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;
102 gpointer *method_addresses;
104 /* This contains <offset, index> pairs sorted by offset */
105 /* This is needed because LLVM emitted methods can be in any order */
106 gint32 *sorted_code_offsets;
107 gint32 sorted_code_offsets_len;
108 guint32 *method_info_offsets;
109 guint32 *got_info_offsets;
110 guint32 *ex_info_offsets;
111 guint32 *class_info_offsets;
112 guint32 *methods_loaded;
113 guint16 *class_name_table;
114 guint32 *extra_method_table;
115 guint32 *extra_method_info_offsets;
116 guint32 *unbox_trampolines;
117 guint32 *unbox_trampolines_end;
121 /* Points to the mono EH data created by LLVM */
122 guint8 *mono_eh_frame;
124 /* Points to the trampolines */
125 guint8 *trampolines [MONO_AOT_TRAMP_NUM];
126 /* The first unused trampoline of each kind */
127 guint32 trampoline_index [MONO_AOT_TRAMP_NUM];
129 gboolean use_page_trampolines;
131 MonoAotFileInfo info;
139 unsigned char *trampolines;
140 unsigned char *trampolines_end;
143 static GHashTable *aot_modules;
144 #define mono_aot_lock() EnterCriticalSection (&aot_mutex)
145 #define mono_aot_unlock() LeaveCriticalSection (&aot_mutex)
146 static CRITICAL_SECTION aot_mutex;
149 * Maps assembly names to the mono_aot_module_<NAME>_info symbols in the
150 * AOT modules registered by mono_aot_register_module ().
152 static GHashTable *static_aot_modules;
155 * Maps MonoJitInfo* to the aot module they belong to, this can be different
156 * from ji->method->klass->image's aot module for generic instances.
158 static GHashTable *ji_to_amodule;
161 * Whenever to AOT compile loaded assemblies on demand and store them in
162 * a cache under $HOME/.mono/aot-cache.
164 static gboolean use_aot_cache = FALSE;
167 * Whenever to spawn a new process to AOT a file or do it in-process. Only relevant if
168 * use_aot_cache is TRUE.
170 static gboolean spawn_compiler = TRUE;
173 static gint32 mono_last_aot_method = -1;
175 static gboolean make_unreadable = FALSE;
176 static guint32 name_table_accesses = 0;
177 static guint32 n_pagefaults = 0;
179 /* Used to speed-up find_aot_module () */
180 static gsize aot_code_low_addr = (gssize)-1;
181 static gsize aot_code_high_addr = 0;
183 static GHashTable *aot_jit_icall_hash;
186 #define USE_PAGE_TRAMPOLINES ((MonoAotModule*)mono_defaults.corlib->aot_module)->use_page_trampolines
188 #define USE_PAGE_TRAMPOLINES 0
191 #define mono_aot_page_lock() EnterCriticalSection (&aot_page_mutex)
192 #define mono_aot_page_unlock() LeaveCriticalSection (&aot_page_mutex)
193 static CRITICAL_SECTION aot_page_mutex;
196 init_plt (MonoAotModule *info);
198 /*****************************************************/
200 /*****************************************************/
205 * Load one of the images referenced by AMODULE. Returns NULL if the image is not
206 * found, and sets the loader error if SET_ERROR is TRUE.
209 load_image (MonoAotModule *amodule, int index, gboolean set_error)
211 MonoAssembly *assembly;
212 MonoImageOpenStatus status;
214 g_assert (index < amodule->image_table_len);
216 if (amodule->image_table [index])
217 return amodule->image_table [index];
218 if (amodule->out_of_date)
221 assembly = mono_assembly_load (&amodule->image_names [index], amodule->assembly->basedir, &status);
223 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);
224 amodule->out_of_date = TRUE;
227 char *full_name = mono_stringify_assembly_name (&amodule->image_names [index]);
228 mono_loader_set_error_assembly_load (full_name, FALSE);
234 if (strcmp (assembly->image->guid, amodule->image_guids [index])) {
235 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);
236 amodule->out_of_date = TRUE;
240 amodule->image_table [index] = assembly->image;
241 return assembly->image;
245 decode_value (guint8 *ptr, guint8 **rptr)
250 if ((b & 0x80) == 0){
253 } else if ((b & 0x40) == 0){
254 len = ((b & 0x3f) << 8 | ptr [1]);
256 } else if (b != 0xff) {
257 len = ((b & 0x1f) << 24) |
264 len = (ptr [1] << 24) | (ptr [2] << 16) | (ptr [3] << 8) | ptr [4];
270 //printf ("DECODE: %d.\n", len);
275 * mono_aot_get_offset:
277 * Decode an offset table emitted by emit_offset_table (), returning the INDEXth
281 mono_aot_get_offset (guint32 *table, int index)
283 int i, group, ngroups, index_entry_size;
284 int start_offset, offset, noffsets, group_size;
285 guint8 *data_start, *p;
286 guint32 *index32 = NULL;
287 guint16 *index16 = NULL;
289 noffsets = table [0];
290 group_size = table [1];
292 index_entry_size = table [3];
293 group = index / group_size;
295 if (index_entry_size == 2) {
296 index16 = (guint16*)&table [4];
297 data_start = (guint8*)&index16 [ngroups];
298 p = data_start + index16 [group];
300 index32 = (guint32*)&table [4];
301 data_start = (guint8*)&index32 [ngroups];
302 p = data_start + index32 [group];
305 /* offset will contain the value of offsets [group * group_size] */
306 offset = start_offset = decode_value (p, &p);
307 for (i = group * group_size + 1; i <= index; ++i) {
308 offset += decode_value (p, &p);
311 //printf ("Offset lookup: %d -> %d, start=%d, p=%d\n", index, offset, start_offset, table [3 + group]);
317 decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf);
320 decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf);
323 decode_type (MonoAotModule *module, guint8 *buf, guint8 **endbuf);
325 static MonoGenericInst*
326 decode_generic_inst (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
329 MonoType **type_argv;
330 MonoGenericInst *inst;
333 type_argc = decode_value (p, &p);
334 type_argv = g_new0 (MonoType*, type_argc);
336 for (i = 0; i < type_argc; ++i) {
337 MonoClass *pclass = decode_klass_ref (module, p, &p);
342 type_argv [i] = &pclass->byval_arg;
345 inst = mono_metadata_get_generic_inst (type_argc, type_argv);
354 decode_generic_context (MonoAotModule *module, MonoGenericContext *ctx, guint8 *buf, guint8 **endbuf)
361 argc = decode_value (p, &p);
364 ctx->class_inst = decode_generic_inst (module, p, &p);
365 if (!ctx->class_inst)
369 argc = decode_value (p, &p);
372 ctx->method_inst = decode_generic_inst (module, p, &p);
373 if (!ctx->method_inst)
382 decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
385 MonoClass *klass = NULL, *eklass;
386 guint32 token, rank, idx;
390 reftype = decode_value (p, &p);
397 case MONO_AOT_TYPEREF_TYPEDEF_INDEX:
398 idx = decode_value (p, &p);
399 image = load_image (module, 0, TRUE);
402 klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF + idx);
404 case MONO_AOT_TYPEREF_TYPEDEF_INDEX_IMAGE:
405 idx = decode_value (p, &p);
406 image = load_image (module, decode_value (p, &p), TRUE);
409 klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF + idx);
411 case MONO_AOT_TYPEREF_TYPESPEC_TOKEN:
412 token = decode_value (p, &p);
413 image = module->assembly->image;
416 klass = mono_class_get (image, token);
418 case MONO_AOT_TYPEREF_GINST: {
420 MonoGenericContext ctx;
423 gclass = decode_klass_ref (module, p, &p);
426 g_assert (gclass->generic_container);
428 memset (&ctx, 0, sizeof (ctx));
429 ctx.class_inst = decode_generic_inst (module, p, &p);
432 type = mono_class_inflate_generic_type (&gclass->byval_arg, &ctx);
433 klass = mono_class_from_mono_type (type);
434 mono_metadata_free_type (type);
437 case MONO_AOT_TYPEREF_VAR: {
439 MonoGenericContainer *container = NULL;
440 int type = decode_value (p, &p);
441 int num = decode_value (p, &p);
442 gboolean has_container = decode_value (p, &p);
446 gboolean is_method = decode_value (p, &p);
449 MonoMethod *method_def;
450 g_assert (type == MONO_TYPE_MVAR);
451 method_def = decode_resolve_method_ref (module, p, &p);
455 container = mono_method_get_generic_container (method_def);
457 MonoClass *class_def;
458 g_assert (type == MONO_TYPE_VAR);
459 class_def = decode_klass_ref (module, p, &p);
463 container = class_def->generic_container;
466 serial = decode_value (p, &p);
469 // FIXME: Memory management
470 t = g_new0 (MonoType, 1);
473 t->data.generic_param = mono_generic_container_get_param (container, num);
474 g_assert (serial == 0);
477 MonoGenericParam *par = (MonoGenericParam*)g_new0 (MonoGenericParamFull, 1);
479 par->serial = serial;
481 par->image = mono_defaults.corlib;
482 t->data.generic_param = par;
485 // FIXME: Maybe use types directly to avoid
486 // the overhead of creating MonoClass-es
487 klass = mono_class_from_mono_type (t);
492 case MONO_AOT_TYPEREF_ARRAY:
494 rank = decode_value (p, &p);
495 eklass = decode_klass_ref (module, p, &p);
496 klass = mono_array_class_get (eklass, rank);
498 case MONO_AOT_TYPEREF_PTR: {
501 t = decode_type (module, p, &p);
504 klass = mono_class_from_mono_type (t);
508 case MONO_AOT_TYPEREF_BLOB_INDEX: {
509 guint32 offset = decode_value (p, &p);
512 p2 = module->blob + offset;
513 klass = decode_klass_ref (module, p2, &p2);
517 g_assert_not_reached ();
520 //printf ("BLA: %s\n", mono_type_full_name (&klass->byval_arg));
525 static MonoClassField*
526 decode_field_info (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
528 MonoClass *klass = decode_klass_ref (module, buf, &buf);
535 token = MONO_TOKEN_FIELD_DEF + decode_value (p, &p);
539 return mono_class_get_field (klass, token);
543 * Parse a MonoType encoded by encode_type () in aot-compiler.c. Return malloc-ed
547 decode_type (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
552 t = g_malloc0 (sizeof (MonoType));
555 if (*p == MONO_TYPE_PINNED) {
558 } else if (*p == MONO_TYPE_BYREF) {
571 case MONO_TYPE_BOOLEAN:
585 case MONO_TYPE_STRING:
586 case MONO_TYPE_OBJECT:
587 case MONO_TYPE_TYPEDBYREF:
589 case MONO_TYPE_VALUETYPE:
590 case MONO_TYPE_CLASS:
591 t->data.klass = decode_klass_ref (module, p, &p);
593 case MONO_TYPE_SZARRAY:
594 t->data.klass = decode_klass_ref (module, p, &p);
600 t->data.type = decode_type (module, p, &p);
602 case MONO_TYPE_GENERICINST: {
604 MonoGenericContext ctx;
608 gclass = decode_klass_ref (module, p, &p);
611 g_assert (gclass->generic_container);
613 memset (&ctx, 0, sizeof (ctx));
614 ctx.class_inst = decode_generic_inst (module, p, &p);
617 type = mono_class_inflate_generic_type (&gclass->byval_arg, &ctx);
618 klass = mono_class_from_mono_type (type);
619 t->data.generic_class = klass->generic_class;
622 case MONO_TYPE_ARRAY: {
623 MonoArrayType *array;
626 // FIXME: memory management
627 array = g_new0 (MonoArrayType, 1);
628 array->eklass = decode_klass_ref (module, p, &p);
631 array->rank = decode_value (p, &p);
632 array->numsizes = decode_value (p, &p);
635 array->sizes = g_malloc0 (sizeof (int) * array->numsizes);
636 for (i = 0; i < array->numsizes; ++i)
637 array->sizes [i] = decode_value (p, &p);
639 array->numlobounds = decode_value (p, &p);
640 if (array->numlobounds)
641 array->lobounds = g_malloc0 (sizeof (int) * array->numlobounds);
642 for (i = 0; i < array->numlobounds; ++i)
643 array->lobounds [i] = decode_value (p, &p);
644 t->data.array = array;
648 case MONO_TYPE_MVAR: {
649 MonoClass *klass = decode_klass_ref (module, p, &p);
652 t->data.generic_param = klass->byval_arg.data.generic_param;
656 g_assert_not_reached ();
664 // FIXME: Error handling, memory management
666 static MonoMethodSignature*
667 decode_signature_with_target (MonoAotModule *module, MonoMethodSignature *target, guint8 *buf, guint8 **endbuf)
669 MonoMethodSignature *sig;
671 int i, param_count, call_conv, gen_param_count = 0;
673 gboolean hasthis, explicit_this, has_gen_params;
677 has_gen_params = (flags & 0x10) != 0;
678 hasthis = (flags & 0x20) != 0;
679 explicit_this = (flags & 0x40) != 0;
680 call_conv = flags & 0x0F;
683 gen_param_count = decode_value (p, &p);
684 param_count = decode_value (p, &p);
685 if (target && param_count != target->param_count)
687 sig = g_malloc0 (MONO_SIZEOF_METHOD_SIGNATURE + param_count * sizeof (MonoType *));
688 sig->param_count = param_count;
689 sig->sentinelpos = -1;
690 sig->hasthis = hasthis;
691 sig->explicit_this = explicit_this;
692 sig->call_convention = call_conv;
693 sig->param_count = param_count;
694 sig->ret = decode_type (module, p, &p);
695 for (i = 0; i < param_count; ++i) {
696 if (*p == MONO_TYPE_SENTINEL) {
697 g_assert (sig->call_convention == MONO_CALL_VARARG);
698 sig->sentinelpos = i;
701 sig->params [i] = decode_type (module, p, &p);
704 if (sig->call_convention == MONO_CALL_VARARG && sig->sentinelpos == -1)
705 sig->sentinelpos = sig->param_count;
712 static MonoMethodSignature*
713 decode_signature (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
715 return decode_signature_with_target (module, NULL, buf, endbuf);
719 sig_matches_target (MonoAotModule *module, MonoMethod *target, guint8 *buf, guint8 **endbuf)
721 MonoMethodSignature *sig;
725 sig = decode_signature_with_target (module, mono_method_signature (target), p, &p);
726 res = sig && mono_metadata_signature_equal (mono_method_signature (target), sig);
732 /* Stores information returned by decode_method_ref () */
737 gboolean no_aot_trampoline;
741 * decode_method_ref_with_target:
743 * Decode a method reference, storing the image/token into a MethodRef structure.
744 * This avoids loading metadata for the method if the caller does not need it. If the method has
745 * no token, then it is loaded from metadata and ref->method is set to the method instance.
746 * If TARGET is non-NULL, abort decoding if it can be determined that the decoded method
747 * couldn't resolve to TARGET, and return FALSE.
748 * There are some kinds of method references which only support a non-null TARGET.
749 * This means that its not possible to decode this into a method, only to check
750 * that the method reference matches a given method. This is normally not a problem
751 * as these wrappers only occur in the extra_methods table, where we already have
752 * a method we want to lookup.
