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_mutex_lock (&aot_mutex)
159 #define mono_aot_unlock() mono_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_mutex_lock (&aot_page_mutex)
205 #define mono_aot_page_unlock() mono_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_mutex_lock (&amodule->mutex);
229 amodule_unlock (MonoAotModule *amodule)
231 mono_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 has_container = decode_value (p, &p);
479 MonoType *gshared_constraint = NULL;
480 char *par_name = NULL;
484 gboolean is_method = decode_value (p, &p);
487 MonoMethod *method_def;
488 g_assert (type == MONO_TYPE_MVAR);
489 method_def = decode_resolve_method_ref (module, p, &p);
493 container = mono_method_get_generic_container (method_def);
495 MonoClass *class_def;
496 g_assert (type == MONO_TYPE_VAR);
497 class_def = decode_klass_ref (module, p, &p);
501 container = class_def->generic_container;
504 gboolean has_gshared_constraint = decode_value (p, &p);
505 if (has_gshared_constraint) {
506 MonoClass *par_klass;
508 gshared_constraint = decode_type (module, p, &p);
509 if (!gshared_constraint)
512 par_klass = decode_klass_ref (module, p, &p);
516 t = mini_get_shared_gparam (&par_klass->byval_arg, gshared_constraint);
521 klass = mono_class_from_mono_type (t);
523 t = g_new0 (MonoType, 1);
526 t->data.generic_param = mono_generic_container_get_param (container, num);
527 g_assert (gshared_constraint == NULL);
530 MonoGenericParam *par = (MonoGenericParam*)mono_image_alloc0 (module->assembly->image, sizeof (MonoGenericParamFull));
532 par->gshared_constraint = gshared_constraint;
533 par->image = module->assembly->image;
534 t->data.generic_param = par;
536 ((MonoGenericParamFull*)par)->info.name = par_name;
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 ();
1125 if (target && wrapper != target)
1127 ref->method = wrapper;
1130 * These wrappers are associated with a signature, not with a method.
1131 * Since we can't decode them into methods, they need a target method.
1136 if (wrapper_type == MONO_WRAPPER_DELEGATE_INVOKE) {
1137 subtype = decode_value (p, &p);
1138 info = mono_marshal_get_wrapper_info (target);
1140 if (info->subtype != subtype)
1143 if (subtype != WRAPPER_SUBTYPE_NONE)
1147 if (sig_matches_target (module, target, p, &p))
1148 ref->method = target;
1154 case MONO_WRAPPER_NATIVE_TO_MANAGED: {
1158 m = decode_resolve_method_ref (module, p, &p);
1161 klass = decode_klass_ref (module, p, &p);
1164 ref->method = mono_marshal_get_managed_wrapper (m, klass, 0);
1168 g_assert_not_reached ();
1170 } else if (image_index == MONO_AOT_METHODREF_METHODSPEC) {
1171 image_index = decode_value (p, &p);
1172 ref->token = decode_value (p, &p);
1174 image = load_image (module, image_index, TRUE);
1177 } else if (image_index == MONO_AOT_METHODREF_GINST) {
1180 MonoGenericContext ctx;
1183 * These methods do not have a token which resolves them, so we
1184 * resolve them immediately.
1186 klass = decode_klass_ref (module, p, &p);
1190 if (target && target->klass != klass)
1193 image_index = decode_value (p, &p);
1194 ref->token = decode_value (p, &p);
1196 image = load_image (module, image_index, TRUE);
1200 ref->method = mono_get_method_full (image, ref->token, NULL, NULL);
1204 memset (&ctx, 0, sizeof (ctx));
1206 if (FALSE && klass->generic_class) {
1207 ctx.class_inst = klass->generic_class->context.class_inst;
1208 ctx.method_inst = NULL;
1210 ref->method = mono_class_inflate_generic_method_full_checked (ref->method, klass, &ctx, &error);
1211 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
1214 memset (&ctx, 0, sizeof (ctx));
1216 if (!decode_generic_context (module, &ctx, p, &p))
1219 ref->method = mono_class_inflate_generic_method_full_checked (ref->method, klass, &ctx, &error);
1220 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
1221 } else if (image_index == MONO_AOT_METHODREF_ARRAY) {
1225 klass = decode_klass_ref (module, p, &p);
1228 method_type = decode_value (p, &p);
1229 switch (method_type) {
1231 ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank);
1234 ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank * 2);
1237 ref->method = mono_class_get_method_from_name (klass, "Get", -1);
1240 ref->method = mono_class_get_method_from_name (klass, "Address", -1);
1243 ref->method = mono_class_get_method_from_name (klass, "Set", -1);
1246 g_assert_not_reached ();
1249 if (image_index == MONO_AOT_METHODREF_LARGE_IMAGE_INDEX) {
1250 image_index = decode_value (p, &p);
1251 value = decode_value (p, &p);
1254 ref->token = MONO_TOKEN_METHOD_DEF | (value & 0xffffff);
1256 image = load_image (module, image_index, TRUE);
1269 decode_method_ref (MonoAotModule *module, MethodRef *ref, guint8 *buf, guint8 **endbuf)
1271 return decode_method_ref_with_target (module, ref, NULL, buf, endbuf);
1275 * decode_resolve_method_ref_with_target:
1277 * Similar to decode_method_ref, but resolve and return the method itself.
1280 decode_resolve_method_ref_with_target (MonoAotModule *module, MonoMethod *target, guint8 *buf, guint8 **endbuf)
1285 res = decode_method_ref_with_target (module, &ref, target, buf, endbuf);
1292 return mono_get_method (ref.image, ref.token, NULL);
1296 decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
1298 return decode_resolve_method_ref_with_target (module, NULL, buf, endbuf);
1301 #ifdef ENABLE_AOT_CACHE
1307 * - Add options for controlling the cache size
1308 * - Handle full cache by deleting old assemblies lru style
1309 * - Maybe add a threshold after an assembly is AOT compiled
1310 * - Add options for enabling this for specific main assemblies
1313 /* The cache directory */
1314 static char *cache_dir;
1316 /* The number of assemblies AOTed in this run */
1317 static int cache_count;
1319 /* Whenever to AOT in-process */
1320 static gboolean in_process;
1323 collect_assemblies (gpointer data, gpointer user_data)
1325 MonoAssembly *ass = data;
1326 GSList **l = user_data;
1328 *l = g_slist_prepend (*l, ass);
1331 #define SHA1_DIGEST_LENGTH 20
1334 * get_aot_config_hash:
1336 * Return a hash for all the version information an AOT module depends on.
1338 static G_GNUC_UNUSED char*
1339 get_aot_config_hash (MonoAssembly *assembly)
1342 GSList *l, *assembly_list = NULL;
1345 guint8 digest [SHA1_DIGEST_LENGTH];
1348 build_info = mono_get_runtime_build_info ();
1350 s = g_string_new (build_info);
1352 mono_assembly_foreach (collect_assemblies, &assembly_list);
1355 * The assembly list includes the current assembly as well, no need
1358 for (l = assembly_list; l; l = l->next) {
1359 MonoAssembly *ass = l->data;
1361 g_string_append (s, "_");
1362 g_string_append (s, ass->aname.name);
1363 g_string_append (s, "_");
1364 g_string_append (s, ass->image->guid);
1367 for (i = 0; i < s->len; ++i) {
1368 if (!isalnum (s->str [i]) && s->str [i] != '-')
1372 mono_sha1_get_digest ((guint8*)s->str, s->len, digest);
1374 digest_str = g_malloc0 ((SHA1_DIGEST_LENGTH * 2) + 1);
1375 for (i = 0; i < SHA1_DIGEST_LENGTH; ++i)
1376 sprintf (digest_str + (i * 2), "%02x", digest [i]);
1378 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: file dependencies: %s, hash %s", s->str, digest_str);
1380 g_string_free (s, TRUE);
1386 aot_cache_init (void)
1390 enable_aot_cache = TRUE;
1395 * aot_cache_load_module:
1397 * Load the AOT image corresponding to ASSEMBLY from the aot cache, AOTing it if neccessary.
1400 aot_cache_load_module (MonoAssembly *assembly, char **aot_name)
1402 MonoAotCacheConfig *config;
1404 char *fname, *tmp2, *aot_options, *failure_fname;
1416 if (image_is_dynamic (assembly->image))
1419 /* Check in the list of assemblies enabled for aot caching */
1420 config = mono_get_aot_cache_config ();
1424 MonoDomain *domain = mono_domain_get ();
1425 MonoAssembly *entry_assembly = domain->entry_assembly;
1427 // FIXME: This cannot be used for mscorlib during startup, since entry_assembly is not set yet
1428 for (l = config->apps; l; l = l->next) {
1431 if ((entry_assembly && !strcmp (entry_assembly->aname.name, n)) || (!entry_assembly && !strcmp (assembly->aname.name, n)))
1439 for (l = config->assemblies; l; l = l->next) {
1442 if (!strcmp (assembly->aname.name, n))
1452 home = g_get_home_dir ();
1455 cache_dir = g_strdup_printf ("%s/Library/Caches/mono/aot-cache", home);
1456 if (!g_file_test (cache_dir, G_FILE_TEST_EXISTS|G_FILE_TEST_IS_DIR))
1457 g_mkdir_with_parents (cache_dir, 0777);
1461 * The same assembly can be used in multiple configurations, i.e. multiple
1462 * versions of the runtime, with multiple versions of dependent assemblies etc.
1463 * To handle this, we compute a version string containing all this information, hash it,
1464 * and use the hash as a filename suffix.
1466 hash = get_aot_config_hash (assembly);
1468 tmp2 = g_strdup_printf ("%s-%s%s", assembly->image->assembly_name, hash, MONO_SOLIB_EXT);
1469 fname = g_build_filename (cache_dir, tmp2, NULL);
1473 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: loading from cache: '%s'.", fname);
1474 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
1477 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: found in cache: '%s'.", fname);
1481 if (!strcmp (assembly->aname.name, "mscorlib") && !mscorlib_aot_loaded)
1483 * Can't AOT this during startup, so we AOT it when called later from
1484 * mono_aot_get_method ().
1488 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: not found.");
1490 /* Only AOT one assembly per run to avoid slowing down execution too much */
1491 if (cache_count > 0)
1495 /* Check for previous failure */
1496 failure_fname = g_strdup_printf ("%s.failure", fname);
1497 failure_file = fopen (failure_fname, "r");
1499 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: assembly '%s' previously failed to compile '%s' ('%s')... ", assembly->image->name, fname, failure_fname);
1500 g_free (failure_fname);
1503 g_free (failure_fname);
1504 fclose (failure_file);
1507 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: compiling assembly '%s', logfile: '%s.log'... ", assembly->image->name, fname);
1510 * We need to invoke the AOT compiler here. There are multiple approaches:
1511 * - spawn a new runtime process. This can be hard when running with mkbundle, and
1512 * its hard to make the new process load the same set of assemblies.
1513 * - doing it in-process. This exposes the current process to bugs/leaks/side effects of
1515 * - fork a new process and do the work there.
1518 aot_options = g_strdup_printf ("outfile=%s,internal-logfile=%s.log%s%s", fname, fname, config->aot_options ? "," : "", config->aot_options ? config->aot_options : "");
1519 /* Maybe due this in another thread ? */
1520 res = mono_compile_assembly (assembly, mono_parse_default_optimizations (NULL), aot_options);
1522 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: compilation failed.");
1523 failure_fname = g_strdup_printf ("%s.failure", fname);
1524 failure_file = fopen (failure_fname, "a+");
1525 fclose (failure_file);
1526 g_free (failure_fname);
1528 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: compilation succeeded.");
1532 * - Avoid waiting for the aot process to finish ?
1533 * (less overhead, but multiple processes could aot the same assembly at the same time)
1542 logfile_name = g_strdup_printf ("%s/aot.log", cache_dir);
1543 logfile = fopen (logfile_name, "a+");
1544 g_free (logfile_name);
1546 dup2 (fileno (logfile), 1);
1547 dup2 (fileno (logfile), 2);
1549 aot_options = g_strdup_printf ("outfile=%s", fname);
1550 res = mono_compile_assembly (assembly, mono_parse_default_optimizations (NULL), aot_options);
1558 waitpid (pid, &exit_status, 0);
1559 if (!WIFEXITED (exit_status) && (WEXITSTATUS (exit_status) == 0))
1560 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: failed.");
1562 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: succeeded.");
1566 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
1574 aot_cache_init (void)
1579 aot_cache_load_module (MonoAssembly *assembly, char **aot_name)
1587 find_symbol (MonoDl *module, gpointer *globals, const char *name, gpointer *value)
1591 guint16 *table, *entry;
1594 char *symbol = (char*)name;
1597 symbol = g_strdup_printf ("_%s", name);
1600 /* The first entry points to the hash */
1601 table = globals [0];
1604 table_size = table [0];
1607 hash = mono_metadata_str_hash (symbol) % table_size;
1609 entry = &table [hash * 2];
1611 /* Search the hash for the index into the globals table */
1613 while (entry [0] != 0) {
1614 guint32 index = entry [0] - 1;
1615 guint32 next = entry [1];
1617 //printf ("X: %s %s\n", (char*)globals [index * 2], name);
1619 if (!strcmp (globals [index * 2], symbol)) {
1620 global_index = index;
1625 entry = &table [next * 2];
1631 if (global_index != -1)
1632 *value = globals [global_index * 2 + 1];
1639 char *err = mono_dl_symbol (module, name, value);
1647 check_usable (MonoAssembly *assembly, MonoAotFileInfo *info, char **out_msg)
1651 gboolean usable = TRUE;
1652 gboolean full_aot, safepoints;
1654 guint32 excluded_cpu_optimizations;
1656 if (strcmp (assembly->image->guid, info->assembly_guid)) {
1657 msg = g_strdup_printf ("doesn't match assembly");
1661 build_info = mono_get_runtime_build_info ();
1662 if (strlen (info->runtime_version) > 0 && strcmp (info->runtime_version, build_info)) {
1663 msg = g_strdup_printf ("compiled against runtime version '%s' while this runtime has version '%s'", info->runtime_version, build_info);
1666 g_free (build_info);
1668 full_aot = info->flags & MONO_AOT_FILE_FLAG_FULL_AOT;
1670 if (mono_aot_only && !full_aot) {
1671 msg = g_strdup_printf ("not compiled with --aot=full");
1674 if (!mono_aot_only && full_aot) {
1675 msg = g_strdup_printf ("compiled with --aot=full");
1678 if (mono_llvm_only && !(info->flags & MONO_AOT_FILE_FLAG_LLVM_ONLY)) {
1679 msg = g_strdup_printf ("not compiled with --aot=llvmonly");
1683 /* mono_arch_find_imt_method () requires this */
1684 if ((info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM) && !mono_use_llvm) {
1685 msg = g_strdup_printf ("compiled against LLVM");
1688 if (!(info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM) && mono_use_llvm) {
1689 msg = g_strdup_printf ("not compiled against LLVM");
1693 if (mini_get_debug_options ()->mdb_optimizations && !(info->flags & MONO_AOT_FILE_FLAG_DEBUG) && !full_aot) {
1694 msg = g_strdup_printf ("not compiled for debugging");
1698 mono_arch_cpu_optimizations (&excluded_cpu_optimizations);
1699 if (info->opts & excluded_cpu_optimizations) {
1700 msg = g_strdup_printf ("compiled with unsupported CPU optimizations");
1704 if (!mono_aot_only && (info->simd_opts & ~mono_arch_cpu_enumerate_simd_versions ())) {
1705 msg = g_strdup_printf ("compiled with unsupported SIMD extensions");
1711 if (info->gc_name_index != -1) {
1712 char *gc_name = (char*)&blob [info->gc_name_index];
1713 const char *current_gc_name = mono_gc_get_gc_name ();
1715 if (strcmp (current_gc_name, gc_name) != 0) {
1716 msg = g_strdup_printf ("compiled against GC %s, while the current runtime uses GC %s.\n", gc_name, current_gc_name);
1721 safepoints = info->flags & MONO_AOT_FILE_FLAG_SAFEPOINTS;
1723 if (!safepoints && mono_threads_is_coop_enabled ()) {
1724 msg = g_strdup_printf ("not compiled with safepoints");
1733 * TABLE should point to a table of call instructions. Return the address called by the INDEXth entry.
