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 4
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 */
87 gpointer shared_got [N_COMMON_GOT_ENTRIES];
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;
103 guint8 *jit_code_start;
104 guint8 *jit_code_end;
105 guint8 *llvm_code_start;
106 guint8 *llvm_code_end;
110 /* Maps method indexes to their code */
112 /* Sorted array of method addresses */
113 gpointer *sorted_methods;
114 /* Method indexes for each method in sorted_methods */
115 int *sorted_method_indexes;
116 /* The length of the two tables above */
117 int sorted_methods_len;
118 guint32 *method_info_offsets;
119 guint32 *ex_info_offsets;
120 guint32 *class_info_offsets;
121 guint32 *methods_loaded;
122 guint16 *class_name_table;
123 guint32 *extra_method_table;
124 guint32 *extra_method_info_offsets;
125 guint32 *unbox_trampolines;
126 guint32 *unbox_trampolines_end;
127 guint32 *unbox_trampoline_addresses;
130 /* Points to the mono EH data created by LLVM */
131 guint8 *mono_eh_frame;
133 /* Points to the trampolines */
134 guint8 *trampolines [MONO_AOT_TRAMP_NUM];
135 /* The first unused trampoline of each kind */
136 guint32 trampoline_index [MONO_AOT_TRAMP_NUM];
138 gboolean use_page_trampolines;
140 MonoAotFileInfo info;
145 JitInfoMap *async_jit_info_table;
151 unsigned char *trampolines;
152 unsigned char *trampolines_end;
155 static GHashTable *aot_modules;
156 #define mono_aot_lock() mono_mutex_lock (&aot_mutex)
157 #define mono_aot_unlock() mono_mutex_unlock (&aot_mutex)
158 static mono_mutex_t aot_mutex;
161 * Maps assembly names to the mono_aot_module_<NAME>_info symbols in the
162 * AOT modules registered by mono_aot_register_module ().
164 static GHashTable *static_aot_modules;
167 * Maps MonoJitInfo* to the aot module they belong to, this can be different
168 * from ji->method->klass->image's aot module for generic instances.
170 static GHashTable *ji_to_amodule;
173 * Whenever to AOT compile loaded assemblies on demand and store them in
176 static gboolean enable_aot_cache = FALSE;
178 static gboolean mscorlib_aot_loaded;
181 static gint32 mono_last_aot_method = -1;
183 static gboolean make_unreadable = FALSE;
184 static guint32 name_table_accesses = 0;
185 static guint32 n_pagefaults = 0;
187 /* Used to speed-up find_aot_module () */
188 static gsize aot_code_low_addr = (gssize)-1;
189 static gsize aot_code_high_addr = 0;
192 static gint32 async_jit_info_size;
194 static GHashTable *aot_jit_icall_hash;
197 #define USE_PAGE_TRAMPOLINES ((MonoAotModule*)mono_defaults.corlib->aot_module)->use_page_trampolines
199 #define USE_PAGE_TRAMPOLINES 0
202 #define mono_aot_page_lock() mono_mutex_lock (&aot_page_mutex)
203 #define mono_aot_page_unlock() mono_mutex_unlock (&aot_page_mutex)
204 static mono_mutex_t aot_page_mutex;
206 static MonoAotModule *mscorlib_aot_module;
209 init_plt (MonoAotModule *info);
212 compute_llvm_code_range (MonoAotModule *amodule, guint8 **code_start, guint8 **code_end);
215 init_method (MonoAotModule *amodule, guint32 method_index, MonoMethod *method, MonoClass **klass);
217 /*****************************************************/
219 /*****************************************************/
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;
482 gboolean is_method = decode_value (p, &p);
485 MonoMethod *method_def;
486 g_assert (type == MONO_TYPE_MVAR);
487 method_def = decode_resolve_method_ref (module, p, &p);
491 container = mono_method_get_generic_container (method_def);
493 MonoClass *class_def;
494 g_assert (type == MONO_TYPE_VAR);
495 class_def = decode_klass_ref (module, p, &p);
499 container = class_def->generic_container;
502 gboolean has_gshared_constraint = decode_value (p, &p);
503 if (has_gshared_constraint) {
506 gshared_constraint = decode_type (module, p, &p);
507 if (!gshared_constraint)
510 len = decode_value (p, &p);
512 par_name = mono_image_alloc (module->assembly->image, len + 1);
513 memcpy (par_name, p, len);
515 par_name [len] = '\0';
520 t = g_new0 (MonoType, 1);
523 t->data.generic_param = mono_generic_container_get_param (container, num);
524 g_assert (gshared_constraint == NULL);
527 MonoGenericParam *par = (MonoGenericParam*)mono_image_alloc0 (module->assembly->image, sizeof (MonoGenericParamFull));
529 par->gshared_constraint = gshared_constraint;
531 par->image = mono_defaults.corlib;
532 t->data.generic_param = par;
534 ((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);
544 case MONO_AOT_TYPEREF_ARRAY:
546 rank = decode_value (p, &p);
547 eklass = decode_klass_ref (module, p, &p);
548 klass = mono_array_class_get (eklass, rank);
550 case MONO_AOT_TYPEREF_PTR: {
553 t = decode_type (module, p, &p);
556 klass = mono_class_from_mono_type (t);
560 case MONO_AOT_TYPEREF_BLOB_INDEX: {
561 guint32 offset = decode_value (p, &p);
564 p2 = module->blob + offset;
565 klass = decode_klass_ref (module, p2, &p2);
569 g_assert_not_reached ();
572 //printf ("BLA: %s\n", mono_type_full_name (&klass->byval_arg));
577 static MonoClassField*
578 decode_field_info (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
580 MonoClass *klass = decode_klass_ref (module, buf, &buf);
587 token = MONO_TOKEN_FIELD_DEF + decode_value (p, &p);
591 return mono_class_get_field (klass, token);
595 * Parse a MonoType encoded by encode_type () in aot-compiler.c. Return malloc-ed
599 decode_type (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
604 t = g_malloc0 (sizeof (MonoType));
607 if (*p == MONO_TYPE_PINNED) {
610 } else if (*p == MONO_TYPE_BYREF) {
623 case MONO_TYPE_BOOLEAN:
637 case MONO_TYPE_STRING:
638 case MONO_TYPE_OBJECT:
639 case MONO_TYPE_TYPEDBYREF:
641 case MONO_TYPE_VALUETYPE:
642 case MONO_TYPE_CLASS:
643 t->data.klass = decode_klass_ref (module, p, &p);
645 case MONO_TYPE_SZARRAY:
646 t->data.klass = decode_klass_ref (module, p, &p);
652 t->data.type = decode_type (module, p, &p);
654 case MONO_TYPE_GENERICINST: {
656 MonoGenericContext ctx;
660 gclass = decode_klass_ref (module, p, &p);
663 g_assert (gclass->generic_container);
665 memset (&ctx, 0, sizeof (ctx));
666 ctx.class_inst = decode_generic_inst (module, p, &p);
669 type = mono_class_inflate_generic_type (&gclass->byval_arg, &ctx);
670 klass = mono_class_from_mono_type (type);
671 t->data.generic_class = klass->generic_class;
674 case MONO_TYPE_ARRAY: {
675 MonoArrayType *array;
678 // FIXME: memory management
679 array = g_new0 (MonoArrayType, 1);
680 array->eklass = decode_klass_ref (module, p, &p);
683 array->rank = decode_value (p, &p);
684 array->numsizes = decode_value (p, &p);
687 array->sizes = g_malloc0 (sizeof (int) * array->numsizes);
688 for (i = 0; i < array->numsizes; ++i)
689 array->sizes [i] = decode_value (p, &p);
691 array->numlobounds = decode_value (p, &p);
692 if (array->numlobounds)
693 array->lobounds = g_malloc0 (sizeof (int) * array->numlobounds);
694 for (i = 0; i < array->numlobounds; ++i)
695 array->lobounds [i] = decode_value (p, &p);
696 t->data.array = array;
700 case MONO_TYPE_MVAR: {
701 MonoClass *klass = decode_klass_ref (module, p, &p);
704 t->data.generic_param = klass->byval_arg.data.generic_param;
708 g_assert_not_reached ();
716 // FIXME: Error handling, memory management
718 static MonoMethodSignature*
719 decode_signature_with_target (MonoAotModule *module, MonoMethodSignature *target, guint8 *buf, guint8 **endbuf)
721 MonoMethodSignature *sig;
723 int i, param_count, call_conv;
725 gboolean hasthis, explicit_this, has_gen_params;
729 has_gen_params = (flags & 0x10) != 0;
730 hasthis = (flags & 0x20) != 0;
731 explicit_this = (flags & 0x40) != 0;
732 call_conv = flags & 0x0F;
735 /* gen_param_count = */ decode_value (p, &p);
736 param_count = decode_value (p, &p);
737 if (target && param_count != target->param_count)
739 sig = g_malloc0 (MONO_SIZEOF_METHOD_SIGNATURE + param_count * sizeof (MonoType *));
740 sig->param_count = param_count;
741 sig->sentinelpos = -1;
742 sig->hasthis = hasthis;
743 sig->explicit_this = explicit_this;
744 sig->call_convention = call_conv;
745 sig->param_count = param_count;
746 sig->ret = decode_type (module, p, &p);
747 for (i = 0; i < param_count; ++i) {
748 if (*p == MONO_TYPE_SENTINEL) {
749 g_assert (sig->call_convention == MONO_CALL_VARARG);
750 sig->sentinelpos = i;
753 sig->params [i] = decode_type (module, p, &p);
756 if (sig->call_convention == MONO_CALL_VARARG && sig->sentinelpos == -1)
757 sig->sentinelpos = sig->param_count;
764 static MonoMethodSignature*
765 decode_signature (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
767 return decode_signature_with_target (module, NULL, buf, endbuf);
771 sig_matches_target (MonoAotModule *module, MonoMethod *target, guint8 *buf, guint8 **endbuf)
773 MonoMethodSignature *sig;
777 sig = decode_signature_with_target (module, mono_method_signature (target), p, &p);
778 res = sig && mono_metadata_signature_equal (mono_method_signature (target), sig);
784 /* Stores information returned by decode_method_ref () */
789 gboolean no_aot_trampoline;
793 * decode_method_ref_with_target:
795 * Decode a method reference, storing the image/token into a MethodRef structure.
796 * This avoids loading metadata for the method if the caller does not need it. If the method has
797 * no token, then it is loaded from metadata and ref->method is set to the method instance.
798 * If TARGET is non-NULL, abort decoding if it can be determined that the decoded method
799 * couldn't resolve to TARGET, and return FALSE.
800 * There are some kinds of method references which only support a non-null TARGET.
801 * This means that its not possible to decode this into a method, only to check
802 * that the method reference matches a given method. This is normally not a problem
803 * as these wrappers only occur in the extra_methods table, where we already have
804 * a method we want to lookup.
807 decode_method_ref_with_target (MonoAotModule *module, MethodRef *ref, MonoMethod *target, guint8 *buf, guint8 **endbuf)
809 guint32 image_index, value;
810 MonoImage *image = NULL;
813 memset (ref, 0, sizeof (MethodRef));
815 value = decode_value (p, &p);
816 image_index = value >> 24;
818 if (image_index == MONO_AOT_METHODREF_NO_AOT_TRAMPOLINE) {
819 ref->no_aot_trampoline = TRUE;
820 value = decode_value (p, &p);
821 image_index = value >> 24;
824 if (image_index < MONO_AOT_METHODREF_MIN || image_index == MONO_AOT_METHODREF_METHODSPEC || image_index == MONO_AOT_METHODREF_GINST) {
825 if (target && target->wrapper_type)
829 if (image_index == MONO_AOT_METHODREF_WRAPPER) {
830 guint32 wrapper_type;
832 wrapper_type = decode_value (p, &p);
834 if (target && target->wrapper_type != wrapper_type)
838 image = mono_defaults.corlib;
840 switch (wrapper_type) {
841 #ifndef DISABLE_REMOTING
842 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK: {
843 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
847 mono_class_init (m->klass);
851 ref->method = mono_marshal_get_remoting_invoke_with_check (m);
854 case MONO_WRAPPER_PROXY_ISINST: {
855 MonoClass *klass = decode_klass_ref (module, p, &p);
858 ref->method = mono_marshal_get_proxy_cancast (klass);
861 case MONO_WRAPPER_LDFLD:
862 case MONO_WRAPPER_LDFLDA:
863 case MONO_WRAPPER_STFLD:
864 case MONO_WRAPPER_ISINST: {
865 MonoClass *klass = decode_klass_ref (module, p, &p);
868 if (wrapper_type == MONO_WRAPPER_LDFLD)
869 ref->method = mono_marshal_get_ldfld_wrapper (&klass->byval_arg);
870 else if (wrapper_type == MONO_WRAPPER_LDFLDA)
871 ref->method = mono_marshal_get_ldflda_wrapper (&klass->byval_arg);
872 else if (wrapper_type == MONO_WRAPPER_STFLD)
873 ref->method = mono_marshal_get_stfld_wrapper (&klass->byval_arg);
874 else if (wrapper_type == MONO_WRAPPER_ISINST)
875 ref->method = mono_marshal_get_isinst (klass);
877 g_assert_not_reached ();
880 case MONO_WRAPPER_LDFLD_REMOTE:
881 ref->method = mono_marshal_get_ldfld_remote_wrapper (NULL);
883 case MONO_WRAPPER_STFLD_REMOTE:
884 ref->method = mono_marshal_get_stfld_remote_wrapper (NULL);
887 case MONO_WRAPPER_ALLOC: {
888 int atype = decode_value (p, &p);
890 ref->method = mono_gc_get_managed_allocator_by_type (atype, !!(mono_profiler_get_events () & MONO_PROFILE_ALLOCATIONS));
892 g_error ("Error: No managed allocator, but we need one for AOT.\nAre you using non-standard GC options?\n");
895 case MONO_WRAPPER_WRITE_BARRIER:
896 ref->method = mono_gc_get_write_barrier ();
898 case MONO_WRAPPER_STELEMREF: {
899 int subtype = decode_value (p, &p);
901 if (subtype == WRAPPER_SUBTYPE_NONE) {
902 ref->method = mono_marshal_get_stelemref ();
903 } else if (subtype == WRAPPER_SUBTYPE_VIRTUAL_STELEMREF) {
907 kind = decode_value (p, &p);
909 /* Can't decode this */
912 if (target->wrapper_type == MONO_WRAPPER_STELEMREF) {
913 info = mono_marshal_get_wrapper_info (target);
916 if (info->subtype == subtype && info->d.virtual_stelemref.kind == kind)
917 ref->method = target;
924 g_assert_not_reached ();
928 case MONO_WRAPPER_SYNCHRONIZED: {
929 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
933 ref->method = mono_marshal_get_synchronized_wrapper (m);
936 case MONO_WRAPPER_UNKNOWN: {
937 int subtype = decode_value (p, &p);
939 if (subtype == WRAPPER_SUBTYPE_PTR_TO_STRUCTURE || subtype == WRAPPER_SUBTYPE_STRUCTURE_TO_PTR) {
940 MonoClass *klass = decode_klass_ref (module, p, &p);
947 if (klass != target->klass)
950 if (subtype == WRAPPER_SUBTYPE_PTR_TO_STRUCTURE) {
951 if (strcmp (target->name, "PtrToStructure"))
953 ref->method = mono_marshal_get_ptr_to_struct (klass);
955 if (strcmp (target->name, "StructureToPtr"))
957 ref->method = mono_marshal_get_struct_to_ptr (klass);
959 } else if (subtype == WRAPPER_SUBTYPE_SYNCHRONIZED_INNER) {
960 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
964 ref->method = mono_marshal_get_synchronized_inner_wrapper (m);
965 } else if (subtype == WRAPPER_SUBTYPE_ARRAY_ACCESSOR) {
966 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
970 ref->method = mono_marshal_get_array_accessor_wrapper (m);
971 } else if (subtype == WRAPPER_SUBTYPE_GSHAREDVT_IN) {
972 ref->method = mono_marshal_get_gsharedvt_in_wrapper ();
973 } else if (subtype == WRAPPER_SUBTYPE_GSHAREDVT_OUT) {
974 ref->method = mono_marshal_get_gsharedvt_out_wrapper ();
976 g_assert_not_reached ();
980 case MONO_WRAPPER_MANAGED_TO_MANAGED: {
981 int subtype = decode_value (p, &p);
983 if (subtype == WRAPPER_SUBTYPE_ELEMENT_ADDR) {
984 int rank = decode_value (p, &p);
985 int elem_size = decode_value (p, &p);
987 ref->method = mono_marshal_get_array_address (rank, elem_size);
988 } else if (subtype == WRAPPER_SUBTYPE_STRING_CTOR) {
992 m = decode_resolve_method_ref (module, p, &p);
998 g_assert (target->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED);
1000 info = mono_marshal_get_wrapper_info (target);
1001 if (info && info->subtype == subtype && info->d.string_ctor.method == m)
1002 ref->method = target;
1008 case MONO_WRAPPER_MANAGED_TO_NATIVE: {
1010 int subtype = decode_value (p, &p);
1013 if (subtype == WRAPPER_SUBTYPE_ICALL_WRAPPER) {
1018 if (strcmp (target->name, name) != 0)
1020 ref->method = target;
1022 m = decode_resolve_method_ref (module, p, &p);
1027 /* This should only happen when looking for an extra method */
1030 if (mono_marshal_method_from_wrapper (target) == m)
1031 ref->method = target;
1037 case MONO_WRAPPER_CASTCLASS: {
1038 int subtype = decode_value (p, &p);
1040 if (subtype == WRAPPER_SUBTYPE_CASTCLASS_WITH_CACHE)
1041 ref->method = mono_marshal_get_castclass_with_cache ();
1042 else if (subtype == WRAPPER_SUBTYPE_ISINST_WITH_CACHE)
1043 ref->method = mono_marshal_get_isinst_with_cache ();
1045 g_assert_not_reached ();
1048 case MONO_WRAPPER_RUNTIME_INVOKE: {
1049 int subtype = decode_value (p, &p);
1054 if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_DYNAMIC) {
1055 if (strcmp (target->name, "runtime_invoke_dynamic") != 0)
1057 ref->method = target;
1058 } else if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_DIRECT) {
1059 /* Direct wrapper */
1060 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
1064 ref->method = mono_marshal_get_runtime_invoke (m, FALSE);
1065 } else if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_VIRTUAL) {
1066 /* Virtual direct wrapper */
1067 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
1071 ref->method = mono_marshal_get_runtime_invoke (m, TRUE);
1073 MonoMethodSignature *sig;
1076 sig = decode_signature_with_target (module, NULL, p, &p);
1077 info = mono_marshal_get_wrapper_info (target);
1080 if (info->subtype != subtype)
1082 g_assert (info->d.runtime_invoke.sig);
1083 if (mono_metadata_signature_equal (sig, info->d.runtime_invoke.sig))
1084 ref->method = target;
1090 case MONO_WRAPPER_DELEGATE_INVOKE:
1091 case MONO_WRAPPER_DELEGATE_BEGIN_INVOKE:
1092 case MONO_WRAPPER_DELEGATE_END_INVOKE: {
1093 gboolean is_inflated = decode_value (p, &p);
1094 WrapperSubtype subtype;
1098 MonoMethod *invoke, *wrapper;
1100 klass = decode_klass_ref (module, p, &p);
1104 switch (wrapper_type) {
1105 case MONO_WRAPPER_DELEGATE_INVOKE:
1106 invoke = mono_get_delegate_invoke (klass);
1107 wrapper = mono_marshal_get_delegate_invoke (invoke, NULL);
1109 case MONO_WRAPPER_DELEGATE_BEGIN_INVOKE:
1110 invoke = mono_get_delegate_begin_invoke (klass);
1111 wrapper = mono_marshal_get_delegate_begin_invoke (invoke);
1113 case MONO_WRAPPER_DELEGATE_END_INVOKE:
1114 invoke = mono_get_delegate_end_invoke (klass);
1115 wrapper = mono_marshal_get_delegate_end_invoke (invoke);
1118 g_assert_not_reached ();
1121 if (target && wrapper != target)
1123 ref->method = wrapper;
1126 * These wrappers are associated with a signature, not with a method.
