2 * aot-runtime.c: mono Ahead of Time compiler
5 * Dietmar Maurer (dietmar@ximian.com)
6 * Zoltan Varga (vargaz@gmail.com)
8 * (C) 2002 Ximian, Inc.
9 * Copyright 2003-2011 Novell, Inc.
10 * Copyright 2011 Xamarin, Inc.
14 #include <sys/types.h>
20 #ifdef HAVE_SYS_MMAN_H
29 #ifdef HAVE_EXECINFO_H
36 #ifdef HAVE_SYS_WAIT_H
37 #include <sys/wait.h> /* for WIFEXITED, WEXITSTATUS */
40 #include <mono/metadata/abi-details.h>
41 #include <mono/metadata/tabledefs.h>
42 #include <mono/metadata/class.h>
43 #include <mono/metadata/object.h>
44 #include <mono/metadata/tokentype.h>
45 #include <mono/metadata/appdomain.h>
46 #include <mono/metadata/debug-helpers.h>
47 #include <mono/metadata/assembly.h>
48 #include <mono/metadata/metadata-internals.h>
49 #include <mono/metadata/marshal.h>
50 #include <mono/metadata/gc-internals.h>
51 #include <mono/metadata/threads-types.h>
52 #include <mono/metadata/mono-endian.h>
53 #include <mono/utils/mono-logger-internals.h>
54 #include <mono/utils/mono-mmap.h>
55 #include <mono/utils/mono-compiler.h>
56 #include <mono/utils/mono-counters.h>
57 #include <mono/utils/mono-digest.h>
60 #include "seq-points.h"
62 #include "debugger-agent.h"
63 #include "aot-compiler.h"
68 #define ENABLE_AOT_CACHE
71 /* Number of got entries shared between the JIT and LLVM GOT */
72 #define N_COMMON_GOT_ENTRIES 10
74 #define ALIGN_TO(val,align) ((((guint64)val) + ((align) - 1)) & ~((align) - 1))
75 #define ALIGN_PTR_TO(ptr,align) (gpointer)((((gssize)(ptr)) + (align - 1)) & (~(align - 1)))
76 #define ROUND_DOWN(VALUE,SIZE) ((VALUE) & ~((SIZE) - 1))
83 typedef struct MonoAotModule {
85 /* Pointer to the Global Offset Table */
89 GHashTable *name_cache;
90 GHashTable *extra_methods;
91 /* Maps methods to their code */
92 GHashTable *method_to_code;
93 /* Maps pointers into the method info to the methods themselves */
94 GHashTable *method_ref_to_method;
95 MonoAssemblyName *image_names;
97 MonoAssembly *assembly;
98 MonoImage **image_table;
99 guint32 image_table_len;
100 gboolean out_of_date;
102 gboolean got_initializing;
105 guint8 *jit_code_start;
106 guint8 *jit_code_end;
107 guint8 *llvm_code_start;
108 guint8 *llvm_code_end;
112 /* Maps method indexes to their code */
114 /* Sorted array of method addresses */
115 gpointer *sorted_methods;
116 /* Method indexes for each method in sorted_methods */
117 int *sorted_method_indexes;
118 /* The length of the two tables above */
119 int sorted_methods_len;
120 guint32 *method_info_offsets;
121 guint32 *ex_info_offsets;
122 guint32 *class_info_offsets;
123 guint32 *methods_loaded;
124 guint16 *class_name_table;
125 guint32 *extra_method_table;
126 guint32 *extra_method_info_offsets;
127 guint32 *unbox_trampolines;
128 guint32 *unbox_trampolines_end;
129 guint32 *unbox_trampoline_addresses;
132 /* Points to the mono EH data created by LLVM */
133 guint8 *mono_eh_frame;
135 /* Points to the trampolines */
136 guint8 *trampolines [MONO_AOT_TRAMP_NUM];
137 /* The first unused trampoline of each kind */
138 guint32 trampoline_index [MONO_AOT_TRAMP_NUM];
140 gboolean use_page_trampolines;
142 MonoAotFileInfo info;
147 JitInfoMap *async_jit_info_table;
153 unsigned char *trampolines;
154 unsigned char *trampolines_end;
157 static GHashTable *aot_modules;
158 #define mono_aot_lock() mono_os_mutex_lock (&aot_mutex)
159 #define mono_aot_unlock() mono_os_mutex_unlock (&aot_mutex)
160 static mono_mutex_t aot_mutex;
163 * Maps assembly names to the mono_aot_module_<NAME>_info symbols in the
164 * AOT modules registered by mono_aot_register_module ().
166 static GHashTable *static_aot_modules;
169 * Maps MonoJitInfo* to the aot module they belong to, this can be different
170 * from ji->method->klass->image's aot module for generic instances.
172 static GHashTable *ji_to_amodule;
175 * Whenever to AOT compile loaded assemblies on demand and store them in
178 static gboolean enable_aot_cache = FALSE;
180 static gboolean mscorlib_aot_loaded;
183 static gint32 mono_last_aot_method = -1;
185 static gboolean make_unreadable = FALSE;
186 static guint32 name_table_accesses = 0;
187 static guint32 n_pagefaults = 0;
189 /* Used to speed-up find_aot_module () */
190 static gsize aot_code_low_addr = (gssize)-1;
191 static gsize aot_code_high_addr = 0;
194 static gint32 async_jit_info_size;
196 static GHashTable *aot_jit_icall_hash;
199 #define USE_PAGE_TRAMPOLINES ((MonoAotModule*)mono_defaults.corlib->aot_module)->use_page_trampolines
201 #define USE_PAGE_TRAMPOLINES 0
204 #define mono_aot_page_lock() mono_os_mutex_lock (&aot_page_mutex)
205 #define mono_aot_page_unlock() mono_os_mutex_unlock (&aot_page_mutex)
206 static mono_mutex_t aot_page_mutex;
208 static MonoAotModule *mscorlib_aot_module;
211 init_plt (MonoAotModule *info);
214 compute_llvm_code_range (MonoAotModule *amodule, guint8 **code_start, guint8 **code_end);
217 init_llvm_method (MonoAotModule *amodule, guint32 method_index, MonoMethod *method, MonoClass *init_class, MonoGenericContext *context);
220 decode_patches (MonoAotModule *amodule, MonoMemPool *mp, int n_patches, gboolean llvm, guint32 *got_offsets);
223 amodule_lock (MonoAotModule *amodule)
225 mono_os_mutex_lock (&amodule->mutex);
229 amodule_unlock (MonoAotModule *amodule)
231 mono_os_mutex_unlock (&amodule->mutex);
237 * Load one of the images referenced by AMODULE. Returns NULL if the image is not
238 * found, and sets the loader error if SET_ERROR is TRUE.
241 load_image (MonoAotModule *amodule, int index, gboolean set_error)
243 MonoAssembly *assembly;
244 MonoImageOpenStatus status;
246 g_assert (index < amodule->image_table_len);
248 if (amodule->image_table [index])
249 return amodule->image_table [index];
250 if (amodule->out_of_date)
253 assembly = mono_assembly_load (&amodule->image_names [index], amodule->assembly->basedir, &status);
255 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: module %s is unusable because dependency %s is not found.\n", amodule->aot_name, amodule->image_names [index].name);
256 amodule->out_of_date = TRUE;
259 char *full_name = mono_stringify_assembly_name (&amodule->image_names [index]);
260 mono_loader_set_error_assembly_load (full_name, FALSE);
266 if (strcmp (assembly->image->guid, amodule->image_guids [index])) {
267 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: module %s is unusable (GUID of dependent assembly %s doesn't match (expected '%s', got '%s').\n", amodule->aot_name, amodule->image_names [index].name, amodule->image_guids [index], assembly->image->guid);
268 amodule->out_of_date = TRUE;
272 amodule->image_table [index] = assembly->image;
273 return assembly->image;
277 decode_value (guint8 *ptr, guint8 **rptr)
282 if ((b & 0x80) == 0){
285 } else if ((b & 0x40) == 0){
286 len = ((b & 0x3f) << 8 | ptr [1]);
288 } else if (b != 0xff) {
289 len = ((b & 0x1f) << 24) |
296 len = (ptr [1] << 24) | (ptr [2] << 16) | (ptr [3] << 8) | ptr [4];
302 //printf ("DECODE: %d.\n", len);
307 * mono_aot_get_offset:
309 * Decode an offset table emitted by emit_offset_table (), returning the INDEXth
313 mono_aot_get_offset (guint32 *table, int index)
315 int i, group, ngroups, index_entry_size;
316 int start_offset, offset, group_size;
317 guint8 *data_start, *p;
318 guint32 *index32 = NULL;
319 guint16 *index16 = NULL;
321 /* noffsets = table [0]; */
322 group_size = table [1];
324 index_entry_size = table [3];
325 group = index / group_size;
327 if (index_entry_size == 2) {
328 index16 = (guint16*)&table [4];
329 data_start = (guint8*)&index16 [ngroups];
330 p = data_start + index16 [group];
332 index32 = (guint32*)&table [4];
333 data_start = (guint8*)&index32 [ngroups];
334 p = data_start + index32 [group];
337 /* offset will contain the value of offsets [group * group_size] */
338 offset = start_offset = decode_value (p, &p);
339 for (i = group * group_size + 1; i <= index; ++i) {
340 offset += decode_value (p, &p);
343 //printf ("Offset lookup: %d -> %d, start=%d, p=%d\n", index, offset, start_offset, table [3 + group]);
349 decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf);
352 decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf);
355 decode_type (MonoAotModule *module, guint8 *buf, guint8 **endbuf);
357 static MonoGenericInst*
358 decode_generic_inst (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
361 MonoType **type_argv;
362 MonoGenericInst *inst;
365 type_argc = decode_value (p, &p);
366 type_argv = g_new0 (MonoType*, type_argc);
368 for (i = 0; i < type_argc; ++i) {
369 MonoClass *pclass = decode_klass_ref (module, p, &p);
374 type_argv [i] = &pclass->byval_arg;
377 inst = mono_metadata_get_generic_inst (type_argc, type_argv);
386 decode_generic_context (MonoAotModule *module, MonoGenericContext *ctx, guint8 *buf, guint8 **endbuf)
393 argc = decode_value (p, &p);
396 ctx->class_inst = decode_generic_inst (module, p, &p);
397 if (!ctx->class_inst)
401 argc = decode_value (p, &p);
404 ctx->method_inst = decode_generic_inst (module, p, &p);
405 if (!ctx->method_inst)
414 decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
418 MonoClass *klass = NULL, *eklass;
419 guint32 token, rank, idx;
423 reftype = decode_value (p, &p);
430 case MONO_AOT_TYPEREF_TYPEDEF_INDEX:
431 idx = decode_value (p, &p);
432 image = load_image (module, 0, TRUE);
435 klass = mono_class_get_checked (image, MONO_TOKEN_TYPE_DEF + idx, &error);
436 g_assert (mono_error_ok (&error));
438 case MONO_AOT_TYPEREF_TYPEDEF_INDEX_IMAGE:
439 idx = decode_value (p, &p);
440 image = load_image (module, decode_value (p, &p), TRUE);
443 klass = mono_class_get_checked (image, MONO_TOKEN_TYPE_DEF + idx, &error);
444 g_assert (mono_error_ok (&error));
446 case MONO_AOT_TYPEREF_TYPESPEC_TOKEN:
447 token = decode_value (p, &p);
448 image = module->assembly->image;
451 klass = mono_class_get_checked (image, token, &error);
452 g_assert (mono_error_ok (&error));
454 case MONO_AOT_TYPEREF_GINST: {
456 MonoGenericContext ctx;
459 gclass = decode_klass_ref (module, p, &p);
462 g_assert (gclass->generic_container);
464 memset (&ctx, 0, sizeof (ctx));
465 ctx.class_inst = decode_generic_inst (module, p, &p);
468 type = mono_class_inflate_generic_type (&gclass->byval_arg, &ctx);
469 klass = mono_class_from_mono_type (type);
470 mono_metadata_free_type (type);
473 case MONO_AOT_TYPEREF_VAR: {
475 MonoGenericContainer *container = NULL;
476 gboolean has_constraint = decode_value (p, &p);
478 if (has_constraint) {
479 MonoClass *par_klass;
480 MonoType *gshared_constraint;
482 gshared_constraint = decode_type (module, p, &p);
483 if (!gshared_constraint)
486 par_klass = decode_klass_ref (module, p, &p);
490 t = mini_get_shared_gparam (&par_klass->byval_arg, gshared_constraint);
491 klass = mono_class_from_mono_type (t);
493 int type = decode_value (p, &p);
494 int num = decode_value (p, &p);
495 gboolean is_not_anonymous = decode_value (p, &p);
497 if (is_not_anonymous) {
498 gboolean is_method = decode_value (p, &p);
501 MonoMethod *method_def;
502 g_assert (type == MONO_TYPE_MVAR);
503 method_def = decode_resolve_method_ref (module, p, &p);
507 container = mono_method_get_generic_container (method_def);
509 MonoClass *class_def;
510 g_assert (type == MONO_TYPE_VAR);
511 class_def = decode_klass_ref (module, p, &p);
515 container = class_def->generic_container;
518 // We didn't decode is_method, so we have to infer it from type enum.
519 container = get_anonymous_container_for_image (module->assembly->image, type == MONO_TYPE_MVAR);
522 t = g_new0 (MonoType, 1);
524 if (is_not_anonymous) {
525 t->data.generic_param = mono_generic_container_get_param (container, num);
528 MonoGenericParam *par = (MonoGenericParam*)mono_image_alloc0 (module->assembly->image, sizeof (MonoGenericParamFull));
529 par->owner = container;
531 t->data.generic_param = par;
532 ((MonoGenericParamFull*)par)->info.name = make_generic_name_string (module->assembly->image, num);
534 // FIXME: Maybe use types directly to avoid
535 // the overhead of creating MonoClass-es
536 klass = mono_class_from_mono_type (t);
542 case MONO_AOT_TYPEREF_ARRAY:
544 rank = decode_value (p, &p);
545 eklass = decode_klass_ref (module, p, &p);
546 klass = mono_array_class_get (eklass, rank);
548 case MONO_AOT_TYPEREF_PTR: {
551 t = decode_type (module, p, &p);
554 klass = mono_class_from_mono_type (t);
558 case MONO_AOT_TYPEREF_BLOB_INDEX: {
559 guint32 offset = decode_value (p, &p);
562 p2 = module->blob + offset;
563 klass = decode_klass_ref (module, p2, &p2);
567 g_assert_not_reached ();
570 //printf ("BLA: %s\n", mono_type_full_name (&klass->byval_arg));
575 static MonoClassField*
576 decode_field_info (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
578 MonoClass *klass = decode_klass_ref (module, buf, &buf);
585 token = MONO_TOKEN_FIELD_DEF + decode_value (p, &p);
589 return mono_class_get_field (klass, token);
593 * Parse a MonoType encoded by encode_type () in aot-compiler.c. Return malloc-ed
597 decode_type (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
602 t = g_malloc0 (sizeof (MonoType));
605 if (*p == MONO_TYPE_PINNED) {
608 } else if (*p == MONO_TYPE_BYREF) {
621 case MONO_TYPE_BOOLEAN:
635 case MONO_TYPE_STRING:
636 case MONO_TYPE_OBJECT:
637 case MONO_TYPE_TYPEDBYREF:
639 case MONO_TYPE_VALUETYPE:
640 case MONO_TYPE_CLASS:
641 t->data.klass = decode_klass_ref (module, p, &p);
643 case MONO_TYPE_SZARRAY:
644 t->data.klass = decode_klass_ref (module, p, &p);
650 t->data.type = decode_type (module, p, &p);
652 case MONO_TYPE_GENERICINST: {
654 MonoGenericContext ctx;
658 gclass = decode_klass_ref (module, p, &p);
661 g_assert (gclass->generic_container);
663 memset (&ctx, 0, sizeof (ctx));
664 ctx.class_inst = decode_generic_inst (module, p, &p);
667 type = mono_class_inflate_generic_type (&gclass->byval_arg, &ctx);
668 klass = mono_class_from_mono_type (type);
669 t->data.generic_class = klass->generic_class;
672 case MONO_TYPE_ARRAY: {
673 MonoArrayType *array;
676 // FIXME: memory management
677 array = g_new0 (MonoArrayType, 1);
678 array->eklass = decode_klass_ref (module, p, &p);
681 array->rank = decode_value (p, &p);
682 array->numsizes = decode_value (p, &p);
685 array->sizes = g_malloc0 (sizeof (int) * array->numsizes);
686 for (i = 0; i < array->numsizes; ++i)
687 array->sizes [i] = decode_value (p, &p);
689 array->numlobounds = decode_value (p, &p);
690 if (array->numlobounds)
691 array->lobounds = g_malloc0 (sizeof (int) * array->numlobounds);
692 for (i = 0; i < array->numlobounds; ++i)
693 array->lobounds [i] = decode_value (p, &p);
694 t->data.array = array;
698 case MONO_TYPE_MVAR: {
699 MonoClass *klass = decode_klass_ref (module, p, &p);
702 t->data.generic_param = klass->byval_arg.data.generic_param;
706 g_assert_not_reached ();
714 // FIXME: Error handling, memory management
716 static MonoMethodSignature*
717 decode_signature_with_target (MonoAotModule *module, MonoMethodSignature *target, guint8 *buf, guint8 **endbuf)
719 MonoMethodSignature *sig;
721 int i, param_count, call_conv;
723 gboolean hasthis, explicit_this, has_gen_params;
727 has_gen_params = (flags & 0x10) != 0;
728 hasthis = (flags & 0x20) != 0;
729 explicit_this = (flags & 0x40) != 0;
730 call_conv = flags & 0x0F;
733 /* gen_param_count = */ decode_value (p, &p);
734 param_count = decode_value (p, &p);
735 if (target && param_count != target->param_count)
737 sig = g_malloc0 (MONO_SIZEOF_METHOD_SIGNATURE + param_count * sizeof (MonoType *));
738 sig->param_count = param_count;
739 sig->sentinelpos = -1;
740 sig->hasthis = hasthis;
741 sig->explicit_this = explicit_this;
742 sig->call_convention = call_conv;
743 sig->param_count = param_count;
744 sig->ret = decode_type (module, p, &p);
745 for (i = 0; i < param_count; ++i) {
746 if (*p == MONO_TYPE_SENTINEL) {
747 g_assert (sig->call_convention == MONO_CALL_VARARG);
748 sig->sentinelpos = i;
751 sig->params [i] = decode_type (module, p, &p);
754 if (sig->call_convention == MONO_CALL_VARARG && sig->sentinelpos == -1)
755 sig->sentinelpos = sig->param_count;
762 static MonoMethodSignature*
763 decode_signature (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
765 return decode_signature_with_target (module, NULL, buf, endbuf);
769 sig_matches_target (MonoAotModule *module, MonoMethod *target, guint8 *buf, guint8 **endbuf)
771 MonoMethodSignature *sig;
775 sig = decode_signature_with_target (module, mono_method_signature (target), p, &p);
776 res = sig && mono_metadata_signature_equal (mono_method_signature (target), sig);
782 /* Stores information returned by decode_method_ref () */
787 gboolean no_aot_trampoline;
791 * decode_method_ref_with_target:
793 * Decode a method reference, storing the image/token into a MethodRef structure.
