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_TO(val,align) ((((guint64)val) + ((align) - 1)) & ~((align) - 1))
74 #define ALIGN_PTR_TO(ptr,align) (gpointer)((((gssize)(ptr)) + (align - 1)) & (~(align - 1)))
75 #define ROUND_DOWN(VALUE,SIZE) ((VALUE) & ~((SIZE) - 1))
82 typedef struct MonoAotModule {
84 /* Pointer to the Global Offset Table */
86 GHashTable *name_cache;
87 GHashTable *extra_methods;
88 /* Maps methods to their code */
89 GHashTable *method_to_code;
90 /* Maps pointers into the method info to the methods themselves */
91 GHashTable *method_ref_to_method;
92 MonoAssemblyName *image_names;
94 MonoAssembly *assembly;
95 MonoImage **image_table;
96 guint32 image_table_len;
106 gint32 *code_offsets;
108 gpointer *method_addresses;
110 /* This contains <offset, index> pairs sorted by offset */
111 /* This is needed because LLVM emitted methods can be in any order */
112 gint32 *sorted_code_offsets;
113 gint32 sorted_code_offsets_len;
114 guint32 *method_info_offsets;
115 guint32 *got_info_offsets;
116 guint32 *ex_info_offsets;
117 guint32 *class_info_offsets;
118 guint32 *methods_loaded;
119 guint16 *class_name_table;
120 guint32 *extra_method_table;
121 guint32 *extra_method_info_offsets;
122 guint32 *unbox_trampolines;
123 guint32 *unbox_trampolines_end;
127 /* Points to the mono EH data created by LLVM */
128 guint8 *mono_eh_frame;
130 /* Points to the trampolines */
131 guint8 *trampolines [MONO_AOT_TRAMP_NUM];
132 /* The first unused trampoline of each kind */
133 guint32 trampoline_index [MONO_AOT_TRAMP_NUM];
135 gboolean use_page_trampolines;
137 MonoAotFileInfo info;
142 JitInfoMap *async_jit_info_table;
147 unsigned char *trampolines;
148 unsigned char *trampolines_end;
151 static GHashTable *aot_modules;
152 #define mono_aot_lock() EnterCriticalSection (&aot_mutex)
153 #define mono_aot_unlock() LeaveCriticalSection (&aot_mutex)
154 static CRITICAL_SECTION aot_mutex;
157 * Maps assembly names to the mono_aot_module_<NAME>_info symbols in the
158 * AOT modules registered by mono_aot_register_module ().
160 static GHashTable *static_aot_modules;
163 * Maps MonoJitInfo* to the aot module they belong to, this can be different
164 * from ji->method->klass->image's aot module for generic instances.
166 static GHashTable *ji_to_amodule;
169 * Whenever to AOT compile loaded assemblies on demand and store them in
170 * a cache under $HOME/.mono/aot-cache.
172 static gboolean use_aot_cache = FALSE;
175 * Whenever to spawn a new process to AOT a file or do it in-process. Only relevant if
176 * use_aot_cache is TRUE.
178 static gboolean spawn_compiler = TRUE;
181 static gint32 mono_last_aot_method = -1;
183 static gboolean make_unreadable = FALSE;
184 static guint32 name_table_accesses = 0;
185 static guint32 n_pagefaults = 0;
187 /* Used to speed-up find_aot_module () */
188 static gsize aot_code_low_addr = (gssize)-1;
189 static gsize aot_code_high_addr = 0;
192 static gint32 async_jit_info_size;
194 static GHashTable *aot_jit_icall_hash;
197 #define USE_PAGE_TRAMPOLINES ((MonoAotModule*)mono_defaults.corlib->aot_module)->use_page_trampolines
199 #define USE_PAGE_TRAMPOLINES 0
202 #define mono_aot_page_lock() EnterCriticalSection (&aot_page_mutex)
203 #define mono_aot_page_unlock() LeaveCriticalSection (&aot_page_mutex)
204 static CRITICAL_SECTION aot_page_mutex;
207 init_plt (MonoAotModule *info);
209 /*****************************************************/
211 /*****************************************************/
216 * Load one of the images referenced by AMODULE. Returns NULL if the image is not
217 * found, and sets the loader error if SET_ERROR is TRUE.
220 load_image (MonoAotModule *amodule, int index, gboolean set_error)
222 MonoAssembly *assembly;
223 MonoImageOpenStatus status;
225 g_assert (index < amodule->image_table_len);
227 if (amodule->image_table [index])
228 return amodule->image_table [index];
229 if (amodule->out_of_date)
232 assembly = mono_assembly_load (&amodule->image_names [index], amodule->assembly->basedir, &status);
234 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);
235 amodule->out_of_date = TRUE;
238 char *full_name = mono_stringify_assembly_name (&amodule->image_names [index]);
239 mono_loader_set_error_assembly_load (full_name, FALSE);
245 if (strcmp (assembly->image->guid, amodule->image_guids [index])) {
246 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);
247 amodule->out_of_date = TRUE;
251 amodule->image_table [index] = assembly->image;
252 return assembly->image;
256 decode_value (guint8 *ptr, guint8 **rptr)
261 if ((b & 0x80) == 0){
264 } else if ((b & 0x40) == 0){
265 len = ((b & 0x3f) << 8 | ptr [1]);
267 } else if (b != 0xff) {
268 len = ((b & 0x1f) << 24) |
275 len = (ptr [1] << 24) | (ptr [2] << 16) | (ptr [3] << 8) | ptr [4];
281 //printf ("DECODE: %d.\n", len);
286 * mono_aot_get_offset:
288 * Decode an offset table emitted by emit_offset_table (), returning the INDEXth
292 mono_aot_get_offset (guint32 *table, int index)
294 int i, group, ngroups, index_entry_size;
295 int start_offset, offset, noffsets, group_size;
296 guint8 *data_start, *p;
297 guint32 *index32 = NULL;
298 guint16 *index16 = NULL;
300 noffsets = table [0];
301 group_size = table [1];
303 index_entry_size = table [3];
304 group = index / group_size;
306 if (index_entry_size == 2) {
307 index16 = (guint16*)&table [4];
308 data_start = (guint8*)&index16 [ngroups];
309 p = data_start + index16 [group];
311 index32 = (guint32*)&table [4];
312 data_start = (guint8*)&index32 [ngroups];
313 p = data_start + index32 [group];
316 /* offset will contain the value of offsets [group * group_size] */
317 offset = start_offset = decode_value (p, &p);
318 for (i = group * group_size + 1; i <= index; ++i) {
319 offset += decode_value (p, &p);
322 //printf ("Offset lookup: %d -> %d, start=%d, p=%d\n", index, offset, start_offset, table [3 + group]);
328 decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf);
331 decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf);
334 decode_type (MonoAotModule *module, guint8 *buf, guint8 **endbuf);
336 static MonoGenericInst*
337 decode_generic_inst (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
340 MonoType **type_argv;
341 MonoGenericInst *inst;
344 type_argc = decode_value (p, &p);
345 type_argv = g_new0 (MonoType*, type_argc);
347 for (i = 0; i < type_argc; ++i) {
348 MonoClass *pclass = decode_klass_ref (module, p, &p);
353 type_argv [i] = &pclass->byval_arg;
356 inst = mono_metadata_get_generic_inst (type_argc, type_argv);
365 decode_generic_context (MonoAotModule *module, MonoGenericContext *ctx, guint8 *buf, guint8 **endbuf)
372 argc = decode_value (p, &p);
375 ctx->class_inst = decode_generic_inst (module, p, &p);
376 if (!ctx->class_inst)
380 argc = decode_value (p, &p);
383 ctx->method_inst = decode_generic_inst (module, p, &p);
384 if (!ctx->method_inst)
393 decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
396 MonoClass *klass = NULL, *eklass;
397 guint32 token, rank, idx;
401 reftype = decode_value (p, &p);
408 case MONO_AOT_TYPEREF_TYPEDEF_INDEX:
409 idx = decode_value (p, &p);
410 image = load_image (module, 0, TRUE);
413 klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF + idx);
415 case MONO_AOT_TYPEREF_TYPEDEF_INDEX_IMAGE:
416 idx = decode_value (p, &p);
417 image = load_image (module, decode_value (p, &p), TRUE);
420 klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF + idx);
422 case MONO_AOT_TYPEREF_TYPESPEC_TOKEN:
423 token = decode_value (p, &p);
424 image = module->assembly->image;
427 klass = mono_class_get (image, token);
429 case MONO_AOT_TYPEREF_GINST: {
431 MonoGenericContext ctx;
434 gclass = decode_klass_ref (module, p, &p);
437 g_assert (gclass->generic_container);
439 memset (&ctx, 0, sizeof (ctx));
440 ctx.class_inst = decode_generic_inst (module, p, &p);
443 type = mono_class_inflate_generic_type (&gclass->byval_arg, &ctx);
444 klass = mono_class_from_mono_type (type);
445 mono_metadata_free_type (type);
448 case MONO_AOT_TYPEREF_VAR: {
450 MonoGenericContainer *container = NULL;
451 int type = decode_value (p, &p);
452 int num = decode_value (p, &p);
453 gboolean has_container = decode_value (p, &p);
457 gboolean is_method = decode_value (p, &p);
460 MonoMethod *method_def;
461 g_assert (type == MONO_TYPE_MVAR);
462 method_def = decode_resolve_method_ref (module, p, &p);
466 container = mono_method_get_generic_container (method_def);
468 MonoClass *class_def;
469 g_assert (type == MONO_TYPE_VAR);
470 class_def = decode_klass_ref (module, p, &p);
474 container = class_def->generic_container;
477 serial = decode_value (p, &p);
480 // FIXME: Memory management
481 t = g_new0 (MonoType, 1);
484 t->data.generic_param = mono_generic_container_get_param (container, num);
485 g_assert (serial == 0);
488 MonoGenericParam *par = (MonoGenericParam*)g_new0 (MonoGenericParamFull, 1);
490 par->serial = serial;
492 par->image = mono_defaults.corlib;
493 t->data.generic_param = par;
496 // FIXME: Maybe use types directly to avoid
497 // the overhead of creating MonoClass-es
498 klass = mono_class_from_mono_type (t);
503 case MONO_AOT_TYPEREF_ARRAY:
505 rank = decode_value (p, &p);
506 eklass = decode_klass_ref (module, p, &p);
507 klass = mono_array_class_get (eklass, rank);
509 case MONO_AOT_TYPEREF_PTR: {
512 t = decode_type (module, p, &p);
515 klass = mono_class_from_mono_type (t);
519 case MONO_AOT_TYPEREF_BLOB_INDEX: {
520 guint32 offset = decode_value (p, &p);
523 p2 = module->blob + offset;
524 klass = decode_klass_ref (module, p2, &p2);
528 g_assert_not_reached ();
531 //printf ("BLA: %s\n", mono_type_full_name (&klass->byval_arg));
536 static MonoClassField*
537 decode_field_info (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
539 MonoClass *klass = decode_klass_ref (module, buf, &buf);
546 token = MONO_TOKEN_FIELD_DEF + decode_value (p, &p);
550 return mono_class_get_field (klass, token);
554 * Parse a MonoType encoded by encode_type () in aot-compiler.c. Return malloc-ed
558 decode_type (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
563 t = g_malloc0 (sizeof (MonoType));
566 if (*p == MONO_TYPE_PINNED) {
569 } else if (*p == MONO_TYPE_BYREF) {
582 case MONO_TYPE_BOOLEAN:
596 case MONO_TYPE_STRING:
597 case MONO_TYPE_OBJECT:
598 case MONO_TYPE_TYPEDBYREF:
600 case MONO_TYPE_VALUETYPE:
601 case MONO_TYPE_CLASS:
602 t->data.klass = decode_klass_ref (module, p, &p);
604 case MONO_TYPE_SZARRAY:
605 t->data.klass = decode_klass_ref (module, p, &p);
611 t->data.type = decode_type (module, p, &p);
613 case MONO_TYPE_GENERICINST: {
615 MonoGenericContext ctx;
619 gclass = decode_klass_ref (module, p, &p);
622 g_assert (gclass->generic_container);
624 memset (&ctx, 0, sizeof (ctx));
625 ctx.class_inst = decode_generic_inst (module, p, &p);
628 type = mono_class_inflate_generic_type (&gclass->byval_arg, &ctx);
629 klass = mono_class_from_mono_type (type);
630 t->data.generic_class = klass->generic_class;
633 case MONO_TYPE_ARRAY: {
634 MonoArrayType *array;
637 // FIXME: memory management
638 array = g_new0 (MonoArrayType, 1);
639 array->eklass = decode_klass_ref (module, p, &p);
642 array->rank = decode_value (p, &p);
643 array->numsizes = decode_value (p, &p);
646 array->sizes = g_malloc0 (sizeof (int) * array->numsizes);
647 for (i = 0; i < array->numsizes; ++i)
648 array->sizes [i] = decode_value (p, &p);
650 array->numlobounds = decode_value (p, &p);
651 if (array->numlobounds)
652 array->lobounds = g_malloc0 (sizeof (int) * array->numlobounds);
653 for (i = 0; i < array->numlobounds; ++i)
654 array->lobounds [i] = decode_value (p, &p);
655 t->data.array = array;
659 case MONO_TYPE_MVAR: {
660 MonoClass *klass = decode_klass_ref (module, p, &p);
663 t->data.generic_param = klass->byval_arg.data.generic_param;
667 g_assert_not_reached ();
675 // FIXME: Error handling, memory management
677 static MonoMethodSignature*
678 decode_signature_with_target (MonoAotModule *module, MonoMethodSignature *target, guint8 *buf, guint8 **endbuf)
680 MonoMethodSignature *sig;
682 int i, param_count, call_conv, gen_param_count = 0;
684 gboolean hasthis, explicit_this, has_gen_params;
688 has_gen_params = (flags & 0x10) != 0;
689 hasthis = (flags & 0x20) != 0;
690 explicit_this = (flags & 0x40) != 0;
691 call_conv = flags & 0x0F;
694 gen_param_count = decode_value (p, &p);
695 param_count = decode_value (p, &p);
696 if (target && param_count != target->param_count)
698 sig = g_malloc0 (MONO_SIZEOF_METHOD_SIGNATURE + param_count * sizeof (MonoType *));
699 sig->param_count = param_count;
700 sig->sentinelpos = -1;
701 sig->hasthis = hasthis;
702 sig->explicit_this = explicit_this;
703 sig->call_convention = call_conv;
704 sig->param_count = param_count;
705 sig->ret = decode_type (module, p, &p);
706 for (i = 0; i < param_count; ++i) {
707 if (*p == MONO_TYPE_SENTINEL) {
708 g_assert (sig->call_convention == MONO_CALL_VARARG);
709 sig->sentinelpos = i;
712 sig->params [i] = decode_type (module, p, &p);
715 if (sig->call_convention == MONO_CALL_VARARG && sig->sentinelpos == -1)
716 sig->sentinelpos = sig->param_count;
723 static MonoMethodSignature*
724 decode_signature (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
726 return decode_signature_with_target (module, NULL, buf, endbuf);
730 sig_matches_target (MonoAotModule *module, MonoMethod *target, guint8 *buf, guint8 **endbuf)
732 MonoMethodSignature *sig;
736 sig = decode_signature_with_target (module, mono_method_signature (target), p, &p);
737 res = sig && mono_metadata_signature_equal (mono_method_signature (target), sig);
743 /* Stores information returned by decode_method_ref () */
748 gboolean no_aot_trampoline;
752 * decode_method_ref_with_target:
754 * Decode a method reference, storing the image/token into a MethodRef structure.
755 * This avoids loading metadata for the method if the caller does not need it. If the method has
756 * no token, then it is loaded from metadata and ref->method is set to the method instance.
757 * If TARGET is non-NULL, abort decoding if it can be determined that the decoded method
758 * couldn't resolve to TARGET, and return FALSE.
759 * There are some kinds of method references which only support a non-null TARGET.
760 * This means that its not possible to decode this into a method, only to check
761 * that the method reference matches a given method. This is normally not a problem
762 * as these wrappers only occur in the extra_methods table, where we already have
763 * a method we want to lookup.