1127 * Since we can't decode them into methods, they need a target method.
1132 if (wrapper_type == MONO_WRAPPER_DELEGATE_INVOKE) {
1135 subtype = decode_value (p, &p);
1136 info = mono_marshal_get_wrapper_info (target);
1138 if (info->subtype != subtype)
1141 if (subtype != WRAPPER_SUBTYPE_NONE)
1145 if (sig_matches_target (module, target, p, &p))
1146 ref->method = target;
1152 case MONO_WRAPPER_NATIVE_TO_MANAGED: {
1156 m = decode_resolve_method_ref (module, p, &p);
1159 klass = decode_klass_ref (module, p, &p);
1162 ref->method = mono_marshal_get_managed_wrapper (m, klass, 0);
1166 g_assert_not_reached ();
1168 } else if (image_index == MONO_AOT_METHODREF_METHODSPEC) {
1169 image_index = decode_value (p, &p);
1170 ref->token = decode_value (p, &p);
1172 image = load_image (module, image_index, TRUE);
1175 } else if (image_index == MONO_AOT_METHODREF_GINST) {
1178 MonoGenericContext ctx;
1181 * These methods do not have a token which resolves them, so we
1182 * resolve them immediately.
1184 klass = decode_klass_ref (module, p, &p);
1188 if (target && target->klass != klass)
1191 image_index = decode_value (p, &p);
1192 ref->token = decode_value (p, &p);
1194 image = load_image (module, image_index, TRUE);
1198 ref->method = mono_get_method_full (image, ref->token, NULL, NULL);
1202 memset (&ctx, 0, sizeof (ctx));
1204 if (FALSE && klass->generic_class) {
1205 ctx.class_inst = klass->generic_class->context.class_inst;
1206 ctx.method_inst = NULL;
1208 ref->method = mono_class_inflate_generic_method_full_checked (ref->method, klass, &ctx, &error);
1209 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
1212 memset (&ctx, 0, sizeof (ctx));
1214 if (!decode_generic_context (module, &ctx, p, &p))
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 */
1219 } else if (image_index == MONO_AOT_METHODREF_ARRAY) {
1223 klass = decode_klass_ref (module, p, &p);
1226 method_type = decode_value (p, &p);
1227 switch (method_type) {
1229 ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank);
1232 ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank * 2);
1235 ref->method = mono_class_get_method_from_name (klass, "Get", -1);
1238 ref->method = mono_class_get_method_from_name (klass, "Address", -1);
1241 ref->method = mono_class_get_method_from_name (klass, "Set", -1);
1244 g_assert_not_reached ();
1247 if (image_index == MONO_AOT_METHODREF_LARGE_IMAGE_INDEX) {
1248 image_index = decode_value (p, &p);
1249 value = decode_value (p, &p);
1252 ref->token = MONO_TOKEN_METHOD_DEF | (value & 0xffffff);
1254 image = load_image (module, image_index, TRUE);
1267 decode_method_ref (MonoAotModule *module, MethodRef *ref, guint8 *buf, guint8 **endbuf)
1269 return decode_method_ref_with_target (module, ref, NULL, buf, endbuf);
1273 * decode_resolve_method_ref_with_target:
1275 * Similar to decode_method_ref, but resolve and return the method itself.
1278 decode_resolve_method_ref_with_target (MonoAotModule *module, MonoMethod *target, guint8 *buf, guint8 **endbuf)
1283 res = decode_method_ref_with_target (module, &ref, target, buf, endbuf);
1290 return mono_get_method (ref.image, ref.token, NULL);
1294 decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
1296 return decode_resolve_method_ref_with_target (module, NULL, buf, endbuf);
1299 #ifdef ENABLE_AOT_CACHE
1305 * - Add options for controlling the cache size
1306 * - Handle full cache by deleting old assemblies lru style
1307 * - Maybe add a threshold after an assembly is AOT compiled
1308 * - Add options for enabling this for specific main assemblies
1311 /* The cache directory */
1312 static char *cache_dir;
1314 /* The number of assemblies AOTed in this run */
1315 static int cache_count;
1317 /* Whenever to AOT in-process */
1318 static gboolean in_process;
1321 collect_assemblies (gpointer data, gpointer user_data)
1323 MonoAssembly *ass = data;
1324 GSList **l = user_data;
1326 *l = g_slist_prepend (*l, ass);
1329 #define SHA1_DIGEST_LENGTH 20
1332 * get_aot_config_hash:
1334 * Return a hash for all the version information an AOT module depends on.
1336 static G_GNUC_UNUSED char*
1337 get_aot_config_hash (MonoAssembly *assembly)
1340 GSList *l, *assembly_list = NULL;
1343 guint8 digest [SHA1_DIGEST_LENGTH];
1346 build_info = mono_get_runtime_build_info ();
1348 s = g_string_new (build_info);
1350 mono_assembly_foreach (collect_assemblies, &assembly_list);
1353 * The assembly list includes the current assembly as well, no need
1356 for (l = assembly_list; l; l = l->next) {
1357 MonoAssembly *ass = l->data;
1359 g_string_append (s, "_");
1360 g_string_append (s, ass->aname.name);
1361 g_string_append (s, "_");
1362 g_string_append (s, ass->image->guid);
1365 for (i = 0; i < s->len; ++i) {
1366 if (!isalnum (s->str [i]) && s->str [i] != '-')
1370 mono_sha1_get_digest ((guint8*)s->str, s->len, digest);
1372 digest_str = g_malloc0 ((SHA1_DIGEST_LENGTH * 2) + 1);
1373 for (i = 0; i < SHA1_DIGEST_LENGTH; ++i)
1374 sprintf (digest_str + (i * 2), "%02x", digest [i]);
1376 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: file dependencies: %s, hash %s", s->str, digest_str);
1378 g_string_free (s, TRUE);
1384 aot_cache_init (void)
1388 enable_aot_cache = TRUE;
1393 * aot_cache_load_module:
1395 * Load the AOT image corresponding to ASSEMBLY from the aot cache, AOTing it if neccessary.
1398 aot_cache_load_module (MonoAssembly *assembly, char **aot_name)
1400 MonoAotCacheConfig *config;
1402 char *fname, *tmp2, *aot_options, *failure_fname;
1414 if (image_is_dynamic (assembly->image))
1417 /* Check in the list of assemblies enabled for aot caching */
1418 config = mono_get_aot_cache_config ();
1422 MonoDomain *domain = mono_domain_get ();
1423 MonoAssembly *entry_assembly = domain->entry_assembly;
1425 // FIXME: This cannot be used for mscorlib during startup, since entry_assembly is not set yet
1426 for (l = config->apps; l; l = l->next) {
1429 if ((entry_assembly && !strcmp (entry_assembly->aname.name, n)) || (!entry_assembly && !strcmp (assembly->aname.name, n)))
1437 for (l = config->assemblies; l; l = l->next) {
1440 if (!strcmp (assembly->aname.name, n))
1450 home = g_get_home_dir ();
1453 cache_dir = g_strdup_printf ("%s/Library/Caches/mono/aot-cache", home);
1454 if (!g_file_test (cache_dir, G_FILE_TEST_EXISTS|G_FILE_TEST_IS_DIR))
1455 g_mkdir_with_parents (cache_dir, 0777);
1459 * The same assembly can be used in multiple configurations, i.e. multiple
1460 * versions of the runtime, with multiple versions of dependent assemblies etc.
1461 * To handle this, we compute a version string containing all this information, hash it,
1462 * and use the hash as a filename suffix.
1464 hash = get_aot_config_hash (assembly);
1466 tmp2 = g_strdup_printf ("%s-%s%s", assembly->image->assembly_name, hash, MONO_SOLIB_EXT);
1467 fname = g_build_filename (cache_dir, tmp2, NULL);
1471 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: loading from cache: '%s'.", fname);
1472 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
1475 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: found in cache: '%s'.", fname);
1479 if (!strcmp (assembly->aname.name, "mscorlib") && !mscorlib_aot_loaded)
1481 * Can't AOT this during startup, so we AOT it when called later from
1482 * mono_aot_get_method ().
1486 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: not found.");
1488 /* Only AOT one assembly per run to avoid slowing down execution too much */
1489 if (cache_count > 0)
1493 /* Check for previous failure */
1494 failure_fname = g_strdup_printf ("%s.failure", fname);
1495 failure_file = fopen (failure_fname, "r");
1497 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: assembly '%s' previously failed to compile '%s' ('%s')... ", assembly->image->name, fname, failure_fname);
1498 g_free (failure_fname);
1501 g_free (failure_fname);
1502 fclose (failure_file);
1505 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: compiling assembly '%s', logfile: '%s.log'... ", assembly->image->name, fname);
1508 * We need to invoke the AOT compiler here. There are multiple approaches:
1509 * - spawn a new runtime process. This can be hard when running with mkbundle, and
1510 * its hard to make the new process load the same set of assemblies.
1511 * - doing it in-process. This exposes the current process to bugs/leaks/side effects of
1513 * - fork a new process and do the work there.
1516 aot_options = g_strdup_printf ("outfile=%s,internal-logfile=%s.log%s%s", fname, fname, config->aot_options ? "," : "", config->aot_options ? config->aot_options : "");
1517 /* Maybe due this in another thread ? */
1518 res = mono_compile_assembly (assembly, mono_parse_default_optimizations (NULL), aot_options);
1520 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: compilation failed.");
1521 failure_fname = g_strdup_printf ("%s.failure", fname);
1522 failure_file = fopen (failure_fname, "a+");
1523 fclose (failure_file);
1524 g_free (failure_fname);
1526 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: compilation succeeded.");
1530 * - Avoid waiting for the aot process to finish ?
1531 * (less overhead, but multiple processes could aot the same assembly at the same time)
1540 logfile_name = g_strdup_printf ("%s/aot.log", cache_dir);
1541 logfile = fopen (logfile_name, "a+");
1542 g_free (logfile_name);
1544 dup2 (fileno (logfile), 1);
1545 dup2 (fileno (logfile), 2);
1547 aot_options = g_strdup_printf ("outfile=%s", fname);
1548 res = mono_compile_assembly (assembly, mono_parse_default_optimizations (NULL), aot_options);
1556 waitpid (pid, &exit_status, 0);
1557 if (!WIFEXITED (exit_status) && (WEXITSTATUS (exit_status) == 0))
1558 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: failed.");
1560 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: succeeded.");
1564 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
1572 aot_cache_init (void)
1577 aot_cache_load_module (MonoAssembly *assembly, char **aot_name)
1585 find_symbol (MonoDl *module, gpointer *globals, const char *name, gpointer *value)
1589 guint16 *table, *entry;
1592 char *symbol = (char*)name;
1595 symbol = g_strdup_printf ("_%s", name);
1598 /* The first entry points to the hash */
1599 table = globals [0];
1602 table_size = table [0];
1605 hash = mono_metadata_str_hash (symbol) % table_size;
1607 entry = &table [hash * 2];
1609 /* Search the hash for the index into the globals table */
1611 while (entry [0] != 0) {
1612 guint32 index = entry [0] - 1;
1613 guint32 next = entry [1];
1615 //printf ("X: %s %s\n", (char*)globals [index * 2], name);
1617 if (!strcmp (globals [index * 2], symbol)) {
1618 global_index = index;
1623 entry = &table [next * 2];
1629 if (global_index != -1)
1630 *value = globals [global_index * 2 + 1];
1637 char *err = mono_dl_symbol (module, name, value);
1645 check_usable (MonoAssembly *assembly, MonoAotFileInfo *info, char **out_msg)
1649 gboolean usable = TRUE;
1652 guint32 excluded_cpu_optimizations;
1654 if (strcmp (assembly->image->guid, info->assembly_guid)) {
1655 msg = g_strdup_printf ("doesn't match assembly");
1659 build_info = mono_get_runtime_build_info ();
1660 if (strlen (info->runtime_version) > 0 && strcmp (info->runtime_version, build_info)) {
1661 msg = g_strdup_printf ("compiled against runtime version '%s' while this runtime has version '%s'", info->runtime_version, build_info);
1664 g_free (build_info);
1666 full_aot = info->flags & MONO_AOT_FILE_FLAG_FULL_AOT;
1668 if (mono_aot_only && !full_aot) {
1669 msg = g_strdup_printf ("not compiled with --aot=full");
1672 if (!mono_aot_only && full_aot) {
1673 msg = g_strdup_printf ("compiled with --aot=full");
1677 /* mono_arch_find_imt_method () requires this */
1678 if ((info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM) && !mono_use_llvm) {
1679 msg = g_strdup_printf ("compiled against LLVM");
1682 if (!(info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM) && mono_use_llvm) {
1683 msg = g_strdup_printf ("not compiled against LLVM");
1687 if (mini_get_debug_options ()->mdb_optimizations && !(info->flags & MONO_AOT_FILE_FLAG_DEBUG) && !full_aot) {
1688 msg = g_strdup_printf ("not compiled for debugging");
1692 mono_arch_cpu_optimizations (&excluded_cpu_optimizations);
1693 if (info->opts & excluded_cpu_optimizations) {
1694 msg = g_strdup_printf ("compiled with unsupported CPU optimizations");
1698 if (!mono_aot_only && (info->simd_opts & ~mono_arch_cpu_enumerate_simd_versions ())) {
1699 msg = g_strdup_printf ("compiled with unsupported SIMD extensions");
1705 if (info->gc_name_index != -1) {
1706 char *gc_name = (char*)&blob [info->gc_name_index];
1707 const char *current_gc_name = mono_gc_get_gc_name ();
1709 if (strcmp (current_gc_name, gc_name) != 0) {
1710 msg = g_strdup_printf ("compiled against GC %s, while the current runtime uses GC %s.\n", gc_name, current_gc_name);
1720 * TABLE should point to a table of call instructions. Return the address called by the INDEXth entry.
