2 * aot-runtime.c: mono Ahead of Time compiler
5 * Dietmar Maurer (dietmar@ximian.com)
6 * Zoltan Varga (vargaz@gmail.com)
8 * (C) 2002 Ximian, Inc.
9 * Copyright 2003-2011 Novell, Inc.
10 * Copyright 2011 Xamarin, Inc.
14 #include <sys/types.h>
20 #ifdef HAVE_SYS_MMAN_H
29 #ifdef HAVE_EXECINFO_H
36 #ifdef HAVE_SYS_WAIT_H
37 #include <sys/wait.h> /* for WIFEXITED, WEXITSTATUS */
40 #include <mono/metadata/abi-details.h>
41 #include <mono/metadata/tabledefs.h>
42 #include <mono/metadata/class.h>
43 #include <mono/metadata/object.h>
44 #include <mono/metadata/tokentype.h>
45 #include <mono/metadata/appdomain.h>
46 #include <mono/metadata/debug-helpers.h>
47 #include <mono/metadata/assembly.h>
48 #include <mono/metadata/metadata-internals.h>
49 #include <mono/metadata/marshal.h>
50 #include <mono/metadata/gc-internal.h>
51 #include <mono/metadata/monitor.h>
52 #include <mono/metadata/threads-types.h>
53 #include <mono/metadata/mono-endian.h>
54 #include <mono/utils/mono-logger-internal.h>
55 #include <mono/utils/mono-mmap.h>
56 #include "mono/utils/mono-compiler.h"
57 #include <mono/utils/mono-counters.h>
58 #include <mono/utils/mono-digest.h>
61 #include "seq-points.h"
63 #include "debugger-agent.h"
68 #define ENABLE_AOT_CACHE
71 #define ALIGN_TO(val,align) ((((guint64)val) + ((align) - 1)) & ~((align) - 1))
72 #define ALIGN_PTR_TO(ptr,align) (gpointer)((((gssize)(ptr)) + (align - 1)) & (~(align - 1)))
73 #define ROUND_DOWN(VALUE,SIZE) ((VALUE) & ~((SIZE) - 1))
80 typedef struct MonoAotModule {
82 /* Pointer to the Global Offset Table */
85 GHashTable *name_cache;
86 GHashTable *extra_methods;
87 /* Maps methods to their code */
88 GHashTable *method_to_code;
89 /* Maps pointers into the method info to the methods themselves */
90 GHashTable *method_ref_to_method;
91 MonoAssemblyName *image_names;
93 MonoAssembly *assembly;
94 MonoImage **image_table;
95 guint32 image_table_len;
100 /* Points to either the start of JIT compiler or LLVM compiled code */
102 guint8 *jit_code_start;
103 guint8 *jit_code_end;
104 guint8 *llvm_code_start;
105 guint8 *llvm_code_end;
109 gint32 *code_offsets;
110 gpointer *method_addresses;
111 /* This contains <offset, index> pairs sorted by offset */
112 /* This is needed because LLVM emitted methods can be in any order */
113 gint32 *sorted_code_offsets;
114 gint32 sorted_code_offsets_len;
115 guint32 *method_info_offsets;
116 guint32 *ex_info_offsets;
117 guint32 *class_info_offsets;
118 guint32 *methods_loaded;
119 guint16 *class_name_table;
120 guint32 *extra_method_table;
121 guint32 *extra_method_info_offsets;
122 guint32 *unbox_trampolines;
123 guint32 *unbox_trampolines_end;
124 guint32 *unbox_trampoline_addresses;
128 /* Points to the mono EH data created by LLVM */
129 guint8 *mono_eh_frame;
131 /* Points to the trampolines */
132 guint8 *trampolines [MONO_AOT_TRAMP_NUM];
133 /* The first unused trampoline of each kind */
134 guint32 trampoline_index [MONO_AOT_TRAMP_NUM];
136 gboolean use_page_trampolines;
138 MonoAotFileInfo info;
143 JitInfoMap *async_jit_info_table;
149 unsigned char *trampolines;
150 unsigned char *trampolines_end;
153 static GHashTable *aot_modules;
154 #define mono_aot_lock() mono_mutex_lock (&aot_mutex)
155 #define mono_aot_unlock() mono_mutex_unlock (&aot_mutex)
156 static mono_mutex_t aot_mutex;
159 * Maps assembly names to the mono_aot_module_<NAME>_info symbols in the
160 * AOT modules registered by mono_aot_register_module ().
162 static GHashTable *static_aot_modules;
165 * Maps MonoJitInfo* to the aot module they belong to, this can be different
166 * from ji->method->klass->image's aot module for generic instances.
168 static GHashTable *ji_to_amodule;
171 * Whenever to AOT compile loaded assemblies on demand and store them in
174 static gboolean enable_aot_cache = FALSE;
176 static gboolean mscorlib_aot_loaded;
179 static gint32 mono_last_aot_method = -1;
181 static gboolean make_unreadable = FALSE;
182 static guint32 name_table_accesses = 0;
183 static guint32 n_pagefaults = 0;
185 /* Used to speed-up find_aot_module () */
186 static gsize aot_code_low_addr = (gssize)-1;
187 static gsize aot_code_high_addr = 0;
190 static gint32 async_jit_info_size;
192 static GHashTable *aot_jit_icall_hash;
195 #define USE_PAGE_TRAMPOLINES ((MonoAotModule*)mono_defaults.corlib->aot_module)->use_page_trampolines
197 #define USE_PAGE_TRAMPOLINES 0
200 #define mono_aot_page_lock() mono_mutex_lock (&aot_page_mutex)
201 #define mono_aot_page_unlock() mono_mutex_unlock (&aot_page_mutex)
202 static mono_mutex_t aot_page_mutex;
205 init_plt (MonoAotModule *info);
208 compute_llvm_code_range (MonoAotModule *amodule, guint8 **code_start, guint8 **code_end);
210 /*****************************************************/
212 /*****************************************************/
215 amodule_lock (MonoAotModule *amodule)
217 mono_mutex_lock (&amodule->mutex);
221 amodule_unlock (MonoAotModule *amodule)
223 mono_mutex_unlock (&amodule->mutex);
229 * Load one of the images referenced by AMODULE. Returns NULL if the image is not
230 * found, and sets the loader error if SET_ERROR is TRUE.
233 load_image (MonoAotModule *amodule, int index, gboolean set_error)
235 MonoAssembly *assembly;
236 MonoImageOpenStatus status;
238 g_assert (index < amodule->image_table_len);
240 if (amodule->image_table [index])
241 return amodule->image_table [index];
242 if (amodule->out_of_date)
245 assembly = mono_assembly_load (&amodule->image_names [index], amodule->assembly->basedir, &status);
247 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);
248 amodule->out_of_date = TRUE;
251 char *full_name = mono_stringify_assembly_name (&amodule->image_names [index]);
252 mono_loader_set_error_assembly_load (full_name, FALSE);
258 if (strcmp (assembly->image->guid, amodule->image_guids [index])) {
259 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);
260 amodule->out_of_date = TRUE;
264 amodule->image_table [index] = assembly->image;
265 return assembly->image;
269 decode_value (guint8 *ptr, guint8 **rptr)
274 if ((b & 0x80) == 0){
277 } else if ((b & 0x40) == 0){
278 len = ((b & 0x3f) << 8 | ptr [1]);
280 } else if (b != 0xff) {
281 len = ((b & 0x1f) << 24) |
288 len = (ptr [1] << 24) | (ptr [2] << 16) | (ptr [3] << 8) | ptr [4];
294 //printf ("DECODE: %d.\n", len);
299 * mono_aot_get_offset:
301 * Decode an offset table emitted by emit_offset_table (), returning the INDEXth
305 mono_aot_get_offset (guint32 *table, int index)
307 int i, group, ngroups, index_entry_size;
308 int start_offset, offset, group_size;
309 guint8 *data_start, *p;
310 guint32 *index32 = NULL;
311 guint16 *index16 = NULL;
313 /* noffsets = table [0]; */
314 group_size = table [1];
316 index_entry_size = table [3];
317 group = index / group_size;
319 if (index_entry_size == 2) {
320 index16 = (guint16*)&table [4];
321 data_start = (guint8*)&index16 [ngroups];
322 p = data_start + index16 [group];
324 index32 = (guint32*)&table [4];
325 data_start = (guint8*)&index32 [ngroups];
326 p = data_start + index32 [group];
329 /* offset will contain the value of offsets [group * group_size] */
330 offset = start_offset = decode_value (p, &p);
331 for (i = group * group_size + 1; i <= index; ++i) {
332 offset += decode_value (p, &p);
335 //printf ("Offset lookup: %d -> %d, start=%d, p=%d\n", index, offset, start_offset, table [3 + group]);
341 decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf);
344 decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf);
347 decode_type (MonoAotModule *module, guint8 *buf, guint8 **endbuf);
349 static MonoGenericInst*
350 decode_generic_inst (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
353 MonoType **type_argv;
354 MonoGenericInst *inst;
357 type_argc = decode_value (p, &p);
358 type_argv = g_new0 (MonoType*, type_argc);
360 for (i = 0; i < type_argc; ++i) {
361 MonoClass *pclass = decode_klass_ref (module, p, &p);
366 type_argv [i] = &pclass->byval_arg;
369 inst = mono_metadata_get_generic_inst (type_argc, type_argv);
378 decode_generic_context (MonoAotModule *module, MonoGenericContext *ctx, guint8 *buf, guint8 **endbuf)
385 argc = decode_value (p, &p);
388 ctx->class_inst = decode_generic_inst (module, p, &p);
389 if (!ctx->class_inst)
393 argc = decode_value (p, &p);
396 ctx->method_inst = decode_generic_inst (module, p, &p);
397 if (!ctx->method_inst)
406 decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
410 MonoClass *klass = NULL, *eklass;
411 guint32 token, rank, idx;
415 reftype = decode_value (p, &p);
422 case MONO_AOT_TYPEREF_TYPEDEF_INDEX:
423 idx = decode_value (p, &p);
424 image = load_image (module, 0, TRUE);
427 klass = mono_class_get_checked (image, MONO_TOKEN_TYPE_DEF + idx, &error);
428 g_assert (mono_error_ok (&error));
430 case MONO_AOT_TYPEREF_TYPEDEF_INDEX_IMAGE:
431 idx = decode_value (p, &p);
432 image = load_image (module, decode_value (p, &p), 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_TYPESPEC_TOKEN:
439 token = decode_value (p, &p);
440 image = module->assembly->image;
443 klass = mono_class_get_checked (image, token, &error);
444 g_assert (mono_error_ok (&error));
446 case MONO_AOT_TYPEREF_GINST: {
448 MonoGenericContext ctx;
451 gclass = decode_klass_ref (module, p, &p);
454 g_assert (gclass->generic_container);
456 memset (&ctx, 0, sizeof (ctx));
457 ctx.class_inst = decode_generic_inst (module, p, &p);
460 type = mono_class_inflate_generic_type (&gclass->byval_arg, &ctx);
461 klass = mono_class_from_mono_type (type);
462 mono_metadata_free_type (type);
465 case MONO_AOT_TYPEREF_VAR: {
467 MonoGenericContainer *container = NULL;
468 int type = decode_value (p, &p);
469 int num = decode_value (p, &p);
470 gboolean has_container = decode_value (p, &p);
471 MonoTypeEnum gshared_constraint = 0;
474 gboolean is_method = decode_value (p, &p);
477 MonoMethod *method_def;
478 g_assert (type == MONO_TYPE_MVAR);
479 method_def = decode_resolve_method_ref (module, p, &p);
483 container = mono_method_get_generic_container (method_def);
485 MonoClass *class_def;
486 g_assert (type == MONO_TYPE_VAR);
487 class_def = decode_klass_ref (module, p, &p);
491 container = class_def->generic_container;
494 gshared_constraint = decode_value (p, &p);
497 t = g_new0 (MonoType, 1);
500 t->data.generic_param = mono_generic_container_get_param (container, num);
501 g_assert (gshared_constraint == 0);
504 MonoGenericParam *par = (MonoGenericParam*)mono_image_alloc0 (module->assembly->image, sizeof (MonoGenericParamFull));
506 par->gshared_constraint = gshared_constraint;
508 par->image = mono_defaults.corlib;
509 t->data.generic_param = par;
512 // FIXME: Maybe use types directly to avoid
513 // the overhead of creating MonoClass-es
514 klass = mono_class_from_mono_type (t);
519 case MONO_AOT_TYPEREF_ARRAY:
521 rank = decode_value (p, &p);
522 eklass = decode_klass_ref (module, p, &p);
523 klass = mono_array_class_get (eklass, rank);
525 case MONO_AOT_TYPEREF_PTR: {
528 t = decode_type (module, p, &p);
531 klass = mono_class_from_mono_type (t);
535 case MONO_AOT_TYPEREF_BLOB_INDEX: {
536 guint32 offset = decode_value (p, &p);
539 p2 = module->blob + offset;
540 klass = decode_klass_ref (module, p2, &p2);
544 g_assert_not_reached ();
547 //printf ("BLA: %s\n", mono_type_full_name (&klass->byval_arg));
552 static MonoClassField*
553 decode_field_info (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
555 MonoClass *klass = decode_klass_ref (module, buf, &buf);
562 token = MONO_TOKEN_FIELD_DEF + decode_value (p, &p);
566 return mono_class_get_field (klass, token);
570 * Parse a MonoType encoded by encode_type () in aot-compiler.c. Return malloc-ed
574 decode_type (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
579 t = g_malloc0 (sizeof (MonoType));
582 if (*p == MONO_TYPE_PINNED) {
585 } else if (*p == MONO_TYPE_BYREF) {
598 case MONO_TYPE_BOOLEAN:
612 case MONO_TYPE_STRING:
613 case MONO_TYPE_OBJECT:
614 case MONO_TYPE_TYPEDBYREF:
616 case MONO_TYPE_VALUETYPE:
617 case MONO_TYPE_CLASS:
618 t->data.klass = decode_klass_ref (module, p, &p);
620 case MONO_TYPE_SZARRAY:
621 t->data.klass = decode_klass_ref (module, p, &p);
627 t->data.type = decode_type (module, p, &p);
629 case MONO_TYPE_GENERICINST: {
631 MonoGenericContext ctx;
635 gclass = decode_klass_ref (module, p, &p);
638 g_assert (gclass->generic_container);
640 memset (&ctx, 0, sizeof (ctx));
641 ctx.class_inst = decode_generic_inst (module, p, &p);
644 type = mono_class_inflate_generic_type (&gclass->byval_arg, &ctx);
645 klass = mono_class_from_mono_type (type);
646 t->data.generic_class = klass->generic_class;
649 case MONO_TYPE_ARRAY: {
650 MonoArrayType *array;
653 // FIXME: memory management
654 array = g_new0 (MonoArrayType, 1);
655 array->eklass = decode_klass_ref (module, p, &p);
658 array->rank = decode_value (p, &p);
659 array->numsizes = decode_value (p, &p);
662 array->sizes = g_malloc0 (sizeof (int) * array->numsizes);
663 for (i = 0; i < array->numsizes; ++i)
664 array->sizes [i] = decode_value (p, &p);
666 array->numlobounds = decode_value (p, &p);
667 if (array->numlobounds)
668 array->lobounds = g_malloc0 (sizeof (int) * array->numlobounds);
669 for (i = 0; i < array->numlobounds; ++i)
670 array->lobounds [i] = decode_value (p, &p);
671 t->data.array = array;
675 case MONO_TYPE_MVAR: {
676 MonoClass *klass = decode_klass_ref (module, p, &p);
679 t->data.generic_param = klass->byval_arg.data.generic_param;
683 g_assert_not_reached ();
691 // FIXME: Error handling, memory management
693 static MonoMethodSignature*
694 decode_signature_with_target (MonoAotModule *module, MonoMethodSignature *target, guint8 *buf, guint8 **endbuf)
696 MonoMethodSignature *sig;
698 int i, param_count, call_conv;
700 gboolean hasthis, explicit_this, has_gen_params;
704 has_gen_params = (flags & 0x10) != 0;
705 hasthis = (flags & 0x20) != 0;
706 explicit_this = (flags & 0x40) != 0;
707 call_conv = flags & 0x0F;
710 /* gen_param_count = */ decode_value (p, &p);
711 param_count = decode_value (p, &p);
712 if (target && param_count != target->param_count)
714 sig = g_malloc0 (MONO_SIZEOF_METHOD_SIGNATURE + param_count * sizeof (MonoType *));
715 sig->param_count = param_count;
716 sig->sentinelpos = -1;
717 sig->hasthis = hasthis;
718 sig->explicit_this = explicit_this;
719 sig->call_convention = call_conv;
720 sig->param_count = param_count;
721 sig->ret = decode_type (module, p, &p);
722 for (i = 0; i < param_count; ++i) {
723 if (*p == MONO_TYPE_SENTINEL) {
724 g_assert (sig->call_convention == MONO_CALL_VARARG);
725 sig->sentinelpos = i;
728 sig->params [i] = decode_type (module, p, &p);
731 if (sig->call_convention == MONO_CALL_VARARG && sig->sentinelpos == -1)
732 sig->sentinelpos = sig->param_count;
739 static MonoMethodSignature*
740 decode_signature (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
742 return decode_signature_with_target (module, NULL, buf, endbuf);
746 sig_matches_target (MonoAotModule *module, MonoMethod *target, guint8 *buf, guint8 **endbuf)
748 MonoMethodSignature *sig;
752 sig = decode_signature_with_target (module, mono_method_signature (target), p, &p);
753 res = sig && mono_metadata_signature_equal (mono_method_signature (target), sig);
759 /* Stores information returned by decode_method_ref () */
764 gboolean no_aot_trampoline;
768 * decode_method_ref_with_target:
770 * Decode a method reference, storing the image/token into a MethodRef structure.
771 * This avoids loading metadata for the method if the caller does not need it. If the method has
772 * no token, then it is loaded from metadata and ref->method is set to the method instance.