794 * This avoids loading metadata for the method if the caller does not need it. If the method has
795 * no token, then it is loaded from metadata and ref->method is set to the method instance.
796 * If TARGET is non-NULL, abort decoding if it can be determined that the decoded method
797 * couldn't resolve to TARGET, and return FALSE.
798 * There are some kinds of method references which only support a non-null TARGET.
799 * This means that its not possible to decode this into a method, only to check
800 * that the method reference matches a given method. This is normally not a problem
801 * as these wrappers only occur in the extra_methods table, where we already have
802 * a method we want to lookup.
805 decode_method_ref_with_target (MonoAotModule *module, MethodRef *ref, MonoMethod *target, guint8 *buf, guint8 **endbuf)
807 guint32 image_index, value;
808 MonoImage *image = NULL;
811 memset (ref, 0, sizeof (MethodRef));
813 value = decode_value (p, &p);
814 image_index = value >> 24;
816 if (image_index == MONO_AOT_METHODREF_NO_AOT_TRAMPOLINE) {
817 ref->no_aot_trampoline = TRUE;
818 value = decode_value (p, &p);
819 image_index = value >> 24;
822 if (image_index < MONO_AOT_METHODREF_MIN || image_index == MONO_AOT_METHODREF_METHODSPEC || image_index == MONO_AOT_METHODREF_GINST) {
823 if (target && target->wrapper_type)
827 if (image_index == MONO_AOT_METHODREF_WRAPPER) {
829 guint32 wrapper_type;
831 wrapper_type = decode_value (p, &p);
833 if (target && target->wrapper_type != wrapper_type)
837 image = mono_defaults.corlib;
839 switch (wrapper_type) {
840 #ifndef DISABLE_REMOTING
841 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK: {
842 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
846 mono_class_init (m->klass);
850 ref->method = mono_marshal_get_remoting_invoke_with_check (m);
853 case MONO_WRAPPER_PROXY_ISINST: {
854 MonoClass *klass = decode_klass_ref (module, p, &p);
857 ref->method = mono_marshal_get_proxy_cancast (klass);
860 case MONO_WRAPPER_LDFLD:
861 case MONO_WRAPPER_LDFLDA:
862 case MONO_WRAPPER_STFLD:
863 case MONO_WRAPPER_ISINST: {
864 MonoClass *klass = decode_klass_ref (module, p, &p);
867 if (wrapper_type == MONO_WRAPPER_LDFLD)
868 ref->method = mono_marshal_get_ldfld_wrapper (&klass->byval_arg);
869 else if (wrapper_type == MONO_WRAPPER_LDFLDA)
870 ref->method = mono_marshal_get_ldflda_wrapper (&klass->byval_arg);
871 else if (wrapper_type == MONO_WRAPPER_STFLD)
872 ref->method = mono_marshal_get_stfld_wrapper (&klass->byval_arg);
873 else if (wrapper_type == MONO_WRAPPER_ISINST)
874 ref->method = mono_marshal_get_isinst (klass);
876 g_assert_not_reached ();
879 case MONO_WRAPPER_LDFLD_REMOTE:
880 ref->method = mono_marshal_get_ldfld_remote_wrapper (NULL);
882 case MONO_WRAPPER_STFLD_REMOTE:
883 ref->method = mono_marshal_get_stfld_remote_wrapper (NULL);
886 case MONO_WRAPPER_ALLOC: {
887 int atype = decode_value (p, &p);
889 ref->method = mono_gc_get_managed_allocator_by_type (atype, !!(mono_profiler_get_events () & MONO_PROFILE_ALLOCATIONS));
891 g_error ("Error: No managed allocator, but we need one for AOT.\nAre you using non-standard GC options?\n");
894 case MONO_WRAPPER_WRITE_BARRIER: {
895 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) {
906 kind = decode_value (p, &p);
908 /* Can't decode this */
911 if (target->wrapper_type == MONO_WRAPPER_STELEMREF) {
912 info = mono_marshal_get_wrapper_info (target);
915 if (info->subtype == subtype && info->d.virtual_stelemref.kind == kind)
916 ref->method = target;
923 g_assert_not_reached ();
927 case MONO_WRAPPER_SYNCHRONIZED: {
928 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
932 ref->method = mono_marshal_get_synchronized_wrapper (m);
935 case MONO_WRAPPER_UNKNOWN: {
936 int subtype = decode_value (p, &p);
938 if (subtype == WRAPPER_SUBTYPE_PTR_TO_STRUCTURE || subtype == WRAPPER_SUBTYPE_STRUCTURE_TO_PTR) {
939 MonoClass *klass = decode_klass_ref (module, p, &p);
946 if (klass != target->klass)
949 if (subtype == WRAPPER_SUBTYPE_PTR_TO_STRUCTURE) {
950 if (strcmp (target->name, "PtrToStructure"))
952 ref->method = mono_marshal_get_ptr_to_struct (klass);
954 if (strcmp (target->name, "StructureToPtr"))
956 ref->method = mono_marshal_get_struct_to_ptr (klass);
958 } else if (subtype == WRAPPER_SUBTYPE_SYNCHRONIZED_INNER) {
959 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
963 ref->method = mono_marshal_get_synchronized_inner_wrapper (m);
964 } else if (subtype == WRAPPER_SUBTYPE_ARRAY_ACCESSOR) {
965 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
969 ref->method = mono_marshal_get_array_accessor_wrapper (m);
970 } else if (subtype == WRAPPER_SUBTYPE_GSHAREDVT_IN) {
971 ref->method = mono_marshal_get_gsharedvt_in_wrapper ();
972 } else if (subtype == WRAPPER_SUBTYPE_GSHAREDVT_OUT) {
973 ref->method = mono_marshal_get_gsharedvt_out_wrapper ();
975 g_assert_not_reached ();
979 case MONO_WRAPPER_MANAGED_TO_MANAGED: {
980 int subtype = decode_value (p, &p);
982 if (subtype == WRAPPER_SUBTYPE_ELEMENT_ADDR) {
983 int rank = decode_value (p, &p);
984 int elem_size = decode_value (p, &p);
986 ref->method = mono_marshal_get_array_address (rank, elem_size);
987 } else if (subtype == WRAPPER_SUBTYPE_STRING_CTOR) {
990 m = decode_resolve_method_ref (module, p, &p);
996 g_assert (target->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED);
998 info = mono_marshal_get_wrapper_info (target);
999 if (info && info->subtype == subtype && info->d.string_ctor.method == m)
1000 ref->method = target;
1006 case MONO_WRAPPER_MANAGED_TO_NATIVE: {
1008 int subtype = decode_value (p, &p);
1011 if (subtype == WRAPPER_SUBTYPE_ICALL_WRAPPER) {
1016 if (strcmp (target->name, name) != 0)
1018 ref->method = target;
1020 m = decode_resolve_method_ref (module, p, &p);
1025 /* This should only happen when looking for an extra method */
1028 if (mono_marshal_method_from_wrapper (target) == m)
1029 ref->method = target;
1035 case MONO_WRAPPER_CASTCLASS: {
1036 int subtype = decode_value (p, &p);
1038 if (subtype == WRAPPER_SUBTYPE_CASTCLASS_WITH_CACHE)
1039 ref->method = mono_marshal_get_castclass_with_cache ();
1040 else if (subtype == WRAPPER_SUBTYPE_ISINST_WITH_CACHE)
1041 ref->method = mono_marshal_get_isinst_with_cache ();
1043 g_assert_not_reached ();
1046 case MONO_WRAPPER_RUNTIME_INVOKE: {
1047 int subtype = decode_value (p, &p);
1048 int pass_rgctx = decode_value (p, &p);
1053 if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_DYNAMIC) {
1054 if (strcmp (target->name, "runtime_invoke_dynamic") != 0)
1056 ref->method = target;
1057 } else if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_DIRECT) {
1058 /* Direct wrapper */
1059 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
1063 ref->method = mono_marshal_get_runtime_invoke (m, FALSE, pass_rgctx);
1064 } else if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_VIRTUAL) {
1065 /* Virtual direct wrapper */
1066 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
1070 ref->method = mono_marshal_get_runtime_invoke (m, TRUE, pass_rgctx);
1072 MonoMethodSignature *sig;
1074 sig = decode_signature_with_target (module, NULL, p, &p);
1075 info = mono_marshal_get_wrapper_info (target);
1078 if (info->subtype != subtype)
1080 if (info->d.runtime_invoke.pass_rgctx != pass_rgctx)
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 ();
1123 * Due to the way mini_get_shared_method () works, we could end up with
1124 * multiple copies of the same wrapper.
1126 if (wrapper->klass != target->klass)
1128 ref->method = target;
1130 ref->method = wrapper;
1134 * These wrappers are associated with a signature, not with a method.
1135 * Since we can't decode them into methods, they need a target method.
1140 if (wrapper_type == MONO_WRAPPER_DELEGATE_INVOKE) {
1141 subtype = decode_value (p, &p);
1142 info = mono_marshal_get_wrapper_info (target);
1144 if (info->subtype != subtype)
1147 if (subtype != WRAPPER_SUBTYPE_NONE)
1151 if (sig_matches_target (module, target, p, &p))
1152 ref->method = target;
1158 case MONO_WRAPPER_NATIVE_TO_MANAGED: {
1162 m = decode_resolve_method_ref (module, p, &p);
1165 klass = decode_klass_ref (module, p, &p);
1168 ref->method = mono_marshal_get_managed_wrapper (m, klass, 0);
1172 g_assert_not_reached ();
1174 } else if (image_index == MONO_AOT_METHODREF_METHODSPEC) {
1175 image_index = decode_value (p, &p);
1176 ref->token = decode_value (p, &p);
1178 image = load_image (module, image_index, TRUE);
1181 } else if (image_index == MONO_AOT_METHODREF_GINST) {
1184 MonoGenericContext ctx;
1187 * These methods do not have a token which resolves them, so we
1188 * resolve them immediately.
1190 klass = decode_klass_ref (module, p, &p);
1194 if (target && target->klass != klass)
1197 image_index = decode_value (p, &p);
1198 ref->token = decode_value (p, &p);
1200 image = load_image (module, image_index, TRUE);
1204 ref->method = mono_get_method_full (image, ref->token, NULL, NULL);
1208 memset (&ctx, 0, sizeof (ctx));
1210 if (FALSE && klass->generic_class) {
1211 ctx.class_inst = klass->generic_class->context.class_inst;
1212 ctx.method_inst = NULL;
1214 ref->method = mono_class_inflate_generic_method_full_checked (ref->method, klass, &ctx, &error);
1215 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
1218 memset (&ctx, 0, sizeof (ctx));
1220 if (!decode_generic_context (module, &ctx, p, &p))
1223 ref->method = mono_class_inflate_generic_method_full_checked (ref->method, klass, &ctx, &error);
1224 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
1225 } else if (image_index == MONO_AOT_METHODREF_ARRAY) {
1229 klass = decode_klass_ref (module, p, &p);
1232 method_type = decode_value (p, &p);
1233 switch (method_type) {
1235 ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank);
1238 ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank * 2);
1241 ref->method = mono_class_get_method_from_name (klass, "Get", -1);
1244 ref->method = mono_class_get_method_from_name (klass, "Address", -1);
1247 ref->method = mono_class_get_method_from_name (klass, "Set", -1);
1250 g_assert_not_reached ();
1253 if (image_index == MONO_AOT_METHODREF_LARGE_IMAGE_INDEX) {
1254 image_index = decode_value (p, &p);
1255 value = decode_value (p, &p);
1258 ref->token = MONO_TOKEN_METHOD_DEF | (value & 0xffffff);
1260 image = load_image (module, image_index, TRUE);
1273 decode_method_ref (MonoAotModule *module, MethodRef *ref, guint8 *buf, guint8 **endbuf)
1275 return decode_method_ref_with_target (module, ref, NULL, buf, endbuf);
1279 * decode_resolve_method_ref_with_target:
1281 * Similar to decode_method_ref, but resolve and return the method itself.
1284 decode_resolve_method_ref_with_target (MonoAotModule *module, MonoMethod *target, guint8 *buf, guint8 **endbuf)
1289 res = decode_method_ref_with_target (module, &ref, target, buf, endbuf);
1296 return mono_get_method (ref.image, ref.token, NULL);
1300 decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
1302 return decode_resolve_method_ref_with_target (module, NULL, buf, endbuf);
1305 #ifdef ENABLE_AOT_CACHE
1311 * - Add options for controlling the cache size
1312 * - Handle full cache by deleting old assemblies lru style
1313 * - Maybe add a threshold after an assembly is AOT compiled
1314 * - Add options for enabling this for specific main assemblies
1317 /* The cache directory */
1318 static char *cache_dir;
1320 /* The number of assemblies AOTed in this run */
1321 static int cache_count;
1323 /* Whenever to AOT in-process */
1324 static gboolean in_process;
1327 collect_assemblies (gpointer data, gpointer user_data)
1329 MonoAssembly *ass = data;
1330 GSList **l = user_data;
1332 *l = g_slist_prepend (*l, ass);
1335 #define SHA1_DIGEST_LENGTH 20
1338 * get_aot_config_hash:
1340 * Return a hash for all the version information an AOT module depends on.
1342 static G_GNUC_UNUSED char*
1343 get_aot_config_hash (MonoAssembly *assembly)
1346 GSList *l, *assembly_list = NULL;
1349 guint8 digest [SHA1_DIGEST_LENGTH];
1352 build_info = mono_get_runtime_build_info ();
1354 s = g_string_new (build_info);
1356 mono_assembly_foreach (collect_assemblies, &assembly_list);
1359 * The assembly list includes the current assembly as well, no need
1362 for (l = assembly_list; l; l = l->next) {
1363 MonoAssembly *ass = l->data;
1365 g_string_append (s, "_");
1366 g_string_append (s, ass->aname.name);
1367 g_string_append (s, "_");
1368 g_string_append (s, ass->image->guid);
1371 for (i = 0; i < s->len; ++i) {
1372 if (!isalnum (s->str [i]) && s->str [i] != '-')
1376 mono_sha1_get_digest ((guint8*)s->str, s->len, digest);
1378 digest_str = g_malloc0 ((SHA1_DIGEST_LENGTH * 2) + 1);
1379 for (i = 0; i < SHA1_DIGEST_LENGTH; ++i)
1380 sprintf (digest_str + (i * 2), "%02x", digest [i]);
1382 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: file dependencies: %s, hash %s", s->str, digest_str);
1384 g_string_free (s, TRUE);
1390 aot_cache_init (void)
1394 enable_aot_cache = TRUE;
1399 * aot_cache_load_module:
1401 * Load the AOT image corresponding to ASSEMBLY from the aot cache, AOTing it if neccessary.
1404 aot_cache_load_module (MonoAssembly *assembly, char **aot_name)
1406 MonoAotCacheConfig *config;
1408 char *fname, *tmp2, *aot_options, *failure_fname;
1420 if (image_is_dynamic (assembly->image))
1423 /* Check in the list of assemblies enabled for aot caching */
1424 config = mono_get_aot_cache_config ();
1428 MonoDomain *domain = mono_domain_get ();
1429 MonoAssembly *entry_assembly = domain->entry_assembly;
1431 // FIXME: This cannot be used for mscorlib during startup, since entry_assembly is not set yet
1432 for (l = config->apps; l; l = l->next) {
1435 if ((entry_assembly && !strcmp (entry_assembly->aname.name, n)) || (!entry_assembly && !strcmp (assembly->aname.name, n)))
1443 for (l = config->assemblies; l; l = l->next) {
1446 if (!strcmp (assembly->aname.name, n))
1456 home = g_get_home_dir ();
1459 cache_dir = g_strdup_printf ("%s/Library/Caches/mono/aot-cache", home);
1460 if (!g_file_test (cache_dir, G_FILE_TEST_EXISTS|G_FILE_TEST_IS_DIR))
1461 g_mkdir_with_parents (cache_dir, 0777);
1465 * The same assembly can be used in multiple configurations, i.e. multiple
1466 * versions of the runtime, with multiple versions of dependent assemblies etc.
1467 * To handle this, we compute a version string containing all this information, hash it,
1468 * and use the hash as a filename suffix.
1470 hash = get_aot_config_hash (assembly);
1472 tmp2 = g_strdup_printf ("%s-%s%s", assembly->image->assembly_name, hash, MONO_SOLIB_EXT);
1473 fname = g_build_filename (cache_dir, tmp2, NULL);
1477 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: loading from cache: '%s'.", fname);
1478 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
1481 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: found in cache: '%s'.", fname);
1485 if (!strcmp (assembly->aname.name, "mscorlib") && !mscorlib_aot_loaded)
1487 * Can't AOT this during startup, so we AOT it when called later from
1488 * mono_aot_get_method ().
1492 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: not found.");
1494 /* Only AOT one assembly per run to avoid slowing down execution too much */
1495 if (cache_count > 0)
1499 /* Check for previous failure */
1500 failure_fname = g_strdup_printf ("%s.failure", fname);
1501 failure_file = fopen (failure_fname, "r");
1503 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: assembly '%s' previously failed to compile '%s' ('%s')... ", assembly->image->name, fname, failure_fname);
1504 g_free (failure_fname);
1507 g_free (failure_fname);
1508 fclose (failure_file);
1511 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: compiling assembly '%s', logfile: '%s.log'... ", assembly->image->name, fname);
1514 * We need to invoke the AOT compiler here. There are multiple approaches:
1515 * - spawn a new runtime process. This can be hard when running with mkbundle, and
1516 * its hard to make the new process load the same set of assemblies.
1517 * - doing it in-process. This exposes the current process to bugs/leaks/side effects of
1519 * - fork a new process and do the work there.
1522 aot_options = g_strdup_printf ("outfile=%s,internal-logfile=%s.log%s%s", fname, fname, config->aot_options ? "," : "", config->aot_options ? config->aot_options : "");
1523 /* Maybe due this in another thread ? */
1524 res = mono_compile_assembly (assembly, mono_parse_default_optimizations (NULL), aot_options);
1526 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: compilation failed.");
1527 failure_fname = g_strdup_printf ("%s.failure", fname);
1528 failure_file = fopen (failure_fname, "a+");
1529 fclose (failure_file);
1530 g_free (failure_fname);
1532 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: compilation succeeded.");
1536 * - Avoid waiting for the aot process to finish ?
