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_offset:
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);
856 } else if (subtype == WRAPPER_SUBTYPE_SYNCHRONIZED_INNER) {
857 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
861 ref->method = mono_marshal_get_synchronized_inner_wrapper (m);
863 if (subtype == WRAPPER_SUBTYPE_FAST_MONITOR_ENTER)
864 desc = mono_method_desc_new ("Monitor:Enter", FALSE);
865 else if (subtype == WRAPPER_SUBTYPE_FAST_MONITOR_EXIT)
866 desc = mono_method_desc_new ("Monitor:Exit", FALSE);
867 else if (subtype == WRAPPER_SUBTYPE_FAST_MONITOR_ENTER_V4)
868 desc = mono_method_desc_new ("Monitor:Enter(object,bool&)", FALSE);
870 g_assert_not_reached ();
871 orig_method = mono_method_desc_search_in_class (desc, mono_defaults.monitor_class);
872 g_assert (orig_method);
873 mono_method_desc_free (desc);
874 ref->method = mono_monitor_get_fast_path (orig_method);
878 case MONO_WRAPPER_MANAGED_TO_MANAGED: {
879 int subtype = decode_value (p, &p);
881 if (subtype == WRAPPER_SUBTYPE_ELEMENT_ADDR) {
882 int rank = decode_value (p, &p);
883 int elem_size = decode_value (p, &p);
885 ref->method = mono_marshal_get_array_address (rank, elem_size);
886 } else if (subtype == WRAPPER_SUBTYPE_STRING_CTOR) {
890 m = decode_resolve_method_ref (module, p, &p);
895 g_assert (target->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED);
897 info = mono_marshal_get_wrapper_info (target);
898 if (info && info->subtype == subtype && info->d.string_ctor.method == m)
899 ref->method = target;
905 case MONO_WRAPPER_MANAGED_TO_NATIVE: {
907 int subtype = decode_value (p, &p);
910 if (subtype == WRAPPER_SUBTYPE_ICALL_WRAPPER) {
914 if (strcmp (target->name, name) != 0)
916 ref->method = target;
918 m = decode_resolve_method_ref (module, p, &p);
923 /* This should only happen when looking for an extra method */
925 if (mono_marshal_method_from_wrapper (target) == m)
926 ref->method = target;
932 case MONO_WRAPPER_CASTCLASS: {
933 int subtype = decode_value (p, &p);
935 if (subtype == WRAPPER_SUBTYPE_CASTCLASS_WITH_CACHE)
936 ref->method = mono_marshal_get_castclass_with_cache ();
937 else if (subtype == WRAPPER_SUBTYPE_ISINST_WITH_CACHE)
938 ref->method = mono_marshal_get_isinst_with_cache ();
940 g_assert_not_reached ();
943 case MONO_WRAPPER_RUNTIME_INVOKE: {
944 int subtype = decode_value (p, &p);
948 if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_DYNAMIC) {
949 if (strcmp (target->name, "runtime_invoke_dynamic") != 0)
951 ref->method = target;
952 } else if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_DIRECT) {
954 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
958 ref->method = mono_marshal_get_runtime_invoke (m, FALSE);
959 } else if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_VIRTUAL) {
960 /* Virtual direct wrapper */
961 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
965 ref->method = mono_marshal_get_runtime_invoke (m, TRUE);
967 if (sig_matches_target (module, target, p, &p))
968 ref->method = target;
974 case MONO_WRAPPER_DELEGATE_INVOKE:
975 case MONO_WRAPPER_DELEGATE_BEGIN_INVOKE:
976 case MONO_WRAPPER_DELEGATE_END_INVOKE: {
978 * These wrappers are associated with a signature, not with a method.
979 * Since we can't decode them into methods, they need a target method.
983 if (sig_matches_target (module, target, p, &p))
984 ref->method = target;
989 case MONO_WRAPPER_NATIVE_TO_MANAGED: {
993 m = decode_resolve_method_ref (module, p, &p);
996 klass = decode_klass_ref (module, p, &p);
999 ref->method = mono_marshal_get_managed_wrapper (m, klass, 0);
1003 g_assert_not_reached ();
1005 } else if (image_index == MONO_AOT_METHODREF_METHODSPEC) {
1006 image_index = decode_value (p, &p);
1007 ref->token = decode_value (p, &p);
1009 image = load_image (module, image_index, TRUE);
1012 } else if (image_index == MONO_AOT_METHODREF_GINST) {
1014 MonoGenericContext ctx;
1017 * These methods do not have a token which resolves them, so we
1018 * resolve them immediately.
1020 klass = decode_klass_ref (module, p, &p);
1024 if (target && target->klass != klass)
1027 image_index = decode_value (p, &p);
1028 ref->token = decode_value (p, &p);
1030 image = load_image (module, image_index, TRUE);
1034 ref->method = mono_get_method_full (image, ref->token, NULL, NULL);
1038 memset (&ctx, 0, sizeof (ctx));
1040 if (FALSE && klass->generic_class) {
1041 ctx.class_inst = klass->generic_class->context.class_inst;
1042 ctx.method_inst = NULL;
1044 ref->method = mono_class_inflate_generic_method_full (ref->method, klass, &ctx);
1047 memset (&ctx, 0, sizeof (ctx));
1049 if (!decode_generic_context (module, &ctx, p, &p))
1052 ref->method = mono_class_inflate_generic_method_full (ref->method, klass, &ctx);
1053 } else if (image_index == MONO_AOT_METHODREF_ARRAY) {
1057 klass = decode_klass_ref (module, p, &p);
1060 method_type = decode_value (p, &p);
1061 switch (method_type) {
1063 ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank);
1066 ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank * 2);
1069 ref->method = mono_class_get_method_from_name (klass, "Get", -1);
1072 ref->method = mono_class_get_method_from_name (klass, "Address", -1);
1075 ref->method = mono_class_get_method_from_name (klass, "Set", -1);
1078 g_assert_not_reached ();
1081 g_assert (image_index < MONO_AOT_METHODREF_MIN);
1082 ref->token = MONO_TOKEN_METHOD_DEF | (value & 0xffffff);
1084 image = load_image (module, image_index, TRUE);
1097 decode_method_ref (MonoAotModule *module, MethodRef *ref, guint8 *buf, guint8 **endbuf)
1099 return decode_method_ref_with_target (module, ref, NULL, buf, endbuf);
1103 * decode_resolve_method_ref_with_target:
1105 * Similar to decode_method_ref, but resolve and return the method itself.
1108 decode_resolve_method_ref_with_target (MonoAotModule *module, MonoMethod *target, guint8 *buf, guint8 **endbuf)
1113 res = decode_method_ref_with_target (module, &ref, target, buf, endbuf);
1120 return mono_get_method (ref.image, ref.token, NULL);
1124 decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
1126 return decode_resolve_method_ref_with_target (module, NULL, buf, endbuf);
1130 create_cache_structure (void)
1136 home = g_get_home_dir ();
1140 tmp = g_build_filename (home, ".mono", NULL);
1141 if (!g_file_test (tmp, G_FILE_TEST_IS_DIR)) {
1142 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT creating directory %s", tmp);
1146 err = mkdir (tmp, 0777);
1149 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed: %s", g_strerror (errno));
1155 tmp = g_build_filename (home, ".mono", "aot-cache", NULL);
1156 if (!g_file_test (tmp, G_FILE_TEST_IS_DIR)) {
1157 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT creating directory %s", tmp);
1161 err = mkdir (tmp, 0777);
1164 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed: %s", g_strerror (errno));
1173 * load_aot_module_from_cache:
1175 * Experimental code to AOT compile loaded assemblies on demand.
1178 * - Add environment variable MONO_AOT_CACHE_OPTIONS
1179 * - Add options for controlling the cache size
1180 * - Handle full cache by deleting old assemblies lru style
1181 * - Add options for excluding assemblies during development
1182 * - Maybe add a threshold after an assembly is AOT compiled
1183 * - invoking a new mono process is a security risk
1184 * - recompile the AOT module if one of its dependencies changes
1187 load_aot_module_from_cache (MonoAssembly *assembly, char **aot_name)
1189 char *fname, *cmd, *tmp2, *aot_options;
1198 if (assembly->image->dynamic)
1201 create_cache_structure ();
1203 home = g_get_home_dir ();
1205 tmp2 = g_strdup_printf ("%s-%s%s", assembly->image->assembly_name, assembly->image->guid, SHARED_EXT);
1206 fname = g_build_filename (home, ".mono", "aot-cache", tmp2, NULL);
1210 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT trying to load from cache: '%s'.", fname);
1211 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
1214 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT not found.");
1216 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT precompiling assembly '%s'... ", assembly->image->name);
1218 aot_options = g_strdup_printf ("outfile=%s", fname);
1220 if (spawn_compiler) {
1221 /* FIXME: security */
1222 /* FIXME: Has to pass the assembly loading path to the child process */
1223 cmd = g_strdup_printf ("mono -O=all --aot=%s %s", aot_options, assembly->image->name);
1225 res = g_spawn_command_line_sync (cmd, &out, &err, &exit_status, NULL);
1227 #if !defined(HOST_WIN32) && !defined(__ppc__) && !defined(__ppc64__) && !defined(__powerpc__)
1229 if (!WIFEXITED (exit_status) && (WEXITSTATUS (exit_status) == 0))
1230 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT failed: %s.", err);
1232 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT succeeded.");
1239 res = mono_compile_assembly (assembly, mono_parse_default_optimizations (NULL), aot_options);
1241 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT failed.");
1243 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT succeeded.");
1247 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
1249 g_free (aot_options);
1256 find_symbol (MonoDl *module, gpointer *globals, const char *name, gpointer *value)
1260 guint16 *table, *entry;
1264 /* The first entry points to the hash */
1265 table = globals [0];
1268 table_size = table [0];
1271 hash = mono_metadata_str_hash (name) % table_size;
1273 entry = &table [hash * 2];
1275 /* Search the hash for the index into the globals table */
1277 while (entry [0] != 0) {
1278 guint32 index = entry [0] - 1;
1279 guint32 next = entry [1];
1281 //printf ("X: %s %s\n", (char*)globals [index * 2], name);
1283 if (!strcmp (globals [index * 2], name)) {
1284 global_index = index;
1289 entry = &table [next * 2];
1295 if (global_index != -1)
1296 *value = globals [global_index * 2 + 1];
1300 char *err = mono_dl_symbol (module, name, value);
1308 check_usable (MonoAssembly *assembly, MonoAotFileInfo *info, char **out_msg)
1312 gboolean usable = TRUE;
1316 if (strcmp (assembly->image->guid, info->assembly_guid)) {
1317 msg = g_strdup_printf ("doesn't match assembly");
1321 build_info = mono_get_runtime_build_info ();
1322 if (strlen (info->runtime_version) > 0 && strcmp (info->runtime_version, build_info)) {
1323 msg = g_strdup_printf ("compiled against runtime version '%s' while this runtime has version '%s'", info->runtime_version, build_info);
1326 g_free (build_info);
1328 full_aot = info->flags & MONO_AOT_FILE_FLAG_FULL_AOT;
1330 if (mono_aot_only && !full_aot) {
1331 msg = g_strdup_printf ("not compiled with --aot=full");
1334 if (!mono_aot_only && full_aot) {
1335 msg = g_strdup_printf ("compiled with --aot=full");
1339 /* mono_arch_find_imt_method () requires this */
1340 if ((info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM) && !mono_use_llvm) {
1341 msg = g_strdup_printf ("compiled against LLVM");
1344 if (!(info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM) && mono_use_llvm) {
1345 msg = g_strdup_printf ("not compiled against LLVM");
1349 if (mini_get_debug_options ()->mdb_optimizations && !(info->flags & MONO_AOT_FILE_FLAG_DEBUG) && !full_aot) {
1350 msg = g_strdup_printf ("not compiled for debugging");
1356 if (info->gc_name_index != -1) {
1357 char *gc_name = (char*)&blob [info->gc_name_index];
1358 const char *current_gc_name = mono_gc_get_gc_name ();
1360 if (strcmp (current_gc_name, gc_name) != 0) {
1361 msg = g_strdup_printf ("compiled against GC %s, while the current runtime uses GC %s.\n", gc_name, current_gc_name);
1371 load_aot_module (MonoAssembly *assembly, gpointer user_data)
1374 MonoAotModule *amodule;
1376 gboolean usable = TRUE;
1377 char *version_symbol = NULL;
1379 gpointer *globals = NULL;
1380 MonoAotFileInfo *info = NULL;
1383 gboolean do_load_image = TRUE;
1385 if (mono_compile_aot)
1388 if (assembly->image->aot_module)
1390 * Already loaded. This can happen because the assembly loading code might invoke
1391 * the assembly load hooks multiple times for the same assembly.
