2 * aot-runtime.c: mono Ahead of Time compiler
5 * Dietmar Maurer (dietmar@ximian.com)
6 * Zoltan Varga (vargaz@gmail.com)
8 * (C) 2002 Ximian, Inc.
12 #include <sys/types.h>
18 #ifdef HAVE_SYS_MMAN_H
27 #ifdef HAVE_EXECINFO_H
34 #ifdef HAVE_SYS_WAIT_H
35 #include <sys/wait.h> /* for WIFEXITED, WEXITSTATUS */
38 #ifdef HAVE_DL_ITERATE_PHDR
42 #include <mono/metadata/tabledefs.h>
43 #include <mono/metadata/class.h>
44 #include <mono/metadata/object.h>
45 #include <mono/metadata/tokentype.h>
46 #include <mono/metadata/appdomain.h>
47 #include <mono/metadata/debug-helpers.h>
48 #include <mono/metadata/assembly.h>
49 #include <mono/metadata/metadata-internals.h>
50 #include <mono/metadata/marshal.h>
51 #include <mono/metadata/gc-internal.h>
52 #include <mono/metadata/monitor.h>
53 #include <mono/metadata/threads-types.h>
54 #include <mono/metadata/mono-endian.h>
55 #include <mono/utils/mono-logger-internal.h>
56 #include <mono/utils/mono-mmap.h>
57 #include "mono/utils/mono-compiler.h"
58 #include <mono/utils/mono-counters.h>
66 #define SHARED_EXT ".dll"
67 #elif ((defined(__ppc__) || defined(__powerpc__) || defined(__ppc64__)) || defined(__MACH__)) && !defined(__linux__)
68 #define SHARED_EXT ".dylib"
69 #elif defined(__APPLE__) && defined(TARGET_X86) && !defined(__native_client_codegen__)
70 #define SHARED_EXT ".dylib"
72 #define SHARED_EXT ".so"
75 #define ALIGN_PTR_TO(ptr,align) (gpointer)((((gssize)(ptr)) + (align - 1)) & (~(align - 1)))
76 #define ROUND_DOWN(VALUE,SIZE) ((VALUE) & ~((SIZE) - 1))
78 typedef struct MonoAotModule {
80 /* Pointer to the Global Offset Table */
82 GHashTable *name_cache;
83 GHashTable *extra_methods;
84 /* Maps methods to their code */
85 GHashTable *method_to_code;
86 /* Maps pointers into the method info to the methods themselves */
87 GHashTable *method_ref_to_method;
88 MonoAssemblyName *image_names;
90 MonoAssembly *assembly;
91 MonoImage **image_table;
92 guint32 image_table_len;
102 gint32 *code_offsets;
103 /* This contains <offset, index> pairs sorted by offset */
104 /* This is needed because LLVM emitted methods can be in any order */
105 gint32 *sorted_code_offsets;
106 gint32 sorted_code_offsets_len;
107 guint32 *method_info_offsets;
108 guint32 *got_info_offsets;
109 guint32 *ex_info_offsets;
110 guint32 *class_info_offsets;
111 guint32 *methods_loaded;
112 guint16 *class_name_table;
113 guint32 *extra_method_table;
114 guint32 *extra_method_info_offsets;
118 /* Points to the mono EH data created by LLVM */
119 guint8 *mono_eh_frame;
121 /* Points to the trampolines */
122 guint8 *trampolines [MONO_AOT_TRAMP_NUM];
123 /* The first unused trampoline of each kind */
124 guint32 trampoline_index [MONO_AOT_TRAMP_NUM];
126 MonoAotFileInfo info;
132 static GHashTable *aot_modules;
133 #define mono_aot_lock() EnterCriticalSection (&aot_mutex)
134 #define mono_aot_unlock() LeaveCriticalSection (&aot_mutex)
135 static CRITICAL_SECTION aot_mutex;
138 * Maps assembly names to the mono_aot_module_<NAME>_info symbols in the
139 * AOT modules registered by mono_aot_register_module ().
141 static GHashTable *static_aot_modules;
144 * Maps MonoJitInfo* to the aot module they belong to, this can be different
145 * from ji->method->klass->image's aot module for generic instances.
147 static GHashTable *ji_to_amodule;
150 * Whenever to AOT compile loaded assemblies on demand and store them in
151 * a cache under $HOME/.mono/aot-cache.
153 static gboolean use_aot_cache = FALSE;
156 * Whenever to spawn a new process to AOT a file or do it in-process. Only relevant if
157 * use_aot_cache is TRUE.
159 static gboolean spawn_compiler = TRUE;
162 static gint32 mono_last_aot_method = -1;
164 static gboolean make_unreadable = FALSE;
165 static guint32 name_table_accesses = 0;
166 static guint32 n_pagefaults = 0;
168 /* Used to speed-up find_aot_module () */
169 static gsize aot_code_low_addr = (gssize)-1;
170 static gsize aot_code_high_addr = 0;
172 static GHashTable *aot_jit_icall_hash;
175 init_plt (MonoAotModule *info);
177 /*****************************************************/
179 /*****************************************************/
184 * Load one of the images referenced by AMODULE. Returns NULL if the image is not
185 * found, and sets the loader error if SET_ERROR is TRUE.
188 load_image (MonoAotModule *amodule, int index, gboolean set_error)
190 MonoAssembly *assembly;
191 MonoImageOpenStatus status;
193 g_assert (index < amodule->image_table_len);
195 if (amodule->image_table [index])
196 return amodule->image_table [index];
197 if (amodule->out_of_date)
200 assembly = mono_assembly_load (&amodule->image_names [index], amodule->assembly->basedir, &status);
202 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);
203 amodule->out_of_date = TRUE;
206 char *full_name = mono_stringify_assembly_name (&amodule->image_names [index]);
207 mono_loader_set_error_assembly_load (full_name, FALSE);
213 if (strcmp (assembly->image->guid, amodule->image_guids [index])) {
214 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is unusable (GUID of dependent assembly %s doesn't match (expected '%s', got '%s').\n", amodule->aot_name, amodule->image_names [index].name, amodule->image_guids [index], assembly->image->guid);
215 amodule->out_of_date = TRUE;
219 amodule->image_table [index] = assembly->image;
220 return assembly->image;
224 decode_value (guint8 *ptr, guint8 **rptr)
229 if ((b & 0x80) == 0){
232 } else if ((b & 0x40) == 0){
233 len = ((b & 0x3f) << 8 | ptr [1]);
235 } else if (b != 0xff) {
236 len = ((b & 0x1f) << 24) |
243 len = (ptr [1] << 24) | (ptr [2] << 16) | (ptr [3] << 8) | ptr [4];
249 //printf ("DECODE: %d.\n", len);
254 * mono_aot_get_method:
256 * Decode an offset table emitted by emit_offset_table (), returning the INDEXth
260 mono_aot_get_offset (guint32 *table, int index)
262 int i, group, ngroups, index_entry_size;
263 int start_offset, offset, noffsets, group_size;
264 guint8 *data_start, *p;
265 guint32 *index32 = NULL;
266 guint16 *index16 = NULL;
268 noffsets = table [0];
269 group_size = table [1];
271 index_entry_size = table [3];
272 group = index / group_size;
274 if (index_entry_size == 2) {
275 index16 = (guint16*)&table [4];
276 data_start = (guint8*)&index16 [ngroups];
277 p = data_start + index16 [group];
279 index32 = (guint32*)&table [4];
280 data_start = (guint8*)&index32 [ngroups];
281 p = data_start + index32 [group];
284 /* offset will contain the value of offsets [group * group_size] */
285 offset = start_offset = decode_value (p, &p);
286 for (i = group * group_size + 1; i <= index; ++i) {
287 offset += decode_value (p, &p);
290 //printf ("Offset lookup: %d -> %d, start=%d, p=%d\n", index, offset, start_offset, table [3 + group]);
296 decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf);
299 decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf);
301 static MonoGenericInst*
302 decode_generic_inst (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
305 MonoType **type_argv;
306 MonoGenericInst *inst;
309 type_argc = decode_value (p, &p);
310 type_argv = g_new0 (MonoType*, type_argc);
312 for (i = 0; i < type_argc; ++i) {
313 MonoClass *pclass = decode_klass_ref (module, p, &p);
318 type_argv [i] = &pclass->byval_arg;
321 inst = mono_metadata_get_generic_inst (type_argc, type_argv);
330 decode_generic_context (MonoAotModule *module, MonoGenericContext *ctx, guint8 *buf, guint8 **endbuf)
332 gboolean has_class_inst, has_method_inst;
335 has_class_inst = decode_value (p, &p);
336 if (has_class_inst) {
337 ctx->class_inst = decode_generic_inst (module, p, &p);
338 if (!ctx->class_inst)
341 has_method_inst = decode_value (p, &p);
342 if (has_method_inst) {
343 ctx->method_inst = decode_generic_inst (module, p, &p);
344 if (!ctx->method_inst)
353 decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
356 MonoClass *klass, *eklass;
360 token = decode_value (p, &p);
365 if (mono_metadata_token_table (token) == 0) {
366 image = load_image (module, decode_value (p, &p), TRUE);
369 klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF + token);
370 } else if (mono_metadata_token_table (token) == MONO_TABLE_TYPESPEC) {
371 if (token == MONO_TOKEN_TYPE_SPEC) {
372 MonoTypeEnum type = decode_value (p, &p);
374 if (type == MONO_TYPE_GENERICINST) {
376 MonoGenericContext ctx;
379 gclass = decode_klass_ref (module, p, &p);
382 g_assert (gclass->generic_container);
384 memset (&ctx, 0, sizeof (ctx));
385 ctx.class_inst = decode_generic_inst (module, p, &p);
388 type = mono_class_inflate_generic_type (&gclass->byval_arg, &ctx);
389 klass = mono_class_from_mono_type (type);
390 mono_metadata_free_type (type);
391 } else if ((type == MONO_TYPE_VAR) || (type == MONO_TYPE_MVAR)) {
393 MonoGenericContainer *container;
395 int num = decode_value (p, &p);
396 gboolean is_method = decode_value (p, &p);
399 MonoMethod *method_def;
400 g_assert (type == MONO_TYPE_MVAR);
401 method_def = decode_resolve_method_ref (module, p, &p);
405 container = mono_method_get_generic_container (method_def);
407 MonoClass *class_def;
408 g_assert (type == MONO_TYPE_VAR);
409 class_def = decode_klass_ref (module, p, &p);
413 container = class_def->generic_container;
416 g_assert (container);
418 // FIXME: Memory management
419 t = g_new0 (MonoType, 1);
421 t->data.generic_param = mono_generic_container_get_param (container, num);
423 // FIXME: Maybe use types directly to avoid
424 // the overhead of creating MonoClass-es
425 klass = mono_class_from_mono_type (t);
429 g_assert_not_reached ();
432 image = load_image (module, decode_value (p, &p), TRUE);
435 klass = mono_class_get (image, token);
437 } else if (token == MONO_TOKEN_TYPE_DEF) {
439 image = load_image (module, decode_value (p, &p), TRUE);
442 rank = decode_value (p, &p);
443 eklass = decode_klass_ref (module, p, &p);
444 klass = mono_array_class_get (eklass, rank);
446 g_assert_not_reached ();
454 static MonoClassField*
455 decode_field_info (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
457 MonoClass *klass = decode_klass_ref (module, buf, &buf);
464 token = MONO_TOKEN_FIELD_DEF + decode_value (p, &p);
468 return mono_class_get_field (klass, token);
471 /* Stores information returned by decode_method_ref () */
476 gboolean no_aot_trampoline;
480 * decode_method_ref_with_target:
482 * Decode a method reference, storing the image/token into a MethodRef structure.
483 * This avoids loading metadata for the method if the caller does not need it. If the method has
484 * no token, then it is loaded from metadata and ref->method is set to the method instance.
485 * If TARGET is non-NULL, abort decoding if it can be determined that the decoded method couldn't resolve to TARGET, and return FALSE.
