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 g_assert_not_reached ();
656 // FIXME: Error handling, memory management
658 static MonoMethodSignature*
659 decode_signature_with_target (MonoAotModule *module, MonoMethodSignature *target, guint8 *buf, guint8 **endbuf)
661 MonoMethodSignature *sig;
663 int i, param_count, call_conv;
665 gboolean hasthis, explicit_this, has_gen_params;
669 has_gen_params = (flags & 0x10) != 0;
670 hasthis = (flags & 0x20) != 0;
671 explicit_this = (flags & 0x40) != 0;
672 call_conv = flags & 0x0F;
674 g_assert (!has_gen_params);
676 param_count = decode_value (p, &p);
677 if (target && param_count != target->param_count)
679 sig = g_malloc0 (MONO_SIZEOF_METHOD_SIGNATURE + param_count * sizeof (MonoType *));
680 sig->param_count = param_count;
681 sig->sentinelpos = -1;
682 sig->hasthis = hasthis;
683 sig->explicit_this = explicit_this;
684 sig->call_convention = call_conv;
685 sig->param_count = param_count;
686 sig->ret = decode_type (module, p, &p);
687 for (i = 0; i < param_count; ++i) {
688 if (*p == MONO_TYPE_SENTINEL) {
689 g_assert (sig->call_convention == MONO_CALL_VARARG);
690 sig->sentinelpos = i;
693 sig->params [i] = decode_type (module, p, &p);
696 if (sig->call_convention == MONO_CALL_VARARG && sig->sentinelpos == -1)
697 sig->sentinelpos = sig->param_count;
704 static MonoMethodSignature*
705 decode_signature (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
707 return decode_signature_with_target (module, NULL, buf, endbuf);
711 sig_matches_target (MonoAotModule *module, MonoMethod *target, guint8 *buf, guint8 **endbuf)
713 MonoMethodSignature *sig;
717 sig = decode_signature_with_target (module, mono_method_signature (target), p, &p);
718 res = sig && mono_metadata_signature_equal (mono_method_signature (target), sig);
724 /* Stores information returned by decode_method_ref () */
729 gboolean no_aot_trampoline;
733 * decode_method_ref_with_target:
735 * Decode a method reference, storing the image/token into a MethodRef structure.
736 * This avoids loading metadata for the method if the caller does not need it. If the method has
737 * no token, then it is loaded from metadata and ref->method is set to the method instance.
738 * If TARGET is non-NULL, abort decoding if it can be determined that the decoded method
739 * couldn't resolve to TARGET, and return FALSE.
740 * There are some kinds of method references which only support a non-null TARGET.
741 * This means that its not possible to decode this into a method, only to check
742 * that the method reference matches a given method. This is normally not a problem
743 * as these wrappers only occur in the extra_methods table, where we already have
744 * a method we want to lookup.
747 decode_method_ref_with_target (MonoAotModule *module, MethodRef *ref, MonoMethod *target, guint8 *buf, guint8 **endbuf)
749 guint32 image_index, value;
750 MonoImage *image = NULL;
753 memset (ref, 0, sizeof (MethodRef));
755 value = decode_value (p, &p);
756 image_index = value >> 24;
758 if (image_index == MONO_AOT_METHODREF_NO_AOT_TRAMPOLINE) {
759 ref->no_aot_trampoline = TRUE;
760 value = decode_value (p, &p);
761 image_index = value >> 24;
764 if (image_index < MONO_AOT_METHODREF_MIN || image_index == MONO_AOT_METHODREF_METHODSPEC || image_index == MONO_AOT_METHODREF_GINST) {
765 if (target && target->wrapper_type)
769 if (image_index == MONO_AOT_METHODREF_WRAPPER) {
770 guint32 wrapper_type;
772 wrapper_type = decode_value (p, &p);
774 if (target && target->wrapper_type != wrapper_type)
778 image = mono_defaults.corlib;
780 switch (wrapper_type) {
781 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK: {
782 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
786 mono_class_init (m->klass);
787 ref->method = mono_marshal_get_remoting_invoke_with_check (m);
790 case MONO_WRAPPER_PROXY_ISINST: {
791 MonoClass *klass = decode_klass_ref (module, p, &p);
794 ref->method = mono_marshal_get_proxy_cancast (klass);
797 case MONO_WRAPPER_LDFLD:
798 case MONO_WRAPPER_LDFLDA:
799 case MONO_WRAPPER_STFLD:
800 case MONO_WRAPPER_ISINST: {
801 MonoClass *klass = decode_klass_ref (module, p, &p);
804 if (wrapper_type == MONO_WRAPPER_LDFLD)
805 ref->method = mono_marshal_get_ldfld_wrapper (&klass->byval_arg);
806 else if (wrapper_type == MONO_WRAPPER_LDFLDA)
807 ref->method = mono_marshal_get_ldflda_wrapper (&klass->byval_arg);
808 else if (wrapper_type == MONO_WRAPPER_STFLD)
809 ref->method = mono_marshal_get_stfld_wrapper (&klass->byval_arg);
810 else if (wrapper_type == MONO_WRAPPER_ISINST)
811 ref->method = mono_marshal_get_isinst (klass);
813 g_assert_not_reached ();
816 case MONO_WRAPPER_LDFLD_REMOTE:
817 ref->method = mono_marshal_get_ldfld_remote_wrapper (NULL);
819 case MONO_WRAPPER_STFLD_REMOTE:
820 ref->method = mono_marshal_get_stfld_remote_wrapper (NULL);
822 case MONO_WRAPPER_ALLOC: {
823 int atype = decode_value (p, &p);
825 ref->method = mono_gc_get_managed_allocator_by_type (atype);
826 g_assert (ref->method);
829 case MONO_WRAPPER_WRITE_BARRIER:
830 ref->method = mono_gc_get_write_barrier ();
832 case MONO_WRAPPER_STELEMREF: {
833 int subtype = decode_value (p, &p);
835 if (subtype == WRAPPER_SUBTYPE_NONE) {
836 ref->method = mono_marshal_get_stelemref ();
837 } else if (subtype == WRAPPER_SUBTYPE_VIRTUAL_STELEMREF) {
841 kind = decode_value (p, &p);
843 /* Can't decode this */
846 if (target->wrapper_type == MONO_WRAPPER_STELEMREF) {
847 info = mono_marshal_get_wrapper_info (target);
850 if (info->subtype == subtype && info->d.virtual_stelemref.kind == kind)
851 ref->method = target;
858 g_assert_not_reached ();
862 case MONO_WRAPPER_SYNCHRONIZED: {
863 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
867 ref->method = mono_marshal_get_synchronized_wrapper (m);
870 case MONO_WRAPPER_UNKNOWN: {
871 MonoMethodDesc *desc;
872 MonoMethod *orig_method;
873 int subtype = decode_value (p, &p);
875 if (subtype == WRAPPER_SUBTYPE_PTR_TO_STRUCTURE || subtype == WRAPPER_SUBTYPE_STRUCTURE_TO_PTR) {
876 MonoClass *klass = decode_klass_ref (module, p, &p);
883 if (klass != target->klass)
886 if (subtype == WRAPPER_SUBTYPE_PTR_TO_STRUCTURE) {
887 if (strcmp (target->name, "PtrToStructure"))
889 ref->method = mono_marshal_get_ptr_to_struct (klass);
891 if (strcmp (target->name, "StructureToPtr"))
893 ref->method = mono_marshal_get_struct_to_ptr (klass);
895 } else if (subtype == WRAPPER_SUBTYPE_SYNCHRONIZED_INNER) {
896 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
900 ref->method = mono_marshal_get_synchronized_inner_wrapper (m);
901 } else if (subtype == WRAPPER_SUBTYPE_GSHAREDVT_IN) {
902 ref->method = mono_marshal_get_gsharedvt_in_wrapper ();
903 } else if (subtype == WRAPPER_SUBTYPE_GSHAREDVT_OUT) {
904 ref->method = mono_marshal_get_gsharedvt_out_wrapper ();
906 if (subtype == WRAPPER_SUBTYPE_FAST_MONITOR_ENTER)
907 desc = mono_method_desc_new ("Monitor:Enter", FALSE);
908 else if (subtype == WRAPPER_SUBTYPE_FAST_MONITOR_EXIT)
909 desc = mono_method_desc_new ("Monitor:Exit", FALSE);
910 else if (subtype == WRAPPER_SUBTYPE_FAST_MONITOR_ENTER_V4)
911 desc = mono_method_desc_new ("Monitor:Enter(object,bool&)", FALSE);
913 g_assert_not_reached ();
914 orig_method = mono_method_desc_search_in_class (desc, mono_defaults.monitor_class);
915 g_assert (orig_method);
916 mono_method_desc_free (desc);
917 ref->method = mono_monitor_get_fast_path (orig_method);
921 case MONO_WRAPPER_MANAGED_TO_MANAGED: {
922 int subtype = decode_value (p, &p);
924 if (subtype == WRAPPER_SUBTYPE_ELEMENT_ADDR) {
925 int rank = decode_value (p, &p);
926 int elem_size = decode_value (p, &p);
928 ref->method = mono_marshal_get_array_address (rank, elem_size);
929 } else if (subtype == WRAPPER_SUBTYPE_STRING_CTOR) {
933 m = decode_resolve_method_ref (module, p, &p);
939 g_assert (target->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED);
941 info = mono_marshal_get_wrapper_info (target);
942 if (info && info->subtype == subtype && info->d.string_ctor.method == m)
943 ref->method = target;
949 case MONO_WRAPPER_MANAGED_TO_NATIVE: {
951 int subtype = decode_value (p, &p);
954 if (subtype == WRAPPER_SUBTYPE_ICALL_WRAPPER) {
959 if (strcmp (target->name, name) != 0)
961 ref->method = target;
963 m = decode_resolve_method_ref (module, p, &p);
968 /* This should only happen when looking for an extra method */
971 if (mono_marshal_method_from_wrapper (target) == m)
972 ref->method = target;
978 case MONO_WRAPPER_CASTCLASS: {
979 int subtype = decode_value (p, &p);
981 if (subtype == WRAPPER_SUBTYPE_CASTCLASS_WITH_CACHE)
982 ref->method = mono_marshal_get_castclass_with_cache ();
983 else if (subtype == WRAPPER_SUBTYPE_ISINST_WITH_CACHE)
984 ref->method = mono_marshal_get_isinst_with_cache ();
986 g_assert_not_reached ();
989 case MONO_WRAPPER_RUNTIME_INVOKE: {
990 int subtype = decode_value (p, &p);
995 if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_DYNAMIC) {
996 if (strcmp (target->name, "runtime_invoke_dynamic") != 0)
998 ref->method = target;
999 } else if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_DIRECT) {
1000 /* Direct wrapper */
1001 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
1005 ref->method = mono_marshal_get_runtime_invoke (m, FALSE);
1006 } else if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_VIRTUAL) {
1007 /* Virtual direct wrapper */
1008 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
1012 ref->method = mono_marshal_get_runtime_invoke (m, TRUE);
1014 if (sig_matches_target (module, target, p, &p))
1015 ref->method = target;
1021 case MONO_WRAPPER_DELEGATE_INVOKE:
1022 case MONO_WRAPPER_DELEGATE_BEGIN_INVOKE:
1023 case MONO_WRAPPER_DELEGATE_END_INVOKE: {
1025 * These wrappers are associated with a signature, not with a method.
1026 * Since we can't decode them into methods, they need a target method.
1031 if (sig_matches_target (module, target, p, &p))
1032 ref->method = target;
1037 case MONO_WRAPPER_NATIVE_TO_MANAGED: {
1041 m = decode_resolve_method_ref (module, p, &p);
1044 klass = decode_klass_ref (module, p, &p);
1047 ref->method = mono_marshal_get_managed_wrapper (m, klass, 0);
1051 g_assert_not_reached ();
1053 } else if (image_index == MONO_AOT_METHODREF_METHODSPEC) {
1054 image_index = decode_value (p, &p);
1055 ref->token = decode_value (p, &p);
1057 image = load_image (module, image_index, TRUE);
1060 } else if (image_index == MONO_AOT_METHODREF_GINST) {
1062 MonoGenericContext ctx;
1065 * These methods do not have a token which resolves them, so we
1066 * resolve them immediately.
1068 klass = decode_klass_ref (module, p, &p);
1072 if (target && target->klass != klass)
1075 image_index = decode_value (p, &p);
1076 ref->token = decode_value (p, &p);
1078 image = load_image (module, image_index, TRUE);
1082 ref->method = mono_get_method_full (image, ref->token, NULL, NULL);
1086 memset (&ctx, 0, sizeof (ctx));
1088 if (FALSE && klass->generic_class) {
1089 ctx.class_inst = klass->generic_class->context.class_inst;
1090 ctx.method_inst = NULL;
1092 ref->method = mono_class_inflate_generic_method_full (ref->method, klass, &ctx);
1095 memset (&ctx, 0, sizeof (ctx));
1097 if (!decode_generic_context (module, &ctx, p, &p))
1100 ref->method = mono_class_inflate_generic_method_full (ref->method, klass, &ctx);
1101 } else if (image_index == MONO_AOT_METHODREF_ARRAY) {
1105 klass = decode_klass_ref (module, p, &p);
1108 method_type = decode_value (p, &p);
1109 switch (method_type) {
1111 ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank);
1114 ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank * 2);
1117 ref->method = mono_class_get_method_from_name (klass, "Get", -1);
1120 ref->method = mono_class_get_method_from_name (klass, "Address", -1);
1123 ref->method = mono_class_get_method_from_name (klass, "Set", -1);
1126 g_assert_not_reached ();
1129 if (image_index == MONO_AOT_METHODREF_LARGE_IMAGE_INDEX) {
1130 image_index = decode_value (p, &p);
1131 value = decode_value (p, &p);
1134 ref->token = MONO_TOKEN_METHOD_DEF | (value & 0xffffff);
1136 image = load_image (module, image_index, TRUE);
1149 decode_method_ref (MonoAotModule *module, MethodRef *ref, guint8 *buf, guint8 **endbuf)
1151 return decode_method_ref_with_target (module, ref, NULL, buf, endbuf);
1155 * decode_resolve_method_ref_with_target:
1157 * Similar to decode_method_ref, but resolve and return the method itself.
