?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Implement AOT support for the new Monitor.Enter () wrapper.
[mono-project/dkf.git] / mono / mini / aot-runtime.c
blobfc58efdfa63c81a758a24872e67e49e87a03acd6
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/metadata/mono-endian.h>
55 #include <mono/utils/mono-logger-internal.h>
56 #include <mono/utils/mono-mmap.h>
57 #include "mono/utils/mono-compiler.h"
58 #include <mono/utils/mono-counters.h>
59
60 #include "mini.h"
61 #include "version.h"
62
63 #ifndef DISABLE_AOT
64
65 #ifdef TARGET_WIN32
66 #define SHARED_EXT ".dll"
67 #elif ((defined(__ppc__) || defined(__powerpc__) || defined(__ppc64__)) || defined(__MACH__)) && !defined(__linux__)
68 #define SHARED_EXT ".dylib"
69 #elif defined(__APPLE__) && defined(TARGET_X86) && !defined(__native_client_codegen__)
70 #define SHARED_EXT ".dylib"
71 #else
72 #define SHARED_EXT ".so"
73 #endif
74
75 #define ALIGN_PTR_TO(ptr,align) (gpointer)((((gssize)(ptr)) + (align - 1)) & (~(align - 1)))
76 #define ROUND_DOWN(VALUE,SIZE) ((VALUE) & ~((SIZE) - 1))
77
78 typedef struct MonoAotModule {
79 char *aot_name;
80 /* Pointer to the Global Offset Table */
81 gpointer *got;
82 GHashTable *name_cache;
83 GHashTable *extra_methods;
84 /* Maps methods to their code */
85 GHashTable *method_to_code;
86 /* Maps pointers into the method info to the methods themselves */
87 GHashTable *method_ref_to_method;
88 MonoAssemblyName *image_names;
89 char **image_guids;
90 MonoAssembly *assembly;
91 MonoImage **image_table;
92 guint32 image_table_len;
93 gboolean out_of_date;
94 gboolean plt_inited;
95 guint8 *mem_begin;
96 guint8 *mem_end;
97 guint8 *code;
98 guint8 *code_end;
99 guint8 *plt;
100 guint8 *plt_end;
101 guint8 *blob;
102 gint32 *code_offsets;
103 /* This contains <offset, index> pairs sorted by offset */
104 /* This is needed because LLVM emitted methods can be in any order */
105 gint32 *sorted_code_offsets;
106 gint32 sorted_code_offsets_len;
107 guint32 *method_info_offsets;
108 guint32 *got_info_offsets;
109 guint32 *ex_info_offsets;
110 guint32 *class_info_offsets;
111 guint32 *methods_loaded;
112 guint16 *class_name_table;
113 guint32 *extra_method_table;
114 guint32 *extra_method_info_offsets;
115 guint8 *unwind_info;
116 guint8 *thumb_end;
117
118 /* Points to the mono EH data created by LLVM */
119 guint8 *mono_eh_frame;
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 GHashTable *aot_jit_icall_hash;
173
174 static void
175 init_plt (MonoAotModule *info);
176
177 /*****************************************************/
178 /* AOT RUNTIME */
179 /*****************************************************/
180
181 /*
182 * load_image:
183 *
184 * Load one of the images referenced by AMODULE. Returns NULL if the image is not
185 * found, and sets the loader error if SET_ERROR is TRUE.
186 */
187 static MonoImage *
188 load_image (MonoAotModule *amodule, int index, gboolean set_error)
189 {
190 MonoAssembly *assembly;
191 MonoImageOpenStatus status;
192
193 g_assert (index < amodule->image_table_len);
194
195 if (amodule->image_table [index])
196 return amodule->image_table [index];
197 if (amodule->out_of_date)
198 return NULL;
199
200 assembly = mono_assembly_load (&amodule->image_names [index], amodule->assembly->basedir, &status);
201 if (!assembly) {
202 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);
203 amodule->out_of_date = TRUE;
204
205 if (set_error) {
206 char *full_name = mono_stringify_assembly_name (&amodule->image_names [index]);
207 mono_loader_set_error_assembly_load (full_name, FALSE);
208 g_free (full_name);
209 }
210 return NULL;
211 }
212
213 if (strcmp (assembly->image->guid, amodule->image_guids [index])) {
214 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is unusable (GUID of dependent assembly %s doesn't match (expected '%s', got '%s').\n", amodule->aot_name, amodule->image_names [index].name, amodule->image_guids [index], assembly->image->guid);
215 amodule->out_of_date = TRUE;
216 return NULL;
217 }
218
219 amodule->image_table [index] = assembly->image;
220 return assembly->image;
221 }
222
223 static inline gint32
224 decode_value (guint8 *ptr, guint8 **rptr)
225 {
226 guint8 b = *ptr;
227 gint32 len;
228
229 if ((b & 0x80) == 0){
230 len = b;
231 ++ptr;
232 } else if ((b & 0x40) == 0){
233 len = ((b & 0x3f) << 8 | ptr [1]);
234 ptr += 2;
235 } else if (b != 0xff) {
236 len = ((b & 0x1f) << 24) |
237 (ptr [1] << 16) |
238 (ptr [2] << 8) |
239 ptr [3];
240 ptr += 4;
241 }
242 else {
243 len = (ptr [1] << 24) | (ptr [2] << 16) | (ptr [3] << 8) | ptr [4];
244 ptr += 5;
245 }
246 if (rptr)
247 *rptr = ptr;
248
249 //printf ("DECODE: %d.\n", len);
250 return len;
251 }
252
253 /*
254 * mono_aot_get_method:
255 *
256 * Decode an offset table emitted by emit_offset_table (), returning the INDEXth
257 * entry.
258 */
259 static guint32
260 mono_aot_get_offset (guint32 *table, int index)
261 {
262 int i, group, ngroups, index_entry_size;
263 int start_offset, offset, noffsets, group_size;
264 guint8 *data_start, *p;
265 guint32 *index32 = NULL;
266 guint16 *index16 = NULL;
267
268 noffsets = table [0];
269 group_size = table [1];
270 ngroups = table [2];
271 index_entry_size = table [3];
272 group = index / group_size;
273
274 if (index_entry_size == 2) {
275 index16 = (guint16*)&table [4];
276 data_start = (guint8*)&index16 [ngroups];
277 p = data_start + index16 [group];
278 } else {
279 index32 = (guint32*)&table [4];
280 data_start = (guint8*)&index32 [ngroups];
281 p = data_start + index32 [group];
282 }
283
284 /* offset will contain the value of offsets [group * group_size] */
285 offset = start_offset = decode_value (p, &p);
286 for (i = group * group_size + 1; i <= index; ++i) {
287 offset += decode_value (p, &p);
288 }
289
290 //printf ("Offset lookup: %d -> %d, start=%d, p=%d\n", index, offset, start_offset, table [3 + group]);
291
292 return offset;
293 }
294
295 static MonoMethod*
296 decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf);
297
298 static MonoClass*
299 decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf);
300
301 static MonoGenericInst*
302 decode_generic_inst (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
303 {
304 int type_argc, i;
305 MonoType **type_argv;
306 MonoGenericInst *inst;
307 guint8 *p = buf;
308
309 type_argc = decode_value (p, &p);
310 type_argv = g_new0 (MonoType*, type_argc);
311
312 for (i = 0; i < type_argc; ++i) {
313 MonoClass *pclass = decode_klass_ref (module, p, &p);
314 if (!pclass) {
315 g_free (type_argv);
316 return NULL;
317 }
318 type_argv [i] = &pclass->byval_arg;
319 }
320
321 inst = mono_metadata_get_generic_inst (type_argc, type_argv);
322 g_free (type_argv);
323
324 *endbuf = p;
325
326 return inst;
327 }
328
329 static gboolean
330 decode_generic_context (MonoAotModule *module, MonoGenericContext *ctx, guint8 *buf, guint8 **endbuf)
331 {
332 gboolean has_class_inst, has_method_inst;
333 guint8 *p = buf;
334
335 has_class_inst = decode_value (p, &p);
336 if (has_class_inst) {
337 ctx->class_inst = decode_generic_inst (module, p, &p);
338 if (!ctx->class_inst)
339 return FALSE;
340 }
341 has_method_inst = decode_value (p, &p);
342 if (has_method_inst) {
343 ctx->method_inst = decode_generic_inst (module, p, &p);
344 if (!ctx->method_inst)
345 return FALSE;
346 }
347
348 *endbuf = p;
349 return TRUE;
350 }
351
352 static MonoClass*
353 decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
354 {
355 MonoImage *image;
356 MonoClass *klass, *eklass;
357 guint32 token, rank;
358 guint8 *p = buf;
359
360 token = decode_value (p, &p);
361 if (token == 0) {
362 *endbuf = p;
363 return NULL;
364 }
365 if (mono_metadata_token_table (token) == 0) {
366 image = load_image (module, decode_value (p, &p), TRUE);
367 if (!image)
368 return NULL;
369 klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF + token);
370 } else if (mono_metadata_token_table (token) == MONO_TABLE_TYPESPEC) {
371 if (token == MONO_TOKEN_TYPE_SPEC) {
372 MonoTypeEnum type = decode_value (p, &p);
373
374 if (type == MONO_TYPE_GENERICINST) {
375 MonoClass *gclass;
376 MonoGenericContext ctx;
377 MonoType *type;
378
379 gclass = decode_klass_ref (module, p, &p);
380 if (!gclass)
381 return NULL;
382 g_assert (gclass->generic_container);
383
384 memset (&ctx, 0, sizeof (ctx));
385 ctx.class_inst = decode_generic_inst (module, p, &p);
386 if (!ctx.class_inst)
387 return NULL;
388 type = mono_class_inflate_generic_type (&gclass->byval_arg, &ctx);
389 klass = mono_class_from_mono_type (type);
390 mono_metadata_free_type (type);
391 } else if ((type == MONO_TYPE_VAR) || (type == MONO_TYPE_MVAR)) {
392 MonoType *t;
393 MonoGenericContainer *container;
394
395 int num = decode_value (p, &p);
396 gboolean is_method = decode_value (p, &p);
397
398 if (is_method) {
399 MonoMethod *method_def;
400 g_assert (type == MONO_TYPE_MVAR);
401 method_def = decode_resolve_method_ref (module, p, &p);
402 if (!method_def)
403 return NULL;
404
405 container = mono_method_get_generic_container (method_def);
406 } else {
407 MonoClass *class_def;
408 g_assert (type == MONO_TYPE_VAR);
409 class_def = decode_klass_ref (module, p, &p);
410 if (!class_def)
411 return NULL;
412
413 container = class_def->generic_container;
414 }
415
416 g_assert (container);
417
418 // FIXME: Memory management
419 t = g_new0 (MonoType, 1);
420 t->type = type;
421 t->data.generic_param = mono_generic_container_get_param (container, num);
422
423 // FIXME: Maybe use types directly to avoid
424 // the overhead of creating MonoClass-es
425 klass = mono_class_from_mono_type (t);
426
427 g_free (t);
428 } else {
429 g_assert_not_reached ();
430 }
431 } else {
432 image = load_image (module, decode_value (p, &p), TRUE);
433 if (!image)
434 return NULL;
435 klass = mono_class_get (image, token);
436 }
437 } else if (token == MONO_TOKEN_TYPE_DEF) {
438 /* Array */
439 image = load_image (module, decode_value (p, &p), TRUE);
440 if (!image)
441 return NULL;
442 rank = decode_value (p, &p);
443 eklass = decode_klass_ref (module, p, &p);
444 klass = mono_array_class_get (eklass, rank);
445 } else {
446 g_assert_not_reached ();
447 }
448 g_assert (klass);
449
450 *endbuf = p;
451 return klass;
452 }
453
454 static MonoClassField*
455 decode_field_info (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
456 {
457 MonoClass *klass = decode_klass_ref (module, buf, &buf);
458 guint32 token;
459 guint8 *p = buf;
460
461 if (!klass)
462 return NULL;
463
464 token = MONO_TOKEN_FIELD_DEF + decode_value (p, &p);
465
466 *endbuf = p;
467
468 return mono_class_get_field (klass, token);
469 }
470
471 /* Stores information returned by decode_method_ref () */
472 typedef struct {
473 MonoImage *image;
474 guint32 token;
475 MonoMethod *method;
476 gboolean no_aot_trampoline;
477 } MethodRef;
478
479 /*
480 * decode_method_ref_with_target:
481 *
482 * Decode a method reference, storing the image/token into a MethodRef structure.
483 * This avoids loading metadata for the method if the caller does not need it. If the method has
484 * no token, then it is loaded from metadata and ref->method is set to the method instance.
485 * If TARGET is non-NULL, abort decoding if it can be determined that the decoded method couldn't resolve to TARGET, and return FALSE.
