2 * aot-runtime.c: mono Ahead of Time compiler
5 * Dietmar Maurer (dietmar@ximian.com)
6 * Zoltan Varga (vargaz@gmail.com)
8 * (C) 2002 Ximian, Inc.
9 * Copyright 2003-2011 Novell, Inc.
10 * Copyright 2011 Xamarin, Inc.
14 #include <sys/types.h>
20 #ifdef HAVE_SYS_MMAN_H
29 #ifdef HAVE_EXECINFO_H
36 #ifdef HAVE_SYS_WAIT_H
37 #include <sys/wait.h> /* for WIFEXITED, WEXITSTATUS */
40 #include <mono/metadata/tabledefs.h>
41 #include <mono/metadata/class.h>
42 #include <mono/metadata/object.h>
43 #include <mono/metadata/tokentype.h>
44 #include <mono/metadata/appdomain.h>
45 #include <mono/metadata/debug-helpers.h>
46 #include <mono/metadata/assembly.h>
47 #include <mono/metadata/metadata-internals.h>
48 #include <mono/metadata/marshal.h>
49 #include <mono/metadata/gc-internal.h>
50 #include <mono/metadata/monitor.h>
51 #include <mono/metadata/threads-types.h>
52 #include <mono/metadata/mono-endian.h>
53 #include <mono/utils/mono-logger-internal.h>
54 #include <mono/utils/mono-mmap.h>
55 #include "mono/utils/mono-compiler.h"
56 #include <mono/utils/mono-counters.h>
64 #define SHARED_EXT ".dll"
65 #elif ((defined(__ppc__) || defined(__powerpc__) || defined(__ppc64__)) || defined(__MACH__)) && !defined(__linux__)
66 #define SHARED_EXT ".dylib"
67 #elif defined(__APPLE__) && defined(TARGET_X86) && !defined(__native_client_codegen__)
68 #define SHARED_EXT ".dylib"
70 #define SHARED_EXT ".so"
73 #define ALIGN_PTR_TO(ptr,align) (gpointer)((((gssize)(ptr)) + (align - 1)) & (~(align - 1)))
74 #define ROUND_DOWN(VALUE,SIZE) ((VALUE) & ~((SIZE) - 1))
76 typedef struct MonoAotModule {
78 /* Pointer to the Global Offset Table */
80 GHashTable *name_cache;
81 GHashTable *extra_methods;
82 /* Maps methods to their code */
83 GHashTable *method_to_code;
84 /* Maps pointers into the method info to the methods themselves */
85 GHashTable *method_ref_to_method;
86 MonoAssemblyName *image_names;
88 MonoAssembly *assembly;
89 MonoImage **image_table;
90 guint32 image_table_len;
100 gint32 *code_offsets;
102 gpointer *method_addresses;
104 /* This contains <offset, index> pairs sorted by offset */
105 /* This is needed because LLVM emitted methods can be in any order */
106 gint32 *sorted_code_offsets;
107 gint32 sorted_code_offsets_len;
108 guint32 *method_info_offsets;
109 guint32 *got_info_offsets;
110 guint32 *ex_info_offsets;
111 guint32 *class_info_offsets;
112 guint32 *methods_loaded;
113 guint16 *class_name_table;
114 guint32 *extra_method_table;
115 guint32 *extra_method_info_offsets;
116 guint32 *unbox_trampolines;
117 guint32 *unbox_trampolines_end;
121 /* Points to the mono EH data created by LLVM */
122 guint8 *mono_eh_frame;
124 /* Points to the trampolines */
125 guint8 *trampolines [MONO_AOT_TRAMP_NUM];
126 /* The first unused trampoline of each kind */
127 guint32 trampoline_index [MONO_AOT_TRAMP_NUM];
129 gboolean use_page_trampolines;
131 MonoAotFileInfo info;
139 unsigned char *trampolines;
140 unsigned char *trampolines_end;
143 static GHashTable *aot_modules;
144 #define mono_aot_lock() EnterCriticalSection (&aot_mutex)
145 #define mono_aot_unlock() LeaveCriticalSection (&aot_mutex)
146 static CRITICAL_SECTION aot_mutex;
149 * Maps assembly names to the mono_aot_module_<NAME>_info symbols in the
150 * AOT modules registered by mono_aot_register_module ().
152 static GHashTable *static_aot_modules;
155 * Maps MonoJitInfo* to the aot module they belong to, this can be different
156 * from ji->method->klass->image's aot module for generic instances.
158 static GHashTable *ji_to_amodule;
161 * Whenever to AOT compile loaded assemblies on demand and store them in
162 * a cache under $HOME/.mono/aot-cache.
164 static gboolean use_aot_cache = FALSE;
167 * Whenever to spawn a new process to AOT a file or do it in-process. Only relevant if
168 * use_aot_cache is TRUE.
170 static gboolean spawn_compiler = TRUE;
173 static gint32 mono_last_aot_method = -1;
175 static gboolean make_unreadable = FALSE;
176 static guint32 name_table_accesses = 0;
177 static guint32 n_pagefaults = 0;
179 /* Used to speed-up find_aot_module () */
180 static gsize aot_code_low_addr = (gssize)-1;
181 static gsize aot_code_high_addr = 0;
183 static GHashTable *aot_jit_icall_hash;
186 #define USE_PAGE_TRAMPOLINES ((MonoAotModule*)mono_defaults.corlib->aot_module)->use_page_trampolines
188 #define USE_PAGE_TRAMPOLINES 0
191 #define mono_aot_page_lock() EnterCriticalSection (&aot_page_mutex)
192 #define mono_aot_page_unlock() LeaveCriticalSection (&aot_page_mutex)
193 static CRITICAL_SECTION aot_page_mutex;
196 init_plt (MonoAotModule *info);
198 /*****************************************************/
200 /*****************************************************/
205 * Load one of the images referenced by AMODULE. Returns NULL if the image is not
206 * found, and sets the loader error if SET_ERROR is TRUE.
209 load_image (MonoAotModule *amodule, int index, gboolean set_error)
211 MonoAssembly *assembly;
212 MonoImageOpenStatus status;
214 g_assert (index < amodule->image_table_len);
216 if (amodule->image_table [index])
217 return amodule->image_table [index];
218 if (amodule->out_of_date)
221 assembly = mono_assembly_load (&amodule->image_names [index], amodule->assembly->basedir, &status);
223 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is unusable because dependency %s is not found.\n", amodule->aot_name, amodule->image_names [index].name);
224 amodule->out_of_date = TRUE;
227 char *full_name = mono_stringify_assembly_name (&amodule->image_names [index]);
228 mono_loader_set_error_assembly_load (full_name, FALSE);
234 if (strcmp (assembly->image->guid, amodule->image_guids [index])) {
235 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is unusable (GUID of dependent assembly %s doesn't match (expected '%s', got '%s').\n", amodule->aot_name, amodule->image_names [index].name, amodule->image_guids [index], assembly->image->guid);
236 amodule->out_of_date = TRUE;
240 amodule->image_table [index] = assembly->image;
241 return assembly->image;
245 decode_value (guint8 *ptr, guint8 **rptr)
250 if ((b & 0x80) == 0){
253 } else if ((b & 0x40) == 0){
254 len = ((b & 0x3f) << 8 | ptr [1]);
256 } else if (b != 0xff) {
257 len = ((b & 0x1f) << 24) |
264 len = (ptr [1] << 24) | (ptr [2] << 16) | (ptr [3] << 8) | ptr [4];
270 //printf ("DECODE: %d.\n", len);
275 * mono_aot_get_offset:
277 * Decode an offset table emitted by emit_offset_table (), returning the INDEXth
281 mono_aot_get_offset (guint32 *table, int index)
283 int i, group, ngroups, index_entry_size;
284 int start_offset, offset, noffsets, group_size;
285 guint8 *data_start, *p;
286 guint32 *index32 = NULL;
287 guint16 *index16 = NULL;
289 noffsets = table [0];
290 group_size = table [1];
292 index_entry_size = table [3];
293 group = index / group_size;
295 if (index_entry_size == 2) {
296 index16 = (guint16*)&table [4];
297 data_start = (guint8*)&index16 [ngroups];
298 p = data_start + index16 [group];
300 index32 = (guint32*)&table [4];
301 data_start = (guint8*)&index32 [ngroups];
302 p = data_start + index32 [group];
305 /* offset will contain the value of offsets [group * group_size] */
306 offset = start_offset = decode_value (p, &p);
307 for (i = group * group_size + 1; i <= index; ++i) {
308 offset += decode_value (p, &p);
311 //printf ("Offset lookup: %d -> %d, start=%d, p=%d\n", index, offset, start_offset, table [3 + group]);
317 decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf);
320 decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf);
323 decode_type (MonoAotModule *module, guint8 *buf, guint8 **endbuf);
325 static MonoGenericInst*
326 decode_generic_inst (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
329 MonoType **type_argv;
330 MonoGenericInst *inst;
333 type_argc = decode_value (p, &p);
334 type_argv = g_new0 (MonoType*, type_argc);
336 for (i = 0; i < type_argc; ++i) {
337 MonoClass *pclass = decode_klass_ref (module, p, &p);
342 type_argv [i] = &pclass->byval_arg;
345 inst = mono_metadata_get_generic_inst (type_argc, type_argv);
354 decode_generic_context (MonoAotModule *module, MonoGenericContext *ctx, guint8 *buf, guint8 **endbuf)
361 argc = decode_value (p, &p);
364 ctx->class_inst = decode_generic_inst (module, p, &p);
365 if (!ctx->class_inst)
369 argc = decode_value (p, &p);
372 ctx->method_inst = decode_generic_inst (module, p, &p);
373 if (!ctx->method_inst)
382 decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
385 MonoClass *klass = NULL, *eklass;
386 guint32 token, rank, idx;
390 reftype = decode_value (p, &p);
397 case MONO_AOT_TYPEREF_TYPEDEF_INDEX:
398 idx = decode_value (p, &p);
399 image = load_image (module, 0, TRUE);
402 klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF + idx);
404 case MONO_AOT_TYPEREF_TYPEDEF_INDEX_IMAGE:
405 idx = decode_value (p, &p);
406 image = load_image (module, decode_value (p, &p), TRUE);
409 klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF + idx);
411 case MONO_AOT_TYPEREF_TYPESPEC_TOKEN:
412 token = decode_value (p, &p);
413 image = module->assembly->image;
416 klass = mono_class_get (image, token);
418 case MONO_AOT_TYPEREF_GINST: {
420 MonoGenericContext ctx;
423 gclass = decode_klass_ref (module, p, &p);
426 g_assert (gclass->generic_container);
428 memset (&ctx, 0, sizeof (ctx));
429 ctx.class_inst = decode_generic_inst (module, p, &p);
432 type = mono_class_inflate_generic_type (&gclass->byval_arg, &ctx);
433 klass = mono_class_from_mono_type (type);
434 mono_metadata_free_type (type);
437 case MONO_AOT_TYPEREF_VAR: {
439 MonoGenericContainer *container = NULL;
440 int type = decode_value (p, &p);
441 int num = decode_value (p, &p);
442 gboolean has_container = decode_value (p, &p);
446 gboolean is_method = decode_value (p, &p);
449 MonoMethod *method_def;
450 g_assert (type == MONO_TYPE_MVAR);
451 method_def = decode_resolve_method_ref (module, p, &p);
455 container = mono_method_get_generic_container (method_def);
457 MonoClass *class_def;
458 g_assert (type == MONO_TYPE_VAR);
459 class_def = decode_klass_ref (module, p, &p);
463 container = class_def->generic_container;
466 serial = decode_value (p, &p);
469 // FIXME: Memory management
470 t = g_new0 (MonoType, 1);
473 t->data.generic_param = mono_generic_container_get_param (container, num);
474 g_assert (serial == 0);
477 MonoGenericParam *par = (MonoGenericParam*)g_new0 (MonoGenericParamFull, 1);
479 par->serial = serial;
481 par->image = mono_defaults.corlib;
482 t->data.generic_param = par;
485 // FIXME: Maybe use types directly to avoid
486 // the overhead of creating MonoClass-es
487 klass = mono_class_from_mono_type (t);
492 case MONO_AOT_TYPEREF_ARRAY:
494 rank = decode_value (p, &p);
495 eklass = decode_klass_ref (module, p, &p);
496 klass = mono_array_class_get (eklass, rank);
498 case MONO_AOT_TYPEREF_PTR: {
501 t = decode_type (module, p, &p);
504 klass = mono_class_from_mono_type (t);
508 case MONO_AOT_TYPEREF_BLOB_INDEX: {
509 guint32 offset = decode_value (p, &p);
512 p2 = module->blob + offset;
513 klass = decode_klass_ref (module, p2, &p2);
517 g_assert_not_reached ();
520 //printf ("BLA: %s\n", mono_type_full_name (&klass->byval_arg));
525 static MonoClassField*
526 decode_field_info (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
528 MonoClass *klass = decode_klass_ref (module, buf, &buf);
535 token = MONO_TOKEN_FIELD_DEF + decode_value (p, &p);
539 return mono_class_get_field (klass, token);
543 * Parse a MonoType encoded by encode_type () in aot-compiler.c. Return malloc-ed
547 decode_type (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
552 t = g_malloc0 (sizeof (MonoType));
555 if (*p == MONO_TYPE_PINNED) {
558 } else if (*p == MONO_TYPE_BYREF) {
571 case MONO_TYPE_BOOLEAN:
585 case MONO_TYPE_STRING:
586 case MONO_TYPE_OBJECT:
587 case MONO_TYPE_TYPEDBYREF:
589 case MONO_TYPE_VALUETYPE:
590 case MONO_TYPE_CLASS:
591 t->data.klass = decode_klass_ref (module, p, &p);
593 case MONO_TYPE_SZARRAY:
594 t->data.klass = decode_klass_ref (module, p, &p);
600 t->data.type = decode_type (module, p, &p);
602 case MONO_TYPE_GENERICINST: {
604 MonoGenericContext ctx;
608 gclass = decode_klass_ref (module, p, &p);
611 g_assert (gclass->generic_container);
613 memset (&ctx, 0, sizeof (ctx));
614 ctx.class_inst = decode_generic_inst (module, p, &p);
617 type = mono_class_inflate_generic_type (&gclass->byval_arg, &ctx);
618 klass = mono_class_from_mono_type (type);
619 t->data.generic_class = klass->generic_class;
622 case MONO_TYPE_ARRAY: {
623 MonoArrayType *array;
626 // FIXME: memory management
627 array = g_new0 (MonoArrayType, 1);
628 array->eklass = decode_klass_ref (module, p, &p);
631 array->rank = decode_value (p, &p);
632 array->numsizes = decode_value (p, &p);
635 array->sizes = g_malloc0 (sizeof (int) * array->numsizes);
636 for (i = 0; i < array->numsizes; ++i)
637 array->sizes [i] = decode_value (p, &p);
639 array->numlobounds = decode_value (p, &p);
640 if (array->numlobounds)
641 array->lobounds = g_malloc0 (sizeof (int) * array->numlobounds);
642 for (i = 0; i < array->numlobounds; ++i)
643 array->lobounds [i] = decode_value (p, &p);
644 t->data.array = array;
648 case MONO_TYPE_MVAR: {
649 MonoClass *klass = decode_klass_ref (module, p, &p);
652 t->data.generic_param = klass->byval_arg.data.generic_param;
656 g_assert_not_reached ();
664 // FIXME: Error handling, memory management
666 static MonoMethodSignature*
667 decode_signature_with_target (MonoAotModule *module, MonoMethodSignature *target, guint8 *buf, guint8 **endbuf)
669 MonoMethodSignature *sig;
671 int i, param_count, call_conv, gen_param_count = 0;
673 gboolean hasthis, explicit_this, has_gen_params;
677 has_gen_params = (flags & 0x10) != 0;
678 hasthis = (flags & 0x20) != 0;
679 explicit_this = (flags & 0x40) != 0;
680 call_conv = flags & 0x0F;
683 gen_param_count = decode_value (p, &p);
684 param_count = decode_value (p, &p);
685 if (target && param_count != target->param_count)
687 sig = g_malloc0 (MONO_SIZEOF_METHOD_SIGNATURE + param_count * sizeof (MonoType *));
688 sig->param_count = param_count;
689 sig->sentinelpos = -1;
690 sig->hasthis = hasthis;
691 sig->explicit_this = explicit_this;
692 sig->call_convention = call_conv;
693 sig->param_count = param_count;
694 sig->ret = decode_type (module, p, &p);
695 for (i = 0; i < param_count; ++i) {
696 if (*p == MONO_TYPE_SENTINEL) {
697 g_assert (sig->call_convention == MONO_CALL_VARARG);
698 sig->sentinelpos = i;
701 sig->params [i] = decode_type (module, p, &p);
704 if (sig->call_convention == MONO_CALL_VARARG && sig->sentinelpos == -1)
705 sig->sentinelpos = sig->param_count;
712 static MonoMethodSignature*
713 decode_signature (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
715 return decode_signature_with_target (module, NULL, buf, endbuf);
719 sig_matches_target (MonoAotModule *module, MonoMethod *target, guint8 *buf, guint8 **endbuf)
721 MonoMethodSignature *sig;
725 sig = decode_signature_with_target (module, mono_method_signature (target), p, &p);
726 res = sig && mono_metadata_signature_equal (mono_method_signature (target), sig);
732 /* Stores information returned by decode_method_ref () */
737 gboolean no_aot_trampoline;
741 * decode_method_ref_with_target:
743 * Decode a method reference, storing the image/token into a MethodRef structure.
