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"
68 #elif defined(__APPLE__) && defined(TARGET_X86) && !defined(__native_client_codegen__)
69 #define SHARED_EXT ".dylib"
71 #define SHARED_EXT ".so"
74 #define ALIGN_PTR_TO(ptr,align) (gpointer)((((gssize)(ptr)) + (align - 1)) & (~(align - 1)))
75 #define ROUND_DOWN(VALUE,SIZE) ((VALUE) & ~((SIZE) - 1))
77 typedef struct MonoAotModule {
79 /* Pointer to the Global Offset Table */
81 GHashTable *name_cache;
82 GHashTable *extra_methods;
83 /* Maps methods to their code */
84 GHashTable *method_to_code;
85 /* Maps pointers into the method info to the methods themselves */
86 GHashTable *method_ref_to_method;
87 MonoAssemblyName *image_names;
89 MonoAssembly *assembly;
90 MonoImage **image_table;
91 guint32 image_table_len;
101 gint32 *code_offsets;
102 /* This contains <offset, index> pairs sorted by offset */
103 /* This is needed because LLVM emitted methods can be in any order */
104 gint32 *sorted_code_offsets;
105 gint32 sorted_code_offsets_len;
106 guint32 *method_info_offsets;
107 guint32 *got_info_offsets;
108 guint32 *ex_info_offsets;
109 guint32 *class_info_offsets;
110 guint32 *methods_loaded;
111 guint16 *class_name_table;
112 guint32 *extra_method_table;
113 guint32 *extra_method_info_offsets;
116 /* Points to the mono EH data created by LLVM */
117 guint8 *mono_eh_frame;
119 /* Points to the trampolines */
120 guint8 *trampolines [MONO_AOT_TRAMP_NUM];
121 /* The first unused trampoline of each kind */
122 guint32 trampoline_index [MONO_AOT_TRAMP_NUM];
124 MonoAotFileInfo info;
130 static GHashTable *aot_modules;
131 #define mono_aot_lock() EnterCriticalSection (&aot_mutex)
132 #define mono_aot_unlock() LeaveCriticalSection (&aot_mutex)
133 static CRITICAL_SECTION aot_mutex;
136 * Maps assembly names to the mono_aot_module_<NAME>_info symbols in the
137 * AOT modules registered by mono_aot_register_module ().
139 static GHashTable *static_aot_modules;
142 * Maps MonoJitInfo* to the aot module they belong to, this can be different
143 * from ji->method->klass->image's aot module for generic instances.
145 static GHashTable *ji_to_amodule;
148 * Whenever to AOT compile loaded assemblies on demand and store them in
149 * a cache under $HOME/.mono/aot-cache.
151 static gboolean use_aot_cache = FALSE;
154 * Whenever to spawn a new process to AOT a file or do it in-process. Only relevant if
155 * use_aot_cache is TRUE.
157 static gboolean spawn_compiler = TRUE;
160 static gint32 mono_last_aot_method = -1;
162 static gboolean make_unreadable = FALSE;
163 static guint32 name_table_accesses = 0;
164 static guint32 n_pagefaults = 0;
166 /* Used to speed-up find_aot_module () */
167 static gsize aot_code_low_addr = (gssize)-1;
168 static gsize aot_code_high_addr = 0;
170 static GHashTable *aot_jit_icall_hash;
173 init_plt (MonoAotModule *info);
175 /*****************************************************/
177 /*****************************************************/
182 * Load one of the images referenced by AMODULE. Returns NULL if the image is not
183 * found, and sets the loader error if SET_ERROR is TRUE.
186 load_image (MonoAotModule *amodule, int index, gboolean set_error)
188 MonoAssembly *assembly;
189 MonoImageOpenStatus status;
191 g_assert (index < amodule->image_table_len);
193 if (amodule->image_table [index])
194 return amodule->image_table [index];
195 if (amodule->out_of_date)
198 assembly = mono_assembly_load (&amodule->image_names [index], amodule->assembly->basedir, &status);
200 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);
201 amodule->out_of_date = TRUE;
204 char *full_name = mono_stringify_assembly_name (&amodule->image_names [index]);
205 mono_loader_set_error_assembly_load (full_name, FALSE);
211 if (strcmp (assembly->image->guid, amodule->image_guids [index])) {
212 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);
213 amodule->out_of_date = TRUE;
217 amodule->image_table [index] = assembly->image;
218 return assembly->image;
222 decode_value (guint8 *ptr, guint8 **rptr)
227 if ((b & 0x80) == 0){
230 } else if ((b & 0x40) == 0){
231 len = ((b & 0x3f) << 8 | ptr [1]);
233 } else if (b != 0xff) {
234 len = ((b & 0x1f) << 24) |
241 len = (ptr [1] << 24) | (ptr [2] << 16) | (ptr [3] << 8) | ptr [4];
247 //printf ("DECODE: %d.\n", len);
252 * mono_aot_get_method:
254 * Decode an offset table emitted by emit_offset_table (), returning the INDEXth
258 mono_aot_get_offset (guint32 *table, int index)
260 int i, group, ngroups, index_entry_size;
261 int start_offset, offset, noffsets, group_size;
262 guint8 *data_start, *p;
263 guint32 *index32 = NULL;
264 guint16 *index16 = NULL;
266 noffsets = table [0];
267 group_size = table [1];
269 index_entry_size = table [3];
270 group = index / group_size;
272 if (index_entry_size == 2) {
273 index16 = (guint16*)&table [4];
274 data_start = (guint8*)&index16 [ngroups];
275 p = data_start + index16 [group];
277 index32 = (guint32*)&table [4];
278 data_start = (guint8*)&index32 [ngroups];
279 p = data_start + index32 [group];
282 /* offset will contain the value of offsets [group * group_size] */
283 offset = start_offset = decode_value (p, &p);
284 for (i = group * group_size + 1; i <= index; ++i) {
285 offset += decode_value (p, &p);
288 //printf ("Offset lookup: %d -> %d, start=%d, p=%d\n", index, offset, start_offset, table [3 + group]);
294 decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf);
297 decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf);
299 static MonoGenericInst*
300 decode_generic_inst (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
303 MonoType **type_argv;
304 MonoGenericInst *inst;
307 type_argc = decode_value (p, &p);
308 type_argv = g_new0 (MonoType*, type_argc);
310 for (i = 0; i < type_argc; ++i) {
311 MonoClass *pclass = decode_klass_ref (module, p, &p);
316 type_argv [i] = &pclass->byval_arg;
319 inst = mono_metadata_get_generic_inst (type_argc, type_argv);
328 decode_generic_context (MonoAotModule *module, MonoGenericContext *ctx, guint8 *buf, guint8 **endbuf)
330 gboolean has_class_inst, has_method_inst;
333 has_class_inst = decode_value (p, &p);
334 if (has_class_inst) {
335 ctx->class_inst = decode_generic_inst (module, p, &p);
336 if (!ctx->class_inst)
339 has_method_inst = decode_value (p, &p);
340 if (has_method_inst) {
341 ctx->method_inst = decode_generic_inst (module, p, &p);
342 if (!ctx->method_inst)
351 decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
354 MonoClass *klass, *eklass;
358 token = decode_value (p, &p);
363 if (mono_metadata_token_table (token) == 0) {
364 image = load_image (module, decode_value (p, &p), TRUE);
367 klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF + token);
368 } else if (mono_metadata_token_table (token) == MONO_TABLE_TYPESPEC) {
369 if (token == MONO_TOKEN_TYPE_SPEC) {
370 MonoTypeEnum type = decode_value (p, &p);
372 if (type == MONO_TYPE_GENERICINST) {
374 MonoGenericContext ctx;
377 gclass = decode_klass_ref (module, p, &p);
380 g_assert (gclass->generic_container);
382 memset (&ctx, 0, sizeof (ctx));
383 ctx.class_inst = decode_generic_inst (module, p, &p);
386 type = mono_class_inflate_generic_type (&gclass->byval_arg, &ctx);
387 klass = mono_class_from_mono_type (type);
388 mono_metadata_free_type (type);
389 } else if ((type == MONO_TYPE_VAR) || (type == MONO_TYPE_MVAR)) {
391 MonoGenericContainer *container;
393 int num = decode_value (p, &p);
394 gboolean is_method = decode_value (p, &p);
397 MonoMethod *method_def;
398 g_assert (type == MONO_TYPE_MVAR);
399 method_def = decode_resolve_method_ref (module, p, &p);
403 container = mono_method_get_generic_container (method_def);
405 MonoClass *class_def;
406 g_assert (type == MONO_TYPE_VAR);
407 class_def = decode_klass_ref (module, p, &p);
411 container = class_def->generic_container;
414 g_assert (container);
416 // FIXME: Memory management
417 t = g_new0 (MonoType, 1);
419 t->data.generic_param = mono_generic_container_get_param (container, num);
421 // FIXME: Maybe use types directly to avoid
422 // the overhead of creating MonoClass-es
423 klass = mono_class_from_mono_type (t);
427 g_assert_not_reached ();
430 image = load_image (module, decode_value (p, &p), TRUE);
433 klass = mono_class_get (image, token);
435 } else if (token == MONO_TOKEN_TYPE_DEF) {
437 image = load_image (module, decode_value (p, &p), TRUE);
440 rank = decode_value (p, &p);
441 eklass = decode_klass_ref (module, p, &p);
442 klass = mono_array_class_get (eklass, rank);
444 g_assert_not_reached ();
452 static MonoClassField*
453 decode_field_info (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
455 MonoClass *klass = decode_klass_ref (module, buf, &buf);
462 token = MONO_TOKEN_FIELD_DEF + decode_value (p, &p);
466 return mono_class_get_field (klass, token);
469 /* Stores information returned by decode_method_ref () */
474 gboolean no_aot_trampoline;
478 * decode_method_ref_with_target:
480 * Decode a method reference, storing the image/token into a MethodRef structure.
481 * This avoids loading metadata for the method if the caller does not need it. If the method has
482 * no token, then it is loaded from metadata and ref->method is set to the method instance.
483 * If TARGET is non-NULL, abort decoding if it can be determined that the decoded method couldn't resolve to TARGET, and return FALSE.
