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/abi-details.h>
41 #include <mono/metadata/tabledefs.h>
42 #include <mono/metadata/class.h>
43 #include <mono/metadata/object.h>
44 #include <mono/metadata/tokentype.h>
45 #include <mono/metadata/appdomain.h>
46 #include <mono/metadata/debug-helpers.h>
47 #include <mono/metadata/assembly.h>
48 #include <mono/metadata/metadata-internals.h>
49 #include <mono/metadata/marshal.h>
50 #include <mono/metadata/gc-internal.h>
51 #include <mono/metadata/monitor.h>
52 #include <mono/metadata/threads-types.h>
53 #include <mono/metadata/mono-endian.h>
54 #include <mono/utils/mono-logger-internal.h>
55 #include <mono/utils/mono-mmap.h>
56 #include "mono/utils/mono-compiler.h"
57 #include <mono/utils/mono-counters.h>
65 #define SHARED_EXT ".dll"
66 #elif ((defined(__ppc__) || defined(__powerpc__) || defined(__ppc64__)) || defined(__MACH__)) && !defined(__linux__)
67 #define SHARED_EXT ".dylib"
68 #elif defined(__APPLE__) && defined(TARGET_X86) && !defined(__native_client_codegen__)
69 #define SHARED_EXT ".dylib"
71 #define SHARED_EXT ".so"
74 #define ALIGN_TO(val,align) ((((guint64)val) + ((align) - 1)) & ~((align) - 1))
75 #define ALIGN_PTR_TO(ptr,align) (gpointer)((((gssize)(ptr)) + (align - 1)) & (~(align - 1)))
76 #define ROUND_DOWN(VALUE,SIZE) ((VALUE) & ~((SIZE) - 1))
83 typedef struct MonoAotModule {
85 /* Pointer to the Global Offset Table */
87 GHashTable *name_cache;
88 GHashTable *extra_methods;
89 /* Maps methods to their code */
90 GHashTable *method_to_code;
91 /* Maps pointers into the method info to the methods themselves */
92 GHashTable *method_ref_to_method;
93 MonoAssemblyName *image_names;
95 MonoAssembly *assembly;
96 MonoImage **image_table;
97 guint32 image_table_len;
107 gint32 *code_offsets;
108 gpointer *method_addresses;
109 /* This contains <offset, index> pairs sorted by offset */
110 /* This is needed because LLVM emitted methods can be in any order */
111 gint32 *sorted_code_offsets;
112 gint32 sorted_code_offsets_len;
113 guint32 *method_info_offsets;
114 guint32 *got_info_offsets;
115 guint32 *ex_info_offsets;
116 guint32 *class_info_offsets;
117 guint32 *methods_loaded;
118 guint16 *class_name_table;
119 guint32 *extra_method_table;
120 guint32 *extra_method_info_offsets;
121 guint32 *unbox_trampolines;
122 guint32 *unbox_trampolines_end;
126 /* Points to the mono EH data created by LLVM */
127 guint8 *mono_eh_frame;
129 /* Points to the trampolines */
130 guint8 *trampolines [MONO_AOT_TRAMP_NUM];
131 /* The first unused trampoline of each kind */
132 guint32 trampoline_index [MONO_AOT_TRAMP_NUM];
134 gboolean use_page_trampolines;
136 MonoAotFileInfo info;
141 JitInfoMap *async_jit_info_table;
147 unsigned char *trampolines;
148 unsigned char *trampolines_end;
151 static GHashTable *aot_modules;
152 #define mono_aot_lock() mono_mutex_lock (&aot_mutex)
153 #define mono_aot_unlock() mono_mutex_unlock (&aot_mutex)
154 static mono_mutex_t 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() mono_mutex_lock (&aot_page_mutex)
203 #define mono_aot_page_unlock() mono_mutex_unlock (&aot_page_mutex)
204 static mono_mutex_t aot_page_mutex;
207 init_plt (MonoAotModule *info);
209 /*****************************************************/
211 /*****************************************************/
214 amodule_lock (MonoAotModule *amodule)
216 mono_mutex_lock (&amodule->mutex);
220 amodule_unlock (MonoAotModule *amodule)
222 mono_mutex_unlock (&amodule->mutex);
228 * Load one of the images referenced by AMODULE. Returns NULL if the image is not
229 * found, and sets the loader error if SET_ERROR is TRUE.
232 load_image (MonoAotModule *amodule, int index, gboolean set_error)
234 MonoAssembly *assembly;
235 MonoImageOpenStatus status;
237 g_assert (index < amodule->image_table_len);
239 if (amodule->image_table [index])
240 return amodule->image_table [index];
241 if (amodule->out_of_date)
244 assembly = mono_assembly_load (&amodule->image_names [index], amodule->assembly->basedir, &status);
246 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);
247 amodule->out_of_date = TRUE;
250 char *full_name = mono_stringify_assembly_name (&amodule->image_names [index]);
251 mono_loader_set_error_assembly_load (full_name, FALSE);
257 if (strcmp (assembly->image->guid, amodule->image_guids [index])) {
258 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);
259 amodule->out_of_date = TRUE;
263 amodule->image_table [index] = assembly->image;
264 return assembly->image;
268 decode_value (guint8 *ptr, guint8 **rptr)
273 if ((b & 0x80) == 0){
276 } else if ((b & 0x40) == 0){
277 len = ((b & 0x3f) << 8 | ptr [1]);
279 } else if (b != 0xff) {
280 len = ((b & 0x1f) << 24) |
287 len = (ptr [1] << 24) | (ptr [2] << 16) | (ptr [3] << 8) | ptr [4];
293 //printf ("DECODE: %d.\n", len);
298 * mono_aot_get_offset:
300 * Decode an offset table emitted by emit_offset_table (), returning the INDEXth
304 mono_aot_get_offset (guint32 *table, int index)
306 int i, group, ngroups, index_entry_size;
307 int start_offset, offset, noffsets, group_size;
308 guint8 *data_start, *p;
309 guint32 *index32 = NULL;
310 guint16 *index16 = NULL;
312 noffsets = table [0];
313 group_size = table [1];
315 index_entry_size = table [3];
316 group = index / group_size;
318 if (index_entry_size == 2) {
319 index16 = (guint16*)&table [4];
320 data_start = (guint8*)&index16 [ngroups];
321 p = data_start + index16 [group];
323 index32 = (guint32*)&table [4];
324 data_start = (guint8*)&index32 [ngroups];
325 p = data_start + index32 [group];
328 /* offset will contain the value of offsets [group * group_size] */
329 offset = start_offset = decode_value (p, &p);
330 for (i = group * group_size + 1; i <= index; ++i) {
331 offset += decode_value (p, &p);
334 //printf ("Offset lookup: %d -> %d, start=%d, p=%d\n", index, offset, start_offset, table [3 + group]);
340 decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf);
343 decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf);
346 decode_type (MonoAotModule *module, guint8 *buf, guint8 **endbuf);
348 static MonoGenericInst*
349 decode_generic_inst (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
352 MonoType **type_argv;
353 MonoGenericInst *inst;
356 type_argc = decode_value (p, &p);
357 type_argv = g_new0 (MonoType*, type_argc);
359 for (i = 0; i < type_argc; ++i) {
360 MonoClass *pclass = decode_klass_ref (module, p, &p);
365 type_argv [i] = &pclass->byval_arg;
368 inst = mono_metadata_get_generic_inst (type_argc, type_argv);
377 decode_generic_context (MonoAotModule *module, MonoGenericContext *ctx, guint8 *buf, guint8 **endbuf)
384 argc = decode_value (p, &p);
387 ctx->class_inst = decode_generic_inst (module, p, &p);
388 if (!ctx->class_inst)
392 argc = decode_value (p, &p);
395 ctx->method_inst = decode_generic_inst (module, p, &p);
396 if (!ctx->method_inst)
405 decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
408 MonoClass *klass = NULL, *eklass;
409 guint32 token, rank, idx;
413 reftype = decode_value (p, &p);
420 case MONO_AOT_TYPEREF_TYPEDEF_INDEX:
421 idx = decode_value (p, &p);
422 image = load_image (module, 0, TRUE);
425 klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF + idx);
427 case MONO_AOT_TYPEREF_TYPEDEF_INDEX_IMAGE:
428 idx = decode_value (p, &p);
429 image = load_image (module, decode_value (p, &p), TRUE);
432 klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF + idx);
434 case MONO_AOT_TYPEREF_TYPESPEC_TOKEN:
435 token = decode_value (p, &p);
436 image = module->assembly->image;
439 klass = mono_class_get (image, token);
441 case MONO_AOT_TYPEREF_GINST: {
443 MonoGenericContext ctx;
446 gclass = decode_klass_ref (module, p, &p);
449 g_assert (gclass->generic_container);
451 memset (&ctx, 0, sizeof (ctx));
452 ctx.class_inst = decode_generic_inst (module, p, &p);
455 type = mono_class_inflate_generic_type (&gclass->byval_arg, &ctx);
456 klass = mono_class_from_mono_type (type);
457 mono_metadata_free_type (type);
460 case MONO_AOT_TYPEREF_VAR: {
462 MonoGenericContainer *container = NULL;
463 int type = decode_value (p, &p);
464 int num = decode_value (p, &p);
465 gboolean has_container = decode_value (p, &p);
469 gboolean is_method = decode_value (p, &p);
472 MonoMethod *method_def;
473 g_assert (type == MONO_TYPE_MVAR);
474 method_def = decode_resolve_method_ref (module, p, &p);
478 container = mono_method_get_generic_container (method_def);
480 MonoClass *class_def;
481 g_assert (type == MONO_TYPE_VAR);
482 class_def = decode_klass_ref (module, p, &p);
486 container = class_def->generic_container;
489 serial = decode_value (p, &p);
492 // FIXME: Memory management
493 t = g_new0 (MonoType, 1);
496 t->data.generic_param = mono_generic_container_get_param (container, num);
497 g_assert (serial == 0);
500 MonoGenericParam *par = (MonoGenericParam*)g_new0 (MonoGenericParamFull, 1);
502 par->serial = serial;
504 par->image = mono_defaults.corlib;
505 t->data.generic_param = par;
508 // FIXME: Maybe use types directly to avoid
509 // the overhead of creating MonoClass-es
510 klass = mono_class_from_mono_type (t);
515 case MONO_AOT_TYPEREF_ARRAY:
517 rank = decode_value (p, &p);
518 eklass = decode_klass_ref (module, p, &p);
519 klass = mono_array_class_get (eklass, rank);
521 case MONO_AOT_TYPEREF_PTR: {
524 t = decode_type (module, p, &p);
527 klass = mono_class_from_mono_type (t);
531 case MONO_AOT_TYPEREF_BLOB_INDEX: {
532 guint32 offset = decode_value (p, &p);
535 p2 = module->blob + offset;
536 klass = decode_klass_ref (module, p2, &p2);
540 g_assert_not_reached ();
543 //printf ("BLA: %s\n", mono_type_full_name (&klass->byval_arg));
548 static MonoClassField*
549 decode_field_info (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
551 MonoClass *klass = decode_klass_ref (module, buf, &buf);
558 token = MONO_TOKEN_FIELD_DEF + decode_value (p, &p);
562 return mono_class_get_field (klass, token);
566 * Parse a MonoType encoded by encode_type () in aot-compiler.c. Return malloc-ed
570 decode_type (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
575 t = g_malloc0 (sizeof (MonoType));
578 if (*p == MONO_TYPE_PINNED) {
581 } else if (*p == MONO_TYPE_BYREF) {
594 case MONO_TYPE_BOOLEAN:
608 case MONO_TYPE_STRING:
609 case MONO_TYPE_OBJECT:
610 case MONO_TYPE_TYPEDBYREF:
612 case MONO_TYPE_VALUETYPE:
613 case MONO_TYPE_CLASS:
614 t->data.klass = decode_klass_ref (module, p, &p);
616 case MONO_TYPE_SZARRAY:
617 t->data.klass = decode_klass_ref (module, p, &p);
623 t->data.type = decode_type (module, p, &p);
625 case MONO_TYPE_GENERICINST: {
627 MonoGenericContext ctx;
631 gclass = decode_klass_ref (module, p, &p);
634 g_assert (gclass->generic_container);
636 memset (&ctx, 0, sizeof (ctx));
637 ctx.class_inst = decode_generic_inst (module, p, &p);
640 type = mono_class_inflate_generic_type (&gclass->byval_arg, &ctx);
641 klass = mono_class_from_mono_type (type);
642 t->data.generic_class = klass->generic_class;
645 case MONO_TYPE_ARRAY: {
646 MonoArrayType *array;
649 // FIXME: memory management
650 array = g_new0 (MonoArrayType, 1);
651 array->eklass = decode_klass_ref (module, p, &p);
654 array->rank = decode_value (p, &p);
655 array->numsizes = decode_value (p, &p);
658 array->sizes = g_malloc0 (sizeof (int) * array->numsizes);
659 for (i = 0; i < array->numsizes; ++i)
660 array->sizes [i] = decode_value (p, &p);
662 array->numlobounds = decode_value (p, &p);
663 if (array->numlobounds)
664 array->lobounds = g_malloc0 (sizeof (int) * array->numlobounds);
665 for (i = 0; i < array->numlobounds; ++i)
666 array->lobounds [i] = decode_value (p, &p);
667 t->data.array = array;
671 case MONO_TYPE_MVAR: {
672 MonoClass *klass = decode_klass_ref (module, p, &p);
675 t->data.generic_param = klass->byval_arg.data.generic_param;
679 g_assert_not_reached ();
687 // FIXME: Error handling, memory management
689 static MonoMethodSignature*
690 decode_signature_with_target (MonoAotModule *module, MonoMethodSignature *target, guint8 *buf, guint8 **endbuf)
692 MonoMethodSignature *sig;
694 int i, param_count, call_conv, gen_param_count = 0;
696 gboolean hasthis, explicit_this, has_gen_params;
700 has_gen_params = (flags & 0x10) != 0;
701 hasthis = (flags & 0x20) != 0;
702 explicit_this = (flags & 0x40) != 0;
703 call_conv = flags & 0x0F;
706 gen_param_count = decode_value (p, &p);
707 param_count = decode_value (p, &p);
708 if (target && param_count != target->param_count)
710 sig = g_malloc0 (MONO_SIZEOF_METHOD_SIGNATURE + param_count * sizeof (MonoType *));
711 sig->param_count = param_count;
712 sig->sentinelpos = -1;
713 sig->hasthis = hasthis;
714 sig->explicit_this = explicit_this;
715 sig->call_convention = call_conv;
716 sig->param_count = param_count;
717 sig->ret = decode_type (module, p, &p);
718 for (i = 0; i < param_count; ++i) {
719 if (*p == MONO_TYPE_SENTINEL) {
720 g_assert (sig->call_convention == MONO_CALL_VARARG);
721 sig->sentinelpos = i;
724 sig->params [i] = decode_type (module, p, &p);
727 if (sig->call_convention == MONO_CALL_VARARG && sig->sentinelpos == -1)
728 sig->sentinelpos = sig->param_count;
735 static MonoMethodSignature*
736 decode_signature (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
738 return decode_signature_with_target (module, NULL, buf, endbuf);
742 sig_matches_target (MonoAotModule *module, MonoMethod *target, guint8 *buf, guint8 **endbuf)
744 MonoMethodSignature *sig;
748 sig = decode_signature_with_target (module, mono_method_signature (target), p, &p);
749 res = sig && mono_metadata_signature_equal (mono_method_signature (target), sig);
755 /* Stores information returned by decode_method_ref () */
760 gboolean no_aot_trampoline;
764 * decode_method_ref_with_target:
766 * Decode a method reference, storing the image/token into a MethodRef structure.
767 * This avoids loading metadata for the method if the caller does not need it. If the method has
768 * no token, then it is loaded from metadata and ref->method is set to the method instance.
769 * If TARGET is non-NULL, abort decoding if it can be determined that the decoded method
770 * couldn't resolve to TARGET, and return FALSE.
771 * There are some kinds of method references which only support a non-null TARGET.
772 * This means that its not possible to decode this into a method, only to check
773 * that the method reference matches a given method. This is normally not a problem
774 * as these wrappers only occur in the extra_methods table, where we already have
775 * a method we want to lookup.
