2 * aot.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 #ifndef PLATFORM_WIN32
25 #ifdef HAVE_EXECINFO_H
31 #include <limits.h> /* for PAGESIZE */
36 #ifdef HAVE_SYS_WAIT_H
37 #include <sys/wait.h> /* for WIFEXITED, WEXITSTATUS */
40 #include <mono/metadata/tabledefs.h>
41 #include <mono/metadata/class.h>
42 #include <mono/metadata/object.h>
43 #include <mono/metadata/tokentype.h>
44 #include <mono/metadata/appdomain.h>
45 #include <mono/metadata/debug-helpers.h>
46 #include <mono/metadata/assembly.h>
47 #include <mono/metadata/metadata-internals.h>
48 #include <mono/metadata/marshal.h>
49 #include <mono/metadata/gc-internal.h>
50 #include <mono/utils/mono-logger.h>
51 #include "mono/utils/mono-compiler.h"
59 #define SHARED_EXT ".dll"
60 #elif (defined(__ppc__) || defined(__ppc64__)) || defined(__MACH__)
61 #define SHARED_EXT ".dylib"
63 #define SHARED_EXT ".so"
66 #define ALIGN_PTR_TO(ptr,align) (gpointer)((((gssize)(ptr)) + (align - 1)) & (~(align - 1)))
67 #define ROUND_DOWN(VALUE,SIZE) ((VALUE) & ~((SIZE) - 1))
69 typedef struct MonoAotModule {
71 /* Optimization flags used to compile the module */
73 /* Pointer to the Global Offset Table */
76 GHashTable *name_cache;
78 MonoAssemblyName *image_names;
80 MonoAssembly *assembly;
81 MonoImage **image_table;
82 guint32 image_table_len;
92 guint8 *plt_jump_table;
93 guint32 plt_jump_table_size;
94 guint32 *code_offsets;
96 guint32 *method_info_offsets;
98 guint32 *got_info_offsets;
100 guint32 *ex_info_offsets;
101 guint32 *method_order;
102 guint32 *method_order_end;
104 guint32 *class_info_offsets;
105 guint32 *methods_loaded;
106 guint16 *class_name_table;
107 guint8 *wrapper_info;
109 guint32 num_trampolines, first_trampoline_got_offset, trampoline_index;
114 static GHashTable *aot_modules;
115 #define mono_aot_lock() EnterCriticalSection (&aot_mutex)
116 #define mono_aot_unlock() LeaveCriticalSection (&aot_mutex)
117 static CRITICAL_SECTION aot_mutex;
120 * Maps assembly names to the mono_aot_module_<NAME>_info symbols in the
121 * AOT modules registered by mono_aot_register_module ().
123 static GHashTable *static_aot_modules;
126 * Disabling this will make a copy of the loaded code and use the copy instead
127 * of the original. This will place the caller and the callee close to each
128 * other in memory, possibly improving cache behavior. Since the original
129 * code is in copy-on-write memory, this will not increase the memory usage
132 static gboolean use_loaded_code = TRUE;
135 * Whenever to AOT compile loaded assemblies on demand and store them in
136 * a cache under $HOME/.mono/aot-cache.
138 static gboolean use_aot_cache = FALSE;
141 * Whenever to spawn a new process to AOT a file or do it in-process. Only relevant if
142 * use_aot_cache is TRUE.
144 static gboolean spawn_compiler = TRUE;
147 static gint32 mono_last_aot_method = -1;
149 static gboolean make_unreadable = FALSE;
150 static guint32 n_pagefaults = 0;
151 static guint32 name_table_accesses = 0;
153 /* Used to speed-up find_aot_module () */
154 static gsize aot_code_low_addr = (gssize)-1;
155 static gsize aot_code_high_addr = 0;
157 /* Used to communicate with mono_aot_register_globals () */
158 static guint32 globals_tls_id = -1;
161 mono_aot_load_method (MonoDomain *domain, MonoAotModule *aot_module, MonoMethod *method, guint8 *code, guint8 *info, int method_index);
164 init_plt (MonoAotModule *info);
167 load_patch_info (MonoAotModule *aot_module, MonoMemPool *mp, int n_patches,
168 guint32 got_index, guint32 **got_slots,
169 guint8 *buf, guint8 **endbuf);
171 static inline gboolean
172 is_got_patch (MonoJumpInfoType patch_type)
177 /*****************************************************/
179 /*****************************************************/
182 load_image (MonoAotModule *module, int index)
184 MonoAssembly *assembly;
185 MonoImageOpenStatus status;
187 g_assert (index < module->image_table_len);
189 if (module->image_table [index])
190 return module->image_table [index];
191 if (module->out_of_date)
194 assembly = mono_assembly_load (&module->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", module->aot_name, module->image_names [index].name);
197 module->out_of_date = TRUE;
201 if (strcmp (assembly->image->guid, module->image_guids [index])) {
202 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is out of date (Older than dependency %s).\n", module->aot_name, module->image_names [index].name);
203 module->out_of_date = TRUE;
207 module->image_table [index] = assembly->image;
208 return assembly->image;
213 decode_value (guint8 *ptr, guint8 **rptr)
218 if ((b & 0x80) == 0){
221 } else if ((b & 0x40) == 0){
222 len = ((b & 0x3f) << 8 | ptr [1]);
224 } else if (b != 0xff) {
225 len = ((b & 0x1f) << 24) |
232 len = (ptr [1] << 24) | (ptr [2] << 16) | (ptr [3] << 8) | ptr [4];
238 //printf ("DECODE: %d.\n", len);
243 decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
246 MonoClass *klass, *eklass;
249 token = decode_value (buf, &buf);
254 if (mono_metadata_token_table (token) == 0) {
255 image = load_image (module, decode_value (buf, &buf));
258 klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF + token);
259 } else if (mono_metadata_token_table (token) == MONO_TABLE_TYPESPEC) {
260 if (token == MONO_TOKEN_TYPE_SPEC) {
263 MonoGenericContext ctx;
264 MonoGenericInst inst;
267 gclass = decode_klass_ref (module, buf, &buf);
268 g_assert (gclass->generic_container);
270 memset (&ctx, 0, sizeof (ctx));
271 memset (&inst, 0, sizeof (inst));
272 ctx.class_inst = &inst;
273 inst.type_argc = decode_value (buf, &buf);
274 inst.type_argv = g_new0 (MonoType*, inst.type_argc);
275 for (i = 0; i < inst.type_argc; ++i) {
276 MonoClass *pclass = decode_klass_ref (module, buf, &buf);
278 g_free (inst.type_argv);
281 inst.type_argv [i] = &pclass->byval_arg;
283 type = mono_class_inflate_generic_type (&gclass->byval_arg, &ctx);
284 klass = mono_class_from_mono_type (type);
285 mono_metadata_free_type (type);
287 image = load_image (module, decode_value (buf, &buf));
290 klass = mono_class_get (image, token);
292 } else if (token == MONO_TOKEN_TYPE_DEF) {
294 image = load_image (module, decode_value (buf, &buf));
297 rank = decode_value (buf, &buf);
298 eklass = decode_klass_ref (module, buf, &buf);
299 klass = mono_array_class_get (eklass, rank);
301 g_assert_not_reached ();
304 mono_class_init (klass);
310 static MonoClassField*
311 decode_field_info (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
313 MonoClass *klass = decode_klass_ref (module, buf, &buf);
319 token = MONO_TOKEN_FIELD_DEF + decode_value (buf, &buf);
323 return mono_class_get_field (klass, token);
326 static inline MonoImage*
327 decode_method_ref (MonoAotModule *module, guint32 *token, MonoMethod **method, guint8 *buf, guint8 **endbuf)
329 guint32 image_index, value;
335 value = decode_value (buf, &buf);
336 image_index = value >> 24;
338 if (image_index == 255) {
340 image_index = decode_value (buf, &buf);
341 *token = decode_value (buf, &buf);
343 image = load_image (module, image_index);
346 } else if (image_index == 254) {
347 /* Method on generic instance */
350 MonoGenericContext context;
353 * These methods do not have a token which resolves them, so we
354 * resolve them immediately.
