2 * aot-runtime.c: mono Ahead of Time compiler
5 * Dietmar Maurer (dietmar@ximian.com)
6 * Zoltan Varga (vargaz@gmail.com)
8 * (C) 2002 Ximian, Inc.
9 * Copyright 2003-2011 Novell, Inc.
10 * Copyright 2011 Xamarin, Inc.
14 #include <sys/types.h>
20 #ifdef HAVE_SYS_MMAN_H
29 #ifdef HAVE_EXECINFO_H
36 #ifdef HAVE_SYS_WAIT_H
37 #include <sys/wait.h> /* for WIFEXITED, WEXITSTATUS */
40 #include <mono/metadata/tabledefs.h>
41 #include <mono/metadata/class.h>
42 #include <mono/metadata/object.h>
43 #include <mono/metadata/tokentype.h>
44 #include <mono/metadata/appdomain.h>
45 #include <mono/metadata/debug-helpers.h>
46 #include <mono/metadata/assembly.h>
47 #include <mono/metadata/metadata-internals.h>
48 #include <mono/metadata/marshal.h>
49 #include <mono/metadata/gc-internal.h>
50 #include <mono/metadata/monitor.h>
51 #include <mono/metadata/threads-types.h>
52 #include <mono/metadata/mono-endian.h>
53 #include <mono/utils/mono-logger-internal.h>
54 #include <mono/utils/mono-mmap.h>
55 #include "mono/utils/mono-compiler.h"
56 #include <mono/utils/mono-counters.h>
64 #define SHARED_EXT ".dll"
65 #elif ((defined(__ppc__) || defined(__powerpc__) || defined(__ppc64__)) || defined(__MACH__)) && !defined(__linux__)
66 #define SHARED_EXT ".dylib"
67 #elif defined(__APPLE__) && defined(TARGET_X86) && !defined(__native_client_codegen__)
68 #define SHARED_EXT ".dylib"
70 #define SHARED_EXT ".so"
73 #define ALIGN_PTR_TO(ptr,align) (gpointer)((((gssize)(ptr)) + (align - 1)) & (~(align - 1)))
74 #define ROUND_DOWN(VALUE,SIZE) ((VALUE) & ~((SIZE) - 1))
76 typedef struct MonoAotModule {
78 /* Pointer to the Global Offset Table */
80 GHashTable *name_cache;
81 GHashTable *extra_methods;
82 /* Maps methods to their code */
83 GHashTable *method_to_code;
84 /* Maps pointers into the method info to the methods themselves */
85 GHashTable *method_ref_to_method;
86 MonoAssemblyName *image_names;
88 MonoAssembly *assembly;
89 MonoImage **image_table;
90 guint32 image_table_len;
100 gint32 *code_offsets;
102 gpointer *method_addresses;
104 /* This contains <offset, index> pairs sorted by offset */
105 /* This is needed because LLVM emitted methods can be in any order */
106 gint32 *sorted_code_offsets;
107 gint32 sorted_code_offsets_len;
108 guint32 *method_info_offsets;
109 guint32 *got_info_offsets;
110 guint32 *ex_info_offsets;
111 guint32 *class_info_offsets;
112 guint32 *methods_loaded;
113 guint16 *class_name_table;
114 guint32 *extra_method_table;
115 guint32 *extra_method_info_offsets;
116 guint32 *unbox_trampolines;
117 guint32 *unbox_trampolines_end;
121 /* Points to the mono EH data created by LLVM */
122 guint8 *mono_eh_frame;
124 /* Points to the trampolines */
125 guint8 *trampolines [MONO_AOT_TRAMP_NUM];
126 /* The first unused trampoline of each kind */
127 guint32 trampoline_index [MONO_AOT_TRAMP_NUM];
129 gboolean use_page_trampolines;
131 MonoAotFileInfo info;
139 unsigned char *trampolines;
140 unsigned char *trampolines_end;
143 static GHashTable *aot_modules;
144 #define mono_aot_lock() EnterCriticalSection (&aot_mutex)
145 #define mono_aot_unlock() LeaveCriticalSection (&aot_mutex)
146 static CRITICAL_SECTION aot_mutex;
149 * Maps assembly names to the mono_aot_module_<NAME>_info symbols in the
150 * AOT modules registered by mono_aot_register_module ().
152 static GHashTable *static_aot_modules;
155 * Maps MonoJitInfo* to the aot module they belong to, this can be different
156 * from ji->method->klass->image's aot module for generic instances.
158 static GHashTable *ji_to_amodule;
161 * Whenever to AOT compile loaded assemblies on demand and store them in
162 * a cache under $HOME/.mono/aot-cache.
164 static gboolean use_aot_cache = FALSE;
167 * Whenever to spawn a new process to AOT a file or do it in-process. Only relevant if
168 * use_aot_cache is TRUE.
170 static gboolean spawn_compiler = TRUE;
173 static gint32 mono_last_aot_method = -1;
175 static gboolean make_unreadable = FALSE;
176 static guint32 name_table_accesses = 0;
177 static guint32 n_pagefaults = 0;
179 /* Used to speed-up find_aot_module () */
180 static gsize aot_code_low_addr = (gssize)-1;
181 static gsize aot_code_high_addr = 0;
183 static GHashTable *aot_jit_icall_hash;
186 #define USE_PAGE_TRAMPOLINES ((MonoAotModule*)mono_defaults.corlib->aot_module)->use_page_trampolines
188 #define USE_PAGE_TRAMPOLINES 0
191 #define mono_aot_page_lock() EnterCriticalSection (&aot_page_mutex)
192 #define mono_aot_page_unlock() LeaveCriticalSection (&aot_page_mutex)
193 static CRITICAL_SECTION aot_page_mutex;
196 init_plt (MonoAotModule *info);
198 /*****************************************************/
200 /*****************************************************/
205 * Load one of the images referenced by AMODULE. Returns NULL if the image is not
206 * found, and sets the loader error if SET_ERROR is TRUE.
209 load_image (MonoAotModule *amodule, int index, gboolean set_error)
211 MonoAssembly *assembly;
212 MonoImageOpenStatus status;
214 g_assert (index < amodule->image_table_len);
216 if (amodule->image_table [index])
217 return amodule->image_table [index];
218 if (amodule->out_of_date)
221 assembly = mono_assembly_load (&amodule->image_names [index], amodule->assembly->basedir, &status);
223 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is unusable because dependency %s is not found.\n", amodule->aot_name, amodule->image_names [index].name);
224 amodule->out_of_date = TRUE;
227 char *full_name = mono_stringify_assembly_name (&amodule->image_names [index]);
228 mono_loader_set_error_assembly_load (full_name, FALSE);
234 if (strcmp (assembly->image->guid, amodule->image_guids [index])) {
235 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is unusable (GUID of dependent assembly %s doesn't match (expected '%s', got '%s').\n", amodule->aot_name, amodule->image_names [index].name, amodule->image_guids [index], assembly->image->guid);
236 amodule->out_of_date = TRUE;
240 amodule->image_table [index] = assembly->image;
241 return assembly->image;
245 decode_value (guint8 *ptr, guint8 **rptr)
250 if ((b & 0x80) == 0){
253 } else if ((b & 0x40) == 0){
254 len = ((b & 0x3f) << 8 | ptr [1]);
256 } else if (b != 0xff) {
257 len = ((b & 0x1f) << 24) |
264 len = (ptr [1] << 24) | (ptr [2] << 16) | (ptr [3] << 8) | ptr [4];
270 //printf ("DECODE: %d.\n", len);
275 * mono_aot_get_offset:
277 * Decode an offset table emitted by emit_offset_table (), returning the INDEXth
281 mono_aot_get_offset (guint32 *table, int index)
283 int i, group, ngroups, index_entry_size;
284 int start_offset, offset, noffsets, group_size;
285 guint8 *data_start, *p;
286 guint32 *index32 = NULL;
287 guint16 *index16 = NULL;
289 noffsets = table [0];
290 group_size = table [1];
292 index_entry_size = table [3];
293 group = index / group_size;
295 if (index_entry_size == 2) {
296 index16 = (guint16*)&table [4];
297 data_start = (guint8*)&index16 [ngroups];
298 p = data_start + index16 [group];
300 index32 = (guint32*)&table [4];
301 data_start = (guint8*)&index32 [ngroups];
302 p = data_start + index32 [group];
305 /* offset will contain the value of offsets [group * group_size] */
306 offset = start_offset = decode_value (p, &p);
307 for (i = group * group_size + 1; i <= index; ++i) {
308 offset += decode_value (p, &p);
311 //printf ("Offset lookup: %d -> %d, start=%d, p=%d\n", index, offset, start_offset, table [3 + group]);
317 decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf);
320 decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf);
323 decode_type (MonoAotModule *module, guint8 *buf, guint8 **endbuf);
325 static MonoGenericInst*
326 decode_generic_inst (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
329 MonoType **type_argv;
330 MonoGenericInst *inst;
333 type_argc = decode_value (p, &p);
334 type_argv = g_new0 (MonoType*, type_argc);
336 for (i = 0; i < type_argc; ++i) {
337 MonoClass *pclass = decode_klass_ref (module, p, &p);
342 type_argv [i] = &pclass->byval_arg;
345 inst = mono_metadata_get_generic_inst (type_argc, type_argv);
354 decode_generic_context (MonoAotModule *module, MonoGenericContext *ctx, guint8 *buf, guint8 **endbuf)
361 argc = decode_value (p, &p);
364 ctx->class_inst = decode_generic_inst (module, p, &p);
365 if (!ctx->class_inst)
369 argc = decode_value (p, &p);
372 ctx->method_inst = decode_generic_inst (module, p, &p);
373 if (!ctx->method_inst)
382 decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
385 MonoClass *klass = NULL, *eklass;
386 guint32 token, rank, idx;
390 reftype = decode_value (p, &p);
397 case MONO_AOT_TYPEREF_TYPEDEF_INDEX:
398 idx = decode_value (p, &p);
399 image = load_image (module, 0, TRUE);
402 klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF + idx);
404 case MONO_AOT_TYPEREF_TYPEDEF_INDEX_IMAGE:
405 idx = decode_value (p, &p);
406 image = load_image (module, decode_value (p, &p), TRUE);
409 klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF + idx);
411 case MONO_AOT_TYPEREF_TYPESPEC_TOKEN:
412 token = decode_value (p, &p);
413 image = module->assembly->image;
416 klass = mono_class_get (image, token);
418 case MONO_AOT_TYPEREF_GINST: {
420 MonoGenericContext ctx;
423 gclass = decode_klass_ref (module, p, &p);
426 g_assert (gclass->generic_container);
428 memset (&ctx, 0, sizeof (ctx));
429 ctx.class_inst = decode_generic_inst (module, p, &p);
432 type = mono_class_inflate_generic_type (&gclass->byval_arg, &ctx);
433 klass = mono_class_from_mono_type (type);
434 mono_metadata_free_type (type);
437 case MONO_AOT_TYPEREF_VAR: {
439 MonoGenericContainer *container = NULL;
440 int type = decode_value (p, &p);
441 int num = decode_value (p, &p);
442 gboolean has_container = decode_value (p, &p);
446 gboolean is_method = decode_value (p, &p);
449 MonoMethod *method_def;
450 g_assert (type == MONO_TYPE_MVAR);
451 method_def = decode_resolve_method_ref (module, p, &p);
455 container = mono_method_get_generic_container (method_def);
457 MonoClass *class_def;
458 g_assert (type == MONO_TYPE_VAR);
459 class_def = decode_klass_ref (module, p, &p);
463 container = class_def->generic_container;
466 serial = decode_value (p, &p);
469 // FIXME: Memory management
470 t = g_new0 (MonoType, 1);
473 t->data.generic_param = mono_generic_container_get_param (container, num);
474 g_assert (serial == 0);
477 MonoGenericParam *par = (MonoGenericParam*)g_new0 (MonoGenericParamFull, 1);
479 par->serial = serial;
481 par->image = mono_defaults.corlib;
482 t->data.generic_param = par;
485 // FIXME: Maybe use types directly to avoid
486 // the overhead of creating MonoClass-es
487 klass = mono_class_from_mono_type (t);
492 case MONO_AOT_TYPEREF_ARRAY:
494 rank = decode_value (p, &p);
495 eklass = decode_klass_ref (module, p, &p);
496 klass = mono_array_class_get (eklass, rank);
498 case MONO_AOT_TYPEREF_PTR: {
501 t = decode_type (module, p, &p);
504 klass = mono_class_from_mono_type (t);
508 case MONO_AOT_TYPEREF_BLOB_INDEX: {
509 guint32 offset = decode_value (p, &p);
512 p2 = module->blob + offset;
513 klass = decode_klass_ref (module, p2, &p2);
517 g_assert_not_reached ();
520 //printf ("BLA: %s\n", mono_type_full_name (&klass->byval_arg));
525 static MonoClassField*
526 decode_field_info (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
528 MonoClass *klass = decode_klass_ref (module, buf, &buf);
535 token = MONO_TOKEN_FIELD_DEF + decode_value (p, &p);
539 return mono_class_get_field (klass, token);
543 * Parse a MonoType encoded by encode_type () in aot-compiler.c. Return malloc-ed
547 decode_type (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
552 t = g_malloc0 (sizeof (MonoType));
555 if (*p == MONO_TYPE_PINNED) {
558 } else if (*p == MONO_TYPE_BYREF) {
571 case MONO_TYPE_BOOLEAN:
585 case MONO_TYPE_STRING:
586 case MONO_TYPE_OBJECT:
587 case MONO_TYPE_TYPEDBYREF:
589 case MONO_TYPE_VALUETYPE:
590 case MONO_TYPE_CLASS:
591 t->data.klass = decode_klass_ref (module, p, &p);
593 case MONO_TYPE_SZARRAY:
594 t->data.klass = decode_klass_ref (module, p, &p);
600 t->data.type = decode_type (module, p, &p);
602 case MONO_TYPE_GENERICINST: {
604 MonoGenericContext ctx;
608 gclass = decode_klass_ref (module, p, &p);
611 g_assert (gclass->generic_container);
613 memset (&ctx, 0, sizeof (ctx));
614 ctx.class_inst = decode_generic_inst (module, p, &p);
617 type = mono_class_inflate_generic_type (&gclass->byval_arg, &ctx);
618 klass = mono_class_from_mono_type (type);
619 t->data.generic_class = klass->generic_class;
622 case MONO_TYPE_ARRAY: {
623 MonoArrayType *array;
626 // FIXME: memory management
627 array = g_new0 (MonoArrayType, 1);
628 array->eklass = decode_klass_ref (module, p, &p);
631 array->rank = decode_value (p, &p);
632 array->numsizes = decode_value (p, &p);
635 array->sizes = g_malloc0 (sizeof (int) * array->numsizes);
636 for (i = 0; i < array->numsizes; ++i)
637 array->sizes [i] = decode_value (p, &p);
639 array->numlobounds = decode_value (p, &p);
640 if (array->numlobounds)
641 array->lobounds = g_malloc0 (sizeof (int) * array->numlobounds);
642 for (i = 0; i < array->numlobounds; ++i)
643 array->lobounds [i] = decode_value (p, &p);
644 t->data.array = array;
648 case MONO_TYPE_MVAR: {
649 MonoClass *klass = decode_klass_ref (module, p, &p);
652 t->data.generic_param = klass->byval_arg.data.generic_param;
656 g_assert_not_reached ();
664 // FIXME: Error handling, memory management
666 static MonoMethodSignature*
667 decode_signature_with_target (MonoAotModule *module, MonoMethodSignature *target, guint8 *buf, guint8 **endbuf)
669 MonoMethodSignature *sig;
671 int i, param_count, call_conv, gen_param_count = 0;
673 gboolean hasthis, explicit_this, has_gen_params;
677 has_gen_params = (flags & 0x10) != 0;
678 hasthis = (flags & 0x20) != 0;
679 explicit_this = (flags & 0x40) != 0;
680 call_conv = flags & 0x0F;
683 gen_param_count = decode_value (p, &p);
684 param_count = decode_value (p, &p);
685 if (target && param_count != target->param_count)
687 sig = g_malloc0 (MONO_SIZEOF_METHOD_SIGNATURE + param_count * sizeof (MonoType *));
688 sig->param_count = param_count;
689 sig->sentinelpos = -1;
690 sig->hasthis = hasthis;
691 sig->explicit_this = explicit_this;
692 sig->call_convention = call_conv;
693 sig->param_count = param_count;
694 sig->ret = decode_type (module, p, &p);
695 for (i = 0; i < param_count; ++i) {
696 if (*p == MONO_TYPE_SENTINEL) {
697 g_assert (sig->call_convention == MONO_CALL_VARARG);
698 sig->sentinelpos = i;
701 sig->params [i] = decode_type (module, p, &p);
704 if (sig->call_convention == MONO_CALL_VARARG && sig->sentinelpos == -1)
705 sig->sentinelpos = sig->param_count;
712 static MonoMethodSignature*
713 decode_signature (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
715 return decode_signature_with_target (module, NULL, buf, endbuf);
719 sig_matches_target (MonoAotModule *module, MonoMethod *target, guint8 *buf, guint8 **endbuf)
721 MonoMethodSignature *sig;
725 sig = decode_signature_with_target (module, mono_method_signature (target), p, &p);
726 res = sig && mono_metadata_signature_equal (mono_method_signature (target), sig);
732 /* Stores information returned by decode_method_ref () */
737 gboolean no_aot_trampoline;
741 * decode_method_ref_with_target:
743 * Decode a method reference, storing the image/token into a MethodRef structure.
