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 if (sig_matches_target (module, target, p, &p))
1025 ref->method = target;
1031 case MONO_WRAPPER_DELEGATE_INVOKE: {
1032 gboolean is_inflated = decode_value (p, &p);
1036 MonoMethod *invoke, *wrapper;
1038 klass = decode_klass_ref (module, p, &p);
1041 invoke = mono_get_delegate_invoke (klass);
1042 wrapper = mono_marshal_get_delegate_invoke (invoke, NULL);
1043 if (target && wrapper != target)
1045 ref->method = wrapper;
1051 case MONO_WRAPPER_DELEGATE_BEGIN_INVOKE:
1052 case MONO_WRAPPER_DELEGATE_END_INVOKE: {
1054 * These wrappers are associated with a signature, not with a method.
1055 * Since we can't decode them into methods, they need a target method.
1060 if (sig_matches_target (module, target, p, &p))
1061 ref->method = target;
1066 case MONO_WRAPPER_NATIVE_TO_MANAGED: {
1070 m = decode_resolve_method_ref (module, p, &p);
1073 klass = decode_klass_ref (module, p, &p);
1076 ref->method = mono_marshal_get_managed_wrapper (m, klass, 0);
1080 g_assert_not_reached ();
1082 } else if (image_index == MONO_AOT_METHODREF_METHODSPEC) {
1083 image_index = decode_value (p, &p);
1084 ref->token = decode_value (p, &p);
1086 image = load_image (module, image_index, TRUE);
1089 } else if (image_index == MONO_AOT_METHODREF_GINST) {
1091 MonoGenericContext ctx;
1094 * These methods do not have a token which resolves them, so we
1095 * resolve them immediately.
1097 klass = decode_klass_ref (module, p, &p);
1101 if (target && target->klass != klass)
1104 image_index = decode_value (p, &p);
1105 ref->token = decode_value (p, &p);
1107 image = load_image (module, image_index, TRUE);
1111 ref->method = mono_get_method_full (image, ref->token, NULL, NULL);
1115 memset (&ctx, 0, sizeof (ctx));
1117 if (FALSE && klass->generic_class) {
1118 ctx.class_inst = klass->generic_class->context.class_inst;
1119 ctx.method_inst = NULL;
1121 ref->method = mono_class_inflate_generic_method_full (ref->method, klass, &ctx);
1124 memset (&ctx, 0, sizeof (ctx));
1126 if (!decode_generic_context (module, &ctx, p, &p))
1129 ref->method = mono_class_inflate_generic_method_full (ref->method, klass, &ctx);
1130 } else if (image_index == MONO_AOT_METHODREF_ARRAY) {
1134 klass = decode_klass_ref (module, p, &p);
1137 method_type = decode_value (p, &p);
1138 switch (method_type) {
1140 ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank);
1143 ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank * 2);
1146 ref->method = mono_class_get_method_from_name (klass, "Get", -1);
1149 ref->method = mono_class_get_method_from_name (klass, "Address", -1);
1152 ref->method = mono_class_get_method_from_name (klass, "Set", -1);
1155 g_assert_not_reached ();
1158 if (image_index == MONO_AOT_METHODREF_LARGE_IMAGE_INDEX) {
1159 image_index = decode_value (p, &p);
1160 value = decode_value (p, &p);
1163 ref->token = MONO_TOKEN_METHOD_DEF | (value & 0xffffff);
1165 image = load_image (module, image_index, TRUE);
1178 decode_method_ref (MonoAotModule *module, MethodRef *ref, guint8 *buf, guint8 **endbuf)
1180 return decode_method_ref_with_target (module, ref, NULL, buf, endbuf);
1184 * decode_resolve_method_ref_with_target:
1186 * Similar to decode_method_ref, but resolve and return the method itself.
1189 decode_resolve_method_ref_with_target (MonoAotModule *module, MonoMethod *target, guint8 *buf, guint8 **endbuf)
1194 res = decode_method_ref_with_target (module, &ref, target, buf, endbuf);
1201 return mono_get_method (ref.image, ref.token, NULL);
1205 decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
1207 return decode_resolve_method_ref_with_target (module, NULL, buf, endbuf);
1211 create_cache_structure (void)
1217 home = g_get_home_dir ();
1221 tmp = g_build_filename (home, ".mono", NULL);
1222 if (!g_file_test (tmp, G_FILE_TEST_IS_DIR)) {
1223 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT creating directory %s", tmp);
1227 err = mkdir (tmp, 0777);
1230 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed: %s", g_strerror (errno));
1236 tmp = g_build_filename (home, ".mono", "aot-cache", NULL);
1237 if (!g_file_test (tmp, G_FILE_TEST_IS_DIR)) {
1238 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT creating directory %s", tmp);
1242 err = mkdir (tmp, 0777);
1245 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed: %s", g_strerror (errno));
1254 * load_aot_module_from_cache:
1256 * Experimental code to AOT compile loaded assemblies on demand.
1259 * - Add environment variable MONO_AOT_CACHE_OPTIONS
1260 * - Add options for controlling the cache size
1261 * - Handle full cache by deleting old assemblies lru style
1262 * - Add options for excluding assemblies during development
1263 * - Maybe add a threshold after an assembly is AOT compiled
1264 * - invoking a new mono process is a security risk
1265 * - recompile the AOT module if one of its dependencies changes
1268 load_aot_module_from_cache (MonoAssembly *assembly, char **aot_name)
1270 char *fname, *cmd, *tmp2, *aot_options;
1279 if (assembly->image->dynamic)
1282 create_cache_structure ();
1284 home = g_get_home_dir ();
1286 tmp2 = g_strdup_printf ("%s-%s%s", assembly->image->assembly_name, assembly->image->guid, SHARED_EXT);
1287 fname = g_build_filename (home, ".mono", "aot-cache", tmp2, NULL);
1291 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT trying to load from cache: '%s'.", fname);
1292 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
1295 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT not found.");
1297 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT precompiling assembly '%s'... ", assembly->image->name);
1299 aot_options = g_strdup_printf ("outfile=%s", fname);
1301 if (spawn_compiler) {
1302 /* FIXME: security */
1303 /* FIXME: Has to pass the assembly loading path to the child process */
1304 cmd = g_strdup_printf ("mono -O=all --aot=%s %s", aot_options, assembly->image->name);
1306 res = g_spawn_command_line_sync (cmd, &out, &err, &exit_status, NULL);
1308 #if !defined(HOST_WIN32) && !defined(__ppc__) && !defined(__ppc64__) && !defined(__powerpc__)
1310 if (!WIFEXITED (exit_status) && (WEXITSTATUS (exit_status) == 0))
1311 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT failed: %s.", err);
1313 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT succeeded.");
1320 res = mono_compile_assembly (assembly, mono_parse_default_optimizations (NULL), aot_options);
1322 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT failed.");
1324 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT succeeded.");
1328 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
1330 g_free (aot_options);
1337 find_symbol (MonoDl *module, gpointer *globals, const char *name, gpointer *value)
1341 guint16 *table, *entry;
1344 char *symbol = (char*)name;
1347 symbol = g_strdup_printf ("_%s", name);
1350 /* The first entry points to the hash */
1351 table = globals [0];
1354 table_size = table [0];
1357 hash = mono_metadata_str_hash (symbol) % table_size;
1359 entry = &table [hash * 2];
1361 /* Search the hash for the index into the globals table */
1363 while (entry [0] != 0) {
1364 guint32 index = entry [0] - 1;
1365 guint32 next = entry [1];
1367 //printf ("X: %s %s\n", (char*)globals [index * 2], name);
1369 if (!strcmp (globals [index * 2], symbol)) {
1370 global_index = index;
1375 entry = &table [next * 2];
1381 if (global_index != -1)
1382 *value = globals [global_index * 2 + 1];
1389 char *err = mono_dl_symbol (module, name, value);
1397 check_usable (MonoAssembly *assembly, MonoAotFileInfo *info, char **out_msg)
1401 gboolean usable = TRUE;
1404 guint32 excluded_cpu_optimizations;
1406 if (strcmp (assembly->image->guid, info->assembly_guid)) {
1407 msg = g_strdup_printf ("doesn't match assembly");
1411 build_info = mono_get_runtime_build_info ();
1412 if (strlen (info->runtime_version) > 0 && strcmp (info->runtime_version, build_info)) {
1413 msg = g_strdup_printf ("compiled against runtime version '%s' while this runtime has version '%s'", info->runtime_version, build_info);
1416 g_free (build_info);
1418 full_aot = info->flags & MONO_AOT_FILE_FLAG_FULL_AOT;
1420 if (mono_aot_only && !full_aot) {
1421 msg = g_strdup_printf ("not compiled with --aot=full");
1424 if (!mono_aot_only && full_aot) {
1425 msg = g_strdup_printf ("compiled with --aot=full");
1429 /* mono_arch_find_imt_method () requires this */
1430 if ((info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM) && !mono_use_llvm) {
1431 msg = g_strdup_printf ("compiled against LLVM");
1434 if (!(info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM) && mono_use_llvm) {
1435 msg = g_strdup_printf ("not compiled against LLVM");
1439 if (mini_get_debug_options ()->mdb_optimizations && !(info->flags & MONO_AOT_FILE_FLAG_DEBUG) && !full_aot) {
1440 msg = g_strdup_printf ("not compiled for debugging");
1444 mono_arch_cpu_optimizations (&excluded_cpu_optimizations);
1445 if (info->opts & excluded_cpu_optimizations) {
1446 msg = g_strdup_printf ("compiled with unsupported CPU optimizations");
1450 if (!mono_aot_only && (info->simd_opts & ~mono_arch_cpu_enumerate_simd_versions ())) {
1451 msg = g_strdup_printf ("compiled with unsupported SIMD extensions");
1457 if (info->gc_name_index != -1) {
1458 char *gc_name = (char*)&blob [info->gc_name_index];
1459 const char *current_gc_name = mono_gc_get_gc_name ();
1461 if (strcmp (current_gc_name, gc_name) != 0) {
1462 msg = g_strdup_printf ("compiled against GC %s, while the current runtime uses GC %s.\n", gc_name, current_gc_name);
1472 load_aot_module (MonoAssembly *assembly, gpointer user_data)
1475 MonoAotModule *amodule;
1477 gboolean usable = TRUE;
1478 char *version_symbol = NULL;
1480 gpointer *globals = NULL;
1481 MonoAotFileInfo *info = NULL;
1484 gboolean do_load_image = TRUE;
1486 if (mono_compile_aot)
1489 if (assembly->image->aot_module)
1491 * Already loaded. This can happen because the assembly loading code might invoke
1492 * the assembly load hooks multiple times for the same assembly.
