2 * aot-runtime.c: mono Ahead of Time compiler
5 * Dietmar Maurer (dietmar@ximian.com)
6 * Zoltan Varga (vargaz@gmail.com)
8 * (C) 2002 Ximian, Inc.
12 #include <sys/types.h>
18 #ifdef HAVE_SYS_MMAN_H
27 #ifdef HAVE_EXECINFO_H
34 #ifdef HAVE_SYS_WAIT_H
35 #include <sys/wait.h> /* for WIFEXITED, WEXITSTATUS */
38 #ifdef HAVE_DL_ITERATE_PHDR
42 #include <mono/metadata/tabledefs.h>
43 #include <mono/metadata/class.h>
44 #include <mono/metadata/object.h>
45 #include <mono/metadata/tokentype.h>
46 #include <mono/metadata/appdomain.h>
47 #include <mono/metadata/debug-helpers.h>
48 #include <mono/metadata/assembly.h>
49 #include <mono/metadata/metadata-internals.h>
50 #include <mono/metadata/marshal.h>
51 #include <mono/metadata/gc-internal.h>
52 #include <mono/metadata/monitor.h>
53 #include <mono/metadata/threads-types.h>
54 #include <mono/utils/mono-logger-internal.h>
55 #include <mono/utils/mono-mmap.h>
56 #include "mono/utils/mono-compiler.h"
57 #include <mono/utils/mono-counters.h>
65 #define SHARED_EXT ".dll"
66 #elif ((defined(__ppc__) || defined(__powerpc__) || defined(__ppc64__)) || defined(__MACH__)) && !defined(__linux__)
67 #define SHARED_EXT ".dylib"
69 #define SHARED_EXT ".so"
72 #define ALIGN_PTR_TO(ptr,align) (gpointer)((((gssize)(ptr)) + (align - 1)) & (~(align - 1)))
73 #define ROUND_DOWN(VALUE,SIZE) ((VALUE) & ~((SIZE) - 1))
75 typedef struct MonoAotModule {
77 /* Pointer to the Global Offset Table */
79 GHashTable *name_cache;
80 GHashTable *extra_methods;
81 /* Maps methods to their code */
82 GHashTable *method_to_code;
83 /* Maps pointers into the method info to the methods themselves */
84 GHashTable *method_ref_to_method;
85 MonoAssemblyName *image_names;
87 MonoAssembly *assembly;
88 MonoImage **image_table;
89 guint32 image_table_len;
100 /* This contains <offset, index> pairs sorted by offset */
101 /* This is needed because LLVM emitted methods can be in any order */
102 gint32 *sorted_code_offsets;
103 gint32 sorted_code_offsets_len;
104 guint32 *method_info_offsets;
105 guint32 *got_info_offsets;
106 guint32 *ex_info_offsets;
107 guint32 *class_info_offsets;
108 guint32 *methods_loaded;
109 guint16 *class_name_table;
110 guint32 *extra_method_table;
111 guint32 *extra_method_info_offsets;
114 /* Points to the GNU .eh_frame_hdr section, if it exists */
115 guint8 *eh_frame_hdr;
117 /* Points to the trampolines */
118 guint8 *trampolines [MONO_AOT_TRAMP_NUM];
119 /* The first unused trampoline of each kind */
120 guint32 trampoline_index [MONO_AOT_TRAMP_NUM];
122 MonoAotFileInfo info;
128 static GHashTable *aot_modules;
129 #define mono_aot_lock() EnterCriticalSection (&aot_mutex)
130 #define mono_aot_unlock() LeaveCriticalSection (&aot_mutex)
131 static CRITICAL_SECTION aot_mutex;
134 * Maps assembly names to the mono_aot_module_<NAME>_info symbols in the
135 * AOT modules registered by mono_aot_register_module ().
137 static GHashTable *static_aot_modules;
140 * Maps MonoJitInfo* to the aot module they belong to, this can be different
141 * from ji->method->klass->image's aot module for generic instances.
143 static GHashTable *ji_to_amodule;
146 * Whenever to AOT compile loaded assemblies on demand and store them in
147 * a cache under $HOME/.mono/aot-cache.
149 static gboolean use_aot_cache = FALSE;
152 * Whenever to spawn a new process to AOT a file or do it in-process. Only relevant if
153 * use_aot_cache is TRUE.
155 static gboolean spawn_compiler = TRUE;
158 static gint32 mono_last_aot_method = -1;
160 static gboolean make_unreadable = FALSE;
161 static guint32 name_table_accesses = 0;
162 static guint32 n_pagefaults = 0;
164 /* Used to speed-up find_aot_module () */
165 static gsize aot_code_low_addr = (gssize)-1;
166 static gsize aot_code_high_addr = 0;
169 init_plt (MonoAotModule *info);
171 /*****************************************************/
173 /*****************************************************/
178 * Load one of the images referenced by AMODULE. Returns NULL if the image is not
179 * found, and sets the loader error if SET_ERROR is TRUE.
182 load_image (MonoAotModule *amodule, int index, gboolean set_error)
184 MonoAssembly *assembly;
185 MonoImageOpenStatus status;
187 g_assert (index < amodule->image_table_len);
189 if (amodule->image_table [index])
190 return amodule->image_table [index];
191 if (amodule->out_of_date)
194 assembly = mono_assembly_load (&amodule->image_names [index], NULL, &status);
196 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);
197 amodule->out_of_date = TRUE;
200 char *full_name = mono_stringify_assembly_name (&amodule->image_names [index]);
201 mono_loader_set_error_assembly_load (full_name, FALSE);
207 if (strcmp (assembly->image->guid, amodule->image_guids [index])) {
208 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is out of date (Older than dependency %s).\n", amodule->aot_name, amodule->image_names [index].name);
209 amodule->out_of_date = TRUE;
213 amodule->image_table [index] = assembly->image;
214 return assembly->image;
218 decode_value (guint8 *ptr, guint8 **rptr)
223 if ((b & 0x80) == 0){
226 } else if ((b & 0x40) == 0){
227 len = ((b & 0x3f) << 8 | ptr [1]);
229 } else if (b != 0xff) {
230 len = ((b & 0x1f) << 24) |
237 len = (ptr [1] << 24) | (ptr [2] << 16) | (ptr [3] << 8) | ptr [4];
243 //printf ("DECODE: %d.\n", len);
248 * mono_aot_get_method:
250 * Decode an offset table emitted by emit_offset_table (), returning the INDEXth
254 mono_aot_get_offset (guint32 *table, int index)
256 int i, group, ngroups, index_entry_size;
257 int start_offset, offset, noffsets, group_size;
258 guint8 *data_start, *p;
259 guint32 *index32 = NULL;
260 guint16 *index16 = NULL;
262 noffsets = table [0];
263 group_size = table [1];
265 index_entry_size = table [3];
266 group = index / group_size;
268 if (index_entry_size == 2) {
269 index16 = (guint16*)&table [4];
270 data_start = (guint8*)&index16 [ngroups];
271 p = data_start + index16 [group];
273 index32 = (guint32*)&table [4];
274 data_start = (guint8*)&index32 [ngroups];
275 p = data_start + index32 [group];
278 /* offset will contain the value of offsets [group * group_size] */
279 offset = start_offset = decode_value (p, &p);
280 for (i = group * group_size + 1; i <= index; ++i) {
281 offset += decode_value (p, &p);
284 //printf ("Offset lookup: %d -> %d, start=%d, p=%d\n", index, offset, start_offset, table [3 + group]);
290 decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf);
293 decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf);
295 static MonoGenericInst*
296 decode_generic_inst (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
299 MonoType **type_argv;
300 MonoGenericInst *inst;
303 type_argc = decode_value (p, &p);
304 type_argv = g_new0 (MonoType*, type_argc);
306 for (i = 0; i < type_argc; ++i) {
307 MonoClass *pclass = decode_klass_ref (module, p, &p);
312 type_argv [i] = &pclass->byval_arg;
315 inst = mono_metadata_get_generic_inst (type_argc, type_argv);
324 decode_generic_context (MonoAotModule *module, MonoGenericContext *ctx, guint8 *buf, guint8 **endbuf)
326 gboolean has_class_inst, has_method_inst;
329 has_class_inst = decode_value (p, &p);
330 if (has_class_inst) {
331 ctx->class_inst = decode_generic_inst (module, p, &p);
332 if (!ctx->class_inst)
335 has_method_inst = decode_value (p, &p);
336 if (has_method_inst) {
337 ctx->method_inst = decode_generic_inst (module, p, &p);
338 if (!ctx->method_inst)
347 decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
350 MonoClass *klass, *eklass;
354 token = decode_value (p, &p);
359 if (mono_metadata_token_table (token) == 0) {
360 image = load_image (module, decode_value (p, &p), TRUE);
363 klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF + token);
364 } else if (mono_metadata_token_table (token) == MONO_TABLE_TYPESPEC) {
365 if (token == MONO_TOKEN_TYPE_SPEC) {
366 MonoTypeEnum type = decode_value (p, &p);
368 if (type == MONO_TYPE_GENERICINST) {
370 MonoGenericContext ctx;
373 gclass = decode_klass_ref (module, p, &p);
376 g_assert (gclass->generic_container);
378 memset (&ctx, 0, sizeof (ctx));
379 ctx.class_inst = decode_generic_inst (module, p, &p);
382 type = mono_class_inflate_generic_type (&gclass->byval_arg, &ctx);
383 klass = mono_class_from_mono_type (type);
384 mono_metadata_free_type (type);
385 } else if ((type == MONO_TYPE_VAR) || (type == MONO_TYPE_MVAR)) {
387 MonoGenericContainer *container;
389 int num = decode_value (p, &p);
390 gboolean is_method = decode_value (p, &p);
393 MonoMethod *method_def;
394 g_assert (type == MONO_TYPE_MVAR);
395 method_def = decode_resolve_method_ref (module, p, &p);
399 container = mono_method_get_generic_container (method_def);
401 MonoClass *class_def;
402 g_assert (type == MONO_TYPE_VAR);
403 class_def = decode_klass_ref (module, p, &p);
407 container = class_def->generic_container;
410 g_assert (container);
412 // FIXME: Memory management
413 t = g_new0 (MonoType, 1);
415 t->data.generic_param = mono_generic_container_get_param (container, num);
417 // FIXME: Maybe use types directly to avoid
418 // the overhead of creating MonoClass-es
419 klass = mono_class_from_mono_type (t);
423 g_assert_not_reached ();
426 image = load_image (module, decode_value (p, &p), TRUE);
429 klass = mono_class_get (image, token);
431 } else if (token == MONO_TOKEN_TYPE_DEF) {
433 image = load_image (module, decode_value (p, &p), TRUE);
436 rank = decode_value (p, &p);
437 eklass = decode_klass_ref (module, p, &p);
438 klass = mono_array_class_get (eklass, rank);
440 g_assert_not_reached ();
448 static MonoClassField*
449 decode_field_info (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
451 MonoClass *klass = decode_klass_ref (module, buf, &buf);
458 token = MONO_TOKEN_FIELD_DEF + decode_value (p, &p);
462 return mono_class_get_field (klass, token);
466 * can_method_ref_match_method:
468 * Determine if calling decode_resolve_method_ref on P could return the same method as
469 * METHOD. This is an optimization to avoid calling decode_resolve_method_ref () which
470 * would create MonoMethods which are not needed etc.
473 can_method_ref_match_method (MonoAotModule *module, guint8 *buf, MonoMethod *method)
476 guint32 image_index, value;
478 /* Keep this in sync with decode_method_ref () */
479 value = decode_value (p, &p);
480 image_index = value >> 24;
482 if (image_index == MONO_AOT_METHODREF_WRAPPER) {
483 guint32 wrapper_type;
485 if (!method->wrapper_type)
488 wrapper_type = decode_value (p, &p);
490 if (method->wrapper_type != wrapper_type)
492 } else if (image_index == MONO_AOT_METHODREF_WRAPPER_NAME) {
494 } else if (image_index < MONO_AOT_METHODREF_MIN || image_index == MONO_AOT_METHODREF_METHODSPEC || image_index == MONO_AOT_METHODREF_GINST) {
495 if (method->wrapper_type)
505 * Decode a method reference, and return its image and token. This avoids loading
506 * metadata for the method if the caller does not need it. If the method has no token,
507 * then it is loaded from metadata and METHOD is set to the method instance.
