfoMap));
3483 new_table [0].method_index = len + 1;
3484 new_table [len].method_index = method_index;
3485 new_table [len].jinfo = jinfo;
3486 /* Publish it */
3487 mono_memory_barrier ();
3488 if (InterlockedCompareExchangePointer ((volatile gpointer *)&amodule->async_jit_info_table, new_table, old_table) == old_table)
3489 break;
3490 }
3491 } else {
3492 mono_jit_info_table_add (domain, jinfo);
3493 }
3494
3495 if ((guint8*)addr >= (guint8*)jinfo->code_start + jinfo->code_size)
3496 /* addr is in the padding between methods, see the adjustment of code_size in decode_exception_debug_info () */
3497 return NULL;
3498
3499 return jinfo;
3500 }
3501
3502 static gboolean
3503 decode_patch (MonoAotModule *aot_module, MonoMemPool *mp, MonoJumpInfo *ji, guint8 *buf, guint8 **endbuf)
3504 {
3505 MonoError error;
3506 guint8 *p = buf;
3507 gpointer *table;
3508 MonoImage *image;
3509 int i;
3510
3511 switch (ji->type) {
3512 case MONO_PATCH_INFO_METHOD:
3513 case MONO_PATCH_INFO_METHOD_JUMP:
3514 case MONO_PATCH_INFO_ICALL_ADDR:
3515 case MONO_PATCH_INFO_ICALL_ADDR_CALL:
3516 case MONO_PATCH_INFO_METHOD_RGCTX:
3517 case MONO_PATCH_INFO_METHOD_CODE_SLOT: {
3518 MethodRef ref;
3519 gboolean res;
3520
3521 res = decode_method_ref (aot_module, &ref, p, &p, &error);
3522 mono_error_assert_ok (&error); /* FIXME don't swallow the error */
3523 if (!res)
3524 goto cleanup;
3525
3526 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)) {
3527 ji->data.target = mono_create_ftnptr (mono_domain_get (), mono_create_jit_trampoline_from_token (ref.image, ref.token));
3528 ji->type = MONO_PATCH_INFO_ABS;
3529 }
3530 else {
3531 if (ref.method) {
3532 ji->data.method = ref.method;
3533 }else {
3534 MonoError error;
3535 ji->data.method = mono_get_method_checked (ref.image, ref.token, NULL, NULL, &error);
3536 if (!ji->data.method)
3537 g_error ("AOT Runtime could not load method due to %s", mono_error_get_message (&error)); /* FIXME don't swallow the error */
3538 }
3539 g_assert (ji->data.method);
3540 mono_class_init (ji->data.method->klass);
3541 }
3542 break;
3543 }
3544 case MONO_PATCH_INFO_INTERNAL_METHOD:
3545 case MONO_PATCH_INFO_JIT_ICALL_ADDR:
3546 case MONO_PATCH_INFO_JIT_ICALL_ADDR_NOCALL: {
3547 guint32 len = decode_value (p, &p);
3548
3549 ji->data.name = (char*)p;
3550 p += len + 1;
3551 break;
3552 }
3553 case MONO_PATCH_INFO_METHODCONST:
3554 /* Shared */
3555 ji->data.method = decode_resolve_method_ref (aot_module, p, &p, &error);
3556 mono_error_cleanup (&error); /* FIXME don't swallow the error */
3557 if (!ji->data.method)
3558 goto cleanup;
3559 break;
3560 case MONO_PATCH_INFO_VTABLE:
3561 case MONO_PATCH_INFO_CLASS:
3562 case MONO_PATCH_INFO_IID:
3563 case MONO_PATCH_INFO_ADJUSTED_IID:
3564 /* Shared */
3565 ji->data.klass = decode_klass_ref (aot_module, p, &p, &error);
3566 mono_error_cleanup (&error); /* FIXME don't swallow the error */
3567 if (!ji->data.klass)
3568 goto cleanup;
3569 break;
3570 case MONO_PATCH_INFO_DELEGATE_TRAMPOLINE:
3571 ji->data.del_tramp = (MonoDelegateClassMethodPair *)mono_mempool_alloc0 (mp, sizeof (MonoDelegateClassMethodPair));
3572 ji->data.del_tramp->klass = decode_klass_ref (aot_module, p, &p, &error);
3573 mono_error_cleanup (&error); /* FIXME don't swallow the error */
3574 if (!ji->data.del_tramp->klass)
3575 goto cleanup;
3576 if (decode_value (p, &p)) {
3577 ji->data.del_tramp->method = decode_resolve_method_ref (aot_module, p, &p, &error);
3578 mono_error_cleanup (&error); /* FIXME don't swallow the error */
3579 if (!ji->data.del_tramp->method)
3580 goto cleanup;
3581 }
3582 ji->data.del_tramp->is_virtual = decode_value (p, &p) ? TRUE : FALSE;
3583 break;
3584 case MONO_PATCH_INFO_IMAGE:
3585 ji->data.image = load_image (aot_module, decode_value (p, &p), &error);
3586 mono_error_cleanup (&error); /* FIXME don't swallow the error */
3587 if (!ji->data.image)
3588 goto cleanup;
3589 break;
3590 case MONO_PATCH_INFO_FIELD:
3591 case MONO_PATCH_INFO_SFLDA:
3592 /* Shared */
3593 ji->data.field = decode_field_info (aot_module, p, &p);
3594 if (!ji->data.field)
3595 goto cleanup;
3596 break;
3597 case MONO_PATCH_INFO_SWITCH:
3598 ji->data.table = (MonoJumpInfoBBTable *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoBBTable));
3599 ji->data.table->table_size = decode_value (p, &p);
3600 table = (void **)mono_domain_alloc (mono_domain_get (), sizeof (gpointer) * ji->data.table->table_size);
3601 ji->data.table->table = (MonoBasicBlock**)table;
3602 for (i = 0; i < ji->data.table->table_size; i++)
3603 table [i] = (gpointer)(gssize)decode_value (p, &p);
3604 break;
3605 case MONO_PATCH_INFO_R4: {
3606 guint32 val;
3607
3608 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (float));
3609 val = decode_value (p, &p);
3610 *(float*)ji->data.target = *(float*)&val;
3611 break;
3612 }
3613 case MONO_PATCH_INFO_R8: {
3614 guint32 val [2];
3615 guint64 v;
3616
3617 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (double));
3618
3619 val [0] = decode_value (p, &p);
3620 val [1] = decode_value (p, &p);
3621 v = ((guint64)val [1] << 32) | ((guint64)val [0]);
3622 *(double*)ji->data.target = *(double*)&v;
3623 break;
3624 }
3625 case MONO_PATCH_INFO_LDSTR:
3626 image = load_image (aot_module, decode_value (p, &p), &error);
3627 mono_error_cleanup (&error); /* FIXME don't swallow the error */
3628 if (!image)
3629 goto cleanup;
3630 ji->data.token = mono_jump_info_token_new (mp, image, MONO_TOKEN_STRING + decode_value (p, &p));
3631 break;
3632 case MONO_PATCH_INFO_RVA:
3633 case MONO_PATCH_INFO_DECLSEC:
3634 case MONO_PATCH_INFO_LDTOKEN:
3635 case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
3636 /* Shared */
3637 image = load_image (aot_module, decode_value (p, &p), &error);
3638 mono_error_cleanup (&error); /* FIXME don't swallow the error */
3639 if (!image)
3640 goto cleanup;
3641 ji->data.token = mono_jump_info_token_new (mp, image, decode_value (p, &p));
3642
3643 ji->data.token->has_context = decode_value (p, &p);
3644 if (ji->data.token->has_context) {
3645 gboolean res = decode_generic_context (aot_module, &ji->data.token->context, p, &p, &error);
3646 mono_error_cleanup (&error); /* FIXME don't swallow the error */
3647 if (!res)
3648 goto cleanup;
3649 }
3650 break;
3651 case MONO_PATCH_INFO_EXC_NAME:
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 ji->data.name = ji->data.klass->name;
3657 break;
3658 case MONO_PATCH_INFO_METHOD_REL:
3659 ji->data.offset = decode_value (p, &p);
3660 break;
3661 case MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG:
3662 case MONO_PATCH_INFO_GC_CARD_TABLE_ADDR:
3663 case MONO_PATCH_INFO_GC_NURSERY_START:
3664 case MONO_PATCH_INFO_GC_NURSERY_BITS:
3665 case MONO_PATCH_INFO_PROFILER_ALLOCATION_COUNT:
3666 break;
3667 case MONO_PATCH_INFO_CASTCLASS_CACHE:
3668 ji->data.index = decode_value (p, &p);
3669 break;
3670 case MONO_PATCH_INFO_RGCTX_FETCH:
3671 case MONO_PATCH_INFO_RGCTX_SLOT_INDEX: {
3672 gboolean res;
3673 MonoJumpInfoRgctxEntry *entry;
3674 guint32 offset, val;
3675 guint8 *p2;
3676
3677 offset = decode_value (p, &p);
3678 val = decode_value (p, &p);
3679
3680 entry = (MonoJumpInfoRgctxEntry *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
3681 p2 = aot_module->blob + offset;
3682 entry->method = decode_resolve_method_ref (aot_module, p2, &p2, &error);
3683 entry->in_mrgctx = ((val & 1) > 0) ? TRUE : FALSE;
3684 entry->info_type = (MonoRgctxInfoType)((val >> 1) & 0xff);
3685 entry->data = (MonoJumpInfo *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
3686 entry->data->type = (MonoJumpInfoType)((val >> 9) & 0xff);
3687 mono_error_cleanup (&error); /* FIXME don't swallow the error */
3688
3689 res = decode_patch (aot_module, mp, entry->data, p, &p);
3690 if (!res)
3691 goto cleanup;
3692 ji->data.rgctx_entry = entry;
3693 break;
3694 }
3695 case MONO_PATCH_INFO_SEQ_POINT_INFO:
3696 case MONO_PATCH_INFO_AOT_MODULE:
3697 case MONO_PATCH_INFO_MSCORLIB_GOT_ADDR:
3698 break;
3699 case MONO_PATCH_INFO_SIGNATURE:
3700 case MONO_PATCH_INFO_GSHAREDVT_IN_WRAPPER:
3701 ji->data.target = decode_signature (aot_module, p, &p);
3702 break;
3703 case MONO_PATCH_INFO_GSHAREDVT_CALL: {
3704 MonoJumpInfoGSharedVtCall *info = (MonoJumpInfoGSharedVtCall *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoGSharedVtCall));
3705 info->sig = decode_signature (aot_module, p, &p);
3706 g_assert (info->sig);
3707 info->method = decode_resolve_method_ref (aot_module, p, &p, &error);
3708 mono_error_assert_ok (&error); /* FIXME don't swallow the error */
3709
3710 ji->data.target = info;
3711 break;
3712 }
3713 case MONO_PATCH_INFO_GSHAREDVT_METHOD: {
3714 MonoGSharedVtMethodInfo *info = (MonoGSharedVtMethodInfo *)mono_mempool_alloc0 (mp, sizeof (MonoGSharedVtMethodInfo));
3715 int i;
3716
3717 info->method = decode_resolve_method_ref (aot_module, p, &p, &error);
3718 mono_error_assert_ok (&error); /* FIXME don't swallow the error */
3719
3720 info->num_entries = decode_value (p, &p);
3721 info->count_entries = info->num_entries;
3722 info->entries = (MonoRuntimeGenericContextInfoTemplate *)mono_mempool_alloc0 (mp, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->num_entries);
3723 for (i = 0; i < info->num_entries; ++i) {
3724 MonoRuntimeGenericContextInfoTemplate *template_ = &info->entries [i];
3725
3726 template_->info_type = (MonoRgctxInfoType)decode_value (p, &p);
3727 switch (mini_rgctx_info_type_to_patch_info_type (template_->info_type)) {
3728 case MONO_PATCH_INFO_CLASS: {
3729 MonoClass *klass = decode_klass_ref (aot_module, p, &p, &error);
3730 mono_error_cleanup (&error); /* FIXME don't swallow the error */
3731 if (!klass)
3732 goto cleanup;
3733 template_->data = &klass->byval_arg;
3734 break;
3735 }
3736 case MONO_PATCH_INFO_FIELD:
3737 template_->data = decode_field_info (aot_module, p, &p);
3738 if (!template_->data)
3739 goto cleanup;
3740 break;
3741 default:
3742 g_assert_not_reached ();
3743 break;
3744 }
3745 }
3746 ji->data.target = info;
3747 break;
3748 }
3749 case MONO_PATCH_INFO_LDSTR_LIT: {
3750 int len = decode_value (p, &p);
3751 char *s;
3752
3753 s = (char *)mono_mempool_alloc0 (mp, len + 1);
3754 memcpy (s, p, len + 1);
3755 p += len + 1;
3756
3757 ji->data.target = s;
3758 break;
3759 }
3760 case MONO_PATCH_INFO_VIRT_METHOD: {
3761 MonoJumpInfoVirtMethod *info = (MonoJumpInfoVirtMethod *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoVirtMethod));
3762
3763 info->klass = decode_klass_ref (aot_module, p, &p, &error);
3764 mono_error_assert_ok (&error); /* FIXME don't swallow the error */
3765
3766 info->method = decode_resolve_method_ref (aot_module, p, &p, &error);
3767 mono_error_assert_ok (&error); /* FIXME don't swallow the error */
3768
3769 ji->data.target = info;
3770 break;
3771 }
3772 case MONO_PATCH_INFO_GC_SAFE_POINT_FLAG:
3773 case MONO_PATCH_INFO_JIT_THREAD_ATTACH:
3774 break;
3775 case MONO_PATCH_INFO_GET_TLS_TRAMP:
3776 case MONO_PATCH_INFO_SET_TLS_TRAMP:
3777 case MONO_PATCH_INFO_AOT_JIT_INFO:
3778 ji->data.index = decode_value (p, &p);
3779 break;
3780 default:
3781 g_warning ("unhandled type %d", ji->type);
3782 g_assert_not_reached ();
3783 }
3784
3785 *endbuf = p;
3786
3787 return TRUE;
3788
3789 cleanup:
3790 return FALSE;
3791 }
3792
3793 /*
3794 * decode_patches:
3795 *
3796 * Decode a list of patches identified by the got offsets in GOT_OFFSETS. Return an array of
3797 * MonoJumpInfo structures allocated from MP.
