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/utils/mono-logger-internal.h>
55 #include <mono/utils/mono-mmap.h>
56 #include "mono/utils/mono-compiler.h"
57 #include <mono/utils/mono-counters.h>
65 #define SHARED_EXT ".dll"
66 #elif ((defined(__ppc__) || defined(__powerpc__) || defined(__ppc64__)) || defined(__MACH__)) && !defined(__linux__)
67 #define SHARED_EXT ".dylib"
69 #define SHARED_EXT ".so"
72 #define ALIGN_PTR_TO(ptr,align) (gpointer)((((gssize)(ptr)) + (align - 1)) & (~(align - 1)))
73 #define ROUND_DOWN(VALUE,SIZE) ((VALUE) & ~((SIZE) - 1))
75 typedef struct MonoAotModule {
77 /* Pointer to the Global Offset Table */
79 GHashTable *name_cache;
80 GHashTable *extra_methods;
81 /* Maps methods to their code */
82 GHashTable *method_to_code;
83 /* Maps pointers into the method info to the methods themselves */
84 GHashTable *method_ref_to_method;
85 MonoAssemblyName *image_names;
87 MonoAssembly *assembly;
88 MonoImage **image_table;
89 guint32 image_table_len;
100 /* This contains <offset, index> pairs sorted by offset */
101 /* This is needed because LLVM emitted methods can be in any order */
102 gint32 *sorted_code_offsets;
103 gint32 sorted_code_offsets_len;
104 guint32 *method_info_offsets;
105 guint32 *got_info_offsets;
106 guint32 *ex_info_offsets;
107 guint32 *class_info_offsets;
108 guint32 *methods_loaded;
109 guint16 *class_name_table;
110 guint32 *extra_method_table;
111 guint32 *extra_method_info_offsets;
114 /* Points to the GNU .eh_frame_hdr section, if it exists */
115 guint8 *eh_frame_hdr;
117 /* Points to the trampolines */
118 guint8 *trampolines [MONO_AOT_TRAMP_NUM];
119 /* The first unused trampoline of each kind */
120 guint32 trampoline_index [MONO_AOT_TRAMP_NUM];
122 MonoAotFileInfo info;
128 static GHashTable *aot_modules;
129 #define mono_aot_lock() EnterCriticalSection (&aot_mutex)
130 #define mono_aot_unlock() LeaveCriticalSection (&aot_mutex)
131 static CRITICAL_SECTION aot_mutex;
134 * Maps assembly names to the mono_aot_module_<NAME>_info symbols in the
135 * AOT modules registered by mono_aot_register_module ().
137 static GHashTable *static_aot_modules;
140 * Maps MonoJitInfo* to the aot module they belong to, this can be different
141 * from ji->method->klass->image's aot module for generic instances.
143 static GHashTable *ji_to_amodule;
146 * Whenever to AOT compile loaded assemblies on demand and store them in
147 * a cache under $HOME/.mono/aot-cache.
149 static gboolean use_aot_cache = FALSE;
152 * Whenever to spawn a new process to AOT a file or do it in-process. Only relevant if
153 * use_aot_cache is TRUE.
155 static gboolean spawn_compiler = TRUE;
158 static gint32 mono_last_aot_method = -1;
160 static gboolean make_unreadable = FALSE;
161 static guint32 name_table_accesses = 0;
162 static guint32 n_pagefaults = 0;
164 /* Used to speed-up find_aot_module () */
165 static gsize aot_code_low_addr = (gssize)-1;
166 static gsize aot_code_high_addr = 0;
168 static GHashTable *aot_jit_icall_hash;
171 init_plt (MonoAotModule *info);
173 /*****************************************************/
175 /*****************************************************/
180 * Load one of the images referenced by AMODULE. Returns NULL if the image is not
181 * found, and sets the loader error if SET_ERROR is TRUE.
184 load_image (MonoAotModule *amodule, int index, gboolean set_error)
186 MonoAssembly *assembly;
187 MonoImageOpenStatus status;
189 g_assert (index < amodule->image_table_len);
191 if (amodule->image_table [index])
192 return amodule->image_table [index];
193 if (amodule->out_of_date)
196 assembly = mono_assembly_load (&amodule->image_names [index], NULL, &status);
198 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);
199 amodule->out_of_date = TRUE;
202 char *full_name = mono_stringify_assembly_name (&amodule->image_names [index]);
203 mono_loader_set_error_assembly_load (full_name, FALSE);
209 if (strcmp (assembly->image->guid, amodule->image_guids [index])) {
210 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);
211 amodule->out_of_date = TRUE;
215 amodule->image_table [index] = assembly->image;
216 return assembly->image;
220 decode_value (guint8 *ptr, guint8 **rptr)
225 if ((b & 0x80) == 0){
228 } else if ((b & 0x40) == 0){
229 len = ((b & 0x3f) << 8 | ptr [1]);
231 } else if (b != 0xff) {
232 len = ((b & 0x1f) << 24) |
239 len = (ptr [1] << 24) | (ptr [2] << 16) | (ptr [3] << 8) | ptr [4];
245 //printf ("DECODE: %d.\n", len);
250 * mono_aot_get_method:
252 * Decode an offset table emitted by emit_offset_table (), returning the INDEXth
256 mono_aot_get_offset (guint32 *table, int index)
258 int i, group, ngroups, index_entry_size;
259 int start_offset, offset, noffsets, group_size;
260 guint8 *data_start, *p;
261 guint32 *index32 = NULL;
262 guint16 *index16 = NULL;
264 noffsets = table [0];
265 group_size = table [1];
267 index_entry_size = table [3];
268 group = index / group_size;
270 if (index_entry_size == 2) {
271 index16 = (guint16*)&table [4];
272 data_start = (guint8*)&index16 [ngroups];
273 p = data_start + index16 [group];
275 index32 = (guint32*)&table [4];
276 data_start = (guint8*)&index32 [ngroups];
277 p = data_start + index32 [group];
280 /* offset will contain the value of offsets [group * group_size] */
281 offset = start_offset = decode_value (p, &p);
282 for (i = group * group_size + 1; i <= index; ++i) {
283 offset += decode_value (p, &p);
286 //printf ("Offset lookup: %d -> %d, start=%d, p=%d\n", index, offset, start_offset, table [3 + group]);
292 decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf);
295 decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf);
297 static MonoGenericInst*
298 decode_generic_inst (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
301 MonoType **type_argv;
302 MonoGenericInst *inst;
305 type_argc = decode_value (p, &p);
306 type_argv = g_new0 (MonoType*, type_argc);
308 for (i = 0; i < type_argc; ++i) {
309 MonoClass *pclass = decode_klass_ref (module, p, &p);
314 type_argv [i] = &pclass->byval_arg;
317 inst = mono_metadata_get_generic_inst (type_argc, type_argv);
326 decode_generic_context (MonoAotModule *module, MonoGenericContext *ctx, guint8 *buf, guint8 **endbuf)
328 gboolean has_class_inst, has_method_inst;
331 has_class_inst = decode_value (p, &p);
332 if (has_class_inst) {
333 ctx->class_inst = decode_generic_inst (module, p, &p);
334 if (!ctx->class_inst)
337 has_method_inst = decode_value (p, &p);
338 if (has_method_inst) {
339 ctx->method_inst = decode_generic_inst (module, p, &p);
340 if (!ctx->method_inst)
349 decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
352 MonoClass *klass, *eklass;
356 token = decode_value (p, &p);
361 if (mono_metadata_token_table (token) == 0) {
362 image = load_image (module, decode_value (p, &p), TRUE);
365 klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF + token);
366 } else if (mono_metadata_token_table (token) == MONO_TABLE_TYPESPEC) {
367 if (token == MONO_TOKEN_TYPE_SPEC) {
368 MonoTypeEnum type = decode_value (p, &p);
370 if (type == MONO_TYPE_GENERICINST) {
372 MonoGenericContext ctx;
375 gclass = decode_klass_ref (module, p, &p);
378 g_assert (gclass->generic_container);
380 memset (&ctx, 0, sizeof (ctx));
381 ctx.class_inst = decode_generic_inst (module, p, &p);
384 type = mono_class_inflate_generic_type (&gclass->byval_arg, &ctx);
385 klass = mono_class_from_mono_type (type);
386 mono_metadata_free_type (type);
387 } else if ((type == MONO_TYPE_VAR) || (type == MONO_TYPE_MVAR)) {
389 MonoGenericContainer *container;
391 int num = decode_value (p, &p);
392 gboolean is_method = decode_value (p, &p);
395 MonoMethod *method_def;
396 g_assert (type == MONO_TYPE_MVAR);
397 method_def = decode_resolve_method_ref (module, p, &p);
401 container = mono_method_get_generic_container (method_def);
403 MonoClass *class_def;
404 g_assert (type == MONO_TYPE_VAR);
405 class_def = decode_klass_ref (module, p, &p);
409 container = class_def->generic_container;
412 g_assert (container);
414 // FIXME: Memory management
415 t = g_new0 (MonoType, 1);
417 t->data.generic_param = mono_generic_container_get_param (container, num);
419 // FIXME: Maybe use types directly to avoid
420 // the overhead of creating MonoClass-es
421 klass = mono_class_from_mono_type (t);
425 g_assert_not_reached ();
428 image = load_image (module, decode_value (p, &p), TRUE);
431 klass = mono_class_get (image, token);
433 } else if (token == MONO_TOKEN_TYPE_DEF) {
435 image = load_image (module, decode_value (p, &p), TRUE);
438 rank = decode_value (p, &p);
439 eklass = decode_klass_ref (module, p, &p);
440 klass = mono_array_class_get (eklass, rank);
442 g_assert_not_reached ();
450 static MonoClassField*
451 decode_field_info (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
453 MonoClass *klass = decode_klass_ref (module, buf, &buf);
460 token = MONO_TOKEN_FIELD_DEF + decode_value (p, &p);
464 return mono_class_get_field (klass, token);
467 /* Stores information returned by decode_method_ref () */
472 gboolean no_aot_trampoline;
476 * decode_method_ref_with_target:
478 * Decode a method reference, storing the image/token into a MethodRef structure.
479 * This avoids loading metadata for the method if the caller does not need it. If the method has
480 * no token, then it is loaded from metadata and ref->method is set to the method instance.
481 * If TARGET is non-NULL, abort decoding if it can be determined that the decoded method couldn't resolve to TARGET, and return FALSE.