1723 get_call_table_entry (void *table, int index)
1725 #if defined(TARGET_ARM)
1730 ins_addr = (guint32*)table + index;
1732 if ((ins >> ARMCOND_SHIFT) == ARMCOND_NV) {
1734 offset = (((int)(((ins & 0xffffff) << 1) | ((ins >> 24) & 0x1))) << 7) >> 7;
1735 return (char*)ins_addr + (offset * 2) + 8 + 1;
1737 offset = (((int)ins & 0xffffff) << 8) >> 8;
1738 return (char*)ins_addr + (offset * 4) + 8;
1740 #elif defined(TARGET_ARM64)
1741 return mono_arch_get_call_target ((guint8*)table + (index * 4) + 4);
1742 #elif defined(TARGET_X86) || defined(TARGET_AMD64)
1743 /* The callee expects an ip which points after the call */
1744 return mono_arch_get_call_target ((guint8*)table + (index * 5) + 5);
1746 g_assert_not_reached ();
1752 init_gots (MonoAotModule *amodule)
1757 for (i = 0; i < N_COMMON_GOT_ENTRIES; ++i)
1758 amodule->got [i] = amodule->shared_got [i];
1760 if (amodule->llvm_got) {
1761 for (i = 0; i < N_COMMON_GOT_ENTRIES; ++i)
1762 amodule->llvm_got [i] = amodule->shared_got [i];
1767 load_aot_module (MonoAssembly *assembly, gpointer user_data)
1770 MonoAotModule *amodule;
1772 gboolean usable = TRUE;
1773 char *version_symbol = NULL;
1775 gpointer *globals = NULL;
1776 MonoAotFileInfo *info = NULL;
1779 gboolean do_load_image = TRUE;
1780 int align_double, align_int64;
1782 if (mono_compile_aot)
1785 if (assembly->image->aot_module)
1787 * Already loaded. This can happen because the assembly loading code might invoke
1788 * the assembly load hooks multiple times for the same assembly.
1792 if (image_is_dynamic (assembly->image) || assembly->ref_only)
1796 if (static_aot_modules)
1797 info = g_hash_table_lookup (static_aot_modules, assembly->aname.name);
1805 /* Statically linked AOT module */
1806 aot_name = g_strdup_printf ("%s", assembly->aname.name);
1807 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "Found statically linked AOT module '%s'.\n", aot_name);
1808 globals = info->globals;
1810 if (enable_aot_cache)
1811 sofile = aot_cache_load_module (assembly, &aot_name);
1814 aot_name = g_strdup_printf ("%s%s", assembly->image->name, MONO_SOLIB_EXT);
1816 sofile = mono_dl_open (aot_name, MONO_DL_LAZY, &err);
1819 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module '%s' not found: %s\n", aot_name, err);
1822 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);
1823 sofile = mono_dl_open (aot_name, MONO_DL_LAZY, &err);
1825 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module '%s' not found: %s\n", aot_name, err);
1833 if (!sofile && !globals) {
1834 if (mono_aot_only && assembly->image->tables [MONO_TABLE_METHOD].rows)
1835 g_error ("Failed to load AOT module '%s' in aot-only mode.\n", aot_name);
1841 find_symbol (sofile, globals, "mono_aot_version", (gpointer *) &version_symbol);
1842 find_symbol (sofile, globals, "mono_aot_file_info", (gpointer*)&info);
1845 if (version_symbol) {
1846 /* Old file format */
1847 version = atoi (version_symbol);
1850 version = info->version;
1853 if (version != MONO_AOT_FILE_VERSION) {
1854 msg = g_strdup_printf ("wrong file format version (expected %d got %d)", MONO_AOT_FILE_VERSION, version);
1857 usable = check_usable (assembly, info, &msg);
1861 if (mono_aot_only) {
1862 g_error ("Failed to load AOT module '%s' while running in aot-only mode: %s.\n", aot_name, msg);
1864 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: module %s is unusable: %s.\n", aot_name, msg);
1869 mono_dl_close (sofile);
1870 assembly->image->aot_module = NULL;
1875 align_double = MONO_ABI_ALIGNOF (double);
1876 align_int64 = MONO_ABI_ALIGNOF (gint64);
1877 g_assert (info->double_align == align_double);
1878 g_assert (info->long_align == align_int64);
1879 g_assert (info->generic_tramp_num == MONO_TRAMPOLINE_NUM);
1883 amodule = g_new0 (MonoAotModule, 1);
1884 amodule->aot_name = aot_name;
1885 amodule->assembly = assembly;
1887 memcpy (&amodule->info, info, sizeof (*info));
1889 amodule->got = amodule->info.jit_got;
1890 amodule->llvm_got = amodule->info.llvm_got;
1891 amodule->globals = globals;
1892 amodule->sofile = sofile;
1893 amodule->method_to_code = g_hash_table_new (mono_aligned_addr_hash, NULL);
1894 amodule->blob = blob;
1896 mono_mutex_init_recursive (&amodule->mutex);
1898 /* Read image table */
1900 guint32 table_len, i;
1903 table = info->image_table;
1906 table_len = *(guint32*)table;
1907 table += sizeof (guint32);
1908 amodule->image_table = g_new0 (MonoImage*, table_len);
1909 amodule->image_names = g_new0 (MonoAssemblyName, table_len);
1910 amodule->image_guids = g_new0 (char*, table_len);
1911 amodule->image_table_len = table_len;
1912 for (i = 0; i < table_len; ++i) {
1913 MonoAssemblyName *aname = &(amodule->image_names [i]);
1915 aname->name = g_strdup (table);
1916 table += strlen (table) + 1;
1917 amodule->image_guids [i] = g_strdup (table);
1918 table += strlen (table) + 1;
1920 aname->culture = g_strdup (table);
1921 table += strlen (table) + 1;
1922 memcpy (aname->public_key_token, table, strlen (table) + 1);
1923 table += strlen (table) + 1;
1925 table = ALIGN_PTR_TO (table, 8);
1926 aname->flags = *(guint32*)table;
1928 aname->major = *(guint32*)table;
1930 aname->minor = *(guint32*)table;
1932 aname->build = *(guint32*)table;
1934 aname->revision = *(guint32*)table;
1939 amodule->jit_code_start = info->jit_code_start;
1940 amodule->jit_code_end = info->jit_code_end;
1941 amodule->method_info_offsets = info->method_info_offsets;
1942 amodule->ex_info_offsets = info->ex_info_offsets;
1943 amodule->class_info_offsets = info->class_info_offsets;
1944 amodule->class_name_table = info->class_name_table;
1945 amodule->extra_method_table = info->extra_method_table;
1946 amodule->extra_method_info_offsets = info->extra_method_info_offsets;
1947 amodule->unbox_trampolines = info->unbox_trampolines;
1948 amodule->unbox_trampolines_end = info->unbox_trampolines_end;
1949 amodule->unbox_trampoline_addresses = info->unbox_trampoline_addresses;
1950 amodule->unwind_info = info->unwind_info;
1951 amodule->mem_begin = amodule->jit_code_start;
1952 amodule->mem_end = info->mem_end;
1953 amodule->plt = info->plt;
1954 amodule->plt_end = info->plt_end;
1955 amodule->mono_eh_frame = info->mono_eh_frame;
1956 amodule->trampolines [MONO_AOT_TRAMP_SPECIFIC] = info->specific_trampolines;
1957 amodule->trampolines [MONO_AOT_TRAMP_STATIC_RGCTX] = info->static_rgctx_trampolines;
1958 amodule->trampolines [MONO_AOT_TRAMP_IMT_THUNK] = info->imt_thunks;
1959 amodule->trampolines [MONO_AOT_TRAMP_GSHAREDVT_ARG] = info->gsharedvt_arg_trampolines;
1961 if (!strcmp (assembly->aname.name, "mscorlib"))
1962 mscorlib_aot_module = amodule;
1964 /* Compute method addresses */
1965 amodule->methods = g_malloc0 (amodule->info.nmethods * sizeof (gpointer));
1966 for (i = 0; i < amodule->info.nmethods; ++i) {
1969 /* method_addresses () contains a table of branches, since the ios linker can update those correctly */
1970 if (!addr && amodule->info.method_addresses) {
1971 addr = get_call_table_entry (amodule->info.method_addresses, i);
1973 if (addr == amodule->info.method_addresses)
1977 amodule->methods [i] = GINT_TO_POINTER (-1);
1979 amodule->methods [i] = addr;
1982 if (make_unreadable) {
1983 #ifndef TARGET_WIN32
1985 guint8 *page_start, *page_end;
1988 addr = amodule->mem_begin;
1990 len = amodule->mem_end - amodule->mem_begin;
1992 /* Round down in both directions to avoid modifying data which is not ours */
1993 page_start = (guint8 *) (((gssize) (addr)) & ~ (mono_pagesize () - 1)) + mono_pagesize ();
1994 page_end = (guint8 *) (((gssize) (addr + len)) & ~ (mono_pagesize () - 1));
1995 if (page_end > page_start) {
1996 err = mono_mprotect (page_start, (page_end - page_start), MONO_MMAP_NONE);
1997 g_assert (err == 0);
2002 /* Compute the boundaries of LLVM code */
2003 if (info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM)
2004 compute_llvm_code_range (amodule, &amodule->llvm_code_start, &amodule->llvm_code_end);
2008 if (amodule->jit_code_start) {
2009 aot_code_low_addr = MIN (aot_code_low_addr, (gsize)amodule->jit_code_start);
2010 aot_code_high_addr = MAX (aot_code_high_addr, (gsize)amodule->jit_code_end);
2012 if (amodule->llvm_code_start) {
2013 aot_code_low_addr = MIN (aot_code_low_addr, (gsize)amodule->llvm_code_start);
2014 aot_code_high_addr = MAX (aot_code_high_addr, (gsize)amodule->llvm_code_end);
2017 g_hash_table_insert (aot_modules, assembly, amodule);
2020 if (amodule->jit_code_start)
2021 mono_jit_info_add_aot_module (assembly->image, amodule->jit_code_start, amodule->jit_code_end);
2022 if (amodule->llvm_code_start)
2023 mono_jit_info_add_aot_module (assembly->image, amodule->llvm_code_start, amodule->llvm_code_end);
2025 assembly->image->aot_module = amodule;
2027 amodule->shared_got [0] = assembly->image;
2029 if (mono_aot_only) {
2031 find_symbol (amodule->sofile, amodule->globals, "specific_trampolines_page", (gpointer *)&code);
2032 amodule->use_page_trampolines = code != NULL;
2033 /*g_warning ("using page trampolines: %d", amodule->use_page_trampolines);*/
2034 if (mono_defaults.corlib) {
2035 /* The second got slot contains the mscorlib got addr */
2036 MonoAotModule *mscorlib_amodule = mono_defaults.corlib->aot_module;
2038 amodule->shared_got [1] = mscorlib_amodule->got;
2040 amodule->shared_got [1] = amodule->got;
2044 if (mono_gc_is_moving ()) {
2047 memset (&ji, 0, sizeof (ji));
2048 ji.type = MONO_PATCH_INFO_GC_CARD_TABLE_ADDR;
2049 amodule->shared_got [2] = mono_resolve_patch_target (NULL, mono_get_root_domain (), NULL, &ji, FALSE);
2051 memset (&ji, 0, sizeof (ji));
2052 ji.type = MONO_PATCH_INFO_GC_NURSERY_START;
2053 amodule->shared_got [3] = mono_resolve_patch_target (NULL, mono_get_root_domain (), NULL, &ji, FALSE);
2056 init_gots (amodule);
2059 * Register the plt region as a single trampoline so we can unwind from this code
2061 mono_tramp_info_register (
2062 mono_tramp_info_create (
2065 amodule->plt_end - amodule->plt,
2067 mono_unwind_get_cie_program ()
2073 * Since we store methoddef and classdef tokens when referring to methods/classes in
2074 * referenced assemblies, we depend on the exact versions of the referenced assemblies.
2075 * MS calls this 'hard binding'. This means we have to load all referenced assemblies
2076 * non-lazily, since we can't handle out-of-date errors later.
2077 * The cached class info also depends on the exact assemblies.
2079 #if defined(__native_client__)
2080 /* TODO: Don't 'load_image' on mscorlib due to a */
2081 /* recursive loading problem. This should be */
2082 /* removed if mscorlib is loaded from disk. */
2083 if (strncmp(assembly->aname.name, "mscorlib", 8)) {
2084 do_load_image = TRUE;
2086 do_load_image = FALSE;
2089 if (do_load_image) {
2090 for (i = 0; i < amodule->image_table_len; ++i)
2091 load_image (amodule, i, FALSE);
2094 if (amodule->out_of_date) {
2095 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);
2097 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);
2100 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: loaded AOT Module for %s.\n", assembly->image->name);
2104 * mono_aot_register_globals:
2106 * This is called by the ctor function in AOT images compiled with the
2107 * 'no-dlsym' option.
2110 mono_aot_register_globals (gpointer *globals)
2112 g_assert_not_reached ();
2116 * mono_aot_register_module:
2118 * This should be called by embedding code to register AOT modules statically linked
2119 * into the executable. AOT_INFO should be the value of the
2120 * 'mono_aot_module_<ASSEMBLY_NAME>_info' global symbol from the AOT module.
2123 mono_aot_register_module (gpointer *aot_info)
2127 MonoAotFileInfo *info = (gpointer)aot_info;
2129 g_assert (info->version == MONO_AOT_FILE_VERSION);
2131 globals = info->globals;
2134 aname = info->assembly_name;
2136 /* This could be called before startup */
2140 if (!static_aot_modules)
2141 static_aot_modules = g_hash_table_new (g_str_hash, g_str_equal);
2143 g_hash_table_insert (static_aot_modules, aname, info);
2150 mono_aot_init (void)
2152 mono_mutex_init_recursive (&aot_mutex);
2153 mono_mutex_init_recursive (&aot_page_mutex);
2154 aot_modules = g_hash_table_new (NULL, NULL);
2156 #ifndef __native_client__
2157 mono_install_assembly_load_hook (load_aot_module, NULL);
2159 mono_counters_register ("Async JIT info size", MONO_COUNTER_INT|MONO_COUNTER_JIT, &async_jit_info_size);
2161 if (g_getenv ("MONO_LASTAOT"))
2162 mono_last_aot_method = atoi (g_getenv ("MONO_LASTAOT"));
2167 mono_aot_cleanup (void)
2169 if (aot_jit_icall_hash)
2170 g_hash_table_destroy (aot_jit_icall_hash);
2172 g_hash_table_destroy (aot_modules);
2176 decode_cached_class_info (MonoAotModule *module, MonoCachedClassInfo *info, guint8 *buf, guint8 **endbuf)
2182 info->vtable_size = decode_value (buf, &buf);
2183 if (info->vtable_size == -1)
2186 flags = decode_value (buf, &buf);
2187 info->ghcimpl = (flags >> 0) & 0x1;
2188 info->has_finalize = (flags >> 1) & 0x1;
2189 info->has_cctor = (flags >> 2) & 0x1;
2190 info->has_nested_classes = (flags >> 3) & 0x1;
2191 info->blittable = (flags >> 4) & 0x1;
2192 info->has_references = (flags >> 5) & 0x1;
2193 info->has_static_refs = (flags >> 6) & 0x1;
2194 info->no_special_static_fields = (flags >> 7) & 0x1;
2195 info->is_generic_container = (flags >> 8) & 0x1;
2197 if (info->has_cctor) {
2198 res = decode_method_ref (module, &ref, buf, &buf);
2201 info->cctor_token = ref.token;
2203 if (info->has_finalize) {
2204 res = decode_method_ref (module, &ref, buf, &buf);
2207 info->finalize_image = ref.image;
2208 info->finalize_token = ref.token;
2211 info->instance_size = decode_value (buf, &buf);
2212 info->class_size = decode_value (buf, &buf);
2213 info->packing_size = decode_value (buf, &buf);
2214 info->min_align = decode_value (buf, &buf);
2222 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
2225 MonoClass *klass = vtable->klass;
2226 MonoAotModule *amodule = klass->image->aot_module;
2228 MonoCachedClassInfo class_info;
2233 if (MONO_CLASS_IS_INTERFACE (klass) || klass->rank || !amodule)
2236 info = &amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
2239 err = decode_cached_class_info (amodule, &class_info, p, &p);
2243 for (i = 0; i < slot; ++i)
2244 decode_method_ref (amodule, &ref, p, &p);
2246 res = decode_method_ref (amodule, &ref, p, &p);
2249 if (ref.no_aot_trampoline)
2252 if (mono_metadata_token_index (ref.token) == 0 || mono_metadata_token_table (ref.token) != MONO_TABLE_METHOD)
2255 return mono_aot_get_method_from_token (domain, ref.image, ref.token);
2259 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
2261 MonoAotModule *amodule = klass->image->aot_module;
2265 if (klass->rank || !amodule)
2268 p = (guint8*)&amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
2270 err = decode_cached_class_info (amodule, res, p, &p);
2278 * mono_aot_get_class_from_name:
2280 * Obtains a MonoClass with a given namespace and a given name which is located in IMAGE,
2281 * using a cache stored in the AOT file.
2282 * Stores the resulting class in *KLASS if found, stores NULL otherwise.