486 */
487 static gboolean
488 decode_method_ref_with_target (MonoAotModule *module, MethodRef *ref, MonoMethod *target, guint8 *buf, guint8 **endbuf)
489 {
490 guint32 image_index, value;
491 MonoImage *image = NULL;
492 guint8 *p = buf;
493
494 memset (ref, 0, sizeof (MethodRef));
495
496 value = decode_value (p, &p);
497 image_index = value >> 24;
498
499 if (image_index == MONO_AOT_METHODREF_NO_AOT_TRAMPOLINE) {
500 ref->no_aot_trampoline = TRUE;
501 value = decode_value (p, &p);
502 image_index = value >> 24;
503 }
504
505 if (image_index < MONO_AOT_METHODREF_MIN || image_index == MONO_AOT_METHODREF_METHODSPEC || image_index == MONO_AOT_METHODREF_GINST) {
506 if (target && target->wrapper_type)
507 return FALSE;
508 }
509
510 if (image_index == MONO_AOT_METHODREF_WRAPPER) {
511 guint32 wrapper_type;
512
513 wrapper_type = decode_value (p, &p);
514
515 if (target && target->wrapper_type != wrapper_type)
516 return FALSE;
517
518 /* Doesn't matter */
519 image = mono_defaults.corlib;
520
521 switch (wrapper_type) {
522 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK: {
523 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
524
525 if (!m)
526 return FALSE;
527 mono_class_init (m->klass);
528 ref->method = mono_marshal_get_remoting_invoke_with_check (m);
529 break;
530 }
531 case MONO_WRAPPER_PROXY_ISINST: {
532 MonoClass *klass = decode_klass_ref (module, p, &p);
533 if (!klass)
534 return FALSE;
535 ref->method = mono_marshal_get_proxy_cancast (klass);
536 break;
537 }
538 case MONO_WRAPPER_LDFLD:
539 case MONO_WRAPPER_LDFLDA:
540 case MONO_WRAPPER_STFLD:
541 case MONO_WRAPPER_ISINST: {
542 MonoClass *klass = decode_klass_ref (module, p, &p);
543 if (!klass)
544 return FALSE;
545 if (wrapper_type == MONO_WRAPPER_LDFLD)
546 ref->method = mono_marshal_get_ldfld_wrapper (&klass->byval_arg);
547 else if (wrapper_type == MONO_WRAPPER_LDFLDA)
548 ref->method = mono_marshal_get_ldflda_wrapper (&klass->byval_arg);
549 else if (wrapper_type == MONO_WRAPPER_STFLD)
550 ref->method = mono_marshal_get_stfld_wrapper (&klass->byval_arg);
551 else if (wrapper_type == MONO_WRAPPER_ISINST)
552 ref->method = mono_marshal_get_isinst (klass);
553 else
554 g_assert_not_reached ();
555 break;
556 }
557 case MONO_WRAPPER_LDFLD_REMOTE:
558 ref->method = mono_marshal_get_ldfld_remote_wrapper (NULL);
559 break;
560 case MONO_WRAPPER_STFLD_REMOTE:
561 ref->method = mono_marshal_get_stfld_remote_wrapper (NULL);
562 break;
563 case MONO_WRAPPER_ALLOC: {
564 int atype = decode_value (p, &p);
565
566 ref->method = mono_gc_get_managed_allocator_by_type (atype);
567 break;
568 }
569 case MONO_WRAPPER_WRITE_BARRIER:
570 ref->method = mono_gc_get_write_barrier ();
571 break;
572 case MONO_WRAPPER_STELEMREF:
573 ref->method = mono_marshal_get_stelemref ();
574 break;
575 case MONO_WRAPPER_SYNCHRONIZED: {
576 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
577
578 if (!m)
579 return FALSE;
580 ref->method = mono_marshal_get_synchronized_wrapper (m);
581 break;
582 }
583 case MONO_WRAPPER_UNKNOWN: {
584 MonoMethodDesc *desc;
585 MonoMethod *orig_method;
586 int subtype = decode_value (p, &p);
587
588 if (subtype == MONO_AOT_WRAPPER_PTR_TO_STRUCTURE || subtype == MONO_AOT_WRAPPER_STRUCTURE_TO_PTR) {
589 MonoClass *klass = decode_klass_ref (module, p, &p);
590
591 if (!klass)
592 return FALSE;
593
594 g_assert (target);
595 if (klass != target->klass)
596 return FALSE;
597
598 if (subtype == MONO_AOT_WRAPPER_PTR_TO_STRUCTURE) {
599 if (strcmp (target->name, "PtrToStructure"))
600 return FALSE;
601 ref->method = mono_marshal_get_ptr_to_struct (klass);
602 } else {
603 if (strcmp (target->name, "StructureToPtr"))
604 return FALSE;
605 ref->method = mono_marshal_get_struct_to_ptr (klass);
606 }
607 } else {
608 if (subtype == MONO_AOT_WRAPPER_MONITOR_ENTER)
609 desc = mono_method_desc_new ("Monitor:Enter", FALSE);
610 else if (subtype == MONO_AOT_WRAPPER_MONITOR_EXIT)
611 desc = mono_method_desc_new ("Monitor:Exit", FALSE);
612 else if (subtype == MONO_AOT_WRAPPER_MONITOR_ENTER_V4)
613 desc = mono_method_desc_new ("Monitor:Enter(object,bool&)", 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 ref->method = mono_monitor_get_fast_path (orig_method);
620 }
621 break;
622 }
623 case MONO_WRAPPER_RUNTIME_INVOKE: {
624 /* Direct wrapper */
625 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
626
627 if (!m)
628 return FALSE;
629 ref->method = mono_marshal_get_runtime_invoke (m, FALSE);
630 break;
631 }
632 case MONO_WRAPPER_MANAGED_TO_MANAGED: {
633 int subtype = decode_value (p, &p);
634
635 if (subtype == MONO_AOT_WRAPPER_ELEMENT_ADDR) {
636 int rank = decode_value (p, &p);
637 int elem_size = decode_value (p, &p);
638
639 ref->method = mono_marshal_get_array_address (rank, elem_size);
640 } else {
641 g_assert_not_reached ();
642 }
643 break;
644 }
645 case MONO_WRAPPER_MANAGED_TO_NATIVE: {
646 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
647
648 if (!m)
649 return FALSE;
650
651 /* This should only happen when looking for an extra method */
652 g_assert (target);
653 if (mono_marshal_method_from_wrapper (target) == m)
654 ref->method = target;
655 else
656 return FALSE;
657 break;
658 }
659 case MONO_WRAPPER_CASTCLASS: {
660 int subtype = decode_value (p, &p);
661
662 if (subtype == MONO_AOT_WRAPPER_CASTCLASS_WITH_CACHE)
663 ref->method = mono_marshal_get_castclass_with_cache ();
664 else if (subtype == MONO_AOT_WRAPPER_ISINST_WITH_CACHE)
665 ref->method = mono_marshal_get_isinst_with_cache ();
666 else
667 g_assert_not_reached ();
668 break;
669 }
670 default:
671 g_assert_not_reached ();
672 }
673 } else if (image_index == MONO_AOT_METHODREF_WRAPPER_NAME) {
674 if (target)
675 return FALSE;
676 /* Can't decode these */
677 g_assert_not_reached ();
678 } else if (image_index == MONO_AOT_METHODREF_METHODSPEC) {
679 image_index = decode_value (p, &p);
680 ref->token = decode_value (p, &p);
681
682 image = load_image (module, image_index, TRUE);
683 if (!image)
684 return FALSE;
685 } else if (image_index == MONO_AOT_METHODREF_GINST) {
686 MonoClass *klass;
687 MonoGenericContext ctx;
688
689 /*
690 * These methods do not have a token which resolves them, so we
691 * resolve them immediately.
692 */
693 klass = decode_klass_ref (module, p, &p);
694 if (!klass)
695 return FALSE;
696
697 if (target && target->klass != klass)
698 return FALSE;
699
700 image_index = decode_value (p, &p);
701 ref->token = decode_value (p, &p);
702
703 image = load_image (module, image_index, TRUE);
704 if (!image)
705 return FALSE;
706
707 ref->method = mono_get_method_full (image, ref->token, NULL, NULL);
708 if (!ref->method)
709 return FALSE;
710
711 memset (&ctx, 0, sizeof (ctx));
712
713 if (FALSE && klass->generic_class) {
714 ctx.class_inst = klass->generic_class->context.class_inst;
715 ctx.method_inst = NULL;
716
717 ref->method = mono_class_inflate_generic_method_full (ref->method, klass, &ctx);
718 }
719
720 memset (&ctx, 0, sizeof (ctx));
721
722 if (!decode_generic_context (module, &ctx, p, &p))
723 return FALSE;
724
725 ref->method = mono_class_inflate_generic_method_full (ref->method, klass, &ctx);
726 } else if (image_index == MONO_AOT_METHODREF_ARRAY) {
727 MonoClass *klass;
728 int method_type;
729
730 klass = decode_klass_ref (module, p, &p);
731 if (!klass)
732 return FALSE;
733 method_type = decode_value (p, &p);
734 switch (method_type) {
735 case 0:
736 ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank);
737 break;
738 case 1:
739 ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank * 2);
740 break;
741 case 2:
742 ref->method = mono_class_get_method_from_name (klass, "Get", -1);
743 break;
744 case 3:
745 ref->method = mono_class_get_method_from_name (klass, "Address", -1);
746 break;
747 case 4:
748 ref->method = mono_class_get_method_from_name (klass, "Set", -1);
749 break;
750 default:
751 g_assert_not_reached ();
752 }
753 } else {
754 g_assert (image_index < MONO_AOT_METHODREF_MIN);
755 ref->token = MONO_TOKEN_METHOD_DEF | (value & 0xffffff);
756
757 image = load_image (module, image_index, TRUE);
758 if (!image)
759 return FALSE;
760 }
761
762 *endbuf = p;
763
764 ref->image = image;
765
766 return TRUE;
767 }
768
769 static gboolean
770 decode_method_ref (MonoAotModule *module, MethodRef *ref, guint8 *buf, guint8 **endbuf)
771 {
772 return decode_method_ref_with_target (module, ref, NULL, buf, endbuf);
773 }
774
775 /*
776 * decode_resolve_method_ref_with_target:
777 *
778 * Similar to decode_method_ref, but resolve and return the method itself.
779 */
780 static MonoMethod*
781 decode_resolve_method_ref_with_target (MonoAotModule *module, MonoMethod *target, guint8 *buf, guint8 **endbuf)
782 {
783 MethodRef ref;
784 gboolean res;
785
786 res = decode_method_ref_with_target (module, &ref, target, buf, endbuf);
787 if (!res)
788 return NULL;
789 if (ref.method)
790 return ref.method;
791 if (!ref.image)
792 return NULL;
793 return mono_get_method (ref.image, ref.token, NULL);
794 }
795
796 static MonoMethod*
797 decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
798 {
799 return decode_resolve_method_ref_with_target (module, NULL, buf, endbuf);
800 }
801
802 static void
803 create_cache_structure (void)
804 {
805 const char *home;
806 char *tmp;
807 int err;
808
809 home = g_get_home_dir ();
810 if (!home)
811 return;
812
813 tmp = g_build_filename (home, ".mono", NULL);
814 if (!g_file_test (tmp, G_FILE_TEST_IS_DIR)) {
815 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT creating directory %s", tmp);
816 #ifdef HOST_WIN32
817 err = mkdir (tmp);
818 #else
819 err = mkdir (tmp, 0777);
820 #endif
821 if (err) {
822 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed: %s", g_strerror (errno));
823 g_free (tmp);
824 return;
825 }
826 }
827 g_free (tmp);
828 tmp = g_build_filename (home, ".mono", "aot-cache", NULL);
829 if (!g_file_test (tmp, G_FILE_TEST_IS_DIR)) {
830 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT creating directory %s", tmp);
831 #ifdef HOST_WIN32
832 err = mkdir (tmp);
833 #else
834 err = mkdir (tmp, 0777);
835 #endif
836 if (err) {
837 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed: %s", g_strerror (errno));
838 g_free (tmp);
839 return;
840 }
841 }
842 g_free (tmp);
843 }
844
845 /*
846 * load_aot_module_from_cache:
847 *
848 * Experimental code to AOT compile loaded assemblies on demand.
849 *
850 * FIXME:
851 * - Add environment variable MONO_AOT_CACHE_OPTIONS
852 * - Add options for controlling the cache size
853 * - Handle full cache by deleting old assemblies lru style
854 * - Add options for excluding assemblies during development
855 * - Maybe add a threshold after an assembly is AOT compiled
856 * - invoking a new mono process is a security risk
857 * - recompile the AOT module if one of its dependencies changes
858 */
859 static MonoDl*
860 load_aot_module_from_cache (MonoAssembly *assembly, char **aot_name)
861 {
862 char *fname, *cmd, *tmp2, *aot_options;
863 const char *home;
864 MonoDl *module;
865 gboolean res;
866 gchar *out, *err;
867 gint exit_status;
868
869 *aot_name = NULL;
870
871 if (assembly->image->dynamic)
872 return NULL;
873
874 create_cache_structure ();
875
876 home = g_get_home_dir ();
877
878 tmp2 = g_strdup_printf ("%s-%s%s", assembly->image->assembly_name, assembly->image->guid, SHARED_EXT);
879 fname = g_build_filename (home, ".mono", "aot-cache", tmp2, NULL);
880 *aot_name = fname;
881 g_free (tmp2);
882
883 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT trying to load from cache: '%s'.", fname);
884 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
885
886 if (!module) {
887 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT not found.");
888
889 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT precompiling assembly '%s'... ", assembly->image->name);
890
891 aot_options = g_strdup_printf ("outfile=%s", fname);
892
893 if (spawn_compiler) {
894 /* FIXME: security */
895 /* FIXME: Has to pass the assembly loading path to the child process */
896 cmd = g_strdup_printf ("mono -O=all --aot=%s %s", aot_options, assembly->image->name);
897
898 res = g_spawn_command_line_sync (cmd, &out, &err, &exit_status, NULL);
899
900 #if !defined(HOST_WIN32) && !defined(__ppc__) && !defined(__ppc64__) && !defined(__powerpc__)
901 if (res) {
902 if (!WIFEXITED (exit_status) && (WEXITSTATUS (exit_status) == 0))
903 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT failed: %s.", err);
904 else
905 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT succeeded.");
906 g_free (out);
907 g_free (err);
908 }
909 #endif
910 g_free (cmd);
911 } else {
912 res = mono_compile_assembly (assembly, mono_parse_default_optimizations (NULL), aot_options);
913 if (!res) {
914 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT failed.");
915 } else {
916 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT succeeded.");
917 }
918 }
919
920 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
921
922 g_free (aot_options);
923 }
924
925 return module;
926 }
927
928 static void
929 find_symbol (MonoDl *module, gpointer *globals, const char *name, gpointer *value)
930 {
931 if (globals) {
932 int global_index;
933 guint16 *table, *entry;
934 guint16 table_size;
935 guint32 hash;
936
937 /* The first entry points to the hash */
938 table = globals [0];
939 globals ++;
940
941 table_size = table [0];
942 table ++;
943
944 hash = mono_metadata_str_hash (name) % table_size;
945
946 entry = &table [hash * 2];
947
948 /* Search the hash for the index into the globals table */
949 global_index = -1;
950 while (entry [0] != 0) {
951 guint32 index = entry [0] - 1;
952 guint32 next = entry [1];
953
954 //printf ("X: %s %s\n", (char*)globals [index * 2], name);
955
956 if (!strcmp (globals [index * 2], name)) {
957 global_index = index;
958 break;
959 }
960
961 if (next != 0) {
962 entry = &table [next * 2];
963 } else {
964 break;
965 }
966 }
967
968 if (global_index != -1)
969 *value = globals [global_index * 2 + 1];
970 else
971 *value = NULL;
972 } else {
973 char *err = mono_dl_symbol (module, name, value);
974
975 if (err)
976 g_free (err);
977 }
978 }
979
980 static gboolean
981 check_usable (MonoAssembly *assembly, MonoAotFileInfo *info, char **out_msg)
982 {
983 char *build_info;
984 char *msg = NULL;
985 gboolean usable = TRUE;
986 gboolean full_aot;
987 guint8 *blob;
988
989 if (strcmp (assembly->image->guid, info->assembly_guid)) {
990 msg = g_strdup_printf ("doesn't match assembly");
991 usable = FALSE;
992 }
993
994 build_info = mono_get_runtime_build_info ();
995 if (strlen (info->runtime_version) > 0 && strcmp (info->runtime_version, build_info)) {
996 msg = g_strdup_printf ("compiled against runtime version '%s' while this runtime has version '%s'", info->runtime_version, build_info);
997 usable = FALSE;
998 }
999 g_free (build_info);
1000
1001 full_aot = info->flags & MONO_AOT_FILE_FLAG_FULL_AOT;
1002
1003 if (mono_aot_only && !full_aot) {
1004 msg = g_strdup_printf ("not compiled with --aot=full");
1005 usable = FALSE;
1006 }
1007 if (!mono_aot_only && full_aot) {
1008 msg = g_strdup_printf ("compiled with --aot=full");
1009 usable = FALSE;
1010 }
1011 #ifdef TARGET_ARM
1012 /* mono_arch_find_imt_method () requires this */
1013 if ((info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM) && !mono_use_llvm) {
1014 msg = g_strdup_printf ("compiled against LLVM");
1015 usable = FALSE;
1016 }
1017 if (!(info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM) && mono_use_llvm) {
1018 msg = g_strdup_printf ("not compiled against LLVM");
1019 usable = FALSE;
1020 }
1021 #endif
1022 if (mini_get_debug_options ()->mdb_optimizations && !(info->flags & MONO_AOT_FILE_FLAG_DEBUG) && !full_aot) {
1023 msg = g_strdup_printf ("not compiled for debugging");
1024 usable = FALSE;
1025 }
1026
1027 blob = info->blob;
1028
1029 if (info->gc_name_index != -1) {
1030 char *gc_name = (char*)&blob [info->gc_name_index];
1031 const char *current_gc_name = mono_gc_get_gc_name ();
1032
1033 if (strcmp (current_gc_name, gc_name) != 0) {
1034 msg = g_strdup_printf ("compiled against GC %s, while the current runtime uses GC %s.\n", gc_name, current_gc_name);
1035 usable = FALSE;
1036 }
1037 }
1038
1039 *out_msg = msg;
1040 return usable;
1041 }
1042
1043 static void
1044 load_aot_module (MonoAssembly *assembly, gpointer user_data)
1045 {
1046 char *aot_name;
1047 MonoAotModule *amodule;
1048 MonoDl *sofile;
1049 gboolean usable = TRUE;
1050 char *version_symbol = NULL;
1051 char *msg = NULL;
1052 gpointer *globals = NULL;
1053 MonoAotFileInfo *info = NULL;
1054 int i, version;
1055 guint8 *blob;
1056 gboolean do_load_image = TRUE;
1057
1058 if (mono_compile_aot)
1059 return;
1060
1061 if (assembly->image->aot_module)
1062 /*
1063 * Already loaded. This can happen because the assembly loading code might invoke
1064 * the assembly load hooks multiple times for the same assembly.
