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;
1874 #if defined (TARGET_ARM) && defined (TARGET_MACH)
1879 memset (&t, 0, sizeof (MonoType));
1880 t.type = MONO_TYPE_R8;
1881 mono_type_size (&t, &align);
1882 align_double = align;
1884 memset (&t, 0, sizeof (MonoType));
1885 t.type = MONO_TYPE_I8;
1886 align_int64 = align;
1889 align_double = MONO_ABI_ALIGNOF (double);
1890 align_int64 = MONO_ABI_ALIGNOF (gint64);
1894 g_assert (info->double_align == align_double);
1895 g_assert (info->long_align == align_int64);
1896 g_assert (info->generic_tramp_num == MONO_TRAMPOLINE_NUM);
1900 amodule = g_new0 (MonoAotModule, 1);
1901 amodule->aot_name = aot_name;
1902 amodule->assembly = assembly;
1904 memcpy (&amodule->info, info, sizeof (*info));
1906 amodule->got = amodule->info.jit_got;
1907 amodule->llvm_got = amodule->info.llvm_got;
1908 amodule->globals = globals;
1909 amodule->sofile = sofile;
1910 amodule->method_to_code = g_hash_table_new (mono_aligned_addr_hash, NULL);
1911 amodule->blob = blob;
1913 mono_mutex_init_recursive (&amodule->mutex);
1915 /* Read image table */
1917 guint32 table_len, i;
1920 table = info->image_table;
1923 table_len = *(guint32*)table;
1924 table += sizeof (guint32);
1925 amodule->image_table = g_new0 (MonoImage*, table_len);
1926 amodule->image_names = g_new0 (MonoAssemblyName, table_len);
1927 amodule->image_guids = g_new0 (char*, table_len);
1928 amodule->image_table_len = table_len;
1929 for (i = 0; i < table_len; ++i) {
1930 MonoAssemblyName *aname = &(amodule->image_names [i]);
1932 aname->name = g_strdup (table);
1933 table += strlen (table) + 1;
1934 amodule->image_guids [i] = g_strdup (table);
1935 table += strlen (table) + 1;
1937 aname->culture = g_strdup (table);
1938 table += strlen (table) + 1;
1939 memcpy (aname->public_key_token, table, strlen (table) + 1);
1940 table += strlen (table) + 1;
1942 table = ALIGN_PTR_TO (table, 8);
1943 aname->flags = *(guint32*)table;
1945 aname->major = *(guint32*)table;
1947 aname->minor = *(guint32*)table;
1949 aname->build = *(guint32*)table;
1951 aname->revision = *(guint32*)table;
1956 amodule->jit_code_start = info->jit_code_start;
1957 amodule->jit_code_end = info->jit_code_end;
1958 amodule->method_info_offsets = info->method_info_offsets;
1959 amodule->ex_info_offsets = info->ex_info_offsets;
1960 amodule->class_info_offsets = info->class_info_offsets;
1961 amodule->class_name_table = info->class_name_table;
1962 amodule->extra_method_table = info->extra_method_table;
1963 amodule->extra_method_info_offsets = info->extra_method_info_offsets;
1964 amodule->unbox_trampolines = info->unbox_trampolines;
1965 amodule->unbox_trampolines_end = info->unbox_trampolines_end;
1966 amodule->unbox_trampoline_addresses = info->unbox_trampoline_addresses;
1967 amodule->unwind_info = info->unwind_info;
1968 amodule->mem_begin = amodule->jit_code_start;
1969 amodule->mem_end = info->mem_end;
1970 amodule->plt = info->plt;
1971 amodule->plt_end = info->plt_end;
1972 amodule->mono_eh_frame = info->mono_eh_frame;
1973 amodule->trampolines [MONO_AOT_TRAMP_SPECIFIC] = info->specific_trampolines;
1974 amodule->trampolines [MONO_AOT_TRAMP_STATIC_RGCTX] = info->static_rgctx_trampolines;
1975 amodule->trampolines [MONO_AOT_TRAMP_IMT_THUNK] = info->imt_thunks;
1976 amodule->trampolines [MONO_AOT_TRAMP_GSHAREDVT_ARG] = info->gsharedvt_arg_trampolines;
1978 if (!strcmp (assembly->aname.name, "mscorlib"))
1979 mscorlib_aot_module = amodule;
1981 /* Compute method addresses */
1982 amodule->methods = g_malloc0 (amodule->info.nmethods * sizeof (gpointer));
1983 for (i = 0; i < amodule->info.nmethods; ++i) {
1986 /* method_addresses () contains a table of branches, since the ios linker can update those correctly */
1987 if (!addr && amodule->info.method_addresses) {
1988 addr = get_call_table_entry (amodule->info.method_addresses, i);
1990 if (addr == amodule->info.method_addresses)
1994 amodule->methods [i] = GINT_TO_POINTER (-1);
1996 amodule->methods [i] = addr;
1999 if (make_unreadable) {
2000 #ifndef TARGET_WIN32
2002 guint8 *page_start, *page_end;
2005 addr = amodule->mem_begin;
2007 len = amodule->mem_end - amodule->mem_begin;
2009 /* Round down in both directions to avoid modifying data which is not ours */
2010 page_start = (guint8 *) (((gssize) (addr)) & ~ (mono_pagesize () - 1)) + mono_pagesize ();
2011 page_end = (guint8 *) (((gssize) (addr + len)) & ~ (mono_pagesize () - 1));
2012 if (page_end > page_start) {
2013 err = mono_mprotect (page_start, (page_end - page_start), MONO_MMAP_NONE);
2014 g_assert (err == 0);
2019 /* Compute the boundaries of LLVM code */
2020 if (info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM)
2021 compute_llvm_code_range (amodule, &amodule->llvm_code_start, &amodule->llvm_code_end);
2025 if (amodule->jit_code_start) {
2026 aot_code_low_addr = MIN (aot_code_low_addr, (gsize)amodule->jit_code_start);
2027 aot_code_high_addr = MAX (aot_code_high_addr, (gsize)amodule->jit_code_end);
2029 if (amodule->llvm_code_start) {
2030 aot_code_low_addr = MIN (aot_code_low_addr, (gsize)amodule->llvm_code_start);
2031 aot_code_high_addr = MAX (aot_code_high_addr, (gsize)amodule->llvm_code_end);
2034 g_hash_table_insert (aot_modules, assembly, amodule);
2037 if (amodule->jit_code_start)
2038 mono_jit_info_add_aot_module (assembly->image, amodule->jit_code_start, amodule->jit_code_end);
2039 if (amodule->llvm_code_start)
2040 mono_jit_info_add_aot_module (assembly->image, amodule->llvm_code_start, amodule->llvm_code_end);
2042 assembly->image->aot_module = amodule;
2044 amodule->shared_got [0] = assembly->image;
2046 if (mono_aot_only) {
2048 find_symbol (amodule->sofile, amodule->globals, "specific_trampolines_page", (gpointer *)&code);
2049 amodule->use_page_trampolines = code != NULL;
2050 /*g_warning ("using page trampolines: %d", amodule->use_page_trampolines);*/
2051 if (mono_defaults.corlib) {
2052 /* The second got slot contains the mscorlib got addr */
2053 MonoAotModule *mscorlib_amodule = mono_defaults.corlib->aot_module;
2055 amodule->shared_got [1] = mscorlib_amodule->got;
2057 amodule->shared_got [1] = amodule->got;
2061 if (mono_gc_is_moving ()) {
2064 memset (&ji, 0, sizeof (ji));
2065 ji.type = MONO_PATCH_INFO_GC_CARD_TABLE_ADDR;
2066 amodule->shared_got [2] = mono_resolve_patch_target (NULL, mono_get_root_domain (), NULL, &ji, FALSE);
2068 memset (&ji, 0, sizeof (ji));
2069 ji.type = MONO_PATCH_INFO_GC_NURSERY_START;
2070 amodule->shared_got [3] = mono_resolve_patch_target (NULL, mono_get_root_domain (), NULL, &ji, FALSE);
2073 init_gots (amodule);
2076 * Register the plt region as a single trampoline so we can unwind from this code
2078 mono_tramp_info_register (
2079 mono_tramp_info_create (
2082 amodule->plt_end - amodule->plt,
2084 mono_unwind_get_cie_program ()
2090 * Since we store methoddef and classdef tokens when referring to methods/classes in
2091 * referenced assemblies, we depend on the exact versions of the referenced assemblies.
2092 * MS calls this 'hard binding'. This means we have to load all referenced assemblies
2093 * non-lazily, since we can't handle out-of-date errors later.
2094 * The cached class info also depends on the exact assemblies.
2096 #if defined(__native_client__)
2097 /* TODO: Don't 'load_image' on mscorlib due to a */
2098 /* recursive loading problem. This should be */
2099 /* removed if mscorlib is loaded from disk. */
2100 if (strncmp(assembly->aname.name, "mscorlib", 8)) {
2101 do_load_image = TRUE;
2103 do_load_image = FALSE;
2106 if (do_load_image) {
2107 for (i = 0; i < amodule->image_table_len; ++i)
2108 load_image (amodule, i, FALSE);
2111 if (amodule->out_of_date) {
2112 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);
2114 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);
2117 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: loaded AOT Module for %s.\n", assembly->image->name);
2121 * mono_aot_register_globals:
2123 * This is called by the ctor function in AOT images compiled with the
2124 * 'no-dlsym' option.
2127 mono_aot_register_globals (gpointer *globals)
2129 g_assert_not_reached ();
2133 * mono_aot_register_module:
2135 * This should be called by embedding code to register AOT modules statically linked
2136 * into the executable. AOT_INFO should be the value of the
2137 * 'mono_aot_module_<ASSEMBLY_NAME>_info' global symbol from the AOT module.
2140 mono_aot_register_module (gpointer *aot_info)
2144 MonoAotFileInfo *info = (gpointer)aot_info;
2146 g_assert (info->version == MONO_AOT_FILE_VERSION);
2148 globals = info->globals;
2151 aname = info->assembly_name;
2153 /* This could be called before startup */
2157 if (!static_aot_modules)
2158 static_aot_modules = g_hash_table_new (g_str_hash, g_str_equal);
2160 g_hash_table_insert (static_aot_modules, aname, info);
2167 mono_aot_init (void)
2169 mono_mutex_init_recursive (&aot_mutex);
2170 mono_mutex_init_recursive (&aot_page_mutex);
2171 aot_modules = g_hash_table_new (NULL, NULL);
2173 #ifndef __native_client__
2174 mono_install_assembly_load_hook (load_aot_module, NULL);
2176 mono_counters_register ("Async JIT info size", MONO_COUNTER_INT|MONO_COUNTER_JIT, &async_jit_info_size);
2178 if (g_getenv ("MONO_LASTAOT"))
2179 mono_last_aot_method = atoi (g_getenv ("MONO_LASTAOT"));
2184 mono_aot_cleanup (void)
2186 if (aot_jit_icall_hash)
2187 g_hash_table_destroy (aot_jit_icall_hash);
2189 g_hash_table_destroy (aot_modules);
2193 decode_cached_class_info (MonoAotModule *module, MonoCachedClassInfo *info, guint8 *buf, guint8 **endbuf)
2199 info->vtable_size = decode_value (buf, &buf);
2200 if (info->vtable_size == -1)
2203 flags = decode_value (buf, &buf);
2204 info->ghcimpl = (flags >> 0) & 0x1;
2205 info->has_finalize = (flags >> 1) & 0x1;
2206 info->has_cctor = (flags >> 2) & 0x1;
2207 info->has_nested_classes = (flags >> 3) & 0x1;
2208 info->blittable = (flags >> 4) & 0x1;
2209 info->has_references = (flags >> 5) & 0x1;
2210 info->has_static_refs = (flags >> 6) & 0x1;
2211 info->no_special_static_fields = (flags >> 7) & 0x1;
2212 info->is_generic_container = (flags >> 8) & 0x1;
2214 if (info->has_cctor) {
2215 res = decode_method_ref (module, &ref, buf, &buf);
2218 info->cctor_token = ref.token;
2220 if (info->has_finalize) {
2221 res = decode_method_ref (module, &ref, buf, &buf);
2224 info->finalize_image = ref.image;
2225 info->finalize_token = ref.token;
2228 info->instance_size = decode_value (buf, &buf);
2229 info->class_size = decode_value (buf, &buf);
2230 info->packing_size = decode_value (buf, &buf);
2231 info->min_align = decode_value (buf, &buf);
2239 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
2242 MonoClass *klass = vtable->klass;
2243 MonoAotModule *amodule = klass->image->aot_module;
2245 MonoCachedClassInfo class_info;
2250 if (MONO_CLASS_IS_INTERFACE (klass) || klass->rank || !amodule)
2253 info = &amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
2256 err = decode_cached_class_info (amodule, &class_info, p, &p);
2260 for (i = 0; i < slot; ++i)
2261 decode_method_ref (amodule, &ref, p, &p);
2263 res = decode_method_ref (amodule, &ref, p, &p);
2266 if (ref.no_aot_trampoline)
2269 if (mono_metadata_token_index (ref.token) == 0 || mono_metadata_token_table (ref.token) != MONO_TABLE_METHOD)
2272 return mono_aot_get_method_from_token (domain, ref.image, ref.token);
2276 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
2278 MonoAotModule *amodule = klass->image->aot_module;
2282 if (klass->rank || !amodule)
2285 p = (guint8*)&amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
2287 err = decode_cached_class_info (amodule, res, p, &p);
2295 * mono_aot_get_class_from_name:
2297 * Obtains a MonoClass with a given namespace and a given name which is located in IMAGE,
2298 * using a cache stored in the AOT file.
