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, guint8 *buf, guint8 **endbuf)
329 guint32 image_index, value;
332 value = decode_value (buf, &buf);
333 image_index = value >> 24;
334 *token = MONO_TOKEN_METHOD_DEF | (value & 0xffffff);
336 if (image_index == 255) {
338 image_index = decode_value (buf, &buf);
339 *token = decode_value (buf, &buf);
344 image = load_image (module, image_index);
353 make_writable (guint8* addr, guint32 len)
355 #ifndef PLATFORM_WIN32
360 g_error ("Attempt to make AOT memory writable while running in aot-only mode.\n");
362 page_start = (guint8 *) (((gssize) (addr)) & ~ (PAGESIZE - 1));
363 pages = (addr + len - page_start + PAGESIZE - 1) / PAGESIZE;
364 err = mprotect (page_start, pages * PAGESIZE, PROT_READ | PROT_WRITE | PROT_EXEC);
369 g_assert (VirtualProtect (addr, len, PAGE_EXECUTE_READWRITE, &oldp) != 0);
375 create_cache_structure (void)
381 home = g_get_home_dir ();
385 tmp = g_build_filename (home, ".mono", NULL);
386 if (!g_file_test (tmp, G_FILE_TEST_IS_DIR)) {
387 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT creating directory %s", tmp);
388 #ifdef PLATFORM_WIN32
391 err = mkdir (tmp, 0777);
394 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed: %s", g_strerror (errno));
400 tmp = g_build_filename (home, ".mono", "aot-cache", NULL);
401 if (!g_file_test (tmp, G_FILE_TEST_IS_DIR)) {
402 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT creating directory %s", tmp);
403 #ifdef PLATFORM_WIN32
406 err = mkdir (tmp, 0777);
409 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed: %s", g_strerror (errno));
418 * load_aot_module_from_cache:
420 * Experimental code to AOT compile loaded assemblies on demand.
423 * - Add environment variable MONO_AOT_CACHE_OPTIONS
424 * - Add options for controlling the cache size
425 * - Handle full cache by deleting old assemblies lru style
426 * - Add options for excluding assemblies during development
427 * - Maybe add a threshold after an assembly is AOT compiled
428 * - invoking a new mono process is a security risk
429 * - recompile the AOT module if one of its dependencies changes
432 load_aot_module_from_cache (MonoAssembly *assembly, char **aot_name)
434 char *fname, *cmd, *tmp2, *aot_options;
443 if (assembly->image->dynamic)
446 create_cache_structure ();
448 home = g_get_home_dir ();
450 tmp2 = g_strdup_printf ("%s-%s%s", assembly->image->assembly_name, assembly->image->guid, SHARED_EXT);
451 fname = g_build_filename (home, ".mono", "aot-cache", tmp2, NULL);
455 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT trying to load from cache: '%s'.", fname);
456 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
459 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT not found.");
461 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT precompiling assembly '%s'... ", assembly->image->name);
463 aot_options = g_strdup_printf ("outfile=%s", fname);
465 if (spawn_compiler) {
466 /* FIXME: security */
467 /* FIXME: Has to pass the assembly loading path to the child process */
468 cmd = g_strdup_printf ("mono -O=all --aot=%s %s", aot_options, assembly->image->name);
470 res = g_spawn_command_line_sync (cmd, &out, &err, &exit_status, NULL);
472 #if !defined(PLATFORM_WIN32) && !defined(__ppc__) && !defined(__ppc64__) && !defined(__powerpc__)
474 if (!WIFEXITED (exit_status) && (WEXITSTATUS (exit_status) == 0))
475 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT failed: %s.", err);
477 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT succeeded.");
484 res = mono_compile_assembly (assembly, mono_parse_default_optimizations (NULL), aot_options);
486 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT failed.");
488 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT succeeded.");
492 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
494 g_free (aot_options);
501 find_symbol (MonoDl *module, gpointer *globals, const char *name, gpointer *value)
507 for (i = 0; globals [i]; i+= 2) {
508 if (strcmp (globals [i], name) == 0) {
509 *value = globals [i + 1];
514 mono_dl_symbol (module, name, value);
519 load_aot_module (MonoAssembly *assembly, gpointer user_data)
522 MonoAotModule *amodule;
524 gboolean usable = TRUE;
525 char *saved_guid = NULL;
526 char *aot_version = NULL;
527 char *runtime_version;
528 char *opt_flags = NULL;
530 gboolean full_aot = FALSE;
531 gpointer *plt_jump_table_addr = NULL;
532 guint32 *plt_jump_table_size = NULL;
533 guint32 *trampolines_info = NULL;
534 gpointer *got_addr = NULL;
535 gpointer *got = NULL;
536 guint32 *got_size_ptr = NULL;
539 if (mono_compile_aot)
542 if (assembly->image->aot_module)
544 * Already loaded. This can happen because the assembly loading code might invoke
545 * the assembly load hooks multiple times for the same assembly.