773 * If TARGET is non-NULL, abort decoding if it can be determined that the decoded method
774 * couldn't resolve to TARGET, and return FALSE.
775 * There are some kinds of method references which only support a non-null TARGET.
776 * This means that its not possible to decode this into a method, only to check
777 * that the method reference matches a given method. This is normally not a problem
778 * as these wrappers only occur in the extra_methods table, where we already have
779 * a method we want to lookup.
782 decode_method_ref_with_target (MonoAotModule *module, MethodRef *ref, MonoMethod *target, guint8 *buf, guint8 **endbuf)
784 guint32 image_index, value;
785 MonoImage *image = NULL;
788 memset (ref, 0, sizeof (MethodRef));
790 value = decode_value (p, &p);
791 image_index = value >> 24;
793 if (image_index == MONO_AOT_METHODREF_NO_AOT_TRAMPOLINE) {
794 ref->no_aot_trampoline = TRUE;
795 value = decode_value (p, &p);
796 image_index = value >> 24;
799 if (image_index < MONO_AOT_METHODREF_MIN || image_index == MONO_AOT_METHODREF_METHODSPEC || image_index == MONO_AOT_METHODREF_GINST) {
800 if (target && target->wrapper_type)
804 if (image_index == MONO_AOT_METHODREF_WRAPPER) {
805 guint32 wrapper_type;
807 wrapper_type = decode_value (p, &p);
809 if (target && target->wrapper_type != wrapper_type)
813 image = mono_defaults.corlib;
815 switch (wrapper_type) {
816 #ifndef DISABLE_REMOTING
817 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK: {
818 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
822 mono_class_init (m->klass);
823 ref->method = mono_marshal_get_remoting_invoke_with_check (m);
826 case MONO_WRAPPER_PROXY_ISINST: {
827 MonoClass *klass = decode_klass_ref (module, p, &p);
830 ref->method = mono_marshal_get_proxy_cancast (klass);
833 case MONO_WRAPPER_LDFLD:
834 case MONO_WRAPPER_LDFLDA:
835 case MONO_WRAPPER_STFLD:
836 case MONO_WRAPPER_ISINST: {
837 MonoClass *klass = decode_klass_ref (module, p, &p);
840 if (wrapper_type == MONO_WRAPPER_LDFLD)
841 ref->method = mono_marshal_get_ldfld_wrapper (&klass->byval_arg);
842 else if (wrapper_type == MONO_WRAPPER_LDFLDA)
843 ref->method = mono_marshal_get_ldflda_wrapper (&klass->byval_arg);
844 else if (wrapper_type == MONO_WRAPPER_STFLD)
845 ref->method = mono_marshal_get_stfld_wrapper (&klass->byval_arg);
846 else if (wrapper_type == MONO_WRAPPER_ISINST)
847 ref->method = mono_marshal_get_isinst (klass);
849 g_assert_not_reached ();
852 case MONO_WRAPPER_LDFLD_REMOTE:
853 ref->method = mono_marshal_get_ldfld_remote_wrapper (NULL);
855 case MONO_WRAPPER_STFLD_REMOTE:
856 ref->method = mono_marshal_get_stfld_remote_wrapper (NULL);
859 case MONO_WRAPPER_ALLOC: {
860 int atype = decode_value (p, &p);
862 ref->method = mono_gc_get_managed_allocator_by_type (atype);
863 g_assert (ref->method);
866 case MONO_WRAPPER_WRITE_BARRIER:
867 ref->method = mono_gc_get_write_barrier ();
869 case MONO_WRAPPER_STELEMREF: {
870 int subtype = decode_value (p, &p);
872 if (subtype == WRAPPER_SUBTYPE_NONE) {
873 ref->method = mono_marshal_get_stelemref ();
874 } else if (subtype == WRAPPER_SUBTYPE_VIRTUAL_STELEMREF) {
878 kind = decode_value (p, &p);
880 /* Can't decode this */
883 if (target->wrapper_type == MONO_WRAPPER_STELEMREF) {
884 info = mono_marshal_get_wrapper_info (target);
887 if (info->subtype == subtype && info->d.virtual_stelemref.kind == kind)
888 ref->method = target;
895 g_assert_not_reached ();
899 case MONO_WRAPPER_SYNCHRONIZED: {
900 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
904 ref->method = mono_marshal_get_synchronized_wrapper (m);
907 case MONO_WRAPPER_UNKNOWN: {
908 int subtype = decode_value (p, &p);
910 if (subtype == WRAPPER_SUBTYPE_PTR_TO_STRUCTURE || subtype == WRAPPER_SUBTYPE_STRUCTURE_TO_PTR) {
911 MonoClass *klass = decode_klass_ref (module, p, &p);
918 if (klass != target->klass)
921 if (subtype == WRAPPER_SUBTYPE_PTR_TO_STRUCTURE) {
922 if (strcmp (target->name, "PtrToStructure"))
924 ref->method = mono_marshal_get_ptr_to_struct (klass);
926 if (strcmp (target->name, "StructureToPtr"))
928 ref->method = mono_marshal_get_struct_to_ptr (klass);
930 } else if (subtype == WRAPPER_SUBTYPE_SYNCHRONIZED_INNER) {
931 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
935 ref->method = mono_marshal_get_synchronized_inner_wrapper (m);
936 } else if (subtype == WRAPPER_SUBTYPE_ARRAY_ACCESSOR) {
937 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
941 ref->method = mono_marshal_get_array_accessor_wrapper (m);
942 } else if (subtype == WRAPPER_SUBTYPE_GSHAREDVT_IN) {
943 ref->method = mono_marshal_get_gsharedvt_in_wrapper ();
944 } else if (subtype == WRAPPER_SUBTYPE_GSHAREDVT_OUT) {
945 ref->method = mono_marshal_get_gsharedvt_out_wrapper ();
947 g_assert_not_reached ();
951 case MONO_WRAPPER_MANAGED_TO_MANAGED: {
952 int subtype = decode_value (p, &p);
954 if (subtype == WRAPPER_SUBTYPE_ELEMENT_ADDR) {
955 int rank = decode_value (p, &p);
956 int elem_size = decode_value (p, &p);
958 ref->method = mono_marshal_get_array_address (rank, elem_size);
959 } else if (subtype == WRAPPER_SUBTYPE_STRING_CTOR) {
963 m = decode_resolve_method_ref (module, p, &p);
969 g_assert (target->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED);
971 info = mono_marshal_get_wrapper_info (target);
972 if (info && info->subtype == subtype && info->d.string_ctor.method == m)
973 ref->method = target;
979 case MONO_WRAPPER_MANAGED_TO_NATIVE: {
981 int subtype = decode_value (p, &p);
984 if (subtype == WRAPPER_SUBTYPE_ICALL_WRAPPER) {
989 if (strcmp (target->name, name) != 0)
991 ref->method = target;
993 m = decode_resolve_method_ref (module, p, &p);
998 /* This should only happen when looking for an extra method */
1001 if (mono_marshal_method_from_wrapper (target) == m)
1002 ref->method = target;
1008 case MONO_WRAPPER_CASTCLASS: {
1009 int subtype = decode_value (p, &p);
1011 if (subtype == WRAPPER_SUBTYPE_CASTCLASS_WITH_CACHE)
1012 ref->method = mono_marshal_get_castclass_with_cache ();
1013 else if (subtype == WRAPPER_SUBTYPE_ISINST_WITH_CACHE)
1014 ref->method = mono_marshal_get_isinst_with_cache ();
1016 g_assert_not_reached ();
1019 case MONO_WRAPPER_RUNTIME_INVOKE: {
1020 int subtype = decode_value (p, &p);
1025 if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_DYNAMIC) {
1026 if (strcmp (target->name, "runtime_invoke_dynamic") != 0)
1028 ref->method = target;
1029 } else if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_DIRECT) {
1030 /* Direct wrapper */
1031 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
1035 ref->method = mono_marshal_get_runtime_invoke (m, FALSE);
1036 } else if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_VIRTUAL) {
1037 /* Virtual direct wrapper */
1038 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
1042 ref->method = mono_marshal_get_runtime_invoke (m, TRUE);
1044 MonoMethodSignature *sig;
1047 sig = decode_signature_with_target (module, NULL, p, &p);
1048 info = mono_marshal_get_wrapper_info (target);
1051 if (info->subtype != subtype)
1053 g_assert (info->d.runtime_invoke.sig);
1054 if (mono_metadata_signature_equal (sig, info->d.runtime_invoke.sig))
1055 ref->method = target;
1061 case MONO_WRAPPER_DELEGATE_INVOKE:
1062 case MONO_WRAPPER_DELEGATE_BEGIN_INVOKE:
1063 case MONO_WRAPPER_DELEGATE_END_INVOKE: {
1064 gboolean is_inflated = decode_value (p, &p);
1065 WrapperSubtype subtype;
1069 MonoMethod *invoke, *wrapper;
1071 klass = decode_klass_ref (module, p, &p);
1075 switch (wrapper_type) {
1076 case MONO_WRAPPER_DELEGATE_INVOKE:
1077 invoke = mono_get_delegate_invoke (klass);
1078 wrapper = mono_marshal_get_delegate_invoke (invoke, NULL);
1080 case MONO_WRAPPER_DELEGATE_BEGIN_INVOKE:
1081 invoke = mono_get_delegate_begin_invoke (klass);
1082 wrapper = mono_marshal_get_delegate_begin_invoke (invoke);
1084 case MONO_WRAPPER_DELEGATE_END_INVOKE:
1085 invoke = mono_get_delegate_end_invoke (klass);
1086 wrapper = mono_marshal_get_delegate_end_invoke (invoke);
1089 g_assert_not_reached ();
1092 if (target && wrapper != target)
1094 ref->method = wrapper;
1097 * These wrappers are associated with a signature, not with a method.
1098 * Since we can't decode them into methods, they need a target method.
1103 if (wrapper_type == MONO_WRAPPER_DELEGATE_INVOKE) {
1106 subtype = decode_value (p, &p);
1107 info = mono_marshal_get_wrapper_info (target);
1109 if (info->subtype != subtype)
1112 if (subtype != WRAPPER_SUBTYPE_NONE)
1116 if (sig_matches_target (module, target, p, &p))
1117 ref->method = target;
1123 case MONO_WRAPPER_NATIVE_TO_MANAGED: {
1127 m = decode_resolve_method_ref (module, p, &p);
1130 klass = decode_klass_ref (module, p, &p);
1133 ref->method = mono_marshal_get_managed_wrapper (m, klass, 0);
1137 g_assert_not_reached ();
1139 } else if (image_index == MONO_AOT_METHODREF_METHODSPEC) {
1140 image_index = decode_value (p, &p);
1141 ref->token = decode_value (p, &p);
1143 image = load_image (module, image_index, TRUE);
1146 } else if (image_index == MONO_AOT_METHODREF_GINST) {
1149 MonoGenericContext ctx;
1152 * These methods do not have a token which resolves them, so we
1153 * resolve them immediately.
1155 klass = decode_klass_ref (module, p, &p);
1159 if (target && target->klass != klass)
1162 image_index = decode_value (p, &p);
1163 ref->token = decode_value (p, &p);
1165 image = load_image (module, image_index, TRUE);
1169 ref->method = mono_get_method_full (image, ref->token, NULL, NULL);
1173 memset (&ctx, 0, sizeof (ctx));
1175 if (FALSE && klass->generic_class) {
1176 ctx.class_inst = klass->generic_class->context.class_inst;
1177 ctx.method_inst = NULL;
1179 ref->method = mono_class_inflate_generic_method_full_checked (ref->method, klass, &ctx, &error);
1180 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
1183 memset (&ctx, 0, sizeof (ctx));
1185 if (!decode_generic_context (module, &ctx, p, &p))
1188 ref->method = mono_class_inflate_generic_method_full_checked (ref->method, klass, &ctx, &error);
1189 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
1190 } else if (image_index == MONO_AOT_METHODREF_ARRAY) {
1194 klass = decode_klass_ref (module, p, &p);
1197 method_type = decode_value (p, &p);
1198 switch (method_type) {
1200 ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank);
1203 ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank * 2);
1206 ref->method = mono_class_get_method_from_name (klass, "Get", -1);
1209 ref->method = mono_class_get_method_from_name (klass, "Address", -1);
1212 ref->method = mono_class_get_method_from_name (klass, "Set", -1);
1215 g_assert_not_reached ();
1218 if (image_index == MONO_AOT_METHODREF_LARGE_IMAGE_INDEX) {
1219 image_index = decode_value (p, &p);
1220 value = decode_value (p, &p);
1223 ref->token = MONO_TOKEN_METHOD_DEF | (value & 0xffffff);
1225 image = load_image (module, image_index, TRUE);
1238 decode_method_ref (MonoAotModule *module, MethodRef *ref, guint8 *buf, guint8 **endbuf)
1240 return decode_method_ref_with_target (module, ref, NULL, buf, endbuf);
1244 * decode_resolve_method_ref_with_target:
1246 * Similar to decode_method_ref, but resolve and return the method itself.
1249 decode_resolve_method_ref_with_target (MonoAotModule *module, MonoMethod *target, guint8 *buf, guint8 **endbuf)
1254 res = decode_method_ref_with_target (module, &ref, target, buf, endbuf);
1261 return mono_get_method (ref.image, ref.token, NULL);
1265 decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
1267 return decode_resolve_method_ref_with_target (module, NULL, buf, endbuf);
1270 #ifdef ENABLE_AOT_CACHE
1276 * - Add options for controlling the cache size
1277 * - Handle full cache by deleting old assemblies lru style
1278 * - Maybe add a threshold after an assembly is AOT compiled
1279 * - Add options for enabling this for specific main assemblies
1282 /* The cache directory */
1283 static char *cache_dir;
1285 /* The number of assemblies AOTed in this run */
1286 static int cache_count;
1288 /* Whenever to AOT in-process */
1289 static gboolean in_process;
1292 collect_assemblies (gpointer data, gpointer user_data)
1294 MonoAssembly *ass = data;
1295 GSList **l = user_data;
1297 *l = g_slist_prepend (*l, ass);
1300 #define SHA1_DIGEST_LENGTH 20
1303 * get_aot_config_hash:
1305 * Return a hash for all the version information an AOT module depends on.
1307 static G_GNUC_UNUSED char*
1308 get_aot_config_hash (MonoAssembly *assembly)
1311 GSList *l, *assembly_list = NULL;
1314 guint8 digest [SHA1_DIGEST_LENGTH];
1317 build_info = mono_get_runtime_build_info ();
1319 s = g_string_new (build_info);
1321 mono_assembly_foreach (collect_assemblies, &assembly_list);
1324 * The assembly list includes the current assembly as well, no need
1327 for (l = assembly_list; l; l = l->next) {
1328 MonoAssembly *ass = l->data;
1330 g_string_append (s, "_");
1331 g_string_append (s, ass->aname.name);
1332 g_string_append (s, "_");
1333 g_string_append (s, ass->image->guid);
1336 for (i = 0; i < s->len; ++i) {
1337 if (!isalnum (s->str [i]) && s->str [i] != '-')
1341 mono_sha1_get_digest ((guint8*)s->str, s->len, digest);
1343 digest_str = g_malloc0 ((SHA1_DIGEST_LENGTH * 2) + 1);
1344 for (i = 0; i < SHA1_DIGEST_LENGTH; ++i)
1345 sprintf (digest_str + (i * 2), "%02x", digest [i]);
1347 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: file dependencies: %s, hash %s", s->str, digest_str);
1349 g_string_free (s, TRUE);
1355 aot_cache_init (void)
1359 enable_aot_cache = TRUE;
1364 * aot_cache_load_module:
1366 * Load the AOT image corresponding to ASSEMBLY from the aot cache, AOTing it if neccessary.
1369 aot_cache_load_module (MonoAssembly *assembly, char **aot_name)
1371 MonoAotCacheConfig *config;
1373 char *fname, *tmp2, *aot_options, *failure_fname;
1385 if (image_is_dynamic (assembly->image))
1388 /* Check in the list of assemblies enabled for aot caching */
1389 config = mono_get_aot_cache_config ();
1393 MonoDomain *domain = mono_domain_get ();
1394 MonoAssembly *entry_assembly = domain->entry_assembly;
1396 // FIXME: This cannot be used for mscorlib during startup, since entry_assembly is not set yet
1397 for (l = config->apps; l; l = l->next) {
1400 if ((entry_assembly && !strcmp (entry_assembly->aname.name, n)) || (!entry_assembly && !strcmp (assembly->aname.name, n)))
1408 for (l = config->assemblies; l; l = l->next) {
1411 if (!strcmp (assembly->aname.name, n))
1421 home = g_get_home_dir ();
1424 cache_dir = g_strdup_printf ("%s/Library/Caches/mono/aot-cache", home);
1425 if (!g_file_test (cache_dir, G_FILE_TEST_EXISTS|G_FILE_TEST_IS_DIR))
1426 g_mkdir_with_parents (cache_dir, 0777);
1430 * The same assembly can be used in multiple configurations, i.e. multiple
1431 * versions of the runtime, with multiple versions of dependent assemblies etc.
1432 * To handle this, we compute a version string containing all this information, hash it,
1433 * and use the hash as a filename suffix.
1435 hash = get_aot_config_hash (assembly);
1437 tmp2 = g_strdup_printf ("%s-%s%s", assembly->image->assembly_name, hash, MONO_SOLIB_EXT);
1438 fname = g_build_filename (cache_dir, tmp2, NULL);
1442 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: loading from cache: '%s'.", fname);
1443 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
1446 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: found in cache: '%s'.", fname);
1450 if (!strcmp (assembly->aname.name, "mscorlib") && !mscorlib_aot_loaded)
1452 * Can't AOT this during startup, so we AOT it when called later from
1453 * mono_aot_get_method ().