2284 * Returns: TRUE if the klass was found/not found in the cache, FALSE if no aot file was
2288 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
2290 MonoAotModule *amodule = image->aot_module;
2291 guint16 *table, *entry;
2294 char full_name_buf [1024];
2296 const char *name2, *name_space2;
2298 guint32 cols [MONO_TYPEDEF_SIZE];
2299 GHashTable *nspace_table;
2301 if (!amodule || !amodule->class_name_table)
2304 amodule_lock (amodule);
2308 /* First look in the cache */
2309 if (!amodule->name_cache)
2310 amodule->name_cache = g_hash_table_new (g_str_hash, g_str_equal);
2311 nspace_table = g_hash_table_lookup (amodule->name_cache, name_space);
2313 *klass = g_hash_table_lookup (nspace_table, name);
2315 amodule_unlock (amodule);
2320 table_size = amodule->class_name_table [0];
2321 table = amodule->class_name_table + 1;
2323 if (name_space [0] == '\0')
2324 full_name = g_strdup_printf ("%s", name);
2326 if (strlen (name_space) + strlen (name) < 1000) {
2327 sprintf (full_name_buf, "%s.%s", name_space, name);
2328 full_name = full_name_buf;
2330 full_name = g_strdup_printf ("%s.%s", name_space, name);
2333 hash = mono_metadata_str_hash (full_name) % table_size;
2334 if (full_name != full_name_buf)
2337 entry = &table [hash * 2];
2339 if (entry [0] != 0) {
2340 t = &image->tables [MONO_TABLE_TYPEDEF];
2343 guint32 index = entry [0];
2344 guint32 next = entry [1];
2345 guint32 token = mono_metadata_make_token (MONO_TABLE_TYPEDEF, index);
2347 name_table_accesses ++;
2349 mono_metadata_decode_row (t, index - 1, cols, MONO_TYPEDEF_SIZE);
2351 name2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
2352 name_space2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
2354 if (!strcmp (name, name2) && !strcmp (name_space, name_space2)) {
2356 amodule_unlock (amodule);
2357 *klass = mono_class_get_checked (image, token, &error);
2358 if (!mono_error_ok (&error))
2359 mono_error_cleanup (&error); /* FIXME don't swallow the error */
2363 amodule_lock (amodule);
2364 nspace_table = g_hash_table_lookup (amodule->name_cache, name_space);
2365 if (!nspace_table) {
2366 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
2367 g_hash_table_insert (amodule->name_cache, (char*)name_space2, nspace_table);
2369 g_hash_table_insert (nspace_table, (char*)name2, *klass);
2370 amodule_unlock (amodule);
2376 entry = &table [next * 2];
2383 amodule_unlock (amodule);
2388 /* Compute the boundaries of the LLVM code for AMODULE. */
2390 compute_llvm_code_range (MonoAotModule *amodule, guint8 **code_start, guint8 **code_end)
2393 int version, fde_count;
2396 g_assert (amodule->mono_eh_frame);
2398 p = amodule->mono_eh_frame;
2400 /* p points to data emitted by LLVM in DwarfException::EmitMonoEHFrame () */
2404 g_assert (version == 3);
2407 p = ALIGN_PTR_TO (p, 4);
2409 fde_count = *(guint32*)p;
2413 if (fde_count > 0) {
2414 *code_start = amodule->methods [table [0]];
2415 *code_end = (guint8*)amodule->methods [table [(fde_count - 1) * 2]] + table [fde_count * 2];
2423 is_llvm_code (MonoAotModule *amodule, guint8 *code)
2425 if ((guint8*)code >= amodule->llvm_code_start && (guint8*)code < amodule->llvm_code_end)
2432 is_thumb_code (MonoAotModule *amodule, guint8 *code)
2434 if (is_llvm_code (amodule, code) && (amodule->info.flags & MONO_AOT_FILE_FLAG_LLVM_THUMB))
2441 * decode_llvm_mono_eh_frame:
2443 * Decode the EH information emitted by our modified LLVM compiler and construct a
2444 * MonoJitInfo structure from it.
2445 * LOCKING: Acquires the domain lock.
2448 decode_llvm_mono_eh_frame (MonoAotModule *amodule, MonoDomain *domain,
2449 MonoMethod *method, guint8 *code,
2450 MonoJitExceptionInfo *clauses, int num_clauses,
2451 MonoJitInfoFlags flags,
2453 int *this_reg, int *this_offset)
2455 guint8 *p, *code1, *code2;
2456 guint8 *fde, *cie, *code_start, *code_end;
2457 int version, fde_count;
2459 int i, pos, left, right, code_len;
2460 MonoJitExceptionInfo *ei;
2461 guint32 fde_len, ei_len, nested_len, nindex;
2462 gpointer *type_info;
2464 MonoLLVMFDEInfo info;
2466 g_assert (amodule->mono_eh_frame);
2468 p = amodule->mono_eh_frame;
2470 /* p points to data emitted by LLVM in DwarfMonoException::EmitMonoEHFrame () */
2474 g_assert (version == 3);
2476 /* func_encoding = *p; */
2478 p = ALIGN_PTR_TO (p, 4);
2480 fde_count = *(guint32*)p;
2484 /* There is +1 entry in the table */
2485 cie = p + ((fde_count + 1) * 8);
2487 /* Binary search in the table to find the entry for code */
2491 pos = (left + right) / 2;
2493 /* The table contains method index/fde offset pairs */
2494 g_assert (table [(pos * 2)] != -1);
2495 code1 = amodule->methods [table [(pos * 2)]];
2496 if (pos + 1 == fde_count) {
2497 code2 = amodule->llvm_code_end;
2499 g_assert (table [(pos + 1) * 2] != -1);
2500 code2 = amodule->methods [table [(pos + 1) * 2]];
2505 else if (code >= code2)
2511 code_start = amodule->methods [table [(pos * 2)]];
2512 if (pos + 1 == fde_count) {
2513 /* The +1 entry in the table contains the length of the last method */
2514 int len = table [(pos + 1) * 2];
2515 code_end = code_start + len;
2517 code_end = amodule->methods [table [(pos + 1) * 2]];
2519 code_len = code_end - code_start;
2521 g_assert (code >= code_start && code < code_end);
2523 if (is_thumb_code (amodule, code_start))
2524 /* Clear thumb flag */
2525 code_start = (guint8*)(((mgreg_t)code_start) & ~1);
2527 fde = amodule->mono_eh_frame + table [(pos * 2) + 1];
2528 /* This won't overflow because there is +1 entry in the table */
2529 fde_len = table [(pos * 2) + 2 + 1] - table [(pos * 2) + 1];
2531 mono_unwind_decode_llvm_mono_fde (fde, fde_len, cie, code_start, &info);
2533 ei_len = info.ex_info_len;
2534 type_info = info.type_info;
2535 *this_reg = info.this_reg;
2536 *this_offset = info.this_offset;
2538 /* Count number of nested clauses */
2540 for (i = 0; i < ei_len; ++i) {
2541 /* This might be unaligned */
2542 gint32 cindex1 = read32 (type_info [i]);
2545 for (l = nesting [cindex1]; l; l = l->next)
2550 * LLVM might represent one IL region with multiple regions, so have to
2551 * allocate a new JI.
2554 mono_domain_alloc0_lock_free (domain, mono_jit_info_size (flags, ei_len + nested_len, 0));
2555 mono_jit_info_init (jinfo, method, code, code_len, flags, ei_len + nested_len, 0);
2557 jinfo->unwind_info = mono_cache_unwind_info (info.unw_info, info.unw_info_len);
2558 /* This signals that unwind_info points to a normal cached unwind info */
2559 jinfo->from_aot = 0;
2560 jinfo->from_llvm = 1;
2562 for (i = 0; i < ei_len; ++i) {
2564 * clauses contains the original IL exception info saved by the AOT
2565 * compiler, we have to combine that with the information produced by LLVM
2567 /* The type_info entries contain IL clause indexes */
2568 int clause_index = read32 (type_info [i]);
2569 MonoJitExceptionInfo *jei = &jinfo->clauses [i];
2570 MonoJitExceptionInfo *orig_jei = &clauses [clause_index];
2572 g_assert (clause_index < num_clauses);
2573 jei->flags = orig_jei->flags;
2574 jei->data.catch_class = orig_jei->data.catch_class;
2576 jei->try_start = ei [i].try_start;
2577 jei->try_end = ei [i].try_end;
2578 jei->handler_start = ei [i].handler_start;
2579 jei->clause_index = clause_index;
2581 if (is_thumb_code (amodule, jei->try_start)) {
2582 jei->try_start = (void*)((mgreg_t)jei->try_start & ~1);
2583 jei->try_end = (void*)((mgreg_t)jei->try_end & ~1);
2584 /* Make sure we transition to thumb when a handler starts */
2585 jei->handler_start = (void*)((mgreg_t)jei->handler_start + 1);
2589 /* See exception_cb () in mini-llvm.c as to why this is needed */
2591 for (i = 0; i < ei_len; ++i) {
2592 gint32 cindex1 = read32 (type_info [i]);
2595 for (l = nesting [cindex1]; l; l = l->next) {
2596 gint32 nesting_cindex = GPOINTER_TO_INT (l->data);
2597 MonoJitExceptionInfo *nesting_ei;
2598 MonoJitExceptionInfo *nesting_clause = &clauses [nesting_cindex];
2600 nesting_ei = &jinfo->clauses [nindex];
2603 memcpy (nesting_ei, &jinfo->clauses [i], sizeof (MonoJitExceptionInfo));
2604 nesting_ei->flags = nesting_clause->flags;
2605 nesting_ei->data.catch_class = nesting_clause->data.catch_class;
2606 nesting_ei->clause_index = nesting_cindex;
2609 g_assert (nindex == ei_len + nested_len);
2615 alloc0_jit_info_data (MonoDomain *domain, int size, gboolean async_context)
2619 if (async_context) {
2620 res = mono_domain_alloc0_lock_free (domain, size);
2621 InterlockedExchangeAdd (&async_jit_info_size, size);
2623 res = mono_domain_alloc0 (domain, size);
2629 * LOCKING: Acquires the domain lock.
2630 * In async context, this is async safe.
2633 decode_exception_debug_info (MonoAotModule *amodule, MonoDomain *domain,
2634 MonoMethod *method, guint8* ex_info, guint8 *addr,
2635 guint8 *code, guint32 code_len)
2637 int i, buf_len, num_clauses, len;
2639 MonoJitInfoFlags flags = JIT_INFO_NONE;
2640 guint unwind_info, eflags;
2641 gboolean has_generic_jit_info, has_dwarf_unwind_info, has_clauses, has_seq_points, has_try_block_holes, has_arch_eh_jit_info;
2642 gboolean from_llvm, has_gc_map;
2644 int try_holes_info_size, num_holes;
2645 int this_reg = 0, this_offset = 0;
2648 /* Load the method info from the AOT file */
2649 async = mono_thread_info_is_async_context ();
2652 eflags = decode_value (p, &p);
2653 has_generic_jit_info = (eflags & 1) != 0;
2654 has_dwarf_unwind_info = (eflags & 2) != 0;
2655 has_clauses = (eflags & 4) != 0;
2656 has_seq_points = (eflags & 8) != 0;
2657 from_llvm = (eflags & 16) != 0;
2658 has_try_block_holes = (eflags & 32) != 0;
2659 has_gc_map = (eflags & 64) != 0;
2660 has_arch_eh_jit_info = (eflags & 128) != 0;
2662 if (has_dwarf_unwind_info) {
2663 unwind_info = decode_value (p, &p);
2664 g_assert (unwind_info < (1 << 30));
2666 unwind_info = decode_value (p, &p);
2668 if (has_generic_jit_info)
2669 flags |= JIT_INFO_HAS_GENERIC_JIT_INFO;
2671 if (has_try_block_holes) {
2672 num_holes = decode_value (p, &p);
2673 flags |= JIT_INFO_HAS_TRY_BLOCK_HOLES;
2674 try_holes_info_size = sizeof (MonoTryBlockHoleTableJitInfo) + num_holes * sizeof (MonoTryBlockHoleJitInfo);
2676 num_holes = try_holes_info_size = 0;
2679 if (has_arch_eh_jit_info) {
2680 flags |= JIT_INFO_HAS_ARCH_EH_INFO;
2681 /* Overwrite the original code_len which includes alignment padding */
2682 code_len = decode_value (p, &p);
2685 /* Exception table */
2687 num_clauses = decode_value (p, &p);
2692 MonoJitExceptionInfo *clauses;
2699 * Part of the info is encoded by the AOT compiler, the rest is in the .eh_frame
2702 clauses = g_new0 (MonoJitExceptionInfo, num_clauses);
2703 nesting = g_new0 (GSList*, num_clauses);
2705 for (i = 0; i < num_clauses; ++i) {
2706 MonoJitExceptionInfo *ei = &clauses [i];
2708 ei->flags = decode_value (p, &p);
2710 if (decode_value (p, &p))
2711 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
2713 /* Read the list of nesting clauses */
2715 int nesting_index = decode_value (p, &p);
2716 if (nesting_index == -1)
2718 nesting [i] = g_slist_prepend (nesting [i], GINT_TO_POINTER (nesting_index));
2722 jinfo = decode_llvm_mono_eh_frame (amodule, domain, method, code, clauses, num_clauses, flags, nesting, &this_reg, &this_offset);
2725 for (i = 0; i < num_clauses; ++i)
2726 g_slist_free (nesting [i]);
2729 len = mono_jit_info_size (flags, num_clauses, num_holes);
2730 jinfo = alloc0_jit_info_data (domain, len, async);
2731 mono_jit_info_init (jinfo, method, code, code_len, flags, num_clauses, num_holes);
2733 for (i = 0; i < jinfo->num_clauses; ++i) {
2734 MonoJitExceptionInfo *ei = &jinfo->clauses [i];
2736 ei->flags = decode_value (p, &p);
2738 #ifdef MONO_CONTEXT_SET_LLVM_EXC_REG
2739 /* Not used for catch clauses */
2740 if (ei->flags != MONO_EXCEPTION_CLAUSE_NONE)
2741 ei->exvar_offset = decode_value (p, &p);
2743 ei->exvar_offset = decode_value (p, &p);
2746 if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER || ei->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
2747 ei->data.filter = code + decode_value (p, &p);
2749 int len = decode_value (p, &p);
2755 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
2759 ei->try_start = code + decode_value (p, &p);
2760 ei->try_end = code + decode_value (p, &p);
2761 ei->handler_start = code + decode_value (p, &p);
2764 jinfo->unwind_info = unwind_info;
2765 jinfo->domain_neutral = 0;
2766 jinfo->from_aot = 1;
2769 if (has_try_block_holes) {
2770 MonoTryBlockHoleTableJitInfo *table;
2772 g_assert (jinfo->has_try_block_holes);
2774 table = mono_jit_info_get_try_block_hole_table_info (jinfo);
2777 table->num_holes = (guint16)num_holes;
2778 for (i = 0; i < num_holes; ++i) {
2779 MonoTryBlockHoleJitInfo *hole = &table->holes [i];
2780 hole->clause = decode_value (p, &p);
2781 hole->length = decode_value (p, &p);
2782 hole->offset = decode_value (p, &p);
2786 if (has_arch_eh_jit_info) {
2787 MonoArchEHJitInfo *eh_info;
2789 g_assert (jinfo->has_arch_eh_info);
2791 eh_info = mono_jit_info_get_arch_eh_info (jinfo);
2792 eh_info->stack_size = decode_value (p, &p);
2793 eh_info->epilog_size = decode_value (p, &p);
2797 /* The rest is not needed in async mode */
2798 jinfo->async = TRUE;
2799 jinfo->d.aot_info = amodule;
2804 if (has_generic_jit_info) {
2805 MonoGenericJitInfo *gi;
2808 g_assert (jinfo->has_generic_jit_info);
2810 gi = mono_jit_info_get_generic_jit_info (jinfo);
2813 gi->nlocs = decode_value (p, &p);
2815 gi->locations = alloc0_jit_info_data (domain, gi->nlocs * sizeof (MonoDwarfLocListEntry), async);
2816 for (i = 0; i < gi->nlocs; ++i) {
2817 MonoDwarfLocListEntry *entry = &gi->locations [i];
2819 entry->is_reg = decode_value (p, &p);
2820 entry->reg = decode_value (p, &p);
2822 entry->offset = decode_value (p, &p);
2824 entry->from = decode_value (p, &p);
2825 entry->to = decode_value (p, &p);
2830 gi->has_this = this_reg != -1;
2831 gi->this_reg = this_reg;
2832 gi->this_offset = this_offset;
2834 gi->has_this = decode_value (p, &p);
2835 gi->this_reg = decode_value (p, &p);
2836 gi->this_offset = decode_value (p, &p);
2840 len = decode_value (p, &p);
2844 jinfo->d.method = decode_resolve_method_ref (amodule, p, &p);
2846 gi->generic_sharing_context = g_new0 (MonoGenericSharingContext, 1);
2847 if (decode_value (p, &p)) {
2849 MonoGenericSharingContext *gsctx = gi->generic_sharing_context;
2851 gsctx->is_gsharedvt = TRUE;
2855 if (method && has_seq_points) {
2856 MonoSeqPointInfo *seq_points;
2858 p += mono_seq_point_info_read (&seq_points, p, FALSE);
2860 mono_domain_lock (domain);
2861 g_hash_table_insert (domain_jit_info (domain)->seq_points, method, seq_points);
2862 mono_domain_unlock (domain);
2865 /* Load debug info */
2866 buf_len = decode_value (p, &p);
2868 mono_debug_add_aot_method (domain, method, code, p, buf_len);
2872 int map_size = decode_value (p, &p);
2873 /* The GC map requires 4 bytes of alignment */
2874 while ((guint64)(gsize)p % 4)
2880 if (amodule != jinfo->d.method->klass->image->aot_module) {
2883 ji_to_amodule = g_hash_table_new (NULL, NULL);
2884 g_hash_table_insert (ji_to_amodule, jinfo, amodule);
2892 amodule_contains_code_addr (MonoAotModule *amodule, guint8 *code)
2894 return (code >= amodule->jit_code_start && code <= amodule->jit_code_end) ||
2895 (code >= amodule->llvm_code_start && code <= amodule->llvm_code_end);
2899 * mono_aot_get_unwind_info:
2901 * Return a pointer to the DWARF unwind info belonging to JI.