356 klass = decode_klass_ref (module, buf, &buf);
360 image_index = decode_value (buf, &buf);
361 token2 = decode_value (buf, &buf);
363 image = load_image (module, image_index);
368 *method = mono_get_method_full (image, token2, NULL, NULL);
371 g_assert (klass->generic_class);
372 context.class_inst = klass->generic_class->context.class_inst;
373 context.method_inst = NULL;
375 *method = mono_class_inflate_generic_method_full (*method, klass, &context);
377 *token = MONO_TOKEN_METHOD_DEF | (value & 0xffffff);
379 image = load_image (module, image_index);
391 make_writable (guint8* addr, guint32 len)
393 #ifndef PLATFORM_WIN32
398 g_error ("Attempt to make AOT memory writable while running in aot-only mode.\n");
400 page_start = (guint8 *) (((gssize) (addr)) & ~ (PAGESIZE - 1));
401 pages = (addr + len - page_start + PAGESIZE - 1) / PAGESIZE;
402 err = mprotect (page_start, pages * PAGESIZE, PROT_READ | PROT_WRITE | PROT_EXEC);
407 g_assert (VirtualProtect (addr, len, PAGE_EXECUTE_READWRITE, &oldp) != 0);
413 create_cache_structure (void)
419 home = g_get_home_dir ();
423 tmp = g_build_filename (home, ".mono", NULL);
424 if (!g_file_test (tmp, G_FILE_TEST_IS_DIR)) {
425 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT creating directory %s", tmp);
426 #ifdef PLATFORM_WIN32
429 err = mkdir (tmp, 0777);
432 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed: %s", g_strerror (errno));
438 tmp = g_build_filename (home, ".mono", "aot-cache", NULL);
439 if (!g_file_test (tmp, G_FILE_TEST_IS_DIR)) {
440 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT creating directory %s", tmp);
441 #ifdef PLATFORM_WIN32
444 err = mkdir (tmp, 0777);
447 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed: %s", g_strerror (errno));
456 * load_aot_module_from_cache:
458 * Experimental code to AOT compile loaded assemblies on demand.
461 * - Add environment variable MONO_AOT_CACHE_OPTIONS
462 * - Add options for controlling the cache size
463 * - Handle full cache by deleting old assemblies lru style
464 * - Add options for excluding assemblies during development
465 * - Maybe add a threshold after an assembly is AOT compiled
466 * - invoking a new mono process is a security risk
467 * - recompile the AOT module if one of its dependencies changes
470 load_aot_module_from_cache (MonoAssembly *assembly, char **aot_name)
472 char *fname, *cmd, *tmp2, *aot_options;
481 if (assembly->image->dynamic)
484 create_cache_structure ();
486 home = g_get_home_dir ();
488 tmp2 = g_strdup_printf ("%s-%s%s", assembly->image->assembly_name, assembly->image->guid, SHARED_EXT);
489 fname = g_build_filename (home, ".mono", "aot-cache", tmp2, NULL);
493 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT trying to load from cache: '%s'.", fname);
494 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
497 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT not found.");
499 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT precompiling assembly '%s'... ", assembly->image->name);
501 aot_options = g_strdup_printf ("outfile=%s", fname);
503 if (spawn_compiler) {
504 /* FIXME: security */
505 /* FIXME: Has to pass the assembly loading path to the child process */
506 cmd = g_strdup_printf ("mono -O=all --aot=%s %s", aot_options, assembly->image->name);
508 res = g_spawn_command_line_sync (cmd, &out, &err, &exit_status, NULL);
510 #if !defined(PLATFORM_WIN32) && !defined(__ppc__) && !defined(__ppc64__) && !defined(__powerpc__)
512 if (!WIFEXITED (exit_status) && (WEXITSTATUS (exit_status) == 0))
513 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT failed: %s.", err);
515 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT succeeded.");
522 res = mono_compile_assembly (assembly, mono_parse_default_optimizations (NULL), aot_options);
524 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT failed.");
526 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT succeeded.");
530 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
532 g_free (aot_options);
539 find_symbol (MonoDl *module, gpointer *globals, const char *name, gpointer *value)
545 for (i = 0; globals [i]; i+= 2) {
546 if (strcmp (globals [i], name) == 0) {
547 *value = globals [i + 1];
552 mono_dl_symbol (module, name, value);
557 load_aot_module (MonoAssembly *assembly, gpointer user_data)
560 MonoAotModule *amodule;
562 gboolean usable = TRUE;
563 char *saved_guid = NULL;
564 char *aot_version = NULL;
565 char *runtime_version;
566 char *opt_flags = NULL;
568 gboolean full_aot = FALSE;
569 gpointer *plt_jump_table_addr = NULL;
570 guint32 *plt_jump_table_size = NULL;
571 guint32 *trampolines_info = NULL;
572 gpointer *got_addr = NULL;
573 gpointer *got = NULL;
574 guint32 *got_size_ptr = NULL;
577 if (mono_compile_aot)
580 if (assembly->image->aot_module)
582 * Already loaded. This can happen because the assembly loading code might invoke
583 * the assembly load hooks multiple times for the same assembly.
587 if (assembly->image->dynamic)
591 if (static_aot_modules)
592 globals = g_hash_table_lookup (static_aot_modules, assembly->aname.name);
598 /* Statically linked AOT module */
600 aot_name = g_strdup_printf ("%s", assembly->aname.name);
601 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "Found statically linked AOT module '%s'.\n", aot_name);
603 TlsSetValue (globals_tls_id, NULL);
606 sofile = load_aot_module_from_cache (assembly, &aot_name);
609 aot_name = g_strdup_printf ("%s%s", assembly->image->name, SHARED_EXT);
611 sofile = mono_dl_open (aot_name, MONO_DL_LAZY, &err);
614 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed to load AOT module %s: %s\n", aot_name, err);
620 * If the image was compiled in no-dlsym mode, it contains no global symbols,
621 * instead it contains an ELF ctor function which is called by dlopen () which
622 * in turn calls mono_aot_register_globals () to register a table which contains
623 * the name and address of the globals.
625 globals = TlsGetValue (globals_tls_id);
626 TlsSetValue (globals_tls_id, NULL);
629 if (!sofile && !globals) {
631 fprintf (stderr, "Failed to load AOT module '%s' in aot-only mode.\n", aot_name);
638 find_symbol (sofile, globals, "mono_assembly_guid", (gpointer *) &saved_guid);
639 find_symbol (sofile, globals, "mono_aot_version", (gpointer *) &aot_version);
640 find_symbol (sofile, globals, "mono_aot_opt_flags", (gpointer *)&opt_flags);
641 find_symbol (sofile, globals, "mono_runtime_version", (gpointer *)&runtime_version);
643 if (!aot_version || strcmp (aot_version, MONO_AOT_FILE_VERSION)) {
644 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);
648 if (!saved_guid || strcmp (assembly->image->guid, saved_guid)) {
649 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is out of date.\n", aot_name);
654 if (!runtime_version || ((strlen (runtime_version) > 0 && strcmp (runtime_version, FULL_VERSION)))) {
655 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, FULL_VERSION);
662 find_symbol (sofile, globals, "mono_aot_full_aot", (gpointer *)&full_aot_str);
664 if (full_aot_str && !strcmp (full_aot_str, "TRUE"))
668 if (mono_aot_only && !full_aot) {
669 fprintf (stderr, "Can't use AOT image '%s' in aot-only mode because it is not compiled with --aot=full.\n", aot_name);
672 if (!mono_aot_only && full_aot) {
673 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is compiled with --aot=full.\n", aot_name);
679 fprintf (stderr, "Failed to load AOT module '%s' while running in aot-only mode.\n", aot_name);
684 mono_dl_close (sofile);
685 assembly->image->aot_module = NULL;
689 find_symbol (sofile, globals, "got_addr", (gpointer *)&got_addr);
691 got = (gpointer*)*got_addr;
693 find_symbol (sofile, globals, "got_size", (gpointer *)&got_size_ptr);
694 g_assert (got_size_ptr);
696 amodule = g_new0 (MonoAotModule, 1);
697 amodule->aot_name = aot_name;
698 amodule->assembly = assembly;
700 amodule->got_size = *got_size_ptr;
701 amodule->got [0] = assembly->image;
702 amodule->globals = globals;
703 amodule->sofile = sofile;
705 sscanf (opt_flags, "%d", &amodule->opts);
707 /* Read image table */
709 guint32 table_len, i;
712 find_symbol (sofile, globals, "mono_image_table", (gpointer *)&table);
715 table_len = *(guint32*)table;