1160 decode_resolve_method_ref_with_target (MonoAotModule *module, MonoMethod *target, guint8 *buf, guint8 **endbuf)
1165 res = decode_method_ref_with_target (module, &ref, target, buf, endbuf);
1172 return mono_get_method (ref.image, ref.token, NULL);
1176 decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
1178 return decode_resolve_method_ref_with_target (module, NULL, buf, endbuf);
1182 create_cache_structure (void)
1188 home = g_get_home_dir ();
1192 tmp = g_build_filename (home, ".mono", NULL);
1193 if (!g_file_test (tmp, G_FILE_TEST_IS_DIR)) {
1194 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT creating directory %s", tmp);
1198 err = mkdir (tmp, 0777);
1201 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed: %s", g_strerror (errno));
1207 tmp = g_build_filename (home, ".mono", "aot-cache", NULL);
1208 if (!g_file_test (tmp, G_FILE_TEST_IS_DIR)) {
1209 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT creating directory %s", tmp);
1213 err = mkdir (tmp, 0777);
1216 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed: %s", g_strerror (errno));
1225 * load_aot_module_from_cache:
1227 * Experimental code to AOT compile loaded assemblies on demand.
1230 * - Add environment variable MONO_AOT_CACHE_OPTIONS
1231 * - Add options for controlling the cache size
1232 * - Handle full cache by deleting old assemblies lru style
1233 * - Add options for excluding assemblies during development
1234 * - Maybe add a threshold after an assembly is AOT compiled
1235 * - invoking a new mono process is a security risk
1236 * - recompile the AOT module if one of its dependencies changes
1239 load_aot_module_from_cache (MonoAssembly *assembly, char **aot_name)
1241 char *fname, *cmd, *tmp2, *aot_options;
1250 if (assembly->image->dynamic)
1253 create_cache_structure ();
1255 home = g_get_home_dir ();
1257 tmp2 = g_strdup_printf ("%s-%s%s", assembly->image->assembly_name, assembly->image->guid, SHARED_EXT);
1258 fname = g_build_filename (home, ".mono", "aot-cache", tmp2, NULL);
1262 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT trying to load from cache: '%s'.", fname);
1263 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
1266 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT not found.");
1268 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT precompiling assembly '%s'... ", assembly->image->name);
1270 aot_options = g_strdup_printf ("outfile=%s", fname);
1272 if (spawn_compiler) {
1273 /* FIXME: security */
1274 /* FIXME: Has to pass the assembly loading path to the child process */
1275 cmd = g_strdup_printf ("mono -O=all --aot=%s %s", aot_options, assembly->image->name);
1277 res = g_spawn_command_line_sync (cmd, &out, &err, &exit_status, NULL);
1279 #if !defined(HOST_WIN32) && !defined(__ppc__) && !defined(__ppc64__) && !defined(__powerpc__)
1281 if (!WIFEXITED (exit_status) && (WEXITSTATUS (exit_status) == 0))
1282 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT failed: %s.", err);
1284 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT succeeded.");
1291 res = mono_compile_assembly (assembly, mono_parse_default_optimizations (NULL), aot_options);
1293 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT failed.");
1295 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT succeeded.");
1299 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
1301 g_free (aot_options);
1308 find_symbol (MonoDl *module, gpointer *globals, const char *name, gpointer *value)
1312 guint16 *table, *entry;
1316 /* The first entry points to the hash */
1317 table = globals [0];
1320 table_size = table [0];
1323 hash = mono_metadata_str_hash (name) % table_size;
1325 entry = &table [hash * 2];
1327 /* Search the hash for the index into the globals table */
1329 while (entry [0] != 0) {
1330 guint32 index = entry [0] - 1;
1331 guint32 next = entry [1];
1333 //printf ("X: %s %s\n", (char*)globals [index * 2], name);
1335 if (!strcmp (globals [index * 2], name)) {
1336 global_index = index;
1341 entry = &table [next * 2];
1347 if (global_index != -1)
1348 *value = globals [global_index * 2 + 1];
1352 char *err = mono_dl_symbol (module, name, value);
1360 check_usable (MonoAssembly *assembly, MonoAotFileInfo *info, char **out_msg)
1364 gboolean usable = TRUE;
1367 guint32 excluded_cpu_optimizations;
1369 if (strcmp (assembly->image->guid, info->assembly_guid)) {
1370 msg = g_strdup_printf ("doesn't match assembly");
1374 build_info = mono_get_runtime_build_info ();
1375 if (strlen (info->runtime_version) > 0 && strcmp (info->runtime_version, build_info)) {
1376 msg = g_strdup_printf ("compiled against runtime version '%s' while this runtime has version '%s'", info->runtime_version, build_info);
1379 g_free (build_info);
1381 full_aot = info->flags & MONO_AOT_FILE_FLAG_FULL_AOT;
1383 if (mono_aot_only && !full_aot) {
1384 msg = g_strdup_printf ("not compiled with --aot=full");
1387 if (!mono_aot_only && full_aot) {
1388 msg = g_strdup_printf ("compiled with --aot=full");
1392 /* mono_arch_find_imt_method () requires this */
1393 if ((info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM) && !mono_use_llvm) {
1394 msg = g_strdup_printf ("compiled against LLVM");
1397 if (!(info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM) && mono_use_llvm) {
1398 msg = g_strdup_printf ("not compiled against LLVM");
1402 if (mini_get_debug_options ()->mdb_optimizations && !(info->flags & MONO_AOT_FILE_FLAG_DEBUG) && !full_aot) {
1403 msg = g_strdup_printf ("not compiled for debugging");
1407 mono_arch_cpu_optimizations (&excluded_cpu_optimizations);
1408 if (info->opts & excluded_cpu_optimizations) {
1409 msg = g_strdup_printf ("compiled with unsupported CPU optimizations");
1413 if (!mono_aot_only && (info->simd_opts & ~mono_arch_cpu_enumerate_simd_versions ())) {
1414 msg = g_strdup_printf ("compiled with unsupported SIMD extensions");
1420 if (info->gc_name_index != -1) {
1421 char *gc_name = (char*)&blob [info->gc_name_index];
1422 const char *current_gc_name = mono_gc_get_gc_name ();
1424 if (strcmp (current_gc_name, gc_name) != 0) {
1425 msg = g_strdup_printf ("compiled against GC %s, while the current runtime uses GC %s.\n", gc_name, current_gc_name);
1435 load_aot_module (MonoAssembly *assembly, gpointer user_data)
1438 MonoAotModule *amodule;
1440 gboolean usable = TRUE;
1441 char *version_symbol = NULL;
1443 gpointer *globals = NULL;
1444 MonoAotFileInfo *info = NULL;
1447 gboolean do_load_image = TRUE;
1449 if (mono_compile_aot)
1452 if (assembly->image->aot_module)
1454 * Already loaded. This can happen because the assembly loading code might invoke
1455 * the assembly load hooks multiple times for the same assembly.
1459 if (assembly->image->dynamic)
1462 if (mono_security_get_mode () == MONO_SECURITY_MODE_CAS)
1466 if (static_aot_modules)
1467 info = g_hash_table_lookup (static_aot_modules, assembly->aname.name);
1473 /* Statically linked AOT module */
1475 aot_name = g_strdup_printf ("%s", assembly->aname.name);
1476 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "Found statically linked AOT module '%s'.\n", aot_name);
1477 globals = info->globals;
1480 sofile = load_aot_module_from_cache (assembly, &aot_name);
1483 aot_name = g_strdup_printf ("%s%s", assembly->image->name, SHARED_EXT);
1485 sofile = mono_dl_open (aot_name, MONO_DL_LAZY, &err);
1488 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed to load AOT module %s: %s\n", aot_name, err);
1494 if (!sofile && !globals) {
1495 if (mono_aot_only && assembly->image->tables [MONO_TABLE_METHOD].rows) {
1496 fprintf (stderr, "Failed to load AOT module '%s' in aot-only mode.\n", aot_name);
1504 find_symbol (sofile, globals, "mono_aot_version", (gpointer *) &version_symbol);
1505 find_symbol (sofile, globals, "mono_aot_file_info", (gpointer*)&info);
1508 if (version_symbol) {
1509 /* Old file format */
1510 version = atoi (version_symbol);
1513 version = info->version;
1516 if (version != MONO_AOT_FILE_VERSION) {
1517 msg = g_strdup_printf ("wrong file format version (expected %d got %d)", MONO_AOT_FILE_VERSION, version);
1520 usable = check_usable (assembly, info, &msg);
1524 if (mono_aot_only) {
1525 fprintf (stderr, "Failed to load AOT module '%s' while running in aot-only mode: %s.\n", aot_name, msg);
1528 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is unusable: %s.\n", aot_name, msg);
1533 mono_dl_close (sofile);
1534 assembly->image->aot_module = NULL;
1539 g_assert (info->double_align == __alignof__ (double));
1540 g_assert (info->long_align == __alignof__ (gint64));
1544 amodule = g_new0 (MonoAotModule, 1);
1545 amodule->aot_name = aot_name;
1546 amodule->assembly = assembly;
1548 memcpy (&amodule->info, info, sizeof (*info));
1550 amodule->got = amodule->info.got;
1551 amodule->got [0] = assembly->image;
1552 amodule->globals = globals;
1553 amodule->sofile = sofile;
1554 amodule->method_to_code = g_hash_table_new (mono_aligned_addr_hash, NULL);
1555 amodule->blob = blob;
1557 /* Read image table */
1559 guint32 table_len, i;
1562 table = info->image_table;
1565 table_len = *(guint32*)table;
1566 table += sizeof (guint32);
1567 amodule->image_table = g_new0 (MonoImage*, table_len);
1568 amodule->image_names = g_new0 (MonoAssemblyName, table_len);
1569 amodule->image_guids = g_new0 (char*, table_len);
1570 amodule->image_table_len = table_len;
1571 for (i = 0; i < table_len; ++i) {
1572 MonoAssemblyName *aname = &(amodule->image_names [i]);
1574 aname->name = g_strdup (table);
1575 table += strlen (table) + 1;
1576 amodule->image_guids [i] = g_strdup (table);
1577 table += strlen (table) + 1;
1579 aname->culture = g_strdup (table);
1580 table += strlen (table) + 1;
1581 memcpy (aname->public_key_token, table, strlen (table) + 1);
1582 table += strlen (table) + 1;
1584 table = ALIGN_PTR_TO (table, 8);
1585 aname->flags = *(guint32*)table;
1587 aname->major = *(guint32*)table;
1589 aname->minor = *(guint32*)table;
1591 aname->build = *(guint32*)table;
1593 aname->revision = *(guint32*)table;
1598 amodule->code_offsets = info->code_offsets;
1600 amodule->method_addresses = info->method_addresses;
1602 amodule->code = info->methods;
1604 /* Mask out thumb interop bit */
1605 amodule->code = (void*)((mgreg_t)amodule->code & ~1);
1607 amodule->code_end = info->methods_end;
1608 amodule->method_info_offsets = info->method_info_offsets;
1609 amodule->ex_info_offsets = info->ex_info_offsets;
1610 amodule->class_info_offsets = info->class_info_offsets;
1611 amodule->class_name_table = info->class_name_table;
1612 amodule->extra_method_table = info->extra_method_table;
1613 amodule->extra_method_info_offsets = info->extra_method_info_offsets;
1614 amodule->unbox_trampolines = info->unbox_trampolines;
1615 amodule->unbox_trampolines_end = info->unbox_trampolines_end;
1616 amodule->got_info_offsets = info->got_info_offsets;
1617 amodule->unwind_info = info->unwind_info;
1618 amodule->mem_end = info->mem_end;
1619 amodule->mem_begin = amodule->code;
1620 amodule->plt = info->plt;
1621 amodule->plt_end = info->plt_end;
1622 amodule->mono_eh_frame = info->mono_eh_frame;
1623 amodule->trampolines [MONO_AOT_TRAMP_SPECIFIC] = info->specific_trampolines;
1624 amodule->trampolines [MONO_AOT_TRAMP_STATIC_RGCTX] = info->static_rgctx_trampolines;
1625 amodule->trampolines [MONO_AOT_TRAMP_IMT_THUNK] = info->imt_thunks;
1626 amodule->trampolines [MONO_AOT_TRAMP_GSHAREDVT_ARG] = info->gsharedvt_arg_trampolines;
1627 amodule->thumb_end = info->thumb_end;
1630 if (info->flags & MONO_AOT_FILE_FLAG_DIRECT_METHOD_ADDRESSES) {
1631 /* Compute code_offsets from the method addresses */
1632 amodule->code_offsets = g_malloc0 (amodule->info.nmethods * sizeof (gint32));
1633 for (i = 0; i < amodule->info.nmethods; ++i) {
1634 if (!amodule->method_addresses [i])
1635 amodule->code_offsets [i] = 0xffffffff;
1637 amodule->code_offsets [i] = (char*)amodule->method_addresses [i] - (char*)amodule->code;
1642 if (make_unreadable) {
1643 #ifndef TARGET_WIN32
1645 guint8 *page_start, *page_end;
1648 addr = amodule->mem_begin;
1649 len = amodule->mem_end - amodule->mem_begin;
1651 /* Round down in both directions to avoid modifying data which is not ours */
1652 page_start = (guint8 *) (((gssize) (addr)) & ~ (mono_pagesize () - 1)) + mono_pagesize ();
1653 page_end = (guint8 *) (((gssize) (addr + len)) & ~ (mono_pagesize () - 1));
1654 if (page_end > page_start) {
1655 err = mono_mprotect (page_start, (page_end - page_start), MONO_MMAP_NONE);
1656 g_assert (err == 0);
1663 aot_code_low_addr = MIN (aot_code_low_addr, (gsize)amodule->code);
1664 aot_code_high_addr = MAX (aot_code_high_addr, (gsize)amodule->code_end);
1666 g_hash_table_insert (aot_modules, assembly, amodule);
1669 mono_jit_info_add_aot_module (assembly->image, amodule->code, amodule->code_end);
1671 assembly->image->aot_module = amodule;
1673 if (mono_aot_only) {
1675 find_symbol (amodule->sofile, amodule->globals, "specific_trampolines_page", (gpointer *)&code);
1676 amodule->use_page_trampolines = code != NULL;
1677 /*g_warning ("using page trampolines: %d", amodule->use_page_trampolines);*/
1678 if (mono_defaults.corlib) {
1679 /* The second got slot contains the mscorlib got addr */
1680 MonoAotModule *mscorlib_amodule = mono_defaults.corlib->aot_module;
1682 amodule->got [1] = mscorlib_amodule->got;
1684 amodule->got [1] = amodule->got;
1688 if (mono_gc_is_moving ()) {
1691 memset (&ji, 0, sizeof (ji));
1692 ji.type = MONO_PATCH_INFO_GC_CARD_TABLE_ADDR;
1694 amodule->got [2] = mono_resolve_patch_target (NULL, mono_get_root_domain (), NULL, &ji, FALSE);
1698 * Since we store methoddef and classdef tokens when referring to methods/classes in
1699 * referenced assemblies, we depend on the exact versions of the referenced assemblies.
