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2010-04-01 Zoltan Varga <vargaz@gmail.com>
[mono/afaerber.git] / mono / mini / aot-runtime.c
blob327bf27cd9f5b4952c0dfd440287161b634434ac
1 /*
2 * aot-runtime.c: mono Ahead of Time compiler
3 *
4 * Author:
5 * Dietmar Maurer (dietmar@ximian.com)
6 * Zoltan Varga (vargaz@gmail.com)
7 *
8 * (C) 2002 Ximian, Inc.
9 */
10
11 #include "config.h"
12 #include <sys/types.h>
13 #ifdef HAVE_UNISTD_H
14 #include <unistd.h>
15 #endif
16 #include <fcntl.h>
17 #include <string.h>
18 #ifdef HAVE_SYS_MMAN_H
19 #include <sys/mman.h>
20 #endif
21
22 #if HOST_WIN32
23 #include <winsock2.h>
24 #include <windows.h>
25 #endif
26
27 #ifdef HAVE_EXECINFO_H
28 #include <execinfo.h>
29 #endif
30
31 #include <errno.h>
32 #include <sys/stat.h>
33
34 #ifdef HAVE_SYS_WAIT_H
35 #include <sys/wait.h> /* for WIFEXITED, WEXITSTATUS */
36 #endif
37
38 #ifdef HAVE_DL_ITERATE_PHDR
39 #include <link.h>
40 #endif
41
42 #include <mono/metadata/tabledefs.h>
43 #include <mono/metadata/class.h>
44 #include <mono/metadata/object.h>
45 #include <mono/metadata/tokentype.h>
46 #include <mono/metadata/appdomain.h>
47 #include <mono/metadata/debug-helpers.h>
48 #include <mono/metadata/assembly.h>
49 #include <mono/metadata/metadata-internals.h>
50 #include <mono/metadata/marshal.h>
51 #include <mono/metadata/gc-internal.h>
52 #include <mono/metadata/monitor.h>
53 #include <mono/metadata/threads-types.h>
54 #include <mono/utils/mono-logger-internal.h>
55 #include <mono/utils/mono-mmap.h>
56 #include "mono/utils/mono-compiler.h"
57 #include <mono/utils/mono-counters.h>
58
59 #include "mini.h"
60 #include "version.h"
61
62 #ifndef DISABLE_AOT
63
64 #ifdef TARGET_WIN32
65 #define SHARED_EXT ".dll"
66 #elif ((defined(__ppc__) || defined(__powerpc__) || defined(__ppc64__)) || defined(__MACH__)) && !defined(__linux__)
67 #define SHARED_EXT ".dylib"
68 #else
69 #define SHARED_EXT ".so"
70 #endif
71
72 #define ALIGN_PTR_TO(ptr,align) (gpointer)((((gssize)(ptr)) + (align - 1)) & (~(align - 1)))
73 #define ROUND_DOWN(VALUE,SIZE) ((VALUE) & ~((SIZE) - 1))
74
75 typedef struct MonoAotModule {
76 char *aot_name;
77 /* Pointer to the Global Offset Table */
78 gpointer *got;
79 GHashTable *name_cache;
80 GHashTable *extra_methods;
81 /* Maps methods to their code */
82 GHashTable *method_to_code;
83 /* Maps pointers into the method info to the methods themselves */
84 GHashTable *method_ref_to_method;
85 MonoAssemblyName *image_names;
86 char **image_guids;
87 MonoAssembly *assembly;
88 MonoImage **image_table;
89 guint32 image_table_len;
90 gboolean out_of_date;
91 gboolean plt_inited;
92 guint8 *mem_begin;
93 guint8 *mem_end;
94 guint8 *code;
95 guint8 *code_end;
96 guint8 *plt;
97 guint8 *plt_end;
98 guint8 *blob;
99 gint32 *code_offsets;
100 /* This contains <offset, index> pairs sorted by offset */
101 /* This is needed because LLVM emitted methods can be in any order */
102 gint32 *sorted_code_offsets;
103 gint32 sorted_code_offsets_len;
104 guint32 *method_info_offsets;
105 guint32 *got_info_offsets;
106 guint32 *ex_info_offsets;
107 guint32 *class_info_offsets;
108 guint32 *methods_loaded;
109 guint16 *class_name_table;
110 guint32 *extra_method_table;
111 guint32 *extra_method_info_offsets;
112 guint8 *unwind_info;
113
114 /* Points to the GNU .eh_frame_hdr section, if it exists */
115 guint8 *eh_frame_hdr;
116
117 /* Points to the .ARM.exidx section, if it exists */
118 guint8 *arm_exidx;
119 guint32 arm_exidx_size;
120
121 /* Points to the trampolines */
122 guint8 *trampolines [MONO_AOT_TRAMP_NUM];
123 /* The first unused trampoline of each kind */
124 guint32 trampoline_index [MONO_AOT_TRAMP_NUM];
125
126 MonoAotFileInfo info;
127
128 gpointer *globals;
129 MonoDl *sofile;
130 } MonoAotModule;
131
132 static GHashTable *aot_modules;
133 #define mono_aot_lock() EnterCriticalSection (&aot_mutex)
134 #define mono_aot_unlock() LeaveCriticalSection (&aot_mutex)
135 static CRITICAL_SECTION aot_mutex;
136
137 /*
138 * Maps assembly names to the mono_aot_module_<NAME>_info symbols in the
139 * AOT modules registered by mono_aot_register_module ().
140 */
141 static GHashTable *static_aot_modules;
142
143 /*
144 * Maps MonoJitInfo* to the aot module they belong to, this can be different
145 * from ji->method->klass->image's aot module for generic instances.
146 */
147 static GHashTable *ji_to_amodule;
148
149 /*
150 * Whenever to AOT compile loaded assemblies on demand and store them in
151 * a cache under $HOME/.mono/aot-cache.
152 */
153 static gboolean use_aot_cache = FALSE;
154
155 /*
156 * Whenever to spawn a new process to AOT a file or do it in-process. Only relevant if
157 * use_aot_cache is TRUE.
158 */
159 static gboolean spawn_compiler = TRUE;
160
161 /* For debugging */
162 static gint32 mono_last_aot_method = -1;
163
164 static gboolean make_unreadable = FALSE;
165 static guint32 name_table_accesses = 0;
166 static guint32 n_pagefaults = 0;
167
168 /* Used to speed-up find_aot_module () */
169 static gsize aot_code_low_addr = (gssize)-1;
170 static gsize aot_code_high_addr = 0;
171
172 static void
173 init_plt (MonoAotModule *info);
174
175 /*****************************************************/
176 /* AOT RUNTIME */
177 /*****************************************************/
178
179 /*
180 * load_image:
181 *
182 * Load one of the images referenced by AMODULE. Returns NULL if the image is not
183 * found, and sets the loader error if SET_ERROR is TRUE.
184 */
185 static MonoImage *
186 load_image (MonoAotModule *amodule, int index, gboolean set_error)
187 {
188 MonoAssembly *assembly;
189 MonoImageOpenStatus status;
190
191 g_assert (index < amodule->image_table_len);
192
193 if (amodule->image_table [index])
194 return amodule->image_table [index];
195 if (amodule->out_of_date)
196 return NULL;
197
198 assembly = mono_assembly_load (&amodule->image_names [index], NULL, &status);
199 if (!assembly) {
200 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is unusable because dependency %s is not found.\n", amodule->aot_name, amodule->image_names [index].name);
201 amodule->out_of_date = TRUE;
202
203 if (set_error) {
204 char *full_name = mono_stringify_assembly_name (&amodule->image_names [index]);
205 mono_loader_set_error_assembly_load (full_name, FALSE);
206 g_free (full_name);
207 }
208 return NULL;
209 }
210
211 if (strcmp (assembly->image->guid, amodule->image_guids [index])) {
212 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is out of date (Older than dependency %s).\n", amodule->aot_name, amodule->image_names [index].name);
213 amodule->out_of_date = TRUE;
214 return NULL;
215 }
216
217 amodule->image_table [index] = assembly->image;
218 return assembly->image;
219 }
220
221 static inline gint32
222 decode_value (guint8 *ptr, guint8 **rptr)
223 {
224 guint8 b = *ptr;
225 gint32 len;
226
227 if ((b & 0x80) == 0){
228 len = b;
229 ++ptr;
230 } else if ((b & 0x40) == 0){
231 len = ((b & 0x3f) << 8 | ptr [1]);
232 ptr += 2;
233 } else if (b != 0xff) {
234 len = ((b & 0x1f) << 24) |
235 (ptr [1] << 16) |
236 (ptr [2] << 8) |
237 ptr [3];
238 ptr += 4;
239 }
240 else {
241 len = (ptr [1] << 24) | (ptr [2] << 16) | (ptr [3] << 8) | ptr [4];
242 ptr += 5;
243 }
244 if (rptr)
245 *rptr = ptr;
246
247 //printf ("DECODE: %d.\n", len);
248 return len;
249 }
250
251 /*
252 * mono_aot_get_method:
253 *
254 * Decode an offset table emitted by emit_offset_table (), returning the INDEXth
255 * entry.
256 */
257 static guint32
258 mono_aot_get_offset (guint32 *table, int index)
259 {
260 int i, group, ngroups, index_entry_size;
261 int start_offset, offset, noffsets, group_size;
262 guint8 *data_start, *p;
263 guint32 *index32 = NULL;
264 guint16 *index16 = NULL;
265
266 noffsets = table [0];
267 group_size = table [1];
268 ngroups = table [2];
269 index_entry_size = table [3];
270 group = index / group_size;
271
272 if (index_entry_size == 2) {
273 index16 = (guint16*)&table [4];
274 data_start = (guint8*)&index16 [ngroups];
275 p = data_start + index16 [group];
276 } else {
277 index32 = (guint32*)&table [4];
278 data_start = (guint8*)&index32 [ngroups];
279 p = data_start + index32 [group];
280 }
281
282 /* offset will contain the value of offsets [group * group_size] */
283 offset = start_offset = decode_value (p, &p);
284 for (i = group * group_size + 1; i <= index; ++i) {
285 offset += decode_value (p, &p);
286 }
287
288 //printf ("Offset lookup: %d -> %d, start=%d, p=%d\n", index, offset, start_offset, table [3 + group]);
289
290 return offset;
291 }
292
293 static MonoMethod*
294 decode_method_ref_2 (MonoAotModule *module, guint8 *buf, guint8 **endbuf);
295
296 static MonoClass*
297 decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf);
298
299 static MonoGenericInst*
300 decode_generic_inst (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
301 {
302 int type_argc, i;
303 MonoType **type_argv;
304 MonoGenericInst *inst;
305 guint8 *p = buf;
306
307 type_argc = decode_value (p, &p);
308 type_argv = g_new0 (MonoType*, type_argc);
309
310 for (i = 0; i < type_argc; ++i) {
311 MonoClass *pclass = decode_klass_ref (module, p, &p);
312 if (!pclass) {
313 g_free (type_argv);
314 return NULL;
315 }
316 type_argv [i] = &pclass->byval_arg;
317 }
318
319 inst = mono_metadata_get_generic_inst (type_argc, type_argv);
320 g_free (type_argv);
321
322 *endbuf = p;
323
324 return inst;
325 }
326
327 static gboolean
328 decode_generic_context (MonoAotModule *module, MonoGenericContext *ctx, guint8 *buf, guint8 **endbuf)
329 {
330 gboolean has_class_inst, has_method_inst;
331 guint8 *p = buf;
332
333 has_class_inst = decode_value (p, &p);
334 if (has_class_inst) {
335 ctx->class_inst = decode_generic_inst (module, p, &p);
336 if (!ctx->class_inst)
337 return FALSE;
338 }
339 has_method_inst = decode_value (p, &p);
340 if (has_method_inst) {
341 ctx->method_inst = decode_generic_inst (module, p, &p);
342 if (!ctx->method_inst)
343 return FALSE;
344 }
345
346 *endbuf = p;
347 return TRUE;
348 }
349
350 static MonoClass*
351 decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
352 {
353 MonoImage *image;
354 MonoClass *klass, *eklass;
355 guint32 token, rank;
356 guint8 *p = buf;
357
358 token = decode_value (p, &p);
359 if (token == 0) {
360 *endbuf = p;
361 return NULL;
362 }
363 if (mono_metadata_token_table (token) == 0) {
364 image = load_image (module, decode_value (p, &p), TRUE);
365 if (!image)
366 return NULL;
367 klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF + token);
368 } else if (mono_metadata_token_table (token) == MONO_TABLE_TYPESPEC) {
369 if (token == MONO_TOKEN_TYPE_SPEC) {
370 MonoTypeEnum type = decode_value (p, &p);
371
372 if (type == MONO_TYPE_GENERICINST) {
373 MonoClass *gclass;
374 MonoGenericContext ctx;
375 MonoType *type;
376
377 gclass = decode_klass_ref (module, p, &p);
378 if (!gclass)
379 return NULL;
380 g_assert (gclass->generic_container);
381
382 memset (&ctx, 0, sizeof (ctx));
383 ctx.class_inst = decode_generic_inst (module, p, &p);
384 if (!ctx.class_inst)
385 return NULL;
386 type = mono_class_inflate_generic_type (&gclass->byval_arg, &ctx);
387 klass = mono_class_from_mono_type (type);
388 mono_metadata_free_type (type);
389 } else if ((type == MONO_TYPE_VAR) || (type == MONO_TYPE_MVAR)) {
390 MonoType *t;
391 MonoGenericContainer *container;
392
393 int num = decode_value (p, &p);
394 gboolean is_method = decode_value (p, &p);
395
396 if (is_method) {
397 MonoMethod *method_def;
398 g_assert (type == MONO_TYPE_MVAR);
399 method_def = decode_method_ref_2 (module, p, &p);
400 if (!method_def)
401 return NULL;
402
403 container = mono_method_get_generic_container (method_def);
404 } else {
405 MonoClass *class_def;
406 g_assert (type == MONO_TYPE_VAR);
407 class_def = decode_klass_ref (module, p, &p);
408 if (!class_def)
409 return NULL;
410
411 container = class_def->generic_container;
412 }
413
414 g_assert (container);
415
416 // FIXME: Memory management
417 t = g_new0 (MonoType, 1);
418 t->type = type;
419 t->data.generic_param = mono_generic_container_get_param (container, num);
420
421 // FIXME: Maybe use types directly to avoid
422 // the overhead of creating MonoClass-es
423 klass = mono_class_from_mono_type (t);
424
425 g_free (t);
426 } else {
427 g_assert_not_reached ();
428 }
429 } else {
430 image = load_image (module, decode_value (p, &p), TRUE);
431 if (!image)
432 return NULL;
433 klass = mono_class_get (image, token);
434 }
435 } else if (token == MONO_TOKEN_TYPE_DEF) {
436 /* Array */
437 image = load_image (module, decode_value (p, &p), TRUE);
438 if (!image)
439 return NULL;
440 rank = decode_value (p, &p);
441 eklass = decode_klass_ref (module, p, &p);
442 klass = mono_array_class_get (eklass, rank);
443 } else {
444 g_assert_not_reached ();
445 }
446 g_assert (klass);
447
448 *endbuf = p;
449 return klass;
450 }
451
452 static MonoClassField*
453 decode_field_info (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
454 {
455 MonoClass *klass = decode_klass_ref (module, buf, &buf);
456 guint32 token;
457 guint8 *p = buf;
458
459 if (!klass)
460 return NULL;
461
462 token = MONO_TOKEN_FIELD_DEF + decode_value (p, &p);
463
464 *endbuf = p;
465
466 return mono_class_get_field (klass, token);
467 }
468
469 /*
470 * can_method_ref_match_method:
471 *
472 * Determine if calling decode_method_ref_2 on P could return the same method as
473 * METHOD. This is an optimization to avoid calling decode_method_ref_2 () which
474 * would create MonoMethods which are not needed etc.
475 */
476 static gboolean
477 can_method_ref_match_method (MonoAotModule *module, guint8 *buf, MonoMethod *method)
478 {
479 guint8 *p = buf;
480 guint32 image_index, value;
481
482 /* Keep this in sync with decode_method_ref () */
483 value = decode_value (p, &p);
484 image_index = value >> 24;
485
486 if (image_index == MONO_AOT_METHODREF_WRAPPER) {
487 guint32 wrapper_type;
488
489 if (!method->wrapper_type)
490 return FALSE;
491
492 wrapper_type = decode_value (p, &p);
493
494 if (method->wrapper_type != wrapper_type)
495 return FALSE;
496 } else if (image_index == MONO_AOT_METHODREF_WRAPPER_NAME) {
497 return FALSE;
498 } else if (image_index < MONO_AOT_METHODREF_MIN || image_index == MONO_AOT_METHODREF_METHODSPEC || image_index == MONO_AOT_METHODREF_GINST) {
499 if (method->wrapper_type)
500 return FALSE;
501 }
502
503 return TRUE;
504 }
505
506 /*
507 * decode_method_ref:
508 *
509 * Decode a method reference, and return its image and token. This avoids loading
510 * metadata for the method if the caller does not need it. If the method has no token,
511 * then it is loaded from metadata and METHOD is set to the method instance.