755 decode_method_ref_with_target (MonoAotModule *module, MethodRef *ref, MonoMethod *target, guint8 *buf, guint8 **endbuf)
757 guint32 image_index, value;
758 MonoImage *image = NULL;
761 memset (ref, 0, sizeof (MethodRef));
763 value = decode_value (p, &p);
764 image_index = value >> 24;
766 if (image_index == MONO_AOT_METHODREF_NO_AOT_TRAMPOLINE) {
767 ref->no_aot_trampoline = TRUE;
768 value = decode_value (p, &p);
769 image_index = value >> 24;
772 if (image_index < MONO_AOT_METHODREF_MIN || image_index == MONO_AOT_METHODREF_METHODSPEC || image_index == MONO_AOT_METHODREF_GINST) {
773 if (target && target->wrapper_type)
777 if (image_index == MONO_AOT_METHODREF_WRAPPER) {
778 guint32 wrapper_type;
780 wrapper_type = decode_value (p, &p);
782 if (target && target->wrapper_type != wrapper_type)
786 image = mono_defaults.corlib;
788 switch (wrapper_type) {
789 #ifndef DISABLE_REMOTING
790 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK: {
791 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
795 mono_class_init (m->klass);
796 ref->method = mono_marshal_get_remoting_invoke_with_check (m);
799 case MONO_WRAPPER_PROXY_ISINST: {
800 MonoClass *klass = decode_klass_ref (module, p, &p);
803 ref->method = mono_marshal_get_proxy_cancast (klass);
806 case MONO_WRAPPER_LDFLD:
807 case MONO_WRAPPER_LDFLDA:
808 case MONO_WRAPPER_STFLD:
809 case MONO_WRAPPER_ISINST: {
810 MonoClass *klass = decode_klass_ref (module, p, &p);
813 if (wrapper_type == MONO_WRAPPER_LDFLD)
814 ref->method = mono_marshal_get_ldfld_wrapper (&klass->byval_arg);
815 else if (wrapper_type == MONO_WRAPPER_LDFLDA)
816 ref->method = mono_marshal_get_ldflda_wrapper (&klass->byval_arg);
817 else if (wrapper_type == MONO_WRAPPER_STFLD)
818 ref->method = mono_marshal_get_stfld_wrapper (&klass->byval_arg);
819 else if (wrapper_type == MONO_WRAPPER_ISINST)
820 ref->method = mono_marshal_get_isinst (klass);
822 g_assert_not_reached ();
825 case MONO_WRAPPER_LDFLD_REMOTE:
826 ref->method = mono_marshal_get_ldfld_remote_wrapper (NULL);
828 case MONO_WRAPPER_STFLD_REMOTE:
829 ref->method = mono_marshal_get_stfld_remote_wrapper (NULL);
832 case MONO_WRAPPER_ALLOC: {
833 int atype = decode_value (p, &p);
835 ref->method = mono_gc_get_managed_allocator_by_type (atype);
836 g_assert (ref->method);
839 case MONO_WRAPPER_WRITE_BARRIER:
840 ref->method = mono_gc_get_write_barrier ();
842 case MONO_WRAPPER_STELEMREF: {
843 int subtype = decode_value (p, &p);
845 if (subtype == WRAPPER_SUBTYPE_NONE) {
846 ref->method = mono_marshal_get_stelemref ();
847 } else if (subtype == WRAPPER_SUBTYPE_VIRTUAL_STELEMREF) {
851 kind = decode_value (p, &p);
853 /* Can't decode this */
856 if (target->wrapper_type == MONO_WRAPPER_STELEMREF) {
857 info = mono_marshal_get_wrapper_info (target);
860 if (info->subtype == subtype && info->d.virtual_stelemref.kind == kind)
861 ref->method = target;
868 g_assert_not_reached ();
872 case MONO_WRAPPER_SYNCHRONIZED: {
873 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
877 ref->method = mono_marshal_get_synchronized_wrapper (m);
880 case MONO_WRAPPER_UNKNOWN: {
881 MonoMethodDesc *desc;
882 MonoMethod *orig_method;
883 int subtype = decode_value (p, &p);
885 if (subtype == WRAPPER_SUBTYPE_PTR_TO_STRUCTURE || subtype == WRAPPER_SUBTYPE_STRUCTURE_TO_PTR) {
886 MonoClass *klass = decode_klass_ref (module, p, &p);
893 if (klass != target->klass)
896 if (subtype == WRAPPER_SUBTYPE_PTR_TO_STRUCTURE) {
897 if (strcmp (target->name, "PtrToStructure"))
899 ref->method = mono_marshal_get_ptr_to_struct (klass);
901 if (strcmp (target->name, "StructureToPtr"))
903 ref->method = mono_marshal_get_struct_to_ptr (klass);
905 } else if (subtype == WRAPPER_SUBTYPE_SYNCHRONIZED_INNER) {
906 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
910 ref->method = mono_marshal_get_synchronized_inner_wrapper (m);
911 } else if (subtype == WRAPPER_SUBTYPE_GSHAREDVT_IN) {
912 ref->method = mono_marshal_get_gsharedvt_in_wrapper ();
913 } else if (subtype == WRAPPER_SUBTYPE_GSHAREDVT_OUT) {
914 ref->method = mono_marshal_get_gsharedvt_out_wrapper ();
916 if (subtype == WRAPPER_SUBTYPE_FAST_MONITOR_ENTER)
917 desc = mono_method_desc_new ("Monitor:Enter", FALSE);
918 else if (subtype == WRAPPER_SUBTYPE_FAST_MONITOR_EXIT)
919 desc = mono_method_desc_new ("Monitor:Exit", FALSE);
920 else if (subtype == WRAPPER_SUBTYPE_FAST_MONITOR_ENTER_V4)
921 desc = mono_method_desc_new ("Monitor:Enter(object,bool&)", FALSE);
923 g_assert_not_reached ();
924 orig_method = mono_method_desc_search_in_class (desc, mono_defaults.monitor_class);
925 g_assert (orig_method);
926 mono_method_desc_free (desc);
927 ref->method = mono_monitor_get_fast_path (orig_method);
931 case MONO_WRAPPER_MANAGED_TO_MANAGED: {
932 int subtype = decode_value (p, &p);
934 if (subtype == WRAPPER_SUBTYPE_ELEMENT_ADDR) {
935 int rank = decode_value (p, &p);
936 int elem_size = decode_value (p, &p);
938 ref->method = mono_marshal_get_array_address (rank, elem_size);
939 } else if (subtype == WRAPPER_SUBTYPE_STRING_CTOR) {
943 m = decode_resolve_method_ref (module, p, &p);
949 g_assert (target->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED);
951 info = mono_marshal_get_wrapper_info (target);
952 if (info && info->subtype == subtype && info->d.string_ctor.method == m)
953 ref->method = target;
959 case MONO_WRAPPER_MANAGED_TO_NATIVE: {
961 int subtype = decode_value (p, &p);
964 if (subtype == WRAPPER_SUBTYPE_ICALL_WRAPPER) {
969 if (strcmp (target->name, name) != 0)
971 ref->method = target;
973 m = decode_resolve_method_ref (module, p, &p);
978 /* This should only happen when looking for an extra method */
981 if (mono_marshal_method_from_wrapper (target) == m)
982 ref->method = target;
988 case MONO_WRAPPER_CASTCLASS: {
989 int subtype = decode_value (p, &p);
991 if (subtype == WRAPPER_SUBTYPE_CASTCLASS_WITH_CACHE)
992 ref->method = mono_marshal_get_castclass_with_cache ();
993 else if (subtype == WRAPPER_SUBTYPE_ISINST_WITH_CACHE)
994 ref->method = mono_marshal_get_isinst_with_cache ();
996 g_assert_not_reached ();
999 case MONO_WRAPPER_RUNTIME_INVOKE: {
1000 int subtype = decode_value (p, &p);
1005 if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_DYNAMIC) {
1006 if (strcmp (target->name, "runtime_invoke_dynamic") != 0)
1008 ref->method = target;
1009 } else if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_DIRECT) {
1010 /* Direct wrapper */
1011 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
1015 ref->method = mono_marshal_get_runtime_invoke (m, FALSE);
1016 } else if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_VIRTUAL) {
1017 /* Virtual direct wrapper */
1018 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
1022 ref->method = mono_marshal_get_runtime_invoke (m, TRUE);
1024 MonoMethodSignature *sig;
1027 sig = decode_signature_with_target (module, NULL, p, &p);
1028 info = mono_marshal_get_wrapper_info (target);
1031 if (info->subtype != subtype)
1033 g_assert (info->d.runtime_invoke.sig);
1034 if (mono_metadata_signature_equal (sig, info->d.runtime_invoke.sig))
1035 ref->method = target;
1041 case MONO_WRAPPER_DELEGATE_INVOKE:
1042 case MONO_WRAPPER_DELEGATE_BEGIN_INVOKE:
1043 case MONO_WRAPPER_DELEGATE_END_INVOKE: {
1044 gboolean is_inflated = decode_value (p, &p);
1048 MonoMethod *invoke, *wrapper;
1050 klass = decode_klass_ref (module, p, &p);
1054 switch (wrapper_type) {
1055 case MONO_WRAPPER_DELEGATE_INVOKE:
1056 invoke = mono_get_delegate_invoke (klass);
1057 wrapper = mono_marshal_get_delegate_invoke (invoke, NULL);
1059 case MONO_WRAPPER_DELEGATE_BEGIN_INVOKE:
1060 invoke = mono_get_delegate_begin_invoke (klass);
1061 wrapper = mono_marshal_get_delegate_begin_invoke (invoke);
1063 case MONO_WRAPPER_DELEGATE_END_INVOKE:
1064 invoke = mono_get_delegate_end_invoke (klass);
1065 wrapper = mono_marshal_get_delegate_end_invoke (invoke);
1068 g_assert_not_reached ();
1071 if (target && wrapper != target)
1073 ref->method = wrapper;
1076 * These wrappers are associated with a signature, not with a method.
1077 * Since we can't decode them into methods, they need a target method.
1082 if (sig_matches_target (module, target, p, &p))
1083 ref->method = target;
1089 case MONO_WRAPPER_NATIVE_TO_MANAGED: {
1093 m = decode_resolve_method_ref (module, p, &p);
1096 klass = decode_klass_ref (module, p, &p);
1099 ref->method = mono_marshal_get_managed_wrapper (m, klass, 0);
1103 g_assert_not_reached ();
1105 } else if (image_index == MONO_AOT_METHODREF_METHODSPEC) {
1106 image_index = decode_value (p, &p);
1107 ref->token = decode_value (p, &p);
1109 image = load_image (module, image_index, TRUE);
1112 } else if (image_index == MONO_AOT_METHODREF_GINST) {
1114 MonoGenericContext ctx;
1117 * These methods do not have a token which resolves them, so we
1118 * resolve them immediately.
1120 klass = decode_klass_ref (module, p, &p);
1124 if (target && target->klass != klass)
1127 image_index = decode_value (p, &p);
1128 ref->token = decode_value (p, &p);
1130 image = load_image (module, image_index, TRUE);
1134 ref->method = mono_get_method_full (image, ref->token, NULL, NULL);
1138 memset (&ctx, 0, sizeof (ctx));
1140 if (FALSE && klass->generic_class) {
1141 ctx.class_inst = klass->generic_class->context.class_inst;
1142 ctx.method_inst = NULL;
1144 ref->method = mono_class_inflate_generic_method_full (ref->method, klass, &ctx);
1147 memset (&ctx, 0, sizeof (ctx));
1149 if (!decode_generic_context (module, &ctx, p, &p))
1152 ref->method = mono_class_inflate_generic_method_full (ref->method, klass, &ctx);
1153 } else if (image_index == MONO_AOT_METHODREF_ARRAY) {
1157 klass = decode_klass_ref (module, p, &p);
1160 method_type = decode_value (p, &p);
1161 switch (method_type) {
1163 ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank);
1166 ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank * 2);
1169 ref->method = mono_class_get_method_from_name (klass, "Get", -1);
1172 ref->method = mono_class_get_method_from_name (klass, "Address", -1);
1175 ref->method = mono_class_get_method_from_name (klass, "Set", -1);
1178 g_assert_not_reached ();
1181 if (image_index == MONO_AOT_METHODREF_LARGE_IMAGE_INDEX) {
1182 image_index = decode_value (p, &p);
1183 value = decode_value (p, &p);
1186 ref->token = MONO_TOKEN_METHOD_DEF | (value & 0xffffff);
1188 image = load_image (module, image_index, TRUE);
1201 decode_method_ref (MonoAotModule *module, MethodRef *ref, guint8 *buf, guint8 **endbuf)
1203 return decode_method_ref_with_target (module, ref, NULL, buf, endbuf);
1207 * decode_resolve_method_ref_with_target:
1209 * Similar to decode_method_ref, but resolve and return the method itself.
1212 decode_resolve_method_ref_with_target (MonoAotModule *module, MonoMethod *target, guint8 *buf, guint8 **endbuf)
1217 res = decode_method_ref_with_target (module, &ref, target, buf, endbuf);
1224 return mono_get_method (ref.image, ref.token, NULL);
1228 decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
1230 return decode_resolve_method_ref_with_target (module, NULL, buf, endbuf);
1234 create_cache_structure (void)
1240 home = g_get_home_dir ();
1244 tmp = g_build_filename (home, ".mono", NULL);
1245 if (!g_file_test (tmp, G_FILE_TEST_IS_DIR)) {
1246 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT creating directory %s", tmp);
1250 err = mkdir (tmp, 0777);
1253 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed: %s", g_strerror (errno));
1259 tmp = g_build_filename (home, ".mono", "aot-cache", NULL);
1260 if (!g_file_test (tmp, G_FILE_TEST_IS_DIR)) {
1261 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT creating directory %s", tmp);
1265 err = mkdir (tmp, 0777);
1268 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed: %s", g_strerror (errno));
1277 * load_aot_module_from_cache:
1279 * Experimental code to AOT compile loaded assemblies on demand.