1736 get_call_table_entry (void *table, int index)
1738 #if defined(TARGET_ARM)
1743 ins_addr = (guint32*)table + index;
1745 if ((ins >> ARMCOND_SHIFT) == ARMCOND_NV) {
1747 offset = (((int)(((ins & 0xffffff) << 1) | ((ins >> 24) & 0x1))) << 7) >> 7;
1748 return (char*)ins_addr + (offset * 2) + 8 + 1;
1750 offset = (((int)ins & 0xffffff) << 8) >> 8;
1751 return (char*)ins_addr + (offset * 4) + 8;
1753 #elif defined(TARGET_ARM64)
1754 return mono_arch_get_call_target ((guint8*)table + (index * 4) + 4);
1755 #elif defined(TARGET_X86) || defined(TARGET_AMD64)
1756 /* The callee expects an ip which points after the call */
1757 return mono_arch_get_call_target ((guint8*)table + (index * 5) + 5);
1759 g_assert_not_reached ();
1767 * Initialize the shared got entries for AMODULE.
1770 init_amodule_got (MonoAotModule *amodule)
1774 MonoJumpInfo *patches;
1775 guint32 got_offsets [128];
1778 /* These can't be initialized in load_aot_module () */
1779 if (amodule->shared_got [0] || amodule->got_initializing)
1782 amodule->got_initializing = TRUE;
1784 mp = mono_mempool_new ();
1785 npatches = amodule->info.nshared_got_entries;
1786 for (i = 0; i < npatches; ++i)
1787 got_offsets [i] = i;
1788 patches = decode_patches (amodule, mp, npatches, FALSE, got_offsets);
1790 for (i = 0; i < npatches; ++i) {
1793 if (ji->type == MONO_PATCH_INFO_GC_CARD_TABLE_ADDR && !mono_gc_is_moving ()) {
1794 amodule->shared_got [i] = NULL;
1795 } else if (ji->type == MONO_PATCH_INFO_GC_NURSERY_START && !mono_gc_is_moving ()) {
1796 amodule->shared_got [i] = NULL;
1797 } else if (ji->type == MONO_PATCH_INFO_GC_NURSERY_BITS && !mono_gc_is_moving ()) {
1798 amodule->shared_got [i] = NULL;
1799 } else if (ji->type == MONO_PATCH_INFO_IMAGE) {
1800 amodule->shared_got [i] = amodule->assembly->image;
1801 } else if (ji->type == MONO_PATCH_INFO_MSCORLIB_GOT_ADDR) {
1802 if (mono_defaults.corlib) {
1803 MonoAotModule *mscorlib_amodule = mono_defaults.corlib->aot_module;
1805 if (mscorlib_amodule)
1806 amodule->shared_got [i] = mscorlib_amodule->got;
1808 amodule->shared_got [i] = amodule->got;
1810 } else if (ji->type == MONO_PATCH_INFO_AOT_MODULE) {
1811 amodule->shared_got [i] = amodule;
1813 amodule->shared_got [i] = mono_resolve_patch_target (NULL, mono_get_root_domain (), NULL, ji, FALSE);
1818 for (i = 0; i < npatches; ++i)
1819 amodule->got [i] = amodule->shared_got [i];
1821 if (amodule->llvm_got) {
1822 for (i = 0; i < npatches; ++i)
1823 amodule->llvm_got [i] = amodule->shared_got [i];
1826 mono_mempool_destroy (mp);
1830 load_aot_module (MonoAssembly *assembly, gpointer user_data)
1833 MonoAotModule *amodule;
1835 gboolean usable = TRUE;
1836 char *version_symbol = NULL;
1838 gpointer *globals = NULL;
1839 MonoAotFileInfo *info = NULL;
1842 gboolean do_load_image = TRUE;
1843 int align_double, align_int64;
1845 if (mono_compile_aot)
1848 if (assembly->image->aot_module)
1850 * Already loaded. This can happen because the assembly loading code might invoke
1851 * the assembly load hooks multiple times for the same assembly.
1855 if (image_is_dynamic (assembly->image) || assembly->ref_only)
1859 if (static_aot_modules)
1860 info = g_hash_table_lookup (static_aot_modules, assembly->aname.name);
1868 /* Statically linked AOT module */
1869 aot_name = g_strdup_printf ("%s", assembly->aname.name);
1870 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "Found statically linked AOT module '%s'.\n", aot_name);
1871 globals = info->globals;
1873 if (enable_aot_cache)
1874 sofile = aot_cache_load_module (assembly, &aot_name);
1877 aot_name = g_strdup_printf ("%s%s", assembly->image->name, MONO_SOLIB_EXT);
1879 sofile = mono_dl_open (aot_name, MONO_DL_LAZY, &err);
1882 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module '%s' not found: %s\n", aot_name, err);
1885 aot_name = g_strdup_printf ("%s/mono/aot-cache/%s/%s%s", mono_assembly_getrootdir(), ARCHITECTURE, g_path_get_basename (assembly->image->name), MONO_SOLIB_EXT);
1886 sofile = mono_dl_open (aot_name, MONO_DL_LAZY, &err);
1888 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module '%s' not found: %s\n", aot_name, err);
1896 if (!sofile && !globals) {
1897 if (mono_aot_only && assembly->image->tables [MONO_TABLE_METHOD].rows)
1898 g_error ("Failed to load AOT module '%s' in aot-only mode.\n", aot_name);
1904 find_symbol (sofile, globals, "mono_aot_version", (gpointer *) &version_symbol);
1905 find_symbol (sofile, globals, "mono_aot_file_info", (gpointer*)&info);
1908 if (version_symbol) {
1909 /* Old file format */
1910 version = atoi (version_symbol);
1913 version = info->version;
1916 if (version != MONO_AOT_FILE_VERSION) {
1917 msg = g_strdup_printf ("wrong file format version (expected %d got %d)", MONO_AOT_FILE_VERSION, version);
1920 usable = check_usable (assembly, info, &msg);
1924 if (mono_aot_only) {
1925 g_error ("Failed to load AOT module '%s' while running in aot-only mode: %s.\n", aot_name, msg);
1927 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: module %s is unusable: %s.\n", aot_name, msg);
1932 mono_dl_close (sofile);
1933 assembly->image->aot_module = NULL;
1938 align_double = MONO_ABI_ALIGNOF (double);
1939 align_int64 = MONO_ABI_ALIGNOF (gint64);
1940 g_assert (info->double_align == align_double);
1941 g_assert (info->long_align == align_int64);
1942 g_assert (info->generic_tramp_num == MONO_TRAMPOLINE_NUM);
1946 amodule = g_new0 (MonoAotModule, 1);
1947 amodule->aot_name = aot_name;
1948 amodule->assembly = assembly;
1950 memcpy (&amodule->info, info, sizeof (*info));
1952 amodule->got = amodule->info.jit_got;
1953 amodule->llvm_got = amodule->info.llvm_got;
1954 amodule->globals = globals;
1955 amodule->sofile = sofile;
1956 amodule->method_to_code = g_hash_table_new (mono_aligned_addr_hash, NULL);
1957 amodule->extra_methods = g_hash_table_new (NULL, NULL);
1958 amodule->blob = blob;
1959 amodule->shared_got = g_new0 (gpointer, info->nshared_got_entries);
1961 mono_mutex_init_recursive (&amodule->mutex);
1963 /* Read image table */
1965 guint32 table_len, i;
1968 table = info->image_table;
1971 table_len = *(guint32*)table;
1972 table += sizeof (guint32);
1973 amodule->image_table = g_new0 (MonoImage*, table_len);
1974 amodule->image_names = g_new0 (MonoAssemblyName, table_len);
1975 amodule->image_guids = g_new0 (char*, table_len);
1976 amodule->image_table_len = table_len;
1977 for (i = 0; i < table_len; ++i) {
1978 MonoAssemblyName *aname = &(amodule->image_names [i]);
1980 aname->name = g_strdup (table);
1981 table += strlen (table) + 1;
1982 amodule->image_guids [i] = g_strdup (table);
1983 table += strlen (table) + 1;
1985 aname->culture = g_strdup (table);
1986 table += strlen (table) + 1;
1987 memcpy (aname->public_key_token, table, strlen (table) + 1);
1988 table += strlen (table) + 1;
1990 table = ALIGN_PTR_TO (table, 8);
1991 aname->flags = *(guint32*)table;
1993 aname->major = *(guint32*)table;
1995 aname->minor = *(guint32*)table;
1997 aname->build = *(guint32*)table;
1999 aname->revision = *(guint32*)table;
2004 amodule->jit_code_start = info->jit_code_start;
2005 amodule->jit_code_end = info->jit_code_end;
2006 amodule->method_info_offsets = info->method_info_offsets;
2007 amodule->ex_info_offsets = info->ex_info_offsets;
2008 amodule->class_info_offsets = info->class_info_offsets;
2009 amodule->class_name_table = info->class_name_table;
2010 amodule->extra_method_table = info->extra_method_table;
2011 amodule->extra_method_info_offsets = info->extra_method_info_offsets;
2012 amodule->unbox_trampolines = info->unbox_trampolines;
2013 amodule->unbox_trampolines_end = info->unbox_trampolines_end;
2014 amodule->unbox_trampoline_addresses = info->unbox_trampoline_addresses;
2015 amodule->unwind_info = info->unwind_info;
2016 amodule->mem_begin = amodule->jit_code_start;
2017 amodule->mem_end = info->mem_end;
2018 amodule->plt = info->plt;
2019 amodule->plt_end = info->plt_end;
2020 amodule->mono_eh_frame = info->mono_eh_frame;
2021 amodule->trampolines [MONO_AOT_TRAMP_SPECIFIC] = info->specific_trampolines;
2022 amodule->trampolines [MONO_AOT_TRAMP_STATIC_RGCTX] = info->static_rgctx_trampolines;
2023 amodule->trampolines [MONO_AOT_TRAMP_IMT_THUNK] = info->imt_thunks;
2024 amodule->trampolines [MONO_AOT_TRAMP_GSHAREDVT_ARG] = info->gsharedvt_arg_trampolines;
2026 if (!strcmp (assembly->aname.name, "mscorlib"))
2027 mscorlib_aot_module = amodule;
2029 /* Compute method addresses */
2030 amodule->methods = g_malloc0 (amodule->info.nmethods * sizeof (gpointer));
2031 for (i = 0; i < amodule->info.nmethods; ++i) {
2034 if (amodule->info.llvm_get_method) {
2035 gpointer (*get_method) (int) = amodule->info.llvm_get_method;
2037 addr = get_method (i);
2040 /* method_addresses () contains a table of branches, since the ios linker can update those correctly */
2041 if (!addr && amodule->info.method_addresses) {
2042 addr = get_call_table_entry (amodule->info.method_addresses, i);
2044 if (addr == amodule->info.method_addresses)
2048 amodule->methods [i] = GINT_TO_POINTER (-1);
2050 amodule->methods [i] = addr;
2053 if (make_unreadable) {
2054 #ifndef TARGET_WIN32
2056 guint8 *page_start, *page_end;
2059 addr = amodule->mem_begin;
2061 len = amodule->mem_end - amodule->mem_begin;
2063 /* Round down in both directions to avoid modifying data which is not ours */
2064 page_start = (guint8 *) (((gssize) (addr)) & ~ (mono_pagesize () - 1)) + mono_pagesize ();
2065 page_end = (guint8 *) (((gssize) (addr + len)) & ~ (mono_pagesize () - 1));
2066 if (page_end > page_start) {
2067 err = mono_mprotect (page_start, (page_end - page_start), MONO_MMAP_NONE);
2068 g_assert (err == 0);
2073 /* Compute the boundaries of LLVM code */
2074 if (info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM)
2075 compute_llvm_code_range (amodule, &amodule->llvm_code_start, &amodule->llvm_code_end);
2079 if (amodule->jit_code_start) {
2080 aot_code_low_addr = MIN (aot_code_low_addr, (gsize)amodule->jit_code_start);
2081 aot_code_high_addr = MAX (aot_code_high_addr, (gsize)amodule->jit_code_end);
2083 if (amodule->llvm_code_start) {
2084 aot_code_low_addr = MIN (aot_code_low_addr, (gsize)amodule->llvm_code_start);
2085 aot_code_high_addr = MAX (aot_code_high_addr, (gsize)amodule->llvm_code_end);
2088 g_hash_table_insert (aot_modules, assembly, amodule);
2091 if (amodule->jit_code_start)
2092 mono_jit_info_add_aot_module (assembly->image, amodule->jit_code_start, amodule->jit_code_end);
2093 if (amodule->llvm_code_start)
2094 mono_jit_info_add_aot_module (assembly->image, amodule->llvm_code_start, amodule->llvm_code_end);
2096 assembly->image->aot_module = amodule;
2098 if (mono_aot_only) {
2100 find_symbol (amodule->sofile, amodule->globals, "specific_trampolines_page", (gpointer *)&code);
2101 amodule->use_page_trampolines = code != NULL;
2102 /*g_warning ("using page trampolines: %d", amodule->use_page_trampolines);*/
2106 * Register the plt region as a single trampoline so we can unwind from this code
2108 mono_tramp_info_register (
2109 mono_tramp_info_create (
2112 amodule->plt_end - amodule->plt,
2114 mono_unwind_get_cie_program ()
2120 * Since we store methoddef and classdef tokens when referring to methods/classes in
2121 * referenced assemblies, we depend on the exact versions of the referenced assemblies.
2122 * MS calls this 'hard binding'. This means we have to load all referenced assemblies
2123 * non-lazily, since we can't handle out-of-date errors later.
2124 * The cached class info also depends on the exact assemblies.
2126 #if defined(__native_client__)
2127 /* TODO: Don't 'load_image' on mscorlib due to a */
2128 /* recursive loading problem. This should be */
2129 /* removed if mscorlib is loaded from disk. */
2130 if (strncmp(assembly->aname.name, "mscorlib", 8)) {
2131 do_load_image = TRUE;
2133 do_load_image = FALSE;
2136 if (do_load_image) {
2137 for (i = 0; i < amodule->image_table_len; ++i)
2138 load_image (amodule, i, FALSE);
2141 if (amodule->out_of_date) {
2142 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);
2144 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);
2147 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: loaded AOT Module for %s.\n", assembly->image->name);
2151 * mono_aot_register_module:
2153 * This should be called by embedding code to register AOT modules statically linked
2154 * into the executable. AOT_INFO should be the value of the
2155 * 'mono_aot_module_<ASSEMBLY_NAME>_info' global symbol from the AOT module.