510 decode_method_ref (MonoAotModule *module, guint32 *token, MonoMethod **method, gboolean *no_aot_trampoline, guint8 *buf, guint8 **endbuf)
512 guint32 image_index, value;
513 MonoImage *image = NULL;
518 if (no_aot_trampoline)
519 *no_aot_trampoline = FALSE;
521 value = decode_value (p, &p);
522 image_index = value >> 24;
524 if (image_index == MONO_AOT_METHODREF_NO_AOT_TRAMPOLINE) {
525 if (no_aot_trampoline)
526 *no_aot_trampoline = TRUE;
527 value = decode_value (p, &p);
528 image_index = value >> 24;
531 if (image_index == MONO_AOT_METHODREF_WRAPPER) {
532 guint32 wrapper_type;
534 wrapper_type = decode_value (p, &p);
537 image = mono_defaults.corlib;
539 switch (wrapper_type) {
540 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK: {
541 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
545 mono_class_init (m->klass);
546 *method = mono_marshal_get_remoting_invoke_with_check (m);
549 case MONO_WRAPPER_PROXY_ISINST: {
550 MonoClass *klass = decode_klass_ref (module, p, &p);
553 *method = mono_marshal_get_proxy_cancast (klass);
556 case MONO_WRAPPER_LDFLD:
557 case MONO_WRAPPER_LDFLDA:
558 case MONO_WRAPPER_STFLD:
559 case MONO_WRAPPER_ISINST: {
560 MonoClass *klass = decode_klass_ref (module, p, &p);
563 if (wrapper_type == MONO_WRAPPER_LDFLD)
564 *method = mono_marshal_get_ldfld_wrapper (&klass->byval_arg);
565 else if (wrapper_type == MONO_WRAPPER_LDFLDA)
566 *method = mono_marshal_get_ldflda_wrapper (&klass->byval_arg);
567 else if (wrapper_type == MONO_WRAPPER_STFLD)
568 *method = mono_marshal_get_stfld_wrapper (&klass->byval_arg);
569 else if (wrapper_type == MONO_WRAPPER_ISINST)
570 *method = mono_marshal_get_isinst (klass);
572 g_assert_not_reached ();
575 case MONO_WRAPPER_LDFLD_REMOTE:
576 *method = mono_marshal_get_ldfld_remote_wrapper (NULL);
578 case MONO_WRAPPER_STFLD_REMOTE:
579 *method = mono_marshal_get_stfld_remote_wrapper (NULL);
581 case MONO_WRAPPER_ALLOC: {
582 int atype = decode_value (p, &p);
584 *method = mono_gc_get_managed_allocator_by_type (atype);
587 case MONO_WRAPPER_WRITE_BARRIER:
588 *method = mono_gc_get_write_barrier ();
590 case MONO_WRAPPER_STELEMREF:
591 *method = mono_marshal_get_stelemref ();
593 case MONO_WRAPPER_SYNCHRONIZED: {
594 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
598 *method = mono_marshal_get_synchronized_wrapper (m);
601 case MONO_WRAPPER_UNKNOWN: {
602 MonoMethodDesc *desc;
603 MonoMethod *orig_method;
604 int subtype = decode_value (p, &p);
606 if (subtype == MONO_AOT_WRAPPER_MONO_ENTER)
607 desc = mono_method_desc_new ("Monitor:Enter", FALSE);
608 else if (subtype == MONO_AOT_WRAPPER_MONO_EXIT)
609 desc = mono_method_desc_new ("Monitor:Exit", FALSE);
611 g_assert_not_reached ();
612 orig_method = mono_method_desc_search_in_class (desc, mono_defaults.monitor_class);
613 g_assert (orig_method);
614 mono_method_desc_free (desc);
615 *method = mono_monitor_get_fast_path (orig_method);
618 case MONO_WRAPPER_RUNTIME_INVOKE: {
620 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
624 *method = mono_marshal_get_runtime_invoke (m, FALSE);
627 case MONO_WRAPPER_MANAGED_TO_MANAGED: {
628 int subtype = decode_value (p, &p);
630 if (subtype == MONO_AOT_WRAPPER_ELEMENT_ADDR) {
631 int rank = decode_value (p, &p);
632 int elem_size = decode_value (p, &p);
634 *method = mono_marshal_get_array_address (rank, elem_size);
636 g_assert_not_reached ();
641 g_assert_not_reached ();
643 } else if (image_index == MONO_AOT_METHODREF_WRAPPER_NAME) {
644 /* Can't decode these */
645 g_assert_not_reached ();
646 } else if (image_index == MONO_AOT_METHODREF_METHODSPEC) {
647 image_index = decode_value (p, &p);
648 *token = decode_value (p, &p);
650 image = load_image (module, image_index, TRUE);
653 } else if (image_index == MONO_AOT_METHODREF_GINST) {
655 MonoGenericContext ctx;
658 * These methods do not have a token which resolves them, so we
659 * resolve them immediately.
661 klass = decode_klass_ref (module, p, &p);
665 image_index = decode_value (p, &p);
666 *token = decode_value (p, &p);
668 image = load_image (module, image_index, TRUE);
672 *method = mono_get_method_full (image, *token, NULL, NULL);
676 memset (&ctx, 0, sizeof (ctx));
678 if (FALSE && klass->generic_class) {
679 ctx.class_inst = klass->generic_class->context.class_inst;
680 ctx.method_inst = NULL;
682 *method = mono_class_inflate_generic_method_full (*method, klass, &ctx);
685 memset (&ctx, 0, sizeof (ctx));
687 if (!decode_generic_context (module, &ctx, p, &p))
690 *method = mono_class_inflate_generic_method_full (*method, klass, &ctx);
691 } else if (image_index == MONO_AOT_METHODREF_ARRAY) {
695 klass = decode_klass_ref (module, p, &p);
698 method_type = decode_value (p, &p);
700 switch (method_type) {
702 *method = mono_class_get_method_from_name (klass, ".ctor", klass->rank);
705 *method = mono_class_get_method_from_name (klass, ".ctor", klass->rank * 2);
708 *method = mono_class_get_method_from_name (klass, "Get", -1);
711 *method = mono_class_get_method_from_name (klass, "Address", -1);
714 *method = mono_class_get_method_from_name (klass, "Set", -1);
717 g_assert_not_reached ();
720 g_assert (image_index < MONO_AOT_METHODREF_MIN);
721 *token = MONO_TOKEN_METHOD_DEF | (value & 0xffffff);
723 image = load_image (module, image_index, TRUE);
734 * decode_resolve_method_ref:
736 * Similar to decode_method_ref, but resolve and return the method itself.
739 decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
743 MonoImage *image = decode_method_ref (module, &token, &method, NULL, buf, endbuf);
749 method = mono_get_method (image, token, NULL);
754 create_cache_structure (void)
760 home = g_get_home_dir ();
764 tmp = g_build_filename (home, ".mono", NULL);
765 if (!g_file_test (tmp, G_FILE_TEST_IS_DIR)) {
766 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT creating directory %s", tmp);
770 err = mkdir (tmp, 0777);
773 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed: %s", g_strerror (errno));
779 tmp = g_build_filename (home, ".mono", "aot-cache", NULL);
780 if (!g_file_test (tmp, G_FILE_TEST_IS_DIR)) {
781 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT creating directory %s", tmp);
785 err = mkdir (tmp, 0777);
788 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed: %s", g_strerror (errno));
797 * load_aot_module_from_cache:
799 * Experimental code to AOT compile loaded assemblies on demand.
802 * - Add environment variable MONO_AOT_CACHE_OPTIONS
803 * - Add options for controlling the cache size
804 * - Handle full cache by deleting old assemblies lru style
805 * - Add options for excluding assemblies during development
806 * - Maybe add a threshold after an assembly is AOT compiled
807 * - invoking a new mono process is a security risk
808 * - recompile the AOT module if one of its dependencies changes
811 load_aot_module_from_cache (MonoAssembly *assembly, char **aot_name)
813 char *fname, *cmd, *tmp2, *aot_options;
822 if (assembly->image->dynamic)
825 create_cache_structure ();
827 home = g_get_home_dir ();
829 tmp2 = g_strdup_printf ("%s-%s%s", assembly->image->assembly_name, assembly->image->guid, SHARED_EXT);
830 fname = g_build_filename (home, ".mono", "aot-cache", tmp2, NULL);
834 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT trying to load from cache: '%s'.", fname);
835 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
838 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT not found.");
840 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT precompiling assembly '%s'... ", assembly->image->name);
842 aot_options = g_strdup_printf ("outfile=%s", fname);
844 if (spawn_compiler) {
845 /* FIXME: security */
846 /* FIXME: Has to pass the assembly loading path to the child process */
847 cmd = g_strdup_printf ("mono -O=all --aot=%s %s", aot_options, assembly->image->name);
849 res = g_spawn_command_line_sync (cmd, &out, &err, &exit_status, NULL);
851 #if !defined(HOST_WIN32) && !defined(__ppc__) && !defined(__ppc64__) && !defined(__powerpc__)
853 if (!WIFEXITED (exit_status) && (WEXITSTATUS (exit_status) == 0))
854 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT failed: %s.", err);
856 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT succeeded.");
863 res = mono_compile_assembly (assembly, mono_parse_default_optimizations (NULL), aot_options);
865 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT failed.");
867 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT succeeded.");
871 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
873 g_free (aot_options);
880 find_symbol (MonoDl *module, gpointer *globals, const char *name, gpointer *value)
884 guint16 *table, *entry;
888 /* The first entry points to the hash */
892 table_size = table [0];
895 hash = mono_metadata_str_hash (name) % table_size;
897 entry = &table [hash * 2];
899 /* Search the hash for the index into the globals table */
901 while (entry [0] != 0) {
902 guint32 index = entry [0] - 1;
903 guint32 next = entry [1];
905 //printf ("X: %s %s\n", (char*)globals [index * 2], name);
907 if (!strcmp (globals [index * 2], name)) {
908 global_index = index;
913 entry = &table [next * 2];
919 if (global_index != -1)
920 *value = globals [global_index * 2 + 1];
924 char *err = mono_dl_symbol (module, name, value);
931 #if defined(HAVE_DL_ITERATE_PHDR) && defined(PT_GNU_EH_FRAME)
933 dl_callback (struct dl_phdr_info *info, size_t size, void *data)
936 MonoAotModule *amodule = data;
938 if (!strcmp (amodule->aot_name, info->dlpi_name)) {
939 for (j = 0; j < info->dlpi_phnum; j++) {
940 if (info->dlpi_phdr [j].p_type == PT_GNU_EH_FRAME)
941 amodule->eh_frame_hdr = (guint8*)(info->dlpi_addr + info->dlpi_phdr [j].p_vaddr);
951 load_aot_module (MonoAssembly *assembly, gpointer user_data)
954 MonoAotModule *amodule;
956 gboolean usable = TRUE;
957 char *saved_guid = NULL;
958 char *aot_version = NULL;
959 char *runtime_version, *build_info;
960 char *opt_flags = NULL;
962 gboolean full_aot = FALSE;
963 MonoAotFileInfo *file_info = NULL;
968 if (mono_compile_aot)
971 if (assembly->image->aot_module)
973 * Already loaded. This can happen because the assembly loading code might invoke
974 * the assembly load hooks multiple times for the same assembly.