716 table += sizeof (guint32);
717 amodule->image_table = g_new0 (MonoImage*, table_len);
718 amodule->image_names = g_new0 (MonoAssemblyName, table_len);
719 amodule->image_guids = g_new0 (char*, table_len);
720 amodule->image_table_len = table_len;
721 for (i = 0; i < table_len; ++i) {
722 MonoAssemblyName *aname = &(amodule->image_names [i]);
724 aname->name = g_strdup (table);
725 table += strlen (table) + 1;
726 amodule->image_guids [i] = g_strdup (table);
727 table += strlen (table) + 1;
729 aname->culture = g_strdup (table);
730 table += strlen (table) + 1;
731 memcpy (aname->public_key_token, table, strlen (table) + 1);
732 table += strlen (table) + 1;
734 table = ALIGN_PTR_TO (table, 8);
735 aname->flags = *(guint32*)table;
737 aname->major = *(guint32*)table;
739 aname->minor = *(guint32*)table;
741 aname->build = *(guint32*)table;
743 aname->revision = *(guint32*)table;
748 /* Read method and method_info tables */
749 find_symbol (sofile, globals, "method_offsets", (gpointer*)&amodule->code_offsets);
750 find_symbol (sofile, globals, "methods", (gpointer*)&amodule->code);
751 find_symbol (sofile, globals, "methods_end", (gpointer*)&amodule->code_end);
752 find_symbol (sofile, globals, "method_info_offsets", (gpointer*)&amodule->method_info_offsets);
753 find_symbol (sofile, globals, "method_info", (gpointer*)&amodule->method_info);
754 find_symbol (sofile, globals, "ex_info_offsets", (gpointer*)&amodule->ex_info_offsets);
755 find_symbol (sofile, globals, "ex_info", (gpointer*)&amodule->ex_info);
756 find_symbol (sofile, globals, "method_order", (gpointer*)&amodule->method_order);
757 find_symbol (sofile, globals, "method_order_end", (gpointer*)&amodule->method_order_end);
758 find_symbol (sofile, globals, "class_info", (gpointer*)&amodule->class_info);
759 find_symbol (sofile, globals, "class_info_offsets", (gpointer*)&amodule->class_info_offsets);
760 find_symbol (sofile, globals, "class_name_table", (gpointer *)&amodule->class_name_table);
761 find_symbol (sofile, globals, "got_info", (gpointer*)&amodule->got_info);
762 find_symbol (sofile, globals, "got_info_offsets", (gpointer*)&amodule->got_info_offsets);
763 find_symbol (sofile, globals, "wrapper_info", (gpointer*)&amodule->wrapper_info);
764 find_symbol (sofile, globals, "trampolines", (gpointer*)&amodule->trampolines);
765 find_symbol (sofile, globals, "mem_end", (gpointer*)&amodule->mem_end);
767 amodule->mem_begin = amodule->code;
769 find_symbol (sofile, globals, "plt", (gpointer*)&amodule->plt);
770 find_symbol (sofile, globals, "plt_end", (gpointer*)&amodule->plt_end);
771 find_symbol (sofile, globals, "plt_info", (gpointer*)&amodule->plt_info);
773 find_symbol (sofile, globals, "plt_jump_table_addr", (gpointer *)&plt_jump_table_addr);
774 g_assert (plt_jump_table_addr);
775 amodule->plt_jump_table = (guint8*)*plt_jump_table_addr;
776 g_assert (amodule->plt_jump_table);
778 find_symbol (sofile, globals, "plt_jump_table_size", (gpointer *)&plt_jump_table_size);
779 g_assert (plt_jump_table_size);
780 amodule->plt_jump_table_size = *plt_jump_table_size;
782 find_symbol (sofile, globals, "trampolines_info", (gpointer *)&trampolines_info);
783 if (trampolines_info) {
784 amodule->num_trampolines = trampolines_info [0];
785 amodule->first_trampoline_got_offset = trampolines_info [1];
788 if (make_unreadable) {
789 #ifndef PLATFORM_WIN32
794 addr = amodule->mem_begin;
795 len = amodule->mem_end - amodule->mem_begin;
797 /* Round down in both directions to avoid modifying data which is not ours */
798 page_start = (guint8 *) (((gssize) (addr)) & ~ (PAGESIZE - 1)) + PAGESIZE;
799 pages = ((addr + len - page_start + PAGESIZE - 1) / PAGESIZE) - 1;
800 err = mprotect (page_start, pages * PAGESIZE, 0);
807 aot_code_low_addr = MIN (aot_code_low_addr, (gsize)amodule->code);
808 aot_code_high_addr = MAX (aot_code_high_addr, (gsize)amodule->code_end);
810 g_hash_table_insert (aot_modules, assembly, amodule);
813 mono_jit_info_add_aot_module (assembly->image, amodule->code, amodule->code_end);
815 assembly->image->aot_module = amodule;
818 * Since we store methoddef and classdef tokens when referring to methods/classes in
819 * referenced assemblies, we depend on the exact versions of the referenced assemblies.
820 * MS calls this 'hard binding'. This means we have to load all referenced assemblies
821 * non-lazily, since we can't handle out-of-date errors later.
823 for (i = 0; i < amodule->image_table_len; ++i)
824 load_image (amodule, i);
826 if (amodule->out_of_date) {
827 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);
829 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);
834 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT loaded AOT Module for %s.\n", assembly->image->name);
838 * mono_aot_register_globals:
840 * This is called by the ctor function in AOT images compiled with the
844 mono_aot_register_globals (gpointer *globals)
846 TlsSetValue (globals_tls_id, globals);
850 * mono_aot_register_module:
852 * This should be called by embedding code to register AOT modules statically linked
853 * into the executable. AOT_INFO should be the value of the
854 * 'mono_aot_module_<ASSEMBLY_NAME>_info' global symbol from the AOT module.
857 mono_aot_register_module (gpointer *aot_info)
865 /* Determine the assembly name */
866 find_symbol (NULL, globals, "mono_aot_assembly_name", (gpointer*)&aname);
869 /* This could be called before startup */
873 if (!static_aot_modules)
874 static_aot_modules = g_hash_table_new (g_str_hash, g_str_equal);
876 g_hash_table_insert (static_aot_modules, aname, globals);
885 InitializeCriticalSection (&aot_mutex);
886 aot_modules = g_hash_table_new (NULL, NULL);
887 globals_tls_id = TlsAlloc ();
889 mono_install_assembly_load_hook (load_aot_module, NULL);
891 if (getenv ("MONO_LASTAOT"))
892 mono_last_aot_method = atoi (getenv ("MONO_LASTAOT"));
893 if (getenv ("MONO_AOT_CACHE"))
894 use_aot_cache = TRUE;
898 decode_cached_class_info (MonoAotModule *module, MonoCachedClassInfo *info, guint8 *buf, guint8 **endbuf)
902 info->vtable_size = decode_value (buf, &buf);
903 if (info->vtable_size == -1)
906 flags = decode_value (buf, &buf);
907 info->ghcimpl = (flags >> 0) & 0x1;
908 info->has_finalize = (flags >> 1) & 0x1;
909 info->has_cctor = (flags >> 2) & 0x1;
910 info->has_nested_classes = (flags >> 3) & 0x1;
911 info->blittable = (flags >> 4) & 0x1;
912 info->has_references = (flags >> 5) & 0x1;
913 info->has_static_refs = (flags >> 6) & 0x1;
914 info->no_special_static_fields = (flags >> 7) & 0x1;
916 if (info->has_cctor) {
917 MonoImage *cctor_image = decode_method_ref (module, &info->cctor_token, NULL, buf, &buf);
921 if (info->has_finalize) {
922 info->finalize_image = decode_method_ref (module, &info->finalize_token, NULL, buf, &buf);
923 if (!info->finalize_image)
927 info->instance_size = decode_value (buf, &buf);
928 info->class_size = decode_value (buf, &buf);
929 info->packing_size = decode_value (buf, &buf);
930 info->min_align = decode_value (buf, &buf);
938 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
941 MonoClass *klass = vtable->klass;
942 MonoAotModule *aot_module = klass->image->aot_module;
944 MonoCachedClassInfo class_info;
949 if (MONO_CLASS_IS_INTERFACE (klass) || klass->rank || !aot_module)
952 info = &aot_module->class_info [aot_module->class_info_offsets [mono_metadata_token_index (klass->type_token) - 1]];
955 err = decode_cached_class_info (aot_module, &class_info, p, &p);
959 for (i = 0; i < slot; ++i)
960 decode_method_ref (aot_module, &token, NULL, p, &p);
962 image = decode_method_ref (aot_module, &token, NULL, p, &p);
966 return mono_aot_get_method_from_token (domain, image, token);
970 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
972 MonoAotModule *aot_module = klass->image->aot_module;
976 if (klass->rank || !aot_module)
979 p = (guint8*)&aot_module->class_info [aot_module->class_info_offsets [mono_metadata_token_index (klass->type_token) - 1]];
981 err = decode_cached_class_info (aot_module, res, p, &p);
989 * mono_aot_get_class_from_name:
991 * Obtains a MonoClass with a given namespace and a given name which is located in IMAGE,
992 * using a cache stored in the AOT file.
