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/tabledefs.h>
41 #include <mono/metadata/class.h>
42 #include <mono/metadata/object.h>
43 #include <mono/metadata/tokentype.h>
44 #include <mono/metadata/appdomain.h>
45 #include <mono/metadata/debug-helpers.h>
46 #include <mono/metadata/assembly.h>
47 #include <mono/metadata/metadata-internals.h>
48 #include <mono/metadata/marshal.h>
49 #include <mono/metadata/gc-internal.h>
50 #include <mono/metadata/monitor.h>
51 #include <mono/metadata/threads-types.h>
52 #include <mono/metadata/mono-endian.h>
53 #include <mono/utils/mono-logger-internal.h>
54 #include <mono/utils/mono-mmap.h>
55 #include "mono/utils/mono-compiler.h"
56 #include <mono/utils/mono-counters.h>
64 #define SHARED_EXT ".dll"
65 #elif ((defined(__ppc__) || defined(__powerpc__) || defined(__ppc64__)) || defined(__MACH__)) && !defined(__linux__)
66 #define SHARED_EXT ".dylib"
67 #elif defined(__APPLE__) && defined(TARGET_X86) && !defined(__native_client_codegen__)
68 #define SHARED_EXT ".dylib"
70 #define SHARED_EXT ".so"
73 #define ALIGN_PTR_TO(ptr,align) (gpointer)((((gssize)(ptr)) + (align - 1)) & (~(align - 1)))
74 #define ROUND_DOWN(VALUE,SIZE) ((VALUE) & ~((SIZE) - 1))
76 typedef struct MonoAotModule {
78 /* Pointer to the Global Offset Table */
80 GHashTable *name_cache;
81 GHashTable *extra_methods;
82 /* Maps methods to their code */
83 GHashTable *method_to_code;
84 /* Maps pointers into the method info to the methods themselves */
85 GHashTable *method_ref_to_method;
86 MonoAssemblyName *image_names;
88 MonoAssembly *assembly;
89 MonoImage **image_table;
90 guint32 image_table_len;
100 gint32 *code_offsets;
101 /* This contains <offset, index> pairs sorted by offset */
102 /* This is needed because LLVM emitted methods can be in any order */
103 gint32 *sorted_code_offsets;
104 gint32 sorted_code_offsets_len;
105 guint32 *method_info_offsets;
106 guint32 *got_info_offsets;
107 guint32 *ex_info_offsets;
108 guint32 *class_info_offsets;
109 guint32 *methods_loaded;
110 guint16 *class_name_table;
111 guint32 *extra_method_table;
112 guint32 *extra_method_info_offsets;
113 guint32 *unbox_trampolines;
114 guint32 *unbox_trampolines_end;
118 /* Points to the mono EH data created by LLVM */
119 guint8 *mono_eh_frame;
121 /* Points to the trampolines */
122 guint8 *trampolines [MONO_AOT_TRAMP_NUM];
123 /* The first unused trampoline of each kind */
124 guint32 trampoline_index [MONO_AOT_TRAMP_NUM];
126 MonoAotFileInfo info;
132 static GHashTable *aot_modules;
133 #define mono_aot_lock() EnterCriticalSection (&aot_mutex)
134 #define mono_aot_unlock() LeaveCriticalSection (&aot_mutex)
135 static CRITICAL_SECTION aot_mutex;
138 * Maps assembly names to the mono_aot_module_<NAME>_info symbols in the
139 * AOT modules registered by mono_aot_register_module ().
141 static GHashTable *static_aot_modules;
144 * Maps MonoJitInfo* to the aot module they belong to, this can be different
145 * from ji->method->klass->image's aot module for generic instances.
147 static GHashTable *ji_to_amodule;
150 * Whenever to AOT compile loaded assemblies on demand and store them in
151 * a cache under $HOME/.mono/aot-cache.
153 static gboolean use_aot_cache = FALSE;
156 * Whenever to spawn a new process to AOT a file or do it in-process. Only relevant if
157 * use_aot_cache is TRUE.
159 static gboolean spawn_compiler = TRUE;
162 static gint32 mono_last_aot_method = -1;
164 static gboolean make_unreadable = FALSE;
165 static guint32 name_table_accesses = 0;
166 static guint32 n_pagefaults = 0;
168 /* Used to speed-up find_aot_module () */
169 static gsize aot_code_low_addr = (gssize)-1;
170 static gsize aot_code_high_addr = 0;
172 static GHashTable *aot_jit_icall_hash;
175 init_plt (MonoAotModule *info);
177 /*****************************************************/
179 /*****************************************************/
184 * Load one of the images referenced by AMODULE. Returns NULL if the image is not
185 * found, and sets the loader error if SET_ERROR is TRUE.
188 load_image (MonoAotModule *amodule, int index, gboolean set_error)
190 MonoAssembly *assembly;
191 MonoImageOpenStatus status;
193 g_assert (index < amodule->image_table_len);
195 if (amodule->image_table [index])
196 return amodule->image_table [index];
197 if (amodule->out_of_date)
200 assembly = mono_assembly_load (&amodule->image_names [index], amodule->assembly->basedir, &status);
202 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);
203 amodule->out_of_date = TRUE;
206 char *full_name = mono_stringify_assembly_name (&amodule->image_names [index]);
207 mono_loader_set_error_assembly_load (full_name, FALSE);
213 if (strcmp (assembly->image->guid, amodule->image_guids [index])) {
214 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);
215 amodule->out_of_date = TRUE;
219 amodule->image_table [index] = assembly->image;
220 return assembly->image;
224 decode_value (guint8 *ptr, guint8 **rptr)
229 if ((b & 0x80) == 0){
232 } else if ((b & 0x40) == 0){
233 len = ((b & 0x3f) << 8 | ptr [1]);
235 } else if (b != 0xff) {
236 len = ((b & 0x1f) << 24) |
243 len = (ptr [1] << 24) | (ptr [2] << 16) | (ptr [3] << 8) | ptr [4];
249 //printf ("DECODE: %d.\n", len);
254 * mono_aot_get_method:
256 * Decode an offset table emitted by emit_offset_table (), returning the INDEXth
260 mono_aot_get_offset (guint32 *table, int index)
262 int i, group, ngroups, index_entry_size;
263 int start_offset, offset, noffsets, group_size;
264 guint8 *data_start, *p;
265 guint32 *index32 = NULL;
266 guint16 *index16 = NULL;
268 noffsets = table [0];
269 group_size = table [1];
271 index_entry_size = table [3];
272 group = index / group_size;
274 if (index_entry_size == 2) {
275 index16 = (guint16*)&table [4];
276 data_start = (guint8*)&index16 [ngroups];
277 p = data_start + index16 [group];
279 index32 = (guint32*)&table [4];
280 data_start = (guint8*)&index32 [ngroups];
281 p = data_start + index32 [group];
284 /* offset will contain the value of offsets [group * group_size] */
285 offset = start_offset = decode_value (p, &p);
286 for (i = group * group_size + 1; i <= index; ++i) {
287 offset += decode_value (p, &p);
290 //printf ("Offset lookup: %d -> %d, start=%d, p=%d\n", index, offset, start_offset, table [3 + group]);
296 decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf);
299 decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf);
302 decode_type (MonoAotModule *module, guint8 *buf, guint8 **endbuf);
304 static MonoGenericInst*
305 decode_generic_inst (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
308 MonoType **type_argv;
309 MonoGenericInst *inst;
312 type_argc = decode_value (p, &p);
313 type_argv = g_new0 (MonoType*, type_argc);
315 for (i = 0; i < type_argc; ++i) {
316 MonoClass *pclass = decode_klass_ref (module, p, &p);
321 type_argv [i] = &pclass->byval_arg;
324 inst = mono_metadata_get_generic_inst (type_argc, type_argv);
333 decode_generic_context (MonoAotModule *module, MonoGenericContext *ctx, guint8 *buf, guint8 **endbuf)
340 argc = decode_value (p, &p);
343 ctx->class_inst = decode_generic_inst (module, p, &p);
344 if (!ctx->class_inst)
348 argc = decode_value (p, &p);
351 ctx->method_inst = decode_generic_inst (module, p, &p);
352 if (!ctx->method_inst)
361 decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
364 MonoClass *klass = NULL, *eklass;
365 guint32 token, rank, idx;
369 reftype = decode_value (p, &p);
376 case MONO_AOT_TYPEREF_TYPEDEF_INDEX:
377 idx = decode_value (p, &p);
378 image = load_image (module, 0, TRUE);
381 klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF + idx);
383 case MONO_AOT_TYPEREF_TYPEDEF_INDEX_IMAGE:
384 idx = decode_value (p, &p);
385 image = load_image (module, decode_value (p, &p), TRUE);
388 klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF + idx);
390 case MONO_AOT_TYPEREF_TYPESPEC_TOKEN:
391 token = decode_value (p, &p);
392 image = module->assembly->image;
395 klass = mono_class_get (image, token);
397 case MONO_AOT_TYPEREF_GINST: {
399 MonoGenericContext ctx;
402 gclass = decode_klass_ref (module, p, &p);
405 g_assert (gclass->generic_container);
407 memset (&ctx, 0, sizeof (ctx));
408 ctx.class_inst = decode_generic_inst (module, p, &p);
411 type = mono_class_inflate_generic_type (&gclass->byval_arg, &ctx);
412 klass = mono_class_from_mono_type (type);
413 mono_metadata_free_type (type);
416 case MONO_AOT_TYPEREF_VAR: {
418 MonoGenericContainer *container;
419 int type = decode_value (p, &p);
420 int num = decode_value (p, &p);
421 gboolean is_method = decode_value (p, &p);
424 MonoMethod *method_def;
425 g_assert (type == MONO_TYPE_MVAR);
426 method_def = decode_resolve_method_ref (module, p, &p);
430 container = mono_method_get_generic_container (method_def);
432 MonoClass *class_def;
433 g_assert (type == MONO_TYPE_VAR);
434 class_def = decode_klass_ref (module, p, &p);
438 container = class_def->generic_container;
441 g_assert (container);
443 // FIXME: Memory management
444 t = g_new0 (MonoType, 1);
446 t->data.generic_param = mono_generic_container_get_param (container, num);
448 // FIXME: Maybe use types directly to avoid
449 // the overhead of creating MonoClass-es
450 klass = mono_class_from_mono_type (t);
455 case MONO_AOT_TYPEREF_ARRAY:
457 rank = decode_value (p, &p);
458 eklass = decode_klass_ref (module, p, &p);
459 klass = mono_array_class_get (eklass, rank);
461 case MONO_AOT_TYPEREF_PTR: {
464 t = decode_type (module, p, &p);
467 klass = mono_class_from_mono_type (t);
471 case MONO_AOT_TYPEREF_BLOB_INDEX: {
472 guint32 offset = decode_value (p, &p);
475 p2 = module->blob + offset;
476 klass = decode_klass_ref (module, p2, &p2);
480 g_assert_not_reached ();
483 //printf ("BLA: %s\n", mono_type_full_name (&klass->byval_arg));
488 static MonoClassField*
489 decode_field_info (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
491 MonoClass *klass = decode_klass_ref (module, buf, &buf);
498 token = MONO_TOKEN_FIELD_DEF + decode_value (p, &p);
502 return mono_class_get_field (klass, token);
506 * Parse a MonoType encoded by encode_type () in aot-compiler.c. Return malloc-ed
510 decode_type (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
515 t = g_malloc0 (sizeof (MonoType));
518 if (*p == MONO_TYPE_PINNED) {
521 } else if (*p == MONO_TYPE_BYREF) {
534 case MONO_TYPE_BOOLEAN:
548 case MONO_TYPE_STRING:
549 case MONO_TYPE_OBJECT:
550 case MONO_TYPE_TYPEDBYREF:
552 case MONO_TYPE_VALUETYPE:
553 case MONO_TYPE_CLASS:
554 t->data.klass = decode_klass_ref (module, p, &p);
556 case MONO_TYPE_SZARRAY:
557 t->data.klass = decode_klass_ref (module, p, &p);
563 t->data.type = decode_type (module, p, &p);
565 case MONO_TYPE_GENERICINST: {
567 MonoGenericContext ctx;
571 gclass = decode_klass_ref (module, p, &p);
574 g_assert (gclass->generic_container);
576 memset (&ctx, 0, sizeof (ctx));
577 ctx.class_inst = decode_generic_inst (module, p, &p);
580 type = mono_class_inflate_generic_type (&gclass->byval_arg, &ctx);
581 klass = mono_class_from_mono_type (type);
582 t->data.generic_class = klass->generic_class;
585 case MONO_TYPE_ARRAY: {
586 MonoArrayType *array;
589 // FIXME: memory management
590 array = g_new0 (MonoArrayType, 1);
591 array->eklass = decode_klass_ref (module, p, &p);
594 array->rank = decode_value (p, &p);
595 array->numsizes = decode_value (p, &p);
598 array->sizes = g_malloc0 (sizeof (int) * array->numsizes);
599 for (i = 0; i < array->numsizes; ++i)
600 array->sizes [i] = decode_value (p, &p);
602 array->numlobounds = decode_value (p, &p);
603 if (array->numlobounds)
604 array->lobounds = g_malloc0 (sizeof (int) * array->numlobounds);
605 for (i = 0; i < array->numlobounds; ++i)
606 array->lobounds [i] = decode_value (p, &p);
607 t->data.array = array;
611 g_assert_not_reached ();
619 // FIXME: Error handling, memory management
621 static MonoMethodSignature*
622 decode_signature_with_target (MonoAotModule *module, MonoMethodSignature *target, guint8 *buf, guint8 **endbuf)
624 MonoMethodSignature *sig;
626 int i, param_count, call_conv;
628 gboolean hasthis, explicit_this, has_gen_params;
632 has_gen_params = (flags & 0x10) != 0;
633 hasthis = (flags & 0x20) != 0;
634 explicit_this = (flags & 0x40) != 0;
635 call_conv = flags & 0x0F;
637 g_assert (!has_gen_params);
639 param_count = decode_value (p, &p);
640 if (target && param_count != target->param_count)
642 sig = g_malloc0 (MONO_SIZEOF_METHOD_SIGNATURE + param_count * sizeof (MonoType *));
643 sig->param_count = param_count;
644 sig->sentinelpos = -1;
645 sig->hasthis = hasthis;
646 sig->explicit_this = explicit_this;
647 sig->call_convention = call_conv;
648 sig->param_count = param_count;
649 sig->ret = decode_type (module, p, &p);
650 for (i = 0; i < param_count; ++i) {
651 if (*p == MONO_TYPE_SENTINEL) {
652 g_assert (sig->call_convention == MONO_CALL_VARARG);
653 sig->sentinelpos = i;
656 sig->params [i] = decode_type (module, p, &p);
659 if (sig->call_convention == MONO_CALL_VARARG && sig->sentinelpos == -1)
660 sig->sentinelpos = sig->param_count;
667 static MonoMethodSignature*
668 decode_signature (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
670 return decode_signature_with_target (module, NULL, buf, endbuf);
674 sig_matches_target (MonoAotModule *module, MonoMethod *target, guint8 *buf, guint8 **endbuf)
676 MonoMethodSignature *sig;
680 sig = decode_signature_with_target (module, mono_method_signature (target), p, &p);
681 res = sig && mono_metadata_signature_equal (mono_method_signature (target), sig);
687 /* Stores information returned by decode_method_ref () */
692 gboolean no_aot_trampoline;
696 * decode_method_ref_with_target:
698 * Decode a method reference, storing the image/token into a MethodRef structure.