778 decode_method_ref_with_target (MonoAotModule *module, MethodRef *ref, MonoMethod *target, guint8 *buf, guint8 **endbuf)
780 guint32 image_index, value;
781 MonoImage *image = NULL;
784 memset (ref, 0, sizeof (MethodRef));
786 value = decode_value (p, &p);
787 image_index = value >> 24;
789 if (image_index == MONO_AOT_METHODREF_NO_AOT_TRAMPOLINE) {
790 ref->no_aot_trampoline = TRUE;
791 value = decode_value (p, &p);
792 image_index = value >> 24;
795 if (image_index < MONO_AOT_METHODREF_MIN || image_index == MONO_AOT_METHODREF_METHODSPEC || image_index == MONO_AOT_METHODREF_GINST) {
796 if (target && target->wrapper_type)
800 if (image_index == MONO_AOT_METHODREF_WRAPPER) {
801 guint32 wrapper_type;
803 wrapper_type = decode_value (p, &p);
805 if (target && target->wrapper_type != wrapper_type)
809 image = mono_defaults.corlib;
811 switch (wrapper_type) {
812 #ifndef DISABLE_REMOTING
813 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK: {
814 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
818 mono_class_init (m->klass);
819 ref->method = mono_marshal_get_remoting_invoke_with_check (m);
822 case MONO_WRAPPER_PROXY_ISINST: {
823 MonoClass *klass = decode_klass_ref (module, p, &p);
826 ref->method = mono_marshal_get_proxy_cancast (klass);
829 case MONO_WRAPPER_LDFLD:
830 case MONO_WRAPPER_LDFLDA:
831 case MONO_WRAPPER_STFLD:
832 case MONO_WRAPPER_ISINST: {
833 MonoClass *klass = decode_klass_ref (module, p, &p);
836 if (wrapper_type == MONO_WRAPPER_LDFLD)
837 ref->method = mono_marshal_get_ldfld_wrapper (&klass->byval_arg);
838 else if (wrapper_type == MONO_WRAPPER_LDFLDA)
839 ref->method = mono_marshal_get_ldflda_wrapper (&klass->byval_arg);
840 else if (wrapper_type == MONO_WRAPPER_STFLD)
841 ref->method = mono_marshal_get_stfld_wrapper (&klass->byval_arg);
842 else if (wrapper_type == MONO_WRAPPER_ISINST)
843 ref->method = mono_marshal_get_isinst (klass);
845 g_assert_not_reached ();
848 case MONO_WRAPPER_LDFLD_REMOTE:
849 ref->method = mono_marshal_get_ldfld_remote_wrapper (NULL);
851 case MONO_WRAPPER_STFLD_REMOTE:
852 ref->method = mono_marshal_get_stfld_remote_wrapper (NULL);
855 case MONO_WRAPPER_ALLOC: {
856 int atype = decode_value (p, &p);
858 ref->method = mono_gc_get_managed_allocator_by_type (atype);
859 g_assert (ref->method);
862 case MONO_WRAPPER_WRITE_BARRIER:
863 ref->method = mono_gc_get_write_barrier ();
865 case MONO_WRAPPER_STELEMREF: {
866 int subtype = decode_value (p, &p);
868 if (subtype == WRAPPER_SUBTYPE_NONE) {
869 ref->method = mono_marshal_get_stelemref ();
870 } else if (subtype == WRAPPER_SUBTYPE_VIRTUAL_STELEMREF) {
874 kind = decode_value (p, &p);
876 /* Can't decode this */
879 if (target->wrapper_type == MONO_WRAPPER_STELEMREF) {
880 info = mono_marshal_get_wrapper_info (target);
883 if (info->subtype == subtype && info->d.virtual_stelemref.kind == kind)
884 ref->method = target;
891 g_assert_not_reached ();
895 case MONO_WRAPPER_SYNCHRONIZED: {
896 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
900 ref->method = mono_marshal_get_synchronized_wrapper (m);
903 case MONO_WRAPPER_UNKNOWN: {
904 MonoMethodDesc *desc;
905 MonoMethod *orig_method;
906 int subtype = decode_value (p, &p);
908 if (subtype == WRAPPER_SUBTYPE_PTR_TO_STRUCTURE || subtype == WRAPPER_SUBTYPE_STRUCTURE_TO_PTR) {
909 MonoClass *klass = decode_klass_ref (module, p, &p);
916 if (klass != target->klass)
919 if (subtype == WRAPPER_SUBTYPE_PTR_TO_STRUCTURE) {
920 if (strcmp (target->name, "PtrToStructure"))
922 ref->method = mono_marshal_get_ptr_to_struct (klass);
924 if (strcmp (target->name, "StructureToPtr"))
926 ref->method = mono_marshal_get_struct_to_ptr (klass);
928 } else if (subtype == WRAPPER_SUBTYPE_SYNCHRONIZED_INNER) {
929 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
933 ref->method = mono_marshal_get_synchronized_inner_wrapper (m);
934 } else if (subtype == WRAPPER_SUBTYPE_ARRAY_ACCESSOR) {
935 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
939 ref->method = mono_marshal_get_array_accessor_wrapper (m);
940 } else if (subtype == WRAPPER_SUBTYPE_GSHAREDVT_IN) {
941 ref->method = mono_marshal_get_gsharedvt_in_wrapper ();
942 } else if (subtype == WRAPPER_SUBTYPE_GSHAREDVT_OUT) {
943 ref->method = mono_marshal_get_gsharedvt_out_wrapper ();
945 if (subtype == WRAPPER_SUBTYPE_FAST_MONITOR_ENTER)
946 desc = mono_method_desc_new ("Monitor:Enter", FALSE);
947 else if (subtype == WRAPPER_SUBTYPE_FAST_MONITOR_EXIT)
948 desc = mono_method_desc_new ("Monitor:Exit", FALSE);
949 else if (subtype == WRAPPER_SUBTYPE_FAST_MONITOR_ENTER_V4)
950 desc = mono_method_desc_new ("Monitor:Enter(object,bool&)", FALSE);
952 g_assert_not_reached ();
953 orig_method = mono_method_desc_search_in_class (desc, mono_defaults.monitor_class);
954 g_assert (orig_method);
955 mono_method_desc_free (desc);
956 ref->method = mono_monitor_get_fast_path (orig_method);
960 case MONO_WRAPPER_MANAGED_TO_MANAGED: {
961 int subtype = decode_value (p, &p);
963 if (subtype == WRAPPER_SUBTYPE_ELEMENT_ADDR) {
964 int rank = decode_value (p, &p);
965 int elem_size = decode_value (p, &p);
967 ref->method = mono_marshal_get_array_address (rank, elem_size);
968 } else if (subtype == WRAPPER_SUBTYPE_STRING_CTOR) {
972 m = decode_resolve_method_ref (module, p, &p);
978 g_assert (target->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED);
980 info = mono_marshal_get_wrapper_info (target);
981 if (info && info->subtype == subtype && info->d.string_ctor.method == m)
982 ref->method = target;
988 case MONO_WRAPPER_MANAGED_TO_NATIVE: {
990 int subtype = decode_value (p, &p);
993 if (subtype == WRAPPER_SUBTYPE_ICALL_WRAPPER) {
998 if (strcmp (target->name, name) != 0)
1000 ref->method = target;
1002 m = decode_resolve_method_ref (module, p, &p);
1007 /* This should only happen when looking for an extra method */
1010 if (mono_marshal_method_from_wrapper (target) == m)
1011 ref->method = target;
1017 case MONO_WRAPPER_CASTCLASS: {
1018 int subtype = decode_value (p, &p);
1020 if (subtype == WRAPPER_SUBTYPE_CASTCLASS_WITH_CACHE)
1021 ref->method = mono_marshal_get_castclass_with_cache ();
1022 else if (subtype == WRAPPER_SUBTYPE_ISINST_WITH_CACHE)
1023 ref->method = mono_marshal_get_isinst_with_cache ();
1025 g_assert_not_reached ();
1028 case MONO_WRAPPER_RUNTIME_INVOKE: {
1029 int subtype = decode_value (p, &p);
1034 if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_DYNAMIC) {
1035 if (strcmp (target->name, "runtime_invoke_dynamic") != 0)
1037 ref->method = target;
1038 } else if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_DIRECT) {
1039 /* Direct wrapper */
1040 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
1044 ref->method = mono_marshal_get_runtime_invoke (m, FALSE);
1045 } else if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_VIRTUAL) {
1046 /* Virtual direct wrapper */
1047 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
1051 ref->method = mono_marshal_get_runtime_invoke (m, TRUE);
1053 MonoMethodSignature *sig;
1056 sig = decode_signature_with_target (module, NULL, p, &p);
1057 info = mono_marshal_get_wrapper_info (target);
1060 if (info->subtype != subtype)
1062 g_assert (info->d.runtime_invoke.sig);
1063 if (mono_metadata_signature_equal (sig, info->d.runtime_invoke.sig))
1064 ref->method = target;
1070 case MONO_WRAPPER_DELEGATE_INVOKE:
1071 case MONO_WRAPPER_DELEGATE_BEGIN_INVOKE:
1072 case MONO_WRAPPER_DELEGATE_END_INVOKE: {
1073 gboolean is_inflated = decode_value (p, &p);
1074 WrapperSubtype subtype;
1078 MonoMethod *invoke, *wrapper;
1080 klass = decode_klass_ref (module, p, &p);
1084 switch (wrapper_type) {
1085 case MONO_WRAPPER_DELEGATE_INVOKE:
1086 invoke = mono_get_delegate_invoke (klass);
1087 wrapper = mono_marshal_get_delegate_invoke (invoke, NULL);
1089 case MONO_WRAPPER_DELEGATE_BEGIN_INVOKE:
1090 invoke = mono_get_delegate_begin_invoke (klass);
1091 wrapper = mono_marshal_get_delegate_begin_invoke (invoke);
1093 case MONO_WRAPPER_DELEGATE_END_INVOKE:
1094 invoke = mono_get_delegate_end_invoke (klass);
1095 wrapper = mono_marshal_get_delegate_end_invoke (invoke);
1098 g_assert_not_reached ();
1101 if (target && wrapper != target)
1103 ref->method = wrapper;
1106 * These wrappers are associated with a signature, not with a method.
1107 * Since we can't decode them into methods, they need a target method.
1112 if (wrapper_type == MONO_WRAPPER_DELEGATE_INVOKE) {
1115 subtype = decode_value (p, &p);
1116 info = mono_marshal_get_wrapper_info (target);
1118 if (info->subtype != subtype)
1121 if (subtype != WRAPPER_SUBTYPE_NONE)
1125 if (sig_matches_target (module, target, p, &p))
1126 ref->method = target;
1132 case MONO_WRAPPER_NATIVE_TO_MANAGED: {
1136 m = decode_resolve_method_ref (module, p, &p);
1139 klass = decode_klass_ref (module, p, &p);
1142 ref->method = mono_marshal_get_managed_wrapper (m, klass, 0);
1146 g_assert_not_reached ();
1148 } else if (image_index == MONO_AOT_METHODREF_METHODSPEC) {
1149 image_index = decode_value (p, &p);
1150 ref->token = decode_value (p, &p);
1152 image = load_image (module, image_index, TRUE);
1155 } else if (image_index == MONO_AOT_METHODREF_GINST) {
1157 MonoGenericContext ctx;
1160 * These methods do not have a token which resolves them, so we
1161 * resolve them immediately.
1163 klass = decode_klass_ref (module, p, &p);
1167 if (target && target->klass != klass)
1170 image_index = decode_value (p, &p);
1171 ref->token = decode_value (p, &p);
1173 image = load_image (module, image_index, TRUE);
1177 ref->method = mono_get_method_full (image, ref->token, NULL, NULL);
1181 memset (&ctx, 0, sizeof (ctx));
1183 if (FALSE && klass->generic_class) {
1184 ctx.class_inst = klass->generic_class->context.class_inst;
1185 ctx.method_inst = NULL;
1187 ref->method = mono_class_inflate_generic_method_full (ref->method, klass, &ctx);
1190 memset (&ctx, 0, sizeof (ctx));
1192 if (!decode_generic_context (module, &ctx, p, &p))
1195 ref->method = mono_class_inflate_generic_method_full (ref->method, klass, &ctx);
1196 } else if (image_index == MONO_AOT_METHODREF_ARRAY) {
1200 klass = decode_klass_ref (module, p, &p);
1203 method_type = decode_value (p, &p);
1204 switch (method_type) {
1206 ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank);
1209 ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank * 2);
1212 ref->method = mono_class_get_method_from_name (klass, "Get", -1);
1215 ref->method = mono_class_get_method_from_name (klass, "Address", -1);
1218 ref->method = mono_class_get_method_from_name (klass, "Set", -1);
1221 g_assert_not_reached ();
1224 if (image_index == MONO_AOT_METHODREF_LARGE_IMAGE_INDEX) {
1225 image_index = decode_value (p, &p);
1226 value = decode_value (p, &p);
1229 ref->token = MONO_TOKEN_METHOD_DEF | (value & 0xffffff);
1231 image = load_image (module, image_index, TRUE);
1244 decode_method_ref (MonoAotModule *module, MethodRef *ref, guint8 *buf, guint8 **endbuf)
1246 return decode_method_ref_with_target (module, ref, NULL, buf, endbuf);
1250 * decode_resolve_method_ref_with_target:
1252 * Similar to decode_method_ref, but resolve and return the method itself.
1255 decode_resolve_method_ref_with_target (MonoAotModule *module, MonoMethod *target, guint8 *buf, guint8 **endbuf)
1260 res = decode_method_ref_with_target (module, &ref, target, buf, endbuf);
1267 return mono_get_method (ref.image, ref.token, NULL);
1271 decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
1273 return decode_resolve_method_ref_with_target (module, NULL, buf, endbuf);
1277 create_cache_structure (void)
1283 home = g_get_home_dir ();
1287 tmp = g_build_filename (home, ".mono", NULL);
1288 if (!g_file_test (tmp, G_FILE_TEST_IS_DIR)) {
1289 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT creating directory %s", tmp);
1293 err = mkdir (tmp, 0777);
1296 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed: %s", g_strerror (errno));
1302 tmp = g_build_filename (home, ".mono", "aot-cache", NULL);
1303 if (!g_file_test (tmp, G_FILE_TEST_IS_DIR)) {
1304 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT creating directory %s", tmp);
1308 err = mkdir (tmp, 0777);
1311 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed: %s", g_strerror (errno));
1320 * load_aot_module_from_cache:
1322 * Experimental code to AOT compile loaded assemblies on demand.