1537 * (less overhead, but multiple processes could aot the same assembly at the same time)
1546 logfile_name = g_strdup_printf ("%s/aot.log", cache_dir);
1547 logfile = fopen (logfile_name, "a+");
1548 g_free (logfile_name);
1550 dup2 (fileno (logfile), 1);
1551 dup2 (fileno (logfile), 2);
1553 aot_options = g_strdup_printf ("outfile=%s", fname);
1554 res = mono_compile_assembly (assembly, mono_parse_default_optimizations (NULL), aot_options);
1562 waitpid (pid, &exit_status, 0);
1563 if (!WIFEXITED (exit_status) && (WEXITSTATUS (exit_status) == 0))
1564 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: failed.");
1566 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: succeeded.");
1570 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
1578 aot_cache_init (void)
1583 aot_cache_load_module (MonoAssembly *assembly, char **aot_name)
1591 find_symbol (MonoDl *module, gpointer *globals, const char *name, gpointer *value)
1595 guint16 *table, *entry;
1598 char *symbol = (char*)name;
1601 symbol = g_strdup_printf ("_%s", name);
1604 /* The first entry points to the hash */
1605 table = globals [0];
1608 table_size = table [0];
1611 hash = mono_metadata_str_hash (symbol) % table_size;
1613 entry = &table [hash * 2];
1615 /* Search the hash for the index into the globals table */
1617 while (entry [0] != 0) {
1618 guint32 index = entry [0] - 1;
1619 guint32 next = entry [1];
1621 //printf ("X: %s %s\n", (char*)globals [index * 2], name);
1623 if (!strcmp (globals [index * 2], symbol)) {
1624 global_index = index;
1629 entry = &table [next * 2];
1635 if (global_index != -1)
1636 *value = globals [global_index * 2 + 1];
1643 char *err = mono_dl_symbol (module, name, value);
1651 check_usable (MonoAssembly *assembly, MonoAotFileInfo *info, char **out_msg)
1655 gboolean usable = TRUE;
1656 gboolean full_aot, safepoints;
1658 guint32 excluded_cpu_optimizations;
1660 if (strcmp (assembly->image->guid, info->assembly_guid)) {
1661 msg = g_strdup_printf ("doesn't match assembly");
1665 build_info = mono_get_runtime_build_info ();
1666 if (strlen (info->runtime_version) > 0 && strcmp (info->runtime_version, build_info)) {
1667 msg = g_strdup_printf ("compiled against runtime version '%s' while this runtime has version '%s'", info->runtime_version, build_info);
1670 g_free (build_info);
1672 full_aot = info->flags & MONO_AOT_FILE_FLAG_FULL_AOT;
1674 if (mono_aot_only && !full_aot) {
1675 msg = g_strdup_printf ("not compiled with --aot=full");
1678 if (!mono_aot_only && full_aot) {
1679 msg = g_strdup_printf ("compiled with --aot=full");
1682 if (mono_llvm_only && !(info->flags & MONO_AOT_FILE_FLAG_LLVM_ONLY)) {
1683 msg = g_strdup_printf ("not compiled with --aot=llvmonly");
1687 /* mono_arch_find_imt_method () requires this */
1688 if ((info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM) && !mono_use_llvm) {
1689 msg = g_strdup_printf ("compiled against LLVM");
1692 if (!(info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM) && mono_use_llvm) {
1693 msg = g_strdup_printf ("not compiled against LLVM");
1697 if (mini_get_debug_options ()->mdb_optimizations && !(info->flags & MONO_AOT_FILE_FLAG_DEBUG) && !full_aot) {
1698 msg = g_strdup_printf ("not compiled for debugging");
1702 mono_arch_cpu_optimizations (&excluded_cpu_optimizations);
1703 if (info->opts & excluded_cpu_optimizations) {
1704 msg = g_strdup_printf ("compiled with unsupported CPU optimizations");
1708 if (!mono_aot_only && (info->simd_opts & ~mono_arch_cpu_enumerate_simd_versions ())) {
1709 msg = g_strdup_printf ("compiled with unsupported SIMD extensions");
1715 if (info->gc_name_index != -1) {
1716 char *gc_name = (char*)&blob [info->gc_name_index];
1717 const char *current_gc_name = mono_gc_get_gc_name ();
1719 if (strcmp (current_gc_name, gc_name) != 0) {
1720 msg = g_strdup_printf ("compiled against GC %s, while the current runtime uses GC %s.\n", gc_name, current_gc_name);
1725 safepoints = info->flags & MONO_AOT_FILE_FLAG_SAFEPOINTS;
1727 if (!safepoints && mono_threads_is_coop_enabled ()) {
1728 msg = g_strdup_printf ("not compiled with safepoints");
1737 * TABLE should point to a table of call instructions. Return the address called by the INDEXth entry.
1740 get_call_table_entry (void *table, int index)
1742 #if defined(TARGET_ARM)
1747 ins_addr = (guint32*)table + index;
1749 if ((ins >> ARMCOND_SHIFT) == ARMCOND_NV) {
1751 offset = (((int)(((ins & 0xffffff) << 1) | ((ins >> 24) & 0x1))) << 7) >> 7;
1752 return (char*)ins_addr + (offset * 2) + 8 + 1;
1754 offset = (((int)ins & 0xffffff) << 8) >> 8;
1755 return (char*)ins_addr + (offset * 4) + 8;
1757 #elif defined(TARGET_ARM64)
1758 return mono_arch_get_call_target ((guint8*)table + (index * 4) + 4);
1759 #elif defined(TARGET_X86) || defined(TARGET_AMD64)
1760 /* The callee expects an ip which points after the call */
1761 return mono_arch_get_call_target ((guint8*)table + (index * 5) + 5);
1763 g_assert_not_reached ();
1771 * Initialize the shared got entries for AMODULE.
1774 init_amodule_got (MonoAotModule *amodule)
1778 MonoJumpInfo *patches;
1779 guint32 got_offsets [128];
1782 /* These can't be initialized in load_aot_module () */
1783 if (amodule->shared_got [0] || amodule->got_initializing)
1786 amodule->got_initializing = TRUE;
1788 mp = mono_mempool_new ();
1789 npatches = amodule->info.nshared_got_entries;
1790 for (i = 0; i < npatches; ++i)
1791 got_offsets [i] = i;
1792 patches = decode_patches (amodule, mp, npatches, FALSE, got_offsets);
1794 for (i = 0; i < npatches; ++i) {
1797 if (ji->type == MONO_PATCH_INFO_GC_CARD_TABLE_ADDR && !mono_gc_is_moving ()) {
1798 amodule->shared_got [i] = NULL;
1799 } else if (ji->type == MONO_PATCH_INFO_GC_NURSERY_START && !mono_gc_is_moving ()) {
1800 amodule->shared_got [i] = NULL;
1801 } else if (ji->type == MONO_PATCH_INFO_GC_NURSERY_BITS && !mono_gc_is_moving ()) {
1802 amodule->shared_got [i] = NULL;
1803 } else if (ji->type == MONO_PATCH_INFO_IMAGE) {
1804 amodule->shared_got [i] = amodule->assembly->image;
1805 } else if (ji->type == MONO_PATCH_INFO_MSCORLIB_GOT_ADDR) {
1806 if (mono_defaults.corlib) {
1807 MonoAotModule *mscorlib_amodule = mono_defaults.corlib->aot_module;
1809 if (mscorlib_amodule)
1810 amodule->shared_got [i] = mscorlib_amodule->got;
1812 amodule->shared_got [i] = amodule->got;
1814 } else if (ji->type == MONO_PATCH_INFO_AOT_MODULE) {
1815 amodule->shared_got [i] = amodule;
1817 amodule->shared_got [i] = mono_resolve_patch_target (NULL, mono_get_root_domain (), NULL, ji, FALSE);
1822 for (i = 0; i < npatches; ++i)
1823 amodule->got [i] = amodule->shared_got [i];
1825 if (amodule->llvm_got) {
1826 for (i = 0; i < npatches; ++i)
1827 amodule->llvm_got [i] = amodule->shared_got [i];
1830 mono_mempool_destroy (mp);
1834 load_aot_module (MonoAssembly *assembly, gpointer user_data)
1837 MonoAotModule *amodule;
1839 gboolean usable = TRUE;
1840 char *version_symbol = NULL;
1842 gpointer *globals = NULL;
1843 MonoAotFileInfo *info = NULL;
1846 gboolean do_load_image = TRUE;
1847 int align_double, align_int64;
1849 if (mono_compile_aot)
1852 if (assembly->image->aot_module)
1854 * Already loaded. This can happen because the assembly loading code might invoke
1855 * the assembly load hooks multiple times for the same assembly.
1859 if (image_is_dynamic (assembly->image) || assembly->ref_only)
1863 if (static_aot_modules)
1864 info = g_hash_table_lookup (static_aot_modules, assembly->aname.name);
1872 /* Statically linked AOT module */
1873 aot_name = g_strdup_printf ("%s", assembly->aname.name);
1874 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "Found statically linked AOT module '%s'.\n", aot_name);
1875 globals = info->globals;
1877 if (enable_aot_cache)
1878 sofile = aot_cache_load_module (assembly, &aot_name);
1881 aot_name = g_strdup_printf ("%s%s", assembly->image->name, MONO_SOLIB_EXT);
1883 sofile = mono_dl_open (aot_name, MONO_DL_LAZY, &err);
1886 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module '%s' not found: %s\n", aot_name, err);
1889 aot_name = g_strdup_printf ("%s/mono/aot-cache/%s/%s%s", mono_assembly_getrootdir(), MONO_ARCHITECTURE, g_path_get_basename (assembly->image->name), MONO_SOLIB_EXT);
1890 sofile = mono_dl_open (aot_name, MONO_DL_LAZY, &err);
1892 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module '%s' not found: %s\n", aot_name, err);
1900 if (!sofile && !globals) {
1901 if (mono_aot_only && assembly->image->tables [MONO_TABLE_METHOD].rows)
1902 g_error ("Failed to load AOT module '%s' in aot-only mode.\n", aot_name);
1908 find_symbol (sofile, globals, "mono_aot_version", (gpointer *) &version_symbol);
1909 find_symbol (sofile, globals, "mono_aot_file_info", (gpointer*)&info);
1912 if (version_symbol) {
1913 /* Old file format */
1914 version = atoi (version_symbol);
1917 version = info->version;
1920 if (version != MONO_AOT_FILE_VERSION) {
1921 msg = g_strdup_printf ("wrong file format version (expected %d got %d)", MONO_AOT_FILE_VERSION, version);
1924 usable = check_usable (assembly, info, &msg);
1928 if (mono_aot_only) {
1929 g_error ("Failed to load AOT module '%s' while running in aot-only mode: %s.\n", aot_name, msg);
1931 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: module %s is unusable: %s.\n", aot_name, msg);
1936 mono_dl_close (sofile);
1937 assembly->image->aot_module = NULL;
1942 align_double = MONO_ABI_ALIGNOF (double);
1943 align_int64 = MONO_ABI_ALIGNOF (gint64);
1944 g_assert (info->double_align == align_double);
1945 g_assert (info->long_align == align_int64);
1946 g_assert (info->generic_tramp_num == MONO_TRAMPOLINE_NUM);
1950 amodule = g_new0 (MonoAotModule, 1);
1951 amodule->aot_name = aot_name;
1952 amodule->assembly = assembly;
1954 memcpy (&amodule->info, info, sizeof (*info));
1956 amodule->got = amodule->info.jit_got;
1957 amodule->llvm_got = amodule->info.llvm_got;
1958 amodule->globals = globals;
1959 amodule->sofile = sofile;
1960 amodule->method_to_code = g_hash_table_new (mono_aligned_addr_hash, NULL);
1961 amodule->extra_methods = g_hash_table_new (NULL, NULL);
1962 amodule->blob = blob;
1963 amodule->shared_got = g_new0 (gpointer, info->nshared_got_entries);
1965 mono_os_mutex_init_recursive (&amodule->mutex);
1967 /* Read image table */
1969 guint32 table_len, i;
1972 table = info->image_table;
1975 table_len = *(guint32*)table;
1976 table += sizeof (guint32);
1977 amodule->image_table = g_new0 (MonoImage*, table_len);
1978 amodule->image_names = g_new0 (MonoAssemblyName, table_len);
1979 amodule->image_guids = g_new0 (char*, table_len);
1980 amodule->image_table_len = table_len;
1981 for (i = 0; i < table_len; ++i) {
1982 MonoAssemblyName *aname = &(amodule->image_names [i]);
1984 aname->name = g_strdup (table);
1985 table += strlen (table) + 1;
1986 amodule->image_guids [i] = g_strdup (table);
1987 table += strlen (table) + 1;
1989 aname->culture = g_strdup (table);
1990 table += strlen (table) + 1;
1991 memcpy (aname->public_key_token, table, strlen (table) + 1);
1992 table += strlen (table) + 1;
1994 table = ALIGN_PTR_TO (table, 8);
1995 aname->flags = *(guint32*)table;
1997 aname->major = *(guint32*)table;
1999 aname->minor = *(guint32*)table;
2001 aname->build = *(guint32*)table;
2003 aname->revision = *(guint32*)table;
2008 amodule->jit_code_start = info->jit_code_start;
2009 amodule->jit_code_end = info->jit_code_end;
2010 amodule->method_info_offsets = info->method_info_offsets;
2011 amodule->ex_info_offsets = info->ex_info_offsets;
2012 amodule->class_info_offsets = info->class_info_offsets;
2013 amodule->class_name_table = info->class_name_table;
2014 amodule->extra_method_table = info->extra_method_table;
2015 amodule->extra_method_info_offsets = info->extra_method_info_offsets;
2016 amodule->unbox_trampolines = info->unbox_trampolines;
2017 amodule->unbox_trampolines_end = info->unbox_trampolines_end;
2018 amodule->unbox_trampoline_addresses = info->unbox_trampoline_addresses;
2019 amodule->unwind_info = info->unwind_info;
2020 amodule->mem_begin = amodule->jit_code_start;
2021 amodule->mem_end = info->mem_end;
2022 amodule->plt = info->plt;
2023 amodule->plt_end = info->plt_end;
2024 amodule->mono_eh_frame = info->mono_eh_frame;
2025 amodule->trampolines [MONO_AOT_TRAMP_SPECIFIC] = info->specific_trampolines;
2026 amodule->trampolines [MONO_AOT_TRAMP_STATIC_RGCTX] = info->static_rgctx_trampolines;
2027 amodule->trampolines [MONO_AOT_TRAMP_IMT_THUNK] = info->imt_thunks;
2028 amodule->trampolines [MONO_AOT_TRAMP_GSHAREDVT_ARG] = info->gsharedvt_arg_trampolines;
2030 if (!strcmp (assembly->aname.name, "mscorlib"))
2031 mscorlib_aot_module = amodule;
2033 /* Compute method addresses */
2034 amodule->methods = g_malloc0 (amodule->info.nmethods * sizeof (gpointer));
2035 for (i = 0; i < amodule->info.nmethods; ++i) {
2038 if (amodule->info.llvm_get_method) {
2039 gpointer (*get_method) (int) = amodule->info.llvm_get_method;
2041 addr = get_method (i);
2044 /* method_addresses () contains a table of branches, since the ios linker can update those correctly */
2045 if (!addr && amodule->info.method_addresses) {
2046 addr = get_call_table_entry (amodule->info.method_addresses, i);
2048 if (addr == amodule->info.method_addresses)
2052 amodule->methods [i] = GINT_TO_POINTER (-1);
2054 amodule->methods [i] = addr;
2057 if (make_unreadable) {
2058 #ifndef TARGET_WIN32
2060 guint8 *page_start, *page_end;
2063 addr = amodule->mem_begin;
2065 len = amodule->mem_end - amodule->mem_begin;
2067 /* Round down in both directions to avoid modifying data which is not ours */
2068 page_start = (guint8 *) (((gssize) (addr)) & ~ (mono_pagesize () - 1)) + mono_pagesize ();
2069 page_end = (guint8 *) (((gssize) (addr + len)) & ~ (mono_pagesize () - 1));
2070 if (page_end > page_start) {
2071 err = mono_mprotect (page_start, (page_end - page_start), MONO_MMAP_NONE);
2072 g_assert (err == 0);
2077 /* Compute the boundaries of LLVM code */
2078 if (info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM)
2079 compute_llvm_code_range (amodule, &amodule->llvm_code_start, &amodule->llvm_code_end);
2083 if (amodule->jit_code_start) {
2084 aot_code_low_addr = MIN (aot_code_low_addr, (gsize)amodule->jit_code_start);
2085 aot_code_high_addr = MAX (aot_code_high_addr, (gsize)amodule->jit_code_end);
2087 if (amodule->llvm_code_start) {
2088 aot_code_low_addr = MIN (aot_code_low_addr, (gsize)amodule->llvm_code_start);
2089 aot_code_high_addr = MAX (aot_code_high_addr, (gsize)amodule->llvm_code_end);
2092 g_hash_table_insert (aot_modules, assembly, amodule);
2095 if (amodule->jit_code_start)
2096 mono_jit_info_add_aot_module (assembly->image, amodule->jit_code_start, amodule->jit_code_end);
2097 if (amodule->llvm_code_start)
2098 mono_jit_info_add_aot_module (assembly->image, amodule->llvm_code_start, amodule->llvm_code_end);
2100 assembly->image->aot_module = amodule;
2102 if (mono_aot_only) {
2104 find_symbol (amodule->sofile, amodule->globals, "specific_trampolines_page", (gpointer *)&code);
2105 amodule->use_page_trampolines = code != NULL;
2106 /*g_warning ("using page trampolines: %d", amodule->use_page_trampolines);*/
2110 * Register the plt region as a single trampoline so we can unwind from this code
2112 mono_tramp_info_register (
2113 mono_tramp_info_create (
2116 amodule->plt_end - amodule->plt,
2118 mono_unwind_get_cie_program ()
2124 * Since we store methoddef and classdef tokens when referring to methods/classes in
2125 * referenced assemblies, we depend on the exact versions of the referenced assemblies.
2126 * MS calls this 'hard binding'. This means we have to load all referenced assemblies
2127 * non-lazily, since we can't handle out-of-date errors later.
2128 * The cached class info also depends on the exact assemblies.
2130 #if defined(__native_client__)
2131 /* TODO: Don't 'load_image' on mscorlib due to a */
2132 /* recursive loading problem. This should be */
2133 /* removed if mscorlib is loaded from disk. */
2134 if (strncmp(assembly->aname.name, "mscorlib", 8)) {
2135 do_load_image = TRUE;
2137 do_load_image = FALSE;
2140 if (do_load_image) {
2141 for (i = 0; i < amodule->image_table_len; ++i)
2142 load_image (amodule, i, FALSE);
2145 if (amodule->out_of_date) {
2146 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: Module %s is unusable because a dependency is out-of-date.\n", assembly->image->name);
2148 g_error ("Failed to load AOT module '%s' while running in aot-only mode because a dependency cannot be found or it is out of date.\n", aot_name);
2151 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: loaded AOT Module for %s.\n", assembly->image->name);
2155 * mono_aot_register_module:
2157 * This should be called by embedding code to register AOT modules statically linked
2158 * into the executable. AOT_INFO should be the value of the
2159 * 'mono_aot_module_<ASSEMBLY_NAME>_info' global symbol from the AOT module.