484 decode_method_ref_with_target (MonoAotModule *module, MethodRef *ref, MonoMethod *target, guint8 *buf, guint8 **endbuf)
486 guint32 image_index, value;
487 MonoImage *image = NULL;
490 memset (ref, 0, sizeof (MethodRef));
492 value = decode_value (p, &p);
493 image_index = value >> 24;
495 if (image_index == MONO_AOT_METHODREF_NO_AOT_TRAMPOLINE) {
496 ref->no_aot_trampoline = TRUE;
497 value = decode_value (p, &p);
498 image_index = value >> 24;
501 if (image_index < MONO_AOT_METHODREF_MIN || image_index == MONO_AOT_METHODREF_METHODSPEC || image_index == MONO_AOT_METHODREF_GINST) {
502 if (target && target->wrapper_type)
506 if (image_index == MONO_AOT_METHODREF_WRAPPER) {
507 guint32 wrapper_type;
509 wrapper_type = decode_value (p, &p);
511 if (target && target->wrapper_type != wrapper_type)
515 image = mono_defaults.corlib;
517 switch (wrapper_type) {
518 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK: {
519 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
523 mono_class_init (m->klass);
524 ref->method = mono_marshal_get_remoting_invoke_with_check (m);
527 case MONO_WRAPPER_PROXY_ISINST: {
528 MonoClass *klass = decode_klass_ref (module, p, &p);
531 ref->method = mono_marshal_get_proxy_cancast (klass);
534 case MONO_WRAPPER_LDFLD:
535 case MONO_WRAPPER_LDFLDA:
536 case MONO_WRAPPER_STFLD:
537 case MONO_WRAPPER_ISINST: {
538 MonoClass *klass = decode_klass_ref (module, p, &p);
541 if (wrapper_type == MONO_WRAPPER_LDFLD)
542 ref->method = mono_marshal_get_ldfld_wrapper (&klass->byval_arg);
543 else if (wrapper_type == MONO_WRAPPER_LDFLDA)
544 ref->method = mono_marshal_get_ldflda_wrapper (&klass->byval_arg);
545 else if (wrapper_type == MONO_WRAPPER_STFLD)
546 ref->method = mono_marshal_get_stfld_wrapper (&klass->byval_arg);
547 else if (wrapper_type == MONO_WRAPPER_ISINST)
548 ref->method = mono_marshal_get_isinst (klass);
550 g_assert_not_reached ();
553 case MONO_WRAPPER_LDFLD_REMOTE:
554 ref->method = mono_marshal_get_ldfld_remote_wrapper (NULL);
556 case MONO_WRAPPER_STFLD_REMOTE:
557 ref->method = mono_marshal_get_stfld_remote_wrapper (NULL);
559 case MONO_WRAPPER_ALLOC: {
560 int atype = decode_value (p, &p);
562 ref->method = mono_gc_get_managed_allocator_by_type (atype);
565 case MONO_WRAPPER_WRITE_BARRIER:
566 ref->method = mono_gc_get_write_barrier ();
568 case MONO_WRAPPER_STELEMREF:
569 ref->method = mono_marshal_get_stelemref ();
571 case MONO_WRAPPER_SYNCHRONIZED: {
572 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
576 ref->method = mono_marshal_get_synchronized_wrapper (m);
579 case MONO_WRAPPER_UNKNOWN: {
580 MonoMethodDesc *desc;
581 MonoMethod *orig_method;
582 int subtype = decode_value (p, &p);
584 if (subtype == MONO_AOT_WRAPPER_MONO_ENTER)
585 desc = mono_method_desc_new ("Monitor:Enter", FALSE);
586 else if (subtype == MONO_AOT_WRAPPER_MONO_EXIT)
587 desc = mono_method_desc_new ("Monitor:Exit", FALSE);
589 g_assert_not_reached ();
590 orig_method = mono_method_desc_search_in_class (desc, mono_defaults.monitor_class);
591 g_assert (orig_method);
592 mono_method_desc_free (desc);
593 ref->method = mono_monitor_get_fast_path (orig_method);
596 case MONO_WRAPPER_RUNTIME_INVOKE: {
598 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
602 ref->method = mono_marshal_get_runtime_invoke (m, FALSE);
605 case MONO_WRAPPER_MANAGED_TO_MANAGED: {
606 int subtype = decode_value (p, &p);
608 if (subtype == MONO_AOT_WRAPPER_ELEMENT_ADDR) {
609 int rank = decode_value (p, &p);
610 int elem_size = decode_value (p, &p);
612 ref->method = mono_marshal_get_array_address (rank, elem_size);
614 g_assert_not_reached ();
619 g_assert_not_reached ();
621 } else if (image_index == MONO_AOT_METHODREF_WRAPPER_NAME) {
624 /* Can't decode these */
625 g_assert_not_reached ();
626 } else if (image_index == MONO_AOT_METHODREF_METHODSPEC) {
627 image_index = decode_value (p, &p);
628 ref->token = decode_value (p, &p);
630 image = load_image (module, image_index, TRUE);
633 } else if (image_index == MONO_AOT_METHODREF_GINST) {
635 MonoGenericContext ctx;
638 * These methods do not have a token which resolves them, so we
639 * resolve them immediately.
641 klass = decode_klass_ref (module, p, &p);
645 if (target && target->klass != klass)
648 image_index = decode_value (p, &p);
649 ref->token = decode_value (p, &p);
651 image = load_image (module, image_index, TRUE);
655 ref->method = mono_get_method_full (image, ref->token, NULL, NULL);
659 memset (&ctx, 0, sizeof (ctx));
661 if (FALSE && klass->generic_class) {
662 ctx.class_inst = klass->generic_class->context.class_inst;
663 ctx.method_inst = NULL;
665 ref->method = mono_class_inflate_generic_method_full (ref->method, klass, &ctx);
668 memset (&ctx, 0, sizeof (ctx));
670 if (!decode_generic_context (module, &ctx, p, &p))
673 ref->method = mono_class_inflate_generic_method_full (ref->method, klass, &ctx);
674 } else if (image_index == MONO_AOT_METHODREF_ARRAY) {
678 klass = decode_klass_ref (module, p, &p);
681 method_type = decode_value (p, &p);
682 switch (method_type) {
684 ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank);
687 ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank * 2);
690 ref->method = mono_class_get_method_from_name (klass, "Get", -1);
693 ref->method = mono_class_get_method_from_name (klass, "Address", -1);
696 ref->method = mono_class_get_method_from_name (klass, "Set", -1);
699 g_assert_not_reached ();
702 g_assert (image_index < MONO_AOT_METHODREF_MIN);
703 ref->token = MONO_TOKEN_METHOD_DEF | (value & 0xffffff);
705 image = load_image (module, image_index, TRUE);
718 decode_method_ref (MonoAotModule *module, MethodRef *ref, guint8 *buf, guint8 **endbuf)
720 return decode_method_ref_with_target (module, ref, NULL, buf, endbuf);
724 * decode_resolve_method_ref_with_target:
726 * Similar to decode_method_ref, but resolve and return the method itself.
729 decode_resolve_method_ref_with_target (MonoAotModule *module, MonoMethod *target, guint8 *buf, guint8 **endbuf)
734 res = decode_method_ref_with_target (module, &ref, target, buf, endbuf);
741 return mono_get_method (ref.image, ref.token, NULL);
745 decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
747 return decode_resolve_method_ref_with_target (module, NULL, buf, endbuf);
751 create_cache_structure (void)
757 home = g_get_home_dir ();
761 tmp = g_build_filename (home, ".mono", NULL);
762 if (!g_file_test (tmp, G_FILE_TEST_IS_DIR)) {
763 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT creating directory %s", tmp);
767 err = mkdir (tmp, 0777);
770 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed: %s", g_strerror (errno));
776 tmp = g_build_filename (home, ".mono", "aot-cache", NULL);
777 if (!g_file_test (tmp, G_FILE_TEST_IS_DIR)) {
778 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT creating directory %s", tmp);
782 err = mkdir (tmp, 0777);
785 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed: %s", g_strerror (errno));
794 * load_aot_module_from_cache:
796 * Experimental code to AOT compile loaded assemblies on demand.
799 * - Add environment variable MONO_AOT_CACHE_OPTIONS
800 * - Add options for controlling the cache size
801 * - Handle full cache by deleting old assemblies lru style
802 * - Add options for excluding assemblies during development
803 * - Maybe add a threshold after an assembly is AOT compiled
804 * - invoking a new mono process is a security risk
805 * - recompile the AOT module if one of its dependencies changes
808 load_aot_module_from_cache (MonoAssembly *assembly, char **aot_name)
810 char *fname, *cmd, *tmp2, *aot_options;
819 if (assembly->image->dynamic)
822 create_cache_structure ();
824 home = g_get_home_dir ();
826 tmp2 = g_strdup_printf ("%s-%s%s", assembly->image->assembly_name, assembly->image->guid, SHARED_EXT);
827 fname = g_build_filename (home, ".mono", "aot-cache", tmp2, NULL);
831 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT trying to load from cache: '%s'.", fname);
832 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
835 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT not found.");
837 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT precompiling assembly '%s'... ", assembly->image->name);
839 aot_options = g_strdup_printf ("outfile=%s", fname);
841 if (spawn_compiler) {
842 /* FIXME: security */
843 /* FIXME: Has to pass the assembly loading path to the child process */
844 cmd = g_strdup_printf ("mono -O=all --aot=%s %s", aot_options, assembly->image->name);
846 res = g_spawn_command_line_sync (cmd, &out, &err, &exit_status, NULL);
848 #if !defined(HOST_WIN32) && !defined(__ppc__) && !defined(__ppc64__) && !defined(__powerpc__)
850 if (!WIFEXITED (exit_status) && (WEXITSTATUS (exit_status) == 0))
851 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT failed: %s.", err);
853 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT succeeded.");
860 res = mono_compile_assembly (assembly, mono_parse_default_optimizations (NULL), aot_options);
862 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT failed.");
864 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT succeeded.");
868 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
870 g_free (aot_options);
877 find_symbol (MonoDl *module, gpointer *globals, const char *name, gpointer *value)
881 guint16 *table, *entry;
885 /* The first entry points to the hash */
889 table_size = table [0];
892 hash = mono_metadata_str_hash (name) % table_size;
894 entry = &table [hash * 2];
896 /* Search the hash for the index into the globals table */
898 while (entry [0] != 0) {
899 guint32 index = entry [0] - 1;
900 guint32 next = entry [1];
902 //printf ("X: %s %s\n", (char*)globals [index * 2], name);
904 if (!strcmp (globals [index * 2], name)) {
905 global_index = index;
910 entry = &table [next * 2];
916 if (global_index != -1)
917 *value = globals [global_index * 2 + 1];
921 char *err = mono_dl_symbol (module, name, value);
928 #if defined(HAVE_DL_ITERATE_PHDR) && defined(PT_GNU_EH_FRAME)
930 dl_callback (struct dl_phdr_info *info, size_t size, void *data)
933 MonoAotModule *amodule = data;
935 if (!strcmp (amodule->aot_name, info->dlpi_name)) {
936 for (j = 0; j < info->dlpi_phnum; j++) {
937 if (info->dlpi_phdr [j].p_type == PT_GNU_EH_FRAME)
938 amodule->eh_frame_hdr = (guint8*)(info->dlpi_addr + info->dlpi_phdr [j].p_vaddr);
948 load_aot_module (MonoAssembly *assembly, gpointer user_data)
951 MonoAotModule *amodule;
953 gboolean usable = TRUE;
954 char *saved_guid = NULL;
955 char *aot_version = NULL;
956 char *runtime_version, *build_info;
957 char *opt_flags = NULL;
959 gboolean full_aot = FALSE;
960 MonoAotFileInfo *file_info = NULL;
965 if (mono_compile_aot)
968 if (assembly->image->aot_module)
970 * Already loaded. This can happen because the assembly loading code might invoke
971 * the assembly load hooks multiple times for the same assembly.
975 if (assembly->image->dynamic)
978 if (mono_security_get_mode () == MONO_SECURITY_MODE_CAS)
982 if (static_aot_modules)
983 globals = g_hash_table_lookup (static_aot_modules, assembly->aname.name);
989 /* Statically linked AOT module */
991 aot_name = g_strdup_printf ("%s", assembly->aname.name);
992 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "Found statically linked AOT module '%s'.\n", aot_name);
995 sofile = load_aot_module_from_cache (assembly, &aot_name);
998 aot_name = g_strdup_printf ("%s%s", assembly->image->name, SHARED_EXT);
1000 sofile = mono_dl_open (aot_name, MONO_DL_LAZY, &err);
1003 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed to load AOT module %s: %s\n", aot_name, err);
1009 if (!sofile && !globals) {
1010 if (mono_aot_only) {
1011 fprintf (stderr, "Failed to load AOT module '%s' in aot-only mode.\n", aot_name);
1018 find_symbol (sofile, globals, "mono_assembly_guid", (gpointer *) &saved_guid);
1019 find_symbol (sofile, globals, "mono_aot_version", (gpointer *) &aot_version);
1020 find_symbol (sofile, globals, "mono_aot_opt_flags", (gpointer *)&opt_flags);
1021 find_symbol (sofile, globals, "mono_runtime_version", (gpointer *)&runtime_version);
1022 find_symbol (sofile, globals, "mono_aot_got_addr", (gpointer *)&got_addr);
1024 if (!aot_version || strcmp (aot_version, MONO_AOT_FILE_VERSION)) {
1025 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);
1029 if (!saved_guid || strcmp (assembly->image->guid, saved_guid)) {
1030 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is out of date.\n", aot_name);
1035 build_info = mono_get_runtime_build_info ();
1036 if (!runtime_version || ((strlen (runtime_version) > 0 && strcmp (runtime_version, build_info)))) {
1037 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);
1040 g_free (build_info);
1042 find_symbol (sofile, globals, "mono_aot_file_info", (gpointer*)&file_info);
1043 g_assert (file_info);
1045 full_aot = ((MonoAotFileInfo*)file_info)->flags & MONO_AOT_FILE_FLAG_FULL_AOT;
1047 if (mono_aot_only && !full_aot) {
1048 fprintf (stderr, "Can't use AOT image '%s' in aot-only mode because it is not compiled with --aot=full.\n", aot_name);
1051 if (!mono_aot_only && full_aot) {
1052 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is compiled with --aot=full.\n", aot_name);
1056 /* This is no longer needed, LLVM and non-LLVM runtimes should be compatible.