488 decode_method_ref_with_target (MonoAotModule *module, MethodRef *ref, MonoMethod *target, guint8 *buf, guint8 **endbuf)
490 guint32 image_index, value;
491 MonoImage *image = NULL;
494 memset (ref, 0, sizeof (MethodRef));
496 value = decode_value (p, &p);
497 image_index = value >> 24;
499 if (image_index == MONO_AOT_METHODREF_NO_AOT_TRAMPOLINE) {
500 ref->no_aot_trampoline = TRUE;
501 value = decode_value (p, &p);
502 image_index = value >> 24;
505 if (image_index < MONO_AOT_METHODREF_MIN || image_index == MONO_AOT_METHODREF_METHODSPEC || image_index == MONO_AOT_METHODREF_GINST) {
506 if (target && target->wrapper_type)
510 if (image_index == MONO_AOT_METHODREF_WRAPPER) {
511 guint32 wrapper_type;
513 wrapper_type = decode_value (p, &p);
515 if (target && target->wrapper_type != wrapper_type)
519 image = mono_defaults.corlib;
521 switch (wrapper_type) {
522 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK: {
523 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
527 mono_class_init (m->klass);
528 ref->method = mono_marshal_get_remoting_invoke_with_check (m);
531 case MONO_WRAPPER_PROXY_ISINST: {
532 MonoClass *klass = decode_klass_ref (module, p, &p);
535 ref->method = mono_marshal_get_proxy_cancast (klass);
538 case MONO_WRAPPER_LDFLD:
539 case MONO_WRAPPER_LDFLDA:
540 case MONO_WRAPPER_STFLD:
541 case MONO_WRAPPER_ISINST: {
542 MonoClass *klass = decode_klass_ref (module, p, &p);
545 if (wrapper_type == MONO_WRAPPER_LDFLD)
546 ref->method = mono_marshal_get_ldfld_wrapper (&klass->byval_arg);
547 else if (wrapper_type == MONO_WRAPPER_LDFLDA)
548 ref->method = mono_marshal_get_ldflda_wrapper (&klass->byval_arg);
549 else if (wrapper_type == MONO_WRAPPER_STFLD)
550 ref->method = mono_marshal_get_stfld_wrapper (&klass->byval_arg);
551 else if (wrapper_type == MONO_WRAPPER_ISINST)
552 ref->method = mono_marshal_get_isinst (klass);
554 g_assert_not_reached ();
557 case MONO_WRAPPER_LDFLD_REMOTE:
558 ref->method = mono_marshal_get_ldfld_remote_wrapper (NULL);
560 case MONO_WRAPPER_STFLD_REMOTE:
561 ref->method = mono_marshal_get_stfld_remote_wrapper (NULL);
563 case MONO_WRAPPER_ALLOC: {
564 int atype = decode_value (p, &p);
566 ref->method = mono_gc_get_managed_allocator_by_type (atype);
569 case MONO_WRAPPER_WRITE_BARRIER:
570 ref->method = mono_gc_get_write_barrier ();
572 case MONO_WRAPPER_STELEMREF:
573 ref->method = mono_marshal_get_stelemref ();
575 case MONO_WRAPPER_SYNCHRONIZED: {
576 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
580 ref->method = mono_marshal_get_synchronized_wrapper (m);
583 case MONO_WRAPPER_UNKNOWN: {
584 MonoMethodDesc *desc;
585 MonoMethod *orig_method;
586 int subtype = decode_value (p, &p);
588 if (subtype == MONO_AOT_WRAPPER_PTR_TO_STRUCTURE || subtype == MONO_AOT_WRAPPER_STRUCTURE_TO_PTR) {
589 MonoClass *klass = decode_klass_ref (module, p, &p);
595 if (klass != target->klass)
598 if (subtype == MONO_AOT_WRAPPER_PTR_TO_STRUCTURE) {
599 if (strcmp (target->name, "PtrToStructure"))
601 ref->method = mono_marshal_get_ptr_to_struct (klass);
603 if (strcmp (target->name, "StructureToPtr"))
605 ref->method = mono_marshal_get_struct_to_ptr (klass);
608 if (subtype == MONO_AOT_WRAPPER_MONO_ENTER)
609 desc = mono_method_desc_new ("Monitor:Enter", FALSE);
610 else if (subtype == MONO_AOT_WRAPPER_MONO_EXIT)
611 desc = mono_method_desc_new ("Monitor:Exit", FALSE);
613 g_assert_not_reached ();
614 orig_method = mono_method_desc_search_in_class (desc, mono_defaults.monitor_class);
615 g_assert (orig_method);
616 mono_method_desc_free (desc);
617 ref->method = mono_monitor_get_fast_path (orig_method);
621 case MONO_WRAPPER_RUNTIME_INVOKE: {
623 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
627 ref->method = mono_marshal_get_runtime_invoke (m, FALSE);
630 case MONO_WRAPPER_MANAGED_TO_MANAGED: {
631 int subtype = decode_value (p, &p);
633 if (subtype == MONO_AOT_WRAPPER_ELEMENT_ADDR) {
634 int rank = decode_value (p, &p);
635 int elem_size = decode_value (p, &p);
637 ref->method = mono_marshal_get_array_address (rank, elem_size);
639 g_assert_not_reached ();
643 case MONO_WRAPPER_MANAGED_TO_NATIVE: {
644 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
649 /* This should only happen when looking for an extra method */
651 if (mono_marshal_method_from_wrapper (target) == m)
652 ref->method = target;
657 case MONO_WRAPPER_CASTCLASS: {
658 int subtype = decode_value (p, &p);
660 if (subtype == MONO_AOT_WRAPPER_CASTCLASS_WITH_CACHE)
661 ref->method = mono_marshal_get_castclass_with_cache ();
663 g_assert_not_reached ();
667 g_assert_not_reached ();
669 } else if (image_index == MONO_AOT_METHODREF_WRAPPER_NAME) {
672 /* Can't decode these */
673 g_assert_not_reached ();
674 } else if (image_index == MONO_AOT_METHODREF_METHODSPEC) {
675 image_index = decode_value (p, &p);
676 ref->token = decode_value (p, &p);
678 image = load_image (module, image_index, TRUE);
681 } else if (image_index == MONO_AOT_METHODREF_GINST) {
683 MonoGenericContext ctx;
686 * These methods do not have a token which resolves them, so we
687 * resolve them immediately.
689 klass = decode_klass_ref (module, p, &p);
693 if (target && target->klass != klass)
696 image_index = decode_value (p, &p);
697 ref->token = decode_value (p, &p);
699 image = load_image (module, image_index, TRUE);
703 ref->method = mono_get_method_full (image, ref->token, NULL, NULL);
707 memset (&ctx, 0, sizeof (ctx));
709 if (FALSE && klass->generic_class) {
710 ctx.class_inst = klass->generic_class->context.class_inst;
711 ctx.method_inst = NULL;
713 ref->method = mono_class_inflate_generic_method_full (ref->method, klass, &ctx);
716 memset (&ctx, 0, sizeof (ctx));
718 if (!decode_generic_context (module, &ctx, p, &p))
721 ref->method = mono_class_inflate_generic_method_full (ref->method, klass, &ctx);
722 } else if (image_index == MONO_AOT_METHODREF_ARRAY) {
726 klass = decode_klass_ref (module, p, &p);
729 method_type = decode_value (p, &p);
730 switch (method_type) {
732 ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank);
735 ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank * 2);
738 ref->method = mono_class_get_method_from_name (klass, "Get", -1);
741 ref->method = mono_class_get_method_from_name (klass, "Address", -1);
744 ref->method = mono_class_get_method_from_name (klass, "Set", -1);
747 g_assert_not_reached ();
750 g_assert (image_index < MONO_AOT_METHODREF_MIN);
751 ref->token = MONO_TOKEN_METHOD_DEF | (value & 0xffffff);
753 image = load_image (module, image_index, TRUE);
766 decode_method_ref (MonoAotModule *module, MethodRef *ref, guint8 *buf, guint8 **endbuf)
768 return decode_method_ref_with_target (module, ref, NULL, buf, endbuf);
772 * decode_resolve_method_ref_with_target:
774 * Similar to decode_method_ref, but resolve and return the method itself.
777 decode_resolve_method_ref_with_target (MonoAotModule *module, MonoMethod *target, guint8 *buf, guint8 **endbuf)
782 res = decode_method_ref_with_target (module, &ref, target, buf, endbuf);
789 return mono_get_method (ref.image, ref.token, NULL);
793 decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
795 return decode_resolve_method_ref_with_target (module, NULL, buf, endbuf);
799 create_cache_structure (void)
805 home = g_get_home_dir ();
809 tmp = g_build_filename (home, ".mono", NULL);
810 if (!g_file_test (tmp, G_FILE_TEST_IS_DIR)) {
811 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT creating directory %s", tmp);
815 err = mkdir (tmp, 0777);
818 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed: %s", g_strerror (errno));
824 tmp = g_build_filename (home, ".mono", "aot-cache", NULL);
825 if (!g_file_test (tmp, G_FILE_TEST_IS_DIR)) {
826 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT creating directory %s", tmp);
830 err = mkdir (tmp, 0777);
833 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed: %s", g_strerror (errno));
842 * load_aot_module_from_cache:
844 * Experimental code to AOT compile loaded assemblies on demand.
847 * - Add environment variable MONO_AOT_CACHE_OPTIONS
848 * - Add options for controlling the cache size
849 * - Handle full cache by deleting old assemblies lru style
850 * - Add options for excluding assemblies during development
851 * - Maybe add a threshold after an assembly is AOT compiled
852 * - invoking a new mono process is a security risk
853 * - recompile the AOT module if one of its dependencies changes
856 load_aot_module_from_cache (MonoAssembly *assembly, char **aot_name)
858 char *fname, *cmd, *tmp2, *aot_options;
867 if (assembly->image->dynamic)
870 create_cache_structure ();
872 home = g_get_home_dir ();
874 tmp2 = g_strdup_printf ("%s-%s%s", assembly->image->assembly_name, assembly->image->guid, SHARED_EXT);
875 fname = g_build_filename (home, ".mono", "aot-cache", tmp2, NULL);
879 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT trying to load from cache: '%s'.", fname);
880 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
883 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT not found.");
885 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT precompiling assembly '%s'... ", assembly->image->name);
887 aot_options = g_strdup_printf ("outfile=%s", fname);
889 if (spawn_compiler) {
890 /* FIXME: security */
891 /* FIXME: Has to pass the assembly loading path to the child process */
892 cmd = g_strdup_printf ("mono -O=all --aot=%s %s", aot_options, assembly->image->name);
894 res = g_spawn_command_line_sync (cmd, &out, &err, &exit_status, NULL);
896 #if !defined(HOST_WIN32) && !defined(__ppc__) && !defined(__ppc64__) && !defined(__powerpc__)
898 if (!WIFEXITED (exit_status) && (WEXITSTATUS (exit_status) == 0))
899 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT failed: %s.", err);
901 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT succeeded.");
908 res = mono_compile_assembly (assembly, mono_parse_default_optimizations (NULL), aot_options);
910 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT failed.");
912 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT succeeded.");
916 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
918 g_free (aot_options);
925 find_symbol (MonoDl *module, gpointer *globals, const char *name, gpointer *value)
929 guint16 *table, *entry;
933 /* The first entry points to the hash */
937 table_size = table [0];
940 hash = mono_metadata_str_hash (name) % table_size;
942 entry = &table [hash * 2];
944 /* Search the hash for the index into the globals table */
946 while (entry [0] != 0) {
947 guint32 index = entry [0] - 1;
948 guint32 next = entry [1];
950 //printf ("X: %s %s\n", (char*)globals [index * 2], name);
952 if (!strcmp (globals [index * 2], name)) {
953 global_index = index;
958 entry = &table [next * 2];
964 if (global_index != -1)
965 *value = globals [global_index * 2 + 1];
969 char *err = mono_dl_symbol (module, name, value);
977 check_usable (MonoAssembly *assembly, MonoAotFileInfo *info, char **out_msg)
981 gboolean usable = TRUE;
985 if (strcmp (assembly->image->guid, info->assembly_guid)) {
986 msg = g_strdup_printf ("doesn't match assembly");
990 build_info = mono_get_runtime_build_info ();
991 if (strlen (info->runtime_version) > 0 && strcmp (info->runtime_version, build_info)) {
992 msg = g_strdup_printf ("compiled against runtime version '%s' while this runtime has version '%s'", info->runtime_version, build_info);
997 full_aot = info->flags & MONO_AOT_FILE_FLAG_FULL_AOT;
999 if (mono_aot_only && !full_aot) {
1000 msg = g_strdup_printf ("not compiled with --aot=full");
1003 if (!mono_aot_only && full_aot) {
1004 msg = g_strdup_printf ("compiled with --aot=full");
1008 /* mono_arch_find_imt_method () requires this */
1009 if ((info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM) && !mono_use_llvm) {
1010 msg = g_strdup_printf ("compiled against LLVM");
1013 if (!(info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM) && mono_use_llvm) {
1014 msg = g_strdup_printf ("not compiled against LLVM");
1018 if (mini_get_debug_options ()->mdb_optimizations && !(info->flags & MONO_AOT_FILE_FLAG_DEBUG) && !full_aot) {
1019 msg = g_strdup_printf ("not compiled for debugging");
1025 if (info->gc_name_index != -1) {
1026 char *gc_name = (char*)&blob [info->gc_name_index];
1027 const char *current_gc_name = mono_gc_get_gc_name ();
1029 if (strcmp (current_gc_name, gc_name) != 0) {
1030 msg = g_strdup_printf ("compiled against GC %s, while the current runtime uses GC %s.\n", gc_name, current_gc_name);
1040 load_aot_module (MonoAssembly *assembly, gpointer user_data)
1043 MonoAotModule *amodule;
1045 gboolean usable = TRUE;
1046 char *version_symbol = NULL;
1048 gpointer *globals = NULL;
1049 MonoAotFileInfo *info = NULL;
1052 gboolean do_load_image = TRUE;
1054 if (mono_compile_aot)
1057 if (assembly->image->aot_module)
1059 * Already loaded. This can happen because the assembly loading code might invoke
1060 * the assembly load hooks multiple times for the same assembly.