1496 if (assembly->image->dynamic)
1499 if (mono_security_get_mode () == MONO_SECURITY_MODE_CAS)
1503 if (static_aot_modules)
1504 info = g_hash_table_lookup (static_aot_modules, assembly->aname.name);
1510 /* Statically linked AOT module */
1512 aot_name = g_strdup_printf ("%s", assembly->aname.name);
1513 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "Found statically linked AOT module '%s'.\n", aot_name);
1514 globals = info->globals;
1517 sofile = load_aot_module_from_cache (assembly, &aot_name);
1520 aot_name = g_strdup_printf ("%s%s", assembly->image->name, SHARED_EXT);
1522 sofile = mono_dl_open (aot_name, MONO_DL_LAZY, &err);
1525 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed to load AOT module %s: %s\n", aot_name, err);
1531 if (!sofile && !globals) {
1532 if (mono_aot_only && assembly->image->tables [MONO_TABLE_METHOD].rows) {
1533 fprintf (stderr, "Failed to load AOT module '%s' in aot-only mode.\n", aot_name);
1541 find_symbol (sofile, globals, "mono_aot_version", (gpointer *) &version_symbol);
1542 find_symbol (sofile, globals, "mono_aot_file_info", (gpointer*)&info);
1545 if (version_symbol) {
1546 /* Old file format */
1547 version = atoi (version_symbol);
1550 version = info->version;
1553 if (version != MONO_AOT_FILE_VERSION) {
1554 msg = g_strdup_printf ("wrong file format version (expected %d got %d)", MONO_AOT_FILE_VERSION, version);
1557 usable = check_usable (assembly, info, &msg);
1561 if (mono_aot_only) {
1562 fprintf (stderr, "Failed to load AOT module '%s' while running in aot-only mode: %s.\n", aot_name, msg);
1565 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is unusable: %s.\n", aot_name, msg);
1570 mono_dl_close (sofile);
1571 assembly->image->aot_module = NULL;
1576 g_assert (info->double_align == __alignof__ (double));
1577 g_assert (info->long_align == __alignof__ (gint64));
1581 amodule = g_new0 (MonoAotModule, 1);
1582 amodule->aot_name = aot_name;
1583 amodule->assembly = assembly;
1585 memcpy (&amodule->info, info, sizeof (*info));
1587 amodule->got = amodule->info.got;
1588 amodule->got [0] = assembly->image;
1589 amodule->globals = globals;
1590 amodule->sofile = sofile;
1591 amodule->method_to_code = g_hash_table_new (mono_aligned_addr_hash, NULL);
1592 amodule->blob = blob;
1594 /* Read image table */
1596 guint32 table_len, i;
1599 table = info->image_table;
1602 table_len = *(guint32*)table;
1603 table += sizeof (guint32);
1604 amodule->image_table = g_new0 (MonoImage*, table_len);
1605 amodule->image_names = g_new0 (MonoAssemblyName, table_len);
1606 amodule->image_guids = g_new0 (char*, table_len);
1607 amodule->image_table_len = table_len;
1608 for (i = 0; i < table_len; ++i) {
1609 MonoAssemblyName *aname = &(amodule->image_names [i]);
1611 aname->name = g_strdup (table);
1612 table += strlen (table) + 1;
1613 amodule->image_guids [i] = g_strdup (table);
1614 table += strlen (table) + 1;
1616 aname->culture = g_strdup (table);
1617 table += strlen (table) + 1;
1618 memcpy (aname->public_key_token, table, strlen (table) + 1);
1619 table += strlen (table) + 1;
1621 table = ALIGN_PTR_TO (table, 8);
1622 aname->flags = *(guint32*)table;
1624 aname->major = *(guint32*)table;
1626 aname->minor = *(guint32*)table;
1628 aname->build = *(guint32*)table;
1630 aname->revision = *(guint32*)table;
1635 amodule->code_offsets = info->code_offsets;
1637 amodule->method_addresses = info->method_addresses;
1639 amodule->code = info->methods;
1641 /* Mask out thumb interop bit */
1642 amodule->code = (void*)((mgreg_t)amodule->code & ~1);
1644 amodule->code_end = info->methods_end;
1645 amodule->method_info_offsets = info->method_info_offsets;
1646 amodule->ex_info_offsets = info->ex_info_offsets;
1647 amodule->class_info_offsets = info->class_info_offsets;
1648 amodule->class_name_table = info->class_name_table;
1649 amodule->extra_method_table = info->extra_method_table;
1650 amodule->extra_method_info_offsets = info->extra_method_info_offsets;
1651 amodule->unbox_trampolines = info->unbox_trampolines;
1652 amodule->unbox_trampolines_end = info->unbox_trampolines_end;
1653 amodule->got_info_offsets = info->got_info_offsets;
1654 amodule->unwind_info = info->unwind_info;
1655 amodule->mem_end = info->mem_end;
1656 amodule->mem_begin = amodule->code;
1657 amodule->plt = info->plt;
1658 amodule->plt_end = info->plt_end;
1659 amodule->mono_eh_frame = info->mono_eh_frame;
1660 amodule->trampolines [MONO_AOT_TRAMP_SPECIFIC] = info->specific_trampolines;
1661 amodule->trampolines [MONO_AOT_TRAMP_STATIC_RGCTX] = info->static_rgctx_trampolines;
1662 amodule->trampolines [MONO_AOT_TRAMP_IMT_THUNK] = info->imt_thunks;
1663 amodule->trampolines [MONO_AOT_TRAMP_GSHAREDVT_ARG] = info->gsharedvt_arg_trampolines;
1664 amodule->thumb_end = info->thumb_end;
1667 if (info->flags & MONO_AOT_FILE_FLAG_DIRECT_METHOD_ADDRESSES) {
1668 /* Compute code_offsets from the method addresses */
1669 amodule->code_offsets = g_malloc0 (amodule->info.nmethods * sizeof (gint32));
1670 for (i = 0; i < amodule->info.nmethods; ++i) {
1671 if (!amodule->method_addresses [i])
1672 amodule->code_offsets [i] = 0xffffffff;
1674 amodule->code_offsets [i] = (char*)amodule->method_addresses [i] - (char*)amodule->code;
1679 if (make_unreadable) {
1680 #ifndef TARGET_WIN32
1682 guint8 *page_start, *page_end;
1685 addr = amodule->mem_begin;
1686 len = amodule->mem_end - amodule->mem_begin;
1688 /* Round down in both directions to avoid modifying data which is not ours */
1689 page_start = (guint8 *) (((gssize) (addr)) & ~ (mono_pagesize () - 1)) + mono_pagesize ();
1690 page_end = (guint8 *) (((gssize) (addr + len)) & ~ (mono_pagesize () - 1));
1691 if (page_end > page_start) {
1692 err = mono_mprotect (page_start, (page_end - page_start), MONO_MMAP_NONE);
1693 g_assert (err == 0);
1700 aot_code_low_addr = MIN (aot_code_low_addr, (gsize)amodule->code);
1701 aot_code_high_addr = MAX (aot_code_high_addr, (gsize)amodule->code_end);
1703 g_hash_table_insert (aot_modules, assembly, amodule);
1706 mono_jit_info_add_aot_module (assembly->image, amodule->code, amodule->code_end);
1708 assembly->image->aot_module = amodule;
1710 if (mono_aot_only) {
1712 find_symbol (amodule->sofile, amodule->globals, "specific_trampolines_page", (gpointer *)&code);
1713 amodule->use_page_trampolines = code != NULL;
1714 /*g_warning ("using page trampolines: %d", amodule->use_page_trampolines);*/
1715 if (mono_defaults.corlib) {
1716 /* The second got slot contains the mscorlib got addr */
1717 MonoAotModule *mscorlib_amodule = mono_defaults.corlib->aot_module;
1719 amodule->got [1] = mscorlib_amodule->got;
1721 amodule->got [1] = amodule->got;
1725 if (mono_gc_is_moving ()) {
1728 memset (&ji, 0, sizeof (ji));
1729 ji.type = MONO_PATCH_INFO_GC_CARD_TABLE_ADDR;
1731 amodule->got [2] = mono_resolve_patch_target (NULL, mono_get_root_domain (), NULL, &ji, FALSE);
1735 * Since we store methoddef and classdef tokens when referring to methods/classes in
1736 * referenced assemblies, we depend on the exact versions of the referenced assemblies.
1737 * MS calls this 'hard binding'. This means we have to load all referenced assemblies
1738 * non-lazily, since we can't handle out-of-date errors later.
1739 * The cached class info also depends on the exact assemblies.
1741 #if defined(__native_client__)
1742 /* TODO: Don't 'load_image' on mscorlib due to a */
1743 /* recursive loading problem. This should be */
1744 /* removed if mscorlib is loaded from disk. */
1745 if (strncmp(assembly->aname.name, "mscorlib", 8)) {
1746 do_load_image = TRUE;
1748 do_load_image = FALSE;
1751 if (do_load_image) {
1752 for (i = 0; i < amodule->image_table_len; ++i)
1753 load_image (amodule, i, FALSE);
1756 if (amodule->out_of_date) {
1757 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);
1758 if (mono_aot_only) {
1759 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);
1764 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT loaded AOT Module for %s.\n", assembly->image->name);
1768 * mono_aot_register_globals:
1770 * This is called by the ctor function in AOT images compiled with the
1771 * 'no-dlsym' option.
1774 mono_aot_register_globals (gpointer *globals)
1776 g_assert_not_reached ();
1780 * mono_aot_register_module:
1782 * This should be called by embedding code to register AOT modules statically linked
1783 * into the executable. AOT_INFO should be the value of the
1784 * 'mono_aot_module_<ASSEMBLY_NAME>_info' global symbol from the AOT module.
1787 mono_aot_register_module (gpointer *aot_info)
1791 MonoAotFileInfo *info = (gpointer)aot_info;
1793 g_assert (info->version == MONO_AOT_FILE_VERSION);
1795 globals = info->globals;
1798 aname = info->assembly_name;
1800 /* This could be called before startup */
1804 if (!static_aot_modules)
1805 static_aot_modules = g_hash_table_new (g_str_hash, g_str_equal);
1807 g_hash_table_insert (static_aot_modules, aname, info);
1814 mono_aot_init (void)
1816 InitializeCriticalSection (&aot_mutex);
1817 InitializeCriticalSection (&aot_page_mutex);
1818 aot_modules = g_hash_table_new (NULL, NULL);
1820 mono_install_assembly_load_hook (load_aot_module, NULL);
1822 if (g_getenv ("MONO_LASTAOT"))
1823 mono_last_aot_method = atoi (g_getenv ("MONO_LASTAOT"));
1824 if (g_getenv ("MONO_AOT_CACHE"))
1825 use_aot_cache = TRUE;
1829 mono_aot_cleanup (void)
1831 if (aot_jit_icall_hash)
1832 g_hash_table_destroy (aot_jit_icall_hash);
1834 g_hash_table_destroy (aot_modules);
1838 decode_cached_class_info (MonoAotModule *module, MonoCachedClassInfo *info, guint8 *buf, guint8 **endbuf)
1844 info->vtable_size = decode_value (buf, &buf);
1845 if (info->vtable_size == -1)
1848 flags = decode_value (buf, &buf);
1849 info->ghcimpl = (flags >> 0) & 0x1;
1850 info->has_finalize = (flags >> 1) & 0x1;
1851 info->has_cctor = (flags >> 2) & 0x1;
1852 info->has_nested_classes = (flags >> 3) & 0x1;
1853 info->blittable = (flags >> 4) & 0x1;
1854 info->has_references = (flags >> 5) & 0x1;
1855 info->has_static_refs = (flags >> 6) & 0x1;
1856 info->no_special_static_fields = (flags >> 7) & 0x1;
1857 info->is_generic_container = (flags >> 8) & 0x1;
1859 if (info->has_cctor) {
1860 res = decode_method_ref (module, &ref, buf, &buf);
1863 info->cctor_token = ref.token;
1865 if (info->has_finalize) {
1866 res = decode_method_ref (module, &ref, buf, &buf);
1869 info->finalize_image = ref.image;
1870 info->finalize_token = ref.token;
1873 info->instance_size = decode_value (buf, &buf);
1874 info->class_size = decode_value (buf, &buf);
1875 info->packing_size = decode_value (buf, &buf);
1876 info->min_align = decode_value (buf, &buf);
1884 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
1887 MonoClass *klass = vtable->klass;
1888 MonoAotModule *amodule = klass->image->aot_module;
1890 MonoCachedClassInfo class_info;
1895 if (MONO_CLASS_IS_INTERFACE (klass) || klass->rank || !amodule)
1898 info = &amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
1901 err = decode_cached_class_info (amodule, &class_info, p, &p);
1905 for (i = 0; i < slot; ++i)
1906 decode_method_ref (amodule, &ref, p, &p);
1908 res = decode_method_ref (amodule, &ref, p, &p);
1911 if (ref.no_aot_trampoline)
1914 if (mono_metadata_token_index (ref.token) == 0 || mono_metadata_token_table (ref.token) != MONO_TABLE_METHOD)
1917 return mono_aot_get_method_from_token (domain, ref.image, ref.token);
1921 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
1923 MonoAotModule *amodule = klass->image->aot_module;
1927 if (klass->rank || !amodule)
1930 p = (guint8*)&amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
1932 err = decode_cached_class_info (amodule, res, p, &p);
1940 * mono_aot_get_class_from_name:
1942 * Obtains a MonoClass with a given namespace and a given name which is located in IMAGE,
1943 * using a cache stored in the AOT file.
1944 * Stores the resulting class in *KLASS if found, stores NULL otherwise.