1057 if ((((MonoAotFileInfo*)file_info)->flags & MONO_AOT_FILE_FLAG_WITH_LLVM) && !mono_use_llvm) {
1058 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is compiled with LLVM.\n", aot_name);
1063 find_symbol (sofile, globals, "blob", (gpointer*)&blob);
1065 if (usable && ((MonoAotFileInfo*)file_info)->gc_name_index != -1) {
1066 char *gc_name = (char*)&blob [((MonoAotFileInfo*)file_info)->gc_name_index];
1067 const char *current_gc_name = mono_gc_get_gc_name ();
1069 if (strcmp (current_gc_name, gc_name) != 0) {
1070 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);
1076 if (mono_aot_only) {
1077 fprintf (stderr, "Failed to load AOT module '%s' while running in aot-only mode.\n", aot_name);
1080 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is unusable.\n", aot_name);
1084 mono_dl_close (sofile);
1085 assembly->image->aot_module = NULL;
1089 amodule = g_new0 (MonoAotModule, 1);
1090 amodule->aot_name = aot_name;
1091 amodule->assembly = assembly;
1093 memcpy (&amodule->info, file_info, sizeof (*file_info));
1095 amodule->got = *got_addr;
1096 amodule->got [0] = assembly->image;
1097 amodule->globals = globals;
1098 amodule->sofile = sofile;
1099 amodule->method_to_code = g_hash_table_new (mono_aligned_addr_hash, NULL);
1100 amodule->blob = blob;
1102 /* Read image table */
1104 guint32 table_len, i;
1107 find_symbol (sofile, globals, "mono_image_table", (gpointer *)&table);
1110 table_len = *(guint32*)table;
1111 table += sizeof (guint32);
1112 amodule->image_table = g_new0 (MonoImage*, table_len);
1113 amodule->image_names = g_new0 (MonoAssemblyName, table_len);
1114 amodule->image_guids = g_new0 (char*, table_len);
1115 amodule->image_table_len = table_len;
1116 for (i = 0; i < table_len; ++i) {
1117 MonoAssemblyName *aname = &(amodule->image_names [i]);
1119 aname->name = g_strdup (table);
1120 table += strlen (table) + 1;
1121 amodule->image_guids [i] = g_strdup (table);
1122 table += strlen (table) + 1;
1124 aname->culture = g_strdup (table);
1125 table += strlen (table) + 1;
1126 memcpy (aname->public_key_token, table, strlen (table) + 1);
1127 table += strlen (table) + 1;
1129 table = ALIGN_PTR_TO (table, 8);
1130 aname->flags = *(guint32*)table;
1132 aname->major = *(guint32*)table;
1134 aname->minor = *(guint32*)table;
1136 aname->build = *(guint32*)table;
1138 aname->revision = *(guint32*)table;
1143 /* Read method and method_info tables */
1144 find_symbol (sofile, globals, "code_offsets", (gpointer*)&amodule->code_offsets);
1145 find_symbol (sofile, globals, "methods", (gpointer*)&amodule->code);
1146 find_symbol (sofile, globals, "methods_end", (gpointer*)&amodule->code_end);
1147 find_symbol (sofile, globals, "method_info_offsets", (gpointer*)&amodule->method_info_offsets);
1148 find_symbol (sofile, globals, "ex_info_offsets", (gpointer*)&amodule->ex_info_offsets);
1149 find_symbol (sofile, globals, "class_info_offsets", (gpointer*)&amodule->class_info_offsets);
1150 find_symbol (sofile, globals, "class_name_table", (gpointer *)&amodule->class_name_table);
1151 find_symbol (sofile, globals, "extra_method_table", (gpointer *)&amodule->extra_method_table);
1152 find_symbol (sofile, globals, "extra_method_info_offsets", (gpointer *)&amodule->extra_method_info_offsets);
1153 find_symbol (sofile, globals, "got_info_offsets", (gpointer*)&amodule->got_info_offsets);
1154 find_symbol (sofile, globals, "specific_trampolines", (gpointer*)&(amodule->trampolines [MONO_AOT_TRAMP_SPECIFIC]));
1155 find_symbol (sofile, globals, "static_rgctx_trampolines", (gpointer*)&(amodule->trampolines [MONO_AOT_TRAMP_STATIC_RGCTX]));
1156 find_symbol (sofile, globals, "imt_thunks", (gpointer*)&(amodule->trampolines [MONO_AOT_TRAMP_IMT_THUNK]));
1157 find_symbol (sofile, globals, "unwind_info", (gpointer)&amodule->unwind_info);
1158 find_symbol (sofile, globals, "mem_end", (gpointer*)&amodule->mem_end);
1160 amodule->mem_begin = amodule->code;
1162 find_symbol (sofile, globals, "plt", (gpointer*)&amodule->plt);
1163 find_symbol (sofile, globals, "plt_end", (gpointer*)&amodule->plt_end);
1165 if (make_unreadable) {
1166 #ifndef TARGET_WIN32
1168 guint8 *page_start, *page_end;
1171 addr = amodule->mem_begin;
1172 len = amodule->mem_end - amodule->mem_begin;
1174 /* Round down in both directions to avoid modifying data which is not ours */
1175 page_start = (guint8 *) (((gssize) (addr)) & ~ (mono_pagesize () - 1)) + mono_pagesize ();
1176 page_end = (guint8 *) (((gssize) (addr + len)) & ~ (mono_pagesize () - 1));
1177 if (page_end > page_start) {
1178 err = mono_mprotect (page_start, (page_end - page_start), MONO_MMAP_NONE);
1179 g_assert (err == 0);
1186 aot_code_low_addr = MIN (aot_code_low_addr, (gsize)amodule->code);
1187 aot_code_high_addr = MAX (aot_code_high_addr, (gsize)amodule->code_end);
1189 g_hash_table_insert (aot_modules, assembly, amodule);
1192 mono_jit_info_add_aot_module (assembly->image, amodule->code, amodule->code_end);
1194 assembly->image->aot_module = amodule;
1196 #if defined(HAVE_DL_ITERATE_PHDR) && defined(PT_GNU_EH_FRAME)
1197 /* Lookup the address of the .eh_frame_hdr () section if available */
1198 dl_iterate_phdr (dl_callback, amodule);
1201 if (mono_aot_only) {
1202 if (mono_defaults.corlib) {
1203 /* The second got slot contains the mscorlib got addr */
1204 MonoAotModule *mscorlib_amodule = mono_defaults.corlib->aot_module;
1206 amodule->got [1] = mscorlib_amodule->got;
1208 amodule->got [1] = amodule->got;
1216 memset (&ji, 0, sizeof (ji));
1217 ji.type = MONO_PATCH_INFO_GC_CARD_TABLE_ADDR;
1219 amodule->got [2] = mono_resolve_patch_target (NULL, mono_get_root_domain (), NULL, &ji, FALSE);
1224 * Since we store methoddef and classdef tokens when referring to methods/classes in
1225 * referenced assemblies, we depend on the exact versions of the referenced assemblies.
1226 * MS calls this 'hard binding'. This means we have to load all referenced assemblies
1227 * non-lazily, since we can't handle out-of-date errors later.
1228 * The cached class info also depends on the exact assemblies.
1230 for (i = 0; i < amodule->image_table_len; ++i)
1231 load_image (amodule, i, FALSE);
1233 if (amodule->out_of_date) {
1234 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);
1235 if (mono_aot_only) {
1236 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);
1241 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT loaded AOT Module for %s.\n", assembly->image->name);
1245 * mono_aot_register_globals:
1247 * This is called by the ctor function in AOT images compiled with the
1248 * 'no-dlsym' option.
1251 mono_aot_register_globals (gpointer *globals)
1253 g_assert_not_reached ();
1257 * mono_aot_register_module:
1259 * This should be called by embedding code to register AOT modules statically linked
1260 * into the executable. AOT_INFO should be the value of the
1261 * 'mono_aot_module_<ASSEMBLY_NAME>_info' global symbol from the AOT module.
1264 mono_aot_register_module (gpointer *aot_info)
1272 /* Determine the assembly name */
1273 find_symbol (NULL, globals, "mono_aot_assembly_name", (gpointer*)&aname);
1276 /* This could be called before startup */
1280 if (!static_aot_modules)
1281 static_aot_modules = g_hash_table_new (g_str_hash, g_str_equal);
1283 g_hash_table_insert (static_aot_modules, aname, globals);
1290 mono_aot_init (void)
1292 InitializeCriticalSection (&aot_mutex);
1293 aot_modules = g_hash_table_new (NULL, NULL);
1295 mono_install_assembly_load_hook (load_aot_module, NULL);
1297 if (g_getenv ("MONO_LASTAOT"))
1298 mono_last_aot_method = atoi (g_getenv ("MONO_LASTAOT"));
1299 if (g_getenv ("MONO_AOT_CACHE"))
1300 use_aot_cache = TRUE;
1304 mono_aot_cleanup (void)
1306 if (aot_jit_icall_hash)
1307 g_hash_table_destroy (aot_jit_icall_hash);
1309 g_hash_table_destroy (aot_modules);
1313 decode_cached_class_info (MonoAotModule *module, MonoCachedClassInfo *info, guint8 *buf, guint8 **endbuf)
1319 info->vtable_size = decode_value (buf, &buf);
1320 if (info->vtable_size == -1)
1323 flags = decode_value (buf, &buf);
1324 info->ghcimpl = (flags >> 0) & 0x1;
1325 info->has_finalize = (flags >> 1) & 0x1;
1326 info->has_cctor = (flags >> 2) & 0x1;
1327 info->has_nested_classes = (flags >> 3) & 0x1;
1328 info->blittable = (flags >> 4) & 0x1;
1329 info->has_references = (flags >> 5) & 0x1;
1330 info->has_static_refs = (flags >> 6) & 0x1;
1331 info->no_special_static_fields = (flags >> 7) & 0x1;
1332 info->is_generic_container = (flags >> 8) & 0x1;
1334 if (info->has_cctor) {
1335 res = decode_method_ref (module, &ref, buf, &buf);
1338 info->cctor_token = ref.token;
1340 if (info->has_finalize) {
1341 res = decode_method_ref (module, &ref, buf, &buf);
1344 info->finalize_image = ref.image;
1345 info->finalize_token = ref.token;
1348 info->instance_size = decode_value (buf, &buf);
1349 info->class_size = decode_value (buf, &buf);
1350 info->packing_size = decode_value (buf, &buf);
1351 info->min_align = decode_value (buf, &buf);
1359 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
1362 MonoClass *klass = vtable->klass;
1363 MonoAotModule *amodule = klass->image->aot_module;
1365 MonoCachedClassInfo class_info;
1370 if (MONO_CLASS_IS_INTERFACE (klass) || klass->rank || !amodule)
1373 info = &amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
1376 err = decode_cached_class_info (amodule, &class_info, p, &p);
1380 for (i = 0; i < slot; ++i)
1381 decode_method_ref (amodule, &ref, p, &p);
1383 res = decode_method_ref (amodule, &ref, p, &p);
1386 if (ref.no_aot_trampoline)
1389 if (mono_metadata_token_index (ref.token) == 0)
1392 return mono_aot_get_method_from_token (domain, ref.image, ref.token);
1396 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
1398 MonoAotModule *amodule = klass->image->aot_module;
1402 if (klass->rank || !amodule)
1405 p = (guint8*)&amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
1407 err = decode_cached_class_info (amodule, res, p, &p);
1415 * mono_aot_get_class_from_name:
1417 * Obtains a MonoClass with a given namespace and a given name which is located in IMAGE,
1418 * using a cache stored in the AOT file.
1419 * Stores the resulting class in *KLASS if found, stores NULL otherwise.
