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-internal.h>
51 #include <mono/metadata/threads-types.h>
52 #include <mono/metadata/mono-endian.h>
53 #include <mono/utils/mono-logger-internal.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"
67 #define ENABLE_AOT_CACHE
70 /* Number of got entries shared between the JIT and LLVM GOT */
71 #define N_COMMON_GOT_ENTRIES 10
73 #define ALIGN_TO(val,align) ((((guint64)val) + ((align) - 1)) & ~((align) - 1))
74 #define ALIGN_PTR_TO(ptr,align) (gpointer)((((gssize)(ptr)) + (align - 1)) & (~(align - 1)))
75 #define ROUND_DOWN(VALUE,SIZE) ((VALUE) & ~((SIZE) - 1))
82 typedef struct MonoAotModule {
84 /* Pointer to the Global Offset Table */
88 GHashTable *name_cache;
89 GHashTable *extra_methods;
90 /* Maps methods to their code */
91 GHashTable *method_to_code;
92 /* Maps pointers into the method info to the methods themselves */
93 GHashTable *method_ref_to_method;
94 MonoAssemblyName *image_names;
96 MonoAssembly *assembly;
97 MonoImage **image_table;
98 guint32 image_table_len;
101 gboolean got_initializing;
104 guint8 *jit_code_start;
105 guint8 *jit_code_end;
106 guint8 *llvm_code_start;
107 guint8 *llvm_code_end;
111 /* Maps method indexes to their code */
113 /* Sorted array of method addresses */
114 gpointer *sorted_methods;
115 /* Method indexes for each method in sorted_methods */
116 int *sorted_method_indexes;
117 /* The length of the two tables above */
118 int sorted_methods_len;
119 guint32 *method_info_offsets;
120 guint32 *ex_info_offsets;
121 guint32 *class_info_offsets;
122 guint32 *methods_loaded;
123 guint16 *class_name_table;
124 guint32 *extra_method_table;
125 guint32 *extra_method_info_offsets;
126 guint32 *unbox_trampolines;
127 guint32 *unbox_trampolines_end;
128 guint32 *unbox_trampoline_addresses;
131 /* Points to the mono EH data created by LLVM */
132 guint8 *mono_eh_frame;
134 /* Points to the trampolines */
135 guint8 *trampolines [MONO_AOT_TRAMP_NUM];
136 /* The first unused trampoline of each kind */
137 guint32 trampoline_index [MONO_AOT_TRAMP_NUM];
139 gboolean use_page_trampolines;
141 MonoAotFileInfo info;
146 JitInfoMap *async_jit_info_table;
152 unsigned char *trampolines;
153 unsigned char *trampolines_end;
156 static GHashTable *aot_modules;
157 #define mono_aot_lock() mono_mutex_lock (&aot_mutex)
158 #define mono_aot_unlock() mono_mutex_unlock (&aot_mutex)
159 static mono_mutex_t aot_mutex;
162 * Maps assembly names to the mono_aot_module_<NAME>_info symbols in the
163 * AOT modules registered by mono_aot_register_module ().
165 static GHashTable *static_aot_modules;
168 * Maps MonoJitInfo* to the aot module they belong to, this can be different
169 * from ji->method->klass->image's aot module for generic instances.
171 static GHashTable *ji_to_amodule;
174 * Whenever to AOT compile loaded assemblies on demand and store them in
177 static gboolean enable_aot_cache = FALSE;
179 static gboolean mscorlib_aot_loaded;
182 static gint32 mono_last_aot_method = -1;
184 static gboolean make_unreadable = FALSE;
185 static guint32 name_table_accesses = 0;
186 static guint32 n_pagefaults = 0;
188 /* Used to speed-up find_aot_module () */
189 static gsize aot_code_low_addr = (gssize)-1;
190 static gsize aot_code_high_addr = 0;
193 static gint32 async_jit_info_size;
195 static GHashTable *aot_jit_icall_hash;
198 #define USE_PAGE_TRAMPOLINES ((MonoAotModule*)mono_defaults.corlib->aot_module)->use_page_trampolines
200 #define USE_PAGE_TRAMPOLINES 0
203 #define mono_aot_page_lock() mono_mutex_lock (&aot_page_mutex)
204 #define mono_aot_page_unlock() mono_mutex_unlock (&aot_page_mutex)
205 static mono_mutex_t aot_page_mutex;
207 static MonoAotModule *mscorlib_aot_module;
210 init_plt (MonoAotModule *info);
213 compute_llvm_code_range (MonoAotModule *amodule, guint8 **code_start, guint8 **code_end);
216 init_llvm_method (MonoAotModule *amodule, guint32 method_index, MonoMethod *method, MonoClass *init_class, MonoGenericContext *context);
219 decode_patches (MonoAotModule *amodule, MonoMemPool *mp, int n_patches, gboolean llvm, guint32 *got_offsets);
222 amodule_lock (MonoAotModule *amodule)
224 mono_mutex_lock (&amodule->mutex);
228 amodule_unlock (MonoAotModule *amodule)
230 mono_mutex_unlock (&amodule->mutex);
236 * Load one of the images referenced by AMODULE. Returns NULL if the image is not
237 * found, and sets the loader error if SET_ERROR is TRUE.
240 load_image (MonoAotModule *amodule, int index, gboolean set_error)
242 MonoAssembly *assembly;
243 MonoImageOpenStatus status;
245 g_assert (index < amodule->image_table_len);
247 if (amodule->image_table [index])
248 return amodule->image_table [index];
249 if (amodule->out_of_date)
252 assembly = mono_assembly_load (&amodule->image_names [index], amodule->assembly->basedir, &status);
254 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);
255 amodule->out_of_date = TRUE;
258 char *full_name = mono_stringify_assembly_name (&amodule->image_names [index]);
259 mono_loader_set_error_assembly_load (full_name, FALSE);
265 if (strcmp (assembly->image->guid, amodule->image_guids [index])) {
266 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);
267 amodule->out_of_date = TRUE;
271 amodule->image_table [index] = assembly->image;
272 return assembly->image;
276 decode_value (guint8 *ptr, guint8 **rptr)
281 if ((b & 0x80) == 0){
284 } else if ((b & 0x40) == 0){
285 len = ((b & 0x3f) << 8 | ptr [1]);
287 } else if (b != 0xff) {
288 len = ((b & 0x1f) << 24) |
295 len = (ptr [1] << 24) | (ptr [2] << 16) | (ptr [3] << 8) | ptr [4];
301 //printf ("DECODE: %d.\n", len);
306 * mono_aot_get_offset:
308 * Decode an offset table emitted by emit_offset_table (), returning the INDEXth
312 mono_aot_get_offset (guint32 *table, int index)
314 int i, group, ngroups, index_entry_size;
315 int start_offset, offset, group_size;
316 guint8 *data_start, *p;
317 guint32 *index32 = NULL;
318 guint16 *index16 = NULL;
320 /* noffsets = table [0]; */
321 group_size = table [1];
323 index_entry_size = table [3];
324 group = index / group_size;
326 if (index_entry_size == 2) {
327 index16 = (guint16*)&table [4];
328 data_start = (guint8*)&index16 [ngroups];
329 p = data_start + index16 [group];
331 index32 = (guint32*)&table [4];
332 data_start = (guint8*)&index32 [ngroups];
333 p = data_start + index32 [group];
336 /* offset will contain the value of offsets [group * group_size] */
337 offset = start_offset = decode_value (p, &p);
338 for (i = group * group_size + 1; i <= index; ++i) {
339 offset += decode_value (p, &p);
342 //printf ("Offset lookup: %d -> %d, start=%d, p=%d\n", index, offset, start_offset, table [3 + group]);
348 decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf);
351 decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf);
354 decode_type (MonoAotModule *module, guint8 *buf, guint8 **endbuf);
356 static MonoGenericInst*
357 decode_generic_inst (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
360 MonoType **type_argv;
361 MonoGenericInst *inst;
364 type_argc = decode_value (p, &p);
365 type_argv = g_new0 (MonoType*, type_argc);
367 for (i = 0; i < type_argc; ++i) {
368 MonoClass *pclass = decode_klass_ref (module, p, &p);
373 type_argv [i] = &pclass->byval_arg;
376 inst = mono_metadata_get_generic_inst (type_argc, type_argv);
385 decode_generic_context (MonoAotModule *module, MonoGenericContext *ctx, guint8 *buf, guint8 **endbuf)
392 argc = decode_value (p, &p);
395 ctx->class_inst = decode_generic_inst (module, p, &p);
396 if (!ctx->class_inst)
400 argc = decode_value (p, &p);
403 ctx->method_inst = decode_generic_inst (module, p, &p);
404 if (!ctx->method_inst)
413 decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
417 MonoClass *klass = NULL, *eklass;
418 guint32 token, rank, idx;
422 reftype = decode_value (p, &p);
429 case MONO_AOT_TYPEREF_TYPEDEF_INDEX:
430 idx = decode_value (p, &p);
431 image = load_image (module, 0, TRUE);
434 klass = mono_class_get_checked (image, MONO_TOKEN_TYPE_DEF + idx, &error);
435 g_assert (mono_error_ok (&error));
437 case MONO_AOT_TYPEREF_TYPEDEF_INDEX_IMAGE:
438 idx = decode_value (p, &p);
439 image = load_image (module, decode_value (p, &p), TRUE);
442 klass = mono_class_get_checked (image, MONO_TOKEN_TYPE_DEF + idx, &error);
443 g_assert (mono_error_ok (&error));
445 case MONO_AOT_TYPEREF_TYPESPEC_TOKEN:
446 token = decode_value (p, &p);
447 image = module->assembly->image;
450 klass = mono_class_get_checked (image, token, &error);
451 g_assert (mono_error_ok (&error));
453 case MONO_AOT_TYPEREF_GINST: {
455 MonoGenericContext ctx;
458 gclass = decode_klass_ref (module, p, &p);
461 g_assert (gclass->generic_container);
463 memset (&ctx, 0, sizeof (ctx));
464 ctx.class_inst = decode_generic_inst (module, p, &p);
467 type = mono_class_inflate_generic_type (&gclass->byval_arg, &ctx);
468 klass = mono_class_from_mono_type (type);
469 mono_metadata_free_type (type);
472 case MONO_AOT_TYPEREF_VAR: {
474 MonoGenericContainer *container = NULL;
475 int type = decode_value (p, &p);
476 int num = decode_value (p, &p);
477 gboolean has_container = decode_value (p, &p);
478 MonoType *gshared_constraint = NULL;
479 char *par_name = NULL;
483 gboolean is_method = decode_value (p, &p);
486 MonoMethod *method_def;
487 g_assert (type == MONO_TYPE_MVAR);
488 method_def = decode_resolve_method_ref (module, p, &p);
492 container = mono_method_get_generic_container (method_def);
494 MonoClass *class_def;
495 g_assert (type == MONO_TYPE_VAR);
496 class_def = decode_klass_ref (module, p, &p);
500 container = class_def->generic_container;
503 gboolean has_gshared_constraint = decode_value (p, &p);
504 if (has_gshared_constraint) {
505 MonoClass *par_klass;
507 gshared_constraint = decode_type (module, p, &p);
508 if (!gshared_constraint)
511 par_klass = decode_klass_ref (module, p, &p);
515 t = mini_get_shared_gparam (&par_klass->byval_arg, gshared_constraint);
520 klass = mono_class_from_mono_type (t);
522 t = g_new0 (MonoType, 1);
525 t->data.generic_param = mono_generic_container_get_param (container, num);
526 g_assert (gshared_constraint == NULL);
529 MonoGenericParam *par = (MonoGenericParam*)mono_image_alloc0 (module->assembly->image, sizeof (MonoGenericParamFull));
531 par->gshared_constraint = gshared_constraint;
532 par->image = module->assembly->image;
533 t->data.generic_param = par;
535 ((MonoGenericParamFull*)par)->info.name = par_name;
537 // FIXME: Maybe use types directly to avoid
538 // the overhead of creating MonoClass-es
539 klass = mono_class_from_mono_type (t);
545 case MONO_AOT_TYPEREF_ARRAY:
547 rank = decode_value (p, &p);
548 eklass = decode_klass_ref (module, p, &p);
549 klass = mono_array_class_get (eklass, rank);
551 case MONO_AOT_TYPEREF_PTR: {
554 t = decode_type (module, p, &p);
557 klass = mono_class_from_mono_type (t);
561 case MONO_AOT_TYPEREF_BLOB_INDEX: {
562 guint32 offset = decode_value (p, &p);
565 p2 = module->blob + offset;
566 klass = decode_klass_ref (module, p2, &p2);
570 g_assert_not_reached ();
573 //printf ("BLA: %s\n", mono_type_full_name (&klass->byval_arg));
578 static MonoClassField*
579 decode_field_info (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
581 MonoClass *klass = decode_klass_ref (module, buf, &buf);
588 token = MONO_TOKEN_FIELD_DEF + decode_value (p, &p);
592 return mono_class_get_field (klass, token);
596 * Parse a MonoType encoded by encode_type () in aot-compiler.c. Return malloc-ed
600 decode_type (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
605 t = g_malloc0 (sizeof (MonoType));
608 if (*p == MONO_TYPE_PINNED) {
611 } else if (*p == MONO_TYPE_BYREF) {
624 case MONO_TYPE_BOOLEAN:
638 case MONO_TYPE_STRING:
639 case MONO_TYPE_OBJECT:
640 case MONO_TYPE_TYPEDBYREF:
642 case MONO_TYPE_VALUETYPE:
643 case MONO_TYPE_CLASS:
644 t->data.klass = decode_klass_ref (module, p, &p);
646 case MONO_TYPE_SZARRAY:
647 t->data.klass = decode_klass_ref (module, p, &p);
653 t->data.type = decode_type (module, p, &p);
655 case MONO_TYPE_GENERICINST: {
657 MonoGenericContext ctx;
661 gclass = decode_klass_ref (module, p, &p);
664 g_assert (gclass->generic_container);
666 memset (&ctx, 0, sizeof (ctx));
667 ctx.class_inst = decode_generic_inst (module, p, &p);
670 type = mono_class_inflate_generic_type (&gclass->byval_arg, &ctx);
671 klass = mono_class_from_mono_type (type);
672 t->data.generic_class = klass->generic_class;
675 case MONO_TYPE_ARRAY: {
676 MonoArrayType *array;
679 // FIXME: memory management
680 array = g_new0 (MonoArrayType, 1);
681 array->eklass = decode_klass_ref (module, p, &p);
684 array->rank = decode_value (p, &p);
685 array->numsizes = decode_value (p, &p);
688 array->sizes = g_malloc0 (sizeof (int) * array->numsizes);
689 for (i = 0; i < array->numsizes; ++i)
690 array->sizes [i] = decode_value (p, &p);
692 array->numlobounds = decode_value (p, &p);
693 if (array->numlobounds)
694 array->lobounds = g_malloc0 (sizeof (int) * array->numlobounds);
695 for (i = 0; i < array->numlobounds; ++i)
696 array->lobounds [i] = decode_value (p, &p);
697 t->data.array = array;
701 case MONO_TYPE_MVAR: {
702 MonoClass *klass = decode_klass_ref (module, p, &p);
705 t->data.generic_param = klass->byval_arg.data.generic_param;
709 g_assert_not_reached ();
717 // FIXME: Error handling, memory management
719 static MonoMethodSignature*
720 decode_signature_with_target (MonoAotModule *module, MonoMethodSignature *target, guint8 *buf, guint8 **endbuf)
722 MonoMethodSignature *sig;
724 int i, param_count, call_conv;
726 gboolean hasthis, explicit_this, has_gen_params;
730 has_gen_params = (flags & 0x10) != 0;
731 hasthis = (flags & 0x20) != 0;
732 explicit_this = (flags & 0x40) != 0;
733 call_conv = flags & 0x0F;
736 /* gen_param_count = */ decode_value (p, &p);
737 param_count = decode_value (p, &p);
738 if (target && param_count != target->param_count)
740 sig = g_malloc0 (MONO_SIZEOF_METHOD_SIGNATURE + param_count * sizeof (MonoType *));
741 sig->param_count = param_count;
742 sig->sentinelpos = -1;
743 sig->hasthis = hasthis;
744 sig->explicit_this = explicit_this;
745 sig->call_convention = call_conv;
746 sig->param_count = param_count;
747 sig->ret = decode_type (module, p, &p);
748 for (i = 0; i < param_count; ++i) {
749 if (*p == MONO_TYPE_SENTINEL) {
750 g_assert (sig->call_convention == MONO_CALL_VARARG);
751 sig->sentinelpos = i;
754 sig->params [i] = decode_type (module, p, &p);
757 if (sig->call_convention == MONO_CALL_VARARG && sig->sentinelpos == -1)
758 sig->sentinelpos = sig->param_count;
765 static MonoMethodSignature*
766 decode_signature (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
768 return decode_signature_with_target (module, NULL, buf, endbuf);
772 sig_matches_target (MonoAotModule *module, MonoMethod *target, guint8 *buf, guint8 **endbuf)
774 MonoMethodSignature *sig;
778 sig = decode_signature_with_target (module, mono_method_signature (target), p, &p);
779 res = sig && mono_metadata_signature_equal (mono_method_signature (target), sig);
785 /* Stores information returned by decode_method_ref () */
790 gboolean no_aot_trampoline;
794 * decode_method_ref_with_target:
796 * Decode a method reference, storing the image/token into a MethodRef structure.
797 * This avoids loading metadata for the method if the caller does not need it. If the method has
798 * no token, then it is loaded from metadata and ref->method is set to the method instance.
799 * If TARGET is non-NULL, abort decoding if it can be determined that the decoded method
800 * couldn't resolve to TARGET, and return FALSE.
801 * There are some kinds of method references which only support a non-null TARGET.
802 * This means that its not possible to decode this into a method, only to check
803 * that the method reference matches a given method. This is normally not a problem
804 * as these wrappers only occur in the extra_methods table, where we already have
805 * a method we want to lookup.