1946 * Returns: TRUE if the klass was found/not found in the cache, FALSE if no aot file was
1950 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
1952 MonoAotModule *amodule = image->aot_module;
1953 guint16 *table, *entry;
1956 char full_name_buf [1024];
1958 const char *name2, *name_space2;
1960 guint32 cols [MONO_TYPEDEF_SIZE];
1961 GHashTable *nspace_table;
1963 if (!amodule || !amodule->class_name_table)
1970 /* First look in the cache */
1971 if (!amodule->name_cache)
1972 amodule->name_cache = g_hash_table_new (g_str_hash, g_str_equal);
1973 nspace_table = g_hash_table_lookup (amodule->name_cache, name_space);
1975 *klass = g_hash_table_lookup (nspace_table, name);
1982 table_size = amodule->class_name_table [0];
1983 table = amodule->class_name_table + 1;
1985 if (name_space [0] == '\0')
1986 full_name = g_strdup_printf ("%s", name);
1988 if (strlen (name_space) + strlen (name) < 1000) {
1989 sprintf (full_name_buf, "%s.%s", name_space, name);
1990 full_name = full_name_buf;
1992 full_name = g_strdup_printf ("%s.%s", name_space, name);
1995 hash = mono_metadata_str_hash (full_name) % table_size;
1996 if (full_name != full_name_buf)
1999 entry = &table [hash * 2];
2001 if (entry [0] != 0) {
2002 t = &image->tables [MONO_TABLE_TYPEDEF];
2005 guint32 index = entry [0];
2006 guint32 next = entry [1];
2007 guint32 token = mono_metadata_make_token (MONO_TABLE_TYPEDEF, index);
2009 name_table_accesses ++;
2011 mono_metadata_decode_row (t, index - 1, cols, MONO_TYPEDEF_SIZE);
2013 name2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
2014 name_space2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
2016 if (!strcmp (name, name2) && !strcmp (name_space, name_space2)) {
2018 *klass = mono_class_get (image, token);
2023 nspace_table = g_hash_table_lookup (amodule->name_cache, name_space);
2024 if (!nspace_table) {
2025 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
2026 g_hash_table_insert (amodule->name_cache, (char*)name_space2, nspace_table);
2028 g_hash_table_insert (nspace_table, (char*)name2, *klass);
2035 entry = &table [next * 2];
2048 * decode_mono_eh_frame:
2050 * Decode the EH information emitted by our modified LLVM compiler and construct a
2051 * MonoJitInfo structure from it.
2052 * LOCKING: Acquires the domain lock.
2055 decode_llvm_mono_eh_frame (MonoAotModule *amodule, MonoDomain *domain,
2056 MonoMethod *method, guint8 *code,
2057 MonoJitExceptionInfo *clauses, int num_clauses,
2058 int extra_size, GSList **nesting,
2059 int *this_reg, int *this_offset)
2062 guint8 *fde, *cie, *code_start, *code_end;
2063 int version, fde_count;
2065 int i, j, pos, left, right, offset, offset1, offset2, code_len, func_encoding;
2066 MonoJitExceptionInfo *ei;
2067 guint32 fde_len, ei_len, nested_len, nindex;
2068 gpointer *type_info;
2070 MonoLLVMFDEInfo info;
2072 g_assert (amodule->mono_eh_frame);
2074 p = amodule->mono_eh_frame;
2076 /* p points to data emitted by LLVM in DwarfException::EmitMonoEHFrame () */
2080 g_assert (version == 1 || version == 2);
2086 func_encoding = DW_EH_PE_pcrel;
2088 p = ALIGN_PTR_TO (p, 4);
2090 fde_count = *(guint32*)p;
2094 /* There is +1 entry in the table */
2095 cie = p + ((fde_count + 1) * 8);
2097 /* Binary search in the table to find the entry for code */
2098 offset = code - amodule->mono_eh_frame;
2103 pos = (left + right) / 2;
2105 offset1 = table [(pos * 2)];
2106 if (pos + 1 == fde_count) {
2108 offset2 = amodule->code_end - amodule->code;
2110 /* Encoded as DW_EH_PE_pcrel, but relative to mono_eh_frame */
2111 offset2 = table [(pos + 1) * 2];
2114 if (func_encoding == DW_EH_PE_absptr) {
2116 * Encoded as DW_EH_PE_absptr, because the ios linker can move functions inside object files to make thumb work,
2117 * so the offsets between two symbols in the text segment are not assembler constant.
2119 g_assert (sizeof(gpointer) == 4);
2120 offset1 -= (gint32)(gsize)amodule->mono_eh_frame;
2121 offset2 -= (gint32)(gsize)amodule->mono_eh_frame;
2124 if (offset < offset1)
2126 else if (offset >= offset2)
2132 if (func_encoding == DW_EH_PE_absptr) {
2133 code_start = (gpointer)(gsize)table [(pos * 2)];
2134 code_end = (gpointer)(gsize)table [(pos * 2) + 2];
2136 code_start = amodule->mono_eh_frame + table [(pos * 2)];
2137 /* This won't overflow because there is +1 entry in the table */
2138 code_end = amodule->mono_eh_frame + table [(pos * 2) + 2];
2140 code_len = code_end - code_start;
2142 g_assert (code >= code_start && code < code_end);
2144 if (amodule->thumb_end && (guint8*)code_start < amodule->thumb_end)
2145 /* Clear thumb flag */
2146 code_start = (guint8*)(((mgreg_t)code_start) & ~1);
2148 fde = amodule->mono_eh_frame + table [(pos * 2) + 1];
2149 /* This won't overflow because there is +1 entry in the table */
2150 fde_len = table [(pos * 2) + 2 + 1] - table [(pos * 2) + 1];
2152 mono_unwind_decode_llvm_mono_fde (fde, fde_len, cie, code_start, &info);
2154 ei_len = info.ex_info_len;
2155 type_info = info.type_info;
2156 *this_reg = info.this_reg;
2157 *this_offset = info.this_offset;
2159 /* Count number of nested clauses */
2161 for (i = 0; i < ei_len; ++i) {
2162 /* This might be unaligned */
2163 gint32 cindex1 = read32 (type_info [i]);
2166 for (l = nesting [cindex1]; l; l = l->next) {
2167 gint32 nesting_cindex = GPOINTER_TO_INT (l->data);
2169 for (j = 0; j < ei_len; ++j) {
2170 gint32 cindex2 = read32 (type_info [j]);
2172 if (cindex2 == nesting_cindex)
2179 * LLVM might represent one IL region with multiple regions, so have to
2180 * allocate a new JI.
2183 mono_domain_alloc0 (domain, MONO_SIZEOF_JIT_INFO + (sizeof (MonoJitExceptionInfo) * (ei_len + nested_len)) + extra_size);
2185 jinfo->code_size = code_len;
2186 jinfo->used_regs = mono_cache_unwind_info (info.unw_info, info.unw_info_len);
2187 jinfo->method = method;
2188 jinfo->code_start = code;
2189 jinfo->domain_neutral = 0;
2190 /* This signals that used_regs points to a normal cached unwind info */
2191 jinfo->from_aot = 0;
2192 jinfo->num_clauses = ei_len + nested_len;
2194 for (i = 0; i < ei_len; ++i) {
2196 * orig_jinfo contains the original IL exception info saved by the AOT
2197 * compiler, we have to combine that with the information produced by LLVM
2199 /* The type_info entries contain IL clause indexes */
2200 int clause_index = read32 (type_info [i]);
2201 MonoJitExceptionInfo *jei = &jinfo->clauses [i];
2202 MonoJitExceptionInfo *orig_jei = &clauses [clause_index];
2204 g_assert (clause_index < num_clauses);
2205 jei->flags = orig_jei->flags;
2206 jei->data.catch_class = orig_jei->data.catch_class;
2208 jei->try_start = ei [i].try_start;
2209 jei->try_end = ei [i].try_end;
2210 jei->handler_start = ei [i].handler_start;
2212 /* Make sure we transition to thumb when a handler starts */
2213 if (amodule->thumb_end && (guint8*)jei->handler_start < amodule->thumb_end)
2214 jei->handler_start = (void*)((mgreg_t)jei->handler_start + 1);
2217 /* See exception_cb () in mini-llvm.c as to why this is needed */
2219 for (i = 0; i < ei_len; ++i) {
2220 gint32 cindex1 = read32 (type_info [i]);
2223 for (l = nesting [cindex1]; l; l = l->next) {
2224 gint32 nesting_cindex = GPOINTER_TO_INT (l->data);
2226 for (j = 0; j < ei_len; ++j) {
2227 gint32 cindex2 = read32 (type_info [j]);
2229 if (cindex2 == nesting_cindex) {
2231 * The try interval comes from the nested clause, everything else from the
2234 memcpy (&jinfo->clauses [nindex], &jinfo->clauses [j], sizeof (MonoJitExceptionInfo));
2235 jinfo->clauses [nindex].try_start = jinfo->clauses [i].try_start;
2236 jinfo->clauses [nindex].try_end = jinfo->clauses [i].try_end;
2242 g_assert (nindex == ei_len + nested_len);
2248 * LOCKING: Acquires the domain lock.
2251 decode_exception_debug_info (MonoAotModule *amodule, MonoDomain *domain,
2252 MonoMethod *method, guint8* ex_info, guint8 *addr,
2253 guint8 *code, guint32 code_len)
2255 int i, buf_len, num_clauses;
2257 guint used_int_regs, flags;
2258 gboolean has_generic_jit_info, has_dwarf_unwind_info, has_clauses, has_seq_points, has_try_block_holes, has_arch_eh_jit_info;
2259 gboolean from_llvm, has_gc_map;
2261 int generic_info_size, try_holes_info_size, num_holes, arch_eh_jit_info_size;
2262 int this_reg = 0, this_offset = 0;
2264 /* Load the method info from the AOT file */
2267 flags = decode_value (p, &p);
2268 has_generic_jit_info = (flags & 1) != 0;
2269 has_dwarf_unwind_info = (flags & 2) != 0;
2270 has_clauses = (flags & 4) != 0;
2271 has_seq_points = (flags & 8) != 0;
2272 from_llvm = (flags & 16) != 0;
2273 has_try_block_holes = (flags & 32) != 0;
2274 has_gc_map = (flags & 64) != 0;
2275 has_arch_eh_jit_info = (flags & 128) != 0;
2277 if (has_dwarf_unwind_info) {
2280 offset = decode_value (p, &p);
2281 g_assert (offset < (1 << 30));
2282 used_int_regs = offset;
2284 used_int_regs = decode_value (p, &p);
2286 if (has_generic_jit_info)
2287 generic_info_size = sizeof (MonoGenericJitInfo);
2289 generic_info_size = 0;
2291 if (has_try_block_holes) {
2292 num_holes = decode_value (p, &p);
2293 try_holes_info_size = sizeof (MonoTryBlockHoleTableJitInfo) + num_holes * sizeof (MonoTryBlockHoleJitInfo);
2295 num_holes = try_holes_info_size = 0;
2297 /* Exception table */
2299 num_clauses = decode_value (p, &p);
2302 if (has_arch_eh_jit_info)
2303 arch_eh_jit_info_size = sizeof (MonoArchEHJitInfo);
2305 arch_eh_jit_info_size = 0;
2308 MonoJitExceptionInfo *clauses;
2312 * Part of the info is encoded by the AOT compiler, the rest is in the .eh_frame
2315 clauses = g_new0 (MonoJitExceptionInfo, num_clauses);
2316 nesting = g_new0 (GSList*, num_clauses);
2318 for (i = 0; i < num_clauses; ++i) {