486 decode_method_ref_with_target (MonoAotModule *module, MethodRef *ref, MonoMethod *target, guint8 *buf, guint8 **endbuf)
488 guint32 image_index, value;
489 MonoImage *image = NULL;
492 memset (ref, 0, sizeof (MethodRef));
494 value = decode_value (p, &p);
495 image_index = value >> 24;
497 if (image_index == MONO_AOT_METHODREF_NO_AOT_TRAMPOLINE) {
498 ref->no_aot_trampoline = TRUE;
499 value = decode_value (p, &p);
500 image_index = value >> 24;
503 if (image_index < MONO_AOT_METHODREF_MIN || image_index == MONO_AOT_METHODREF_METHODSPEC || image_index == MONO_AOT_METHODREF_GINST) {
504 if (target && target->wrapper_type)
508 if (image_index == MONO_AOT_METHODREF_WRAPPER) {
509 guint32 wrapper_type;
511 wrapper_type = decode_value (p, &p);
513 if (target && target->wrapper_type != wrapper_type)
517 image = mono_defaults.corlib;
519 switch (wrapper_type) {
520 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK: {
521 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
525 mono_class_init (m->klass);
526 ref->method = mono_marshal_get_remoting_invoke_with_check (m);
529 case MONO_WRAPPER_PROXY_ISINST: {
530 MonoClass *klass = decode_klass_ref (module, p, &p);
533 ref->method = mono_marshal_get_proxy_cancast (klass);
536 case MONO_WRAPPER_LDFLD:
537 case MONO_WRAPPER_LDFLDA:
538 case MONO_WRAPPER_STFLD:
539 case MONO_WRAPPER_ISINST: {
540 MonoClass *klass = decode_klass_ref (module, p, &p);
543 if (wrapper_type == MONO_WRAPPER_LDFLD)
544 ref->method = mono_marshal_get_ldfld_wrapper (&klass->byval_arg);
545 else if (wrapper_type == MONO_WRAPPER_LDFLDA)
546 ref->method = mono_marshal_get_ldflda_wrapper (&klass->byval_arg);
547 else if (wrapper_type == MONO_WRAPPER_STFLD)
548 ref->method = mono_marshal_get_stfld_wrapper (&klass->byval_arg);
549 else if (wrapper_type == MONO_WRAPPER_ISINST)
550 ref->method = mono_marshal_get_isinst (klass);
552 g_assert_not_reached ();
555 case MONO_WRAPPER_LDFLD_REMOTE:
556 ref->method = mono_marshal_get_ldfld_remote_wrapper (NULL);
558 case MONO_WRAPPER_STFLD_REMOTE:
559 ref->method = mono_marshal_get_stfld_remote_wrapper (NULL);
561 case MONO_WRAPPER_ALLOC: {
562 int atype = decode_value (p, &p);
564 ref->method = mono_gc_get_managed_allocator_by_type (atype);
567 case MONO_WRAPPER_WRITE_BARRIER:
568 ref->method = mono_gc_get_write_barrier ();
570 case MONO_WRAPPER_STELEMREF:
571 ref->method = mono_marshal_get_stelemref ();
573 case MONO_WRAPPER_SYNCHRONIZED: {
574 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
578 ref->method = mono_marshal_get_synchronized_wrapper (m);
581 case MONO_WRAPPER_UNKNOWN: {
582 MonoMethodDesc *desc;
583 MonoMethod *orig_method;
584 int subtype = decode_value (p, &p);
586 if (subtype == MONO_AOT_WRAPPER_MONO_ENTER)
587 desc = mono_method_desc_new ("Monitor:Enter", FALSE);
588 else if (subtype == MONO_AOT_WRAPPER_MONO_EXIT)
589 desc = mono_method_desc_new ("Monitor:Exit", FALSE);
591 g_assert_not_reached ();
592 orig_method = mono_method_desc_search_in_class (desc, mono_defaults.monitor_class);
593 g_assert (orig_method);
594 mono_method_desc_free (desc);
595 ref->method = mono_monitor_get_fast_path (orig_method);
598 case MONO_WRAPPER_RUNTIME_INVOKE: {
600 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
604 ref->method = mono_marshal_get_runtime_invoke (m, FALSE);
607 case MONO_WRAPPER_MANAGED_TO_MANAGED: {
608 int subtype = decode_value (p, &p);
610 if (subtype == MONO_AOT_WRAPPER_ELEMENT_ADDR) {
611 int rank = decode_value (p, &p);
612 int elem_size = decode_value (p, &p);
614 ref->method = mono_marshal_get_array_address (rank, elem_size);
616 g_assert_not_reached ();
621 g_assert_not_reached ();
623 } else if (image_index == MONO_AOT_METHODREF_WRAPPER_NAME) {
626 /* Can't decode these */
627 g_assert_not_reached ();
628 } else if (image_index == MONO_AOT_METHODREF_METHODSPEC) {
629 image_index = decode_value (p, &p);
630 ref->token = decode_value (p, &p);
632 image = load_image (module, image_index, TRUE);
635 } else if (image_index == MONO_AOT_METHODREF_GINST) {
637 MonoGenericContext ctx;
640 * These methods do not have a token which resolves them, so we
641 * resolve them immediately.
643 klass = decode_klass_ref (module, p, &p);
647 if (target && target->klass != klass)
650 image_index = decode_value (p, &p);
651 ref->token = decode_value (p, &p);
653 image = load_image (module, image_index, TRUE);
657 ref->method = mono_get_method_full (image, ref->token, NULL, NULL);
661 memset (&ctx, 0, sizeof (ctx));
663 if (FALSE && klass->generic_class) {
664 ctx.class_inst = klass->generic_class->context.class_inst;
665 ctx.method_inst = NULL;
667 ref->method = mono_class_inflate_generic_method_full (ref->method, klass, &ctx);
670 memset (&ctx, 0, sizeof (ctx));
672 if (!decode_generic_context (module, &ctx, p, &p))
675 ref->method = mono_class_inflate_generic_method_full (ref->method, klass, &ctx);
676 } else if (image_index == MONO_AOT_METHODREF_ARRAY) {
680 klass = decode_klass_ref (module, p, &p);
683 method_type = decode_value (p, &p);
684 switch (method_type) {
686 ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank);
689 ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank * 2);
692 ref->method = mono_class_get_method_from_name (klass, "Get", -1);
695 ref->method = mono_class_get_method_from_name (klass, "Address", -1);
698 ref->method = mono_class_get_method_from_name (klass, "Set", -1);
701 g_assert_not_reached ();
704 g_assert (image_index < MONO_AOT_METHODREF_MIN);
705 ref->token = MONO_TOKEN_METHOD_DEF | (value & 0xffffff);
707 image = load_image (module, image_index, TRUE);
720 decode_method_ref (MonoAotModule *module, MethodRef *ref, guint8 *buf, guint8 **endbuf)
722 return decode_method_ref_with_target (module, ref, NULL, buf, endbuf);
726 * decode_resolve_method_ref_with_target:
728 * Similar to decode_method_ref, but resolve and return the method itself.
731 decode_resolve_method_ref_with_target (MonoAotModule *module, MonoMethod *target, guint8 *buf, guint8 **endbuf)
736 res = decode_method_ref_with_target (module, &ref, target, buf, endbuf);
743 return mono_get_method (ref.image, ref.token, NULL);
747 decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
749 return decode_resolve_method_ref_with_target (module, NULL, buf, endbuf);
753 create_cache_structure (void)
759 home = g_get_home_dir ();
763 tmp = g_build_filename (home, ".mono", NULL);
764 if (!g_file_test (tmp, G_FILE_TEST_IS_DIR)) {
765 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT creating directory %s", tmp);
769 err = mkdir (tmp, 0777);
772 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed: %s", g_strerror (errno));
778 tmp = g_build_filename (home, ".mono", "aot-cache", NULL);
779 if (!g_file_test (tmp, G_FILE_TEST_IS_DIR)) {
780 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT creating directory %s", tmp);
784 err = mkdir (tmp, 0777);
787 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed: %s", g_strerror (errno));
796 * load_aot_module_from_cache:
798 * Experimental code to AOT compile loaded assemblies on demand.
801 * - Add environment variable MONO_AOT_CACHE_OPTIONS
802 * - Add options for controlling the cache size
803 * - Handle full cache by deleting old assemblies lru style
804 * - Add options for excluding assemblies during development
805 * - Maybe add a threshold after an assembly is AOT compiled
806 * - invoking a new mono process is a security risk
807 * - recompile the AOT module if one of its dependencies changes
810 load_aot_module_from_cache (MonoAssembly *assembly, char **aot_name)
812 char *fname, *cmd, *tmp2, *aot_options;
821 if (assembly->image->dynamic)
824 create_cache_structure ();
826 home = g_get_home_dir ();
828 tmp2 = g_strdup_printf ("%s-%s%s", assembly->image->assembly_name, assembly->image->guid, SHARED_EXT);
829 fname = g_build_filename (home, ".mono", "aot-cache", tmp2, NULL);
833 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT trying to load from cache: '%s'.", fname);
834 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
837 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT not found.");
839 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT precompiling assembly '%s'... ", assembly->image->name);
841 aot_options = g_strdup_printf ("outfile=%s", fname);
843 if (spawn_compiler) {
844 /* FIXME: security */
845 /* FIXME: Has to pass the assembly loading path to the child process */
846 cmd = g_strdup_printf ("mono -O=all --aot=%s %s", aot_options, assembly->image->name);
848 res = g_spawn_command_line_sync (cmd, &out, &err, &exit_status, NULL);
850 #if !defined(HOST_WIN32) && !defined(__ppc__) && !defined(__ppc64__) && !defined(__powerpc__)
852 if (!WIFEXITED (exit_status) && (WEXITSTATUS (exit_status) == 0))
853 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT failed: %s.", err);
855 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT succeeded.");
862 res = mono_compile_assembly (assembly, mono_parse_default_optimizations (NULL), aot_options);
864 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT failed.");
866 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT succeeded.");
870 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
872 g_free (aot_options);
879 find_symbol (MonoDl *module, gpointer *globals, const char *name, gpointer *value)
883 guint16 *table, *entry;
887 /* The first entry points to the hash */
891 table_size = table [0];
894 hash = mono_metadata_str_hash (name) % table_size;
896 entry = &table [hash * 2];
898 /* Search the hash for the index into the globals table */
900 while (entry [0] != 0) {
901 guint32 index = entry [0] - 1;
902 guint32 next = entry [1];
904 //printf ("X: %s %s\n", (char*)globals [index * 2], name);
906 if (!strcmp (globals [index * 2], name)) {
907 global_index = index;
912 entry = &table [next * 2];
918 if (global_index != -1)
919 *value = globals [global_index * 2 + 1];
923 char *err = mono_dl_symbol (module, name, value);
931 load_aot_module (MonoAssembly *assembly, gpointer user_data)
934 MonoAotModule *amodule;
936 gboolean usable = TRUE;
937 char *saved_guid = NULL;
938 char *aot_version = NULL;
939 char *runtime_version, *build_info;
940 char *opt_flags = NULL;
942 gboolean full_aot = FALSE;
943 MonoAotFileInfo *file_info = NULL;
947 gboolean do_load_image = TRUE;
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 #if defined(__native_client__)
1220 /* TODO: Don't 'load_image' on mscorlib due to a */
1221 /* recursive loading problem. This should be */
1222 /* removed if mscorlib is loaded from disk. */
1223 if (strncmp(assembly->aname.name, "mscorlib", 8)) {
1224 do_load_image = TRUE;
1226 do_load_image = FALSE;
1229 if (do_load_image) {
1230 for (i = 0; i < amodule->image_table_len; ++i)
1231 load_image (amodule, i, FALSE);
1234 if (amodule->out_of_date) {
1235 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);
1236 if (mono_aot_only) {
1237 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);
1242 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT loaded AOT Module for %s.\n", assembly->image->name);
1246 * mono_aot_register_globals:
1248 * This is called by the ctor function in AOT images compiled with the
1249 * 'no-dlsym' option.