744 * This avoids loading metadata for the method if the caller does not need it. If the method has
745 * no token, then it is loaded from metadata and ref->method is set to the method instance.
746 * If TARGET is non-NULL, abort decoding if it can be determined that the decoded method
747 * couldn't resolve to TARGET, and return FALSE.
748 * There are some kinds of method references which only support a non-null TARGET.
749 * This means that its not possible to decode this into a method, only to check
750 * that the method reference matches a given method. This is normally not a problem
751 * as these wrappers only occur in the extra_methods table, where we already have
752 * a method we want to lookup.
755 decode_method_ref_with_target (MonoAotModule *module, MethodRef *ref, MonoMethod *target, guint8 *buf, guint8 **endbuf)
757 guint32 image_index, value;
758 MonoImage *image = NULL;
761 memset (ref, 0, sizeof (MethodRef));
763 value = decode_value (p, &p);
764 image_index = value >> 24;
766 if (image_index == MONO_AOT_METHODREF_NO_AOT_TRAMPOLINE) {
767 ref->no_aot_trampoline = TRUE;
768 value = decode_value (p, &p);
769 image_index = value >> 24;
772 if (image_index < MONO_AOT_METHODREF_MIN || image_index == MONO_AOT_METHODREF_METHODSPEC || image_index == MONO_AOT_METHODREF_GINST) {
773 if (target && target->wrapper_type)
777 if (image_index == MONO_AOT_METHODREF_WRAPPER) {
778 guint32 wrapper_type;
780 wrapper_type = decode_value (p, &p);
782 if (target && target->wrapper_type != wrapper_type)
786 image = mono_defaults.corlib;
788 switch (wrapper_type) {
789 #ifndef DISABLE_REMOTING
790 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK: {
791 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
795 mono_class_init (m->klass);
796 ref->method = mono_marshal_get_remoting_invoke_with_check (m);
799 case MONO_WRAPPER_PROXY_ISINST: {
800 MonoClass *klass = decode_klass_ref (module, p, &p);
803 ref->method = mono_marshal_get_proxy_cancast (klass);
806 case MONO_WRAPPER_LDFLD:
807 case MONO_WRAPPER_LDFLDA:
808 case MONO_WRAPPER_STFLD:
809 case MONO_WRAPPER_ISINST: {
810 MonoClass *klass = decode_klass_ref (module, p, &p);
813 if (wrapper_type == MONO_WRAPPER_LDFLD)
814 ref->method = mono_marshal_get_ldfld_wrapper (&klass->byval_arg);
815 else if (wrapper_type == MONO_WRAPPER_LDFLDA)
816 ref->method = mono_marshal_get_ldflda_wrapper (&klass->byval_arg);
817 else if (wrapper_type == MONO_WRAPPER_STFLD)
818 ref->method = mono_marshal_get_stfld_wrapper (&klass->byval_arg);
819 else if (wrapper_type == MONO_WRAPPER_ISINST)
820 ref->method = mono_marshal_get_isinst (klass);
822 g_assert_not_reached ();
825 case MONO_WRAPPER_LDFLD_REMOTE:
826 ref->method = mono_marshal_get_ldfld_remote_wrapper (NULL);
828 case MONO_WRAPPER_STFLD_REMOTE:
829 ref->method = mono_marshal_get_stfld_remote_wrapper (NULL);
832 case MONO_WRAPPER_ALLOC: {
833 int atype = decode_value (p, &p);
835 ref->method = mono_gc_get_managed_allocator_by_type (atype);
836 g_assert (ref->method);
839 case MONO_WRAPPER_WRITE_BARRIER:
840 ref->method = mono_gc_get_write_barrier ();
842 case MONO_WRAPPER_STELEMREF: {
843 int subtype = decode_value (p, &p);
845 if (subtype == WRAPPER_SUBTYPE_NONE) {
846 ref->method = mono_marshal_get_stelemref ();
847 } else if (subtype == WRAPPER_SUBTYPE_VIRTUAL_STELEMREF) {
851 kind = decode_value (p, &p);
853 /* Can't decode this */
856 if (target->wrapper_type == MONO_WRAPPER_STELEMREF) {
857 info = mono_marshal_get_wrapper_info (target);
860 if (info->subtype == subtype && info->d.virtual_stelemref.kind == kind)
861 ref->method = target;
868 g_assert_not_reached ();
872 case MONO_WRAPPER_SYNCHRONIZED: {
873 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
877 ref->method = mono_marshal_get_synchronized_wrapper (m);
880 case MONO_WRAPPER_UNKNOWN: {
881 MonoMethodDesc *desc;
882 MonoMethod *orig_method;
883 int subtype = decode_value (p, &p);
885 if (subtype == WRAPPER_SUBTYPE_PTR_TO_STRUCTURE || subtype == WRAPPER_SUBTYPE_STRUCTURE_TO_PTR) {
886 MonoClass *klass = decode_klass_ref (module, p, &p);
893 if (klass != target->klass)
896 if (subtype == WRAPPER_SUBTYPE_PTR_TO_STRUCTURE) {
897 if (strcmp (target->name, "PtrToStructure"))
899 ref->method = mono_marshal_get_ptr_to_struct (klass);
901 if (strcmp (target->name, "StructureToPtr"))
903 ref->method = mono_marshal_get_struct_to_ptr (klass);
905 } else if (subtype == WRAPPER_SUBTYPE_SYNCHRONIZED_INNER) {
906 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
910 ref->method = mono_marshal_get_synchronized_inner_wrapper (m);
911 } else if (subtype == WRAPPER_SUBTYPE_GSHAREDVT_IN) {
912 ref->method = mono_marshal_get_gsharedvt_in_wrapper ();
913 } else if (subtype == WRAPPER_SUBTYPE_GSHAREDVT_OUT) {
914 ref->method = mono_marshal_get_gsharedvt_out_wrapper ();
916 if (subtype == WRAPPER_SUBTYPE_FAST_MONITOR_ENTER)
917 desc = mono_method_desc_new ("Monitor:Enter", FALSE);
918 else if (subtype == WRAPPER_SUBTYPE_FAST_MONITOR_EXIT)
919 desc = mono_method_desc_new ("Monitor:Exit", FALSE);
920 else if (subtype == WRAPPER_SUBTYPE_FAST_MONITOR_ENTER_V4)
921 desc = mono_method_desc_new ("Monitor:Enter(object,bool&)", FALSE);
923 g_assert_not_reached ();
924 orig_method = mono_method_desc_search_in_class (desc, mono_defaults.monitor_class);
925 g_assert (orig_method);
926 mono_method_desc_free (desc);
927 ref->method = mono_monitor_get_fast_path (orig_method);
931 case MONO_WRAPPER_MANAGED_TO_MANAGED: {
932 int subtype = decode_value (p, &p);
934 if (subtype == WRAPPER_SUBTYPE_ELEMENT_ADDR) {
935 int rank = decode_value (p, &p);
936 int elem_size = decode_value (p, &p);
938 ref->method = mono_marshal_get_array_address (rank, elem_size);
939 } else if (subtype == WRAPPER_SUBTYPE_STRING_CTOR) {
943 m = decode_resolve_method_ref (module, p, &p);
949 g_assert (target->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED);
951 info = mono_marshal_get_wrapper_info (target);
952 if (info && info->subtype == subtype && info->d.string_ctor.method == m)
953 ref->method = target;
959 case MONO_WRAPPER_MANAGED_TO_NATIVE: {
961 int subtype = decode_value (p, &p);
964 if (subtype == WRAPPER_SUBTYPE_ICALL_WRAPPER) {
969 if (strcmp (target->name, name) != 0)
971 ref->method = target;
973 m = decode_resolve_method_ref (module, p, &p);
978 /* This should only happen when looking for an extra method */
981 if (mono_marshal_method_from_wrapper (target) == m)
982 ref->method = target;
988 case MONO_WRAPPER_CASTCLASS: {
989 int subtype = decode_value (p, &p);
991 if (subtype == WRAPPER_SUBTYPE_CASTCLASS_WITH_CACHE)
992 ref->method = mono_marshal_get_castclass_with_cache ();
993 else if (subtype == WRAPPER_SUBTYPE_ISINST_WITH_CACHE)
994 ref->method = mono_marshal_get_isinst_with_cache ();
996 g_assert_not_reached ();
999 case MONO_WRAPPER_RUNTIME_INVOKE: {
1000 int subtype = decode_value (p, &p);
1005 if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_DYNAMIC) {
1006 if (strcmp (target->name, "runtime_invoke_dynamic") != 0)
1008 ref->method = target;
1009 } else if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_DIRECT) {
1010 /* Direct wrapper */
1011 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
1015 ref->method = mono_marshal_get_runtime_invoke (m, FALSE);
1016 } else if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_VIRTUAL) {
1017 /* Virtual direct wrapper */
1018 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
1022 ref->method = mono_marshal_get_runtime_invoke (m, TRUE);
1024 MonoMethodSignature *sig;
1027 sig = decode_signature_with_target (module, NULL, p, &p);
1028 info = mono_marshal_get_wrapper_info (target);
1031 if (info->subtype != subtype)
1033 g_assert (info->d.runtime_invoke.sig);
1034 if (mono_metadata_signature_equal (sig, info->d.runtime_invoke.sig))
1035 ref->method = target;
1041 case MONO_WRAPPER_DELEGATE_INVOKE:
1042 case MONO_WRAPPER_DELEGATE_BEGIN_INVOKE:
1043 case MONO_WRAPPER_DELEGATE_END_INVOKE: {
1044 gboolean is_inflated = decode_value (p, &p);
1048 MonoMethod *invoke, *wrapper;
1050 klass = decode_klass_ref (module, p, &p);
1054 switch (wrapper_type) {
1055 case MONO_WRAPPER_DELEGATE_INVOKE:
1056 invoke = mono_get_delegate_invoke (klass);
1057 wrapper = mono_marshal_get_delegate_invoke (invoke, NULL);
1059 case MONO_WRAPPER_DELEGATE_BEGIN_INVOKE:
1060 invoke = mono_get_delegate_begin_invoke (klass);
1061 wrapper = mono_marshal_get_delegate_begin_invoke (invoke);
1063 case MONO_WRAPPER_DELEGATE_END_INVOKE:
1064 invoke = mono_get_delegate_end_invoke (klass);
1065 wrapper = mono_marshal_get_delegate_end_invoke (invoke);
1068 g_assert_not_reached ();
1071 if (target && wrapper != target)
1073 ref->method = wrapper;
1076 * These wrappers are associated with a signature, not with a method.
1077 * Since we can't decode them into methods, they need a target method.
1082 if (sig_matches_target (module, target, p, &p))
1083 ref->method = target;
1089 case MONO_WRAPPER_NATIVE_TO_MANAGED: {
1093 m = decode_resolve_method_ref (module, p, &p);
1096 klass = decode_klass_ref (module, p, &p);
1099 ref->method = mono_marshal_get_managed_wrapper (m, klass, 0);
1103 g_assert_not_reached ();
1105 } else if (image_index == MONO_AOT_METHODREF_METHODSPEC) {
1106 image_index = decode_value (p, &p);
1107 ref->token = decode_value (p, &p);
1109 image = load_image (module, image_index, TRUE);
1112 } else if (image_index == MONO_AOT_METHODREF_GINST) {
1114 MonoGenericContext ctx;
1117 * These methods do not have a token which resolves them, so we
1118 * resolve them immediately.
1120 klass = decode_klass_ref (module, p, &p);
1124 if (target && target->klass != klass)
1127 image_index = decode_value (p, &p);
1128 ref->token = decode_value (p, &p);
1130 image = load_image (module, image_index, TRUE);
1134 ref->method = mono_get_method_full (image, ref->token, NULL, NULL);
1138 memset (&ctx, 0, sizeof (ctx));
1140 if (FALSE && klass->generic_class) {
1141 ctx.class_inst = klass->generic_class->context.class_inst;
1142 ctx.method_inst = NULL;
1144 ref->method = mono_class_inflate_generic_method_full (ref->method, klass, &ctx);
1147 memset (&ctx, 0, sizeof (ctx));
1149 if (!decode_generic_context (module, &ctx, p, &p))
1152 ref->method = mono_class_inflate_generic_method_full (ref->method, klass, &ctx);
1153 } else if (image_index == MONO_AOT_METHODREF_ARRAY) {
1157 klass = decode_klass_ref (module, p, &p);
1160 method_type = decode_value (p, &p);
1161 switch (method_type) {
1163 ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank);
1166 ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank * 2);
1169 ref->method = mono_class_get_method_from_name (klass, "Get", -1);
1172 ref->method = mono_class_get_method_from_name (klass, "Address", -1);
1175 ref->method = mono_class_get_method_from_name (klass, "Set", -1);
1178 g_assert_not_reached ();
1181 if (image_index == MONO_AOT_METHODREF_LARGE_IMAGE_INDEX) {
1182 image_index = decode_value (p, &p);
1183 value = decode_value (p, &p);
1186 ref->token = MONO_TOKEN_METHOD_DEF | (value & 0xffffff);
1188 image = load_image (module, image_index, TRUE);
1201 decode_method_ref (MonoAotModule *module, MethodRef *ref, guint8 *buf, guint8 **endbuf)
1203 return decode_method_ref_with_target (module, ref, NULL, buf, endbuf);
1207 * decode_resolve_method_ref_with_target:
1209 * Similar to decode_method_ref, but resolve and return the method itself.
1212 decode_resolve_method_ref_with_target (MonoAotModule *module, MonoMethod *target, guint8 *buf, guint8 **endbuf)
1217 res = decode_method_ref_with_target (module, &ref, target, buf, endbuf);
1224 return mono_get_method (ref.image, ref.token, NULL);
1228 decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
1230 return decode_resolve_method_ref_with_target (module, NULL, buf, endbuf);
1234 create_cache_structure (void)
1240 home = g_get_home_dir ();
1244 tmp = g_build_filename (home, ".mono", NULL);
1245 if (!g_file_test (tmp, G_FILE_TEST_IS_DIR)) {
1246 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT creating directory %s", tmp);
1250 err = mkdir (tmp, 0777);
1253 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed: %s", g_strerror (errno));
1259 tmp = g_build_filename (home, ".mono", "aot-cache", NULL);
1260 if (!g_file_test (tmp, G_FILE_TEST_IS_DIR)) {
1261 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT creating directory %s", tmp);
1265 err = mkdir (tmp, 0777);
1268 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed: %s", g_strerror (errno));
1277 * load_aot_module_from_cache:
1279 * Experimental code to AOT compile loaded assemblies on demand.