1064 if (assembly->image->dynamic)
1067 if (mono_security_get_mode () == MONO_SECURITY_MODE_CAS)
1071 if (static_aot_modules)
1072 info = g_hash_table_lookup (static_aot_modules, assembly->aname.name);
1078 /* Statically linked AOT module */
1080 aot_name = g_strdup_printf ("%s", assembly->aname.name);
1081 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "Found statically linked AOT module '%s'.\n", aot_name);
1082 globals = info->globals;
1085 sofile = load_aot_module_from_cache (assembly, &aot_name);
1088 aot_name = g_strdup_printf ("%s%s", assembly->image->name, SHARED_EXT);
1090 sofile = mono_dl_open (aot_name, MONO_DL_LAZY, &err);
1093 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed to load AOT module %s: %s\n", aot_name, err);
1099 if (!sofile && !globals) {
1100 if (mono_aot_only) {
1101 fprintf (stderr, "Failed to load AOT module '%s' in aot-only mode.\n", aot_name);
1109 find_symbol (sofile, globals, "mono_aot_version", (gpointer *) &version_symbol);
1110 find_symbol (sofile, globals, "mono_aot_file_info", (gpointer*)&info);
1113 if (version_symbol) {
1114 /* Old file format */
1115 version = atoi (version_symbol);
1118 version = info->version;
1121 if (version != MONO_AOT_FILE_VERSION) {
1122 msg = g_strdup_printf ("wrong file format version (expected %d got %d)", MONO_AOT_FILE_VERSION, version);
1125 usable = check_usable (assembly, info, &msg);
1129 if (mono_aot_only) {
1130 fprintf (stderr, "Failed to load AOT module '%s' while running in aot-only mode: %s.\n", aot_name, msg);
1133 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is unusable: %s.\n", aot_name, msg);
1138 mono_dl_close (sofile);
1139 assembly->image->aot_module = NULL;
1144 g_assert (info->double_align == __alignof__ (double));
1145 g_assert (info->long_align == __alignof__ (gint64));
1149 amodule = g_new0 (MonoAotModule, 1);
1150 amodule->aot_name = aot_name;
1151 amodule->assembly = assembly;
1153 memcpy (&amodule->info, info, sizeof (*info));
1155 amodule->got = amodule->info.got;
1156 amodule->got [0] = assembly->image;
1157 amodule->globals = globals;
1158 amodule->sofile = sofile;
1159 amodule->method_to_code = g_hash_table_new (mono_aligned_addr_hash, NULL);
1160 amodule->blob = blob;
1162 /* Read image table */
1164 guint32 table_len, i;
1167 table = info->image_table;
1170 table_len = *(guint32*)table;
1171 table += sizeof (guint32);
1172 amodule->image_table = g_new0 (MonoImage*, table_len);
1173 amodule->image_names = g_new0 (MonoAssemblyName, table_len);
1174 amodule->image_guids = g_new0 (char*, table_len);
1175 amodule->image_table_len = table_len;
1176 for (i = 0; i < table_len; ++i) {
1177 MonoAssemblyName *aname = &(amodule->image_names [i]);
1179 aname->name = g_strdup (table);
1180 table += strlen (table) + 1;
1181 amodule->image_guids [i] = g_strdup (table);
1182 table += strlen (table) + 1;
1184 aname->culture = g_strdup (table);
1185 table += strlen (table) + 1;
1186 memcpy (aname->public_key_token, table, strlen (table) + 1);
1187 table += strlen (table) + 1;
1189 table = ALIGN_PTR_TO (table, 8);
1190 aname->flags = *(guint32*)table;
1192 aname->major = *(guint32*)table;
1194 aname->minor = *(guint32*)table;
1196 aname->build = *(guint32*)table;
1198 aname->revision = *(guint32*)table;
1203 amodule->code_offsets = info->code_offsets;
1204 amodule->code = info->methods;
1206 /* Mask out thumb interop bit */
1207 amodule->code = (void*)((mgreg_t)amodule->code & ~1);
1209 amodule->code_end = info->methods_end;
1210 amodule->method_info_offsets = info->method_info_offsets;
1211 amodule->ex_info_offsets = info->ex_info_offsets;
1212 amodule->class_info_offsets = info->class_info_offsets;
1213 amodule->class_name_table = info->class_name_table;
1214 amodule->extra_method_table = info->extra_method_table;
1215 amodule->extra_method_info_offsets = info->extra_method_info_offsets;
1216 amodule->got_info_offsets = info->got_info_offsets;
1217 amodule->unwind_info = info->unwind_info;
1218 amodule->mem_end = info->mem_end;
1219 amodule->mem_begin = amodule->code;
1220 amodule->plt = info->plt;
1221 amodule->plt_end = info->plt_end;
1222 amodule->mono_eh_frame = info->mono_eh_frame;
1223 amodule->trampolines [MONO_AOT_TRAMP_SPECIFIC] = info->specific_trampolines;
1224 amodule->trampolines [MONO_AOT_TRAMP_STATIC_RGCTX] = info->static_rgctx_trampolines;
1225 amodule->trampolines [MONO_AOT_TRAMP_IMT_THUNK] = info->imt_thunks;
1226 amodule->thumb_end = info->thumb_end;
1228 if (make_unreadable) {
1229 #ifndef TARGET_WIN32
1231 guint8 *page_start, *page_end;
1234 addr = amodule->mem_begin;
1235 len = amodule->mem_end - amodule->mem_begin;
1237 /* Round down in both directions to avoid modifying data which is not ours */
1238 page_start = (guint8 *) (((gssize) (addr)) & ~ (mono_pagesize () - 1)) + mono_pagesize ();
1239 page_end = (guint8 *) (((gssize) (addr + len)) & ~ (mono_pagesize () - 1));
1240 if (page_end > page_start) {
1241 err = mono_mprotect (page_start, (page_end - page_start), MONO_MMAP_NONE);
1242 g_assert (err == 0);
1249 aot_code_low_addr = MIN (aot_code_low_addr, (gsize)amodule->code);
1250 aot_code_high_addr = MAX (aot_code_high_addr, (gsize)amodule->code_end);
1252 g_hash_table_insert (aot_modules, assembly, amodule);
1255 mono_jit_info_add_aot_module (assembly->image, amodule->code, amodule->code_end);
1257 assembly->image->aot_module = amodule;
1259 if (mono_aot_only) {
1260 if (mono_defaults.corlib) {
1261 /* The second got slot contains the mscorlib got addr */
1262 MonoAotModule *mscorlib_amodule = mono_defaults.corlib->aot_module;
1264 amodule->got [1] = mscorlib_amodule->got;
1266 amodule->got [1] = amodule->got;
1270 if (mono_gc_is_moving ()) {
1273 memset (&ji, 0, sizeof (ji));
1274 ji.type = MONO_PATCH_INFO_GC_CARD_TABLE_ADDR;
1276 amodule->got [2] = mono_resolve_patch_target (NULL, mono_get_root_domain (), NULL, &ji, FALSE);
1280 * Since we store methoddef and classdef tokens when referring to methods/classes in
1281 * referenced assemblies, we depend on the exact versions of the referenced assemblies.
1282 * MS calls this 'hard binding'. This means we have to load all referenced assemblies
1283 * non-lazily, since we can't handle out-of-date errors later.
1284 * The cached class info also depends on the exact assemblies.
1286 #if defined(__native_client__)
1287 /* TODO: Don't 'load_image' on mscorlib due to a */
1288 /* recursive loading problem. This should be */
1289 /* removed if mscorlib is loaded from disk. */
1290 if (strncmp(assembly->aname.name, "mscorlib", 8)) {
1291 do_load_image = TRUE;
1293 do_load_image = FALSE;
1296 if (do_load_image) {
1297 for (i = 0; i < amodule->image_table_len; ++i)
1298 load_image (amodule, i, FALSE);
1301 if (amodule->out_of_date) {
1302 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);
1303 if (mono_aot_only) {
1304 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);
1309 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT loaded AOT Module for %s.\n", assembly->image->name);
1313 * mono_aot_register_globals:
1315 * This is called by the ctor function in AOT images compiled with the
1316 * 'no-dlsym' option.
1319 mono_aot_register_globals (gpointer *globals)
1321 g_assert_not_reached ();
1325 * mono_aot_register_module:
1327 * This should be called by embedding code to register AOT modules statically linked
1328 * into the executable. AOT_INFO should be the value of the
1329 * 'mono_aot_module_<ASSEMBLY_NAME>_info' global symbol from the AOT module.
1332 mono_aot_register_module (gpointer *aot_info)
1336 MonoAotFileInfo *info = (gpointer)aot_info;
1338 g_assert (info->version == MONO_AOT_FILE_VERSION);
1340 globals = info->globals;
1343 aname = info->assembly_name;
1345 /* This could be called before startup */
1349 if (!static_aot_modules)
1350 static_aot_modules = g_hash_table_new (g_str_hash, g_str_equal);
1352 g_hash_table_insert (static_aot_modules, aname, info);
1359 mono_aot_init (void)
1361 InitializeCriticalSection (&aot_mutex);
1362 aot_modules = g_hash_table_new (NULL, NULL);
1364 mono_install_assembly_load_hook (load_aot_module, NULL);
1366 if (g_getenv ("MONO_LASTAOT"))
1367 mono_last_aot_method = atoi (g_getenv ("MONO_LASTAOT"));
1368 if (g_getenv ("MONO_AOT_CACHE"))
1369 use_aot_cache = TRUE;
1373 mono_aot_cleanup (void)
1375 if (aot_jit_icall_hash)
1376 g_hash_table_destroy (aot_jit_icall_hash);
1378 g_hash_table_destroy (aot_modules);
1382 decode_cached_class_info (MonoAotModule *module, MonoCachedClassInfo *info, guint8 *buf, guint8 **endbuf)
1388 info->vtable_size = decode_value (buf, &buf);
1389 if (info->vtable_size == -1)
1392 flags = decode_value (buf, &buf);
1393 info->ghcimpl = (flags >> 0) & 0x1;
1394 info->has_finalize = (flags >> 1) & 0x1;
1395 info->has_cctor = (flags >> 2) & 0x1;
1396 info->has_nested_classes = (flags >> 3) & 0x1;
1397 info->blittable = (flags >> 4) & 0x1;
1398 info->has_references = (flags >> 5) & 0x1;
1399 info->has_static_refs = (flags >> 6) & 0x1;
1400 info->no_special_static_fields = (flags >> 7) & 0x1;
1401 info->is_generic_container = (flags >> 8) & 0x1;
1403 if (info->has_cctor) {
1404 res = decode_method_ref (module, &ref, buf, &buf);
1407 info->cctor_token = ref.token;
1409 if (info->has_finalize) {
1410 res = decode_method_ref (module, &ref, buf, &buf);
1413 info->finalize_image = ref.image;
1414 info->finalize_token = ref.token;
1417 info->instance_size = decode_value (buf, &buf);
1418 info->class_size = decode_value (buf, &buf);
1419 info->packing_size = decode_value (buf, &buf);
1420 info->min_align = decode_value (buf, &buf);
1428 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
1431 MonoClass *klass = vtable->klass;
1432 MonoAotModule *amodule = klass->image->aot_module;
1434 MonoCachedClassInfo class_info;
1439 if (MONO_CLASS_IS_INTERFACE (klass) || klass->rank || !amodule)
1442 info = &amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
1445 err = decode_cached_class_info (amodule, &class_info, p, &p);
1449 for (i = 0; i < slot; ++i)
1450 decode_method_ref (amodule, &ref, p, &p);
1452 res = decode_method_ref (amodule, &ref, p, &p);
1455 if (ref.no_aot_trampoline)
1458 if (mono_metadata_token_index (ref.token) == 0)
1461 return mono_aot_get_method_from_token (domain, ref.image, ref.token);
1465 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
1467 MonoAotModule *amodule = klass->image->aot_module;
1471 if (klass->rank || !amodule)
1474 p = (guint8*)&amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
1476 err = decode_cached_class_info (amodule, res, p, &p);
1484 * mono_aot_get_class_from_name:
1486 * Obtains a MonoClass with a given namespace and a given name which is located in IMAGE,
1487 * using a cache stored in the AOT file.