2162 mono_aot_register_module (gpointer *aot_info)
2166 MonoAotFileInfo *info = (gpointer)aot_info;
2168 g_assert (info->version == MONO_AOT_FILE_VERSION);
2170 globals = info->globals;
2173 aname = info->assembly_name;
2175 /* This could be called before startup */
2179 if (!static_aot_modules)
2180 static_aot_modules = g_hash_table_new (g_str_hash, g_str_equal);
2182 g_hash_table_insert (static_aot_modules, aname, info);
2189 mono_aot_init (void)
2191 mono_os_mutex_init_recursive (&aot_mutex);
2192 mono_os_mutex_init_recursive (&aot_page_mutex);
2193 aot_modules = g_hash_table_new (NULL, NULL);
2195 #ifndef __native_client__
2196 mono_install_assembly_load_hook (load_aot_module, NULL);
2198 mono_counters_register ("Async JIT info size", MONO_COUNTER_INT|MONO_COUNTER_JIT, &async_jit_info_size);
2200 if (g_getenv ("MONO_LASTAOT"))
2201 mono_last_aot_method = atoi (g_getenv ("MONO_LASTAOT"));
2206 mono_aot_cleanup (void)
2208 if (aot_jit_icall_hash)
2209 g_hash_table_destroy (aot_jit_icall_hash);
2211 g_hash_table_destroy (aot_modules);
2215 decode_cached_class_info (MonoAotModule *module, MonoCachedClassInfo *info, guint8 *buf, guint8 **endbuf)
2221 info->vtable_size = decode_value (buf, &buf);
2222 if (info->vtable_size == -1)
2225 flags = decode_value (buf, &buf);
2226 info->ghcimpl = (flags >> 0) & 0x1;
2227 info->has_finalize = (flags >> 1) & 0x1;
2228 info->has_cctor = (flags >> 2) & 0x1;
2229 info->has_nested_classes = (flags >> 3) & 0x1;
2230 info->blittable = (flags >> 4) & 0x1;
2231 info->has_references = (flags >> 5) & 0x1;
2232 info->has_static_refs = (flags >> 6) & 0x1;
2233 info->no_special_static_fields = (flags >> 7) & 0x1;
2234 info->is_generic_container = (flags >> 8) & 0x1;
2236 if (info->has_cctor) {
2237 res = decode_method_ref (module, &ref, buf, &buf);
2240 info->cctor_token = ref.token;
2242 if (info->has_finalize) {
2243 res = decode_method_ref (module, &ref, buf, &buf);
2246 info->finalize_image = ref.image;
2247 info->finalize_token = ref.token;
2250 info->instance_size = decode_value (buf, &buf);
2251 info->class_size = decode_value (buf, &buf);
2252 info->packing_size = decode_value (buf, &buf);
2253 info->min_align = decode_value (buf, &buf);
2261 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
2264 MonoClass *klass = vtable->klass;
2265 MonoAotModule *amodule = klass->image->aot_module;
2267 MonoCachedClassInfo class_info;
2272 if (MONO_CLASS_IS_INTERFACE (klass) || klass->rank || !amodule)
2275 info = &amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
2278 err = decode_cached_class_info (amodule, &class_info, p, &p);
2282 for (i = 0; i < slot; ++i)
2283 decode_method_ref (amodule, &ref, p, &p);
2285 res = decode_method_ref (amodule, &ref, p, &p);
2288 if (ref.no_aot_trampoline)
2291 if (mono_metadata_token_index (ref.token) == 0 || mono_metadata_token_table (ref.token) != MONO_TABLE_METHOD)
2294 return mono_aot_get_method_from_token (domain, ref.image, ref.token);
2298 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
2300 MonoAotModule *amodule = klass->image->aot_module;
2304 if (klass->rank || !amodule)
2307 p = (guint8*)&amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
2309 err = decode_cached_class_info (amodule, res, p, &p);
2317 * mono_aot_get_class_from_name:
2319 * Obtains a MonoClass with a given namespace and a given name which is located in IMAGE,
2320 * using a cache stored in the AOT file.
2321 * Stores the resulting class in *KLASS if found, stores NULL otherwise.
2323 * Returns: TRUE if the klass was found/not found in the cache, FALSE if no aot file was
2327 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
2329 MonoAotModule *amodule = image->aot_module;
2330 guint16 *table, *entry;
2333 char full_name_buf [1024];
2335 const char *name2, *name_space2;
2337 guint32 cols [MONO_TYPEDEF_SIZE];
2338 GHashTable *nspace_table;
2340 if (!amodule || !amodule->class_name_table)
2343 amodule_lock (amodule);
2347 /* First look in the cache */
2348 if (!amodule->name_cache)
2349 amodule->name_cache = g_hash_table_new (g_str_hash, g_str_equal);
2350 nspace_table = g_hash_table_lookup (amodule->name_cache, name_space);
2352 *klass = g_hash_table_lookup (nspace_table, name);
2354 amodule_unlock (amodule);
2359 table_size = amodule->class_name_table [0];
2360 table = amodule->class_name_table + 1;
2362 if (name_space [0] == '\0')
2363 full_name = g_strdup_printf ("%s", name);
2365 if (strlen (name_space) + strlen (name) < 1000) {
2366 sprintf (full_name_buf, "%s.%s", name_space, name);
2367 full_name = full_name_buf;
2369 full_name = g_strdup_printf ("%s.%s", name_space, name);
2372 hash = mono_metadata_str_hash (full_name) % table_size;
2373 if (full_name != full_name_buf)
2376 entry = &table [hash * 2];
2378 if (entry [0] != 0) {
2379 t = &image->tables [MONO_TABLE_TYPEDEF];
2382 guint32 index = entry [0];
2383 guint32 next = entry [1];
2384 guint32 token = mono_metadata_make_token (MONO_TABLE_TYPEDEF, index);
2386 name_table_accesses ++;
2388 mono_metadata_decode_row (t, index - 1, cols, MONO_TYPEDEF_SIZE);
2390 name2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
2391 name_space2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
2393 if (!strcmp (name, name2) && !strcmp (name_space, name_space2)) {
2395 amodule_unlock (amodule);
2396 *klass = mono_class_get_checked (image, token, &error);
2397 if (!mono_error_ok (&error))
2398 mono_error_cleanup (&error); /* FIXME don't swallow the error */
2402 amodule_lock (amodule);
2403 nspace_table = g_hash_table_lookup (amodule->name_cache, name_space);
2404 if (!nspace_table) {
2405 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
2406 g_hash_table_insert (amodule->name_cache, (char*)name_space2, nspace_table);
2408 g_hash_table_insert (nspace_table, (char*)name2, *klass);
2409 amodule_unlock (amodule);
2415 entry = &table [next * 2];
2422 amodule_unlock (amodule);
2427 /* Compute the boundaries of the LLVM code for AMODULE. */
2429 compute_llvm_code_range (MonoAotModule *amodule, guint8 **code_start, guint8 **code_end)
2432 int version, fde_count;
2435 if (amodule->info.llvm_get_method) {
2436 gpointer (*get_method) (int) = amodule->info.llvm_get_method;
2438 *code_start = get_method (-1);
2439 *code_end = get_method (-2);
2441 g_assert (*code_end > *code_start);
2445 g_assert (amodule->mono_eh_frame);
2447 p = amodule->mono_eh_frame;
2449 /* p points to data emitted by LLVM in DwarfException::EmitMonoEHFrame () */
2453 g_assert (version == 3);
2456 p = ALIGN_PTR_TO (p, 4);
2458 fde_count = *(guint32*)p;
2462 if (fde_count > 0) {
2463 *code_start = amodule->methods [table [0]];
2464 *code_end = (guint8*)amodule->methods [table [(fde_count - 1) * 2]] + table [fde_count * 2];
2472 is_llvm_code (MonoAotModule *amodule, guint8 *code)
2474 if ((guint8*)code >= amodule->llvm_code_start && (guint8*)code < amodule->llvm_code_end)
2481 is_thumb_code (MonoAotModule *amodule, guint8 *code)
2483 if (is_llvm_code (amodule, code) && (amodule->info.flags & MONO_AOT_FILE_FLAG_LLVM_THUMB))
2490 * decode_llvm_mono_eh_frame:
2492 * Decode the EH information emitted by our modified LLVM compiler and construct a
2493 * MonoJitInfo structure from it.
2494 * LOCKING: Acquires the domain lock.
2497 decode_llvm_mono_eh_frame (MonoAotModule *amodule, MonoDomain *domain,
2498 MonoMethod *method, guint8 *code, guint32 code_len,
2499 MonoJitExceptionInfo *clauses, int num_clauses,
2500 MonoJitInfoFlags flags,
2502 int *this_reg, int *this_offset)
2504 guint8 *p, *code1, *code2;
2505 guint8 *fde, *cie, *code_start, *code_end;
2506 int version, fde_count;
2508 int i, pos, left, right;
2509 MonoJitExceptionInfo *ei;
2510 guint32 fde_len, ei_len, nested_len, nindex;
2511 gpointer *type_info;
2513 MonoLLVMFDEInfo info;
2515 if (!amodule->mono_eh_frame) {
2516 jinfo = mono_domain_alloc0_lock_free (domain, mono_jit_info_size (flags, num_clauses, 0));
2517 mono_jit_info_init (jinfo, method, code, code_len, flags, num_clauses, 0);
2518 memcpy (jinfo->clauses, clauses, num_clauses * sizeof (MonoJitExceptionInfo));
2522 g_assert (amodule->mono_eh_frame && code);
2524 p = amodule->mono_eh_frame;
2526 /* p points to data emitted by LLVM in DwarfMonoException::EmitMonoEHFrame () */
2530 g_assert (version == 3);
2532 /* func_encoding = *p; */
2534 p = ALIGN_PTR_TO (p, 4);
2536 fde_count = *(guint32*)p;
2540 /* There is +1 entry in the table */
2541 cie = p + ((fde_count + 1) * 8);
2543 /* Binary search in the table to find the entry for code */
2547 pos = (left + right) / 2;
2549 /* The table contains method index/fde offset pairs */
2550 g_assert (table [(pos * 2)] != -1);
2551 code1 = amodule->methods [table [(pos * 2)]];
2552 if (pos + 1 == fde_count) {
2553 code2 = amodule->llvm_code_end;
2555 g_assert (table [(pos + 1) * 2] != -1);
2556 code2 = amodule->methods [table [(pos + 1) * 2]];
2561 else if (code >= code2)
2567 code_start = amodule->methods [table [(pos * 2)]];
2568 if (pos + 1 == fde_count) {
2569 /* The +1 entry in the table contains the length of the last method */
2570 int len = table [(pos + 1) * 2];
2571 code_end = code_start + len;
2573 code_end = amodule->methods [table [(pos + 1) * 2]];
2576 code_len = code_end - code_start;
2578 g_assert (code >= code_start && code < code_end);
2580 if (is_thumb_code (amodule, code_start))
2581 /* Clear thumb flag */
2582 code_start = (guint8*)(((mgreg_t)code_start) & ~1);
2584 fde = amodule->mono_eh_frame + table [(pos * 2) + 1];
2585 /* This won't overflow because there is +1 entry in the table */
2586 fde_len = table [(pos * 2) + 2 + 1] - table [(pos * 2) + 1];
2588 mono_unwind_decode_llvm_mono_fde (fde, fde_len, cie, code_start, &info);
2590 ei_len = info.ex_info_len;
2591 type_info = info.type_info;
2592 *this_reg = info.this_reg;
2593 *this_offset = info.this_offset;
2595 /* Count number of nested clauses */
2597 for (i = 0; i < ei_len; ++i) {
2598 /* This might be unaligned */
2599 gint32 cindex1 = read32 (type_info [i]);
2602 for (l = nesting [cindex1]; l; l = l->next)
2607 * LLVM might represent one IL region with multiple regions, so have to
2608 * allocate a new JI.
2611 mono_domain_alloc0_lock_free (domain, mono_jit_info_size (flags, ei_len + nested_len, 0));
2612 mono_jit_info_init (jinfo, method, code, code_len, flags, ei_len + nested_len, 0);
2614 jinfo->unwind_info = mono_cache_unwind_info (info.unw_info, info.unw_info_len);
2615 /* This signals that unwind_info points to a normal cached unwind info */
2616 jinfo->from_aot = 0;
2617 jinfo->from_llvm = 1;
2619 for (i = 0; i < ei_len; ++i) {
2621 * clauses contains the original IL exception info saved by the AOT
2622 * compiler, we have to combine that with the information produced by LLVM
2624 /* The type_info entries contain IL clause indexes */
2625 int clause_index = read32 (type_info [i]);
2626 MonoJitExceptionInfo *jei = &jinfo->clauses [i];
2627 MonoJitExceptionInfo *orig_jei = &clauses [clause_index];
2629 g_assert (clause_index < num_clauses);
2630 jei->flags = orig_jei->flags;
2631 jei->data.catch_class = orig_jei->data.catch_class;
2633 jei->try_start = ei [i].try_start;
2634 jei->try_end = ei [i].try_end;
2635 jei->handler_start = ei [i].handler_start;
2636 jei->clause_index = clause_index;
2638 if (is_thumb_code (amodule, jei->try_start)) {
2639 jei->try_start = (void*)((mgreg_t)jei->try_start & ~1);
2640 jei->try_end = (void*)((mgreg_t)jei->try_end & ~1);
2641 /* Make sure we transition to thumb when a handler starts */
2642 jei->handler_start = (void*)((mgreg_t)jei->handler_start + 1);
2646 /* See exception_cb () in mini-llvm.c as to why this is needed */
2648 for (i = 0; i < ei_len; ++i) {
2649 gint32 cindex1 = read32 (type_info [i]);
2652 for (l = nesting [cindex1]; l; l = l->next) {
2653 gint32 nesting_cindex = GPOINTER_TO_INT (l->data);
2654 MonoJitExceptionInfo *nesting_ei;
2655 MonoJitExceptionInfo *nesting_clause = &clauses [nesting_cindex];
2657 nesting_ei = &jinfo->clauses [nindex];
2660 memcpy (nesting_ei, &jinfo->clauses [i], sizeof (MonoJitExceptionInfo));
2661 nesting_ei->flags = nesting_clause->flags;
2662 nesting_ei->data.catch_class = nesting_clause->data.catch_class;
2663 nesting_ei->clause_index = nesting_cindex;
2666 g_assert (nindex == ei_len + nested_len);
2672 alloc0_jit_info_data (MonoDomain *domain, int size, gboolean async_context)
2676 if (async_context) {
2677 res = mono_domain_alloc0_lock_free (domain, size);
2678 InterlockedExchangeAdd (&async_jit_info_size, size);
2680 res = mono_domain_alloc0 (domain, size);
2686 * LOCKING: Acquires the domain lock.
2687 * In async context, this is async safe.
2690 decode_exception_debug_info (MonoAotModule *amodule, MonoDomain *domain,
2691 MonoMethod *method, guint8* ex_info,
2692 guint8 *code, guint32 code_len)
2694 int i, buf_len, num_clauses, len;
2696 MonoJitInfoFlags flags = JIT_INFO_NONE;
2697 guint unwind_info, eflags;
2698 gboolean has_generic_jit_info, has_dwarf_unwind_info, has_clauses, has_seq_points, has_try_block_holes, has_arch_eh_jit_info;
2699 gboolean from_llvm, has_gc_map;
2701 int try_holes_info_size, num_holes;
2702 int this_reg = 0, this_offset = 0;
2705 /* Load the method info from the AOT file */
2706 async = mono_thread_info_is_async_context ();
2709 eflags = decode_value (p, &p);
2710 has_generic_jit_info = (eflags & 1) != 0;
2711 has_dwarf_unwind_info = (eflags & 2) != 0;
2712 has_clauses = (eflags & 4) != 0;
2713 has_seq_points = (eflags & 8) != 0;
2714 from_llvm = (eflags & 16) != 0;
2715 has_try_block_holes = (eflags & 32) != 0;
2716 has_gc_map = (eflags & 64) != 0;
2717 has_arch_eh_jit_info = (eflags & 128) != 0;
2719 if (has_dwarf_unwind_info) {
2720 unwind_info = decode_value (p, &p);
2721 g_assert (unwind_info < (1 << 30));
2723 unwind_info = decode_value (p, &p);
2725 if (has_generic_jit_info)
2726 flags |= JIT_INFO_HAS_GENERIC_JIT_INFO;
2728 if (has_try_block_holes) {
2729 num_holes = decode_value (p, &p);
2730 flags |= JIT_INFO_HAS_TRY_BLOCK_HOLES;
2731 try_holes_info_size = sizeof (MonoTryBlockHoleTableJitInfo) + num_holes * sizeof (MonoTryBlockHoleJitInfo);
2733 num_holes = try_holes_info_size = 0;
2736 if (has_arch_eh_jit_info) {
2737 flags |= JIT_INFO_HAS_ARCH_EH_INFO;
2738 /* Overwrite the original code_len which includes alignment padding */
2739 code_len = decode_value (p, &p);
2742 /* Exception table */
2744 num_clauses = decode_value (p, &p);
2749 MonoJitExceptionInfo *clauses;
2756 * Part of the info is encoded by the AOT compiler, the rest is in the .eh_frame
2759 clauses = g_new0 (MonoJitExceptionInfo, num_clauses);
2760 nesting = g_new0 (GSList*, num_clauses);
2762 for (i = 0; i < num_clauses; ++i) {
2763 MonoJitExceptionInfo *ei = &clauses [i];
2765 ei->flags = decode_value (p, &p);
2767 if (decode_value (p, &p))
2768 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
2770 ei->clause_index = i;
2772 ei->try_offset = decode_value (p, &p);
2773 ei->try_len = decode_value (p, &p);
2774 ei->handler_offset = decode_value (p, &p);
2775 ei->handler_len = decode_value (p, &p);
2777 /* Read the list of nesting clauses */
2779 int nesting_index = decode_value (p, &p);
2780 if (nesting_index == -1)
2782 nesting [i] = g_slist_prepend (nesting [i], GINT_TO_POINTER (nesting_index));
2786 jinfo = decode_llvm_mono_eh_frame (amodule, domain, method, code, code_len, clauses, num_clauses, flags, nesting, &this_reg, &this_offset);
2789 for (i = 0; i < num_clauses; ++i)
2790 g_slist_free (nesting [i]);
2793 len = mono_jit_info_size (flags, num_clauses, num_holes);
2794 jinfo = alloc0_jit_info_data (domain, len, async);
2795 mono_jit_info_init (jinfo, method, code, code_len, flags, num_clauses, num_holes);
2797 for (i = 0; i < jinfo->num_clauses; ++i) {
2798 MonoJitExceptionInfo *ei = &jinfo->clauses [i];
2800 ei->flags = decode_value (p, &p);
2802 #ifdef MONO_CONTEXT_SET_LLVM_EXC_REG
2803 /* Not used for catch clauses */
2804 if (ei->flags != MONO_EXCEPTION_CLAUSE_NONE)
2805 ei->exvar_offset = decode_value (p, &p);
2807 ei->exvar_offset = decode_value (p, &p);
2810 if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER || ei->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
2811 ei->data.filter = code + decode_value (p, &p);
2813 int len = decode_value (p, &p);
2819 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
2823 ei->try_start = code + decode_value (p, &p);
2824 ei->try_end = code + decode_value (p, &p);
2825 ei->handler_start = code + decode_value (p, &p);
2828 jinfo->unwind_info = unwind_info;
2829 jinfo->domain_neutral = 0;
2830 jinfo->from_aot = 1;
2833 if (has_try_block_holes) {
2834 MonoTryBlockHoleTableJitInfo *table;
2836 g_assert (jinfo->has_try_block_holes);
2838 table = mono_jit_info_get_try_block_hole_table_info (jinfo);
2841 table->num_holes = (guint16)num_holes;
2842 for (i = 0; i < num_holes; ++i) {
2843 MonoTryBlockHoleJitInfo *hole = &table->holes [i];
2844 hole->clause = decode_value (p, &p);
2845 hole->length = decode_value (p, &p);
2846 hole->offset = decode_value (p, &p);
2850 if (has_arch_eh_jit_info) {
2851 MonoArchEHJitInfo *eh_info;
2853 g_assert (jinfo->has_arch_eh_info);
2855 eh_info = mono_jit_info_get_arch_eh_info (jinfo);
2856 eh_info->stack_size = decode_value (p, &p);
2857 eh_info->epilog_size = decode_value (p, &p);
2861 /* The rest is not needed in async mode */
2862 jinfo->async = TRUE;
2863 jinfo->d.aot_info = amodule;
2868 if (has_generic_jit_info) {
2869 MonoGenericJitInfo *gi;
2872 g_assert (jinfo->has_generic_jit_info);
2874 gi = mono_jit_info_get_generic_jit_info (jinfo);
2877 gi->nlocs = decode_value (p, &p);
2879 gi->locations = alloc0_jit_info_data (domain, gi->nlocs * sizeof (MonoDwarfLocListEntry), async);
2880 for (i = 0; i < gi->nlocs; ++i) {
2881 MonoDwarfLocListEntry *entry = &gi->locations [i];
2883 entry->is_reg = decode_value (p, &p);
2884 entry->reg = decode_value (p, &p);
2886 entry->offset = decode_value (p, &p);
2888 entry->from = decode_value (p, &p);
2889 entry->to = decode_value (p, &p);
2894 gi->has_this = this_reg != -1;
2895 gi->this_reg = this_reg;
2896 gi->this_offset = this_offset;
2898 gi->has_this = decode_value (p, &p);
2899 gi->this_reg = decode_value (p, &p);
2900 gi->this_offset = decode_value (p, &p);
2904 len = decode_value (p, &p);
2908 jinfo->d.method = decode_resolve_method_ref (amodule, p, &p);
2910 gi->generic_sharing_context = g_new0 (MonoGenericSharingContext, 1);
2911 if (decode_value (p, &p)) {
2913 MonoGenericSharingContext *gsctx = gi->generic_sharing_context;
2915 gsctx->is_gsharedvt = TRUE;
2919 if (method && has_seq_points) {
2920 MonoSeqPointInfo *seq_points;
2922 p += mono_seq_point_info_read (&seq_points, p, FALSE);
2924 mono_domain_lock (domain);
2925 g_hash_table_insert (domain_jit_info (domain)->seq_points, method, seq_points);
2926 mono_domain_unlock (domain);
2929 /* Load debug info */
2930 buf_len = decode_value (p, &p);
2932 mono_debug_add_aot_method (domain, method, code, p, buf_len);
2936 int map_size = decode_value (p, &p);
2937 /* The GC map requires 4 bytes of alignment */
2938 while ((guint64)(gsize)p % 4)
2944 if (amodule != jinfo->d.method->klass->image->aot_module) {
2947 ji_to_amodule = g_hash_table_new (NULL, NULL);
2948 g_hash_table_insert (ji_to_amodule, jinfo, amodule);
2956 amodule_contains_code_addr (MonoAotModule *amodule, guint8 *code)
2958 return (code >= amodule->jit_code_start && code <= amodule->jit_code_end) ||
2959 (code >= amodule->llvm_code_start && code <= amodule->llvm_code_end);
2963 * mono_aot_get_unwind_info:
2965 * Return a pointer to the DWARF unwind info belonging to JI.