1700 * MS calls this 'hard binding'. This means we have to load all referenced assemblies
1701 * non-lazily, since we can't handle out-of-date errors later.
1702 * The cached class info also depends on the exact assemblies.
1704 #if defined(__native_client__)
1705 /* TODO: Don't 'load_image' on mscorlib due to a */
1706 /* recursive loading problem. This should be */
1707 /* removed if mscorlib is loaded from disk. */
1708 if (strncmp(assembly->aname.name, "mscorlib", 8)) {
1709 do_load_image = TRUE;
1711 do_load_image = FALSE;
1714 if (do_load_image) {
1715 for (i = 0; i < amodule->image_table_len; ++i)
1716 load_image (amodule, i, FALSE);
1719 if (amodule->out_of_date) {
1720 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);
1721 if (mono_aot_only) {
1722 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);
1727 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT loaded AOT Module for %s.\n", assembly->image->name);
1731 * mono_aot_register_globals:
1733 * This is called by the ctor function in AOT images compiled with the
1734 * 'no-dlsym' option.
1737 mono_aot_register_globals (gpointer *globals)
1739 g_assert_not_reached ();
1743 * mono_aot_register_module:
1745 * This should be called by embedding code to register AOT modules statically linked
1746 * into the executable. AOT_INFO should be the value of the
1747 * 'mono_aot_module_<ASSEMBLY_NAME>_info' global symbol from the AOT module.
1750 mono_aot_register_module (gpointer *aot_info)
1754 MonoAotFileInfo *info = (gpointer)aot_info;
1756 g_assert (info->version == MONO_AOT_FILE_VERSION);
1758 globals = info->globals;
1761 aname = info->assembly_name;
1763 /* This could be called before startup */
1767 if (!static_aot_modules)
1768 static_aot_modules = g_hash_table_new (g_str_hash, g_str_equal);
1770 g_hash_table_insert (static_aot_modules, aname, info);
1777 mono_aot_init (void)
1779 InitializeCriticalSection (&aot_mutex);
1780 InitializeCriticalSection (&aot_page_mutex);
1781 aot_modules = g_hash_table_new (NULL, NULL);
1783 mono_install_assembly_load_hook (load_aot_module, NULL);
1785 if (g_getenv ("MONO_LASTAOT"))
1786 mono_last_aot_method = atoi (g_getenv ("MONO_LASTAOT"));
1787 if (g_getenv ("MONO_AOT_CACHE"))
1788 use_aot_cache = TRUE;
1792 mono_aot_cleanup (void)
1794 if (aot_jit_icall_hash)
1795 g_hash_table_destroy (aot_jit_icall_hash);
1797 g_hash_table_destroy (aot_modules);
1801 decode_cached_class_info (MonoAotModule *module, MonoCachedClassInfo *info, guint8 *buf, guint8 **endbuf)
1807 info->vtable_size = decode_value (buf, &buf);
1808 if (info->vtable_size == -1)
1811 flags = decode_value (buf, &buf);
1812 info->ghcimpl = (flags >> 0) & 0x1;
1813 info->has_finalize = (flags >> 1) & 0x1;
1814 info->has_cctor = (flags >> 2) & 0x1;
1815 info->has_nested_classes = (flags >> 3) & 0x1;
1816 info->blittable = (flags >> 4) & 0x1;
1817 info->has_references = (flags >> 5) & 0x1;
1818 info->has_static_refs = (flags >> 6) & 0x1;
1819 info->no_special_static_fields = (flags >> 7) & 0x1;
1820 info->is_generic_container = (flags >> 8) & 0x1;
1822 if (info->has_cctor) {
1823 res = decode_method_ref (module, &ref, buf, &buf);
1826 info->cctor_token = ref.token;
1828 if (info->has_finalize) {
1829 res = decode_method_ref (module, &ref, buf, &buf);
1832 info->finalize_image = ref.image;
1833 info->finalize_token = ref.token;
1836 info->instance_size = decode_value (buf, &buf);
1837 info->class_size = decode_value (buf, &buf);
1838 info->packing_size = decode_value (buf, &buf);
1839 info->min_align = decode_value (buf, &buf);
1847 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
1850 MonoClass *klass = vtable->klass;
1851 MonoAotModule *amodule = klass->image->aot_module;
1853 MonoCachedClassInfo class_info;
1858 if (MONO_CLASS_IS_INTERFACE (klass) || klass->rank || !amodule)
1861 info = &amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
1864 err = decode_cached_class_info (amodule, &class_info, p, &p);
1868 for (i = 0; i < slot; ++i)
1869 decode_method_ref (amodule, &ref, p, &p);
1871 res = decode_method_ref (amodule, &ref, p, &p);
1874 if (ref.no_aot_trampoline)
1877 if (mono_metadata_token_index (ref.token) == 0 || mono_metadata_token_table (ref.token) != MONO_TABLE_METHOD)
1880 return mono_aot_get_method_from_token (domain, ref.image, ref.token);
1884 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
1886 MonoAotModule *amodule = klass->image->aot_module;
1890 if (klass->rank || !amodule)
1893 p = (guint8*)&amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
1895 err = decode_cached_class_info (amodule, res, p, &p);
1903 * mono_aot_get_class_from_name:
1905 * Obtains a MonoClass with a given namespace and a given name which is located in IMAGE,
1906 * using a cache stored in the AOT file.
1907 * Stores the resulting class in *KLASS if found, stores NULL otherwise.
1909 * Returns: TRUE if the klass was found/not found in the cache, FALSE if no aot file was
1913 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
1915 MonoAotModule *amodule = image->aot_module;
1916 guint16 *table, *entry;
1919 char full_name_buf [1024];
1921 const char *name2, *name_space2;
1923 guint32 cols [MONO_TYPEDEF_SIZE];
1924 GHashTable *nspace_table;
1926 if (!amodule || !amodule->class_name_table)
1933 /* First look in the cache */
1934 if (!amodule->name_cache)
1935 amodule->name_cache = g_hash_table_new (g_str_hash, g_str_equal);
1936 nspace_table = g_hash_table_lookup (amodule->name_cache, name_space);
1938 *klass = g_hash_table_lookup (nspace_table, name);
1945 table_size = amodule->class_name_table [0];
1946 table = amodule->class_name_table + 1;
1948 if (name_space [0] == '\0')
1949 full_name = g_strdup_printf ("%s", name);
1951 if (strlen (name_space) + strlen (name) < 1000) {
1952 sprintf (full_name_buf, "%s.%s", name_space, name);
1953 full_name = full_name_buf;
1955 full_name = g_strdup_printf ("%s.%s", name_space, name);
1958 hash = mono_metadata_str_hash (full_name) % table_size;
1959 if (full_name != full_name_buf)
1962 entry = &table [hash * 2];
1964 if (entry [0] != 0) {
1965 t = &image->tables [MONO_TABLE_TYPEDEF];
1968 guint32 index = entry [0];
1969 guint32 next = entry [1];
1970 guint32 token = mono_metadata_make_token (MONO_TABLE_TYPEDEF, index);
1972 name_table_accesses ++;
1974 mono_metadata_decode_row (t, index - 1, cols, MONO_TYPEDEF_SIZE);
1976 name2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
1977 name_space2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
1979 if (!strcmp (name, name2) && !strcmp (name_space, name_space2)) {
1981 *klass = mono_class_get (image, token);
1986 nspace_table = g_hash_table_lookup (amodule->name_cache, name_space);
1987 if (!nspace_table) {
1988 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
1989 g_hash_table_insert (amodule->name_cache, (char*)name_space2, nspace_table);
1991 g_hash_table_insert (nspace_table, (char*)name2, *klass);
1998 entry = &table [next * 2];
2011 * decode_mono_eh_frame:
2013 * Decode the EH information emitted by our modified LLVM compiler and construct a
2014 * MonoJitInfo structure from it.
2015 * LOCKING: Acquires the domain lock.
2018 decode_llvm_mono_eh_frame (MonoAotModule *amodule, MonoDomain *domain,
2019 MonoMethod *method, guint8 *code,
2020 MonoJitExceptionInfo *clauses, int num_clauses,
2021 int extra_size, GSList **nesting,
2022 int *this_reg, int *this_offset)
2025 guint8 *fde, *cie, *code_start, *code_end;
2026 int version, fde_count;
2028 int i, j, pos, left, right, offset, offset1, offset2, code_len, func_encoding;
2029 MonoJitExceptionInfo *ei;
2030 guint32 fde_len, ei_len, nested_len, nindex;
2031 gpointer *type_info;
2033 MonoLLVMFDEInfo info;
2035 g_assert (amodule->mono_eh_frame);
2037 p = amodule->mono_eh_frame;
2039 /* p points to data emitted by LLVM in DwarfException::EmitMonoEHFrame () */
2043 g_assert (version == 1 || version == 2);
2049 func_encoding = DW_EH_PE_pcrel;
2051 p = ALIGN_PTR_TO (p, 4);
2053 fde_count = *(guint32*)p;
2057 /* There is +1 entry in the table */
2058 cie = p + ((fde_count + 1) * 8);
2060 /* Binary search in the table to find the entry for code */
2061 offset = code - amodule->mono_eh_frame;
2066 pos = (left + right) / 2;
2068 offset1 = table [(pos * 2)];
2069 if (pos + 1 == fde_count) {
2071 offset2 = amodule->code_end - amodule->code;
2073 /* Encoded as DW_EH_PE_pcrel, but relative to mono_eh_frame */
2074 offset2 = table [(pos + 1) * 2];
2077 if (func_encoding == DW_EH_PE_absptr) {
2079 * Encoded as DW_EH_PE_absptr, because the ios linker can move functions inside object files to make thumb work,
2080 * so the offsets between two symbols in the text segment are not assembler constant.
2082 g_assert (sizeof(gpointer) == 4);
2083 offset1 -= (gint32)(gsize)amodule->mono_eh_frame;
2084 offset2 -= (gint32)(gsize)amodule->mono_eh_frame;
2087 if (offset < offset1)
2089 else if (offset >= offset2)
2095 if (func_encoding == DW_EH_PE_absptr) {
2096 code_start = (gpointer)(gsize)table [(pos * 2)];
2097 code_end = (gpointer)(gsize)table [(pos * 2) + 2];
2099 code_start = amodule->mono_eh_frame + table [(pos * 2)];
2100 /* This won't overflow because there is +1 entry in the table */
2101 code_end = amodule->mono_eh_frame + table [(pos * 2) + 2];
2103 code_len = code_end - code_start;
2105 g_assert (code >= code_start && code < code_end);
2107 if (amodule->thumb_end && (guint8*)code_start < amodule->thumb_end)
2108 /* Clear thumb flag */
2109 code_start = (guint8*)(((mgreg_t)code_start) & ~1);
2111 fde = amodule->mono_eh_frame + table [(pos * 2) + 1];
2112 /* This won't overflow because there is +1 entry in the table */
2113 fde_len = table [(pos * 2) + 2 + 1] - table [(pos * 2) + 1];
2115 mono_unwind_decode_llvm_mono_fde (fde, fde_len, cie, code_start, &info);
2117 ei_len = info.ex_info_len;
2118 type_info = info.type_info;
2119 *this_reg = info.this_reg;
2120 *this_offset = info.this_offset;
2122 /* Count number of nested clauses */
2124 for (i = 0; i < ei_len; ++i) {
2125 /* This might be unaligned */
2126 gint32 cindex1 = read32 (type_info [i]);
2129 for (l = nesting [cindex1]; l; l = l->next) {
2130 gint32 nesting_cindex = GPOINTER_TO_INT (l->data);
2132 for (j = 0; j < ei_len; ++j) {
2133 gint32 cindex2 = read32 (type_info [j]);
2135 if (cindex2 == nesting_cindex)
2142 * LLVM might represent one IL region with multiple regions, so have to
2143 * allocate a new JI.