1395 if (assembly->image->dynamic)
1398 if (mono_security_get_mode () == MONO_SECURITY_MODE_CAS)
1402 if (static_aot_modules)
1403 info = g_hash_table_lookup (static_aot_modules, assembly->aname.name);
1409 /* Statically linked AOT module */
1411 aot_name = g_strdup_printf ("%s", assembly->aname.name);
1412 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "Found statically linked AOT module '%s'.\n", aot_name);
1413 globals = info->globals;
1416 sofile = load_aot_module_from_cache (assembly, &aot_name);
1419 aot_name = g_strdup_printf ("%s%s", assembly->image->name, SHARED_EXT);
1421 sofile = mono_dl_open (aot_name, MONO_DL_LAZY, &err);
1424 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed to load AOT module %s: %s\n", aot_name, err);
1430 if (!sofile && !globals) {
1431 if (mono_aot_only && assembly->image->tables [MONO_TABLE_METHOD].rows) {
1432 fprintf (stderr, "Failed to load AOT module '%s' in aot-only mode.\n", aot_name);
1440 find_symbol (sofile, globals, "mono_aot_version", (gpointer *) &version_symbol);
1441 find_symbol (sofile, globals, "mono_aot_file_info", (gpointer*)&info);
1444 if (version_symbol) {
1445 /* Old file format */
1446 version = atoi (version_symbol);
1449 version = info->version;
1452 if (version != MONO_AOT_FILE_VERSION) {
1453 msg = g_strdup_printf ("wrong file format version (expected %d got %d)", MONO_AOT_FILE_VERSION, version);
1456 usable = check_usable (assembly, info, &msg);
1460 if (mono_aot_only) {
1461 fprintf (stderr, "Failed to load AOT module '%s' while running in aot-only mode: %s.\n", aot_name, msg);
1464 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is unusable: %s.\n", aot_name, msg);
1469 mono_dl_close (sofile);
1470 assembly->image->aot_module = NULL;
1475 g_assert (info->double_align == __alignof__ (double));
1476 g_assert (info->long_align == __alignof__ (gint64));
1480 amodule = g_new0 (MonoAotModule, 1);
1481 amodule->aot_name = aot_name;
1482 amodule->assembly = assembly;
1484 memcpy (&amodule->info, info, sizeof (*info));
1486 amodule->got = amodule->info.got;
1487 amodule->got [0] = assembly->image;
1488 amodule->globals = globals;
1489 amodule->sofile = sofile;
1490 amodule->method_to_code = g_hash_table_new (mono_aligned_addr_hash, NULL);
1491 amodule->blob = blob;
1493 /* Read image table */
1495 guint32 table_len, i;
1498 table = info->image_table;
1501 table_len = *(guint32*)table;
1502 table += sizeof (guint32);
1503 amodule->image_table = g_new0 (MonoImage*, table_len);
1504 amodule->image_names = g_new0 (MonoAssemblyName, table_len);
1505 amodule->image_guids = g_new0 (char*, table_len);
1506 amodule->image_table_len = table_len;
1507 for (i = 0; i < table_len; ++i) {
1508 MonoAssemblyName *aname = &(amodule->image_names [i]);
1510 aname->name = g_strdup (table);
1511 table += strlen (table) + 1;
1512 amodule->image_guids [i] = g_strdup (table);
1513 table += strlen (table) + 1;
1515 aname->culture = g_strdup (table);
1516 table += strlen (table) + 1;
1517 memcpy (aname->public_key_token, table, strlen (table) + 1);
1518 table += strlen (table) + 1;
1520 table = ALIGN_PTR_TO (table, 8);
1521 aname->flags = *(guint32*)table;
1523 aname->major = *(guint32*)table;
1525 aname->minor = *(guint32*)table;
1527 aname->build = *(guint32*)table;
1529 aname->revision = *(guint32*)table;
1534 amodule->code_offsets = info->code_offsets;
1535 amodule->code = info->methods;
1537 /* Mask out thumb interop bit */
1538 amodule->code = (void*)((mgreg_t)amodule->code & ~1);
1540 amodule->code_end = info->methods_end;
1541 amodule->method_info_offsets = info->method_info_offsets;
1542 amodule->ex_info_offsets = info->ex_info_offsets;
1543 amodule->class_info_offsets = info->class_info_offsets;
1544 amodule->class_name_table = info->class_name_table;
1545 amodule->extra_method_table = info->extra_method_table;
1546 amodule->extra_method_info_offsets = info->extra_method_info_offsets;
1547 amodule->unbox_trampolines = info->unbox_trampolines;
1548 amodule->unbox_trampolines_end = info->unbox_trampolines_end;
1549 amodule->got_info_offsets = info->got_info_offsets;
1550 amodule->unwind_info = info->unwind_info;
1551 amodule->mem_end = info->mem_end;
1552 amodule->mem_begin = amodule->code;
1553 amodule->plt = info->plt;
1554 amodule->plt_end = info->plt_end;
1555 amodule->mono_eh_frame = info->mono_eh_frame;
1556 amodule->trampolines [MONO_AOT_TRAMP_SPECIFIC] = info->specific_trampolines;
1557 amodule->trampolines [MONO_AOT_TRAMP_STATIC_RGCTX] = info->static_rgctx_trampolines;
1558 amodule->trampolines [MONO_AOT_TRAMP_IMT_THUNK] = info->imt_thunks;
1559 amodule->thumb_end = info->thumb_end;
1561 if (make_unreadable) {
1562 #ifndef TARGET_WIN32
1564 guint8 *page_start, *page_end;
1567 addr = amodule->mem_begin;
1568 len = amodule->mem_end - amodule->mem_begin;
1570 /* Round down in both directions to avoid modifying data which is not ours */
1571 page_start = (guint8 *) (((gssize) (addr)) & ~ (mono_pagesize () - 1)) + mono_pagesize ();
1572 page_end = (guint8 *) (((gssize) (addr + len)) & ~ (mono_pagesize () - 1));
1573 if (page_end > page_start) {
1574 err = mono_mprotect (page_start, (page_end - page_start), MONO_MMAP_NONE);
1575 g_assert (err == 0);
1582 aot_code_low_addr = MIN (aot_code_low_addr, (gsize)amodule->code);
1583 aot_code_high_addr = MAX (aot_code_high_addr, (gsize)amodule->code_end);
1585 g_hash_table_insert (aot_modules, assembly, amodule);
1588 mono_jit_info_add_aot_module (assembly->image, amodule->code, amodule->code_end);
1590 assembly->image->aot_module = amodule;
1592 if (mono_aot_only) {
1593 if (mono_defaults.corlib) {
1594 /* The second got slot contains the mscorlib got addr */
1595 MonoAotModule *mscorlib_amodule = mono_defaults.corlib->aot_module;
1597 amodule->got [1] = mscorlib_amodule->got;
1599 amodule->got [1] = amodule->got;
1603 if (mono_gc_is_moving ()) {
1606 memset (&ji, 0, sizeof (ji));
1607 ji.type = MONO_PATCH_INFO_GC_CARD_TABLE_ADDR;
1609 amodule->got [2] = mono_resolve_patch_target (NULL, mono_get_root_domain (), NULL, &ji, FALSE);
1613 * Since we store methoddef and classdef tokens when referring to methods/classes in
1614 * referenced assemblies, we depend on the exact versions of the referenced assemblies.
1615 * MS calls this 'hard binding'. This means we have to load all referenced assemblies
1616 * non-lazily, since we can't handle out-of-date errors later.
1617 * The cached class info also depends on the exact assemblies.
1619 #if defined(__native_client__)
1620 /* TODO: Don't 'load_image' on mscorlib due to a */
1621 /* recursive loading problem. This should be */
1622 /* removed if mscorlib is loaded from disk. */
1623 if (strncmp(assembly->aname.name, "mscorlib", 8)) {
1624 do_load_image = TRUE;
1626 do_load_image = FALSE;
1629 if (do_load_image) {
1630 for (i = 0; i < amodule->image_table_len; ++i)
1631 load_image (amodule, i, FALSE);
1634 if (amodule->out_of_date) {
1635 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);
1636 if (mono_aot_only) {
1637 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);
1642 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT loaded AOT Module for %s.\n", assembly->image->name);
1646 * mono_aot_register_globals:
1648 * This is called by the ctor function in AOT images compiled with the
1649 * 'no-dlsym' option.
1652 mono_aot_register_globals (gpointer *globals)
1654 g_assert_not_reached ();
1658 * mono_aot_register_module:
1660 * This should be called by embedding code to register AOT modules statically linked
1661 * into the executable. AOT_INFO should be the value of the
1662 * 'mono_aot_module_<ASSEMBLY_NAME>_info' global symbol from the AOT module.