2299 * Stores the resulting class in *KLASS if found, stores NULL otherwise.
2301 * Returns: TRUE if the klass was found/not found in the cache, FALSE if no aot file was
2305 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
2307 MonoAotModule *amodule = image->aot_module;
2308 guint16 *table, *entry;
2311 char full_name_buf [1024];
2313 const char *name2, *name_space2;
2315 guint32 cols [MONO_TYPEDEF_SIZE];
2316 GHashTable *nspace_table;
2318 if (!amodule || !amodule->class_name_table)
2321 amodule_lock (amodule);
2325 /* First look in the cache */
2326 if (!amodule->name_cache)
2327 amodule->name_cache = g_hash_table_new (g_str_hash, g_str_equal);
2328 nspace_table = g_hash_table_lookup (amodule->name_cache, name_space);
2330 *klass = g_hash_table_lookup (nspace_table, name);
2332 amodule_unlock (amodule);
2337 table_size = amodule->class_name_table [0];
2338 table = amodule->class_name_table + 1;
2340 if (name_space [0] == '\0')
2341 full_name = g_strdup_printf ("%s", name);
2343 if (strlen (name_space) + strlen (name) < 1000) {
2344 sprintf (full_name_buf, "%s.%s", name_space, name);
2345 full_name = full_name_buf;
2347 full_name = g_strdup_printf ("%s.%s", name_space, name);
2350 hash = mono_metadata_str_hash (full_name) % table_size;
2351 if (full_name != full_name_buf)
2354 entry = &table [hash * 2];
2356 if (entry [0] != 0) {
2357 t = &image->tables [MONO_TABLE_TYPEDEF];
2360 guint32 index = entry [0];
2361 guint32 next = entry [1];
2362 guint32 token = mono_metadata_make_token (MONO_TABLE_TYPEDEF, index);
2364 name_table_accesses ++;
2366 mono_metadata_decode_row (t, index - 1, cols, MONO_TYPEDEF_SIZE);
2368 name2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
2369 name_space2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
2371 if (!strcmp (name, name2) && !strcmp (name_space, name_space2)) {
2373 amodule_unlock (amodule);
2374 *klass = mono_class_get_checked (image, token, &error);
2375 if (!mono_error_ok (&error))
2376 mono_error_cleanup (&error); /* FIXME don't swallow the error */
2380 amodule_lock (amodule);
2381 nspace_table = g_hash_table_lookup (amodule->name_cache, name_space);
2382 if (!nspace_table) {
2383 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
2384 g_hash_table_insert (amodule->name_cache, (char*)name_space2, nspace_table);
2386 g_hash_table_insert (nspace_table, (char*)name2, *klass);
2387 amodule_unlock (amodule);
2393 entry = &table [next * 2];
2400 amodule_unlock (amodule);
2405 /* Compute the boundaries of the LLVM code for AMODULE. */
2407 compute_llvm_code_range (MonoAotModule *amodule, guint8 **code_start, guint8 **code_end)
2410 int version, fde_count;
2413 g_assert (amodule->mono_eh_frame);
2415 p = amodule->mono_eh_frame;
2417 /* p points to data emitted by LLVM in DwarfException::EmitMonoEHFrame () */
2421 g_assert (version == 3);
2424 p = ALIGN_PTR_TO (p, 4);
2426 fde_count = *(guint32*)p;
2430 if (fde_count > 0) {
2431 *code_start = amodule->methods [table [0]];
2432 *code_end = (guint8*)amodule->methods [table [(fde_count - 1) * 2]] + table [fde_count * 2];
2440 is_llvm_code (MonoAotModule *amodule, guint8 *code)
2442 if ((guint8*)code >= amodule->llvm_code_start && (guint8*)code < amodule->llvm_code_end)
2449 is_thumb_code (MonoAotModule *amodule, guint8 *code)
2451 if (is_llvm_code (amodule, code) && (amodule->info.flags & MONO_AOT_FILE_FLAG_LLVM_THUMB))
2458 * decode_llvm_mono_eh_frame:
2460 * Decode the EH information emitted by our modified LLVM compiler and construct a
2461 * MonoJitInfo structure from it.
2462 * LOCKING: Acquires the domain lock.
2465 decode_llvm_mono_eh_frame (MonoAotModule *amodule, MonoDomain *domain,
2466 MonoMethod *method, guint8 *code,
2467 MonoJitExceptionInfo *clauses, int num_clauses,
2468 MonoJitInfoFlags flags,
2470 int *this_reg, int *this_offset)
2472 guint8 *p, *code1, *code2;
2473 guint8 *fde, *cie, *code_start, *code_end;
2474 int version, fde_count;
2476 int i, pos, left, right, code_len;
2477 MonoJitExceptionInfo *ei;
2478 guint32 fde_len, ei_len, nested_len, nindex;
2479 gpointer *type_info;
2481 MonoLLVMFDEInfo info;
2483 g_assert (amodule->mono_eh_frame);
2485 p = amodule->mono_eh_frame;
2487 /* p points to data emitted by LLVM in DwarfMonoException::EmitMonoEHFrame () */
2491 g_assert (version == 3);
2493 /* func_encoding = *p; */
2495 p = ALIGN_PTR_TO (p, 4);
2497 fde_count = *(guint32*)p;
2501 /* There is +1 entry in the table */
2502 cie = p + ((fde_count + 1) * 8);
2504 /* Binary search in the table to find the entry for code */
2508 pos = (left + right) / 2;
2510 /* The table contains method index/fde offset pairs */
2511 g_assert (table [(pos * 2)] != -1);
2512 code1 = amodule->methods [table [(pos * 2)]];
2513 if (pos + 1 == fde_count) {
2514 code2 = amodule->llvm_code_end;
2516 g_assert (table [(pos + 1) * 2] != -1);
2517 code2 = amodule->methods [table [(pos + 1) * 2]];
2522 else if (code >= code2)
2528 code_start = amodule->methods [table [(pos * 2)]];
2529 if (pos + 1 == fde_count) {
2530 /* The +1 entry in the table contains the length of the last method */
2531 int len = table [(pos + 1) * 2];
2532 code_end = code_start + len;
2534 code_end = amodule->methods [table [(pos + 1) * 2]];
2536 code_len = code_end - code_start;
2538 g_assert (code >= code_start && code < code_end);
2540 if (is_thumb_code (amodule, code_start))
2541 /* Clear thumb flag */
2542 code_start = (guint8*)(((mgreg_t)code_start) & ~1);
2544 fde = amodule->mono_eh_frame + table [(pos * 2) + 1];
2545 /* This won't overflow because there is +1 entry in the table */
2546 fde_len = table [(pos * 2) + 2 + 1] - table [(pos * 2) + 1];
2548 mono_unwind_decode_llvm_mono_fde (fde, fde_len, cie, code_start, &info);
2550 ei_len = info.ex_info_len;
2551 type_info = info.type_info;
2552 *this_reg = info.this_reg;
2553 *this_offset = info.this_offset;
2555 /* Count number of nested clauses */
2557 for (i = 0; i < ei_len; ++i) {
2558 /* This might be unaligned */
2559 gint32 cindex1 = read32 (type_info [i]);
2562 for (l = nesting [cindex1]; l; l = l->next)
2567 * LLVM might represent one IL region with multiple regions, so have to
2568 * allocate a new JI.
2571 mono_domain_alloc0_lock_free (domain, mono_jit_info_size (flags, ei_len + nested_len, 0));
2572 mono_jit_info_init (jinfo, method, code, code_len, flags, ei_len + nested_len, 0);
2574 jinfo->unwind_info = mono_cache_unwind_info (info.unw_info, info.unw_info_len);
2575 /* This signals that unwind_info points to a normal cached unwind info */
2576 jinfo->from_aot = 0;
2577 jinfo->from_llvm = 1;
2579 for (i = 0; i < ei_len; ++i) {
2581 * clauses contains the original IL exception info saved by the AOT
2582 * compiler, we have to combine that with the information produced by LLVM
2584 /* The type_info entries contain IL clause indexes */
2585 int clause_index = read32 (type_info [i]);
2586 MonoJitExceptionInfo *jei = &jinfo->clauses [i];
2587 MonoJitExceptionInfo *orig_jei = &clauses [clause_index];
2589 g_assert (clause_index < num_clauses);
2590 jei->flags = orig_jei->flags;
2591 jei->data.catch_class = orig_jei->data.catch_class;
2593 jei->try_start = ei [i].try_start;
2594 jei->try_end = ei [i].try_end;
2595 jei->handler_start = ei [i].handler_start;
2596 jei->clause_index = clause_index;
2598 if (is_thumb_code (amodule, jei->try_start)) {
2599 jei->try_start = (void*)((mgreg_t)jei->try_start & ~1);
2600 jei->try_end = (void*)((mgreg_t)jei->try_end & ~1);
2601 /* Make sure we transition to thumb when a handler starts */
2602 jei->handler_start = (void*)((mgreg_t)jei->handler_start + 1);
2606 /* See exception_cb () in mini-llvm.c as to why this is needed */
2608 for (i = 0; i < ei_len; ++i) {
2609 gint32 cindex1 = read32 (type_info [i]);
2612 for (l = nesting [cindex1]; l; l = l->next) {
2613 gint32 nesting_cindex = GPOINTER_TO_INT (l->data);
2614 MonoJitExceptionInfo *nesting_ei;
2615 MonoJitExceptionInfo *nesting_clause = &clauses [nesting_cindex];
2617 nesting_ei = &jinfo->clauses [nindex];
2620 memcpy (nesting_ei, &jinfo->clauses [i], sizeof (MonoJitExceptionInfo));
2621 nesting_ei->flags = nesting_clause->flags;
2622 nesting_ei->data.catch_class = nesting_clause->data.catch_class;
2623 nesting_ei->clause_index = nesting_cindex;
2626 g_assert (nindex == ei_len + nested_len);
2632 alloc0_jit_info_data (MonoDomain *domain, int size, gboolean async_context)
2636 if (async_context) {
2637 res = mono_domain_alloc0_lock_free (domain, size);
2638 InterlockedExchangeAdd (&async_jit_info_size, size);
2640 res = mono_domain_alloc0 (domain, size);
2646 * LOCKING: Acquires the domain lock.
2647 * In async context, this is async safe.