766 decode_method_ref_with_target (MonoAotModule *module, MethodRef *ref, MonoMethod *target, guint8 *buf, guint8 **endbuf)
768 guint32 image_index, value;
769 MonoImage *image = NULL;
772 memset (ref, 0, sizeof (MethodRef));
774 value = decode_value (p, &p);
775 image_index = value >> 24;
777 if (image_index == MONO_AOT_METHODREF_NO_AOT_TRAMPOLINE) {
778 ref->no_aot_trampoline = TRUE;
779 value = decode_value (p, &p);
780 image_index = value >> 24;
783 if (image_index < MONO_AOT_METHODREF_MIN || image_index == MONO_AOT_METHODREF_METHODSPEC || image_index == MONO_AOT_METHODREF_GINST) {
784 if (target && target->wrapper_type)
788 if (image_index == MONO_AOT_METHODREF_WRAPPER) {
789 guint32 wrapper_type;
791 wrapper_type = decode_value (p, &p);
793 if (target && target->wrapper_type != wrapper_type)
797 image = mono_defaults.corlib;
799 switch (wrapper_type) {
800 #ifndef DISABLE_REMOTING
801 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK: {
802 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
806 mono_class_init (m->klass);
807 ref->method = mono_marshal_get_remoting_invoke_with_check (m);
810 case MONO_WRAPPER_PROXY_ISINST: {
811 MonoClass *klass = decode_klass_ref (module, p, &p);
814 ref->method = mono_marshal_get_proxy_cancast (klass);
817 case MONO_WRAPPER_LDFLD:
818 case MONO_WRAPPER_LDFLDA:
819 case MONO_WRAPPER_STFLD:
820 case MONO_WRAPPER_ISINST: {
821 MonoClass *klass = decode_klass_ref (module, p, &p);
824 if (wrapper_type == MONO_WRAPPER_LDFLD)
825 ref->method = mono_marshal_get_ldfld_wrapper (&klass->byval_arg);
826 else if (wrapper_type == MONO_WRAPPER_LDFLDA)
827 ref->method = mono_marshal_get_ldflda_wrapper (&klass->byval_arg);
828 else if (wrapper_type == MONO_WRAPPER_STFLD)
829 ref->method = mono_marshal_get_stfld_wrapper (&klass->byval_arg);
830 else if (wrapper_type == MONO_WRAPPER_ISINST)
831 ref->method = mono_marshal_get_isinst (klass);
833 g_assert_not_reached ();
836 case MONO_WRAPPER_LDFLD_REMOTE:
837 ref->method = mono_marshal_get_ldfld_remote_wrapper (NULL);
839 case MONO_WRAPPER_STFLD_REMOTE:
840 ref->method = mono_marshal_get_stfld_remote_wrapper (NULL);
843 case MONO_WRAPPER_ALLOC: {
844 int atype = decode_value (p, &p);
846 ref->method = mono_gc_get_managed_allocator_by_type (atype);
847 g_assert (ref->method);
850 case MONO_WRAPPER_WRITE_BARRIER:
851 ref->method = mono_gc_get_write_barrier ();
853 case MONO_WRAPPER_STELEMREF: {
854 int subtype = decode_value (p, &p);
856 if (subtype == WRAPPER_SUBTYPE_NONE) {
857 ref->method = mono_marshal_get_stelemref ();
858 } else if (subtype == WRAPPER_SUBTYPE_VIRTUAL_STELEMREF) {
862 kind = decode_value (p, &p);
864 /* Can't decode this */
867 if (target->wrapper_type == MONO_WRAPPER_STELEMREF) {
868 info = mono_marshal_get_wrapper_info (target);
871 if (info->subtype == subtype && info->d.virtual_stelemref.kind == kind)
872 ref->method = target;
879 g_assert_not_reached ();
883 case MONO_WRAPPER_SYNCHRONIZED: {
884 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
888 ref->method = mono_marshal_get_synchronized_wrapper (m);
891 case MONO_WRAPPER_UNKNOWN: {
892 MonoMethodDesc *desc;
893 MonoMethod *orig_method;
894 int subtype = decode_value (p, &p);
896 if (subtype == WRAPPER_SUBTYPE_PTR_TO_STRUCTURE || subtype == WRAPPER_SUBTYPE_STRUCTURE_TO_PTR) {
897 MonoClass *klass = decode_klass_ref (module, p, &p);
904 if (klass != target->klass)
907 if (subtype == WRAPPER_SUBTYPE_PTR_TO_STRUCTURE) {
908 if (strcmp (target->name, "PtrToStructure"))
910 ref->method = mono_marshal_get_ptr_to_struct (klass);
912 if (strcmp (target->name, "StructureToPtr"))
914 ref->method = mono_marshal_get_struct_to_ptr (klass);
916 } else if (subtype == WRAPPER_SUBTYPE_SYNCHRONIZED_INNER) {
917 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
921 ref->method = mono_marshal_get_synchronized_inner_wrapper (m);
922 } else if (subtype == WRAPPER_SUBTYPE_ARRAY_ACCESSOR) {
923 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
927 ref->method = mono_marshal_get_array_accessor_wrapper (m);
928 } else if (subtype == WRAPPER_SUBTYPE_GSHAREDVT_IN) {
929 ref->method = mono_marshal_get_gsharedvt_in_wrapper ();
930 } else if (subtype == WRAPPER_SUBTYPE_GSHAREDVT_OUT) {
931 ref->method = mono_marshal_get_gsharedvt_out_wrapper ();
933 if (subtype == WRAPPER_SUBTYPE_FAST_MONITOR_ENTER)
934 desc = mono_method_desc_new ("Monitor:Enter", FALSE);
935 else if (subtype == WRAPPER_SUBTYPE_FAST_MONITOR_EXIT)
936 desc = mono_method_desc_new ("Monitor:Exit", FALSE);
937 else if (subtype == WRAPPER_SUBTYPE_FAST_MONITOR_ENTER_V4)
938 desc = mono_method_desc_new ("Monitor:Enter(object,bool&)", FALSE);
940 g_assert_not_reached ();
941 orig_method = mono_method_desc_search_in_class (desc, mono_defaults.monitor_class);
942 g_assert (orig_method);
943 mono_method_desc_free (desc);
944 ref->method = mono_monitor_get_fast_path (orig_method);
948 case MONO_WRAPPER_MANAGED_TO_MANAGED: {
949 int subtype = decode_value (p, &p);
951 if (subtype == WRAPPER_SUBTYPE_ELEMENT_ADDR) {
952 int rank = decode_value (p, &p);
953 int elem_size = decode_value (p, &p);
955 ref->method = mono_marshal_get_array_address (rank, elem_size);
956 } else if (subtype == WRAPPER_SUBTYPE_STRING_CTOR) {
960 m = decode_resolve_method_ref (module, p, &p);
966 g_assert (target->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED);
968 info = mono_marshal_get_wrapper_info (target);
969 if (info && info->subtype == subtype && info->d.string_ctor.method == m)
970 ref->method = target;
976 case MONO_WRAPPER_MANAGED_TO_NATIVE: {
978 int subtype = decode_value (p, &p);
981 if (subtype == WRAPPER_SUBTYPE_ICALL_WRAPPER) {
986 if (strcmp (target->name, name) != 0)
988 ref->method = target;
990 m = decode_resolve_method_ref (module, p, &p);
995 /* This should only happen when looking for an extra method */
998 if (mono_marshal_method_from_wrapper (target) == m)
999 ref->method = target;
1005 case MONO_WRAPPER_CASTCLASS: {
1006 int subtype = decode_value (p, &p);
1008 if (subtype == WRAPPER_SUBTYPE_CASTCLASS_WITH_CACHE)
1009 ref->method = mono_marshal_get_castclass_with_cache ();
1010 else if (subtype == WRAPPER_SUBTYPE_ISINST_WITH_CACHE)
1011 ref->method = mono_marshal_get_isinst_with_cache ();
1013 g_assert_not_reached ();
1016 case MONO_WRAPPER_RUNTIME_INVOKE: {
1017 int subtype = decode_value (p, &p);
1022 if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_DYNAMIC) {
1023 if (strcmp (target->name, "runtime_invoke_dynamic") != 0)
1025 ref->method = target;
1026 } else if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_DIRECT) {
1027 /* Direct wrapper */
1028 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
1032 ref->method = mono_marshal_get_runtime_invoke (m, FALSE);
1033 } else if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_VIRTUAL) {
1034 /* Virtual direct wrapper */
1035 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
1039 ref->method = mono_marshal_get_runtime_invoke (m, TRUE);
1041 MonoMethodSignature *sig;
1044 sig = decode_signature_with_target (module, NULL, p, &p);
1045 info = mono_marshal_get_wrapper_info (target);
1048 if (info->subtype != subtype)
1050 g_assert (info->d.runtime_invoke.sig);
1051 if (mono_metadata_signature_equal (sig, info->d.runtime_invoke.sig))
1052 ref->method = target;
1058 case MONO_WRAPPER_DELEGATE_INVOKE:
1059 case MONO_WRAPPER_DELEGATE_BEGIN_INVOKE:
1060 case MONO_WRAPPER_DELEGATE_END_INVOKE: {
1061 gboolean is_inflated = decode_value (p, &p);
1062 WrapperSubtype subtype;
1066 MonoMethod *invoke, *wrapper;
1068 klass = decode_klass_ref (module, p, &p);
1072 switch (wrapper_type) {
1073 case MONO_WRAPPER_DELEGATE_INVOKE:
1074 invoke = mono_get_delegate_invoke (klass);
1075 wrapper = mono_marshal_get_delegate_invoke (invoke, NULL);
1077 case MONO_WRAPPER_DELEGATE_BEGIN_INVOKE:
1078 invoke = mono_get_delegate_begin_invoke (klass);
1079 wrapper = mono_marshal_get_delegate_begin_invoke (invoke);
1081 case MONO_WRAPPER_DELEGATE_END_INVOKE:
1082 invoke = mono_get_delegate_end_invoke (klass);
1083 wrapper = mono_marshal_get_delegate_end_invoke (invoke);
1086 g_assert_not_reached ();
1089 if (target && wrapper != target)
1091 ref->method = wrapper;
1094 * These wrappers are associated with a signature, not with a method.
1095 * Since we can't decode them into methods, they need a target method.
1100 if (wrapper_type == MONO_WRAPPER_DELEGATE_INVOKE) {
1103 subtype = decode_value (p, &p);
1104 info = mono_marshal_get_wrapper_info (target);
1106 if (info->subtype != subtype)
1109 if (subtype != WRAPPER_SUBTYPE_NONE)
1113 if (sig_matches_target (module, target, p, &p))
1114 ref->method = target;
1120 case MONO_WRAPPER_NATIVE_TO_MANAGED: {
1124 m = decode_resolve_method_ref (module, p, &p);
1127 klass = decode_klass_ref (module, p, &p);
1130 ref->method = mono_marshal_get_managed_wrapper (m, klass, 0);
1134 g_assert_not_reached ();
1136 } else if (image_index == MONO_AOT_METHODREF_METHODSPEC) {
1137 image_index = decode_value (p, &p);
1138 ref->token = decode_value (p, &p);
1140 image = load_image (module, image_index, TRUE);
1143 } else if (image_index == MONO_AOT_METHODREF_GINST) {
1145 MonoGenericContext ctx;
1148 * These methods do not have a token which resolves them, so we
1149 * resolve them immediately.
1151 klass = decode_klass_ref (module, p, &p);
1155 if (target && target->klass != klass)
1158 image_index = decode_value (p, &p);
1159 ref->token = decode_value (p, &p);
1161 image = load_image (module, image_index, TRUE);
1165 ref->method = mono_get_method_full (image, ref->token, NULL, NULL);
1169 memset (&ctx, 0, sizeof (ctx));
1171 if (FALSE && klass->generic_class) {
1172 ctx.class_inst = klass->generic_class->context.class_inst;
1173 ctx.method_inst = NULL;
1175 ref->method = mono_class_inflate_generic_method_full (ref->method, klass, &ctx);
1178 memset (&ctx, 0, sizeof (ctx));
1180 if (!decode_generic_context (module, &ctx, p, &p))
1183 ref->method = mono_class_inflate_generic_method_full (ref->method, klass, &ctx);
1184 } else if (image_index == MONO_AOT_METHODREF_ARRAY) {
1188 klass = decode_klass_ref (module, p, &p);
1191 method_type = decode_value (p, &p);
1192 switch (method_type) {
1194 ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank);
1197 ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank * 2);
1200 ref->method = mono_class_get_method_from_name (klass, "Get", -1);
1203 ref->method = mono_class_get_method_from_name (klass, "Address", -1);
1206 ref->method = mono_class_get_method_from_name (klass, "Set", -1);
1209 g_assert_not_reached ();
1212 if (image_index == MONO_AOT_METHODREF_LARGE_IMAGE_INDEX) {
1213 image_index = decode_value (p, &p);
1214 value = decode_value (p, &p);
1217 ref->token = MONO_TOKEN_METHOD_DEF | (value & 0xffffff);
1219 image = load_image (module, image_index, TRUE);
1232 decode_method_ref (MonoAotModule *module, MethodRef *ref, guint8 *buf, guint8 **endbuf)
1234 return decode_method_ref_with_target (module, ref, NULL, buf, endbuf);
1238 * decode_resolve_method_ref_with_target:
1240 * Similar to decode_method_ref, but resolve and return the method itself.
1243 decode_resolve_method_ref_with_target (MonoAotModule *module, MonoMethod *target, guint8 *buf, guint8 **endbuf)
1248 res = decode_method_ref_with_target (module, &ref, target, buf, endbuf);
1255 return mono_get_method (ref.image, ref.token, NULL);
1259 decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
1261 return decode_resolve_method_ref_with_target (module, NULL, buf, endbuf);
1265 create_cache_structure (void)
1271 home = g_get_home_dir ();
1275 tmp = g_build_filename (home, ".mono", NULL);
1276 if (!g_file_test (tmp, G_FILE_TEST_IS_DIR)) {
1277 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT creating directory %s", tmp);
1281 err = mkdir (tmp, 0777);
1284 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed: %s", g_strerror (errno));
1290 tmp = g_build_filename (home, ".mono", "aot-cache", NULL);
1291 if (!g_file_test (tmp, G_FILE_TEST_IS_DIR)) {
1292 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT creating directory %s", tmp);
1296 err = mkdir (tmp, 0777);
1299 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed: %s", g_strerror (errno));
1308 * load_aot_module_from_cache:
1310 * Experimental code to AOT compile loaded assemblies on demand.