978 if (assembly->image->dynamic)
981 if (mono_security_get_mode () == MONO_SECURITY_MODE_CAS)
985 if (static_aot_modules)
986 globals = g_hash_table_lookup (static_aot_modules, assembly->aname.name);
992 /* Statically linked AOT module */
994 aot_name = g_strdup_printf ("%s", assembly->aname.name);
995 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "Found statically linked AOT module '%s'.\n", aot_name);
998 sofile = load_aot_module_from_cache (assembly, &aot_name);
1001 aot_name = g_strdup_printf ("%s%s", assembly->image->name, SHARED_EXT);
1003 sofile = mono_dl_open (aot_name, MONO_DL_LAZY, &err);
1006 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed to load AOT module %s: %s\n", aot_name, err);
1012 if (!sofile && !globals) {
1013 if (mono_aot_only) {
1014 fprintf (stderr, "Failed to load AOT module '%s' in aot-only mode.\n", aot_name);
1021 find_symbol (sofile, globals, "mono_assembly_guid", (gpointer *) &saved_guid);
1022 find_symbol (sofile, globals, "mono_aot_version", (gpointer *) &aot_version);
1023 find_symbol (sofile, globals, "mono_aot_opt_flags", (gpointer *)&opt_flags);
1024 find_symbol (sofile, globals, "mono_runtime_version", (gpointer *)&runtime_version);
1025 find_symbol (sofile, globals, "mono_aot_got_addr", (gpointer *)&got_addr);
1027 if (!aot_version || strcmp (aot_version, MONO_AOT_FILE_VERSION)) {
1028 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s has wrong file format version (expected %s got %s)\n", aot_name, MONO_AOT_FILE_VERSION, aot_version);
1032 if (!saved_guid || strcmp (assembly->image->guid, saved_guid)) {
1033 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is out of date.\n", aot_name);
1038 build_info = mono_get_runtime_build_info ();
1039 if (!runtime_version || ((strlen (runtime_version) > 0 && strcmp (runtime_version, build_info)))) {
1040 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is compiled against runtime version '%s' while this runtime has version '%s'.\n", aot_name, runtime_version, build_info);
1043 g_free (build_info);
1045 find_symbol (sofile, globals, "mono_aot_file_info", (gpointer*)&file_info);
1046 g_assert (file_info);
1048 full_aot = ((MonoAotFileInfo*)file_info)->flags & MONO_AOT_FILE_FLAG_FULL_AOT;
1050 if (mono_aot_only && !full_aot) {
1051 fprintf (stderr, "Can't use AOT image '%s' in aot-only mode because it is not compiled with --aot=full.\n", aot_name);
1054 if (!mono_aot_only && full_aot) {
1055 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is compiled with --aot=full.\n", aot_name);
1059 /* This is no longer needed, LLVM and non-LLVM runtimes should be compatible.
1060 if ((((MonoAotFileInfo*)file_info)->flags & MONO_AOT_FILE_FLAG_WITH_LLVM) && !mono_use_llvm) {
1061 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is compiled with LLVM.\n", aot_name);
1066 find_symbol (sofile, globals, "blob", (gpointer*)&blob);
1068 if (((MonoAotFileInfo*)file_info)->gc_name_index != -1) {
1069 char *gc_name = (char*)&blob [((MonoAotFileInfo*)file_info)->gc_name_index];
1070 const char *current_gc_name = mono_gc_get_gc_name ();
1072 if (strcmp (current_gc_name, gc_name) != 0) {
1073 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is compiled against GC %s, while the current runtime uses GC %s.\n", aot_name, gc_name, current_gc_name);
1079 if (mono_aot_only) {
1080 fprintf (stderr, "Failed to load AOT module '%s' while running in aot-only mode.\n", aot_name);
1083 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is unusable.\n", aot_name);
1087 mono_dl_close (sofile);
1088 assembly->image->aot_module = NULL;
1092 amodule = g_new0 (MonoAotModule, 1);
1093 amodule->aot_name = aot_name;
1094 amodule->assembly = assembly;
1096 memcpy (&amodule->info, file_info, sizeof (*file_info));
1098 amodule->got = *got_addr;
1099 amodule->got [0] = assembly->image;
1100 amodule->globals = globals;
1101 amodule->sofile = sofile;
1102 amodule->method_to_code = g_hash_table_new (mono_aligned_addr_hash, NULL);
1103 amodule->blob = blob;
1105 /* Read image table */
1107 guint32 table_len, i;
1110 find_symbol (sofile, globals, "mono_image_table", (gpointer *)&table);
1113 table_len = *(guint32*)table;
1114 table += sizeof (guint32);
1115 amodule->image_table = g_new0 (MonoImage*, table_len);
1116 amodule->image_names = g_new0 (MonoAssemblyName, table_len);
1117 amodule->image_guids = g_new0 (char*, table_len);
1118 amodule->image_table_len = table_len;
1119 for (i = 0; i < table_len; ++i) {
1120 MonoAssemblyName *aname = &(amodule->image_names [i]);
1122 aname->name = g_strdup (table);
1123 table += strlen (table) + 1;
1124 amodule->image_guids [i] = g_strdup (table);
1125 table += strlen (table) + 1;
1127 aname->culture = g_strdup (table);
1128 table += strlen (table) + 1;
1129 memcpy (aname->public_key_token, table, strlen (table) + 1);
1130 table += strlen (table) + 1;
1132 table = ALIGN_PTR_TO (table, 8);
1133 aname->flags = *(guint32*)table;
1135 aname->major = *(guint32*)table;
1137 aname->minor = *(guint32*)table;
1139 aname->build = *(guint32*)table;
1141 aname->revision = *(guint32*)table;
1146 /* Read method and method_info tables */
1147 find_symbol (sofile, globals, "code_offsets", (gpointer*)&amodule->code_offsets);
1148 find_symbol (sofile, globals, "methods", (gpointer*)&amodule->code);
1149 find_symbol (sofile, globals, "methods_end", (gpointer*)&amodule->code_end);
1150 find_symbol (sofile, globals, "method_info_offsets", (gpointer*)&amodule->method_info_offsets);
1151 find_symbol (sofile, globals, "ex_info_offsets", (gpointer*)&amodule->ex_info_offsets);
1152 find_symbol (sofile, globals, "class_info_offsets", (gpointer*)&amodule->class_info_offsets);
1153 find_symbol (sofile, globals, "class_name_table", (gpointer *)&amodule->class_name_table);
1154 find_symbol (sofile, globals, "extra_method_table", (gpointer *)&amodule->extra_method_table);
1155 find_symbol (sofile, globals, "extra_method_info_offsets", (gpointer *)&amodule->extra_method_info_offsets);
1156 find_symbol (sofile, globals, "got_info_offsets", (gpointer*)&amodule->got_info_offsets);
1157 find_symbol (sofile, globals, "specific_trampolines", (gpointer*)&(amodule->trampolines [MONO_AOT_TRAMP_SPECIFIC]));
1158 find_symbol (sofile, globals, "static_rgctx_trampolines", (gpointer*)&(amodule->trampolines [MONO_AOT_TRAMP_STATIC_RGCTX]));
1159 find_symbol (sofile, globals, "imt_thunks", (gpointer*)&(amodule->trampolines [MONO_AOT_TRAMP_IMT_THUNK]));
1160 find_symbol (sofile, globals, "unwind_info", (gpointer)&amodule->unwind_info);
1161 find_symbol (sofile, globals, "mem_end", (gpointer*)&amodule->mem_end);
1163 amodule->mem_begin = amodule->code;
1165 find_symbol (sofile, globals, "plt", (gpointer*)&amodule->plt);
1166 find_symbol (sofile, globals, "plt_end", (gpointer*)&amodule->plt_end);
1168 if (make_unreadable) {
1169 #ifndef TARGET_WIN32
1171 guint8 *page_start, *page_end;
1174 addr = amodule->mem_begin;
1175 len = amodule->mem_end - amodule->mem_begin;
1177 /* Round down in both directions to avoid modifying data which is not ours */
1178 page_start = (guint8 *) (((gssize) (addr)) & ~ (mono_pagesize () - 1)) + mono_pagesize ();
1179 page_end = (guint8 *) (((gssize) (addr + len)) & ~ (mono_pagesize () - 1));
1180 if (page_end > page_start) {
1181 err = mono_mprotect (page_start, (page_end - page_start), MONO_MMAP_NONE);
1182 g_assert (err == 0);
1189 aot_code_low_addr = MIN (aot_code_low_addr, (gsize)amodule->code);
1190 aot_code_high_addr = MAX (aot_code_high_addr, (gsize)amodule->code_end);
1192 g_hash_table_insert (aot_modules, assembly, amodule);
1195 mono_jit_info_add_aot_module (assembly->image, amodule->code, amodule->code_end);
1197 assembly->image->aot_module = amodule;
1199 #if defined(HAVE_DL_ITERATE_PHDR) && defined(PT_GNU_EH_FRAME)
1200 /* Lookup the address of the .eh_frame_hdr () section if available */
1201 dl_iterate_phdr (dl_callback, amodule);
1204 if (mono_aot_only) {
1205 if (mono_defaults.corlib) {
1206 /* The second got slot contains the mscorlib got addr */
1207 MonoAotModule *mscorlib_amodule = mono_defaults.corlib->aot_module;
1209 amodule->got [1] = mscorlib_amodule->got;
1211 amodule->got [1] = amodule->got;
1216 * Since we store methoddef and classdef tokens when referring to methods/classes in
1217 * referenced assemblies, we depend on the exact versions of the referenced assemblies.
1218 * MS calls this 'hard binding'. This means we have to load all referenced assemblies
1219 * non-lazily, since we can't handle out-of-date errors later.
1220 * The cached class info also depends on the exact assemblies.
1222 for (i = 0; i < amodule->image_table_len; ++i)
1223 load_image (amodule, i, FALSE);
1225 if (amodule->out_of_date) {
1226 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);
1227 if (mono_aot_only) {
1228 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);
1233 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT loaded AOT Module for %s.\n", assembly->image->name);
1237 * mono_aot_register_globals:
1239 * This is called by the ctor function in AOT images compiled with the
1240 * 'no-dlsym' option.
1243 mono_aot_register_globals (gpointer *globals)
1245 g_assert_not_reached ();
1249 * mono_aot_register_module:
1251 * This should be called by embedding code to register AOT modules statically linked
1252 * into the executable. AOT_INFO should be the value of the
1253 * 'mono_aot_module_<ASSEMBLY_NAME>_info' global symbol from the AOT module.
1256 mono_aot_register_module (gpointer *aot_info)
1264 /* Determine the assembly name */
1265 find_symbol (NULL, globals, "mono_aot_assembly_name", (gpointer*)&aname);
1268 /* This could be called before startup */
1272 if (!static_aot_modules)
1273 static_aot_modules = g_hash_table_new (g_str_hash, g_str_equal);
1275 g_hash_table_insert (static_aot_modules, aname, globals);
1282 mono_aot_init (void)
1284 InitializeCriticalSection (&aot_mutex);
1285 aot_modules = g_hash_table_new (NULL, NULL);
1287 mono_install_assembly_load_hook (load_aot_module, NULL);
1289 if (g_getenv ("MONO_LASTAOT"))
1290 mono_last_aot_method = atoi (g_getenv ("MONO_LASTAOT"));
1291 if (g_getenv ("MONO_AOT_CACHE"))
1292 use_aot_cache = TRUE;
1296 decode_cached_class_info (MonoAotModule *module, MonoCachedClassInfo *info, guint8 *buf, guint8 **endbuf)
1300 info->vtable_size = decode_value (buf, &buf);
1301 if (info->vtable_size == -1)
1304 flags = decode_value (buf, &buf);
1305 info->ghcimpl = (flags >> 0) & 0x1;
1306 info->has_finalize = (flags >> 1) & 0x1;
1307 info->has_cctor = (flags >> 2) & 0x1;
1308 info->has_nested_classes = (flags >> 3) & 0x1;
1309 info->blittable = (flags >> 4) & 0x1;
1310 info->has_references = (flags >> 5) & 0x1;
1311 info->has_static_refs = (flags >> 6) & 0x1;
1312 info->no_special_static_fields = (flags >> 7) & 0x1;
1313 info->is_generic_container = (flags >> 8) & 0x1;
1315 if (info->has_cctor) {
1316 MonoImage *cctor_image = decode_method_ref (module, &info->cctor_token, NULL, NULL, buf, &buf);
1320 if (info->has_finalize) {
1321 info->finalize_image = decode_method_ref (module, &info->finalize_token, NULL, NULL, buf, &buf);
1322 if (!info->finalize_image)
1326 info->instance_size = decode_value (buf, &buf);
1327 info->class_size = decode_value (buf, &buf);
1328 info->packing_size = decode_value (buf, &buf);
1329 info->min_align = decode_value (buf, &buf);
1337 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
1340 MonoClass *klass = vtable->klass;
1341 MonoAotModule *amodule = klass->image->aot_module;
1343 MonoCachedClassInfo class_info;
1347 gboolean no_aot_trampoline;
1349 if (MONO_CLASS_IS_INTERFACE (klass) || klass->rank || !amodule)
1352 info = &amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
1355 err = decode_cached_class_info (amodule, &class_info, p, &p);
1359 for (i = 0; i < slot; ++i)
1360 decode_method_ref (amodule, &token, NULL, NULL, p, &p);
1362 image = decode_method_ref (amodule, &token, NULL, &no_aot_trampoline, p, &p);
1365 if (no_aot_trampoline)
1368 if (mono_metadata_token_index (token) == 0)
1371 return mono_aot_get_method_from_token (domain, image, token);
1375 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
1377 MonoAotModule *amodule = klass->image->aot_module;
1381 if (klass->rank || !amodule)
1384 p = (guint8*)&amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
1386 err = decode_cached_class_info (amodule, res, p, &p);
1394 * mono_aot_get_class_from_name:
1396 * Obtains a MonoClass with a given namespace and a given name which is located in IMAGE,
1397 * using a cache stored in the AOT file.