1282 * - Add environment variable MONO_AOT_CACHE_OPTIONS
1283 * - Add options for controlling the cache size
1284 * - Handle full cache by deleting old assemblies lru style
1285 * - Add options for excluding assemblies during development
1286 * - Maybe add a threshold after an assembly is AOT compiled
1287 * - invoking a new mono process is a security risk
1288 * - recompile the AOT module if one of its dependencies changes
1291 load_aot_module_from_cache (MonoAssembly *assembly, char **aot_name)
1293 char *fname, *cmd, *tmp2, *aot_options;
1302 if (assembly->image->dynamic)
1305 create_cache_structure ();
1307 home = g_get_home_dir ();
1309 tmp2 = g_strdup_printf ("%s-%s%s", assembly->image->assembly_name, assembly->image->guid, SHARED_EXT);
1310 fname = g_build_filename (home, ".mono", "aot-cache", tmp2, NULL);
1314 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT trying to load from cache: '%s'.", fname);
1315 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
1318 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT not found.");
1320 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT precompiling assembly '%s'... ", assembly->image->name);
1322 aot_options = g_strdup_printf ("outfile=%s", fname);
1324 if (spawn_compiler) {
1325 /* FIXME: security */
1326 /* FIXME: Has to pass the assembly loading path to the child process */
1327 cmd = g_strdup_printf ("mono -O=all --aot=%s %s", aot_options, assembly->image->name);
1329 res = g_spawn_command_line_sync (cmd, &out, &err, &exit_status, NULL);
1331 #if !defined(HOST_WIN32) && !defined(__ppc__) && !defined(__ppc64__) && !defined(__powerpc__)
1333 if (!WIFEXITED (exit_status) && (WEXITSTATUS (exit_status) == 0))
1334 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT failed: %s.", err);
1336 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT succeeded.");
1343 res = mono_compile_assembly (assembly, mono_parse_default_optimizations (NULL), aot_options);
1345 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT failed.");
1347 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT succeeded.");
1351 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
1353 g_free (aot_options);
1360 find_symbol (MonoDl *module, gpointer *globals, const char *name, gpointer *value)
1364 guint16 *table, *entry;
1367 char *symbol = (char*)name;
1370 symbol = g_strdup_printf ("_%s", name);
1373 /* The first entry points to the hash */
1374 table = globals [0];
1377 table_size = table [0];
1380 hash = mono_metadata_str_hash (symbol) % table_size;
1382 entry = &table [hash * 2];
1384 /* Search the hash for the index into the globals table */
1386 while (entry [0] != 0) {
1387 guint32 index = entry [0] - 1;
1388 guint32 next = entry [1];
1390 //printf ("X: %s %s\n", (char*)globals [index * 2], name);
1392 if (!strcmp (globals [index * 2], symbol)) {
1393 global_index = index;
1398 entry = &table [next * 2];
1404 if (global_index != -1)
1405 *value = globals [global_index * 2 + 1];
1412 char *err = mono_dl_symbol (module, name, value);
1420 check_usable (MonoAssembly *assembly, MonoAotFileInfo *info, char **out_msg)
1424 gboolean usable = TRUE;
1427 guint32 excluded_cpu_optimizations;
1429 if (strcmp (assembly->image->guid, info->assembly_guid)) {
1430 msg = g_strdup_printf ("doesn't match assembly");
1434 build_info = mono_get_runtime_build_info ();
1435 if (strlen (info->runtime_version) > 0 && strcmp (info->runtime_version, build_info)) {
1436 msg = g_strdup_printf ("compiled against runtime version '%s' while this runtime has version '%s'", info->runtime_version, build_info);
1439 g_free (build_info);
1441 full_aot = info->flags & MONO_AOT_FILE_FLAG_FULL_AOT;
1443 if (mono_aot_only && !full_aot) {
1444 msg = g_strdup_printf ("not compiled with --aot=full");
1447 if (!mono_aot_only && full_aot) {
1448 msg = g_strdup_printf ("compiled with --aot=full");
1452 /* mono_arch_find_imt_method () requires this */
1453 if ((info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM) && !mono_use_llvm) {
1454 msg = g_strdup_printf ("compiled against LLVM");
1457 if (!(info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM) && mono_use_llvm) {
1458 msg = g_strdup_printf ("not compiled against LLVM");
1462 if (mini_get_debug_options ()->mdb_optimizations && !(info->flags & MONO_AOT_FILE_FLAG_DEBUG) && !full_aot) {
1463 msg = g_strdup_printf ("not compiled for debugging");
1467 mono_arch_cpu_optimizations (&excluded_cpu_optimizations);
1468 if (info->opts & excluded_cpu_optimizations) {
1469 msg = g_strdup_printf ("compiled with unsupported CPU optimizations");
1473 if (!mono_aot_only && (info->simd_opts & ~mono_arch_cpu_enumerate_simd_versions ())) {
1474 msg = g_strdup_printf ("compiled with unsupported SIMD extensions");
1480 if (info->gc_name_index != -1) {
1481 char *gc_name = (char*)&blob [info->gc_name_index];
1482 const char *current_gc_name = mono_gc_get_gc_name ();
1484 if (strcmp (current_gc_name, gc_name) != 0) {
1485 msg = g_strdup_printf ("compiled against GC %s, while the current runtime uses GC %s.\n", gc_name, current_gc_name);
1494 /* This returns an interop address */
1496 get_arm_bl_target (guint32 *ins_addr)
1499 guint32 ins = *ins_addr;
1502 if ((ins >> ARMCOND_SHIFT) == ARMCOND_NV) {
1504 offset = (((int)(((ins & 0xffffff) << 1) | ((ins >> 24) & 0x1))) << 7) >> 7;
1505 return (char*)ins_addr + (offset * 2) + 8 + 1;
1507 offset = (((int)ins & 0xffffff) << 8) >> 8;
1508 return (char*)ins_addr + (offset * 4) + 8;
1511 g_assert_not_reached ();
1517 load_aot_module (MonoAssembly *assembly, gpointer user_data)
1520 MonoAotModule *amodule;
1522 gboolean usable = TRUE;
1523 char *version_symbol = NULL;
1525 gpointer *globals = NULL;
1526 MonoAotFileInfo *info = NULL;
1529 gboolean do_load_image = TRUE;
1530 int align_double, align_int64;
1532 if (mono_compile_aot)
1535 if (assembly->image->aot_module)
1537 * Already loaded. This can happen because the assembly loading code might invoke
1538 * the assembly load hooks multiple times for the same assembly.
1542 if (assembly->image->dynamic || assembly->ref_only)
1545 if (mono_security_cas_enabled ())
1549 if (static_aot_modules)
1550 info = g_hash_table_lookup (static_aot_modules, assembly->aname.name);
1556 /* Statically linked AOT module */
1558 aot_name = g_strdup_printf ("%s", assembly->aname.name);
1559 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "Found statically linked AOT module '%s'.\n", aot_name);
1560 globals = info->globals;
1563 sofile = load_aot_module_from_cache (assembly, &aot_name);
1566 aot_name = g_strdup_printf ("%s%s", assembly->image->name, SHARED_EXT);
1568 sofile = mono_dl_open (aot_name, MONO_DL_LAZY, &err);
1571 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed to load AOT module %s: %s\n", aot_name, err);
1577 if (!sofile && !globals) {
1578 if (mono_aot_only && assembly->image->tables [MONO_TABLE_METHOD].rows) {
1579 fprintf (stderr, "Failed to load AOT module '%s' in aot-only mode.\n", aot_name);
1587 find_symbol (sofile, globals, "mono_aot_version", (gpointer *) &version_symbol);
1588 find_symbol (sofile, globals, "mono_aot_file_info", (gpointer*)&info);
1591 if (version_symbol) {
1592 /* Old file format */
1593 version = atoi (version_symbol);
1596 version = info->version;
1599 if (version != MONO_AOT_FILE_VERSION) {
1600 msg = g_strdup_printf ("wrong file format version (expected %d got %d)", MONO_AOT_FILE_VERSION, version);
1603 usable = check_usable (assembly, info, &msg);
1607 if (mono_aot_only) {
1608 fprintf (stderr, "Failed to load AOT module '%s' while running in aot-only mode: %s.\n", aot_name, msg);
1611 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is unusable: %s.\n", aot_name, msg);
1616 mono_dl_close (sofile);
1617 assembly->image->aot_module = NULL;
1621 #if defined (TARGET_ARM) && defined (TARGET_MACH)
1626 memset (&t, 0, sizeof (MonoType));
1627 t.type = MONO_TYPE_R8;
1628 mono_type_size (&t, &align);
1629 align_double = align;
1631 memset (&t, 0, sizeof (MonoType));
1632 t.type = MONO_TYPE_I8;
1633 align_int64 = align;
1636 align_double = __alignof__ (double);
1637 align_int64 = __alignof__ (gint64);
1641 g_assert (info->double_align == align_double);
1642 g_assert (info->long_align == align_int64);
1646 amodule = g_new0 (MonoAotModule, 1);
1647 amodule->aot_name = aot_name;
1648 amodule->assembly = assembly;
1650 memcpy (&amodule->info, info, sizeof (*info));
1652 amodule->got = amodule->info.got;
1653 amodule->got [0] = assembly->image;
1654 amodule->globals = globals;
1655 amodule->sofile = sofile;
1656 amodule->method_to_code = g_hash_table_new (mono_aligned_addr_hash, NULL);
1657 amodule->blob = blob;
1659 /* Read image table */
1661 guint32 table_len, i;
1664 table = info->image_table;
1667 table_len = *(guint32*)table;
1668 table += sizeof (guint32);
1669 amodule->image_table = g_new0 (MonoImage*, table_len);
1670 amodule->image_names = g_new0 (MonoAssemblyName, table_len);
1671 amodule->image_guids = g_new0 (char*, table_len);
1672 amodule->image_table_len = table_len;
1673 for (i = 0; i < table_len; ++i) {
1674 MonoAssemblyName *aname = &(amodule->image_names [i]);
1676 aname->name = g_strdup (table);
1677 table += strlen (table) + 1;
1678 amodule->image_guids [i] = g_strdup (table);
1679 table += strlen (table) + 1;
1681 aname->culture = g_strdup (table);
1682 table += strlen (table) + 1;
1683 memcpy (aname->public_key_token, table, strlen (table) + 1);
1684 table += strlen (table) + 1;
1686 table = ALIGN_PTR_TO (table, 8);
1687 aname->flags = *(guint32*)table;
1689 aname->major = *(guint32*)table;
1691 aname->minor = *(guint32*)table;
1693 aname->build = *(guint32*)table;
1695 aname->revision = *(guint32*)table;
1700 amodule->code_offsets = info->code_offsets;
1702 amodule->method_addresses = info->method_addresses;
1704 amodule->code = info->methods;
1706 /* Mask out thumb interop bit */
1707 amodule->code = (void*)((mgreg_t)amodule->code & ~1);
1709 amodule->code_end = info->methods_end;
1710 amodule->method_info_offsets = info->method_info_offsets;
1711 amodule->ex_info_offsets = info->ex_info_offsets;
1712 amodule->class_info_offsets = info->class_info_offsets;
1713 amodule->class_name_table = info->class_name_table;
1714 amodule->extra_method_table = info->extra_method_table;
1715 amodule->extra_method_info_offsets = info->extra_method_info_offsets;
1716 amodule->unbox_trampolines = info->unbox_trampolines;
1717 amodule->unbox_trampolines_end = info->unbox_trampolines_end;
1718 amodule->got_info_offsets = info->got_info_offsets;
1719 amodule->unwind_info = info->unwind_info;
1720 amodule->mem_end = info->mem_end;
1721 amodule->mem_begin = amodule->code;
1722 amodule->plt = info->plt;
1723 amodule->plt_end = info->plt_end;
1724 amodule->mono_eh_frame = info->mono_eh_frame;
1725 amodule->trampolines [MONO_AOT_TRAMP_SPECIFIC] = info->specific_trampolines;
1726 amodule->trampolines [MONO_AOT_TRAMP_STATIC_RGCTX] = info->static_rgctx_trampolines;
1727 amodule->trampolines [MONO_AOT_TRAMP_IMT_THUNK] = info->imt_thunks;
1728 amodule->trampolines [MONO_AOT_TRAMP_GSHAREDVT_ARG] = info->gsharedvt_arg_trampolines;
1729 amodule->thumb_end = info->thumb_end;
1732 if (info->flags & MONO_AOT_FILE_FLAG_DIRECT_METHOD_ADDRESSES) {
1733 /* Compute code_offsets from the method addresses */
1734 amodule->code_offsets = g_malloc0 (amodule->info.nmethods * sizeof (gint32));
1735 for (i = 0; i < amodule->info.nmethods; ++i) {
1736 /* method_addresses () contains a table of branches, since the ios linker can update those correctly */
1737 void *addr = get_arm_bl_target ((guint32*)(amodule->method_addresses + i));
1739 if (addr == amodule->method_addresses)
1740 amodule->code_offsets [i] = 0xffffffff;
1742 amodule->code_offsets [i] = (char*)addr - (char*)amodule->code;
1747 if (make_unreadable) {
1748 #ifndef TARGET_WIN32
1750 guint8 *page_start, *page_end;
1753 addr = amodule->mem_begin;
1754 len = amodule->mem_end - amodule->mem_begin;
1756 /* Round down in both directions to avoid modifying data which is not ours */
1757 page_start = (guint8 *) (((gssize) (addr)) & ~ (mono_pagesize () - 1)) + mono_pagesize ();
1758 page_end = (guint8 *) (((gssize) (addr + len)) & ~ (mono_pagesize () - 1));
1759 if (page_end > page_start) {
1760 err = mono_mprotect (page_start, (page_end - page_start), MONO_MMAP_NONE);
1761 g_assert (err == 0);
1768 aot_code_low_addr = MIN (aot_code_low_addr, (gsize)amodule->code);
1769 aot_code_high_addr = MAX (aot_code_high_addr, (gsize)amodule->code_end);
1771 g_hash_table_insert (aot_modules, assembly, amodule);
1774 mono_jit_info_add_aot_module (assembly->image, amodule->code, amodule->code_end);
1776 assembly->image->aot_module = amodule;
1778 if (mono_aot_only) {
1780 find_symbol (amodule->sofile, amodule->globals, "specific_trampolines_page", (gpointer *)&code);
1781 amodule->use_page_trampolines = code != NULL;
1782 /*g_warning ("using page trampolines: %d", amodule->use_page_trampolines);*/
1783 if (mono_defaults.corlib) {
1784 /* The second got slot contains the mscorlib got addr */
1785 MonoAotModule *mscorlib_amodule = mono_defaults.corlib->aot_module;
1787 amodule->got [1] = mscorlib_amodule->got;
1789 amodule->got [1] = amodule->got;
1793 if (mono_gc_is_moving ()) {
1796 memset (&ji, 0, sizeof (ji));
1797 ji.type = MONO_PATCH_INFO_GC_CARD_TABLE_ADDR;
1799 amodule->got [2] = mono_resolve_patch_target (NULL, mono_get_root_domain (), NULL, &ji, FALSE);
1803 * Since we store methoddef and classdef tokens when referring to methods/classes in
1804 * referenced assemblies, we depend on the exact versions of the referenced assemblies.
1805 * MS calls this 'hard binding'. This means we have to load all referenced assemblies
1806 * non-lazily, since we can't handle out-of-date errors later.
1807 * The cached class info also depends on the exact assemblies.
1809 #if defined(__native_client__)
1810 /* TODO: Don't 'load_image' on mscorlib due to a */
1811 /* recursive loading problem. This should be */
1812 /* removed if mscorlib is loaded from disk. */
1813 if (strncmp(assembly->aname.name, "mscorlib", 8)) {
1814 do_load_image = TRUE;
1816 do_load_image = FALSE;
1819 if (do_load_image) {
1820 for (i = 0; i < amodule->image_table_len; ++i)
1821 load_image (amodule, i, FALSE);
1824 if (amodule->out_of_date) {
1825 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);
1826 if (mono_aot_only) {
1827 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);
1832 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT loaded AOT Module for %s.\n", assembly->image->name);
1836 * mono_aot_register_globals:
1838 * This is called by the ctor function in AOT images compiled with the
1839 * 'no-dlsym' option.
1842 mono_aot_register_globals (gpointer *globals)
1844 g_assert_not_reached ();
1848 * mono_aot_register_module:
1850 * This should be called by embedding code to register AOT modules statically linked
1851 * into the executable. AOT_INFO should be the value of the
1852 * 'mono_aot_module_<ASSEMBLY_NAME>_info' global symbol from the AOT module.