2968 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
2970 MonoAotModule *amodule;
2972 guint8 *code = ji->code_start;
2975 amodule = ji->d.aot_info;
2977 amodule = jinfo_get_method (ji)->klass->image->aot_module;
2979 g_assert (ji->from_aot);
2981 if (!amodule_contains_code_addr (amodule, code)) {
2982 /* ji belongs to a different aot module than amodule */
2984 g_assert (ji_to_amodule);
2985 amodule = g_hash_table_lookup (ji_to_amodule, ji);
2987 g_assert (amodule_contains_code_addr (amodule, code));
2991 p = amodule->unwind_info + ji->unwind_info;
2992 *unwind_info_len = decode_value (p, &p);
2997 msort_method_addresses_internal (gpointer *array, int *indexes, int lo, int hi, gpointer *scratch, int *scratch_indexes)
2999 int mid = (lo + hi) / 2;
3006 for (i = lo; i < hi; ++i)
3007 if (array [i] > array [i + 1])
3010 /* Already sorted */
3014 msort_method_addresses_internal (array, indexes, lo, mid, scratch, scratch_indexes);
3015 msort_method_addresses_internal (array, indexes, mid + 1, hi, scratch, scratch_indexes);
3017 if (array [mid] < array [mid + 1])
3023 for (i = lo; i <= hi; i ++) {
3024 if (t_lo <= mid && ((t_hi > hi) || array [t_lo] < array [t_hi])) {
3025 scratch [i] = array [t_lo];
3026 scratch_indexes [i] = indexes [t_lo];
3029 scratch [i] = array [t_hi];
3030 scratch_indexes [i] = indexes [t_hi];
3034 for (i = lo; i <= hi; ++i) {
3035 array [i] = scratch [i];
3036 indexes [i] = scratch_indexes [i];
3041 msort_method_addresses (gpointer *array, int *indexes, int len)
3044 int *scratch_indexes;
3046 scratch = g_new (gpointer, len);
3047 scratch_indexes = g_new (int, len);
3048 msort_method_addresses_internal (array, indexes, 0, len - 1, scratch, scratch_indexes);
3050 g_free (scratch_indexes);
3054 * mono_aot_find_jit_info:
3056 * In async context, the resulting MonoJitInfo will not have its method field set, and it will not be added
3057 * to the jit info tables.
3058 * FIXME: Large sizes in the lock free allocator
3061 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
3063 int pos, left, right, code_len;
3064 int method_index, table_len;
3066 MonoAotModule *amodule = image->aot_module;
3067 MonoMethod *method = NULL;
3069 guint8 *code, *ex_info, *p;
3073 guint8 *code1, *code2;
3080 nmethods = amodule->info.nmethods;
3082 if (domain != mono_get_root_domain ())
3086 if (!amodule_contains_code_addr (amodule, addr))
3089 async = mono_thread_info_is_async_context ();
3091 /* Compute a sorted table mapping code to method indexes. */
3092 if (!amodule->sorted_methods) {
3094 gpointer *methods = g_new0 (gpointer, nmethods);
3095 int *method_indexes = g_new0 (int, nmethods);
3096 int methods_len = 0;
3098 for (i = 0; i < nmethods; ++i) {
3099 /* Skip the -1 entries to speed up sorting */
3100 if (amodule->methods [i] == GINT_TO_POINTER (-1))
3102 methods [methods_len] = amodule->methods [i];
3103 method_indexes [methods_len] = i;
3106 /* Use a merge sort as this is mostly sorted */
3107 msort_method_addresses (methods, method_indexes, methods_len);
3108 for (i = 0; i < methods_len -1; ++i)
3109 g_assert (methods [i] <= methods [i + 1]);
3110 amodule->sorted_methods_len = methods_len;
3111 if (InterlockedCompareExchangePointer ((gpointer*)&amodule->sorted_methods, methods, NULL) != NULL)
3112 /* Somebody got in before us */
3114 if (InterlockedCompareExchangePointer ((gpointer*)&amodule->sorted_method_indexes, method_indexes, NULL) != NULL)
3115 /* Somebody got in before us */
3116 g_free (method_indexes);
3119 /* Binary search in the sorted_methods table */
3120 methods = amodule->sorted_methods;
3121 methods_len = amodule->sorted_methods_len;
3124 right = methods_len;
3126 pos = (left + right) / 2;
3128 code1 = methods [pos];
3129 if (pos + 1 == methods_len) {
3130 if (code1 >= amodule->jit_code_start && code1 < amodule->jit_code_end)
3131 code2 = amodule->jit_code_end;
3133 code2 = amodule->llvm_code_end;
3135 code2 = methods [pos + 1];
3140 else if (code >= code2)
3146 g_assert (addr >= methods [pos]);
3147 if (pos + 1 < methods_len)
3148 g_assert (addr < methods [pos + 1]);
3149 method_index = amodule->sorted_method_indexes [pos];
3151 /* In async mode, jinfo is not added to the normal jit info table, so have to cache it ourselves */
3153 JitInfoMap *table = amodule->async_jit_info_table;
3157 len = table [0].method_index;
3158 for (i = 1; i < len; ++i) {
3159 if (table [i].method_index == method_index)
3160 return table [i].jinfo;
3165 code = amodule->methods [method_index];
3166 ex_info = &amodule->blob [mono_aot_get_offset (amodule->ex_info_offsets, method_index)];
3168 if (pos == methods_len - 1) {
3169 if (code >= amodule->jit_code_start && code < amodule->jit_code_end)
3170 code_len = amodule->jit_code_end - code;
3172 code_len = amodule->llvm_code_end - code;
3174 code_len = (guint8*)methods [pos + 1] - (guint8*)methods [pos];
3177 g_assert ((guint8*)code <= (guint8*)addr && (guint8*)addr < (guint8*)code + code_len);
3179 /* Might be a wrapper/extra method */
3181 if (amodule->extra_methods) {
3182 amodule_lock (amodule);
3183 method = g_hash_table_lookup (amodule->extra_methods, GUINT_TO_POINTER (method_index));
3184 amodule_unlock (amodule);
3190 if (method_index >= image->tables [MONO_TABLE_METHOD].rows) {
3192 * This is hit for extra methods which are called directly, so they are
3193 * not in amodule->extra_methods.
3195 table_len = amodule->extra_method_info_offsets [0];
3196 table = amodule->extra_method_info_offsets + 1;
3203 pos = ((left + right) / 2);
3205 g_assert (pos < table_len);
3207 if (table [pos * 2] < method_index)
3209 else if (table [pos * 2] > method_index)
3215 p = amodule->blob + table [(pos * 2) + 1];
3216 method = decode_resolve_method_ref (amodule, p, &p);
3218 /* Happens when a random address is passed in which matches a not-yey called wrapper encoded using its name */
3221 token = mono_metadata_make_token (MONO_TABLE_METHOD, method_index + 1);
3222 method = mono_get_method (image, token, NULL);
3229 //printf ("F: %s\n", mono_method_full_name (method, TRUE));
3231 jinfo = decode_exception_debug_info (amodule, domain, method, ex_info, code, code_len);
3233 g_assert ((guint8*)addr >= (guint8*)jinfo->code_start);
3235 /* Add it to the normal JitInfo tables */
3237 JitInfoMap *old_table, *new_table;
3241 * Use a simple inmutable table with linear search to cache async jit info entries.
3242 * This assumes that the number of entries is small.
3245 /* Copy the table, adding a new entry at the end */
3246 old_table = amodule->async_jit_info_table;
3248 len = old_table[0].method_index;
3251 new_table = alloc0_jit_info_data (domain, (len + 1) * sizeof (JitInfoMap), async);
3253 memcpy (new_table, old_table, len * sizeof (JitInfoMap));
3254 new_table [0].method_index = len + 1;
3255 new_table [len].method_index = method_index;
3256 new_table [len].jinfo = jinfo;
3258 mono_memory_barrier ();
3259 if (InterlockedCompareExchangePointer ((gpointer)&amodule->async_jit_info_table, new_table, old_table) == old_table)
3263 mono_jit_info_table_add (domain, jinfo);
3266 if ((guint8*)addr >= (guint8*)jinfo->code_start + jinfo->code_size)
3267 /* addr is in the padding between methods, see the adjustment of code_size in decode_exception_debug_info () */
3274 decode_patch (MonoAotModule *aot_module, MonoMemPool *mp, MonoJumpInfo *ji, guint8 *buf, guint8 **endbuf)
3282 case MONO_PATCH_INFO_METHOD:
3283 case MONO_PATCH_INFO_METHOD_JUMP:
3284 case MONO_PATCH_INFO_ICALL_ADDR:
3285 case MONO_PATCH_INFO_METHOD_RGCTX:
3286 case MONO_PATCH_INFO_METHOD_CODE_SLOT: {
3290 res = decode_method_ref (aot_module, &ref, p, &p);
3294 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)) {
3295 ji->data.target = mono_create_ftnptr (mono_domain_get (), mono_create_jit_trampoline_from_token (ref.image, ref.token));
3296 ji->type = MONO_PATCH_INFO_ABS;
3300 ji->data.method = ref.method;
3302 ji->data.method = mono_get_method (ref.image, ref.token, NULL);
3303 g_assert (ji->data.method);
3304 mono_class_init (ji->data.method->klass);
3308 case MONO_PATCH_INFO_INTERNAL_METHOD:
3309 case MONO_PATCH_INFO_JIT_ICALL_ADDR: {
3310 guint32 len = decode_value (p, &p);
3312 ji->data.name = (char*)p;
3316 case MONO_PATCH_INFO_METHODCONST:
3318 ji->data.method = decode_resolve_method_ref (aot_module, p, &p);
3319 if (!ji->data.method)
3322 case MONO_PATCH_INFO_VTABLE:
3323 case MONO_PATCH_INFO_CLASS:
3324 case MONO_PATCH_INFO_IID:
3325 case MONO_PATCH_INFO_ADJUSTED_IID:
3327 ji->data.klass = decode_klass_ref (aot_module, p, &p);
3328 if (!ji->data.klass)
3331 case MONO_PATCH_INFO_DELEGATE_TRAMPOLINE:
3332 ji->data.del_tramp = mono_mempool_alloc0 (mp, sizeof (MonoDelegateClassMethodPair));
3333 ji->data.del_tramp->klass = decode_klass_ref (aot_module, p, &p);
3334 if (!ji->data.del_tramp->klass)
3336 if (decode_value (p, &p)) {
3337 ji->data.del_tramp->method = decode_resolve_method_ref (aot_module, p, &p);
3338 if (!ji->data.del_tramp->method)
3341 ji->data.del_tramp->is_virtual = decode_value (p, &p) ? TRUE : FALSE;
3343 case MONO_PATCH_INFO_IMAGE:
3344 ji->data.image = load_image (aot_module, decode_value (p, &p), TRUE);
3345 if (!ji->data.image)
3348 case MONO_PATCH_INFO_FIELD:
3349 case MONO_PATCH_INFO_SFLDA:
3351 ji->data.field = decode_field_info (aot_module, p, &p);
3352 if (!ji->data.field)
3355 case MONO_PATCH_INFO_SWITCH:
3356 ji->data.table = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoBBTable));
3357 ji->data.table->table_size = decode_value (p, &p);
3358 table = mono_domain_alloc (mono_domain_get (), sizeof (gpointer) * ji->data.table->table_size);
3359 ji->data.table->table = (MonoBasicBlock**)table;
3360 for (i = 0; i < ji->data.table->table_size; i++)
3361 table [i] = (gpointer)(gssize)decode_value (p, &p);
3363 case MONO_PATCH_INFO_R4: {
3366 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (float));
3367 val = decode_value (p, &p);
3368 *(float*)ji->data.target = *(float*)&val;
3371 case MONO_PATCH_INFO_R8: {
3375 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (double));
3377 val [0] = decode_value (p, &p);
3378 val [1] = decode_value (p, &p);
3379 v = ((guint64)val [1] << 32) | ((guint64)val [0]);
3380 *(double*)ji->data.target = *(double*)&v;
3383 case MONO_PATCH_INFO_LDSTR:
3384 image = load_image (aot_module, decode_value (p, &p), TRUE);
3387 ji->data.token = mono_jump_info_token_new (mp, image, MONO_TOKEN_STRING + decode_value (p, &p));
3389 case MONO_PATCH_INFO_RVA:
3390 case MONO_PATCH_INFO_DECLSEC:
3391 case MONO_PATCH_INFO_LDTOKEN:
3392 case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
3394 image = load_image (aot_module, decode_value (p, &p), TRUE);
3397 ji->data.token = mono_jump_info_token_new (mp, image, decode_value (p, &p));
3399 ji->data.token->has_context = decode_value (p, &p);
3400 if (ji->data.token->has_context) {
3401 gboolean res = decode_generic_context (aot_module, &ji->data.token->context, p, &p);
3406 case MONO_PATCH_INFO_EXC_NAME:
3407 ji->data.klass = decode_klass_ref (aot_module, p, &p);
3408 if (!ji->data.klass)
3410 ji->data.name = ji->data.klass->name;
3412 case MONO_PATCH_INFO_METHOD_REL:
3413 ji->data.offset = decode_value (p, &p);
3415 case MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG:
3416 case MONO_PATCH_INFO_GC_CARD_TABLE_ADDR:
3417 case MONO_PATCH_INFO_GC_NURSERY_START:
3418 case MONO_PATCH_INFO_GC_NURSERY_BITS:
3419 case MONO_PATCH_INFO_JIT_TLS_ID:
3421 case MONO_PATCH_INFO_CASTCLASS_CACHE:
3422 ji->data.index = decode_value (p, &p);
3424 case MONO_PATCH_INFO_RGCTX_FETCH:
3425 case MONO_PATCH_INFO_RGCTX_SLOT_INDEX: {
3427 MonoJumpInfoRgctxEntry *entry;
3428 guint32 offset, val;
3431 offset = decode_value (p, &p);
3432 val = decode_value (p, &p);
3434 entry = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
3435 p2 = aot_module->blob + offset;
3436 entry->method = decode_resolve_method_ref (aot_module, p2, &p2);
3437 entry->in_mrgctx = ((val & 1) > 0) ? TRUE : FALSE;
3438 entry->info_type = (val >> 1) & 0xff;
3439 entry->data = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
3440 entry->data->type = (val >> 9) & 0xff;
3442 res = decode_patch (aot_module, mp, entry->data, p, &p);
3445 ji->data.rgctx_entry = entry;
3448 case MONO_PATCH_INFO_SEQ_POINT_INFO:
3449 case MONO_PATCH_INFO_AOT_MODULE:
3450 case MONO_PATCH_INFO_MSCORLIB_GOT_ADDR:
3452 case MONO_PATCH_INFO_SIGNATURE:
3453 ji->data.target = decode_signature (aot_module, p, &p);
3455 case MONO_PATCH_INFO_TLS_OFFSET:
3456 ji->data.target = GINT_TO_POINTER (decode_value (p, &p));
3458 case MONO_PATCH_INFO_GSHAREDVT_CALL: {
3459 MonoJumpInfoGSharedVtCall *info = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoGSharedVtCall));
3460 info->sig = decode_signature (aot_module, p, &p);
3461 g_assert (info->sig);
3462 info->method = decode_resolve_method_ref (aot_module, p, &p);
3463 g_assert (info->method);
3465 ji->data.target = info;
3468 case MONO_PATCH_INFO_GSHAREDVT_METHOD: {
3469 MonoGSharedVtMethodInfo *info = mono_mempool_alloc0 (mp, sizeof (MonoGSharedVtMethodInfo));
3472 info->method = decode_resolve_method_ref (aot_module, p, &p);
3473 g_assert (info->method);
3474 info->num_entries = decode_value (p, &p);
3475 info->count_entries = info->num_entries;
3476 info->entries = mono_mempool_alloc0 (mp, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->num_entries);
3477 for (i = 0; i < info->num_entries; ++i) {
3478 MonoRuntimeGenericContextInfoTemplate *template = &info->entries [i];
3480 template->info_type = decode_value (p, &p);
3481 switch (mini_rgctx_info_type_to_patch_info_type (template->info_type)) {
3482 case MONO_PATCH_INFO_CLASS: {
3483 MonoClass *klass = decode_klass_ref (aot_module, p, &p);
3486 template->data = &klass->byval_arg;
3489 case MONO_PATCH_INFO_FIELD:
3490 template->data = decode_field_info (aot_module, p, &p);
3491 if (!template->data)
3495 g_assert_not_reached ();
3499 ji->data.target = info;
3502 case MONO_PATCH_INFO_LDSTR_LIT: {
3503 int len = decode_value (p, &p);
3506 s = mono_mempool_alloc0 (mp, len + 1);
3507 memcpy (s, p, len + 1);
3510 ji->data.target = s;
3513 case MONO_PATCH_INFO_VIRT_METHOD: {
3514 MonoJumpInfoVirtMethod *info = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoVirtMethod));
3516 info->klass = decode_klass_ref (aot_module, p, &p);
3517 g_assert (info->klass);
3518 info->method = decode_resolve_method_ref (aot_module, p, &p);
3519 g_assert (info->method);
3521 ji->data.target = info;
3524 case MONO_PATCH_INFO_GC_SAFE_POINT_FLAG:
3526 case MONO_PATCH_INFO_AOT_JIT_INFO:
3527 ji->data.index = decode_value (p, &p);
3530 g_warning ("unhandled type %d", ji->type);
3531 g_assert_not_reached ();
3545 * Decode a list of patches identified by the got offsets in GOT_OFFSETS. Return an array of
3546 * MonoJumpInfo structures allocated from MP.