808 decode_method_ref_with_target (MonoAotModule *module, MethodRef *ref, MonoMethod *target, guint8 *buf, guint8 **endbuf)
810 guint32 image_index, value;
811 MonoImage *image = NULL;
814 memset (ref, 0, sizeof (MethodRef));
816 value = decode_value (p, &p);
817 image_index = value >> 24;
819 if (image_index == MONO_AOT_METHODREF_NO_AOT_TRAMPOLINE) {
820 ref->no_aot_trampoline = TRUE;
821 value = decode_value (p, &p);
822 image_index = value >> 24;
825 if (image_index < MONO_AOT_METHODREF_MIN || image_index == MONO_AOT_METHODREF_METHODSPEC || image_index == MONO_AOT_METHODREF_GINST) {
826 if (target && target->wrapper_type)
830 if (image_index == MONO_AOT_METHODREF_WRAPPER) {
832 guint32 wrapper_type;
834 wrapper_type = decode_value (p, &p);
836 if (target && target->wrapper_type != wrapper_type)
840 image = mono_defaults.corlib;
842 switch (wrapper_type) {
843 #ifndef DISABLE_REMOTING
844 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK: {
845 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
849 mono_class_init (m->klass);
853 ref->method = mono_marshal_get_remoting_invoke_with_check (m);
856 case MONO_WRAPPER_PROXY_ISINST: {
857 MonoClass *klass = decode_klass_ref (module, p, &p);
860 ref->method = mono_marshal_get_proxy_cancast (klass);
863 case MONO_WRAPPER_LDFLD:
864 case MONO_WRAPPER_LDFLDA:
865 case MONO_WRAPPER_STFLD:
866 case MONO_WRAPPER_ISINST: {
867 MonoClass *klass = decode_klass_ref (module, p, &p);
870 if (wrapper_type == MONO_WRAPPER_LDFLD)
871 ref->method = mono_marshal_get_ldfld_wrapper (&klass->byval_arg);
872 else if (wrapper_type == MONO_WRAPPER_LDFLDA)
873 ref->method = mono_marshal_get_ldflda_wrapper (&klass->byval_arg);
874 else if (wrapper_type == MONO_WRAPPER_STFLD)
875 ref->method = mono_marshal_get_stfld_wrapper (&klass->byval_arg);
876 else if (wrapper_type == MONO_WRAPPER_ISINST)
877 ref->method = mono_marshal_get_isinst (klass);
879 g_assert_not_reached ();
882 case MONO_WRAPPER_LDFLD_REMOTE:
883 ref->method = mono_marshal_get_ldfld_remote_wrapper (NULL);
885 case MONO_WRAPPER_STFLD_REMOTE:
886 ref->method = mono_marshal_get_stfld_remote_wrapper (NULL);
889 case MONO_WRAPPER_ALLOC: {
890 int atype = decode_value (p, &p);
892 ref->method = mono_gc_get_managed_allocator_by_type (atype, !!(mono_profiler_get_events () & MONO_PROFILE_ALLOCATIONS));
894 g_error ("Error: No managed allocator, but we need one for AOT.\nAre you using non-standard GC options?\n");
897 case MONO_WRAPPER_WRITE_BARRIER: {
898 int nursery_bits = decode_value (p, &p);
900 ref->method = mono_gc_get_write_barrier ();
903 info = mono_marshal_get_wrapper_info (ref->method);
905 g_assert (info->d.wbarrier.nursery_bits == nursery_bits);
909 case MONO_WRAPPER_STELEMREF: {
910 int subtype = decode_value (p, &p);
912 if (subtype == WRAPPER_SUBTYPE_NONE) {
913 ref->method = mono_marshal_get_stelemref ();
914 } else if (subtype == WRAPPER_SUBTYPE_VIRTUAL_STELEMREF) {
917 kind = decode_value (p, &p);
919 /* Can't decode this */
922 if (target->wrapper_type == MONO_WRAPPER_STELEMREF) {
923 info = mono_marshal_get_wrapper_info (target);
926 if (info->subtype == subtype && info->d.virtual_stelemref.kind == kind)
927 ref->method = target;
934 g_assert_not_reached ();
938 case MONO_WRAPPER_SYNCHRONIZED: {
939 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
943 ref->method = mono_marshal_get_synchronized_wrapper (m);
946 case MONO_WRAPPER_UNKNOWN: {
947 int subtype = decode_value (p, &p);
949 if (subtype == WRAPPER_SUBTYPE_PTR_TO_STRUCTURE || subtype == WRAPPER_SUBTYPE_STRUCTURE_TO_PTR) {
950 MonoClass *klass = decode_klass_ref (module, p, &p);
957 if (klass != target->klass)
960 if (subtype == WRAPPER_SUBTYPE_PTR_TO_STRUCTURE) {
961 if (strcmp (target->name, "PtrToStructure"))
963 ref->method = mono_marshal_get_ptr_to_struct (klass);
965 if (strcmp (target->name, "StructureToPtr"))
967 ref->method = mono_marshal_get_struct_to_ptr (klass);
969 } else if (subtype == WRAPPER_SUBTYPE_SYNCHRONIZED_INNER) {
970 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
974 ref->method = mono_marshal_get_synchronized_inner_wrapper (m);
975 } else if (subtype == WRAPPER_SUBTYPE_ARRAY_ACCESSOR) {
976 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
980 ref->method = mono_marshal_get_array_accessor_wrapper (m);
981 } else if (subtype == WRAPPER_SUBTYPE_GSHAREDVT_IN) {
982 ref->method = mono_marshal_get_gsharedvt_in_wrapper ();
983 } else if (subtype == WRAPPER_SUBTYPE_GSHAREDVT_OUT) {
984 ref->method = mono_marshal_get_gsharedvt_out_wrapper ();
986 g_assert_not_reached ();
990 case MONO_WRAPPER_MANAGED_TO_MANAGED: {
991 int subtype = decode_value (p, &p);
993 if (subtype == WRAPPER_SUBTYPE_ELEMENT_ADDR) {
994 int rank = decode_value (p, &p);
995 int elem_size = decode_value (p, &p);
997 ref->method = mono_marshal_get_array_address (rank, elem_size);
998 } else if (subtype == WRAPPER_SUBTYPE_STRING_CTOR) {
1001 m = decode_resolve_method_ref (module, p, &p);
1007 g_assert (target->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED);
1009 info = mono_marshal_get_wrapper_info (target);
1010 if (info && info->subtype == subtype && info->d.string_ctor.method == m)
1011 ref->method = target;
1017 case MONO_WRAPPER_MANAGED_TO_NATIVE: {
1019 int subtype = decode_value (p, &p);
1022 if (subtype == WRAPPER_SUBTYPE_ICALL_WRAPPER) {
1027 if (strcmp (target->name, name) != 0)
1029 ref->method = target;
1031 m = decode_resolve_method_ref (module, p, &p);
1036 /* This should only happen when looking for an extra method */
1039 if (mono_marshal_method_from_wrapper (target) == m)
1040 ref->method = target;
1046 case MONO_WRAPPER_CASTCLASS: {
1047 int subtype = decode_value (p, &p);
1049 if (subtype == WRAPPER_SUBTYPE_CASTCLASS_WITH_CACHE)
1050 ref->method = mono_marshal_get_castclass_with_cache ();
1051 else if (subtype == WRAPPER_SUBTYPE_ISINST_WITH_CACHE)
1052 ref->method = mono_marshal_get_isinst_with_cache ();
1054 g_assert_not_reached ();
1057 case MONO_WRAPPER_RUNTIME_INVOKE: {
1058 int subtype = decode_value (p, &p);
1059 int pass_rgctx = decode_value (p, &p);
1064 if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_DYNAMIC) {
1065 if (strcmp (target->name, "runtime_invoke_dynamic") != 0)
1067 ref->method = target;
1068 } else if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_DIRECT) {
1069 /* Direct wrapper */
1070 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
1074 ref->method = mono_marshal_get_runtime_invoke (m, FALSE, pass_rgctx);
1075 } else if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_VIRTUAL) {
1076 /* Virtual direct wrapper */
1077 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
1081 ref->method = mono_marshal_get_runtime_invoke (m, TRUE, pass_rgctx);
1083 MonoMethodSignature *sig;
1085 sig = decode_signature_with_target (module, NULL, p, &p);
1086 info = mono_marshal_get_wrapper_info (target);
1089 if (info->subtype != subtype)
1091 if (info->d.runtime_invoke.pass_rgctx != pass_rgctx)
1093 g_assert (info->d.runtime_invoke.sig);
1094 if (mono_metadata_signature_equal (sig, info->d.runtime_invoke.sig))
1095 ref->method = target;
1101 case MONO_WRAPPER_DELEGATE_INVOKE:
1102 case MONO_WRAPPER_DELEGATE_BEGIN_INVOKE:
1103 case MONO_WRAPPER_DELEGATE_END_INVOKE: {
1104 gboolean is_inflated = decode_value (p, &p);
1105 WrapperSubtype subtype;
1109 MonoMethod *invoke, *wrapper;
1111 klass = decode_klass_ref (module, p, &p);
1115 switch (wrapper_type) {
1116 case MONO_WRAPPER_DELEGATE_INVOKE:
1117 invoke = mono_get_delegate_invoke (klass);
1118 wrapper = mono_marshal_get_delegate_invoke (invoke, NULL);
1120 case MONO_WRAPPER_DELEGATE_BEGIN_INVOKE:
1121 invoke = mono_get_delegate_begin_invoke (klass);
1122 wrapper = mono_marshal_get_delegate_begin_invoke (invoke);
1124 case MONO_WRAPPER_DELEGATE_END_INVOKE:
1125 invoke = mono_get_delegate_end_invoke (klass);
1126 wrapper = mono_marshal_get_delegate_end_invoke (invoke);
1129 g_assert_not_reached ();
1132 if (target && wrapper != target)
1134 ref->method = wrapper;
1137 * These wrappers are associated with a signature, not with a method.
1138 * Since we can't decode them into methods, they need a target method.
1143 if (wrapper_type == MONO_WRAPPER_DELEGATE_INVOKE) {
1144 subtype = decode_value (p, &p);
1145 info = mono_marshal_get_wrapper_info (target);
1147 if (info->subtype != subtype)
1150 if (subtype != WRAPPER_SUBTYPE_NONE)
1154 if (sig_matches_target (module, target, p, &p))
1155 ref->method = target;
1161 case MONO_WRAPPER_NATIVE_TO_MANAGED: {
1165 m = decode_resolve_method_ref (module, p, &p);
1168 klass = decode_klass_ref (module, p, &p);
1171 ref->method = mono_marshal_get_managed_wrapper (m, klass, 0);
1175 g_assert_not_reached ();
1177 } else if (image_index == MONO_AOT_METHODREF_METHODSPEC) {
1178 image_index = decode_value (p, &p);
1179 ref->token = decode_value (p, &p);
1181 image = load_image (module, image_index, TRUE);
1184 } else if (image_index == MONO_AOT_METHODREF_GINST) {
1187 MonoGenericContext ctx;
1190 * These methods do not have a token which resolves them, so we
1191 * resolve them immediately.
1193 klass = decode_klass_ref (module, p, &p);
1197 if (target && target->klass != klass)
1200 image_index = decode_value (p, &p);
1201 ref->token = decode_value (p, &p);
1203 image = load_image (module, image_index, TRUE);
1207 ref->method = mono_get_method_full (image, ref->token, NULL, NULL);
1211 memset (&ctx, 0, sizeof (ctx));
1213 if (FALSE && klass->generic_class) {
1214 ctx.class_inst = klass->generic_class->context.class_inst;
1215 ctx.method_inst = NULL;
1217 ref->method = mono_class_inflate_generic_method_full_checked (ref->method, klass, &ctx, &error);
1218 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
1221 memset (&ctx, 0, sizeof (ctx));
1223 if (!decode_generic_context (module, &ctx, p, &p))
1226 ref->method = mono_class_inflate_generic_method_full_checked (ref->method, klass, &ctx, &error);
1227 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
1228 } else if (image_index == MONO_AOT_METHODREF_ARRAY) {
1232 klass = decode_klass_ref (module, p, &p);
1235 method_type = decode_value (p, &p);
1236 switch (method_type) {
1238 ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank);
1241 ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank * 2);
1244 ref->method = mono_class_get_method_from_name (klass, "Get", -1);
1247 ref->method = mono_class_get_method_from_name (klass, "Address", -1);
1250 ref->method = mono_class_get_method_from_name (klass, "Set", -1);
1253 g_assert_not_reached ();
1256 if (image_index == MONO_AOT_METHODREF_LARGE_IMAGE_INDEX) {
1257 image_index = decode_value (p, &p);
1258 value = decode_value (p, &p);
1261 ref->token = MONO_TOKEN_METHOD_DEF | (value & 0xffffff);
1263 image = load_image (module, image_index, TRUE);
1276 decode_method_ref (MonoAotModule *module, MethodRef *ref, guint8 *buf, guint8 **endbuf)
1278 return decode_method_ref_with_target (module, ref, NULL, buf, endbuf);
1282 * decode_resolve_method_ref_with_target:
1284 * Similar to decode_method_ref, but resolve and return the method itself.
1287 decode_resolve_method_ref_with_target (MonoAotModule *module, MonoMethod *target, guint8 *buf, guint8 **endbuf)
1292 res = decode_method_ref_with_target (module, &ref, target, buf, endbuf);
1299 return mono_get_method (ref.image, ref.token, NULL);
1303 decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
1305 return decode_resolve_method_ref_with_target (module, NULL, buf, endbuf);
1308 #ifdef ENABLE_AOT_CACHE
1314 * - Add options for controlling the cache size
1315 * - Handle full cache by deleting old assemblies lru style
1316 * - Maybe add a threshold after an assembly is AOT compiled
1317 * - Add options for enabling this for specific main assemblies
1320 /* The cache directory */
1321 static char *cache_dir;
1323 /* The number of assemblies AOTed in this run */
1324 static int cache_count;
1326 /* Whenever to AOT in-process */
1327 static gboolean in_process;
1330 collect_assemblies (gpointer data, gpointer user_data)
1332 MonoAssembly *ass = data;
1333 GSList **l = user_data;
1335 *l = g_slist_prepend (*l, ass);
1338 #define SHA1_DIGEST_LENGTH 20
1341 * get_aot_config_hash:
1343 * Return a hash for all the version information an AOT module depends on.
1345 static G_GNUC_UNUSED char*
1346 get_aot_config_hash (MonoAssembly *assembly)
1349 GSList *l, *assembly_list = NULL;
1352 guint8 digest [SHA1_DIGEST_LENGTH];
1355 build_info = mono_get_runtime_build_info ();
1357 s = g_string_new (build_info);
1359 mono_assembly_foreach (collect_assemblies, &assembly_list);
1362 * The assembly list includes the current assembly as well, no need
1365 for (l = assembly_list; l; l = l->next) {
1366 MonoAssembly *ass = l->data;
1368 g_string_append (s, "_");
1369 g_string_append (s, ass->aname.name);
1370 g_string_append (s, "_");
1371 g_string_append (s, ass->image->guid);
1374 for (i = 0; i < s->len; ++i) {
1375 if (!isalnum (s->str [i]) && s->str [i] != '-')
1379 mono_sha1_get_digest ((guint8*)s->str, s->len, digest);
1381 digest_str = g_malloc0 ((SHA1_DIGEST_LENGTH * 2) + 1);
1382 for (i = 0; i < SHA1_DIGEST_LENGTH; ++i)
1383 sprintf (digest_str + (i * 2), "%02x", digest [i]);
1385 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: file dependencies: %s, hash %s", s->str, digest_str);
1387 g_string_free (s, TRUE);
1393 aot_cache_init (void)
1397 enable_aot_cache = TRUE;
1402 * aot_cache_load_module:
1404 * Load the AOT image corresponding to ASSEMBLY from the aot cache, AOTing it if neccessary.
1407 aot_cache_load_module (MonoAssembly *assembly, char **aot_name)
1409 MonoAotCacheConfig *config;
1411 char *fname, *tmp2, *aot_options, *failure_fname;
1423 if (image_is_dynamic (assembly->image))
1426 /* Check in the list of assemblies enabled for aot caching */
1427 config = mono_get_aot_cache_config ();
1431 MonoDomain *domain = mono_domain_get ();
1432 MonoAssembly *entry_assembly = domain->entry_assembly;
1434 // FIXME: This cannot be used for mscorlib during startup, since entry_assembly is not set yet
1435 for (l = config->apps; l; l = l->next) {
1438 if ((entry_assembly && !strcmp (entry_assembly->aname.name, n)) || (!entry_assembly && !strcmp (assembly->aname.name, n)))
1446 for (l = config->assemblies; l; l = l->next) {
1449 if (!strcmp (assembly->aname.name, n))
1459 home = g_get_home_dir ();
1462 cache_dir = g_strdup_printf ("%s/Library/Caches/mono/aot-cache", home);
1463 if (!g_file_test (cache_dir, G_FILE_TEST_EXISTS|G_FILE_TEST_IS_DIR))
1464 g_mkdir_with_parents (cache_dir, 0777);
1468 * The same assembly can be used in multiple configurations, i.e. multiple
1469 * versions of the runtime, with multiple versions of dependent assemblies etc.
1470 * To handle this, we compute a version string containing all this information, hash it,
1471 * and use the hash as a filename suffix.
1473 hash = get_aot_config_hash (assembly);
1475 tmp2 = g_strdup_printf ("%s-%s%s", assembly->image->assembly_name, hash, MONO_SOLIB_EXT);
1476 fname = g_build_filename (cache_dir, tmp2, NULL);
1480 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: loading from cache: '%s'.", fname);
1481 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
1484 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: found in cache: '%s'.", fname);
1488 if (!strcmp (assembly->aname.name, "mscorlib") && !mscorlib_aot_loaded)
1490 * Can't AOT this during startup, so we AOT it when called later from
1491 * mono_aot_get_method ().
1495 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: not found.");
1497 /* Only AOT one assembly per run to avoid slowing down execution too much */
1498 if (cache_count > 0)
1502 /* Check for previous failure */
1503 failure_fname = g_strdup_printf ("%s.failure", fname);
1504 failure_file = fopen (failure_fname, "r");
1506 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: assembly '%s' previously failed to compile '%s' ('%s')... ", assembly->image->name, fname, failure_fname);
1507 g_free (failure_fname);
1510 g_free (failure_fname);
1511 fclose (failure_file);
1514 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: compiling assembly '%s', logfile: '%s.log'... ", assembly->image->name, fname);
1517 * We need to invoke the AOT compiler here. There are multiple approaches:
1518 * - spawn a new runtime process. This can be hard when running with mkbundle, and
1519 * its hard to make the new process load the same set of assemblies.
1520 * - doing it in-process. This exposes the current process to bugs/leaks/side effects of
1522 * - fork a new process and do the work there.
1525 aot_options = g_strdup_printf ("outfile=%s,internal-logfile=%s.log%s%s", fname, fname, config->aot_options ? "," : "", config->aot_options ? config->aot_options : "");
1526 /* Maybe due this in another thread ? */
1527 res = mono_compile_assembly (assembly, mono_parse_default_optimizations (NULL), aot_options);
1529 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: compilation failed.");
1530 failure_fname = g_strdup_printf ("%s.failure", fname);
1531 failure_file = fopen (failure_fname, "a+");
1532 fclose (failure_file);
1533 g_free (failure_fname);
1535 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: compilation succeeded.");
1539 * - Avoid waiting for the aot process to finish ?