1855 mono_aot_register_module (gpointer *aot_info)
1859 MonoAotFileInfo *info = (gpointer)aot_info;
1861 g_assert (info->version == MONO_AOT_FILE_VERSION);
1863 globals = info->globals;
1866 aname = info->assembly_name;
1868 /* This could be called before startup */
1872 if (!static_aot_modules)
1873 static_aot_modules = g_hash_table_new (g_str_hash, g_str_equal);
1875 g_hash_table_insert (static_aot_modules, aname, info);
1882 mono_aot_init (void)
1884 InitializeCriticalSection (&aot_mutex);
1885 InitializeCriticalSection (&aot_page_mutex);
1886 aot_modules = g_hash_table_new (NULL, NULL);
1888 #ifndef __native_client__
1889 mono_install_assembly_load_hook (load_aot_module, NULL);
1892 if (g_getenv ("MONO_LASTAOT"))
1893 mono_last_aot_method = atoi (g_getenv ("MONO_LASTAOT"));
1894 if (g_getenv ("MONO_AOT_CACHE"))
1895 use_aot_cache = TRUE;
1899 mono_aot_cleanup (void)
1901 if (aot_jit_icall_hash)
1902 g_hash_table_destroy (aot_jit_icall_hash);
1904 g_hash_table_destroy (aot_modules);
1908 decode_cached_class_info (MonoAotModule *module, MonoCachedClassInfo *info, guint8 *buf, guint8 **endbuf)
1914 info->vtable_size = decode_value (buf, &buf);
1915 if (info->vtable_size == -1)
1918 flags = decode_value (buf, &buf);
1919 info->ghcimpl = (flags >> 0) & 0x1;
1920 info->has_finalize = (flags >> 1) & 0x1;
1921 info->has_cctor = (flags >> 2) & 0x1;
1922 info->has_nested_classes = (flags >> 3) & 0x1;
1923 info->blittable = (flags >> 4) & 0x1;
1924 info->has_references = (flags >> 5) & 0x1;
1925 info->has_static_refs = (flags >> 6) & 0x1;
1926 info->no_special_static_fields = (flags >> 7) & 0x1;
1927 info->is_generic_container = (flags >> 8) & 0x1;
1929 if (info->has_cctor) {
1930 res = decode_method_ref (module, &ref, buf, &buf);
1933 info->cctor_token = ref.token;
1935 if (info->has_finalize) {
1936 res = decode_method_ref (module, &ref, buf, &buf);
1939 info->finalize_image = ref.image;
1940 info->finalize_token = ref.token;
1943 info->instance_size = decode_value (buf, &buf);
1944 info->class_size = decode_value (buf, &buf);
1945 info->packing_size = decode_value (buf, &buf);
1946 info->min_align = decode_value (buf, &buf);
1954 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
1957 MonoClass *klass = vtable->klass;
1958 MonoAotModule *amodule = klass->image->aot_module;
1960 MonoCachedClassInfo class_info;
1965 if (MONO_CLASS_IS_INTERFACE (klass) || klass->rank || !amodule)
1968 info = &amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
1971 err = decode_cached_class_info (amodule, &class_info, p, &p);
1975 for (i = 0; i < slot; ++i)
1976 decode_method_ref (amodule, &ref, p, &p);
1978 res = decode_method_ref (amodule, &ref, p, &p);
1981 if (ref.no_aot_trampoline)
1984 if (mono_metadata_token_index (ref.token) == 0 || mono_metadata_token_table (ref.token) != MONO_TABLE_METHOD)
1987 return mono_aot_get_method_from_token (domain, ref.image, ref.token);
1991 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
1993 MonoAotModule *amodule = klass->image->aot_module;
1997 if (klass->rank || !amodule)
2000 p = (guint8*)&amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
2002 err = decode_cached_class_info (amodule, res, p, &p);
2010 * mono_aot_get_class_from_name:
2012 * Obtains a MonoClass with a given namespace and a given name which is located in IMAGE,
2013 * using a cache stored in the AOT file.
2014 * Stores the resulting class in *KLASS if found, stores NULL otherwise.
2016 * Returns: TRUE if the klass was found/not found in the cache, FALSE if no aot file was
2020 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
2022 MonoAotModule *amodule = image->aot_module;
2023 guint16 *table, *entry;
2026 char full_name_buf [1024];
2028 const char *name2, *name_space2;
2030 guint32 cols [MONO_TYPEDEF_SIZE];
2031 GHashTable *nspace_table;
2033 if (!amodule || !amodule->class_name_table)
2040 /* First look in the cache */
2041 if (!amodule->name_cache)
2042 amodule->name_cache = g_hash_table_new (g_str_hash, g_str_equal);
2043 nspace_table = g_hash_table_lookup (amodule->name_cache, name_space);
2045 *klass = g_hash_table_lookup (nspace_table, name);
2052 table_size = amodule->class_name_table [0];
2053 table = amodule->class_name_table + 1;
2055 if (name_space [0] == '\0')
2056 full_name = g_strdup_printf ("%s", name);
2058 if (strlen (name_space) + strlen (name) < 1000) {
2059 sprintf (full_name_buf, "%s.%s", name_space, name);
2060 full_name = full_name_buf;
2062 full_name = g_strdup_printf ("%s.%s", name_space, name);
2065 hash = mono_metadata_str_hash (full_name) % table_size;
2066 if (full_name != full_name_buf)
2069 entry = &table [hash * 2];
2071 if (entry [0] != 0) {
2072 t = &image->tables [MONO_TABLE_TYPEDEF];
2075 guint32 index = entry [0];
2076 guint32 next = entry [1];
2077 guint32 token = mono_metadata_make_token (MONO_TABLE_TYPEDEF, index);
2079 name_table_accesses ++;
2081 mono_metadata_decode_row (t, index - 1, cols, MONO_TYPEDEF_SIZE);
2083 name2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
2084 name_space2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
2086 if (!strcmp (name, name2) && !strcmp (name_space, name_space2)) {
2088 *klass = mono_class_get (image, token);
2093 nspace_table = g_hash_table_lookup (amodule->name_cache, name_space);
2094 if (!nspace_table) {
2095 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
2096 g_hash_table_insert (amodule->name_cache, (char*)name_space2, nspace_table);
2098 g_hash_table_insert (nspace_table, (char*)name2, *klass);
2105 entry = &table [next * 2];
2118 * decode_mono_eh_frame:
2120 * Decode the EH information emitted by our modified LLVM compiler and construct a
2121 * MonoJitInfo structure from it.
2122 * LOCKING: Acquires the domain lock.
2125 decode_llvm_mono_eh_frame (MonoAotModule *amodule, MonoDomain *domain,
2126 MonoMethod *method, guint8 *code,
2127 MonoJitExceptionInfo *clauses, int num_clauses,
2128 int extra_size, GSList **nesting,
2129 int *this_reg, int *this_offset)
2132 guint8 *fde, *cie, *code_start, *code_end;
2133 int version, fde_count;
2135 int i, j, pos, left, right, offset, offset1, offset2, code_len, func_encoding;
2136 MonoJitExceptionInfo *ei;
2137 guint32 fde_len, ei_len, nested_len, nindex;
2138 gpointer *type_info;
2140 MonoLLVMFDEInfo info;
2142 g_assert (amodule->mono_eh_frame);
2144 p = amodule->mono_eh_frame;
2146 /* p points to data emitted by LLVM in DwarfException::EmitMonoEHFrame () */
2150 g_assert (version == 3);
2154 p = ALIGN_PTR_TO (p, 4);
2156 fde_count = *(guint32*)p;
2160 /* There is +1 entry in the table */
2161 cie = p + ((fde_count + 1) * 8);
2163 /* Binary search in the table to find the entry for code */
2164 offset = code - amodule->code;
2168 pos = (left + right) / 2;
2170 /* The table contains method index/fde offset pairs */
2171 g_assert (table [(pos * 2)] != -1);
2172 offset1 = amodule->code_offsets [table [(pos * 2)]];
2173 if (pos + 1 == fde_count) {
2174 offset2 = amodule->code_end - amodule->code;
2176 g_assert (table [(pos + 1) * 2] != -1);
2177 offset2 = amodule->code_offsets [table [(pos + 1) * 2]];
2180 if (offset < offset1)
2182 else if (offset >= offset2)
2188 code_start = amodule->code + amodule->code_offsets [table [(pos * 2)]];
2189 if (pos + 1 == fde_count)
2191 code_end = amodule->code_end;
2193 code_end = amodule->code + amodule->code_offsets [table [(pos + 1) * 2]];
2194 code_len = code_end - code_start;
2196 g_assert (code >= code_start && code < code_end);
2198 if (amodule->thumb_end && (guint8*)code_start < amodule->thumb_end)
2199 /* Clear thumb flag */
2200 code_start = (guint8*)(((mgreg_t)code_start) & ~1);
2202 fde = amodule->mono_eh_frame + table [(pos * 2) + 1];
2203 /* This won't overflow because there is +1 entry in the table */
2204 fde_len = table [(pos * 2) + 2 + 1] - table [(pos * 2) + 1];
2206 mono_unwind_decode_llvm_mono_fde (fde, fde_len, cie, code_start, &info);
2208 ei_len = info.ex_info_len;
2209 type_info = info.type_info;
2210 *this_reg = info.this_reg;
2211 *this_offset = info.this_offset;
2213 /* Count number of nested clauses */
2215 for (i = 0; i < ei_len; ++i) {
2216 /* This might be unaligned */
2217 gint32 cindex1 = read32 (type_info [i]);
2220 for (l = nesting [cindex1]; l; l = l->next) {
2221 gint32 nesting_cindex = GPOINTER_TO_INT (l->data);
2223 for (j = 0; j < ei_len; ++j) {
2224 gint32 cindex2 = read32 (type_info [j]);
2226 if (cindex2 == nesting_cindex)
2233 * LLVM might represent one IL region with multiple regions, so have to
2234 * allocate a new JI.
2237 mono_domain_alloc0 (domain, MONO_SIZEOF_JIT_INFO + (sizeof (MonoJitExceptionInfo) * (ei_len + nested_len)) + extra_size);
2239 jinfo->code_size = code_len;
2240 jinfo->used_regs = mono_cache_unwind_info (info.unw_info, info.unw_info_len);
2241 jinfo->method = method;
2242 jinfo->code_start = code;
2243 jinfo->domain_neutral = 0;
2244 /* This signals that used_regs points to a normal cached unwind info */
2245 jinfo->from_aot = 0;
2246 jinfo->num_clauses = ei_len + nested_len;
2248 for (i = 0; i < ei_len; ++i) {
2250 * orig_jinfo contains the original IL exception info saved by the AOT
2251 * compiler, we have to combine that with the information produced by LLVM
2253 /* The type_info entries contain IL clause indexes */
2254 int clause_index = read32 (type_info [i]);
2255 MonoJitExceptionInfo *jei = &jinfo->clauses [i];
2256 MonoJitExceptionInfo *orig_jei = &clauses [clause_index];
2258 g_assert (clause_index < num_clauses);
2259 jei->flags = orig_jei->flags;
2260 jei->data.catch_class = orig_jei->data.catch_class;
2262 jei->try_start = ei [i].try_start;
2263 jei->try_end = ei [i].try_end;
2264 jei->handler_start = ei [i].handler_start;
2266 /* Make sure we transition to thumb when a handler starts */
2267 if (amodule->thumb_end && (guint8*)jei->handler_start < amodule->thumb_end)
2268 jei->handler_start = (void*)((mgreg_t)jei->handler_start + 1);
2271 /* See exception_cb () in mini-llvm.c as to why this is needed */
2273 for (i = 0; i < ei_len; ++i) {
2274 gint32 cindex1 = read32 (type_info [i]);
2277 for (l = nesting [cindex1]; l; l = l->next) {
2278 gint32 nesting_cindex = GPOINTER_TO_INT (l->data);
2280 for (j = 0; j < ei_len; ++j) {
2281 gint32 cindex2 = read32 (type_info [j]);
2283 if (cindex2 == nesting_cindex) {
2285 * The try interval comes from the nested clause, everything else from the
2288 memcpy (&jinfo->clauses [nindex], &jinfo->clauses [j], sizeof (MonoJitExceptionInfo));
2289 jinfo->clauses [nindex].try_start = jinfo->clauses [i].try_start;
2290 jinfo->clauses [nindex].try_end = jinfo->clauses [i].try_end;
2296 g_assert (nindex == ei_len + nested_len);
2302 * LOCKING: Acquires the domain lock.