1282 * - Add environment variable MONO_AOT_CACHE_OPTIONS
1283 * - Add options for controlling the cache size
1284 * - Handle full cache by deleting old assemblies lru style
1285 * - Add options for excluding assemblies during development
1286 * - Maybe add a threshold after an assembly is AOT compiled
1287 * - invoking a new mono process is a security risk
1288 * - recompile the AOT module if one of its dependencies changes
1291 load_aot_module_from_cache (MonoAssembly *assembly, char **aot_name)
1293 char *fname, *cmd, *tmp2, *aot_options;
1302 if (assembly->image->dynamic)
1305 create_cache_structure ();
1307 home = g_get_home_dir ();
1309 tmp2 = g_strdup_printf ("%s-%s%s", assembly->image->assembly_name, assembly->image->guid, SHARED_EXT);
1310 fname = g_build_filename (home, ".mono", "aot-cache", tmp2, NULL);
1314 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT trying to load from cache: '%s'.", fname);
1315 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
1318 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT not found.");
1320 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT precompiling assembly '%s'... ", assembly->image->name);
1322 aot_options = g_strdup_printf ("outfile=%s", fname);
1324 if (spawn_compiler) {
1325 /* FIXME: security */
1326 /* FIXME: Has to pass the assembly loading path to the child process */
1327 cmd = g_strdup_printf ("mono -O=all --aot=%s %s", aot_options, assembly->image->name);
1329 res = g_spawn_command_line_sync (cmd, &out, &err, &exit_status, NULL);
1331 #if !defined(HOST_WIN32) && !defined(__ppc__) && !defined(__ppc64__) && !defined(__powerpc__)
1333 if (!WIFEXITED (exit_status) && (WEXITSTATUS (exit_status) == 0))
1334 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT failed: %s.", err);
1336 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT succeeded.");
1343 res = mono_compile_assembly (assembly, mono_parse_default_optimizations (NULL), aot_options);
1345 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT failed.");
1347 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT succeeded.");
1351 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
1353 g_free (aot_options);
1360 find_symbol (MonoDl *module, gpointer *globals, const char *name, gpointer *value)
1364 guint16 *table, *entry;
1367 char *symbol = (char*)name;
1370 symbol = g_strdup_printf ("_%s", name);
1373 /* The first entry points to the hash */
1374 table = globals [0];
1377 table_size = table [0];
1380 hash = mono_metadata_str_hash (symbol) % table_size;
1382 entry = &table [hash * 2];
1384 /* Search the hash for the index into the globals table */
1386 while (entry [0] != 0) {
1387 guint32 index = entry [0] - 1;
1388 guint32 next = entry [1];
1390 //printf ("X: %s %s\n", (char*)globals [index * 2], name);
1392 if (!strcmp (globals [index * 2], symbol)) {
1393 global_index = index;
1398 entry = &table [next * 2];
1404 if (global_index != -1)
1405 *value = globals [global_index * 2 + 1];
1412 char *err = mono_dl_symbol (module, name, value);
1420 check_usable (MonoAssembly *assembly, MonoAotFileInfo *info, char **out_msg)
1424 gboolean usable = TRUE;
1427 guint32 excluded_cpu_optimizations;
1429 if (strcmp (assembly->image->guid, info->assembly_guid)) {
1430 msg = g_strdup_printf ("doesn't match assembly");
1434 build_info = mono_get_runtime_build_info ();
1435 if (strlen (info->runtime_version) > 0 && strcmp (info->runtime_version, build_info)) {
1436 msg = g_strdup_printf ("compiled against runtime version '%s' while this runtime has version '%s'", info->runtime_version, build_info);
1439 g_free (build_info);
1441 full_aot = info->flags & MONO_AOT_FILE_FLAG_FULL_AOT;
1443 if (mono_aot_only && !full_aot) {
1444 msg = g_strdup_printf ("not compiled with --aot=full");
1447 if (!mono_aot_only && full_aot) {
1448 msg = g_strdup_printf ("compiled with --aot=full");
1452 /* mono_arch_find_imt_method () requires this */
1453 if ((info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM) && !mono_use_llvm) {
1454 msg = g_strdup_printf ("compiled against LLVM");
1457 if (!(info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM) && mono_use_llvm) {
1458 msg = g_strdup_printf ("not compiled against LLVM");
1462 if (mini_get_debug_options ()->mdb_optimizations && !(info->flags & MONO_AOT_FILE_FLAG_DEBUG) && !full_aot) {
1463 msg = g_strdup_printf ("not compiled for debugging");
1467 mono_arch_cpu_optimizations (&excluded_cpu_optimizations);
1468 if (info->opts & excluded_cpu_optimizations) {
1469 msg = g_strdup_printf ("compiled with unsupported CPU optimizations");
1473 if (!mono_aot_only && (info->simd_opts & ~mono_arch_cpu_enumerate_simd_versions ())) {
1474 msg = g_strdup_printf ("compiled with unsupported SIMD extensions");
1480 if (info->gc_name_index != -1) {
1481 char *gc_name = (char*)&blob [info->gc_name_index];
1482 const char *current_gc_name = mono_gc_get_gc_name ();
1484 if (strcmp (current_gc_name, gc_name) != 0) {
1485 msg = g_strdup_printf ("compiled against GC %s, while the current runtime uses GC %s.\n", gc_name, current_gc_name);
1494 /* This returns an interop address */
1496 get_arm_bl_target (guint32 *ins_addr)
1499 guint32 ins = *ins_addr;
1502 if ((ins >> ARMCOND_SHIFT) == ARMCOND_NV) {
1504 offset = (((int)(((ins & 0xffffff) << 1) | ((ins >> 24) & 0x1))) << 7) >> 7;
1505 return (char*)ins_addr + (offset * 2) + 8 + 1;
1507 offset = (((int)ins & 0xffffff) << 8) >> 8;
1508 return (char*)ins_addr + (offset * 4) + 8;
1511 g_assert_not_reached ();
1517 load_aot_module (MonoAssembly *assembly, gpointer user_data)
1520 MonoAotModule *amodule;
1522 gboolean usable = TRUE;
1523 char *version_symbol = NULL;
1525 gpointer *globals = NULL;
1526 MonoAotFileInfo *info = NULL;
1529 gboolean do_load_image = TRUE;
1531 if (mono_compile_aot)
1534 if (assembly->image->aot_module)
1536 * Already loaded. This can happen because the assembly loading code might invoke
1537 * the assembly load hooks multiple times for the same assembly.
1541 if (assembly->image->dynamic || assembly->ref_only)
1544 if (mono_security_cas_enabled ())
1548 if (static_aot_modules)
1549 info = g_hash_table_lookup (static_aot_modules, assembly->aname.name);
1555 /* Statically linked AOT module */
1557 aot_name = g_strdup_printf ("%s", assembly->aname.name);
1558 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "Found statically linked AOT module '%s'.\n", aot_name);
1559 globals = info->globals;
1562 sofile = load_aot_module_from_cache (assembly, &aot_name);
1565 aot_name = g_strdup_printf ("%s%s", assembly->image->name, SHARED_EXT);
1567 sofile = mono_dl_open (aot_name, MONO_DL_LAZY, &err);
1570 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed to load AOT module %s: %s\n", aot_name, err);
1576 if (!sofile && !globals) {
1577 if (mono_aot_only && assembly->image->tables [MONO_TABLE_METHOD].rows) {
1578 fprintf (stderr, "Failed to load AOT module '%s' in aot-only mode.\n", aot_name);
1586 find_symbol (sofile, globals, "mono_aot_version", (gpointer *) &version_symbol);
1587 find_symbol (sofile, globals, "mono_aot_file_info", (gpointer*)&info);
1590 if (version_symbol) {
1591 /* Old file format */
1592 version = atoi (version_symbol);
1595 version = info->version;
1598 if (version != MONO_AOT_FILE_VERSION) {
1599 msg = g_strdup_printf ("wrong file format version (expected %d got %d)", MONO_AOT_FILE_VERSION, version);
1602 usable = check_usable (assembly, info, &msg);
1606 if (mono_aot_only) {
1607 fprintf (stderr, "Failed to load AOT module '%s' while running in aot-only mode: %s.\n", aot_name, msg);
1610 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is unusable: %s.\n", aot_name, msg);
1615 mono_dl_close (sofile);
1616 assembly->image->aot_module = NULL;
1621 g_assert (info->double_align == __alignof__ (double));
1622 g_assert (info->long_align == __alignof__ (gint64));
1626 amodule = g_new0 (MonoAotModule, 1);
1627 amodule->aot_name = aot_name;
1628 amodule->assembly = assembly;
1630 memcpy (&amodule->info, info, sizeof (*info));
1632 amodule->got = amodule->info.got;
1633 amodule->got [0] = assembly->image;
1634 amodule->globals = globals;
1635 amodule->sofile = sofile;
1636 amodule->method_to_code = g_hash_table_new (mono_aligned_addr_hash, NULL);
1637 amodule->blob = blob;
1639 /* Read image table */
1641 guint32 table_len, i;
1644 table = info->image_table;
1647 table_len = *(guint32*)table;
1648 table += sizeof (guint32);
1649 amodule->image_table = g_new0 (MonoImage*, table_len);
1650 amodule->image_names = g_new0 (MonoAssemblyName, table_len);
1651 amodule->image_guids = g_new0 (char*, table_len);
1652 amodule->image_table_len = table_len;
1653 for (i = 0; i < table_len; ++i) {
1654 MonoAssemblyName *aname = &(amodule->image_names [i]);
1656 aname->name = g_strdup (table);
1657 table += strlen (table) + 1;
1658 amodule->image_guids [i] = g_strdup (table);
1659 table += strlen (table) + 1;
1661 aname->culture = g_strdup (table);
1662 table += strlen (table) + 1;
1663 memcpy (aname->public_key_token, table, strlen (table) + 1);
1664 table += strlen (table) + 1;
1666 table = ALIGN_PTR_TO (table, 8);
1667 aname->flags = *(guint32*)table;
1669 aname->major = *(guint32*)table;
1671 aname->minor = *(guint32*)table;
1673 aname->build = *(guint32*)table;
1675 aname->revision = *(guint32*)table;
1680 amodule->code_offsets = info->code_offsets;
1682 amodule->method_addresses = info->method_addresses;
1684 amodule->code = info->methods;
1686 /* Mask out thumb interop bit */
1687 amodule->code = (void*)((mgreg_t)amodule->code & ~1);
1689 amodule->code_end = info->methods_end;
1690 amodule->method_info_offsets = info->method_info_offsets;
1691 amodule->ex_info_offsets = info->ex_info_offsets;
1692 amodule->class_info_offsets = info->class_info_offsets;
1693 amodule->class_name_table = info->class_name_table;
1694 amodule->extra_method_table = info->extra_method_table;
1695 amodule->extra_method_info_offsets = info->extra_method_info_offsets;
1696 amodule->unbox_trampolines = info->unbox_trampolines;
1697 amodule->unbox_trampolines_end = info->unbox_trampolines_end;
1698 amodule->got_info_offsets = info->got_info_offsets;
1699 amodule->unwind_info = info->unwind_info;
1700 amodule->mem_end = info->mem_end;
1701 amodule->mem_begin = amodule->code;
1702 amodule->plt = info->plt;
1703 amodule->plt_end = info->plt_end;
1704 amodule->mono_eh_frame = info->mono_eh_frame;
1705 amodule->trampolines [MONO_AOT_TRAMP_SPECIFIC] = info->specific_trampolines;
1706 amodule->trampolines [MONO_AOT_TRAMP_STATIC_RGCTX] = info->static_rgctx_trampolines;
1707 amodule->trampolines [MONO_AOT_TRAMP_IMT_THUNK] = info->imt_thunks;
1708 amodule->trampolines [MONO_AOT_TRAMP_GSHAREDVT_ARG] = info->gsharedvt_arg_trampolines;
1709 amodule->thumb_end = info->thumb_end;
1712 if (info->flags & MONO_AOT_FILE_FLAG_DIRECT_METHOD_ADDRESSES) {
1713 /* Compute code_offsets from the method addresses */
1714 amodule->code_offsets = g_malloc0 (amodule->info.nmethods * sizeof (gint32));
1715 for (i = 0; i < amodule->info.nmethods; ++i) {
1716 /* method_addresses () contains a table of branches, since the ios linker can update those correctly */
1717 void *addr = get_arm_bl_target ((guint32*)(amodule->method_addresses + i));
1719 if (addr == amodule->method_addresses)
1720 amodule->code_offsets [i] = 0xffffffff;
1722 amodule->code_offsets [i] = (char*)addr - (char*)amodule->code;
1727 if (make_unreadable) {
1728 #ifndef TARGET_WIN32
1730 guint8 *page_start, *page_end;
1733 addr = amodule->mem_begin;
1734 len = amodule->mem_end - amodule->mem_begin;
1736 /* Round down in both directions to avoid modifying data which is not ours */
1737 page_start = (guint8 *) (((gssize) (addr)) & ~ (mono_pagesize () - 1)) + mono_pagesize ();
1738 page_end = (guint8 *) (((gssize) (addr + len)) & ~ (mono_pagesize () - 1));
1739 if (page_end > page_start) {
1740 err = mono_mprotect (page_start, (page_end - page_start), MONO_MMAP_NONE);
1741 g_assert (err == 0);
1748 aot_code_low_addr = MIN (aot_code_low_addr, (gsize)amodule->code);
1749 aot_code_high_addr = MAX (aot_code_high_addr, (gsize)amodule->code_end);
1751 g_hash_table_insert (aot_modules, assembly, amodule);
1754 mono_jit_info_add_aot_module (assembly->image, amodule->code, amodule->code_end);
1756 assembly->image->aot_module = amodule;
1758 if (mono_aot_only) {
1760 find_symbol (amodule->sofile, amodule->globals, "specific_trampolines_page", (gpointer *)&code);
1761 amodule->use_page_trampolines = code != NULL;
1762 /*g_warning ("using page trampolines: %d", amodule->use_page_trampolines);*/
1763 if (mono_defaults.corlib) {
1764 /* The second got slot contains the mscorlib got addr */
1765 MonoAotModule *mscorlib_amodule = mono_defaults.corlib->aot_module;
1767 amodule->got [1] = mscorlib_amodule->got;
1769 amodule->got [1] = amodule->got;
1773 if (mono_gc_is_moving ()) {
1776 memset (&ji, 0, sizeof (ji));
1777 ji.type = MONO_PATCH_INFO_GC_CARD_TABLE_ADDR;
1779 amodule->got [2] = mono_resolve_patch_target (NULL, mono_get_root_domain (), NULL, &ji, FALSE);
1783 * Since we store methoddef and classdef tokens when referring to methods/classes in
1784 * referenced assemblies, we depend on the exact versions of the referenced assemblies.
1785 * MS calls this 'hard binding'. This means we have to load all referenced assemblies
1786 * non-lazily, since we can't handle out-of-date errors later.
1787 * The cached class info also depends on the exact assemblies.
1789 #if defined(__native_client__)
1790 /* TODO: Don't 'load_image' on mscorlib due to a */
1791 /* recursive loading problem. This should be */
1792 /* removed if mscorlib is loaded from disk. */
1793 if (strncmp(assembly->aname.name, "mscorlib", 8)) {
1794 do_load_image = TRUE;
1796 do_load_image = FALSE;
1799 if (do_load_image) {
1800 for (i = 0; i < amodule->image_table_len; ++i)
1801 load_image (amodule, i, FALSE);
1804 if (amodule->out_of_date) {
1805 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);
1806 if (mono_aot_only) {
1807 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);
1812 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT loaded AOT Module for %s.\n", assembly->image->name);
1816 * mono_aot_register_globals:
1818 * This is called by the ctor function in AOT images compiled with the
1819 * 'no-dlsym' option.
1822 mono_aot_register_globals (gpointer *globals)
1824 g_assert_not_reached ();
1828 * mono_aot_register_module:
1830 * This should be called by embedding code to register AOT modules statically linked
1831 * into the executable. AOT_INFO should be the value of the
1832 * 'mono_aot_module_<ASSEMBLY_NAME>_info' global symbol from the AOT module.
1835 mono_aot_register_module (gpointer *aot_info)
1839 MonoAotFileInfo *info = (gpointer)aot_info;
1841 g_assert (info->version == MONO_AOT_FILE_VERSION);
1843 globals = info->globals;
1846 aname = info->assembly_name;
1848 /* This could be called before startup */
1852 if (!static_aot_modules)
1853 static_aot_modules = g_hash_table_new (g_str_hash, g_str_equal);
1855 g_hash_table_insert (static_aot_modules, aname, info);
1862 mono_aot_init (void)
1864 InitializeCriticalSection (&aot_mutex);
1865 InitializeCriticalSection (&aot_page_mutex);
1866 aot_modules = g_hash_table_new (NULL, NULL);
1868 #ifndef __native_client__
1869 mono_install_assembly_load_hook (load_aot_module, NULL);
1872 if (g_getenv ("MONO_LASTAOT"))
1873 mono_last_aot_method = atoi (g_getenv ("MONO_LASTAOT"));
1874 if (g_getenv ("MONO_AOT_CACHE"))
1875 use_aot_cache = TRUE;
1879 mono_aot_cleanup (void)
1881 if (aot_jit_icall_hash)
1882 g_hash_table_destroy (aot_jit_icall_hash);
1884 g_hash_table_destroy (aot_modules);
1888 decode_cached_class_info (MonoAotModule *module, MonoCachedClassInfo *info, guint8 *buf, guint8 **endbuf)
1894 info->vtable_size = decode_value (buf, &buf);
1895 if (info->vtable_size == -1)
1898 flags = decode_value (buf, &buf);
1899 info->ghcimpl = (flags >> 0) & 0x1;
1900 info->has_finalize = (flags >> 1) & 0x1;
1901 info->has_cctor = (flags >> 2) & 0x1;
1902 info->has_nested_classes = (flags >> 3) & 0x1;
1903 info->blittable = (flags >> 4) & 0x1;
1904 info->has_references = (flags >> 5) & 0x1;
1905 info->has_static_refs = (flags >> 6) & 0x1;
1906 info->no_special_static_fields = (flags >> 7) & 0x1;
1907 info->is_generic_container = (flags >> 8) & 0x1;
1909 if (info->has_cctor) {
1910 res = decode_method_ref (module, &ref, buf, &buf);
1913 info->cctor_token = ref.token;
1915 if (info->has_finalize) {
1916 res = decode_method_ref (module, &ref, buf, &buf);
1919 info->finalize_image = ref.image;
1920 info->finalize_token = ref.token;
1923 info->instance_size = decode_value (buf, &buf);
1924 info->class_size = decode_value (buf, &buf);
1925 info->packing_size = decode_value (buf, &buf);
1926 info->min_align = decode_value (buf, &buf);
1934 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
1937 MonoClass *klass = vtable->klass;
1938 MonoAotModule *amodule = klass->image->aot_module;
1940 MonoCachedClassInfo class_info;
1945 if (MONO_CLASS_IS_INTERFACE (klass) || klass->rank || !amodule)
1948 info = &amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
1951 err = decode_cached_class_info (amodule, &class_info, p, &p);
1955 for (i = 0; i < slot; ++i)
1956 decode_method_ref (amodule, &ref, p, &p);
1958 res = decode_method_ref (amodule, &ref, p, &p);
1961 if (ref.no_aot_trampoline)
1964 if (mono_metadata_token_index (ref.token) == 0 || mono_metadata_token_table (ref.token) != MONO_TABLE_METHOD)
1967 return mono_aot_get_method_from_token (domain, ref.image, ref.token);
1971 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
1973 MonoAotModule *amodule = klass->image->aot_module;
1977 if (klass->rank || !amodule)
1980 p = (guint8*)&amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
1982 err = decode_cached_class_info (amodule, res, p, &p);
1990 * mono_aot_get_class_from_name:
1992 * Obtains a MonoClass with a given namespace and a given name which is located in IMAGE,
1993 * using a cache stored in the AOT file.
