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.
12 #include <sys/types.h>
18 #ifdef HAVE_SYS_MMAN_H
27 #ifdef HAVE_EXECINFO_H
34 #ifdef HAVE_SYS_WAIT_H
35 #include <sys/wait.h> /* for WIFEXITED, WEXITSTATUS */
38 #ifdef HAVE_DL_ITERATE_PHDR
42 #include <mono/metadata/tabledefs.h>
43 #include <mono/metadata/class.h>
44 #include <mono/metadata/object.h>
45 #include <mono/metadata/tokentype.h>
46 #include <mono/metadata/appdomain.h>
47 #include <mono/metadata/debug-helpers.h>
48 #include <mono/metadata/assembly.h>
49 #include <mono/metadata/metadata-internals.h>
50 #include <mono/metadata/marshal.h>
51 #include <mono/metadata/gc-internal.h>
52 #include <mono/metadata/monitor.h>
53 #include <mono/metadata/threads-types.h>
54 #include <mono/metadata/mono-endian.h>
55 #include <mono/utils/mono-logger-internal.h>
56 #include <mono/utils/mono-mmap.h>
57 #include "mono/utils/mono-compiler.h"
58 #include <mono/utils/mono-counters.h>
66 #define SHARED_EXT ".dll"
67 #elif ((defined(__ppc__) || defined(__powerpc__) || defined(__ppc64__)) || defined(__MACH__)) && !defined(__linux__)
68 #define SHARED_EXT ".dylib"
69 #elif defined(__APPLE__) && defined(TARGET_X86) && !defined(__native_client_codegen__)
70 #define SHARED_EXT ".dylib"
72 #define SHARED_EXT ".so"
75 #define ALIGN_PTR_TO(ptr,align) (gpointer)((((gssize)(ptr)) + (align - 1)) & (~(align - 1)))
76 #define ROUND_DOWN(VALUE,SIZE) ((VALUE) & ~((SIZE) - 1))
78 typedef struct MonoAotModule {
80 /* Pointer to the Global Offset Table */
82 GHashTable *name_cache;
83 GHashTable *extra_methods;
84 /* Maps methods to their code */
85 GHashTable *method_to_code;
86 /* Maps pointers into the method info to the methods themselves */
87 GHashTable *method_ref_to_method;
88 MonoAssemblyName *image_names;
90 MonoAssembly *assembly;
91 MonoImage **image_table;
92 guint32 image_table_len;
102 gint32 *code_offsets;
103 /* This contains <offset, index> pairs sorted by offset */
104 /* This is needed because LLVM emitted methods can be in any order */
105 gint32 *sorted_code_offsets;
106 gint32 sorted_code_offsets_len;
107 guint32 *method_info_offsets;
108 guint32 *got_info_offsets;
109 guint32 *ex_info_offsets;
110 guint32 *class_info_offsets;
111 guint32 *methods_loaded;
112 guint16 *class_name_table;
113 guint32 *extra_method_table;
114 guint32 *extra_method_info_offsets;
117 /* Points to the mono EH data created by LLVM */
118 guint8 *mono_eh_frame;
120 /* Points to the trampolines */
121 guint8 *trampolines [MONO_AOT_TRAMP_NUM];
122 /* The first unused trampoline of each kind */
123 guint32 trampoline_index [MONO_AOT_TRAMP_NUM];
125 MonoAotFileInfo info;
131 static GHashTable *aot_modules;
132 #define mono_aot_lock() EnterCriticalSection (&aot_mutex)
133 #define mono_aot_unlock() LeaveCriticalSection (&aot_mutex)
134 static CRITICAL_SECTION aot_mutex;
137 * Maps assembly names to the mono_aot_module_<NAME>_info symbols in the
138 * AOT modules registered by mono_aot_register_module ().
140 static GHashTable *static_aot_modules;
143 * Maps MonoJitInfo* to the aot module they belong to, this can be different
144 * from ji->method->klass->image's aot module for generic instances.
146 static GHashTable *ji_to_amodule;
149 * Whenever to AOT compile loaded assemblies on demand and store them in
150 * a cache under $HOME/.mono/aot-cache.
152 static gboolean use_aot_cache = FALSE;
155 * Whenever to spawn a new process to AOT a file or do it in-process. Only relevant if
156 * use_aot_cache is TRUE.
158 static gboolean spawn_compiler = TRUE;
161 static gint32 mono_last_aot_method = -1;
163 static gboolean make_unreadable = FALSE;
164 static guint32 name_table_accesses = 0;
165 static guint32 n_pagefaults = 0;
167 /* Used to speed-up find_aot_module () */
168 static gsize aot_code_low_addr = (gssize)-1;
169 static gsize aot_code_high_addr = 0;
171 static GHashTable *aot_jit_icall_hash;
174 init_plt (MonoAotModule *info);
176 /*****************************************************/
178 /*****************************************************/
183 * Load one of the images referenced by AMODULE. Returns NULL if the image is not
184 * found, and sets the loader error if SET_ERROR is TRUE.
187 load_image (MonoAotModule *amodule, int index, gboolean set_error)
189 MonoAssembly *assembly;
190 MonoImageOpenStatus status;
192 g_assert (index < amodule->image_table_len);
194 if (amodule->image_table [index])
195 return amodule->image_table [index];
196 if (amodule->out_of_date)
199 assembly = mono_assembly_load (&amodule->image_names [index], amodule->assembly->basedir, &status);
201 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);
202 amodule->out_of_date = TRUE;
205 char *full_name = mono_stringify_assembly_name (&amodule->image_names [index]);
206 mono_loader_set_error_assembly_load (full_name, FALSE);
212 if (strcmp (assembly->image->guid, amodule->image_guids [index])) {
213 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is out of date (Older than dependency %s).\n", amodule->aot_name, amodule->image_names [index].name);
214 amodule->out_of_date = TRUE;
218 amodule->image_table [index] = assembly->image;
219 return assembly->image;
223 decode_value (guint8 *ptr, guint8 **rptr)
228 if ((b & 0x80) == 0){
231 } else if ((b & 0x40) == 0){
232 len = ((b & 0x3f) << 8 | ptr [1]);
234 } else if (b != 0xff) {
235 len = ((b & 0x1f) << 24) |
242 len = (ptr [1] << 24) | (ptr [2] << 16) | (ptr [3] << 8) | ptr [4];
248 //printf ("DECODE: %d.\n", len);
253 * mono_aot_get_method:
255 * Decode an offset table emitted by emit_offset_table (), returning the INDEXth
259 mono_aot_get_offset (guint32 *table, int index)
261 int i, group, ngroups, index_entry_size;
262 int start_offset, offset, noffsets, group_size;
263 guint8 *data_start, *p;
264 guint32 *index32 = NULL;
265 guint16 *index16 = NULL;
267 noffsets = table [0];
268 group_size = table [1];
270 index_entry_size = table [3];
271 group = index / group_size;
273 if (index_entry_size == 2) {
274 index16 = (guint16*)&table [4];
275 data_start = (guint8*)&index16 [ngroups];
276 p = data_start + index16 [group];
278 index32 = (guint32*)&table [4];
279 data_start = (guint8*)&index32 [ngroups];
280 p = data_start + index32 [group];
283 /* offset will contain the value of offsets [group * group_size] */
284 offset = start_offset = decode_value (p, &p);
285 for (i = group * group_size + 1; i <= index; ++i) {
286 offset += decode_value (p, &p);
289 //printf ("Offset lookup: %d -> %d, start=%d, p=%d\n", index, offset, start_offset, table [3 + group]);
295 decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf);
298 decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf);
300 static MonoGenericInst*
301 decode_generic_inst (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
304 MonoType **type_argv;
305 MonoGenericInst *inst;
308 type_argc = decode_value (p, &p);
309 type_argv = g_new0 (MonoType*, type_argc);
311 for (i = 0; i < type_argc; ++i) {
312 MonoClass *pclass = decode_klass_ref (module, p, &p);
317 type_argv [i] = &pclass->byval_arg;
320 inst = mono_metadata_get_generic_inst (type_argc, type_argv);
329 decode_generic_context (MonoAotModule *module, MonoGenericContext *ctx, guint8 *buf, guint8 **endbuf)
331 gboolean has_class_inst, has_method_inst;
334 has_class_inst = decode_value (p, &p);
335 if (has_class_inst) {
336 ctx->class_inst = decode_generic_inst (module, p, &p);
337 if (!ctx->class_inst)
340 has_method_inst = decode_value (p, &p);
341 if (has_method_inst) {
342 ctx->method_inst = decode_generic_inst (module, p, &p);
343 if (!ctx->method_inst)
352 decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
355 MonoClass *klass, *eklass;
359 token = decode_value (p, &p);
364 if (mono_metadata_token_table (token) == 0) {
365 image = load_image (module, decode_value (p, &p), TRUE);
368 klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF + token);
369 } else if (mono_metadata_token_table (token) == MONO_TABLE_TYPESPEC) {
370 if (token == MONO_TOKEN_TYPE_SPEC) {
371 MonoTypeEnum type = decode_value (p, &p);
373 if (type == MONO_TYPE_GENERICINST) {
375 MonoGenericContext ctx;
378 gclass = decode_klass_ref (module, p, &p);
381 g_assert (gclass->generic_container);
383 memset (&ctx, 0, sizeof (ctx));
384 ctx.class_inst = decode_generic_inst (module, p, &p);
387 type = mono_class_inflate_generic_type (&gclass->byval_arg, &ctx);
388 klass = mono_class_from_mono_type (type);
389 mono_metadata_free_type (type);
390 } else if ((type == MONO_TYPE_VAR) || (type == MONO_TYPE_MVAR)) {
392 MonoGenericContainer *container;
394 int num = decode_value (p, &p);
395 gboolean is_method = decode_value (p, &p);
398 MonoMethod *method_def;
399 g_assert (type == MONO_TYPE_MVAR);
400 method_def = decode_resolve_method_ref (module, p, &p);
404 container = mono_method_get_generic_container (method_def);
406 MonoClass *class_def;
407 g_assert (type == MONO_TYPE_VAR);
408 class_def = decode_klass_ref (module, p, &p);
412 container = class_def->generic_container;
415 g_assert (container);
417 // FIXME: Memory management
418 t = g_new0 (MonoType, 1);
420 t->data.generic_param = mono_generic_container_get_param (container, num);
422 // FIXME: Maybe use types directly to avoid
423 // the overhead of creating MonoClass-es
424 klass = mono_class_from_mono_type (t);
428 g_assert_not_reached ();
431 image = load_image (module, decode_value (p, &p), TRUE);
434 klass = mono_class_get (image, token);
436 } else if (token == MONO_TOKEN_TYPE_DEF) {
438 image = load_image (module, decode_value (p, &p), TRUE);
441 rank = decode_value (p, &p);
442 eklass = decode_klass_ref (module, p, &p);
443 klass = mono_array_class_get (eklass, rank);
445 g_assert_not_reached ();
453 static MonoClassField*
454 decode_field_info (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
456 MonoClass *klass = decode_klass_ref (module, buf, &buf);
463 token = MONO_TOKEN_FIELD_DEF + decode_value (p, &p);
467 return mono_class_get_field (klass, token);
470 /* Stores information returned by decode_method_ref () */
475 gboolean no_aot_trampoline;
479 * decode_method_ref_with_target:
481 * Decode a method reference, storing the image/token into a MethodRef structure.
482 * This avoids loading metadata for the method if the caller does not need it. If the method has
483 * no token, then it is loaded from metadata and ref->method is set to the method instance.
484 * If TARGET is non-NULL, abort decoding if it can be determined that the decoded method couldn't resolve to TARGET, and return FALSE.