3798 */
3799 static MonoJumpInfo*
3800 decode_patches (MonoAotModule *amodule, MonoMemPool *mp, int n_patches, gboolean llvm, guint32 *got_offsets)
3801 {
3802 MonoJumpInfo *patches;
3803 MonoJumpInfo *ji;
3804 gpointer *got;
3805 guint32 *got_info_offsets;
3806 int i;
3807 gboolean res;
3808
3809 if (llvm) {
3810 got = amodule->llvm_got;
3811 got_info_offsets = (guint32 *)amodule->llvm_got_info_offsets;
3812 } else {
3813 got = amodule->got;
3814 got_info_offsets = (guint32 *)amodule->got_info_offsets;
3815 }
3816
3817 patches = (MonoJumpInfo *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo) * n_patches);
3818 for (i = 0; i < n_patches; ++i) {
3819 guint8 *p = amodule->blob + mono_aot_get_offset (got_info_offsets, got_offsets [i]);
3820
3821 ji = &patches [i];
3822 ji->type = (MonoJumpInfoType)decode_value (p, &p);
3823
3824 /* See load_method () for SFLDA */
3825 if (got && got [got_offsets [i]] && ji->type != MONO_PATCH_INFO_SFLDA) {
3826 /* Already loaded */
3827 } else {
3828 res = decode_patch (amodule, mp, ji, p, &p);
3829 if (!res)
3830 return NULL;
3831 }
3832 }
3833
3834 return patches;
3835 }
3836
3837 static MonoJumpInfo*
3838 load_patch_info (MonoAotModule *amodule, MonoMemPool *mp, int n_patches,
3839 gboolean llvm, guint32 **got_slots,
3840 guint8 *buf, guint8 **endbuf)
3841 {
3842 MonoJumpInfo *patches;
3843 int pindex;
3844 guint8 *p;
3845
3846 p = buf;
3847
3848 *got_slots = (guint32 *)g_malloc (sizeof (guint32) * n_patches);
3849 for (pindex = 0; pindex < n_patches; ++pindex) {
3850 (*got_slots)[pindex] = decode_value (p, &p);
3851 }
3852
3853 patches = decode_patches (amodule, mp, n_patches, llvm, *got_slots);
3854 if (!patches) {
3855 g_free (*got_slots);
3856 *got_slots = NULL;
3857 return NULL;
3858 }
3859
3860 *endbuf = p;
3861 return patches;
3862 }
3863
3864 static void
3865 register_jump_target_got_slot (MonoDomain *domain, MonoMethod *method, gpointer *got_slot)
3866 {
3867 /*
3868 * Jump addresses cannot be patched by the trampoline code since it
3869 * does not have access to the caller's address. Instead, we collect
3870 * the addresses of the GOT slots pointing to a method, and patch
3871 * them after the method has been compiled.
3872 */
3873 MonoJitDomainInfo *info = domain_jit_info (domain);
3874 GSList *list;
3875
3876 mono_domain_lock (domain);
3877 if (!info->jump_target_got_slot_hash)
3878 info->jump_target_got_slot_hash = g_hash_table_new (NULL, NULL);
3879 list = (GSList *)g_hash_table_lookup (info->jump_target_got_slot_hash, method);
3880 list = g_slist_prepend (list, got_slot);
3881 g_hash_table_insert (info->jump_target_got_slot_hash, method, list);
3882 mono_domain_unlock (domain);
3883 }
3884
3885 /*
3886 * load_method:
3887 *
3888 * Load the method identified by METHOD_INDEX from the AOT image. Return a
3889 * pointer to the native code of the method, or NULL if not found.
3890 * METHOD might not be set if the caller only has the image/token info.
3891 */
3892 static gpointer
3893 load_method (MonoDomain *domain, MonoAotModule *amodule, MonoImage *image, MonoMethod *method, guint32 token, int method_index,
3894 MonoError *error)
3895 {
3896 MonoJitInfo *jinfo = NULL;
3897 guint8 *code = NULL, *info;
3898 gboolean res;
3899
3900 error_init (error);
3901
3902 init_amodule_got (amodule);
3903
3904 if (domain != mono_get_root_domain ())
3905 /* Non shared AOT code can't be used in other appdomains */
3906 return NULL;
3907
3908 if (amodule->out_of_date)
3909 return NULL;
3910
3911 if (amodule->info.llvm_get_method) {
3912 /*
3913 * Obtain the method address by calling a generated function in the LLVM module.
3914 */
3915 gpointer (*get_method) (int) = (gpointer (*)(int))amodule->info.llvm_get_method;
3916 code = (guint8 *)get_method (method_index);
3917 }
3918
3919 if (!code) {
3920 /* JITted method */
3921 if (amodule->methods [method_index] == GINT_TO_POINTER (-1)) {
3922 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
3923 char *full_name;
3924
3925 if (!method) {
3926 method = mono_get_method_checked (image, token, NULL, NULL, error);
3927 if (!method)
3928 return NULL;
3929 }
3930 if (!(method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL)) {
3931 full_name = mono_method_full_name (method, TRUE);
3932 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT: NOT FOUND: %s.", full_name);
3933 g_free (full_name);
3934 }
3935 }
3936 return NULL;
3937 }
3938 code = (guint8 *)amodule->methods [method_index];
3939 }
3940
3941 info = &amodule->blob [mono_aot_get_offset (amodule->method_info_offsets, method_index)];
3942
3943 if (!amodule->methods_loaded) {
3944 amodule_lock (amodule);
3945 if (!amodule->methods_loaded) {
3946 guint32 *loaded;
3947
3948 loaded = g_new0 (guint32, amodule->info.nmethods / 32 + 1);
3949 mono_memory_barrier ();
3950 amodule->methods_loaded = loaded;
3951 }
3952 amodule_unlock (amodule);
3953 }
3954
3955 if ((amodule->methods_loaded [method_index / 32] >> (method_index % 32)) & 0x1)
3956 return code;
3957
3958 if (mono_last_aot_method != -1) {
3959 if (mono_jit_stats.methods_aot >= mono_last_aot_method)
3960 return NULL;
3961 else if (mono_jit_stats.methods_aot == mono_last_aot_method - 1) {
3962 if (!method) {
3963 method = mono_get_method_checked (image, token, NULL, NULL, error);
3964 if (!method)
3965 return NULL;
3966 }
3967 if (method) {
3968 char *name = mono_method_full_name (method, TRUE);
3969 g_print ("LAST AOT METHOD: %s.\n", name);
3970 g_free (name);
3971 } else {
3972 g_print ("LAST AOT METHOD: %p %d\n", code, method_index);
3973 }
3974 }
3975 }
3976
3977 if (!(is_llvm_code (amodule, code) && (amodule->info.flags & MONO_AOT_FILE_FLAG_LLVM_ONLY)) ||
3978 (mono_llvm_only && method && method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED)) {
3979 res = init_method (amodule, method_index, method, NULL, NULL, error);
3980 if (!res)
3981 goto cleanup;
3982 }
3983
3984 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
3985 char *full_name;
3986
3987 if (!method) {
3988 method = mono_get_method_checked (image, token, NULL, NULL, error);
3989 if (!method)
3990 return NULL;
3991 }
3992
3993 full_name = mono_method_full_name (method, TRUE);
3994
3995 if (!jinfo)
3996 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
3997
3998 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT: FOUND method %s [%p - %p %p]", full_name, code, code + jinfo->code_size, info);
3999 g_free (full_name);
4000 }
4001
4002 amodule_lock (amodule);
4003
4004 init_plt (amodule);
4005
4006 InterlockedIncrement (&mono_jit_stats.methods_aot);
4007
4008 if (method && method->wrapper_type)
4009 g_hash_table_insert (amodule->method_to_code, method, code);
4010
4011 /* Commit changes since methods_loaded is accessed outside the lock */
4012 mono_memory_barrier ();
4013
4014 amodule->methods_loaded [method_index / 32] |= 1 << (method_index % 32);
4015
4016 amodule_unlock (amodule);
4017
4018 if (MONO_PROFILER_ENABLED (jit_begin) || MONO_PROFILER_ENABLED (jit_done)) {
4019 MonoJitInfo *jinfo;
4020
4021 if (!method) {
4022 method = mono_get_method_checked (amodule->assembly->image, token, NULL, NULL, error);
4023 if (!method)
4024 return NULL;
4025 }
4026 MONO_PROFILER_RAISE (jit_begin, (method));
4027 jinfo = mono_jit_info_table_find (domain, (char*)code);
4028 g_assert (jinfo);
4029 MONO_PROFILER_RAISE (jit_done, (method, jinfo));
4030 }
4031
4032 return code;
4033
4034 cleanup:
4035 if (jinfo)
4036 g_free (jinfo);
4037
4038 return NULL;
4039 }
4040
4041 static guint32
4042 find_aot_method_in_amodule (MonoAotModule *amodule, MonoMethod *method, guint32 hash_full)
4043 {
4044 MonoError error;
4045 guint32 table_size, entry_size, hash;
4046 guint32 *table, *entry;
4047 guint32 index;
4048 static guint32 n_extra_decodes;
4049
4050 if (!amodule || amodule->out_of_date)
4051 return 0xffffff;
4052
4053 table_size = amodule->extra_method_table [0];
4054 hash = hash_full % table_size;
4055 table = amodule->extra_method_table + 1;
4056 entry_size = 3;
4057
4058 entry = &table [hash * entry_size];
4059
4060 if (entry [0] == 0)
4061 return 0xffffff;
4062
4063 index = 0xffffff;
4064 while (TRUE) {
4065 guint32 key = entry [0];
4066 guint32 value = entry [1];
4067 guint32 next = entry [entry_size - 1];
4068 MonoMethod *m;
4069 guint8 *p, *orig_p;
4070
4071 p = amodule->blob + key;
4072 orig_p = p;
4073
4074 amodule_lock (amodule);
4075 if (!amodule->method_ref_to_method)
4076 amodule->method_ref_to_method = g_hash_table_new (NULL, NULL);
4077 m = (MonoMethod *)g_hash_table_lookup (amodule->method_ref_to_method, p);
4078 amodule_unlock (amodule);
4079 if (!m) {
4080 m = decode_resolve_method_ref_with_target (amodule, method, p, &p, &error);
4081 mono_error_cleanup (&error); /* FIXME don't swallow the error */
4082 /*
4083 * Can't catche runtime invoke wrappers since it would break
4084 * the check in decode_method_ref_with_target ().