1313 * - Add environment variable MONO_AOT_CACHE_OPTIONS
1314 * - Add options for controlling the cache size
1315 * - Handle full cache by deleting old assemblies lru style
1316 * - Add options for excluding assemblies during development
1317 * - Maybe add a threshold after an assembly is AOT compiled
1318 * - invoking a new mono process is a security risk
1319 * - recompile the AOT module if one of its dependencies changes
1322 load_aot_module_from_cache (MonoAssembly *assembly, char **aot_name)
1324 char *fname, *cmd, *tmp2, *aot_options;
1333 if (assembly->image->dynamic)
1336 create_cache_structure ();
1338 home = g_get_home_dir ();
1340 tmp2 = g_strdup_printf ("%s-%s%s", assembly->image->assembly_name, assembly->image->guid, SHARED_EXT);
1341 fname = g_build_filename (home, ".mono", "aot-cache", tmp2, NULL);
1345 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT trying to load from cache: '%s'.", fname);
1346 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
1349 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT not found.");
1351 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT precompiling assembly '%s'... ", assembly->image->name);
1353 aot_options = g_strdup_printf ("outfile=%s", fname);
1355 if (spawn_compiler) {
1356 /* FIXME: security */
1357 /* FIXME: Has to pass the assembly loading path to the child process */
1358 cmd = g_strdup_printf ("mono -O=all --aot=%s %s", aot_options, assembly->image->name);
1360 res = g_spawn_command_line_sync (cmd, &out, &err, &exit_status, NULL);
1362 #if !defined(HOST_WIN32) && !defined(__ppc__) && !defined(__ppc64__) && !defined(__powerpc__)
1364 if (!WIFEXITED (exit_status) && (WEXITSTATUS (exit_status) == 0))
1365 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT failed: %s.", err);
1367 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT succeeded.");
1374 res = mono_compile_assembly (assembly, mono_parse_default_optimizations (NULL), aot_options);
1376 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT failed.");
1378 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT succeeded.");
1382 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
1384 g_free (aot_options);
1391 find_symbol (MonoDl *module, gpointer *globals, const char *name, gpointer *value)
1395 guint16 *table, *entry;
1398 char *symbol = (char*)name;
1401 symbol = g_strdup_printf ("_%s", name);
1404 /* The first entry points to the hash */
1405 table = globals [0];
1408 table_size = table [0];
1411 hash = mono_metadata_str_hash (symbol) % table_size;
1413 entry = &table [hash * 2];
1415 /* Search the hash for the index into the globals table */
1417 while (entry [0] != 0) {
1418 guint32 index = entry [0] - 1;
1419 guint32 next = entry [1];
1421 //printf ("X: %s %s\n", (char*)globals [index * 2], name);
1423 if (!strcmp (globals [index * 2], symbol)) {
1424 global_index = index;
1429 entry = &table [next * 2];
1435 if (global_index != -1)
1436 *value = globals [global_index * 2 + 1];
1443 char *err = mono_dl_symbol (module, name, value);
1451 check_usable (MonoAssembly *assembly, MonoAotFileInfo *info, char **out_msg)
1455 gboolean usable = TRUE;
1458 guint32 excluded_cpu_optimizations;
1460 if (strcmp (assembly->image->guid, info->assembly_guid)) {
1461 msg = g_strdup_printf ("doesn't match assembly");
1465 build_info = mono_get_runtime_build_info ();
1466 if (strlen (info->runtime_version) > 0 && strcmp (info->runtime_version, build_info)) {
1467 msg = g_strdup_printf ("compiled against runtime version '%s' while this runtime has version '%s'", info->runtime_version, build_info);
1470 g_free (build_info);
1472 full_aot = info->flags & MONO_AOT_FILE_FLAG_FULL_AOT;
1474 if (mono_aot_only && !full_aot) {
1475 msg = g_strdup_printf ("not compiled with --aot=full");
1478 if (!mono_aot_only && full_aot) {
1479 msg = g_strdup_printf ("compiled with --aot=full");
1483 /* mono_arch_find_imt_method () requires this */
1484 if ((info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM) && !mono_use_llvm) {
1485 msg = g_strdup_printf ("compiled against LLVM");
1488 if (!(info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM) && mono_use_llvm) {
1489 msg = g_strdup_printf ("not compiled against LLVM");
1493 if (mini_get_debug_options ()->mdb_optimizations && !(info->flags & MONO_AOT_FILE_FLAG_DEBUG) && !full_aot) {
1494 msg = g_strdup_printf ("not compiled for debugging");
1498 mono_arch_cpu_optimizations (&excluded_cpu_optimizations);
1499 if (info->opts & excluded_cpu_optimizations) {
1500 msg = g_strdup_printf ("compiled with unsupported CPU optimizations");
1504 if (!mono_aot_only && (info->simd_opts & ~mono_arch_cpu_enumerate_simd_versions ())) {
1505 msg = g_strdup_printf ("compiled with unsupported SIMD extensions");
1511 if (info->gc_name_index != -1) {
1512 char *gc_name = (char*)&blob [info->gc_name_index];
1513 const char *current_gc_name = mono_gc_get_gc_name ();
1515 if (strcmp (current_gc_name, gc_name) != 0) {
1516 msg = g_strdup_printf ("compiled against GC %s, while the current runtime uses GC %s.\n", gc_name, current_gc_name);
1525 /* This returns an interop address */
1527 get_arm_bl_target (guint32 *ins_addr)
1530 guint32 ins = *ins_addr;
1533 if ((ins >> ARMCOND_SHIFT) == ARMCOND_NV) {
1535 offset = (((int)(((ins & 0xffffff) << 1) | ((ins >> 24) & 0x1))) << 7) >> 7;
1536 return (char*)ins_addr + (offset * 2) + 8 + 1;
1538 offset = (((int)ins & 0xffffff) << 8) >> 8;
1539 return (char*)ins_addr + (offset * 4) + 8;
1542 g_assert_not_reached ();
1548 load_aot_module (MonoAssembly *assembly, gpointer user_data)
1551 MonoAotModule *amodule;
1553 gboolean usable = TRUE;
1554 char *version_symbol = NULL;
1556 gpointer *globals = NULL;
1557 MonoAotFileInfo *info = NULL;
1560 gboolean do_load_image = TRUE;
1561 int align_double, align_int64;
1563 if (mono_compile_aot)
1566 if (assembly->image->aot_module)
1568 * Already loaded. This can happen because the assembly loading code might invoke
1569 * the assembly load hooks multiple times for the same assembly.
1573 if (assembly->image->dynamic || assembly->ref_only)
1576 if (mono_security_cas_enabled ())
1580 if (static_aot_modules)
1581 info = g_hash_table_lookup (static_aot_modules, assembly->aname.name);
1587 /* Statically linked AOT module */
1589 aot_name = g_strdup_printf ("%s", assembly->aname.name);
1590 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "Found statically linked AOT module '%s'.\n", aot_name);
1591 globals = info->globals;
1594 sofile = load_aot_module_from_cache (assembly, &aot_name);
1597 aot_name = g_strdup_printf ("%s%s", assembly->image->name, SHARED_EXT);
1599 sofile = mono_dl_open (aot_name, MONO_DL_LAZY, &err);
1602 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed to load AOT module %s: %s\n", aot_name, err);
1608 if (!sofile && !globals) {
1609 if (mono_aot_only && assembly->image->tables [MONO_TABLE_METHOD].rows) {
1610 fprintf (stderr, "Failed to load AOT module '%s' in aot-only mode.\n", aot_name);
1618 find_symbol (sofile, globals, "mono_aot_version", (gpointer *) &version_symbol);
1619 find_symbol (sofile, globals, "mono_aot_file_info", (gpointer*)&info);
1622 if (version_symbol) {
1623 /* Old file format */
1624 version = atoi (version_symbol);
1627 version = info->version;
1630 if (version != MONO_AOT_FILE_VERSION) {
1631 msg = g_strdup_printf ("wrong file format version (expected %d got %d)", MONO_AOT_FILE_VERSION, version);
1634 usable = check_usable (assembly, info, &msg);
1638 if (mono_aot_only) {
1639 fprintf (stderr, "Failed to load AOT module '%s' while running in aot-only mode: %s.\n", aot_name, msg);
1642 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is unusable: %s.\n", aot_name, msg);
1647 mono_dl_close (sofile);
1648 assembly->image->aot_module = NULL;
1652 #if defined (TARGET_ARM) && defined (TARGET_MACH)
1657 memset (&t, 0, sizeof (MonoType));
1658 t.type = MONO_TYPE_R8;
1659 mono_type_size (&t, &align);
1660 align_double = align;
1662 memset (&t, 0, sizeof (MonoType));
1663 t.type = MONO_TYPE_I8;
1664 align_int64 = align;
1667 align_double = __alignof__ (double);
1668 align_int64 = __alignof__ (gint64);
1672 g_assert (info->double_align == align_double);
1673 g_assert (info->long_align == align_int64);
1674 g_assert (info->generic_tramp_num == MONO_TRAMPOLINE_NUM);
1678 amodule = g_new0 (MonoAotModule, 1);
1679 amodule->aot_name = aot_name;
1680 amodule->assembly = assembly;
1682 memcpy (&amodule->info, info, sizeof (*info));
1684 amodule->got = amodule->info.got;
1685 amodule->got [0] = assembly->image;
1686 amodule->globals = globals;
1687 amodule->sofile = sofile;
1688 amodule->method_to_code = g_hash_table_new (mono_aligned_addr_hash, NULL);
1689 amodule->blob = blob;
1691 /* Read image table */
1693 guint32 table_len, i;
1696 table = info->image_table;
1699 table_len = *(guint32*)table;
1700 table += sizeof (guint32);
1701 amodule->image_table = g_new0 (MonoImage*, table_len);
1702 amodule->image_names = g_new0 (MonoAssemblyName, table_len);
1703 amodule->image_guids = g_new0 (char*, table_len);
1704 amodule->image_table_len = table_len;
1705 for (i = 0; i < table_len; ++i) {
1706 MonoAssemblyName *aname = &(amodule->image_names [i]);
1708 aname->name = g_strdup (table);
1709 table += strlen (table) + 1;
1710 amodule->image_guids [i] = g_strdup (table);
1711 table += strlen (table) + 1;
1713 aname->culture = g_strdup (table);
1714 table += strlen (table) + 1;
1715 memcpy (aname->public_key_token, table, strlen (table) + 1);
1716 table += strlen (table) + 1;
1718 table = ALIGN_PTR_TO (table, 8);
1719 aname->flags = *(guint32*)table;
1721 aname->major = *(guint32*)table;
1723 aname->minor = *(guint32*)table;
1725 aname->build = *(guint32*)table;
1727 aname->revision = *(guint32*)table;
1732 amodule->code_offsets = info->code_offsets;
1734 amodule->method_addresses = info->method_addresses;
1736 amodule->code = info->methods;
1738 /* Mask out thumb interop bit */
1739 amodule->code = (void*)((mgreg_t)amodule->code & ~1);
1741 amodule->code_end = info->methods_end;
1742 amodule->method_info_offsets = info->method_info_offsets;
1743 amodule->ex_info_offsets = info->ex_info_offsets;
1744 amodule->class_info_offsets = info->class_info_offsets;
1745 amodule->class_name_table = info->class_name_table;
1746 amodule->extra_method_table = info->extra_method_table;
1747 amodule->extra_method_info_offsets = info->extra_method_info_offsets;
1748 amodule->unbox_trampolines = info->unbox_trampolines;
1749 amodule->unbox_trampolines_end = info->unbox_trampolines_end;
1750 amodule->got_info_offsets = info->got_info_offsets;
1751 amodule->unwind_info = info->unwind_info;
1752 amodule->mem_end = info->mem_end;
1753 amodule->mem_begin = amodule->code;
1754 amodule->plt = info->plt;
1755 amodule->plt_end = info->plt_end;
1756 amodule->mono_eh_frame = info->mono_eh_frame;
1757 amodule->trampolines [MONO_AOT_TRAMP_SPECIFIC] = info->specific_trampolines;
1758 amodule->trampolines [MONO_AOT_TRAMP_STATIC_RGCTX] = info->static_rgctx_trampolines;
1759 amodule->trampolines [MONO_AOT_TRAMP_IMT_THUNK] = info->imt_thunks;
1760 amodule->trampolines [MONO_AOT_TRAMP_GSHAREDVT_ARG] = info->gsharedvt_arg_trampolines;
1761 amodule->thumb_end = info->thumb_end;
1764 if (info->flags & MONO_AOT_FILE_FLAG_DIRECT_METHOD_ADDRESSES) {
1765 /* Compute code_offsets from the method addresses */
1766 amodule->code_offsets = g_malloc0 (amodule->info.nmethods * sizeof (gint32));
1767 for (i = 0; i < amodule->info.nmethods; ++i) {
1768 /* method_addresses () contains a table of branches, since the ios linker can update those correctly */
1769 void *addr = get_arm_bl_target ((guint32*)(amodule->method_addresses + i));
1771 if (addr == amodule->method_addresses)
1772 amodule->code_offsets [i] = 0xffffffff;
1774 amodule->code_offsets [i] = (char*)addr - (char*)amodule->code;
1779 if (make_unreadable) {
1780 #ifndef TARGET_WIN32
1782 guint8 *page_start, *page_end;
1785 addr = amodule->mem_begin;
1786 len = amodule->mem_end - amodule->mem_begin;
1788 /* Round down in both directions to avoid modifying data which is not ours */
1789 page_start = (guint8 *) (((gssize) (addr)) & ~ (mono_pagesize () - 1)) + mono_pagesize ();
1790 page_end = (guint8 *) (((gssize) (addr + len)) & ~ (mono_pagesize () - 1));
1791 if (page_end > page_start) {
1792 err = mono_mprotect (page_start, (page_end - page_start), MONO_MMAP_NONE);
1793 g_assert (err == 0);
1800 aot_code_low_addr = MIN (aot_code_low_addr, (gsize)amodule->code);
1801 aot_code_high_addr = MAX (aot_code_high_addr, (gsize)amodule->code_end);
1803 g_hash_table_insert (aot_modules, assembly, amodule);
1806 mono_jit_info_add_aot_module (assembly->image, amodule->code, amodule->code_end);
1808 assembly->image->aot_module = amodule;
1810 if (mono_aot_only) {
1812 find_symbol (amodule->sofile, amodule->globals, "specific_trampolines_page", (gpointer *)&code);
1813 amodule->use_page_trampolines = code != NULL;
1814 /*g_warning ("using page trampolines: %d", amodule->use_page_trampolines);*/
1815 if (mono_defaults.corlib) {
1816 /* The second got slot contains the mscorlib got addr */
1817 MonoAotModule *mscorlib_amodule = mono_defaults.corlib->aot_module;
1819 amodule->got [1] = mscorlib_amodule->got;
1821 amodule->got [1] = amodule->got;
1825 if (mono_gc_is_moving ()) {
1828 memset (&ji, 0, sizeof (ji));
1829 ji.type = MONO_PATCH_INFO_GC_CARD_TABLE_ADDR;
1831 amodule->got [2] = mono_resolve_patch_target (NULL, mono_get_root_domain (), NULL, &ji, FALSE);
1835 * Since we store methoddef and classdef tokens when referring to methods/classes in
1836 * referenced assemblies, we depend on the exact versions of the referenced assemblies.
1837 * MS calls this 'hard binding'. This means we have to load all referenced assemblies
1838 * non-lazily, since we can't handle out-of-date errors later.
1839 * The cached class info also depends on the exact assemblies.
1841 #if defined(__native_client__)
1842 /* TODO: Don't 'load_image' on mscorlib due to a */
1843 /* recursive loading problem. This should be */
1844 /* removed if mscorlib is loaded from disk. */
1845 if (strncmp(assembly->aname.name, "mscorlib", 8)) {
1846 do_load_image = TRUE;
1848 do_load_image = FALSE;
1851 if (do_load_image) {
1852 for (i = 0; i < amodule->image_table_len; ++i)
1853 load_image (amodule, i, FALSE);
1856 if (amodule->out_of_date) {
1857 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);
1858 if (mono_aot_only) {
1859 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);
1864 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT loaded AOT Module for %s.\n", assembly->image->name);
1868 * mono_aot_register_globals:
1870 * This is called by the ctor function in AOT images compiled with the
1871 * 'no-dlsym' option.
1874 mono_aot_register_globals (gpointer *globals)
1876 g_assert_not_reached ();
1880 * mono_aot_register_module:
1882 * This should be called by embedding code to register AOT modules statically linked
1883 * into the executable. AOT_INFO should be the value of the
1884 * 'mono_aot_module_<ASSEMBLY_NAME>_info' global symbol from the AOT module.
1887 mono_aot_register_module (gpointer *aot_info)
1891 MonoAotFileInfo *info = (gpointer)aot_info;
1893 g_assert (info->version == MONO_AOT_FILE_VERSION);
1895 globals = info->globals;
1898 aname = info->assembly_name;
1900 /* This could be called before startup */
1904 if (!static_aot_modules)
1905 static_aot_modules = g_hash_table_new (g_str_hash, g_str_equal);
1907 g_hash_table_insert (static_aot_modules, aname, info);
1914 mono_aot_init (void)
1916 InitializeCriticalSection (&aot_mutex);
1917 InitializeCriticalSection (&aot_page_mutex);
1918 aot_modules = g_hash_table_new (NULL, NULL);
1920 #ifndef __native_client__
1921 mono_install_assembly_load_hook (load_aot_module, NULL);
1923 mono_counters_register ("Async JIT info size", MONO_COUNTER_INT|MONO_COUNTER_JIT, &async_jit_info_size);
1925 if (g_getenv ("MONO_LASTAOT"))
1926 mono_last_aot_method = atoi (g_getenv ("MONO_LASTAOT"));
1927 if (g_getenv ("MONO_AOT_CACHE"))
1928 use_aot_cache = TRUE;
1932 mono_aot_cleanup (void)
1934 if (aot_jit_icall_hash)
1935 g_hash_table_destroy (aot_jit_icall_hash);
1937 g_hash_table_destroy (aot_modules);
1941 decode_cached_class_info (MonoAotModule *module, MonoCachedClassInfo *info, guint8 *buf, guint8 **endbuf)
1947 info->vtable_size = decode_value (buf, &buf);
1948 if (info->vtable_size == -1)
1951 flags = decode_value (buf, &buf);
1952 info->ghcimpl = (flags >> 0) & 0x1;
1953 info->has_finalize = (flags >> 1) & 0x1;
1954 info->has_cctor = (flags >> 2) & 0x1;
1955 info->has_nested_classes = (flags >> 3) & 0x1;
1956 info->blittable = (flags >> 4) & 0x1;
1957 info->has_references = (flags >> 5) & 0x1;
1958 info->has_static_refs = (flags >> 6) & 0x1;
1959 info->no_special_static_fields = (flags >> 7) & 0x1;
1960 info->is_generic_container = (flags >> 8) & 0x1;
1962 if (info->has_cctor) {
1963 res = decode_method_ref (module, &ref, buf, &buf);
1966 info->cctor_token = ref.token;
1968 if (info->has_finalize) {
1969 res = decode_method_ref (module, &ref, buf, &buf);
1972 info->finalize_image = ref.image;
1973 info->finalize_token = ref.token;
1976 info->instance_size = decode_value (buf, &buf);
1977 info->class_size = decode_value (buf, &buf);
1978 info->packing_size = decode_value (buf, &buf);
1979 info->min_align = decode_value (buf, &buf);
1987 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
1990 MonoClass *klass = vtable->klass;
1991 MonoAotModule *amodule = klass->image->aot_module;
1993 MonoCachedClassInfo class_info;
1998 if (MONO_CLASS_IS_INTERFACE (klass) || klass->rank || !amodule)
2001 info = &amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
2004 err = decode_cached_class_info (amodule, &class_info, p, &p);
2008 for (i = 0; i < slot; ++i)
2009 decode_method_ref (amodule, &ref, p, &p);
2011 res = decode_method_ref (amodule, &ref, p, &p);
2014 if (ref.no_aot_trampoline)
2017 if (mono_metadata_token_index (ref.token) == 0 || mono_metadata_token_table (ref.token) != MONO_TABLE_METHOD)
2020 return mono_aot_get_method_from_token (domain, ref.image, ref.token);
2024 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
2026 MonoAotModule *amodule = klass->image->aot_module;
2030 if (klass->rank || !amodule)
2033 p = (guint8*)&amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
2035 err = decode_cached_class_info (amodule, res, p, &p);
2043 * mono_aot_get_class_from_name:
2045 * Obtains a MonoClass with a given namespace and a given name which is located in IMAGE,
2046 * using a cache stored in the AOT file.