744 * This avoids loading metadata for the method if the caller does not need it. If the method has
745 * no token, then it is loaded from metadata and ref->method is set to the method instance.
746 * If TARGET is non-NULL, abort decoding if it can be determined that the decoded method
747 * couldn't resolve to TARGET, and return FALSE.
748 * There are some kinds of method references which only support a non-null TARGET.
749 * This means that its not possible to decode this into a method, only to check
750 * that the method reference matches a given method. This is normally not a problem
751 * as these wrappers only occur in the extra_methods table, where we already have
752 * a method we want to lookup.
755 decode_method_ref_with_target (MonoAotModule *module, MethodRef *ref, MonoMethod *target, guint8 *buf, guint8 **endbuf)
757 guint32 image_index, value;
758 MonoImage *image = NULL;
761 memset (ref, 0, sizeof (MethodRef));
763 value = decode_value (p, &p);
764 image_index = value >> 24;
766 if (image_index == MONO_AOT_METHODREF_NO_AOT_TRAMPOLINE) {
767 ref->no_aot_trampoline = TRUE;
768 value = decode_value (p, &p);
769 image_index = value >> 24;
772 if (image_index < MONO_AOT_METHODREF_MIN || image_index == MONO_AOT_METHODREF_METHODSPEC || image_index == MONO_AOT_METHODREF_GINST) {
773 if (target && target->wrapper_type)
777 if (image_index == MONO_AOT_METHODREF_WRAPPER) {
778 guint32 wrapper_type;
780 wrapper_type = decode_value (p, &p);
782 if (target && target->wrapper_type != wrapper_type)
786 image = mono_defaults.corlib;
788 switch (wrapper_type) {
789 #ifndef DISABLE_REMOTING
790 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK: {
791 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
795 mono_class_init (m->klass);
796 ref->method = mono_marshal_get_remoting_invoke_with_check (m);
799 case MONO_WRAPPER_PROXY_ISINST: {
800 MonoClass *klass = decode_klass_ref (module, p, &p);
803 ref->method = mono_marshal_get_proxy_cancast (klass);
806 case MONO_WRAPPER_LDFLD:
807 case MONO_WRAPPER_LDFLDA:
808 case MONO_WRAPPER_STFLD:
809 case MONO_WRAPPER_ISINST: {
810 MonoClass *klass = decode_klass_ref (module, p, &p);
813 if (wrapper_type == MONO_WRAPPER_LDFLD)
814 ref->method = mono_marshal_get_ldfld_wrapper (&klass->byval_arg);
815 else if (wrapper_type == MONO_WRAPPER_LDFLDA)
816 ref->method = mono_marshal_get_ldflda_wrapper (&klass->byval_arg);
817 else if (wrapper_type == MONO_WRAPPER_STFLD)
818 ref->method = mono_marshal_get_stfld_wrapper (&klass->byval_arg);
819 else if (wrapper_type == MONO_WRAPPER_ISINST)
820 ref->method = mono_marshal_get_isinst (klass);
822 g_assert_not_reached ();
825 case MONO_WRAPPER_LDFLD_REMOTE:
826 ref->method = mono_marshal_get_ldfld_remote_wrapper (NULL);
828 case MONO_WRAPPER_STFLD_REMOTE:
829 ref->method = mono_marshal_get_stfld_remote_wrapper (NULL);
832 case MONO_WRAPPER_ALLOC: {
833 int atype = decode_value (p, &p);
835 ref->method = mono_gc_get_managed_allocator_by_type (atype);
836 g_assert (ref->method);
839 case MONO_WRAPPER_WRITE_BARRIER:
840 ref->method = mono_gc_get_write_barrier ();
842 case MONO_WRAPPER_STELEMREF: {
843 int subtype = decode_value (p, &p);
845 if (subtype == WRAPPER_SUBTYPE_NONE) {
846 ref->method = mono_marshal_get_stelemref ();
847 } else if (subtype == WRAPPER_SUBTYPE_VIRTUAL_STELEMREF) {
851 kind = decode_value (p, &p);
853 /* Can't decode this */
856 if (target->wrapper_type == MONO_WRAPPER_STELEMREF) {
857 info = mono_marshal_get_wrapper_info (target);
860 if (info->subtype == subtype && info->d.virtual_stelemref.kind == kind)
861 ref->method = target;
868 g_assert_not_reached ();
872 case MONO_WRAPPER_SYNCHRONIZED: {
873 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
877 ref->method = mono_marshal_get_synchronized_wrapper (m);
880 case MONO_WRAPPER_UNKNOWN: {
881 MonoMethodDesc *desc;
882 MonoMethod *orig_method;
883 int subtype = decode_value (p, &p);
885 if (subtype == WRAPPER_SUBTYPE_PTR_TO_STRUCTURE || subtype == WRAPPER_SUBTYPE_STRUCTURE_TO_PTR) {
886 MonoClass *klass = decode_klass_ref (module, p, &p);
893 if (klass != target->klass)
896 if (subtype == WRAPPER_SUBTYPE_PTR_TO_STRUCTURE) {
897 if (strcmp (target->name, "PtrToStructure"))
899 ref->method = mono_marshal_get_ptr_to_struct (klass);
901 if (strcmp (target->name, "StructureToPtr"))
903 ref->method = mono_marshal_get_struct_to_ptr (klass);
905 } else if (subtype == WRAPPER_SUBTYPE_SYNCHRONIZED_INNER) {
906 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
910 ref->method = mono_marshal_get_synchronized_inner_wrapper (m);
911 } else if (subtype == WRAPPER_SUBTYPE_GSHAREDVT_IN) {
912 ref->method = mono_marshal_get_gsharedvt_in_wrapper ();
913 } else if (subtype == WRAPPER_SUBTYPE_GSHAREDVT_OUT) {
914 ref->method = mono_marshal_get_gsharedvt_out_wrapper ();
916 if (subtype == WRAPPER_SUBTYPE_FAST_MONITOR_ENTER)
917 desc = mono_method_desc_new ("Monitor:Enter", FALSE);
918 else if (subtype == WRAPPER_SUBTYPE_FAST_MONITOR_EXIT)
919 desc = mono_method_desc_new ("Monitor:Exit", FALSE);
920 else if (subtype == WRAPPER_SUBTYPE_FAST_MONITOR_ENTER_V4)
921 desc = mono_method_desc_new ("Monitor:Enter(object,bool&)", FALSE);
923 g_assert_not_reached ();
924 orig_method = mono_method_desc_search_in_class (desc, mono_defaults.monitor_class);
925 g_assert (orig_method);
926 mono_method_desc_free (desc);
927 ref->method = mono_monitor_get_fast_path (orig_method);
931 case MONO_WRAPPER_MANAGED_TO_MANAGED: {
932 int subtype = decode_value (p, &p);
934 if (subtype == WRAPPER_SUBTYPE_ELEMENT_ADDR) {
935 int rank = decode_value (p, &p);
936 int elem_size = decode_value (p, &p);
938 ref->method = mono_marshal_get_array_address (rank, elem_size);
939 } else if (subtype == WRAPPER_SUBTYPE_STRING_CTOR) {
943 m = decode_resolve_method_ref (module, p, &p);
949 g_assert (target->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED);
951 info = mono_marshal_get_wrapper_info (target);
952 if (info && info->subtype == subtype && info->d.string_ctor.method == m)
953 ref->method = target;
959 case MONO_WRAPPER_MANAGED_TO_NATIVE: {
961 int subtype = decode_value (p, &p);
964 if (subtype == WRAPPER_SUBTYPE_ICALL_WRAPPER) {
969 if (strcmp (target->name, name) != 0)
971 ref->method = target;
973 m = decode_resolve_method_ref (module, p, &p);
978 /* This should only happen when looking for an extra method */
981 if (mono_marshal_method_from_wrapper (target) == m)
982 ref->method = target;
988 case MONO_WRAPPER_CASTCLASS: {
989 int subtype = decode_value (p, &p);
991 if (subtype == WRAPPER_SUBTYPE_CASTCLASS_WITH_CACHE)
992 ref->method = mono_marshal_get_castclass_with_cache ();
993 else if (subtype == WRAPPER_SUBTYPE_ISINST_WITH_CACHE)
994 ref->method = mono_marshal_get_isinst_with_cache ();
996 g_assert_not_reached ();
999 case MONO_WRAPPER_RUNTIME_INVOKE: {
1000 int subtype = decode_value (p, &p);
1005 if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_DYNAMIC) {
1006 if (strcmp (target->name, "runtime_invoke_dynamic") != 0)
1008 ref->method = target;
1009 } else if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_DIRECT) {
1010 /* Direct wrapper */
1011 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
1015 ref->method = mono_marshal_get_runtime_invoke (m, FALSE);
1016 } else if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_VIRTUAL) {
1017 /* Virtual direct wrapper */
1018 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
1022 ref->method = mono_marshal_get_runtime_invoke (m, TRUE);
1024 MonoMethodSignature *sig;
1027 sig = decode_signature_with_target (module, NULL, p, &p);
1028 info = mono_marshal_get_wrapper_info (target);
1031 if (info->subtype != subtype)
1033 g_assert (info->d.runtime_invoke.sig);
1034 if (mono_metadata_signature_equal (sig, info->d.runtime_invoke.sig))
1035 ref->method = target;
1041 case MONO_WRAPPER_DELEGATE_INVOKE:
1042 case MONO_WRAPPER_DELEGATE_BEGIN_INVOKE:
1043 case MONO_WRAPPER_DELEGATE_END_INVOKE: {
1044 gboolean is_inflated = decode_value (p, &p);
1048 MonoMethod *invoke, *wrapper;
1050 klass = decode_klass_ref (module, p, &p);
1054 switch (wrapper_type) {
1055 case MONO_WRAPPER_DELEGATE_INVOKE:
1056 invoke = mono_get_delegate_invoke (klass);
1057 wrapper = mono_marshal_get_delegate_invoke (invoke, NULL);
1059 case MONO_WRAPPER_DELEGATE_BEGIN_INVOKE:
1060 invoke = mono_get_delegate_begin_invoke (klass);
1061 wrapper = mono_marshal_get_delegate_begin_invoke (invoke);
1063 case MONO_WRAPPER_DELEGATE_END_INVOKE:
1064 invoke = mono_get_delegate_end_invoke (klass);
1065 wrapper = mono_marshal_get_delegate_end_invoke (invoke);
1068 g_assert_not_reached ();
1071 if (target && wrapper != target)
1073 ref->method = wrapper;
1076 * These wrappers are associated with a signature, not with a method.
1077 * Since we can't decode them into methods, they need a target method.
1082 if (sig_matches_target (module, target, p, &p))
1083 ref->method = target;
1089 case MONO_WRAPPER_NATIVE_TO_MANAGED: {
1093 m = decode_resolve_method_ref (module, p, &p);
1096 klass = decode_klass_ref (module, p, &p);
1099 ref->method = mono_marshal_get_managed_wrapper (m, klass, 0);
1103 g_assert_not_reached ();
1105 } else if (image_index == MONO_AOT_METHODREF_METHODSPEC) {
1106 image_index = decode_value (p, &p);
1107 ref->token = decode_value (p, &p);
1109 image = load_image (module, image_index, TRUE);
1112 } else if (image_index == MONO_AOT_METHODREF_GINST) {
1114 MonoGenericContext ctx;
1117 * These methods do not have a token which resolves them, so we
1118 * resolve them immediately.
1120 klass = decode_klass_ref (module, p, &p);
1124 if (target && target->klass != klass)
1127 image_index = decode_value (p, &p);
1128 ref->token = decode_value (p, &p);
1130 image = load_image (module, image_index, TRUE);
1134 ref->method = mono_get_method_full (image, ref->token, NULL, NULL);
1138 memset (&ctx, 0, sizeof (ctx));
1140 if (FALSE && klass->generic_class) {
1141 ctx.class_inst = klass->generic_class->context.class_inst;
1142 ctx.method_inst = NULL;
1144 ref->method = mono_class_inflate_generic_method_full (ref->method, klass, &ctx);
1147 memset (&ctx, 0, sizeof (ctx));
1149 if (!decode_generic_context (module, &ctx, p, &p))
1152 ref->method = mono_class_inflate_generic_method_full (ref->method, klass, &ctx);
1153 } else if (image_index == MONO_AOT_METHODREF_ARRAY) {
1157 klass = decode_klass_ref (module, p, &p);
1160 method_type = decode_value (p, &p);
1161 switch (method_type) {
1163 ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank);
1166 ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank * 2);
1169 ref->method = mono_class_get_method_from_name (klass, "Get", -1);
1172 ref->method = mono_class_get_method_from_name (klass, "Address", -1);
1175 ref->method = mono_class_get_method_from_name (klass, "Set", -1);
1178 g_assert_not_reached ();
1181 if (image_index == MONO_AOT_METHODREF_LARGE_IMAGE_INDEX) {
1182 image_index = decode_value (p, &p);
1183 value = decode_value (p, &p);
1186 ref->token = MONO_TOKEN_METHOD_DEF | (value & 0xffffff);
1188 image = load_image (module, image_index, TRUE);
1201 decode_method_ref (MonoAotModule *module, MethodRef *ref, guint8 *buf, guint8 **endbuf)
1203 return decode_method_ref_with_target (module, ref, NULL, buf, endbuf);
1207 * decode_resolve_method_ref_with_target:
1209 * Similar to decode_method_ref, but resolve and return the method itself.
1212 decode_resolve_method_ref_with_target (MonoAotModule *module, MonoMethod *target, guint8 *buf, guint8 **endbuf)
1217 res = decode_method_ref_with_target (module, &ref, target, buf, endbuf);
1224 return mono_get_method (ref.image, ref.token, NULL);
1228 decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
1230 return decode_resolve_method_ref_with_target (module, NULL, buf, endbuf);
1234 create_cache_structure (void)
1240 home = g_get_home_dir ();
1244 tmp = g_build_filename (home, ".mono", NULL);
1245 if (!g_file_test (tmp, G_FILE_TEST_IS_DIR)) {
1246 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT creating directory %s", tmp);
1250 err = mkdir (tmp, 0777);
1253 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed: %s", g_strerror (errno));
1259 tmp = g_build_filename (home, ".mono", "aot-cache", NULL);
1260 if (!g_file_test (tmp, G_FILE_TEST_IS_DIR)) {
1261 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT creating directory %s", tmp);
1265 err = mkdir (tmp, 0777);
1268 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed: %s", g_strerror (errno));
1277 * load_aot_module_from_cache:
1279 * Experimental code to AOT compile loaded assemblies on demand.