549 if (assembly->image->dynamic)
553 if (static_aot_modules)
554 globals = g_hash_table_lookup (static_aot_modules, assembly->aname.name);
560 /* Statically linked AOT module */
562 aot_name = g_strdup_printf ("%s", assembly->aname.name);
563 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "Found statically linked AOT module '%s'.\n", aot_name);
565 TlsSetValue (globals_tls_id, NULL);
568 sofile = load_aot_module_from_cache (assembly, &aot_name);
571 aot_name = g_strdup_printf ("%s%s", assembly->image->name, SHARED_EXT);
573 sofile = mono_dl_open (aot_name, MONO_DL_LAZY, &err);
576 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed to load AOT module %s: %s\n", aot_name, err);
582 * If the image was compiled in no-dlsym mode, it contains no global symbols,
583 * instead it contains an ELF ctor function which is called by dlopen () which
584 * in turn calls mono_aot_register_globals () to register a table which contains
585 * the name and address of the globals.
587 globals = TlsGetValue (globals_tls_id);
588 TlsSetValue (globals_tls_id, NULL);
591 if (!sofile && !globals) {
593 fprintf (stderr, "Failed to load AOT module '%s' in aot-only mode.\n", aot_name);
600 find_symbol (sofile, globals, "mono_assembly_guid", (gpointer *) &saved_guid);
601 find_symbol (sofile, globals, "mono_aot_version", (gpointer *) &aot_version);
602 find_symbol (sofile, globals, "mono_aot_opt_flags", (gpointer *)&opt_flags);
603 find_symbol (sofile, globals, "mono_runtime_version", (gpointer *)&runtime_version);
605 if (!aot_version || strcmp (aot_version, MONO_AOT_FILE_VERSION)) {
606 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);
610 if (!saved_guid || strcmp (assembly->image->guid, saved_guid)) {
611 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is out of date.\n", aot_name);
616 if (!runtime_version || ((strlen (runtime_version) > 0 && strcmp (runtime_version, FULL_VERSION)))) {
617 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);
624 find_symbol (sofile, globals, "mono_aot_full_aot", (gpointer *)&full_aot_str);
626 if (full_aot_str && !strcmp (full_aot_str, "TRUE"))
630 if (mono_aot_only && !full_aot) {
631 fprintf (stderr, "Can't use AOT image '%s' in aot-only mode because it is not compiled with --aot=full.\n", aot_name);
634 if (!mono_aot_only && full_aot) {
635 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is compiled with --aot=full.\n", aot_name);
641 fprintf (stderr, "Failed to load AOT module '%s' while running in aot-only mode.\n", aot_name);
646 mono_dl_close (sofile);
647 assembly->image->aot_module = NULL;
651 find_symbol (sofile, globals, "got_addr", (gpointer *)&got_addr);
653 got = (gpointer*)*got_addr;
655 find_symbol (sofile, globals, "got_size", (gpointer *)&got_size_ptr);
656 g_assert (got_size_ptr);
658 amodule = g_new0 (MonoAotModule, 1);
659 amodule->aot_name = aot_name;
660 amodule->assembly = assembly;
662 amodule->got_size = *got_size_ptr;
663 amodule->got [0] = assembly->image;
664 amodule->globals = globals;
665 amodule->sofile = sofile;
667 sscanf (opt_flags, "%d", &amodule->opts);
669 /* Read image table */
671 guint32 table_len, i;
674 find_symbol (sofile, globals, "mono_image_table", (gpointer *)&table);
677 table_len = *(guint32*)table;
678 table += sizeof (guint32);
679 amodule->image_table = g_new0 (MonoImage*, table_len);
680 amodule->image_names = g_new0 (MonoAssemblyName, table_len);
681 amodule->image_guids = g_new0 (char*, table_len);
682 amodule->image_table_len = table_len;
683 for (i = 0; i < table_len; ++i) {
684 MonoAssemblyName *aname = &(amodule->image_names [i]);
686 aname->name = g_strdup (table);
687 table += strlen (table) + 1;
688 amodule->image_guids [i] = g_strdup (table);
689 table += strlen (table) + 1;