1994 * Stores the resulting class in *KLASS if found, stores NULL otherwise.
1996 * Returns: TRUE if the klass was found/not found in the cache, FALSE if no aot file was
2000 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
2002 MonoAotModule *amodule = image->aot_module;
2003 guint16 *table, *entry;
2006 char full_name_buf [1024];
2008 const char *name2, *name_space2;
2010 guint32 cols [MONO_TYPEDEF_SIZE];
2011 GHashTable *nspace_table;
2013 if (!amodule || !amodule->class_name_table)
2020 /* First look in the cache */
2021 if (!amodule->name_cache)
2022 amodule->name_cache = g_hash_table_new (g_str_hash, g_str_equal);
2023 nspace_table = g_hash_table_lookup (amodule->name_cache, name_space);
2025 *klass = g_hash_table_lookup (nspace_table, name);
2032 table_size = amodule->class_name_table [0];
2033 table = amodule->class_name_table + 1;
2035 if (name_space [0] == '\0')
2036 full_name = g_strdup_printf ("%s", name);
2038 if (strlen (name_space) + strlen (name) < 1000) {
2039 sprintf (full_name_buf, "%s.%s", name_space, name);
2040 full_name = full_name_buf;
2042 full_name = g_strdup_printf ("%s.%s", name_space, name);
2045 hash = mono_metadata_str_hash (full_name) % table_size;
2046 if (full_name != full_name_buf)
2049 entry = &table [hash * 2];
2051 if (entry [0] != 0) {
2052 t = &image->tables [MONO_TABLE_TYPEDEF];
2055 guint32 index = entry [0];
2056 guint32 next = entry [1];
2057 guint32 token = mono_metadata_make_token (MONO_TABLE_TYPEDEF, index);
2059 name_table_accesses ++;
2061 mono_metadata_decode_row (t, index - 1, cols, MONO_TYPEDEF_SIZE);
2063 name2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
2064 name_space2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
2066 if (!strcmp (name, name2) && !strcmp (name_space, name_space2)) {
2068 *klass = mono_class_get (image, token);
2073 nspace_table = g_hash_table_lookup (amodule->name_cache, name_space);
2074 if (!nspace_table) {
2075 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
2076 g_hash_table_insert (amodule->name_cache, (char*)name_space2, nspace_table);
2078 g_hash_table_insert (nspace_table, (char*)name2, *klass);
2085 entry = &table [next * 2];
2098 * decode_mono_eh_frame:
2100 * Decode the EH information emitted by our modified LLVM compiler and construct a
2101 * MonoJitInfo structure from it.
2102 * LOCKING: Acquires the domain lock.
2105 decode_llvm_mono_eh_frame (MonoAotModule *amodule, MonoDomain *domain,
2106 MonoMethod *method, guint8 *code,
2107 MonoJitExceptionInfo *clauses, int num_clauses,
2108 int extra_size, GSList **nesting,
2109 int *this_reg, int *this_offset)
2112 guint8 *fde, *cie, *code_start, *code_end;
2113 int version, fde_count;
2115 int i, j, pos, left, right, offset, offset1, offset2, code_len, func_encoding;
2116 MonoJitExceptionInfo *ei;
2117 guint32 fde_len, ei_len, nested_len, nindex;
2118 gpointer *type_info;
2120 MonoLLVMFDEInfo info;
2122 g_assert (amodule->mono_eh_frame);
2124 p = amodule->mono_eh_frame;
2126 /* p points to data emitted by LLVM in DwarfException::EmitMonoEHFrame () */
2130 g_assert (version == 1 || version == 2);
2136 func_encoding = DW_EH_PE_pcrel;
2138 p = ALIGN_PTR_TO (p, 4);
2140 fde_count = *(guint32*)p;
2144 /* There is +1 entry in the table */
2145 cie = p + ((fde_count + 1) * 8);
2147 /* Binary search in the table to find the entry for code */
2148 if (func_encoding == DW_EH_PE_absptr) {
2150 * Table entries are encoded as DW_EH_PE_absptr, because the ios linker can move functions inside object files to make thumb work,
2151 * so the offsets between two symbols in the text segment are not assembler constant.
2153 g_assert (sizeof(gpointer) == 4);
2154 offset = GPOINTER_TO_INT (code);
2156 /* Table entries are encoded as DW_EH_PE_pcrel relative to mono_eh_frame */
2157 offset = code - amodule->mono_eh_frame;
2163 pos = (left + right) / 2;
2165 offset1 = table [(pos * 2)];
2166 if (pos + 1 == fde_count) {
2167 if (func_encoding == DW_EH_PE_absptr)
2168 offset2 = GPOINTER_TO_INT (amodule->code_end);
2170 offset2 = amodule->code_end - amodule->code;
2172 offset2 = table [(pos + 1) * 2];
2175 if (offset < offset1)
2177 else if (offset >= offset2)
2183 if (func_encoding == DW_EH_PE_absptr) {
2184 code_start = (gpointer)(gsize)table [(pos * 2)];
2185 code_end = (gpointer)(gsize)table [(pos * 2) + 2];
2187 code_start = amodule->mono_eh_frame + table [(pos * 2)];
2188 /* This won't overflow because there is +1 entry in the table */
2189 code_end = amodule->mono_eh_frame + table [(pos * 2) + 2];
2191 code_len = code_end - code_start;
2193 g_assert (code >= code_start && code < code_end);
2195 if (amodule->thumb_end && (guint8*)code_start < amodule->thumb_end)
2196 /* Clear thumb flag */
2197 code_start = (guint8*)(((mgreg_t)code_start) & ~1);
2199 fde = amodule->mono_eh_frame + table [(pos * 2) + 1];
2200 /* This won't overflow because there is +1 entry in the table */
2201 fde_len = table [(pos * 2) + 2 + 1] - table [(pos * 2) + 1];
2203 mono_unwind_decode_llvm_mono_fde (fde, fde_len, cie, code_start, &info);
2205 ei_len = info.ex_info_len;
2206 type_info = info.type_info;
2207 *this_reg = info.this_reg;
2208 *this_offset = info.this_offset;
2210 /* Count number of nested clauses */
2212 for (i = 0; i < ei_len; ++i) {
2213 /* This might be unaligned */
2214 gint32 cindex1 = read32 (type_info [i]);
2217 for (l = nesting [cindex1]; l; l = l->next) {
2218 gint32 nesting_cindex = GPOINTER_TO_INT (l->data);
2220 for (j = 0; j < ei_len; ++j) {
2221 gint32 cindex2 = read32 (type_info [j]);
2223 if (cindex2 == nesting_cindex)
2230 * LLVM might represent one IL region with multiple regions, so have to
2231 * allocate a new JI.
2234 mono_domain_alloc0 (domain, MONO_SIZEOF_JIT_INFO + (sizeof (MonoJitExceptionInfo) * (ei_len + nested_len)) + extra_size);
2236 jinfo->code_size = code_len;
2237 jinfo->used_regs = mono_cache_unwind_info (info.unw_info, info.unw_info_len);
2238 jinfo->method = method;
2239 jinfo->code_start = code;
2240 jinfo->domain_neutral = 0;
2241 /* This signals that used_regs points to a normal cached unwind info */
2242 jinfo->from_aot = 0;
2243 jinfo->num_clauses = ei_len + nested_len;
2245 for (i = 0; i < ei_len; ++i) {
2247 * orig_jinfo contains the original IL exception info saved by the AOT
2248 * compiler, we have to combine that with the information produced by LLVM
2250 /* The type_info entries contain IL clause indexes */
2251 int clause_index = read32 (type_info [i]);
2252 MonoJitExceptionInfo *jei = &jinfo->clauses [i];
2253 MonoJitExceptionInfo *orig_jei = &clauses [clause_index];
2255 g_assert (clause_index < num_clauses);
2256 jei->flags = orig_jei->flags;
2257 jei->data.catch_class = orig_jei->data.catch_class;
2259 jei->try_start = ei [i].try_start;
2260 jei->try_end = ei [i].try_end;
2261 jei->handler_start = ei [i].handler_start;
2263 /* Make sure we transition to thumb when a handler starts */
2264 if (amodule->thumb_end && (guint8*)jei->handler_start < amodule->thumb_end)
2265 jei->handler_start = (void*)((mgreg_t)jei->handler_start + 1);
2268 /* See exception_cb () in mini-llvm.c as to why this is needed */
2270 for (i = 0; i < ei_len; ++i) {
2271 gint32 cindex1 = read32 (type_info [i]);
2274 for (l = nesting [cindex1]; l; l = l->next) {
2275 gint32 nesting_cindex = GPOINTER_TO_INT (l->data);
2277 for (j = 0; j < ei_len; ++j) {
2278 gint32 cindex2 = read32 (type_info [j]);
2280 if (cindex2 == nesting_cindex) {
2282 * The try interval comes from the nested clause, everything else from the
2285 memcpy (&jinfo->clauses [nindex], &jinfo->clauses [j], sizeof (MonoJitExceptionInfo));
2286 jinfo->clauses [nindex].try_start = jinfo->clauses [i].try_start;
2287 jinfo->clauses [nindex].try_end = jinfo->clauses [i].try_end;
2293 g_assert (nindex == ei_len + nested_len);
2299 * LOCKING: Acquires the domain lock.
2302 decode_exception_debug_info (MonoAotModule *amodule, MonoDomain *domain,
2303 MonoMethod *method, guint8* ex_info, guint8 *addr,
2304 guint8 *code, guint32 code_len)
2306 int i, buf_len, num_clauses;
2308 guint used_int_regs, flags;
2309 gboolean has_generic_jit_info, has_dwarf_unwind_info, has_clauses, has_seq_points, has_try_block_holes, has_arch_eh_jit_info;
2310 gboolean from_llvm, has_gc_map;
2312 int generic_info_size, try_holes_info_size, num_holes, arch_eh_jit_info_size;
2313 int this_reg = 0, this_offset = 0;
2315 /* Load the method info from the AOT file */
2318 flags = decode_value (p, &p);
2319 has_generic_jit_info = (flags & 1) != 0;
2320 has_dwarf_unwind_info = (flags & 2) != 0;
2321 has_clauses = (flags & 4) != 0;
2322 has_seq_points = (flags & 8) != 0;
2323 from_llvm = (flags & 16) != 0;
2324 has_try_block_holes = (flags & 32) != 0;
2325 has_gc_map = (flags & 64) != 0;
2326 has_arch_eh_jit_info = (flags & 128) != 0;
2328 if (has_dwarf_unwind_info) {
2331 offset = decode_value (p, &p);
2332 g_assert (offset < (1 << 30));
2333 used_int_regs = offset;
2335 used_int_regs = decode_value (p, &p);
2337 if (has_generic_jit_info)
2338 generic_info_size = sizeof (MonoGenericJitInfo);
2340 generic_info_size = 0;
2342 if (has_try_block_holes) {
2343 num_holes = decode_value (p, &p);
2344 try_holes_info_size = sizeof (MonoTryBlockHoleTableJitInfo) + num_holes * sizeof (MonoTryBlockHoleJitInfo);
2346 num_holes = try_holes_info_size = 0;
2348 /* Exception table */
2350 num_clauses = decode_value (p, &p);
2353 if (has_arch_eh_jit_info)
2354 arch_eh_jit_info_size = sizeof (MonoArchEHJitInfo);
2356 arch_eh_jit_info_size = 0;
2359 MonoJitExceptionInfo *clauses;
2363 * Part of the info is encoded by the AOT compiler, the rest is in the .eh_frame
2366 clauses = g_new0 (MonoJitExceptionInfo, num_clauses);
2367 nesting = g_new0 (GSList*, num_clauses);
2369 for (i = 0; i < num_clauses; ++i) {
2370 MonoJitExceptionInfo *ei = &clauses [i];
2372 ei->flags = decode_value (p, &p);
2374 if (decode_value (p, &p))
2375 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
2377 /* Read the list of nesting clauses */
2379 int nesting_index = decode_value (p, &p);
2380 if (nesting_index == -1)
2382 nesting [i] = g_slist_prepend (nesting [i], GINT_TO_POINTER (nesting_index));
2386 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);
2387 jinfo->from_llvm = 1;
2390 for (i = 0; i < num_clauses; ++i)
2391 g_slist_free (nesting [i]);
2395 mono_domain_alloc0 (domain, MONO_SIZEOF_JIT_INFO + (sizeof (MonoJitExceptionInfo) * num_clauses) + generic_info_size + try_holes_info_size + arch_eh_jit_info_size);
2396 jinfo->num_clauses = num_clauses;
2398 for (i = 0; i < jinfo->num_clauses; ++i) {
2399 MonoJitExceptionInfo *ei = &jinfo->clauses [i];
2401 ei->flags = decode_value (p, &p);
2403 ei->exvar_offset = decode_value (p, &p);
2405 if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER || ei->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
2406 ei->data.filter = code + decode_value (p, &p);
2408 if (decode_value (p, &p))
2409 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
2412 ei->try_start = code + decode_value (p, &p);
2413 ei->try_end = code + decode_value (p, &p);
2414 ei->handler_start = code + decode_value (p, &p);
2417 jinfo->code_size = code_len;
2418 jinfo->used_regs = used_int_regs;
2419 jinfo->method = method;
2420 jinfo->code_start = code;
2421 jinfo->domain_neutral = 0;
2422 jinfo->from_aot = 1;
2425 if (has_generic_jit_info) {
2426 MonoGenericJitInfo *gi;
2428 jinfo->has_generic_jit_info = 1;
2430 gi = mono_jit_info_get_generic_jit_info (jinfo);
2433 gi->nlocs = decode_value (p, &p);
2435 gi->locations = mono_domain_alloc0 (domain, gi->nlocs * sizeof (MonoDwarfLocListEntry));
2436 for (i = 0; i < gi->nlocs; ++i) {
2437 MonoDwarfLocListEntry *entry = &gi->locations [i];
2439 entry->is_reg = decode_value (p, &p);
2440 entry->reg = decode_value (p, &p);
2442 entry->offset = decode_value (p, &p);
2444 entry->from = decode_value (p, &p);
2445 entry->to = decode_value (p, &p);
2449 gi->has_this = this_reg != -1;
2450 gi->this_reg = this_reg;
2451 gi->this_offset = this_offset;
2453 gi->has_this = decode_value (p, &p);
2454 gi->this_reg = decode_value (p, &p);
2455 gi->this_offset = decode_value (p, &p);
2459 jinfo->method = decode_resolve_method_ref (amodule, p, &p);
2461 gi->generic_sharing_context = g_new0 (MonoGenericSharingContext, 1);
2462 if (decode_value (p, &p)) {
2465 MonoGenericSharingContext *gsctx = gi->generic_sharing_context;
2467 n = decode_value (p, &p);
2469 gsctx->var_is_vt = g_new0 (gboolean, n);
2470 for (i = 0; i < n; ++i)
2471 gsctx->var_is_vt [i] = decode_value (p, &p);
2473 n = decode_value (p, &p);
2475 gsctx->mvar_is_vt = g_new0 (gboolean, n);
2476 for (i = 0; i < n; ++i)
2477 gsctx->mvar_is_vt [i] = decode_value (p, &p);
2482 if (has_try_block_holes) {
2483 MonoTryBlockHoleTableJitInfo *table;
2485 jinfo->has_try_block_holes = 1;
2487 table = mono_jit_info_get_try_block_hole_table_info (jinfo);
2490 table->num_holes = (guint16)num_holes;
2491 for (i = 0; i < num_holes; ++i) {
2492 MonoTryBlockHoleJitInfo *hole = &table->holes [i];
2493 hole->clause = decode_value (p, &p);
2494 hole->length = decode_value (p, &p);
2495 hole->offset = decode_value (p, &p);
2499 if (has_arch_eh_jit_info) {
2500 MonoArchEHJitInfo *eh_info;
2502 jinfo->has_arch_eh_info = 1;
2504 eh_info = mono_jit_info_get_arch_eh_info (jinfo);
2505 eh_info->stack_size = decode_value (p, &p);
2508 if (has_seq_points) {
2509 MonoSeqPointInfo *seq_points;
2510 int il_offset, native_offset, last_il_offset, last_native_offset, j;
2512 int len = decode_value (p, &p);
2514 seq_points = g_malloc0 (sizeof (MonoSeqPointInfo) + (len - MONO_ZERO_LEN_ARRAY) * sizeof (SeqPoint));
2515 seq_points->len = len;
2516 last_il_offset = last_native_offset = 0;
2517 for (i = 0; i < len; ++i) {
2518 SeqPoint *sp = &seq_points->seq_points [i];
2519 il_offset = last_il_offset + decode_value (p, &p);
2520 native_offset = last_native_offset + decode_value (p, &p);
2522 sp->il_offset = il_offset;
2523 sp->native_offset = native_offset;
2525 sp->next_len = decode_value (p, &p);
2526 sp->next = g_new (int, sp->next_len);
2527 for (j = 0; j < sp->next_len; ++j)
2528 sp->next [j] = decode_value (p, &p);
2530 last_il_offset = il_offset;
2531 last_native_offset = native_offset;
2534 mono_domain_lock (domain);
2535 g_hash_table_insert (domain_jit_info (domain)->seq_points, method, seq_points);
2536 mono_domain_unlock (domain);
2539 /* Load debug info */
2540 buf_len = decode_value (p, &p);
2541 mono_debug_add_aot_method (domain, method, code, p, buf_len);
2545 int map_size = decode_value (p, &p);
2546 /* The GC map requires 4 bytes of alignment */
2547 while ((guint64)(gsize)p % 4)
2553 if (amodule != jinfo->method->klass->image->aot_module) {
2556 ji_to_amodule = g_hash_table_new (NULL, NULL);
2557 g_hash_table_insert (ji_to_amodule, jinfo, amodule);
2565 * mono_aot_get_unwind_info:
2567 * Return a pointer to the DWARF unwind info belonging to JI.
