2 * aot-runtime.c: mono Ahead of Time compiler
5 * Dietmar Maurer (dietmar@ximian.com)
6 * Zoltan Varga (vargaz@gmail.com)
8 * (C) 2002 Ximian, Inc.
9 * Copyright 2003-2011 Novell, Inc.
10 * Copyright 2011 Xamarin, Inc.
14 #include <sys/types.h>
20 #ifdef HAVE_SYS_MMAN_H
29 #ifdef HAVE_EXECINFO_H
36 #ifdef HAVE_SYS_WAIT_H
37 #include <sys/wait.h> /* for WIFEXITED, WEXITSTATUS */
40 #include <mono/metadata/abi-details.h>
41 #include <mono/metadata/tabledefs.h>
42 #include <mono/metadata/class.h>
43 #include <mono/metadata/object.h>
44 #include <mono/metadata/tokentype.h>
45 #include <mono/metadata/appdomain.h>
46 #include <mono/metadata/debug-helpers.h>
47 #include <mono/metadata/assembly.h>
48 #include <mono/metadata/metadata-internals.h>
49 #include <mono/metadata/marshal.h>
50 #include <mono/metadata/gc-internals.h>
51 #include <mono/metadata/threads-types.h>
52 #include <mono/metadata/mono-endian.h>
53 #include <mono/utils/mono-logger-internals.h>
54 #include <mono/utils/mono-mmap.h>
55 #include <mono/utils/mono-compiler.h>
56 #include <mono/utils/mono-counters.h>
57 #include <mono/utils/mono-digest.h>
60 #include "seq-points.h"
62 #include "debugger-agent.h"
63 #include "aot-compiler.h"
68 #define ENABLE_AOT_CACHE
71 /* Number of got entries shared between the JIT and LLVM GOT */
72 #define N_COMMON_GOT_ENTRIES 10
74 #define ALIGN_TO(val,align) ((((guint64)val) + ((align) - 1)) & ~((align) - 1))
75 #define ALIGN_PTR_TO(ptr,align) (gpointer)((((gssize)(ptr)) + (align - 1)) & (~(align - 1)))
76 #define ROUND_DOWN(VALUE,SIZE) ((VALUE) & ~((SIZE) - 1))
83 typedef struct MonoAotModule {
85 /* Pointer to the Global Offset Table */
89 GHashTable *name_cache;
90 GHashTable *extra_methods;
91 /* Maps methods to their code */
92 GHashTable *method_to_code;
93 /* Maps pointers into the method info to the methods themselves */
94 GHashTable *method_ref_to_method;
95 MonoAssemblyName *image_names;
97 MonoAssembly *assembly;
98 MonoImage **image_table;
99 guint32 image_table_len;
100 gboolean out_of_date;
102 gboolean got_initializing;
105 guint8 *jit_code_start;
106 guint8 *jit_code_end;
107 guint8 *llvm_code_start;
108 guint8 *llvm_code_end;
112 /* Maps method indexes to their code */
114 /* Sorted array of method addresses */
115 gpointer *sorted_methods;
116 /* Method indexes for each method in sorted_methods */
117 int *sorted_method_indexes;
118 /* The length of the two tables above */
119 int sorted_methods_len;
120 guint32 *method_info_offsets;
121 guint32 *ex_info_offsets;
122 guint32 *class_info_offsets;
123 guint32 *methods_loaded;
124 guint16 *class_name_table;
125 guint32 *extra_method_table;
126 guint32 *extra_method_info_offsets;
127 guint32 *unbox_trampolines;
128 guint32 *unbox_trampolines_end;
129 guint32 *unbox_trampoline_addresses;
132 /* Points to the mono EH data created by LLVM */
133 guint8 *mono_eh_frame;
135 /* Points to the trampolines */
136 guint8 *trampolines [MONO_AOT_TRAMP_NUM];
137 /* The first unused trampoline of each kind */
138 guint32 trampoline_index [MONO_AOT_TRAMP_NUM];
140 gboolean use_page_trampolines;
142 MonoAotFileInfo info;
147 JitInfoMap *async_jit_info_table;
153 unsigned char *trampolines;
154 unsigned char *trampolines_end;
157 static GHashTable *aot_modules;
158 #define mono_aot_lock() mono_os_mutex_lock (&aot_mutex)
159 #define mono_aot_unlock() mono_os_mutex_unlock (&aot_mutex)
160 static mono_mutex_t aot_mutex;
163 * Maps assembly names to the mono_aot_module_<NAME>_info symbols in the
164 * AOT modules registered by mono_aot_register_module ().
166 static GHashTable *static_aot_modules;
169 * Maps MonoJitInfo* to the aot module they belong to, this can be different
170 * from ji->method->klass->image's aot module for generic instances.
172 static GHashTable *ji_to_amodule;
175 * Whenever to AOT compile loaded assemblies on demand and store them in
178 static gboolean enable_aot_cache = FALSE;
180 static gboolean mscorlib_aot_loaded;
183 static gint32 mono_last_aot_method = -1;
185 static gboolean make_unreadable = FALSE;
186 static guint32 name_table_accesses = 0;
187 static guint32 n_pagefaults = 0;
189 /* Used to speed-up find_aot_module () */
190 static gsize aot_code_low_addr = (gssize)-1;
191 static gsize aot_code_high_addr = 0;
194 static gint32 async_jit_info_size;
196 static GHashTable *aot_jit_icall_hash;
199 #define USE_PAGE_TRAMPOLINES ((MonoAotModule*)mono_defaults.corlib->aot_module)->use_page_trampolines
201 #define USE_PAGE_TRAMPOLINES 0
204 #define mono_aot_page_lock() mono_os_mutex_lock (&aot_page_mutex)
205 #define mono_aot_page_unlock() mono_os_mutex_unlock (&aot_page_mutex)
206 static mono_mutex_t aot_page_mutex;
208 static MonoAotModule *mscorlib_aot_module;
211 init_plt (MonoAotModule *info);
214 compute_llvm_code_range (MonoAotModule *amodule, guint8 **code_start, guint8 **code_end);
217 init_llvm_method (MonoAotModule *amodule, guint32 method_index, MonoMethod *method, MonoClass *init_class, MonoGenericContext *context);
220 decode_patches (MonoAotModule *amodule, MonoMemPool *mp, int n_patches, gboolean llvm, guint32 *got_offsets);
223 amodule_lock (MonoAotModule *amodule)
225 mono_os_mutex_lock (&amodule->mutex);
229 amodule_unlock (MonoAotModule *amodule)
231 mono_os_mutex_unlock (&amodule->mutex);
237 * Load one of the images referenced by AMODULE. Returns NULL if the image is not
238 * found, and sets the loader error if SET_ERROR is TRUE.
241 load_image (MonoAotModule *amodule, int index, gboolean set_error)
243 MonoAssembly *assembly;
244 MonoImageOpenStatus status;
246 g_assert (index < amodule->image_table_len);
248 if (amodule->image_table [index])
249 return amodule->image_table [index];
250 if (amodule->out_of_date)
253 assembly = mono_assembly_load (&amodule->image_names [index], amodule->assembly->basedir, &status);
255 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);
256 amodule->out_of_date = TRUE;
259 char *full_name = mono_stringify_assembly_name (&amodule->image_names [index]);
260 mono_loader_set_error_assembly_load (full_name, FALSE);
266 if (strcmp (assembly->image->guid, amodule->image_guids [index])) {
267 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);
268 amodule->out_of_date = TRUE;
272 amodule->image_table [index] = assembly->image;
273 return assembly->image;
277 decode_value (guint8 *ptr, guint8 **rptr)
282 if ((b & 0x80) == 0){
285 } else if ((b & 0x40) == 0){
286 len = ((b & 0x3f) << 8 | ptr [1]);
288 } else if (b != 0xff) {
289 len = ((b & 0x1f) << 24) |
296 len = (ptr [1] << 24) | (ptr [2] << 16) | (ptr [3] << 8) | ptr [4];
302 //printf ("DECODE: %d.\n", len);
307 * mono_aot_get_offset:
309 * Decode an offset table emitted by emit_offset_table (), returning the INDEXth
313 mono_aot_get_offset (guint32 *table, int index)
315 int i, group, ngroups, index_entry_size;
316 int start_offset, offset, group_size;
317 guint8 *data_start, *p;
318 guint32 *index32 = NULL;
319 guint16 *index16 = NULL;
321 /* noffsets = table [0]; */
322 group_size = table [1];
324 index_entry_size = table [3];
325 group = index / group_size;
327 if (index_entry_size == 2) {
328 index16 = (guint16*)&table [4];
329 data_start = (guint8*)&index16 [ngroups];
330 p = data_start + index16 [group];
332 index32 = (guint32*)&table [4];
333 data_start = (guint8*)&index32 [ngroups];
334 p = data_start + index32 [group];
337 /* offset will contain the value of offsets [group * group_size] */
338 offset = start_offset = decode_value (p, &p);
339 for (i = group * group_size + 1; i <= index; ++i) {
340 offset += decode_value (p, &p);
343 //printf ("Offset lookup: %d -> %d, start=%d, p=%d\n", index, offset, start_offset, table [3 + group]);
349 decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf);
352 decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf);
355 decode_type (MonoAotModule *module, guint8 *buf, guint8 **endbuf);
357 static MonoGenericInst*
358 decode_generic_inst (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
361 MonoType **type_argv;
362 MonoGenericInst *inst;
365 type_argc = decode_value (p, &p);
366 type_argv = g_new0 (MonoType*, type_argc);
368 for (i = 0; i < type_argc; ++i) {
369 MonoClass *pclass = decode_klass_ref (module, p, &p);
374 type_argv [i] = &pclass->byval_arg;
377 inst = mono_metadata_get_generic_inst (type_argc, type_argv);
386 decode_generic_context (MonoAotModule *module, MonoGenericContext *ctx, guint8 *buf, guint8 **endbuf)
393 argc = decode_value (p, &p);
396 ctx->class_inst = decode_generic_inst (module, p, &p);
397 if (!ctx->class_inst)
401 argc = decode_value (p, &p);
404 ctx->method_inst = decode_generic_inst (module, p, &p);
405 if (!ctx->method_inst)
414 decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
418 MonoClass *klass = NULL, *eklass;
419 guint32 token, rank, idx;
423 reftype = decode_value (p, &p);
430 case MONO_AOT_TYPEREF_TYPEDEF_INDEX:
431 idx = decode_value (p, &p);
432 image = load_image (module, 0, TRUE);
435 klass = mono_class_get_checked (image, MONO_TOKEN_TYPE_DEF + idx, &error);
436 g_assert (mono_error_ok (&error));
438 case MONO_AOT_TYPEREF_TYPEDEF_INDEX_IMAGE:
439 idx = decode_value (p, &p);
440 image = load_image (module, decode_value (p, &p), TRUE);
443 klass = mono_class_get_checked (image, MONO_TOKEN_TYPE_DEF + idx, &error);
444 g_assert (mono_error_ok (&error));
446 case MONO_AOT_TYPEREF_TYPESPEC_TOKEN:
447 token = decode_value (p, &p);
448 image = module->assembly->image;
451 klass = mono_class_get_checked (image, token, &error);
452 g_assert (mono_error_ok (&error));
454 case MONO_AOT_TYPEREF_GINST: {
456 MonoGenericContext ctx;
459 gclass = decode_klass_ref (module, p, &p);
462 g_assert (gclass->generic_container);
464 memset (&ctx, 0, sizeof (ctx));
465 ctx.class_inst = decode_generic_inst (module, p, &p);
468 type = mono_class_inflate_generic_type (&gclass->byval_arg, &ctx);
469 klass = mono_class_from_mono_type (type);
470 mono_metadata_free_type (type);
473 case MONO_AOT_TYPEREF_VAR: {
475 MonoGenericContainer *container = NULL;
476 int type = decode_value (p, &p);
477 int num = decode_value (p, &p);
478 gboolean is_not_anonymous = decode_value (p, &p);
479 MonoType *gshared_constraint = NULL;
481 if (is_not_anonymous) {
482 gboolean is_method = decode_value (p, &p);
485 MonoMethod *method_def;
486 g_assert (type == MONO_TYPE_MVAR);
487 method_def = decode_resolve_method_ref (module, p, &p);
491 container = mono_method_get_generic_container (method_def);
493 MonoClass *class_def;
494 g_assert (type == MONO_TYPE_VAR);
495 class_def = decode_klass_ref (module, p, &p);
499 container = class_def->generic_container;
502 gboolean has_gshared_constraint = decode_value (p, &p);
503 if (has_gshared_constraint) {
504 MonoClass *par_klass;
506 gshared_constraint = decode_type (module, p, &p);
507 if (!gshared_constraint)
510 par_klass = decode_klass_ref (module, p, &p);
514 t = mini_get_shared_gparam (&par_klass->byval_arg, gshared_constraint);
517 // We didn't decode is_method, so we have to infer it from type enum.
518 container = get_anonymous_container_for_image (module->assembly->image, type == MONO_TYPE_MVAR);
522 klass = mono_class_from_mono_type (t);
524 t = g_new0 (MonoType, 1);
526 if (is_not_anonymous) {
527 t->data.generic_param = mono_generic_container_get_param (container, num);
528 g_assert (gshared_constraint == NULL);
531 MonoGenericParam *par = (MonoGenericParam*)mono_image_alloc0 (module->assembly->image, sizeof (MonoGenericParamFull));
532 par->owner = container;
534 par->gshared_constraint = gshared_constraint;
535 t->data.generic_param = par;
536 ((MonoGenericParamFull*)par)->info.name = make_generic_name_string (module->assembly->image, num);
538 // FIXME: Maybe use types directly to avoid
539 // the overhead of creating MonoClass-es
540 klass = mono_class_from_mono_type (t);
546 case MONO_AOT_TYPEREF_ARRAY:
548 rank = decode_value (p, &p);
549 eklass = decode_klass_ref (module, p, &p);
550 klass = mono_array_class_get (eklass, rank);
552 case MONO_AOT_TYPEREF_PTR: {
555 t = decode_type (module, p, &p);
558 klass = mono_class_from_mono_type (t);
562 case MONO_AOT_TYPEREF_BLOB_INDEX: {
563 guint32 offset = decode_value (p, &p);
566 p2 = module->blob + offset;
567 klass = decode_klass_ref (module, p2, &p2);
571 g_assert_not_reached ();
574 //printf ("BLA: %s\n", mono_type_full_name (&klass->byval_arg));
579 static MonoClassField*
580 decode_field_info (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
582 MonoClass *klass = decode_klass_ref (module, buf, &buf);
589 token = MONO_TOKEN_FIELD_DEF + decode_value (p, &p);
593 return mono_class_get_field (klass, token);
597 * Parse a MonoType encoded by encode_type () in aot-compiler.c. Return malloc-ed
601 decode_type (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
606 t = g_malloc0 (sizeof (MonoType));
609 if (*p == MONO_TYPE_PINNED) {
612 } else if (*p == MONO_TYPE_BYREF) {
625 case MONO_TYPE_BOOLEAN:
639 case MONO_TYPE_STRING:
640 case MONO_TYPE_OBJECT:
641 case MONO_TYPE_TYPEDBYREF:
643 case MONO_TYPE_VALUETYPE:
644 case MONO_TYPE_CLASS:
645 t->data.klass = decode_klass_ref (module, p, &p);
647 case MONO_TYPE_SZARRAY:
648 t->data.klass = decode_klass_ref (module, p, &p);
654 t->data.type = decode_type (module, p, &p);
656 case MONO_TYPE_GENERICINST: {
658 MonoGenericContext ctx;
662 gclass = decode_klass_ref (module, p, &p);
665 g_assert (gclass->generic_container);
667 memset (&ctx, 0, sizeof (ctx));
668 ctx.class_inst = decode_generic_inst (module, p, &p);
671 type = mono_class_inflate_generic_type (&gclass->byval_arg, &ctx);
672 klass = mono_class_from_mono_type (type);
673 t->data.generic_class = klass->generic_class;
676 case MONO_TYPE_ARRAY: {
677 MonoArrayType *array;
680 // FIXME: memory management
681 array = g_new0 (MonoArrayType, 1);
682 array->eklass = decode_klass_ref (module, p, &p);
685 array->rank = decode_value (p, &p);
686 array->numsizes = decode_value (p, &p);
689 array->sizes = g_malloc0 (sizeof (int) * array->numsizes);
690 for (i = 0; i < array->numsizes; ++i)
691 array->sizes [i] = decode_value (p, &p);
693 array->numlobounds = decode_value (p, &p);
694 if (array->numlobounds)
695 array->lobounds = g_malloc0 (sizeof (int) * array->numlobounds);
696 for (i = 0; i < array->numlobounds; ++i)
697 array->lobounds [i] = decode_value (p, &p);
698 t->data.array = array;
702 case MONO_TYPE_MVAR: {
703 MonoClass *klass = decode_klass_ref (module, p, &p);
706 t->data.generic_param = klass->byval_arg.data.generic_param;
710 g_assert_not_reached ();
718 // FIXME: Error handling, memory management
720 static MonoMethodSignature*
721 decode_signature_with_target (MonoAotModule *module, MonoMethodSignature *target, guint8 *buf, guint8 **endbuf)
723 MonoMethodSignature *sig;
725 int i, param_count, call_conv;
727 gboolean hasthis, explicit_this, has_gen_params;
731 has_gen_params = (flags & 0x10) != 0;
732 hasthis = (flags & 0x20) != 0;
733 explicit_this = (flags & 0x40) != 0;
734 call_conv = flags & 0x0F;
737 /* gen_param_count = */ decode_value (p, &p);
738 param_count = decode_value (p, &p);
739 if (target && param_count != target->param_count)
741 sig = g_malloc0 (MONO_SIZEOF_METHOD_SIGNATURE + param_count * sizeof (MonoType *));
742 sig->param_count = param_count;
743 sig->sentinelpos = -1;
744 sig->hasthis = hasthis;
745 sig->explicit_this = explicit_this;
746 sig->call_convention = call_conv;
747 sig->param_count = param_count;
748 sig->ret = decode_type (module, p, &p);
749 for (i = 0; i < param_count; ++i) {
750 if (*p == MONO_TYPE_SENTINEL) {
751 g_assert (sig->call_convention == MONO_CALL_VARARG);
752 sig->sentinelpos = i;
755 sig->params [i] = decode_type (module, p, &p);
758 if (sig->call_convention == MONO_CALL_VARARG && sig->sentinelpos == -1)
759 sig->sentinelpos = sig->param_count;
766 static MonoMethodSignature*
767 decode_signature (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
769 return decode_signature_with_target (module, NULL, buf, endbuf);
773 sig_matches_target (MonoAotModule *module, MonoMethod *target, guint8 *buf, guint8 **endbuf)
775 MonoMethodSignature *sig;
779 sig = decode_signature_with_target (module, mono_method_signature (target), p, &p);
780 res = sig && mono_metadata_signature_equal (mono_method_signature (target), sig);
786 /* Stores information returned by decode_method_ref () */
791 gboolean no_aot_trampoline;
795 * decode_method_ref_with_target:
797 * Decode a method reference, storing the image/token into a MethodRef structure.
798 * This avoids loading metadata for the method if the caller does not need it. If the method has
799 * no token, then it is loaded from metadata and ref->method is set to the method instance.
800 * If TARGET is non-NULL, abort decoding if it can be determined that the decoded method
801 * couldn't resolve to TARGET, and return FALSE.
802 * There are some kinds of method references which only support a non-null TARGET.