1252 mono_aot_register_globals (gpointer *globals)
1254 g_assert_not_reached ();
1258 * mono_aot_register_module:
1260 * This should be called by embedding code to register AOT modules statically linked
1261 * into the executable. AOT_INFO should be the value of the
1262 * 'mono_aot_module_<ASSEMBLY_NAME>_info' global symbol from the AOT module.
1265 mono_aot_register_module (gpointer *aot_info)
1273 /* Determine the assembly name */
1274 find_symbol (NULL, globals, "mono_aot_assembly_name", (gpointer*)&aname);
1277 /* This could be called before startup */
1281 if (!static_aot_modules)
1282 static_aot_modules = g_hash_table_new (g_str_hash, g_str_equal);
1284 g_hash_table_insert (static_aot_modules, aname, globals);
1291 mono_aot_init (void)
1293 InitializeCriticalSection (&aot_mutex);
1294 aot_modules = g_hash_table_new (NULL, NULL);
1296 mono_install_assembly_load_hook (load_aot_module, NULL);
1298 if (g_getenv ("MONO_LASTAOT"))
1299 mono_last_aot_method = atoi (g_getenv ("MONO_LASTAOT"));
1300 if (g_getenv ("MONO_AOT_CACHE"))
1301 use_aot_cache = TRUE;
1305 mono_aot_cleanup (void)
1307 if (aot_jit_icall_hash)
1308 g_hash_table_destroy (aot_jit_icall_hash);
1310 g_hash_table_destroy (aot_modules);
1314 decode_cached_class_info (MonoAotModule *module, MonoCachedClassInfo *info, guint8 *buf, guint8 **endbuf)
1320 info->vtable_size = decode_value (buf, &buf);
1321 if (info->vtable_size == -1)
1324 flags = decode_value (buf, &buf);
1325 info->ghcimpl = (flags >> 0) & 0x1;
1326 info->has_finalize = (flags >> 1) & 0x1;
1327 info->has_cctor = (flags >> 2) & 0x1;
1328 info->has_nested_classes = (flags >> 3) & 0x1;
1329 info->blittable = (flags >> 4) & 0x1;
1330 info->has_references = (flags >> 5) & 0x1;
1331 info->has_static_refs = (flags >> 6) & 0x1;
1332 info->no_special_static_fields = (flags >> 7) & 0x1;
1333 info->is_generic_container = (flags >> 8) & 0x1;
1335 if (info->has_cctor) {
1336 res = decode_method_ref (module, &ref, buf, &buf);
1339 info->cctor_token = ref.token;
1341 if (info->has_finalize) {
1342 res = decode_method_ref (module, &ref, buf, &buf);
1345 info->finalize_image = ref.image;
1346 info->finalize_token = ref.token;
1349 info->instance_size = decode_value (buf, &buf);
1350 info->class_size = decode_value (buf, &buf);
1351 info->packing_size = decode_value (buf, &buf);
1352 info->min_align = decode_value (buf, &buf);
1360 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
1363 MonoClass *klass = vtable->klass;
1364 MonoAotModule *amodule = klass->image->aot_module;
1366 MonoCachedClassInfo class_info;
1371 if (MONO_CLASS_IS_INTERFACE (klass) || klass->rank || !amodule)
1374 info = &amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
1377 err = decode_cached_class_info (amodule, &class_info, p, &p);
1381 for (i = 0; i < slot; ++i)
1382 decode_method_ref (amodule, &ref, p, &p);
1384 res = decode_method_ref (amodule, &ref, p, &p);
1387 if (ref.no_aot_trampoline)
1390 if (mono_metadata_token_index (ref.token) == 0)
1393 return mono_aot_get_method_from_token (domain, ref.image, ref.token);
1397 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
1399 MonoAotModule *amodule = klass->image->aot_module;
1403 if (klass->rank || !amodule)
1406 p = (guint8*)&amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
1408 err = decode_cached_class_info (amodule, res, p, &p);
1416 * mono_aot_get_class_from_name:
1418 * Obtains a MonoClass with a given namespace and a given name which is located in IMAGE,
1419 * using a cache stored in the AOT file.
1420 * Stores the resulting class in *KLASS if found, stores NULL otherwise.
1422 * Returns: TRUE if the klass was found/not found in the cache, FALSE if no aot file was
1426 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
1428 MonoAotModule *amodule = image->aot_module;
1429 guint16 *table, *entry;
1432 char full_name_buf [1024];
1434 const char *name2, *name_space2;
1436 guint32 cols [MONO_TYPEDEF_SIZE];
1437 GHashTable *nspace_table;
1439 if (!amodule || !amodule->class_name_table)
1446 /* First look in the cache */
1447 if (!amodule->name_cache)
1448 amodule->name_cache = g_hash_table_new (g_str_hash, g_str_equal);
1449 nspace_table = g_hash_table_lookup (amodule->name_cache, name_space);
1451 *klass = g_hash_table_lookup (nspace_table, name);
1458 table_size = amodule->class_name_table [0];
1459 table = amodule->class_name_table + 1;
1461 if (name_space [0] == '\0')
1462 full_name = g_strdup_printf ("%s", name);
1464 if (strlen (name_space) + strlen (name) < 1000) {
1465 sprintf (full_name_buf, "%s.%s", name_space, name);
1466 full_name = full_name_buf;
1468 full_name = g_strdup_printf ("%s.%s", name_space, name);
1471 hash = mono_metadata_str_hash (full_name) % table_size;
1472 if (full_name != full_name_buf)
1475 entry = &table [hash * 2];
1477 if (entry [0] != 0) {
1478 t = &image->tables [MONO_TABLE_TYPEDEF];
1481 guint32 index = entry [0];
1482 guint32 next = entry [1];
1483 guint32 token = mono_metadata_make_token (MONO_TABLE_TYPEDEF, index);
1485 name_table_accesses ++;
1487 mono_metadata_decode_row (t, index - 1, cols, MONO_TYPEDEF_SIZE);
1489 name2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
1490 name_space2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
1492 if (!strcmp (name, name2) && !strcmp (name_space, name_space2)) {
1494 *klass = mono_class_get (image, token);
1499 nspace_table = g_hash_table_lookup (amodule->name_cache, name_space);
1500 if (!nspace_table) {
1501 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
1502 g_hash_table_insert (amodule->name_cache, (char*)name_space2, nspace_table);
1504 g_hash_table_insert (nspace_table, (char*)name2, *klass);
1511 entry = &table [next * 2];
1524 * decode_mono_eh_frame:
1526 * Decode the EH information emitted by our modified LLVM compiler and construct a
1527 * MonoJitInfo structure from it.
1528 * LOCKING: Acquires the domain lock.
1531 decode_llvm_mono_eh_frame (MonoAotModule *amodule, MonoDomain *domain,
1532 MonoMethod *method, guint8 *code,
1533 MonoJitExceptionInfo *clauses, int num_clauses,
1534 int extra_size, GSList **nesting,
1535 int *this_reg, int *this_offset)
1538 guint8 *fde, *cie, *code_start, *code_end;
1539 int version, fde_count;
1541 int i, j, pos, left, right, offset, offset1, offset2, code_len;
1542 MonoJitExceptionInfo *ei;
1543 guint32 fde_len, ei_len, nested_len, nindex;
1544 gpointer *type_info;
1546 MonoLLVMFDEInfo info;
1548 g_assert (amodule->mono_eh_frame);
1550 p = amodule->mono_eh_frame;
1552 /* p points to data emitted by LLVM in DwarfException::EmitMonoEHFrame () */
1556 g_assert (version == 1);
1558 p = ALIGN_PTR_TO (p, 4);
1560 fde_count = *(guint32*)p;
1564 /* There is +1 entry in the table */
1565 cie = p + ((fde_count + 1) * 8);
1567 /* Binary search in the table to find the entry for code */
1568 offset = code - amodule->mono_eh_frame;
1573 pos = (left + right) / 2;
1575 offset1 = table [(pos * 2)];
1576 if (pos + 1 == fde_count)
1578 offset2 = amodule->code_end - amodule->code;
1580 offset2 = table [(pos + 1) * 2];
1582 if (offset < offset1)
1584 else if (offset >= offset2)
1590 code_start = amodule->mono_eh_frame + table [(pos * 2)];
1591 /* This won't overflow because there is +1 entry in the table */
1592 code_end = amodule->mono_eh_frame + table [(pos * 2) + 2];
1593 code_len = code_end - code_start;
1595 g_assert (code >= code_start && code < code_end);
1597 fde = amodule->mono_eh_frame + table [(pos * 2) + 1];
1598 /* This won't overflow because there is +1 entry in the table */
1599 fde_len = table [(pos * 2) + 2 + 1] - table [(pos * 2) + 1];
1601 mono_unwind_decode_llvm_mono_fde (fde, fde_len, cie, code_start, &info);
1603 ei_len = info.ex_info_len;
1604 type_info = info.type_info;
1605 *this_reg = info.this_reg;
1606 *this_offset = info.this_offset;
1608 /* Count number of nested clauses */
1610 for (i = 0; i < ei_len; ++i) {
1611 gint32 cindex1 = *(gint32*)type_info [i];
1614 for (l = nesting [cindex1]; l; l = l->next) {
1615 gint32 nesting_cindex = GPOINTER_TO_INT (l->data);
1617 for (j = 0; j < ei_len; ++j) {
1618 gint32 cindex2 = *(gint32*)type_info [j];
1620 if (cindex2 == nesting_cindex)
1627 * LLVM might represent one IL region with multiple regions, so have to
1628 * allocate a new JI.