2570 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
2572 MonoAotModule *amodule = ji->method->klass->image->aot_module;
2574 guint8 *code = ji->code_start;
2577 g_assert (ji->from_aot);
2579 if (!(code >= amodule->code && code <= amodule->code_end)) {
2580 /* ji belongs to a different aot module than amodule */
2582 g_assert (ji_to_amodule);
2583 amodule = g_hash_table_lookup (ji_to_amodule, ji);
2585 g_assert (code >= amodule->code && code <= amodule->code_end);
2589 p = amodule->unwind_info + ji->used_regs;
2590 *unwind_info_len = decode_value (p, &p);
2594 static G_GNUC_UNUSED int
2595 compare_ints (const void *a, const void *b)
2597 return *(gint32*)a - *(gint32*)b;
2601 msort_code_offsets_internal (gint32 *array, int lo, int hi, gint32 *scratch)
2603 int mid = (lo + hi) / 2;
2610 for (i = lo; i < hi; ++i)
2611 if (array [(i * 2)] > array [(i * 2) + 2])
2614 /* Already sorted */
2618 msort_code_offsets_internal (array, lo, mid, scratch);
2619 msort_code_offsets_internal (array, mid + 1, hi, scratch);
2621 if (array [mid * 2] < array [(mid + 1) * 2])
2627 for (i = lo; i <= hi; i ++) {
2628 if (t_lo <= mid && ((t_hi > hi) || array [t_lo * 2] < array [t_hi * 2])) {
2629 scratch [(i * 2)] = array [t_lo * 2];
2630 scratch [(i * 2) + 1] = array [(t_lo *2) + 1];
2633 scratch [(i * 2)] = array [t_hi * 2];
2634 scratch [(i * 2) + 1] = array [(t_hi *2) + 1];
2638 for (i = lo; i <= hi; ++i) {
2639 array [(i * 2)] = scratch [i * 2];
2640 array [(i * 2) + 1] = scratch [(i * 2) + 1];
2645 msort_code_offsets (gint32 *array, int len)
2649 scratch = g_new (gint32, len * 2);
2650 msort_code_offsets_internal (array, 0, len - 1, scratch);
2655 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
2657 int pos, left, right, offset, offset1, offset2, code_len;
2658 int method_index, table_len;
2660 MonoAotModule *amodule = image->aot_module;
2663 guint8 *code, *ex_info, *p;
2665 int nmethods = amodule->info.nmethods;
2666 gint32 *code_offsets;
2672 if (domain != mono_get_root_domain ())
2676 offset = (guint8*)addr - amodule->code;
2678 /* Compute a sorted table mapping code offsets to method indexes. */
2679 if (!amodule->sorted_code_offsets) {
2680 code_offsets = g_new0 (gint32, nmethods * 2);
2682 for (i = 0; i < nmethods; ++i) {
2683 /* Skip the -1 entries to speed up sorting */
2684 if (amodule->code_offsets [i] == 0xffffffff)
2686 code_offsets [(offsets_len * 2)] = amodule->code_offsets [i];
2687 code_offsets [(offsets_len *2) + 1] = i;
2690 /* Use a merge sort as this is mostly sorted */
2691 msort_code_offsets (code_offsets, offsets_len);
2692 //qsort (code_offsets, offsets_len, sizeof (gint32) * 2, compare_ints);
2693 for (i = 0; i < offsets_len -1; ++i)
2694 g_assert (code_offsets [(i * 2)] <= code_offsets [(i + 1) * 2]);
2696 amodule->sorted_code_offsets_len = offsets_len;
2697 mono_memory_barrier ();
2698 if (InterlockedCompareExchangePointer ((gpointer*)&amodule->sorted_code_offsets, code_offsets, NULL) != NULL)
2699 /* Somebody got in before us */
2700 g_free (code_offsets);
2703 code_offsets = amodule->sorted_code_offsets;
2704 offsets_len = amodule->sorted_code_offsets_len;
2706 if (offsets_len > 0 && (offset < code_offsets [0] || offset >= (amodule->code_end - amodule->code)))
2709 /* Binary search in the sorted_code_offsets table */
2711 right = offsets_len;
2713 pos = (left + right) / 2;
2715 offset1 = code_offsets [(pos * 2)];
2716 if (pos + 1 == offsets_len)
2717 offset2 = amodule->code_end - amodule->code;
2719 offset2 = code_offsets [(pos + 1) * 2];
2721 if (offset < offset1)
2723 else if (offset >= offset2)
2729 g_assert (offset >= code_offsets [(pos * 2)]);
2730 if (pos + 1 < offsets_len)
2731 g_assert (offset < code_offsets [((pos + 1) * 2)]);
2732 method_index = code_offsets [(pos * 2) + 1];
2734 code = &amodule->code [amodule->code_offsets [method_index]];
2735 ex_info = &amodule->blob [mono_aot_get_offset (amodule->ex_info_offsets, method_index)];
2737 if (pos == offsets_len - 1)
2738 code_len = amodule->code_end - code;
2740 code_len = code_offsets [(pos + 1) * 2] - code_offsets [pos * 2];
2742 g_assert ((guint8*)code <= (guint8*)addr && (guint8*)addr < (guint8*)code + code_len);
2744 /* Might be a wrapper/extra method */
2745 if (amodule->extra_methods) {
2747 method = g_hash_table_lookup (amodule->extra_methods, GUINT_TO_POINTER (method_index));
2754 if (method_index >= image->tables [MONO_TABLE_METHOD].rows) {
2756 * This is hit for extra methods which are called directly, so they are
2757 * not in amodule->extra_methods.
2759 table_len = amodule->extra_method_info_offsets [0];
2760 table = amodule->extra_method_info_offsets + 1;
2767 pos = ((left + right) / 2);
2769 g_assert (pos < table_len);
2771 if (table [pos * 2] < method_index)
2773 else if (table [pos * 2] > method_index)
2779 p = amodule->blob + table [(pos * 2) + 1];
2780 method = decode_resolve_method_ref (amodule, p, &p);
2782 /* Happens when a random address is passed in which matches a not-yey called wrapper encoded using its name */
2785 token = mono_metadata_make_token (MONO_TABLE_METHOD, method_index + 1);
2786 method = mono_get_method (image, token, NULL);
2793 //printf ("F: %s\n", mono_method_full_name (method, TRUE));
2795 jinfo = decode_exception_debug_info (amodule, domain, method, ex_info, addr, code, code_len);
2797 g_assert ((guint8*)addr >= (guint8*)jinfo->code_start);
2798 g_assert ((guint8*)addr < (guint8*)jinfo->code_start + jinfo->code_size);
2800 /* Add it to the normal JitInfo tables */
2801 mono_jit_info_table_add (domain, jinfo);
2807 decode_patch (MonoAotModule *aot_module, MonoMemPool *mp, MonoJumpInfo *ji, guint8 *buf, guint8 **endbuf)
2815 case MONO_PATCH_INFO_METHOD:
2816 case MONO_PATCH_INFO_METHOD_JUMP:
2817 case MONO_PATCH_INFO_ICALL_ADDR:
2818 case MONO_PATCH_INFO_METHOD_RGCTX: {
2822 res = decode_method_ref (aot_module, &ref, p, &p);
2826 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)) {
2827 ji->data.target = mono_create_ftnptr (mono_domain_get (), mono_create_jit_trampoline_from_token (ref.image, ref.token));
2828 ji->type = MONO_PATCH_INFO_ABS;
2832 ji->data.method = ref.method;
2834 ji->data.method = mono_get_method (ref.image, ref.token, NULL);
2835 g_assert (ji->data.method);
2836 mono_class_init (ji->data.method->klass);
2840 case MONO_PATCH_INFO_INTERNAL_METHOD:
2841 case MONO_PATCH_INFO_JIT_ICALL_ADDR: {
2842 guint32 len = decode_value (p, &p);
2844 ji->data.name = (char*)p;
2848 case MONO_PATCH_INFO_METHODCONST:
2850 ji->data.method = decode_resolve_method_ref (aot_module, p, &p);
2851 if (!ji->data.method)
2854 case MONO_PATCH_INFO_VTABLE:
2855 case MONO_PATCH_INFO_CLASS:
2856 case MONO_PATCH_INFO_IID:
2857 case MONO_PATCH_INFO_ADJUSTED_IID:
2859 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2860 if (!ji->data.klass)
2863 case MONO_PATCH_INFO_CLASS_INIT:
2864 case MONO_PATCH_INFO_DELEGATE_TRAMPOLINE:
2865 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2866 if (!ji->data.klass)
2869 case MONO_PATCH_INFO_IMAGE:
2870 ji->data.image = load_image (aot_module, decode_value (p, &p), TRUE);
2871 if (!ji->data.image)
2874 case MONO_PATCH_INFO_FIELD:
2875 case MONO_PATCH_INFO_SFLDA:
2877 ji->data.field = decode_field_info (aot_module, p, &p);
2878 if (!ji->data.field)
2881 case MONO_PATCH_INFO_SWITCH:
2882 ji->data.table = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoBBTable));
2883 ji->data.table->table_size = decode_value (p, &p);
2884 table = mono_domain_alloc (mono_domain_get (), sizeof (gpointer) * ji->data.table->table_size);
2885 ji->data.table->table = (MonoBasicBlock**)table;
2886 for (i = 0; i < ji->data.table->table_size; i++)
2887 table [i] = (gpointer)(gssize)decode_value (p, &p);
2889 case MONO_PATCH_INFO_R4: {
2892 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (float));
2893 val = decode_value (p, &p);
2894 *(float*)ji->data.target = *(float*)&val;
2897 case MONO_PATCH_INFO_R8: {
2901 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (double));
2903 val [0] = decode_value (p, &p);
2904 val [1] = decode_value (p, &p);
2905 v = ((guint64)val [1] << 32) | ((guint64)val [0]);
2906 *(double*)ji->data.target = *(double*)&v;
2909 case MONO_PATCH_INFO_LDSTR:
2910 image = load_image (aot_module, decode_value (p, &p), TRUE);
2913 ji->data.token = mono_jump_info_token_new (mp, image, MONO_TOKEN_STRING + decode_value (p, &p));
2915 case MONO_PATCH_INFO_RVA:
2916 case MONO_PATCH_INFO_DECLSEC:
2917 case MONO_PATCH_INFO_LDTOKEN:
2918 case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
2920 image = load_image (aot_module, decode_value (p, &p), TRUE);
2923 ji->data.token = mono_jump_info_token_new (mp, image, decode_value (p, &p));
2925 ji->data.token->has_context = decode_value (p, &p);
2926 if (ji->data.token->has_context) {
2927 gboolean res = decode_generic_context (aot_module, &ji->data.token->context, p, &p);
2932 case MONO_PATCH_INFO_EXC_NAME:
2933 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2934 if (!ji->data.klass)
2936 ji->data.name = ji->data.klass->name;
2938 case MONO_PATCH_INFO_METHOD_REL:
2939 ji->data.offset = decode_value (p, &p);
2941 case MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG:
2942 case MONO_PATCH_INFO_GENERIC_CLASS_INIT:
2943 case MONO_PATCH_INFO_MONITOR_ENTER:
2944 case MONO_PATCH_INFO_MONITOR_EXIT:
2945 case MONO_PATCH_INFO_GC_CARD_TABLE_ADDR:
2946 case MONO_PATCH_INFO_CASTCLASS_CACHE:
2947 case MONO_PATCH_INFO_JIT_TLS_ID:
2949 case MONO_PATCH_INFO_RGCTX_FETCH: {
2951 MonoJumpInfoRgctxEntry *entry;
2952 guint32 offset, val;
2955 offset = decode_value (p, &p);
2956 val = decode_value (p, &p);
2958 entry = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
2959 p2 = aot_module->blob + offset;
2960 entry->method = decode_resolve_method_ref (aot_module, p2, &p2);
2961 entry->in_mrgctx = ((val & 1) > 0) ? TRUE : FALSE;
2962 entry->info_type = (val >> 1) & 0xff;
2963 entry->data = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
2964 entry->data->type = (val >> 9) & 0xff;
2966 res = decode_patch (aot_module, mp, entry->data, p, &p);
2969 ji->data.rgctx_entry = entry;
2972 case MONO_PATCH_INFO_SEQ_POINT_INFO:
2974 case MONO_PATCH_INFO_LLVM_IMT_TRAMPOLINE: {
2975 MonoJumpInfoImtTramp *imt_tramp = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoImtTramp));
2977 imt_tramp->method = decode_resolve_method_ref (aot_module, p, &p);
2978 imt_tramp->vt_offset = decode_value (p, &p);
2980 ji->data.imt_tramp = imt_tramp;
2983 case MONO_PATCH_INFO_SIGNATURE:
2984 ji->data.target = decode_signature (aot_module, p, &p);
2986 case MONO_PATCH_INFO_GSHAREDVT_CALL: {
2987 MonoJumpInfoGSharedVtCall *info = g_new0 (MonoJumpInfoGSharedVtCall, 1);
2988 info->sig = decode_signature (aot_module, p, &p);
2989 g_assert (info->sig);
2990 info->method = decode_resolve_method_ref (aot_module, p, &p);
2991 g_assert (info->method);
2993 ji->data.target = info;
2997 g_warning ("unhandled type %d", ji->type);
2998 g_assert_not_reached ();
3009 static MonoJumpInfo*
3010 load_patch_info (MonoAotModule *aot_module, MonoMemPool *mp, int n_patches,
3011 guint32 **got_slots,
3012 guint8 *buf, guint8 **endbuf)
3014 MonoJumpInfo *patches;
3020 patches = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo) * n_patches);
3022 *got_slots = g_malloc (sizeof (guint32) * n_patches);
3024 for (pindex = 0; pindex < n_patches; ++pindex) {
3025 MonoJumpInfo *ji = &patches [pindex];
3030 got_offset = decode_value (p, &p);
3032 if (aot_module->got [got_offset]) {
3033 /* Already loaded */
3034 //printf ("HIT!\n");
3036 shared_p = aot_module->blob + mono_aot_get_offset (aot_module->got_info_offsets, got_offset);
3038 ji->type = decode_value (shared_p, &shared_p);
3040 res = decode_patch (aot_module, mp, ji, shared_p, &shared_p);
3045 (*got_slots) [pindex] = got_offset;
3052 g_free (*got_slots);
3059 register_jump_target_got_slot (MonoDomain *domain, MonoMethod *method, gpointer *got_slot)
3062 * Jump addresses cannot be patched by the trampoline code since it
3063 * does not have access to the caller's address. Instead, we collect
3064 * the addresses of the GOT slots pointing to a method, and patch
3065 * them after the method has been compiled.