2158 mono_aot_register_module (gpointer *aot_info)
2162 MonoAotFileInfo *info = (gpointer)aot_info;
2164 g_assert (info->version == MONO_AOT_FILE_VERSION);
2166 globals = info->globals;
2169 aname = info->assembly_name;
2171 /* This could be called before startup */
2175 if (!static_aot_modules)
2176 static_aot_modules = g_hash_table_new (g_str_hash, g_str_equal);
2178 g_hash_table_insert (static_aot_modules, aname, info);
2185 mono_aot_init (void)
2187 mono_mutex_init_recursive (&aot_mutex);
2188 mono_mutex_init_recursive (&aot_page_mutex);
2189 aot_modules = g_hash_table_new (NULL, NULL);
2191 #ifndef __native_client__
2192 mono_install_assembly_load_hook (load_aot_module, NULL);
2194 mono_counters_register ("Async JIT info size", MONO_COUNTER_INT|MONO_COUNTER_JIT, &async_jit_info_size);
2196 if (g_getenv ("MONO_LASTAOT"))
2197 mono_last_aot_method = atoi (g_getenv ("MONO_LASTAOT"));
2202 mono_aot_cleanup (void)
2204 if (aot_jit_icall_hash)
2205 g_hash_table_destroy (aot_jit_icall_hash);
2207 g_hash_table_destroy (aot_modules);
2211 decode_cached_class_info (MonoAotModule *module, MonoCachedClassInfo *info, guint8 *buf, guint8 **endbuf)
2217 info->vtable_size = decode_value (buf, &buf);
2218 if (info->vtable_size == -1)
2221 flags = decode_value (buf, &buf);
2222 info->ghcimpl = (flags >> 0) & 0x1;
2223 info->has_finalize = (flags >> 1) & 0x1;
2224 info->has_cctor = (flags >> 2) & 0x1;
2225 info->has_nested_classes = (flags >> 3) & 0x1;
2226 info->blittable = (flags >> 4) & 0x1;
2227 info->has_references = (flags >> 5) & 0x1;
2228 info->has_static_refs = (flags >> 6) & 0x1;
2229 info->no_special_static_fields = (flags >> 7) & 0x1;
2230 info->is_generic_container = (flags >> 8) & 0x1;
2232 if (info->has_cctor) {
2233 res = decode_method_ref (module, &ref, buf, &buf);
2236 info->cctor_token = ref.token;
2238 if (info->has_finalize) {
2239 res = decode_method_ref (module, &ref, buf, &buf);
2242 info->finalize_image = ref.image;
2243 info->finalize_token = ref.token;
2246 info->instance_size = decode_value (buf, &buf);
2247 info->class_size = decode_value (buf, &buf);
2248 info->packing_size = decode_value (buf, &buf);
2249 info->min_align = decode_value (buf, &buf);
2257 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
2260 MonoClass *klass = vtable->klass;
2261 MonoAotModule *amodule = klass->image->aot_module;
2263 MonoCachedClassInfo class_info;
2268 if (MONO_CLASS_IS_INTERFACE (klass) || klass->rank || !amodule)
2271 info = &amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
2274 err = decode_cached_class_info (amodule, &class_info, p, &p);
2278 for (i = 0; i < slot; ++i)
2279 decode_method_ref (amodule, &ref, p, &p);
2281 res = decode_method_ref (amodule, &ref, p, &p);
2284 if (ref.no_aot_trampoline)
2287 if (mono_metadata_token_index (ref.token) == 0 || mono_metadata_token_table (ref.token) != MONO_TABLE_METHOD)
2290 return mono_aot_get_method_from_token (domain, ref.image, ref.token);
2294 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
2296 MonoAotModule *amodule = klass->image->aot_module;
2300 if (klass->rank || !amodule)
2303 p = (guint8*)&amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
2305 err = decode_cached_class_info (amodule, res, p, &p);
2313 * mono_aot_get_class_from_name:
2315 * Obtains a MonoClass with a given namespace and a given name which is located in IMAGE,
2316 * using a cache stored in the AOT file.
2317 * Stores the resulting class in *KLASS if found, stores NULL otherwise.
2319 * Returns: TRUE if the klass was found/not found in the cache, FALSE if no aot file was
2323 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
2325 MonoAotModule *amodule = image->aot_module;
2326 guint16 *table, *entry;
2329 char full_name_buf [1024];
2331 const char *name2, *name_space2;
2333 guint32 cols [MONO_TYPEDEF_SIZE];
2334 GHashTable *nspace_table;
2336 if (!amodule || !amodule->class_name_table)
2339 amodule_lock (amodule);
2343 /* First look in the cache */
2344 if (!amodule->name_cache)
2345 amodule->name_cache = g_hash_table_new (g_str_hash, g_str_equal);
2346 nspace_table = g_hash_table_lookup (amodule->name_cache, name_space);
2348 *klass = g_hash_table_lookup (nspace_table, name);
2350 amodule_unlock (amodule);
2355 table_size = amodule->class_name_table [0];
2356 table = amodule->class_name_table + 1;
2358 if (name_space [0] == '\0')
2359 full_name = g_strdup_printf ("%s", name);
2361 if (strlen (name_space) + strlen (name) < 1000) {
2362 sprintf (full_name_buf, "%s.%s", name_space, name);
2363 full_name = full_name_buf;
2365 full_name = g_strdup_printf ("%s.%s", name_space, name);
2368 hash = mono_metadata_str_hash (full_name) % table_size;
2369 if (full_name != full_name_buf)
2372 entry = &table [hash * 2];
2374 if (entry [0] != 0) {
2375 t = &image->tables [MONO_TABLE_TYPEDEF];
2378 guint32 index = entry [0];
2379 guint32 next = entry [1];
2380 guint32 token = mono_metadata_make_token (MONO_TABLE_TYPEDEF, index);
2382 name_table_accesses ++;
2384 mono_metadata_decode_row (t, index - 1, cols, MONO_TYPEDEF_SIZE);
2386 name2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
2387 name_space2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
2389 if (!strcmp (name, name2) && !strcmp (name_space, name_space2)) {
2391 amodule_unlock (amodule);
2392 *klass = mono_class_get_checked (image, token, &error);
2393 if (!mono_error_ok (&error))
2394 mono_error_cleanup (&error); /* FIXME don't swallow the error */
2398 amodule_lock (amodule);
2399 nspace_table = g_hash_table_lookup (amodule->name_cache, name_space);
2400 if (!nspace_table) {
2401 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
2402 g_hash_table_insert (amodule->name_cache, (char*)name_space2, nspace_table);
2404 g_hash_table_insert (nspace_table, (char*)name2, *klass);
2405 amodule_unlock (amodule);
2411 entry = &table [next * 2];
2418 amodule_unlock (amodule);
2423 /* Compute the boundaries of the LLVM code for AMODULE. */
2425 compute_llvm_code_range (MonoAotModule *amodule, guint8 **code_start, guint8 **code_end)
2428 int version, fde_count;
2431 if (amodule->info.llvm_get_method) {
2432 gpointer (*get_method) (int) = amodule->info.llvm_get_method;
2434 *code_start = get_method (-1);
2435 *code_end = get_method (-2);
2437 g_assert (*code_end > *code_start);
2441 g_assert (amodule->mono_eh_frame);
2443 p = amodule->mono_eh_frame;
2445 /* p points to data emitted by LLVM in DwarfException::EmitMonoEHFrame () */
2449 g_assert (version == 3);
2452 p = ALIGN_PTR_TO (p, 4);
2454 fde_count = *(guint32*)p;
2458 if (fde_count > 0) {
2459 *code_start = amodule->methods [table [0]];
2460 *code_end = (guint8*)amodule->methods [table [(fde_count - 1) * 2]] + table [fde_count * 2];
2468 is_llvm_code (MonoAotModule *amodule, guint8 *code)
2470 if ((guint8*)code >= amodule->llvm_code_start && (guint8*)code < amodule->llvm_code_end)
2477 is_thumb_code (MonoAotModule *amodule, guint8 *code)
2479 if (is_llvm_code (amodule, code) && (amodule->info.flags & MONO_AOT_FILE_FLAG_LLVM_THUMB))
2486 * decode_llvm_mono_eh_frame:
2488 * Decode the EH information emitted by our modified LLVM compiler and construct a
2489 * MonoJitInfo structure from it.
2490 * LOCKING: Acquires the domain lock.
2493 decode_llvm_mono_eh_frame (MonoAotModule *amodule, MonoDomain *domain,
2494 MonoMethod *method, guint8 *code, guint32 code_len,
2495 MonoJitExceptionInfo *clauses, int num_clauses,
2496 MonoJitInfoFlags flags,
2498 int *this_reg, int *this_offset)
2500 guint8 *p, *code1, *code2;
2501 guint8 *fde, *cie, *code_start, *code_end;
2502 int version, fde_count;
2504 int i, pos, left, right;
2505 MonoJitExceptionInfo *ei;
2506 guint32 fde_len, ei_len, nested_len, nindex;
2507 gpointer *type_info;
2509 MonoLLVMFDEInfo info;
2511 if (!amodule->mono_eh_frame) {
2512 jinfo = mono_domain_alloc0_lock_free (domain, mono_jit_info_size (flags, num_clauses, 0));
2513 mono_jit_info_init (jinfo, method, code, code_len, flags, num_clauses, 0);
2514 memcpy (jinfo->clauses, clauses, num_clauses * sizeof (MonoJitExceptionInfo));
2518 g_assert (amodule->mono_eh_frame && code);
2520 p = amodule->mono_eh_frame;
2522 /* p points to data emitted by LLVM in DwarfMonoException::EmitMonoEHFrame () */
2526 g_assert (version == 3);
2528 /* func_encoding = *p; */
2530 p = ALIGN_PTR_TO (p, 4);
2532 fde_count = *(guint32*)p;
2536 /* There is +1 entry in the table */
2537 cie = p + ((fde_count + 1) * 8);
2539 /* Binary search in the table to find the entry for code */
2543 pos = (left + right) / 2;
2545 /* The table contains method index/fde offset pairs */
2546 g_assert (table [(pos * 2)] != -1);
2547 code1 = amodule->methods [table [(pos * 2)]];
2548 if (pos + 1 == fde_count) {
2549 code2 = amodule->llvm_code_end;
2551 g_assert (table [(pos + 1) * 2] != -1);
2552 code2 = amodule->methods [table [(pos + 1) * 2]];
2557 else if (code >= code2)
2563 code_start = amodule->methods [table [(pos * 2)]];
2564 if (pos + 1 == fde_count) {
2565 /* The +1 entry in the table contains the length of the last method */
2566 int len = table [(pos + 1) * 2];
2567 code_end = code_start + len;
2569 code_end = amodule->methods [table [(pos + 1) * 2]];
2572 code_len = code_end - code_start;
2574 g_assert (code >= code_start && code < code_end);
2576 if (is_thumb_code (amodule, code_start))
2577 /* Clear thumb flag */
2578 code_start = (guint8*)(((mgreg_t)code_start) & ~1);
2580 fde = amodule->mono_eh_frame + table [(pos * 2) + 1];
2581 /* This won't overflow because there is +1 entry in the table */
2582 fde_len = table [(pos * 2) + 2 + 1] - table [(pos * 2) + 1];
2584 mono_unwind_decode_llvm_mono_fde (fde, fde_len, cie, code_start, &info);
2586 ei_len = info.ex_info_len;
2587 type_info = info.type_info;
2588 *this_reg = info.this_reg;
2589 *this_offset = info.this_offset;
2591 /* Count number of nested clauses */
2593 for (i = 0; i < ei_len; ++i) {
2594 /* This might be unaligned */
2595 gint32 cindex1 = read32 (type_info [i]);
2598 for (l = nesting [cindex1]; l; l = l->next)
2603 * LLVM might represent one IL region with multiple regions, so have to
2604 * allocate a new JI.
2607 mono_domain_alloc0_lock_free (domain, mono_jit_info_size (flags, ei_len + nested_len, 0));
2608 mono_jit_info_init (jinfo, method, code, code_len, flags, ei_len + nested_len, 0);
2610 jinfo->unwind_info = mono_cache_unwind_info (info.unw_info, info.unw_info_len);
2611 /* This signals that unwind_info points to a normal cached unwind info */
2612 jinfo->from_aot = 0;
2613 jinfo->from_llvm = 1;
2615 for (i = 0; i < ei_len; ++i) {
2617 * clauses contains the original IL exception info saved by the AOT
2618 * compiler, we have to combine that with the information produced by LLVM
2620 /* The type_info entries contain IL clause indexes */
2621 int clause_index = read32 (type_info [i]);
2622 MonoJitExceptionInfo *jei = &jinfo->clauses [i];
2623 MonoJitExceptionInfo *orig_jei = &clauses [clause_index];
2625 g_assert (clause_index < num_clauses);
2626 jei->flags = orig_jei->flags;
2627 jei->data.catch_class = orig_jei->data.catch_class;
2629 jei->try_start = ei [i].try_start;
2630 jei->try_end = ei [i].try_end;
2631 jei->handler_start = ei [i].handler_start;
2632 jei->clause_index = clause_index;
2634 if (is_thumb_code (amodule, jei->try_start)) {
2635 jei->try_start = (void*)((mgreg_t)jei->try_start & ~1);
2636 jei->try_end = (void*)((mgreg_t)jei->try_end & ~1);
2637 /* Make sure we transition to thumb when a handler starts */
2638 jei->handler_start = (void*)((mgreg_t)jei->handler_start + 1);
2642 /* See exception_cb () in mini-llvm.c as to why this is needed */
2644 for (i = 0; i < ei_len; ++i) {
2645 gint32 cindex1 = read32 (type_info [i]);
2648 for (l = nesting [cindex1]; l; l = l->next) {
2649 gint32 nesting_cindex = GPOINTER_TO_INT (l->data);
2650 MonoJitExceptionInfo *nesting_ei;
2651 MonoJitExceptionInfo *nesting_clause = &clauses [nesting_cindex];
2653 nesting_ei = &jinfo->clauses [nindex];
2656 memcpy (nesting_ei, &jinfo->clauses [i], sizeof (MonoJitExceptionInfo));
2657 nesting_ei->flags = nesting_clause->flags;
2658 nesting_ei->data.catch_class = nesting_clause->data.catch_class;
2659 nesting_ei->clause_index = nesting_cindex;
2662 g_assert (nindex == ei_len + nested_len);
2668 alloc0_jit_info_data (MonoDomain *domain, int size, gboolean async_context)
2672 if (async_context) {
2673 res = mono_domain_alloc0_lock_free (domain, size);
2674 InterlockedExchangeAdd (&async_jit_info_size, size);
2676 res = mono_domain_alloc0 (domain, size);
2682 * LOCKING: Acquires the domain lock.
2683 * In async context, this is async safe.