1065 */
1066 return;
1067
1068 if (assembly->image->dynamic)
1069 return;
1070
1071 if (mono_security_get_mode () == MONO_SECURITY_MODE_CAS)
1072 return;
1073
1074 mono_aot_lock ();
1075 if (static_aot_modules)
1076 info = g_hash_table_lookup (static_aot_modules, assembly->aname.name);
1077 else
1078 info = NULL;
1079 mono_aot_unlock ();
1080
1081 if (info) {
1082 /* Statically linked AOT module */
1083 sofile = NULL;
1084 aot_name = g_strdup_printf ("%s", assembly->aname.name);
1085 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "Found statically linked AOT module '%s'.\n", aot_name);
1086 globals = info->globals;
1087 } else {
1088 if (use_aot_cache)
1089 sofile = load_aot_module_from_cache (assembly, &aot_name);
1090 else {
1091 char *err;
1092 aot_name = g_strdup_printf ("%s%s", assembly->image->name, SHARED_EXT);
1093
1094 sofile = mono_dl_open (aot_name, MONO_DL_LAZY, &err);
1095
1096 if (!sofile) {
1097 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed to load AOT module %s: %s\n", aot_name, err);
1098 g_free (err);
1099 }
1100 }
1101 }
1102
1103 if (!sofile && !globals) {
1104 if (mono_aot_only) {
1105 fprintf (stderr, "Failed to load AOT module '%s' in aot-only mode.\n", aot_name);
1106 exit (1);
1107 }
1108 g_free (aot_name);
1109 return;
1110 }
1111
1112 if (!info) {
1113 find_symbol (sofile, globals, "mono_aot_version", (gpointer *) &version_symbol);
1114 find_symbol (sofile, globals, "mono_aot_file_info", (gpointer*)&info);
1115 }
1116
1117 if (version_symbol) {
1118 /* Old file format */
1119 version = atoi (version_symbol);
1120 } else {
1121 g_assert (info);
1122 version = info->version;
1123 }
1124
1125 if (version != MONO_AOT_FILE_VERSION) {
1126 msg = g_strdup_printf ("wrong file format version (expected %d got %d)", MONO_AOT_FILE_VERSION, version);
1127 usable = FALSE;
1128 } else {
1129 usable = check_usable (assembly, info, &msg);
1130 }
1131
1132 if (!usable) {
1133 if (mono_aot_only) {
1134 fprintf (stderr, "Failed to load AOT module '%s' while running in aot-only mode: %s.\n", aot_name, msg);
1135 exit (1);
1136 } else {
1137 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is unusable: %s.\n", aot_name, msg);
1138 }
1139 g_free (msg);
1140 g_free (aot_name);
1141 if (sofile)
1142 mono_dl_close (sofile);
1143 assembly->image->aot_module = NULL;
1144 return;
1145 }
1146
1147 /* Sanity check */
1148 g_assert (info->double_align == __alignof__ (double));
1149 g_assert (info->long_align == __alignof__ (gint64));
1150
1151 blob = info->blob;
1152
1153 amodule = g_new0 (MonoAotModule, 1);
1154 amodule->aot_name = aot_name;
1155 amodule->assembly = assembly;
1156
1157 memcpy (&amodule->info, info, sizeof (*info));
1158
1159 amodule->got = amodule->info.got;
1160 amodule->got [0] = assembly->image;
1161 amodule->globals = globals;
1162 amodule->sofile = sofile;
1163 amodule->method_to_code = g_hash_table_new (mono_aligned_addr_hash, NULL);
1164 amodule->blob = blob;
1165
1166 /* Read image table */
1167 {
1168 guint32 table_len, i;
1169 char *table = NULL;
1170
1171 table = info->image_table;
1172 g_assert (table);
1173
1174 table_len = *(guint32*)table;
1175 table += sizeof (guint32);
1176 amodule->image_table = g_new0 (MonoImage*, table_len);
1177 amodule->image_names = g_new0 (MonoAssemblyName, table_len);
1178 amodule->image_guids = g_new0 (char*, table_len);
1179 amodule->image_table_len = table_len;
1180 for (i = 0; i < table_len; ++i) {
1181 MonoAssemblyName *aname = &(amodule->image_names [i]);
1182
1183 aname->name = g_strdup (table);
1184 table += strlen (table) + 1;
1185 amodule->image_guids [i] = g_strdup (table);
1186 table += strlen (table) + 1;
1187 if (table [0] != 0)
1188 aname->culture = g_strdup (table);
1189 table += strlen (table) + 1;
1190 memcpy (aname->public_key_token, table, strlen (table) + 1);
1191 table += strlen (table) + 1;
1192
1193 table = ALIGN_PTR_TO (table, 8);
1194 aname->flags = *(guint32*)table;
1195 table += 4;
1196 aname->major = *(guint32*)table;
1197 table += 4;
1198 aname->minor = *(guint32*)table;
1199 table += 4;
1200 aname->build = *(guint32*)table;
1201 table += 4;
1202 aname->revision = *(guint32*)table;
1203 table += 4;
1204 }
1205 }
1206
1207 amodule->code_offsets = info->code_offsets;
1208 amodule->code = info->methods;
1209 #ifdef TARGET_ARM
1210 /* Mask out thumb interop bit */
1211 amodule->code = (void*)((mgreg_t)amodule->code & ~1);
1212 #endif
1213 amodule->code_end = info->methods_end;
1214 amodule->method_info_offsets = info->method_info_offsets;
1215 amodule->ex_info_offsets = info->ex_info_offsets;
1216 amodule->class_info_offsets = info->class_info_offsets;
1217 amodule->class_name_table = info->class_name_table;
1218 amodule->extra_method_table = info->extra_method_table;
1219 amodule->extra_method_info_offsets = info->extra_method_info_offsets;
1220 amodule->got_info_offsets = info->got_info_offsets;
1221 amodule->unwind_info = info->unwind_info;
1222 amodule->mem_end = info->mem_end;
1223 amodule->mem_begin = amodule->code;
1224 amodule->plt = info->plt;
1225 amodule->plt_end = info->plt_end;
1226 amodule->mono_eh_frame = info->mono_eh_frame;
1227 amodule->trampolines [MONO_AOT_TRAMP_SPECIFIC] = info->specific_trampolines;
1228 amodule->trampolines [MONO_AOT_TRAMP_STATIC_RGCTX] = info->static_rgctx_trampolines;
1229 amodule->trampolines [MONO_AOT_TRAMP_IMT_THUNK] = info->imt_thunks;
1230 amodule->thumb_end = info->thumb_end;
1231
1232 if (make_unreadable) {
1233 #ifndef TARGET_WIN32
1234 guint8 *addr;
1235 guint8 *page_start, *page_end;
1236 int err, len;
1237
1238 addr = amodule->mem_begin;
1239 len = amodule->mem_end - amodule->mem_begin;
1240
1241 /* Round down in both directions to avoid modifying data which is not ours */
1242 page_start = (guint8 *) (((gssize) (addr)) & ~ (mono_pagesize () - 1)) + mono_pagesize ();
1243 page_end = (guint8 *) (((gssize) (addr + len)) & ~ (mono_pagesize () - 1));
1244 if (page_end > page_start) {
1245 err = mono_mprotect (page_start, (page_end - page_start), MONO_MMAP_NONE);
1246 g_assert (err == 0);
1247 }
1248 #endif
1249 }
1250
1251 mono_aot_lock ();
1252
1253 aot_code_low_addr = MIN (aot_code_low_addr, (gsize)amodule->code);
1254 aot_code_high_addr = MAX (aot_code_high_addr, (gsize)amodule->code_end);
1255
1256 g_hash_table_insert (aot_modules, assembly, amodule);
1257 mono_aot_unlock ();
1258
1259 mono_jit_info_add_aot_module (assembly->image, amodule->code, amodule->code_end);
1260
1261 assembly->image->aot_module = amodule;
1262
1263 if (mono_aot_only) {
1264 if (mono_defaults.corlib) {
1265 /* The second got slot contains the mscorlib got addr */
1266 MonoAotModule *mscorlib_amodule = mono_defaults.corlib->aot_module;
1267
1268 amodule->got [1] = mscorlib_amodule->got;
1269 } else {
1270 amodule->got [1] = amodule->got;
1271 }
1272 }
1273
1274 if (mono_gc_is_moving ()) {
1275 MonoJumpInfo ji;
1276
1277 memset (&ji, 0, sizeof (ji));
1278 ji.type = MONO_PATCH_INFO_GC_CARD_TABLE_ADDR;
1279
1280 amodule->got [2] = mono_resolve_patch_target (NULL, mono_get_root_domain (), NULL, &ji, FALSE);
1281 }
1282
1283 /*
1284 * Since we store methoddef and classdef tokens when referring to methods/classes in
1285 * referenced assemblies, we depend on the exact versions of the referenced assemblies.
1286 * MS calls this 'hard binding'. This means we have to load all referenced assemblies
1287 * non-lazily, since we can't handle out-of-date errors later.
1288 * The cached class info also depends on the exact assemblies.
1289 */
1290 #if defined(__native_client__)
1291 /* TODO: Don't 'load_image' on mscorlib due to a */
1292 /* recursive loading problem. This should be */
1293 /* removed if mscorlib is loaded from disk. */
1294 if (strncmp(assembly->aname.name, "mscorlib", 8)) {
1295 do_load_image = TRUE;
1296 } else {
1297 do_load_image = FALSE;
1298 }
1299 #endif
1300 if (do_load_image) {
1301 for (i = 0; i < amodule->image_table_len; ++i)
1302 load_image (amodule, i, FALSE);
1303 }
1304
1305 if (amodule->out_of_date) {
1306 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);
1307 if (mono_aot_only) {
1308 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);
1309 exit (1);
1310 }
1311 }
1312 else
1313 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT loaded AOT Module for %s.\n", assembly->image->name);
1314 }
1315
1316 /*
1317 * mono_aot_register_globals:
1318 *
1319 * This is called by the ctor function in AOT images compiled with the
1320 * 'no-dlsym' option.
1321 */
1322 void
1323 mono_aot_register_globals (gpointer *globals)
1324 {
1325 g_assert_not_reached ();
1326 }
1327
1328 /*
1329 * mono_aot_register_module:
1330 *
1331 * This should be called by embedding code to register AOT modules statically linked
1332 * into the executable. AOT_INFO should be the value of the
1333 * 'mono_aot_module_<ASSEMBLY_NAME>_info' global symbol from the AOT module.
1334 */
1335 void
1336 mono_aot_register_module (gpointer *aot_info)
1337 {
1338 gpointer *globals;
1339 char *aname;
1340 MonoAotFileInfo *info = (gpointer)aot_info;
1341
1342 g_assert (info->version == MONO_AOT_FILE_VERSION);
1343
1344 globals = info->globals;
1345 g_assert (globals);
1346
1347 aname = info->assembly_name;
1348
1349 /* This could be called before startup */
1350 if (aot_modules)
1351 mono_aot_lock ();
1352
1353 if (!static_aot_modules)
1354 static_aot_modules = g_hash_table_new (g_str_hash, g_str_equal);
1355
1356 g_hash_table_insert (static_aot_modules, aname, info);
1357
1358 if (aot_modules)
1359 mono_aot_unlock ();
1360 }
1361
1362 void
1363 mono_aot_init (void)
1364 {
1365 InitializeCriticalSection (&aot_mutex);
1366 aot_modules = g_hash_table_new (NULL, NULL);
1367
1368 mono_install_assembly_load_hook (load_aot_module, NULL);
1369
1370 if (g_getenv ("MONO_LASTAOT"))
1371 mono_last_aot_method = atoi (g_getenv ("MONO_LASTAOT"));
1372 if (g_getenv ("MONO_AOT_CACHE"))
1373 use_aot_cache = TRUE;
1374 }
1375
1376 void
1377 mono_aot_cleanup (void)
1378 {
1379 if (aot_jit_icall_hash)
1380 g_hash_table_destroy (aot_jit_icall_hash);
1381 if (aot_modules)
1382 g_hash_table_destroy (aot_modules);
1383 }
1384
1385 static gboolean
1386 decode_cached_class_info (MonoAotModule *module, MonoCachedClassInfo *info, guint8 *buf, guint8 **endbuf)
1387 {
1388 guint32 flags;
1389 MethodRef ref;
1390 gboolean res;
1391
1392 info->vtable_size = decode_value (buf, &buf);
1393 if (info->vtable_size == -1)
1394 /* Generic type */
1395 return FALSE;
1396 flags = decode_value (buf, &buf);
1397 info->ghcimpl = (flags >> 0) & 0x1;
1398 info->has_finalize = (flags >> 1) & 0x1;
1399 info->has_cctor = (flags >> 2) & 0x1;
1400 info->has_nested_classes = (flags >> 3) & 0x1;
1401 info->blittable = (flags >> 4) & 0x1;
1402 info->has_references = (flags >> 5) & 0x1;
1403 info->has_static_refs = (flags >> 6) & 0x1;
1404 info->no_special_static_fields = (flags >> 7) & 0x1;
1405 info->is_generic_container = (flags >> 8) & 0x1;
1406
1407 if (info->has_cctor) {
1408 res = decode_method_ref (module, &ref, buf, &buf);
1409 if (!res)
1410 return FALSE;
1411 info->cctor_token = ref.token;
1412 }
1413 if (info->has_finalize) {
1414 res = decode_method_ref (module, &ref, buf, &buf);
1415 if (!res)
1416 return FALSE;
1417 info->finalize_image = ref.image;
1418 info->finalize_token = ref.token;
1419 }
1420
1421 info->instance_size = decode_value (buf, &buf);
1422 info->class_size = decode_value (buf, &buf);
1423 info->packing_size = decode_value (buf, &buf);
1424 info->min_align = decode_value (buf, &buf);
1425
1426 *endbuf = buf;
1427
1428 return TRUE;
1429 }
1430
1431 gpointer
1432 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
1433 {
1434 int i;
1435 MonoClass *klass = vtable->klass;
1436 MonoAotModule *amodule = klass->image->aot_module;
1437 guint8 *info, *p;
1438 MonoCachedClassInfo class_info;
1439 gboolean err;
1440 MethodRef ref;
1441 gboolean res;
1442
1443 if (MONO_CLASS_IS_INTERFACE (klass) || klass->rank || !amodule)
1444 return NULL;
1445
1446 info = &amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
1447 p = info;
1448
1449 err = decode_cached_class_info (amodule, &class_info, p, &p);
1450 if (!err)
1451 return NULL;
1452
1453 for (i = 0; i < slot; ++i)
1454 decode_method_ref (amodule, &ref, p, &p);
1455
1456 res = decode_method_ref (amodule, &ref, p, &p);
1457 if (!res)
1458 return NULL;
1459 if (ref.no_aot_trampoline)
1460 return NULL;
1461
1462 if (mono_metadata_token_index (ref.token) == 0)
1463 return NULL;
1464
1465 return mono_aot_get_method_from_token (domain, ref.image, ref.token);
1466 }
1467
1468 gboolean
1469 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
1470 {
1471 MonoAotModule *amodule = klass->image->aot_module;
1472 guint8 *p;
1473 gboolean err;
1474
1475 if (klass->rank || !amodule)
1476 return FALSE;
1477
1478 p = (guint8*)&amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
1479
1480 err = decode_cached_class_info (amodule, res, p, &p);
1481 if (!err)
1482 return FALSE;
1483
1484 return TRUE;
1485 }
1486
1487 /**
1488 * mono_aot_get_class_from_name:
1489 *
1490 * Obtains a MonoClass with a given namespace and a given name which is located in IMAGE,
1491 * using a cache stored in the AOT file.
1492 * Stores the resulting class in *KLASS if found, stores NULL otherwise.
1493 *
1494 * Returns: TRUE if the klass was found/not found in the cache, FALSE if no aot file was
1495 * found.