4085 */
4086 if (m && m->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE) {
4087 amodule_lock (amodule);
4088 g_hash_table_insert (amodule->method_ref_to_method, orig_p, m);
4089 amodule_unlock (amodule);
4090 }
4091 }
4092 if (m == method) {
4093 index = value;
4094 break;
4095 }
4096
4097 /* Methods decoded needlessly */
4098 if (m) {
4099 //printf ("%d %s %s %p\n", n_extra_decodes, mono_method_full_name (method, TRUE), mono_method_full_name (m, TRUE), orig_p);
4100 n_extra_decodes ++;
4101 }
4102
4103 if (next != 0)
4104 entry = &table [next * entry_size];
4105 else
4106 break;
4107 }
4108
4109 return index;
4110 }
4111
4112 static void
4113 add_module_cb (gpointer key, gpointer value, gpointer user_data)
4114 {
4115 g_ptr_array_add ((GPtrArray*)user_data, value);
4116 }
4117
4118 /*
4119 * find_aot_method:
4120 *
4121 * Try finding METHOD in the extra_method table in all AOT images.
4122 * Return its method index, or 0xffffff if not found. Set OUT_AMODULE to the AOT
4123 * module where the method was found.
4124 */
4125 static guint32
4126 find_aot_method (MonoMethod *method, MonoAotModule **out_amodule)
4127 {
4128 guint32 index;
4129 GPtrArray *modules;
4130 int i;
4131 guint32 hash = mono_aot_method_hash (method);
4132
4133 /* Try the method's module first */
4134 *out_amodule = (MonoAotModule *)method->klass->image->aot_module;
4135 index = find_aot_method_in_amodule ((MonoAotModule *)method->klass->image->aot_module, method, hash);
4136 if (index != 0xffffff)
4137 return index;
4138
4139 /*
4140 * Try all other modules.
4141 * This is needed because generic instances klass->image points to the image
4142 * containing the generic definition, but the native code is generated to the
4143 * AOT image which contains the reference.
4144 */
4145
4146 /* Make a copy to avoid doing the search inside the aot lock */
4147 modules = g_ptr_array_new ();
4148 mono_aot_lock ();
4149 g_hash_table_foreach (aot_modules, add_module_cb, modules);
4150 mono_aot_unlock ();
4151
4152 index = 0xffffff;
4153 for (i = 0; i < modules->len; ++i) {
4154 MonoAotModule *amodule = (MonoAotModule *)g_ptr_array_index (modules, i);
4155
4156 if (amodule != method->klass->image->aot_module)
4157 index = find_aot_method_in_amodule (amodule, method, hash);
4158 if (index != 0xffffff) {
4159 *out_amodule = amodule;
4160 break;
4161 }
4162 }
4163
4164 g_ptr_array_free (modules, TRUE);
4165
4166 return index;
4167 }
4168
4169 guint32
4170 mono_aot_find_method_index (MonoMethod *method)
4171 {
4172 MonoAotModule *out_amodule;
4173 return find_aot_method (method, &out_amodule);
4174 }
4175
4176 static gboolean
4177 init_method (MonoAotModule *amodule, guint32 method_index, MonoMethod *method, MonoClass *init_class, MonoGenericContext *context, MonoError *error)
4178 {
4179 MonoDomain *domain = mono_domain_get ();
4180 MonoMemPool *mp;
4181 MonoClass *klass_to_run_ctor = NULL;
4182 gboolean from_plt = method == NULL;
4183 int pindex, n_patches;
4184 guint8 *p;
4185 MonoJitInfo *jinfo = NULL;
4186 guint8 *code, *info;
4187
4188 error_init (error);
4189
4190 code = (guint8 *)amodule->methods [method_index];
4191 info = &amodule->blob [mono_aot_get_offset (amodule->method_info_offsets, method_index)];
4192
4193 p = info;
4194
4195 //does the method's class has a cctor?
4196 if (decode_value (p, &p) == 1)
4197 klass_to_run_ctor = decode_klass_ref (amodule, p, &p, error);
4198 if (!is_ok (error))
4199 return FALSE;
4200
4201 //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
4202 if (method)
4203 klass_to_run_ctor = method->klass;
4204
4205 n_patches = decode_value (p, &p);
4206
4207 if (n_patches) {
4208 MonoJumpInfo *patches;
4209 guint32 *got_slots;
4210 gboolean llvm;
4211 gpointer *got;
4212
4213 mp = mono_mempool_new ();
4214
4215 if ((gpointer)code >= amodule->info.jit_code_start && (gpointer)code <= amodule->info.jit_code_end) {
4216 llvm = FALSE;
4217 got = amodule->got;
4218 } else {
4219 llvm = TRUE;
4220 got = amodule->llvm_got;
4221 g_assert (got);
4222 }
4223
4224 patches = load_patch_info (amodule, mp, n_patches, llvm, &got_slots, p, &p);
4225 if (patches == NULL) {
4226 mono_mempool_destroy (mp);
4227 goto cleanup;
4228 }
4229
4230 for (pindex = 0; pindex < n_patches; ++pindex) {
4231 MonoJumpInfo *ji = &patches [pindex];
4232 gpointer addr;
4233
4234 /*
4235 * For SFLDA, we need to call resolve_patch_target () since the GOT slot could have
4236 * been initialized by load_method () for a static cctor before the cctor has
4237 * finished executing (#23242).
4238 */
4239 if (!got [got_slots [pindex]] || ji->type == MONO_PATCH_INFO_SFLDA) {
4240 /* In llvm-only made, we might encounter shared methods */
4241 if (mono_llvm_only && ji->type == MONO_PATCH_INFO_METHOD && mono_method_check_context_used (ji->data.method)) {
4242 g_assert (context);
4243 ji->data.method = mono_class_inflate_generic_method_checked (ji->data.method, context, error);
4244 if (!mono_error_ok (error)) {
4245 g_free (got_slots);
4246 mono_mempool_destroy (mp);
4247 return FALSE;
4248 }
4249 }
4250 /* This cannot be resolved in mono_resolve_patch_target () */
4251 if (ji->type == MONO_PATCH_INFO_AOT_JIT_INFO) {
4252 // FIXME: Lookup using the index
4253 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
4254 ji->type = MONO_PATCH_INFO_ABS;
4255 ji->data.target = jinfo;
4256 }
4257 addr = mono_resolve_patch_target (method, domain, code, ji, TRUE, error);
4258 if (!mono_error_ok (error)) {
4259 g_free (got_slots);
4260 mono_mempool_destroy (mp);
4261 return FALSE;
4262 }
4263 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
4264 addr = mono_create_ftnptr (domain, addr);
4265 mono_memory_barrier ();
4266 got [got_slots [pindex]] = addr;
4267 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
4268 register_jump_target_got_slot (domain, ji->data.method, &(got [got_slots [pindex]]));
4269 }
4270 ji->type = MONO_PATCH_INFO_NONE;
4271 }
4272
4273 g_free (got_slots);
4274
4275 mono_mempool_destroy (mp);
4276 }
4277
4278 if (mini_get_debug_options ()->load_aot_jit_info_eagerly)
4279 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
4280
4281 gboolean inited_ok = TRUE;
4282 if (init_class)
4283 inited_ok = mono_runtime_class_init_full (mono_class_vtable (domain, init_class), error);
4284 else if (from_plt && klass_to_run_ctor && !mono_class_is_gtd (klass_to_run_ctor))
4285 inited_ok = mono_runtime_class_init_full (mono_class_vtable (domain, klass_to_run_ctor), error);
4286 if (!inited_ok)
4287 return FALSE;
4288
4289 return TRUE;
4290
4291 cleanup:
4292 if (jinfo)
4293 g_free (jinfo);
4294
4295 return FALSE;
4296 }
4297
4298 static void
4299 init_llvmonly_method (MonoAotModule *amodule, guint32 method_index, MonoMethod *method, MonoClass *init_class, MonoGenericContext *context)
4300 {
4301 gboolean res;
4302 MonoError error;
4303
4304 res = init_method (amodule, method_index, method, init_class, context, &error);
4305 if (!is_ok (&error)) {
4306 MonoException *ex = mono_error_convert_to_exception (&error);
4307 /* Its okay to raise in llvmonly mode */
4308 if (ex)
4309 mono_llvm_throw_exception ((MonoObject*)ex);
4310 }
4311 }
4312
4313 void
4314 mono_aot_init_llvm_method (gpointer aot_module, guint32 method_index)
4315 {
4316 MonoAotModule *amodule = (MonoAotModule *)aot_module;
4317
4318 init_llvmonly_method (amodule, method_index, NULL, NULL, NULL);
4319 }
4320
4321 void
4322 mono_aot_init_gshared_method_this (gpointer aot_module, guint32 method_index, MonoObject *this_obj)
4323 {
4324 MonoAotModule *amodule = (MonoAotModule *)aot_module;
4325 MonoClass *klass;
4326 MonoGenericContext *context;
4327 MonoMethod *method;
4328
4329 // FIXME:
4330 g_assert (this_obj);
4331 klass = this_obj->vtable->klass;
4332
4333 amodule_lock (amodule);
4334 method = (MonoMethod *)g_hash_table_lookup (amodule->extra_methods, GUINT_TO_POINTER (method_index));
4335 amodule_unlock (amodule);
4336
4337 g_assert (method);
4338 context = mono_method_get_context (method);
4339 g_assert (context);
4340
4341 init_llvmonly_method (amodule, method_index, NULL, klass, context);
4342 }
4343
4344 void
4345 mono_aot_init_gshared_method_mrgctx (gpointer aot_module, guint32 method_index, MonoMethodRuntimeGenericContext *rgctx)
4346 {
4347 MonoAotModule *amodule = (MonoAotModule *)aot_module;
4348 MonoGenericContext context = { NULL, NULL };
4349 MonoClass *klass = rgctx->class_vtable->klass;
4350
4351 if (mono_class_is_ginst (klass))
4352 context.class_inst = mono_class_get_generic_class (klass)->context.class_inst;
4353 else if (mono_class_is_gtd (klass))
4354 context.class_inst = mono_class_get_generic_container (klass)->context.class_inst;
4355 context.method_inst = rgctx->method_inst;
4356
4357 init_llvmonly_method (amodule, method_index, NULL, rgctx->class_vtable->klass, &context);
4358 }
4359
4360 void
4361 mono_aot_init_gshared_method_vtable (gpointer aot_module, guint32 method_index, MonoVTable *vtable)
4362 {
4363 MonoAotModule *amodule = (MonoAotModule *)aot_module;
4364 MonoClass *klass;
4365 MonoGenericContext *context;
4366 MonoMethod *method;
4367
4368 klass = vtable->klass;
4369
4370 amodule_lock (amodule);
4371 method = (MonoMethod *)g_hash_table_lookup (amodule->extra_methods, GUINT_TO_POINTER (method_index));
4372 amodule_unlock (amodule);
4373
4374 g_assert (method);
4375 context = mono_method_get_context (method);
4376 g_assert (context);
4377
4378 init_llvmonly_method (amodule, method_index, NULL, klass, context);
4379 }
4380
4381 /*
4382 * mono_aot_get_method_checked:
4383 *
4384 * Return a pointer to the AOTed native code for METHOD if it can be found,
4385 * NULL otherwise.
4386 * On platforms with function pointers, this doesn't return a function pointer.