1398 * Stores the resulting class in *KLASS if found, stores NULL otherwise.
1400 * Returns: TRUE if the klass was found/not found in the cache, FALSE if no aot file was
1404 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
1406 MonoAotModule *amodule = image->aot_module;
1407 guint16 *table, *entry;
1410 char full_name_buf [1024];
1412 const char *name2, *name_space2;
1414 guint32 cols [MONO_TYPEDEF_SIZE];
1415 GHashTable *nspace_table;
1417 if (!amodule || !amodule->class_name_table)
1424 /* First look in the cache */
1425 if (!amodule->name_cache)
1426 amodule->name_cache = g_hash_table_new (g_str_hash, g_str_equal);
1427 nspace_table = g_hash_table_lookup (amodule->name_cache, name_space);
1429 *klass = g_hash_table_lookup (nspace_table, name);
1436 table_size = amodule->class_name_table [0];
1437 table = amodule->class_name_table + 1;
1439 if (name_space [0] == '\0')
1440 full_name = g_strdup_printf ("%s", name);
1442 if (strlen (name_space) + strlen (name) < 1000) {
1443 sprintf (full_name_buf, "%s.%s", name_space, name);
1444 full_name = full_name_buf;
1446 full_name = g_strdup_printf ("%s.%s", name_space, name);
1449 hash = mono_metadata_str_hash (full_name) % table_size;
1450 if (full_name != full_name_buf)
1453 entry = &table [hash * 2];
1455 if (entry [0] != 0) {
1456 t = &image->tables [MONO_TABLE_TYPEDEF];
1459 guint32 index = entry [0];
1460 guint32 next = entry [1];
1461 guint32 token = mono_metadata_make_token (MONO_TABLE_TYPEDEF, index);
1463 name_table_accesses ++;
1465 mono_metadata_decode_row (t, index - 1, cols, MONO_TYPEDEF_SIZE);
1467 name2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
1468 name_space2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
1470 if (!strcmp (name, name2) && !strcmp (name_space, name_space2)) {
1472 *klass = mono_class_get (image, token);
1477 nspace_table = g_hash_table_lookup (amodule->name_cache, name_space);
1478 if (!nspace_table) {
1479 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
1480 g_hash_table_insert (amodule->name_cache, (char*)name_space2, nspace_table);
1482 g_hash_table_insert (nspace_table, (char*)name2, *klass);
1489 entry = &table [next * 2];
1501 #define DW_EH_PE_omit 0xff
1502 #define DW_EH_PE_uleb128 0x01
1503 #define DW_EH_PE_udata2 0x02
1504 #define DW_EH_PE_udata4 0x03
1505 #define DW_EH_PE_udata8 0x04
1506 #define DW_EH_PE_sleb128 0x09
1507 #define DW_EH_PE_sdata2 0x0A
1508 #define DW_EH_PE_sdata4 0x0B
1509 #define DW_EH_PE_sdata8 0x0C
1511 #define DW_EH_PE_absptr 0x00
1512 #define DW_EH_PE_pcrel 0x10
1513 #define DW_EH_PE_datarel 0x30
1514 #define DW_EH_PE_omit 0xff
1519 guint8 eh_frame_ptr_enc;
1520 guint8 fde_count_enc;
1528 * Decode the exception handling information in the .eh_frame section of the AOT
1529 * file belong to CODE, and construct a MonoJitInfo structure from it.
1530 * LOCKING: Acquires the domain lock.
1532 static G_GNUC_UNUSED MonoJitInfo*
1533 decode_eh_frame (MonoAotModule *amodule, MonoDomain *domain,
1534 MonoMethod *method, guint8 *code,
1535 MonoJitExceptionInfo *clauses, int num_clauses,
1536 int extra_size, GSList **nesting,
1537 int *this_reg, int *this_offset)
1541 guint8 *eh_frame, *unwind_info;
1542 guint32 eh_frame_ptr;
1545 int i, j, pos, left, right, offset, offset1, offset2;
1546 guint32 unw_len, code_len;
1547 MonoJitExceptionInfo *ei;
1548 guint32 ei_len, nested_len, nindex;
1549 gpointer *type_info;
1552 g_assert (amodule->eh_frame_hdr);
1554 // http://refspecs.freestandards.org/LSB_1.3.0/gLSB/gLSB/ehframehdr.html
1555 hdr = (eh_frame_hdr*)amodule->eh_frame_hdr;
1556 g_assert (hdr->version == 1);
1557 g_assert (hdr->eh_frame_ptr_enc == (DW_EH_PE_pcrel | DW_EH_PE_sdata4));
1558 g_assert (hdr->fde_count_enc == DW_EH_PE_udata4);
1559 g_assert (hdr->table_enc == (DW_EH_PE_datarel | DW_EH_PE_sdata4));
1562 eh_frame_ptr = *(guint32*)p;
1564 fde_count = *(guint32*)p;
1568 /* Binary search in the table to find the entry for code */
1569 offset = code - amodule->eh_frame_hdr;
1574 pos = (left + right) / 2;
1576 offset1 = table [(pos * 2)];
1577 if (pos + 1 == fde_count)
1579 offset2 = amodule->code_end - amodule->code;
1581 offset2 = table [(pos + 1) * 2];
1583 if (offset < offset1)
1585 else if (offset >= offset2)
1591 g_assert (code >= amodule->eh_frame_hdr + table [(pos * 2)]);
1592 if (pos + 1 < fde_count)
1593 g_assert (code < amodule->eh_frame_hdr + table [(pos * 2) + 2]);
1595 eh_frame = amodule->eh_frame_hdr + table [(pos * 2) + 1];
1597 unwind_info = mono_unwind_decode_fde (eh_frame, &unw_len, &code_len, &ei, &ei_len, &type_info, this_reg, this_offset);
1599 /* Count number of nested clauses */
1601 for (i = 0; i < ei_len; ++i) {
1602 gint32 cindex1 = *(gint32*)type_info [i];
1605 for (l = nesting [cindex1]; l; l = l->next) {
1606 gint32 nesting_cindex = GPOINTER_TO_INT (l->data);
1608 for (j = 0; j < ei_len; ++j) {
1609 gint32 cindex2 = *(gint32*)type_info [j];
1611 if (cindex2 == nesting_cindex)
1618 * LLVM might represent one IL region with multiple regions, so have to
1619 * allocate a new JI.
1622 mono_domain_alloc0 (domain, MONO_SIZEOF_JIT_INFO + (sizeof (MonoJitExceptionInfo) * (ei_len + nested_len)) + extra_size);
1624 jinfo->code_size = code_len;
1625 jinfo->used_regs = mono_cache_unwind_info (unwind_info, unw_len);
1626 jinfo->method = method;
1627 jinfo->code_start = code;
1628 jinfo->domain_neutral = 0;
1629 /* This signals that used_regs points to a normal cached unwind info */
1630 jinfo->from_aot = 0;
1631 jinfo->num_clauses = ei_len + nested_len;
1633 for (i = 0; i < ei_len; ++i) {
1635 * orig_jinfo contains the original IL exception info saved by the AOT
1636 * compiler, we have to combine that with the information produced by LLVM
1638 /* The type_info entries contain IL clause indexes */
1639 int clause_index = *(gint32*)type_info [i];
1640 MonoJitExceptionInfo *jei = &jinfo->clauses [i];
1641 MonoJitExceptionInfo *orig_jei = &clauses [clause_index];
1643 g_assert (clause_index < num_clauses);
1644 jei->flags = orig_jei->flags;
1645 jei->data.catch_class = orig_jei->data.catch_class;
1647 jei->try_start = ei [i].try_start;
1648 jei->try_end = ei [i].try_end;
1649 jei->handler_start = ei [i].handler_start;
1652 /* See exception_cb () in mini-llvm.c as to why this is needed */
1654 for (i = 0; i < ei_len; ++i) {
1655 gint32 cindex1 = *(gint32*)type_info [i];
1658 for (l = nesting [cindex1]; l; l = l->next) {
1659 gint32 nesting_cindex = GPOINTER_TO_INT (l->data);
1661 for (j = 0; j < ei_len; ++j) {
1662 gint32 cindex2 = *(gint32*)type_info [j];
1664 if (cindex2 == nesting_cindex) {
1666 * The try interval comes from the nested clause, everything else from the
1669 memcpy (&jinfo->clauses [nindex], &jinfo->clauses [j], sizeof (MonoJitExceptionInfo));
1670 jinfo->clauses [nindex].try_start = jinfo->clauses [i].try_start;
1671 jinfo->clauses [nindex].try_end = jinfo->clauses [i].try_end;
1677 g_assert (nindex == ei_len + nested_len);
1683 * LOCKING: Acquires the domain lock.