993 * Stores the resulting class in *KLASS if found, stores NULL otherwise.
995 * Returns: TRUE if the klass was found/not found in the cache, FALSE if no aot file was
999 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
1001 MonoAotModule *aot_module = image->aot_module;
1002 guint16 *table, *entry;
1005 char full_name_buf [1024];
1007 const char *name2, *name_space2;
1009 guint32 cols [MONO_TYPEDEF_SIZE];
1010 GHashTable *nspace_table;
1012 if (!aot_module || !aot_module->class_name_table)
1019 /* First look in the cache */
1020 if (!aot_module->name_cache)
1021 aot_module->name_cache = g_hash_table_new (g_str_hash, g_str_equal);
1022 nspace_table = g_hash_table_lookup (aot_module->name_cache, name_space);
1024 *klass = g_hash_table_lookup (nspace_table, name);
1031 table_size = aot_module->class_name_table [0];
1032 table = aot_module->class_name_table + 1;
1034 if (name_space [0] == '\0')
1035 full_name = g_strdup_printf ("%s", name);
1037 if (strlen (name_space) + strlen (name) < 1000) {
1038 sprintf (full_name_buf, "%s.%s", name_space, name);
1039 full_name = full_name_buf;
1041 full_name = g_strdup_printf ("%s.%s", name_space, name);
1044 hash = g_str_hash (full_name) % table_size;
1045 if (full_name != full_name_buf)
1048 entry = &table [hash * 2];
1050 if (entry [0] != 0) {
1051 t = &image->tables [MONO_TABLE_TYPEDEF];
1054 guint32 index = entry [0];
1055 guint32 next = entry [1];
1056 guint32 token = mono_metadata_make_token (MONO_TABLE_TYPEDEF, index);
1058 name_table_accesses ++;
1060 mono_metadata_decode_row (t, index - 1, cols, MONO_TYPEDEF_SIZE);
1062 name2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
1063 name_space2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
1065 if (!strcmp (name, name2) && !strcmp (name_space, name_space2)) {
1067 *klass = mono_class_get (image, token);
1072 nspace_table = g_hash_table_lookup (aot_module->name_cache, name_space);
1073 if (!nspace_table) {
1074 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
1075 g_hash_table_insert (aot_module->name_cache, (char*)name_space2, nspace_table);
1077 g_hash_table_insert (nspace_table, (char*)name2, *klass);
1084 entry = &table [next * 2];
1097 decode_exception_debug_info (MonoAotModule *aot_module, MonoDomain *domain,
1098 MonoMethod *method, guint8* ex_info, guint8 *code)
1102 guint code_len, used_int_regs;
1104 MonoMethodHeader *header;
1106 header = mono_method_get_header (method);
1108 /* Load the method info from the AOT file */
1111 code_len = decode_value (p, &p);
1112 used_int_regs = decode_value (p, &p);
1114 /* Exception table */
1115 if (header && header->num_clauses) {
1117 mono_mempool_alloc0 (domain->mp, sizeof (MonoJitInfo) + (sizeof (MonoJitExceptionInfo) * header->num_clauses));
1118 jinfo->num_clauses = header->num_clauses;
1120 for (i = 0; i < header->num_clauses; ++i) {
1121 MonoExceptionClause *ec = &header->clauses [i];
1122 MonoJitExceptionInfo *ei = &jinfo->clauses [i];
1124 ei->flags = ec->flags;
1125 ei->exvar_offset = decode_value (p, &p);
1127 if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER)
1128 ei->data.filter = code + decode_value (p, &p);
1130 ei->data.catch_class = ec->data.catch_class;
1132 ei->try_start = code + decode_value (p, &p);
1133 ei->try_end = code + decode_value (p, &p);
1134 ei->handler_start = code + decode_value (p, &p);
1138 jinfo = mono_mempool_alloc0 (domain->mp, sizeof (MonoJitInfo));
1140 jinfo->code_size = code_len;
1141 jinfo->used_regs = used_int_regs;
1142 jinfo->method = method;
1143 jinfo->code_start = code;
1144 jinfo->domain_neutral = 0;
1146 /* Load debug info */
1147 buf_len = decode_value (p, &p);
1148 mono_debug_add_aot_method (domain, method, code, p, buf_len);
1154 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
1156 int pos, left, right, offset, offset1, offset2, last_offset, new_offset, page_index, method_index, table_len;
1158 MonoAotModule *aot_module = image->aot_module;
1161 guint8 *code, *ex_info;
1162 guint32 *table, *ptr;
1168 if (domain != mono_get_root_domain ())
1172 offset = (guint8*)addr - aot_module->code;
1174 /* First search through the index */
1175 ptr = aot_module->method_order;
1180 if (*ptr == 0xffffff)
1184 while (*ptr != 0xffffff) {
1185 guint32 method_index = ptr [0];
1186 new_offset = aot_module->code_offsets [method_index];
1188 if (offset >= last_offset && offset < new_offset) {
1194 last_offset = new_offset;
1198 /* Skip rest of index */
1199 while (*ptr != 0xffffff)
1204 table_len = aot_module->method_order_end - table;
1206 g_assert (table <= aot_module->method_order_end);
1209 left = (page_index * 1024);
1210 right = left + 1024;
1212 if (right > table_len)
1215 offset1 = aot_module->code_offsets [table [left]];
1216 g_assert (offset1 <= offset);
1218 //printf ("Found in index: 0x%x 0x%x 0x%x\n", offset, last_offset, new_offset);
1221 //printf ("Not found in index: 0x%x\n", offset);
1226 /* Binary search inside the method_order table to find the method */
1228 pos = (left + right) / 2;
1230 g_assert (table + pos <= aot_module->method_order_end);
1232 //printf ("Pos: %5d < %5d < %5d Offset: 0x%05x < 0x%05x < 0x%05x\n", left, pos, right, aot_module->code_offsets [table [left]], offset, aot_module->code_offsets [table [right]]);
1234 offset1 = aot_module->code_offsets [table [pos]];
1235 if (table + pos + 1 >= aot_module->method_order_end)
1236 offset2 = aot_module->code_end - aot_module->code;
1238 offset2 = aot_module->code_offsets [table [pos + 1]];
1240 if (offset < offset1)
1242 else if (offset >= offset2)
1248 method_index = table [pos];
1250 /* Might be a wrapper */
1251 if (aot_module->wrappers) {
1253 method = g_hash_table_lookup (aot_module->wrappers, GUINT_TO_POINTER (method_index));
1260 token = mono_metadata_make_token (MONO_TABLE_METHOD, method_index + 1);
1261 method = mono_get_method (image, token, NULL);
1267 //printf ("F: %s\n", mono_method_full_name (method, TRUE));
1269 code = &aot_module->code [aot_module->code_offsets [method_index]];
1270 ex_info = &aot_module->ex_info [aot_module->ex_info_offsets [method_index]];
1272 jinfo = decode_exception_debug_info (aot_module, domain, method, ex_info, code);
1274 g_assert ((guint8*)addr >= (guint8*)jinfo->code_start);
1275 g_assert ((guint8*)addr < (guint8*)jinfo->code_start + jinfo->code_size);
1277 /* Add it to the normal JitInfo tables */
1278 mono_jit_info_table_add (domain, jinfo);
1283 /* Keep it in sync with the version in aot-compiler.c */
1284 static inline gboolean
1285 is_shared_got_patch (MonoJumpInfo *patch_info)
1287 switch (patch_info->type) {
1288 case MONO_PATCH_INFO_VTABLE:
1289 case MONO_PATCH_INFO_CLASS:
1290 case MONO_PATCH_INFO_IID:
1291 case MONO_PATCH_INFO_ADJUSTED_IID:
1292 case MONO_PATCH_INFO_FIELD:
1293 case MONO_PATCH_INFO_SFLDA:
1294 case MONO_PATCH_INFO_DECLSEC:
1295 case MONO_PATCH_INFO_LDTOKEN:
1296 case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
1297 case MONO_PATCH_INFO_RVA:
1298 case MONO_PATCH_INFO_METHODCONST:
1306 decode_patch_info (MonoAotModule *aot_module, MonoMemPool *mp, MonoJumpInfo *ji, guint8 *buf, guint8 **endbuf, guint32 *got_offset)
1314 if (is_shared_got_patch (ji)) {
1315 *got_offset = decode_value (p, &p);
1317 if (aot_module->got [*got_offset]) {
1318 /* Already loaded */