4387 */
4388 gpointer
4389 mono_aot_get_method_checked (MonoDomain *domain, MonoMethod *method, MonoError *error)
4390 {
4391 MonoClass *klass = method->klass;
4392 MonoMethod *orig_method = method;
4393 guint32 method_index;
4394 MonoAotModule *amodule = (MonoAotModule *)klass->image->aot_module;
4395 guint8 *code;
4396 gboolean cache_result = FALSE;
4397 MonoError inner_error;
4398
4399 error_init (error);
4400
4401 if (domain != mono_get_root_domain ())
4402 /* Non shared AOT code can't be used in other appdomains */
4403 return NULL;
4404
4405 if (enable_aot_cache && !amodule && domain->entry_assembly && klass->image == mono_defaults.corlib) {
4406 /* This cannot be AOTed during startup, so do it now */
4407 if (!mscorlib_aot_loaded) {
4408 mscorlib_aot_loaded = TRUE;
4409 load_aot_module (klass->image->assembly, NULL);
4410 amodule = (MonoAotModule *)klass->image->aot_module;
4411 }
4412 }
4413
4414 if (!amodule)
4415 return NULL;
4416
4417 if (amodule->out_of_date)
4418 return NULL;
4419
4420 if ((method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
4421 (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
4422 (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
4423 (method->flags & METHOD_ATTRIBUTE_ABSTRACT))
4424 return NULL;
4425
4426 /*
4427 * Use the original method instead of its invoke-with-check wrapper.
4428 * This is not a problem when using full-aot, since it doesn't support
4429 * remoting.
4430 */
4431 if (mono_aot_only && method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)
4432 return mono_aot_get_method_checked (domain, mono_marshal_method_from_wrapper (method), error);
4433
4434 g_assert (klass->inited);
4435
4436 /* Find method index */
4437 method_index = 0xffffff;
4438 if (method->is_inflated && !method->wrapper_type && mono_method_is_generic_sharable_full (method, TRUE, FALSE, FALSE)) {
4439 MonoMethod *orig_method = method;
4440 /*
4441 * For generic methods, we store the fully shared instance in place of the
4442 * original method.
4443 */
4444 method = mono_method_get_declaring_generic_method (method);
4445 method_index = mono_metadata_token_index (method->token) - 1;
4446
4447 if (mono_llvm_only) {
4448 /* Needed by mono_aot_init_gshared_method_this () */
4449 /* orig_method is a random instance but it is enough to make init_method () work */
4450 amodule_lock (amodule);
4451 g_hash_table_insert (amodule->extra_methods, GUINT_TO_POINTER (method_index), orig_method);
4452 amodule_unlock (amodule);
4453 }
4454 } else if (method->is_inflated || !method->token) {
4455 /* This hash table is used to avoid the slower search in the extra_method_table in the AOT image */
4456 amodule_lock (amodule);
4457 code = (guint8 *)g_hash_table_lookup (amodule->method_to_code, method);
4458 amodule_unlock (amodule);
4459 if (code)
4460 return code;
4461
4462 cache_result = TRUE;
4463 method_index = find_aot_method (method, &amodule);
4464 /*
4465 * Special case the ICollection<T> wrappers for arrays, as they cannot
4466 * be statically enumerated, and each wrapper ends up calling the same
4467 * method in Array.
4468 */
4469 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED && method->klass->rank && strstr (method->name, "System.Collections.Generic")) {
4470 MonoMethod *m = mono_aot_get_array_helper_from_wrapper (method);
4471
4472 code = (guint8 *)mono_aot_get_method_checked (domain, m, &inner_error);
4473 mono_error_cleanup (&inner_error);
4474 if (code)
4475 return code;
4476 }
4477
4478 /*
4479 * Special case Array.GetGenericValueImpl which is a generic icall.
4480 * Generic sharing currently can't handle it, but the icall returns data using
4481 * an out parameter, so the managed-to-native wrappers can share the same code.
4482 */
4483 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass == mono_defaults.array_class && !strcmp (method->name, "GetGenericValueImpl")) {
4484 MonoMethod *m;
4485 MonoGenericContext ctx;
4486 MonoType *args [16];
4487
4488 if (mono_method_signature (method)->params [1]->type == MONO_TYPE_OBJECT)
4489 /* Avoid recursion */
4490 return NULL;
4491
4492 m = mono_class_get_method_from_name (mono_defaults.array_class, "GetGenericValueImpl", 2);
4493 g_assert (m);
4494
4495 memset (&ctx, 0, sizeof (ctx));
4496 args [0] = &mono_defaults.object_class->byval_arg;
4497 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
4498
4499 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method_checked (m, &ctx, error), TRUE, TRUE);
4500 if (!m)
4501 g_error ("AOT runtime could not load method due to %s", mono_error_get_message (error)); /* FIXME don't swallow the error */
4502
4503 /*
4504 * Get the code for the <object> instantiation which should be emitted into
4505 * the mscorlib aot image by the AOT compiler.
4506 */
4507 code = (guint8 *)mono_aot_get_method_checked (domain, m, &inner_error);
4508 mono_error_cleanup (&inner_error);
4509 if (code)
4510 return code;
4511 }
4512
4513 /* Same for CompareExchange<T> and Exchange<T> */
4514 /* Same for Volatile.Read<T>/Write<T> */
4515 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass->image == mono_defaults.corlib &&
4516 ((!strcmp (method->klass->name_space, "System.Threading") && !strcmp (method->klass->name, "Interlocked") && (!strcmp (method->name, "CompareExchange") || !strcmp (method->name, "Exchange")) && MONO_TYPE_IS_REFERENCE (mini_type_get_underlying_type (mono_method_signature (method)->params [1]))) ||
4517 (!strcmp (method->klass->name_space, "System.Threading") && !strcmp (method->klass->name, "Volatile") && (!strcmp (method->name, "Read") && MONO_TYPE_IS_REFERENCE (mini_type_get_underlying_type (mono_method_signature (method)->ret)))) ||
4518 (!strcmp (method->klass->name_space, "System.Threading") && !strcmp (method->klass->name, "Volatile") && (!strcmp (method->name, "Write") && MONO_TYPE_IS_REFERENCE (mini_type_get_underlying_type (mono_method_signature (method)->params [1])))))) {
4519 MonoMethod *m;
4520 MonoGenericContext ctx;
4521 MonoType *args [16];
4522 gpointer iter = NULL;
4523
4524 while ((m = mono_class_get_methods (method->klass, &iter))) {
4525 if (mono_method_signature (m)->generic_param_count && !strcmp (m->name, method->name))
4526 break;
4527 }
4528 g_assert (m);
4529
4530 memset (&ctx, 0, sizeof (ctx));
4531 args [0] = &mono_defaults.object_class->byval_arg;
4532 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
4533
4534 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method_checked (m, &ctx, error), TRUE, TRUE);
4535 if (!m)
4536 g_error ("AOT runtime could not load method due to %s", mono_error_get_message (error)); /* FIXME don't swallow the error */
4537
4538 /* Avoid recursion */
4539 if (method == m)
4540 return NULL;
4541
4542 /*
4543 * Get the code for the <object> instantiation which should be emitted into
4544 * the mscorlib aot image by the AOT compiler.
4545 */
4546 code = (guint8 *)mono_aot_get_method_checked (domain, m, &inner_error);
4547 mono_error_cleanup (&inner_error);
4548 if (code)
4549 return code;
4550 }
4551
4552 /* For ARRAY_ACCESSOR wrappers with reference types, use the <object> instantiation saved in corlib */
4553 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_UNKNOWN) {
4554 WrapperInfo *info = mono_marshal_get_wrapper_info (method);
4555
4556 if (info->subtype == WRAPPER_SUBTYPE_ARRAY_ACCESSOR) {
4557 MonoMethod *array_method = info->d.array_accessor.method;
4558 if (MONO_TYPE_IS_REFERENCE (&array_method->klass->element_class->byval_arg)) {
4559 int rank;
4560
4561 if (!strcmp (array_method->name, "Set"))
4562 rank = mono_method_signature (array_method)->param_count - 1;
4563 else if (!strcmp (array_method->name, "Get") || !strcmp (array_method->name, "Address"))
4564 rank = mono_method_signature (array_method)->param_count;
4565 else
4566 g_assert_not_reached ();
4567 MonoClass *obj_array_class = mono_array_class_get (mono_defaults.object_class, rank);
4568 MonoMethod *m = mono_class_get_method_from_name (obj_array_class, array_method->name, mono_method_signature (array_method)->param_count);
4569 g_assert (m);
4570
4571 m = mono_marshal_get_array_accessor_wrapper (m);
4572 if (m != method) {
4573 code = (guint8 *)mono_aot_get_method_checked (domain, m, &inner_error);
4574 mono_error_cleanup (&inner_error);
4575 if (code)
4576 return code;
4577 }
4578 }
4579 }
4580 }
4581
4582 if (method_index == 0xffffff && method->is_inflated && mono_method_is_generic_sharable_full (method, FALSE, TRUE, FALSE)) {
4583 /* Partial sharing */
4584 MonoMethod *shared;
4585
4586 shared = mini_get_shared_method (method);
4587 method_index = find_aot_method (shared, &amodule);
4588 if (method_index != 0xffffff)
4589 method = shared;
4590 }
4591
4592 if (method_index == 0xffffff && method->is_inflated && mono_method_is_generic_sharable_full (method, FALSE, FALSE, TRUE)) {
4593 MonoMethod *shared;
4594 /* gsharedvt */
4595 /* Use the all-vt shared method since this is what was AOTed */
4596 shared = mini_get_shared_method_full (method, TRUE, TRUE);
4597 method_index = find_aot_method (shared, &amodule);
4598 if (method_index != 0xffffff)
4599 method = mini_get_shared_method_full (method, TRUE, FALSE);
4600 }
4601
4602 if (method_index == 0xffffff) {
4603 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
4604 char *full_name;
4605
4606 full_name = mono_method_full_name (method, TRUE);
4607 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.", full_name);
4608 g_free (full_name);
4609 }
4610 return NULL;
4611 }
4612
4613 if (method_index == 0xffffff)
4614 return NULL;
4615
4616 /* Needed by find_jit_info */
4617 amodule_lock (amodule);
4618 g_hash_table_insert (amodule->extra_methods, GUINT_TO_POINTER (method_index), method);
4619 amodule_unlock (amodule);
4620 } else {
4621 /* Common case */
4622 method_index = mono_metadata_token_index (method->token) - 1;
4623 }
4624
4625 code = (guint8 *)load_method (domain, amodule, klass->image, method, method->token, method_index, error);
4626 if (!is_ok (error))
4627 return NULL;
4628 if (code && cache_result) {
4629 amodule_lock (amodule);
4630 g_hash_table_insert (amodule->method_to_code, orig_method, code);
4631 amodule_unlock (amodule);
4632 }
4633 return code;
4634 }
4635
4636 /*
4637 * mono_aot_get_method:
4638 *
4639 * Return a pointer to the AOTed native code for METHOD if it can be found,
4640 * NULL otherwise.
4641 * On platforms with function pointers, this doesn't return a function pointer.
4642 */
4643 gpointer
4644 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
4645 {
4646 MonoError error;
4647
4648 gpointer res = mono_aot_get_method_checked (domain, method, &error);
4649 /* This is external only, so its ok to raise here */
4650 mono_error_raise_exception (&error); /* OK to throw, external only without a good alternative */
4651 return res;
4652 }
4653
4654 /**
4655 * Same as mono_aot_get_method, but we try to avoid loading any metadata from the
4656 * method.