1540 * (less overhead, but multiple processes could aot the same assembly at the same time)
1549 logfile_name = g_strdup_printf ("%s/aot.log", cache_dir);
1550 logfile = fopen (logfile_name, "a+");
1551 g_free (logfile_name);
1553 dup2 (fileno (logfile), 1);
1554 dup2 (fileno (logfile), 2);
1556 aot_options = g_strdup_printf ("outfile=%s", fname);
1557 res = mono_compile_assembly (assembly, mono_parse_default_optimizations (NULL), aot_options);
1565 waitpid (pid, &exit_status, 0);
1566 if (!WIFEXITED (exit_status) && (WEXITSTATUS (exit_status) == 0))
1567 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: failed.");
1569 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: succeeded.");
1573 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
1581 aot_cache_init (void)
1586 aot_cache_load_module (MonoAssembly *assembly, char **aot_name)
1594 find_symbol (MonoDl *module, gpointer *globals, const char *name, gpointer *value)
1598 guint16 *table, *entry;
1601 char *symbol = (char*)name;
1604 symbol = g_strdup_printf ("_%s", name);
1607 /* The first entry points to the hash */
1608 table = globals [0];
1611 table_size = table [0];
1614 hash = mono_metadata_str_hash (symbol) % table_size;
1616 entry = &table [hash * 2];
1618 /* Search the hash for the index into the globals table */
1620 while (entry [0] != 0) {
1621 guint32 index = entry [0] - 1;
1622 guint32 next = entry [1];
1624 //printf ("X: %s %s\n", (char*)globals [index * 2], name);
1626 if (!strcmp (globals [index * 2], symbol)) {
1627 global_index = index;
1632 entry = &table [next * 2];
1638 if (global_index != -1)
1639 *value = globals [global_index * 2 + 1];
1646 char *err = mono_dl_symbol (module, name, value);
1654 check_usable (MonoAssembly *assembly, MonoAotFileInfo *info, char **out_msg)
1658 gboolean usable = TRUE;
1659 gboolean full_aot, safepoints;
1661 guint32 excluded_cpu_optimizations;
1663 if (strcmp (assembly->image->guid, info->assembly_guid)) {
1664 msg = g_strdup_printf ("doesn't match assembly");
1668 build_info = mono_get_runtime_build_info ();
1669 if (strlen (info->runtime_version) > 0 && strcmp (info->runtime_version, build_info)) {
1670 msg = g_strdup_printf ("compiled against runtime version '%s' while this runtime has version '%s'", info->runtime_version, build_info);
1673 g_free (build_info);
1675 full_aot = info->flags & MONO_AOT_FILE_FLAG_FULL_AOT;
1677 if (mono_aot_only && !full_aot) {
1678 msg = g_strdup_printf ("not compiled with --aot=full");
1681 if (!mono_aot_only && full_aot) {
1682 msg = g_strdup_printf ("compiled with --aot=full");
1685 if (mono_llvm_only && !(info->flags & MONO_AOT_FILE_FLAG_LLVM_ONLY)) {
1686 msg = g_strdup_printf ("not compiled with --aot=llvmonly");
1690 /* mono_arch_find_imt_method () requires this */
1691 if ((info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM) && !mono_use_llvm) {
1692 msg = g_strdup_printf ("compiled against LLVM");
1695 if (!(info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM) && mono_use_llvm) {
1696 msg = g_strdup_printf ("not compiled against LLVM");
1700 if (mini_get_debug_options ()->mdb_optimizations && !(info->flags & MONO_AOT_FILE_FLAG_DEBUG) && !full_aot) {
1701 msg = g_strdup_printf ("not compiled for debugging");
1705 mono_arch_cpu_optimizations (&excluded_cpu_optimizations);
1706 if (info->opts & excluded_cpu_optimizations) {
1707 msg = g_strdup_printf ("compiled with unsupported CPU optimizations");
1711 if (!mono_aot_only && (info->simd_opts & ~mono_arch_cpu_enumerate_simd_versions ())) {
1712 msg = g_strdup_printf ("compiled with unsupported SIMD extensions");
1718 if (info->gc_name_index != -1) {
1719 char *gc_name = (char*)&blob [info->gc_name_index];
1720 const char *current_gc_name = mono_gc_get_gc_name ();
1722 if (strcmp (current_gc_name, gc_name) != 0) {
1723 msg = g_strdup_printf ("compiled against GC %s, while the current runtime uses GC %s.\n", gc_name, current_gc_name);
1728 safepoints = info->flags & MONO_AOT_FILE_FLAG_SAFEPOINTS;
1730 if (!safepoints && mono_threads_is_coop_enabled ()) {
1731 msg = g_strdup_printf ("not compiled with safepoints");
1740 * TABLE should point to a table of call instructions. Return the address called by the INDEXth entry.
1743 get_call_table_entry (void *table, int index)
1745 #if defined(TARGET_ARM)
1750 ins_addr = (guint32*)table + index;
1752 if ((ins >> ARMCOND_SHIFT) == ARMCOND_NV) {
1754 offset = (((int)(((ins & 0xffffff) << 1) | ((ins >> 24) & 0x1))) << 7) >> 7;
1755 return (char*)ins_addr + (offset * 2) + 8 + 1;
1757 offset = (((int)ins & 0xffffff) << 8) >> 8;
1758 return (char*)ins_addr + (offset * 4) + 8;
1760 #elif defined(TARGET_ARM64)
1761 return mono_arch_get_call_target ((guint8*)table + (index * 4) + 4);
1762 #elif defined(TARGET_X86) || defined(TARGET_AMD64)
1763 /* The callee expects an ip which points after the call */
1764 return mono_arch_get_call_target ((guint8*)table + (index * 5) + 5);
1766 g_assert_not_reached ();
1774 * Initialize the shared got entries for AMODULE.
1777 init_amodule_got (MonoAotModule *amodule)
1780 MonoMemPool *mp = mono_mempool_new ();
1781 MonoJumpInfo *patches;
1782 guint32 got_offsets [128];
1785 /* These can't be initialized in load_aot_module () */
1786 if (amodule->shared_got [0] || amodule->got_initializing)
1789 amodule->got_initializing = TRUE;
1791 npatches = amodule->info.nshared_got_entries;
1792 for (i = 0; i < npatches; ++i)
1793 got_offsets [i] = i;
1794 patches = decode_patches (amodule, mp, npatches, FALSE, got_offsets);
1796 for (i = 0; i < npatches; ++i) {
1799 if (ji->type == MONO_PATCH_INFO_GC_CARD_TABLE_ADDR && !mono_gc_is_moving ()) {
1800 amodule->shared_got [i] = NULL;
1801 } else if (ji->type == MONO_PATCH_INFO_GC_NURSERY_START && !mono_gc_is_moving ()) {
1802 amodule->shared_got [i] = NULL;
1803 } else if (ji->type == MONO_PATCH_INFO_GC_NURSERY_BITS && !mono_gc_is_moving ()) {
1804 amodule->shared_got [i] = NULL;
1805 } else if (ji->type == MONO_PATCH_INFO_IMAGE) {
1806 amodule->shared_got [i] = amodule->assembly->image;
1807 } else if (ji->type == MONO_PATCH_INFO_MSCORLIB_GOT_ADDR) {
1808 if (mono_defaults.corlib) {
1809 MonoAotModule *mscorlib_amodule = mono_defaults.corlib->aot_module;
1811 if (mscorlib_amodule)
1812 amodule->shared_got [i] = mscorlib_amodule->got;
1814 amodule->shared_got [i] = amodule->got;
1816 } else if (ji->type == MONO_PATCH_INFO_AOT_MODULE) {
1817 amodule->shared_got [i] = amodule;
1819 amodule->shared_got [i] = mono_resolve_patch_target (NULL, mono_get_root_domain (), NULL, ji, FALSE);
1824 for (i = 0; i < npatches; ++i)
1825 amodule->got [i] = amodule->shared_got [i];
1827 if (amodule->llvm_got) {
1828 for (i = 0; i < npatches; ++i)
1829 amodule->llvm_got [i] = amodule->shared_got [i];
1834 load_aot_module (MonoAssembly *assembly, gpointer user_data)
1837 MonoAotModule *amodule;
1839 gboolean usable = TRUE;
1840 char *version_symbol = NULL;
1842 gpointer *globals = NULL;
1843 MonoAotFileInfo *info = NULL;
1846 gboolean do_load_image = TRUE;
1847 int align_double, align_int64;
1849 if (mono_compile_aot)
1852 if (assembly->image->aot_module)
1854 * Already loaded. This can happen because the assembly loading code might invoke
1855 * the assembly load hooks multiple times for the same assembly.
1859 if (image_is_dynamic (assembly->image) || assembly->ref_only)
1863 if (static_aot_modules)
1864 info = g_hash_table_lookup (static_aot_modules, assembly->aname.name);
1872 /* Statically linked AOT module */
1873 aot_name = g_strdup_printf ("%s", assembly->aname.name);
1874 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "Found statically linked AOT module '%s'.\n", aot_name);
1875 globals = info->globals;
1877 if (enable_aot_cache)
1878 sofile = aot_cache_load_module (assembly, &aot_name);
1881 aot_name = g_strdup_printf ("%s%s", assembly->image->name, MONO_SOLIB_EXT);
1883 sofile = mono_dl_open (aot_name, MONO_DL_LAZY, &err);
1886 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module '%s' not found: %s\n", aot_name, err);
1889 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);
1890 sofile = mono_dl_open (aot_name, MONO_DL_LAZY, &err);
1892 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module '%s' not found: %s\n", aot_name, err);
1900 if (!sofile && !globals) {
1901 if (mono_aot_only && assembly->image->tables [MONO_TABLE_METHOD].rows)
1902 g_error ("Failed to load AOT module '%s' in aot-only mode.\n", aot_name);
1908 find_symbol (sofile, globals, "mono_aot_version", (gpointer *) &version_symbol);
1909 find_symbol (sofile, globals, "mono_aot_file_info", (gpointer*)&info);
1912 if (version_symbol) {
1913 /* Old file format */
1914 version = atoi (version_symbol);
1917 version = info->version;
1920 if (version != MONO_AOT_FILE_VERSION) {
1921 msg = g_strdup_printf ("wrong file format version (expected %d got %d)", MONO_AOT_FILE_VERSION, version);
1924 usable = check_usable (assembly, info, &msg);
1928 if (mono_aot_only) {
1929 g_error ("Failed to load AOT module '%s' while running in aot-only mode: %s.\n", aot_name, msg);
1931 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: module %s is unusable: %s.\n", aot_name, msg);
1936 mono_dl_close (sofile);
1937 assembly->image->aot_module = NULL;
1942 align_double = MONO_ABI_ALIGNOF (double);
1943 align_int64 = MONO_ABI_ALIGNOF (gint64);
1944 g_assert (info->double_align == align_double);
1945 g_assert (info->long_align == align_int64);
1946 g_assert (info->generic_tramp_num == MONO_TRAMPOLINE_NUM);
1950 amodule = g_new0 (MonoAotModule, 1);
1951 amodule->aot_name = aot_name;
1952 amodule->assembly = assembly;
1954 memcpy (&amodule->info, info, sizeof (*info));
1956 amodule->got = amodule->info.jit_got;
1957 amodule->llvm_got = amodule->info.llvm_got;
1958 amodule->globals = globals;
1959 amodule->sofile = sofile;
1960 amodule->method_to_code = g_hash_table_new (mono_aligned_addr_hash, NULL);
1961 amodule->extra_methods = g_hash_table_new (NULL, NULL);
1962 amodule->blob = blob;
1963 amodule->shared_got = g_new0 (gpointer, info->nshared_got_entries);
1965 mono_mutex_init_recursive (&amodule->mutex);
1967 /* Read image table */
1969 guint32 table_len, i;
1972 table = info->image_table;
1975 table_len = *(guint32*)table;
1976 table += sizeof (guint32);
1977 amodule->image_table = g_new0 (MonoImage*, table_len);
1978 amodule->image_names = g_new0 (MonoAssemblyName, table_len);
1979 amodule->image_guids = g_new0 (char*, table_len);
1980 amodule->image_table_len = table_len;
1981 for (i = 0; i < table_len; ++i) {
1982 MonoAssemblyName *aname = &(amodule->image_names [i]);
1984 aname->name = g_strdup (table);
1985 table += strlen (table) + 1;
1986 amodule->image_guids [i] = g_strdup (table);
1987 table += strlen (table) + 1;
1989 aname->culture = g_strdup (table);
1990 table += strlen (table) + 1;
1991 memcpy (aname->public_key_token, table, strlen (table) + 1);
1992 table += strlen (table) + 1;
1994 table = ALIGN_PTR_TO (table, 8);
1995 aname->flags = *(guint32*)table;
1997 aname->major = *(guint32*)table;
1999 aname->minor = *(guint32*)table;
2001 aname->build = *(guint32*)table;
2003 aname->revision = *(guint32*)table;
2008 amodule->jit_code_start = info->jit_code_start;
2009 amodule->jit_code_end = info->jit_code_end;
2010 amodule->method_info_offsets = info->method_info_offsets;
2011 amodule->ex_info_offsets = info->ex_info_offsets;
2012 amodule->class_info_offsets = info->class_info_offsets;
2013 amodule->class_name_table = info->class_name_table;
2014 amodule->extra_method_table = info->extra_method_table;
2015 amodule->extra_method_info_offsets = info->extra_method_info_offsets;
2016 amodule->unbox_trampolines = info->unbox_trampolines;
2017 amodule->unbox_trampolines_end = info->unbox_trampolines_end;
2018 amodule->unbox_trampoline_addresses = info->unbox_trampoline_addresses;
2019 amodule->unwind_info = info->unwind_info;
2020 amodule->mem_begin = amodule->jit_code_start;
2021 amodule->mem_end = info->mem_end;
2022 amodule->plt = info->plt;
2023 amodule->plt_end = info->plt_end;
2024 amodule->mono_eh_frame = info->mono_eh_frame;
2025 amodule->trampolines [MONO_AOT_TRAMP_SPECIFIC] = info->specific_trampolines;
2026 amodule->trampolines [MONO_AOT_TRAMP_STATIC_RGCTX] = info->static_rgctx_trampolines;
2027 amodule->trampolines [MONO_AOT_TRAMP_IMT_THUNK] = info->imt_thunks;
2028 amodule->trampolines [MONO_AOT_TRAMP_GSHAREDVT_ARG] = info->gsharedvt_arg_trampolines;
2030 if (!strcmp (assembly->aname.name, "mscorlib"))
2031 mscorlib_aot_module = amodule;
2033 /* Compute method addresses */
2034 amodule->methods = g_malloc0 (amodule->info.nmethods * sizeof (gpointer));
2035 for (i = 0; i < amodule->info.nmethods; ++i) {
2038 if (amodule->info.llvm_get_method) {
2039 gpointer (*get_method) (int) = amodule->info.llvm_get_method;
2041 addr = get_method (i);
2044 /* method_addresses () contains a table of branches, since the ios linker can update those correctly */
2045 if (!addr && amodule->info.method_addresses) {
2046 addr = get_call_table_entry (amodule->info.method_addresses, i);
2048 if (addr == amodule->info.method_addresses)
2052 amodule->methods [i] = GINT_TO_POINTER (-1);
2054 amodule->methods [i] = addr;
2057 if (make_unreadable) {
2058 #ifndef TARGET_WIN32
2060 guint8 *page_start, *page_end;
2063 addr = amodule->mem_begin;
2065 len = amodule->mem_end - amodule->mem_begin;
2067 /* Round down in both directions to avoid modifying data which is not ours */
2068 page_start = (guint8 *) (((gssize) (addr)) & ~ (mono_pagesize () - 1)) + mono_pagesize ();
2069 page_end = (guint8 *) (((gssize) (addr + len)) & ~ (mono_pagesize () - 1));
2070 if (page_end > page_start) {
2071 err = mono_mprotect (page_start, (page_end - page_start), MONO_MMAP_NONE);
2072 g_assert (err == 0);
2077 /* Compute the boundaries of LLVM code */
2078 if (info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM)
2079 compute_llvm_code_range (amodule, &amodule->llvm_code_start, &amodule->llvm_code_end);
2083 if (amodule->jit_code_start) {
2084 aot_code_low_addr = MIN (aot_code_low_addr, (gsize)amodule->jit_code_start);
2085 aot_code_high_addr = MAX (aot_code_high_addr, (gsize)amodule->jit_code_end);
2087 if (amodule->llvm_code_start) {
2088 aot_code_low_addr = MIN (aot_code_low_addr, (gsize)amodule->llvm_code_start);
2089 aot_code_high_addr = MAX (aot_code_high_addr, (gsize)amodule->llvm_code_end);
2092 g_hash_table_insert (aot_modules, assembly, amodule);
2095 if (amodule->jit_code_start)
2096 mono_jit_info_add_aot_module (assembly->image, amodule->jit_code_start, amodule->jit_code_end);
2097 if (amodule->llvm_code_start)
2098 mono_jit_info_add_aot_module (assembly->image, amodule->llvm_code_start, amodule->llvm_code_end);
2100 assembly->image->aot_module = amodule;
2102 if (mono_aot_only) {
2104 find_symbol (amodule->sofile, amodule->globals, "specific_trampolines_page", (gpointer *)&code);
2105 amodule->use_page_trampolines = code != NULL;
2106 /*g_warning ("using page trampolines: %d", amodule->use_page_trampolines);*/
2110 * Register the plt region as a single trampoline so we can unwind from this code
2112 mono_tramp_info_register (
2113 mono_tramp_info_create (
2116 amodule->plt_end - amodule->plt,
2118 mono_unwind_get_cie_program ()
2124 * Since we store methoddef and classdef tokens when referring to methods/classes in
2125 * referenced assemblies, we depend on the exact versions of the referenced assemblies.
2126 * MS calls this 'hard binding'. This means we have to load all referenced assemblies
2127 * non-lazily, since we can't handle out-of-date errors later.
2128 * The cached class info also depends on the exact assemblies.
2130 #if defined(__native_client__)
2131 /* TODO: Don't 'load_image' on mscorlib due to a */
2132 /* recursive loading problem. This should be */
2133 /* removed if mscorlib is loaded from disk. */
2134 if (strncmp(assembly->aname.name, "mscorlib", 8)) {
2135 do_load_image = TRUE;
2137 do_load_image = FALSE;
2140 if (do_load_image) {
2141 for (i = 0; i < amodule->image_table_len; ++i)
2142 load_image (amodule, i, FALSE);
2145 if (amodule->out_of_date) {
2146 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);
2148 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);
2151 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: loaded AOT Module for %s.\n", assembly->image->name);
2155 * mono_aot_register_globals:
2157 * This is called by the ctor function in AOT images compiled with the
2158 * 'no-dlsym' option.
2161 mono_aot_register_globals (gpointer *globals)
2163 g_assert_not_reached ();
2167 * mono_aot_register_module:
2169 * This should be called by embedding code to register AOT modules statically linked
2170 * into the executable. AOT_INFO should be the value of the
2171 * 'mono_aot_module_<ASSEMBLY_NAME>_info' global symbol from the AOT module.