803 * This means that its not possible to decode this into a method, only to check
804 * that the method reference matches a given method. This is normally not a problem
805 * as these wrappers only occur in the extra_methods table, where we already have
806 * a method we want to lookup.
809 decode_method_ref_with_target (MonoAotModule *module, MethodRef *ref, MonoMethod *target, guint8 *buf, guint8 **endbuf)
811 guint32 image_index, value;
812 MonoImage *image = NULL;
815 memset (ref, 0, sizeof (MethodRef));
817 value = decode_value (p, &p);
818 image_index = value >> 24;
820 if (image_index == MONO_AOT_METHODREF_NO_AOT_TRAMPOLINE) {
821 ref->no_aot_trampoline = TRUE;
822 value = decode_value (p, &p);
823 image_index = value >> 24;
826 if (image_index < MONO_AOT_METHODREF_MIN || image_index == MONO_AOT_METHODREF_METHODSPEC || image_index == MONO_AOT_METHODREF_GINST) {
827 if (target && target->wrapper_type)
831 if (image_index == MONO_AOT_METHODREF_WRAPPER) {
833 guint32 wrapper_type;
835 wrapper_type = decode_value (p, &p);
837 if (target && target->wrapper_type != wrapper_type)
841 image = mono_defaults.corlib;
843 switch (wrapper_type) {
844 #ifndef DISABLE_REMOTING
845 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK: {
846 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
850 mono_class_init (m->klass);
854 ref->method = mono_marshal_get_remoting_invoke_with_check (m);
857 case MONO_WRAPPER_PROXY_ISINST: {
858 MonoClass *klass = decode_klass_ref (module, p, &p);
861 ref->method = mono_marshal_get_proxy_cancast (klass);
864 case MONO_WRAPPER_LDFLD:
865 case MONO_WRAPPER_LDFLDA:
866 case MONO_WRAPPER_STFLD:
867 case MONO_WRAPPER_ISINST: {
868 MonoClass *klass = decode_klass_ref (module, p, &p);
871 if (wrapper_type == MONO_WRAPPER_LDFLD)
872 ref->method = mono_marshal_get_ldfld_wrapper (&klass->byval_arg);
873 else if (wrapper_type == MONO_WRAPPER_LDFLDA)
874 ref->method = mono_marshal_get_ldflda_wrapper (&klass->byval_arg);
875 else if (wrapper_type == MONO_WRAPPER_STFLD)
876 ref->method = mono_marshal_get_stfld_wrapper (&klass->byval_arg);
877 else if (wrapper_type == MONO_WRAPPER_ISINST)
878 ref->method = mono_marshal_get_isinst (klass);
880 g_assert_not_reached ();
883 case MONO_WRAPPER_LDFLD_REMOTE:
884 ref->method = mono_marshal_get_ldfld_remote_wrapper (NULL);
886 case MONO_WRAPPER_STFLD_REMOTE:
887 ref->method = mono_marshal_get_stfld_remote_wrapper (NULL);
890 case MONO_WRAPPER_ALLOC: {
891 int atype = decode_value (p, &p);
893 ref->method = mono_gc_get_managed_allocator_by_type (atype, !!(mono_profiler_get_events () & MONO_PROFILE_ALLOCATIONS));
895 g_error ("Error: No managed allocator, but we need one for AOT.\nAre you using non-standard GC options?\n");
898 case MONO_WRAPPER_WRITE_BARRIER: {
899 ref->method = mono_gc_get_write_barrier ();
902 case MONO_WRAPPER_STELEMREF: {
903 int subtype = decode_value (p, &p);
905 if (subtype == WRAPPER_SUBTYPE_NONE) {
906 ref->method = mono_marshal_get_stelemref ();
907 } else if (subtype == WRAPPER_SUBTYPE_VIRTUAL_STELEMREF) {
910 kind = decode_value (p, &p);
912 /* Can't decode this */
915 if (target->wrapper_type == MONO_WRAPPER_STELEMREF) {
916 info = mono_marshal_get_wrapper_info (target);
919 if (info->subtype == subtype && info->d.virtual_stelemref.kind == kind)
920 ref->method = target;
927 g_assert_not_reached ();
931 case MONO_WRAPPER_SYNCHRONIZED: {
932 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
936 ref->method = mono_marshal_get_synchronized_wrapper (m);
939 case MONO_WRAPPER_UNKNOWN: {
940 int subtype = decode_value (p, &p);
942 if (subtype == WRAPPER_SUBTYPE_PTR_TO_STRUCTURE || subtype == WRAPPER_SUBTYPE_STRUCTURE_TO_PTR) {
943 MonoClass *klass = decode_klass_ref (module, p, &p);
950 if (klass != target->klass)
953 if (subtype == WRAPPER_SUBTYPE_PTR_TO_STRUCTURE) {
954 if (strcmp (target->name, "PtrToStructure"))
956 ref->method = mono_marshal_get_ptr_to_struct (klass);
958 if (strcmp (target->name, "StructureToPtr"))
960 ref->method = mono_marshal_get_struct_to_ptr (klass);
962 } else if (subtype == WRAPPER_SUBTYPE_SYNCHRONIZED_INNER) {
963 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
967 ref->method = mono_marshal_get_synchronized_inner_wrapper (m);
968 } else if (subtype == WRAPPER_SUBTYPE_ARRAY_ACCESSOR) {
969 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
973 ref->method = mono_marshal_get_array_accessor_wrapper (m);
974 } else if (subtype == WRAPPER_SUBTYPE_GSHAREDVT_IN) {
975 ref->method = mono_marshal_get_gsharedvt_in_wrapper ();
976 } else if (subtype == WRAPPER_SUBTYPE_GSHAREDVT_OUT) {
977 ref->method = mono_marshal_get_gsharedvt_out_wrapper ();
979 g_assert_not_reached ();
983 case MONO_WRAPPER_MANAGED_TO_MANAGED: {
984 int subtype = decode_value (p, &p);
986 if (subtype == WRAPPER_SUBTYPE_ELEMENT_ADDR) {
987 int rank = decode_value (p, &p);
988 int elem_size = decode_value (p, &p);
990 ref->method = mono_marshal_get_array_address (rank, elem_size);
991 } else if (subtype == WRAPPER_SUBTYPE_STRING_CTOR) {
994 m = decode_resolve_method_ref (module, p, &p);
1000 g_assert (target->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED);
1002 info = mono_marshal_get_wrapper_info (target);
1003 if (info && info->subtype == subtype && info->d.string_ctor.method == m)
1004 ref->method = target;
1010 case MONO_WRAPPER_MANAGED_TO_NATIVE: {
1012 int subtype = decode_value (p, &p);
1015 if (subtype == WRAPPER_SUBTYPE_ICALL_WRAPPER) {
1020 if (strcmp (target->name, name) != 0)
1022 ref->method = target;
1024 m = decode_resolve_method_ref (module, p, &p);
1029 /* This should only happen when looking for an extra method */
1032 if (mono_marshal_method_from_wrapper (target) == m)
1033 ref->method = target;
1039 case MONO_WRAPPER_CASTCLASS: {
1040 int subtype = decode_value (p, &p);
1042 if (subtype == WRAPPER_SUBTYPE_CASTCLASS_WITH_CACHE)
1043 ref->method = mono_marshal_get_castclass_with_cache ();
1044 else if (subtype == WRAPPER_SUBTYPE_ISINST_WITH_CACHE)
1045 ref->method = mono_marshal_get_isinst_with_cache ();
1047 g_assert_not_reached ();
1050 case MONO_WRAPPER_RUNTIME_INVOKE: {
1051 int subtype = decode_value (p, &p);
1052 int pass_rgctx = decode_value (p, &p);
1057 if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_DYNAMIC) {
1058 if (strcmp (target->name, "runtime_invoke_dynamic") != 0)
1060 ref->method = target;
1061 } else if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_DIRECT) {
1062 /* Direct wrapper */
1063 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
1067 ref->method = mono_marshal_get_runtime_invoke (m, FALSE, pass_rgctx);
1068 } else if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_VIRTUAL) {
1069 /* Virtual direct wrapper */
1070 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
1074 ref->method = mono_marshal_get_runtime_invoke (m, TRUE, pass_rgctx);
1076 MonoMethodSignature *sig;
1078 sig = decode_signature_with_target (module, NULL, p, &p);
1079 info = mono_marshal_get_wrapper_info (target);
1082 if (info->subtype != subtype)
1084 if (info->d.runtime_invoke.pass_rgctx != pass_rgctx)
1086 g_assert (info->d.runtime_invoke.sig);
1087 if (mono_metadata_signature_equal (sig, info->d.runtime_invoke.sig))
1088 ref->method = target;
1094 case MONO_WRAPPER_DELEGATE_INVOKE:
1095 case MONO_WRAPPER_DELEGATE_BEGIN_INVOKE:
1096 case MONO_WRAPPER_DELEGATE_END_INVOKE: {
1097 gboolean is_inflated = decode_value (p, &p);
1098 WrapperSubtype subtype;
1102 MonoMethod *invoke, *wrapper;
1104 klass = decode_klass_ref (module, p, &p);
1108 switch (wrapper_type) {
1109 case MONO_WRAPPER_DELEGATE_INVOKE:
1110 invoke = mono_get_delegate_invoke (klass);
1111 wrapper = mono_marshal_get_delegate_invoke (invoke, NULL);
1113 case MONO_WRAPPER_DELEGATE_BEGIN_INVOKE:
1114 invoke = mono_get_delegate_begin_invoke (klass);
1115 wrapper = mono_marshal_get_delegate_begin_invoke (invoke);
1117 case MONO_WRAPPER_DELEGATE_END_INVOKE:
1118 invoke = mono_get_delegate_end_invoke (klass);
1119 wrapper = mono_marshal_get_delegate_end_invoke (invoke);
1122 g_assert_not_reached ();
1127 * Due to the way mini_get_shared_method () works, we could end up with
1128 * multiple copies of the same wrapper.
1130 if (wrapper->klass != target->klass)
1132 ref->method = target;
1134 ref->method = wrapper;
1138 * These wrappers are associated with a signature, not with a method.
1139 * Since we can't decode them into methods, they need a target method.
1144 if (wrapper_type == MONO_WRAPPER_DELEGATE_INVOKE) {
1145 subtype = decode_value (p, &p);
1146 info = mono_marshal_get_wrapper_info (target);
1148 if (info->subtype != subtype)
1151 if (subtype != WRAPPER_SUBTYPE_NONE)
1155 if (sig_matches_target (module, target, p, &p))
1156 ref->method = target;
1162 case MONO_WRAPPER_NATIVE_TO_MANAGED: {
1166 m = decode_resolve_method_ref (module, p, &p);
1169 klass = decode_klass_ref (module, p, &p);
1172 ref->method = mono_marshal_get_managed_wrapper (m, klass, 0);
1176 g_assert_not_reached ();
1178 } else if (image_index == MONO_AOT_METHODREF_METHODSPEC) {
1179 image_index = decode_value (p, &p);
1180 ref->token = decode_value (p, &p);
1182 image = load_image (module, image_index, TRUE);
1185 } else if (image_index == MONO_AOT_METHODREF_GINST) {
1188 MonoGenericContext ctx;
1191 * These methods do not have a token which resolves them, so we
1192 * resolve them immediately.
1194 klass = decode_klass_ref (module, p, &p);
1198 if (target && target->klass != klass)
1201 image_index = decode_value (p, &p);
1202 ref->token = decode_value (p, &p);
1204 image = load_image (module, image_index, TRUE);
1208 ref->method = mono_get_method_full (image, ref->token, NULL, NULL);
1212 memset (&ctx, 0, sizeof (ctx));
1214 if (FALSE && klass->generic_class) {
1215 ctx.class_inst = klass->generic_class->context.class_inst;
1216 ctx.method_inst = NULL;
1218 ref->method = mono_class_inflate_generic_method_full_checked (ref->method, klass, &ctx, &error);
1219 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
1222 memset (&ctx, 0, sizeof (ctx));
1224 if (!decode_generic_context (module, &ctx, p, &p))
1227 ref->method = mono_class_inflate_generic_method_full_checked (ref->method, klass, &ctx, &error);
1228 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
1229 } else if (image_index == MONO_AOT_METHODREF_ARRAY) {
1233 klass = decode_klass_ref (module, p, &p);
1236 method_type = decode_value (p, &p);
1237 switch (method_type) {
1239 ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank);
1242 ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank * 2);
1245 ref->method = mono_class_get_method_from_name (klass, "Get", -1);
1248 ref->method = mono_class_get_method_from_name (klass, "Address", -1);
1251 ref->method = mono_class_get_method_from_name (klass, "Set", -1);
1254 g_assert_not_reached ();
1257 if (image_index == MONO_AOT_METHODREF_LARGE_IMAGE_INDEX) {
1258 image_index = decode_value (p, &p);
1259 value = decode_value (p, &p);
1262 ref->token = MONO_TOKEN_METHOD_DEF | (value & 0xffffff);
1264 image = load_image (module, image_index, TRUE);
1277 decode_method_ref (MonoAotModule *module, MethodRef *ref, guint8 *buf, guint8 **endbuf)
1279 return decode_method_ref_with_target (module, ref, NULL, buf, endbuf);
1283 * decode_resolve_method_ref_with_target:
1285 * Similar to decode_method_ref, but resolve and return the method itself.
1288 decode_resolve_method_ref_with_target (MonoAotModule *module, MonoMethod *target, guint8 *buf, guint8 **endbuf)
1293 res = decode_method_ref_with_target (module, &ref, target, buf, endbuf);
1300 return mono_get_method (ref.image, ref.token, NULL);
1304 decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
1306 return decode_resolve_method_ref_with_target (module, NULL, buf, endbuf);
1309 #ifdef ENABLE_AOT_CACHE
1315 * - Add options for controlling the cache size
1316 * - Handle full cache by deleting old assemblies lru style
1317 * - Maybe add a threshold after an assembly is AOT compiled
1318 * - Add options for enabling this for specific main assemblies
1321 /* The cache directory */
1322 static char *cache_dir;
1324 /* The number of assemblies AOTed in this run */
1325 static int cache_count;
1327 /* Whenever to AOT in-process */
1328 static gboolean in_process;
1331 collect_assemblies (gpointer data, gpointer user_data)
1333 MonoAssembly *ass = data;
1334 GSList **l = user_data;
1336 *l = g_slist_prepend (*l, ass);
1339 #define SHA1_DIGEST_LENGTH 20
1342 * get_aot_config_hash:
1344 * Return a hash for all the version information an AOT module depends on.
1346 static G_GNUC_UNUSED char*
1347 get_aot_config_hash (MonoAssembly *assembly)
1350 GSList *l, *assembly_list = NULL;
1353 guint8 digest [SHA1_DIGEST_LENGTH];
1356 build_info = mono_get_runtime_build_info ();
1358 s = g_string_new (build_info);
1360 mono_assembly_foreach (collect_assemblies, &assembly_list);
1363 * The assembly list includes the current assembly as well, no need
1366 for (l = assembly_list; l; l = l->next) {
1367 MonoAssembly *ass = l->data;
1369 g_string_append (s, "_");
1370 g_string_append (s, ass->aname.name);
1371 g_string_append (s, "_");
1372 g_string_append (s, ass->image->guid);
1375 for (i = 0; i < s->len; ++i) {
1376 if (!isalnum (s->str [i]) && s->str [i] != '-')
1380 mono_sha1_get_digest ((guint8*)s->str, s->len, digest);
1382 digest_str = g_malloc0 ((SHA1_DIGEST_LENGTH * 2) + 1);
1383 for (i = 0; i < SHA1_DIGEST_LENGTH; ++i)
1384 sprintf (digest_str + (i * 2), "%02x", digest [i]);
1386 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: file dependencies: %s, hash %s", s->str, digest_str);
1388 g_string_free (s, TRUE);
1394 aot_cache_init (void)
1398 enable_aot_cache = TRUE;
1403 * aot_cache_load_module:
1405 * Load the AOT image corresponding to ASSEMBLY from the aot cache, AOTing it if neccessary.
1408 aot_cache_load_module (MonoAssembly *assembly, char **aot_name)
1410 MonoAotCacheConfig *config;
1412 char *fname, *tmp2, *aot_options, *failure_fname;
1424 if (image_is_dynamic (assembly->image))
1427 /* Check in the list of assemblies enabled for aot caching */
1428 config = mono_get_aot_cache_config ();
1432 MonoDomain *domain = mono_domain_get ();
1433 MonoAssembly *entry_assembly = domain->entry_assembly;
1435 // FIXME: This cannot be used for mscorlib during startup, since entry_assembly is not set yet
1436 for (l = config->apps; l; l = l->next) {
1439 if ((entry_assembly && !strcmp (entry_assembly->aname.name, n)) || (!entry_assembly && !strcmp (assembly->aname.name, n)))
1447 for (l = config->assemblies; l; l = l->next) {
1450 if (!strcmp (assembly->aname.name, n))
1460 home = g_get_home_dir ();
1463 cache_dir = g_strdup_printf ("%s/Library/Caches/mono/aot-cache", home);
1464 if (!g_file_test (cache_dir, G_FILE_TEST_EXISTS|G_FILE_TEST_IS_DIR))
1465 g_mkdir_with_parents (cache_dir, 0777);
1469 * The same assembly can be used in multiple configurations, i.e. multiple
1470 * versions of the runtime, with multiple versions of dependent assemblies etc.
1471 * To handle this, we compute a version string containing all this information, hash it,
1472 * and use the hash as a filename suffix.
1474 hash = get_aot_config_hash (assembly);
1476 tmp2 = g_strdup_printf ("%s-%s%s", assembly->image->assembly_name, hash, MONO_SOLIB_EXT);
1477 fname = g_build_filename (cache_dir, tmp2, NULL);
1481 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: loading from cache: '%s'.", fname);
1482 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
1485 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: found in cache: '%s'.", fname);
1489 if (!strcmp (assembly->aname.name, "mscorlib") && !mscorlib_aot_loaded)
1491 * Can't AOT this during startup, so we AOT it when called later from
1492 * mono_aot_get_method ().
1496 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: not found.");
1498 /* Only AOT one assembly per run to avoid slowing down execution too much */
1499 if (cache_count > 0)
1503 /* Check for previous failure */
1504 failure_fname = g_strdup_printf ("%s.failure", fname);
1505 failure_file = fopen (failure_fname, "r");
1507 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: assembly '%s' previously failed to compile '%s' ('%s')... ", assembly->image->name, fname, failure_fname);
1508 g_free (failure_fname);
1511 g_free (failure_fname);
1512 fclose (failure_file);
1515 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: compiling assembly '%s', logfile: '%s.log'... ", assembly->image->name, fname);
1518 * We need to invoke the AOT compiler here. There are multiple approaches:
1519 * - spawn a new runtime process. This can be hard when running with mkbundle, and
1520 * its hard to make the new process load the same set of assemblies.
1521 * - doing it in-process. This exposes the current process to bugs/leaks/side effects of
1523 * - fork a new process and do the work there.
1526 aot_options = g_strdup_printf ("outfile=%s,internal-logfile=%s.log%s%s", fname, fname, config->aot_options ? "," : "", config->aot_options ? config->aot_options : "");
1527 /* Maybe due this in another thread ? */
1528 res = mono_compile_assembly (assembly, mono_parse_default_optimizations (NULL), aot_options);
1530 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: compilation failed.");
1531 failure_fname = g_strdup_printf ("%s.failure", fname);
1532 failure_file = fopen (failure_fname, "a+");
1533 fclose (failure_file);
1534 g_free (failure_fname);
1536 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: compilation succeeded.");
1540 * - Avoid waiting for the aot process to finish ?