1631 mono_domain_alloc0 (domain, MONO_SIZEOF_JIT_INFO + (sizeof (MonoJitExceptionInfo) * (ei_len + nested_len)) + extra_size);
1633 jinfo->code_size = code_len;
1634 jinfo->used_regs = mono_cache_unwind_info (info.unw_info, info.unw_info_len);
1635 jinfo->method = method;
1636 jinfo->code_start = code;
1637 jinfo->domain_neutral = 0;
1638 /* This signals that used_regs points to a normal cached unwind info */
1639 jinfo->from_aot = 0;
1640 jinfo->num_clauses = ei_len + nested_len;
1642 for (i = 0; i < ei_len; ++i) {
1644 * orig_jinfo contains the original IL exception info saved by the AOT
1645 * compiler, we have to combine that with the information produced by LLVM
1647 /* The type_info entries contain IL clause indexes */
1648 int clause_index = *(gint32*)type_info [i];
1649 MonoJitExceptionInfo *jei = &jinfo->clauses [i];
1650 MonoJitExceptionInfo *orig_jei = &clauses [clause_index];
1652 g_assert (clause_index < num_clauses);
1653 jei->flags = orig_jei->flags;
1654 jei->data.catch_class = orig_jei->data.catch_class;
1656 jei->try_start = ei [i].try_start;
1657 jei->try_end = ei [i].try_end;
1658 jei->handler_start = ei [i].handler_start;
1661 /* See exception_cb () in mini-llvm.c as to why this is needed */
1663 for (i = 0; i < ei_len; ++i) {
1664 gint32 cindex1 = *(gint32*)type_info [i];
1667 for (l = nesting [cindex1]; l; l = l->next) {
1668 gint32 nesting_cindex = GPOINTER_TO_INT (l->data);
1670 for (j = 0; j < ei_len; ++j) {
1671 gint32 cindex2 = *(gint32*)type_info [j];
1673 if (cindex2 == nesting_cindex) {
1675 * The try interval comes from the nested clause, everything else from the
1678 memcpy (&jinfo->clauses [nindex], &jinfo->clauses [j], sizeof (MonoJitExceptionInfo));
1679 jinfo->clauses [nindex].try_start = jinfo->clauses [i].try_start;
1680 jinfo->clauses [nindex].try_end = jinfo->clauses [i].try_end;
1686 g_assert (nindex == ei_len + nested_len);
1692 * LOCKING: Acquires the domain lock.
1695 decode_exception_debug_info (MonoAotModule *amodule, MonoDomain *domain,
1696 MonoMethod *method, guint8* ex_info, guint8 *addr,
1697 guint8 *code, guint32 code_len)
1699 int i, buf_len, num_clauses;
1701 guint used_int_regs, flags;
1702 gboolean has_generic_jit_info, has_dwarf_unwind_info, has_clauses, has_seq_points, has_try_block_holes;
1705 int generic_info_size, try_holes_info_size, num_holes, this_reg, this_offset;
1707 /* Load the method info from the AOT file */
1710 flags = decode_value (p, &p);
1711 has_generic_jit_info = (flags & 1) != 0;
1712 has_dwarf_unwind_info = (flags & 2) != 0;
1713 has_clauses = (flags & 4) != 0;
1714 has_seq_points = (flags & 8) != 0;
1715 from_llvm = (flags & 16) != 0;
1716 has_try_block_holes = (flags & 32) != 0;
1718 if (has_dwarf_unwind_info) {
1721 offset = decode_value (p, &p);
1722 g_assert (offset < (1 << 30));
1723 used_int_regs = offset;
1725 used_int_regs = decode_value (p, &p);
1727 if (has_generic_jit_info)
1728 generic_info_size = sizeof (MonoGenericJitInfo);
1730 generic_info_size = 0;
1732 if (has_try_block_holes) {
1733 num_holes = decode_value (p, &p);
1734 try_holes_info_size = sizeof (MonoTryBlockHoleTableJitInfo) + num_holes * sizeof (MonoTryBlockHoleJitInfo);
1736 num_holes = try_holes_info_size = 0;
1738 /* Exception table */
1740 num_clauses = decode_value (p, &p);
1745 MonoJitExceptionInfo *clauses;
1749 * Part of the info is encoded by the AOT compiler, the rest is in the .eh_frame
1752 clauses = g_new0 (MonoJitExceptionInfo, num_clauses);
1753 nesting = g_new0 (GSList*, num_clauses);
1755 for (i = 0; i < num_clauses; ++i) {
1756 MonoJitExceptionInfo *ei = &clauses [i];
1758 ei->flags = decode_value (p, &p);
1760 if (decode_value (p, &p))
1761 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
1763 /* Read the list of nesting clauses */
1765 int nesting_index = decode_value (p, &p);
1766 if (nesting_index == -1)
1768 nesting [i] = g_slist_prepend (nesting [i], GINT_TO_POINTER (nesting_index));
1772 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);
1773 jinfo->from_llvm = 1;
1776 for (i = 0; i < num_clauses; ++i)
1777 g_slist_free (nesting [i]);
1781 mono_domain_alloc0 (domain, MONO_SIZEOF_JIT_INFO + (sizeof (MonoJitExceptionInfo) * num_clauses) + generic_info_size + try_holes_info_size);
1782 jinfo->num_clauses = num_clauses;
1784 for (i = 0; i < jinfo->num_clauses; ++i) {
1785 MonoJitExceptionInfo *ei = &jinfo->clauses [i];
1787 ei->flags = decode_value (p, &p);
1789 ei->exvar_offset = decode_value (p, &p);
1791 if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER || ei->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
1792 ei->data.filter = code + decode_value (p, &p);
1794 if (decode_value (p, &p))
1795 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
1798 ei->try_start = code + decode_value (p, &p);
1799 ei->try_end = code + decode_value (p, &p);
1800 ei->handler_start = code + decode_value (p, &p);
1803 jinfo->code_size = code_len;
1804 jinfo->used_regs = used_int_regs;
1805 jinfo->method = method;
1806 jinfo->code_start = code;
1807 jinfo->domain_neutral = 0;
1808 jinfo->from_aot = 1;
1811 if (has_generic_jit_info) {
1812 MonoGenericJitInfo *gi;
1814 jinfo->has_generic_jit_info = 1;
1816 gi = mono_jit_info_get_generic_jit_info (jinfo);
1820 gi->has_this = this_reg != -1;
1821 gi->this_reg = this_reg;
1822 gi->this_offset = this_offset;
1824 gi->has_this = decode_value (p, &p);
1825 gi->this_reg = decode_value (p, &p);
1826 gi->this_offset = decode_value (p, &p);
1829 /* This currently contains no data */
1830 gi->generic_sharing_context = g_new0 (MonoGenericSharingContext, 1);
1832 jinfo->method = decode_resolve_method_ref (amodule, p, &p);
1835 if (has_try_block_holes) {
1836 MonoTryBlockHoleTableJitInfo *table;
1838 jinfo->has_try_block_holes = 1;
1840 table = mono_jit_info_get_try_block_hole_table_info (jinfo);
1843 table->num_holes = (guint16)num_holes;
1844 for (i = 0; i < num_holes; ++i) {
1845 MonoTryBlockHoleJitInfo *hole = &table->holes [i];
1846 hole->clause = decode_value (p, &p);
1847 hole->length = decode_value (p, &p);
1848 hole->offset = decode_value (p, &p);
1852 if (has_seq_points) {
1853 MonoSeqPointInfo *seq_points;
1854 int il_offset, native_offset, last_il_offset, last_native_offset, j;
1856 int len = decode_value (p, &p);
1858 seq_points = g_malloc0 (sizeof (MonoSeqPointInfo) + (len - MONO_ZERO_LEN_ARRAY) * sizeof (SeqPoint));
1859 seq_points->len = len;
1860 last_il_offset = last_native_offset = 0;
1861 for (i = 0; i < len; ++i) {
1862 SeqPoint *sp = &seq_points->seq_points [i];
1863 il_offset = last_il_offset + decode_value (p, &p);
1864 native_offset = last_native_offset + decode_value (p, &p);
1866 sp->il_offset = il_offset;
1867 sp->native_offset = native_offset;
1869 sp->next_len = decode_value (p, &p);
1870 sp->next = g_new (int, sp->next_len);
1871 for (j = 0; j < sp->next_len; ++j)
1872 sp->next [j] = decode_value (p, &p);
1874 last_il_offset = il_offset;
1875 last_native_offset = native_offset;
1878 mono_domain_lock (domain);
1879 g_hash_table_insert (domain_jit_info (domain)->seq_points, method, seq_points);
1880 mono_domain_unlock (domain);
1883 /* Load debug info */
1884 buf_len = decode_value (p, &p);
1885 mono_debug_add_aot_method (domain, method, code, p, buf_len);
1887 if (amodule != jinfo->method->klass->image->aot_module) {
1890 ji_to_amodule = g_hash_table_new (NULL, NULL);
1891 g_hash_table_insert (ji_to_amodule, jinfo, amodule);
1899 * mono_aot_get_unwind_info:
1901 * Return a pointer to the DWARF unwind info belonging to JI.
1904 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
1906 MonoAotModule *amodule = ji->method->klass->image->aot_module;
1908 guint8 *code = ji->code_start;
1911 g_assert (ji->from_aot);
1913 if (!(code >= amodule->code && code <= amodule->code_end)) {
1914 /* ji belongs to a different aot module than amodule */
1916 g_assert (ji_to_amodule);
1917 amodule = g_hash_table_lookup (ji_to_amodule, ji);
1919 g_assert (code >= amodule->code && code <= amodule->code_end);
1923 p = amodule->unwind_info + ji->used_regs;
1924 *unwind_info_len = decode_value (p, &p);
1928 static G_GNUC_UNUSED int
1929 compare_ints (const void *a, const void *b)
1931 return *(gint32*)a - *(gint32*)b;
1935 msort_code_offsets_internal (gint32 *array, int lo, int hi, gint32 *scratch)
1937 int mid = (lo + hi) / 2;
1944 for (i = lo; i < hi; ++i)
1945 if (array [(i * 2)] > array [(i * 2) + 2])
1948 /* Already sorted */
1952 msort_code_offsets_internal (array, lo, mid, scratch);
1953 msort_code_offsets_internal (array, mid + 1, hi, scratch);
1955 if (array [mid * 2] < array [(mid + 1) * 2])
1961 for (i = lo; i <= hi; i ++) {
1962 if (t_lo <= mid && ((t_hi > hi) || array [t_lo * 2] < array [t_hi * 2])) {
1963 scratch [(i * 2)] = array [t_lo * 2];
1964 scratch [(i * 2) + 1] = array [(t_lo *2) + 1];
1967 scratch [(i * 2)] = array [t_hi * 2];
1968 scratch [(i * 2) + 1] = array [(t_hi *2) + 1];
1972 for (i = lo; i <= hi; ++i) {
1973 array [(i * 2)] = scratch [i * 2];
1974 array [(i * 2) + 1] = scratch [(i * 2) + 1];
1979 msort_code_offsets (gint32 *array, int len)
1983 scratch = g_new (gint32, len * 2);
1984 msort_code_offsets_internal (array, 0, len - 1, scratch);
1989 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
1991 int pos, left, right, offset, offset1, offset2, code_len;
1992 int method_index, table_len, is_wrapper;
1994 MonoAotModule *amodule = image->aot_module;
1997 guint8 *code, *ex_info, *p;
1999 int nmethods = amodule->info.nmethods;
2000 gint32 *code_offsets;
2006 if (domain != mono_get_root_domain ())
2010 offset = (guint8*)addr - amodule->code;
2012 /* Compute a sorted table mapping code offsets to method indexes. */
2013 if (!amodule->sorted_code_offsets) {
2015 code_offsets = g_new0 (gint32, nmethods * 2);
2017 for (i = 0; i < nmethods; ++i) {
2018 /* Skip the -1 entries to speed up sorting */
2019 if (amodule->code_offsets [i] == 0xffffffff)
2021 code_offsets [(offsets_len * 2)] = amodule->code_offsets [i];
2022 code_offsets [(offsets_len *2) + 1] = i;
2025 /* Use a merge sort as this is mostly sorted */
2026 msort_code_offsets (code_offsets, offsets_len);
2027 //qsort (code_offsets, offsets_len, sizeof (gint32) * 2, compare_ints);
2028 for (i = 0; i < offsets_len -1; ++i)
2029 g_assert (code_offsets [(i * 2)] <= code_offsets [(i + 1) * 2]);
2031 if (InterlockedCompareExchangePointer ((gpointer*)&amodule->sorted_code_offsets, code_offsets, NULL) != NULL)
2032 /* Somebody got in before us */
2033 g_free (code_offsets);
2034 amodule->sorted_code_offsets_len = offsets_len;
2037 code_offsets = amodule->sorted_code_offsets;
2038 offsets_len = amodule->sorted_code_offsets_len;
2040 /* Binary search in the sorted_code_offsets table */
2042 right = offsets_len;
2044 pos = (left + right) / 2;
2046 offset1 = code_offsets [(pos * 2)];
2047 if (pos + 1 == offsets_len)
2048 offset2 = amodule->code_end - amodule->code;
2050 offset2 = code_offsets [(pos + 1) * 2];
2052 if (offset < offset1)
2054 else if (offset >= offset2)
2060 g_assert (offset >= code_offsets [(pos * 2)]);
2061 if (pos + 1 < offsets_len)
2062 g_assert (offset < code_offsets [((pos + 1) * 2)]);
2063 method_index = code_offsets [(pos * 2) + 1];
2065 code = &amodule->code [amodule->code_offsets [method_index]];
2066 ex_info = &amodule->blob [mono_aot_get_offset (amodule->ex_info_offsets, method_index)];
2068 if (pos == offsets_len - 1)
2069 code_len = amodule->code_end - code;
2071 code_len = code_offsets [(pos + 1) * 2] - code_offsets [pos * 2];
2073 g_assert ((guint8*)code <= (guint8*)addr && (guint8*)addr < (guint8*)code + code_len);
2075 /* Might be a wrapper/extra method */
2076 if (amodule->extra_methods) {
2078 method = g_hash_table_lookup (amodule->extra_methods, GUINT_TO_POINTER (method_index));
2085 if (method_index >= image->tables [MONO_TABLE_METHOD].rows) {
2087 * This is hit for extra methods which are called directly, so they are
2088 * not in amodule->extra_methods.