2319 MonoJitExceptionInfo *ei = &clauses [i];
2321 ei->flags = decode_value (p, &p);
2323 if (decode_value (p, &p))
2324 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
2326 /* Read the list of nesting clauses */
2328 int nesting_index = decode_value (p, &p);
2329 if (nesting_index == -1)
2331 nesting [i] = g_slist_prepend (nesting [i], GINT_TO_POINTER (nesting_index));
2335 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);
2336 jinfo->from_llvm = 1;
2339 for (i = 0; i < num_clauses; ++i)
2340 g_slist_free (nesting [i]);
2344 mono_domain_alloc0 (domain, MONO_SIZEOF_JIT_INFO + (sizeof (MonoJitExceptionInfo) * num_clauses) + generic_info_size + try_holes_info_size + arch_eh_jit_info_size);
2345 jinfo->num_clauses = num_clauses;
2347 for (i = 0; i < jinfo->num_clauses; ++i) {
2348 MonoJitExceptionInfo *ei = &jinfo->clauses [i];
2350 ei->flags = decode_value (p, &p);
2352 ei->exvar_offset = decode_value (p, &p);
2354 if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER || ei->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
2355 ei->data.filter = code + decode_value (p, &p);
2357 if (decode_value (p, &p))
2358 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
2361 ei->try_start = code + decode_value (p, &p);
2362 ei->try_end = code + decode_value (p, &p);
2363 ei->handler_start = code + decode_value (p, &p);
2366 jinfo->code_size = code_len;
2367 jinfo->used_regs = used_int_regs;
2368 jinfo->method = method;
2369 jinfo->code_start = code;
2370 jinfo->domain_neutral = 0;
2371 jinfo->from_aot = 1;
2374 if (has_generic_jit_info) {
2375 MonoGenericJitInfo *gi;
2377 jinfo->has_generic_jit_info = 1;
2379 gi = mono_jit_info_get_generic_jit_info (jinfo);
2382 gi->nlocs = decode_value (p, &p);
2384 gi->locations = mono_domain_alloc0 (domain, gi->nlocs * sizeof (MonoDwarfLocListEntry));
2385 for (i = 0; i < gi->nlocs; ++i) {
2386 MonoDwarfLocListEntry *entry = &gi->locations [i];
2388 entry->is_reg = decode_value (p, &p);
2389 entry->reg = decode_value (p, &p);
2391 entry->offset = decode_value (p, &p);
2393 entry->from = decode_value (p, &p);
2394 entry->to = decode_value (p, &p);
2398 gi->has_this = this_reg != -1;
2399 gi->this_reg = this_reg;
2400 gi->this_offset = this_offset;
2402 gi->has_this = decode_value (p, &p);
2403 gi->this_reg = decode_value (p, &p);
2404 gi->this_offset = decode_value (p, &p);
2408 jinfo->method = decode_resolve_method_ref (amodule, p, &p);
2410 gi->generic_sharing_context = g_new0 (MonoGenericSharingContext, 1);
2411 if (decode_value (p, &p)) {
2414 MonoGenericSharingContext *gsctx = gi->generic_sharing_context;
2416 n = decode_value (p, &p);
2418 gsctx->var_is_vt = g_new0 (gboolean, n);
2419 for (i = 0; i < n; ++i)
2420 gsctx->var_is_vt [i] = decode_value (p, &p);
2422 n = decode_value (p, &p);
2424 gsctx->mvar_is_vt = g_new0 (gboolean, n);
2425 for (i = 0; i < n; ++i)
2426 gsctx->mvar_is_vt [i] = decode_value (p, &p);
2431 if (has_try_block_holes) {
2432 MonoTryBlockHoleTableJitInfo *table;
2434 jinfo->has_try_block_holes = 1;
2436 table = mono_jit_info_get_try_block_hole_table_info (jinfo);
2439 table->num_holes = (guint16)num_holes;
2440 for (i = 0; i < num_holes; ++i) {
2441 MonoTryBlockHoleJitInfo *hole = &table->holes [i];
2442 hole->clause = decode_value (p, &p);
2443 hole->length = decode_value (p, &p);
2444 hole->offset = decode_value (p, &p);
2448 if (has_arch_eh_jit_info) {
2449 MonoArchEHJitInfo *eh_info;
2451 jinfo->has_arch_eh_info = 1;
2453 eh_info = mono_jit_info_get_arch_eh_info (jinfo);
2454 eh_info->stack_size = decode_value (p, &p);
2457 if (has_seq_points) {
2458 MonoSeqPointInfo *seq_points;
2459 int il_offset, native_offset, last_il_offset, last_native_offset, j;
2461 int len = decode_value (p, &p);
2463 seq_points = g_malloc0 (sizeof (MonoSeqPointInfo) + (len - MONO_ZERO_LEN_ARRAY) * sizeof (SeqPoint));
2464 seq_points->len = len;
2465 last_il_offset = last_native_offset = 0;
2466 for (i = 0; i < len; ++i) {
2467 SeqPoint *sp = &seq_points->seq_points [i];
2468 il_offset = last_il_offset + decode_value (p, &p);
2469 native_offset = last_native_offset + decode_value (p, &p);
2471 sp->il_offset = il_offset;
2472 sp->native_offset = native_offset;
2474 sp->next_len = decode_value (p, &p);
2475 sp->next = g_new (int, sp->next_len);
2476 for (j = 0; j < sp->next_len; ++j)
2477 sp->next [j] = decode_value (p, &p);
2479 last_il_offset = il_offset;
2480 last_native_offset = native_offset;
2483 mono_domain_lock (domain);
2484 g_hash_table_insert (domain_jit_info (domain)->seq_points, method, seq_points);
2485 mono_domain_unlock (domain);
2488 /* Load debug info */
2489 buf_len = decode_value (p, &p);
2490 mono_debug_add_aot_method (domain, method, code, p, buf_len);
2494 int map_size = decode_value (p, &p);
2495 /* The GC map requires 4 bytes of alignment */
2496 while ((guint64)(gsize)p % 4)
2502 if (amodule != jinfo->method->klass->image->aot_module) {
2505 ji_to_amodule = g_hash_table_new (NULL, NULL);
2506 g_hash_table_insert (ji_to_amodule, jinfo, amodule);
2514 * mono_aot_get_unwind_info:
2516 * Return a pointer to the DWARF unwind info belonging to JI.
2519 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
2521 MonoAotModule *amodule = ji->method->klass->image->aot_module;
2523 guint8 *code = ji->code_start;
2526 g_assert (ji->from_aot);
2528 if (!(code >= amodule->code && code <= amodule->code_end)) {
2529 /* ji belongs to a different aot module than amodule */
2531 g_assert (ji_to_amodule);
2532 amodule = g_hash_table_lookup (ji_to_amodule, ji);
2534 g_assert (code >= amodule->code && code <= amodule->code_end);
2538 p = amodule->unwind_info + ji->used_regs;
2539 *unwind_info_len = decode_value (p, &p);
2543 static G_GNUC_UNUSED int
2544 compare_ints (const void *a, const void *b)
2546 return *(gint32*)a - *(gint32*)b;
2550 msort_code_offsets_internal (gint32 *array, int lo, int hi, gint32 *scratch)
2552 int mid = (lo + hi) / 2;
2559 for (i = lo; i < hi; ++i)
2560 if (array [(i * 2)] > array [(i * 2) + 2])
2563 /* Already sorted */
2567 msort_code_offsets_internal (array, lo, mid, scratch);
2568 msort_code_offsets_internal (array, mid + 1, hi, scratch);
2570 if (array [mid * 2] < array [(mid + 1) * 2])
2576 for (i = lo; i <= hi; i ++) {
2577 if (t_lo <= mid && ((t_hi > hi) || array [t_lo * 2] < array [t_hi * 2])) {
2578 scratch [(i * 2)] = array [t_lo * 2];
2579 scratch [(i * 2) + 1] = array [(t_lo *2) + 1];
2582 scratch [(i * 2)] = array [t_hi * 2];
2583 scratch [(i * 2) + 1] = array [(t_hi *2) + 1];
2587 for (i = lo; i <= hi; ++i) {
2588 array [(i * 2)] = scratch [i * 2];
2589 array [(i * 2) + 1] = scratch [(i * 2) + 1];
2594 msort_code_offsets (gint32 *array, int len)
2598 scratch = g_new (gint32, len * 2);
2599 msort_code_offsets_internal (array, 0, len - 1, scratch);
2604 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
2606 int pos, left, right, offset, offset1, offset2, code_len;
2607 int method_index, table_len;
2609 MonoAotModule *amodule = image->aot_module;
2612 guint8 *code, *ex_info, *p;
2614 int nmethods = amodule->info.nmethods;
2615 gint32 *code_offsets;
2621 if (domain != mono_get_root_domain ())
2625 offset = (guint8*)addr - amodule->code;
2627 /* Compute a sorted table mapping code offsets to method indexes. */
2628 if (!amodule->sorted_code_offsets) {
2629 code_offsets = g_new0 (gint32, nmethods * 2);
2631 for (i = 0; i < nmethods; ++i) {
2632 /* Skip the -1 entries to speed up sorting */
2633 if (amodule->code_offsets [i] == 0xffffffff)
2635 code_offsets [(offsets_len * 2)] = amodule->code_offsets [i];
2636 code_offsets [(offsets_len *2) + 1] = i;
2639 /* Use a merge sort as this is mostly sorted */
2640 msort_code_offsets (code_offsets, offsets_len);
2641 //qsort (code_offsets, offsets_len, sizeof (gint32) * 2, compare_ints);
2642 for (i = 0; i < offsets_len -1; ++i)
2643 g_assert (code_offsets [(i * 2)] <= code_offsets [(i + 1) * 2]);
2645 amodule->sorted_code_offsets_len = offsets_len;
2646 mono_memory_barrier ();
2647 if (InterlockedCompareExchangePointer ((gpointer*)&amodule->sorted_code_offsets, code_offsets, NULL) != NULL)
2648 /* Somebody got in before us */
2649 g_free (code_offsets);
2652 code_offsets = amodule->sorted_code_offsets;
2653 offsets_len = amodule->sorted_code_offsets_len;
2655 if (offsets_len > 0 && (offset < code_offsets [0] || offset >= (amodule->code_end - amodule->code)))
2658 /* Binary search in the sorted_code_offsets table */
2660 right = offsets_len;
2662 pos = (left + right) / 2;
2664 offset1 = code_offsets [(pos * 2)];
2665 if (pos + 1 == offsets_len)
2666 offset2 = amodule->code_end - amodule->code;
2668 offset2 = code_offsets [(pos + 1) * 2];
2670 if (offset < offset1)
2672 else if (offset >= offset2)
2678 g_assert (offset >= code_offsets [(pos * 2)]);
2679 if (pos + 1 < offsets_len)
2680 g_assert (offset < code_offsets [((pos + 1) * 2)]);
2681 method_index = code_offsets [(pos * 2) + 1];
2683 code = &amodule->code [amodule->code_offsets [method_index]];
2684 ex_info = &amodule->blob [mono_aot_get_offset (amodule->ex_info_offsets, method_index)];
2686 if (pos == offsets_len - 1)
2687 code_len = amodule->code_end - code;
2689 code_len = code_offsets [(pos + 1) * 2] - code_offsets [pos * 2];
2691 g_assert ((guint8*)code <= (guint8*)addr && (guint8*)addr < (guint8*)code + code_len);
2693 /* Might be a wrapper/extra method */
2694 if (amodule->extra_methods) {
2696 method = g_hash_table_lookup (amodule->extra_methods, GUINT_TO_POINTER (method_index));
2703 if (method_index >= image->tables [MONO_TABLE_METHOD].rows) {
2705 * This is hit for extra methods which are called directly, so they are
2706 * not in amodule->extra_methods.