1665 mono_aot_register_module (gpointer *aot_info)
1669 MonoAotFileInfo *info = (gpointer)aot_info;
1671 g_assert (info->version == MONO_AOT_FILE_VERSION);
1673 globals = info->globals;
1676 aname = info->assembly_name;
1678 /* This could be called before startup */
1682 if (!static_aot_modules)
1683 static_aot_modules = g_hash_table_new (g_str_hash, g_str_equal);
1685 g_hash_table_insert (static_aot_modules, aname, info);
1692 mono_aot_init (void)
1694 InitializeCriticalSection (&aot_mutex);
1695 aot_modules = g_hash_table_new (NULL, NULL);
1697 mono_install_assembly_load_hook (load_aot_module, NULL);
1699 if (g_getenv ("MONO_LASTAOT"))
1700 mono_last_aot_method = atoi (g_getenv ("MONO_LASTAOT"));
1701 if (g_getenv ("MONO_AOT_CACHE"))
1702 use_aot_cache = TRUE;
1706 mono_aot_cleanup (void)
1708 if (aot_jit_icall_hash)
1709 g_hash_table_destroy (aot_jit_icall_hash);
1711 g_hash_table_destroy (aot_modules);
1715 decode_cached_class_info (MonoAotModule *module, MonoCachedClassInfo *info, guint8 *buf, guint8 **endbuf)
1721 info->vtable_size = decode_value (buf, &buf);
1722 if (info->vtable_size == -1)
1725 flags = decode_value (buf, &buf);
1726 info->ghcimpl = (flags >> 0) & 0x1;
1727 info->has_finalize = (flags >> 1) & 0x1;
1728 info->has_cctor = (flags >> 2) & 0x1;
1729 info->has_nested_classes = (flags >> 3) & 0x1;
1730 info->blittable = (flags >> 4) & 0x1;
1731 info->has_references = (flags >> 5) & 0x1;
1732 info->has_static_refs = (flags >> 6) & 0x1;
1733 info->no_special_static_fields = (flags >> 7) & 0x1;
1734 info->is_generic_container = (flags >> 8) & 0x1;
1736 if (info->has_cctor) {
1737 res = decode_method_ref (module, &ref, buf, &buf);
1740 info->cctor_token = ref.token;
1742 if (info->has_finalize) {
1743 res = decode_method_ref (module, &ref, buf, &buf);
1746 info->finalize_image = ref.image;
1747 info->finalize_token = ref.token;
1750 info->instance_size = decode_value (buf, &buf);
1751 info->class_size = decode_value (buf, &buf);
1752 info->packing_size = decode_value (buf, &buf);
1753 info->min_align = decode_value (buf, &buf);
1761 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
1764 MonoClass *klass = vtable->klass;
1765 MonoAotModule *amodule = klass->image->aot_module;
1767 MonoCachedClassInfo class_info;
1772 if (MONO_CLASS_IS_INTERFACE (klass) || klass->rank || !amodule)
1775 info = &amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
1778 err = decode_cached_class_info (amodule, &class_info, p, &p);
1782 for (i = 0; i < slot; ++i)
1783 decode_method_ref (amodule, &ref, p, &p);
1785 res = decode_method_ref (amodule, &ref, p, &p);
1788 if (ref.no_aot_trampoline)
1791 if (mono_metadata_token_index (ref.token) == 0 || mono_metadata_token_table (ref.token) != MONO_TABLE_METHOD)
1794 return mono_aot_get_method_from_token (domain, ref.image, ref.token);
1798 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
1800 MonoAotModule *amodule = klass->image->aot_module;
1804 if (klass->rank || !amodule)
1807 p = (guint8*)&amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
1809 err = decode_cached_class_info (amodule, res, p, &p);
1817 * mono_aot_get_class_from_name:
1819 * Obtains a MonoClass with a given namespace and a given name which is located in IMAGE,
1820 * using a cache stored in the AOT file.
1821 * Stores the resulting class in *KLASS if found, stores NULL otherwise.
1823 * Returns: TRUE if the klass was found/not found in the cache, FALSE if no aot file was
1827 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
1829 MonoAotModule *amodule = image->aot_module;
1830 guint16 *table, *entry;
1833 char full_name_buf [1024];
1835 const char *name2, *name_space2;
1837 guint32 cols [MONO_TYPEDEF_SIZE];
1838 GHashTable *nspace_table;
1840 if (!amodule || !amodule->class_name_table)
1847 /* First look in the cache */
1848 if (!amodule->name_cache)
1849 amodule->name_cache = g_hash_table_new (g_str_hash, g_str_equal);
1850 nspace_table = g_hash_table_lookup (amodule->name_cache, name_space);
1852 *klass = g_hash_table_lookup (nspace_table, name);
1859 table_size = amodule->class_name_table [0];
1860 table = amodule->class_name_table + 1;
1862 if (name_space [0] == '\0')
1863 full_name = g_strdup_printf ("%s", name);
1865 if (strlen (name_space) + strlen (name) < 1000) {
1866 sprintf (full_name_buf, "%s.%s", name_space, name);
1867 full_name = full_name_buf;
1869 full_name = g_strdup_printf ("%s.%s", name_space, name);
1872 hash = mono_metadata_str_hash (full_name) % table_size;
1873 if (full_name != full_name_buf)
1876 entry = &table [hash * 2];
1878 if (entry [0] != 0) {
1879 t = &image->tables [MONO_TABLE_TYPEDEF];
1882 guint32 index = entry [0];
1883 guint32 next = entry [1];
1884 guint32 token = mono_metadata_make_token (MONO_TABLE_TYPEDEF, index);
1886 name_table_accesses ++;
1888 mono_metadata_decode_row (t, index - 1, cols, MONO_TYPEDEF_SIZE);
1890 name2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
1891 name_space2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
1893 if (!strcmp (name, name2) && !strcmp (name_space, name_space2)) {
1895 *klass = mono_class_get (image, token);
1900 nspace_table = g_hash_table_lookup (amodule->name_cache, name_space);
1901 if (!nspace_table) {
1902 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
1903 g_hash_table_insert (amodule->name_cache, (char*)name_space2, nspace_table);
1905 g_hash_table_insert (nspace_table, (char*)name2, *klass);
1912 entry = &table [next * 2];
1925 * decode_mono_eh_frame:
1927 * Decode the EH information emitted by our modified LLVM compiler and construct a
1928 * MonoJitInfo structure from it.
1929 * LOCKING: Acquires the domain lock.
1932 decode_llvm_mono_eh_frame (MonoAotModule *amodule, MonoDomain *domain,
1933 MonoMethod *method, guint8 *code,
1934 MonoJitExceptionInfo *clauses, int num_clauses,
1935 int extra_size, GSList **nesting,
1936 int *this_reg, int *this_offset)
1939 guint8 *fde, *cie, *code_start, *code_end;
1940 int version, fde_count;
1942 int i, j, pos, left, right, offset, offset1, offset2, code_len, func_encoding;
1943 MonoJitExceptionInfo *ei;
1944 guint32 fde_len, ei_len, nested_len, nindex;
1945 gpointer *type_info;
1947 MonoLLVMFDEInfo info;
1949 g_assert (amodule->mono_eh_frame);
1951 p = amodule->mono_eh_frame;
1953 /* p points to data emitted by LLVM in DwarfException::EmitMonoEHFrame () */
1957 g_assert (version == 1 || version == 2);
1963 func_encoding = DW_EH_PE_pcrel;
1965 p = ALIGN_PTR_TO (p, 4);
1967 fde_count = *(guint32*)p;
1971 /* There is +1 entry in the table */
1972 cie = p + ((fde_count + 1) * 8);
1974 /* Binary search in the table to find the entry for code */
1975 offset = code - amodule->mono_eh_frame;
1980 pos = (left + right) / 2;
1982 offset1 = table [(pos * 2)];
1983 if (pos + 1 == fde_count) {
1985 offset2 = amodule->code_end - amodule->code;
1987 /* Encoded as DW_EH_PE_pcrel, but relative to mono_eh_frame */
1988 offset2 = table [(pos + 1) * 2];
1991 if (func_encoding == DW_EH_PE_absptr) {
1993 * Encoded as DW_EH_PE_absptr, because the ios linker can move functions inside object files to make thumb work,
1994 * so the offsets between two symbols in the text segment are not assembler constant.
1996 g_assert (sizeof(gpointer) == 4);
1997 offset1 -= (gint32)(gsize)amodule->mono_eh_frame;
1998 offset2 -= (gint32)(gsize)amodule->mono_eh_frame;
2001 if (offset < offset1)
2003 else if (offset >= offset2)
2009 if (func_encoding == DW_EH_PE_absptr) {
2010 code_start = (gpointer)(gsize)table [(pos * 2)];
2011 code_end = (gpointer)(gsize)table [(pos * 2) + 2];
2013 code_start = amodule->mono_eh_frame + table [(pos * 2)];
2014 /* This won't overflow because there is +1 entry in the table */
2015 code_end = amodule->mono_eh_frame + table [(pos * 2) + 2];
2017 code_len = code_end - code_start;
2019 g_assert (code >= code_start && code < code_end);
2021 if (amodule->thumb_end && (guint8*)code_start < amodule->thumb_end)
2022 /* Clear thumb flag */
2023 code_start = (char*)(((mgreg_t)code_start) & ~1);
2025 fde = amodule->mono_eh_frame + table [(pos * 2) + 1];
2026 /* This won't overflow because there is +1 entry in the table */
2027 fde_len = table [(pos * 2) + 2 + 1] - table [(pos * 2) + 1];
2029 mono_unwind_decode_llvm_mono_fde (fde, fde_len, cie, code_start, &info);
2031 ei_len = info.ex_info_len;
2032 type_info = info.type_info;
2033 *this_reg = info.this_reg;
2034 *this_offset = info.this_offset;
2036 /* Count number of nested clauses */
2038 for (i = 0; i < ei_len; ++i) {
2039 /* This might be unaligned */
2040 gint32 cindex1 = read32 (type_info [i]);
2043 for (l = nesting [cindex1]; l; l = l->next) {
2044 gint32 nesting_cindex = GPOINTER_TO_INT (l->data);
2046 for (j = 0; j < ei_len; ++j) {
2047 gint32 cindex2 = read32 (type_info [j]);
2049 if (cindex2 == nesting_cindex)
2056 * LLVM might represent one IL region with multiple regions, so have to
2057 * allocate a new JI.
2060 mono_domain_alloc0 (domain, MONO_SIZEOF_JIT_INFO + (sizeof (MonoJitExceptionInfo) * (ei_len + nested_len)) + extra_size);
2062 jinfo->code_size = code_len;
2063 jinfo->used_regs = mono_cache_unwind_info (info.unw_info, info.unw_info_len);
2064 jinfo->method = method;
2065 jinfo->code_start = code;
2066 jinfo->domain_neutral = 0;
2067 /* This signals that used_regs points to a normal cached unwind info */
2068 jinfo->from_aot = 0;
2069 jinfo->num_clauses = ei_len + nested_len;
2071 for (i = 0; i < ei_len; ++i) {
2073 * orig_jinfo contains the original IL exception info saved by the AOT
2074 * compiler, we have to combine that with the information produced by LLVM
2076 /* The type_info entries contain IL clause indexes */
2077 int clause_index = read32 (type_info [i]);
2078 MonoJitExceptionInfo *jei = &jinfo->clauses [i];
2079 MonoJitExceptionInfo *orig_jei = &clauses [clause_index];
2081 g_assert (clause_index < num_clauses);
2082 jei->flags = orig_jei->flags;
2083 jei->data.catch_class = orig_jei->data.catch_class;
2085 jei->try_start = ei [i].try_start;
2086 jei->try_end = ei [i].try_end;
2087 jei->handler_start = ei [i].handler_start;
2089 /* Make sure we transition to thumb when a handler starts */
2090 if (amodule->thumb_end && (guint8*)jei->handler_start < amodule->thumb_end)
2091 jei->handler_start = (void*)((mgreg_t)jei->handler_start + 1);
2094 /* See exception_cb () in mini-llvm.c as to why this is needed */
2096 for (i = 0; i < ei_len; ++i) {
2097 gint32 cindex1 = read32 (type_info [i]);
2100 for (l = nesting [cindex1]; l; l = l->next) {
2101 gint32 nesting_cindex = GPOINTER_TO_INT (l->data);
2103 for (j = 0; j < ei_len; ++j) {
2104 gint32 cindex2 = read32 (type_info [j]);
2106 if (cindex2 == nesting_cindex) {
2108 * The try interval comes from the nested clause, everything else from the
2111 memcpy (&jinfo->clauses [nindex], &jinfo->clauses [j], sizeof (MonoJitExceptionInfo));
2112 jinfo->clauses [nindex].try_start = jinfo->clauses [i].try_start;
2113 jinfo->clauses [nindex].try_end = jinfo->clauses [i].try_end;
2119 g_assert (nindex == ei_len + nested_len);
2125 * LOCKING: Acquires the domain lock.