1496 */
1497 gboolean
1498 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
1499 {
1500 MonoAotModule *amodule = image->aot_module;
1501 guint16 *table, *entry;
1502 guint16 table_size;
1503 guint32 hash;
1504 char full_name_buf [1024];
1505 char *full_name;
1506 const char *name2, *name_space2;
1507 MonoTableInfo *t;
1508 guint32 cols [MONO_TYPEDEF_SIZE];
1509 GHashTable *nspace_table;
1510
1511 if (!amodule || !amodule->class_name_table)
1512 return FALSE;
1513
1514 mono_aot_lock ();
1515
1516 *klass = NULL;
1517
1518 /* First look in the cache */
1519 if (!amodule->name_cache)
1520 amodule->name_cache = g_hash_table_new (g_str_hash, g_str_equal);
1521 nspace_table = g_hash_table_lookup (amodule->name_cache, name_space);
1522 if (nspace_table) {
1523 *klass = g_hash_table_lookup (nspace_table, name);
1524 if (*klass) {
1525 mono_aot_unlock ();
1526 return TRUE;
1527 }
1528 }
1529
1530 table_size = amodule->class_name_table [0];
1531 table = amodule->class_name_table + 1;
1532
1533 if (name_space [0] == '\0')
1534 full_name = g_strdup_printf ("%s", name);
1535 else {
1536 if (strlen (name_space) + strlen (name) < 1000) {
1537 sprintf (full_name_buf, "%s.%s", name_space, name);
1538 full_name = full_name_buf;
1539 } else {
1540 full_name = g_strdup_printf ("%s.%s", name_space, name);
1541 }
1542 }
1543 hash = mono_metadata_str_hash (full_name) % table_size;
1544 if (full_name != full_name_buf)
1545 g_free (full_name);
1546
1547 entry = &table [hash * 2];
1548
1549 if (entry [0] != 0) {
1550 t = &image->tables [MONO_TABLE_TYPEDEF];
1551
1552 while (TRUE) {
1553 guint32 index = entry [0];
1554 guint32 next = entry [1];
1555 guint32 token = mono_metadata_make_token (MONO_TABLE_TYPEDEF, index);
1556
1557 name_table_accesses ++;
1558
1559 mono_metadata_decode_row (t, index - 1, cols, MONO_TYPEDEF_SIZE);
1560
1561 name2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
1562 name_space2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
1563
1564 if (!strcmp (name, name2) && !strcmp (name_space, name_space2)) {
1565 mono_aot_unlock ();
1566 *klass = mono_class_get (image, token);
1567
1568 /* Add to cache */
1569 if (*klass) {
1570 mono_aot_lock ();
1571 nspace_table = g_hash_table_lookup (amodule->name_cache, name_space);
1572 if (!nspace_table) {
1573 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
1574 g_hash_table_insert (amodule->name_cache, (char*)name_space2, nspace_table);
1575 }
1576 g_hash_table_insert (nspace_table, (char*)name2, *klass);
1577 mono_aot_unlock ();
1578 }
1579 return TRUE;
1580 }
1581
1582 if (next != 0) {
1583 entry = &table [next * 2];
1584 } else {
1585 break;
1586 }
1587 }
1588 }
1589
1590 mono_aot_unlock ();
1591
1592 return TRUE;
1593 }
1594
1595 /*
1596 * decode_mono_eh_frame:
1597 *
1598 * Decode the EH information emitted by our modified LLVM compiler and construct a
1599 * MonoJitInfo structure from it.
1600 * LOCKING: Acquires the domain lock.
1601 */
1602 static MonoJitInfo*
1603 decode_llvm_mono_eh_frame (MonoAotModule *amodule, MonoDomain *domain,
1604 MonoMethod *method, guint8 *code,
1605 MonoJitExceptionInfo *clauses, int num_clauses,
1606 int extra_size, GSList **nesting,
1607 int *this_reg, int *this_offset)
1608 {
1609 guint8 *p;
1610 guint8 *fde, *cie, *code_start, *code_end;
1611 int version, fde_count;
1612 gint32 *table;
1613 int i, j, pos, left, right, offset, offset1, offset2, code_len;
1614 MonoJitExceptionInfo *ei;
1615 guint32 fde_len, ei_len, nested_len, nindex;
1616 gpointer *type_info;
1617 MonoJitInfo *jinfo;
1618 MonoLLVMFDEInfo info;
1619
1620 g_assert (amodule->mono_eh_frame);
1621
1622 p = amodule->mono_eh_frame;
1623
1624 /* p points to data emitted by LLVM in DwarfException::EmitMonoEHFrame () */
1625
1626 /* Header */
1627 version = *p;
1628 g_assert (version == 1);
1629 p ++;
1630 p = ALIGN_PTR_TO (p, 4);
1631
1632 fde_count = *(guint32*)p;
1633 p += 4;
1634 table = (gint32*)p;
1635
1636 /* There is +1 entry in the table */
1637 cie = p + ((fde_count + 1) * 8);
1638
1639 /* Binary search in the table to find the entry for code */
1640 offset = code - amodule->mono_eh_frame;
1641
1642 left = 0;
1643 right = fde_count;
1644 while (TRUE) {
1645 pos = (left + right) / 2;
1646
1647 offset1 = table [(pos * 2)];
1648 if (pos + 1 == fde_count)
1649 /* FIXME: */
1650 offset2 = amodule->code_end - amodule->code;
1651 else
1652 offset2 = table [(pos + 1) * 2];
1653
1654 if (offset < offset1)
1655 right = pos;
1656 else if (offset >= offset2)
1657 left = pos + 1;
1658 else
1659 break;
1660 }
1661
1662 code_start = amodule->mono_eh_frame + table [(pos * 2)];
1663 /* This won't overflow because there is +1 entry in the table */
1664 code_end = amodule->mono_eh_frame + table [(pos * 2) + 2];
1665 code_len = code_end - code_start;
1666
1667 g_assert (code >= code_start && code < code_end);
1668
1669 fde = amodule->mono_eh_frame + table [(pos * 2) + 1];
1670 /* This won't overflow because there is +1 entry in the table */
1671 fde_len = table [(pos * 2) + 2 + 1] - table [(pos * 2) + 1];
1672
1673 mono_unwind_decode_llvm_mono_fde (fde, fde_len, cie, code_start, &info);
1674 ei = info.ex_info;
1675 ei_len = info.ex_info_len;
1676 type_info = info.type_info;
1677 *this_reg = info.this_reg;
1678 *this_offset = info.this_offset;
1679
1680 /* Count number of nested clauses */
1681 nested_len = 0;
1682 for (i = 0; i < ei_len; ++i) {
1683 /* This might be unaligned */
1684 gint32 cindex1 = read32 (type_info [i]);
1685 GSList *l;
1686
1687 for (l = nesting [cindex1]; l; l = l->next) {
1688 gint32 nesting_cindex = GPOINTER_TO_INT (l->data);
1689
1690 for (j = 0; j < ei_len; ++j) {
1691 gint32 cindex2 = read32 (type_info [j]);
1692
1693 if (cindex2 == nesting_cindex)
1694 nested_len ++;
1695 }
1696 }
1697 }
1698
1699 /*
1700 * LLVM might represent one IL region with multiple regions, so have to
1701 * allocate a new JI.
1702 */
1703 jinfo =
1704 mono_domain_alloc0 (domain, MONO_SIZEOF_JIT_INFO + (sizeof (MonoJitExceptionInfo) * (ei_len + nested_len)) + extra_size);
1705
1706 jinfo->code_size = code_len;
1707 jinfo->used_regs = mono_cache_unwind_info (info.unw_info, info.unw_info_len);
1708 jinfo->method = method;
1709 jinfo->code_start = code;
1710 jinfo->domain_neutral = 0;
1711 /* This signals that used_regs points to a normal cached unwind info */
1712 jinfo->from_aot = 0;
1713 jinfo->num_clauses = ei_len + nested_len;
1714
1715 for (i = 0; i < ei_len; ++i) {
1716 /*
1717 * orig_jinfo contains the original IL exception info saved by the AOT
1718 * compiler, we have to combine that with the information produced by LLVM
1719 */
1720 /* The type_info entries contain IL clause indexes */
1721 int clause_index = read32 (type_info [i]);
1722 MonoJitExceptionInfo *jei = &jinfo->clauses [i];
1723 MonoJitExceptionInfo *orig_jei = &clauses [clause_index];
1724
1725 g_assert (clause_index < num_clauses);
1726 jei->flags = orig_jei->flags;
1727 jei->data.catch_class = orig_jei->data.catch_class;
1728
1729 jei->try_start = ei [i].try_start;
1730 jei->try_end = ei [i].try_end;
1731 jei->handler_start = ei [i].handler_start;
1732
1733 /* Make sure we transition to thumb when a handler starts */
1734 if (amodule->thumb_end && (guint8*)jei->handler_start < amodule->thumb_end)
1735 jei->handler_start = (void*)((mgreg_t)jei->handler_start + 1);
1736 }
1737
1738 /* See exception_cb () in mini-llvm.c as to why this is needed */
1739 nindex = ei_len;
1740 for (i = 0; i < ei_len; ++i) {
1741 gint32 cindex1 = read32 (type_info [i]);
1742 GSList *l;
1743
1744 for (l = nesting [cindex1]; l; l = l->next) {
1745 gint32 nesting_cindex = GPOINTER_TO_INT (l->data);
1746
1747 for (j = 0; j < ei_len; ++j) {
1748 gint32 cindex2 = read32 (type_info [j]);
1749
1750 if (cindex2 == nesting_cindex) {
1751 /*
1752 * The try interval comes from the nested clause, everything else from the
1753 * nesting clause.
1754 */
1755 memcpy (&jinfo->clauses [nindex], &jinfo->clauses [j], sizeof (MonoJitExceptionInfo));
1756 jinfo->clauses [nindex].try_start = jinfo->clauses [i].try_start;
1757 jinfo->clauses [nindex].try_end = jinfo->clauses [i].try_end;
1758 nindex ++;
1759 }
1760 }
1761 }
1762 }
1763 g_assert (nindex == ei_len + nested_len);
1764
1765 return jinfo;
1766 }
1767
1768 /*
1769 * LOCKING: Acquires the domain lock.
1770 */
1771 static MonoJitInfo*
1772 decode_exception_debug_info (MonoAotModule *amodule, MonoDomain *domain,
1773 MonoMethod *method, guint8* ex_info, guint8 *addr,
1774 guint8 *code, guint32 code_len)
1775 {
1776 int i, buf_len, num_clauses;
1777 MonoJitInfo *jinfo;
1778 guint used_int_regs, flags;
1779 gboolean has_generic_jit_info, has_dwarf_unwind_info, has_clauses, has_seq_points, has_try_block_holes;
1780 gboolean from_llvm, has_gc_map;
1781 guint8 *p;
1782 int generic_info_size, try_holes_info_size, num_holes, this_reg = 0, this_offset = 0;
1783
1784 /* Load the method info from the AOT file */
1785
1786 p = ex_info;
1787 flags = decode_value (p, &p);
1788 has_generic_jit_info = (flags & 1) != 0;
1789 has_dwarf_unwind_info = (flags & 2) != 0;
1790 has_clauses = (flags & 4) != 0;
1791 has_seq_points = (flags & 8) != 0;
1792 from_llvm = (flags & 16) != 0;
1793 has_try_block_holes = (flags & 32) != 0;
1794 has_gc_map = (flags & 64) != 0;
1795
1796 if (has_dwarf_unwind_info) {
1797 guint32 offset;
1798
1799 offset = decode_value (p, &p);
1800 g_assert (offset < (1 << 30));
1801 used_int_regs = offset;
1802 } else {
1803 used_int_regs = decode_value (p, &p);
1804 }
1805 if (has_generic_jit_info)
1806 generic_info_size = sizeof (MonoGenericJitInfo);
1807 else
1808 generic_info_size = 0;
1809
1810 if (has_try_block_holes) {
1811 num_holes = decode_value (p, &p);
1812 try_holes_info_size = sizeof (MonoTryBlockHoleTableJitInfo) + num_holes * sizeof (MonoTryBlockHoleJitInfo);
1813 } else {
1814 num_holes = try_holes_info_size = 0;
1815 }
1816 /* Exception table */
1817 if (has_clauses)
1818 num_clauses = decode_value (p, &p);
1819 else
1820 num_clauses = 0;
1821
1822 if (from_llvm) {
1823 MonoJitExceptionInfo *clauses;
1824 GSList **nesting;
1825
1826 /*
1827 * Part of the info is encoded by the AOT compiler, the rest is in the .eh_frame
1828 * section.
1829 */
1830 clauses = g_new0 (MonoJitExceptionInfo, num_clauses);
1831 nesting = g_new0 (GSList*, num_clauses);
1832
1833 for (i = 0; i < num_clauses; ++i) {
1834 MonoJitExceptionInfo *ei = &clauses [i];
1835
1836 ei->flags = decode_value (p, &p);
1837
1838 if (decode_value (p, &p))
1839 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
1840
1841 /* Read the list of nesting clauses */
1842 while (TRUE) {
1843 int nesting_index = decode_value (p, &p);
1844 if (nesting_index == -1)
1845 break;
1846 nesting [i] = g_slist_prepend (nesting [i], GINT_TO_POINTER (nesting_index));
1847 }
1848 }
1849
1850 jinfo = decode_llvm_mono_eh_frame (amodule, domain, method, code, clauses, num_clauses, generic_info_size + try_holes_info_size, nesting, &this_reg, &this_offset);
1851 jinfo->from_llvm = 1;
1852
1853 g_free (clauses);
1854 for (i = 0; i < num_clauses; ++i)
1855 g_slist_free (nesting [i]);
1856 g_free (nesting);
1857 } else {
1858 jinfo =
1859 mono_domain_alloc0 (domain, MONO_SIZEOF_JIT_INFO + (sizeof (MonoJitExceptionInfo) * num_clauses) + generic_info_size + try_holes_info_size);
1860 jinfo->num_clauses = num_clauses;
1861
1862 for (i = 0; i < jinfo->num_clauses; ++i) {
1863 MonoJitExceptionInfo *ei = &jinfo->clauses [i];
1864
1865 ei->flags = decode_value (p, &p);
1866
1867 ei->exvar_offset = decode_value (p, &p);
1868
1869 if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER || ei->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
1870 ei->data.filter = code + decode_value (p, &p);
1871 else {
1872 if (decode_value (p, &p))
1873 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
1874 }
1875
1876 ei->try_start = code + decode_value (p, &p);
1877 ei->try_end = code + decode_value (p, &p);
1878 ei->handler_start = code + decode_value (p, &p);
1879 }
1880
1881 jinfo->code_size = code_len;
1882 jinfo->used_regs = used_int_regs;
1883 jinfo->method = method;
1884 jinfo->code_start = code;
1885 jinfo->domain_neutral = 0;
1886 jinfo->from_aot = 1;
1887 }
1888
1889 if (has_generic_jit_info) {
1890 MonoGenericJitInfo *gi;
1891
1892 jinfo->has_generic_jit_info = 1;
1893
1894 gi = mono_jit_info_get_generic_jit_info (jinfo);
1895 g_assert (gi);
1896
1897 if (from_llvm) {
1898 gi->has_this = this_reg != -1;
1899 gi->this_reg = this_reg;
1900 gi->this_offset = this_offset;
1901 } else {
1902 gi->has_this = decode_value (p, &p);
1903 gi->this_reg = decode_value (p, &p);
1904 gi->this_offset = decode_value (p, &p);
1905 }
1906
1907 /* This currently contains no data */
1908 gi->generic_sharing_context = g_new0 (MonoGenericSharingContext, 1);
1909
1910 jinfo->method = decode_resolve_method_ref (amodule, p, &p);
1911 }
1912
1913 if (has_try_block_holes) {
1914 MonoTryBlockHoleTableJitInfo *table;
1915
1916 jinfo->has_try_block_holes = 1;
1917
1918 table = mono_jit_info_get_try_block_hole_table_info (jinfo);
1919 g_assert (table);
1920
1921 table->num_holes = (guint16)num_holes;
1922 for (i = 0; i < num_holes; ++i) {
1923 MonoTryBlockHoleJitInfo *hole = &table->holes [i];
1924 hole->clause = decode_value (p, &p);
1925 hole->length = decode_value (p, &p);
1926 hole->offset = decode_value (p, &p);
1927 }
1928 }
1929
1930 if (has_seq_points) {
1931 MonoSeqPointInfo *seq_points;
1932 int il_offset, native_offset, last_il_offset, last_native_offset, j;
1933
1934 int len = decode_value (p, &p);
1935
1936 seq_points = g_malloc0 (sizeof (MonoSeqPointInfo) + (len - MONO_ZERO_LEN_ARRAY) * sizeof (SeqPoint));
1937 seq_points->len = len;
1938 last_il_offset = last_native_offset = 0;
1939 for (i = 0; i < len; ++i) {
1940 SeqPoint *sp = &seq_points->seq_points [i];
1941 il_offset = last_il_offset + decode_value (p, &p);
1942 native_offset = last_native_offset + decode_value (p, &p);
1943
1944 sp->il_offset = il_offset;
1945 sp->native_offset = native_offset;
1946
1947 sp->next_len = decode_value (p, &p);
1948 sp->next = g_new (int, sp->next_len);
1949 for (j = 0; j < sp->next_len; ++j)
1950 sp->next [j] = decode_value (p, &p);
1951
1952 last_il_offset = il_offset;
1953 last_native_offset = native_offset;
1954 }
1955
1956 mono_domain_lock (domain);
1957 g_hash_table_insert (domain_jit_info (domain)->seq_points, method, seq_points);
1958 mono_domain_unlock (domain);
1959 }
1960
1961 /* Load debug info */
1962 buf_len = decode_value (p, &p);
1963 mono_debug_add_aot_method (domain, method, code, p, buf_len);
1964 p += buf_len;
1965
1966 if (has_gc_map) {
1967 int map_size = decode_value (p, &p);
1968 /* The GC map requires 4 bytes of alignment */
1969 while ((guint64)(gsize)p % 4)
1970 p ++;
1971 jinfo->gc_info = p;
1972 p += map_size;
1973 }
1974
1975 if (amodule != jinfo->method->klass->image->aot_module) {
1976 mono_aot_lock ();
1977 if (!ji_to_amodule)
1978 ji_to_amodule = g_hash_table_new (NULL, NULL);
1979 g_hash_table_insert (ji_to_amodule, jinfo, amodule);
1980 mono_aot_unlock ();
1981 }
1982
1983 return jinfo;
1984 }
1985
1986 /*
1987 * mono_aot_get_unwind_info:
1988 *
1989 * Return a pointer to the DWARF unwind info belonging to JI.