487 decode_method_ref_with_target (MonoAotModule *module, MethodRef *ref, MonoMethod *target, guint8 *buf, guint8 **endbuf)
489 guint32 image_index, value;
490 MonoImage *image = NULL;
493 memset (ref, 0, sizeof (MethodRef));
495 value = decode_value (p, &p);
496 image_index = value >> 24;
498 if (image_index == MONO_AOT_METHODREF_NO_AOT_TRAMPOLINE) {
499 ref->no_aot_trampoline = TRUE;
500 value = decode_value (p, &p);
501 image_index = value >> 24;
504 if (image_index < MONO_AOT_METHODREF_MIN || image_index == MONO_AOT_METHODREF_METHODSPEC || image_index == MONO_AOT_METHODREF_GINST) {
505 if (target && target->wrapper_type)
509 if (image_index == MONO_AOT_METHODREF_WRAPPER) {
510 guint32 wrapper_type;
512 wrapper_type = decode_value (p, &p);
514 if (target && target->wrapper_type != wrapper_type)
518 image = mono_defaults.corlib;
520 switch (wrapper_type) {
521 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK: {
522 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
526 mono_class_init (m->klass);
527 ref->method = mono_marshal_get_remoting_invoke_with_check (m);
530 case MONO_WRAPPER_PROXY_ISINST: {
531 MonoClass *klass = decode_klass_ref (module, p, &p);
534 ref->method = mono_marshal_get_proxy_cancast (klass);
537 case MONO_WRAPPER_LDFLD:
538 case MONO_WRAPPER_LDFLDA:
539 case MONO_WRAPPER_STFLD:
540 case MONO_WRAPPER_ISINST: {
541 MonoClass *klass = decode_klass_ref (module, p, &p);
544 if (wrapper_type == MONO_WRAPPER_LDFLD)
545 ref->method = mono_marshal_get_ldfld_wrapper (&klass->byval_arg);
546 else if (wrapper_type == MONO_WRAPPER_LDFLDA)
547 ref->method = mono_marshal_get_ldflda_wrapper (&klass->byval_arg);
548 else if (wrapper_type == MONO_WRAPPER_STFLD)
549 ref->method = mono_marshal_get_stfld_wrapper (&klass->byval_arg);
550 else if (wrapper_type == MONO_WRAPPER_ISINST)
551 ref->method = mono_marshal_get_isinst (klass);
553 g_assert_not_reached ();
556 case MONO_WRAPPER_LDFLD_REMOTE:
557 ref->method = mono_marshal_get_ldfld_remote_wrapper (NULL);
559 case MONO_WRAPPER_STFLD_REMOTE:
560 ref->method = mono_marshal_get_stfld_remote_wrapper (NULL);
562 case MONO_WRAPPER_ALLOC: {
563 int atype = decode_value (p, &p);
565 ref->method = mono_gc_get_managed_allocator_by_type (atype);
568 case MONO_WRAPPER_WRITE_BARRIER:
569 ref->method = mono_gc_get_write_barrier ();
571 case MONO_WRAPPER_STELEMREF:
572 ref->method = mono_marshal_get_stelemref ();
574 case MONO_WRAPPER_SYNCHRONIZED: {
575 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
579 ref->method = mono_marshal_get_synchronized_wrapper (m);
582 case MONO_WRAPPER_UNKNOWN: {
583 MonoMethodDesc *desc;
584 MonoMethod *orig_method;
585 int subtype = decode_value (p, &p);
587 if (subtype == MONO_AOT_WRAPPER_MONO_ENTER)
588 desc = mono_method_desc_new ("Monitor:Enter", FALSE);
589 else if (subtype == MONO_AOT_WRAPPER_MONO_EXIT)
590 desc = mono_method_desc_new ("Monitor:Exit", FALSE);
592 g_assert_not_reached ();
593 orig_method = mono_method_desc_search_in_class (desc, mono_defaults.monitor_class);
594 g_assert (orig_method);
595 mono_method_desc_free (desc);
596 ref->method = mono_monitor_get_fast_path (orig_method);
599 case MONO_WRAPPER_RUNTIME_INVOKE: {
601 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
605 ref->method = mono_marshal_get_runtime_invoke (m, FALSE);
608 case MONO_WRAPPER_MANAGED_TO_MANAGED: {
609 int subtype = decode_value (p, &p);
611 if (subtype == MONO_AOT_WRAPPER_ELEMENT_ADDR) {
612 int rank = decode_value (p, &p);
613 int elem_size = decode_value (p, &p);
615 ref->method = mono_marshal_get_array_address (rank, elem_size);
617 g_assert_not_reached ();
622 g_assert_not_reached ();
624 } else if (image_index == MONO_AOT_METHODREF_WRAPPER_NAME) {
627 /* Can't decode these */
628 g_assert_not_reached ();
629 } else if (image_index == MONO_AOT_METHODREF_METHODSPEC) {
630 image_index = decode_value (p, &p);
631 ref->token = decode_value (p, &p);
633 image = load_image (module, image_index, TRUE);
636 } else if (image_index == MONO_AOT_METHODREF_GINST) {
638 MonoGenericContext ctx;
641 * These methods do not have a token which resolves them, so we
642 * resolve them immediately.
644 klass = decode_klass_ref (module, p, &p);
648 if (target && target->klass != klass)
651 image_index = decode_value (p, &p);
652 ref->token = decode_value (p, &p);
654 image = load_image (module, image_index, TRUE);
658 ref->method = mono_get_method_full (image, ref->token, NULL, NULL);
662 memset (&ctx, 0, sizeof (ctx));
664 if (FALSE && klass->generic_class) {
665 ctx.class_inst = klass->generic_class->context.class_inst;
666 ctx.method_inst = NULL;
668 ref->method = mono_class_inflate_generic_method_full (ref->method, klass, &ctx);
671 memset (&ctx, 0, sizeof (ctx));
673 if (!decode_generic_context (module, &ctx, p, &p))
676 ref->method = mono_class_inflate_generic_method_full (ref->method, klass, &ctx);
677 } else if (image_index == MONO_AOT_METHODREF_ARRAY) {
681 klass = decode_klass_ref (module, p, &p);
684 method_type = decode_value (p, &p);
685 switch (method_type) {
687 ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank);
690 ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank * 2);
693 ref->method = mono_class_get_method_from_name (klass, "Get", -1);
696 ref->method = mono_class_get_method_from_name (klass, "Address", -1);
699 ref->method = mono_class_get_method_from_name (klass, "Set", -1);
702 g_assert_not_reached ();
705 g_assert (image_index < MONO_AOT_METHODREF_MIN);
706 ref->token = MONO_TOKEN_METHOD_DEF | (value & 0xffffff);
708 image = load_image (module, image_index, TRUE);
721 decode_method_ref (MonoAotModule *module, MethodRef *ref, guint8 *buf, guint8 **endbuf)
723 return decode_method_ref_with_target (module, ref, NULL, buf, endbuf);
727 * decode_resolve_method_ref_with_target:
729 * Similar to decode_method_ref, but resolve and return the method itself.
732 decode_resolve_method_ref_with_target (MonoAotModule *module, MonoMethod *target, guint8 *buf, guint8 **endbuf)
737 res = decode_method_ref_with_target (module, &ref, target, buf, endbuf);
744 return mono_get_method (ref.image, ref.token, NULL);
748 decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
750 return decode_resolve_method_ref_with_target (module, NULL, buf, endbuf);
754 create_cache_structure (void)
760 home = g_get_home_dir ();
764 tmp = g_build_filename (home, ".mono", NULL);
765 if (!g_file_test (tmp, G_FILE_TEST_IS_DIR)) {
766 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT creating directory %s", tmp);
770 err = mkdir (tmp, 0777);
773 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed: %s", g_strerror (errno));
779 tmp = g_build_filename (home, ".mono", "aot-cache", NULL);
780 if (!g_file_test (tmp, G_FILE_TEST_IS_DIR)) {
781 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT creating directory %s", tmp);
785 err = mkdir (tmp, 0777);
788 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed: %s", g_strerror (errno));
797 * load_aot_module_from_cache:
799 * Experimental code to AOT compile loaded assemblies on demand.
802 * - Add environment variable MONO_AOT_CACHE_OPTIONS
803 * - Add options for controlling the cache size
804 * - Handle full cache by deleting old assemblies lru style
805 * - Add options for excluding assemblies during development
806 * - Maybe add a threshold after an assembly is AOT compiled
807 * - invoking a new mono process is a security risk
808 * - recompile the AOT module if one of its dependencies changes
811 load_aot_module_from_cache (MonoAssembly *assembly, char **aot_name)
813 char *fname, *cmd, *tmp2, *aot_options;
822 if (assembly->image->dynamic)
825 create_cache_structure ();
827 home = g_get_home_dir ();
829 tmp2 = g_strdup_printf ("%s-%s%s", assembly->image->assembly_name, assembly->image->guid, SHARED_EXT);
830 fname = g_build_filename (home, ".mono", "aot-cache", tmp2, NULL);
834 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT trying to load from cache: '%s'.", fname);
835 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
838 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT not found.");
840 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT precompiling assembly '%s'... ", assembly->image->name);
842 aot_options = g_strdup_printf ("outfile=%s", fname);
844 if (spawn_compiler) {
845 /* FIXME: security */
846 /* FIXME: Has to pass the assembly loading path to the child process */
847 cmd = g_strdup_printf ("mono -O=all --aot=%s %s", aot_options, assembly->image->name);
849 res = g_spawn_command_line_sync (cmd, &out, &err, &exit_status, NULL);
851 #if !defined(HOST_WIN32) && !defined(__ppc__) && !defined(__ppc64__) && !defined(__powerpc__)
853 if (!WIFEXITED (exit_status) && (WEXITSTATUS (exit_status) == 0))
854 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT failed: %s.", err);
856 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT succeeded.");
863 res = mono_compile_assembly (assembly, mono_parse_default_optimizations (NULL), aot_options);
865 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT failed.");
867 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT succeeded.");
871 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
873 g_free (aot_options);
880 find_symbol (MonoDl *module, gpointer *globals, const char *name, gpointer *value)
884 guint16 *table, *entry;
888 /* The first entry points to the hash */
892 table_size = table [0];
895 hash = mono_metadata_str_hash (name) % table_size;
897 entry = &table [hash * 2];
899 /* Search the hash for the index into the globals table */
901 while (entry [0] != 0) {
902 guint32 index = entry [0] - 1;
903 guint32 next = entry [1];
905 //printf ("X: %s %s\n", (char*)globals [index * 2], name);
907 if (!strcmp (globals [index * 2], name)) {
908 global_index = index;
913 entry = &table [next * 2];
919 if (global_index != -1)
920 *value = globals [global_index * 2 + 1];
924 char *err = mono_dl_symbol (module, name, value);
932 load_aot_module (MonoAssembly *assembly, gpointer user_data)
935 MonoAotModule *amodule;
937 gboolean usable = TRUE;
938 char *saved_guid = NULL;
939 char *aot_version = NULL;
940 char *runtime_version, *build_info;
941 char *opt_flags = NULL;
943 gboolean full_aot = FALSE;
944 MonoAotFileInfo *file_info = NULL;
949 if (mono_compile_aot)
952 if (assembly->image->aot_module)
954 * Already loaded. This can happen because the assembly loading code might invoke
955 * the assembly load hooks multiple times for the same assembly.
959 if (assembly->image->dynamic)
962 if (mono_security_get_mode () == MONO_SECURITY_MODE_CAS)
966 if (static_aot_modules)
967 globals = g_hash_table_lookup (static_aot_modules, assembly->aname.name);
973 /* Statically linked AOT module */
975 aot_name = g_strdup_printf ("%s", assembly->aname.name);
976 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "Found statically linked AOT module '%s'.\n", aot_name);
979 sofile = load_aot_module_from_cache (assembly, &aot_name);
982 aot_name = g_strdup_printf ("%s%s", assembly->image->name, SHARED_EXT);
984 sofile = mono_dl_open (aot_name, MONO_DL_LAZY, &err);
987 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed to load AOT module %s: %s\n", aot_name, err);
993 if (!sofile && !globals) {
995 fprintf (stderr, "Failed to load AOT module '%s' in aot-only mode.\n", aot_name);
1002 find_symbol (sofile, globals, "mono_assembly_guid", (gpointer *) &saved_guid);
1003 find_symbol (sofile, globals, "mono_aot_version", (gpointer *) &aot_version);
1004 find_symbol (sofile, globals, "mono_aot_opt_flags", (gpointer *)&opt_flags);
1005 find_symbol (sofile, globals, "mono_runtime_version", (gpointer *)&runtime_version);
1006 find_symbol (sofile, globals, "mono_aot_got_addr", (gpointer *)&got_addr);
1008 if (!aot_version || strcmp (aot_version, MONO_AOT_FILE_VERSION)) {
1009 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s has wrong file format version (expected %s got %s)\n", aot_name, MONO_AOT_FILE_VERSION, aot_version);
1013 if (!saved_guid || strcmp (assembly->image->guid, saved_guid)) {
1014 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is out of date.\n", aot_name);
1019 build_info = mono_get_runtime_build_info ();
1020 if (!runtime_version || ((strlen (runtime_version) > 0 && strcmp (runtime_version, build_info)))) {
1021 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is compiled against runtime version '%s' while this runtime has version '%s'.\n", aot_name, runtime_version, build_info);
1024 g_free (build_info);
1026 find_symbol (sofile, globals, "mono_aot_file_info", (gpointer*)&file_info);
1027 g_assert (file_info);
1029 full_aot = ((MonoAotFileInfo*)file_info)->flags & MONO_AOT_FILE_FLAG_FULL_AOT;
1031 if (mono_aot_only && !full_aot) {
1032 fprintf (stderr, "Can't use AOT image '%s' in aot-only mode because it is not compiled with --aot=full.\n", aot_name);
1035 if (!mono_aot_only && full_aot) {
1036 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is compiled with --aot=full.\n", aot_name);
1040 /* This is no longer needed, LLVM and non-LLVM runtimes should be compatible.