2305 decode_exception_debug_info (MonoAotModule *amodule, MonoDomain *domain,
2306 MonoMethod *method, guint8* ex_info, guint8 *addr,
2307 guint8 *code, guint32 code_len)
2309 int i, buf_len, num_clauses;
2311 guint used_int_regs, flags;
2312 gboolean has_generic_jit_info, has_dwarf_unwind_info, has_clauses, has_seq_points, has_try_block_holes, has_arch_eh_jit_info;
2313 gboolean from_llvm, has_gc_map;
2315 int generic_info_size, try_holes_info_size, num_holes, arch_eh_jit_info_size;
2316 int this_reg = 0, this_offset = 0;
2318 /* Load the method info from the AOT file */
2321 flags = decode_value (p, &p);
2322 has_generic_jit_info = (flags & 1) != 0;
2323 has_dwarf_unwind_info = (flags & 2) != 0;
2324 has_clauses = (flags & 4) != 0;
2325 has_seq_points = (flags & 8) != 0;
2326 from_llvm = (flags & 16) != 0;
2327 has_try_block_holes = (flags & 32) != 0;
2328 has_gc_map = (flags & 64) != 0;
2329 has_arch_eh_jit_info = (flags & 128) != 0;
2331 if (has_dwarf_unwind_info) {
2334 offset = decode_value (p, &p);
2335 g_assert (offset < (1 << 30));
2336 used_int_regs = offset;
2338 used_int_regs = decode_value (p, &p);
2340 if (has_generic_jit_info)
2341 generic_info_size = sizeof (MonoGenericJitInfo);
2343 generic_info_size = 0;
2345 if (has_try_block_holes) {
2346 num_holes = decode_value (p, &p);
2347 try_holes_info_size = sizeof (MonoTryBlockHoleTableJitInfo) + num_holes * sizeof (MonoTryBlockHoleJitInfo);
2349 num_holes = try_holes_info_size = 0;
2351 /* Exception table */
2353 num_clauses = decode_value (p, &p);
2356 if (has_arch_eh_jit_info)
2357 arch_eh_jit_info_size = sizeof (MonoArchEHJitInfo);
2359 arch_eh_jit_info_size = 0;
2362 MonoJitExceptionInfo *clauses;
2366 * Part of the info is encoded by the AOT compiler, the rest is in the .eh_frame
2369 clauses = g_new0 (MonoJitExceptionInfo, num_clauses);
2370 nesting = g_new0 (GSList*, num_clauses);
2372 for (i = 0; i < num_clauses; ++i) {
2373 MonoJitExceptionInfo *ei = &clauses [i];
2375 ei->flags = decode_value (p, &p);
2377 if (decode_value (p, &p))
2378 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
2380 /* Read the list of nesting clauses */
2382 int nesting_index = decode_value (p, &p);
2383 if (nesting_index == -1)
2385 nesting [i] = g_slist_prepend (nesting [i], GINT_TO_POINTER (nesting_index));
2389 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);
2390 jinfo->from_llvm = 1;
2393 for (i = 0; i < num_clauses; ++i)
2394 g_slist_free (nesting [i]);
2398 mono_domain_alloc0 (domain, MONO_SIZEOF_JIT_INFO + (sizeof (MonoJitExceptionInfo) * num_clauses) + generic_info_size + try_holes_info_size + arch_eh_jit_info_size);
2399 jinfo->num_clauses = num_clauses;
2401 for (i = 0; i < jinfo->num_clauses; ++i) {
2402 MonoJitExceptionInfo *ei = &jinfo->clauses [i];
2404 ei->flags = decode_value (p, &p);
2406 ei->exvar_offset = decode_value (p, &p);
2408 if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER || ei->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
2409 ei->data.filter = code + decode_value (p, &p);
2411 if (decode_value (p, &p))
2412 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
2415 ei->try_start = code + decode_value (p, &p);
2416 ei->try_end = code + decode_value (p, &p);
2417 ei->handler_start = code + decode_value (p, &p);
2420 jinfo->code_size = code_len;
2421 jinfo->used_regs = used_int_regs;
2422 jinfo->method = method;
2423 jinfo->code_start = code;
2424 jinfo->domain_neutral = 0;
2425 jinfo->from_aot = 1;
2428 if (has_generic_jit_info) {
2429 MonoGenericJitInfo *gi;
2431 jinfo->has_generic_jit_info = 1;
2433 gi = mono_jit_info_get_generic_jit_info (jinfo);
2436 gi->nlocs = decode_value (p, &p);
2438 gi->locations = mono_domain_alloc0 (domain, gi->nlocs * sizeof (MonoDwarfLocListEntry));
2439 for (i = 0; i < gi->nlocs; ++i) {
2440 MonoDwarfLocListEntry *entry = &gi->locations [i];
2442 entry->is_reg = decode_value (p, &p);
2443 entry->reg = decode_value (p, &p);
2445 entry->offset = decode_value (p, &p);
2447 entry->from = decode_value (p, &p);
2448 entry->to = decode_value (p, &p);
2452 gi->has_this = this_reg != -1;
2453 gi->this_reg = this_reg;
2454 gi->this_offset = this_offset;
2456 gi->has_this = decode_value (p, &p);
2457 gi->this_reg = decode_value (p, &p);
2458 gi->this_offset = decode_value (p, &p);
2462 jinfo->method = decode_resolve_method_ref (amodule, p, &p);
2464 gi->generic_sharing_context = g_new0 (MonoGenericSharingContext, 1);
2465 if (decode_value (p, &p)) {
2468 MonoGenericSharingContext *gsctx = gi->generic_sharing_context;
2470 n = decode_value (p, &p);
2472 gsctx->var_is_vt = g_new0 (gboolean, n);
2473 for (i = 0; i < n; ++i)
2474 gsctx->var_is_vt [i] = decode_value (p, &p);
2476 n = decode_value (p, &p);
2478 gsctx->mvar_is_vt = g_new0 (gboolean, n);
2479 for (i = 0; i < n; ++i)
2480 gsctx->mvar_is_vt [i] = decode_value (p, &p);
2485 if (has_try_block_holes) {
2486 MonoTryBlockHoleTableJitInfo *table;
2488 jinfo->has_try_block_holes = 1;
2490 table = mono_jit_info_get_try_block_hole_table_info (jinfo);
2493 table->num_holes = (guint16)num_holes;
2494 for (i = 0; i < num_holes; ++i) {
2495 MonoTryBlockHoleJitInfo *hole = &table->holes [i];
2496 hole->clause = decode_value (p, &p);
2497 hole->length = decode_value (p, &p);
2498 hole->offset = decode_value (p, &p);
2502 if (has_arch_eh_jit_info) {
2503 MonoArchEHJitInfo *eh_info;
2505 jinfo->has_arch_eh_info = 1;
2507 eh_info = mono_jit_info_get_arch_eh_info (jinfo);
2508 eh_info->stack_size = decode_value (p, &p);
2511 if (has_seq_points) {
2512 MonoSeqPointInfo *seq_points;
2513 int il_offset, native_offset, last_il_offset, last_native_offset, j;
2515 int len = decode_value (p, &p);
2517 seq_points = g_malloc0 (sizeof (MonoSeqPointInfo) + (len - MONO_ZERO_LEN_ARRAY) * sizeof (SeqPoint));
2518 seq_points->len = len;
2519 last_il_offset = last_native_offset = 0;
2520 for (i = 0; i < len; ++i) {
2521 SeqPoint *sp = &seq_points->seq_points [i];
2522 il_offset = last_il_offset + decode_value (p, &p);
2523 native_offset = last_native_offset + decode_value (p, &p);
2525 sp->il_offset = il_offset;
2526 sp->native_offset = native_offset;
2528 sp->next_len = decode_value (p, &p);
2529 sp->next = g_new (int, sp->next_len);
2530 for (j = 0; j < sp->next_len; ++j)
2531 sp->next [j] = decode_value (p, &p);
2533 last_il_offset = il_offset;
2534 last_native_offset = native_offset;
2537 mono_domain_lock (domain);
2538 g_hash_table_insert (domain_jit_info (domain)->seq_points, method, seq_points);
2539 mono_domain_unlock (domain);
2542 /* Load debug info */
2543 buf_len = decode_value (p, &p);
2544 mono_debug_add_aot_method (domain, method, code, p, buf_len);
2548 int map_size = decode_value (p, &p);
2549 /* The GC map requires 4 bytes of alignment */
2550 while ((guint64)(gsize)p % 4)
2556 if (amodule != jinfo->method->klass->image->aot_module) {
2559 ji_to_amodule = g_hash_table_new (NULL, NULL);
2560 g_hash_table_insert (ji_to_amodule, jinfo, amodule);
2568 * mono_aot_get_unwind_info:
2570 * Return a pointer to the DWARF unwind info belonging to JI.
2573 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
2575 MonoAotModule *amodule = ji->method->klass->image->aot_module;
2577 guint8 *code = ji->code_start;
2580 g_assert (ji->from_aot);
2582 if (!(code >= amodule->code && code <= amodule->code_end)) {
2583 /* ji belongs to a different aot module than amodule */
2585 g_assert (ji_to_amodule);
2586 amodule = g_hash_table_lookup (ji_to_amodule, ji);
2588 g_assert (code >= amodule->code && code <= amodule->code_end);
2592 p = amodule->unwind_info + ji->used_regs;
2593 *unwind_info_len = decode_value (p, &p);
2597 static G_GNUC_UNUSED int
2598 compare_ints (const void *a, const void *b)
2600 return *(gint32*)a - *(gint32*)b;
2604 msort_code_offsets_internal (gint32 *array, int lo, int hi, gint32 *scratch)
2606 int mid = (lo + hi) / 2;
2613 for (i = lo; i < hi; ++i)
2614 if (array [(i * 2)] > array [(i * 2) + 2])
2617 /* Already sorted */
2621 msort_code_offsets_internal (array, lo, mid, scratch);
2622 msort_code_offsets_internal (array, mid + 1, hi, scratch);
2624 if (array [mid * 2] < array [(mid + 1) * 2])
2630 for (i = lo; i <= hi; i ++) {
2631 if (t_lo <= mid && ((t_hi > hi) || array [t_lo * 2] < array [t_hi * 2])) {
2632 scratch [(i * 2)] = array [t_lo * 2];
2633 scratch [(i * 2) + 1] = array [(t_lo *2) + 1];
2636 scratch [(i * 2)] = array [t_hi * 2];
2637 scratch [(i * 2) + 1] = array [(t_hi *2) + 1];
2641 for (i = lo; i <= hi; ++i) {
2642 array [(i * 2)] = scratch [i * 2];
2643 array [(i * 2) + 1] = scratch [(i * 2) + 1];
2648 msort_code_offsets (gint32 *array, int len)
2652 scratch = g_new (gint32, len * 2);
2653 msort_code_offsets_internal (array, 0, len - 1, scratch);
2658 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
2660 int pos, left, right, offset, offset1, offset2, code_len;
2661 int method_index, table_len;
2663 MonoAotModule *amodule = image->aot_module;
2666 guint8 *code, *ex_info, *p;
2668 int nmethods = amodule->info.nmethods;
2669 gint32 *code_offsets;
2675 if (domain != mono_get_root_domain ())
2679 offset = (guint8*)addr - amodule->code;
2681 /* Compute a sorted table mapping code offsets to method indexes. */
2682 if (!amodule->sorted_code_offsets) {
2683 code_offsets = g_new0 (gint32, nmethods * 2);
2685 for (i = 0; i < nmethods; ++i) {
2686 /* Skip the -1 entries to speed up sorting */
2687 if (amodule->code_offsets [i] == 0xffffffff)
2689 code_offsets [(offsets_len * 2)] = amodule->code_offsets [i];
2690 code_offsets [(offsets_len *2) + 1] = i;
2693 /* Use a merge sort as this is mostly sorted */
2694 msort_code_offsets (code_offsets, offsets_len);
2695 //qsort (code_offsets, offsets_len, sizeof (gint32) * 2, compare_ints);
2696 for (i = 0; i < offsets_len -1; ++i)
2697 g_assert (code_offsets [(i * 2)] <= code_offsets [(i + 1) * 2]);
2699 amodule->sorted_code_offsets_len = offsets_len;
2700 mono_memory_barrier ();
2701 if (InterlockedCompareExchangePointer ((gpointer*)&amodule->sorted_code_offsets, code_offsets, NULL) != NULL)
2702 /* Somebody got in before us */
2703 g_free (code_offsets);
2706 code_offsets = amodule->sorted_code_offsets;
2707 offsets_len = amodule->sorted_code_offsets_len;
2709 if (offsets_len > 0 && (offset < code_offsets [0] || offset >= (amodule->code_end - amodule->code)))
2712 /* Binary search in the sorted_code_offsets table */
2714 right = offsets_len;
2716 pos = (left + right) / 2;
2718 offset1 = code_offsets [(pos * 2)];
2719 if (pos + 1 == offsets_len)
2720 offset2 = amodule->code_end - amodule->code;
2722 offset2 = code_offsets [(pos + 1) * 2];
2724 if (offset < offset1)
2726 else if (offset >= offset2)
2732 g_assert (offset >= code_offsets [(pos * 2)]);
2733 if (pos + 1 < offsets_len)
2734 g_assert (offset < code_offsets [((pos + 1) * 2)]);
2735 method_index = code_offsets [(pos * 2) + 1];
2737 code = &amodule->code [amodule->code_offsets [method_index]];
2738 ex_info = &amodule->blob [mono_aot_get_offset (amodule->ex_info_offsets, method_index)];
2740 if (pos == offsets_len - 1)
2741 code_len = amodule->code_end - code;
2743 code_len = code_offsets [(pos + 1) * 2] - code_offsets [pos * 2];
2745 g_assert ((guint8*)code <= (guint8*)addr && (guint8*)addr < (guint8*)code + code_len);
2747 /* Might be a wrapper/extra method */
2748 if (amodule->extra_methods) {
2750 method = g_hash_table_lookup (amodule->extra_methods, GUINT_TO_POINTER (method_index));
2757 if (method_index >= image->tables [MONO_TABLE_METHOD].rows) {
2759 * This is hit for extra methods which are called directly, so they are
2760 * not in amodule->extra_methods.
2762 table_len = amodule->extra_method_info_offsets [0];
2763 table = amodule->extra_method_info_offsets + 1;
2770 pos = ((left + right) / 2);
2772 g_assert (pos < table_len);
2774 if (table [pos * 2] < method_index)
2776 else if (table [pos * 2] > method_index)
2782 p = amodule->blob + table [(pos * 2) + 1];
2783 method = decode_resolve_method_ref (amodule, p, &p);
2785 /* Happens when a random address is passed in which matches a not-yey called wrapper encoded using its name */
2788 token = mono_metadata_make_token (MONO_TABLE_METHOD, method_index + 1);
2789 method = mono_get_method (image, token, NULL);
2796 //printf ("F: %s\n", mono_method_full_name (method, TRUE));
2798 jinfo = decode_exception_debug_info (amodule, domain, method, ex_info, addr, code, code_len);
2800 g_assert ((guint8*)addr >= (guint8*)jinfo->code_start);
2801 g_assert ((guint8*)addr < (guint8*)jinfo->code_start + jinfo->code_size);
2803 /* Add it to the normal JitInfo tables */
2804 mono_jit_info_table_add (domain, jinfo);
2810 decode_patch (MonoAotModule *aot_module, MonoMemPool *mp, MonoJumpInfo *ji, guint8 *buf, guint8 **endbuf)
2818 case MONO_PATCH_INFO_METHOD:
2819 case MONO_PATCH_INFO_METHOD_JUMP:
2820 case MONO_PATCH_INFO_ICALL_ADDR:
2821 case MONO_PATCH_INFO_METHOD_RGCTX: {
2825 res = decode_method_ref (aot_module, &ref, p, &p);
2829 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)) {
2830 ji->data.target = mono_create_ftnptr (mono_domain_get (), mono_create_jit_trampoline_from_token (ref.image, ref.token));
2831 ji->type = MONO_PATCH_INFO_ABS;
2835 ji->data.method = ref.method;
2837 ji->data.method = mono_get_method (ref.image, ref.token, NULL);
2838 g_assert (ji->data.method);
2839 mono_class_init (ji->data.method->klass);
2843 case MONO_PATCH_INFO_INTERNAL_METHOD:
2844 case MONO_PATCH_INFO_JIT_ICALL_ADDR: {
2845 guint32 len = decode_value (p, &p);
2847 ji->data.name = (char*)p;
2851 case MONO_PATCH_INFO_METHODCONST:
2853 ji->data.method = decode_resolve_method_ref (aot_module, p, &p);
2854 if (!ji->data.method)
2857 case MONO_PATCH_INFO_VTABLE:
2858 case MONO_PATCH_INFO_CLASS:
2859 case MONO_PATCH_INFO_IID:
2860 case MONO_PATCH_INFO_ADJUSTED_IID:
2862 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2863 if (!ji->data.klass)
2866 case MONO_PATCH_INFO_CLASS_INIT:
2867 case MONO_PATCH_INFO_DELEGATE_TRAMPOLINE:
2868 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2869 if (!ji->data.klass)
2872 case MONO_PATCH_INFO_IMAGE:
2873 ji->data.image = load_image (aot_module, decode_value (p, &p), TRUE);
2874 if (!ji->data.image)
2877 case MONO_PATCH_INFO_FIELD:
2878 case MONO_PATCH_INFO_SFLDA:
2880 ji->data.field = decode_field_info (aot_module, p, &p);
2881 if (!ji->data.field)
2884 case MONO_PATCH_INFO_SWITCH:
2885 ji->data.table = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoBBTable));
2886 ji->data.table->table_size = decode_value (p, &p);
2887 table = mono_domain_alloc (mono_domain_get (), sizeof (gpointer) * ji->data.table->table_size);
2888 ji->data.table->table = (MonoBasicBlock**)table;
2889 for (i = 0; i < ji->data.table->table_size; i++)
2890 table [i] = (gpointer)(gssize)decode_value (p, &p);
2892 case MONO_PATCH_INFO_R4: {
2895 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (float));
2896 val = decode_value (p, &p);
2897 *(float*)ji->data.target = *(float*)&val;
2900 case MONO_PATCH_INFO_R8: {
2904 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (double));
2906 val [0] = decode_value (p, &p);
2907 val [1] = decode_value (p, &p);
2908 v = ((guint64)val [1] << 32) | ((guint64)val [0]);
2909 *(double*)ji->data.target = *(double*)&v;
2912 case MONO_PATCH_INFO_LDSTR:
2913 image = load_image (aot_module, decode_value (p, &p), TRUE);
2916 ji->data.token = mono_jump_info_token_new (mp, image, MONO_TOKEN_STRING + decode_value (p, &p));
2918 case MONO_PATCH_INFO_RVA:
2919 case MONO_PATCH_INFO_DECLSEC:
2920 case MONO_PATCH_INFO_LDTOKEN:
2921 case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
2923 image = load_image (aot_module, decode_value (p, &p), TRUE);
2926 ji->data.token = mono_jump_info_token_new (mp, image, decode_value (p, &p));
2928 ji->data.token->has_context = decode_value (p, &p);
2929 if (ji->data.token->has_context) {
2930 gboolean res = decode_generic_context (aot_module, &ji->data.token->context, p, &p);
2935 case MONO_PATCH_INFO_EXC_NAME:
2936 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2937 if (!ji->data.klass)
2939 ji->data.name = ji->data.klass->name;
2941 case MONO_PATCH_INFO_METHOD_REL:
2942 ji->data.offset = decode_value (p, &p);
2944 case MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG:
2945 case MONO_PATCH_INFO_GENERIC_CLASS_INIT:
2946 case MONO_PATCH_INFO_MONITOR_ENTER:
2947 case MONO_PATCH_INFO_MONITOR_EXIT:
2948 case MONO_PATCH_INFO_GC_CARD_TABLE_ADDR:
2949 case MONO_PATCH_INFO_CASTCLASS_CACHE:
2950 case MONO_PATCH_INFO_JIT_TLS_ID:
2952 case MONO_PATCH_INFO_RGCTX_FETCH: {
2954 MonoJumpInfoRgctxEntry *entry;
2955 guint32 offset, val;
2958 offset = decode_value (p, &p);
2959 val = decode_value (p, &p);
2961 entry = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
2962 p2 = aot_module->blob + offset;
2963 entry->method = decode_resolve_method_ref (aot_module, p2, &p2);
2964 entry->in_mrgctx = ((val & 1) > 0) ? TRUE : FALSE;
2965 entry->info_type = (val >> 1) & 0xff;
2966 entry->data = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
2967 entry->data->type = (val >> 9) & 0xff;
2969 res = decode_patch (aot_module, mp, entry->data, p, &p);
2972 ji->data.rgctx_entry = entry;
2975 case MONO_PATCH_INFO_SEQ_POINT_INFO:
2977 case MONO_PATCH_INFO_LLVM_IMT_TRAMPOLINE: {
2978 MonoJumpInfoImtTramp *imt_tramp = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoImtTramp));
2980 imt_tramp->method = decode_resolve_method_ref (aot_module, p, &p);
2981 imt_tramp->vt_offset = decode_value (p, &p);
2983 ji->data.imt_tramp = imt_tramp;
2986 case MONO_PATCH_INFO_SIGNATURE:
2987 ji->data.target = decode_signature (aot_module, p, &p);
2989 case MONO_PATCH_INFO_TLS_OFFSET:
2990 ji->data.target = GINT_TO_POINTER (decode_value (p, &p));
2992 case MONO_PATCH_INFO_GSHAREDVT_CALL: {
2993 MonoJumpInfoGSharedVtCall *info = g_new0 (MonoJumpInfoGSharedVtCall, 1);
2994 info->sig = decode_signature (aot_module, p, &p);
2995 g_assert (info->sig);
2996 info->method = decode_resolve_method_ref (aot_module, p, &p);
2997 g_assert (info->method);
2999 ji->data.target = info;
3002 case MONO_PATCH_INFO_GSHAREDVT_METHOD: {
3003 MonoGSharedVtMethodInfo *info = g_new0 (MonoGSharedVtMethodInfo, 1);
3006 info->method = decode_resolve_method_ref (aot_module, p, &p);
3007 g_assert (info->method);
3008 nentries = decode_value (p, &p);
3009 info->entries = g_ptr_array_new ();
3010 for (i = 0; i < nentries; ++i) {
3011 MonoRuntimeGenericContextInfoTemplate *template = g_new0 (MonoRuntimeGenericContextInfoTemplate, 1);
3013 template->info_type = decode_value (p, &p);
3014 switch (mini_rgctx_info_type_to_patch_info_type (template->info_type)) {
3015 case MONO_PATCH_INFO_CLASS: {
3016 MonoClass *klass = decode_klass_ref (aot_module, p, &p);
3019 template->data = &klass->byval_arg;
3022 case MONO_PATCH_INFO_FIELD:
3023 template->data = decode_field_info (aot_module, p, &p);
3024 if (!template->data)
3028 g_assert_not_reached ();
3032 g_ptr_array_add (info->entries, template);
3034 ji->data.target = info;
3038 g_warning ("unhandled type %d", ji->type);
3039 g_assert_not_reached ();
3050 static MonoJumpInfo*
3051 load_patch_info (MonoAotModule *aot_module, MonoMemPool *mp, int n_patches,
3052 guint32 **got_slots,
3053 guint8 *buf, guint8 **endbuf)
3055 MonoJumpInfo *patches;
3061 patches = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo) * n_patches);
3063 *got_slots = g_malloc (sizeof (guint32) * n_patches);
3065 for (pindex = 0; pindex < n_patches; ++pindex) {
3066 MonoJumpInfo *ji = &patches [pindex];
3071 got_offset = decode_value (p, &p);
3073 if (aot_module->got [got_offset]) {
3074 /* Already loaded */
3075 //printf ("HIT!\n");
3077 shared_p = aot_module->blob + mono_aot_get_offset (aot_module->got_info_offsets, got_offset);
3079 ji->type = decode_value (shared_p, &shared_p);
3081 res = decode_patch (aot_module, mp, ji, shared_p, &shared_p);
3086 (*got_slots) [pindex] = got_offset;
3093 g_free (*got_slots);
3100 register_jump_target_got_slot (MonoDomain *domain, MonoMethod *method, gpointer *got_slot)
3103 * Jump addresses cannot be patched by the trampoline code since it
3104 * does not have access to the caller's address. Instead, we collect
3105 * the addresses of the GOT slots pointing to a method, and patch
3106 * them after the method has been compiled.