699 * This avoids loading metadata for the method if the caller does not need it. If the method has
700 * no token, then it is loaded from metadata and ref->method is set to the method instance.
701 * If TARGET is non-NULL, abort decoding if it can be determined that the decoded method
702 * couldn't resolve to TARGET, and return FALSE.
703 * There are some kinds of method references which only support a non-null TARGET.
704 * This means that its not possible to decode this into a method, only to check
705 * that the method reference matches a given method. This is normally not a problem
706 * as these wrappers only occur in the extra_methods table, where we already have
707 * a method we want to lookup.
710 decode_method_ref_with_target (MonoAotModule *module, MethodRef *ref, MonoMethod *target, guint8 *buf, guint8 **endbuf)
712 guint32 image_index, value;
713 MonoImage *image = NULL;
716 memset (ref, 0, sizeof (MethodRef));
718 value = decode_value (p, &p);
719 image_index = value >> 24;
721 if (image_index == MONO_AOT_METHODREF_NO_AOT_TRAMPOLINE) {
722 ref->no_aot_trampoline = TRUE;
723 value = decode_value (p, &p);
724 image_index = value >> 24;
727 if (image_index < MONO_AOT_METHODREF_MIN || image_index == MONO_AOT_METHODREF_METHODSPEC || image_index == MONO_AOT_METHODREF_GINST) {
728 if (target && target->wrapper_type)
732 if (image_index == MONO_AOT_METHODREF_WRAPPER) {
733 guint32 wrapper_type;
735 wrapper_type = decode_value (p, &p);
737 if (target && target->wrapper_type != wrapper_type)
741 image = mono_defaults.corlib;
743 switch (wrapper_type) {
744 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK: {
745 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
749 mono_class_init (m->klass);
750 ref->method = mono_marshal_get_remoting_invoke_with_check (m);
753 case MONO_WRAPPER_PROXY_ISINST: {
754 MonoClass *klass = decode_klass_ref (module, p, &p);
757 ref->method = mono_marshal_get_proxy_cancast (klass);
760 case MONO_WRAPPER_LDFLD:
761 case MONO_WRAPPER_LDFLDA:
762 case MONO_WRAPPER_STFLD:
763 case MONO_WRAPPER_ISINST: {
764 MonoClass *klass = decode_klass_ref (module, p, &p);
767 if (wrapper_type == MONO_WRAPPER_LDFLD)
768 ref->method = mono_marshal_get_ldfld_wrapper (&klass->byval_arg);
769 else if (wrapper_type == MONO_WRAPPER_LDFLDA)
770 ref->method = mono_marshal_get_ldflda_wrapper (&klass->byval_arg);
771 else if (wrapper_type == MONO_WRAPPER_STFLD)
772 ref->method = mono_marshal_get_stfld_wrapper (&klass->byval_arg);
773 else if (wrapper_type == MONO_WRAPPER_ISINST)
774 ref->method = mono_marshal_get_isinst (klass);
776 g_assert_not_reached ();
779 case MONO_WRAPPER_LDFLD_REMOTE:
780 ref->method = mono_marshal_get_ldfld_remote_wrapper (NULL);
782 case MONO_WRAPPER_STFLD_REMOTE:
783 ref->method = mono_marshal_get_stfld_remote_wrapper (NULL);
785 case MONO_WRAPPER_ALLOC: {
786 int atype = decode_value (p, &p);
788 ref->method = mono_gc_get_managed_allocator_by_type (atype);
789 g_assert (ref->method);
792 case MONO_WRAPPER_WRITE_BARRIER:
793 ref->method = mono_gc_get_write_barrier ();
795 case MONO_WRAPPER_STELEMREF: {
796 int subtype = decode_value (p, &p);
798 if (subtype == WRAPPER_SUBTYPE_NONE) {
799 ref->method = mono_marshal_get_stelemref ();
800 } else if (subtype == WRAPPER_SUBTYPE_VIRTUAL_STELEMREF) {
804 kind = decode_value (p, &p);
806 /* Can't decode this */
808 if (target->wrapper_type == MONO_WRAPPER_STELEMREF) {
809 info = mono_marshal_get_wrapper_info (target);
812 if (info->subtype == subtype && info->d.virtual_stelemref.kind == kind)
813 ref->method = target;
820 g_assert_not_reached ();
824 case MONO_WRAPPER_SYNCHRONIZED: {
825 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
829 ref->method = mono_marshal_get_synchronized_wrapper (m);
832 case MONO_WRAPPER_UNKNOWN: {
833 MonoMethodDesc *desc;
834 MonoMethod *orig_method;
835 int subtype = decode_value (p, &p);
837 if (subtype == WRAPPER_SUBTYPE_PTR_TO_STRUCTURE || subtype == WRAPPER_SUBTYPE_STRUCTURE_TO_PTR) {
838 MonoClass *klass = decode_klass_ref (module, p, &p);
844 if (klass != target->klass)
847 if (subtype == WRAPPER_SUBTYPE_PTR_TO_STRUCTURE) {
848 if (strcmp (target->name, "PtrToStructure"))
850 ref->method = mono_marshal_get_ptr_to_struct (klass);
852 if (strcmp (target->name, "StructureToPtr"))
854 ref->method = mono_marshal_get_struct_to_ptr (klass);
857 if (subtype == WRAPPER_SUBTYPE_FAST_MONITOR_ENTER)
858 desc = mono_method_desc_new ("Monitor:Enter", FALSE);
859 else if (subtype == WRAPPER_SUBTYPE_FAST_MONITOR_EXIT)
860 desc = mono_method_desc_new ("Monitor:Exit", FALSE);
861 else if (subtype == WRAPPER_SUBTYPE_FAST_MONITOR_ENTER_V4)
862 desc = mono_method_desc_new ("Monitor:Enter(object,bool&)", FALSE);
864 g_assert_not_reached ();
865 orig_method = mono_method_desc_search_in_class (desc, mono_defaults.monitor_class);
866 g_assert (orig_method);
867 mono_method_desc_free (desc);
868 ref->method = mono_monitor_get_fast_path (orig_method);
872 case MONO_WRAPPER_MANAGED_TO_MANAGED: {
873 int subtype = decode_value (p, &p);
875 if (subtype == WRAPPER_SUBTYPE_ELEMENT_ADDR) {
876 int rank = decode_value (p, &p);
877 int elem_size = decode_value (p, &p);
879 ref->method = mono_marshal_get_array_address (rank, elem_size);
880 } else if (subtype == WRAPPER_SUBTYPE_STRING_CTOR) {
884 m = decode_resolve_method_ref (module, p, &p);
889 g_assert (target->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED);
891 info = mono_marshal_get_wrapper_info (target);
892 if (info && info->subtype == subtype && info->d.string_ctor.method == m)
893 ref->method = target;
899 case MONO_WRAPPER_MANAGED_TO_NATIVE: {
901 int subtype = decode_value (p, &p);
904 if (subtype == WRAPPER_SUBTYPE_ICALL_WRAPPER) {
908 if (strcmp (target->name, name) != 0)
910 ref->method = target;
912 m = decode_resolve_method_ref (module, p, &p);
917 /* This should only happen when looking for an extra method */
919 if (mono_marshal_method_from_wrapper (target) == m)
920 ref->method = target;
926 case MONO_WRAPPER_CASTCLASS: {
927 int subtype = decode_value (p, &p);
929 if (subtype == WRAPPER_SUBTYPE_CASTCLASS_WITH_CACHE)
930 ref->method = mono_marshal_get_castclass_with_cache ();
931 else if (subtype == WRAPPER_SUBTYPE_ISINST_WITH_CACHE)
932 ref->method = mono_marshal_get_isinst_with_cache ();
934 g_assert_not_reached ();
937 case MONO_WRAPPER_RUNTIME_INVOKE: {
938 int subtype = decode_value (p, &p);
942 if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_DYNAMIC) {
943 if (strcmp (target->name, "runtime_invoke_dynamic") != 0)
945 ref->method = target;
946 } else if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_DIRECT) {
948 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
952 ref->method = mono_marshal_get_runtime_invoke (m, FALSE);
953 } else if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_VIRTUAL) {
954 /* Virtual direct wrapper */
955 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
959 ref->method = mono_marshal_get_runtime_invoke (m, TRUE);
961 if (sig_matches_target (module, target, p, &p))
962 ref->method = target;
968 case MONO_WRAPPER_DELEGATE_INVOKE:
969 case MONO_WRAPPER_DELEGATE_BEGIN_INVOKE:
970 case MONO_WRAPPER_DELEGATE_END_INVOKE: {
972 * These wrappers are associated with a signature, not with a method.
973 * Since we can't decode them into methods, they need a target method.
977 if (sig_matches_target (module, target, p, &p))
978 ref->method = target;
983 case MONO_WRAPPER_NATIVE_TO_MANAGED: {
987 m = decode_resolve_method_ref (module, p, &p);
990 klass = decode_klass_ref (module, p, &p);
993 ref->method = mono_marshal_get_managed_wrapper (m, klass, 0);
997 g_assert_not_reached ();
999 } else if (image_index == MONO_AOT_METHODREF_METHODSPEC) {
1000 image_index = decode_value (p, &p);
1001 ref->token = decode_value (p, &p);
1003 image = load_image (module, image_index, TRUE);
1006 } else if (image_index == MONO_AOT_METHODREF_GINST) {
1008 MonoGenericContext ctx;
1011 * These methods do not have a token which resolves them, so we
1012 * resolve them immediately.
1014 klass = decode_klass_ref (module, p, &p);
1018 if (target && target->klass != klass)
1021 image_index = decode_value (p, &p);
1022 ref->token = decode_value (p, &p);
1024 image = load_image (module, image_index, TRUE);
1028 ref->method = mono_get_method_full (image, ref->token, NULL, NULL);
1032 memset (&ctx, 0, sizeof (ctx));
1034 if (FALSE && klass->generic_class) {
1035 ctx.class_inst = klass->generic_class->context.class_inst;
1036 ctx.method_inst = NULL;
1038 ref->method = mono_class_inflate_generic_method_full (ref->method, klass, &ctx);
1041 memset (&ctx, 0, sizeof (ctx));
1043 if (!decode_generic_context (module, &ctx, p, &p))
1046 ref->method = mono_class_inflate_generic_method_full (ref->method, klass, &ctx);
1047 } else if (image_index == MONO_AOT_METHODREF_ARRAY) {
1051 klass = decode_klass_ref (module, p, &p);
1054 method_type = decode_value (p, &p);
1055 switch (method_type) {
1057 ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank);
1060 ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank * 2);
1063 ref->method = mono_class_get_method_from_name (klass, "Get", -1);
1066 ref->method = mono_class_get_method_from_name (klass, "Address", -1);
1069 ref->method = mono_class_get_method_from_name (klass, "Set", -1);
1072 g_assert_not_reached ();
1075 g_assert (image_index < MONO_AOT_METHODREF_MIN);
1076 ref->token = MONO_TOKEN_METHOD_DEF | (value & 0xffffff);
1078 image = load_image (module, image_index, TRUE);
1091 decode_method_ref (MonoAotModule *module, MethodRef *ref, guint8 *buf, guint8 **endbuf)
1093 return decode_method_ref_with_target (module, ref, NULL, buf, endbuf);
1097 * decode_resolve_method_ref_with_target:
1099 * Similar to decode_method_ref, but resolve and return the method itself.