1041 if ((((MonoAotFileInfo*)file_info)->flags & MONO_AOT_FILE_FLAG_WITH_LLVM) && !mono_use_llvm) {
1042 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is compiled with LLVM.\n", aot_name);
1047 if (mini_get_debug_options ()->mdb_optimizations && !(file_info->flags & MONO_AOT_FILE_FLAG_DEBUG) && !full_aot) {
1048 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is not compiled for debugging.\n", aot_name);
1052 find_symbol (sofile, globals, "blob", (gpointer*)&blob);
1054 if (usable && ((MonoAotFileInfo*)file_info)->gc_name_index != -1) {
1055 char *gc_name = (char*)&blob [((MonoAotFileInfo*)file_info)->gc_name_index];
1056 const char *current_gc_name = mono_gc_get_gc_name ();
1058 if (strcmp (current_gc_name, gc_name) != 0) {
1059 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is compiled against GC %s, while the current runtime uses GC %s.\n", aot_name, gc_name, current_gc_name);
1065 if (mono_aot_only) {
1066 fprintf (stderr, "Failed to load AOT module '%s' while running in aot-only mode.\n", aot_name);
1069 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is unusable.\n", aot_name);
1073 mono_dl_close (sofile);
1074 assembly->image->aot_module = NULL;
1078 amodule = g_new0 (MonoAotModule, 1);
1079 amodule->aot_name = aot_name;
1080 amodule->assembly = assembly;
1082 memcpy (&amodule->info, file_info, sizeof (*file_info));
1084 amodule->got = *got_addr;
1085 amodule->got [0] = assembly->image;
1086 amodule->globals = globals;
1087 amodule->sofile = sofile;
1088 amodule->method_to_code = g_hash_table_new (mono_aligned_addr_hash, NULL);
1089 amodule->blob = blob;
1091 /* Read image table */
1093 guint32 table_len, i;
1096 find_symbol (sofile, globals, "mono_image_table", (gpointer *)&table);
1099 table_len = *(guint32*)table;
1100 table += sizeof (guint32);
1101 amodule->image_table = g_new0 (MonoImage*, table_len);
1102 amodule->image_names = g_new0 (MonoAssemblyName, table_len);
1103 amodule->image_guids = g_new0 (char*, table_len);
1104 amodule->image_table_len = table_len;
1105 for (i = 0; i < table_len; ++i) {
1106 MonoAssemblyName *aname = &(amodule->image_names [i]);
1108 aname->name = g_strdup (table);
1109 table += strlen (table) + 1;
1110 amodule->image_guids [i] = g_strdup (table);
1111 table += strlen (table) + 1;
1113 aname->culture = g_strdup (table);
1114 table += strlen (table) + 1;
1115 memcpy (aname->public_key_token, table, strlen (table) + 1);
1116 table += strlen (table) + 1;
1118 table = ALIGN_PTR_TO (table, 8);
1119 aname->flags = *(guint32*)table;
1121 aname->major = *(guint32*)table;
1123 aname->minor = *(guint32*)table;
1125 aname->build = *(guint32*)table;
1127 aname->revision = *(guint32*)table;
1132 /* Read method and method_info tables */
1133 find_symbol (sofile, globals, "code_offsets", (gpointer*)&amodule->code_offsets);
1134 find_symbol (sofile, globals, "methods", (gpointer*)&amodule->code);
1135 find_symbol (sofile, globals, "methods_end", (gpointer*)&amodule->code_end);
1136 find_symbol (sofile, globals, "method_info_offsets", (gpointer*)&amodule->method_info_offsets);
1137 find_symbol (sofile, globals, "ex_info_offsets", (gpointer*)&amodule->ex_info_offsets);
1138 find_symbol (sofile, globals, "class_info_offsets", (gpointer*)&amodule->class_info_offsets);
1139 find_symbol (sofile, globals, "class_name_table", (gpointer *)&amodule->class_name_table);
1140 find_symbol (sofile, globals, "extra_method_table", (gpointer *)&amodule->extra_method_table);
1141 find_symbol (sofile, globals, "extra_method_info_offsets", (gpointer *)&amodule->extra_method_info_offsets);
1142 find_symbol (sofile, globals, "got_info_offsets", (gpointer*)&amodule->got_info_offsets);
1143 find_symbol (sofile, globals, "specific_trampolines", (gpointer*)&(amodule->trampolines [MONO_AOT_TRAMP_SPECIFIC]));
1144 find_symbol (sofile, globals, "static_rgctx_trampolines", (gpointer*)&(amodule->trampolines [MONO_AOT_TRAMP_STATIC_RGCTX]));
1145 find_symbol (sofile, globals, "imt_thunks", (gpointer*)&(amodule->trampolines [MONO_AOT_TRAMP_IMT_THUNK]));
1146 find_symbol (sofile, globals, "unwind_info", (gpointer)&amodule->unwind_info);
1147 find_symbol (sofile, globals, "mem_end", (gpointer*)&amodule->mem_end);
1149 amodule->mem_begin = amodule->code;
1151 find_symbol (sofile, globals, "plt", (gpointer*)&amodule->plt);
1152 find_symbol (sofile, globals, "plt_end", (gpointer*)&amodule->plt_end);
1154 if (file_info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM) {
1156 find_symbol (sofile, globals, "mono_eh_frame_addr", (gpointer*)&p);
1158 amodule->mono_eh_frame = *p;
1161 if (make_unreadable) {
1162 #ifndef TARGET_WIN32
1164 guint8 *page_start, *page_end;
1167 addr = amodule->mem_begin;
1168 len = amodule->mem_end - amodule->mem_begin;
1170 /* Round down in both directions to avoid modifying data which is not ours */
1171 page_start = (guint8 *) (((gssize) (addr)) & ~ (mono_pagesize () - 1)) + mono_pagesize ();
1172 page_end = (guint8 *) (((gssize) (addr + len)) & ~ (mono_pagesize () - 1));
1173 if (page_end > page_start) {
1174 err = mono_mprotect (page_start, (page_end - page_start), MONO_MMAP_NONE);
1175 g_assert (err == 0);
1182 aot_code_low_addr = MIN (aot_code_low_addr, (gsize)amodule->code);
1183 aot_code_high_addr = MAX (aot_code_high_addr, (gsize)amodule->code_end);
1185 g_hash_table_insert (aot_modules, assembly, amodule);
1188 mono_jit_info_add_aot_module (assembly->image, amodule->code, amodule->code_end);
1190 assembly->image->aot_module = amodule;
1192 if (mono_aot_only) {
1193 if (mono_defaults.corlib) {
1194 /* The second got slot contains the mscorlib got addr */
1195 MonoAotModule *mscorlib_amodule = mono_defaults.corlib->aot_module;
1197 amodule->got [1] = mscorlib_amodule->got;
1199 amodule->got [1] = amodule->got;
1203 if (mono_gc_is_moving ()) {
1206 memset (&ji, 0, sizeof (ji));
1207 ji.type = MONO_PATCH_INFO_GC_CARD_TABLE_ADDR;
1209 amodule->got [2] = mono_resolve_patch_target (NULL, mono_get_root_domain (), NULL, &ji, FALSE);
1213 * Since we store methoddef and classdef tokens when referring to methods/classes in
1214 * referenced assemblies, we depend on the exact versions of the referenced assemblies.
1215 * MS calls this 'hard binding'. This means we have to load all referenced assemblies
1216 * non-lazily, since we can't handle out-of-date errors later.
1217 * The cached class info also depends on the exact assemblies.
1219 for (i = 0; i < amodule->image_table_len; ++i)
1220 load_image (amodule, i, FALSE);
1222 if (amodule->out_of_date) {
1223 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);
1224 if (mono_aot_only) {
1225 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);
1230 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT loaded AOT Module for %s.\n", assembly->image->name);
1234 * mono_aot_register_globals:
1236 * This is called by the ctor function in AOT images compiled with the
1237 * 'no-dlsym' option.
1240 mono_aot_register_globals (gpointer *globals)
1242 g_assert_not_reached ();
1246 * mono_aot_register_module:
1248 * This should be called by embedding code to register AOT modules statically linked
1249 * into the executable. AOT_INFO should be the value of the
1250 * 'mono_aot_module_<ASSEMBLY_NAME>_info' global symbol from the AOT module.
1253 mono_aot_register_module (gpointer *aot_info)
1261 /* Determine the assembly name */
1262 find_symbol (NULL, globals, "mono_aot_assembly_name", (gpointer*)&aname);
1265 /* This could be called before startup */
1269 if (!static_aot_modules)
1270 static_aot_modules = g_hash_table_new (g_str_hash, g_str_equal);
1272 g_hash_table_insert (static_aot_modules, aname, globals);
1279 mono_aot_init (void)
1281 InitializeCriticalSection (&aot_mutex);
1282 aot_modules = g_hash_table_new (NULL, NULL);
1284 mono_install_assembly_load_hook (load_aot_module, NULL);
1286 if (g_getenv ("MONO_LASTAOT"))
1287 mono_last_aot_method = atoi (g_getenv ("MONO_LASTAOT"));
1288 if (g_getenv ("MONO_AOT_CACHE"))
1289 use_aot_cache = TRUE;
1293 mono_aot_cleanup (void)
1295 if (aot_jit_icall_hash)
1296 g_hash_table_destroy (aot_jit_icall_hash);
1298 g_hash_table_destroy (aot_modules);
1302 decode_cached_class_info (MonoAotModule *module, MonoCachedClassInfo *info, guint8 *buf, guint8 **endbuf)
1308 info->vtable_size = decode_value (buf, &buf);
1309 if (info->vtable_size == -1)
1312 flags = decode_value (buf, &buf);
1313 info->ghcimpl = (flags >> 0) & 0x1;
1314 info->has_finalize = (flags >> 1) & 0x1;
1315 info->has_cctor = (flags >> 2) & 0x1;
1316 info->has_nested_classes = (flags >> 3) & 0x1;
1317 info->blittable = (flags >> 4) & 0x1;
1318 info->has_references = (flags >> 5) & 0x1;
1319 info->has_static_refs = (flags >> 6) & 0x1;
1320 info->no_special_static_fields = (flags >> 7) & 0x1;
1321 info->is_generic_container = (flags >> 8) & 0x1;
1323 if (info->has_cctor) {
1324 res = decode_method_ref (module, &ref, buf, &buf);
1327 info->cctor_token = ref.token;
1329 if (info->has_finalize) {
1330 res = decode_method_ref (module, &ref, buf, &buf);
1333 info->finalize_image = ref.image;
1334 info->finalize_token = ref.token;
1337 info->instance_size = decode_value (buf, &buf);
1338 info->class_size = decode_value (buf, &buf);
1339 info->packing_size = decode_value (buf, &buf);
1340 info->min_align = decode_value (buf, &buf);
1348 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
1351 MonoClass *klass = vtable->klass;
1352 MonoAotModule *amodule = klass->image->aot_module;
1354 MonoCachedClassInfo class_info;
1359 if (MONO_CLASS_IS_INTERFACE (klass) || klass->rank || !amodule)
1362 info = &amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
1365 err = decode_cached_class_info (amodule, &class_info, p, &p);
1369 for (i = 0; i < slot; ++i)
1370 decode_method_ref (amodule, &ref, p, &p);
1372 res = decode_method_ref (amodule, &ref, p, &p);
1375 if (ref.no_aot_trampoline)
1378 if (mono_metadata_token_index (ref.token) == 0)
1381 return mono_aot_get_method_from_token (domain, ref.image, ref.token);
1385 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
1387 MonoAotModule *amodule = klass->image->aot_module;
1391 if (klass->rank || !amodule)
1394 p = (guint8*)&amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
1396 err = decode_cached_class_info (amodule, res, p, &p);
1404 * mono_aot_get_class_from_name:
1406 * Obtains a MonoClass with a given namespace and a given name which is located in IMAGE,
1407 * using a cache stored in the AOT file.