1282 * - Add environment variable MONO_AOT_CACHE_OPTIONS
1283 * - Add options for controlling the cache size
1284 * - Handle full cache by deleting old assemblies lru style
1285 * - Add options for excluding assemblies during development
1286 * - Maybe add a threshold after an assembly is AOT compiled
1287 * - invoking a new mono process is a security risk
1288 * - recompile the AOT module if one of its dependencies changes
1291 load_aot_module_from_cache (MonoAssembly *assembly, char **aot_name)
1293 char *fname, *cmd, *tmp2, *aot_options;
1302 if (assembly->image->dynamic)
1305 create_cache_structure ();
1307 home = g_get_home_dir ();
1309 tmp2 = g_strdup_printf ("%s-%s%s", assembly->image->assembly_name, assembly->image->guid, SHARED_EXT);
1310 fname = g_build_filename (home, ".mono", "aot-cache", tmp2, NULL);
1314 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT trying to load from cache: '%s'.", fname);
1315 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
1318 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT not found.");
1320 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT precompiling assembly '%s'... ", assembly->image->name);
1322 aot_options = g_strdup_printf ("outfile=%s", fname);
1324 if (spawn_compiler) {
1325 /* FIXME: security */
1326 /* FIXME: Has to pass the assembly loading path to the child process */
1327 cmd = g_strdup_printf ("mono -O=all --aot=%s %s", aot_options, assembly->image->name);
1329 res = g_spawn_command_line_sync (cmd, &out, &err, &exit_status, NULL);
1331 #if !defined(HOST_WIN32) && !defined(__ppc__) && !defined(__ppc64__) && !defined(__powerpc__)
1333 if (!WIFEXITED (exit_status) && (WEXITSTATUS (exit_status) == 0))
1334 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT failed: %s.", err);
1336 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT succeeded.");
1343 res = mono_compile_assembly (assembly, mono_parse_default_optimizations (NULL), aot_options);
1345 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT failed.");
1347 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT succeeded.");
1351 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
1353 g_free (aot_options);
1360 find_symbol (MonoDl *module, gpointer *globals, const char *name, gpointer *value)
1364 guint16 *table, *entry;
1367 char *symbol = (char*)name;
1370 symbol = g_strdup_printf ("_%s", name);
1373 /* The first entry points to the hash */
1374 table = globals [0];
1377 table_size = table [0];
1380 hash = mono_metadata_str_hash (symbol) % table_size;
1382 entry = &table [hash * 2];
1384 /* Search the hash for the index into the globals table */
1386 while (entry [0] != 0) {
1387 guint32 index = entry [0] - 1;
1388 guint32 next = entry [1];
1390 //printf ("X: %s %s\n", (char*)globals [index * 2], name);
1392 if (!strcmp (globals [index * 2], symbol)) {
1393 global_index = index;
1398 entry = &table [next * 2];
1404 if (global_index != -1)
1405 *value = globals [global_index * 2 + 1];
1412 char *err = mono_dl_symbol (module, name, value);
1420 check_usable (MonoAssembly *assembly, MonoAotFileInfo *info, char **out_msg)
1424 gboolean usable = TRUE;
1427 guint32 excluded_cpu_optimizations;
1429 if (strcmp (assembly->image->guid, info->assembly_guid)) {
1430 msg = g_strdup_printf ("doesn't match assembly");
1434 build_info = mono_get_runtime_build_info ();
1435 if (strlen (info->runtime_version) > 0 && strcmp (info->runtime_version, build_info)) {
1436 msg = g_strdup_printf ("compiled against runtime version '%s' while this runtime has version '%s'", info->runtime_version, build_info);
1439 g_free (build_info);
1441 full_aot = info->flags & MONO_AOT_FILE_FLAG_FULL_AOT;
1443 if (mono_aot_only && !full_aot) {
1444 msg = g_strdup_printf ("not compiled with --aot=full");
1447 if (!mono_aot_only && full_aot) {
1448 msg = g_strdup_printf ("compiled with --aot=full");
1452 /* mono_arch_find_imt_method () requires this */
1453 if ((info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM) && !mono_use_llvm) {
1454 msg = g_strdup_printf ("compiled against LLVM");
1457 if (!(info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM) && mono_use_llvm) {
1458 msg = g_strdup_printf ("not compiled against LLVM");
1462 if (mini_get_debug_options ()->mdb_optimizations && !(info->flags & MONO_AOT_FILE_FLAG_DEBUG) && !full_aot) {
1463 msg = g_strdup_printf ("not compiled for debugging");
1467 mono_arch_cpu_optimizations (&excluded_cpu_optimizations);
1468 if (info->opts & excluded_cpu_optimizations) {
1469 msg = g_strdup_printf ("compiled with unsupported CPU optimizations");
1473 if (!mono_aot_only && (info->simd_opts & ~mono_arch_cpu_enumerate_simd_versions ())) {
1474 msg = g_strdup_printf ("compiled with unsupported SIMD extensions");
1480 if (info->gc_name_index != -1) {
1481 char *gc_name = (char*)&blob [info->gc_name_index];
1482 const char *current_gc_name = mono_gc_get_gc_name ();
1484 if (strcmp (current_gc_name, gc_name) != 0) {
1485 msg = g_strdup_printf ("compiled against GC %s, while the current runtime uses GC %s.\n", gc_name, current_gc_name);
1495 load_aot_module (MonoAssembly *assembly, gpointer user_data)
1498 MonoAotModule *amodule;
1500 gboolean usable = TRUE;
1501 char *version_symbol = NULL;
1503 gpointer *globals = NULL;
1504 MonoAotFileInfo *info = NULL;
1507 gboolean do_load_image = TRUE;
1509 if (mono_compile_aot)
1512 if (assembly->image->aot_module)
1514 * Already loaded. This can happen because the assembly loading code might invoke
1515 * the assembly load hooks multiple times for the same assembly.
1519 if (assembly->image->dynamic || assembly->ref_only)
1522 if (mono_security_get_mode () == MONO_SECURITY_MODE_CAS)
1526 if (static_aot_modules)
1527 info = g_hash_table_lookup (static_aot_modules, assembly->aname.name);
1533 /* Statically linked AOT module */
1535 aot_name = g_strdup_printf ("%s", assembly->aname.name);
1536 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "Found statically linked AOT module '%s'.\n", aot_name);
1537 globals = info->globals;
1540 sofile = load_aot_module_from_cache (assembly, &aot_name);
1543 aot_name = g_strdup_printf ("%s%s", assembly->image->name, SHARED_EXT);
1545 sofile = mono_dl_open (aot_name, MONO_DL_LAZY, &err);
1548 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed to load AOT module %s: %s\n", aot_name, err);
1554 if (!sofile && !globals) {
1555 if (mono_aot_only && assembly->image->tables [MONO_TABLE_METHOD].rows) {
1556 fprintf (stderr, "Failed to load AOT module '%s' in aot-only mode.\n", aot_name);
1564 find_symbol (sofile, globals, "mono_aot_version", (gpointer *) &version_symbol);
1565 find_symbol (sofile, globals, "mono_aot_file_info", (gpointer*)&info);
1568 if (version_symbol) {
1569 /* Old file format */
1570 version = atoi (version_symbol);
1573 version = info->version;
1576 if (version != MONO_AOT_FILE_VERSION) {
1577 msg = g_strdup_printf ("wrong file format version (expected %d got %d)", MONO_AOT_FILE_VERSION, version);
1580 usable = check_usable (assembly, info, &msg);
1584 if (mono_aot_only) {
1585 fprintf (stderr, "Failed to load AOT module '%s' while running in aot-only mode: %s.\n", aot_name, msg);
1588 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is unusable: %s.\n", aot_name, msg);
1593 mono_dl_close (sofile);
1594 assembly->image->aot_module = NULL;
1599 g_assert (info->double_align == __alignof__ (double));
1600 g_assert (info->long_align == __alignof__ (gint64));
1604 amodule = g_new0 (MonoAotModule, 1);
1605 amodule->aot_name = aot_name;
1606 amodule->assembly = assembly;
1608 memcpy (&amodule->info, info, sizeof (*info));
1610 amodule->got = amodule->info.got;
1611 amodule->got [0] = assembly->image;
1612 amodule->globals = globals;
1613 amodule->sofile = sofile;
1614 amodule->method_to_code = g_hash_table_new (mono_aligned_addr_hash, NULL);
1615 amodule->blob = blob;
1617 /* Read image table */
1619 guint32 table_len, i;
1622 table = info->image_table;
1625 table_len = *(guint32*)table;
1626 table += sizeof (guint32);
1627 amodule->image_table = g_new0 (MonoImage*, table_len);
1628 amodule->image_names = g_new0 (MonoAssemblyName, table_len);
1629 amodule->image_guids = g_new0 (char*, table_len);
1630 amodule->image_table_len = table_len;
1631 for (i = 0; i < table_len; ++i) {
1632 MonoAssemblyName *aname = &(amodule->image_names [i]);
1634 aname->name = g_strdup (table);
1635 table += strlen (table) + 1;
1636 amodule->image_guids [i] = g_strdup (table);
1637 table += strlen (table) + 1;
1639 aname->culture = g_strdup (table);
1640 table += strlen (table) + 1;
1641 memcpy (aname->public_key_token, table, strlen (table) + 1);
1642 table += strlen (table) + 1;
1644 table = ALIGN_PTR_TO (table, 8);
1645 aname->flags = *(guint32*)table;
1647 aname->major = *(guint32*)table;
1649 aname->minor = *(guint32*)table;
1651 aname->build = *(guint32*)table;
1653 aname->revision = *(guint32*)table;
1658 amodule->code_offsets = info->code_offsets;
1660 amodule->method_addresses = info->method_addresses;
1662 amodule->code = info->methods;
1664 /* Mask out thumb interop bit */
1665 amodule->code = (void*)((mgreg_t)amodule->code & ~1);
1667 amodule->code_end = info->methods_end;
1668 amodule->method_info_offsets = info->method_info_offsets;
1669 amodule->ex_info_offsets = info->ex_info_offsets;
1670 amodule->class_info_offsets = info->class_info_offsets;
1671 amodule->class_name_table = info->class_name_table;
1672 amodule->extra_method_table = info->extra_method_table;
1673 amodule->extra_method_info_offsets = info->extra_method_info_offsets;
1674 amodule->unbox_trampolines = info->unbox_trampolines;
1675 amodule->unbox_trampolines_end = info->unbox_trampolines_end;
1676 amodule->got_info_offsets = info->got_info_offsets;
1677 amodule->unwind_info = info->unwind_info;
1678 amodule->mem_end = info->mem_end;
1679 amodule->mem_begin = amodule->code;
1680 amodule->plt = info->plt;
1681 amodule->plt_end = info->plt_end;
1682 amodule->mono_eh_frame = info->mono_eh_frame;
1683 amodule->trampolines [MONO_AOT_TRAMP_SPECIFIC] = info->specific_trampolines;
1684 amodule->trampolines [MONO_AOT_TRAMP_STATIC_RGCTX] = info->static_rgctx_trampolines;
1685 amodule->trampolines [MONO_AOT_TRAMP_IMT_THUNK] = info->imt_thunks;
1686 amodule->trampolines [MONO_AOT_TRAMP_GSHAREDVT_ARG] = info->gsharedvt_arg_trampolines;
1687 amodule->thumb_end = info->thumb_end;
1690 if (info->flags & MONO_AOT_FILE_FLAG_DIRECT_METHOD_ADDRESSES) {
1691 /* Compute code_offsets from the method addresses */
1692 amodule->code_offsets = g_malloc0 (amodule->info.nmethods * sizeof (gint32));
1693 for (i = 0; i < amodule->info.nmethods; ++i) {
1694 if (!amodule->method_addresses [i])
1695 amodule->code_offsets [i] = 0xffffffff;
1697 amodule->code_offsets [i] = (char*)amodule->method_addresses [i] - (char*)amodule->code;
1702 if (make_unreadable) {
1703 #ifndef TARGET_WIN32
1705 guint8 *page_start, *page_end;
1708 addr = amodule->mem_begin;
1709 len = amodule->mem_end - amodule->mem_begin;
1711 /* Round down in both directions to avoid modifying data which is not ours */
1712 page_start = (guint8 *) (((gssize) (addr)) & ~ (mono_pagesize () - 1)) + mono_pagesize ();
1713 page_end = (guint8 *) (((gssize) (addr + len)) & ~ (mono_pagesize () - 1));
1714 if (page_end > page_start) {
1715 err = mono_mprotect (page_start, (page_end - page_start), MONO_MMAP_NONE);
1716 g_assert (err == 0);
1723 aot_code_low_addr = MIN (aot_code_low_addr, (gsize)amodule->code);
1724 aot_code_high_addr = MAX (aot_code_high_addr, (gsize)amodule->code_end);
1726 g_hash_table_insert (aot_modules, assembly, amodule);
1729 mono_jit_info_add_aot_module (assembly->image, amodule->code, amodule->code_end);
1731 assembly->image->aot_module = amodule;
1733 if (mono_aot_only) {
1735 find_symbol (amodule->sofile, amodule->globals, "specific_trampolines_page", (gpointer *)&code);
1736 amodule->use_page_trampolines = code != NULL;
1737 /*g_warning ("using page trampolines: %d", amodule->use_page_trampolines);*/
1738 if (mono_defaults.corlib) {
1739 /* The second got slot contains the mscorlib got addr */
1740 MonoAotModule *mscorlib_amodule = mono_defaults.corlib->aot_module;
1742 amodule->got [1] = mscorlib_amodule->got;
1744 amodule->got [1] = amodule->got;
1748 if (mono_gc_is_moving ()) {
1751 memset (&ji, 0, sizeof (ji));
1752 ji.type = MONO_PATCH_INFO_GC_CARD_TABLE_ADDR;
1754 amodule->got [2] = mono_resolve_patch_target (NULL, mono_get_root_domain (), NULL, &ji, FALSE);
1758 * Since we store methoddef and classdef tokens when referring to methods/classes in
1759 * referenced assemblies, we depend on the exact versions of the referenced assemblies.
1760 * MS calls this 'hard binding'. This means we have to load all referenced assemblies
1761 * non-lazily, since we can't handle out-of-date errors later.
1762 * The cached class info also depends on the exact assemblies.
1764 #if defined(__native_client__)
1765 /* TODO: Don't 'load_image' on mscorlib due to a */
1766 /* recursive loading problem. This should be */
1767 /* removed if mscorlib is loaded from disk. */
1768 if (strncmp(assembly->aname.name, "mscorlib", 8)) {
1769 do_load_image = TRUE;
1771 do_load_image = FALSE;
1774 if (do_load_image) {
1775 for (i = 0; i < amodule->image_table_len; ++i)
1776 load_image (amodule, i, FALSE);
1779 if (amodule->out_of_date) {
1780 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);
1781 if (mono_aot_only) {
1782 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);
1787 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT loaded AOT Module for %s.\n", assembly->image->name);
1791 * mono_aot_register_globals:
1793 * This is called by the ctor function in AOT images compiled with the
1794 * 'no-dlsym' option.
1797 mono_aot_register_globals (gpointer *globals)
1799 g_assert_not_reached ();
1803 * mono_aot_register_module:
1805 * This should be called by embedding code to register AOT modules statically linked
1806 * into the executable. AOT_INFO should be the value of the
1807 * 'mono_aot_module_<ASSEMBLY_NAME>_info' global symbol from the AOT module.