2128 decode_exception_debug_info (MonoAotModule *amodule, MonoDomain *domain,
2129 MonoMethod *method, guint8* ex_info, guint8 *addr,
2130 guint8 *code, guint32 code_len)
2132 int i, buf_len, num_clauses;
2134 guint used_int_regs, flags;
2135 gboolean has_generic_jit_info, has_dwarf_unwind_info, has_clauses, has_seq_points, has_try_block_holes, has_arch_eh_jit_info;
2136 gboolean from_llvm, has_gc_map;
2138 int generic_info_size, try_holes_info_size, num_holes, arch_eh_jit_info_size;
2139 int this_reg = 0, this_offset = 0;
2141 /* Load the method info from the AOT file */
2144 flags = decode_value (p, &p);
2145 has_generic_jit_info = (flags & 1) != 0;
2146 has_dwarf_unwind_info = (flags & 2) != 0;
2147 has_clauses = (flags & 4) != 0;
2148 has_seq_points = (flags & 8) != 0;
2149 from_llvm = (flags & 16) != 0;
2150 has_try_block_holes = (flags & 32) != 0;
2151 has_gc_map = (flags & 64) != 0;
2152 has_arch_eh_jit_info = (flags & 128) != 0;
2154 if (has_dwarf_unwind_info) {
2157 offset = decode_value (p, &p);
2158 g_assert (offset < (1 << 30));
2159 used_int_regs = offset;
2161 used_int_regs = decode_value (p, &p);
2163 if (has_generic_jit_info)
2164 generic_info_size = sizeof (MonoGenericJitInfo);
2166 generic_info_size = 0;
2168 if (has_try_block_holes) {
2169 num_holes = decode_value (p, &p);
2170 try_holes_info_size = sizeof (MonoTryBlockHoleTableJitInfo) + num_holes * sizeof (MonoTryBlockHoleJitInfo);
2172 num_holes = try_holes_info_size = 0;
2174 /* Exception table */
2176 num_clauses = decode_value (p, &p);
2179 if (has_arch_eh_jit_info)
2180 arch_eh_jit_info_size = sizeof (MonoArchEHJitInfo);
2182 arch_eh_jit_info_size = 0;
2185 MonoJitExceptionInfo *clauses;
2189 * Part of the info is encoded by the AOT compiler, the rest is in the .eh_frame
2192 clauses = g_new0 (MonoJitExceptionInfo, num_clauses);
2193 nesting = g_new0 (GSList*, num_clauses);
2195 for (i = 0; i < num_clauses; ++i) {
2196 MonoJitExceptionInfo *ei = &clauses [i];
2198 ei->flags = decode_value (p, &p);
2200 if (decode_value (p, &p))
2201 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
2203 /* Read the list of nesting clauses */
2205 int nesting_index = decode_value (p, &p);
2206 if (nesting_index == -1)
2208 nesting [i] = g_slist_prepend (nesting [i], GINT_TO_POINTER (nesting_index));
2212 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);
2213 jinfo->from_llvm = 1;
2216 for (i = 0; i < num_clauses; ++i)
2217 g_slist_free (nesting [i]);
2221 mono_domain_alloc0 (domain, MONO_SIZEOF_JIT_INFO + (sizeof (MonoJitExceptionInfo) * num_clauses) + generic_info_size + try_holes_info_size + arch_eh_jit_info_size);
2222 jinfo->num_clauses = num_clauses;
2224 for (i = 0; i < jinfo->num_clauses; ++i) {
2225 MonoJitExceptionInfo *ei = &jinfo->clauses [i];
2227 ei->flags = decode_value (p, &p);
2229 ei->exvar_offset = decode_value (p, &p);
2231 if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER || ei->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
2232 ei->data.filter = code + decode_value (p, &p);
2234 if (decode_value (p, &p))
2235 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
2238 ei->try_start = code + decode_value (p, &p);
2239 ei->try_end = code + decode_value (p, &p);
2240 ei->handler_start = code + decode_value (p, &p);
2243 jinfo->code_size = code_len;
2244 jinfo->used_regs = used_int_regs;
2245 jinfo->method = method;
2246 jinfo->code_start = code;
2247 jinfo->domain_neutral = 0;
2248 jinfo->from_aot = 1;
2251 if (has_generic_jit_info) {
2252 MonoGenericJitInfo *gi;
2254 jinfo->has_generic_jit_info = 1;
2256 gi = mono_jit_info_get_generic_jit_info (jinfo);
2259 gi->nlocs = decode_value (p, &p);
2261 gi->locations = mono_domain_alloc0 (domain, gi->nlocs * sizeof (MonoDwarfLocListEntry));
2262 for (i = 0; i < gi->nlocs; ++i) {
2263 MonoDwarfLocListEntry *entry = &gi->locations [i];
2265 entry->is_reg = decode_value (p, &p);
2266 entry->reg = decode_value (p, &p);
2268 entry->offset = decode_value (p, &p);
2270 entry->from = decode_value (p, &p);
2271 entry->to = decode_value (p, &p);
2275 gi->has_this = this_reg != -1;
2276 gi->this_reg = this_reg;
2277 gi->this_offset = this_offset;
2279 gi->has_this = decode_value (p, &p);
2280 gi->this_reg = decode_value (p, &p);
2281 gi->this_offset = decode_value (p, &p);
2285 /* This currently contains no data */
2286 gi->generic_sharing_context = g_new0 (MonoGenericSharingContext, 1);
2288 jinfo->method = decode_resolve_method_ref (amodule, p, &p);
2291 if (has_try_block_holes) {
2292 MonoTryBlockHoleTableJitInfo *table;
2294 jinfo->has_try_block_holes = 1;
2296 table = mono_jit_info_get_try_block_hole_table_info (jinfo);
2299 table->num_holes = (guint16)num_holes;
2300 for (i = 0; i < num_holes; ++i) {
2301 MonoTryBlockHoleJitInfo *hole = &table->holes [i];
2302 hole->clause = decode_value (p, &p);
2303 hole->length = decode_value (p, &p);
2304 hole->offset = decode_value (p, &p);
2308 if (has_arch_eh_jit_info) {
2309 MonoArchEHJitInfo *eh_info;
2311 jinfo->has_arch_eh_info = 1;
2313 eh_info = mono_jit_info_get_arch_eh_info (jinfo);
2314 eh_info->stack_size = decode_value (p, &p);
2317 if (has_seq_points) {
2318 MonoSeqPointInfo *seq_points;
2319 int il_offset, native_offset, last_il_offset, last_native_offset, j;
2321 int len = decode_value (p, &p);
2323 seq_points = g_malloc0 (sizeof (MonoSeqPointInfo) + (len - MONO_ZERO_LEN_ARRAY) * sizeof (SeqPoint));
2324 seq_points->len = len;
2325 last_il_offset = last_native_offset = 0;
2326 for (i = 0; i < len; ++i) {
2327 SeqPoint *sp = &seq_points->seq_points [i];
2328 il_offset = last_il_offset + decode_value (p, &p);
2329 native_offset = last_native_offset + decode_value (p, &p);
2331 sp->il_offset = il_offset;
2332 sp->native_offset = native_offset;
2334 sp->next_len = decode_value (p, &p);
2335 sp->next = g_new (int, sp->next_len);
2336 for (j = 0; j < sp->next_len; ++j)
2337 sp->next [j] = decode_value (p, &p);
2339 last_il_offset = il_offset;
2340 last_native_offset = native_offset;
2343 mono_domain_lock (domain);
2344 g_hash_table_insert (domain_jit_info (domain)->seq_points, method, seq_points);
2345 mono_domain_unlock (domain);
2348 /* Load debug info */
2349 buf_len = decode_value (p, &p);
2350 mono_debug_add_aot_method (domain, method, code, p, buf_len);
2354 int map_size = decode_value (p, &p);
2355 /* The GC map requires 4 bytes of alignment */
2356 while ((guint64)(gsize)p % 4)
2362 if (amodule != jinfo->method->klass->image->aot_module) {
2365 ji_to_amodule = g_hash_table_new (NULL, NULL);
2366 g_hash_table_insert (ji_to_amodule, jinfo, amodule);
2374 * mono_aot_get_unwind_info:
2376 * Return a pointer to the DWARF unwind info belonging to JI.