1421 * Returns: TRUE if the klass was found/not found in the cache, FALSE if no aot file was
1425 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
1427 MonoAotModule *amodule = image->aot_module;
1428 guint16 *table, *entry;
1431 char full_name_buf [1024];
1433 const char *name2, *name_space2;
1435 guint32 cols [MONO_TYPEDEF_SIZE];
1436 GHashTable *nspace_table;
1438 if (!amodule || !amodule->class_name_table)
1445 /* First look in the cache */
1446 if (!amodule->name_cache)
1447 amodule->name_cache = g_hash_table_new (g_str_hash, g_str_equal);
1448 nspace_table = g_hash_table_lookup (amodule->name_cache, name_space);
1450 *klass = g_hash_table_lookup (nspace_table, name);
1457 table_size = amodule->class_name_table [0];
1458 table = amodule->class_name_table + 1;
1460 if (name_space [0] == '\0')
1461 full_name = g_strdup_printf ("%s", name);
1463 if (strlen (name_space) + strlen (name) < 1000) {
1464 sprintf (full_name_buf, "%s.%s", name_space, name);
1465 full_name = full_name_buf;
1467 full_name = g_strdup_printf ("%s.%s", name_space, name);
1470 hash = mono_metadata_str_hash (full_name) % table_size;
1471 if (full_name != full_name_buf)
1474 entry = &table [hash * 2];
1476 if (entry [0] != 0) {
1477 t = &image->tables [MONO_TABLE_TYPEDEF];
1480 guint32 index = entry [0];
1481 guint32 next = entry [1];
1482 guint32 token = mono_metadata_make_token (MONO_TABLE_TYPEDEF, index);
1484 name_table_accesses ++;
1486 mono_metadata_decode_row (t, index - 1, cols, MONO_TYPEDEF_SIZE);
1488 name2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
1489 name_space2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
1491 if (!strcmp (name, name2) && !strcmp (name_space, name_space2)) {
1493 *klass = mono_class_get (image, token);
1498 nspace_table = g_hash_table_lookup (amodule->name_cache, name_space);
1499 if (!nspace_table) {
1500 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
1501 g_hash_table_insert (amodule->name_cache, (char*)name_space2, nspace_table);
1503 g_hash_table_insert (nspace_table, (char*)name2, *klass);
1510 entry = &table [next * 2];
1522 #define DW_EH_PE_omit 0xff
1523 #define DW_EH_PE_uleb128 0x01
1524 #define DW_EH_PE_udata2 0x02
1525 #define DW_EH_PE_udata4 0x03
1526 #define DW_EH_PE_udata8 0x04
1527 #define DW_EH_PE_sleb128 0x09
1528 #define DW_EH_PE_sdata2 0x0A
1529 #define DW_EH_PE_sdata4 0x0B
1530 #define DW_EH_PE_sdata8 0x0C
1532 #define DW_EH_PE_absptr 0x00
1533 #define DW_EH_PE_pcrel 0x10
1534 #define DW_EH_PE_datarel 0x30
1535 #define DW_EH_PE_omit 0xff
1540 guint8 eh_frame_ptr_enc;
1541 guint8 fde_count_enc;
1549 * Decode the exception handling information in the .eh_frame section of the AOT
1550 * file belong to CODE, and construct a MonoJitInfo structure from it.
1551 * LOCKING: Acquires the domain lock.
1553 static G_GNUC_UNUSED MonoJitInfo*
1554 decode_eh_frame (MonoAotModule *amodule, MonoDomain *domain,
1555 MonoMethod *method, guint8 *code,
1556 MonoJitExceptionInfo *clauses, int num_clauses,
1557 int extra_size, GSList **nesting,
1558 int *this_reg, int *this_offset)
1562 guint8 *eh_frame, *unwind_info;
1563 guint32 eh_frame_ptr;
1566 int i, j, pos, left, right, offset, offset1, offset2;
1567 guint32 unw_len, code_len;
1568 MonoJitExceptionInfo *ei;
1569 guint32 ei_len, nested_len, nindex;
1570 gpointer *type_info;
1573 g_assert (amodule->eh_frame_hdr);
1575 // http://refspecs.freestandards.org/LSB_1.3.0/gLSB/gLSB/ehframehdr.html
1576 hdr = (eh_frame_hdr*)amodule->eh_frame_hdr;
1577 g_assert (hdr->version == 1);
1578 g_assert (hdr->eh_frame_ptr_enc == (DW_EH_PE_pcrel | DW_EH_PE_sdata4));
1579 g_assert (hdr->fde_count_enc == DW_EH_PE_udata4);
1580 g_assert (hdr->table_enc == (DW_EH_PE_datarel | DW_EH_PE_sdata4));
1583 eh_frame_ptr = *(guint32*)p;
1585 fde_count = *(guint32*)p;
1589 /* Binary search in the table to find the entry for code */
1590 offset = code - amodule->eh_frame_hdr;
1595 pos = (left + right) / 2;
1597 offset1 = table [(pos * 2)];
1598 if (pos + 1 == fde_count)
1600 offset2 = amodule->code_end - amodule->code;
1602 offset2 = table [(pos + 1) * 2];
1604 if (offset < offset1)
1606 else if (offset >= offset2)
1612 g_assert (code >= amodule->eh_frame_hdr + table [(pos * 2)]);
1613 if (pos + 1 < fde_count)
1614 g_assert (code < amodule->eh_frame_hdr + table [(pos * 2) + 2]);
1616 eh_frame = amodule->eh_frame_hdr + table [(pos * 2) + 1];
1618 unwind_info = mono_unwind_decode_fde (eh_frame, &unw_len, &code_len, &ei, &ei_len, &type_info, this_reg, this_offset);
1620 /* Count number of nested clauses */
1622 for (i = 0; i < ei_len; ++i) {
1623 gint32 cindex1 = *(gint32*)type_info [i];
1626 for (l = nesting [cindex1]; l; l = l->next) {
1627 gint32 nesting_cindex = GPOINTER_TO_INT (l->data);
1629 for (j = 0; j < ei_len; ++j) {
1630 gint32 cindex2 = *(gint32*)type_info [j];
1632 if (cindex2 == nesting_cindex)
1639 * LLVM might represent one IL region with multiple regions, so have to
1640 * allocate a new JI.
1643 mono_domain_alloc0 (domain, MONO_SIZEOF_JIT_INFO + (sizeof (MonoJitExceptionInfo) * (ei_len + nested_len)) + extra_size);
1645 jinfo->code_size = code_len;
1646 jinfo->used_regs = mono_cache_unwind_info (unwind_info, unw_len);
1647 jinfo->method = method;
1648 jinfo->code_start = code;
1649 jinfo->domain_neutral = 0;
1650 /* This signals that used_regs points to a normal cached unwind info */
1651 jinfo->from_aot = 0;
1652 jinfo->num_clauses = ei_len + nested_len;
1654 for (i = 0; i < ei_len; ++i) {
1656 * orig_jinfo contains the original IL exception info saved by the AOT
1657 * compiler, we have to combine that with the information produced by LLVM
1659 /* The type_info entries contain IL clause indexes */
1660 int clause_index = *(gint32*)type_info [i];
1661 MonoJitExceptionInfo *jei = &jinfo->clauses [i];
1662 MonoJitExceptionInfo *orig_jei = &clauses [clause_index];
1664 g_assert (clause_index < num_clauses);
1665 jei->flags = orig_jei->flags;
1666 jei->data.catch_class = orig_jei->data.catch_class;
1668 jei->try_start = ei [i].try_start;
1669 jei->try_end = ei [i].try_end;
1670 jei->handler_start = ei [i].handler_start;
1673 /* See exception_cb () in mini-llvm.c as to why this is needed */
1675 for (i = 0; i < ei_len; ++i) {
1676 gint32 cindex1 = *(gint32*)type_info [i];
1679 for (l = nesting [cindex1]; l; l = l->next) {
1680 gint32 nesting_cindex = GPOINTER_TO_INT (l->data);
1682 for (j = 0; j < ei_len; ++j) {
1683 gint32 cindex2 = *(gint32*)type_info [j];
1685 if (cindex2 == nesting_cindex) {
1687 * The try interval comes from the nested clause, everything else from the
1690 memcpy (&jinfo->clauses [nindex], &jinfo->clauses [j], sizeof (MonoJitExceptionInfo));
1691 jinfo->clauses [nindex].try_start = jinfo->clauses [i].try_start;
1692 jinfo->clauses [nindex].try_end = jinfo->clauses [i].try_end;
1698 g_assert (nindex == ei_len + nested_len);
1704 * LOCKING: Acquires the domain lock.
1707 decode_exception_debug_info (MonoAotModule *amodule, MonoDomain *domain,
1708 MonoMethod *method, guint8* ex_info, guint8 *addr,
1709 guint8 *code, guint32 code_len)
1711 int i, buf_len, num_clauses;
1713 guint used_int_regs, flags;
1714 gboolean has_generic_jit_info, has_dwarf_unwind_info, has_clauses, has_seq_points, has_try_block_holes;
1717 int generic_info_size, try_holes_info_size, num_holes, this_reg, this_offset;
1719 /* Load the method info from the AOT file */
1722 flags = decode_value (p, &p);
1723 has_generic_jit_info = (flags & 1) != 0;
1724 has_dwarf_unwind_info = (flags & 2) != 0;
1725 has_clauses = (flags & 4) != 0;
1726 has_seq_points = (flags & 8) != 0;
1727 from_llvm = (flags & 16) != 0;
1728 has_try_block_holes = (flags & 32) != 0;
1730 if (has_dwarf_unwind_info) {
1733 offset = decode_value (p, &p);
1734 g_assert (offset < (1 << 30));
1735 used_int_regs = offset;
1737 used_int_regs = decode_value (p, &p);
1739 if (has_generic_jit_info)
1740 generic_info_size = sizeof (MonoGenericJitInfo);
1742 generic_info_size = 0;
1744 if (has_try_block_holes) {
1745 num_holes = decode_value (p, &p);
1746 try_holes_info_size = sizeof (MonoTryBlockHoleTableJitInfo) + num_holes * sizeof (MonoTryBlockHoleJitInfo);
1748 num_holes = try_holes_info_size = 0;
1750 /* Exception table */
1752 num_clauses = decode_value (p, &p);
1757 MonoJitExceptionInfo *clauses;
1761 * Part of the info is encoded by the AOT compiler, the rest is in the .eh_frame
1764 clauses = g_new0 (MonoJitExceptionInfo, num_clauses);
1765 nesting = g_new0 (GSList*, num_clauses);
1767 for (i = 0; i < num_clauses; ++i) {
1768 MonoJitExceptionInfo *ei = &clauses [i];
1770 ei->flags = decode_value (p, &p);
1772 if (decode_value (p, &p))
1773 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
1775 /* Read the list of nesting clauses */
1777 int nesting_index = decode_value (p, &p);
1778 if (nesting_index == -1)
1780 nesting [i] = g_slist_prepend (nesting [i], GINT_TO_POINTER (nesting_index));
1784 jinfo = decode_eh_frame (amodule, domain, method, code, clauses, num_clauses, generic_info_size + try_holes_info_size, nesting, &this_reg, &this_offset);
1785 jinfo->from_llvm = 1;
1788 for (i = 0; i < num_clauses; ++i)
1789 g_slist_free (nesting [i]);
1793 mono_domain_alloc0 (domain, MONO_SIZEOF_JIT_INFO + (sizeof (MonoJitExceptionInfo) * num_clauses) + generic_info_size + try_holes_info_size);
1794 jinfo->num_clauses = num_clauses;
1796 for (i = 0; i < jinfo->num_clauses; ++i) {
1797 MonoJitExceptionInfo *ei = &jinfo->clauses [i];
1799 ei->flags = decode_value (p, &p);
1801 ei->exvar_offset = decode_value (p, &p);
1803 if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER || ei->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
1804 ei->data.filter = code + decode_value (p, &p);
1806 if (decode_value (p, &p))
1807 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
1810 ei->try_start = code + decode_value (p, &p);
1811 ei->try_end = code + decode_value (p, &p);
1812 ei->handler_start = code + decode_value (p, &p);
1815 jinfo->code_size = code_len;
1816 jinfo->used_regs = used_int_regs;
1817 jinfo->method = method;
1818 jinfo->code_start = code;
1819 jinfo->domain_neutral = 0;
1820 jinfo->from_aot = 1;
1823 if (has_generic_jit_info) {
1824 MonoGenericJitInfo *gi;
1826 jinfo->has_generic_jit_info = 1;
1828 gi = mono_jit_info_get_generic_jit_info (jinfo);
1832 gi->has_this = this_reg != -1;
1833 gi->this_reg = this_reg;
1834 gi->this_offset = this_offset;
1836 gi->has_this = decode_value (p, &p);
1837 gi->this_reg = decode_value (p, &p);
1838 gi->this_offset = decode_value (p, &p);
1841 /* This currently contains no data */
1842 gi->generic_sharing_context = g_new0 (MonoGenericSharingContext, 1);
1844 jinfo->method = decode_resolve_method_ref (amodule, p, &p);
1847 if (has_try_block_holes) {
1848 MonoTryBlockHoleTableJitInfo *table;
1850 jinfo->has_try_block_holes = 1;
1852 table = mono_jit_info_get_try_block_hole_table_info (jinfo);
1855 table->num_holes = (guint16)num_holes;
1856 for (i = 0; i < num_holes; ++i) {
1857 MonoTryBlockHoleJitInfo *hole = &table->holes [i];
1858 hole->clause = decode_value (p, &p);
1859 hole->length = decode_value (p, &p);
1860 hole->offset = decode_value (p, &p);
1864 if (has_seq_points) {
1865 MonoSeqPointInfo *seq_points;
1866 int il_offset, native_offset, last_il_offset, last_native_offset, j;
1868 int len = decode_value (p, &p);
1870 seq_points = g_malloc0 (sizeof (MonoSeqPointInfo) + (len - MONO_ZERO_LEN_ARRAY) * sizeof (SeqPoint));
1871 seq_points->len = len;
1872 last_il_offset = last_native_offset = 0;
1873 for (i = 0; i < len; ++i) {
1874 SeqPoint *sp = &seq_points->seq_points [i];
1875 il_offset = last_il_offset + decode_value (p, &p);
1876 native_offset = last_native_offset + decode_value (p, &p);
1878 sp->il_offset = il_offset;
1879 sp->native_offset = native_offset;
1881 sp->next_len = decode_value (p, &p);
1882 sp->next = g_new (int, sp->next_len);
1883 for (j = 0; j < sp->next_len; ++j)
1884 sp->next [j] = decode_value (p, &p);
1886 last_il_offset = il_offset;
1887 last_native_offset = native_offset;
1890 mono_domain_lock (domain);
1891 g_hash_table_insert (domain_jit_info (domain)->seq_points, method, seq_points);
1892 mono_domain_unlock (domain);
1895 /* Load debug info */
1896 buf_len = decode_value (p, &p);
1897 mono_debug_add_aot_method (domain, method, code, p, buf_len);
1899 if (amodule != jinfo->method->klass->image->aot_module) {
1902 ji_to_amodule = g_hash_table_new (NULL, NULL);
1903 g_hash_table_insert (ji_to_amodule, jinfo, amodule);
1911 * mono_aot_get_unwind_info:
1913 * Return a pointer to the DWARF unwind info belonging to JI.