1325 * - Add environment variable MONO_AOT_CACHE_OPTIONS
1326 * - Add options for controlling the cache size
1327 * - Handle full cache by deleting old assemblies lru style
1328 * - Add options for excluding assemblies during development
1329 * - Maybe add a threshold after an assembly is AOT compiled
1330 * - invoking a new mono process is a security risk
1331 * - recompile the AOT module if one of its dependencies changes
1334 load_aot_module_from_cache (MonoAssembly *assembly, char **aot_name)
1336 char *fname, *cmd, *tmp2, *aot_options;
1345 if (image_is_dynamic (assembly->image))
1348 create_cache_structure ();
1350 home = g_get_home_dir ();
1352 tmp2 = g_strdup_printf ("%s-%s%s", assembly->image->assembly_name, assembly->image->guid, SHARED_EXT);
1353 fname = g_build_filename (home, ".mono", "aot-cache", tmp2, NULL);
1357 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT trying to load from cache: '%s'.", fname);
1358 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
1361 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT not found.");
1363 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT precompiling assembly '%s'... ", assembly->image->name);
1365 aot_options = g_strdup_printf ("outfile=%s", fname);
1367 if (spawn_compiler) {
1368 /* FIXME: security */
1369 /* FIXME: Has to pass the assembly loading path to the child process */
1370 cmd = g_strdup_printf ("mono -O=all --aot=%s %s", aot_options, assembly->image->name);
1372 res = g_spawn_command_line_sync (cmd, &out, &err, &exit_status, NULL);
1374 #if !defined(HOST_WIN32) && !defined(__ppc__) && !defined(__ppc64__) && !defined(__powerpc__)
1376 if (!WIFEXITED (exit_status) && (WEXITSTATUS (exit_status) == 0))
1377 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT failed: %s.", err);
1379 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT succeeded.");
1386 res = mono_compile_assembly (assembly, mono_parse_default_optimizations (NULL), aot_options);
1388 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT failed.");
1390 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT succeeded.");
1394 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
1396 g_free (aot_options);
1403 find_symbol (MonoDl *module, gpointer *globals, const char *name, gpointer *value)
1407 guint16 *table, *entry;
1410 char *symbol = (char*)name;
1413 symbol = g_strdup_printf ("_%s", name);
1416 /* The first entry points to the hash */
1417 table = globals [0];
1420 table_size = table [0];
1423 hash = mono_metadata_str_hash (symbol) % table_size;
1425 entry = &table [hash * 2];
1427 /* Search the hash for the index into the globals table */
1429 while (entry [0] != 0) {
1430 guint32 index = entry [0] - 1;
1431 guint32 next = entry [1];
1433 //printf ("X: %s %s\n", (char*)globals [index * 2], name);
1435 if (!strcmp (globals [index * 2], symbol)) {
1436 global_index = index;
1441 entry = &table [next * 2];
1447 if (global_index != -1)
1448 *value = globals [global_index * 2 + 1];
1455 char *err = mono_dl_symbol (module, name, value);
1463 check_usable (MonoAssembly *assembly, MonoAotFileInfo *info, char **out_msg)
1467 gboolean usable = TRUE;
1470 guint32 excluded_cpu_optimizations;
1472 if (strcmp (assembly->image->guid, info->assembly_guid)) {
1473 msg = g_strdup_printf ("doesn't match assembly");
1477 build_info = mono_get_runtime_build_info ();
1478 if (strlen (info->runtime_version) > 0 && strcmp (info->runtime_version, build_info)) {
1479 msg = g_strdup_printf ("compiled against runtime version '%s' while this runtime has version '%s'", info->runtime_version, build_info);
1482 g_free (build_info);
1484 full_aot = info->flags & MONO_AOT_FILE_FLAG_FULL_AOT;
1486 if (mono_aot_only && !full_aot) {
1487 msg = g_strdup_printf ("not compiled with --aot=full");
1490 if (!mono_aot_only && full_aot) {
1491 msg = g_strdup_printf ("compiled with --aot=full");
1495 /* mono_arch_find_imt_method () requires this */
1496 if ((info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM) && !mono_use_llvm) {
1497 msg = g_strdup_printf ("compiled against LLVM");
1500 if (!(info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM) && mono_use_llvm) {
1501 msg = g_strdup_printf ("not compiled against LLVM");
1505 if (mini_get_debug_options ()->mdb_optimizations && !(info->flags & MONO_AOT_FILE_FLAG_DEBUG) && !full_aot) {
1506 msg = g_strdup_printf ("not compiled for debugging");
1510 mono_arch_cpu_optimizations (&excluded_cpu_optimizations);
1511 if (info->opts & excluded_cpu_optimizations) {
1512 msg = g_strdup_printf ("compiled with unsupported CPU optimizations");
1516 if (!mono_aot_only && (info->simd_opts & ~mono_arch_cpu_enumerate_simd_versions ())) {
1517 msg = g_strdup_printf ("compiled with unsupported SIMD extensions");
1523 if (info->gc_name_index != -1) {
1524 char *gc_name = (char*)&blob [info->gc_name_index];
1525 const char *current_gc_name = mono_gc_get_gc_name ();
1527 if (strcmp (current_gc_name, gc_name) != 0) {
1528 msg = g_strdup_printf ("compiled against GC %s, while the current runtime uses GC %s.\n", gc_name, current_gc_name);
1537 /* This returns an interop address */
1539 get_arm_bl_target (guint32 *ins_addr)
1542 guint32 ins = *ins_addr;
1545 if ((ins >> ARMCOND_SHIFT) == ARMCOND_NV) {
1547 offset = (((int)(((ins & 0xffffff) << 1) | ((ins >> 24) & 0x1))) << 7) >> 7;
1548 return (char*)ins_addr + (offset * 2) + 8 + 1;
1550 offset = (((int)ins & 0xffffff) << 8) >> 8;
1551 return (char*)ins_addr + (offset * 4) + 8;
1553 #elif defined(TARGET_ARM64)
1554 return mono_arch_get_call_target (((guint8*)ins_addr) + 4);
1556 g_assert_not_reached ();
1562 load_aot_module (MonoAssembly *assembly, gpointer user_data)
1565 MonoAotModule *amodule;
1567 gboolean usable = TRUE;
1568 char *version_symbol = NULL;
1570 gpointer *globals = NULL;
1571 MonoAotFileInfo *info = NULL;
1574 gboolean do_load_image = TRUE;
1575 int align_double, align_int64;
1577 if (mono_compile_aot)
1580 if (assembly->image->aot_module)
1582 * Already loaded. This can happen because the assembly loading code might invoke
1583 * the assembly load hooks multiple times for the same assembly.
1587 if (image_is_dynamic (assembly->image) || assembly->ref_only)
1590 if (mono_security_cas_enabled ())
1594 if (static_aot_modules)
1595 info = g_hash_table_lookup (static_aot_modules, assembly->aname.name);
1601 /* Statically linked AOT module */
1603 aot_name = g_strdup_printf ("%s", assembly->aname.name);
1604 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "Found statically linked AOT module '%s'.\n", aot_name);
1605 globals = info->globals;
1608 sofile = load_aot_module_from_cache (assembly, &aot_name);
1611 aot_name = g_strdup_printf ("%s%s", assembly->image->name, SHARED_EXT);
1613 sofile = mono_dl_open (aot_name, MONO_DL_LAZY, &err);
1616 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module '%s' not found: %s\n", aot_name, err);
1622 if (!sofile && !globals) {
1623 if (mono_aot_only && assembly->image->tables [MONO_TABLE_METHOD].rows) {
1624 fprintf (stderr, "Failed to load AOT module '%s' in aot-only mode.\n", aot_name);
1632 find_symbol (sofile, globals, "mono_aot_version", (gpointer *) &version_symbol);
1633 find_symbol (sofile, globals, "mono_aot_file_info", (gpointer*)&info);
1636 if (version_symbol) {
1637 /* Old file format */
1638 version = atoi (version_symbol);
1641 version = info->version;
1644 if (version != MONO_AOT_FILE_VERSION) {
1645 msg = g_strdup_printf ("wrong file format version (expected %d got %d)", MONO_AOT_FILE_VERSION, version);
1648 usable = check_usable (assembly, info, &msg);
1652 if (mono_aot_only) {
1653 fprintf (stderr, "Failed to load AOT module '%s' while running in aot-only mode: %s.\n", aot_name, msg);
1656 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is unusable: %s.\n", aot_name, msg);
1661 mono_dl_close (sofile);
1662 assembly->image->aot_module = NULL;
1666 #if defined (TARGET_ARM) && defined (TARGET_MACH)
1671 memset (&t, 0, sizeof (MonoType));
1672 t.type = MONO_TYPE_R8;
1673 mono_type_size (&t, &align);
1674 align_double = align;
1676 memset (&t, 0, sizeof (MonoType));
1677 t.type = MONO_TYPE_I8;
1678 align_int64 = align;
1681 align_double = MONO_ABI_ALIGNOF (double);
1682 align_int64 = MONO_ABI_ALIGNOF (gint64);
1686 g_assert (info->double_align == align_double);
1687 g_assert (info->long_align == align_int64);
1688 g_assert (info->generic_tramp_num == MONO_TRAMPOLINE_NUM);
1692 amodule = g_new0 (MonoAotModule, 1);
1693 amodule->aot_name = aot_name;
1694 amodule->assembly = assembly;
1696 memcpy (&amodule->info, info, sizeof (*info));
1698 amodule->got = amodule->info.got;
1699 amodule->got [0] = assembly->image;
1700 amodule->globals = globals;
1701 amodule->sofile = sofile;
1702 amodule->method_to_code = g_hash_table_new (mono_aligned_addr_hash, NULL);
1703 amodule->blob = blob;
1705 mono_mutex_init_recursive (&amodule->mutex);
1707 /* Read image table */
1709 guint32 table_len, i;
1712 table = info->image_table;
1715 table_len = *(guint32*)table;
1716 table += sizeof (guint32);
1717 amodule->image_table = g_new0 (MonoImage*, table_len);
1718 amodule->image_names = g_new0 (MonoAssemblyName, table_len);
1719 amodule->image_guids = g_new0 (char*, table_len);
1720 amodule->image_table_len = table_len;
1721 for (i = 0; i < table_len; ++i) {
1722 MonoAssemblyName *aname = &(amodule->image_names [i]);
1724 aname->name = g_strdup (table);
1725 table += strlen (table) + 1;
1726 amodule->image_guids [i] = g_strdup (table);
1727 table += strlen (table) + 1;
1729 aname->culture = g_strdup (table);
1730 table += strlen (table) + 1;
1731 memcpy (aname->public_key_token, table, strlen (table) + 1);
1732 table += strlen (table) + 1;
1734 table = ALIGN_PTR_TO (table, 8);
1735 aname->flags = *(guint32*)table;
1737 aname->major = *(guint32*)table;
1739 aname->minor = *(guint32*)table;
1741 aname->build = *(guint32*)table;
1743 aname->revision = *(guint32*)table;
1748 amodule->code_offsets = info->code_offsets;
1749 amodule->method_addresses = info->method_addresses;
1750 amodule->code = info->methods;
1752 /* Mask out thumb interop bit */
1753 amodule->code = (void*)((mgreg_t)amodule->code & ~1);
1755 amodule->code_end = info->methods_end;
1756 amodule->method_info_offsets = info->method_info_offsets;
1757 amodule->ex_info_offsets = info->ex_info_offsets;
1758 amodule->class_info_offsets = info->class_info_offsets;
1759 amodule->class_name_table = info->class_name_table;
1760 amodule->extra_method_table = info->extra_method_table;
1761 amodule->extra_method_info_offsets = info->extra_method_info_offsets;
1762 amodule->unbox_trampolines = info->unbox_trampolines;
1763 amodule->unbox_trampolines_end = info->unbox_trampolines_end;
1764 amodule->got_info_offsets = info->got_info_offsets;
1765 amodule->unwind_info = info->unwind_info;
1766 amodule->mem_end = info->mem_end;
1767 amodule->mem_begin = amodule->code;
1768 amodule->plt = info->plt;
1769 amodule->plt_end = info->plt_end;
1770 amodule->mono_eh_frame = info->mono_eh_frame;
1771 amodule->trampolines [MONO_AOT_TRAMP_SPECIFIC] = info->specific_trampolines;
1772 amodule->trampolines [MONO_AOT_TRAMP_STATIC_RGCTX] = info->static_rgctx_trampolines;
1773 amodule->trampolines [MONO_AOT_TRAMP_IMT_THUNK] = info->imt_thunks;
1774 amodule->trampolines [MONO_AOT_TRAMP_GSHAREDVT_ARG] = info->gsharedvt_arg_trampolines;
1775 amodule->thumb_end = info->thumb_end;
1777 if (info->flags & MONO_AOT_FILE_FLAG_DIRECT_METHOD_ADDRESSES) {
1778 /* Compute code_offsets from the method addresses */
1779 amodule->code_offsets = g_malloc0 (amodule->info.nmethods * sizeof (gint32));
1780 for (i = 0; i < amodule->info.nmethods; ++i) {
1781 /* method_addresses () contains a table of branches, since the ios linker can update those correctly */
1784 #if defined(TARGET_ARM) || defined(TARGET_ARM64)
1785 addr = get_arm_bl_target ((guint32*)amodule->method_addresses + i);
1786 #elif defined(TARGET_X86) || defined(TARGET_AMD64)
1787 addr = mono_arch_get_call_target ((guint8*)amodule->method_addresses + (i * 5) + 5);
1789 g_assert_not_reached ();
1792 if (addr == amodule->method_addresses)
1793 amodule->code_offsets [i] = 0xffffffff;
1795 amodule->code_offsets [i] = (char*)addr - (char*)amodule->code;
1799 if (make_unreadable) {
1800 #ifndef TARGET_WIN32
1802 guint8 *page_start, *page_end;
1805 addr = amodule->mem_begin;
1806 len = amodule->mem_end - amodule->mem_begin;
1808 /* Round down in both directions to avoid modifying data which is not ours */
1809 page_start = (guint8 *) (((gssize) (addr)) & ~ (mono_pagesize () - 1)) + mono_pagesize ();
1810 page_end = (guint8 *) (((gssize) (addr + len)) & ~ (mono_pagesize () - 1));
1811 if (page_end > page_start) {
1812 err = mono_mprotect (page_start, (page_end - page_start), MONO_MMAP_NONE);
1813 g_assert (err == 0);
1820 aot_code_low_addr = MIN (aot_code_low_addr, (gsize)amodule->code);
1821 aot_code_high_addr = MAX (aot_code_high_addr, (gsize)amodule->code_end);
1823 g_hash_table_insert (aot_modules, assembly, amodule);
1826 mono_jit_info_add_aot_module (assembly->image, amodule->code, amodule->code_end);
1828 assembly->image->aot_module = amodule;
1830 if (mono_aot_only) {
1832 find_symbol (amodule->sofile, amodule->globals, "specific_trampolines_page", (gpointer *)&code);
1833 amodule->use_page_trampolines = code != NULL;
1834 /*g_warning ("using page trampolines: %d", amodule->use_page_trampolines);*/
1835 if (mono_defaults.corlib) {
1836 /* The second got slot contains the mscorlib got addr */
1837 MonoAotModule *mscorlib_amodule = mono_defaults.corlib->aot_module;
1839 amodule->got [1] = mscorlib_amodule->got;
1841 amodule->got [1] = amodule->got;
1845 if (mono_gc_is_moving ()) {
1848 memset (&ji, 0, sizeof (ji));
1849 ji.type = MONO_PATCH_INFO_GC_CARD_TABLE_ADDR;
1851 amodule->got [2] = mono_resolve_patch_target (NULL, mono_get_root_domain (), NULL, &ji, FALSE);
1855 * Since we store methoddef and classdef tokens when referring to methods/classes in
1856 * referenced assemblies, we depend on the exact versions of the referenced assemblies.
1857 * MS calls this 'hard binding'. This means we have to load all referenced assemblies
1858 * non-lazily, since we can't handle out-of-date errors later.
1859 * The cached class info also depends on the exact assemblies.
1861 #if defined(__native_client__)
1862 /* TODO: Don't 'load_image' on mscorlib due to a */
1863 /* recursive loading problem. This should be */
1864 /* removed if mscorlib is loaded from disk. */
1865 if (strncmp(assembly->aname.name, "mscorlib", 8)) {
1866 do_load_image = TRUE;
1868 do_load_image = FALSE;
1871 if (do_load_image) {
1872 for (i = 0; i < amodule->image_table_len; ++i)
1873 load_image (amodule, i, FALSE);
1876 if (amodule->out_of_date) {
1877 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);
1878 if (mono_aot_only) {
1879 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);
1884 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT loaded AOT Module for %s.\n", assembly->image->name);
1888 * mono_aot_register_globals:
1890 * This is called by the ctor function in AOT images compiled with the
1891 * 'no-dlsym' option.
1894 mono_aot_register_globals (gpointer *globals)
1896 g_assert_not_reached ();
1900 * mono_aot_register_module:
1902 * This should be called by embedding code to register AOT modules statically linked
1903 * into the executable. AOT_INFO should be the value of the
1904 * 'mono_aot_module_<ASSEMBLY_NAME>_info' global symbol from the AOT module.
1907 mono_aot_register_module (gpointer *aot_info)
1911 MonoAotFileInfo *info = (gpointer)aot_info;
1913 g_assert (info->version == MONO_AOT_FILE_VERSION);
1915 globals = info->globals;
1918 aname = info->assembly_name;
1920 /* This could be called before startup */
1924 if (!static_aot_modules)
1925 static_aot_modules = g_hash_table_new (g_str_hash, g_str_equal);
1927 g_hash_table_insert (static_aot_modules, aname, info);
1934 mono_aot_init (void)
1936 mono_mutex_init_recursive (&aot_mutex);
1937 mono_mutex_init_recursive (&aot_page_mutex);
1938 aot_modules = g_hash_table_new (NULL, NULL);
1940 #ifndef __native_client__
1941 mono_install_assembly_load_hook (load_aot_module, NULL);
1943 mono_counters_register ("Async JIT info size", MONO_COUNTER_INT|MONO_COUNTER_JIT, &async_jit_info_size);
1945 if (g_getenv ("MONO_LASTAOT"))
1946 mono_last_aot_method = atoi (g_getenv ("MONO_LASTAOT"));
1947 if (g_getenv ("MONO_AOT_CACHE"))
1948 use_aot_cache = TRUE;
1952 mono_aot_cleanup (void)
1954 if (aot_jit_icall_hash)
1955 g_hash_table_destroy (aot_jit_icall_hash);
1957 g_hash_table_destroy (aot_modules);
1961 decode_cached_class_info (MonoAotModule *module, MonoCachedClassInfo *info, guint8 *buf, guint8 **endbuf)
1967 info->vtable_size = decode_value (buf, &buf);
1968 if (info->vtable_size == -1)
1971 flags = decode_value (buf, &buf);
1972 info->ghcimpl = (flags >> 0) & 0x1;
1973 info->has_finalize = (flags >> 1) & 0x1;
1974 info->has_cctor = (flags >> 2) & 0x1;
1975 info->has_nested_classes = (flags >> 3) & 0x1;
1976 info->blittable = (flags >> 4) & 0x1;
1977 info->has_references = (flags >> 5) & 0x1;
1978 info->has_static_refs = (flags >> 6) & 0x1;
1979 info->no_special_static_fields = (flags >> 7) & 0x1;
1980 info->is_generic_container = (flags >> 8) & 0x1;
1982 if (info->has_cctor) {
1983 res = decode_method_ref (module, &ref, buf, &buf);
1986 info->cctor_token = ref.token;
1988 if (info->has_finalize) {
1989 res = decode_method_ref (module, &ref, buf, &buf);
1992 info->finalize_image = ref.image;
1993 info->finalize_token = ref.token;
1996 info->instance_size = decode_value (buf, &buf);
1997 info->class_size = decode_value (buf, &buf);
1998 info->packing_size = decode_value (buf, &buf);
1999 info->min_align = decode_value (buf, &buf);
2007 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
2010 MonoClass *klass = vtable->klass;
2011 MonoAotModule *amodule = klass->image->aot_module;
2013 MonoCachedClassInfo class_info;
2018 if (MONO_CLASS_IS_INTERFACE (klass) || klass->rank || !amodule)
2021 info = &amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
2024 err = decode_cached_class_info (amodule, &class_info, p, &p);
2028 for (i = 0; i < slot; ++i)
2029 decode_method_ref (amodule, &ref, p, &p);
2031 res = decode_method_ref (amodule, &ref, p, &p);
2034 if (ref.no_aot_trampoline)
2037 if (mono_metadata_token_index (ref.token) == 0 || mono_metadata_token_table (ref.token) != MONO_TABLE_METHOD)
2040 return mono_aot_get_method_from_token (domain, ref.image, ref.token);
2044 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
2046 MonoAotModule *amodule = klass->image->aot_module;
2050 if (klass->rank || !amodule)
2053 p = (guint8*)&amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
2055 err = decode_cached_class_info (amodule, res, p, &p);
2063 * mono_aot_get_class_from_name:
2065 * Obtains a MonoClass with a given namespace and a given name which is located in IMAGE,
2066 * using a cache stored in the AOT file.