2686 decode_exception_debug_info (MonoAotModule *amodule, MonoDomain *domain,
2687 MonoMethod *method, guint8* ex_info,
2688 guint8 *code, guint32 code_len)
2690 int i, buf_len, num_clauses, len;
2692 MonoJitInfoFlags flags = JIT_INFO_NONE;
2693 guint unwind_info, eflags;
2694 gboolean has_generic_jit_info, has_dwarf_unwind_info, has_clauses, has_seq_points, has_try_block_holes, has_arch_eh_jit_info;
2695 gboolean from_llvm, has_gc_map;
2697 int try_holes_info_size, num_holes;
2698 int this_reg = 0, this_offset = 0;
2701 /* Load the method info from the AOT file */
2702 async = mono_thread_info_is_async_context ();
2705 eflags = decode_value (p, &p);
2706 has_generic_jit_info = (eflags & 1) != 0;
2707 has_dwarf_unwind_info = (eflags & 2) != 0;
2708 has_clauses = (eflags & 4) != 0;
2709 has_seq_points = (eflags & 8) != 0;
2710 from_llvm = (eflags & 16) != 0;
2711 has_try_block_holes = (eflags & 32) != 0;
2712 has_gc_map = (eflags & 64) != 0;
2713 has_arch_eh_jit_info = (eflags & 128) != 0;
2715 if (has_dwarf_unwind_info) {
2716 unwind_info = decode_value (p, &p);
2717 g_assert (unwind_info < (1 << 30));
2719 unwind_info = decode_value (p, &p);
2721 if (has_generic_jit_info)
2722 flags |= JIT_INFO_HAS_GENERIC_JIT_INFO;
2724 if (has_try_block_holes) {
2725 num_holes = decode_value (p, &p);
2726 flags |= JIT_INFO_HAS_TRY_BLOCK_HOLES;
2727 try_holes_info_size = sizeof (MonoTryBlockHoleTableJitInfo) + num_holes * sizeof (MonoTryBlockHoleJitInfo);
2729 num_holes = try_holes_info_size = 0;
2732 if (has_arch_eh_jit_info) {
2733 flags |= JIT_INFO_HAS_ARCH_EH_INFO;
2734 /* Overwrite the original code_len which includes alignment padding */
2735 code_len = decode_value (p, &p);
2738 /* Exception table */
2740 num_clauses = decode_value (p, &p);
2745 MonoJitExceptionInfo *clauses;
2752 * Part of the info is encoded by the AOT compiler, the rest is in the .eh_frame
2755 clauses = g_new0 (MonoJitExceptionInfo, num_clauses);
2756 nesting = g_new0 (GSList*, num_clauses);
2758 for (i = 0; i < num_clauses; ++i) {
2759 MonoJitExceptionInfo *ei = &clauses [i];
2761 ei->flags = decode_value (p, &p);
2763 if (decode_value (p, &p))
2764 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
2766 ei->clause_index = i;
2768 ei->try_offset = decode_value (p, &p);
2769 ei->try_len = decode_value (p, &p);
2770 ei->handler_offset = decode_value (p, &p);
2771 ei->handler_len = decode_value (p, &p);
2773 /* Read the list of nesting clauses */
2775 int nesting_index = decode_value (p, &p);
2776 if (nesting_index == -1)
2778 nesting [i] = g_slist_prepend (nesting [i], GINT_TO_POINTER (nesting_index));
2782 jinfo = decode_llvm_mono_eh_frame (amodule, domain, method, code, code_len, clauses, num_clauses, flags, nesting, &this_reg, &this_offset);
2785 for (i = 0; i < num_clauses; ++i)
2786 g_slist_free (nesting [i]);
2789 len = mono_jit_info_size (flags, num_clauses, num_holes);
2790 jinfo = alloc0_jit_info_data (domain, len, async);
2791 mono_jit_info_init (jinfo, method, code, code_len, flags, num_clauses, num_holes);
2793 for (i = 0; i < jinfo->num_clauses; ++i) {
2794 MonoJitExceptionInfo *ei = &jinfo->clauses [i];
2796 ei->flags = decode_value (p, &p);
2798 #ifdef MONO_CONTEXT_SET_LLVM_EXC_REG
2799 /* Not used for catch clauses */
2800 if (ei->flags != MONO_EXCEPTION_CLAUSE_NONE)
2801 ei->exvar_offset = decode_value (p, &p);
2803 ei->exvar_offset = decode_value (p, &p);
2806 if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER || ei->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
2807 ei->data.filter = code + decode_value (p, &p);
2809 int len = decode_value (p, &p);
2815 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
2819 ei->try_start = code + decode_value (p, &p);
2820 ei->try_end = code + decode_value (p, &p);
2821 ei->handler_start = code + decode_value (p, &p);
2824 jinfo->unwind_info = unwind_info;
2825 jinfo->domain_neutral = 0;
2826 jinfo->from_aot = 1;
2829 if (has_try_block_holes) {
2830 MonoTryBlockHoleTableJitInfo *table;
2832 g_assert (jinfo->has_try_block_holes);
2834 table = mono_jit_info_get_try_block_hole_table_info (jinfo);
2837 table->num_holes = (guint16)num_holes;
2838 for (i = 0; i < num_holes; ++i) {
2839 MonoTryBlockHoleJitInfo *hole = &table->holes [i];
2840 hole->clause = decode_value (p, &p);
2841 hole->length = decode_value (p, &p);
2842 hole->offset = decode_value (p, &p);
2846 if (has_arch_eh_jit_info) {
2847 MonoArchEHJitInfo *eh_info;
2849 g_assert (jinfo->has_arch_eh_info);
2851 eh_info = mono_jit_info_get_arch_eh_info (jinfo);
2852 eh_info->stack_size = decode_value (p, &p);
2853 eh_info->epilog_size = decode_value (p, &p);
2857 /* The rest is not needed in async mode */
2858 jinfo->async = TRUE;
2859 jinfo->d.aot_info = amodule;
2864 if (has_generic_jit_info) {
2865 MonoGenericJitInfo *gi;
2868 g_assert (jinfo->has_generic_jit_info);
2870 gi = mono_jit_info_get_generic_jit_info (jinfo);
2873 gi->nlocs = decode_value (p, &p);
2875 gi->locations = alloc0_jit_info_data (domain, gi->nlocs * sizeof (MonoDwarfLocListEntry), async);
2876 for (i = 0; i < gi->nlocs; ++i) {
2877 MonoDwarfLocListEntry *entry = &gi->locations [i];
2879 entry->is_reg = decode_value (p, &p);
2880 entry->reg = decode_value (p, &p);
2882 entry->offset = decode_value (p, &p);
2884 entry->from = decode_value (p, &p);
2885 entry->to = decode_value (p, &p);
2890 gi->has_this = this_reg != -1;
2891 gi->this_reg = this_reg;
2892 gi->this_offset = this_offset;
2894 gi->has_this = decode_value (p, &p);
2895 gi->this_reg = decode_value (p, &p);
2896 gi->this_offset = decode_value (p, &p);
2900 len = decode_value (p, &p);
2904 jinfo->d.method = decode_resolve_method_ref (amodule, p, &p);
2906 gi->generic_sharing_context = g_new0 (MonoGenericSharingContext, 1);
2907 if (decode_value (p, &p)) {
2909 MonoGenericSharingContext *gsctx = gi->generic_sharing_context;
2911 gsctx->is_gsharedvt = TRUE;
2915 if (method && has_seq_points) {
2916 MonoSeqPointInfo *seq_points;
2918 p += mono_seq_point_info_read (&seq_points, p, FALSE);
2920 mono_domain_lock (domain);
2921 g_hash_table_insert (domain_jit_info (domain)->seq_points, method, seq_points);
2922 mono_domain_unlock (domain);
2925 /* Load debug info */
2926 buf_len = decode_value (p, &p);
2928 mono_debug_add_aot_method (domain, method, code, p, buf_len);
2932 int map_size = decode_value (p, &p);
2933 /* The GC map requires 4 bytes of alignment */
2934 while ((guint64)(gsize)p % 4)
2940 if (amodule != jinfo->d.method->klass->image->aot_module) {
2943 ji_to_amodule = g_hash_table_new (NULL, NULL);
2944 g_hash_table_insert (ji_to_amodule, jinfo, amodule);
2952 amodule_contains_code_addr (MonoAotModule *amodule, guint8 *code)
2954 return (code >= amodule->jit_code_start && code <= amodule->jit_code_end) ||
2955 (code >= amodule->llvm_code_start && code <= amodule->llvm_code_end);
2959 * mono_aot_get_unwind_info:
2961 * Return a pointer to the DWARF unwind info belonging to JI.
2964 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
2966 MonoAotModule *amodule;
2968 guint8 *code = ji->code_start;
2971 amodule = ji->d.aot_info;
2973 amodule = jinfo_get_method (ji)->klass->image->aot_module;
2975 g_assert (ji->from_aot);
2977 if (!amodule_contains_code_addr (amodule, code)) {
2978 /* ji belongs to a different aot module than amodule */
2980 g_assert (ji_to_amodule);
2981 amodule = g_hash_table_lookup (ji_to_amodule, ji);
2983 g_assert (amodule_contains_code_addr (amodule, code));
2987 p = amodule->unwind_info + ji->unwind_info;
2988 *unwind_info_len = decode_value (p, &p);
2993 msort_method_addresses_internal (gpointer *array, int *indexes, int lo, int hi, gpointer *scratch, int *scratch_indexes)
2995 int mid = (lo + hi) / 2;
3002 for (i = lo; i < hi; ++i)
3003 if (array [i] > array [i + 1])
3006 /* Already sorted */
3010 msort_method_addresses_internal (array, indexes, lo, mid, scratch, scratch_indexes);
3011 msort_method_addresses_internal (array, indexes, mid + 1, hi, scratch, scratch_indexes);
3013 if (array [mid] < array [mid + 1])
3019 for (i = lo; i <= hi; i ++) {
3020 if (t_lo <= mid && ((t_hi > hi) || array [t_lo] < array [t_hi])) {
3021 scratch [i] = array [t_lo];
3022 scratch_indexes [i] = indexes [t_lo];
3025 scratch [i] = array [t_hi];
3026 scratch_indexes [i] = indexes [t_hi];
3030 for (i = lo; i <= hi; ++i) {
3031 array [i] = scratch [i];
3032 indexes [i] = scratch_indexes [i];
3037 msort_method_addresses (gpointer *array, int *indexes, int len)
3040 int *scratch_indexes;
3042 scratch = g_new (gpointer, len);
3043 scratch_indexes = g_new (int, len);
3044 msort_method_addresses_internal (array, indexes, 0, len - 1, scratch, scratch_indexes);
3046 g_free (scratch_indexes);
3050 * mono_aot_find_jit_info:
3052 * In async context, the resulting MonoJitInfo will not have its method field set, and it will not be added
3053 * to the jit info tables.
3054 * FIXME: Large sizes in the lock free allocator
3057 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
3059 int pos, left, right, code_len;
3060 int method_index, table_len;
3062 MonoAotModule *amodule = image->aot_module;
3063 MonoMethod *method = NULL;
3065 guint8 *code, *ex_info, *p;
3069 guint8 *code1, *code2;
3076 nmethods = amodule->info.nmethods;
3078 if (domain != mono_get_root_domain ())
3082 if (!amodule_contains_code_addr (amodule, addr))
3085 async = mono_thread_info_is_async_context ();
3087 /* Compute a sorted table mapping code to method indexes. */
3088 if (!amodule->sorted_methods) {
3090 gpointer *methods = g_new0 (gpointer, nmethods);
3091 int *method_indexes = g_new0 (int, nmethods);
3092 int methods_len = 0;
3094 for (i = 0; i < nmethods; ++i) {
3095 /* Skip the -1 entries to speed up sorting */
3096 if (amodule->methods [i] == GINT_TO_POINTER (-1))
3098 methods [methods_len] = amodule->methods [i];
3099 method_indexes [methods_len] = i;
3102 /* Use a merge sort as this is mostly sorted */
3103 msort_method_addresses (methods, method_indexes, methods_len);
3104 for (i = 0; i < methods_len -1; ++i)
3105 g_assert (methods [i] <= methods [i + 1]);
3106 amodule->sorted_methods_len = methods_len;
3107 if (InterlockedCompareExchangePointer ((gpointer*)&amodule->sorted_methods, methods, NULL) != NULL)
3108 /* Somebody got in before us */
3110 if (InterlockedCompareExchangePointer ((gpointer*)&amodule->sorted_method_indexes, method_indexes, NULL) != NULL)
3111 /* Somebody got in before us */
3112 g_free (method_indexes);
3115 /* Binary search in the sorted_methods table */
3116 methods = amodule->sorted_methods;
3117 methods_len = amodule->sorted_methods_len;
3120 right = methods_len;
3122 pos = (left + right) / 2;
3124 code1 = methods [pos];
3125 if (pos + 1 == methods_len) {
3126 if (code1 >= amodule->jit_code_start && code1 < amodule->jit_code_end)
3127 code2 = amodule->jit_code_end;
3129 code2 = amodule->llvm_code_end;
3131 code2 = methods [pos + 1];
3136 else if (code >= code2)
3142 g_assert (addr >= methods [pos]);
3143 if (pos + 1 < methods_len)
3144 g_assert (addr < methods [pos + 1]);
3145 method_index = amodule->sorted_method_indexes [pos];
3147 /* In async mode, jinfo is not added to the normal jit info table, so have to cache it ourselves */
3149 JitInfoMap *table = amodule->async_jit_info_table;
3153 len = table [0].method_index;
3154 for (i = 1; i < len; ++i) {
3155 if (table [i].method_index == method_index)
3156 return table [i].jinfo;
3161 code = amodule->methods [method_index];
3162 ex_info = &amodule->blob [mono_aot_get_offset (amodule->ex_info_offsets, method_index)];
3164 if (pos == methods_len - 1) {
3165 if (code >= amodule->jit_code_start && code < amodule->jit_code_end)
3166 code_len = amodule->jit_code_end - code;
3168 code_len = amodule->llvm_code_end - code;
3170 code_len = (guint8*)methods [pos + 1] - (guint8*)methods [pos];
3173 g_assert ((guint8*)code <= (guint8*)addr && (guint8*)addr < (guint8*)code + code_len);
3175 /* Might be a wrapper/extra method */
3177 if (amodule->extra_methods) {
3178 amodule_lock (amodule);
3179 method = g_hash_table_lookup (amodule->extra_methods, GUINT_TO_POINTER (method_index));
3180 amodule_unlock (amodule);
3186 if (method_index >= image->tables [MONO_TABLE_METHOD].rows) {
3188 * This is hit for extra methods which are called directly, so they are
3189 * not in amodule->extra_methods.
3191 table_len = amodule->extra_method_info_offsets [0];
3192 table = amodule->extra_method_info_offsets + 1;
3199 pos = ((left + right) / 2);
3201 g_assert (pos < table_len);
3203 if (table [pos * 2] < method_index)
3205 else if (table [pos * 2] > method_index)
3211 p = amodule->blob + table [(pos * 2) + 1];
3212 method = decode_resolve_method_ref (amodule, p, &p);
3214 /* Happens when a random address is passed in which matches a not-yey called wrapper encoded using its name */
3217 token = mono_metadata_make_token (MONO_TABLE_METHOD, method_index + 1);
3218 method = mono_get_method (image, token, NULL);
3225 //printf ("F: %s\n", mono_method_full_name (method, TRUE));
3227 jinfo = decode_exception_debug_info (amodule, domain, method, ex_info, code, code_len);
3229 g_assert ((guint8*)addr >= (guint8*)jinfo->code_start);
3231 /* Add it to the normal JitInfo tables */
3233 JitInfoMap *old_table, *new_table;
3237 * Use a simple inmutable table with linear search to cache async jit info entries.
3238 * This assumes that the number of entries is small.