4657 */
4658 gpointer
4659 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token, MonoError *error)
4660 {
4661 MonoAotModule *aot_module = (MonoAotModule *)image->aot_module;
4662 int method_index;
4663 gpointer res;
4664
4665 error_init (error);
4666
4667 if (!aot_module)
4668 return NULL;
4669
4670 method_index = mono_metadata_token_index (token) - 1;
4671
4672 res = load_method (domain, aot_module, image, NULL, token, method_index, error);
4673 return res;
4674 }
4675
4676 typedef struct {
4677 guint8 *addr;
4678 gboolean res;
4679 } IsGotEntryUserData;
4680
4681 static void
4682 check_is_got_entry (gpointer key, gpointer value, gpointer user_data)
4683 {
4684 IsGotEntryUserData *data = (IsGotEntryUserData*)user_data;
4685 MonoAotModule *aot_module = (MonoAotModule*)value;
4686
4687 if (aot_module->got && (data->addr >= (guint8*)(aot_module->got)) && (data->addr < (guint8*)(aot_module->got + aot_module->info.got_size)))
4688 data->res = TRUE;
4689 }
4690
4691 gboolean
4692 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
4693 {
4694 IsGotEntryUserData user_data;
4695
4696 if (!aot_modules)
4697 return FALSE;
4698
4699 user_data.addr = addr;
4700 user_data.res = FALSE;
4701 mono_aot_lock ();
4702 g_hash_table_foreach (aot_modules, check_is_got_entry, &user_data);
4703 mono_aot_unlock ();
4704
4705 return user_data.res;
4706 }
4707
4708 typedef struct {
4709 guint8 *addr;
4710 MonoAotModule *module;
4711 } FindAotModuleUserData;
4712
4713 static void
4714 find_aot_module_cb (gpointer key, gpointer value, gpointer user_data)
4715 {
4716 FindAotModuleUserData *data = (FindAotModuleUserData*)user_data;
4717 MonoAotModule *aot_module = (MonoAotModule*)value;
4718
4719 if (amodule_contains_code_addr (aot_module, data->addr))
4720 data->module = aot_module;
4721 }
4722
4723 static inline MonoAotModule*
4724 find_aot_module (guint8 *code)
4725 {
4726 FindAotModuleUserData user_data;
4727
4728 if (!aot_modules)
4729 return NULL;
4730
4731 /* Reading these need no locking */
4732 if (((gsize)code < aot_code_low_addr) || ((gsize)code > aot_code_high_addr))
4733 return NULL;
4734
4735 user_data.addr = code;
4736 user_data.module = NULL;
4737
4738 mono_aot_lock ();
4739 g_hash_table_foreach (aot_modules, find_aot_module_cb, &user_data);
4740 mono_aot_unlock ();
4741
4742 return user_data.module;
4743 }
4744
4745 void
4746 mono_aot_patch_plt_entry (guint8 *code, guint8 *plt_entry, gpointer *got, mgreg_t *regs, guint8 *addr)
4747 {
4748 MonoAotModule *amodule;
4749
4750 /*
4751 * Since AOT code is only used in the root domain,
4752 * mono_domain_get () != mono_get_root_domain () means the calling method
4753 * is AppDomain:InvokeInDomain, so this is the same check as in
4754 * mono_method_same_domain () but without loading the metadata for the method.
4755 */
4756 if (mono_domain_get () == mono_get_root_domain ()) {
4757 if (!got) {
4758 amodule = find_aot_module (code);
4759 if (amodule)
4760 got = amodule->got;
4761 }
4762 mono_arch_patch_plt_entry (plt_entry, got, regs, addr);
4763 }
4764 }
4765
4766 /*
4767 * mono_aot_plt_resolve:
4768 *
4769 * This function is called by the entries in the PLT to resolve the actual method that
4770 * needs to be called. It returns a trampoline to the method and patches the PLT entry.
4771 * Returns NULL if the something cannot be loaded.
4772 */
4773 gpointer
4774 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code, MonoError *error)
4775 {
4776 #ifdef MONO_ARCH_AOT_SUPPORTED
4777 guint8 *p, *target, *plt_entry;
4778 MonoJumpInfo ji;
4779 MonoAotModule *module = (MonoAotModule*)aot_module;
4780 gboolean res, no_ftnptr = FALSE;
4781 MonoMemPool *mp;
4782 gboolean using_gsharedvt = FALSE;
4783
4784 error_init (error);
4785
4786 //printf ("DYN: %p %d\n", aot_module, plt_info_offset);
4787
4788 p = &module->blob [plt_info_offset];
4789
4790 ji.type = (MonoJumpInfoType)decode_value (p, &p);
4791
4792 mp = mono_mempool_new ();
4793 res = decode_patch (module, mp, &ji, p, &p);
4794
4795 if (!res) {
4796 mono_mempool_destroy (mp);
4797 return NULL;
4798 }
4799
4800 #ifdef MONO_ARCH_GSHAREDVT_SUPPORTED
4801 using_gsharedvt = TRUE;
4802 #endif
4803
4804 /*
4805 * Avoid calling resolve_patch_target in the full-aot case if possible, since
4806 * it would create a trampoline, and we don't need that.
4807 * We could do this only if the method does not need the special handling
4808 * in mono_magic_trampoline ().
4809 */
4810 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) &&
4811 !mono_method_needs_static_rgctx_invoke (ji.data.method, FALSE) && !using_gsharedvt) {
4812 target = (guint8 *)mono_jit_compile_method (ji.data.method, error);
4813 if (!mono_error_ok (error)) {
4814 mono_mempool_destroy (mp);
4815 return NULL;
4816 }
4817 no_ftnptr = TRUE;
4818 } else {
4819 target = (guint8 *)mono_resolve_patch_target (NULL, mono_domain_get (), NULL, &ji, TRUE, error);
4820 if (!mono_error_ok (error)) {
4821 mono_mempool_destroy (mp);
4822 return NULL;
4823 }
4824 }
4825
4826 /*
4827 * The trampoline expects us to return a function descriptor on platforms which use
4828 * it, but resolve_patch_target returns a direct function pointer for some type of
4829 * patches, so have to translate between the two.
4830 * FIXME: Clean this up, but how ?
4831 */
4832 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) {
4833 /* These should already have a function descriptor */
4834 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
4835 /* Our function descriptors have a 0 environment, gcc created ones don't */
4836 if (ji.type != MONO_PATCH_INFO_INTERNAL_METHOD && ji.type != MONO_PATCH_INFO_JIT_ICALL_ADDR && ji.type != MONO_PATCH_INFO_ICALL_ADDR)
4837 g_assert (((gpointer*)target) [2] == 0);
4838 #endif
4839 /* Empty */
4840 } else if (!no_ftnptr) {
4841 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
4842 g_assert (((gpointer*)target) [2] != 0);
4843 #endif
4844 target = (guint8 *)mono_create_ftnptr (mono_domain_get (), target);
4845 }
4846
4847 mono_mempool_destroy (mp);
4848
4849 /* Patch the PLT entry with target which might be the actual method not a trampoline */
4850 plt_entry = mono_aot_get_plt_entry (code);
4851 g_assert (plt_entry);
4852 mono_aot_patch_plt_entry (code, plt_entry, module->got, NULL, target);
4853
4854 return target;
4855 #else
4856 g_assert_not_reached ();
4857 return NULL;
4858 #endif
4859 }
4860
4861 /**
4862 * init_plt:
4863 *
4864 * Initialize the PLT table of the AOT module. Called lazily when the first AOT
4865 * method in the module is loaded to avoid committing memory by writing to it.
4866 * LOCKING: Assumes the AMODULE lock is held.
4867 */
4868 static void
4869 init_plt (MonoAotModule *amodule)
4870 {
4871 int i;
4872 gpointer tramp;
4873
4874 if (amodule->plt_inited)
4875 return;
4876
4877 if (amodule->info.plt_size <= 1) {
4878 amodule->plt_inited = TRUE;
4879 return;
4880 }
4881
4882 tramp = mono_create_specific_trampoline (amodule, MONO_TRAMPOLINE_AOT_PLT, mono_get_root_domain (), NULL);
4883
4884 /*
4885 * Initialize the PLT entries in the GOT to point to the default targets.
4886 */
4887
4888 tramp = mono_create_ftnptr (mono_domain_get (), tramp);
4889 for (i = 1; i < amodule->info.plt_size; ++i)
4890 /* All the default entries point to the AOT trampoline */
4891 ((gpointer*)amodule->got)[amodule->info.plt_got_offset_base + i] = tramp;
4892
4893 amodule->plt_inited = TRUE;
4894 }
4895
4896 /*
4897 * mono_aot_get_plt_entry:
4898 *
4899 * Return the address of the PLT entry called by the code at CODE if exists.
4900 */
4901 guint8*
4902 mono_aot_get_plt_entry (guint8 *code)
4903 {
4904 MonoAotModule *amodule = find_aot_module (code);
4905 guint8 *target = NULL;
4906
4907 if (!amodule)
4908 return NULL;
4909
4910 #ifdef TARGET_ARM
4911 if (is_thumb_code (amodule, code - 4))
4912 return mono_arm_get_thumb_plt_entry (code);
4913 #endif
4914
4915 #ifdef MONO_ARCH_AOT_SUPPORTED
4916 target = mono_arch_get_call_target (code);
4917 #else
4918 g_assert_not_reached ();
4919 #endif
4920
4921 #ifdef MONOTOUCH
4922 while (target != NULL) {
4923 if ((target >= (guint8*)(amodule->plt)) && (target < (guint8*)(amodule->plt_end)))
4924 return target;
4925
4926 // Add 4 since mono_arch_get_call_target assumes we're passing
4927 // the instruction after the actual branch instruction.
4928 target = mono_arch_get_call_target (target + 4);
4929 }
4930
4931 return NULL;
4932 #else
4933 if ((target >= (guint8*)(amodule->plt)) && (target < (guint8*)(amodule->plt_end)))
4934 return target;
4935 else
4936 return NULL;
4937 #endif
4938 }
4939
4940 /*
4941 * mono_aot_get_plt_info_offset:
4942 *
4943 * Return the PLT info offset belonging to the plt entry called by CODE.
4944 */
4945 guint32
4946 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
4947 {
4948 guint8 *plt_entry = mono_aot_get_plt_entry (code);
4949
4950 g_assert (plt_entry);
4951
4952 /* The offset is embedded inside the code after the plt entry */
4953 #ifdef MONO_ARCH_AOT_SUPPORTED
4954 return mono_arch_get_plt_info_offset (plt_entry, regs, code);
4955 #else
4956 g_assert_not_reached ();
4957 return 0;
4958 #endif
4959 }
4960
4961 static gpointer
4962 mono_create_ftnptr_malloc (guint8 *code)
4963 {
4964 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
4965 MonoPPCFunctionDescriptor *ftnptr = g_malloc0 (sizeof (MonoPPCFunctionDescriptor));
4966
4967 ftnptr->code = code;
4968 ftnptr->toc = NULL;
4969 ftnptr->env = NULL;
4970
4971 return ftnptr;
4972 #else
4973 return code;
4974 #endif
4975 }
4976
4977 /*
4978 * mono_aot_register_jit_icall:
4979 *
4980 * Register a JIT icall which is called by trampolines in full-aot mode. This should
4981 * be called from mono_arch_init () during startup.
4982 */
4983 void
4984 mono_aot_register_jit_icall (const char *name, gpointer addr)
4985 {
4986 /* No need for locking */
4987 if (!aot_jit_icall_hash)
4988 aot_jit_icall_hash = g_hash_table_new (g_str_hash, g_str_equal);
4989 g_hash_table_insert (aot_jit_icall_hash, (char*)name, addr);
4990 }
4991
4992 /*
4993 * load_function_full:
4994 *
4995 * Load the function named NAME from the aot image.