2146 mono_domain_alloc0 (domain, MONO_SIZEOF_JIT_INFO + (sizeof (MonoJitExceptionInfo) * (ei_len + nested_len)) + extra_size);
2148 jinfo->code_size = code_len;
2149 jinfo->used_regs = mono_cache_unwind_info (info.unw_info, info.unw_info_len);
2150 jinfo->method = method;
2151 jinfo->code_start = code;
2152 jinfo->domain_neutral = 0;
2153 /* This signals that used_regs points to a normal cached unwind info */
2154 jinfo->from_aot = 0;
2155 jinfo->num_clauses = ei_len + nested_len;
2157 for (i = 0; i < ei_len; ++i) {
2159 * orig_jinfo contains the original IL exception info saved by the AOT
2160 * compiler, we have to combine that with the information produced by LLVM
2162 /* The type_info entries contain IL clause indexes */
2163 int clause_index = read32 (type_info [i]);
2164 MonoJitExceptionInfo *jei = &jinfo->clauses [i];
2165 MonoJitExceptionInfo *orig_jei = &clauses [clause_index];
2167 g_assert (clause_index < num_clauses);
2168 jei->flags = orig_jei->flags;
2169 jei->data.catch_class = orig_jei->data.catch_class;
2171 jei->try_start = ei [i].try_start;
2172 jei->try_end = ei [i].try_end;
2173 jei->handler_start = ei [i].handler_start;
2175 /* Make sure we transition to thumb when a handler starts */
2176 if (amodule->thumb_end && (guint8*)jei->handler_start < amodule->thumb_end)
2177 jei->handler_start = (void*)((mgreg_t)jei->handler_start + 1);
2180 /* See exception_cb () in mini-llvm.c as to why this is needed */
2182 for (i = 0; i < ei_len; ++i) {
2183 gint32 cindex1 = read32 (type_info [i]);
2186 for (l = nesting [cindex1]; l; l = l->next) {
2187 gint32 nesting_cindex = GPOINTER_TO_INT (l->data);
2189 for (j = 0; j < ei_len; ++j) {
2190 gint32 cindex2 = read32 (type_info [j]);
2192 if (cindex2 == nesting_cindex) {
2194 * The try interval comes from the nested clause, everything else from the
2197 memcpy (&jinfo->clauses [nindex], &jinfo->clauses [j], sizeof (MonoJitExceptionInfo));
2198 jinfo->clauses [nindex].try_start = jinfo->clauses [i].try_start;
2199 jinfo->clauses [nindex].try_end = jinfo->clauses [i].try_end;
2205 g_assert (nindex == ei_len + nested_len);
2211 * LOCKING: Acquires the domain lock.
2214 decode_exception_debug_info (MonoAotModule *amodule, MonoDomain *domain,
2215 MonoMethod *method, guint8* ex_info, guint8 *addr,
2216 guint8 *code, guint32 code_len)
2218 int i, buf_len, num_clauses;
2220 guint used_int_regs, flags;
2221 gboolean has_generic_jit_info, has_dwarf_unwind_info, has_clauses, has_seq_points, has_try_block_holes, has_arch_eh_jit_info;
2222 gboolean from_llvm, has_gc_map;
2224 int generic_info_size, try_holes_info_size, num_holes, arch_eh_jit_info_size;
2225 int this_reg = 0, this_offset = 0;
2227 /* Load the method info from the AOT file */
2230 flags = decode_value (p, &p);
2231 has_generic_jit_info = (flags & 1) != 0;
2232 has_dwarf_unwind_info = (flags & 2) != 0;
2233 has_clauses = (flags & 4) != 0;
2234 has_seq_points = (flags & 8) != 0;
2235 from_llvm = (flags & 16) != 0;
2236 has_try_block_holes = (flags & 32) != 0;
2237 has_gc_map = (flags & 64) != 0;
2238 has_arch_eh_jit_info = (flags & 128) != 0;
2240 if (has_dwarf_unwind_info) {
2243 offset = decode_value (p, &p);
2244 g_assert (offset < (1 << 30));
2245 used_int_regs = offset;
2247 used_int_regs = decode_value (p, &p);
2249 if (has_generic_jit_info)
2250 generic_info_size = sizeof (MonoGenericJitInfo);
2252 generic_info_size = 0;
2254 if (has_try_block_holes) {
2255 num_holes = decode_value (p, &p);
2256 try_holes_info_size = sizeof (MonoTryBlockHoleTableJitInfo) + num_holes * sizeof (MonoTryBlockHoleJitInfo);
2258 num_holes = try_holes_info_size = 0;
2260 /* Exception table */
2262 num_clauses = decode_value (p, &p);
2265 if (has_arch_eh_jit_info)
2266 arch_eh_jit_info_size = sizeof (MonoArchEHJitInfo);
2268 arch_eh_jit_info_size = 0;
2271 MonoJitExceptionInfo *clauses;
2275 * Part of the info is encoded by the AOT compiler, the rest is in the .eh_frame
2278 clauses = g_new0 (MonoJitExceptionInfo, num_clauses);
2279 nesting = g_new0 (GSList*, num_clauses);
2281 for (i = 0; i < num_clauses; ++i) {
2282 MonoJitExceptionInfo *ei = &clauses [i];
2284 ei->flags = decode_value (p, &p);
2286 if (decode_value (p, &p))
2287 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
2289 /* Read the list of nesting clauses */
2291 int nesting_index = decode_value (p, &p);
2292 if (nesting_index == -1)
2294 nesting [i] = g_slist_prepend (nesting [i], GINT_TO_POINTER (nesting_index));
2298 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);
2299 jinfo->from_llvm = 1;
2302 for (i = 0; i < num_clauses; ++i)
2303 g_slist_free (nesting [i]);
2307 mono_domain_alloc0 (domain, MONO_SIZEOF_JIT_INFO + (sizeof (MonoJitExceptionInfo) * num_clauses) + generic_info_size + try_holes_info_size + arch_eh_jit_info_size);
2308 jinfo->num_clauses = num_clauses;
2310 for (i = 0; i < jinfo->num_clauses; ++i) {
2311 MonoJitExceptionInfo *ei = &jinfo->clauses [i];
2313 ei->flags = decode_value (p, &p);
2315 ei->exvar_offset = decode_value (p, &p);
2317 if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER || ei->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
2318 ei->data.filter = code + decode_value (p, &p);
2320 if (decode_value (p, &p))
2321 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
2324 ei->try_start = code + decode_value (p, &p);
2325 ei->try_end = code + decode_value (p, &p);
2326 ei->handler_start = code + decode_value (p, &p);
2329 jinfo->code_size = code_len;
2330 jinfo->used_regs = used_int_regs;
2331 jinfo->method = method;
2332 jinfo->code_start = code;
2333 jinfo->domain_neutral = 0;
2334 jinfo->from_aot = 1;
2337 if (has_generic_jit_info) {
2338 MonoGenericJitInfo *gi;
2340 jinfo->has_generic_jit_info = 1;
2342 gi = mono_jit_info_get_generic_jit_info (jinfo);
2345 gi->nlocs = decode_value (p, &p);
2347 gi->locations = mono_domain_alloc0 (domain, gi->nlocs * sizeof (MonoDwarfLocListEntry));
2348 for (i = 0; i < gi->nlocs; ++i) {
2349 MonoDwarfLocListEntry *entry = &gi->locations [i];
2351 entry->is_reg = decode_value (p, &p);
2352 entry->reg = decode_value (p, &p);
2354 entry->offset = decode_value (p, &p);
2356 entry->from = decode_value (p, &p);
2357 entry->to = decode_value (p, &p);
2361 gi->has_this = this_reg != -1;
2362 gi->this_reg = this_reg;
2363 gi->this_offset = this_offset;
2365 gi->has_this = decode_value (p, &p);
2366 gi->this_reg = decode_value (p, &p);
2367 gi->this_offset = decode_value (p, &p);
2371 jinfo->method = decode_resolve_method_ref (amodule, p, &p);
2373 gi->generic_sharing_context = g_new0 (MonoGenericSharingContext, 1);
2374 if (decode_value (p, &p)) {
2377 MonoGenericSharingContext *gsctx = gi->generic_sharing_context;
2379 n = decode_value (p, &p);
2381 gsctx->var_is_vt = g_new0 (gboolean, n);
2382 for (i = 0; i < n; ++i)
2383 gsctx->var_is_vt [i] = decode_value (p, &p);
2385 n = decode_value (p, &p);
2387 gsctx->mvar_is_vt = g_new0 (gboolean, n);
2388 for (i = 0; i < n; ++i)
2389 gsctx->mvar_is_vt [i] = decode_value (p, &p);
2394 if (has_try_block_holes) {
2395 MonoTryBlockHoleTableJitInfo *table;
2397 jinfo->has_try_block_holes = 1;
2399 table = mono_jit_info_get_try_block_hole_table_info (jinfo);
2402 table->num_holes = (guint16)num_holes;
2403 for (i = 0; i < num_holes; ++i) {
2404 MonoTryBlockHoleJitInfo *hole = &table->holes [i];
2405 hole->clause = decode_value (p, &p);
2406 hole->length = decode_value (p, &p);
2407 hole->offset = decode_value (p, &p);
2411 if (has_arch_eh_jit_info) {
2412 MonoArchEHJitInfo *eh_info;
2414 jinfo->has_arch_eh_info = 1;
2416 eh_info = mono_jit_info_get_arch_eh_info (jinfo);
2417 eh_info->stack_size = decode_value (p, &p);
2420 if (has_seq_points) {
2421 MonoSeqPointInfo *seq_points;
2422 int il_offset, native_offset, last_il_offset, last_native_offset, j;
2424 int len = decode_value (p, &p);
2426 seq_points = g_malloc0 (sizeof (MonoSeqPointInfo) + (len - MONO_ZERO_LEN_ARRAY) * sizeof (SeqPoint));
2427 seq_points->len = len;
2428 last_il_offset = last_native_offset = 0;
2429 for (i = 0; i < len; ++i) {
2430 SeqPoint *sp = &seq_points->seq_points [i];
2431 il_offset = last_il_offset + decode_value (p, &p);
2432 native_offset = last_native_offset + decode_value (p, &p);
2434 sp->il_offset = il_offset;
2435 sp->native_offset = native_offset;
2437 sp->next_len = decode_value (p, &p);
2438 sp->next = g_new (int, sp->next_len);
2439 for (j = 0; j < sp->next_len; ++j)
2440 sp->next [j] = decode_value (p, &p);
2442 last_il_offset = il_offset;
2443 last_native_offset = native_offset;
2446 mono_domain_lock (domain);
2447 g_hash_table_insert (domain_jit_info (domain)->seq_points, method, seq_points);
2448 mono_domain_unlock (domain);
2451 /* Load debug info */
2452 buf_len = decode_value (p, &p);
2453 mono_debug_add_aot_method (domain, method, code, p, buf_len);
2457 int map_size = decode_value (p, &p);
2458 /* The GC map requires 4 bytes of alignment */
2459 while ((guint64)(gsize)p % 4)
2465 if (amodule != jinfo->method->klass->image->aot_module) {
2468 ji_to_amodule = g_hash_table_new (NULL, NULL);
2469 g_hash_table_insert (ji_to_amodule, jinfo, amodule);
2477 * mono_aot_get_unwind_info:
2479 * Return a pointer to the DWARF unwind info belonging to JI.