512 */
513 static MonoImage*
514 decode_method_ref (MonoAotModule *module, guint32 *token, MonoMethod **method, gboolean *no_aot_trampoline, guint8 *buf, guint8 **endbuf)
515 {
516 guint32 image_index, value;
517 MonoImage *image = NULL;
518 guint8 *p = buf;
519
520 if (method)
521 *method = NULL;
522 if (no_aot_trampoline)
523 *no_aot_trampoline = FALSE;
524
525 value = decode_value (p, &p);
526 image_index = value >> 24;
527
528 if (image_index == MONO_AOT_METHODREF_NO_AOT_TRAMPOLINE) {
529 if (no_aot_trampoline)
530 *no_aot_trampoline = TRUE;
531 value = decode_value (p, &p);
532 image_index = value >> 24;
533 }
534
535 if (image_index == MONO_AOT_METHODREF_WRAPPER) {
536 guint32 wrapper_type;
537
538 wrapper_type = decode_value (p, &p);
539
540 /* Doesn't matter */
541 image = mono_defaults.corlib;
542
543 switch (wrapper_type) {
544 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK: {
545 MonoMethod *m = decode_method_ref_2 (module, p, &p);
546
547 if (!m)
548 return NULL;
549 mono_class_init (m->klass);
550 *method = mono_marshal_get_remoting_invoke_with_check (m);
551 break;
552 }
553 case MONO_WRAPPER_PROXY_ISINST: {
554 MonoClass *klass = decode_klass_ref (module, p, &p);
555 if (!klass)
556 return NULL;
557 *method = mono_marshal_get_proxy_cancast (klass);
558 break;
559 }
560 case MONO_WRAPPER_LDFLD:
561 case MONO_WRAPPER_LDFLDA:
562 case MONO_WRAPPER_STFLD:
563 case MONO_WRAPPER_ISINST: {
564 MonoClass *klass = decode_klass_ref (module, p, &p);
565 if (!klass)
566 return NULL;
567 if (wrapper_type == MONO_WRAPPER_LDFLD)
568 *method = mono_marshal_get_ldfld_wrapper (&klass->byval_arg);
569 else if (wrapper_type == MONO_WRAPPER_LDFLDA)
570 *method = mono_marshal_get_ldflda_wrapper (&klass->byval_arg);
571 else if (wrapper_type == MONO_WRAPPER_STFLD)
572 *method = mono_marshal_get_stfld_wrapper (&klass->byval_arg);
573 else if (wrapper_type == MONO_WRAPPER_ISINST)
574 *method = mono_marshal_get_isinst (klass);
575 else
576 g_assert_not_reached ();
577 break;
578 }
579 case MONO_WRAPPER_LDFLD_REMOTE:
580 *method = mono_marshal_get_ldfld_remote_wrapper (NULL);
581 break;
582 case MONO_WRAPPER_STFLD_REMOTE:
583 *method = mono_marshal_get_stfld_remote_wrapper (NULL);
584 break;
585 case MONO_WRAPPER_ALLOC: {
586 int atype = decode_value (p, &p);
587
588 *method = mono_gc_get_managed_allocator_by_type (atype);
589 break;
590 }
591 case MONO_WRAPPER_WRITE_BARRIER:
592 *method = mono_gc_get_write_barrier ();
593 break;
594 case MONO_WRAPPER_STELEMREF:
595 *method = mono_marshal_get_stelemref ();
596 break;
597 case MONO_WRAPPER_SYNCHRONIZED: {
598 MonoMethod *m = decode_method_ref_2 (module, p, &p);
599
600 if (!m)
601 return NULL;
602 *method = mono_marshal_get_synchronized_wrapper (m);
603 break;
604 }
605 case MONO_WRAPPER_UNKNOWN: {
606 MonoMethodDesc *desc;
607 MonoMethod *orig_method;
608 int subtype = decode_value (p, &p);
609
610 if (subtype == MONO_AOT_WRAPPER_MONO_ENTER)
611 desc = mono_method_desc_new ("Monitor:Enter", FALSE);
612 else if (subtype == MONO_AOT_WRAPPER_MONO_EXIT)
613 desc = mono_method_desc_new ("Monitor:Exit", FALSE);
614 else
615 g_assert_not_reached ();
616 orig_method = mono_method_desc_search_in_class (desc, mono_defaults.monitor_class);
617 g_assert (orig_method);
618 mono_method_desc_free (desc);
619 *method = mono_monitor_get_fast_path (orig_method);
620 break;
621 }
622 case MONO_WRAPPER_RUNTIME_INVOKE: {
623 /* Direct wrapper */
624 MonoMethod *m = decode_method_ref_2 (module, p, &p);
625
626 if (!m)
627 return NULL;
628 *method = mono_marshal_get_runtime_invoke (m, FALSE);
629 break;
630 }
631 case MONO_WRAPPER_MANAGED_TO_MANAGED: {
632 int subtype = decode_value (p, &p);
633
634 if (subtype == MONO_AOT_WRAPPER_ELEMENT_ADDR) {
635 int rank = decode_value (p, &p);
636 int elem_size = decode_value (p, &p);
637
638 *method = mono_marshal_get_array_address (rank, elem_size);
639 } else {
640 g_assert_not_reached ();
641 }
642 break;
643 }
644 default:
645 g_assert_not_reached ();
646 }
647 } else if (image_index == MONO_AOT_METHODREF_WRAPPER_NAME) {
648 /* Can't decode these */
649 g_assert_not_reached ();
650 } else if (image_index == MONO_AOT_METHODREF_METHODSPEC) {
651 image_index = decode_value (p, &p);
652 *token = decode_value (p, &p);
653
654 image = load_image (module, image_index, TRUE);
655 if (!image)
656 return NULL;
657 } else if (image_index == MONO_AOT_METHODREF_GINST) {
658 MonoClass *klass;
659 MonoGenericContext ctx;
660
661 /*
662 * These methods do not have a token which resolves them, so we
663 * resolve them immediately.
664 */
665 klass = decode_klass_ref (module, p, &p);
666 if (!klass)
667 return NULL;
668
669 image_index = decode_value (p, &p);
670 *token = decode_value (p, &p);
671
672 image = load_image (module, image_index, TRUE);
673 if (!image)
674 return NULL;
675
676 *method = mono_get_method_full (image, *token, NULL, NULL);
677 if (!(*method))
678 return NULL;
679
680 memset (&ctx, 0, sizeof (ctx));
681
682 if (FALSE && klass->generic_class) {
683 ctx.class_inst = klass->generic_class->context.class_inst;
684 ctx.method_inst = NULL;
685
686 *method = mono_class_inflate_generic_method_full (*method, klass, &ctx);
687 }
688
689 memset (&ctx, 0, sizeof (ctx));
690
691 if (!decode_generic_context (module, &ctx, p, &p))
692 return NULL;
693
694 *method = mono_class_inflate_generic_method_full (*method, klass, &ctx);
695 } else if (image_index == MONO_AOT_METHODREF_ARRAY) {
696 MonoClass *klass;
697 int method_type;
698
699 klass = decode_klass_ref (module, p, &p);
700 if (!klass)
701 return NULL;
702 method_type = decode_value (p, &p);
703 *token = 0;
704 switch (method_type) {
705 case 0:
706 *method = mono_class_get_method_from_name (klass, ".ctor", klass->rank);
707 break;
708 case 1:
709 *method = mono_class_get_method_from_name (klass, ".ctor", klass->rank * 2);
710 break;
711 case 2:
712 *method = mono_class_get_method_from_name (klass, "Get", -1);
713 break;
714 case 3:
715 *method = mono_class_get_method_from_name (klass, "Address", -1);
716 break;
717 case 4:
718 *method = mono_class_get_method_from_name (klass, "Set", -1);
719 break;
720 default:
721 g_assert_not_reached ();
722 }
723 } else {
724 g_assert (image_index < MONO_AOT_METHODREF_MIN);
725 *token = MONO_TOKEN_METHOD_DEF | (value & 0xffffff);
726
727 image = load_image (module, image_index, TRUE);
728 if (!image)
729 return NULL;
730 }
731
732 *endbuf = p;
733
734 return image;
735 }
736
737 /*
738 * decode_method_ref_2:
739 *
740 * Similar to decode_method_ref, but resolve and return the method itself.
741 */
742 static MonoMethod*
743 decode_method_ref_2 (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
744 {
745 MonoMethod *method;
746 guint32 token;
747 MonoImage *image = decode_method_ref (module, &token, &method, NULL, buf, endbuf);
748
749 if (method)
750 return method;
751 if (!image)
752 return NULL;
753 method = mono_get_method (image, token, NULL);
754 return method;
755 }
756
757 G_GNUC_UNUSED
758 static void
759 make_writable (guint8* addr, guint32 len)
760 {
761 guint8 *page_start;
762 int pages, err;
763
764 if (mono_aot_only)
765 g_error ("Attempt to make AOT memory writable while running in aot-only mode.\n");
766
767 page_start = (guint8 *) (((gssize) (addr)) & ~ (mono_pagesize () - 1));
768 pages = (addr + len - page_start + mono_pagesize () - 1) / mono_pagesize ();
769
770 err = mono_mprotect (page_start, pages * mono_pagesize (), MONO_MMAP_READ | MONO_MMAP_WRITE | MONO_MMAP_EXEC);
771 g_assert (err == 0);
772 }
773
774 static void
775 create_cache_structure (void)
776 {
777 const char *home;
778 char *tmp;
779 int err;
780
781 home = g_get_home_dir ();
782 if (!home)
783 return;
784
785 tmp = g_build_filename (home, ".mono", NULL);
786 if (!g_file_test (tmp, G_FILE_TEST_IS_DIR)) {
787 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT creating directory %s", tmp);
788 #ifdef HOST_WIN32
789 err = mkdir (tmp);
790 #else
791 err = mkdir (tmp, 0777);
792 #endif
793 if (err) {
794 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed: %s", g_strerror (errno));
795 g_free (tmp);
796 return;
797 }
798 }
799 g_free (tmp);
800 tmp = g_build_filename (home, ".mono", "aot-cache", NULL);
801 if (!g_file_test (tmp, G_FILE_TEST_IS_DIR)) {
802 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT creating directory %s", tmp);
803 #ifdef HOST_WIN32
804 err = mkdir (tmp);
805 #else
806 err = mkdir (tmp, 0777);
807 #endif
808 if (err) {
809 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed: %s", g_strerror (errno));
810 g_free (tmp);
811 return;
812 }
813 }
814 g_free (tmp);
815 }
816
817 /*
818 * load_aot_module_from_cache:
819 *
820 * Experimental code to AOT compile loaded assemblies on demand.
821 *
822 * FIXME:
823 * - Add environment variable MONO_AOT_CACHE_OPTIONS
824 * - Add options for controlling the cache size
825 * - Handle full cache by deleting old assemblies lru style
826 * - Add options for excluding assemblies during development
827 * - Maybe add a threshold after an assembly is AOT compiled
828 * - invoking a new mono process is a security risk
829 * - recompile the AOT module if one of its dependencies changes
830 */
831 static MonoDl*
832 load_aot_module_from_cache (MonoAssembly *assembly, char **aot_name)
833 {
834 char *fname, *cmd, *tmp2, *aot_options;
835 const char *home;
836 MonoDl *module;
837 gboolean res;
838 gchar *out, *err;
839 gint exit_status;
840
841 *aot_name = NULL;
842
843 if (assembly->image->dynamic)
844 return NULL;
845
846 create_cache_structure ();
847
848 home = g_get_home_dir ();
849
850 tmp2 = g_strdup_printf ("%s-%s%s", assembly->image->assembly_name, assembly->image->guid, SHARED_EXT);
851 fname = g_build_filename (home, ".mono", "aot-cache", tmp2, NULL);
852 *aot_name = fname;
853 g_free (tmp2);
854
855 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT trying to load from cache: '%s'.", fname);
856 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
857
858 if (!module) {
859 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT not found.");
860
861 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT precompiling assembly '%s'... ", assembly->image->name);
862
863 aot_options = g_strdup_printf ("outfile=%s", fname);
864
865 if (spawn_compiler) {
866 /* FIXME: security */
867 /* FIXME: Has to pass the assembly loading path to the child process */
868 cmd = g_strdup_printf ("mono -O=all --aot=%s %s", aot_options, assembly->image->name);
869
870 res = g_spawn_command_line_sync (cmd, &out, &err, &exit_status, NULL);
871
872 #if !defined(HOST_WIN32) && !defined(__ppc__) && !defined(__ppc64__) && !defined(__powerpc__)
873 if (res) {
874 if (!WIFEXITED (exit_status) && (WEXITSTATUS (exit_status) == 0))
875 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT failed: %s.", err);
876 else
877 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT succeeded.");
878 g_free (out);
879 g_free (err);
880 }
881 #endif
882 g_free (cmd);
883 } else {
884 res = mono_compile_assembly (assembly, mono_parse_default_optimizations (NULL), aot_options);
885 if (!res) {
886 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT failed.");
887 } else {
888 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT succeeded.");
889 }
890 }
891
892 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
893
894 g_free (aot_options);
895 }
896
897 return module;
898 }
899
900 static void
901 find_symbol (MonoDl *module, gpointer *globals, const char *name, gpointer *value)
902 {
903 if (globals) {
904 int global_index;
905 guint16 *table, *entry;
906 guint16 table_size;
907 guint32 hash;
908
909 /* The first entry points to the hash */
910 table = globals [0];
911 globals ++;
912
913 table_size = table [0];
914 table ++;
915
916 hash = mono_metadata_str_hash (name) % table_size;
917
918 entry = &table [hash * 2];
919
920 /* Search the hash for the index into the globals table */
921 global_index = -1;
922 while (entry [0] != 0) {
923 guint32 index = entry [0] - 1;
924 guint32 next = entry [1];
925
926 //printf ("X: %s %s\n", (char*)globals [index * 2], name);
927
928 if (!strcmp (globals [index * 2], name)) {
929 global_index = index;
930 break;
931 }
932
933 if (next != 0) {
934 entry = &table [next * 2];
935 } else {
936 break;
937 }
938 }
939
940 if (global_index != -1)
941 *value = globals [global_index * 2 + 1];
942 else
943 *value = NULL;
944 } else {
945 char *err = mono_dl_symbol (module, name, value);
946
947 if (err)
948 g_free (err);
949 }
950 }
951
952 #ifndef SHT_ARM_EXIDX
953 #define SHT_ARM_EXIDX 0x70000001
954 #endif
955
956 #if defined(HAVE_DL_ITERATE_PHDR) && defined(PT_GNU_EH_FRAME)
957 static int
958 dl_callback (struct dl_phdr_info *info, size_t size, void *data)
959 {
960 int j;
961 MonoAotModule *amodule = data;
962
963 if (!strcmp (amodule->aot_name, info->dlpi_name)) {
964 for (j = 0; j < info->dlpi_phnum; j++) {
965 if (info->dlpi_phdr [j].p_type == PT_GNU_EH_FRAME)
966 amodule->eh_frame_hdr = (guint8*)(info->dlpi_addr + info->dlpi_phdr [j].p_vaddr);
967 if (info->dlpi_phdr [j].p_type == SHT_ARM_EXIDX) {
968 amodule->arm_exidx = (guint8*)(info->dlpi_addr + info->dlpi_phdr [j].p_vaddr);
969 amodule->arm_exidx_size = info->dlpi_phdr [j].p_filesz;
970 }
971 }
972 return 1;
973 } else {
974 return 0;
975 }
976 }
977 #endif
978
979 static void
980 load_aot_module (MonoAssembly *assembly, gpointer user_data)
981 {
982 char *aot_name;
983 MonoAotModule *amodule;
984 MonoDl *sofile;
985 gboolean usable = TRUE;
986 char *saved_guid = NULL;
987 char *aot_version = NULL;
988 char *runtime_version, *build_info;
989 char *opt_flags = NULL;
990 gpointer *globals;
991 gboolean full_aot = FALSE;
992 MonoAotFileInfo *file_info = NULL;
993 int i;
994 gpointer *got_addr;
995
996 if (mono_compile_aot)
997 return;
998
999 if (assembly->image->aot_module)
1000 /*
1001 * Already loaded. This can happen because the assembly loading code might invoke
1002 * the assembly load hooks multiple times for the same assembly.