1488 * Stores the resulting class in *KLASS if found, stores NULL otherwise.
1490 * Returns: TRUE if the klass was found/not found in the cache, FALSE if no aot file was
1494 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
1496 MonoAotModule *amodule = image->aot_module;
1497 guint16 *table, *entry;
1500 char full_name_buf [1024];
1502 const char *name2, *name_space2;
1504 guint32 cols [MONO_TYPEDEF_SIZE];
1505 GHashTable *nspace_table;
1507 if (!amodule || !amodule->class_name_table)
1514 /* First look in the cache */
1515 if (!amodule->name_cache)
1516 amodule->name_cache = g_hash_table_new (g_str_hash, g_str_equal);
1517 nspace_table = g_hash_table_lookup (amodule->name_cache, name_space);
1519 *klass = g_hash_table_lookup (nspace_table, name);
1526 table_size = amodule->class_name_table [0];
1527 table = amodule->class_name_table + 1;
1529 if (name_space [0] == '\0')
1530 full_name = g_strdup_printf ("%s", name);
1532 if (strlen (name_space) + strlen (name) < 1000) {
1533 sprintf (full_name_buf, "%s.%s", name_space, name);
1534 full_name = full_name_buf;
1536 full_name = g_strdup_printf ("%s.%s", name_space, name);
1539 hash = mono_metadata_str_hash (full_name) % table_size;
1540 if (full_name != full_name_buf)
1543 entry = &table [hash * 2];
1545 if (entry [0] != 0) {
1546 t = &image->tables [MONO_TABLE_TYPEDEF];
1549 guint32 index = entry [0];
1550 guint32 next = entry [1];
1551 guint32 token = mono_metadata_make_token (MONO_TABLE_TYPEDEF, index);
1553 name_table_accesses ++;
1555 mono_metadata_decode_row (t, index - 1, cols, MONO_TYPEDEF_SIZE);
1557 name2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
1558 name_space2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
1560 if (!strcmp (name, name2) && !strcmp (name_space, name_space2)) {
1562 *klass = mono_class_get (image, token);
1567 nspace_table = g_hash_table_lookup (amodule->name_cache, name_space);
1568 if (!nspace_table) {
1569 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
1570 g_hash_table_insert (amodule->name_cache, (char*)name_space2, nspace_table);
1572 g_hash_table_insert (nspace_table, (char*)name2, *klass);
1579 entry = &table [next * 2];
1592 * decode_mono_eh_frame:
1594 * Decode the EH information emitted by our modified LLVM compiler and construct a
1595 * MonoJitInfo structure from it.
1596 * LOCKING: Acquires the domain lock.
1599 decode_llvm_mono_eh_frame (MonoAotModule *amodule, MonoDomain *domain,
1600 MonoMethod *method, guint8 *code,
1601 MonoJitExceptionInfo *clauses, int num_clauses,
1602 int extra_size, GSList **nesting,
1603 int *this_reg, int *this_offset)
1606 guint8 *fde, *cie, *code_start, *code_end;
1607 int version, fde_count;
1609 int i, j, pos, left, right, offset, offset1, offset2, code_len;
1610 MonoJitExceptionInfo *ei;
1611 guint32 fde_len, ei_len, nested_len, nindex;
1612 gpointer *type_info;
1614 MonoLLVMFDEInfo info;
1616 g_assert (amodule->mono_eh_frame);
1618 p = amodule->mono_eh_frame;
1620 /* p points to data emitted by LLVM in DwarfException::EmitMonoEHFrame () */
1624 g_assert (version == 1);
1626 p = ALIGN_PTR_TO (p, 4);
1628 fde_count = *(guint32*)p;
1632 /* There is +1 entry in the table */
1633 cie = p + ((fde_count + 1) * 8);
1635 /* Binary search in the table to find the entry for code */
1636 offset = code - amodule->mono_eh_frame;
1641 pos = (left + right) / 2;
1643 offset1 = table [(pos * 2)];
1644 if (pos + 1 == fde_count)
1646 offset2 = amodule->code_end - amodule->code;
1648 offset2 = table [(pos + 1) * 2];
1650 if (offset < offset1)
1652 else if (offset >= offset2)
1658 code_start = amodule->mono_eh_frame + table [(pos * 2)];
1659 /* This won't overflow because there is +1 entry in the table */
1660 code_end = amodule->mono_eh_frame + table [(pos * 2) + 2];
1661 code_len = code_end - code_start;
1663 g_assert (code >= code_start && code < code_end);
1665 fde = amodule->mono_eh_frame + table [(pos * 2) + 1];
1666 /* This won't overflow because there is +1 entry in the table */
1667 fde_len = table [(pos * 2) + 2 + 1] - table [(pos * 2) + 1];
1669 mono_unwind_decode_llvm_mono_fde (fde, fde_len, cie, code_start, &info);
1671 ei_len = info.ex_info_len;
1672 type_info = info.type_info;
1673 *this_reg = info.this_reg;
1674 *this_offset = info.this_offset;
1676 /* Count number of nested clauses */
1678 for (i = 0; i < ei_len; ++i) {
1679 /* This might be unaligned */
1680 gint32 cindex1 = read32 (type_info [i]);
1683 for (l = nesting [cindex1]; l; l = l->next) {
1684 gint32 nesting_cindex = GPOINTER_TO_INT (l->data);
1686 for (j = 0; j < ei_len; ++j) {
1687 gint32 cindex2 = read32 (type_info [j]);
1689 if (cindex2 == nesting_cindex)
1696 * LLVM might represent one IL region with multiple regions, so have to
1697 * allocate a new JI.
1700 mono_domain_alloc0 (domain, MONO_SIZEOF_JIT_INFO + (sizeof (MonoJitExceptionInfo) * (ei_len + nested_len)) + extra_size);
1702 jinfo->code_size = code_len;
1703 jinfo->used_regs = mono_cache_unwind_info (info.unw_info, info.unw_info_len);
1704 jinfo->method = method;
1705 jinfo->code_start = code;
1706 jinfo->domain_neutral = 0;
1707 /* This signals that used_regs points to a normal cached unwind info */
1708 jinfo->from_aot = 0;
1709 jinfo->num_clauses = ei_len + nested_len;
1711 for (i = 0; i < ei_len; ++i) {
1713 * orig_jinfo contains the original IL exception info saved by the AOT
1714 * compiler, we have to combine that with the information produced by LLVM
1716 /* The type_info entries contain IL clause indexes */
1717 int clause_index = read32 (type_info [i]);
1718 MonoJitExceptionInfo *jei = &jinfo->clauses [i];
1719 MonoJitExceptionInfo *orig_jei = &clauses [clause_index];
1721 g_assert (clause_index < num_clauses);
1722 jei->flags = orig_jei->flags;
1723 jei->data.catch_class = orig_jei->data.catch_class;
1725 jei->try_start = ei [i].try_start;
1726 jei->try_end = ei [i].try_end;
1727 jei->handler_start = ei [i].handler_start;
1729 /* Make sure we transition to thumb when a handler starts */
1730 if (amodule->thumb_end && (guint8*)jei->handler_start < amodule->thumb_end)
1731 jei->handler_start = (void*)((mgreg_t)jei->handler_start + 1);
1734 /* See exception_cb () in mini-llvm.c as to why this is needed */
1736 for (i = 0; i < ei_len; ++i) {
1737 gint32 cindex1 = read32 (type_info [i]);
1740 for (l = nesting [cindex1]; l; l = l->next) {
1741 gint32 nesting_cindex = GPOINTER_TO_INT (l->data);
1743 for (j = 0; j < ei_len; ++j) {
1744 gint32 cindex2 = read32 (type_info [j]);
1746 if (cindex2 == nesting_cindex) {
1748 * The try interval comes from the nested clause, everything else from the
1751 memcpy (&jinfo->clauses [nindex], &jinfo->clauses [j], sizeof (MonoJitExceptionInfo));
1752 jinfo->clauses [nindex].try_start = jinfo->clauses [i].try_start;
1753 jinfo->clauses [nindex].try_end = jinfo->clauses [i].try_end;
1759 g_assert (nindex == ei_len + nested_len);
1765 * LOCKING: Acquires the domain lock.
1768 decode_exception_debug_info (MonoAotModule *amodule, MonoDomain *domain,
1769 MonoMethod *method, guint8* ex_info, guint8 *addr,
1770 guint8 *code, guint32 code_len)
1772 int i, buf_len, num_clauses;
1774 guint used_int_regs, flags;
1775 gboolean has_generic_jit_info, has_dwarf_unwind_info, has_clauses, has_seq_points, has_try_block_holes;
1776 gboolean from_llvm, has_gc_map;
1778 int generic_info_size, try_holes_info_size, num_holes, this_reg = 0, this_offset = 0;
1780 /* Load the method info from the AOT file */
1783 flags = decode_value (p, &p);
1784 has_generic_jit_info = (flags & 1) != 0;
1785 has_dwarf_unwind_info = (flags & 2) != 0;
1786 has_clauses = (flags & 4) != 0;
1787 has_seq_points = (flags & 8) != 0;
1788 from_llvm = (flags & 16) != 0;
1789 has_try_block_holes = (flags & 32) != 0;
1790 has_gc_map = (flags & 64) != 0;
1792 if (has_dwarf_unwind_info) {
1795 offset = decode_value (p, &p);
1796 g_assert (offset < (1 << 30));
1797 used_int_regs = offset;
1799 used_int_regs = decode_value (p, &p);
1801 if (has_generic_jit_info)
1802 generic_info_size = sizeof (MonoGenericJitInfo);
1804 generic_info_size = 0;
1806 if (has_try_block_holes) {
1807 num_holes = decode_value (p, &p);
1808 try_holes_info_size = sizeof (MonoTryBlockHoleTableJitInfo) + num_holes * sizeof (MonoTryBlockHoleJitInfo);
1810 num_holes = try_holes_info_size = 0;
1812 /* Exception table */
1814 num_clauses = decode_value (p, &p);
1819 MonoJitExceptionInfo *clauses;
1823 * Part of the info is encoded by the AOT compiler, the rest is in the .eh_frame
1826 clauses = g_new0 (MonoJitExceptionInfo, num_clauses);
1827 nesting = g_new0 (GSList*, num_clauses);
1829 for (i = 0; i < num_clauses; ++i) {
1830 MonoJitExceptionInfo *ei = &clauses [i];
1832 ei->flags = decode_value (p, &p);
1834 if (decode_value (p, &p))
1835 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
1837 /* Read the list of nesting clauses */
1839 int nesting_index = decode_value (p, &p);
1840 if (nesting_index == -1)
1842 nesting [i] = g_slist_prepend (nesting [i], GINT_TO_POINTER (nesting_index));
1846 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);
1847 jinfo->from_llvm = 1;
1850 for (i = 0; i < num_clauses; ++i)
1851 g_slist_free (nesting [i]);
1855 mono_domain_alloc0 (domain, MONO_SIZEOF_JIT_INFO + (sizeof (MonoJitExceptionInfo) * num_clauses) + generic_info_size + try_holes_info_size);
1856 jinfo->num_clauses = num_clauses;
1858 for (i = 0; i < jinfo->num_clauses; ++i) {
1859 MonoJitExceptionInfo *ei = &jinfo->clauses [i];
1861 ei->flags = decode_value (p, &p);
1863 ei->exvar_offset = decode_value (p, &p);
1865 if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER || ei->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
1866 ei->data.filter = code + decode_value (p, &p);
1868 if (decode_value (p, &p))
1869 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
1872 ei->try_start = code + decode_value (p, &p);
1873 ei->try_end = code + decode_value (p, &p);
1874 ei->handler_start = code + decode_value (p, &p);
1877 jinfo->code_size = code_len;
1878 jinfo->used_regs = used_int_regs;
1879 jinfo->method = method;
1880 jinfo->code_start = code;
1881 jinfo->domain_neutral = 0;
1882 jinfo->from_aot = 1;
1885 if (has_generic_jit_info) {
1886 MonoGenericJitInfo *gi;
1888 jinfo->has_generic_jit_info = 1;
1890 gi = mono_jit_info_get_generic_jit_info (jinfo);
1894 gi->has_this = this_reg != -1;
1895 gi->this_reg = this_reg;
1896 gi->this_offset = this_offset;
1898 gi->has_this = decode_value (p, &p);
1899 gi->this_reg = decode_value (p, &p);
1900 gi->this_offset = decode_value (p, &p);
1903 /* This currently contains no data */
1904 gi->generic_sharing_context = g_new0 (MonoGenericSharingContext, 1);
1906 jinfo->method = decode_resolve_method_ref (amodule, p, &p);
1909 if (has_try_block_holes) {
1910 MonoTryBlockHoleTableJitInfo *table;
1912 jinfo->has_try_block_holes = 1;
1914 table = mono_jit_info_get_try_block_hole_table_info (jinfo);
1917 table->num_holes = (guint16)num_holes;
1918 for (i = 0; i < num_holes; ++i) {
1919 MonoTryBlockHoleJitInfo *hole = &table->holes [i];
1920 hole->clause = decode_value (p, &p);
1921 hole->length = decode_value (p, &p);
1922 hole->offset = decode_value (p, &p);
1926 if (has_seq_points) {
1927 MonoSeqPointInfo *seq_points;
1928 int il_offset, native_offset, last_il_offset, last_native_offset, j;
1930 int len = decode_value (p, &p);
1932 seq_points = g_malloc0 (sizeof (MonoSeqPointInfo) + (len - MONO_ZERO_LEN_ARRAY) * sizeof (SeqPoint));
1933 seq_points->len = len;
1934 last_il_offset = last_native_offset = 0;
1935 for (i = 0; i < len; ++i) {
1936 SeqPoint *sp = &seq_points->seq_points [i];
1937 il_offset = last_il_offset + decode_value (p, &p);
1938 native_offset = last_native_offset + decode_value (p, &p);
1940 sp->il_offset = il_offset;
1941 sp->native_offset = native_offset;
1943 sp->next_len = decode_value (p, &p);
1944 sp->next = g_new (int, sp->next_len);
1945 for (j = 0; j < sp->next_len; ++j)
1946 sp->next [j] = decode_value (p, &p);
1948 last_il_offset = il_offset;
1949 last_native_offset = native_offset;
1952 mono_domain_lock (domain);
1953 g_hash_table_insert (domain_jit_info (domain)->seq_points, method, seq_points);
1954 mono_domain_unlock (domain);
1957 /* Load debug info */
1958 buf_len = decode_value (p, &p);
1959 mono_debug_add_aot_method (domain, method, code, p, buf_len);
1963 int map_size = decode_value (p, &p);
1964 /* The GC map requires 4 bytes of alignment */
1965 while ((guint64)(gsize)p % 4)
1971 if (amodule != jinfo->method->klass->image->aot_module) {
1974 ji_to_amodule = g_hash_table_new (NULL, NULL);
1975 g_hash_table_insert (ji_to_amodule, jinfo, amodule);
1983 * mono_aot_get_unwind_info:
1985 * Return a pointer to the DWARF unwind info belonging to JI.