1102 decode_resolve_method_ref_with_target (MonoAotModule *module, MonoMethod *target, guint8 *buf, guint8 **endbuf)
1107 res = decode_method_ref_with_target (module, &ref, target, buf, endbuf);
1114 return mono_get_method (ref.image, ref.token, NULL);
1118 decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
1120 return decode_resolve_method_ref_with_target (module, NULL, buf, endbuf);
1124 create_cache_structure (void)
1130 home = g_get_home_dir ();
1134 tmp = g_build_filename (home, ".mono", NULL);
1135 if (!g_file_test (tmp, G_FILE_TEST_IS_DIR)) {
1136 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT creating directory %s", tmp);
1140 err = mkdir (tmp, 0777);
1143 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed: %s", g_strerror (errno));
1149 tmp = g_build_filename (home, ".mono", "aot-cache", NULL);
1150 if (!g_file_test (tmp, G_FILE_TEST_IS_DIR)) {
1151 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT creating directory %s", tmp);
1155 err = mkdir (tmp, 0777);
1158 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed: %s", g_strerror (errno));
1167 * load_aot_module_from_cache:
1169 * Experimental code to AOT compile loaded assemblies on demand.
1172 * - Add environment variable MONO_AOT_CACHE_OPTIONS
1173 * - Add options for controlling the cache size
1174 * - Handle full cache by deleting old assemblies lru style
1175 * - Add options for excluding assemblies during development
1176 * - Maybe add a threshold after an assembly is AOT compiled
1177 * - invoking a new mono process is a security risk
1178 * - recompile the AOT module if one of its dependencies changes
1181 load_aot_module_from_cache (MonoAssembly *assembly, char **aot_name)
1183 char *fname, *cmd, *tmp2, *aot_options;
1192 if (assembly->image->dynamic)
1195 create_cache_structure ();
1197 home = g_get_home_dir ();
1199 tmp2 = g_strdup_printf ("%s-%s%s", assembly->image->assembly_name, assembly->image->guid, SHARED_EXT);
1200 fname = g_build_filename (home, ".mono", "aot-cache", tmp2, NULL);
1204 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT trying to load from cache: '%s'.", fname);
1205 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
1208 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT not found.");
1210 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT precompiling assembly '%s'... ", assembly->image->name);
1212 aot_options = g_strdup_printf ("outfile=%s", fname);
1214 if (spawn_compiler) {
1215 /* FIXME: security */
1216 /* FIXME: Has to pass the assembly loading path to the child process */
1217 cmd = g_strdup_printf ("mono -O=all --aot=%s %s", aot_options, assembly->image->name);
1219 res = g_spawn_command_line_sync (cmd, &out, &err, &exit_status, NULL);
1221 #if !defined(HOST_WIN32) && !defined(__ppc__) && !defined(__ppc64__) && !defined(__powerpc__)
1223 if (!WIFEXITED (exit_status) && (WEXITSTATUS (exit_status) == 0))
1224 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT failed: %s.", err);
1226 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT succeeded.");
1233 res = mono_compile_assembly (assembly, mono_parse_default_optimizations (NULL), aot_options);
1235 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT failed.");
1237 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT succeeded.");
1241 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
1243 g_free (aot_options);
1250 find_symbol (MonoDl *module, gpointer *globals, const char *name, gpointer *value)
1254 guint16 *table, *entry;
1258 /* The first entry points to the hash */
1259 table = globals [0];
1262 table_size = table [0];
1265 hash = mono_metadata_str_hash (name) % table_size;
1267 entry = &table [hash * 2];
1269 /* Search the hash for the index into the globals table */
1271 while (entry [0] != 0) {
1272 guint32 index = entry [0] - 1;
1273 guint32 next = entry [1];
1275 //printf ("X: %s %s\n", (char*)globals [index * 2], name);
1277 if (!strcmp (globals [index * 2], name)) {
1278 global_index = index;
1283 entry = &table [next * 2];
1289 if (global_index != -1)
1290 *value = globals [global_index * 2 + 1];
1294 char *err = mono_dl_symbol (module, name, value);
1302 check_usable (MonoAssembly *assembly, MonoAotFileInfo *info, char **out_msg)
1306 gboolean usable = TRUE;
1310 if (strcmp (assembly->image->guid, info->assembly_guid)) {
1311 msg = g_strdup_printf ("doesn't match assembly");
1315 build_info = mono_get_runtime_build_info ();
1316 if (strlen (info->runtime_version) > 0 && strcmp (info->runtime_version, build_info)) {
1317 msg = g_strdup_printf ("compiled against runtime version '%s' while this runtime has version '%s'", info->runtime_version, build_info);
1320 g_free (build_info);
1322 full_aot = info->flags & MONO_AOT_FILE_FLAG_FULL_AOT;
1324 if (mono_aot_only && !full_aot) {
1325 msg = g_strdup_printf ("not compiled with --aot=full");
1328 if (!mono_aot_only && full_aot) {
1329 msg = g_strdup_printf ("compiled with --aot=full");
1333 /* mono_arch_find_imt_method () requires this */
1334 if ((info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM) && !mono_use_llvm) {
1335 msg = g_strdup_printf ("compiled against LLVM");
1338 if (!(info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM) && mono_use_llvm) {
1339 msg = g_strdup_printf ("not compiled against LLVM");
1343 if (mini_get_debug_options ()->mdb_optimizations && !(info->flags & MONO_AOT_FILE_FLAG_DEBUG) && !full_aot) {
1344 msg = g_strdup_printf ("not compiled for debugging");
1350 if (info->gc_name_index != -1) {
1351 char *gc_name = (char*)&blob [info->gc_name_index];
1352 const char *current_gc_name = mono_gc_get_gc_name ();
1354 if (strcmp (current_gc_name, gc_name) != 0) {
1355 msg = g_strdup_printf ("compiled against GC %s, while the current runtime uses GC %s.\n", gc_name, current_gc_name);
1365 load_aot_module (MonoAssembly *assembly, gpointer user_data)
1368 MonoAotModule *amodule;
1370 gboolean usable = TRUE;
1371 char *version_symbol = NULL;
1373 gpointer *globals = NULL;
1374 MonoAotFileInfo *info = NULL;
1377 gboolean do_load_image = TRUE;
1379 if (mono_compile_aot)
1382 if (assembly->image->aot_module)
1384 * Already loaded. This can happen because the assembly loading code might invoke
1385 * the assembly load hooks multiple times for the same assembly.
1389 if (assembly->image->dynamic)
1392 if (mono_security_get_mode () == MONO_SECURITY_MODE_CAS)
1396 if (static_aot_modules)
1397 info = g_hash_table_lookup (static_aot_modules, assembly->aname.name);
1403 /* Statically linked AOT module */
1405 aot_name = g_strdup_printf ("%s", assembly->aname.name);
1406 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "Found statically linked AOT module '%s'.\n", aot_name);
1407 globals = info->globals;
1410 sofile = load_aot_module_from_cache (assembly, &aot_name);
1413 aot_name = g_strdup_printf ("%s%s", assembly->image->name, SHARED_EXT);
1415 sofile = mono_dl_open (aot_name, MONO_DL_LAZY, &err);
1418 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed to load AOT module %s: %s\n", aot_name, err);
1424 if (!sofile && !globals) {
1425 if (mono_aot_only && assembly->image->tables [MONO_TABLE_METHOD].rows) {
1426 fprintf (stderr, "Failed to load AOT module '%s' in aot-only mode.\n", aot_name);
1434 find_symbol (sofile, globals, "mono_aot_version", (gpointer *) &version_symbol);
1435 find_symbol (sofile, globals, "mono_aot_file_info", (gpointer*)&info);
1438 if (version_symbol) {
1439 /* Old file format */
1440 version = atoi (version_symbol);
1443 version = info->version;
1446 if (version != MONO_AOT_FILE_VERSION) {
1447 msg = g_strdup_printf ("wrong file format version (expected %d got %d)", MONO_AOT_FILE_VERSION, version);
1450 usable = check_usable (assembly, info, &msg);
1454 if (mono_aot_only) {
1455 fprintf (stderr, "Failed to load AOT module '%s' while running in aot-only mode: %s.\n", aot_name, msg);
1458 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is unusable: %s.\n", aot_name, msg);
1463 mono_dl_close (sofile);
1464 assembly->image->aot_module = NULL;
1469 g_assert (info->double_align == __alignof__ (double));
1470 g_assert (info->long_align == __alignof__ (gint64));
1474 amodule = g_new0 (MonoAotModule, 1);
1475 amodule->aot_name = aot_name;
1476 amodule->assembly = assembly;
1478 memcpy (&amodule->info, info, sizeof (*info));
1480 amodule->got = amodule->info.got;
1481 amodule->got [0] = assembly->image;
1482 amodule->globals = globals;
1483 amodule->sofile = sofile;
1484 amodule->method_to_code = g_hash_table_new (mono_aligned_addr_hash, NULL);
1485 amodule->blob = blob;
1487 /* Read image table */
1489 guint32 table_len, i;
1492 table = info->image_table;
1495 table_len = *(guint32*)table;
1496 table += sizeof (guint32);
1497 amodule->image_table = g_new0 (MonoImage*, table_len);
1498 amodule->image_names = g_new0 (MonoAssemblyName, table_len);
1499 amodule->image_guids = g_new0 (char*, table_len);
1500 amodule->image_table_len = table_len;
1501 for (i = 0; i < table_len; ++i) {
1502 MonoAssemblyName *aname = &(amodule->image_names [i]);
1504 aname->name = g_strdup (table);
1505 table += strlen (table) + 1;
1506 amodule->image_guids [i] = g_strdup (table);
1507 table += strlen (table) + 1;
1509 aname->culture = g_strdup (table);
1510 table += strlen (table) + 1;
1511 memcpy (aname->public_key_token, table, strlen (table) + 1);
1512 table += strlen (table) + 1;
1514 table = ALIGN_PTR_TO (table, 8);
1515 aname->flags = *(guint32*)table;
1517 aname->major = *(guint32*)table;
1519 aname->minor = *(guint32*)table;
1521 aname->build = *(guint32*)table;
1523 aname->revision = *(guint32*)table;
1528 amodule->code_offsets = info->code_offsets;
1529 amodule->code = info->methods;
1531 /* Mask out thumb interop bit */
1532 amodule->code = (void*)((mgreg_t)amodule->code & ~1);
1534 amodule->code_end = info->methods_end;
1535 amodule->method_info_offsets = info->method_info_offsets;
1536 amodule->ex_info_offsets = info->ex_info_offsets;
1537 amodule->class_info_offsets = info->class_info_offsets;
1538 amodule->class_name_table = info->class_name_table;
1539 amodule->extra_method_table = info->extra_method_table;
1540 amodule->extra_method_info_offsets = info->extra_method_info_offsets;
1541 amodule->unbox_trampolines = info->unbox_trampolines;
1542 amodule->unbox_trampolines_end = info->unbox_trampolines_end;
1543 amodule->got_info_offsets = info->got_info_offsets;
1544 amodule->unwind_info = info->unwind_info;
1545 amodule->mem_end = info->mem_end;
1546 amodule->mem_begin = amodule->code;
1547 amodule->plt = info->plt;
1548 amodule->plt_end = info->plt_end;
1549 amodule->mono_eh_frame = info->mono_eh_frame;
1550 amodule->trampolines [MONO_AOT_TRAMP_SPECIFIC] = info->specific_trampolines;
1551 amodule->trampolines [MONO_AOT_TRAMP_STATIC_RGCTX] = info->static_rgctx_trampolines;
1552 amodule->trampolines [MONO_AOT_TRAMP_IMT_THUNK] = info->imt_thunks;
1553 amodule->thumb_end = info->thumb_end;
1555 if (make_unreadable) {
1556 #ifndef TARGET_WIN32
1558 guint8 *page_start, *page_end;
1561 addr = amodule->mem_begin;
1562 len = amodule->mem_end - amodule->mem_begin;
1564 /* Round down in both directions to avoid modifying data which is not ours */
1565 page_start = (guint8 *) (((gssize) (addr)) & ~ (mono_pagesize () - 1)) + mono_pagesize ();
1566 page_end = (guint8 *) (((gssize) (addr + len)) & ~ (mono_pagesize () - 1));
1567 if (page_end > page_start) {
1568 err = mono_mprotect (page_start, (page_end - page_start), MONO_MMAP_NONE);
1569 g_assert (err == 0);
1576 aot_code_low_addr = MIN (aot_code_low_addr, (gsize)amodule->code);
1577 aot_code_high_addr = MAX (aot_code_high_addr, (gsize)amodule->code_end);
1579 g_hash_table_insert (aot_modules, assembly, amodule);
1582 mono_jit_info_add_aot_module (assembly->image, amodule->code, amodule->code_end);
1584 assembly->image->aot_module = amodule;
1586 if (mono_aot_only) {
1587 if (mono_defaults.corlib) {
1588 /* The second got slot contains the mscorlib got addr */
1589 MonoAotModule *mscorlib_amodule = mono_defaults.corlib->aot_module;
1591 amodule->got [1] = mscorlib_amodule->got;
1593 amodule->got [1] = amodule->got;
1597 if (mono_gc_is_moving ()) {
1600 memset (&ji, 0, sizeof (ji));
1601 ji.type = MONO_PATCH_INFO_GC_CARD_TABLE_ADDR;
1603 amodule->got [2] = mono_resolve_patch_target (NULL, mono_get_root_domain (), NULL, &ji, FALSE);
1607 * Since we store methoddef and classdef tokens when referring to methods/classes in
1608 * referenced assemblies, we depend on the exact versions of the referenced assemblies.
1609 * MS calls this 'hard binding'. This means we have to load all referenced assemblies
1610 * non-lazily, since we can't handle out-of-date errors later.
1611 * The cached class info also depends on the exact assemblies.