2482 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
2484 MonoAotModule *amodule = ji->method->klass->image->aot_module;
2486 guint8 *code = ji->code_start;
2489 g_assert (ji->from_aot);
2491 if (!(code >= amodule->code && code <= amodule->code_end)) {
2492 /* ji belongs to a different aot module than amodule */
2494 g_assert (ji_to_amodule);
2495 amodule = g_hash_table_lookup (ji_to_amodule, ji);
2497 g_assert (code >= amodule->code && code <= amodule->code_end);
2501 p = amodule->unwind_info + ji->used_regs;
2502 *unwind_info_len = decode_value (p, &p);
2506 static G_GNUC_UNUSED int
2507 compare_ints (const void *a, const void *b)
2509 return *(gint32*)a - *(gint32*)b;
2513 msort_code_offsets_internal (gint32 *array, int lo, int hi, gint32 *scratch)
2515 int mid = (lo + hi) / 2;
2522 for (i = lo; i < hi; ++i)
2523 if (array [(i * 2)] > array [(i * 2) + 2])
2526 /* Already sorted */
2530 msort_code_offsets_internal (array, lo, mid, scratch);
2531 msort_code_offsets_internal (array, mid + 1, hi, scratch);
2533 if (array [mid * 2] < array [(mid + 1) * 2])
2539 for (i = lo; i <= hi; i ++) {
2540 if (t_lo <= mid && ((t_hi > hi) || array [t_lo * 2] < array [t_hi * 2])) {
2541 scratch [(i * 2)] = array [t_lo * 2];
2542 scratch [(i * 2) + 1] = array [(t_lo *2) + 1];
2545 scratch [(i * 2)] = array [t_hi * 2];
2546 scratch [(i * 2) + 1] = array [(t_hi *2) + 1];
2550 for (i = lo; i <= hi; ++i) {
2551 array [(i * 2)] = scratch [i * 2];
2552 array [(i * 2) + 1] = scratch [(i * 2) + 1];
2557 msort_code_offsets (gint32 *array, int len)
2561 scratch = g_new (gint32, len * 2);
2562 msort_code_offsets_internal (array, 0, len - 1, scratch);
2567 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
2569 int pos, left, right, offset, offset1, offset2, code_len;
2570 int method_index, table_len;
2572 MonoAotModule *amodule = image->aot_module;
2575 guint8 *code, *ex_info, *p;
2577 int nmethods = amodule->info.nmethods;
2578 gint32 *code_offsets;
2584 if (domain != mono_get_root_domain ())
2588 offset = (guint8*)addr - amodule->code;
2590 /* Compute a sorted table mapping code offsets to method indexes. */
2591 if (!amodule->sorted_code_offsets) {
2592 code_offsets = g_new0 (gint32, nmethods * 2);
2594 for (i = 0; i < nmethods; ++i) {
2595 /* Skip the -1 entries to speed up sorting */
2596 if (amodule->code_offsets [i] == 0xffffffff)
2598 code_offsets [(offsets_len * 2)] = amodule->code_offsets [i];
2599 code_offsets [(offsets_len *2) + 1] = i;
2602 /* Use a merge sort as this is mostly sorted */
2603 msort_code_offsets (code_offsets, offsets_len);
2604 //qsort (code_offsets, offsets_len, sizeof (gint32) * 2, compare_ints);
2605 for (i = 0; i < offsets_len -1; ++i)
2606 g_assert (code_offsets [(i * 2)] <= code_offsets [(i + 1) * 2]);
2608 amodule->sorted_code_offsets_len = offsets_len;
2609 mono_memory_barrier ();
2610 if (InterlockedCompareExchangePointer ((gpointer*)&amodule->sorted_code_offsets, code_offsets, NULL) != NULL)
2611 /* Somebody got in before us */
2612 g_free (code_offsets);
2615 code_offsets = amodule->sorted_code_offsets;
2616 offsets_len = amodule->sorted_code_offsets_len;
2618 if (offsets_len > 0 && (offset < code_offsets [0] || offset >= (amodule->code_end - amodule->code)))
2621 /* Binary search in the sorted_code_offsets table */
2623 right = offsets_len;
2625 pos = (left + right) / 2;
2627 offset1 = code_offsets [(pos * 2)];
2628 if (pos + 1 == offsets_len)
2629 offset2 = amodule->code_end - amodule->code;
2631 offset2 = code_offsets [(pos + 1) * 2];
2633 if (offset < offset1)
2635 else if (offset >= offset2)
2641 g_assert (offset >= code_offsets [(pos * 2)]);
2642 if (pos + 1 < offsets_len)
2643 g_assert (offset < code_offsets [((pos + 1) * 2)]);
2644 method_index = code_offsets [(pos * 2) + 1];
2646 code = &amodule->code [amodule->code_offsets [method_index]];
2647 ex_info = &amodule->blob [mono_aot_get_offset (amodule->ex_info_offsets, method_index)];
2649 if (pos == offsets_len - 1)
2650 code_len = amodule->code_end - code;
2652 code_len = code_offsets [(pos + 1) * 2] - code_offsets [pos * 2];
2654 g_assert ((guint8*)code <= (guint8*)addr && (guint8*)addr < (guint8*)code + code_len);
2656 /* Might be a wrapper/extra method */
2657 if (amodule->extra_methods) {
2659 method = g_hash_table_lookup (amodule->extra_methods, GUINT_TO_POINTER (method_index));
2666 if (method_index >= image->tables [MONO_TABLE_METHOD].rows) {
2668 * This is hit for extra methods which are called directly, so they are
2669 * not in amodule->extra_methods.
2671 table_len = amodule->extra_method_info_offsets [0];
2672 table = amodule->extra_method_info_offsets + 1;
2679 pos = ((left + right) / 2);
2681 g_assert (pos < table_len);
2683 if (table [pos * 2] < method_index)
2685 else if (table [pos * 2] > method_index)
2691 p = amodule->blob + table [(pos * 2) + 1];
2692 method = decode_resolve_method_ref (amodule, p, &p);
2694 /* Happens when a random address is passed in which matches a not-yey called wrapper encoded using its name */
2697 token = mono_metadata_make_token (MONO_TABLE_METHOD, method_index + 1);
2698 method = mono_get_method (image, token, NULL);
2705 //printf ("F: %s\n", mono_method_full_name (method, TRUE));
2707 jinfo = decode_exception_debug_info (amodule, domain, method, ex_info, addr, code, code_len);
2709 g_assert ((guint8*)addr >= (guint8*)jinfo->code_start);
2710 g_assert ((guint8*)addr < (guint8*)jinfo->code_start + jinfo->code_size);
2712 /* Add it to the normal JitInfo tables */
2713 mono_jit_info_table_add (domain, jinfo);
2719 decode_patch (MonoAotModule *aot_module, MonoMemPool *mp, MonoJumpInfo *ji, guint8 *buf, guint8 **endbuf)
2727 case MONO_PATCH_INFO_METHOD:
2728 case MONO_PATCH_INFO_METHOD_JUMP:
2729 case MONO_PATCH_INFO_ICALL_ADDR:
2730 case MONO_PATCH_INFO_METHOD_RGCTX: {
2734 res = decode_method_ref (aot_module, &ref, p, &p);
2738 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)) {
2739 ji->data.target = mono_create_ftnptr (mono_domain_get (), mono_create_jit_trampoline_from_token (ref.image, ref.token));
2740 ji->type = MONO_PATCH_INFO_ABS;
2744 ji->data.method = ref.method;
2746 ji->data.method = mono_get_method (ref.image, ref.token, NULL);
2747 g_assert (ji->data.method);
2748 mono_class_init (ji->data.method->klass);
2752 case MONO_PATCH_INFO_INTERNAL_METHOD:
2753 case MONO_PATCH_INFO_JIT_ICALL_ADDR: {
2754 guint32 len = decode_value (p, &p);
2756 ji->data.name = (char*)p;
2760 case MONO_PATCH_INFO_METHODCONST:
2762 ji->data.method = decode_resolve_method_ref (aot_module, p, &p);
2763 if (!ji->data.method)
2766 case MONO_PATCH_INFO_VTABLE:
2767 case MONO_PATCH_INFO_CLASS:
2768 case MONO_PATCH_INFO_IID:
2769 case MONO_PATCH_INFO_ADJUSTED_IID:
2771 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2772 if (!ji->data.klass)
2775 case MONO_PATCH_INFO_CLASS_INIT:
2776 case MONO_PATCH_INFO_DELEGATE_TRAMPOLINE:
2777 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2778 if (!ji->data.klass)
2781 case MONO_PATCH_INFO_IMAGE:
2782 ji->data.image = load_image (aot_module, decode_value (p, &p), TRUE);
2783 if (!ji->data.image)
2786 case MONO_PATCH_INFO_FIELD:
2787 case MONO_PATCH_INFO_SFLDA:
2789 ji->data.field = decode_field_info (aot_module, p, &p);
2790 if (!ji->data.field)
2793 case MONO_PATCH_INFO_SWITCH:
2794 ji->data.table = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoBBTable));
2795 ji->data.table->table_size = decode_value (p, &p);
2796 table = mono_domain_alloc (mono_domain_get (), sizeof (gpointer) * ji->data.table->table_size);
2797 ji->data.table->table = (MonoBasicBlock**)table;
2798 for (i = 0; i < ji->data.table->table_size; i++)
2799 table [i] = (gpointer)(gssize)decode_value (p, &p);
2801 case MONO_PATCH_INFO_R4: {
2804 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (float));
2805 val = decode_value (p, &p);
2806 *(float*)ji->data.target = *(float*)&val;
2809 case MONO_PATCH_INFO_R8: {
2813 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (double));
2815 val [0] = decode_value (p, &p);
2816 val [1] = decode_value (p, &p);
2817 v = ((guint64)val [1] << 32) | ((guint64)val [0]);
2818 *(double*)ji->data.target = *(double*)&v;
2821 case MONO_PATCH_INFO_LDSTR:
2822 image = load_image (aot_module, decode_value (p, &p), TRUE);
2825 ji->data.token = mono_jump_info_token_new (mp, image, MONO_TOKEN_STRING + decode_value (p, &p));
2827 case MONO_PATCH_INFO_RVA:
2828 case MONO_PATCH_INFO_DECLSEC:
2829 case MONO_PATCH_INFO_LDTOKEN:
2830 case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
2832 image = load_image (aot_module, decode_value (p, &p), TRUE);
2835 ji->data.token = mono_jump_info_token_new (mp, image, decode_value (p, &p));
2837 ji->data.token->has_context = decode_value (p, &p);
2838 if (ji->data.token->has_context) {
2839 gboolean res = decode_generic_context (aot_module, &ji->data.token->context, p, &p);
2844 case MONO_PATCH_INFO_EXC_NAME:
2845 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2846 if (!ji->data.klass)
2848 ji->data.name = ji->data.klass->name;
2850 case MONO_PATCH_INFO_METHOD_REL:
2851 ji->data.offset = decode_value (p, &p);
2853 case MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG:
2854 case MONO_PATCH_INFO_GENERIC_CLASS_INIT:
2855 case MONO_PATCH_INFO_MONITOR_ENTER:
2856 case MONO_PATCH_INFO_MONITOR_EXIT:
2857 case MONO_PATCH_INFO_GC_CARD_TABLE_ADDR:
2858 case MONO_PATCH_INFO_CASTCLASS_CACHE:
2860 case MONO_PATCH_INFO_RGCTX_FETCH: {
2862 MonoJumpInfoRgctxEntry *entry;
2863 guint32 offset, val;
2866 offset = decode_value (p, &p);
2867 val = decode_value (p, &p);
2869 entry = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
2870 p2 = aot_module->blob + offset;
2871 entry->method = decode_resolve_method_ref (aot_module, p2, &p2);
2872 entry->in_mrgctx = ((val & 1) > 0) ? TRUE : FALSE;
2873 entry->info_type = (val >> 1) & 0xff;
2874 entry->data = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
2875 entry->data->type = (val >> 9) & 0xff;
2877 res = decode_patch (aot_module, mp, entry->data, p, &p);
2880 ji->data.rgctx_entry = entry;
2883 case MONO_PATCH_INFO_SEQ_POINT_INFO:
2885 case MONO_PATCH_INFO_LLVM_IMT_TRAMPOLINE: {
2886 MonoJumpInfoImtTramp *imt_tramp = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoImtTramp));
2888 imt_tramp->method = decode_resolve_method_ref (aot_module, p, &p);
2889 imt_tramp->vt_offset = decode_value (p, &p);
2891 ji->data.imt_tramp = imt_tramp;
2894 case MONO_PATCH_INFO_SIGNATURE:
2895 ji->data.target = decode_signature (aot_module, p, &p);
2898 g_warning ("unhandled type %d", ji->type);
2899 g_assert_not_reached ();
2910 static MonoJumpInfo*
2911 load_patch_info (MonoAotModule *aot_module, MonoMemPool *mp, int n_patches,
2912 guint32 **got_slots,
2913 guint8 *buf, guint8 **endbuf)
2915 MonoJumpInfo *patches;
2921 patches = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo) * n_patches);
2923 *got_slots = g_malloc (sizeof (guint32) * n_patches);
2925 for (pindex = 0; pindex < n_patches; ++pindex) {
2926 MonoJumpInfo *ji = &patches [pindex];
2931 got_offset = decode_value (p, &p);
2933 if (aot_module->got [got_offset]) {
2934 /* Already loaded */
2935 //printf ("HIT!\n");
2937 shared_p = aot_module->blob + mono_aot_get_offset (aot_module->got_info_offsets, got_offset);
2939 ji->type = decode_value (shared_p, &shared_p);
2941 res = decode_patch (aot_module, mp, ji, shared_p, &shared_p);
2946 (*got_slots) [pindex] = got_offset;
2953 g_free (*got_slots);
2960 register_jump_target_got_slot (MonoDomain *domain, MonoMethod *method, gpointer *got_slot)
2963 * Jump addresses cannot be patched by the trampoline code since it
2964 * does not have access to the caller's address. Instead, we collect
2965 * the addresses of the GOT slots pointing to a method, and patch
2966 * them after the method has been compiled.
2968 MonoJitDomainInfo *info = domain_jit_info (domain);
2971 mono_domain_lock (domain);
2972 if (!info->jump_target_got_slot_hash)
2973 info->jump_target_got_slot_hash = g_hash_table_new (NULL, NULL);
2974 list = g_hash_table_lookup (info->jump_target_got_slot_hash, method);
2975 list = g_slist_prepend (list, got_slot);
2976 g_hash_table_insert (info->jump_target_got_slot_hash, method, list);
2977 mono_domain_unlock (domain);
2983 * Load the method identified by METHOD_INDEX from the AOT image. Return a
2984 * pointer to the native code of the method, or NULL if not found.