1541 * (less overhead, but multiple processes could aot the same assembly at the same time)
1550 logfile_name = g_strdup_printf ("%s/aot.log", cache_dir);
1551 logfile = fopen (logfile_name, "a+");
1552 g_free (logfile_name);
1554 dup2 (fileno (logfile), 1);
1555 dup2 (fileno (logfile), 2);
1557 aot_options = g_strdup_printf ("outfile=%s", fname);
1558 res = mono_compile_assembly (assembly, mono_parse_default_optimizations (NULL), aot_options);
1566 waitpid (pid, &exit_status, 0);
1567 if (!WIFEXITED (exit_status) && (WEXITSTATUS (exit_status) == 0))
1568 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: failed.");
1570 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: succeeded.");
1574 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
1582 aot_cache_init (void)
1587 aot_cache_load_module (MonoAssembly *assembly, char **aot_name)
1595 find_symbol (MonoDl *module, gpointer *globals, const char *name, gpointer *value)
1599 guint16 *table, *entry;
1602 char *symbol = (char*)name;
1605 symbol = g_strdup_printf ("_%s", name);
1608 /* The first entry points to the hash */
1609 table = globals [0];
1612 table_size = table [0];
1615 hash = mono_metadata_str_hash (symbol) % table_size;
1617 entry = &table [hash * 2];
1619 /* Search the hash for the index into the globals table */
1621 while (entry [0] != 0) {
1622 guint32 index = entry [0] - 1;
1623 guint32 next = entry [1];
1625 //printf ("X: %s %s\n", (char*)globals [index * 2], name);
1627 if (!strcmp (globals [index * 2], symbol)) {
1628 global_index = index;
1633 entry = &table [next * 2];
1639 if (global_index != -1)
1640 *value = globals [global_index * 2 + 1];
1647 char *err = mono_dl_symbol (module, name, value);
1655 check_usable (MonoAssembly *assembly, MonoAotFileInfo *info, char **out_msg)
1659 gboolean usable = TRUE;
1660 gboolean full_aot, safepoints;
1662 guint32 excluded_cpu_optimizations;
1664 if (strcmp (assembly->image->guid, info->assembly_guid)) {
1665 msg = g_strdup_printf ("doesn't match assembly");
1669 build_info = mono_get_runtime_build_info ();
1670 if (strlen (info->runtime_version) > 0 && strcmp (info->runtime_version, build_info)) {
1671 msg = g_strdup_printf ("compiled against runtime version '%s' while this runtime has version '%s'", info->runtime_version, build_info);
1674 g_free (build_info);
1676 full_aot = info->flags & MONO_AOT_FILE_FLAG_FULL_AOT;
1678 if (mono_aot_only && !full_aot) {
1679 msg = g_strdup_printf ("not compiled with --aot=full");
1682 if (!mono_aot_only && full_aot) {
1683 msg = g_strdup_printf ("compiled with --aot=full");
1686 if (mono_llvm_only && !(info->flags & MONO_AOT_FILE_FLAG_LLVM_ONLY)) {
1687 msg = g_strdup_printf ("not compiled with --aot=llvmonly");
1691 /* mono_arch_find_imt_method () requires this */
1692 if ((info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM) && !mono_use_llvm) {
1693 msg = g_strdup_printf ("compiled against LLVM");
1696 if (!(info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM) && mono_use_llvm) {
1697 msg = g_strdup_printf ("not compiled against LLVM");
1701 if (mini_get_debug_options ()->mdb_optimizations && !(info->flags & MONO_AOT_FILE_FLAG_DEBUG) && !full_aot) {
1702 msg = g_strdup_printf ("not compiled for debugging");
1706 mono_arch_cpu_optimizations (&excluded_cpu_optimizations);
1707 if (info->opts & excluded_cpu_optimizations) {
1708 msg = g_strdup_printf ("compiled with unsupported CPU optimizations");
1712 if (!mono_aot_only && (info->simd_opts & ~mono_arch_cpu_enumerate_simd_versions ())) {
1713 msg = g_strdup_printf ("compiled with unsupported SIMD extensions");
1719 if (info->gc_name_index != -1) {
1720 char *gc_name = (char*)&blob [info->gc_name_index];
1721 const char *current_gc_name = mono_gc_get_gc_name ();
1723 if (strcmp (current_gc_name, gc_name) != 0) {
1724 msg = g_strdup_printf ("compiled against GC %s, while the current runtime uses GC %s.\n", gc_name, current_gc_name);
1729 safepoints = info->flags & MONO_AOT_FILE_FLAG_SAFEPOINTS;
1731 if (!safepoints && mono_threads_is_coop_enabled ()) {
1732 msg = g_strdup_printf ("not compiled with safepoints");
1741 * TABLE should point to a table of call instructions. Return the address called by the INDEXth entry.
1744 get_call_table_entry (void *table, int index)
1746 #if defined(TARGET_ARM)
1751 ins_addr = (guint32*)table + index;
1753 if ((ins >> ARMCOND_SHIFT) == ARMCOND_NV) {
1755 offset = (((int)(((ins & 0xffffff) << 1) | ((ins >> 24) & 0x1))) << 7) >> 7;
1756 return (char*)ins_addr + (offset * 2) + 8 + 1;
1758 offset = (((int)ins & 0xffffff) << 8) >> 8;
1759 return (char*)ins_addr + (offset * 4) + 8;
1761 #elif defined(TARGET_ARM64)
1762 return mono_arch_get_call_target ((guint8*)table + (index * 4) + 4);
1763 #elif defined(TARGET_X86) || defined(TARGET_AMD64)
1764 /* The callee expects an ip which points after the call */
1765 return mono_arch_get_call_target ((guint8*)table + (index * 5) + 5);
1767 g_assert_not_reached ();
1775 * Initialize the shared got entries for AMODULE.
1778 init_amodule_got (MonoAotModule *amodule)
1782 MonoJumpInfo *patches;
1783 guint32 got_offsets [128];
1786 /* These can't be initialized in load_aot_module () */
1787 if (amodule->shared_got [0] || amodule->got_initializing)
1790 amodule->got_initializing = TRUE;
1792 mp = mono_mempool_new ();
1793 npatches = amodule->info.nshared_got_entries;
1794 for (i = 0; i < npatches; ++i)
1795 got_offsets [i] = i;
1796 patches = decode_patches (amodule, mp, npatches, FALSE, got_offsets);
1798 for (i = 0; i < npatches; ++i) {
1801 if (ji->type == MONO_PATCH_INFO_GC_CARD_TABLE_ADDR && !mono_gc_is_moving ()) {
1802 amodule->shared_got [i] = NULL;
1803 } else if (ji->type == MONO_PATCH_INFO_GC_NURSERY_START && !mono_gc_is_moving ()) {
1804 amodule->shared_got [i] = NULL;
1805 } else if (ji->type == MONO_PATCH_INFO_GC_NURSERY_BITS && !mono_gc_is_moving ()) {
1806 amodule->shared_got [i] = NULL;
1807 } else if (ji->type == MONO_PATCH_INFO_IMAGE) {
1808 amodule->shared_got [i] = amodule->assembly->image;
1809 } else if (ji->type == MONO_PATCH_INFO_MSCORLIB_GOT_ADDR) {
1810 if (mono_defaults.corlib) {
1811 MonoAotModule *mscorlib_amodule = mono_defaults.corlib->aot_module;
1813 if (mscorlib_amodule)
1814 amodule->shared_got [i] = mscorlib_amodule->got;
1816 amodule->shared_got [i] = amodule->got;
1818 } else if (ji->type == MONO_PATCH_INFO_AOT_MODULE) {
1819 amodule->shared_got [i] = amodule;
1821 amodule->shared_got [i] = mono_resolve_patch_target (NULL, mono_get_root_domain (), NULL, ji, FALSE);
1826 for (i = 0; i < npatches; ++i)
1827 amodule->got [i] = amodule->shared_got [i];
1829 if (amodule->llvm_got) {
1830 for (i = 0; i < npatches; ++i)
1831 amodule->llvm_got [i] = amodule->shared_got [i];
1834 mono_mempool_destroy (mp);
1838 load_aot_module (MonoAssembly *assembly, gpointer user_data)
1841 MonoAotModule *amodule;
1843 gboolean usable = TRUE;
1844 char *version_symbol = NULL;
1846 gpointer *globals = NULL;
1847 MonoAotFileInfo *info = NULL;
1850 gboolean do_load_image = TRUE;
1851 int align_double, align_int64;
1853 if (mono_compile_aot)
1856 if (assembly->image->aot_module)
1858 * Already loaded. This can happen because the assembly loading code might invoke
1859 * the assembly load hooks multiple times for the same assembly.
1863 if (image_is_dynamic (assembly->image) || assembly->ref_only)
1867 if (static_aot_modules)
1868 info = g_hash_table_lookup (static_aot_modules, assembly->aname.name);
1876 /* Statically linked AOT module */
1877 aot_name = g_strdup_printf ("%s", assembly->aname.name);
1878 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "Found statically linked AOT module '%s'.\n", aot_name);
1879 globals = info->globals;
1881 if (enable_aot_cache)
1882 sofile = aot_cache_load_module (assembly, &aot_name);
1885 aot_name = g_strdup_printf ("%s%s", assembly->image->name, MONO_SOLIB_EXT);
1887 sofile = mono_dl_open (aot_name, MONO_DL_LAZY, &err);
1890 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module '%s' not found: %s\n", aot_name, err);
1893 aot_name = g_strdup_printf ("%s/mono/aot-cache/%s/%s%s", mono_assembly_getrootdir(), MONO_ARCHITECTURE, g_path_get_basename (assembly->image->name), MONO_SOLIB_EXT);
1894 sofile = mono_dl_open (aot_name, MONO_DL_LAZY, &err);
1896 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module '%s' not found: %s\n", aot_name, err);
1904 if (!sofile && !globals) {
1905 if (mono_aot_only && assembly->image->tables [MONO_TABLE_METHOD].rows)
1906 g_error ("Failed to load AOT module '%s' in aot-only mode.\n", aot_name);
1912 find_symbol (sofile, globals, "mono_aot_version", (gpointer *) &version_symbol);
1913 find_symbol (sofile, globals, "mono_aot_file_info", (gpointer*)&info);
1916 if (version_symbol) {
1917 /* Old file format */
1918 version = atoi (version_symbol);
1921 version = info->version;
1924 if (version != MONO_AOT_FILE_VERSION) {
1925 msg = g_strdup_printf ("wrong file format version (expected %d got %d)", MONO_AOT_FILE_VERSION, version);
1928 usable = check_usable (assembly, info, &msg);
1932 if (mono_aot_only) {
1933 g_error ("Failed to load AOT module '%s' while running in aot-only mode: %s.\n", aot_name, msg);
1935 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: module %s is unusable: %s.\n", aot_name, msg);
1940 mono_dl_close (sofile);
1941 assembly->image->aot_module = NULL;
1946 align_double = MONO_ABI_ALIGNOF (double);
1947 align_int64 = MONO_ABI_ALIGNOF (gint64);
1948 g_assert (info->double_align == align_double);
1949 g_assert (info->long_align == align_int64);
1950 g_assert (info->generic_tramp_num == MONO_TRAMPOLINE_NUM);
1954 amodule = g_new0 (MonoAotModule, 1);
1955 amodule->aot_name = aot_name;
1956 amodule->assembly = assembly;
1958 memcpy (&amodule->info, info, sizeof (*info));
1960 amodule->got = amodule->info.jit_got;
1961 amodule->llvm_got = amodule->info.llvm_got;
1962 amodule->globals = globals;
1963 amodule->sofile = sofile;
1964 amodule->method_to_code = g_hash_table_new (mono_aligned_addr_hash, NULL);
1965 amodule->extra_methods = g_hash_table_new (NULL, NULL);
1966 amodule->blob = blob;
1967 amodule->shared_got = g_new0 (gpointer, info->nshared_got_entries);
1969 mono_os_mutex_init_recursive (&amodule->mutex);
1971 /* Read image table */
1973 guint32 table_len, i;
1976 table = info->image_table;
1979 table_len = *(guint32*)table;
1980 table += sizeof (guint32);
1981 amodule->image_table = g_new0 (MonoImage*, table_len);
1982 amodule->image_names = g_new0 (MonoAssemblyName, table_len);
1983 amodule->image_guids = g_new0 (char*, table_len);
1984 amodule->image_table_len = table_len;
1985 for (i = 0; i < table_len; ++i) {
1986 MonoAssemblyName *aname = &(amodule->image_names [i]);
1988 aname->name = g_strdup (table);
1989 table += strlen (table) + 1;
1990 amodule->image_guids [i] = g_strdup (table);
1991 table += strlen (table) + 1;
1993 aname->culture = g_strdup (table);
1994 table += strlen (table) + 1;
1995 memcpy (aname->public_key_token, table, strlen (table) + 1);
1996 table += strlen (table) + 1;
1998 table = ALIGN_PTR_TO (table, 8);
1999 aname->flags = *(guint32*)table;
2001 aname->major = *(guint32*)table;
2003 aname->minor = *(guint32*)table;
2005 aname->build = *(guint32*)table;
2007 aname->revision = *(guint32*)table;
2012 amodule->jit_code_start = info->jit_code_start;
2013 amodule->jit_code_end = info->jit_code_end;
2014 amodule->method_info_offsets = info->method_info_offsets;
2015 amodule->ex_info_offsets = info->ex_info_offsets;
2016 amodule->class_info_offsets = info->class_info_offsets;
2017 amodule->class_name_table = info->class_name_table;
2018 amodule->extra_method_table = info->extra_method_table;
2019 amodule->extra_method_info_offsets = info->extra_method_info_offsets;
2020 amodule->unbox_trampolines = info->unbox_trampolines;
2021 amodule->unbox_trampolines_end = info->unbox_trampolines_end;
2022 amodule->unbox_trampoline_addresses = info->unbox_trampoline_addresses;
2023 amodule->unwind_info = info->unwind_info;
2024 amodule->mem_begin = amodule->jit_code_start;
2025 amodule->mem_end = info->mem_end;
2026 amodule->plt = info->plt;
2027 amodule->plt_end = info->plt_end;
2028 amodule->mono_eh_frame = info->mono_eh_frame;
2029 amodule->trampolines [MONO_AOT_TRAMP_SPECIFIC] = info->specific_trampolines;
2030 amodule->trampolines [MONO_AOT_TRAMP_STATIC_RGCTX] = info->static_rgctx_trampolines;
2031 amodule->trampolines [MONO_AOT_TRAMP_IMT_THUNK] = info->imt_thunks;
2032 amodule->trampolines [MONO_AOT_TRAMP_GSHAREDVT_ARG] = info->gsharedvt_arg_trampolines;
2034 if (!strcmp (assembly->aname.name, "mscorlib"))
2035 mscorlib_aot_module = amodule;
2037 /* Compute method addresses */
2038 amodule->methods = g_malloc0 (amodule->info.nmethods * sizeof (gpointer));
2039 for (i = 0; i < amodule->info.nmethods; ++i) {
2042 if (amodule->info.llvm_get_method) {
2043 gpointer (*get_method) (int) = amodule->info.llvm_get_method;
2045 addr = get_method (i);
2048 /* method_addresses () contains a table of branches, since the ios linker can update those correctly */
2049 if (!addr && amodule->info.method_addresses) {
2050 addr = get_call_table_entry (amodule->info.method_addresses, i);
2052 if (addr == amodule->info.method_addresses)
2056 amodule->methods [i] = GINT_TO_POINTER (-1);
2058 amodule->methods [i] = addr;
2061 if (make_unreadable) {
2062 #ifndef TARGET_WIN32
2064 guint8 *page_start, *page_end;
2067 addr = amodule->mem_begin;
2069 len = amodule->mem_end - amodule->mem_begin;
2071 /* Round down in both directions to avoid modifying data which is not ours */
2072 page_start = (guint8 *) (((gssize) (addr)) & ~ (mono_pagesize () - 1)) + mono_pagesize ();
2073 page_end = (guint8 *) (((gssize) (addr + len)) & ~ (mono_pagesize () - 1));
2074 if (page_end > page_start) {
2075 err = mono_mprotect (page_start, (page_end - page_start), MONO_MMAP_NONE);
2076 g_assert (err == 0);
2081 /* Compute the boundaries of LLVM code */
2082 if (info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM)
2083 compute_llvm_code_range (amodule, &amodule->llvm_code_start, &amodule->llvm_code_end);
2087 if (amodule->jit_code_start) {
2088 aot_code_low_addr = MIN (aot_code_low_addr, (gsize)amodule->jit_code_start);
2089 aot_code_high_addr = MAX (aot_code_high_addr, (gsize)amodule->jit_code_end);
2091 if (amodule->llvm_code_start) {
2092 aot_code_low_addr = MIN (aot_code_low_addr, (gsize)amodule->llvm_code_start);
2093 aot_code_high_addr = MAX (aot_code_high_addr, (gsize)amodule->llvm_code_end);
2096 g_hash_table_insert (aot_modules, assembly, amodule);
2099 if (amodule->jit_code_start)
2100 mono_jit_info_add_aot_module (assembly->image, amodule->jit_code_start, amodule->jit_code_end);
2101 if (amodule->llvm_code_start)
2102 mono_jit_info_add_aot_module (assembly->image, amodule->llvm_code_start, amodule->llvm_code_end);
2104 assembly->image->aot_module = amodule;
2106 if (mono_aot_only) {
2108 find_symbol (amodule->sofile, amodule->globals, "specific_trampolines_page", (gpointer *)&code);
2109 amodule->use_page_trampolines = code != NULL;
2110 /*g_warning ("using page trampolines: %d", amodule->use_page_trampolines);*/
2114 * Register the plt region as a single trampoline so we can unwind from this code
2116 mono_tramp_info_register (
2117 mono_tramp_info_create (
2120 amodule->plt_end - amodule->plt,
2122 mono_unwind_get_cie_program ()
2128 * Since we store methoddef and classdef tokens when referring to methods/classes in
2129 * referenced assemblies, we depend on the exact versions of the referenced assemblies.
2130 * MS calls this 'hard binding'. This means we have to load all referenced assemblies
2131 * non-lazily, since we can't handle out-of-date errors later.
2132 * The cached class info also depends on the exact assemblies.
2134 #if defined(__native_client__)
2135 /* TODO: Don't 'load_image' on mscorlib due to a */
2136 /* recursive loading problem. This should be */
2137 /* removed if mscorlib is loaded from disk. */
2138 if (strncmp(assembly->aname.name, "mscorlib", 8)) {
2139 do_load_image = TRUE;
2141 do_load_image = FALSE;
2144 if (do_load_image) {
2145 for (i = 0; i < amodule->image_table_len; ++i)
2146 load_image (amodule, i, FALSE);
2149 if (amodule->out_of_date) {
2150 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);
2152 g_error ("Failed to load AOT module '%s' while running in aot-only mode because a dependency cannot be found or it is out of date.\n", aot_name);
2155 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: loaded AOT Module for %s.\n", assembly->image->name);
2159 * mono_aot_register_module:
2161 * This should be called by embedding code to register AOT modules statically linked
2162 * into the executable. AOT_INFO should be the value of the
2163 * 'mono_aot_module_<ASSEMBLY_NAME>_info' global symbol from the AOT module.