1916 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
1918 MonoAotModule *amodule = ji->method->klass->image->aot_module;
1920 guint8 *code = ji->code_start;
1923 g_assert (ji->from_aot);
1925 if (!(code >= amodule->code && code <= amodule->code_end)) {
1926 /* ji belongs to a different aot module than amodule */
1928 g_assert (ji_to_amodule);
1929 amodule = g_hash_table_lookup (ji_to_amodule, ji);
1931 g_assert (code >= amodule->code && code <= amodule->code_end);
1935 p = amodule->unwind_info + ji->used_regs;
1936 *unwind_info_len = decode_value (p, &p);
1940 static G_GNUC_UNUSED int
1941 compare_ints (const void *a, const void *b)
1943 return *(gint32*)a - *(gint32*)b;
1947 msort_code_offsets_internal (gint32 *array, int lo, int hi, gint32 *scratch)
1949 int mid = (lo + hi) / 2;
1956 for (i = lo; i < hi; ++i)
1957 if (array [(i * 2)] > array [(i * 2) + 2])
1960 /* Already sorted */
1964 msort_code_offsets_internal (array, lo, mid, scratch);
1965 msort_code_offsets_internal (array, mid + 1, hi, scratch);
1967 if (array [mid * 2] < array [(mid + 1) * 2])
1973 for (i = lo; i <= hi; i ++) {
1974 if (t_lo <= mid && ((t_hi > hi) || array [t_lo * 2] < array [t_hi * 2])) {
1975 scratch [(i * 2)] = array [t_lo * 2];
1976 scratch [(i * 2) + 1] = array [(t_lo *2) + 1];
1979 scratch [(i * 2)] = array [t_hi * 2];
1980 scratch [(i * 2) + 1] = array [(t_hi *2) + 1];
1984 for (i = lo; i <= hi; ++i) {
1985 array [(i * 2)] = scratch [i * 2];
1986 array [(i * 2) + 1] = scratch [(i * 2) + 1];
1991 msort_code_offsets (gint32 *array, int len)
1995 scratch = g_new (gint32, len * 2);
1996 msort_code_offsets_internal (array, 0, len - 1, scratch);
2001 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
2003 int pos, left, right, offset, offset1, offset2, code_len;
2004 int method_index, table_len, is_wrapper;
2006 MonoAotModule *amodule = image->aot_module;
2009 guint8 *code, *ex_info, *p;
2011 int nmethods = amodule->info.nmethods;
2012 gint32 *code_offsets;
2018 if (domain != mono_get_root_domain ())
2022 offset = (guint8*)addr - amodule->code;
2024 /* Compute a sorted table mapping code offsets to method indexes. */
2025 if (!amodule->sorted_code_offsets) {
2027 code_offsets = g_new0 (gint32, nmethods * 2);
2029 for (i = 0; i < nmethods; ++i) {
2030 /* Skip the -1 entries to speed up sorting */
2031 if (amodule->code_offsets [i] == 0xffffffff)
2033 code_offsets [(offsets_len * 2)] = amodule->code_offsets [i];
2034 code_offsets [(offsets_len *2) + 1] = i;
2037 /* Use a merge sort as this is mostly sorted */
2038 msort_code_offsets (code_offsets, offsets_len);
2039 //qsort (code_offsets, offsets_len, sizeof (gint32) * 2, compare_ints);
2040 for (i = 0; i < offsets_len -1; ++i)
2041 g_assert (code_offsets [(i * 2)] <= code_offsets [(i + 1) * 2]);
2043 if (InterlockedCompareExchangePointer ((gpointer*)&amodule->sorted_code_offsets, code_offsets, NULL) != NULL)
2044 /* Somebody got in before us */
2045 g_free (code_offsets);
2046 amodule->sorted_code_offsets_len = offsets_len;
2049 code_offsets = amodule->sorted_code_offsets;
2050 offsets_len = amodule->sorted_code_offsets_len;
2052 /* Binary search in the sorted_code_offsets table */
2054 right = offsets_len;
2056 pos = (left + right) / 2;
2058 offset1 = code_offsets [(pos * 2)];
2059 if (pos + 1 == offsets_len)
2060 offset2 = amodule->code_end - amodule->code;
2062 offset2 = code_offsets [(pos + 1) * 2];
2064 if (offset < offset1)
2066 else if (offset >= offset2)
2072 g_assert (offset >= code_offsets [(pos * 2)]);
2073 if (pos + 1 < offsets_len)
2074 g_assert (offset < code_offsets [((pos + 1) * 2)]);
2075 method_index = code_offsets [(pos * 2) + 1];
2077 code = &amodule->code [amodule->code_offsets [method_index]];
2078 ex_info = &amodule->blob [mono_aot_get_offset (amodule->ex_info_offsets, method_index)];
2080 if (pos == offsets_len - 1)
2081 code_len = amodule->code_end - code;
2083 code_len = code_offsets [(pos + 1) * 2] - code_offsets [pos * 2];
2085 g_assert ((guint8*)code <= (guint8*)addr && (guint8*)addr < (guint8*)code + code_len);
2087 /* Might be a wrapper/extra method */
2088 if (amodule->extra_methods) {
2090 method = g_hash_table_lookup (amodule->extra_methods, GUINT_TO_POINTER (method_index));
2097 if (method_index >= image->tables [MONO_TABLE_METHOD].rows) {
2099 * This is hit for extra methods which are called directly, so they are
2100 * not in amodule->extra_methods.