2904 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
2906 MonoAotModule *amodule;
2908 guint8 *code = ji->code_start;
2911 amodule = ji->d.aot_info;
2913 amodule = jinfo_get_method (ji)->klass->image->aot_module;
2915 g_assert (ji->from_aot);
2917 if (!amodule_contains_code_addr (amodule, code)) {
2918 /* ji belongs to a different aot module than amodule */
2920 g_assert (ji_to_amodule);
2921 amodule = g_hash_table_lookup (ji_to_amodule, ji);
2923 g_assert (amodule_contains_code_addr (amodule, code));
2927 p = amodule->unwind_info + ji->unwind_info;
2928 *unwind_info_len = decode_value (p, &p);
2933 msort_method_addresses_internal (gpointer *array, int *indexes, int lo, int hi, gpointer *scratch, int *scratch_indexes)
2935 int mid = (lo + hi) / 2;
2942 for (i = lo; i < hi; ++i)
2943 if (array [i] > array [i + 1])
2946 /* Already sorted */
2950 msort_method_addresses_internal (array, indexes, lo, mid, scratch, scratch_indexes);
2951 msort_method_addresses_internal (array, indexes, mid + 1, hi, scratch, scratch_indexes);
2953 if (array [mid] < array [mid + 1])
2959 for (i = lo; i <= hi; i ++) {
2960 if (t_lo <= mid && ((t_hi > hi) || array [t_lo] < array [t_hi])) {
2961 scratch [i] = array [t_lo];
2962 scratch_indexes [i] = indexes [t_lo];
2965 scratch [i] = array [t_hi];
2966 scratch_indexes [i] = indexes [t_hi];
2970 for (i = lo; i <= hi; ++i) {
2971 array [i] = scratch [i];
2972 indexes [i] = scratch_indexes [i];
2977 msort_method_addresses (gpointer *array, int *indexes, int len)
2980 int *scratch_indexes;
2982 scratch = g_new (gpointer, len);
2983 scratch_indexes = g_new (int, len);
2984 msort_method_addresses_internal (array, indexes, 0, len - 1, scratch, scratch_indexes);
2986 g_free (scratch_indexes);
2990 * mono_aot_find_jit_info:
2992 * In async context, the resulting MonoJitInfo will not have its method field set, and it will not be added
2993 * to the jit info tables.
2994 * FIXME: Large sizes in the lock free allocator
2997 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
2999 int pos, left, right, code_len;
3000 int method_index, table_len;
3002 MonoAotModule *amodule = image->aot_module;
3003 MonoMethod *method = NULL;
3005 guint8 *code, *ex_info, *p;
3009 guint8 *code1, *code2;
3016 nmethods = amodule->info.nmethods;
3018 if (domain != mono_get_root_domain ())
3022 if (!amodule_contains_code_addr (amodule, addr))
3025 async = mono_thread_info_is_async_context ();
3027 /* Compute a sorted table mapping code to method indexes. */
3028 if (!amodule->sorted_methods) {
3030 gpointer *methods = g_new0 (gpointer, nmethods);
3031 int *method_indexes = g_new0 (int, nmethods);
3032 int methods_len = 0;
3034 for (i = 0; i < nmethods; ++i) {
3035 /* Skip the -1 entries to speed up sorting */
3036 if (amodule->methods [i] == GINT_TO_POINTER (-1))
3038 methods [methods_len] = amodule->methods [i];
3039 method_indexes [methods_len] = i;
3042 /* Use a merge sort as this is mostly sorted */
3043 msort_method_addresses (methods, method_indexes, methods_len);
3044 for (i = 0; i < methods_len -1; ++i)
3045 g_assert (methods [i] <= methods [i + 1]);
3046 amodule->sorted_methods_len = methods_len;
3047 if (InterlockedCompareExchangePointer ((gpointer*)&amodule->sorted_methods, methods, NULL) != NULL)
3048 /* Somebody got in before us */
3050 if (InterlockedCompareExchangePointer ((gpointer*)&amodule->sorted_method_indexes, method_indexes, NULL) != NULL)
3051 /* Somebody got in before us */
3052 g_free (method_indexes);
3055 /* Binary search in the sorted_methods table */
3056 methods = amodule->sorted_methods;
3057 methods_len = amodule->sorted_methods_len;
3060 right = methods_len;
3062 pos = (left + right) / 2;
3064 code1 = methods [pos];
3065 if (pos + 1 == methods_len) {
3066 if (code1 >= amodule->jit_code_start && code1 < amodule->jit_code_end)
3067 code2 = amodule->jit_code_end;
3069 code2 = amodule->llvm_code_end;
3071 code2 = methods [pos + 1];
3076 else if (code >= code2)
3082 g_assert (addr >= methods [pos]);
3083 if (pos + 1 < methods_len)
3084 g_assert (addr < methods [pos + 1]);
3085 method_index = amodule->sorted_method_indexes [pos];
3087 /* In async mode, jinfo is not added to the normal jit info table, so have to cache it ourselves */
3089 JitInfoMap *table = amodule->async_jit_info_table;
3093 len = table [0].method_index;
3094 for (i = 1; i < len; ++i) {
3095 if (table [i].method_index == method_index)
3096 return table [i].jinfo;
3101 code = amodule->methods [method_index];
3102 ex_info = &amodule->blob [mono_aot_get_offset (amodule->ex_info_offsets, method_index)];
3104 if (pos == methods_len - 1) {
3105 if (code >= amodule->jit_code_start && code < amodule->jit_code_end)
3106 code_len = amodule->jit_code_end - code;
3108 code_len = amodule->llvm_code_end - code;
3110 code_len = (guint8*)methods [pos + 1] - (guint8*)methods [pos];
3113 g_assert ((guint8*)code <= (guint8*)addr && (guint8*)addr < (guint8*)code + code_len);
3115 /* Might be a wrapper/extra method */
3117 if (amodule->extra_methods) {
3118 amodule_lock (amodule);
3119 method = g_hash_table_lookup (amodule->extra_methods, GUINT_TO_POINTER (method_index));
3120 amodule_unlock (amodule);
3126 if (method_index >= image->tables [MONO_TABLE_METHOD].rows) {
3128 * This is hit for extra methods which are called directly, so they are
3129 * not in amodule->extra_methods.
3131 table_len = amodule->extra_method_info_offsets [0];
3132 table = amodule->extra_method_info_offsets + 1;
3139 pos = ((left + right) / 2);
3141 g_assert (pos < table_len);
3143 if (table [pos * 2] < method_index)
3145 else if (table [pos * 2] > method_index)
3151 p = amodule->blob + table [(pos * 2) + 1];
3152 method = decode_resolve_method_ref (amodule, p, &p);
3154 /* Happens when a random address is passed in which matches a not-yey called wrapper encoded using its name */
3157 token = mono_metadata_make_token (MONO_TABLE_METHOD, method_index + 1);
3158 method = mono_get_method (image, token, NULL);
3165 //printf ("F: %s\n", mono_method_full_name (method, TRUE));
3167 jinfo = decode_exception_debug_info (amodule, domain, method, ex_info, addr, code, code_len);
3169 g_assert ((guint8*)addr >= (guint8*)jinfo->code_start);
3171 /* Add it to the normal JitInfo tables */
3173 JitInfoMap *old_table, *new_table;
3177 * Use a simple inmutable table with linear search to cache async jit info entries.
3178 * This assumes that the number of entries is small.
3181 /* Copy the table, adding a new entry at the end */
3182 old_table = amodule->async_jit_info_table;
3184 len = old_table[0].method_index;
3187 new_table = alloc0_jit_info_data (domain, (len + 1) * sizeof (JitInfoMap), async);
3189 memcpy (new_table, old_table, len * sizeof (JitInfoMap));
3190 new_table [0].method_index = len + 1;
3191 new_table [len].method_index = method_index;
3192 new_table [len].jinfo = jinfo;
3194 mono_memory_barrier ();
3195 if (InterlockedCompareExchangePointer ((gpointer)&amodule->async_jit_info_table, new_table, old_table) == old_table)
3199 mono_jit_info_table_add (domain, jinfo);
3202 if ((guint8*)addr >= (guint8*)jinfo->code_start + jinfo->code_size)
3203 /* addr is in the padding between methods, see the adjustment of code_size in decode_exception_debug_info () */
3210 decode_patch (MonoAotModule *aot_module, MonoMemPool *mp, MonoJumpInfo *ji, guint8 *buf, guint8 **endbuf)
3218 case MONO_PATCH_INFO_METHOD:
3219 case MONO_PATCH_INFO_METHOD_JUMP:
3220 case MONO_PATCH_INFO_ICALL_ADDR:
3221 case MONO_PATCH_INFO_METHOD_RGCTX:
3222 case MONO_PATCH_INFO_METHOD_CODE_SLOT: {
3226 res = decode_method_ref (aot_module, &ref, p, &p);
3230 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)) {
3231 ji->data.target = mono_create_ftnptr (mono_domain_get (), mono_create_jit_trampoline_from_token (ref.image, ref.token));
3232 ji->type = MONO_PATCH_INFO_ABS;
3236 ji->data.method = ref.method;
3238 ji->data.method = mono_get_method (ref.image, ref.token, NULL);
3239 g_assert (ji->data.method);
3240 mono_class_init (ji->data.method->klass);
3244 case MONO_PATCH_INFO_INTERNAL_METHOD:
3245 case MONO_PATCH_INFO_JIT_ICALL_ADDR: {
3246 guint32 len = decode_value (p, &p);
3248 ji->data.name = (char*)p;
3252 case MONO_PATCH_INFO_METHODCONST:
3254 ji->data.method = decode_resolve_method_ref (aot_module, p, &p);
3255 if (!ji->data.method)
3258 case MONO_PATCH_INFO_VTABLE:
3259 case MONO_PATCH_INFO_CLASS:
3260 case MONO_PATCH_INFO_IID:
3261 case MONO_PATCH_INFO_ADJUSTED_IID:
3263 ji->data.klass = decode_klass_ref (aot_module, p, &p);
3264 if (!ji->data.klass)
3267 case MONO_PATCH_INFO_DELEGATE_TRAMPOLINE:
3268 ji->data.del_tramp = mono_mempool_alloc0 (mp, sizeof (MonoDelegateClassMethodPair));
3269 ji->data.del_tramp->klass = decode_klass_ref (aot_module, p, &p);
3270 if (!ji->data.del_tramp->klass)
3272 if (decode_value (p, &p)) {
3273 ji->data.del_tramp->method = decode_resolve_method_ref (aot_module, p, &p);
3274 if (!ji->data.del_tramp->method)
3277 ji->data.del_tramp->virtual = decode_value (p, &p) ? TRUE : FALSE;
3279 case MONO_PATCH_INFO_IMAGE:
3280 ji->data.image = load_image (aot_module, decode_value (p, &p), TRUE);
3281 if (!ji->data.image)
3284 case MONO_PATCH_INFO_FIELD:
3285 case MONO_PATCH_INFO_SFLDA:
3287 ji->data.field = decode_field_info (aot_module, p, &p);
3288 if (!ji->data.field)
3291 case MONO_PATCH_INFO_SWITCH:
3292 ji->data.table = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoBBTable));
3293 ji->data.table->table_size = decode_value (p, &p);
3294 table = mono_domain_alloc (mono_domain_get (), sizeof (gpointer) * ji->data.table->table_size);
3295 ji->data.table->table = (MonoBasicBlock**)table;
3296 for (i = 0; i < ji->data.table->table_size; i++)
3297 table [i] = (gpointer)(gssize)decode_value (p, &p);
3299 case MONO_PATCH_INFO_R4: {
3302 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (float));
3303 val = decode_value (p, &p);
3304 *(float*)ji->data.target = *(float*)&val;
3307 case MONO_PATCH_INFO_R8: {
3311 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (double));
3313 val [0] = decode_value (p, &p);
3314 val [1] = decode_value (p, &p);
3315 v = ((guint64)val [1] << 32) | ((guint64)val [0]);
3316 *(double*)ji->data.target = *(double*)&v;
3319 case MONO_PATCH_INFO_LDSTR:
3320 image = load_image (aot_module, decode_value (p, &p), TRUE);
3323 ji->data.token = mono_jump_info_token_new (mp, image, MONO_TOKEN_STRING + decode_value (p, &p));
3325 case MONO_PATCH_INFO_RVA:
3326 case MONO_PATCH_INFO_DECLSEC:
3327 case MONO_PATCH_INFO_LDTOKEN:
3328 case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
3330 image = load_image (aot_module, decode_value (p, &p), TRUE);
3333 ji->data.token = mono_jump_info_token_new (mp, image, decode_value (p, &p));
3335 ji->data.token->has_context = decode_value (p, &p);
3336 if (ji->data.token->has_context) {
3337 gboolean res = decode_generic_context (aot_module, &ji->data.token->context, p, &p);
3342 case MONO_PATCH_INFO_EXC_NAME:
3343 ji->data.klass = decode_klass_ref (aot_module, p, &p);
3344 if (!ji->data.klass)
3346 ji->data.name = ji->data.klass->name;
3348 case MONO_PATCH_INFO_METHOD_REL:
3349 ji->data.offset = decode_value (p, &p);
3351 case MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG:
3352 case MONO_PATCH_INFO_GC_CARD_TABLE_ADDR:
3353 case MONO_PATCH_INFO_GC_NURSERY_START:
3354 case MONO_PATCH_INFO_JIT_TLS_ID:
3356 case MONO_PATCH_INFO_CASTCLASS_CACHE:
3357 ji->data.index = decode_value (p, &p);
3359 case MONO_PATCH_INFO_RGCTX_FETCH: {
3361 MonoJumpInfoRgctxEntry *entry;
3362 guint32 offset, val;
3365 offset = decode_value (p, &p);
3366 val = decode_value (p, &p);
3368 entry = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
3369 p2 = aot_module->blob + offset;
3370 entry->method = decode_resolve_method_ref (aot_module, p2, &p2);
3371 entry->in_mrgctx = ((val & 1) > 0) ? TRUE : FALSE;
3372 entry->info_type = (val >> 1) & 0xff;
3373 entry->data = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
3374 entry->data->type = (val >> 9) & 0xff;
3376 res = decode_patch (aot_module, mp, entry->data, p, &p);
3379 ji->data.rgctx_entry = entry;
3382 case MONO_PATCH_INFO_SEQ_POINT_INFO:
3384 case MONO_PATCH_INFO_LLVM_IMT_TRAMPOLINE: {
3385 MonoJumpInfoImtTramp *imt_tramp = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoImtTramp));
3387 imt_tramp->method = decode_resolve_method_ref (aot_module, p, &p);
3388 imt_tramp->vt_offset = decode_value (p, &p);
3390 ji->data.imt_tramp = imt_tramp;
3393 case MONO_PATCH_INFO_SIGNATURE:
3394 ji->data.target = decode_signature (aot_module, p, &p);
3396 case MONO_PATCH_INFO_TLS_OFFSET:
3397 ji->data.target = GINT_TO_POINTER (decode_value (p, &p));
3399 case MONO_PATCH_INFO_GSHAREDVT_CALL: {
3400 MonoJumpInfoGSharedVtCall *info = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoGSharedVtCall));
3401 info->sig = decode_signature (aot_module, p, &p);
3402 g_assert (info->sig);
3403 info->method = decode_resolve_method_ref (aot_module, p, &p);
3404 g_assert (info->method);
3406 ji->data.target = info;
3409 case MONO_PATCH_INFO_GSHAREDVT_METHOD: {
3410 MonoGSharedVtMethodInfo *info = mono_mempool_alloc0 (mp, sizeof (MonoGSharedVtMethodInfo));
3413 info->method = decode_resolve_method_ref (aot_module, p, &p);
3414 g_assert (info->method);
3415 info->num_entries = decode_value (p, &p);
3416 info->count_entries = info->num_entries;
3417 info->entries = mono_mempool_alloc0 (mp, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->num_entries);
3418 for (i = 0; i < info->num_entries; ++i) {
3419 MonoRuntimeGenericContextInfoTemplate *template = &info->entries [i];
3421 template->info_type = decode_value (p, &p);
3422 switch (mini_rgctx_info_type_to_patch_info_type (template->info_type)) {
3423 case MONO_PATCH_INFO_CLASS: {
3424 MonoClass *klass = decode_klass_ref (aot_module, p, &p);
3427 template->data = &klass->byval_arg;
3430 case MONO_PATCH_INFO_FIELD:
3431 template->data = decode_field_info (aot_module, p, &p);
3432 if (!template->data)
3436 g_assert_not_reached ();
3440 ji->data.target = info;
3443 case MONO_PATCH_INFO_LDSTR_LIT: {
3444 int len = decode_value (p, &p);
3447 s = mono_mempool_alloc0 (mp, len + 1);
3448 memcpy (s, p, len + 1);
3451 ji->data.target = s;
3454 case MONO_PATCH_INFO_VIRT_METHOD: {
3455 MonoJumpInfoVirtMethod *info = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoVirtMethod));
3457 info->klass = decode_klass_ref (aot_module, p, &p);
3458 g_assert (info->klass);
3459 info->method = decode_resolve_method_ref (aot_module, p, &p);
3460 g_assert (info->method);
3462 ji->data.target = info;
3465 case MONO_PATCH_INFO_GC_SAFE_POINT_FLAG:
3468 g_warning ("unhandled type %d", ji->type);
3469 g_assert_not_reached ();
3480 static MonoJumpInfo*
3481 load_patch_info (MonoAotModule *aot_module, MonoMemPool *mp, int n_patches,
3482 gboolean llvm, guint32 **got_slots,
3483 guint8 *buf, guint8 **endbuf)
3485 MonoJumpInfo *patches;
3489 guint32 *got_offsets;
3494 got = aot_module->llvm_got;
3495 got_offsets = aot_module->info.llvm_got_info_offsets;
3497 got = aot_module->got;
3498 got_offsets = aot_module->info.got_info_offsets;
3501 patches = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo) * n_patches);
3503 *got_slots = g_malloc (sizeof (guint32) * n_patches);
3505 for (pindex = 0; pindex < n_patches; ++pindex) {
3506 MonoJumpInfo *ji = &patches [pindex];
3511 got_offset = decode_value (p, &p);
3513 shared_p = aot_module->blob + mono_aot_get_offset (got_offsets, got_offset);
3515 ji->type = decode_value (shared_p, &shared_p);
3517 /* See load_method () for SFLDA */
3518 if (got [got_offset] && ji->type != MONO_PATCH_INFO_SFLDA) {
3519 /* Already loaded */
3521 res = decode_patch (aot_module, mp, ji, shared_p, &shared_p);
3526 (*got_slots) [pindex] = got_offset;
3533 g_free (*got_slots);
3540 register_jump_target_got_slot (MonoDomain *domain, MonoMethod *method, gpointer *got_slot)
3543 * Jump addresses cannot be patched by the trampoline code since it
3544 * does not have access to the caller's address. Instead, we collect
3545 * the addresses of the GOT slots pointing to a method, and patch
3546 * them after the method has been compiled.