691 aname->culture = g_strdup (table);
692 table += strlen (table) + 1;
693 memcpy (aname->public_key_token, table, strlen (table) + 1);
694 table += strlen (table) + 1;
696 table = ALIGN_PTR_TO (table, 8);
697 aname->flags = *(guint32*)table;
699 aname->major = *(guint32*)table;
701 aname->minor = *(guint32*)table;
703 aname->build = *(guint32*)table;
705 aname->revision = *(guint32*)table;
710 /* Read method and method_info tables */
711 find_symbol (sofile, globals, "method_offsets", (gpointer*)&amodule->code_offsets);
712 find_symbol (sofile, globals, "methods", (gpointer*)&amodule->code);
713 find_symbol (sofile, globals, "methods_end", (gpointer*)&amodule->code_end);
714 find_symbol (sofile, globals, "method_info_offsets", (gpointer*)&amodule->method_info_offsets);
715 find_symbol (sofile, globals, "method_info", (gpointer*)&amodule->method_info);
716 find_symbol (sofile, globals, "ex_info_offsets", (gpointer*)&amodule->ex_info_offsets);
717 find_symbol (sofile, globals, "ex_info", (gpointer*)&amodule->ex_info);
718 find_symbol (sofile, globals, "method_order", (gpointer*)&amodule->method_order);
719 find_symbol (sofile, globals, "method_order_end", (gpointer*)&amodule->method_order_end);
720 find_symbol (sofile, globals, "class_info", (gpointer*)&amodule->class_info);
721 find_symbol (sofile, globals, "class_info_offsets", (gpointer*)&amodule->class_info_offsets);
722 find_symbol (sofile, globals, "class_name_table", (gpointer *)&amodule->class_name_table);
723 find_symbol (sofile, globals, "got_info", (gpointer*)&amodule->got_info);
724 find_symbol (sofile, globals, "got_info_offsets", (gpointer*)&amodule->got_info_offsets);
725 find_symbol (sofile, globals, "wrapper_info", (gpointer*)&amodule->wrapper_info);
726 find_symbol (sofile, globals, "trampolines", (gpointer*)&amodule->trampolines);
727 find_symbol (sofile, globals, "mem_end", (gpointer*)&amodule->mem_end);
729 amodule->mem_begin = amodule->code;
731 find_symbol (sofile, globals, "plt", (gpointer*)&amodule->plt);
732 find_symbol (sofile, globals, "plt_end", (gpointer*)&amodule->plt_end);
733 find_symbol (sofile, globals, "plt_info", (gpointer*)&amodule->plt_info);
735 find_symbol (sofile, globals, "plt_jump_table_addr", (gpointer *)&plt_jump_table_addr);
736 g_assert (plt_jump_table_addr);
737 amodule->plt_jump_table = (guint8*)*plt_jump_table_addr;
738 g_assert (amodule->plt_jump_table);
740 find_symbol (sofile, globals, "plt_jump_table_size", (gpointer *)&plt_jump_table_size);
741 g_assert (plt_jump_table_size);
742 amodule->plt_jump_table_size = *plt_jump_table_size;
744 find_symbol (sofile, globals, "trampolines_info", (gpointer *)&trampolines_info);
745 if (trampolines_info) {
746 amodule->num_trampolines = trampolines_info [0];
747 amodule->first_trampoline_got_offset = trampolines_info [1];
750 if (make_unreadable) {
751 #ifndef PLATFORM_WIN32
756 addr = amodule->mem_begin;
757 len = amodule->mem_end - amodule->mem_begin;
759 /* Round down in both directions to avoid modifying data which is not ours */
760 page_start = (guint8 *) (((gssize) (addr)) & ~ (PAGESIZE - 1)) + PAGESIZE;
761 pages = ((addr + len - page_start + PAGESIZE - 1) / PAGESIZE) - 1;
762 err = mprotect (page_start, pages * PAGESIZE, 0);
769 aot_code_low_addr = MIN (aot_code_low_addr, (gsize)amodule->code);
770 aot_code_high_addr = MAX (aot_code_high_addr, (gsize)amodule->code_end);
772 g_hash_table_insert (aot_modules, assembly, amodule);
775 mono_jit_info_add_aot_module (assembly->image, amodule->code, amodule->code_end);
777 assembly->image->aot_module = amodule;
780 * Since we store methoddef and classdef tokens when referring to methods/classes in
781 * referenced assemblies, we depend on the exact versions of the referenced assemblies.