1990 */
1991 guint8*
1992 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
1993 {
1994 MonoAotModule *amodule = ji->method->klass->image->aot_module;
1995 guint8 *p;
1996 guint8 *code = ji->code_start;
1997
1998 g_assert (amodule);
1999 g_assert (ji->from_aot);
2000
2001 if (!(code >= amodule->code && code <= amodule->code_end)) {
2002 /* ji belongs to a different aot module than amodule */
2003 mono_aot_lock ();
2004 g_assert (ji_to_amodule);
2005 amodule = g_hash_table_lookup (ji_to_amodule, ji);
2006 g_assert (amodule);
2007 g_assert (code >= amodule->code && code <= amodule->code_end);
2008 mono_aot_unlock ();
2009 }
2010
2011 p = amodule->unwind_info + ji->used_regs;
2012 *unwind_info_len = decode_value (p, &p);
2013 return p;
2014 }
2015
2016 static G_GNUC_UNUSED int
2017 compare_ints (const void *a, const void *b)
2018 {
2019 return *(gint32*)a - *(gint32*)b;
2020 }
2021
2022 static void
2023 msort_code_offsets_internal (gint32 *array, int lo, int hi, gint32 *scratch)
2024 {
2025 int mid = (lo + hi) / 2;
2026 int i, t_lo, t_hi;
2027
2028 if (lo >= hi)
2029 return;
2030
2031 if (hi - lo < 32) {
2032 for (i = lo; i < hi; ++i)
2033 if (array [(i * 2)] > array [(i * 2) + 2])
2034 break;
2035 if (i == hi)
2036 /* Already sorted */
2037 return;
2038 }
2039
2040 msort_code_offsets_internal (array, lo, mid, scratch);
2041 msort_code_offsets_internal (array, mid + 1, hi, scratch);
2042
2043 if (array [mid * 2] < array [(mid + 1) * 2])
2044 return;
2045
2046 /* Merge */
2047 t_lo = lo;
2048 t_hi = mid + 1;
2049 for (i = lo; i <= hi; i ++) {
2050 if (t_lo <= mid && ((t_hi > hi) || array [t_lo * 2] < array [t_hi * 2])) {
2051 scratch [(i * 2)] = array [t_lo * 2];
2052 scratch [(i * 2) + 1] = array [(t_lo *2) + 1];
2053 t_lo ++;
2054 } else {
2055 scratch [(i * 2)] = array [t_hi * 2];
2056 scratch [(i * 2) + 1] = array [(t_hi *2) + 1];
2057 t_hi ++;
2058 }
2059 }
2060 for (i = lo; i <= hi; ++i) {
2061 array [(i * 2)] = scratch [i * 2];
2062 array [(i * 2) + 1] = scratch [(i * 2) + 1];
2063 }
2064 }
2065
2066 static void
2067 msort_code_offsets (gint32 *array, int len)
2068 {
2069 gint32 *scratch;
2070
2071 scratch = g_new (gint32, len * 2);
2072 msort_code_offsets_internal (array, 0, len - 1, scratch);
2073 g_free (scratch);
2074 }
2075
2076 MonoJitInfo *
2077 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
2078 {
2079 int pos, left, right, offset, offset1, offset2, code_len;
2080 int method_index, table_len, is_wrapper;
2081 guint32 token;
2082 MonoAotModule *amodule = image->aot_module;
2083 MonoMethod *method;
2084 MonoJitInfo *jinfo;
2085 guint8 *code, *ex_info, *p;
2086 guint32 *table;
2087 int nmethods = amodule->info.nmethods;
2088 gint32 *code_offsets;
2089 int offsets_len, i;
2090
2091 if (!amodule)
2092 return NULL;
2093
2094 if (domain != mono_get_root_domain ())
2095 /* FIXME: */
2096 return NULL;
2097
2098 offset = (guint8*)addr - amodule->code;
2099
2100 /* Compute a sorted table mapping code offsets to method indexes. */
2101 if (!amodule->sorted_code_offsets) {
2102 code_offsets = g_new0 (gint32, nmethods * 2);
2103 offsets_len = 0;
2104 for (i = 0; i < nmethods; ++i) {
2105 /* Skip the -1 entries to speed up sorting */
2106 if (amodule->code_offsets [i] == 0xffffffff)
2107 continue;
2108 code_offsets [(offsets_len * 2)] = amodule->code_offsets [i];
2109 code_offsets [(offsets_len *2) + 1] = i;
2110 offsets_len ++;
2111 }
2112 /* Use a merge sort as this is mostly sorted */
2113 msort_code_offsets (code_offsets, offsets_len);
2114 //qsort (code_offsets, offsets_len, sizeof (gint32) * 2, compare_ints);
2115 for (i = 0; i < offsets_len -1; ++i)
2116 g_assert (code_offsets [(i * 2)] <= code_offsets [(i + 1) * 2]);
2117
2118 if (InterlockedCompareExchangePointer ((gpointer*)&amodule->sorted_code_offsets, code_offsets, NULL) != NULL)
2119 /* Somebody got in before us */
2120 g_free (code_offsets);
2121 amodule->sorted_code_offsets_len = offsets_len;
2122 }
2123
2124 code_offsets = amodule->sorted_code_offsets;
2125 offsets_len = amodule->sorted_code_offsets_len;
2126
2127 /* Binary search in the sorted_code_offsets table */
2128 left = 0;
2129 right = offsets_len;
2130 while (TRUE) {
2131 pos = (left + right) / 2;
2132
2133 offset1 = code_offsets [(pos * 2)];
2134 if (pos + 1 == offsets_len)
2135 offset2 = amodule->code_end - amodule->code;
2136 else
2137 offset2 = code_offsets [(pos + 1) * 2];
2138
2139 if (offset < offset1)
2140 right = pos;
2141 else if (offset >= offset2)
2142 left = pos + 1;
2143 else
2144 break;
2145 }
2146
2147 g_assert (offset >= code_offsets [(pos * 2)]);
2148 if (pos + 1 < offsets_len)
2149 g_assert (offset < code_offsets [((pos + 1) * 2)]);
2150 method_index = code_offsets [(pos * 2) + 1];
2151
2152 code = &amodule->code [amodule->code_offsets [method_index]];
2153 ex_info = &amodule->blob [mono_aot_get_offset (amodule->ex_info_offsets, method_index)];
2154
2155 if (pos == offsets_len - 1)
2156 code_len = amodule->code_end - code;
2157 else
2158 code_len = code_offsets [(pos + 1) * 2] - code_offsets [pos * 2];
2159
2160 g_assert ((guint8*)code <= (guint8*)addr && (guint8*)addr < (guint8*)code + code_len);
2161
2162 /* Might be a wrapper/extra method */
2163 if (amodule->extra_methods) {
2164 mono_aot_lock ();
2165 method = g_hash_table_lookup (amodule->extra_methods, GUINT_TO_POINTER (method_index));
2166 mono_aot_unlock ();
2167 } else {
2168 method = NULL;
2169 }
2170
2171 if (!method) {
2172 if (method_index >= image->tables [MONO_TABLE_METHOD].rows) {
2173 /*
2174 * This is hit for extra methods which are called directly, so they are
2175 * not in amodule->extra_methods.
2176 */
2177 table_len = amodule->extra_method_info_offsets [0];
2178 table = amodule->extra_method_info_offsets + 1;
2179 left = 0;
2180 right = table_len;
2181 pos = 0;
2182
2183 /* Binary search */
2184 while (TRUE) {
2185 pos = ((left + right) / 2);
2186
2187 g_assert (pos < table_len);
2188
2189 if (table [pos * 2] < method_index)
2190 left = pos + 1;
2191 else if (table [pos * 2] > method_index)
2192 right = pos;
2193 else
2194 break;
2195 }
2196
2197 p = amodule->blob + table [(pos * 2) + 1];
2198 is_wrapper = decode_value (p, &p);
2199 g_assert (!is_wrapper);
2200 method = decode_resolve_method_ref (amodule, p, &p);
2201 g_assert (method);
2202 } else {
2203 token = mono_metadata_make_token (MONO_TABLE_METHOD, method_index + 1);
2204 method = mono_get_method (image, token, NULL);
2205 }
2206 }
2207
2208 /* FIXME: */
2209 g_assert (method);
2210
2211 //printf ("F: %s\n", mono_method_full_name (method, TRUE));
2212
2213 jinfo = decode_exception_debug_info (amodule, domain, method, ex_info, addr, code, code_len);
2214
2215 g_assert ((guint8*)addr >= (guint8*)jinfo->code_start);
2216 g_assert ((guint8*)addr < (guint8*)jinfo->code_start + jinfo->code_size);
2217
2218 /* Add it to the normal JitInfo tables */
2219 mono_jit_info_table_add (domain, jinfo);
2220
2221 return jinfo;
2222 }
2223
2224 static gboolean
2225 decode_patch (MonoAotModule *aot_module, MonoMemPool *mp, MonoJumpInfo *ji, guint8 *buf, guint8 **endbuf)
2226 {
2227 guint8 *p = buf;
2228 gpointer *table;
2229 MonoImage *image;
2230 int i;
2231
2232 switch (ji->type) {
2233 case MONO_PATCH_INFO_METHOD:
2234 case MONO_PATCH_INFO_METHOD_JUMP:
2235 case MONO_PATCH_INFO_ICALL_ADDR:
2236 case MONO_PATCH_INFO_METHOD_RGCTX: {
2237 MethodRef ref;
2238 gboolean res;
2239
2240 res = decode_method_ref (aot_module, &ref, p, &p);
2241 if (!res)
2242 goto cleanup;
2243
2244 if (!ref.method && !mono_aot_only && !ref.no_aot_trampoline && (ji->type == MONO_PATCH_INFO_METHOD) && (mono_metadata_token_table (ref.token) == MONO_TABLE_METHOD)) {
2245 ji->data.target = mono_create_ftnptr (mono_domain_get (), mono_create_jit_trampoline_from_token (ref.image, ref.token));
2246 ji->type = MONO_PATCH_INFO_ABS;
2247 }
2248 else {
2249 if (ref.method)
2250 ji->data.method = ref.method;
2251 else
2252 ji->data.method = mono_get_method (ref.image, ref.token, NULL);
2253 g_assert (ji->data.method);
2254 mono_class_init (ji->data.method->klass);
2255 }
2256 break;
2257 }
2258 case MONO_PATCH_INFO_INTERNAL_METHOD:
2259 case MONO_PATCH_INFO_JIT_ICALL_ADDR: {
2260 guint32 len = decode_value (p, &p);
2261
2262 ji->data.name = (char*)p;
2263 p += len + 1;
2264 break;
2265 }
2266 case MONO_PATCH_INFO_METHODCONST:
2267 /* Shared */
2268 ji->data.method = decode_resolve_method_ref (aot_module, p, &p);
2269 if (!ji->data.method)
2270 goto cleanup;
2271 break;
2272 case MONO_PATCH_INFO_VTABLE:
2273 case MONO_PATCH_INFO_CLASS:
2274 case MONO_PATCH_INFO_IID:
2275 case MONO_PATCH_INFO_ADJUSTED_IID:
2276 /* Shared */
2277 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2278 if (!ji->data.klass)
2279 goto cleanup;
2280 break;
2281 case MONO_PATCH_INFO_CLASS_INIT:
2282 case MONO_PATCH_INFO_DELEGATE_TRAMPOLINE:
2283 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2284 if (!ji->data.klass)
2285 goto cleanup;
2286 break;
2287 case MONO_PATCH_INFO_IMAGE:
2288 ji->data.image = load_image (aot_module, decode_value (p, &p), TRUE);
2289 if (!ji->data.image)
2290 goto cleanup;
2291 break;
2292 case MONO_PATCH_INFO_FIELD:
2293 case MONO_PATCH_INFO_SFLDA:
2294 /* Shared */
2295 ji->data.field = decode_field_info (aot_module, p, &p);
2296 if (!ji->data.field)
2297 goto cleanup;
2298 break;
2299 case MONO_PATCH_INFO_SWITCH:
2300 ji->data.table = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoBBTable));
2301 ji->data.table->table_size = decode_value (p, &p);
2302 table = mono_domain_alloc (mono_domain_get (), sizeof (gpointer) * ji->data.table->table_size);
2303 ji->data.table->table = (MonoBasicBlock**)table;
2304 for (i = 0; i < ji->data.table->table_size; i++)
2305 table [i] = (gpointer)(gssize)decode_value (p, &p);
2306 break;
2307 case MONO_PATCH_INFO_R4: {
2308 guint32 val;
2309
2310 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (float));
2311 val = decode_value (p, &p);
2312 *(float*)ji->data.target = *(float*)&val;
2313 break;
2314 }
2315 case MONO_PATCH_INFO_R8: {
2316 guint32 val [2];
2317 guint64 v;
2318
2319 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (double));
2320
2321 val [0] = decode_value (p, &p);
2322 val [1] = decode_value (p, &p);
2323 v = ((guint64)val [1] << 32) | ((guint64)val [0]);
2324 *(double*)ji->data.target = *(double*)&v;
2325 break;
2326 }
2327 case MONO_PATCH_INFO_LDSTR:
2328 image = load_image (aot_module, decode_value (p, &p), TRUE);
2329 if (!image)
2330 goto cleanup;
2331 ji->data.token = mono_jump_info_token_new (mp, image, MONO_TOKEN_STRING + decode_value (p, &p));
2332 break;
2333 case MONO_PATCH_INFO_RVA:
2334 case MONO_PATCH_INFO_DECLSEC:
2335 case MONO_PATCH_INFO_LDTOKEN:
2336 case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
2337 /* Shared */
2338 image = load_image (aot_module, decode_value (p, &p), TRUE);
2339 if (!image)
2340 goto cleanup;
2341 ji->data.token = mono_jump_info_token_new (mp, image, decode_value (p, &p));
2342
2343 ji->data.token->has_context = decode_value (p, &p);
2344 if (ji->data.token->has_context) {
2345 gboolean res = decode_generic_context (aot_module, &ji->data.token->context, p, &p);
2346 if (!res)
2347 goto cleanup;
2348 }
2349 break;
2350 case MONO_PATCH_INFO_EXC_NAME:
2351 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2352 if (!ji->data.klass)
2353 goto cleanup;
2354 ji->data.name = ji->data.klass->name;
2355 break;
2356 case MONO_PATCH_INFO_METHOD_REL:
2357 ji->data.offset = decode_value (p, &p);
2358 break;
2359 case MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG:
2360 case MONO_PATCH_INFO_GENERIC_CLASS_INIT:
2361 case MONO_PATCH_INFO_MONITOR_ENTER:
2362 case MONO_PATCH_INFO_MONITOR_EXIT:
2363 case MONO_PATCH_INFO_GC_CARD_TABLE_ADDR:
2364 case MONO_PATCH_INFO_CASTCLASS_CACHE:
2365 break;
2366 case MONO_PATCH_INFO_RGCTX_FETCH: {
2367 gboolean res;
2368 MonoJumpInfoRgctxEntry *entry;
2369
2370 entry = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
2371 entry->method = decode_resolve_method_ref (aot_module, p, &p);
2372 entry->in_mrgctx = decode_value (p, &p);
2373 entry->info_type = decode_value (p, &p);
2374 entry->data = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
2375 entry->data->type = decode_value (p, &p);
2376
2377 res = decode_patch (aot_module, mp, entry->data, p, &p);
2378 if (!res)
2379 goto cleanup;
2380 ji->data.rgctx_entry = entry;
2381 break;
2382 }
2383 case MONO_PATCH_INFO_SEQ_POINT_INFO:
2384 break;
2385 case MONO_PATCH_INFO_LLVM_IMT_TRAMPOLINE: {
2386 MonoJumpInfoImtTramp *imt_tramp = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoImtTramp));
2387
2388 imt_tramp->method = decode_resolve_method_ref (aot_module, p, &p);
2389 imt_tramp->vt_offset = decode_value (p, &p);
2390
2391 ji->data.imt_tramp = imt_tramp;
2392 break;
2393 }
2394 default:
2395 g_warning ("unhandled type %d", ji->type);
2396 g_assert_not_reached ();
2397 }
2398
2399 *endbuf = p;
2400
2401 return TRUE;
2402
2403 cleanup:
2404 return FALSE;
2405 }
2406
2407 static MonoJumpInfo*
2408 load_patch_info (MonoAotModule *aot_module, MonoMemPool *mp, int n_patches,
2409 guint32 **got_slots,
2410 guint8 *buf, guint8 **endbuf)
2411 {
2412 MonoJumpInfo *patches;
2413 int pindex;
2414 guint8 *p;
2415
2416 p = buf;
2417
2418 patches = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo) * n_patches);
2419
2420 *got_slots = g_malloc (sizeof (guint32) * n_patches);
2421
2422 for (pindex = 0; pindex < n_patches; ++pindex) {
2423 MonoJumpInfo *ji = &patches [pindex];
2424 guint8 *shared_p;
2425 gboolean res;
2426 guint32 got_offset;
2427
2428 got_offset = decode_value (p, &p);
2429
2430 if (aot_module->got [got_offset]) {
2431 /* Already loaded */
2432 //printf ("HIT!\n");
2433 } else {
2434 shared_p = aot_module->blob + mono_aot_get_offset (aot_module->got_info_offsets, got_offset);
2435
2436 ji->type = decode_value (shared_p, &shared_p);
2437
2438 res = decode_patch (aot_module, mp, ji, shared_p, &shared_p);
2439 if (!res)
2440 goto cleanup;
2441 }
2442
2443 (*got_slots) [pindex] = got_offset;
2444 }
2445
2446 *endbuf = p;
2447 return patches;
2448
2449 cleanup:
2450 g_free (*got_slots);
2451 *got_slots = NULL;
2452
2453 return NULL;
2454 }
2455
2456 static void
2457 register_jump_target_got_slot (MonoDomain *domain, MonoMethod *method, gpointer *got_slot)
2458 {
2459 /*
2460 * Jump addresses cannot be patched by the trampoline code since it
2461 * does not have access to the caller's address. Instead, we collect
2462 * the addresses of the GOT slots pointing to a method, and patch
2463 * them after the method has been compiled.