3108 MonoJitDomainInfo *info = domain_jit_info (domain);
3111 mono_domain_lock (domain);
3112 if (!info->jump_target_got_slot_hash)
3113 info->jump_target_got_slot_hash = g_hash_table_new (NULL, NULL);
3114 list = g_hash_table_lookup (info->jump_target_got_slot_hash, method);
3115 list = g_slist_prepend (list, got_slot);
3116 g_hash_table_insert (info->jump_target_got_slot_hash, method, list);
3117 mono_domain_unlock (domain);
3123 * Load the method identified by METHOD_INDEX from the AOT image. Return a
3124 * pointer to the native code of the method, or NULL if not found.
3125 * METHOD might not be set if the caller only has the image/token info.
3128 load_method (MonoDomain *domain, MonoAotModule *amodule, MonoImage *image, MonoMethod *method, guint32 token, int method_index)
3131 gboolean from_plt = method == NULL;
3133 int i, pindex, n_patches, used_strings;
3134 gboolean keep_patches = TRUE;
3136 MonoJitInfo *jinfo = NULL;
3137 guint8 *code, *info;
3139 if (mono_profiler_get_events () & MONO_PROFILE_ENTER_LEAVE)
3142 if ((domain != mono_get_root_domain ()) && (!(amodule->info.opts & MONO_OPT_SHARED)))
3143 /* Non shared AOT code can't be used in other appdomains */
3146 if (amodule->out_of_date)
3149 if (amodule->code_offsets [method_index] == 0xffffffff) {
3150 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
3154 method = mono_get_method (image, token, NULL);
3155 full_name = mono_method_full_name (method, TRUE);
3156 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.", full_name);
3162 code = &amodule->code [amodule->code_offsets [method_index]];
3164 info = &amodule->blob [mono_aot_get_offset (amodule->method_info_offsets, method_index)];
3166 if (amodule->thumb_end && code < amodule->thumb_end && ((amodule->info.flags & MONO_AOT_FILE_FLAG_DIRECT_METHOD_ADDRESSES) == 0)) {
3167 /* Convert this into a thumb address */
3168 g_assert ((amodule->code_offsets [method_index] & 0x1) == 0);
3169 code = &amodule->code [amodule->code_offsets [method_index] + 1];
3173 if (!amodule->methods_loaded)
3174 amodule->methods_loaded = g_new0 (guint32, amodule->info.nmethods / 32 + 1);
3177 if ((amodule->methods_loaded [method_index / 32] >> (method_index % 32)) & 0x1)
3180 if (mono_last_aot_method != -1) {
3181 if (mono_jit_stats.methods_aot >= mono_last_aot_method)
3183 else if (mono_jit_stats.methods_aot == mono_last_aot_method - 1) {
3185 method = mono_get_method (image, token, NULL);
3187 char *name = mono_method_full_name (method, TRUE);
3188 printf ("LAST AOT METHOD: %s.\n", name);
3191 printf ("LAST AOT METHOD: %p %d\n", code, method_index);
3199 klass = method->klass;
3200 decode_klass_ref (amodule, p, &p);
3202 klass = decode_klass_ref (amodule, p, &p);
3205 if (amodule->info.opts & MONO_OPT_SHARED)
3206 used_strings = decode_value (p, &p);
3210 for (i = 0; i < used_strings; i++) {
3211 guint token = decode_value (p, &p);
3212 mono_ldstr (mono_get_root_domain (), image, mono_metadata_token_index (token));
3215 if (amodule->info.opts & MONO_OPT_SHARED)
3216 keep_patches = FALSE;
3218 n_patches = decode_value (p, &p);
3220 keep_patches = FALSE;
3223 MonoJumpInfo *patches;
3229 mp = mono_mempool_new ();
3231 patches = load_patch_info (amodule, mp, n_patches, &got_slots, p, &p);
3232 if (patches == NULL)
3235 for (pindex = 0; pindex < n_patches; ++pindex) {
3236 MonoJumpInfo *ji = &patches [pindex];
3238 if (!amodule->got [got_slots [pindex]]) {
3239 amodule->got [got_slots [pindex]] = mono_resolve_patch_target (method, domain, code, ji, TRUE);
3240 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
3241 amodule->got [got_slots [pindex]] = mono_create_ftnptr (domain, amodule->got [got_slots [pindex]]);
3242 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
3243 register_jump_target_got_slot (domain, ji->data.method, &(amodule->got [got_slots [pindex]]));
3245 ji->type = MONO_PATCH_INFO_NONE;
3251 mono_mempool_destroy (mp);
3254 if (mini_get_debug_options ()->load_aot_jit_info_eagerly)
3255 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
3257 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
3261 method = mono_get_method (image, token, NULL);
3263 full_name = mono_method_full_name (method, TRUE);
3266 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
3268 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT FOUND method %s [%p - %p %p]", full_name, code, code + jinfo->code_size, info);
3274 InterlockedIncrement (&mono_jit_stats.methods_aot);
3276 amodule->methods_loaded [method_index / 32] |= 1 << (method_index % 32);
3280 if (method && method->wrapper_type)
3281 g_hash_table_insert (amodule->method_to_code, method, code);
3285 if (mono_profiler_get_events () & MONO_PROFILE_JIT_COMPILATION) {
3289 method = mono_get_method (image, token, NULL);
3292 mono_profiler_method_jit (method);
3293 jinfo = mono_jit_info_table_find (domain, (char*)code);
3295 mono_profiler_method_end_jit (method, jinfo, MONO_PROFILE_OK);
3298 if (from_plt && klass && !klass->generic_container)
3299 mono_runtime_class_init (mono_class_vtable (domain, klass));
3304 /* FIXME: The space in domain->mp is wasted */
3305 if (amodule->info.opts & MONO_OPT_SHARED)
3306 /* No need to cache patches */
3307 mono_mempool_destroy (mp);
3316 find_extra_method_in_amodule (MonoAotModule *amodule, MonoMethod *method)
3318 guint32 table_size, entry_size, hash;
3319 guint32 *table, *entry;
3321 static guint32 n_extra_decodes;
3323 if (!amodule || amodule->out_of_date)
3326 table_size = amodule->extra_method_table [0];
3327 table = amodule->extra_method_table + 1;
3330 hash = mono_aot_method_hash (method) % table_size;
3332 entry = &table [hash * entry_size];
3339 guint32 key = entry [0];
3340 guint32 value = entry [1];
3341 guint32 next = entry [entry_size - 1];
3345 p = amodule->blob + key;
3349 if (!amodule->method_ref_to_method)
3350 amodule->method_ref_to_method = g_hash_table_new (NULL, NULL);
3351 m = g_hash_table_lookup (amodule->method_ref_to_method, p);
3354 m = decode_resolve_method_ref_with_target (amodule, method, p, &p);
3357 g_hash_table_insert (amodule->method_ref_to_method, orig_p, m);
3366 /* Special case: wrappers of shared generic methods */
3367 if (m && method->wrapper_type && m->wrapper_type == m->wrapper_type &&
3368 method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
3369 MonoMethod *w1 = mono_marshal_method_from_wrapper (method);
3370 MonoMethod *w2 = mono_marshal_method_from_wrapper (m);
3372 if (w1->is_inflated && ((MonoMethodInflated *)w1)->declaring == w2) {
3378 /* Methods decoded needlessly */
3380 //printf ("%d %s %s %p\n", n_extra_decodes, mono_method_full_name (method, TRUE), mono_method_full_name (m, TRUE), orig_p);
3385 entry = &table [next * entry_size];
3394 add_module_cb (gpointer key, gpointer value, gpointer user_data)
3396 g_ptr_array_add ((GPtrArray*)user_data, value);
3400 * find_extra_method:
3402 * Try finding METHOD in the extra_method table in all AOT images.
3403 * Return its method index, or 0xffffff if not found. Set OUT_AMODULE to the AOT
3404 * module where the method was found.
3407 find_extra_method (MonoMethod *method, MonoAotModule **out_amodule)
3413 /* Try the method's module first */
3414 *out_amodule = method->klass->image->aot_module;
3415 index = find_extra_method_in_amodule (method->klass->image->aot_module, method);
3416 if (index != 0xffffff)
3420 * Try all other modules.
3421 * This is needed because generic instances klass->image points to the image
3422 * containing the generic definition, but the native code is generated to the
3423 * AOT image which contains the reference.
3426 /* Make a copy to avoid doing the search inside the aot lock */
3427 modules = g_ptr_array_new ();
3429 g_hash_table_foreach (aot_modules, add_module_cb, modules);
3433 for (i = 0; i < modules->len; ++i) {
3434 MonoAotModule *amodule = g_ptr_array_index (modules, i);
3436 if (amodule != method->klass->image->aot_module)
3437 index = find_extra_method_in_amodule (amodule, method);
3438 if (index != 0xffffff) {
3439 *out_amodule = amodule;
3444 g_ptr_array_free (modules, TRUE);
3450 * mono_aot_get_method:
3452 * Return a pointer to the AOTed native code for METHOD if it can be found,
3454 * On platforms with function pointers, this doesn't return a function pointer.
3457 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
3459 MonoClass *klass = method->klass;
3460 guint32 method_index;
3461 MonoAotModule *amodule = klass->image->aot_module;
3467 if (amodule->out_of_date)
3470 if ((method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
3471 (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
3472 (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
3473 (method->flags & METHOD_ATTRIBUTE_ABSTRACT))
3477 * Use the original method instead of its invoke-with-check wrapper.
3478 * This is not a problem when using full-aot, since it doesn't support
3481 if (mono_aot_only && method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)
3482 return mono_aot_get_method (domain, mono_marshal_method_from_wrapper (method));
3484 g_assert (klass->inited);
3486 /* Find method index */
3487 method_index = 0xffffff;
3488 if (method->is_inflated && !method->wrapper_type && mono_method_is_generic_sharable_full (method, FALSE, FALSE, FALSE)) {
3490 * For generic methods, we store the fully shared instance in place of the
3493 method = mono_method_get_declaring_generic_method (method);
3494 method_index = mono_metadata_token_index (method->token) - 1;
3495 } else if (method->is_inflated || !method->token) {
3496 /* This hash table is used to avoid the slower search in the extra_method_table in the AOT image */
3498 code = g_hash_table_lookup (amodule->method_to_code, method);
3503 method_index = find_extra_method (method, &amodule);
3505 * Special case the ICollection<T> wrappers for arrays, as they cannot
3506 * be statically enumerated, and each wrapper ends up calling the same
3509 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED && method->klass->rank && strstr (method->name, "System.Collections.Generic")) {
3510 MonoMethod *m = mono_aot_get_array_helper_from_wrapper (method);
3512 code = mono_aot_get_method (domain, m);
3514 if (mono_method_needs_static_rgctx_invoke (m, FALSE)) {
3515 code = mono_create_static_rgctx_trampoline (m, mono_create_ftnptr (domain, code));
3516 /* The call above returns an ftnptr */
3517 code = mono_get_addr_from_ftnptr (code);
3525 * Special case Array.GetGenericValueImpl which is a generic icall.
3526 * Generic sharing currently can't handle it, but the icall returns data using
3527 * an out parameter, so the managed-to-native wrappers can share the same code.
3529 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass == mono_defaults.array_class && !strcmp (method->name, "GetGenericValueImpl")) {
3531 MonoGenericContext ctx;
3532 MonoType *args [16];
3534 if (mono_method_signature (method)->params [1]->type == MONO_TYPE_OBJECT)
3535 /* Avoid recursion */
3538 m = mono_class_get_method_from_name (mono_defaults.array_class, "GetGenericValueImpl", 2);
3541 memset (&ctx, 0, sizeof (ctx));
3542 args [0] = &mono_defaults.object_class->byval_arg;
3543 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
3545 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method (m, &ctx), TRUE, TRUE);
3548 * Get the code for the <object> instantiation which should be emitted into
3549 * the mscorlib aot image by the AOT compiler.