1457 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: not found.");
1459 /* Only AOT one assembly per run to avoid slowing down execution too much */
1460 if (cache_count > 0)
1464 /* Check for previous failure */
1465 failure_fname = g_strdup_printf ("%s.failure", fname);
1466 failure_file = fopen (failure_fname, "r");
1468 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: assembly '%s' previously failed to compile '%s' ('%s')... ", assembly->image->name, fname, failure_fname);
1469 g_free (failure_fname);
1472 g_free (failure_fname);
1473 fclose (failure_file);
1476 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: compiling assembly '%s', logfile: '%s.log'... ", assembly->image->name, fname);
1479 * We need to invoke the AOT compiler here. There are multiple approaches:
1480 * - spawn a new runtime process. This can be hard when running with mkbundle, and
1481 * its hard to make the new process load the same set of assemblies.
1482 * - doing it in-process. This exposes the current process to bugs/leaks/side effects of
1484 * - fork a new process and do the work there.
1487 aot_options = g_strdup_printf ("outfile=%s,internal-logfile=%s.log%s%s", fname, fname, config->aot_options ? "," : "", config->aot_options ? config->aot_options : "");
1488 /* Maybe due this in another thread ? */
1489 res = mono_compile_assembly (assembly, mono_parse_default_optimizations (NULL), aot_options);
1491 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: compilation failed.");
1492 failure_fname = g_strdup_printf ("%s.failure", fname);
1493 failure_file = fopen (failure_fname, "a+");
1494 fclose (failure_file);
1495 g_free (failure_fname);
1497 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: compilation succeeded.");
1501 * - Avoid waiting for the aot process to finish ?
1502 * (less overhead, but multiple processes could aot the same assembly at the same time)
1511 logfile_name = g_strdup_printf ("%s/aot.log", cache_dir);
1512 logfile = fopen (logfile_name, "a+");
1513 g_free (logfile_name);
1515 dup2 (fileno (logfile), 1);
1516 dup2 (fileno (logfile), 2);
1518 aot_options = g_strdup_printf ("outfile=%s", fname);
1519 res = mono_compile_assembly (assembly, mono_parse_default_optimizations (NULL), aot_options);
1527 waitpid (pid, &exit_status, 0);
1528 if (!WIFEXITED (exit_status) && (WEXITSTATUS (exit_status) == 0))
1529 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: failed.");
1531 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: succeeded.");
1535 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
1543 aot_cache_init (void)
1548 aot_cache_load_module (MonoAssembly *assembly, char **aot_name)
1556 find_symbol (MonoDl *module, gpointer *globals, const char *name, gpointer *value)
1560 guint16 *table, *entry;
1563 char *symbol = (char*)name;
1566 symbol = g_strdup_printf ("_%s", name);
1569 /* The first entry points to the hash */
1570 table = globals [0];
1573 table_size = table [0];
1576 hash = mono_metadata_str_hash (symbol) % table_size;
1578 entry = &table [hash * 2];
1580 /* Search the hash for the index into the globals table */
1582 while (entry [0] != 0) {
1583 guint32 index = entry [0] - 1;
1584 guint32 next = entry [1];
1586 //printf ("X: %s %s\n", (char*)globals [index * 2], name);
1588 if (!strcmp (globals [index * 2], symbol)) {
1589 global_index = index;
1594 entry = &table [next * 2];
1600 if (global_index != -1)
1601 *value = globals [global_index * 2 + 1];
1608 char *err = mono_dl_symbol (module, name, value);
1616 check_usable (MonoAssembly *assembly, MonoAotFileInfo *info, char **out_msg)
1620 gboolean usable = TRUE;
1623 guint32 excluded_cpu_optimizations;
1625 if (strcmp (assembly->image->guid, info->assembly_guid)) {
1626 msg = g_strdup_printf ("doesn't match assembly");
1630 build_info = mono_get_runtime_build_info ();
1631 if (strlen (info->runtime_version) > 0 && strcmp (info->runtime_version, build_info)) {
1632 msg = g_strdup_printf ("compiled against runtime version '%s' while this runtime has version '%s'", info->runtime_version, build_info);
1635 g_free (build_info);
1637 full_aot = info->flags & MONO_AOT_FILE_FLAG_FULL_AOT;
1639 if (mono_aot_only && !full_aot) {
1640 msg = g_strdup_printf ("not compiled with --aot=full");
1643 if (!mono_aot_only && full_aot) {
1644 msg = g_strdup_printf ("compiled with --aot=full");
1648 /* mono_arch_find_imt_method () requires this */
1649 if ((info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM) && !mono_use_llvm) {
1650 msg = g_strdup_printf ("compiled against LLVM");
1653 if (!(info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM) && mono_use_llvm) {
1654 msg = g_strdup_printf ("not compiled against LLVM");
1658 if (mini_get_debug_options ()->mdb_optimizations && !(info->flags & MONO_AOT_FILE_FLAG_DEBUG) && !full_aot) {
1659 msg = g_strdup_printf ("not compiled for debugging");
1663 mono_arch_cpu_optimizations (&excluded_cpu_optimizations);
1664 if (info->opts & excluded_cpu_optimizations) {
1665 msg = g_strdup_printf ("compiled with unsupported CPU optimizations");
1669 if (!mono_aot_only && (info->simd_opts & ~mono_arch_cpu_enumerate_simd_versions ())) {
1670 msg = g_strdup_printf ("compiled with unsupported SIMD extensions");
1676 if (info->gc_name_index != -1) {
1677 char *gc_name = (char*)&blob [info->gc_name_index];
1678 const char *current_gc_name = mono_gc_get_gc_name ();
1680 if (strcmp (current_gc_name, gc_name) != 0) {
1681 msg = g_strdup_printf ("compiled against GC %s, while the current runtime uses GC %s.\n", gc_name, current_gc_name);
1691 * TABLE should point to a table of call instructions. Return the address called by the INDEXth entry.
1694 get_call_table_entry (void *table, int index)
1696 #if defined(TARGET_ARM)
1701 ins_addr = (guint32*)table + index;
1703 if ((ins >> ARMCOND_SHIFT) == ARMCOND_NV) {
1705 offset = (((int)(((ins & 0xffffff) << 1) | ((ins >> 24) & 0x1))) << 7) >> 7;
1706 return (char*)ins_addr + (offset * 2) + 8 + 1;
1708 offset = (((int)ins & 0xffffff) << 8) >> 8;
1709 return (char*)ins_addr + (offset * 4) + 8;
1711 #elif defined(TARGET_ARM64)
1712 return mono_arch_get_call_target ((guint8*)table + (index * 4) + 4);
1713 #elif defined(TARGET_X86) || defined(TARGET_AMD64)
1714 /* The callee expects an ip which points after the call */
1715 return mono_arch_get_call_target ((guint8*)table + (index * 5) + 5);
1717 g_assert_not_reached ();
1723 load_aot_module (MonoAssembly *assembly, gpointer user_data)
1726 MonoAotModule *amodule;
1728 gboolean usable = TRUE;
1729 char *version_symbol = NULL;
1731 gpointer *globals = NULL;
1732 MonoAotFileInfo *info = NULL;
1735 gboolean do_load_image = TRUE;
1736 int align_double, align_int64;
1738 if (mono_compile_aot)
1741 if (assembly->image->aot_module)
1743 * Already loaded. This can happen because the assembly loading code might invoke
1744 * the assembly load hooks multiple times for the same assembly.
1748 if (image_is_dynamic (assembly->image) || assembly->ref_only)
1751 if (mono_security_cas_enabled ())
1755 if (static_aot_modules)
1756 info = g_hash_table_lookup (static_aot_modules, assembly->aname.name);
1764 /* Statically linked AOT module */
1765 aot_name = g_strdup_printf ("%s", assembly->aname.name);
1766 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "Found statically linked AOT module '%s'.\n", aot_name);
1767 globals = info->globals;
1769 if (enable_aot_cache)
1770 sofile = aot_cache_load_module (assembly, &aot_name);
1773 aot_name = g_strdup_printf ("%s%s", assembly->image->name, MONO_SOLIB_EXT);
1775 sofile = mono_dl_open (aot_name, MONO_DL_LAZY, &err);
1778 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module '%s' not found: %s\n", aot_name, err);
1781 aot_name = g_strdup_printf ("%s/mono/aot-cache/%s/%s%s", mono_assembly_getrootdir(), ARCHITECTURE, g_path_get_basename (assembly->image->name), MONO_SOLIB_EXT);
1782 sofile = mono_dl_open (aot_name, MONO_DL_LAZY, &err);
1784 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module '%s' not found: %s\n", aot_name, err);
1792 if (!sofile && !globals) {
1793 if (mono_aot_only && assembly->image->tables [MONO_TABLE_METHOD].rows) {
1794 fprintf (stderr, "Failed to load AOT module '%s' in aot-only mode.\n", aot_name);
1802 find_symbol (sofile, globals, "mono_aot_version", (gpointer *) &version_symbol);
1803 find_symbol (sofile, globals, "mono_aot_file_info", (gpointer*)&info);
1806 if (version_symbol) {
1807 /* Old file format */
1808 version = atoi (version_symbol);
1811 version = info->version;
1814 if (version != MONO_AOT_FILE_VERSION) {
1815 msg = g_strdup_printf ("wrong file format version (expected %d got %d)", MONO_AOT_FILE_VERSION, version);
1818 usable = check_usable (assembly, info, &msg);
1822 if (mono_aot_only) {
1823 fprintf (stderr, "Failed to load AOT module '%s' while running in aot-only mode: %s.\n", aot_name, msg);
1826 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: module %s is unusable: %s.\n", aot_name, msg);
1831 mono_dl_close (sofile);
1832 assembly->image->aot_module = NULL;
1836 #if defined (TARGET_ARM) && defined (TARGET_MACH)
1841 memset (&t, 0, sizeof (MonoType));
1842 t.type = MONO_TYPE_R8;
1843 mono_type_size (&t, &align);
1844 align_double = align;
1846 memset (&t, 0, sizeof (MonoType));
1847 t.type = MONO_TYPE_I8;
1848 align_int64 = align;
1851 align_double = MONO_ABI_ALIGNOF (double);
1852 align_int64 = MONO_ABI_ALIGNOF (gint64);
1856 g_assert (info->double_align == align_double);
1857 g_assert (info->long_align == align_int64);
1858 g_assert (info->generic_tramp_num == MONO_TRAMPOLINE_NUM);
1862 amodule = g_new0 (MonoAotModule, 1);
1863 amodule->aot_name = aot_name;
1864 amodule->assembly = assembly;
1866 memcpy (&amodule->info, info, sizeof (*info));
1868 amodule->got = amodule->info.got;
1869 amodule->llvm_got = amodule->info.llvm_got;
1870 amodule->globals = globals;
1871 amodule->sofile = sofile;
1872 amodule->method_to_code = g_hash_table_new (mono_aligned_addr_hash, NULL);
1873 amodule->blob = blob;
1875 mono_mutex_init_recursive (&amodule->mutex);
1877 /* Read image table */
1879 guint32 table_len, i;
1882 table = info->image_table;
1885 table_len = *(guint32*)table;
1886 table += sizeof (guint32);
1887 amodule->image_table = g_new0 (MonoImage*, table_len);
1888 amodule->image_names = g_new0 (MonoAssemblyName, table_len);
1889 amodule->image_guids = g_new0 (char*, table_len);
1890 amodule->image_table_len = table_len;
1891 for (i = 0; i < table_len; ++i) {
1892 MonoAssemblyName *aname = &(amodule->image_names [i]);
1894 aname->name = g_strdup (table);
1895 table += strlen (table) + 1;
1896 amodule->image_guids [i] = g_strdup (table);
1897 table += strlen (table) + 1;
1899 aname->culture = g_strdup (table);
1900 table += strlen (table) + 1;
1901 memcpy (aname->public_key_token, table, strlen (table) + 1);
1902 table += strlen (table) + 1;
1904 table = ALIGN_PTR_TO (table, 8);
1905 aname->flags = *(guint32*)table;
1907 aname->major = *(guint32*)table;
1909 aname->minor = *(guint32*)table;
1911 aname->build = *(guint32*)table;
1913 aname->revision = *(guint32*)table;
1918 amodule->method_addresses = info->method_addresses;
1919 amodule->code = info->methods;
1921 /* Mask out thumb interop bit */
1922 amodule->code = (void*)((mgreg_t)amodule->code & ~1);
1924 amodule->jit_code_start = info->jit_code_start;
1925 amodule->jit_code_end = info->jit_code_end;
1926 amodule->method_info_offsets = info->method_info_offsets;
1927 amodule->ex_info_offsets = info->ex_info_offsets;
1928 amodule->class_info_offsets = info->class_info_offsets;
1929 amodule->class_name_table = info->class_name_table;
1930 amodule->extra_method_table = info->extra_method_table;
1931 amodule->extra_method_info_offsets = info->extra_method_info_offsets;
1932 amodule->unbox_trampolines = info->unbox_trampolines;
1933 amodule->unbox_trampolines_end = info->unbox_trampolines_end;
1934 amodule->unbox_trampoline_addresses = info->unbox_trampoline_addresses;
1935 amodule->unwind_info = info->unwind_info;
1936 amodule->mem_end = info->mem_end;
1937 amodule->mem_begin = amodule->code;
1938 amodule->plt = info->plt;
1939 amodule->plt_end = info->plt_end;
1940 amodule->mono_eh_frame = info->mono_eh_frame;
1941 amodule->trampolines [MONO_AOT_TRAMP_SPECIFIC] = info->specific_trampolines;
1942 amodule->trampolines [MONO_AOT_TRAMP_STATIC_RGCTX] = info->static_rgctx_trampolines;
1943 amodule->trampolines [MONO_AOT_TRAMP_IMT_THUNK] = info->imt_thunks;
1944 amodule->trampolines [MONO_AOT_TRAMP_GSHAREDVT_ARG] = info->gsharedvt_arg_trampolines;
1945 amodule->thumb_end = info->thumb_end;
1947 /* Compute code_offsets from the method addresses */
1948 amodule->code_offsets = g_malloc0 (amodule->info.nmethods * sizeof (gint32));
1949 for (i = 0; i < amodule->info.nmethods; ++i) {
1950 /* method_addresses () contains a table of branches, since the ios linker can update those correctly */
1953 addr = get_call_table_entry (amodule->method_addresses, i);
1955 if (addr == amodule->method_addresses)
1956 amodule->code_offsets [i] = 0xffffffff;
1958 amodule->code_offsets [i] = (char*)addr - (char*)amodule->code;
1961 if (make_unreadable) {
1962 #ifndef TARGET_WIN32
1964 guint8 *page_start, *page_end;
1967 addr = amodule->mem_begin;
1968 len = amodule->mem_end - amodule->mem_begin;
1970 /* Round down in both directions to avoid modifying data which is not ours */
1971 page_start = (guint8 *) (((gssize) (addr)) & ~ (mono_pagesize () - 1)) + mono_pagesize ();
1972 page_end = (guint8 *) (((gssize) (addr + len)) & ~ (mono_pagesize () - 1));
1973 if (page_end > page_start) {
1974 err = mono_mprotect (page_start, (page_end - page_start), MONO_MMAP_NONE);
1975 g_assert (err == 0);
1980 /* Compute the boundaries of LLVM code */
1981 if (info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM)
1982 compute_llvm_code_range (amodule, &amodule->llvm_code_start, &amodule->llvm_code_end);
1986 aot_code_low_addr = MIN (aot_code_low_addr, (gsize)amodule->jit_code_start);
1987 aot_code_high_addr = MAX (aot_code_high_addr, (gsize)amodule->jit_code_end);
1988 if (amodule->llvm_code_start) {
1989 aot_code_low_addr = MIN (aot_code_low_addr, (gsize)amodule->llvm_code_start);
1990 aot_code_high_addr = MAX (aot_code_high_addr, (gsize)amodule->llvm_code_end);
1993 g_hash_table_insert (aot_modules, assembly, amodule);
1996 mono_jit_info_add_aot_module (assembly->image, amodule->jit_code_start, amodule->jit_code_end);
1997 if (amodule->llvm_code_start)
1998 mono_jit_info_add_aot_module (assembly->image, amodule->llvm_code_start, amodule->llvm_code_end);
2000 assembly->image->aot_module = amodule;
2002 amodule->got [0] = assembly->image;
2004 if (mono_aot_only) {
2006 find_symbol (amodule->sofile, amodule->globals, "specific_trampolines_page", (gpointer *)&code);
2007 amodule->use_page_trampolines = code != NULL;
2008 /*g_warning ("using page trampolines: %d", amodule->use_page_trampolines);*/
2009 if (mono_defaults.corlib) {
2010 /* The second got slot contains the mscorlib got addr */
2011 MonoAotModule *mscorlib_amodule = mono_defaults.corlib->aot_module;
2013 amodule->got [1] = mscorlib_amodule->got;
2015 amodule->got [1] = amodule->got;
2019 if (mono_gc_is_moving ()) {
2022 memset (&ji, 0, sizeof (ji));
2023 ji.type = MONO_PATCH_INFO_GC_CARD_TABLE_ADDR;
2024 amodule->got [2] = mono_resolve_patch_target (NULL, mono_get_root_domain (), NULL, &ji, FALSE);
2026 memset (&ji, 0, sizeof (ji));
2027 ji.type = MONO_PATCH_INFO_GC_NURSERY_START;
2028 amodule->got [3] = mono_resolve_patch_target (NULL, mono_get_root_domain (), NULL, &ji, FALSE);
2031 if (amodule->llvm_got) {
2032 amodule->llvm_got [0] = amodule->got [0];
2033 amodule->llvm_got [1] = amodule->got [1];
2034 amodule->llvm_got [2] = amodule->got [2];
2035 amodule->llvm_got [3] = amodule->got [3];
2039 * Since we store methoddef and classdef tokens when referring to methods/classes in
2040 * referenced assemblies, we depend on the exact versions of the referenced assemblies.
2041 * MS calls this 'hard binding'. This means we have to load all referenced assemblies
2042 * non-lazily, since we can't handle out-of-date errors later.
2043 * The cached class info also depends on the exact assemblies.