3241 /* Copy the table, adding a new entry at the end */
3242 old_table = amodule->async_jit_info_table;
3244 len = old_table[0].method_index;
3247 new_table = alloc0_jit_info_data (domain, (len + 1) * sizeof (JitInfoMap), async);
3249 memcpy (new_table, old_table, len * sizeof (JitInfoMap));
3250 new_table [0].method_index = len + 1;
3251 new_table [len].method_index = method_index;
3252 new_table [len].jinfo = jinfo;
3254 mono_memory_barrier ();
3255 if (InterlockedCompareExchangePointer ((gpointer)&amodule->async_jit_info_table, new_table, old_table) == old_table)
3259 mono_jit_info_table_add (domain, jinfo);
3262 if ((guint8*)addr >= (guint8*)jinfo->code_start + jinfo->code_size)
3263 /* addr is in the padding between methods, see the adjustment of code_size in decode_exception_debug_info () */
3270 decode_patch (MonoAotModule *aot_module, MonoMemPool *mp, MonoJumpInfo *ji, guint8 *buf, guint8 **endbuf)
3278 case MONO_PATCH_INFO_METHOD:
3279 case MONO_PATCH_INFO_METHOD_JUMP:
3280 case MONO_PATCH_INFO_ICALL_ADDR:
3281 case MONO_PATCH_INFO_METHOD_RGCTX:
3282 case MONO_PATCH_INFO_METHOD_CODE_SLOT: {
3286 res = decode_method_ref (aot_module, &ref, p, &p);
3290 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)) {
3291 ji->data.target = mono_create_ftnptr (mono_domain_get (), mono_create_jit_trampoline_from_token (ref.image, ref.token));
3292 ji->type = MONO_PATCH_INFO_ABS;
3296 ji->data.method = ref.method;
3298 ji->data.method = mono_get_method (ref.image, ref.token, NULL);
3299 g_assert (ji->data.method);
3300 mono_class_init (ji->data.method->klass);
3304 case MONO_PATCH_INFO_INTERNAL_METHOD:
3305 case MONO_PATCH_INFO_JIT_ICALL_ADDR: {
3306 guint32 len = decode_value (p, &p);
3308 ji->data.name = (char*)p;
3312 case MONO_PATCH_INFO_METHODCONST:
3314 ji->data.method = decode_resolve_method_ref (aot_module, p, &p);
3315 if (!ji->data.method)
3318 case MONO_PATCH_INFO_VTABLE:
3319 case MONO_PATCH_INFO_CLASS:
3320 case MONO_PATCH_INFO_IID:
3321 case MONO_PATCH_INFO_ADJUSTED_IID:
3323 ji->data.klass = decode_klass_ref (aot_module, p, &p);
3324 if (!ji->data.klass)
3327 case MONO_PATCH_INFO_DELEGATE_TRAMPOLINE:
3328 ji->data.del_tramp = mono_mempool_alloc0 (mp, sizeof (MonoDelegateClassMethodPair));
3329 ji->data.del_tramp->klass = decode_klass_ref (aot_module, p, &p);
3330 if (!ji->data.del_tramp->klass)
3332 if (decode_value (p, &p)) {
3333 ji->data.del_tramp->method = decode_resolve_method_ref (aot_module, p, &p);
3334 if (!ji->data.del_tramp->method)
3337 ji->data.del_tramp->is_virtual = decode_value (p, &p) ? TRUE : FALSE;
3339 case MONO_PATCH_INFO_IMAGE:
3340 ji->data.image = load_image (aot_module, decode_value (p, &p), TRUE);
3341 if (!ji->data.image)
3344 case MONO_PATCH_INFO_FIELD:
3345 case MONO_PATCH_INFO_SFLDA:
3347 ji->data.field = decode_field_info (aot_module, p, &p);
3348 if (!ji->data.field)
3351 case MONO_PATCH_INFO_SWITCH:
3352 ji->data.table = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoBBTable));
3353 ji->data.table->table_size = decode_value (p, &p);
3354 table = mono_domain_alloc (mono_domain_get (), sizeof (gpointer) * ji->data.table->table_size);
3355 ji->data.table->table = (MonoBasicBlock**)table;
3356 for (i = 0; i < ji->data.table->table_size; i++)
3357 table [i] = (gpointer)(gssize)decode_value (p, &p);
3359 case MONO_PATCH_INFO_R4: {
3362 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (float));
3363 val = decode_value (p, &p);
3364 *(float*)ji->data.target = *(float*)&val;
3367 case MONO_PATCH_INFO_R8: {
3371 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (double));
3373 val [0] = decode_value (p, &p);
3374 val [1] = decode_value (p, &p);
3375 v = ((guint64)val [1] << 32) | ((guint64)val [0]);
3376 *(double*)ji->data.target = *(double*)&v;
3379 case MONO_PATCH_INFO_LDSTR:
3380 image = load_image (aot_module, decode_value (p, &p), TRUE);
3383 ji->data.token = mono_jump_info_token_new (mp, image, MONO_TOKEN_STRING + decode_value (p, &p));
3385 case MONO_PATCH_INFO_RVA:
3386 case MONO_PATCH_INFO_DECLSEC:
3387 case MONO_PATCH_INFO_LDTOKEN:
3388 case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
3390 image = load_image (aot_module, decode_value (p, &p), TRUE);
3393 ji->data.token = mono_jump_info_token_new (mp, image, decode_value (p, &p));
3395 ji->data.token->has_context = decode_value (p, &p);
3396 if (ji->data.token->has_context) {
3397 gboolean res = decode_generic_context (aot_module, &ji->data.token->context, p, &p);
3402 case MONO_PATCH_INFO_EXC_NAME:
3403 ji->data.klass = decode_klass_ref (aot_module, p, &p);
3404 if (!ji->data.klass)
3406 ji->data.name = ji->data.klass->name;
3408 case MONO_PATCH_INFO_METHOD_REL:
3409 ji->data.offset = decode_value (p, &p);
3411 case MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG:
3412 case MONO_PATCH_INFO_GC_CARD_TABLE_ADDR:
3413 case MONO_PATCH_INFO_GC_NURSERY_START:
3414 case MONO_PATCH_INFO_GC_NURSERY_BITS:
3415 case MONO_PATCH_INFO_JIT_TLS_ID:
3417 case MONO_PATCH_INFO_CASTCLASS_CACHE:
3418 ji->data.index = decode_value (p, &p);
3420 case MONO_PATCH_INFO_RGCTX_FETCH:
3421 case MONO_PATCH_INFO_RGCTX_SLOT_INDEX: {
3423 MonoJumpInfoRgctxEntry *entry;
3424 guint32 offset, val;
3427 offset = decode_value (p, &p);
3428 val = decode_value (p, &p);
3430 entry = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
3431 p2 = aot_module->blob + offset;
3432 entry->method = decode_resolve_method_ref (aot_module, p2, &p2);
3433 entry->in_mrgctx = ((val & 1) > 0) ? TRUE : FALSE;
3434 entry->info_type = (val >> 1) & 0xff;
3435 entry->data = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
3436 entry->data->type = (val >> 9) & 0xff;
3438 res = decode_patch (aot_module, mp, entry->data, p, &p);
3441 ji->data.rgctx_entry = entry;
3444 case MONO_PATCH_INFO_SEQ_POINT_INFO:
3445 case MONO_PATCH_INFO_AOT_MODULE:
3446 case MONO_PATCH_INFO_MSCORLIB_GOT_ADDR:
3448 case MONO_PATCH_INFO_LLVM_IMT_TRAMPOLINE: {
3449 MonoJumpInfoImtTramp *imt_tramp = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoImtTramp));
3451 imt_tramp->method = decode_resolve_method_ref (aot_module, p, &p);
3452 imt_tramp->vt_offset = decode_value (p, &p);
3454 ji->data.imt_tramp = imt_tramp;
3457 case MONO_PATCH_INFO_SIGNATURE:
3458 ji->data.target = decode_signature (aot_module, p, &p);
3460 case MONO_PATCH_INFO_TLS_OFFSET:
3461 ji->data.target = GINT_TO_POINTER (decode_value (p, &p));
3463 case MONO_PATCH_INFO_GSHAREDVT_CALL: {
3464 MonoJumpInfoGSharedVtCall *info = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoGSharedVtCall));
3465 info->sig = decode_signature (aot_module, p, &p);
3466 g_assert (info->sig);
3467 info->method = decode_resolve_method_ref (aot_module, p, &p);
3468 g_assert (info->method);
3470 ji->data.target = info;
3473 case MONO_PATCH_INFO_GSHAREDVT_METHOD: {
3474 MonoGSharedVtMethodInfo *info = mono_mempool_alloc0 (mp, sizeof (MonoGSharedVtMethodInfo));
3477 info->method = decode_resolve_method_ref (aot_module, p, &p);
3478 g_assert (info->method);
3479 info->num_entries = decode_value (p, &p);
3480 info->count_entries = info->num_entries;
3481 info->entries = mono_mempool_alloc0 (mp, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->num_entries);
3482 for (i = 0; i < info->num_entries; ++i) {
3483 MonoRuntimeGenericContextInfoTemplate *template = &info->entries [i];
3485 template->info_type = decode_value (p, &p);
3486 switch (mini_rgctx_info_type_to_patch_info_type (template->info_type)) {
3487 case MONO_PATCH_INFO_CLASS: {
3488 MonoClass *klass = decode_klass_ref (aot_module, p, &p);
3491 template->data = &klass->byval_arg;
3494 case MONO_PATCH_INFO_FIELD:
3495 template->data = decode_field_info (aot_module, p, &p);
3496 if (!template->data)
3500 g_assert_not_reached ();
3504 ji->data.target = info;
3507 case MONO_PATCH_INFO_LDSTR_LIT: {
3508 int len = decode_value (p, &p);
3511 s = mono_mempool_alloc0 (mp, len + 1);
3512 memcpy (s, p, len + 1);
3515 ji->data.target = s;
3518 case MONO_PATCH_INFO_VIRT_METHOD: {
3519 MonoJumpInfoVirtMethod *info = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoVirtMethod));
3521 info->klass = decode_klass_ref (aot_module, p, &p);
3522 g_assert (info->klass);
3523 info->method = decode_resolve_method_ref (aot_module, p, &p);
3524 g_assert (info->method);
3526 ji->data.target = info;
3529 case MONO_PATCH_INFO_GC_SAFE_POINT_FLAG:
3531 case MONO_PATCH_INFO_AOT_JIT_INFO:
3532 ji->data.index = decode_value (p, &p);
3535 g_warning ("unhandled type %d", ji->type);
3536 g_assert_not_reached ();
3550 * Decode a list of patches identified by the got offsets in GOT_OFFSETS. Return an array of
3551 * MonoJumpInfo structures allocated from MP.
3553 static MonoJumpInfo*
3554 decode_patches (MonoAotModule *amodule, MonoMemPool *mp, int n_patches, gboolean llvm, guint32 *got_offsets)
3556 MonoJumpInfo *patches;
3559 guint32 *got_info_offsets;
3564 got = amodule->llvm_got;
3565 got_info_offsets = amodule->info.llvm_got_info_offsets;
3568 got_info_offsets = amodule->info.got_info_offsets;
3571 patches = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo) * n_patches);
3572 for (i = 0; i < n_patches; ++i) {
3573 guint8 *p = amodule->blob + mono_aot_get_offset (got_info_offsets, got_offsets [i]);
3576 ji->type = decode_value (p, &p);
3578 /* See load_method () for SFLDA */
3579 if (got && got [got_offsets [i]] && ji->type != MONO_PATCH_INFO_SFLDA) {
3580 /* Already loaded */
3582 res = decode_patch (amodule, mp, ji, p, &p);
3591 static MonoJumpInfo*
3592 load_patch_info (MonoAotModule *amodule, MonoMemPool *mp, int n_patches,
3593 gboolean llvm, guint32 **got_slots,
3594 guint8 *buf, guint8 **endbuf)
3596 MonoJumpInfo *patches;
3602 *got_slots = g_malloc (sizeof (guint32) * n_patches);
3603 for (pindex = 0; pindex < n_patches; ++pindex) {
3604 (*got_slots)[pindex] = decode_value (p, &p);
3607 patches = decode_patches (amodule, mp, n_patches, llvm, *got_slots);
3609 g_free (*got_slots);
3619 register_jump_target_got_slot (MonoDomain *domain, MonoMethod *method, gpointer *got_slot)
3622 * Jump addresses cannot be patched by the trampoline code since it
3623 * does not have access to the caller's address. Instead, we collect
3624 * the addresses of the GOT slots pointing to a method, and patch
3625 * them after the method has been compiled.
3627 MonoJitDomainInfo *info = domain_jit_info (domain);
3630 mono_domain_lock (domain);
3631 if (!info->jump_target_got_slot_hash)
3632 info->jump_target_got_slot_hash = g_hash_table_new (NULL, NULL);
3633 list = g_hash_table_lookup (info->jump_target_got_slot_hash, method);
3634 list = g_slist_prepend (list, got_slot);
3635 g_hash_table_insert (info->jump_target_got_slot_hash, method, list);
3636 mono_domain_unlock (domain);
3642 * Load the method identified by METHOD_INDEX from the AOT image. Return a
3643 * pointer to the native code of the method, or NULL if not found.
3644 * METHOD might not be set if the caller only has the image/token info.
3647 load_method (MonoDomain *domain, MonoAotModule *amodule, MonoImage *image, MonoMethod *method, guint32 token, int method_index)
3649 MonoJitInfo *jinfo = NULL;
3650 guint8 *code = NULL, *info;
3653 init_amodule_got (amodule);
3655 if (mono_profiler_get_events () & MONO_PROFILE_ENTER_LEAVE) {
3657 /* The caller cannot handle this */
3658 g_assert_not_reached ();
3662 if (domain != mono_get_root_domain ())
3663 /* Non shared AOT code can't be used in other appdomains */
3666 if (amodule->out_of_date)
3669 if (amodule->info.llvm_get_method) {
3671 * Obtain the method address by calling a generated function in the LLVM module.
3673 gpointer (*get_method) (int) = amodule->info.llvm_get_method;
3674 code = get_method (method_index);
3679 if (amodule->methods [method_index] == GINT_TO_POINTER (-1)) {
3680 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
3684 method = mono_get_method (image, token, NULL);
3685 full_name = mono_method_full_name (method, TRUE);
3686 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT: NOT FOUND: %s.", full_name);
3691 code = amodule->methods [method_index];
3694 info = &amodule->blob [mono_aot_get_offset (amodule->method_info_offsets, method_index)];
3696 if (!amodule->methods_loaded) {
3697 amodule_lock (amodule);
3698 if (!amodule->methods_loaded) {
3701 loaded = g_new0 (guint32, amodule->info.nmethods / 32 + 1);
3702 mono_memory_barrier ();
3703 amodule->methods_loaded = loaded;
3705 amodule_unlock (amodule);
3708 if ((amodule->methods_loaded [method_index / 32] >> (method_index % 32)) & 0x1)
3711 if (mono_last_aot_method != -1) {
3712 if (mono_jit_stats.methods_aot >= mono_last_aot_method)
3714 else if (mono_jit_stats.methods_aot == mono_last_aot_method - 1) {
3716 method = mono_get_method (image, token, NULL);
3718 char *name = mono_method_full_name (method, TRUE);
3719 g_print ("LAST AOT METHOD: %s.\n", name);
3722 g_print ("LAST AOT METHOD: %p %d\n", code, method_index);
3727 if (!(is_llvm_code (amodule, code) && (amodule->info.flags & MONO_AOT_FILE_FLAG_LLVM_ONLY))) {
3728 res = init_llvm_method (amodule, method_index, method, NULL, NULL);
3733 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
3737 method = mono_get_method (image, token, NULL);
3739 full_name = mono_method_full_name (method, TRUE);
3742 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
3744 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT: FOUND method %s [%p - %p %p]", full_name, code, code + jinfo->code_size, info);
3748 amodule_lock (amodule);
3750 InterlockedIncrement (&mono_jit_stats.methods_aot);
3752 amodule->methods_loaded [method_index / 32] |= 1 << (method_index % 32);
3756 if (method && method->wrapper_type)
3757 g_hash_table_insert (amodule->method_to_code, method, code);
3759 amodule_unlock (amodule);
3761 if (mono_profiler_get_events () & MONO_PROFILE_JIT_COMPILATION) {
3765 method = mono_get_method (amodule->assembly->image, token, NULL);
3768 mono_profiler_method_jit (method);
3769 jinfo = mono_jit_info_table_find (domain, (char*)code);
3771 mono_profiler_method_end_jit (method, jinfo, MONO_PROFILE_OK);
3784 find_aot_method_in_amodule (MonoAotModule *amodule, MonoMethod *method, guint32 hash_full)
3786 guint32 table_size, entry_size, hash;
3787 guint32 *table, *entry;
3789 static guint32 n_extra_decodes;
3791 if (!amodule || amodule->out_of_date)
3794 table_size = amodule->extra_method_table [0];
3795 hash = hash_full % table_size;
3796 table = amodule->extra_method_table + 1;
3799 entry = &table [hash * entry_size];
3806 guint32 key = entry [0];
3807 guint32 value = entry [1];
3808 guint32 next = entry [entry_size - 1];
3812 p = amodule->blob + key;
3815 amodule_lock (amodule);
3816 if (!amodule->method_ref_to_method)
3817 amodule->method_ref_to_method = g_hash_table_new (NULL, NULL);
3818 m = g_hash_table_lookup (amodule->method_ref_to_method, p);
3819 amodule_unlock (amodule);
3821 m = decode_resolve_method_ref_with_target (amodule, method, p, &p);
3823 * Can't catche runtime invoke wrappers since it would break
3824 * the check in decode_method_ref_with_target ().