1810 mono_aot_register_module (gpointer *aot_info)
1814 MonoAotFileInfo *info = (gpointer)aot_info;
1816 g_assert (info->version == MONO_AOT_FILE_VERSION);
1818 globals = info->globals;
1821 aname = info->assembly_name;
1823 /* This could be called before startup */
1827 if (!static_aot_modules)
1828 static_aot_modules = g_hash_table_new (g_str_hash, g_str_equal);
1830 g_hash_table_insert (static_aot_modules, aname, info);
1837 mono_aot_init (void)
1839 InitializeCriticalSection (&aot_mutex);
1840 InitializeCriticalSection (&aot_page_mutex);
1841 aot_modules = g_hash_table_new (NULL, NULL);
1843 mono_install_assembly_load_hook (load_aot_module, NULL);
1845 if (g_getenv ("MONO_LASTAOT"))
1846 mono_last_aot_method = atoi (g_getenv ("MONO_LASTAOT"));
1847 if (g_getenv ("MONO_AOT_CACHE"))
1848 use_aot_cache = TRUE;
1852 mono_aot_cleanup (void)
1854 if (aot_jit_icall_hash)
1855 g_hash_table_destroy (aot_jit_icall_hash);
1857 g_hash_table_destroy (aot_modules);
1861 decode_cached_class_info (MonoAotModule *module, MonoCachedClassInfo *info, guint8 *buf, guint8 **endbuf)
1867 info->vtable_size = decode_value (buf, &buf);
1868 if (info->vtable_size == -1)
1871 flags = decode_value (buf, &buf);
1872 info->ghcimpl = (flags >> 0) & 0x1;
1873 info->has_finalize = (flags >> 1) & 0x1;
1874 info->has_cctor = (flags >> 2) & 0x1;
1875 info->has_nested_classes = (flags >> 3) & 0x1;
1876 info->blittable = (flags >> 4) & 0x1;
1877 info->has_references = (flags >> 5) & 0x1;
1878 info->has_static_refs = (flags >> 6) & 0x1;
1879 info->no_special_static_fields = (flags >> 7) & 0x1;
1880 info->is_generic_container = (flags >> 8) & 0x1;
1882 if (info->has_cctor) {
1883 res = decode_method_ref (module, &ref, buf, &buf);
1886 info->cctor_token = ref.token;
1888 if (info->has_finalize) {
1889 res = decode_method_ref (module, &ref, buf, &buf);
1892 info->finalize_image = ref.image;
1893 info->finalize_token = ref.token;
1896 info->instance_size = decode_value (buf, &buf);
1897 info->class_size = decode_value (buf, &buf);
1898 info->packing_size = decode_value (buf, &buf);
1899 info->min_align = decode_value (buf, &buf);
1907 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
1910 MonoClass *klass = vtable->klass;
1911 MonoAotModule *amodule = klass->image->aot_module;
1913 MonoCachedClassInfo class_info;
1918 if (MONO_CLASS_IS_INTERFACE (klass) || klass->rank || !amodule)
1921 info = &amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
1924 err = decode_cached_class_info (amodule, &class_info, p, &p);
1928 for (i = 0; i < slot; ++i)
1929 decode_method_ref (amodule, &ref, p, &p);
1931 res = decode_method_ref (amodule, &ref, p, &p);
1934 if (ref.no_aot_trampoline)
1937 if (mono_metadata_token_index (ref.token) == 0 || mono_metadata_token_table (ref.token) != MONO_TABLE_METHOD)
1940 return mono_aot_get_method_from_token (domain, ref.image, ref.token);
1944 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
1946 MonoAotModule *amodule = klass->image->aot_module;
1950 if (klass->rank || !amodule)
1953 p = (guint8*)&amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
1955 err = decode_cached_class_info (amodule, res, p, &p);
1963 * mono_aot_get_class_from_name:
1965 * Obtains a MonoClass with a given namespace and a given name which is located in IMAGE,
1966 * using a cache stored in the AOT file.
1967 * Stores the resulting class in *KLASS if found, stores NULL otherwise.
1969 * Returns: TRUE if the klass was found/not found in the cache, FALSE if no aot file was
1973 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
1975 MonoAotModule *amodule = image->aot_module;
1976 guint16 *table, *entry;
1979 char full_name_buf [1024];
1981 const char *name2, *name_space2;
1983 guint32 cols [MONO_TYPEDEF_SIZE];
1984 GHashTable *nspace_table;
1986 if (!amodule || !amodule->class_name_table)
1993 /* First look in the cache */
1994 if (!amodule->name_cache)
1995 amodule->name_cache = g_hash_table_new (g_str_hash, g_str_equal);
1996 nspace_table = g_hash_table_lookup (amodule->name_cache, name_space);
1998 *klass = g_hash_table_lookup (nspace_table, name);
2005 table_size = amodule->class_name_table [0];
2006 table = amodule->class_name_table + 1;
2008 if (name_space [0] == '\0')
2009 full_name = g_strdup_printf ("%s", name);
2011 if (strlen (name_space) + strlen (name) < 1000) {
2012 sprintf (full_name_buf, "%s.%s", name_space, name);
2013 full_name = full_name_buf;
2015 full_name = g_strdup_printf ("%s.%s", name_space, name);
2018 hash = mono_metadata_str_hash (full_name) % table_size;
2019 if (full_name != full_name_buf)
2022 entry = &table [hash * 2];
2024 if (entry [0] != 0) {
2025 t = &image->tables [MONO_TABLE_TYPEDEF];
2028 guint32 index = entry [0];
2029 guint32 next = entry [1];
2030 guint32 token = mono_metadata_make_token (MONO_TABLE_TYPEDEF, index);
2032 name_table_accesses ++;
2034 mono_metadata_decode_row (t, index - 1, cols, MONO_TYPEDEF_SIZE);
2036 name2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
2037 name_space2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
2039 if (!strcmp (name, name2) && !strcmp (name_space, name_space2)) {
2041 *klass = mono_class_get (image, token);
2046 nspace_table = g_hash_table_lookup (amodule->name_cache, name_space);
2047 if (!nspace_table) {
2048 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
2049 g_hash_table_insert (amodule->name_cache, (char*)name_space2, nspace_table);
2051 g_hash_table_insert (nspace_table, (char*)name2, *klass);
2058 entry = &table [next * 2];
2071 * decode_mono_eh_frame:
2073 * Decode the EH information emitted by our modified LLVM compiler and construct a
2074 * MonoJitInfo structure from it.
2075 * LOCKING: Acquires the domain lock.
2078 decode_llvm_mono_eh_frame (MonoAotModule *amodule, MonoDomain *domain,
2079 MonoMethod *method, guint8 *code,
2080 MonoJitExceptionInfo *clauses, int num_clauses,
2081 int extra_size, GSList **nesting,
2082 int *this_reg, int *this_offset)
2085 guint8 *fde, *cie, *code_start, *code_end;
2086 int version, fde_count;
2088 int i, j, pos, left, right, offset, offset1, offset2, code_len, func_encoding;
2089 MonoJitExceptionInfo *ei;
2090 guint32 fde_len, ei_len, nested_len, nindex;
2091 gpointer *type_info;
2093 MonoLLVMFDEInfo info;
2095 g_assert (amodule->mono_eh_frame);
2097 p = amodule->mono_eh_frame;
2099 /* p points to data emitted by LLVM in DwarfException::EmitMonoEHFrame () */
2103 g_assert (version == 1 || version == 2);
2109 func_encoding = DW_EH_PE_pcrel;
2111 p = ALIGN_PTR_TO (p, 4);
2113 fde_count = *(guint32*)p;
2117 /* There is +1 entry in the table */
2118 cie = p + ((fde_count + 1) * 8);
2120 /* Binary search in the table to find the entry for code */
2121 if (func_encoding == DW_EH_PE_absptr) {
2123 * Table entries are encoded as DW_EH_PE_absptr, because the ios linker can move functions inside object files to make thumb work,
2124 * so the offsets between two symbols in the text segment are not assembler constant.
2126 g_assert (sizeof(gpointer) == 4);
2127 offset = GPOINTER_TO_INT (code);
2129 /* Table entries are encoded as DW_EH_PE_pcrel relative to mono_eh_frame */
2130 offset = code - amodule->mono_eh_frame;
2136 pos = (left + right) / 2;
2138 offset1 = table [(pos * 2)];
2139 if (pos + 1 == fde_count) {
2140 if (func_encoding == DW_EH_PE_absptr)
2141 offset2 = GPOINTER_TO_INT (amodule->code_end);
2143 offset2 = amodule->code_end - amodule->code;
2145 offset2 = table [(pos + 1) * 2];
2148 if (offset < offset1)
2150 else if (offset >= offset2)
2156 if (func_encoding == DW_EH_PE_absptr) {
2157 code_start = (gpointer)(gsize)table [(pos * 2)];
2158 code_end = (gpointer)(gsize)table [(pos * 2) + 2];
2160 code_start = amodule->mono_eh_frame + table [(pos * 2)];
2161 /* This won't overflow because there is +1 entry in the table */
2162 code_end = amodule->mono_eh_frame + table [(pos * 2) + 2];
2164 code_len = code_end - code_start;
2166 g_assert (code >= code_start && code < code_end);
2168 if (amodule->thumb_end && (guint8*)code_start < amodule->thumb_end)
2169 /* Clear thumb flag */
2170 code_start = (guint8*)(((mgreg_t)code_start) & ~1);
2172 fde = amodule->mono_eh_frame + table [(pos * 2) + 1];
2173 /* This won't overflow because there is +1 entry in the table */
2174 fde_len = table [(pos * 2) + 2 + 1] - table [(pos * 2) + 1];
2176 mono_unwind_decode_llvm_mono_fde (fde, fde_len, cie, code_start, &info);
2178 ei_len = info.ex_info_len;
2179 type_info = info.type_info;
2180 *this_reg = info.this_reg;
2181 *this_offset = info.this_offset;
2183 /* Count number of nested clauses */
2185 for (i = 0; i < ei_len; ++i) {
2186 /* This might be unaligned */
2187 gint32 cindex1 = read32 (type_info [i]);
2190 for (l = nesting [cindex1]; l; l = l->next) {
2191 gint32 nesting_cindex = GPOINTER_TO_INT (l->data);
2193 for (j = 0; j < ei_len; ++j) {
2194 gint32 cindex2 = read32 (type_info [j]);
2196 if (cindex2 == nesting_cindex)
2203 * LLVM might represent one IL region with multiple regions, so have to
2204 * allocate a new JI.
2207 mono_domain_alloc0 (domain, MONO_SIZEOF_JIT_INFO + (sizeof (MonoJitExceptionInfo) * (ei_len + nested_len)) + extra_size);
2209 jinfo->code_size = code_len;
2210 jinfo->used_regs = mono_cache_unwind_info (info.unw_info, info.unw_info_len);
2211 jinfo->method = method;
2212 jinfo->code_start = code;
2213 jinfo->domain_neutral = 0;
2214 /* This signals that used_regs points to a normal cached unwind info */
2215 jinfo->from_aot = 0;
2216 jinfo->num_clauses = ei_len + nested_len;
2218 for (i = 0; i < ei_len; ++i) {
2220 * orig_jinfo contains the original IL exception info saved by the AOT
2221 * compiler, we have to combine that with the information produced by LLVM
2223 /* The type_info entries contain IL clause indexes */
2224 int clause_index = read32 (type_info [i]);
2225 MonoJitExceptionInfo *jei = &jinfo->clauses [i];
2226 MonoJitExceptionInfo *orig_jei = &clauses [clause_index];
2228 g_assert (clause_index < num_clauses);
2229 jei->flags = orig_jei->flags;
2230 jei->data.catch_class = orig_jei->data.catch_class;
2232 jei->try_start = ei [i].try_start;
2233 jei->try_end = ei [i].try_end;
2234 jei->handler_start = ei [i].handler_start;
2236 /* Make sure we transition to thumb when a handler starts */
2237 if (amodule->thumb_end && (guint8*)jei->handler_start < amodule->thumb_end)
2238 jei->handler_start = (void*)((mgreg_t)jei->handler_start + 1);
2241 /* See exception_cb () in mini-llvm.c as to why this is needed */
2243 for (i = 0; i < ei_len; ++i) {
2244 gint32 cindex1 = read32 (type_info [i]);
2247 for (l = nesting [cindex1]; l; l = l->next) {
2248 gint32 nesting_cindex = GPOINTER_TO_INT (l->data);
2250 for (j = 0; j < ei_len; ++j) {
2251 gint32 cindex2 = read32 (type_info [j]);
2253 if (cindex2 == nesting_cindex) {
2255 * The try interval comes from the nested clause, everything else from the
2258 memcpy (&jinfo->clauses [nindex], &jinfo->clauses [j], sizeof (MonoJitExceptionInfo));
2259 jinfo->clauses [nindex].try_start = jinfo->clauses [i].try_start;
2260 jinfo->clauses [nindex].try_end = jinfo->clauses [i].try_end;
2266 g_assert (nindex == ei_len + nested_len);
2272 * LOCKING: Acquires the domain lock.