782 * MS calls this 'hard binding'. This means we have to load all referenced assemblies
783 * non-lazily, since we can't handle out-of-date errors later.
785 for (i = 0; i < amodule->image_table_len; ++i)
786 load_image (amodule, i);
788 if (amodule->out_of_date) {
789 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);
791 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);
796 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT loaded AOT Module for %s.\n", assembly->image->name);
800 * mono_aot_register_globals:
802 * This is called by the ctor function in AOT images compiled with the
806 mono_aot_register_globals (gpointer *globals)
808 TlsSetValue (globals_tls_id, globals);
812 * mono_aot_register_module:
814 * This should be called by embedding code to register AOT modules statically linked
815 * into the executable. AOT_INFO should be the value of the
816 * 'mono_aot_module_<ASSEMBLY_NAME>_info' global symbol from the AOT module.
819 mono_aot_register_module (gpointer *aot_info)
827 /* Determine the assembly name */
828 find_symbol (NULL, globals, "mono_aot_assembly_name", (gpointer*)&aname);
831 /* This could be called before startup */
835 if (!static_aot_modules)
836 static_aot_modules = g_hash_table_new (g_str_hash, g_str_equal);
838 g_hash_table_insert (static_aot_modules, aname, globals);
847 InitializeCriticalSection (&aot_mutex);
848 aot_modules = g_hash_table_new (NULL, NULL);
849 globals_tls_id = TlsAlloc ();
851 mono_install_assembly_load_hook (load_aot_module, NULL);
853 if (getenv ("MONO_LASTAOT"))
854 mono_last_aot_method = atoi (getenv ("MONO_LASTAOT"));
855 if (getenv ("MONO_AOT_CACHE"))
856 use_aot_cache = TRUE;
860 decode_cached_class_info (MonoAotModule *module, MonoCachedClassInfo *info, guint8 *buf, guint8 **endbuf)
864 info->vtable_size = decode_value (buf, &buf);
865 if (info->vtable_size == -1)
868 flags = decode_value (buf, &buf);
869 info->ghcimpl = (flags >> 0) & 0x1;
870 info->has_finalize = (flags >> 1) & 0x1;
871 info->has_cctor = (flags >> 2) & 0x1;
872 info->has_nested_classes = (flags >> 3) & 0x1;
873 info->blittable = (flags >> 4) & 0x1;
874 info->has_references = (flags >> 5) & 0x1;
875 info->has_static_refs = (flags >> 6) & 0x1;
876 info->no_special_static_fields = (flags >> 7) & 0x1;
878 if (info->has_cctor) {
879 MonoImage *cctor_image = decode_method_ref (module, &info->cctor_token, buf, &buf);
883 if (info->has_finalize) {
884 info->finalize_image = decode_method_ref (module, &info->finalize_token, buf, &buf);
885 if (!info->finalize_image)
889 info->instance_size = decode_value (buf, &buf);
890 info->class_size = decode_value (buf, &buf);
891 info->packing_size = decode_value (buf, &buf);
892 info->min_align = decode_value (buf, &buf);
900 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
903 MonoClass *klass = vtable->klass;
904 MonoAotModule *aot_module = klass->image->aot_module;
906 MonoCachedClassInfo class_info;
911 if (MONO_CLASS_IS_INTERFACE (klass) || klass->rank || !aot_module)
914 info = &aot_module->class_info [aot_module->class_info_offsets [mono_metadata_token_index (klass->type_token) - 1]];
917 err = decode_cached_class_info (aot_module, &class_info, p, &p);
921 for (i = 0; i < slot; ++i)
922 decode_method_ref (aot_module, &token, p, &p);
924 image = decode_method_ref (aot_module, &token, p, &p);
928 return mono_aot_get_method_from_token (domain, image, token);
932 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
934 MonoAotModule *aot_module = klass->image->aot_module;
938 if (klass->rank || !aot_module)
941 p = (guint8*)&aot_module->class_info [aot_module->class_info_offsets [mono_metadata_token_index (klass->type_token) - 1]];
943 err = decode_cached_class_info (aot_module, res, p, &p);
951 * mono_aot_get_class_from_name:
953 * Obtains a MonoClass with a given namespace and a given name which is located in IMAGE,
954 * using a cache stored in the AOT file.