1003 */
1004 return;
1005
1006 if (assembly->image->dynamic)
1007 return;
1008
1009 if (mono_security_get_mode () == MONO_SECURITY_MODE_CAS)
1010 return;
1011
1012 mono_aot_lock ();
1013 if (static_aot_modules)
1014 globals = g_hash_table_lookup (static_aot_modules, assembly->aname.name);
1015 else
1016 globals = NULL;
1017 mono_aot_unlock ();
1018
1019 if (globals) {
1020 /* Statically linked AOT module */
1021 sofile = NULL;
1022 aot_name = g_strdup_printf ("%s", assembly->aname.name);
1023 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "Found statically linked AOT module '%s'.\n", aot_name);
1024 } else {
1025 if (use_aot_cache)
1026 sofile = load_aot_module_from_cache (assembly, &aot_name);
1027 else {
1028 char *err;
1029 aot_name = g_strdup_printf ("%s%s", assembly->image->name, SHARED_EXT);
1030
1031 sofile = mono_dl_open (aot_name, MONO_DL_LAZY, &err);
1032
1033 if (!sofile) {
1034 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed to load AOT module %s: %s\n", aot_name, err);
1035 g_free (err);
1036 }
1037 }
1038 }
1039
1040 if (!sofile && !globals) {
1041 if (mono_aot_only) {
1042 fprintf (stderr, "Failed to load AOT module '%s' in aot-only mode.\n", aot_name);
1043 exit (1);
1044 }
1045 g_free (aot_name);
1046 return;
1047 }
1048
1049 find_symbol (sofile, globals, "mono_assembly_guid", (gpointer *) &saved_guid);
1050 find_symbol (sofile, globals, "mono_aot_version", (gpointer *) &aot_version);
1051 find_symbol (sofile, globals, "mono_aot_opt_flags", (gpointer *)&opt_flags);
1052 find_symbol (sofile, globals, "mono_runtime_version", (gpointer *)&runtime_version);
1053 find_symbol (sofile, globals, "mono_aot_got_addr", (gpointer *)&got_addr);
1054
1055 if (!aot_version || strcmp (aot_version, MONO_AOT_FILE_VERSION)) {
1056 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s has wrong file format version (expected %s got %s)\n", aot_name, MONO_AOT_FILE_VERSION, aot_version);
1057 usable = FALSE;
1058 }
1059 else {
1060 if (!saved_guid || strcmp (assembly->image->guid, saved_guid)) {
1061 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is out of date.\n", aot_name);
1062 usable = FALSE;
1063 }
1064 }
1065
1066 build_info = mono_get_runtime_build_info ();
1067 if (!runtime_version || ((strlen (runtime_version) > 0 && strcmp (runtime_version, build_info)))) {
1068 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is compiled against runtime version '%s' while this runtime has version '%s'.\n", aot_name, runtime_version, build_info);
1069 usable = FALSE;
1070 }
1071 g_free (build_info);
1072
1073 find_symbol (sofile, globals, "mono_aot_file_info", (gpointer*)&file_info);
1074 g_assert (file_info);
1075
1076 full_aot = ((MonoAotFileInfo*)file_info)->flags & MONO_AOT_FILE_FLAG_FULL_AOT;
1077
1078 if (mono_aot_only && !full_aot) {
1079 fprintf (stderr, "Can't use AOT image '%s' in aot-only mode because it is not compiled with --aot=full.\n", aot_name);
1080 exit (1);
1081 }
1082 if (!mono_aot_only && full_aot) {
1083 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is compiled with --aot=full.\n", aot_name);
1084 usable = FALSE;
1085 }
1086
1087 if ((((MonoAotFileInfo*)file_info)->flags & MONO_AOT_FILE_FLAG_WITH_LLVM) && !mono_use_llvm) {
1088 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is compiled with LLVM.\n", aot_name);
1089 usable = FALSE;
1090 }
1091
1092 if (!usable) {
1093 if (mono_aot_only) {
1094 fprintf (stderr, "Failed to load AOT module '%s' while running in aot-only mode.\n", aot_name);
1095 exit (1);
1096 }
1097 g_free (aot_name);
1098 if (sofile)
1099 mono_dl_close (sofile);
1100 assembly->image->aot_module = NULL;
1101 return;
1102 }
1103
1104 amodule = g_new0 (MonoAotModule, 1);
1105 amodule->aot_name = aot_name;
1106 amodule->assembly = assembly;
1107
1108 memcpy (&amodule->info, file_info, sizeof (*file_info));
1109
1110 amodule->got = *got_addr;
1111 amodule->got [0] = assembly->image;
1112 amodule->globals = globals;
1113 amodule->sofile = sofile;
1114 amodule->method_to_code = g_hash_table_new (mono_aligned_addr_hash, NULL);
1115
1116 /* Read image table */
1117 {
1118 guint32 table_len, i;
1119 char *table = NULL;
1120
1121 find_symbol (sofile, globals, "mono_image_table", (gpointer *)&table);
1122 g_assert (table);
1123
1124 table_len = *(guint32*)table;
1125 table += sizeof (guint32);
1126 amodule->image_table = g_new0 (MonoImage*, table_len);
1127 amodule->image_names = g_new0 (MonoAssemblyName, table_len);
1128 amodule->image_guids = g_new0 (char*, table_len);
1129 amodule->image_table_len = table_len;
1130 for (i = 0; i < table_len; ++i) {
1131 MonoAssemblyName *aname = &(amodule->image_names [i]);
1132
1133 aname->name = g_strdup (table);
1134 table += strlen (table) + 1;
1135 amodule->image_guids [i] = g_strdup (table);
1136 table += strlen (table) + 1;
1137 if (table [0] != 0)
1138 aname->culture = g_strdup (table);
1139 table += strlen (table) + 1;
1140 memcpy (aname->public_key_token, table, strlen (table) + 1);
1141 table += strlen (table) + 1;
1142
1143 table = ALIGN_PTR_TO (table, 8);
1144 aname->flags = *(guint32*)table;
1145 table += 4;
1146 aname->major = *(guint32*)table;
1147 table += 4;
1148 aname->minor = *(guint32*)table;
1149 table += 4;
1150 aname->build = *(guint32*)table;
1151 table += 4;
1152 aname->revision = *(guint32*)table;
1153 table += 4;
1154 }
1155 }
1156
1157 /* Read method and method_info tables */
1158 find_symbol (sofile, globals, "code_offsets", (gpointer*)&amodule->code_offsets);
1159 find_symbol (sofile, globals, "methods", (gpointer*)&amodule->code);
1160 find_symbol (sofile, globals, "methods_end", (gpointer*)&amodule->code_end);
1161 find_symbol (sofile, globals, "method_info_offsets", (gpointer*)&amodule->method_info_offsets);
1162 find_symbol (sofile, globals, "ex_info_offsets", (gpointer*)&amodule->ex_info_offsets);
1163 find_symbol (sofile, globals, "blob", (gpointer*)&amodule->blob);
1164 find_symbol (sofile, globals, "class_info_offsets", (gpointer*)&amodule->class_info_offsets);
1165 find_symbol (sofile, globals, "class_name_table", (gpointer *)&amodule->class_name_table);
1166 find_symbol (sofile, globals, "extra_method_table", (gpointer *)&amodule->extra_method_table);
1167 find_symbol (sofile, globals, "extra_method_info_offsets", (gpointer *)&amodule->extra_method_info_offsets);
1168 find_symbol (sofile, globals, "got_info_offsets", (gpointer*)&amodule->got_info_offsets);
1169 find_symbol (sofile, globals, "specific_trampolines", (gpointer*)&(amodule->trampolines [MONO_AOT_TRAMP_SPECIFIC]));
1170 find_symbol (sofile, globals, "static_rgctx_trampolines", (gpointer*)&(amodule->trampolines [MONO_AOT_TRAMP_STATIC_RGCTX]));
1171 find_symbol (sofile, globals, "imt_thunks", (gpointer*)&(amodule->trampolines [MONO_AOT_TRAMP_IMT_THUNK]));
1172 find_symbol (sofile, globals, "unwind_info", (gpointer)&amodule->unwind_info);
1173 find_symbol (sofile, globals, "mem_end", (gpointer*)&amodule->mem_end);
1174
1175 amodule->mem_begin = amodule->code;
1176
1177 find_symbol (sofile, globals, "plt", (gpointer*)&amodule->plt);
1178 find_symbol (sofile, globals, "plt_end", (gpointer*)&amodule->plt_end);
1179
1180 if (make_unreadable) {
1181 #ifndef TARGET_WIN32
1182 guint8 *addr;
1183 guint8 *page_start, *page_end;
1184 int err, len;
1185
1186 addr = amodule->mem_begin;
1187 len = amodule->mem_end - amodule->mem_begin;
1188
1189 /* Round down in both directions to avoid modifying data which is not ours */
1190 page_start = (guint8 *) (((gssize) (addr)) & ~ (mono_pagesize () - 1)) + mono_pagesize ();
1191 page_end = (guint8 *) (((gssize) (addr + len)) & ~ (mono_pagesize () - 1));
1192 if (page_end > page_start) {
1193 err = mono_mprotect (page_start, (page_end - page_start), MONO_MMAP_NONE);
1194 g_assert (err == 0);
1195 }
1196 #endif
1197 }
1198
1199 mono_aot_lock ();
1200
1201 aot_code_low_addr = MIN (aot_code_low_addr, (gsize)amodule->code);
1202 aot_code_high_addr = MAX (aot_code_high_addr, (gsize)amodule->code_end);
1203
1204 g_hash_table_insert (aot_modules, assembly, amodule);
1205 mono_aot_unlock ();
1206
1207 mono_jit_info_add_aot_module (assembly->image, amodule->code, amodule->code_end);
1208
1209 assembly->image->aot_module = amodule;
1210
1211 #if defined(HAVE_DL_ITERATE_PHDR) && defined(PT_GNU_EH_FRAME)
1212 /* Lookup the address of the .eh_frame_hdr () section if available */
1213 dl_iterate_phdr (dl_callback, amodule);
1214 #endif
1215
1216 if (mono_aot_only) {
1217 if (mono_defaults.corlib) {
1218 /* The second got slot contains the mscorlib got addr */
1219 MonoAotModule *mscorlib_amodule = mono_defaults.corlib->aot_module;
1220
1221 amodule->got [1] = mscorlib_amodule->got;
1222 } else {
1223 amodule->got [1] = amodule->got;
1224 }
1225 }
1226
1227 /*
1228 * Since we store methoddef and classdef tokens when referring to methods/classes in
1229 * referenced assemblies, we depend on the exact versions of the referenced assemblies.
1230 * MS calls this 'hard binding'. This means we have to load all referenced assemblies
1231 * non-lazily, since we can't handle out-of-date errors later.
1232 * The cached class info also depends on the exact assemblies.
1233 */
1234 for (i = 0; i < amodule->image_table_len; ++i)
1235 load_image (amodule, i, FALSE);
1236
1237 if (amodule->out_of_date) {
1238 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT Module %s is unusable because a dependency is out-of-date.\n", assembly->image->name);
1239 if (mono_aot_only) {
1240 fprintf (stderr, "Failed to load AOT module '%s' while running in aot-only mode because a dependency cannot be found or it is out of date.\n", aot_name);
1241 exit (1);
1242 }
1243 }
1244 else
1245 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT loaded AOT Module for %s.\n", assembly->image->name);
1246 }
1247
1248 /*
1249 * mono_aot_register_globals:
1250 *
1251 * This is called by the ctor function in AOT images compiled with the
1252 * 'no-dlsym' option.
1253 */
1254 void
1255 mono_aot_register_globals (gpointer *globals)
1256 {
1257 g_assert_not_reached ();
1258 }
1259
1260 /*
1261 * mono_aot_register_module:
1262 *
1263 * This should be called by embedding code to register AOT modules statically linked
1264 * into the executable. AOT_INFO should be the value of the
1265 * 'mono_aot_module_<ASSEMBLY_NAME>_info' global symbol from the AOT module.
1266 */
1267 void
1268 mono_aot_register_module (gpointer *aot_info)
1269 {
1270 gpointer *globals;
1271 char *aname;
1272
1273 globals = aot_info;
1274 g_assert (globals);
1275
1276 /* Determine the assembly name */
1277 find_symbol (NULL, globals, "mono_aot_assembly_name", (gpointer*)&aname);
1278 g_assert (aname);
1279
1280 /* This could be called before startup */
1281 if (aot_modules)
1282 mono_aot_lock ();
1283
1284 if (!static_aot_modules)
1285 static_aot_modules = g_hash_table_new (g_str_hash, g_str_equal);
1286
1287 g_hash_table_insert (static_aot_modules, aname, globals);
1288
1289 if (aot_modules)
1290 mono_aot_unlock ();
1291 }
1292
1293 void
1294 mono_aot_init (void)
1295 {
1296 InitializeCriticalSection (&aot_mutex);
1297 aot_modules = g_hash_table_new (NULL, NULL);
1298
1299 mono_install_assembly_load_hook (load_aot_module, NULL);
1300
1301 if (g_getenv ("MONO_LASTAOT"))
1302 mono_last_aot_method = atoi (g_getenv ("MONO_LASTAOT"));
1303 if (g_getenv ("MONO_AOT_CACHE"))
1304 use_aot_cache = TRUE;
1305 }
1306
1307 static gboolean
1308 decode_cached_class_info (MonoAotModule *module, MonoCachedClassInfo *info, guint8 *buf, guint8 **endbuf)
1309 {
1310 guint32 flags;
1311
1312 info->vtable_size = decode_value (buf, &buf);
1313 if (info->vtable_size == -1)
1314 /* Generic type */
1315 return FALSE;
1316 flags = decode_value (buf, &buf);
1317 info->ghcimpl = (flags >> 0) & 0x1;
1318 info->has_finalize = (flags >> 1) & 0x1;
1319 info->has_cctor = (flags >> 2) & 0x1;
1320 info->has_nested_classes = (flags >> 3) & 0x1;
1321 info->blittable = (flags >> 4) & 0x1;
1322 info->has_references = (flags >> 5) & 0x1;
1323 info->has_static_refs = (flags >> 6) & 0x1;
1324 info->no_special_static_fields = (flags >> 7) & 0x1;
1325 info->is_generic_container = (flags >> 8) & 0x1;
1326
1327 if (info->has_cctor) {
1328 MonoImage *cctor_image = decode_method_ref (module, &info->cctor_token, NULL, NULL, buf, &buf);
1329 if (!cctor_image)
1330 return FALSE;
1331 }
1332 if (info->has_finalize) {
1333 info->finalize_image = decode_method_ref (module, &info->finalize_token, NULL, NULL, buf, &buf);
1334 if (!info->finalize_image)
1335 return FALSE;
1336 }
1337
1338 info->instance_size = decode_value (buf, &buf);
1339 info->class_size = decode_value (buf, &buf);
1340 info->packing_size = decode_value (buf, &buf);
1341 info->min_align = decode_value (buf, &buf);
1342
1343 *endbuf = buf;
1344
1345 return TRUE;
1346 }
1347
1348 gpointer
1349 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
1350 {
1351 int i;
1352 MonoClass *klass = vtable->klass;
1353 MonoAotModule *aot_module = klass->image->aot_module;
1354 guint8 *info, *p;
1355 MonoCachedClassInfo class_info;
1356 gboolean err;
1357 guint32 token;
1358 MonoImage *image;
1359 gboolean no_aot_trampoline;
1360
1361 if (MONO_CLASS_IS_INTERFACE (klass) || klass->rank || !aot_module)
1362 return NULL;
1363
1364 info = &aot_module->blob [mono_aot_get_offset (aot_module->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
1365 p = info;
1366
1367 err = decode_cached_class_info (aot_module, &class_info, p, &p);
1368 if (!err)
1369 return NULL;
1370
1371 for (i = 0; i < slot; ++i)
1372 decode_method_ref (aot_module, &token, NULL, NULL, p, &p);
1373
1374 image = decode_method_ref (aot_module, &token, NULL, &no_aot_trampoline, p, &p);
1375 if (!image)
1376 return NULL;
1377 if (no_aot_trampoline)
1378 return NULL;
1379
1380 if (mono_metadata_token_index (token) == 0)
1381 return NULL;
1382
1383 return mono_aot_get_method_from_token (domain, image, token);
1384 }
1385
1386 gboolean
1387 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
1388 {
1389 MonoAotModule *aot_module = klass->image->aot_module;
1390 guint8 *p;
1391 gboolean err;
1392
1393 if (klass->rank || !aot_module)
1394 return FALSE;
1395
1396 p = (guint8*)&aot_module->blob [mono_aot_get_offset (aot_module->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
1397
1398 err = decode_cached_class_info (aot_module, res, p, &p);
1399 if (!err)
1400 return FALSE;
1401
1402 return TRUE;
1403 }
1404
1405 /**
1406 * mono_aot_get_class_from_name:
1407 *
1408 * Obtains a MonoClass with a given namespace and a given name which is located in IMAGE,
1409 * using a cache stored in the AOT file.
1410 * Stores the resulting class in *KLASS if found, stores NULL otherwise.
1411 *
1412 * Returns: TRUE if the klass was found/not found in the cache, FALSE if no aot file was
1413 * found.
1414 */
1415 gboolean
1416 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
1417 {
1418 MonoAotModule *aot_module = image->aot_module;
1419 guint16 *table, *entry;
1420 guint16 table_size;
1421 guint32 hash;
1422 char full_name_buf [1024];
1423 char *full_name;
1424 const char *name2, *name_space2;
1425 MonoTableInfo *t;
1426 guint32 cols [MONO_TYPEDEF_SIZE];
1427 GHashTable *nspace_table;
1428
1429 if (!aot_module || !aot_module->class_name_table)
1430 return FALSE;
1431
1432 mono_aot_lock ();
1433
1434 *klass = NULL;
1435
1436 /* First look in the cache */
1437 if (!aot_module->name_cache)
1438 aot_module->name_cache = g_hash_table_new (g_str_hash, g_str_equal);
1439 nspace_table = g_hash_table_lookup (aot_module->name_cache, name_space);
1440 if (nspace_table) {
1441 *klass = g_hash_table_lookup (nspace_table, name);
1442 if (*klass) {
1443 mono_aot_unlock ();
1444 return TRUE;
1445 }
1446 }
1447
1448 table_size = aot_module->class_name_table [0];
1449 table = aot_module->class_name_table + 1;
1450
1451 if (name_space [0] == '\0')
1452 full_name = g_strdup_printf ("%s", name);
1453 else {
1454 if (strlen (name_space) + strlen (name) < 1000) {
1455 sprintf (full_name_buf, "%s.%s", name_space, name);
1456 full_name = full_name_buf;
1457 } else {
1458 full_name = g_strdup_printf ("%s.%s", name_space, name);
1459 }
1460 }
1461 hash = mono_metadata_str_hash (full_name) % table_size;
1462 if (full_name != full_name_buf)
1463 g_free (full_name);
1464
1465 entry = &table [hash * 2];
1466
1467 if (entry [0] != 0) {
1468 t = &image->tables [MONO_TABLE_TYPEDEF];
1469
1470 while (TRUE) {
1471 guint32 index = entry [0];
1472 guint32 next = entry [1];
1473 guint32 token = mono_metadata_make_token (MONO_TABLE_TYPEDEF, index);
1474
1475 name_table_accesses ++;
1476
1477 mono_metadata_decode_row (t, index - 1, cols, MONO_TYPEDEF_SIZE);
1478
1479 name2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
1480 name_space2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
1481
1482 if (!strcmp (name, name2) && !strcmp (name_space, name_space2)) {
1483 mono_aot_unlock ();
1484 *klass = mono_class_get (image, token);
1485
1486 /* Add to cache */
1487 if (*klass) {
1488 mono_aot_lock ();
1489 nspace_table = g_hash_table_lookup (aot_module->name_cache, name_space);
1490 if (!nspace_table) {
1491 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
1492 g_hash_table_insert (aot_module->name_cache, (char*)name_space2, nspace_table);
1493 }
1494 g_hash_table_insert (nspace_table, (char*)name2, *klass);
1495 mono_aot_unlock ();
1496 }
1497 return TRUE;
1498 }
1499
1500 if (next != 0) {
1501 entry = &table [next * 2];
1502 } else {
1503 break;
1504 }
1505 }
1506 }
1507
1508 mono_aot_unlock ();
1509
1510 return TRUE;
1511 }
1512
1513 #define DW_EH_PE_omit 0xff
1514 #define DW_EH_PE_uleb128 0x01
1515 #define DW_EH_PE_udata2 0x02
1516 #define DW_EH_PE_udata4 0x03
1517 #define DW_EH_PE_udata8 0x04
1518 #define DW_EH_PE_sleb128 0x09
1519 #define DW_EH_PE_sdata2 0x0A
1520 #define DW_EH_PE_sdata4 0x0B
1521 #define DW_EH_PE_sdata8 0x0C
1522
1523 #define DW_EH_PE_absptr 0x00
1524 #define DW_EH_PE_pcrel 0x10
1525 #define DW_EH_PE_datarel 0x30
1526 #define DW_EH_PE_omit 0xff
1527
1528 typedef struct
1529 {
1530 guint8 version;
1531 guint8 eh_frame_ptr_enc;
1532 guint8 fde_count_enc;
1533 guint8 table_enc;
1534 guint8 rest;
1535 } eh_frame_hdr;
1536
1537 /*
1538 * decode_eh_frame:
1539 *
1540 * Decode the exception handling information in the .eh_frame section of the AOT
1541 * file belong to CODE, and construct a MonoJitInfo structure from it.