2275 decode_exception_debug_info (MonoAotModule *amodule, MonoDomain *domain,
2276 MonoMethod *method, guint8* ex_info, guint8 *addr,
2277 guint8 *code, guint32 code_len)
2279 int i, buf_len, num_clauses;
2281 guint used_int_regs, flags;
2282 gboolean has_generic_jit_info, has_dwarf_unwind_info, has_clauses, has_seq_points, has_try_block_holes, has_arch_eh_jit_info;
2283 gboolean from_llvm, has_gc_map;
2285 int generic_info_size, try_holes_info_size, num_holes, arch_eh_jit_info_size;
2286 int this_reg = 0, this_offset = 0;
2288 /* Load the method info from the AOT file */
2291 flags = decode_value (p, &p);
2292 has_generic_jit_info = (flags & 1) != 0;
2293 has_dwarf_unwind_info = (flags & 2) != 0;
2294 has_clauses = (flags & 4) != 0;
2295 has_seq_points = (flags & 8) != 0;
2296 from_llvm = (flags & 16) != 0;
2297 has_try_block_holes = (flags & 32) != 0;
2298 has_gc_map = (flags & 64) != 0;
2299 has_arch_eh_jit_info = (flags & 128) != 0;
2301 if (has_dwarf_unwind_info) {
2304 offset = decode_value (p, &p);
2305 g_assert (offset < (1 << 30));
2306 used_int_regs = offset;
2308 used_int_regs = decode_value (p, &p);
2310 if (has_generic_jit_info)
2311 generic_info_size = sizeof (MonoGenericJitInfo);
2313 generic_info_size = 0;
2315 if (has_try_block_holes) {
2316 num_holes = decode_value (p, &p);
2317 try_holes_info_size = sizeof (MonoTryBlockHoleTableJitInfo) + num_holes * sizeof (MonoTryBlockHoleJitInfo);
2319 num_holes = try_holes_info_size = 0;
2321 /* Exception table */
2323 num_clauses = decode_value (p, &p);
2326 if (has_arch_eh_jit_info)
2327 arch_eh_jit_info_size = sizeof (MonoArchEHJitInfo);
2329 arch_eh_jit_info_size = 0;
2332 MonoJitExceptionInfo *clauses;
2336 * Part of the info is encoded by the AOT compiler, the rest is in the .eh_frame
2339 clauses = g_new0 (MonoJitExceptionInfo, num_clauses);
2340 nesting = g_new0 (GSList*, num_clauses);
2342 for (i = 0; i < num_clauses; ++i) {
2343 MonoJitExceptionInfo *ei = &clauses [i];
2345 ei->flags = decode_value (p, &p);
2347 if (decode_value (p, &p))
2348 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
2350 /* Read the list of nesting clauses */
2352 int nesting_index = decode_value (p, &p);
2353 if (nesting_index == -1)
2355 nesting [i] = g_slist_prepend (nesting [i], GINT_TO_POINTER (nesting_index));
2359 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);
2360 jinfo->from_llvm = 1;
2363 for (i = 0; i < num_clauses; ++i)
2364 g_slist_free (nesting [i]);
2368 mono_domain_alloc0 (domain, MONO_SIZEOF_JIT_INFO + (sizeof (MonoJitExceptionInfo) * num_clauses) + generic_info_size + try_holes_info_size + arch_eh_jit_info_size);
2369 jinfo->num_clauses = num_clauses;
2371 for (i = 0; i < jinfo->num_clauses; ++i) {
2372 MonoJitExceptionInfo *ei = &jinfo->clauses [i];
2374 ei->flags = decode_value (p, &p);
2376 ei->exvar_offset = decode_value (p, &p);
2378 if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER || ei->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
2379 ei->data.filter = code + decode_value (p, &p);
2381 if (decode_value (p, &p))
2382 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
2385 ei->try_start = code + decode_value (p, &p);
2386 ei->try_end = code + decode_value (p, &p);
2387 ei->handler_start = code + decode_value (p, &p);
2390 jinfo->code_size = code_len;
2391 jinfo->used_regs = used_int_regs;
2392 jinfo->method = method;
2393 jinfo->code_start = code;
2394 jinfo->domain_neutral = 0;
2395 jinfo->from_aot = 1;
2398 if (has_generic_jit_info) {
2399 MonoGenericJitInfo *gi;
2401 jinfo->has_generic_jit_info = 1;
2403 gi = mono_jit_info_get_generic_jit_info (jinfo);
2406 gi->nlocs = decode_value (p, &p);
2408 gi->locations = mono_domain_alloc0 (domain, gi->nlocs * sizeof (MonoDwarfLocListEntry));
2409 for (i = 0; i < gi->nlocs; ++i) {
2410 MonoDwarfLocListEntry *entry = &gi->locations [i];
2412 entry->is_reg = decode_value (p, &p);
2413 entry->reg = decode_value (p, &p);
2415 entry->offset = decode_value (p, &p);
2417 entry->from = decode_value (p, &p);
2418 entry->to = decode_value (p, &p);
2422 gi->has_this = this_reg != -1;
2423 gi->this_reg = this_reg;
2424 gi->this_offset = this_offset;
2426 gi->has_this = decode_value (p, &p);
2427 gi->this_reg = decode_value (p, &p);
2428 gi->this_offset = decode_value (p, &p);
2432 jinfo->method = decode_resolve_method_ref (amodule, p, &p);
2434 gi->generic_sharing_context = g_new0 (MonoGenericSharingContext, 1);
2435 if (decode_value (p, &p)) {
2438 MonoGenericSharingContext *gsctx = gi->generic_sharing_context;
2440 n = decode_value (p, &p);
2442 gsctx->var_is_vt = g_new0 (gboolean, n);
2443 for (i = 0; i < n; ++i)
2444 gsctx->var_is_vt [i] = decode_value (p, &p);
2446 n = decode_value (p, &p);
2448 gsctx->mvar_is_vt = g_new0 (gboolean, n);
2449 for (i = 0; i < n; ++i)
2450 gsctx->mvar_is_vt [i] = decode_value (p, &p);
2455 if (has_try_block_holes) {
2456 MonoTryBlockHoleTableJitInfo *table;
2458 jinfo->has_try_block_holes = 1;
2460 table = mono_jit_info_get_try_block_hole_table_info (jinfo);
2463 table->num_holes = (guint16)num_holes;
2464 for (i = 0; i < num_holes; ++i) {
2465 MonoTryBlockHoleJitInfo *hole = &table->holes [i];
2466 hole->clause = decode_value (p, &p);
2467 hole->length = decode_value (p, &p);
2468 hole->offset = decode_value (p, &p);
2472 if (has_arch_eh_jit_info) {
2473 MonoArchEHJitInfo *eh_info;
2475 jinfo->has_arch_eh_info = 1;
2477 eh_info = mono_jit_info_get_arch_eh_info (jinfo);
2478 eh_info->stack_size = decode_value (p, &p);
2481 if (has_seq_points) {
2482 MonoSeqPointInfo *seq_points;
2483 int il_offset, native_offset, last_il_offset, last_native_offset, j;
2485 int len = decode_value (p, &p);
2487 seq_points = g_malloc0 (sizeof (MonoSeqPointInfo) + (len - MONO_ZERO_LEN_ARRAY) * sizeof (SeqPoint));
2488 seq_points->len = len;
2489 last_il_offset = last_native_offset = 0;
2490 for (i = 0; i < len; ++i) {
2491 SeqPoint *sp = &seq_points->seq_points [i];
2492 il_offset = last_il_offset + decode_value (p, &p);
2493 native_offset = last_native_offset + decode_value (p, &p);
2495 sp->il_offset = il_offset;
2496 sp->native_offset = native_offset;
2498 sp->next_len = decode_value (p, &p);
2499 sp->next = g_new (int, sp->next_len);
2500 for (j = 0; j < sp->next_len; ++j)
2501 sp->next [j] = decode_value (p, &p);
2503 last_il_offset = il_offset;
2504 last_native_offset = native_offset;
2507 mono_domain_lock (domain);
2508 g_hash_table_insert (domain_jit_info (domain)->seq_points, method, seq_points);
2509 mono_domain_unlock (domain);
2512 /* Load debug info */
2513 buf_len = decode_value (p, &p);
2514 mono_debug_add_aot_method (domain, method, code, p, buf_len);
2518 int map_size = decode_value (p, &p);
2519 /* The GC map requires 4 bytes of alignment */
2520 while ((guint64)(gsize)p % 4)
2526 if (amodule != jinfo->method->klass->image->aot_module) {
2529 ji_to_amodule = g_hash_table_new (NULL, NULL);
2530 g_hash_table_insert (ji_to_amodule, jinfo, amodule);
2538 * mono_aot_get_unwind_info:
2540 * Return a pointer to the DWARF unwind info belonging to JI.
2543 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
2545 MonoAotModule *amodule = ji->method->klass->image->aot_module;
2547 guint8 *code = ji->code_start;
2550 g_assert (ji->from_aot);
2552 if (!(code >= amodule->code && code <= amodule->code_end)) {
2553 /* ji belongs to a different aot module than amodule */
2555 g_assert (ji_to_amodule);
2556 amodule = g_hash_table_lookup (ji_to_amodule, ji);
2558 g_assert (code >= amodule->code && code <= amodule->code_end);
2562 p = amodule->unwind_info + ji->used_regs;
2563 *unwind_info_len = decode_value (p, &p);
2567 static G_GNUC_UNUSED int
2568 compare_ints (const void *a, const void *b)
2570 return *(gint32*)a - *(gint32*)b;
2574 msort_code_offsets_internal (gint32 *array, int lo, int hi, gint32 *scratch)
2576 int mid = (lo + hi) / 2;
2583 for (i = lo; i < hi; ++i)
2584 if (array [(i * 2)] > array [(i * 2) + 2])
2587 /* Already sorted */
2591 msort_code_offsets_internal (array, lo, mid, scratch);
2592 msort_code_offsets_internal (array, mid + 1, hi, scratch);
2594 if (array [mid * 2] < array [(mid + 1) * 2])
2600 for (i = lo; i <= hi; i ++) {
2601 if (t_lo <= mid && ((t_hi > hi) || array [t_lo * 2] < array [t_hi * 2])) {
2602 scratch [(i * 2)] = array [t_lo * 2];
2603 scratch [(i * 2) + 1] = array [(t_lo *2) + 1];
2606 scratch [(i * 2)] = array [t_hi * 2];
2607 scratch [(i * 2) + 1] = array [(t_hi *2) + 1];
2611 for (i = lo; i <= hi; ++i) {
2612 array [(i * 2)] = scratch [i * 2];
2613 array [(i * 2) + 1] = scratch [(i * 2) + 1];
2618 msort_code_offsets (gint32 *array, int len)
2622 scratch = g_new (gint32, len * 2);
2623 msort_code_offsets_internal (array, 0, len - 1, scratch);
2628 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
2630 int pos, left, right, offset, offset1, offset2, code_len;
2631 int method_index, table_len;
2633 MonoAotModule *amodule = image->aot_module;
2636 guint8 *code, *ex_info, *p;
2638 int nmethods = amodule->info.nmethods;
2639 gint32 *code_offsets;
2645 if (domain != mono_get_root_domain ())
2649 offset = (guint8*)addr - amodule->code;
2651 /* Compute a sorted table mapping code offsets to method indexes. */
2652 if (!amodule->sorted_code_offsets) {
2653 code_offsets = g_new0 (gint32, nmethods * 2);
2655 for (i = 0; i < nmethods; ++i) {
2656 /* Skip the -1 entries to speed up sorting */
2657 if (amodule->code_offsets [i] == 0xffffffff)
2659 code_offsets [(offsets_len * 2)] = amodule->code_offsets [i];
2660 code_offsets [(offsets_len *2) + 1] = i;
2663 /* Use a merge sort as this is mostly sorted */
2664 msort_code_offsets (code_offsets, offsets_len);
2665 //qsort (code_offsets, offsets_len, sizeof (gint32) * 2, compare_ints);
2666 for (i = 0; i < offsets_len -1; ++i)
2667 g_assert (code_offsets [(i * 2)] <= code_offsets [(i + 1) * 2]);
2669 amodule->sorted_code_offsets_len = offsets_len;
2670 mono_memory_barrier ();
2671 if (InterlockedCompareExchangePointer ((gpointer*)&amodule->sorted_code_offsets, code_offsets, NULL) != NULL)
2672 /* Somebody got in before us */
2673 g_free (code_offsets);
2676 code_offsets = amodule->sorted_code_offsets;
2677 offsets_len = amodule->sorted_code_offsets_len;
2679 if (offsets_len > 0 && (offset < code_offsets [0] || offset >= (amodule->code_end - amodule->code)))
2682 /* Binary search in the sorted_code_offsets table */
2684 right = offsets_len;
2686 pos = (left + right) / 2;
2688 offset1 = code_offsets [(pos * 2)];
2689 if (pos + 1 == offsets_len)
2690 offset2 = amodule->code_end - amodule->code;
2692 offset2 = code_offsets [(pos + 1) * 2];
2694 if (offset < offset1)
2696 else if (offset >= offset2)
2702 g_assert (offset >= code_offsets [(pos * 2)]);
2703 if (pos + 1 < offsets_len)
2704 g_assert (offset < code_offsets [((pos + 1) * 2)]);
2705 method_index = code_offsets [(pos * 2) + 1];
2707 code = &amodule->code [amodule->code_offsets [method_index]];
2708 ex_info = &amodule->blob [mono_aot_get_offset (amodule->ex_info_offsets, method_index)];
2710 if (pos == offsets_len - 1)
2711 code_len = amodule->code_end - code;
2713 code_len = code_offsets [(pos + 1) * 2] - code_offsets [pos * 2];
2715 g_assert ((guint8*)code <= (guint8*)addr && (guint8*)addr < (guint8*)code + code_len);
2717 /* Might be a wrapper/extra method */
2718 if (amodule->extra_methods) {
2720 method = g_hash_table_lookup (amodule->extra_methods, GUINT_TO_POINTER (method_index));
2727 if (method_index >= image->tables [MONO_TABLE_METHOD].rows) {
2729 * This is hit for extra methods which are called directly, so they are
2730 * not in amodule->extra_methods.
2732 table_len = amodule->extra_method_info_offsets [0];
2733 table = amodule->extra_method_info_offsets + 1;
2740 pos = ((left + right) / 2);
2742 g_assert (pos < table_len);
2744 if (table [pos * 2] < method_index)
2746 else if (table [pos * 2] > method_index)
2752 p = amodule->blob + table [(pos * 2) + 1];
2753 method = decode_resolve_method_ref (amodule, p, &p);
2755 /* Happens when a random address is passed in which matches a not-yey called wrapper encoded using its name */
2758 token = mono_metadata_make_token (MONO_TABLE_METHOD, method_index + 1);
2759 method = mono_get_method (image, token, NULL);
2766 //printf ("F: %s\n", mono_method_full_name (method, TRUE));
2768 jinfo = decode_exception_debug_info (amodule, domain, method, ex_info, addr, code, code_len);
2770 g_assert ((guint8*)addr >= (guint8*)jinfo->code_start);
2771 g_assert ((guint8*)addr < (guint8*)jinfo->code_start + jinfo->code_size);
2773 /* Add it to the normal JitInfo tables */
2774 mono_jit_info_table_add (domain, jinfo);
2780 decode_patch (MonoAotModule *aot_module, MonoMemPool *mp, MonoJumpInfo *ji, guint8 *buf, guint8 **endbuf)
2788 case MONO_PATCH_INFO_METHOD:
2789 case MONO_PATCH_INFO_METHOD_JUMP:
2790 case MONO_PATCH_INFO_ICALL_ADDR:
2791 case MONO_PATCH_INFO_METHOD_RGCTX: {
2795 res = decode_method_ref (aot_module, &ref, p, &p);
2799 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)) {
2800 ji->data.target = mono_create_ftnptr (mono_domain_get (), mono_create_jit_trampoline_from_token (ref.image, ref.token));
2801 ji->type = MONO_PATCH_INFO_ABS;
2805 ji->data.method = ref.method;
2807 ji->data.method = mono_get_method (ref.image, ref.token, NULL);
2808 g_assert (ji->data.method);
2809 mono_class_init (ji->data.method->klass);
2813 case MONO_PATCH_INFO_INTERNAL_METHOD:
2814 case MONO_PATCH_INFO_JIT_ICALL_ADDR: {
2815 guint32 len = decode_value (p, &p);
2817 ji->data.name = (char*)p;
2821 case MONO_PATCH_INFO_METHODCONST:
2823 ji->data.method = decode_resolve_method_ref (aot_module, p, &p);
2824 if (!ji->data.method)
2827 case MONO_PATCH_INFO_VTABLE:
2828 case MONO_PATCH_INFO_CLASS:
2829 case MONO_PATCH_INFO_IID:
2830 case MONO_PATCH_INFO_ADJUSTED_IID:
2832 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2833 if (!ji->data.klass)
2836 case MONO_PATCH_INFO_CLASS_INIT:
2837 case MONO_PATCH_INFO_DELEGATE_TRAMPOLINE:
2838 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2839 if (!ji->data.klass)
2842 case MONO_PATCH_INFO_IMAGE:
2843 ji->data.image = load_image (aot_module, decode_value (p, &p), TRUE);
2844 if (!ji->data.image)
2847 case MONO_PATCH_INFO_FIELD:
2848 case MONO_PATCH_INFO_SFLDA:
2850 ji->data.field = decode_field_info (aot_module, p, &p);
2851 if (!ji->data.field)
2854 case MONO_PATCH_INFO_SWITCH:
2855 ji->data.table = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoBBTable));
2856 ji->data.table->table_size = decode_value (p, &p);
2857 table = mono_domain_alloc (mono_domain_get (), sizeof (gpointer) * ji->data.table->table_size);
2858 ji->data.table->table = (MonoBasicBlock**)table;
2859 for (i = 0; i < ji->data.table->table_size; i++)
2860 table [i] = (gpointer)(gssize)decode_value (p, &p);
2862 case MONO_PATCH_INFO_R4: {
2865 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (float));
2866 val = decode_value (p, &p);
2867 *(float*)ji->data.target = *(float*)&val;
2870 case MONO_PATCH_INFO_R8: {
2874 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (double));
2876 val [0] = decode_value (p, &p);
2877 val [1] = decode_value (p, &p);
2878 v = ((guint64)val [1] << 32) | ((guint64)val [0]);
2879 *(double*)ji->data.target = *(double*)&v;
2882 case MONO_PATCH_INFO_LDSTR:
2883 image = load_image (aot_module, decode_value (p, &p), TRUE);
2886 ji->data.token = mono_jump_info_token_new (mp, image, MONO_TOKEN_STRING + decode_value (p, &p));
2888 case MONO_PATCH_INFO_RVA:
2889 case MONO_PATCH_INFO_DECLSEC:
2890 case MONO_PATCH_INFO_LDTOKEN:
2891 case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
2893 image = load_image (aot_module, decode_value (p, &p), TRUE);
2896 ji->data.token = mono_jump_info_token_new (mp, image, decode_value (p, &p));
2898 ji->data.token->has_context = decode_value (p, &p);
2899 if (ji->data.token->has_context) {
2900 gboolean res = decode_generic_context (aot_module, &ji->data.token->context, p, &p);
2905 case MONO_PATCH_INFO_EXC_NAME:
2906 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2907 if (!ji->data.klass)
2909 ji->data.name = ji->data.klass->name;
2911 case MONO_PATCH_INFO_METHOD_REL:
2912 ji->data.offset = decode_value (p, &p);
2914 case MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG:
2915 case MONO_PATCH_INFO_GENERIC_CLASS_INIT:
2916 case MONO_PATCH_INFO_MONITOR_ENTER:
2917 case MONO_PATCH_INFO_MONITOR_EXIT:
2918 case MONO_PATCH_INFO_GC_CARD_TABLE_ADDR:
2919 case MONO_PATCH_INFO_CASTCLASS_CACHE:
2920 case MONO_PATCH_INFO_JIT_TLS_ID:
2922 case MONO_PATCH_INFO_RGCTX_FETCH: {
2924 MonoJumpInfoRgctxEntry *entry;
2925 guint32 offset, val;
2928 offset = decode_value (p, &p);
2929 val = decode_value (p, &p);
2931 entry = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
2932 p2 = aot_module->blob + offset;
2933 entry->method = decode_resolve_method_ref (aot_module, p2, &p2);
2934 entry->in_mrgctx = ((val & 1) > 0) ? TRUE : FALSE;
2935 entry->info_type = (val >> 1) & 0xff;
2936 entry->data = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
2937 entry->data->type = (val >> 9) & 0xff;
2939 res = decode_patch (aot_module, mp, entry->data, p, &p);
2942 ji->data.rgctx_entry = entry;
2945 case MONO_PATCH_INFO_SEQ_POINT_INFO:
2947 case MONO_PATCH_INFO_LLVM_IMT_TRAMPOLINE: {
2948 MonoJumpInfoImtTramp *imt_tramp = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoImtTramp));
2950 imt_tramp->method = decode_resolve_method_ref (aot_module, p, &p);
2951 imt_tramp->vt_offset = decode_value (p, &p);
2953 ji->data.imt_tramp = imt_tramp;
2956 case MONO_PATCH_INFO_SIGNATURE:
2957 ji->data.target = decode_signature (aot_module, p, &p);
2959 case MONO_PATCH_INFO_GSHAREDVT_CALL: {
2960 MonoJumpInfoGSharedVtCall *info = g_new0 (MonoJumpInfoGSharedVtCall, 1);
2961 info->sig = decode_signature (aot_module, p, &p);
2962 g_assert (info->sig);
2963 info->method = decode_resolve_method_ref (aot_module, p, &p);
2964 g_assert (info->method);
2966 ji->data.target = info;
2970 g_warning ("unhandled type %d", ji->type);
2971 g_assert_not_reached ();
2982 static MonoJumpInfo*
2983 load_patch_info (MonoAotModule *aot_module, MonoMemPool *mp, int n_patches,
2984 guint32 **got_slots,
2985 guint8 *buf, guint8 **endbuf)
2987 MonoJumpInfo *patches;
2993 patches = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo) * n_patches);
2995 *got_slots = g_malloc (sizeof (guint32) * n_patches);
2997 for (pindex = 0; pindex < n_patches; ++pindex) {
2998 MonoJumpInfo *ji = &patches [pindex];
3003 got_offset = decode_value (p, &p);
3005 if (aot_module->got [got_offset]) {
3006 /* Already loaded */
3007 //printf ("HIT!\n");
3009 shared_p = aot_module->blob + mono_aot_get_offset (aot_module->got_info_offsets, got_offset);
3011 ji->type = decode_value (shared_p, &shared_p);
3013 res = decode_patch (aot_module, mp, ji, shared_p, &shared_p);
3018 (*got_slots) [pindex] = got_offset;
3025 g_free (*got_slots);
3032 register_jump_target_got_slot (MonoDomain *domain, MonoMethod *method, gpointer *got_slot)
3035 * Jump addresses cannot be patched by the trampoline code since it
3036 * does not have access to the caller's address. Instead, we collect
3037 * the addresses of the GOT slots pointing to a method, and patch
3038 * them after the method has been compiled.