2047 * Stores the resulting class in *KLASS if found, stores NULL otherwise.
2049 * Returns: TRUE if the klass was found/not found in the cache, FALSE if no aot file was
2053 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
2055 MonoAotModule *amodule = image->aot_module;
2056 guint16 *table, *entry;
2059 char full_name_buf [1024];
2061 const char *name2, *name_space2;
2063 guint32 cols [MONO_TYPEDEF_SIZE];
2064 GHashTable *nspace_table;
2066 if (!amodule || !amodule->class_name_table)
2073 /* First look in the cache */
2074 if (!amodule->name_cache)
2075 amodule->name_cache = g_hash_table_new (g_str_hash, g_str_equal);
2076 nspace_table = g_hash_table_lookup (amodule->name_cache, name_space);
2078 *klass = g_hash_table_lookup (nspace_table, name);
2085 table_size = amodule->class_name_table [0];
2086 table = amodule->class_name_table + 1;
2088 if (name_space [0] == '\0')
2089 full_name = g_strdup_printf ("%s", name);
2091 if (strlen (name_space) + strlen (name) < 1000) {
2092 sprintf (full_name_buf, "%s.%s", name_space, name);
2093 full_name = full_name_buf;
2095 full_name = g_strdup_printf ("%s.%s", name_space, name);
2098 hash = mono_metadata_str_hash (full_name) % table_size;
2099 if (full_name != full_name_buf)
2102 entry = &table [hash * 2];
2104 if (entry [0] != 0) {
2105 t = &image->tables [MONO_TABLE_TYPEDEF];
2108 guint32 index = entry [0];
2109 guint32 next = entry [1];
2110 guint32 token = mono_metadata_make_token (MONO_TABLE_TYPEDEF, index);
2112 name_table_accesses ++;
2114 mono_metadata_decode_row (t, index - 1, cols, MONO_TYPEDEF_SIZE);
2116 name2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
2117 name_space2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
2119 if (!strcmp (name, name2) && !strcmp (name_space, name_space2)) {
2121 *klass = mono_class_get (image, token);
2126 nspace_table = g_hash_table_lookup (amodule->name_cache, name_space);
2127 if (!nspace_table) {
2128 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
2129 g_hash_table_insert (amodule->name_cache, (char*)name_space2, nspace_table);
2131 g_hash_table_insert (nspace_table, (char*)name2, *klass);
2138 entry = &table [next * 2];
2151 * decode_mono_eh_frame:
2153 * Decode the EH information emitted by our modified LLVM compiler and construct a
2154 * MonoJitInfo structure from it.
2155 * LOCKING: Acquires the domain lock.
2158 decode_llvm_mono_eh_frame (MonoAotModule *amodule, MonoDomain *domain,
2159 MonoMethod *method, guint8 *code,
2160 MonoJitExceptionInfo *clauses, int num_clauses,
2161 int extra_size, GSList **nesting,
2162 int *this_reg, int *this_offset)
2165 guint8 *fde, *cie, *code_start, *code_end;
2166 int version, fde_count;
2168 int i, j, pos, left, right, offset, offset1, offset2, code_len, func_encoding;
2169 MonoJitExceptionInfo *ei;
2170 guint32 fde_len, ei_len, nested_len, nindex;
2171 gpointer *type_info;
2173 MonoLLVMFDEInfo info;
2175 g_assert (amodule->mono_eh_frame);
2177 p = amodule->mono_eh_frame;
2179 /* p points to data emitted by LLVM in DwarfException::EmitMonoEHFrame () */
2183 g_assert (version == 3);
2187 p = ALIGN_PTR_TO (p, 4);
2189 fde_count = *(guint32*)p;
2193 /* There is +1 entry in the table */
2194 cie = p + ((fde_count + 1) * 8);
2196 /* Binary search in the table to find the entry for code */
2197 offset = code - amodule->code;
2201 pos = (left + right) / 2;
2203 /* The table contains method index/fde offset pairs */
2204 g_assert (table [(pos * 2)] != -1);
2205 offset1 = amodule->code_offsets [table [(pos * 2)]];
2206 if (pos + 1 == fde_count) {
2207 offset2 = amodule->code_end - amodule->code;
2209 g_assert (table [(pos + 1) * 2] != -1);
2210 offset2 = amodule->code_offsets [table [(pos + 1) * 2]];
2213 if (offset < offset1)
2215 else if (offset >= offset2)
2221 code_start = amodule->code + amodule->code_offsets [table [(pos * 2)]];
2222 if (pos + 1 == fde_count) {
2223 /* The +1 entry in the table contains the length of the last method */
2224 int len = table [(pos + 1) * 2];
2225 code_end = code_start + len;
2227 code_end = amodule->code + amodule->code_offsets [table [(pos + 1) * 2]];
2229 code_len = code_end - code_start;
2231 g_assert (code >= code_start && code < code_end);
2233 if (amodule->thumb_end && (guint8*)code_start < amodule->thumb_end)
2234 /* Clear thumb flag */
2235 code_start = (guint8*)(((mgreg_t)code_start) & ~1);
2237 fde = amodule->mono_eh_frame + table [(pos * 2) + 1];
2238 /* This won't overflow because there is +1 entry in the table */
2239 fde_len = table [(pos * 2) + 2 + 1] - table [(pos * 2) + 1];
2241 mono_unwind_decode_llvm_mono_fde (fde, fde_len, cie, code_start, &info);
2243 ei_len = info.ex_info_len;
2244 type_info = info.type_info;
2245 *this_reg = info.this_reg;
2246 *this_offset = info.this_offset;
2248 /* Count number of nested clauses */
2250 for (i = 0; i < ei_len; ++i) {
2251 /* This might be unaligned */
2252 gint32 cindex1 = read32 (type_info [i]);
2255 for (l = nesting [cindex1]; l; l = l->next) {
2256 gint32 nesting_cindex = GPOINTER_TO_INT (l->data);
2258 for (j = 0; j < ei_len; ++j) {
2259 gint32 cindex2 = read32 (type_info [j]);
2261 if (cindex2 == nesting_cindex)
2268 * LLVM might represent one IL region with multiple regions, so have to
2269 * allocate a new JI.
2272 mono_domain_alloc0_lock_free (domain, MONO_SIZEOF_JIT_INFO + (sizeof (MonoJitExceptionInfo) * (ei_len + nested_len)) + extra_size);
2274 jinfo->code_size = code_len;
2275 jinfo->used_regs = mono_cache_unwind_info (info.unw_info, info.unw_info_len);
2276 jinfo->d.method = method;
2277 jinfo->code_start = code;
2278 jinfo->domain_neutral = 0;
2279 /* This signals that used_regs points to a normal cached unwind info */
2280 jinfo->from_aot = 0;
2281 jinfo->num_clauses = ei_len + nested_len;
2283 for (i = 0; i < ei_len; ++i) {
2285 * orig_jinfo contains the original IL exception info saved by the AOT
2286 * compiler, we have to combine that with the information produced by LLVM
2288 /* The type_info entries contain IL clause indexes */
2289 int clause_index = read32 (type_info [i]);
2290 MonoJitExceptionInfo *jei = &jinfo->clauses [i];
2291 MonoJitExceptionInfo *orig_jei = &clauses [clause_index];
2293 g_assert (clause_index < num_clauses);
2294 jei->flags = orig_jei->flags;
2295 jei->data.catch_class = orig_jei->data.catch_class;
2297 jei->try_start = ei [i].try_start;
2298 jei->try_end = ei [i].try_end;
2299 jei->handler_start = ei [i].handler_start;
2301 /* Make sure we transition to thumb when a handler starts */
2302 if (amodule->thumb_end && (guint8*)jei->handler_start < amodule->thumb_end)
2303 jei->handler_start = (void*)((mgreg_t)jei->handler_start + 1);
2306 /* See exception_cb () in mini-llvm.c as to why this is needed */
2308 for (i = 0; i < ei_len; ++i) {
2309 gint32 cindex1 = read32 (type_info [i]);
2312 for (l = nesting [cindex1]; l; l = l->next) {
2313 gint32 nesting_cindex = GPOINTER_TO_INT (l->data);
2315 for (j = 0; j < ei_len; ++j) {
2316 gint32 cindex2 = read32 (type_info [j]);
2318 if (cindex2 == nesting_cindex) {
2320 * The try interval comes from the nested clause, everything else from the
2323 memcpy (&jinfo->clauses [nindex], &jinfo->clauses [j], sizeof (MonoJitExceptionInfo));
2324 jinfo->clauses [nindex].try_start = jinfo->clauses [i].try_start;
2325 jinfo->clauses [nindex].try_end = jinfo->clauses [i].try_end;
2331 g_assert (nindex == ei_len + nested_len);
2337 alloc0_jit_info_data (MonoDomain *domain, int size, gboolean async_context)
2341 if (async_context) {
2342 res = mono_domain_alloc0_lock_free (domain, size);
2343 InterlockedExchangeAdd (&async_jit_info_size, size);
2345 res = mono_domain_alloc0 (domain, size);
2351 * LOCKING: Acquires the domain lock.
2352 * In async context, this is async safe.
2355 decode_exception_debug_info (MonoAotModule *amodule, MonoDomain *domain,
2356 MonoMethod *method, guint8* ex_info, guint8 *addr,
2357 guint8 *code, guint32 code_len)
2359 int i, buf_len, num_clauses, len;
2361 guint used_int_regs, flags;
2362 gboolean has_generic_jit_info, has_dwarf_unwind_info, has_clauses, has_seq_points, has_try_block_holes, has_arch_eh_jit_info;
2363 gboolean from_llvm, has_gc_map;
2365 int generic_info_size, try_holes_info_size, num_holes, arch_eh_jit_info_size;
2366 int this_reg = 0, this_offset = 0;
2369 /* Load the method info from the AOT file */
2370 async = mono_thread_info_is_async_context ();
2373 flags = decode_value (p, &p);
2374 has_generic_jit_info = (flags & 1) != 0;
2375 has_dwarf_unwind_info = (flags & 2) != 0;
2376 has_clauses = (flags & 4) != 0;
2377 has_seq_points = (flags & 8) != 0;
2378 from_llvm = (flags & 16) != 0;
2379 has_try_block_holes = (flags & 32) != 0;
2380 has_gc_map = (flags & 64) != 0;
2381 has_arch_eh_jit_info = (flags & 128) != 0;
2383 if (has_dwarf_unwind_info) {
2386 offset = decode_value (p, &p);
2387 g_assert (offset < (1 << 30));
2388 used_int_regs = offset;
2390 used_int_regs = decode_value (p, &p);
2392 if (has_generic_jit_info)
2393 generic_info_size = sizeof (MonoGenericJitInfo);
2395 generic_info_size = 0;
2397 if (has_try_block_holes) {
2398 num_holes = decode_value (p, &p);
2399 try_holes_info_size = sizeof (MonoTryBlockHoleTableJitInfo) + num_holes * sizeof (MonoTryBlockHoleJitInfo);
2401 num_holes = try_holes_info_size = 0;
2403 /* Exception table */
2405 num_clauses = decode_value (p, &p);
2408 if (has_arch_eh_jit_info)
2409 arch_eh_jit_info_size = sizeof (MonoArchEHJitInfo);
2411 arch_eh_jit_info_size = 0;
2414 MonoJitExceptionInfo *clauses;
2421 * Part of the info is encoded by the AOT compiler, the rest is in the .eh_frame
2424 clauses = g_new0 (MonoJitExceptionInfo, num_clauses);
2425 nesting = g_new0 (GSList*, num_clauses);
2427 for (i = 0; i < num_clauses; ++i) {
2428 MonoJitExceptionInfo *ei = &clauses [i];
2430 ei->flags = decode_value (p, &p);
2432 if (decode_value (p, &p))
2433 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
2435 /* Read the list of nesting clauses */
2437 int nesting_index = decode_value (p, &p);
2438 if (nesting_index == -1)
2440 nesting [i] = g_slist_prepend (nesting [i], GINT_TO_POINTER (nesting_index));
2444 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);
2445 jinfo->from_llvm = 1;
2448 for (i = 0; i < num_clauses; ++i)
2449 g_slist_free (nesting [i]);
2452 len = MONO_SIZEOF_JIT_INFO + (sizeof (MonoJitExceptionInfo) * num_clauses) + generic_info_size + try_holes_info_size + arch_eh_jit_info_size;
2453 jinfo = alloc0_jit_info_data (domain, len, async);
2454 jinfo->num_clauses = num_clauses;
2456 for (i = 0; i < jinfo->num_clauses; ++i) {
2457 MonoJitExceptionInfo *ei = &jinfo->clauses [i];
2459 ei->flags = decode_value (p, &p);
2461 ei->exvar_offset = decode_value (p, &p);
2463 if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER || ei->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
2464 ei->data.filter = code + decode_value (p, &p);
2466 int len = decode_value (p, &p);
2472 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
2476 ei->try_start = code + decode_value (p, &p);
2477 ei->try_end = code + decode_value (p, &p);
2478 ei->handler_start = code + decode_value (p, &p);
2481 jinfo->code_size = code_len;
2482 jinfo->used_regs = used_int_regs;
2483 jinfo->d.method = method;
2484 jinfo->code_start = code;
2485 jinfo->domain_neutral = 0;
2486 jinfo->from_aot = 1;
2489 if (has_try_block_holes) {
2490 MonoTryBlockHoleTableJitInfo *table;
2492 jinfo->has_try_block_holes = 1;
2494 table = mono_jit_info_get_try_block_hole_table_info (jinfo);
2497 table->num_holes = (guint16)num_holes;
2498 for (i = 0; i < num_holes; ++i) {
2499 MonoTryBlockHoleJitInfo *hole = &table->holes [i];
2500 hole->clause = decode_value (p, &p);
2501 hole->length = decode_value (p, &p);
2502 hole->offset = decode_value (p, &p);
2506 if (has_arch_eh_jit_info) {
2507 MonoArchEHJitInfo *eh_info;
2509 jinfo->has_arch_eh_info = 1;
2511 eh_info = mono_jit_info_get_arch_eh_info (jinfo);
2512 eh_info->stack_size = decode_value (p, &p);
2516 /* The rest is not needed in async mode */
2517 jinfo->async = TRUE;
2518 jinfo->d.aot_info = amodule;
2523 if (has_generic_jit_info) {
2524 MonoGenericJitInfo *gi;
2527 jinfo->has_generic_jit_info = 1;
2529 gi = mono_jit_info_get_generic_jit_info (jinfo);
2532 gi->nlocs = decode_value (p, &p);
2534 gi->locations = alloc0_jit_info_data (domain, gi->nlocs * sizeof (MonoDwarfLocListEntry), async);
2535 for (i = 0; i < gi->nlocs; ++i) {
2536 MonoDwarfLocListEntry *entry = &gi->locations [i];
2538 entry->is_reg = decode_value (p, &p);
2539 entry->reg = decode_value (p, &p);
2541 entry->offset = decode_value (p, &p);
2543 entry->from = decode_value (p, &p);
2544 entry->to = decode_value (p, &p);
2548 gi->has_this = this_reg != -1;
2549 gi->this_reg = this_reg;
2550 gi->this_offset = this_offset;
2552 gi->has_this = decode_value (p, &p);
2553 gi->this_reg = decode_value (p, &p);
2554 gi->this_offset = decode_value (p, &p);
2558 len = decode_value (p, &p);
2562 jinfo->d.method = decode_resolve_method_ref (amodule, p, &p);
2564 gi->generic_sharing_context = g_new0 (MonoGenericSharingContext, 1);
2565 if (decode_value (p, &p)) {
2568 MonoGenericSharingContext *gsctx = gi->generic_sharing_context;
2570 n = decode_value (p, &p);
2572 gsctx->var_is_vt = alloc0_jit_info_data (domain, sizeof (gboolean) * n, async);
2573 for (i = 0; i < n; ++i)
2574 gsctx->var_is_vt [i] = decode_value (p, &p);
2576 n = decode_value (p, &p);
2578 gsctx->mvar_is_vt = alloc0_jit_info_data (domain, sizeof (gboolean) * n, async);
2579 for (i = 0; i < n; ++i)
2580 gsctx->mvar_is_vt [i] = decode_value (p, &p);
2585 if (method && has_seq_points) {
2586 MonoSeqPointInfo *seq_points;
2587 int il_offset, native_offset, last_il_offset, last_native_offset, j;
2589 int len = decode_value (p, &p);
2591 seq_points = g_malloc0 (sizeof (MonoSeqPointInfo) + (len - MONO_ZERO_LEN_ARRAY) * sizeof (SeqPoint));
2592 seq_points->len = len;
2593 last_il_offset = last_native_offset = 0;
2594 for (i = 0; i < len; ++i) {
2595 SeqPoint *sp = &seq_points->seq_points [i];
2596 il_offset = last_il_offset + decode_value (p, &p);
2597 native_offset = last_native_offset + decode_value (p, &p);
2599 sp->il_offset = il_offset;
2600 sp->native_offset = native_offset;
2602 sp->flags = decode_value (p, &p);
2603 sp->next_len = decode_value (p, &p);
2604 sp->next = g_new (int, sp->next_len);
2605 for (j = 0; j < sp->next_len; ++j)
2606 sp->next [j] = decode_value (p, &p);
2608 last_il_offset = il_offset;
2609 last_native_offset = native_offset;
2612 mono_domain_lock (domain);
2613 g_hash_table_insert (domain_jit_info (domain)->seq_points, method, seq_points);
2614 mono_domain_unlock (domain);
2617 /* Load debug info */
2618 buf_len = decode_value (p, &p);
2620 mono_debug_add_aot_method (domain, method, code, p, buf_len);
2624 int map_size = decode_value (p, &p);
2625 /* The GC map requires 4 bytes of alignment */
2626 while ((guint64)(gsize)p % 4)
2632 if (amodule != jinfo->d.method->klass->image->aot_module) {
2635 ji_to_amodule = g_hash_table_new (NULL, NULL);
2636 g_hash_table_insert (ji_to_amodule, jinfo, amodule);
2644 * mono_aot_get_unwind_info:
2646 * Return a pointer to the DWARF unwind info belonging to JI.