2166 mono_aot_register_module (gpointer *aot_info)
2170 MonoAotFileInfo *info = (gpointer)aot_info;
2172 g_assert (info->version == MONO_AOT_FILE_VERSION);
2174 globals = info->globals;
2177 aname = info->assembly_name;
2179 /* This could be called before startup */
2183 if (!static_aot_modules)
2184 static_aot_modules = g_hash_table_new (g_str_hash, g_str_equal);
2186 g_hash_table_insert (static_aot_modules, aname, info);
2193 mono_aot_init (void)
2195 mono_os_mutex_init_recursive (&aot_mutex);
2196 mono_os_mutex_init_recursive (&aot_page_mutex);
2197 aot_modules = g_hash_table_new (NULL, NULL);
2199 #ifndef __native_client__
2200 mono_install_assembly_load_hook (load_aot_module, NULL);
2202 mono_counters_register ("Async JIT info size", MONO_COUNTER_INT|MONO_COUNTER_JIT, &async_jit_info_size);
2204 if (g_getenv ("MONO_LASTAOT"))
2205 mono_last_aot_method = atoi (g_getenv ("MONO_LASTAOT"));
2210 mono_aot_cleanup (void)
2212 if (aot_jit_icall_hash)
2213 g_hash_table_destroy (aot_jit_icall_hash);
2215 g_hash_table_destroy (aot_modules);
2219 decode_cached_class_info (MonoAotModule *module, MonoCachedClassInfo *info, guint8 *buf, guint8 **endbuf)
2225 info->vtable_size = decode_value (buf, &buf);
2226 if (info->vtable_size == -1)
2229 flags = decode_value (buf, &buf);
2230 info->ghcimpl = (flags >> 0) & 0x1;
2231 info->has_finalize = (flags >> 1) & 0x1;
2232 info->has_cctor = (flags >> 2) & 0x1;
2233 info->has_nested_classes = (flags >> 3) & 0x1;
2234 info->blittable = (flags >> 4) & 0x1;
2235 info->has_references = (flags >> 5) & 0x1;
2236 info->has_static_refs = (flags >> 6) & 0x1;
2237 info->no_special_static_fields = (flags >> 7) & 0x1;
2238 info->is_generic_container = (flags >> 8) & 0x1;
2240 if (info->has_cctor) {
2241 res = decode_method_ref (module, &ref, buf, &buf);
2244 info->cctor_token = ref.token;
2246 if (info->has_finalize) {
2247 res = decode_method_ref (module, &ref, buf, &buf);
2250 info->finalize_image = ref.image;
2251 info->finalize_token = ref.token;
2254 info->instance_size = decode_value (buf, &buf);
2255 info->class_size = decode_value (buf, &buf);
2256 info->packing_size = decode_value (buf, &buf);
2257 info->min_align = decode_value (buf, &buf);
2265 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
2268 MonoClass *klass = vtable->klass;
2269 MonoAotModule *amodule = klass->image->aot_module;
2271 MonoCachedClassInfo class_info;
2276 if (MONO_CLASS_IS_INTERFACE (klass) || klass->rank || !amodule)
2279 info = &amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
2282 err = decode_cached_class_info (amodule, &class_info, p, &p);
2286 for (i = 0; i < slot; ++i)
2287 decode_method_ref (amodule, &ref, p, &p);
2289 res = decode_method_ref (amodule, &ref, p, &p);
2292 if (ref.no_aot_trampoline)
2295 if (mono_metadata_token_index (ref.token) == 0 || mono_metadata_token_table (ref.token) != MONO_TABLE_METHOD)
2298 return mono_aot_get_method_from_token (domain, ref.image, ref.token);
2302 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
2304 MonoAotModule *amodule = klass->image->aot_module;
2308 if (klass->rank || !amodule)
2311 p = (guint8*)&amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
2313 err = decode_cached_class_info (amodule, res, p, &p);
2321 * mono_aot_get_class_from_name:
2323 * Obtains a MonoClass with a given namespace and a given name which is located in IMAGE,
2324 * using a cache stored in the AOT file.
2325 * Stores the resulting class in *KLASS if found, stores NULL otherwise.
2327 * Returns: TRUE if the klass was found/not found in the cache, FALSE if no aot file was
2331 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
2333 MonoAotModule *amodule = image->aot_module;
2334 guint16 *table, *entry;
2337 char full_name_buf [1024];
2339 const char *name2, *name_space2;
2341 guint32 cols [MONO_TYPEDEF_SIZE];
2342 GHashTable *nspace_table;
2344 if (!amodule || !amodule->class_name_table)
2347 amodule_lock (amodule);
2351 /* First look in the cache */
2352 if (!amodule->name_cache)
2353 amodule->name_cache = g_hash_table_new (g_str_hash, g_str_equal);
2354 nspace_table = g_hash_table_lookup (amodule->name_cache, name_space);
2356 *klass = g_hash_table_lookup (nspace_table, name);
2358 amodule_unlock (amodule);
2363 table_size = amodule->class_name_table [0];
2364 table = amodule->class_name_table + 1;
2366 if (name_space [0] == '\0')
2367 full_name = g_strdup_printf ("%s", name);
2369 if (strlen (name_space) + strlen (name) < 1000) {
2370 sprintf (full_name_buf, "%s.%s", name_space, name);
2371 full_name = full_name_buf;
2373 full_name = g_strdup_printf ("%s.%s", name_space, name);
2376 hash = mono_metadata_str_hash (full_name) % table_size;
2377 if (full_name != full_name_buf)
2380 entry = &table [hash * 2];
2382 if (entry [0] != 0) {
2383 t = &image->tables [MONO_TABLE_TYPEDEF];
2386 guint32 index = entry [0];
2387 guint32 next = entry [1];
2388 guint32 token = mono_metadata_make_token (MONO_TABLE_TYPEDEF, index);
2390 name_table_accesses ++;
2392 mono_metadata_decode_row (t, index - 1, cols, MONO_TYPEDEF_SIZE);
2394 name2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
2395 name_space2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
2397 if (!strcmp (name, name2) && !strcmp (name_space, name_space2)) {
2399 amodule_unlock (amodule);
2400 *klass = mono_class_get_checked (image, token, &error);
2401 if (!mono_error_ok (&error))
2402 mono_error_cleanup (&error); /* FIXME don't swallow the error */
2406 amodule_lock (amodule);
2407 nspace_table = g_hash_table_lookup (amodule->name_cache, name_space);
2408 if (!nspace_table) {
2409 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
2410 g_hash_table_insert (amodule->name_cache, (char*)name_space2, nspace_table);
2412 g_hash_table_insert (nspace_table, (char*)name2, *klass);
2413 amodule_unlock (amodule);
2419 entry = &table [next * 2];
2426 amodule_unlock (amodule);
2431 /* Compute the boundaries of the LLVM code for AMODULE. */
2433 compute_llvm_code_range (MonoAotModule *amodule, guint8 **code_start, guint8 **code_end)
2436 int version, fde_count;
2439 if (amodule->info.llvm_get_method) {
2440 gpointer (*get_method) (int) = amodule->info.llvm_get_method;
2442 *code_start = get_method (-1);
2443 *code_end = get_method (-2);
2445 g_assert (*code_end > *code_start);
2449 g_assert (amodule->mono_eh_frame);
2451 p = amodule->mono_eh_frame;
2453 /* p points to data emitted by LLVM in DwarfException::EmitMonoEHFrame () */
2457 g_assert (version == 3);
2460 p = ALIGN_PTR_TO (p, 4);
2462 fde_count = *(guint32*)p;
2466 if (fde_count > 0) {
2467 *code_start = amodule->methods [table [0]];
2468 *code_end = (guint8*)amodule->methods [table [(fde_count - 1) * 2]] + table [fde_count * 2];
2476 is_llvm_code (MonoAotModule *amodule, guint8 *code)
2478 if ((guint8*)code >= amodule->llvm_code_start && (guint8*)code < amodule->llvm_code_end)
2485 is_thumb_code (MonoAotModule *amodule, guint8 *code)
2487 if (is_llvm_code (amodule, code) && (amodule->info.flags & MONO_AOT_FILE_FLAG_LLVM_THUMB))
2494 * decode_llvm_mono_eh_frame:
2496 * Decode the EH information emitted by our modified LLVM compiler and construct a
2497 * MonoJitInfo structure from it.
2498 * LOCKING: Acquires the domain lock.
2501 decode_llvm_mono_eh_frame (MonoAotModule *amodule, MonoDomain *domain,
2502 MonoMethod *method, guint8 *code, guint32 code_len,
2503 MonoJitExceptionInfo *clauses, int num_clauses,
2504 MonoJitInfoFlags flags,
2506 int *this_reg, int *this_offset)
2508 guint8 *p, *code1, *code2;
2509 guint8 *fde, *cie, *code_start, *code_end;
2510 int version, fde_count;
2512 int i, pos, left, right;
2513 MonoJitExceptionInfo *ei;
2514 guint32 fde_len, ei_len, nested_len, nindex;
2515 gpointer *type_info;
2517 MonoLLVMFDEInfo info;
2519 if (!amodule->mono_eh_frame) {
2520 jinfo = mono_domain_alloc0_lock_free (domain, mono_jit_info_size (flags, num_clauses, 0));
2521 mono_jit_info_init (jinfo, method, code, code_len, flags, num_clauses, 0);
2522 memcpy (jinfo->clauses, clauses, num_clauses * sizeof (MonoJitExceptionInfo));
2526 g_assert (amodule->mono_eh_frame && code);
2528 p = amodule->mono_eh_frame;
2530 /* p points to data emitted by LLVM in DwarfMonoException::EmitMonoEHFrame () */
2534 g_assert (version == 3);
2536 /* func_encoding = *p; */
2538 p = ALIGN_PTR_TO (p, 4);
2540 fde_count = *(guint32*)p;
2544 /* There is +1 entry in the table */
2545 cie = p + ((fde_count + 1) * 8);
2547 /* Binary search in the table to find the entry for code */
2551 pos = (left + right) / 2;
2553 /* The table contains method index/fde offset pairs */
2554 g_assert (table [(pos * 2)] != -1);
2555 code1 = amodule->methods [table [(pos * 2)]];
2556 if (pos + 1 == fde_count) {
2557 code2 = amodule->llvm_code_end;
2559 g_assert (table [(pos + 1) * 2] != -1);
2560 code2 = amodule->methods [table [(pos + 1) * 2]];
2565 else if (code >= code2)
2571 code_start = amodule->methods [table [(pos * 2)]];
2572 if (pos + 1 == fde_count) {
2573 /* The +1 entry in the table contains the length of the last method */
2574 int len = table [(pos + 1) * 2];
2575 code_end = code_start + len;
2577 code_end = amodule->methods [table [(pos + 1) * 2]];
2580 code_len = code_end - code_start;
2582 g_assert (code >= code_start && code < code_end);
2584 if (is_thumb_code (amodule, code_start))
2585 /* Clear thumb flag */
2586 code_start = (guint8*)(((mgreg_t)code_start) & ~1);
2588 fde = amodule->mono_eh_frame + table [(pos * 2) + 1];
2589 /* This won't overflow because there is +1 entry in the table */
2590 fde_len = table [(pos * 2) + 2 + 1] - table [(pos * 2) + 1];
2592 mono_unwind_decode_llvm_mono_fde (fde, fde_len, cie, code_start, &info);
2594 ei_len = info.ex_info_len;
2595 type_info = info.type_info;
2596 *this_reg = info.this_reg;
2597 *this_offset = info.this_offset;
2599 /* Count number of nested clauses */
2601 for (i = 0; i < ei_len; ++i) {
2602 /* This might be unaligned */
2603 gint32 cindex1 = read32 (type_info [i]);
2606 for (l = nesting [cindex1]; l; l = l->next)
2611 * LLVM might represent one IL region with multiple regions, so have to
2612 * allocate a new JI.
2615 mono_domain_alloc0_lock_free (domain, mono_jit_info_size (flags, ei_len + nested_len, 0));
2616 mono_jit_info_init (jinfo, method, code, code_len, flags, ei_len + nested_len, 0);
2618 jinfo->unwind_info = mono_cache_unwind_info (info.unw_info, info.unw_info_len);
2619 /* This signals that unwind_info points to a normal cached unwind info */
2620 jinfo->from_aot = 0;
2621 jinfo->from_llvm = 1;
2623 for (i = 0; i < ei_len; ++i) {
2625 * clauses contains the original IL exception info saved by the AOT
2626 * compiler, we have to combine that with the information produced by LLVM
2628 /* The type_info entries contain IL clause indexes */
2629 int clause_index = read32 (type_info [i]);
2630 MonoJitExceptionInfo *jei = &jinfo->clauses [i];
2631 MonoJitExceptionInfo *orig_jei = &clauses [clause_index];
2633 g_assert (clause_index < num_clauses);
2634 jei->flags = orig_jei->flags;
2635 jei->data.catch_class = orig_jei->data.catch_class;
2637 jei->try_start = ei [i].try_start;
2638 jei->try_end = ei [i].try_end;
2639 jei->handler_start = ei [i].handler_start;
2640 jei->clause_index = clause_index;
2642 if (is_thumb_code (amodule, jei->try_start)) {
2643 jei->try_start = (void*)((mgreg_t)jei->try_start & ~1);
2644 jei->try_end = (void*)((mgreg_t)jei->try_end & ~1);
2645 /* Make sure we transition to thumb when a handler starts */
2646 jei->handler_start = (void*)((mgreg_t)jei->handler_start + 1);
2650 /* See exception_cb () in mini-llvm.c as to why this is needed */
2652 for (i = 0; i < ei_len; ++i) {
2653 gint32 cindex1 = read32 (type_info [i]);
2656 for (l = nesting [cindex1]; l; l = l->next) {
2657 gint32 nesting_cindex = GPOINTER_TO_INT (l->data);
2658 MonoJitExceptionInfo *nesting_ei;
2659 MonoJitExceptionInfo *nesting_clause = &clauses [nesting_cindex];
2661 nesting_ei = &jinfo->clauses [nindex];
2664 memcpy (nesting_ei, &jinfo->clauses [i], sizeof (MonoJitExceptionInfo));
2665 nesting_ei->flags = nesting_clause->flags;
2666 nesting_ei->data.catch_class = nesting_clause->data.catch_class;
2667 nesting_ei->clause_index = nesting_cindex;
2670 g_assert (nindex == ei_len + nested_len);
2676 alloc0_jit_info_data (MonoDomain *domain, int size, gboolean async_context)
2680 if (async_context) {
2681 res = mono_domain_alloc0_lock_free (domain, size);
2682 InterlockedExchangeAdd (&async_jit_info_size, size);
2684 res = mono_domain_alloc0 (domain, size);
2690 * LOCKING: Acquires the domain lock.
2691 * In async context, this is async safe.
2694 decode_exception_debug_info (MonoAotModule *amodule, MonoDomain *domain,
2695 MonoMethod *method, guint8* ex_info,
2696 guint8 *code, guint32 code_len)
2698 int i, buf_len, num_clauses, len;
2700 MonoJitInfoFlags flags = JIT_INFO_NONE;
2701 guint unwind_info, eflags;
2702 gboolean has_generic_jit_info, has_dwarf_unwind_info, has_clauses, has_seq_points, has_try_block_holes, has_arch_eh_jit_info;
2703 gboolean from_llvm, has_gc_map;
2705 int try_holes_info_size, num_holes;
2706 int this_reg = 0, this_offset = 0;
2709 /* Load the method info from the AOT file */
2710 async = mono_thread_info_is_async_context ();
2713 eflags = decode_value (p, &p);
2714 has_generic_jit_info = (eflags & 1) != 0;
2715 has_dwarf_unwind_info = (eflags & 2) != 0;
2716 has_clauses = (eflags & 4) != 0;
2717 has_seq_points = (eflags & 8) != 0;
2718 from_llvm = (eflags & 16) != 0;
2719 has_try_block_holes = (eflags & 32) != 0;
2720 has_gc_map = (eflags & 64) != 0;
2721 has_arch_eh_jit_info = (eflags & 128) != 0;
2723 if (has_dwarf_unwind_info) {
2724 unwind_info = decode_value (p, &p);
2725 g_assert (unwind_info < (1 << 30));
2727 unwind_info = decode_value (p, &p);
2729 if (has_generic_jit_info)
2730 flags |= JIT_INFO_HAS_GENERIC_JIT_INFO;
2732 if (has_try_block_holes) {
2733 num_holes = decode_value (p, &p);
2734 flags |= JIT_INFO_HAS_TRY_BLOCK_HOLES;
2735 try_holes_info_size = sizeof (MonoTryBlockHoleTableJitInfo) + num_holes * sizeof (MonoTryBlockHoleJitInfo);
2737 num_holes = try_holes_info_size = 0;
2740 if (has_arch_eh_jit_info) {
2741 flags |= JIT_INFO_HAS_ARCH_EH_INFO;
2742 /* Overwrite the original code_len which includes alignment padding */
2743 code_len = decode_value (p, &p);
2746 /* Exception table */
2748 num_clauses = decode_value (p, &p);
2753 MonoJitExceptionInfo *clauses;
2760 * Part of the info is encoded by the AOT compiler, the rest is in the .eh_frame
2763 clauses = g_new0 (MonoJitExceptionInfo, num_clauses);
2764 nesting = g_new0 (GSList*, num_clauses);
2766 for (i = 0; i < num_clauses; ++i) {
2767 MonoJitExceptionInfo *ei = &clauses [i];
2769 ei->flags = decode_value (p, &p);
2771 if (decode_value (p, &p))
2772 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
2774 ei->clause_index = i;
2776 ei->try_offset = decode_value (p, &p);
2777 ei->try_len = decode_value (p, &p);
2778 ei->handler_offset = decode_value (p, &p);
2779 ei->handler_len = decode_value (p, &p);
2781 /* Read the list of nesting clauses */
2783 int nesting_index = decode_value (p, &p);
2784 if (nesting_index == -1)
2786 nesting [i] = g_slist_prepend (nesting [i], GINT_TO_POINTER (nesting_index));
2790 jinfo = decode_llvm_mono_eh_frame (amodule, domain, method, code, code_len, clauses, num_clauses, flags, nesting, &this_reg, &this_offset);
2793 for (i = 0; i < num_clauses; ++i)
2794 g_slist_free (nesting [i]);
2797 len = mono_jit_info_size (flags, num_clauses, num_holes);
2798 jinfo = alloc0_jit_info_data (domain, len, async);
2799 mono_jit_info_init (jinfo, method, code, code_len, flags, num_clauses, num_holes);
2801 for (i = 0; i < jinfo->num_clauses; ++i) {
2802 MonoJitExceptionInfo *ei = &jinfo->clauses [i];
2804 ei->flags = decode_value (p, &p);
2806 #ifdef MONO_CONTEXT_SET_LLVM_EXC_REG
2807 /* Not used for catch clauses */
2808 if (ei->flags != MONO_EXCEPTION_CLAUSE_NONE)
2809 ei->exvar_offset = decode_value (p, &p);
2811 ei->exvar_offset = decode_value (p, &p);
2814 if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER || ei->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
2815 ei->data.filter = code + decode_value (p, &p);
2817 int len = decode_value (p, &p);
2823 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
2827 ei->try_start = code + decode_value (p, &p);
2828 ei->try_end = code + decode_value (p, &p);
2829 ei->handler_start = code + decode_value (p, &p);
2832 jinfo->unwind_info = unwind_info;
2833 jinfo->domain_neutral = 0;
2834 jinfo->from_aot = 1;
2837 if (has_try_block_holes) {
2838 MonoTryBlockHoleTableJitInfo *table;
2840 g_assert (jinfo->has_try_block_holes);
2842 table = mono_jit_info_get_try_block_hole_table_info (jinfo);
2845 table->num_holes = (guint16)num_holes;
2846 for (i = 0; i < num_holes; ++i) {
2847 MonoTryBlockHoleJitInfo *hole = &table->holes [i];
2848 hole->clause = decode_value (p, &p);
2849 hole->length = decode_value (p, &p);
2850 hole->offset = decode_value (p, &p);
2854 if (has_arch_eh_jit_info) {
2855 MonoArchEHJitInfo *eh_info;
2857 g_assert (jinfo->has_arch_eh_info);
2859 eh_info = mono_jit_info_get_arch_eh_info (jinfo);
2860 eh_info->stack_size = decode_value (p, &p);
2861 eh_info->epilog_size = decode_value (p, &p);
2865 /* The rest is not needed in async mode */
2866 jinfo->async = TRUE;
2867 jinfo->d.aot_info = amodule;
2872 if (has_generic_jit_info) {
2873 MonoGenericJitInfo *gi;
2876 g_assert (jinfo->has_generic_jit_info);
2878 gi = mono_jit_info_get_generic_jit_info (jinfo);
2881 gi->nlocs = decode_value (p, &p);
2883 gi->locations = alloc0_jit_info_data (domain, gi->nlocs * sizeof (MonoDwarfLocListEntry), async);
2884 for (i = 0; i < gi->nlocs; ++i) {
2885 MonoDwarfLocListEntry *entry = &gi->locations [i];
2887 entry->is_reg = decode_value (p, &p);
2888 entry->reg = decode_value (p, &p);
2890 entry->offset = decode_value (p, &p);
2892 entry->from = decode_value (p, &p);
2893 entry->to = decode_value (p, &p);
2898 gi->has_this = this_reg != -1;
2899 gi->this_reg = this_reg;
2900 gi->this_offset = this_offset;
2902 gi->has_this = decode_value (p, &p);
2903 gi->this_reg = decode_value (p, &p);
2904 gi->this_offset = decode_value (p, &p);
2908 len = decode_value (p, &p);
2912 jinfo->d.method = decode_resolve_method_ref (amodule, p, &p);
2914 gi->generic_sharing_context = g_new0 (MonoGenericSharingContext, 1);
2915 if (decode_value (p, &p)) {
2917 MonoGenericSharingContext *gsctx = gi->generic_sharing_context;
2919 gsctx->is_gsharedvt = TRUE;
2923 if (method && has_seq_points) {
2924 MonoSeqPointInfo *seq_points;
2926 p += mono_seq_point_info_read (&seq_points, p, FALSE);
2928 mono_domain_lock (domain);
2929 g_hash_table_insert (domain_jit_info (domain)->seq_points, method, seq_points);
2930 mono_domain_unlock (domain);
2933 /* Load debug info */
2934 buf_len = decode_value (p, &p);
2936 mono_debug_add_aot_method (domain, method, code, p, buf_len);
2940 int map_size = decode_value (p, &p);
2941 /* The GC map requires 4 bytes of alignment */
2942 while ((guint64)(gsize)p % 4)
2948 if (amodule != jinfo->d.method->klass->image->aot_module) {
2951 ji_to_amodule = g_hash_table_new (NULL, NULL);
2952 g_hash_table_insert (ji_to_amodule, jinfo, amodule);
2960 amodule_contains_code_addr (MonoAotModule *amodule, guint8 *code)
2962 return (code >= amodule->jit_code_start && code <= amodule->jit_code_end) ||
2963 (code >= amodule->llvm_code_start && code <= amodule->llvm_code_end);
2967 * mono_aot_get_unwind_info:
2969 * Return a pointer to the DWARF unwind info belonging to JI.