2102 table_len = amodule->extra_method_info_offsets [0];
2103 table = amodule->extra_method_info_offsets + 1;
2110 pos = ((left + right) / 2);
2112 g_assert (pos < table_len);
2114 if (table [pos * 2] < method_index)
2116 else if (table [pos * 2] > method_index)
2122 p = amodule->blob + table [(pos * 2) + 1];
2123 is_wrapper = decode_value (p, &p);
2124 g_assert (!is_wrapper);
2125 method = decode_resolve_method_ref (amodule, p, &p);
2128 token = mono_metadata_make_token (MONO_TABLE_METHOD, method_index + 1);
2129 method = mono_get_method (image, token, NULL);
2136 //printf ("F: %s\n", mono_method_full_name (method, TRUE));
2138 jinfo = decode_exception_debug_info (amodule, domain, method, ex_info, addr, code, code_len);
2140 g_assert ((guint8*)addr >= (guint8*)jinfo->code_start);
2141 g_assert ((guint8*)addr < (guint8*)jinfo->code_start + jinfo->code_size);
2143 /* Add it to the normal JitInfo tables */
2144 mono_jit_info_table_add (domain, jinfo);
2150 decode_patch (MonoAotModule *aot_module, MonoMemPool *mp, MonoJumpInfo *ji, guint8 *buf, guint8 **endbuf)
2158 case MONO_PATCH_INFO_METHOD:
2159 case MONO_PATCH_INFO_METHOD_JUMP:
2160 case MONO_PATCH_INFO_ICALL_ADDR:
2161 case MONO_PATCH_INFO_METHOD_RGCTX: {
2165 res = decode_method_ref (aot_module, &ref, p, &p);
2169 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)) {
2170 ji->data.target = mono_create_ftnptr (mono_domain_get (), mono_create_jit_trampoline_from_token (ref.image, ref.token));
2171 ji->type = MONO_PATCH_INFO_ABS;
2175 ji->data.method = ref.method;
2177 ji->data.method = mono_get_method (ref.image, ref.token, NULL);
2178 g_assert (ji->data.method);
2179 mono_class_init (ji->data.method->klass);
2183 case MONO_PATCH_INFO_INTERNAL_METHOD:
2184 case MONO_PATCH_INFO_JIT_ICALL_ADDR: {
2185 guint32 len = decode_value (p, &p);
2187 ji->data.name = (char*)p;
2191 case MONO_PATCH_INFO_METHODCONST:
2193 ji->data.method = decode_resolve_method_ref (aot_module, p, &p);
2194 if (!ji->data.method)
2197 case MONO_PATCH_INFO_VTABLE:
2198 case MONO_PATCH_INFO_CLASS:
2199 case MONO_PATCH_INFO_IID:
2200 case MONO_PATCH_INFO_ADJUSTED_IID:
2202 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2203 if (!ji->data.klass)
2206 case MONO_PATCH_INFO_CLASS_INIT:
2207 case MONO_PATCH_INFO_DELEGATE_TRAMPOLINE:
2208 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2209 if (!ji->data.klass)
2212 case MONO_PATCH_INFO_IMAGE:
2213 ji->data.image = load_image (aot_module, decode_value (p, &p), TRUE);
2214 if (!ji->data.image)
2217 case MONO_PATCH_INFO_FIELD:
2218 case MONO_PATCH_INFO_SFLDA:
2220 ji->data.field = decode_field_info (aot_module, p, &p);
2221 if (!ji->data.field)
2224 case MONO_PATCH_INFO_SWITCH:
2225 ji->data.table = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoBBTable));
2226 ji->data.table->table_size = decode_value (p, &p);
2227 table = mono_domain_alloc (mono_domain_get (), sizeof (gpointer) * ji->data.table->table_size);
2228 ji->data.table->table = (MonoBasicBlock**)table;
2229 for (i = 0; i < ji->data.table->table_size; i++)
2230 table [i] = (gpointer)(gssize)decode_value (p, &p);
2232 case MONO_PATCH_INFO_R4: {
2235 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (float));
2236 val = decode_value (p, &p);
2237 *(float*)ji->data.target = *(float*)&val;
2240 case MONO_PATCH_INFO_R8: {
2244 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (double));
2246 val [0] = decode_value (p, &p);
2247 val [1] = decode_value (p, &p);
2248 v = ((guint64)val [1] << 32) | ((guint64)val [0]);
2249 *(double*)ji->data.target = *(double*)&v;
2252 case MONO_PATCH_INFO_LDSTR:
2253 image = load_image (aot_module, decode_value (p, &p), TRUE);
2256 ji->data.token = mono_jump_info_token_new (mp, image, MONO_TOKEN_STRING + decode_value (p, &p));
2258 case MONO_PATCH_INFO_RVA:
2259 case MONO_PATCH_INFO_DECLSEC:
2260 case MONO_PATCH_INFO_LDTOKEN:
2261 case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
2263 image = load_image (aot_module, decode_value (p, &p), TRUE);
2266 ji->data.token = mono_jump_info_token_new (mp, image, decode_value (p, &p));
2268 ji->data.token->has_context = decode_value (p, &p);
2269 if (ji->data.token->has_context) {
2270 gboolean res = decode_generic_context (aot_module, &ji->data.token->context, p, &p);
2275 case MONO_PATCH_INFO_EXC_NAME:
2276 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2277 if (!ji->data.klass)
2279 ji->data.name = ji->data.klass->name;
2281 case MONO_PATCH_INFO_METHOD_REL:
2282 ji->data.offset = decode_value (p, &p);
2284 case MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG:
2285 case MONO_PATCH_INFO_GENERIC_CLASS_INIT:
2286 case MONO_PATCH_INFO_MONITOR_ENTER:
2287 case MONO_PATCH_INFO_MONITOR_EXIT:
2288 case MONO_PATCH_INFO_GC_CARD_TABLE_ADDR:
2290 case MONO_PATCH_INFO_RGCTX_FETCH: {
2292 MonoJumpInfoRgctxEntry *entry;
2294 entry = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
2295 entry->method = decode_resolve_method_ref (aot_module, p, &p);
2296 entry->in_mrgctx = decode_value (p, &p);
2297 entry->info_type = decode_value (p, &p);
2298 entry->data = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
2299 entry->data->type = decode_value (p, &p);
2301 res = decode_patch (aot_module, mp, entry->data, p, &p);
2304 ji->data.rgctx_entry = entry;
2307 case MONO_PATCH_INFO_SEQ_POINT_INFO:
2309 case MONO_PATCH_INFO_LLVM_IMT_TRAMPOLINE: {
2310 MonoJumpInfoImtTramp *imt_tramp = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoImtTramp));
2312 imt_tramp->method = decode_resolve_method_ref (aot_module, p, &p);
2313 imt_tramp->vt_offset = decode_value (p, &p);
2315 ji->data.imt_tramp = imt_tramp;
2319 g_warning ("unhandled type %d", ji->type);
2320 g_assert_not_reached ();
2331 static MonoJumpInfo*
2332 load_patch_info (MonoAotModule *aot_module, MonoMemPool *mp, int n_patches,
2333 guint32 **got_slots,
2334 guint8 *buf, guint8 **endbuf)
2336 MonoJumpInfo *patches;
2342 patches = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo) * n_patches);
2344 *got_slots = g_malloc (sizeof (guint32) * n_patches);
2346 for (pindex = 0; pindex < n_patches; ++pindex) {
2347 MonoJumpInfo *ji = &patches [pindex];
2352 got_offset = decode_value (p, &p);
2354 if (aot_module->got [got_offset]) {
2355 /* Already loaded */
2356 //printf ("HIT!\n");
2358 shared_p = aot_module->blob + mono_aot_get_offset (aot_module->got_info_offsets, got_offset);
2360 ji->type = decode_value (shared_p, &shared_p);
2362 res = decode_patch (aot_module, mp, ji, shared_p, &shared_p);
2367 (*got_slots) [pindex] = got_offset;
2374 g_free (*got_slots);
2381 register_jump_target_got_slot (MonoDomain *domain, MonoMethod *method, gpointer *got_slot)
2384 * Jump addresses cannot be patched by the trampoline code since it
2385 * does not have access to the caller's address. Instead, we collect
2386 * the addresses of the GOT slots pointing to a method, and patch
2387 * them after the method has been compiled.
2389 MonoJitDomainInfo *info = domain_jit_info (domain);
2392 mono_domain_lock (domain);
2393 if (!info->jump_target_got_slot_hash)
2394 info->jump_target_got_slot_hash = g_hash_table_new (NULL, NULL);
2395 list = g_hash_table_lookup (info->jump_target_got_slot_hash, method);
2396 list = g_slist_prepend (list, got_slot);
2397 g_hash_table_insert (info->jump_target_got_slot_hash, method, list);
2398 mono_domain_unlock (domain);
2404 * Load the method identified by METHOD_INDEX from the AOT image. Return a
2405 * pointer to the native code of the method, or NULL if not found.
2406 * METHOD might not be set if the caller only has the image/token info.
2409 load_method (MonoDomain *domain, MonoAotModule *amodule, MonoImage *image, MonoMethod *method, guint32 token, int method_index)
2412 gboolean from_plt = method == NULL;
2414 int i, pindex, n_patches, used_strings;
2415 gboolean keep_patches = TRUE;
2417 MonoJitInfo *jinfo = NULL;
2418 guint8 *code, *info;
2420 if (mono_profiler_get_events () & MONO_PROFILE_ENTER_LEAVE)
2423 if ((domain != mono_get_root_domain ()) && (!(amodule->info.opts & MONO_OPT_SHARED)))
2424 /* Non shared AOT code can't be used in other appdomains */
2427 if (amodule->out_of_date)
2430 if (amodule->code_offsets [method_index] == 0xffffffff) {
2431 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
2435 method = mono_get_method (image, token, NULL);
2436 full_name = mono_method_full_name (method, TRUE);
2437 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.\n", full_name);
2443 code = &amodule->code [amodule->code_offsets [method_index]];
2445 info = &amodule->blob [mono_aot_get_offset (amodule->method_info_offsets, method_index)];
2448 if (!amodule->methods_loaded)
2449 amodule->methods_loaded = g_new0 (guint32, amodule->info.nmethods + 1);
2452 if ((amodule->methods_loaded [method_index / 32] >> (method_index % 32)) & 0x1)
2455 if (mono_last_aot_method != -1) {
2456 if (mono_jit_stats.methods_aot >= mono_last_aot_method)
2458 else if (mono_jit_stats.methods_aot == mono_last_aot_method - 1) {
2460 method = mono_get_method (image, token, NULL);
2462 char *name = mono_method_full_name (method, TRUE);
2463 printf ("LAST AOT METHOD: %s.\n", name);
2466 printf ("LAST AOT METHOD: %p %d\n", code, method_index);
2474 klass = method->klass;
2475 decode_klass_ref (amodule, p, &p);
2477 klass = decode_klass_ref (amodule, p, &p);
2480 if (amodule->info.opts & MONO_OPT_SHARED)
2481 used_strings = decode_value (p, &p);
2485 for (i = 0; i < used_strings; i++) {
2486 guint token = decode_value (p, &p);
2487 mono_ldstr (mono_get_root_domain (), image, mono_metadata_token_index (token));
2490 if (amodule->info.opts & MONO_OPT_SHARED)
2491 keep_patches = FALSE;
2493 n_patches = decode_value (p, &p);
2495 keep_patches = FALSE;
2498 MonoJumpInfo *patches;
2504 mp = mono_mempool_new ();
2506 patches = load_patch_info (amodule, mp, n_patches, &got_slots, p, &p);
2507 if (patches == NULL)
2510 for (pindex = 0; pindex < n_patches; ++pindex) {
2511 MonoJumpInfo *ji = &patches [pindex];
2513 if (!amodule->got [got_slots [pindex]]) {
2514 amodule->got [got_slots [pindex]] = mono_resolve_patch_target (method, domain, code, ji, TRUE);
2515 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
2516 amodule->got [got_slots [pindex]] = mono_create_ftnptr (domain, amodule->got [got_slots [pindex]]);
2517 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
2518 register_jump_target_got_slot (domain, ji->data.method, &(amodule->got [got_slots [pindex]]));
2520 ji->type = MONO_PATCH_INFO_NONE;
2526 mono_mempool_destroy (mp);
2529 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
2533 method = mono_get_method (image, token, NULL);
2535 full_name = mono_method_full_name (method, TRUE);
2538 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
2540 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);
2546 mono_jit_stats.methods_aot++;
2548 amodule->methods_loaded [method_index / 32] |= 1 << (method_index % 32);
2552 if (method && method->wrapper_type)
2553 g_hash_table_insert (amodule->method_to_code, method, code);
2557 if (mono_profiler_get_events () & MONO_PROFILE_JIT_COMPILATION) {
2561 method = mono_get_method (image, token, NULL);
2564 mono_profiler_method_jit (method);
2565 jinfo = mono_jit_info_table_find (domain, (char*)code);
2567 mono_profiler_method_end_jit (method, jinfo, MONO_PROFILE_OK);
2570 if (from_plt && klass && !klass->generic_container)
2571 mono_runtime_class_init (mono_class_vtable (domain, klass));
2576 /* FIXME: The space in domain->mp is wasted */
2577 if (amodule->info.opts & MONO_OPT_SHARED)
2578 /* No need to cache patches */
2579 mono_mempool_destroy (mp);
2588 find_extra_method_in_amodule (MonoAotModule *amodule, MonoMethod *method, const char *name)
2590 guint32 table_size, entry_size, hash;
2591 guint32 *table, *entry;
2593 static guint32 n_extra_decodes;
2598 table_size = amodule->extra_method_table [0];
2599 table = amodule->extra_method_table + 1;
2602 hash = mono_aot_method_hash (method) % table_size;
2604 entry = &table [hash * entry_size];
2611 guint32 key = entry [0];
2612 guint32 value = entry [1];
2613 guint32 next = entry [entry_size - 1];
2616 int is_wrapper_name;
2618 p = amodule->blob + key;
2619 is_wrapper_name = decode_value (p, &p);
2620 if (is_wrapper_name) {
2621 int wrapper_type = decode_value (p, &p);
2622 if (wrapper_type == method->wrapper_type && !strcmp (name, (char*)p)) {
2630 if (!amodule->method_ref_to_method)
2631 amodule->method_ref_to_method = g_hash_table_new (NULL, NULL);
2632 m = g_hash_table_lookup (amodule->method_ref_to_method, p);
2635 m = decode_resolve_method_ref_with_target (amodule, method, p, &p);
2638 g_hash_table_insert (amodule->method_ref_to_method, orig_p, m);
2647 /* Special case: wrappers of shared generic methods */
2648 if (m && method->wrapper_type && m->wrapper_type == m->wrapper_type &&
2649 method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
2650 MonoMethod *w1 = mono_marshal_method_from_wrapper (method);
2651 MonoMethod *w2 = mono_marshal_method_from_wrapper (m);
2653 if (w1->is_inflated && ((MonoMethodInflated *)w1)->declaring == w2) {
2659 /* Methods decoded needlessly */
2661 //printf ("%d %s %s %p\n", n_extra_decodes, mono_method_full_name (method, TRUE), mono_method_full_name (m, TRUE), orig_p);
2667 entry = &table [next * entry_size];
2676 add_module_cb (gpointer key, gpointer value, gpointer user_data)
2678 g_ptr_array_add ((GPtrArray*)user_data, value);
2682 * find_extra_method:
2684 * Try finding METHOD in the extra_method table in all AOT images.
2685 * Return its method index, or 0xffffff if not found. Set OUT_AMODULE to the AOT
2686 * module where the method was found.