2649 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
2651 MonoAotModule *amodule;
2653 guint8 *code = ji->code_start;
2656 amodule = ji->d.aot_info;
2658 amodule = jinfo_get_method (ji)->klass->image->aot_module;
2660 g_assert (ji->from_aot);
2662 if (!(code >= amodule->code && code <= amodule->code_end)) {
2663 /* ji belongs to a different aot module than amodule */
2665 g_assert (ji_to_amodule);
2666 amodule = g_hash_table_lookup (ji_to_amodule, ji);
2668 g_assert (code >= amodule->code && code <= amodule->code_end);
2672 p = amodule->unwind_info + ji->used_regs;
2673 *unwind_info_len = decode_value (p, &p);
2677 static G_GNUC_UNUSED int
2678 compare_ints (const void *a, const void *b)
2680 return *(gint32*)a - *(gint32*)b;
2684 msort_code_offsets_internal (gint32 *array, int lo, int hi, gint32 *scratch)
2686 int mid = (lo + hi) / 2;
2693 for (i = lo; i < hi; ++i)
2694 if (array [(i * 2)] > array [(i * 2) + 2])
2697 /* Already sorted */
2701 msort_code_offsets_internal (array, lo, mid, scratch);
2702 msort_code_offsets_internal (array, mid + 1, hi, scratch);
2704 if (array [mid * 2] < array [(mid + 1) * 2])
2710 for (i = lo; i <= hi; i ++) {
2711 if (t_lo <= mid && ((t_hi > hi) || array [t_lo * 2] < array [t_hi * 2])) {
2712 scratch [(i * 2)] = array [t_lo * 2];
2713 scratch [(i * 2) + 1] = array [(t_lo *2) + 1];
2716 scratch [(i * 2)] = array [t_hi * 2];
2717 scratch [(i * 2) + 1] = array [(t_hi *2) + 1];
2721 for (i = lo; i <= hi; ++i) {
2722 array [(i * 2)] = scratch [i * 2];
2723 array [(i * 2) + 1] = scratch [(i * 2) + 1];
2728 msort_code_offsets (gint32 *array, int len)
2732 scratch = g_new (gint32, len * 2);
2733 msort_code_offsets_internal (array, 0, len - 1, scratch);
2738 * mono_aot_find_jit_info:
2740 * In async context, the resulting MonoJitInfo will not have its method field set, and it will not be added
2741 * to the jit info tables.
2742 * FIXME: Large sizes in the lock free allocator
2745 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
2747 int pos, left, right, offset, offset1, offset2, code_len;
2748 int method_index, table_len;
2750 MonoAotModule *amodule = image->aot_module;
2753 guint8 *code, *ex_info, *p;
2755 int nmethods = amodule->info.nmethods;
2756 gint32 *code_offsets;
2763 if (domain != mono_get_root_domain ())
2767 async = mono_thread_info_is_async_context ();
2769 offset = (guint8*)addr - amodule->code;
2771 /* Compute a sorted table mapping code offsets to method indexes. */
2772 if (!amodule->sorted_code_offsets) {
2774 code_offsets = g_new0 (gint32, nmethods * 2);
2776 for (i = 0; i < nmethods; ++i) {
2777 /* Skip the -1 entries to speed up sorting */
2778 if (amodule->code_offsets [i] == 0xffffffff)
2780 code_offsets [(offsets_len * 2)] = amodule->code_offsets [i];
2781 code_offsets [(offsets_len *2) + 1] = i;
2784 /* Use a merge sort as this is mostly sorted */
2785 msort_code_offsets (code_offsets, offsets_len);
2786 //qsort (code_offsets, offsets_len, sizeof (gint32) * 2, compare_ints);
2787 for (i = 0; i < offsets_len -1; ++i)
2788 g_assert (code_offsets [(i * 2)] <= code_offsets [(i + 1) * 2]);
2790 amodule->sorted_code_offsets_len = offsets_len;
2791 mono_memory_barrier ();
2792 if (InterlockedCompareExchangePointer ((gpointer*)&amodule->sorted_code_offsets, code_offsets, NULL) != NULL)
2793 /* Somebody got in before us */
2794 g_free (code_offsets);
2797 code_offsets = amodule->sorted_code_offsets;
2798 offsets_len = amodule->sorted_code_offsets_len;
2800 if (offsets_len > 0 && (offset < code_offsets [0] || offset >= (amodule->code_end - amodule->code)))
2803 /* Binary search in the sorted_code_offsets table */
2805 right = offsets_len;
2807 pos = (left + right) / 2;
2809 offset1 = code_offsets [(pos * 2)];
2810 if (pos + 1 == offsets_len)
2811 offset2 = amodule->code_end - amodule->code;
2813 offset2 = code_offsets [(pos + 1) * 2];
2815 if (offset < offset1)
2817 else if (offset >= offset2)
2823 g_assert (offset >= code_offsets [(pos * 2)]);
2824 if (pos + 1 < offsets_len)
2825 g_assert (offset < code_offsets [((pos + 1) * 2)]);
2826 method_index = code_offsets [(pos * 2) + 1];
2828 /* In async mode, jinfo is not added to the normal jit info table, so have to cache it ourselves */
2830 JitInfoMap *table = amodule->async_jit_info_table;
2834 len = table [0].method_index;
2835 for (i = 1; i < len; ++i) {
2836 if (table [i].method_index == method_index)
2837 return table [i].jinfo;
2842 code = &amodule->code [amodule->code_offsets [method_index]];
2843 ex_info = &amodule->blob [mono_aot_get_offset (amodule->ex_info_offsets, method_index)];
2845 if (pos == offsets_len - 1)
2846 code_len = amodule->code_end - code;
2848 code_len = code_offsets [(pos + 1) * 2] - code_offsets [pos * 2];
2850 g_assert ((guint8*)code <= (guint8*)addr && (guint8*)addr < (guint8*)code + code_len);
2852 /* Might be a wrapper/extra method */
2854 if (amodule->extra_methods) {
2856 method = g_hash_table_lookup (amodule->extra_methods, GUINT_TO_POINTER (method_index));
2863 if (method_index >= image->tables [MONO_TABLE_METHOD].rows) {
2865 * This is hit for extra methods which are called directly, so they are
2866 * not in amodule->extra_methods.
2868 table_len = amodule->extra_method_info_offsets [0];
2869 table = amodule->extra_method_info_offsets + 1;
2876 pos = ((left + right) / 2);
2878 g_assert (pos < table_len);
2880 if (table [pos * 2] < method_index)
2882 else if (table [pos * 2] > method_index)
2888 p = amodule->blob + table [(pos * 2) + 1];
2889 method = decode_resolve_method_ref (amodule, p, &p);
2891 /* Happens when a random address is passed in which matches a not-yey called wrapper encoded using its name */
2894 token = mono_metadata_make_token (MONO_TABLE_METHOD, method_index + 1);
2895 method = mono_get_method (image, token, NULL);
2902 //printf ("F: %s\n", mono_method_full_name (method, TRUE));
2904 jinfo = decode_exception_debug_info (amodule, domain, method, ex_info, addr, code, code_len);
2906 g_assert ((guint8*)addr >= (guint8*)jinfo->code_start);
2907 g_assert ((guint8*)addr < (guint8*)jinfo->code_start + jinfo->code_size);
2909 /* Add it to the normal JitInfo tables */
2911 JitInfoMap *old_table, *new_table;
2915 * Use a simple inmutable table with linear search to cache async jit info entries.
2916 * This assumes that the number of entries is small.
2919 /* Copy the table, adding a new entry at the end */
2920 old_table = amodule->async_jit_info_table;
2922 len = old_table[0].method_index;
2925 new_table = alloc0_jit_info_data (domain, (len * 1) * sizeof (JitInfoMap), async);
2927 memcpy (new_table, old_table, len * sizeof (JitInfoMap));
2928 new_table [0].method_index = len + 1;
2929 new_table [len].method_index = method_index;
2930 new_table [len].jinfo = jinfo;
2932 mono_memory_barrier ();
2933 if (InterlockedCompareExchangePointer ((gpointer)&amodule->async_jit_info_table, new_table, old_table) == old_table)
2937 mono_jit_info_table_add (domain, jinfo);
2944 decode_patch (MonoAotModule *aot_module, MonoMemPool *mp, MonoJumpInfo *ji, guint8 *buf, guint8 **endbuf)
2952 case MONO_PATCH_INFO_METHOD:
2953 case MONO_PATCH_INFO_METHOD_JUMP:
2954 case MONO_PATCH_INFO_ICALL_ADDR:
2955 case MONO_PATCH_INFO_METHOD_RGCTX: {
2959 res = decode_method_ref (aot_module, &ref, p, &p);
2963 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)) {
2964 ji->data.target = mono_create_ftnptr (mono_domain_get (), mono_create_jit_trampoline_from_token (ref.image, ref.token));
2965 ji->type = MONO_PATCH_INFO_ABS;
2969 ji->data.method = ref.method;
2971 ji->data.method = mono_get_method (ref.image, ref.token, NULL);
2972 g_assert (ji->data.method);
2973 mono_class_init (ji->data.method->klass);
2977 case MONO_PATCH_INFO_INTERNAL_METHOD:
2978 case MONO_PATCH_INFO_JIT_ICALL_ADDR: {
2979 guint32 len = decode_value (p, &p);
2981 ji->data.name = (char*)p;
2985 case MONO_PATCH_INFO_METHODCONST:
2987 ji->data.method = decode_resolve_method_ref (aot_module, p, &p);
2988 if (!ji->data.method)
2991 case MONO_PATCH_INFO_VTABLE:
2992 case MONO_PATCH_INFO_CLASS:
2993 case MONO_PATCH_INFO_IID:
2994 case MONO_PATCH_INFO_ADJUSTED_IID:
2996 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2997 if (!ji->data.klass)
3000 case MONO_PATCH_INFO_CLASS_INIT:
3001 case MONO_PATCH_INFO_DELEGATE_TRAMPOLINE:
3002 ji->data.klass = decode_klass_ref (aot_module, p, &p);
3003 if (!ji->data.klass)
3006 case MONO_PATCH_INFO_IMAGE:
3007 ji->data.image = load_image (aot_module, decode_value (p, &p), TRUE);
3008 if (!ji->data.image)
3011 case MONO_PATCH_INFO_FIELD:
3012 case MONO_PATCH_INFO_SFLDA:
3014 ji->data.field = decode_field_info (aot_module, p, &p);
3015 if (!ji->data.field)
3018 case MONO_PATCH_INFO_SWITCH:
3019 ji->data.table = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoBBTable));
3020 ji->data.table->table_size = decode_value (p, &p);
3021 table = mono_domain_alloc (mono_domain_get (), sizeof (gpointer) * ji->data.table->table_size);
3022 ji->data.table->table = (MonoBasicBlock**)table;
3023 for (i = 0; i < ji->data.table->table_size; i++)
3024 table [i] = (gpointer)(gssize)decode_value (p, &p);
3026 case MONO_PATCH_INFO_R4: {
3029 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (float));
3030 val = decode_value (p, &p);
3031 *(float*)ji->data.target = *(float*)&val;
3034 case MONO_PATCH_INFO_R8: {
3038 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (double));
3040 val [0] = decode_value (p, &p);
3041 val [1] = decode_value (p, &p);
3042 v = ((guint64)val [1] << 32) | ((guint64)val [0]);
3043 *(double*)ji->data.target = *(double*)&v;
3046 case MONO_PATCH_INFO_LDSTR:
3047 image = load_image (aot_module, decode_value (p, &p), TRUE);
3050 ji->data.token = mono_jump_info_token_new (mp, image, MONO_TOKEN_STRING + decode_value (p, &p));
3052 case MONO_PATCH_INFO_RVA:
3053 case MONO_PATCH_INFO_DECLSEC:
3054 case MONO_PATCH_INFO_LDTOKEN:
3055 case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
3057 image = load_image (aot_module, decode_value (p, &p), TRUE);
3060 ji->data.token = mono_jump_info_token_new (mp, image, decode_value (p, &p));
3062 ji->data.token->has_context = decode_value (p, &p);
3063 if (ji->data.token->has_context) {
3064 gboolean res = decode_generic_context (aot_module, &ji->data.token->context, p, &p);
3069 case MONO_PATCH_INFO_EXC_NAME:
3070 ji->data.klass = decode_klass_ref (aot_module, p, &p);
3071 if (!ji->data.klass)
3073 ji->data.name = ji->data.klass->name;
3075 case MONO_PATCH_INFO_METHOD_REL:
3076 ji->data.offset = decode_value (p, &p);
3078 case MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG:
3079 case MONO_PATCH_INFO_GENERIC_CLASS_INIT:
3080 case MONO_PATCH_INFO_MONITOR_ENTER:
3081 case MONO_PATCH_INFO_MONITOR_EXIT:
3082 case MONO_PATCH_INFO_GC_CARD_TABLE_ADDR:
3083 case MONO_PATCH_INFO_CASTCLASS_CACHE:
3084 case MONO_PATCH_INFO_JIT_TLS_ID:
3086 case MONO_PATCH_INFO_RGCTX_FETCH: {
3088 MonoJumpInfoRgctxEntry *entry;
3089 guint32 offset, val;
3092 offset = decode_value (p, &p);
3093 val = decode_value (p, &p);
3095 entry = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
3096 p2 = aot_module->blob + offset;
3097 entry->method = decode_resolve_method_ref (aot_module, p2, &p2);
3098 entry->in_mrgctx = ((val & 1) > 0) ? TRUE : FALSE;
3099 entry->info_type = (val >> 1) & 0xff;
3100 entry->data = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
3101 entry->data->type = (val >> 9) & 0xff;
3103 res = decode_patch (aot_module, mp, entry->data, p, &p);
3106 ji->data.rgctx_entry = entry;
3109 case MONO_PATCH_INFO_SEQ_POINT_INFO:
3111 case MONO_PATCH_INFO_LLVM_IMT_TRAMPOLINE: {
3112 MonoJumpInfoImtTramp *imt_tramp = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoImtTramp));
3114 imt_tramp->method = decode_resolve_method_ref (aot_module, p, &p);
3115 imt_tramp->vt_offset = decode_value (p, &p);
3117 ji->data.imt_tramp = imt_tramp;
3120 case MONO_PATCH_INFO_SIGNATURE:
3121 ji->data.target = decode_signature (aot_module, p, &p);
3123 case MONO_PATCH_INFO_TLS_OFFSET:
3124 ji->data.target = GINT_TO_POINTER (decode_value (p, &p));
3126 case MONO_PATCH_INFO_GSHAREDVT_CALL: {
3127 MonoJumpInfoGSharedVtCall *info = g_new0 (MonoJumpInfoGSharedVtCall, 1);
3128 info->sig = decode_signature (aot_module, p, &p);
3129 g_assert (info->sig);
3130 info->method = decode_resolve_method_ref (aot_module, p, &p);
3131 g_assert (info->method);
3133 ji->data.target = info;
3136 case MONO_PATCH_INFO_GSHAREDVT_METHOD: {
3137 MonoGSharedVtMethodInfo *info = g_new0 (MonoGSharedVtMethodInfo, 1);
3140 info->method = decode_resolve_method_ref (aot_module, p, &p);
3141 g_assert (info->method);
3142 nentries = decode_value (p, &p);
3143 info->entries = g_ptr_array_new ();
3144 for (i = 0; i < nentries; ++i) {
3145 MonoRuntimeGenericContextInfoTemplate *template = g_new0 (MonoRuntimeGenericContextInfoTemplate, 1);
3147 template->info_type = decode_value (p, &p);
3148 switch (mini_rgctx_info_type_to_patch_info_type (template->info_type)) {
3149 case MONO_PATCH_INFO_CLASS: {
3150 MonoClass *klass = decode_klass_ref (aot_module, p, &p);
3153 template->data = &klass->byval_arg;
3156 case MONO_PATCH_INFO_FIELD:
3157 template->data = decode_field_info (aot_module, p, &p);
3158 if (!template->data)
3162 g_assert_not_reached ();
3166 g_ptr_array_add (info->entries, template);
3168 ji->data.target = info;
3172 g_warning ("unhandled type %d", ji->type);
3173 g_assert_not_reached ();
3184 static MonoJumpInfo*
3185 load_patch_info (MonoAotModule *aot_module, MonoMemPool *mp, int n_patches,
3186 guint32 **got_slots,
3187 guint8 *buf, guint8 **endbuf)
3189 MonoJumpInfo *patches;
3195 patches = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo) * n_patches);
3197 *got_slots = g_malloc (sizeof (guint32) * n_patches);
3199 for (pindex = 0; pindex < n_patches; ++pindex) {
3200 MonoJumpInfo *ji = &patches [pindex];
3205 got_offset = decode_value (p, &p);
3207 if (aot_module->got [got_offset]) {
3208 /* Already loaded */
3209 //printf ("HIT!\n");
3211 shared_p = aot_module->blob + mono_aot_get_offset (aot_module->got_info_offsets, got_offset);
3213 ji->type = decode_value (shared_p, &shared_p);
3215 res = decode_patch (aot_module, mp, ji, shared_p, &shared_p);
3220 (*got_slots) [pindex] = got_offset;
3227 g_free (*got_slots);
3234 register_jump_target_got_slot (MonoDomain *domain, MonoMethod *method, gpointer *got_slot)
3237 * Jump addresses cannot be patched by the trampoline code since it
3238 * does not have access to the caller's address. Instead, we collect
3239 * the addresses of the GOT slots pointing to a method, and patch
3240 * them after the method has been compiled.