955 * Stores the resulting class in *KLASS if found, stores NULL otherwise.
957 * Returns: TRUE if the klass was found/not found in the cache, FALSE if no aot file was
961 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
963 MonoAotModule *aot_module = image->aot_module;
964 guint16 *table, *entry;
967 char full_name_buf [1024];
969 const char *name2, *name_space2;
971 guint32 cols [MONO_TYPEDEF_SIZE];
972 GHashTable *nspace_table;
974 if (!aot_module || !aot_module->class_name_table)
981 /* First look in the cache */
982 if (!aot_module->name_cache)
983 aot_module->name_cache = g_hash_table_new (g_str_hash, g_str_equal);
984 nspace_table = g_hash_table_lookup (aot_module->name_cache, name_space);
986 *klass = g_hash_table_lookup (nspace_table, name);
993 table_size = aot_module->class_name_table [0];
994 table = aot_module->class_name_table + 1;
996 if (name_space [0] == '\0')
997 full_name = g_strdup_printf ("%s", name);
999 if (strlen (name_space) + strlen (name) < 1000) {
1000 sprintf (full_name_buf, "%s.%s", name_space, name);
1001 full_name = full_name_buf;
1003 full_name = g_strdup_printf ("%s.%s", name_space, name);
1006 hash = g_str_hash (full_name) % table_size;
1007 if (full_name != full_name_buf)
1010 entry = &table [hash * 2];
1012 if (entry [0] != 0) {
1013 t = &image->tables [MONO_TABLE_TYPEDEF];
1016 guint32 index = entry [0];
1017 guint32 next = entry [1];
1018 guint32 token = mono_metadata_make_token (MONO_TABLE_TYPEDEF, index);
1020 name_table_accesses ++;
1022 mono_metadata_decode_row (t, index - 1, cols, MONO_TYPEDEF_SIZE);
1024 name2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
1025 name_space2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
1027 if (!strcmp (name, name2) && !strcmp (name_space, name_space2)) {
1029 *klass = mono_class_get (image, token);
1034 nspace_table = g_hash_table_lookup (aot_module->name_cache, name_space);
1035 if (!nspace_table) {
1036 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
1037 g_hash_table_insert (aot_module->name_cache, (char*)name_space2, nspace_table);
1039 g_hash_table_insert (nspace_table, (char*)name2, *klass);
1046 entry = &table [next * 2];
1059 decode_exception_debug_info (MonoAotModule *aot_module, MonoDomain *domain,
1060 MonoMethod *method, guint8* ex_info, guint8 *code)
1064 guint code_len, used_int_regs;
1066 MonoMethodHeader *header;
1068 header = mono_method_get_header (method);
1070 /* Load the method info from the AOT file */
1073 code_len = decode_value (p, &p);
1074 used_int_regs = decode_value (p, &p);
1076 /* Exception table */
1077 if (header && header->num_clauses) {
1079 mono_mempool_alloc0 (domain->mp, sizeof (MonoJitInfo) + (sizeof (MonoJitExceptionInfo) * header->num_clauses));
1080 jinfo->num_clauses = header->num_clauses;
1082 for (i = 0; i < header->num_clauses; ++i) {
1083 MonoExceptionClause *ec = &header->clauses [i];
1084 MonoJitExceptionInfo *ei = &jinfo->clauses [i];
1086 ei->flags = ec->flags;
1087 ei->exvar_offset = decode_value (p, &p);
1089 if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER)
1090 ei->data.filter = code + decode_value (p, &p);
1092 ei->data.catch_class = ec->data.catch_class;
1094 ei->try_start = code + decode_value (p, &p);
1095 ei->try_end = code + decode_value (p, &p);
1096 ei->handler_start = code + decode_value (p, &p);
1100 jinfo = mono_mempool_alloc0 (domain->mp, sizeof (MonoJitInfo));
1102 jinfo->code_size = code_len;
1103 jinfo->used_regs = used_int_regs;
1104 jinfo->method = method;
1105 jinfo->code_start = code;
1106 jinfo->domain_neutral = 0;