3067 MonoJitDomainInfo *info = domain_jit_info (domain);
3070 mono_domain_lock (domain);
3071 if (!info->jump_target_got_slot_hash)
3072 info->jump_target_got_slot_hash = g_hash_table_new (NULL, NULL);
3073 list = g_hash_table_lookup (info->jump_target_got_slot_hash, method);
3074 list = g_slist_prepend (list, got_slot);
3075 g_hash_table_insert (info->jump_target_got_slot_hash, method, list);
3076 mono_domain_unlock (domain);
3082 * Load the method identified by METHOD_INDEX from the AOT image. Return a
3083 * pointer to the native code of the method, or NULL if not found.
3084 * METHOD might not be set if the caller only has the image/token info.
3087 load_method (MonoDomain *domain, MonoAotModule *amodule, MonoImage *image, MonoMethod *method, guint32 token, int method_index)
3090 gboolean from_plt = method == NULL;
3092 int i, pindex, n_patches, used_strings;
3093 gboolean keep_patches = TRUE;
3095 MonoJitInfo *jinfo = NULL;
3096 guint8 *code, *info;
3098 if (mono_profiler_get_events () & MONO_PROFILE_ENTER_LEAVE)
3101 if ((domain != mono_get_root_domain ()) && (!(amodule->info.opts & MONO_OPT_SHARED)))
3102 /* Non shared AOT code can't be used in other appdomains */
3105 if (amodule->out_of_date)
3108 if (amodule->code_offsets [method_index] == 0xffffffff) {
3109 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
3113 method = mono_get_method (image, token, NULL);
3114 full_name = mono_method_full_name (method, TRUE);
3115 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.", full_name);
3121 code = &amodule->code [amodule->code_offsets [method_index]];
3123 info = &amodule->blob [mono_aot_get_offset (amodule->method_info_offsets, method_index)];
3125 if (amodule->thumb_end && code < amodule->thumb_end && ((amodule->info.flags & MONO_AOT_FILE_FLAG_DIRECT_METHOD_ADDRESSES) == 0)) {
3126 /* Convert this into a thumb address */
3127 g_assert ((amodule->code_offsets [method_index] & 0x1) == 0);
3128 code = &amodule->code [amodule->code_offsets [method_index] + 1];
3132 if (!amodule->methods_loaded)
3133 amodule->methods_loaded = g_new0 (guint32, amodule->info.nmethods / 32 + 1);
3136 if ((amodule->methods_loaded [method_index / 32] >> (method_index % 32)) & 0x1)
3139 if (mono_last_aot_method != -1) {
3140 if (mono_jit_stats.methods_aot >= mono_last_aot_method)
3142 else if (mono_jit_stats.methods_aot == mono_last_aot_method - 1) {
3144 method = mono_get_method (image, token, NULL);
3146 char *name = mono_method_full_name (method, TRUE);
3147 printf ("LAST AOT METHOD: %s.\n", name);
3150 printf ("LAST AOT METHOD: %p %d\n", code, method_index);
3158 klass = method->klass;
3159 decode_klass_ref (amodule, p, &p);
3161 klass = decode_klass_ref (amodule, p, &p);
3164 if (amodule->info.opts & MONO_OPT_SHARED)
3165 used_strings = decode_value (p, &p);
3169 for (i = 0; i < used_strings; i++) {
3170 guint token = decode_value (p, &p);
3171 mono_ldstr (mono_get_root_domain (), image, mono_metadata_token_index (token));
3174 if (amodule->info.opts & MONO_OPT_SHARED)
3175 keep_patches = FALSE;
3177 n_patches = decode_value (p, &p);
3179 keep_patches = FALSE;
3182 MonoJumpInfo *patches;
3188 mp = mono_mempool_new ();
3190 patches = load_patch_info (amodule, mp, n_patches, &got_slots, p, &p);
3191 if (patches == NULL)
3194 for (pindex = 0; pindex < n_patches; ++pindex) {
3195 MonoJumpInfo *ji = &patches [pindex];
3197 if (!amodule->got [got_slots [pindex]]) {
3198 amodule->got [got_slots [pindex]] = mono_resolve_patch_target (method, domain, code, ji, TRUE);
3199 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
3200 amodule->got [got_slots [pindex]] = mono_create_ftnptr (domain, amodule->got [got_slots [pindex]]);
3201 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
3202 register_jump_target_got_slot (domain, ji->data.method, &(amodule->got [got_slots [pindex]]));
3204 ji->type = MONO_PATCH_INFO_NONE;
3210 mono_mempool_destroy (mp);
3213 if (mini_get_debug_options ()->load_aot_jit_info_eagerly)
3214 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
3216 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
3220 method = mono_get_method (image, token, NULL);
3222 full_name = mono_method_full_name (method, TRUE);
3225 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
3227 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT FOUND method %s [%p - %p %p]", full_name, code, code + jinfo->code_size, info);
3233 InterlockedIncrement (&mono_jit_stats.methods_aot);
3235 amodule->methods_loaded [method_index / 32] |= 1 << (method_index % 32);
3239 if (method && method->wrapper_type)
3240 g_hash_table_insert (amodule->method_to_code, method, code);
3244 if (mono_profiler_get_events () & MONO_PROFILE_JIT_COMPILATION) {
3248 method = mono_get_method (image, token, NULL);
3251 mono_profiler_method_jit (method);
3252 jinfo = mono_jit_info_table_find (domain, (char*)code);
3254 mono_profiler_method_end_jit (method, jinfo, MONO_PROFILE_OK);
3257 if (from_plt && klass && !klass->generic_container)
3258 mono_runtime_class_init (mono_class_vtable (domain, klass));
3263 /* FIXME: The space in domain->mp is wasted */
3264 if (amodule->info.opts & MONO_OPT_SHARED)
3265 /* No need to cache patches */
3266 mono_mempool_destroy (mp);
3275 find_extra_method_in_amodule (MonoAotModule *amodule, MonoMethod *method)
3277 guint32 table_size, entry_size, hash;
3278 guint32 *table, *entry;
3280 static guint32 n_extra_decodes;
3282 if (!amodule || amodule->out_of_date)
3285 table_size = amodule->extra_method_table [0];
3286 table = amodule->extra_method_table + 1;
3289 hash = mono_aot_method_hash (method) % table_size;
3291 entry = &table [hash * entry_size];
3298 guint32 key = entry [0];
3299 guint32 value = entry [1];
3300 guint32 next = entry [entry_size - 1];
3304 p = amodule->blob + key;
3308 if (!amodule->method_ref_to_method)
3309 amodule->method_ref_to_method = g_hash_table_new (NULL, NULL);
3310 m = g_hash_table_lookup (amodule->method_ref_to_method, p);
3313 m = decode_resolve_method_ref_with_target (amodule, method, p, &p);
3316 g_hash_table_insert (amodule->method_ref_to_method, orig_p, m);
3325 /* Special case: wrappers of shared generic methods */
3326 if (m && method->wrapper_type && m->wrapper_type == m->wrapper_type &&
3327 method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
3328 MonoMethod *w1 = mono_marshal_method_from_wrapper (method);
3329 MonoMethod *w2 = mono_marshal_method_from_wrapper (m);
3331 if (w1->is_inflated && ((MonoMethodInflated *)w1)->declaring == w2) {
3337 /* Methods decoded needlessly */
3339 //printf ("%d %s %s %p\n", n_extra_decodes, mono_method_full_name (method, TRUE), mono_method_full_name (m, TRUE), orig_p);
3344 entry = &table [next * entry_size];
3353 add_module_cb (gpointer key, gpointer value, gpointer user_data)
3355 g_ptr_array_add ((GPtrArray*)user_data, value);
3359 * find_extra_method:
3361 * Try finding METHOD in the extra_method table in all AOT images.
3362 * Return its method index, or 0xffffff if not found. Set OUT_AMODULE to the AOT
3363 * module where the method was found.
3366 find_extra_method (MonoMethod *method, MonoAotModule **out_amodule)
3372 /* Try the method's module first */
3373 *out_amodule = method->klass->image->aot_module;
3374 index = find_extra_method_in_amodule (method->klass->image->aot_module, method);
3375 if (index != 0xffffff)
3379 * Try all other modules.
3380 * This is needed because generic instances klass->image points to the image
3381 * containing the generic definition, but the native code is generated to the
3382 * AOT image which contains the reference.
3385 /* Make a copy to avoid doing the search inside the aot lock */
3386 modules = g_ptr_array_new ();
3388 g_hash_table_foreach (aot_modules, add_module_cb, modules);
3392 for (i = 0; i < modules->len; ++i) {
3393 MonoAotModule *amodule = g_ptr_array_index (modules, i);
3395 if (amodule != method->klass->image->aot_module)
3396 index = find_extra_method_in_amodule (amodule, method);
3397 if (index != 0xffffff) {
3398 *out_amodule = amodule;
3403 g_ptr_array_free (modules, TRUE);
3409 * mono_aot_get_method:
3411 * Return a pointer to the AOTed native code for METHOD if it can be found,
3413 * On platforms with function pointers, this doesn't return a function pointer.
3416 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
3418 MonoClass *klass = method->klass;
3419 guint32 method_index;
3420 MonoAotModule *amodule = klass->image->aot_module;
3426 if (amodule->out_of_date)
3429 if ((method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
3430 (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
3431 (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
3432 (method->flags & METHOD_ATTRIBUTE_ABSTRACT))
3436 * Use the original method instead of its invoke-with-check wrapper.
3437 * This is not a problem when using full-aot, since it doesn't support
3440 if (mono_aot_only && method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)
3441 return mono_aot_get_method (domain, mono_marshal_method_from_wrapper (method));
3443 g_assert (klass->inited);
3445 /* Find method index */
3446 if (method->is_inflated && !method->wrapper_type && mono_method_is_generic_sharable_full (method, FALSE, FALSE, FALSE)) {
3448 * For generic methods, we store the fully shared instance in place of the
3451 method = mono_method_get_declaring_generic_method (method);
3452 method_index = mono_metadata_token_index (method->token) - 1;
3453 } else if (method->is_inflated || !method->token) {
3454 /* This hash table is used to avoid the slower search in the extra_method_table in the AOT image */
3456 code = g_hash_table_lookup (amodule->method_to_code, method);
3461 method_index = find_extra_method (method, &amodule);
3463 * Special case the ICollection<T> wrappers for arrays, as they cannot
3464 * be statically enumerated, and each wrapper ends up calling the same
3467 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED && method->klass->rank && strstr (method->name, "System.Collections.Generic")) {
3468 MonoMethod *m = mono_aot_get_array_helper_from_wrapper (method);
3470 code = mono_aot_get_method (domain, m);
3472 if (mono_method_needs_static_rgctx_invoke (m, FALSE)) {
3473 code = mono_create_static_rgctx_trampoline (m, mono_create_ftnptr (domain, code));
3474 /* The call above returns an ftnptr */
3475 code = mono_get_addr_from_ftnptr (code);
3483 * Special case Array.GetGenericValueImpl which is a generic icall.
3484 * Generic sharing currently can't handle it, but the icall returns data using
3485 * an out parameter, so the managed-to-native wrappers can share the same code.
3487 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass == mono_defaults.array_class && !strcmp (method->name, "GetGenericValueImpl")) {
3489 MonoGenericContext ctx;
3490 MonoType *args [16];
3492 if (mono_method_signature (method)->params [1]->type == MONO_TYPE_OBJECT)
3493 /* Avoid recursion */
3496 m = mono_class_get_method_from_name (mono_defaults.array_class, "GetGenericValueImpl", 2);
3499 memset (&ctx, 0, sizeof (ctx));
3500 args [0] = &mono_defaults.object_class->byval_arg;
3501 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
3503 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method (m, &ctx), TRUE, TRUE);
3506 * Get the code for the <object> instantiation which should be emitted into
3507 * the mscorlib aot image by the AOT compiler.
3509 code = mono_aot_get_method (domain, m);
3514 /* Same for CompareExchange<T> and Exchange<T> */
3515 /* Same for Volatile.Read<T>/Write<T> */
3516 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass->image == mono_defaults.corlib &&
3517 ((!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])) ||
3518 (!strcmp (method->klass->name_space, "System.Threading") && !strcmp (method->klass->name, "Volatile") && (!strcmp (method->name, "Read") && MONO_TYPE_IS_REFERENCE (mono_method_signature (method)->ret))) ||
3519 (!strcmp (method->klass->name_space, "System.Threading") && !strcmp (method->klass->name, "Volatile") && (!strcmp (method->name, "Write") && MONO_TYPE_IS_REFERENCE (mono_method_signature (method)->params [1]))))) {
3521 MonoGenericContext ctx;
3522 MonoType *args [16];
3523 gpointer iter = NULL;
3525 while ((m = mono_class_get_methods (method->klass, &iter))) {
3526 if (mono_method_signature (m)->generic_param_count && !strcmp (m->name, method->name))
3531 memset (&ctx, 0, sizeof (ctx));
3532 args [0] = &mono_defaults.object_class->byval_arg;
3533 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
3535 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method (m, &ctx), TRUE, TRUE);
3537 /* Avoid recursion */
3542 * Get the code for the <object> instantiation which should be emitted into
3543 * the mscorlib aot image by the AOT compiler.