4996 */
4997 static gpointer
4998 load_function_full (MonoAotModule *amodule, const char *name, MonoTrampInfo **out_tinfo)
4999 {
5000 char *symbol;
5001 guint8 *p;
5002 int n_patches, pindex;
5003 MonoMemPool *mp;
5004 gpointer code;
5005 guint32 info_offset;
5006
5007 /* Load the code */
5008
5009 symbol = g_strdup_printf ("%s", name);
5010 find_amodule_symbol (amodule, symbol, (gpointer *)&code);
5011 g_free (symbol);
5012 if (!code)
5013 g_error ("Symbol '%s' not found in AOT file '%s'.\n", name, amodule->aot_name);
5014
5015 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT: FOUND function '%s' in AOT file '%s'.", name, amodule->aot_name);
5016
5017 /* Load info */
5018
5019 symbol = g_strdup_printf ("%s_p", name);
5020 find_amodule_symbol (amodule, symbol, (gpointer *)&p);
5021 g_free (symbol);
5022 if (!p)
5023 /* Nothing to patch */
5024 return code;
5025
5026 info_offset = *(guint32*)p;
5027 if (out_tinfo) {
5028 MonoTrampInfo *tinfo;
5029 guint32 code_size, uw_info_len, uw_offset;
5030 guint8 *uw_info;
5031 /* Construct a MonoTrampInfo from the data in the AOT image */
5032
5033 p += sizeof (guint32);
5034 code_size = *(guint32*)p;
5035 p += sizeof (guint32);
5036 uw_offset = *(guint32*)p;
5037 uw_info = amodule->unwind_info + uw_offset;
5038 uw_info_len = decode_value (uw_info, &uw_info);
5039
5040 tinfo = g_new0 (MonoTrampInfo, 1);
5041 tinfo->code = (guint8 *)code;
5042 tinfo->code_size = code_size;
5043 tinfo->uw_info_len = uw_info_len;
5044 if (uw_info_len)
5045 tinfo->uw_info = uw_info;
5046
5047 *out_tinfo = tinfo;
5048 }
5049
5050 p = amodule->blob + info_offset;
5051
5052 /* Similar to mono_aot_load_method () */
5053
5054 n_patches = decode_value (p, &p);
5055
5056 if (n_patches) {
5057 MonoJumpInfo *patches;
5058 guint32 *got_slots;
5059
5060 mp = mono_mempool_new ();
5061
5062 patches = load_patch_info (amodule, mp, n_patches, FALSE, &got_slots, p, &p);
5063 g_assert (patches);
5064
5065 for (pindex = 0; pindex < n_patches; ++pindex) {
5066 MonoJumpInfo *ji = &patches [pindex];
5067 MonoError error;
5068 gpointer target;
5069
5070 if (amodule->got [got_slots [pindex]])
5071 continue;
5072
5073 /*
5074 * When this code is executed, the runtime may not be initalized yet, so
5075 * resolve the patch info by hand.
5076 */
5077 if (ji->type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
5078 if (!strcmp (ji->data.name, "mono_get_lmf_addr")) {
5079 target = mono_get_lmf_addr;
5080 } else if (!strcmp (ji->data.name, "mono_thread_force_interruption_checkpoint_noraise")) {
5081 target = mono_thread_force_interruption_checkpoint_noraise;
5082 } else if (!strcmp (ji->data.name, "mono_interruption_checkpoint_from_trampoline")) {
5083 target = mono_interruption_checkpoint_from_trampoline;
5084 } else if (!strcmp (ji->data.name, "mono_exception_from_token")) {
5085 target = mono_exception_from_token;
5086 } else if (!strcmp (ji->data.name, "mono_throw_exception")) {
5087 target = mono_get_throw_exception ();
5088 } else if (strstr (ji->data.name, "trampoline_func_") == ji->data.name) {
5089 MonoTrampolineType tramp_type2 = (MonoTrampolineType)atoi (ji->data.name + strlen ("trampoline_func_"));
5090 target = (gpointer)mono_get_trampoline_func (tramp_type2);
5091 } else if (strstr (ji->data.name, "specific_trampoline_lazy_fetch_") == ji->data.name) {
5092 /* atoll is needed because the the offset is unsigned */
5093 guint32 slot;
5094 int res;
5095
5096 res = sscanf (ji->data.name, "specific_trampoline_lazy_fetch_%u", &slot);
5097 g_assert (res == 1);
5098 target = mono_create_specific_trampoline (GUINT_TO_POINTER (slot), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, mono_get_root_domain (), NULL);
5099 target = mono_create_ftnptr_malloc ((guint8 *)target);
5100 } else if (!strcmp (ji->data.name, "debugger_agent_single_step_from_context")) {
5101 target = debugger_agent_single_step_from_context;
5102 } else if (!strcmp (ji->data.name, "debugger_agent_breakpoint_from_context")) {
5103 target = debugger_agent_breakpoint_from_context;
5104 } else if (!strcmp (ji->data.name, "throw_exception_addr")) {
5105 target = mono_get_throw_exception_addr ();
5106 } else if (strstr (ji->data.name, "generic_trampoline_")) {
5107 target = mono_aot_get_trampoline (ji->data.name);
5108 } else if (aot_jit_icall_hash && g_hash_table_lookup (aot_jit_icall_hash, ji->data.name)) {
5109 /* Registered by mono_arch_init () */
5110 target = g_hash_table_lookup (aot_jit_icall_hash, ji->data.name);
5111 } else {
5112 fprintf (stderr, "Unknown relocation '%s'\n", ji->data.name);
5113 g_assert_not_reached ();
5114 target = NULL;
5115 }
5116 } else {
5117 /* Hopefully the code doesn't have patches which need method or
5118 * domain to be set.
5119 */
5120 target = mono_resolve_patch_target (NULL, NULL, (guint8 *)code, ji, FALSE, &error);
5121 mono_error_assert_ok (&error);
5122 g_assert (target);
5123 }
5124
5125 amodule->got [got_slots [pindex]] = target;
5126 }
5127
5128 g_free (got_slots);
5129
5130 mono_mempool_destroy (mp);
5131 }
5132
5133 return code;
5134 }
5135
5136 static gpointer
5137 load_function (MonoAotModule *amodule, const char *name)
5138 {
5139 return load_function_full (amodule, name, NULL);
5140 }
5141
5142 static MonoAotModule*
5143 get_mscorlib_aot_module (void)
5144 {
5145 MonoImage *image;
5146 MonoAotModule *amodule;
5147
5148 image = mono_defaults.corlib;
5149 if (image)
5150 amodule = (MonoAotModule *)image->aot_module;
5151 else
5152 amodule = mscorlib_aot_module;
5153 g_assert (amodule);
5154 return amodule;
5155 }
5156
5157 static void
5158 no_trampolines (void)
5159 {
5160 g_assert_not_reached ();
5161 }
5162
5163 /*
5164 * Return the trampoline identified by NAME from the mscorlib AOT file.
5165 * On ppc64, this returns a function descriptor.
5166 */
5167 gpointer
5168 mono_aot_get_trampoline_full (const char *name, MonoTrampInfo **out_tinfo)
5169 {
5170 MonoAotModule *amodule = get_mscorlib_aot_module ();
5171
5172 if (mono_llvm_only) {
5173 *out_tinfo = NULL;
5174 return no_trampolines;
5175 }
5176
5177 return mono_create_ftnptr_malloc ((guint8 *)load_function_full (amodule, name, out_tinfo));
5178 }
5179
5180 gpointer
5181 mono_aot_get_trampoline (const char *name)
5182 {
5183 MonoTrampInfo *out_tinfo;
5184 gpointer code;
5185
5186 code = mono_aot_get_trampoline_full (name, &out_tinfo);
5187 mono_aot_tramp_info_register (out_tinfo, NULL);
5188
5189 return code;
5190 }
5191
5192 static gpointer
5193 read_unwind_info (MonoAotModule *amodule, MonoTrampInfo *info, const char *symbol_name)
5194 {
5195 gpointer symbol_addr;
5196 guint32 uw_offset, uw_info_len;
5197 guint8 *uw_info;
5198
5199 find_amodule_symbol (amodule, symbol_name, &symbol_addr);
5200
5201 if (!symbol_addr)
5202 return NULL;
5203
5204 uw_offset = *(guint32*)symbol_addr;
5205 uw_info = amodule->unwind_info + uw_offset;
5206 uw_info_len = decode_value (uw_info, &uw_info);
5207
5208 info->uw_info_len = uw_info_len;
5209 if (uw_info_len)
5210 info->uw_info = uw_info;
5211 else
5212 info->uw_info = NULL;
5213
5214 /* If successful return the address of the following data */
5215 return (guint32*)symbol_addr + 1;
5216 }
5217
5218 #ifdef MONOTOUCH
5219 #include <mach/mach.h>
5220
5221 static TrampolinePage* trampoline_pages [MONO_AOT_TRAMP_NUM];
5222
5223 static void
5224 read_page_trampoline_uwinfo (MonoTrampInfo *info, int tramp_type, gboolean is_generic)
5225 {
5226 char symbol_name [128];
5227
5228 if (tramp_type == MONO_AOT_TRAMP_SPECIFIC)
5229 sprintf (symbol_name, "specific_trampolines_page_%s_p", is_generic ? "gen" : "sp");
5230 else if (tramp_type == MONO_AOT_TRAMP_STATIC_RGCTX)
5231 sprintf (symbol_name, "rgctx_trampolines_page_%s_p", is_generic ? "gen" : "sp");
5232 else if (tramp_type == MONO_AOT_TRAMP_IMT)
5233 sprintf (symbol_name, "imt_trampolines_page_%s_p", is_generic ? "gen" : "sp");
5234 else if (tramp_type == MONO_AOT_TRAMP_GSHAREDVT_ARG)
5235 sprintf (symbol_name, "gsharedvt_trampolines_page_%s_p", is_generic ? "gen" : "sp");
5236 else
5237 g_assert_not_reached ();
5238
5239 read_unwind_info (mono_defaults.corlib->aot_module, info, symbol_name);
5240 }
5241
5242 static unsigned char*
5243 get_new_trampoline_from_page (int tramp_type)
5244 {
5245 MonoAotModule *amodule;
5246 MonoImage *image;
5247 TrampolinePage *page;
5248 int count;
5249 void *tpage;
5250 vm_address_t addr, taddr;
5251 kern_return_t ret;
5252 vm_prot_t prot, max_prot;
5253 int psize, specific_trampoline_size;
5254 unsigned char *code;
5255
5256 specific_trampoline_size = 2 * sizeof (gpointer);
5257
5258 mono_aot_page_lock ();
5259 page = trampoline_pages [tramp_type];
5260 if (page && page->trampolines < page->trampolines_end) {
5261 code = page->trampolines;
5262 page->trampolines += specific_trampoline_size;
5263 mono_aot_page_unlock ();
5264 return code;
5265 }
5266 mono_aot_page_unlock ();
5267 /* the trampoline template page is in the mscorlib module */
5268 image = mono_defaults.corlib;
5269 g_assert (image);
5270
5271 psize = MONO_AOT_TRAMP_PAGE_SIZE;
5272
5273 amodule = image->aot_module;
5274 g_assert (amodule);
5275
5276 if (tramp_type == MONO_AOT_TRAMP_SPECIFIC)
5277 tpage = load_function (amodule, "specific_trampolines_page");
5278 else if (tramp_type == MONO_AOT_TRAMP_STATIC_RGCTX)
5279 tpage = load_function (amodule, "rgctx_trampolines_page");
5280 else if (tramp_type == MONO_AOT_TRAMP_IMT)
5281 tpage = load_function (amodule, "imt_trampolines_page");
5282 else if (tramp_type == MONO_AOT_TRAMP_GSHAREDVT_ARG)
5283 tpage = load_function (amodule, "gsharedvt_arg_trampolines_page");
5284 else
5285 g_error ("Incorrect tramp type for trampolines page");
5286 g_assert (tpage);
5287 /*g_warning ("loaded trampolines page at %x", tpage);*/
5288
5289 /* avoid the unlikely case of looping forever */
5290 count = 40;
5291 page = NULL;
5292 while (page == NULL && count-- > 0) {
5293 MonoTrampInfo *gen_info, *sp_info;
5294
5295 addr = 0;
5296 /* allocate two contiguous pages of memory: the first page will contain the data (like a local constant pool)
5297 * while the second will contain the trampolines.