2045 #if defined(__native_client__)
2046 /* TODO: Don't 'load_image' on mscorlib due to a */
2047 /* recursive loading problem. This should be */
2048 /* removed if mscorlib is loaded from disk. */
2049 if (strncmp(assembly->aname.name, "mscorlib", 8)) {
2050 do_load_image = TRUE;
2052 do_load_image = FALSE;
2055 if (do_load_image) {
2056 for (i = 0; i < amodule->image_table_len; ++i)
2057 load_image (amodule, i, FALSE);
2060 if (amodule->out_of_date) {
2061 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);
2062 if (mono_aot_only) {
2063 fprintf (stderr, "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);
2068 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: loaded AOT Module for %s.\n", assembly->image->name);
2072 * mono_aot_register_globals:
2074 * This is called by the ctor function in AOT images compiled with the
2075 * 'no-dlsym' option.
2078 mono_aot_register_globals (gpointer *globals)
2080 g_assert_not_reached ();
2084 * mono_aot_register_module:
2086 * This should be called by embedding code to register AOT modules statically linked
2087 * into the executable. AOT_INFO should be the value of the
2088 * 'mono_aot_module_<ASSEMBLY_NAME>_info' global symbol from the AOT module.
2091 mono_aot_register_module (gpointer *aot_info)
2095 MonoAotFileInfo *info = (gpointer)aot_info;
2097 g_assert (info->version == MONO_AOT_FILE_VERSION);
2099 globals = info->globals;
2102 aname = info->assembly_name;
2104 /* This could be called before startup */
2108 if (!static_aot_modules)
2109 static_aot_modules = g_hash_table_new (g_str_hash, g_str_equal);
2111 g_hash_table_insert (static_aot_modules, aname, info);
2118 mono_aot_init (void)
2120 mono_mutex_init_recursive (&aot_mutex);
2121 mono_mutex_init_recursive (&aot_page_mutex);
2122 aot_modules = g_hash_table_new (NULL, NULL);
2124 #ifndef __native_client__
2125 mono_install_assembly_load_hook (load_aot_module, NULL);
2127 mono_counters_register ("Async JIT info size", MONO_COUNTER_INT|MONO_COUNTER_JIT, &async_jit_info_size);
2129 if (g_getenv ("MONO_LASTAOT"))
2130 mono_last_aot_method = atoi (g_getenv ("MONO_LASTAOT"));
2135 mono_aot_cleanup (void)
2137 if (aot_jit_icall_hash)
2138 g_hash_table_destroy (aot_jit_icall_hash);
2140 g_hash_table_destroy (aot_modules);
2144 decode_cached_class_info (MonoAotModule *module, MonoCachedClassInfo *info, guint8 *buf, guint8 **endbuf)
2150 info->vtable_size = decode_value (buf, &buf);
2151 if (info->vtable_size == -1)
2154 flags = decode_value (buf, &buf);
2155 info->ghcimpl = (flags >> 0) & 0x1;
2156 info->has_finalize = (flags >> 1) & 0x1;
2157 info->has_cctor = (flags >> 2) & 0x1;
2158 info->has_nested_classes = (flags >> 3) & 0x1;
2159 info->blittable = (flags >> 4) & 0x1;
2160 info->has_references = (flags >> 5) & 0x1;
2161 info->has_static_refs = (flags >> 6) & 0x1;
2162 info->no_special_static_fields = (flags >> 7) & 0x1;
2163 info->is_generic_container = (flags >> 8) & 0x1;
2165 if (info->has_cctor) {
2166 res = decode_method_ref (module, &ref, buf, &buf);
2169 info->cctor_token = ref.token;
2171 if (info->has_finalize) {
2172 res = decode_method_ref (module, &ref, buf, &buf);
2175 info->finalize_image = ref.image;
2176 info->finalize_token = ref.token;
2179 info->instance_size = decode_value (buf, &buf);
2180 info->class_size = decode_value (buf, &buf);
2181 info->packing_size = decode_value (buf, &buf);
2182 info->min_align = decode_value (buf, &buf);
2190 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
2193 MonoClass *klass = vtable->klass;
2194 MonoAotModule *amodule = klass->image->aot_module;
2196 MonoCachedClassInfo class_info;
2201 if (MONO_CLASS_IS_INTERFACE (klass) || klass->rank || !amodule)
2204 info = &amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
2207 err = decode_cached_class_info (amodule, &class_info, p, &p);
2211 for (i = 0; i < slot; ++i)
2212 decode_method_ref (amodule, &ref, p, &p);
2214 res = decode_method_ref (amodule, &ref, p, &p);
2217 if (ref.no_aot_trampoline)
2220 if (mono_metadata_token_index (ref.token) == 0 || mono_metadata_token_table (ref.token) != MONO_TABLE_METHOD)
2223 return mono_aot_get_method_from_token (domain, ref.image, ref.token);
2227 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
2229 MonoAotModule *amodule = klass->image->aot_module;
2233 if (klass->rank || !amodule)
2236 p = (guint8*)&amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
2238 err = decode_cached_class_info (amodule, res, p, &p);
2246 * mono_aot_get_class_from_name:
2248 * Obtains a MonoClass with a given namespace and a given name which is located in IMAGE,
2249 * using a cache stored in the AOT file.
2250 * Stores the resulting class in *KLASS if found, stores NULL otherwise.
2252 * Returns: TRUE if the klass was found/not found in the cache, FALSE if no aot file was
2256 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
2258 MonoAotModule *amodule = image->aot_module;
2259 guint16 *table, *entry;
2262 char full_name_buf [1024];
2264 const char *name2, *name_space2;
2266 guint32 cols [MONO_TYPEDEF_SIZE];
2267 GHashTable *nspace_table;
2269 if (!amodule || !amodule->class_name_table)
2272 amodule_lock (amodule);
2276 /* First look in the cache */
2277 if (!amodule->name_cache)
2278 amodule->name_cache = g_hash_table_new (g_str_hash, g_str_equal);
2279 nspace_table = g_hash_table_lookup (amodule->name_cache, name_space);
2281 *klass = g_hash_table_lookup (nspace_table, name);
2283 amodule_unlock (amodule);
2288 table_size = amodule->class_name_table [0];
2289 table = amodule->class_name_table + 1;
2291 if (name_space [0] == '\0')
2292 full_name = g_strdup_printf ("%s", name);
2294 if (strlen (name_space) + strlen (name) < 1000) {
2295 sprintf (full_name_buf, "%s.%s", name_space, name);
2296 full_name = full_name_buf;
2298 full_name = g_strdup_printf ("%s.%s", name_space, name);
2301 hash = mono_metadata_str_hash (full_name) % table_size;
2302 if (full_name != full_name_buf)
2305 entry = &table [hash * 2];
2307 if (entry [0] != 0) {
2308 t = &image->tables [MONO_TABLE_TYPEDEF];
2311 guint32 index = entry [0];
2312 guint32 next = entry [1];
2313 guint32 token = mono_metadata_make_token (MONO_TABLE_TYPEDEF, index);
2315 name_table_accesses ++;
2317 mono_metadata_decode_row (t, index - 1, cols, MONO_TYPEDEF_SIZE);
2319 name2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
2320 name_space2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
2322 if (!strcmp (name, name2) && !strcmp (name_space, name_space2)) {
2324 amodule_unlock (amodule);
2325 *klass = mono_class_get_checked (image, token, &error);
2326 if (!mono_error_ok (&error))
2327 mono_error_cleanup (&error); /* FIXME don't swallow the error */
2331 amodule_lock (amodule);
2332 nspace_table = g_hash_table_lookup (amodule->name_cache, name_space);
2333 if (!nspace_table) {
2334 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
2335 g_hash_table_insert (amodule->name_cache, (char*)name_space2, nspace_table);
2337 g_hash_table_insert (nspace_table, (char*)name2, *klass);
2338 amodule_unlock (amodule);
2344 entry = &table [next * 2];
2351 amodule_unlock (amodule);
2356 /* Compute the boundaries of the LLVM code for AMODULE. */
2358 compute_llvm_code_range (MonoAotModule *amodule, guint8 **code_start, guint8 **code_end)
2361 int version, fde_count;
2364 g_assert (amodule->mono_eh_frame);
2366 p = amodule->mono_eh_frame;
2368 /* p points to data emitted by LLVM in DwarfException::EmitMonoEHFrame () */
2372 g_assert (version == 3);
2375 p = ALIGN_PTR_TO (p, 4);
2377 fde_count = *(guint32*)p;
2381 if (fde_count > 1) {
2382 /* mono_aot_personality () */
2383 g_assert (table [0] == -1);
2384 *code_start = amodule->code + amodule->code_offsets [table [2]];
2385 *code_end = amodule->code + amodule->code_offsets [table [(fde_count - 1) * 2]] + table [fde_count * 2];
2393 * decode_mono_eh_frame:
2395 * Decode the EH information emitted by our modified LLVM compiler and construct a
2396 * MonoJitInfo structure from it.
2397 * LOCKING: Acquires the domain lock.
2400 decode_llvm_mono_eh_frame (MonoAotModule *amodule, MonoDomain *domain,
2401 MonoMethod *method, guint8 *code,
2402 MonoJitExceptionInfo *clauses, int num_clauses,
2403 MonoJitInfoFlags flags,
2405 int *this_reg, int *this_offset)
2408 guint8 *fde, *cie, *code_start, *code_end;
2409 int version, fde_count;
2411 int i, j, pos, left, right, offset, offset1, offset2, code_len;
2412 MonoJitExceptionInfo *ei;
2413 guint32 fde_len, ei_len, nested_len, nindex;
2414 gpointer *type_info;
2416 MonoLLVMFDEInfo info;
2418 g_assert (amodule->mono_eh_frame);
2420 p = amodule->mono_eh_frame;
2422 /* p points to data emitted by LLVM in DwarfMonoException::EmitMonoEHFrame () */
2426 g_assert (version == 3);
2428 /* func_encoding = *p; */
2430 p = ALIGN_PTR_TO (p, 4);
2432 fde_count = *(guint32*)p;
2436 /* There is +1 entry in the table */
2437 cie = p + ((fde_count + 1) * 8);
2439 /* Binary search in the table to find the entry for code */
2440 offset = code - amodule->code;
2444 pos = (left + right) / 2;
2446 /* The table contains method index/fde offset pairs */
2447 g_assert (table [(pos * 2)] != -1);
2448 offset1 = amodule->code_offsets [table [(pos * 2)]];
2449 if (pos + 1 == fde_count) {
2450 offset2 = amodule->llvm_code_end - amodule->llvm_code_start;
2452 g_assert (table [(pos + 1) * 2] != -1);
2453 offset2 = amodule->code_offsets [table [(pos + 1) * 2]];
2456 if (offset < offset1)
2458 else if (offset >= offset2)
2464 code_start = amodule->code + amodule->code_offsets [table [(pos * 2)]];
2465 if (pos + 1 == fde_count) {
2466 /* The +1 entry in the table contains the length of the last method */
2467 int len = table [(pos + 1) * 2];
2468 code_end = code_start + len;
2470 code_end = amodule->code + amodule->code_offsets [table [(pos + 1) * 2]];
2472 code_len = code_end - code_start;
2474 g_assert (code >= code_start && code < code_end);
2476 if (amodule->thumb_end && (guint8*)code_start < amodule->thumb_end)
2477 /* Clear thumb flag */
2478 code_start = (guint8*)(((mgreg_t)code_start) & ~1);
2480 fde = amodule->mono_eh_frame + table [(pos * 2) + 1];
2481 /* This won't overflow because there is +1 entry in the table */
2482 fde_len = table [(pos * 2) + 2 + 1] - table [(pos * 2) + 1];
2484 mono_unwind_decode_llvm_mono_fde (fde, fde_len, cie, code_start, &info);
2486 ei_len = info.ex_info_len;
2487 type_info = info.type_info;
2488 *this_reg = info.this_reg;
2489 *this_offset = info.this_offset;
2491 /* Count number of nested clauses */
2493 for (i = 0; i < ei_len; ++i) {
2494 /* This might be unaligned */
2495 gint32 cindex1 = read32 (type_info [i]);
2498 for (l = nesting [cindex1]; l; l = l->next) {
2499 gint32 nesting_cindex = GPOINTER_TO_INT (l->data);
2501 for (j = 0; j < ei_len; ++j) {
2502 gint32 cindex2 = read32 (type_info [j]);
2504 if (cindex2 == nesting_cindex)
2511 * LLVM might represent one IL region with multiple regions, so have to
2512 * allocate a new JI.
2515 mono_domain_alloc0_lock_free (domain, mono_jit_info_size (flags, ei_len + nested_len, 0));
2516 mono_jit_info_init (jinfo, method, code, code_len, flags, ei_len + nested_len, 0);
2518 jinfo->unwind_info = mono_cache_unwind_info (info.unw_info, info.unw_info_len);
2519 /* This signals that unwind_info points to a normal cached unwind info */
2520 jinfo->from_aot = 0;
2521 jinfo->from_llvm = 1;
2523 for (i = 0; i < ei_len; ++i) {
2525 * clauses contains the original IL exception info saved by the AOT
2526 * compiler, we have to combine that with the information produced by LLVM
2528 /* The type_info entries contain IL clause indexes */
2529 int clause_index = read32 (type_info [i]);
2530 MonoJitExceptionInfo *jei = &jinfo->clauses [i];
2531 MonoJitExceptionInfo *orig_jei = &clauses [clause_index];
2533 g_assert (clause_index < num_clauses);
2534 jei->flags = orig_jei->flags;
2535 jei->data.catch_class = orig_jei->data.catch_class;
2537 jei->try_start = ei [i].try_start;
2538 jei->try_end = ei [i].try_end;
2539 jei->handler_start = ei [i].handler_start;
2540 jei->clause_index = clause_index;
2542 /* Make sure we transition to thumb when a handler starts */
2543 if (amodule->thumb_end && (guint8*)jei->handler_start < amodule->thumb_end)
2544 jei->handler_start = (void*)((mgreg_t)jei->handler_start + 1);
2547 /* See exception_cb () in mini-llvm.c as to why this is needed */
2549 for (i = 0; i < ei_len; ++i) {
2550 gint32 cindex1 = read32 (type_info [i]);
2553 for (l = nesting [cindex1]; l; l = l->next) {
2554 gint32 nesting_cindex = GPOINTER_TO_INT (l->data);
2556 for (j = 0; j < ei_len; ++j) {
2557 gint32 cindex2 = read32 (type_info [j]);
2559 if (cindex2 == nesting_cindex) {
2560 memcpy (&jinfo->clauses [nindex], &jinfo->clauses [j], sizeof (MonoJitExceptionInfo));
2561 jinfo->clauses [nindex].try_start = jinfo->clauses [i].try_start;
2562 jinfo->clauses [nindex].try_end = jinfo->clauses [i].try_end;
2563 jinfo->clauses [nindex].handler_start = jinfo->clauses [i].handler_start;
2564 jinfo->clauses [nindex].exvar_offset = jinfo->clauses [i].exvar_offset;
2570 g_assert (nindex == ei_len + nested_len);
2576 alloc0_jit_info_data (MonoDomain *domain, int size, gboolean async_context)
2580 if (async_context) {
2581 res = mono_domain_alloc0_lock_free (domain, size);
2582 InterlockedExchangeAdd (&async_jit_info_size, size);
2584 res = mono_domain_alloc0 (domain, size);
2590 * LOCKING: Acquires the domain lock.
2591 * In async context, this is async safe.