3040 MonoJitDomainInfo *info = domain_jit_info (domain);
3043 mono_domain_lock (domain);
3044 if (!info->jump_target_got_slot_hash)
3045 info->jump_target_got_slot_hash = g_hash_table_new (NULL, NULL);
3046 list = g_hash_table_lookup (info->jump_target_got_slot_hash, method);
3047 list = g_slist_prepend (list, got_slot);
3048 g_hash_table_insert (info->jump_target_got_slot_hash, method, list);
3049 mono_domain_unlock (domain);
3055 * Load the method identified by METHOD_INDEX from the AOT image. Return a
3056 * pointer to the native code of the method, or NULL if not found.
3057 * METHOD might not be set if the caller only has the image/token info.
3060 load_method (MonoDomain *domain, MonoAotModule *amodule, MonoImage *image, MonoMethod *method, guint32 token, int method_index)
3063 gboolean from_plt = method == NULL;
3065 int i, pindex, n_patches, used_strings;
3066 gboolean keep_patches = TRUE;
3068 MonoJitInfo *jinfo = NULL;
3069 guint8 *code, *info;
3071 if (mono_profiler_get_events () & MONO_PROFILE_ENTER_LEAVE)
3074 if ((domain != mono_get_root_domain ()) && (!(amodule->info.opts & MONO_OPT_SHARED)))
3075 /* Non shared AOT code can't be used in other appdomains */
3078 if (amodule->out_of_date)
3081 if (amodule->code_offsets [method_index] == 0xffffffff) {
3082 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
3086 method = mono_get_method (image, token, NULL);
3087 full_name = mono_method_full_name (method, TRUE);
3088 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.", full_name);
3094 code = &amodule->code [amodule->code_offsets [method_index]];
3096 info = &amodule->blob [mono_aot_get_offset (amodule->method_info_offsets, method_index)];
3098 if (amodule->thumb_end && code < amodule->thumb_end && ((amodule->info.flags & MONO_AOT_FILE_FLAG_DIRECT_METHOD_ADDRESSES) == 0)) {
3099 /* Convert this into a thumb address */
3100 g_assert ((amodule->code_offsets [method_index] & 0x1) == 0);
3101 code = &amodule->code [amodule->code_offsets [method_index] + 1];
3105 if (!amodule->methods_loaded)
3106 amodule->methods_loaded = g_new0 (guint32, amodule->info.nmethods / 32 + 1);
3109 if ((amodule->methods_loaded [method_index / 32] >> (method_index % 32)) & 0x1)
3112 if (mono_last_aot_method != -1) {
3113 if (mono_jit_stats.methods_aot >= mono_last_aot_method)
3115 else if (mono_jit_stats.methods_aot == mono_last_aot_method - 1) {
3117 method = mono_get_method (image, token, NULL);
3119 char *name = mono_method_full_name (method, TRUE);
3120 printf ("LAST AOT METHOD: %s.\n", name);
3123 printf ("LAST AOT METHOD: %p %d\n", code, method_index);
3131 klass = method->klass;
3132 decode_klass_ref (amodule, p, &p);
3134 klass = decode_klass_ref (amodule, p, &p);
3137 if (amodule->info.opts & MONO_OPT_SHARED)
3138 used_strings = decode_value (p, &p);
3142 for (i = 0; i < used_strings; i++) {
3143 guint token = decode_value (p, &p);
3144 mono_ldstr (mono_get_root_domain (), image, mono_metadata_token_index (token));
3147 if (amodule->info.opts & MONO_OPT_SHARED)
3148 keep_patches = FALSE;
3150 n_patches = decode_value (p, &p);
3152 keep_patches = FALSE;
3155 MonoJumpInfo *patches;
3161 mp = mono_mempool_new ();
3163 patches = load_patch_info (amodule, mp, n_patches, &got_slots, p, &p);
3164 if (patches == NULL)
3167 for (pindex = 0; pindex < n_patches; ++pindex) {
3168 MonoJumpInfo *ji = &patches [pindex];
3170 if (!amodule->got [got_slots [pindex]]) {
3171 amodule->got [got_slots [pindex]] = mono_resolve_patch_target (method, domain, code, ji, TRUE);
3172 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
3173 amodule->got [got_slots [pindex]] = mono_create_ftnptr (domain, amodule->got [got_slots [pindex]]);
3174 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
3175 register_jump_target_got_slot (domain, ji->data.method, &(amodule->got [got_slots [pindex]]));
3177 ji->type = MONO_PATCH_INFO_NONE;
3183 mono_mempool_destroy (mp);
3186 if (mini_get_debug_options ()->load_aot_jit_info_eagerly)
3187 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
3189 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
3193 method = mono_get_method (image, token, NULL);
3195 full_name = mono_method_full_name (method, TRUE);
3198 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
3200 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT FOUND method %s [%p - %p %p]", full_name, code, code + jinfo->code_size, info);
3206 InterlockedIncrement (&mono_jit_stats.methods_aot);
3208 amodule->methods_loaded [method_index / 32] |= 1 << (method_index % 32);
3212 if (method && method->wrapper_type)
3213 g_hash_table_insert (amodule->method_to_code, method, code);
3217 if (mono_profiler_get_events () & MONO_PROFILE_JIT_COMPILATION) {
3221 method = mono_get_method (image, token, NULL);
3224 mono_profiler_method_jit (method);
3225 jinfo = mono_jit_info_table_find (domain, (char*)code);
3227 mono_profiler_method_end_jit (method, jinfo, MONO_PROFILE_OK);
3230 if (from_plt && klass && !klass->generic_container)
3231 mono_runtime_class_init (mono_class_vtable (domain, klass));
3236 /* FIXME: The space in domain->mp is wasted */
3237 if (amodule->info.opts & MONO_OPT_SHARED)
3238 /* No need to cache patches */
3239 mono_mempool_destroy (mp);
3248 find_extra_method_in_amodule (MonoAotModule *amodule, MonoMethod *method)
3250 guint32 table_size, entry_size, hash;
3251 guint32 *table, *entry;
3253 static guint32 n_extra_decodes;
3255 if (!amodule || amodule->out_of_date)
3258 table_size = amodule->extra_method_table [0];
3259 table = amodule->extra_method_table + 1;
3262 hash = mono_aot_method_hash (method) % table_size;
3264 entry = &table [hash * entry_size];
3271 guint32 key = entry [0];
3272 guint32 value = entry [1];
3273 guint32 next = entry [entry_size - 1];
3277 p = amodule->blob + key;
3281 if (!amodule->method_ref_to_method)
3282 amodule->method_ref_to_method = g_hash_table_new (NULL, NULL);
3283 m = g_hash_table_lookup (amodule->method_ref_to_method, p);
3286 m = decode_resolve_method_ref_with_target (amodule, method, p, &p);
3289 g_hash_table_insert (amodule->method_ref_to_method, orig_p, m);
3298 /* Special case: wrappers of shared generic methods */
3299 if (m && method->wrapper_type && m->wrapper_type == m->wrapper_type &&
3300 method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
3301 MonoMethod *w1 = mono_marshal_method_from_wrapper (method);
3302 MonoMethod *w2 = mono_marshal_method_from_wrapper (m);
3304 if (w1->is_inflated && ((MonoMethodInflated *)w1)->declaring == w2) {
3310 /* Methods decoded needlessly */
3312 //printf ("%d %s %s %p\n", n_extra_decodes, mono_method_full_name (method, TRUE), mono_method_full_name (m, TRUE), orig_p);
3317 entry = &table [next * entry_size];
3326 add_module_cb (gpointer key, gpointer value, gpointer user_data)
3328 g_ptr_array_add ((GPtrArray*)user_data, value);
3332 * find_extra_method:
3334 * Try finding METHOD in the extra_method table in all AOT images.
3335 * Return its method index, or 0xffffff if not found. Set OUT_AMODULE to the AOT
3336 * module where the method was found.
3339 find_extra_method (MonoMethod *method, MonoAotModule **out_amodule)
3345 /* Try the method's module first */
3346 *out_amodule = method->klass->image->aot_module;
3347 index = find_extra_method_in_amodule (method->klass->image->aot_module, method);
3348 if (index != 0xffffff)
3352 * Try all other modules.
3353 * This is needed because generic instances klass->image points to the image
3354 * containing the generic definition, but the native code is generated to the
3355 * AOT image which contains the reference.
3358 /* Make a copy to avoid doing the search inside the aot lock */
3359 modules = g_ptr_array_new ();
3361 g_hash_table_foreach (aot_modules, add_module_cb, modules);
3365 for (i = 0; i < modules->len; ++i) {
3366 MonoAotModule *amodule = g_ptr_array_index (modules, i);
3368 if (amodule != method->klass->image->aot_module)
3369 index = find_extra_method_in_amodule (amodule, method);
3370 if (index != 0xffffff) {
3371 *out_amodule = amodule;
3376 g_ptr_array_free (modules, TRUE);
3382 * mono_aot_get_method:
3384 * Return a pointer to the AOTed native code for METHOD if it can be found,
3386 * On platforms with function pointers, this doesn't return a function pointer.
3389 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
3391 MonoClass *klass = method->klass;
3392 guint32 method_index;
3393 MonoAotModule *amodule = klass->image->aot_module;
3399 if (amodule->out_of_date)
3402 if ((method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
3403 (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
3404 (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
3405 (method->flags & METHOD_ATTRIBUTE_ABSTRACT))
3409 * Use the original method instead of its invoke-with-check wrapper.
3410 * This is not a problem when using full-aot, since it doesn't support
3413 if (mono_aot_only && method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)
3414 return mono_aot_get_method (domain, mono_marshal_method_from_wrapper (method));
3416 g_assert (klass->inited);
3418 /* Find method index */
3419 if (method->is_inflated && !method->wrapper_type && mono_method_is_generic_sharable_impl_full (method, FALSE, FALSE, FALSE)) {
3421 * For generic methods, we store the fully shared instance in place of the
3424 method = mono_method_get_declaring_generic_method (method);
3425 method_index = mono_metadata_token_index (method->token) - 1;
3426 } else if (method->is_inflated || !method->token) {
3427 /* This hash table is used to avoid the slower search in the extra_method_table in the AOT image */
3429 code = g_hash_table_lookup (amodule->method_to_code, method);
3434 method_index = find_extra_method (method, &amodule);
3436 * Special case the ICollection<T> wrappers for arrays, as they cannot
3437 * be statically enumerated, and each wrapper ends up calling the same
3440 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED && method->klass->rank && strstr (method->name, "System.Collections.Generic")) {
3441 MonoMethod *m = mono_aot_get_array_helper_from_wrapper (method);
3443 code = mono_aot_get_method (domain, m);
3445 if (mono_method_needs_static_rgctx_invoke (m, FALSE)) {
3446 code = mono_create_static_rgctx_trampoline (m, mono_create_ftnptr (domain, code));
3447 /* The call above returns an ftnptr */
3448 code = mono_get_addr_from_ftnptr (code);
3456 * Special case Array.GetGenericValueImpl which is a generic icall.
3457 * Generic sharing currently can't handle it, but the icall returns data using
3458 * an out parameter, so the managed-to-native wrappers can share the same code.
3460 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass == mono_defaults.array_class && !strcmp (method->name, "GetGenericValueImpl")) {
3462 MonoGenericContext ctx;
3463 MonoType *args [16];
3465 if (mono_method_signature (method)->params [1]->type == MONO_TYPE_OBJECT)
3466 /* Avoid recursion */
3469 m = mono_class_get_method_from_name (mono_defaults.array_class, "GetGenericValueImpl", 2);
3472 memset (&ctx, 0, sizeof (ctx));
3473 args [0] = &mono_defaults.object_class->byval_arg;
3474 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
3476 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method (m, &ctx), TRUE, TRUE);
3479 * Get the code for the <object> instantiation which should be emitted into
3480 * the mscorlib aot image by the AOT compiler.