2090 table_len = amodule->extra_method_info_offsets [0];
2091 table = amodule->extra_method_info_offsets + 1;
2098 pos = ((left + right) / 2);
2100 g_assert (pos < table_len);
2102 if (table [pos * 2] < method_index)
2104 else if (table [pos * 2] > method_index)
2110 p = amodule->blob + table [(pos * 2) + 1];
2111 is_wrapper = decode_value (p, &p);
2112 g_assert (!is_wrapper);
2113 method = decode_resolve_method_ref (amodule, p, &p);
2116 token = mono_metadata_make_token (MONO_TABLE_METHOD, method_index + 1);
2117 method = mono_get_method (image, token, NULL);
2124 //printf ("F: %s\n", mono_method_full_name (method, TRUE));
2126 jinfo = decode_exception_debug_info (amodule, domain, method, ex_info, addr, code, code_len);
2128 g_assert ((guint8*)addr >= (guint8*)jinfo->code_start);
2129 g_assert ((guint8*)addr < (guint8*)jinfo->code_start + jinfo->code_size);
2131 /* Add it to the normal JitInfo tables */
2132 mono_jit_info_table_add (domain, jinfo);
2138 decode_patch (MonoAotModule *aot_module, MonoMemPool *mp, MonoJumpInfo *ji, guint8 *buf, guint8 **endbuf)
2146 case MONO_PATCH_INFO_METHOD:
2147 case MONO_PATCH_INFO_METHOD_JUMP:
2148 case MONO_PATCH_INFO_ICALL_ADDR:
2149 case MONO_PATCH_INFO_METHOD_RGCTX: {
2153 res = decode_method_ref (aot_module, &ref, p, &p);
2157 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)) {
2158 ji->data.target = mono_create_ftnptr (mono_domain_get (), mono_create_jit_trampoline_from_token (ref.image, ref.token));
2159 ji->type = MONO_PATCH_INFO_ABS;
2163 ji->data.method = ref.method;
2165 ji->data.method = mono_get_method (ref.image, ref.token, NULL);
2166 g_assert (ji->data.method);
2167 mono_class_init (ji->data.method->klass);
2171 case MONO_PATCH_INFO_INTERNAL_METHOD:
2172 case MONO_PATCH_INFO_JIT_ICALL_ADDR: {
2173 guint32 len = decode_value (p, &p);
2175 ji->data.name = (char*)p;
2179 case MONO_PATCH_INFO_METHODCONST:
2181 ji->data.method = decode_resolve_method_ref (aot_module, p, &p);
2182 if (!ji->data.method)
2185 case MONO_PATCH_INFO_VTABLE:
2186 case MONO_PATCH_INFO_CLASS:
2187 case MONO_PATCH_INFO_IID:
2188 case MONO_PATCH_INFO_ADJUSTED_IID:
2190 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2191 if (!ji->data.klass)
2194 case MONO_PATCH_INFO_CLASS_INIT:
2195 case MONO_PATCH_INFO_DELEGATE_TRAMPOLINE:
2196 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2197 if (!ji->data.klass)
2200 case MONO_PATCH_INFO_IMAGE:
2201 ji->data.image = load_image (aot_module, decode_value (p, &p), TRUE);
2202 if (!ji->data.image)
2205 case MONO_PATCH_INFO_FIELD:
2206 case MONO_PATCH_INFO_SFLDA:
2208 ji->data.field = decode_field_info (aot_module, p, &p);
2209 if (!ji->data.field)
2212 case MONO_PATCH_INFO_SWITCH:
2213 ji->data.table = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoBBTable));
2214 ji->data.table->table_size = decode_value (p, &p);
2215 table = mono_domain_alloc (mono_domain_get (), sizeof (gpointer) * ji->data.table->table_size);
2216 ji->data.table->table = (MonoBasicBlock**)table;
2217 for (i = 0; i < ji->data.table->table_size; i++)
2218 table [i] = (gpointer)(gssize)decode_value (p, &p);
2220 case MONO_PATCH_INFO_R4: {
2223 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (float));
2224 val = decode_value (p, &p);
2225 *(float*)ji->data.target = *(float*)&val;
2228 case MONO_PATCH_INFO_R8: {
2232 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (double));
2234 val [0] = decode_value (p, &p);
2235 val [1] = decode_value (p, &p);
2236 v = ((guint64)val [1] << 32) | ((guint64)val [0]);
2237 *(double*)ji->data.target = *(double*)&v;
2240 case MONO_PATCH_INFO_LDSTR:
2241 image = load_image (aot_module, decode_value (p, &p), TRUE);
2244 ji->data.token = mono_jump_info_token_new (mp, image, MONO_TOKEN_STRING + decode_value (p, &p));
2246 case MONO_PATCH_INFO_RVA:
2247 case MONO_PATCH_INFO_DECLSEC:
2248 case MONO_PATCH_INFO_LDTOKEN:
2249 case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
2251 image = load_image (aot_module, decode_value (p, &p), TRUE);
2254 ji->data.token = mono_jump_info_token_new (mp, image, decode_value (p, &p));
2256 ji->data.token->has_context = decode_value (p, &p);
2257 if (ji->data.token->has_context) {
2258 gboolean res = decode_generic_context (aot_module, &ji->data.token->context, p, &p);
2263 case MONO_PATCH_INFO_EXC_NAME:
2264 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2265 if (!ji->data.klass)
2267 ji->data.name = ji->data.klass->name;
2269 case MONO_PATCH_INFO_METHOD_REL:
2270 ji->data.offset = decode_value (p, &p);
2272 case MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG:
2273 case MONO_PATCH_INFO_GENERIC_CLASS_INIT:
2274 case MONO_PATCH_INFO_MONITOR_ENTER:
2275 case MONO_PATCH_INFO_MONITOR_EXIT:
2276 case MONO_PATCH_INFO_GC_CARD_TABLE_ADDR:
2278 case MONO_PATCH_INFO_RGCTX_FETCH: {
2280 MonoJumpInfoRgctxEntry *entry;
2282 entry = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
2283 entry->method = decode_resolve_method_ref (aot_module, p, &p);
2284 entry->in_mrgctx = decode_value (p, &p);
2285 entry->info_type = decode_value (p, &p);
2286 entry->data = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
2287 entry->data->type = decode_value (p, &p);
2289 res = decode_patch (aot_module, mp, entry->data, p, &p);
2292 ji->data.rgctx_entry = entry;
2295 case MONO_PATCH_INFO_SEQ_POINT_INFO:
2297 case MONO_PATCH_INFO_LLVM_IMT_TRAMPOLINE: {
2298 MonoJumpInfoImtTramp *imt_tramp = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoImtTramp));
2300 imt_tramp->method = decode_resolve_method_ref (aot_module, p, &p);
2301 imt_tramp->vt_offset = decode_value (p, &p);
2303 ji->data.imt_tramp = imt_tramp;
2307 g_warning ("unhandled type %d", ji->type);
2308 g_assert_not_reached ();
2319 static MonoJumpInfo*
2320 load_patch_info (MonoAotModule *aot_module, MonoMemPool *mp, int n_patches,
2321 guint32 **got_slots,
2322 guint8 *buf, guint8 **endbuf)
2324 MonoJumpInfo *patches;
2330 patches = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo) * n_patches);
2332 *got_slots = g_malloc (sizeof (guint32) * n_patches);
2334 for (pindex = 0; pindex < n_patches; ++pindex) {
2335 MonoJumpInfo *ji = &patches [pindex];
2340 got_offset = decode_value (p, &p);
2342 if (aot_module->got [got_offset]) {
2343 /* Already loaded */
2344 //printf ("HIT!\n");
2346 shared_p = aot_module->blob + mono_aot_get_offset (aot_module->got_info_offsets, got_offset);
2348 ji->type = decode_value (shared_p, &shared_p);
2350 res = decode_patch (aot_module, mp, ji, shared_p, &shared_p);
2355 (*got_slots) [pindex] = got_offset;
2362 g_free (*got_slots);
2369 register_jump_target_got_slot (MonoDomain *domain, MonoMethod *method, gpointer *got_slot)
2372 * Jump addresses cannot be patched by the trampoline code since it
2373 * does not have access to the caller's address. Instead, we collect
2374 * the addresses of the GOT slots pointing to a method, and patch
2375 * them after the method has been compiled.