1319 //printf ("HIT!\n");
1323 shared_p = aot_module->got_info + aot_module->got_info_offsets [*got_offset];
1328 case MONO_PATCH_INFO_METHOD:
1329 case MONO_PATCH_INFO_METHOD_JUMP:
1330 case MONO_PATCH_INFO_ICALL_ADDR:
1331 case MONO_PATCH_INFO_METHOD_RGCTX: {
1335 image = decode_method_ref (aot_module, &token, &method, p, &p);
1339 #ifdef MONO_ARCH_HAVE_CREATE_TRAMPOLINE_FROM_TOKEN
1340 if (!method && !mono_aot_only && (ji->type == MONO_PATCH_INFO_METHOD) && (mono_metadata_token_table (token) == MONO_TABLE_METHOD)) {
1341 ji->data.target = mono_create_jit_trampoline_from_token (image, token);
1342 ji->type = MONO_PATCH_INFO_ABS;
1346 ji->data.method = method;
1348 ji->data.method = mono_get_method (image, token, NULL);
1349 g_assert (ji->data.method);
1350 mono_class_init (ji->data.method->klass);
1353 ji->data.method = mono_get_method (image, token, NULL);
1354 g_assert (ji->data.method);
1355 mono_class_init (ji->data.method->klass);
1360 case MONO_PATCH_INFO_WRAPPER: {
1361 guint32 wrapper_type;
1363 wrapper_type = decode_value (p, &p);
1365 ji->type = MONO_PATCH_INFO_METHOD;
1367 switch (wrapper_type) {
1368 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK: {
1369 guint32 image_index, token, value;
1371 value = decode_value (p, &p);
1372 image_index = value >> 24;
1373 token = MONO_TOKEN_METHOD_DEF | (value & 0xffffff);
1375 image = load_image (aot_module, image_index);
1378 ji->data.method = mono_get_method (image, token, NULL);
1379 g_assert (ji->data.method);
1380 mono_class_init (ji->data.method->klass);
1382 ji->data.method = mono_marshal_get_remoting_invoke_with_check (ji->data.method);
1385 case MONO_WRAPPER_PROXY_ISINST: {
1386 MonoClass *klass = decode_klass_ref (aot_module, p, &p);
1389 ji->data.method = mono_marshal_get_proxy_cancast (klass);
1392 case MONO_WRAPPER_LDFLD:
1393 case MONO_WRAPPER_LDFLDA:
1394 case MONO_WRAPPER_STFLD:
1395 case MONO_WRAPPER_ISINST: {
1396 MonoClass *klass = decode_klass_ref (aot_module, p, &p);
1399 if (wrapper_type == MONO_WRAPPER_LDFLD)
1400 ji->data.method = mono_marshal_get_ldfld_wrapper (&klass->byval_arg);
1401 else if (wrapper_type == MONO_WRAPPER_LDFLDA)
1402 ji->data.method = mono_marshal_get_ldflda_wrapper (&klass->byval_arg);
1403 else if (wrapper_type == MONO_WRAPPER_STFLD)
1404 ji->data.method = mono_marshal_get_stfld_wrapper (&klass->byval_arg);
1405 else if (wrapper_type == MONO_WRAPPER_ISINST)
1406 ji->data.method = mono_marshal_get_isinst (klass);
1408 g_assert_not_reached ();
1411 case MONO_WRAPPER_LDFLD_REMOTE:
1412 ji->data.method = mono_marshal_get_ldfld_remote_wrapper (NULL);
1414 case MONO_WRAPPER_STFLD_REMOTE:
1415 ji->data.method = mono_marshal_get_stfld_remote_wrapper (NULL);
1417 case MONO_WRAPPER_ALLOC: {
1418 int atype = decode_value (p, &p);
1420 ji->data.method = mono_gc_get_managed_allocator_by_type (atype);
1423 case MONO_WRAPPER_STELEMREF:
1424 ji->data.method = mono_marshal_get_stelemref ();
1427 g_assert_not_reached ();
1431 case MONO_PATCH_INFO_INTERNAL_METHOD:
1432 case MONO_PATCH_INFO_JIT_ICALL_ADDR: {
1433 guint32 len = decode_value (p, &p);
1435 ji->data.name = (char*)p;
1439 case MONO_PATCH_INFO_METHODCONST: {
1444 image = decode_method_ref (aot_module, &token, &method, shared_p, &shared_p);
1449 ji->data.method = method;
1451 ji->data.method = mono_get_method (image, token, NULL);
1452 if (!ji->data.method)
1456 case MONO_PATCH_INFO_VTABLE:
1457 case MONO_PATCH_INFO_CLASS:
1458 case MONO_PATCH_INFO_IID:
1459 case MONO_PATCH_INFO_ADJUSTED_IID:
1461 ji->data.klass = decode_klass_ref (aot_module, shared_p, &shared_p);
1462 if (!ji->data.klass)
1465 case MONO_PATCH_INFO_CLASS_INIT:
1466 case MONO_PATCH_INFO_DELEGATE_TRAMPOLINE:
1467 ji->data.klass = decode_klass_ref (aot_module, p, &p);
1468 if (!ji->data.klass)
1471 case MONO_PATCH_INFO_IMAGE:
1472 ji->data.image = load_image (aot_module, decode_value (p, &p));
1473 if (!ji->data.image)
1475 if (ji->data.image == aot_module->assembly->image)
1478 case MONO_PATCH_INFO_FIELD:
1479 case MONO_PATCH_INFO_SFLDA:
1481 ji->data.field = decode_field_info (aot_module, shared_p, &shared_p);
1482 if (!ji->data.field)
1485 case MONO_PATCH_INFO_SWITCH:
1486 ji->data.table = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoBBTable));
1487 ji->data.table->table_size = decode_value (p, &p);
1488 table = g_new (gpointer, ji->data.table->table_size);
1489 ji->data.table->table = (MonoBasicBlock**)table;
1490 for (i = 0; i < ji->data.table->table_size; i++)
1491 table [i] = (gpointer)(gssize)decode_value (p, &p);
1493 case MONO_PATCH_INFO_R4: {
1496 ji->data.target = mono_mempool_alloc0 (mp, sizeof (float));
1497 val = decode_value (p, &p);
1498 *(float*)ji->data.target = *(float*)&val;
1501 case MONO_PATCH_INFO_R8: {
1504 ji->data.target = mono_mempool_alloc0 (mp, sizeof (double));
1506 val [0] = decode_value (p, &p);
1507 val [1] = decode_value (p, &p);
1508 *(double*)ji->data.target = *(double*)val;
1511 case MONO_PATCH_INFO_LDSTR:
1512 image = load_image (aot_module, decode_value (p, &p));
1515 ji->data.token = mono_jump_info_token_new (mp, image, MONO_TOKEN_STRING + decode_value (p, &p));
1517 case MONO_PATCH_INFO_RVA:
1518 case MONO_PATCH_INFO_DECLSEC:
1519 case MONO_PATCH_INFO_LDTOKEN:
1520 case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
1522 image = load_image (aot_module, decode_value (shared_p, &shared_p));
1525 ji->data.token = mono_jump_info_token_new (mp, image, decode_value (shared_p, &shared_p));
1527 case MONO_PATCH_INFO_EXC_NAME:
1528 ji->data.klass = decode_klass_ref (aot_module, p, &p);
1529 if (!ji->data.klass)
1531 ji->data.name = ji->data.klass->name;
1533 case MONO_PATCH_INFO_METHOD_REL:
1534 ji->data.offset = decode_value (p, &p);
1536 case MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG:
1539 g_warning ("unhandled type %d", ji->type);
1540 g_assert_not_reached ();
1551 static MonoJumpInfo*
1552 load_patch_info (MonoAotModule *aot_module, MonoMemPool *mp, int n_patches,
1553 guint32 got_index, guint32 **got_slots,
1554 guint8 *buf, guint8 **endbuf)
1556 MonoJumpInfo *patches;
1557 MonoJumpInfo *patch_info = NULL;
1559 guint32 last_offset;
1564 /* First load the type + offset table */
1566 patches = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo) * n_patches);
1568 for (pindex = 0; pindex < n_patches; ++pindex) {
1569 MonoJumpInfo *ji = &patches [pindex];
1574 //printf ("T: %d O: %d.\n", ji->type, ji->ip.i);
1575 ji->next = patch_info;
1579 *got_slots = g_malloc (sizeof (guint32) * n_patches);
1580 memset (*got_slots, 0xff, sizeof (guint32) * n_patches);
1582 /* Then load the other data */
1583 for (pindex = 0; pindex < n_patches; ++pindex) {
1584 MonoJumpInfo *ji = &patches [pindex];
1586 if (!decode_patch_info (aot_module, mp, ji, p, &p, (*got_slots) + pindex))
1589 if ((*got_slots) [pindex] == 0xffffffff)
1590 (*got_slots) [pindex] = got_index ++;
1597 g_free (*got_slots);
1604 register_jump_target_got_slot (MonoDomain *domain, MonoMethod *method, gpointer *got_slot)
1607 * Jump addresses cannot be patched by the trampoline code since it
1608 * does not have access to the caller's address. Instead, we collect
1609 * the addresses of the GOT slots pointing to a method, and patch
1610 * them after the method has been compiled.