2379 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
2381 MonoAotModule *amodule = ji->method->klass->image->aot_module;
2383 guint8 *code = ji->code_start;
2386 g_assert (ji->from_aot);
2388 if (!(code >= amodule->code && code <= amodule->code_end)) {
2389 /* ji belongs to a different aot module than amodule */
2391 g_assert (ji_to_amodule);
2392 amodule = g_hash_table_lookup (ji_to_amodule, ji);
2394 g_assert (code >= amodule->code && code <= amodule->code_end);
2398 p = amodule->unwind_info + ji->used_regs;
2399 *unwind_info_len = decode_value (p, &p);
2403 static G_GNUC_UNUSED int
2404 compare_ints (const void *a, const void *b)
2406 return *(gint32*)a - *(gint32*)b;
2410 msort_code_offsets_internal (gint32 *array, int lo, int hi, gint32 *scratch)
2412 int mid = (lo + hi) / 2;
2419 for (i = lo; i < hi; ++i)
2420 if (array [(i * 2)] > array [(i * 2) + 2])
2423 /* Already sorted */
2427 msort_code_offsets_internal (array, lo, mid, scratch);
2428 msort_code_offsets_internal (array, mid + 1, hi, scratch);
2430 if (array [mid * 2] < array [(mid + 1) * 2])
2436 for (i = lo; i <= hi; i ++) {
2437 if (t_lo <= mid && ((t_hi > hi) || array [t_lo * 2] < array [t_hi * 2])) {
2438 scratch [(i * 2)] = array [t_lo * 2];
2439 scratch [(i * 2) + 1] = array [(t_lo *2) + 1];
2442 scratch [(i * 2)] = array [t_hi * 2];
2443 scratch [(i * 2) + 1] = array [(t_hi *2) + 1];
2447 for (i = lo; i <= hi; ++i) {
2448 array [(i * 2)] = scratch [i * 2];
2449 array [(i * 2) + 1] = scratch [(i * 2) + 1];
2454 msort_code_offsets (gint32 *array, int len)
2458 scratch = g_new (gint32, len * 2);
2459 msort_code_offsets_internal (array, 0, len - 1, scratch);
2464 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
2466 int pos, left, right, offset, offset1, offset2, code_len;
2467 int method_index, table_len, is_wrapper;
2469 MonoAotModule *amodule = image->aot_module;
2472 guint8 *code, *ex_info, *p;
2474 int nmethods = amodule->info.nmethods;
2475 gint32 *code_offsets;
2481 if (domain != mono_get_root_domain ())
2485 offset = (guint8*)addr - amodule->code;
2487 /* Compute a sorted table mapping code offsets to method indexes. */
2488 if (!amodule->sorted_code_offsets) {
2489 code_offsets = g_new0 (gint32, nmethods * 2);
2491 for (i = 0; i < nmethods; ++i) {
2492 /* Skip the -1 entries to speed up sorting */
2493 if (amodule->code_offsets [i] == 0xffffffff)
2495 code_offsets [(offsets_len * 2)] = amodule->code_offsets [i];
2496 code_offsets [(offsets_len *2) + 1] = i;
2499 /* Use a merge sort as this is mostly sorted */
2500 msort_code_offsets (code_offsets, offsets_len);
2501 //qsort (code_offsets, offsets_len, sizeof (gint32) * 2, compare_ints);
2502 for (i = 0; i < offsets_len -1; ++i)
2503 g_assert (code_offsets [(i * 2)] <= code_offsets [(i + 1) * 2]);
2505 if (InterlockedCompareExchangePointer ((gpointer*)&amodule->sorted_code_offsets, code_offsets, NULL) != NULL)
2506 /* Somebody got in before us */
2507 g_free (code_offsets);
2508 amodule->sorted_code_offsets_len = offsets_len;
2511 code_offsets = amodule->sorted_code_offsets;
2512 offsets_len = amodule->sorted_code_offsets_len;
2514 /* Binary search in the sorted_code_offsets table */
2516 right = offsets_len;
2518 pos = (left + right) / 2;
2520 offset1 = code_offsets [(pos * 2)];
2521 if (pos + 1 == offsets_len)
2522 offset2 = amodule->code_end - amodule->code;
2524 offset2 = code_offsets [(pos + 1) * 2];
2526 if (offset < offset1)
2528 else if (offset >= offset2)
2534 g_assert (offset >= code_offsets [(pos * 2)]);
2535 if (pos + 1 < offsets_len)
2536 g_assert (offset < code_offsets [((pos + 1) * 2)]);
2537 method_index = code_offsets [(pos * 2) + 1];
2539 code = &amodule->code [amodule->code_offsets [method_index]];
2540 ex_info = &amodule->blob [mono_aot_get_offset (amodule->ex_info_offsets, method_index)];
2542 if (pos == offsets_len - 1)
2543 code_len = amodule->code_end - code;
2545 code_len = code_offsets [(pos + 1) * 2] - code_offsets [pos * 2];
2547 g_assert ((guint8*)code <= (guint8*)addr && (guint8*)addr < (guint8*)code + code_len);
2549 /* Might be a wrapper/extra method */
2550 if (amodule->extra_methods) {
2552 method = g_hash_table_lookup (amodule->extra_methods, GUINT_TO_POINTER (method_index));
2559 if (method_index >= image->tables [MONO_TABLE_METHOD].rows) {
2561 * This is hit for extra methods which are called directly, so they are
2562 * not in amodule->extra_methods.
2564 table_len = amodule->extra_method_info_offsets [0];
2565 table = amodule->extra_method_info_offsets + 1;
2572 pos = ((left + right) / 2);
2574 g_assert (pos < table_len);
2576 if (table [pos * 2] < method_index)
2578 else if (table [pos * 2] > method_index)
2584 p = amodule->blob + table [(pos * 2) + 1];
2585 is_wrapper = decode_value (p, &p);
2586 g_assert (!is_wrapper);
2587 method = decode_resolve_method_ref (amodule, p, &p);
2590 token = mono_metadata_make_token (MONO_TABLE_METHOD, method_index + 1);
2591 method = mono_get_method (image, token, NULL);
2598 //printf ("F: %s\n", mono_method_full_name (method, TRUE));
2600 jinfo = decode_exception_debug_info (amodule, domain, method, ex_info, addr, code, code_len);
2602 g_assert ((guint8*)addr >= (guint8*)jinfo->code_start);
2603 g_assert ((guint8*)addr < (guint8*)jinfo->code_start + jinfo->code_size);
2605 /* Add it to the normal JitInfo tables */
2606 mono_jit_info_table_add (domain, jinfo);
2612 decode_patch (MonoAotModule *aot_module, MonoMemPool *mp, MonoJumpInfo *ji, guint8 *buf, guint8 **endbuf)
2620 case MONO_PATCH_INFO_METHOD:
2621 case MONO_PATCH_INFO_METHOD_JUMP:
2622 case MONO_PATCH_INFO_ICALL_ADDR:
2623 case MONO_PATCH_INFO_METHOD_RGCTX: {
2627 res = decode_method_ref (aot_module, &ref, p, &p);
2631 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)) {
2632 ji->data.target = mono_create_ftnptr (mono_domain_get (), mono_create_jit_trampoline_from_token (ref.image, ref.token));
2633 ji->type = MONO_PATCH_INFO_ABS;
2637 ji->data.method = ref.method;
2639 ji->data.method = mono_get_method (ref.image, ref.token, NULL);
2640 g_assert (ji->data.method);
2641 mono_class_init (ji->data.method->klass);
2645 case MONO_PATCH_INFO_INTERNAL_METHOD:
2646 case MONO_PATCH_INFO_JIT_ICALL_ADDR: {
2647 guint32 len = decode_value (p, &p);
2649 ji->data.name = (char*)p;
2653 case MONO_PATCH_INFO_METHODCONST:
2655 ji->data.method = decode_resolve_method_ref (aot_module, p, &p);
2656 if (!ji->data.method)
2659 case MONO_PATCH_INFO_VTABLE:
2660 case MONO_PATCH_INFO_CLASS:
2661 case MONO_PATCH_INFO_IID:
2662 case MONO_PATCH_INFO_ADJUSTED_IID:
2664 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2665 if (!ji->data.klass)
2668 case MONO_PATCH_INFO_CLASS_INIT:
2669 case MONO_PATCH_INFO_DELEGATE_TRAMPOLINE:
2670 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2671 if (!ji->data.klass)
2674 case MONO_PATCH_INFO_IMAGE:
2675 ji->data.image = load_image (aot_module, decode_value (p, &p), TRUE);
2676 if (!ji->data.image)
2679 case MONO_PATCH_INFO_FIELD:
2680 case MONO_PATCH_INFO_SFLDA:
2682 ji->data.field = decode_field_info (aot_module, p, &p);
2683 if (!ji->data.field)
2686 case MONO_PATCH_INFO_SWITCH:
2687 ji->data.table = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoBBTable));
2688 ji->data.table->table_size = decode_value (p, &p);
2689 table = mono_domain_alloc (mono_domain_get (), sizeof (gpointer) * ji->data.table->table_size);
2690 ji->data.table->table = (MonoBasicBlock**)table;
2691 for (i = 0; i < ji->data.table->table_size; i++)
2692 table [i] = (gpointer)(gssize)decode_value (p, &p);
2694 case MONO_PATCH_INFO_R4: {
2697 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (float));
2698 val = decode_value (p, &p);
2699 *(float*)ji->data.target = *(float*)&val;
2702 case MONO_PATCH_INFO_R8: {
2706 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (double));
2708 val [0] = decode_value (p, &p);
2709 val [1] = decode_value (p, &p);
2710 v = ((guint64)val [1] << 32) | ((guint64)val [0]);
2711 *(double*)ji->data.target = *(double*)&v;
2714 case MONO_PATCH_INFO_LDSTR:
2715 image = load_image (aot_module, decode_value (p, &p), TRUE);
2718 ji->data.token = mono_jump_info_token_new (mp, image, MONO_TOKEN_STRING + decode_value (p, &p));
2720 case MONO_PATCH_INFO_RVA:
2721 case MONO_PATCH_INFO_DECLSEC:
2722 case MONO_PATCH_INFO_LDTOKEN:
2723 case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
2725 image = load_image (aot_module, decode_value (p, &p), TRUE);
2728 ji->data.token = mono_jump_info_token_new (mp, image, decode_value (p, &p));
2730 ji->data.token->has_context = decode_value (p, &p);
2731 if (ji->data.token->has_context) {
2732 gboolean res = decode_generic_context (aot_module, &ji->data.token->context, p, &p);
2737 case MONO_PATCH_INFO_EXC_NAME:
2738 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2739 if (!ji->data.klass)
2741 ji->data.name = ji->data.klass->name;
2743 case MONO_PATCH_INFO_METHOD_REL:
2744 ji->data.offset = decode_value (p, &p);
2746 case MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG:
2747 case MONO_PATCH_INFO_GENERIC_CLASS_INIT:
2748 case MONO_PATCH_INFO_MONITOR_ENTER:
2749 case MONO_PATCH_INFO_MONITOR_EXIT:
2750 case MONO_PATCH_INFO_GC_CARD_TABLE_ADDR:
2751 case MONO_PATCH_INFO_CASTCLASS_CACHE:
2753 case MONO_PATCH_INFO_RGCTX_FETCH: {
2755 MonoJumpInfoRgctxEntry *entry;
2756 guint32 offset, val;
2759 offset = decode_value (p, &p);
2760 val = decode_value (p, &p);
2762 entry = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
2763 p2 = aot_module->blob + offset;
2764 entry->method = decode_resolve_method_ref (aot_module, p2, &p2);
2765 entry->in_mrgctx = ((val & 1) > 0) ? TRUE : FALSE;
2766 entry->info_type = (val >> 1) & 0xff;
2767 entry->data = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
2768 entry->data->type = (val >> 9) & 0xff;
2770 res = decode_patch (aot_module, mp, entry->data, p, &p);
2773 ji->data.rgctx_entry = entry;
2776 case MONO_PATCH_INFO_SEQ_POINT_INFO:
2778 case MONO_PATCH_INFO_LLVM_IMT_TRAMPOLINE: {
2779 MonoJumpInfoImtTramp *imt_tramp = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoImtTramp));
2781 imt_tramp->method = decode_resolve_method_ref (aot_module, p, &p);
2782 imt_tramp->vt_offset = decode_value (p, &p);
2784 ji->data.imt_tramp = imt_tramp;
2787 case MONO_PATCH_INFO_SIGNATURE:
2788 ji->data.target = decode_signature (aot_module, p, &p);
2791 g_warning ("unhandled type %d", ji->type);
2792 g_assert_not_reached ();
2803 static MonoJumpInfo*
2804 load_patch_info (MonoAotModule *aot_module, MonoMemPool *mp, int n_patches,
2805 guint32 **got_slots,
2806 guint8 *buf, guint8 **endbuf)
2808 MonoJumpInfo *patches;
2814 patches = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo) * n_patches);
2816 *got_slots = g_malloc (sizeof (guint32) * n_patches);
2818 for (pindex = 0; pindex < n_patches; ++pindex) {
2819 MonoJumpInfo *ji = &patches [pindex];
2824 got_offset = decode_value (p, &p);
2826 if (aot_module->got [got_offset]) {
2827 /* Already loaded */
2828 //printf ("HIT!\n");
2830 shared_p = aot_module->blob + mono_aot_get_offset (aot_module->got_info_offsets, got_offset);
2832 ji->type = decode_value (shared_p, &shared_p);
2834 res = decode_patch (aot_module, mp, ji, shared_p, &shared_p);
2839 (*got_slots) [pindex] = got_offset;
2846 g_free (*got_slots);
2853 register_jump_target_got_slot (MonoDomain *domain, MonoMethod *method, gpointer *got_slot)
2856 * Jump addresses cannot be patched by the trampoline code since it
2857 * does not have access to the caller's address. Instead, we collect
2858 * the addresses of the GOT slots pointing to a method, and patch
2859 * them after the method has been compiled.