2708 table_len = amodule->extra_method_info_offsets [0];
2709 table = amodule->extra_method_info_offsets + 1;
2716 pos = ((left + right) / 2);
2718 g_assert (pos < table_len);
2720 if (table [pos * 2] < method_index)
2722 else if (table [pos * 2] > method_index)
2728 p = amodule->blob + table [(pos * 2) + 1];
2729 method = decode_resolve_method_ref (amodule, p, &p);
2731 /* Happens when a random address is passed in which matches a not-yey called wrapper encoded using its name */
2734 token = mono_metadata_make_token (MONO_TABLE_METHOD, method_index + 1);
2735 method = mono_get_method (image, token, NULL);
2742 //printf ("F: %s\n", mono_method_full_name (method, TRUE));
2744 jinfo = decode_exception_debug_info (amodule, domain, method, ex_info, addr, code, code_len);
2746 g_assert ((guint8*)addr >= (guint8*)jinfo->code_start);
2747 g_assert ((guint8*)addr < (guint8*)jinfo->code_start + jinfo->code_size);
2749 /* Add it to the normal JitInfo tables */
2750 mono_jit_info_table_add (domain, jinfo);
2756 decode_patch (MonoAotModule *aot_module, MonoMemPool *mp, MonoJumpInfo *ji, guint8 *buf, guint8 **endbuf)
2764 case MONO_PATCH_INFO_METHOD:
2765 case MONO_PATCH_INFO_METHOD_JUMP:
2766 case MONO_PATCH_INFO_ICALL_ADDR:
2767 case MONO_PATCH_INFO_METHOD_RGCTX: {
2771 res = decode_method_ref (aot_module, &ref, p, &p);
2775 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)) {
2776 ji->data.target = mono_create_ftnptr (mono_domain_get (), mono_create_jit_trampoline_from_token (ref.image, ref.token));
2777 ji->type = MONO_PATCH_INFO_ABS;
2781 ji->data.method = ref.method;
2783 ji->data.method = mono_get_method (ref.image, ref.token, NULL);
2784 g_assert (ji->data.method);
2785 mono_class_init (ji->data.method->klass);
2789 case MONO_PATCH_INFO_INTERNAL_METHOD:
2790 case MONO_PATCH_INFO_JIT_ICALL_ADDR: {
2791 guint32 len = decode_value (p, &p);
2793 ji->data.name = (char*)p;
2797 case MONO_PATCH_INFO_METHODCONST:
2799 ji->data.method = decode_resolve_method_ref (aot_module, p, &p);
2800 if (!ji->data.method)
2803 case MONO_PATCH_INFO_VTABLE:
2804 case MONO_PATCH_INFO_CLASS:
2805 case MONO_PATCH_INFO_IID:
2806 case MONO_PATCH_INFO_ADJUSTED_IID:
2808 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2809 if (!ji->data.klass)
2812 case MONO_PATCH_INFO_CLASS_INIT:
2813 case MONO_PATCH_INFO_DELEGATE_TRAMPOLINE:
2814 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2815 if (!ji->data.klass)
2818 case MONO_PATCH_INFO_IMAGE:
2819 ji->data.image = load_image (aot_module, decode_value (p, &p), TRUE);
2820 if (!ji->data.image)
2823 case MONO_PATCH_INFO_FIELD:
2824 case MONO_PATCH_INFO_SFLDA:
2826 ji->data.field = decode_field_info (aot_module, p, &p);
2827 if (!ji->data.field)
2830 case MONO_PATCH_INFO_SWITCH:
2831 ji->data.table = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoBBTable));
2832 ji->data.table->table_size = decode_value (p, &p);
2833 table = mono_domain_alloc (mono_domain_get (), sizeof (gpointer) * ji->data.table->table_size);
2834 ji->data.table->table = (MonoBasicBlock**)table;
2835 for (i = 0; i < ji->data.table->table_size; i++)
2836 table [i] = (gpointer)(gssize)decode_value (p, &p);
2838 case MONO_PATCH_INFO_R4: {
2841 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (float));
2842 val = decode_value (p, &p);
2843 *(float*)ji->data.target = *(float*)&val;
2846 case MONO_PATCH_INFO_R8: {
2850 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (double));
2852 val [0] = decode_value (p, &p);
2853 val [1] = decode_value (p, &p);
2854 v = ((guint64)val [1] << 32) | ((guint64)val [0]);
2855 *(double*)ji->data.target = *(double*)&v;
2858 case MONO_PATCH_INFO_LDSTR:
2859 image = load_image (aot_module, decode_value (p, &p), TRUE);
2862 ji->data.token = mono_jump_info_token_new (mp, image, MONO_TOKEN_STRING + decode_value (p, &p));
2864 case MONO_PATCH_INFO_RVA:
2865 case MONO_PATCH_INFO_DECLSEC:
2866 case MONO_PATCH_INFO_LDTOKEN:
2867 case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
2869 image = load_image (aot_module, decode_value (p, &p), TRUE);
2872 ji->data.token = mono_jump_info_token_new (mp, image, decode_value (p, &p));
2874 ji->data.token->has_context = decode_value (p, &p);
2875 if (ji->data.token->has_context) {
2876 gboolean res = decode_generic_context (aot_module, &ji->data.token->context, p, &p);
2881 case MONO_PATCH_INFO_EXC_NAME:
2882 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2883 if (!ji->data.klass)
2885 ji->data.name = ji->data.klass->name;
2887 case MONO_PATCH_INFO_METHOD_REL:
2888 ji->data.offset = decode_value (p, &p);
2890 case MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG:
2891 case MONO_PATCH_INFO_GENERIC_CLASS_INIT:
2892 case MONO_PATCH_INFO_MONITOR_ENTER:
2893 case MONO_PATCH_INFO_MONITOR_EXIT:
2894 case MONO_PATCH_INFO_GC_CARD_TABLE_ADDR:
2895 case MONO_PATCH_INFO_CASTCLASS_CACHE:
2896 case MONO_PATCH_INFO_JIT_TLS_ID:
2898 case MONO_PATCH_INFO_RGCTX_FETCH: {
2900 MonoJumpInfoRgctxEntry *entry;
2901 guint32 offset, val;
2904 offset = decode_value (p, &p);
2905 val = decode_value (p, &p);
2907 entry = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
2908 p2 = aot_module->blob + offset;
2909 entry->method = decode_resolve_method_ref (aot_module, p2, &p2);
2910 entry->in_mrgctx = ((val & 1) > 0) ? TRUE : FALSE;
2911 entry->info_type = (val >> 1) & 0xff;
2912 entry->data = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
2913 entry->data->type = (val >> 9) & 0xff;
2915 res = decode_patch (aot_module, mp, entry->data, p, &p);
2918 ji->data.rgctx_entry = entry;
2921 case MONO_PATCH_INFO_SEQ_POINT_INFO:
2923 case MONO_PATCH_INFO_LLVM_IMT_TRAMPOLINE: {
2924 MonoJumpInfoImtTramp *imt_tramp = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoImtTramp));
2926 imt_tramp->method = decode_resolve_method_ref (aot_module, p, &p);
2927 imt_tramp->vt_offset = decode_value (p, &p);
2929 ji->data.imt_tramp = imt_tramp;
2932 case MONO_PATCH_INFO_SIGNATURE:
2933 ji->data.target = decode_signature (aot_module, p, &p);
2935 case MONO_PATCH_INFO_GSHAREDVT_CALL: {
2936 MonoJumpInfoGSharedVtCall *info = g_new0 (MonoJumpInfoGSharedVtCall, 1);
2937 info->sig = decode_signature (aot_module, p, &p);
2938 g_assert (info->sig);
2939 info->method = decode_resolve_method_ref (aot_module, p, &p);
2940 g_assert (info->method);
2942 ji->data.target = info;
2946 g_warning ("unhandled type %d", ji->type);
2947 g_assert_not_reached ();
2958 static MonoJumpInfo*
2959 load_patch_info (MonoAotModule *aot_module, MonoMemPool *mp, int n_patches,
2960 guint32 **got_slots,
2961 guint8 *buf, guint8 **endbuf)
2963 MonoJumpInfo *patches;
2969 patches = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo) * n_patches);
2971 *got_slots = g_malloc (sizeof (guint32) * n_patches);
2973 for (pindex = 0; pindex < n_patches; ++pindex) {
2974 MonoJumpInfo *ji = &patches [pindex];
2979 got_offset = decode_value (p, &p);
2981 if (aot_module->got [got_offset]) {
2982 /* Already loaded */
2983 //printf ("HIT!\n");
2985 shared_p = aot_module->blob + mono_aot_get_offset (aot_module->got_info_offsets, got_offset);
2987 ji->type = decode_value (shared_p, &shared_p);
2989 res = decode_patch (aot_module, mp, ji, shared_p, &shared_p);
2994 (*got_slots) [pindex] = got_offset;
3001 g_free (*got_slots);
3008 register_jump_target_got_slot (MonoDomain *domain, MonoMethod *method, gpointer *got_slot)
3011 * Jump addresses cannot be patched by the trampoline code since it
3012 * does not have access to the caller's address. Instead, we collect
3013 * the addresses of the GOT slots pointing to a method, and patch
3014 * them after the method has been compiled.
3016 MonoJitDomainInfo *info = domain_jit_info (domain);
3019 mono_domain_lock (domain);
3020 if (!info->jump_target_got_slot_hash)
3021 info->jump_target_got_slot_hash = g_hash_table_new (NULL, NULL);
3022 list = g_hash_table_lookup (info->jump_target_got_slot_hash, method);
3023 list = g_slist_prepend (list, got_slot);
3024 g_hash_table_insert (info->jump_target_got_slot_hash, method, list);
3025 mono_domain_unlock (domain);
3031 * Load the method identified by METHOD_INDEX from the AOT image. Return a
3032 * pointer to the native code of the method, or NULL if not found.
3033 * METHOD might not be set if the caller only has the image/token info.
3036 load_method (MonoDomain *domain, MonoAotModule *amodule, MonoImage *image, MonoMethod *method, guint32 token, int method_index)
3039 gboolean from_plt = method == NULL;
3041 int i, pindex, n_patches, used_strings;
3042 gboolean keep_patches = TRUE;
3044 MonoJitInfo *jinfo = NULL;
3045 guint8 *code, *info;
3047 if (mono_profiler_get_events () & MONO_PROFILE_ENTER_LEAVE)
3050 if ((domain != mono_get_root_domain ()) && (!(amodule->info.opts & MONO_OPT_SHARED)))
3051 /* Non shared AOT code can't be used in other appdomains */
3054 if (amodule->out_of_date)
3057 if (amodule->code_offsets [method_index] == 0xffffffff) {
3058 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
3062 method = mono_get_method (image, token, NULL);
3063 full_name = mono_method_full_name (method, TRUE);
3064 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.", full_name);
3070 code = &amodule->code [amodule->code_offsets [method_index]];
3072 info = &amodule->blob [mono_aot_get_offset (amodule->method_info_offsets, method_index)];
3074 if (amodule->thumb_end && code < amodule->thumb_end && ((amodule->info.flags & MONO_AOT_FILE_FLAG_DIRECT_METHOD_ADDRESSES) == 0)) {
3075 /* Convert this into a thumb address */
3076 g_assert ((amodule->code_offsets [method_index] & 0x1) == 0);
3077 code = &amodule->code [amodule->code_offsets [method_index] + 1];
3081 if (!amodule->methods_loaded)
3082 amodule->methods_loaded = g_new0 (guint32, amodule->info.nmethods / 32 + 1);
3085 if ((amodule->methods_loaded [method_index / 32] >> (method_index % 32)) & 0x1)
3088 if (mono_last_aot_method != -1) {
3089 if (mono_jit_stats.methods_aot >= mono_last_aot_method)
3091 else if (mono_jit_stats.methods_aot == mono_last_aot_method - 1) {
3093 method = mono_get_method (image, token, NULL);
3095 char *name = mono_method_full_name (method, TRUE);
3096 printf ("LAST AOT METHOD: %s.\n", name);
3099 printf ("LAST AOT METHOD: %p %d\n", code, method_index);
3107 klass = method->klass;
3108 decode_klass_ref (amodule, p, &p);
3110 klass = decode_klass_ref (amodule, p, &p);
3113 if (amodule->info.opts & MONO_OPT_SHARED)
3114 used_strings = decode_value (p, &p);
3118 for (i = 0; i < used_strings; i++) {
3119 guint token = decode_value (p, &p);
3120 mono_ldstr (mono_get_root_domain (), image, mono_metadata_token_index (token));
3123 if (amodule->info.opts & MONO_OPT_SHARED)
3124 keep_patches = FALSE;
3126 n_patches = decode_value (p, &p);
3128 keep_patches = FALSE;
3131 MonoJumpInfo *patches;
3137 mp = mono_mempool_new ();
3139 patches = load_patch_info (amodule, mp, n_patches, &got_slots, p, &p);
3140 if (patches == NULL)
3143 for (pindex = 0; pindex < n_patches; ++pindex) {
3144 MonoJumpInfo *ji = &patches [pindex];
3146 if (!amodule->got [got_slots [pindex]]) {
3147 amodule->got [got_slots [pindex]] = mono_resolve_patch_target (method, domain, code, ji, TRUE);
3148 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
3149 amodule->got [got_slots [pindex]] = mono_create_ftnptr (domain, amodule->got [got_slots [pindex]]);
3150 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
3151 register_jump_target_got_slot (domain, ji->data.method, &(amodule->got [got_slots [pindex]]));
3153 ji->type = MONO_PATCH_INFO_NONE;
3159 mono_mempool_destroy (mp);
3162 if (mini_get_debug_options ()->load_aot_jit_info_eagerly)
3163 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
3165 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
3169 method = mono_get_method (image, token, NULL);
3171 full_name = mono_method_full_name (method, TRUE);
3174 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
3176 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT FOUND method %s [%p - %p %p]", full_name, code, code + jinfo->code_size, info);
3182 InterlockedIncrement (&mono_jit_stats.methods_aot);
3184 amodule->methods_loaded [method_index / 32] |= 1 << (method_index % 32);
3188 if (method && method->wrapper_type)
3189 g_hash_table_insert (amodule->method_to_code, method, code);
3193 if (mono_profiler_get_events () & MONO_PROFILE_JIT_COMPILATION) {
3197 method = mono_get_method (image, token, NULL);
3200 mono_profiler_method_jit (method);
3201 jinfo = mono_jit_info_table_find (domain, (char*)code);
3203 mono_profiler_method_end_jit (method, jinfo, MONO_PROFILE_OK);
3206 if (from_plt && klass && !klass->generic_container)
3207 mono_runtime_class_init (mono_class_vtable (domain, klass));
3212 /* FIXME: The space in domain->mp is wasted */
3213 if (amodule->info.opts & MONO_OPT_SHARED)
3214 /* No need to cache patches */
3215 mono_mempool_destroy (mp);
3224 find_extra_method_in_amodule (MonoAotModule *amodule, MonoMethod *method)
3226 guint32 table_size, entry_size, hash;
3227 guint32 *table, *entry;
3229 static guint32 n_extra_decodes;
3231 if (!amodule || amodule->out_of_date)
3234 table_size = amodule->extra_method_table [0];
3235 table = amodule->extra_method_table + 1;
3238 hash = mono_aot_method_hash (method) % table_size;
3240 entry = &table [hash * entry_size];
3247 guint32 key = entry [0];
3248 guint32 value = entry [1];
3249 guint32 next = entry [entry_size - 1];
3253 p = amodule->blob + key;
3257 if (!amodule->method_ref_to_method)
3258 amodule->method_ref_to_method = g_hash_table_new (NULL, NULL);
3259 m = g_hash_table_lookup (amodule->method_ref_to_method, p);
3262 m = decode_resolve_method_ref_with_target (amodule, method, p, &p);
3265 g_hash_table_insert (amodule->method_ref_to_method, orig_p, m);
3274 /* Special case: wrappers of shared generic methods */
3275 if (m && method->wrapper_type && m->wrapper_type == m->wrapper_type &&
3276 method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
3277 MonoMethod *w1 = mono_marshal_method_from_wrapper (method);
3278 MonoMethod *w2 = mono_marshal_method_from_wrapper (m);
3280 if (w1->is_inflated && ((MonoMethodInflated *)w1)->declaring == w2) {
3286 /* Methods decoded needlessly */
3288 //printf ("%d %s %s %p\n", n_extra_decodes, mono_method_full_name (method, TRUE), mono_method_full_name (m, TRUE), orig_p);
3293 entry = &table [next * entry_size];
3302 add_module_cb (gpointer key, gpointer value, gpointer user_data)
3304 g_ptr_array_add ((GPtrArray*)user_data, value);
3308 * find_extra_method:
3310 * Try finding METHOD in the extra_method table in all AOT images.