2464 */
2465 MonoJitDomainInfo *info = domain_jit_info (domain);
2466 GSList *list;
2467
2468 mono_domain_lock (domain);
2469 if (!info->jump_target_got_slot_hash)
2470 info->jump_target_got_slot_hash = g_hash_table_new (NULL, NULL);
2471 list = g_hash_table_lookup (info->jump_target_got_slot_hash, method);
2472 list = g_slist_prepend (list, got_slot);
2473 g_hash_table_insert (info->jump_target_got_slot_hash, method, list);
2474 mono_domain_unlock (domain);
2475 }
2476
2477 /*
2478 * load_method:
2479 *
2480 * Load the method identified by METHOD_INDEX from the AOT image. Return a
2481 * pointer to the native code of the method, or NULL if not found.
2482 * METHOD might not be set if the caller only has the image/token info.
2483 */
2484 static gpointer
2485 load_method (MonoDomain *domain, MonoAotModule *amodule, MonoImage *image, MonoMethod *method, guint32 token, int method_index)
2486 {
2487 MonoClass *klass;
2488 gboolean from_plt = method == NULL;
2489 MonoMemPool *mp;
2490 int i, pindex, n_patches, used_strings;
2491 gboolean keep_patches = TRUE;
2492 guint8 *p;
2493 MonoJitInfo *jinfo = NULL;
2494 guint8 *code, *info;
2495
2496 if (mono_profiler_get_events () & MONO_PROFILE_ENTER_LEAVE)
2497 return NULL;
2498
2499 if ((domain != mono_get_root_domain ()) && (!(amodule->info.opts & MONO_OPT_SHARED)))
2500 /* Non shared AOT code can't be used in other appdomains */
2501 return NULL;
2502
2503 if (amodule->out_of_date)
2504 return NULL;
2505
2506 if (amodule->code_offsets [method_index] == 0xffffffff) {
2507 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
2508 char *full_name;
2509
2510 if (!method)
2511 method = mono_get_method (image, token, NULL);
2512 full_name = mono_method_full_name (method, TRUE);
2513 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.\n", full_name);
2514 g_free (full_name);
2515 }
2516 return NULL;
2517 }
2518
2519 code = &amodule->code [amodule->code_offsets [method_index]];
2520
2521 info = &amodule->blob [mono_aot_get_offset (amodule->method_info_offsets, method_index)];
2522
2523 if (amodule->thumb_end && code < amodule->thumb_end) {
2524 /* Convert this into a thumb address */
2525 g_assert ((amodule->code_offsets [method_index] & 0x1) == 0);
2526 code = &amodule->code [amodule->code_offsets [method_index] + 1];
2527 }
2528
2529 mono_aot_lock ();
2530 if (!amodule->methods_loaded)
2531 amodule->methods_loaded = g_new0 (guint32, amodule->info.nmethods + 1);
2532 mono_aot_unlock ();
2533
2534 if ((amodule->methods_loaded [method_index / 32] >> (method_index % 32)) & 0x1)
2535 return code;
2536
2537 if (mono_last_aot_method != -1) {
2538 if (mono_jit_stats.methods_aot >= mono_last_aot_method)
2539 return NULL;
2540 else if (mono_jit_stats.methods_aot == mono_last_aot_method - 1) {
2541 if (!method)
2542 method = mono_get_method (image, token, NULL);
2543 if (method) {
2544 char *name = mono_method_full_name (method, TRUE);
2545 printf ("LAST AOT METHOD: %s.\n", name);
2546 g_free (name);
2547 } else {
2548 printf ("LAST AOT METHOD: %p %d\n", code, method_index);
2549 }
2550 }
2551 }
2552
2553 p = info;
2554
2555 if (method) {
2556 klass = method->klass;
2557 decode_klass_ref (amodule, p, &p);
2558 } else {
2559 klass = decode_klass_ref (amodule, p, &p);
2560 }
2561
2562 if (amodule->info.opts & MONO_OPT_SHARED)
2563 used_strings = decode_value (p, &p);
2564 else
2565 used_strings = 0;
2566
2567 for (i = 0; i < used_strings; i++) {
2568 guint token = decode_value (p, &p);
2569 mono_ldstr (mono_get_root_domain (), image, mono_metadata_token_index (token));
2570 }
2571
2572 if (amodule->info.opts & MONO_OPT_SHARED)
2573 keep_patches = FALSE;
2574
2575 n_patches = decode_value (p, &p);
2576
2577 keep_patches = FALSE;
2578
2579 if (n_patches) {
2580 MonoJumpInfo *patches;
2581 guint32 *got_slots;
2582
2583 if (keep_patches)
2584 mp = domain->mp;
2585 else
2586 mp = mono_mempool_new ();
2587
2588 patches = load_patch_info (amodule, mp, n_patches, &got_slots, p, &p);
2589 if (patches == NULL)
2590 goto cleanup;
2591
2592 for (pindex = 0; pindex < n_patches; ++pindex) {
2593 MonoJumpInfo *ji = &patches [pindex];
2594
2595 if (!amodule->got [got_slots [pindex]]) {
2596 amodule->got [got_slots [pindex]] = mono_resolve_patch_target (method, domain, code, ji, TRUE);
2597 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
2598 amodule->got [got_slots [pindex]] = mono_create_ftnptr (domain, amodule->got [got_slots [pindex]]);
2599 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
2600 register_jump_target_got_slot (domain, ji->data.method, &(amodule->got [got_slots [pindex]]));
2601 }
2602 ji->type = MONO_PATCH_INFO_NONE;
2603 }
2604
2605 g_free (got_slots);
2606
2607 if (!keep_patches)
2608 mono_mempool_destroy (mp);
2609 }
2610
2611 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
2612 char *full_name;
2613
2614 if (!method)
2615 method = mono_get_method (image, token, NULL);
2616
2617 full_name = mono_method_full_name (method, TRUE);
2618
2619 if (!jinfo)
2620 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
2621
2622 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT FOUND method %s [%p - %p %p]\n", full_name, code, code + jinfo->code_size, info);
2623 g_free (full_name);
2624 }
2625
2626 mono_aot_lock ();
2627
2628 InterlockedIncrement (&mono_jit_stats.methods_aot);
2629
2630 amodule->methods_loaded [method_index / 32] |= 1 << (method_index % 32);
2631
2632 init_plt (amodule);
2633
2634 if (method && method->wrapper_type)
2635 g_hash_table_insert (amodule->method_to_code, method, code);
2636
2637 mono_aot_unlock ();
2638
2639 if (mono_profiler_get_events () & MONO_PROFILE_JIT_COMPILATION) {
2640 MonoJitInfo *jinfo;
2641
2642 if (!method) {
2643 method = mono_get_method (image, token, NULL);
2644 g_assert (method);
2645 }
2646 mono_profiler_method_jit (method);
2647 jinfo = mono_jit_info_table_find (domain, (char*)code);
2648 g_assert (jinfo);
2649 mono_profiler_method_end_jit (method, jinfo, MONO_PROFILE_OK);
2650 }
2651
2652 if (from_plt && klass && !klass->generic_container)
2653 mono_runtime_class_init (mono_class_vtable (domain, klass));
2654
2655 return code;
2656
2657 cleanup:
2658 /* FIXME: The space in domain->mp is wasted */
2659 if (amodule->info.opts & MONO_OPT_SHARED)
2660 /* No need to cache patches */
2661 mono_mempool_destroy (mp);
2662
2663 if (jinfo)
2664 g_free (jinfo);
2665
2666 return NULL;
2667 }
2668
2669 static guint32
2670 find_extra_method_in_amodule (MonoAotModule *amodule, MonoMethod *method, const char *name)
2671 {
2672 guint32 table_size, entry_size, hash;
2673 guint32 *table, *entry;
2674 guint32 index;
2675 static guint32 n_extra_decodes;
2676
2677 if (!amodule)
2678 return 0xffffff;
2679
2680 table_size = amodule->extra_method_table [0];
2681 table = amodule->extra_method_table + 1;
2682 entry_size = 3;
2683
2684 hash = mono_aot_method_hash (method) % table_size;
2685
2686 entry = &table [hash * entry_size];
2687
2688 if (entry [0] == 0)
2689 return 0xffffff;
2690
2691 index = 0xffffff;
2692 while (TRUE) {
2693 guint32 key = entry [0];
2694 guint32 value = entry [1];
2695 guint32 next = entry [entry_size - 1];
2696 MonoMethod *m;
2697 guint8 *p;
2698 int is_wrapper_name;
2699
2700 p = amodule->blob + key;
2701 is_wrapper_name = decode_value (p, &p);
2702 if (is_wrapper_name) {
2703 int wrapper_type = decode_value (p, &p);
2704 if (wrapper_type == method->wrapper_type && !strcmp (name, (char*)p)) {
2705 index = value;
2706 break;
2707 }
2708 } else {
2709 guint8 *orig_p = p;
2710
2711 mono_aot_lock ();
2712 if (!amodule->method_ref_to_method)
2713 amodule->method_ref_to_method = g_hash_table_new (NULL, NULL);
2714 m = g_hash_table_lookup (amodule->method_ref_to_method, p);
2715 mono_aot_unlock ();
2716 if (!m) {
2717 m = decode_resolve_method_ref_with_target (amodule, method, p, &p);
2718 if (m) {
2719 mono_aot_lock ();
2720 g_hash_table_insert (amodule->method_ref_to_method, orig_p, m);
2721 mono_aot_unlock ();
2722 }
2723 }
2724 if (m == method) {
2725 index = value;
2726 break;
2727 }
2728
2729 /* Special case: wrappers of shared generic methods */
2730 if (m && method->wrapper_type && m->wrapper_type == m->wrapper_type &&
2731 method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
2732 MonoMethod *w1 = mono_marshal_method_from_wrapper (method);
2733 MonoMethod *w2 = mono_marshal_method_from_wrapper (m);
2734
2735 if (w1->is_inflated && ((MonoMethodInflated *)w1)->declaring == w2) {
2736 index = value;
2737 break;
2738 }
2739 }
2740
2741 /* Methods decoded needlessly */
2742 if (m) {
2743 //printf ("%d %s %s %p\n", n_extra_decodes, mono_method_full_name (method, TRUE), mono_method_full_name (m, TRUE), orig_p);
2744 n_extra_decodes ++;
2745 }
2746 }
2747
2748 if (next != 0)
2749 entry = &table [next * entry_size];
2750 else
2751 break;
2752 }
2753
2754 return index;
2755 }
2756
2757 static void
2758 add_module_cb (gpointer key, gpointer value, gpointer user_data)
2759 {
2760 g_ptr_array_add ((GPtrArray*)user_data, value);
2761 }
2762
2763 /*
2764 * find_extra_method:
2765 *
2766 * Try finding METHOD in the extra_method table in all AOT images.
2767 * Return its method index, or 0xffffff if not found. Set OUT_AMODULE to the AOT
2768 * module where the method was found.
2769 */
2770 static guint32
2771 find_extra_method (MonoMethod *method, MonoAotModule **out_amodule)
2772 {
2773 guint32 index;
2774 GPtrArray *modules;
2775 int i;
2776 char *name = NULL;
2777
2778 if (method->wrapper_type)
2779 name = mono_aot_wrapper_name (method);
2780
2781 /* Try the method's module first */
2782 *out_amodule = method->klass->image->aot_module;
2783 index = find_extra_method_in_amodule (method->klass->image->aot_module, method, name);
2784 if (index != 0xffffff) {
2785 g_free (name);
2786 return index;
2787 }
2788
2789 /*
2790 * Try all other modules.
2791 * This is needed because generic instances klass->image points to the image
2792 * containing the generic definition, but the native code is generated to the
2793 * AOT image which contains the reference.
2794 */
2795
2796 /* Make a copy to avoid doing the search inside the aot lock */
2797 modules = g_ptr_array_new ();
2798 mono_aot_lock ();
2799 g_hash_table_foreach (aot_modules, add_module_cb, modules);
2800 mono_aot_unlock ();
2801
2802 index = 0xffffff;
2803 for (i = 0; i < modules->len; ++i) {
2804 MonoAotModule *amodule = g_ptr_array_index (modules, i);
2805
2806 if (amodule != method->klass->image->aot_module)
2807 index = find_extra_method_in_amodule (amodule, method, name);
2808 if (index != 0xffffff) {
2809 *out_amodule = amodule;
2810 break;
2811 }
2812 }
2813
2814 g_ptr_array_free (modules, TRUE);
2815
2816 g_free (name);
2817 return index;
2818 }
2819
2820 /*
2821 * mono_aot_get_method:
2822 *
2823 * Return a pointer to the AOTed native code for METHOD if it can be found,
2824 * NULL otherwise.
2825 * On platforms with function pointers, this doesn't return a function pointer.
2826 */
2827 gpointer
2828 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
2829 {
2830 MonoClass *klass = method->klass;
2831 guint32 method_index;
2832 MonoAotModule *amodule = klass->image->aot_module;
2833 guint8 *code;
2834
2835 if (!amodule)
2836 return NULL;
2837
2838 if (amodule->out_of_date)
2839 return NULL;
2840
2841 if ((method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
2842 (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
2843 (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
2844 (method->flags & METHOD_ATTRIBUTE_ABSTRACT))
2845 return NULL;
2846
2847 /*
2848 * Use the original method instead of its invoke-with-check wrapper.
2849 * This is not a problem when using full-aot, since it doesn't support
2850 * remoting.
2851 */
2852 if (mono_aot_only && method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)
2853 return mono_aot_get_method (domain, mono_marshal_method_from_wrapper (method));
2854
2855 g_assert (klass->inited);
2856
2857 /* Find method index */
2858 if (method->is_inflated && mono_method_is_generic_sharable_impl_full (method, FALSE, FALSE)) {
2859 /*
2860 * For generic methods, we store the fully shared instance in place of the
2861 * original method.