3551 code = mono_aot_get_method (domain, m);
3556 /* Same for CompareExchange<T> and Exchange<T> */
3557 /* Same for Volatile.Read<T>/Write<T> */
3558 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass->image == mono_defaults.corlib &&
3559 ((!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])) ||
3560 (!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))) ||
3561 (!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]))))) {
3563 MonoGenericContext ctx;
3564 MonoType *args [16];
3565 gpointer iter = NULL;
3567 while ((m = mono_class_get_methods (method->klass, &iter))) {
3568 if (mono_method_signature (m)->generic_param_count && !strcmp (m->name, method->name))
3573 memset (&ctx, 0, sizeof (ctx));
3574 args [0] = &mono_defaults.object_class->byval_arg;
3575 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
3577 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method (m, &ctx), TRUE, TRUE);
3579 /* Avoid recursion */
3584 * Get the code for the <object> instantiation which should be emitted into
3585 * the mscorlib aot image by the AOT compiler.
3587 code = mono_aot_get_method (domain, m);
3592 if (method_index == 0xffffff && method->is_inflated && mono_method_is_generic_sharable_full (method, FALSE, TRUE, FALSE)) {
3593 /* Partial sharing */
3596 shared = mini_get_shared_method (method);
3597 method_index = find_extra_method (shared, &amodule);
3598 if (method_index != 0xffffff)
3602 if (method_index == 0xffffff && method->is_inflated && mono_method_is_generic_sharable_full (method, FALSE, FALSE, TRUE)) {
3604 /* Use the all-vt shared method since this is what was AOTed */
3605 method_index = find_extra_method (mini_get_shared_method_full (method, TRUE, TRUE), &amodule);
3606 if (method_index != 0xffffff)
3607 method = mini_get_shared_method_full (method, TRUE, FALSE);
3610 if (method_index == 0xffffff) {
3611 if (mono_aot_only && mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
3614 full_name = mono_method_full_name (method, TRUE);
3615 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.\n", full_name);
3621 if (method_index == 0xffffff)
3624 /* Needed by find_jit_info */
3626 if (!amodule->extra_methods)
3627 amodule->extra_methods = g_hash_table_new (NULL, NULL);
3628 g_hash_table_insert (amodule->extra_methods, GUINT_TO_POINTER (method_index), method);
3632 method_index = mono_metadata_token_index (method->token) - 1;
3635 return load_method (domain, amodule, klass->image, method, method->token, method_index);
3639 * Same as mono_aot_get_method, but we try to avoid loading any metadata from the
3643 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
3645 MonoAotModule *aot_module = image->aot_module;
3651 method_index = mono_metadata_token_index (token) - 1;
3653 return load_method (domain, aot_module, image, NULL, token, method_index);
3659 } IsGotEntryUserData;
3662 check_is_got_entry (gpointer key, gpointer value, gpointer user_data)
3664 IsGotEntryUserData *data = (IsGotEntryUserData*)user_data;
3665 MonoAotModule *aot_module = (MonoAotModule*)value;
3667 if (aot_module->got && (data->addr >= (guint8*)(aot_module->got)) && (data->addr < (guint8*)(aot_module->got + aot_module->info.got_size)))
3672 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
3674 IsGotEntryUserData user_data;
3679 user_data.addr = addr;
3680 user_data.res = FALSE;
3682 g_hash_table_foreach (aot_modules, check_is_got_entry, &user_data);
3685 return user_data.res;
3690 MonoAotModule *module;
3691 } FindAotModuleUserData;
3694 find_aot_module_cb (gpointer key, gpointer value, gpointer user_data)
3696 FindAotModuleUserData *data = (FindAotModuleUserData*)user_data;
3697 MonoAotModule *aot_module = (MonoAotModule*)value;
3699 if ((data->addr >= (guint8*)(aot_module->code)) && (data->addr < (guint8*)(aot_module->code_end)))
3700 data->module = aot_module;
3703 static inline MonoAotModule*
3704 find_aot_module (guint8 *code)
3706 FindAotModuleUserData user_data;
3711 /* Reading these need no locking */
3712 if (((gsize)code < aot_code_low_addr) || ((gsize)code > aot_code_high_addr))
3715 user_data.addr = code;
3716 user_data.module = NULL;
3719 g_hash_table_foreach (aot_modules, find_aot_module_cb, &user_data);
3722 return user_data.module;
3726 mono_aot_patch_plt_entry (guint8 *code, gpointer *got, mgreg_t *regs, guint8 *addr)
3729 * Since AOT code is only used in the root domain,
3730 * mono_domain_get () != mono_get_root_domain () means the calling method
3731 * is AppDomain:InvokeInDomain, so this is the same check as in
3732 * mono_method_same_domain () but without loading the metadata for the method.
3734 if (mono_domain_get () == mono_get_root_domain ())
3735 mono_arch_patch_plt_entry (code, got, regs, addr);
3739 * mono_aot_plt_resolve:
3741 * This function is called by the entries in the PLT to resolve the actual method that
3742 * needs to be called. It returns a trampoline to the method and patches the PLT entry.
3743 * Returns NULL if the something cannot be loaded.
3746 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
3748 #ifdef MONO_ARCH_AOT_SUPPORTED
3749 guint8 *p, *target, *plt_entry;
3751 MonoAotModule *module = (MonoAotModule*)aot_module;
3752 gboolean res, no_ftnptr = FALSE;
3754 gboolean using_gsharedvt = FALSE;
3756 //printf ("DYN: %p %d\n", aot_module, plt_info_offset);
3758 p = &module->blob [plt_info_offset];
3760 ji.type = decode_value (p, &p);
3762 mp = mono_mempool_new_size (512);
3763 res = decode_patch (module, mp, &ji, p, &p);
3766 mono_mempool_destroy (mp);
3770 #ifdef MONO_ARCH_GSHAREDVT_SUPPORTED
3771 using_gsharedvt = TRUE;
3775 * Avoid calling resolve_patch_target in the full-aot case if possible, since
3776 * it would create a trampoline, and we don't need that.
3777 * We could do this only if the method does not need the special handling
3778 * in mono_magic_trampoline ().
3780 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) &&
3781 !mono_method_needs_static_rgctx_invoke (ji.data.method, FALSE) && !using_gsharedvt) {
3782 target = mono_jit_compile_method (ji.data.method);
3785 target = mono_resolve_patch_target (NULL, mono_domain_get (), NULL, &ji, TRUE);
3789 * The trampoline expects us to return a function descriptor on platforms which use
3790 * it, but resolve_patch_target returns a direct function pointer for some type of
3791 * patches, so have to translate between the two.
3792 * FIXME: Clean this up, but how ?
3794 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) {
3795 /* These should already have a function descriptor */
3796 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3797 /* Our function descriptors have a 0 environment, gcc created ones don't */
3798 if (ji.type != MONO_PATCH_INFO_INTERNAL_METHOD && ji.type != MONO_PATCH_INFO_JIT_ICALL_ADDR && ji.type != MONO_PATCH_INFO_ICALL_ADDR)
3799 g_assert (((gpointer*)target) [2] == 0);
3802 } else if (!no_ftnptr) {
3803 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3804 g_assert (((gpointer*)target) [2] != 0);
3806 target = mono_create_ftnptr (mono_domain_get (), target);
3809 mono_mempool_destroy (mp);
3811 /* Patch the PLT entry with target which might be the actual method not a trampoline */
3812 plt_entry = mono_aot_get_plt_entry (code);
3813 g_assert (plt_entry);
3814 mono_aot_patch_plt_entry (plt_entry, module->got, NULL, target);
3818 g_assert_not_reached ();
3826 * Initialize the PLT table of the AOT module. Called lazily when the first AOT
3827 * method in the module is loaded to avoid committing memory by writing to it.
3828 * LOCKING: Assumes the AOT lock is held.
3831 init_plt (MonoAotModule *amodule)
3836 if (amodule->plt_inited)
3839 tramp = mono_create_specific_trampoline (amodule, MONO_TRAMPOLINE_AOT_PLT, mono_get_root_domain (), NULL);
3842 * Initialize the PLT entries in the GOT to point to the default targets.
3845 tramp = mono_create_ftnptr (mono_domain_get (), tramp);
3846 for (i = 1; i < amodule->info.plt_size; ++i)
3847 /* All the default entries point to the AOT trampoline */
3848 ((gpointer*)amodule->got)[amodule->info.plt_got_offset_base + i] = tramp;
3850 amodule->plt_inited = TRUE;
3854 * mono_aot_get_plt_entry:
3856 * Return the address of the PLT entry called by the code at CODE if exists.
3859 mono_aot_get_plt_entry (guint8 *code)
3861 MonoAotModule *amodule = find_aot_module (code);
3862 guint8 *target = NULL;
3868 if (amodule->thumb_end && code < amodule->thumb_end) {
3869 return mono_arm_get_thumb_plt_entry (code);
3873 #ifdef MONO_ARCH_AOT_SUPPORTED
3874 target = mono_arch_get_call_target (code);
3876 g_assert_not_reached ();
3880 while (target != NULL) {
3881 if ((target >= (guint8*)(amodule->plt)) && (target < (guint8*)(amodule->plt_end)))
3884 // Add 4 since mono_arch_get_call_target assumes we're passing
3885 // the instruction after the actual branch instruction.
3886 target = mono_arch_get_call_target (target + 4);
3891 if ((target >= (guint8*)(amodule->plt)) && (target < (guint8*)(amodule->plt_end)))
3899 * mono_aot_get_plt_info_offset:
3901 * Return the PLT info offset belonging to the plt entry called by CODE.
3904 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
3906 guint8 *plt_entry = mono_aot_get_plt_entry (code);
3908 g_assert (plt_entry);
3910 /* The offset is embedded inside the code after the plt entry */
3911 #ifdef MONO_ARCH_AOT_SUPPORTED
3912 return mono_arch_get_plt_info_offset (plt_entry, regs, code);
3914 g_assert_not_reached ();
3920 mono_create_ftnptr_malloc (guint8 *code)
3922 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3923 MonoPPCFunctionDescriptor *ftnptr = g_malloc0 (sizeof (MonoPPCFunctionDescriptor));
3925 ftnptr->code = code;
3936 * mono_aot_register_jit_icall:
3938 * Register a JIT icall which is called by trampolines in full-aot mode. This should
3939 * be called from mono_arch_init () during startup.
3942 mono_aot_register_jit_icall (const char *name, gpointer addr)
3944 /* No need for locking */
3945 if (!aot_jit_icall_hash)
3946 aot_jit_icall_hash = g_hash_table_new (g_str_hash, g_str_equal);
3947 g_hash_table_insert (aot_jit_icall_hash, (char*)name, addr);
3951 * load_function_full:
3953 * Load the function named NAME from the aot image.
3956 load_function_full (MonoAotModule *amodule, const char *name, MonoTrampInfo **out_tinfo)
3960 int n_patches, pindex;
3963 guint32 info_offset;
3967 symbol = g_strdup_printf ("%s", name);
3968 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&code);
3971 g_error ("Symbol '%s' not found in AOT file '%s'.\n", name, amodule->aot_name);
3973 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT FOUND function '%s' in AOT file '%s'.", name, amodule->aot_name);
3977 symbol = g_strdup_printf ("%s_p", name);
3978 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&p);
3981 /* Nothing to patch */
3984 info_offset = *(guint32*)p;
3986 MonoTrampInfo *tinfo;
3987 guint32 code_size, uw_info_len, uw_offset;
3989 /* Construct a MonoTrampInfo from the data in the AOT image */
3991 p += sizeof (guint32);
3992 code_size = *(guint32*)p;
3993 p += sizeof (guint32);
3994 uw_offset = *(guint32*)p;
3995 uw_info = amodule->unwind_info + uw_offset;
3996 uw_info_len = decode_value (uw_info, &uw_info);
3998 tinfo = g_new0 (MonoTrampInfo, 1);
4000 tinfo->code_size = code_size;
4001 tinfo->uw_info = uw_info;
4002 tinfo->uw_info_len = uw_info_len;
4007 p = amodule->blob + info_offset;
4009 /* Similar to mono_aot_load_method () */
4011 n_patches = decode_value (p, &p);
4014 MonoJumpInfo *patches;
4017 mp = mono_mempool_new ();
4019 patches = load_patch_info (amodule, mp, n_patches, &got_slots, p, &p);
4022 for (pindex = 0; pindex < n_patches; ++pindex) {
4023 MonoJumpInfo *ji = &patches [pindex];
4026 if (amodule->got [got_slots [pindex]])
4030 * When this code is executed, the runtime may not be initalized yet, so
4031 * resolve the patch info by hand.
4033 if (ji->type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
4034 if (!strcmp (ji->data.name, "mono_get_lmf_addr")) {
4035 target = mono_get_lmf_addr;
4036 } else if (!strcmp (ji->data.name, "mono_thread_force_interruption_checkpoint")) {
4037 target = mono_thread_force_interruption_checkpoint;
4038 } else if (!strcmp (ji->data.name, "mono_exception_from_token")) {
4039 target = mono_exception_from_token;
4040 } else if (!strcmp (ji->data.name, "mono_throw_exception")) {
4041 target = mono_get_throw_exception ();
4042 } else if (strstr (ji->data.name, "trampoline_func_") == ji->data.name) {
4043 int tramp_type2 = atoi (ji->data.name + strlen ("trampoline_func_"));
4044 target = (gpointer)mono_get_trampoline_func (tramp_type2);
4045 } else if (strstr (ji->data.name, "specific_trampoline_lazy_fetch_") == ji->data.name) {
4046 /* atoll is needed because the the offset is unsigned */
4050 res = sscanf (ji->data.name, "specific_trampoline_lazy_fetch_%u", &slot);
4051 g_assert (res == 1);
4052 target = mono_create_specific_trampoline (GUINT_TO_POINTER (slot), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, mono_get_root_domain (), NULL);
4053 target = mono_create_ftnptr_malloc (target);
4054 } else if (!strcmp (ji->data.name, "specific_trampoline_monitor_enter")) {
4055 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_MONITOR_ENTER, mono_get_root_domain (), NULL);
4056 target = mono_create_ftnptr_malloc (target);
4057 } else if (!strcmp (ji->data.name, "specific_trampoline_monitor_exit")) {
4058 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_MONITOR_EXIT, mono_get_root_domain (), NULL);
4059 target = mono_create_ftnptr_malloc (target);
4060 } else if (!strcmp (ji->data.name, "specific_trampoline_generic_class_init")) {
4061 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_GENERIC_CLASS_INIT, mono_get_root_domain (), NULL);
4062 target = mono_create_ftnptr_malloc (target);
4063 } else if (!strcmp (ji->data.name, "mono_thread_get_and_clear_pending_exception")) {
4064 target = mono_thread_get_and_clear_pending_exception;
4065 } else if (strstr (ji->data.name, "generic_trampoline_")) {
4066 target = mono_aot_get_trampoline (ji->data.name);
4067 } else if (aot_jit_icall_hash && g_hash_table_lookup (aot_jit_icall_hash, ji->data.name)) {
4068 /* Registered by mono_arch_init () */
4069 target = g_hash_table_lookup (aot_jit_icall_hash, ji->data.name);
4071 fprintf (stderr, "Unknown relocation '%s'\n", ji->data.name);
4072 g_assert_not_reached ();
4076 /* Hopefully the code doesn't have patches which need method or
4079 target = mono_resolve_patch_target (NULL, NULL, code, ji, FALSE);
4083 amodule->got [got_slots [pindex]] = target;
4088 mono_mempool_destroy (mp);
4095 load_function (MonoAotModule *amodule, const char *name)
4097 return load_function_full (amodule, name, NULL);
4101 * Return the trampoline identified by NAME from the mscorlib AOT file.
4102 * On ppc64, this returns a function descriptor.
4105 mono_aot_get_trampoline_full (const char *name, MonoTrampInfo **out_tinfo)
4108 MonoAotModule *amodule;
4110 image = mono_defaults.corlib;
4113 amodule = image->aot_module;
4116 return mono_create_ftnptr_malloc (load_function_full (amodule, name, out_tinfo));
4120 mono_aot_get_trampoline (const char *name)
4122 return mono_aot_get_trampoline_full (name, NULL);
4126 #include <mach/mach.h>
4128 static TrampolinePage* trampoline_pages [MONO_AOT_TRAMP_NUM];
4129 /* these sizes are for ARM code, parametrize if porting to other architectures (see arch_emit_specific_trampoline_pages)
4130 * trampoline size is assumed to be 8 bytes below as well (8 is the minimum for 32 bit archs, since we need to store
4131 * two pointers for trampoline in the data page).