1613 #if defined(__native_client__)
1614 /* TODO: Don't 'load_image' on mscorlib due to a */
1615 /* recursive loading problem. This should be */
1616 /* removed if mscorlib is loaded from disk. */
1617 if (strncmp(assembly->aname.name, "mscorlib", 8)) {
1618 do_load_image = TRUE;
1620 do_load_image = FALSE;
1623 if (do_load_image) {
1624 for (i = 0; i < amodule->image_table_len; ++i)
1625 load_image (amodule, i, FALSE);
1628 if (amodule->out_of_date) {
1629 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);
1630 if (mono_aot_only) {
1631 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);
1636 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT loaded AOT Module for %s.\n", assembly->image->name);
1640 * mono_aot_register_globals:
1642 * This is called by the ctor function in AOT images compiled with the
1643 * 'no-dlsym' option.
1646 mono_aot_register_globals (gpointer *globals)
1648 g_assert_not_reached ();
1652 * mono_aot_register_module:
1654 * This should be called by embedding code to register AOT modules statically linked
1655 * into the executable. AOT_INFO should be the value of the
1656 * 'mono_aot_module_<ASSEMBLY_NAME>_info' global symbol from the AOT module.
1659 mono_aot_register_module (gpointer *aot_info)
1663 MonoAotFileInfo *info = (gpointer)aot_info;
1665 g_assert (info->version == MONO_AOT_FILE_VERSION);
1667 globals = info->globals;
1670 aname = info->assembly_name;
1672 /* This could be called before startup */
1676 if (!static_aot_modules)
1677 static_aot_modules = g_hash_table_new (g_str_hash, g_str_equal);
1679 g_hash_table_insert (static_aot_modules, aname, info);
1686 mono_aot_init (void)
1688 InitializeCriticalSection (&aot_mutex);
1689 aot_modules = g_hash_table_new (NULL, NULL);
1691 mono_install_assembly_load_hook (load_aot_module, NULL);
1693 if (g_getenv ("MONO_LASTAOT"))
1694 mono_last_aot_method = atoi (g_getenv ("MONO_LASTAOT"));
1695 if (g_getenv ("MONO_AOT_CACHE"))
1696 use_aot_cache = TRUE;
1700 mono_aot_cleanup (void)
1702 if (aot_jit_icall_hash)
1703 g_hash_table_destroy (aot_jit_icall_hash);
1705 g_hash_table_destroy (aot_modules);
1709 decode_cached_class_info (MonoAotModule *module, MonoCachedClassInfo *info, guint8 *buf, guint8 **endbuf)
1715 info->vtable_size = decode_value (buf, &buf);
1716 if (info->vtable_size == -1)
1719 flags = decode_value (buf, &buf);
1720 info->ghcimpl = (flags >> 0) & 0x1;
1721 info->has_finalize = (flags >> 1) & 0x1;
1722 info->has_cctor = (flags >> 2) & 0x1;
1723 info->has_nested_classes = (flags >> 3) & 0x1;
1724 info->blittable = (flags >> 4) & 0x1;
1725 info->has_references = (flags >> 5) & 0x1;
1726 info->has_static_refs = (flags >> 6) & 0x1;
1727 info->no_special_static_fields = (flags >> 7) & 0x1;
1728 info->is_generic_container = (flags >> 8) & 0x1;
1730 if (info->has_cctor) {
1731 res = decode_method_ref (module, &ref, buf, &buf);
1734 info->cctor_token = ref.token;
1736 if (info->has_finalize) {
1737 res = decode_method_ref (module, &ref, buf, &buf);
1740 info->finalize_image = ref.image;
1741 info->finalize_token = ref.token;
1744 info->instance_size = decode_value (buf, &buf);
1745 info->class_size = decode_value (buf, &buf);
1746 info->packing_size = decode_value (buf, &buf);
1747 info->min_align = decode_value (buf, &buf);
1755 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
1758 MonoClass *klass = vtable->klass;
1759 MonoAotModule *amodule = klass->image->aot_module;
1761 MonoCachedClassInfo class_info;
1766 if (MONO_CLASS_IS_INTERFACE (klass) || klass->rank || !amodule)
1769 info = &amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
1772 err = decode_cached_class_info (amodule, &class_info, p, &p);
1776 for (i = 0; i < slot; ++i)
1777 decode_method_ref (amodule, &ref, p, &p);
1779 res = decode_method_ref (amodule, &ref, p, &p);
1782 if (ref.no_aot_trampoline)
1785 if (mono_metadata_token_index (ref.token) == 0 || mono_metadata_token_table (ref.token) != MONO_TABLE_METHOD)
1788 return mono_aot_get_method_from_token (domain, ref.image, ref.token);
1792 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
1794 MonoAotModule *amodule = klass->image->aot_module;
1798 if (klass->rank || !amodule)
1801 p = (guint8*)&amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
1803 err = decode_cached_class_info (amodule, res, p, &p);
1811 * mono_aot_get_class_from_name:
1813 * Obtains a MonoClass with a given namespace and a given name which is located in IMAGE,
1814 * using a cache stored in the AOT file.
1815 * Stores the resulting class in *KLASS if found, stores NULL otherwise.
1817 * Returns: TRUE if the klass was found/not found in the cache, FALSE if no aot file was
1821 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
1823 MonoAotModule *amodule = image->aot_module;
1824 guint16 *table, *entry;
1827 char full_name_buf [1024];
1829 const char *name2, *name_space2;
1831 guint32 cols [MONO_TYPEDEF_SIZE];
1832 GHashTable *nspace_table;
1834 if (!amodule || !amodule->class_name_table)
1841 /* First look in the cache */
1842 if (!amodule->name_cache)
1843 amodule->name_cache = g_hash_table_new (g_str_hash, g_str_equal);
1844 nspace_table = g_hash_table_lookup (amodule->name_cache, name_space);
1846 *klass = g_hash_table_lookup (nspace_table, name);
1853 table_size = amodule->class_name_table [0];
1854 table = amodule->class_name_table + 1;
1856 if (name_space [0] == '\0')
1857 full_name = g_strdup_printf ("%s", name);
1859 if (strlen (name_space) + strlen (name) < 1000) {
1860 sprintf (full_name_buf, "%s.%s", name_space, name);
1861 full_name = full_name_buf;
1863 full_name = g_strdup_printf ("%s.%s", name_space, name);
1866 hash = mono_metadata_str_hash (full_name) % table_size;
1867 if (full_name != full_name_buf)
1870 entry = &table [hash * 2];
1872 if (entry [0] != 0) {
1873 t = &image->tables [MONO_TABLE_TYPEDEF];
1876 guint32 index = entry [0];
1877 guint32 next = entry [1];
1878 guint32 token = mono_metadata_make_token (MONO_TABLE_TYPEDEF, index);
1880 name_table_accesses ++;
1882 mono_metadata_decode_row (t, index - 1, cols, MONO_TYPEDEF_SIZE);
1884 name2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
1885 name_space2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
1887 if (!strcmp (name, name2) && !strcmp (name_space, name_space2)) {
1889 *klass = mono_class_get (image, token);
1894 nspace_table = g_hash_table_lookup (amodule->name_cache, name_space);
1895 if (!nspace_table) {
1896 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
1897 g_hash_table_insert (amodule->name_cache, (char*)name_space2, nspace_table);
1899 g_hash_table_insert (nspace_table, (char*)name2, *klass);
1906 entry = &table [next * 2];
1919 * decode_mono_eh_frame:
1921 * Decode the EH information emitted by our modified LLVM compiler and construct a
1922 * MonoJitInfo structure from it.
1923 * LOCKING: Acquires the domain lock.
1926 decode_llvm_mono_eh_frame (MonoAotModule *amodule, MonoDomain *domain,
1927 MonoMethod *method, guint8 *code,
1928 MonoJitExceptionInfo *clauses, int num_clauses,
1929 int extra_size, GSList **nesting,
1930 int *this_reg, int *this_offset)
1933 guint8 *fde, *cie, *code_start, *code_end;
1934 int version, fde_count;
1936 int i, j, pos, left, right, offset, offset1, offset2, code_len;
1937 MonoJitExceptionInfo *ei;
1938 guint32 fde_len, ei_len, nested_len, nindex;
1939 gpointer *type_info;
1941 MonoLLVMFDEInfo info;
1943 g_assert (amodule->mono_eh_frame);
1945 p = amodule->mono_eh_frame;
1947 /* p points to data emitted by LLVM in DwarfException::EmitMonoEHFrame () */
1951 g_assert (version == 1);
1953 p = ALIGN_PTR_TO (p, 4);
1955 fde_count = *(guint32*)p;
1959 /* There is +1 entry in the table */
1960 cie = p + ((fde_count + 1) * 8);
1962 /* Binary search in the table to find the entry for code */
1963 offset = code - amodule->mono_eh_frame;
1968 pos = (left + right) / 2;
1970 offset1 = table [(pos * 2)];
1971 if (pos + 1 == fde_count)
1973 offset2 = amodule->code_end - amodule->code;
1975 offset2 = table [(pos + 1) * 2];
1977 if (offset < offset1)
1979 else if (offset >= offset2)
1985 code_start = amodule->mono_eh_frame + table [(pos * 2)];
1986 /* This won't overflow because there is +1 entry in the table */
1987 code_end = amodule->mono_eh_frame + table [(pos * 2) + 2];
1988 code_len = code_end - code_start;
1990 g_assert (code >= code_start && code < code_end);
1992 fde = amodule->mono_eh_frame + table [(pos * 2) + 1];
1993 /* This won't overflow because there is +1 entry in the table */
1994 fde_len = table [(pos * 2) + 2 + 1] - table [(pos * 2) + 1];
1996 mono_unwind_decode_llvm_mono_fde (fde, fde_len, cie, code_start, &info);
1998 ei_len = info.ex_info_len;
1999 type_info = info.type_info;
2000 *this_reg = info.this_reg;
2001 *this_offset = info.this_offset;
2003 /* Count number of nested clauses */
2005 for (i = 0; i < ei_len; ++i) {
2006 /* This might be unaligned */
2007 gint32 cindex1 = read32 (type_info [i]);
2010 for (l = nesting [cindex1]; l; l = l->next) {
2011 gint32 nesting_cindex = GPOINTER_TO_INT (l->data);
2013 for (j = 0; j < ei_len; ++j) {
2014 gint32 cindex2 = read32 (type_info [j]);
2016 if (cindex2 == nesting_cindex)
2023 * LLVM might represent one IL region with multiple regions, so have to
2024 * allocate a new JI.
2027 mono_domain_alloc0 (domain, MONO_SIZEOF_JIT_INFO + (sizeof (MonoJitExceptionInfo) * (ei_len + nested_len)) + extra_size);
2029 jinfo->code_size = code_len;
2030 jinfo->used_regs = mono_cache_unwind_info (info.unw_info, info.unw_info_len);
2031 jinfo->method = method;
2032 jinfo->code_start = code;
2033 jinfo->domain_neutral = 0;
2034 /* This signals that used_regs points to a normal cached unwind info */
2035 jinfo->from_aot = 0;
2036 jinfo->num_clauses = ei_len + nested_len;
2038 for (i = 0; i < ei_len; ++i) {
2040 * orig_jinfo contains the original IL exception info saved by the AOT
2041 * compiler, we have to combine that with the information produced by LLVM
2043 /* The type_info entries contain IL clause indexes */
2044 int clause_index = read32 (type_info [i]);
2045 MonoJitExceptionInfo *jei = &jinfo->clauses [i];
2046 MonoJitExceptionInfo *orig_jei = &clauses [clause_index];
2048 g_assert (clause_index < num_clauses);
2049 jei->flags = orig_jei->flags;
2050 jei->data.catch_class = orig_jei->data.catch_class;
2052 jei->try_start = ei [i].try_start;
2053 jei->try_end = ei [i].try_end;
2054 jei->handler_start = ei [i].handler_start;
2056 /* Make sure we transition to thumb when a handler starts */
2057 if (amodule->thumb_end && (guint8*)jei->handler_start < amodule->thumb_end)
2058 jei->handler_start = (void*)((mgreg_t)jei->handler_start + 1);
2061 /* See exception_cb () in mini-llvm.c as to why this is needed */
2063 for (i = 0; i < ei_len; ++i) {
2064 gint32 cindex1 = read32 (type_info [i]);
2067 for (l = nesting [cindex1]; l; l = l->next) {
2068 gint32 nesting_cindex = GPOINTER_TO_INT (l->data);
2070 for (j = 0; j < ei_len; ++j) {
2071 gint32 cindex2 = read32 (type_info [j]);
2073 if (cindex2 == nesting_cindex) {
2075 * The try interval comes from the nested clause, everything else from the
2078 memcpy (&jinfo->clauses [nindex], &jinfo->clauses [j], sizeof (MonoJitExceptionInfo));
2079 jinfo->clauses [nindex].try_start = jinfo->clauses [i].try_start;
2080 jinfo->clauses [nindex].try_end = jinfo->clauses [i].try_end;
2086 g_assert (nindex == ei_len + nested_len);
2092 * LOCKING: Acquires the domain lock.