1408 * Stores the resulting class in *KLASS if found, stores NULL otherwise.
1410 * Returns: TRUE if the klass was found/not found in the cache, FALSE if no aot file was
1414 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
1416 MonoAotModule *amodule = image->aot_module;
1417 guint16 *table, *entry;
1420 char full_name_buf [1024];
1422 const char *name2, *name_space2;
1424 guint32 cols [MONO_TYPEDEF_SIZE];
1425 GHashTable *nspace_table;
1427 if (!amodule || !amodule->class_name_table)
1434 /* First look in the cache */
1435 if (!amodule->name_cache)
1436 amodule->name_cache = g_hash_table_new (g_str_hash, g_str_equal);
1437 nspace_table = g_hash_table_lookup (amodule->name_cache, name_space);
1439 *klass = g_hash_table_lookup (nspace_table, name);
1446 table_size = amodule->class_name_table [0];
1447 table = amodule->class_name_table + 1;
1449 if (name_space [0] == '\0')
1450 full_name = g_strdup_printf ("%s", name);
1452 if (strlen (name_space) + strlen (name) < 1000) {
1453 sprintf (full_name_buf, "%s.%s", name_space, name);
1454 full_name = full_name_buf;
1456 full_name = g_strdup_printf ("%s.%s", name_space, name);
1459 hash = mono_metadata_str_hash (full_name) % table_size;
1460 if (full_name != full_name_buf)
1463 entry = &table [hash * 2];
1465 if (entry [0] != 0) {
1466 t = &image->tables [MONO_TABLE_TYPEDEF];
1469 guint32 index = entry [0];
1470 guint32 next = entry [1];
1471 guint32 token = mono_metadata_make_token (MONO_TABLE_TYPEDEF, index);
1473 name_table_accesses ++;
1475 mono_metadata_decode_row (t, index - 1, cols, MONO_TYPEDEF_SIZE);
1477 name2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
1478 name_space2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
1480 if (!strcmp (name, name2) && !strcmp (name_space, name_space2)) {
1482 *klass = mono_class_get (image, token);
1487 nspace_table = g_hash_table_lookup (amodule->name_cache, name_space);
1488 if (!nspace_table) {
1489 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
1490 g_hash_table_insert (amodule->name_cache, (char*)name_space2, nspace_table);
1492 g_hash_table_insert (nspace_table, (char*)name2, *klass);
1499 entry = &table [next * 2];
1512 * decode_mono_eh_frame:
1514 * Decode the EH information emitted by our modified LLVM compiler and construct a
1515 * MonoJitInfo structure from it.
1516 * LOCKING: Acquires the domain lock.
1519 decode_llvm_mono_eh_frame (MonoAotModule *amodule, MonoDomain *domain,
1520 MonoMethod *method, guint8 *code,
1521 MonoJitExceptionInfo *clauses, int num_clauses,
1522 int extra_size, GSList **nesting,
1523 int *this_reg, int *this_offset)
1526 guint8 *fde, *cie, *code_start, *code_end;
1527 int version, fde_count;
1529 int i, j, pos, left, right, offset, offset1, offset2, code_len;
1530 MonoJitExceptionInfo *ei;
1531 guint32 fde_len, ei_len, nested_len, nindex;
1532 gpointer *type_info;
1534 MonoLLVMFDEInfo info;
1536 g_assert (amodule->mono_eh_frame);
1538 p = amodule->mono_eh_frame;
1540 /* p points to data emitted by LLVM in DwarfException::EmitMonoEHFrame () */
1544 g_assert (version == 1);
1546 p = ALIGN_PTR_TO (p, 4);
1548 fde_count = *(guint32*)p;
1552 /* There is +1 entry in the table */
1553 cie = p + ((fde_count + 1) * 8);
1555 /* Binary search in the table to find the entry for code */
1556 offset = code - amodule->mono_eh_frame;
1561 pos = (left + right) / 2;
1563 offset1 = table [(pos * 2)];
1564 if (pos + 1 == fde_count)
1566 offset2 = amodule->code_end - amodule->code;
1568 offset2 = table [(pos + 1) * 2];
1570 if (offset < offset1)
1572 else if (offset >= offset2)
1578 code_start = amodule->mono_eh_frame + table [(pos * 2)];
1579 /* This won't overflow because there is +1 entry in the table */
1580 code_end = amodule->mono_eh_frame + table [(pos * 2) + 2];
1581 code_len = code_end - code_start;
1583 g_assert (code >= code_start && code < code_end);
1585 fde = amodule->mono_eh_frame + table [(pos * 2) + 1];
1586 /* This won't overflow because there is +1 entry in the table */
1587 fde_len = table [(pos * 2) + 2 + 1] - table [(pos * 2) + 1];
1589 mono_unwind_decode_llvm_mono_fde (fde, fde_len, cie, code_start, &info);
1591 ei_len = info.ex_info_len;
1592 type_info = info.type_info;
1593 *this_reg = info.this_reg;
1594 *this_offset = info.this_offset;
1596 /* Count number of nested clauses */
1598 for (i = 0; i < ei_len; ++i) {
1599 /* This might be unaligned */
1600 gint32 cindex1 = read32 (type_info [i]);
1603 for (l = nesting [cindex1]; l; l = l->next) {
1604 gint32 nesting_cindex = GPOINTER_TO_INT (l->data);
1606 for (j = 0; j < ei_len; ++j) {
1607 gint32 cindex2 = read32 (type_info [j]);
1609 if (cindex2 == nesting_cindex)
1616 * LLVM might represent one IL region with multiple regions, so have to
1617 * allocate a new JI.
1620 mono_domain_alloc0 (domain, MONO_SIZEOF_JIT_INFO + (sizeof (MonoJitExceptionInfo) * (ei_len + nested_len)) + extra_size);
1622 jinfo->code_size = code_len;
1623 jinfo->used_regs = mono_cache_unwind_info (info.unw_info, info.unw_info_len);
1624 jinfo->method = method;
1625 jinfo->code_start = code;
1626 jinfo->domain_neutral = 0;
1627 /* This signals that used_regs points to a normal cached unwind info */
1628 jinfo->from_aot = 0;
1629 jinfo->num_clauses = ei_len + nested_len;
1631 for (i = 0; i < ei_len; ++i) {
1633 * orig_jinfo contains the original IL exception info saved by the AOT
1634 * compiler, we have to combine that with the information produced by LLVM
1636 /* The type_info entries contain IL clause indexes */
1637 int clause_index = read32 (type_info [i]);
1638 MonoJitExceptionInfo *jei = &jinfo->clauses [i];
1639 MonoJitExceptionInfo *orig_jei = &clauses [clause_index];
1641 g_assert (clause_index < num_clauses);
1642 jei->flags = orig_jei->flags;
1643 jei->data.catch_class = orig_jei->data.catch_class;
1645 jei->try_start = ei [i].try_start;
1646 jei->try_end = ei [i].try_end;
1647 jei->handler_start = ei [i].handler_start;
1650 /* See exception_cb () in mini-llvm.c as to why this is needed */
1652 for (i = 0; i < ei_len; ++i) {
1653 gint32 cindex1 = read32 (type_info [i]);
1656 for (l = nesting [cindex1]; l; l = l->next) {
1657 gint32 nesting_cindex = GPOINTER_TO_INT (l->data);
1659 for (j = 0; j < ei_len; ++j) {
1660 gint32 cindex2 = read32 (type_info [j]);
1662 if (cindex2 == nesting_cindex) {
1664 * The try interval comes from the nested clause, everything else from the
1667 memcpy (&jinfo->clauses [nindex], &jinfo->clauses [j], sizeof (MonoJitExceptionInfo));
1668 jinfo->clauses [nindex].try_start = jinfo->clauses [i].try_start;
1669 jinfo->clauses [nindex].try_end = jinfo->clauses [i].try_end;
1675 g_assert (nindex == ei_len + nested_len);
1681 * LOCKING: Acquires the domain lock.
1684 decode_exception_debug_info (MonoAotModule *amodule, MonoDomain *domain,
1685 MonoMethod *method, guint8* ex_info, guint8 *addr,
1686 guint8 *code, guint32 code_len)
1688 int i, buf_len, num_clauses;
1690 guint used_int_regs, flags;
1691 gboolean has_generic_jit_info, has_dwarf_unwind_info, has_clauses, has_seq_points, has_try_block_holes;
1694 int generic_info_size, try_holes_info_size, num_holes, this_reg, this_offset;
1696 /* Load the method info from the AOT file */
1699 flags = decode_value (p, &p);
1700 has_generic_jit_info = (flags & 1) != 0;
1701 has_dwarf_unwind_info = (flags & 2) != 0;
1702 has_clauses = (flags & 4) != 0;
1703 has_seq_points = (flags & 8) != 0;
1704 from_llvm = (flags & 16) != 0;
1705 has_try_block_holes = (flags & 32) != 0;
1707 if (has_dwarf_unwind_info) {
1710 offset = decode_value (p, &p);
1711 g_assert (offset < (1 << 30));
1712 used_int_regs = offset;
1714 used_int_regs = decode_value (p, &p);
1716 if (has_generic_jit_info)
1717 generic_info_size = sizeof (MonoGenericJitInfo);
1719 generic_info_size = 0;
1721 if (has_try_block_holes) {
1722 num_holes = decode_value (p, &p);
1723 try_holes_info_size = sizeof (MonoTryBlockHoleTableJitInfo) + num_holes * sizeof (MonoTryBlockHoleJitInfo);
1725 num_holes = try_holes_info_size = 0;
1727 /* Exception table */
1729 num_clauses = decode_value (p, &p);
1734 MonoJitExceptionInfo *clauses;
1738 * Part of the info is encoded by the AOT compiler, the rest is in the .eh_frame
1741 clauses = g_new0 (MonoJitExceptionInfo, num_clauses);
1742 nesting = g_new0 (GSList*, num_clauses);
1744 for (i = 0; i < num_clauses; ++i) {
1745 MonoJitExceptionInfo *ei = &clauses [i];
1747 ei->flags = decode_value (p, &p);
1749 if (decode_value (p, &p))
1750 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
1752 /* Read the list of nesting clauses */
1754 int nesting_index = decode_value (p, &p);
1755 if (nesting_index == -1)
1757 nesting [i] = g_slist_prepend (nesting [i], GINT_TO_POINTER (nesting_index));
1761 jinfo = decode_llvm_mono_eh_frame (amodule, domain, method, code, clauses, num_clauses, generic_info_size + try_holes_info_size, nesting, &this_reg, &this_offset);
1762 jinfo->from_llvm = 1;
1765 for (i = 0; i < num_clauses; ++i)
1766 g_slist_free (nesting [i]);
1770 mono_domain_alloc0 (domain, MONO_SIZEOF_JIT_INFO + (sizeof (MonoJitExceptionInfo) * num_clauses) + generic_info_size + try_holes_info_size);
1771 jinfo->num_clauses = num_clauses;
1773 for (i = 0; i < jinfo->num_clauses; ++i) {
1774 MonoJitExceptionInfo *ei = &jinfo->clauses [i];
1776 ei->flags = decode_value (p, &p);
1778 ei->exvar_offset = decode_value (p, &p);
1780 if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER || ei->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
1781 ei->data.filter = code + decode_value (p, &p);
1783 if (decode_value (p, &p))
1784 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
1787 ei->try_start = code + decode_value (p, &p);
1788 ei->try_end = code + decode_value (p, &p);
1789 ei->handler_start = code + decode_value (p, &p);
1792 jinfo->code_size = code_len;
1793 jinfo->used_regs = used_int_regs;
1794 jinfo->method = method;
1795 jinfo->code_start = code;
1796 jinfo->domain_neutral = 0;
1797 jinfo->from_aot = 1;
1800 if (has_generic_jit_info) {
1801 MonoGenericJitInfo *gi;
1803 jinfo->has_generic_jit_info = 1;
1805 gi = mono_jit_info_get_generic_jit_info (jinfo);
1809 gi->has_this = this_reg != -1;
1810 gi->this_reg = this_reg;
1811 gi->this_offset = this_offset;
1813 gi->has_this = decode_value (p, &p);
1814 gi->this_reg = decode_value (p, &p);
1815 gi->this_offset = decode_value (p, &p);
1818 /* This currently contains no data */
1819 gi->generic_sharing_context = g_new0 (MonoGenericSharingContext, 1);
1821 jinfo->method = decode_resolve_method_ref (amodule, p, &p);
1824 if (has_try_block_holes) {
1825 MonoTryBlockHoleTableJitInfo *table;
1827 jinfo->has_try_block_holes = 1;
1829 table = mono_jit_info_get_try_block_hole_table_info (jinfo);
1832 table->num_holes = (guint16)num_holes;
1833 for (i = 0; i < num_holes; ++i) {
1834 MonoTryBlockHoleJitInfo *hole = &table->holes [i];
1835 hole->clause = decode_value (p, &p);
1836 hole->length = decode_value (p, &p);
1837 hole->offset = decode_value (p, &p);
1841 if (has_seq_points) {
1842 MonoSeqPointInfo *seq_points;
1843 int il_offset, native_offset, last_il_offset, last_native_offset, j;
1845 int len = decode_value (p, &p);
1847 seq_points = g_malloc0 (sizeof (MonoSeqPointInfo) + (len - MONO_ZERO_LEN_ARRAY) * sizeof (SeqPoint));
1848 seq_points->len = len;
1849 last_il_offset = last_native_offset = 0;
1850 for (i = 0; i < len; ++i) {
1851 SeqPoint *sp = &seq_points->seq_points [i];
1852 il_offset = last_il_offset + decode_value (p, &p);
1853 native_offset = last_native_offset + decode_value (p, &p);
1855 sp->il_offset = il_offset;
1856 sp->native_offset = native_offset;
1858 sp->next_len = decode_value (p, &p);
1859 sp->next = g_new (int, sp->next_len);
1860 for (j = 0; j < sp->next_len; ++j)
1861 sp->next [j] = decode_value (p, &p);
1863 last_il_offset = il_offset;
1864 last_native_offset = native_offset;
1867 mono_domain_lock (domain);
1868 g_hash_table_insert (domain_jit_info (domain)->seq_points, method, seq_points);
1869 mono_domain_unlock (domain);
1872 /* Load debug info */
1873 buf_len = decode_value (p, &p);
1874 mono_debug_add_aot_method (domain, method, code, p, buf_len);
1876 if (amodule != jinfo->method->klass->image->aot_module) {
1879 ji_to_amodule = g_hash_table_new (NULL, NULL);
1880 g_hash_table_insert (ji_to_amodule, jinfo, amodule);
1888 * mono_aot_get_unwind_info:
1890 * Return a pointer to the DWARF unwind info belonging to JI.