1542 * LOCKING: Acquires the domain lock.
1543 */
1544 static G_GNUC_UNUSED MonoJitInfo*
1545 decode_eh_frame (MonoAotModule *amodule, MonoDomain *domain,
1546 MonoMethod *method, guint8 *code, MonoJitInfo *orig_jinfo,
1547 int extra_size)
1548 {
1549 eh_frame_hdr *hdr;
1550 guint8 *p;
1551 guint8 *eh_frame, *unwind_info;
1552 guint32 eh_frame_ptr;
1553 int fde_count;
1554 gint32 *table;
1555 int i, pos, left, right, offset, offset1, offset2;
1556 guint32 unw_len, code_len;
1557 MonoJitExceptionInfo *ei;
1558 guint32 ei_len;
1559 gpointer *type_info;
1560 MonoJitInfo *jinfo;
1561
1562 g_assert (amodule->eh_frame_hdr);
1563
1564 // http://refspecs.freestandards.org/LSB_1.3.0/gLSB/gLSB/ehframehdr.html
1565 hdr = (eh_frame_hdr*)amodule->eh_frame_hdr;
1566 g_assert (hdr->version == 1);
1567 g_assert (hdr->eh_frame_ptr_enc == (DW_EH_PE_pcrel | DW_EH_PE_sdata4));
1568 g_assert (hdr->fde_count_enc == DW_EH_PE_udata4);
1569 g_assert (hdr->table_enc == (DW_EH_PE_datarel | DW_EH_PE_sdata4));
1570
1571 p = &(hdr->rest);
1572 eh_frame_ptr = *(guint32*)p;
1573 p += 4;
1574 fde_count = *(guint32*)p;
1575 p += 4;
1576 table = (gint32*)p;
1577
1578 /* Binary search in the table to find the entry for code */
1579 offset = code - amodule->eh_frame_hdr;
1580
1581 left = 0;
1582 right = fde_count;
1583 while (TRUE) {
1584 pos = (left + right) / 2;
1585
1586 offset1 = table [(pos * 2)];
1587 if (pos + 1 == fde_count)
1588 /* FIXME: */
1589 offset2 = amodule->code_end - amodule->code;
1590 else
1591 offset2 = table [(pos + 1) * 2];
1592
1593 if (offset < offset1)
1594 right = pos;
1595 else if (offset >= offset2)
1596 left = pos + 1;
1597 else
1598 break;
1599 }
1600
1601 g_assert (code >= amodule->eh_frame_hdr + table [(pos * 2)]);
1602 if (pos < fde_count)
1603 g_assert (code < amodule->eh_frame_hdr + table [(pos * 2) + 2]);
1604
1605 eh_frame = amodule->eh_frame_hdr + table [(pos * 2) + 1];
1606
1607 unwind_info = mono_unwind_decode_fde (eh_frame, &unw_len, &code_len, &ei, &ei_len, &type_info);
1608
1609 /*
1610 * LLVM might represent one IL region with multiple regions, so have to
1611 * allocate a new JI.
1612 */
1613 if (ei_len) {
1614 jinfo =
1615 mono_domain_alloc0 (domain, MONO_SIZEOF_JIT_INFO + (sizeof (MonoJitExceptionInfo) * ei_len) + extra_size);
1616 } else {
1617 jinfo = orig_jinfo;
1618 }
1619
1620 jinfo->code_size = code_len;
1621 jinfo->used_regs = mono_cache_unwind_info (unwind_info, unw_len);
1622 jinfo->method = method;
1623 jinfo->code_start = code;
1624 jinfo->domain_neutral = 0;
1625 /* This signals that used_regs points to a normal cached unwind info */
1626 jinfo->from_aot = 0;
1627 jinfo->num_clauses = ei_len;
1628
1629 for (i = 0; i < ei_len; ++i) {
1630 /*
1631 * orig_jinfo contains the original IL exception info saved by the AOT
1632 * compiler, we have to combine that with the information produced by LLVM
1633 */
1634 /* The type_info entries contain IL clause indexes */
1635 int clause_index = *(gint32*)type_info [i];
1636 MonoJitExceptionInfo *jei = &jinfo->clauses [i];
1637 MonoJitExceptionInfo *orig_jei = &orig_jinfo->clauses [clause_index];
1638
1639 g_assert (clause_index < orig_jinfo->num_clauses);
1640 jei->flags = orig_jei->flags;
1641 jei->data.catch_class = orig_jei->data.catch_class;
1642
1643 jei->try_start = ei [i].try_start;
1644 jei->try_end = ei [i].try_end;
1645 jei->handler_start = ei [i].handler_start;
1646 }
1647
1648 return jinfo;
1649 }
1650
1651 #ifdef TARGET_ARM
1652
1653 /* The offsets in the table are 31 bits long, have to extend them to 32 */
1654 #define EXTEND_PREL31(val) ((((gint32)(val)) << 1) >> 1)
1655
1656 static inline guint32
1657 decode_uleb128 (guint8 *buf, guint8 **endbuf)
1658 {
1659 guint8 *p = buf;
1660 guint32 res = 0;
1661 int shift = 0;
1662
1663 while (TRUE) {
1664 guint8 b = *p;
1665 p ++;
1666
1667 res = res | (((int)(b & 0x7f)) << shift);
1668 if (!(b & 0x80))
1669 break;
1670 shift += 7;
1671 }
1672
1673 *endbuf = p;
1674
1675 return res;
1676 }
1677
1678 static GSList*
1679 decode_arm_eh_ops (guint8 *unwind_ops, int nops)
1680 {
1681 int i, vsp_reg, vsp_offset;
1682 GSList *ops;
1683 gint32 *reg_offsets;
1684
1685 /*
1686 * Have to convert the ARM unwind info into DWARF unwind info.
1687 * The ARM unwind info specifies a simple set of instructions which need to be
1688 * executed during unwinding. It manipulates a virtual stack pointer (vsp). The
1689 * connection with DWARF unwind info is the following: after all ARM unwind
1690 * opcodes have been executed, the stack should be completely unwound, i.e.
1691 * vsp == DWARF CFA. This allows us to construct the DWARF opcodes corresponding
1692 * to the ARM opcodes.
1693 * The ARM unwind info is not instruction precise, i. e. it can't handle
1694 * async exceptions etc.
1695 */
1696 /* The reg used to compute the initial value of vsp */
1697 vsp_reg = ARMREG_SP;
1698 /* The offset between vsp_reg and the CFA */
1699 vsp_offset = 0;
1700
1701 /* The register save offsets from the initial value of vsp */
1702 reg_offsets = g_new0 (gint32, 16);
1703 for (i = 0; i < 16; ++i)
1704 reg_offsets [i] = -1;
1705
1706 /* section 9.3 in the ehabi doc */
1707 for (i = 0; i < nops; ++i) {
1708 guint8 op = unwind_ops [i];
1709
1710 if ((op >> 6) == 0) {
1711 /* vsp = vsp + (xxxxxx << 2) + 4. */
1712 vsp_offset += ((op & 0x3f) << 2) + 4;
1713 } else if ((op >> 6) == 1) {
1714 /* vsp = vsp - (xxxxxx << 2) - 4. */
1715 vsp_offset -= ((op & 0x3f) << 2) + 4;
1716 } else if (op == 0xb2) {
1717 /* vsp = vsp = vsp + 0x204 + (uleb128 << 2) */
1718 guint8 *p = unwind_ops + i + 1;
1719 guint32 v = decode_uleb128 (p, &p);
1720
1721 vsp_offset += 0x204 + (v << 2);
1722 i = (p - unwind_ops) - 1;
1723 } else if (op >= 0x80 && op <= 0x8f) {
1724 /* pop registers */
1725 guint8 op2;
1726 GSList *regs;
1727 int j;
1728
1729 g_assert (i + 1 < nops);
1730 op2 = unwind_ops [i + 1];
1731
1732 regs = NULL;
1733 for (j = 0; j < 8; ++j)
1734 if (op2 & (0x1 << j))
1735 regs = g_slist_append (regs, GUINT_TO_POINTER (ARMREG_R4 + j));
1736 for (j = 0; j < 4; ++j)
1737 if (op & (0x1 << j))
1738 regs = g_slist_append (regs, GUINT_TO_POINTER (ARMREG_R12 + j));
1739 g_assert (regs);
1740
1741 for (j = 0; j < g_slist_length (regs); ++j)
1742 reg_offsets [GPOINTER_TO_UINT (g_slist_nth (regs, j)->data)] = vsp_offset + (j * 4);
1743
1744 vsp_offset += g_slist_length (regs) * 4;
1745
1746 g_slist_free (regs);
1747
1748 i ++;
1749 } else if (op >= 0xa8 && op <= 0xaf) {
1750 GSList *regs;
1751 int j;
1752
1753 /* pop r4-r[4 + nnn], r14 */
1754
1755 regs = NULL;
1756 for (j = 0; j <= (op & 0x7); ++j)
1757 regs = g_slist_append (regs, GUINT_TO_POINTER (ARMREG_R4 + j));
1758 regs = g_slist_append (regs, GUINT_TO_POINTER (ARMREG_R14));
1759
1760 for (j = 0; j < g_slist_length (regs); ++j)
1761 reg_offsets [GPOINTER_TO_UINT (g_slist_nth (regs, j)->data)] = vsp_offset + (j * 4);
1762
1763 vsp_offset += g_slist_length (regs) * 4;
1764
1765 g_slist_free (regs);
1766 } else if (op == 0xb0) {
1767 /* finish */
1768 break;
1769 } else if (op >= 0x90 && op <= 0x9f && op != 0x9d && op != 0x9f) {
1770 /* vsp = <reg> */
1771 vsp_reg = op & 0xf;
1772 vsp_offset = 0;
1773 } else {
1774 int j;
1775
1776 for (j = 0; j < nops; ++j)
1777 printf ("%x ", unwind_ops [j]);
1778 printf (" / %d\n", i);
1779 g_assert_not_reached ();
1780 }
1781 }
1782
1783 ops = NULL;
1784
1785 /* vsp_reg + vsp_offset = CFA */
1786 mono_add_unwind_op_def_cfa (ops, (guint8*)NULL, (guint8*)NULL, vsp_reg, vsp_offset);
1787
1788 for (i = 0; i < 16; ++i) {
1789 if (reg_offsets [i] != -1)
1790 /* The reg is saved at vsp_reg + reg_offset [i] == CFA - (vsp_offset - reg_offset [i]) */
1791 mono_add_unwind_op_offset (ops, (guint8*)NULL, (guint8*)NULL, i, - (vsp_offset - reg_offsets [i]));
1792 }
1793
1794 return ops;
1795 }
1796
1797 /*
1798 * decode_arm_exidx:
1799 *
1800 * Decode the exception handling information in the .ARM.exidx section of the AOT
1801 * file belong to CODE, and construct a MonoJitInfo structure from it.
1802 * LOCKING: Acquires the domain lock.
1803 */
1804 static void
1805 decode_arm_exidx (MonoAotModule *amodule, MonoDomain *domain,
1806 MonoMethod *method, guint8 *code, guint32 code_len, MonoJitInfo *jinfo)
1807 {
1808 guint32 *table;
1809 guint8 *base, *code1, *code2;
1810 int i, pos, left, right, offset, offset1, offset2, count, nwords, nops;
1811 guint32 entry;
1812 guint8 unwind_ops [64];
1813 GSList *ops;
1814 guint8 *unwind_info;
1815 guint32 unw_len;
1816
1817 g_assert (amodule->arm_exidx);
1818
1819 table = (guint32*)amodule->arm_exidx;
1820
1821 /*
1822 * The table format is described in:
1823 * infocenter.arm.com/help/topic/com.arm.doc.../IHI0038A_ehabi.pdf
1824 */
1825
1826 base = amodule->arm_exidx;
1827 count = amodule->arm_exidx_size / 8;
1828
1829 /* Binary search in the table to find the entry for code */
1830 offset = code - base;
1831
1832 left = 0;
1833 right = count;
1834 while (TRUE) {
1835 pos = (left + right) / 2;
1836
1837 if (left == right)
1838 break;
1839
1840 offset1 = EXTEND_PREL31 (table [(pos * 2)]);
1841 code1 = (guint8*)&(table [pos * 2]) + offset1;
1842 if (pos + 1 == count)
1843 /* FIXME: */
1844 offset2 = amodule->code_end - amodule->code;
1845 else
1846 offset2 = EXTEND_PREL31 (table [(pos + 1) * 2]);
1847 code2 = (guint8*)&(table [(pos + 1) * 2]) + offset2;
1848
1849 if (code < code1)
1850 right = pos;
1851 else if (code >= code2)
1852 left = pos + 1;
1853 else
1854 break;
1855 }
1856
1857 if (code >= code1) {
1858 /*
1859 * The linker might merge duplicate unwind table entries, so
1860 * offset1 and offset2 might point to another method, but this is not a problem.
1861 */
1862 code1 = (guint8*)&(table [pos * 2]) + offset1;
1863 code2 = (guint8*)&(table [(pos + 1) * 2]) + offset2;
1864
1865 g_assert (code >= code1);
1866 if (pos < count)
1867 g_assert (code < code2);
1868
1869 entry = table [(pos * 2) + 1];
1870
1871 /* inline entry, compact model, personality routine 0 */
1872 if ((entry & 0xff000000) == 0x80000000) {
1873 nops = 3;
1874 unwind_ops [0] = (entry & 0x00ff0000) >> 16;
1875 unwind_ops [1] = (entry & 0x0000ff00) >> 8;
1876 unwind_ops [2] = (entry & 0x000000ff) >> 0;
1877
1878 ops = decode_arm_eh_ops (unwind_ops, nops);
1879 } else if ((entry & 0x80000000) == 0) {
1880 /* non-inline entry */
1881 guint8 *data = (guint8*)&table [(pos * 2) + 1] + EXTEND_PREL31 (entry);
1882
1883 entry = ((guint32*)data) [0];
1884
1885 /* compact model, personality routine 1 */
1886 g_assert ((entry & 0xff000000) == 0x81000000);
1887
1888 nwords = (entry & 0x00ff0000) >> 16;
1889 nops = nwords * 4 + 2;
1890 g_assert (nops < 64);
1891
1892 unwind_ops [0] = (entry & 0x0000ff00) >> 8;
1893 unwind_ops [1] = (entry & 0x000000ff) >> 0;
1894
1895 for (i = 0; i < nwords; ++i) {
1896 entry = ((guint32*)data) [1 + i];
1897 unwind_ops [(i * 4) + 2] = (entry & 0xff000000) >> 24;
1898 unwind_ops [(i * 4) + 2 + 1] = (entry & 0x00ff0000) >> 16;
1899 unwind_ops [(i * 4) + 2 + 2] = (entry & 0x0000ff00) >> 8;
1900 unwind_ops [(i * 4) + 2 + 3] = (entry & 0x000000ff) >> 0;
1901 }
1902
1903 ops = decode_arm_eh_ops (unwind_ops, nops);
1904 } else {
1905 NOT_IMPLEMENTED;
1906 }
1907
1908 unwind_info = mono_unwind_ops_encode (ops, &unw_len);
1909 } else {
1910 /* The method has no unwind info */
1911 unwind_info = NULL;
1912 unw_len = 0;
1913 }
1914
1915 jinfo->code_size = code_len;
1916 jinfo->used_regs = mono_cache_unwind_info (unwind_info, unw_len);
1917 jinfo->method = method;
1918 jinfo->code_start = code;
1919 jinfo->domain_neutral = 0;
1920 /* This signals that used_regs points to a normal cached unwind info */
1921 jinfo->from_aot = 0;
1922 }
1923 #endif
1924
1925 /*
1926 * LOCKING: Acquires the domain lock.