2650 decode_exception_debug_info (MonoAotModule *amodule, MonoDomain *domain,
2651 MonoMethod *method, guint8* ex_info, guint8 *addr,
2652 guint8 *code, guint32 code_len)
2654 int i, buf_len, num_clauses, len;
2656 MonoJitInfoFlags flags = JIT_INFO_NONE;
2657 guint unwind_info, eflags;
2658 gboolean has_generic_jit_info, has_dwarf_unwind_info, has_clauses, has_seq_points, has_try_block_holes, has_arch_eh_jit_info;
2659 gboolean from_llvm, has_gc_map;
2661 int try_holes_info_size, num_holes;
2662 int this_reg = 0, this_offset = 0;
2665 /* Load the method info from the AOT file */
2666 async = mono_thread_info_is_async_context ();
2669 eflags = decode_value (p, &p);
2670 has_generic_jit_info = (eflags & 1) != 0;
2671 has_dwarf_unwind_info = (eflags & 2) != 0;
2672 has_clauses = (eflags & 4) != 0;
2673 has_seq_points = (eflags & 8) != 0;
2674 from_llvm = (eflags & 16) != 0;
2675 has_try_block_holes = (eflags & 32) != 0;
2676 has_gc_map = (eflags & 64) != 0;
2677 has_arch_eh_jit_info = (eflags & 128) != 0;
2679 if (has_dwarf_unwind_info) {
2680 unwind_info = decode_value (p, &p);
2681 g_assert (unwind_info < (1 << 30));
2683 unwind_info = decode_value (p, &p);
2685 if (has_generic_jit_info)
2686 flags |= JIT_INFO_HAS_GENERIC_JIT_INFO;
2688 if (has_try_block_holes) {
2689 num_holes = decode_value (p, &p);
2690 flags |= JIT_INFO_HAS_TRY_BLOCK_HOLES;
2691 try_holes_info_size = sizeof (MonoTryBlockHoleTableJitInfo) + num_holes * sizeof (MonoTryBlockHoleJitInfo);
2693 num_holes = try_holes_info_size = 0;
2696 if (has_arch_eh_jit_info) {
2697 flags |= JIT_INFO_HAS_ARCH_EH_INFO;
2698 /* Overwrite the original code_len which includes alignment padding */
2699 code_len = decode_value (p, &p);
2702 /* Exception table */
2704 num_clauses = decode_value (p, &p);
2709 MonoJitExceptionInfo *clauses;
2716 * Part of the info is encoded by the AOT compiler, the rest is in the .eh_frame
2719 clauses = g_new0 (MonoJitExceptionInfo, num_clauses);
2720 nesting = g_new0 (GSList*, num_clauses);
2722 for (i = 0; i < num_clauses; ++i) {
2723 MonoJitExceptionInfo *ei = &clauses [i];
2725 ei->flags = decode_value (p, &p);
2727 if (decode_value (p, &p))
2728 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
2730 /* Read the list of nesting clauses */
2732 int nesting_index = decode_value (p, &p);
2733 if (nesting_index == -1)
2735 nesting [i] = g_slist_prepend (nesting [i], GINT_TO_POINTER (nesting_index));
2739 jinfo = decode_llvm_mono_eh_frame (amodule, domain, method, code, clauses, num_clauses, flags, nesting, &this_reg, &this_offset);
2742 for (i = 0; i < num_clauses; ++i)
2743 g_slist_free (nesting [i]);
2746 len = mono_jit_info_size (flags, num_clauses, num_holes);
2747 jinfo = alloc0_jit_info_data (domain, len, async);
2748 mono_jit_info_init (jinfo, method, code, code_len, flags, num_clauses, num_holes);
2750 for (i = 0; i < jinfo->num_clauses; ++i) {
2751 MonoJitExceptionInfo *ei = &jinfo->clauses [i];
2753 ei->flags = decode_value (p, &p);
2755 #ifdef MONO_CONTEXT_SET_LLVM_EXC_REG
2756 /* Not used for catch clauses */
2757 if (ei->flags != MONO_EXCEPTION_CLAUSE_NONE)
2758 ei->exvar_offset = decode_value (p, &p);
2760 ei->exvar_offset = decode_value (p, &p);
2763 if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER || ei->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
2764 ei->data.filter = code + decode_value (p, &p);
2766 int len = decode_value (p, &p);
2772 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
2776 ei->try_start = code + decode_value (p, &p);
2777 ei->try_end = code + decode_value (p, &p);
2778 ei->handler_start = code + decode_value (p, &p);
2781 jinfo->unwind_info = unwind_info;
2782 jinfo->domain_neutral = 0;
2783 jinfo->from_aot = 1;
2786 if (has_try_block_holes) {
2787 MonoTryBlockHoleTableJitInfo *table;
2789 g_assert (jinfo->has_try_block_holes);
2791 table = mono_jit_info_get_try_block_hole_table_info (jinfo);
2794 table->num_holes = (guint16)num_holes;
2795 for (i = 0; i < num_holes; ++i) {
2796 MonoTryBlockHoleJitInfo *hole = &table->holes [i];
2797 hole->clause = decode_value (p, &p);
2798 hole->length = decode_value (p, &p);
2799 hole->offset = decode_value (p, &p);
2803 if (has_arch_eh_jit_info) {
2804 MonoArchEHJitInfo *eh_info;
2806 g_assert (jinfo->has_arch_eh_info);
2808 eh_info = mono_jit_info_get_arch_eh_info (jinfo);
2809 eh_info->stack_size = decode_value (p, &p);
2810 eh_info->epilog_size = decode_value (p, &p);
2814 /* The rest is not needed in async mode */
2815 jinfo->async = TRUE;
2816 jinfo->d.aot_info = amodule;
2821 if (has_generic_jit_info) {
2822 MonoGenericJitInfo *gi;
2825 g_assert (jinfo->has_generic_jit_info);
2827 gi = mono_jit_info_get_generic_jit_info (jinfo);
2830 gi->nlocs = decode_value (p, &p);
2832 gi->locations = alloc0_jit_info_data (domain, gi->nlocs * sizeof (MonoDwarfLocListEntry), async);
2833 for (i = 0; i < gi->nlocs; ++i) {
2834 MonoDwarfLocListEntry *entry = &gi->locations [i];
2836 entry->is_reg = decode_value (p, &p);
2837 entry->reg = decode_value (p, &p);
2839 entry->offset = decode_value (p, &p);
2841 entry->from = decode_value (p, &p);
2842 entry->to = decode_value (p, &p);
2847 gi->has_this = this_reg != -1;
2848 gi->this_reg = this_reg;
2849 gi->this_offset = this_offset;
2851 gi->has_this = decode_value (p, &p);
2852 gi->this_reg = decode_value (p, &p);
2853 gi->this_offset = decode_value (p, &p);
2857 len = decode_value (p, &p);
2861 jinfo->d.method = decode_resolve_method_ref (amodule, p, &p);
2863 gi->generic_sharing_context = g_new0 (MonoGenericSharingContext, 1);
2864 if (decode_value (p, &p)) {
2866 MonoGenericSharingContext *gsctx = gi->generic_sharing_context;
2868 gsctx->is_gsharedvt = TRUE;
2872 if (method && has_seq_points) {
2873 MonoSeqPointInfo *seq_points;
2875 p += mono_seq_point_info_read (&seq_points, p, FALSE);
2877 mono_domain_lock (domain);
2878 g_hash_table_insert (domain_jit_info (domain)->seq_points, method, seq_points);
2879 mono_domain_unlock (domain);
2882 /* Load debug info */
2883 buf_len = decode_value (p, &p);
2885 mono_debug_add_aot_method (domain, method, code, p, buf_len);
2889 int map_size = decode_value (p, &p);
2890 /* The GC map requires 4 bytes of alignment */
2891 while ((guint64)(gsize)p % 4)
2897 if (amodule != jinfo->d.method->klass->image->aot_module) {
2900 ji_to_amodule = g_hash_table_new (NULL, NULL);
2901 g_hash_table_insert (ji_to_amodule, jinfo, amodule);
2909 amodule_contains_code_addr (MonoAotModule *amodule, guint8 *code)
2911 return (code >= amodule->jit_code_start && code <= amodule->jit_code_end) ||
2912 (code >= amodule->llvm_code_start && code <= amodule->llvm_code_end);
2916 * mono_aot_get_unwind_info:
2918 * Return a pointer to the DWARF unwind info belonging to JI.
2921 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
2923 MonoAotModule *amodule;
2925 guint8 *code = ji->code_start;
2928 amodule = ji->d.aot_info;
2930 amodule = jinfo_get_method (ji)->klass->image->aot_module;
2932 g_assert (ji->from_aot);
2934 if (!amodule_contains_code_addr (amodule, code)) {
2935 /* ji belongs to a different aot module than amodule */
2937 g_assert (ji_to_amodule);
2938 amodule = g_hash_table_lookup (ji_to_amodule, ji);
2940 g_assert (amodule_contains_code_addr (amodule, code));
2944 p = amodule->unwind_info + ji->unwind_info;
2945 *unwind_info_len = decode_value (p, &p);
2950 msort_method_addresses_internal (gpointer *array, int *indexes, int lo, int hi, gpointer *scratch, int *scratch_indexes)
2952 int mid = (lo + hi) / 2;
2959 for (i = lo; i < hi; ++i)
2960 if (array [i] > array [i + 1])
2963 /* Already sorted */
2967 msort_method_addresses_internal (array, indexes, lo, mid, scratch, scratch_indexes);
2968 msort_method_addresses_internal (array, indexes, mid + 1, hi, scratch, scratch_indexes);
2970 if (array [mid] < array [mid + 1])
2976 for (i = lo; i <= hi; i ++) {
2977 if (t_lo <= mid && ((t_hi > hi) || array [t_lo] < array [t_hi])) {
2978 scratch [i] = array [t_lo];
2979 scratch_indexes [i] = indexes [t_lo];
2982 scratch [i] = array [t_hi];
2983 scratch_indexes [i] = indexes [t_hi];
2987 for (i = lo; i <= hi; ++i) {
2988 array [i] = scratch [i];
2989 indexes [i] = scratch_indexes [i];
2994 msort_method_addresses (gpointer *array, int *indexes, int len)
2997 int *scratch_indexes;
2999 scratch = g_new (gpointer, len);
3000 scratch_indexes = g_new (int, len);
3001 msort_method_addresses_internal (array, indexes, 0, len - 1, scratch, scratch_indexes);
3003 g_free (scratch_indexes);
3007 * mono_aot_find_jit_info:
3009 * In async context, the resulting MonoJitInfo will not have its method field set, and it will not be added
3010 * to the jit info tables.
3011 * FIXME: Large sizes in the lock free allocator
3014 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
3016 int pos, left, right, code_len;
3017 int method_index, table_len;
3019 MonoAotModule *amodule = image->aot_module;
3020 MonoMethod *method = NULL;
3022 guint8 *code, *ex_info, *p;
3026 guint8 *code1, *code2;
3033 nmethods = amodule->info.nmethods;
3035 if (domain != mono_get_root_domain ())
3039 if (!amodule_contains_code_addr (amodule, addr))
3042 async = mono_thread_info_is_async_context ();
3044 /* Compute a sorted table mapping code to method indexes. */
3045 if (!amodule->sorted_methods) {
3047 gpointer *methods = g_new0 (gpointer, nmethods);
3048 int *method_indexes = g_new0 (int, nmethods);
3049 int methods_len = 0;
3051 for (i = 0; i < nmethods; ++i) {
3052 /* Skip the -1 entries to speed up sorting */
3053 if (amodule->methods [i] == GINT_TO_POINTER (-1))
3055 methods [methods_len] = amodule->methods [i];
3056 method_indexes [methods_len] = i;
3059 /* Use a merge sort as this is mostly sorted */
3060 msort_method_addresses (methods, method_indexes, methods_len);
3061 for (i = 0; i < methods_len -1; ++i)
3062 g_assert (methods [i] <= methods [i + 1]);
3063 amodule->sorted_methods_len = methods_len;
3064 if (InterlockedCompareExchangePointer ((gpointer*)&amodule->sorted_methods, methods, NULL) != NULL)
3065 /* Somebody got in before us */
3067 if (InterlockedCompareExchangePointer ((gpointer*)&amodule->sorted_method_indexes, method_indexes, NULL) != NULL)
3068 /* Somebody got in before us */
3069 g_free (method_indexes);
3072 /* Binary search in the sorted_methods table */
3073 methods = amodule->sorted_methods;
3074 methods_len = amodule->sorted_methods_len;
3077 right = methods_len;
3079 pos = (left + right) / 2;
3081 code1 = methods [pos];
3082 if (pos + 1 == methods_len) {
3083 if (code1 >= amodule->jit_code_start && code1 < amodule->jit_code_end)
3084 code2 = amodule->jit_code_end;
3086 code2 = amodule->llvm_code_end;
3088 code2 = methods [pos + 1];
3093 else if (code >= code2)
3099 g_assert (addr >= methods [pos]);
3100 if (pos + 1 < methods_len)
3101 g_assert (addr < methods [pos + 1]);
3102 method_index = amodule->sorted_method_indexes [pos];
3104 /* In async mode, jinfo is not added to the normal jit info table, so have to cache it ourselves */
3106 JitInfoMap *table = amodule->async_jit_info_table;
3110 len = table [0].method_index;
3111 for (i = 1; i < len; ++i) {
3112 if (table [i].method_index == method_index)
3113 return table [i].jinfo;
3118 code = amodule->methods [method_index];
3119 ex_info = &amodule->blob [mono_aot_get_offset (amodule->ex_info_offsets, method_index)];
3121 if (pos == methods_len - 1) {
3122 if (code >= amodule->jit_code_start && code < amodule->jit_code_end)
3123 code_len = amodule->jit_code_end - code;
3125 code_len = amodule->llvm_code_end - code;
3127 code_len = (guint8*)methods [pos + 1] - (guint8*)methods [pos];
3130 g_assert ((guint8*)code <= (guint8*)addr && (guint8*)addr < (guint8*)code + code_len);
3132 /* Might be a wrapper/extra method */
3134 if (amodule->extra_methods) {
3135 amodule_lock (amodule);
3136 method = g_hash_table_lookup (amodule->extra_methods, GUINT_TO_POINTER (method_index));
3137 amodule_unlock (amodule);
3143 if (method_index >= image->tables [MONO_TABLE_METHOD].rows) {
3145 * This is hit for extra methods which are called directly, so they are
3146 * not in amodule->extra_methods.