2861 MonoJitDomainInfo *info = domain_jit_info (domain);
2864 mono_domain_lock (domain);
2865 if (!info->jump_target_got_slot_hash)
2866 info->jump_target_got_slot_hash = g_hash_table_new (NULL, NULL);
2867 list = g_hash_table_lookup (info->jump_target_got_slot_hash, method);
2868 list = g_slist_prepend (list, got_slot);
2869 g_hash_table_insert (info->jump_target_got_slot_hash, method, list);
2870 mono_domain_unlock (domain);
2876 * Load the method identified by METHOD_INDEX from the AOT image. Return a
2877 * pointer to the native code of the method, or NULL if not found.
2878 * METHOD might not be set if the caller only has the image/token info.
2881 load_method (MonoDomain *domain, MonoAotModule *amodule, MonoImage *image, MonoMethod *method, guint32 token, int method_index)
2884 gboolean from_plt = method == NULL;
2886 int i, pindex, n_patches, used_strings;
2887 gboolean keep_patches = TRUE;
2889 MonoJitInfo *jinfo = NULL;
2890 guint8 *code, *info;
2892 if (mono_profiler_get_events () & MONO_PROFILE_ENTER_LEAVE)
2895 if ((domain != mono_get_root_domain ()) && (!(amodule->info.opts & MONO_OPT_SHARED)))
2896 /* Non shared AOT code can't be used in other appdomains */
2899 if (amodule->out_of_date)
2902 if (amodule->code_offsets [method_index] == 0xffffffff) {
2903 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
2907 method = mono_get_method (image, token, NULL);
2908 full_name = mono_method_full_name (method, TRUE);
2909 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.\n", full_name);
2915 code = &amodule->code [amodule->code_offsets [method_index]];
2917 info = &amodule->blob [mono_aot_get_offset (amodule->method_info_offsets, method_index)];
2919 if (amodule->thumb_end && code < amodule->thumb_end) {
2920 /* Convert this into a thumb address */
2921 g_assert ((amodule->code_offsets [method_index] & 0x1) == 0);
2922 code = &amodule->code [amodule->code_offsets [method_index] + 1];
2926 if (!amodule->methods_loaded)
2927 amodule->methods_loaded = g_new0 (guint32, amodule->info.nmethods / 32 + 1);
2930 if ((amodule->methods_loaded [method_index / 32] >> (method_index % 32)) & 0x1)
2933 if (mono_last_aot_method != -1) {
2934 if (mono_jit_stats.methods_aot >= mono_last_aot_method)
2936 else if (mono_jit_stats.methods_aot == mono_last_aot_method - 1) {
2938 method = mono_get_method (image, token, NULL);
2940 char *name = mono_method_full_name (method, TRUE);
2941 printf ("LAST AOT METHOD: %s.\n", name);
2944 printf ("LAST AOT METHOD: %p %d\n", code, method_index);
2952 klass = method->klass;
2953 decode_klass_ref (amodule, p, &p);
2955 klass = decode_klass_ref (amodule, p, &p);
2958 if (amodule->info.opts & MONO_OPT_SHARED)
2959 used_strings = decode_value (p, &p);
2963 for (i = 0; i < used_strings; i++) {
2964 guint token = decode_value (p, &p);
2965 mono_ldstr (mono_get_root_domain (), image, mono_metadata_token_index (token));
2968 if (amodule->info.opts & MONO_OPT_SHARED)
2969 keep_patches = FALSE;
2971 n_patches = decode_value (p, &p);
2973 keep_patches = FALSE;
2976 MonoJumpInfo *patches;
2982 mp = mono_mempool_new ();
2984 patches = load_patch_info (amodule, mp, n_patches, &got_slots, p, &p);
2985 if (patches == NULL)
2988 for (pindex = 0; pindex < n_patches; ++pindex) {
2989 MonoJumpInfo *ji = &patches [pindex];
2991 if (!amodule->got [got_slots [pindex]]) {
2992 amodule->got [got_slots [pindex]] = mono_resolve_patch_target (method, domain, code, ji, TRUE);
2993 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
2994 amodule->got [got_slots [pindex]] = mono_create_ftnptr (domain, amodule->got [got_slots [pindex]]);
2995 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
2996 register_jump_target_got_slot (domain, ji->data.method, &(amodule->got [got_slots [pindex]]));
2998 ji->type = MONO_PATCH_INFO_NONE;
3004 mono_mempool_destroy (mp);
3007 if (mini_get_debug_options ()->load_aot_jit_info_eagerly)
3008 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
3010 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
3014 method = mono_get_method (image, token, NULL);
3016 full_name = mono_method_full_name (method, TRUE);
3019 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
3021 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);
3027 InterlockedIncrement (&mono_jit_stats.methods_aot);
3029 amodule->methods_loaded [method_index / 32] |= 1 << (method_index % 32);
3033 if (method && method->wrapper_type)
3034 g_hash_table_insert (amodule->method_to_code, method, code);
3038 if (mono_profiler_get_events () & MONO_PROFILE_JIT_COMPILATION) {
3042 method = mono_get_method (image, token, NULL);
3045 mono_profiler_method_jit (method);
3046 jinfo = mono_jit_info_table_find (domain, (char*)code);
3048 mono_profiler_method_end_jit (method, jinfo, MONO_PROFILE_OK);
3051 if (from_plt && klass && !klass->generic_container)
3052 mono_runtime_class_init (mono_class_vtable (domain, klass));
3057 /* FIXME: The space in domain->mp is wasted */
3058 if (amodule->info.opts & MONO_OPT_SHARED)
3059 /* No need to cache patches */
3060 mono_mempool_destroy (mp);
3069 find_extra_method_in_amodule (MonoAotModule *amodule, MonoMethod *method, const char *name)
3071 guint32 table_size, entry_size, hash;
3072 guint32 *table, *entry;
3074 static guint32 n_extra_decodes;
3076 if (!amodule || amodule->out_of_date)
3079 table_size = amodule->extra_method_table [0];
3080 table = amodule->extra_method_table + 1;
3083 hash = mono_aot_method_hash (method) % table_size;
3085 entry = &table [hash * entry_size];
3092 guint32 key = entry [0];
3093 guint32 value = entry [1];
3094 guint32 next = entry [entry_size - 1];
3098 p = amodule->blob + key;
3102 if (!amodule->method_ref_to_method)
3103 amodule->method_ref_to_method = g_hash_table_new (NULL, NULL);
3104 m = g_hash_table_lookup (amodule->method_ref_to_method, p);
3107 m = decode_resolve_method_ref_with_target (amodule, method, p, &p);
3110 g_hash_table_insert (amodule->method_ref_to_method, orig_p, m);
3119 /* Special case: wrappers of shared generic methods */
3120 if (m && method->wrapper_type && m->wrapper_type == m->wrapper_type &&
3121 method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
3122 MonoMethod *w1 = mono_marshal_method_from_wrapper (method);
3123 MonoMethod *w2 = mono_marshal_method_from_wrapper (m);
3125 if (w1->is_inflated && ((MonoMethodInflated *)w1)->declaring == w2) {
3131 /* Methods decoded needlessly */
3133 //printf ("%d %s %s %p\n", n_extra_decodes, mono_method_full_name (method, TRUE), mono_method_full_name (m, TRUE), orig_p);
3138 entry = &table [next * entry_size];
3147 add_module_cb (gpointer key, gpointer value, gpointer user_data)
3149 g_ptr_array_add ((GPtrArray*)user_data, value);
3153 * find_extra_method:
3155 * Try finding METHOD in the extra_method table in all AOT images.
3156 * Return its method index, or 0xffffff if not found. Set OUT_AMODULE to the AOT
3157 * module where the method was found.
3160 find_extra_method (MonoMethod *method, MonoAotModule **out_amodule)
3167 if (method->wrapper_type)
3168 name = mono_aot_wrapper_name (method);
3170 /* Try the method's module first */
3171 *out_amodule = method->klass->image->aot_module;
3172 index = find_extra_method_in_amodule (method->klass->image->aot_module, method, name);
3173 if (index != 0xffffff) {
3179 * Try all other modules.
3180 * This is needed because generic instances klass->image points to the image
3181 * containing the generic definition, but the native code is generated to the
3182 * AOT image which contains the reference.
3185 /* Make a copy to avoid doing the search inside the aot lock */
3186 modules = g_ptr_array_new ();
3188 g_hash_table_foreach (aot_modules, add_module_cb, modules);
3192 for (i = 0; i < modules->len; ++i) {
3193 MonoAotModule *amodule = g_ptr_array_index (modules, i);
3195 if (amodule != method->klass->image->aot_module)
3196 index = find_extra_method_in_amodule (amodule, method, name);
3197 if (index != 0xffffff) {
3198 *out_amodule = amodule;
3203 g_ptr_array_free (modules, TRUE);
3210 * mono_aot_get_method:
3212 * Return a pointer to the AOTed native code for METHOD if it can be found,
3214 * On platforms with function pointers, this doesn't return a function pointer.
3217 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
3219 MonoClass *klass = method->klass;
3220 guint32 method_index;
3221 MonoAotModule *amodule = klass->image->aot_module;
3227 if (amodule->out_of_date)
3230 if ((method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
3231 (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
3232 (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
3233 (method->flags & METHOD_ATTRIBUTE_ABSTRACT))
3237 * Use the original method instead of its invoke-with-check wrapper.
3238 * This is not a problem when using full-aot, since it doesn't support
3241 if (mono_aot_only && method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)
3242 return mono_aot_get_method (domain, mono_marshal_method_from_wrapper (method));
3244 g_assert (klass->inited);
3246 /* Find method index */
3247 if (method->is_inflated && mono_method_is_generic_sharable_impl_full (method, FALSE, FALSE)) {
3249 * For generic methods, we store the fully shared instance in place of the
3252 method = mono_method_get_declaring_generic_method (method);
3253 method_index = mono_metadata_token_index (method->token) - 1;
3254 } else if (method->is_inflated || !method->token) {
3255 /* This hash table is used to avoid the slower search in the extra_method_table in the AOT image */
3257 code = g_hash_table_lookup (amodule->method_to_code, method);
3262 method_index = find_extra_method (method, &amodule);
3264 * Special case the ICollection<T> wrappers for arrays, as they cannot
3265 * be statically enumerated, and each wrapper ends up calling the same
3268 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED && method->klass->rank && strstr (method->name, "System.Collections.Generic")) {
3269 MonoMethod *m = mono_aot_get_array_helper_from_wrapper (method);
3271 code = mono_aot_get_method (domain, m);
3273 if (mono_method_needs_static_rgctx_invoke (m, FALSE)) {
3274 code = mono_create_static_rgctx_trampoline (m, mono_create_ftnptr (domain, code));
3275 /* The call above returns an ftnptr */
3276 code = mono_get_addr_from_ftnptr (code);
3284 * Special case Array.GetGenericValueImpl which is a generic icall.
3285 * Generic sharing currently can't handle it, but the icall returns data using
3286 * an out parameter, so the managed-to-native wrappers can share the same code.