2067 * Stores the resulting class in *KLASS if found, stores NULL otherwise.
2069 * Returns: TRUE if the klass was found/not found in the cache, FALSE if no aot file was
2073 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
2075 MonoAotModule *amodule = image->aot_module;
2076 guint16 *table, *entry;
2079 char full_name_buf [1024];
2081 const char *name2, *name_space2;
2083 guint32 cols [MONO_TYPEDEF_SIZE];
2084 GHashTable *nspace_table;
2086 if (!amodule || !amodule->class_name_table)
2089 amodule_lock (amodule);
2093 /* First look in the cache */
2094 if (!amodule->name_cache)
2095 amodule->name_cache = g_hash_table_new (g_str_hash, g_str_equal);
2096 nspace_table = g_hash_table_lookup (amodule->name_cache, name_space);
2098 *klass = g_hash_table_lookup (nspace_table, name);
2100 amodule_unlock (amodule);
2105 table_size = amodule->class_name_table [0];
2106 table = amodule->class_name_table + 1;
2108 if (name_space [0] == '\0')
2109 full_name = g_strdup_printf ("%s", name);
2111 if (strlen (name_space) + strlen (name) < 1000) {
2112 sprintf (full_name_buf, "%s.%s", name_space, name);
2113 full_name = full_name_buf;
2115 full_name = g_strdup_printf ("%s.%s", name_space, name);
2118 hash = mono_metadata_str_hash (full_name) % table_size;
2119 if (full_name != full_name_buf)
2122 entry = &table [hash * 2];
2124 if (entry [0] != 0) {
2125 t = &image->tables [MONO_TABLE_TYPEDEF];
2128 guint32 index = entry [0];
2129 guint32 next = entry [1];
2130 guint32 token = mono_metadata_make_token (MONO_TABLE_TYPEDEF, index);
2132 name_table_accesses ++;
2134 mono_metadata_decode_row (t, index - 1, cols, MONO_TYPEDEF_SIZE);
2136 name2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
2137 name_space2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
2139 if (!strcmp (name, name2) && !strcmp (name_space, name_space2)) {
2140 amodule_unlock (amodule);
2141 *klass = mono_class_get (image, token);
2145 amodule_lock (amodule);
2146 nspace_table = g_hash_table_lookup (amodule->name_cache, name_space);
2147 if (!nspace_table) {
2148 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
2149 g_hash_table_insert (amodule->name_cache, (char*)name_space2, nspace_table);
2151 g_hash_table_insert (nspace_table, (char*)name2, *klass);
2152 amodule_unlock (amodule);
2158 entry = &table [next * 2];
2165 amodule_unlock (amodule);
2171 * decode_mono_eh_frame:
2173 * Decode the EH information emitted by our modified LLVM compiler and construct a
2174 * MonoJitInfo structure from it.
2175 * LOCKING: Acquires the domain lock.
2178 decode_llvm_mono_eh_frame (MonoAotModule *amodule, MonoDomain *domain,
2179 MonoMethod *method, guint8 *code,
2180 MonoJitExceptionInfo *clauses, int num_clauses,
2181 int extra_size, GSList **nesting,
2182 int *this_reg, int *this_offset)
2185 guint8 *fde, *cie, *code_start, *code_end;
2186 int version, fde_count;
2188 int i, j, pos, left, right, offset, offset1, offset2, code_len, func_encoding;
2189 MonoJitExceptionInfo *ei;
2190 guint32 fde_len, ei_len, nested_len, nindex;
2191 gpointer *type_info;
2193 MonoLLVMFDEInfo info;
2195 g_assert (amodule->mono_eh_frame);
2197 p = amodule->mono_eh_frame;
2199 /* p points to data emitted by LLVM in DwarfException::EmitMonoEHFrame () */
2203 g_assert (version == 3);
2207 p = ALIGN_PTR_TO (p, 4);
2209 fde_count = *(guint32*)p;
2213 /* There is +1 entry in the table */
2214 cie = p + ((fde_count + 1) * 8);
2216 /* Binary search in the table to find the entry for code */
2217 offset = code - amodule->code;
2221 pos = (left + right) / 2;
2223 /* The table contains method index/fde offset pairs */
2224 g_assert (table [(pos * 2)] != -1);
2225 offset1 = amodule->code_offsets [table [(pos * 2)]];
2226 if (pos + 1 == fde_count) {
2227 offset2 = amodule->code_end - amodule->code;
2229 g_assert (table [(pos + 1) * 2] != -1);
2230 offset2 = amodule->code_offsets [table [(pos + 1) * 2]];
2233 if (offset < offset1)
2235 else if (offset >= offset2)
2241 code_start = amodule->code + amodule->code_offsets [table [(pos * 2)]];
2242 if (pos + 1 == fde_count) {
2243 /* The +1 entry in the table contains the length of the last method */
2244 int len = table [(pos + 1) * 2];
2245 code_end = code_start + len;
2247 code_end = amodule->code + amodule->code_offsets [table [(pos + 1) * 2]];
2249 code_len = code_end - code_start;
2251 g_assert (code >= code_start && code < code_end);
2253 if (amodule->thumb_end && (guint8*)code_start < amodule->thumb_end)
2254 /* Clear thumb flag */
2255 code_start = (guint8*)(((mgreg_t)code_start) & ~1);
2257 fde = amodule->mono_eh_frame + table [(pos * 2) + 1];
2258 /* This won't overflow because there is +1 entry in the table */
2259 fde_len = table [(pos * 2) + 2 + 1] - table [(pos * 2) + 1];
2261 mono_unwind_decode_llvm_mono_fde (fde, fde_len, cie, code_start, &info);
2263 ei_len = info.ex_info_len;
2264 type_info = info.type_info;
2265 *this_reg = info.this_reg;
2266 *this_offset = info.this_offset;
2268 /* Count number of nested clauses */
2270 for (i = 0; i < ei_len; ++i) {
2271 /* This might be unaligned */
2272 gint32 cindex1 = read32 (type_info [i]);
2275 for (l = nesting [cindex1]; l; l = l->next) {
2276 gint32 nesting_cindex = GPOINTER_TO_INT (l->data);
2278 for (j = 0; j < ei_len; ++j) {
2279 gint32 cindex2 = read32 (type_info [j]);
2281 if (cindex2 == nesting_cindex)
2288 * LLVM might represent one IL region with multiple regions, so have to
2289 * allocate a new JI.
2292 mono_domain_alloc0_lock_free (domain, MONO_SIZEOF_JIT_INFO + (sizeof (MonoJitExceptionInfo) * (ei_len + nested_len)) + extra_size);
2294 jinfo->code_size = code_len;
2295 jinfo->unwind_info = mono_cache_unwind_info (info.unw_info, info.unw_info_len);
2296 jinfo->d.method = method;
2297 jinfo->code_start = code;
2298 jinfo->domain_neutral = 0;
2299 /* This signals that unwind_info points to a normal cached unwind info */
2300 jinfo->from_aot = 0;
2301 jinfo->num_clauses = ei_len + nested_len;
2303 for (i = 0; i < ei_len; ++i) {
2305 * orig_jinfo contains the original IL exception info saved by the AOT
2306 * compiler, we have to combine that with the information produced by LLVM
2308 /* The type_info entries contain IL clause indexes */
2309 int clause_index = read32 (type_info [i]);
2310 MonoJitExceptionInfo *jei = &jinfo->clauses [i];
2311 MonoJitExceptionInfo *orig_jei = &clauses [clause_index];
2313 g_assert (clause_index < num_clauses);
2314 jei->flags = orig_jei->flags;
2315 jei->data.catch_class = orig_jei->data.catch_class;
2317 jei->try_start = ei [i].try_start;
2318 jei->try_end = ei [i].try_end;
2319 jei->handler_start = ei [i].handler_start;
2321 /* Make sure we transition to thumb when a handler starts */
2322 if (amodule->thumb_end && (guint8*)jei->handler_start < amodule->thumb_end)
2323 jei->handler_start = (void*)((mgreg_t)jei->handler_start + 1);
2326 /* See exception_cb () in mini-llvm.c as to why this is needed */
2328 for (i = 0; i < ei_len; ++i) {
2329 gint32 cindex1 = read32 (type_info [i]);
2332 for (l = nesting [cindex1]; l; l = l->next) {
2333 gint32 nesting_cindex = GPOINTER_TO_INT (l->data);
2335 for (j = 0; j < ei_len; ++j) {
2336 gint32 cindex2 = read32 (type_info [j]);
2338 if (cindex2 == nesting_cindex) {
2340 * The try interval comes from the nested clause, everything else from the
2343 memcpy (&jinfo->clauses [nindex], &jinfo->clauses [j], sizeof (MonoJitExceptionInfo));
2344 jinfo->clauses [nindex].try_start = jinfo->clauses [i].try_start;
2345 jinfo->clauses [nindex].try_end = jinfo->clauses [i].try_end;
2351 g_assert (nindex == ei_len + nested_len);
2357 alloc0_jit_info_data (MonoDomain *domain, int size, gboolean async_context)
2361 if (async_context) {
2362 res = mono_domain_alloc0_lock_free (domain, size);
2363 InterlockedExchangeAdd (&async_jit_info_size, size);
2365 res = mono_domain_alloc0 (domain, size);
2371 * LOCKING: Acquires the domain lock.
2372 * In async context, this is async safe.
2375 decode_exception_debug_info (MonoAotModule *amodule, MonoDomain *domain,
2376 MonoMethod *method, guint8* ex_info, guint8 *addr,
2377 guint8 *code, guint32 code_len)
2379 int i, buf_len, num_clauses, len;
2381 guint unwind_info, flags;
2382 gboolean has_generic_jit_info, has_dwarf_unwind_info, has_clauses, has_seq_points, has_try_block_holes, has_arch_eh_jit_info;
2383 gboolean from_llvm, has_gc_map;
2385 int generic_info_size, try_holes_info_size, num_holes, arch_eh_jit_info_size;
2386 int this_reg = 0, this_offset = 0;
2389 /* Load the method info from the AOT file */
2390 async = mono_thread_info_is_async_context ();
2393 flags = decode_value (p, &p);
2394 has_generic_jit_info = (flags & 1) != 0;
2395 has_dwarf_unwind_info = (flags & 2) != 0;
2396 has_clauses = (flags & 4) != 0;
2397 has_seq_points = (flags & 8) != 0;
2398 from_llvm = (flags & 16) != 0;
2399 has_try_block_holes = (flags & 32) != 0;
2400 has_gc_map = (flags & 64) != 0;
2401 has_arch_eh_jit_info = (flags & 128) != 0;
2403 if (has_dwarf_unwind_info) {
2404 unwind_info = decode_value (p, &p);
2405 g_assert (unwind_info < (1 << 30));
2407 unwind_info = decode_value (p, &p);
2409 if (has_generic_jit_info)
2410 generic_info_size = sizeof (MonoGenericJitInfo);
2412 generic_info_size = 0;
2414 if (has_try_block_holes) {
2415 num_holes = decode_value (p, &p);
2416 try_holes_info_size = sizeof (MonoTryBlockHoleTableJitInfo) + num_holes * sizeof (MonoTryBlockHoleJitInfo);
2418 num_holes = try_holes_info_size = 0;
2420 /* Exception table */
2422 num_clauses = decode_value (p, &p);
2425 if (has_arch_eh_jit_info)
2426 arch_eh_jit_info_size = sizeof (MonoArchEHJitInfo);
2428 arch_eh_jit_info_size = 0;
2431 MonoJitExceptionInfo *clauses;
2438 * Part of the info is encoded by the AOT compiler, the rest is in the .eh_frame
2441 clauses = g_new0 (MonoJitExceptionInfo, num_clauses);
2442 nesting = g_new0 (GSList*, num_clauses);
2444 for (i = 0; i < num_clauses; ++i) {
2445 MonoJitExceptionInfo *ei = &clauses [i];
2447 ei->flags = decode_value (p, &p);
2449 if (decode_value (p, &p))
2450 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
2452 /* Read the list of nesting clauses */
2454 int nesting_index = decode_value (p, &p);
2455 if (nesting_index == -1)
2457 nesting [i] = g_slist_prepend (nesting [i], GINT_TO_POINTER (nesting_index));
2461 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);
2462 jinfo->from_llvm = 1;
2465 for (i = 0; i < num_clauses; ++i)
2466 g_slist_free (nesting [i]);
2469 len = MONO_SIZEOF_JIT_INFO + (sizeof (MonoJitExceptionInfo) * num_clauses) + generic_info_size + try_holes_info_size + arch_eh_jit_info_size;
2470 jinfo = alloc0_jit_info_data (domain, len, async);
2471 jinfo->num_clauses = num_clauses;
2473 for (i = 0; i < jinfo->num_clauses; ++i) {
2474 MonoJitExceptionInfo *ei = &jinfo->clauses [i];
2476 ei->flags = decode_value (p, &p);
2478 ei->exvar_offset = decode_value (p, &p);
2480 if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER || ei->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
2481 ei->data.filter = code + decode_value (p, &p);
2483 int len = decode_value (p, &p);
2489 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
2493 ei->try_start = code + decode_value (p, &p);
2494 ei->try_end = code + decode_value (p, &p);
2495 ei->handler_start = code + decode_value (p, &p);
2498 jinfo->code_size = code_len;
2499 jinfo->unwind_info = unwind_info;
2500 jinfo->d.method = method;
2501 jinfo->code_start = code;
2502 jinfo->domain_neutral = 0;
2503 jinfo->from_aot = 1;
2507 * Set all the 'has' flags, the mono_jit_info_get () functions depends on this to
2508 * compute the addresses of data blocks.