1108 /* Load debug info */
1109 buf_len = decode_value (p, &p);
1110 mono_debug_add_aot_method (domain, method, code, p, buf_len);
1116 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
1118 int pos, left, right, offset, offset1, offset2, last_offset, new_offset, page_index, method_index, table_len;
1120 MonoAotModule *aot_module = image->aot_module;
1123 guint8 *code, *ex_info;
1124 guint32 *table, *ptr;
1130 if (domain != mono_get_root_domain ())
1134 offset = (guint8*)addr - aot_module->code;
1136 /* First search through the index */
1137 ptr = aot_module->method_order;
1142 if (*ptr == 0xffffff)
1146 while (*ptr != 0xffffff) {
1147 guint32 method_index = ptr [0];
1148 new_offset = aot_module->code_offsets [method_index];
1150 if (offset >= last_offset && offset < new_offset) {
1156 last_offset = new_offset;
1160 /* Skip rest of index */
1161 while (*ptr != 0xffffff)
1166 table_len = aot_module->method_order_end - table;
1168 g_assert (table <= aot_module->method_order_end);
1171 left = (page_index * 1024);
1172 right = left + 1024;
1174 if (right > table_len)
1177 offset1 = aot_module->code_offsets [table [left]];
1178 g_assert (offset1 <= offset);
1180 //printf ("Found in index: 0x%x 0x%x 0x%x\n", offset, last_offset, new_offset);
1183 //printf ("Not found in index: 0x%x\n", offset);
1188 /* Binary search inside the method_order table to find the method */
1190 pos = (left + right) / 2;
1192 g_assert (table + pos <= aot_module->method_order_end);
1194 //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]]);
1196 offset1 = aot_module->code_offsets [table [pos]];
1197 if (table + pos + 1 >= aot_module->method_order_end)
1198 offset2 = aot_module->code_end - aot_module->code;
1200 offset2 = aot_module->code_offsets [table [pos + 1]];
1202 if (offset < offset1)
1204 else if (offset >= offset2)
1210 method_index = table [pos];
1212 /* Might be a wrapper */
1213 if (aot_module->wrappers) {
1215 method = g_hash_table_lookup (aot_module->wrappers, GUINT_TO_POINTER (method_index));
1222 token = mono_metadata_make_token (MONO_TABLE_METHOD, method_index + 1);
1223 method = mono_get_method (image, token, NULL);
1229 //printf ("F: %s\n", mono_method_full_name (method, TRUE));
1231 code = &aot_module->code [aot_module->code_offsets [method_index]];
1232 ex_info = &aot_module->ex_info [aot_module->ex_info_offsets [method_index]];
1234 jinfo = decode_exception_debug_info (aot_module, domain, method, ex_info, code);
1236 g_assert ((guint8*)addr >= (guint8*)jinfo->code_start);
1237 g_assert ((guint8*)addr < (guint8*)jinfo->code_start + jinfo->code_size);
1239 /* Add it to the normal JitInfo tables */
1240 mono_jit_info_table_add (domain, jinfo);
1246 decode_patch_info (MonoAotModule *aot_module, MonoMemPool *mp, MonoJumpInfo *ji, guint8 *buf, guint8 **endbuf, guint32 *got_offset)
1254 case MONO_PATCH_INFO_METHOD:
1255 case MONO_PATCH_INFO_METHODCONST:
1256 case MONO_PATCH_INFO_METHOD_JUMP:
1257 case MONO_PATCH_INFO_ICALL_ADDR: {
1260 image = decode_method_ref (aot_module, &token, p, &p);
1264 #ifdef MONO_ARCH_HAVE_CREATE_TRAMPOLINE_FROM_TOKEN
1265 if (!mono_aot_only && (ji->type == MONO_PATCH_INFO_METHOD) && (mono_metadata_token_table (token) == MONO_TABLE_METHOD)) {
1266 ji->data.target = mono_create_jit_trampoline_from_token (image, token);
1267 ji->type = MONO_PATCH_INFO_ABS;
1270 ji->data.method = mono_get_method (image, token, NULL);
1271 g_assert (ji->data.method);
1272 mono_class_init (ji->data.method->klass);
1275 ji->data.method = mono_get_method (image, token, NULL);