3482 code = mono_aot_get_method (domain, m);
3487 /* Same for CompareExchange<T> and Exchange<T> */
3488 /* Same for Volatile.Read<T>/Write<T> */
3489 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass->image == mono_defaults.corlib &&
3490 ((!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])) ||
3491 (!strcmp (method->klass->name_space, "System.Threading") && !strcmp (method->klass->name, "Volatile") && (!strcmp (method->name, "Read") && MONO_TYPE_IS_REFERENCE (mono_method_signature (method)->ret))) ||
3492 (!strcmp (method->klass->name_space, "System.Threading") && !strcmp (method->klass->name, "Volatile") && (!strcmp (method->name, "Write") && MONO_TYPE_IS_REFERENCE (mono_method_signature (method)->params [1]))))) {
3494 MonoGenericContext ctx;
3495 MonoType *args [16];
3496 gpointer iter = NULL;
3498 while ((m = mono_class_get_methods (method->klass, &iter))) {
3499 if (mono_method_signature (m)->generic_param_count && !strcmp (m->name, method->name))
3504 memset (&ctx, 0, sizeof (ctx));
3505 args [0] = &mono_defaults.object_class->byval_arg;
3506 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
3508 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method (m, &ctx), TRUE, TRUE);
3510 /* Avoid recursion */
3515 * Get the code for the <object> instantiation which should be emitted into
3516 * the mscorlib aot image by the AOT compiler.
3518 code = mono_aot_get_method (domain, m);
3523 if (method_index == 0xffffff && method->is_inflated && mono_method_is_generic_sharable_impl_full (method, FALSE, FALSE, TRUE)) {
3525 /* Use the all-vt shared method since this is what was AOTed */
3526 method_index = find_extra_method (mini_get_shared_method_full (method, TRUE, TRUE), &amodule);
3527 if (method_index != 0xffffff)
3528 method = mini_get_shared_method_full (method, TRUE, FALSE);
3531 if (method_index == 0xffffff) {
3532 if (mono_aot_only && mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
3535 full_name = mono_method_full_name (method, TRUE);
3536 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.\n", full_name);
3542 if (method_index == 0xffffff)
3545 /* Needed by find_jit_info */
3547 if (!amodule->extra_methods)
3548 amodule->extra_methods = g_hash_table_new (NULL, NULL);
3549 g_hash_table_insert (amodule->extra_methods, GUINT_TO_POINTER (method_index), method);
3553 method_index = mono_metadata_token_index (method->token) - 1;
3556 return load_method (domain, amodule, klass->image, method, method->token, method_index);
3560 * Same as mono_aot_get_method, but we try to avoid loading any metadata from the
3564 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
3566 MonoAotModule *aot_module = image->aot_module;
3572 method_index = mono_metadata_token_index (token) - 1;
3574 return load_method (domain, aot_module, image, NULL, token, method_index);
3580 } IsGotEntryUserData;
3583 check_is_got_entry (gpointer key, gpointer value, gpointer user_data)
3585 IsGotEntryUserData *data = (IsGotEntryUserData*)user_data;
3586 MonoAotModule *aot_module = (MonoAotModule*)value;
3588 if (aot_module->got && (data->addr >= (guint8*)(aot_module->got)) && (data->addr < (guint8*)(aot_module->got + aot_module->info.got_size)))
3593 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
3595 IsGotEntryUserData user_data;
3600 user_data.addr = addr;
3601 user_data.res = FALSE;
3603 g_hash_table_foreach (aot_modules, check_is_got_entry, &user_data);
3606 return user_data.res;
3611 MonoAotModule *module;
3612 } FindAotModuleUserData;
3615 find_aot_module_cb (gpointer key, gpointer value, gpointer user_data)
3617 FindAotModuleUserData *data = (FindAotModuleUserData*)user_data;
3618 MonoAotModule *aot_module = (MonoAotModule*)value;
3620 if ((data->addr >= (guint8*)(aot_module->code)) && (data->addr < (guint8*)(aot_module->code_end)))
3621 data->module = aot_module;
3624 static inline MonoAotModule*
3625 find_aot_module (guint8 *code)
3627 FindAotModuleUserData user_data;
3632 /* Reading these need no locking */
3633 if (((gsize)code < aot_code_low_addr) || ((gsize)code > aot_code_high_addr))
3636 user_data.addr = code;
3637 user_data.module = NULL;
3640 g_hash_table_foreach (aot_modules, find_aot_module_cb, &user_data);
3643 return user_data.module;
3647 mono_aot_patch_plt_entry (guint8 *code, gpointer *got, mgreg_t *regs, guint8 *addr)
3650 * Since AOT code is only used in the root domain,
3651 * mono_domain_get () != mono_get_root_domain () means the calling method
3652 * is AppDomain:InvokeInDomain, so this is the same check as in
3653 * mono_method_same_domain () but without loading the metadata for the method.
3655 if (mono_domain_get () == mono_get_root_domain ())
3656 mono_arch_patch_plt_entry (code, got, regs, addr);
3660 * mono_aot_plt_resolve:
3662 * This function is called by the entries in the PLT to resolve the actual method that
3663 * needs to be called. It returns a trampoline to the method and patches the PLT entry.
3664 * Returns NULL if the something cannot be loaded.
3667 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
3669 #ifdef MONO_ARCH_AOT_SUPPORTED
3670 guint8 *p, *target, *plt_entry;
3672 MonoAotModule *module = (MonoAotModule*)aot_module;
3673 gboolean res, no_ftnptr = FALSE;
3675 gboolean using_gsharedvt = FALSE;
3677 //printf ("DYN: %p %d\n", aot_module, plt_info_offset);
3679 p = &module->blob [plt_info_offset];
3681 ji.type = decode_value (p, &p);
3683 mp = mono_mempool_new_size (512);
3684 res = decode_patch (module, mp, &ji, p, &p);
3687 mono_mempool_destroy (mp);
3691 #ifdef MONO_ARCH_GSHAREDVT_SUPPORTED
3692 using_gsharedvt = TRUE;
3696 * Avoid calling resolve_patch_target in the full-aot case if possible, since
3697 * it would create a trampoline, and we don't need that.
3698 * We could do this only if the method does not need the special handling
3699 * in mono_magic_trampoline ().
3701 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) &&
3702 !mono_method_needs_static_rgctx_invoke (ji.data.method, FALSE) && !using_gsharedvt) {
3703 target = mono_jit_compile_method (ji.data.method);
3706 target = mono_resolve_patch_target (NULL, mono_domain_get (), NULL, &ji, TRUE);
3710 * The trampoline expects us to return a function descriptor on platforms which use
3711 * it, but resolve_patch_target returns a direct function pointer for some type of
3712 * patches, so have to translate between the two.
3713 * FIXME: Clean this up, but how ?
3715 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) {
3716 /* These should already have a function descriptor */
3717 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3718 /* Our function descriptors have a 0 environment, gcc created ones don't */
3719 if (ji.type != MONO_PATCH_INFO_INTERNAL_METHOD && ji.type != MONO_PATCH_INFO_JIT_ICALL_ADDR && ji.type != MONO_PATCH_INFO_ICALL_ADDR)
3720 g_assert (((gpointer*)target) [2] == 0);
3723 } else if (!no_ftnptr) {
3724 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3725 g_assert (((gpointer*)target) [2] != 0);
3727 target = mono_create_ftnptr (mono_domain_get (), target);
3730 mono_mempool_destroy (mp);
3732 /* Patch the PLT entry with target which might be the actual method not a trampoline */
3733 plt_entry = mono_aot_get_plt_entry (code);
3734 g_assert (plt_entry);
3735 mono_aot_patch_plt_entry (plt_entry, module->got, NULL, target);
3739 g_assert_not_reached ();
3747 * Initialize the PLT table of the AOT module. Called lazily when the first AOT
3748 * method in the module is loaded to avoid committing memory by writing to it.
3749 * LOCKING: Assumes the AOT lock is held.
3752 init_plt (MonoAotModule *amodule)
3757 if (amodule->plt_inited)
3760 tramp = mono_create_specific_trampoline (amodule, MONO_TRAMPOLINE_AOT_PLT, mono_get_root_domain (), NULL);
3763 * Initialize the PLT entries in the GOT to point to the default targets.
3766 tramp = mono_create_ftnptr (mono_domain_get (), tramp);
3767 for (i = 1; i < amodule->info.plt_size; ++i)
3768 /* All the default entries point to the AOT trampoline */
3769 ((gpointer*)amodule->got)[amodule->info.plt_got_offset_base + i] = tramp;
3771 amodule->plt_inited = TRUE;
3775 * mono_aot_get_plt_entry:
3777 * Return the address of the PLT entry called by the code at CODE if exists.
3780 mono_aot_get_plt_entry (guint8 *code)
3782 MonoAotModule *amodule = find_aot_module (code);
3783 guint8 *target = NULL;
3789 if (amodule->thumb_end && code < amodule->thumb_end) {
3790 return mono_arm_get_thumb_plt_entry (code);
3794 #ifdef MONO_ARCH_AOT_SUPPORTED
3795 target = mono_arch_get_call_target (code);
3797 g_assert_not_reached ();
3801 while (target != NULL) {
3802 if ((target >= (guint8*)(amodule->plt)) && (target < (guint8*)(amodule->plt_end)))
3805 // Add 4 since mono_arch_get_call_target assumes we're passing
3806 // the instruction after the actual branch instruction.
3807 target = mono_arch_get_call_target (target + 4);
3812 if ((target >= (guint8*)(amodule->plt)) && (target < (guint8*)(amodule->plt_end)))
3820 * mono_aot_get_plt_info_offset:
3822 * Return the PLT info offset belonging to the plt entry called by CODE.
3825 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
3827 guint8 *plt_entry = mono_aot_get_plt_entry (code);
3829 g_assert (plt_entry);
3831 /* The offset is embedded inside the code after the plt entry */
3832 #ifdef MONO_ARCH_AOT_SUPPORTED
3833 return mono_arch_get_plt_info_offset (plt_entry, regs, code);
3835 g_assert_not_reached ();
3841 mono_create_ftnptr_malloc (guint8 *code)
3843 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3844 MonoPPCFunctionDescriptor *ftnptr = g_malloc0 (sizeof (MonoPPCFunctionDescriptor));
3846 ftnptr->code = code;
3857 * mono_aot_register_jit_icall:
3859 * Register a JIT icall which is called by trampolines in full-aot mode. This should
3860 * be called from mono_arch_init () during startup.
3863 mono_aot_register_jit_icall (const char *name, gpointer addr)
3865 /* No need for locking */
3866 if (!aot_jit_icall_hash)
3867 aot_jit_icall_hash = g_hash_table_new (g_str_hash, g_str_equal);
3868 g_hash_table_insert (aot_jit_icall_hash, (char*)name, addr);
3872 * load_function_full:
3874 * Load the function named NAME from the aot image.
3877 load_function_full (MonoAotModule *amodule, const char *name, MonoTrampInfo **out_tinfo)
3881 int n_patches, pindex;
3884 guint32 info_offset;
3888 symbol = g_strdup_printf ("%s", name);
3889 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&code);
3892 g_error ("Symbol '%s' not found in AOT file '%s'.\n", name, amodule->aot_name);
3894 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT FOUND function '%s' in AOT file '%s'.", name, amodule->aot_name);
3898 symbol = g_strdup_printf ("%s_p", name);
3899 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&p);
3902 /* Nothing to patch */
3905 info_offset = *(guint32*)p;
3907 MonoTrampInfo *tinfo;
3908 guint32 code_size, uw_info_len, uw_offset;
3910 /* Construct a MonoTrampInfo from the data in the AOT image */
3912 p += sizeof (guint32);
3913 code_size = *(guint32*)p;
3914 p += sizeof (guint32);
3915 uw_offset = *(guint32*)p;
3916 uw_info = amodule->unwind_info + uw_offset;
3917 uw_info_len = decode_value (uw_info, &uw_info);
3919 tinfo = g_new0 (MonoTrampInfo, 1);
3921 tinfo->code_size = code_size;
3922 tinfo->uw_info = uw_info;
3923 tinfo->uw_info_len = uw_info_len;
3928 p = amodule->blob + info_offset;
3930 /* Similar to mono_aot_load_method () */
3932 n_patches = decode_value (p, &p);
3935 MonoJumpInfo *patches;
3938 mp = mono_mempool_new ();
3940 patches = load_patch_info (amodule, mp, n_patches, &got_slots, p, &p);
3943 for (pindex = 0; pindex < n_patches; ++pindex) {
3944 MonoJumpInfo *ji = &patches [pindex];
3947 if (amodule->got [got_slots [pindex]])
3951 * When this code is executed, the runtime may not be initalized yet, so
3952 * resolve the patch info by hand.
3954 if (ji->type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
3955 if (!strcmp (ji->data.name, "mono_get_lmf_addr")) {
3956 target = mono_get_lmf_addr;
3957 } else if (!strcmp (ji->data.name, "mono_thread_force_interruption_checkpoint")) {
3958 target = mono_thread_force_interruption_checkpoint;
3959 } else if (!strcmp (ji->data.name, "mono_exception_from_token")) {
3960 target = mono_exception_from_token;
3961 } else if (!strcmp (ji->data.name, "mono_throw_exception")) {
3962 target = mono_get_throw_exception ();
3963 } else if (strstr (ji->data.name, "trampoline_func_") == ji->data.name) {
3964 int tramp_type2 = atoi (ji->data.name + strlen ("trampoline_func_"));
3965 target = (gpointer)mono_get_trampoline_func (tramp_type2);
3966 } else if (strstr (ji->data.name, "specific_trampoline_lazy_fetch_") == ji->data.name) {
3967 /* atoll is needed because the the offset is unsigned */
3971 res = sscanf (ji->data.name, "specific_trampoline_lazy_fetch_%u", &slot);
3972 g_assert (res == 1);
3973 target = mono_create_specific_trampoline (GUINT_TO_POINTER (slot), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, mono_get_root_domain (), NULL);
3974 target = mono_create_ftnptr_malloc (target);
3975 } else if (!strcmp (ji->data.name, "specific_trampoline_monitor_enter")) {
3976 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_MONITOR_ENTER, mono_get_root_domain (), NULL);
3977 target = mono_create_ftnptr_malloc (target);
3978 } else if (!strcmp (ji->data.name, "specific_trampoline_monitor_exit")) {
3979 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_MONITOR_EXIT, mono_get_root_domain (), NULL);
3980 target = mono_create_ftnptr_malloc (target);
3981 } else if (!strcmp (ji->data.name, "specific_trampoline_generic_class_init")) {
3982 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_GENERIC_CLASS_INIT, mono_get_root_domain (), NULL);
3983 target = mono_create_ftnptr_malloc (target);
3984 } else if (!strcmp (ji->data.name, "mono_thread_get_and_clear_pending_exception")) {
3985 target = mono_thread_get_and_clear_pending_exception;
3986 } else if (strstr (ji->data.name, "generic_trampoline_")) {
3987 target = mono_aot_get_trampoline (ji->data.name);
3988 } else if (aot_jit_icall_hash && g_hash_table_lookup (aot_jit_icall_hash, ji->data.name)) {
3989 /* Registered by mono_arch_init () */
3990 target = g_hash_table_lookup (aot_jit_icall_hash, ji->data.name);
3992 fprintf (stderr, "Unknown relocation '%s'\n", ji->data.name);
3993 g_assert_not_reached ();
3997 /* Hopefully the code doesn't have patches which need method or
4000 target = mono_resolve_patch_target (NULL, NULL, code, ji, FALSE);
4004 amodule->got [got_slots [pindex]] = target;
4009 mono_mempool_destroy (mp);
4016 load_function (MonoAotModule *amodule, const char *name)
4018 return load_function_full (amodule, name, NULL);
4022 * Return the trampoline identified by NAME from the mscorlib AOT file.
4023 * On ppc64, this returns a function descriptor.
4026 mono_aot_get_trampoline_full (const char *name, MonoTrampInfo **out_tinfo)
4029 MonoAotModule *amodule;
4031 image = mono_defaults.corlib;
4034 amodule = image->aot_module;
4037 return mono_create_ftnptr_malloc (load_function_full (amodule, name, out_tinfo));
4041 mono_aot_get_trampoline (const char *name)
4043 return mono_aot_get_trampoline_full (name, NULL);
4047 #include <mach/mach.h>
4049 static TrampolinePage* trampoline_pages [MONO_AOT_TRAMP_NUM];
4050 /* these sizes are for ARM code, parametrize if porting to other architectures (see arch_emit_specific_trampoline_pages)
4051 * trampoline size is assumed to be 8 bytes below as well (8 is the minimum for 32 bit archs, since we need to store
4052 * two pointers for trampoline in the data page).