1988 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
1990 MonoAotModule *amodule = ji->method->klass->image->aot_module;
1992 guint8 *code = ji->code_start;
1995 g_assert (ji->from_aot);
1997 if (!(code >= amodule->code && code <= amodule->code_end)) {
1998 /* ji belongs to a different aot module than amodule */
2000 g_assert (ji_to_amodule);
2001 amodule = g_hash_table_lookup (ji_to_amodule, ji);
2003 g_assert (code >= amodule->code && code <= amodule->code_end);
2007 p = amodule->unwind_info + ji->used_regs;
2008 *unwind_info_len = decode_value (p, &p);
2012 static G_GNUC_UNUSED int
2013 compare_ints (const void *a, const void *b)
2015 return *(gint32*)a - *(gint32*)b;
2019 msort_code_offsets_internal (gint32 *array, int lo, int hi, gint32 *scratch)
2021 int mid = (lo + hi) / 2;
2028 for (i = lo; i < hi; ++i)
2029 if (array [(i * 2)] > array [(i * 2) + 2])
2032 /* Already sorted */
2036 msort_code_offsets_internal (array, lo, mid, scratch);
2037 msort_code_offsets_internal (array, mid + 1, hi, scratch);
2039 if (array [mid * 2] < array [(mid + 1) * 2])
2045 for (i = lo; i <= hi; i ++) {
2046 if (t_lo <= mid && ((t_hi > hi) || array [t_lo * 2] < array [t_hi * 2])) {
2047 scratch [(i * 2)] = array [t_lo * 2];
2048 scratch [(i * 2) + 1] = array [(t_lo *2) + 1];
2051 scratch [(i * 2)] = array [t_hi * 2];
2052 scratch [(i * 2) + 1] = array [(t_hi *2) + 1];
2056 for (i = lo; i <= hi; ++i) {
2057 array [(i * 2)] = scratch [i * 2];
2058 array [(i * 2) + 1] = scratch [(i * 2) + 1];
2063 msort_code_offsets (gint32 *array, int len)
2067 scratch = g_new (gint32, len * 2);
2068 msort_code_offsets_internal (array, 0, len - 1, scratch);
2073 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
2075 int pos, left, right, offset, offset1, offset2, code_len;
2076 int method_index, table_len, is_wrapper;
2078 MonoAotModule *amodule = image->aot_module;
2081 guint8 *code, *ex_info, *p;
2083 int nmethods = amodule->info.nmethods;
2084 gint32 *code_offsets;
2090 if (domain != mono_get_root_domain ())
2094 offset = (guint8*)addr - amodule->code;
2096 /* Compute a sorted table mapping code offsets to method indexes. */
2097 if (!amodule->sorted_code_offsets) {
2098 code_offsets = g_new0 (gint32, nmethods * 2);
2100 for (i = 0; i < nmethods; ++i) {
2101 /* Skip the -1 entries to speed up sorting */
2102 if (amodule->code_offsets [i] == 0xffffffff)
2104 code_offsets [(offsets_len * 2)] = amodule->code_offsets [i];
2105 code_offsets [(offsets_len *2) + 1] = i;
2108 /* Use a merge sort as this is mostly sorted */
2109 msort_code_offsets (code_offsets, offsets_len);
2110 //qsort (code_offsets, offsets_len, sizeof (gint32) * 2, compare_ints);
2111 for (i = 0; i < offsets_len -1; ++i)
2112 g_assert (code_offsets [(i * 2)] <= code_offsets [(i + 1) * 2]);
2114 if (InterlockedCompareExchangePointer ((gpointer*)&amodule->sorted_code_offsets, code_offsets, NULL) != NULL)
2115 /* Somebody got in before us */
2116 g_free (code_offsets);
2117 amodule->sorted_code_offsets_len = offsets_len;
2120 code_offsets = amodule->sorted_code_offsets;
2121 offsets_len = amodule->sorted_code_offsets_len;
2123 /* Binary search in the sorted_code_offsets table */
2125 right = offsets_len;
2127 pos = (left + right) / 2;
2129 offset1 = code_offsets [(pos * 2)];
2130 if (pos + 1 == offsets_len)
2131 offset2 = amodule->code_end - amodule->code;
2133 offset2 = code_offsets [(pos + 1) * 2];
2135 if (offset < offset1)
2137 else if (offset >= offset2)
2143 g_assert (offset >= code_offsets [(pos * 2)]);
2144 if (pos + 1 < offsets_len)
2145 g_assert (offset < code_offsets [((pos + 1) * 2)]);
2146 method_index = code_offsets [(pos * 2) + 1];
2148 code = &amodule->code [amodule->code_offsets [method_index]];
2149 ex_info = &amodule->blob [mono_aot_get_offset (amodule->ex_info_offsets, method_index)];
2151 if (pos == offsets_len - 1)
2152 code_len = amodule->code_end - code;
2154 code_len = code_offsets [(pos + 1) * 2] - code_offsets [pos * 2];
2156 g_assert ((guint8*)code <= (guint8*)addr && (guint8*)addr < (guint8*)code + code_len);
2158 /* Might be a wrapper/extra method */
2159 if (amodule->extra_methods) {
2161 method = g_hash_table_lookup (amodule->extra_methods, GUINT_TO_POINTER (method_index));
2168 if (method_index >= image->tables [MONO_TABLE_METHOD].rows) {
2170 * This is hit for extra methods which are called directly, so they are
2171 * not in amodule->extra_methods.
2173 table_len = amodule->extra_method_info_offsets [0];
2174 table = amodule->extra_method_info_offsets + 1;
2181 pos = ((left + right) / 2);
2183 g_assert (pos < table_len);
2185 if (table [pos * 2] < method_index)
2187 else if (table [pos * 2] > method_index)
2193 p = amodule->blob + table [(pos * 2) + 1];
2194 is_wrapper = decode_value (p, &p);
2195 g_assert (!is_wrapper);
2196 method = decode_resolve_method_ref (amodule, p, &p);
2199 token = mono_metadata_make_token (MONO_TABLE_METHOD, method_index + 1);
2200 method = mono_get_method (image, token, NULL);
2207 //printf ("F: %s\n", mono_method_full_name (method, TRUE));
2209 jinfo = decode_exception_debug_info (amodule, domain, method, ex_info, addr, code, code_len);
2211 g_assert ((guint8*)addr >= (guint8*)jinfo->code_start);
2212 g_assert ((guint8*)addr < (guint8*)jinfo->code_start + jinfo->code_size);
2214 /* Add it to the normal JitInfo tables */
2215 mono_jit_info_table_add (domain, jinfo);
2221 decode_patch (MonoAotModule *aot_module, MonoMemPool *mp, MonoJumpInfo *ji, guint8 *buf, guint8 **endbuf)
2229 case MONO_PATCH_INFO_METHOD:
2230 case MONO_PATCH_INFO_METHOD_JUMP:
2231 case MONO_PATCH_INFO_ICALL_ADDR:
2232 case MONO_PATCH_INFO_METHOD_RGCTX: {
2236 res = decode_method_ref (aot_module, &ref, p, &p);
2240 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)) {
2241 ji->data.target = mono_create_ftnptr (mono_domain_get (), mono_create_jit_trampoline_from_token (ref.image, ref.token));
2242 ji->type = MONO_PATCH_INFO_ABS;
2246 ji->data.method = ref.method;
2248 ji->data.method = mono_get_method (ref.image, ref.token, NULL);
2249 g_assert (ji->data.method);
2250 mono_class_init (ji->data.method->klass);
2254 case MONO_PATCH_INFO_INTERNAL_METHOD:
2255 case MONO_PATCH_INFO_JIT_ICALL_ADDR: {
2256 guint32 len = decode_value (p, &p);
2258 ji->data.name = (char*)p;
2262 case MONO_PATCH_INFO_METHODCONST:
2264 ji->data.method = decode_resolve_method_ref (aot_module, p, &p);
2265 if (!ji->data.method)
2268 case MONO_PATCH_INFO_VTABLE:
2269 case MONO_PATCH_INFO_CLASS:
2270 case MONO_PATCH_INFO_IID:
2271 case MONO_PATCH_INFO_ADJUSTED_IID:
2273 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2274 if (!ji->data.klass)
2277 case MONO_PATCH_INFO_CLASS_INIT:
2278 case MONO_PATCH_INFO_DELEGATE_TRAMPOLINE:
2279 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2280 if (!ji->data.klass)
2283 case MONO_PATCH_INFO_IMAGE:
2284 ji->data.image = load_image (aot_module, decode_value (p, &p), TRUE);
2285 if (!ji->data.image)
2288 case MONO_PATCH_INFO_FIELD:
2289 case MONO_PATCH_INFO_SFLDA:
2291 ji->data.field = decode_field_info (aot_module, p, &p);
2292 if (!ji->data.field)
2295 case MONO_PATCH_INFO_SWITCH:
2296 ji->data.table = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoBBTable));
2297 ji->data.table->table_size = decode_value (p, &p);
2298 table = mono_domain_alloc (mono_domain_get (), sizeof (gpointer) * ji->data.table->table_size);
2299 ji->data.table->table = (MonoBasicBlock**)table;
2300 for (i = 0; i < ji->data.table->table_size; i++)
2301 table [i] = (gpointer)(gssize)decode_value (p, &p);
2303 case MONO_PATCH_INFO_R4: {
2306 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (float));
2307 val = decode_value (p, &p);
2308 *(float*)ji->data.target = *(float*)&val;
2311 case MONO_PATCH_INFO_R8: {
2315 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (double));
2317 val [0] = decode_value (p, &p);
2318 val [1] = decode_value (p, &p);
2319 v = ((guint64)val [1] << 32) | ((guint64)val [0]);
2320 *(double*)ji->data.target = *(double*)&v;
2323 case MONO_PATCH_INFO_LDSTR:
2324 image = load_image (aot_module, decode_value (p, &p), TRUE);
2327 ji->data.token = mono_jump_info_token_new (mp, image, MONO_TOKEN_STRING + decode_value (p, &p));
2329 case MONO_PATCH_INFO_RVA:
2330 case MONO_PATCH_INFO_DECLSEC:
2331 case MONO_PATCH_INFO_LDTOKEN:
2332 case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
2334 image = load_image (aot_module, decode_value (p, &p), TRUE);
2337 ji->data.token = mono_jump_info_token_new (mp, image, decode_value (p, &p));
2339 ji->data.token->has_context = decode_value (p, &p);
2340 if (ji->data.token->has_context) {
2341 gboolean res = decode_generic_context (aot_module, &ji->data.token->context, p, &p);
2346 case MONO_PATCH_INFO_EXC_NAME:
2347 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2348 if (!ji->data.klass)
2350 ji->data.name = ji->data.klass->name;
2352 case MONO_PATCH_INFO_METHOD_REL:
2353 ji->data.offset = decode_value (p, &p);
2355 case MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG:
2356 case MONO_PATCH_INFO_GENERIC_CLASS_INIT:
2357 case MONO_PATCH_INFO_MONITOR_ENTER:
2358 case MONO_PATCH_INFO_MONITOR_EXIT:
2359 case MONO_PATCH_INFO_GC_CARD_TABLE_ADDR:
2360 case MONO_PATCH_INFO_CASTCLASS_CACHE:
2362 case MONO_PATCH_INFO_RGCTX_FETCH: {
2364 MonoJumpInfoRgctxEntry *entry;
2366 entry = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
2367 entry->method = decode_resolve_method_ref (aot_module, p, &p);
2368 entry->in_mrgctx = decode_value (p, &p);
2369 entry->info_type = decode_value (p, &p);