2972 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
2974 MonoAotModule *amodule;
2976 guint8 *code = ji->code_start;
2979 amodule = ji->d.aot_info;
2981 amodule = jinfo_get_method (ji)->klass->image->aot_module;
2983 g_assert (ji->from_aot);
2985 if (!amodule_contains_code_addr (amodule, code)) {
2986 /* ji belongs to a different aot module than amodule */
2988 g_assert (ji_to_amodule);
2989 amodule = g_hash_table_lookup (ji_to_amodule, ji);
2991 g_assert (amodule_contains_code_addr (amodule, code));
2995 p = amodule->unwind_info + ji->unwind_info;
2996 *unwind_info_len = decode_value (p, &p);
3001 msort_method_addresses_internal (gpointer *array, int *indexes, int lo, int hi, gpointer *scratch, int *scratch_indexes)
3003 int mid = (lo + hi) / 2;
3010 for (i = lo; i < hi; ++i)
3011 if (array [i] > array [i + 1])
3014 /* Already sorted */
3018 msort_method_addresses_internal (array, indexes, lo, mid, scratch, scratch_indexes);
3019 msort_method_addresses_internal (array, indexes, mid + 1, hi, scratch, scratch_indexes);
3021 if (array [mid] < array [mid + 1])
3027 for (i = lo; i <= hi; i ++) {
3028 if (t_lo <= mid && ((t_hi > hi) || array [t_lo] < array [t_hi])) {
3029 scratch [i] = array [t_lo];
3030 scratch_indexes [i] = indexes [t_lo];
3033 scratch [i] = array [t_hi];
3034 scratch_indexes [i] = indexes [t_hi];
3038 for (i = lo; i <= hi; ++i) {
3039 array [i] = scratch [i];
3040 indexes [i] = scratch_indexes [i];
3045 msort_method_addresses (gpointer *array, int *indexes, int len)
3048 int *scratch_indexes;
3050 scratch = g_new (gpointer, len);
3051 scratch_indexes = g_new (int, len);
3052 msort_method_addresses_internal (array, indexes, 0, len - 1, scratch, scratch_indexes);
3054 g_free (scratch_indexes);
3058 * mono_aot_find_jit_info:
3060 * In async context, the resulting MonoJitInfo will not have its method field set, and it will not be added
3061 * to the jit info tables.
3062 * FIXME: Large sizes in the lock free allocator
3065 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
3067 int pos, left, right, code_len;
3068 int method_index, table_len;
3070 MonoAotModule *amodule = image->aot_module;
3071 MonoMethod *method = NULL;
3073 guint8 *code, *ex_info, *p;
3077 guint8 *code1, *code2;
3084 nmethods = amodule->info.nmethods;
3086 if (domain != mono_get_root_domain ())
3090 if (!amodule_contains_code_addr (amodule, addr))
3093 async = mono_thread_info_is_async_context ();
3095 /* Compute a sorted table mapping code to method indexes. */
3096 if (!amodule->sorted_methods) {
3098 gpointer *methods = g_new0 (gpointer, nmethods);
3099 int *method_indexes = g_new0 (int, nmethods);
3100 int methods_len = 0;
3102 for (i = 0; i < nmethods; ++i) {
3103 /* Skip the -1 entries to speed up sorting */
3104 if (amodule->methods [i] == GINT_TO_POINTER (-1))
3106 methods [methods_len] = amodule->methods [i];
3107 method_indexes [methods_len] = i;
3110 /* Use a merge sort as this is mostly sorted */
3111 msort_method_addresses (methods, method_indexes, methods_len);
3112 for (i = 0; i < methods_len -1; ++i)
3113 g_assert (methods [i] <= methods [i + 1]);
3114 amodule->sorted_methods_len = methods_len;
3115 if (InterlockedCompareExchangePointer ((gpointer*)&amodule->sorted_methods, methods, NULL) != NULL)
3116 /* Somebody got in before us */
3118 if (InterlockedCompareExchangePointer ((gpointer*)&amodule->sorted_method_indexes, method_indexes, NULL) != NULL)
3119 /* Somebody got in before us */
3120 g_free (method_indexes);
3123 /* Binary search in the sorted_methods table */
3124 methods = amodule->sorted_methods;
3125 methods_len = amodule->sorted_methods_len;
3128 right = methods_len;
3130 pos = (left + right) / 2;
3132 code1 = methods [pos];
3133 if (pos + 1 == methods_len) {
3134 if (code1 >= amodule->jit_code_start && code1 < amodule->jit_code_end)
3135 code2 = amodule->jit_code_end;
3137 code2 = amodule->llvm_code_end;
3139 code2 = methods [pos + 1];
3144 else if (code >= code2)
3150 g_assert (addr >= methods [pos]);
3151 if (pos + 1 < methods_len)
3152 g_assert (addr < methods [pos + 1]);
3153 method_index = amodule->sorted_method_indexes [pos];
3155 /* In async mode, jinfo is not added to the normal jit info table, so have to cache it ourselves */
3157 JitInfoMap *table = amodule->async_jit_info_table;
3161 len = table [0].method_index;
3162 for (i = 1; i < len; ++i) {
3163 if (table [i].method_index == method_index)
3164 return table [i].jinfo;
3169 code = amodule->methods [method_index];
3170 ex_info = &amodule->blob [mono_aot_get_offset (amodule->ex_info_offsets, method_index)];
3172 if (pos == methods_len - 1) {
3173 if (code >= amodule->jit_code_start && code < amodule->jit_code_end)
3174 code_len = amodule->jit_code_end - code;
3176 code_len = amodule->llvm_code_end - code;
3178 code_len = (guint8*)methods [pos + 1] - (guint8*)methods [pos];
3181 g_assert ((guint8*)code <= (guint8*)addr && (guint8*)addr < (guint8*)code + code_len);
3183 /* Might be a wrapper/extra method */
3185 if (amodule->extra_methods) {
3186 amodule_lock (amodule);
3187 method = g_hash_table_lookup (amodule->extra_methods, GUINT_TO_POINTER (method_index));
3188 amodule_unlock (amodule);
3194 if (method_index >= image->tables [MONO_TABLE_METHOD].rows) {
3196 * This is hit for extra methods which are called directly, so they are
3197 * not in amodule->extra_methods.
3199 table_len = amodule->extra_method_info_offsets [0];
3200 table = amodule->extra_method_info_offsets + 1;
3207 pos = ((left + right) / 2);
3209 g_assert (pos < table_len);
3211 if (table [pos * 2] < method_index)
3213 else if (table [pos * 2] > method_index)
3219 p = amodule->blob + table [(pos * 2) + 1];
3220 method = decode_resolve_method_ref (amodule, p, &p);
3222 /* Happens when a random address is passed in which matches a not-yey called wrapper encoded using its name */
3225 token = mono_metadata_make_token (MONO_TABLE_METHOD, method_index + 1);
3226 method = mono_get_method (image, token, NULL);
3233 //printf ("F: %s\n", mono_method_full_name (method, TRUE));
3235 jinfo = decode_exception_debug_info (amodule, domain, method, ex_info, code, code_len);
3237 g_assert ((guint8*)addr >= (guint8*)jinfo->code_start);
3239 /* Add it to the normal JitInfo tables */
3241 JitInfoMap *old_table, *new_table;
3245 * Use a simple inmutable table with linear search to cache async jit info entries.
3246 * This assumes that the number of entries is small.
3249 /* Copy the table, adding a new entry at the end */
3250 old_table = amodule->async_jit_info_table;
3252 len = old_table[0].method_index;
3255 new_table = alloc0_jit_info_data (domain, (len + 1) * sizeof (JitInfoMap), async);
3257 memcpy (new_table, old_table, len * sizeof (JitInfoMap));
3258 new_table [0].method_index = len + 1;
3259 new_table [len].method_index = method_index;
3260 new_table [len].jinfo = jinfo;
3262 mono_memory_barrier ();
3263 if (InterlockedCompareExchangePointer ((gpointer)&amodule->async_jit_info_table, new_table, old_table) == old_table)
3267 mono_jit_info_table_add (domain, jinfo);
3270 if ((guint8*)addr >= (guint8*)jinfo->code_start + jinfo->code_size)
3271 /* addr is in the padding between methods, see the adjustment of code_size in decode_exception_debug_info () */
3278 decode_patch (MonoAotModule *aot_module, MonoMemPool *mp, MonoJumpInfo *ji, guint8 *buf, guint8 **endbuf)
3286 case MONO_PATCH_INFO_METHOD:
3287 case MONO_PATCH_INFO_METHOD_JUMP:
3288 case MONO_PATCH_INFO_ICALL_ADDR:
3289 case MONO_PATCH_INFO_METHOD_RGCTX:
3290 case MONO_PATCH_INFO_METHOD_CODE_SLOT: {
3294 res = decode_method_ref (aot_module, &ref, p, &p);
3298 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)) {
3299 ji->data.target = mono_create_ftnptr (mono_domain_get (), mono_create_jit_trampoline_from_token (ref.image, ref.token));
3300 ji->type = MONO_PATCH_INFO_ABS;
3304 ji->data.method = ref.method;
3306 ji->data.method = mono_get_method (ref.image, ref.token, NULL);
3307 g_assert (ji->data.method);
3308 mono_class_init (ji->data.method->klass);
3312 case MONO_PATCH_INFO_INTERNAL_METHOD:
3313 case MONO_PATCH_INFO_JIT_ICALL_ADDR: {
3314 guint32 len = decode_value (p, &p);
3316 ji->data.name = (char*)p;
3320 case MONO_PATCH_INFO_METHODCONST:
3322 ji->data.method = decode_resolve_method_ref (aot_module, p, &p);
3323 if (!ji->data.method)
3326 case MONO_PATCH_INFO_VTABLE:
3327 case MONO_PATCH_INFO_CLASS:
3328 case MONO_PATCH_INFO_IID:
3329 case MONO_PATCH_INFO_ADJUSTED_IID:
3331 ji->data.klass = decode_klass_ref (aot_module, p, &p);
3332 if (!ji->data.klass)
3335 case MONO_PATCH_INFO_DELEGATE_TRAMPOLINE:
3336 ji->data.del_tramp = mono_mempool_alloc0 (mp, sizeof (MonoDelegateClassMethodPair));
3337 ji->data.del_tramp->klass = decode_klass_ref (aot_module, p, &p);
3338 if (!ji->data.del_tramp->klass)
3340 if (decode_value (p, &p)) {
3341 ji->data.del_tramp->method = decode_resolve_method_ref (aot_module, p, &p);
3342 if (!ji->data.del_tramp->method)
3345 ji->data.del_tramp->is_virtual = decode_value (p, &p) ? TRUE : FALSE;
3347 case MONO_PATCH_INFO_IMAGE:
3348 ji->data.image = load_image (aot_module, decode_value (p, &p), TRUE);
3349 if (!ji->data.image)
3352 case MONO_PATCH_INFO_FIELD:
3353 case MONO_PATCH_INFO_SFLDA:
3355 ji->data.field = decode_field_info (aot_module, p, &p);
3356 if (!ji->data.field)
3359 case MONO_PATCH_INFO_SWITCH:
3360 ji->data.table = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoBBTable));
3361 ji->data.table->table_size = decode_value (p, &p);
3362 table = mono_domain_alloc (mono_domain_get (), sizeof (gpointer) * ji->data.table->table_size);
3363 ji->data.table->table = (MonoBasicBlock**)table;
3364 for (i = 0; i < ji->data.table->table_size; i++)
3365 table [i] = (gpointer)(gssize)decode_value (p, &p);
3367 case MONO_PATCH_INFO_R4: {
3370 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (float));
3371 val = decode_value (p, &p);
3372 *(float*)ji->data.target = *(float*)&val;
3375 case MONO_PATCH_INFO_R8: {
3379 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (double));
3381 val [0] = decode_value (p, &p);
3382 val [1] = decode_value (p, &p);
3383 v = ((guint64)val [1] << 32) | ((guint64)val [0]);
3384 *(double*)ji->data.target = *(double*)&v;
3387 case MONO_PATCH_INFO_LDSTR:
3388 image = load_image (aot_module, decode_value (p, &p), TRUE);
3391 ji->data.token = mono_jump_info_token_new (mp, image, MONO_TOKEN_STRING + decode_value (p, &p));
3393 case MONO_PATCH_INFO_RVA:
3394 case MONO_PATCH_INFO_DECLSEC:
3395 case MONO_PATCH_INFO_LDTOKEN:
3396 case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
3398 image = load_image (aot_module, decode_value (p, &p), TRUE);
3401 ji->data.token = mono_jump_info_token_new (mp, image, decode_value (p, &p));
3403 ji->data.token->has_context = decode_value (p, &p);
3404 if (ji->data.token->has_context) {
3405 gboolean res = decode_generic_context (aot_module, &ji->data.token->context, p, &p);
3410 case MONO_PATCH_INFO_EXC_NAME:
3411 ji->data.klass = decode_klass_ref (aot_module, p, &p);
3412 if (!ji->data.klass)
3414 ji->data.name = ji->data.klass->name;
3416 case MONO_PATCH_INFO_METHOD_REL:
3417 ji->data.offset = decode_value (p, &p);
3419 case MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG:
3420 case MONO_PATCH_INFO_GC_CARD_TABLE_ADDR:
3421 case MONO_PATCH_INFO_GC_NURSERY_START:
3422 case MONO_PATCH_INFO_GC_NURSERY_BITS:
3423 case MONO_PATCH_INFO_JIT_TLS_ID:
3425 case MONO_PATCH_INFO_CASTCLASS_CACHE:
3426 ji->data.index = decode_value (p, &p);
3428 case MONO_PATCH_INFO_RGCTX_FETCH:
3429 case MONO_PATCH_INFO_RGCTX_SLOT_INDEX: {
3431 MonoJumpInfoRgctxEntry *entry;
3432 guint32 offset, val;
3435 offset = decode_value (p, &p);
3436 val = decode_value (p, &p);
3438 entry = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
3439 p2 = aot_module->blob + offset;
3440 entry->method = decode_resolve_method_ref (aot_module, p2, &p2);
3441 entry->in_mrgctx = ((val & 1) > 0) ? TRUE : FALSE;
3442 entry->info_type = (val >> 1) & 0xff;
3443 entry->data = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
3444 entry->data->type = (val >> 9) & 0xff;
3446 res = decode_patch (aot_module, mp, entry->data, p, &p);
3449 ji->data.rgctx_entry = entry;
3452 case MONO_PATCH_INFO_SEQ_POINT_INFO:
3453 case MONO_PATCH_INFO_AOT_MODULE:
3454 case MONO_PATCH_INFO_MSCORLIB_GOT_ADDR:
3456 case MONO_PATCH_INFO_SIGNATURE:
3457 ji->data.target = decode_signature (aot_module, p, &p);
3459 case MONO_PATCH_INFO_TLS_OFFSET:
3460 ji->data.target = GINT_TO_POINTER (decode_value (p, &p));
3462 case MONO_PATCH_INFO_GSHAREDVT_CALL: {
3463 MonoJumpInfoGSharedVtCall *info = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoGSharedVtCall));
3464 info->sig = decode_signature (aot_module, p, &p);
3465 g_assert (info->sig);
3466 info->method = decode_resolve_method_ref (aot_module, p, &p);
3467 g_assert (info->method);
3469 ji->data.target = info;
3472 case MONO_PATCH_INFO_GSHAREDVT_METHOD: {
3473 MonoGSharedVtMethodInfo *info = mono_mempool_alloc0 (mp, sizeof (MonoGSharedVtMethodInfo));
3476 info->method = decode_resolve_method_ref (aot_module, p, &p);
3477 g_assert (info->method);
3478 info->num_entries = decode_value (p, &p);
3479 info->count_entries = info->num_entries;
3480 info->entries = mono_mempool_alloc0 (mp, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->num_entries);
3481 for (i = 0; i < info->num_entries; ++i) {
3482 MonoRuntimeGenericContextInfoTemplate *template = &info->entries [i];
3484 template->info_type = decode_value (p, &p);
3485 switch (mini_rgctx_info_type_to_patch_info_type (template->info_type)) {
3486 case MONO_PATCH_INFO_CLASS: {
3487 MonoClass *klass = decode_klass_ref (aot_module, p, &p);
3490 template->data = &klass->byval_arg;
3493 case MONO_PATCH_INFO_FIELD:
3494 template->data = decode_field_info (aot_module, p, &p);
3495 if (!template->data)
3499 g_assert_not_reached ();
3503 ji->data.target = info;
3506 case MONO_PATCH_INFO_LDSTR_LIT: {
3507 int len = decode_value (p, &p);
3510 s = mono_mempool_alloc0 (mp, len + 1);
3511 memcpy (s, p, len + 1);
3514 ji->data.target = s;
3517 case MONO_PATCH_INFO_VIRT_METHOD: {
3518 MonoJumpInfoVirtMethod *info = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoVirtMethod));
3520 info->klass = decode_klass_ref (aot_module, p, &p);
3521 g_assert (info->klass);
3522 info->method = decode_resolve_method_ref (aot_module, p, &p);
3523 g_assert (info->method);
3525 ji->data.target = info;
3528 case MONO_PATCH_INFO_GC_SAFE_POINT_FLAG:
3530 case MONO_PATCH_INFO_AOT_JIT_INFO:
3531 ji->data.index = decode_value (p, &p);
3534 g_warning ("unhandled type %d", ji->type);
3535 g_assert_not_reached ();
3549 * Decode a list of patches identified by the got offsets in GOT_OFFSETS. Return an array of
3550 * MonoJumpInfo structures allocated from MP.