3288 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass == mono_defaults.array_class && !strcmp (method->name, "GetGenericValueImpl")) {
3290 MonoGenericContext ctx;
3291 MonoType *args [16];
3293 if (mono_method_signature (method)->params [1]->type == MONO_TYPE_OBJECT)
3294 /* Avoid recursion */
3297 m = mono_class_get_method_from_name (mono_defaults.array_class, "GetGenericValueImpl", 2);
3300 memset (&ctx, 0, sizeof (ctx));
3301 args [0] = &mono_defaults.object_class->byval_arg;
3302 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
3304 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method (m, &ctx), TRUE, TRUE);
3307 * Get the code for the <object> instantiation which should be emitted into
3308 * the mscorlib aot image by the AOT compiler.
3310 code = mono_aot_get_method (domain, m);
3315 /* Same for CompareExchange<T> and Exchange<T> */
3316 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])) {
3318 MonoGenericContext ctx;
3319 MonoType *args [16];
3320 gpointer iter = NULL;
3322 while ((m = mono_class_get_methods (method->klass, &iter))) {
3323 if (mono_method_signature (m)->generic_param_count && !strcmp (m->name, method->name))
3328 memset (&ctx, 0, sizeof (ctx));
3329 args [0] = &mono_defaults.object_class->byval_arg;
3330 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
3332 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method (m, &ctx), TRUE, TRUE);
3334 /* Avoid recursion */
3339 * Get the code for the <object> instantiation which should be emitted into
3340 * the mscorlib aot image by the AOT compiler.
3342 code = mono_aot_get_method (domain, m);
3347 if (method_index == 0xffffff && method->is_inflated && mono_method_is_generic_sharable_impl_full (method, FALSE, TRUE)) {
3348 /* Partial sharing */
3349 method_index = find_extra_method (mini_get_shared_method (method), &amodule);
3352 if (method_index == 0xffffff) {
3353 if (mono_aot_only && mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
3356 full_name = mono_method_full_name (method, TRUE);
3357 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.\n", full_name);
3363 if (method_index == 0xffffff)
3366 /* Needed by find_jit_info */
3368 if (!amodule->extra_methods)
3369 amodule->extra_methods = g_hash_table_new (NULL, NULL);
3370 g_hash_table_insert (amodule->extra_methods, GUINT_TO_POINTER (method_index), method);
3374 method_index = mono_metadata_token_index (method->token) - 1;
3377 return load_method (domain, amodule, klass->image, method, method->token, method_index);
3381 * Same as mono_aot_get_method, but we try to avoid loading any metadata from the
3385 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
3387 MonoAotModule *aot_module = image->aot_module;
3393 method_index = mono_metadata_token_index (token) - 1;
3395 return load_method (domain, aot_module, image, NULL, token, method_index);
3401 } IsGotEntryUserData;
3404 check_is_got_entry (gpointer key, gpointer value, gpointer user_data)
3406 IsGotEntryUserData *data = (IsGotEntryUserData*)user_data;
3407 MonoAotModule *aot_module = (MonoAotModule*)value;
3409 if (aot_module->got && (data->addr >= (guint8*)(aot_module->got)) && (data->addr < (guint8*)(aot_module->got + aot_module->info.got_size)))
3414 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
3416 IsGotEntryUserData user_data;
3421 user_data.addr = addr;
3422 user_data.res = FALSE;
3424 g_hash_table_foreach (aot_modules, check_is_got_entry, &user_data);
3427 return user_data.res;
3432 MonoAotModule *module;
3433 } FindAotModuleUserData;
3436 find_aot_module_cb (gpointer key, gpointer value, gpointer user_data)
3438 FindAotModuleUserData *data = (FindAotModuleUserData*)user_data;
3439 MonoAotModule *aot_module = (MonoAotModule*)value;
3441 if ((data->addr >= (guint8*)(aot_module->code)) && (data->addr < (guint8*)(aot_module->code_end)))
3442 data->module = aot_module;
3445 static inline MonoAotModule*
3446 find_aot_module (guint8 *code)
3448 FindAotModuleUserData user_data;
3453 /* Reading these need no locking */
3454 if (((gsize)code < aot_code_low_addr) || ((gsize)code > aot_code_high_addr))
3457 user_data.addr = code;
3458 user_data.module = NULL;
3461 g_hash_table_foreach (aot_modules, find_aot_module_cb, &user_data);
3464 return user_data.module;
3468 mono_aot_patch_plt_entry (guint8 *code, gpointer *got, mgreg_t *regs, guint8 *addr)
3471 * Since AOT code is only used in the root domain,
3472 * mono_domain_get () != mono_get_root_domain () means the calling method
3473 * is AppDomain:InvokeInDomain, so this is the same check as in
3474 * mono_method_same_domain () but without loading the metadata for the method.
3476 if (mono_domain_get () == mono_get_root_domain ())
3477 mono_arch_patch_plt_entry (code, got, regs, addr);
3481 * mono_aot_plt_resolve:
3483 * This function is called by the entries in the PLT to resolve the actual method that
3484 * needs to be called. It returns a trampoline to the method and patches the PLT entry.
3485 * Returns NULL if the something cannot be loaded.
3488 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
3490 #ifdef MONO_ARCH_AOT_SUPPORTED
3491 guint8 *p, *target, *plt_entry;
3493 MonoAotModule *module = (MonoAotModule*)aot_module;
3494 gboolean res, no_ftnptr = FALSE;
3497 //printf ("DYN: %p %d\n", aot_module, plt_info_offset);
3499 p = &module->blob [plt_info_offset];
3501 ji.type = decode_value (p, &p);
3503 mp = mono_mempool_new_size (512);
3504 res = decode_patch (module, mp, &ji, p, &p);
3507 mono_mempool_destroy (mp);
3512 * Avoid calling resolve_patch_target in the full-aot case if possible, since
3513 * it would create a trampoline, and we don't need that.
3514 * We could do this only if the method does not need the special handling
3515 * in mono_magic_trampoline ().
3517 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) &&
3518 !mono_method_needs_static_rgctx_invoke (ji.data.method, FALSE)) {
3519 target = mono_jit_compile_method (ji.data.method);
3522 target = mono_resolve_patch_target (NULL, mono_domain_get (), NULL, &ji, TRUE);
3526 * The trampoline expects us to return a function descriptor on platforms which use
3527 * it, but resolve_patch_target returns a direct function pointer for some type of
3528 * patches, so have to translate between the two.
3529 * FIXME: Clean this up, but how ?
3531 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) {
3532 /* These should already have a function descriptor */
3533 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3534 /* Our function descriptors have a 0 environment, gcc created ones don't */
3535 if (ji.type != MONO_PATCH_INFO_INTERNAL_METHOD && ji.type != MONO_PATCH_INFO_JIT_ICALL_ADDR && ji.type != MONO_PATCH_INFO_ICALL_ADDR)
3536 g_assert (((gpointer*)target) [2] == 0);
3539 } else if (!no_ftnptr) {
3540 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3541 g_assert (((gpointer*)target) [2] != 0);
3543 target = mono_create_ftnptr (mono_domain_get (), target);
3546 mono_mempool_destroy (mp);
3548 /* Patch the PLT entry with target which might be the actual method not a trampoline */
3549 plt_entry = mono_aot_get_plt_entry (code);
3550 g_assert (plt_entry);
3551 mono_aot_patch_plt_entry (plt_entry, module->got, NULL, target);
3555 g_assert_not_reached ();
3563 * Initialize the PLT table of the AOT module. Called lazily when the first AOT
3564 * method in the module is loaded to avoid committing memory by writing to it.
3565 * LOCKING: Assumes the AOT lock is held.
3568 init_plt (MonoAotModule *amodule)
3573 if (amodule->plt_inited)
3576 tramp = mono_create_specific_trampoline (amodule, MONO_TRAMPOLINE_AOT_PLT, mono_get_root_domain (), NULL);
3579 * Initialize the PLT entries in the GOT to point to the default targets.
3582 tramp = mono_create_ftnptr (mono_domain_get (), tramp);
3583 for (i = 1; i < amodule->info.plt_size; ++i)
3584 /* All the default entries point to the AOT trampoline */
3585 ((gpointer*)amodule->got)[amodule->info.plt_got_offset_base + i] = tramp;
3587 amodule->plt_inited = TRUE;
3591 * mono_aot_get_plt_entry:
3593 * Return the address of the PLT entry called by the code at CODE if exists.
3596 mono_aot_get_plt_entry (guint8 *code)
3598 MonoAotModule *amodule = find_aot_module (code);
3599 guint8 *target = NULL;
3605 if (amodule->thumb_end && code < amodule->thumb_end) {
3606 return mono_arm_get_thumb_plt_entry (code);
3610 #ifdef MONO_ARCH_AOT_SUPPORTED
3611 target = mono_arch_get_call_target (code);
3613 g_assert_not_reached ();
3616 if ((target >= (guint8*)(amodule->plt)) && (target < (guint8*)(amodule->plt_end)))
3623 * mono_aot_get_plt_info_offset:
3625 * Return the PLT info offset belonging to the plt entry called by CODE.
3628 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
3630 guint8 *plt_entry = mono_aot_get_plt_entry (code);
3632 g_assert (plt_entry);
3634 /* The offset is embedded inside the code after the plt entry */
3635 #ifdef MONO_ARCH_AOT_SUPPORTED
3636 return mono_arch_get_plt_info_offset (plt_entry, regs, code);
3638 g_assert_not_reached ();
3644 mono_create_ftnptr_malloc (guint8 *code)
3646 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3647 MonoPPCFunctionDescriptor *ftnptr = g_malloc0 (sizeof (MonoPPCFunctionDescriptor));
3649 ftnptr->code = code;
3660 * mono_aot_register_jit_icall:
3662 * Register a JIT icall which is called by trampolines in full-aot mode. This should
3663 * be called from mono_arch_init () during startup.
3666 mono_aot_register_jit_icall (const char *name, gpointer addr)
3668 /* No need for locking */
3669 if (!aot_jit_icall_hash)
3670 aot_jit_icall_hash = g_hash_table_new (g_str_hash, g_str_equal);
3671 g_hash_table_insert (aot_jit_icall_hash, (char*)name, addr);
3677 * Load the function named NAME from the aot image.
3680 load_function (MonoAotModule *amodule, const char *name)
3684 int n_patches, pindex;
3690 symbol = g_strdup_printf ("%s", name);
3691 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&code);
3694 g_error ("Symbol '%s' not found in AOT file '%s'.\n", name, amodule->aot_name);
3696 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT FOUND function '%s' in AOT file '%s'.\n", name, amodule->aot_name);
3700 symbol = g_strdup_printf ("%s_p", name);
3701 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&p);
3704 /* Nothing to patch */
3707 p = amodule->blob + *(guint32*)p;
3709 /* Similar to mono_aot_load_method () */
3711 n_patches = decode_value (p, &p);
3714 MonoJumpInfo *patches;
3717 mp = mono_mempool_new ();
3719 patches = load_patch_info (amodule, mp, n_patches, &got_slots, p, &p);
3722 for (pindex = 0; pindex < n_patches; ++pindex) {
3723 MonoJumpInfo *ji = &patches [pindex];
3726 if (amodule->got [got_slots [pindex]])
3730 * When this code is executed, the runtime may not be initalized yet, so
3731 * resolve the patch info by hand.