3826 if (m && m->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE) {
3827 amodule_lock (amodule);
3828 g_hash_table_insert (amodule->method_ref_to_method, orig_p, m);
3829 amodule_unlock (amodule);
3837 /* Special case: wrappers of shared generic methods */
3838 if (m && method->wrapper_type && m->wrapper_type == m->wrapper_type &&
3839 method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
3840 MonoMethod *w1 = mono_marshal_method_from_wrapper (method);
3841 MonoMethod *w2 = mono_marshal_method_from_wrapper (m);
3843 if ((w1 == w2) || (w1->is_inflated && ((MonoMethodInflated *)w1)->declaring == w2)) {
3849 /* Methods decoded needlessly */
3851 //printf ("%d %s %s %p\n", n_extra_decodes, mono_method_full_name (method, TRUE), mono_method_full_name (m, TRUE), orig_p);
3856 entry = &table [next * entry_size];
3865 add_module_cb (gpointer key, gpointer value, gpointer user_data)
3867 g_ptr_array_add ((GPtrArray*)user_data, value);
3873 * Try finding METHOD in the extra_method table in all AOT images.
3874 * Return its method index, or 0xffffff if not found. Set OUT_AMODULE to the AOT
3875 * module where the method was found.
3878 find_aot_method (MonoMethod *method, MonoAotModule **out_amodule)
3883 guint32 hash = mono_aot_method_hash (method);
3885 /* Try the method's module first */
3886 *out_amodule = method->klass->image->aot_module;
3887 index = find_aot_method_in_amodule (method->klass->image->aot_module, method, hash);
3888 if (index != 0xffffff)
3892 * Try all other modules.
3893 * This is needed because generic instances klass->image points to the image
3894 * containing the generic definition, but the native code is generated to the
3895 * AOT image which contains the reference.
3898 /* Make a copy to avoid doing the search inside the aot lock */
3899 modules = g_ptr_array_new ();
3901 g_hash_table_foreach (aot_modules, add_module_cb, modules);
3905 for (i = 0; i < modules->len; ++i) {
3906 MonoAotModule *amodule = g_ptr_array_index (modules, i);
3908 if (amodule != method->klass->image->aot_module)
3909 index = find_aot_method_in_amodule (amodule, method, hash);
3910 if (index != 0xffffff) {
3911 *out_amodule = amodule;
3916 g_ptr_array_free (modules, TRUE);
3922 mono_aot_find_method_index (MonoMethod *method)
3924 MonoAotModule *out_amodule;
3925 return find_aot_method (method, &out_amodule);
3929 init_llvm_method (MonoAotModule *amodule, guint32 method_index, MonoMethod *method, MonoClass *init_class, MonoGenericContext *context)
3931 MonoDomain *domain = mono_domain_get ();
3934 gboolean from_plt = method == NULL;
3935 int pindex, n_patches;
3937 MonoJitInfo *jinfo = NULL;
3938 guint8 *code, *info;
3940 code = amodule->methods [method_index];
3941 info = &amodule->blob [mono_aot_get_offset (amodule->method_info_offsets, method_index)];
3946 klass = method->klass;
3947 decode_klass_ref (amodule, p, &p);
3949 klass = decode_klass_ref (amodule, p, &p);
3952 n_patches = decode_value (p, &p);
3955 MonoJumpInfo *patches;
3960 mp = mono_mempool_new ();
3962 if ((gpointer)code >= amodule->info.jit_code_start && (gpointer)code <= amodule->info.jit_code_end) {
3967 got = amodule->llvm_got;
3971 patches = load_patch_info (amodule, mp, n_patches, llvm, &got_slots, p, &p);
3972 if (patches == NULL) {
3973 mono_mempool_destroy (mp);
3977 for (pindex = 0; pindex < n_patches; ++pindex) {
3978 MonoJumpInfo *ji = &patches [pindex];
3982 * For SFLDA, we need to call resolve_patch_target () since the GOT slot could have
3983 * been initialized by load_method () for a static cctor before the cctor has
3984 * finished executing (#23242).
3986 if (!got [got_slots [pindex]] || ji->type == MONO_PATCH_INFO_SFLDA) {
3987 /* In llvm-only made, we might encounter shared methods */
3988 if (mono_llvm_only && ji->type == MONO_PATCH_INFO_METHOD && mono_method_check_context_used (ji->data.method)) {
3992 ji->data.method = mono_class_inflate_generic_method_checked (ji->data.method, context, &error);
3994 /* This cannot be resolved in mono_resolve_patch_target () */
3995 if (ji->type == MONO_PATCH_INFO_AOT_JIT_INFO) {
3996 // FIXME: Lookup using the index
3997 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
3998 ji->type = MONO_PATCH_INFO_ABS;
3999 ji->data.target = jinfo;
4001 addr = mono_resolve_patch_target (method, domain, code, ji, TRUE);
4002 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
4003 addr = mono_create_ftnptr (domain, addr);
4004 mono_memory_barrier ();
4005 got [got_slots [pindex]] = addr;
4006 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
4007 register_jump_target_got_slot (domain, ji->data.method, &(got [got_slots [pindex]]));
4009 ji->type = MONO_PATCH_INFO_NONE;
4014 mono_mempool_destroy (mp);
4017 if (mini_get_debug_options ()->load_aot_jit_info_eagerly)
4018 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
4021 mono_runtime_class_init (mono_class_vtable (domain, init_class));
4022 else if (from_plt && klass && !klass->generic_container)
4023 mono_runtime_class_init (mono_class_vtable (domain, klass));
4035 mono_aot_init_llvm_method (gpointer aot_module, guint32 method_index)
4037 MonoAotModule *amodule = aot_module;
4040 // FIXME: Handle failure
4041 res = init_llvm_method (amodule, method_index, NULL, NULL, NULL);
4046 mono_aot_init_gshared_method_this (gpointer aot_module, guint32 method_index, MonoObject *this)
4048 MonoAotModule *amodule = aot_module;
4051 MonoGenericContext *context;
4056 klass = this->vtable->klass;
4058 amodule_lock (amodule);
4059 method = g_hash_table_lookup (amodule->extra_methods, GUINT_TO_POINTER (method_index));
4060 amodule_unlock (amodule);
4063 context = mono_method_get_context (method);
4066 res = init_llvm_method (amodule, method_index, NULL, klass, context);
4071 mono_aot_init_gshared_method_rgctx (gpointer aot_module, guint32 method_index, MonoMethodRuntimeGenericContext *rgctx)
4073 MonoAotModule *amodule = aot_module;
4075 MonoGenericContext context = { NULL, NULL };
4076 MonoClass *klass = rgctx->class_vtable->klass;
4078 if (klass->generic_class)
4079 context.class_inst = klass->generic_class->context.class_inst;
4080 else if (klass->generic_container)
4081 context.class_inst = klass->generic_container->context.class_inst;
4082 context.method_inst = rgctx->method_inst;
4084 res = init_llvm_method (amodule, method_index, NULL, rgctx->class_vtable->klass, &context);
4089 * mono_aot_get_method:
4091 * Return a pointer to the AOTed native code for METHOD if it can be found,
4093 * On platforms with function pointers, this doesn't return a function pointer.
4096 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
4098 MonoClass *klass = method->klass;
4099 guint32 method_index;
4100 MonoAotModule *amodule = klass->image->aot_module;
4103 if (enable_aot_cache && !amodule && domain->entry_assembly && klass->image == mono_defaults.corlib) {
4104 /* This cannot be AOTed during startup, so do it now */
4105 if (!mscorlib_aot_loaded) {
4106 mscorlib_aot_loaded = TRUE;
4107 load_aot_module (klass->image->assembly, NULL);
4108 amodule = klass->image->aot_module;
4115 if (amodule->out_of_date)
4118 if ((method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
4119 (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
4120 (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
4121 (method->flags & METHOD_ATTRIBUTE_ABSTRACT))
4125 * Use the original method instead of its invoke-with-check wrapper.
4126 * This is not a problem when using full-aot, since it doesn't support
4129 if (mono_aot_only && method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)
4130 return mono_aot_get_method (domain, mono_marshal_method_from_wrapper (method));
4132 g_assert (klass->inited);
4134 /* Find method index */
4135 method_index = 0xffffff;
4136 if (method->is_inflated && !method->wrapper_type && mono_method_is_generic_sharable_full (method, TRUE, FALSE, FALSE)) {
4137 MonoMethod *orig_method = method;
4139 * For generic methods, we store the fully shared instance in place of the
4142 method = mono_method_get_declaring_generic_method (method);
4143 method_index = mono_metadata_token_index (method->token) - 1;
4145 if (mono_llvm_only) {
4146 /* Needed by mono_aot_init_gshared_method_this () */
4147 /* orig_method is a random instance but it is enough to make init_llvm_method () work */
4148 amodule_lock (amodule);
4149 g_hash_table_insert (amodule->extra_methods, GUINT_TO_POINTER (method_index), orig_method);
4150 amodule_unlock (amodule);
4152 } else if (method->is_inflated || !method->token) {
4153 /* This hash table is used to avoid the slower search in the extra_method_table in the AOT image */
4154 amodule_lock (amodule);
4155 code = g_hash_table_lookup (amodule->method_to_code, method);
4156 amodule_unlock (amodule);
4160 method_index = find_aot_method (method, &amodule);
4162 * Special case the ICollection<T> wrappers for arrays, as they cannot
4163 * be statically enumerated, and each wrapper ends up calling the same
4166 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED && method->klass->rank && strstr (method->name, "System.Collections.Generic")) {
4167 MonoMethod *m = mono_aot_get_array_helper_from_wrapper (method);
4169 code = mono_aot_get_method (domain, m);
4175 * Special case Array.GetGenericValueImpl which is a generic icall.
4176 * Generic sharing currently can't handle it, but the icall returns data using
4177 * an out parameter, so the managed-to-native wrappers can share the same code.
4179 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass == mono_defaults.array_class && !strcmp (method->name, "GetGenericValueImpl")) {
4182 MonoGenericContext ctx;
4183 MonoType *args [16];
4185 if (mono_method_signature (method)->params [1]->type == MONO_TYPE_OBJECT)
4186 /* Avoid recursion */
4189 m = mono_class_get_method_from_name (mono_defaults.array_class, "GetGenericValueImpl", 2);
4192 memset (&ctx, 0, sizeof (ctx));
4193 args [0] = &mono_defaults.object_class->byval_arg;
4194 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
4196 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method_checked (m, &ctx, &error), TRUE, TRUE);
4197 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
4200 * Get the code for the <object> instantiation which should be emitted into
4201 * the mscorlib aot image by the AOT compiler.
4203 code = mono_aot_get_method (domain, m);
4208 /* Same for CompareExchange<T> and Exchange<T> */
4209 /* Same for Volatile.Read<T>/Write<T> */
4210 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass->image == mono_defaults.corlib &&
4211 ((!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]))) ||
4212 (!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)))) ||
4213 (!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])))))) {
4216 MonoGenericContext ctx;
4217 MonoType *args [16];
4218 gpointer iter = NULL;
4220 while ((m = mono_class_get_methods (method->klass, &iter))) {
4221 if (mono_method_signature (m)->generic_param_count && !strcmp (m->name, method->name))
4226 memset (&ctx, 0, sizeof (ctx));
4227 args [0] = &mono_defaults.object_class->byval_arg;
4228 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
4230 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method_checked (m, &ctx, &error), TRUE, TRUE);
4231 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
4233 /* Avoid recursion */
4238 * Get the code for the <object> instantiation which should be emitted into
4239 * the mscorlib aot image by the AOT compiler.
4241 code = mono_aot_get_method (domain, m);
4246 if (method_index == 0xffffff && method->is_inflated && mono_method_is_generic_sharable_full (method, FALSE, TRUE, FALSE)) {
4247 /* Partial sharing */
4250 shared = mini_get_shared_method (method);
4251 method_index = find_aot_method (shared, &amodule);
4252 if (method_index != 0xffffff)
4256 if (method_index == 0xffffff && method->is_inflated && mono_method_is_generic_sharable_full (method, FALSE, FALSE, TRUE)) {
4258 /* Use the all-vt shared method since this is what was AOTed */
4259 method_index = find_aot_method (mini_get_shared_method_full (method, TRUE, TRUE), &amodule);
4260 if (method_index != 0xffffff)
4261 method = mini_get_shared_method_full (method, TRUE, FALSE);
4264 if (method_index == 0xffffff) {
4265 if (mono_aot_only && mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
4268 full_name = mono_method_full_name (method, TRUE);
4269 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.", full_name);
4275 if (method_index == 0xffffff)
4278 /* Needed by find_jit_info */
4279 amodule_lock (amodule);
4280 g_hash_table_insert (amodule->extra_methods, GUINT_TO_POINTER (method_index), method);
4281 amodule_unlock (amodule);
4284 method_index = mono_metadata_token_index (method->token) - 1;
4287 return load_method (domain, amodule, klass->image, method, method->token, method_index);
4291 * Same as mono_aot_get_method, but we try to avoid loading any metadata from the
4295 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
4297 MonoAotModule *aot_module = image->aot_module;
4303 method_index = mono_metadata_token_index (token) - 1;
4305 return load_method (domain, aot_module, image, NULL, token, method_index);
4311 } IsGotEntryUserData;
4314 check_is_got_entry (gpointer key, gpointer value, gpointer user_data)
4316 IsGotEntryUserData *data = (IsGotEntryUserData*)user_data;
4317 MonoAotModule *aot_module = (MonoAotModule*)value;
4319 if (aot_module->got && (data->addr >= (guint8*)(aot_module->got)) && (data->addr < (guint8*)(aot_module->got + aot_module->info.got_size)))
4324 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
4326 IsGotEntryUserData user_data;
4331 user_data.addr = addr;
4332 user_data.res = FALSE;
4334 g_hash_table_foreach (aot_modules, check_is_got_entry, &user_data);
4337 return user_data.res;
4342 MonoAotModule *module;
4343 } FindAotModuleUserData;
4346 find_aot_module_cb (gpointer key, gpointer value, gpointer user_data)
4348 FindAotModuleUserData *data = (FindAotModuleUserData*)user_data;
4349 MonoAotModule *aot_module = (MonoAotModule*)value;
4351 if (amodule_contains_code_addr (aot_module, data->addr))
4352 data->module = aot_module;
4355 static inline MonoAotModule*
4356 find_aot_module (guint8 *code)
4358 FindAotModuleUserData user_data;
4363 /* Reading these need no locking */
4364 if (((gsize)code < aot_code_low_addr) || ((gsize)code > aot_code_high_addr))
4367 user_data.addr = code;
4368 user_data.module = NULL;
4371 g_hash_table_foreach (aot_modules, find_aot_module_cb, &user_data);
4374 return user_data.module;
4378 mono_aot_patch_plt_entry (guint8 *code, guint8 *plt_entry, gpointer *got, mgreg_t *regs, guint8 *addr)
4380 MonoAotModule *amodule;
4383 * Since AOT code is only used in the root domain,
4384 * mono_domain_get () != mono_get_root_domain () means the calling method
4385 * is AppDomain:InvokeInDomain, so this is the same check as in
4386 * mono_method_same_domain () but without loading the metadata for the method.
4388 if (mono_domain_get () == mono_get_root_domain ()) {
4390 amodule = find_aot_module (code);
4394 mono_arch_patch_plt_entry (plt_entry, got, regs, addr);
4399 * mono_aot_plt_resolve:
4401 * This function is called by the entries in the PLT to resolve the actual method that
4402 * needs to be called. It returns a trampoline to the method and patches the PLT entry.
4403 * Returns NULL if the something cannot be loaded.
4406 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
4408 #ifdef MONO_ARCH_AOT_SUPPORTED
4409 guint8 *p, *target, *plt_entry;
4411 MonoAotModule *module = (MonoAotModule*)aot_module;
4412 gboolean res, no_ftnptr = FALSE;
4414 gboolean using_gsharedvt = FALSE;
4416 //printf ("DYN: %p %d\n", aot_module, plt_info_offset);
4418 p = &module->blob [plt_info_offset];
4420 ji.type = decode_value (p, &p);
4422 mp = mono_mempool_new ();
4423 res = decode_patch (module, mp, &ji, p, &p);
4426 mono_mempool_destroy (mp);
4430 #ifdef MONO_ARCH_GSHAREDVT_SUPPORTED
4431 using_gsharedvt = TRUE;
4435 * Avoid calling resolve_patch_target in the full-aot case if possible, since
4436 * it would create a trampoline, and we don't need that.