3545 code = mono_aot_get_method (domain, m);
3550 if (method_index == 0xffffff && method->is_inflated && mono_method_is_generic_sharable_full (method, FALSE, TRUE, FALSE)) {
3551 /* Partial sharing */
3554 shared = mini_get_shared_method (method);
3555 method_index = find_extra_method (shared, &amodule);
3556 if (method_index != 0xffffff)
3560 if (method_index == 0xffffff && method->is_inflated && mono_method_is_generic_sharable_full (method, FALSE, FALSE, TRUE)) {
3562 /* Use the all-vt shared method since this is what was AOTed */
3563 method_index = find_extra_method (mini_get_shared_method_full (method, TRUE, TRUE), &amodule);
3564 if (method_index != 0xffffff)
3565 method = mini_get_shared_method_full (method, TRUE, FALSE);
3568 if (method_index == 0xffffff) {
3569 if (mono_aot_only && mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
3572 full_name = mono_method_full_name (method, TRUE);
3573 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.\n", full_name);
3579 if (method_index == 0xffffff)
3582 /* Needed by find_jit_info */
3584 if (!amodule->extra_methods)
3585 amodule->extra_methods = g_hash_table_new (NULL, NULL);
3586 g_hash_table_insert (amodule->extra_methods, GUINT_TO_POINTER (method_index), method);
3590 method_index = mono_metadata_token_index (method->token) - 1;
3593 return load_method (domain, amodule, klass->image, method, method->token, method_index);
3597 * Same as mono_aot_get_method, but we try to avoid loading any metadata from the
3601 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
3603 MonoAotModule *aot_module = image->aot_module;
3609 method_index = mono_metadata_token_index (token) - 1;
3611 return load_method (domain, aot_module, image, NULL, token, method_index);
3617 } IsGotEntryUserData;
3620 check_is_got_entry (gpointer key, gpointer value, gpointer user_data)
3622 IsGotEntryUserData *data = (IsGotEntryUserData*)user_data;
3623 MonoAotModule *aot_module = (MonoAotModule*)value;
3625 if (aot_module->got && (data->addr >= (guint8*)(aot_module->got)) && (data->addr < (guint8*)(aot_module->got + aot_module->info.got_size)))
3630 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
3632 IsGotEntryUserData user_data;
3637 user_data.addr = addr;
3638 user_data.res = FALSE;
3640 g_hash_table_foreach (aot_modules, check_is_got_entry, &user_data);
3643 return user_data.res;
3648 MonoAotModule *module;
3649 } FindAotModuleUserData;
3652 find_aot_module_cb (gpointer key, gpointer value, gpointer user_data)
3654 FindAotModuleUserData *data = (FindAotModuleUserData*)user_data;
3655 MonoAotModule *aot_module = (MonoAotModule*)value;
3657 if ((data->addr >= (guint8*)(aot_module->code)) && (data->addr < (guint8*)(aot_module->code_end)))
3658 data->module = aot_module;
3661 static inline MonoAotModule*
3662 find_aot_module (guint8 *code)
3664 FindAotModuleUserData user_data;
3669 /* Reading these need no locking */
3670 if (((gsize)code < aot_code_low_addr) || ((gsize)code > aot_code_high_addr))
3673 user_data.addr = code;
3674 user_data.module = NULL;
3677 g_hash_table_foreach (aot_modules, find_aot_module_cb, &user_data);
3680 return user_data.module;
3684 mono_aot_patch_plt_entry (guint8 *code, gpointer *got, mgreg_t *regs, guint8 *addr)
3687 * Since AOT code is only used in the root domain,
3688 * mono_domain_get () != mono_get_root_domain () means the calling method
3689 * is AppDomain:InvokeInDomain, so this is the same check as in
3690 * mono_method_same_domain () but without loading the metadata for the method.
3692 if (mono_domain_get () == mono_get_root_domain ())
3693 mono_arch_patch_plt_entry (code, got, regs, addr);
3697 * mono_aot_plt_resolve:
3699 * This function is called by the entries in the PLT to resolve the actual method that
3700 * needs to be called. It returns a trampoline to the method and patches the PLT entry.
3701 * Returns NULL if the something cannot be loaded.
3704 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
3706 #ifdef MONO_ARCH_AOT_SUPPORTED
3707 guint8 *p, *target, *plt_entry;
3709 MonoAotModule *module = (MonoAotModule*)aot_module;
3710 gboolean res, no_ftnptr = FALSE;
3712 gboolean using_gsharedvt = FALSE;
3714 //printf ("DYN: %p %d\n", aot_module, plt_info_offset);
3716 p = &module->blob [plt_info_offset];
3718 ji.type = decode_value (p, &p);
3720 mp = mono_mempool_new_size (512);
3721 res = decode_patch (module, mp, &ji, p, &p);
3724 mono_mempool_destroy (mp);
3728 #ifdef MONO_ARCH_GSHAREDVT_SUPPORTED
3729 using_gsharedvt = TRUE;
3733 * Avoid calling resolve_patch_target in the full-aot case if possible, since
3734 * it would create a trampoline, and we don't need that.
3735 * We could do this only if the method does not need the special handling
3736 * in mono_magic_trampoline ().
3738 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) &&
3739 !mono_method_needs_static_rgctx_invoke (ji.data.method, FALSE) && !using_gsharedvt) {
3740 target = mono_jit_compile_method (ji.data.method);
3743 target = mono_resolve_patch_target (NULL, mono_domain_get (), NULL, &ji, TRUE);
3747 * The trampoline expects us to return a function descriptor on platforms which use
3748 * it, but resolve_patch_target returns a direct function pointer for some type of
3749 * patches, so have to translate between the two.
3750 * FIXME: Clean this up, but how ?
3752 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) {
3753 /* These should already have a function descriptor */
3754 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3755 /* Our function descriptors have a 0 environment, gcc created ones don't */
3756 if (ji.type != MONO_PATCH_INFO_INTERNAL_METHOD && ji.type != MONO_PATCH_INFO_JIT_ICALL_ADDR && ji.type != MONO_PATCH_INFO_ICALL_ADDR)
3757 g_assert (((gpointer*)target) [2] == 0);
3760 } else if (!no_ftnptr) {
3761 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3762 g_assert (((gpointer*)target) [2] != 0);
3764 target = mono_create_ftnptr (mono_domain_get (), target);
3767 mono_mempool_destroy (mp);
3769 /* Patch the PLT entry with target which might be the actual method not a trampoline */
3770 plt_entry = mono_aot_get_plt_entry (code);
3771 g_assert (plt_entry);
3772 mono_aot_patch_plt_entry (plt_entry, module->got, NULL, target);
3776 g_assert_not_reached ();
3784 * Initialize the PLT table of the AOT module. Called lazily when the first AOT
3785 * method in the module is loaded to avoid committing memory by writing to it.
3786 * LOCKING: Assumes the AOT lock is held.
3789 init_plt (MonoAotModule *amodule)
3794 if (amodule->plt_inited)
3797 tramp = mono_create_specific_trampoline (amodule, MONO_TRAMPOLINE_AOT_PLT, mono_get_root_domain (), NULL);
3800 * Initialize the PLT entries in the GOT to point to the default targets.
3803 tramp = mono_create_ftnptr (mono_domain_get (), tramp);
3804 for (i = 1; i < amodule->info.plt_size; ++i)
3805 /* All the default entries point to the AOT trampoline */
3806 ((gpointer*)amodule->got)[amodule->info.plt_got_offset_base + i] = tramp;
3808 amodule->plt_inited = TRUE;
3812 * mono_aot_get_plt_entry:
3814 * Return the address of the PLT entry called by the code at CODE if exists.
3817 mono_aot_get_plt_entry (guint8 *code)
3819 MonoAotModule *amodule = find_aot_module (code);
3820 guint8 *target = NULL;
3826 if (amodule->thumb_end && code < amodule->thumb_end) {
3827 return mono_arm_get_thumb_plt_entry (code);
3831 #ifdef MONO_ARCH_AOT_SUPPORTED
3832 target = mono_arch_get_call_target (code);
3834 g_assert_not_reached ();
3838 while (target != NULL) {
3839 if ((target >= (guint8*)(amodule->plt)) && (target < (guint8*)(amodule->plt_end)))
3842 // Add 4 since mono_arch_get_call_target assumes we're passing
3843 // the instruction after the actual branch instruction.
3844 target = mono_arch_get_call_target (target + 4);
3849 if ((target >= (guint8*)(amodule->plt)) && (target < (guint8*)(amodule->plt_end)))
3857 * mono_aot_get_plt_info_offset:
3859 * Return the PLT info offset belonging to the plt entry called by CODE.
3862 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
3864 guint8 *plt_entry = mono_aot_get_plt_entry (code);
3866 g_assert (plt_entry);
3868 /* The offset is embedded inside the code after the plt entry */
3869 #ifdef MONO_ARCH_AOT_SUPPORTED
3870 return mono_arch_get_plt_info_offset (plt_entry, regs, code);
3872 g_assert_not_reached ();
3878 mono_create_ftnptr_malloc (guint8 *code)
3880 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3881 MonoPPCFunctionDescriptor *ftnptr = g_malloc0 (sizeof (MonoPPCFunctionDescriptor));
3883 ftnptr->code = code;
3894 * mono_aot_register_jit_icall:
3896 * Register a JIT icall which is called by trampolines in full-aot mode. This should
3897 * be called from mono_arch_init () during startup.
3900 mono_aot_register_jit_icall (const char *name, gpointer addr)
3902 /* No need for locking */
3903 if (!aot_jit_icall_hash)
3904 aot_jit_icall_hash = g_hash_table_new (g_str_hash, g_str_equal);
3905 g_hash_table_insert (aot_jit_icall_hash, (char*)name, addr);
3909 * load_function_full:
3911 * Load the function named NAME from the aot image.
3914 load_function_full (MonoAotModule *amodule, const char *name, MonoTrampInfo **out_tinfo)
3918 int n_patches, pindex;
3921 guint32 info_offset;
3925 symbol = g_strdup_printf ("%s", name);
3926 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&code);
3929 g_error ("Symbol '%s' not found in AOT file '%s'.\n", name, amodule->aot_name);
3931 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT FOUND function '%s' in AOT file '%s'.", name, amodule->aot_name);
3935 symbol = g_strdup_printf ("%s_p", name);
3936 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&p);
3939 /* Nothing to patch */
3942 info_offset = *(guint32*)p;
3944 MonoTrampInfo *tinfo;
3945 guint32 code_size, uw_info_len, uw_offset;
3947 /* Construct a MonoTrampInfo from the data in the AOT image */
3949 p += sizeof (guint32);
3950 code_size = *(guint32*)p;
3951 p += sizeof (guint32);
3952 uw_offset = *(guint32*)p;
3953 uw_info = amodule->unwind_info + uw_offset;
3954 uw_info_len = decode_value (uw_info, &uw_info);
3956 tinfo = g_new0 (MonoTrampInfo, 1);
3958 tinfo->code_size = code_size;
3959 tinfo->uw_info = uw_info;
3960 tinfo->uw_info_len = uw_info_len;
3965 p = amodule->blob + info_offset;
3967 /* Similar to mono_aot_load_method () */
3969 n_patches = decode_value (p, &p);
3972 MonoJumpInfo *patches;
3975 mp = mono_mempool_new ();
3977 patches = load_patch_info (amodule, mp, n_patches, &got_slots, p, &p);
3980 for (pindex = 0; pindex < n_patches; ++pindex) {
3981 MonoJumpInfo *ji = &patches [pindex];
3984 if (amodule->got [got_slots [pindex]])
3988 * When this code is executed, the runtime may not be initalized yet, so
3989 * resolve the patch info by hand.
3991 if (ji->type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
3992 if (!strcmp (ji->data.name, "mono_get_lmf_addr")) {
3993 target = mono_get_lmf_addr;
3994 } else if (!strcmp (ji->data.name, "mono_thread_force_interruption_checkpoint")) {
3995 target = mono_thread_force_interruption_checkpoint;
3996 } else if (!strcmp (ji->data.name, "mono_exception_from_token")) {
3997 target = mono_exception_from_token;
3998 } else if (!strcmp (ji->data.name, "mono_throw_exception")) {
3999 target = mono_get_throw_exception ();
4000 } else if (strstr (ji->data.name, "trampoline_func_") == ji->data.name) {
4001 int tramp_type2 = atoi (ji->data.name + strlen ("trampoline_func_"));
4002 target = (gpointer)mono_get_trampoline_func (tramp_type2);
4003 } else if (strstr (ji->data.name, "specific_trampoline_lazy_fetch_") == ji->data.name) {
4004 /* atoll is needed because the the offset is unsigned */
4008 res = sscanf (ji->data.name, "specific_trampoline_lazy_fetch_%u", &slot);
4009 g_assert (res == 1);
4010 target = mono_create_specific_trampoline (GUINT_TO_POINTER (slot), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, mono_get_root_domain (), NULL);
4011 target = mono_create_ftnptr_malloc (target);
4012 } else if (!strcmp (ji->data.name, "specific_trampoline_monitor_enter")) {
4013 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_MONITOR_ENTER, mono_get_root_domain (), NULL);
4014 target = mono_create_ftnptr_malloc (target);
4015 } else if (!strcmp (ji->data.name, "specific_trampoline_monitor_exit")) {
4016 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_MONITOR_EXIT, mono_get_root_domain (), NULL);
4017 target = mono_create_ftnptr_malloc (target);
4018 } else if (!strcmp (ji->data.name, "specific_trampoline_generic_class_init")) {
4019 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_GENERIC_CLASS_INIT, mono_get_root_domain (), NULL);
4020 target = mono_create_ftnptr_malloc (target);
4021 } else if (!strcmp (ji->data.name, "mono_thread_get_and_clear_pending_exception")) {
4022 target = mono_thread_get_and_clear_pending_exception;
4023 } else if (strstr (ji->data.name, "generic_trampoline_")) {
4024 target = mono_aot_get_trampoline (ji->data.name);
4025 } else if (aot_jit_icall_hash && g_hash_table_lookup (aot_jit_icall_hash, ji->data.name)) {
4026 /* Registered by mono_arch_init () */
4027 target = g_hash_table_lookup (aot_jit_icall_hash, ji->data.name);
4029 fprintf (stderr, "Unknown relocation '%s'\n", ji->data.name);
4030 g_assert_not_reached ();
4034 /* Hopefully the code doesn't have patches which need method or
4037 target = mono_resolve_patch_target (NULL, NULL, code, ji, FALSE);
4041 amodule->got [got_slots [pindex]] = target;
4046 mono_mempool_destroy (mp);
4053 load_function (MonoAotModule *amodule, const char *name)
4055 return load_function_full (amodule, name, NULL);
4059 * Return the trampoline identified by NAME from the mscorlib AOT file.
4060 * On ppc64, this returns a function descriptor.
4063 mono_aot_get_trampoline_full (const char *name, MonoTrampInfo **out_tinfo)
4066 MonoAotModule *amodule;
4068 image = mono_defaults.corlib;
4071 amodule = image->aot_module;
4074 return mono_create_ftnptr_malloc (load_function_full (amodule, name, out_tinfo));
4078 mono_aot_get_trampoline (const char *name)
4080 return mono_aot_get_trampoline_full (name, NULL);
4084 #include <mach/mach.h>
4086 static TrampolinePage* trampoline_pages [MONO_AOT_TRAMP_NUM];
4087 /* these sizes are for ARM code, parametrize if porting to other architectures (see arch_emit_specific_trampoline_pages)
4088 * trampoline size is assumed to be 8 bytes below as well (8 is the minimum for 32 bit archs, since we need to store
4089 * two pointers for trampoline in the data page).
4090 * the minimum for the common code must be at least sizeof(TrampolinePage), since we store the page info at the
4091 * beginning of the data page.