3148 table_len = amodule->extra_method_info_offsets [0];
3149 table = amodule->extra_method_info_offsets + 1;
3156 pos = ((left + right) / 2);
3158 g_assert (pos < table_len);
3160 if (table [pos * 2] < method_index)
3162 else if (table [pos * 2] > method_index)
3168 p = amodule->blob + table [(pos * 2) + 1];
3169 method = decode_resolve_method_ref (amodule, p, &p);
3171 /* Happens when a random address is passed in which matches a not-yey called wrapper encoded using its name */
3174 token = mono_metadata_make_token (MONO_TABLE_METHOD, method_index + 1);
3175 method = mono_get_method (image, token, NULL);
3182 //printf ("F: %s\n", mono_method_full_name (method, TRUE));
3184 jinfo = decode_exception_debug_info (amodule, domain, method, ex_info, addr, code, code_len);
3186 g_assert ((guint8*)addr >= (guint8*)jinfo->code_start);
3188 /* Add it to the normal JitInfo tables */
3190 JitInfoMap *old_table, *new_table;
3194 * Use a simple inmutable table with linear search to cache async jit info entries.
3195 * This assumes that the number of entries is small.
3198 /* Copy the table, adding a new entry at the end */
3199 old_table = amodule->async_jit_info_table;
3201 len = old_table[0].method_index;
3204 new_table = alloc0_jit_info_data (domain, (len + 1) * sizeof (JitInfoMap), async);
3206 memcpy (new_table, old_table, len * sizeof (JitInfoMap));
3207 new_table [0].method_index = len + 1;
3208 new_table [len].method_index = method_index;
3209 new_table [len].jinfo = jinfo;
3211 mono_memory_barrier ();
3212 if (InterlockedCompareExchangePointer ((gpointer)&amodule->async_jit_info_table, new_table, old_table) == old_table)
3216 mono_jit_info_table_add (domain, jinfo);
3219 if ((guint8*)addr >= (guint8*)jinfo->code_start + jinfo->code_size)
3220 /* addr is in the padding between methods, see the adjustment of code_size in decode_exception_debug_info () */
3227 decode_patch (MonoAotModule *aot_module, MonoMemPool *mp, MonoJumpInfo *ji, guint8 *buf, guint8 **endbuf)
3235 case MONO_PATCH_INFO_METHOD:
3236 case MONO_PATCH_INFO_METHOD_JUMP:
3237 case MONO_PATCH_INFO_ICALL_ADDR:
3238 case MONO_PATCH_INFO_METHOD_RGCTX:
3239 case MONO_PATCH_INFO_METHOD_CODE_SLOT: {
3243 res = decode_method_ref (aot_module, &ref, p, &p);
3247 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)) {
3248 ji->data.target = mono_create_ftnptr (mono_domain_get (), mono_create_jit_trampoline_from_token (ref.image, ref.token));
3249 ji->type = MONO_PATCH_INFO_ABS;
3253 ji->data.method = ref.method;
3255 ji->data.method = mono_get_method (ref.image, ref.token, NULL);
3256 g_assert (ji->data.method);
3257 mono_class_init (ji->data.method->klass);
3261 case MONO_PATCH_INFO_INTERNAL_METHOD:
3262 case MONO_PATCH_INFO_JIT_ICALL_ADDR: {
3263 guint32 len = decode_value (p, &p);
3265 ji->data.name = (char*)p;
3269 case MONO_PATCH_INFO_METHODCONST:
3271 ji->data.method = decode_resolve_method_ref (aot_module, p, &p);
3272 if (!ji->data.method)
3275 case MONO_PATCH_INFO_VTABLE:
3276 case MONO_PATCH_INFO_CLASS:
3277 case MONO_PATCH_INFO_IID:
3278 case MONO_PATCH_INFO_ADJUSTED_IID:
3280 ji->data.klass = decode_klass_ref (aot_module, p, &p);
3281 if (!ji->data.klass)
3284 case MONO_PATCH_INFO_DELEGATE_TRAMPOLINE:
3285 ji->data.del_tramp = mono_mempool_alloc0 (mp, sizeof (MonoDelegateClassMethodPair));
3286 ji->data.del_tramp->klass = decode_klass_ref (aot_module, p, &p);
3287 if (!ji->data.del_tramp->klass)
3289 if (decode_value (p, &p)) {
3290 ji->data.del_tramp->method = decode_resolve_method_ref (aot_module, p, &p);
3291 if (!ji->data.del_tramp->method)
3294 ji->data.del_tramp->virtual = decode_value (p, &p) ? TRUE : FALSE;
3296 case MONO_PATCH_INFO_IMAGE:
3297 ji->data.image = load_image (aot_module, decode_value (p, &p), TRUE);
3298 if (!ji->data.image)
3301 case MONO_PATCH_INFO_FIELD:
3302 case MONO_PATCH_INFO_SFLDA:
3304 ji->data.field = decode_field_info (aot_module, p, &p);
3305 if (!ji->data.field)
3308 case MONO_PATCH_INFO_SWITCH:
3309 ji->data.table = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoBBTable));
3310 ji->data.table->table_size = decode_value (p, &p);
3311 table = mono_domain_alloc (mono_domain_get (), sizeof (gpointer) * ji->data.table->table_size);
3312 ji->data.table->table = (MonoBasicBlock**)table;
3313 for (i = 0; i < ji->data.table->table_size; i++)
3314 table [i] = (gpointer)(gssize)decode_value (p, &p);
3316 case MONO_PATCH_INFO_R4: {
3319 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (float));
3320 val = decode_value (p, &p);
3321 *(float*)ji->data.target = *(float*)&val;
3324 case MONO_PATCH_INFO_R8: {
3328 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (double));
3330 val [0] = decode_value (p, &p);
3331 val [1] = decode_value (p, &p);
3332 v = ((guint64)val [1] << 32) | ((guint64)val [0]);
3333 *(double*)ji->data.target = *(double*)&v;
3336 case MONO_PATCH_INFO_LDSTR:
3337 image = load_image (aot_module, decode_value (p, &p), TRUE);
3340 ji->data.token = mono_jump_info_token_new (mp, image, MONO_TOKEN_STRING + decode_value (p, &p));
3342 case MONO_PATCH_INFO_RVA:
3343 case MONO_PATCH_INFO_DECLSEC:
3344 case MONO_PATCH_INFO_LDTOKEN:
3345 case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
3347 image = load_image (aot_module, decode_value (p, &p), TRUE);
3350 ji->data.token = mono_jump_info_token_new (mp, image, decode_value (p, &p));
3352 ji->data.token->has_context = decode_value (p, &p);
3353 if (ji->data.token->has_context) {
3354 gboolean res = decode_generic_context (aot_module, &ji->data.token->context, p, &p);
3359 case MONO_PATCH_INFO_EXC_NAME:
3360 ji->data.klass = decode_klass_ref (aot_module, p, &p);
3361 if (!ji->data.klass)
3363 ji->data.name = ji->data.klass->name;
3365 case MONO_PATCH_INFO_METHOD_REL:
3366 ji->data.offset = decode_value (p, &p);
3368 case MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG:
3369 case MONO_PATCH_INFO_GC_CARD_TABLE_ADDR:
3370 case MONO_PATCH_INFO_GC_NURSERY_START:
3371 case MONO_PATCH_INFO_JIT_TLS_ID:
3373 case MONO_PATCH_INFO_CASTCLASS_CACHE:
3374 ji->data.index = decode_value (p, &p);
3376 case MONO_PATCH_INFO_RGCTX_FETCH: {
3378 MonoJumpInfoRgctxEntry *entry;
3379 guint32 offset, val;
3382 offset = decode_value (p, &p);
3383 val = decode_value (p, &p);
3385 entry = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
3386 p2 = aot_module->blob + offset;
3387 entry->method = decode_resolve_method_ref (aot_module, p2, &p2);
3388 entry->in_mrgctx = ((val & 1) > 0) ? TRUE : FALSE;
3389 entry->info_type = (val >> 1) & 0xff;
3390 entry->data = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
3391 entry->data->type = (val >> 9) & 0xff;
3393 res = decode_patch (aot_module, mp, entry->data, p, &p);
3396 ji->data.rgctx_entry = entry;
3399 case MONO_PATCH_INFO_SEQ_POINT_INFO:
3401 case MONO_PATCH_INFO_LLVM_IMT_TRAMPOLINE: {
3402 MonoJumpInfoImtTramp *imt_tramp = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoImtTramp));
3404 imt_tramp->method = decode_resolve_method_ref (aot_module, p, &p);
3405 imt_tramp->vt_offset = decode_value (p, &p);
3407 ji->data.imt_tramp = imt_tramp;
3410 case MONO_PATCH_INFO_SIGNATURE:
3411 ji->data.target = decode_signature (aot_module, p, &p);
3413 case MONO_PATCH_INFO_TLS_OFFSET:
3414 ji->data.target = GINT_TO_POINTER (decode_value (p, &p));
3416 case MONO_PATCH_INFO_GSHAREDVT_CALL: {
3417 MonoJumpInfoGSharedVtCall *info = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoGSharedVtCall));
3418 info->sig = decode_signature (aot_module, p, &p);
3419 g_assert (info->sig);
3420 info->method = decode_resolve_method_ref (aot_module, p, &p);
3421 g_assert (info->method);
3423 ji->data.target = info;
3426 case MONO_PATCH_INFO_GSHAREDVT_METHOD: {
3427 MonoGSharedVtMethodInfo *info = mono_mempool_alloc0 (mp, sizeof (MonoGSharedVtMethodInfo));
3430 info->method = decode_resolve_method_ref (aot_module, p, &p);
3431 g_assert (info->method);
3432 info->num_entries = decode_value (p, &p);
3433 info->count_entries = info->num_entries;
3434 info->entries = mono_mempool_alloc0 (mp, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->num_entries);
3435 for (i = 0; i < info->num_entries; ++i) {
3436 MonoRuntimeGenericContextInfoTemplate *template = &info->entries [i];
3438 template->info_type = decode_value (p, &p);
3439 switch (mini_rgctx_info_type_to_patch_info_type (template->info_type)) {
3440 case MONO_PATCH_INFO_CLASS: {
3441 MonoClass *klass = decode_klass_ref (aot_module, p, &p);
3444 template->data = &klass->byval_arg;
3447 case MONO_PATCH_INFO_FIELD:
3448 template->data = decode_field_info (aot_module, p, &p);
3449 if (!template->data)
3453 g_assert_not_reached ();
3457 ji->data.target = info;
3460 case MONO_PATCH_INFO_LDSTR_LIT: {
3461 int len = decode_value (p, &p);
3464 s = mono_mempool_alloc0 (mp, len + 1);
3465 memcpy (s, p, len + 1);
3468 ji->data.target = s;
3471 case MONO_PATCH_INFO_VIRT_METHOD: {
3472 MonoJumpInfoVirtMethod *info = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoVirtMethod));
3474 info->klass = decode_klass_ref (aot_module, p, &p);
3475 g_assert (info->klass);
3476 info->method = decode_resolve_method_ref (aot_module, p, &p);
3477 g_assert (info->method);
3479 ji->data.target = info;
3482 case MONO_PATCH_INFO_GC_SAFE_POINT_FLAG:
3485 g_warning ("unhandled type %d", ji->type);
3486 g_assert_not_reached ();
3497 static MonoJumpInfo*
3498 load_patch_info (MonoAotModule *aot_module, MonoMemPool *mp, int n_patches,
3499 gboolean llvm, guint32 **got_slots,
3500 guint8 *buf, guint8 **endbuf)
3502 MonoJumpInfo *patches;
3506 guint32 *got_offsets;
3511 got = aot_module->llvm_got;
3512 got_offsets = aot_module->info.llvm_got_info_offsets;
3514 got = aot_module->got;
3515 got_offsets = aot_module->info.got_info_offsets;
3518 patches = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo) * n_patches);
3520 *got_slots = g_malloc (sizeof (guint32) * n_patches);
3522 for (pindex = 0; pindex < n_patches; ++pindex) {
3523 MonoJumpInfo *ji = &patches [pindex];
3528 got_offset = decode_value (p, &p);
3530 shared_p = aot_module->blob + mono_aot_get_offset (got_offsets, got_offset);
3532 ji->type = decode_value (shared_p, &shared_p);
3534 /* See load_method () for SFLDA */
3535 if (got [got_offset] && ji->type != MONO_PATCH_INFO_SFLDA) {
3536 /* Already loaded */
3538 res = decode_patch (aot_module, mp, ji, shared_p, &shared_p);
3543 (*got_slots) [pindex] = got_offset;
3550 g_free (*got_slots);
3557 register_jump_target_got_slot (MonoDomain *domain, MonoMethod *method, gpointer *got_slot)
3560 * Jump addresses cannot be patched by the trampoline code since it
3561 * does not have access to the caller's address. Instead, we collect
3562 * the addresses of the GOT slots pointing to a method, and patch
3563 * them after the method has been compiled.