3242 MonoJitDomainInfo *info = domain_jit_info (domain);
3245 mono_domain_lock (domain);
3246 if (!info->jump_target_got_slot_hash)
3247 info->jump_target_got_slot_hash = g_hash_table_new (NULL, NULL);
3248 list = g_hash_table_lookup (info->jump_target_got_slot_hash, method);
3249 list = g_slist_prepend (list, got_slot);
3250 g_hash_table_insert (info->jump_target_got_slot_hash, method, list);
3251 mono_domain_unlock (domain);
3257 * Load the method identified by METHOD_INDEX from the AOT image. Return a
3258 * pointer to the native code of the method, or NULL if not found.
3259 * METHOD might not be set if the caller only has the image/token info.
3262 load_method (MonoDomain *domain, MonoAotModule *amodule, MonoImage *image, MonoMethod *method, guint32 token, int method_index)
3265 gboolean from_plt = method == NULL;
3267 int i, pindex, n_patches, used_strings;
3268 gboolean keep_patches = TRUE;
3270 MonoJitInfo *jinfo = NULL;
3271 guint8 *code, *info;
3273 if (mono_profiler_get_events () & MONO_PROFILE_ENTER_LEAVE)
3276 if ((domain != mono_get_root_domain ()) && (!(amodule->info.opts & MONO_OPT_SHARED)))
3277 /* Non shared AOT code can't be used in other appdomains */
3280 if (amodule->out_of_date)
3283 if (amodule->code_offsets [method_index] == 0xffffffff) {
3284 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
3288 method = mono_get_method (image, token, NULL);
3289 full_name = mono_method_full_name (method, TRUE);
3290 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.", full_name);
3296 code = &amodule->code [amodule->code_offsets [method_index]];
3298 info = &amodule->blob [mono_aot_get_offset (amodule->method_info_offsets, method_index)];
3300 if (amodule->thumb_end && code < amodule->thumb_end && ((amodule->info.flags & MONO_AOT_FILE_FLAG_DIRECT_METHOD_ADDRESSES) == 0)) {
3301 /* Convert this into a thumb address */
3302 g_assert ((amodule->code_offsets [method_index] & 0x1) == 0);
3303 code = &amodule->code [amodule->code_offsets [method_index] + 1];
3307 if (!amodule->methods_loaded)
3308 amodule->methods_loaded = g_new0 (guint32, amodule->info.nmethods / 32 + 1);
3311 if ((amodule->methods_loaded [method_index / 32] >> (method_index % 32)) & 0x1)
3314 if (mono_last_aot_method != -1) {
3315 if (mono_jit_stats.methods_aot >= mono_last_aot_method)
3317 else if (mono_jit_stats.methods_aot == mono_last_aot_method - 1) {
3319 method = mono_get_method (image, token, NULL);
3321 char *name = mono_method_full_name (method, TRUE);
3322 printf ("LAST AOT METHOD: %s.\n", name);
3325 printf ("LAST AOT METHOD: %p %d\n", code, method_index);
3333 klass = method->klass;
3334 decode_klass_ref (amodule, p, &p);
3336 klass = decode_klass_ref (amodule, p, &p);
3339 if (amodule->info.opts & MONO_OPT_SHARED)
3340 used_strings = decode_value (p, &p);
3344 for (i = 0; i < used_strings; i++) {
3345 guint token = decode_value (p, &p);
3346 mono_ldstr (mono_get_root_domain (), image, mono_metadata_token_index (token));
3349 if (amodule->info.opts & MONO_OPT_SHARED)
3350 keep_patches = FALSE;
3352 n_patches = decode_value (p, &p);
3354 keep_patches = FALSE;
3357 MonoJumpInfo *patches;
3363 mp = mono_mempool_new ();
3365 patches = load_patch_info (amodule, mp, n_patches, &got_slots, p, &p);
3366 if (patches == NULL)
3369 for (pindex = 0; pindex < n_patches; ++pindex) {
3370 MonoJumpInfo *ji = &patches [pindex];
3372 if (!amodule->got [got_slots [pindex]]) {
3373 amodule->got [got_slots [pindex]] = mono_resolve_patch_target (method, domain, code, ji, TRUE);
3374 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
3375 amodule->got [got_slots [pindex]] = mono_create_ftnptr (domain, amodule->got [got_slots [pindex]]);
3376 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
3377 register_jump_target_got_slot (domain, ji->data.method, &(amodule->got [got_slots [pindex]]));
3379 ji->type = MONO_PATCH_INFO_NONE;
3385 mono_mempool_destroy (mp);
3388 if (mini_get_debug_options ()->load_aot_jit_info_eagerly)
3389 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
3391 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
3395 method = mono_get_method (image, token, NULL);
3397 full_name = mono_method_full_name (method, TRUE);
3400 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
3402 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT FOUND method %s [%p - %p %p]", full_name, code, code + jinfo->code_size, info);
3408 InterlockedIncrement (&mono_jit_stats.methods_aot);
3410 amodule->methods_loaded [method_index / 32] |= 1 << (method_index % 32);
3414 if (method && method->wrapper_type)
3415 g_hash_table_insert (amodule->method_to_code, method, code);
3419 if (mono_profiler_get_events () & MONO_PROFILE_JIT_COMPILATION) {
3423 method = mono_get_method (image, token, NULL);
3426 mono_profiler_method_jit (method);
3427 jinfo = mono_jit_info_table_find (domain, (char*)code);
3429 mono_profiler_method_end_jit (method, jinfo, MONO_PROFILE_OK);
3432 if (from_plt && klass && !klass->generic_container)
3433 mono_runtime_class_init (mono_class_vtable (domain, klass));
3438 /* FIXME: The space in domain->mp is wasted */
3439 if (amodule->info.opts & MONO_OPT_SHARED)
3440 /* No need to cache patches */
3441 mono_mempool_destroy (mp);
3450 find_extra_method_in_amodule (MonoAotModule *amodule, MonoMethod *method)
3452 guint32 table_size, entry_size, hash;
3453 guint32 *table, *entry;
3455 static guint32 n_extra_decodes;
3457 if (!amodule || amodule->out_of_date)
3460 table_size = amodule->extra_method_table [0];
3461 table = amodule->extra_method_table + 1;
3464 hash = mono_aot_method_hash (method) % table_size;
3466 entry = &table [hash * entry_size];
3473 guint32 key = entry [0];
3474 guint32 value = entry [1];
3475 guint32 next = entry [entry_size - 1];
3479 p = amodule->blob + key;
3483 if (!amodule->method_ref_to_method)
3484 amodule->method_ref_to_method = g_hash_table_new (NULL, NULL);
3485 m = g_hash_table_lookup (amodule->method_ref_to_method, p);
3488 m = decode_resolve_method_ref_with_target (amodule, method, p, &p);
3491 g_hash_table_insert (amodule->method_ref_to_method, orig_p, m);
3500 /* Special case: wrappers of shared generic methods */
3501 if (m && method->wrapper_type && m->wrapper_type == m->wrapper_type &&
3502 method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
3503 MonoMethod *w1 = mono_marshal_method_from_wrapper (method);
3504 MonoMethod *w2 = mono_marshal_method_from_wrapper (m);
3506 if (w1->is_inflated && ((MonoMethodInflated *)w1)->declaring == w2) {
3512 /* Methods decoded needlessly */
3514 //printf ("%d %s %s %p\n", n_extra_decodes, mono_method_full_name (method, TRUE), mono_method_full_name (m, TRUE), orig_p);
3519 entry = &table [next * entry_size];
3528 add_module_cb (gpointer key, gpointer value, gpointer user_data)
3530 g_ptr_array_add ((GPtrArray*)user_data, value);
3534 * find_extra_method:
3536 * Try finding METHOD in the extra_method table in all AOT images.
3537 * Return its method index, or 0xffffff if not found. Set OUT_AMODULE to the AOT
3538 * module where the method was found.
3541 find_extra_method (MonoMethod *method, MonoAotModule **out_amodule)
3547 /* Try the method's module first */
3548 *out_amodule = method->klass->image->aot_module;
3549 index = find_extra_method_in_amodule (method->klass->image->aot_module, method);
3550 if (index != 0xffffff)
3554 * Try all other modules.
3555 * This is needed because generic instances klass->image points to the image
3556 * containing the generic definition, but the native code is generated to the
3557 * AOT image which contains the reference.
3560 /* Make a copy to avoid doing the search inside the aot lock */
3561 modules = g_ptr_array_new ();
3563 g_hash_table_foreach (aot_modules, add_module_cb, modules);
3567 for (i = 0; i < modules->len; ++i) {
3568 MonoAotModule *amodule = g_ptr_array_index (modules, i);
3570 if (amodule != method->klass->image->aot_module)
3571 index = find_extra_method_in_amodule (amodule, method);
3572 if (index != 0xffffff) {
3573 *out_amodule = amodule;
3578 g_ptr_array_free (modules, TRUE);
3584 * mono_aot_get_method:
3586 * Return a pointer to the AOTed native code for METHOD if it can be found,
3588 * On platforms with function pointers, this doesn't return a function pointer.
3591 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
3593 MonoClass *klass = method->klass;
3594 guint32 method_index;
3595 MonoAotModule *amodule = klass->image->aot_module;
3601 if (amodule->out_of_date)
3604 if ((method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
3605 (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
3606 (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
3607 (method->flags & METHOD_ATTRIBUTE_ABSTRACT))
3611 * Use the original method instead of its invoke-with-check wrapper.
3612 * This is not a problem when using full-aot, since it doesn't support
3615 if (mono_aot_only && method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)
3616 return mono_aot_get_method (domain, mono_marshal_method_from_wrapper (method));
3618 g_assert (klass->inited);
3620 /* Find method index */
3621 method_index = 0xffffff;
3622 if (method->is_inflated && !method->wrapper_type && mono_method_is_generic_sharable_full (method, FALSE, FALSE, FALSE)) {
3624 * For generic methods, we store the fully shared instance in place of the
3627 method = mono_method_get_declaring_generic_method (method);
3628 method_index = mono_metadata_token_index (method->token) - 1;
3629 } else if (method->is_inflated || !method->token) {
3630 /* This hash table is used to avoid the slower search in the extra_method_table in the AOT image */
3632 code = g_hash_table_lookup (amodule->method_to_code, method);
3637 method_index = find_extra_method (method, &amodule);
3639 * Special case the ICollection<T> wrappers for arrays, as they cannot
3640 * be statically enumerated, and each wrapper ends up calling the same
3643 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED && method->klass->rank && strstr (method->name, "System.Collections.Generic")) {
3644 MonoMethod *m = mono_aot_get_array_helper_from_wrapper (method);
3646 code = mono_aot_get_method (domain, m);
3648 if (mono_method_needs_static_rgctx_invoke (m, FALSE)) {
3649 code = mono_create_static_rgctx_trampoline (m, mono_create_ftnptr (domain, code));
3650 /* The call above returns an ftnptr */
3651 code = mono_get_addr_from_ftnptr (code);
3659 * Special case Array.GetGenericValueImpl which is a generic icall.
3660 * Generic sharing currently can't handle it, but the icall returns data using
3661 * an out parameter, so the managed-to-native wrappers can share the same code.
3663 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass == mono_defaults.array_class && !strcmp (method->name, "GetGenericValueImpl")) {
3665 MonoGenericContext ctx;
3666 MonoType *args [16];
3668 if (mono_method_signature (method)->params [1]->type == MONO_TYPE_OBJECT)
3669 /* Avoid recursion */
3672 m = mono_class_get_method_from_name (mono_defaults.array_class, "GetGenericValueImpl", 2);
3675 memset (&ctx, 0, sizeof (ctx));
3676 args [0] = &mono_defaults.object_class->byval_arg;
3677 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
3679 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method (m, &ctx), TRUE, TRUE);
3682 * Get the code for the <object> instantiation which should be emitted into
3683 * the mscorlib aot image by the AOT compiler.