2689 find_extra_method (MonoMethod *method, MonoAotModule **out_amodule)
2696 if (method->wrapper_type)
2697 name = mono_aot_wrapper_name (method);
2699 /* Try the method's module first */
2700 *out_amodule = method->klass->image->aot_module;
2701 index = find_extra_method_in_amodule (method->klass->image->aot_module, method, name);
2702 if (index != 0xffffff) {
2708 * Try all other modules.
2709 * This is needed because generic instances klass->image points to the image
2710 * containing the generic definition, but the native code is generated to the
2711 * AOT image which contains the reference.
2714 /* Make a copy to avoid doing the search inside the aot lock */
2715 modules = g_ptr_array_new ();
2717 g_hash_table_foreach (aot_modules, add_module_cb, modules);
2721 for (i = 0; i < modules->len; ++i) {
2722 MonoAotModule *amodule = g_ptr_array_index (modules, i);
2724 if (amodule != method->klass->image->aot_module)
2725 index = find_extra_method_in_amodule (amodule, method, name);
2726 if (index != 0xffffff) {
2727 *out_amodule = amodule;
2732 g_ptr_array_free (modules, TRUE);
2739 * mono_aot_get_method:
2741 * Return a pointer to the AOTed native code for METHOD if it can be found,
2743 * On platforms with function pointers, this doesn't return a function pointer.
2746 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
2748 MonoClass *klass = method->klass;
2749 guint32 method_index;
2750 MonoAotModule *amodule = klass->image->aot_module;
2756 if (amodule->out_of_date)
2759 if ((method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
2760 (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
2761 (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
2762 (method->flags & METHOD_ATTRIBUTE_ABSTRACT))
2766 * Use the original method instead of its invoke-with-check wrapper.
2767 * This is not a problem when using full-aot, since it doesn't support
2770 if (mono_aot_only && method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)
2771 return mono_aot_get_method (domain, mono_marshal_method_from_wrapper (method));
2773 g_assert (klass->inited);
2775 /* Find method index */
2776 if (method->is_inflated && mono_method_is_generic_sharable_impl_full (method, FALSE, FALSE)) {
2778 * For generic methods, we store the fully shared instance in place of the
2781 method = mono_method_get_declaring_generic_method (method);
2782 method_index = mono_metadata_token_index (method->token) - 1;
2783 } else if (method->is_inflated || !method->token) {
2784 /* This hash table is used to avoid the slower search in the extra_method_table in the AOT image */
2786 code = g_hash_table_lookup (amodule->method_to_code, method);
2791 method_index = find_extra_method (method, &amodule);
2793 * Special case the ICollection<T> wrappers for arrays, as they cannot
2794 * be statically enumerated, and each wrapper ends up calling the same
2797 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED && method->klass->rank && strstr (method->name, "System.Collections.Generic")) {
2798 MonoMethod *m = mono_aot_get_array_helper_from_wrapper (method);
2800 code = mono_aot_get_method (domain, m);
2802 if (mono_method_needs_static_rgctx_invoke (m, FALSE)) {
2803 code = mono_create_static_rgctx_trampoline (m, mono_create_ftnptr (domain, code));
2804 /* The call above returns an ftnptr */
2805 code = mono_get_addr_from_ftnptr (code);
2813 * Special case Array.GetGenericValueImpl which is a generic icall.
2814 * Generic sharing currently can't handle it, but the icall returns data using
2815 * an out parameter, so the managed-to-native wrappers can share the same code.
2817 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass == mono_defaults.array_class && !strcmp (method->name, "GetGenericValueImpl")) {
2819 MonoGenericContext ctx;
2820 MonoType *args [16];
2822 if (mono_method_signature (method)->params [1]->type == MONO_TYPE_OBJECT)
2823 /* Avoid recursion */
2826 m = mono_class_get_method_from_name (mono_defaults.array_class, "GetGenericValueImpl", 2);
2829 memset (&ctx, 0, sizeof (ctx));
2830 args [0] = &mono_defaults.object_class->byval_arg;
2831 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
2833 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method (m, &ctx), TRUE, TRUE);
2836 * Get the code for the <object> instantiation which should be emitted into
2837 * the mscorlib aot image by the AOT compiler.
2839 code = mono_aot_get_method (domain, m);
2844 if (method_index == 0xffffff && method->is_inflated && mono_method_is_generic_sharable_impl_full (method, FALSE, TRUE)) {
2845 /* Partial sharing */
2846 method_index = find_extra_method (mini_get_shared_method (method), &amodule);
2849 if (method_index == 0xffffff) {
2850 if (mono_aot_only && mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
2853 full_name = mono_method_full_name (method, TRUE);
2854 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.\n", full_name);
2860 if (method_index == 0xffffff)
2863 /* Needed by find_jit_info */
2865 if (!amodule->extra_methods)
2866 amodule->extra_methods = g_hash_table_new (NULL, NULL);
2867 g_hash_table_insert (amodule->extra_methods, GUINT_TO_POINTER (method_index), method);
2871 method_index = mono_metadata_token_index (method->token) - 1;
2874 return load_method (domain, amodule, klass->image, method, method->token, method_index);
2878 * Same as mono_aot_get_method, but we try to avoid loading any metadata from the
2882 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
2884 MonoAotModule *aot_module = image->aot_module;
2890 method_index = mono_metadata_token_index (token) - 1;
2892 return load_method (domain, aot_module, image, NULL, token, method_index);
2898 } IsGotEntryUserData;
2901 check_is_got_entry (gpointer key, gpointer value, gpointer user_data)
2903 IsGotEntryUserData *data = (IsGotEntryUserData*)user_data;
2904 MonoAotModule *aot_module = (MonoAotModule*)value;
2906 if (aot_module->got && (data->addr >= (guint8*)(aot_module->got)) && (data->addr < (guint8*)(aot_module->got + aot_module->info.got_size)))
2911 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
2913 IsGotEntryUserData user_data;
2918 user_data.addr = addr;
2919 user_data.res = FALSE;
2921 g_hash_table_foreach (aot_modules, check_is_got_entry, &user_data);
2924 return user_data.res;
2929 MonoAotModule *module;
2930 } FindAotModuleUserData;
2933 find_aot_module_cb (gpointer key, gpointer value, gpointer user_data)
2935 FindAotModuleUserData *data = (FindAotModuleUserData*)user_data;
2936 MonoAotModule *aot_module = (MonoAotModule*)value;
2938 if ((data->addr >= (guint8*)(aot_module->code)) && (data->addr < (guint8*)(aot_module->code_end)))
2939 data->module = aot_module;
2942 static inline MonoAotModule*
2943 find_aot_module (guint8 *code)
2945 FindAotModuleUserData user_data;
2950 /* Reading these need no locking */
2951 if (((gsize)code < aot_code_low_addr) || ((gsize)code > aot_code_high_addr))
2954 user_data.addr = code;
2955 user_data.module = NULL;
2958 g_hash_table_foreach (aot_modules, find_aot_module_cb, &user_data);
2961 return user_data.module;
2965 mono_aot_patch_plt_entry (guint8 *code, gpointer *got, mgreg_t *regs, guint8 *addr)
2968 * Since AOT code is only used in the root domain,
2969 * mono_domain_get () != mono_get_root_domain () means the calling method
2970 * is AppDomain:InvokeInDomain, so this is the same check as in
2971 * mono_method_same_domain () but without loading the metadata for the method.
2973 if (mono_domain_get () == mono_get_root_domain ())
2974 mono_arch_patch_plt_entry (code, got, regs, addr);
2978 * mono_aot_plt_resolve:
2980 * This function is called by the entries in the PLT to resolve the actual method that
2981 * needs to be called. It returns a trampoline to the method and patches the PLT entry.
2982 * Returns NULL if the something cannot be loaded.
2985 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
2987 #ifdef MONO_ARCH_AOT_SUPPORTED
2988 guint8 *p, *target, *plt_entry;
2990 MonoAotModule *module = (MonoAotModule*)aot_module;
2991 gboolean res, no_ftnptr = FALSE;
2994 //printf ("DYN: %p %d\n", aot_module, plt_info_offset);
2996 p = &module->blob [plt_info_offset];
2998 ji.type = decode_value (p, &p);
3000 mp = mono_mempool_new_size (512);
3001 res = decode_patch (module, mp, &ji, p, &p);
3004 mono_mempool_destroy (mp);
3009 * Avoid calling resolve_patch_target in the full-aot case if possible, since
3010 * it would create a trampoline, and we don't need that.
3011 * We could do this only if the method does not need the special handling
3012 * in mono_magic_trampoline ().
3014 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) &&
3015 !mono_method_needs_static_rgctx_invoke (ji.data.method, FALSE)) {
3016 target = mono_jit_compile_method (ji.data.method);
3019 target = mono_resolve_patch_target (NULL, mono_domain_get (), NULL, &ji, TRUE);
3023 * The trampoline expects us to return a function descriptor on platforms which use
3024 * it, but resolve_patch_target returns a direct function pointer for some type of
3025 * patches, so have to translate between the two.
3026 * FIXME: Clean this up, but how ?
3028 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) {
3029 /* These should already have a function descriptor */
3030 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3031 /* Our function descriptors have a 0 environment, gcc created ones don't */
3032 if (ji.type != MONO_PATCH_INFO_INTERNAL_METHOD && ji.type != MONO_PATCH_INFO_JIT_ICALL_ADDR && ji.type != MONO_PATCH_INFO_ICALL_ADDR)
3033 g_assert (((gpointer*)target) [2] == 0);
3036 } else if (!no_ftnptr) {
3037 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3038 g_assert (((gpointer*)target) [2] != 0);
3040 target = mono_create_ftnptr (mono_domain_get (), target);
3043 mono_mempool_destroy (mp);
3045 /* Patch the PLT entry with target which might be the actual method not a trampoline */
3046 plt_entry = mono_aot_get_plt_entry (code);
3047 g_assert (plt_entry);
3048 mono_aot_patch_plt_entry (plt_entry, module->got, NULL, target);
3052 g_assert_not_reached ();
3060 * Initialize the PLT table of the AOT module. Called lazily when the first AOT
3061 * method in the module is loaded to avoid committing memory by writing to it.
3062 * LOCKING: Assumes the AOT lock is held.
3065 init_plt (MonoAotModule *amodule)
3070 if (amodule->plt_inited)
3073 tramp = mono_create_specific_trampoline (amodule, MONO_TRAMPOLINE_AOT_PLT, mono_get_root_domain (), NULL);
3076 * Initialize the PLT entries in the GOT to point to the default targets.
3079 tramp = mono_create_ftnptr (mono_domain_get (), tramp);
3080 for (i = 1; i < amodule->info.plt_size; ++i)
3081 /* All the default entries point to the AOT trampoline */
3082 ((gpointer*)amodule->got)[amodule->info.plt_got_offset_base + i] = tramp;
3084 amodule->plt_inited = TRUE;
3088 * mono_aot_get_plt_entry:
3090 * Return the address of the PLT entry called by the code at CODE if exists.
3093 mono_aot_get_plt_entry (guint8 *code)
3095 MonoAotModule *aot_module = find_aot_module (code);
3100 #ifdef MONO_ARCH_AOT_SUPPORTED
3102 guint8 *target = mono_arch_get_call_target (code);
3104 if ((target >= (guint8*)(aot_module->plt)) && (target < (guint8*)(aot_module->plt_end)))
3108 g_assert_not_reached ();
3115 * mono_aot_get_plt_info_offset:
3117 * Return the PLT info offset belonging to the plt entry called by CODE.
3120 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
3122 guint8 *plt_entry = mono_aot_get_plt_entry (code);
3124 g_assert (plt_entry);
3126 /* The offset is embedded inside the code after the plt entry */
3127 #ifdef MONO_ARCH_AOT_SUPPORTED
3128 return mono_arch_get_plt_info_offset (plt_entry, regs, code);
3130 g_assert_not_reached ();
3136 mono_create_ftnptr_malloc (guint8 *code)
3138 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3139 MonoPPCFunctionDescriptor *ftnptr = g_malloc0 (sizeof (MonoPPCFunctionDescriptor));
3141 ftnptr->code = code;
3152 * mono_aot_register_jit_icall:
3154 * Register a JIT icall which is called by trampolines in full-aot mode. This should
3155 * be called from mono_arch_init () during startup.