3548 static MonoJumpInfo*
3549 decode_patches (MonoAotModule *amodule, MonoMemPool *mp, int n_patches, gboolean llvm, guint32 *got_offsets)
3551 MonoJumpInfo *patches;
3554 guint32 *got_info_offsets;
3559 got = amodule->llvm_got;
3560 got_info_offsets = amodule->info.llvm_got_info_offsets;
3563 got_info_offsets = amodule->info.got_info_offsets;
3566 patches = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo) * n_patches);
3567 for (i = 0; i < n_patches; ++i) {
3568 guint8 *p = amodule->blob + mono_aot_get_offset (got_info_offsets, got_offsets [i]);
3571 ji->type = decode_value (p, &p);
3573 /* See load_method () for SFLDA */
3574 if (got && got [got_offsets [i]] && ji->type != MONO_PATCH_INFO_SFLDA) {
3575 /* Already loaded */
3577 res = decode_patch (amodule, mp, ji, p, &p);
3586 static MonoJumpInfo*
3587 load_patch_info (MonoAotModule *amodule, MonoMemPool *mp, int n_patches,
3588 gboolean llvm, guint32 **got_slots,
3589 guint8 *buf, guint8 **endbuf)
3591 MonoJumpInfo *patches;
3597 *got_slots = g_malloc (sizeof (guint32) * n_patches);
3598 for (pindex = 0; pindex < n_patches; ++pindex) {
3599 (*got_slots)[pindex] = decode_value (p, &p);
3602 patches = decode_patches (amodule, mp, n_patches, llvm, *got_slots);
3604 g_free (*got_slots);
3614 register_jump_target_got_slot (MonoDomain *domain, MonoMethod *method, gpointer *got_slot)
3617 * Jump addresses cannot be patched by the trampoline code since it
3618 * does not have access to the caller's address. Instead, we collect
3619 * the addresses of the GOT slots pointing to a method, and patch
3620 * them after the method has been compiled.
3622 MonoJitDomainInfo *info = domain_jit_info (domain);
3625 mono_domain_lock (domain);
3626 if (!info->jump_target_got_slot_hash)
3627 info->jump_target_got_slot_hash = g_hash_table_new (NULL, NULL);
3628 list = g_hash_table_lookup (info->jump_target_got_slot_hash, method);
3629 list = g_slist_prepend (list, got_slot);
3630 g_hash_table_insert (info->jump_target_got_slot_hash, method, list);
3631 mono_domain_unlock (domain);
3637 * Load the method identified by METHOD_INDEX from the AOT image. Return a
3638 * pointer to the native code of the method, or NULL if not found.
3639 * METHOD might not be set if the caller only has the image/token info.
3642 load_method (MonoDomain *domain, MonoAotModule *amodule, MonoImage *image, MonoMethod *method, guint32 token, int method_index)
3644 MonoJitInfo *jinfo = NULL;
3645 guint8 *code = NULL, *info;
3648 init_amodule_got (amodule);
3650 if (mono_profiler_get_events () & MONO_PROFILE_ENTER_LEAVE) {
3652 /* The caller cannot handle this */
3653 g_assert_not_reached ();
3657 if (domain != mono_get_root_domain ())
3658 /* Non shared AOT code can't be used in other appdomains */
3661 if (amodule->out_of_date)
3664 if (amodule->info.llvm_get_method) {
3666 * Obtain the method address by calling a generated function in the LLVM module.
3668 gpointer (*get_method) (int) = amodule->info.llvm_get_method;
3669 code = get_method (method_index);
3674 if (amodule->methods [method_index] == GINT_TO_POINTER (-1)) {
3675 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
3679 method = mono_get_method (image, token, NULL);
3680 full_name = mono_method_full_name (method, TRUE);
3681 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT: NOT FOUND: %s.", full_name);
3686 code = amodule->methods [method_index];
3689 info = &amodule->blob [mono_aot_get_offset (amodule->method_info_offsets, method_index)];
3691 if (!amodule->methods_loaded) {
3692 amodule_lock (amodule);
3693 if (!amodule->methods_loaded) {
3696 loaded = g_new0 (guint32, amodule->info.nmethods / 32 + 1);
3697 mono_memory_barrier ();
3698 amodule->methods_loaded = loaded;
3700 amodule_unlock (amodule);
3703 if ((amodule->methods_loaded [method_index / 32] >> (method_index % 32)) & 0x1)
3706 if (mono_last_aot_method != -1) {
3707 if (mono_jit_stats.methods_aot >= mono_last_aot_method)
3709 else if (mono_jit_stats.methods_aot == mono_last_aot_method - 1) {
3711 method = mono_get_method (image, token, NULL);
3713 char *name = mono_method_full_name (method, TRUE);
3714 g_print ("LAST AOT METHOD: %s.\n", name);
3717 g_print ("LAST AOT METHOD: %p %d\n", code, method_index);
3722 if (!(is_llvm_code (amodule, code) && (amodule->info.flags & MONO_AOT_FILE_FLAG_LLVM_ONLY))) {
3723 res = init_llvm_method (amodule, method_index, method, NULL, NULL);
3728 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
3732 method = mono_get_method (image, token, NULL);
3734 full_name = mono_method_full_name (method, TRUE);
3737 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
3739 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT: FOUND method %s [%p - %p %p]", full_name, code, code + jinfo->code_size, info);
3743 amodule_lock (amodule);
3745 InterlockedIncrement (&mono_jit_stats.methods_aot);
3747 amodule->methods_loaded [method_index / 32] |= 1 << (method_index % 32);
3751 if (method && method->wrapper_type)
3752 g_hash_table_insert (amodule->method_to_code, method, code);
3754 amodule_unlock (amodule);
3756 if (mono_profiler_get_events () & MONO_PROFILE_JIT_COMPILATION) {
3760 method = mono_get_method (amodule->assembly->image, token, NULL);
3763 mono_profiler_method_jit (method);
3764 jinfo = mono_jit_info_table_find (domain, (char*)code);
3766 mono_profiler_method_end_jit (method, jinfo, MONO_PROFILE_OK);
3779 find_aot_method_in_amodule (MonoAotModule *amodule, MonoMethod *method, guint32 hash_full)
3781 guint32 table_size, entry_size, hash;
3782 guint32 *table, *entry;
3784 static guint32 n_extra_decodes;
3786 if (!amodule || amodule->out_of_date)
3789 table_size = amodule->extra_method_table [0];
3790 hash = hash_full % table_size;
3791 table = amodule->extra_method_table + 1;
3794 entry = &table [hash * entry_size];
3801 guint32 key = entry [0];
3802 guint32 value = entry [1];
3803 guint32 next = entry [entry_size - 1];
3807 p = amodule->blob + key;
3810 amodule_lock (amodule);
3811 if (!amodule->method_ref_to_method)
3812 amodule->method_ref_to_method = g_hash_table_new (NULL, NULL);
3813 m = g_hash_table_lookup (amodule->method_ref_to_method, p);
3814 amodule_unlock (amodule);
3816 m = decode_resolve_method_ref_with_target (amodule, method, p, &p);
3818 * Can't catche runtime invoke wrappers since it would break
3819 * the check in decode_method_ref_with_target ().
3821 if (m && m->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE) {
3822 amodule_lock (amodule);
3823 g_hash_table_insert (amodule->method_ref_to_method, orig_p, m);
3824 amodule_unlock (amodule);
3832 /* Special case: wrappers of shared generic methods */
3833 if (m && method->wrapper_type && m->wrapper_type == m->wrapper_type &&
3834 method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
3835 MonoMethod *w1 = mono_marshal_method_from_wrapper (method);
3836 MonoMethod *w2 = mono_marshal_method_from_wrapper (m);
3838 if ((w1 == w2) || (w1->is_inflated && ((MonoMethodInflated *)w1)->declaring == w2)) {
3844 /* Methods decoded needlessly */
3846 //printf ("%d %s %s %p\n", n_extra_decodes, mono_method_full_name (method, TRUE), mono_method_full_name (m, TRUE), orig_p);
3851 entry = &table [next * entry_size];
3860 add_module_cb (gpointer key, gpointer value, gpointer user_data)
3862 g_ptr_array_add ((GPtrArray*)user_data, value);
3868 * Try finding METHOD in the extra_method table in all AOT images.
3869 * Return its method index, or 0xffffff if not found. Set OUT_AMODULE to the AOT
3870 * module where the method was found.
3873 find_aot_method (MonoMethod *method, MonoAotModule **out_amodule)
3878 guint32 hash = mono_aot_method_hash (method);
3880 /* Try the method's module first */
3881 *out_amodule = method->klass->image->aot_module;
3882 index = find_aot_method_in_amodule (method->klass->image->aot_module, method, hash);
3883 if (index != 0xffffff)
3887 * Try all other modules.
3888 * This is needed because generic instances klass->image points to the image
3889 * containing the generic definition, but the native code is generated to the
3890 * AOT image which contains the reference.
3893 /* Make a copy to avoid doing the search inside the aot lock */
3894 modules = g_ptr_array_new ();
3896 g_hash_table_foreach (aot_modules, add_module_cb, modules);
3900 for (i = 0; i < modules->len; ++i) {
3901 MonoAotModule *amodule = g_ptr_array_index (modules, i);
3903 if (amodule != method->klass->image->aot_module)
3904 index = find_aot_method_in_amodule (amodule, method, hash);
3905 if (index != 0xffffff) {
3906 *out_amodule = amodule;
3911 g_ptr_array_free (modules, TRUE);
3917 mono_aot_find_method_index (MonoMethod *method)
3919 MonoAotModule *out_amodule;
3920 return find_aot_method (method, &out_amodule);
3924 init_llvm_method (MonoAotModule *amodule, guint32 method_index, MonoMethod *method, MonoClass *init_class, MonoGenericContext *context)
3926 MonoDomain *domain = mono_domain_get ();
3929 gboolean from_plt = method == NULL;
3930 int pindex, n_patches;
3932 MonoJitInfo *jinfo = NULL;
3933 guint8 *code, *info;
3935 code = amodule->methods [method_index];
3936 info = &amodule->blob [mono_aot_get_offset (amodule->method_info_offsets, method_index)];
3941 klass = method->klass;
3942 decode_klass_ref (amodule, p, &p);
3944 klass = decode_klass_ref (amodule, p, &p);
3947 n_patches = decode_value (p, &p);
3950 MonoJumpInfo *patches;
3955 mp = mono_mempool_new ();
3957 if ((gpointer)code >= amodule->info.jit_code_start && (gpointer)code <= amodule->info.jit_code_end) {
3962 got = amodule->llvm_got;
3966 patches = load_patch_info (amodule, mp, n_patches, llvm, &got_slots, p, &p);
3967 if (patches == NULL) {
3968 mono_mempool_destroy (mp);
3972 for (pindex = 0; pindex < n_patches; ++pindex) {
3973 MonoJumpInfo *ji = &patches [pindex];
3977 * For SFLDA, we need to call resolve_patch_target () since the GOT slot could have
3978 * been initialized by load_method () for a static cctor before the cctor has
3979 * finished executing (#23242).
3981 if (!got [got_slots [pindex]] || ji->type == MONO_PATCH_INFO_SFLDA) {
3982 /* In llvm-only made, we might encounter shared methods */
3983 if (mono_llvm_only && ji->type == MONO_PATCH_INFO_METHOD && mono_method_check_context_used (ji->data.method)) {
3987 ji->data.method = mono_class_inflate_generic_method_checked (ji->data.method, context, &error);
3989 /* This cannot be resolved in mono_resolve_patch_target () */
3990 if (ji->type == MONO_PATCH_INFO_AOT_JIT_INFO) {
3991 // FIXME: Lookup using the index
3992 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
3993 ji->type = MONO_PATCH_INFO_ABS;
3994 ji->data.target = jinfo;
3996 addr = mono_resolve_patch_target (method, domain, code, ji, TRUE);
3997 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
3998 addr = mono_create_ftnptr (domain, addr);
3999 mono_memory_barrier ();
4000 got [got_slots [pindex]] = addr;
4001 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
4002 register_jump_target_got_slot (domain, ji->data.method, &(got [got_slots [pindex]]));
4004 ji->type = MONO_PATCH_INFO_NONE;
4009 mono_mempool_destroy (mp);
4012 if (mini_get_debug_options ()->load_aot_jit_info_eagerly)
4013 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
4016 mono_runtime_class_init (mono_class_vtable (domain, init_class));
4017 else if (from_plt && klass && !klass->generic_container)
4018 mono_runtime_class_init (mono_class_vtable (domain, klass));
4030 mono_aot_init_llvm_method (gpointer aot_module, guint32 method_index)
4032 MonoAotModule *amodule = aot_module;
4035 // FIXME: Handle failure
4036 res = init_llvm_method (amodule, method_index, NULL, NULL, NULL);
4041 mono_aot_init_gshared_method_this (gpointer aot_module, guint32 method_index, MonoObject *this)
4043 MonoAotModule *amodule = aot_module;
4046 MonoGenericContext *context;
4051 klass = this->vtable->klass;
4053 amodule_lock (amodule);
4054 method = g_hash_table_lookup (amodule->extra_methods, GUINT_TO_POINTER (method_index));
4055 amodule_unlock (amodule);
4058 context = mono_method_get_context (method);
4061 res = init_llvm_method (amodule, method_index, NULL, klass, context);
4066 mono_aot_init_gshared_method_rgctx (gpointer aot_module, guint32 method_index, MonoMethodRuntimeGenericContext *rgctx)
4068 MonoAotModule *amodule = aot_module;
4070 MonoGenericContext context = { NULL, NULL };
4071 MonoClass *klass = rgctx->class_vtable->klass;
4073 if (klass->generic_class)
4074 context.class_inst = klass->generic_class->context.class_inst;
4075 else if (klass->generic_container)
4076 context.class_inst = klass->generic_container->context.class_inst;
4077 context.method_inst = rgctx->method_inst;
4079 res = init_llvm_method (amodule, method_index, NULL, rgctx->class_vtable->klass, &context);
4084 * mono_aot_get_method:
4086 * Return a pointer to the AOTed native code for METHOD if it can be found,
4088 * On platforms with function pointers, this doesn't return a function pointer.
4091 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
4093 MonoClass *klass = method->klass;
4094 MonoMethod *orig_method = method;
4095 guint32 method_index;
4096 MonoAotModule *amodule = klass->image->aot_module;
4098 gboolean cache_result = FALSE;
4100 if (domain != mono_get_root_domain ())
4101 /* Non shared AOT code can't be used in other appdomains */
4104 if (enable_aot_cache && !amodule && domain->entry_assembly && klass->image == mono_defaults.corlib) {
4105 /* This cannot be AOTed during startup, so do it now */
4106 if (!mscorlib_aot_loaded) {
4107 mscorlib_aot_loaded = TRUE;
4108 load_aot_module (klass->image->assembly, NULL);
4109 amodule = klass->image->aot_module;
4116 if (amodule->out_of_date)
4119 if ((method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
4120 (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
4121 (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
4122 (method->flags & METHOD_ATTRIBUTE_ABSTRACT))
4126 * Use the original method instead of its invoke-with-check wrapper.
4127 * This is not a problem when using full-aot, since it doesn't support
4130 if (mono_aot_only && method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)
4131 return mono_aot_get_method (domain, mono_marshal_method_from_wrapper (method));
4133 g_assert (klass->inited);
4135 /* Find method index */
4136 method_index = 0xffffff;
4137 if (method->is_inflated && !method->wrapper_type && mono_method_is_generic_sharable_full (method, TRUE, FALSE, FALSE)) {
4138 MonoMethod *orig_method = method;
4140 * For generic methods, we store the fully shared instance in place of the
4143 method = mono_method_get_declaring_generic_method (method);
4144 method_index = mono_metadata_token_index (method->token) - 1;
4146 if (mono_llvm_only) {
4147 /* Needed by mono_aot_init_gshared_method_this () */
4148 /* orig_method is a random instance but it is enough to make init_llvm_method () work */
4149 amodule_lock (amodule);
4150 g_hash_table_insert (amodule->extra_methods, GUINT_TO_POINTER (method_index), orig_method);
4151 amodule_unlock (amodule);
4153 } else if (method->is_inflated || !method->token) {
4154 /* This hash table is used to avoid the slower search in the extra_method_table in the AOT image */
4155 amodule_lock (amodule);
4156 code = g_hash_table_lookup (amodule->method_to_code, method);
4157 amodule_unlock (amodule);
4161 cache_result = TRUE;
4162 method_index = find_aot_method (method, &amodule);
4164 * Special case the ICollection<T> wrappers for arrays, as they cannot
4165 * be statically enumerated, and each wrapper ends up calling the same
4168 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED && method->klass->rank && strstr (method->name, "System.Collections.Generic")) {
4169 MonoMethod *m = mono_aot_get_array_helper_from_wrapper (method);
4171 code = mono_aot_get_method (domain, m);
4177 * Special case Array.GetGenericValueImpl which is a generic icall.
4178 * Generic sharing currently can't handle it, but the icall returns data using
4179 * an out parameter, so the managed-to-native wrappers can share the same code.
4181 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass == mono_defaults.array_class && !strcmp (method->name, "GetGenericValueImpl")) {
4184 MonoGenericContext ctx;
4185 MonoType *args [16];
4187 if (mono_method_signature (method)->params [1]->type == MONO_TYPE_OBJECT)
4188 /* Avoid recursion */
4191 m = mono_class_get_method_from_name (mono_defaults.array_class, "GetGenericValueImpl", 2);
4194 memset (&ctx, 0, sizeof (ctx));
4195 args [0] = &mono_defaults.object_class->byval_arg;
4196 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
4198 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method_checked (m, &ctx, &error), TRUE, TRUE);
4199 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
4202 * Get the code for the <object> instantiation which should be emitted into
4203 * the mscorlib aot image by the AOT compiler.