1612 MonoJitDomainInfo *info = jit_domain_info (domain);
1615 mono_domain_lock (domain);
1616 if (!info->jump_target_got_slot_hash)
1617 info->jump_target_got_slot_hash = g_hash_table_new (NULL, NULL);
1618 list = g_hash_table_lookup (info->jump_target_got_slot_hash, method);
1619 list = g_slist_prepend (list, got_slot);
1620 g_hash_table_insert (info->jump_target_got_slot_hash, method, list);
1621 mono_domain_unlock (domain);
1625 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
1627 MonoClass *klass = method->klass;
1628 guint32 method_index = mono_metadata_token_index (method->token) - 1;
1629 guint8 *code, *info;
1630 MonoAotModule *aot_module = klass->image->aot_module;
1635 if (mono_profiler_get_events () & MONO_PROFILE_ENTER_LEAVE)
1638 if ((method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
1639 (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
1640 (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
1641 (method->flags & METHOD_ATTRIBUTE_ABSTRACT))
1644 g_assert (klass->inited);
1646 if ((domain != mono_get_root_domain ()) && (!(aot_module->opts & MONO_OPT_SHARED)))
1647 /* Non shared AOT code can't be used in other appdomains */
1650 if (aot_module->out_of_date)
1653 if (method->is_inflated) {
1654 if (!mono_method_is_generic_sharable_impl (method, FALSE))
1656 method = mono_method_get_declaring_generic_method (method);
1659 if (!method->token) {
1663 if (!method->wrapper_type || !aot_module->wrapper_info)
1666 /* Try to find the wrapper among the wrapper info */
1667 full_name = mono_method_full_name (method, TRUE);
1668 p = (char*)aot_module->wrapper_info;
1672 end = p + strlen (p) + 1;
1673 end = ALIGN_PTR_TO (end, 4);
1674 method_index = *(guint32*)end;
1676 if (strcmp (full_name, p) == 0)
1686 /* Needed by find_jit_info */
1688 if (!aot_module->wrappers)
1689 aot_module->wrappers = g_hash_table_new (NULL, NULL);
1690 g_hash_table_insert (aot_module->wrappers, GUINT_TO_POINTER (method_index), method);
1694 if (aot_module->code_offsets [method_index] == 0xffffffff) {
1695 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
1696 char *full_name = mono_method_full_name (method, TRUE);
1697 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.\n", full_name);
1703 code = &aot_module->code [aot_module->code_offsets [method_index]];
1704 info = &aot_module->method_info [aot_module->method_info_offsets [method_index]];
1707 if (!aot_module->methods_loaded)
1708 aot_module->methods_loaded = g_new0 (guint32, klass->image->tables [MONO_TABLE_METHOD].rows + 1);
1711 if ((aot_module->methods_loaded [method_index / 32] >> (method_index % 32)) & 0x1)
1714 if (mono_last_aot_method != -1) {
1715 if (mono_jit_stats.methods_aot > mono_last_aot_method)
1718 if (mono_jit_stats.methods_aot == mono_last_aot_method)
1719 printf ("LAST AOT METHOD: %s.%s.%s.\n", klass->name_space, klass->name, method->name);
1722 return mono_aot_load_method (domain, aot_module, method, code, info, method_index);
1726 mono_aot_load_method (MonoDomain *domain, MonoAotModule *aot_module, MonoMethod *method, guint8 *code, guint8 *info, int method_index)
1728 MonoClass *klass = method->klass;
1729 MonoJumpInfo *patch_info = NULL;
1731 int i, pindex, got_index = 0, n_patches, used_strings;
1732 gboolean non_got_patches, keep_patches = TRUE;
1733 guint8 *p, *ex_info;
1734 MonoJitInfo *jinfo = NULL;
1737 decode_klass_ref (aot_module, p, &p);
1739 if (!use_loaded_code) {
1743 ex_info = &aot_module->ex_info [aot_module->ex_info_offsets [mono_metadata_token_index (method->token) - 1]];
1744 jinfo = decode_exception_debug_info (aot_module, domain, method, ex_info, code);
1747 mono_domain_lock (domain);
1748 code2 = mono_code_manager_reserve (domain->code_mp, jinfo->code_size);
1749 mono_domain_unlock (domain);
1750 memcpy (code2, code, jinfo->code_size);
1751 mono_arch_flush_icache (code2, jinfo->code_size);
1755 if (aot_module->opts & MONO_OPT_SHARED)
1756 used_strings = decode_value (p, &p);
1760 for (i = 0; i < used_strings; i++) {
1761 guint token = decode_value (p, &p);
1762 mono_ldstr (mono_get_root_domain (), klass->image, mono_metadata_token_index (token));
1765 if (aot_module->opts & MONO_OPT_SHARED)
1766 keep_patches = FALSE;
1768 n_patches = decode_value (p, &p);
1770 keep_patches = FALSE;
1773 MonoJumpInfo *patches;
1779 mp = mono_mempool_new ();
1781 got_index = decode_value (p, &p);
1783 patches = load_patch_info (aot_module, mp, n_patches, got_index, &got_slots, p, &p);
1784 if (patches == NULL)
1787 non_got_patches = FALSE;
1788 for (pindex = 0; pindex < n_patches; ++pindex) {
1789 MonoJumpInfo *ji = &patches [pindex];
1791 if (is_got_patch (ji->type)) {
1792 if (!aot_module->got [got_slots [pindex]]) {
1793 aot_module->got [got_slots [pindex]] = mono_resolve_patch_target (method, domain, code, ji, TRUE);
1794 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
1795 register_jump_target_got_slot (domain, ji->data.method, &(aot_module->got [got_slots [pindex]]));
1797 ji->type = MONO_PATCH_INFO_NONE;
1800 non_got_patches = TRUE;
1802 if (non_got_patches) {
1804 ex_info = &aot_module->ex_info [aot_module->ex_info_offsets [mono_metadata_token_index (method->token) - 1]];
1805 jinfo = decode_exception_debug_info (aot_module, domain, method, ex_info, code);
1808 mono_arch_flush_icache (code, jinfo->code_size);
1809 make_writable (code, jinfo->code_size);
1810 mono_arch_patch_code (method, domain, code, patch_info, TRUE);
1816 mono_mempool_destroy (mp);
1821 mono_jit_stats.methods_aot++;
1823 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
1824 char *full_name = mono_method_full_name (method, TRUE);
1827 ex_info = &aot_module->ex_info [aot_module->ex_info_offsets [method_index]];
1828 jinfo = decode_exception_debug_info (aot_module, domain, method, ex_info, code);
1831 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);
1835 aot_module->methods_loaded [method_index / 32] |= 1 << (method_index % 32);
1837 init_plt (aot_module);
1844 /* FIXME: The space in domain->mp is wasted */
1845 if (aot_module->opts & MONO_OPT_SHARED)
1846 /* No need to cache patches */
1847 mono_mempool_destroy (mp);
1856 * Same as mono_aot_get_method, but we try to avoid loading any metadata from the
1860 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
1863 int i, method_index, pindex, got_index, n_patches, used_strings;
1864 gboolean keep_patches = TRUE;
1866 guint8 *code = NULL;
1868 MonoAotModule *aot_module = image->aot_module;
1874 if (mono_profiler_get_events () & MONO_PROFILE_ENTER_LEAVE)
1877 if (domain != mono_get_root_domain ())
1880 if (aot_module->out_of_date)
1883 if (aot_module->code_offsets [mono_metadata_token_index (token) - 1] == 0xffffffff) {
1887 method_index = mono_metadata_token_index (token) - 1;
1888 code = &aot_module->code [aot_module->code_offsets [method_index]];