4053 * the minimum for the common code must be at least sizeof(TrampolinePage), since we store the page info at the
4054 * beginning of the data page.
4056 static const int trampolines_pages_code_offsets [MONO_AOT_TRAMP_NUM] = {16, 16, 72, 16};
4058 static unsigned char*
4059 get_new_trampoline_from_page (int tramp_type)
4061 MonoAotModule *amodule;
4063 TrampolinePage *page;
4066 vm_address_t addr, taddr;
4068 vm_prot_t prot, max_prot;
4070 unsigned char *code;
4072 mono_aot_page_lock ();
4073 page = trampoline_pages [tramp_type];
4074 if (page && page->trampolines < page->trampolines_end) {
4075 code = page->trampolines;
4076 page->trampolines += 8;
4077 mono_aot_page_unlock ();
4080 mono_aot_page_unlock ();
4081 psize = mono_pagesize ();
4082 /* the trampoline template page is in the mscorlib module */
4083 image = mono_defaults.corlib;
4086 amodule = image->aot_module;
4089 if (tramp_type == MONO_AOT_TRAMP_SPECIFIC)
4090 tpage = load_function (amodule, "specific_trampolines_page");
4091 else if (tramp_type == MONO_AOT_TRAMP_STATIC_RGCTX)
4092 tpage = load_function (amodule, "rgctx_trampolines_page");
4093 else if (tramp_type == MONO_AOT_TRAMP_IMT_THUNK)
4094 tpage = load_function (amodule, "imt_trampolines_page");
4095 else if (tramp_type == MONO_AOT_TRAMP_GSHAREDVT_ARG)
4096 tpage = load_function (amodule, "gsharedvt_arg_trampolines_page");
4098 g_error ("Incorrect tramp type for trampolines page");
4100 /*g_warning ("loaded trampolines page at %x", tpage);*/
4102 /* avoid the unlikely case of looping forever */
4105 while (page == NULL && count-- > 0) {
4107 /* allocate two contiguous pages of memory: the first page will contain the data (like a local constant pool)
4108 * while the second will contain the trampolines.
4110 ret = vm_allocate (mach_task_self (), &addr, psize * 2, VM_FLAGS_ANYWHERE);
4111 if (ret != KERN_SUCCESS) {
4112 g_error ("Cannot allocate memory for trampolines: %d", ret);
4115 /*g_warning ("allocated trampoline double page at %x", addr);*/
4116 /* replace the second page with a remapped trampoline page */
4117 taddr = addr + psize;
4118 vm_deallocate (mach_task_self (), taddr, psize);
4119 ret = vm_remap (mach_task_self (), &taddr, psize, 0, FALSE, mach_task_self(), (vm_address_t)tpage, FALSE, &prot, &max_prot, VM_INHERIT_SHARE);
4120 if (ret != KERN_SUCCESS) {
4121 /* someone else got the page, try again */
4122 vm_deallocate (mach_task_self (), addr, psize);
4125 /*g_warning ("remapped trampoline page at %x", taddr);*/
4127 mono_aot_page_lock ();
4128 page = trampoline_pages [tramp_type];
4129 /* some other thread already allocated, so use that to avoid wasting memory */
4130 if (page && page->trampolines < page->trampolines_end) {
4131 code = page->trampolines;
4132 page->trampolines += 8;
4133 mono_aot_page_unlock ();
4134 vm_deallocate (mach_task_self (), addr, psize);
4135 vm_deallocate (mach_task_self (), taddr, psize);
4138 page = (TrampolinePage*)addr;
4139 page->next = trampoline_pages [tramp_type];
4140 trampoline_pages [tramp_type] = page;
4141 page->trampolines = (void*)(taddr + trampolines_pages_code_offsets [tramp_type]);
4142 page->trampolines_end = (void*)(taddr + psize);
4143 code = page->trampolines;
4144 page->trampolines += 8;
4145 mono_aot_page_unlock ();
4148 g_error ("Cannot allocate more trampoline pages: %d", ret);
4153 static unsigned char*
4154 get_new_trampoline_from_page (int tramp_type)
4156 g_error ("Page trampolines not supported.");
4163 get_new_specific_trampoline_from_page (gpointer tramp, gpointer arg)
4168 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_SPECIFIC);
4170 data = (gpointer*)((char*)code - mono_pagesize ());
4173 /*g_warning ("new trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
4179 get_new_rgctx_trampoline_from_page (gpointer tramp, gpointer arg)
4184 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_STATIC_RGCTX);
4186 data = (gpointer*)((char*)code - mono_pagesize ());
4189 /*g_warning ("new rgctx trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
4195 get_new_imt_trampoline_from_page (gpointer arg)
4200 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_IMT_THUNK);
4202 data = (gpointer*)((char*)code - mono_pagesize ());
4204 /*g_warning ("new imt trampoline at %p for data %p, (stored at %p)", code, arg, data);*/
4210 get_new_gsharedvt_arg_trampoline_from_page (gpointer tramp, gpointer arg)
4215 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_GSHAREDVT_ARG);
4217 data = (gpointer*)((char*)code - mono_pagesize ());
4220 /*g_warning ("new rgctx trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
4224 /* Return a given kind of trampoline */
4226 get_numerous_trampoline (MonoAotTrampoline tramp_type, int n_got_slots, MonoAotModule **out_amodule, guint32 *got_offset, guint32 *out_tramp_size)
4228 MonoAotModule *amodule;
4229 int index, tramp_size;
4232 /* Currently, we keep all trampolines in the mscorlib AOT image */
4233 image = mono_defaults.corlib;
4238 amodule = image->aot_module;
4241 *out_amodule = amodule;
4244 #define MONOTOUCH_TRAMPOLINES_ERROR ". See http://docs.xamarin.com/ios/troubleshooting for instruction on how to fix this condition"
4246 #define MONOTOUCH_TRAMPOLINES_ERROR ""
4248 if (amodule->trampoline_index [tramp_type] == amodule->info.num_trampolines [tramp_type]) {
4249 g_error ("Ran out of trampolines of type %d in '%s' (%d)%s\n",
4250 tramp_type, image->name, amodule->info.num_trampolines [tramp_type], MONOTOUCH_TRAMPOLINES_ERROR);
4252 index = amodule->trampoline_index [tramp_type] ++;
4256 *got_offset = amodule->info.trampoline_got_offset_base [tramp_type] + (index * n_got_slots);
4258 tramp_size = amodule->info.trampoline_size [tramp_type];
4261 *out_tramp_size = tramp_size;
4263 return amodule->trampolines [tramp_type] + (index * tramp_size);
4267 * Return a specific trampoline from the AOT file.
4270 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
4272 MonoAotModule *amodule;
4273 guint32 got_offset, tramp_size;
4274 guint8 *code, *tramp;
4275 static gpointer generic_trampolines [MONO_TRAMPOLINE_NUM];
4276 static gboolean inited;
4277 static guint32 num_trampolines;
4283 mono_counters_register ("Specific trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &num_trampolines);
4292 if (!generic_trampolines [tramp_type]) {
4295 symbol = mono_get_generic_trampoline_name (tramp_type);
4296 generic_trampolines [tramp_type] = mono_aot_get_trampoline (symbol);
4300 tramp = generic_trampolines [tramp_type];
4303 if (USE_PAGE_TRAMPOLINES) {
4304 code = get_new_specific_trampoline_from_page (tramp, arg1);
4307 code = get_numerous_trampoline (MONO_AOT_TRAMP_SPECIFIC, 2, &amodule, &got_offset, &tramp_size);
4309 amodule->got [got_offset] = tramp;
4310 amodule->got [got_offset + 1] = arg1;
4314 *code_len = tramp_size;
4320 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
4322 MonoAotModule *amodule;
4326 if (USE_PAGE_TRAMPOLINES) {
4327 code = get_new_rgctx_trampoline_from_page (addr, ctx);
4329 code = get_numerous_trampoline (MONO_AOT_TRAMP_STATIC_RGCTX, 2, &amodule, &got_offset, NULL);
4331 amodule->got [got_offset] = ctx;
4332 amodule->got [got_offset + 1] = addr;
4335 /* The caller expects an ftnptr */
4336 return mono_create_ftnptr (mono_domain_get (), code);
4340 mono_aot_get_unbox_trampoline (MonoMethod *method)
4342 guint32 method_index = mono_metadata_token_index (method->token) - 1;
4343 MonoAotModule *amodule;
4345 guint32 *ut, *ut_end, *entry;
4346 int low, high, entry_index;
4348 if (method->is_inflated && !mono_method_is_generic_sharable_impl_full (method, FALSE, FALSE, FALSE)) {
4349 method_index = find_extra_method (method, &amodule);
4350 if (method_index == 0xffffff && mono_method_is_generic_sharable_impl_full (method, FALSE, FALSE, TRUE)) {
4351 MonoMethod *shared = mini_get_shared_method_full (method, TRUE, TRUE);
4352 method_index = find_extra_method (shared, &amodule);
4354 g_assert (method_index != 0xffffff);
4356 amodule = method->klass->image->aot_module;
4360 ut = amodule->unbox_trampolines;
4361 ut_end = amodule->unbox_trampolines_end;
4363 /* Do a binary search in the sorted table */
4366 high = (ut_end - ut) / 2;
4367 while (low < high) {
4368 entry_index = (low + high) / 2;
4369 entry = &ut [(entry_index * 2)];
4370 if (entry [0] < method_index) {
4371 low = entry_index + 1;
4372 } else if (entry [0] > method_index) {
4375 if (amodule->info.flags & MONO_AOT_FILE_FLAG_DIRECT_METHOD_ADDRESSES)
4376 code = (gpointer)(gsize)entry [1];
4378 code = amodule->code + entry [1];
4384 /* The caller expects an ftnptr */
4385 return mono_create_ftnptr (mono_domain_get (), code);
4389 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
4393 MonoAotModule *amodule = mono_defaults.corlib->aot_module;
4394 guint32 index = MONO_RGCTX_SLOT_INDEX (slot);
4395 static int count = 0;
4398 if (index >= amodule->info.num_rgctx_fetch_trampolines) {
4399 static gpointer addr;
4403 * Use the general version of the rgctx fetch trampoline. It receives a pair of <slot, trampoline> in the rgctx arg reg.
4406 addr = load_function (amodule, "rgctx_fetch_trampoline_general");
4407 info = mono_domain_alloc0 (mono_get_root_domain (), sizeof (gpointer) * 2);
4408 info [0] = GUINT_TO_POINTER (slot);
4409 info [1] = mono_create_specific_trampoline (GUINT_TO_POINTER (slot), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, mono_get_root_domain (), NULL);
4410 code = mono_aot_get_static_rgctx_trampoline (info, addr);
4411 return mono_create_ftnptr (mono_domain_get (), code);
4414 symbol = mono_get_rgctx_fetch_trampoline_name (slot);
4415 code = load_function (mono_defaults.corlib->aot_module, symbol);
4417 /* The caller expects an ftnptr */
4418 return mono_create_ftnptr (mono_domain_get (), code);
4422 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
4427 int i, index, real_count;
4428 MonoAotModule *amodule;
4431 for (i = 0; i < count; ++i) {
4432 MonoIMTCheckItem *item = imt_entries [i];
4434 if (item->is_equals)
4438 /* Save the entries into an array */
4439 buf = mono_domain_alloc (domain, (real_count + 1) * 2 * sizeof (gpointer));
4441 for (i = 0; i < count; ++i) {
4442 MonoIMTCheckItem *item = imt_entries [i];
4444 if (!item->is_equals)
4447 g_assert (item->key);
4449 buf [(index * 2)] = item->key;
4450 if (item->has_target_code) {
4451 gpointer *p = mono_domain_alloc (domain, sizeof (gpointer));
4452 *p = item->value.target_code;
4453 buf [(index * 2) + 1] = p;
4455 buf [(index * 2) + 1] = &(vtable->vtable [item->value.vtable_slot]);
4459 buf [(index * 2)] = NULL;
4460 buf [(index * 2) + 1] = fail_tramp;
4462 if (USE_PAGE_TRAMPOLINES) {
4463 code = get_new_imt_trampoline_from_page (buf);
4465 code = get_numerous_trampoline (MONO_AOT_TRAMP_IMT_THUNK, 1, &amodule, &got_offset, NULL);
4467 amodule->got [got_offset] = buf;
4474 mono_aot_get_gsharedvt_arg_trampoline (gpointer arg, gpointer addr)
4476 MonoAotModule *amodule;
4480 if (USE_PAGE_TRAMPOLINES) {
4481 code = get_new_gsharedvt_arg_trampoline_from_page (addr, arg);
4483 code = get_numerous_trampoline (MONO_AOT_TRAMP_GSHAREDVT_ARG, 2, &amodule, &got_offset, NULL);
4485 amodule->got [got_offset] = arg;
4486 amodule->got [got_offset + 1] = addr;
4489 /* The caller expects an ftnptr */
4490 return mono_create_ftnptr (mono_domain_get (), code);
4494 * mono_aot_set_make_unreadable:
4496 * Set whenever to make all mmaped memory unreadable. In conjuction with a
4497 * SIGSEGV handler, this is useful to find out which pages the runtime tries to read.
4500 mono_aot_set_make_unreadable (gboolean unreadable)
4504 make_unreadable = unreadable;
4506 if (make_unreadable && !inited) {
4507 mono_counters_register ("AOT pagefaults", MONO_COUNTER_JIT | MONO_COUNTER_INT, &n_pagefaults);
4512 MonoAotModule *module;
4517 find_map (gpointer key, gpointer value, gpointer user_data)
4519 MonoAotModule *module = (MonoAotModule*)value;
4520 FindMapUserData *data = (FindMapUserData*)user_data;
4523 if ((data->ptr >= module->mem_begin) && (data->ptr < module->mem_end))
4524 data->module = module;
4527 static MonoAotModule*
4528 find_module_for_addr (void *ptr)
4530 FindMapUserData data;
4532 if (!make_unreadable)
4536 data.ptr = (guint8*)ptr;
4539 g_hash_table_foreach (aot_modules, (GHFunc)find_map, &data);
4546 * mono_aot_is_pagefault:
4548 * Should be called from a SIGSEGV signal handler to find out whenever @ptr is
4549 * within memory allocated by this module.
4552 mono_aot_is_pagefault (void *ptr)
4554 if (!make_unreadable)
4558 * Not signal safe, but SIGSEGV's are synchronous, and
4559 * this is only turned on by a MONO_DEBUG option.
4561 return find_module_for_addr (ptr) != NULL;
4565 * mono_aot_handle_pagefault:
4567 * Handle a pagefault caused by an unreadable page by making it readable again.
4570 mono_aot_handle_pagefault (void *ptr)
4572 #ifndef PLATFORM_WIN32
4573 guint8* start = (guint8*)ROUND_DOWN (((gssize)ptr), mono_pagesize ());
4577 res = mono_mprotect (start, mono_pagesize (), MONO_MMAP_READ|MONO_MMAP_WRITE|MONO_MMAP_EXEC);
4578 g_assert (res == 0);
4589 mono_aot_init (void)
4594 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
4600 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
4606 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
4612 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
4618 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
4624 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
4630 mono_aot_get_plt_entry (guint8 *code)
4636 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
4642 mono_aot_patch_plt_entry (guint8 *code, gpointer *got, mgreg_t *regs, guint8 *addr)
4647 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
4653 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
4655 g_assert_not_reached ();
4661 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
4663 g_assert_not_reached ();
4668 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
4670 g_assert_not_reached ();
4675 mono_aot_get_trampoline (const char *name)
4677 g_assert_not_reached ();
4682 mono_aot_get_unbox_trampoline (MonoMethod *method)
4684 g_assert_not_reached ();
4689 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
4691 g_assert_not_reached ();
4696 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
4698 g_assert_not_reached ();
4703 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
4705 g_assert_not_reached ();
4710 mono_aot_register_jit_icall (const char *name, gpointer addr)