4093 static const int trampolines_pages_code_offsets [MONO_AOT_TRAMP_NUM] = {16, 16, 72, 16};
4095 static unsigned char*
4096 get_new_trampoline_from_page (int tramp_type)
4098 MonoAotModule *amodule;
4100 TrampolinePage *page;
4103 vm_address_t addr, taddr;
4105 vm_prot_t prot, max_prot;
4107 unsigned char *code;
4109 mono_aot_page_lock ();
4110 page = trampoline_pages [tramp_type];
4111 if (page && page->trampolines < page->trampolines_end) {
4112 code = page->trampolines;
4113 page->trampolines += 8;
4114 mono_aot_page_unlock ();
4117 mono_aot_page_unlock ();
4118 psize = mono_pagesize ();
4119 /* the trampoline template page is in the mscorlib module */
4120 image = mono_defaults.corlib;
4123 amodule = image->aot_module;
4126 if (tramp_type == MONO_AOT_TRAMP_SPECIFIC)
4127 tpage = load_function (amodule, "specific_trampolines_page");
4128 else if (tramp_type == MONO_AOT_TRAMP_STATIC_RGCTX)
4129 tpage = load_function (amodule, "rgctx_trampolines_page");
4130 else if (tramp_type == MONO_AOT_TRAMP_IMT_THUNK)
4131 tpage = load_function (amodule, "imt_trampolines_page");
4132 else if (tramp_type == MONO_AOT_TRAMP_GSHAREDVT_ARG)
4133 tpage = load_function (amodule, "gsharedvt_arg_trampolines_page");
4135 g_error ("Incorrect tramp type for trampolines page");
4137 /*g_warning ("loaded trampolines page at %x", tpage);*/
4139 /* avoid the unlikely case of looping forever */
4142 while (page == NULL && count-- > 0) {
4144 /* allocate two contiguous pages of memory: the first page will contain the data (like a local constant pool)
4145 * while the second will contain the trampolines.
4147 ret = vm_allocate (mach_task_self (), &addr, psize * 2, VM_FLAGS_ANYWHERE);
4148 if (ret != KERN_SUCCESS) {
4149 g_error ("Cannot allocate memory for trampolines: %d", ret);
4152 /*g_warning ("allocated trampoline double page at %x", addr);*/
4153 /* replace the second page with a remapped trampoline page */
4154 taddr = addr + psize;
4155 vm_deallocate (mach_task_self (), taddr, psize);
4156 ret = vm_remap (mach_task_self (), &taddr, psize, 0, FALSE, mach_task_self(), (vm_address_t)tpage, FALSE, &prot, &max_prot, VM_INHERIT_SHARE);
4157 if (ret != KERN_SUCCESS) {
4158 /* someone else got the page, try again */
4159 vm_deallocate (mach_task_self (), addr, psize);
4162 /*g_warning ("remapped trampoline page at %x", taddr);*/
4164 mono_aot_page_lock ();
4165 page = trampoline_pages [tramp_type];
4166 /* some other thread already allocated, so use that to avoid wasting memory */
4167 if (page && page->trampolines < page->trampolines_end) {
4168 code = page->trampolines;
4169 page->trampolines += 8;
4170 mono_aot_page_unlock ();
4171 vm_deallocate (mach_task_self (), addr, psize);
4172 vm_deallocate (mach_task_self (), taddr, psize);
4175 page = (TrampolinePage*)addr;
4176 page->next = trampoline_pages [tramp_type];
4177 trampoline_pages [tramp_type] = page;
4178 page->trampolines = (void*)(taddr + trampolines_pages_code_offsets [tramp_type]);
4179 page->trampolines_end = (void*)(taddr + psize);
4180 code = page->trampolines;
4181 page->trampolines += 8;
4182 mono_aot_page_unlock ();
4185 g_error ("Cannot allocate more trampoline pages: %d", ret);
4190 static unsigned char*
4191 get_new_trampoline_from_page (int tramp_type)
4193 g_error ("Page trampolines not supported.");
4200 get_new_specific_trampoline_from_page (gpointer tramp, gpointer arg)
4205 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_SPECIFIC);
4207 data = (gpointer*)((char*)code - mono_pagesize ());
4210 /*g_warning ("new trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
4216 get_new_rgctx_trampoline_from_page (gpointer tramp, gpointer arg)
4221 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_STATIC_RGCTX);
4223 data = (gpointer*)((char*)code - mono_pagesize ());
4226 /*g_warning ("new rgctx trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
4232 get_new_imt_trampoline_from_page (gpointer arg)
4237 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_IMT_THUNK);
4239 data = (gpointer*)((char*)code - mono_pagesize ());
4241 /*g_warning ("new imt trampoline at %p for data %p, (stored at %p)", code, arg, data);*/
4247 get_new_gsharedvt_arg_trampoline_from_page (gpointer tramp, gpointer arg)
4252 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_GSHAREDVT_ARG);
4254 data = (gpointer*)((char*)code - mono_pagesize ());
4257 /*g_warning ("new rgctx trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
4261 /* Return a given kind of trampoline */
4263 get_numerous_trampoline (MonoAotTrampoline tramp_type, int n_got_slots, MonoAotModule **out_amodule, guint32 *got_offset, guint32 *out_tramp_size)
4265 MonoAotModule *amodule;
4266 int index, tramp_size;
4269 /* Currently, we keep all trampolines in the mscorlib AOT image */
4270 image = mono_defaults.corlib;
4275 amodule = image->aot_module;
4278 *out_amodule = amodule;
4281 #define MONOTOUCH_TRAMPOLINES_ERROR ". See http://docs.xamarin.com/ios/troubleshooting for instruction on how to fix this condition"
4283 #define MONOTOUCH_TRAMPOLINES_ERROR ""
4285 if (amodule->trampoline_index [tramp_type] == amodule->info.num_trampolines [tramp_type]) {
4286 g_error ("Ran out of trampolines of type %d in '%s' (%d)%s\n",
4287 tramp_type, image->name, amodule->info.num_trampolines [tramp_type], MONOTOUCH_TRAMPOLINES_ERROR);
4289 index = amodule->trampoline_index [tramp_type] ++;
4293 *got_offset = amodule->info.trampoline_got_offset_base [tramp_type] + (index * n_got_slots);
4295 tramp_size = amodule->info.trampoline_size [tramp_type];
4298 *out_tramp_size = tramp_size;
4300 return amodule->trampolines [tramp_type] + (index * tramp_size);
4304 * Return a specific trampoline from the AOT file.
4307 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
4309 MonoAotModule *amodule;
4310 guint32 got_offset, tramp_size;
4311 guint8 *code, *tramp;
4312 static gpointer generic_trampolines [MONO_TRAMPOLINE_NUM];
4313 static gboolean inited;
4314 static guint32 num_trampolines;
4320 mono_counters_register ("Specific trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &num_trampolines);
4329 if (!generic_trampolines [tramp_type]) {
4332 symbol = mono_get_generic_trampoline_name (tramp_type);
4333 generic_trampolines [tramp_type] = mono_aot_get_trampoline (symbol);
4337 tramp = generic_trampolines [tramp_type];
4340 if (USE_PAGE_TRAMPOLINES) {
4341 code = get_new_specific_trampoline_from_page (tramp, arg1);
4344 code = get_numerous_trampoline (MONO_AOT_TRAMP_SPECIFIC, 2, &amodule, &got_offset, &tramp_size);
4346 amodule->got [got_offset] = tramp;
4347 amodule->got [got_offset + 1] = arg1;
4351 *code_len = tramp_size;
4357 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
4359 MonoAotModule *amodule;
4363 if (USE_PAGE_TRAMPOLINES) {
4364 code = get_new_rgctx_trampoline_from_page (addr, ctx);
4366 code = get_numerous_trampoline (MONO_AOT_TRAMP_STATIC_RGCTX, 2, &amodule, &got_offset, NULL);
4368 amodule->got [got_offset] = ctx;
4369 amodule->got [got_offset + 1] = addr;
4372 /* The caller expects an ftnptr */
4373 return mono_create_ftnptr (mono_domain_get (), code);
4377 mono_aot_get_unbox_trampoline (MonoMethod *method)
4379 guint32 method_index = mono_metadata_token_index (method->token) - 1;
4380 MonoAotModule *amodule;
4382 guint32 *ut, *ut_end, *entry;
4383 int low, high, entry_index;
4385 if (method->is_inflated && !mono_method_is_generic_sharable_full (method, FALSE, FALSE, FALSE)) {
4386 method_index = find_extra_method (method, &amodule);
4387 if (method_index == 0xffffff && mono_method_is_generic_sharable_full (method, FALSE, FALSE, TRUE)) {
4388 MonoMethod *shared = mini_get_shared_method_full (method, TRUE, TRUE);
4389 method_index = find_extra_method (shared, &amodule);
4391 g_assert (method_index != 0xffffff);
4393 amodule = method->klass->image->aot_module;
4397 ut = amodule->unbox_trampolines;
4398 ut_end = amodule->unbox_trampolines_end;
4400 /* Do a binary search in the sorted table */
4403 high = (ut_end - ut) / 2;
4404 while (low < high) {
4405 entry_index = (low + high) / 2;
4406 entry = &ut [(entry_index * 2)];
4407 if (entry [0] < method_index) {
4408 low = entry_index + 1;
4409 } else if (entry [0] > method_index) {
4412 if (amodule->info.flags & MONO_AOT_FILE_FLAG_DIRECT_METHOD_ADDRESSES)
4413 code = get_arm_bl_target (entry + 1);
4415 code = amodule->code + entry [1];
4421 /* The caller expects an ftnptr */
4422 return mono_create_ftnptr (mono_domain_get (), code);
4426 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
4430 MonoAotModule *amodule = mono_defaults.corlib->aot_module;
4431 guint32 index = MONO_RGCTX_SLOT_INDEX (slot);
4432 static int count = 0;
4435 if (index >= amodule->info.num_rgctx_fetch_trampolines) {
4436 static gpointer addr;
4440 * Use the general version of the rgctx fetch trampoline. It receives a pair of <slot, trampoline> in the rgctx arg reg.
4443 addr = load_function (amodule, "rgctx_fetch_trampoline_general");
4444 info = mono_domain_alloc0 (mono_get_root_domain (), sizeof (gpointer) * 2);
4445 info [0] = GUINT_TO_POINTER (slot);
4446 info [1] = mono_create_specific_trampoline (GUINT_TO_POINTER (slot), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, mono_get_root_domain (), NULL);
4447 code = mono_aot_get_static_rgctx_trampoline (info, addr);
4448 return mono_create_ftnptr (mono_domain_get (), code);
4451 symbol = mono_get_rgctx_fetch_trampoline_name (slot);
4452 code = load_function (mono_defaults.corlib->aot_module, symbol);
4454 /* The caller expects an ftnptr */
4455 return mono_create_ftnptr (mono_domain_get (), code);
4459 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
4464 int i, index, real_count;
4465 MonoAotModule *amodule;
4468 for (i = 0; i < count; ++i) {
4469 MonoIMTCheckItem *item = imt_entries [i];
4471 if (item->is_equals)
4475 /* Save the entries into an array */
4476 buf = mono_domain_alloc (domain, (real_count + 1) * 2 * sizeof (gpointer));
4478 for (i = 0; i < count; ++i) {
4479 MonoIMTCheckItem *item = imt_entries [i];
4481 if (!item->is_equals)
4484 g_assert (item->key);
4486 buf [(index * 2)] = item->key;
4487 if (item->has_target_code) {
4488 gpointer *p = mono_domain_alloc (domain, sizeof (gpointer));
4489 *p = item->value.target_code;
4490 buf [(index * 2) + 1] = p;
4492 buf [(index * 2) + 1] = &(vtable->vtable [item->value.vtable_slot]);
4496 buf [(index * 2)] = NULL;
4497 buf [(index * 2) + 1] = fail_tramp;
4499 if (USE_PAGE_TRAMPOLINES) {
4500 code = get_new_imt_trampoline_from_page (buf);
4502 code = get_numerous_trampoline (MONO_AOT_TRAMP_IMT_THUNK, 1, &amodule, &got_offset, NULL);
4504 amodule->got [got_offset] = buf;
4511 mono_aot_get_gsharedvt_arg_trampoline (gpointer arg, gpointer addr)
4513 MonoAotModule *amodule;
4517 if (USE_PAGE_TRAMPOLINES) {
4518 code = get_new_gsharedvt_arg_trampoline_from_page (addr, arg);
4520 code = get_numerous_trampoline (MONO_AOT_TRAMP_GSHAREDVT_ARG, 2, &amodule, &got_offset, NULL);
4522 amodule->got [got_offset] = arg;
4523 amodule->got [got_offset + 1] = addr;
4526 /* The caller expects an ftnptr */
4527 return mono_create_ftnptr (mono_domain_get (), code);
4531 * mono_aot_set_make_unreadable:
4533 * Set whenever to make all mmaped memory unreadable. In conjuction with a
4534 * SIGSEGV handler, this is useful to find out which pages the runtime tries to read.
4537 mono_aot_set_make_unreadable (gboolean unreadable)
4541 make_unreadable = unreadable;
4543 if (make_unreadable && !inited) {
4544 mono_counters_register ("AOT pagefaults", MONO_COUNTER_JIT | MONO_COUNTER_INT, &n_pagefaults);
4549 MonoAotModule *module;
4554 find_map (gpointer key, gpointer value, gpointer user_data)
4556 MonoAotModule *module = (MonoAotModule*)value;
4557 FindMapUserData *data = (FindMapUserData*)user_data;
4560 if ((data->ptr >= module->mem_begin) && (data->ptr < module->mem_end))
4561 data->module = module;
4564 static MonoAotModule*
4565 find_module_for_addr (void *ptr)
4567 FindMapUserData data;
4569 if (!make_unreadable)
4573 data.ptr = (guint8*)ptr;
4576 g_hash_table_foreach (aot_modules, (GHFunc)find_map, &data);
4583 * mono_aot_is_pagefault:
4585 * Should be called from a SIGSEGV signal handler to find out whenever @ptr is
4586 * within memory allocated by this module.
4589 mono_aot_is_pagefault (void *ptr)
4591 if (!make_unreadable)
4595 * Not signal safe, but SIGSEGV's are synchronous, and
4596 * this is only turned on by a MONO_DEBUG option.
4598 return find_module_for_addr (ptr) != NULL;
4602 * mono_aot_handle_pagefault:
4604 * Handle a pagefault caused by an unreadable page by making it readable again.
4607 mono_aot_handle_pagefault (void *ptr)
4609 #ifndef PLATFORM_WIN32
4610 guint8* start = (guint8*)ROUND_DOWN (((gssize)ptr), mono_pagesize ());
4614 res = mono_mprotect (start, mono_pagesize (), MONO_MMAP_READ|MONO_MMAP_WRITE|MONO_MMAP_EXEC);
4615 g_assert (res == 0);
4626 mono_aot_init (void)
4631 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
4637 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
4643 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
4649 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
4655 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
4661 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
4667 mono_aot_get_plt_entry (guint8 *code)
4673 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
4679 mono_aot_patch_plt_entry (guint8 *code, gpointer *got, mgreg_t *regs, guint8 *addr)
4684 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
4690 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
4692 g_assert_not_reached ();
4698 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
4700 g_assert_not_reached ();
4705 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
4707 g_assert_not_reached ();
4712 mono_aot_get_trampoline (const char *name)
4714 g_assert_not_reached ();
4719 mono_aot_get_unbox_trampoline (MonoMethod *method)
4721 g_assert_not_reached ();
4726 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
4728 g_assert_not_reached ();
4733 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
4735 g_assert_not_reached ();
4740 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
4742 g_assert_not_reached ();
4747 mono_aot_register_jit_icall (const char *name, gpointer addr)