1686 decode_exception_debug_info (MonoAotModule *amodule, MonoDomain *domain,
1687 MonoMethod *method, guint8* ex_info, guint8 *addr,
1688 guint8 *code, guint32 code_len)
1690 int i, buf_len, num_clauses;
1692 guint used_int_regs, flags;
1693 gboolean has_generic_jit_info, has_dwarf_unwind_info, has_clauses, has_seq_points, has_try_block_holes;
1696 int generic_info_size, try_holes_info_size, num_holes, this_reg, this_offset;
1698 /* Load the method info from the AOT file */
1701 flags = decode_value (p, &p);
1702 has_generic_jit_info = (flags & 1) != 0;
1703 has_dwarf_unwind_info = (flags & 2) != 0;
1704 has_clauses = (flags & 4) != 0;
1705 has_seq_points = (flags & 8) != 0;
1706 from_llvm = (flags & 16) != 0;
1707 has_try_block_holes = (flags & 32) != 0;
1709 if (has_dwarf_unwind_info) {
1712 offset = decode_value (p, &p);
1713 g_assert (offset < (1 << 30));
1714 used_int_regs = offset;
1716 used_int_regs = decode_value (p, &p);
1718 if (has_generic_jit_info)
1719 generic_info_size = sizeof (MonoGenericJitInfo);
1721 generic_info_size = 0;
1723 if (has_try_block_holes) {
1724 num_holes = decode_value (p, &p);
1725 try_holes_info_size = sizeof (MonoTryBlockHoleTableJitInfo) + num_holes * sizeof (MonoTryBlockHoleJitInfo);
1727 num_holes = try_holes_info_size = 0;
1729 /* Exception table */
1731 num_clauses = decode_value (p, &p);
1736 MonoJitExceptionInfo *clauses;
1740 * Part of the info is encoded by the AOT compiler, the rest is in the .eh_frame
1743 clauses = g_new0 (MonoJitExceptionInfo, num_clauses);
1744 nesting = g_new0 (GSList*, num_clauses);
1746 for (i = 0; i < num_clauses; ++i) {
1747 MonoJitExceptionInfo *ei = &clauses [i];
1749 ei->flags = decode_value (p, &p);
1751 if (decode_value (p, &p))
1752 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
1754 /* Read the list of nesting clauses */
1756 int nesting_index = decode_value (p, &p);
1757 if (nesting_index == -1)
1759 nesting [i] = g_slist_prepend (nesting [i], GINT_TO_POINTER (nesting_index));
1763 jinfo = decode_eh_frame (amodule, domain, method, code, clauses, num_clauses, generic_info_size + try_holes_info_size, nesting, &this_reg, &this_offset);
1764 jinfo->from_llvm = 1;
1767 for (i = 0; i < num_clauses; ++i)
1768 g_slist_free (nesting [i]);
1772 mono_domain_alloc0 (domain, MONO_SIZEOF_JIT_INFO + (sizeof (MonoJitExceptionInfo) * num_clauses) + generic_info_size + try_holes_info_size);
1773 jinfo->num_clauses = num_clauses;
1775 for (i = 0; i < jinfo->num_clauses; ++i) {
1776 MonoJitExceptionInfo *ei = &jinfo->clauses [i];
1778 ei->flags = decode_value (p, &p);
1780 ei->exvar_offset = decode_value (p, &p);
1782 if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER || ei->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
1783 ei->data.filter = code + decode_value (p, &p);
1785 if (decode_value (p, &p))
1786 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
1789 ei->try_start = code + decode_value (p, &p);
1790 ei->try_end = code + decode_value (p, &p);
1791 ei->handler_start = code + decode_value (p, &p);
1794 jinfo->code_size = code_len;
1795 jinfo->used_regs = used_int_regs;
1796 jinfo->method = method;
1797 jinfo->code_start = code;
1798 jinfo->domain_neutral = 0;
1799 jinfo->from_aot = 1;
1802 if (has_generic_jit_info) {
1803 MonoGenericJitInfo *gi;
1805 jinfo->has_generic_jit_info = 1;
1807 gi = mono_jit_info_get_generic_jit_info (jinfo);
1811 gi->has_this = this_reg != -1;
1812 gi->this_reg = this_reg;
1813 gi->this_offset = this_offset;
1815 gi->has_this = decode_value (p, &p);
1816 gi->this_reg = decode_value (p, &p);
1817 gi->this_offset = decode_value (p, &p);
1820 /* This currently contains no data */
1821 gi->generic_sharing_context = g_new0 (MonoGenericSharingContext, 1);
1823 jinfo->method = decode_resolve_method_ref (amodule, p, &p);
1826 if (has_try_block_holes) {
1827 MonoTryBlockHoleTableJitInfo *table;
1829 jinfo->has_try_block_holes = 1;
1831 table = mono_jit_info_get_try_block_hole_table_info (jinfo);
1834 table->num_holes = (guint16)num_holes;
1835 for (i = 0; i < num_holes; ++i) {
1836 MonoTryBlockHoleJitInfo *hole = &table->holes [i];
1837 hole->clause = decode_value (p, &p);
1838 hole->length = decode_value (p, &p);
1839 hole->offset = decode_value (p, &p);
1843 if (has_seq_points) {
1844 MonoSeqPointInfo *seq_points;
1845 int il_offset, native_offset, last_il_offset, last_native_offset, j;
1847 int len = decode_value (p, &p);
1849 seq_points = g_malloc0 (sizeof (MonoSeqPointInfo) + (len - MONO_ZERO_LEN_ARRAY) * sizeof (SeqPoint));
1850 seq_points->len = len;
1851 last_il_offset = last_native_offset = 0;
1852 for (i = 0; i < len; ++i) {
1853 SeqPoint *sp = &seq_points->seq_points [i];
1854 il_offset = last_il_offset + decode_value (p, &p);
1855 native_offset = last_native_offset + decode_value (p, &p);
1857 sp->il_offset = il_offset;
1858 sp->native_offset = native_offset;
1860 sp->next_len = decode_value (p, &p);
1861 sp->next = g_new (int, sp->next_len);
1862 for (j = 0; j < sp->next_len; ++j)
1863 sp->next [j] = decode_value (p, &p);
1865 last_il_offset = il_offset;
1866 last_native_offset = native_offset;
1869 mono_domain_lock (domain);
1870 g_hash_table_insert (domain_jit_info (domain)->seq_points, method, seq_points);
1871 mono_domain_unlock (domain);
1874 /* Load debug info */
1875 buf_len = decode_value (p, &p);
1876 mono_debug_add_aot_method (domain, method, code, p, buf_len);
1878 if (amodule != jinfo->method->klass->image->aot_module) {
1881 ji_to_amodule = g_hash_table_new (NULL, NULL);
1882 g_hash_table_insert (ji_to_amodule, jinfo, amodule);
1890 * mono_aot_get_unwind_info:
1892 * Return a pointer to the DWARF unwind info belonging to JI.
1895 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
1897 MonoAotModule *amodule = ji->method->klass->image->aot_module;
1899 guint8 *code = ji->code_start;
1902 g_assert (ji->from_aot);
1904 if (!(code >= amodule->code && code <= amodule->code_end)) {
1905 /* ji belongs to a different aot module than amodule */
1907 g_assert (ji_to_amodule);
1908 amodule = g_hash_table_lookup (ji_to_amodule, ji);
1910 g_assert (code >= amodule->code && code <= amodule->code_end);
1914 p = amodule->unwind_info + ji->used_regs;
1915 *unwind_info_len = decode_value (p, &p);
1919 static G_GNUC_UNUSED int
1920 compare_ints (const void *a, const void *b)
1922 return *(gint32*)a - *(gint32*)b;
1926 msort_code_offsets_internal (gint32 *array, int lo, int hi, gint32 *scratch)
1928 int mid = (lo + hi) / 2;
1935 for (i = lo; i < hi; ++i)
1936 if (array [(i * 2)] > array [(i * 2) + 2])
1939 /* Already sorted */
1943 msort_code_offsets_internal (array, lo, mid, scratch);
1944 msort_code_offsets_internal (array, mid + 1, hi, scratch);
1946 if (array [mid * 2] < array [(mid + 1) * 2])
1952 for (i = lo; i <= hi; i ++) {
1953 if (t_lo <= mid && ((t_hi > hi) || array [t_lo * 2] < array [t_hi * 2])) {
1954 scratch [(i * 2)] = array [t_lo * 2];
1955 scratch [(i * 2) + 1] = array [(t_lo *2) + 1];
1958 scratch [(i * 2)] = array [t_hi * 2];
1959 scratch [(i * 2) + 1] = array [(t_hi *2) + 1];
1963 for (i = lo; i <= hi; ++i) {
1964 array [(i * 2)] = scratch [i * 2];
1965 array [(i * 2) + 1] = scratch [(i * 2) + 1];
1970 msort_code_offsets (gint32 *array, int len)
1974 scratch = g_new (gint32, len * 2);
1975 msort_code_offsets_internal (array, 0, len - 1, scratch);
1980 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
1982 int pos, left, right, offset, offset1, offset2, code_len;
1983 int method_index, table_len, is_wrapper;
1985 MonoAotModule *amodule = image->aot_module;
1988 guint8 *code, *ex_info, *p;
1990 int nmethods = amodule->info.nmethods;
1991 gint32 *code_offsets;
1997 if (domain != mono_get_root_domain ())
2001 offset = (guint8*)addr - amodule->code;
2003 /* Compute a sorted table mapping code offsets to method indexes. */
2004 if (!amodule->sorted_code_offsets) {
2006 code_offsets = g_new0 (gint32, nmethods * 2);
2008 for (i = 0; i < nmethods; ++i) {
2009 /* Skip the -1 entries to speed up sorting */
2010 if (amodule->code_offsets [i] == 0xffffffff)
2012 code_offsets [(offsets_len * 2)] = amodule->code_offsets [i];
2013 code_offsets [(offsets_len *2) + 1] = i;
2016 /* Use a merge sort as this is mostly sorted */
2017 msort_code_offsets (code_offsets, offsets_len);
2018 //qsort (code_offsets, offsets_len, sizeof (gint32) * 2, compare_ints);
2019 for (i = 0; i < offsets_len -1; ++i)
2020 g_assert (code_offsets [(i * 2)] <= code_offsets [(i + 1) * 2]);
2022 if (InterlockedCompareExchangePointer ((gpointer*)&amodule->sorted_code_offsets, code_offsets, NULL) != NULL)
2023 /* Somebody got in before us */
2024 g_free (code_offsets);
2025 amodule->sorted_code_offsets_len = offsets_len;
2028 code_offsets = amodule->sorted_code_offsets;
2029 offsets_len = amodule->sorted_code_offsets_len;
2031 /* Binary search in the sorted_code_offsets table */
2033 right = offsets_len;
2035 pos = (left + right) / 2;
2037 offset1 = code_offsets [(pos * 2)];
2038 if (pos + 1 == offsets_len)
2039 offset2 = amodule->code_end - amodule->code;
2041 offset2 = code_offsets [(pos + 1) * 2];
2043 if (offset < offset1)
2045 else if (offset >= offset2)
2051 g_assert (offset >= code_offsets [(pos * 2)]);
2052 if (pos + 1 < offsets_len)
2053 g_assert (offset < code_offsets [((pos + 1) * 2)]);
2054 method_index = code_offsets [(pos * 2) + 1];
2056 code = &amodule->code [amodule->code_offsets [method_index]];
2057 ex_info = &amodule->blob [mono_aot_get_offset (amodule->ex_info_offsets, method_index)];
2059 if (pos == offsets_len - 1)
2060 code_len = amodule->code_end - code;
2062 code_len = code_offsets [(pos + 1) * 2] - code_offsets [pos * 2];
2064 g_assert ((guint8*)code <= (guint8*)addr && (guint8*)addr < (guint8*)code + code_len);
2066 /* Might be a wrapper/extra method */
2067 if (amodule->extra_methods) {
2069 method = g_hash_table_lookup (amodule->extra_methods, GUINT_TO_POINTER (method_index));
2076 if (method_index >= image->tables [MONO_TABLE_METHOD].rows) {
2078 * This is hit for extra methods which are called directly, so they are
2079 * not in amodule->extra_methods.