2095 decode_exception_debug_info (MonoAotModule *amodule, MonoDomain *domain,
2096 MonoMethod *method, guint8* ex_info, guint8 *addr,
2097 guint8 *code, guint32 code_len)
2099 int i, buf_len, num_clauses;
2101 guint used_int_regs, flags;
2102 gboolean has_generic_jit_info, has_dwarf_unwind_info, has_clauses, has_seq_points, has_try_block_holes, has_arch_eh_jit_info;
2103 gboolean from_llvm, has_gc_map;
2105 int generic_info_size, try_holes_info_size, num_holes, arch_eh_jit_info_size;
2106 int this_reg = 0, this_offset = 0;
2108 /* Load the method info from the AOT file */
2111 flags = decode_value (p, &p);
2112 has_generic_jit_info = (flags & 1) != 0;
2113 has_dwarf_unwind_info = (flags & 2) != 0;
2114 has_clauses = (flags & 4) != 0;
2115 has_seq_points = (flags & 8) != 0;
2116 from_llvm = (flags & 16) != 0;
2117 has_try_block_holes = (flags & 32) != 0;
2118 has_gc_map = (flags & 64) != 0;
2119 has_arch_eh_jit_info = (flags & 128) != 0;
2121 if (has_dwarf_unwind_info) {
2124 offset = decode_value (p, &p);
2125 g_assert (offset < (1 << 30));
2126 used_int_regs = offset;
2128 used_int_regs = decode_value (p, &p);
2130 if (has_generic_jit_info)
2131 generic_info_size = sizeof (MonoGenericJitInfo);
2133 generic_info_size = 0;
2135 if (has_try_block_holes) {
2136 num_holes = decode_value (p, &p);
2137 try_holes_info_size = sizeof (MonoTryBlockHoleTableJitInfo) + num_holes * sizeof (MonoTryBlockHoleJitInfo);
2139 num_holes = try_holes_info_size = 0;
2141 /* Exception table */
2143 num_clauses = decode_value (p, &p);
2146 if (has_arch_eh_jit_info)
2147 arch_eh_jit_info_size = sizeof (MonoArchEHJitInfo);
2149 arch_eh_jit_info_size = 0;
2152 MonoJitExceptionInfo *clauses;
2156 * Part of the info is encoded by the AOT compiler, the rest is in the .eh_frame
2159 clauses = g_new0 (MonoJitExceptionInfo, num_clauses);
2160 nesting = g_new0 (GSList*, num_clauses);
2162 for (i = 0; i < num_clauses; ++i) {
2163 MonoJitExceptionInfo *ei = &clauses [i];
2165 ei->flags = decode_value (p, &p);
2167 if (decode_value (p, &p))
2168 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
2170 /* Read the list of nesting clauses */
2172 int nesting_index = decode_value (p, &p);
2173 if (nesting_index == -1)
2175 nesting [i] = g_slist_prepend (nesting [i], GINT_TO_POINTER (nesting_index));
2179 jinfo = decode_llvm_mono_eh_frame (amodule, domain, method, code, clauses, num_clauses, generic_info_size + try_holes_info_size + arch_eh_jit_info_size, nesting, &this_reg, &this_offset);
2180 jinfo->from_llvm = 1;
2183 for (i = 0; i < num_clauses; ++i)
2184 g_slist_free (nesting [i]);
2188 mono_domain_alloc0 (domain, MONO_SIZEOF_JIT_INFO + (sizeof (MonoJitExceptionInfo) * num_clauses) + generic_info_size + try_holes_info_size + arch_eh_jit_info_size);
2189 jinfo->num_clauses = num_clauses;
2191 for (i = 0; i < jinfo->num_clauses; ++i) {
2192 MonoJitExceptionInfo *ei = &jinfo->clauses [i];
2194 ei->flags = decode_value (p, &p);
2196 ei->exvar_offset = decode_value (p, &p);
2198 if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER || ei->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
2199 ei->data.filter = code + decode_value (p, &p);
2201 if (decode_value (p, &p))
2202 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
2205 ei->try_start = code + decode_value (p, &p);
2206 ei->try_end = code + decode_value (p, &p);
2207 ei->handler_start = code + decode_value (p, &p);
2210 jinfo->code_size = code_len;
2211 jinfo->used_regs = used_int_regs;
2212 jinfo->method = method;
2213 jinfo->code_start = code;
2214 jinfo->domain_neutral = 0;
2215 jinfo->from_aot = 1;
2218 if (has_generic_jit_info) {
2219 MonoGenericJitInfo *gi;
2221 jinfo->has_generic_jit_info = 1;
2223 gi = mono_jit_info_get_generic_jit_info (jinfo);
2227 gi->has_this = this_reg != -1;
2228 gi->this_reg = this_reg;
2229 gi->this_offset = this_offset;
2231 gi->has_this = decode_value (p, &p);
2232 gi->this_reg = decode_value (p, &p);
2233 gi->this_offset = decode_value (p, &p);
2236 /* This currently contains no data */
2237 gi->generic_sharing_context = g_new0 (MonoGenericSharingContext, 1);
2239 jinfo->method = decode_resolve_method_ref (amodule, p, &p);
2242 if (has_try_block_holes) {
2243 MonoTryBlockHoleTableJitInfo *table;
2245 jinfo->has_try_block_holes = 1;
2247 table = mono_jit_info_get_try_block_hole_table_info (jinfo);
2250 table->num_holes = (guint16)num_holes;
2251 for (i = 0; i < num_holes; ++i) {
2252 MonoTryBlockHoleJitInfo *hole = &table->holes [i];
2253 hole->clause = decode_value (p, &p);
2254 hole->length = decode_value (p, &p);
2255 hole->offset = decode_value (p, &p);
2259 if (has_arch_eh_jit_info) {
2260 MonoArchEHJitInfo *eh_info;
2262 jinfo->has_arch_eh_info = 1;
2264 eh_info = mono_jit_info_get_arch_eh_info (jinfo);
2265 eh_info->stack_size = decode_value (p, &p);
2268 if (has_seq_points) {
2269 MonoSeqPointInfo *seq_points;
2270 int il_offset, native_offset, last_il_offset, last_native_offset, j;
2272 int len = decode_value (p, &p);
2274 seq_points = g_malloc0 (sizeof (MonoSeqPointInfo) + (len - MONO_ZERO_LEN_ARRAY) * sizeof (SeqPoint));
2275 seq_points->len = len;
2276 last_il_offset = last_native_offset = 0;
2277 for (i = 0; i < len; ++i) {
2278 SeqPoint *sp = &seq_points->seq_points [i];
2279 il_offset = last_il_offset + decode_value (p, &p);
2280 native_offset = last_native_offset + decode_value (p, &p);
2282 sp->il_offset = il_offset;
2283 sp->native_offset = native_offset;
2285 sp->next_len = decode_value (p, &p);
2286 sp->next = g_new (int, sp->next_len);
2287 for (j = 0; j < sp->next_len; ++j)
2288 sp->next [j] = decode_value (p, &p);
2290 last_il_offset = il_offset;
2291 last_native_offset = native_offset;
2294 mono_domain_lock (domain);
2295 g_hash_table_insert (domain_jit_info (domain)->seq_points, method, seq_points);
2296 mono_domain_unlock (domain);
2299 /* Load debug info */
2300 buf_len = decode_value (p, &p);
2301 mono_debug_add_aot_method (domain, method, code, p, buf_len);
2305 int map_size = decode_value (p, &p);
2306 /* The GC map requires 4 bytes of alignment */
2307 while ((guint64)(gsize)p % 4)
2313 if (amodule != jinfo->method->klass->image->aot_module) {
2316 ji_to_amodule = g_hash_table_new (NULL, NULL);
2317 g_hash_table_insert (ji_to_amodule, jinfo, amodule);
2325 * mono_aot_get_unwind_info:
2327 * Return a pointer to the DWARF unwind info belonging to JI.
2330 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
2332 MonoAotModule *amodule = ji->method->klass->image->aot_module;
2334 guint8 *code = ji->code_start;
2337 g_assert (ji->from_aot);
2339 if (!(code >= amodule->code && code <= amodule->code_end)) {
2340 /* ji belongs to a different aot module than amodule */
2342 g_assert (ji_to_amodule);
2343 amodule = g_hash_table_lookup (ji_to_amodule, ji);
2345 g_assert (code >= amodule->code && code <= amodule->code_end);
2349 p = amodule->unwind_info + ji->used_regs;
2350 *unwind_info_len = decode_value (p, &p);
2354 static G_GNUC_UNUSED int
2355 compare_ints (const void *a, const void *b)
2357 return *(gint32*)a - *(gint32*)b;
2361 msort_code_offsets_internal (gint32 *array, int lo, int hi, gint32 *scratch)
2363 int mid = (lo + hi) / 2;
2370 for (i = lo; i < hi; ++i)
2371 if (array [(i * 2)] > array [(i * 2) + 2])
2374 /* Already sorted */
2378 msort_code_offsets_internal (array, lo, mid, scratch);
2379 msort_code_offsets_internal (array, mid + 1, hi, scratch);
2381 if (array [mid * 2] < array [(mid + 1) * 2])
2387 for (i = lo; i <= hi; i ++) {
2388 if (t_lo <= mid && ((t_hi > hi) || array [t_lo * 2] < array [t_hi * 2])) {
2389 scratch [(i * 2)] = array [t_lo * 2];
2390 scratch [(i * 2) + 1] = array [(t_lo *2) + 1];
2393 scratch [(i * 2)] = array [t_hi * 2];
2394 scratch [(i * 2) + 1] = array [(t_hi *2) + 1];
2398 for (i = lo; i <= hi; ++i) {
2399 array [(i * 2)] = scratch [i * 2];
2400 array [(i * 2) + 1] = scratch [(i * 2) + 1];
2405 msort_code_offsets (gint32 *array, int len)
2409 scratch = g_new (gint32, len * 2);
2410 msort_code_offsets_internal (array, 0, len - 1, scratch);
2415 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
2417 int pos, left, right, offset, offset1, offset2, code_len;
2418 int method_index, table_len, is_wrapper;
2420 MonoAotModule *amodule = image->aot_module;
2423 guint8 *code, *ex_info, *p;
2425 int nmethods = amodule->info.nmethods;
2426 gint32 *code_offsets;
2432 if (domain != mono_get_root_domain ())
2436 offset = (guint8*)addr - amodule->code;
2438 /* Compute a sorted table mapping code offsets to method indexes. */
2439 if (!amodule->sorted_code_offsets) {
2440 code_offsets = g_new0 (gint32, nmethods * 2);
2442 for (i = 0; i < nmethods; ++i) {
2443 /* Skip the -1 entries to speed up sorting */
2444 if (amodule->code_offsets [i] == 0xffffffff)
2446 code_offsets [(offsets_len * 2)] = amodule->code_offsets [i];
2447 code_offsets [(offsets_len *2) + 1] = i;
2450 /* Use a merge sort as this is mostly sorted */
2451 msort_code_offsets (code_offsets, offsets_len);
2452 //qsort (code_offsets, offsets_len, sizeof (gint32) * 2, compare_ints);
2453 for (i = 0; i < offsets_len -1; ++i)
2454 g_assert (code_offsets [(i * 2)] <= code_offsets [(i + 1) * 2]);
2456 if (InterlockedCompareExchangePointer ((gpointer*)&amodule->sorted_code_offsets, code_offsets, NULL) != NULL)
2457 /* Somebody got in before us */
2458 g_free (code_offsets);
2459 amodule->sorted_code_offsets_len = offsets_len;
2462 code_offsets = amodule->sorted_code_offsets;
2463 offsets_len = amodule->sorted_code_offsets_len;
2465 /* Binary search in the sorted_code_offsets table */
2467 right = offsets_len;
2469 pos = (left + right) / 2;
2471 offset1 = code_offsets [(pos * 2)];
2472 if (pos + 1 == offsets_len)
2473 offset2 = amodule->code_end - amodule->code;
2475 offset2 = code_offsets [(pos + 1) * 2];
2477 if (offset < offset1)
2479 else if (offset >= offset2)
2485 g_assert (offset >= code_offsets [(pos * 2)]);
2486 if (pos + 1 < offsets_len)
2487 g_assert (offset < code_offsets [((pos + 1) * 2)]);
2488 method_index = code_offsets [(pos * 2) + 1];
2490 code = &amodule->code [amodule->code_offsets [method_index]];
2491 ex_info = &amodule->blob [mono_aot_get_offset (amodule->ex_info_offsets, method_index)];
2493 if (pos == offsets_len - 1)
2494 code_len = amodule->code_end - code;
2496 code_len = code_offsets [(pos + 1) * 2] - code_offsets [pos * 2];
2498 g_assert ((guint8*)code <= (guint8*)addr && (guint8*)addr < (guint8*)code + code_len);
2500 /* Might be a wrapper/extra method */
2501 if (amodule->extra_methods) {
2503 method = g_hash_table_lookup (amodule->extra_methods, GUINT_TO_POINTER (method_index));
2510 if (method_index >= image->tables [MONO_TABLE_METHOD].rows) {
2512 * This is hit for extra methods which are called directly, so they are
2513 * not in amodule->extra_methods.