3552 static MonoJumpInfo*
3553 decode_patches (MonoAotModule *amodule, MonoMemPool *mp, int n_patches, gboolean llvm, guint32 *got_offsets)
3555 MonoJumpInfo *patches;
3558 guint32 *got_info_offsets;
3563 got = amodule->llvm_got;
3564 got_info_offsets = amodule->info.llvm_got_info_offsets;
3567 got_info_offsets = amodule->info.got_info_offsets;
3570 patches = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo) * n_patches);
3571 for (i = 0; i < n_patches; ++i) {
3572 guint8 *p = amodule->blob + mono_aot_get_offset (got_info_offsets, got_offsets [i]);
3575 ji->type = decode_value (p, &p);
3577 /* See load_method () for SFLDA */
3578 if (got && got [got_offsets [i]] && ji->type != MONO_PATCH_INFO_SFLDA) {
3579 /* Already loaded */
3581 res = decode_patch (amodule, mp, ji, p, &p);
3590 static MonoJumpInfo*
3591 load_patch_info (MonoAotModule *amodule, MonoMemPool *mp, int n_patches,
3592 gboolean llvm, guint32 **got_slots,
3593 guint8 *buf, guint8 **endbuf)
3595 MonoJumpInfo *patches;
3601 *got_slots = g_malloc (sizeof (guint32) * n_patches);
3602 for (pindex = 0; pindex < n_patches; ++pindex) {
3603 (*got_slots)[pindex] = decode_value (p, &p);
3606 patches = decode_patches (amodule, mp, n_patches, llvm, *got_slots);
3608 g_free (*got_slots);
3618 register_jump_target_got_slot (MonoDomain *domain, MonoMethod *method, gpointer *got_slot)
3621 * Jump addresses cannot be patched by the trampoline code since it
3622 * does not have access to the caller's address. Instead, we collect
3623 * the addresses of the GOT slots pointing to a method, and patch
3624 * them after the method has been compiled.
3626 MonoJitDomainInfo *info = domain_jit_info (domain);
3629 mono_domain_lock (domain);
3630 if (!info->jump_target_got_slot_hash)
3631 info->jump_target_got_slot_hash = g_hash_table_new (NULL, NULL);
3632 list = g_hash_table_lookup (info->jump_target_got_slot_hash, method);
3633 list = g_slist_prepend (list, got_slot);
3634 g_hash_table_insert (info->jump_target_got_slot_hash, method, list);
3635 mono_domain_unlock (domain);
3641 * Load the method identified by METHOD_INDEX from the AOT image. Return a
3642 * pointer to the native code of the method, or NULL if not found.
3643 * METHOD might not be set if the caller only has the image/token info.
3646 load_method (MonoDomain *domain, MonoAotModule *amodule, MonoImage *image, MonoMethod *method, guint32 token, int method_index)
3648 MonoJitInfo *jinfo = NULL;
3649 guint8 *code = NULL, *info;
3652 init_amodule_got (amodule);
3654 if (mono_profiler_get_events () & MONO_PROFILE_ENTER_LEAVE) {
3656 /* The caller cannot handle this */
3657 g_assert_not_reached ();
3661 if (domain != mono_get_root_domain ())
3662 /* Non shared AOT code can't be used in other appdomains */
3665 if (amodule->out_of_date)
3668 if (amodule->info.llvm_get_method) {
3670 * Obtain the method address by calling a generated function in the LLVM module.
3672 gpointer (*get_method) (int) = amodule->info.llvm_get_method;
3673 code = get_method (method_index);
3678 if (amodule->methods [method_index] == GINT_TO_POINTER (-1)) {
3679 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
3683 method = mono_get_method (image, token, NULL);
3684 full_name = mono_method_full_name (method, TRUE);
3685 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT: NOT FOUND: %s.", full_name);
3690 code = amodule->methods [method_index];
3693 info = &amodule->blob [mono_aot_get_offset (amodule->method_info_offsets, method_index)];
3695 if (!amodule->methods_loaded) {
3696 amodule_lock (amodule);
3697 if (!amodule->methods_loaded) {
3700 loaded = g_new0 (guint32, amodule->info.nmethods / 32 + 1);
3701 mono_memory_barrier ();
3702 amodule->methods_loaded = loaded;
3704 amodule_unlock (amodule);
3707 if ((amodule->methods_loaded [method_index / 32] >> (method_index % 32)) & 0x1)
3710 if (mono_last_aot_method != -1) {
3711 if (mono_jit_stats.methods_aot >= mono_last_aot_method)
3713 else if (mono_jit_stats.methods_aot == mono_last_aot_method - 1) {
3715 method = mono_get_method (image, token, NULL);
3717 char *name = mono_method_full_name (method, TRUE);
3718 g_print ("LAST AOT METHOD: %s.\n", name);
3721 g_print ("LAST AOT METHOD: %p %d\n", code, method_index);
3726 if (!(is_llvm_code (amodule, code) && (amodule->info.flags & MONO_AOT_FILE_FLAG_LLVM_ONLY))) {
3727 res = init_llvm_method (amodule, method_index, method, NULL, NULL);
3732 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
3736 method = mono_get_method (image, token, NULL);
3738 full_name = mono_method_full_name (method, TRUE);
3741 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
3743 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT: FOUND method %s [%p - %p %p]", full_name, code, code + jinfo->code_size, info);
3747 amodule_lock (amodule);
3749 InterlockedIncrement (&mono_jit_stats.methods_aot);
3751 amodule->methods_loaded [method_index / 32] |= 1 << (method_index % 32);
3755 if (method && method->wrapper_type)
3756 g_hash_table_insert (amodule->method_to_code, method, code);
3758 amodule_unlock (amodule);
3760 if (mono_profiler_get_events () & MONO_PROFILE_JIT_COMPILATION) {
3764 method = mono_get_method (amodule->assembly->image, token, NULL);
3767 mono_profiler_method_jit (method);
3768 jinfo = mono_jit_info_table_find (domain, (char*)code);
3770 mono_profiler_method_end_jit (method, jinfo, MONO_PROFILE_OK);
3783 find_aot_method_in_amodule (MonoAotModule *amodule, MonoMethod *method, guint32 hash_full)
3785 guint32 table_size, entry_size, hash;
3786 guint32 *table, *entry;
3788 static guint32 n_extra_decodes;
3790 if (!amodule || amodule->out_of_date)
3793 table_size = amodule->extra_method_table [0];
3794 hash = hash_full % table_size;
3795 table = amodule->extra_method_table + 1;
3798 entry = &table [hash * entry_size];
3805 guint32 key = entry [0];
3806 guint32 value = entry [1];
3807 guint32 next = entry [entry_size - 1];
3811 p = amodule->blob + key;
3814 amodule_lock (amodule);
3815 if (!amodule->method_ref_to_method)
3816 amodule->method_ref_to_method = g_hash_table_new (NULL, NULL);
3817 m = g_hash_table_lookup (amodule->method_ref_to_method, p);
3818 amodule_unlock (amodule);
3820 m = decode_resolve_method_ref_with_target (amodule, method, p, &p);
3822 * Can't catche runtime invoke wrappers since it would break
3823 * the check in decode_method_ref_with_target ().
3825 if (m && m->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE) {
3826 amodule_lock (amodule);
3827 g_hash_table_insert (amodule->method_ref_to_method, orig_p, m);
3828 amodule_unlock (amodule);
3836 /* Special case: wrappers of shared generic methods */
3837 if (m && method->wrapper_type && m->wrapper_type == m->wrapper_type &&
3838 method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
3839 MonoMethod *w1 = mono_marshal_method_from_wrapper (method);
3840 MonoMethod *w2 = mono_marshal_method_from_wrapper (m);
3842 if ((w1 == w2) || (w1->is_inflated && ((MonoMethodInflated *)w1)->declaring == w2)) {
3848 /* Methods decoded needlessly */
3850 //printf ("%d %s %s %p\n", n_extra_decodes, mono_method_full_name (method, TRUE), mono_method_full_name (m, TRUE), orig_p);
3855 entry = &table [next * entry_size];
3864 add_module_cb (gpointer key, gpointer value, gpointer user_data)
3866 g_ptr_array_add ((GPtrArray*)user_data, value);
3872 * Try finding METHOD in the extra_method table in all AOT images.
3873 * Return its method index, or 0xffffff if not found. Set OUT_AMODULE to the AOT
3874 * module where the method was found.
3877 find_aot_method (MonoMethod *method, MonoAotModule **out_amodule)
3882 guint32 hash = mono_aot_method_hash (method);
3884 /* Try the method's module first */
3885 *out_amodule = method->klass->image->aot_module;
3886 index = find_aot_method_in_amodule (method->klass->image->aot_module, method, hash);
3887 if (index != 0xffffff)
3891 * Try all other modules.
3892 * This is needed because generic instances klass->image points to the image
3893 * containing the generic definition, but the native code is generated to the
3894 * AOT image which contains the reference.
3897 /* Make a copy to avoid doing the search inside the aot lock */
3898 modules = g_ptr_array_new ();
3900 g_hash_table_foreach (aot_modules, add_module_cb, modules);
3904 for (i = 0; i < modules->len; ++i) {
3905 MonoAotModule *amodule = g_ptr_array_index (modules, i);
3907 if (amodule != method->klass->image->aot_module)
3908 index = find_aot_method_in_amodule (amodule, method, hash);
3909 if (index != 0xffffff) {
3910 *out_amodule = amodule;
3915 g_ptr_array_free (modules, TRUE);
3921 mono_aot_find_method_index (MonoMethod *method)
3923 MonoAotModule *out_amodule;
3924 return find_aot_method (method, &out_amodule);
3928 init_llvm_method (MonoAotModule *amodule, guint32 method_index, MonoMethod *method, MonoClass *init_class, MonoGenericContext *context)
3930 MonoDomain *domain = mono_domain_get ();
3933 gboolean from_plt = method == NULL;
3934 int pindex, n_patches;
3936 MonoJitInfo *jinfo = NULL;
3937 guint8 *code, *info;
3939 code = amodule->methods [method_index];
3940 info = &amodule->blob [mono_aot_get_offset (amodule->method_info_offsets, method_index)];
3945 klass = method->klass;
3946 decode_klass_ref (amodule, p, &p);
3948 klass = decode_klass_ref (amodule, p, &p);
3951 n_patches = decode_value (p, &p);
3954 MonoJumpInfo *patches;
3959 mp = mono_mempool_new ();
3961 if ((gpointer)code >= amodule->info.jit_code_start && (gpointer)code <= amodule->info.jit_code_end) {
3966 got = amodule->llvm_got;
3970 patches = load_patch_info (amodule, mp, n_patches, llvm, &got_slots, p, &p);
3971 if (patches == NULL) {
3972 mono_mempool_destroy (mp);
3976 for (pindex = 0; pindex < n_patches; ++pindex) {
3977 MonoJumpInfo *ji = &patches [pindex];
3981 * For SFLDA, we need to call resolve_patch_target () since the GOT slot could have
3982 * been initialized by load_method () for a static cctor before the cctor has
3983 * finished executing (#23242).
3985 if (!got [got_slots [pindex]] || ji->type == MONO_PATCH_INFO_SFLDA) {
3986 /* In llvm-only made, we might encounter shared methods */
3987 if (mono_llvm_only && ji->type == MONO_PATCH_INFO_METHOD && mono_method_check_context_used (ji->data.method)) {
3991 ji->data.method = mono_class_inflate_generic_method_checked (ji->data.method, context, &error);
3993 /* This cannot be resolved in mono_resolve_patch_target () */
3994 if (ji->type == MONO_PATCH_INFO_AOT_JIT_INFO) {
3995 // FIXME: Lookup using the index
3996 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
3997 ji->type = MONO_PATCH_INFO_ABS;
3998 ji->data.target = jinfo;
4000 addr = mono_resolve_patch_target (method, domain, code, ji, TRUE);
4001 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
4002 addr = mono_create_ftnptr (domain, addr);
4003 mono_memory_barrier ();
4004 got [got_slots [pindex]] = addr;
4005 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
4006 register_jump_target_got_slot (domain, ji->data.method, &(got [got_slots [pindex]]));
4008 ji->type = MONO_PATCH_INFO_NONE;
4013 mono_mempool_destroy (mp);
4016 if (mini_get_debug_options ()->load_aot_jit_info_eagerly)
4017 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
4020 mono_runtime_class_init (mono_class_vtable (domain, init_class));
4021 else if (from_plt && klass && !klass->generic_container)
4022 mono_runtime_class_init (mono_class_vtable (domain, klass));
4034 mono_aot_init_llvm_method (gpointer aot_module, guint32 method_index)
4036 MonoAotModule *amodule = aot_module;
4039 // FIXME: Handle failure
4040 res = init_llvm_method (amodule, method_index, NULL, NULL, NULL);
4045 mono_aot_init_gshared_method_this (gpointer aot_module, guint32 method_index, MonoObject *this)
4047 MonoAotModule *amodule = aot_module;
4050 MonoGenericContext *context;
4055 klass = this->vtable->klass;
4057 amodule_lock (amodule);
4058 method = g_hash_table_lookup (amodule->extra_methods, GUINT_TO_POINTER (method_index));
4059 amodule_unlock (amodule);
4062 context = mono_method_get_context (method);
4065 res = init_llvm_method (amodule, method_index, NULL, klass, context);
4070 mono_aot_init_gshared_method_rgctx (gpointer aot_module, guint32 method_index, MonoMethodRuntimeGenericContext *rgctx)
4072 MonoAotModule *amodule = aot_module;
4074 MonoGenericContext context = { NULL, NULL };
4075 MonoClass *klass = rgctx->class_vtable->klass;
4077 if (klass->generic_class)
4078 context.class_inst = klass->generic_class->context.class_inst;
4079 else if (klass->generic_container)
4080 context.class_inst = klass->generic_container->context.class_inst;
4081 context.method_inst = rgctx->method_inst;
4083 res = init_llvm_method (amodule, method_index, NULL, rgctx->class_vtable->klass, &context);
4088 * mono_aot_get_method:
4090 * Return a pointer to the AOTed native code for METHOD if it can be found,
4092 * On platforms with function pointers, this doesn't return a function pointer.
4095 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
4097 MonoClass *klass = method->klass;
4098 MonoMethod *orig_method = method;
4099 guint32 method_index;
4100 MonoAotModule *amodule = klass->image->aot_module;
4102 gboolean cache_result = FALSE;
4104 if (domain != mono_get_root_domain ())
4105 /* Non shared AOT code can't be used in other appdomains */
4108 if (enable_aot_cache && !amodule && domain->entry_assembly && klass->image == mono_defaults.corlib) {
4109 /* This cannot be AOTed during startup, so do it now */
4110 if (!mscorlib_aot_loaded) {
4111 mscorlib_aot_loaded = TRUE;
4112 load_aot_module (klass->image->assembly, NULL);
4113 amodule = klass->image->aot_module;
4120 if (amodule->out_of_date)
4123 if ((method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
4124 (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
4125 (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
4126 (method->flags & METHOD_ATTRIBUTE_ABSTRACT))
4130 * Use the original method instead of its invoke-with-check wrapper.
4131 * This is not a problem when using full-aot, since it doesn't support
4134 if (mono_aot_only && method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)
4135 return mono_aot_get_method (domain, mono_marshal_method_from_wrapper (method));
4137 g_assert (klass->inited);
4139 /* Find method index */
4140 method_index = 0xffffff;
4141 if (method->is_inflated && !method->wrapper_type && mono_method_is_generic_sharable_full (method, TRUE, FALSE, FALSE)) {
4142 MonoMethod *orig_method = method;
4144 * For generic methods, we store the fully shared instance in place of the
4147 method = mono_method_get_declaring_generic_method (method);
4148 method_index = mono_metadata_token_index (method->token) - 1;
4150 if (mono_llvm_only) {
4151 /* Needed by mono_aot_init_gshared_method_this () */
4152 /* orig_method is a random instance but it is enough to make init_llvm_method () work */
4153 amodule_lock (amodule);
4154 g_hash_table_insert (amodule->extra_methods, GUINT_TO_POINTER (method_index), orig_method);
4155 amodule_unlock (amodule);
4157 } else if (method->is_inflated || !method->token) {
4158 /* This hash table is used to avoid the slower search in the extra_method_table in the AOT image */
4159 amodule_lock (amodule);
4160 code = g_hash_table_lookup (amodule->method_to_code, method);
4161 amodule_unlock (amodule);
4165 cache_result = TRUE;
4166 method_index = find_aot_method (method, &amodule);
4168 * Special case the ICollection<T> wrappers for arrays, as they cannot
4169 * be statically enumerated, and each wrapper ends up calling the same
4172 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED && method->klass->rank && strstr (method->name, "System.Collections.Generic")) {
4173 MonoMethod *m = mono_aot_get_array_helper_from_wrapper (method);
4175 code = mono_aot_get_method (domain, m);
4181 * Special case Array.GetGenericValueImpl which is a generic icall.
4182 * Generic sharing currently can't handle it, but the icall returns data using
4183 * an out parameter, so the managed-to-native wrappers can share the same code.
4185 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass == mono_defaults.array_class && !strcmp (method->name, "GetGenericValueImpl")) {
4188 MonoGenericContext ctx;
4189 MonoType *args [16];
4191 if (mono_method_signature (method)->params [1]->type == MONO_TYPE_OBJECT)
4192 /* Avoid recursion */
4195 m = mono_class_get_method_from_name (mono_defaults.array_class, "GetGenericValueImpl", 2);
4198 memset (&ctx, 0, sizeof (ctx));
4199 args [0] = &mono_defaults.object_class->byval_arg;
4200 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
4202 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method_checked (m, &ctx, &error), TRUE, TRUE);
4203 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
4206 * Get the code for the <object> instantiation which should be emitted into
4207 * the mscorlib aot image by the AOT compiler.