1889 info = &aot_module->method_info [aot_module->method_info_offsets [method_index]];
1892 if (!aot_module->methods_loaded)
1893 aot_module->methods_loaded = g_new0 (guint32, image->tables [MONO_TABLE_METHOD].rows + 1);
1896 if ((aot_module->methods_loaded [method_index / 32] >> (method_index % 32)) & 0x1)
1899 if (mono_last_aot_method != -1) {
1900 if (mono_jit_stats.methods_aot > mono_last_aot_method)
1903 if (mono_jit_stats.methods_aot == mono_last_aot_method) {
1904 MonoMethod *method = mono_get_method (image, token, NULL);
1905 printf ("LAST AOT METHOD: %s.%s.%s.\n", method->klass->name_space, method->klass->name, method->name);
1910 klass = decode_klass_ref (aot_module, p, &p);
1912 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
1913 MonoMethod *method = mono_get_method (image, token, NULL);
1914 char *full_name = mono_method_full_name (method, TRUE);
1915 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT FOUND AOT compiled code for %s %p %p\n", full_name, code, info);
1919 if (aot_module->opts & MONO_OPT_SHARED)
1920 used_strings = decode_value (p, &p);
1924 for (i = 0; i < used_strings; i++) {
1925 guint string_token = decode_value (p, &p);
1926 mono_ldstr (mono_get_root_domain (), image, mono_metadata_token_index (string_token));
1929 if (aot_module->opts & MONO_OPT_SHARED)
1930 keep_patches = FALSE;
1932 keep_patches = FALSE;
1934 n_patches = decode_value (p, &p);
1937 MonoJumpInfo *patches;
1943 mp = mono_mempool_new ();
1945 got_index = decode_value (p, &p);
1947 patches = load_patch_info (aot_module, mp, n_patches, got_index, &got_slots, p, &p);
1948 if (patches == NULL)
1951 for (pindex = 0; pindex < n_patches; ++pindex) {
1952 MonoJumpInfo *ji = &patches [pindex];
1954 if (is_got_patch (ji->type)) {
1955 if (!aot_module->got [got_slots [pindex]]) {
1956 aot_module->got [got_slots [pindex]] = mono_resolve_patch_target (NULL, domain, code, ji, TRUE);
1957 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
1958 register_jump_target_got_slot (domain, ji->data.method, &(aot_module->got [got_slots [pindex]]));
1960 ji->type = MONO_PATCH_INFO_NONE;
1967 mono_mempool_destroy (mp);
1970 mono_jit_stats.methods_aot++;
1974 aot_module->methods_loaded [method_index / 32] |= 1 << (method_index % 32);
1976 init_plt (aot_module);
1981 mono_runtime_class_init (mono_class_vtable (domain, klass));
1986 /* FIXME: The space in domain->mp is wasted */
1987 if (aot_module->opts & MONO_OPT_SHARED)
1988 /* No need to cache patches */
1989 mono_mempool_destroy (mp);
1997 } IsGotEntryUserData;
2000 check_is_got_entry (gpointer key, gpointer value, gpointer user_data)
2002 IsGotEntryUserData *data = (IsGotEntryUserData*)user_data;
2003 MonoAotModule *aot_module = (MonoAotModule*)value;
2005 if (aot_module->got && (data->addr >= (guint8*)(aot_module->got)) && (data->addr < (guint8*)(aot_module->got + aot_module->got_size)))
2010 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
2012 IsGotEntryUserData user_data;
2017 user_data.addr = addr;
2018 user_data.res = FALSE;
2020 g_hash_table_foreach (aot_modules, check_is_got_entry, &user_data);
2023 return user_data.res;
2028 MonoAotModule *module;
2029 } FindAotModuleUserData;
2032 find_aot_module_cb (gpointer key, gpointer value, gpointer user_data)
2034 FindAotModuleUserData *data = (FindAotModuleUserData*)user_data;
2035 MonoAotModule *aot_module = (MonoAotModule*)value;
2037 if ((data->addr >= (guint8*)(aot_module->code)) && (data->addr < (guint8*)(aot_module->code_end)))
2038 data->module = aot_module;
2041 static inline MonoAotModule*
2042 find_aot_module (guint8 *code)
2044 FindAotModuleUserData user_data;
2049 /* Reading these need no locking */
2050 if (((gsize)code < aot_code_low_addr) || ((gsize)code > aot_code_high_addr))
2053 user_data.addr = code;
2054 user_data.module = NULL;
2057 g_hash_table_foreach (aot_modules, find_aot_module_cb, &user_data);
2060 return user_data.module;
2064 * mono_aot_set_make_unreadable:
2066 * Set whenever to make all mmaped memory unreadable. In conjuction with a
2067 * SIGSEGV handler, this is useful to find out which pages the runtime tries to read.
2070 mono_aot_set_make_unreadable (gboolean unreadable)
2072 make_unreadable = unreadable;
2076 MonoAotModule *module;
2081 find_map (gpointer key, gpointer value, gpointer user_data)
2083 MonoAotModule *module = (MonoAotModule*)value;
2084 FindMapUserData *data = (FindMapUserData*)user_data;
2087 if ((data->ptr >= module->mem_begin) && (data->ptr < module->mem_end))
2088 data->module = module;
2091 static MonoAotModule*
2092 find_module_for_addr (void *ptr)
2094 FindMapUserData data;
2096 if (!make_unreadable)
2100 data.ptr = (guint8*)ptr;
2103 g_hash_table_foreach (aot_modules, (GHFunc)find_map, &data);
2110 * mono_aot_is_pagefault:
2112 * Should be called from a SIGSEGV signal handler to find out whenever @ptr is
2113 * within memory allocated by this module.
2116 mono_aot_is_pagefault (void *ptr)
2118 if (!make_unreadable)
2121 return find_module_for_addr (ptr) != NULL;
2125 * mono_aot_handle_pagefault:
2127 * Handle a pagefault caused by an unreadable page by making it readable again.
2130 mono_aot_handle_pagefault (void *ptr)
2132 #ifndef PLATFORM_WIN32
2133 guint8* start = (guint8*)ROUND_DOWN (((gssize)ptr), PAGESIZE);
2137 res = mprotect (start, PAGESIZE, PROT_READ|PROT_WRITE|PROT_EXEC);
2138 g_assert (res == 0);
2149 printf ("\nNative stacktrace:\n\n");
2151 size = backtrace (array, 256);
2152 names = backtrace_symbols (array, size);
2153 for (i =0; i < size; ++i) {
2154 printf ("\t%s\n", names [i]);
2164 * mono_aot_plt_resolve:
2166 * This function is called by the entries in the PLT to resolve the actual method that
2167 * needs to be called. It returns a trampoline to the method and patches the PLT entry.
2170 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
2172 #ifdef MONO_ARCH_AOT_SUPPORTED
2173 guint8 *p, *target, *plt_entry;
2175 MonoAotModule *module = (MonoAotModule*)aot_module;
2178 //printf ("DYN: %p %d\n", aot_module, plt_info_offset);
2180 p = &module->plt_info [plt_info_offset];
2182 ji.type = decode_value (p, &p);
2184 res = decode_patch_info (module, NULL, &ji, p, &p, NULL);
2185 // FIXME: Error handling (how ?)
2188 target = mono_resolve_patch_target (NULL, mono_domain_get (), NULL, &ji, TRUE);
2190 /* Patch the PLT entry with target which might be the actual method not a trampoline */
2191 plt_entry = mono_aot_get_plt_entry (code);
2192 g_assert (plt_entry);
2193 mono_arch_patch_plt_entry (plt_entry, target);
2197 g_assert_not_reached ();
2205 * Initialize the PLT table of the AOT module. Called lazily when the first AOT
2206 * method in the module is loaded to avoid committing memory by writing to it.
2207 * LOCKING: Assumes the AOT lock is held.