2862 */
2863 method = mono_method_get_declaring_generic_method (method);
2864 method_index = mono_metadata_token_index (method->token) - 1;
2865 } else if (method->is_inflated || !method->token) {
2866 /* This hash table is used to avoid the slower search in the extra_method_table in the AOT image */
2867 mono_aot_lock ();
2868 code = g_hash_table_lookup (amodule->method_to_code, method);
2869 mono_aot_unlock ();
2870 if (code)
2871 return code;
2872
2873 method_index = find_extra_method (method, &amodule);
2874 /*
2875 * Special case the ICollection<T> wrappers for arrays, as they cannot
2876 * be statically enumerated, and each wrapper ends up calling the same
2877 * method in Array.
2878 */
2879 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED && method->klass->rank && strstr (method->name, "System.Collections.Generic")) {
2880 MonoMethod *m = mono_aot_get_array_helper_from_wrapper (method);
2881
2882 code = mono_aot_get_method (domain, m);
2883 if (code) {
2884 if (mono_method_needs_static_rgctx_invoke (m, FALSE)) {
2885 code = mono_create_static_rgctx_trampoline (m, mono_create_ftnptr (domain, code));
2886 /* The call above returns an ftnptr */
2887 code = mono_get_addr_from_ftnptr (code);
2888 }
2889
2890 return code;
2891 }
2892 }
2893
2894 /*
2895 * Special case Array.GetGenericValueImpl which is a generic icall.
2896 * Generic sharing currently can't handle it, but the icall returns data using
2897 * an out parameter, so the managed-to-native wrappers can share the same code.
2898 */
2899 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass == mono_defaults.array_class && !strcmp (method->name, "GetGenericValueImpl")) {
2900 MonoMethod *m;
2901 MonoGenericContext ctx;
2902 MonoType *args [16];
2903
2904 if (mono_method_signature (method)->params [1]->type == MONO_TYPE_OBJECT)
2905 /* Avoid recursion */
2906 return NULL;
2907
2908 m = mono_class_get_method_from_name (mono_defaults.array_class, "GetGenericValueImpl", 2);
2909 g_assert (m);
2910
2911 memset (&ctx, 0, sizeof (ctx));
2912 args [0] = &mono_defaults.object_class->byval_arg;
2913 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
2914
2915 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method (m, &ctx), TRUE, TRUE);
2916
2917 /*
2918 * Get the code for the <object> instantiation which should be emitted into
2919 * the mscorlib aot image by the AOT compiler.
2920 */
2921 code = mono_aot_get_method (domain, m);
2922 if (code)
2923 return code;
2924 }
2925
2926 /* Same for CompareExchange<T> */
2927 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass->image == mono_defaults.corlib && !strcmp (method->klass->name_space, "System.Threading") && !strcmp (method->klass->name, "Interlocked") && !strcmp (method->name, "CompareExchange") && MONO_TYPE_IS_REFERENCE (mono_method_signature (method)->params [1])) {
2928 MonoMethod *m;
2929 MonoGenericContext ctx;
2930 MonoType *args [16];
2931 gpointer iter = NULL;
2932
2933 while ((m = mono_class_get_methods (method->klass, &iter))) {
2934 if (mono_method_signature (m)->generic_param_count && !strcmp (m->name, "CompareExchange"))
2935 break;
2936 }
2937 g_assert (m);
2938
2939 memset (&ctx, 0, sizeof (ctx));
2940 args [0] = &mono_defaults.object_class->byval_arg;
2941 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
2942
2943 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method (m, &ctx), TRUE, TRUE);
2944
2945 /* Avoid recursion */
2946 if (method == m)
2947 return NULL;
2948
2949 /*
2950 * Get the code for the <object> instantiation which should be emitted into
2951 * the mscorlib aot image by the AOT compiler.
2952 */
2953 code = mono_aot_get_method (domain, m);
2954 if (code)
2955 return code;
2956 }
2957
2958 if (method_index == 0xffffff && method->is_inflated && mono_method_is_generic_sharable_impl_full (method, FALSE, TRUE)) {
2959 /* Partial sharing */
2960 method_index = find_extra_method (mini_get_shared_method (method), &amodule);
2961 }
2962
2963 if (method_index == 0xffffff) {
2964 if (mono_aot_only && mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
2965 char *full_name;
2966
2967 full_name = mono_method_full_name (method, TRUE);
2968 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.\n", full_name);
2969 g_free (full_name);
2970 }
2971 return NULL;
2972 }
2973
2974 if (method_index == 0xffffff)
2975 return NULL;
2976
2977 /* Needed by find_jit_info */
2978 mono_aot_lock ();
2979 if (!amodule->extra_methods)
2980 amodule->extra_methods = g_hash_table_new (NULL, NULL);
2981 g_hash_table_insert (amodule->extra_methods, GUINT_TO_POINTER (method_index), method);
2982 mono_aot_unlock ();
2983 } else {
2984 /* Common case */
2985 method_index = mono_metadata_token_index (method->token) - 1;
2986 }
2987
2988 return load_method (domain, amodule, klass->image, method, method->token, method_index);
2989 }
2990
2991 /**
2992 * Same as mono_aot_get_method, but we try to avoid loading any metadata from the
2993 * method.
2994 */
2995 gpointer
2996 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
2997 {
2998 MonoAotModule *aot_module = image->aot_module;
2999 int method_index;
3000
3001 if (!aot_module)
3002 return NULL;
3003
3004 method_index = mono_metadata_token_index (token) - 1;
3005
3006 return load_method (domain, aot_module, image, NULL, token, method_index);
3007 }
3008
3009 typedef struct {
3010 guint8 *addr;
3011 gboolean res;
3012 } IsGotEntryUserData;
3013
3014 static void
3015 check_is_got_entry (gpointer key, gpointer value, gpointer user_data)
3016 {
3017 IsGotEntryUserData *data = (IsGotEntryUserData*)user_data;
3018 MonoAotModule *aot_module = (MonoAotModule*)value;
3019
3020 if (aot_module->got && (data->addr >= (guint8*)(aot_module->got)) && (data->addr < (guint8*)(aot_module->got + aot_module->info.got_size)))
3021 data->res = TRUE;
3022 }
3023
3024 gboolean
3025 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
3026 {
3027 IsGotEntryUserData user_data;
3028
3029 if (!aot_modules)
3030 return FALSE;
3031
3032 user_data.addr = addr;
3033 user_data.res = FALSE;
3034 mono_aot_lock ();
3035 g_hash_table_foreach (aot_modules, check_is_got_entry, &user_data);
3036 mono_aot_unlock ();
3037
3038 return user_data.res;
3039 }
3040
3041 typedef struct {
3042 guint8 *addr;
3043 MonoAotModule *module;
3044 } FindAotModuleUserData;
3045
3046 static void
3047 find_aot_module_cb (gpointer key, gpointer value, gpointer user_data)
3048 {
3049 FindAotModuleUserData *data = (FindAotModuleUserData*)user_data;
3050 MonoAotModule *aot_module = (MonoAotModule*)value;
3051
3052 if ((data->addr >= (guint8*)(aot_module->code)) && (data->addr < (guint8*)(aot_module->code_end)))
3053 data->module = aot_module;
3054 }
3055
3056 static inline MonoAotModule*
3057 find_aot_module (guint8 *code)
3058 {
3059 FindAotModuleUserData user_data;
3060
3061 if (!aot_modules)
3062 return NULL;
3063
3064 /* Reading these need no locking */
3065 if (((gsize)code < aot_code_low_addr) || ((gsize)code > aot_code_high_addr))
3066 return NULL;
3067
3068 user_data.addr = code;
3069 user_data.module = NULL;
3070
3071 mono_aot_lock ();
3072 g_hash_table_foreach (aot_modules, find_aot_module_cb, &user_data);
3073 mono_aot_unlock ();
3074
3075 return user_data.module;
3076 }
3077
3078 void
3079 mono_aot_patch_plt_entry (guint8 *code, gpointer *got, mgreg_t *regs, guint8 *addr)
3080 {
3081 /*
3082 * Since AOT code is only used in the root domain,
3083 * mono_domain_get () != mono_get_root_domain () means the calling method
3084 * is AppDomain:InvokeInDomain, so this is the same check as in
3085 * mono_method_same_domain () but without loading the metadata for the method.
3086 */
3087 if (mono_domain_get () == mono_get_root_domain ())
3088 mono_arch_patch_plt_entry (code, got, regs, addr);
3089 }
3090
3091 /*
3092 * mono_aot_plt_resolve:
3093 *
3094 * This function is called by the entries in the PLT to resolve the actual method that
3095 * needs to be called. It returns a trampoline to the method and patches the PLT entry.
3096 * Returns NULL if the something cannot be loaded.
3097 */
3098 gpointer
3099 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
3100 {
3101 #ifdef MONO_ARCH_AOT_SUPPORTED
3102 guint8 *p, *target, *plt_entry;
3103 MonoJumpInfo ji;
3104 MonoAotModule *module = (MonoAotModule*)aot_module;
3105 gboolean res, no_ftnptr = FALSE;
3106 MonoMemPool *mp;
3107
3108 //printf ("DYN: %p %d\n", aot_module, plt_info_offset);
3109
3110 p = &module->blob [plt_info_offset];
3111
3112 ji.type = decode_value (p, &p);
3113
3114 mp = mono_mempool_new_size (512);
3115 res = decode_patch (module, mp, &ji, p, &p);
3116
3117 if (!res) {
3118 mono_mempool_destroy (mp);
3119 return NULL;
3120 }
3121
3122 /*
3123 * Avoid calling resolve_patch_target in the full-aot case if possible, since
3124 * it would create a trampoline, and we don't need that.
3125 * We could do this only if the method does not need the special handling
3126 * in mono_magic_trampoline ().
3127 */
3128 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) &&
3129 !mono_method_needs_static_rgctx_invoke (ji.data.method, FALSE)) {
3130 target = mono_jit_compile_method (ji.data.method);
3131 no_ftnptr = TRUE;
3132 } else {
3133 target = mono_resolve_patch_target (NULL, mono_domain_get (), NULL, &ji, TRUE);
3134 }
3135
3136 /*
3137 * The trampoline expects us to return a function descriptor on platforms which use
3138 * it, but resolve_patch_target returns a direct function pointer for some type of
3139 * patches, so have to translate between the two.
3140 * FIXME: Clean this up, but how ?
3141 */
3142 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) {
3143 /* These should already have a function descriptor */
3144 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3145 /* Our function descriptors have a 0 environment, gcc created ones don't */
3146 if (ji.type != MONO_PATCH_INFO_INTERNAL_METHOD && ji.type != MONO_PATCH_INFO_JIT_ICALL_ADDR && ji.type != MONO_PATCH_INFO_ICALL_ADDR)
3147 g_assert (((gpointer*)target) [2] == 0);
3148 #endif
3149 /* Empty */
3150 } else if (!no_ftnptr) {
3151 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3152 g_assert (((gpointer*)target) [2] != 0);
3153 #endif
3154 target = mono_create_ftnptr (mono_domain_get (), target);
3155 }
3156
3157 mono_mempool_destroy (mp);
3158
3159 /* Patch the PLT entry with target which might be the actual method not a trampoline */
3160 plt_entry = mono_aot_get_plt_entry (code);
3161 g_assert (plt_entry);
3162 mono_aot_patch_plt_entry (plt_entry, module->got, NULL, target);
3163
3164 return target;
3165 #else
3166 g_assert_not_reached ();
3167 return NULL;
3168 #endif
3169 }
3170
3171 /**
3172 * init_plt:
3173 *
3174 * Initialize the PLT table of the AOT module. Called lazily when the first AOT
3175 * method in the module is loaded to avoid committing memory by writing to it.
3176 * LOCKING: Assumes the AOT lock is held.
3177 */
3178 static void
3179 init_plt (MonoAotModule *amodule)
3180 {
3181 int i;
3182 gpointer tramp;
3183
3184 if (amodule->plt_inited)
3185 return;
3186
3187 tramp = mono_create_specific_trampoline (amodule, MONO_TRAMPOLINE_AOT_PLT, mono_get_root_domain (), NULL);
3188
3189 /*
3190 * Initialize the PLT entries in the GOT to point to the default targets.
3191 */
3192
3193 tramp = mono_create_ftnptr (mono_domain_get (), tramp);
3194 for (i = 1; i < amodule->info.plt_size; ++i)
3195 /* All the default entries point to the AOT trampoline */
3196 ((gpointer*)amodule->got)[amodule->info.plt_got_offset_base + i] = tramp;
3197
3198 amodule->plt_inited = TRUE;
3199 }
3200
3201 /*
3202 * mono_aot_get_plt_entry:
3203 *
3204 * Return the address of the PLT entry called by the code at CODE if exists.
3205 */
3206 guint8*
3207 mono_aot_get_plt_entry (guint8 *code)
3208 {
3209 MonoAotModule *amodule = find_aot_module (code);
3210 guint8 *target = NULL;
3211
3212 if (!amodule)
3213 return NULL;
3214
3215 #ifdef TARGET_ARM
3216 if (amodule->thumb_end && code < amodule->thumb_end) {
3217 return mono_arm_get_thumb_plt_entry (code);
3218 }
3219 #endif
3220
3221 #ifdef MONO_ARCH_AOT_SUPPORTED
3222 target = mono_arch_get_call_target (code);
3223 #else
3224 g_assert_not_reached ();
3225 #endif
3226
3227 if ((target >= (guint8*)(amodule->plt)) && (target < (guint8*)(amodule->plt_end)))
3228 return target;
3229 else
3230 return NULL;
3231 }
3232
3233 /*
3234 * mono_aot_get_plt_info_offset:
3235 *
3236 * Return the PLT info offset belonging to the plt entry called by CODE.
3237 */
3238 guint32
3239 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
3240 {
3241 guint8 *plt_entry = mono_aot_get_plt_entry (code);
3242
3243 g_assert (plt_entry);
3244
3245 /* The offset is embedded inside the code after the plt entry */
3246 #ifdef MONO_ARCH_AOT_SUPPORTED
3247 return mono_arch_get_plt_info_offset (plt_entry, regs, code);
3248 #else
3249 g_assert_not_reached ();
3250 return 0;
3251 #endif
3252 }
3253
3254 static gpointer
3255 mono_create_ftnptr_malloc (guint8 *code)
3256 {
3257 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3258 MonoPPCFunctionDescriptor *ftnptr = g_malloc0 (sizeof (MonoPPCFunctionDescriptor));
3259
3260 ftnptr->code = code;
3261 ftnptr->toc = NULL;
3262 ftnptr->env = NULL;
3263
3264 return ftnptr;
3265 #else
3266 return code;
3267 #endif
3268 }
3269
3270 /*
3271 * mono_aot_register_jit_icall:
3272 *
3273 * Register a JIT icall which is called by trampolines in full-aot mode. This should
3274 * be called from mono_arch_init () during startup.
3275 */
3276 void
3277 mono_aot_register_jit_icall (const char *name, gpointer addr)
3278 {
3279 /* No need for locking */
3280 if (!aot_jit_icall_hash)
3281 aot_jit_icall_hash = g_hash_table_new (g_str_hash, g_str_equal);
3282 g_hash_table_insert (aot_jit_icall_hash, (char*)name, addr);
3283 }
3284
3285 /*
3286 * load_function:
3287 *
3288 * Load the function named NAME from the aot image.
3289 */
3290 static gpointer
3291 load_function (MonoAotModule *amodule, const char *name)
3292 {
3293 char *symbol;
3294 guint8 *p;
3295 int n_patches, pindex;
3296 MonoMemPool *mp;
3297 gpointer code;
3298
3299 /* Load the code */
3300
3301 symbol = g_strdup_printf ("%s", name);
3302 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&code);
3303 g_free (symbol);
3304 if (!code)
3305 g_error ("Symbol '%s' not found in AOT file '%s'.\n", name, amodule->aot_name);
3306
3307 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT FOUND function '%s' in AOT file '%s'.\n", name, amodule->aot_name);
3308
3309 /* Load info */
3310
3311 symbol = g_strdup_printf ("%s_p", name);
3312 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&p);
3313 g_free (symbol);
3314 if (!p)
3315 /* Nothing to patch */
3316 return code;
3317
3318 p = amodule->blob + *(guint32*)p;
3319
3320 /* Similar to mono_aot_load_method () */
3321
3322 n_patches = decode_value (p, &p);
3323
3324 if (n_patches) {
3325 MonoJumpInfo *patches;
3326 guint32 *got_slots;
3327
3328 mp = mono_mempool_new ();
3329
3330 patches = load_patch_info (amodule, mp, n_patches, &got_slots, p, &p);
3331 g_assert (patches);
3332
3333 for (pindex = 0; pindex < n_patches; ++pindex) {
3334 MonoJumpInfo *ji = &patches [pindex];
3335 gpointer target;
3336
3337 if (amodule->got [got_slots [pindex]])
3338 continue;
3339
3340 /*
3341 * When this code is executed, the runtime may not be initalized yet, so
3342 * resolve the patch info by hand.