1893 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
1895 MonoAotModule *amodule = ji->method->klass->image->aot_module;
1897 guint8 *code = ji->code_start;
1900 g_assert (ji->from_aot);
1902 if (!(code >= amodule->code && code <= amodule->code_end)) {
1903 /* ji belongs to a different aot module than amodule */
1905 g_assert (ji_to_amodule);
1906 amodule = g_hash_table_lookup (ji_to_amodule, ji);
1908 g_assert (code >= amodule->code && code <= amodule->code_end);
1912 p = amodule->unwind_info + ji->used_regs;
1913 *unwind_info_len = decode_value (p, &p);
1917 static G_GNUC_UNUSED int
1918 compare_ints (const void *a, const void *b)
1920 return *(gint32*)a - *(gint32*)b;
1924 msort_code_offsets_internal (gint32 *array, int lo, int hi, gint32 *scratch)
1926 int mid = (lo + hi) / 2;
1933 for (i = lo; i < hi; ++i)
1934 if (array [(i * 2)] > array [(i * 2) + 2])
1937 /* Already sorted */
1941 msort_code_offsets_internal (array, lo, mid, scratch);
1942 msort_code_offsets_internal (array, mid + 1, hi, scratch);
1944 if (array [mid * 2] < array [(mid + 1) * 2])
1950 for (i = lo; i <= hi; i ++) {
1951 if (t_lo <= mid && ((t_hi > hi) || array [t_lo * 2] < array [t_hi * 2])) {
1952 scratch [(i * 2)] = array [t_lo * 2];
1953 scratch [(i * 2) + 1] = array [(t_lo *2) + 1];
1956 scratch [(i * 2)] = array [t_hi * 2];
1957 scratch [(i * 2) + 1] = array [(t_hi *2) + 1];
1961 for (i = lo; i <= hi; ++i) {
1962 array [(i * 2)] = scratch [i * 2];
1963 array [(i * 2) + 1] = scratch [(i * 2) + 1];
1968 msort_code_offsets (gint32 *array, int len)
1972 scratch = g_new (gint32, len * 2);
1973 msort_code_offsets_internal (array, 0, len - 1, scratch);
1978 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
1980 int pos, left, right, offset, offset1, offset2, code_len;
1981 int method_index, table_len, is_wrapper;
1983 MonoAotModule *amodule = image->aot_module;
1986 guint8 *code, *ex_info, *p;
1988 int nmethods = amodule->info.nmethods;
1989 gint32 *code_offsets;
1995 if (domain != mono_get_root_domain ())
1999 offset = (guint8*)addr - amodule->code;
2001 /* Compute a sorted table mapping code offsets to method indexes. */
2002 if (!amodule->sorted_code_offsets) {
2004 code_offsets = g_new0 (gint32, nmethods * 2);
2006 for (i = 0; i < nmethods; ++i) {
2007 /* Skip the -1 entries to speed up sorting */
2008 if (amodule->code_offsets [i] == 0xffffffff)
2010 code_offsets [(offsets_len * 2)] = amodule->code_offsets [i];
2011 code_offsets [(offsets_len *2) + 1] = i;
2014 /* Use a merge sort as this is mostly sorted */
2015 msort_code_offsets (code_offsets, offsets_len);
2016 //qsort (code_offsets, offsets_len, sizeof (gint32) * 2, compare_ints);
2017 for (i = 0; i < offsets_len -1; ++i)
2018 g_assert (code_offsets [(i * 2)] <= code_offsets [(i + 1) * 2]);
2020 if (InterlockedCompareExchangePointer ((gpointer*)&amodule->sorted_code_offsets, code_offsets, NULL) != NULL)
2021 /* Somebody got in before us */
2022 g_free (code_offsets);
2023 amodule->sorted_code_offsets_len = offsets_len;
2026 code_offsets = amodule->sorted_code_offsets;
2027 offsets_len = amodule->sorted_code_offsets_len;
2029 /* Binary search in the sorted_code_offsets table */
2031 right = offsets_len;
2033 pos = (left + right) / 2;
2035 offset1 = code_offsets [(pos * 2)];
2036 if (pos + 1 == offsets_len)
2037 offset2 = amodule->code_end - amodule->code;
2039 offset2 = code_offsets [(pos + 1) * 2];
2041 if (offset < offset1)
2043 else if (offset >= offset2)
2049 g_assert (offset >= code_offsets [(pos * 2)]);
2050 if (pos + 1 < offsets_len)
2051 g_assert (offset < code_offsets [((pos + 1) * 2)]);
2052 method_index = code_offsets [(pos * 2) + 1];
2054 code = &amodule->code [amodule->code_offsets [method_index]];
2055 ex_info = &amodule->blob [mono_aot_get_offset (amodule->ex_info_offsets, method_index)];
2057 if (pos == offsets_len - 1)
2058 code_len = amodule->code_end - code;
2060 code_len = code_offsets [(pos + 1) * 2] - code_offsets [pos * 2];
2062 g_assert ((guint8*)code <= (guint8*)addr && (guint8*)addr < (guint8*)code + code_len);
2064 /* Might be a wrapper/extra method */
2065 if (amodule->extra_methods) {
2067 method = g_hash_table_lookup (amodule->extra_methods, GUINT_TO_POINTER (method_index));
2074 if (method_index >= image->tables [MONO_TABLE_METHOD].rows) {
2076 * This is hit for extra methods which are called directly, so they are
2077 * not in amodule->extra_methods.
2079 table_len = amodule->extra_method_info_offsets [0];
2080 table = amodule->extra_method_info_offsets + 1;
2087 pos = ((left + right) / 2);
2089 g_assert (pos < table_len);
2091 if (table [pos * 2] < method_index)
2093 else if (table [pos * 2] > method_index)
2099 p = amodule->blob + table [(pos * 2) + 1];
2100 is_wrapper = decode_value (p, &p);
2101 g_assert (!is_wrapper);
2102 method = decode_resolve_method_ref (amodule, p, &p);
2105 token = mono_metadata_make_token (MONO_TABLE_METHOD, method_index + 1);
2106 method = mono_get_method (image, token, NULL);
2113 //printf ("F: %s\n", mono_method_full_name (method, TRUE));
2115 jinfo = decode_exception_debug_info (amodule, domain, method, ex_info, addr, code, code_len);
2117 g_assert ((guint8*)addr >= (guint8*)jinfo->code_start);
2118 g_assert ((guint8*)addr < (guint8*)jinfo->code_start + jinfo->code_size);
2120 /* Add it to the normal JitInfo tables */
2121 mono_jit_info_table_add (domain, jinfo);
2127 decode_patch (MonoAotModule *aot_module, MonoMemPool *mp, MonoJumpInfo *ji, guint8 *buf, guint8 **endbuf)
2135 case MONO_PATCH_INFO_METHOD:
2136 case MONO_PATCH_INFO_METHOD_JUMP:
2137 case MONO_PATCH_INFO_ICALL_ADDR:
2138 case MONO_PATCH_INFO_METHOD_RGCTX: {
2142 res = decode_method_ref (aot_module, &ref, p, &p);
2146 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)) {
2147 ji->data.target = mono_create_ftnptr (mono_domain_get (), mono_create_jit_trampoline_from_token (ref.image, ref.token));
2148 ji->type = MONO_PATCH_INFO_ABS;
2152 ji->data.method = ref.method;
2154 ji->data.method = mono_get_method (ref.image, ref.token, NULL);
2155 g_assert (ji->data.method);
2156 mono_class_init (ji->data.method->klass);
2160 case MONO_PATCH_INFO_INTERNAL_METHOD:
2161 case MONO_PATCH_INFO_JIT_ICALL_ADDR: {
2162 guint32 len = decode_value (p, &p);
2164 ji->data.name = (char*)p;
2168 case MONO_PATCH_INFO_METHODCONST:
2170 ji->data.method = decode_resolve_method_ref (aot_module, p, &p);
2171 if (!ji->data.method)
2174 case MONO_PATCH_INFO_VTABLE:
2175 case MONO_PATCH_INFO_CLASS:
2176 case MONO_PATCH_INFO_IID:
2177 case MONO_PATCH_INFO_ADJUSTED_IID:
2179 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2180 if (!ji->data.klass)
2183 case MONO_PATCH_INFO_CLASS_INIT:
2184 case MONO_PATCH_INFO_DELEGATE_TRAMPOLINE:
2185 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2186 if (!ji->data.klass)
2189 case MONO_PATCH_INFO_IMAGE:
2190 ji->data.image = load_image (aot_module, decode_value (p, &p), TRUE);
2191 if (!ji->data.image)
2194 case MONO_PATCH_INFO_FIELD:
2195 case MONO_PATCH_INFO_SFLDA:
2197 ji->data.field = decode_field_info (aot_module, p, &p);
2198 if (!ji->data.field)
2201 case MONO_PATCH_INFO_SWITCH:
2202 ji->data.table = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoBBTable));
2203 ji->data.table->table_size = decode_value (p, &p);
2204 table = mono_domain_alloc (mono_domain_get (), sizeof (gpointer) * ji->data.table->table_size);
2205 ji->data.table->table = (MonoBasicBlock**)table;
2206 for (i = 0; i < ji->data.table->table_size; i++)
2207 table [i] = (gpointer)(gssize)decode_value (p, &p);
2209 case MONO_PATCH_INFO_R4: {
2212 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (float));
2213 val = decode_value (p, &p);
2214 *(float*)ji->data.target = *(float*)&val;
2217 case MONO_PATCH_INFO_R8: {
2221 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (double));
2223 val [0] = decode_value (p, &p);
2224 val [1] = decode_value (p, &p);
2225 v = ((guint64)val [1] << 32) | ((guint64)val [0]);
2226 *(double*)ji->data.target = *(double*)&v;
2229 case MONO_PATCH_INFO_LDSTR:
2230 image = load_image (aot_module, decode_value (p, &p), TRUE);
2233 ji->data.token = mono_jump_info_token_new (mp, image, MONO_TOKEN_STRING + decode_value (p, &p));
2235 case MONO_PATCH_INFO_RVA:
2236 case MONO_PATCH_INFO_DECLSEC:
2237 case MONO_PATCH_INFO_LDTOKEN:
2238 case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
2240 image = load_image (aot_module, decode_value (p, &p), TRUE);
2243 ji->data.token = mono_jump_info_token_new (mp, image, decode_value (p, &p));
2245 ji->data.token->has_context = decode_value (p, &p);
2246 if (ji->data.token->has_context) {
2247 gboolean res = decode_generic_context (aot_module, &ji->data.token->context, p, &p);
2252 case MONO_PATCH_INFO_EXC_NAME:
2253 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2254 if (!ji->data.klass)
2256 ji->data.name = ji->data.klass->name;
2258 case MONO_PATCH_INFO_METHOD_REL:
2259 ji->data.offset = decode_value (p, &p);
2261 case MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG:
2262 case MONO_PATCH_INFO_GENERIC_CLASS_INIT:
2263 case MONO_PATCH_INFO_MONITOR_ENTER:
2264 case MONO_PATCH_INFO_MONITOR_EXIT:
2265 case MONO_PATCH_INFO_GC_CARD_TABLE_ADDR:
2267 case MONO_PATCH_INFO_RGCTX_FETCH: {
2269 MonoJumpInfoRgctxEntry *entry;
2271 entry = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
2272 entry->method = decode_resolve_method_ref (aot_module, p, &p);