2985 * METHOD might not be set if the caller only has the image/token info.
2988 load_method (MonoDomain *domain, MonoAotModule *amodule, MonoImage *image, MonoMethod *method, guint32 token, int method_index)
2991 gboolean from_plt = method == NULL;
2993 int i, pindex, n_patches, used_strings;
2994 gboolean keep_patches = TRUE;
2996 MonoJitInfo *jinfo = NULL;
2997 guint8 *code, *info;
2999 if (mono_profiler_get_events () & MONO_PROFILE_ENTER_LEAVE)
3002 if ((domain != mono_get_root_domain ()) && (!(amodule->info.opts & MONO_OPT_SHARED)))
3003 /* Non shared AOT code can't be used in other appdomains */
3006 if (amodule->out_of_date)
3009 if (amodule->code_offsets [method_index] == 0xffffffff) {
3010 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
3014 method = mono_get_method (image, token, NULL);
3015 full_name = mono_method_full_name (method, TRUE);
3016 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.", full_name);
3022 code = &amodule->code [amodule->code_offsets [method_index]];
3024 info = &amodule->blob [mono_aot_get_offset (amodule->method_info_offsets, method_index)];
3026 if (amodule->thumb_end && code < amodule->thumb_end && ((amodule->info.flags & MONO_AOT_FILE_FLAG_DIRECT_METHOD_ADDRESSES) == 0)) {
3027 /* Convert this into a thumb address */
3028 g_assert ((amodule->code_offsets [method_index] & 0x1) == 0);
3029 code = &amodule->code [amodule->code_offsets [method_index] + 1];
3033 if (!amodule->methods_loaded)
3034 amodule->methods_loaded = g_new0 (guint32, amodule->info.nmethods / 32 + 1);
3037 if ((amodule->methods_loaded [method_index / 32] >> (method_index % 32)) & 0x1)
3040 if (mono_last_aot_method != -1) {
3041 if (mono_jit_stats.methods_aot >= mono_last_aot_method)
3043 else if (mono_jit_stats.methods_aot == mono_last_aot_method - 1) {
3045 method = mono_get_method (image, token, NULL);
3047 char *name = mono_method_full_name (method, TRUE);
3048 printf ("LAST AOT METHOD: %s.\n", name);
3051 printf ("LAST AOT METHOD: %p %d\n", code, method_index);
3059 klass = method->klass;
3060 decode_klass_ref (amodule, p, &p);
3062 klass = decode_klass_ref (amodule, p, &p);
3065 if (amodule->info.opts & MONO_OPT_SHARED)
3066 used_strings = decode_value (p, &p);
3070 for (i = 0; i < used_strings; i++) {
3071 guint token = decode_value (p, &p);
3072 mono_ldstr (mono_get_root_domain (), image, mono_metadata_token_index (token));
3075 if (amodule->info.opts & MONO_OPT_SHARED)
3076 keep_patches = FALSE;
3078 n_patches = decode_value (p, &p);
3080 keep_patches = FALSE;
3083 MonoJumpInfo *patches;
3089 mp = mono_mempool_new ();
3091 patches = load_patch_info (amodule, mp, n_patches, &got_slots, p, &p);
3092 if (patches == NULL)
3095 for (pindex = 0; pindex < n_patches; ++pindex) {
3096 MonoJumpInfo *ji = &patches [pindex];
3098 if (!amodule->got [got_slots [pindex]]) {
3099 amodule->got [got_slots [pindex]] = mono_resolve_patch_target (method, domain, code, ji, TRUE);
3100 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
3101 amodule->got [got_slots [pindex]] = mono_create_ftnptr (domain, amodule->got [got_slots [pindex]]);
3102 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
3103 register_jump_target_got_slot (domain, ji->data.method, &(amodule->got [got_slots [pindex]]));
3105 ji->type = MONO_PATCH_INFO_NONE;
3111 mono_mempool_destroy (mp);
3114 if (mini_get_debug_options ()->load_aot_jit_info_eagerly)
3115 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
3117 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
3121 method = mono_get_method (image, token, NULL);
3123 full_name = mono_method_full_name (method, TRUE);
3126 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
3128 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT FOUND method %s [%p - %p %p]", full_name, code, code + jinfo->code_size, info);
3134 InterlockedIncrement (&mono_jit_stats.methods_aot);
3136 amodule->methods_loaded [method_index / 32] |= 1 << (method_index % 32);
3140 if (method && method->wrapper_type)
3141 g_hash_table_insert (amodule->method_to_code, method, code);
3145 if (mono_profiler_get_events () & MONO_PROFILE_JIT_COMPILATION) {
3149 method = mono_get_method (image, token, NULL);
3152 mono_profiler_method_jit (method);
3153 jinfo = mono_jit_info_table_find (domain, (char*)code);
3155 mono_profiler_method_end_jit (method, jinfo, MONO_PROFILE_OK);
3158 if (from_plt && klass && !klass->generic_container)
3159 mono_runtime_class_init (mono_class_vtable (domain, klass));
3164 /* FIXME: The space in domain->mp is wasted */
3165 if (amodule->info.opts & MONO_OPT_SHARED)
3166 /* No need to cache patches */
3167 mono_mempool_destroy (mp);
3176 find_extra_method_in_amodule (MonoAotModule *amodule, MonoMethod *method, const char *name)
3178 guint32 table_size, entry_size, hash;
3179 guint32 *table, *entry;
3181 static guint32 n_extra_decodes;
3183 if (!amodule || amodule->out_of_date)
3186 table_size = amodule->extra_method_table [0];
3187 table = amodule->extra_method_table + 1;
3190 hash = mono_aot_method_hash (method) % table_size;
3192 entry = &table [hash * entry_size];
3199 guint32 key = entry [0];
3200 guint32 value = entry [1];
3201 guint32 next = entry [entry_size - 1];
3205 p = amodule->blob + key;
3209 if (!amodule->method_ref_to_method)
3210 amodule->method_ref_to_method = g_hash_table_new (NULL, NULL);
3211 m = g_hash_table_lookup (amodule->method_ref_to_method, p);
3214 m = decode_resolve_method_ref_with_target (amodule, method, p, &p);
3217 g_hash_table_insert (amodule->method_ref_to_method, orig_p, m);
3226 /* Special case: wrappers of shared generic methods */
3227 if (m && method->wrapper_type && m->wrapper_type == m->wrapper_type &&
3228 method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
3229 MonoMethod *w1 = mono_marshal_method_from_wrapper (method);
3230 MonoMethod *w2 = mono_marshal_method_from_wrapper (m);
3232 if (w1->is_inflated && ((MonoMethodInflated *)w1)->declaring == w2) {
3238 /* Methods decoded needlessly */
3240 //printf ("%d %s %s %p\n", n_extra_decodes, mono_method_full_name (method, TRUE), mono_method_full_name (m, TRUE), orig_p);
3245 entry = &table [next * entry_size];
3254 add_module_cb (gpointer key, gpointer value, gpointer user_data)
3256 g_ptr_array_add ((GPtrArray*)user_data, value);
3260 * find_extra_method:
3262 * Try finding METHOD in the extra_method table in all AOT images.
3263 * Return its method index, or 0xffffff if not found. Set OUT_AMODULE to the AOT
3264 * module where the method was found.
3267 find_extra_method (MonoMethod *method, MonoAotModule **out_amodule)
3274 if (method->wrapper_type)
3275 name = mono_aot_wrapper_name (method);
3277 /* Try the method's module first */
3278 *out_amodule = method->klass->image->aot_module;
3279 index = find_extra_method_in_amodule (method->klass->image->aot_module, method, name);
3280 if (index != 0xffffff) {
3286 * Try all other modules.
3287 * This is needed because generic instances klass->image points to the image
3288 * containing the generic definition, but the native code is generated to the
3289 * AOT image which contains the reference.
3292 /* Make a copy to avoid doing the search inside the aot lock */
3293 modules = g_ptr_array_new ();
3295 g_hash_table_foreach (aot_modules, add_module_cb, modules);
3299 for (i = 0; i < modules->len; ++i) {
3300 MonoAotModule *amodule = g_ptr_array_index (modules, i);
3302 if (amodule != method->klass->image->aot_module)
3303 index = find_extra_method_in_amodule (amodule, method, name);
3304 if (index != 0xffffff) {
3305 *out_amodule = amodule;
3310 g_ptr_array_free (modules, TRUE);
3317 * mono_aot_get_method:
3319 * Return a pointer to the AOTed native code for METHOD if it can be found,
3321 * On platforms with function pointers, this doesn't return a function pointer.
3324 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
3326 MonoClass *klass = method->klass;
3327 guint32 method_index;
3328 MonoAotModule *amodule = klass->image->aot_module;
3334 if (amodule->out_of_date)
3337 if ((method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
3338 (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
3339 (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
3340 (method->flags & METHOD_ATTRIBUTE_ABSTRACT))
3344 * Use the original method instead of its invoke-with-check wrapper.
3345 * This is not a problem when using full-aot, since it doesn't support
3348 if (mono_aot_only && method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)
3349 return mono_aot_get_method (domain, mono_marshal_method_from_wrapper (method));
3351 g_assert (klass->inited);
3353 /* Find method index */
3354 if (method->is_inflated && mono_method_is_generic_sharable_impl_full (method, FALSE, FALSE, FALSE)) {
3356 * For generic methods, we store the fully shared instance in place of the
3359 method = mono_method_get_declaring_generic_method (method);
3360 method_index = mono_metadata_token_index (method->token) - 1;
3361 } else if (method->is_inflated || !method->token) {
3362 /* This hash table is used to avoid the slower search in the extra_method_table in the AOT image */
3364 code = g_hash_table_lookup (amodule->method_to_code, method);
3369 method_index = find_extra_method (method, &amodule);
3371 * Special case the ICollection<T> wrappers for arrays, as they cannot
3372 * be statically enumerated, and each wrapper ends up calling the same
3375 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED && method->klass->rank && strstr (method->name, "System.Collections.Generic")) {
3376 MonoMethod *m = mono_aot_get_array_helper_from_wrapper (method);
3378 code = mono_aot_get_method (domain, m);
3380 if (mono_method_needs_static_rgctx_invoke (m, FALSE)) {
3381 code = mono_create_static_rgctx_trampoline (m, mono_create_ftnptr (domain, code));
3382 /* The call above returns an ftnptr */
3383 code = mono_get_addr_from_ftnptr (code);
3391 * Special case Array.GetGenericValueImpl which is a generic icall.
3392 * Generic sharing currently can't handle it, but the icall returns data using
3393 * an out parameter, so the managed-to-native wrappers can share the same code.
3395 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass == mono_defaults.array_class && !strcmp (method->name, "GetGenericValueImpl")) {
3397 MonoGenericContext ctx;
3398 MonoType *args [16];
3400 if (mono_method_signature (method)->params [1]->type == MONO_TYPE_OBJECT)
3401 /* Avoid recursion */
3404 m = mono_class_get_method_from_name (mono_defaults.array_class, "GetGenericValueImpl", 2);
3407 memset (&ctx, 0, sizeof (ctx));
3408 args [0] = &mono_defaults.object_class->byval_arg;
3409 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
3411 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method (m, &ctx), TRUE, TRUE);
3414 * Get the code for the <object> instantiation which should be emitted into
3415 * the mscorlib aot image by the AOT compiler.
3417 code = mono_aot_get_method (domain, m);
3422 /* Same for CompareExchange<T> and Exchange<T> */
3423 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass->image == mono_defaults.corlib && !strcmp (method->klass->name_space, "System.Threading") && !strcmp (method->klass->name, "Interlocked") && (!strcmp (method->name, "CompareExchange") || !strcmp (method->name, "Exchange")) && MONO_TYPE_IS_REFERENCE (mono_method_signature (method)->params [1])) {
3425 MonoGenericContext ctx;
3426 MonoType *args [16];
3427 gpointer iter = NULL;
3429 while ((m = mono_class_get_methods (method->klass, &iter))) {
3430 if (mono_method_signature (m)->generic_param_count && !strcmp (m->name, method->name))
3435 memset (&ctx, 0, sizeof (ctx));
3436 args [0] = &mono_defaults.object_class->byval_arg;
3437 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
3439 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method (m, &ctx), TRUE, TRUE);
3441 /* Avoid recursion */
3446 * Get the code for the <object> instantiation which should be emitted into
3447 * the mscorlib aot image by the AOT compiler.