2081 table_len = amodule->extra_method_info_offsets [0];
2082 table = amodule->extra_method_info_offsets + 1;
2089 pos = ((left + right) / 2);
2091 g_assert (pos < table_len);
2093 if (table [pos * 2] < method_index)
2095 else if (table [pos * 2] > method_index)
2101 p = amodule->blob + table [(pos * 2) + 1];
2102 is_wrapper = decode_value (p, &p);
2103 g_assert (!is_wrapper);
2104 method = decode_resolve_method_ref (amodule, p, &p);
2107 token = mono_metadata_make_token (MONO_TABLE_METHOD, method_index + 1);
2108 method = mono_get_method (image, token, NULL);
2115 //printf ("F: %s\n", mono_method_full_name (method, TRUE));
2117 jinfo = decode_exception_debug_info (amodule, domain, method, ex_info, addr, code, code_len);
2119 g_assert ((guint8*)addr >= (guint8*)jinfo->code_start);
2120 g_assert ((guint8*)addr < (guint8*)jinfo->code_start + jinfo->code_size);
2122 /* Add it to the normal JitInfo tables */
2123 mono_jit_info_table_add (domain, jinfo);
2129 decode_patch (MonoAotModule *aot_module, MonoMemPool *mp, MonoJumpInfo *ji, guint8 *buf, guint8 **endbuf)
2137 case MONO_PATCH_INFO_METHOD:
2138 case MONO_PATCH_INFO_METHOD_JUMP:
2139 case MONO_PATCH_INFO_ICALL_ADDR:
2140 case MONO_PATCH_INFO_METHOD_RGCTX: {
2143 gboolean no_aot_trampoline;
2145 image = decode_method_ref (aot_module, &token, &method, &no_aot_trampoline, p, &p);
2149 if (!method && !mono_aot_only && !no_aot_trampoline && (ji->type == MONO_PATCH_INFO_METHOD) && (mono_metadata_token_table (token) == MONO_TABLE_METHOD)) {
2150 ji->data.target = mono_create_ftnptr (mono_domain_get (), mono_create_jit_trampoline_from_token (image, token));
2151 ji->type = MONO_PATCH_INFO_ABS;
2155 ji->data.method = method;
2157 ji->data.method = mono_get_method (image, token, NULL);
2158 g_assert (ji->data.method);
2159 mono_class_init (ji->data.method->klass);
2163 case MONO_PATCH_INFO_INTERNAL_METHOD:
2164 case MONO_PATCH_INFO_JIT_ICALL_ADDR: {
2165 guint32 len = decode_value (p, &p);
2167 ji->data.name = (char*)p;
2171 case MONO_PATCH_INFO_METHODCONST:
2173 ji->data.method = decode_resolve_method_ref (aot_module, p, &p);
2174 if (!ji->data.method)
2177 case MONO_PATCH_INFO_VTABLE:
2178 case MONO_PATCH_INFO_CLASS:
2179 case MONO_PATCH_INFO_IID:
2180 case MONO_PATCH_INFO_ADJUSTED_IID:
2182 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2183 if (!ji->data.klass)
2186 case MONO_PATCH_INFO_CLASS_INIT:
2187 case MONO_PATCH_INFO_DELEGATE_TRAMPOLINE:
2188 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2189 if (!ji->data.klass)
2192 case MONO_PATCH_INFO_IMAGE:
2193 ji->data.image = load_image (aot_module, decode_value (p, &p), TRUE);
2194 if (!ji->data.image)
2197 case MONO_PATCH_INFO_FIELD:
2198 case MONO_PATCH_INFO_SFLDA:
2200 ji->data.field = decode_field_info (aot_module, p, &p);
2201 if (!ji->data.field)
2204 case MONO_PATCH_INFO_SWITCH:
2205 ji->data.table = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoBBTable));
2206 ji->data.table->table_size = decode_value (p, &p);
2207 table = mono_domain_alloc (mono_domain_get (), sizeof (gpointer) * ji->data.table->table_size);
2208 ji->data.table->table = (MonoBasicBlock**)table;
2209 for (i = 0; i < ji->data.table->table_size; i++)
2210 table [i] = (gpointer)(gssize)decode_value (p, &p);
2212 case MONO_PATCH_INFO_R4: {
2215 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (float));
2216 val = decode_value (p, &p);
2217 *(float*)ji->data.target = *(float*)&val;
2220 case MONO_PATCH_INFO_R8: {
2224 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (double));
2226 val [0] = decode_value (p, &p);
2227 val [1] = decode_value (p, &p);
2228 v = ((guint64)val [1] << 32) | ((guint64)val [0]);
2229 *(double*)ji->data.target = *(double*)&v;
2232 case MONO_PATCH_INFO_LDSTR:
2233 image = load_image (aot_module, decode_value (p, &p), TRUE);
2236 ji->data.token = mono_jump_info_token_new (mp, image, MONO_TOKEN_STRING + decode_value (p, &p));
2238 case MONO_PATCH_INFO_RVA:
2239 case MONO_PATCH_INFO_DECLSEC:
2240 case MONO_PATCH_INFO_LDTOKEN:
2241 case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
2243 image = load_image (aot_module, decode_value (p, &p), TRUE);
2246 ji->data.token = mono_jump_info_token_new (mp, image, decode_value (p, &p));
2248 ji->data.token->has_context = decode_value (p, &p);
2249 if (ji->data.token->has_context) {
2250 gboolean res = decode_generic_context (aot_module, &ji->data.token->context, p, &p);
2255 case MONO_PATCH_INFO_EXC_NAME:
2256 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2257 if (!ji->data.klass)
2259 ji->data.name = ji->data.klass->name;
2261 case MONO_PATCH_INFO_METHOD_REL:
2262 ji->data.offset = decode_value (p, &p);
2264 case MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG:
2265 case MONO_PATCH_INFO_GENERIC_CLASS_INIT:
2266 case MONO_PATCH_INFO_MONITOR_ENTER:
2267 case MONO_PATCH_INFO_MONITOR_EXIT:
2269 case MONO_PATCH_INFO_RGCTX_FETCH: {
2271 MonoJumpInfoRgctxEntry *entry;
2273 entry = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
2274 entry->method = decode_resolve_method_ref (aot_module, p, &p);
2275 entry->in_mrgctx = decode_value (p, &p);
2276 entry->info_type = decode_value (p, &p);
2277 entry->data = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
2278 entry->data->type = decode_value (p, &p);
2280 res = decode_patch (aot_module, mp, entry->data, p, &p);
2283 ji->data.rgctx_entry = entry;
2286 case MONO_PATCH_INFO_SEQ_POINT_INFO:
2288 case MONO_PATCH_INFO_LLVM_IMT_TRAMPOLINE: {
2289 MonoJumpInfoImtTramp *imt_tramp = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoImtTramp));
2291 imt_tramp->method = decode_resolve_method_ref (aot_module, p, &p);
2292 imt_tramp->vt_offset = decode_value (p, &p);
2294 ji->data.imt_tramp = imt_tramp;
2298 g_warning ("unhandled type %d", ji->type);
2299 g_assert_not_reached ();
2310 static MonoJumpInfo*
2311 load_patch_info (MonoAotModule *aot_module, MonoMemPool *mp, int n_patches,
2312 guint32 **got_slots,
2313 guint8 *buf, guint8 **endbuf)
2315 MonoJumpInfo *patches;
2321 patches = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo) * n_patches);
2323 *got_slots = g_malloc (sizeof (guint32) * n_patches);
2325 for (pindex = 0; pindex < n_patches; ++pindex) {
2326 MonoJumpInfo *ji = &patches [pindex];
2331 got_offset = decode_value (p, &p);
2333 if (aot_module->got [got_offset]) {
2334 /* Already loaded */
2335 //printf ("HIT!\n");
2337 shared_p = aot_module->blob + mono_aot_get_offset (aot_module->got_info_offsets, got_offset);
2339 ji->type = decode_value (shared_p, &shared_p);
2341 res = decode_patch (aot_module, mp, ji, shared_p, &shared_p);
2346 (*got_slots) [pindex] = got_offset;
2353 g_free (*got_slots);
2360 register_jump_target_got_slot (MonoDomain *domain, MonoMethod *method, gpointer *got_slot)
2363 * Jump addresses cannot be patched by the trampoline code since it
2364 * does not have access to the caller's address. Instead, we collect
2365 * the addresses of the GOT slots pointing to a method, and patch
2366 * them after the method has been compiled.
2368 MonoJitDomainInfo *info = domain_jit_info (domain);
2371 mono_domain_lock (domain);
2372 if (!info->jump_target_got_slot_hash)
2373 info->jump_target_got_slot_hash = g_hash_table_new (NULL, NULL);
2374 list = g_hash_table_lookup (info->jump_target_got_slot_hash, method);
2375 list = g_slist_prepend (list, got_slot);
2376 g_hash_table_insert (info->jump_target_got_slot_hash, method, list);
2377 mono_domain_unlock (domain);
2383 * Load the method identified by METHOD_INDEX from the AOT image. Return a
2384 * pointer to the native code of the method, or NULL if not found.
2385 * METHOD might not be set if the caller only has the image/token info.
2388 load_method (MonoDomain *domain, MonoAotModule *amodule, MonoImage *image, MonoMethod *method, guint32 token, int method_index)
2391 gboolean from_plt = method == NULL;
2393 int i, pindex, n_patches, used_strings;
2394 gboolean keep_patches = TRUE;
2396 MonoJitInfo *jinfo = NULL;
2397 guint8 *code, *info;
2399 if (mono_profiler_get_events () & MONO_PROFILE_ENTER_LEAVE)
2402 if ((domain != mono_get_root_domain ()) && (!(amodule->info.opts & MONO_OPT_SHARED)))
2403 /* Non shared AOT code can't be used in other appdomains */
2406 if (amodule->out_of_date)
2409 if (amodule->code_offsets [method_index] == 0xffffffff) {
2410 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
2414 method = mono_get_method (image, token, NULL);
2415 full_name = mono_method_full_name (method, TRUE);
2416 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.\n", full_name);
2422 code = &amodule->code [amodule->code_offsets [method_index]];
2424 info = &amodule->blob [mono_aot_get_offset (amodule->method_info_offsets, method_index)];
2427 if (!amodule->methods_loaded)
2428 amodule->methods_loaded = g_new0 (guint32, amodule->info.nmethods + 1);
2431 if ((amodule->methods_loaded [method_index / 32] >> (method_index % 32)) & 0x1)
2434 if (mono_last_aot_method != -1) {
2435 if (mono_jit_stats.methods_aot >= mono_last_aot_method)
2437 else if (mono_jit_stats.methods_aot == mono_last_aot_method - 1) {
2439 method = mono_get_method (image, token, NULL);
2441 char *name = mono_method_full_name (method, TRUE);
2442 printf ("LAST AOT METHOD: %s.\n", name);
2445 printf ("LAST AOT METHOD: %p %d\n", code, method_index);
2453 klass = method->klass;
2454 decode_klass_ref (amodule, p, &p);
2456 klass = decode_klass_ref (amodule, p, &p);
2459 if (amodule->info.opts & MONO_OPT_SHARED)
2460 used_strings = decode_value (p, &p);
2464 for (i = 0; i < used_strings; i++) {
2465 guint token = decode_value (p, &p);
2466 mono_ldstr (mono_get_root_domain (), image, mono_metadata_token_index (token));
2469 if (amodule->info.opts & MONO_OPT_SHARED)
2470 keep_patches = FALSE;
2472 n_patches = decode_value (p, &p);
2474 keep_patches = FALSE;
2477 MonoJumpInfo *patches;
2483 mp = mono_mempool_new ();
2485 patches = load_patch_info (amodule, mp, n_patches, &got_slots, p, &p);
2486 if (patches == NULL)
2489 for (pindex = 0; pindex < n_patches; ++pindex) {
2490 MonoJumpInfo *ji = &patches [pindex];
2492 if (!amodule->got [got_slots [pindex]]) {
2493 amodule->got [got_slots [pindex]] = mono_resolve_patch_target (method, domain, code, ji, TRUE);
2494 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
2495 amodule->got [got_slots [pindex]] = mono_create_ftnptr (domain, amodule->got [got_slots [pindex]]);
2496 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
2497 register_jump_target_got_slot (domain, ji->data.method, &(amodule->got [got_slots [pindex]]));
2499 ji->type = MONO_PATCH_INFO_NONE;
2505 mono_mempool_destroy (mp);
2508 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
2512 method = mono_get_method (image, token, NULL);
2514 full_name = mono_method_full_name (method, TRUE);
2517 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
2519 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT FOUND AOT compiled code for %s %p - %p %p\n", full_name, code, code + jinfo->code_size, info);
2525 mono_jit_stats.methods_aot++;
2527 amodule->methods_loaded [method_index / 32] |= 1 << (method_index % 32);
2531 if (method && method->wrapper_type)
2532 g_hash_table_insert (amodule->method_to_code, method, code);
2536 if (mono_profiler_get_events () & MONO_PROFILE_JIT_COMPILATION) {
2540 method = mono_get_method (image, token, NULL);
2543 mono_profiler_method_jit (method);
2544 jinfo = mono_jit_info_table_find (domain, (char*)code);
2546 mono_profiler_method_end_jit (method, jinfo, MONO_PROFILE_OK);
2549 if (from_plt && klass && !klass->generic_container)
2550 mono_runtime_class_init (mono_class_vtable (domain, klass));
2555 /* FIXME: The space in domain->mp is wasted */
2556 if (amodule->info.opts & MONO_OPT_SHARED)
2557 /* No need to cache patches */
2558 mono_mempool_destroy (mp);
2567 find_extra_method_in_amodule (MonoAotModule *amodule, MonoMethod *method, const char *name)
2569 guint32 table_size, entry_size, hash;
2570 guint32 *table, *entry;
2572 static guint32 n_extra_decodes;
2577 table_size = amodule->extra_method_table [0];
2578 table = amodule->extra_method_table + 1;
2581 hash = mono_aot_method_hash (method) % table_size;
2583 entry = &table [hash * entry_size];
2590 guint32 key = entry [0];
2591 guint32 value = entry [1];
2592 guint32 next = entry [entry_size - 1];
2595 int is_wrapper_name;
2597 p = amodule->blob + key;
2598 is_wrapper_name = decode_value (p, &p);
2599 if (is_wrapper_name) {
2600 int wrapper_type = decode_value (p, &p);
2601 if (wrapper_type == method->wrapper_type && !strcmp (name, (char*)p)) {
2605 } else if (can_method_ref_match_method (amodule, p, method)) {
2607 if (!amodule->method_ref_to_method)
2608 amodule->method_ref_to_method = g_hash_table_new (NULL, NULL);
2609 m = g_hash_table_lookup (amodule->method_ref_to_method, p);
2613 m = decode_resolve_method_ref (amodule, p, &p);
2616 g_hash_table_insert (amodule->method_ref_to_method, orig_p, m);
2625 /* Special case: wrappers of shared generic methods */
2626 if (m && method->wrapper_type && m->wrapper_type == m->wrapper_type &&
2627 method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
2628 MonoMethod *w1 = mono_marshal_method_from_wrapper (method);
2629 MonoMethod *w2 = mono_marshal_method_from_wrapper (m);
2631 if (w1->is_inflated && ((MonoMethodInflated *)w1)->declaring == w2) {
2637 /* Methods decoded needlessly */
2640 printf ("%d %s %s\n", n_extra_decodes, mono_method_full_name (method, TRUE), mono_method_full_name (m, TRUE));
2646 entry = &table [next * entry_size];
2655 add_module_cb (gpointer key, gpointer value, gpointer user_data)
2657 g_ptr_array_add ((GPtrArray*)user_data, value);
2661 * find_extra_method:
2663 * Try finding METHOD in the extra_method table in all AOT images.