4132 * the minimum for the common code must be at least sizeof(TrampolinePage), since we store the page info at the
4133 * beginning of the data page.
4135 static const int trampolines_pages_code_offsets [MONO_AOT_TRAMP_NUM] = {16, 16, 72, 16};
4137 static unsigned char*
4138 get_new_trampoline_from_page (int tramp_type)
4140 MonoAotModule *amodule;
4142 TrampolinePage *page;
4145 vm_address_t addr, taddr;
4147 vm_prot_t prot, max_prot;
4149 unsigned char *code;
4151 mono_aot_page_lock ();
4152 page = trampoline_pages [tramp_type];
4153 if (page && page->trampolines < page->trampolines_end) {
4154 code = page->trampolines;
4155 page->trampolines += 8;
4156 mono_aot_page_unlock ();
4159 mono_aot_page_unlock ();
4160 psize = mono_pagesize ();
4161 /* the trampoline template page is in the mscorlib module */
4162 image = mono_defaults.corlib;
4165 amodule = image->aot_module;
4168 if (tramp_type == MONO_AOT_TRAMP_SPECIFIC)
4169 tpage = load_function (amodule, "specific_trampolines_page");
4170 else if (tramp_type == MONO_AOT_TRAMP_STATIC_RGCTX)
4171 tpage = load_function (amodule, "rgctx_trampolines_page");
4172 else if (tramp_type == MONO_AOT_TRAMP_IMT_THUNK)
4173 tpage = load_function (amodule, "imt_trampolines_page");
4174 else if (tramp_type == MONO_AOT_TRAMP_GSHAREDVT_ARG)
4175 tpage = load_function (amodule, "gsharedvt_arg_trampolines_page");
4177 g_error ("Incorrect tramp type for trampolines page");
4179 /*g_warning ("loaded trampolines page at %x", tpage);*/
4181 /* avoid the unlikely case of looping forever */
4184 while (page == NULL && count-- > 0) {
4186 /* allocate two contiguous pages of memory: the first page will contain the data (like a local constant pool)
4187 * while the second will contain the trampolines.
4189 ret = vm_allocate (mach_task_self (), &addr, psize * 2, VM_FLAGS_ANYWHERE);
4190 if (ret != KERN_SUCCESS) {
4191 g_error ("Cannot allocate memory for trampolines: %d", ret);
4194 /*g_warning ("allocated trampoline double page at %x", addr);*/
4195 /* replace the second page with a remapped trampoline page */
4196 taddr = addr + psize;
4197 vm_deallocate (mach_task_self (), taddr, psize);
4198 ret = vm_remap (mach_task_self (), &taddr, psize, 0, FALSE, mach_task_self(), (vm_address_t)tpage, FALSE, &prot, &max_prot, VM_INHERIT_SHARE);
4199 if (ret != KERN_SUCCESS) {
4200 /* someone else got the page, try again */
4201 vm_deallocate (mach_task_self (), addr, psize);
4204 /*g_warning ("remapped trampoline page at %x", taddr);*/
4206 mono_aot_page_lock ();
4207 page = trampoline_pages [tramp_type];
4208 /* some other thread already allocated, so use that to avoid wasting memory */
4209 if (page && page->trampolines < page->trampolines_end) {
4210 code = page->trampolines;
4211 page->trampolines += 8;
4212 mono_aot_page_unlock ();
4213 vm_deallocate (mach_task_self (), addr, psize);
4214 vm_deallocate (mach_task_self (), taddr, psize);
4217 page = (TrampolinePage*)addr;
4218 page->next = trampoline_pages [tramp_type];
4219 trampoline_pages [tramp_type] = page;
4220 page->trampolines = (void*)(taddr + trampolines_pages_code_offsets [tramp_type]);
4221 page->trampolines_end = (void*)(taddr + psize);
4222 code = page->trampolines;
4223 page->trampolines += 8;
4224 mono_aot_page_unlock ();
4227 g_error ("Cannot allocate more trampoline pages: %d", ret);
4232 static unsigned char*
4233 get_new_trampoline_from_page (int tramp_type)
4235 g_error ("Page trampolines not supported.");
4242 get_new_specific_trampoline_from_page (gpointer tramp, gpointer arg)
4247 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_SPECIFIC);
4249 data = (gpointer*)((char*)code - mono_pagesize ());
4252 /*g_warning ("new trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
4258 get_new_rgctx_trampoline_from_page (gpointer tramp, gpointer arg)
4263 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_STATIC_RGCTX);
4265 data = (gpointer*)((char*)code - mono_pagesize ());
4268 /*g_warning ("new rgctx trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
4274 get_new_imt_trampoline_from_page (gpointer arg)
4279 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_IMT_THUNK);
4281 data = (gpointer*)((char*)code - mono_pagesize ());
4283 /*g_warning ("new imt trampoline at %p for data %p, (stored at %p)", code, arg, data);*/
4289 get_new_gsharedvt_arg_trampoline_from_page (gpointer tramp, gpointer arg)
4294 code = get_new_trampoline_from_page (MONO_AOT_TRAMP_GSHAREDVT_ARG);
4296 data = (gpointer*)((char*)code - mono_pagesize ());
4299 /*g_warning ("new rgctx trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/
4303 /* Return a given kind of trampoline */
4305 get_numerous_trampoline (MonoAotTrampoline tramp_type, int n_got_slots, MonoAotModule **out_amodule, guint32 *got_offset, guint32 *out_tramp_size)
4307 MonoAotModule *amodule;
4308 int index, tramp_size;
4311 /* Currently, we keep all trampolines in the mscorlib AOT image */
4312 image = mono_defaults.corlib;
4317 amodule = image->aot_module;
4320 *out_amodule = amodule;
4323 #define MONOTOUCH_TRAMPOLINES_ERROR ". See http://docs.xamarin.com/ios/troubleshooting for instruction on how to fix this condition"
4325 #define MONOTOUCH_TRAMPOLINES_ERROR ""
4327 if (amodule->trampoline_index [tramp_type] == amodule->info.num_trampolines [tramp_type]) {
4328 g_error ("Ran out of trampolines of type %d in '%s' (%d)%s\n",
4329 tramp_type, image->name, amodule->info.num_trampolines [tramp_type], MONOTOUCH_TRAMPOLINES_ERROR);
4331 index = amodule->trampoline_index [tramp_type] ++;
4335 *got_offset = amodule->info.trampoline_got_offset_base [tramp_type] + (index * n_got_slots);
4337 tramp_size = amodule->info.trampoline_size [tramp_type];
4340 *out_tramp_size = tramp_size;
4342 return amodule->trampolines [tramp_type] + (index * tramp_size);
4346 * Return a specific trampoline from the AOT file.
4349 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
4351 MonoAotModule *amodule;
4352 guint32 got_offset, tramp_size;
4353 guint8 *code, *tramp;
4354 static gpointer generic_trampolines [MONO_TRAMPOLINE_NUM];
4355 static gboolean inited;
4356 static guint32 num_trampolines;
4362 mono_counters_register ("Specific trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &num_trampolines);
4371 if (!generic_trampolines [tramp_type]) {
4374 symbol = mono_get_generic_trampoline_name (tramp_type);
4375 generic_trampolines [tramp_type] = mono_aot_get_trampoline (symbol);
4379 tramp = generic_trampolines [tramp_type];
4382 if (USE_PAGE_TRAMPOLINES) {
4383 code = get_new_specific_trampoline_from_page (tramp, arg1);
4386 code = get_numerous_trampoline (MONO_AOT_TRAMP_SPECIFIC, 2, &amodule, &got_offset, &tramp_size);
4388 amodule->got [got_offset] = tramp;
4389 amodule->got [got_offset + 1] = arg1;
4393 *code_len = tramp_size;
4399 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
4401 MonoAotModule *amodule;
4405 if (USE_PAGE_TRAMPOLINES) {
4406 code = get_new_rgctx_trampoline_from_page (addr, ctx);
4408 code = get_numerous_trampoline (MONO_AOT_TRAMP_STATIC_RGCTX, 2, &amodule, &got_offset, NULL);
4410 amodule->got [got_offset] = ctx;
4411 amodule->got [got_offset + 1] = addr;
4414 /* The caller expects an ftnptr */
4415 return mono_create_ftnptr (mono_domain_get (), code);
4419 mono_aot_get_unbox_trampoline (MonoMethod *method)
4421 guint32 method_index = mono_metadata_token_index (method->token) - 1;
4422 MonoAotModule *amodule;
4424 guint32 *ut, *ut_end, *entry;
4425 int low, high, entry_index;
4427 if (method->is_inflated && !mono_method_is_generic_sharable_full (method, FALSE, FALSE, FALSE)) {
4428 method_index = find_extra_method (method, &amodule);
4429 if (method_index == 0xffffff && mono_method_is_generic_sharable_full (method, FALSE, FALSE, TRUE)) {
4430 MonoMethod *shared = mini_get_shared_method_full (method, TRUE, TRUE);
4431 method_index = find_extra_method (shared, &amodule);
4433 g_assert (method_index != 0xffffff);
4435 amodule = method->klass->image->aot_module;
4439 ut = amodule->unbox_trampolines;
4440 ut_end = amodule->unbox_trampolines_end;
4442 /* Do a binary search in the sorted table */
4445 high = (ut_end - ut) / 2;
4446 while (low < high) {
4447 entry_index = (low + high) / 2;
4448 entry = &ut [(entry_index * 2)];
4449 if (entry [0] < method_index) {
4450 low = entry_index + 1;
4451 } else if (entry [0] > method_index) {
4454 if (amodule->info.flags & MONO_AOT_FILE_FLAG_DIRECT_METHOD_ADDRESSES)
4455 code = get_arm_bl_target (entry + 1);
4457 code = amodule->code + entry [1];
4463 /* The caller expects an ftnptr */
4464 return mono_create_ftnptr (mono_domain_get (), code);
4468 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
4472 MonoAotModule *amodule = mono_defaults.corlib->aot_module;
4473 guint32 index = MONO_RGCTX_SLOT_INDEX (slot);
4474 static int count = 0;
4477 if (index >= amodule->info.num_rgctx_fetch_trampolines) {
4478 static gpointer addr;
4482 * Use the general version of the rgctx fetch trampoline. It receives a pair of <slot, trampoline> in the rgctx arg reg.
4485 addr = load_function (amodule, "rgctx_fetch_trampoline_general");
4486 info = mono_domain_alloc0 (mono_get_root_domain (), sizeof (gpointer) * 2);
4487 info [0] = GUINT_TO_POINTER (slot);
4488 info [1] = mono_create_specific_trampoline (GUINT_TO_POINTER (slot), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, mono_get_root_domain (), NULL);
4489 code = mono_aot_get_static_rgctx_trampoline (info, addr);
4490 return mono_create_ftnptr (mono_domain_get (), code);
4493 symbol = mono_get_rgctx_fetch_trampoline_name (slot);
4494 code = load_function (mono_defaults.corlib->aot_module, symbol);
4496 /* The caller expects an ftnptr */
4497 return mono_create_ftnptr (mono_domain_get (), code);
4501 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
4506 int i, index, real_count;
4507 MonoAotModule *amodule;
4510 for (i = 0; i < count; ++i) {
4511 MonoIMTCheckItem *item = imt_entries [i];
4513 if (item->is_equals)
4517 /* Save the entries into an array */
4518 buf = mono_domain_alloc (domain, (real_count + 1) * 2 * sizeof (gpointer));
4520 for (i = 0; i < count; ++i) {
4521 MonoIMTCheckItem *item = imt_entries [i];
4523 if (!item->is_equals)
4526 g_assert (item->key);
4528 buf [(index * 2)] = item->key;
4529 if (item->has_target_code) {
4530 gpointer *p = mono_domain_alloc (domain, sizeof (gpointer));
4531 *p = item->value.target_code;
4532 buf [(index * 2) + 1] = p;
4534 buf [(index * 2) + 1] = &(vtable->vtable [item->value.vtable_slot]);
4538 buf [(index * 2)] = NULL;
4539 buf [(index * 2) + 1] = fail_tramp;
4541 if (USE_PAGE_TRAMPOLINES) {
4542 code = get_new_imt_trampoline_from_page (buf);
4544 code = get_numerous_trampoline (MONO_AOT_TRAMP_IMT_THUNK, 1, &amodule, &got_offset, NULL);
4546 amodule->got [got_offset] = buf;
4553 mono_aot_get_gsharedvt_arg_trampoline (gpointer arg, gpointer addr)
4555 MonoAotModule *amodule;
4559 if (USE_PAGE_TRAMPOLINES) {
4560 code = get_new_gsharedvt_arg_trampoline_from_page (addr, arg);
4562 code = get_numerous_trampoline (MONO_AOT_TRAMP_GSHAREDVT_ARG, 2, &amodule, &got_offset, NULL);
4564 amodule->got [got_offset] = arg;
4565 amodule->got [got_offset + 1] = addr;
4568 /* The caller expects an ftnptr */
4569 return mono_create_ftnptr (mono_domain_get (), code);
4573 * mono_aot_set_make_unreadable:
4575 * Set whenever to make all mmaped memory unreadable. In conjuction with a
4576 * SIGSEGV handler, this is useful to find out which pages the runtime tries to read.
4579 mono_aot_set_make_unreadable (gboolean unreadable)
4583 make_unreadable = unreadable;
4585 if (make_unreadable && !inited) {
4586 mono_counters_register ("AOT pagefaults", MONO_COUNTER_JIT | MONO_COUNTER_INT, &n_pagefaults);
4591 MonoAotModule *module;
4596 find_map (gpointer key, gpointer value, gpointer user_data)
4598 MonoAotModule *module = (MonoAotModule*)value;
4599 FindMapUserData *data = (FindMapUserData*)user_data;
4602 if ((data->ptr >= module->mem_begin) && (data->ptr < module->mem_end))
4603 data->module = module;
4606 static MonoAotModule*
4607 find_module_for_addr (void *ptr)
4609 FindMapUserData data;
4611 if (!make_unreadable)
4615 data.ptr = (guint8*)ptr;
4618 g_hash_table_foreach (aot_modules, (GHFunc)find_map, &data);
4625 * mono_aot_is_pagefault:
4627 * Should be called from a SIGSEGV signal handler to find out whenever @ptr is
4628 * within memory allocated by this module.
4631 mono_aot_is_pagefault (void *ptr)
4633 if (!make_unreadable)
4637 * Not signal safe, but SIGSEGV's are synchronous, and
4638 * this is only turned on by a MONO_DEBUG option.
4640 return find_module_for_addr (ptr) != NULL;
4644 * mono_aot_handle_pagefault:
4646 * Handle a pagefault caused by an unreadable page by making it readable again.
4649 mono_aot_handle_pagefault (void *ptr)
4651 #ifndef PLATFORM_WIN32
4652 guint8* start = (guint8*)ROUND_DOWN (((gssize)ptr), mono_pagesize ());
4656 res = mono_mprotect (start, mono_pagesize (), MONO_MMAP_READ|MONO_MMAP_WRITE|MONO_MMAP_EXEC);
4657 g_assert (res == 0);
4668 mono_aot_init (void)
4673 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
4679 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
4685 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
4691 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
4697 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
4703 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
4709 mono_aot_get_plt_entry (guint8 *code)
4715 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
4721 mono_aot_patch_plt_entry (guint8 *code, gpointer *got, mgreg_t *regs, guint8 *addr)
4726 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
4732 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
4734 g_assert_not_reached ();
4740 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
4742 g_assert_not_reached ();
4747 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
4749 g_assert_not_reached ();
4754 mono_aot_get_trampoline (const char *name)
4756 g_assert_not_reached ();
4761 mono_aot_get_unbox_trampoline (MonoMethod *method)
4763 g_assert_not_reached ();
4768 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
4770 g_assert_not_reached ();
4775 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
4777 g_assert_not_reached ();
4782 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
4784 g_assert_not_reached ();
4789 mono_aot_register_jit_icall (const char *name, gpointer addr)