2174 mono_aot_register_module (gpointer *aot_info)
2178 MonoAotFileInfo *info = (gpointer)aot_info;
2180 g_assert (info->version == MONO_AOT_FILE_VERSION);
2182 globals = info->globals;
2185 aname = info->assembly_name;
2187 /* This could be called before startup */
2191 if (!static_aot_modules)
2192 static_aot_modules = g_hash_table_new (g_str_hash, g_str_equal);
2194 g_hash_table_insert (static_aot_modules, aname, info);
2201 mono_aot_init (void)
2203 mono_mutex_init_recursive (&aot_mutex);
2204 mono_mutex_init_recursive (&aot_page_mutex);
2205 aot_modules = g_hash_table_new (NULL, NULL);
2207 #ifndef __native_client__
2208 mono_install_assembly_load_hook (load_aot_module, NULL);
2210 mono_counters_register ("Async JIT info size", MONO_COUNTER_INT|MONO_COUNTER_JIT, &async_jit_info_size);
2212 if (g_getenv ("MONO_LASTAOT"))
2213 mono_last_aot_method = atoi (g_getenv ("MONO_LASTAOT"));
2218 mono_aot_cleanup (void)
2220 if (aot_jit_icall_hash)
2221 g_hash_table_destroy (aot_jit_icall_hash);
2223 g_hash_table_destroy (aot_modules);
2227 decode_cached_class_info (MonoAotModule *module, MonoCachedClassInfo *info, guint8 *buf, guint8 **endbuf)
2233 info->vtable_size = decode_value (buf, &buf);
2234 if (info->vtable_size == -1)
2237 flags = decode_value (buf, &buf);
2238 info->ghcimpl = (flags >> 0) & 0x1;
2239 info->has_finalize = (flags >> 1) & 0x1;
2240 info->has_cctor = (flags >> 2) & 0x1;
2241 info->has_nested_classes = (flags >> 3) & 0x1;
2242 info->blittable = (flags >> 4) & 0x1;
2243 info->has_references = (flags >> 5) & 0x1;
2244 info->has_static_refs = (flags >> 6) & 0x1;
2245 info->no_special_static_fields = (flags >> 7) & 0x1;
2246 info->is_generic_container = (flags >> 8) & 0x1;
2248 if (info->has_cctor) {
2249 res = decode_method_ref (module, &ref, buf, &buf);
2252 info->cctor_token = ref.token;
2254 if (info->has_finalize) {
2255 res = decode_method_ref (module, &ref, buf, &buf);
2258 info->finalize_image = ref.image;
2259 info->finalize_token = ref.token;
2262 info->instance_size = decode_value (buf, &buf);
2263 info->class_size = decode_value (buf, &buf);
2264 info->packing_size = decode_value (buf, &buf);
2265 info->min_align = decode_value (buf, &buf);
2273 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
2276 MonoClass *klass = vtable->klass;
2277 MonoAotModule *amodule = klass->image->aot_module;
2279 MonoCachedClassInfo class_info;
2284 if (MONO_CLASS_IS_INTERFACE (klass) || klass->rank || !amodule)
2287 info = &amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
2290 err = decode_cached_class_info (amodule, &class_info, p, &p);
2294 for (i = 0; i < slot; ++i)
2295 decode_method_ref (amodule, &ref, p, &p);
2297 res = decode_method_ref (amodule, &ref, p, &p);
2300 if (ref.no_aot_trampoline)
2303 if (mono_metadata_token_index (ref.token) == 0 || mono_metadata_token_table (ref.token) != MONO_TABLE_METHOD)
2306 return mono_aot_get_method_from_token (domain, ref.image, ref.token);
2310 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
2312 MonoAotModule *amodule = klass->image->aot_module;
2316 if (klass->rank || !amodule)
2319 p = (guint8*)&amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
2321 err = decode_cached_class_info (amodule, res, p, &p);
2329 * mono_aot_get_class_from_name:
2331 * Obtains a MonoClass with a given namespace and a given name which is located in IMAGE,
2332 * using a cache stored in the AOT file.
2333 * Stores the resulting class in *KLASS if found, stores NULL otherwise.
2335 * Returns: TRUE if the klass was found/not found in the cache, FALSE if no aot file was
2339 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
2341 MonoAotModule *amodule = image->aot_module;
2342 guint16 *table, *entry;
2345 char full_name_buf [1024];
2347 const char *name2, *name_space2;
2349 guint32 cols [MONO_TYPEDEF_SIZE];
2350 GHashTable *nspace_table;
2352 if (!amodule || !amodule->class_name_table)
2355 amodule_lock (amodule);
2359 /* First look in the cache */
2360 if (!amodule->name_cache)
2361 amodule->name_cache = g_hash_table_new (g_str_hash, g_str_equal);
2362 nspace_table = g_hash_table_lookup (amodule->name_cache, name_space);
2364 *klass = g_hash_table_lookup (nspace_table, name);
2366 amodule_unlock (amodule);
2371 table_size = amodule->class_name_table [0];
2372 table = amodule->class_name_table + 1;
2374 if (name_space [0] == '\0')
2375 full_name = g_strdup_printf ("%s", name);
2377 if (strlen (name_space) + strlen (name) < 1000) {
2378 sprintf (full_name_buf, "%s.%s", name_space, name);
2379 full_name = full_name_buf;
2381 full_name = g_strdup_printf ("%s.%s", name_space, name);
2384 hash = mono_metadata_str_hash (full_name) % table_size;
2385 if (full_name != full_name_buf)
2388 entry = &table [hash * 2];
2390 if (entry [0] != 0) {
2391 t = &image->tables [MONO_TABLE_TYPEDEF];
2394 guint32 index = entry [0];
2395 guint32 next = entry [1];
2396 guint32 token = mono_metadata_make_token (MONO_TABLE_TYPEDEF, index);
2398 name_table_accesses ++;
2400 mono_metadata_decode_row (t, index - 1, cols, MONO_TYPEDEF_SIZE);
2402 name2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
2403 name_space2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
2405 if (!strcmp (name, name2) && !strcmp (name_space, name_space2)) {
2407 amodule_unlock (amodule);
2408 *klass = mono_class_get_checked (image, token, &error);
2409 if (!mono_error_ok (&error))
2410 mono_error_cleanup (&error); /* FIXME don't swallow the error */
2414 amodule_lock (amodule);
2415 nspace_table = g_hash_table_lookup (amodule->name_cache, name_space);
2416 if (!nspace_table) {
2417 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
2418 g_hash_table_insert (amodule->name_cache, (char*)name_space2, nspace_table);
2420 g_hash_table_insert (nspace_table, (char*)name2, *klass);
2421 amodule_unlock (amodule);
2427 entry = &table [next * 2];
2434 amodule_unlock (amodule);
2439 /* Compute the boundaries of the LLVM code for AMODULE. */
2441 compute_llvm_code_range (MonoAotModule *amodule, guint8 **code_start, guint8 **code_end)
2444 int version, fde_count;
2447 if (amodule->info.llvm_get_method) {
2448 gpointer (*get_method) (int) = amodule->info.llvm_get_method;
2450 *code_start = get_method (-1);
2451 *code_end = get_method (-2);
2453 g_assert (*code_end > *code_start);
2457 g_assert (amodule->mono_eh_frame);
2459 p = amodule->mono_eh_frame;
2461 /* p points to data emitted by LLVM in DwarfException::EmitMonoEHFrame () */
2465 g_assert (version == 3);
2468 p = ALIGN_PTR_TO (p, 4);
2470 fde_count = *(guint32*)p;
2474 if (fde_count > 0) {
2475 *code_start = amodule->methods [table [0]];
2476 *code_end = (guint8*)amodule->methods [table [(fde_count - 1) * 2]] + table [fde_count * 2];
2484 is_llvm_code (MonoAotModule *amodule, guint8 *code)
2486 if ((guint8*)code >= amodule->llvm_code_start && (guint8*)code < amodule->llvm_code_end)
2493 is_thumb_code (MonoAotModule *amodule, guint8 *code)
2495 if (is_llvm_code (amodule, code) && (amodule->info.flags & MONO_AOT_FILE_FLAG_LLVM_THUMB))
2502 * decode_llvm_mono_eh_frame:
2504 * Decode the EH information emitted by our modified LLVM compiler and construct a
2505 * MonoJitInfo structure from it.
2506 * LOCKING: Acquires the domain lock.
2509 decode_llvm_mono_eh_frame (MonoAotModule *amodule, MonoDomain *domain,
2510 MonoMethod *method, guint8 *code, guint32 code_len,
2511 MonoJitExceptionInfo *clauses, int num_clauses,
2512 MonoJitInfoFlags flags,
2514 int *this_reg, int *this_offset)
2516 guint8 *p, *code1, *code2;
2517 guint8 *fde, *cie, *code_start, *code_end;
2518 int version, fde_count;
2520 int i, pos, left, right;
2521 MonoJitExceptionInfo *ei;
2522 guint32 fde_len, ei_len, nested_len, nindex;
2523 gpointer *type_info;
2525 MonoLLVMFDEInfo info;
2527 if (!amodule->mono_eh_frame) {
2528 jinfo = mono_domain_alloc0_lock_free (domain, mono_jit_info_size (flags, num_clauses, 0));
2529 mono_jit_info_init (jinfo, method, code, code_len, flags, num_clauses, 0);
2530 memcpy (jinfo->clauses, clauses, num_clauses * sizeof (MonoJitExceptionInfo));
2534 g_assert (amodule->mono_eh_frame && code);
2536 p = amodule->mono_eh_frame;
2538 /* p points to data emitted by LLVM in DwarfMonoException::EmitMonoEHFrame () */
2542 g_assert (version == 3);
2544 /* func_encoding = *p; */
2546 p = ALIGN_PTR_TO (p, 4);
2548 fde_count = *(guint32*)p;
2552 /* There is +1 entry in the table */
2553 cie = p + ((fde_count + 1) * 8);
2555 /* Binary search in the table to find the entry for code */
2559 pos = (left + right) / 2;
2561 /* The table contains method index/fde offset pairs */
2562 g_assert (table [(pos * 2)] != -1);
2563 code1 = amodule->methods [table [(pos * 2)]];
2564 if (pos + 1 == fde_count) {
2565 code2 = amodule->llvm_code_end;
2567 g_assert (table [(pos + 1) * 2] != -1);
2568 code2 = amodule->methods [table [(pos + 1) * 2]];
2573 else if (code >= code2)
2579 code_start = amodule->methods [table [(pos * 2)]];
2580 if (pos + 1 == fde_count) {
2581 /* The +1 entry in the table contains the length of the last method */
2582 int len = table [(pos + 1) * 2];
2583 code_end = code_start + len;
2585 code_end = amodule->methods [table [(pos + 1) * 2]];
2588 code_len = code_end - code_start;
2590 g_assert (code >= code_start && code < code_end);
2592 if (is_thumb_code (amodule, code_start))
2593 /* Clear thumb flag */
2594 code_start = (guint8*)(((mgreg_t)code_start) & ~1);
2596 fde = amodule->mono_eh_frame + table [(pos * 2) + 1];
2597 /* This won't overflow because there is +1 entry in the table */
2598 fde_len = table [(pos * 2) + 2 + 1] - table [(pos * 2) + 1];
2600 mono_unwind_decode_llvm_mono_fde (fde, fde_len, cie, code_start, &info);
2602 ei_len = info.ex_info_len;
2603 type_info = info.type_info;
2604 *this_reg = info.this_reg;
2605 *this_offset = info.this_offset;
2607 /* Count number of nested clauses */
2609 for (i = 0; i < ei_len; ++i) {
2610 /* This might be unaligned */
2611 gint32 cindex1 = read32 (type_info [i]);
2614 for (l = nesting [cindex1]; l; l = l->next)
2619 * LLVM might represent one IL region with multiple regions, so have to
2620 * allocate a new JI.
2623 mono_domain_alloc0_lock_free (domain, mono_jit_info_size (flags, ei_len + nested_len, 0));
2624 mono_jit_info_init (jinfo, method, code, code_len, flags, ei_len + nested_len, 0);
2626 jinfo->unwind_info = mono_cache_unwind_info (info.unw_info, info.unw_info_len);
2627 /* This signals that unwind_info points to a normal cached unwind info */
2628 jinfo->from_aot = 0;
2629 jinfo->from_llvm = 1;
2631 for (i = 0; i < ei_len; ++i) {
2633 * clauses contains the original IL exception info saved by the AOT
2634 * compiler, we have to combine that with the information produced by LLVM
2636 /* The type_info entries contain IL clause indexes */
2637 int clause_index = read32 (type_info [i]);
2638 MonoJitExceptionInfo *jei = &jinfo->clauses [i];
2639 MonoJitExceptionInfo *orig_jei = &clauses [clause_index];
2641 g_assert (clause_index < num_clauses);
2642 jei->flags = orig_jei->flags;
2643 jei->data.catch_class = orig_jei->data.catch_class;
2645 jei->try_start = ei [i].try_start;
2646 jei->try_end = ei [i].try_end;
2647 jei->handler_start = ei [i].handler_start;
2648 jei->clause_index = clause_index;
2650 if (is_thumb_code (amodule, jei->try_start)) {
2651 jei->try_start = (void*)((mgreg_t)jei->try_start & ~1);
2652 jei->try_end = (void*)((mgreg_t)jei->try_end & ~1);
2653 /* Make sure we transition to thumb when a handler starts */
2654 jei->handler_start = (void*)((mgreg_t)jei->handler_start + 1);
2658 /* See exception_cb () in mini-llvm.c as to why this is needed */
2660 for (i = 0; i < ei_len; ++i) {
2661 gint32 cindex1 = read32 (type_info [i]);
2664 for (l = nesting [cindex1]; l; l = l->next) {
2665 gint32 nesting_cindex = GPOINTER_TO_INT (l->data);
2666 MonoJitExceptionInfo *nesting_ei;
2667 MonoJitExceptionInfo *nesting_clause = &clauses [nesting_cindex];
2669 nesting_ei = &jinfo->clauses [nindex];
2672 memcpy (nesting_ei, &jinfo->clauses [i], sizeof (MonoJitExceptionInfo));
2673 nesting_ei->flags = nesting_clause->flags;
2674 nesting_ei->data.catch_class = nesting_clause->data.catch_class;
2675 nesting_ei->clause_index = nesting_cindex;
2678 g_assert (nindex == ei_len + nested_len);
2684 alloc0_jit_info_data (MonoDomain *domain, int size, gboolean async_context)
2688 if (async_context) {
2689 res = mono_domain_alloc0_lock_free (domain, size);
2690 InterlockedExchangeAdd (&async_jit_info_size, size);
2692 res = mono_domain_alloc0 (domain, size);
2698 * LOCKING: Acquires the domain lock.
2699 * In async context, this is async safe.
2702 decode_exception_debug_info (MonoAotModule *amodule, MonoDomain *domain,
2703 MonoMethod *method, guint8* ex_info,
2704 guint8 *code, guint32 code_len)
2706 int i, buf_len, num_clauses, len;
2708 MonoJitInfoFlags flags = JIT_INFO_NONE;
2709 guint unwind_info, eflags;
2710 gboolean has_generic_jit_info, has_dwarf_unwind_info, has_clauses, has_seq_points, has_try_block_holes, has_arch_eh_jit_info;
2711 gboolean from_llvm, has_gc_map;
2713 int try_holes_info_size, num_holes;
2714 int this_reg = 0, this_offset = 0;
2717 /* Load the method info from the AOT file */
2718 async = mono_thread_info_is_async_context ();
2721 eflags = decode_value (p, &p);
2722 has_generic_jit_info = (eflags & 1) != 0;
2723 has_dwarf_unwind_info = (eflags & 2) != 0;
2724 has_clauses = (eflags & 4) != 0;
2725 has_seq_points = (eflags & 8) != 0;
2726 from_llvm = (eflags & 16) != 0;
2727 has_try_block_holes = (eflags & 32) != 0;
2728 has_gc_map = (eflags & 64) != 0;
2729 has_arch_eh_jit_info = (eflags & 128) != 0;
2731 if (has_dwarf_unwind_info) {
2732 unwind_info = decode_value (p, &p);
2733 g_assert (unwind_info < (1 << 30));
2735 unwind_info = decode_value (p, &p);
2737 if (has_generic_jit_info)
2738 flags |= JIT_INFO_HAS_GENERIC_JIT_INFO;
2740 if (has_try_block_holes) {
2741 num_holes = decode_value (p, &p);
2742 flags |= JIT_INFO_HAS_TRY_BLOCK_HOLES;
2743 try_holes_info_size = sizeof (MonoTryBlockHoleTableJitInfo) + num_holes * sizeof (MonoTryBlockHoleJitInfo);
2745 num_holes = try_holes_info_size = 0;
2748 if (has_arch_eh_jit_info) {
2749 flags |= JIT_INFO_HAS_ARCH_EH_INFO;
2750 /* Overwrite the original code_len which includes alignment padding */
2751 code_len = decode_value (p, &p);
2754 /* Exception table */
2756 num_clauses = decode_value (p, &p);
2761 MonoJitExceptionInfo *clauses;
2768 * Part of the info is encoded by the AOT compiler, the rest is in the .eh_frame
2771 clauses = g_new0 (MonoJitExceptionInfo, num_clauses);
2772 nesting = g_new0 (GSList*, num_clauses);
2774 for (i = 0; i < num_clauses; ++i) {
2775 MonoJitExceptionInfo *ei = &clauses [i];
2777 ei->flags = decode_value (p, &p);
2779 if (decode_value (p, &p))
2780 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
2782 ei->clause_index = i;
2784 ei->try_offset = decode_value (p, &p);
2785 ei->try_len = decode_value (p, &p);
2786 ei->handler_offset = decode_value (p, &p);
2787 ei->handler_len = decode_value (p, &p);
2789 /* Read the list of nesting clauses */
2791 int nesting_index = decode_value (p, &p);
2792 if (nesting_index == -1)
2794 nesting [i] = g_slist_prepend (nesting [i], GINT_TO_POINTER (nesting_index));
2798 jinfo = decode_llvm_mono_eh_frame (amodule, domain, method, code, code_len, clauses, num_clauses, flags, nesting, &this_reg, &this_offset);
2801 for (i = 0; i < num_clauses; ++i)
2802 g_slist_free (nesting [i]);
2805 len = mono_jit_info_size (flags, num_clauses, num_holes);
2806 jinfo = alloc0_jit_info_data (domain, len, async);
2807 mono_jit_info_init (jinfo, method, code, code_len, flags, num_clauses, num_holes);
2809 for (i = 0; i < jinfo->num_clauses; ++i) {
2810 MonoJitExceptionInfo *ei = &jinfo->clauses [i];
2812 ei->flags = decode_value (p, &p);
2814 #ifdef MONO_CONTEXT_SET_LLVM_EXC_REG
2815 /* Not used for catch clauses */
2816 if (ei->flags != MONO_EXCEPTION_CLAUSE_NONE)
2817 ei->exvar_offset = decode_value (p, &p);
2819 ei->exvar_offset = decode_value (p, &p);
2822 if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER || ei->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
2823 ei->data.filter = code + decode_value (p, &p);
2825 int len = decode_value (p, &p);
2831 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
2835 ei->try_start = code + decode_value (p, &p);
2836 ei->try_end = code + decode_value (p, &p);
2837 ei->handler_start = code + decode_value (p, &p);
2840 jinfo->unwind_info = unwind_info;
2841 jinfo->domain_neutral = 0;
2842 jinfo->from_aot = 1;
2845 if (has_try_block_holes) {
2846 MonoTryBlockHoleTableJitInfo *table;
2848 g_assert (jinfo->has_try_block_holes);
2850 table = mono_jit_info_get_try_block_hole_table_info (jinfo);
2853 table->num_holes = (guint16)num_holes;
2854 for (i = 0; i < num_holes; ++i) {
2855 MonoTryBlockHoleJitInfo *hole = &table->holes [i];
2856 hole->clause = decode_value (p, &p);
2857 hole->length = decode_value (p, &p);
2858 hole->offset = decode_value (p, &p);
2862 if (has_arch_eh_jit_info) {
2863 MonoArchEHJitInfo *eh_info;
2865 g_assert (jinfo->has_arch_eh_info);
2867 eh_info = mono_jit_info_get_arch_eh_info (jinfo);
2868 eh_info->stack_size = decode_value (p, &p);
2869 eh_info->epilog_size = decode_value (p, &p);
2873 /* The rest is not needed in async mode */
2874 jinfo->async = TRUE;
2875 jinfo->d.aot_info = amodule;
2880 if (has_generic_jit_info) {
2881 MonoGenericJitInfo *gi;
2884 g_assert (jinfo->has_generic_jit_info);
2886 gi = mono_jit_info_get_generic_jit_info (jinfo);
2889 gi->nlocs = decode_value (p, &p);
2891 gi->locations = alloc0_jit_info_data (domain, gi->nlocs * sizeof (MonoDwarfLocListEntry), async);
2892 for (i = 0; i < gi->nlocs; ++i) {
2893 MonoDwarfLocListEntry *entry = &gi->locations [i];
2895 entry->is_reg = decode_value (p, &p);
2896 entry->reg = decode_value (p, &p);
2898 entry->offset = decode_value (p, &p);
2900 entry->from = decode_value (p, &p);
2901 entry->to = decode_value (p, &p);
2906 gi->has_this = this_reg != -1;
2907 gi->this_reg = this_reg;
2908 gi->this_offset = this_offset;
2910 gi->has_this = decode_value (p, &p);
2911 gi->this_reg = decode_value (p, &p);
2912 gi->this_offset = decode_value (p, &p);
2916 len = decode_value (p, &p);
2920 jinfo->d.method = decode_resolve_method_ref (amodule, p, &p);
2922 gi->generic_sharing_context = g_new0 (MonoGenericSharingContext, 1);
2923 if (decode_value (p, &p)) {
2925 MonoGenericSharingContext *gsctx = gi->generic_sharing_context;
2927 gsctx->is_gsharedvt = TRUE;
2931 if (method && has_seq_points) {
2932 MonoSeqPointInfo *seq_points;
2934 p += mono_seq_point_info_read (&seq_points, p, FALSE);
2936 mono_domain_lock (domain);
2937 g_hash_table_insert (domain_jit_info (domain)->seq_points, method, seq_points);
2938 mono_domain_unlock (domain);
2941 /* Load debug info */
2942 buf_len = decode_value (p, &p);
2944 mono_debug_add_aot_method (domain, method, code, p, buf_len);
2948 int map_size = decode_value (p, &p);
2949 /* The GC map requires 4 bytes of alignment */
2950 while ((guint64)(gsize)p % 4)
2956 if (amodule != jinfo->d.method->klass->image->aot_module) {
2959 ji_to_amodule = g_hash_table_new (NULL, NULL);
2960 g_hash_table_insert (ji_to_amodule, jinfo, amodule);
2968 amodule_contains_code_addr (MonoAotModule *amodule, guint8 *code)
2970 return (code >= amodule->jit_code_start && code <= amodule->jit_code_end) ||
2971 (code >= amodule->llvm_code_start && code <= amodule->llvm_code_end);
2975 * mono_aot_get_unwind_info:
2977 * Return a pointer to the DWARF unwind info belonging to JI.