2510 if (has_generic_jit_info)
2511 jinfo->has_generic_jit_info = 1;
2512 if (has_arch_eh_jit_info)
2513 jinfo->has_arch_eh_info = 1;
2514 if (has_try_block_holes)
2515 jinfo->has_try_block_holes = 1;
2517 if (has_try_block_holes) {
2518 MonoTryBlockHoleTableJitInfo *table;
2520 g_assert (jinfo->has_try_block_holes);
2522 table = mono_jit_info_get_try_block_hole_table_info (jinfo);
2525 table->num_holes = (guint16)num_holes;
2526 for (i = 0; i < num_holes; ++i) {
2527 MonoTryBlockHoleJitInfo *hole = &table->holes [i];
2528 hole->clause = decode_value (p, &p);
2529 hole->length = decode_value (p, &p);
2530 hole->offset = decode_value (p, &p);
2534 if (has_arch_eh_jit_info) {
2535 MonoArchEHJitInfo *eh_info;
2537 g_assert (jinfo->has_arch_eh_info);
2539 eh_info = mono_jit_info_get_arch_eh_info (jinfo);
2540 eh_info->stack_size = decode_value (p, &p);
2544 /* The rest is not needed in async mode */
2545 jinfo->async = TRUE;
2546 jinfo->d.aot_info = amodule;
2551 if (has_generic_jit_info) {
2552 MonoGenericJitInfo *gi;
2555 g_assert (jinfo->has_generic_jit_info);
2557 gi = mono_jit_info_get_generic_jit_info (jinfo);
2560 gi->nlocs = decode_value (p, &p);
2562 gi->locations = alloc0_jit_info_data (domain, gi->nlocs * sizeof (MonoDwarfLocListEntry), async);
2563 for (i = 0; i < gi->nlocs; ++i) {
2564 MonoDwarfLocListEntry *entry = &gi->locations [i];
2566 entry->is_reg = decode_value (p, &p);
2567 entry->reg = decode_value (p, &p);
2569 entry->offset = decode_value (p, &p);
2571 entry->from = decode_value (p, &p);
2572 entry->to = decode_value (p, &p);
2576 gi->has_this = this_reg != -1;
2577 gi->this_reg = this_reg;
2578 gi->this_offset = this_offset;
2580 gi->has_this = decode_value (p, &p);
2581 gi->this_reg = decode_value (p, &p);
2582 gi->this_offset = decode_value (p, &p);
2586 len = decode_value (p, &p);
2590 jinfo->d.method = decode_resolve_method_ref (amodule, p, &p);
2592 gi->generic_sharing_context = g_new0 (MonoGenericSharingContext, 1);
2593 if (decode_value (p, &p)) {
2596 MonoGenericSharingContext *gsctx = gi->generic_sharing_context;
2598 n = decode_value (p, &p);
2600 gsctx->var_is_vt = alloc0_jit_info_data (domain, sizeof (gboolean) * n, async);
2601 for (i = 0; i < n; ++i)
2602 gsctx->var_is_vt [i] = decode_value (p, &p);
2604 n = decode_value (p, &p);
2606 gsctx->mvar_is_vt = alloc0_jit_info_data (domain, sizeof (gboolean) * n, async);
2607 for (i = 0; i < n; ++i)
2608 gsctx->mvar_is_vt [i] = decode_value (p, &p);
2613 if (method && has_seq_points) {
2614 MonoSeqPointInfo *seq_points;
2615 int il_offset, native_offset, last_il_offset, last_native_offset, j;
2617 int len = decode_value (p, &p);
2619 seq_points = g_malloc0 (sizeof (MonoSeqPointInfo) + (len - MONO_ZERO_LEN_ARRAY) * sizeof (SeqPoint));
2620 seq_points->len = len;
2621 last_il_offset = last_native_offset = 0;
2622 for (i = 0; i < len; ++i) {
2623 SeqPoint *sp = &seq_points->seq_points [i];
2624 il_offset = last_il_offset + decode_value (p, &p);
2625 native_offset = last_native_offset + decode_value (p, &p);
2627 sp->il_offset = il_offset;
2628 sp->native_offset = native_offset;
2630 sp->flags = decode_value (p, &p);
2631 sp->next_len = decode_value (p, &p);
2632 sp->next = g_new (int, sp->next_len);
2633 for (j = 0; j < sp->next_len; ++j)
2634 sp->next [j] = decode_value (p, &p);
2636 last_il_offset = il_offset;
2637 last_native_offset = native_offset;
2640 mono_domain_lock (domain);
2641 g_hash_table_insert (domain_jit_info (domain)->seq_points, method, seq_points);
2642 mono_domain_unlock (domain);
2645 /* Load debug info */
2646 buf_len = decode_value (p, &p);
2648 mono_debug_add_aot_method (domain, method, code, p, buf_len);
2652 int map_size = decode_value (p, &p);
2653 /* The GC map requires 4 bytes of alignment */
2654 while ((guint64)(gsize)p % 4)
2660 if (amodule != jinfo->d.method->klass->image->aot_module) {
2663 ji_to_amodule = g_hash_table_new (NULL, NULL);
2664 g_hash_table_insert (ji_to_amodule, jinfo, amodule);
2672 * mono_aot_get_unwind_info:
2674 * Return a pointer to the DWARF unwind info belonging to JI.
2677 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
2679 MonoAotModule *amodule;
2681 guint8 *code = ji->code_start;
2684 amodule = ji->d.aot_info;
2686 amodule = jinfo_get_method (ji)->klass->image->aot_module;
2688 g_assert (ji->from_aot);
2690 if (!(code >= amodule->code && code <= amodule->code_end)) {
2691 /* ji belongs to a different aot module than amodule */
2693 g_assert (ji_to_amodule);
2694 amodule = g_hash_table_lookup (ji_to_amodule, ji);
2696 g_assert (code >= amodule->code && code <= amodule->code_end);
2700 /* The upper 16 bits of ji->unwind_info might contain the epilog offset */
2701 p = amodule->unwind_info + (ji->unwind_info & 0xffff);
2702 *unwind_info_len = decode_value (p, &p);
2706 static G_GNUC_UNUSED int
2707 compare_ints (const void *a, const void *b)
2709 return *(gint32*)a - *(gint32*)b;
2713 msort_code_offsets_internal (gint32 *array, int lo, int hi, gint32 *scratch)
2715 int mid = (lo + hi) / 2;
2722 for (i = lo; i < hi; ++i)
2723 if (array [(i * 2)] > array [(i * 2) + 2])
2726 /* Already sorted */
2730 msort_code_offsets_internal (array, lo, mid, scratch);
2731 msort_code_offsets_internal (array, mid + 1, hi, scratch);
2733 if (array [mid * 2] < array [(mid + 1) * 2])
2739 for (i = lo; i <= hi; i ++) {
2740 if (t_lo <= mid && ((t_hi > hi) || array [t_lo * 2] < array [t_hi * 2])) {
2741 scratch [(i * 2)] = array [t_lo * 2];
2742 scratch [(i * 2) + 1] = array [(t_lo *2) + 1];
2745 scratch [(i * 2)] = array [t_hi * 2];
2746 scratch [(i * 2) + 1] = array [(t_hi *2) + 1];
2750 for (i = lo; i <= hi; ++i) {
2751 array [(i * 2)] = scratch [i * 2];
2752 array [(i * 2) + 1] = scratch [(i * 2) + 1];
2757 msort_code_offsets (gint32 *array, int len)
2761 scratch = g_new (gint32, len * 2);
2762 msort_code_offsets_internal (array, 0, len - 1, scratch);
2767 * mono_aot_find_jit_info:
2769 * In async context, the resulting MonoJitInfo will not have its method field set, and it will not be added
2770 * to the jit info tables.
2771 * FIXME: Large sizes in the lock free allocator
2774 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
2776 int pos, left, right, offset, offset1, offset2, code_len;
2777 int method_index, table_len;
2779 MonoAotModule *amodule = image->aot_module;
2780 MonoMethod *method = NULL;
2782 guint8 *code, *ex_info, *p;
2785 gint32 *code_offsets;
2792 nmethods = amodule->info.nmethods;
2794 if (domain != mono_get_root_domain ())
2798 async = mono_thread_info_is_async_context ();
2800 offset = (guint8*)addr - amodule->code;
2802 /* Compute a sorted table mapping code offsets to method indexes. */
2803 if (!amodule->sorted_code_offsets) {
2805 code_offsets = g_new0 (gint32, nmethods * 2);
2807 for (i = 0; i < nmethods; ++i) {
2808 /* Skip the -1 entries to speed up sorting */
2809 if (amodule->code_offsets [i] == 0xffffffff)
2811 code_offsets [(offsets_len * 2)] = amodule->code_offsets [i];
2812 code_offsets [(offsets_len *2) + 1] = i;
2815 /* Use a merge sort as this is mostly sorted */
2816 msort_code_offsets (code_offsets, offsets_len);
2817 //qsort (code_offsets, offsets_len, sizeof (gint32) * 2, compare_ints);
2818 for (i = 0; i < offsets_len -1; ++i)
2819 g_assert (code_offsets [(i * 2)] <= code_offsets [(i + 1) * 2]);
2821 amodule->sorted_code_offsets_len = offsets_len;
2822 mono_memory_barrier ();
2823 if (InterlockedCompareExchangePointer ((gpointer*)&amodule->sorted_code_offsets, code_offsets, NULL) != NULL)
2824 /* Somebody got in before us */
2825 g_free (code_offsets);
2828 code_offsets = amodule->sorted_code_offsets;
2829 offsets_len = amodule->sorted_code_offsets_len;
2831 if (offsets_len > 0 && (offset < code_offsets [0] || offset >= (amodule->code_end - amodule->code)))
2834 /* Binary search in the sorted_code_offsets table */
2836 right = offsets_len;
2838 pos = (left + right) / 2;
2840 offset1 = code_offsets [(pos * 2)];
2841 if (pos + 1 == offsets_len)
2842 offset2 = amodule->code_end - amodule->code;
2844 offset2 = code_offsets [(pos + 1) * 2];
2846 if (offset < offset1)
2848 else if (offset >= offset2)
2854 g_assert (offset >= code_offsets [(pos * 2)]);
2855 if (pos + 1 < offsets_len)
2856 g_assert (offset < code_offsets [((pos + 1) * 2)]);
2857 method_index = code_offsets [(pos * 2) + 1];
2859 /* In async mode, jinfo is not added to the normal jit info table, so have to cache it ourselves */
2861 JitInfoMap *table = amodule->async_jit_info_table;
2865 len = table [0].method_index;
2866 for (i = 1; i < len; ++i) {
2867 if (table [i].method_index == method_index)
2868 return table [i].jinfo;
2873 code = &amodule->code [amodule->code_offsets [method_index]];
2874 ex_info = &amodule->blob [mono_aot_get_offset (amodule->ex_info_offsets, method_index)];
2876 if (pos == offsets_len - 1)
2877 code_len = amodule->code_end - code;
2879 code_len = code_offsets [(pos + 1) * 2] - code_offsets [pos * 2];
2881 g_assert ((guint8*)code <= (guint8*)addr && (guint8*)addr < (guint8*)code + code_len);
2883 /* Might be a wrapper/extra method */
2885 if (amodule->extra_methods) {
2886 amodule_lock (amodule);
2887 method = g_hash_table_lookup (amodule->extra_methods, GUINT_TO_POINTER (method_index));
2888 amodule_unlock (amodule);
2894 if (method_index >= image->tables [MONO_TABLE_METHOD].rows) {
2896 * This is hit for extra methods which are called directly, so they are
2897 * not in amodule->extra_methods.
2899 table_len = amodule->extra_method_info_offsets [0];
2900 table = amodule->extra_method_info_offsets + 1;
2907 pos = ((left + right) / 2);
2909 g_assert (pos < table_len);
2911 if (table [pos * 2] < method_index)
2913 else if (table [pos * 2] > method_index)
2919 p = amodule->blob + table [(pos * 2) + 1];
2920 method = decode_resolve_method_ref (amodule, p, &p);
2922 /* Happens when a random address is passed in which matches a not-yey called wrapper encoded using its name */
2925 token = mono_metadata_make_token (MONO_TABLE_METHOD, method_index + 1);
2926 method = mono_get_method (image, token, NULL);
2933 //printf ("F: %s\n", mono_method_full_name (method, TRUE));
2935 jinfo = decode_exception_debug_info (amodule, domain, method, ex_info, addr, code, code_len);
2937 g_assert ((guint8*)addr >= (guint8*)jinfo->code_start);
2938 g_assert ((guint8*)addr < (guint8*)jinfo->code_start + jinfo->code_size);
2940 /* Add it to the normal JitInfo tables */
2942 JitInfoMap *old_table, *new_table;
2946 * Use a simple inmutable table with linear search to cache async jit info entries.
2947 * This assumes that the number of entries is small.
2950 /* Copy the table, adding a new entry at the end */
2951 old_table = amodule->async_jit_info_table;
2953 len = old_table[0].method_index;
2956 new_table = alloc0_jit_info_data (domain, (len + 1) * sizeof (JitInfoMap), async);
2958 memcpy (new_table, old_table, len * sizeof (JitInfoMap));
2959 new_table [0].method_index = len + 1;
2960 new_table [len].method_index = method_index;
2961 new_table [len].jinfo = jinfo;
2963 mono_memory_barrier ();
2964 if (InterlockedCompareExchangePointer ((gpointer)&amodule->async_jit_info_table, new_table, old_table) == old_table)
2968 mono_jit_info_table_add (domain, jinfo);
2975 decode_patch (MonoAotModule *aot_module, MonoMemPool *mp, MonoJumpInfo *ji, guint8 *buf, guint8 **endbuf)
2983 case MONO_PATCH_INFO_METHOD:
2984 case MONO_PATCH_INFO_METHOD_JUMP:
2985 case MONO_PATCH_INFO_ICALL_ADDR:
2986 case MONO_PATCH_INFO_METHOD_RGCTX:
2987 case MONO_PATCH_INFO_METHOD_CODE_SLOT: {
2991 res = decode_method_ref (aot_module, &ref, p, &p);
2995 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)) {
2996 ji->data.target = mono_create_ftnptr (mono_domain_get (), mono_create_jit_trampoline_from_token (ref.image, ref.token));
2997 ji->type = MONO_PATCH_INFO_ABS;
3001 ji->data.method = ref.method;
3003 ji->data.method = mono_get_method (ref.image, ref.token, NULL);
3004 g_assert (ji->data.method);
3005 mono_class_init (ji->data.method->klass);
3009 case MONO_PATCH_INFO_INTERNAL_METHOD:
3010 case MONO_PATCH_INFO_JIT_ICALL_ADDR: {
3011 guint32 len = decode_value (p, &p);
3013 ji->data.name = (char*)p;
3017 case MONO_PATCH_INFO_METHODCONST:
3019 ji->data.method = decode_resolve_method_ref (aot_module, p, &p);
3020 if (!ji->data.method)
3023 case MONO_PATCH_INFO_VTABLE:
3024 case MONO_PATCH_INFO_CLASS:
3025 case MONO_PATCH_INFO_IID:
3026 case MONO_PATCH_INFO_ADJUSTED_IID:
3027 case MONO_PATCH_INFO_CLASS_INIT:
3029 ji->data.klass = decode_klass_ref (aot_module, p, &p);
3030 if (!ji->data.klass)
3033 case MONO_PATCH_INFO_DELEGATE_TRAMPOLINE:
3034 ji->data.del_tramp = mono_mempool_alloc0 (mp, sizeof (MonoClassMethodPair));
3035 ji->data.del_tramp->klass = decode_klass_ref (aot_module, p, &p);
3036 if (!ji->data.del_tramp->klass)
3038 if (decode_value (p, &p)) {
3039 ji->data.del_tramp->method = decode_resolve_method_ref (aot_module, p, &p);
3040 if (!ji->data.del_tramp->method)
3044 case MONO_PATCH_INFO_IMAGE:
3045 ji->data.image = load_image (aot_module, decode_value (p, &p), TRUE);
3046 if (!ji->data.image)
3049 case MONO_PATCH_INFO_FIELD:
3050 case MONO_PATCH_INFO_SFLDA:
3052 ji->data.field = decode_field_info (aot_module, p, &p);
3053 if (!ji->data.field)
3056 case MONO_PATCH_INFO_SWITCH:
3057 ji->data.table = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoBBTable));
3058 ji->data.table->table_size = decode_value (p, &p);
3059 table = mono_domain_alloc (mono_domain_get (), sizeof (gpointer) * ji->data.table->table_size);
3060 ji->data.table->table = (MonoBasicBlock**)table;
3061 for (i = 0; i < ji->data.table->table_size; i++)
3062 table [i] = (gpointer)(gssize)decode_value (p, &p);
3064 case MONO_PATCH_INFO_R4: {
3067 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (float));
3068 val = decode_value (p, &p);
3069 *(float*)ji->data.target = *(float*)&val;
3072 case MONO_PATCH_INFO_R8: {
3076 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (double));
3078 val [0] = decode_value (p, &p);
3079 val [1] = decode_value (p, &p);
3080 v = ((guint64)val [1] << 32) | ((guint64)val [0]);
3081 *(double*)ji->data.target = *(double*)&v;
3084 case MONO_PATCH_INFO_LDSTR:
3085 image = load_image (aot_module, decode_value (p, &p), TRUE);
3088 ji->data.token = mono_jump_info_token_new (mp, image, MONO_TOKEN_STRING + decode_value (p, &p));
3090 case MONO_PATCH_INFO_RVA:
3091 case MONO_PATCH_INFO_DECLSEC:
3092 case MONO_PATCH_INFO_LDTOKEN:
3093 case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
3095 image = load_image (aot_module, decode_value (p, &p), TRUE);
3098 ji->data.token = mono_jump_info_token_new (mp, image, decode_value (p, &p));
3100 ji->data.token->has_context = decode_value (p, &p);
3101 if (ji->data.token->has_context) {
3102 gboolean res = decode_generic_context (aot_module, &ji->data.token->context, p, &p);
3107 case MONO_PATCH_INFO_EXC_NAME:
3108 ji->data.klass = decode_klass_ref (aot_module, p, &p);
3109 if (!ji->data.klass)
3111 ji->data.name = ji->data.klass->name;
3113 case MONO_PATCH_INFO_METHOD_REL:
3114 ji->data.offset = decode_value (p, &p);
3116 case MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG:
3117 case MONO_PATCH_INFO_GENERIC_CLASS_INIT:
3118 case MONO_PATCH_INFO_MONITOR_ENTER:
3119 case MONO_PATCH_INFO_MONITOR_EXIT:
3120 case MONO_PATCH_INFO_GC_CARD_TABLE_ADDR:
3121 case MONO_PATCH_INFO_CASTCLASS_CACHE:
3122 case MONO_PATCH_INFO_JIT_TLS_ID:
3124 case MONO_PATCH_INFO_RGCTX_FETCH: {
3126 MonoJumpInfoRgctxEntry *entry;
3127 guint32 offset, val;
3130 offset = decode_value (p, &p);
3131 val = decode_value (p, &p);
3133 entry = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
3134 p2 = aot_module->blob + offset;
3135 entry->method = decode_resolve_method_ref (aot_module, p2, &p2);
3136 entry->in_mrgctx = ((val & 1) > 0) ? TRUE : FALSE;
3137 entry->info_type = (val >> 1) & 0xff;
3138 entry->data = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
3139 entry->data->type = (val >> 9) & 0xff;
3141 res = decode_patch (aot_module, mp, entry->data, p, &p);
3144 ji->data.rgctx_entry = entry;
3147 case MONO_PATCH_INFO_SEQ_POINT_INFO:
3149 case MONO_PATCH_INFO_LLVM_IMT_TRAMPOLINE: {
3150 MonoJumpInfoImtTramp *imt_tramp = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoImtTramp));
3152 imt_tramp->method = decode_resolve_method_ref (aot_module, p, &p);
3153 imt_tramp->vt_offset = decode_value (p, &p);
3155 ji->data.imt_tramp = imt_tramp;
3158 case MONO_PATCH_INFO_SIGNATURE:
3159 ji->data.target = decode_signature (aot_module, p, &p);
3161 case MONO_PATCH_INFO_TLS_OFFSET:
3162 ji->data.target = GINT_TO_POINTER (decode_value (p, &p));
3164 case MONO_PATCH_INFO_GSHAREDVT_CALL: {
3165 MonoJumpInfoGSharedVtCall *info = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoGSharedVtCall));
3166 info->sig = decode_signature (aot_module, p, &p);
3167 g_assert (info->sig);
3168 info->method = decode_resolve_method_ref (aot_module, p, &p);
3169 g_assert (info->method);
3171 ji->data.target = info;
3174 case MONO_PATCH_INFO_GSHAREDVT_METHOD: {
3175 MonoGSharedVtMethodInfo *info = mono_mempool_alloc0 (mp, sizeof (MonoGSharedVtMethodInfo));
3178 info->method = decode_resolve_method_ref (aot_module, p, &p);
3179 g_assert (info->method);
3180 info->num_entries = decode_value (p, &p);
3181 info->count_entries = info->num_entries;
3182 info->entries = mono_mempool_alloc0 (mp, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->num_entries);
3183 for (i = 0; i < info->num_entries; ++i) {
3184 MonoRuntimeGenericContextInfoTemplate *template = &info->entries [i];
3186 template->info_type = decode_value (p, &p);
3187 switch (mini_rgctx_info_type_to_patch_info_type (template->info_type)) {
3188 case MONO_PATCH_INFO_CLASS: {
3189 MonoClass *klass = decode_klass_ref (aot_module, p, &p);
3192 template->data = &klass->byval_arg;
3195 case MONO_PATCH_INFO_FIELD:
3196 template->data = decode_field_info (aot_module, p, &p);
3197 if (!template->data)
3201 g_assert_not_reached ();
3205 ji->data.target = info;
3209 g_warning ("unhandled type %d", ji->type);
3210 g_assert_not_reached ();
3221 static MonoJumpInfo*
3222 load_patch_info (MonoAotModule *aot_module, MonoMemPool *mp, int n_patches,
3223 guint32 **got_slots,
3224 guint8 *buf, guint8 **endbuf)
3226 MonoJumpInfo *patches;
3232 patches = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo) * n_patches);
3234 *got_slots = g_malloc (sizeof (guint32) * n_patches);
3236 for (pindex = 0; pindex < n_patches; ++pindex) {
3237 MonoJumpInfo *ji = &patches [pindex];
3242 got_offset = decode_value (p, &p);
3244 if (aot_module->got [got_offset]) {
3245 /* Already loaded */
3246 //printf ("HIT!\n");
3248 shared_p = aot_module->blob + mono_aot_get_offset (aot_module->got_info_offsets, got_offset);
3250 ji->type = decode_value (shared_p, &shared_p);
3252 res = decode_patch (aot_module, mp, ji, shared_p, &shared_p);
3257 (*got_slots) [pindex] = got_offset;
3264 g_free (*got_slots);
3271 register_jump_target_got_slot (MonoDomain *domain, MonoMethod *method, gpointer *got_slot)
3274 * Jump addresses cannot be patched by the trampoline code since it
3275 * does not have access to the caller's address. Instead, we collect
3276 * the addresses of the GOT slots pointing to a method, and patch
3277 * them after the method has been compiled.
3279 MonoJitDomainInfo *info = domain_jit_info (domain);
3282 mono_domain_lock (domain);
3283 if (!info->jump_target_got_slot_hash)
3284 info->jump_target_got_slot_hash = g_hash_table_new (NULL, NULL);
3285 list = g_hash_table_lookup (info->jump_target_got_slot_hash, method);
3286 list = g_slist_prepend (list, got_slot);
3287 g_hash_table_insert (info->jump_target_got_slot_hash, method, list);
3288 mono_domain_unlock (domain);
3294 * Load the method identified by METHOD_INDEX from the AOT image. Return a
3295 * pointer to the native code of the method, or NULL if not found.
3296 * METHOD might not be set if the caller only has the image/token info.
3299 load_method (MonoDomain *domain, MonoAotModule *amodule, MonoImage *image, MonoMethod *method, guint32 token, int method_index)
3302 gboolean from_plt = method == NULL;
3304 int i, pindex, n_patches, used_strings;
3305 gboolean keep_patches = TRUE;
3307 MonoJitInfo *jinfo = NULL;
3308 guint8 *code, *info;
3310 if (mono_profiler_get_events () & MONO_PROFILE_ENTER_LEAVE)
3313 if ((domain != mono_get_root_domain ()) && (!(amodule->info.opts & MONO_OPT_SHARED)))
3314 /* Non shared AOT code can't be used in other appdomains */
3317 if (amodule->out_of_date)
3320 if (amodule->code_offsets [method_index] == 0xffffffff) {
3321 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
3325 method = mono_get_method (image, token, NULL);
3326 full_name = mono_method_full_name (method, TRUE);
3327 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.", full_name);
3333 code = &amodule->code [amodule->code_offsets [method_index]];
3335 info = &amodule->blob [mono_aot_get_offset (amodule->method_info_offsets, method_index)];
3337 if (amodule->thumb_end && code < amodule->thumb_end && ((amodule->info.flags & MONO_AOT_FILE_FLAG_DIRECT_METHOD_ADDRESSES) == 0)) {
3338 /* Convert this into a thumb address */
3339 g_assert ((amodule->code_offsets [method_index] & 0x1) == 0);
3340 code = &amodule->code [amodule->code_offsets [method_index] + 1];
3343 if (!amodule->methods_loaded) {
3344 amodule_lock (amodule);
3345 if (!amodule->methods_loaded) {
3348 loaded = g_new0 (guint32, amodule->info.nmethods / 32 + 1);
3349 mono_memory_barrier ();
3350 amodule->methods_loaded = loaded;
3352 amodule_unlock (amodule);
3355 if ((amodule->methods_loaded [method_index / 32] >> (method_index % 32)) & 0x1)
3358 if (mono_last_aot_method != -1) {
3359 if (mono_jit_stats.methods_aot >= mono_last_aot_method)
3361 else if (mono_jit_stats.methods_aot == mono_last_aot_method - 1) {
3363 method = mono_get_method (image, token, NULL);
3365 char *name = mono_method_full_name (method, TRUE);
3366 g_print ("LAST AOT METHOD: %s.\n", name);
3369 g_print ("LAST AOT METHOD: %p %d\n", code, method_index);
3377 klass = method->klass;
3378 decode_klass_ref (amodule, p, &p);
3380 klass = decode_klass_ref (amodule, p, &p);
3383 if (amodule->info.opts & MONO_OPT_SHARED)
3384 used_strings = decode_value (p, &p);
3388 for (i = 0; i < used_strings; i++) {
3389 guint token = decode_value (p, &p);
3390 mono_ldstr (mono_get_root_domain (), image, mono_metadata_token_index (token));
3393 if (amodule->info.opts & MONO_OPT_SHARED)
3394 keep_patches = FALSE;
3396 n_patches = decode_value (p, &p);
3398 keep_patches = FALSE;
3401 MonoJumpInfo *patches;
3407 mp = mono_mempool_new ();
3409 patches = load_patch_info (amodule, mp, n_patches, &got_slots, p, &p);
3410 if (patches == NULL)
3413 for (pindex = 0; pindex < n_patches; ++pindex) {
3414 MonoJumpInfo *ji = &patches [pindex];
3416 if (!amodule->got [got_slots [pindex]]) {
3417 amodule->got [got_slots [pindex]] = mono_resolve_patch_target (method, domain, code, ji, TRUE);
3418 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
3419 amodule->got [got_slots [pindex]] = mono_create_ftnptr (domain, amodule->got [got_slots [pindex]]);
3420 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
3421 register_jump_target_got_slot (domain, ji->data.method, &(amodule->got [got_slots [pindex]]));
3423 ji->type = MONO_PATCH_INFO_NONE;
3429 mono_mempool_destroy (mp);
3432 if (mini_get_debug_options ()->load_aot_jit_info_eagerly)
3433 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
3435 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
3439 method = mono_get_method (image, token, NULL);
3441 full_name = mono_method_full_name (method, TRUE);
3444 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
3446 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT FOUND method %s [%p - %p %p]", full_name, code, code + jinfo->code_size, info);
3450 amodule_lock (amodule);
3452 InterlockedIncrement (&mono_jit_stats.methods_aot);
3454 amodule->methods_loaded [method_index / 32] |= 1 << (method_index % 32);
3458 if (method && method->wrapper_type)
3459 g_hash_table_insert (amodule->method_to_code, method, code);
3461 amodule_unlock (amodule);
3463 if (mono_profiler_get_events () & MONO_PROFILE_JIT_COMPILATION) {
3467 method = mono_get_method (image, token, NULL);
3470 mono_profiler_method_jit (method);
3471 jinfo = mono_jit_info_table_find (domain, (char*)code);
3473 mono_profiler_method_end_jit (method, jinfo, MONO_PROFILE_OK);
3476 if (from_plt && klass && !klass->generic_container)
3477 mono_runtime_class_init (mono_class_vtable (domain, klass));
3482 /* FIXME: The space in domain->mp is wasted */
3483 if (amodule->info.opts & MONO_OPT_SHARED)
3484 /* No need to cache patches */
3485 mono_mempool_destroy (mp);
3494 find_extra_method_in_amodule (MonoAotModule *amodule, MonoMethod *method)
3496 guint32 table_size, entry_size, hash;
3497 guint32 *table, *entry;
3499 static guint32 n_extra_decodes;
3501 if (!amodule || amodule->out_of_date)
3504 table_size = amodule->extra_method_table [0];
3505 table = amodule->extra_method_table + 1;
3508 hash = mono_aot_method_hash (method) % table_size;
3510 entry = &table [hash * entry_size];
3517 guint32 key = entry [0];
3518 guint32 value = entry [1];
3519 guint32 next = entry [entry_size - 1];
3523 p = amodule->blob + key;
3526 amodule_lock (amodule);
3527 if (!amodule->method_ref_to_method)
3528 amodule->method_ref_to_method = g_hash_table_new (NULL, NULL);
3529 m = g_hash_table_lookup (amodule->method_ref_to_method, p);
3530 amodule_unlock (amodule);
3532 m = decode_resolve_method_ref_with_target (amodule, method, p, &p);
3534 amodule_lock (amodule);
3535 g_hash_table_insert (amodule->method_ref_to_method, orig_p, m);
3536 amodule_unlock (amodule);
3544 /* Special case: wrappers of shared generic methods */
3545 if (m && method->wrapper_type && m->wrapper_type == m->wrapper_type &&
3546 method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
3547 MonoMethod *w1 = mono_marshal_method_from_wrapper (method);
3548 MonoMethod *w2 = mono_marshal_method_from_wrapper (m);
3550 if (w1->is_inflated && ((MonoMethodInflated *)w1)->declaring == w2) {
3556 /* Methods decoded needlessly */
3558 //printf ("%d %s %s %p\n", n_extra_decodes, mono_method_full_name (method, TRUE), mono_method_full_name (m, TRUE), orig_p);
3563 entry = &table [next * entry_size];
3572 add_module_cb (gpointer key, gpointer value, gpointer user_data)
3574 g_ptr_array_add ((GPtrArray*)user_data, value);
3578 * find_extra_method:
3580 * Try finding METHOD in the extra_method table in all AOT images.
3581 * Return its method index, or 0xffffff if not found. Set OUT_AMODULE to the AOT
3582 * module where the method was found.
3585 find_extra_method (MonoMethod *method, MonoAotModule **out_amodule)
3591 /* Try the method's module first */
3592 *out_amodule = method->klass->image->aot_module;
3593 index = find_extra_method_in_amodule (method->klass->image->aot_module, method);
3594 if (index != 0xffffff)
3598 * Try all other modules.
3599 * This is needed because generic instances klass->image points to the image
3600 * containing the generic definition, but the native code is generated to the
3601 * AOT image which contains the reference.
3604 /* Make a copy to avoid doing the search inside the aot lock */
3605 modules = g_ptr_array_new ();
3607 g_hash_table_foreach (aot_modules, add_module_cb, modules);
3611 for (i = 0; i < modules->len; ++i) {
3612 MonoAotModule *amodule = g_ptr_array_index (modules, i);
3614 if (amodule != method->klass->image->aot_module)
3615 index = find_extra_method_in_amodule (amodule, method);
3616 if (index != 0xffffff) {
3617 *out_amodule = amodule;
3622 g_ptr_array_free (modules, TRUE);
3628 * mono_aot_get_method:
3630 * Return a pointer to the AOTed native code for METHOD if it can be found,
3632 * On platforms with function pointers, this doesn't return a function pointer.
3635 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
3637 MonoClass *klass = method->klass;
3638 guint32 method_index;
3639 MonoAotModule *amodule = klass->image->aot_module;
3645 if (amodule->out_of_date)
3648 if ((method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
3649 (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
3650 (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
3651 (method->flags & METHOD_ATTRIBUTE_ABSTRACT))
3655 * Use the original method instead of its invoke-with-check wrapper.
3656 * This is not a problem when using full-aot, since it doesn't support
3659 if (mono_aot_only && method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)
3660 return mono_aot_get_method (domain, mono_marshal_method_from_wrapper (method));
3662 g_assert (klass->inited);
3664 /* Find method index */
3665 method_index = 0xffffff;
3666 if (method->is_inflated && !method->wrapper_type && mono_method_is_generic_sharable_full (method, FALSE, FALSE, FALSE)) {
3668 * For generic methods, we store the fully shared instance in place of the
3671 method = mono_method_get_declaring_generic_method (method);
3672 method_index = mono_metadata_token_index (method->token) - 1;
3673 } else if (method->is_inflated || !method->token) {
3674 /* This hash table is used to avoid the slower search in the extra_method_table in the AOT image */
3675 amodule_lock (amodule);
3676 code = g_hash_table_lookup (amodule->method_to_code, method);
3677 amodule_unlock (amodule);
3681 method_index = find_extra_method (method, &amodule);
3683 * Special case the ICollection<T> wrappers for arrays, as they cannot
3684 * be statically enumerated, and each wrapper ends up calling the same
3687 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED && method->klass->rank && strstr (method->name, "System.Collections.Generic")) {
3688 MonoMethod *m = mono_aot_get_array_helper_from_wrapper (method);
3690 code = mono_aot_get_method (domain, m);
3696 * Special case Array.GetGenericValueImpl which is a generic icall.
3697 * Generic sharing currently can't handle it, but the icall returns data using
3698 * an out parameter, so the managed-to-native wrappers can share the same code.