5298 */
5299 do {
5300 ret = vm_allocate (mach_task_self (), &addr, psize * 2, VM_FLAGS_ANYWHERE);
5301 } while (ret == KERN_ABORTED);
5302 if (ret != KERN_SUCCESS) {
5303 g_error ("Cannot allocate memory for trampolines: %d", ret);
5304 break;
5305 }
5306 /*g_warning ("allocated trampoline double page at %x", addr);*/
5307 /* replace the second page with a remapped trampoline page */
5308 taddr = addr + psize;
5309 vm_deallocate (mach_task_self (), taddr, psize);
5310 ret = vm_remap (mach_task_self (), &taddr, psize, 0, FALSE, mach_task_self(), (vm_address_t)tpage, FALSE, &prot, &max_prot, VM_INHERIT_SHARE);
5311 if (ret != KERN_SUCCESS) {
5312 /* someone else got the page, try again */
5313 vm_deallocate (mach_task_self (), addr, psize);
5314 continue;
5315 }
5316 /*g_warning ("remapped trampoline page at %x", taddr);*/
5317
5318 mono_aot_page_lock ();
5319 page = trampoline_pages [tramp_type];
5320 /* some other thread already allocated, so use that to avoid wasting memory */
5321 if (page && page->trampolines < page->trampolines_end) {
5322 code = page->trampolines;
5323 page->trampolines += specific_trampoline_size;
5324 mono_aot_page_unlock ();
5325 vm_deallocate (mach_task_self (), addr, psize);
5326 vm_deallocate (mach_task_self (), taddr, psize);
5327 return code;
5328 }
5329 page = (TrampolinePage*)addr;
5330 page->next = trampoline_pages [tramp_type];
5331 trampoline_pages [tramp_type] = page;
5332 page->trampolines = (void*)(taddr + amodule->info.tramp_page_code_offsets [tramp_type]);
5333 page->trampolines_end = (void*)(taddr + psize - 64);
5334 code = page->trampolines;
5335 page->trampolines += specific_trampoline_size;
5336 mono_aot_page_unlock ();
5337
5338 /* Register the generic part at the beggining of the trampoline page */
5339 gen_info = mono_tramp_info_create (NULL, (guint8*)taddr, amodule->info.tramp_page_code_offsets [tramp_type], NULL, NULL);
5340 read_page_trampoline_uwinfo (gen_info, tramp_type, TRUE);
5341 mono_aot_tramp_info_register (gen_info, NULL);
5342 /*
5343 * FIXME
5344 * Registering each specific trampoline produces a lot of
5345 * MonoJitInfo structures. Jump trampolines are also registered
5346 * separately.
5347 */
5348 if (tramp_type != MONO_AOT_TRAMP_SPECIFIC) {
5349 /* Register the rest of the page as a single trampoline */
5350 sp_info = mono_tramp_info_create (NULL, code, page->trampolines_end - code, NULL, NULL);
5351 read_page_trampoline_uwinfo (sp_info, tramp_type, FALSE);
5352 mono_aot_tramp_info_register (sp_info, NULL);
5353 }
5354 return code;
5355 }
5356 g_error ("Cannot allocate more trampoline pages: %d", ret);
5357 return NULL;
5358 }
5359
5360 #else
5361 static unsigned char*
5362 get_new_trampoline_from_page (int tramp_type)
5363 {
5364 g_error ("Page trampolines not supported.");
5365 return NULL;
5366 }
5367 #endif
5368
5369
5370 static gpointer
5371 get_new_specific_trampoline_from_page (gpointer tramp, gpointer arg)
5372 {
5373 void *code;
5374 gpointer *data;
5375
5376 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_SPECIFIC);
5377
5378 data = (gpointer*)((char*)code - MONO_AOT_TRAMP_PAGE_SIZE);
5379 data [0] = arg;
5380 data [1] = tramp;
5381 /*g_warning ("new trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
5382 return code;
5383
5384 }
5385
5386 static gpointer
5387 get_new_rgctx_trampoline_from_page (gpointer tramp, gpointer arg)
5388 {
5389 void *code;
5390 gpointer *data;
5391
5392 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_STATIC_RGCTX);
5393
5394 data = (gpointer*)((char*)code - MONO_AOT_TRAMP_PAGE_SIZE);
5395 data [0] = arg;
5396 data [1] = tramp;
5397 /*g_warning ("new rgctx trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
5398 return code;
5399
5400 }
5401
5402 static gpointer
5403 get_new_imt_trampoline_from_page (gpointer arg)
5404 {
5405 void *code;
5406 gpointer *data;
5407
5408 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_IMT);
5409
5410 data = (gpointer*)((char*)code - MONO_AOT_TRAMP_PAGE_SIZE);
5411 data [0] = arg;
5412 /*g_warning ("new imt trampoline at %p for data %p, (stored at %p)", code, arg, data);*/
5413 return code;
5414
5415 }
5416
5417 static gpointer
5418 get_new_gsharedvt_arg_trampoline_from_page (gpointer tramp, gpointer arg)
5419 {
5420 void *code;
5421 gpointer *data;
5422
5423 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_GSHAREDVT_ARG);
5424
5425 data = (gpointer*)((char*)code - MONO_AOT_TRAMP_PAGE_SIZE);
5426 data [0] = arg;
5427 data [1] = tramp;
5428 /*g_warning ("new rgctx trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
5429 return code;
5430 }
5431
5432 /* Return a given kind of trampoline */
5433 /* FIXME set unwind info for these trampolines */
5434 static gpointer
5435 get_numerous_trampoline (MonoAotTrampoline tramp_type, int n_got_slots, MonoAotModule **out_amodule, guint32 *got_offset, guint32 *out_tramp_size)
5436 {
5437 MonoImage *image;
5438 MonoAotModule *amodule = get_mscorlib_aot_module ();
5439 int index, tramp_size;
5440
5441 /* Currently, we keep all trampolines in the mscorlib AOT image */
5442 image = mono_defaults.corlib;
5443
5444 *out_amodule = amodule;
5445
5446 mono_aot_lock ();
5447
5448 #ifdef MONOTOUCH
5449 #define MONOTOUCH_TRAMPOLINES_ERROR ". See http://docs.xamarin.com/ios/troubleshooting for instructions on how to fix this condition."
5450 #else
5451 #define MONOTOUCH_TRAMPOLINES_ERROR ""
5452 #endif
5453 if (amodule->trampoline_index [tramp_type] == amodule->info.num_trampolines [tramp_type]) {
5454 g_error ("Ran out of trampolines of type %d in '%s' (limit %d)%s\n",
5455 tramp_type, image ? image->name : "mscorlib", amodule->info.num_trampolines [tramp_type], MONOTOUCH_TRAMPOLINES_ERROR);
5456 }
5457 index = amodule->trampoline_index [tramp_type] ++;
5458
5459 mono_aot_unlock ();
5460
5461 *got_offset = amodule->info.trampoline_got_offset_base [tramp_type] + (index * n_got_slots);
5462
5463 tramp_size = amodule->info.trampoline_size [tramp_type];
5464
5465 if (out_tramp_size)
5466 *out_tramp_size = tramp_size;
5467
5468 return amodule->trampolines [tramp_type] + (index * tramp_size);
5469 }
5470
5471 static void
5472 no_specific_trampoline (void)
5473 {
5474 g_assert_not_reached ();
5475 }
5476
5477 /*
5478 * Return a specific trampoline from the AOT file.
5479 */
5480 gpointer
5481 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
5482 {
5483 MonoAotModule *amodule;
5484 guint32 got_offset, tramp_size;
5485 guint8 *code, *tramp;
5486 static gpointer generic_trampolines [MONO_TRAMPOLINE_NUM];
5487 static gboolean inited;
5488 static guint32 num_trampolines;
5489
5490 if (mono_llvm_only) {
5491 *code_len = 1;
5492 return no_specific_trampoline;
5493 }
5494
5495 if (!inited) {
5496 mono_aot_lock ();
5497
5498 if (!inited) {
5499 mono_counters_register ("Specific trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &num_trampolines);
5500 inited = TRUE;
5501 }
5502
5503 mono_aot_unlock ();
5504 }
5505
5506 num_trampolines ++;
5507
5508 if (!generic_trampolines [tramp_type]) {
5509 char *symbol;
5510
5511 symbol = mono_get_generic_trampoline_name (tramp_type);
5512 generic_trampolines [tramp_type] = mono_aot_get_trampoline (symbol);
5513 g_free (symbol);
5514 }
5515
5516 tramp = (guint8 *)generic_trampolines [tramp_type];
5517 g_assert (tramp);
5518
5519 if (USE_PAGE_TRAMPOLINES) {
5520 code = (guint8 *)get_new_specific_trampoline_from_page (tramp, arg1);
5521 tramp_size = 8;
5522 } else {
5523 code = (guint8 *)get_numerous_trampoline (MONO_AOT_TRAMP_SPECIFIC, 2, &amodule, &got_offset, &tramp_size);
5524
5525 amodule->got [got_offset] = tramp;
5526 amodule->got [got_offset + 1] = arg1;
5527 }
5528
5529 if (code_len)
5530 *code_len = tramp_size;
5531
5532 return code;
5533 }
5534
5535 gpointer
5536 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
5537 {
5538 MonoAotModule *amodule;
5539 guint8 *code;
5540 guint32 got_offset;
5541
5542 if (USE_PAGE_TRAMPOLINES) {
5543 code = (guint8 *)get_new_rgctx_trampoline_from_page (addr, ctx);
5544 } else {
5545 code = (guint8 *)get_numerous_trampoline (MONO_AOT_TRAMP_STATIC_RGCTX, 2, &amodule, &got_offset, NULL);
5546
5547 amodule->got [got_offset] = ctx;
5548 amodule->got [got_offset + 1] = addr;
5549 }
5550
5551 /* The caller expects an ftnptr */
5552 return mono_create_ftnptr (mono_domain_get (), code);
5553 }
5554
5555 gpointer
5556 mono_aot_get_unbox_trampoline (MonoMethod *method)
5557 {
5558 guint32 method_index = mono_metadata_token_index (method->token) - 1;
5559 MonoAotModule *amodule;
5560 gpointer code;
5561 guint32 *ut, *ut_end, *entry;
5562 int low, high, entry_index = 0;
5563 gpointer symbol_addr;
5564 MonoTrampInfo *tinfo;
5565
5566 if (method->is_inflated && !mono_method_is_generic_sharable_full (method, FALSE, FALSE, FALSE)) {
5567 method_index = find_aot_method (method, &amodule);
5568 if (method_index == 0xffffff && mono_method_is_generic_sharable_full (method, FALSE, TRUE, FALSE)) {
5569 MonoMethod *shared = mini_get_shared_method_full (method, FALSE, FALSE);
5570 method_index = find_aot_method (shared, &amodule);
5571 }
5572 if (method_index == 0xffffff && mono_method_is_generic_sharable_full (method, FALSE, TRUE, TRUE)) {
5573 MonoMethod *shared = mini_get_shared_method_full (method, TRUE, TRUE);
5574 method_index = find_aot_method (shared, &amodule);
5575 }
5576 g_assert (method_index != 0xffffff);
5577 } else {
5578 amodule = (MonoAotModule *)method->klass->image->aot_module;
5579 g_assert (amodule);
5580 }
5581
5582 if (amodule->info.llvm_get_unbox_tramp) {
5583 gpointer (*get_tramp) (int) = (gpointer (*)(int))amodule->info.llvm_get_unbox_tramp;
5584 code = get_tramp (method_index);
5585
5586 if (code)
5587 return code;
5588 }
5589
5590 ut = amodule->unbox_trampolines;
5591 ut_end = amodule->unbox_trampolines_end;
5592
5593 /* Do a binary search in the sorted table */
5594 code = NULL;
5595 low = 0;
5596 high = (ut_end - ut);
5597 while (low < high) {
5598 entry_index = (low + high) / 2;
5599 entry = &ut [entry_index];
5600 if (entry [0] < method_index) {
5601 low = entry_index + 1;
5602 } else if (entry [0] > method_index) {
5603 high = entry_index;
5604 } else {
5605 break;
5606 }
5607 }
5608
5609 code = get_call_table_entry (amodule->unbox_trampoline_addresses, entry_index);
5610 g_assert (code);
5611
5612 tinfo = mono_tramp_info_create (NULL, (guint8 *)code, 0, NULL, NULL);
5613
5614 symbol_addr = read_unwind_info (amodule, tinfo, "unbox_trampoline_p");
5615 if (!symbol_addr) {
5616 mono_tramp_info_free (tinfo);
5617 return FALSE;
5618 }
5619
5620 tinfo->code_size = *(guint32*)symbol_addr;
5621 mono_aot_tramp_info_register (tinfo, NULL);
5622
5623 /* The caller expects an ftnptr */
5624 return mono_create_ftnptr (mono_domain_get (), code);
5625 }
5626
5627 gpointer
5628 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
5629 {
5630 char *symbol;
5631 gpointer code;
5632 MonoAotModule *amodule = (MonoAotModule *)mono_defaults.corlib->aot_module;
5633 guint32 index = MONO_RGCTX_SLOT_INDEX (slot);
5634 static int count = 0;
5635
5636 count ++;
5637 if (index >= amodule->info.num_rgctx_fetch_trampolines) {
5638 static gpointer addr;
5639 gpointer *info;
5640
5641 /*
5642 * Use the general version of the rgctx fetch trampoline. It receives a pair of <slot, trampoline> in the rgctx arg reg.