2273 entry->in_mrgctx = decode_value (p, &p);
2274 entry->info_type = decode_value (p, &p);
2275 entry->data = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
2276 entry->data->type = decode_value (p, &p);
2278 res = decode_patch (aot_module, mp, entry->data, p, &p);
2281 ji->data.rgctx_entry = entry;
2284 case MONO_PATCH_INFO_SEQ_POINT_INFO:
2286 case MONO_PATCH_INFO_LLVM_IMT_TRAMPOLINE: {
2287 MonoJumpInfoImtTramp *imt_tramp = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoImtTramp));
2289 imt_tramp->method = decode_resolve_method_ref (aot_module, p, &p);
2290 imt_tramp->vt_offset = decode_value (p, &p);
2292 ji->data.imt_tramp = imt_tramp;
2296 g_warning ("unhandled type %d", ji->type);
2297 g_assert_not_reached ();
2308 static MonoJumpInfo*
2309 load_patch_info (MonoAotModule *aot_module, MonoMemPool *mp, int n_patches,
2310 guint32 **got_slots,
2311 guint8 *buf, guint8 **endbuf)
2313 MonoJumpInfo *patches;
2319 patches = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo) * n_patches);
2321 *got_slots = g_malloc (sizeof (guint32) * n_patches);
2323 for (pindex = 0; pindex < n_patches; ++pindex) {
2324 MonoJumpInfo *ji = &patches [pindex];
2329 got_offset = decode_value (p, &p);
2331 if (aot_module->got [got_offset]) {
2332 /* Already loaded */
2333 //printf ("HIT!\n");
2335 shared_p = aot_module->blob + mono_aot_get_offset (aot_module->got_info_offsets, got_offset);
2337 ji->type = decode_value (shared_p, &shared_p);
2339 res = decode_patch (aot_module, mp, ji, shared_p, &shared_p);
2344 (*got_slots) [pindex] = got_offset;
2351 g_free (*got_slots);
2358 register_jump_target_got_slot (MonoDomain *domain, MonoMethod *method, gpointer *got_slot)
2361 * Jump addresses cannot be patched by the trampoline code since it
2362 * does not have access to the caller's address. Instead, we collect
2363 * the addresses of the GOT slots pointing to a method, and patch
2364 * them after the method has been compiled.
2366 MonoJitDomainInfo *info = domain_jit_info (domain);
2369 mono_domain_lock (domain);
2370 if (!info->jump_target_got_slot_hash)
2371 info->jump_target_got_slot_hash = g_hash_table_new (NULL, NULL);
2372 list = g_hash_table_lookup (info->jump_target_got_slot_hash, method);
2373 list = g_slist_prepend (list, got_slot);
2374 g_hash_table_insert (info->jump_target_got_slot_hash, method, list);
2375 mono_domain_unlock (domain);
2381 * Load the method identified by METHOD_INDEX from the AOT image. Return a
2382 * pointer to the native code of the method, or NULL if not found.
2383 * METHOD might not be set if the caller only has the image/token info.
2386 load_method (MonoDomain *domain, MonoAotModule *amodule, MonoImage *image, MonoMethod *method, guint32 token, int method_index)
2389 gboolean from_plt = method == NULL;
2391 int i, pindex, n_patches, used_strings;
2392 gboolean keep_patches = TRUE;
2394 MonoJitInfo *jinfo = NULL;
2395 guint8 *code, *info;
2397 if (mono_profiler_get_events () & MONO_PROFILE_ENTER_LEAVE)
2400 if ((domain != mono_get_root_domain ()) && (!(amodule->info.opts & MONO_OPT_SHARED)))
2401 /* Non shared AOT code can't be used in other appdomains */
2404 if (amodule->out_of_date)
2407 if (amodule->code_offsets [method_index] == 0xffffffff) {
2408 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
2412 method = mono_get_method (image, token, NULL);
2413 full_name = mono_method_full_name (method, TRUE);
2414 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.\n", full_name);
2420 code = &amodule->code [amodule->code_offsets [method_index]];
2422 info = &amodule->blob [mono_aot_get_offset (amodule->method_info_offsets, method_index)];
2425 if (!amodule->methods_loaded)
2426 amodule->methods_loaded = g_new0 (guint32, amodule->info.nmethods + 1);
2429 if ((amodule->methods_loaded [method_index / 32] >> (method_index % 32)) & 0x1)
2432 if (mono_last_aot_method != -1) {
2433 if (mono_jit_stats.methods_aot >= mono_last_aot_method)
2435 else if (mono_jit_stats.methods_aot == mono_last_aot_method - 1) {
2437 method = mono_get_method (image, token, NULL);
2439 char *name = mono_method_full_name (method, TRUE);
2440 printf ("LAST AOT METHOD: %s.\n", name);
2443 printf ("LAST AOT METHOD: %p %d\n", code, method_index);
2451 klass = method->klass;
2452 decode_klass_ref (amodule, p, &p);
2454 klass = decode_klass_ref (amodule, p, &p);
2457 if (amodule->info.opts & MONO_OPT_SHARED)
2458 used_strings = decode_value (p, &p);
2462 for (i = 0; i < used_strings; i++) {
2463 guint token = decode_value (p, &p);
2464 mono_ldstr (mono_get_root_domain (), image, mono_metadata_token_index (token));
2467 if (amodule->info.opts & MONO_OPT_SHARED)
2468 keep_patches = FALSE;
2470 n_patches = decode_value (p, &p);
2472 keep_patches = FALSE;
2475 MonoJumpInfo *patches;
2481 mp = mono_mempool_new ();
2483 patches = load_patch_info (amodule, mp, n_patches, &got_slots, p, &p);
2484 if (patches == NULL)
2487 for (pindex = 0; pindex < n_patches; ++pindex) {
2488 MonoJumpInfo *ji = &patches [pindex];
2490 if (!amodule->got [got_slots [pindex]]) {
2491 amodule->got [got_slots [pindex]] = mono_resolve_patch_target (method, domain, code, ji, TRUE);
2492 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
2493 amodule->got [got_slots [pindex]] = mono_create_ftnptr (domain, amodule->got [got_slots [pindex]]);
2494 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
2495 register_jump_target_got_slot (domain, ji->data.method, &(amodule->got [got_slots [pindex]]));
2497 ji->type = MONO_PATCH_INFO_NONE;
2503 mono_mempool_destroy (mp);
2506 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
2510 method = mono_get_method (image, token, NULL);
2512 full_name = mono_method_full_name (method, TRUE);
2515 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
2517 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT FOUND AOT compiled code for %s %p - %p %p\n", full_name, code, code + jinfo->code_size, info);
2523 mono_jit_stats.methods_aot++;
2525 amodule->methods_loaded [method_index / 32] |= 1 << (method_index % 32);
2529 if (method && method->wrapper_type)
2530 g_hash_table_insert (amodule->method_to_code, method, code);
2534 if (mono_profiler_get_events () & MONO_PROFILE_JIT_COMPILATION) {
2538 method = mono_get_method (image, token, NULL);
2541 mono_profiler_method_jit (method);
2542 jinfo = mono_jit_info_table_find (domain, (char*)code);
2544 mono_profiler_method_end_jit (method, jinfo, MONO_PROFILE_OK);
2547 if (from_plt && klass && !klass->generic_container)
2548 mono_runtime_class_init (mono_class_vtable (domain, klass));
2553 /* FIXME: The space in domain->mp is wasted */
2554 if (amodule->info.opts & MONO_OPT_SHARED)
2555 /* No need to cache patches */
2556 mono_mempool_destroy (mp);
2565 find_extra_method_in_amodule (MonoAotModule *amodule, MonoMethod *method, const char *name)
2567 guint32 table_size, entry_size, hash;
2568 guint32 *table, *entry;
2570 static guint32 n_extra_decodes;
2575 table_size = amodule->extra_method_table [0];
2576 table = amodule->extra_method_table + 1;
2579 hash = mono_aot_method_hash (method) % table_size;
2581 entry = &table [hash * entry_size];
2588 guint32 key = entry [0];
2589 guint32 value = entry [1];
2590 guint32 next = entry [entry_size - 1];
2593 int is_wrapper_name;
2595 p = amodule->blob + key;
2596 is_wrapper_name = decode_value (p, &p);
2597 if (is_wrapper_name) {
2598 int wrapper_type = decode_value (p, &p);
2599 if (wrapper_type == method->wrapper_type && !strcmp (name, (char*)p)) {
2607 if (!amodule->method_ref_to_method)
2608 amodule->method_ref_to_method = g_hash_table_new (NULL, NULL);
2609 m = g_hash_table_lookup (amodule->method_ref_to_method, p);
2612 m = decode_resolve_method_ref_with_target (amodule, method, p, &p);
2615 g_hash_table_insert (amodule->method_ref_to_method, orig_p, m);
2624 /* Special case: wrappers of shared generic methods */
2625 if (m && method->wrapper_type && m->wrapper_type == m->wrapper_type &&
2626 method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
2627 MonoMethod *w1 = mono_marshal_method_from_wrapper (method);
2628 MonoMethod *w2 = mono_marshal_method_from_wrapper (m);
2630 if (w1->is_inflated && ((MonoMethodInflated *)w1)->declaring == w2) {
2636 /* Methods decoded needlessly */
2638 //printf ("%d %s %s %p\n", n_extra_decodes, mono_method_full_name (method, TRUE), mono_method_full_name (m, TRUE), orig_p);
2644 entry = &table [next * entry_size];
2653 add_module_cb (gpointer key, gpointer value, gpointer user_data)
2655 g_ptr_array_add ((GPtrArray*)user_data, value);
2659 * find_extra_method:
2661 * Try finding METHOD in the extra_method table in all AOT images.
2662 * Return its method index, or 0xffffff if not found. Set OUT_AMODULE to the AOT
2663 * module where the method was found.
2666 find_extra_method (MonoMethod *method, MonoAotModule **out_amodule)
2673 if (method->wrapper_type)
2674 name = mono_aot_wrapper_name (method);
2676 /* Try the method's module first */
2677 *out_amodule = method->klass->image->aot_module;
2678 index = find_extra_method_in_amodule (method->klass->image->aot_module, method, name);
2679 if (index != 0xffffff) {
2685 * Try all other modules.
2686 * This is needed because generic instances klass->image points to the image
2687 * containing the generic definition, but the native code is generated to the
2688 * AOT image which contains the reference.