2370 entry->data = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
2371 entry->data->type = decode_value (p, &p);
2373 res = decode_patch (aot_module, mp, entry->data, p, &p);
2376 ji->data.rgctx_entry = entry;
2379 case MONO_PATCH_INFO_SEQ_POINT_INFO:
2381 case MONO_PATCH_INFO_LLVM_IMT_TRAMPOLINE: {
2382 MonoJumpInfoImtTramp *imt_tramp = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoImtTramp));
2384 imt_tramp->method = decode_resolve_method_ref (aot_module, p, &p);
2385 imt_tramp->vt_offset = decode_value (p, &p);
2387 ji->data.imt_tramp = imt_tramp;
2391 g_warning ("unhandled type %d", ji->type);
2392 g_assert_not_reached ();
2403 static MonoJumpInfo*
2404 load_patch_info (MonoAotModule *aot_module, MonoMemPool *mp, int n_patches,
2405 guint32 **got_slots,
2406 guint8 *buf, guint8 **endbuf)
2408 MonoJumpInfo *patches;
2414 patches = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo) * n_patches);
2416 *got_slots = g_malloc (sizeof (guint32) * n_patches);
2418 for (pindex = 0; pindex < n_patches; ++pindex) {
2419 MonoJumpInfo *ji = &patches [pindex];
2424 got_offset = decode_value (p, &p);
2426 if (aot_module->got [got_offset]) {
2427 /* Already loaded */
2428 //printf ("HIT!\n");
2430 shared_p = aot_module->blob + mono_aot_get_offset (aot_module->got_info_offsets, got_offset);
2432 ji->type = decode_value (shared_p, &shared_p);
2434 res = decode_patch (aot_module, mp, ji, shared_p, &shared_p);
2439 (*got_slots) [pindex] = got_offset;
2446 g_free (*got_slots);
2453 register_jump_target_got_slot (MonoDomain *domain, MonoMethod *method, gpointer *got_slot)
2456 * Jump addresses cannot be patched by the trampoline code since it
2457 * does not have access to the caller's address. Instead, we collect
2458 * the addresses of the GOT slots pointing to a method, and patch
2459 * them after the method has been compiled.
2461 MonoJitDomainInfo *info = domain_jit_info (domain);
2464 mono_domain_lock (domain);
2465 if (!info->jump_target_got_slot_hash)
2466 info->jump_target_got_slot_hash = g_hash_table_new (NULL, NULL);
2467 list = g_hash_table_lookup (info->jump_target_got_slot_hash, method);
2468 list = g_slist_prepend (list, got_slot);
2469 g_hash_table_insert (info->jump_target_got_slot_hash, method, list);
2470 mono_domain_unlock (domain);
2476 * Load the method identified by METHOD_INDEX from the AOT image. Return a
2477 * pointer to the native code of the method, or NULL if not found.
2478 * METHOD might not be set if the caller only has the image/token info.
2481 load_method (MonoDomain *domain, MonoAotModule *amodule, MonoImage *image, MonoMethod *method, guint32 token, int method_index)
2484 gboolean from_plt = method == NULL;
2486 int i, pindex, n_patches, used_strings;
2487 gboolean keep_patches = TRUE;
2489 MonoJitInfo *jinfo = NULL;
2490 guint8 *code, *info;
2492 if (mono_profiler_get_events () & MONO_PROFILE_ENTER_LEAVE)
2495 if ((domain != mono_get_root_domain ()) && (!(amodule->info.opts & MONO_OPT_SHARED)))
2496 /* Non shared AOT code can't be used in other appdomains */
2499 if (amodule->out_of_date)
2502 if (amodule->code_offsets [method_index] == 0xffffffff) {
2503 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
2507 method = mono_get_method (image, token, NULL);
2508 full_name = mono_method_full_name (method, TRUE);
2509 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.\n", full_name);
2515 code = &amodule->code [amodule->code_offsets [method_index]];
2517 info = &amodule->blob [mono_aot_get_offset (amodule->method_info_offsets, method_index)];
2519 if (amodule->thumb_end && code < amodule->thumb_end) {
2520 /* Convert this into a thumb address */
2521 g_assert ((amodule->code_offsets [method_index] & 0x1) == 0);
2522 code = &amodule->code [amodule->code_offsets [method_index] + 1];
2526 if (!amodule->methods_loaded)
2527 amodule->methods_loaded = g_new0 (guint32, amodule->info.nmethods + 1);
2530 if ((amodule->methods_loaded [method_index / 32] >> (method_index % 32)) & 0x1)
2533 if (mono_last_aot_method != -1) {
2534 if (mono_jit_stats.methods_aot >= mono_last_aot_method)
2536 else if (mono_jit_stats.methods_aot == mono_last_aot_method - 1) {
2538 method = mono_get_method (image, token, NULL);
2540 char *name = mono_method_full_name (method, TRUE);
2541 printf ("LAST AOT METHOD: %s.\n", name);
2544 printf ("LAST AOT METHOD: %p %d\n", code, method_index);
2552 klass = method->klass;
2553 decode_klass_ref (amodule, p, &p);
2555 klass = decode_klass_ref (amodule, p, &p);
2558 if (amodule->info.opts & MONO_OPT_SHARED)
2559 used_strings = decode_value (p, &p);
2563 for (i = 0; i < used_strings; i++) {
2564 guint token = decode_value (p, &p);
2565 mono_ldstr (mono_get_root_domain (), image, mono_metadata_token_index (token));
2568 if (amodule->info.opts & MONO_OPT_SHARED)
2569 keep_patches = FALSE;
2571 n_patches = decode_value (p, &p);
2573 keep_patches = FALSE;
2576 MonoJumpInfo *patches;
2582 mp = mono_mempool_new ();
2584 patches = load_patch_info (amodule, mp, n_patches, &got_slots, p, &p);
2585 if (patches == NULL)
2588 for (pindex = 0; pindex < n_patches; ++pindex) {
2589 MonoJumpInfo *ji = &patches [pindex];
2591 if (!amodule->got [got_slots [pindex]]) {
2592 amodule->got [got_slots [pindex]] = mono_resolve_patch_target (method, domain, code, ji, TRUE);
2593 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
2594 amodule->got [got_slots [pindex]] = mono_create_ftnptr (domain, amodule->got [got_slots [pindex]]);
2595 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
2596 register_jump_target_got_slot (domain, ji->data.method, &(amodule->got [got_slots [pindex]]));
2598 ji->type = MONO_PATCH_INFO_NONE;
2604 mono_mempool_destroy (mp);
2607 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
2611 method = mono_get_method (image, token, NULL);
2613 full_name = mono_method_full_name (method, TRUE);
2616 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
2618 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT FOUND method %s [%p - %p %p]\n", full_name, code, code + jinfo->code_size, info);
2624 mono_jit_stats.methods_aot++;
2626 amodule->methods_loaded [method_index / 32] |= 1 << (method_index % 32);
2630 if (method && method->wrapper_type)
2631 g_hash_table_insert (amodule->method_to_code, method, code);
2635 if (mono_profiler_get_events () & MONO_PROFILE_JIT_COMPILATION) {
2639 method = mono_get_method (image, token, NULL);
2642 mono_profiler_method_jit (method);
2643 jinfo = mono_jit_info_table_find (domain, (char*)code);
2645 mono_profiler_method_end_jit (method, jinfo, MONO_PROFILE_OK);
2648 if (from_plt && klass && !klass->generic_container)
2649 mono_runtime_class_init (mono_class_vtable (domain, klass));
2654 /* FIXME: The space in domain->mp is wasted */
2655 if (amodule->info.opts & MONO_OPT_SHARED)
2656 /* No need to cache patches */
2657 mono_mempool_destroy (mp);
2666 find_extra_method_in_amodule (MonoAotModule *amodule, MonoMethod *method, const char *name)
2668 guint32 table_size, entry_size, hash;
2669 guint32 *table, *entry;
2671 static guint32 n_extra_decodes;
2676 table_size = amodule->extra_method_table [0];
2677 table = amodule->extra_method_table + 1;
2680 hash = mono_aot_method_hash (method) % table_size;
2682 entry = &table [hash * entry_size];
2689 guint32 key = entry [0];
2690 guint32 value = entry [1];
2691 guint32 next = entry [entry_size - 1];
2694 int is_wrapper_name;
2696 p = amodule->blob + key;
2697 is_wrapper_name = decode_value (p, &p);
2698 if (is_wrapper_name) {
2699 int wrapper_type = decode_value (p, &p);
2700 if (wrapper_type == method->wrapper_type && !strcmp (name, (char*)p)) {
2708 if (!amodule->method_ref_to_method)
2709 amodule->method_ref_to_method = g_hash_table_new (NULL, NULL);
2710 m = g_hash_table_lookup (amodule->method_ref_to_method, p);
2713 m = decode_resolve_method_ref_with_target (amodule, method, p, &p);
2716 g_hash_table_insert (amodule->method_ref_to_method, orig_p, m);
2725 /* Special case: wrappers of shared generic methods */
2726 if (m && method->wrapper_type && m->wrapper_type == m->wrapper_type &&
2727 method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
2728 MonoMethod *w1 = mono_marshal_method_from_wrapper (method);
2729 MonoMethod *w2 = mono_marshal_method_from_wrapper (m);
2731 if (w1->is_inflated && ((MonoMethodInflated *)w1)->declaring == w2) {
2737 /* Methods decoded needlessly */
2739 //printf ("%d %s %s %p\n", n_extra_decodes, mono_method_full_name (method, TRUE), mono_method_full_name (m, TRUE), orig_p);
2745 entry = &table [next * entry_size];
2754 add_module_cb (gpointer key, gpointer value, gpointer user_data)
2756 g_ptr_array_add ((GPtrArray*)user_data, value);
2760 * find_extra_method:
2762 * Try finding METHOD in the extra_method table in all AOT images.
2763 * Return its method index, or 0xffffff if not found. Set OUT_AMODULE to the AOT
2764 * module where the method was found.
2767 find_extra_method (MonoMethod *method, MonoAotModule **out_amodule)
2774 if (method->wrapper_type)
2775 name = mono_aot_wrapper_name (method);
2777 /* Try the method's module first */
2778 *out_amodule = method->klass->image->aot_module;
2779 index = find_extra_method_in_amodule (method->klass->image->aot_module, method, name);
2780 if (index != 0xffffff) {
2786 * Try all other modules.
2787 * This is needed because generic instances klass->image points to the image
2788 * containing the generic definition, but the native code is generated to the
2789 * AOT image which contains the reference.