3565 MonoJitDomainInfo *info = domain_jit_info (domain);
3568 mono_domain_lock (domain);
3569 if (!info->jump_target_got_slot_hash)
3570 info->jump_target_got_slot_hash = g_hash_table_new (NULL, NULL);
3571 list = g_hash_table_lookup (info->jump_target_got_slot_hash, method);
3572 list = g_slist_prepend (list, got_slot);
3573 g_hash_table_insert (info->jump_target_got_slot_hash, method, list);
3574 mono_domain_unlock (domain);
3580 * Load the method identified by METHOD_INDEX from the AOT image. Return a
3581 * pointer to the native code of the method, or NULL if not found.
3582 * METHOD might not be set if the caller only has the image/token info.
3585 load_method (MonoDomain *domain, MonoAotModule *amodule, MonoImage *image, MonoMethod *method, guint32 token, int method_index)
3588 gboolean from_plt = method == NULL;
3589 MonoJitInfo *jinfo = NULL;
3590 guint8 *code = NULL, *info;
3593 if (mono_profiler_get_events () & MONO_PROFILE_ENTER_LEAVE) {
3595 /* The caller cannot handle this */
3596 g_assert_not_reached ();
3600 if (domain != mono_get_root_domain ())
3601 /* Non shared AOT code can't be used in other appdomains */
3604 if (amodule->out_of_date)
3608 if (amodule->methods [method_index] == GINT_TO_POINTER (-1)) {
3609 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
3613 method = mono_get_method (image, token, NULL);
3614 full_name = mono_method_full_name (method, TRUE);
3615 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT: NOT FOUND: %s.", full_name);
3622 code = amodule->methods [method_index];
3624 info = &amodule->blob [mono_aot_get_offset (amodule->method_info_offsets, method_index)];
3626 if (!amodule->methods_loaded) {
3627 amodule_lock (amodule);
3628 if (!amodule->methods_loaded) {
3631 loaded = g_new0 (guint32, amodule->info.nmethods / 32 + 1);
3632 mono_memory_barrier ();
3633 amodule->methods_loaded = loaded;
3635 amodule_unlock (amodule);
3638 if ((amodule->methods_loaded [method_index / 32] >> (method_index % 32)) & 0x1)
3641 if (mono_last_aot_method != -1) {
3642 if (mono_jit_stats.methods_aot >= mono_last_aot_method)
3644 else if (mono_jit_stats.methods_aot == mono_last_aot_method - 1) {
3646 method = mono_get_method (image, token, NULL);
3648 char *name = mono_method_full_name (method, TRUE);
3649 g_print ("LAST AOT METHOD: %s.\n", name);
3652 g_print ("LAST AOT METHOD: %p %d\n", code, method_index);
3657 res = init_method (amodule, method_index, method, &klass);
3661 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
3665 method = mono_get_method (image, token, NULL);
3667 full_name = mono_method_full_name (method, TRUE);
3670 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
3672 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT: FOUND method %s [%p - %p %p]", full_name, code, code + jinfo->code_size, info);
3676 amodule_lock (amodule);
3678 InterlockedIncrement (&mono_jit_stats.methods_aot);
3680 amodule->methods_loaded [method_index / 32] |= 1 << (method_index % 32);
3684 if (method && method->wrapper_type)
3685 g_hash_table_insert (amodule->method_to_code, method, code);
3687 amodule_unlock (amodule);
3689 if (mono_profiler_get_events () & MONO_PROFILE_JIT_COMPILATION) {
3693 method = mono_get_method (amodule->assembly->image, token, NULL);
3696 mono_profiler_method_jit (method);
3697 jinfo = mono_jit_info_table_find (domain, (char*)code);
3699 mono_profiler_method_end_jit (method, jinfo, MONO_PROFILE_OK);
3702 if (from_plt && klass && !klass->generic_container)
3703 mono_runtime_class_init (mono_class_vtable (domain, klass));
3715 find_aot_method_in_amodule (MonoAotModule *amodule, MonoMethod *method, guint32 hash_full)
3717 guint32 table_size, entry_size, hash;
3718 guint32 *table, *entry;
3720 static guint32 n_extra_decodes;
3722 if (!amodule || amodule->out_of_date)
3725 table_size = amodule->extra_method_table [0];
3726 hash = hash_full % table_size;
3727 table = amodule->extra_method_table + 1;
3730 entry = &table [hash * entry_size];
3737 guint32 key = entry [0];
3738 guint32 value = entry [1];
3739 guint32 next = entry [entry_size - 1];
3743 p = amodule->blob + key;
3746 amodule_lock (amodule);
3747 if (!amodule->method_ref_to_method)
3748 amodule->method_ref_to_method = g_hash_table_new (NULL, NULL);
3749 m = g_hash_table_lookup (amodule->method_ref_to_method, p);
3750 amodule_unlock (amodule);
3752 m = decode_resolve_method_ref_with_target (amodule, method, p, &p);
3754 * Can't catche runtime invoke wrappers since it would break
3755 * the check in decode_method_ref_with_target ().
3757 if (m && m->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE) {
3758 amodule_lock (amodule);
3759 g_hash_table_insert (amodule->method_ref_to_method, orig_p, m);
3760 amodule_unlock (amodule);
3768 /* Special case: wrappers of shared generic methods */
3769 if (m && method->wrapper_type && m->wrapper_type == m->wrapper_type &&
3770 method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
3771 MonoMethod *w1 = mono_marshal_method_from_wrapper (method);
3772 MonoMethod *w2 = mono_marshal_method_from_wrapper (m);
3774 if (w1->is_inflated && ((MonoMethodInflated *)w1)->declaring == w2) {
3780 /* Methods decoded needlessly */
3782 //printf ("%d %s %s %p\n", n_extra_decodes, mono_method_full_name (method, TRUE), mono_method_full_name (m, TRUE), orig_p);
3787 entry = &table [next * entry_size];
3796 add_module_cb (gpointer key, gpointer value, gpointer user_data)
3798 g_ptr_array_add ((GPtrArray*)user_data, value);
3804 * Try finding METHOD in the extra_method table in all AOT images.
3805 * Return its method index, or 0xffffff if not found. Set OUT_AMODULE to the AOT
3806 * module where the method was found.
3809 find_aot_method (MonoMethod *method, MonoAotModule **out_amodule)
3814 guint32 hash = mono_aot_method_hash (method);
3816 /* Try the method's module first */
3817 *out_amodule = method->klass->image->aot_module;
3818 index = find_aot_method_in_amodule (method->klass->image->aot_module, method, hash);
3819 if (index != 0xffffff)
3823 * Try all other modules.
3824 * This is needed because generic instances klass->image points to the image
3825 * containing the generic definition, but the native code is generated to the
3826 * AOT image which contains the reference.
3829 /* Make a copy to avoid doing the search inside the aot lock */
3830 modules = g_ptr_array_new ();
3832 g_hash_table_foreach (aot_modules, add_module_cb, modules);
3836 for (i = 0; i < modules->len; ++i) {
3837 MonoAotModule *amodule = g_ptr_array_index (modules, i);
3839 if (amodule != method->klass->image->aot_module)
3840 index = find_aot_method_in_amodule (amodule, method, hash);
3841 if (index != 0xffffff) {
3842 *out_amodule = amodule;
3847 g_ptr_array_free (modules, TRUE);
3853 mono_aot_find_method_index (MonoMethod *method)
3855 MonoAotModule *out_amodule;
3856 return find_aot_method (method, &out_amodule);
3860 init_method (MonoAotModule *amodule, guint32 method_index, MonoMethod *method, MonoClass **klass)
3862 MonoDomain *domain = mono_domain_get ();
3864 int pindex, n_patches;
3866 MonoJitInfo *jinfo = NULL;
3867 guint8 *code, *info;
3869 code = amodule->methods [method_index];
3870 info = &amodule->blob [mono_aot_get_offset (amodule->method_info_offsets, method_index)];
3875 *klass = method->klass;
3876 decode_klass_ref (amodule, p, &p);
3878 *klass = decode_klass_ref (amodule, p, &p);
3881 n_patches = decode_value (p, &p);
3884 MonoJumpInfo *patches;
3889 mp = mono_mempool_new ();
3891 if ((gpointer)code >= amodule->info.jit_code_start && (gpointer)code <= amodule->info.jit_code_end) {
3896 got = amodule->llvm_got;
3900 patches = load_patch_info (amodule, mp, n_patches, llvm, &got_slots, p, &p);
3901 if (patches == NULL)
3904 for (pindex = 0; pindex < n_patches; ++pindex) {
3905 MonoJumpInfo *ji = &patches [pindex];
3909 * For SFLDA, we need to call resolve_patch_target () since the GOT slot could have
3910 * been initialized by load_method () for a static cctor before the cctor has
3911 * finished executing (#23242).
3913 if (!got [got_slots [pindex]] || ji->type == MONO_PATCH_INFO_SFLDA) {
3914 addr = mono_resolve_patch_target (method, domain, code, ji, TRUE);
3915 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
3916 addr = mono_create_ftnptr (domain, addr);
3917 mono_memory_barrier ();
3918 got [got_slots [pindex]] = addr;
3919 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
3920 register_jump_target_got_slot (domain, ji->data.method, &(got [got_slots [pindex]]));
3922 ji->type = MONO_PATCH_INFO_NONE;
3927 mono_mempool_destroy (mp);
3930 if (mini_get_debug_options ()->load_aot_jit_info_eagerly)
3931 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
3943 * mono_aot_get_method:
3945 * Return a pointer to the AOTed native code for METHOD if it can be found,
3947 * On platforms with function pointers, this doesn't return a function pointer.
3950 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
3952 MonoClass *klass = method->klass;
3953 guint32 method_index;
3954 MonoAotModule *amodule = klass->image->aot_module;
3957 if (enable_aot_cache && !amodule && domain->entry_assembly && klass->image == mono_defaults.corlib) {
3958 /* This cannot be AOTed during startup, so do it now */
3959 if (!mscorlib_aot_loaded) {
3960 mscorlib_aot_loaded = TRUE;
3961 load_aot_module (klass->image->assembly, NULL);
3962 amodule = klass->image->aot_module;
3969 if (amodule->out_of_date)
3972 if ((method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
3973 (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
3974 (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
3975 (method->flags & METHOD_ATTRIBUTE_ABSTRACT))
3979 * Use the original method instead of its invoke-with-check wrapper.
3980 * This is not a problem when using full-aot, since it doesn't support
3983 if (mono_aot_only && method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)
3984 return mono_aot_get_method (domain, mono_marshal_method_from_wrapper (method));
3986 g_assert (klass->inited);
3988 /* Find method index */
3989 method_index = 0xffffff;
3990 if (method->is_inflated && !method->wrapper_type && mono_method_is_generic_sharable_full (method, TRUE, FALSE, FALSE)) {
3992 * For generic methods, we store the fully shared instance in place of the
3995 method = mono_method_get_declaring_generic_method (method);
3996 method_index = mono_metadata_token_index (method->token) - 1;
3997 } else if (method->is_inflated || !method->token) {
3998 /* This hash table is used to avoid the slower search in the extra_method_table in the AOT image */
3999 amodule_lock (amodule);
4000 code = g_hash_table_lookup (amodule->method_to_code, method);
4001 amodule_unlock (amodule);
4005 method_index = find_aot_method (method, &amodule);
4007 * Special case the ICollection<T> wrappers for arrays, as they cannot
4008 * be statically enumerated, and each wrapper ends up calling the same
4011 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED && method->klass->rank && strstr (method->name, "System.Collections.Generic")) {
4012 MonoMethod *m = mono_aot_get_array_helper_from_wrapper (method);
4014 code = mono_aot_get_method (domain, m);
4020 * Special case Array.GetGenericValueImpl which is a generic icall.