1927 */
1928 static MonoJitInfo*
1929 decode_exception_debug_info (MonoAotModule *amodule, MonoDomain *domain,
1930 MonoMethod *method, guint8* ex_info, guint8 *addr,
1931 guint8 *code, guint32 code_len)
1932 {
1933 int i, buf_len;
1934 MonoJitInfo *jinfo;
1935 guint used_int_regs, flags;
1936 gboolean has_generic_jit_info, has_dwarf_unwind_info, has_clauses, has_seq_points;
1937 gboolean from_llvm;
1938 guint8 *p;
1939 int generic_info_size;
1940
1941 /* Load the method info from the AOT file */
1942
1943 p = ex_info;
1944 flags = decode_value (p, &p);
1945 has_generic_jit_info = (flags & 1) != 0;
1946 has_dwarf_unwind_info = (flags & 2) != 0;
1947 has_clauses = (flags & 4) != 0;
1948 has_seq_points = (flags & 8) != 0;
1949 from_llvm = (flags & 16) != 0;
1950 if (has_dwarf_unwind_info) {
1951 guint32 offset;
1952
1953 offset = decode_value (p, &p);
1954 g_assert (offset < (1 << 30));
1955 used_int_regs = offset;
1956 } else {
1957 used_int_regs = decode_value (p, &p);
1958 }
1959 if (has_generic_jit_info)
1960 generic_info_size = sizeof (MonoGenericJitInfo);
1961 else
1962 generic_info_size = 0;
1963
1964 /* Exception table */
1965 if (has_clauses) {
1966 int num_clauses = decode_value (p, &p);
1967
1968 jinfo =
1969 mono_domain_alloc0 (domain, MONO_SIZEOF_JIT_INFO + (sizeof (MonoJitExceptionInfo) * num_clauses) + generic_info_size);
1970 jinfo->num_clauses = num_clauses;
1971
1972 for (i = 0; i < num_clauses; ++i) {
1973 MonoJitExceptionInfo *ei = &jinfo->clauses [i];
1974
1975 ei->flags = decode_value (p, &p);
1976
1977 if (from_llvm) {
1978 if (decode_value (p, &p))
1979 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
1980
1981 /* The rest of the info is in the DWARF EH section */
1982 continue;
1983 }
1984
1985 ei->exvar_offset = decode_value (p, &p);
1986
1987 if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER || ei->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
1988 ei->data.filter = code + decode_value (p, &p);
1989 else {
1990 if (decode_value (p, &p))
1991 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
1992 }
1993
1994 ei->try_start = code + decode_value (p, &p);
1995 ei->try_end = code + decode_value (p, &p);
1996 ei->handler_start = code + decode_value (p, &p);
1997 }
1998 }
1999 else {
2000 jinfo = mono_domain_alloc0 (domain, MONO_SIZEOF_JIT_INFO + generic_info_size);
2001 }
2002
2003 if (from_llvm) {
2004 /* LLVM compiled method */
2005 /* The info is in the .eh_frame section */
2006 #ifdef TARGET_ARM
2007 decode_arm_exidx (amodule, domain, method, code, code_len, jinfo);
2008 #else
2009 jinfo = decode_eh_frame (amodule, domain, method, code, jinfo, generic_info_size);
2010 #endif
2011 jinfo->from_llvm = 1;
2012 } else {
2013 jinfo->code_size = code_len;
2014 jinfo->used_regs = used_int_regs;
2015 jinfo->method = method;
2016 jinfo->code_start = code;
2017 jinfo->domain_neutral = 0;
2018 jinfo->from_aot = 1;
2019 }
2020
2021 if (has_generic_jit_info) {
2022 MonoGenericJitInfo *gi;
2023
2024 jinfo->has_generic_jit_info = 1;
2025
2026 gi = mono_jit_info_get_generic_jit_info (jinfo);
2027 g_assert (gi);
2028
2029 gi->has_this = decode_value (p, &p);
2030 gi->this_reg = decode_value (p, &p);
2031 gi->this_offset = decode_value (p, &p);
2032
2033 /* This currently contains no data */
2034 gi->generic_sharing_context = g_new0 (MonoGenericSharingContext, 1);
2035
2036 jinfo->method = decode_method_ref_2 (amodule, p, &p);
2037 }
2038
2039 if (has_seq_points) {
2040 MonoSeqPointInfo *seq_points;
2041 int il_offset, native_offset, last_il_offset, last_native_offset, j;
2042
2043 int len = decode_value (p, &p);
2044
2045 seq_points = g_malloc0 (sizeof (MonoSeqPointInfo) + (len - MONO_ZERO_LEN_ARRAY) * sizeof (SeqPoint));
2046 seq_points->len = len;
2047 last_il_offset = last_native_offset = 0;
2048 for (i = 0; i < len; ++i) {
2049 SeqPoint *sp = &seq_points->seq_points [i];
2050 il_offset = last_il_offset + decode_value (p, &p);
2051 native_offset = last_native_offset + decode_value (p, &p);
2052
2053 sp->il_offset = il_offset;
2054 sp->native_offset = native_offset;
2055
2056 sp->next_len = decode_value (p, &p);
2057 sp->next = g_new (int, sp->next_len);
2058 for (j = 0; j < sp->next_len; ++j)
2059 sp->next [j] = decode_value (p, &p);
2060
2061 last_il_offset = il_offset;
2062 last_native_offset = native_offset;
2063 }
2064
2065 mono_domain_lock (domain);
2066 g_hash_table_insert (domain_jit_info (domain)->seq_points, method, seq_points);
2067 mono_domain_unlock (domain);
2068 }
2069
2070 /* Load debug info */
2071 buf_len = decode_value (p, &p);
2072 mono_debug_add_aot_method (domain, method, code, p, buf_len);
2073
2074 if (amodule != jinfo->method->klass->image->aot_module) {
2075 mono_aot_lock ();
2076 if (!ji_to_amodule)
2077 ji_to_amodule = g_hash_table_new (NULL, NULL);
2078 g_hash_table_insert (ji_to_amodule, jinfo, amodule);
2079 mono_aot_unlock ();
2080 }
2081
2082 return jinfo;
2083 }
2084
2085 /*
2086 * mono_aot_get_unwind_info:
2087 *
2088 * Return a pointer to the DWARF unwind info belonging to JI.
2089 */
2090 guint8*
2091 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
2092 {
2093 MonoAotModule *amodule = ji->method->klass->image->aot_module;
2094 guint8 *p;
2095 guint8 *code = ji->code_start;
2096
2097 g_assert (amodule);
2098 g_assert (ji->from_aot);
2099
2100 if (!(code >= amodule->code && code <= amodule->code_end)) {
2101 /* ji belongs to a different aot module than amodule */
2102 mono_aot_lock ();
2103 g_assert (ji_to_amodule);
2104 amodule = g_hash_table_lookup (ji_to_amodule, ji);
2105 g_assert (amodule);
2106 g_assert (code >= amodule->code && code <= amodule->code_end);
2107 mono_aot_unlock ();
2108 }
2109
2110 p = amodule->unwind_info + ji->used_regs;
2111 *unwind_info_len = decode_value (p, &p);
2112 return p;
2113 }
2114
2115 static G_GNUC_UNUSED int
2116 compare_ints (const void *a, const void *b)
2117 {
2118 return *(gint32*)a - *(gint32*)b;
2119 }
2120
2121 static void
2122 msort_code_offsets_internal (gint32 *array, int lo, int hi, gint32 *scratch)
2123 {
2124 int mid = (lo + hi) / 2;
2125 int i, t_lo, t_hi;
2126
2127 if (lo >= hi)
2128 return;
2129
2130 if (hi - lo < 32) {
2131 for (i = lo; i < hi; ++i)
2132 if (array [(i * 2)] > array [(i * 2) + 2])
2133 break;
2134 if (i == hi)
2135 /* Already sorted */
2136 return;
2137 }
2138
2139 msort_code_offsets_internal (array, lo, mid, scratch);
2140 msort_code_offsets_internal (array, mid + 1, hi, scratch);
2141
2142 if (array [mid * 2] < array [(mid + 1) * 2])
2143 return;
2144
2145 /* Merge */
2146 t_lo = lo;
2147 t_hi = mid + 1;
2148 for (i = lo; i <= hi; i ++) {
2149 if (t_lo <= mid && ((t_hi > hi) || array [t_lo * 2] < array [t_hi * 2])) {
2150 scratch [(i * 2)] = array [t_lo * 2];
2151 scratch [(i * 2) + 1] = array [(t_lo *2) + 1];
2152 t_lo ++;
2153 } else {
2154 scratch [(i * 2)] = array [t_hi * 2];
2155 scratch [(i * 2) + 1] = array [(t_hi *2) + 1];
2156 t_hi ++;
2157 }
2158 }
2159 for (i = lo; i <= hi; ++i) {
2160 array [(i * 2)] = scratch [i * 2];
2161 array [(i * 2) + 1] = scratch [(i * 2) + 1];
2162 }
2163 }
2164
2165 static void
2166 msort_code_offsets (gint32 *array, int len)
2167 {
2168 gint32 *scratch;
2169
2170 scratch = g_new (gint32, len * 2);
2171 msort_code_offsets_internal (array, 0, len - 1, scratch);
2172 g_free (scratch);
2173 }
2174
2175 MonoJitInfo *
2176 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
2177 {
2178 int pos, left, right, offset, offset1, offset2, code_len;
2179 int method_index, table_len, is_wrapper;
2180 guint32 token;
2181 MonoAotModule *amodule = image->aot_module;
2182 MonoMethod *method;
2183 MonoJitInfo *jinfo;
2184 guint8 *code, *ex_info, *p;
2185 guint32 *table;
2186 int nmethods = amodule->info.nmethods;
2187 gint32 *code_offsets;
2188 int offsets_len, i;
2189
2190 if (!amodule)
2191 return NULL;
2192
2193 if (domain != mono_get_root_domain ())
2194 /* FIXME: */
2195 return NULL;
2196
2197 offset = (guint8*)addr - amodule->code;
2198
2199 /* Compute a sorted table mapping code offsets to method indexes. */
2200 if (!amodule->sorted_code_offsets) {
2201
2202 code_offsets = g_new0 (gint32, nmethods * 2);
2203 offsets_len = 0;
2204 for (i = 0; i < nmethods; ++i) {
2205 /* Skip the -1 entries to speed up sorting */
2206 if (amodule->code_offsets [i] == 0xffffffff)
2207 continue;
2208 code_offsets [(offsets_len * 2)] = amodule->code_offsets [i];
2209 code_offsets [(offsets_len *2) + 1] = i;
2210 offsets_len ++;
2211 }
2212 /* Use a merge sort as this is mostly sorted */
2213 msort_code_offsets (code_offsets, offsets_len);
2214 //qsort (code_offsets, offsets_len, sizeof (gint32) * 2, compare_ints);
2215 for (i = 0; i < offsets_len -1; ++i)
2216 g_assert (code_offsets [(i * 2)] <= code_offsets [(i + 1) * 2]);
2217
2218 if (InterlockedCompareExchangePointer ((gpointer*)&amodule->sorted_code_offsets, code_offsets, NULL) != NULL)
2219 /* Somebody got in before us */
2220 g_free (code_offsets);
2221 amodule->sorted_code_offsets_len = offsets_len;
2222 }
2223
2224 code_offsets = amodule->sorted_code_offsets;
2225 offsets_len = amodule->sorted_code_offsets_len;
2226
2227 /* Binary search in the sorted_code_offsets table */
2228 left = 0;
2229 right = offsets_len;
2230 while (TRUE) {
2231 pos = (left + right) / 2;
2232
2233 offset1 = code_offsets [(pos * 2)];
2234 if (pos + 1 == offsets_len)
2235 offset2 = amodule->code_end - amodule->code;
2236 else
2237 offset2 = code_offsets [(pos + 1) * 2];
2238
2239 if (offset < offset1)
2240 right = pos;
2241 else if (offset >= offset2)
2242 left = pos + 1;
2243 else
2244 break;
2245 }
2246
2247 g_assert (offset >= code_offsets [(pos * 2)]);
2248 if (pos + 1 < offsets_len)
2249 g_assert (offset < code_offsets [((pos + 1) * 2)]);
2250 method_index = code_offsets [(pos * 2) + 1];
2251
2252 code = &amodule->code [amodule->code_offsets [method_index]];
2253 ex_info = &amodule->blob [mono_aot_get_offset (amodule->ex_info_offsets, method_index)];
2254
2255 if (pos == offsets_len - 1)
2256 code_len = amodule->code_end - code;
2257 else
2258 code_len = code_offsets [(pos + 1) * 2] - code_offsets [pos * 2];
2259
2260 g_assert ((guint8*)code <= (guint8*)addr && (guint8*)addr < (guint8*)code + code_len);
2261
2262 /* Might be a wrapper/extra method */
2263 if (amodule->extra_methods) {
2264 mono_aot_lock ();
2265 method = g_hash_table_lookup (amodule->extra_methods, GUINT_TO_POINTER (method_index));
2266 mono_aot_unlock ();
2267 } else {
2268 method = NULL;
2269 }
2270
2271 if (!method) {
2272 if (method_index >= image->tables [MONO_TABLE_METHOD].rows) {
2273 /*
2274 * This is hit for extra methods which are called directly, so they are
2275 * not in amodule->extra_methods.