4437 * We could do this only if the method does not need the special handling
4438 * in mono_magic_trampoline ().
4440 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) &&
4441 !mono_method_needs_static_rgctx_invoke (ji.data.method, FALSE) && !using_gsharedvt) {
4442 target = mono_jit_compile_method (ji.data.method);
4445 target = mono_resolve_patch_target (NULL, mono_domain_get (), NULL, &ji, TRUE);
4449 * The trampoline expects us to return a function descriptor on platforms which use
4450 * it, but resolve_patch_target returns a direct function pointer for some type of
4451 * patches, so have to translate between the two.
4452 * FIXME: Clean this up, but how ?
4454 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) {
4455 /* These should already have a function descriptor */
4456 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
4457 /* Our function descriptors have a 0 environment, gcc created ones don't */
4458 if (ji.type != MONO_PATCH_INFO_INTERNAL_METHOD && ji.type != MONO_PATCH_INFO_JIT_ICALL_ADDR && ji.type != MONO_PATCH_INFO_ICALL_ADDR)
4459 g_assert (((gpointer*)target) [2] == 0);
4462 } else if (!no_ftnptr) {
4463 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
4464 g_assert (((gpointer*)target) [2] != 0);
4466 target = mono_create_ftnptr (mono_domain_get (), target);
4469 mono_mempool_destroy (mp);
4471 /* Patch the PLT entry with target which might be the actual method not a trampoline */
4472 plt_entry = mono_aot_get_plt_entry (code);
4473 g_assert (plt_entry);
4474 mono_aot_patch_plt_entry (code, plt_entry, module->got, NULL, target);
4478 g_assert_not_reached ();
4486 * Initialize the PLT table of the AOT module. Called lazily when the first AOT
4487 * method in the module is loaded to avoid committing memory by writing to it.
4488 * LOCKING: Assumes the AMODULE lock is held.
4491 init_plt (MonoAotModule *amodule)
4496 if (amodule->plt_inited)
4499 if (amodule->info.plt_size <= 1) {
4500 amodule->plt_inited = TRUE;
4504 tramp = mono_create_specific_trampoline (amodule, MONO_TRAMPOLINE_AOT_PLT, mono_get_root_domain (), NULL);
4507 * Initialize the PLT entries in the GOT to point to the default targets.
4510 tramp = mono_create_ftnptr (mono_domain_get (), tramp);
4511 for (i = 1; i < amodule->info.plt_size; ++i)
4512 /* All the default entries point to the AOT trampoline */
4513 ((gpointer*)amodule->got)[amodule->info.plt_got_offset_base + i] = tramp;
4515 amodule->plt_inited = TRUE;
4519 * mono_aot_get_plt_entry:
4521 * Return the address of the PLT entry called by the code at CODE if exists.
4524 mono_aot_get_plt_entry (guint8 *code)
4526 MonoAotModule *amodule = find_aot_module (code);
4527 guint8 *target = NULL;
4533 if (is_thumb_code (amodule, code))
4534 return mono_arm_get_thumb_plt_entry (code);
4537 #ifdef MONO_ARCH_AOT_SUPPORTED
4538 target = mono_arch_get_call_target (code);
4540 g_assert_not_reached ();
4544 while (target != NULL) {
4545 if ((target >= (guint8*)(amodule->plt)) && (target < (guint8*)(amodule->plt_end)))
4548 // Add 4 since mono_arch_get_call_target assumes we're passing
4549 // the instruction after the actual branch instruction.
4550 target = mono_arch_get_call_target (target + 4);
4555 if ((target >= (guint8*)(amodule->plt)) && (target < (guint8*)(amodule->plt_end)))
4563 * mono_aot_get_plt_info_offset:
4565 * Return the PLT info offset belonging to the plt entry called by CODE.
4568 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
4570 guint8 *plt_entry = mono_aot_get_plt_entry (code);
4572 g_assert (plt_entry);
4574 /* The offset is embedded inside the code after the plt entry */
4575 #ifdef MONO_ARCH_AOT_SUPPORTED
4576 return mono_arch_get_plt_info_offset (plt_entry, regs, code);
4578 g_assert_not_reached ();
4584 mono_create_ftnptr_malloc (guint8 *code)
4586 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
4587 MonoPPCFunctionDescriptor *ftnptr = g_malloc0 (sizeof (MonoPPCFunctionDescriptor));
4589 ftnptr->code = code;
4600 * mono_aot_register_jit_icall:
4602 * Register a JIT icall which is called by trampolines in full-aot mode. This should
4603 * be called from mono_arch_init () during startup.
4606 mono_aot_register_jit_icall (const char *name, gpointer addr)
4608 /* No need for locking */
4609 if (!aot_jit_icall_hash)
4610 aot_jit_icall_hash = g_hash_table_new (g_str_hash, g_str_equal);
4611 g_hash_table_insert (aot_jit_icall_hash, (char*)name, addr);
4615 * load_function_full:
4617 * Load the function named NAME from the aot image.
4620 load_function_full (MonoAotModule *amodule, const char *name, MonoTrampInfo **out_tinfo)
4624 int n_patches, pindex;
4627 guint32 info_offset;
4631 symbol = g_strdup_printf ("%s", name);
4632 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&code);
4635 g_error ("Symbol '%s' not found in AOT file '%s'.\n", name, amodule->aot_name);
4637 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT: FOUND function '%s' in AOT file '%s'.", name, amodule->aot_name);
4641 symbol = g_strdup_printf ("%s_p", name);
4642 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&p);
4645 /* Nothing to patch */
4648 info_offset = *(guint32*)p;
4650 MonoTrampInfo *tinfo;
4651 guint32 code_size, uw_info_len, uw_offset;
4653 /* Construct a MonoTrampInfo from the data in the AOT image */
4655 p += sizeof (guint32);
4656 code_size = *(guint32*)p;
4657 p += sizeof (guint32);
4658 uw_offset = *(guint32*)p;
4659 uw_info = amodule->unwind_info + uw_offset;
4660 uw_info_len = decode_value (uw_info, &uw_info);
4662 tinfo = g_new0 (MonoTrampInfo, 1);
4664 tinfo->code_size = code_size;
4665 tinfo->uw_info = uw_info;
4666 tinfo->uw_info_len = uw_info_len;
4671 p = amodule->blob + info_offset;
4673 /* Similar to mono_aot_load_method () */
4675 n_patches = decode_value (p, &p);
4678 MonoJumpInfo *patches;
4681 mp = mono_mempool_new ();
4683 patches = load_patch_info (amodule, mp, n_patches, FALSE, &got_slots, p, &p);
4686 for (pindex = 0; pindex < n_patches; ++pindex) {
4687 MonoJumpInfo *ji = &patches [pindex];
4690 if (amodule->got [got_slots [pindex]])
4694 * When this code is executed, the runtime may not be initalized yet, so
4695 * resolve the patch info by hand.
4697 if (ji->type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
4698 if (!strcmp (ji->data.name, "mono_get_lmf_addr")) {
4699 target = mono_get_lmf_addr;
4700 } else if (!strcmp (ji->data.name, "mono_thread_force_interruption_checkpoint")) {
4701 target = mono_thread_force_interruption_checkpoint;
4702 } else if (!strcmp (ji->data.name, "mono_exception_from_token")) {
4703 target = mono_exception_from_token;
4704 } else if (!strcmp (ji->data.name, "mono_throw_exception")) {
4705 target = mono_get_throw_exception ();
4706 } else if (strstr (ji->data.name, "trampoline_func_") == ji->data.name) {
4707 int tramp_type2 = atoi (ji->data.name + strlen ("trampoline_func_"));
4708 target = (gpointer)mono_get_trampoline_func (tramp_type2);
4709 } else if (strstr (ji->data.name, "specific_trampoline_lazy_fetch_") == ji->data.name) {
4710 /* atoll is needed because the the offset is unsigned */
4714 res = sscanf (ji->data.name, "specific_trampoline_lazy_fetch_%u", &slot);
4715 g_assert (res == 1);
4716 target = mono_create_specific_trampoline (GUINT_TO_POINTER (slot), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, mono_get_root_domain (), NULL);
4717 target = mono_create_ftnptr_malloc (target);
4718 } else if (!strcmp (ji->data.name, "mono_thread_get_and_clear_pending_exception")) {
4719 target = mono_thread_get_and_clear_pending_exception;
4720 } else if (!strcmp (ji->data.name, "debugger_agent_single_step_from_context")) {
4721 target = debugger_agent_single_step_from_context;
4722 } else if (!strcmp (ji->data.name, "debugger_agent_breakpoint_from_context")) {
4723 target = debugger_agent_breakpoint_from_context;
4724 } else if (strstr (ji->data.name, "generic_trampoline_")) {
4725 target = mono_aot_get_trampoline (ji->data.name);
4726 } else if (aot_jit_icall_hash && g_hash_table_lookup (aot_jit_icall_hash, ji->data.name)) {
4727 /* Registered by mono_arch_init () */
4728 target = g_hash_table_lookup (aot_jit_icall_hash, ji->data.name);
4730 fprintf (stderr, "Unknown relocation '%s'\n", ji->data.name);
4731 g_assert_not_reached ();
4735 /* Hopefully the code doesn't have patches which need method or
4738 target = mono_resolve_patch_target (NULL, NULL, code, ji, FALSE);
4742 amodule->got [got_slots [pindex]] = target;
4747 mono_mempool_destroy (mp);
4754 load_function (MonoAotModule *amodule, const char *name)
4756 return load_function_full (amodule, name, NULL);
4759 static MonoAotModule*
4760 get_mscorlib_aot_module (void)
4763 MonoAotModule *amodule;
4765 image = mono_defaults.corlib;
4767 amodule = image->aot_module;
4769 amodule = mscorlib_aot_module;
4775 no_trampolines (void)
4777 g_assert_not_reached ();
4781 * Return the trampoline identified by NAME from the mscorlib AOT file.
4782 * On ppc64, this returns a function descriptor.
4785 mono_aot_get_trampoline_full (const char *name, MonoTrampInfo **out_tinfo)
4787 MonoAotModule *amodule = get_mscorlib_aot_module ();
4789 if (mono_llvm_only) {
4791 return no_trampolines;
4794 return mono_create_ftnptr_malloc (load_function_full (amodule, name, out_tinfo));
4798 mono_aot_get_trampoline (const char *name)
4800 MonoTrampInfo *out_tinfo;
4803 code = mono_aot_get_trampoline_full (name, &out_tinfo);
4804 mono_tramp_info_register (out_tinfo, NULL);
4810 read_unwind_info (MonoAotModule *amodule, MonoTrampInfo *info, const char *symbol_name)
4812 gpointer symbol_addr;
4813 guint32 uw_offset, uw_info_len;
4816 find_symbol (amodule->sofile, amodule->globals, symbol_name, &symbol_addr);
4821 uw_offset = *(guint32*)symbol_addr;
4822 uw_info = amodule->unwind_info + uw_offset;
4823 uw_info_len = decode_value (uw_info, &uw_info);
4825 info->uw_info = uw_info;
4826 info->uw_info_len = uw_info_len;
4828 /* If successful return the address of the following data */
4829 return (guint32*)symbol_addr + 1;
4833 #include <mach/mach.h>
4835 static TrampolinePage* trampoline_pages [MONO_AOT_TRAMP_NUM];
4838 read_page_trampoline_uwinfo (MonoTrampInfo *info, int tramp_type, gboolean is_generic)
4840 char symbol_name [128];
4842 if (tramp_type == MONO_AOT_TRAMP_SPECIFIC)
4843 sprintf (symbol_name, "specific_trampolines_page_%s_p", is_generic ? "gen" : "sp");
4844 else if (tramp_type == MONO_AOT_TRAMP_STATIC_RGCTX)
4845 sprintf (symbol_name, "rgctx_trampolines_page_%s_p", is_generic ? "gen" : "sp");
4846 else if (tramp_type == MONO_AOT_TRAMP_IMT_THUNK)
4847 sprintf (symbol_name, "imt_trampolines_page_%s_p", is_generic ? "gen" : "sp");
4848 else if (tramp_type == MONO_AOT_TRAMP_GSHAREDVT_ARG)
4849 sprintf (symbol_name, "gsharedvt_trampolines_page_%s_p", is_generic ? "gen" : "sp");
4851 g_assert_not_reached ();
4853 read_unwind_info (mono_defaults.corlib->aot_module, info, symbol_name);
4856 static unsigned char*
4857 get_new_trampoline_from_page (int tramp_type)
4859 MonoAotModule *amodule;
4861 TrampolinePage *page;
4864 vm_address_t addr, taddr;
4866 vm_prot_t prot, max_prot;
4867 int psize, specific_trampoline_size;
4868 unsigned char *code;
4870 specific_trampoline_size = 2 * sizeof (gpointer);
4872 mono_aot_page_lock ();
4873 page = trampoline_pages [tramp_type];
4874 if (page && page->trampolines < page->trampolines_end) {
4875 code = page->trampolines;
4876 page->trampolines += specific_trampoline_size;
4877 mono_aot_page_unlock ();
4880 mono_aot_page_unlock ();
4881 /* the trampoline template page is in the mscorlib module */
4882 image = mono_defaults.corlib;
4885 psize = MONO_AOT_TRAMP_PAGE_SIZE;
4887 amodule = image->aot_module;
4890 if (tramp_type == MONO_AOT_TRAMP_SPECIFIC)
4891 tpage = load_function (amodule, "specific_trampolines_page");
4892 else if (tramp_type == MONO_AOT_TRAMP_STATIC_RGCTX)
4893 tpage = load_function (amodule, "rgctx_trampolines_page");
4894 else if (tramp_type == MONO_AOT_TRAMP_IMT_THUNK)
4895 tpage = load_function (amodule, "imt_trampolines_page");
4896 else if (tramp_type == MONO_AOT_TRAMP_GSHAREDVT_ARG)
4897 tpage = load_function (amodule, "gsharedvt_arg_trampolines_page");
4899 g_error ("Incorrect tramp type for trampolines page");
4901 /*g_warning ("loaded trampolines page at %x", tpage);*/
4903 /* avoid the unlikely case of looping forever */
4906 while (page == NULL && count-- > 0) {
4907 MonoTrampInfo *gen_info, *sp_info;
4910 /* allocate two contiguous pages of memory: the first page will contain the data (like a local constant pool)
4911 * while the second will contain the trampolines.