4021 * Generic sharing currently can't handle it, but the icall returns data using
4022 * an out parameter, so the managed-to-native wrappers can share the same code.
4024 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass == mono_defaults.array_class && !strcmp (method->name, "GetGenericValueImpl")) {
4027 MonoGenericContext ctx;
4028 MonoType *args [16];
4030 if (mono_method_signature (method)->params [1]->type == MONO_TYPE_OBJECT)
4031 /* Avoid recursion */
4034 m = mono_class_get_method_from_name (mono_defaults.array_class, "GetGenericValueImpl", 2);
4037 memset (&ctx, 0, sizeof (ctx));
4038 args [0] = &mono_defaults.object_class->byval_arg;
4039 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
4041 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method_checked (m, &ctx, &error), TRUE, TRUE);
4042 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
4045 * Get the code for the <object> instantiation which should be emitted into
4046 * the mscorlib aot image by the AOT compiler.
4048 code = mono_aot_get_method (domain, m);
4053 /* Same for CompareExchange<T> and Exchange<T> */
4054 /* Same for Volatile.Read<T>/Write<T> */
4055 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass->image == mono_defaults.corlib &&
4056 ((!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])) ||
4057 (!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))) ||
4058 (!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]))))) {
4061 MonoGenericContext ctx;
4062 MonoType *args [16];
4063 gpointer iter = NULL;
4065 while ((m = mono_class_get_methods (method->klass, &iter))) {
4066 if (mono_method_signature (m)->generic_param_count && !strcmp (m->name, method->name))
4071 memset (&ctx, 0, sizeof (ctx));
4072 args [0] = &mono_defaults.object_class->byval_arg;
4073 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
4075 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method_checked (m, &ctx, &error), TRUE, TRUE);
4076 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
4078 /* Avoid recursion */
4083 * Get the code for the <object> instantiation which should be emitted into
4084 * the mscorlib aot image by the AOT compiler.
4086 code = mono_aot_get_method (domain, m);
4091 if (method_index == 0xffffff && method->is_inflated && mono_method_is_generic_sharable_full (method, FALSE, TRUE, FALSE)) {
4092 /* Partial sharing */
4095 shared = mini_get_shared_method (method);
4096 method_index = find_aot_method (shared, &amodule);
4097 if (method_index != 0xffffff)
4101 if (method_index == 0xffffff && method->is_inflated && mono_method_is_generic_sharable_full (method, FALSE, FALSE, TRUE)) {
4103 /* Use the all-vt shared method since this is what was AOTed */
4104 method_index = find_aot_method (mini_get_shared_method_full (method, TRUE, TRUE), &amodule);
4105 if (method_index != 0xffffff)
4106 method = mini_get_shared_method_full (method, TRUE, FALSE);
4109 if (method_index == 0xffffff) {
4110 if (mono_aot_only && mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
4113 full_name = mono_method_full_name (method, TRUE);
4114 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.", full_name);
4120 if (method_index == 0xffffff)
4123 /* Needed by find_jit_info */
4124 amodule_lock (amodule);
4125 if (!amodule->extra_methods)
4126 amodule->extra_methods = g_hash_table_new (NULL, NULL);
4127 g_hash_table_insert (amodule->extra_methods, GUINT_TO_POINTER (method_index), method);
4128 amodule_unlock (amodule);
4131 method_index = mono_metadata_token_index (method->token) - 1;
4134 return load_method (domain, amodule, klass->image, method, method->token, method_index);
4138 * Same as mono_aot_get_method, but we try to avoid loading any metadata from the
4142 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
4144 MonoAotModule *aot_module = image->aot_module;
4150 method_index = mono_metadata_token_index (token) - 1;
4152 return load_method (domain, aot_module, image, NULL, token, method_index);
4158 } IsGotEntryUserData;
4161 check_is_got_entry (gpointer key, gpointer value, gpointer user_data)
4163 IsGotEntryUserData *data = (IsGotEntryUserData*)user_data;
4164 MonoAotModule *aot_module = (MonoAotModule*)value;
4166 if (aot_module->got && (data->addr >= (guint8*)(aot_module->got)) && (data->addr < (guint8*)(aot_module->got + aot_module->info.got_size)))
4171 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
4173 IsGotEntryUserData user_data;
4178 user_data.addr = addr;
4179 user_data.res = FALSE;
4181 g_hash_table_foreach (aot_modules, check_is_got_entry, &user_data);
4184 return user_data.res;
4189 MonoAotModule *module;
4190 } FindAotModuleUserData;
4193 find_aot_module_cb (gpointer key, gpointer value, gpointer user_data)
4195 FindAotModuleUserData *data = (FindAotModuleUserData*)user_data;
4196 MonoAotModule *aot_module = (MonoAotModule*)value;
4198 if (amodule_contains_code_addr (aot_module, data->addr))
4199 data->module = aot_module;
4202 static inline MonoAotModule*
4203 find_aot_module (guint8 *code)
4205 FindAotModuleUserData user_data;
4210 /* Reading these need no locking */
4211 if (((gsize)code < aot_code_low_addr) || ((gsize)code > aot_code_high_addr))
4214 user_data.addr = code;
4215 user_data.module = NULL;
4218 g_hash_table_foreach (aot_modules, find_aot_module_cb, &user_data);
4221 return user_data.module;
4225 mono_aot_patch_plt_entry (guint8 *code, guint8 *plt_entry, gpointer *got, mgreg_t *regs, guint8 *addr)
4227 MonoAotModule *amodule;
4230 * Since AOT code is only used in the root domain,
4231 * mono_domain_get () != mono_get_root_domain () means the calling method
4232 * is AppDomain:InvokeInDomain, so this is the same check as in
4233 * mono_method_same_domain () but without loading the metadata for the method.
4235 if (mono_domain_get () == mono_get_root_domain ()) {
4237 amodule = find_aot_module (code);
4241 mono_arch_patch_plt_entry (plt_entry, got, regs, addr);
4246 * mono_aot_plt_resolve:
4248 * This function is called by the entries in the PLT to resolve the actual method that
4249 * needs to be called. It returns a trampoline to the method and patches the PLT entry.
4250 * Returns NULL if the something cannot be loaded.
4253 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
4255 #ifdef MONO_ARCH_AOT_SUPPORTED
4256 guint8 *p, *target, *plt_entry;
4258 MonoAotModule *module = (MonoAotModule*)aot_module;
4259 gboolean res, no_ftnptr = FALSE;
4261 gboolean using_gsharedvt = FALSE;
4263 //printf ("DYN: %p %d\n", aot_module, plt_info_offset);
4265 p = &module->blob [plt_info_offset];
4267 ji.type = decode_value (p, &p);
4269 mp = mono_mempool_new_size (512);
4270 res = decode_patch (module, mp, &ji, p, &p);
4273 mono_mempool_destroy (mp);
4277 #ifdef MONO_ARCH_GSHAREDVT_SUPPORTED
4278 using_gsharedvt = TRUE;
4282 * Avoid calling resolve_patch_target in the full-aot case if possible, since
4283 * it would create a trampoline, and we don't need that.
4284 * We could do this only if the method does not need the special handling
4285 * in mono_magic_trampoline ().
4287 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) &&
4288 !mono_method_needs_static_rgctx_invoke (ji.data.method, FALSE) && !using_gsharedvt) {
4289 target = mono_jit_compile_method (ji.data.method);
4292 target = mono_resolve_patch_target (NULL, mono_domain_get (), NULL, &ji, TRUE);
4296 * The trampoline expects us to return a function descriptor on platforms which use
4297 * it, but resolve_patch_target returns a direct function pointer for some type of
4298 * patches, so have to translate between the two.
4299 * FIXME: Clean this up, but how ?
4301 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) {
4302 /* These should already have a function descriptor */
4303 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
4304 /* Our function descriptors have a 0 environment, gcc created ones don't */
4305 if (ji.type != MONO_PATCH_INFO_INTERNAL_METHOD && ji.type != MONO_PATCH_INFO_JIT_ICALL_ADDR && ji.type != MONO_PATCH_INFO_ICALL_ADDR)
4306 g_assert (((gpointer*)target) [2] == 0);
4309 } else if (!no_ftnptr) {
4310 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
4311 g_assert (((gpointer*)target) [2] != 0);
4313 target = mono_create_ftnptr (mono_domain_get (), target);
4316 mono_mempool_destroy (mp);
4318 /* Patch the PLT entry with target which might be the actual method not a trampoline */
4319 plt_entry = mono_aot_get_plt_entry (code);
4320 g_assert (plt_entry);
4321 mono_aot_patch_plt_entry (code, plt_entry, module->got, NULL, target);
4325 g_assert_not_reached ();
4333 * Initialize the PLT table of the AOT module. Called lazily when the first AOT
4334 * method in the module is loaded to avoid committing memory by writing to it.
4335 * LOCKING: Assumes the AMODULE lock is held.
4338 init_plt (MonoAotModule *amodule)
4343 if (amodule->plt_inited)
4346 tramp = mono_create_specific_trampoline (amodule, MONO_TRAMPOLINE_AOT_PLT, mono_get_root_domain (), NULL);
4349 * Initialize the PLT entries in the GOT to point to the default targets.
4352 tramp = mono_create_ftnptr (mono_domain_get (), tramp);
4353 for (i = 1; i < amodule->info.plt_size; ++i)
4354 /* All the default entries point to the AOT trampoline */
4355 ((gpointer*)amodule->got)[amodule->info.plt_got_offset_base + i] = tramp;
4357 amodule->plt_inited = TRUE;
4361 * mono_aot_get_plt_entry:
4363 * Return the address of the PLT entry called by the code at CODE if exists.
4366 mono_aot_get_plt_entry (guint8 *code)
4368 MonoAotModule *amodule = find_aot_module (code);
4369 guint8 *target = NULL;
4375 if (is_thumb_code (amodule, code))
4376 return mono_arm_get_thumb_plt_entry (code);
4379 #ifdef MONO_ARCH_AOT_SUPPORTED
4380 target = mono_arch_get_call_target (code);
4382 g_assert_not_reached ();
4386 while (target != NULL) {
4387 if ((target >= (guint8*)(amodule->plt)) && (target < (guint8*)(amodule->plt_end)))
4390 // Add 4 since mono_arch_get_call_target assumes we're passing
4391 // the instruction after the actual branch instruction.
4392 target = mono_arch_get_call_target (target + 4);
4397 if ((target >= (guint8*)(amodule->plt)) && (target < (guint8*)(amodule->plt_end)))
4405 * mono_aot_get_plt_info_offset:
4407 * Return the PLT info offset belonging to the plt entry called by CODE.
4410 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
4412 guint8 *plt_entry = mono_aot_get_plt_entry (code);
4414 g_assert (plt_entry);
4416 /* The offset is embedded inside the code after the plt entry */
4417 #ifdef MONO_ARCH_AOT_SUPPORTED
4418 return mono_arch_get_plt_info_offset (plt_entry, regs, code);
4420 g_assert_not_reached ();
4426 mono_create_ftnptr_malloc (guint8 *code)
4428 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
4429 MonoPPCFunctionDescriptor *ftnptr = g_malloc0 (sizeof (MonoPPCFunctionDescriptor));
4431 ftnptr->code = code;
4442 * mono_aot_register_jit_icall:
4444 * Register a JIT icall which is called by trampolines in full-aot mode. This should
4445 * be called from mono_arch_init () during startup.
4448 mono_aot_register_jit_icall (const char *name, gpointer addr)
4450 /* No need for locking */
4451 if (!aot_jit_icall_hash)
4452 aot_jit_icall_hash = g_hash_table_new (g_str_hash, g_str_equal);
4453 g_hash_table_insert (aot_jit_icall_hash, (char*)name, addr);
4457 * load_function_full:
4459 * Load the function named NAME from the aot image.