2691 /* Make a copy to avoid doing the search inside the aot lock */
2692 modules = g_ptr_array_new ();
2694 g_hash_table_foreach (aot_modules, add_module_cb, modules);
2698 for (i = 0; i < modules->len; ++i) {
2699 MonoAotModule *amodule = g_ptr_array_index (modules, i);
2701 if (amodule != method->klass->image->aot_module)
2702 index = find_extra_method_in_amodule (amodule, method, name);
2703 if (index != 0xffffff) {
2704 *out_amodule = amodule;
2709 g_ptr_array_free (modules, TRUE);
2716 * mono_aot_get_method:
2718 * Return a pointer to the AOTed native code for METHOD if it can be found,
2720 * On platforms with function pointers, this doesn't return a function pointer.
2723 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
2725 MonoClass *klass = method->klass;
2726 guint32 method_index;
2727 MonoAotModule *amodule = klass->image->aot_module;
2733 if (amodule->out_of_date)
2736 if ((method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
2737 (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
2738 (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
2739 (method->flags & METHOD_ATTRIBUTE_ABSTRACT))
2743 * Use the original method instead of its invoke-with-check wrapper.
2744 * This is not a problem when using full-aot, since it doesn't support
2747 if (mono_aot_only && method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)
2748 return mono_aot_get_method (domain, mono_marshal_method_from_wrapper (method));
2750 g_assert (klass->inited);
2752 /* Find method index */
2753 if (method->is_inflated && mono_method_is_generic_sharable_impl_full (method, FALSE, FALSE)) {
2755 * For generic methods, we store the fully shared instance in place of the
2758 method = mono_method_get_declaring_generic_method (method);
2759 method_index = mono_metadata_token_index (method->token) - 1;
2760 } else if (method->is_inflated || !method->token) {
2761 /* This hash table is used to avoid the slower search in the extra_method_table in the AOT image */
2763 code = g_hash_table_lookup (amodule->method_to_code, method);
2768 method_index = find_extra_method (method, &amodule);
2770 * Special case the ICollection<T> wrappers for arrays, as they cannot
2771 * be statically enumerated, and each wrapper ends up calling the same
2774 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED && method->klass->rank && strstr (method->name, "System.Collections.Generic")) {
2775 MonoMethod *m = mono_aot_get_array_helper_from_wrapper (method);
2777 code = mono_aot_get_method (domain, m);
2779 if (mono_method_needs_static_rgctx_invoke (m, FALSE)) {
2780 code = mono_create_static_rgctx_trampoline (m, mono_create_ftnptr (domain, code));
2781 /* The call above returns an ftnptr */
2782 code = mono_get_addr_from_ftnptr (code);
2790 * Special case Array.GetGenericValueImpl which is a generic icall.
2791 * Generic sharing currently can't handle it, but the icall returns data using
2792 * an out parameter, so the managed-to-native wrappers can share the same code.
2794 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass == mono_defaults.array_class && !strcmp (method->name, "GetGenericValueImpl")) {
2796 MonoGenericContext ctx;
2797 MonoType *args [16];
2799 if (mono_method_signature (method)->params [1]->type == MONO_TYPE_OBJECT)
2800 /* Avoid recursion */
2803 m = mono_class_get_method_from_name (mono_defaults.array_class, "GetGenericValueImpl", 2);
2806 memset (&ctx, 0, sizeof (ctx));
2807 args [0] = &mono_defaults.object_class->byval_arg;
2808 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
2810 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method (m, &ctx), TRUE, TRUE);
2813 * Get the code for the <object> instantiation which should be emitted into
2814 * the mscorlib aot image by the AOT compiler.
2816 code = mono_aot_get_method (domain, m);
2821 /* Same for CompareExchange<T> */
2822 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass->image == mono_defaults.corlib && !strcmp (method->klass->name_space, "System.Threading") && !strcmp (method->klass->name, "Interlocked") && !strcmp (method->name, "CompareExchange")) {
2824 MonoGenericContext ctx;
2825 MonoType *args [16];
2826 gpointer iter = NULL;
2828 while ((m = mono_class_get_methods (method->klass, &iter))) {
2829 if (mono_method_signature (m)->generic_param_count && !strcmp (m->name, "CompareExchange"))
2834 memset (&ctx, 0, sizeof (ctx));
2835 args [0] = &mono_defaults.object_class->byval_arg;
2836 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
2838 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method (m, &ctx), TRUE, TRUE);
2840 /* Avoid recursion */
2845 * Get the code for the <object> instantiation which should be emitted into
2846 * the mscorlib aot image by the AOT compiler.
2848 code = mono_aot_get_method (domain, m);
2853 if (method_index == 0xffffff && method->is_inflated && mono_method_is_generic_sharable_impl_full (method, FALSE, TRUE)) {
2854 /* Partial sharing */
2855 method_index = find_extra_method (mini_get_shared_method (method), &amodule);
2858 if (method_index == 0xffffff) {
2859 if (mono_aot_only && mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
2862 full_name = mono_method_full_name (method, TRUE);
2863 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.\n", full_name);
2869 if (method_index == 0xffffff)
2872 /* Needed by find_jit_info */
2874 if (!amodule->extra_methods)
2875 amodule->extra_methods = g_hash_table_new (NULL, NULL);
2876 g_hash_table_insert (amodule->extra_methods, GUINT_TO_POINTER (method_index), method);
2880 method_index = mono_metadata_token_index (method->token) - 1;
2883 return load_method (domain, amodule, klass->image, method, method->token, method_index);
2887 * Same as mono_aot_get_method, but we try to avoid loading any metadata from the
2891 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
2893 MonoAotModule *aot_module = image->aot_module;
2899 method_index = mono_metadata_token_index (token) - 1;
2901 return load_method (domain, aot_module, image, NULL, token, method_index);
2907 } IsGotEntryUserData;
2910 check_is_got_entry (gpointer key, gpointer value, gpointer user_data)
2912 IsGotEntryUserData *data = (IsGotEntryUserData*)user_data;
2913 MonoAotModule *aot_module = (MonoAotModule*)value;
2915 if (aot_module->got && (data->addr >= (guint8*)(aot_module->got)) && (data->addr < (guint8*)(aot_module->got + aot_module->info.got_size)))
2920 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
2922 IsGotEntryUserData user_data;
2927 user_data.addr = addr;
2928 user_data.res = FALSE;
2930 g_hash_table_foreach (aot_modules, check_is_got_entry, &user_data);
2933 return user_data.res;
2938 MonoAotModule *module;
2939 } FindAotModuleUserData;
2942 find_aot_module_cb (gpointer key, gpointer value, gpointer user_data)
2944 FindAotModuleUserData *data = (FindAotModuleUserData*)user_data;
2945 MonoAotModule *aot_module = (MonoAotModule*)value;
2947 if ((data->addr >= (guint8*)(aot_module->code)) && (data->addr < (guint8*)(aot_module->code_end)))
2948 data->module = aot_module;
2951 static inline MonoAotModule*
2952 find_aot_module (guint8 *code)
2954 FindAotModuleUserData user_data;
2959 /* Reading these need no locking */
2960 if (((gsize)code < aot_code_low_addr) || ((gsize)code > aot_code_high_addr))
2963 user_data.addr = code;
2964 user_data.module = NULL;
2967 g_hash_table_foreach (aot_modules, find_aot_module_cb, &user_data);
2970 return user_data.module;
2974 mono_aot_patch_plt_entry (guint8 *code, gpointer *got, mgreg_t *regs, guint8 *addr)
2977 * Since AOT code is only used in the root domain,
2978 * mono_domain_get () != mono_get_root_domain () means the calling method
2979 * is AppDomain:InvokeInDomain, so this is the same check as in
2980 * mono_method_same_domain () but without loading the metadata for the method.
2982 if (mono_domain_get () == mono_get_root_domain ())
2983 mono_arch_patch_plt_entry (code, got, regs, addr);
2987 * mono_aot_plt_resolve:
2989 * This function is called by the entries in the PLT to resolve the actual method that
2990 * needs to be called. It returns a trampoline to the method and patches the PLT entry.
2991 * Returns NULL if the something cannot be loaded.
2994 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
2996 #ifdef MONO_ARCH_AOT_SUPPORTED
2997 guint8 *p, *target, *plt_entry;
2999 MonoAotModule *module = (MonoAotModule*)aot_module;
3000 gboolean res, no_ftnptr = FALSE;
3003 //printf ("DYN: %p %d\n", aot_module, plt_info_offset);
3005 p = &module->blob [plt_info_offset];
3007 ji.type = decode_value (p, &p);
3009 mp = mono_mempool_new_size (512);
3010 res = decode_patch (module, mp, &ji, p, &p);
3013 mono_mempool_destroy (mp);
3018 * Avoid calling resolve_patch_target in the full-aot case if possible, since
3019 * it would create a trampoline, and we don't need that.
3020 * We could do this only if the method does not need the special handling
3021 * in mono_magic_trampoline ().
3023 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) &&
3024 !mono_method_needs_static_rgctx_invoke (ji.data.method, FALSE)) {
3025 target = mono_jit_compile_method (ji.data.method);
3028 target = mono_resolve_patch_target (NULL, mono_domain_get (), NULL, &ji, TRUE);
3032 * The trampoline expects us to return a function descriptor on platforms which use
3033 * it, but resolve_patch_target returns a direct function pointer for some type of
3034 * patches, so have to translate between the two.
3035 * FIXME: Clean this up, but how ?
3037 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) {
3038 /* These should already have a function descriptor */
3039 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3040 /* Our function descriptors have a 0 environment, gcc created ones don't */
3041 if (ji.type != MONO_PATCH_INFO_INTERNAL_METHOD && ji.type != MONO_PATCH_INFO_JIT_ICALL_ADDR && ji.type != MONO_PATCH_INFO_ICALL_ADDR)
3042 g_assert (((gpointer*)target) [2] == 0);
3045 } else if (!no_ftnptr) {
3046 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3047 g_assert (((gpointer*)target) [2] != 0);
3049 target = mono_create_ftnptr (mono_domain_get (), target);
3052 mono_mempool_destroy (mp);
3054 /* Patch the PLT entry with target which might be the actual method not a trampoline */
3055 plt_entry = mono_aot_get_plt_entry (code);
3056 g_assert (plt_entry);
3057 mono_aot_patch_plt_entry (plt_entry, module->got, NULL, target);
3061 g_assert_not_reached ();
3069 * Initialize the PLT table of the AOT module. Called lazily when the first AOT
3070 * method in the module is loaded to avoid committing memory by writing to it.
3071 * LOCKING: Assumes the AOT lock is held.
3074 init_plt (MonoAotModule *amodule)
3079 if (amodule->plt_inited)
3082 tramp = mono_create_specific_trampoline (amodule, MONO_TRAMPOLINE_AOT_PLT, mono_get_root_domain (), NULL);
3085 * Initialize the PLT entries in the GOT to point to the default targets.
3088 tramp = mono_create_ftnptr (mono_domain_get (), tramp);
3089 for (i = 1; i < amodule->info.plt_size; ++i)
3090 /* All the default entries point to the AOT trampoline */
3091 ((gpointer*)amodule->got)[amodule->info.plt_got_offset_base + i] = tramp;
3093 amodule->plt_inited = TRUE;
3097 * mono_aot_get_plt_entry:
3099 * Return the address of the PLT entry called by the code at CODE if exists.
3102 mono_aot_get_plt_entry (guint8 *code)
3104 MonoAotModule *aot_module = find_aot_module (code);
3109 #ifdef MONO_ARCH_AOT_SUPPORTED
3111 guint8 *target = mono_arch_get_call_target (code);
3113 if ((target >= (guint8*)(aot_module->plt)) && (target < (guint8*)(aot_module->plt_end)))
3117 g_assert_not_reached ();
3124 * mono_aot_get_plt_info_offset:
3126 * Return the PLT info offset belonging to the plt entry called by CODE.
3129 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
3131 guint8 *plt_entry = mono_aot_get_plt_entry (code);
3133 g_assert (plt_entry);
3135 /* The offset is embedded inside the code after the plt entry */
3136 #ifdef MONO_ARCH_AOT_SUPPORTED
3137 return mono_arch_get_plt_info_offset (plt_entry, regs, code);
3139 g_assert_not_reached ();
3145 mono_create_ftnptr_malloc (guint8 *code)
3147 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3148 MonoPPCFunctionDescriptor *ftnptr = g_malloc0 (sizeof (MonoPPCFunctionDescriptor));
3150 ftnptr->code = code;
3161 * mono_aot_register_jit_icall:
3163 * Register a JIT icall which is called by trampolines in full-aot mode. This should
3164 * be called from mono_arch_init () during startup.