2377 MonoJitDomainInfo *info = domain_jit_info (domain);
2380 mono_domain_lock (domain);
2381 if (!info->jump_target_got_slot_hash)
2382 info->jump_target_got_slot_hash = g_hash_table_new (NULL, NULL);
2383 list = g_hash_table_lookup (info->jump_target_got_slot_hash, method);
2384 list = g_slist_prepend (list, got_slot);
2385 g_hash_table_insert (info->jump_target_got_slot_hash, method, list);
2386 mono_domain_unlock (domain);
2392 * Load the method identified by METHOD_INDEX from the AOT image. Return a
2393 * pointer to the native code of the method, or NULL if not found.
2394 * METHOD might not be set if the caller only has the image/token info.
2397 load_method (MonoDomain *domain, MonoAotModule *amodule, MonoImage *image, MonoMethod *method, guint32 token, int method_index)
2400 gboolean from_plt = method == NULL;
2402 int i, pindex, n_patches, used_strings;
2403 gboolean keep_patches = TRUE;
2405 MonoJitInfo *jinfo = NULL;
2406 guint8 *code, *info;
2408 if (mono_profiler_get_events () & MONO_PROFILE_ENTER_LEAVE)
2411 if ((domain != mono_get_root_domain ()) && (!(amodule->info.opts & MONO_OPT_SHARED)))
2412 /* Non shared AOT code can't be used in other appdomains */
2415 if (amodule->out_of_date)
2418 if (amodule->code_offsets [method_index] == 0xffffffff) {
2419 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
2423 method = mono_get_method (image, token, NULL);
2424 full_name = mono_method_full_name (method, TRUE);
2425 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.\n", full_name);
2431 code = &amodule->code [amodule->code_offsets [method_index]];
2433 info = &amodule->blob [mono_aot_get_offset (amodule->method_info_offsets, method_index)];
2436 if (!amodule->methods_loaded)
2437 amodule->methods_loaded = g_new0 (guint32, amodule->info.nmethods + 1);
2440 if ((amodule->methods_loaded [method_index / 32] >> (method_index % 32)) & 0x1)
2443 if (mono_last_aot_method != -1) {
2444 if (mono_jit_stats.methods_aot >= mono_last_aot_method)
2446 else if (mono_jit_stats.methods_aot == mono_last_aot_method - 1) {
2448 method = mono_get_method (image, token, NULL);
2450 char *name = mono_method_full_name (method, TRUE);
2451 printf ("LAST AOT METHOD: %s.\n", name);
2454 printf ("LAST AOT METHOD: %p %d\n", code, method_index);
2462 klass = method->klass;
2463 decode_klass_ref (amodule, p, &p);
2465 klass = decode_klass_ref (amodule, p, &p);
2468 if (amodule->info.opts & MONO_OPT_SHARED)
2469 used_strings = decode_value (p, &p);
2473 for (i = 0; i < used_strings; i++) {
2474 guint token = decode_value (p, &p);
2475 mono_ldstr (mono_get_root_domain (), image, mono_metadata_token_index (token));
2478 if (amodule->info.opts & MONO_OPT_SHARED)
2479 keep_patches = FALSE;
2481 n_patches = decode_value (p, &p);
2483 keep_patches = FALSE;
2486 MonoJumpInfo *patches;
2492 mp = mono_mempool_new ();
2494 patches = load_patch_info (amodule, mp, n_patches, &got_slots, p, &p);
2495 if (patches == NULL)
2498 for (pindex = 0; pindex < n_patches; ++pindex) {
2499 MonoJumpInfo *ji = &patches [pindex];
2501 if (!amodule->got [got_slots [pindex]]) {
2502 amodule->got [got_slots [pindex]] = mono_resolve_patch_target (method, domain, code, ji, TRUE);
2503 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
2504 amodule->got [got_slots [pindex]] = mono_create_ftnptr (domain, amodule->got [got_slots [pindex]]);
2505 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
2506 register_jump_target_got_slot (domain, ji->data.method, &(amodule->got [got_slots [pindex]]));
2508 ji->type = MONO_PATCH_INFO_NONE;
2514 mono_mempool_destroy (mp);
2517 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
2521 method = mono_get_method (image, token, NULL);
2523 full_name = mono_method_full_name (method, TRUE);
2526 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
2528 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);
2534 mono_jit_stats.methods_aot++;
2536 amodule->methods_loaded [method_index / 32] |= 1 << (method_index % 32);
2540 if (method && method->wrapper_type)
2541 g_hash_table_insert (amodule->method_to_code, method, code);
2545 if (mono_profiler_get_events () & MONO_PROFILE_JIT_COMPILATION) {
2549 method = mono_get_method (image, token, NULL);
2552 mono_profiler_method_jit (method);
2553 jinfo = mono_jit_info_table_find (domain, (char*)code);
2555 mono_profiler_method_end_jit (method, jinfo, MONO_PROFILE_OK);
2558 if (from_plt && klass && !klass->generic_container)
2559 mono_runtime_class_init (mono_class_vtable (domain, klass));
2564 /* FIXME: The space in domain->mp is wasted */
2565 if (amodule->info.opts & MONO_OPT_SHARED)
2566 /* No need to cache patches */
2567 mono_mempool_destroy (mp);
2576 find_extra_method_in_amodule (MonoAotModule *amodule, MonoMethod *method, const char *name)
2578 guint32 table_size, entry_size, hash;
2579 guint32 *table, *entry;
2581 static guint32 n_extra_decodes;
2586 table_size = amodule->extra_method_table [0];
2587 table = amodule->extra_method_table + 1;
2590 hash = mono_aot_method_hash (method) % table_size;
2592 entry = &table [hash * entry_size];
2599 guint32 key = entry [0];
2600 guint32 value = entry [1];
2601 guint32 next = entry [entry_size - 1];
2604 int is_wrapper_name;
2606 p = amodule->blob + key;
2607 is_wrapper_name = decode_value (p, &p);
2608 if (is_wrapper_name) {
2609 int wrapper_type = decode_value (p, &p);
2610 if (wrapper_type == method->wrapper_type && !strcmp (name, (char*)p)) {
2618 if (!amodule->method_ref_to_method)
2619 amodule->method_ref_to_method = g_hash_table_new (NULL, NULL);
2620 m = g_hash_table_lookup (amodule->method_ref_to_method, p);
2623 m = decode_resolve_method_ref_with_target (amodule, method, p, &p);
2626 g_hash_table_insert (amodule->method_ref_to_method, orig_p, m);
2635 /* Special case: wrappers of shared generic methods */
2636 if (m && method->wrapper_type && m->wrapper_type == m->wrapper_type &&
2637 method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
2638 MonoMethod *w1 = mono_marshal_method_from_wrapper (method);
2639 MonoMethod *w2 = mono_marshal_method_from_wrapper (m);
2641 if (w1->is_inflated && ((MonoMethodInflated *)w1)->declaring == w2) {
2647 /* Methods decoded needlessly */
2649 //printf ("%d %s %s %p\n", n_extra_decodes, mono_method_full_name (method, TRUE), mono_method_full_name (m, TRUE), orig_p);
2655 entry = &table [next * entry_size];
2664 add_module_cb (gpointer key, gpointer value, gpointer user_data)
2666 g_ptr_array_add ((GPtrArray*)user_data, value);
2670 * find_extra_method:
2672 * Try finding METHOD in the extra_method table in all AOT images.
2673 * Return its method index, or 0xffffff if not found. Set OUT_AMODULE to the AOT
2674 * module where the method was found.
2677 find_extra_method (MonoMethod *method, MonoAotModule **out_amodule)
2684 if (method->wrapper_type)
2685 name = mono_aot_wrapper_name (method);
2687 /* Try the method's module first */
2688 *out_amodule = method->klass->image->aot_module;
2689 index = find_extra_method_in_amodule (method->klass->image->aot_module, method, name);
2690 if (index != 0xffffff) {
2696 * Try all other modules.
2697 * This is needed because generic instances klass->image points to the image
2698 * containing the generic definition, but the native code is generated to the
2699 * AOT image which contains the reference.
2702 /* Make a copy to avoid doing the search inside the aot lock */
2703 modules = g_ptr_array_new ();
2705 g_hash_table_foreach (aot_modules, add_module_cb, modules);
2709 for (i = 0; i < modules->len; ++i) {
2710 MonoAotModule *amodule = g_ptr_array_index (modules, i);
2712 if (amodule != method->klass->image->aot_module)
2713 index = find_extra_method_in_amodule (amodule, method, name);
2714 if (index != 0xffffff) {
2715 *out_amodule = amodule;
2720 g_ptr_array_free (modules, TRUE);
2727 * mono_aot_get_method:
2729 * Return a pointer to the AOTed native code for METHOD if it can be found,
2731 * On platforms with function pointers, this doesn't return a function pointer.
2734 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
2736 MonoClass *klass = method->klass;
2737 guint32 method_index;
2738 MonoAotModule *amodule = klass->image->aot_module;
2744 if (amodule->out_of_date)
2747 if ((method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
2748 (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
2749 (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
2750 (method->flags & METHOD_ATTRIBUTE_ABSTRACT))
2754 * Use the original method instead of its invoke-with-check wrapper.
2755 * This is not a problem when using full-aot, since it doesn't support
2758 if (mono_aot_only && method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)
2759 return mono_aot_get_method (domain, mono_marshal_method_from_wrapper (method));
2761 g_assert (klass->inited);
2763 /* Find method index */
2764 if (method->is_inflated && mono_method_is_generic_sharable_impl_full (method, FALSE, FALSE)) {
2766 * For generic methods, we store the fully shared instance in place of the
2769 method = mono_method_get_declaring_generic_method (method);
2770 method_index = mono_metadata_token_index (method->token) - 1;
2771 } else if (method->is_inflated || !method->token) {
2772 /* This hash table is used to avoid the slower search in the extra_method_table in the AOT image */
2774 code = g_hash_table_lookup (amodule->method_to_code, method);
2779 method_index = find_extra_method (method, &amodule);
2781 * Special case the ICollection<T> wrappers for arrays, as they cannot
2782 * be statically enumerated, and each wrapper ends up calling the same
2785 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED && method->klass->rank && strstr (method->name, "System.Collections.Generic")) {
2786 MonoMethod *m = mono_aot_get_array_helper_from_wrapper (method);
2788 code = mono_aot_get_method (domain, m);
2790 if (mono_method_needs_static_rgctx_invoke (m, FALSE)) {
2791 code = mono_create_static_rgctx_trampoline (m, mono_create_ftnptr (domain, code));
2792 /* The call above returns an ftnptr */
2793 code = mono_get_addr_from_ftnptr (code);
2801 * Special case Array.GetGenericValueImpl which is a generic icall.
2802 * Generic sharing currently can't handle it, but the icall returns data using
2803 * an out parameter, so the managed-to-native wrappers can share the same code.