2515 table_len = amodule->extra_method_info_offsets [0];
2516 table = amodule->extra_method_info_offsets + 1;
2523 pos = ((left + right) / 2);
2525 g_assert (pos < table_len);
2527 if (table [pos * 2] < method_index)
2529 else if (table [pos * 2] > method_index)
2535 p = amodule->blob + table [(pos * 2) + 1];
2536 is_wrapper = decode_value (p, &p);
2537 g_assert (!is_wrapper);
2538 method = decode_resolve_method_ref (amodule, p, &p);
2541 token = mono_metadata_make_token (MONO_TABLE_METHOD, method_index + 1);
2542 method = mono_get_method (image, token, NULL);
2549 //printf ("F: %s\n", mono_method_full_name (method, TRUE));
2551 jinfo = decode_exception_debug_info (amodule, domain, method, ex_info, addr, code, code_len);
2553 g_assert ((guint8*)addr >= (guint8*)jinfo->code_start);
2554 g_assert ((guint8*)addr < (guint8*)jinfo->code_start + jinfo->code_size);
2556 /* Add it to the normal JitInfo tables */
2557 mono_jit_info_table_add (domain, jinfo);
2563 decode_patch (MonoAotModule *aot_module, MonoMemPool *mp, MonoJumpInfo *ji, guint8 *buf, guint8 **endbuf)
2571 case MONO_PATCH_INFO_METHOD:
2572 case MONO_PATCH_INFO_METHOD_JUMP:
2573 case MONO_PATCH_INFO_ICALL_ADDR:
2574 case MONO_PATCH_INFO_METHOD_RGCTX: {
2578 res = decode_method_ref (aot_module, &ref, p, &p);
2582 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)) {
2583 ji->data.target = mono_create_ftnptr (mono_domain_get (), mono_create_jit_trampoline_from_token (ref.image, ref.token));
2584 ji->type = MONO_PATCH_INFO_ABS;
2588 ji->data.method = ref.method;
2590 ji->data.method = mono_get_method (ref.image, ref.token, NULL);
2591 g_assert (ji->data.method);
2592 mono_class_init (ji->data.method->klass);
2596 case MONO_PATCH_INFO_INTERNAL_METHOD:
2597 case MONO_PATCH_INFO_JIT_ICALL_ADDR: {
2598 guint32 len = decode_value (p, &p);
2600 ji->data.name = (char*)p;
2604 case MONO_PATCH_INFO_METHODCONST:
2606 ji->data.method = decode_resolve_method_ref (aot_module, p, &p);
2607 if (!ji->data.method)
2610 case MONO_PATCH_INFO_VTABLE:
2611 case MONO_PATCH_INFO_CLASS:
2612 case MONO_PATCH_INFO_IID:
2613 case MONO_PATCH_INFO_ADJUSTED_IID:
2615 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2616 if (!ji->data.klass)
2619 case MONO_PATCH_INFO_CLASS_INIT:
2620 case MONO_PATCH_INFO_DELEGATE_TRAMPOLINE:
2621 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2622 if (!ji->data.klass)
2625 case MONO_PATCH_INFO_IMAGE:
2626 ji->data.image = load_image (aot_module, decode_value (p, &p), TRUE);
2627 if (!ji->data.image)
2630 case MONO_PATCH_INFO_FIELD:
2631 case MONO_PATCH_INFO_SFLDA:
2633 ji->data.field = decode_field_info (aot_module, p, &p);
2634 if (!ji->data.field)
2637 case MONO_PATCH_INFO_SWITCH:
2638 ji->data.table = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoBBTable));
2639 ji->data.table->table_size = decode_value (p, &p);
2640 table = mono_domain_alloc (mono_domain_get (), sizeof (gpointer) * ji->data.table->table_size);
2641 ji->data.table->table = (MonoBasicBlock**)table;
2642 for (i = 0; i < ji->data.table->table_size; i++)
2643 table [i] = (gpointer)(gssize)decode_value (p, &p);
2645 case MONO_PATCH_INFO_R4: {
2648 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (float));
2649 val = decode_value (p, &p);
2650 *(float*)ji->data.target = *(float*)&val;
2653 case MONO_PATCH_INFO_R8: {
2657 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (double));
2659 val [0] = decode_value (p, &p);
2660 val [1] = decode_value (p, &p);
2661 v = ((guint64)val [1] << 32) | ((guint64)val [0]);
2662 *(double*)ji->data.target = *(double*)&v;
2665 case MONO_PATCH_INFO_LDSTR:
2666 image = load_image (aot_module, decode_value (p, &p), TRUE);
2669 ji->data.token = mono_jump_info_token_new (mp, image, MONO_TOKEN_STRING + decode_value (p, &p));
2671 case MONO_PATCH_INFO_RVA:
2672 case MONO_PATCH_INFO_DECLSEC:
2673 case MONO_PATCH_INFO_LDTOKEN:
2674 case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
2676 image = load_image (aot_module, decode_value (p, &p), TRUE);
2679 ji->data.token = mono_jump_info_token_new (mp, image, decode_value (p, &p));
2681 ji->data.token->has_context = decode_value (p, &p);
2682 if (ji->data.token->has_context) {
2683 gboolean res = decode_generic_context (aot_module, &ji->data.token->context, p, &p);
2688 case MONO_PATCH_INFO_EXC_NAME:
2689 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2690 if (!ji->data.klass)
2692 ji->data.name = ji->data.klass->name;
2694 case MONO_PATCH_INFO_METHOD_REL:
2695 ji->data.offset = decode_value (p, &p);
2697 case MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG:
2698 case MONO_PATCH_INFO_GENERIC_CLASS_INIT:
2699 case MONO_PATCH_INFO_MONITOR_ENTER:
2700 case MONO_PATCH_INFO_MONITOR_EXIT:
2701 case MONO_PATCH_INFO_GC_CARD_TABLE_ADDR:
2702 case MONO_PATCH_INFO_CASTCLASS_CACHE:
2704 case MONO_PATCH_INFO_RGCTX_FETCH: {
2706 MonoJumpInfoRgctxEntry *entry;
2707 guint32 offset, val;
2710 offset = decode_value (p, &p);
2711 val = decode_value (p, &p);
2713 entry = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
2714 p2 = aot_module->blob + offset;
2715 entry->method = decode_resolve_method_ref (aot_module, p2, &p2);
2716 entry->in_mrgctx = ((val & 1) > 0) ? TRUE : FALSE;
2717 entry->info_type = (val >> 1) & 0xff;
2718 entry->data = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
2719 entry->data->type = (val >> 9) & 0xff;
2721 res = decode_patch (aot_module, mp, entry->data, p, &p);
2724 ji->data.rgctx_entry = entry;
2727 case MONO_PATCH_INFO_SEQ_POINT_INFO:
2729 case MONO_PATCH_INFO_LLVM_IMT_TRAMPOLINE: {
2730 MonoJumpInfoImtTramp *imt_tramp = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoImtTramp));
2732 imt_tramp->method = decode_resolve_method_ref (aot_module, p, &p);
2733 imt_tramp->vt_offset = decode_value (p, &p);
2735 ji->data.imt_tramp = imt_tramp;
2738 case MONO_PATCH_INFO_SIGNATURE:
2739 ji->data.target = decode_signature (aot_module, p, &p);
2742 g_warning ("unhandled type %d", ji->type);
2743 g_assert_not_reached ();
2754 static MonoJumpInfo*
2755 load_patch_info (MonoAotModule *aot_module, MonoMemPool *mp, int n_patches,
2756 guint32 **got_slots,
2757 guint8 *buf, guint8 **endbuf)
2759 MonoJumpInfo *patches;
2765 patches = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo) * n_patches);
2767 *got_slots = g_malloc (sizeof (guint32) * n_patches);
2769 for (pindex = 0; pindex < n_patches; ++pindex) {
2770 MonoJumpInfo *ji = &patches [pindex];
2775 got_offset = decode_value (p, &p);
2777 if (aot_module->got [got_offset]) {
2778 /* Already loaded */
2779 //printf ("HIT!\n");
2781 shared_p = aot_module->blob + mono_aot_get_offset (aot_module->got_info_offsets, got_offset);
2783 ji->type = decode_value (shared_p, &shared_p);
2785 res = decode_patch (aot_module, mp, ji, shared_p, &shared_p);
2790 (*got_slots) [pindex] = got_offset;
2797 g_free (*got_slots);
2804 register_jump_target_got_slot (MonoDomain *domain, MonoMethod *method, gpointer *got_slot)
2807 * Jump addresses cannot be patched by the trampoline code since it
2808 * does not have access to the caller's address. Instead, we collect
2809 * the addresses of the GOT slots pointing to a method, and patch
2810 * them after the method has been compiled.
2812 MonoJitDomainInfo *info = domain_jit_info (domain);
2815 mono_domain_lock (domain);
2816 if (!info->jump_target_got_slot_hash)
2817 info->jump_target_got_slot_hash = g_hash_table_new (NULL, NULL);
2818 list = g_hash_table_lookup (info->jump_target_got_slot_hash, method);
2819 list = g_slist_prepend (list, got_slot);
2820 g_hash_table_insert (info->jump_target_got_slot_hash, method, list);
2821 mono_domain_unlock (domain);
2827 * Load the method identified by METHOD_INDEX from the AOT image. Return a
2828 * pointer to the native code of the method, or NULL if not found.
2829 * METHOD might not be set if the caller only has the image/token info.
2832 load_method (MonoDomain *domain, MonoAotModule *amodule, MonoImage *image, MonoMethod *method, guint32 token, int method_index)
2835 gboolean from_plt = method == NULL;
2837 int i, pindex, n_patches, used_strings;
2838 gboolean keep_patches = TRUE;
2840 MonoJitInfo *jinfo = NULL;
2841 guint8 *code, *info;
2843 if (mono_profiler_get_events () & MONO_PROFILE_ENTER_LEAVE)
2846 if ((domain != mono_get_root_domain ()) && (!(amodule->info.opts & MONO_OPT_SHARED)))
2847 /* Non shared AOT code can't be used in other appdomains */
2850 if (amodule->out_of_date)
2853 if (amodule->code_offsets [method_index] == 0xffffffff) {
2854 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
2858 method = mono_get_method (image, token, NULL);
2859 full_name = mono_method_full_name (method, TRUE);
2860 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.\n", full_name);
2866 code = &amodule->code [amodule->code_offsets [method_index]];
2868 info = &amodule->blob [mono_aot_get_offset (amodule->method_info_offsets, method_index)];
2870 if (amodule->thumb_end && code < amodule->thumb_end) {
2871 /* Convert this into a thumb address */
2872 g_assert ((amodule->code_offsets [method_index] & 0x1) == 0);
2873 code = &amodule->code [amodule->code_offsets [method_index] + 1];
2877 if (!amodule->methods_loaded)
2878 amodule->methods_loaded = g_new0 (guint32, amodule->info.nmethods / 32 + 1);
2881 if ((amodule->methods_loaded [method_index / 32] >> (method_index % 32)) & 0x1)
2884 if (mono_last_aot_method != -1) {
2885 if (mono_jit_stats.methods_aot >= mono_last_aot_method)
2887 else if (mono_jit_stats.methods_aot == mono_last_aot_method - 1) {
2889 method = mono_get_method (image, token, NULL);
2891 char *name = mono_method_full_name (method, TRUE);
2892 printf ("LAST AOT METHOD: %s.\n", name);
2895 printf ("LAST AOT METHOD: %p %d\n", code, method_index);
2903 klass = method->klass;
2904 decode_klass_ref (amodule, p, &p);
2906 klass = decode_klass_ref (amodule, p, &p);
2909 if (amodule->info.opts & MONO_OPT_SHARED)
2910 used_strings = decode_value (p, &p);
2914 for (i = 0; i < used_strings; i++) {
2915 guint token = decode_value (p, &p);
2916 mono_ldstr (mono_get_root_domain (), image, mono_metadata_token_index (token));
2919 if (amodule->info.opts & MONO_OPT_SHARED)
2920 keep_patches = FALSE;
2922 n_patches = decode_value (p, &p);
2924 keep_patches = FALSE;
2927 MonoJumpInfo *patches;
2933 mp = mono_mempool_new ();
2935 patches = load_patch_info (amodule, mp, n_patches, &got_slots, p, &p);
2936 if (patches == NULL)
2939 for (pindex = 0; pindex < n_patches; ++pindex) {
2940 MonoJumpInfo *ji = &patches [pindex];
2942 if (!amodule->got [got_slots [pindex]]) {
2943 amodule->got [got_slots [pindex]] = mono_resolve_patch_target (method, domain, code, ji, TRUE);
2944 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
2945 amodule->got [got_slots [pindex]] = mono_create_ftnptr (domain, amodule->got [got_slots [pindex]]);
2946 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
2947 register_jump_target_got_slot (domain, ji->data.method, &(amodule->got [got_slots [pindex]]));
2949 ji->type = MONO_PATCH_INFO_NONE;
2955 mono_mempool_destroy (mp);
2958 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
2962 method = mono_get_method (image, token, NULL);
2964 full_name = mono_method_full_name (method, TRUE);
2967 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
2969 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT FOUND method %s [%p - %p %p]\n", full_name, code, code + jinfo->code_size, info);
2975 InterlockedIncrement (&mono_jit_stats.methods_aot);
2977 amodule->methods_loaded [method_index / 32] |= 1 << (method_index % 32);
2981 if (method && method->wrapper_type)
2982 g_hash_table_insert (amodule->method_to_code, method, code);
2986 if (mono_profiler_get_events () & MONO_PROFILE_JIT_COMPILATION) {
2990 method = mono_get_method (image, token, NULL);
2993 mono_profiler_method_jit (method);
2994 jinfo = mono_jit_info_table_find (domain, (char*)code);
2996 mono_profiler_method_end_jit (method, jinfo, MONO_PROFILE_OK);
2999 if (from_plt && klass && !klass->generic_container)
3000 mono_runtime_class_init (mono_class_vtable (domain, klass));
3005 /* FIXME: The space in domain->mp is wasted */
3006 if (amodule->info.opts & MONO_OPT_SHARED)
3007 /* No need to cache patches */
3008 mono_mempool_destroy (mp);
3017 find_extra_method_in_amodule (MonoAotModule *amodule, MonoMethod *method, const char *name)
3019 guint32 table_size, entry_size, hash;
3020 guint32 *table, *entry;
3022 static guint32 n_extra_decodes;
3024 if (!amodule || amodule->out_of_date)
3027 table_size = amodule->extra_method_table [0];
3028 table = amodule->extra_method_table + 1;
3031 hash = mono_aot_method_hash (method) % table_size;
3033 entry = &table [hash * entry_size];
3040 guint32 key = entry [0];
3041 guint32 value = entry [1];
3042 guint32 next = entry [entry_size - 1];
3046 p = amodule->blob + key;
3050 if (!amodule->method_ref_to_method)
3051 amodule->method_ref_to_method = g_hash_table_new (NULL, NULL);
3052 m = g_hash_table_lookup (amodule->method_ref_to_method, p);
3055 m = decode_resolve_method_ref_with_target (amodule, method, p, &p);
3058 g_hash_table_insert (amodule->method_ref_to_method, orig_p, m);
3067 /* Special case: wrappers of shared generic methods */
3068 if (m && method->wrapper_type && m->wrapper_type == m->wrapper_type &&
3069 method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
3070 MonoMethod *w1 = mono_marshal_method_from_wrapper (method);
3071 MonoMethod *w2 = mono_marshal_method_from_wrapper (m);
3073 if (w1->is_inflated && ((MonoMethodInflated *)w1)->declaring == w2) {
3079 /* Methods decoded needlessly */
3081 //printf ("%d %s %s %p\n", n_extra_decodes, mono_method_full_name (method, TRUE), mono_method_full_name (m, TRUE), orig_p);
3086 entry = &table [next * entry_size];
3095 add_module_cb (gpointer key, gpointer value, gpointer user_data)
3097 g_ptr_array_add ((GPtrArray*)user_data, value);
3101 * find_extra_method:
3103 * Try finding METHOD in the extra_method table in all AOT images.