3733 if (ji->type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
3734 if (!strcmp (ji->data.name, "mono_get_lmf_addr")) {
3735 target = mono_get_lmf_addr;
3736 } else if (!strcmp (ji->data.name, "mono_thread_force_interruption_checkpoint")) {
3737 target = mono_thread_force_interruption_checkpoint;
3738 } else if (!strcmp (ji->data.name, "mono_exception_from_token")) {
3739 target = mono_exception_from_token;
3740 } else if (!strcmp (ji->data.name, "mono_throw_exception")) {
3741 target = mono_get_throw_exception ();
3742 } else if (strstr (ji->data.name, "trampoline_func_") == ji->data.name) {
3743 int tramp_type2 = atoi (ji->data.name + strlen ("trampoline_func_"));
3744 target = (gpointer)mono_get_trampoline_func (tramp_type2);
3745 } else if (strstr (ji->data.name, "specific_trampoline_lazy_fetch_") == ji->data.name) {
3746 /* atoll is needed because the the offset is unsigned */
3750 res = sscanf (ji->data.name, "specific_trampoline_lazy_fetch_%u", &slot);
3751 g_assert (res == 1);
3752 target = mono_create_specific_trampoline (GUINT_TO_POINTER (slot), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, mono_get_root_domain (), NULL);
3753 target = mono_create_ftnptr_malloc (target);
3754 } else if (!strcmp (ji->data.name, "specific_trampoline_monitor_enter")) {
3755 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_MONITOR_ENTER, mono_get_root_domain (), NULL);
3756 target = mono_create_ftnptr_malloc (target);
3757 } else if (!strcmp (ji->data.name, "specific_trampoline_monitor_exit")) {
3758 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_MONITOR_EXIT, mono_get_root_domain (), NULL);
3759 target = mono_create_ftnptr_malloc (target);
3760 } else if (!strcmp (ji->data.name, "specific_trampoline_generic_class_init")) {
3761 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_GENERIC_CLASS_INIT, mono_get_root_domain (), NULL);
3762 target = mono_create_ftnptr_malloc (target);
3763 } else if (!strcmp (ji->data.name, "mono_thread_get_and_clear_pending_exception")) {
3764 target = mono_thread_get_and_clear_pending_exception;
3765 } else if (strstr (ji->data.name, "generic_trampoline_")) {
3766 target = mono_aot_get_trampoline (ji->data.name);
3767 } else if (aot_jit_icall_hash && g_hash_table_lookup (aot_jit_icall_hash, ji->data.name)) {
3768 /* Registered by mono_arch_init () */
3769 target = g_hash_table_lookup (aot_jit_icall_hash, ji->data.name);
3771 fprintf (stderr, "Unknown relocation '%s'\n", ji->data.name);
3772 g_assert_not_reached ();
3776 /* Hopefully the code doesn't have patches which need method or
3779 target = mono_resolve_patch_target (NULL, NULL, code, ji, FALSE);
3783 amodule->got [got_slots [pindex]] = target;
3788 mono_mempool_destroy (mp);
3795 * Return the trampoline identified by NAME from the mscorlib AOT file.
3796 * On ppc64, this returns a function descriptor.
3799 mono_aot_get_trampoline (const char *name)
3802 MonoAotModule *amodule;
3804 image = mono_defaults.corlib;
3807 amodule = image->aot_module;
3810 return mono_create_ftnptr_malloc (load_function (amodule, name));
3813 /* Return a given kind of trampoline */
3815 get_numerous_trampoline (MonoAotTrampoline tramp_type, int n_got_slots, MonoAotModule **out_amodule, guint32 *got_offset, guint32 *out_tramp_size)
3817 MonoAotModule *amodule;
3818 int index, tramp_size;
3821 /* Currently, we keep all trampolines in the mscorlib AOT image */
3822 image = mono_defaults.corlib;
3827 amodule = image->aot_module;
3830 *out_amodule = amodule;
3832 if (amodule->trampoline_index [tramp_type] == amodule->info.num_trampolines [tramp_type])
3833 g_error ("Ran out of trampolines of type %d in '%s' (%d)\n", tramp_type, image->name, amodule->info.num_trampolines [tramp_type]);
3835 index = amodule->trampoline_index [tramp_type] ++;
3839 *got_offset = amodule->info.trampoline_got_offset_base [tramp_type] + (index * n_got_slots);
3841 tramp_size = amodule->info.trampoline_size [tramp_type];
3844 *out_tramp_size = tramp_size;
3846 return amodule->trampolines [tramp_type] + (index * tramp_size);
3850 * Return a specific trampoline from the AOT file.
3853 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
3855 MonoAotModule *amodule;
3856 guint32 got_offset, tramp_size;
3857 guint8 *code, *tramp;
3858 static gpointer generic_trampolines [MONO_TRAMPOLINE_NUM];
3859 static gboolean inited;
3860 static guint32 num_trampolines;
3866 mono_counters_register ("Specific trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &num_trampolines);
3875 if (!generic_trampolines [tramp_type]) {
3878 symbol = mono_get_generic_trampoline_name (tramp_type);
3879 generic_trampolines [tramp_type] = mono_aot_get_trampoline (symbol);
3883 tramp = generic_trampolines [tramp_type];
3886 code = get_numerous_trampoline (MONO_AOT_TRAMP_SPECIFIC, 2, &amodule, &got_offset, &tramp_size);
3888 amodule->got [got_offset] = tramp;
3889 amodule->got [got_offset + 1] = arg1;
3892 *code_len = tramp_size;
3898 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
3900 MonoAotModule *amodule;
3904 code = get_numerous_trampoline (MONO_AOT_TRAMP_STATIC_RGCTX, 2, &amodule, &got_offset, NULL);
3906 amodule->got [got_offset] = ctx;
3907 amodule->got [got_offset + 1] = addr;
3909 /* The caller expects an ftnptr */
3910 return mono_create_ftnptr (mono_domain_get (), code);
3914 mono_aot_get_unbox_trampoline (MonoMethod *method)
3916 guint32 method_index = mono_metadata_token_index (method->token) - 1;
3917 MonoAotModule *amodule;
3919 guint32 *ut, *ut_end, *entry;
3920 int low, high, entry_index;
3922 if (method->is_inflated && !mono_method_is_generic_sharable_impl (method, FALSE)) {
3923 method_index = find_extra_method (method, &amodule);
3924 g_assert (method_index != 0xffffff);
3926 amodule = method->klass->image->aot_module;
3930 ut = amodule->unbox_trampolines;
3931 ut_end = amodule->unbox_trampolines_end;
3933 /* Do a binary search in the sorted table */
3936 high = (ut_end - ut) / 2;
3937 while (low < high) {
3938 entry_index = (low + high) / 2;
3939 entry = &ut [(entry_index * 2)];
3940 if (entry [0] < method_index) {
3941 low = entry_index + 1;
3942 } else if (entry [0] > method_index) {
3945 code = amodule->code + entry [1];
3951 /* The caller expects an ftnptr */
3952 return mono_create_ftnptr (mono_domain_get (), code);
3956 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
3961 symbol = mono_get_rgctx_fetch_trampoline_name (slot);
3962 code = load_function (mono_defaults.corlib->aot_module, symbol);
3964 /* The caller expects an ftnptr */
3965 return mono_create_ftnptr (mono_domain_get (), code);
3969 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
3974 int i, index, real_count;
3975 MonoAotModule *amodule;
3977 code = get_numerous_trampoline (MONO_AOT_TRAMP_IMT_THUNK, 1, &amodule, &got_offset, NULL);
3980 for (i = 0; i < count; ++i) {
3981 MonoIMTCheckItem *item = imt_entries [i];
3983 if (item->is_equals)
3987 /* Save the entries into an array */
3988 buf = mono_domain_alloc (domain, (real_count + 1) * 2 * sizeof (gpointer));
3990 for (i = 0; i < count; ++i) {
3991 MonoIMTCheckItem *item = imt_entries [i];
3993 if (!item->is_equals)
3996 g_assert (item->key);
3998 buf [(index * 2)] = item->key;
3999 if (item->has_target_code) {
4000 gpointer *p = mono_domain_alloc (domain, sizeof (gpointer));
4001 *p = item->value.target_code;
4002 buf [(index * 2) + 1] = p;
4004 buf [(index * 2) + 1] = &(vtable->vtable [item->value.vtable_slot]);
4008 buf [(index * 2)] = NULL;
4009 buf [(index * 2) + 1] = fail_tramp;
4011 amodule->got [got_offset] = buf;
4017 * mono_aot_set_make_unreadable:
4019 * Set whenever to make all mmaped memory unreadable. In conjuction with a
4020 * SIGSEGV handler, this is useful to find out which pages the runtime tries to read.
4023 mono_aot_set_make_unreadable (gboolean unreadable)
4027 make_unreadable = unreadable;
4029 if (make_unreadable && !inited) {
4030 mono_counters_register ("AOT pagefaults", MONO_COUNTER_JIT | MONO_COUNTER_INT, &n_pagefaults);
4035 MonoAotModule *module;
4040 find_map (gpointer key, gpointer value, gpointer user_data)
4042 MonoAotModule *module = (MonoAotModule*)value;
4043 FindMapUserData *data = (FindMapUserData*)user_data;
4046 if ((data->ptr >= module->mem_begin) && (data->ptr < module->mem_end))
4047 data->module = module;
4050 static MonoAotModule*
4051 find_module_for_addr (void *ptr)
4053 FindMapUserData data;
4055 if (!make_unreadable)
4059 data.ptr = (guint8*)ptr;
4062 g_hash_table_foreach (aot_modules, (GHFunc)find_map, &data);
4069 * mono_aot_is_pagefault:
4071 * Should be called from a SIGSEGV signal handler to find out whenever @ptr is
4072 * within memory allocated by this module.
4075 mono_aot_is_pagefault (void *ptr)
4077 if (!make_unreadable)
4081 * Not signal safe, but SIGSEGV's are synchronous, and
4082 * this is only turned on by a MONO_DEBUG option.
4084 return find_module_for_addr (ptr) != NULL;
4088 * mono_aot_handle_pagefault:
4090 * Handle a pagefault caused by an unreadable page by making it readable again.
4093 mono_aot_handle_pagefault (void *ptr)
4095 #ifndef PLATFORM_WIN32
4096 guint8* start = (guint8*)ROUND_DOWN (((gssize)ptr), mono_pagesize ());
4100 res = mono_mprotect (start, mono_pagesize (), MONO_MMAP_READ|MONO_MMAP_WRITE|MONO_MMAP_EXEC);
4101 g_assert (res == 0);
4112 mono_aot_init (void)
4117 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
4123 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
4129 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
4135 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
4141 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
4147 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
4153 mono_aot_get_plt_entry (guint8 *code)
4159 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
4165 mono_aot_patch_plt_entry (guint8 *code, gpointer *got, mgreg_t *regs, guint8 *addr)
4170 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
4176 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
4178 g_assert_not_reached ();
4184 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
4186 g_assert_not_reached ();
4191 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
4193 g_assert_not_reached ();
4198 mono_aot_get_trampoline (const char *name)
4200 g_assert_not_reached ();
4205 mono_aot_get_unbox_trampoline (MonoMethod *method)
4207 g_assert_not_reached ();
4212 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
4214 g_assert_not_reached ();
4219 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
4221 g_assert_not_reached ();
4226 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
4228 g_assert_not_reached ();
4233 mono_aot_register_jit_icall (const char *name, gpointer addr)