3311 * Return its method index, or 0xffffff if not found. Set OUT_AMODULE to the AOT
3312 * module where the method was found.
3315 find_extra_method (MonoMethod *method, MonoAotModule **out_amodule)
3321 /* Try the method's module first */
3322 *out_amodule = method->klass->image->aot_module;
3323 index = find_extra_method_in_amodule (method->klass->image->aot_module, method);
3324 if (index != 0xffffff)
3328 * Try all other modules.
3329 * This is needed because generic instances klass->image points to the image
3330 * containing the generic definition, but the native code is generated to the
3331 * AOT image which contains the reference.
3334 /* Make a copy to avoid doing the search inside the aot lock */
3335 modules = g_ptr_array_new ();
3337 g_hash_table_foreach (aot_modules, add_module_cb, modules);
3341 for (i = 0; i < modules->len; ++i) {
3342 MonoAotModule *amodule = g_ptr_array_index (modules, i);
3344 if (amodule != method->klass->image->aot_module)
3345 index = find_extra_method_in_amodule (amodule, method);
3346 if (index != 0xffffff) {
3347 *out_amodule = amodule;
3352 g_ptr_array_free (modules, TRUE);
3358 * mono_aot_get_method:
3360 * Return a pointer to the AOTed native code for METHOD if it can be found,
3362 * On platforms with function pointers, this doesn't return a function pointer.
3365 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
3367 MonoClass *klass = method->klass;
3368 guint32 method_index;
3369 MonoAotModule *amodule = klass->image->aot_module;
3375 if (amodule->out_of_date)
3378 if ((method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
3379 (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
3380 (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
3381 (method->flags & METHOD_ATTRIBUTE_ABSTRACT))
3385 * Use the original method instead of its invoke-with-check wrapper.
3386 * This is not a problem when using full-aot, since it doesn't support
3389 if (mono_aot_only && method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)
3390 return mono_aot_get_method (domain, mono_marshal_method_from_wrapper (method));
3392 g_assert (klass->inited);
3394 /* Find method index */
3395 if (method->is_inflated && !method->wrapper_type && mono_method_is_generic_sharable_impl_full (method, FALSE, FALSE, FALSE)) {
3397 * For generic methods, we store the fully shared instance in place of the
3400 method = mono_method_get_declaring_generic_method (method);
3401 method_index = mono_metadata_token_index (method->token) - 1;
3402 } else if (method->is_inflated || !method->token) {
3403 /* This hash table is used to avoid the slower search in the extra_method_table in the AOT image */
3405 code = g_hash_table_lookup (amodule->method_to_code, method);
3410 method_index = find_extra_method (method, &amodule);
3412 * Special case the ICollection<T> wrappers for arrays, as they cannot
3413 * be statically enumerated, and each wrapper ends up calling the same
3416 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED && method->klass->rank && strstr (method->name, "System.Collections.Generic")) {
3417 MonoMethod *m = mono_aot_get_array_helper_from_wrapper (method);
3419 code = mono_aot_get_method (domain, m);
3421 if (mono_method_needs_static_rgctx_invoke (m, FALSE)) {
3422 code = mono_create_static_rgctx_trampoline (m, mono_create_ftnptr (domain, code));
3423 /* The call above returns an ftnptr */
3424 code = mono_get_addr_from_ftnptr (code);
3432 * Special case Array.GetGenericValueImpl which is a generic icall.
3433 * Generic sharing currently can't handle it, but the icall returns data using
3434 * an out parameter, so the managed-to-native wrappers can share the same code.
3436 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass == mono_defaults.array_class && !strcmp (method->name, "GetGenericValueImpl")) {
3438 MonoGenericContext ctx;
3439 MonoType *args [16];
3441 if (mono_method_signature (method)->params [1]->type == MONO_TYPE_OBJECT)
3442 /* Avoid recursion */
3445 m = mono_class_get_method_from_name (mono_defaults.array_class, "GetGenericValueImpl", 2);
3448 memset (&ctx, 0, sizeof (ctx));
3449 args [0] = &mono_defaults.object_class->byval_arg;
3450 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
3452 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method (m, &ctx), TRUE, TRUE);
3455 * Get the code for the <object> instantiation which should be emitted into
3456 * the mscorlib aot image by the AOT compiler.
3458 code = mono_aot_get_method (domain, m);
3463 /* Same for CompareExchange<T> and Exchange<T> */
3464 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass->image == mono_defaults.corlib && !strcmp (method->klass->name_space, "System.Threading") && !strcmp (method->klass->name, "Interlocked") && (!strcmp (method->name, "CompareExchange") || !strcmp (method->name, "Exchange")) && MONO_TYPE_IS_REFERENCE (mono_method_signature (method)->params [1])) {
3466 MonoGenericContext ctx;
3467 MonoType *args [16];
3468 gpointer iter = NULL;
3470 while ((m = mono_class_get_methods (method->klass, &iter))) {
3471 if (mono_method_signature (m)->generic_param_count && !strcmp (m->name, method->name))
3476 memset (&ctx, 0, sizeof (ctx));
3477 args [0] = &mono_defaults.object_class->byval_arg;
3478 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
3480 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method (m, &ctx), TRUE, TRUE);
3482 /* Avoid recursion */
3487 * Get the code for the <object> instantiation which should be emitted into
3488 * the mscorlib aot image by the AOT compiler.
3490 code = mono_aot_get_method (domain, m);
3495 if (method_index == 0xffffff && method->is_inflated && mono_method_is_generic_sharable_impl_full (method, FALSE, FALSE, TRUE)) {
3497 /* Use the all-vt shared method since this is what was AOTed */
3498 method_index = find_extra_method (mini_get_shared_method_full (method, TRUE, TRUE), &amodule);
3499 if (method_index != 0xffffff)
3500 method = mini_get_shared_method_full (method, TRUE, FALSE);
3503 if (method_index == 0xffffff) {
3504 if (mono_aot_only && mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
3507 full_name = mono_method_full_name (method, TRUE);
3508 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.\n", full_name);
3514 if (method_index == 0xffffff)
3517 /* Needed by find_jit_info */
3519 if (!amodule->extra_methods)
3520 amodule->extra_methods = g_hash_table_new (NULL, NULL);
3521 g_hash_table_insert (amodule->extra_methods, GUINT_TO_POINTER (method_index), method);
3525 method_index = mono_metadata_token_index (method->token) - 1;
3528 return load_method (domain, amodule, klass->image, method, method->token, method_index);
3532 * Same as mono_aot_get_method, but we try to avoid loading any metadata from the
3536 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
3538 MonoAotModule *aot_module = image->aot_module;
3544 method_index = mono_metadata_token_index (token) - 1;
3546 return load_method (domain, aot_module, image, NULL, token, method_index);
3552 } IsGotEntryUserData;
3555 check_is_got_entry (gpointer key, gpointer value, gpointer user_data)
3557 IsGotEntryUserData *data = (IsGotEntryUserData*)user_data;
3558 MonoAotModule *aot_module = (MonoAotModule*)value;
3560 if (aot_module->got && (data->addr >= (guint8*)(aot_module->got)) && (data->addr < (guint8*)(aot_module->got + aot_module->info.got_size)))
3565 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
3567 IsGotEntryUserData user_data;
3572 user_data.addr = addr;
3573 user_data.res = FALSE;
3575 g_hash_table_foreach (aot_modules, check_is_got_entry, &user_data);
3578 return user_data.res;
3583 MonoAotModule *module;
3584 } FindAotModuleUserData;
3587 find_aot_module_cb (gpointer key, gpointer value, gpointer user_data)
3589 FindAotModuleUserData *data = (FindAotModuleUserData*)user_data;
3590 MonoAotModule *aot_module = (MonoAotModule*)value;
3592 if ((data->addr >= (guint8*)(aot_module->code)) && (data->addr < (guint8*)(aot_module->code_end)))
3593 data->module = aot_module;
3596 static inline MonoAotModule*
3597 find_aot_module (guint8 *code)
3599 FindAotModuleUserData user_data;
3604 /* Reading these need no locking */
3605 if (((gsize)code < aot_code_low_addr) || ((gsize)code > aot_code_high_addr))
3608 user_data.addr = code;
3609 user_data.module = NULL;
3612 g_hash_table_foreach (aot_modules, find_aot_module_cb, &user_data);
3615 return user_data.module;
3619 mono_aot_patch_plt_entry (guint8 *code, gpointer *got, mgreg_t *regs, guint8 *addr)
3622 * Since AOT code is only used in the root domain,
3623 * mono_domain_get () != mono_get_root_domain () means the calling method
3624 * is AppDomain:InvokeInDomain, so this is the same check as in
3625 * mono_method_same_domain () but without loading the metadata for the method.
3627 if (mono_domain_get () == mono_get_root_domain ())
3628 mono_arch_patch_plt_entry (code, got, regs, addr);
3632 * mono_aot_plt_resolve:
3634 * This function is called by the entries in the PLT to resolve the actual method that
3635 * needs to be called. It returns a trampoline to the method and patches the PLT entry.
3636 * Returns NULL if the something cannot be loaded.
3639 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
3641 #ifdef MONO_ARCH_AOT_SUPPORTED
3642 guint8 *p, *target, *plt_entry;
3644 MonoAotModule *module = (MonoAotModule*)aot_module;
3645 gboolean res, no_ftnptr = FALSE;
3647 gboolean using_gsharedvt = FALSE;
3649 //printf ("DYN: %p %d\n", aot_module, plt_info_offset);
3651 p = &module->blob [plt_info_offset];
3653 ji.type = decode_value (p, &p);
3655 mp = mono_mempool_new_size (512);
3656 res = decode_patch (module, mp, &ji, p, &p);
3659 mono_mempool_destroy (mp);
3663 #ifdef MONO_ARCH_GSHAREDVT_SUPPORTED
3664 using_gsharedvt = TRUE;
3668 * Avoid calling resolve_patch_target in the full-aot case if possible, since
3669 * it would create a trampoline, and we don't need that.
3670 * We could do this only if the method does not need the special handling
3671 * in mono_magic_trampoline ().
3673 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) &&
3674 !mono_method_needs_static_rgctx_invoke (ji.data.method, FALSE) && !using_gsharedvt) {
3675 target = mono_jit_compile_method (ji.data.method);
3678 target = mono_resolve_patch_target (NULL, mono_domain_get (), NULL, &ji, TRUE);
3682 * The trampoline expects us to return a function descriptor on platforms which use
3683 * it, but resolve_patch_target returns a direct function pointer for some type of
3684 * patches, so have to translate between the two.
3685 * FIXME: Clean this up, but how ?
3687 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) {
3688 /* These should already have a function descriptor */
3689 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3690 /* Our function descriptors have a 0 environment, gcc created ones don't */
3691 if (ji.type != MONO_PATCH_INFO_INTERNAL_METHOD && ji.type != MONO_PATCH_INFO_JIT_ICALL_ADDR && ji.type != MONO_PATCH_INFO_ICALL_ADDR)
3692 g_assert (((gpointer*)target) [2] == 0);
3695 } else if (!no_ftnptr) {
3696 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3697 g_assert (((gpointer*)target) [2] != 0);
3699 target = mono_create_ftnptr (mono_domain_get (), target);
3702 mono_mempool_destroy (mp);
3704 /* Patch the PLT entry with target which might be the actual method not a trampoline */
3705 plt_entry = mono_aot_get_plt_entry (code);
3706 g_assert (plt_entry);
3707 mono_aot_patch_plt_entry (plt_entry, module->got, NULL, target);
3711 g_assert_not_reached ();
3719 * Initialize the PLT table of the AOT module. Called lazily when the first AOT
3720 * method in the module is loaded to avoid committing memory by writing to it.