2594 decode_exception_debug_info (MonoAotModule *amodule, MonoDomain *domain,
2595 MonoMethod *method, guint8* ex_info, guint8 *addr,
2596 guint8 *code, guint32 code_len)
2598 int i, buf_len, num_clauses, len;
2600 MonoJitInfoFlags flags = JIT_INFO_NONE;
2601 guint unwind_info, eflags;
2602 gboolean has_generic_jit_info, has_dwarf_unwind_info, has_clauses, has_seq_points, has_try_block_holes, has_arch_eh_jit_info;
2603 gboolean from_llvm, has_gc_map;
2605 int try_holes_info_size, num_holes;
2606 int this_reg = 0, this_offset = 0;
2609 /* Load the method info from the AOT file */
2610 async = mono_thread_info_is_async_context ();
2613 eflags = decode_value (p, &p);
2614 has_generic_jit_info = (eflags & 1) != 0;
2615 has_dwarf_unwind_info = (eflags & 2) != 0;
2616 has_clauses = (eflags & 4) != 0;
2617 has_seq_points = (eflags & 8) != 0;
2618 from_llvm = (eflags & 16) != 0;
2619 has_try_block_holes = (eflags & 32) != 0;
2620 has_gc_map = (eflags & 64) != 0;
2621 has_arch_eh_jit_info = (eflags & 128) != 0;
2623 if (has_dwarf_unwind_info) {
2624 unwind_info = decode_value (p, &p);
2625 g_assert (unwind_info < (1 << 30));
2627 unwind_info = decode_value (p, &p);
2629 if (has_generic_jit_info)
2630 flags |= JIT_INFO_HAS_GENERIC_JIT_INFO;
2632 if (has_try_block_holes) {
2633 num_holes = decode_value (p, &p);
2634 flags |= JIT_INFO_HAS_TRY_BLOCK_HOLES;
2635 try_holes_info_size = sizeof (MonoTryBlockHoleTableJitInfo) + num_holes * sizeof (MonoTryBlockHoleJitInfo);
2637 num_holes = try_holes_info_size = 0;
2640 if (has_arch_eh_jit_info) {
2641 flags |= JIT_INFO_HAS_ARCH_EH_INFO;
2642 /* Overwrite the original code_len which includes alignment padding */
2643 code_len = decode_value (p, &p);
2646 /* Exception table */
2648 num_clauses = decode_value (p, &p);
2653 MonoJitExceptionInfo *clauses;
2660 * Part of the info is encoded by the AOT compiler, the rest is in the .eh_frame
2663 clauses = g_new0 (MonoJitExceptionInfo, num_clauses);
2664 nesting = g_new0 (GSList*, num_clauses);
2666 for (i = 0; i < num_clauses; ++i) {
2667 MonoJitExceptionInfo *ei = &clauses [i];
2669 ei->flags = decode_value (p, &p);
2671 if (decode_value (p, &p))
2672 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
2674 /* Read the list of nesting clauses */
2676 int nesting_index = decode_value (p, &p);
2677 if (nesting_index == -1)
2679 nesting [i] = g_slist_prepend (nesting [i], GINT_TO_POINTER (nesting_index));
2683 jinfo = decode_llvm_mono_eh_frame (amodule, domain, method, code, clauses, num_clauses, flags, nesting, &this_reg, &this_offset);
2686 for (i = 0; i < num_clauses; ++i)
2687 g_slist_free (nesting [i]);
2690 len = mono_jit_info_size (flags, num_clauses, num_holes);
2691 jinfo = alloc0_jit_info_data (domain, len, async);
2692 mono_jit_info_init (jinfo, method, code, code_len, flags, num_clauses, num_holes);
2694 for (i = 0; i < jinfo->num_clauses; ++i) {
2695 MonoJitExceptionInfo *ei = &jinfo->clauses [i];
2697 ei->flags = decode_value (p, &p);
2699 ei->exvar_offset = decode_value (p, &p);
2701 if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER || ei->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
2702 ei->data.filter = code + decode_value (p, &p);
2704 int len = decode_value (p, &p);
2710 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
2714 ei->try_start = code + decode_value (p, &p);
2715 ei->try_end = code + decode_value (p, &p);
2716 ei->handler_start = code + decode_value (p, &p);
2719 jinfo->unwind_info = unwind_info;
2720 jinfo->domain_neutral = 0;
2721 jinfo->from_aot = 1;
2724 if (has_try_block_holes) {
2725 MonoTryBlockHoleTableJitInfo *table;
2727 g_assert (jinfo->has_try_block_holes);
2729 table = mono_jit_info_get_try_block_hole_table_info (jinfo);
2732 table->num_holes = (guint16)num_holes;
2733 for (i = 0; i < num_holes; ++i) {
2734 MonoTryBlockHoleJitInfo *hole = &table->holes [i];
2735 hole->clause = decode_value (p, &p);
2736 hole->length = decode_value (p, &p);
2737 hole->offset = decode_value (p, &p);
2741 if (has_arch_eh_jit_info) {
2742 MonoArchEHJitInfo *eh_info;
2744 g_assert (jinfo->has_arch_eh_info);
2746 eh_info = mono_jit_info_get_arch_eh_info (jinfo);
2747 eh_info->stack_size = decode_value (p, &p);
2748 eh_info->epilog_size = decode_value (p, &p);
2752 /* The rest is not needed in async mode */
2753 jinfo->async = TRUE;
2754 jinfo->d.aot_info = amodule;
2759 if (has_generic_jit_info) {
2760 MonoGenericJitInfo *gi;
2763 g_assert (jinfo->has_generic_jit_info);
2765 gi = mono_jit_info_get_generic_jit_info (jinfo);
2768 gi->nlocs = decode_value (p, &p);
2770 gi->locations = alloc0_jit_info_data (domain, gi->nlocs * sizeof (MonoDwarfLocListEntry), async);
2771 for (i = 0; i < gi->nlocs; ++i) {
2772 MonoDwarfLocListEntry *entry = &gi->locations [i];
2774 entry->is_reg = decode_value (p, &p);
2775 entry->reg = decode_value (p, &p);
2777 entry->offset = decode_value (p, &p);
2779 entry->from = decode_value (p, &p);
2780 entry->to = decode_value (p, &p);
2785 gi->has_this = this_reg != -1;
2786 gi->this_reg = this_reg;
2787 gi->this_offset = this_offset;
2789 gi->has_this = decode_value (p, &p);
2790 gi->this_reg = decode_value (p, &p);
2791 gi->this_offset = decode_value (p, &p);
2795 len = decode_value (p, &p);
2799 jinfo->d.method = decode_resolve_method_ref (amodule, p, &p);
2801 gi->generic_sharing_context = g_new0 (MonoGenericSharingContext, 1);
2802 if (decode_value (p, &p)) {
2805 MonoGenericSharingContext *gsctx = gi->generic_sharing_context;
2807 n = decode_value (p, &p);
2809 gsctx->var_is_vt = alloc0_jit_info_data (domain, sizeof (gboolean) * n, async);
2810 for (i = 0; i < n; ++i)
2811 gsctx->var_is_vt [i] = decode_value (p, &p);
2813 n = decode_value (p, &p);
2815 gsctx->mvar_is_vt = alloc0_jit_info_data (domain, sizeof (gboolean) * n, async);
2816 for (i = 0; i < n; ++i)
2817 gsctx->mvar_is_vt [i] = decode_value (p, &p);
2822 if (method && has_seq_points) {
2823 MonoSeqPointInfo *seq_points;
2825 p += seq_point_info_read (&seq_points, p, FALSE);
2827 mono_domain_lock (domain);
2828 g_hash_table_insert (domain_jit_info (domain)->seq_points, method, seq_points);
2829 mono_domain_unlock (domain);
2832 /* Load debug info */
2833 buf_len = decode_value (p, &p);
2835 mono_debug_add_aot_method (domain, method, code, p, buf_len);
2839 int map_size = decode_value (p, &p);
2840 /* The GC map requires 4 bytes of alignment */
2841 while ((guint64)(gsize)p % 4)
2847 if (amodule != jinfo->d.method->klass->image->aot_module) {
2850 ji_to_amodule = g_hash_table_new (NULL, NULL);
2851 g_hash_table_insert (ji_to_amodule, jinfo, amodule);
2859 amodule_contains_code_addr (MonoAotModule *amodule, guint8 *code)
2861 return (code >= amodule->jit_code_start && code <= amodule->jit_code_end) ||
2862 (code >= amodule->llvm_code_start && code <= amodule->llvm_code_end);
2866 * mono_aot_get_unwind_info:
2868 * Return a pointer to the DWARF unwind info belonging to JI.
2871 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
2873 MonoAotModule *amodule;
2875 guint8 *code = ji->code_start;
2878 amodule = ji->d.aot_info;
2880 amodule = jinfo_get_method (ji)->klass->image->aot_module;
2882 g_assert (ji->from_aot);
2884 if (!amodule_contains_code_addr (amodule, code)) {
2885 /* ji belongs to a different aot module than amodule */
2887 g_assert (ji_to_amodule);
2888 amodule = g_hash_table_lookup (ji_to_amodule, ji);
2890 g_assert (amodule_contains_code_addr (amodule, code));
2894 p = amodule->unwind_info + ji->unwind_info;
2895 *unwind_info_len = decode_value (p, &p);
2899 static G_GNUC_UNUSED int
2900 compare_ints (const void *a, const void *b)
2902 return *(gint32*)a - *(gint32*)b;
2906 msort_code_offsets_internal (gint32 *array, int lo, int hi, gint32 *scratch)
2908 int mid = (lo + hi) / 2;
2915 for (i = lo; i < hi; ++i)
2916 if (array [(i * 2)] > array [(i * 2) + 2])
2919 /* Already sorted */
2923 msort_code_offsets_internal (array, lo, mid, scratch);
2924 msort_code_offsets_internal (array, mid + 1, hi, scratch);
2926 if (array [mid * 2] < array [(mid + 1) * 2])
2932 for (i = lo; i <= hi; i ++) {
2933 if (t_lo <= mid && ((t_hi > hi) || array [t_lo * 2] < array [t_hi * 2])) {
2934 scratch [(i * 2)] = array [t_lo * 2];
2935 scratch [(i * 2) + 1] = array [(t_lo *2) + 1];
2938 scratch [(i * 2)] = array [t_hi * 2];
2939 scratch [(i * 2) + 1] = array [(t_hi *2) + 1];
2943 for (i = lo; i <= hi; ++i) {
2944 array [(i * 2)] = scratch [i * 2];
2945 array [(i * 2) + 1] = scratch [(i * 2) + 1];
2950 msort_code_offsets (gint32 *array, int len)
2954 scratch = g_new (gint32, len * 2);
2955 msort_code_offsets_internal (array, 0, len - 1, scratch);
2960 * mono_aot_find_jit_info:
2962 * In async context, the resulting MonoJitInfo will not have its method field set, and it will not be added
2963 * to the jit info tables.
2964 * FIXME: Large sizes in the lock free allocator
2967 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
2969 int pos, left, right, offset, offset1, offset2, code_len;
2970 int method_index, table_len;
2972 MonoAotModule *amodule = image->aot_module;
2973 MonoMethod *method = NULL;
2975 guint8 *code, *ex_info, *p;
2978 gint32 *code_offsets;
2985 nmethods = amodule->info.nmethods;
2987 if (domain != mono_get_root_domain ())
2991 if (!amodule_contains_code_addr (amodule, addr))
2994 async = mono_thread_info_is_async_context ();
2996 offset = (guint8*)addr - amodule->code;
2998 /* Compute a sorted table mapping code offsets to method indexes. */
2999 if (!amodule->sorted_code_offsets) {
3001 code_offsets = g_new0 (gint32, nmethods * 2);
3003 for (i = 0; i < nmethods; ++i) {
3004 /* Skip the -1 entries to speed up sorting */
3005 if (amodule->code_offsets [i] == 0xffffffff)
3007 code_offsets [(offsets_len * 2)] = amodule->code_offsets [i];
3008 code_offsets [(offsets_len *2) + 1] = i;
3011 /* Use a merge sort as this is mostly sorted */
3012 msort_code_offsets (code_offsets, offsets_len);
3013 //qsort (code_offsets, offsets_len, sizeof (gint32) * 2, compare_ints);
3014 for (i = 0; i < offsets_len -1; ++i)
3015 g_assert (code_offsets [(i * 2)] <= code_offsets [(i + 1) * 2]);
3017 amodule->sorted_code_offsets_len = offsets_len;
3018 mono_memory_barrier ();
3019 if (InterlockedCompareExchangePointer ((gpointer*)&amodule->sorted_code_offsets, code_offsets, NULL) != NULL)
3020 /* Somebody got in before us */
3021 g_free (code_offsets);
3024 code_offsets = amodule->sorted_code_offsets;
3025 offsets_len = amodule->sorted_code_offsets_len;
3027 /* Binary search in the sorted_code_offsets table */
3029 right = offsets_len;
3031 pos = (left + right) / 2;
3033 offset1 = code_offsets [(pos * 2)];
3034 if (pos + 1 == offsets_len) {
3035 if (amodule->code + offset1 >= amodule->jit_code_start && amodule->code + offset1 < amodule->jit_code_end)
3036 offset2 = amodule->jit_code_end - amodule->code;
3038 offset2 = amodule->llvm_code_end - amodule->code;
3040 offset2 = code_offsets [(pos + 1) * 2];
3043 if (offset < offset1)
3045 else if (offset >= offset2)
3051 g_assert (offset >= code_offsets [(pos * 2)]);
3052 if (pos + 1 < offsets_len)
3053 g_assert (offset < code_offsets [((pos + 1) * 2)]);
3054 method_index = code_offsets [(pos * 2) + 1];
3056 /* In async mode, jinfo is not added to the normal jit info table, so have to cache it ourselves */
3058 JitInfoMap *table = amodule->async_jit_info_table;
3062 len = table [0].method_index;
3063 for (i = 1; i < len; ++i) {
3064 if (table [i].method_index == method_index)
3065 return table [i].jinfo;
3070 code = &amodule->code [amodule->code_offsets [method_index]];
3071 ex_info = &amodule->blob [mono_aot_get_offset (amodule->ex_info_offsets, method_index)];
3073 if (pos == offsets_len - 1) {
3074 if (code >= amodule->jit_code_start && code < amodule->jit_code_end)
3075 code_len = amodule->jit_code_end - code;
3077 code_len = amodule->llvm_code_end - code;
3079 code_len = code_offsets [(pos + 1) * 2] - code_offsets [pos * 2];
3082 g_assert ((guint8*)code <= (guint8*)addr && (guint8*)addr < (guint8*)code + code_len);
3084 /* Might be a wrapper/extra method */
3086 if (amodule->extra_methods) {
3087 amodule_lock (amodule);
3088 method = g_hash_table_lookup (amodule->extra_methods, GUINT_TO_POINTER (method_index));
3089 amodule_unlock (amodule);
3095 if (method_index >= image->tables [MONO_TABLE_METHOD].rows) {
3097 * This is hit for extra methods which are called directly, so they are
3098 * not in amodule->extra_methods.
3100 table_len = amodule->extra_method_info_offsets [0];
3101 table = amodule->extra_method_info_offsets + 1;
3108 pos = ((left + right) / 2);
3110 g_assert (pos < table_len);
3112 if (table [pos * 2] < method_index)
3114 else if (table [pos * 2] > method_index)
3120 p = amodule->blob + table [(pos * 2) + 1];
3121 method = decode_resolve_method_ref (amodule, p, &p);
3123 /* Happens when a random address is passed in which matches a not-yey called wrapper encoded using its name */
3126 token = mono_metadata_make_token (MONO_TABLE_METHOD, method_index + 1);
3127 method = mono_get_method (image, token, NULL);
3134 //printf ("F: %s\n", mono_method_full_name (method, TRUE));
3136 jinfo = decode_exception_debug_info (amodule, domain, method, ex_info, addr, code, code_len);
3138 g_assert ((guint8*)addr >= (guint8*)jinfo->code_start);
3139 g_assert ((guint8*)addr < (guint8*)jinfo->code_start + jinfo->code_size);
3141 /* Add it to the normal JitInfo tables */
3143 JitInfoMap *old_table, *new_table;
3147 * Use a simple inmutable table with linear search to cache async jit info entries.
3148 * This assumes that the number of entries is small.