2980 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
2982 MonoAotModule *amodule;
2984 guint8 *code = ji->code_start;
2987 amodule = ji->d.aot_info;
2989 amodule = jinfo_get_method (ji)->klass->image->aot_module;
2991 g_assert (ji->from_aot);
2993 if (!amodule_contains_code_addr (amodule, code)) {
2994 /* ji belongs to a different aot module than amodule */
2996 g_assert (ji_to_amodule);
2997 amodule = g_hash_table_lookup (ji_to_amodule, ji);
2999 g_assert (amodule_contains_code_addr (amodule, code));
3003 p = amodule->unwind_info + ji->unwind_info;
3004 *unwind_info_len = decode_value (p, &p);
3009 msort_method_addresses_internal (gpointer *array, int *indexes, int lo, int hi, gpointer *scratch, int *scratch_indexes)
3011 int mid = (lo + hi) / 2;
3018 for (i = lo; i < hi; ++i)
3019 if (array [i] > array [i + 1])
3022 /* Already sorted */
3026 msort_method_addresses_internal (array, indexes, lo, mid, scratch, scratch_indexes);
3027 msort_method_addresses_internal (array, indexes, mid + 1, hi, scratch, scratch_indexes);
3029 if (array [mid] < array [mid + 1])
3035 for (i = lo; i <= hi; i ++) {
3036 if (t_lo <= mid && ((t_hi > hi) || array [t_lo] < array [t_hi])) {
3037 scratch [i] = array [t_lo];
3038 scratch_indexes [i] = indexes [t_lo];
3041 scratch [i] = array [t_hi];
3042 scratch_indexes [i] = indexes [t_hi];
3046 for (i = lo; i <= hi; ++i) {
3047 array [i] = scratch [i];
3048 indexes [i] = scratch_indexes [i];
3053 msort_method_addresses (gpointer *array, int *indexes, int len)
3056 int *scratch_indexes;
3058 scratch = g_new (gpointer, len);
3059 scratch_indexes = g_new (int, len);
3060 msort_method_addresses_internal (array, indexes, 0, len - 1, scratch, scratch_indexes);
3062 g_free (scratch_indexes);
3066 * mono_aot_find_jit_info:
3068 * In async context, the resulting MonoJitInfo will not have its method field set, and it will not be added
3069 * to the jit info tables.
3070 * FIXME: Large sizes in the lock free allocator
3073 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
3075 int pos, left, right, code_len;
3076 int method_index, table_len;
3078 MonoAotModule *amodule = image->aot_module;
3079 MonoMethod *method = NULL;
3081 guint8 *code, *ex_info, *p;
3085 guint8 *code1, *code2;
3092 nmethods = amodule->info.nmethods;
3094 if (domain != mono_get_root_domain ())
3098 if (!amodule_contains_code_addr (amodule, addr))
3101 async = mono_thread_info_is_async_context ();
3103 /* Compute a sorted table mapping code to method indexes. */
3104 if (!amodule->sorted_methods) {
3106 gpointer *methods = g_new0 (gpointer, nmethods);
3107 int *method_indexes = g_new0 (int, nmethods);
3108 int methods_len = 0;
3110 for (i = 0; i < nmethods; ++i) {
3111 /* Skip the -1 entries to speed up sorting */
3112 if (amodule->methods [i] == GINT_TO_POINTER (-1))
3114 methods [methods_len] = amodule->methods [i];
3115 method_indexes [methods_len] = i;
3118 /* Use a merge sort as this is mostly sorted */
3119 msort_method_addresses (methods, method_indexes, methods_len);
3120 for (i = 0; i < methods_len -1; ++i)
3121 g_assert (methods [i] <= methods [i + 1]);
3122 amodule->sorted_methods_len = methods_len;
3123 if (InterlockedCompareExchangePointer ((gpointer*)&amodule->sorted_methods, methods, NULL) != NULL)
3124 /* Somebody got in before us */
3126 if (InterlockedCompareExchangePointer ((gpointer*)&amodule->sorted_method_indexes, method_indexes, NULL) != NULL)
3127 /* Somebody got in before us */
3128 g_free (method_indexes);
3131 /* Binary search in the sorted_methods table */
3132 methods = amodule->sorted_methods;
3133 methods_len = amodule->sorted_methods_len;
3136 right = methods_len;
3138 pos = (left + right) / 2;
3140 code1 = methods [pos];
3141 if (pos + 1 == methods_len) {
3142 if (code1 >= amodule->jit_code_start && code1 < amodule->jit_code_end)
3143 code2 = amodule->jit_code_end;
3145 code2 = amodule->llvm_code_end;
3147 code2 = methods [pos + 1];
3152 else if (code >= code2)
3158 g_assert (addr >= methods [pos]);
3159 if (pos + 1 < methods_len)
3160 g_assert (addr < methods [pos + 1]);
3161 method_index = amodule->sorted_method_indexes [pos];
3163 /* In async mode, jinfo is not added to the normal jit info table, so have to cache it ourselves */
3165 JitInfoMap *table = amodule->async_jit_info_table;
3169 len = table [0].method_index;
3170 for (i = 1; i < len; ++i) {
3171 if (table [i].method_index == method_index)
3172 return table [i].jinfo;
3177 code = amodule->methods [method_index];
3178 ex_info = &amodule->blob [mono_aot_get_offset (amodule->ex_info_offsets, method_index)];
3180 if (pos == methods_len - 1) {
3181 if (code >= amodule->jit_code_start && code < amodule->jit_code_end)
3182 code_len = amodule->jit_code_end - code;
3184 code_len = amodule->llvm_code_end - code;
3186 code_len = (guint8*)methods [pos + 1] - (guint8*)methods [pos];
3189 g_assert ((guint8*)code <= (guint8*)addr && (guint8*)addr < (guint8*)code + code_len);
3191 /* Might be a wrapper/extra method */
3193 if (amodule->extra_methods) {
3194 amodule_lock (amodule);
3195 method = g_hash_table_lookup (amodule->extra_methods, GUINT_TO_POINTER (method_index));
3196 amodule_unlock (amodule);
3202 if (method_index >= image->tables [MONO_TABLE_METHOD].rows) {
3204 * This is hit for extra methods which are called directly, so they are
3205 * not in amodule->extra_methods.
3207 table_len = amodule->extra_method_info_offsets [0];
3208 table = amodule->extra_method_info_offsets + 1;
3215 pos = ((left + right) / 2);
3217 g_assert (pos < table_len);
3219 if (table [pos * 2] < method_index)
3221 else if (table [pos * 2] > method_index)
3227 p = amodule->blob + table [(pos * 2) + 1];
3228 method = decode_resolve_method_ref (amodule, p, &p);
3230 /* Happens when a random address is passed in which matches a not-yey called wrapper encoded using its name */
3233 token = mono_metadata_make_token (MONO_TABLE_METHOD, method_index + 1);
3234 method = mono_get_method (image, token, NULL);
3241 //printf ("F: %s\n", mono_method_full_name (method, TRUE));
3243 jinfo = decode_exception_debug_info (amodule, domain, method, ex_info, code, code_len);
3245 g_assert ((guint8*)addr >= (guint8*)jinfo->code_start);
3247 /* Add it to the normal JitInfo tables */
3249 JitInfoMap *old_table, *new_table;
3253 * Use a simple inmutable table with linear search to cache async jit info entries.
3254 * This assumes that the number of entries is small.
3257 /* Copy the table, adding a new entry at the end */
3258 old_table = amodule->async_jit_info_table;
3260 len = old_table[0].method_index;
3263 new_table = alloc0_jit_info_data (domain, (len + 1) * sizeof (JitInfoMap), async);
3265 memcpy (new_table, old_table, len * sizeof (JitInfoMap));
3266 new_table [0].method_index = len + 1;
3267 new_table [len].method_index = method_index;
3268 new_table [len].jinfo = jinfo;
3270 mono_memory_barrier ();
3271 if (InterlockedCompareExchangePointer ((gpointer)&amodule->async_jit_info_table, new_table, old_table) == old_table)
3275 mono_jit_info_table_add (domain, jinfo);
3278 if ((guint8*)addr >= (guint8*)jinfo->code_start + jinfo->code_size)
3279 /* addr is in the padding between methods, see the adjustment of code_size in decode_exception_debug_info () */
3286 decode_patch (MonoAotModule *aot_module, MonoMemPool *mp, MonoJumpInfo *ji, guint8 *buf, guint8 **endbuf)
3294 case MONO_PATCH_INFO_METHOD:
3295 case MONO_PATCH_INFO_METHOD_JUMP:
3296 case MONO_PATCH_INFO_ICALL_ADDR:
3297 case MONO_PATCH_INFO_METHOD_RGCTX:
3298 case MONO_PATCH_INFO_METHOD_CODE_SLOT: {
3302 res = decode_method_ref (aot_module, &ref, p, &p);
3306 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)) {
3307 ji->data.target = mono_create_ftnptr (mono_domain_get (), mono_create_jit_trampoline_from_token (ref.image, ref.token));
3308 ji->type = MONO_PATCH_INFO_ABS;
3312 ji->data.method = ref.method;
3314 ji->data.method = mono_get_method (ref.image, ref.token, NULL);
3315 g_assert (ji->data.method);
3316 mono_class_init (ji->data.method->klass);
3320 case MONO_PATCH_INFO_INTERNAL_METHOD:
3321 case MONO_PATCH_INFO_JIT_ICALL_ADDR: {
3322 guint32 len = decode_value (p, &p);
3324 ji->data.name = (char*)p;
3328 case MONO_PATCH_INFO_METHODCONST:
3330 ji->data.method = decode_resolve_method_ref (aot_module, p, &p);
3331 if (!ji->data.method)
3334 case MONO_PATCH_INFO_VTABLE:
3335 case MONO_PATCH_INFO_CLASS:
3336 case MONO_PATCH_INFO_IID:
3337 case MONO_PATCH_INFO_ADJUSTED_IID:
3339 ji->data.klass = decode_klass_ref (aot_module, p, &p);
3340 if (!ji->data.klass)
3343 case MONO_PATCH_INFO_DELEGATE_TRAMPOLINE:
3344 ji->data.del_tramp = mono_mempool_alloc0 (mp, sizeof (MonoDelegateClassMethodPair));
3345 ji->data.del_tramp->klass = decode_klass_ref (aot_module, p, &p);
3346 if (!ji->data.del_tramp->klass)
3348 if (decode_value (p, &p)) {
3349 ji->data.del_tramp->method = decode_resolve_method_ref (aot_module, p, &p);
3350 if (!ji->data.del_tramp->method)
3353 ji->data.del_tramp->is_virtual = decode_value (p, &p) ? TRUE : FALSE;
3355 case MONO_PATCH_INFO_IMAGE:
3356 ji->data.image = load_image (aot_module, decode_value (p, &p), TRUE);
3357 if (!ji->data.image)
3360 case MONO_PATCH_INFO_FIELD:
3361 case MONO_PATCH_INFO_SFLDA:
3363 ji->data.field = decode_field_info (aot_module, p, &p);
3364 if (!ji->data.field)
3367 case MONO_PATCH_INFO_SWITCH:
3368 ji->data.table = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoBBTable));
3369 ji->data.table->table_size = decode_value (p, &p);
3370 table = mono_domain_alloc (mono_domain_get (), sizeof (gpointer) * ji->data.table->table_size);
3371 ji->data.table->table = (MonoBasicBlock**)table;
3372 for (i = 0; i < ji->data.table->table_size; i++)
3373 table [i] = (gpointer)(gssize)decode_value (p, &p);
3375 case MONO_PATCH_INFO_R4: {
3378 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (float));
3379 val = decode_value (p, &p);
3380 *(float*)ji->data.target = *(float*)&val;
3383 case MONO_PATCH_INFO_R8: {
3387 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (double));
3389 val [0] = decode_value (p, &p);
3390 val [1] = decode_value (p, &p);
3391 v = ((guint64)val [1] << 32) | ((guint64)val [0]);
3392 *(double*)ji->data.target = *(double*)&v;
3395 case MONO_PATCH_INFO_LDSTR:
3396 image = load_image (aot_module, decode_value (p, &p), TRUE);
3399 ji->data.token = mono_jump_info_token_new (mp, image, MONO_TOKEN_STRING + decode_value (p, &p));
3401 case MONO_PATCH_INFO_RVA:
3402 case MONO_PATCH_INFO_DECLSEC:
3403 case MONO_PATCH_INFO_LDTOKEN:
3404 case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
3406 image = load_image (aot_module, decode_value (p, &p), TRUE);
3409 ji->data.token = mono_jump_info_token_new (mp, image, decode_value (p, &p));
3411 ji->data.token->has_context = decode_value (p, &p);
3412 if (ji->data.token->has_context) {
3413 gboolean res = decode_generic_context (aot_module, &ji->data.token->context, p, &p);
3418 case MONO_PATCH_INFO_EXC_NAME:
3419 ji->data.klass = decode_klass_ref (aot_module, p, &p);
3420 if (!ji->data.klass)
3422 ji->data.name = ji->data.klass->name;
3424 case MONO_PATCH_INFO_METHOD_REL:
3425 ji->data.offset = decode_value (p, &p);
3427 case MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG:
3428 case MONO_PATCH_INFO_GC_CARD_TABLE_ADDR:
3429 case MONO_PATCH_INFO_GC_NURSERY_START:
3430 case MONO_PATCH_INFO_GC_NURSERY_BITS:
3431 case MONO_PATCH_INFO_JIT_TLS_ID:
3433 case MONO_PATCH_INFO_CASTCLASS_CACHE:
3434 ji->data.index = decode_value (p, &p);
3436 case MONO_PATCH_INFO_RGCTX_FETCH:
3437 case MONO_PATCH_INFO_RGCTX_SLOT_INDEX: {
3439 MonoJumpInfoRgctxEntry *entry;
3440 guint32 offset, val;
3443 offset = decode_value (p, &p);
3444 val = decode_value (p, &p);
3446 entry = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
3447 p2 = aot_module->blob + offset;
3448 entry->method = decode_resolve_method_ref (aot_module, p2, &p2);
3449 entry->in_mrgctx = ((val & 1) > 0) ? TRUE : FALSE;
3450 entry->info_type = (val >> 1) & 0xff;
3451 entry->data = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
3452 entry->data->type = (val >> 9) & 0xff;
3454 res = decode_patch (aot_module, mp, entry->data, p, &p);
3457 ji->data.rgctx_entry = entry;
3460 case MONO_PATCH_INFO_SEQ_POINT_INFO:
3461 case MONO_PATCH_INFO_AOT_MODULE:
3462 case MONO_PATCH_INFO_MSCORLIB_GOT_ADDR:
3464 case MONO_PATCH_INFO_LLVM_IMT_TRAMPOLINE: {
3465 MonoJumpInfoImtTramp *imt_tramp = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoImtTramp));
3467 imt_tramp->method = decode_resolve_method_ref (aot_module, p, &p);
3468 imt_tramp->vt_offset = decode_value (p, &p);
3470 ji->data.imt_tramp = imt_tramp;
3473 case MONO_PATCH_INFO_SIGNATURE:
3474 ji->data.target = decode_signature (aot_module, p, &p);
3476 case MONO_PATCH_INFO_TLS_OFFSET:
3477 ji->data.target = GINT_TO_POINTER (decode_value (p, &p));
3479 case MONO_PATCH_INFO_GSHAREDVT_CALL: {
3480 MonoJumpInfoGSharedVtCall *info = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoGSharedVtCall));
3481 info->sig = decode_signature (aot_module, p, &p);
3482 g_assert (info->sig);
3483 info->method = decode_resolve_method_ref (aot_module, p, &p);
3484 g_assert (info->method);
3486 ji->data.target = info;
3489 case MONO_PATCH_INFO_GSHAREDVT_METHOD: {
3490 MonoGSharedVtMethodInfo *info = mono_mempool_alloc0 (mp, sizeof (MonoGSharedVtMethodInfo));
3493 info->method = decode_resolve_method_ref (aot_module, p, &p);
3494 g_assert (info->method);
3495 info->num_entries = decode_value (p, &p);
3496 info->count_entries = info->num_entries;
3497 info->entries = mono_mempool_alloc0 (mp, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->num_entries);
3498 for (i = 0; i < info->num_entries; ++i) {
3499 MonoRuntimeGenericContextInfoTemplate *template = &info->entries [i];
3501 template->info_type = decode_value (p, &p);
3502 switch (mini_rgctx_info_type_to_patch_info_type (template->info_type)) {
3503 case MONO_PATCH_INFO_CLASS: {
3504 MonoClass *klass = decode_klass_ref (aot_module, p, &p);
3507 template->data = &klass->byval_arg;
3510 case MONO_PATCH_INFO_FIELD:
3511 template->data = decode_field_info (aot_module, p, &p);
3512 if (!template->data)
3516 g_assert_not_reached ();
3520 ji->data.target = info;
3523 case MONO_PATCH_INFO_LDSTR_LIT: {
3524 int len = decode_value (p, &p);
3527 s = mono_mempool_alloc0 (mp, len + 1);
3528 memcpy (s, p, len + 1);
3531 ji->data.target = s;
3534 case MONO_PATCH_INFO_VIRT_METHOD: {
3535 MonoJumpInfoVirtMethod *info = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoVirtMethod));
3537 info->klass = decode_klass_ref (aot_module, p, &p);
3538 g_assert (info->klass);
3539 info->method = decode_resolve_method_ref (aot_module, p, &p);
3540 g_assert (info->method);
3542 ji->data.target = info;
3545 case MONO_PATCH_INFO_GC_SAFE_POINT_FLAG:
3547 case MONO_PATCH_INFO_AOT_JIT_INFO:
3548 ji->data.index = decode_value (p, &p);
3551 g_warning ("unhandled type %d", ji->type);
3552 g_assert_not_reached ();
3566 * Decode a list of patches identified by the got offsets in GOT_OFFSETS. Return an array of
3567 * MonoJumpInfo structures allocated from MP.