4205 code = mono_aot_get_method (domain, m);
4210 /* Same for CompareExchange<T> and Exchange<T> */
4211 /* Same for Volatile.Read<T>/Write<T> */
4212 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass->image == mono_defaults.corlib &&
4213 ((!strcmp (method->klass->name_space, "System.Threading") && !strcmp (method->klass->name, "Interlocked") && (!strcmp (method->name, "CompareExchange") || !strcmp (method->name, "Exchange")) && MONO_TYPE_IS_REFERENCE (mini_type_get_underlying_type (mono_method_signature (method)->params [1]))) ||
4214 (!strcmp (method->klass->name_space, "System.Threading") && !strcmp (method->klass->name, "Volatile") && (!strcmp (method->name, "Read") && MONO_TYPE_IS_REFERENCE (mini_type_get_underlying_type (mono_method_signature (method)->ret)))) ||
4215 (!strcmp (method->klass->name_space, "System.Threading") && !strcmp (method->klass->name, "Volatile") && (!strcmp (method->name, "Write") && MONO_TYPE_IS_REFERENCE (mini_type_get_underlying_type (mono_method_signature (method)->params [1])))))) {
4218 MonoGenericContext ctx;
4219 MonoType *args [16];
4220 gpointer iter = NULL;
4222 while ((m = mono_class_get_methods (method->klass, &iter))) {
4223 if (mono_method_signature (m)->generic_param_count && !strcmp (m->name, method->name))
4228 memset (&ctx, 0, sizeof (ctx));
4229 args [0] = &mono_defaults.object_class->byval_arg;
4230 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
4232 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method_checked (m, &ctx, &error), TRUE, TRUE);
4233 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
4235 /* Avoid recursion */
4240 * Get the code for the <object> instantiation which should be emitted into
4241 * the mscorlib aot image by the AOT compiler.
4243 code = mono_aot_get_method (domain, m);
4248 /* For ARRAY_ACCESSOR wrappers with reference types, use the <object> instantiation saved in corlib */
4249 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_UNKNOWN) {
4250 WrapperInfo *info = mono_marshal_get_wrapper_info (method);
4252 if (info->subtype == WRAPPER_SUBTYPE_ARRAY_ACCESSOR) {
4253 MonoMethod *array_method = info->d.array_accessor.method;
4254 if (MONO_TYPE_IS_REFERENCE (&array_method->klass->element_class->byval_arg)) {
4255 MonoClass *obj_array_class = mono_array_class_get (mono_defaults.object_class, 1);
4256 MonoMethod *m = mono_class_get_method_from_name (obj_array_class, array_method->name, mono_method_signature (array_method)->param_count);
4259 m = mono_marshal_get_array_accessor_wrapper (m);
4261 code = mono_aot_get_method (domain, m);
4269 if (method_index == 0xffffff && method->is_inflated && mono_method_is_generic_sharable_full (method, FALSE, TRUE, FALSE)) {
4270 /* Partial sharing */
4273 shared = mini_get_shared_method (method);
4274 method_index = find_aot_method (shared, &amodule);
4275 if (method_index != 0xffffff)
4279 if (method_index == 0xffffff && method->is_inflated && mono_method_is_generic_sharable_full (method, FALSE, FALSE, TRUE)) {
4281 /* Use the all-vt shared method since this is what was AOTed */
4282 method_index = find_aot_method (mini_get_shared_method_full (method, TRUE, TRUE), &amodule);
4283 if (method_index != 0xffffff)
4284 method = mini_get_shared_method_full (method, TRUE, FALSE);
4287 if (method_index == 0xffffff) {
4288 if (mono_aot_only && mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
4291 full_name = mono_method_full_name (method, TRUE);
4292 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.", full_name);
4298 if (method_index == 0xffffff)
4301 /* Needed by find_jit_info */
4302 amodule_lock (amodule);
4303 g_hash_table_insert (amodule->extra_methods, GUINT_TO_POINTER (method_index), method);
4304 amodule_unlock (amodule);
4307 method_index = mono_metadata_token_index (method->token) - 1;
4310 code = load_method (domain, amodule, klass->image, method, method->token, method_index);
4311 if (code && cache_result) {
4312 amodule_lock (amodule);
4313 g_hash_table_insert (amodule->method_to_code, orig_method, code);
4314 amodule_unlock (amodule);
4320 * Same as mono_aot_get_method, but we try to avoid loading any metadata from the
4324 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
4326 MonoAotModule *aot_module = image->aot_module;
4332 method_index = mono_metadata_token_index (token) - 1;
4334 return load_method (domain, aot_module, image, NULL, token, method_index);
4340 } IsGotEntryUserData;
4343 check_is_got_entry (gpointer key, gpointer value, gpointer user_data)
4345 IsGotEntryUserData *data = (IsGotEntryUserData*)user_data;
4346 MonoAotModule *aot_module = (MonoAotModule*)value;
4348 if (aot_module->got && (data->addr >= (guint8*)(aot_module->got)) && (data->addr < (guint8*)(aot_module->got + aot_module->info.got_size)))
4353 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
4355 IsGotEntryUserData user_data;
4360 user_data.addr = addr;
4361 user_data.res = FALSE;
4363 g_hash_table_foreach (aot_modules, check_is_got_entry, &user_data);
4366 return user_data.res;
4371 MonoAotModule *module;
4372 } FindAotModuleUserData;
4375 find_aot_module_cb (gpointer key, gpointer value, gpointer user_data)
4377 FindAotModuleUserData *data = (FindAotModuleUserData*)user_data;
4378 MonoAotModule *aot_module = (MonoAotModule*)value;
4380 if (amodule_contains_code_addr (aot_module, data->addr))
4381 data->module = aot_module;
4384 static inline MonoAotModule*
4385 find_aot_module (guint8 *code)
4387 FindAotModuleUserData user_data;
4392 /* Reading these need no locking */
4393 if (((gsize)code < aot_code_low_addr) || ((gsize)code > aot_code_high_addr))
4396 user_data.addr = code;
4397 user_data.module = NULL;
4400 g_hash_table_foreach (aot_modules, find_aot_module_cb, &user_data);
4403 return user_data.module;
4407 mono_aot_patch_plt_entry (guint8 *code, guint8 *plt_entry, gpointer *got, mgreg_t *regs, guint8 *addr)
4409 MonoAotModule *amodule;
4412 * Since AOT code is only used in the root domain,
4413 * mono_domain_get () != mono_get_root_domain () means the calling method
4414 * is AppDomain:InvokeInDomain, so this is the same check as in
4415 * mono_method_same_domain () but without loading the metadata for the method.
4417 if (mono_domain_get () == mono_get_root_domain ()) {
4419 amodule = find_aot_module (code);
4423 mono_arch_patch_plt_entry (plt_entry, got, regs, addr);
4428 * mono_aot_plt_resolve:
4430 * This function is called by the entries in the PLT to resolve the actual method that
4431 * needs to be called. It returns a trampoline to the method and patches the PLT entry.
4432 * Returns NULL if the something cannot be loaded.
4435 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
4437 #ifdef MONO_ARCH_AOT_SUPPORTED
4438 guint8 *p, *target, *plt_entry;
4440 MonoAotModule *module = (MonoAotModule*)aot_module;
4441 gboolean res, no_ftnptr = FALSE;
4443 gboolean using_gsharedvt = FALSE;
4445 //printf ("DYN: %p %d\n", aot_module, plt_info_offset);
4447 p = &module->blob [plt_info_offset];
4449 ji.type = decode_value (p, &p);
4451 mp = mono_mempool_new ();
4452 res = decode_patch (module, mp, &ji, p, &p);
4455 mono_mempool_destroy (mp);
4459 #ifdef MONO_ARCH_GSHAREDVT_SUPPORTED
4460 using_gsharedvt = TRUE;
4464 * Avoid calling resolve_patch_target in the full-aot case if possible, since
4465 * it would create a trampoline, and we don't need that.
4466 * We could do this only if the method does not need the special handling
4467 * in mono_magic_trampoline ().
4469 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) &&
4470 !mono_method_needs_static_rgctx_invoke (ji.data.method, FALSE) && !using_gsharedvt) {
4471 target = mono_jit_compile_method (ji.data.method);
4474 target = mono_resolve_patch_target (NULL, mono_domain_get (), NULL, &ji, TRUE);
4478 * The trampoline expects us to return a function descriptor on platforms which use
4479 * it, but resolve_patch_target returns a direct function pointer for some type of
4480 * patches, so have to translate between the two.
4481 * FIXME: Clean this up, but how ?
4483 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) {
4484 /* These should already have a function descriptor */
4485 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
4486 /* Our function descriptors have a 0 environment, gcc created ones don't */
4487 if (ji.type != MONO_PATCH_INFO_INTERNAL_METHOD && ji.type != MONO_PATCH_INFO_JIT_ICALL_ADDR && ji.type != MONO_PATCH_INFO_ICALL_ADDR)
4488 g_assert (((gpointer*)target) [2] == 0);
4491 } else if (!no_ftnptr) {
4492 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
4493 g_assert (((gpointer*)target) [2] != 0);
4495 target = mono_create_ftnptr (mono_domain_get (), target);
4498 mono_mempool_destroy (mp);
4500 /* Patch the PLT entry with target which might be the actual method not a trampoline */
4501 plt_entry = mono_aot_get_plt_entry (code);
4502 g_assert (plt_entry);
4503 mono_aot_patch_plt_entry (code, plt_entry, module->got, NULL, target);
4507 g_assert_not_reached ();
4515 * Initialize the PLT table of the AOT module. Called lazily when the first AOT
4516 * method in the module is loaded to avoid committing memory by writing to it.
4517 * LOCKING: Assumes the AMODULE lock is held.
4520 init_plt (MonoAotModule *amodule)
4525 if (amodule->plt_inited)
4528 if (amodule->info.plt_size <= 1) {
4529 amodule->plt_inited = TRUE;
4533 tramp = mono_create_specific_trampoline (amodule, MONO_TRAMPOLINE_AOT_PLT, mono_get_root_domain (), NULL);
4536 * Initialize the PLT entries in the GOT to point to the default targets.
4539 tramp = mono_create_ftnptr (mono_domain_get (), tramp);
4540 for (i = 1; i < amodule->info.plt_size; ++i)
4541 /* All the default entries point to the AOT trampoline */
4542 ((gpointer*)amodule->got)[amodule->info.plt_got_offset_base + i] = tramp;
4544 amodule->plt_inited = TRUE;
4548 * mono_aot_get_plt_entry:
4550 * Return the address of the PLT entry called by the code at CODE if exists.
4553 mono_aot_get_plt_entry (guint8 *code)
4555 MonoAotModule *amodule = find_aot_module (code);
4556 guint8 *target = NULL;
4562 if (is_thumb_code (amodule, code))
4563 return mono_arm_get_thumb_plt_entry (code);
4566 #ifdef MONO_ARCH_AOT_SUPPORTED
4567 target = mono_arch_get_call_target (code);
4569 g_assert_not_reached ();
4573 while (target != NULL) {
4574 if ((target >= (guint8*)(amodule->plt)) && (target < (guint8*)(amodule->plt_end)))
4577 // Add 4 since mono_arch_get_call_target assumes we're passing
4578 // the instruction after the actual branch instruction.
4579 target = mono_arch_get_call_target (target + 4);
4584 if ((target >= (guint8*)(amodule->plt)) && (target < (guint8*)(amodule->plt_end)))
4592 * mono_aot_get_plt_info_offset:
4594 * Return the PLT info offset belonging to the plt entry called by CODE.
4597 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
4599 guint8 *plt_entry = mono_aot_get_plt_entry (code);
4601 g_assert (plt_entry);
4603 /* The offset is embedded inside the code after the plt entry */
4604 #ifdef MONO_ARCH_AOT_SUPPORTED
4605 return mono_arch_get_plt_info_offset (plt_entry, regs, code);
4607 g_assert_not_reached ();
4613 mono_create_ftnptr_malloc (guint8 *code)
4615 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
4616 MonoPPCFunctionDescriptor *ftnptr = g_malloc0 (sizeof (MonoPPCFunctionDescriptor));
4618 ftnptr->code = code;
4629 * mono_aot_register_jit_icall:
4631 * Register a JIT icall which is called by trampolines in full-aot mode. This should
4632 * be called from mono_arch_init () during startup.
4635 mono_aot_register_jit_icall (const char *name, gpointer addr)
4637 /* No need for locking */
4638 if (!aot_jit_icall_hash)
4639 aot_jit_icall_hash = g_hash_table_new (g_str_hash, g_str_equal);
4640 g_hash_table_insert (aot_jit_icall_hash, (char*)name, addr);
4644 * load_function_full:
4646 * Load the function named NAME from the aot image.
4649 load_function_full (MonoAotModule *amodule, const char *name, MonoTrampInfo **out_tinfo)
4653 int n_patches, pindex;
4656 guint32 info_offset;
4660 symbol = g_strdup_printf ("%s", name);
4661 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&code);
4664 g_error ("Symbol '%s' not found in AOT file '%s'.\n", name, amodule->aot_name);
4666 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT: FOUND function '%s' in AOT file '%s'.", name, amodule->aot_name);
4670 symbol = g_strdup_printf ("%s_p", name);
4671 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&p);
4674 /* Nothing to patch */
4677 info_offset = *(guint32*)p;
4679 MonoTrampInfo *tinfo;
4680 guint32 code_size, uw_info_len, uw_offset;
4682 /* Construct a MonoTrampInfo from the data in the AOT image */
4684 p += sizeof (guint32);
4685 code_size = *(guint32*)p;
4686 p += sizeof (guint32);
4687 uw_offset = *(guint32*)p;
4688 uw_info = amodule->unwind_info + uw_offset;
4689 uw_info_len = decode_value (uw_info, &uw_info);
4691 tinfo = g_new0 (MonoTrampInfo, 1);
4693 tinfo->code_size = code_size;
4694 tinfo->uw_info = uw_info;
4695 tinfo->uw_info_len = uw_info_len;
4700 p = amodule->blob + info_offset;
4702 /* Similar to mono_aot_load_method () */
4704 n_patches = decode_value (p, &p);
4707 MonoJumpInfo *patches;
4710 mp = mono_mempool_new ();
4712 patches = load_patch_info (amodule, mp, n_patches, FALSE, &got_slots, p, &p);
4715 for (pindex = 0; pindex < n_patches; ++pindex) {
4716 MonoJumpInfo *ji = &patches [pindex];
4719 if (amodule->got [got_slots [pindex]])
4723 * When this code is executed, the runtime may not be initalized yet, so
4724 * resolve the patch info by hand.
4726 if (ji->type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
4727 if (!strcmp (ji->data.name, "mono_get_lmf_addr")) {
4728 target = mono_get_lmf_addr;
4729 } else if (!strcmp (ji->data.name, "mono_thread_force_interruption_checkpoint")) {
4730 target = mono_thread_force_interruption_checkpoint;
4731 } else if (!strcmp (ji->data.name, "mono_exception_from_token")) {
4732 target = mono_exception_from_token;
4733 } else if (!strcmp (ji->data.name, "mono_throw_exception")) {
4734 target = mono_get_throw_exception ();
4735 } else if (strstr (ji->data.name, "trampoline_func_") == ji->data.name) {
4736 int tramp_type2 = atoi (ji->data.name + strlen ("trampoline_func_"));
4737 target = (gpointer)mono_get_trampoline_func (tramp_type2);
4738 } else if (strstr (ji->data.name, "specific_trampoline_lazy_fetch_") == ji->data.name) {
4739 /* atoll is needed because the the offset is unsigned */
4743 res = sscanf (ji->data.name, "specific_trampoline_lazy_fetch_%u", &slot);
4744 g_assert (res == 1);
4745 target = mono_create_specific_trampoline (GUINT_TO_POINTER (slot), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, mono_get_root_domain (), NULL);
4746 target = mono_create_ftnptr_malloc (target);
4747 } else if (!strcmp (ji->data.name, "mono_thread_get_and_clear_pending_exception")) {
4748 target = mono_thread_get_and_clear_pending_exception;
4749 } else if (!strcmp (ji->data.name, "debugger_agent_single_step_from_context")) {
4750 target = debugger_agent_single_step_from_context;
4751 } else if (!strcmp (ji->data.name, "debugger_agent_breakpoint_from_context")) {
4752 target = debugger_agent_breakpoint_from_context;
4753 } else if (strstr (ji->data.name, "generic_trampoline_")) {
4754 target = mono_aot_get_trampoline (ji->data.name);
4755 } else if (aot_jit_icall_hash && g_hash_table_lookup (aot_jit_icall_hash, ji->data.name)) {
4756 /* Registered by mono_arch_init () */
4757 target = g_hash_table_lookup (aot_jit_icall_hash, ji->data.name);
4759 fprintf (stderr, "Unknown relocation '%s'\n", ji->data.name);
4760 g_assert_not_reached ();
4764 /* Hopefully the code doesn't have patches which need method or
4767 target = mono_resolve_patch_target (NULL, NULL, code, ji, FALSE);
4771 amodule->got [got_slots [pindex]] = target;
4776 mono_mempool_destroy (mp);
4783 load_function (MonoAotModule *amodule, const char *name)
4785 return load_function_full (amodule, name, NULL);
4788 static MonoAotModule*
4789 get_mscorlib_aot_module (void)
4792 MonoAotModule *amodule;
4794 image = mono_defaults.corlib;
4796 amodule = image->aot_module;
4798 amodule = mscorlib_aot_module;
4804 no_trampolines (void)
4806 g_assert_not_reached ();
4810 * Return the trampoline identified by NAME from the mscorlib AOT file.
4811 * On ppc64, this returns a function descriptor.