3721 * LOCKING: Assumes the AOT lock is held.
3724 init_plt (MonoAotModule *amodule)
3729 if (amodule->plt_inited)
3732 tramp = mono_create_specific_trampoline (amodule, MONO_TRAMPOLINE_AOT_PLT, mono_get_root_domain (), NULL);
3735 * Initialize the PLT entries in the GOT to point to the default targets.
3738 tramp = mono_create_ftnptr (mono_domain_get (), tramp);
3739 for (i = 1; i < amodule->info.plt_size; ++i)
3740 /* All the default entries point to the AOT trampoline */
3741 ((gpointer*)amodule->got)[amodule->info.plt_got_offset_base + i] = tramp;
3743 amodule->plt_inited = TRUE;
3747 * mono_aot_get_plt_entry:
3749 * Return the address of the PLT entry called by the code at CODE if exists.
3752 mono_aot_get_plt_entry (guint8 *code)
3754 MonoAotModule *amodule = find_aot_module (code);
3755 guint8 *target = NULL;
3761 if (amodule->thumb_end && code < amodule->thumb_end) {
3762 return mono_arm_get_thumb_plt_entry (code);
3766 #ifdef MONO_ARCH_AOT_SUPPORTED
3767 target = mono_arch_get_call_target (code);
3769 g_assert_not_reached ();
3773 while (target != NULL) {
3774 if ((target >= (guint8*)(amodule->plt)) && (target < (guint8*)(amodule->plt_end)))
3777 // Add 4 since mono_arch_get_call_target assumes we're passing
3778 // the instruction after the actual branch instruction.
3779 target = mono_arch_get_call_target (target + 4);
3784 if ((target >= (guint8*)(amodule->plt)) && (target < (guint8*)(amodule->plt_end)))
3792 * mono_aot_get_plt_info_offset:
3794 * Return the PLT info offset belonging to the plt entry called by CODE.
3797 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
3799 guint8 *plt_entry = mono_aot_get_plt_entry (code);
3801 g_assert (plt_entry);
3803 /* The offset is embedded inside the code after the plt entry */
3804 #ifdef MONO_ARCH_AOT_SUPPORTED
3805 return mono_arch_get_plt_info_offset (plt_entry, regs, code);
3807 g_assert_not_reached ();
3813 mono_create_ftnptr_malloc (guint8 *code)
3815 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3816 MonoPPCFunctionDescriptor *ftnptr = g_malloc0 (sizeof (MonoPPCFunctionDescriptor));
3818 ftnptr->code = code;
3829 * mono_aot_register_jit_icall:
3831 * Register a JIT icall which is called by trampolines in full-aot mode. This should
3832 * be called from mono_arch_init () during startup.
3835 mono_aot_register_jit_icall (const char *name, gpointer addr)
3837 /* No need for locking */
3838 if (!aot_jit_icall_hash)
3839 aot_jit_icall_hash = g_hash_table_new (g_str_hash, g_str_equal);
3840 g_hash_table_insert (aot_jit_icall_hash, (char*)name, addr);
3844 * load_function_full:
3846 * Load the function named NAME from the aot image.
3849 load_function_full (MonoAotModule *amodule, const char *name, MonoTrampInfo **out_tinfo)
3853 int n_patches, pindex;
3856 guint32 info_offset;
3860 symbol = g_strdup_printf ("%s", name);
3861 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&code);
3864 g_error ("Symbol '%s' not found in AOT file '%s'.\n", name, amodule->aot_name);
3866 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT FOUND function '%s' in AOT file '%s'.", name, amodule->aot_name);
3870 symbol = g_strdup_printf ("%s_p", name);
3871 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&p);
3874 /* Nothing to patch */
3877 info_offset = *(guint32*)p;
3879 MonoTrampInfo *tinfo;
3880 guint32 code_size, uw_info_len, uw_offset;
3882 /* Construct a MonoTrampInfo from the data in the AOT image */
3884 p += sizeof (guint32);
3885 code_size = *(guint32*)p;
3886 p += sizeof (guint32);
3887 uw_offset = *(guint32*)p;
3888 uw_info = amodule->unwind_info + uw_offset;
3889 uw_info_len = decode_value (uw_info, &uw_info);
3891 tinfo = g_new0 (MonoTrampInfo, 1);
3893 tinfo->code_size = code_size;
3894 tinfo->uw_info = uw_info;
3895 tinfo->uw_info_len = uw_info_len;
3900 p = amodule->blob + info_offset;
3902 /* Similar to mono_aot_load_method () */
3904 n_patches = decode_value (p, &p);
3907 MonoJumpInfo *patches;
3910 mp = mono_mempool_new ();
3912 patches = load_patch_info (amodule, mp, n_patches, &got_slots, p, &p);
3915 for (pindex = 0; pindex < n_patches; ++pindex) {
3916 MonoJumpInfo *ji = &patches [pindex];
3919 if (amodule->got [got_slots [pindex]])
3923 * When this code is executed, the runtime may not be initalized yet, so
3924 * resolve the patch info by hand.
3926 if (ji->type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
3927 if (!strcmp (ji->data.name, "mono_get_lmf_addr")) {
3928 target = mono_get_lmf_addr;
3929 } else if (!strcmp (ji->data.name, "mono_thread_force_interruption_checkpoint")) {
3930 target = mono_thread_force_interruption_checkpoint;
3931 } else if (!strcmp (ji->data.name, "mono_exception_from_token")) {
3932 target = mono_exception_from_token;
3933 } else if (!strcmp (ji->data.name, "mono_throw_exception")) {
3934 target = mono_get_throw_exception ();
3935 } else if (strstr (ji->data.name, "trampoline_func_") == ji->data.name) {
3936 int tramp_type2 = atoi (ji->data.name + strlen ("trampoline_func_"));
3937 target = (gpointer)mono_get_trampoline_func (tramp_type2);
3938 } else if (strstr (ji->data.name, "specific_trampoline_lazy_fetch_") == ji->data.name) {
3939 /* atoll is needed because the the offset is unsigned */
3943 res = sscanf (ji->data.name, "specific_trampoline_lazy_fetch_%u", &slot);
3944 g_assert (res == 1);
3945 target = mono_create_specific_trampoline (GUINT_TO_POINTER (slot), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, mono_get_root_domain (), NULL);
3946 target = mono_create_ftnptr_malloc (target);
3947 } else if (!strcmp (ji->data.name, "specific_trampoline_monitor_enter")) {
3948 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_MONITOR_ENTER, mono_get_root_domain (), NULL);
3949 target = mono_create_ftnptr_malloc (target);
3950 } else if (!strcmp (ji->data.name, "specific_trampoline_monitor_exit")) {
3951 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_MONITOR_EXIT, mono_get_root_domain (), NULL);
3952 target = mono_create_ftnptr_malloc (target);
3953 } else if (!strcmp (ji->data.name, "specific_trampoline_generic_class_init")) {
3954 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_GENERIC_CLASS_INIT, mono_get_root_domain (), NULL);
3955 target = mono_create_ftnptr_malloc (target);
3956 } else if (!strcmp (ji->data.name, "mono_thread_get_and_clear_pending_exception")) {
3957 target = mono_thread_get_and_clear_pending_exception;
3958 } else if (strstr (ji->data.name, "generic_trampoline_")) {
3959 target = mono_aot_get_trampoline (ji->data.name);
3960 } else if (aot_jit_icall_hash && g_hash_table_lookup (aot_jit_icall_hash, ji->data.name)) {
3961 /* Registered by mono_arch_init () */
3962 target = g_hash_table_lookup (aot_jit_icall_hash, ji->data.name);
3964 fprintf (stderr, "Unknown relocation '%s'\n", ji->data.name);
3965 g_assert_not_reached ();
3969 /* Hopefully the code doesn't have patches which need method or
3972 target = mono_resolve_patch_target (NULL, NULL, code, ji, FALSE);
3976 amodule->got [got_slots [pindex]] = target;
3981 mono_mempool_destroy (mp);
3988 load_function (MonoAotModule *amodule, const char *name)
3990 return load_function_full (amodule, name, NULL);
3994 * Return the trampoline identified by NAME from the mscorlib AOT file.
3995 * On ppc64, this returns a function descriptor.
3998 mono_aot_get_trampoline_full (const char *name, MonoTrampInfo **out_tinfo)
4001 MonoAotModule *amodule;
4003 image = mono_defaults.corlib;
4006 amodule = image->aot_module;
4009 return mono_create_ftnptr_malloc (load_function_full (amodule, name, out_tinfo));
4013 mono_aot_get_trampoline (const char *name)
4015 return mono_aot_get_trampoline_full (name, NULL);
4019 #include <mach/mach.h>
4021 static TrampolinePage* trampoline_pages [MONO_AOT_TRAMP_NUM];
4022 /* these sizes are for ARM code, parametrize if porting to other architectures (see arch_emit_specific_trampoline_pages)
4023 * trampoline size is assumed to be 8 bytes below as well (8 is the minimum for 32 bit archs, since we need to store
4024 * two pointers for trampoline in the data page).
4025 * the minimum for the common code must be at least sizeof(TrampolinePage), since we store the page info at the
4026 * beginning of the data page.
4028 static const int trampolines_pages_code_offsets [MONO_AOT_TRAMP_NUM] = {16, 16, 72, 16};
4030 static unsigned char*
4031 get_new_trampoline_from_page (int tramp_type)
4033 MonoAotModule *amodule;
4035 TrampolinePage *page;
4038 vm_address_t addr, taddr;
4040 vm_prot_t prot, max_prot;
4042 unsigned char *code;
4044 mono_aot_page_lock ();
4045 page = trampoline_pages [tramp_type];
4046 if (page && page->trampolines < page->trampolines_end) {
4047 code = page->trampolines;
4048 page->trampolines += 8;
4049 mono_aot_page_unlock ();
4052 mono_aot_page_unlock ();
4053 psize = mono_pagesize ();
4054 /* the trampoline template page is in the mscorlib module */
4055 image = mono_defaults.corlib;
4058 amodule = image->aot_module;
4061 if (tramp_type == MONO_AOT_TRAMP_SPECIFIC)
4062 tpage = load_function (amodule, "specific_trampolines_page");
4063 else if (tramp_type == MONO_AOT_TRAMP_STATIC_RGCTX)
4064 tpage = load_function (amodule, "rgctx_trampolines_page");
4065 else if (tramp_type == MONO_AOT_TRAMP_IMT_THUNK)
4066 tpage = load_function (amodule, "imt_trampolines_page");
4067 else if (tramp_type == MONO_AOT_TRAMP_GSHAREDVT_ARG)
4068 tpage = load_function (amodule, "gsharedvt_arg_trampolines_page");
4070 g_error ("Incorrect tramp type for trampolines page");
4072 /*g_warning ("loaded trampolines page at %x", tpage);*/
4074 /* avoid the unlikely case of looping forever */
4077 while (page == NULL && count-- > 0) {
4079 /* allocate two contiguous pages of memory: the first page will contain the data (like a local constant pool)
4080 * while the second will contain the trampolines.