3569 static MonoJumpInfo*
3570 decode_patches (MonoAotModule *amodule, MonoMemPool *mp, int n_patches, gboolean llvm, guint32 *got_offsets)
3572 MonoJumpInfo *patches;
3575 guint32 *got_info_offsets;
3580 got = amodule->llvm_got;
3581 got_info_offsets = amodule->info.llvm_got_info_offsets;
3584 got_info_offsets = amodule->info.got_info_offsets;
3587 patches = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo) * n_patches);
3588 for (i = 0; i < n_patches; ++i) {
3589 guint8 *p = amodule->blob + mono_aot_get_offset (got_info_offsets, got_offsets [i]);
3592 ji->type = decode_value (p, &p);
3594 /* See load_method () for SFLDA */
3595 if (got && got [got_offsets [i]] && ji->type != MONO_PATCH_INFO_SFLDA) {
3596 /* Already loaded */
3598 res = decode_patch (amodule, mp, ji, p, &p);
3607 static MonoJumpInfo*
3608 load_patch_info (MonoAotModule *amodule, MonoMemPool *mp, int n_patches,
3609 gboolean llvm, guint32 **got_slots,
3610 guint8 *buf, guint8 **endbuf)
3612 MonoJumpInfo *patches;
3618 patches = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo) * n_patches);
3620 *got_slots = g_malloc (sizeof (guint32) * n_patches);
3621 for (pindex = 0; pindex < n_patches; ++pindex) {
3622 (*got_slots)[pindex] = decode_value (p, &p);
3625 patches = decode_patches (amodule, mp, n_patches, llvm, *got_slots);
3627 g_free (*got_slots);
3637 register_jump_target_got_slot (MonoDomain *domain, MonoMethod *method, gpointer *got_slot)
3640 * Jump addresses cannot be patched by the trampoline code since it
3641 * does not have access to the caller's address. Instead, we collect
3642 * the addresses of the GOT slots pointing to a method, and patch
3643 * them after the method has been compiled.
3645 MonoJitDomainInfo *info = domain_jit_info (domain);
3648 mono_domain_lock (domain);
3649 if (!info->jump_target_got_slot_hash)
3650 info->jump_target_got_slot_hash = g_hash_table_new (NULL, NULL);
3651 list = g_hash_table_lookup (info->jump_target_got_slot_hash, method);
3652 list = g_slist_prepend (list, got_slot);
3653 g_hash_table_insert (info->jump_target_got_slot_hash, method, list);
3654 mono_domain_unlock (domain);
3660 * Load the method identified by METHOD_INDEX from the AOT image. Return a
3661 * pointer to the native code of the method, or NULL if not found.
3662 * METHOD might not be set if the caller only has the image/token info.
3665 load_method (MonoDomain *domain, MonoAotModule *amodule, MonoImage *image, MonoMethod *method, guint32 token, int method_index)
3667 MonoJitInfo *jinfo = NULL;
3668 guint8 *code = NULL, *info;
3671 init_amodule_got (amodule);
3673 if (mono_profiler_get_events () & MONO_PROFILE_ENTER_LEAVE) {
3675 /* The caller cannot handle this */
3676 g_assert_not_reached ();
3680 if (domain != mono_get_root_domain ())
3681 /* Non shared AOT code can't be used in other appdomains */
3684 if (amodule->out_of_date)
3687 if (amodule->info.llvm_get_method) {
3689 * Obtain the method address by calling a generated function in the LLVM module.
3691 gpointer (*get_method) (int) = amodule->info.llvm_get_method;
3692 code = get_method (method_index);
3697 if (amodule->methods [method_index] == GINT_TO_POINTER (-1)) {
3698 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
3702 method = mono_get_method (image, token, NULL);
3703 full_name = mono_method_full_name (method, TRUE);
3704 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT: NOT FOUND: %s.", full_name);
3709 code = amodule->methods [method_index];
3712 info = &amodule->blob [mono_aot_get_offset (amodule->method_info_offsets, method_index)];
3714 if (!amodule->methods_loaded) {
3715 amodule_lock (amodule);
3716 if (!amodule->methods_loaded) {
3719 loaded = g_new0 (guint32, amodule->info.nmethods / 32 + 1);
3720 mono_memory_barrier ();
3721 amodule->methods_loaded = loaded;
3723 amodule_unlock (amodule);
3726 if ((amodule->methods_loaded [method_index / 32] >> (method_index % 32)) & 0x1)
3729 if (mono_last_aot_method != -1) {
3730 if (mono_jit_stats.methods_aot >= mono_last_aot_method)
3732 else if (mono_jit_stats.methods_aot == mono_last_aot_method - 1) {
3734 method = mono_get_method (image, token, NULL);
3736 char *name = mono_method_full_name (method, TRUE);
3737 g_print ("LAST AOT METHOD: %s.\n", name);
3740 g_print ("LAST AOT METHOD: %p %d\n", code, method_index);
3745 if (!(is_llvm_code (amodule, code) && (amodule->info.flags & MONO_AOT_FILE_FLAG_LLVM_ONLY))) {
3746 res = init_llvm_method (amodule, method_index, method, NULL, NULL);
3751 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
3755 method = mono_get_method (image, token, NULL);
3757 full_name = mono_method_full_name (method, TRUE);
3760 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
3762 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT: FOUND method %s [%p - %p %p]", full_name, code, code + jinfo->code_size, info);
3766 amodule_lock (amodule);
3768 InterlockedIncrement (&mono_jit_stats.methods_aot);
3770 amodule->methods_loaded [method_index / 32] |= 1 << (method_index % 32);
3774 if (method && method->wrapper_type)
3775 g_hash_table_insert (amodule->method_to_code, method, code);
3777 amodule_unlock (amodule);
3779 if (mono_profiler_get_events () & MONO_PROFILE_JIT_COMPILATION) {
3783 method = mono_get_method (amodule->assembly->image, token, NULL);
3786 mono_profiler_method_jit (method);
3787 jinfo = mono_jit_info_table_find (domain, (char*)code);
3789 mono_profiler_method_end_jit (method, jinfo, MONO_PROFILE_OK);
3802 find_aot_method_in_amodule (MonoAotModule *amodule, MonoMethod *method, guint32 hash_full)
3804 guint32 table_size, entry_size, hash;
3805 guint32 *table, *entry;
3807 static guint32 n_extra_decodes;
3809 if (!amodule || amodule->out_of_date)
3812 table_size = amodule->extra_method_table [0];
3813 hash = hash_full % table_size;
3814 table = amodule->extra_method_table + 1;
3817 entry = &table [hash * entry_size];
3824 guint32 key = entry [0];
3825 guint32 value = entry [1];
3826 guint32 next = entry [entry_size - 1];
3830 p = amodule->blob + key;
3833 amodule_lock (amodule);
3834 if (!amodule->method_ref_to_method)
3835 amodule->method_ref_to_method = g_hash_table_new (NULL, NULL);
3836 m = g_hash_table_lookup (amodule->method_ref_to_method, p);
3837 amodule_unlock (amodule);
3839 m = decode_resolve_method_ref_with_target (amodule, method, p, &p);
3841 * Can't catche runtime invoke wrappers since it would break
3842 * the check in decode_method_ref_with_target ().
3844 if (m && m->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE) {
3845 amodule_lock (amodule);
3846 g_hash_table_insert (amodule->method_ref_to_method, orig_p, m);
3847 amodule_unlock (amodule);
3855 /* Special case: wrappers of shared generic methods */
3856 if (m && method->wrapper_type && m->wrapper_type == m->wrapper_type &&
3857 method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
3858 MonoMethod *w1 = mono_marshal_method_from_wrapper (method);
3859 MonoMethod *w2 = mono_marshal_method_from_wrapper (m);
3861 if (w1->is_inflated && ((MonoMethodInflated *)w1)->declaring == w2) {
3867 /* Methods decoded needlessly */
3869 //printf ("%d %s %s %p\n", n_extra_decodes, mono_method_full_name (method, TRUE), mono_method_full_name (m, TRUE), orig_p);
3874 entry = &table [next * entry_size];
3883 add_module_cb (gpointer key, gpointer value, gpointer user_data)
3885 g_ptr_array_add ((GPtrArray*)user_data, value);
3891 * Try finding METHOD in the extra_method table in all AOT images.
3892 * Return its method index, or 0xffffff if not found. Set OUT_AMODULE to the AOT
3893 * module where the method was found.
3896 find_aot_method (MonoMethod *method, MonoAotModule **out_amodule)
3901 guint32 hash = mono_aot_method_hash (method);
3903 /* Try the method's module first */
3904 *out_amodule = method->klass->image->aot_module;
3905 index = find_aot_method_in_amodule (method->klass->image->aot_module, method, hash);
3906 if (index != 0xffffff)
3910 * Try all other modules.
3911 * This is needed because generic instances klass->image points to the image
3912 * containing the generic definition, but the native code is generated to the
3913 * AOT image which contains the reference.
3916 /* Make a copy to avoid doing the search inside the aot lock */
3917 modules = g_ptr_array_new ();
3919 g_hash_table_foreach (aot_modules, add_module_cb, modules);
3923 for (i = 0; i < modules->len; ++i) {
3924 MonoAotModule *amodule = g_ptr_array_index (modules, i);
3926 if (amodule != method->klass->image->aot_module)
3927 index = find_aot_method_in_amodule (amodule, method, hash);
3928 if (index != 0xffffff) {
3929 *out_amodule = amodule;
3934 g_ptr_array_free (modules, TRUE);
3940 mono_aot_find_method_index (MonoMethod *method)
3942 MonoAotModule *out_amodule;
3943 return find_aot_method (method, &out_amodule);
3947 init_llvm_method (MonoAotModule *amodule, guint32 method_index, MonoMethod *method, MonoClass *init_class, MonoGenericContext *context)
3949 MonoDomain *domain = mono_domain_get ();
3952 gboolean from_plt = method == NULL;
3953 int pindex, n_patches;
3955 MonoJitInfo *jinfo = NULL;
3956 guint8 *code, *info;
3958 code = amodule->methods [method_index];
3959 info = &amodule->blob [mono_aot_get_offset (amodule->method_info_offsets, method_index)];
3964 klass = method->klass;
3965 decode_klass_ref (amodule, p, &p);
3967 klass = decode_klass_ref (amodule, p, &p);
3970 n_patches = decode_value (p, &p);
3973 MonoJumpInfo *patches;
3978 mp = mono_mempool_new ();
3980 if ((gpointer)code >= amodule->info.jit_code_start && (gpointer)code <= amodule->info.jit_code_end) {
3985 got = amodule->llvm_got;
3989 patches = load_patch_info (amodule, mp, n_patches, llvm, &got_slots, p, &p);
3990 if (patches == NULL)
3993 for (pindex = 0; pindex < n_patches; ++pindex) {
3994 MonoJumpInfo *ji = &patches [pindex];
3998 * For SFLDA, we need to call resolve_patch_target () since the GOT slot could have
3999 * been initialized by load_method () for a static cctor before the cctor has
4000 * finished executing (#23242).
4002 if (!got [got_slots [pindex]] || ji->type == MONO_PATCH_INFO_SFLDA) {
4003 /* In llvm-only made, we might encounter shared methods */
4004 if (mono_llvm_only && ji->type == MONO_PATCH_INFO_METHOD && mono_method_check_context_used (ji->data.method)) {
4008 ji->data.method = mono_class_inflate_generic_method_checked (ji->data.method, context, &error);
4010 /* This cannot be resolved in mono_resolve_patch_target () */
4011 if (ji->type == MONO_PATCH_INFO_AOT_JIT_INFO) {
4012 // FIXME: Lookup using the index
4013 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
4014 ji->type = MONO_PATCH_INFO_ABS;
4015 ji->data.target = jinfo;
4017 addr = mono_resolve_patch_target (method, domain, code, ji, TRUE);
4018 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
4019 addr = mono_create_ftnptr (domain, addr);
4020 mono_memory_barrier ();
4021 got [got_slots [pindex]] = addr;
4022 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
4023 register_jump_target_got_slot (domain, ji->data.method, &(got [got_slots [pindex]]));
4025 ji->type = MONO_PATCH_INFO_NONE;
4030 mono_mempool_destroy (mp);
4033 if (mini_get_debug_options ()->load_aot_jit_info_eagerly)
4034 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
4037 mono_runtime_class_init (mono_class_vtable (domain, init_class));
4038 else if (from_plt && klass && !klass->generic_container)
4039 mono_runtime_class_init (mono_class_vtable (domain, klass));
4051 mono_aot_init_llvm_method (gpointer aot_module, guint32 method_index)
4053 MonoAotModule *amodule = aot_module;
4056 // FIXME: Handle failure
4057 res = init_llvm_method (amodule, method_index, NULL, NULL, NULL);
4062 mono_aot_init_gshared_method_this (gpointer aot_module, guint32 method_index, MonoObject *this)
4064 MonoAotModule *amodule = aot_module;
4067 MonoGenericContext *context;
4072 klass = this->vtable->klass;
4074 amodule_lock (amodule);
4075 method = g_hash_table_lookup (amodule->extra_methods, GUINT_TO_POINTER (method_index));
4076 amodule_unlock (amodule);
4079 context = mono_method_get_context (method);
4082 res = init_llvm_method (amodule, method_index, NULL, klass, context);
4087 mono_aot_init_gshared_method_rgctx (gpointer aot_module, guint32 method_index, MonoMethodRuntimeGenericContext *rgctx)
4089 MonoAotModule *amodule = aot_module;
4091 MonoGenericContext context = { NULL, NULL };
4092 MonoClass *klass = rgctx->class_vtable->klass;
4094 if (klass->generic_class)
4095 context.class_inst = klass->generic_class->context.class_inst;
4096 else if (klass->generic_container)
4097 context.class_inst = klass->generic_container->context.class_inst;
4098 context.method_inst = rgctx->method_inst;
4100 res = init_llvm_method (amodule, method_index, NULL, rgctx->class_vtable->klass, &context);
4105 * mono_aot_get_method:
4107 * Return a pointer to the AOTed native code for METHOD if it can be found,
4109 * On platforms with function pointers, this doesn't return a function pointer.
4112 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
4114 MonoClass *klass = method->klass;
4115 guint32 method_index;
4116 MonoAotModule *amodule = klass->image->aot_module;
4119 if (enable_aot_cache && !amodule && domain->entry_assembly && klass->image == mono_defaults.corlib) {
4120 /* This cannot be AOTed during startup, so do it now */
4121 if (!mscorlib_aot_loaded) {
4122 mscorlib_aot_loaded = TRUE;
4123 load_aot_module (klass->image->assembly, NULL);
4124 amodule = klass->image->aot_module;
4131 if (amodule->out_of_date)
4134 if ((method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
4135 (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
4136 (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
4137 (method->flags & METHOD_ATTRIBUTE_ABSTRACT))
4141 * Use the original method instead of its invoke-with-check wrapper.
4142 * This is not a problem when using full-aot, since it doesn't support
4145 if (mono_aot_only && method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)
4146 return mono_aot_get_method (domain, mono_marshal_method_from_wrapper (method));
4148 g_assert (klass->inited);
4150 /* Find method index */
4151 method_index = 0xffffff;
4152 if (method->is_inflated && !method->wrapper_type && mono_method_is_generic_sharable_full (method, TRUE, FALSE, FALSE)) {
4153 MonoMethod *orig_method = method;
4155 * For generic methods, we store the fully shared instance in place of the
4158 method = mono_method_get_declaring_generic_method (method);
4159 method_index = mono_metadata_token_index (method->token) - 1;
4161 if (mono_llvm_only) {
4162 /* Needed by mono_aot_init_gshared_method_this () */
4163 /* orig_method is a random instance but it is enough to make init_llvm_method () work */
4164 amodule_lock (amodule);
4165 g_hash_table_insert (amodule->extra_methods, GUINT_TO_POINTER (method_index), orig_method);
4166 amodule_unlock (amodule);
4168 } else if (method->is_inflated || !method->token) {
4169 /* This hash table is used to avoid the slower search in the extra_method_table in the AOT image */
4170 amodule_lock (amodule);
4171 code = g_hash_table_lookup (amodule->method_to_code, method);
4172 amodule_unlock (amodule);
4176 method_index = find_aot_method (method, &amodule);
4178 * Special case the ICollection<T> wrappers for arrays, as they cannot
4179 * be statically enumerated, and each wrapper ends up calling the same
4182 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED && method->klass->rank && strstr (method->name, "System.Collections.Generic")) {
4183 MonoMethod *m = mono_aot_get_array_helper_from_wrapper (method);
4185 code = mono_aot_get_method (domain, m);
4191 * Special case Array.GetGenericValueImpl which is a generic icall.