2792 /* Make a copy to avoid doing the search inside the aot lock */
2793 modules = g_ptr_array_new ();
2795 g_hash_table_foreach (aot_modules, add_module_cb, modules);
2799 for (i = 0; i < modules->len; ++i) {
2800 MonoAotModule *amodule = g_ptr_array_index (modules, i);
2802 if (amodule != method->klass->image->aot_module)
2803 index = find_extra_method_in_amodule (amodule, method, name);
2804 if (index != 0xffffff) {
2805 *out_amodule = amodule;
2810 g_ptr_array_free (modules, TRUE);
2817 * mono_aot_get_method:
2819 * Return a pointer to the AOTed native code for METHOD if it can be found,
2821 * On platforms with function pointers, this doesn't return a function pointer.
2824 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
2826 MonoClass *klass = method->klass;
2827 guint32 method_index;
2828 MonoAotModule *amodule = klass->image->aot_module;
2834 if (amodule->out_of_date)
2837 if ((method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
2838 (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
2839 (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
2840 (method->flags & METHOD_ATTRIBUTE_ABSTRACT))
2844 * Use the original method instead of its invoke-with-check wrapper.
2845 * This is not a problem when using full-aot, since it doesn't support
2848 if (mono_aot_only && method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)
2849 return mono_aot_get_method (domain, mono_marshal_method_from_wrapper (method));
2851 g_assert (klass->inited);
2853 /* Find method index */
2854 if (method->is_inflated && mono_method_is_generic_sharable_impl_full (method, FALSE, FALSE)) {
2856 * For generic methods, we store the fully shared instance in place of the
2859 method = mono_method_get_declaring_generic_method (method);
2860 method_index = mono_metadata_token_index (method->token) - 1;
2861 } else if (method->is_inflated || !method->token) {
2862 /* This hash table is used to avoid the slower search in the extra_method_table in the AOT image */
2864 code = g_hash_table_lookup (amodule->method_to_code, method);
2869 method_index = find_extra_method (method, &amodule);
2871 * Special case the ICollection<T> wrappers for arrays, as they cannot
2872 * be statically enumerated, and each wrapper ends up calling the same
2875 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED && method->klass->rank && strstr (method->name, "System.Collections.Generic")) {
2876 MonoMethod *m = mono_aot_get_array_helper_from_wrapper (method);
2878 code = mono_aot_get_method (domain, m);
2880 if (mono_method_needs_static_rgctx_invoke (m, FALSE)) {
2881 code = mono_create_static_rgctx_trampoline (m, mono_create_ftnptr (domain, code));
2882 /* The call above returns an ftnptr */
2883 code = mono_get_addr_from_ftnptr (code);
2891 * Special case Array.GetGenericValueImpl which is a generic icall.
2892 * Generic sharing currently can't handle it, but the icall returns data using
2893 * an out parameter, so the managed-to-native wrappers can share the same code.
2895 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass == mono_defaults.array_class && !strcmp (method->name, "GetGenericValueImpl")) {
2897 MonoGenericContext ctx;
2898 MonoType *args [16];
2900 if (mono_method_signature (method)->params [1]->type == MONO_TYPE_OBJECT)
2901 /* Avoid recursion */
2904 m = mono_class_get_method_from_name (mono_defaults.array_class, "GetGenericValueImpl", 2);
2907 memset (&ctx, 0, sizeof (ctx));
2908 args [0] = &mono_defaults.object_class->byval_arg;
2909 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
2911 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method (m, &ctx), TRUE, TRUE);
2914 * Get the code for the <object> instantiation which should be emitted into
2915 * the mscorlib aot image by the AOT compiler.
2917 code = mono_aot_get_method (domain, m);
2922 /* Same for CompareExchange<T> */
2923 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") && MONO_TYPE_IS_REFERENCE (mono_method_signature (method)->params [1])) {
2925 MonoGenericContext ctx;
2926 MonoType *args [16];
2927 gpointer iter = NULL;
2929 while ((m = mono_class_get_methods (method->klass, &iter))) {
2930 if (mono_method_signature (m)->generic_param_count && !strcmp (m->name, "CompareExchange"))
2935 memset (&ctx, 0, sizeof (ctx));
2936 args [0] = &mono_defaults.object_class->byval_arg;
2937 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
2939 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method (m, &ctx), TRUE, TRUE);
2941 /* Avoid recursion */
2946 * Get the code for the <object> instantiation which should be emitted into
2947 * the mscorlib aot image by the AOT compiler.
2949 code = mono_aot_get_method (domain, m);
2954 if (method_index == 0xffffff && method->is_inflated && mono_method_is_generic_sharable_impl_full (method, FALSE, TRUE)) {
2955 /* Partial sharing */
2956 method_index = find_extra_method (mini_get_shared_method (method), &amodule);
2959 if (method_index == 0xffffff) {
2960 if (mono_aot_only && mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
2963 full_name = mono_method_full_name (method, TRUE);
2964 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.\n", full_name);
2970 if (method_index == 0xffffff)
2973 /* Needed by find_jit_info */
2975 if (!amodule->extra_methods)
2976 amodule->extra_methods = g_hash_table_new (NULL, NULL);
2977 g_hash_table_insert (amodule->extra_methods, GUINT_TO_POINTER (method_index), method);
2981 method_index = mono_metadata_token_index (method->token) - 1;
2984 return load_method (domain, amodule, klass->image, method, method->token, method_index);
2988 * Same as mono_aot_get_method, but we try to avoid loading any metadata from the
2992 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
2994 MonoAotModule *aot_module = image->aot_module;
3000 method_index = mono_metadata_token_index (token) - 1;
3002 return load_method (domain, aot_module, image, NULL, token, method_index);
3008 } IsGotEntryUserData;
3011 check_is_got_entry (gpointer key, gpointer value, gpointer user_data)
3013 IsGotEntryUserData *data = (IsGotEntryUserData*)user_data;
3014 MonoAotModule *aot_module = (MonoAotModule*)value;
3016 if (aot_module->got && (data->addr >= (guint8*)(aot_module->got)) && (data->addr < (guint8*)(aot_module->got + aot_module->info.got_size)))
3021 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
3023 IsGotEntryUserData user_data;
3028 user_data.addr = addr;
3029 user_data.res = FALSE;
3031 g_hash_table_foreach (aot_modules, check_is_got_entry, &user_data);
3034 return user_data.res;
3039 MonoAotModule *module;
3040 } FindAotModuleUserData;
3043 find_aot_module_cb (gpointer key, gpointer value, gpointer user_data)
3045 FindAotModuleUserData *data = (FindAotModuleUserData*)user_data;
3046 MonoAotModule *aot_module = (MonoAotModule*)value;
3048 if ((data->addr >= (guint8*)(aot_module->code)) && (data->addr < (guint8*)(aot_module->code_end)))
3049 data->module = aot_module;
3052 static inline MonoAotModule*
3053 find_aot_module (guint8 *code)
3055 FindAotModuleUserData user_data;
3060 /* Reading these need no locking */
3061 if (((gsize)code < aot_code_low_addr) || ((gsize)code > aot_code_high_addr))
3064 user_data.addr = code;
3065 user_data.module = NULL;
3068 g_hash_table_foreach (aot_modules, find_aot_module_cb, &user_data);
3071 return user_data.module;
3075 mono_aot_patch_plt_entry (guint8 *code, gpointer *got, mgreg_t *regs, guint8 *addr)
3078 * Since AOT code is only used in the root domain,
3079 * mono_domain_get () != mono_get_root_domain () means the calling method
3080 * is AppDomain:InvokeInDomain, so this is the same check as in
3081 * mono_method_same_domain () but without loading the metadata for the method.
3083 if (mono_domain_get () == mono_get_root_domain ())
3084 mono_arch_patch_plt_entry (code, got, regs, addr);
3088 * mono_aot_plt_resolve:
3090 * This function is called by the entries in the PLT to resolve the actual method that
3091 * needs to be called. It returns a trampoline to the method and patches the PLT entry.
3092 * Returns NULL if the something cannot be loaded.
3095 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
3097 #ifdef MONO_ARCH_AOT_SUPPORTED
3098 guint8 *p, *target, *plt_entry;
3100 MonoAotModule *module = (MonoAotModule*)aot_module;
3101 gboolean res, no_ftnptr = FALSE;
3104 //printf ("DYN: %p %d\n", aot_module, plt_info_offset);
3106 p = &module->blob [plt_info_offset];
3108 ji.type = decode_value (p, &p);
3110 mp = mono_mempool_new_size (512);
3111 res = decode_patch (module, mp, &ji, p, &p);
3114 mono_mempool_destroy (mp);
3119 * Avoid calling resolve_patch_target in the full-aot case if possible, since
3120 * it would create a trampoline, and we don't need that.
3121 * We could do this only if the method does not need the special handling
3122 * in mono_magic_trampoline ().
3124 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) &&
3125 !mono_method_needs_static_rgctx_invoke (ji.data.method, FALSE)) {
3126 target = mono_jit_compile_method (ji.data.method);
3129 target = mono_resolve_patch_target (NULL, mono_domain_get (), NULL, &ji, TRUE);
3133 * The trampoline expects us to return a function descriptor on platforms which use
3134 * it, but resolve_patch_target returns a direct function pointer for some type of
3135 * patches, so have to translate between the two.
3136 * FIXME: Clean this up, but how ?
3138 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) {
3139 /* These should already have a function descriptor */
3140 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3141 /* Our function descriptors have a 0 environment, gcc created ones don't */
3142 if (ji.type != MONO_PATCH_INFO_INTERNAL_METHOD && ji.type != MONO_PATCH_INFO_JIT_ICALL_ADDR && ji.type != MONO_PATCH_INFO_ICALL_ADDR)
3143 g_assert (((gpointer*)target) [2] == 0);
3146 } else if (!no_ftnptr) {
3147 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3148 g_assert (((gpointer*)target) [2] != 0);
3150 target = mono_create_ftnptr (mono_domain_get (), target);
3153 mono_mempool_destroy (mp);
3155 /* Patch the PLT entry with target which might be the actual method not a trampoline */
3156 plt_entry = mono_aot_get_plt_entry (code);
3157 g_assert (plt_entry);
3158 mono_aot_patch_plt_entry (plt_entry, module->got, NULL, target);
3162 g_assert_not_reached ();
3170 * Initialize the PLT table of the AOT module. Called lazily when the first AOT
3171 * method in the module is loaded to avoid committing memory by writing to it.
3172 * LOCKING: Assumes the AOT lock is held.
3175 init_plt (MonoAotModule *amodule)
3180 if (amodule->plt_inited)
3183 tramp = mono_create_specific_trampoline (amodule, MONO_TRAMPOLINE_AOT_PLT, mono_get_root_domain (), NULL);
3186 * Initialize the PLT entries in the GOT to point to the default targets.
3189 tramp = mono_create_ftnptr (mono_domain_get (), tramp);
3190 for (i = 1; i < amodule->info.plt_size; ++i)
3191 /* All the default entries point to the AOT trampoline */
3192 ((gpointer*)amodule->got)[amodule->info.plt_got_offset_base + i] = tramp;
3194 amodule->plt_inited = TRUE;
3198 * mono_aot_get_plt_entry:
3200 * Return the address of the PLT entry called by the code at CODE if exists.
3203 mono_aot_get_plt_entry (guint8 *code)
3205 MonoAotModule *amodule = find_aot_module (code);
3206 guint8 *target = NULL;
3212 if (amodule->thumb_end && code < amodule->thumb_end) {
3213 return mono_arm_get_thumb_plt_entry (code);
3217 #ifdef MONO_ARCH_AOT_SUPPORTED
3218 target = mono_arch_get_call_target (code);
3220 g_assert_not_reached ();
3223 if ((target >= (guint8*)(amodule->plt)) && (target < (guint8*)(amodule->plt_end)))
3230 * mono_aot_get_plt_info_offset:
3232 * Return the PLT info offset belonging to the plt entry called by CODE.
3235 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
3237 guint8 *plt_entry = mono_aot_get_plt_entry (code);
3239 g_assert (plt_entry);
3241 /* The offset is embedded inside the code after the plt entry */
3242 #ifdef MONO_ARCH_AOT_SUPPORTED
3243 return mono_arch_get_plt_info_offset (plt_entry, regs, code);
3245 g_assert_not_reached ();
3251 mono_create_ftnptr_malloc (guint8 *code)
3253 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3254 MonoPPCFunctionDescriptor *ftnptr = g_malloc0 (sizeof (MonoPPCFunctionDescriptor));
3256 ftnptr->code = code;
3267 * mono_aot_register_jit_icall:
3269 * Register a JIT icall which is called by trampolines in full-aot mode. This should
3270 * be called from mono_arch_init () during startup.