4814 mono_aot_get_trampoline_full (const char *name, MonoTrampInfo **out_tinfo)
4816 MonoAotModule *amodule = get_mscorlib_aot_module ();
4818 if (mono_llvm_only) {
4820 return no_trampolines;
4823 return mono_create_ftnptr_malloc (load_function_full (amodule, name, out_tinfo));
4827 mono_aot_get_trampoline (const char *name)
4829 MonoTrampInfo *out_tinfo;
4832 code = mono_aot_get_trampoline_full (name, &out_tinfo);
4833 mono_tramp_info_register (out_tinfo, NULL);
4839 read_unwind_info (MonoAotModule *amodule, MonoTrampInfo *info, const char *symbol_name)
4841 gpointer symbol_addr;
4842 guint32 uw_offset, uw_info_len;
4845 find_symbol (amodule->sofile, amodule->globals, symbol_name, &symbol_addr);
4850 uw_offset = *(guint32*)symbol_addr;
4851 uw_info = amodule->unwind_info + uw_offset;
4852 uw_info_len = decode_value (uw_info, &uw_info);
4854 info->uw_info = uw_info;
4855 info->uw_info_len = uw_info_len;
4857 /* If successful return the address of the following data */
4858 return (guint32*)symbol_addr + 1;
4862 #include <mach/mach.h>
4864 static TrampolinePage* trampoline_pages [MONO_AOT_TRAMP_NUM];
4867 read_page_trampoline_uwinfo (MonoTrampInfo *info, int tramp_type, gboolean is_generic)
4869 char symbol_name [128];
4871 if (tramp_type == MONO_AOT_TRAMP_SPECIFIC)
4872 sprintf (symbol_name, "specific_trampolines_page_%s_p", is_generic ? "gen" : "sp");
4873 else if (tramp_type == MONO_AOT_TRAMP_STATIC_RGCTX)
4874 sprintf (symbol_name, "rgctx_trampolines_page_%s_p", is_generic ? "gen" : "sp");
4875 else if (tramp_type == MONO_AOT_TRAMP_IMT_THUNK)
4876 sprintf (symbol_name, "imt_trampolines_page_%s_p", is_generic ? "gen" : "sp");
4877 else if (tramp_type == MONO_AOT_TRAMP_GSHAREDVT_ARG)
4878 sprintf (symbol_name, "gsharedvt_trampolines_page_%s_p", is_generic ? "gen" : "sp");
4880 g_assert_not_reached ();
4882 read_unwind_info (mono_defaults.corlib->aot_module, info, symbol_name);
4885 static unsigned char*
4886 get_new_trampoline_from_page (int tramp_type)
4888 MonoAotModule *amodule;
4890 TrampolinePage *page;
4893 vm_address_t addr, taddr;
4895 vm_prot_t prot, max_prot;
4896 int psize, specific_trampoline_size;
4897 unsigned char *code;
4899 specific_trampoline_size = 2 * sizeof (gpointer);
4901 mono_aot_page_lock ();
4902 page = trampoline_pages [tramp_type];
4903 if (page && page->trampolines < page->trampolines_end) {
4904 code = page->trampolines;
4905 page->trampolines += specific_trampoline_size;
4906 mono_aot_page_unlock ();
4909 mono_aot_page_unlock ();
4910 /* the trampoline template page is in the mscorlib module */
4911 image = mono_defaults.corlib;
4914 psize = MONO_AOT_TRAMP_PAGE_SIZE;
4916 amodule = image->aot_module;
4919 if (tramp_type == MONO_AOT_TRAMP_SPECIFIC)
4920 tpage = load_function (amodule, "specific_trampolines_page");
4921 else if (tramp_type == MONO_AOT_TRAMP_STATIC_RGCTX)
4922 tpage = load_function (amodule, "rgctx_trampolines_page");
4923 else if (tramp_type == MONO_AOT_TRAMP_IMT_THUNK)
4924 tpage = load_function (amodule, "imt_trampolines_page");
4925 else if (tramp_type == MONO_AOT_TRAMP_GSHAREDVT_ARG)
4926 tpage = load_function (amodule, "gsharedvt_arg_trampolines_page");
4928 g_error ("Incorrect tramp type for trampolines page");
4930 /*g_warning ("loaded trampolines page at %x", tpage);*/
4932 /* avoid the unlikely case of looping forever */
4935 while (page == NULL && count-- > 0) {
4936 MonoTrampInfo *gen_info, *sp_info;
4939 /* allocate two contiguous pages of memory: the first page will contain the data (like a local constant pool)
4940 * while the second will contain the trampolines.
4942 ret = vm_allocate (mach_task_self (), &addr, psize * 2, VM_FLAGS_ANYWHERE);
4943 if (ret != KERN_SUCCESS) {
4944 g_error ("Cannot allocate memory for trampolines: %d", ret);
4947 /*g_warning ("allocated trampoline double page at %x", addr);*/
4948 /* replace the second page with a remapped trampoline page */
4949 taddr = addr + psize;
4950 vm_deallocate (mach_task_self (), taddr, psize);
4951 ret = vm_remap (mach_task_self (), &taddr, psize, 0, FALSE, mach_task_self(), (vm_address_t)tpage, FALSE, &prot, &max_prot, VM_INHERIT_SHARE);
4952 if (ret != KERN_SUCCESS) {
4953 /* someone else got the page, try again */
4954 vm_deallocate (mach_task_self (), addr, psize);
4957 /*g_warning ("remapped trampoline page at %x", taddr);*/
4959 mono_aot_page_lock ();
4960 page = trampoline_pages [tramp_type];
4961 /* some other thread already allocated, so use that to avoid wasting memory */
4962 if (page && page->trampolines < page->trampolines_end) {
4963 code = page->trampolines;
4964 page->trampolines += specific_trampoline_size;
4965 mono_aot_page_unlock ();
4966 vm_deallocate (mach_task_self (), addr, psize);
4967 vm_deallocate (mach_task_self (), taddr, psize);
4970 page = (TrampolinePage*)addr;
4971 page->next = trampoline_pages [tramp_type];
4972 trampoline_pages [tramp_type] = page;
4973 page->trampolines = (void*)(taddr + amodule->info.tramp_page_code_offsets [tramp_type]);
4974 page->trampolines_end = (void*)(taddr + psize - 64);
4975 code = page->trampolines;
4976 page->trampolines += specific_trampoline_size;
4977 mono_aot_page_unlock ();
4979 /* Register the generic part at the beggining of the trampoline page */
4980 gen_info = mono_tramp_info_create (NULL, (guint8*)taddr, amodule->info.tramp_page_code_offsets [tramp_type], NULL, NULL);
4981 read_page_trampoline_uwinfo (gen_info, tramp_type, TRUE);
4982 mono_tramp_info_register (gen_info, NULL);
4985 * Registering each specific trampoline produces a lot of
4986 * MonoJitInfo structures. Jump trampolines are also registered
4989 if (tramp_type != MONO_AOT_TRAMP_SPECIFIC) {
4990 /* Register the rest of the page as a single trampoline */
4991 sp_info = mono_tramp_info_create (NULL, code, page->trampolines_end - code, NULL, NULL);
4992 read_page_trampoline_uwinfo (sp_info, tramp_type, FALSE);
4993 mono_tramp_info_register (sp_info, NULL);
4997 g_error ("Cannot allocate more trampoline pages: %d", ret);
5002 static unsigned char*
5003 get_new_trampoline_from_page (int tramp_type)
5005 g_error ("Page trampolines not supported.");
5012 get_new_specific_trampoline_from_page (gpointer tramp, gpointer arg)
5017 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_SPECIFIC);
5019 data = (gpointer*)((char*)code - MONO_AOT_TRAMP_PAGE_SIZE);
5022 /*g_warning ("new trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
5028 get_new_rgctx_trampoline_from_page (gpointer tramp, gpointer arg)
5033 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_STATIC_RGCTX);
5035 data = (gpointer*)((char*)code - MONO_AOT_TRAMP_PAGE_SIZE);
5038 /*g_warning ("new rgctx trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
5044 get_new_imt_trampoline_from_page (gpointer arg)
5049 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_IMT_THUNK);
5051 data = (gpointer*)((char*)code - MONO_AOT_TRAMP_PAGE_SIZE);
5053 /*g_warning ("new imt trampoline at %p for data %p, (stored at %p)", code, arg, data);*/
5059 get_new_gsharedvt_arg_trampoline_from_page (gpointer tramp, gpointer arg)
5064 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_GSHAREDVT_ARG);
5066 data = (gpointer*)((char*)code - MONO_AOT_TRAMP_PAGE_SIZE);
5069 /*g_warning ("new rgctx trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
5073 /* Return a given kind of trampoline */
5074 /* FIXME set unwind info for these trampolines */
5076 get_numerous_trampoline (MonoAotTrampoline tramp_type, int n_got_slots, MonoAotModule **out_amodule, guint32 *got_offset, guint32 *out_tramp_size)
5079 MonoAotModule *amodule = get_mscorlib_aot_module ();
5080 int index, tramp_size;
5082 /* Currently, we keep all trampolines in the mscorlib AOT image */
5083 image = mono_defaults.corlib;
5085 *out_amodule = amodule;
5090 #define MONOTOUCH_TRAMPOLINES_ERROR ". See http://docs.xamarin.com/ios/troubleshooting for instructions on how to fix this condition."
5092 #define MONOTOUCH_TRAMPOLINES_ERROR ""
5094 if (amodule->trampoline_index [tramp_type] == amodule->info.num_trampolines [tramp_type]) {
5095 g_error ("Ran out of trampolines of type %d in '%s' (%d)%s\n",
5096 tramp_type, image ? image->name : "mscorlib", amodule->info.num_trampolines [tramp_type], MONOTOUCH_TRAMPOLINES_ERROR);
5098 index = amodule->trampoline_index [tramp_type] ++;
5102 *got_offset = amodule->info.trampoline_got_offset_base [tramp_type] + (index * n_got_slots);
5104 tramp_size = amodule->info.trampoline_size [tramp_type];
5107 *out_tramp_size = tramp_size;
5109 return amodule->trampolines [tramp_type] + (index * tramp_size);
5113 no_specific_trampoline (void)
5115 g_assert_not_reached ();
5119 * Return a specific trampoline from the AOT file.
5122 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
5124 MonoAotModule *amodule;
5125 guint32 got_offset, tramp_size;
5126 guint8 *code, *tramp;
5127 static gpointer generic_trampolines [MONO_TRAMPOLINE_NUM];
5128 static gboolean inited;
5129 static guint32 num_trampolines;
5131 if (mono_llvm_only) {
5133 return no_specific_trampoline;
5140 mono_counters_register ("Specific trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &num_trampolines);
5149 if (!generic_trampolines [tramp_type]) {
5152 symbol = mono_get_generic_trampoline_name (tramp_type);
5153 generic_trampolines [tramp_type] = mono_aot_get_trampoline (symbol);
5157 tramp = generic_trampolines [tramp_type];
5160 if (USE_PAGE_TRAMPOLINES) {
5161 code = get_new_specific_trampoline_from_page (tramp, arg1);
5164 code = get_numerous_trampoline (MONO_AOT_TRAMP_SPECIFIC, 2, &amodule, &got_offset, &tramp_size);
5166 amodule->got [got_offset] = tramp;
5167 amodule->got [got_offset + 1] = arg1;
5171 *code_len = tramp_size;
5177 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
5179 MonoAotModule *amodule;
5183 if (USE_PAGE_TRAMPOLINES) {
5184 code = get_new_rgctx_trampoline_from_page (addr, ctx);
5186 code = get_numerous_trampoline (MONO_AOT_TRAMP_STATIC_RGCTX, 2, &amodule, &got_offset, NULL);
5188 amodule->got [got_offset] = ctx;
5189 amodule->got [got_offset + 1] = addr;
5192 /* The caller expects an ftnptr */
5193 return mono_create_ftnptr (mono_domain_get (), code);
5197 mono_aot_get_unbox_trampoline (MonoMethod *method)
5199 guint32 method_index = mono_metadata_token_index (method->token) - 1;
5200 MonoAotModule *amodule;
5202 guint32 *ut, *ut_end, *entry;
5203 int low, high, entry_index = 0;
5204 gpointer symbol_addr;
5205 MonoTrampInfo *tinfo;
5207 if (method->is_inflated && !mono_method_is_generic_sharable_full (method, FALSE, FALSE, FALSE)) {
5208 method_index = find_aot_method (method, &amodule);
5209 if (method_index == 0xffffff && mono_method_is_generic_sharable_full (method, FALSE, TRUE, FALSE)) {
5210 MonoMethod *shared = mini_get_shared_method_full (method, FALSE, FALSE);
5211 method_index = find_aot_method (shared, &amodule);
5213 if (method_index == 0xffffff && mono_method_is_generic_sharable_full (method, FALSE, TRUE, TRUE)) {
5214 MonoMethod *shared = mini_get_shared_method_full (method, TRUE, TRUE);
5215 method_index = find_aot_method (shared, &amodule);
5217 g_assert (method_index != 0xffffff);
5219 amodule = method->klass->image->aot_module;
5223 if (amodule->info.llvm_get_unbox_tramp) {
5224 gpointer (*get_tramp) (int) = amodule->info.llvm_get_unbox_tramp;
5225 code = get_tramp (method_index);
5231 ut = amodule->unbox_trampolines;
5232 ut_end = amodule->unbox_trampolines_end;
5234 /* Do a binary search in the sorted table */
5237 high = (ut_end - ut);
5238 while (low < high) {
5239 entry_index = (low + high) / 2;
5240 entry = &ut [entry_index];
5241 if (entry [0] < method_index) {
5242 low = entry_index + 1;
5243 } else if (entry [0] > method_index) {
5250 code = get_call_table_entry (amodule->unbox_trampoline_addresses, entry_index);
5253 tinfo = mono_tramp_info_create (NULL, code, 0, NULL, NULL);
5255 symbol_addr = read_unwind_info (amodule, tinfo, "unbox_trampoline_p");
5257 mono_tramp_info_free (tinfo);
5261 tinfo->code_size = *(guint32*)symbol_addr;
5262 mono_tramp_info_register (tinfo, NULL);
5264 /* The caller expects an ftnptr */
5265 return mono_create_ftnptr (mono_domain_get (), code);
5269 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
5273 MonoAotModule *amodule = mono_defaults.corlib->aot_module;
5274 guint32 index = MONO_RGCTX_SLOT_INDEX (slot);
5275 static int count = 0;
5278 if (index >= amodule->info.num_rgctx_fetch_trampolines) {
5279 static gpointer addr;
5283 * Use the general version of the rgctx fetch trampoline. It receives a pair of <slot, trampoline> in the rgctx arg reg.
5286 addr = load_function (amodule, "rgctx_fetch_trampoline_general");
5287 info = mono_domain_alloc0 (mono_get_root_domain (), sizeof (gpointer) * 2);
5288 info [0] = GUINT_TO_POINTER (slot);
5289 info [1] = mono_create_specific_trampoline (GUINT_TO_POINTER (slot), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, mono_get_root_domain (), NULL);
5290 code = mono_aot_get_static_rgctx_trampoline (info, addr);
5291 return mono_create_ftnptr (mono_domain_get (), code);
5294 symbol = mono_get_rgctx_fetch_trampoline_name (slot);
5295 code = load_function (mono_defaults.corlib->aot_module, symbol);
5297 /* The caller expects an ftnptr */
5298 return mono_create_ftnptr (mono_domain_get (), code);
5304 g_assert_not_reached ();
5308 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
5313 int i, index, real_count;
5314 MonoAotModule *amodule;
5317 return no_imt_thunk;
5320 for (i = 0; i < count; ++i) {
5321 MonoIMTCheckItem *item = imt_entries [i];
5323 if (item->is_equals)
5327 /* Save the entries into an array */
5328 buf = mono_domain_alloc (domain, (real_count + 1) * 2 * sizeof (gpointer));
5330 for (i = 0; i < count; ++i) {
5331 MonoIMTCheckItem *item = imt_entries [i];
5333 if (!item->is_equals)
5336 g_assert (item->key);
5338 buf [(index * 2)] = item->key;
5339 if (item->has_target_code) {
5340 gpointer *p = mono_domain_alloc (domain, sizeof (gpointer));
5341 *p = item->value.target_code;
5342 buf [(index * 2) + 1] = p;
5344 buf [(index * 2) + 1] = &(vtable->vtable [item->value.vtable_slot]);
5348 buf [(index * 2)] = NULL;
5349 buf [(index * 2) + 1] = fail_tramp;
5351 if (USE_PAGE_TRAMPOLINES) {
5352 code = get_new_imt_trampoline_from_page (buf);
5354 code = get_numerous_trampoline (MONO_AOT_TRAMP_IMT_THUNK, 1, &amodule, &got_offset, NULL);
5356 amodule->got [got_offset] = buf;
5363 mono_aot_get_gsharedvt_arg_trampoline (gpointer arg, gpointer addr)
5365 MonoAotModule *amodule;
5369 if (USE_PAGE_TRAMPOLINES) {
5370 code = get_new_gsharedvt_arg_trampoline_from_page (addr, arg);
5372 code = get_numerous_trampoline (MONO_AOT_TRAMP_GSHAREDVT_ARG, 2, &amodule, &got_offset, NULL);
5374 amodule->got [got_offset] = arg;
5375 amodule->got [got_offset + 1] = addr;
5378 /* The caller expects an ftnptr */
5379 return mono_create_ftnptr (mono_domain_get (), code);
5383 * mono_aot_set_make_unreadable:
5385 * Set whenever to make all mmaped memory unreadable. In conjuction with a
5386 * SIGSEGV handler, this is useful to find out which pages the runtime tries to read.
5389 mono_aot_set_make_unreadable (gboolean unreadable)
5393 make_unreadable = unreadable;
5395 if (make_unreadable && !inited) {
5396 mono_counters_register ("AOT: pagefaults", MONO_COUNTER_JIT | MONO_COUNTER_INT, &n_pagefaults);
5401 MonoAotModule *module;
5406 find_map (gpointer key, gpointer value, gpointer user_data)
5408 MonoAotModule *module = (MonoAotModule*)value;
5409 FindMapUserData *data = (FindMapUserData*)user_data;
5412 if ((data->ptr >= module->mem_begin) && (data->ptr < module->mem_end))
5413 data->module = module;
5416 static MonoAotModule*
5417 find_module_for_addr (void *ptr)
5419 FindMapUserData data;
5421 if (!make_unreadable)
5425 data.ptr = (guint8*)ptr;
5428 g_hash_table_foreach (aot_modules, (GHFunc)find_map, &data);
5435 * mono_aot_is_pagefault:
5437 * Should be called from a SIGSEGV signal handler to find out whenever @ptr is
5438 * within memory allocated by this module.
5441 mono_aot_is_pagefault (void *ptr)
5443 if (!make_unreadable)
5447 * Not signal safe, but SIGSEGV's are synchronous, and
5448 * this is only turned on by a MONO_DEBUG option.
5450 return find_module_for_addr (ptr) != NULL;
5454 * mono_aot_handle_pagefault:
5456 * Handle a pagefault caused by an unreadable page by making it readable again.
5459 mono_aot_handle_pagefault (void *ptr)
5461 #ifndef PLATFORM_WIN32
5462 guint8* start = (guint8*)ROUND_DOWN (((gssize)ptr), mono_pagesize ());
5466 res = mono_mprotect (start, mono_pagesize (), MONO_MMAP_READ|MONO_MMAP_WRITE|MONO_MMAP_EXEC);
5467 g_assert (res == 0);
5478 mono_aot_init (void)
5483 mono_aot_cleanup (void)
5488 mono_aot_find_method_index (MonoMethod *method)
5490 g_assert_not_reached ();
5495 mono_aot_init_llvm_method (gpointer aot_module, guint32 method_index)
5500 mono_aot_init_gshared_method_this (gpointer aot_module, guint32 method_index, MonoObject *this)
5505 mono_aot_init_gshared_method_rgctx (gpointer aot_module, guint32 method_index, MonoMethodRuntimeGenericContext *rgctx)
5510 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
5516 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
5522 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
5528 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
5534 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
5540 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
5546 mono_aot_get_plt_entry (guint8 *code)
5552 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
5558 mono_aot_patch_plt_entry (guint8 *code, guint8 *plt_entry, gpointer *got, mgreg_t *regs, guint8 *addr)
5563 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
5569 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
5571 g_assert_not_reached ();
5577 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
5579 g_assert_not_reached ();
5584 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
5586 g_assert_not_reached ();
5591 mono_aot_get_trampoline_full (const char *name, MonoTrampInfo **out_tinfo)
5593 g_assert_not_reached ();
5598 mono_aot_get_trampoline (const char *name)
5600 g_assert_not_reached ();
5605 mono_aot_get_unbox_trampoline (MonoMethod *method)
5607 g_assert_not_reached ();
5612 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
5614 g_assert_not_reached ();
5619 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
5621 g_assert_not_reached ();
5626 mono_aot_get_gsharedvt_arg_trampoline (gpointer arg, gpointer addr)
5628 g_assert_not_reached ();
5633 mono_aot_set_make_unreadable (gboolean unreadable)
5638 mono_aot_is_pagefault (void *ptr)
5644 mono_aot_handle_pagefault (void *ptr)
5649 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
5651 g_assert_not_reached ();
5656 mono_aot_register_jit_icall (const char *name, gpointer addr)