4462 load_function_full (MonoAotModule *amodule, const char *name, MonoTrampInfo **out_tinfo)
4466 int n_patches, pindex;
4469 guint32 info_offset;
4473 symbol = g_strdup_printf ("%s", name);
4474 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&code);
4477 g_error ("Symbol '%s' not found in AOT file '%s'.\n", name, amodule->aot_name);
4479 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT: FOUND function '%s' in AOT file '%s'.", name, amodule->aot_name);
4483 symbol = g_strdup_printf ("%s_p", name);
4484 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&p);
4487 /* Nothing to patch */
4490 info_offset = *(guint32*)p;
4492 MonoTrampInfo *tinfo;
4493 guint32 code_size, uw_info_len, uw_offset;
4495 /* Construct a MonoTrampInfo from the data in the AOT image */
4497 p += sizeof (guint32);
4498 code_size = *(guint32*)p;
4499 p += sizeof (guint32);
4500 uw_offset = *(guint32*)p;
4501 uw_info = amodule->unwind_info + uw_offset;
4502 uw_info_len = decode_value (uw_info, &uw_info);
4504 tinfo = g_new0 (MonoTrampInfo, 1);
4506 tinfo->code_size = code_size;
4507 tinfo->uw_info = uw_info;
4508 tinfo->uw_info_len = uw_info_len;
4513 p = amodule->blob + info_offset;
4515 /* Similar to mono_aot_load_method () */
4517 n_patches = decode_value (p, &p);
4520 MonoJumpInfo *patches;
4523 mp = mono_mempool_new ();
4525 patches = load_patch_info (amodule, mp, n_patches, FALSE, &got_slots, p, &p);
4528 for (pindex = 0; pindex < n_patches; ++pindex) {
4529 MonoJumpInfo *ji = &patches [pindex];
4532 if (amodule->got [got_slots [pindex]])
4536 * When this code is executed, the runtime may not be initalized yet, so
4537 * resolve the patch info by hand.
4539 if (ji->type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
4540 if (!strcmp (ji->data.name, "mono_get_lmf_addr")) {
4541 target = mono_get_lmf_addr;
4542 } else if (!strcmp (ji->data.name, "mono_thread_force_interruption_checkpoint")) {
4543 target = mono_thread_force_interruption_checkpoint;
4544 } else if (!strcmp (ji->data.name, "mono_exception_from_token")) {
4545 target = mono_exception_from_token;
4546 } else if (!strcmp (ji->data.name, "mono_throw_exception")) {
4547 target = mono_get_throw_exception ();
4548 } else if (strstr (ji->data.name, "trampoline_func_") == ji->data.name) {
4549 int tramp_type2 = atoi (ji->data.name + strlen ("trampoline_func_"));
4550 target = (gpointer)mono_get_trampoline_func (tramp_type2);
4551 } else if (strstr (ji->data.name, "specific_trampoline_lazy_fetch_") == ji->data.name) {
4552 /* atoll is needed because the the offset is unsigned */
4556 res = sscanf (ji->data.name, "specific_trampoline_lazy_fetch_%u", &slot);
4557 g_assert (res == 1);
4558 target = mono_create_specific_trampoline (GUINT_TO_POINTER (slot), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, mono_get_root_domain (), NULL);
4559 target = mono_create_ftnptr_malloc (target);
4560 } else if (!strcmp (ji->data.name, "mono_thread_get_and_clear_pending_exception")) {
4561 target = mono_thread_get_and_clear_pending_exception;
4562 } else if (!strcmp (ji->data.name, "debugger_agent_single_step_from_context")) {
4563 target = debugger_agent_single_step_from_context;
4564 } else if (!strcmp (ji->data.name, "debugger_agent_breakpoint_from_context")) {
4565 target = debugger_agent_breakpoint_from_context;
4566 } else if (strstr (ji->data.name, "generic_trampoline_")) {
4567 target = mono_aot_get_trampoline (ji->data.name);
4568 } else if (aot_jit_icall_hash && g_hash_table_lookup (aot_jit_icall_hash, ji->data.name)) {
4569 /* Registered by mono_arch_init () */
4570 target = g_hash_table_lookup (aot_jit_icall_hash, ji->data.name);
4572 fprintf (stderr, "Unknown relocation '%s'\n", ji->data.name);
4573 g_assert_not_reached ();
4577 /* Hopefully the code doesn't have patches which need method or
4580 target = mono_resolve_patch_target (NULL, NULL, code, ji, FALSE);
4584 amodule->got [got_slots [pindex]] = target;
4589 mono_mempool_destroy (mp);
4596 load_function (MonoAotModule *amodule, const char *name)
4598 return load_function_full (amodule, name, NULL);
4601 static MonoAotModule*
4602 get_mscorlib_aot_module (void)
4605 MonoAotModule *amodule;
4607 image = mono_defaults.corlib;
4609 amodule = image->aot_module;
4611 amodule = mscorlib_aot_module;
4617 * Return the trampoline identified by NAME from the mscorlib AOT file.
4618 * On ppc64, this returns a function descriptor.
4621 mono_aot_get_trampoline_full (const char *name, MonoTrampInfo **out_tinfo)
4623 MonoAotModule *amodule = get_mscorlib_aot_module ();
4625 return mono_create_ftnptr_malloc (load_function_full (amodule, name, out_tinfo));
4629 mono_aot_get_trampoline (const char *name)
4631 MonoTrampInfo *out_tinfo;
4634 code = mono_aot_get_trampoline_full (name, &out_tinfo);
4635 mono_tramp_info_register (out_tinfo, NULL);
4641 read_unwind_info (MonoAotModule *amodule, MonoTrampInfo *info, const char *symbol_name)
4643 gpointer symbol_addr;
4644 guint32 uw_offset, uw_info_len;
4647 find_symbol (amodule->sofile, amodule->globals, symbol_name, &symbol_addr);
4652 uw_offset = *(guint32*)symbol_addr;
4653 uw_info = amodule->unwind_info + uw_offset;
4654 uw_info_len = decode_value (uw_info, &uw_info);
4656 info->uw_info = uw_info;
4657 info->uw_info_len = uw_info_len;
4659 /* If successful return the address of the following data */
4660 return (guint32*)symbol_addr + 1;
4664 #include <mach/mach.h>
4666 static TrampolinePage* trampoline_pages [MONO_AOT_TRAMP_NUM];
4669 read_page_trampoline_uwinfo (MonoTrampInfo *info, int tramp_type, gboolean is_generic)
4671 char symbol_name [128];
4673 if (tramp_type == MONO_AOT_TRAMP_SPECIFIC)
4674 sprintf (symbol_name, "specific_trampolines_page_%s_p", is_generic ? "gen" : "sp");
4675 else if (tramp_type == MONO_AOT_TRAMP_STATIC_RGCTX)
4676 sprintf (symbol_name, "rgctx_trampolines_page_%s_p", is_generic ? "gen" : "sp");
4677 else if (tramp_type == MONO_AOT_TRAMP_IMT_THUNK)
4678 sprintf (symbol_name, "imt_trampolines_page_%s_p", is_generic ? "gen" : "sp");
4679 else if (tramp_type == MONO_AOT_TRAMP_GSHAREDVT_ARG)
4680 sprintf (symbol_name, "gsharedvt_trampolines_page_%s_p", is_generic ? "gen" : "sp");
4682 g_assert_not_reached ();
4684 read_unwind_info (mono_defaults.corlib->aot_module, info, symbol_name);
4687 static unsigned char*
4688 get_new_trampoline_from_page (int tramp_type)
4690 MonoAotModule *amodule;
4692 TrampolinePage *page;
4695 vm_address_t addr, taddr;
4697 vm_prot_t prot, max_prot;
4698 int psize, specific_trampoline_size;
4699 unsigned char *code;
4701 specific_trampoline_size = 2 * sizeof (gpointer);
4703 mono_aot_page_lock ();
4704 page = trampoline_pages [tramp_type];
4705 if (page && page->trampolines < page->trampolines_end) {
4706 code = page->trampolines;
4707 page->trampolines += specific_trampoline_size;
4708 mono_aot_page_unlock ();
4711 mono_aot_page_unlock ();
4712 /* the trampoline template page is in the mscorlib module */
4713 image = mono_defaults.corlib;
4716 psize = MONO_AOT_TRAMP_PAGE_SIZE;
4718 amodule = image->aot_module;
4721 if (tramp_type == MONO_AOT_TRAMP_SPECIFIC)
4722 tpage = load_function (amodule, "specific_trampolines_page");
4723 else if (tramp_type == MONO_AOT_TRAMP_STATIC_RGCTX)
4724 tpage = load_function (amodule, "rgctx_trampolines_page");
4725 else if (tramp_type == MONO_AOT_TRAMP_IMT_THUNK)
4726 tpage = load_function (amodule, "imt_trampolines_page");
4727 else if (tramp_type == MONO_AOT_TRAMP_GSHAREDVT_ARG)
4728 tpage = load_function (amodule, "gsharedvt_arg_trampolines_page");
4730 g_error ("Incorrect tramp type for trampolines page");
4732 /*g_warning ("loaded trampolines page at %x", tpage);*/
4734 /* avoid the unlikely case of looping forever */
4737 while (page == NULL && count-- > 0) {
4738 MonoTrampInfo *gen_info, *sp_info;
4741 /* allocate two contiguous pages of memory: the first page will contain the data (like a local constant pool)
4742 * while the second will contain the trampolines.
4744 ret = vm_allocate (mach_task_self (), &addr, psize * 2, VM_FLAGS_ANYWHERE);
4745 if (ret != KERN_SUCCESS) {
4746 g_error ("Cannot allocate memory for trampolines: %d", ret);
4749 /*g_warning ("allocated trampoline double page at %x", addr);*/
4750 /* replace the second page with a remapped trampoline page */
4751 taddr = addr + psize;
4752 vm_deallocate (mach_task_self (), taddr, psize);
4753 ret = vm_remap (mach_task_self (), &taddr, psize, 0, FALSE, mach_task_self(), (vm_address_t)tpage, FALSE, &prot, &max_prot, VM_INHERIT_SHARE);
4754 if (ret != KERN_SUCCESS) {
4755 /* someone else got the page, try again */
4756 vm_deallocate (mach_task_self (), addr, psize);
4759 /*g_warning ("remapped trampoline page at %x", taddr);*/
4761 mono_aot_page_lock ();
4762 page = trampoline_pages [tramp_type];
4763 /* some other thread already allocated, so use that to avoid wasting memory */
4764 if (page && page->trampolines < page->trampolines_end) {
4765 code = page->trampolines;
4766 page->trampolines += specific_trampoline_size;
4767 mono_aot_page_unlock ();
4768 vm_deallocate (mach_task_self (), addr, psize);
4769 vm_deallocate (mach_task_self (), taddr, psize);
4772 page = (TrampolinePage*)addr;
4773 page->next = trampoline_pages [tramp_type];
4774 trampoline_pages [tramp_type] = page;
4775 page->trampolines = (void*)(taddr + amodule->info.tramp_page_code_offsets [tramp_type]);
4776 page->trampolines_end = (void*)(taddr + psize - 64);
4777 code = page->trampolines;
4778 page->trampolines += specific_trampoline_size;
4779 mono_aot_page_unlock ();
4781 /* Register the generic part at the beggining of the trampoline page */
4782 gen_info = mono_tramp_info_create (NULL, (guint8*)taddr, amodule->info.tramp_page_code_offsets [tramp_type], NULL, NULL);
4783 read_page_trampoline_uwinfo (gen_info, tramp_type, TRUE);
4784 mono_tramp_info_register (gen_info, NULL);
4787 * Registering each specific trampoline produces a lot of
4788 * MonoJitInfo structures. Jump trampolines are also registered
4791 if (tramp_type != MONO_AOT_TRAMP_SPECIFIC) {
4792 /* Register the rest of the page as a single trampoline */
4793 sp_info = mono_tramp_info_create (NULL, code, page->trampolines_end - code, NULL, NULL);
4794 read_page_trampoline_uwinfo (sp_info, tramp_type, FALSE);
4795 mono_tramp_info_register (sp_info, NULL);
4799 g_error ("Cannot allocate more trampoline pages: %d", ret);
4804 static unsigned char*
4805 get_new_trampoline_from_page (int tramp_type)
4807 g_error ("Page trampolines not supported.");
4814 get_new_specific_trampoline_from_page (gpointer tramp, gpointer arg)
4819 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_SPECIFIC);
4821 data = (gpointer*)((char*)code - MONO_AOT_TRAMP_PAGE_SIZE);
4824 /*g_warning ("new trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
4830 get_new_rgctx_trampoline_from_page (gpointer tramp, gpointer arg)
4835 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_STATIC_RGCTX);
4837 data = (gpointer*)((char*)code - MONO_AOT_TRAMP_PAGE_SIZE);
4840 /*g_warning ("new rgctx trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
4846 get_new_imt_trampoline_from_page (gpointer arg)
4851 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_IMT_THUNK);
4853 data = (gpointer*)((char*)code - MONO_AOT_TRAMP_PAGE_SIZE);
4855 /*g_warning ("new imt trampoline at %p for data %p, (stored at %p)", code, arg, data);*/
4861 get_new_gsharedvt_arg_trampoline_from_page (gpointer tramp, gpointer arg)
4866 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_GSHAREDVT_ARG);
4868 data = (gpointer*)((char*)code - MONO_AOT_TRAMP_PAGE_SIZE);
4871 /*g_warning ("new rgctx trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
4875 /* Return a given kind of trampoline */
4876 /* FIXME set unwind info for these trampolines */
4878 get_numerous_trampoline (MonoAotTrampoline tramp_type, int n_got_slots, MonoAotModule **out_amodule, guint32 *got_offset, guint32 *out_tramp_size)
4881 MonoAotModule *amodule = get_mscorlib_aot_module ();
4882 int index, tramp_size;
4884 /* Currently, we keep all trampolines in the mscorlib AOT image */
4885 image = mono_defaults.corlib;
4887 *out_amodule = amodule;
4892 #define MONOTOUCH_TRAMPOLINES_ERROR ". See http://docs.xamarin.com/ios/troubleshooting for instructions on how to fix this condition."