4209 code = mono_aot_get_method (domain, m);
4214 /* Same for CompareExchange<T> and Exchange<T> */
4215 /* Same for Volatile.Read<T>/Write<T> */
4216 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass->image == mono_defaults.corlib &&
4217 ((!strcmp (method->klass->name_space, "System.Threading") && !strcmp (method->klass->name, "Interlocked") && (!strcmp (method->name, "CompareExchange") || !strcmp (method->name, "Exchange")) && MONO_TYPE_IS_REFERENCE (mini_type_get_underlying_type (mono_method_signature (method)->params [1]))) ||
4218 (!strcmp (method->klass->name_space, "System.Threading") && !strcmp (method->klass->name, "Volatile") && (!strcmp (method->name, "Read") && MONO_TYPE_IS_REFERENCE (mini_type_get_underlying_type (mono_method_signature (method)->ret)))) ||
4219 (!strcmp (method->klass->name_space, "System.Threading") && !strcmp (method->klass->name, "Volatile") && (!strcmp (method->name, "Write") && MONO_TYPE_IS_REFERENCE (mini_type_get_underlying_type (mono_method_signature (method)->params [1])))))) {
4222 MonoGenericContext ctx;
4223 MonoType *args [16];
4224 gpointer iter = NULL;
4226 while ((m = mono_class_get_methods (method->klass, &iter))) {
4227 if (mono_method_signature (m)->generic_param_count && !strcmp (m->name, method->name))
4232 memset (&ctx, 0, sizeof (ctx));
4233 args [0] = &mono_defaults.object_class->byval_arg;
4234 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
4236 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method_checked (m, &ctx, &error), TRUE, TRUE);
4237 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
4239 /* Avoid recursion */
4244 * Get the code for the <object> instantiation which should be emitted into
4245 * the mscorlib aot image by the AOT compiler.
4247 code = mono_aot_get_method (domain, m);
4252 /* For ARRAY_ACCESSOR wrappers with reference types, use the <object> instantiation saved in corlib */
4253 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_UNKNOWN) {
4254 WrapperInfo *info = mono_marshal_get_wrapper_info (method);
4256 if (info->subtype == WRAPPER_SUBTYPE_ARRAY_ACCESSOR) {
4257 MonoMethod *array_method = info->d.array_accessor.method;
4258 if (MONO_TYPE_IS_REFERENCE (&array_method->klass->element_class->byval_arg)) {
4259 MonoClass *obj_array_class = mono_array_class_get (mono_defaults.object_class, 1);
4260 MonoMethod *m = mono_class_get_method_from_name (obj_array_class, array_method->name, mono_method_signature (array_method)->param_count);
4263 m = mono_marshal_get_array_accessor_wrapper (m);
4265 code = mono_aot_get_method (domain, m);
4273 if (method_index == 0xffffff && method->is_inflated && mono_method_is_generic_sharable_full (method, FALSE, TRUE, FALSE)) {
4274 /* Partial sharing */
4277 shared = mini_get_shared_method (method);
4278 method_index = find_aot_method (shared, &amodule);
4279 if (method_index != 0xffffff)
4283 if (method_index == 0xffffff && method->is_inflated && mono_method_is_generic_sharable_full (method, FALSE, FALSE, TRUE)) {
4285 /* Use the all-vt shared method since this is what was AOTed */
4286 method_index = find_aot_method (mini_get_shared_method_full (method, TRUE, TRUE), &amodule);
4287 if (method_index != 0xffffff)
4288 method = mini_get_shared_method_full (method, TRUE, FALSE);
4291 if (method_index == 0xffffff) {
4292 if (mono_aot_only && mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
4295 full_name = mono_method_full_name (method, TRUE);
4296 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.", full_name);
4302 if (method_index == 0xffffff)
4305 /* Needed by find_jit_info */
4306 amodule_lock (amodule);
4307 g_hash_table_insert (amodule->extra_methods, GUINT_TO_POINTER (method_index), method);
4308 amodule_unlock (amodule);
4311 method_index = mono_metadata_token_index (method->token) - 1;
4314 code = load_method (domain, amodule, klass->image, method, method->token, method_index);
4315 if (code && cache_result) {
4316 amodule_lock (amodule);
4317 g_hash_table_insert (amodule->method_to_code, orig_method, code);
4318 amodule_unlock (amodule);
4324 * Same as mono_aot_get_method, but we try to avoid loading any metadata from the
4328 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
4330 MonoAotModule *aot_module = image->aot_module;
4336 method_index = mono_metadata_token_index (token) - 1;
4338 return load_method (domain, aot_module, image, NULL, token, method_index);
4344 } IsGotEntryUserData;
4347 check_is_got_entry (gpointer key, gpointer value, gpointer user_data)
4349 IsGotEntryUserData *data = (IsGotEntryUserData*)user_data;
4350 MonoAotModule *aot_module = (MonoAotModule*)value;
4352 if (aot_module->got && (data->addr >= (guint8*)(aot_module->got)) && (data->addr < (guint8*)(aot_module->got + aot_module->info.got_size)))
4357 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
4359 IsGotEntryUserData user_data;
4364 user_data.addr = addr;
4365 user_data.res = FALSE;
4367 g_hash_table_foreach (aot_modules, check_is_got_entry, &user_data);
4370 return user_data.res;
4375 MonoAotModule *module;
4376 } FindAotModuleUserData;
4379 find_aot_module_cb (gpointer key, gpointer value, gpointer user_data)
4381 FindAotModuleUserData *data = (FindAotModuleUserData*)user_data;
4382 MonoAotModule *aot_module = (MonoAotModule*)value;
4384 if (amodule_contains_code_addr (aot_module, data->addr))
4385 data->module = aot_module;
4388 static inline MonoAotModule*
4389 find_aot_module (guint8 *code)
4391 FindAotModuleUserData user_data;
4396 /* Reading these need no locking */
4397 if (((gsize)code < aot_code_low_addr) || ((gsize)code > aot_code_high_addr))
4400 user_data.addr = code;
4401 user_data.module = NULL;
4404 g_hash_table_foreach (aot_modules, find_aot_module_cb, &user_data);
4407 return user_data.module;
4411 mono_aot_patch_plt_entry (guint8 *code, guint8 *plt_entry, gpointer *got, mgreg_t *regs, guint8 *addr)
4413 MonoAotModule *amodule;
4416 * Since AOT code is only used in the root domain,
4417 * mono_domain_get () != mono_get_root_domain () means the calling method
4418 * is AppDomain:InvokeInDomain, so this is the same check as in
4419 * mono_method_same_domain () but without loading the metadata for the method.
4421 if (mono_domain_get () == mono_get_root_domain ()) {
4423 amodule = find_aot_module (code);
4427 mono_arch_patch_plt_entry (plt_entry, got, regs, addr);
4432 * mono_aot_plt_resolve:
4434 * This function is called by the entries in the PLT to resolve the actual method that
4435 * needs to be called. It returns a trampoline to the method and patches the PLT entry.
4436 * Returns NULL if the something cannot be loaded.
4439 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
4441 #ifdef MONO_ARCH_AOT_SUPPORTED
4442 guint8 *p, *target, *plt_entry;
4444 MonoAotModule *module = (MonoAotModule*)aot_module;
4445 gboolean res, no_ftnptr = FALSE;
4447 gboolean using_gsharedvt = FALSE;
4449 //printf ("DYN: %p %d\n", aot_module, plt_info_offset);
4451 p = &module->blob [plt_info_offset];
4453 ji.type = decode_value (p, &p);
4455 mp = mono_mempool_new ();
4456 res = decode_patch (module, mp, &ji, p, &p);
4459 mono_mempool_destroy (mp);
4463 #ifdef MONO_ARCH_GSHAREDVT_SUPPORTED
4464 using_gsharedvt = TRUE;
4468 * Avoid calling resolve_patch_target in the full-aot case if possible, since
4469 * it would create a trampoline, and we don't need that.
4470 * We could do this only if the method does not need the special handling
4471 * in mono_magic_trampoline ().
4473 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) &&
4474 !mono_method_needs_static_rgctx_invoke (ji.data.method, FALSE) && !using_gsharedvt) {
4475 target = mono_jit_compile_method (ji.data.method);
4478 target = mono_resolve_patch_target (NULL, mono_domain_get (), NULL, &ji, TRUE);
4482 * The trampoline expects us to return a function descriptor on platforms which use
4483 * it, but resolve_patch_target returns a direct function pointer for some type of
4484 * patches, so have to translate between the two.
4485 * FIXME: Clean this up, but how ?
4487 if (ji.type == MONO_PATCH_INFO_ABS || ji.type == MONO_PATCH_INFO_INTERNAL_METHOD || ji.type == MONO_PATCH_INFO_ICALL_ADDR || ji.type == MONO_PATCH_INFO_JIT_ICALL_ADDR || ji.type == MONO_PATCH_INFO_RGCTX_FETCH) {
4488 /* These should already have a function descriptor */
4489 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
4490 /* Our function descriptors have a 0 environment, gcc created ones don't */
4491 if (ji.type != MONO_PATCH_INFO_INTERNAL_METHOD && ji.type != MONO_PATCH_INFO_JIT_ICALL_ADDR && ji.type != MONO_PATCH_INFO_ICALL_ADDR)
4492 g_assert (((gpointer*)target) [2] == 0);
4495 } else if (!no_ftnptr) {
4496 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
4497 g_assert (((gpointer*)target) [2] != 0);
4499 target = mono_create_ftnptr (mono_domain_get (), target);
4502 mono_mempool_destroy (mp);
4504 /* Patch the PLT entry with target which might be the actual method not a trampoline */
4505 plt_entry = mono_aot_get_plt_entry (code);
4506 g_assert (plt_entry);
4507 mono_aot_patch_plt_entry (code, plt_entry, module->got, NULL, target);
4511 g_assert_not_reached ();
4519 * Initialize the PLT table of the AOT module. Called lazily when the first AOT
4520 * method in the module is loaded to avoid committing memory by writing to it.
4521 * LOCKING: Assumes the AMODULE lock is held.
4524 init_plt (MonoAotModule *amodule)
4529 if (amodule->plt_inited)
4532 if (amodule->info.plt_size <= 1) {
4533 amodule->plt_inited = TRUE;
4537 tramp = mono_create_specific_trampoline (amodule, MONO_TRAMPOLINE_AOT_PLT, mono_get_root_domain (), NULL);
4540 * Initialize the PLT entries in the GOT to point to the default targets.
4543 tramp = mono_create_ftnptr (mono_domain_get (), tramp);
4544 for (i = 1; i < amodule->info.plt_size; ++i)
4545 /* All the default entries point to the AOT trampoline */
4546 ((gpointer*)amodule->got)[amodule->info.plt_got_offset_base + i] = tramp;
4548 amodule->plt_inited = TRUE;
4552 * mono_aot_get_plt_entry:
4554 * Return the address of the PLT entry called by the code at CODE if exists.
4557 mono_aot_get_plt_entry (guint8 *code)
4559 MonoAotModule *amodule = find_aot_module (code);
4560 guint8 *target = NULL;
4566 if (is_thumb_code (amodule, code))
4567 return mono_arm_get_thumb_plt_entry (code);
4570 #ifdef MONO_ARCH_AOT_SUPPORTED
4571 target = mono_arch_get_call_target (code);
4573 g_assert_not_reached ();
4577 while (target != NULL) {
4578 if ((target >= (guint8*)(amodule->plt)) && (target < (guint8*)(amodule->plt_end)))
4581 // Add 4 since mono_arch_get_call_target assumes we're passing
4582 // the instruction after the actual branch instruction.
4583 target = mono_arch_get_call_target (target + 4);
4588 if ((target >= (guint8*)(amodule->plt)) && (target < (guint8*)(amodule->plt_end)))
4596 * mono_aot_get_plt_info_offset:
4598 * Return the PLT info offset belonging to the plt entry called by CODE.
4601 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
4603 guint8 *plt_entry = mono_aot_get_plt_entry (code);
4605 g_assert (plt_entry);
4607 /* The offset is embedded inside the code after the plt entry */
4608 #ifdef MONO_ARCH_AOT_SUPPORTED
4609 return mono_arch_get_plt_info_offset (plt_entry, regs, code);
4611 g_assert_not_reached ();
4617 mono_create_ftnptr_malloc (guint8 *code)
4619 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
4620 MonoPPCFunctionDescriptor *ftnptr = g_malloc0 (sizeof (MonoPPCFunctionDescriptor));
4622 ftnptr->code = code;
4633 * mono_aot_register_jit_icall:
4635 * Register a JIT icall which is called by trampolines in full-aot mode. This should
4636 * be called from mono_arch_init () during startup.
4639 mono_aot_register_jit_icall (const char *name, gpointer addr)
4641 /* No need for locking */
4642 if (!aot_jit_icall_hash)
4643 aot_jit_icall_hash = g_hash_table_new (g_str_hash, g_str_equal);
4644 g_hash_table_insert (aot_jit_icall_hash, (char*)name, addr);
4648 * load_function_full:
4650 * Load the function named NAME from the aot image.
4653 load_function_full (MonoAotModule *amodule, const char *name, MonoTrampInfo **out_tinfo)
4657 int n_patches, pindex;
4660 guint32 info_offset;
4664 symbol = g_strdup_printf ("%s", name);
4665 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&code);
4668 g_error ("Symbol '%s' not found in AOT file '%s'.\n", name, amodule->aot_name);
4670 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT: FOUND function '%s' in AOT file '%s'.", name, amodule->aot_name);
4674 symbol = g_strdup_printf ("%s_p", name);
4675 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&p);
4678 /* Nothing to patch */
4681 info_offset = *(guint32*)p;
4683 MonoTrampInfo *tinfo;
4684 guint32 code_size, uw_info_len, uw_offset;
4686 /* Construct a MonoTrampInfo from the data in the AOT image */
4688 p += sizeof (guint32);
4689 code_size = *(guint32*)p;
4690 p += sizeof (guint32);
4691 uw_offset = *(guint32*)p;
4692 uw_info = amodule->unwind_info + uw_offset;
4693 uw_info_len = decode_value (uw_info, &uw_info);
4695 tinfo = g_new0 (MonoTrampInfo, 1);
4697 tinfo->code_size = code_size;
4698 tinfo->uw_info = uw_info;
4699 tinfo->uw_info_len = uw_info_len;
4704 p = amodule->blob + info_offset;
4706 /* Similar to mono_aot_load_method () */
4708 n_patches = decode_value (p, &p);
4711 MonoJumpInfo *patches;
4714 mp = mono_mempool_new ();
4716 patches = load_patch_info (amodule, mp, n_patches, FALSE, &got_slots, p, &p);
4719 for (pindex = 0; pindex < n_patches; ++pindex) {
4720 MonoJumpInfo *ji = &patches [pindex];
4723 if (amodule->got [got_slots [pindex]])
4727 * When this code is executed, the runtime may not be initalized yet, so
4728 * resolve the patch info by hand.
4730 if (ji->type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
4731 if (!strcmp (ji->data.name, "mono_get_lmf_addr")) {
4732 target = mono_get_lmf_addr;
4733 } else if (!strcmp (ji->data.name, "mono_thread_force_interruption_checkpoint")) {
4734 target = mono_thread_force_interruption_checkpoint;
4735 } else if (!strcmp (ji->data.name, "mono_exception_from_token")) {
4736 target = mono_exception_from_token;
4737 } else if (!strcmp (ji->data.name, "mono_throw_exception")) {
4738 target = mono_get_throw_exception ();
4739 } else if (strstr (ji->data.name, "trampoline_func_") == ji->data.name) {
4740 int tramp_type2 = atoi (ji->data.name + strlen ("trampoline_func_"));
4741 target = (gpointer)mono_get_trampoline_func (tramp_type2);
4742 } else if (strstr (ji->data.name, "specific_trampoline_lazy_fetch_") == ji->data.name) {
4743 /* atoll is needed because the the offset is unsigned */
4747 res = sscanf (ji->data.name, "specific_trampoline_lazy_fetch_%u", &slot);
4748 g_assert (res == 1);
4749 target = mono_create_specific_trampoline (GUINT_TO_POINTER (slot), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, mono_get_root_domain (), NULL);
4750 target = mono_create_ftnptr_malloc (target);
4751 } else if (!strcmp (ji->data.name, "mono_thread_get_and_clear_pending_exception")) {
4752 target = mono_thread_get_and_clear_pending_exception;
4753 } else if (!strcmp (ji->data.name, "debugger_agent_single_step_from_context")) {
4754 target = debugger_agent_single_step_from_context;
4755 } else if (!strcmp (ji->data.name, "debugger_agent_breakpoint_from_context")) {
4756 target = debugger_agent_breakpoint_from_context;
4757 } else if (strstr (ji->data.name, "generic_trampoline_")) {
4758 target = mono_aot_get_trampoline (ji->data.name);
4759 } else if (aot_jit_icall_hash && g_hash_table_lookup (aot_jit_icall_hash, ji->data.name)) {
4760 /* Registered by mono_arch_init () */
4761 target = g_hash_table_lookup (aot_jit_icall_hash, ji->data.name);
4763 fprintf (stderr, "Unknown relocation '%s'\n", ji->data.name);
4764 g_assert_not_reached ();
4768 /* Hopefully the code doesn't have patches which need method or
4771 target = mono_resolve_patch_target (NULL, NULL, code, ji, FALSE);
4775 amodule->got [got_slots [pindex]] = target;
4780 mono_mempool_destroy (mp);
4787 load_function (MonoAotModule *amodule, const char *name)
4789 return load_function_full (amodule, name, NULL);
4792 static MonoAotModule*
4793 get_mscorlib_aot_module (void)
4796 MonoAotModule *amodule;
4798 image = mono_defaults.corlib;
4800 amodule = image->aot_module;
4802 amodule = mscorlib_aot_module;
4808 no_trampolines (void)
4810 g_assert_not_reached ();
4814 * Return the trampoline identified by NAME from the mscorlib AOT file.
4815 * On ppc64, this returns a function descriptor.