2276 */
2277 table_len = amodule->extra_method_info_offsets [0];
2278 table = amodule->extra_method_info_offsets + 1;
2279 left = 0;
2280 right = table_len;
2281 pos = 0;
2282
2283 /* Binary search */
2284 while (TRUE) {
2285 pos = ((left + right) / 2);
2286
2287 g_assert (pos < table_len);
2288
2289 if (table [pos * 2] < method_index)
2290 left = pos + 1;
2291 else if (table [pos * 2] > method_index)
2292 right = pos;
2293 else
2294 break;
2295 }
2296
2297 p = amodule->blob + table [(pos * 2) + 1];
2298 is_wrapper = decode_value (p, &p);
2299 g_assert (!is_wrapper);
2300 method = decode_method_ref_2 (amodule, p, &p);
2301 g_assert (method);
2302 } else {
2303 token = mono_metadata_make_token (MONO_TABLE_METHOD, method_index + 1);
2304 method = mono_get_method (image, token, NULL);
2305 }
2306 }
2307
2308 /* FIXME: */
2309 g_assert (method);
2310
2311 //printf ("F: %s\n", mono_method_full_name (method, TRUE));
2312
2313 jinfo = decode_exception_debug_info (amodule, domain, method, ex_info, addr, code, code_len);
2314
2315 g_assert ((guint8*)addr >= (guint8*)jinfo->code_start);
2316 g_assert ((guint8*)addr < (guint8*)jinfo->code_start + jinfo->code_size);
2317
2318 /* Add it to the normal JitInfo tables */
2319 mono_jit_info_table_add (domain, jinfo);
2320
2321 return jinfo;
2322 }
2323
2324 static gboolean
2325 decode_patch (MonoAotModule *aot_module, MonoMemPool *mp, MonoJumpInfo *ji, guint8 *buf, guint8 **endbuf)
2326 {
2327 guint8 *p = buf;
2328 gpointer *table;
2329 MonoImage *image;
2330 int i;
2331
2332 switch (ji->type) {
2333 case MONO_PATCH_INFO_METHOD:
2334 case MONO_PATCH_INFO_METHOD_JUMP:
2335 case MONO_PATCH_INFO_ICALL_ADDR:
2336 case MONO_PATCH_INFO_METHOD_RGCTX: {
2337 guint32 token;
2338 MonoMethod *method;
2339 gboolean no_aot_trampoline;
2340
2341 image = decode_method_ref (aot_module, &token, &method, &no_aot_trampoline, p, &p);
2342 if (!image)
2343 goto cleanup;
2344
2345 if (!method && !mono_aot_only && !no_aot_trampoline && (ji->type == MONO_PATCH_INFO_METHOD) && (mono_metadata_token_table (token) == MONO_TABLE_METHOD)) {
2346 ji->data.target = mono_create_ftnptr (mono_domain_get (), mono_create_jit_trampoline_from_token (image, token));
2347 ji->type = MONO_PATCH_INFO_ABS;
2348 }
2349 else {
2350 if (method)
2351 ji->data.method = method;
2352 else
2353 ji->data.method = mono_get_method (image, token, NULL);
2354 g_assert (ji->data.method);
2355 mono_class_init (ji->data.method->klass);
2356 }
2357 break;
2358 }
2359 case MONO_PATCH_INFO_INTERNAL_METHOD:
2360 case MONO_PATCH_INFO_JIT_ICALL_ADDR: {
2361 guint32 len = decode_value (p, &p);
2362
2363 ji->data.name = (char*)p;
2364 p += len + 1;
2365 break;
2366 }
2367 case MONO_PATCH_INFO_METHODCONST:
2368 /* Shared */
2369 ji->data.method = decode_method_ref_2 (aot_module, p, &p);
2370 if (!ji->data.method)
2371 goto cleanup;
2372 break;
2373 case MONO_PATCH_INFO_VTABLE:
2374 case MONO_PATCH_INFO_CLASS:
2375 case MONO_PATCH_INFO_IID:
2376 case MONO_PATCH_INFO_ADJUSTED_IID:
2377 /* Shared */
2378 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2379 if (!ji->data.klass)
2380 goto cleanup;
2381 break;
2382 case MONO_PATCH_INFO_CLASS_INIT:
2383 case MONO_PATCH_INFO_DELEGATE_TRAMPOLINE:
2384 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2385 if (!ji->data.klass)
2386 goto cleanup;
2387 break;
2388 case MONO_PATCH_INFO_IMAGE:
2389 ji->data.image = load_image (aot_module, decode_value (p, &p), TRUE);
2390 if (!ji->data.image)
2391 goto cleanup;
2392 break;
2393 case MONO_PATCH_INFO_FIELD:
2394 case MONO_PATCH_INFO_SFLDA:
2395 /* Shared */
2396 ji->data.field = decode_field_info (aot_module, p, &p);
2397 if (!ji->data.field)
2398 goto cleanup;
2399 break;
2400 case MONO_PATCH_INFO_SWITCH:
2401 ji->data.table = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoBBTable));
2402 ji->data.table->table_size = decode_value (p, &p);
2403 table = mono_domain_alloc (mono_domain_get (), sizeof (gpointer) * ji->data.table->table_size);
2404 ji->data.table->table = (MonoBasicBlock**)table;
2405 for (i = 0; i < ji->data.table->table_size; i++)
2406 table [i] = (gpointer)(gssize)decode_value (p, &p);
2407 break;
2408 case MONO_PATCH_INFO_R4: {
2409 guint32 val;
2410
2411 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (float));
2412 val = decode_value (p, &p);
2413 *(float*)ji->data.target = *(float*)&val;
2414 break;
2415 }
2416 case MONO_PATCH_INFO_R8: {
2417 guint32 val [2];
2418 guint64 v;
2419
2420 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (double));
2421
2422 val [0] = decode_value (p, &p);
2423 val [1] = decode_value (p, &p);
2424 v = ((guint64)val [1] << 32) | ((guint64)val [0]);
2425 *(double*)ji->data.target = *(double*)&v;
2426 break;
2427 }
2428 case MONO_PATCH_INFO_LDSTR:
2429 image = load_image (aot_module, decode_value (p, &p), TRUE);
2430 if (!image)
2431 goto cleanup;
2432 ji->data.token = mono_jump_info_token_new (mp, image, MONO_TOKEN_STRING + decode_value (p, &p));
2433 break;
2434 case MONO_PATCH_INFO_RVA:
2435 case MONO_PATCH_INFO_DECLSEC:
2436 case MONO_PATCH_INFO_LDTOKEN:
2437 case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
2438 /* Shared */
2439 image = load_image (aot_module, decode_value (p, &p), TRUE);
2440 if (!image)
2441 goto cleanup;
2442 ji->data.token = mono_jump_info_token_new (mp, image, decode_value (p, &p));
2443
2444 ji->data.token->has_context = decode_value (p, &p);
2445 if (ji->data.token->has_context) {
2446 gboolean res = decode_generic_context (aot_module, &ji->data.token->context, p, &p);
2447 if (!res)
2448 goto cleanup;
2449 }
2450 break;
2451 case MONO_PATCH_INFO_EXC_NAME:
2452 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2453 if (!ji->data.klass)
2454 goto cleanup;
2455 ji->data.name = ji->data.klass->name;
2456 break;
2457 case MONO_PATCH_INFO_METHOD_REL:
2458 ji->data.offset = decode_value (p, &p);
2459 break;
2460 case MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG:
2461 case MONO_PATCH_INFO_GENERIC_CLASS_INIT:
2462 case MONO_PATCH_INFO_MONITOR_ENTER:
2463 case MONO_PATCH_INFO_MONITOR_EXIT:
2464 break;
2465 case MONO_PATCH_INFO_RGCTX_FETCH: {
2466 gboolean res;
2467 MonoJumpInfoRgctxEntry *entry;
2468
2469 entry = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
2470 entry->method = decode_method_ref_2 (aot_module, p, &p);
2471 entry->in_mrgctx = decode_value (p, &p);
2472 entry->info_type = decode_value (p, &p);
2473 entry->data = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
2474 entry->data->type = decode_value (p, &p);
2475
2476 res = decode_patch (aot_module, mp, entry->data, p, &p);
2477 if (!res)
2478 goto cleanup;
2479 ji->data.rgctx_entry = entry;
2480 break;
2481 }
2482 case MONO_PATCH_INFO_SEQ_POINT_INFO:
2483 break;
2484 case MONO_PATCH_INFO_LLVM_IMT_TRAMPOLINE: {
2485 MonoJumpInfoImtTramp *imt_tramp = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoImtTramp));
2486
2487 imt_tramp->method = decode_method_ref_2 (aot_module, p, &p);
2488 imt_tramp->vt_offset = decode_value (p, &p);
2489
2490 ji->data.imt_tramp = imt_tramp;
2491 break;
2492 }
2493 default:
2494 g_warning ("unhandled type %d", ji->type);
2495 g_assert_not_reached ();
2496 }
2497
2498 *endbuf = p;
2499
2500 return TRUE;
2501
2502 cleanup:
2503 return FALSE;
2504 }
2505
2506 static MonoJumpInfo*
2507 load_patch_info (MonoAotModule *aot_module, MonoMemPool *mp, int n_patches,
2508 guint32 **got_slots,
2509 guint8 *buf, guint8 **endbuf)
2510 {
2511 MonoJumpInfo *patches;
2512 int pindex;
2513 guint8 *p;
2514
2515 p = buf;
2516
2517 patches = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo) * n_patches);
2518
2519 *got_slots = g_malloc (sizeof (guint32) * n_patches);
2520
2521 for (pindex = 0; pindex < n_patches; ++pindex) {
2522 MonoJumpInfo *ji = &patches [pindex];
2523 guint8 *shared_p;
2524 gboolean res;
2525 guint32 got_offset;
2526
2527 got_offset = decode_value (p, &p);
2528
2529 if (aot_module->got [got_offset]) {
2530 /* Already loaded */
2531 //printf ("HIT!\n");
2532 } else {
2533 shared_p = aot_module->blob + mono_aot_get_offset (aot_module->got_info_offsets, got_offset);
2534
2535 ji->type = decode_value (shared_p, &shared_p);
2536
2537 res = decode_patch (aot_module, mp, ji, shared_p, &shared_p);
2538 if (!res)
2539 goto cleanup;
2540 }
2541
2542 (*got_slots) [pindex] = got_offset;
2543 }
2544
2545 *endbuf = p;
2546 return patches;
2547
2548 cleanup:
2549 g_free (*got_slots);
2550 *got_slots = NULL;
2551
2552 return NULL;
2553 }
2554
2555 static void
2556 register_jump_target_got_slot (MonoDomain *domain, MonoMethod *method, gpointer *got_slot)
2557 {
2558 /*
2559 * Jump addresses cannot be patched by the trampoline code since it
2560 * does not have access to the caller's address. Instead, we collect
2561 * the addresses of the GOT slots pointing to a method, and patch
2562 * them after the method has been compiled.
2563 */
2564 MonoJitDomainInfo *info = domain_jit_info (domain);
2565 GSList *list;
2566
2567 mono_domain_lock (domain);
2568 if (!info->jump_target_got_slot_hash)
2569 info->jump_target_got_slot_hash = g_hash_table_new (NULL, NULL);
2570 list = g_hash_table_lookup (info->jump_target_got_slot_hash, method);
2571 list = g_slist_prepend (list, got_slot);
2572 g_hash_table_insert (info->jump_target_got_slot_hash, method, list);
2573 mono_domain_unlock (domain);
2574 }
2575
2576 /*
2577 * load_method:
2578 *
2579 * Load the method identified by METHOD_INDEX from the AOT image. Return a
2580 * pointer to the native code of the method, or NULL if not found.
2581 * METHOD might not be set if the caller only has the image/token info.
2582 */
2583 static gpointer
2584 load_method (MonoDomain *domain, MonoAotModule *amodule, MonoImage *image, MonoMethod *method, guint32 token, int method_index)
2585 {
2586 MonoClass *klass;
2587 gboolean from_plt = method == NULL;
2588 MonoMemPool *mp;
2589 int i, pindex, n_patches, used_strings;
2590 gboolean keep_patches = TRUE;
2591 guint8 *p;
2592 MonoJitInfo *jinfo = NULL;
2593 guint8 *code, *info;
2594
2595 if (mono_profiler_get_events () & MONO_PROFILE_ENTER_LEAVE)
2596 return NULL;
2597
2598 if ((domain != mono_get_root_domain ()) && (!(amodule->info.opts & MONO_OPT_SHARED)))
2599 /* Non shared AOT code can't be used in other appdomains */
2600 return NULL;
2601
2602 if (amodule->out_of_date)
2603 return NULL;
2604
2605 if (amodule->code_offsets [method_index] == 0xffffffff) {
2606 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
2607 char *full_name;
2608
2609 if (!method)
2610 method = mono_get_method (image, token, NULL);
2611 full_name = mono_method_full_name (method, TRUE);
2612 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.\n", full_name);
2613 g_free (full_name);
2614 }
2615 return NULL;
2616 }
2617
2618 code = &amodule->code [amodule->code_offsets [method_index]];
2619
2620 info = &amodule->blob [mono_aot_get_offset (amodule->method_info_offsets, method_index)];
2621
2622 mono_aot_lock ();
2623 if (!amodule->methods_loaded)
2624 amodule->methods_loaded = g_new0 (guint32, amodule->info.nmethods + 1);
2625 mono_aot_unlock ();
2626
2627 if ((amodule->methods_loaded [method_index / 32] >> (method_index % 32)) & 0x1)
2628 return code;
2629
2630 if (mono_last_aot_method != -1) {
2631 if (mono_jit_stats.methods_aot >= mono_last_aot_method)
2632 return NULL;
2633 else if (mono_jit_stats.methods_aot == mono_last_aot_method - 1) {
2634 if (!method)
2635 method = mono_get_method (image, token, NULL);
2636 if (method) {
2637 char *name = mono_method_full_name (method, TRUE);
2638 printf ("LAST AOT METHOD: %s.\n", name);
2639 g_free (name);
2640 } else {
2641 printf ("LAST AOT METHOD: %p %d\n", code, method_index);
2642 }
2643 }
2644 }
2645
2646 p = info;
2647
2648 if (method) {
2649 klass = method->klass;
2650 decode_klass_ref (amodule, p, &p);
2651 } else {
2652 klass = decode_klass_ref (amodule, p, &p);
2653 }
2654
2655 if (amodule->info.opts & MONO_OPT_SHARED)
2656 used_strings = decode_value (p, &p);
2657 else
2658 used_strings = 0;
2659
2660 for (i = 0; i < used_strings; i++) {
2661 guint token = decode_value (p, &p);
2662 mono_ldstr (mono_get_root_domain (), image, mono_metadata_token_index (token));
2663 }
2664
2665 if (amodule->info.opts & MONO_OPT_SHARED)
2666 keep_patches = FALSE;
2667
2668 n_patches = decode_value (p, &p);
2669
2670 keep_patches = FALSE;
2671
2672 if (n_patches) {
2673 MonoJumpInfo *patches;
2674 guint32 *got_slots;
2675
2676 if (keep_patches)
2677 mp = domain->mp;
2678 else
2679 mp = mono_mempool_new ();
2680
2681 patches = load_patch_info (amodule, mp, n_patches, &got_slots, p, &p);
2682 if (patches == NULL)
2683 goto cleanup;
2684
2685 for (pindex = 0; pindex < n_patches; ++pindex) {
2686 MonoJumpInfo *ji = &patches [pindex];
2687
2688 if (!amodule->got [got_slots [pindex]]) {
2689 amodule->got [got_slots [pindex]] = mono_resolve_patch_target (method, domain, code, ji, TRUE);
2690 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
2691 amodule->got [got_slots [pindex]] = mono_create_ftnptr (domain, amodule->got [got_slots [pindex]]);
2692 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
2693 register_jump_target_got_slot (domain, ji->data.method, &(amodule->got [got_slots [pindex]]));
2694 }
2695 ji->type = MONO_PATCH_INFO_NONE;
2696 }
2697
2698 g_free (got_slots);
2699
2700 if (!keep_patches)
2701 mono_mempool_destroy (mp);
2702 }
2703
2704 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
2705 char *full_name;
2706
2707 if (!method)
2708 method = mono_get_method (image, token, NULL);
2709
2710 full_name = mono_method_full_name (method, TRUE);
2711
2712 if (!jinfo)
2713 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
2714
2715 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT FOUND AOT compiled code for %s %p - %p %p\n", full_name, code, code + jinfo->code_size, info);
2716 g_free (full_name);
2717 }
2718
2719 mono_aot_lock ();
2720
2721 mono_jit_stats.methods_aot++;
2722
2723 amodule->methods_loaded [method_index / 32] |= 1 << (method_index % 32);
2724
2725 init_plt (amodule);
2726
2727 if (method && method->wrapper_type)
2728 g_hash_table_insert (amodule->method_to_code, method, code);
2729
2730 mono_aot_unlock ();
2731
2732 if (mono_profiler_get_events () & MONO_PROFILE_JIT_COMPILATION) {
2733 MonoJitInfo *jinfo;
2734
2735 if (!method) {
2736 method = mono_get_method (image, token, NULL);
2737 g_assert (method);
2738 }
2739 mono_profiler_method_jit (method);
2740 jinfo = mono_jit_info_table_find (domain, (char*)code);
2741 g_assert (jinfo);
2742 mono_profiler_method_end_jit (method, jinfo, MONO_PROFILE_OK);
2743 }
2744
2745 if (from_plt && klass && !klass->generic_container)
2746 mono_runtime_class_init (mono_class_vtable (domain, klass));
2747
2748 return code;
2749
2750 cleanup:
2751 /* FIXME: The space in domain->mp is wasted */
2752 if (amodule->info.opts & MONO_OPT_SHARED)
2753 /* No need to cache patches */
2754 mono_mempool_destroy (mp);
2755
2756 if (jinfo)
2757 g_free (jinfo);
2758
2759 return NULL;
2760 }
2761
2762 static guint32
2763 find_extra_method_in_amodule (MonoAotModule *amodule, MonoMethod *method, const char *name)
2764 {
2765 guint32 table_size, entry_size, hash;
2766 guint32 *table, *entry;
2767 guint32 index;
2768 static guint32 n_extra_decodes;
2769
2770 if (!amodule)
2771 return 0xffffff;
2772
2773 table_size = amodule->extra_method_table [0];
2774 table = amodule->extra_method_table + 1;
2775 entry_size = 3;
2776
2777 hash = mono_aot_method_hash (method) % table_size;
2778
2779 entry = &table [hash * entry_size];
2780
2781 if (entry [0] == 0)
2782 return 0xffffff;
2783
2784 index = 0xffffff;
2785 while (TRUE) {
2786 guint32 key = entry [0];
2787 guint32 value = entry [1];
2788 guint32 next = entry [entry_size - 1];
2789 MonoMethod *m;
2790 guint8 *p;
2791 int is_wrapper_name;
2792
2793 p = amodule->blob + key;
2794 is_wrapper_name = decode_value (p, &p);
2795 if (is_wrapper_name) {
2796 int wrapper_type = decode_value (p, &p);
2797 if (wrapper_type == method->wrapper_type && !strcmp (name, (char*)p)) {
2798 index = value;
2799 break;
2800 }
2801 } else if (can_method_ref_match_method (amodule, p, method)) {
2802 mono_aot_lock ();
2803 if (!amodule->method_ref_to_method)
2804 amodule->method_ref_to_method = g_hash_table_new (NULL, NULL);
2805 m = g_hash_table_lookup (amodule->method_ref_to_method, p);
2806 mono_aot_unlock ();
2807 if (!m) {
2808 guint8 *orig_p = p;
2809 m = decode_method_ref_2 (amodule, p, &p);
2810 if (m) {
2811 mono_aot_lock ();
2812 g_hash_table_insert (amodule->method_ref_to_method, orig_p, m);
2813 mono_aot_unlock ();
2814 }
2815 }
2816 if (m == method) {
2817 index = value;
2818 break;
2819 }
2820
2821 /* Special case: wrappers of shared generic methods */
2822 if (m && method->wrapper_type && m->wrapper_type == m->wrapper_type &&
2823 method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
2824 MonoMethod *w1 = mono_marshal_method_from_wrapper (method);
2825 MonoMethod *w2 = mono_marshal_method_from_wrapper (m);
2826
2827 if (w1->is_inflated && ((MonoMethodInflated *)w1)->declaring == w2) {
2828 index = value;
2829 break;
2830 }
2831 }
2832
2833 /* Methods decoded needlessly */
2834 /*
2835 if (m)
2836 printf ("%d %s %s\n", n_extra_decodes, mono_method_full_name (method, TRUE), mono_method_full_name (m, TRUE));
2837 */
2838 n_extra_decodes ++;
2839 }
2840
2841 if (next != 0)
2842 entry = &table [next * entry_size];
2843 else
2844 break;
2845 }
2846
2847 return index;
2848 }
2849
2850 static void
2851 add_module_cb (gpointer key, gpointer value, gpointer user_data)
2852 {
2853 g_ptr_array_add ((GPtrArray*)user_data, value);
2854 }
2855
2856 /*
2857 * find_extra_method:
2858 *
2859 * Try finding METHOD in the extra_method table in all AOT images.
2860 * Return its method index, or 0xffffff if not found. Set OUT_AMODULE to the AOT
2861 * module where the method was found.
2862 */
2863 static guint32
2864 find_extra_method (MonoMethod *method, MonoAotModule **out_amodule)
2865 {
2866 guint32 index;
2867 GPtrArray *modules;
2868 int i;
2869 char *name = NULL;
2870
2871 if (method->wrapper_type)
2872 name = mono_aot_wrapper_name (method);
2873
2874 /* Try the method's module first */
2875 *out_amodule = method->klass->image->aot_module;
2876 index = find_extra_method_in_amodule (method->klass->image->aot_module, method, name);
2877 if (index != 0xffffff) {
2878 g_free (name);
2879 return index;
2880 }
2881
2882 /*
2883 * Try all other modules.
2884 * This is needed because generic instances klass->image points to the image
2885 * containing the generic definition, but the native code is generated to the
2886 * AOT image which contains the reference.