3151 /* Copy the table, adding a new entry at the end */
3152 old_table = amodule->async_jit_info_table;
3154 len = old_table[0].method_index;
3157 new_table = alloc0_jit_info_data (domain, (len + 1) * sizeof (JitInfoMap), async);
3159 memcpy (new_table, old_table, len * sizeof (JitInfoMap));
3160 new_table [0].method_index = len + 1;
3161 new_table [len].method_index = method_index;
3162 new_table [len].jinfo = jinfo;
3164 mono_memory_barrier ();
3165 if (InterlockedCompareExchangePointer ((gpointer)&amodule->async_jit_info_table, new_table, old_table) == old_table)
3169 mono_jit_info_table_add (domain, jinfo);
3176 decode_patch (MonoAotModule *aot_module, MonoMemPool *mp, MonoJumpInfo *ji, guint8 *buf, guint8 **endbuf)
3184 case MONO_PATCH_INFO_METHOD:
3185 case MONO_PATCH_INFO_METHOD_JUMP:
3186 case MONO_PATCH_INFO_ICALL_ADDR:
3187 case MONO_PATCH_INFO_METHOD_RGCTX:
3188 case MONO_PATCH_INFO_METHOD_CODE_SLOT: {
3192 res = decode_method_ref (aot_module, &ref, p, &p);
3196 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)) {
3197 ji->data.target = mono_create_ftnptr (mono_domain_get (), mono_create_jit_trampoline_from_token (ref.image, ref.token));
3198 ji->type = MONO_PATCH_INFO_ABS;
3202 ji->data.method = ref.method;
3204 ji->data.method = mono_get_method (ref.image, ref.token, NULL);
3205 g_assert (ji->data.method);
3206 mono_class_init (ji->data.method->klass);
3210 case MONO_PATCH_INFO_INTERNAL_METHOD:
3211 case MONO_PATCH_INFO_JIT_ICALL_ADDR: {
3212 guint32 len = decode_value (p, &p);
3214 ji->data.name = (char*)p;
3218 case MONO_PATCH_INFO_METHODCONST:
3220 ji->data.method = decode_resolve_method_ref (aot_module, p, &p);
3221 if (!ji->data.method)
3224 case MONO_PATCH_INFO_VTABLE:
3225 case MONO_PATCH_INFO_CLASS:
3226 case MONO_PATCH_INFO_IID:
3227 case MONO_PATCH_INFO_ADJUSTED_IID:
3228 case MONO_PATCH_INFO_CLASS_INIT:
3230 ji->data.klass = decode_klass_ref (aot_module, p, &p);
3231 if (!ji->data.klass)
3234 case MONO_PATCH_INFO_DELEGATE_TRAMPOLINE:
3235 ji->data.del_tramp = mono_mempool_alloc0 (mp, sizeof (MonoDelegateClassMethodPair));
3236 ji->data.del_tramp->klass = decode_klass_ref (aot_module, p, &p);
3237 if (!ji->data.del_tramp->klass)
3239 if (decode_value (p, &p)) {
3240 ji->data.del_tramp->method = decode_resolve_method_ref (aot_module, p, &p);
3241 if (!ji->data.del_tramp->method)
3244 ji->data.del_tramp->virtual = decode_value (p, &p) ? TRUE : FALSE;
3246 case MONO_PATCH_INFO_IMAGE:
3247 ji->data.image = load_image (aot_module, decode_value (p, &p), TRUE);
3248 if (!ji->data.image)
3251 case MONO_PATCH_INFO_FIELD:
3252 case MONO_PATCH_INFO_SFLDA:
3254 ji->data.field = decode_field_info (aot_module, p, &p);
3255 if (!ji->data.field)
3258 case MONO_PATCH_INFO_SWITCH:
3259 ji->data.table = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoBBTable));
3260 ji->data.table->table_size = decode_value (p, &p);
3261 table = mono_domain_alloc (mono_domain_get (), sizeof (gpointer) * ji->data.table->table_size);
3262 ji->data.table->table = (MonoBasicBlock**)table;
3263 for (i = 0; i < ji->data.table->table_size; i++)
3264 table [i] = (gpointer)(gssize)decode_value (p, &p);
3266 case MONO_PATCH_INFO_R4: {
3269 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (float));
3270 val = decode_value (p, &p);
3271 *(float*)ji->data.target = *(float*)&val;
3274 case MONO_PATCH_INFO_R8: {
3278 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (double));
3280 val [0] = decode_value (p, &p);
3281 val [1] = decode_value (p, &p);
3282 v = ((guint64)val [1] << 32) | ((guint64)val [0]);
3283 *(double*)ji->data.target = *(double*)&v;
3286 case MONO_PATCH_INFO_LDSTR:
3287 image = load_image (aot_module, decode_value (p, &p), TRUE);
3290 ji->data.token = mono_jump_info_token_new (mp, image, MONO_TOKEN_STRING + decode_value (p, &p));
3292 case MONO_PATCH_INFO_RVA:
3293 case MONO_PATCH_INFO_DECLSEC:
3294 case MONO_PATCH_INFO_LDTOKEN:
3295 case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
3297 image = load_image (aot_module, decode_value (p, &p), TRUE);
3300 ji->data.token = mono_jump_info_token_new (mp, image, decode_value (p, &p));
3302 ji->data.token->has_context = decode_value (p, &p);
3303 if (ji->data.token->has_context) {
3304 gboolean res = decode_generic_context (aot_module, &ji->data.token->context, p, &p);
3309 case MONO_PATCH_INFO_EXC_NAME:
3310 ji->data.klass = decode_klass_ref (aot_module, p, &p);
3311 if (!ji->data.klass)
3313 ji->data.name = ji->data.klass->name;
3315 case MONO_PATCH_INFO_METHOD_REL:
3316 ji->data.offset = decode_value (p, &p);
3318 case MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG:
3319 case MONO_PATCH_INFO_GENERIC_CLASS_INIT:
3320 case MONO_PATCH_INFO_MONITOR_ENTER:
3321 case MONO_PATCH_INFO_MONITOR_ENTER_V4:
3322 case MONO_PATCH_INFO_MONITOR_EXIT:
3323 case MONO_PATCH_INFO_GC_CARD_TABLE_ADDR:
3324 case MONO_PATCH_INFO_GC_NURSERY_START:
3325 case MONO_PATCH_INFO_JIT_TLS_ID:
3327 case MONO_PATCH_INFO_CASTCLASS_CACHE:
3328 ji->data.index = decode_value (p, &p);
3330 case MONO_PATCH_INFO_RGCTX_FETCH: {
3332 MonoJumpInfoRgctxEntry *entry;
3333 guint32 offset, val;
3336 offset = decode_value (p, &p);
3337 val = decode_value (p, &p);
3339 entry = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
3340 p2 = aot_module->blob + offset;
3341 entry->method = decode_resolve_method_ref (aot_module, p2, &p2);
3342 entry->in_mrgctx = ((val & 1) > 0) ? TRUE : FALSE;
3343 entry->info_type = (val >> 1) & 0xff;
3344 entry->data = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
3345 entry->data->type = (val >> 9) & 0xff;
3347 res = decode_patch (aot_module, mp, entry->data, p, &p);
3350 ji->data.rgctx_entry = entry;
3353 case MONO_PATCH_INFO_SEQ_POINT_INFO:
3355 case MONO_PATCH_INFO_LLVM_IMT_TRAMPOLINE: {
3356 MonoJumpInfoImtTramp *imt_tramp = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoImtTramp));
3358 imt_tramp->method = decode_resolve_method_ref (aot_module, p, &p);
3359 imt_tramp->vt_offset = decode_value (p, &p);
3361 ji->data.imt_tramp = imt_tramp;
3364 case MONO_PATCH_INFO_SIGNATURE:
3365 ji->data.target = decode_signature (aot_module, p, &p);
3367 case MONO_PATCH_INFO_TLS_OFFSET:
3368 ji->data.target = GINT_TO_POINTER (decode_value (p, &p));
3370 case MONO_PATCH_INFO_GSHAREDVT_CALL: {
3371 MonoJumpInfoGSharedVtCall *info = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoGSharedVtCall));
3372 info->sig = decode_signature (aot_module, p, &p);
3373 g_assert (info->sig);
3374 info->method = decode_resolve_method_ref (aot_module, p, &p);
3375 g_assert (info->method);
3377 ji->data.target = info;
3380 case MONO_PATCH_INFO_GSHAREDVT_METHOD: {
3381 MonoGSharedVtMethodInfo *info = mono_mempool_alloc0 (mp, sizeof (MonoGSharedVtMethodInfo));
3384 info->method = decode_resolve_method_ref (aot_module, p, &p);
3385 g_assert (info->method);
3386 info->num_entries = decode_value (p, &p);
3387 info->count_entries = info->num_entries;
3388 info->entries = mono_mempool_alloc0 (mp, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->num_entries);
3389 for (i = 0; i < info->num_entries; ++i) {
3390 MonoRuntimeGenericContextInfoTemplate *template = &info->entries [i];
3392 template->info_type = decode_value (p, &p);
3393 switch (mini_rgctx_info_type_to_patch_info_type (template->info_type)) {
3394 case MONO_PATCH_INFO_CLASS: {
3395 MonoClass *klass = decode_klass_ref (aot_module, p, &p);
3398 template->data = &klass->byval_arg;
3401 case MONO_PATCH_INFO_FIELD:
3402 template->data = decode_field_info (aot_module, p, &p);
3403 if (!template->data)
3407 g_assert_not_reached ();
3411 ji->data.target = info;
3414 case MONO_PATCH_INFO_LDSTR_LIT: {
3415 int len = decode_value (p, &p);
3418 s = mono_mempool_alloc0 (mp, len + 1);
3419 memcpy (s, p, len + 1);
3422 ji->data.target = s;
3426 g_warning ("unhandled type %d", ji->type);
3427 g_assert_not_reached ();
3438 static MonoJumpInfo*
3439 load_patch_info (MonoAotModule *aot_module, MonoMemPool *mp, int n_patches,
3440 gboolean llvm, guint32 **got_slots,
3441 guint8 *buf, guint8 **endbuf)
3443 MonoJumpInfo *patches;
3447 guint32 *got_offsets;
3452 got = aot_module->llvm_got;
3453 got_offsets = aot_module->info.llvm_got_info_offsets;
3455 got = aot_module->got;
3456 got_offsets = aot_module->info.got_info_offsets;
3459 patches = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo) * n_patches);
3461 *got_slots = g_malloc (sizeof (guint32) * n_patches);
3463 for (pindex = 0; pindex < n_patches; ++pindex) {
3464 MonoJumpInfo *ji = &patches [pindex];
3469 got_offset = decode_value (p, &p);
3471 shared_p = aot_module->blob + mono_aot_get_offset (got_offsets, got_offset);
3473 ji->type = decode_value (shared_p, &shared_p);
3475 /* See load_method () for SFLDA */
3476 if (got [got_offset] && ji->type != MONO_PATCH_INFO_SFLDA) {
3477 /* Already loaded */
3479 res = decode_patch (aot_module, mp, ji, shared_p, &shared_p);
3484 (*got_slots) [pindex] = got_offset;
3491 g_free (*got_slots);
3498 register_jump_target_got_slot (MonoDomain *domain, MonoMethod *method, gpointer *got_slot)
3501 * Jump addresses cannot be patched by the trampoline code since it
3502 * does not have access to the caller's address. Instead, we collect
3503 * the addresses of the GOT slots pointing to a method, and patch
3504 * them after the method has been compiled.
3506 MonoJitDomainInfo *info = domain_jit_info (domain);
3509 mono_domain_lock (domain);
3510 if (!info->jump_target_got_slot_hash)
3511 info->jump_target_got_slot_hash = g_hash_table_new (NULL, NULL);
3512 list = g_hash_table_lookup (info->jump_target_got_slot_hash, method);
3513 list = g_slist_prepend (list, got_slot);
3514 g_hash_table_insert (info->jump_target_got_slot_hash, method, list);
3515 mono_domain_unlock (domain);
3521 * Load the method identified by METHOD_INDEX from the AOT image. Return a
3522 * pointer to the native code of the method, or NULL if not found.
3523 * METHOD might not be set if the caller only has the image/token info.
3526 load_method (MonoDomain *domain, MonoAotModule *amodule, MonoImage *image, MonoMethod *method, guint32 token, int method_index)
3529 gboolean from_plt = method == NULL;
3531 int i, pindex, n_patches, used_strings;
3532 gboolean keep_patches = TRUE;
3534 MonoJitInfo *jinfo = NULL;
3535 guint8 *code, *info;
3537 if (mono_profiler_get_events () & MONO_PROFILE_ENTER_LEAVE) {
3539 /* The caller cannot handle this */
3540 g_assert_not_reached ();
3544 if ((domain != mono_get_root_domain ()) && (!(amodule->info.opts & MONO_OPT_SHARED)))
3545 /* Non shared AOT code can't be used in other appdomains */
3548 if (amodule->out_of_date)
3551 if (amodule->code_offsets [method_index] == 0xffffffff) {
3552 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
3556 method = mono_get_method (image, token, NULL);
3557 full_name = mono_method_full_name (method, TRUE);
3558 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT: NOT FOUND: %s.", full_name);
3564 code = &amodule->code [amodule->code_offsets [method_index]];
3566 info = &amodule->blob [mono_aot_get_offset (amodule->method_info_offsets, method_index)];
3568 if (!amodule->methods_loaded) {
3569 amodule_lock (amodule);
3570 if (!amodule->methods_loaded) {
3573 loaded = g_new0 (guint32, amodule->info.nmethods / 32 + 1);
3574 mono_memory_barrier ();
3575 amodule->methods_loaded = loaded;
3577 amodule_unlock (amodule);
3580 if ((amodule->methods_loaded [method_index / 32] >> (method_index % 32)) & 0x1)
3583 if (mono_last_aot_method != -1) {
3584 if (mono_jit_stats.methods_aot >= mono_last_aot_method)
3586 else if (mono_jit_stats.methods_aot == mono_last_aot_method - 1) {
3588 method = mono_get_method (image, token, NULL);
3590 char *name = mono_method_full_name (method, TRUE);
3591 g_print ("LAST AOT METHOD: %s.\n", name);
3594 g_print ("LAST AOT METHOD: %p %d\n", code, method_index);
3602 klass = method->klass;
3603 decode_klass_ref (amodule, p, &p);
3605 klass = decode_klass_ref (amodule, p, &p);
3608 if (amodule->info.opts & MONO_OPT_SHARED)
3609 used_strings = decode_value (p, &p);
3613 for (i = 0; i < used_strings; i++) {
3614 guint token = decode_value (p, &p);
3615 mono_ldstr (mono_get_root_domain (), image, mono_metadata_token_index (token));
3618 if (amodule->info.opts & MONO_OPT_SHARED)
3619 keep_patches = FALSE;
3621 n_patches = decode_value (p, &p);
3623 keep_patches = FALSE;
3626 MonoJumpInfo *patches;
3634 mp = mono_mempool_new ();
3636 if ((gpointer)code >= amodule->info.jit_code_start && (gpointer)code <= amodule->info.jit_code_end) {
3641 got = amodule->llvm_got;
3645 patches = load_patch_info (amodule, mp, n_patches, llvm, &got_slots, p, &p);
3646 if (patches == NULL)
3649 for (pindex = 0; pindex < n_patches; ++pindex) {
3650 MonoJumpInfo *ji = &patches [pindex];
3654 * For SFLDA, we need to call resolve_patch_target () since the GOT slot could have
3655 * been initialized by load_method () for a static cctor before the cctor has
3656 * finished executing (#23242).
3658 if (!got [got_slots [pindex]] || ji->type == MONO_PATCH_INFO_SFLDA) {
3659 addr = mono_resolve_patch_target (method, domain, code, ji, TRUE);
3660 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
3661 addr = mono_create_ftnptr (domain, addr);
3662 mono_memory_barrier ();
3663 got [got_slots [pindex]] = addr;
3664 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
3665 register_jump_target_got_slot (domain, ji->data.method, &(got [got_slots [pindex]]));
3667 ji->type = MONO_PATCH_INFO_NONE;
3673 mono_mempool_destroy (mp);
3676 if (mini_get_debug_options ()->load_aot_jit_info_eagerly)
3677 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
3679 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
3683 method = mono_get_method (image, token, NULL);
3685 full_name = mono_method_full_name (method, TRUE);
3688 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
3690 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT: FOUND method %s [%p - %p %p]", full_name, code, code + jinfo->code_size, info);
3694 amodule_lock (amodule);
3696 InterlockedIncrement (&mono_jit_stats.methods_aot);
3698 amodule->methods_loaded [method_index / 32] |= 1 << (method_index % 32);
3702 if (method && method->wrapper_type)
3703 g_hash_table_insert (amodule->method_to_code, method, code);
3705 amodule_unlock (amodule);
3707 if (mono_profiler_get_events () & MONO_PROFILE_JIT_COMPILATION) {
3711 method = mono_get_method (image, token, NULL);
3714 mono_profiler_method_jit (method);
3715 jinfo = mono_jit_info_table_find (domain, (char*)code);
3717 mono_profiler_method_end_jit (method, jinfo, MONO_PROFILE_OK);
3720 if (from_plt && klass && !klass->generic_container)
3721 mono_runtime_class_init (mono_class_vtable (domain, klass));
3726 /* FIXME: The space in domain->mp is wasted */
3727 if (amodule->info.opts & MONO_OPT_SHARED)
3728 /* No need to cache patches */
3729 mono_mempool_destroy (mp);
3738 find_aot_method_in_amodule (MonoAotModule *amodule, MonoMethod *method)
3740 guint32 table_size, entry_size, hash;
3741 guint32 *table, *entry;
3743 static guint32 n_extra_decodes;
3745 if (!amodule || amodule->out_of_date)
3748 table_size = amodule->extra_method_table [0];
3749 table = amodule->extra_method_table + 1;
3752 hash = mono_aot_method_hash (method) % table_size;
3754 entry = &table [hash * entry_size];
3761 guint32 key = entry [0];
3762 guint32 value = entry [1];
3763 guint32 next = entry [entry_size - 1];
3767 p = amodule->blob + key;
3770 amodule_lock (amodule);
3771 if (!amodule->method_ref_to_method)
3772 amodule->method_ref_to_method = g_hash_table_new (NULL, NULL);
3773 m = g_hash_table_lookup (amodule->method_ref_to_method, p);
3774 amodule_unlock (amodule);
3776 m = decode_resolve_method_ref_with_target (amodule, method, p, &p);
3778 amodule_lock (amodule);
3779 g_hash_table_insert (amodule->method_ref_to_method, orig_p, m);
3780 amodule_unlock (amodule);
3788 /* Special case: wrappers of shared generic methods */
3789 if (m && method->wrapper_type && m->wrapper_type == m->wrapper_type &&
3790 method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
3791 MonoMethod *w1 = mono_marshal_method_from_wrapper (method);
3792 MonoMethod *w2 = mono_marshal_method_from_wrapper (m);
3794 if (w1->is_inflated && ((MonoMethodInflated *)w1)->declaring == w2) {
3800 /* Methods decoded needlessly */
3802 //printf ("%d %s %s %p\n", n_extra_decodes, mono_method_full_name (method, TRUE), mono_method_full_name (m, TRUE), orig_p);
3807 entry = &table [next * entry_size];
3816 add_module_cb (gpointer key, gpointer value, gpointer user_data)
3818 g_ptr_array_add ((GPtrArray*)user_data, value);
3824 * Try finding METHOD in the extra_method table in all AOT images.
3825 * Return its method index, or 0xffffff if not found. Set OUT_AMODULE to the AOT
3826 * module where the method was found.
3829 find_aot_method (MonoMethod *method, MonoAotModule **out_amodule)
3835 /* Try the method's module first */
3836 *out_amodule = method->klass->image->aot_module;
3837 index = find_aot_method_in_amodule (method->klass->image->aot_module, method);
3838 if (index != 0xffffff)
3842 * Try all other modules.
3843 * This is needed because generic instances klass->image points to the image
3844 * containing the generic definition, but the native code is generated to the
3845 * AOT image which contains the reference.
3848 /* Make a copy to avoid doing the search inside the aot lock */
3849 modules = g_ptr_array_new ();
3851 g_hash_table_foreach (aot_modules, add_module_cb, modules);
3855 for (i = 0; i < modules->len; ++i) {
3856 MonoAotModule *amodule = g_ptr_array_index (modules, i);
3858 if (amodule != method->klass->image->aot_module)
3859 index = find_aot_method_in_amodule (amodule, method);
3860 if (index != 0xffffff) {
3861 *out_amodule = amodule;
3866 g_ptr_array_free (modules, TRUE);
3872 mono_aot_find_method_index (MonoMethod *method)
3874 MonoAotModule *out_amodule;
3875 return find_aot_method (method, &out_amodule);
3879 * mono_aot_get_method:
3881 * Return a pointer to the AOTed native code for METHOD if it can be found,
3883 * On platforms with function pointers, this doesn't return a function pointer.
3886 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
3888 MonoClass *klass = method->klass;
3889 guint32 method_index;
3890 MonoAotModule *amodule = klass->image->aot_module;
3893 if (enable_aot_cache && !amodule && domain->entry_assembly && klass->image == mono_defaults.corlib) {
3894 /* This cannot be AOTed during startup, so do it now */
3895 if (!mscorlib_aot_loaded) {
3896 mscorlib_aot_loaded = TRUE;
3897 load_aot_module (klass->image->assembly, NULL);
3898 amodule = klass->image->aot_module;
3905 if (amodule->out_of_date)
3908 if ((method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
3909 (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
3910 (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
3911 (method->flags & METHOD_ATTRIBUTE_ABSTRACT))
3915 * Use the original method instead of its invoke-with-check wrapper.