4818 mono_aot_get_trampoline_full (const char *name, MonoTrampInfo **out_tinfo)
4820 MonoAotModule *amodule = get_mscorlib_aot_module ();
4822 if (mono_llvm_only) {
4824 return no_trampolines;
4827 return mono_create_ftnptr_malloc (load_function_full (amodule, name, out_tinfo));
4831 mono_aot_get_trampoline (const char *name)
4833 MonoTrampInfo *out_tinfo;
4836 code = mono_aot_get_trampoline_full (name, &out_tinfo);
4837 mono_tramp_info_register (out_tinfo, NULL);
4843 read_unwind_info (MonoAotModule *amodule, MonoTrampInfo *info, const char *symbol_name)
4845 gpointer symbol_addr;
4846 guint32 uw_offset, uw_info_len;
4849 find_symbol (amodule->sofile, amodule->globals, symbol_name, &symbol_addr);
4854 uw_offset = *(guint32*)symbol_addr;
4855 uw_info = amodule->unwind_info + uw_offset;
4856 uw_info_len = decode_value (uw_info, &uw_info);
4858 info->uw_info = uw_info;
4859 info->uw_info_len = uw_info_len;
4861 /* If successful return the address of the following data */
4862 return (guint32*)symbol_addr + 1;
4866 #include <mach/mach.h>
4868 static TrampolinePage* trampoline_pages [MONO_AOT_TRAMP_NUM];
4871 read_page_trampoline_uwinfo (MonoTrampInfo *info, int tramp_type, gboolean is_generic)
4873 char symbol_name [128];
4875 if (tramp_type == MONO_AOT_TRAMP_SPECIFIC)
4876 sprintf (symbol_name, "specific_trampolines_page_%s_p", is_generic ? "gen" : "sp");
4877 else if (tramp_type == MONO_AOT_TRAMP_STATIC_RGCTX)
4878 sprintf (symbol_name, "rgctx_trampolines_page_%s_p", is_generic ? "gen" : "sp");
4879 else if (tramp_type == MONO_AOT_TRAMP_IMT_THUNK)
4880 sprintf (symbol_name, "imt_trampolines_page_%s_p", is_generic ? "gen" : "sp");
4881 else if (tramp_type == MONO_AOT_TRAMP_GSHAREDVT_ARG)
4882 sprintf (symbol_name, "gsharedvt_trampolines_page_%s_p", is_generic ? "gen" : "sp");
4884 g_assert_not_reached ();
4886 read_unwind_info (mono_defaults.corlib->aot_module, info, symbol_name);
4889 static unsigned char*
4890 get_new_trampoline_from_page (int tramp_type)
4892 MonoAotModule *amodule;
4894 TrampolinePage *page;
4897 vm_address_t addr, taddr;
4899 vm_prot_t prot, max_prot;
4900 int psize, specific_trampoline_size;
4901 unsigned char *code;
4903 specific_trampoline_size = 2 * sizeof (gpointer);
4905 mono_aot_page_lock ();
4906 page = trampoline_pages [tramp_type];
4907 if (page && page->trampolines < page->trampolines_end) {
4908 code = page->trampolines;
4909 page->trampolines += specific_trampoline_size;
4910 mono_aot_page_unlock ();
4913 mono_aot_page_unlock ();
4914 /* the trampoline template page is in the mscorlib module */
4915 image = mono_defaults.corlib;
4918 psize = MONO_AOT_TRAMP_PAGE_SIZE;
4920 amodule = image->aot_module;
4923 if (tramp_type == MONO_AOT_TRAMP_SPECIFIC)
4924 tpage = load_function (amodule, "specific_trampolines_page");
4925 else if (tramp_type == MONO_AOT_TRAMP_STATIC_RGCTX)
4926 tpage = load_function (amodule, "rgctx_trampolines_page");
4927 else if (tramp_type == MONO_AOT_TRAMP_IMT_THUNK)
4928 tpage = load_function (amodule, "imt_trampolines_page");
4929 else if (tramp_type == MONO_AOT_TRAMP_GSHAREDVT_ARG)
4930 tpage = load_function (amodule, "gsharedvt_arg_trampolines_page");
4932 g_error ("Incorrect tramp type for trampolines page");
4934 /*g_warning ("loaded trampolines page at %x", tpage);*/
4936 /* avoid the unlikely case of looping forever */
4939 while (page == NULL && count-- > 0) {
4940 MonoTrampInfo *gen_info, *sp_info;
4943 /* allocate two contiguous pages of memory: the first page will contain the data (like a local constant pool)
4944 * while the second will contain the trampolines.
4946 ret = vm_allocate (mach_task_self (), &addr, psize * 2, VM_FLAGS_ANYWHERE);
4947 if (ret != KERN_SUCCESS) {
4948 g_error ("Cannot allocate memory for trampolines: %d", ret);
4951 /*g_warning ("allocated trampoline double page at %x", addr);*/
4952 /* replace the second page with a remapped trampoline page */
4953 taddr = addr + psize;
4954 vm_deallocate (mach_task_self (), taddr, psize);
4955 ret = vm_remap (mach_task_self (), &taddr, psize, 0, FALSE, mach_task_self(), (vm_address_t)tpage, FALSE, &prot, &max_prot, VM_INHERIT_SHARE);
4956 if (ret != KERN_SUCCESS) {
4957 /* someone else got the page, try again */
4958 vm_deallocate (mach_task_self (), addr, psize);
4961 /*g_warning ("remapped trampoline page at %x", taddr);*/
4963 mono_aot_page_lock ();
4964 page = trampoline_pages [tramp_type];
4965 /* some other thread already allocated, so use that to avoid wasting memory */
4966 if (page && page->trampolines < page->trampolines_end) {
4967 code = page->trampolines;
4968 page->trampolines += specific_trampoline_size;
4969 mono_aot_page_unlock ();
4970 vm_deallocate (mach_task_self (), addr, psize);
4971 vm_deallocate (mach_task_self (), taddr, psize);
4974 page = (TrampolinePage*)addr;
4975 page->next = trampoline_pages [tramp_type];
4976 trampoline_pages [tramp_type] = page;
4977 page->trampolines = (void*)(taddr + amodule->info.tramp_page_code_offsets [tramp_type]);
4978 page->trampolines_end = (void*)(taddr + psize - 64);
4979 code = page->trampolines;
4980 page->trampolines += specific_trampoline_size;
4981 mono_aot_page_unlock ();
4983 /* Register the generic part at the beggining of the trampoline page */
4984 gen_info = mono_tramp_info_create (NULL, (guint8*)taddr, amodule->info.tramp_page_code_offsets [tramp_type], NULL, NULL);
4985 read_page_trampoline_uwinfo (gen_info, tramp_type, TRUE);
4986 mono_tramp_info_register (gen_info, NULL);
4989 * Registering each specific trampoline produces a lot of
4990 * MonoJitInfo structures. Jump trampolines are also registered
4993 if (tramp_type != MONO_AOT_TRAMP_SPECIFIC) {
4994 /* Register the rest of the page as a single trampoline */
4995 sp_info = mono_tramp_info_create (NULL, code, page->trampolines_end - code, NULL, NULL);
4996 read_page_trampoline_uwinfo (sp_info, tramp_type, FALSE);
4997 mono_tramp_info_register (sp_info, NULL);
5001 g_error ("Cannot allocate more trampoline pages: %d", ret);
5006 static unsigned char*
5007 get_new_trampoline_from_page (int tramp_type)
5009 g_error ("Page trampolines not supported.");
5016 get_new_specific_trampoline_from_page (gpointer tramp, gpointer arg)
5021 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_SPECIFIC);
5023 data = (gpointer*)((char*)code - MONO_AOT_TRAMP_PAGE_SIZE);
5026 /*g_warning ("new trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
5032 get_new_rgctx_trampoline_from_page (gpointer tramp, gpointer arg)
5037 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_STATIC_RGCTX);
5039 data = (gpointer*)((char*)code - MONO_AOT_TRAMP_PAGE_SIZE);
5042 /*g_warning ("new rgctx trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
5048 get_new_imt_trampoline_from_page (gpointer arg)
5053 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_IMT_THUNK);
5055 data = (gpointer*)((char*)code - MONO_AOT_TRAMP_PAGE_SIZE);
5057 /*g_warning ("new imt trampoline at %p for data %p, (stored at %p)", code, arg, data);*/
5063 get_new_gsharedvt_arg_trampoline_from_page (gpointer tramp, gpointer arg)
5068 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_GSHAREDVT_ARG);
5070 data = (gpointer*)((char*)code - MONO_AOT_TRAMP_PAGE_SIZE);
5073 /*g_warning ("new rgctx trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
5077 /* Return a given kind of trampoline */
5078 /* FIXME set unwind info for these trampolines */
5080 get_numerous_trampoline (MonoAotTrampoline tramp_type, int n_got_slots, MonoAotModule **out_amodule, guint32 *got_offset, guint32 *out_tramp_size)
5083 MonoAotModule *amodule = get_mscorlib_aot_module ();
5084 int index, tramp_size;
5086 /* Currently, we keep all trampolines in the mscorlib AOT image */
5087 image = mono_defaults.corlib;
5089 *out_amodule = amodule;
5094 #define MONOTOUCH_TRAMPOLINES_ERROR ". See http://docs.xamarin.com/ios/troubleshooting for instructions on how to fix this condition."
5096 #define MONOTOUCH_TRAMPOLINES_ERROR ""
5098 if (amodule->trampoline_index [tramp_type] == amodule->info.num_trampolines [tramp_type]) {
5099 g_error ("Ran out of trampolines of type %d in '%s' (%d)%s\n",
5100 tramp_type, image ? image->name : "mscorlib", amodule->info.num_trampolines [tramp_type], MONOTOUCH_TRAMPOLINES_ERROR);
5102 index = amodule->trampoline_index [tramp_type] ++;
5106 *got_offset = amodule->info.trampoline_got_offset_base [tramp_type] + (index * n_got_slots);
5108 tramp_size = amodule->info.trampoline_size [tramp_type];
5111 *out_tramp_size = tramp_size;
5113 return amodule->trampolines [tramp_type] + (index * tramp_size);
5117 no_specific_trampoline (void)
5119 g_assert_not_reached ();
5123 * Return a specific trampoline from the AOT file.
5126 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
5128 MonoAotModule *amodule;
5129 guint32 got_offset, tramp_size;
5130 guint8 *code, *tramp;
5131 static gpointer generic_trampolines [MONO_TRAMPOLINE_NUM];
5132 static gboolean inited;
5133 static guint32 num_trampolines;
5135 if (mono_llvm_only) {
5137 return no_specific_trampoline;
5144 mono_counters_register ("Specific trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &num_trampolines);
5153 if (!generic_trampolines [tramp_type]) {
5156 symbol = mono_get_generic_trampoline_name (tramp_type);
5157 generic_trampolines [tramp_type] = mono_aot_get_trampoline (symbol);
5161 tramp = generic_trampolines [tramp_type];
5164 if (USE_PAGE_TRAMPOLINES) {
5165 code = get_new_specific_trampoline_from_page (tramp, arg1);
5168 code = get_numerous_trampoline (MONO_AOT_TRAMP_SPECIFIC, 2, &amodule, &got_offset, &tramp_size);
5170 amodule->got [got_offset] = tramp;
5171 amodule->got [got_offset + 1] = arg1;
5175 *code_len = tramp_size;
5181 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
5183 MonoAotModule *amodule;
5187 if (USE_PAGE_TRAMPOLINES) {
5188 code = get_new_rgctx_trampoline_from_page (addr, ctx);
5190 code = get_numerous_trampoline (MONO_AOT_TRAMP_STATIC_RGCTX, 2, &amodule, &got_offset, NULL);
5192 amodule->got [got_offset] = ctx;
5193 amodule->got [got_offset + 1] = addr;
5196 /* The caller expects an ftnptr */
5197 return mono_create_ftnptr (mono_domain_get (), code);
5201 mono_aot_get_unbox_trampoline (MonoMethod *method)
5203 guint32 method_index = mono_metadata_token_index (method->token) - 1;
5204 MonoAotModule *amodule;
5206 guint32 *ut, *ut_end, *entry;
5207 int low, high, entry_index = 0;
5208 gpointer symbol_addr;
5209 MonoTrampInfo *tinfo;
5211 if (method->is_inflated && !mono_method_is_generic_sharable_full (method, FALSE, FALSE, FALSE)) {
5212 method_index = find_aot_method (method, &amodule);
5213 if (method_index == 0xffffff && mono_method_is_generic_sharable_full (method, FALSE, TRUE, FALSE)) {
5214 MonoMethod *shared = mini_get_shared_method_full (method, FALSE, FALSE);
5215 method_index = find_aot_method (shared, &amodule);
5217 if (method_index == 0xffffff && mono_method_is_generic_sharable_full (method, FALSE, TRUE, TRUE)) {
5218 MonoMethod *shared = mini_get_shared_method_full (method, TRUE, TRUE);
5219 method_index = find_aot_method (shared, &amodule);
5221 g_assert (method_index != 0xffffff);
5223 amodule = method->klass->image->aot_module;
5227 if (amodule->info.llvm_get_unbox_tramp) {
5228 gpointer (*get_tramp) (int) = amodule->info.llvm_get_unbox_tramp;
5229 code = get_tramp (method_index);
5235 ut = amodule->unbox_trampolines;
5236 ut_end = amodule->unbox_trampolines_end;
5238 /* Do a binary search in the sorted table */
5241 high = (ut_end - ut);
5242 while (low < high) {
5243 entry_index = (low + high) / 2;
5244 entry = &ut [entry_index];
5245 if (entry [0] < method_index) {
5246 low = entry_index + 1;
5247 } else if (entry [0] > method_index) {
5254 code = get_call_table_entry (amodule->unbox_trampoline_addresses, entry_index);
5257 tinfo = mono_tramp_info_create (NULL, code, 0, NULL, NULL);
5259 symbol_addr = read_unwind_info (amodule, tinfo, "unbox_trampoline_p");
5261 mono_tramp_info_free (tinfo);
5265 tinfo->code_size = *(guint32*)symbol_addr;
5266 mono_tramp_info_register (tinfo, NULL);
5268 /* The caller expects an ftnptr */
5269 return mono_create_ftnptr (mono_domain_get (), code);
5273 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
5277 MonoAotModule *amodule = mono_defaults.corlib->aot_module;
5278 guint32 index = MONO_RGCTX_SLOT_INDEX (slot);
5279 static int count = 0;
5282 if (index >= amodule->info.num_rgctx_fetch_trampolines) {
5283 static gpointer addr;
5287 * Use the general version of the rgctx fetch trampoline. It receives a pair of <slot, trampoline> in the rgctx arg reg.
5290 addr = load_function (amodule, "rgctx_fetch_trampoline_general");
5291 info = mono_domain_alloc0 (mono_get_root_domain (), sizeof (gpointer) * 2);
5292 info [0] = GUINT_TO_POINTER (slot);
5293 info [1] = mono_create_specific_trampoline (GUINT_TO_POINTER (slot), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, mono_get_root_domain (), NULL);
5294 code = mono_aot_get_static_rgctx_trampoline (info, addr);
5295 return mono_create_ftnptr (mono_domain_get (), code);
5298 symbol = mono_get_rgctx_fetch_trampoline_name (slot);
5299 code = load_function (mono_defaults.corlib->aot_module, symbol);
5301 /* The caller expects an ftnptr */
5302 return mono_create_ftnptr (mono_domain_get (), code);
5308 g_assert_not_reached ();
5312 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
5317 int i, index, real_count;
5318 MonoAotModule *amodule;
5321 return no_imt_thunk;
5324 for (i = 0; i < count; ++i) {
5325 MonoIMTCheckItem *item = imt_entries [i];
5327 if (item->is_equals)
5331 /* Save the entries into an array */
5332 buf = mono_domain_alloc (domain, (real_count + 1) * 2 * sizeof (gpointer));
5334 for (i = 0; i < count; ++i) {
5335 MonoIMTCheckItem *item = imt_entries [i];
5337 if (!item->is_equals)
5340 g_assert (item->key);
5342 buf [(index * 2)] = item->key;
5343 if (item->has_target_code) {
5344 gpointer *p = mono_domain_alloc (domain, sizeof (gpointer));
5345 *p = item->value.target_code;
5346 buf [(index * 2) + 1] = p;
5348 buf [(index * 2) + 1] = &(vtable->vtable [item->value.vtable_slot]);
5352 buf [(index * 2)] = NULL;
5353 buf [(index * 2) + 1] = fail_tramp;
5355 if (USE_PAGE_TRAMPOLINES) {
5356 code = get_new_imt_trampoline_from_page (buf);
5358 code = get_numerous_trampoline (MONO_AOT_TRAMP_IMT_THUNK, 1, &amodule, &got_offset, NULL);
5360 amodule->got [got_offset] = buf;
5367 mono_aot_get_gsharedvt_arg_trampoline (gpointer arg, gpointer addr)
5369 MonoAotModule *amodule;
5373 if (USE_PAGE_TRAMPOLINES) {
5374 code = get_new_gsharedvt_arg_trampoline_from_page (addr, arg);
5376 code = get_numerous_trampoline (MONO_AOT_TRAMP_GSHAREDVT_ARG, 2, &amodule, &got_offset, NULL);
5378 amodule->got [got_offset] = arg;
5379 amodule->got [got_offset + 1] = addr;
5382 /* The caller expects an ftnptr */
5383 return mono_create_ftnptr (mono_domain_get (), code);
5387 * mono_aot_set_make_unreadable:
5389 * Set whenever to make all mmaped memory unreadable. In conjuction with a
5390 * SIGSEGV handler, this is useful to find out which pages the runtime tries to read.
5393 mono_aot_set_make_unreadable (gboolean unreadable)
5397 make_unreadable = unreadable;
5399 if (make_unreadable && !inited) {
5400 mono_counters_register ("AOT: pagefaults", MONO_COUNTER_JIT | MONO_COUNTER_INT, &n_pagefaults);
5405 MonoAotModule *module;
5410 find_map (gpointer key, gpointer value, gpointer user_data)
5412 MonoAotModule *module = (MonoAotModule*)value;
5413 FindMapUserData *data = (FindMapUserData*)user_data;
5416 if ((data->ptr >= module->mem_begin) && (data->ptr < module->mem_end))
5417 data->module = module;
5420 static MonoAotModule*
5421 find_module_for_addr (void *ptr)
5423 FindMapUserData data;
5425 if (!make_unreadable)
5429 data.ptr = (guint8*)ptr;
5432 g_hash_table_foreach (aot_modules, (GHFunc)find_map, &data);
5439 * mono_aot_is_pagefault:
5441 * Should be called from a SIGSEGV signal handler to find out whenever @ptr is
5442 * within memory allocated by this module.
5445 mono_aot_is_pagefault (void *ptr)
5447 if (!make_unreadable)
5451 * Not signal safe, but SIGSEGV's are synchronous, and
5452 * this is only turned on by a MONO_DEBUG option.
5454 return find_module_for_addr (ptr) != NULL;
5458 * mono_aot_handle_pagefault:
5460 * Handle a pagefault caused by an unreadable page by making it readable again.
5463 mono_aot_handle_pagefault (void *ptr)
5465 #ifndef PLATFORM_WIN32
5466 guint8* start = (guint8*)ROUND_DOWN (((gssize)ptr), mono_pagesize ());
5470 res = mono_mprotect (start, mono_pagesize (), MONO_MMAP_READ|MONO_MMAP_WRITE|MONO_MMAP_EXEC);
5471 g_assert (res == 0);
5482 mono_aot_init (void)
5487 mono_aot_cleanup (void)
5492 mono_aot_find_method_index (MonoMethod *method)
5494 g_assert_not_reached ();
5499 mono_aot_init_llvm_method (gpointer aot_module, guint32 method_index)
5504 mono_aot_init_gshared_method_this (gpointer aot_module, guint32 method_index, MonoObject *this)
5509 mono_aot_init_gshared_method_rgctx (gpointer aot_module, guint32 method_index, MonoMethodRuntimeGenericContext *rgctx)
5514 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
5520 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
5526 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
5532 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
5538 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
5544 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
5550 mono_aot_get_plt_entry (guint8 *code)
5556 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
5562 mono_aot_patch_plt_entry (guint8 *code, guint8 *plt_entry, gpointer *got, mgreg_t *regs, guint8 *addr)
5567 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
5573 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
5575 g_assert_not_reached ();
5581 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
5583 g_assert_not_reached ();
5588 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
5590 g_assert_not_reached ();
5595 mono_aot_get_trampoline_full (const char *name, MonoTrampInfo **out_tinfo)
5597 g_assert_not_reached ();
5602 mono_aot_get_trampoline (const char *name)
5604 g_assert_not_reached ();
5609 mono_aot_get_unbox_trampoline (MonoMethod *method)
5611 g_assert_not_reached ();
5616 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
5618 g_assert_not_reached ();
5623 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
5625 g_assert_not_reached ();
5630 mono_aot_get_gsharedvt_arg_trampoline (gpointer arg, gpointer addr)
5632 g_assert_not_reached ();
5637 mono_aot_set_make_unreadable (gboolean unreadable)
5642 mono_aot_is_pagefault (void *ptr)
5648 mono_aot_handle_pagefault (void *ptr)
5653 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
5655 g_assert_not_reached ();
5660 mono_aot_register_jit_icall (const char *name, gpointer addr)