2887 */
2888
2889 /* Make a copy to avoid doing the search inside the aot lock */
2890 modules = g_ptr_array_new ();
2891 mono_aot_lock ();
2892 g_hash_table_foreach (aot_modules, add_module_cb, modules);
2893 mono_aot_unlock ();
2894
2895 index = 0xffffff;
2896 for (i = 0; i < modules->len; ++i) {
2897 MonoAotModule *amodule = g_ptr_array_index (modules, i);
2898
2899 if (amodule != method->klass->image->aot_module)
2900 index = find_extra_method_in_amodule (amodule, method, name);
2901 if (index != 0xffffff) {
2902 *out_amodule = amodule;
2903 break;
2904 }
2905 }
2906
2907 g_ptr_array_free (modules, TRUE);
2908
2909 g_free (name);
2910 return index;
2911 }
2912
2913 /*
2914 * mono_aot_get_method:
2915 *
2916 * Return a pointer to the AOTed native code for METHOD if it can be found,
2917 * NULL otherwise.
2918 * On platforms with function pointers, this doesn't return a function pointer.
2919 */
2920 gpointer
2921 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
2922 {
2923 MonoClass *klass = method->klass;
2924 guint32 method_index;
2925 MonoAotModule *amodule = klass->image->aot_module;
2926 guint8 *code;
2927
2928 if (!amodule)
2929 return NULL;
2930
2931 if (amodule->out_of_date)
2932 return NULL;
2933
2934 if ((method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
2935 (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
2936 (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
2937 (method->flags & METHOD_ATTRIBUTE_ABSTRACT))
2938 return NULL;
2939
2940 /*
2941 * Use the original method instead of its invoke-with-check wrapper.
2942 * This is not a problem when using full-aot, since it doesn't support
2943 * remoting.
2944 */
2945 if (mono_aot_only && method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)
2946 return mono_aot_get_method (domain, mono_marshal_method_from_wrapper (method));
2947
2948 g_assert (klass->inited);
2949
2950 /* Find method index */
2951 if (method->is_inflated && mono_method_is_generic_sharable_impl_full (method, FALSE, FALSE)) {
2952 /*
2953 * For generic methods, we store the fully shared instance in place of the
2954 * original method.
2955 */
2956 method = mono_method_get_declaring_generic_method (method);
2957 method_index = mono_metadata_token_index (method->token) - 1;
2958 } else if (method->is_inflated || !method->token) {
2959 /* This hash table is used to avoid the slower search in the extra_method_table in the AOT image */
2960 mono_aot_lock ();
2961 code = g_hash_table_lookup (amodule->method_to_code, method);
2962 mono_aot_unlock ();
2963 if (code)
2964 return code;
2965
2966 method_index = find_extra_method (method, &amodule);
2967 /*
2968 * Special case the ICollection<T> wrappers for arrays, as they cannot
2969 * be statically enumerated, and each wrapper ends up calling the same
2970 * method in Array.
2971 */
2972 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED && method->klass->rank && strstr (method->name, "System.Collections.Generic")) {
2973 MonoMethod *m = mono_aot_get_array_helper_from_wrapper (method);
2974
2975 code = mono_aot_get_method (domain, m);
2976 if (code) {
2977 if (mono_method_needs_static_rgctx_invoke (m, FALSE)) {
2978 code = mono_create_static_rgctx_trampoline (m, mono_create_ftnptr (domain, code));
2979 /* The call above returns an ftnptr */
2980 code = mono_get_addr_from_ftnptr (code);
2981 }
2982
2983 return code;
2984 }
2985 }
2986
2987 /*
2988 * Special case Array.GetGenericValueImpl which is a generic icall.
2989 * Generic sharing currently can't handle it, but the icall returns data using
2990 * an out parameter, so the managed-to-native wrappers can share the same code.
2991 */
2992 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass == mono_defaults.array_class && !strcmp (method->name, "GetGenericValueImpl")) {
2993 MonoMethod *m;
2994 MonoGenericContext ctx;
2995 MonoType *args [16];
2996
2997 if (mono_method_signature (method)->params [1]->type == MONO_TYPE_OBJECT)
2998 /* Avoid recursion */
2999 return NULL;
3000
3001 m = mono_class_get_method_from_name (mono_defaults.array_class, "GetGenericValueImpl", 2);
3002 g_assert (m);
3003
3004 memset (&ctx, 0, sizeof (ctx));
3005 args [0] = &mono_defaults.object_class->byval_arg;
3006 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
3007
3008 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method (m, &ctx), TRUE, TRUE);
3009
3010 /*
3011 * Get the code for the <object> instantiation which should be emitted into
3012 * the mscorlib aot image by the AOT compiler.
3013 */
3014 code = mono_aot_get_method (domain, m);
3015 if (code)
3016 return code;
3017 }
3018
3019 if (method_index == 0xffffff && method->is_inflated && mono_method_is_generic_sharable_impl_full (method, FALSE, TRUE)) {
3020 /* Partial sharing */
3021 method_index = find_extra_method (mini_get_shared_method (method), &amodule);
3022 }
3023
3024 if (method_index == 0xffffff) {
3025 if (mono_aot_only && mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
3026 char *full_name;
3027
3028 full_name = mono_method_full_name (method, TRUE);
3029 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.\n", full_name);
3030 g_free (full_name);
3031 }
3032 return NULL;
3033 }
3034
3035 if (method_index == 0xffffff)
3036 return NULL;
3037
3038 /* Needed by find_jit_info */
3039 mono_aot_lock ();
3040 if (!amodule->extra_methods)
3041 amodule->extra_methods = g_hash_table_new (NULL, NULL);
3042 g_hash_table_insert (amodule->extra_methods, GUINT_TO_POINTER (method_index), method);
3043 mono_aot_unlock ();
3044 } else {
3045 /* Common case */
3046 method_index = mono_metadata_token_index (method->token) - 1;
3047 }
3048
3049 return load_method (domain, amodule, klass->image, method, method->token, method_index);
3050 }
3051
3052 /**
3053 * Same as mono_aot_get_method, but we try to avoid loading any metadata from the
3054 * method.
3055 */
3056 gpointer
3057 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
3058 {
3059 MonoAotModule *aot_module = image->aot_module;
3060 int method_index;
3061
3062 if (!aot_module)
3063 return NULL;
3064
3065 method_index = mono_metadata_token_index (token) - 1;
3066
3067 return load_method (domain, aot_module, image, NULL, token, method_index);
3068 }
3069
3070 typedef struct {
3071 guint8 *addr;
3072 gboolean res;
3073 } IsGotEntryUserData;
3074
3075 static void
3076 check_is_got_entry (gpointer key, gpointer value, gpointer user_data)
3077 {
3078 IsGotEntryUserData *data = (IsGotEntryUserData*)user_data;
3079 MonoAotModule *aot_module = (MonoAotModule*)value;
3080
3081 if (aot_module->got && (data->addr >= (guint8*)(aot_module->got)) && (data->addr < (guint8*)(aot_module->got + aot_module->info.got_size)))
3082 data->res = TRUE;
3083 }
3084
3085 gboolean
3086 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
3087 {
3088 IsGotEntryUserData user_data;
3089
3090 if (!aot_modules)
3091 return FALSE;
3092
3093 user_data.addr = addr;
3094 user_data.res = FALSE;
3095 mono_aot_lock ();
3096 g_hash_table_foreach (aot_modules, check_is_got_entry, &user_data);
3097 mono_aot_unlock ();
3098
3099 return user_data.res;
3100 }
3101
3102 typedef struct {
3103 guint8 *addr;
3104 MonoAotModule *module;
3105 } FindAotModuleUserData;
3106
3107 static void
3108 find_aot_module_cb (gpointer key, gpointer value, gpointer user_data)
3109 {
3110 FindAotModuleUserData *data = (FindAotModuleUserData*)user_data;
3111 MonoAotModule *aot_module = (MonoAotModule*)value;
3112
3113 if ((data->addr >= (guint8*)(aot_module->code)) && (data->addr < (guint8*)(aot_module->code_end)))
3114 data->module = aot_module;
3115 }
3116
3117 static inline MonoAotModule*
3118 find_aot_module (guint8 *code)
3119 {
3120 FindAotModuleUserData user_data;
3121
3122 if (!aot_modules)
3123 return NULL;
3124
3125 /* Reading these need no locking */
3126 if (((gsize)code < aot_code_low_addr) || ((gsize)code > aot_code_high_addr))
3127 return NULL;
3128
3129 user_data.addr = code;
3130 user_data.module = NULL;
3131
3132 mono_aot_lock ();
3133 g_hash_table_foreach (aot_modules, find_aot_module_cb, &user_data);
3134 mono_aot_unlock ();
3135
3136 return user_data.module;
3137 }
3138
3139 void
3140 mono_aot_patch_plt_entry (guint8 *code, gpointer *got, mgreg_t *regs, guint8 *addr)
3141 {
3142 /*
3143 * Since AOT code is only used in the root domain,
3144 * mono_domain_get () != mono_get_root_domain () means the calling method
3145 * is AppDomain:InvokeInDomain, so this is the same check as in
3146 * mono_method_same_domain () but without loading the metadata for the method.
3147 */
3148 if (mono_domain_get () == mono_get_root_domain ())
3149 mono_arch_patch_plt_entry (code, got, regs, addr);
3150 }
3151
3152 /*
3153 * mono_aot_plt_resolve:
3154 *
3155 * This function is called by the entries in the PLT to resolve the actual method that
3156 * needs to be called. It returns a trampoline to the method and patches the PLT entry.
3157 * Returns NULL if the something cannot be loaded.
3158 */
3159 gpointer
3160 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
3161 {
3162 #ifdef MONO_ARCH_AOT_SUPPORTED
3163 guint8 *p, *target, *plt_entry;
3164 MonoJumpInfo ji;
3165 MonoAotModule *module = (MonoAotModule*)aot_module;
3166 gboolean res, no_ftnptr = FALSE;
3167 MonoMemPool *mp;
3168
3169 //printf ("DYN: %p %d\n", aot_module, plt_info_offset);
3170
3171 p = &module->blob [plt_info_offset];
3172
3173 ji.type = decode_value (p, &p);
3174
3175 mp = mono_mempool_new_size (512);
3176 res = decode_patch (module, mp, &ji, p, &p);
3177
3178 if (!res) {
3179 mono_mempool_destroy (mp);
3180 return NULL;
3181 }
3182
3183 /*
3184 * Avoid calling resolve_patch_target in the full-aot case if possible, since
3185 * it would create a trampoline, and we don't need that.
3186 * We could do this only if the method does not need the special handling
3187 * in mono_magic_trampoline ().
3188 */
3189 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) &&
3190 !mono_method_needs_static_rgctx_invoke (ji.data.method, FALSE)) {
3191 target = mono_jit_compile_method (ji.data.method);
3192 no_ftnptr = TRUE;
3193 } else {
3194 target = mono_resolve_patch_target (NULL, mono_domain_get (), NULL, &ji, TRUE);
3195 }
3196
3197 /*
3198 * The trampoline expects us to return a function descriptor on platforms which use
3199 * it, but resolve_patch_target returns a direct function pointer for some type of
3200 * patches, so have to translate between the two.
3201 * FIXME: Clean this up, but how ?
3202 */
3203 if (ji.type == MONO_PATCH_INFO_ABS || ji.type == MONO_PATCH_INFO_INTERNAL_METHOD || ji.type == MONO_PATCH_INFO_CLASS_INIT || ji.type == MONO_PATCH_INFO_ICALL_ADDR || ji.type == MONO_PATCH_INFO_JIT_ICALL_ADDR || ji.type == MONO_PATCH_INFO_RGCTX_FETCH) {
3204 /* These should already have a function descriptor */
3205 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3206 /* Our function descriptors have a 0 environment, gcc created ones don't */
3207 if (ji.type != MONO_PATCH_INFO_INTERNAL_METHOD && ji.type != MONO_PATCH_INFO_JIT_ICALL_ADDR && ji.type != MONO_PATCH_INFO_ICALL_ADDR)
3208 g_assert (((gpointer*)target) [2] == 0);
3209 #endif
3210 /* Empty */
3211 } else if (!no_ftnptr) {
3212 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3213 g_assert (((gpointer*)target) [2] != 0);
3214 #endif
3215 target = mono_create_ftnptr (mono_domain_get (), target);
3216 }
3217
3218 mono_mempool_destroy (mp);
3219
3220 /* Patch the PLT entry with target which might be the actual method not a trampoline */
3221 plt_entry = mono_aot_get_plt_entry (code);
3222 g_assert (plt_entry);
3223 mono_aot_patch_plt_entry (plt_entry, module->got, NULL, target);
3224
3225 return target;
3226 #else
3227 g_assert_not_reached ();
3228 return NULL;
3229 #endif
3230 }
3231
3232 /**
3233 * init_plt:
3234 *
3235 * Initialize the PLT table of the AOT module. Called lazily when the first AOT
3236 * method in the module is loaded to avoid committing memory by writing to it.
3237 * LOCKING: Assumes the AOT lock is held.
3238 */
3239 static void
3240 init_plt (MonoAotModule *amodule)
3241 {
3242 #ifndef MONO_CROSS_COMPILE
3243
3244 #ifdef MONO_ARCH_AOT_SUPPORTED
3245 #ifdef __i386__
3246 guint8 *buf = amodule->plt;
3247 #elif defined(__x86_64__) || defined(__arm__) || defined(__mono_ppc__)
3248 int i;
3249 gpointer plt_0;
3250 #endif
3251 gpointer tramp;
3252
3253 if (amodule->plt_inited)
3254 return;
3255
3256 tramp = mono_create_specific_trampoline (amodule, MONO_TRAMPOLINE_AOT_PLT, mono_get_root_domain (), NULL);
3257
3258 #ifdef __i386__
3259 /* Initialize the first PLT entry */
3260 make_writable (amodule->plt, amodule->plt_end - amodule->plt);
3261 x86_jump_code (buf, tramp);
3262 #elif defined(__x86_64__) || defined(__arm__) || defined(__mono_ppc__)
3263 /*
3264 * Initialize the PLT entries in the GOT to point to the default targets.
3265 */
3266
3267 tramp = mono_create_ftnptr (mono_domain_get (), tramp);
3268 plt_0 = mono_create_ftnptr (mono_domain_get (), amodule->plt);
3269 /* The first entry points to the AOT trampoline */
3270 ((gpointer*)amodule->got)[amodule->info.plt_got_offset_base] = tramp;
3271 for (i = 1; i < amodule->info.plt_size; ++i)
3272 /* All the default entries point to the first entry */
3273 ((gpointer*)amodule->got)[amodule->info.plt_got_offset_base + i] = plt_0;
3274 #else
3275 g_assert_not_reached ();
3276 #endif
3277
3278 amodule->plt_inited = TRUE;
3279 #endif
3280
3281 #endif /* MONO_CROSS_COMPILE */
3282 }
3283
3284 /*
3285 * mono_aot_get_plt_entry:
3286 *
3287 * Return the address of the PLT entry called by the code at CODE if exists.
3288 */
3289 guint8*
3290 mono_aot_get_plt_entry (guint8 *code)
3291 {
3292 MonoAotModule *aot_module = find_aot_module (code);
3293 #if defined(__arm__) || defined(__mono_ppc__)
3294 guint32 ins;
3295 #endif
3296
3297 if (!aot_module)
3298 return NULL;
3299
3300 #if defined(__i386__) || defined(__x86_64__)
3301 if (code [-5] == 0xe8) {
3302 guint32 disp = *(guint32*)(code - 4);
3303 guint8 *target = code + disp;
3304
3305 if ((target >= (guint8*)(aot_module->plt)) && (target < (guint8*)(aot_module->plt_end)))
3306 return target;
3307 }
3308 #elif defined(__arm__)
3309 ins = ((guint32*)(gpointer)code) [-1];
3310
3311 /* Should be a 'bl' */
3312 if ((((ins >> 25) & 0x7) == 0x5) && (((ins >> 24) & 0x1) == 0x1)) {
3313 gint32 disp = ((gint32)ins) & 0xffffff;
3314 guint8 *target = code - 4 + 8 + (disp * 4);
3315
3316 if ((target >= (guint8*)(aot_module->plt)) && (target < (guint8*)(aot_module->plt_end)))
3317 return target;
3318 }
3319 #elif defined(__mono_ppc__)
3320 /* Should be a bl */
3321 ins = ((guint32*)(gpointer)code) [-1];
3322
3323 if ((ins >> 26 == 18) && ((ins & 1) == 1) && ((ins & 2) == 0)) {
3324 gint32 disp = (((gint32)ins) >> 2) & 0xffffff;
3325 guint8 *target = code - 4 + (disp * 4);
3326
3327 if ((target >= (guint8*)(aot_module->plt)) && (target < (guint8*)(aot_module->plt_end)))
3328 return target;
3329 }
3330 #else
3331 g_assert_not_reached ();
3332 #endif
3333
3334 return NULL;
3335 }
3336
3337 /*
3338 * mono_aot_get_plt_info_offset:
3339 *
3340 * Return the PLT info offset belonging to the plt entry called by CODE.
3341 */
3342 guint32
3343 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
3344 {
3345 guint8 *plt_entry = mono_aot_get_plt_entry (code);
3346
3347 g_assert (plt_entry);
3348
3349 /* The offset is embedded inside the code after the plt entry */
3350 #if defined(__i386__)
3351 return *(guint32*)(plt_entry + 5);
3352 #elif defined(__x86_64__)
3353 return *(guint32*)(plt_entry + 6);
3354 #elif defined(__arm__)
3355 /* The offset is stored as the 4th word of the plt entry */
3356 return ((guint32*)plt_entry) [3];
3357 #elif defined(__mono_ppc__)
3358 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3359 return ((guint32*)plt_entry) [8];
3360 #else
3361 return ((guint32*)plt_entry) [6];
3362 #endif
3363 #else
3364 g_assert_not_reached ();
3365 return 0;
3366 #endif
3367 }
3368
3369 static gpointer
3370 mono_create_ftnptr_malloc (guint8 *code)
3371 {
3372 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3373 MonoPPCFunctionDescriptor *ftnptr = g_malloc0 (sizeof (MonoPPCFunctionDescriptor));
3374
3375 ftnptr->code = code;
3376 ftnptr->toc = NULL;
3377 ftnptr->env = NULL;
3378
3379 return ftnptr;
3380 #else
3381 return code;
3382 #endif
3383 }
3384
3385 /*
3386 * load_function:
3387 *
3388 * Load the function named NAME from the aot image.