4894 #define MONOTOUCH_TRAMPOLINES_ERROR ""
4896 if (amodule->trampoline_index [tramp_type] == amodule->info.num_trampolines [tramp_type]) {
4897 g_error ("Ran out of trampolines of type %d in '%s' (%d)%s\n",
4898 tramp_type, image ? image->name : "mscorlib", amodule->info.num_trampolines [tramp_type], MONOTOUCH_TRAMPOLINES_ERROR);
4900 index = amodule->trampoline_index [tramp_type] ++;
4904 *got_offset = amodule->info.trampoline_got_offset_base [tramp_type] + (index * n_got_slots);
4906 tramp_size = amodule->info.trampoline_size [tramp_type];
4909 *out_tramp_size = tramp_size;
4911 return amodule->trampolines [tramp_type] + (index * tramp_size);
4915 * Return a specific trampoline from the AOT file.
4918 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
4920 MonoAotModule *amodule;
4921 guint32 got_offset, tramp_size;
4922 guint8 *code, *tramp;
4923 static gpointer generic_trampolines [MONO_TRAMPOLINE_NUM];
4924 static gboolean inited;
4925 static guint32 num_trampolines;
4931 mono_counters_register ("Specific trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &num_trampolines);
4940 if (!generic_trampolines [tramp_type]) {
4943 symbol = mono_get_generic_trampoline_name (tramp_type);
4944 generic_trampolines [tramp_type] = mono_aot_get_trampoline (symbol);
4948 tramp = generic_trampolines [tramp_type];
4951 if (USE_PAGE_TRAMPOLINES) {
4952 code = get_new_specific_trampoline_from_page (tramp, arg1);
4955 code = get_numerous_trampoline (MONO_AOT_TRAMP_SPECIFIC, 2, &amodule, &got_offset, &tramp_size);
4957 amodule->got [got_offset] = tramp;
4958 amodule->got [got_offset + 1] = arg1;
4962 *code_len = tramp_size;
4968 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
4970 MonoAotModule *amodule;
4974 if (USE_PAGE_TRAMPOLINES) {
4975 code = get_new_rgctx_trampoline_from_page (addr, ctx);
4977 code = get_numerous_trampoline (MONO_AOT_TRAMP_STATIC_RGCTX, 2, &amodule, &got_offset, NULL);
4979 amodule->got [got_offset] = ctx;
4980 amodule->got [got_offset + 1] = addr;
4983 /* The caller expects an ftnptr */
4984 return mono_create_ftnptr (mono_domain_get (), code);
4988 mono_aot_get_unbox_trampoline (MonoMethod *method)
4990 guint32 method_index = mono_metadata_token_index (method->token) - 1;
4991 MonoAotModule *amodule;
4993 guint32 *ut, *ut_end, *entry;
4994 int low, high, entry_index = 0;
4995 gpointer symbol_addr;
4996 MonoTrampInfo *tinfo;
4998 if (method->is_inflated && !mono_method_is_generic_sharable_full (method, FALSE, FALSE, FALSE)) {
4999 method_index = find_aot_method (method, &amodule);
5000 if (method_index == 0xffffff && mono_method_is_generic_sharable_full (method, FALSE, TRUE, FALSE)) {
5001 MonoMethod *shared = mini_get_shared_method_full (method, FALSE, FALSE);
5002 method_index = find_aot_method (shared, &amodule);
5004 if (method_index == 0xffffff && mono_method_is_generic_sharable_full (method, FALSE, TRUE, TRUE)) {
5005 MonoMethod *shared = mini_get_shared_method_full (method, TRUE, TRUE);
5006 method_index = find_aot_method (shared, &amodule);
5008 g_assert (method_index != 0xffffff);
5010 amodule = method->klass->image->aot_module;
5014 ut = amodule->unbox_trampolines;
5015 ut_end = amodule->unbox_trampolines_end;
5017 /* Do a binary search in the sorted table */
5020 high = (ut_end - ut);
5021 while (low < high) {
5022 entry_index = (low + high) / 2;
5023 entry = &ut [entry_index];
5024 if (entry [0] < method_index) {
5025 low = entry_index + 1;
5026 } else if (entry [0] > method_index) {
5033 code = get_call_table_entry (amodule->unbox_trampoline_addresses, entry_index);
5036 tinfo = mono_tramp_info_create (NULL, code, 0, NULL, NULL);
5038 symbol_addr = read_unwind_info (amodule, tinfo, "unbox_trampoline_p");
5040 mono_tramp_info_free (tinfo);
5044 tinfo->code_size = *(guint32*)symbol_addr;
5045 mono_tramp_info_register (tinfo, NULL);
5047 /* The caller expects an ftnptr */
5048 return mono_create_ftnptr (mono_domain_get (), code);
5052 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
5056 MonoAotModule *amodule = mono_defaults.corlib->aot_module;
5057 guint32 index = MONO_RGCTX_SLOT_INDEX (slot);
5058 static int count = 0;
5061 if (index >= amodule->info.num_rgctx_fetch_trampolines) {
5062 static gpointer addr;
5066 * Use the general version of the rgctx fetch trampoline. It receives a pair of <slot, trampoline> in the rgctx arg reg.
5069 addr = load_function (amodule, "rgctx_fetch_trampoline_general");
5070 info = mono_domain_alloc0 (mono_get_root_domain (), sizeof (gpointer) * 2);
5071 info [0] = GUINT_TO_POINTER (slot);
5072 info [1] = mono_create_specific_trampoline (GUINT_TO_POINTER (slot), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, mono_get_root_domain (), NULL);
5073 code = mono_aot_get_static_rgctx_trampoline (info, addr);
5074 return mono_create_ftnptr (mono_domain_get (), code);
5077 symbol = mono_get_rgctx_fetch_trampoline_name (slot);
5078 code = load_function (mono_defaults.corlib->aot_module, symbol);
5080 /* The caller expects an ftnptr */
5081 return mono_create_ftnptr (mono_domain_get (), code);
5085 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
5090 int i, index, real_count;
5091 MonoAotModule *amodule;
5094 for (i = 0; i < count; ++i) {
5095 MonoIMTCheckItem *item = imt_entries [i];
5097 if (item->is_equals)
5101 /* Save the entries into an array */
5102 buf = mono_domain_alloc (domain, (real_count + 1) * 2 * sizeof (gpointer));
5104 for (i = 0; i < count; ++i) {
5105 MonoIMTCheckItem *item = imt_entries [i];
5107 if (!item->is_equals)
5110 g_assert (item->key);
5112 buf [(index * 2)] = item->key;
5113 if (item->has_target_code) {
5114 gpointer *p = mono_domain_alloc (domain, sizeof (gpointer));
5115 *p = item->value.target_code;
5116 buf [(index * 2) + 1] = p;
5118 buf [(index * 2) + 1] = &(vtable->vtable [item->value.vtable_slot]);
5122 buf [(index * 2)] = NULL;
5123 buf [(index * 2) + 1] = fail_tramp;
5125 if (USE_PAGE_TRAMPOLINES) {
5126 code = get_new_imt_trampoline_from_page (buf);
5128 code = get_numerous_trampoline (MONO_AOT_TRAMP_IMT_THUNK, 1, &amodule, &got_offset, NULL);
5130 amodule->got [got_offset] = buf;
5137 mono_aot_get_gsharedvt_arg_trampoline (gpointer arg, gpointer addr)
5139 MonoAotModule *amodule;
5143 if (USE_PAGE_TRAMPOLINES) {
5144 code = get_new_gsharedvt_arg_trampoline_from_page (addr, arg);
5146 code = get_numerous_trampoline (MONO_AOT_TRAMP_GSHAREDVT_ARG, 2, &amodule, &got_offset, NULL);
5148 amodule->got [got_offset] = arg;
5149 amodule->got [got_offset + 1] = addr;
5152 /* The caller expects an ftnptr */
5153 return mono_create_ftnptr (mono_domain_get (), code);
5157 * mono_aot_set_make_unreadable:
5159 * Set whenever to make all mmaped memory unreadable. In conjuction with a
5160 * SIGSEGV handler, this is useful to find out which pages the runtime tries to read.
5163 mono_aot_set_make_unreadable (gboolean unreadable)
5167 make_unreadable = unreadable;
5169 if (make_unreadable && !inited) {
5170 mono_counters_register ("AOT: pagefaults", MONO_COUNTER_JIT | MONO_COUNTER_INT, &n_pagefaults);
5175 MonoAotModule *module;
5180 find_map (gpointer key, gpointer value, gpointer user_data)
5182 MonoAotModule *module = (MonoAotModule*)value;
5183 FindMapUserData *data = (FindMapUserData*)user_data;
5186 if ((data->ptr >= module->mem_begin) && (data->ptr < module->mem_end))
5187 data->module = module;
5190 static MonoAotModule*
5191 find_module_for_addr (void *ptr)
5193 FindMapUserData data;
5195 if (!make_unreadable)
5199 data.ptr = (guint8*)ptr;
5202 g_hash_table_foreach (aot_modules, (GHFunc)find_map, &data);
5209 * mono_aot_is_pagefault:
5211 * Should be called from a SIGSEGV signal handler to find out whenever @ptr is
5212 * within memory allocated by this module.
5215 mono_aot_is_pagefault (void *ptr)
5217 if (!make_unreadable)
5221 * Not signal safe, but SIGSEGV's are synchronous, and
5222 * this is only turned on by a MONO_DEBUG option.
5224 return find_module_for_addr (ptr) != NULL;
5228 * mono_aot_handle_pagefault:
5230 * Handle a pagefault caused by an unreadable page by making it readable again.
5233 mono_aot_handle_pagefault (void *ptr)
5235 #ifndef PLATFORM_WIN32
5236 guint8* start = (guint8*)ROUND_DOWN (((gssize)ptr), mono_pagesize ());
5240 res = mono_mprotect (start, mono_pagesize (), MONO_MMAP_READ|MONO_MMAP_WRITE|MONO_MMAP_EXEC);
5241 g_assert (res == 0);
5252 mono_aot_init (void)
5257 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
5263 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
5269 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
5275 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
5281 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
5287 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
5293 mono_aot_get_plt_entry (guint8 *code)
5299 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
5305 mono_aot_patch_plt_entry (guint8 *code, guint8 *plt_entry, gpointer *got, mgreg_t *regs, guint8 *addr)
5310 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
5316 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
5318 g_assert_not_reached ();
5324 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
5326 g_assert_not_reached ();
5331 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
5333 g_assert_not_reached ();
5338 mono_aot_get_trampoline (const char *name)
5340 g_assert_not_reached ();
5345 mono_aot_get_unbox_trampoline (MonoMethod *method)
5347 g_assert_not_reached ();
5352 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
5354 g_assert_not_reached ();
5359 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
5361 g_assert_not_reached ();
5366 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
5368 g_assert_not_reached ();
5373 mono_aot_register_jit_icall (const char *name, gpointer addr)