3273 mono_aot_register_jit_icall (const char *name, gpointer addr)
3275 /* No need for locking */
3276 if (!aot_jit_icall_hash)
3277 aot_jit_icall_hash = g_hash_table_new (g_str_hash, g_str_equal);
3278 g_hash_table_insert (aot_jit_icall_hash, (char*)name, addr);
3284 * Load the function named NAME from the aot image.
3287 load_function (MonoAotModule *amodule, const char *name)
3291 int n_patches, pindex;
3297 symbol = g_strdup_printf ("%s", name);
3298 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&code);
3301 g_error ("Symbol '%s' not found in AOT file '%s'.\n", name, amodule->aot_name);
3303 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT FOUND function '%s' in AOT file '%s'.\n", name, amodule->aot_name);
3307 symbol = g_strdup_printf ("%s_p", name);
3308 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&p);
3311 /* Nothing to patch */
3314 p = amodule->blob + *(guint32*)p;
3316 /* Similar to mono_aot_load_method () */
3318 n_patches = decode_value (p, &p);
3321 MonoJumpInfo *patches;
3324 mp = mono_mempool_new ();
3326 patches = load_patch_info (amodule, mp, n_patches, &got_slots, p, &p);
3329 for (pindex = 0; pindex < n_patches; ++pindex) {
3330 MonoJumpInfo *ji = &patches [pindex];
3333 if (amodule->got [got_slots [pindex]])
3337 * When this code is executed, the runtime may not be initalized yet, so
3338 * resolve the patch info by hand.
3340 if (ji->type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
3341 if (!strcmp (ji->data.name, "mono_get_lmf_addr")) {
3342 target = mono_get_lmf_addr;
3343 } else if (!strcmp (ji->data.name, "mono_thread_force_interruption_checkpoint")) {
3344 target = mono_thread_force_interruption_checkpoint;
3345 } else if (!strcmp (ji->data.name, "mono_exception_from_token")) {
3346 target = mono_exception_from_token;
3347 } else if (!strcmp (ji->data.name, "mono_throw_exception")) {
3348 target = mono_get_throw_exception ();
3349 } else if (strstr (ji->data.name, "trampoline_func_") == ji->data.name) {
3350 int tramp_type2 = atoi (ji->data.name + strlen ("trampoline_func_"));
3351 target = (gpointer)mono_get_trampoline_func (tramp_type2);
3352 } else if (strstr (ji->data.name, "specific_trampoline_lazy_fetch_") == ji->data.name) {
3353 /* atoll is needed because the the offset is unsigned */
3357 res = sscanf (ji->data.name, "specific_trampoline_lazy_fetch_%u", &slot);
3358 g_assert (res == 1);
3359 target = mono_create_specific_trampoline (GUINT_TO_POINTER (slot), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, mono_get_root_domain (), NULL);
3360 target = mono_create_ftnptr_malloc (target);
3361 } else if (!strcmp (ji->data.name, "specific_trampoline_monitor_enter")) {
3362 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_MONITOR_ENTER, mono_get_root_domain (), NULL);
3363 target = mono_create_ftnptr_malloc (target);
3364 } else if (!strcmp (ji->data.name, "specific_trampoline_monitor_exit")) {
3365 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_MONITOR_EXIT, mono_get_root_domain (), NULL);
3366 target = mono_create_ftnptr_malloc (target);
3367 } else if (!strcmp (ji->data.name, "specific_trampoline_generic_class_init")) {
3368 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_GENERIC_CLASS_INIT, mono_get_root_domain (), NULL);
3369 target = mono_create_ftnptr_malloc (target);
3370 } else if (!strcmp (ji->data.name, "mono_thread_get_and_clear_pending_exception")) {
3371 target = mono_thread_get_and_clear_pending_exception;
3372 } else if (strstr (ji->data.name, "generic_trampoline_")) {
3373 target = mono_aot_get_trampoline (ji->data.name);
3374 } else if (aot_jit_icall_hash && g_hash_table_lookup (aot_jit_icall_hash, ji->data.name)) {
3375 /* Registered by mono_arch_init () */
3376 target = g_hash_table_lookup (aot_jit_icall_hash, ji->data.name);
3378 fprintf (stderr, "Unknown relocation '%s'\n", ji->data.name);
3379 g_assert_not_reached ();
3383 /* Hopefully the code doesn't have patches which need method or
3386 target = mono_resolve_patch_target (NULL, NULL, code, ji, FALSE);
3390 amodule->got [got_slots [pindex]] = target;
3395 mono_mempool_destroy (mp);
3402 * Return the trampoline identified by NAME from the mscorlib AOT file.
3403 * On ppc64, this returns a function descriptor.
3406 mono_aot_get_trampoline (const char *name)
3409 MonoAotModule *amodule;
3411 image = mono_defaults.corlib;
3414 amodule = image->aot_module;
3417 return mono_create_ftnptr_malloc (load_function (amodule, name));
3420 /* Return a given kind of trampoline */
3422 get_numerous_trampoline (MonoAotTrampoline tramp_type, int n_got_slots, MonoAotModule **out_amodule, guint32 *got_offset, guint32 *out_tramp_size)
3424 MonoAotModule *amodule;
3425 int index, tramp_size;
3428 /* Currently, we keep all trampolines in the mscorlib AOT image */
3429 image = mono_defaults.corlib;
3434 amodule = image->aot_module;
3437 *out_amodule = amodule;
3439 if (amodule->trampoline_index [tramp_type] == amodule->info.num_trampolines [tramp_type])
3440 g_error ("Ran out of trampolines of type %d in '%s' (%d)\n", tramp_type, image->name, amodule->info.num_trampolines [tramp_type]);
3442 index = amodule->trampoline_index [tramp_type] ++;
3446 *got_offset = amodule->info.trampoline_got_offset_base [tramp_type] + (index * n_got_slots);
3448 tramp_size = amodule->info.trampoline_size [tramp_type];
3451 *out_tramp_size = tramp_size;
3453 return amodule->trampolines [tramp_type] + (index * tramp_size);
3457 * Return a specific trampoline from the AOT file.
3460 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
3462 MonoAotModule *amodule;
3463 guint32 got_offset, tramp_size;
3464 guint8 *code, *tramp;
3465 static gpointer generic_trampolines [MONO_TRAMPOLINE_NUM];
3466 static gboolean inited;
3467 static guint32 num_trampolines;
3473 mono_counters_register ("Specific trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &num_trampolines);
3482 if (!generic_trampolines [tramp_type]) {
3485 symbol = mono_get_generic_trampoline_name (tramp_type);
3486 generic_trampolines [tramp_type] = mono_aot_get_trampoline (symbol);
3490 tramp = generic_trampolines [tramp_type];
3493 code = get_numerous_trampoline (MONO_AOT_TRAMP_SPECIFIC, 2, &amodule, &got_offset, &tramp_size);
3495 amodule->got [got_offset] = tramp;
3496 amodule->got [got_offset + 1] = arg1;
3499 *code_len = tramp_size;
3505 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
3507 MonoAotModule *amodule;
3511 code = get_numerous_trampoline (MONO_AOT_TRAMP_STATIC_RGCTX, 2, &amodule, &got_offset, NULL);
3513 amodule->got [got_offset] = ctx;
3514 amodule->got [got_offset + 1] = addr;
3516 /* The caller expects an ftnptr */
3517 return mono_create_ftnptr (mono_domain_get (), code);
3521 mono_aot_get_unbox_trampoline (MonoMethod *method)
3523 guint32 method_index = mono_metadata_token_index (method->token) - 1;
3524 MonoAotModule *amodule;
3528 if (method->is_inflated && !mono_method_is_generic_sharable_impl (method, FALSE)) {
3529 guint32 index = find_extra_method (method, &amodule);
3530 g_assert (index != 0xffffff);
3532 symbol = g_strdup_printf ("ut_e_%d", index);
3534 amodule = method->klass->image->aot_module;
3537 symbol = g_strdup_printf ("ut_%d", method_index);
3539 code = load_function (amodule, symbol);
3542 /* The caller expects an ftnptr */
3543 return mono_create_ftnptr (mono_domain_get (), code);
3547 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
3552 symbol = mono_get_rgctx_fetch_trampoline_name (slot);
3553 code = load_function (mono_defaults.corlib->aot_module, symbol);
3555 /* The caller expects an ftnptr */
3556 return mono_create_ftnptr (mono_domain_get (), code);
3560 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
3565 int i, index, real_count;
3566 MonoAotModule *amodule;
3568 code = get_numerous_trampoline (MONO_AOT_TRAMP_IMT_THUNK, 1, &amodule, &got_offset, NULL);
3571 for (i = 0; i < count; ++i) {
3572 MonoIMTCheckItem *item = imt_entries [i];
3574 if (item->is_equals)
3578 /* Save the entries into an array */
3579 buf = mono_domain_alloc (domain, (real_count + 1) * 2 * sizeof (gpointer));
3581 for (i = 0; i < count; ++i) {
3582 MonoIMTCheckItem *item = imt_entries [i];
3584 if (!item->is_equals)
3587 g_assert (item->key);
3589 g_assert (!item->has_target_code);
3591 buf [(index * 2)] = item->key;
3592 buf [(index * 2) + 1] = &(vtable->vtable [item->value.vtable_slot]);
3595 buf [(index * 2)] = NULL;
3596 buf [(index * 2) + 1] = fail_tramp;
3598 amodule->got [got_offset] = buf;
3604 * mono_aot_set_make_unreadable:
3606 * Set whenever to make all mmaped memory unreadable. In conjuction with a
3607 * SIGSEGV handler, this is useful to find out which pages the runtime tries to read.
3610 mono_aot_set_make_unreadable (gboolean unreadable)
3614 make_unreadable = unreadable;
3616 if (make_unreadable && !inited) {
3617 mono_counters_register ("AOT pagefaults", MONO_COUNTER_JIT | MONO_COUNTER_INT, &n_pagefaults);
3622 MonoAotModule *module;
3627 find_map (gpointer key, gpointer value, gpointer user_data)
3629 MonoAotModule *module = (MonoAotModule*)value;
3630 FindMapUserData *data = (FindMapUserData*)user_data;
3633 if ((data->ptr >= module->mem_begin) && (data->ptr < module->mem_end))
3634 data->module = module;
3637 static MonoAotModule*
3638 find_module_for_addr (void *ptr)
3640 FindMapUserData data;
3642 if (!make_unreadable)
3646 data.ptr = (guint8*)ptr;
3649 g_hash_table_foreach (aot_modules, (GHFunc)find_map, &data);
3656 * mono_aot_is_pagefault:
3658 * Should be called from a SIGSEGV signal handler to find out whenever @ptr is
3659 * within memory allocated by this module.
3662 mono_aot_is_pagefault (void *ptr)
3664 if (!make_unreadable)
3668 * Not signal safe, but SIGSEGV's are synchronous, and
3669 * this is only turned on by a MONO_DEBUG option.
3671 return find_module_for_addr (ptr) != NULL;
3675 * mono_aot_handle_pagefault:
3677 * Handle a pagefault caused by an unreadable page by making it readable again.
3680 mono_aot_handle_pagefault (void *ptr)
3682 #ifndef PLATFORM_WIN32
3683 guint8* start = (guint8*)ROUND_DOWN (((gssize)ptr), mono_pagesize ());
3687 res = mono_mprotect (start, mono_pagesize (), MONO_MMAP_READ|MONO_MMAP_WRITE|MONO_MMAP_EXEC);
3688 g_assert (res == 0);
3699 mono_aot_init (void)
3704 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
3710 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
3716 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
3722 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
3728 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
3734 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
3740 mono_aot_get_plt_entry (guint8 *code)
3746 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
3752 mono_aot_patch_plt_entry (guint8 *code, gpointer *got, mgreg_t *regs, guint8 *addr)
3757 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
3763 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
3765 g_assert_not_reached ();
3771 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
3773 g_assert_not_reached ();
3778 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
3780 g_assert_not_reached ();
3785 mono_aot_get_trampoline (const char *name)
3787 g_assert_not_reached ();
3792 mono_aot_get_unbox_trampoline (MonoMethod *method)
3794 g_assert_not_reached ();
3799 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
3801 g_assert_not_reached ();
3806 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
3808 g_assert_not_reached ();
3813 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
3815 g_assert_not_reached ();
3820 mono_aot_register_jit_icall (const char *name, gpointer addr)