3548 MonoJitDomainInfo *info = domain_jit_info (domain);
3551 mono_domain_lock (domain);
3552 if (!info->jump_target_got_slot_hash)
3553 info->jump_target_got_slot_hash = g_hash_table_new (NULL, NULL);
3554 list = g_hash_table_lookup (info->jump_target_got_slot_hash, method);
3555 list = g_slist_prepend (list, got_slot);
3556 g_hash_table_insert (info->jump_target_got_slot_hash, method, list);
3557 mono_domain_unlock (domain);
3563 * Load the method identified by METHOD_INDEX from the AOT image. Return a
3564 * pointer to the native code of the method, or NULL if not found.
3565 * METHOD might not be set if the caller only has the image/token info.
3568 load_method (MonoDomain *domain, MonoAotModule *amodule, MonoImage *image, MonoMethod *method, guint32 token, int method_index)
3571 gboolean from_plt = method == NULL;
3572 MonoJitInfo *jinfo = NULL;
3573 guint8 *code = NULL, *info;
3576 if (mono_profiler_get_events () & MONO_PROFILE_ENTER_LEAVE) {
3578 /* The caller cannot handle this */
3579 g_assert_not_reached ();
3583 if (domain != mono_get_root_domain ())
3584 /* Non shared AOT code can't be used in other appdomains */
3587 if (amodule->out_of_date)
3591 if (amodule->methods [method_index] == GINT_TO_POINTER (-1)) {
3592 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
3596 method = mono_get_method (image, token, NULL);
3597 full_name = mono_method_full_name (method, TRUE);
3598 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT: NOT FOUND: %s.", full_name);
3605 code = amodule->methods [method_index];
3607 info = &amodule->blob [mono_aot_get_offset (amodule->method_info_offsets, method_index)];
3609 if (!amodule->methods_loaded) {
3610 amodule_lock (amodule);
3611 if (!amodule->methods_loaded) {
3614 loaded = g_new0 (guint32, amodule->info.nmethods / 32 + 1);
3615 mono_memory_barrier ();
3616 amodule->methods_loaded = loaded;
3618 amodule_unlock (amodule);
3621 if ((amodule->methods_loaded [method_index / 32] >> (method_index % 32)) & 0x1)
3624 if (mono_last_aot_method != -1) {
3625 if (mono_jit_stats.methods_aot >= mono_last_aot_method)
3627 else if (mono_jit_stats.methods_aot == mono_last_aot_method - 1) {
3629 method = mono_get_method (image, token, NULL);
3631 char *name = mono_method_full_name (method, TRUE);
3632 g_print ("LAST AOT METHOD: %s.\n", name);
3635 g_print ("LAST AOT METHOD: %p %d\n", code, method_index);
3640 res = init_method (amodule, method_index, method, &klass);
3644 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
3648 method = mono_get_method (image, token, NULL);
3650 full_name = mono_method_full_name (method, TRUE);
3653 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
3655 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT: FOUND method %s [%p - %p %p]", full_name, code, code + jinfo->code_size, info);
3659 amodule_lock (amodule);
3661 InterlockedIncrement (&mono_jit_stats.methods_aot);
3663 amodule->methods_loaded [method_index / 32] |= 1 << (method_index % 32);
3667 if (method && method->wrapper_type)
3668 g_hash_table_insert (amodule->method_to_code, method, code);
3670 amodule_unlock (amodule);
3672 if (mono_profiler_get_events () & MONO_PROFILE_JIT_COMPILATION) {
3676 method = mono_get_method (amodule->assembly->image, token, NULL);
3679 mono_profiler_method_jit (method);
3680 jinfo = mono_jit_info_table_find (domain, (char*)code);
3682 mono_profiler_method_end_jit (method, jinfo, MONO_PROFILE_OK);
3685 if (from_plt && klass && !klass->generic_container)
3686 mono_runtime_class_init (mono_class_vtable (domain, klass));
3698 find_aot_method_in_amodule (MonoAotModule *amodule, MonoMethod *method, guint32 hash_full)
3700 guint32 table_size, entry_size, hash;
3701 guint32 *table, *entry;
3703 static guint32 n_extra_decodes;
3705 if (!amodule || amodule->out_of_date)
3708 table_size = amodule->extra_method_table [0];
3709 hash = hash_full % table_size;
3710 table = amodule->extra_method_table + 1;
3713 entry = &table [hash * entry_size];
3720 guint32 key = entry [0];
3721 guint32 value = entry [1];
3722 guint32 next = entry [entry_size - 1];
3726 p = amodule->blob + key;
3729 amodule_lock (amodule);
3730 if (!amodule->method_ref_to_method)
3731 amodule->method_ref_to_method = g_hash_table_new (NULL, NULL);
3732 m = g_hash_table_lookup (amodule->method_ref_to_method, p);
3733 amodule_unlock (amodule);
3735 m = decode_resolve_method_ref_with_target (amodule, method, p, &p);
3737 * Can't catche runtime invoke wrappers since it would break
3738 * the check in decode_method_ref_with_target ().
3740 if (m && m->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE) {
3741 amodule_lock (amodule);
3742 g_hash_table_insert (amodule->method_ref_to_method, orig_p, m);
3743 amodule_unlock (amodule);
3751 /* Special case: wrappers of shared generic methods */
3752 if (m && method->wrapper_type && m->wrapper_type == m->wrapper_type &&
3753 method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
3754 MonoMethod *w1 = mono_marshal_method_from_wrapper (method);
3755 MonoMethod *w2 = mono_marshal_method_from_wrapper (m);
3757 if (w1->is_inflated && ((MonoMethodInflated *)w1)->declaring == w2) {
3763 /* Methods decoded needlessly */
3765 //printf ("%d %s %s %p\n", n_extra_decodes, mono_method_full_name (method, TRUE), mono_method_full_name (m, TRUE), orig_p);
3770 entry = &table [next * entry_size];
3779 add_module_cb (gpointer key, gpointer value, gpointer user_data)
3781 g_ptr_array_add ((GPtrArray*)user_data, value);
3787 * Try finding METHOD in the extra_method table in all AOT images.
3788 * Return its method index, or 0xffffff if not found. Set OUT_AMODULE to the AOT
3789 * module where the method was found.
3792 find_aot_method (MonoMethod *method, MonoAotModule **out_amodule)
3797 guint32 hash = mono_aot_method_hash (method);
3799 /* Try the method's module first */
3800 *out_amodule = method->klass->image->aot_module;
3801 index = find_aot_method_in_amodule (method->klass->image->aot_module, method, hash);
3802 if (index != 0xffffff)
3806 * Try all other modules.
3807 * This is needed because generic instances klass->image points to the image
3808 * containing the generic definition, but the native code is generated to the
3809 * AOT image which contains the reference.
3812 /* Make a copy to avoid doing the search inside the aot lock */
3813 modules = g_ptr_array_new ();
3815 g_hash_table_foreach (aot_modules, add_module_cb, modules);
3819 for (i = 0; i < modules->len; ++i) {
3820 MonoAotModule *amodule = g_ptr_array_index (modules, i);
3822 if (amodule != method->klass->image->aot_module)
3823 index = find_aot_method_in_amodule (amodule, method, hash);
3824 if (index != 0xffffff) {
3825 *out_amodule = amodule;
3830 g_ptr_array_free (modules, TRUE);
3836 mono_aot_find_method_index (MonoMethod *method)
3838 MonoAotModule *out_amodule;
3839 return find_aot_method (method, &out_amodule);
3843 init_method (MonoAotModule *amodule, guint32 method_index, MonoMethod *method, MonoClass **klass)
3845 MonoDomain *domain = mono_domain_get ();
3847 int pindex, n_patches;
3849 MonoJitInfo *jinfo = NULL;
3850 guint8 *code, *info;
3852 code = amodule->methods [method_index];
3853 info = &amodule->blob [mono_aot_get_offset (amodule->method_info_offsets, method_index)];
3858 *klass = method->klass;
3859 decode_klass_ref (amodule, p, &p);
3861 *klass = decode_klass_ref (amodule, p, &p);
3864 n_patches = decode_value (p, &p);
3867 MonoJumpInfo *patches;
3872 mp = mono_mempool_new ();
3874 if ((gpointer)code >= amodule->info.jit_code_start && (gpointer)code <= amodule->info.jit_code_end) {
3879 got = amodule->llvm_got;
3883 patches = load_patch_info (amodule, mp, n_patches, llvm, &got_slots, p, &p);
3884 if (patches == NULL)
3887 for (pindex = 0; pindex < n_patches; ++pindex) {
3888 MonoJumpInfo *ji = &patches [pindex];
3892 * For SFLDA, we need to call resolve_patch_target () since the GOT slot could have
3893 * been initialized by load_method () for a static cctor before the cctor has
3894 * finished executing (#23242).
3896 if (!got [got_slots [pindex]] || ji->type == MONO_PATCH_INFO_SFLDA) {
3897 addr = mono_resolve_patch_target (method, domain, code, ji, TRUE);
3898 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
3899 addr = mono_create_ftnptr (domain, addr);
3900 mono_memory_barrier ();
3901 got [got_slots [pindex]] = addr;
3902 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
3903 register_jump_target_got_slot (domain, ji->data.method, &(got [got_slots [pindex]]));
3905 ji->type = MONO_PATCH_INFO_NONE;
3910 mono_mempool_destroy (mp);
3913 if (mini_get_debug_options ()->load_aot_jit_info_eagerly)
3914 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
3926 * mono_aot_get_method:
3928 * Return a pointer to the AOTed native code for METHOD if it can be found,
3930 * On platforms with function pointers, this doesn't return a function pointer.
3933 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
3935 MonoClass *klass = method->klass;
3936 guint32 method_index;
3937 MonoAotModule *amodule = klass->image->aot_module;
3940 if (enable_aot_cache && !amodule && domain->entry_assembly && klass->image == mono_defaults.corlib) {
3941 /* This cannot be AOTed during startup, so do it now */
3942 if (!mscorlib_aot_loaded) {
3943 mscorlib_aot_loaded = TRUE;
3944 load_aot_module (klass->image->assembly, NULL);
3945 amodule = klass->image->aot_module;
3952 if (amodule->out_of_date)
3955 if ((method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
3956 (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
3957 (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
3958 (method->flags & METHOD_ATTRIBUTE_ABSTRACT))
3962 * Use the original method instead of its invoke-with-check wrapper.
3963 * This is not a problem when using full-aot, since it doesn't support
3966 if (mono_aot_only && method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)
3967 return mono_aot_get_method (domain, mono_marshal_method_from_wrapper (method));
3969 g_assert (klass->inited);
3971 /* Find method index */
3972 method_index = 0xffffff;
3973 if (method->is_inflated && !method->wrapper_type && mono_method_is_generic_sharable_full (method, TRUE, FALSE, FALSE)) {
3975 * For generic methods, we store the fully shared instance in place of the
3978 method = mono_method_get_declaring_generic_method (method);
3979 method_index = mono_metadata_token_index (method->token) - 1;
3980 } else if (method->is_inflated || !method->token) {
3981 /* This hash table is used to avoid the slower search in the extra_method_table in the AOT image */
3982 amodule_lock (amodule);
3983 code = g_hash_table_lookup (amodule->method_to_code, method);
3984 amodule_unlock (amodule);
3988 method_index = find_aot_method (method, &amodule);
3990 * Special case the ICollection<T> wrappers for arrays, as they cannot
3991 * be statically enumerated, and each wrapper ends up calling the same
3994 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED && method->klass->rank && strstr (method->name, "System.Collections.Generic")) {
3995 MonoMethod *m = mono_aot_get_array_helper_from_wrapper (method);
3997 code = mono_aot_get_method (domain, m);
4003 * Special case Array.GetGenericValueImpl which is a generic icall.
4004 * Generic sharing currently can't handle it, but the icall returns data using
4005 * an out parameter, so the managed-to-native wrappers can share the same code.
4007 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass == mono_defaults.array_class && !strcmp (method->name, "GetGenericValueImpl")) {
4010 MonoGenericContext ctx;
4011 MonoType *args [16];
4013 if (mono_method_signature (method)->params [1]->type == MONO_TYPE_OBJECT)
4014 /* Avoid recursion */
4017 m = mono_class_get_method_from_name (mono_defaults.array_class, "GetGenericValueImpl", 2);
4020 memset (&ctx, 0, sizeof (ctx));
4021 args [0] = &mono_defaults.object_class->byval_arg;
4022 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
4024 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method_checked (m, &ctx, &error), TRUE, TRUE);
4025 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
4028 * Get the code for the <object> instantiation which should be emitted into
4029 * the mscorlib aot image by the AOT compiler.
4031 code = mono_aot_get_method (domain, m);
4036 /* Same for CompareExchange<T> and Exchange<T> */
4037 /* Same for Volatile.Read<T>/Write<T> */
4038 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass->image == mono_defaults.corlib &&
4039 ((!strcmp (method->klass->name_space, "System.Threading") && !strcmp (method->klass->name, "Interlocked") && (!strcmp (method->name, "CompareExchange") || !strcmp (method->name, "Exchange")) && MONO_TYPE_IS_REFERENCE (mono_method_signature (method)->params [1])) ||
4040 (!strcmp (method->klass->name_space, "System.Threading") && !strcmp (method->klass->name, "Volatile") && (!strcmp (method->name, "Read") && MONO_TYPE_IS_REFERENCE (mono_method_signature (method)->ret))) ||
4041 (!strcmp (method->klass->name_space, "System.Threading") && !strcmp (method->klass->name, "Volatile") && (!strcmp (method->name, "Write") && MONO_TYPE_IS_REFERENCE (mono_method_signature (method)->params [1]))))) {
4044 MonoGenericContext ctx;
4045 MonoType *args [16];
4046 gpointer iter = NULL;
4048 while ((m = mono_class_get_methods (method->klass, &iter))) {
4049 if (mono_method_signature (m)->generic_param_count && !strcmp (m->name, method->name))
4054 memset (&ctx, 0, sizeof (ctx));
4055 args [0] = &mono_defaults.object_class->byval_arg;
4056 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
4058 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method_checked (m, &ctx, &error), TRUE, TRUE);
4059 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
4061 /* Avoid recursion */
4066 * Get the code for the <object> instantiation which should be emitted into
4067 * the mscorlib aot image by the AOT compiler.