2805 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass == mono_defaults.array_class && !strcmp (method->name, "GetGenericValueImpl")) {
2807 MonoGenericContext ctx;
2808 MonoType *args [16];
2810 if (mono_method_signature (method)->params [1]->type == MONO_TYPE_OBJECT)
2811 /* Avoid recursion */
2814 m = mono_class_get_method_from_name (mono_defaults.array_class, "GetGenericValueImpl", 2);
2817 memset (&ctx, 0, sizeof (ctx));
2818 args [0] = &mono_defaults.object_class->byval_arg;
2819 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
2821 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method (m, &ctx), TRUE, TRUE);
2824 * Get the code for the <object> instantiation which should be emitted into
2825 * the mscorlib aot image by the AOT compiler.
2827 code = mono_aot_get_method (domain, m);
2832 /* Same for CompareExchange<T> */
2833 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")) {
2835 MonoGenericContext ctx;
2836 MonoType *args [16];
2837 gpointer iter = NULL;
2839 while ((m = mono_class_get_methods (method->klass, &iter))) {
2840 if (mono_method_signature (m)->generic_param_count && !strcmp (m->name, "CompareExchange"))
2845 memset (&ctx, 0, sizeof (ctx));
2846 args [0] = &mono_defaults.object_class->byval_arg;
2847 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
2849 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method (m, &ctx), TRUE, TRUE);
2851 /* Avoid recursion */
2856 * Get the code for the <object> instantiation which should be emitted into
2857 * the mscorlib aot image by the AOT compiler.
2859 code = mono_aot_get_method (domain, m);
2864 if (method_index == 0xffffff && method->is_inflated && mono_method_is_generic_sharable_impl_full (method, FALSE, TRUE)) {
2865 /* Partial sharing */
2866 method_index = find_extra_method (mini_get_shared_method (method), &amodule);
2869 if (method_index == 0xffffff) {
2870 if (mono_aot_only && mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
2873 full_name = mono_method_full_name (method, TRUE);
2874 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.\n", full_name);
2880 if (method_index == 0xffffff)
2883 /* Needed by find_jit_info */
2885 if (!amodule->extra_methods)
2886 amodule->extra_methods = g_hash_table_new (NULL, NULL);
2887 g_hash_table_insert (amodule->extra_methods, GUINT_TO_POINTER (method_index), method);
2891 method_index = mono_metadata_token_index (method->token) - 1;
2894 return load_method (domain, amodule, klass->image, method, method->token, method_index);
2898 * Same as mono_aot_get_method, but we try to avoid loading any metadata from the
2902 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
2904 MonoAotModule *aot_module = image->aot_module;
2910 method_index = mono_metadata_token_index (token) - 1;
2912 return load_method (domain, aot_module, image, NULL, token, method_index);
2918 } IsGotEntryUserData;
2921 check_is_got_entry (gpointer key, gpointer value, gpointer user_data)
2923 IsGotEntryUserData *data = (IsGotEntryUserData*)user_data;
2924 MonoAotModule *aot_module = (MonoAotModule*)value;
2926 if (aot_module->got && (data->addr >= (guint8*)(aot_module->got)) && (data->addr < (guint8*)(aot_module->got + aot_module->info.got_size)))
2931 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
2933 IsGotEntryUserData user_data;
2938 user_data.addr = addr;
2939 user_data.res = FALSE;
2941 g_hash_table_foreach (aot_modules, check_is_got_entry, &user_data);
2944 return user_data.res;
2949 MonoAotModule *module;
2950 } FindAotModuleUserData;
2953 find_aot_module_cb (gpointer key, gpointer value, gpointer user_data)
2955 FindAotModuleUserData *data = (FindAotModuleUserData*)user_data;
2956 MonoAotModule *aot_module = (MonoAotModule*)value;
2958 if ((data->addr >= (guint8*)(aot_module->code)) && (data->addr < (guint8*)(aot_module->code_end)))
2959 data->module = aot_module;
2962 static inline MonoAotModule*
2963 find_aot_module (guint8 *code)
2965 FindAotModuleUserData user_data;
2970 /* Reading these need no locking */
2971 if (((gsize)code < aot_code_low_addr) || ((gsize)code > aot_code_high_addr))
2974 user_data.addr = code;
2975 user_data.module = NULL;
2978 g_hash_table_foreach (aot_modules, find_aot_module_cb, &user_data);
2981 return user_data.module;
2985 mono_aot_patch_plt_entry (guint8 *code, gpointer *got, mgreg_t *regs, guint8 *addr)
2988 * Since AOT code is only used in the root domain,
2989 * mono_domain_get () != mono_get_root_domain () means the calling method
2990 * is AppDomain:InvokeInDomain, so this is the same check as in
2991 * mono_method_same_domain () but without loading the metadata for the method.
2993 if (mono_domain_get () == mono_get_root_domain ())
2994 mono_arch_patch_plt_entry (code, got, regs, addr);
2998 * mono_aot_plt_resolve:
3000 * This function is called by the entries in the PLT to resolve the actual method that
3001 * needs to be called. It returns a trampoline to the method and patches the PLT entry.
3002 * Returns NULL if the something cannot be loaded.
3005 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
3007 #ifdef MONO_ARCH_AOT_SUPPORTED
3008 guint8 *p, *target, *plt_entry;
3010 MonoAotModule *module = (MonoAotModule*)aot_module;
3011 gboolean res, no_ftnptr = FALSE;
3014 //printf ("DYN: %p %d\n", aot_module, plt_info_offset);
3016 p = &module->blob [plt_info_offset];
3018 ji.type = decode_value (p, &p);
3020 mp = mono_mempool_new_size (512);
3021 res = decode_patch (module, mp, &ji, p, &p);
3024 mono_mempool_destroy (mp);
3029 * Avoid calling resolve_patch_target in the full-aot case if possible, since
3030 * it would create a trampoline, and we don't need that.
3031 * We could do this only if the method does not need the special handling
3032 * in mono_magic_trampoline ().
3034 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) &&
3035 !mono_method_needs_static_rgctx_invoke (ji.data.method, FALSE)) {
3036 target = mono_jit_compile_method (ji.data.method);
3039 target = mono_resolve_patch_target (NULL, mono_domain_get (), NULL, &ji, TRUE);
3043 * The trampoline expects us to return a function descriptor on platforms which use
3044 * it, but resolve_patch_target returns a direct function pointer for some type of
3045 * patches, so have to translate between the two.
3046 * FIXME: Clean this up, but how ?
3048 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) {
3049 /* These should already have a function descriptor */
3050 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3051 /* Our function descriptors have a 0 environment, gcc created ones don't */
3052 if (ji.type != MONO_PATCH_INFO_INTERNAL_METHOD && ji.type != MONO_PATCH_INFO_JIT_ICALL_ADDR && ji.type != MONO_PATCH_INFO_ICALL_ADDR)
3053 g_assert (((gpointer*)target) [2] == 0);
3056 } else if (!no_ftnptr) {
3057 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3058 g_assert (((gpointer*)target) [2] != 0);
3060 target = mono_create_ftnptr (mono_domain_get (), target);
3063 mono_mempool_destroy (mp);
3065 /* Patch the PLT entry with target which might be the actual method not a trampoline */
3066 plt_entry = mono_aot_get_plt_entry (code);
3067 g_assert (plt_entry);
3068 mono_aot_patch_plt_entry (plt_entry, module->got, NULL, target);
3072 g_assert_not_reached ();
3080 * Initialize the PLT table of the AOT module. Called lazily when the first AOT
3081 * method in the module is loaded to avoid committing memory by writing to it.
3082 * LOCKING: Assumes the AOT lock is held.
3085 init_plt (MonoAotModule *amodule)
3090 if (amodule->plt_inited)
3093 tramp = mono_create_specific_trampoline (amodule, MONO_TRAMPOLINE_AOT_PLT, mono_get_root_domain (), NULL);
3096 * Initialize the PLT entries in the GOT to point to the default targets.
3099 tramp = mono_create_ftnptr (mono_domain_get (), tramp);
3100 for (i = 1; i < amodule->info.plt_size; ++i)
3101 /* All the default entries point to the AOT trampoline */
3102 ((gpointer*)amodule->got)[amodule->info.plt_got_offset_base + i] = tramp;
3104 amodule->plt_inited = TRUE;
3108 * mono_aot_get_plt_entry:
3110 * Return the address of the PLT entry called by the code at CODE if exists.
3113 mono_aot_get_plt_entry (guint8 *code)
3115 MonoAotModule *aot_module = find_aot_module (code);
3120 #ifdef MONO_ARCH_AOT_SUPPORTED
3122 guint8 *target = mono_arch_get_call_target (code);
3124 if ((target >= (guint8*)(aot_module->plt)) && (target < (guint8*)(aot_module->plt_end)))
3128 g_assert_not_reached ();
3135 * mono_aot_get_plt_info_offset:
3137 * Return the PLT info offset belonging to the plt entry called by CODE.
3140 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
3142 guint8 *plt_entry = mono_aot_get_plt_entry (code);
3144 g_assert (plt_entry);
3146 /* The offset is embedded inside the code after the plt entry */
3147 #ifdef MONO_ARCH_AOT_SUPPORTED
3148 return mono_arch_get_plt_info_offset (plt_entry, regs, code);
3150 g_assert_not_reached ();
3156 mono_create_ftnptr_malloc (guint8 *code)
3158 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3159 MonoPPCFunctionDescriptor *ftnptr = g_malloc0 (sizeof (MonoPPCFunctionDescriptor));
3161 ftnptr->code = code;
3172 * mono_aot_register_jit_icall:
3174 * Register a JIT icall which is called by trampolines in full-aot mode. This should
3175 * be called from mono_arch_init () during startup.
3178 mono_aot_register_jit_icall (const char *name, gpointer addr)
3180 /* No need for locking */
3181 if (!aot_jit_icall_hash)
3182 aot_jit_icall_hash = g_hash_table_new (g_str_hash, g_str_equal);
3183 g_hash_table_insert (aot_jit_icall_hash, (char*)name, addr);
3189 * Load the function named NAME from the aot image.
3192 load_function (MonoAotModule *amodule, const char *name)
3196 int n_patches, pindex;
3202 symbol = g_strdup_printf ("%s", name);
3203 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&code);
3206 g_error ("Symbol '%s' not found in AOT file '%s'.\n", name, amodule->aot_name);
3208 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT FOUND function '%s' in AOT file '%s'.\n", name, amodule->aot_name);
3212 symbol = g_strdup_printf ("%s_p", name);
3213 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&p);
3216 /* Nothing to patch */
3219 p = amodule->blob + *(guint32*)p;
3221 /* Similar to mono_aot_load_method () */
3223 n_patches = decode_value (p, &p);
3226 MonoJumpInfo *patches;
3229 mp = mono_mempool_new ();
3231 patches = load_patch_info (amodule, mp, n_patches, &got_slots, p, &p);
3234 for (pindex = 0; pindex < n_patches; ++pindex) {
3235 MonoJumpInfo *ji = &patches [pindex];
3238 if (amodule->got [got_slots [pindex]])
3242 * When this code is executed, the runtime may not be initalized yet, so
3243 * resolve the patch info by hand.