5643 */
5644 if (!addr)
5645 addr = load_function (amodule, "rgctx_fetch_trampoline_general");
5646 info = (void **)mono_domain_alloc0 (mono_get_root_domain (), sizeof (gpointer) * 2);
5647 info [0] = GUINT_TO_POINTER (slot);
5648 info [1] = mono_create_specific_trampoline (GUINT_TO_POINTER (slot), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, mono_get_root_domain (), NULL);
5649 code = mono_aot_get_static_rgctx_trampoline (info, addr);
5650 return mono_create_ftnptr (mono_domain_get (), code);
5651 }
5652
5653 symbol = mono_get_rgctx_fetch_trampoline_name (slot);
5654 code = load_function ((MonoAotModule *)mono_defaults.corlib->aot_module, symbol);
5655 g_free (symbol);
5656 /* The caller expects an ftnptr */
5657 return mono_create_ftnptr (mono_domain_get (), code);
5658 }
5659
5660 static void
5661 no_imt_trampoline (void)
5662 {
5663 g_assert_not_reached ();
5664 }
5665
5666 gpointer
5667 mono_aot_get_imt_trampoline (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
5668 {
5669 guint32 got_offset;
5670 gpointer code;
5671 gpointer *buf;
5672 int i, index, real_count;
5673 MonoAotModule *amodule;
5674
5675 if (mono_llvm_only)
5676 return no_imt_trampoline;
5677
5678 real_count = 0;
5679 for (i = 0; i < count; ++i) {
5680 MonoIMTCheckItem *item = imt_entries [i];
5681
5682 if (item->is_equals)
5683 real_count ++;
5684 }
5685
5686 /* Save the entries into an array */
5687 buf = (void **)mono_domain_alloc (domain, (real_count + 1) * 2 * sizeof (gpointer));
5688 index = 0;
5689 for (i = 0; i < count; ++i) {
5690 MonoIMTCheckItem *item = imt_entries [i];
5691
5692 if (!item->is_equals)
5693 continue;
5694
5695 g_assert (item->key);
5696
5697 buf [(index * 2)] = item->key;
5698 if (item->has_target_code) {
5699 gpointer *p = (gpointer *)mono_domain_alloc (domain, sizeof (gpointer));
5700 *p = item->value.target_code;
5701 buf [(index * 2) + 1] = p;
5702 } else {
5703 buf [(index * 2) + 1] = &(vtable->vtable [item->value.vtable_slot]);
5704 }
5705 index ++;
5706 }
5707 buf [(index * 2)] = NULL;
5708 buf [(index * 2) + 1] = fail_tramp;
5709
5710 if (USE_PAGE_TRAMPOLINES) {
5711 code = get_new_imt_trampoline_from_page (buf);
5712 } else {
5713 code = get_numerous_trampoline (MONO_AOT_TRAMP_IMT, 1, &amodule, &got_offset, NULL);
5714
5715 amodule->got [got_offset] = buf;
5716 }
5717
5718 return code;
5719 }
5720
5721 gpointer
5722 mono_aot_get_gsharedvt_arg_trampoline (gpointer arg, gpointer addr)
5723 {
5724 MonoAotModule *amodule;
5725 guint8 *code;
5726 guint32 got_offset;
5727
5728 if (USE_PAGE_TRAMPOLINES) {
5729 code = (guint8 *)get_new_gsharedvt_arg_trampoline_from_page (addr, arg);
5730 } else {
5731 code = (guint8 *)get_numerous_trampoline (MONO_AOT_TRAMP_GSHAREDVT_ARG, 2, &amodule, &got_offset, NULL);
5732
5733 amodule->got [got_offset] = arg;
5734 amodule->got [got_offset + 1] = addr;
5735 }
5736
5737 /* The caller expects an ftnptr */
5738 return mono_create_ftnptr (mono_domain_get (), code);
5739 }
5740
5741 /*
5742 * mono_aot_set_make_unreadable:
5743 *
5744 * Set whenever to make all mmaped memory unreadable. In conjuction with a
5745 * SIGSEGV handler, this is useful to find out which pages the runtime tries to read.
5746 */
5747 void
5748 mono_aot_set_make_unreadable (gboolean unreadable)
5749 {
5750 static int inited;
5751
5752 make_unreadable = unreadable;
5753
5754 if (make_unreadable && !inited) {
5755 mono_counters_register ("AOT: pagefaults", MONO_COUNTER_JIT | MONO_COUNTER_INT, &n_pagefaults);
5756 }
5757 }
5758
5759 typedef struct {
5760 MonoAotModule *module;
5761 guint8 *ptr;
5762 } FindMapUserData;
5763
5764 static void
5765 find_map (gpointer key, gpointer value, gpointer user_data)
5766 {
5767 MonoAotModule *module = (MonoAotModule*)value;
5768 FindMapUserData *data = (FindMapUserData*)user_data;
5769
5770 if (!data->module)
5771 if ((data->ptr >= module->mem_begin) && (data->ptr < module->mem_end))
5772 data->module = module;
5773 }
5774
5775 static MonoAotModule*
5776 find_module_for_addr (void *ptr)
5777 {
5778 FindMapUserData data;
5779
5780 if (!make_unreadable)
5781 return NULL;
5782
5783 data.module = NULL;
5784 data.ptr = (guint8*)ptr;
5785
5786 mono_aot_lock ();
5787 g_hash_table_foreach (aot_modules, (GHFunc)find_map, &data);
5788 mono_aot_unlock ();
5789
5790 return data.module;
5791 }
5792
5793 /*
5794 * mono_aot_is_pagefault:
5795 *
5796 * Should be called from a SIGSEGV signal handler to find out whenever @ptr is
5797 * within memory allocated by this module.
5798 */
5799 gboolean
5800 mono_aot_is_pagefault (void *ptr)
5801 {
5802 if (!make_unreadable)
5803 return FALSE;
5804
5805 /*
5806 * Not signal safe, but SIGSEGV's are synchronous, and
5807 * this is only turned on by a MONO_DEBUG option.
5808 */
5809 return find_module_for_addr (ptr) != NULL;
5810 }
5811
5812 /*
5813 * mono_aot_handle_pagefault:
5814 *
5815 * Handle a pagefault caused by an unreadable page by making it readable again.
5816 */
5817 void
5818 mono_aot_handle_pagefault (void *ptr)
5819 {
5820 #ifndef PLATFORM_WIN32
5821 guint8* start = (guint8*)ROUND_DOWN (((gssize)ptr), mono_pagesize ());
5822 int res;
5823
5824 mono_aot_lock ();
5825 res = mono_mprotect (start, mono_pagesize (), MONO_MMAP_READ|MONO_MMAP_WRITE|MONO_MMAP_EXEC);
5826 g_assert (res == 0);
5827
5828 n_pagefaults ++;
5829 mono_aot_unlock ();
5830 #endif
5831 }
5832
5833 #else
5834 /* AOT disabled */
5835
5836 void
5837 mono_aot_init (void)
5838 {
5839 }
5840
5841 void
5842 mono_aot_cleanup (void)
5843 {
5844 }
5845
5846 guint32
5847 mono_aot_find_method_index (MonoMethod *method)
5848 {
5849 g_assert_not_reached ();
5850 return 0;
5851 }
5852
5853 void
5854 mono_aot_init_llvm_method (gpointer aot_module, guint32 method_index)
5855 {
5856 }
5857
5858 void
5859 mono_aot_init_gshared_method_this (gpointer aot_module, guint32 method_index, MonoObject *this)
5860 {
5861 }
5862
5863 void
5864 mono_aot_init_gshared_method_mrgctx (gpointer aot_module, guint32 method_index, MonoMethodRuntimeGenericContext *rgctx)
5865 {
5866 }
5867
5868 void
5869 mono_aot_init_gshared_method_vtable (gpointer aot_module, guint32 method_index, MonoVTable *vtable)
5870 {
5871 }
5872
5873 gpointer
5874 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
5875 {
5876 return NULL;
5877 }
5878
5879 gpointer
5880 mono_aot_get_method_checked (MonoDomain *domain,
5881 MonoMethod *method, MonoError *error)
5882 {
5883 error_init (error);
5884 return NULL;
5885 }
5886
5887 gboolean
5888 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
5889 {
5890 return FALSE;
5891 }
5892
5893 gboolean
5894 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
5895 {
5896 return FALSE;
5897 }
5898
5899 gboolean
5900 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
5901 {
5902 return FALSE;
5903 }
5904
5905 MonoJitInfo *
5906 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
5907 {
5908 return NULL;
5909 }
5910
5911 gpointer
5912 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token, MonoError *error)
5913 {
5914 error_init (error);
5915 return NULL;
5916 }
5917
5918 guint8*
5919 mono_aot_get_plt_entry (guint8 *code)
5920 {
5921 return NULL;
5922 }
5923
5924 gpointer
5925 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code, MonoError *error)
5926 {
5927 return NULL;
5928 }
5929
5930 void
5931 mono_aot_patch_plt_entry (guint8 *code, guint8 *plt_entry, gpointer *got, mgreg_t *regs, guint8 *addr)
5932 {
5933 }
5934
5935 gpointer
5936 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot, MonoError *error)
5937 {
5938 error_init (error);
5939
5940 return NULL;
5941 }
5942
5943 guint32
5944 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
5945 {
5946 g_assert_not_reached ();
5947
5948 return 0;
5949 }
5950
5951 gpointer
5952 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
5953 {
5954 g_assert_not_reached ();
5955 return NULL;
5956 }
5957
5958 gpointer
5959 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
5960 {
5961 g_assert_not_reached ();
5962 return NULL;
5963 }
5964
5965 gpointer
5966 mono_aot_get_trampoline_full (const char *name, MonoTrampInfo **out_tinfo)
5967 {
5968 g_assert_not_reached ();
5969 return NULL;
5970 }
5971
5972 gpointer
5973 mono_aot_get_trampoline (const char *name)
5974 {
5975 g_assert_not_reached ();
5976 return NULL;
5977 }
5978
5979 gpointer
5980 mono_aot_get_unbox_trampoline (MonoMethod *method)
5981 {
5982 g_assert_not_reached ();
5983 return NULL;
5984 }
5985
5986 gpointer
5987 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
5988 {
5989 g_assert_not_reached ();
5990 return NULL;
5991 }
5992
5993 gpointer
5994 mono_aot_get_imt_trampoline (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
5995 {
5996 g_assert_not_reached ();
5997 return NULL;
5998 }
5999
6000 gpointer
6001 mono_aot_get_gsharedvt_arg_trampoline (gpointer arg, gpointer addr)
6002 {
6003 g_assert_not_reached ();
6004 return NULL;
6005 }
6006
6007 void
6008 mono_aot_set_make_unreadable (gboolean unreadable)
6009 {
6010 }
6011
6012 gboolean
6013 mono_aot_is_pagefault (void *ptr)
6014 {
6015 return FALSE;
6016 }
6017
6018 void
6019 mono_aot_handle_pagefault (void *ptr)
6020 {
6021 }
6022
6023 guint8*
6024 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
6025 {
6026 g_assert_not_reached ();
6027 return NULL;
6028 }
6029
6030 void
6031 mono_aot_register_jit_icall (const char *name, gpointer addr)
6032 {
6033 }
6034
6035 #endif
Mirror of the official Mono project git repository