2210 init_plt (MonoAotModule *info)
2212 #ifdef MONO_ARCH_AOT_SUPPORTED
2214 guint8 *buf = info->plt;
2215 #elif defined(__x86_64__)
2217 #elif defined(__arm__)
2222 if (info->plt_inited)
2225 tramp = mono_create_specific_trampoline (info, MONO_TRAMPOLINE_AOT_PLT, mono_get_root_domain (), NULL);
2228 /* Initialize the first PLT entry */
2229 make_writable (info->plt, info->plt_end - info->plt);
2230 x86_jump_code (buf, tramp);
2231 #elif defined(__x86_64__) || defined(__arm__)
2233 * Initialize the entries in the plt_jump_table to point to the default targets.
2235 n_entries = info->plt_jump_table_size / sizeof (gpointer);
2237 /* The first entry points to the AOT trampoline */
2238 ((gpointer*)info->plt_jump_table)[0] = tramp;
2239 for (i = 1; i < n_entries; ++i)
2240 /* All the default entries point to the first entry */
2241 ((gpointer*)info->plt_jump_table)[i] = info->plt;
2243 g_assert_not_reached ();
2246 info->plt_inited = TRUE;
2251 * mono_aot_get_plt_entry:
2253 * Return the address of the PLT entry called by the code at CODE if exists.
2256 mono_aot_get_plt_entry (guint8 *code)
2258 MonoAotModule *aot_module = find_aot_module (code);
2259 #if defined(__arm__)
2266 #if defined(__i386__) || defined(__x86_64__)
2267 if (code [-5] == 0xe8) {
2268 guint32 disp = *(guint32*)(code - 4);
2269 guint8 *target = code + disp;
2271 if ((target >= (guint8*)(aot_module->plt)) && (target < (guint8*)(aot_module->plt_end)))
2274 #elif defined(__arm__)
2275 ins = ((guint32*)(gpointer)code) [-1];
2277 /* Should be a 'bl' */
2278 if ((((ins >> 25) & 0x7) == 0x5) && (((ins >> 24) & 0x1) == 0x1)) {
2279 gint32 disp = ((gint32)ins) & 0xffffff;
2280 guint8 *target = code - 4 + 8 + (disp * 4);
2282 if ((target >= (guint8*)(aot_module->plt)) && (target < (guint8*)(aot_module->plt_end)))
2286 g_assert_not_reached ();
2293 * mono_aot_get_plt_info_offset:
2295 * Return the PLT info offset belonging to the plt entry called by CODE.
2298 mono_aot_get_plt_info_offset (gssize *regs, guint8 *code)
2300 guint8 *plt_entry = mono_aot_get_plt_entry (code);
2302 g_assert (plt_entry);
2304 /* The offset is embedded inside the code after the plt entry */
2305 #if defined(__i386__)
2306 return *(guint32*)(plt_entry + 5);
2307 #elif defined(__x86_64__)
2308 return *(guint32*)(plt_entry + 6);
2309 #elif defined(__arm__)
2310 /* The offset is stored as the 5th word of the plt entry */
2311 return ((guint32*)plt_entry) [4];
2313 g_assert_not_reached ();
2319 load_named_code (MonoAotModule *amodule, const char *name)
2323 int n_patches, got_index, pindex;
2329 symbol = g_strdup_printf ("%s", name);
2330 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&code);
2334 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT FOUND function '%s' in AOT file '%s'.\n", name, amodule->aot_name);
2338 symbol = g_strdup_printf ("%s_p", name);
2339 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&p);
2342 /* Nothing to patch */
2345 /* Similar to mono_aot_load_method () */
2347 n_patches = decode_value (p, &p);
2350 MonoJumpInfo *patches;
2353 mp = mono_mempool_new ();
2355 got_index = decode_value (p, &p);
2357 patches = load_patch_info (amodule, mp, n_patches, got_index, &got_slots, p, &p);
2360 for (pindex = 0; pindex < n_patches; ++pindex) {
2361 MonoJumpInfo *ji = &patches [pindex];
2365 * When this code is executed, the runtime may not yet initalized, so
2366 * resolve the patch info by hand.
2368 if (ji->type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
2369 if (!strcmp (ji->data.name, "mono_get_lmf_addr")) {
2370 target = mono_get_lmf_addr;
2371 } else if (!strcmp (ji->data.name, "mono_thread_force_interruption_checkpoint")) {
2372 target = mono_thread_force_interruption_checkpoint;
2373 } else if (!strcmp (ji->data.name, "mono_exception_from_token")) {
2374 target = mono_exception_from_token;
2375 } else if (!strcmp (ji->data.name, "mono_throw_exception")) {
2376 target = mono_get_throw_exception ();
2378 } else if (!strcmp (ji->data.name, "mono_amd64_throw_exception")) {
2379 target = mono_amd64_throw_exception;
2382 } else if (!strcmp (ji->data.name, "mono_arm_throw_exception")) {
2383 target = mono_arm_throw_exception;
2385 } else if (strstr (ji->data.name, "trampoline_func_") == ji->data.name) {
2386 int tramp_type2 = atoi (ji->data.name + strlen ("trampoline_func_"));
2387 target = (gpointer)mono_get_trampoline_func (tramp_type2);
2389 fprintf (stderr, "%s\n", ji->data.name);
2390 g_assert_not_reached ();
2394 /* Hopefully the code doesn't have patches which need method or
2397 target = mono_resolve_patch_target (NULL, NULL, code, ji, FALSE);
2400 amodule->got [got_slots [pindex]] = target;
2405 mono_mempool_destroy (mp);
2412 * Return the piece of code identified by NAME from the mscorlib AOT file.
2415 mono_aot_get_named_code (const char *name)
2418 MonoAotModule *amodule;
2420 image = mono_defaults.corlib;
2423 amodule = image->aot_module;
2426 return load_named_code (amodule, name);
2430 * Return a specific trampoline from the AOT file.
2433 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
2435 MonoAotModule *amodule;
2436 int index, tramp_size;
2437 guint8 *code, *tramp;
2438 static gpointer generic_trampolines [MONO_TRAMPOLINE_NUM];
2440 /* Currently, we keep all trampolines in the mscorlib AOT image */
2441 image = mono_defaults.corlib;
2446 amodule = image->aot_module;
2449 if (amodule->trampoline_index == amodule->num_trampolines)
2450 g_error ("Ran out of trampolines in '%s' (%d)\n", image->name, amodule->num_trampolines);
2452 index = amodule->trampoline_index ++;
2456 if (!generic_trampolines [tramp_type]) {
2459 symbol = g_strdup_printf ("generic_trampoline_%d", tramp_type);
2460 generic_trampolines [tramp_type] = mono_aot_get_named_code (symbol);
2464 tramp = generic_trampolines [tramp_type];
2467 amodule->got [amodule->first_trampoline_got_offset + (index *2)] = tramp;
2468 amodule->got [amodule->first_trampoline_got_offset + (index *2) + 1] = arg1;
2472 #elif defined(__arm__)
2476 g_assert_not_reached ();
2479 code = amodule->trampolines + (index * tramp_size);
2481 *code_len = tramp_size;
2487 mono_aot_get_unbox_trampoline (MonoMethod *method)
2489 guint32 method_index = mono_metadata_token_index (method->token) - 1;
2490 MonoAotModule *amodule;
2494 amodule = method->klass->image->aot_module;
2497 symbol = g_strdup_printf ("unbox_trampoline_%d", method_index);
2498 code = load_named_code (amodule, symbol);
2504 * mono_aot_get_n_pagefaults:
2506 * Return the number of times handle_pagefault is called.
2509 mono_aot_get_n_pagefaults (void)
2511 return n_pagefaults;
2518 mono_aot_init (void)
2523 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
2529 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
2535 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
2541 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
2547 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
2553 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
2559 mono_aot_is_pagefault (void *ptr)
2565 mono_aot_set_make_unreadable (gboolean unreadable)
2570 mono_aot_get_n_pagefaults (void)
2576 mono_aot_handle_pagefault (void *ptr)
2581 mono_aot_get_plt_entry (guint8 *code)
2587 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
2593 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
2599 mono_aot_create_specific_trampolines (gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
2601 g_assert_not_reached ();
2606 mono_aot_get_named_code (char *name)
2608 g_assert_not_reached ();
2613 mono_aot_get_unbox_trampoline (MonoMethod *method)
2615 g_assert_not_reached ();