4913 ret = vm_allocate (mach_task_self (), &addr, psize * 2, VM_FLAGS_ANYWHERE);
4914 if (ret != KERN_SUCCESS) {
4915 g_error ("Cannot allocate memory for trampolines: %d", ret);
4918 /*g_warning ("allocated trampoline double page at %x", addr);*/
4919 /* replace the second page with a remapped trampoline page */
4920 taddr = addr + psize;
4921 vm_deallocate (mach_task_self (), taddr, psize);
4922 ret = vm_remap (mach_task_self (), &taddr, psize, 0, FALSE, mach_task_self(), (vm_address_t)tpage, FALSE, &prot, &max_prot, VM_INHERIT_SHARE);
4923 if (ret != KERN_SUCCESS) {
4924 /* someone else got the page, try again */
4925 vm_deallocate (mach_task_self (), addr, psize);
4928 /*g_warning ("remapped trampoline page at %x", taddr);*/
4930 mono_aot_page_lock ();
4931 page = trampoline_pages [tramp_type];
4932 /* some other thread already allocated, so use that to avoid wasting memory */
4933 if (page && page->trampolines < page->trampolines_end) {
4934 code = page->trampolines;
4935 page->trampolines += specific_trampoline_size;
4936 mono_aot_page_unlock ();
4937 vm_deallocate (mach_task_self (), addr, psize);
4938 vm_deallocate (mach_task_self (), taddr, psize);
4941 page = (TrampolinePage*)addr;
4942 page->next = trampoline_pages [tramp_type];
4943 trampoline_pages [tramp_type] = page;
4944 page->trampolines = (void*)(taddr + amodule->info.tramp_page_code_offsets [tramp_type]);
4945 page->trampolines_end = (void*)(taddr + psize - 64);
4946 code = page->trampolines;
4947 page->trampolines += specific_trampoline_size;
4948 mono_aot_page_unlock ();
4950 /* Register the generic part at the beggining of the trampoline page */
4951 gen_info = mono_tramp_info_create (NULL, (guint8*)taddr, amodule->info.tramp_page_code_offsets [tramp_type], NULL, NULL);
4952 read_page_trampoline_uwinfo (gen_info, tramp_type, TRUE);
4953 mono_tramp_info_register (gen_info, NULL);
4956 * Registering each specific trampoline produces a lot of
4957 * MonoJitInfo structures. Jump trampolines are also registered
4960 if (tramp_type != MONO_AOT_TRAMP_SPECIFIC) {
4961 /* Register the rest of the page as a single trampoline */
4962 sp_info = mono_tramp_info_create (NULL, code, page->trampolines_end - code, NULL, NULL);
4963 read_page_trampoline_uwinfo (sp_info, tramp_type, FALSE);
4964 mono_tramp_info_register (sp_info, NULL);
4968 g_error ("Cannot allocate more trampoline pages: %d", ret);
4973 static unsigned char*
4974 get_new_trampoline_from_page (int tramp_type)
4976 g_error ("Page trampolines not supported.");
4983 get_new_specific_trampoline_from_page (gpointer tramp, gpointer arg)
4988 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_SPECIFIC);
4990 data = (gpointer*)((char*)code - MONO_AOT_TRAMP_PAGE_SIZE);
4993 /*g_warning ("new trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
4999 get_new_rgctx_trampoline_from_page (gpointer tramp, gpointer arg)
5004 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_STATIC_RGCTX);
5006 data = (gpointer*)((char*)code - MONO_AOT_TRAMP_PAGE_SIZE);
5009 /*g_warning ("new rgctx trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
5015 get_new_imt_trampoline_from_page (gpointer arg)
5020 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_IMT_THUNK);
5022 data = (gpointer*)((char*)code - MONO_AOT_TRAMP_PAGE_SIZE);
5024 /*g_warning ("new imt trampoline at %p for data %p, (stored at %p)", code, arg, data);*/
5030 get_new_gsharedvt_arg_trampoline_from_page (gpointer tramp, gpointer arg)
5035 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_GSHAREDVT_ARG);
5037 data = (gpointer*)((char*)code - MONO_AOT_TRAMP_PAGE_SIZE);
5040 /*g_warning ("new rgctx trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
5044 /* Return a given kind of trampoline */
5045 /* FIXME set unwind info for these trampolines */
5047 get_numerous_trampoline (MonoAotTrampoline tramp_type, int n_got_slots, MonoAotModule **out_amodule, guint32 *got_offset, guint32 *out_tramp_size)
5050 MonoAotModule *amodule = get_mscorlib_aot_module ();
5051 int index, tramp_size;
5053 /* Currently, we keep all trampolines in the mscorlib AOT image */
5054 image = mono_defaults.corlib;
5056 *out_amodule = amodule;
5061 #define MONOTOUCH_TRAMPOLINES_ERROR ". See http://docs.xamarin.com/ios/troubleshooting for instructions on how to fix this condition."
5063 #define MONOTOUCH_TRAMPOLINES_ERROR ""
5065 if (amodule->trampoline_index [tramp_type] == amodule->info.num_trampolines [tramp_type]) {
5066 g_error ("Ran out of trampolines of type %d in '%s' (%d)%s\n",
5067 tramp_type, image ? image->name : "mscorlib", amodule->info.num_trampolines [tramp_type], MONOTOUCH_TRAMPOLINES_ERROR);
5069 index = amodule->trampoline_index [tramp_type] ++;
5073 *got_offset = amodule->info.trampoline_got_offset_base [tramp_type] + (index * n_got_slots);
5075 tramp_size = amodule->info.trampoline_size [tramp_type];
5078 *out_tramp_size = tramp_size;
5080 return amodule->trampolines [tramp_type] + (index * tramp_size);
5084 no_specific_trampoline (void)
5086 g_assert_not_reached ();
5090 * Return a specific trampoline from the AOT file.
5093 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
5095 MonoAotModule *amodule;
5096 guint32 got_offset, tramp_size;
5097 guint8 *code, *tramp;
5098 static gpointer generic_trampolines [MONO_TRAMPOLINE_NUM];
5099 static gboolean inited;
5100 static guint32 num_trampolines;
5102 if (mono_llvm_only) {
5104 return no_specific_trampoline;
5111 mono_counters_register ("Specific trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &num_trampolines);
5120 if (!generic_trampolines [tramp_type]) {
5123 symbol = mono_get_generic_trampoline_name (tramp_type);
5124 generic_trampolines [tramp_type] = mono_aot_get_trampoline (symbol);
5128 tramp = generic_trampolines [tramp_type];
5131 if (USE_PAGE_TRAMPOLINES) {
5132 code = get_new_specific_trampoline_from_page (tramp, arg1);
5135 code = get_numerous_trampoline (MONO_AOT_TRAMP_SPECIFIC, 2, &amodule, &got_offset, &tramp_size);
5137 amodule->got [got_offset] = tramp;
5138 amodule->got [got_offset + 1] = arg1;
5142 *code_len = tramp_size;
5148 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
5150 MonoAotModule *amodule;
5154 if (USE_PAGE_TRAMPOLINES) {
5155 code = get_new_rgctx_trampoline_from_page (addr, ctx);
5157 code = get_numerous_trampoline (MONO_AOT_TRAMP_STATIC_RGCTX, 2, &amodule, &got_offset, NULL);
5159 amodule->got [got_offset] = ctx;
5160 amodule->got [got_offset + 1] = addr;
5163 /* The caller expects an ftnptr */
5164 return mono_create_ftnptr (mono_domain_get (), code);
5168 mono_aot_get_unbox_trampoline (MonoMethod *method)
5170 guint32 method_index = mono_metadata_token_index (method->token) - 1;
5171 MonoAotModule *amodule;
5173 guint32 *ut, *ut_end, *entry;
5174 int low, high, entry_index = 0;
5175 gpointer symbol_addr;
5176 MonoTrampInfo *tinfo;
5178 if (method->is_inflated && !mono_method_is_generic_sharable_full (method, FALSE, FALSE, FALSE)) {
5179 method_index = find_aot_method (method, &amodule);
5180 if (method_index == 0xffffff && mono_method_is_generic_sharable_full (method, FALSE, TRUE, FALSE)) {
5181 MonoMethod *shared = mini_get_shared_method_full (method, FALSE, FALSE);
5182 method_index = find_aot_method (shared, &amodule);
5184 if (method_index == 0xffffff && mono_method_is_generic_sharable_full (method, FALSE, TRUE, TRUE)) {
5185 MonoMethod *shared = mini_get_shared_method_full (method, TRUE, TRUE);
5186 method_index = find_aot_method (shared, &amodule);
5188 g_assert (method_index != 0xffffff);
5190 amodule = method->klass->image->aot_module;
5194 if (amodule->info.llvm_get_unbox_tramp) {
5195 gpointer (*get_tramp) (int) = amodule->info.llvm_get_unbox_tramp;
5196 code = get_tramp (method_index);
5202 ut = amodule->unbox_trampolines;
5203 ut_end = amodule->unbox_trampolines_end;
5205 /* Do a binary search in the sorted table */
5208 high = (ut_end - ut);
5209 while (low < high) {
5210 entry_index = (low + high) / 2;
5211 entry = &ut [entry_index];
5212 if (entry [0] < method_index) {
5213 low = entry_index + 1;
5214 } else if (entry [0] > method_index) {
5221 code = get_call_table_entry (amodule->unbox_trampoline_addresses, entry_index);
5224 tinfo = mono_tramp_info_create (NULL, code, 0, NULL, NULL);
5226 symbol_addr = read_unwind_info (amodule, tinfo, "unbox_trampoline_p");
5228 mono_tramp_info_free (tinfo);
5232 tinfo->code_size = *(guint32*)symbol_addr;
5233 mono_tramp_info_register (tinfo, NULL);
5235 /* The caller expects an ftnptr */
5236 return mono_create_ftnptr (mono_domain_get (), code);
5240 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
5244 MonoAotModule *amodule = mono_defaults.corlib->aot_module;
5245 guint32 index = MONO_RGCTX_SLOT_INDEX (slot);
5246 static int count = 0;
5249 if (index >= amodule->info.num_rgctx_fetch_trampolines) {
5250 static gpointer addr;
5254 * Use the general version of the rgctx fetch trampoline. It receives a pair of <slot, trampoline> in the rgctx arg reg.
5257 addr = load_function (amodule, "rgctx_fetch_trampoline_general");
5258 info = mono_domain_alloc0 (mono_get_root_domain (), sizeof (gpointer) * 2);
5259 info [0] = GUINT_TO_POINTER (slot);
5260 info [1] = mono_create_specific_trampoline (GUINT_TO_POINTER (slot), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, mono_get_root_domain (), NULL);
5261 code = mono_aot_get_static_rgctx_trampoline (info, addr);
5262 return mono_create_ftnptr (mono_domain_get (), code);
5265 symbol = mono_get_rgctx_fetch_trampoline_name (slot);
5266 code = load_function (mono_defaults.corlib->aot_module, symbol);
5268 /* The caller expects an ftnptr */
5269 return mono_create_ftnptr (mono_domain_get (), code);
5275 g_assert_not_reached ();
5279 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
5284 int i, index, real_count;
5285 MonoAotModule *amodule;
5288 return no_imt_thunk;
5291 for (i = 0; i < count; ++i) {
5292 MonoIMTCheckItem *item = imt_entries [i];
5294 if (item->is_equals)
5298 /* Save the entries into an array */
5299 buf = mono_domain_alloc (domain, (real_count + 1) * 2 * sizeof (gpointer));
5301 for (i = 0; i < count; ++i) {
5302 MonoIMTCheckItem *item = imt_entries [i];
5304 if (!item->is_equals)
5307 g_assert (item->key);
5309 buf [(index * 2)] = item->key;
5310 if (item->has_target_code) {
5311 gpointer *p = mono_domain_alloc (domain, sizeof (gpointer));
5312 *p = item->value.target_code;
5313 buf [(index * 2) + 1] = p;
5315 buf [(index * 2) + 1] = &(vtable->vtable [item->value.vtable_slot]);
5319 buf [(index * 2)] = NULL;
5320 buf [(index * 2) + 1] = fail_tramp;
5322 if (USE_PAGE_TRAMPOLINES) {
5323 code = get_new_imt_trampoline_from_page (buf);
5325 code = get_numerous_trampoline (MONO_AOT_TRAMP_IMT_THUNK, 1, &amodule, &got_offset, NULL);
5327 amodule->got [got_offset] = buf;
5334 mono_aot_get_gsharedvt_arg_trampoline (gpointer arg, gpointer addr)
5336 MonoAotModule *amodule;
5340 if (USE_PAGE_TRAMPOLINES) {
5341 code = get_new_gsharedvt_arg_trampoline_from_page (addr, arg);
5343 code = get_numerous_trampoline (MONO_AOT_TRAMP_GSHAREDVT_ARG, 2, &amodule, &got_offset, NULL);
5345 amodule->got [got_offset] = arg;
5346 amodule->got [got_offset + 1] = addr;
5349 /* The caller expects an ftnptr */
5350 return mono_create_ftnptr (mono_domain_get (), code);
5354 * mono_aot_set_make_unreadable:
5356 * Set whenever to make all mmaped memory unreadable. In conjuction with a
5357 * SIGSEGV handler, this is useful to find out which pages the runtime tries to read.
5360 mono_aot_set_make_unreadable (gboolean unreadable)
5364 make_unreadable = unreadable;
5366 if (make_unreadable && !inited) {
5367 mono_counters_register ("AOT: pagefaults", MONO_COUNTER_JIT | MONO_COUNTER_INT, &n_pagefaults);
5372 MonoAotModule *module;
5377 find_map (gpointer key, gpointer value, gpointer user_data)
5379 MonoAotModule *module = (MonoAotModule*)value;
5380 FindMapUserData *data = (FindMapUserData*)user_data;
5383 if ((data->ptr >= module->mem_begin) && (data->ptr < module->mem_end))
5384 data->module = module;
5387 static MonoAotModule*
5388 find_module_for_addr (void *ptr)
5390 FindMapUserData data;
5392 if (!make_unreadable)
5396 data.ptr = (guint8*)ptr;
5399 g_hash_table_foreach (aot_modules, (GHFunc)find_map, &data);
5406 * mono_aot_is_pagefault:
5408 * Should be called from a SIGSEGV signal handler to find out whenever @ptr is
5409 * within memory allocated by this module.
5412 mono_aot_is_pagefault (void *ptr)
5414 if (!make_unreadable)
5418 * Not signal safe, but SIGSEGV's are synchronous, and
5419 * this is only turned on by a MONO_DEBUG option.
5421 return find_module_for_addr (ptr) != NULL;
5425 * mono_aot_handle_pagefault:
5427 * Handle a pagefault caused by an unreadable page by making it readable again.
5430 mono_aot_handle_pagefault (void *ptr)
5432 #ifndef PLATFORM_WIN32
5433 guint8* start = (guint8*)ROUND_DOWN (((gssize)ptr), mono_pagesize ());
5437 res = mono_mprotect (start, mono_pagesize (), MONO_MMAP_READ|MONO_MMAP_WRITE|MONO_MMAP_EXEC);
5438 g_assert (res == 0);
5449 mono_aot_init (void)
5454 mono_aot_cleanup (void)
5459 mono_aot_find_method_index (MonoMethod *method)
5461 g_assert_not_reached ();
5466 mono_aot_init_llvm_method (gpointer aot_module, guint32 method_index)
5471 mono_aot_init_gshared_method_this (gpointer aot_module, guint32 method_index, MonoObject *this)
5476 mono_aot_init_gshared_method_rgctx (gpointer aot_module, guint32 method_index, MonoMethodRuntimeGenericContext *rgctx)
5481 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
5487 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
5493 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
5499 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
5505 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
5511 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
5517 mono_aot_get_plt_entry (guint8 *code)
5523 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
5529 mono_aot_patch_plt_entry (guint8 *code, guint8 *plt_entry, gpointer *got, mgreg_t *regs, guint8 *addr)
5534 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
5540 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
5542 g_assert_not_reached ();
5548 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
5550 g_assert_not_reached ();
5555 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
5557 g_assert_not_reached ();
5562 mono_aot_get_trampoline_full (const char *name, MonoTrampInfo **out_tinfo)
5564 g_assert_not_reached ();
5569 mono_aot_get_trampoline (const char *name)
5571 g_assert_not_reached ();
5576 mono_aot_get_unbox_trampoline (MonoMethod *method)
5578 g_assert_not_reached ();
5583 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
5585 g_assert_not_reached ();
5590 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
5592 g_assert_not_reached ();
5597 mono_aot_get_gsharedvt_arg_trampoline (gpointer arg, gpointer addr)
5599 g_assert_not_reached ();
5604 mono_aot_set_make_unreadable (gboolean unreadable)
5609 mono_aot_is_pagefault (void *ptr)
5615 mono_aot_handle_pagefault (void *ptr)
5620 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
5622 g_assert_not_reached ();
5627 mono_aot_register_jit_icall (const char *name, gpointer addr)