3167 mono_aot_register_jit_icall (const char *name, gpointer addr)
3169 /* No need for locking */
3170 if (!aot_jit_icall_hash)
3171 aot_jit_icall_hash = g_hash_table_new (g_str_hash, g_str_equal);
3172 g_hash_table_insert (aot_jit_icall_hash, (char*)name, addr);
3178 * Load the function named NAME from the aot image.
3181 load_function (MonoAotModule *amodule, const char *name)
3185 int n_patches, pindex;
3191 symbol = g_strdup_printf ("%s", name);
3192 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&code);
3195 g_error ("Symbol '%s' not found in AOT file '%s'.\n", name, amodule->aot_name);
3197 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT FOUND function '%s' in AOT file '%s'.\n", name, amodule->aot_name);
3201 symbol = g_strdup_printf ("%s_p", name);
3202 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&p);
3205 /* Nothing to patch */
3208 p = amodule->blob + *(guint32*)p;
3210 /* Similar to mono_aot_load_method () */
3212 n_patches = decode_value (p, &p);
3215 MonoJumpInfo *patches;
3218 mp = mono_mempool_new ();
3220 patches = load_patch_info (amodule, mp, n_patches, &got_slots, p, &p);
3223 for (pindex = 0; pindex < n_patches; ++pindex) {
3224 MonoJumpInfo *ji = &patches [pindex];
3227 if (amodule->got [got_slots [pindex]])
3231 * When this code is executed, the runtime may not be initalized yet, so
3232 * resolve the patch info by hand.
3234 if (ji->type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
3235 if (!strcmp (ji->data.name, "mono_get_lmf_addr")) {
3236 target = mono_get_lmf_addr;
3237 } else if (!strcmp (ji->data.name, "mono_thread_force_interruption_checkpoint")) {
3238 target = mono_thread_force_interruption_checkpoint;
3239 } else if (!strcmp (ji->data.name, "mono_exception_from_token")) {
3240 target = mono_exception_from_token;
3241 } else if (!strcmp (ji->data.name, "mono_throw_exception")) {
3242 target = mono_get_throw_exception ();
3243 } else if (strstr (ji->data.name, "trampoline_func_") == ji->data.name) {
3244 int tramp_type2 = atoi (ji->data.name + strlen ("trampoline_func_"));
3245 target = (gpointer)mono_get_trampoline_func (tramp_type2);
3246 } else if (strstr (ji->data.name, "specific_trampoline_lazy_fetch_") == ji->data.name) {
3247 /* atoll is needed because the the offset is unsigned */
3251 res = sscanf (ji->data.name, "specific_trampoline_lazy_fetch_%u", &slot);
3252 g_assert (res == 1);
3253 target = mono_create_specific_trampoline (GUINT_TO_POINTER (slot), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, mono_get_root_domain (), NULL);
3254 target = mono_create_ftnptr_malloc (target);
3255 } else if (!strcmp (ji->data.name, "specific_trampoline_monitor_enter")) {
3256 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_MONITOR_ENTER, mono_get_root_domain (), NULL);
3257 target = mono_create_ftnptr_malloc (target);
3258 } else if (!strcmp (ji->data.name, "specific_trampoline_monitor_exit")) {
3259 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_MONITOR_EXIT, mono_get_root_domain (), NULL);
3260 target = mono_create_ftnptr_malloc (target);
3261 } else if (!strcmp (ji->data.name, "specific_trampoline_generic_class_init")) {
3262 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_GENERIC_CLASS_INIT, mono_get_root_domain (), NULL);
3263 target = mono_create_ftnptr_malloc (target);
3264 } else if (!strcmp (ji->data.name, "mono_thread_get_and_clear_pending_exception")) {
3265 target = mono_thread_get_and_clear_pending_exception;
3266 } else if (strstr (ji->data.name, "generic_trampoline_")) {
3267 target = mono_aot_get_trampoline (ji->data.name);
3268 } else if (aot_jit_icall_hash && g_hash_table_lookup (aot_jit_icall_hash, ji->data.name)) {
3269 /* Registered by mono_arch_init () */
3270 target = g_hash_table_lookup (aot_jit_icall_hash, ji->data.name);
3272 fprintf (stderr, "Unknown relocation '%s'\n", ji->data.name);
3273 g_assert_not_reached ();
3277 /* Hopefully the code doesn't have patches which need method or
3280 target = mono_resolve_patch_target (NULL, NULL, code, ji, FALSE);
3284 amodule->got [got_slots [pindex]] = target;
3289 mono_mempool_destroy (mp);
3296 * Return the trampoline identified by NAME from the mscorlib AOT file.
3297 * On ppc64, this returns a function descriptor.
3300 mono_aot_get_trampoline (const char *name)
3303 MonoAotModule *amodule;
3305 image = mono_defaults.corlib;
3308 amodule = image->aot_module;
3311 return mono_create_ftnptr_malloc (load_function (amodule, name));
3314 /* Return a given kind of trampoline */
3316 get_numerous_trampoline (MonoAotTrampoline tramp_type, int n_got_slots, MonoAotModule **out_amodule, guint32 *got_offset, guint32 *out_tramp_size)
3318 MonoAotModule *amodule;
3319 int index, tramp_size;
3322 /* Currently, we keep all trampolines in the mscorlib AOT image */
3323 image = mono_defaults.corlib;
3328 amodule = image->aot_module;
3331 *out_amodule = amodule;
3333 if (amodule->trampoline_index [tramp_type] == amodule->info.num_trampolines [tramp_type])
3334 g_error ("Ran out of trampolines of type %d in '%s' (%d)\n", tramp_type, image->name, amodule->info.num_trampolines [tramp_type]);
3336 index = amodule->trampoline_index [tramp_type] ++;
3340 *got_offset = amodule->info.trampoline_got_offset_base [tramp_type] + (index * n_got_slots);
3342 tramp_size = amodule->info.trampoline_size [tramp_type];
3345 *out_tramp_size = tramp_size;
3347 return amodule->trampolines [tramp_type] + (index * tramp_size);
3351 * Return a specific trampoline from the AOT file.
3354 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
3356 MonoAotModule *amodule;
3357 guint32 got_offset, tramp_size;
3358 guint8 *code, *tramp;
3359 static gpointer generic_trampolines [MONO_TRAMPOLINE_NUM];
3360 static gboolean inited;
3361 static guint32 num_trampolines;
3367 mono_counters_register ("Specific trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &num_trampolines);
3376 if (!generic_trampolines [tramp_type]) {
3379 symbol = mono_get_generic_trampoline_name (tramp_type);
3380 generic_trampolines [tramp_type] = mono_aot_get_trampoline (symbol);
3384 tramp = generic_trampolines [tramp_type];
3387 code = get_numerous_trampoline (MONO_AOT_TRAMP_SPECIFIC, 2, &amodule, &got_offset, &tramp_size);
3389 amodule->got [got_offset] = tramp;
3390 amodule->got [got_offset + 1] = arg1;
3393 *code_len = tramp_size;
3399 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
3401 MonoAotModule *amodule;
3405 code = get_numerous_trampoline (MONO_AOT_TRAMP_STATIC_RGCTX, 2, &amodule, &got_offset, NULL);
3407 amodule->got [got_offset] = ctx;
3408 amodule->got [got_offset + 1] = addr;
3410 /* The caller expects an ftnptr */
3411 return mono_create_ftnptr (mono_domain_get (), code);
3415 mono_aot_get_unbox_trampoline (MonoMethod *method)
3417 guint32 method_index = mono_metadata_token_index (method->token) - 1;
3418 MonoAotModule *amodule;
3422 if (method->is_inflated && !mono_method_is_generic_sharable_impl (method, FALSE)) {
3423 guint32 index = find_extra_method (method, &amodule);
3424 g_assert (index != 0xffffff);
3426 symbol = g_strdup_printf ("ut_e_%d", index);
3428 amodule = method->klass->image->aot_module;
3431 symbol = g_strdup_printf ("ut_%d", method_index);
3433 code = load_function (amodule, symbol);
3436 /* The caller expects an ftnptr */
3437 return mono_create_ftnptr (mono_domain_get (), code);
3441 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
3446 symbol = mono_get_rgctx_fetch_trampoline_name (slot);
3447 code = load_function (mono_defaults.corlib->aot_module, symbol);
3449 /* The caller expects an ftnptr */
3450 return mono_create_ftnptr (mono_domain_get (), code);
3454 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
3460 MonoAotModule *amodule;
3462 code = get_numerous_trampoline (MONO_AOT_TRAMP_IMT_THUNK, 1, &amodule, &got_offset, NULL);
3464 /* Save the entries into an array */
3465 buf = mono_domain_alloc (domain, (count + 1) * 2 * sizeof (gpointer));
3466 for (i = 0; i < count; ++i) {
3467 MonoIMTCheckItem *item = imt_entries [i];
3469 g_assert (item->key);
3471 g_assert (!item->has_target_code);
3473 buf [(i * 2)] = item->key;
3474 buf [(i * 2) + 1] = &(vtable->vtable [item->value.vtable_slot]);
3476 buf [(count * 2)] = NULL;
3477 buf [(count * 2) + 1] = fail_tramp;
3479 amodule->got [got_offset] = buf;
3485 * mono_aot_set_make_unreadable:
3487 * Set whenever to make all mmaped memory unreadable. In conjuction with a
3488 * SIGSEGV handler, this is useful to find out which pages the runtime tries to read.
3491 mono_aot_set_make_unreadable (gboolean unreadable)
3495 make_unreadable = unreadable;
3497 if (make_unreadable && !inited) {
3498 mono_counters_register ("AOT pagefaults", MONO_COUNTER_JIT | MONO_COUNTER_INT, &n_pagefaults);
3503 MonoAotModule *module;
3508 find_map (gpointer key, gpointer value, gpointer user_data)
3510 MonoAotModule *module = (MonoAotModule*)value;
3511 FindMapUserData *data = (FindMapUserData*)user_data;
3514 if ((data->ptr >= module->mem_begin) && (data->ptr < module->mem_end))
3515 data->module = module;
3518 static MonoAotModule*
3519 find_module_for_addr (void *ptr)
3521 FindMapUserData data;
3523 if (!make_unreadable)
3527 data.ptr = (guint8*)ptr;
3530 g_hash_table_foreach (aot_modules, (GHFunc)find_map, &data);
3537 * mono_aot_is_pagefault:
3539 * Should be called from a SIGSEGV signal handler to find out whenever @ptr is
3540 * within memory allocated by this module.
3543 mono_aot_is_pagefault (void *ptr)
3545 if (!make_unreadable)
3549 * Not signal safe, but SIGSEGV's are synchronous, and
3550 * this is only turned on by a MONO_DEBUG option.
3552 return find_module_for_addr (ptr) != NULL;
3556 * mono_aot_handle_pagefault:
3558 * Handle a pagefault caused by an unreadable page by making it readable again.
3561 mono_aot_handle_pagefault (void *ptr)
3563 #ifndef PLATFORM_WIN32
3564 guint8* start = (guint8*)ROUND_DOWN (((gssize)ptr), mono_pagesize ());
3568 res = mono_mprotect (start, mono_pagesize (), MONO_MMAP_READ|MONO_MMAP_WRITE|MONO_MMAP_EXEC);
3569 g_assert (res == 0);
3580 mono_aot_init (void)
3585 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
3591 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
3597 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
3603 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
3609 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
3615 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
3621 mono_aot_get_plt_entry (guint8 *code)
3627 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
3633 mono_aot_patch_plt_entry (guint8 *code, gpointer *got, mgreg_t *regs, guint8 *addr)
3638 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
3644 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
3646 g_assert_not_reached ();
3652 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
3654 g_assert_not_reached ();
3659 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
3661 g_assert_not_reached ();
3666 mono_aot_get_trampoline (const char *name)
3668 g_assert_not_reached ();
3673 mono_aot_get_unbox_trampoline (MonoMethod *method)
3675 g_assert_not_reached ();
3680 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
3682 g_assert_not_reached ();
3687 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
3689 g_assert_not_reached ();
3694 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
3696 g_assert_not_reached ();
3701 mono_aot_register_jit_icall (const char *name, gpointer addr)