1276 g_assert (ji->data.method);
1277 mono_class_init (ji->data.method->klass);
1282 case MONO_PATCH_INFO_WRAPPER: {
1283 guint32 wrapper_type;
1285 wrapper_type = decode_value (p, &p);
1287 ji->type = MONO_PATCH_INFO_METHOD;
1289 switch (wrapper_type) {
1290 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK: {
1291 guint32 image_index, token, value;
1293 value = decode_value (p, &p);
1294 image_index = value >> 24;
1295 token = MONO_TOKEN_METHOD_DEF | (value & 0xffffff);
1297 image = load_image (aot_module, image_index);
1300 ji->data.method = mono_get_method (image, token, NULL);
1301 g_assert (ji->data.method);
1302 mono_class_init (ji->data.method->klass);
1304 ji->data.method = mono_marshal_get_remoting_invoke_with_check (ji->data.method);
1307 case MONO_WRAPPER_PROXY_ISINST: {
1308 MonoClass *klass = decode_klass_ref (aot_module, p, &p);
1311 ji->data.method = mono_marshal_get_proxy_cancast (klass);
1314 case MONO_WRAPPER_LDFLD:
1315 case MONO_WRAPPER_LDFLDA:
1316 case MONO_WRAPPER_STFLD:
1317 case MONO_WRAPPER_ISINST: {
1318 MonoClass *klass = decode_klass_ref (aot_module, p, &p);
1321 if (wrapper_type == MONO_WRAPPER_LDFLD)
1322 ji->data.method = mono_marshal_get_ldfld_wrapper (&klass->byval_arg);
1323 else if (wrapper_type == MONO_WRAPPER_LDFLDA)
1324 ji->data.method = mono_marshal_get_ldflda_wrapper (&klass->byval_arg);
1325 else if (wrapper_type == MONO_WRAPPER_STFLD)
1326 ji->data.method = mono_marshal_get_stfld_wrapper (&klass->byval_arg);
1327 else if (wrapper_type == MONO_WRAPPER_ISINST)
1328 ji->data.method = mono_marshal_get_isinst (klass);
1330 g_assert_not_reached ();
1333 case MONO_WRAPPER_LDFLD_REMOTE:
1334 ji->data.method = mono_marshal_get_ldfld_remote_wrapper (NULL);
1336 case MONO_WRAPPER_STFLD_REMOTE:
1337 ji->data.method = mono_marshal_get_stfld_remote_wrapper (NULL);
1339 case MONO_WRAPPER_ALLOC: {
1340 int atype = decode_value (p, &p);
1342 ji->data.method = mono_gc_get_managed_allocator_by_type (atype);
1345 case MONO_WRAPPER_STELEMREF:
1346 ji->data.method = mono_marshal_get_stelemref ();
1349 g_assert_not_reached ();
1353 case MONO_PATCH_INFO_INTERNAL_METHOD:
1354 case MONO_PATCH_INFO_JIT_ICALL_ADDR: {
1355 guint32 len = decode_value (p, &p);
1357 ji->data.name = (char*)p;
1361 case MONO_PATCH_INFO_VTABLE:
1362 case MONO_PATCH_INFO_CLASS:
1363 case MONO_PATCH_INFO_IID:
1364 case MONO_PATCH_INFO_ADJUSTED_IID:
1365 *got_offset = decode_value (p, &p);
1367 if (aot_module->got [*got_offset]) {
1368 /* Already loaded */
1369 //printf ("HIT!\n");
1371 guint8 *tmp = aot_module->got_info + aot_module->got_info_offsets [*got_offset];
1372 ji->data.klass = decode_klass_ref (aot_module, tmp, &tmp);
1373 if (!ji->data.klass)
1377 case MONO_PATCH_INFO_CLASS_INIT:
1378 case MONO_PATCH_INFO_DELEGATE_TRAMPOLINE:
1379 ji->data.klass = decode_klass_ref (aot_module, p, &p);
1380 if (!ji->data.klass)
1383 case MONO_PATCH_INFO_IMAGE:
1384 ji->data.image = load_image (aot_module, decode_value (p, &p));
1385 if (!ji->data.image)
1387 if (ji->data.image == aot_module->assembly->image)
1390 case MONO_PATCH_INFO_FIELD:
1391 case MONO_PATCH_INFO_SFLDA:
1392 *got_offset = decode_value (p, &p);
1394 if (aot_module->got [*got_offset]) {
1395 /* Already loaded */
1396 //printf ("HIT2!\n");
1398 guint8 *tmp = aot_module->got_info + aot_module->got_info_offsets [*got_offset];
1399 ji->data.field = decode_field_info (aot_module, tmp, &tmp);
1400 if (!ji->data.field)
1404 case MONO_PATCH_INFO_SWITCH:
1405 ji->data.table = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoBBTable));