3449 code = mono_aot_get_method (domain, m);
3454 if (method_index == 0xffffff && method->is_inflated && mini_is_gsharedvt_sharable_method (method)) {
3456 /* Use the all-vt shared method since this is what was AOTed */
3457 method_index = find_extra_method (mini_get_shared_method_full (method, TRUE, FALSE), &amodule);
3458 if (method_index != 0xffffff)
3459 method = mini_get_shared_method_full (method, TRUE, FALSE);
3462 if (method_index == 0xffffff) {
3463 if (mono_aot_only && mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
3466 full_name = mono_method_full_name (method, TRUE);
3467 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.\n", full_name);
3473 if (method_index == 0xffffff)
3476 /* Needed by find_jit_info */
3478 if (!amodule->extra_methods)
3479 amodule->extra_methods = g_hash_table_new (NULL, NULL);
3480 g_hash_table_insert (amodule->extra_methods, GUINT_TO_POINTER (method_index), method);
3484 method_index = mono_metadata_token_index (method->token) - 1;
3487 return load_method (domain, amodule, klass->image, method, method->token, method_index);
3491 * Same as mono_aot_get_method, but we try to avoid loading any metadata from the
3495 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
3497 MonoAotModule *aot_module = image->aot_module;
3503 method_index = mono_metadata_token_index (token) - 1;
3505 return load_method (domain, aot_module, image, NULL, token, method_index);
3511 } IsGotEntryUserData;
3514 check_is_got_entry (gpointer key, gpointer value, gpointer user_data)
3516 IsGotEntryUserData *data = (IsGotEntryUserData*)user_data;
3517 MonoAotModule *aot_module = (MonoAotModule*)value;
3519 if (aot_module->got && (data->addr >= (guint8*)(aot_module->got)) && (data->addr < (guint8*)(aot_module->got + aot_module->info.got_size)))
3524 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
3526 IsGotEntryUserData user_data;
3531 user_data.addr = addr;
3532 user_data.res = FALSE;
3534 g_hash_table_foreach (aot_modules, check_is_got_entry, &user_data);
3537 return user_data.res;
3542 MonoAotModule *module;
3543 } FindAotModuleUserData;
3546 find_aot_module_cb (gpointer key, gpointer value, gpointer user_data)
3548 FindAotModuleUserData *data = (FindAotModuleUserData*)user_data;
3549 MonoAotModule *aot_module = (MonoAotModule*)value;
3551 if ((data->addr >= (guint8*)(aot_module->code)) && (data->addr < (guint8*)(aot_module->code_end)))
3552 data->module = aot_module;
3555 static inline MonoAotModule*
3556 find_aot_module (guint8 *code)
3558 FindAotModuleUserData user_data;
3563 /* Reading these need no locking */
3564 if (((gsize)code < aot_code_low_addr) || ((gsize)code > aot_code_high_addr))
3567 user_data.addr = code;
3568 user_data.module = NULL;
3571 g_hash_table_foreach (aot_modules, find_aot_module_cb, &user_data);
3574 return user_data.module;
3578 mono_aot_patch_plt_entry (guint8 *code, gpointer *got, mgreg_t *regs, guint8 *addr)
3581 * Since AOT code is only used in the root domain,
3582 * mono_domain_get () != mono_get_root_domain () means the calling method
3583 * is AppDomain:InvokeInDomain, so this is the same check as in
3584 * mono_method_same_domain () but without loading the metadata for the method.
3586 if (mono_domain_get () == mono_get_root_domain ())
3587 mono_arch_patch_plt_entry (code, got, regs, addr);
3591 * mono_aot_plt_resolve:
3593 * This function is called by the entries in the PLT to resolve the actual method that
3594 * needs to be called. It returns a trampoline to the method and patches the PLT entry.
3595 * Returns NULL if the something cannot be loaded.
3598 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
3600 #ifdef MONO_ARCH_AOT_SUPPORTED
3601 guint8 *p, *target, *plt_entry;
3603 MonoAotModule *module = (MonoAotModule*)aot_module;
3604 gboolean res, no_ftnptr = FALSE;
3607 //printf ("DYN: %p %d\n", aot_module, plt_info_offset);
3609 p = &module->blob [plt_info_offset];
3611 ji.type = decode_value (p, &p);
3613 mp = mono_mempool_new_size (512);
3614 res = decode_patch (module, mp, &ji, p, &p);
3617 mono_mempool_destroy (mp);
3622 * Avoid calling resolve_patch_target in the full-aot case if possible, since
3623 * it would create a trampoline, and we don't need that.
3624 * We could do this only if the method does not need the special handling
3625 * in mono_magic_trampoline ().
3627 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) &&
3628 !mono_method_needs_static_rgctx_invoke (ji.data.method, FALSE)) {
3629 target = mono_jit_compile_method (ji.data.method);
3632 target = mono_resolve_patch_target (NULL, mono_domain_get (), NULL, &ji, TRUE);
3636 * The trampoline expects us to return a function descriptor on platforms which use
3637 * it, but resolve_patch_target returns a direct function pointer for some type of
3638 * patches, so have to translate between the two.
3639 * FIXME: Clean this up, but how ?
3641 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) {
3642 /* These should already have a function descriptor */
3643 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3644 /* Our function descriptors have a 0 environment, gcc created ones don't */
3645 if (ji.type != MONO_PATCH_INFO_INTERNAL_METHOD && ji.type != MONO_PATCH_INFO_JIT_ICALL_ADDR && ji.type != MONO_PATCH_INFO_ICALL_ADDR)
3646 g_assert (((gpointer*)target) [2] == 0);
3649 } else if (!no_ftnptr) {
3650 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3651 g_assert (((gpointer*)target) [2] != 0);
3653 target = mono_create_ftnptr (mono_domain_get (), target);
3656 mono_mempool_destroy (mp);
3658 /* Patch the PLT entry with target which might be the actual method not a trampoline */
3659 plt_entry = mono_aot_get_plt_entry (code);
3660 g_assert (plt_entry);
3661 mono_aot_patch_plt_entry (plt_entry, module->got, NULL, target);
3665 g_assert_not_reached ();
3673 * Initialize the PLT table of the AOT module. Called lazily when the first AOT
3674 * method in the module is loaded to avoid committing memory by writing to it.
3675 * LOCKING: Assumes the AOT lock is held.
3678 init_plt (MonoAotModule *amodule)
3683 if (amodule->plt_inited)
3686 tramp = mono_create_specific_trampoline (amodule, MONO_TRAMPOLINE_AOT_PLT, mono_get_root_domain (), NULL);
3689 * Initialize the PLT entries in the GOT to point to the default targets.
3692 tramp = mono_create_ftnptr (mono_domain_get (), tramp);
3693 for (i = 1; i < amodule->info.plt_size; ++i)
3694 /* All the default entries point to the AOT trampoline */
3695 ((gpointer*)amodule->got)[amodule->info.plt_got_offset_base + i] = tramp;
3697 amodule->plt_inited = TRUE;
3701 * mono_aot_get_plt_entry:
3703 * Return the address of the PLT entry called by the code at CODE if exists.
3706 mono_aot_get_plt_entry (guint8 *code)
3708 MonoAotModule *amodule = find_aot_module (code);
3709 guint8 *target = NULL;
3715 if (amodule->thumb_end && code < amodule->thumb_end) {
3716 return mono_arm_get_thumb_plt_entry (code);
3720 #ifdef MONO_ARCH_AOT_SUPPORTED
3721 target = mono_arch_get_call_target (code);
3723 g_assert_not_reached ();
3727 while (target != NULL) {
3728 if ((target >= (guint8*)(amodule->plt)) && (target < (guint8*)(amodule->plt_end)))
3731 // Add 4 since mono_arch_get_call_target assumes we're passing
3732 // the instruction after the actual branch instruction.
3733 target = mono_arch_get_call_target (target + 4);
3738 if ((target >= (guint8*)(amodule->plt)) && (target < (guint8*)(amodule->plt_end)))
3746 * mono_aot_get_plt_info_offset:
3748 * Return the PLT info offset belonging to the plt entry called by CODE.
3751 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
3753 guint8 *plt_entry = mono_aot_get_plt_entry (code);
3755 g_assert (plt_entry);
3757 /* The offset is embedded inside the code after the plt entry */
3758 #ifdef MONO_ARCH_AOT_SUPPORTED
3759 return mono_arch_get_plt_info_offset (plt_entry, regs, code);
3761 g_assert_not_reached ();
3767 mono_create_ftnptr_malloc (guint8 *code)
3769 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3770 MonoPPCFunctionDescriptor *ftnptr = g_malloc0 (sizeof (MonoPPCFunctionDescriptor));
3772 ftnptr->code = code;
3783 * mono_aot_register_jit_icall:
3785 * Register a JIT icall which is called by trampolines in full-aot mode. This should
3786 * be called from mono_arch_init () during startup.
3789 mono_aot_register_jit_icall (const char *name, gpointer addr)
3791 /* No need for locking */
3792 if (!aot_jit_icall_hash)
3793 aot_jit_icall_hash = g_hash_table_new (g_str_hash, g_str_equal);
3794 g_hash_table_insert (aot_jit_icall_hash, (char*)name, addr);
3800 * Load the function named NAME from the aot image.
3803 load_function (MonoAotModule *amodule, const char *name)
3807 int n_patches, pindex;
3813 symbol = g_strdup_printf ("%s", name);
3814 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&code);
3817 g_error ("Symbol '%s' not found in AOT file '%s'.\n", name, amodule->aot_name);
3819 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT FOUND function '%s' in AOT file '%s'.", name, amodule->aot_name);
3823 symbol = g_strdup_printf ("%s_p", name);
3824 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&p);
3827 /* Nothing to patch */
3830 p = amodule->blob + *(guint32*)p;
3832 /* Similar to mono_aot_load_method () */
3834 n_patches = decode_value (p, &p);
3837 MonoJumpInfo *patches;
3840 mp = mono_mempool_new ();
3842 patches = load_patch_info (amodule, mp, n_patches, &got_slots, p, &p);
3845 for (pindex = 0; pindex < n_patches; ++pindex) {
3846 MonoJumpInfo *ji = &patches [pindex];
3849 if (amodule->got [got_slots [pindex]])
3853 * When this code is executed, the runtime may not be initalized yet, so
3854 * resolve the patch info by hand.
3856 if (ji->type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
3857 if (!strcmp (ji->data.name, "mono_get_lmf_addr")) {
3858 target = mono_get_lmf_addr;
3859 } else if (!strcmp (ji->data.name, "mono_thread_force_interruption_checkpoint")) {
3860 target = mono_thread_force_interruption_checkpoint;
3861 } else if (!strcmp (ji->data.name, "mono_exception_from_token")) {
3862 target = mono_exception_from_token;
3863 } else if (!strcmp (ji->data.name, "mono_throw_exception")) {
3864 target = mono_get_throw_exception ();
3865 } else if (strstr (ji->data.name, "trampoline_func_") == ji->data.name) {
3866 int tramp_type2 = atoi (ji->data.name + strlen ("trampoline_func_"));
3867 target = (gpointer)mono_get_trampoline_func (tramp_type2);
3868 } else if (strstr (ji->data.name, "specific_trampoline_lazy_fetch_") == ji->data.name) {
3869 /* atoll is needed because the the offset is unsigned */
3873 res = sscanf (ji->data.name, "specific_trampoline_lazy_fetch_%u", &slot);
3874 g_assert (res == 1);
3875 target = mono_create_specific_trampoline (GUINT_TO_POINTER (slot), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, mono_get_root_domain (), NULL);
3876 target = mono_create_ftnptr_malloc (target);
3877 } else if (!strcmp (ji->data.name, "specific_trampoline_monitor_enter")) {
3878 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_MONITOR_ENTER, mono_get_root_domain (), NULL);
3879 target = mono_create_ftnptr_malloc (target);
3880 } else if (!strcmp (ji->data.name, "specific_trampoline_monitor_exit")) {
3881 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_MONITOR_EXIT, mono_get_root_domain (), NULL);
3882 target = mono_create_ftnptr_malloc (target);
3883 } else if (!strcmp (ji->data.name, "specific_trampoline_generic_class_init")) {
3884 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_GENERIC_CLASS_INIT, mono_get_root_domain (), NULL);
3885 target = mono_create_ftnptr_malloc (target);
3886 } else if (!strcmp (ji->data.name, "mono_thread_get_and_clear_pending_exception")) {
3887 target = mono_thread_get_and_clear_pending_exception;
3888 } else if (strstr (ji->data.name, "generic_trampoline_")) {
3889 target = mono_aot_get_trampoline (ji->data.name);
3890 } else if (aot_jit_icall_hash && g_hash_table_lookup (aot_jit_icall_hash, ji->data.name)) {
3891 /* Registered by mono_arch_init () */
3892 target = g_hash_table_lookup (aot_jit_icall_hash, ji->data.name);
3894 fprintf (stderr, "Unknown relocation '%s'\n", ji->data.name);
3895 g_assert_not_reached ();
3899 /* Hopefully the code doesn't have patches which need method or
3902 target = mono_resolve_patch_target (NULL, NULL, code, ji, FALSE);
3906 amodule->got [got_slots [pindex]] = target;
3911 mono_mempool_destroy (mp);
3918 * Return the trampoline identified by NAME from the mscorlib AOT file.
3919 * On ppc64, this returns a function descriptor.
3922 mono_aot_get_trampoline (const char *name)
3925 MonoAotModule *amodule;
3927 image = mono_defaults.corlib;
3930 amodule = image->aot_module;
3933 return mono_create_ftnptr_malloc (load_function (amodule, name));
3937 #include <mach/mach.h>
3939 static TrampolinePage* trampoline_pages [MONO_AOT_TRAMP_NUM];
3940 /* these sizes are for ARM code, parametrize if porting to other architectures (see arch_emit_specific_trampoline_pages)
3941 * trampoline size is assumed to be 8 bytes below as well (8 is the minimum for 32 bit archs, since we need to store
3942 * two pointers for trampoline in the data page).
3943 * the minimum for the common code must be at least sizeof(TrampolinePage), since we store the page info at the
3944 * beginning of the data page.