3685 code = mono_aot_get_method (domain, m);
3690 /* Same for CompareExchange<T> and Exchange<T> */
3691 /* Same for Volatile.Read<T>/Write<T> */
3692 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass->image == mono_defaults.corlib &&
3693 ((!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])) ||
3694 (!strcmp (method->klass->name_space, "System.Threading") && !strcmp (method->klass->name, "Volatile") && (!strcmp (method->name, "Read") && MONO_TYPE_IS_REFERENCE (mono_method_signature (method)->ret))) ||
3695 (!strcmp (method->klass->name_space, "System.Threading") && !strcmp (method->klass->name, "Volatile") && (!strcmp (method->name, "Write") && MONO_TYPE_IS_REFERENCE (mono_method_signature (method)->params [1]))))) {
3697 MonoGenericContext ctx;
3698 MonoType *args [16];
3699 gpointer iter = NULL;
3701 while ((m = mono_class_get_methods (method->klass, &iter))) {
3702 if (mono_method_signature (m)->generic_param_count && !strcmp (m->name, method->name))
3707 memset (&ctx, 0, sizeof (ctx));
3708 args [0] = &mono_defaults.object_class->byval_arg;
3709 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
3711 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method (m, &ctx), TRUE, TRUE);
3713 /* Avoid recursion */
3718 * Get the code for the <object> instantiation which should be emitted into
3719 * the mscorlib aot image by the AOT compiler.
3721 code = mono_aot_get_method (domain, m);
3726 if (method_index == 0xffffff && method->is_inflated && mono_method_is_generic_sharable_full (method, FALSE, TRUE, FALSE)) {
3727 /* Partial sharing */
3730 shared = mini_get_shared_method (method);
3731 method_index = find_extra_method (shared, &amodule);
3732 if (method_index != 0xffffff)
3736 if (method_index == 0xffffff && method->is_inflated && mono_method_is_generic_sharable_full (method, FALSE, FALSE, TRUE)) {
3738 /* Use the all-vt shared method since this is what was AOTed */
3739 method_index = find_extra_method (mini_get_shared_method_full (method, TRUE, TRUE), &amodule);
3740 if (method_index != 0xffffff)
3741 method = mini_get_shared_method_full (method, TRUE, FALSE);
3744 if (method_index == 0xffffff) {
3745 if (mono_aot_only && mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
3748 full_name = mono_method_full_name (method, TRUE);
3749 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.\n", full_name);
3755 if (method_index == 0xffffff)
3758 /* Needed by find_jit_info */
3760 if (!amodule->extra_methods)
3761 amodule->extra_methods = g_hash_table_new (NULL, NULL);
3762 g_hash_table_insert (amodule->extra_methods, GUINT_TO_POINTER (method_index), method);
3766 method_index = mono_metadata_token_index (method->token) - 1;
3769 return load_method (domain, amodule, klass->image, method, method->token, method_index);
3773 * Same as mono_aot_get_method, but we try to avoid loading any metadata from the
3777 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
3779 MonoAotModule *aot_module = image->aot_module;
3785 method_index = mono_metadata_token_index (token) - 1;
3787 return load_method (domain, aot_module, image, NULL, token, method_index);
3793 } IsGotEntryUserData;
3796 check_is_got_entry (gpointer key, gpointer value, gpointer user_data)
3798 IsGotEntryUserData *data = (IsGotEntryUserData*)user_data;
3799 MonoAotModule *aot_module = (MonoAotModule*)value;
3801 if (aot_module->got && (data->addr >= (guint8*)(aot_module->got)) && (data->addr < (guint8*)(aot_module->got + aot_module->info.got_size)))
3806 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
3808 IsGotEntryUserData user_data;
3813 user_data.addr = addr;
3814 user_data.res = FALSE;
3816 g_hash_table_foreach (aot_modules, check_is_got_entry, &user_data);
3819 return user_data.res;
3824 MonoAotModule *module;
3825 } FindAotModuleUserData;
3828 find_aot_module_cb (gpointer key, gpointer value, gpointer user_data)
3830 FindAotModuleUserData *data = (FindAotModuleUserData*)user_data;
3831 MonoAotModule *aot_module = (MonoAotModule*)value;
3833 if ((data->addr >= (guint8*)(aot_module->code)) && (data->addr < (guint8*)(aot_module->code_end)))
3834 data->module = aot_module;
3837 static inline MonoAotModule*
3838 find_aot_module (guint8 *code)
3840 FindAotModuleUserData user_data;
3845 /* Reading these need no locking */
3846 if (((gsize)code < aot_code_low_addr) || ((gsize)code > aot_code_high_addr))
3849 user_data.addr = code;
3850 user_data.module = NULL;
3853 g_hash_table_foreach (aot_modules, find_aot_module_cb, &user_data);
3856 return user_data.module;
3860 mono_aot_patch_plt_entry (guint8 *code, gpointer *got, mgreg_t *regs, guint8 *addr)
3863 * Since AOT code is only used in the root domain,
3864 * mono_domain_get () != mono_get_root_domain () means the calling method
3865 * is AppDomain:InvokeInDomain, so this is the same check as in
3866 * mono_method_same_domain () but without loading the metadata for the method.
3868 if (mono_domain_get () == mono_get_root_domain ())
3869 mono_arch_patch_plt_entry (code, got, regs, addr);
3873 * mono_aot_plt_resolve:
3875 * This function is called by the entries in the PLT to resolve the actual method that
3876 * needs to be called. It returns a trampoline to the method and patches the PLT entry.
3877 * Returns NULL if the something cannot be loaded.
3880 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
3882 #ifdef MONO_ARCH_AOT_SUPPORTED
3883 guint8 *p, *target, *plt_entry;
3885 MonoAotModule *module = (MonoAotModule*)aot_module;
3886 gboolean res, no_ftnptr = FALSE;
3888 gboolean using_gsharedvt = FALSE;
3890 //printf ("DYN: %p %d\n", aot_module, plt_info_offset);
3892 p = &module->blob [plt_info_offset];
3894 ji.type = decode_value (p, &p);
3896 mp = mono_mempool_new_size (512);
3897 res = decode_patch (module, mp, &ji, p, &p);
3900 mono_mempool_destroy (mp);
3904 #ifdef MONO_ARCH_GSHAREDVT_SUPPORTED
3905 using_gsharedvt = TRUE;
3909 * Avoid calling resolve_patch_target in the full-aot case if possible, since
3910 * it would create a trampoline, and we don't need that.
3911 * We could do this only if the method does not need the special handling
3912 * in mono_magic_trampoline ().
3914 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) &&
3915 !mono_method_needs_static_rgctx_invoke (ji.data.method, FALSE) && !using_gsharedvt) {
3916 target = mono_jit_compile_method (ji.data.method);
3919 target = mono_resolve_patch_target (NULL, mono_domain_get (), NULL, &ji, TRUE);
3923 * The trampoline expects us to return a function descriptor on platforms which use
3924 * it, but resolve_patch_target returns a direct function pointer for some type of
3925 * patches, so have to translate between the two.
3926 * FIXME: Clean this up, but how ?
3928 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) {
3929 /* These should already have a function descriptor */
3930 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3931 /* Our function descriptors have a 0 environment, gcc created ones don't */
3932 if (ji.type != MONO_PATCH_INFO_INTERNAL_METHOD && ji.type != MONO_PATCH_INFO_JIT_ICALL_ADDR && ji.type != MONO_PATCH_INFO_ICALL_ADDR)
3933 g_assert (((gpointer*)target) [2] == 0);
3936 } else if (!no_ftnptr) {
3937 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3938 g_assert (((gpointer*)target) [2] != 0);
3940 target = mono_create_ftnptr (mono_domain_get (), target);
3943 mono_mempool_destroy (mp);
3945 /* Patch the PLT entry with target which might be the actual method not a trampoline */
3946 plt_entry = mono_aot_get_plt_entry (code);
3947 g_assert (plt_entry);
3948 mono_aot_patch_plt_entry (plt_entry, module->got, NULL, target);
3952 g_assert_not_reached ();
3960 * Initialize the PLT table of the AOT module. Called lazily when the first AOT
3961 * method in the module is loaded to avoid committing memory by writing to it.
3962 * LOCKING: Assumes the AOT lock is held.
3965 init_plt (MonoAotModule *amodule)
3970 if (amodule->plt_inited)
3973 tramp = mono_create_specific_trampoline (amodule, MONO_TRAMPOLINE_AOT_PLT, mono_get_root_domain (), NULL);
3976 * Initialize the PLT entries in the GOT to point to the default targets.
3979 tramp = mono_create_ftnptr (mono_domain_get (), tramp);
3980 for (i = 1; i < amodule->info.plt_size; ++i)
3981 /* All the default entries point to the AOT trampoline */
3982 ((gpointer*)amodule->got)[amodule->info.plt_got_offset_base + i] = tramp;
3984 amodule->plt_inited = TRUE;
3988 * mono_aot_get_plt_entry:
3990 * Return the address of the PLT entry called by the code at CODE if exists.
3993 mono_aot_get_plt_entry (guint8 *code)
3995 MonoAotModule *amodule = find_aot_module (code);
3996 guint8 *target = NULL;
4002 if (amodule->thumb_end && code < amodule->thumb_end) {
4003 return mono_arm_get_thumb_plt_entry (code);
4007 #ifdef MONO_ARCH_AOT_SUPPORTED
4008 target = mono_arch_get_call_target (code);
4010 g_assert_not_reached ();
4014 while (target != NULL) {
4015 if ((target >= (guint8*)(amodule->plt)) && (target < (guint8*)(amodule->plt_end)))
4018 // Add 4 since mono_arch_get_call_target assumes we're passing
4019 // the instruction after the actual branch instruction.
4020 target = mono_arch_get_call_target (target + 4);
4025 if ((target >= (guint8*)(amodule->plt)) && (target < (guint8*)(amodule->plt_end)))
4033 * mono_aot_get_plt_info_offset:
4035 * Return the PLT info offset belonging to the plt entry called by CODE.
4038 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
4040 guint8 *plt_entry = mono_aot_get_plt_entry (code);
4042 g_assert (plt_entry);
4044 /* The offset is embedded inside the code after the plt entry */
4045 #ifdef MONO_ARCH_AOT_SUPPORTED
4046 return mono_arch_get_plt_info_offset (plt_entry, regs, code);
4048 g_assert_not_reached ();
4054 mono_create_ftnptr_malloc (guint8 *code)
4056 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
4057 MonoPPCFunctionDescriptor *ftnptr = g_malloc0 (sizeof (MonoPPCFunctionDescriptor));
4059 ftnptr->code = code;
4070 * mono_aot_register_jit_icall:
4072 * Register a JIT icall which is called by trampolines in full-aot mode. This should
4073 * be called from mono_arch_init () during startup.
4076 mono_aot_register_jit_icall (const char *name, gpointer addr)
4078 /* No need for locking */
4079 if (!aot_jit_icall_hash)
4080 aot_jit_icall_hash = g_hash_table_new (g_str_hash, g_str_equal);
4081 g_hash_table_insert (aot_jit_icall_hash, (char*)name, addr);
4085 * load_function_full:
4087 * Load the function named NAME from the aot image.
4090 load_function_full (MonoAotModule *amodule, const char *name, MonoTrampInfo **out_tinfo)
4094 int n_patches, pindex;
4097 guint32 info_offset;
4101 symbol = g_strdup_printf ("%s", name);
4102 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&code);
4105 g_error ("Symbol '%s' not found in AOT file '%s'.\n", name, amodule->aot_name);
4107 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT FOUND function '%s' in AOT file '%s'.", name, amodule->aot_name);
4111 symbol = g_strdup_printf ("%s_p", name);
4112 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&p);
4115 /* Nothing to patch */
4118 info_offset = *(guint32*)p;
4120 MonoTrampInfo *tinfo;
4121 guint32 code_size, uw_info_len, uw_offset;
4123 /* Construct a MonoTrampInfo from the data in the AOT image */
4125 p += sizeof (guint32);
4126 code_size = *(guint32*)p;
4127 p += sizeof (guint32);
4128 uw_offset = *(guint32*)p;
4129 uw_info = amodule->unwind_info + uw_offset;
4130 uw_info_len = decode_value (uw_info, &uw_info);
4132 tinfo = g_new0 (MonoTrampInfo, 1);
4134 tinfo->code_size = code_size;
4135 tinfo->uw_info = uw_info;
4136 tinfo->uw_info_len = uw_info_len;
4141 p = amodule->blob + info_offset;
4143 /* Similar to mono_aot_load_method () */
4145 n_patches = decode_value (p, &p);
4148 MonoJumpInfo *patches;
4151 mp = mono_mempool_new ();
4153 patches = load_patch_info (amodule, mp, n_patches, &got_slots, p, &p);
4156 for (pindex = 0; pindex < n_patches; ++pindex) {
4157 MonoJumpInfo *ji = &patches [pindex];
4160 if (amodule->got [got_slots [pindex]])
4164 * When this code is executed, the runtime may not be initalized yet, so
4165 * resolve the patch info by hand.
4167 if (ji->type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
4168 if (!strcmp (ji->data.name, "mono_get_lmf_addr")) {
4169 target = mono_get_lmf_addr;
4170 } else if (!strcmp (ji->data.name, "mono_thread_force_interruption_checkpoint")) {
4171 target = mono_thread_force_interruption_checkpoint;
4172 } else if (!strcmp (ji->data.name, "mono_exception_from_token")) {
4173 target = mono_exception_from_token;
4174 } else if (!strcmp (ji->data.name, "mono_throw_exception")) {
4175 target = mono_get_throw_exception ();
4176 } else if (strstr (ji->data.name, "trampoline_func_") == ji->data.name) {
4177 int tramp_type2 = atoi (ji->data.name + strlen ("trampoline_func_"));
4178 target = (gpointer)mono_get_trampoline_func (tramp_type2);
4179 } else if (strstr (ji->data.name, "specific_trampoline_lazy_fetch_") == ji->data.name) {
4180 /* atoll is needed because the the offset is unsigned */
4184 res = sscanf (ji->data.name, "specific_trampoline_lazy_fetch_%u", &slot);
4185 g_assert (res == 1);
4186 target = mono_create_specific_trampoline (GUINT_TO_POINTER (slot), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, mono_get_root_domain (), NULL);
4187 target = mono_create_ftnptr_malloc (target);
4188 } else if (!strcmp (ji->data.name, "specific_trampoline_monitor_enter")) {
4189 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_MONITOR_ENTER, mono_get_root_domain (), NULL);
4190 target = mono_create_ftnptr_malloc (target);
4191 } else if (!strcmp (ji->data.name, "specific_trampoline_monitor_exit")) {
4192 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_MONITOR_EXIT, mono_get_root_domain (), NULL);
4193 target = mono_create_ftnptr_malloc (target);
4194 } else if (!strcmp (ji->data.name, "specific_trampoline_generic_class_init")) {
4195 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_GENERIC_CLASS_INIT, mono_get_root_domain (), NULL);
4196 target = mono_create_ftnptr_malloc (target);
4197 } else if (!strcmp (ji->data.name, "mono_thread_get_and_clear_pending_exception")) {
4198 target = mono_thread_get_and_clear_pending_exception;
4199 } else if (strstr (ji->data.name, "generic_trampoline_")) {
4200 target = mono_aot_get_trampoline (ji->data.name);
4201 } else if (aot_jit_icall_hash && g_hash_table_lookup (aot_jit_icall_hash, ji->data.name)) {
4202 /* Registered by mono_arch_init () */
4203 target = g_hash_table_lookup (aot_jit_icall_hash, ji->data.name);
4205 fprintf (stderr, "Unknown relocation '%s'\n", ji->data.name);
4206 g_assert_not_reached ();
4210 /* Hopefully the code doesn't have patches which need method or
4213 target = mono_resolve_patch_target (NULL, NULL, code, ji, FALSE);
4217 amodule->got [got_slots [pindex]] = target;
4222 mono_mempool_destroy (mp);
4229 load_function (MonoAotModule *amodule, const char *name)
4231 return load_function_full (amodule, name, NULL);
4235 * Return the trampoline identified by NAME from the mscorlib AOT file.
4236 * On ppc64, this returns a function descriptor.