4082 ret = vm_allocate (mach_task_self (), &addr, psize * 2, VM_FLAGS_ANYWHERE);
4083 if (ret != KERN_SUCCESS) {
4084 g_error ("Cannot allocate memory for trampolines: %d", ret);
4087 /*g_warning ("allocated trampoline double page at %x", addr);*/
4088 /* replace the second page with a remapped trampoline page */
4089 taddr = addr + psize;
4090 vm_deallocate (mach_task_self (), taddr, psize);
4091 ret = vm_remap (mach_task_self (), &taddr, psize, 0, FALSE, mach_task_self(), (vm_address_t)tpage, FALSE, &prot, &max_prot, VM_INHERIT_SHARE);
4092 if (ret != KERN_SUCCESS) {
4093 /* someone else got the page, try again */
4094 vm_deallocate (mach_task_self (), addr, psize);
4097 /*g_warning ("remapped trampoline page at %x", taddr);*/
4099 mono_aot_page_lock ();
4100 page = trampoline_pages [tramp_type];
4101 /* some other thread already allocated, so use that to avoid wasting memory */
4102 if (page && page->trampolines < page->trampolines_end) {
4103 code = page->trampolines;
4104 page->trampolines += 8;
4105 mono_aot_page_unlock ();
4106 vm_deallocate (mach_task_self (), addr, psize);
4107 vm_deallocate (mach_task_self (), taddr, psize);
4110 page = (TrampolinePage*)addr;
4111 page->next = trampoline_pages [tramp_type];
4112 trampoline_pages [tramp_type] = page;
4113 page->trampolines = (void*)(taddr + trampolines_pages_code_offsets [tramp_type]);
4114 page->trampolines_end = (void*)(taddr + psize);
4115 code = page->trampolines;
4116 page->trampolines += 8;
4117 mono_aot_page_unlock ();
4120 g_error ("Cannot allocate more trampoline pages: %d", ret);
4125 static unsigned char*
4126 get_new_trampoline_from_page (int tramp_type)
4128 g_error ("Page trampolines not supported.");
4135 get_new_specific_trampoline_from_page (gpointer tramp, gpointer arg)
4140 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_SPECIFIC);
4142 data = (gpointer*)((char*)code - mono_pagesize ());
4145 /*g_warning ("new trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
4151 get_new_rgctx_trampoline_from_page (gpointer tramp, gpointer arg)
4156 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_STATIC_RGCTX);
4158 data = (gpointer*)((char*)code - mono_pagesize ());
4161 /*g_warning ("new rgctx trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
4167 get_new_imt_trampoline_from_page (gpointer arg)
4172 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_IMT_THUNK);
4174 data = (gpointer*)((char*)code - mono_pagesize ());
4176 /*g_warning ("new imt trampoline at %p for data %p, (stored at %p)", code, arg, data);*/
4182 get_new_gsharedvt_arg_trampoline_from_page (gpointer tramp, gpointer arg)
4187 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_GSHAREDVT_ARG);
4189 data = (gpointer*)((char*)code - mono_pagesize ());
4192 /*g_warning ("new rgctx trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
4196 /* Return a given kind of trampoline */
4198 get_numerous_trampoline (MonoAotTrampoline tramp_type, int n_got_slots, MonoAotModule **out_amodule, guint32 *got_offset, guint32 *out_tramp_size)
4200 MonoAotModule *amodule;
4201 int index, tramp_size;
4204 /* Currently, we keep all trampolines in the mscorlib AOT image */
4205 image = mono_defaults.corlib;
4210 amodule = image->aot_module;
4213 *out_amodule = amodule;
4216 #define MONOTOUCH_TRAMPOLINES_ERROR ". See http://docs.xamarin.com/ios/troubleshooting for instruction on how to fix this condition"
4218 #define MONOTOUCH_TRAMPOLINES_ERROR ""
4220 if (amodule->trampoline_index [tramp_type] == amodule->info.num_trampolines [tramp_type]) {
4221 g_error ("Ran out of trampolines of type %d in '%s' (%d)%s\n",
4222 tramp_type, image->name, amodule->info.num_trampolines [tramp_type], MONOTOUCH_TRAMPOLINES_ERROR);
4224 index = amodule->trampoline_index [tramp_type] ++;
4228 *got_offset = amodule->info.trampoline_got_offset_base [tramp_type] + (index * n_got_slots);
4230 tramp_size = amodule->info.trampoline_size [tramp_type];
4233 *out_tramp_size = tramp_size;
4235 return amodule->trampolines [tramp_type] + (index * tramp_size);
4239 * Return a specific trampoline from the AOT file.
4242 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
4244 MonoAotModule *amodule;
4245 guint32 got_offset, tramp_size;
4246 guint8 *code, *tramp;
4247 static gpointer generic_trampolines [MONO_TRAMPOLINE_NUM];
4248 static gboolean inited;
4249 static guint32 num_trampolines;
4255 mono_counters_register ("Specific trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &num_trampolines);
4264 if (!generic_trampolines [tramp_type]) {
4267 symbol = mono_get_generic_trampoline_name (tramp_type);
4268 generic_trampolines [tramp_type] = mono_aot_get_trampoline (symbol);
4272 tramp = generic_trampolines [tramp_type];
4275 if (USE_PAGE_TRAMPOLINES) {
4276 code = get_new_specific_trampoline_from_page (tramp, arg1);
4279 code = get_numerous_trampoline (MONO_AOT_TRAMP_SPECIFIC, 2, &amodule, &got_offset, &tramp_size);
4281 amodule->got [got_offset] = tramp;
4282 amodule->got [got_offset + 1] = arg1;
4286 *code_len = tramp_size;
4292 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
4294 MonoAotModule *amodule;
4298 if (USE_PAGE_TRAMPOLINES) {
4299 code = get_new_rgctx_trampoline_from_page (addr, ctx);
4301 code = get_numerous_trampoline (MONO_AOT_TRAMP_STATIC_RGCTX, 2, &amodule, &got_offset, NULL);
4303 amodule->got [got_offset] = ctx;
4304 amodule->got [got_offset + 1] = addr;
4307 /* The caller expects an ftnptr */
4308 return mono_create_ftnptr (mono_domain_get (), code);
4312 mono_aot_get_unbox_trampoline (MonoMethod *method)
4314 guint32 method_index = mono_metadata_token_index (method->token) - 1;
4315 MonoAotModule *amodule;
4317 guint32 *ut, *ut_end, *entry;
4318 int low, high, entry_index;
4320 if (method->is_inflated && !mono_method_is_generic_sharable_impl_full (method, FALSE, FALSE, FALSE)) {
4321 method_index = find_extra_method (method, &amodule);
4322 if (method_index == 0xffffff && mono_method_is_generic_sharable_impl_full (method, FALSE, FALSE, TRUE)) {
4323 MonoMethod *shared = mini_get_shared_method_full (method, TRUE, TRUE);
4324 method_index = find_extra_method (shared, &amodule);
4326 g_assert (method_index != 0xffffff);
4328 amodule = method->klass->image->aot_module;
4332 ut = amodule->unbox_trampolines;
4333 ut_end = amodule->unbox_trampolines_end;
4335 /* Do a binary search in the sorted table */
4338 high = (ut_end - ut) / 2;
4339 while (low < high) {
4340 entry_index = (low + high) / 2;
4341 entry = &ut [(entry_index * 2)];
4342 if (entry [0] < method_index) {
4343 low = entry_index + 1;
4344 } else if (entry [0] > method_index) {
4347 if (amodule->info.flags & MONO_AOT_FILE_FLAG_DIRECT_METHOD_ADDRESSES)
4348 code = (gpointer)(gsize)entry [1];
4350 code = amodule->code + entry [1];
4356 /* The caller expects an ftnptr */
4357 return mono_create_ftnptr (mono_domain_get (), code);
4361 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
4365 MonoAotModule *amodule = mono_defaults.corlib->aot_module;
4366 guint32 index = MONO_RGCTX_SLOT_INDEX (slot);
4367 static int count = 0;
4370 if (index >= amodule->info.num_rgctx_fetch_trampolines) {
4371 static gpointer addr;
4375 * Use the general version of the rgctx fetch trampoline. It receives a pair of <slot, trampoline> in the rgctx arg reg.
4378 addr = load_function (amodule, "rgctx_fetch_trampoline_general");
4379 info = mono_domain_alloc0 (mono_get_root_domain (), sizeof (gpointer) * 2);
4380 info [0] = GUINT_TO_POINTER (slot);
4381 info [1] = mono_create_specific_trampoline (GUINT_TO_POINTER (slot), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, mono_get_root_domain (), NULL);
4382 code = mono_aot_get_static_rgctx_trampoline (info, addr);
4383 return mono_create_ftnptr (mono_domain_get (), code);
4386 symbol = mono_get_rgctx_fetch_trampoline_name (slot);
4387 code = load_function (mono_defaults.corlib->aot_module, symbol);
4389 /* The caller expects an ftnptr */
4390 return mono_create_ftnptr (mono_domain_get (), code);
4394 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
4399 int i, index, real_count;
4400 MonoAotModule *amodule;
4403 for (i = 0; i < count; ++i) {
4404 MonoIMTCheckItem *item = imt_entries [i];
4406 if (item->is_equals)
4410 /* Save the entries into an array */
4411 buf = mono_domain_alloc (domain, (real_count + 1) * 2 * sizeof (gpointer));
4413 for (i = 0; i < count; ++i) {
4414 MonoIMTCheckItem *item = imt_entries [i];
4416 if (!item->is_equals)
4419 g_assert (item->key);
4421 buf [(index * 2)] = item->key;
4422 if (item->has_target_code) {
4423 gpointer *p = mono_domain_alloc (domain, sizeof (gpointer));
4424 *p = item->value.target_code;
4425 buf [(index * 2) + 1] = p;
4427 buf [(index * 2) + 1] = &(vtable->vtable [item->value.vtable_slot]);
4431 buf [(index * 2)] = NULL;
4432 buf [(index * 2) + 1] = fail_tramp;
4434 if (USE_PAGE_TRAMPOLINES) {
4435 code = get_new_imt_trampoline_from_page (buf);
4437 code = get_numerous_trampoline (MONO_AOT_TRAMP_IMT_THUNK, 1, &amodule, &got_offset, NULL);
4439 amodule->got [got_offset] = buf;
4446 mono_aot_get_gsharedvt_arg_trampoline (gpointer arg, gpointer addr)
4448 MonoAotModule *amodule;
4452 if (USE_PAGE_TRAMPOLINES) {
4453 code = get_new_gsharedvt_arg_trampoline_from_page (addr, arg);
4455 code = get_numerous_trampoline (MONO_AOT_TRAMP_GSHAREDVT_ARG, 2, &amodule, &got_offset, NULL);
4457 amodule->got [got_offset] = arg;
4458 amodule->got [got_offset + 1] = addr;
4461 /* The caller expects an ftnptr */
4462 return mono_create_ftnptr (mono_domain_get (), code);
4466 * mono_aot_set_make_unreadable:
4468 * Set whenever to make all mmaped memory unreadable. In conjuction with a
4469 * SIGSEGV handler, this is useful to find out which pages the runtime tries to read.
4472 mono_aot_set_make_unreadable (gboolean unreadable)
4476 make_unreadable = unreadable;
4478 if (make_unreadable && !inited) {
4479 mono_counters_register ("AOT pagefaults", MONO_COUNTER_JIT | MONO_COUNTER_INT, &n_pagefaults);
4484 MonoAotModule *module;
4489 find_map (gpointer key, gpointer value, gpointer user_data)
4491 MonoAotModule *module = (MonoAotModule*)value;
4492 FindMapUserData *data = (FindMapUserData*)user_data;
4495 if ((data->ptr >= module->mem_begin) && (data->ptr < module->mem_end))
4496 data->module = module;
4499 static MonoAotModule*
4500 find_module_for_addr (void *ptr)
4502 FindMapUserData data;
4504 if (!make_unreadable)
4508 data.ptr = (guint8*)ptr;
4511 g_hash_table_foreach (aot_modules, (GHFunc)find_map, &data);
4518 * mono_aot_is_pagefault:
4520 * Should be called from a SIGSEGV signal handler to find out whenever @ptr is
4521 * within memory allocated by this module.
4524 mono_aot_is_pagefault (void *ptr)
4526 if (!make_unreadable)
4530 * Not signal safe, but SIGSEGV's are synchronous, and
4531 * this is only turned on by a MONO_DEBUG option.
4533 return find_module_for_addr (ptr) != NULL;
4537 * mono_aot_handle_pagefault:
4539 * Handle a pagefault caused by an unreadable page by making it readable again.
4542 mono_aot_handle_pagefault (void *ptr)
4544 #ifndef PLATFORM_WIN32
4545 guint8* start = (guint8*)ROUND_DOWN (((gssize)ptr), mono_pagesize ());
4549 res = mono_mprotect (start, mono_pagesize (), MONO_MMAP_READ|MONO_MMAP_WRITE|MONO_MMAP_EXEC);
4550 g_assert (res == 0);
4561 mono_aot_init (void)
4566 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
4572 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
4578 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
4584 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
4590 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
4596 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
4602 mono_aot_get_plt_entry (guint8 *code)
4608 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
4614 mono_aot_patch_plt_entry (guint8 *code, gpointer *got, mgreg_t *regs, guint8 *addr)
4619 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
4625 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
4627 g_assert_not_reached ();
4633 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
4635 g_assert_not_reached ();
4640 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
4642 g_assert_not_reached ();
4647 mono_aot_get_trampoline (const char *name)
4649 g_assert_not_reached ();
4654 mono_aot_get_unbox_trampoline (MonoMethod *method)
4656 g_assert_not_reached ();
4661 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
4663 g_assert_not_reached ();
4668 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
4670 g_assert_not_reached ();
4675 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
4677 g_assert_not_reached ();
4682 mono_aot_register_jit_icall (const char *name, gpointer addr)