4192 * Generic sharing currently can't handle it, but the icall returns data using
4193 * an out parameter, so the managed-to-native wrappers can share the same code.
4195 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass == mono_defaults.array_class && !strcmp (method->name, "GetGenericValueImpl")) {
4198 MonoGenericContext ctx;
4199 MonoType *args [16];
4201 if (mono_method_signature (method)->params [1]->type == MONO_TYPE_OBJECT)
4202 /* Avoid recursion */
4205 m = mono_class_get_method_from_name (mono_defaults.array_class, "GetGenericValueImpl", 2);
4208 memset (&ctx, 0, sizeof (ctx));
4209 args [0] = &mono_defaults.object_class->byval_arg;
4210 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
4212 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method_checked (m, &ctx, &error), TRUE, TRUE);
4213 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
4216 * Get the code for the <object> instantiation which should be emitted into
4217 * the mscorlib aot image by the AOT compiler.
4219 code = mono_aot_get_method (domain, m);
4224 /* Same for CompareExchange<T> and Exchange<T> */
4225 /* Same for Volatile.Read<T>/Write<T> */
4226 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass->image == mono_defaults.corlib &&
4227 ((!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]))) ||
4228 (!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)))) ||
4229 (!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])))))) {
4232 MonoGenericContext ctx;
4233 MonoType *args [16];
4234 gpointer iter = NULL;
4236 while ((m = mono_class_get_methods (method->klass, &iter))) {
4237 if (mono_method_signature (m)->generic_param_count && !strcmp (m->name, method->name))
4242 memset (&ctx, 0, sizeof (ctx));
4243 args [0] = &mono_defaults.object_class->byval_arg;
4244 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
4246 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method_checked (m, &ctx, &error), TRUE, TRUE);
4247 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
4249 /* Avoid recursion */
4254 * Get the code for the <object> instantiation which should be emitted into
4255 * the mscorlib aot image by the AOT compiler.
4257 code = mono_aot_get_method (domain, m);
4262 if (method_index == 0xffffff && method->is_inflated && mono_method_is_generic_sharable_full (method, FALSE, TRUE, FALSE)) {
4263 /* Partial sharing */
4266 shared = mini_get_shared_method (method);
4267 method_index = find_aot_method (shared, &amodule);
4268 if (method_index != 0xffffff)
4272 if (method_index == 0xffffff && method->is_inflated && mono_method_is_generic_sharable_full (method, FALSE, FALSE, TRUE)) {
4274 /* Use the all-vt shared method since this is what was AOTed */
4275 method_index = find_aot_method (mini_get_shared_method_full (method, TRUE, TRUE), &amodule);
4276 if (method_index != 0xffffff)
4277 method = mini_get_shared_method_full (method, TRUE, FALSE);
4280 if (method_index == 0xffffff) {
4281 if (mono_aot_only && mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
4284 full_name = mono_method_full_name (method, TRUE);
4285 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.", full_name);
4291 if (method_index == 0xffffff)
4294 /* Needed by find_jit_info */
4295 amodule_lock (amodule);
4296 g_hash_table_insert (amodule->extra_methods, GUINT_TO_POINTER (method_index), method);
4297 amodule_unlock (amodule);
4300 method_index = mono_metadata_token_index (method->token) - 1;
4303 return load_method (domain, amodule, klass->image, method, method->token, method_index);
4307 * Same as mono_aot_get_method, but we try to avoid loading any metadata from the
4311 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
4313 MonoAotModule *aot_module = image->aot_module;
4319 method_index = mono_metadata_token_index (token) - 1;
4321 return load_method (domain, aot_module, image, NULL, token, method_index);
4327 } IsGotEntryUserData;
4330 check_is_got_entry (gpointer key, gpointer value, gpointer user_data)
4332 IsGotEntryUserData *data = (IsGotEntryUserData*)user_data;
4333 MonoAotModule *aot_module = (MonoAotModule*)value;
4335 if (aot_module->got && (data->addr >= (guint8*)(aot_module->got)) && (data->addr < (guint8*)(aot_module->got + aot_module->info.got_size)))
4340 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
4342 IsGotEntryUserData user_data;
4347 user_data.addr = addr;
4348 user_data.res = FALSE;
4350 g_hash_table_foreach (aot_modules, check_is_got_entry, &user_data);
4353 return user_data.res;
4358 MonoAotModule *module;
4359 } FindAotModuleUserData;
4362 find_aot_module_cb (gpointer key, gpointer value, gpointer user_data)
4364 FindAotModuleUserData *data = (FindAotModuleUserData*)user_data;
4365 MonoAotModule *aot_module = (MonoAotModule*)value;
4367 if (amodule_contains_code_addr (aot_module, data->addr))
4368 data->module = aot_module;
4371 static inline MonoAotModule*
4372 find_aot_module (guint8 *code)
4374 FindAotModuleUserData user_data;
4379 /* Reading these need no locking */
4380 if (((gsize)code < aot_code_low_addr) || ((gsize)code > aot_code_high_addr))
4383 user_data.addr = code;
4384 user_data.module = NULL;
4387 g_hash_table_foreach (aot_modules, find_aot_module_cb, &user_data);
4390 return user_data.module;
4394 mono_aot_patch_plt_entry (guint8 *code, guint8 *plt_entry, gpointer *got, mgreg_t *regs, guint8 *addr)
4396 MonoAotModule *amodule;
4399 * Since AOT code is only used in the root domain,
4400 * mono_domain_get () != mono_get_root_domain () means the calling method
4401 * is AppDomain:InvokeInDomain, so this is the same check as in
4402 * mono_method_same_domain () but without loading the metadata for the method.
4404 if (mono_domain_get () == mono_get_root_domain ()) {
4406 amodule = find_aot_module (code);
4410 mono_arch_patch_plt_entry (plt_entry, got, regs, addr);
4415 * mono_aot_plt_resolve:
4417 * This function is called by the entries in the PLT to resolve the actual method that
4418 * needs to be called. It returns a trampoline to the method and patches the PLT entry.
4419 * Returns NULL if the something cannot be loaded.
4422 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
4424 #ifdef MONO_ARCH_AOT_SUPPORTED
4425 guint8 *p, *target, *plt_entry;
4427 MonoAotModule *module = (MonoAotModule*)aot_module;
4428 gboolean res, no_ftnptr = FALSE;
4430 gboolean using_gsharedvt = FALSE;
4432 //printf ("DYN: %p %d\n", aot_module, plt_info_offset);
4434 p = &module->blob [plt_info_offset];
4436 ji.type = decode_value (p, &p);
4438 mp = mono_mempool_new ();
4439 res = decode_patch (module, mp, &ji, p, &p);
4442 mono_mempool_destroy (mp);
4446 #ifdef MONO_ARCH_GSHAREDVT_SUPPORTED
4447 using_gsharedvt = TRUE;
4451 * Avoid calling resolve_patch_target in the full-aot case if possible, since
4452 * it would create a trampoline, and we don't need that.
4453 * We could do this only if the method does not need the special handling
4454 * in mono_magic_trampoline ().
4456 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) &&
4457 !mono_method_needs_static_rgctx_invoke (ji.data.method, FALSE) && !using_gsharedvt) {
4458 target = mono_jit_compile_method (ji.data.method);
4461 target = mono_resolve_patch_target (NULL, mono_domain_get (), NULL, &ji, TRUE);
4465 * The trampoline expects us to return a function descriptor on platforms which use
4466 * it, but resolve_patch_target returns a direct function pointer for some type of
4467 * patches, so have to translate between the two.
4468 * FIXME: Clean this up, but how ?
4470 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) {
4471 /* These should already have a function descriptor */
4472 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
4473 /* Our function descriptors have a 0 environment, gcc created ones don't */
4474 if (ji.type != MONO_PATCH_INFO_INTERNAL_METHOD && ji.type != MONO_PATCH_INFO_JIT_ICALL_ADDR && ji.type != MONO_PATCH_INFO_ICALL_ADDR)
4475 g_assert (((gpointer*)target) [2] == 0);
4478 } else if (!no_ftnptr) {
4479 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
4480 g_assert (((gpointer*)target) [2] != 0);
4482 target = mono_create_ftnptr (mono_domain_get (), target);
4485 mono_mempool_destroy (mp);
4487 /* Patch the PLT entry with target which might be the actual method not a trampoline */
4488 plt_entry = mono_aot_get_plt_entry (code);
4489 g_assert (plt_entry);
4490 mono_aot_patch_plt_entry (code, plt_entry, module->got, NULL, target);
4494 g_assert_not_reached ();
4502 * Initialize the PLT table of the AOT module. Called lazily when the first AOT
4503 * method in the module is loaded to avoid committing memory by writing to it.
4504 * LOCKING: Assumes the AMODULE lock is held.
4507 init_plt (MonoAotModule *amodule)
4512 if (amodule->plt_inited)
4515 if (amodule->info.plt_size <= 1) {
4516 amodule->plt_inited = TRUE;
4520 tramp = mono_create_specific_trampoline (amodule, MONO_TRAMPOLINE_AOT_PLT, mono_get_root_domain (), NULL);
4523 * Initialize the PLT entries in the GOT to point to the default targets.
4526 tramp = mono_create_ftnptr (mono_domain_get (), tramp);
4527 for (i = 1; i < amodule->info.plt_size; ++i)
4528 /* All the default entries point to the AOT trampoline */
4529 ((gpointer*)amodule->got)[amodule->info.plt_got_offset_base + i] = tramp;
4531 amodule->plt_inited = TRUE;
4535 * mono_aot_get_plt_entry:
4537 * Return the address of the PLT entry called by the code at CODE if exists.
4540 mono_aot_get_plt_entry (guint8 *code)
4542 MonoAotModule *amodule = find_aot_module (code);
4543 guint8 *target = NULL;
4549 if (is_thumb_code (amodule, code))
4550 return mono_arm_get_thumb_plt_entry (code);
4553 #ifdef MONO_ARCH_AOT_SUPPORTED
4554 target = mono_arch_get_call_target (code);
4556 g_assert_not_reached ();
4560 while (target != NULL) {
4561 if ((target >= (guint8*)(amodule->plt)) && (target < (guint8*)(amodule->plt_end)))
4564 // Add 4 since mono_arch_get_call_target assumes we're passing
4565 // the instruction after the actual branch instruction.
4566 target = mono_arch_get_call_target (target + 4);
4571 if ((target >= (guint8*)(amodule->plt)) && (target < (guint8*)(amodule->plt_end)))
4579 * mono_aot_get_plt_info_offset:
4581 * Return the PLT info offset belonging to the plt entry called by CODE.
4584 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
4586 guint8 *plt_entry = mono_aot_get_plt_entry (code);
4588 g_assert (plt_entry);
4590 /* The offset is embedded inside the code after the plt entry */
4591 #ifdef MONO_ARCH_AOT_SUPPORTED
4592 return mono_arch_get_plt_info_offset (plt_entry, regs, code);
4594 g_assert_not_reached ();
4600 mono_create_ftnptr_malloc (guint8 *code)
4602 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
4603 MonoPPCFunctionDescriptor *ftnptr = g_malloc0 (sizeof (MonoPPCFunctionDescriptor));
4605 ftnptr->code = code;
4616 * mono_aot_register_jit_icall:
4618 * Register a JIT icall which is called by trampolines in full-aot mode. This should
4619 * be called from mono_arch_init () during startup.
4622 mono_aot_register_jit_icall (const char *name, gpointer addr)
4624 /* No need for locking */
4625 if (!aot_jit_icall_hash)
4626 aot_jit_icall_hash = g_hash_table_new (g_str_hash, g_str_equal);
4627 g_hash_table_insert (aot_jit_icall_hash, (char*)name, addr);
4631 * load_function_full:
4633 * Load the function named NAME from the aot image.
4636 load_function_full (MonoAotModule *amodule, const char *name, MonoTrampInfo **out_tinfo)
4640 int n_patches, pindex;
4643 guint32 info_offset;
4647 symbol = g_strdup_printf ("%s", name);
4648 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&code);
4651 g_error ("Symbol '%s' not found in AOT file '%s'.\n", name, amodule->aot_name);
4653 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT: FOUND function '%s' in AOT file '%s'.", name, amodule->aot_name);
4657 symbol = g_strdup_printf ("%s_p", name);
4658 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&p);
4661 /* Nothing to patch */
4664 info_offset = *(guint32*)p;
4666 MonoTrampInfo *tinfo;
4667 guint32 code_size, uw_info_len, uw_offset;
4669 /* Construct a MonoTrampInfo from the data in the AOT image */
4671 p += sizeof (guint32);
4672 code_size = *(guint32*)p;
4673 p += sizeof (guint32);
4674 uw_offset = *(guint32*)p;
4675 uw_info = amodule->unwind_info + uw_offset;
4676 uw_info_len = decode_value (uw_info, &uw_info);
4678 tinfo = g_new0 (MonoTrampInfo, 1);
4680 tinfo->code_size = code_size;
4681 tinfo->uw_info = uw_info;
4682 tinfo->uw_info_len = uw_info_len;
4687 p = amodule->blob + info_offset;
4689 /* Similar to mono_aot_load_method () */
4691 n_patches = decode_value (p, &p);
4694 MonoJumpInfo *patches;
4697 mp = mono_mempool_new ();
4699 patches = load_patch_info (amodule, mp, n_patches, FALSE, &got_slots, p, &p);
4702 for (pindex = 0; pindex < n_patches; ++pindex) {
4703 MonoJumpInfo *ji = &patches [pindex];
4706 if (amodule->got [got_slots [pindex]])
4710 * When this code is executed, the runtime may not be initalized yet, so
4711 * resolve the patch info by hand.
4713 if (ji->type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
4714 if (!strcmp (ji->data.name, "mono_get_lmf_addr")) {
4715 target = mono_get_lmf_addr;
4716 } else if (!strcmp (ji->data.name, "mono_thread_force_interruption_checkpoint")) {
4717 target = mono_thread_force_interruption_checkpoint;
4718 } else if (!strcmp (ji->data.name, "mono_exception_from_token")) {
4719 target = mono_exception_from_token;
4720 } else if (!strcmp (ji->data.name, "mono_throw_exception")) {
4721 target = mono_get_throw_exception ();
4722 } else if (strstr (ji->data.name, "trampoline_func_") == ji->data.name) {
4723 int tramp_type2 = atoi (ji->data.name + strlen ("trampoline_func_"));
4724 target = (gpointer)mono_get_trampoline_func (tramp_type2);
4725 } else if (strstr (ji->data.name, "specific_trampoline_lazy_fetch_") == ji->data.name) {
4726 /* atoll is needed because the the offset is unsigned */
4730 res = sscanf (ji->data.name, "specific_trampoline_lazy_fetch_%u", &slot);
4731 g_assert (res == 1);
4732 target = mono_create_specific_trampoline (GUINT_TO_POINTER (slot), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, mono_get_root_domain (), NULL);
4733 target = mono_create_ftnptr_malloc (target);
4734 } else if (!strcmp (ji->data.name, "mono_thread_get_and_clear_pending_exception")) {
4735 target = mono_thread_get_and_clear_pending_exception;
4736 } else if (!strcmp (ji->data.name, "debugger_agent_single_step_from_context")) {
4737 target = debugger_agent_single_step_from_context;
4738 } else if (!strcmp (ji->data.name, "debugger_agent_breakpoint_from_context")) {
4739 target = debugger_agent_breakpoint_from_context;
4740 } else if (strstr (ji->data.name, "generic_trampoline_")) {
4741 target = mono_aot_get_trampoline (ji->data.name);
4742 } else if (aot_jit_icall_hash && g_hash_table_lookup (aot_jit_icall_hash, ji->data.name)) {
4743 /* Registered by mono_arch_init () */
4744 target = g_hash_table_lookup (aot_jit_icall_hash, ji->data.name);
4746 fprintf (stderr, "Unknown relocation '%s'\n", ji->data.name);
4747 g_assert_not_reached ();
4751 /* Hopefully the code doesn't have patches which need method or
4754 target = mono_resolve_patch_target (NULL, NULL, code, ji, FALSE);
4758 amodule->got [got_slots [pindex]] = target;
4763 mono_mempool_destroy (mp);
4770 load_function (MonoAotModule *amodule, const char *name)
4772 return load_function_full (amodule, name, NULL);
4775 static MonoAotModule*
4776 get_mscorlib_aot_module (void)
4779 MonoAotModule *amodule;
4781 image = mono_defaults.corlib;
4783 amodule = image->aot_module;
4785 amodule = mscorlib_aot_module;
4791 no_trampolines (void)
4793 g_assert_not_reached ();
4797 * Return the trampoline identified by NAME from the mscorlib AOT file.
4798 * On ppc64, this returns a function descriptor.
4801 mono_aot_get_trampoline_full (const char *name, MonoTrampInfo **out_tinfo)
4803 MonoAotModule *amodule = get_mscorlib_aot_module ();
4805 if (mono_llvm_only) {
4807 return no_trampolines;
4810 return mono_create_ftnptr_malloc (load_function_full (amodule, name, out_tinfo));
4814 mono_aot_get_trampoline (const char *name)
4816 MonoTrampInfo *out_tinfo;
4819 code = mono_aot_get_trampoline_full (name, &out_tinfo);
4820 mono_tramp_info_register (out_tinfo, NULL);
4826 read_unwind_info (MonoAotModule *amodule, MonoTrampInfo *info, const char *symbol_name)
4828 gpointer symbol_addr;
4829 guint32 uw_offset, uw_info_len;
4832 find_symbol (amodule->sofile, amodule->globals, symbol_name, &symbol_addr);
4837 uw_offset = *(guint32*)symbol_addr;
4838 uw_info = amodule->unwind_info + uw_offset;
4839 uw_info_len = decode_value (uw_info, &uw_info);
4841 info->uw_info = uw_info;
4842 info->uw_info_len = uw_info_len;
4844 /* If successful return the address of the following data */
4845 return (guint32*)symbol_addr + 1;
4849 #include <mach/mach.h>
4851 static TrampolinePage* trampoline_pages [MONO_AOT_TRAMP_NUM];
4854 read_page_trampoline_uwinfo (MonoTrampInfo *info, int tramp_type, gboolean is_generic)
4856 char symbol_name [128];
4858 if (tramp_type == MONO_AOT_TRAMP_SPECIFIC)
4859 sprintf (symbol_name, "specific_trampolines_page_%s_p", is_generic ? "gen" : "sp");
4860 else if (tramp_type == MONO_AOT_TRAMP_STATIC_RGCTX)
4861 sprintf (symbol_name, "rgctx_trampolines_page_%s_p", is_generic ? "gen" : "sp");
4862 else if (tramp_type == MONO_AOT_TRAMP_IMT_THUNK)
4863 sprintf (symbol_name, "imt_trampolines_page_%s_p", is_generic ? "gen" : "sp");
4864 else if (tramp_type == MONO_AOT_TRAMP_GSHAREDVT_ARG)
4865 sprintf (symbol_name, "gsharedvt_trampolines_page_%s_p", is_generic ? "gen" : "sp");
4867 g_assert_not_reached ();
4869 read_unwind_info (mono_defaults.corlib->aot_module, info, symbol_name);
4872 static unsigned char*
4873 get_new_trampoline_from_page (int tramp_type)
4875 MonoAotModule *amodule;
4877 TrampolinePage *page;
4880 vm_address_t addr, taddr;
4882 vm_prot_t prot, max_prot;
4883 int psize, specific_trampoline_size;
4884 unsigned char *code;
4886 specific_trampoline_size = 2 * sizeof (gpointer);
4888 mono_aot_page_lock ();
4889 page = trampoline_pages [tramp_type];
4890 if (page && page->trampolines < page->trampolines_end) {
4891 code = page->trampolines;
4892 page->trampolines += specific_trampoline_size;
4893 mono_aot_page_unlock ();
4896 mono_aot_page_unlock ();
4897 /* the trampoline template page is in the mscorlib module */
4898 image = mono_defaults.corlib;
4901 psize = MONO_AOT_TRAMP_PAGE_SIZE;
4903 amodule = image->aot_module;
4906 if (tramp_type == MONO_AOT_TRAMP_SPECIFIC)
4907 tpage = load_function (amodule, "specific_trampolines_page");
4908 else if (tramp_type == MONO_AOT_TRAMP_STATIC_RGCTX)
4909 tpage = load_function (amodule, "rgctx_trampolines_page");
4910 else if (tramp_type == MONO_AOT_TRAMP_IMT_THUNK)
4911 tpage = load_function (amodule, "imt_trampolines_page");
4912 else if (tramp_type == MONO_AOT_TRAMP_GSHAREDVT_ARG)
4913 tpage = load_function (amodule, "gsharedvt_arg_trampolines_page");
4915 g_error ("Incorrect tramp type for trampolines page");
4917 /*g_warning ("loaded trampolines page at %x", tpage);*/
4919 /* avoid the unlikely case of looping forever */
4922 while (page == NULL && count-- > 0) {
4923 MonoTrampInfo *gen_info, *sp_info;
4926 /* allocate two contiguous pages of memory: the first page will contain the data (like a local constant pool)
4927 * while the second will contain the trampolines.