3158 mono_aot_register_jit_icall (const char *name, gpointer addr)
3160 /* No need for locking */
3161 if (!aot_jit_icall_hash)
3162 aot_jit_icall_hash = g_hash_table_new (g_str_hash, g_str_equal);
3163 g_hash_table_insert (aot_jit_icall_hash, (char*)name, addr);
3169 * Load the function named NAME from the aot image.
3172 load_function (MonoAotModule *amodule, const char *name)
3176 int n_patches, pindex;
3182 symbol = g_strdup_printf ("%s", name);
3183 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&code);
3186 g_error ("Symbol '%s' not found in AOT file '%s'.\n", name, amodule->aot_name);
3188 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT FOUND function '%s' in AOT file '%s'.\n", name, amodule->aot_name);
3192 symbol = g_strdup_printf ("%s_p", name);
3193 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&p);
3196 /* Nothing to patch */
3199 p = amodule->blob + *(guint32*)p;
3201 /* Similar to mono_aot_load_method () */
3203 n_patches = decode_value (p, &p);
3206 MonoJumpInfo *patches;
3209 mp = mono_mempool_new ();
3211 patches = load_patch_info (amodule, mp, n_patches, &got_slots, p, &p);
3214 for (pindex = 0; pindex < n_patches; ++pindex) {
3215 MonoJumpInfo *ji = &patches [pindex];
3218 if (amodule->got [got_slots [pindex]])
3222 * When this code is executed, the runtime may not be initalized yet, so
3223 * resolve the patch info by hand.
3225 if (ji->type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
3226 if (!strcmp (ji->data.name, "mono_get_lmf_addr")) {
3227 target = mono_get_lmf_addr;
3228 } else if (!strcmp (ji->data.name, "mono_thread_force_interruption_checkpoint")) {
3229 target = mono_thread_force_interruption_checkpoint;
3230 } else if (!strcmp (ji->data.name, "mono_exception_from_token")) {
3231 target = mono_exception_from_token;
3232 } else if (!strcmp (ji->data.name, "mono_throw_exception")) {
3233 target = mono_get_throw_exception ();
3234 } else if (strstr (ji->data.name, "trampoline_func_") == ji->data.name) {
3235 int tramp_type2 = atoi (ji->data.name + strlen ("trampoline_func_"));
3236 target = (gpointer)mono_get_trampoline_func (tramp_type2);
3237 } else if (strstr (ji->data.name, "specific_trampoline_lazy_fetch_") == ji->data.name) {
3238 /* atoll is needed because the the offset is unsigned */
3242 res = sscanf (ji->data.name, "specific_trampoline_lazy_fetch_%u", &slot);
3243 g_assert (res == 1);
3244 target = mono_create_specific_trampoline (GUINT_TO_POINTER (slot), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, mono_get_root_domain (), NULL);
3245 target = mono_create_ftnptr_malloc (target);
3246 } else if (!strcmp (ji->data.name, "specific_trampoline_monitor_enter")) {
3247 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_MONITOR_ENTER, mono_get_root_domain (), NULL);
3248 target = mono_create_ftnptr_malloc (target);
3249 } else if (!strcmp (ji->data.name, "specific_trampoline_monitor_exit")) {
3250 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_MONITOR_EXIT, mono_get_root_domain (), NULL);
3251 target = mono_create_ftnptr_malloc (target);
3252 } else if (!strcmp (ji->data.name, "specific_trampoline_generic_class_init")) {
3253 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_GENERIC_CLASS_INIT, mono_get_root_domain (), NULL);
3254 target = mono_create_ftnptr_malloc (target);
3255 } else if (!strcmp (ji->data.name, "mono_thread_get_and_clear_pending_exception")) {
3256 target = mono_thread_get_and_clear_pending_exception;
3257 } else if (strstr (ji->data.name, "generic_trampoline_")) {
3258 target = mono_aot_get_trampoline (ji->data.name);
3259 } else if (aot_jit_icall_hash && g_hash_table_lookup (aot_jit_icall_hash, ji->data.name)) {
3260 /* Registered by mono_arch_init () */
3261 target = g_hash_table_lookup (aot_jit_icall_hash, ji->data.name);
3263 fprintf (stderr, "Unknown relocation '%s'\n", ji->data.name);
3264 g_assert_not_reached ();
3268 /* Hopefully the code doesn't have patches which need method or
3271 target = mono_resolve_patch_target (NULL, NULL, code, ji, FALSE);
3275 amodule->got [got_slots [pindex]] = target;
3280 mono_mempool_destroy (mp);
3287 * Return the trampoline identified by NAME from the mscorlib AOT file.
3288 * On ppc64, this returns a function descriptor.
3291 mono_aot_get_trampoline (const char *name)
3294 MonoAotModule *amodule;
3296 image = mono_defaults.corlib;
3299 amodule = image->aot_module;
3302 return mono_create_ftnptr_malloc (load_function (amodule, name));
3305 /* Return a given kind of trampoline */
3307 get_numerous_trampoline (MonoAotTrampoline tramp_type, int n_got_slots, MonoAotModule **out_amodule, guint32 *got_offset, guint32 *out_tramp_size)
3309 MonoAotModule *amodule;
3310 int index, tramp_size;
3313 /* Currently, we keep all trampolines in the mscorlib AOT image */
3314 image = mono_defaults.corlib;
3319 amodule = image->aot_module;
3322 *out_amodule = amodule;
3324 if (amodule->trampoline_index [tramp_type] == amodule->info.num_trampolines [tramp_type])
3325 g_error ("Ran out of trampolines of type %d in '%s' (%d)\n", tramp_type, image->name, amodule->info.num_trampolines [tramp_type]);
3327 index = amodule->trampoline_index [tramp_type] ++;
3331 *got_offset = amodule->info.trampoline_got_offset_base [tramp_type] + (index * n_got_slots);
3333 tramp_size = amodule->info.trampoline_size [tramp_type];
3336 *out_tramp_size = tramp_size;
3338 return amodule->trampolines [tramp_type] + (index * tramp_size);
3342 * Return a specific trampoline from the AOT file.
3345 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
3347 MonoAotModule *amodule;
3348 guint32 got_offset, tramp_size;
3349 guint8 *code, *tramp;
3350 static gpointer generic_trampolines [MONO_TRAMPOLINE_NUM];
3351 static gboolean inited;
3352 static guint32 num_trampolines;
3358 mono_counters_register ("Specific trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &num_trampolines);
3367 if (!generic_trampolines [tramp_type]) {
3370 symbol = mono_get_generic_trampoline_name (tramp_type);
3371 generic_trampolines [tramp_type] = mono_aot_get_trampoline (symbol);
3375 tramp = generic_trampolines [tramp_type];
3378 code = get_numerous_trampoline (MONO_AOT_TRAMP_SPECIFIC, 2, &amodule, &got_offset, &tramp_size);
3380 amodule->got [got_offset] = tramp;
3381 amodule->got [got_offset + 1] = arg1;
3384 *code_len = tramp_size;
3390 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
3392 MonoAotModule *amodule;
3396 code = get_numerous_trampoline (MONO_AOT_TRAMP_STATIC_RGCTX, 2, &amodule, &got_offset, NULL);
3398 amodule->got [got_offset] = ctx;
3399 amodule->got [got_offset + 1] = addr;
3401 /* The caller expects an ftnptr */
3402 return mono_create_ftnptr (mono_domain_get (), code);
3406 mono_aot_get_unbox_trampoline (MonoMethod *method)
3408 guint32 method_index = mono_metadata_token_index (method->token) - 1;
3409 MonoAotModule *amodule;
3413 if (method->is_inflated && !mono_method_is_generic_sharable_impl (method, FALSE)) {
3414 guint32 index = find_extra_method (method, &amodule);
3415 g_assert (index != 0xffffff);
3417 symbol = g_strdup_printf ("ut_e_%d", index);
3419 amodule = method->klass->image->aot_module;
3422 symbol = g_strdup_printf ("ut_%d", method_index);
3424 code = load_function (amodule, symbol);
3427 /* The caller expects an ftnptr */
3428 return mono_create_ftnptr (mono_domain_get (), code);
3432 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
3437 symbol = mono_get_rgctx_fetch_trampoline_name (slot);
3438 code = load_function (mono_defaults.corlib->aot_module, symbol);
3440 /* The caller expects an ftnptr */
3441 return mono_create_ftnptr (mono_domain_get (), code);
3445 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
3451 MonoAotModule *amodule;
3453 code = get_numerous_trampoline (MONO_AOT_TRAMP_IMT_THUNK, 1, &amodule, &got_offset, NULL);
3455 /* Save the entries into an array */
3456 buf = mono_domain_alloc (domain, (count + 1) * 2 * sizeof (gpointer));
3457 for (i = 0; i < count; ++i) {
3458 MonoIMTCheckItem *item = imt_entries [i];
3460 g_assert (item->key);
3462 g_assert (!item->has_target_code);
3464 buf [(i * 2)] = item->key;
3465 buf [(i * 2) + 1] = &(vtable->vtable [item->value.vtable_slot]);
3467 buf [(count * 2)] = NULL;
3468 buf [(count * 2) + 1] = fail_tramp;
3470 amodule->got [got_offset] = buf;
3476 * mono_aot_set_make_unreadable:
3478 * Set whenever to make all mmaped memory unreadable. In conjuction with a
3479 * SIGSEGV handler, this is useful to find out which pages the runtime tries to read.
3482 mono_aot_set_make_unreadable (gboolean unreadable)
3486 make_unreadable = unreadable;
3488 if (make_unreadable && !inited) {
3489 mono_counters_register ("AOT pagefaults", MONO_COUNTER_JIT | MONO_COUNTER_INT, &n_pagefaults);
3494 MonoAotModule *module;
3499 find_map (gpointer key, gpointer value, gpointer user_data)
3501 MonoAotModule *module = (MonoAotModule*)value;
3502 FindMapUserData *data = (FindMapUserData*)user_data;
3505 if ((data->ptr >= module->mem_begin) && (data->ptr < module->mem_end))
3506 data->module = module;
3509 static MonoAotModule*
3510 find_module_for_addr (void *ptr)
3512 FindMapUserData data;
3514 if (!make_unreadable)
3518 data.ptr = (guint8*)ptr;
3521 g_hash_table_foreach (aot_modules, (GHFunc)find_map, &data);
3528 * mono_aot_is_pagefault:
3530 * Should be called from a SIGSEGV signal handler to find out whenever @ptr is
3531 * within memory allocated by this module.
3534 mono_aot_is_pagefault (void *ptr)
3536 if (!make_unreadable)
3540 * Not signal safe, but SIGSEGV's are synchronous, and
3541 * this is only turned on by a MONO_DEBUG option.
3543 return find_module_for_addr (ptr) != NULL;
3547 * mono_aot_handle_pagefault:
3549 * Handle a pagefault caused by an unreadable page by making it readable again.
3552 mono_aot_handle_pagefault (void *ptr)
3554 #ifndef PLATFORM_WIN32
3555 guint8* start = (guint8*)ROUND_DOWN (((gssize)ptr), mono_pagesize ());
3559 res = mono_mprotect (start, mono_pagesize (), MONO_MMAP_READ|MONO_MMAP_WRITE|MONO_MMAP_EXEC);
3560 g_assert (res == 0);
3571 mono_aot_init (void)
3576 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
3582 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
3588 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
3594 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
3600 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
3606 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
3612 mono_aot_get_plt_entry (guint8 *code)
3618 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
3624 mono_aot_patch_plt_entry (guint8 *code, gpointer *got, mgreg_t *regs, guint8 *addr)
3629 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
3635 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
3637 g_assert_not_reached ();
3643 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
3645 g_assert_not_reached ();
3650 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
3652 g_assert_not_reached ();
3657 mono_aot_get_trampoline (const char *name)
3659 g_assert_not_reached ();
3664 mono_aot_get_unbox_trampoline (MonoMethod *method)
3666 g_assert_not_reached ();
3671 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
3673 g_assert_not_reached ();
3678 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
3680 g_assert_not_reached ();
3685 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
3687 g_assert_not_reached ();
3692 mono_aot_register_jit_icall (const char *name, gpointer addr)