3916 * This is not a problem when using full-aot, since it doesn't support
3919 if (mono_aot_only && method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)
3920 return mono_aot_get_method (domain, mono_marshal_method_from_wrapper (method));
3922 g_assert (klass->inited);
3924 /* Find method index */
3925 method_index = 0xffffff;
3926 if (method->is_inflated && !method->wrapper_type && mono_method_is_generic_sharable_full (method, FALSE, FALSE, FALSE)) {
3928 * For generic methods, we store the fully shared instance in place of the
3931 method = mono_method_get_declaring_generic_method (method);
3932 method_index = mono_metadata_token_index (method->token) - 1;
3933 } else if (method->is_inflated || !method->token) {
3934 /* This hash table is used to avoid the slower search in the extra_method_table in the AOT image */
3935 amodule_lock (amodule);
3936 code = g_hash_table_lookup (amodule->method_to_code, method);
3937 amodule_unlock (amodule);
3941 method_index = find_aot_method (method, &amodule);
3943 * Special case the ICollection<T> wrappers for arrays, as they cannot
3944 * be statically enumerated, and each wrapper ends up calling the same
3947 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED && method->klass->rank && strstr (method->name, "System.Collections.Generic")) {
3948 MonoMethod *m = mono_aot_get_array_helper_from_wrapper (method);
3950 code = mono_aot_get_method (domain, m);
3956 * Special case Array.GetGenericValueImpl which is a generic icall.
3957 * Generic sharing currently can't handle it, but the icall returns data using
3958 * an out parameter, so the managed-to-native wrappers can share the same code.
3960 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass == mono_defaults.array_class && !strcmp (method->name, "GetGenericValueImpl")) {
3963 MonoGenericContext ctx;
3964 MonoType *args [16];
3966 if (mono_method_signature (method)->params [1]->type == MONO_TYPE_OBJECT)
3967 /* Avoid recursion */
3970 m = mono_class_get_method_from_name (mono_defaults.array_class, "GetGenericValueImpl", 2);
3973 memset (&ctx, 0, sizeof (ctx));
3974 args [0] = &mono_defaults.object_class->byval_arg;
3975 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
3977 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method_checked (m, &ctx, &error), TRUE, TRUE);
3978 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
3981 * Get the code for the <object> instantiation which should be emitted into
3982 * the mscorlib aot image by the AOT compiler.
3984 code = mono_aot_get_method (domain, m);
3989 /* Same for CompareExchange<T> and Exchange<T> */
3990 /* Same for Volatile.Read<T>/Write<T> */
3991 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass->image == mono_defaults.corlib &&
3992 ((!strcmp (method->klass->name_space, "System.Threading") && !strcmp (method->klass->name, "Interlocked") && (!strcmp (method->name, "CompareExchange") || !strcmp (method->name, "Exchange")) && MONO_TYPE_IS_REFERENCE (mono_method_signature (method)->params [1])) ||
3993 (!strcmp (method->klass->name_space, "System.Threading") && !strcmp (method->klass->name, "Volatile") && (!strcmp (method->name, "Read") && MONO_TYPE_IS_REFERENCE (mono_method_signature (method)->ret))) ||
3994 (!strcmp (method->klass->name_space, "System.Threading") && !strcmp (method->klass->name, "Volatile") && (!strcmp (method->name, "Write") && MONO_TYPE_IS_REFERENCE (mono_method_signature (method)->params [1]))))) {
3997 MonoGenericContext ctx;
3998 MonoType *args [16];
3999 gpointer iter = NULL;
4001 while ((m = mono_class_get_methods (method->klass, &iter))) {
4002 if (mono_method_signature (m)->generic_param_count && !strcmp (m->name, method->name))
4007 memset (&ctx, 0, sizeof (ctx));
4008 args [0] = &mono_defaults.object_class->byval_arg;
4009 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
4011 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method_checked (m, &ctx, &error), TRUE, TRUE);
4012 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
4014 /* Avoid recursion */
4019 * Get the code for the <object> instantiation which should be emitted into
4020 * the mscorlib aot image by the AOT compiler.
4022 code = mono_aot_get_method (domain, m);
4027 if (method_index == 0xffffff && method->is_inflated && mono_method_is_generic_sharable_full (method, FALSE, TRUE, FALSE)) {
4028 /* Partial sharing */
4031 shared = mini_get_shared_method (method);
4032 method_index = find_aot_method (shared, &amodule);
4033 if (method_index != 0xffffff)
4037 if (method_index == 0xffffff && method->is_inflated && mono_method_is_generic_sharable_full (method, FALSE, FALSE, TRUE)) {
4039 /* Use the all-vt shared method since this is what was AOTed */
4040 method_index = find_aot_method (mini_get_shared_method_full (method, TRUE, TRUE), &amodule);
4041 if (method_index != 0xffffff)
4042 method = mini_get_shared_method_full (method, TRUE, FALSE);
4045 if (method_index == 0xffffff) {
4046 if (mono_aot_only && mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
4049 full_name = mono_method_full_name (method, TRUE);
4050 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.", full_name);
4056 if (method_index == 0xffffff)
4059 /* Needed by find_jit_info */
4060 amodule_lock (amodule);
4061 if (!amodule->extra_methods)
4062 amodule->extra_methods = g_hash_table_new (NULL, NULL);
4063 g_hash_table_insert (amodule->extra_methods, GUINT_TO_POINTER (method_index), method);
4064 amodule_unlock (amodule);
4067 method_index = mono_metadata_token_index (method->token) - 1;
4070 return load_method (domain, amodule, klass->image, method, method->token, method_index);
4074 * Same as mono_aot_get_method, but we try to avoid loading any metadata from the
4078 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
4080 MonoAotModule *aot_module = image->aot_module;
4086 method_index = mono_metadata_token_index (token) - 1;
4088 return load_method (domain, aot_module, image, NULL, token, method_index);
4094 } IsGotEntryUserData;
4097 check_is_got_entry (gpointer key, gpointer value, gpointer user_data)
4099 IsGotEntryUserData *data = (IsGotEntryUserData*)user_data;
4100 MonoAotModule *aot_module = (MonoAotModule*)value;
4102 if (aot_module->got && (data->addr >= (guint8*)(aot_module->got)) && (data->addr < (guint8*)(aot_module->got + aot_module->info.got_size)))
4107 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
4109 IsGotEntryUserData user_data;
4114 user_data.addr = addr;
4115 user_data.res = FALSE;
4117 g_hash_table_foreach (aot_modules, check_is_got_entry, &user_data);
4120 return user_data.res;
4125 MonoAotModule *module;
4126 } FindAotModuleUserData;
4129 find_aot_module_cb (gpointer key, gpointer value, gpointer user_data)
4131 FindAotModuleUserData *data = (FindAotModuleUserData*)user_data;
4132 MonoAotModule *aot_module = (MonoAotModule*)value;
4134 if (amodule_contains_code_addr (aot_module, data->addr))
4135 data->module = aot_module;
4138 static inline MonoAotModule*
4139 find_aot_module (guint8 *code)
4141 FindAotModuleUserData user_data;
4146 /* Reading these need no locking */
4147 if (((gsize)code < aot_code_low_addr) || ((gsize)code > aot_code_high_addr))
4150 user_data.addr = code;
4151 user_data.module = NULL;
4154 g_hash_table_foreach (aot_modules, find_aot_module_cb, &user_data);
4157 return user_data.module;
4161 mono_aot_patch_plt_entry (guint8 *code, guint8 *plt_entry, gpointer *got, mgreg_t *regs, guint8 *addr)
4163 MonoAotModule *amodule;
4166 * Since AOT code is only used in the root domain,
4167 * mono_domain_get () != mono_get_root_domain () means the calling method
4168 * is AppDomain:InvokeInDomain, so this is the same check as in
4169 * mono_method_same_domain () but without loading the metadata for the method.
4171 if (mono_domain_get () == mono_get_root_domain ()) {
4173 amodule = find_aot_module (code);
4177 mono_arch_patch_plt_entry (plt_entry, got, regs, addr);
4182 * mono_aot_plt_resolve:
4184 * This function is called by the entries in the PLT to resolve the actual method that
4185 * needs to be called. It returns a trampoline to the method and patches the PLT entry.
4186 * Returns NULL if the something cannot be loaded.
4189 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
4191 #ifdef MONO_ARCH_AOT_SUPPORTED
4192 guint8 *p, *target, *plt_entry;
4194 MonoAotModule *module = (MonoAotModule*)aot_module;
4195 gboolean res, no_ftnptr = FALSE;
4197 gboolean using_gsharedvt = FALSE;
4199 //printf ("DYN: %p %d\n", aot_module, plt_info_offset);
4201 p = &module->blob [plt_info_offset];
4203 ji.type = decode_value (p, &p);
4205 mp = mono_mempool_new_size (512);
4206 res = decode_patch (module, mp, &ji, p, &p);
4209 mono_mempool_destroy (mp);
4213 #ifdef MONO_ARCH_GSHAREDVT_SUPPORTED
4214 using_gsharedvt = TRUE;
4218 * Avoid calling resolve_patch_target in the full-aot case if possible, since
4219 * it would create a trampoline, and we don't need that.
4220 * We could do this only if the method does not need the special handling
4221 * in mono_magic_trampoline ().
4223 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) &&
4224 !mono_method_needs_static_rgctx_invoke (ji.data.method, FALSE) && !using_gsharedvt) {
4225 target = mono_jit_compile_method (ji.data.method);
4228 target = mono_resolve_patch_target (NULL, mono_domain_get (), NULL, &ji, TRUE);
4232 * The trampoline expects us to return a function descriptor on platforms which use
4233 * it, but resolve_patch_target returns a direct function pointer for some type of
4234 * patches, so have to translate between the two.
4235 * FIXME: Clean this up, but how ?
4237 if (ji.type == MONO_PATCH_INFO_ABS || ji.type == MONO_PATCH_INFO_INTERNAL_METHOD || ji.type == MONO_PATCH_INFO_CLASS_INIT || ji.type == MONO_PATCH_INFO_ICALL_ADDR || ji.type == MONO_PATCH_INFO_JIT_ICALL_ADDR || ji.type == MONO_PATCH_INFO_RGCTX_FETCH) {
4238 /* These should already have a function descriptor */
4239 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
4240 /* Our function descriptors have a 0 environment, gcc created ones don't */
4241 if (ji.type != MONO_PATCH_INFO_INTERNAL_METHOD && ji.type != MONO_PATCH_INFO_JIT_ICALL_ADDR && ji.type != MONO_PATCH_INFO_ICALL_ADDR)
4242 g_assert (((gpointer*)target) [2] == 0);
4245 } else if (!no_ftnptr) {
4246 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
4247 g_assert (((gpointer*)target) [2] != 0);
4249 target = mono_create_ftnptr (mono_domain_get (), target);
4252 mono_mempool_destroy (mp);
4254 /* Patch the PLT entry with target which might be the actual method not a trampoline */
4255 plt_entry = mono_aot_get_plt_entry (code);
4256 g_assert (plt_entry);
4257 mono_aot_patch_plt_entry (code, plt_entry, module->got, NULL, target);
4261 g_assert_not_reached ();
4269 * Initialize the PLT table of the AOT module. Called lazily when the first AOT
4270 * method in the module is loaded to avoid committing memory by writing to it.
4271 * LOCKING: Assumes the AMODULE lock is held.
4274 init_plt (MonoAotModule *amodule)
4279 if (amodule->plt_inited)
4282 tramp = mono_create_specific_trampoline (amodule, MONO_TRAMPOLINE_AOT_PLT, mono_get_root_domain (), NULL);
4285 * Initialize the PLT entries in the GOT to point to the default targets.
4288 tramp = mono_create_ftnptr (mono_domain_get (), tramp);
4289 for (i = 1; i < amodule->info.plt_size; ++i)
4290 /* All the default entries point to the AOT trampoline */
4291 ((gpointer*)amodule->got)[amodule->info.plt_got_offset_base + i] = tramp;
4293 amodule->plt_inited = TRUE;
4297 * mono_aot_get_plt_entry:
4299 * Return the address of the PLT entry called by the code at CODE if exists.
4302 mono_aot_get_plt_entry (guint8 *code)
4304 MonoAotModule *amodule = find_aot_module (code);
4305 guint8 *target = NULL;
4311 if (amodule->thumb_end) {
4312 if (code >= amodule->llvm_code_start && code < amodule->llvm_code_end)
4313 return mono_arm_get_thumb_plt_entry (code);
4317 #ifdef MONO_ARCH_AOT_SUPPORTED
4318 target = mono_arch_get_call_target (code);
4320 g_assert_not_reached ();
4324 while (target != NULL) {
4325 if ((target >= (guint8*)(amodule->plt)) && (target < (guint8*)(amodule->plt_end)))
4328 // Add 4 since mono_arch_get_call_target assumes we're passing
4329 // the instruction after the actual branch instruction.
4330 target = mono_arch_get_call_target (target + 4);
4335 if ((target >= (guint8*)(amodule->plt)) && (target < (guint8*)(amodule->plt_end)))
4343 * mono_aot_get_plt_info_offset:
4345 * Return the PLT info offset belonging to the plt entry called by CODE.
4348 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
4350 guint8 *plt_entry = mono_aot_get_plt_entry (code);
4352 g_assert (plt_entry);
4354 /* The offset is embedded inside the code after the plt entry */
4355 #ifdef MONO_ARCH_AOT_SUPPORTED
4356 return mono_arch_get_plt_info_offset (plt_entry, regs, code);
4358 g_assert_not_reached ();
4364 mono_create_ftnptr_malloc (guint8 *code)
4366 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
4367 MonoPPCFunctionDescriptor *ftnptr = g_malloc0 (sizeof (MonoPPCFunctionDescriptor));
4369 ftnptr->code = code;
4380 * mono_aot_register_jit_icall:
4382 * Register a JIT icall which is called by trampolines in full-aot mode. This should
4383 * be called from mono_arch_init () during startup.
4386 mono_aot_register_jit_icall (const char *name, gpointer addr)
4388 /* No need for locking */
4389 if (!aot_jit_icall_hash)
4390 aot_jit_icall_hash = g_hash_table_new (g_str_hash, g_str_equal);
4391 g_hash_table_insert (aot_jit_icall_hash, (char*)name, addr);
4395 * load_function_full:
4397 * Load the function named NAME from the aot image.
4400 load_function_full (MonoAotModule *amodule, const char *name, MonoTrampInfo **out_tinfo)
4404 int n_patches, pindex;
4407 guint32 info_offset;
4411 symbol = g_strdup_printf ("%s", name);
4412 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&code);
4415 g_error ("Symbol '%s' not found in AOT file '%s'.\n", name, amodule->aot_name);
4417 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT: FOUND function '%s' in AOT file '%s'.", name, amodule->aot_name);
4421 symbol = g_strdup_printf ("%s_p", name);
4422 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&p);
4425 /* Nothing to patch */
4428 info_offset = *(guint32*)p;
4430 MonoTrampInfo *tinfo;
4431 guint32 code_size, uw_info_len, uw_offset;
4433 /* Construct a MonoTrampInfo from the data in the AOT image */
4435 p += sizeof (guint32);
4436 code_size = *(guint32*)p;
4437 p += sizeof (guint32);
4438 uw_offset = *(guint32*)p;
4439 uw_info = amodule->unwind_info + uw_offset;
4440 uw_info_len = decode_value (uw_info, &uw_info);
4442 tinfo = g_new0 (MonoTrampInfo, 1);
4444 tinfo->code_size = code_size;
4445 tinfo->uw_info = uw_info;
4446 tinfo->uw_info_len = uw_info_len;
4451 p = amodule->blob + info_offset;
4453 /* Similar to mono_aot_load_method () */
4455 n_patches = decode_value (p, &p);
4458 MonoJumpInfo *patches;
4461 mp = mono_mempool_new ();
4463 patches = load_patch_info (amodule, mp, n_patches, FALSE, &got_slots, p, &p);
4466 for (pindex = 0; pindex < n_patches; ++pindex) {
4467 MonoJumpInfo *ji = &patches [pindex];
4470 if (amodule->got [got_slots [pindex]])
4474 * When this code is executed, the runtime may not be initalized yet, so
4475 * resolve the patch info by hand.
4477 if (ji->type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
4478 if (!strcmp (ji->data.name, "mono_get_lmf_addr")) {
4479 target = mono_get_lmf_addr;
4480 } else if (!strcmp (ji->data.name, "mono_thread_force_interruption_checkpoint")) {
4481 target = mono_thread_force_interruption_checkpoint;
4482 } else if (!strcmp (ji->data.name, "mono_exception_from_token")) {
4483 target = mono_exception_from_token;
4484 } else if (!strcmp (ji->data.name, "mono_throw_exception")) {
4485 target = mono_get_throw_exception ();
4486 } else if (strstr (ji->data.name, "trampoline_func_") == ji->data.name) {
4487 int tramp_type2 = atoi (ji->data.name + strlen ("trampoline_func_"));
4488 target = (gpointer)mono_get_trampoline_func (tramp_type2);
4489 } else if (strstr (ji->data.name, "specific_trampoline_lazy_fetch_") == ji->data.name) {
4490 /* atoll is needed because the the offset is unsigned */
4494 res = sscanf (ji->data.name, "specific_trampoline_lazy_fetch_%u", &slot);
4495 g_assert (res == 1);
4496 target = mono_create_specific_trampoline (GUINT_TO_POINTER (slot), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, mono_get_root_domain (), NULL);
4497 target = mono_create_ftnptr_malloc (target);
4498 } else if (!strcmp (ji->data.name, "specific_trampoline_monitor_enter")) {
4499 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_MONITOR_ENTER, mono_get_root_domain (), NULL);
4500 target = mono_create_ftnptr_malloc (target);
4501 } else if (!strcmp (ji->data.name, "specific_trampoline_monitor_enter_v4")) {
4502 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_MONITOR_ENTER_V4, mono_get_root_domain (), NULL);
4503 target = mono_create_ftnptr_malloc (target);
4504 } else if (!strcmp (ji->data.name, "specific_trampoline_monitor_exit")) {
4505 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_MONITOR_EXIT, mono_get_root_domain (), NULL);
4506 target = mono_create_ftnptr_malloc (target);
4507 } else if (!strcmp (ji->data.name, "specific_trampoline_generic_class_init")) {
4508 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_GENERIC_CLASS_INIT, mono_get_root_domain (), NULL);
4509 target = mono_create_ftnptr_malloc (target);
4510 } else if (!strcmp (ji->data.name, "mono_thread_get_and_clear_pending_exception")) {
4511 target = mono_thread_get_and_clear_pending_exception;
4512 } else if (!strcmp (ji->data.name, "debugger_agent_single_step_from_context")) {
4513 target = debugger_agent_single_step_from_context;
4514 } else if (!strcmp (ji->data.name, "debugger_agent_breakpoint_from_context")) {
4515 target = debugger_agent_breakpoint_from_context;
4516 } else if (strstr (ji->data.name, "generic_trampoline_")) {
4517 target = mono_aot_get_trampoline (ji->data.name);
4518 } else if (aot_jit_icall_hash && g_hash_table_lookup (aot_jit_icall_hash, ji->data.name)) {
4519 /* Registered by mono_arch_init () */
4520 target = g_hash_table_lookup (aot_jit_icall_hash, ji->data.name);
4522 fprintf (stderr, "Unknown relocation '%s'\n", ji->data.name);
4523 g_assert_not_reached ();
4527 /* Hopefully the code doesn't have patches which need method or
4530 target = mono_resolve_patch_target (NULL, NULL, code, ji, FALSE);
4534 amodule->got [got_slots [pindex]] = target;
4539 mono_mempool_destroy (mp);
4546 load_function (MonoAotModule *amodule, const char *name)
4548 return load_function_full (amodule, name, NULL);
4552 * Return the trampoline identified by NAME from the mscorlib AOT file.