3343 */
3344 if (ji->type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
3345 if (!strcmp (ji->data.name, "mono_get_lmf_addr")) {
3346 target = mono_get_lmf_addr;
3347 } else if (!strcmp (ji->data.name, "mono_thread_force_interruption_checkpoint")) {
3348 target = mono_thread_force_interruption_checkpoint;
3349 } else if (!strcmp (ji->data.name, "mono_exception_from_token")) {
3350 target = mono_exception_from_token;
3351 } else if (!strcmp (ji->data.name, "mono_throw_exception")) {
3352 target = mono_get_throw_exception ();
3353 } else if (strstr (ji->data.name, "trampoline_func_") == ji->data.name) {
3354 int tramp_type2 = atoi (ji->data.name + strlen ("trampoline_func_"));
3355 target = (gpointer)mono_get_trampoline_func (tramp_type2);
3356 } else if (strstr (ji->data.name, "specific_trampoline_lazy_fetch_") == ji->data.name) {
3357 /* atoll is needed because the the offset is unsigned */
3358 guint32 slot;
3359 int res;
3360
3361 res = sscanf (ji->data.name, "specific_trampoline_lazy_fetch_%u", &slot);
3362 g_assert (res == 1);
3363 target = mono_create_specific_trampoline (GUINT_TO_POINTER (slot), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, mono_get_root_domain (), NULL);
3364 target = mono_create_ftnptr_malloc (target);
3365 } else if (!strcmp (ji->data.name, "specific_trampoline_monitor_enter")) {
3366 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_MONITOR_ENTER, mono_get_root_domain (), NULL);
3367 target = mono_create_ftnptr_malloc (target);
3368 } else if (!strcmp (ji->data.name, "specific_trampoline_monitor_exit")) {
3369 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_MONITOR_EXIT, mono_get_root_domain (), NULL);
3370 target = mono_create_ftnptr_malloc (target);
3371 } else if (!strcmp (ji->data.name, "specific_trampoline_generic_class_init")) {
3372 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_GENERIC_CLASS_INIT, mono_get_root_domain (), NULL);
3373 target = mono_create_ftnptr_malloc (target);
3374 } else if (!strcmp (ji->data.name, "mono_thread_get_and_clear_pending_exception")) {
3375 target = mono_thread_get_and_clear_pending_exception;
3376 } else if (strstr (ji->data.name, "generic_trampoline_")) {
3377 target = mono_aot_get_trampoline (ji->data.name);
3378 } else if (aot_jit_icall_hash && g_hash_table_lookup (aot_jit_icall_hash, ji->data.name)) {
3379 /* Registered by mono_arch_init () */
3380 target = g_hash_table_lookup (aot_jit_icall_hash, ji->data.name);
3381 } else {
3382 fprintf (stderr, "Unknown relocation '%s'\n", ji->data.name);
3383 g_assert_not_reached ();
3384 target = NULL;
3385 }
3386 } else {
3387 /* Hopefully the code doesn't have patches which need method or
3388 * domain to be set.
3389 */
3390 target = mono_resolve_patch_target (NULL, NULL, code, ji, FALSE);
3391 g_assert (target);
3392 }
3393
3394 amodule->got [got_slots [pindex]] = target;
3395 }
3396
3397 g_free (got_slots);
3398
3399 mono_mempool_destroy (mp);
3400 }
3401
3402 return code;
3403 }
3404
3405 /*
3406 * Return the trampoline identified by NAME from the mscorlib AOT file.
3407 * On ppc64, this returns a function descriptor.
3408 */
3409 gpointer
3410 mono_aot_get_trampoline (const char *name)
3411 {
3412 MonoImage *image;
3413 MonoAotModule *amodule;
3414
3415 image = mono_defaults.corlib;
3416 g_assert (image);
3417
3418 amodule = image->aot_module;
3419 g_assert (amodule);
3420
3421 return mono_create_ftnptr_malloc (load_function (amodule, name));
3422 }
3423
3424 /* Return a given kind of trampoline */
3425 static gpointer
3426 get_numerous_trampoline (MonoAotTrampoline tramp_type, int n_got_slots, MonoAotModule **out_amodule, guint32 *got_offset, guint32 *out_tramp_size)
3427 {
3428 MonoAotModule *amodule;
3429 int index, tramp_size;
3430 MonoImage *image;
3431
3432 /* Currently, we keep all trampolines in the mscorlib AOT image */
3433 image = mono_defaults.corlib;
3434 g_assert (image);
3435
3436 mono_aot_lock ();
3437
3438 amodule = image->aot_module;
3439 g_assert (amodule);
3440
3441 *out_amodule = amodule;
3442
3443 if (amodule->trampoline_index [tramp_type] == amodule->info.num_trampolines [tramp_type])
3444 g_error ("Ran out of trampolines of type %d in '%s' (%d)\n", tramp_type, image->name, amodule->info.num_trampolines [tramp_type]);
3445
3446 index = amodule->trampoline_index [tramp_type] ++;
3447
3448 mono_aot_unlock ();
3449
3450 *got_offset = amodule->info.trampoline_got_offset_base [tramp_type] + (index * n_got_slots);
3451
3452 tramp_size = amodule->info.trampoline_size [tramp_type];
3453
3454 if (out_tramp_size)
3455 *out_tramp_size = tramp_size;
3456
3457 return amodule->trampolines [tramp_type] + (index * tramp_size);
3458 }
3459
3460 /*
3461 * Return a specific trampoline from the AOT file.
3462 */
3463 gpointer
3464 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
3465 {
3466 MonoAotModule *amodule;
3467 guint32 got_offset, tramp_size;
3468 guint8 *code, *tramp;
3469 static gpointer generic_trampolines [MONO_TRAMPOLINE_NUM];
3470 static gboolean inited;
3471 static guint32 num_trampolines;
3472
3473 if (!inited) {
3474 mono_aot_lock ();
3475
3476 if (!inited) {
3477 mono_counters_register ("Specific trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &num_trampolines);
3478 inited = TRUE;
3479 }
3480
3481 mono_aot_unlock ();
3482 }
3483
3484 num_trampolines ++;
3485
3486 if (!generic_trampolines [tramp_type]) {
3487 char *symbol;
3488
3489 symbol = mono_get_generic_trampoline_name (tramp_type);
3490 generic_trampolines [tramp_type] = mono_aot_get_trampoline (symbol);
3491 g_free (symbol);
3492 }
3493
3494 tramp = generic_trampolines [tramp_type];
3495 g_assert (tramp);
3496
3497 code = get_numerous_trampoline (MONO_AOT_TRAMP_SPECIFIC, 2, &amodule, &got_offset, &tramp_size);
3498
3499 amodule->got [got_offset] = tramp;
3500 amodule->got [got_offset + 1] = arg1;
3501
3502 if (code_len)
3503 *code_len = tramp_size;
3504
3505 return code;
3506 }
3507
3508 gpointer
3509 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
3510 {
3511 MonoAotModule *amodule;
3512 guint8 *code;
3513 guint32 got_offset;
3514
3515 code = get_numerous_trampoline (MONO_AOT_TRAMP_STATIC_RGCTX, 2, &amodule, &got_offset, NULL);
3516
3517 amodule->got [got_offset] = ctx;
3518 amodule->got [got_offset + 1] = addr;
3519
3520 /* The caller expects an ftnptr */
3521 return mono_create_ftnptr (mono_domain_get (), code);
3522 }
3523
3524 gpointer
3525 mono_aot_get_unbox_trampoline (MonoMethod *method)
3526 {
3527 guint32 method_index = mono_metadata_token_index (method->token) - 1;
3528 MonoAotModule *amodule;
3529 char *symbol;
3530 gpointer code;
3531
3532 if (method->is_inflated && !mono_method_is_generic_sharable_impl (method, FALSE)) {
3533 guint32 index = find_extra_method (method, &amodule);
3534 g_assert (index != 0xffffff);
3535
3536 symbol = g_strdup_printf ("ut_e_%d", index);
3537 } else {
3538 amodule = method->klass->image->aot_module;
3539 g_assert (amodule);
3540
3541 symbol = g_strdup_printf ("ut_%d", method_index);
3542 }
3543 code = load_function (amodule, symbol);
3544 g_free (symbol);
3545
3546 /* The caller expects an ftnptr */
3547 return mono_create_ftnptr (mono_domain_get (), code);
3548 }
3549
3550 gpointer
3551 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
3552 {
3553 char *symbol;
3554 gpointer code;
3555
3556 symbol = mono_get_rgctx_fetch_trampoline_name (slot);
3557 code = load_function (mono_defaults.corlib->aot_module, symbol);
3558 g_free (symbol);
3559 /* The caller expects an ftnptr */
3560 return mono_create_ftnptr (mono_domain_get (), code);
3561 }
3562
3563 gpointer
3564 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
3565 {
3566 guint32 got_offset;
3567 gpointer code;
3568 gpointer *buf;
3569 int i, index, real_count;
3570 MonoAotModule *amodule;
3571
3572 code = get_numerous_trampoline (MONO_AOT_TRAMP_IMT_THUNK, 1, &amodule, &got_offset, NULL);
3573
3574 real_count = 0;
3575 for (i = 0; i < count; ++i) {
3576 MonoIMTCheckItem *item = imt_entries [i];
3577
3578 if (item->is_equals)
3579 real_count ++;
3580 }
3581
3582 /* Save the entries into an array */
3583 buf = mono_domain_alloc (domain, (real_count + 1) * 2 * sizeof (gpointer));
3584 index = 0;
3585 for (i = 0; i < count; ++i) {
3586 MonoIMTCheckItem *item = imt_entries [i];
3587
3588 if (!item->is_equals)
3589 continue;
3590
3591 g_assert (item->key);
3592
3593 buf [(index * 2)] = item->key;
3594 if (item->has_target_code) {
3595 gpointer *p = mono_domain_alloc (domain, sizeof (gpointer));
3596 *p = item->value.target_code;
3597 buf [(index * 2) + 1] = p;
3598 } else {
3599 buf [(index * 2) + 1] = &(vtable->vtable [item->value.vtable_slot]);
3600 }
3601 index ++;
3602 }
3603 buf [(index * 2)] = NULL;
3604 buf [(index * 2) + 1] = fail_tramp;
3605
3606 amodule->got [got_offset] = buf;
3607
3608 return code;
3609 }
3610
3611 /*
3612 * mono_aot_set_make_unreadable:
3613 *
3614 * Set whenever to make all mmaped memory unreadable. In conjuction with a
3615 * SIGSEGV handler, this is useful to find out which pages the runtime tries to read.
3616 */
3617 void
3618 mono_aot_set_make_unreadable (gboolean unreadable)
3619 {
3620 static int inited;
3621
3622 make_unreadable = unreadable;
3623
3624 if (make_unreadable && !inited) {
3625 mono_counters_register ("AOT pagefaults", MONO_COUNTER_JIT | MONO_COUNTER_INT, &n_pagefaults);
3626 }
3627 }
3628
3629 typedef struct {
3630 MonoAotModule *module;
3631 guint8 *ptr;
3632 } FindMapUserData;
3633
3634 static void
3635 find_map (gpointer key, gpointer value, gpointer user_data)
3636 {
3637 MonoAotModule *module = (MonoAotModule*)value;
3638 FindMapUserData *data = (FindMapUserData*)user_data;
3639
3640 if (!data->module)
3641 if ((data->ptr >= module->mem_begin) && (data->ptr < module->mem_end))
3642 data->module = module;
3643 }
3644
3645 static MonoAotModule*
3646 find_module_for_addr (void *ptr)
3647 {
3648 FindMapUserData data;
3649
3650 if (!make_unreadable)
3651 return NULL;
3652
3653 data.module = NULL;
3654 data.ptr = (guint8*)ptr;
3655
3656 mono_aot_lock ();
3657 g_hash_table_foreach (aot_modules, (GHFunc)find_map, &data);
3658 mono_aot_unlock ();
3659
3660 return data.module;
3661 }
3662
3663 /*
3664 * mono_aot_is_pagefault:
3665 *
3666 * Should be called from a SIGSEGV signal handler to find out whenever @ptr is
3667 * within memory allocated by this module.
3668 */
3669 gboolean
3670 mono_aot_is_pagefault (void *ptr)
3671 {
3672 if (!make_unreadable)
3673 return FALSE;
3674
3675 /*
3676 * Not signal safe, but SIGSEGV's are synchronous, and
3677 * this is only turned on by a MONO_DEBUG option.
3678 */
3679 return find_module_for_addr (ptr) != NULL;
3680 }
3681
3682 /*
3683 * mono_aot_handle_pagefault:
3684 *
3685 * Handle a pagefault caused by an unreadable page by making it readable again.
3686 */
3687 void
3688 mono_aot_handle_pagefault (void *ptr)
3689 {
3690 #ifndef PLATFORM_WIN32
3691 guint8* start = (guint8*)ROUND_DOWN (((gssize)ptr), mono_pagesize ());
3692 int res;
3693
3694 mono_aot_lock ();
3695 res = mono_mprotect (start, mono_pagesize (), MONO_MMAP_READ|MONO_MMAP_WRITE|MONO_MMAP_EXEC);
3696 g_assert (res == 0);
3697
3698 n_pagefaults ++;
3699 mono_aot_unlock ();
3700 #endif
3701 }
3702
3703 #else
3704 /* AOT disabled */
3705
3706 void
3707 mono_aot_init (void)
3708 {
3709 }
3710
3711 gpointer
3712 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
3713 {
3714 return NULL;
3715 }
3716
3717 gboolean
3718 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
3719 {
3720 return FALSE;
3721 }
3722
3723 gboolean
3724 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
3725 {
3726 return FALSE;
3727 }
3728
3729 gboolean
3730 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
3731 {
3732 return FALSE;
3733 }
3734
3735 MonoJitInfo *
3736 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
3737 {
3738 return NULL;
3739 }
3740
3741 gpointer
3742 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
3743 {
3744 return NULL;
3745 }
3746
3747 guint8*
3748 mono_aot_get_plt_entry (guint8 *code)
3749 {
3750 return NULL;
3751 }
3752
3753 gpointer
3754 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
3755 {
3756 return NULL;
3757 }
3758
3759 void
3760 mono_aot_patch_plt_entry (guint8 *code, gpointer *got, mgreg_t *regs, guint8 *addr)
3761 {
3762 }
3763
3764 gpointer
3765 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
3766 {
3767 return NULL;
3768 }
3769
3770 guint32
3771 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
3772 {
3773 g_assert_not_reached ();
3774
3775 return 0;
3776 }
3777
3778 gpointer
3779 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
3780 {
3781 g_assert_not_reached ();
3782 return NULL;
3783 }
3784
3785 gpointer
3786 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
3787 {
3788 g_assert_not_reached ();
3789 return NULL;
3790 }
3791
3792 gpointer
3793 mono_aot_get_trampoline (const char *name)
3794 {
3795 g_assert_not_reached ();
3796 return NULL;
3797 }
3798
3799 gpointer
3800 mono_aot_get_unbox_trampoline (MonoMethod *method)
3801 {
3802 g_assert_not_reached ();
3803 return NULL;
3804 }
3805
3806 gpointer
3807 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
3808 {
3809 g_assert_not_reached ();
3810 return NULL;
3811 }
3812
3813 gpointer
3814 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
3815 {
3816 g_assert_not_reached ();
3817 return NULL;
3818 }
3819
3820 guint8*
3821 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
3822 {
3823 g_assert_not_reached ();
3824 return NULL;
3825 }
3826
3827 void
3828 mono_aot_register_jit_icall (const char *name, gpointer addr)
3829 {
3830 }
3831
3832 #endif