3104 * Return its method index, or 0xffffff if not found. Set OUT_AMODULE to the AOT
3105 * module where the method was found.
3108 find_extra_method (MonoMethod *method, MonoAotModule **out_amodule)
3115 if (method->wrapper_type)
3116 name = mono_aot_wrapper_name (method);
3118 /* Try the method's module first */
3119 *out_amodule = method->klass->image->aot_module;
3120 index = find_extra_method_in_amodule (method->klass->image->aot_module, method, name);
3121 if (index != 0xffffff) {
3127 * Try all other modules.
3128 * This is needed because generic instances klass->image points to the image
3129 * containing the generic definition, but the native code is generated to the
3130 * AOT image which contains the reference.
3133 /* Make a copy to avoid doing the search inside the aot lock */
3134 modules = g_ptr_array_new ();
3136 g_hash_table_foreach (aot_modules, add_module_cb, modules);
3140 for (i = 0; i < modules->len; ++i) {
3141 MonoAotModule *amodule = g_ptr_array_index (modules, i);
3143 if (amodule != method->klass->image->aot_module)
3144 index = find_extra_method_in_amodule (amodule, method, name);
3145 if (index != 0xffffff) {
3146 *out_amodule = amodule;
3151 g_ptr_array_free (modules, TRUE);
3158 * mono_aot_get_method:
3160 * Return a pointer to the AOTed native code for METHOD if it can be found,
3162 * On platforms with function pointers, this doesn't return a function pointer.
3165 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
3167 MonoClass *klass = method->klass;
3168 guint32 method_index;
3169 MonoAotModule *amodule = klass->image->aot_module;
3175 if (amodule->out_of_date)
3178 if ((method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
3179 (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
3180 (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
3181 (method->flags & METHOD_ATTRIBUTE_ABSTRACT))
3185 * Use the original method instead of its invoke-with-check wrapper.
3186 * This is not a problem when using full-aot, since it doesn't support
3189 if (mono_aot_only && method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)
3190 return mono_aot_get_method (domain, mono_marshal_method_from_wrapper (method));
3192 g_assert (klass->inited);
3194 /* Find method index */
3195 if (method->is_inflated && mono_method_is_generic_sharable_impl_full (method, FALSE, FALSE)) {
3197 * For generic methods, we store the fully shared instance in place of the
3200 method = mono_method_get_declaring_generic_method (method);
3201 method_index = mono_metadata_token_index (method->token) - 1;
3202 } else if (method->is_inflated || !method->token) {
3203 /* This hash table is used to avoid the slower search in the extra_method_table in the AOT image */
3205 code = g_hash_table_lookup (amodule->method_to_code, method);
3210 method_index = find_extra_method (method, &amodule);
3212 * Special case the ICollection<T> wrappers for arrays, as they cannot
3213 * be statically enumerated, and each wrapper ends up calling the same
3216 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED && method->klass->rank && strstr (method->name, "System.Collections.Generic")) {
3217 MonoMethod *m = mono_aot_get_array_helper_from_wrapper (method);
3219 code = mono_aot_get_method (domain, m);
3221 if (mono_method_needs_static_rgctx_invoke (m, FALSE)) {
3222 code = mono_create_static_rgctx_trampoline (m, mono_create_ftnptr (domain, code));
3223 /* The call above returns an ftnptr */
3224 code = mono_get_addr_from_ftnptr (code);
3232 * Special case Array.GetGenericValueImpl which is a generic icall.
3233 * Generic sharing currently can't handle it, but the icall returns data using
3234 * an out parameter, so the managed-to-native wrappers can share the same code.
3236 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass == mono_defaults.array_class && !strcmp (method->name, "GetGenericValueImpl")) {
3238 MonoGenericContext ctx;
3239 MonoType *args [16];
3241 if (mono_method_signature (method)->params [1]->type == MONO_TYPE_OBJECT)
3242 /* Avoid recursion */
3245 m = mono_class_get_method_from_name (mono_defaults.array_class, "GetGenericValueImpl", 2);
3248 memset (&ctx, 0, sizeof (ctx));
3249 args [0] = &mono_defaults.object_class->byval_arg;
3250 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
3252 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method (m, &ctx), TRUE, TRUE);
3255 * Get the code for the <object> instantiation which should be emitted into
3256 * the mscorlib aot image by the AOT compiler.
3258 code = mono_aot_get_method (domain, m);
3263 /* Same for CompareExchange<T> and Exchange<T> */
3264 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass->image == mono_defaults.corlib && !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])) {
3266 MonoGenericContext ctx;
3267 MonoType *args [16];
3268 gpointer iter = NULL;
3270 while ((m = mono_class_get_methods (method->klass, &iter))) {
3271 if (mono_method_signature (m)->generic_param_count && !strcmp (m->name, method->name))
3276 memset (&ctx, 0, sizeof (ctx));
3277 args [0] = &mono_defaults.object_class->byval_arg;
3278 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
3280 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method (m, &ctx), TRUE, TRUE);
3282 /* Avoid recursion */
3287 * Get the code for the <object> instantiation which should be emitted into
3288 * the mscorlib aot image by the AOT compiler.
3290 code = mono_aot_get_method (domain, m);
3295 if (method_index == 0xffffff && method->is_inflated && mono_method_is_generic_sharable_impl_full (method, FALSE, TRUE)) {
3296 /* Partial sharing */
3297 method_index = find_extra_method (mini_get_shared_method (method), &amodule);
3300 if (method_index == 0xffffff) {
3301 if (mono_aot_only && mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
3304 full_name = mono_method_full_name (method, TRUE);
3305 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.\n", full_name);
3311 if (method_index == 0xffffff)
3314 /* Needed by find_jit_info */
3316 if (!amodule->extra_methods)
3317 amodule->extra_methods = g_hash_table_new (NULL, NULL);
3318 g_hash_table_insert (amodule->extra_methods, GUINT_TO_POINTER (method_index), method);
3322 method_index = mono_metadata_token_index (method->token) - 1;
3325 return load_method (domain, amodule, klass->image, method, method->token, method_index);
3329 * Same as mono_aot_get_method, but we try to avoid loading any metadata from the
3333 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
3335 MonoAotModule *aot_module = image->aot_module;
3341 method_index = mono_metadata_token_index (token) - 1;
3343 return load_method (domain, aot_module, image, NULL, token, method_index);
3349 } IsGotEntryUserData;
3352 check_is_got_entry (gpointer key, gpointer value, gpointer user_data)
3354 IsGotEntryUserData *data = (IsGotEntryUserData*)user_data;
3355 MonoAotModule *aot_module = (MonoAotModule*)value;
3357 if (aot_module->got && (data->addr >= (guint8*)(aot_module->got)) && (data->addr < (guint8*)(aot_module->got + aot_module->info.got_size)))
3362 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
3364 IsGotEntryUserData user_data;
3369 user_data.addr = addr;
3370 user_data.res = FALSE;
3372 g_hash_table_foreach (aot_modules, check_is_got_entry, &user_data);
3375 return user_data.res;
3380 MonoAotModule *module;
3381 } FindAotModuleUserData;
3384 find_aot_module_cb (gpointer key, gpointer value, gpointer user_data)
3386 FindAotModuleUserData *data = (FindAotModuleUserData*)user_data;
3387 MonoAotModule *aot_module = (MonoAotModule*)value;
3389 if ((data->addr >= (guint8*)(aot_module->code)) && (data->addr < (guint8*)(aot_module->code_end)))
3390 data->module = aot_module;
3393 static inline MonoAotModule*
3394 find_aot_module (guint8 *code)
3396 FindAotModuleUserData user_data;
3401 /* Reading these need no locking */
3402 if (((gsize)code < aot_code_low_addr) || ((gsize)code > aot_code_high_addr))
3405 user_data.addr = code;
3406 user_data.module = NULL;
3409 g_hash_table_foreach (aot_modules, find_aot_module_cb, &user_data);
3412 return user_data.module;
3416 mono_aot_patch_plt_entry (guint8 *code, gpointer *got, mgreg_t *regs, guint8 *addr)
3419 * Since AOT code is only used in the root domain,
3420 * mono_domain_get () != mono_get_root_domain () means the calling method
3421 * is AppDomain:InvokeInDomain, so this is the same check as in
3422 * mono_method_same_domain () but without loading the metadata for the method.
3424 if (mono_domain_get () == mono_get_root_domain ())
3425 mono_arch_patch_plt_entry (code, got, regs, addr);
3429 * mono_aot_plt_resolve:
3431 * This function is called by the entries in the PLT to resolve the actual method that
3432 * needs to be called. It returns a trampoline to the method and patches the PLT entry.
3433 * Returns NULL if the something cannot be loaded.
3436 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
3438 #ifdef MONO_ARCH_AOT_SUPPORTED
3439 guint8 *p, *target, *plt_entry;
3441 MonoAotModule *module = (MonoAotModule*)aot_module;
3442 gboolean res, no_ftnptr = FALSE;
3445 //printf ("DYN: %p %d\n", aot_module, plt_info_offset);
3447 p = &module->blob [plt_info_offset];
3449 ji.type = decode_value (p, &p);
3451 mp = mono_mempool_new_size (512);
3452 res = decode_patch (module, mp, &ji, p, &p);
3455 mono_mempool_destroy (mp);
3460 * Avoid calling resolve_patch_target in the full-aot case if possible, since
3461 * it would create a trampoline, and we don't need that.
3462 * We could do this only if the method does not need the special handling
3463 * in mono_magic_trampoline ().
3465 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) &&
3466 !mono_method_needs_static_rgctx_invoke (ji.data.method, FALSE)) {
3467 target = mono_jit_compile_method (ji.data.method);
3470 target = mono_resolve_patch_target (NULL, mono_domain_get (), NULL, &ji, TRUE);
3474 * The trampoline expects us to return a function descriptor on platforms which use
3475 * it, but resolve_patch_target returns a direct function pointer for some type of
3476 * patches, so have to translate between the two.
3477 * FIXME: Clean this up, but how ?
3479 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) {
3480 /* These should already have a function descriptor */
3481 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3482 /* Our function descriptors have a 0 environment, gcc created ones don't */
3483 if (ji.type != MONO_PATCH_INFO_INTERNAL_METHOD && ji.type != MONO_PATCH_INFO_JIT_ICALL_ADDR && ji.type != MONO_PATCH_INFO_ICALL_ADDR)
3484 g_assert (((gpointer*)target) [2] == 0);
3487 } else if (!no_ftnptr) {
3488 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3489 g_assert (((gpointer*)target) [2] != 0);
3491 target = mono_create_ftnptr (mono_domain_get (), target);
3494 mono_mempool_destroy (mp);
3496 /* Patch the PLT entry with target which might be the actual method not a trampoline */
3497 plt_entry = mono_aot_get_plt_entry (code);
3498 g_assert (plt_entry);
3499 mono_aot_patch_plt_entry (plt_entry, module->got, NULL, target);
3503 g_assert_not_reached ();
3511 * Initialize the PLT table of the AOT module. Called lazily when the first AOT
3512 * method in the module is loaded to avoid committing memory by writing to it.
3513 * LOCKING: Assumes the AOT lock is held.
3516 init_plt (MonoAotModule *amodule)
3521 if (amodule->plt_inited)
3524 tramp = mono_create_specific_trampoline (amodule, MONO_TRAMPOLINE_AOT_PLT, mono_get_root_domain (), NULL);
3527 * Initialize the PLT entries in the GOT to point to the default targets.
3530 tramp = mono_create_ftnptr (mono_domain_get (), tramp);
3531 for (i = 1; i < amodule->info.plt_size; ++i)
3532 /* All the default entries point to the AOT trampoline */
3533 ((gpointer*)amodule->got)[amodule->info.plt_got_offset_base + i] = tramp;
3535 amodule->plt_inited = TRUE;
3539 * mono_aot_get_plt_entry:
3541 * Return the address of the PLT entry called by the code at CODE if exists.
3544 mono_aot_get_plt_entry (guint8 *code)
3546 MonoAotModule *amodule = find_aot_module (code);
3547 guint8 *target = NULL;
3553 if (amodule->thumb_end && code < amodule->thumb_end) {
3554 return mono_arm_get_thumb_plt_entry (code);
3558 #ifdef MONO_ARCH_AOT_SUPPORTED
3559 target = mono_arch_get_call_target (code);
3561 g_assert_not_reached ();
3564 if ((target >= (guint8*)(amodule->plt)) && (target < (guint8*)(amodule->plt_end)))
3571 * mono_aot_get_plt_info_offset:
3573 * Return the PLT info offset belonging to the plt entry called by CODE.