3245 if (ji->type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
3246 if (!strcmp (ji->data.name, "mono_get_lmf_addr")) {
3247 target = mono_get_lmf_addr;
3248 } else if (!strcmp (ji->data.name, "mono_thread_force_interruption_checkpoint")) {
3249 target = mono_thread_force_interruption_checkpoint;
3250 } else if (!strcmp (ji->data.name, "mono_exception_from_token")) {
3251 target = mono_exception_from_token;
3252 } else if (!strcmp (ji->data.name, "mono_throw_exception")) {
3253 target = mono_get_throw_exception ();
3254 } else if (strstr (ji->data.name, "trampoline_func_") == ji->data.name) {
3255 int tramp_type2 = atoi (ji->data.name + strlen ("trampoline_func_"));
3256 target = (gpointer)mono_get_trampoline_func (tramp_type2);
3257 } else if (strstr (ji->data.name, "specific_trampoline_lazy_fetch_") == ji->data.name) {
3258 /* atoll is needed because the the offset is unsigned */
3262 res = sscanf (ji->data.name, "specific_trampoline_lazy_fetch_%u", &slot);
3263 g_assert (res == 1);
3264 target = mono_create_specific_trampoline (GUINT_TO_POINTER (slot), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, mono_get_root_domain (), NULL);
3265 target = mono_create_ftnptr_malloc (target);
3266 } else if (!strcmp (ji->data.name, "specific_trampoline_monitor_enter")) {
3267 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_MONITOR_ENTER, mono_get_root_domain (), NULL);
3268 target = mono_create_ftnptr_malloc (target);
3269 } else if (!strcmp (ji->data.name, "specific_trampoline_monitor_exit")) {
3270 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_MONITOR_EXIT, mono_get_root_domain (), NULL);
3271 target = mono_create_ftnptr_malloc (target);
3272 } else if (!strcmp (ji->data.name, "specific_trampoline_generic_class_init")) {
3273 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_GENERIC_CLASS_INIT, mono_get_root_domain (), NULL);
3274 target = mono_create_ftnptr_malloc (target);
3275 } else if (!strcmp (ji->data.name, "mono_thread_get_and_clear_pending_exception")) {
3276 target = mono_thread_get_and_clear_pending_exception;
3277 } else if (strstr (ji->data.name, "generic_trampoline_")) {
3278 target = mono_aot_get_trampoline (ji->data.name);
3279 } else if (aot_jit_icall_hash && g_hash_table_lookup (aot_jit_icall_hash, ji->data.name)) {
3280 /* Registered by mono_arch_init () */
3281 target = g_hash_table_lookup (aot_jit_icall_hash, ji->data.name);
3283 fprintf (stderr, "Unknown relocation '%s'\n", ji->data.name);
3284 g_assert_not_reached ();
3288 /* Hopefully the code doesn't have patches which need method or
3291 target = mono_resolve_patch_target (NULL, NULL, code, ji, FALSE);
3295 amodule->got [got_slots [pindex]] = target;
3300 mono_mempool_destroy (mp);
3307 * Return the trampoline identified by NAME from the mscorlib AOT file.
3308 * On ppc64, this returns a function descriptor.
3311 mono_aot_get_trampoline (const char *name)
3314 MonoAotModule *amodule;
3316 image = mono_defaults.corlib;
3319 amodule = image->aot_module;
3322 return mono_create_ftnptr_malloc (load_function (amodule, name));
3325 /* Return a given kind of trampoline */
3327 get_numerous_trampoline (MonoAotTrampoline tramp_type, int n_got_slots, MonoAotModule **out_amodule, guint32 *got_offset, guint32 *out_tramp_size)
3329 MonoAotModule *amodule;
3330 int index, tramp_size;
3333 /* Currently, we keep all trampolines in the mscorlib AOT image */
3334 image = mono_defaults.corlib;
3339 amodule = image->aot_module;
3342 *out_amodule = amodule;
3344 if (amodule->trampoline_index [tramp_type] == amodule->info.num_trampolines [tramp_type])
3345 g_error ("Ran out of trampolines of type %d in '%s' (%d)\n", tramp_type, image->name, amodule->info.num_trampolines [tramp_type]);
3347 index = amodule->trampoline_index [tramp_type] ++;
3351 *got_offset = amodule->info.trampoline_got_offset_base [tramp_type] + (index * n_got_slots);
3353 tramp_size = amodule->info.trampoline_size [tramp_type];
3356 *out_tramp_size = tramp_size;
3358 return amodule->trampolines [tramp_type] + (index * tramp_size);
3362 * Return a specific trampoline from the AOT file.
3365 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
3367 MonoAotModule *amodule;
3368 guint32 got_offset, tramp_size;
3369 guint8 *code, *tramp;
3370 static gpointer generic_trampolines [MONO_TRAMPOLINE_NUM];
3371 static gboolean inited;
3372 static guint32 num_trampolines;
3378 mono_counters_register ("Specific trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &num_trampolines);
3387 if (!generic_trampolines [tramp_type]) {
3390 symbol = mono_get_generic_trampoline_name (tramp_type);
3391 generic_trampolines [tramp_type] = mono_aot_get_trampoline (symbol);
3395 tramp = generic_trampolines [tramp_type];
3398 code = get_numerous_trampoline (MONO_AOT_TRAMP_SPECIFIC, 2, &amodule, &got_offset, &tramp_size);
3400 amodule->got [got_offset] = tramp;
3401 amodule->got [got_offset + 1] = arg1;
3404 *code_len = tramp_size;
3410 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
3412 MonoAotModule *amodule;
3416 code = get_numerous_trampoline (MONO_AOT_TRAMP_STATIC_RGCTX, 2, &amodule, &got_offset, NULL);
3418 amodule->got [got_offset] = ctx;
3419 amodule->got [got_offset + 1] = addr;
3421 /* The caller expects an ftnptr */
3422 return mono_create_ftnptr (mono_domain_get (), code);
3426 mono_aot_get_unbox_trampoline (MonoMethod *method)
3428 guint32 method_index = mono_metadata_token_index (method->token) - 1;
3429 MonoAotModule *amodule;
3433 if (method->is_inflated && !mono_method_is_generic_sharable_impl (method, FALSE)) {
3434 guint32 index = find_extra_method (method, &amodule);
3435 g_assert (index != 0xffffff);
3437 symbol = g_strdup_printf ("ut_e_%d", index);
3439 amodule = method->klass->image->aot_module;
3442 symbol = g_strdup_printf ("ut_%d", method_index);
3444 code = load_function (amodule, symbol);
3447 /* The caller expects an ftnptr */
3448 return mono_create_ftnptr (mono_domain_get (), code);
3452 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
3457 symbol = mono_get_rgctx_fetch_trampoline_name (slot);
3458 code = load_function (mono_defaults.corlib->aot_module, symbol);
3460 /* The caller expects an ftnptr */
3461 return mono_create_ftnptr (mono_domain_get (), code);
3465 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
3471 MonoAotModule *amodule;
3473 code = get_numerous_trampoline (MONO_AOT_TRAMP_IMT_THUNK, 1, &amodule, &got_offset, NULL);
3475 /* Save the entries into an array */
3476 buf = mono_domain_alloc (domain, (count + 1) * 2 * sizeof (gpointer));
3477 for (i = 0; i < count; ++i) {
3478 MonoIMTCheckItem *item = imt_entries [i];
3480 g_assert (item->key);
3482 g_assert (!item->has_target_code);
3484 buf [(i * 2)] = item->key;
3485 buf [(i * 2) + 1] = &(vtable->vtable [item->value.vtable_slot]);
3487 buf [(count * 2)] = NULL;
3488 buf [(count * 2) + 1] = fail_tramp;
3490 amodule->got [got_offset] = buf;
3496 * mono_aot_set_make_unreadable:
3498 * Set whenever to make all mmaped memory unreadable. In conjuction with a
3499 * SIGSEGV handler, this is useful to find out which pages the runtime tries to read.
3502 mono_aot_set_make_unreadable (gboolean unreadable)
3506 make_unreadable = unreadable;
3508 if (make_unreadable && !inited) {
3509 mono_counters_register ("AOT pagefaults", MONO_COUNTER_JIT | MONO_COUNTER_INT, &n_pagefaults);
3514 MonoAotModule *module;
3519 find_map (gpointer key, gpointer value, gpointer user_data)
3521 MonoAotModule *module = (MonoAotModule*)value;
3522 FindMapUserData *data = (FindMapUserData*)user_data;
3525 if ((data->ptr >= module->mem_begin) && (data->ptr < module->mem_end))
3526 data->module = module;
3529 static MonoAotModule*
3530 find_module_for_addr (void *ptr)
3532 FindMapUserData data;
3534 if (!make_unreadable)
3538 data.ptr = (guint8*)ptr;
3541 g_hash_table_foreach (aot_modules, (GHFunc)find_map, &data);
3548 * mono_aot_is_pagefault:
3550 * Should be called from a SIGSEGV signal handler to find out whenever @ptr is
3551 * within memory allocated by this module.
3554 mono_aot_is_pagefault (void *ptr)
3556 if (!make_unreadable)
3560 * Not signal safe, but SIGSEGV's are synchronous, and
3561 * this is only turned on by a MONO_DEBUG option.
3563 return find_module_for_addr (ptr) != NULL;
3567 * mono_aot_handle_pagefault:
3569 * Handle a pagefault caused by an unreadable page by making it readable again.
3572 mono_aot_handle_pagefault (void *ptr)
3574 #ifndef PLATFORM_WIN32
3575 guint8* start = (guint8*)ROUND_DOWN (((gssize)ptr), mono_pagesize ());
3579 res = mono_mprotect (start, mono_pagesize (), MONO_MMAP_READ|MONO_MMAP_WRITE|MONO_MMAP_EXEC);
3580 g_assert (res == 0);
3591 mono_aot_init (void)
3596 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
3602 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
3608 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
3614 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
3620 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
3626 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
3632 mono_aot_get_plt_entry (guint8 *code)
3638 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
3644 mono_aot_patch_plt_entry (guint8 *code, gpointer *got, mgreg_t *regs, guint8 *addr)
3649 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
3655 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
3657 g_assert_not_reached ();
3663 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
3665 g_assert_not_reached ();
3670 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
3672 g_assert_not_reached ();
3677 mono_aot_get_trampoline (const char *name)
3679 g_assert_not_reached ();
3684 mono_aot_get_unbox_trampoline (MonoMethod *method)
3686 g_assert_not_reached ();
3691 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
3693 g_assert_not_reached ();
3698 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
3700 g_assert_not_reached ();
3705 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
3707 g_assert_not_reached ();
3712 mono_aot_register_jit_icall (const char *name, gpointer addr)