3389 */
3390 static gpointer
3391 load_function (MonoAotModule *amodule, const char *name)
3392 {
3393 char *symbol;
3394 guint8 *p;
3395 int n_patches, pindex;
3396 MonoMemPool *mp;
3397 gpointer code;
3398
3399 /* Load the code */
3400
3401 symbol = g_strdup_printf ("%s", name);
3402 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&code);
3403 g_free (symbol);
3404 if (!code)
3405 g_error ("Symbol '%s' not found in AOT file '%s'.\n", name, amodule->aot_name);
3406
3407 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT FOUND function '%s' in AOT file '%s'.\n", name, amodule->aot_name);
3408
3409 /* Load info */
3410
3411 symbol = g_strdup_printf ("%s_p", name);
3412 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&p);
3413 g_free (symbol);
3414 if (!p)
3415 /* Nothing to patch */
3416 return code;
3417
3418 p = amodule->blob + *(guint32*)p;
3419
3420 /* Similar to mono_aot_load_method () */
3421
3422 n_patches = decode_value (p, &p);
3423
3424 if (n_patches) {
3425 MonoJumpInfo *patches;
3426 guint32 *got_slots;
3427
3428 mp = mono_mempool_new ();
3429
3430 patches = load_patch_info (amodule, mp, n_patches, &got_slots, p, &p);
3431 g_assert (patches);
3432
3433 for (pindex = 0; pindex < n_patches; ++pindex) {
3434 MonoJumpInfo *ji = &patches [pindex];
3435 gpointer target;
3436
3437 if (amodule->got [got_slots [pindex]])
3438 continue;
3439
3440 /*
3441 * When this code is executed, the runtime may not be initalized yet, so
3442 * resolve the patch info by hand.
3443 */
3444 if (ji->type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
3445 if (!strcmp (ji->data.name, "mono_get_lmf_addr")) {
3446 target = mono_get_lmf_addr;
3447 } else if (!strcmp (ji->data.name, "mono_thread_force_interruption_checkpoint")) {
3448 target = mono_thread_force_interruption_checkpoint;
3449 } else if (!strcmp (ji->data.name, "mono_exception_from_token")) {
3450 target = mono_exception_from_token;
3451 } else if (!strcmp (ji->data.name, "mono_throw_exception")) {
3452 target = mono_get_throw_exception ();
3453 #ifdef __x86_64__
3454 } else if (!strcmp (ji->data.name, "mono_amd64_throw_exception")) {
3455 target = mono_amd64_throw_exception;
3456 #endif
3457 #ifdef __x86_64__
3458 } else if (!strcmp (ji->data.name, "mono_amd64_get_original_ip")) {
3459 target = mono_amd64_get_original_ip;
3460 #endif
3461 #ifdef __arm__
3462 } else if (!strcmp (ji->data.name, "mono_arm_throw_exception")) {
3463 target = mono_arm_throw_exception;
3464 } else if (!strcmp (ji->data.name, "mono_arm_throw_exception_by_token")) {
3465 target = mono_arm_throw_exception_by_token;
3466 #endif
3467 #ifdef __mono_ppc__
3468 } else if (!strcmp (ji->data.name, "mono_ppc_throw_exception")) {
3469 target = mono_ppc_throw_exception;
3470 #endif
3471 } else if (strstr (ji->data.name, "trampoline_func_") == ji->data.name) {
3472 int tramp_type2 = atoi (ji->data.name + strlen ("trampoline_func_"));
3473 target = (gpointer)mono_get_trampoline_func (tramp_type2);
3474 } else if (strstr (ji->data.name, "specific_trampoline_lazy_fetch_") == ji->data.name) {
3475 /* atoll is needed because the the offset is unsigned */
3476 guint32 slot;
3477 int res;
3478
3479 res = sscanf (ji->data.name, "specific_trampoline_lazy_fetch_%u", &slot);
3480 g_assert (res == 1);
3481 target = mono_create_specific_trampoline (GUINT_TO_POINTER (slot), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, mono_get_root_domain (), NULL);
3482 target = mono_create_ftnptr_malloc (target);
3483 } else if (!strcmp (ji->data.name, "specific_trampoline_monitor_enter")) {
3484 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_MONITOR_ENTER, mono_get_root_domain (), NULL);
3485 target = mono_create_ftnptr_malloc (target);
3486 } else if (!strcmp (ji->data.name, "specific_trampoline_monitor_exit")) {
3487 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_MONITOR_EXIT, mono_get_root_domain (), NULL);
3488 target = mono_create_ftnptr_malloc (target);
3489 } else if (!strcmp (ji->data.name, "specific_trampoline_generic_class_init")) {
3490 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_GENERIC_CLASS_INIT, mono_get_root_domain (), NULL);
3491 target = mono_create_ftnptr_malloc (target);
3492 } else if (!strcmp (ji->data.name, "mono_thread_get_and_clear_pending_exception")) {
3493 target = mono_thread_get_and_clear_pending_exception;
3494 } else {
3495 fprintf (stderr, "Unknown relocation '%s'\n", ji->data.name);
3496 g_assert_not_reached ();
3497 target = NULL;
3498 }
3499 } else {
3500 /* Hopefully the code doesn't have patches which need method or
3501 * domain to be set.
3502 */
3503 target = mono_resolve_patch_target (NULL, NULL, code, ji, FALSE);
3504 g_assert (target);
3505 }
3506
3507 amodule->got [got_slots [pindex]] = target;
3508 }
3509
3510 g_free (got_slots);
3511
3512 mono_mempool_destroy (mp);
3513 }
3514
3515 return code;
3516 }
3517
3518 /*
3519 * Return the piece of code identified by NAME from the mscorlib AOT file.
3520 * On ppc64, this returns a function descriptor.
3521 */
3522 gpointer
3523 mono_aot_get_named_code (const char *name)
3524 {
3525 MonoImage *image;
3526 MonoAotModule *amodule;
3527
3528 image = mono_defaults.corlib;
3529 g_assert (image);
3530
3531 amodule = image->aot_module;
3532 g_assert (amodule);
3533
3534 return mono_create_ftnptr_malloc (load_function (amodule, name));
3535 }
3536
3537 /* Return a given kind of trampoline */
3538 static gpointer
3539 get_numerous_trampoline (MonoAotTrampoline tramp_type, int n_got_slots, MonoAotModule **out_amodule, guint32 *got_offset, guint32 *out_tramp_size)
3540 {
3541 MonoAotModule *amodule;
3542 int index, tramp_size;
3543 MonoImage *image;
3544
3545 /* Currently, we keep all trampolines in the mscorlib AOT image */
3546 image = mono_defaults.corlib;
3547 g_assert (image);
3548
3549 mono_aot_lock ();
3550
3551 amodule = image->aot_module;
3552 g_assert (amodule);
3553
3554 *out_amodule = amodule;
3555
3556 if (amodule->trampoline_index [tramp_type] == amodule->info.num_trampolines [tramp_type])
3557 g_error ("Ran out of trampolines of type %d in '%s' (%d)\n", tramp_type, image->name, amodule->info.num_trampolines [tramp_type]);
3558
3559 index = amodule->trampoline_index [tramp_type] ++;
3560
3561 mono_aot_unlock ();
3562
3563 *got_offset = amodule->info.trampoline_got_offset_base [tramp_type] + (index * n_got_slots);
3564
3565 tramp_size = amodule->info.trampoline_size [tramp_type];
3566
3567 if (out_tramp_size)
3568 *out_tramp_size = tramp_size;
3569
3570 return amodule->trampolines [tramp_type] + (index * tramp_size);
3571 }
3572
3573 /*
3574 * Return a specific trampoline from the AOT file.
3575 */
3576 gpointer
3577 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
3578 {
3579 MonoAotModule *amodule;
3580 guint32 got_offset, tramp_size;
3581 guint8 *code, *tramp;
3582 static gpointer generic_trampolines [MONO_TRAMPOLINE_NUM];
3583 static gboolean inited;
3584 static guint32 num_trampolines;
3585
3586 if (!inited) {
3587 mono_aot_lock ();
3588
3589 if (!inited) {
3590 mono_counters_register ("Specific trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &num_trampolines);
3591 inited = TRUE;
3592 }
3593
3594 mono_aot_unlock ();
3595 }
3596
3597 num_trampolines ++;
3598
3599 if (!generic_trampolines [tramp_type]) {
3600 char *symbol;
3601
3602 symbol = g_strdup_printf ("generic_trampoline_%d", tramp_type);
3603 generic_trampolines [tramp_type] = mono_aot_get_named_code (symbol);
3604 g_free (symbol);
3605 }
3606
3607 tramp = generic_trampolines [tramp_type];
3608 g_assert (tramp);
3609
3610 code = get_numerous_trampoline (MONO_AOT_TRAMP_SPECIFIC, 2, &amodule, &got_offset, &tramp_size);
3611
3612 amodule->got [got_offset] = tramp;
3613 amodule->got [got_offset + 1] = arg1;
3614
3615 if (code_len)
3616 *code_len = tramp_size;
3617
3618 return code;
3619 }
3620
3621 gpointer
3622 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
3623 {
3624 MonoAotModule *amodule;
3625 guint8 *code;
3626 guint32 got_offset;
3627
3628 code = get_numerous_trampoline (MONO_AOT_TRAMP_STATIC_RGCTX, 2, &amodule, &got_offset, NULL);
3629
3630 amodule->got [got_offset] = ctx;
3631 amodule->got [got_offset + 1] = addr;
3632
3633 /* The caller expects an ftnptr */
3634 return mono_create_ftnptr (mono_domain_get (), code);
3635 }
3636
3637 gpointer
3638 mono_aot_get_unbox_trampoline (MonoMethod *method)
3639 {
3640 guint32 method_index = mono_metadata_token_index (method->token) - 1;
3641 MonoAotModule *amodule;
3642 char *symbol;
3643 gpointer code;
3644
3645 if (method->is_inflated && !mono_method_is_generic_sharable_impl (method, FALSE)) {
3646 guint32 index = find_extra_method (method, &amodule);
3647 g_assert (index != 0xffffff);
3648
3649 symbol = g_strdup_printf ("ut_e_%d", index);
3650 } else {
3651 amodule = method->klass->image->aot_module;
3652 g_assert (amodule);
3653
3654 symbol = g_strdup_printf ("ut_%d", method_index);
3655 }
3656 code = load_function (amodule, symbol);
3657 g_free (symbol);
3658
3659 /* The caller expects an ftnptr */
3660 return mono_create_ftnptr (mono_domain_get (), code);
3661 }
3662
3663 gpointer
3664 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
3665 {
3666 char *symbol;
3667 gpointer code;
3668
3669 symbol = g_strdup_printf ("rgctx_fetch_trampoline_%u", slot);
3670 code = load_function (mono_defaults.corlib->aot_module, symbol);
3671 g_free (symbol);
3672 /* The caller expects an ftnptr */
3673 return mono_create_ftnptr (mono_domain_get (), code);
3674 }
3675
3676 gpointer
3677 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
3678 {
3679 guint32 got_offset;
3680 gpointer code;
3681 gpointer *buf;
3682 int i;
3683 MonoAotModule *amodule;
3684
3685 code = get_numerous_trampoline (MONO_AOT_TRAMP_IMT_THUNK, 1, &amodule, &got_offset, NULL);
3686
3687 /* Save the entries into an array */
3688 buf = mono_domain_alloc (domain, (count + 1) * 2 * sizeof (gpointer));
3689 for (i = 0; i < count; ++i) {
3690 MonoIMTCheckItem *item = imt_entries [i];
3691
3692 g_assert (item->key);
3693 /* FIXME: */
3694 g_assert (!item->has_target_code);
3695
3696 buf [(i * 2)] = item->key;
3697 buf [(i * 2) + 1] = &(vtable->vtable [item->value.vtable_slot]);
3698 }
3699 buf [(count * 2)] = NULL;
3700 buf [(count * 2) + 1] = fail_tramp;
3701
3702 amodule->got [got_offset] = buf;
3703
3704 return code;
3705 }
3706
3707 /*
3708 * mono_aot_set_make_unreadable:
3709 *
3710 * Set whenever to make all mmaped memory unreadable. In conjuction with a
3711 * SIGSEGV handler, this is useful to find out which pages the runtime tries to read.
3712 */
3713 void
3714 mono_aot_set_make_unreadable (gboolean unreadable)
3715 {
3716 static int inited;
3717
3718 make_unreadable = unreadable;
3719
3720 if (make_unreadable && !inited) {
3721 mono_counters_register ("AOT pagefaults", MONO_COUNTER_JIT | MONO_COUNTER_INT, &n_pagefaults);
3722 }
3723 }
3724
3725 typedef struct {
3726 MonoAotModule *module;
3727 guint8 *ptr;
3728 } FindMapUserData;
3729
3730 static void
3731 find_map (gpointer key, gpointer value, gpointer user_data)
3732 {
3733 MonoAotModule *module = (MonoAotModule*)value;
3734 FindMapUserData *data = (FindMapUserData*)user_data;
3735
3736 if (!data->module)
3737 if ((data->ptr >= module->mem_begin) && (data->ptr < module->mem_end))
3738 data->module = module;
3739 }
3740
3741 static MonoAotModule*
3742 find_module_for_addr (void *ptr)
3743 {
3744 FindMapUserData data;
3745
3746 if (!make_unreadable)
3747 return NULL;
3748
3749 data.module = NULL;
3750 data.ptr = (guint8*)ptr;
3751
3752 mono_aot_lock ();
3753 g_hash_table_foreach (aot_modules, (GHFunc)find_map, &data);
3754 mono_aot_unlock ();
3755
3756 return data.module;
3757 }
3758
3759 /*
3760 * mono_aot_is_pagefault:
3761 *
3762 * Should be called from a SIGSEGV signal handler to find out whenever @ptr is
3763 * within memory allocated by this module.
3764 */
3765 gboolean
3766 mono_aot_is_pagefault (void *ptr)
3767 {
3768 if (!make_unreadable)
3769 return FALSE;
3770
3771 /*
3772 * Not signal safe, but SIGSEGV's are synchronous, and
3773 * this is only turned on by a MONO_DEBUG option.
3774 */
3775 return find_module_for_addr (ptr) != NULL;
3776 }
3777
3778 /*
3779 * mono_aot_handle_pagefault:
3780 *
3781 * Handle a pagefault caused by an unreadable page by making it readable again.
3782 */
3783 void
3784 mono_aot_handle_pagefault (void *ptr)
3785 {
3786 #ifndef PLATFORM_WIN32
3787 guint8* start = (guint8*)ROUND_DOWN (((gssize)ptr), mono_pagesize ());
3788 int res;
3789
3790 mono_aot_lock ();
3791 res = mono_mprotect (start, mono_pagesize (), MONO_MMAP_READ|MONO_MMAP_WRITE|MONO_MMAP_EXEC);
3792 g_assert (res == 0);
3793
3794 n_pagefaults ++;
3795 mono_aot_unlock ();
3796 #endif
3797 }
3798
3799 #else
3800 /* AOT disabled */
3801
3802 void
3803 mono_aot_init (void)
3804 {
3805 }
3806
3807 gpointer
3808 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
3809 {
3810 return NULL;
3811 }
3812
3813 gboolean
3814 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
3815 {
3816 return FALSE;
3817 }
3818
3819 gboolean
3820 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
3821 {
3822 return FALSE;
3823 }
3824
3825 gboolean
3826 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
3827 {
3828 return FALSE;
3829 }
3830
3831 MonoJitInfo *
3832 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
3833 {
3834 return NULL;
3835 }
3836
3837 gpointer
3838 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
3839 {
3840 return NULL;
3841 }
3842
3843 guint8*
3844 mono_aot_get_plt_entry (guint8 *code)
3845 {
3846 return NULL;
3847 }
3848
3849 gpointer
3850 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
3851 {
3852 return NULL;
3853 }
3854
3855 void
3856 mono_aot_patch_plt_entry (guint8 *code, gpointer *got, mgreg_t *regs, guint8 *addr)
3857 {
3858 }
3859
3860 gpointer
3861 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
3862 {
3863 return NULL;
3864 }
3865
3866 guint32
3867 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
3868 {
3869 g_assert_not_reached ();
3870
3871 return 0;
3872 }
3873
3874 gpointer
3875 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
3876 {
3877 g_assert_not_reached ();
3878 return NULL;
3879 }
3880
3881 gpointer
3882 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
3883 {
3884 g_assert_not_reached ();
3885 return NULL;
3886 }
3887
3888 gpointer
3889 mono_aot_get_named_code (const char *name)
3890 {
3891 g_assert_not_reached ();
3892 return NULL;
3893 }
3894
3895 gpointer
3896 mono_aot_get_unbox_trampoline (MonoMethod *method)
3897 {
3898 g_assert_not_reached ();
3899 return NULL;
3900 }
3901
3902 gpointer
3903 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
3904 {
3905 g_assert_not_reached ();
3906 return NULL;
3907 }
3908
3909 gpointer
3910 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
3911 {
3912 g_assert_not_reached ();
3913 return NULL;
3914 }
3915
3916 guint8*
3917 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
3918 {
3919 g_assert_not_reached ();
3920 return NULL;
3921 }
3922
3923 #endif
ppc64 and Haiku ports