3700 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass == mono_defaults.array_class && !strcmp (method->name, "GetGenericValueImpl")) {
3702 MonoGenericContext ctx;
3703 MonoType *args [16];
3705 if (mono_method_signature (method)->params [1]->type == MONO_TYPE_OBJECT)
3706 /* Avoid recursion */
3709 m = mono_class_get_method_from_name (mono_defaults.array_class, "GetGenericValueImpl", 2);
3712 memset (&ctx, 0, sizeof (ctx));
3713 args [0] = &mono_defaults.object_class->byval_arg;
3714 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
3716 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method (m, &ctx), TRUE, TRUE);
3719 * Get the code for the <object> instantiation which should be emitted into
3720 * the mscorlib aot image by the AOT compiler.
3722 code = mono_aot_get_method (domain, m);
3727 /* Same for CompareExchange<T> and Exchange<T> */
3728 /* Same for Volatile.Read<T>/Write<T> */
3729 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass->image == mono_defaults.corlib &&
3730 ((!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])) ||
3731 (!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))) ||
3732 (!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]))))) {
3734 MonoGenericContext ctx;
3735 MonoType *args [16];
3736 gpointer iter = NULL;
3738 while ((m = mono_class_get_methods (method->klass, &iter))) {
3739 if (mono_method_signature (m)->generic_param_count && !strcmp (m->name, method->name))
3744 memset (&ctx, 0, sizeof (ctx));
3745 args [0] = &mono_defaults.object_class->byval_arg;
3746 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
3748 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method (m, &ctx), TRUE, TRUE);
3750 /* Avoid recursion */
3755 * Get the code for the <object> instantiation which should be emitted into
3756 * the mscorlib aot image by the AOT compiler.
3758 code = mono_aot_get_method (domain, m);
3763 if (method_index == 0xffffff && method->is_inflated && mono_method_is_generic_sharable_full (method, FALSE, TRUE, FALSE)) {
3764 /* Partial sharing */
3767 shared = mini_get_shared_method (method);
3768 method_index = find_extra_method (shared, &amodule);
3769 if (method_index != 0xffffff)
3773 if (method_index == 0xffffff && method->is_inflated && mono_method_is_generic_sharable_full (method, FALSE, FALSE, TRUE)) {
3775 /* Use the all-vt shared method since this is what was AOTed */
3776 method_index = find_extra_method (mini_get_shared_method_full (method, TRUE, TRUE), &amodule);
3777 if (method_index != 0xffffff)
3778 method = mini_get_shared_method_full (method, TRUE, FALSE);
3781 if (method_index == 0xffffff) {
3782 if (mono_aot_only && mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
3785 full_name = mono_method_full_name (method, TRUE);
3786 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.", full_name);
3792 if (method_index == 0xffffff)
3795 /* Needed by find_jit_info */
3796 amodule_lock (amodule);
3797 if (!amodule->extra_methods)
3798 amodule->extra_methods = g_hash_table_new (NULL, NULL);
3799 g_hash_table_insert (amodule->extra_methods, GUINT_TO_POINTER (method_index), method);
3800 amodule_unlock (amodule);
3803 method_index = mono_metadata_token_index (method->token) - 1;
3806 return load_method (domain, amodule, klass->image, method, method->token, method_index);
3810 * Same as mono_aot_get_method, but we try to avoid loading any metadata from the
3814 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
3816 MonoAotModule *aot_module = image->aot_module;
3822 method_index = mono_metadata_token_index (token) - 1;
3824 return load_method (domain, aot_module, image, NULL, token, method_index);
3830 } IsGotEntryUserData;
3833 check_is_got_entry (gpointer key, gpointer value, gpointer user_data)
3835 IsGotEntryUserData *data = (IsGotEntryUserData*)user_data;
3836 MonoAotModule *aot_module = (MonoAotModule*)value;
3838 if (aot_module->got && (data->addr >= (guint8*)(aot_module->got)) && (data->addr < (guint8*)(aot_module->got + aot_module->info.got_size)))
3843 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
3845 IsGotEntryUserData user_data;
3850 user_data.addr = addr;
3851 user_data.res = FALSE;
3853 g_hash_table_foreach (aot_modules, check_is_got_entry, &user_data);
3856 return user_data.res;
3861 MonoAotModule *module;
3862 } FindAotModuleUserData;
3865 find_aot_module_cb (gpointer key, gpointer value, gpointer user_data)
3867 FindAotModuleUserData *data = (FindAotModuleUserData*)user_data;
3868 MonoAotModule *aot_module = (MonoAotModule*)value;
3870 if ((data->addr >= (guint8*)(aot_module->code)) && (data->addr < (guint8*)(aot_module->code_end)))
3871 data->module = aot_module;
3874 static inline MonoAotModule*
3875 find_aot_module (guint8 *code)
3877 FindAotModuleUserData user_data;
3882 /* Reading these need no locking */
3883 if (((gsize)code < aot_code_low_addr) || ((gsize)code > aot_code_high_addr))
3886 user_data.addr = code;
3887 user_data.module = NULL;
3890 g_hash_table_foreach (aot_modules, find_aot_module_cb, &user_data);
3893 return user_data.module;
3897 mono_aot_patch_plt_entry (guint8 *code, guint8 *plt_entry, gpointer *got, mgreg_t *regs, guint8 *addr)
3899 MonoAotModule *amodule;
3902 * Since AOT code is only used in the root domain,
3903 * mono_domain_get () != mono_get_root_domain () means the calling method
3904 * is AppDomain:InvokeInDomain, so this is the same check as in
3905 * mono_method_same_domain () but without loading the metadata for the method.
3907 if (mono_domain_get () == mono_get_root_domain ()) {
3909 amodule = find_aot_module (code);
3913 mono_arch_patch_plt_entry (plt_entry, got, regs, addr);
3918 * mono_aot_plt_resolve:
3920 * This function is called by the entries in the PLT to resolve the actual method that
3921 * needs to be called. It returns a trampoline to the method and patches the PLT entry.
3922 * Returns NULL if the something cannot be loaded.
3925 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
3927 #ifdef MONO_ARCH_AOT_SUPPORTED
3928 guint8 *p, *target, *plt_entry;
3930 MonoAotModule *module = (MonoAotModule*)aot_module;
3931 gboolean res, no_ftnptr = FALSE;
3933 gboolean using_gsharedvt = FALSE;
3935 //printf ("DYN: %p %d\n", aot_module, plt_info_offset);
3937 p = &module->blob [plt_info_offset];
3939 ji.type = decode_value (p, &p);
3941 mp = mono_mempool_new_size (512);
3942 res = decode_patch (module, mp, &ji, p, &p);
3945 mono_mempool_destroy (mp);
3949 #ifdef MONO_ARCH_GSHAREDVT_SUPPORTED
3950 using_gsharedvt = TRUE;
3954 * Avoid calling resolve_patch_target in the full-aot case if possible, since
3955 * it would create a trampoline, and we don't need that.
3956 * We could do this only if the method does not need the special handling
3957 * in mono_magic_trampoline ().
3959 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) &&
3960 !mono_method_needs_static_rgctx_invoke (ji.data.method, FALSE) && !using_gsharedvt) {
3961 target = mono_jit_compile_method (ji.data.method);
3964 target = mono_resolve_patch_target (NULL, mono_domain_get (), NULL, &ji, TRUE);
3968 * The trampoline expects us to return a function descriptor on platforms which use
3969 * it, but resolve_patch_target returns a direct function pointer for some type of
3970 * patches, so have to translate between the two.
3971 * FIXME: Clean this up, but how ?
3973 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) {
3974 /* These should already have a function descriptor */
3975 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3976 /* Our function descriptors have a 0 environment, gcc created ones don't */
3977 if (ji.type != MONO_PATCH_INFO_INTERNAL_METHOD && ji.type != MONO_PATCH_INFO_JIT_ICALL_ADDR && ji.type != MONO_PATCH_INFO_ICALL_ADDR)
3978 g_assert (((gpointer*)target) [2] == 0);
3981 } else if (!no_ftnptr) {
3982 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3983 g_assert (((gpointer*)target) [2] != 0);
3985 target = mono_create_ftnptr (mono_domain_get (), target);
3988 mono_mempool_destroy (mp);
3990 /* Patch the PLT entry with target which might be the actual method not a trampoline */
3991 plt_entry = mono_aot_get_plt_entry (code);
3992 g_assert (plt_entry);
3993 mono_aot_patch_plt_entry (code, plt_entry, module->got, NULL, target);
3997 g_assert_not_reached ();
4005 * Initialize the PLT table of the AOT module. Called lazily when the first AOT
4006 * method in the module is loaded to avoid committing memory by writing to it.
4007 * LOCKING: Assumes the AMODULE lock is held.
4010 init_plt (MonoAotModule *amodule)
4015 if (amodule->plt_inited)
4018 tramp = mono_create_specific_trampoline (amodule, MONO_TRAMPOLINE_AOT_PLT, mono_get_root_domain (), NULL);
4021 * Initialize the PLT entries in the GOT to point to the default targets.
4024 tramp = mono_create_ftnptr (mono_domain_get (), tramp);
4025 for (i = 1; i < amodule->info.plt_size; ++i)
4026 /* All the default entries point to the AOT trampoline */
4027 ((gpointer*)amodule->got)[amodule->info.plt_got_offset_base + i] = tramp;
4029 amodule->plt_inited = TRUE;
4033 * mono_aot_get_plt_entry:
4035 * Return the address of the PLT entry called by the code at CODE if exists.
4038 mono_aot_get_plt_entry (guint8 *code)
4040 MonoAotModule *amodule = find_aot_module (code);
4041 guint8 *target = NULL;
4047 if (amodule->thumb_end && code < amodule->thumb_end) {
4048 return mono_arm_get_thumb_plt_entry (code);
4052 #ifdef MONO_ARCH_AOT_SUPPORTED
4053 target = mono_arch_get_call_target (code);
4055 g_assert_not_reached ();
4059 while (target != NULL) {
4060 if ((target >= (guint8*)(amodule->plt)) && (target < (guint8*)(amodule->plt_end)))
4063 // Add 4 since mono_arch_get_call_target assumes we're passing
4064 // the instruction after the actual branch instruction.
4065 target = mono_arch_get_call_target (target + 4);
4070 if ((target >= (guint8*)(amodule->plt)) && (target < (guint8*)(amodule->plt_end)))
4078 * mono_aot_get_plt_info_offset:
4080 * Return the PLT info offset belonging to the plt entry called by CODE.
4083 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
4085 guint8 *plt_entry = mono_aot_get_plt_entry (code);
4087 g_assert (plt_entry);
4089 /* The offset is embedded inside the code after the plt entry */
4090 #ifdef MONO_ARCH_AOT_SUPPORTED
4091 return mono_arch_get_plt_info_offset (plt_entry, regs, code);
4093 g_assert_not_reached ();
4099 mono_create_ftnptr_malloc (guint8 *code)
4101 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
4102 MonoPPCFunctionDescriptor *ftnptr = g_malloc0 (sizeof (MonoPPCFunctionDescriptor));
4104 ftnptr->code = code;
4115 * mono_aot_register_jit_icall:
4117 * Register a JIT icall which is called by trampolines in full-aot mode. This should
4118 * be called from mono_arch_init () during startup.
4121 mono_aot_register_jit_icall (const char *name, gpointer addr)
4123 /* No need for locking */
4124 if (!aot_jit_icall_hash)
4125 aot_jit_icall_hash = g_hash_table_new (g_str_hash, g_str_equal);
4126 g_hash_table_insert (aot_jit_icall_hash, (char*)name, addr);
4130 * load_function_full:
4132 * Load the function named NAME from the aot image.
4135 load_function_full (MonoAotModule *amodule, const char *name, MonoTrampInfo **out_tinfo)
4139 int n_patches, pindex;
4142 guint32 info_offset;
4146 symbol = g_strdup_printf ("%s", name);
4147 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&code);
4150 g_error ("Symbol '%s' not found in AOT file '%s'.\n", name, amodule->aot_name);
4152 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT FOUND function '%s' in AOT file '%s'.", name, amodule->aot_name);
4156 symbol = g_strdup_printf ("%s_p", name);
4157 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&p);
4160 /* Nothing to patch */
4163 info_offset = *(guint32*)p;
4165 MonoTrampInfo *tinfo;
4166 guint32 code_size, uw_info_len, uw_offset;
4168 /* Construct a MonoTrampInfo from the data in the AOT image */
4170 p += sizeof (guint32);
4171 code_size = *(guint32*)p;
4172 p += sizeof (guint32);
4173 uw_offset = *(guint32*)p;
4174 uw_info = amodule->unwind_info + uw_offset;
4175 uw_info_len = decode_value (uw_info, &uw_info);
4177 tinfo = g_new0 (MonoTrampInfo, 1);
4179 tinfo->code_size = code_size;
4180 tinfo->uw_info = uw_info;
4181 tinfo->uw_info_len = uw_info_len;
4186 p = amodule->blob + info_offset;
4188 /* Similar to mono_aot_load_method () */
4190 n_patches = decode_value (p, &p);
4193 MonoJumpInfo *patches;
4196 mp = mono_mempool_new ();
4198 patches = load_patch_info (amodule, mp, n_patches, &got_slots, p, &p);
4201 for (pindex = 0; pindex < n_patches; ++pindex) {
4202 MonoJumpInfo *ji = &patches [pindex];
4205 if (amodule->got [got_slots [pindex]])
4209 * When this code is executed, the runtime may not be initalized yet, so
4210 * resolve the patch info by hand.
4212 if (ji->type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
4213 if (!strcmp (ji->data.name, "mono_get_lmf_addr")) {
4214 target = mono_get_lmf_addr;
4215 } else if (!strcmp (ji->data.name, "mono_thread_force_interruption_checkpoint")) {
4216 target = mono_thread_force_interruption_checkpoint;
4217 } else if (!strcmp (ji->data.name, "mono_exception_from_token")) {
4218 target = mono_exception_from_token;
4219 } else if (!strcmp (ji->data.name, "mono_throw_exception")) {
4220 target = mono_get_throw_exception ();
4221 } else if (strstr (ji->data.name, "trampoline_func_") == ji->data.name) {
4222 int tramp_type2 = atoi (ji->data.name + strlen ("trampoline_func_"));
4223 target = (gpointer)mono_get_trampoline_func (tramp_type2);
4224 } else if (strstr (ji->data.name, "specific_trampoline_lazy_fetch_") == ji->data.name) {
4225 /* atoll is needed because the the offset is unsigned */
4229 res = sscanf (ji->data.name, "specific_trampoline_lazy_fetch_%u", &slot);
4230 g_assert (res == 1);
4231 target = mono_create_specific_trampoline (GUINT_TO_POINTER (slot), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, mono_get_root_domain (), NULL);
4232 target = mono_create_ftnptr_malloc (target);
4233 } else if (!strcmp (ji->data.name, "specific_trampoline_monitor_enter")) {
4234 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_MONITOR_ENTER, mono_get_root_domain (), NULL);
4235 target = mono_create_ftnptr_malloc (target);
4236 } else if (!strcmp (ji->data.name, "specific_trampoline_monitor_exit")) {
4237 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_MONITOR_EXIT, mono_get_root_domain (), NULL);
4238 target = mono_create_ftnptr_malloc (target);
4239 } else if (!strcmp (ji->data.name, "specific_trampoline_generic_class_init")) {
4240 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_GENERIC_CLASS_INIT, mono_get_root_domain (), NULL);
4241 target = mono_create_ftnptr_malloc (target);
4242 } else if (!strcmp (ji->data.name, "mono_thread_get_and_clear_pending_exception")) {
4243 target = mono_thread_get_and_clear_pending_exception;
4244 } else if (strstr (ji->data.name, "generic_trampoline_")) {
4245 target = mono_aot_get_trampoline (ji->data.name);
4246 } else if (aot_jit_icall_hash && g_hash_table_lookup (aot_jit_icall_hash, ji->data.name)) {
4247 /* Registered by mono_arch_init () */
4248 target = g_hash_table_lookup (aot_jit_icall_hash, ji->data.name);
4250 fprintf (stderr, "Unknown relocation '%s'\n", ji->data.name);
4251 g_assert_not_reached ();
4255 /* Hopefully the code doesn't have patches which need method or
4258 target = mono_resolve_patch_target (NULL, NULL, code, ji, FALSE);
4262 amodule->got [got_slots [pindex]] = target;
4267 mono_mempool_destroy (mp);
4274 load_function (MonoAotModule *amodule, const char *name)
4276 return load_function_full (amodule, name, NULL);
4280 * Return the trampoline identified by NAME from the mscorlib AOT file.
4281 * On ppc64, this returns a function descriptor.