4929 ret = vm_allocate (mach_task_self (), &addr, psize * 2, VM_FLAGS_ANYWHERE);
4930 if (ret != KERN_SUCCESS) {
4931 g_error ("Cannot allocate memory for trampolines: %d", ret);
4934 /*g_warning ("allocated trampoline double page at %x", addr);*/
4935 /* replace the second page with a remapped trampoline page */
4936 taddr = addr + psize;
4937 vm_deallocate (mach_task_self (), taddr, psize);
4938 ret = vm_remap (mach_task_self (), &taddr, psize, 0, FALSE, mach_task_self(), (vm_address_t)tpage, FALSE, &prot, &max_prot, VM_INHERIT_SHARE);
4939 if (ret != KERN_SUCCESS) {
4940 /* someone else got the page, try again */
4941 vm_deallocate (mach_task_self (), addr, psize);
4944 /*g_warning ("remapped trampoline page at %x", taddr);*/
4946 mono_aot_page_lock ();
4947 page = trampoline_pages [tramp_type];
4948 /* some other thread already allocated, so use that to avoid wasting memory */
4949 if (page && page->trampolines < page->trampolines_end) {
4950 code = page->trampolines;
4951 page->trampolines += specific_trampoline_size;
4952 mono_aot_page_unlock ();
4953 vm_deallocate (mach_task_self (), addr, psize);
4954 vm_deallocate (mach_task_self (), taddr, psize);
4957 page = (TrampolinePage*)addr;
4958 page->next = trampoline_pages [tramp_type];
4959 trampoline_pages [tramp_type] = page;
4960 page->trampolines = (void*)(taddr + amodule->info.tramp_page_code_offsets [tramp_type]);
4961 page->trampolines_end = (void*)(taddr + psize - 64);
4962 code = page->trampolines;
4963 page->trampolines += specific_trampoline_size;
4964 mono_aot_page_unlock ();
4966 /* Register the generic part at the beggining of the trampoline page */
4967 gen_info = mono_tramp_info_create (NULL, (guint8*)taddr, amodule->info.tramp_page_code_offsets [tramp_type], NULL, NULL);
4968 read_page_trampoline_uwinfo (gen_info, tramp_type, TRUE);
4969 mono_tramp_info_register (gen_info, NULL);
4972 * Registering each specific trampoline produces a lot of
4973 * MonoJitInfo structures. Jump trampolines are also registered
4976 if (tramp_type != MONO_AOT_TRAMP_SPECIFIC) {
4977 /* Register the rest of the page as a single trampoline */
4978 sp_info = mono_tramp_info_create (NULL, code, page->trampolines_end - code, NULL, NULL);
4979 read_page_trampoline_uwinfo (sp_info, tramp_type, FALSE);
4980 mono_tramp_info_register (sp_info, NULL);
4984 g_error ("Cannot allocate more trampoline pages: %d", ret);
4989 static unsigned char*
4990 get_new_trampoline_from_page (int tramp_type)
4992 g_error ("Page trampolines not supported.");
4999 get_new_specific_trampoline_from_page (gpointer tramp, gpointer arg)
5004 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_SPECIFIC);
5006 data = (gpointer*)((char*)code - MONO_AOT_TRAMP_PAGE_SIZE);
5009 /*g_warning ("new trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
5015 get_new_rgctx_trampoline_from_page (gpointer tramp, gpointer arg)
5020 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_STATIC_RGCTX);
5022 data = (gpointer*)((char*)code - MONO_AOT_TRAMP_PAGE_SIZE);
5025 /*g_warning ("new rgctx trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
5031 get_new_imt_trampoline_from_page (gpointer arg)
5036 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_IMT_THUNK);
5038 data = (gpointer*)((char*)code - MONO_AOT_TRAMP_PAGE_SIZE);
5040 /*g_warning ("new imt trampoline at %p for data %p, (stored at %p)", code, arg, data);*/
5046 get_new_gsharedvt_arg_trampoline_from_page (gpointer tramp, gpointer arg)
5051 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_GSHAREDVT_ARG);
5053 data = (gpointer*)((char*)code - MONO_AOT_TRAMP_PAGE_SIZE);
5056 /*g_warning ("new rgctx trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
5060 /* Return a given kind of trampoline */
5061 /* FIXME set unwind info for these trampolines */
5063 get_numerous_trampoline (MonoAotTrampoline tramp_type, int n_got_slots, MonoAotModule **out_amodule, guint32 *got_offset, guint32 *out_tramp_size)
5066 MonoAotModule *amodule = get_mscorlib_aot_module ();
5067 int index, tramp_size;
5069 /* Currently, we keep all trampolines in the mscorlib AOT image */
5070 image = mono_defaults.corlib;
5072 *out_amodule = amodule;
5077 #define MONOTOUCH_TRAMPOLINES_ERROR ". See http://docs.xamarin.com/ios/troubleshooting for instructions on how to fix this condition."
5079 #define MONOTOUCH_TRAMPOLINES_ERROR ""
5081 if (amodule->trampoline_index [tramp_type] == amodule->info.num_trampolines [tramp_type]) {
5082 g_error ("Ran out of trampolines of type %d in '%s' (%d)%s\n",
5083 tramp_type, image ? image->name : "mscorlib", amodule->info.num_trampolines [tramp_type], MONOTOUCH_TRAMPOLINES_ERROR);
5085 index = amodule->trampoline_index [tramp_type] ++;
5089 *got_offset = amodule->info.trampoline_got_offset_base [tramp_type] + (index * n_got_slots);
5091 tramp_size = amodule->info.trampoline_size [tramp_type];
5094 *out_tramp_size = tramp_size;
5096 return amodule->trampolines [tramp_type] + (index * tramp_size);
5100 no_specific_trampoline (void)
5102 g_assert_not_reached ();
5106 * Return a specific trampoline from the AOT file.
5109 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
5111 MonoAotModule *amodule;
5112 guint32 got_offset, tramp_size;
5113 guint8 *code, *tramp;
5114 static gpointer generic_trampolines [MONO_TRAMPOLINE_NUM];
5115 static gboolean inited;
5116 static guint32 num_trampolines;
5118 if (mono_llvm_only) {
5120 return no_specific_trampoline;
5127 mono_counters_register ("Specific trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &num_trampolines);
5136 if (!generic_trampolines [tramp_type]) {
5139 symbol = mono_get_generic_trampoline_name (tramp_type);
5140 generic_trampolines [tramp_type] = mono_aot_get_trampoline (symbol);
5144 tramp = generic_trampolines [tramp_type];
5147 if (USE_PAGE_TRAMPOLINES) {
5148 code = get_new_specific_trampoline_from_page (tramp, arg1);
5151 code = get_numerous_trampoline (MONO_AOT_TRAMP_SPECIFIC, 2, &amodule, &got_offset, &tramp_size);
5153 amodule->got [got_offset] = tramp;
5154 amodule->got [got_offset + 1] = arg1;
5158 *code_len = tramp_size;
5164 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
5166 MonoAotModule *amodule;
5170 if (USE_PAGE_TRAMPOLINES) {
5171 code = get_new_rgctx_trampoline_from_page (addr, ctx);
5173 code = get_numerous_trampoline (MONO_AOT_TRAMP_STATIC_RGCTX, 2, &amodule, &got_offset, NULL);
5175 amodule->got [got_offset] = ctx;
5176 amodule->got [got_offset + 1] = addr;
5179 /* The caller expects an ftnptr */
5180 return mono_create_ftnptr (mono_domain_get (), code);
5184 mono_aot_get_unbox_trampoline (MonoMethod *method)
5186 guint32 method_index = mono_metadata_token_index (method->token) - 1;
5187 MonoAotModule *amodule;
5189 guint32 *ut, *ut_end, *entry;
5190 int low, high, entry_index = 0;
5191 gpointer symbol_addr;
5192 MonoTrampInfo *tinfo;
5194 if (method->is_inflated && !mono_method_is_generic_sharable_full (method, FALSE, FALSE, FALSE)) {
5195 method_index = find_aot_method (method, &amodule);
5196 if (method_index == 0xffffff && mono_method_is_generic_sharable_full (method, FALSE, TRUE, FALSE)) {
5197 MonoMethod *shared = mini_get_shared_method_full (method, FALSE, FALSE);
5198 method_index = find_aot_method (shared, &amodule);
5200 if (method_index == 0xffffff && mono_method_is_generic_sharable_full (method, FALSE, TRUE, TRUE)) {
5201 MonoMethod *shared = mini_get_shared_method_full (method, TRUE, TRUE);
5202 method_index = find_aot_method (shared, &amodule);
5204 g_assert (method_index != 0xffffff);
5206 amodule = method->klass->image->aot_module;
5210 if (amodule->info.llvm_get_unbox_tramp) {
5211 gpointer (*get_tramp) (int) = amodule->info.llvm_get_unbox_tramp;
5212 code = get_tramp (method_index);
5218 ut = amodule->unbox_trampolines;
5219 ut_end = amodule->unbox_trampolines_end;
5221 /* Do a binary search in the sorted table */
5224 high = (ut_end - ut);
5225 while (low < high) {
5226 entry_index = (low + high) / 2;
5227 entry = &ut [entry_index];
5228 if (entry [0] < method_index) {
5229 low = entry_index + 1;
5230 } else if (entry [0] > method_index) {
5237 code = get_call_table_entry (amodule->unbox_trampoline_addresses, entry_index);
5240 tinfo = mono_tramp_info_create (NULL, code, 0, NULL, NULL);
5242 symbol_addr = read_unwind_info (amodule, tinfo, "unbox_trampoline_p");
5244 mono_tramp_info_free (tinfo);
5248 tinfo->code_size = *(guint32*)symbol_addr;
5249 mono_tramp_info_register (tinfo, NULL);
5251 /* The caller expects an ftnptr */
5252 return mono_create_ftnptr (mono_domain_get (), code);
5256 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
5260 MonoAotModule *amodule = mono_defaults.corlib->aot_module;
5261 guint32 index = MONO_RGCTX_SLOT_INDEX (slot);
5262 static int count = 0;
5265 if (index >= amodule->info.num_rgctx_fetch_trampolines) {
5266 static gpointer addr;
5270 * Use the general version of the rgctx fetch trampoline. It receives a pair of <slot, trampoline> in the rgctx arg reg.
5273 addr = load_function (amodule, "rgctx_fetch_trampoline_general");
5274 info = mono_domain_alloc0 (mono_get_root_domain (), sizeof (gpointer) * 2);
5275 info [0] = GUINT_TO_POINTER (slot);
5276 info [1] = mono_create_specific_trampoline (GUINT_TO_POINTER (slot), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, mono_get_root_domain (), NULL);
5277 code = mono_aot_get_static_rgctx_trampoline (info, addr);
5278 return mono_create_ftnptr (mono_domain_get (), code);
5281 symbol = mono_get_rgctx_fetch_trampoline_name (slot);
5282 code = load_function (mono_defaults.corlib->aot_module, symbol);
5284 /* The caller expects an ftnptr */
5285 return mono_create_ftnptr (mono_domain_get (), code);
5291 g_assert_not_reached ();
5295 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
5300 int i, index, real_count;
5301 MonoAotModule *amodule;
5304 return no_imt_thunk;
5307 for (i = 0; i < count; ++i) {
5308 MonoIMTCheckItem *item = imt_entries [i];
5310 if (item->is_equals)
5314 /* Save the entries into an array */
5315 buf = mono_domain_alloc (domain, (real_count + 1) * 2 * sizeof (gpointer));
5317 for (i = 0; i < count; ++i) {
5318 MonoIMTCheckItem *item = imt_entries [i];
5320 if (!item->is_equals)
5323 g_assert (item->key);
5325 buf [(index * 2)] = item->key;
5326 if (item->has_target_code) {
5327 gpointer *p = mono_domain_alloc (domain, sizeof (gpointer));
5328 *p = item->value.target_code;
5329 buf [(index * 2) + 1] = p;
5331 buf [(index * 2) + 1] = &(vtable->vtable [item->value.vtable_slot]);
5335 buf [(index * 2)] = NULL;
5336 buf [(index * 2) + 1] = fail_tramp;
5338 if (USE_PAGE_TRAMPOLINES) {
5339 code = get_new_imt_trampoline_from_page (buf);
5341 code = get_numerous_trampoline (MONO_AOT_TRAMP_IMT_THUNK, 1, &amodule, &got_offset, NULL);
5343 amodule->got [got_offset] = buf;
5350 mono_aot_get_gsharedvt_arg_trampoline (gpointer arg, gpointer addr)
5352 MonoAotModule *amodule;
5356 if (USE_PAGE_TRAMPOLINES) {
5357 code = get_new_gsharedvt_arg_trampoline_from_page (addr, arg);
5359 code = get_numerous_trampoline (MONO_AOT_TRAMP_GSHAREDVT_ARG, 2, &amodule, &got_offset, NULL);
5361 amodule->got [got_offset] = arg;
5362 amodule->got [got_offset + 1] = addr;
5365 /* The caller expects an ftnptr */
5366 return mono_create_ftnptr (mono_domain_get (), code);
5370 * mono_aot_set_make_unreadable:
5372 * Set whenever to make all mmaped memory unreadable. In conjuction with a
5373 * SIGSEGV handler, this is useful to find out which pages the runtime tries to read.
5376 mono_aot_set_make_unreadable (gboolean unreadable)
5380 make_unreadable = unreadable;
5382 if (make_unreadable && !inited) {
5383 mono_counters_register ("AOT: pagefaults", MONO_COUNTER_JIT | MONO_COUNTER_INT, &n_pagefaults);
5388 MonoAotModule *module;
5393 find_map (gpointer key, gpointer value, gpointer user_data)
5395 MonoAotModule *module = (MonoAotModule*)value;
5396 FindMapUserData *data = (FindMapUserData*)user_data;
5399 if ((data->ptr >= module->mem_begin) && (data->ptr < module->mem_end))
5400 data->module = module;
5403 static MonoAotModule*
5404 find_module_for_addr (void *ptr)
5406 FindMapUserData data;
5408 if (!make_unreadable)
5412 data.ptr = (guint8*)ptr;
5415 g_hash_table_foreach (aot_modules, (GHFunc)find_map, &data);
5422 * mono_aot_is_pagefault:
5424 * Should be called from a SIGSEGV signal handler to find out whenever @ptr is
5425 * within memory allocated by this module.
5428 mono_aot_is_pagefault (void *ptr)
5430 if (!make_unreadable)
5434 * Not signal safe, but SIGSEGV's are synchronous, and
5435 * this is only turned on by a MONO_DEBUG option.
5437 return find_module_for_addr (ptr) != NULL;
5441 * mono_aot_handle_pagefault:
5443 * Handle a pagefault caused by an unreadable page by making it readable again.
5446 mono_aot_handle_pagefault (void *ptr)
5448 #ifndef PLATFORM_WIN32
5449 guint8* start = (guint8*)ROUND_DOWN (((gssize)ptr), mono_pagesize ());
5453 res = mono_mprotect (start, mono_pagesize (), MONO_MMAP_READ|MONO_MMAP_WRITE|MONO_MMAP_EXEC);
5454 g_assert (res == 0);
5465 mono_aot_init (void)
5470 mono_aot_cleanup (void)
5475 mono_aot_find_method_index (MonoMethod *method)
5477 g_assert_not_reached ();
5482 mono_aot_init_llvm_method (gpointer aot_module, guint32 method_index)
5487 mono_aot_init_gshared_method_this (gpointer aot_module, guint32 method_index, MonoObject *this)
5492 mono_aot_init_gshared_method_rgctx (gpointer aot_module, guint32 method_index, MonoMethodRuntimeGenericContext *rgctx)
5497 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
5503 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
5509 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
5515 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
5521 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
5527 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
5533 mono_aot_get_plt_entry (guint8 *code)
5539 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
5545 mono_aot_patch_plt_entry (guint8 *code, guint8 *plt_entry, gpointer *got, mgreg_t *regs, guint8 *addr)
5550 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
5556 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
5558 g_assert_not_reached ();
5564 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
5566 g_assert_not_reached ();
5571 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
5573 g_assert_not_reached ();
5578 mono_aot_get_trampoline_full (const char *name, MonoTrampInfo **out_tinfo)
5580 g_assert_not_reached ();
5585 mono_aot_get_trampoline (const char *name)
5587 g_assert_not_reached ();
5592 mono_aot_get_unbox_trampoline (MonoMethod *method)
5594 g_assert_not_reached ();
5599 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
5601 g_assert_not_reached ();
5606 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
5608 g_assert_not_reached ();
5613 mono_aot_get_gsharedvt_arg_trampoline (gpointer arg, gpointer addr)
5615 g_assert_not_reached ();
5620 mono_aot_set_make_unreadable (gboolean unreadable)
5625 mono_aot_is_pagefault (void *ptr)
5631 mono_aot_handle_pagefault (void *ptr)
5636 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
5638 g_assert_not_reached ();
5643 mono_aot_register_jit_icall (const char *name, gpointer addr)