3576 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
3578 guint8 *plt_entry = mono_aot_get_plt_entry (code);
3580 g_assert (plt_entry);
3582 /* The offset is embedded inside the code after the plt entry */
3583 #ifdef MONO_ARCH_AOT_SUPPORTED
3584 return mono_arch_get_plt_info_offset (plt_entry, regs, code);
3586 g_assert_not_reached ();
3592 mono_create_ftnptr_malloc (guint8 *code)
3594 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3595 MonoPPCFunctionDescriptor *ftnptr = g_malloc0 (sizeof (MonoPPCFunctionDescriptor));
3597 ftnptr->code = code;
3608 * mono_aot_register_jit_icall:
3610 * Register a JIT icall which is called by trampolines in full-aot mode. This should
3611 * be called from mono_arch_init () during startup.
3614 mono_aot_register_jit_icall (const char *name, gpointer addr)
3616 /* No need for locking */
3617 if (!aot_jit_icall_hash)
3618 aot_jit_icall_hash = g_hash_table_new (g_str_hash, g_str_equal);
3619 g_hash_table_insert (aot_jit_icall_hash, (char*)name, addr);
3625 * Load the function named NAME from the aot image.
3628 load_function (MonoAotModule *amodule, const char *name)
3632 int n_patches, pindex;
3638 symbol = g_strdup_printf ("%s", name);
3639 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&code);
3642 g_error ("Symbol '%s' not found in AOT file '%s'.\n", name, amodule->aot_name);
3644 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT FOUND function '%s' in AOT file '%s'.\n", name, amodule->aot_name);
3648 symbol = g_strdup_printf ("%s_p", name);
3649 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&p);
3652 /* Nothing to patch */
3655 p = amodule->blob + *(guint32*)p;
3657 /* Similar to mono_aot_load_method () */
3659 n_patches = decode_value (p, &p);
3662 MonoJumpInfo *patches;
3665 mp = mono_mempool_new ();
3667 patches = load_patch_info (amodule, mp, n_patches, &got_slots, p, &p);
3670 for (pindex = 0; pindex < n_patches; ++pindex) {
3671 MonoJumpInfo *ji = &patches [pindex];
3674 if (amodule->got [got_slots [pindex]])
3678 * When this code is executed, the runtime may not be initalized yet, so
3679 * resolve the patch info by hand.
3681 if (ji->type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
3682 if (!strcmp (ji->data.name, "mono_get_lmf_addr")) {
3683 target = mono_get_lmf_addr;
3684 } else if (!strcmp (ji->data.name, "mono_thread_force_interruption_checkpoint")) {
3685 target = mono_thread_force_interruption_checkpoint;
3686 } else if (!strcmp (ji->data.name, "mono_exception_from_token")) {
3687 target = mono_exception_from_token;
3688 } else if (!strcmp (ji->data.name, "mono_throw_exception")) {
3689 target = mono_get_throw_exception ();
3690 } else if (strstr (ji->data.name, "trampoline_func_") == ji->data.name) {
3691 int tramp_type2 = atoi (ji->data.name + strlen ("trampoline_func_"));
3692 target = (gpointer)mono_get_trampoline_func (tramp_type2);
3693 } else if (strstr (ji->data.name, "specific_trampoline_lazy_fetch_") == ji->data.name) {
3694 /* atoll is needed because the the offset is unsigned */
3698 res = sscanf (ji->data.name, "specific_trampoline_lazy_fetch_%u", &slot);
3699 g_assert (res == 1);
3700 target = mono_create_specific_trampoline (GUINT_TO_POINTER (slot), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, mono_get_root_domain (), NULL);
3701 target = mono_create_ftnptr_malloc (target);
3702 } else if (!strcmp (ji->data.name, "specific_trampoline_monitor_enter")) {
3703 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_MONITOR_ENTER, mono_get_root_domain (), NULL);
3704 target = mono_create_ftnptr_malloc (target);
3705 } else if (!strcmp (ji->data.name, "specific_trampoline_monitor_exit")) {
3706 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_MONITOR_EXIT, mono_get_root_domain (), NULL);
3707 target = mono_create_ftnptr_malloc (target);
3708 } else if (!strcmp (ji->data.name, "specific_trampoline_generic_class_init")) {
3709 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_GENERIC_CLASS_INIT, mono_get_root_domain (), NULL);
3710 target = mono_create_ftnptr_malloc (target);
3711 } else if (!strcmp (ji->data.name, "mono_thread_get_and_clear_pending_exception")) {
3712 target = mono_thread_get_and_clear_pending_exception;
3713 } else if (strstr (ji->data.name, "generic_trampoline_")) {
3714 target = mono_aot_get_trampoline (ji->data.name);
3715 } else if (aot_jit_icall_hash && g_hash_table_lookup (aot_jit_icall_hash, ji->data.name)) {
3716 /* Registered by mono_arch_init () */
3717 target = g_hash_table_lookup (aot_jit_icall_hash, ji->data.name);
3719 fprintf (stderr, "Unknown relocation '%s'\n", ji->data.name);
3720 g_assert_not_reached ();
3724 /* Hopefully the code doesn't have patches which need method or
3727 target = mono_resolve_patch_target (NULL, NULL, code, ji, FALSE);
3731 amodule->got [got_slots [pindex]] = target;
3736 mono_mempool_destroy (mp);
3743 * Return the trampoline identified by NAME from the mscorlib AOT file.
3744 * On ppc64, this returns a function descriptor.
3747 mono_aot_get_trampoline (const char *name)
3750 MonoAotModule *amodule;
3752 image = mono_defaults.corlib;
3755 amodule = image->aot_module;
3758 return mono_create_ftnptr_malloc (load_function (amodule, name));
3761 /* Return a given kind of trampoline */
3763 get_numerous_trampoline (MonoAotTrampoline tramp_type, int n_got_slots, MonoAotModule **out_amodule, guint32 *got_offset, guint32 *out_tramp_size)
3765 MonoAotModule *amodule;
3766 int index, tramp_size;
3769 /* Currently, we keep all trampolines in the mscorlib AOT image */
3770 image = mono_defaults.corlib;
3775 amodule = image->aot_module;
3778 *out_amodule = amodule;
3780 if (amodule->trampoline_index [tramp_type] == amodule->info.num_trampolines [tramp_type])
3781 g_error ("Ran out of trampolines of type %d in '%s' (%d)\n", tramp_type, image->name, amodule->info.num_trampolines [tramp_type]);
3783 index = amodule->trampoline_index [tramp_type] ++;
3787 *got_offset = amodule->info.trampoline_got_offset_base [tramp_type] + (index * n_got_slots);
3789 tramp_size = amodule->info.trampoline_size [tramp_type];
3792 *out_tramp_size = tramp_size;
3794 return amodule->trampolines [tramp_type] + (index * tramp_size);
3798 * Return a specific trampoline from the AOT file.
3801 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
3803 MonoAotModule *amodule;
3804 guint32 got_offset, tramp_size;
3805 guint8 *code, *tramp;
3806 static gpointer generic_trampolines [MONO_TRAMPOLINE_NUM];
3807 static gboolean inited;
3808 static guint32 num_trampolines;
3814 mono_counters_register ("Specific trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &num_trampolines);
3823 if (!generic_trampolines [tramp_type]) {
3826 symbol = mono_get_generic_trampoline_name (tramp_type);
3827 generic_trampolines [tramp_type] = mono_aot_get_trampoline (symbol);
3831 tramp = generic_trampolines [tramp_type];
3834 code = get_numerous_trampoline (MONO_AOT_TRAMP_SPECIFIC, 2, &amodule, &got_offset, &tramp_size);
3836 amodule->got [got_offset] = tramp;
3837 amodule->got [got_offset + 1] = arg1;
3840 *code_len = tramp_size;
3846 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
3848 MonoAotModule *amodule;
3852 code = get_numerous_trampoline (MONO_AOT_TRAMP_STATIC_RGCTX, 2, &amodule, &got_offset, NULL);
3854 amodule->got [got_offset] = ctx;
3855 amodule->got [got_offset + 1] = addr;
3857 /* The caller expects an ftnptr */
3858 return mono_create_ftnptr (mono_domain_get (), code);
3862 mono_aot_get_unbox_trampoline (MonoMethod *method)
3864 guint32 method_index = mono_metadata_token_index (method->token) - 1;
3865 MonoAotModule *amodule;
3867 guint32 *ut, *ut_end, *entry;
3868 int low, high, entry_index;
3870 if (method->is_inflated && !mono_method_is_generic_sharable_impl (method, FALSE)) {
3871 method_index = find_extra_method (method, &amodule);
3872 g_assert (method_index != 0xffffff);
3874 amodule = method->klass->image->aot_module;
3878 ut = amodule->unbox_trampolines;
3879 ut_end = amodule->unbox_trampolines_end;
3881 /* Do a binary search in the sorted table */
3884 high = (ut_end - ut) / 2;
3885 while (low < high) {
3886 entry_index = (low + high) / 2;
3887 entry = &ut [(entry_index * 2)];
3888 if (entry [0] < method_index) {
3889 low = entry_index + 1;
3890 } else if (entry [0] > method_index) {
3893 code = amodule->code + entry [1];
3899 /* The caller expects an ftnptr */
3900 return mono_create_ftnptr (mono_domain_get (), code);
3904 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
3909 symbol = mono_get_rgctx_fetch_trampoline_name (slot);
3910 code = load_function (mono_defaults.corlib->aot_module, symbol);
3912 /* The caller expects an ftnptr */
3913 return mono_create_ftnptr (mono_domain_get (), code);
3917 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
3922 int i, index, real_count;
3923 MonoAotModule *amodule;
3925 code = get_numerous_trampoline (MONO_AOT_TRAMP_IMT_THUNK, 1, &amodule, &got_offset, NULL);
3928 for (i = 0; i < count; ++i) {
3929 MonoIMTCheckItem *item = imt_entries [i];
3931 if (item->is_equals)
3935 /* Save the entries into an array */
3936 buf = mono_domain_alloc (domain, (real_count + 1) * 2 * sizeof (gpointer));
3938 for (i = 0; i < count; ++i) {
3939 MonoIMTCheckItem *item = imt_entries [i];
3941 if (!item->is_equals)
3944 g_assert (item->key);
3946 buf [(index * 2)] = item->key;
3947 if (item->has_target_code) {
3948 gpointer *p = mono_domain_alloc (domain, sizeof (gpointer));
3949 *p = item->value.target_code;
3950 buf [(index * 2) + 1] = p;
3952 buf [(index * 2) + 1] = &(vtable->vtable [item->value.vtable_slot]);
3956 buf [(index * 2)] = NULL;
3957 buf [(index * 2) + 1] = fail_tramp;
3959 amodule->got [got_offset] = buf;
3965 * mono_aot_set_make_unreadable:
3967 * Set whenever to make all mmaped memory unreadable. In conjuction with a
3968 * SIGSEGV handler, this is useful to find out which pages the runtime tries to read.
3971 mono_aot_set_make_unreadable (gboolean unreadable)
3975 make_unreadable = unreadable;
3977 if (make_unreadable && !inited) {
3978 mono_counters_register ("AOT pagefaults", MONO_COUNTER_JIT | MONO_COUNTER_INT, &n_pagefaults);
3983 MonoAotModule *module;
3988 find_map (gpointer key, gpointer value, gpointer user_data)
3990 MonoAotModule *module = (MonoAotModule*)value;
3991 FindMapUserData *data = (FindMapUserData*)user_data;
3994 if ((data->ptr >= module->mem_begin) && (data->ptr < module->mem_end))
3995 data->module = module;
3998 static MonoAotModule*
3999 find_module_for_addr (void *ptr)
4001 FindMapUserData data;
4003 if (!make_unreadable)
4007 data.ptr = (guint8*)ptr;
4010 g_hash_table_foreach (aot_modules, (GHFunc)find_map, &data);
4017 * mono_aot_is_pagefault:
4019 * Should be called from a SIGSEGV signal handler to find out whenever @ptr is
4020 * within memory allocated by this module.
4023 mono_aot_is_pagefault (void *ptr)
4025 if (!make_unreadable)
4029 * Not signal safe, but SIGSEGV's are synchronous, and
4030 * this is only turned on by a MONO_DEBUG option.
4032 return find_module_for_addr (ptr) != NULL;
4036 * mono_aot_handle_pagefault:
4038 * Handle a pagefault caused by an unreadable page by making it readable again.
4041 mono_aot_handle_pagefault (void *ptr)
4043 #ifndef PLATFORM_WIN32
4044 guint8* start = (guint8*)ROUND_DOWN (((gssize)ptr), mono_pagesize ());
4048 res = mono_mprotect (start, mono_pagesize (), MONO_MMAP_READ|MONO_MMAP_WRITE|MONO_MMAP_EXEC);
4049 g_assert (res == 0);
4060 mono_aot_init (void)
4065 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
4071 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
4077 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
4083 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
4089 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
4095 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
4101 mono_aot_get_plt_entry (guint8 *code)
4107 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
4113 mono_aot_patch_plt_entry (guint8 *code, gpointer *got, mgreg_t *regs, guint8 *addr)
4118 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
4124 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
4126 g_assert_not_reached ();
4132 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
4134 g_assert_not_reached ();
4139 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
4141 g_assert_not_reached ();
4146 mono_aot_get_trampoline (const char *name)
4148 g_assert_not_reached ();
4153 mono_aot_get_unbox_trampoline (MonoMethod *method)
4155 g_assert_not_reached ();
4160 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
4162 g_assert_not_reached ();
4167 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
4169 g_assert_not_reached ();
4174 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
4176 g_assert_not_reached ();
4181 mono_aot_register_jit_icall (const char *name, gpointer addr)