2664 * Return its method index, or 0xffffff if not found. Set OUT_AMODULE to the AOT
2665 * module where the method was found.
2668 find_extra_method (MonoMethod *method, MonoAotModule **out_amodule)
2675 if (method->wrapper_type)
2676 name = mono_aot_wrapper_name (method);
2678 /* Try the method's module first */
2679 *out_amodule = method->klass->image->aot_module;
2680 index = find_extra_method_in_amodule (method->klass->image->aot_module, method, name);
2681 if (index != 0xffffff) {
2687 * Try all other modules.
2688 * This is needed because generic instances klass->image points to the image
2689 * containing the generic definition, but the native code is generated to the
2690 * AOT image which contains the reference.
2693 /* Make a copy to avoid doing the search inside the aot lock */
2694 modules = g_ptr_array_new ();
2696 g_hash_table_foreach (aot_modules, add_module_cb, modules);
2700 for (i = 0; i < modules->len; ++i) {
2701 MonoAotModule *amodule = g_ptr_array_index (modules, i);
2703 if (amodule != method->klass->image->aot_module)
2704 index = find_extra_method_in_amodule (amodule, method, name);
2705 if (index != 0xffffff) {
2706 *out_amodule = amodule;
2711 g_ptr_array_free (modules, TRUE);
2718 * mono_aot_get_method:
2720 * Return a pointer to the AOTed native code for METHOD if it can be found,
2722 * On platforms with function pointers, this doesn't return a function pointer.
2725 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
2727 MonoClass *klass = method->klass;
2728 guint32 method_index;
2729 MonoAotModule *amodule = klass->image->aot_module;
2735 if (amodule->out_of_date)
2738 if ((method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
2739 (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
2740 (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
2741 (method->flags & METHOD_ATTRIBUTE_ABSTRACT))
2745 * Use the original method instead of its invoke-with-check wrapper.
2746 * This is not a problem when using full-aot, since it doesn't support
2749 if (mono_aot_only && method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)
2750 return mono_aot_get_method (domain, mono_marshal_method_from_wrapper (method));
2752 g_assert (klass->inited);
2754 /* Find method index */
2755 if (method->is_inflated && mono_method_is_generic_sharable_impl_full (method, FALSE, FALSE)) {
2757 * For generic methods, we store the fully shared instance in place of the
2760 method = mono_method_get_declaring_generic_method (method);
2761 method_index = mono_metadata_token_index (method->token) - 1;
2762 } else if (method->is_inflated || !method->token) {
2763 /* This hash table is used to avoid the slower search in the extra_method_table in the AOT image */
2765 code = g_hash_table_lookup (amodule->method_to_code, method);
2770 method_index = find_extra_method (method, &amodule);
2772 * Special case the ICollection<T> wrappers for arrays, as they cannot
2773 * be statically enumerated, and each wrapper ends up calling the same
2776 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED && method->klass->rank && strstr (method->name, "System.Collections.Generic")) {
2777 MonoMethod *m = mono_aot_get_array_helper_from_wrapper (method);
2779 code = mono_aot_get_method (domain, m);
2781 if (mono_method_needs_static_rgctx_invoke (m, FALSE)) {
2782 code = mono_create_static_rgctx_trampoline (m, mono_create_ftnptr (domain, code));
2783 /* The call above returns an ftnptr */
2784 code = mono_get_addr_from_ftnptr (code);
2792 * Special case Array.GetGenericValueImpl which is a generic icall.
2793 * Generic sharing currently can't handle it, but the icall returns data using
2794 * an out parameter, so the managed-to-native wrappers can share the same code.
2796 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass == mono_defaults.array_class && !strcmp (method->name, "GetGenericValueImpl")) {
2798 MonoGenericContext ctx;
2799 MonoType *args [16];
2801 if (mono_method_signature (method)->params [1]->type == MONO_TYPE_OBJECT)
2802 /* Avoid recursion */
2805 m = mono_class_get_method_from_name (mono_defaults.array_class, "GetGenericValueImpl", 2);
2808 memset (&ctx, 0, sizeof (ctx));
2809 args [0] = &mono_defaults.object_class->byval_arg;
2810 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
2812 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method (m, &ctx), TRUE, TRUE);
2815 * Get the code for the <object> instantiation which should be emitted into
2816 * the mscorlib aot image by the AOT compiler.
2818 code = mono_aot_get_method (domain, m);
2823 if (method_index == 0xffffff && method->is_inflated && mono_method_is_generic_sharable_impl_full (method, FALSE, TRUE)) {
2824 /* Partial sharing */
2825 method_index = find_extra_method (mini_get_shared_method (method), &amodule);
2828 if (method_index == 0xffffff) {
2829 if (mono_aot_only && mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
2832 full_name = mono_method_full_name (method, TRUE);
2833 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.\n", full_name);
2839 if (method_index == 0xffffff)
2842 /* Needed by find_jit_info */
2844 if (!amodule->extra_methods)
2845 amodule->extra_methods = g_hash_table_new (NULL, NULL);
2846 g_hash_table_insert (amodule->extra_methods, GUINT_TO_POINTER (method_index), method);
2850 method_index = mono_metadata_token_index (method->token) - 1;
2853 return load_method (domain, amodule, klass->image, method, method->token, method_index);
2857 * Same as mono_aot_get_method, but we try to avoid loading any metadata from the
2861 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
2863 MonoAotModule *aot_module = image->aot_module;
2869 method_index = mono_metadata_token_index (token) - 1;
2871 return load_method (domain, aot_module, image, NULL, token, method_index);
2877 } IsGotEntryUserData;
2880 check_is_got_entry (gpointer key, gpointer value, gpointer user_data)
2882 IsGotEntryUserData *data = (IsGotEntryUserData*)user_data;
2883 MonoAotModule *aot_module = (MonoAotModule*)value;
2885 if (aot_module->got && (data->addr >= (guint8*)(aot_module->got)) && (data->addr < (guint8*)(aot_module->got + aot_module->info.got_size)))
2890 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
2892 IsGotEntryUserData user_data;
2897 user_data.addr = addr;
2898 user_data.res = FALSE;
2900 g_hash_table_foreach (aot_modules, check_is_got_entry, &user_data);
2903 return user_data.res;
2908 MonoAotModule *module;
2909 } FindAotModuleUserData;
2912 find_aot_module_cb (gpointer key, gpointer value, gpointer user_data)
2914 FindAotModuleUserData *data = (FindAotModuleUserData*)user_data;
2915 MonoAotModule *aot_module = (MonoAotModule*)value;
2917 if ((data->addr >= (guint8*)(aot_module->code)) && (data->addr < (guint8*)(aot_module->code_end)))
2918 data->module = aot_module;
2921 static inline MonoAotModule*
2922 find_aot_module (guint8 *code)
2924 FindAotModuleUserData user_data;
2929 /* Reading these need no locking */
2930 if (((gsize)code < aot_code_low_addr) || ((gsize)code > aot_code_high_addr))
2933 user_data.addr = code;
2934 user_data.module = NULL;
2937 g_hash_table_foreach (aot_modules, find_aot_module_cb, &user_data);
2940 return user_data.module;
2944 mono_aot_patch_plt_entry (guint8 *code, gpointer *got, mgreg_t *regs, guint8 *addr)
2947 * Since AOT code is only used in the root domain,
2948 * mono_domain_get () != mono_get_root_domain () means the calling method
2949 * is AppDomain:InvokeInDomain, so this is the same check as in
2950 * mono_method_same_domain () but without loading the metadata for the method.
2952 if (mono_domain_get () == mono_get_root_domain ())
2953 mono_arch_patch_plt_entry (code, got, regs, addr);
2957 * mono_aot_plt_resolve:
2959 * This function is called by the entries in the PLT to resolve the actual method that
2960 * needs to be called. It returns a trampoline to the method and patches the PLT entry.
2961 * Returns NULL if the something cannot be loaded.
2964 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
2966 #ifdef MONO_ARCH_AOT_SUPPORTED
2967 guint8 *p, *target, *plt_entry;
2969 MonoAotModule *module = (MonoAotModule*)aot_module;
2970 gboolean res, no_ftnptr = FALSE;
2973 //printf ("DYN: %p %d\n", aot_module, plt_info_offset);
2975 p = &module->blob [plt_info_offset];
2977 ji.type = decode_value (p, &p);
2979 mp = mono_mempool_new_size (512);
2980 res = decode_patch (module, mp, &ji, p, &p);
2983 mono_mempool_destroy (mp);
2988 * Avoid calling resolve_patch_target in the full-aot case if possible, since
2989 * it would create a trampoline, and we don't need that.
2990 * We could do this only if the method does not need the special handling
2991 * in mono_magic_trampoline ().
2993 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) &&
2994 !mono_method_needs_static_rgctx_invoke (ji.data.method, FALSE)) {
2995 target = mono_jit_compile_method (ji.data.method);
2998 target = mono_resolve_patch_target (NULL, mono_domain_get (), NULL, &ji, TRUE);
3002 * The trampoline expects us to return a function descriptor on platforms which use
3003 * it, but resolve_patch_target returns a direct function pointer for some type of
3004 * patches, so have to translate between the two.
3005 * FIXME: Clean this up, but how ?
3007 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) {
3008 /* These should already have a function descriptor */
3009 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3010 /* Our function descriptors have a 0 environment, gcc created ones don't */
3011 if (ji.type != MONO_PATCH_INFO_INTERNAL_METHOD && ji.type != MONO_PATCH_INFO_JIT_ICALL_ADDR && ji.type != MONO_PATCH_INFO_ICALL_ADDR)
3012 g_assert (((gpointer*)target) [2] == 0);
3015 } else if (!no_ftnptr) {
3016 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3017 g_assert (((gpointer*)target) [2] != 0);
3019 target = mono_create_ftnptr (mono_domain_get (), target);
3022 mono_mempool_destroy (mp);
3024 /* Patch the PLT entry with target which might be the actual method not a trampoline */
3025 plt_entry = mono_aot_get_plt_entry (code);
3026 g_assert (plt_entry);
3027 mono_aot_patch_plt_entry (plt_entry, module->got, NULL, target);
3031 g_assert_not_reached ();
3039 * Initialize the PLT table of the AOT module. Called lazily when the first AOT
3040 * method in the module is loaded to avoid committing memory by writing to it.
3041 * LOCKING: Assumes the AOT lock is held.
3044 init_plt (MonoAotModule *amodule)
3049 if (amodule->plt_inited)
3052 tramp = mono_create_specific_trampoline (amodule, MONO_TRAMPOLINE_AOT_PLT, mono_get_root_domain (), NULL);
3055 * Initialize the PLT entries in the GOT to point to the default targets.
3058 tramp = mono_create_ftnptr (mono_domain_get (), tramp);
3059 for (i = 1; i < amodule->info.plt_size; ++i)
3060 /* All the default entries point to the AOT trampoline */
3061 ((gpointer*)amodule->got)[amodule->info.plt_got_offset_base + i] = tramp;
3063 amodule->plt_inited = TRUE;
3067 * mono_aot_get_plt_entry:
3069 * Return the address of the PLT entry called by the code at CODE if exists.
3072 mono_aot_get_plt_entry (guint8 *code)
3074 MonoAotModule *aot_module = find_aot_module (code);
3079 #ifdef MONO_ARCH_AOT_SUPPORTED
3081 guint8 *target = mono_arch_get_call_target (code);
3083 if ((target >= (guint8*)(aot_module->plt)) && (target < (guint8*)(aot_module->plt_end)))
3087 g_assert_not_reached ();
3094 * mono_aot_get_plt_info_offset:
3096 * Return the PLT info offset belonging to the plt entry called by CODE.
3099 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
3101 guint8 *plt_entry = mono_aot_get_plt_entry (code);
3103 g_assert (plt_entry);
3105 /* The offset is embedded inside the code after the plt entry */
3106 #ifdef MONO_ARCH_AOT_SUPPORTED
3107 return mono_arch_get_plt_info_offset (plt_entry, regs, code);
3109 g_assert_not_reached ();
3115 mono_create_ftnptr_malloc (guint8 *code)
3117 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3118 MonoPPCFunctionDescriptor *ftnptr = g_malloc0 (sizeof (MonoPPCFunctionDescriptor));
3120 ftnptr->code = code;
3130 static GHashTable *aot_jit_icall_hash;
3133 * mono_aot_register_jit_icall:
3135 * Register a JIT icall which is called by trampolines in full-aot mode. This should
3136 * be called from mono_arch_init () during startup.