4284 mono_aot_get_trampoline_full (const char *name, MonoTrampInfo **out_tinfo)
4287 MonoAotModule *amodule;
4289 image = mono_defaults.corlib;
4292 amodule = image->aot_module;
4295 return mono_create_ftnptr_malloc (load_function_full (amodule, name, out_tinfo));
4299 mono_aot_get_trampoline (const char *name)
4301 return mono_aot_get_trampoline_full (name, NULL);
4305 #include <mach/mach.h>
4307 static TrampolinePage* trampoline_pages [MONO_AOT_TRAMP_NUM];
4308 /* these sizes are for ARM code, parametrize if porting to other architectures (see arch_emit_specific_trampoline_pages)
4309 * trampoline size is assumed to be 8 bytes below as well (8 is the minimum for 32 bit archs, since we need to store
4310 * two pointers for trampoline in the data page).
4311 * the minimum for the common code must be at least sizeof(TrampolinePage), since we store the page info at the
4312 * beginning of the data page.
4314 static const int trampolines_pages_code_offsets [MONO_AOT_TRAMP_NUM] = {16, 16, 72, 16};
4316 static unsigned char*
4317 get_new_trampoline_from_page (int tramp_type)
4319 MonoAotModule *amodule;
4321 TrampolinePage *page;
4324 vm_address_t addr, taddr;
4326 vm_prot_t prot, max_prot;
4327 int psize, specific_trampoline_size;
4328 unsigned char *code;
4330 specific_trampoline_size = 2 * sizeof (gpointer);
4332 mono_aot_page_lock ();
4333 page = trampoline_pages [tramp_type];
4334 if (page && page->trampolines < page->trampolines_end) {
4335 code = page->trampolines;
4336 page->trampolines += specific_trampoline_size;
4337 mono_aot_page_unlock ();
4340 mono_aot_page_unlock ();
4341 psize = mono_pagesize ();
4342 /* the trampoline template page is in the mscorlib module */
4343 image = mono_defaults.corlib;
4346 amodule = image->aot_module;
4349 g_assert (amodule->info.tramp_page_size == psize);
4351 if (tramp_type == MONO_AOT_TRAMP_SPECIFIC)
4352 tpage = load_function (amodule, "specific_trampolines_page");
4353 else if (tramp_type == MONO_AOT_TRAMP_STATIC_RGCTX)
4354 tpage = load_function (amodule, "rgctx_trampolines_page");
4355 else if (tramp_type == MONO_AOT_TRAMP_IMT_THUNK)
4356 tpage = load_function (amodule, "imt_trampolines_page");
4357 else if (tramp_type == MONO_AOT_TRAMP_GSHAREDVT_ARG)
4358 tpage = load_function (amodule, "gsharedvt_arg_trampolines_page");
4360 g_error ("Incorrect tramp type for trampolines page");
4362 /*g_warning ("loaded trampolines page at %x", tpage);*/
4364 /* avoid the unlikely case of looping forever */
4367 while (page == NULL && count-- > 0) {
4369 /* allocate two contiguous pages of memory: the first page will contain the data (like a local constant pool)
4370 * while the second will contain the trampolines.
4372 ret = vm_allocate (mach_task_self (), &addr, psize * 2, VM_FLAGS_ANYWHERE);
4373 if (ret != KERN_SUCCESS) {
4374 g_error ("Cannot allocate memory for trampolines: %d", ret);
4377 /*g_warning ("allocated trampoline double page at %x", addr);*/
4378 /* replace the second page with a remapped trampoline page */
4379 taddr = addr + psize;
4380 vm_deallocate (mach_task_self (), taddr, psize);
4381 ret = vm_remap (mach_task_self (), &taddr, psize, 0, FALSE, mach_task_self(), (vm_address_t)tpage, FALSE, &prot, &max_prot, VM_INHERIT_SHARE);
4382 if (ret != KERN_SUCCESS) {
4383 /* someone else got the page, try again */
4384 vm_deallocate (mach_task_self (), addr, psize);
4387 /*g_warning ("remapped trampoline page at %x", taddr);*/
4389 mono_aot_page_lock ();
4390 page = trampoline_pages [tramp_type];
4391 /* some other thread already allocated, so use that to avoid wasting memory */
4392 if (page && page->trampolines < page->trampolines_end) {
4393 code = page->trampolines;
4394 page->trampolines += specific_trampoline_size;
4395 mono_aot_page_unlock ();
4396 vm_deallocate (mach_task_self (), addr, psize);
4397 vm_deallocate (mach_task_self (), taddr, psize);
4400 page = (TrampolinePage*)addr;
4401 page->next = trampoline_pages [tramp_type];
4402 trampoline_pages [tramp_type] = page;
4404 page->trampolines = (void*)(taddr + amodule->info.tramp_page_code_offsets [tramp_type]);
4406 page->trampolines = (void*)(taddr + trampolines_pages_code_offsets [tramp_type]);
4408 page->trampolines_end = (void*)(taddr + psize - 64);
4409 code = page->trampolines;
4410 page->trampolines += specific_trampoline_size;
4411 mono_aot_page_unlock ();
4414 g_error ("Cannot allocate more trampoline pages: %d", ret);
4419 static unsigned char*
4420 get_new_trampoline_from_page (int tramp_type)
4422 g_error ("Page trampolines not supported.");
4429 get_new_specific_trampoline_from_page (gpointer tramp, gpointer arg)
4434 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_SPECIFIC);
4436 data = (gpointer*)((char*)code - mono_pagesize ());
4439 /*g_warning ("new trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
4445 get_new_rgctx_trampoline_from_page (gpointer tramp, gpointer arg)
4450 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_STATIC_RGCTX);
4452 data = (gpointer*)((char*)code - mono_pagesize ());
4455 /*g_warning ("new rgctx trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
4461 get_new_imt_trampoline_from_page (gpointer arg)
4466 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_IMT_THUNK);
4468 data = (gpointer*)((char*)code - mono_pagesize ());
4470 /*g_warning ("new imt trampoline at %p for data %p, (stored at %p)", code, arg, data);*/
4476 get_new_gsharedvt_arg_trampoline_from_page (gpointer tramp, gpointer arg)
4481 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_GSHAREDVT_ARG);
4483 data = (gpointer*)((char*)code - mono_pagesize ());
4486 /*g_warning ("new rgctx trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
4490 /* Return a given kind of trampoline */
4492 get_numerous_trampoline (MonoAotTrampoline tramp_type, int n_got_slots, MonoAotModule **out_amodule, guint32 *got_offset, guint32 *out_tramp_size)
4494 MonoAotModule *amodule;
4495 int index, tramp_size;
4498 /* Currently, we keep all trampolines in the mscorlib AOT image */
4499 image = mono_defaults.corlib;
4504 amodule = image->aot_module;
4507 *out_amodule = amodule;
4510 #define MONOTOUCH_TRAMPOLINES_ERROR ". See http://docs.xamarin.com/ios/troubleshooting for instructions on how to fix this condition."
4512 #define MONOTOUCH_TRAMPOLINES_ERROR ""
4514 if (amodule->trampoline_index [tramp_type] == amodule->info.num_trampolines [tramp_type]) {
4515 g_error ("Ran out of trampolines of type %d in '%s' (%d)%s\n",
4516 tramp_type, image->name, amodule->info.num_trampolines [tramp_type], MONOTOUCH_TRAMPOLINES_ERROR);
4518 index = amodule->trampoline_index [tramp_type] ++;
4522 *got_offset = amodule->info.trampoline_got_offset_base [tramp_type] + (index * n_got_slots);
4524 tramp_size = amodule->info.trampoline_size [tramp_type];
4527 *out_tramp_size = tramp_size;
4529 return amodule->trampolines [tramp_type] + (index * tramp_size);
4533 * Return a specific trampoline from the AOT file.
4536 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
4538 MonoAotModule *amodule;
4539 guint32 got_offset, tramp_size;
4540 guint8 *code, *tramp;
4541 static gpointer generic_trampolines [MONO_TRAMPOLINE_NUM];
4542 static gboolean inited;
4543 static guint32 num_trampolines;
4549 mono_counters_register ("Specific trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &num_trampolines);
4558 if (!generic_trampolines [tramp_type]) {
4561 symbol = mono_get_generic_trampoline_name (tramp_type);
4562 generic_trampolines [tramp_type] = mono_aot_get_trampoline (symbol);
4566 tramp = generic_trampolines [tramp_type];
4569 if (USE_PAGE_TRAMPOLINES) {
4570 code = get_new_specific_trampoline_from_page (tramp, arg1);
4573 code = get_numerous_trampoline (MONO_AOT_TRAMP_SPECIFIC, 2, &amodule, &got_offset, &tramp_size);
4575 amodule->got [got_offset] = tramp;
4576 amodule->got [got_offset + 1] = arg1;
4580 *code_len = tramp_size;
4586 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
4588 MonoAotModule *amodule;
4592 if (USE_PAGE_TRAMPOLINES) {
4593 code = get_new_rgctx_trampoline_from_page (addr, ctx);
4595 code = get_numerous_trampoline (MONO_AOT_TRAMP_STATIC_RGCTX, 2, &amodule, &got_offset, NULL);
4597 amodule->got [got_offset] = ctx;
4598 amodule->got [got_offset + 1] = addr;
4601 /* The caller expects an ftnptr */
4602 return mono_create_ftnptr (mono_domain_get (), code);
4606 mono_aot_get_unbox_trampoline (MonoMethod *method)
4608 guint32 method_index = mono_metadata_token_index (method->token) - 1;
4609 MonoAotModule *amodule;
4611 guint32 *ut, *ut_end, *entry;
4612 int low, high, entry_index;
4614 if (method->is_inflated && !mono_method_is_generic_sharable_full (method, FALSE, FALSE, FALSE)) {
4615 method_index = find_extra_method (method, &amodule);
4616 if (method_index == 0xffffff && mono_method_is_generic_sharable_full (method, FALSE, FALSE, TRUE)) {
4617 MonoMethod *shared = mini_get_shared_method_full (method, TRUE, TRUE);
4618 method_index = find_extra_method (shared, &amodule);
4620 g_assert (method_index != 0xffffff);
4622 amodule = method->klass->image->aot_module;
4626 ut = amodule->unbox_trampolines;
4627 ut_end = amodule->unbox_trampolines_end;
4629 /* Do a binary search in the sorted table */
4632 high = (ut_end - ut) / 2;
4633 while (low < high) {
4634 entry_index = (low + high) / 2;
4635 entry = &ut [(entry_index * 2)];
4636 if (entry [0] < method_index) {
4637 low = entry_index + 1;
4638 } else if (entry [0] > method_index) {
4641 if (amodule->info.flags & MONO_AOT_FILE_FLAG_DIRECT_METHOD_ADDRESSES)
4642 code = get_arm_bl_target (entry + 1);
4644 code = amodule->code + entry [1];
4650 /* The caller expects an ftnptr */
4651 return mono_create_ftnptr (mono_domain_get (), code);
4655 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
4659 MonoAotModule *amodule = mono_defaults.corlib->aot_module;
4660 guint32 index = MONO_RGCTX_SLOT_INDEX (slot);
4661 static int count = 0;
4664 if (index >= amodule->info.num_rgctx_fetch_trampolines) {
4665 static gpointer addr;
4669 * Use the general version of the rgctx fetch trampoline. It receives a pair of <slot, trampoline> in the rgctx arg reg.
4672 addr = load_function (amodule, "rgctx_fetch_trampoline_general");
4673 info = mono_domain_alloc0 (mono_get_root_domain (), sizeof (gpointer) * 2);
4674 info [0] = GUINT_TO_POINTER (slot);
4675 info [1] = mono_create_specific_trampoline (GUINT_TO_POINTER (slot), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, mono_get_root_domain (), NULL);
4676 code = mono_aot_get_static_rgctx_trampoline (info, addr);
4677 return mono_create_ftnptr (mono_domain_get (), code);
4680 symbol = mono_get_rgctx_fetch_trampoline_name (slot);
4681 code = load_function (mono_defaults.corlib->aot_module, symbol);
4683 /* The caller expects an ftnptr */
4684 return mono_create_ftnptr (mono_domain_get (), code);
4688 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
4693 int i, index, real_count;
4694 MonoAotModule *amodule;
4697 for (i = 0; i < count; ++i) {
4698 MonoIMTCheckItem *item = imt_entries [i];
4700 if (item->is_equals)
4704 /* Save the entries into an array */
4705 buf = mono_domain_alloc (domain, (real_count + 1) * 2 * sizeof (gpointer));
4707 for (i = 0; i < count; ++i) {
4708 MonoIMTCheckItem *item = imt_entries [i];
4710 if (!item->is_equals)
4713 g_assert (item->key);
4715 buf [(index * 2)] = item->key;
4716 if (item->has_target_code) {
4717 gpointer *p = mono_domain_alloc (domain, sizeof (gpointer));
4718 *p = item->value.target_code;
4719 buf [(index * 2) + 1] = p;
4721 buf [(index * 2) + 1] = &(vtable->vtable [item->value.vtable_slot]);
4725 buf [(index * 2)] = NULL;
4726 buf [(index * 2) + 1] = fail_tramp;
4728 if (USE_PAGE_TRAMPOLINES) {
4729 code = get_new_imt_trampoline_from_page (buf);
4731 code = get_numerous_trampoline (MONO_AOT_TRAMP_IMT_THUNK, 1, &amodule, &got_offset, NULL);
4733 amodule->got [got_offset] = buf;
4740 mono_aot_get_gsharedvt_arg_trampoline (gpointer arg, gpointer addr)
4742 MonoAotModule *amodule;
4746 if (USE_PAGE_TRAMPOLINES) {
4747 code = get_new_gsharedvt_arg_trampoline_from_page (addr, arg);
4749 code = get_numerous_trampoline (MONO_AOT_TRAMP_GSHAREDVT_ARG, 2, &amodule, &got_offset, NULL);
4751 amodule->got [got_offset] = arg;
4752 amodule->got [got_offset + 1] = addr;
4755 /* The caller expects an ftnptr */
4756 return mono_create_ftnptr (mono_domain_get (), code);
4760 * mono_aot_set_make_unreadable:
4762 * Set whenever to make all mmaped memory unreadable. In conjuction with a
4763 * SIGSEGV handler, this is useful to find out which pages the runtime tries to read.
4766 mono_aot_set_make_unreadable (gboolean unreadable)
4770 make_unreadable = unreadable;
4772 if (make_unreadable && !inited) {
4773 mono_counters_register ("AOT pagefaults", MONO_COUNTER_JIT | MONO_COUNTER_INT, &n_pagefaults);
4778 MonoAotModule *module;
4783 find_map (gpointer key, gpointer value, gpointer user_data)
4785 MonoAotModule *module = (MonoAotModule*)value;
4786 FindMapUserData *data = (FindMapUserData*)user_data;
4789 if ((data->ptr >= module->mem_begin) && (data->ptr < module->mem_end))
4790 data->module = module;
4793 static MonoAotModule*
4794 find_module_for_addr (void *ptr)
4796 FindMapUserData data;
4798 if (!make_unreadable)
4802 data.ptr = (guint8*)ptr;
4805 g_hash_table_foreach (aot_modules, (GHFunc)find_map, &data);
4812 * mono_aot_is_pagefault:
4814 * Should be called from a SIGSEGV signal handler to find out whenever @ptr is
4815 * within memory allocated by this module.
4818 mono_aot_is_pagefault (void *ptr)
4820 if (!make_unreadable)
4824 * Not signal safe, but SIGSEGV's are synchronous, and
4825 * this is only turned on by a MONO_DEBUG option.
4827 return find_module_for_addr (ptr) != NULL;
4831 * mono_aot_handle_pagefault:
4833 * Handle a pagefault caused by an unreadable page by making it readable again.
4836 mono_aot_handle_pagefault (void *ptr)
4838 #ifndef PLATFORM_WIN32
4839 guint8* start = (guint8*)ROUND_DOWN (((gssize)ptr), mono_pagesize ());
4843 res = mono_mprotect (start, mono_pagesize (), MONO_MMAP_READ|MONO_MMAP_WRITE|MONO_MMAP_EXEC);
4844 g_assert (res == 0);
4855 mono_aot_init (void)
4860 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
4866 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
4872 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
4878 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
4884 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
4890 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
4896 mono_aot_get_plt_entry (guint8 *code)
4902 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
4908 mono_aot_patch_plt_entry (guint8 *code, guint8 *plt_entry, gpointer *got, mgreg_t *regs, guint8 *addr)
4913 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
4919 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
4921 g_assert_not_reached ();
4927 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
4929 g_assert_not_reached ();
4934 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
4936 g_assert_not_reached ();
4941 mono_aot_get_trampoline (const char *name)
4943 g_assert_not_reached ();
4948 mono_aot_get_unbox_trampoline (MonoMethod *method)
4950 g_assert_not_reached ();
4955 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
4957 g_assert_not_reached ();
4962 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
4964 g_assert_not_reached ();
4969 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
4971 g_assert_not_reached ();
4976 mono_aot_register_jit_icall (const char *name, gpointer addr)