3946 static const int trampolines_pages_code_offsets [MONO_AOT_TRAMP_NUM] = {16, 16, 72};
3948 static unsigned char*
3949 get_new_trampoline_from_page (int tramp_type)
3951 MonoAotModule *amodule;
3953 TrampolinePage *page;
3956 vm_address_t addr, taddr;
3958 vm_prot_t prot, max_prot;
3960 unsigned char *code;
3962 mono_aot_page_lock ();
3963 page = trampoline_pages [tramp_type];
3964 if (page && page->trampolines < page->trampolines_end) {
3965 code = page->trampolines;
3966 page->trampolines += 8;
3967 mono_aot_page_unlock ();
3970 mono_aot_page_unlock ();
3971 psize = mono_pagesize ();
3972 /* the trampoline template page is in the mscorlib module */
3973 image = mono_defaults.corlib;
3976 amodule = image->aot_module;
3979 if (tramp_type == MONO_AOT_TRAMP_SPECIFIC)
3980 tpage = load_function (amodule, "specific_trampolines_page");
3981 else if (tramp_type == MONO_AOT_TRAMP_STATIC_RGCTX)
3982 tpage = load_function (amodule, "rgctx_trampolines_page");
3983 else if (tramp_type == MONO_AOT_TRAMP_IMT_THUNK)
3984 tpage = load_function (amodule, "imt_trampolines_page");
3986 g_error ("Incorrect tramp type for trampolines page");
3988 /*g_warning ("loaded trampolines page at %x", tpage);*/
3990 /* avoid the unlikely case of looping forever */
3993 while (page == NULL && count-- > 0) {
3995 /* allocate two contiguous pages of memory: the first page will contain the data (like a local constant pool)
3996 * while the second will contain the trampolines.
3998 ret = vm_allocate (mach_task_self (), &addr, psize * 2, VM_FLAGS_ANYWHERE);
3999 if (ret != KERN_SUCCESS) {
4000 g_error ("Cannot allocate memory for trampolines: %d", ret);
4003 /*g_warning ("allocated trampoline double page at %x", addr);*/
4004 /* replace the second page with a remapped trampoline page */
4005 taddr = addr + psize;
4006 vm_deallocate (mach_task_self (), taddr, psize);
4007 ret = vm_remap (mach_task_self (), &taddr, psize, 0, FALSE, mach_task_self(), (vm_address_t)tpage, FALSE, &prot, &max_prot, VM_INHERIT_SHARE);
4008 if (ret != KERN_SUCCESS) {
4009 /* someone else got the page, try again */
4010 vm_deallocate (mach_task_self (), addr, psize);
4013 /*g_warning ("remapped trampoline page at %x", taddr);*/
4015 mono_aot_page_lock ();
4016 page = trampoline_pages [tramp_type];
4017 /* some other thread already allocated, so use that to avoid wasting memory */
4018 if (page && page->trampolines < page->trampolines_end) {
4019 code = page->trampolines;
4020 page->trampolines += 8;
4021 mono_aot_page_unlock ();
4022 vm_deallocate (mach_task_self (), addr, psize);
4023 vm_deallocate (mach_task_self (), taddr, psize);
4026 page = (TrampolinePage*)addr;
4027 page->next = trampoline_pages [tramp_type];
4028 trampoline_pages [tramp_type] = page;
4029 page->trampolines = (void*)(taddr + trampolines_pages_code_offsets [tramp_type]);
4030 page->trampolines_end = (void*)(taddr + psize);
4031 code = page->trampolines;
4032 page->trampolines += 8;
4033 mono_aot_page_unlock ();
4036 g_error ("Cannot allocate more trampoline pages: %d", ret);
4041 static unsigned char*
4042 get_new_trampoline_from_page (int tramp_type)
4044 g_error ("Page trampolines not supported.");
4051 get_new_specific_trampoline_from_page (gpointer tramp, gpointer arg)
4056 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_SPECIFIC);
4058 data = (gpointer*)((char*)code - mono_pagesize ());
4061 /*g_warning ("new trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
4067 get_new_rgctx_trampoline_from_page (gpointer tramp, gpointer arg)
4072 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_STATIC_RGCTX);
4074 data = (gpointer*)((char*)code - mono_pagesize ());
4077 /*g_warning ("new rgctx trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
4083 get_new_imt_trampoline_from_page (gpointer arg)
4088 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_IMT_THUNK);
4090 data = (gpointer*)((char*)code - mono_pagesize ());
4092 /*g_warning ("new imt trampoline at %p for data %p, (stored at %p)", code, arg, data);*/
4097 /* Return a given kind of trampoline */
4099 get_numerous_trampoline (MonoAotTrampoline tramp_type, int n_got_slots, MonoAotModule **out_amodule, guint32 *got_offset, guint32 *out_tramp_size)
4101 MonoAotModule *amodule;
4102 int index, tramp_size;
4105 /* Currently, we keep all trampolines in the mscorlib AOT image */
4106 image = mono_defaults.corlib;
4111 amodule = image->aot_module;
4114 *out_amodule = amodule;
4117 #define MONOTOUCH_TRAMPOLINES_ERROR ". See http://docs.xamarin.com/ios/troubleshooting for instruction on how to fix this condition"
4119 #define MONOTOUCH_TRAMPOLINES_ERROR ""
4121 if (amodule->trampoline_index [tramp_type] == amodule->info.num_trampolines [tramp_type]) {
4122 g_error ("Ran out of trampolines of type %d in '%s' (%d)%s\n",
4123 tramp_type, image->name, amodule->info.num_trampolines [tramp_type], MONOTOUCH_TRAMPOLINES_ERROR);
4125 index = amodule->trampoline_index [tramp_type] ++;
4129 *got_offset = amodule->info.trampoline_got_offset_base [tramp_type] + (index * n_got_slots);
4131 tramp_size = amodule->info.trampoline_size [tramp_type];
4134 *out_tramp_size = tramp_size;
4136 return amodule->trampolines [tramp_type] + (index * tramp_size);
4140 * Return a specific trampoline from the AOT file.
4143 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
4145 MonoAotModule *amodule;
4146 guint32 got_offset, tramp_size;
4147 guint8 *code, *tramp;
4148 static gpointer generic_trampolines [MONO_TRAMPOLINE_NUM];
4149 static gboolean inited;
4150 static guint32 num_trampolines;
4156 mono_counters_register ("Specific trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &num_trampolines);
4165 if (!generic_trampolines [tramp_type]) {
4168 symbol = mono_get_generic_trampoline_name (tramp_type);
4169 generic_trampolines [tramp_type] = mono_aot_get_trampoline (symbol);
4173 tramp = generic_trampolines [tramp_type];
4176 if (USE_PAGE_TRAMPOLINES) {
4177 code = get_new_specific_trampoline_from_page (tramp, arg1);
4180 code = get_numerous_trampoline (MONO_AOT_TRAMP_SPECIFIC, 2, &amodule, &got_offset, &tramp_size);
4182 amodule->got [got_offset] = tramp;
4183 amodule->got [got_offset + 1] = arg1;
4187 *code_len = tramp_size;
4193 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
4195 MonoAotModule *amodule;
4199 if (USE_PAGE_TRAMPOLINES) {
4200 code = get_new_rgctx_trampoline_from_page (addr, ctx);
4202 code = get_numerous_trampoline (MONO_AOT_TRAMP_STATIC_RGCTX, 2, &amodule, &got_offset, NULL);
4204 amodule->got [got_offset] = ctx;
4205 amodule->got [got_offset + 1] = addr;
4208 /* The caller expects an ftnptr */
4209 return mono_create_ftnptr (mono_domain_get (), code);
4213 mono_aot_get_unbox_trampoline (MonoMethod *method)
4215 guint32 method_index = mono_metadata_token_index (method->token) - 1;
4216 MonoAotModule *amodule;
4218 guint32 *ut, *ut_end, *entry;
4219 int low, high, entry_index;
4221 if (method->is_inflated && !mono_method_is_generic_sharable_impl_full (method, FALSE, FALSE, FALSE)) {
4222 method_index = find_extra_method (method, &amodule);
4223 g_assert (method_index != 0xffffff);
4225 amodule = method->klass->image->aot_module;
4229 ut = amodule->unbox_trampolines;
4230 ut_end = amodule->unbox_trampolines_end;
4232 /* Do a binary search in the sorted table */
4235 high = (ut_end - ut) / 2;
4236 while (low < high) {
4237 entry_index = (low + high) / 2;
4238 entry = &ut [(entry_index * 2)];
4239 if (entry [0] < method_index) {
4240 low = entry_index + 1;
4241 } else if (entry [0] > method_index) {
4244 code = amodule->code + entry [1];
4250 /* The caller expects an ftnptr */
4251 return mono_create_ftnptr (mono_domain_get (), code);
4255 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
4260 symbol = mono_get_rgctx_fetch_trampoline_name (slot);
4261 code = load_function (mono_defaults.corlib->aot_module, symbol);
4263 /* The caller expects an ftnptr */
4264 return mono_create_ftnptr (mono_domain_get (), code);
4268 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
4273 int i, index, real_count;
4274 MonoAotModule *amodule;
4277 for (i = 0; i < count; ++i) {
4278 MonoIMTCheckItem *item = imt_entries [i];
4280 if (item->is_equals)
4284 /* Save the entries into an array */
4285 buf = mono_domain_alloc (domain, (real_count + 1) * 2 * sizeof (gpointer));
4287 for (i = 0; i < count; ++i) {
4288 MonoIMTCheckItem *item = imt_entries [i];
4290 if (!item->is_equals)
4293 g_assert (item->key);
4295 buf [(index * 2)] = item->key;
4296 if (item->has_target_code) {
4297 gpointer *p = mono_domain_alloc (domain, sizeof (gpointer));
4298 *p = item->value.target_code;
4299 buf [(index * 2) + 1] = p;
4301 buf [(index * 2) + 1] = &(vtable->vtable [item->value.vtable_slot]);
4305 buf [(index * 2)] = NULL;
4306 buf [(index * 2) + 1] = fail_tramp;
4308 if (USE_PAGE_TRAMPOLINES) {
4309 code = get_new_imt_trampoline_from_page (buf);
4311 code = get_numerous_trampoline (MONO_AOT_TRAMP_IMT_THUNK, 1, &amodule, &got_offset, NULL);
4313 amodule->got [got_offset] = buf;
4320 mono_aot_get_gsharedvt_arg_trampoline (gpointer arg, gpointer addr)
4322 MonoAotModule *amodule;
4326 code = get_numerous_trampoline (MONO_AOT_TRAMP_GSHAREDVT_ARG, 2, &amodule, &got_offset, NULL);
4328 amodule->got [got_offset] = arg;
4329 amodule->got [got_offset + 1] = addr;
4331 /* The caller expects an ftnptr */
4332 return mono_create_ftnptr (mono_domain_get (), code);
4336 * mono_aot_set_make_unreadable:
4338 * Set whenever to make all mmaped memory unreadable. In conjuction with a
4339 * SIGSEGV handler, this is useful to find out which pages the runtime tries to read.
4342 mono_aot_set_make_unreadable (gboolean unreadable)
4346 make_unreadable = unreadable;
4348 if (make_unreadable && !inited) {
4349 mono_counters_register ("AOT pagefaults", MONO_COUNTER_JIT | MONO_COUNTER_INT, &n_pagefaults);
4354 MonoAotModule *module;
4359 find_map (gpointer key, gpointer value, gpointer user_data)
4361 MonoAotModule *module = (MonoAotModule*)value;
4362 FindMapUserData *data = (FindMapUserData*)user_data;
4365 if ((data->ptr >= module->mem_begin) && (data->ptr < module->mem_end))
4366 data->module = module;
4369 static MonoAotModule*
4370 find_module_for_addr (void *ptr)
4372 FindMapUserData data;
4374 if (!make_unreadable)
4378 data.ptr = (guint8*)ptr;
4381 g_hash_table_foreach (aot_modules, (GHFunc)find_map, &data);
4388 * mono_aot_is_pagefault:
4390 * Should be called from a SIGSEGV signal handler to find out whenever @ptr is
4391 * within memory allocated by this module.
4394 mono_aot_is_pagefault (void *ptr)
4396 if (!make_unreadable)
4400 * Not signal safe, but SIGSEGV's are synchronous, and
4401 * this is only turned on by a MONO_DEBUG option.
4403 return find_module_for_addr (ptr) != NULL;
4407 * mono_aot_handle_pagefault:
4409 * Handle a pagefault caused by an unreadable page by making it readable again.
4412 mono_aot_handle_pagefault (void *ptr)
4414 #ifndef PLATFORM_WIN32
4415 guint8* start = (guint8*)ROUND_DOWN (((gssize)ptr), mono_pagesize ());
4419 res = mono_mprotect (start, mono_pagesize (), MONO_MMAP_READ|MONO_MMAP_WRITE|MONO_MMAP_EXEC);
4420 g_assert (res == 0);
4431 mono_aot_init (void)
4436 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
4442 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
4448 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
4454 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
4460 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
4466 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
4472 mono_aot_get_plt_entry (guint8 *code)
4478 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
4484 mono_aot_patch_plt_entry (guint8 *code, gpointer *got, mgreg_t *regs, guint8 *addr)
4489 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
4495 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
4497 g_assert_not_reached ();
4503 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
4505 g_assert_not_reached ();
4510 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
4512 g_assert_not_reached ();
4517 mono_aot_get_trampoline (const char *name)
4519 g_assert_not_reached ();
4524 mono_aot_get_unbox_trampoline (MonoMethod *method)
4526 g_assert_not_reached ();
4531 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
4533 g_assert_not_reached ();
4538 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
4540 g_assert_not_reached ();
4545 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
4547 g_assert_not_reached ();
4552 mono_aot_register_jit_icall (const char *name, gpointer addr)