3139 mono_aot_register_jit_icall (const char *name, gpointer addr)
3141 /* No need for locking */
3142 if (!aot_jit_icall_hash)
3143 aot_jit_icall_hash = g_hash_table_new (g_str_hash, g_str_equal);
3144 g_hash_table_insert (aot_jit_icall_hash, (char*)name, addr);
3150 * Load the function named NAME from the aot image.
3153 load_function (MonoAotModule *amodule, const char *name)
3157 int n_patches, pindex;
3163 symbol = g_strdup_printf ("%s", name);
3164 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&code);
3167 g_error ("Symbol '%s' not found in AOT file '%s'.\n", name, amodule->aot_name);
3169 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT FOUND function '%s' in AOT file '%s'.\n", name, amodule->aot_name);
3173 symbol = g_strdup_printf ("%s_p", name);
3174 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&p);
3177 /* Nothing to patch */
3180 p = amodule->blob + *(guint32*)p;
3182 /* Similar to mono_aot_load_method () */
3184 n_patches = decode_value (p, &p);
3187 MonoJumpInfo *patches;
3190 mp = mono_mempool_new ();
3192 patches = load_patch_info (amodule, mp, n_patches, &got_slots, p, &p);
3195 for (pindex = 0; pindex < n_patches; ++pindex) {
3196 MonoJumpInfo *ji = &patches [pindex];
3199 if (amodule->got [got_slots [pindex]])
3203 * When this code is executed, the runtime may not be initalized yet, so
3204 * resolve the patch info by hand.
3206 if (ji->type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
3207 if (!strcmp (ji->data.name, "mono_get_lmf_addr")) {
3208 target = mono_get_lmf_addr;
3209 } else if (!strcmp (ji->data.name, "mono_thread_force_interruption_checkpoint")) {
3210 target = mono_thread_force_interruption_checkpoint;
3211 } else if (!strcmp (ji->data.name, "mono_exception_from_token")) {
3212 target = mono_exception_from_token;
3213 } else if (!strcmp (ji->data.name, "mono_throw_exception")) {
3214 target = mono_get_throw_exception ();
3215 } else if (strstr (ji->data.name, "trampoline_func_") == ji->data.name) {
3216 int tramp_type2 = atoi (ji->data.name + strlen ("trampoline_func_"));
3217 target = (gpointer)mono_get_trampoline_func (tramp_type2);
3218 } else if (strstr (ji->data.name, "specific_trampoline_lazy_fetch_") == ji->data.name) {
3219 /* atoll is needed because the the offset is unsigned */
3223 res = sscanf (ji->data.name, "specific_trampoline_lazy_fetch_%u", &slot);
3224 g_assert (res == 1);
3225 target = mono_create_specific_trampoline (GUINT_TO_POINTER (slot), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, mono_get_root_domain (), NULL);
3226 target = mono_create_ftnptr_malloc (target);
3227 } else if (!strcmp (ji->data.name, "specific_trampoline_monitor_enter")) {
3228 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_MONITOR_ENTER, mono_get_root_domain (), NULL);
3229 target = mono_create_ftnptr_malloc (target);
3230 } else if (!strcmp (ji->data.name, "specific_trampoline_monitor_exit")) {
3231 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_MONITOR_EXIT, mono_get_root_domain (), NULL);
3232 target = mono_create_ftnptr_malloc (target);
3233 } else if (!strcmp (ji->data.name, "specific_trampoline_generic_class_init")) {
3234 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_GENERIC_CLASS_INIT, mono_get_root_domain (), NULL);
3235 target = mono_create_ftnptr_malloc (target);
3236 } else if (!strcmp (ji->data.name, "mono_thread_get_and_clear_pending_exception")) {
3237 target = mono_thread_get_and_clear_pending_exception;
3238 } else if (strstr (ji->data.name, "generic_trampoline_")) {
3239 target = mono_aot_get_trampoline (ji->data.name);
3240 } else if (aot_jit_icall_hash && g_hash_table_lookup (aot_jit_icall_hash, ji->data.name)) {
3241 /* Registered by mono_arch_init () */
3242 target = g_hash_table_lookup (aot_jit_icall_hash, ji->data.name);
3244 fprintf (stderr, "Unknown relocation '%s'\n", ji->data.name);
3245 g_assert_not_reached ();
3249 /* Hopefully the code doesn't have patches which need method or
3252 target = mono_resolve_patch_target (NULL, NULL, code, ji, FALSE);
3256 amodule->got [got_slots [pindex]] = target;
3261 mono_mempool_destroy (mp);
3268 * Return the trampoline identified by NAME from the mscorlib AOT file.
3269 * On ppc64, this returns a function descriptor.
3272 mono_aot_get_trampoline (const char *name)
3275 MonoAotModule *amodule;
3277 image = mono_defaults.corlib;
3280 amodule = image->aot_module;
3283 return mono_create_ftnptr_malloc (load_function (amodule, name));
3286 /* Return a given kind of trampoline */
3288 get_numerous_trampoline (MonoAotTrampoline tramp_type, int n_got_slots, MonoAotModule **out_amodule, guint32 *got_offset, guint32 *out_tramp_size)
3290 MonoAotModule *amodule;
3291 int index, tramp_size;
3294 /* Currently, we keep all trampolines in the mscorlib AOT image */
3295 image = mono_defaults.corlib;
3300 amodule = image->aot_module;
3303 *out_amodule = amodule;
3305 if (amodule->trampoline_index [tramp_type] == amodule->info.num_trampolines [tramp_type])
3306 g_error ("Ran out of trampolines of type %d in '%s' (%d)\n", tramp_type, image->name, amodule->info.num_trampolines [tramp_type]);
3308 index = amodule->trampoline_index [tramp_type] ++;
3312 *got_offset = amodule->info.trampoline_got_offset_base [tramp_type] + (index * n_got_slots);
3314 tramp_size = amodule->info.trampoline_size [tramp_type];
3317 *out_tramp_size = tramp_size;
3319 return amodule->trampolines [tramp_type] + (index * tramp_size);
3323 * Return a specific trampoline from the AOT file.
3326 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
3328 MonoAotModule *amodule;
3329 guint32 got_offset, tramp_size;
3330 guint8 *code, *tramp;
3331 static gpointer generic_trampolines [MONO_TRAMPOLINE_NUM];
3332 static gboolean inited;
3333 static guint32 num_trampolines;
3339 mono_counters_register ("Specific trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &num_trampolines);
3348 if (!generic_trampolines [tramp_type]) {
3351 symbol = mono_get_generic_trampoline_name (tramp_type);
3352 generic_trampolines [tramp_type] = mono_aot_get_trampoline (symbol);
3356 tramp = generic_trampolines [tramp_type];
3359 code = get_numerous_trampoline (MONO_AOT_TRAMP_SPECIFIC, 2, &amodule, &got_offset, &tramp_size);
3361 amodule->got [got_offset] = tramp;
3362 amodule->got [got_offset + 1] = arg1;
3365 *code_len = tramp_size;
3371 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
3373 MonoAotModule *amodule;
3377 code = get_numerous_trampoline (MONO_AOT_TRAMP_STATIC_RGCTX, 2, &amodule, &got_offset, NULL);
3379 amodule->got [got_offset] = ctx;
3380 amodule->got [got_offset + 1] = addr;
3382 /* The caller expects an ftnptr */
3383 return mono_create_ftnptr (mono_domain_get (), code);
3387 mono_aot_get_unbox_trampoline (MonoMethod *method)
3389 guint32 method_index = mono_metadata_token_index (method->token) - 1;
3390 MonoAotModule *amodule;
3394 if (method->is_inflated && !mono_method_is_generic_sharable_impl (method, FALSE)) {
3395 guint32 index = find_extra_method (method, &amodule);
3396 g_assert (index != 0xffffff);
3398 symbol = g_strdup_printf ("ut_e_%d", index);
3400 amodule = method->klass->image->aot_module;
3403 symbol = g_strdup_printf ("ut_%d", method_index);
3405 code = load_function (amodule, symbol);
3408 /* The caller expects an ftnptr */
3409 return mono_create_ftnptr (mono_domain_get (), code);
3413 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
3418 symbol = mono_get_rgctx_fetch_trampoline_name (slot);
3419 code = load_function (mono_defaults.corlib->aot_module, symbol);
3421 /* The caller expects an ftnptr */
3422 return mono_create_ftnptr (mono_domain_get (), code);
3426 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
3432 MonoAotModule *amodule;
3434 code = get_numerous_trampoline (MONO_AOT_TRAMP_IMT_THUNK, 1, &amodule, &got_offset, NULL);
3436 /* Save the entries into an array */
3437 buf = mono_domain_alloc (domain, (count + 1) * 2 * sizeof (gpointer));
3438 for (i = 0; i < count; ++i) {
3439 MonoIMTCheckItem *item = imt_entries [i];
3441 g_assert (item->key);
3443 g_assert (!item->has_target_code);
3445 buf [(i * 2)] = item->key;
3446 buf [(i * 2) + 1] = &(vtable->vtable [item->value.vtable_slot]);
3448 buf [(count * 2)] = NULL;
3449 buf [(count * 2) + 1] = fail_tramp;
3451 amodule->got [got_offset] = buf;
3457 * mono_aot_set_make_unreadable:
3459 * Set whenever to make all mmaped memory unreadable. In conjuction with a
3460 * SIGSEGV handler, this is useful to find out which pages the runtime tries to read.
3463 mono_aot_set_make_unreadable (gboolean unreadable)
3467 make_unreadable = unreadable;
3469 if (make_unreadable && !inited) {
3470 mono_counters_register ("AOT pagefaults", MONO_COUNTER_JIT | MONO_COUNTER_INT, &n_pagefaults);
3475 MonoAotModule *module;
3480 find_map (gpointer key, gpointer value, gpointer user_data)
3482 MonoAotModule *module = (MonoAotModule*)value;
3483 FindMapUserData *data = (FindMapUserData*)user_data;
3486 if ((data->ptr >= module->mem_begin) && (data->ptr < module->mem_end))
3487 data->module = module;
3490 static MonoAotModule*
3491 find_module_for_addr (void *ptr)
3493 FindMapUserData data;
3495 if (!make_unreadable)
3499 data.ptr = (guint8*)ptr;
3502 g_hash_table_foreach (aot_modules, (GHFunc)find_map, &data);
3509 * mono_aot_is_pagefault:
3511 * Should be called from a SIGSEGV signal handler to find out whenever @ptr is
3512 * within memory allocated by this module.
3515 mono_aot_is_pagefault (void *ptr)
3517 if (!make_unreadable)
3521 * Not signal safe, but SIGSEGV's are synchronous, and
3522 * this is only turned on by a MONO_DEBUG option.
3524 return find_module_for_addr (ptr) != NULL;
3528 * mono_aot_handle_pagefault:
3530 * Handle a pagefault caused by an unreadable page by making it readable again.
3533 mono_aot_handle_pagefault (void *ptr)
3535 #ifndef PLATFORM_WIN32
3536 guint8* start = (guint8*)ROUND_DOWN (((gssize)ptr), mono_pagesize ());
3540 res = mono_mprotect (start, mono_pagesize (), MONO_MMAP_READ|MONO_MMAP_WRITE|MONO_MMAP_EXEC);
3541 g_assert (res == 0);
3552 mono_aot_init (void)
3557 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
3563 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
3569 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
3575 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
3581 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
3587 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
3593 mono_aot_get_plt_entry (guint8 *code)
3599 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
3605 mono_aot_patch_plt_entry (guint8 *code, gpointer *got, mgreg_t *regs, guint8 *addr)
3610 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
3616 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
3618 g_assert_not_reached ();
3624 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
3626 g_assert_not_reached ();
3631 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
3633 g_assert_not_reached ();
3638 mono_aot_get_trampoline (const char *name)
3640 g_assert_not_reached ();
3645 mono_aot_get_unbox_trampoline (MonoMethod *method)
3647 g_assert_not_reached ();
3652 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
3654 g_assert_not_reached ();
3659 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
3661 g_assert_not_reached ();
3666 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
3668 g_assert_not_reached ();
3673 mono_aot_register_jit_icall (const char *name, gpointer addr)