4069 code = mono_aot_get_method (domain, m);
4074 if (method_index == 0xffffff && method->is_inflated && mono_method_is_generic_sharable_full (method, FALSE, TRUE, FALSE)) {
4075 /* Partial sharing */
4078 shared = mini_get_shared_method (method);
4079 method_index = find_aot_method (shared, &amodule);
4080 if (method_index != 0xffffff)
4084 if (method_index == 0xffffff && method->is_inflated && mono_method_is_generic_sharable_full (method, FALSE, FALSE, TRUE)) {
4086 /* Use the all-vt shared method since this is what was AOTed */
4087 method_index = find_aot_method (mini_get_shared_method_full (method, TRUE, TRUE), &amodule);
4088 if (method_index != 0xffffff)
4089 method = mini_get_shared_method_full (method, TRUE, FALSE);
4092 if (method_index == 0xffffff) {
4093 if (mono_aot_only && mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
4096 full_name = mono_method_full_name (method, TRUE);
4097 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.", full_name);
4103 if (method_index == 0xffffff)
4106 /* Needed by find_jit_info */
4107 amodule_lock (amodule);
4108 if (!amodule->extra_methods)
4109 amodule->extra_methods = g_hash_table_new (NULL, NULL);
4110 g_hash_table_insert (amodule->extra_methods, GUINT_TO_POINTER (method_index), method);
4111 amodule_unlock (amodule);
4114 method_index = mono_metadata_token_index (method->token) - 1;
4117 return load_method (domain, amodule, klass->image, method, method->token, method_index);
4121 * Same as mono_aot_get_method, but we try to avoid loading any metadata from the
4125 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
4127 MonoAotModule *aot_module = image->aot_module;
4133 method_index = mono_metadata_token_index (token) - 1;
4135 return load_method (domain, aot_module, image, NULL, token, method_index);
4141 } IsGotEntryUserData;
4144 check_is_got_entry (gpointer key, gpointer value, gpointer user_data)
4146 IsGotEntryUserData *data = (IsGotEntryUserData*)user_data;
4147 MonoAotModule *aot_module = (MonoAotModule*)value;
4149 if (aot_module->got && (data->addr >= (guint8*)(aot_module->got)) && (data->addr < (guint8*)(aot_module->got + aot_module->info.got_size)))
4154 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
4156 IsGotEntryUserData user_data;
4161 user_data.addr = addr;
4162 user_data.res = FALSE;
4164 g_hash_table_foreach (aot_modules, check_is_got_entry, &user_data);
4167 return user_data.res;
4172 MonoAotModule *module;
4173 } FindAotModuleUserData;
4176 find_aot_module_cb (gpointer key, gpointer value, gpointer user_data)
4178 FindAotModuleUserData *data = (FindAotModuleUserData*)user_data;
4179 MonoAotModule *aot_module = (MonoAotModule*)value;
4181 if (amodule_contains_code_addr (aot_module, data->addr))
4182 data->module = aot_module;
4185 static inline MonoAotModule*
4186 find_aot_module (guint8 *code)
4188 FindAotModuleUserData user_data;
4193 /* Reading these need no locking */
4194 if (((gsize)code < aot_code_low_addr) || ((gsize)code > aot_code_high_addr))
4197 user_data.addr = code;
4198 user_data.module = NULL;
4201 g_hash_table_foreach (aot_modules, find_aot_module_cb, &user_data);
4204 return user_data.module;
4208 mono_aot_patch_plt_entry (guint8 *code, guint8 *plt_entry, gpointer *got, mgreg_t *regs, guint8 *addr)
4210 MonoAotModule *amodule;
4213 * Since AOT code is only used in the root domain,
4214 * mono_domain_get () != mono_get_root_domain () means the calling method
4215 * is AppDomain:InvokeInDomain, so this is the same check as in
4216 * mono_method_same_domain () but without loading the metadata for the method.
4218 if (mono_domain_get () == mono_get_root_domain ()) {
4220 amodule = find_aot_module (code);
4224 mono_arch_patch_plt_entry (plt_entry, got, regs, addr);
4229 * mono_aot_plt_resolve:
4231 * This function is called by the entries in the PLT to resolve the actual method that
4232 * needs to be called. It returns a trampoline to the method and patches the PLT entry.
4233 * Returns NULL if the something cannot be loaded.
4236 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
4238 #ifdef MONO_ARCH_AOT_SUPPORTED
4239 guint8 *p, *target, *plt_entry;
4241 MonoAotModule *module = (MonoAotModule*)aot_module;
4242 gboolean res, no_ftnptr = FALSE;
4244 gboolean using_gsharedvt = FALSE;
4246 //printf ("DYN: %p %d\n", aot_module, plt_info_offset);
4248 p = &module->blob [plt_info_offset];
4250 ji.type = decode_value (p, &p);
4252 mp = mono_mempool_new_size (512);
4253 res = decode_patch (module, mp, &ji, p, &p);
4256 mono_mempool_destroy (mp);
4260 #ifdef MONO_ARCH_GSHAREDVT_SUPPORTED
4261 using_gsharedvt = TRUE;
4265 * Avoid calling resolve_patch_target in the full-aot case if possible, since
4266 * it would create a trampoline, and we don't need that.
4267 * We could do this only if the method does not need the special handling
4268 * in mono_magic_trampoline ().
4270 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) &&
4271 !mono_method_needs_static_rgctx_invoke (ji.data.method, FALSE) && !using_gsharedvt) {
4272 target = mono_jit_compile_method (ji.data.method);
4275 target = mono_resolve_patch_target (NULL, mono_domain_get (), NULL, &ji, TRUE);
4279 * The trampoline expects us to return a function descriptor on platforms which use
4280 * it, but resolve_patch_target returns a direct function pointer for some type of
4281 * patches, so have to translate between the two.
4282 * FIXME: Clean this up, but how ?
4284 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) {
4285 /* These should already have a function descriptor */
4286 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
4287 /* Our function descriptors have a 0 environment, gcc created ones don't */
4288 if (ji.type != MONO_PATCH_INFO_INTERNAL_METHOD && ji.type != MONO_PATCH_INFO_JIT_ICALL_ADDR && ji.type != MONO_PATCH_INFO_ICALL_ADDR)
4289 g_assert (((gpointer*)target) [2] == 0);
4292 } else if (!no_ftnptr) {
4293 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
4294 g_assert (((gpointer*)target) [2] != 0);
4296 target = mono_create_ftnptr (mono_domain_get (), target);
4299 mono_mempool_destroy (mp);
4301 /* Patch the PLT entry with target which might be the actual method not a trampoline */
4302 plt_entry = mono_aot_get_plt_entry (code);
4303 g_assert (plt_entry);
4304 mono_aot_patch_plt_entry (code, plt_entry, module->got, NULL, target);
4308 g_assert_not_reached ();
4316 * Initialize the PLT table of the AOT module. Called lazily when the first AOT
4317 * method in the module is loaded to avoid committing memory by writing to it.
4318 * LOCKING: Assumes the AMODULE lock is held.
4321 init_plt (MonoAotModule *amodule)
4326 if (amodule->plt_inited)
4329 tramp = mono_create_specific_trampoline (amodule, MONO_TRAMPOLINE_AOT_PLT, mono_get_root_domain (), NULL);
4332 * Initialize the PLT entries in the GOT to point to the default targets.
4335 tramp = mono_create_ftnptr (mono_domain_get (), tramp);
4336 for (i = 1; i < amodule->info.plt_size; ++i)
4337 /* All the default entries point to the AOT trampoline */
4338 ((gpointer*)amodule->got)[amodule->info.plt_got_offset_base + i] = tramp;
4340 amodule->plt_inited = TRUE;
4344 * mono_aot_get_plt_entry:
4346 * Return the address of the PLT entry called by the code at CODE if exists.
4349 mono_aot_get_plt_entry (guint8 *code)
4351 MonoAotModule *amodule = find_aot_module (code);
4352 guint8 *target = NULL;
4358 if (is_thumb_code (amodule, code))
4359 return mono_arm_get_thumb_plt_entry (code);
4362 #ifdef MONO_ARCH_AOT_SUPPORTED
4363 target = mono_arch_get_call_target (code);
4365 g_assert_not_reached ();
4369 while (target != NULL) {
4370 if ((target >= (guint8*)(amodule->plt)) && (target < (guint8*)(amodule->plt_end)))
4373 // Add 4 since mono_arch_get_call_target assumes we're passing
4374 // the instruction after the actual branch instruction.
4375 target = mono_arch_get_call_target (target + 4);
4380 if ((target >= (guint8*)(amodule->plt)) && (target < (guint8*)(amodule->plt_end)))
4388 * mono_aot_get_plt_info_offset:
4390 * Return the PLT info offset belonging to the plt entry called by CODE.
4393 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
4395 guint8 *plt_entry = mono_aot_get_plt_entry (code);
4397 g_assert (plt_entry);
4399 /* The offset is embedded inside the code after the plt entry */
4400 #ifdef MONO_ARCH_AOT_SUPPORTED
4401 return mono_arch_get_plt_info_offset (plt_entry, regs, code);
4403 g_assert_not_reached ();
4409 mono_create_ftnptr_malloc (guint8 *code)
4411 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
4412 MonoPPCFunctionDescriptor *ftnptr = g_malloc0 (sizeof (MonoPPCFunctionDescriptor));
4414 ftnptr->code = code;
4425 * mono_aot_register_jit_icall:
4427 * Register a JIT icall which is called by trampolines in full-aot mode. This should
4428 * be called from mono_arch_init () during startup.
4431 mono_aot_register_jit_icall (const char *name, gpointer addr)
4433 /* No need for locking */
4434 if (!aot_jit_icall_hash)
4435 aot_jit_icall_hash = g_hash_table_new (g_str_hash, g_str_equal);
4436 g_hash_table_insert (aot_jit_icall_hash, (char*)name, addr);
4440 * load_function_full:
4442 * Load the function named NAME from the aot image.
4445 load_function_full (MonoAotModule *amodule, const char *name, MonoTrampInfo **out_tinfo)
4449 int n_patches, pindex;
4452 guint32 info_offset;
4456 symbol = g_strdup_printf ("%s", name);
4457 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&code);
4460 g_error ("Symbol '%s' not found in AOT file '%s'.\n", name, amodule->aot_name);
4462 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT: FOUND function '%s' in AOT file '%s'.", name, amodule->aot_name);
4466 symbol = g_strdup_printf ("%s_p", name);
4467 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&p);
4470 /* Nothing to patch */
4473 info_offset = *(guint32*)p;
4475 MonoTrampInfo *tinfo;
4476 guint32 code_size, uw_info_len, uw_offset;
4478 /* Construct a MonoTrampInfo from the data in the AOT image */
4480 p += sizeof (guint32);
4481 code_size = *(guint32*)p;
4482 p += sizeof (guint32);
4483 uw_offset = *(guint32*)p;
4484 uw_info = amodule->unwind_info + uw_offset;
4485 uw_info_len = decode_value (uw_info, &uw_info);
4487 tinfo = g_new0 (MonoTrampInfo, 1);
4489 tinfo->code_size = code_size;
4490 tinfo->uw_info = uw_info;
4491 tinfo->uw_info_len = uw_info_len;
4496 p = amodule->blob + info_offset;
4498 /* Similar to mono_aot_load_method () */
4500 n_patches = decode_value (p, &p);
4503 MonoJumpInfo *patches;
4506 mp = mono_mempool_new ();
4508 patches = load_patch_info (amodule, mp, n_patches, FALSE, &got_slots, p, &p);
4511 for (pindex = 0; pindex < n_patches; ++pindex) {
4512 MonoJumpInfo *ji = &patches [pindex];
4515 if (amodule->got [got_slots [pindex]])
4519 * When this code is executed, the runtime may not be initalized yet, so
4520 * resolve the patch info by hand.
4522 if (ji->type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
4523 if (!strcmp (ji->data.name, "mono_get_lmf_addr")) {
4524 target = mono_get_lmf_addr;
4525 } else if (!strcmp (ji->data.name, "mono_thread_force_interruption_checkpoint")) {
4526 target = mono_thread_force_interruption_checkpoint;
4527 } else if (!strcmp (ji->data.name, "mono_exception_from_token")) {
4528 target = mono_exception_from_token;
4529 } else if (!strcmp (ji->data.name, "mono_throw_exception")) {
4530 target = mono_get_throw_exception ();
4531 } else if (strstr (ji->data.name, "trampoline_func_") == ji->data.name) {
4532 int tramp_type2 = atoi (ji->data.name + strlen ("trampoline_func_"));
4533 target = (gpointer)mono_get_trampoline_func (tramp_type2);
4534 } else if (strstr (ji->data.name, "specific_trampoline_lazy_fetch_") == ji->data.name) {
4535 /* atoll is needed because the the offset is unsigned */
4539 res = sscanf (ji->data.name, "specific_trampoline_lazy_fetch_%u", &slot);
4540 g_assert (res == 1);
4541 target = mono_create_specific_trampoline (GUINT_TO_POINTER (slot), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, mono_get_root_domain (), NULL);
4542 target = mono_create_ftnptr_malloc (target);
4543 } else if (!strcmp (ji->data.name, "mono_thread_get_and_clear_pending_exception")) {
4544 target = mono_thread_get_and_clear_pending_exception;
4545 } else if (!strcmp (ji->data.name, "debugger_agent_single_step_from_context")) {
4546 target = debugger_agent_single_step_from_context;
4547 } else if (!strcmp (ji->data.name, "debugger_agent_breakpoint_from_context")) {
4548 target = debugger_agent_breakpoint_from_context;
4549 } else if (strstr (ji->data.name, "generic_trampoline_")) {
4550 target = mono_aot_get_trampoline (ji->data.name);
4551 } else if (aot_jit_icall_hash && g_hash_table_lookup (aot_jit_icall_hash, ji->data.name)) {
4552 /* Registered by mono_arch_init () */
4553 target = g_hash_table_lookup (aot_jit_icall_hash, ji->data.name);
4555 fprintf (stderr, "Unknown relocation '%s'\n", ji->data.name);
4556 g_assert_not_reached ();
4560 /* Hopefully the code doesn't have patches which need method or
4563 target = mono_resolve_patch_target (NULL, NULL, code, ji, FALSE);
4567 amodule->got [got_slots [pindex]] = target;
4572 mono_mempool_destroy (mp);
4579 load_function (MonoAotModule *amodule, const char *name)
4581 return load_function_full (amodule, name, NULL);
4584 static MonoAotModule*
4585 get_mscorlib_aot_module (void)
4588 MonoAotModule *amodule;
4590 image = mono_defaults.corlib;
4592 amodule = image->aot_module;
4594 amodule = mscorlib_aot_module;
4600 * Return the trampoline identified by NAME from the mscorlib AOT file.
4601 * On ppc64, this returns a function descriptor.
4604 mono_aot_get_trampoline_full (const char *name, MonoTrampInfo **out_tinfo)
4606 MonoAotModule *amodule = get_mscorlib_aot_module ();
4608 return mono_create_ftnptr_malloc (load_function_full (amodule, name, out_tinfo));
4612 mono_aot_get_trampoline (const char *name)
4614 MonoTrampInfo *out_tinfo;
4617 code = mono_aot_get_trampoline_full (name, &out_tinfo);
4618 mono_tramp_info_register (out_tinfo, NULL);
4624 read_unwind_info (MonoAotModule *amodule, MonoTrampInfo *info, const char *symbol_name)
4626 gpointer symbol_addr;
4627 guint32 uw_offset, uw_info_len;
4630 find_symbol (amodule->sofile, amodule->globals, symbol_name, &symbol_addr);
4635 uw_offset = *(guint32*)symbol_addr;
4636 uw_info = amodule->unwind_info + uw_offset;
4637 uw_info_len = decode_value (uw_info, &uw_info);
4639 info->uw_info = uw_info;
4640 info->uw_info_len = uw_info_len;
4642 /* If successful return the address of the following data */
4643 return (guint32*)symbol_addr + 1;
4647 #include <mach/mach.h>
4649 static TrampolinePage* trampoline_pages [MONO_AOT_TRAMP_NUM];
4652 read_page_trampoline_uwinfo (MonoTrampInfo *info, int tramp_type, gboolean is_generic)
4654 char symbol_name [128];
4656 if (tramp_type == MONO_AOT_TRAMP_SPECIFIC)
4657 sprintf (symbol_name, "specific_trampolines_page_%s_p", is_generic ? "gen" : "sp");
4658 else if (tramp_type == MONO_AOT_TRAMP_STATIC_RGCTX)
4659 sprintf (symbol_name, "rgctx_trampolines_page_%s_p", is_generic ? "gen" : "sp");
4660 else if (tramp_type == MONO_AOT_TRAMP_IMT_THUNK)
4661 sprintf (symbol_name, "imt_trampolines_page_%s_p", is_generic ? "gen" : "sp");
4662 else if (tramp_type == MONO_AOT_TRAMP_GSHAREDVT_ARG)
4663 sprintf (symbol_name, "gsharedvt_trampolines_page_%s_p", is_generic ? "gen" : "sp");
4665 g_assert_not_reached ();
4667 read_unwind_info (mono_defaults.corlib->aot_module, info, symbol_name);
4670 static unsigned char*
4671 get_new_trampoline_from_page (int tramp_type)
4673 MonoAotModule *amodule;
4675 TrampolinePage *page;
4678 vm_address_t addr, taddr;
4680 vm_prot_t prot, max_prot;
4681 int psize, specific_trampoline_size;
4682 unsigned char *code;
4684 specific_trampoline_size = 2 * sizeof (gpointer);
4686 mono_aot_page_lock ();
4687 page = trampoline_pages [tramp_type];
4688 if (page && page->trampolines < page->trampolines_end) {
4689 code = page->trampolines;
4690 page->trampolines += specific_trampoline_size;
4691 mono_aot_page_unlock ();
4694 mono_aot_page_unlock ();
4695 /* the trampoline template page is in the mscorlib module */
4696 image = mono_defaults.corlib;
4699 psize = MONO_AOT_TRAMP_PAGE_SIZE;
4701 amodule = image->aot_module;
4704 if (tramp_type == MONO_AOT_TRAMP_SPECIFIC)
4705 tpage = load_function (amodule, "specific_trampolines_page");
4706 else if (tramp_type == MONO_AOT_TRAMP_STATIC_RGCTX)
4707 tpage = load_function (amodule, "rgctx_trampolines_page");
4708 else if (tramp_type == MONO_AOT_TRAMP_IMT_THUNK)
4709 tpage = load_function (amodule, "imt_trampolines_page");
4710 else if (tramp_type == MONO_AOT_TRAMP_GSHAREDVT_ARG)
4711 tpage = load_function (amodule, "gsharedvt_arg_trampolines_page");
4713 g_error ("Incorrect tramp type for trampolines page");
4715 /*g_warning ("loaded trampolines page at %x", tpage);*/
4717 /* avoid the unlikely case of looping forever */
4720 while (page == NULL && count-- > 0) {
4721 MonoTrampInfo *gen_info, *sp_info;
4724 /* allocate two contiguous pages of memory: the first page will contain the data (like a local constant pool)
4725 * while the second will contain the trampolines.