4239 mono_aot_get_trampoline_full (const char *name, MonoTrampInfo **out_tinfo)
4242 MonoAotModule *amodule;
4244 image = mono_defaults.corlib;
4247 amodule = image->aot_module;
4250 return mono_create_ftnptr_malloc (load_function_full (amodule, name, out_tinfo));
4254 mono_aot_get_trampoline (const char *name)
4256 return mono_aot_get_trampoline_full (name, NULL);
4260 #include <mach/mach.h>
4262 static TrampolinePage* trampoline_pages [MONO_AOT_TRAMP_NUM];
4263 /* these sizes are for ARM code, parametrize if porting to other architectures (see arch_emit_specific_trampoline_pages)
4264 * trampoline size is assumed to be 8 bytes below as well (8 is the minimum for 32 bit archs, since we need to store
4265 * two pointers for trampoline in the data page).
4266 * the minimum for the common code must be at least sizeof(TrampolinePage), since we store the page info at the
4267 * beginning of the data page.
4269 static const int trampolines_pages_code_offsets [MONO_AOT_TRAMP_NUM] = {16, 16, 72, 16};
4271 static unsigned char*
4272 get_new_trampoline_from_page (int tramp_type)
4274 MonoAotModule *amodule;
4276 TrampolinePage *page;
4279 vm_address_t addr, taddr;
4281 vm_prot_t prot, max_prot;
4283 unsigned char *code;
4285 mono_aot_page_lock ();
4286 page = trampoline_pages [tramp_type];
4287 if (page && page->trampolines < page->trampolines_end) {
4288 code = page->trampolines;
4289 page->trampolines += 8;
4290 mono_aot_page_unlock ();
4293 mono_aot_page_unlock ();
4294 psize = mono_pagesize ();
4295 /* the trampoline template page is in the mscorlib module */
4296 image = mono_defaults.corlib;
4299 amodule = image->aot_module;
4302 if (tramp_type == MONO_AOT_TRAMP_SPECIFIC)
4303 tpage = load_function (amodule, "specific_trampolines_page");
4304 else if (tramp_type == MONO_AOT_TRAMP_STATIC_RGCTX)
4305 tpage = load_function (amodule, "rgctx_trampolines_page");
4306 else if (tramp_type == MONO_AOT_TRAMP_IMT_THUNK)
4307 tpage = load_function (amodule, "imt_trampolines_page");
4308 else if (tramp_type == MONO_AOT_TRAMP_GSHAREDVT_ARG)
4309 tpage = load_function (amodule, "gsharedvt_arg_trampolines_page");
4311 g_error ("Incorrect tramp type for trampolines page");
4313 /*g_warning ("loaded trampolines page at %x", tpage);*/
4315 /* avoid the unlikely case of looping forever */
4318 while (page == NULL && count-- > 0) {
4320 /* allocate two contiguous pages of memory: the first page will contain the data (like a local constant pool)
4321 * while the second will contain the trampolines.
4323 ret = vm_allocate (mach_task_self (), &addr, psize * 2, VM_FLAGS_ANYWHERE);
4324 if (ret != KERN_SUCCESS) {
4325 g_error ("Cannot allocate memory for trampolines: %d", ret);
4328 /*g_warning ("allocated trampoline double page at %x", addr);*/
4329 /* replace the second page with a remapped trampoline page */
4330 taddr = addr + psize;
4331 vm_deallocate (mach_task_self (), taddr, psize);
4332 ret = vm_remap (mach_task_self (), &taddr, psize, 0, FALSE, mach_task_self(), (vm_address_t)tpage, FALSE, &prot, &max_prot, VM_INHERIT_SHARE);
4333 if (ret != KERN_SUCCESS) {
4334 /* someone else got the page, try again */
4335 vm_deallocate (mach_task_self (), addr, psize);
4338 /*g_warning ("remapped trampoline page at %x", taddr);*/
4340 mono_aot_page_lock ();
4341 page = trampoline_pages [tramp_type];
4342 /* some other thread already allocated, so use that to avoid wasting memory */
4343 if (page && page->trampolines < page->trampolines_end) {
4344 code = page->trampolines;
4345 page->trampolines += 8;
4346 mono_aot_page_unlock ();
4347 vm_deallocate (mach_task_self (), addr, psize);
4348 vm_deallocate (mach_task_self (), taddr, psize);
4351 page = (TrampolinePage*)addr;
4352 page->next = trampoline_pages [tramp_type];
4353 trampoline_pages [tramp_type] = page;
4354 page->trampolines = (void*)(taddr + trampolines_pages_code_offsets [tramp_type]);
4355 page->trampolines_end = (void*)(taddr + psize);
4356 code = page->trampolines;
4357 page->trampolines += 8;
4358 mono_aot_page_unlock ();
4361 g_error ("Cannot allocate more trampoline pages: %d", ret);
4366 static unsigned char*
4367 get_new_trampoline_from_page (int tramp_type)
4369 g_error ("Page trampolines not supported.");
4376 get_new_specific_trampoline_from_page (gpointer tramp, gpointer arg)
4381 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_SPECIFIC);
4383 data = (gpointer*)((char*)code - mono_pagesize ());
4386 /*g_warning ("new trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
4392 get_new_rgctx_trampoline_from_page (gpointer tramp, gpointer arg)
4397 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_STATIC_RGCTX);
4399 data = (gpointer*)((char*)code - mono_pagesize ());
4402 /*g_warning ("new rgctx trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
4408 get_new_imt_trampoline_from_page (gpointer arg)
4413 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_IMT_THUNK);
4415 data = (gpointer*)((char*)code - mono_pagesize ());
4417 /*g_warning ("new imt trampoline at %p for data %p, (stored at %p)", code, arg, data);*/
4423 get_new_gsharedvt_arg_trampoline_from_page (gpointer tramp, gpointer arg)
4428 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_GSHAREDVT_ARG);
4430 data = (gpointer*)((char*)code - mono_pagesize ());
4433 /*g_warning ("new rgctx trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
4437 /* Return a given kind of trampoline */
4439 get_numerous_trampoline (MonoAotTrampoline tramp_type, int n_got_slots, MonoAotModule **out_amodule, guint32 *got_offset, guint32 *out_tramp_size)
4441 MonoAotModule *amodule;
4442 int index, tramp_size;
4445 /* Currently, we keep all trampolines in the mscorlib AOT image */
4446 image = mono_defaults.corlib;
4451 amodule = image->aot_module;
4454 *out_amodule = amodule;
4457 #define MONOTOUCH_TRAMPOLINES_ERROR ". See http://docs.xamarin.com/ios/troubleshooting for instruction on how to fix this condition"
4459 #define MONOTOUCH_TRAMPOLINES_ERROR ""
4461 if (amodule->trampoline_index [tramp_type] == amodule->info.num_trampolines [tramp_type]) {
4462 g_error ("Ran out of trampolines of type %d in '%s' (%d)%s\n",
4463 tramp_type, image->name, amodule->info.num_trampolines [tramp_type], MONOTOUCH_TRAMPOLINES_ERROR);
4465 index = amodule->trampoline_index [tramp_type] ++;
4469 *got_offset = amodule->info.trampoline_got_offset_base [tramp_type] + (index * n_got_slots);
4471 tramp_size = amodule->info.trampoline_size [tramp_type];
4474 *out_tramp_size = tramp_size;
4476 return amodule->trampolines [tramp_type] + (index * tramp_size);
4480 * Return a specific trampoline from the AOT file.
4483 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
4485 MonoAotModule *amodule;
4486 guint32 got_offset, tramp_size;
4487 guint8 *code, *tramp;
4488 static gpointer generic_trampolines [MONO_TRAMPOLINE_NUM];
4489 static gboolean inited;
4490 static guint32 num_trampolines;
4496 mono_counters_register ("Specific trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &num_trampolines);
4505 if (!generic_trampolines [tramp_type]) {
4508 symbol = mono_get_generic_trampoline_name (tramp_type);
4509 generic_trampolines [tramp_type] = mono_aot_get_trampoline (symbol);
4513 tramp = generic_trampolines [tramp_type];
4516 if (USE_PAGE_TRAMPOLINES) {
4517 code = get_new_specific_trampoline_from_page (tramp, arg1);
4520 code = get_numerous_trampoline (MONO_AOT_TRAMP_SPECIFIC, 2, &amodule, &got_offset, &tramp_size);
4522 amodule->got [got_offset] = tramp;
4523 amodule->got [got_offset + 1] = arg1;
4527 *code_len = tramp_size;
4533 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
4535 MonoAotModule *amodule;
4539 if (USE_PAGE_TRAMPOLINES) {
4540 code = get_new_rgctx_trampoline_from_page (addr, ctx);
4542 code = get_numerous_trampoline (MONO_AOT_TRAMP_STATIC_RGCTX, 2, &amodule, &got_offset, NULL);
4544 amodule->got [got_offset] = ctx;
4545 amodule->got [got_offset + 1] = addr;
4548 /* The caller expects an ftnptr */
4549 return mono_create_ftnptr (mono_domain_get (), code);
4553 mono_aot_get_unbox_trampoline (MonoMethod *method)
4555 guint32 method_index = mono_metadata_token_index (method->token) - 1;
4556 MonoAotModule *amodule;
4558 guint32 *ut, *ut_end, *entry;
4559 int low, high, entry_index;
4561 if (method->is_inflated && !mono_method_is_generic_sharable_full (method, FALSE, FALSE, FALSE)) {
4562 method_index = find_extra_method (method, &amodule);
4563 if (method_index == 0xffffff && mono_method_is_generic_sharable_full (method, FALSE, FALSE, TRUE)) {
4564 MonoMethod *shared = mini_get_shared_method_full (method, TRUE, TRUE);
4565 method_index = find_extra_method (shared, &amodule);
4567 g_assert (method_index != 0xffffff);
4569 amodule = method->klass->image->aot_module;
4573 ut = amodule->unbox_trampolines;
4574 ut_end = amodule->unbox_trampolines_end;
4576 /* Do a binary search in the sorted table */
4579 high = (ut_end - ut) / 2;
4580 while (low < high) {
4581 entry_index = (low + high) / 2;
4582 entry = &ut [(entry_index * 2)];
4583 if (entry [0] < method_index) {
4584 low = entry_index + 1;
4585 } else if (entry [0] > method_index) {
4588 if (amodule->info.flags & MONO_AOT_FILE_FLAG_DIRECT_METHOD_ADDRESSES)
4589 code = get_arm_bl_target (entry + 1);
4591 code = amodule->code + entry [1];
4597 /* The caller expects an ftnptr */
4598 return mono_create_ftnptr (mono_domain_get (), code);
4602 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
4606 MonoAotModule *amodule = mono_defaults.corlib->aot_module;
4607 guint32 index = MONO_RGCTX_SLOT_INDEX (slot);
4608 static int count = 0;
4611 if (index >= amodule->info.num_rgctx_fetch_trampolines) {
4612 static gpointer addr;
4616 * Use the general version of the rgctx fetch trampoline. It receives a pair of <slot, trampoline> in the rgctx arg reg.
4619 addr = load_function (amodule, "rgctx_fetch_trampoline_general");
4620 info = mono_domain_alloc0 (mono_get_root_domain (), sizeof (gpointer) * 2);
4621 info [0] = GUINT_TO_POINTER (slot);
4622 info [1] = mono_create_specific_trampoline (GUINT_TO_POINTER (slot), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, mono_get_root_domain (), NULL);
4623 code = mono_aot_get_static_rgctx_trampoline (info, addr);
4624 return mono_create_ftnptr (mono_domain_get (), code);
4627 symbol = mono_get_rgctx_fetch_trampoline_name (slot);
4628 code = load_function (mono_defaults.corlib->aot_module, symbol);
4630 /* The caller expects an ftnptr */
4631 return mono_create_ftnptr (mono_domain_get (), code);
4635 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
4640 int i, index, real_count;
4641 MonoAotModule *amodule;
4644 for (i = 0; i < count; ++i) {
4645 MonoIMTCheckItem *item = imt_entries [i];
4647 if (item->is_equals)
4651 /* Save the entries into an array */
4652 buf = mono_domain_alloc (domain, (real_count + 1) * 2 * sizeof (gpointer));
4654 for (i = 0; i < count; ++i) {
4655 MonoIMTCheckItem *item = imt_entries [i];
4657 if (!item->is_equals)
4660 g_assert (item->key);
4662 buf [(index * 2)] = item->key;
4663 if (item->has_target_code) {
4664 gpointer *p = mono_domain_alloc (domain, sizeof (gpointer));
4665 *p = item->value.target_code;
4666 buf [(index * 2) + 1] = p;
4668 buf [(index * 2) + 1] = &(vtable->vtable [item->value.vtable_slot]);
4672 buf [(index * 2)] = NULL;
4673 buf [(index * 2) + 1] = fail_tramp;
4675 if (USE_PAGE_TRAMPOLINES) {
4676 code = get_new_imt_trampoline_from_page (buf);
4678 code = get_numerous_trampoline (MONO_AOT_TRAMP_IMT_THUNK, 1, &amodule, &got_offset, NULL);
4680 amodule->got [got_offset] = buf;
4687 mono_aot_get_gsharedvt_arg_trampoline (gpointer arg, gpointer addr)
4689 MonoAotModule *amodule;
4693 if (USE_PAGE_TRAMPOLINES) {
4694 code = get_new_gsharedvt_arg_trampoline_from_page (addr, arg);
4696 code = get_numerous_trampoline (MONO_AOT_TRAMP_GSHAREDVT_ARG, 2, &amodule, &got_offset, NULL);
4698 amodule->got [got_offset] = arg;
4699 amodule->got [got_offset + 1] = addr;
4702 /* The caller expects an ftnptr */
4703 return mono_create_ftnptr (mono_domain_get (), code);
4707 * mono_aot_set_make_unreadable:
4709 * Set whenever to make all mmaped memory unreadable. In conjuction with a
4710 * SIGSEGV handler, this is useful to find out which pages the runtime tries to read.
4713 mono_aot_set_make_unreadable (gboolean unreadable)
4717 make_unreadable = unreadable;
4719 if (make_unreadable && !inited) {
4720 mono_counters_register ("AOT pagefaults", MONO_COUNTER_JIT | MONO_COUNTER_INT, &n_pagefaults);
4725 MonoAotModule *module;
4730 find_map (gpointer key, gpointer value, gpointer user_data)
4732 MonoAotModule *module = (MonoAotModule*)value;
4733 FindMapUserData *data = (FindMapUserData*)user_data;
4736 if ((data->ptr >= module->mem_begin) && (data->ptr < module->mem_end))
4737 data->module = module;
4740 static MonoAotModule*
4741 find_module_for_addr (void *ptr)
4743 FindMapUserData data;
4745 if (!make_unreadable)
4749 data.ptr = (guint8*)ptr;
4752 g_hash_table_foreach (aot_modules, (GHFunc)find_map, &data);
4759 * mono_aot_is_pagefault:
4761 * Should be called from a SIGSEGV signal handler to find out whenever @ptr is
4762 * within memory allocated by this module.
4765 mono_aot_is_pagefault (void *ptr)
4767 if (!make_unreadable)
4771 * Not signal safe, but SIGSEGV's are synchronous, and
4772 * this is only turned on by a MONO_DEBUG option.
4774 return find_module_for_addr (ptr) != NULL;
4778 * mono_aot_handle_pagefault:
4780 * Handle a pagefault caused by an unreadable page by making it readable again.
4783 mono_aot_handle_pagefault (void *ptr)
4785 #ifndef PLATFORM_WIN32
4786 guint8* start = (guint8*)ROUND_DOWN (((gssize)ptr), mono_pagesize ());
4790 res = mono_mprotect (start, mono_pagesize (), MONO_MMAP_READ|MONO_MMAP_WRITE|MONO_MMAP_EXEC);
4791 g_assert (res == 0);
4802 mono_aot_init (void)
4807 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
4813 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
4819 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
4825 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
4831 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
4837 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
4843 mono_aot_get_plt_entry (guint8 *code)
4849 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
4855 mono_aot_patch_plt_entry (guint8 *code, gpointer *got, mgreg_t *regs, guint8 *addr)
4860 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
4866 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
4868 g_assert_not_reached ();
4874 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
4876 g_assert_not_reached ();
4881 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
4883 g_assert_not_reached ();
4888 mono_aot_get_trampoline (const char *name)
4890 g_assert_not_reached ();
4895 mono_aot_get_unbox_trampoline (MonoMethod *method)
4897 g_assert_not_reached ();
4902 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
4904 g_assert_not_reached ();
4909 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
4911 g_assert_not_reached ();
4916 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
4918 g_assert_not_reached ();
4923 mono_aot_register_jit_icall (const char *name, gpointer addr)