4553 * On ppc64, this returns a function descriptor.
4556 mono_aot_get_trampoline_full (const char *name, MonoTrampInfo **out_tinfo)
4559 MonoAotModule *amodule;
4561 image = mono_defaults.corlib;
4564 amodule = image->aot_module;
4567 return mono_create_ftnptr_malloc (load_function_full (amodule, name, out_tinfo));
4571 mono_aot_get_trampoline (const char *name)
4573 return mono_aot_get_trampoline_full (name, NULL);
4577 #include <mach/mach.h>
4579 static TrampolinePage* trampoline_pages [MONO_AOT_TRAMP_NUM];
4581 static unsigned char*
4582 get_new_trampoline_from_page (int tramp_type)
4584 MonoAotModule *amodule;
4586 TrampolinePage *page;
4589 vm_address_t addr, taddr;
4591 vm_prot_t prot, max_prot;
4592 int psize, specific_trampoline_size;
4593 unsigned char *code;
4595 specific_trampoline_size = 2 * sizeof (gpointer);
4597 mono_aot_page_lock ();
4598 page = trampoline_pages [tramp_type];
4599 if (page && page->trampolines < page->trampolines_end) {
4600 code = page->trampolines;
4601 page->trampolines += specific_trampoline_size;
4602 mono_aot_page_unlock ();
4605 mono_aot_page_unlock ();
4606 psize = mono_pagesize ();
4607 /* the trampoline template page is in the mscorlib module */
4608 image = mono_defaults.corlib;
4611 amodule = image->aot_module;
4614 g_assert (amodule->info.tramp_page_size == psize);
4616 if (tramp_type == MONO_AOT_TRAMP_SPECIFIC)
4617 tpage = load_function (amodule, "specific_trampolines_page");
4618 else if (tramp_type == MONO_AOT_TRAMP_STATIC_RGCTX)
4619 tpage = load_function (amodule, "rgctx_trampolines_page");
4620 else if (tramp_type == MONO_AOT_TRAMP_IMT_THUNK)
4621 tpage = load_function (amodule, "imt_trampolines_page");
4622 else if (tramp_type == MONO_AOT_TRAMP_GSHAREDVT_ARG)
4623 tpage = load_function (amodule, "gsharedvt_arg_trampolines_page");
4625 g_error ("Incorrect tramp type for trampolines page");
4627 /*g_warning ("loaded trampolines page at %x", tpage);*/
4629 /* avoid the unlikely case of looping forever */
4632 while (page == NULL && count-- > 0) {
4634 /* allocate two contiguous pages of memory: the first page will contain the data (like a local constant pool)
4635 * while the second will contain the trampolines.
4637 ret = vm_allocate (mach_task_self (), &addr, psize * 2, VM_FLAGS_ANYWHERE);
4638 if (ret != KERN_SUCCESS) {
4639 g_error ("Cannot allocate memory for trampolines: %d", ret);
4642 /*g_warning ("allocated trampoline double page at %x", addr);*/
4643 /* replace the second page with a remapped trampoline page */
4644 taddr = addr + psize;
4645 vm_deallocate (mach_task_self (), taddr, psize);
4646 ret = vm_remap (mach_task_self (), &taddr, psize, 0, FALSE, mach_task_self(), (vm_address_t)tpage, FALSE, &prot, &max_prot, VM_INHERIT_SHARE);
4647 if (ret != KERN_SUCCESS) {
4648 /* someone else got the page, try again */
4649 vm_deallocate (mach_task_self (), addr, psize);
4652 /*g_warning ("remapped trampoline page at %x", taddr);*/
4654 mono_aot_page_lock ();
4655 page = trampoline_pages [tramp_type];
4656 /* some other thread already allocated, so use that to avoid wasting memory */
4657 if (page && page->trampolines < page->trampolines_end) {
4658 code = page->trampolines;
4659 page->trampolines += specific_trampoline_size;
4660 mono_aot_page_unlock ();
4661 vm_deallocate (mach_task_self (), addr, psize);
4662 vm_deallocate (mach_task_self (), taddr, psize);
4665 page = (TrampolinePage*)addr;
4666 page->next = trampoline_pages [tramp_type];
4667 trampoline_pages [tramp_type] = page;
4668 page->trampolines = (void*)(taddr + amodule->info.tramp_page_code_offsets [tramp_type]);
4669 page->trampolines_end = (void*)(taddr + psize - 64);
4670 code = page->trampolines;
4671 page->trampolines += specific_trampoline_size;
4672 mono_aot_page_unlock ();
4675 g_error ("Cannot allocate more trampoline pages: %d", ret);
4680 static unsigned char*
4681 get_new_trampoline_from_page (int tramp_type)
4683 g_error ("Page trampolines not supported.");
4690 get_new_specific_trampoline_from_page (gpointer tramp, gpointer arg)
4695 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_SPECIFIC);
4697 data = (gpointer*)((char*)code - mono_pagesize ());
4700 /*g_warning ("new trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
4706 get_new_rgctx_trampoline_from_page (gpointer tramp, gpointer arg)
4711 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_STATIC_RGCTX);
4713 data = (gpointer*)((char*)code - mono_pagesize ());
4716 /*g_warning ("new rgctx trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
4722 get_new_imt_trampoline_from_page (gpointer arg)
4727 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_IMT_THUNK);
4729 data = (gpointer*)((char*)code - mono_pagesize ());
4731 /*g_warning ("new imt trampoline at %p for data %p, (stored at %p)", code, arg, data);*/
4737 get_new_gsharedvt_arg_trampoline_from_page (gpointer tramp, gpointer arg)
4742 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_GSHAREDVT_ARG);
4744 data = (gpointer*)((char*)code - mono_pagesize ());
4747 /*g_warning ("new rgctx trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
4751 /* Return a given kind of trampoline */
4753 get_numerous_trampoline (MonoAotTrampoline tramp_type, int n_got_slots, MonoAotModule **out_amodule, guint32 *got_offset, guint32 *out_tramp_size)
4755 MonoAotModule *amodule;
4756 int index, tramp_size;
4759 /* Currently, we keep all trampolines in the mscorlib AOT image */
4760 image = mono_defaults.corlib;
4765 amodule = image->aot_module;
4768 *out_amodule = amodule;
4771 #define MONOTOUCH_TRAMPOLINES_ERROR ". See http://docs.xamarin.com/ios/troubleshooting for instructions on how to fix this condition."
4773 #define MONOTOUCH_TRAMPOLINES_ERROR ""
4775 if (amodule->trampoline_index [tramp_type] == amodule->info.num_trampolines [tramp_type]) {
4776 g_error ("Ran out of trampolines of type %d in '%s' (%d)%s\n",
4777 tramp_type, image->name, amodule->info.num_trampolines [tramp_type], MONOTOUCH_TRAMPOLINES_ERROR);
4779 index = amodule->trampoline_index [tramp_type] ++;
4783 *got_offset = amodule->info.trampoline_got_offset_base [tramp_type] + (index * n_got_slots);
4785 tramp_size = amodule->info.trampoline_size [tramp_type];
4788 *out_tramp_size = tramp_size;
4790 return amodule->trampolines [tramp_type] + (index * tramp_size);
4794 * Return a specific trampoline from the AOT file.
4797 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
4799 MonoAotModule *amodule;
4800 guint32 got_offset, tramp_size;
4801 guint8 *code, *tramp;
4802 static gpointer generic_trampolines [MONO_TRAMPOLINE_NUM];
4803 static gboolean inited;
4804 static guint32 num_trampolines;
4810 mono_counters_register ("Specific trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &num_trampolines);
4819 if (!generic_trampolines [tramp_type]) {
4822 symbol = mono_get_generic_trampoline_name (tramp_type);
4823 generic_trampolines [tramp_type] = mono_aot_get_trampoline (symbol);
4827 tramp = generic_trampolines [tramp_type];
4830 if (USE_PAGE_TRAMPOLINES) {
4831 code = get_new_specific_trampoline_from_page (tramp, arg1);
4834 code = get_numerous_trampoline (MONO_AOT_TRAMP_SPECIFIC, 2, &amodule, &got_offset, &tramp_size);
4836 amodule->got [got_offset] = tramp;
4837 amodule->got [got_offset + 1] = arg1;
4841 *code_len = tramp_size;
4847 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
4849 MonoAotModule *amodule;
4853 if (USE_PAGE_TRAMPOLINES) {
4854 code = get_new_rgctx_trampoline_from_page (addr, ctx);
4856 code = get_numerous_trampoline (MONO_AOT_TRAMP_STATIC_RGCTX, 2, &amodule, &got_offset, NULL);
4858 amodule->got [got_offset] = ctx;
4859 amodule->got [got_offset + 1] = addr;
4862 /* The caller expects an ftnptr */
4863 return mono_create_ftnptr (mono_domain_get (), code);
4867 mono_aot_get_unbox_trampoline (MonoMethod *method)
4869 guint32 method_index = mono_metadata_token_index (method->token) - 1;
4870 MonoAotModule *amodule;
4872 guint32 *ut, *ut_end, *entry;
4873 int low, high, entry_index = 0;
4875 if (method->is_inflated && !mono_method_is_generic_sharable_full (method, FALSE, FALSE, FALSE)) {
4876 method_index = find_aot_method (method, &amodule);
4877 if (method_index == 0xffffff && mono_method_is_generic_sharable_full (method, FALSE, FALSE, TRUE)) {
4878 MonoMethod *shared = mini_get_shared_method_full (method, TRUE, TRUE);
4879 method_index = find_aot_method (shared, &amodule);
4881 g_assert (method_index != 0xffffff);
4883 amodule = method->klass->image->aot_module;
4887 ut = amodule->unbox_trampolines;
4888 ut_end = amodule->unbox_trampolines_end;
4890 /* Do a binary search in the sorted table */
4893 high = (ut_end - ut);
4894 while (low < high) {
4895 entry_index = (low + high) / 2;
4896 entry = &ut [entry_index];
4897 if (entry [0] < method_index) {
4898 low = entry_index + 1;
4899 } else if (entry [0] > method_index) {
4906 code = get_call_table_entry (amodule->unbox_trampoline_addresses, entry_index);
4909 /* The caller expects an ftnptr */
4910 return mono_create_ftnptr (mono_domain_get (), code);
4914 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
4918 MonoAotModule *amodule = mono_defaults.corlib->aot_module;
4919 guint32 index = MONO_RGCTX_SLOT_INDEX (slot);
4920 static int count = 0;
4923 if (index >= amodule->info.num_rgctx_fetch_trampolines) {
4924 static gpointer addr;
4928 * Use the general version of the rgctx fetch trampoline. It receives a pair of <slot, trampoline> in the rgctx arg reg.
4931 addr = load_function (amodule, "rgctx_fetch_trampoline_general");
4932 info = mono_domain_alloc0 (mono_get_root_domain (), sizeof (gpointer) * 2);
4933 info [0] = GUINT_TO_POINTER (slot);
4934 info [1] = mono_create_specific_trampoline (GUINT_TO_POINTER (slot), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, mono_get_root_domain (), NULL);
4935 code = mono_aot_get_static_rgctx_trampoline (info, addr);
4936 return mono_create_ftnptr (mono_domain_get (), code);
4939 symbol = mono_get_rgctx_fetch_trampoline_name (slot);
4940 code = load_function (mono_defaults.corlib->aot_module, symbol);
4942 /* The caller expects an ftnptr */
4943 return mono_create_ftnptr (mono_domain_get (), code);
4947 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
4952 int i, index, real_count;
4953 MonoAotModule *amodule;
4956 for (i = 0; i < count; ++i) {
4957 MonoIMTCheckItem *item = imt_entries [i];
4959 if (item->is_equals)
4963 /* Save the entries into an array */
4964 buf = mono_domain_alloc (domain, (real_count + 1) * 2 * sizeof (gpointer));
4966 for (i = 0; i < count; ++i) {
4967 MonoIMTCheckItem *item = imt_entries [i];
4969 if (!item->is_equals)
4972 g_assert (item->key);
4974 buf [(index * 2)] = item->key;
4975 if (item->has_target_code) {
4976 gpointer *p = mono_domain_alloc (domain, sizeof (gpointer));
4977 *p = item->value.target_code;
4978 buf [(index * 2) + 1] = p;
4980 buf [(index * 2) + 1] = &(vtable->vtable [item->value.vtable_slot]);
4984 buf [(index * 2)] = NULL;
4985 buf [(index * 2) + 1] = fail_tramp;
4987 if (USE_PAGE_TRAMPOLINES) {
4988 code = get_new_imt_trampoline_from_page (buf);
4990 code = get_numerous_trampoline (MONO_AOT_TRAMP_IMT_THUNK, 1, &amodule, &got_offset, NULL);
4992 amodule->got [got_offset] = buf;
4999 mono_aot_get_gsharedvt_arg_trampoline (gpointer arg, gpointer addr)
5001 MonoAotModule *amodule;
5005 if (USE_PAGE_TRAMPOLINES) {
5006 code = get_new_gsharedvt_arg_trampoline_from_page (addr, arg);
5008 code = get_numerous_trampoline (MONO_AOT_TRAMP_GSHAREDVT_ARG, 2, &amodule, &got_offset, NULL);
5010 amodule->got [got_offset] = arg;
5011 amodule->got [got_offset + 1] = addr;
5014 /* The caller expects an ftnptr */
5015 return mono_create_ftnptr (mono_domain_get (), code);
5019 * mono_aot_set_make_unreadable:
5021 * Set whenever to make all mmaped memory unreadable. In conjuction with a
5022 * SIGSEGV handler, this is useful to find out which pages the runtime tries to read.
5025 mono_aot_set_make_unreadable (gboolean unreadable)
5029 make_unreadable = unreadable;
5031 if (make_unreadable && !inited) {
5032 mono_counters_register ("AOT: pagefaults", MONO_COUNTER_JIT | MONO_COUNTER_INT, &n_pagefaults);
5037 MonoAotModule *module;
5042 find_map (gpointer key, gpointer value, gpointer user_data)
5044 MonoAotModule *module = (MonoAotModule*)value;
5045 FindMapUserData *data = (FindMapUserData*)user_data;
5048 if ((data->ptr >= module->mem_begin) && (data->ptr < module->mem_end))
5049 data->module = module;
5052 static MonoAotModule*
5053 find_module_for_addr (void *ptr)
5055 FindMapUserData data;
5057 if (!make_unreadable)
5061 data.ptr = (guint8*)ptr;
5064 g_hash_table_foreach (aot_modules, (GHFunc)find_map, &data);
5071 * mono_aot_is_pagefault:
5073 * Should be called from a SIGSEGV signal handler to find out whenever @ptr is
5074 * within memory allocated by this module.
5077 mono_aot_is_pagefault (void *ptr)
5079 if (!make_unreadable)
5083 * Not signal safe, but SIGSEGV's are synchronous, and
5084 * this is only turned on by a MONO_DEBUG option.
5086 return find_module_for_addr (ptr) != NULL;
5090 * mono_aot_handle_pagefault:
5092 * Handle a pagefault caused by an unreadable page by making it readable again.
5095 mono_aot_handle_pagefault (void *ptr)
5097 #ifndef PLATFORM_WIN32
5098 guint8* start = (guint8*)ROUND_DOWN (((gssize)ptr), mono_pagesize ());
5102 res = mono_mprotect (start, mono_pagesize (), MONO_MMAP_READ|MONO_MMAP_WRITE|MONO_MMAP_EXEC);
5103 g_assert (res == 0);
5114 mono_aot_init (void)
5119 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
5125 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
5131 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
5137 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
5143 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
5149 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
5155 mono_aot_get_plt_entry (guint8 *code)
5161 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
5167 mono_aot_patch_plt_entry (guint8 *code, guint8 *plt_entry, gpointer *got, mgreg_t *regs, guint8 *addr)
5172 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
5178 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
5180 g_assert_not_reached ();
5186 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
5188 g_assert_not_reached ();
5193 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
5195 g_assert_not_reached ();
5200 mono_aot_get_trampoline (const char *name)
5202 g_assert_not_reached ();
5207 mono_aot_get_unbox_trampoline (MonoMethod *method)
5209 g_assert_not_reached ();
5214 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
5216 g_assert_not_reached ();
5221 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
5223 g_assert_not_reached ();
5228 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
5230 g_assert_not_reached ();
5235 mono_aot_register_jit_icall (const char *name, gpointer addr)