4727 ret = vm_allocate (mach_task_self (), &addr, psize * 2, VM_FLAGS_ANYWHERE);
4728 if (ret != KERN_SUCCESS) {
4729 g_error ("Cannot allocate memory for trampolines: %d", ret);
4732 /*g_warning ("allocated trampoline double page at %x", addr);*/
4733 /* replace the second page with a remapped trampoline page */
4734 taddr = addr + psize;
4735 vm_deallocate (mach_task_self (), taddr, psize);
4736 ret = vm_remap (mach_task_self (), &taddr, psize, 0, FALSE, mach_task_self(), (vm_address_t)tpage, FALSE, &prot, &max_prot, VM_INHERIT_SHARE);
4737 if (ret != KERN_SUCCESS) {
4738 /* someone else got the page, try again */
4739 vm_deallocate (mach_task_self (), addr, psize);
4742 /*g_warning ("remapped trampoline page at %x", taddr);*/
4744 mono_aot_page_lock ();
4745 page = trampoline_pages [tramp_type];
4746 /* some other thread already allocated, so use that to avoid wasting memory */
4747 if (page && page->trampolines < page->trampolines_end) {
4748 code = page->trampolines;
4749 page->trampolines += specific_trampoline_size;
4750 mono_aot_page_unlock ();
4751 vm_deallocate (mach_task_self (), addr, psize);
4752 vm_deallocate (mach_task_self (), taddr, psize);
4755 page = (TrampolinePage*)addr;
4756 page->next = trampoline_pages [tramp_type];
4757 trampoline_pages [tramp_type] = page;
4758 page->trampolines = (void*)(taddr + amodule->info.tramp_page_code_offsets [tramp_type]);
4759 page->trampolines_end = (void*)(taddr + psize - 64);
4760 code = page->trampolines;
4761 page->trampolines += specific_trampoline_size;
4762 mono_aot_page_unlock ();
4764 /* Register the generic part at the beggining of the trampoline page */
4765 gen_info = mono_tramp_info_create (NULL, (guint8*)taddr, amodule->info.tramp_page_code_offsets [tramp_type], NULL, NULL);
4766 read_page_trampoline_uwinfo (gen_info, tramp_type, TRUE);
4767 mono_tramp_info_register (gen_info, NULL);
4770 * Registering each specific trampoline produces a lot of
4771 * MonoJitInfo structures. Jump trampolines are also registered
4774 if (tramp_type != MONO_AOT_TRAMP_SPECIFIC) {
4775 /* Register the rest of the page as a single trampoline */
4776 sp_info = mono_tramp_info_create (NULL, code, page->trampolines_end - code, NULL, NULL);
4777 read_page_trampoline_uwinfo (sp_info, tramp_type, FALSE);
4778 mono_tramp_info_register (sp_info, NULL);
4782 g_error ("Cannot allocate more trampoline pages: %d", ret);
4787 static unsigned char*
4788 get_new_trampoline_from_page (int tramp_type)
4790 g_error ("Page trampolines not supported.");
4797 get_new_specific_trampoline_from_page (gpointer tramp, gpointer arg)
4802 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_SPECIFIC);
4804 data = (gpointer*)((char*)code - MONO_AOT_TRAMP_PAGE_SIZE);
4807 /*g_warning ("new trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
4813 get_new_rgctx_trampoline_from_page (gpointer tramp, gpointer arg)
4818 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_STATIC_RGCTX);
4820 data = (gpointer*)((char*)code - MONO_AOT_TRAMP_PAGE_SIZE);
4823 /*g_warning ("new rgctx trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
4829 get_new_imt_trampoline_from_page (gpointer arg)
4834 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_IMT_THUNK);
4836 data = (gpointer*)((char*)code - MONO_AOT_TRAMP_PAGE_SIZE);
4838 /*g_warning ("new imt trampoline at %p for data %p, (stored at %p)", code, arg, data);*/
4844 get_new_gsharedvt_arg_trampoline_from_page (gpointer tramp, gpointer arg)
4849 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_GSHAREDVT_ARG);
4851 data = (gpointer*)((char*)code - MONO_AOT_TRAMP_PAGE_SIZE);
4854 /*g_warning ("new rgctx trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
4858 /* Return a given kind of trampoline */
4859 /* FIXME set unwind info for these trampolines */
4861 get_numerous_trampoline (MonoAotTrampoline tramp_type, int n_got_slots, MonoAotModule **out_amodule, guint32 *got_offset, guint32 *out_tramp_size)
4864 MonoAotModule *amodule = get_mscorlib_aot_module ();
4865 int index, tramp_size;
4867 /* Currently, we keep all trampolines in the mscorlib AOT image */
4868 image = mono_defaults.corlib;
4870 *out_amodule = amodule;
4875 #define MONOTOUCH_TRAMPOLINES_ERROR ". See http://docs.xamarin.com/ios/troubleshooting for instructions on how to fix this condition."
4877 #define MONOTOUCH_TRAMPOLINES_ERROR ""
4879 if (amodule->trampoline_index [tramp_type] == amodule->info.num_trampolines [tramp_type]) {
4880 g_error ("Ran out of trampolines of type %d in '%s' (%d)%s\n",
4881 tramp_type, image ? image->name : "mscorlib", amodule->info.num_trampolines [tramp_type], MONOTOUCH_TRAMPOLINES_ERROR);
4883 index = amodule->trampoline_index [tramp_type] ++;
4887 *got_offset = amodule->info.trampoline_got_offset_base [tramp_type] + (index * n_got_slots);
4889 tramp_size = amodule->info.trampoline_size [tramp_type];
4892 *out_tramp_size = tramp_size;
4894 return amodule->trampolines [tramp_type] + (index * tramp_size);
4898 * Return a specific trampoline from the AOT file.
4901 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
4903 MonoAotModule *amodule;
4904 guint32 got_offset, tramp_size;
4905 guint8 *code, *tramp;
4906 static gpointer generic_trampolines [MONO_TRAMPOLINE_NUM];
4907 static gboolean inited;
4908 static guint32 num_trampolines;
4914 mono_counters_register ("Specific trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &num_trampolines);
4923 if (!generic_trampolines [tramp_type]) {
4926 symbol = mono_get_generic_trampoline_name (tramp_type);
4927 generic_trampolines [tramp_type] = mono_aot_get_trampoline (symbol);
4931 tramp = generic_trampolines [tramp_type];
4934 if (USE_PAGE_TRAMPOLINES) {
4935 code = get_new_specific_trampoline_from_page (tramp, arg1);
4938 code = get_numerous_trampoline (MONO_AOT_TRAMP_SPECIFIC, 2, &amodule, &got_offset, &tramp_size);
4940 amodule->got [got_offset] = tramp;
4941 amodule->got [got_offset + 1] = arg1;
4945 *code_len = tramp_size;
4951 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
4953 MonoAotModule *amodule;
4957 if (USE_PAGE_TRAMPOLINES) {
4958 code = get_new_rgctx_trampoline_from_page (addr, ctx);
4960 code = get_numerous_trampoline (MONO_AOT_TRAMP_STATIC_RGCTX, 2, &amodule, &got_offset, NULL);
4962 amodule->got [got_offset] = ctx;
4963 amodule->got [got_offset + 1] = addr;
4966 /* The caller expects an ftnptr */
4967 return mono_create_ftnptr (mono_domain_get (), code);
4971 mono_aot_get_unbox_trampoline (MonoMethod *method)
4973 guint32 method_index = mono_metadata_token_index (method->token) - 1;
4974 MonoAotModule *amodule;
4976 guint32 *ut, *ut_end, *entry;
4977 int low, high, entry_index = 0;
4978 gpointer symbol_addr;
4979 MonoTrampInfo *tinfo;
4981 if (method->is_inflated && !mono_method_is_generic_sharable_full (method, FALSE, FALSE, FALSE)) {
4982 method_index = find_aot_method (method, &amodule);
4983 if (method_index == 0xffffff && mono_method_is_generic_sharable_full (method, FALSE, TRUE, FALSE)) {
4984 MonoMethod *shared = mini_get_shared_method_full (method, FALSE, FALSE);
4985 method_index = find_aot_method (shared, &amodule);
4987 if (method_index == 0xffffff && mono_method_is_generic_sharable_full (method, FALSE, TRUE, TRUE)) {
4988 MonoMethod *shared = mini_get_shared_method_full (method, TRUE, TRUE);
4989 method_index = find_aot_method (shared, &amodule);
4991 g_assert (method_index != 0xffffff);
4993 amodule = method->klass->image->aot_module;
4997 ut = amodule->unbox_trampolines;
4998 ut_end = amodule->unbox_trampolines_end;
5000 /* Do a binary search in the sorted table */
5003 high = (ut_end - ut);
5004 while (low < high) {
5005 entry_index = (low + high) / 2;
5006 entry = &ut [entry_index];
5007 if (entry [0] < method_index) {
5008 low = entry_index + 1;
5009 } else if (entry [0] > method_index) {
5016 code = get_call_table_entry (amodule->unbox_trampoline_addresses, entry_index);
5019 tinfo = mono_tramp_info_create (NULL, code, 0, NULL, NULL);
5021 symbol_addr = read_unwind_info (amodule, tinfo, "unbox_trampoline_p");
5023 mono_tramp_info_free (tinfo);
5027 tinfo->code_size = *(guint32*)symbol_addr;
5028 mono_tramp_info_register (tinfo, NULL);
5030 /* The caller expects an ftnptr */
5031 return mono_create_ftnptr (mono_domain_get (), code);
5035 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
5039 MonoAotModule *amodule = mono_defaults.corlib->aot_module;
5040 guint32 index = MONO_RGCTX_SLOT_INDEX (slot);
5041 static int count = 0;
5044 if (index >= amodule->info.num_rgctx_fetch_trampolines) {
5045 static gpointer addr;
5049 * Use the general version of the rgctx fetch trampoline. It receives a pair of <slot, trampoline> in the rgctx arg reg.
5052 addr = load_function (amodule, "rgctx_fetch_trampoline_general");
5053 info = mono_domain_alloc0 (mono_get_root_domain (), sizeof (gpointer) * 2);
5054 info [0] = GUINT_TO_POINTER (slot);
5055 info [1] = mono_create_specific_trampoline (GUINT_TO_POINTER (slot), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, mono_get_root_domain (), NULL);
5056 code = mono_aot_get_static_rgctx_trampoline (info, addr);
5057 return mono_create_ftnptr (mono_domain_get (), code);
5060 symbol = mono_get_rgctx_fetch_trampoline_name (slot);
5061 code = load_function (mono_defaults.corlib->aot_module, symbol);
5063 /* The caller expects an ftnptr */
5064 return mono_create_ftnptr (mono_domain_get (), code);
5068 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
5073 int i, index, real_count;
5074 MonoAotModule *amodule;
5077 for (i = 0; i < count; ++i) {
5078 MonoIMTCheckItem *item = imt_entries [i];
5080 if (item->is_equals)
5084 /* Save the entries into an array */
5085 buf = mono_domain_alloc (domain, (real_count + 1) * 2 * sizeof (gpointer));
5087 for (i = 0; i < count; ++i) {
5088 MonoIMTCheckItem *item = imt_entries [i];
5090 if (!item->is_equals)
5093 g_assert (item->key);
5095 buf [(index * 2)] = item->key;
5096 if (item->has_target_code) {
5097 gpointer *p = mono_domain_alloc (domain, sizeof (gpointer));
5098 *p = item->value.target_code;
5099 buf [(index * 2) + 1] = p;
5101 buf [(index * 2) + 1] = &(vtable->vtable [item->value.vtable_slot]);
5105 buf [(index * 2)] = NULL;
5106 buf [(index * 2) + 1] = fail_tramp;
5108 if (USE_PAGE_TRAMPOLINES) {
5109 code = get_new_imt_trampoline_from_page (buf);
5111 code = get_numerous_trampoline (MONO_AOT_TRAMP_IMT_THUNK, 1, &amodule, &got_offset, NULL);
5113 amodule->got [got_offset] = buf;
5120 mono_aot_get_gsharedvt_arg_trampoline (gpointer arg, gpointer addr)
5122 MonoAotModule *amodule;
5126 if (USE_PAGE_TRAMPOLINES) {
5127 code = get_new_gsharedvt_arg_trampoline_from_page (addr, arg);
5129 code = get_numerous_trampoline (MONO_AOT_TRAMP_GSHAREDVT_ARG, 2, &amodule, &got_offset, NULL);
5131 amodule->got [got_offset] = arg;
5132 amodule->got [got_offset + 1] = addr;
5135 /* The caller expects an ftnptr */
5136 return mono_create_ftnptr (mono_domain_get (), code);
5140 * mono_aot_set_make_unreadable:
5142 * Set whenever to make all mmaped memory unreadable. In conjuction with a
5143 * SIGSEGV handler, this is useful to find out which pages the runtime tries to read.
5146 mono_aot_set_make_unreadable (gboolean unreadable)
5150 make_unreadable = unreadable;
5152 if (make_unreadable && !inited) {
5153 mono_counters_register ("AOT: pagefaults", MONO_COUNTER_JIT | MONO_COUNTER_INT, &n_pagefaults);
5158 MonoAotModule *module;
5163 find_map (gpointer key, gpointer value, gpointer user_data)
5165 MonoAotModule *module = (MonoAotModule*)value;
5166 FindMapUserData *data = (FindMapUserData*)user_data;
5169 if ((data->ptr >= module->mem_begin) && (data->ptr < module->mem_end))
5170 data->module = module;
5173 static MonoAotModule*
5174 find_module_for_addr (void *ptr)
5176 FindMapUserData data;
5178 if (!make_unreadable)
5182 data.ptr = (guint8*)ptr;
5185 g_hash_table_foreach (aot_modules, (GHFunc)find_map, &data);
5192 * mono_aot_is_pagefault:
5194 * Should be called from a SIGSEGV signal handler to find out whenever @ptr is
5195 * within memory allocated by this module.
5198 mono_aot_is_pagefault (void *ptr)
5200 if (!make_unreadable)
5204 * Not signal safe, but SIGSEGV's are synchronous, and
5205 * this is only turned on by a MONO_DEBUG option.
5207 return find_module_for_addr (ptr) != NULL;
5211 * mono_aot_handle_pagefault:
5213 * Handle a pagefault caused by an unreadable page by making it readable again.
5216 mono_aot_handle_pagefault (void *ptr)
5218 #ifndef PLATFORM_WIN32
5219 guint8* start = (guint8*)ROUND_DOWN (((gssize)ptr), mono_pagesize ());
5223 res = mono_mprotect (start, mono_pagesize (), MONO_MMAP_READ|MONO_MMAP_WRITE|MONO_MMAP_EXEC);
5224 g_assert (res == 0);
5235 mono_aot_init (void)
5240 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
5246 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
5252 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
5258 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
5264 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
5270 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
5276 mono_aot_get_plt_entry (guint8 *code)
5282 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
5288 mono_aot_patch_plt_entry (guint8 *code, guint8 *plt_entry, gpointer *got, mgreg_t *regs, guint8 *addr)
5293 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
5299 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
5301 g_assert_not_reached ();
5307 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
5309 g_assert_not_reached ();
5314 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
5316 g_assert_not_reached ();
5321 mono_aot_get_trampoline (const char *name)
5323 g_assert_not_reached ();
5328 mono_aot_get_unbox_trampoline (MonoMethod *method)
5330 g_assert_not_reached ();
5335 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
5337 g_assert_not_reached ();
5342 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
5344 g_assert_not_reached ();
5349 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
5351 g_assert_not_reached ();
5356 mono_aot_register_jit_icall (const char *name, gpointer addr)