1406 ji->data.table->table_size = decode_value (p, &p);
1407 table = g_new (gpointer, ji->data.table->table_size);
1408 ji->data.table->table = (MonoBasicBlock**)table;
1409 for (i = 0; i < ji->data.table->table_size; i++)
1410 table [i] = (gpointer)(gssize)decode_value (p, &p);
1412 case MONO_PATCH_INFO_R4: {
1415 ji->data.target = mono_mempool_alloc0 (mp, sizeof (float));
1416 val = decode_value (p, &p);
1417 *(float*)ji->data.target = *(float*)&val;
1420 case MONO_PATCH_INFO_R8: {
1423 ji->data.target = mono_mempool_alloc0 (mp, sizeof (double));
1425 val [0] = decode_value (p, &p);
1426 val [1] = decode_value (p, &p);
1427 *(double*)ji->data.target = *(double*)val;
1430 case MONO_PATCH_INFO_LDSTR:
1431 image = load_image (aot_module, decode_value (p, &p));
1434 ji->data.token = mono_jump_info_token_new (mp, image, MONO_TOKEN_STRING + decode_value (p, &p));
1436 case MONO_PATCH_INFO_RVA:
1437 case MONO_PATCH_INFO_DECLSEC:
1438 case MONO_PATCH_INFO_LDTOKEN:
1439 case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
1440 *got_offset = decode_value (p, &p);
1442 if (aot_module->got [*got_offset]) {
1443 /* Already loaded */
1445 guint8 *tmp = aot_module->got_info + aot_module->got_info_offsets [*got_offset];
1446 image = load_image (aot_module, decode_value (tmp, &tmp));
1449 ji->data.token = mono_jump_info_token_new (mp, image, decode_value (tmp, &tmp));
1452 case MONO_PATCH_INFO_EXC_NAME:
1453 ji->data.klass = decode_klass_ref (aot_module, p, &p);
1454 if (!ji->data.klass)
1456 ji->data.name = ji->data.klass->name;
1458 case MONO_PATCH_INFO_METHOD_REL:
1459 ji->data.offset = decode_value (p, &p);
1461 case MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG:
1464 g_warning ("unhandled type %d", ji->type);
1465 g_assert_not_reached ();
1476 static MonoJumpInfo*
1477 load_patch_info (MonoAotModule *aot_module, MonoMemPool *mp, int n_patches,
1478 guint32 got_index, guint32 **got_slots,
1479 guint8 *buf, guint8 **endbuf)
1481 MonoJumpInfo *patches;
1482 MonoJumpInfo *patch_info = NULL;
1484 guint32 last_offset;
1489 /* First load the type + offset table */
1491 patches = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo) * n_patches);
1493 for (pindex = 0; pindex < n_patches; ++pindex) {
1494 MonoJumpInfo *ji = &patches [pindex];
1499 //printf ("T: %d O: %d.\n", ji->type, ji->ip.i);
1500 ji->next = patch_info;
1504 *got_slots = g_malloc (sizeof (guint32) * n_patches);
1505 memset (*got_slots, 0xff, sizeof (guint32) * n_patches);
1507 /* Then load the other data */
1508 for (pindex = 0; pindex < n_patches; ++pindex) {
1509 MonoJumpInfo *ji = &patches [pindex];
1511 if (!decode_patch_info (aot_module, mp, ji, p, &p, (*got_slots) + pindex))
1514 if ((*got_slots) [pindex] == 0xffffffff)
1515 (*got_slots) [pindex] = got_index ++;
1522 g_free (*got_slots);
1529 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
1531 MonoClass *klass = method->klass;
1532 guint32 method_index = mono_metadata_token_index (method->token) - 1;
1533 guint8 *code, *info;
1534 MonoAotModule *aot_module = klass->image->aot_module;
1539 if (mono_profiler_get_events () & MONO_PROFILE_ENTER_LEAVE)
1542 if ((method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
1543 (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
1544 (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
1545 (method->flags & METHOD_ATTRIBUTE_ABSTRACT))
1548 g_assert (klass->inited);
1550 if ((domain != mono_get_root_domain ()) && (!(aot_module->opts & MONO_OPT_SHARED)))
1551 /* Non shared AOT code can't be used in other appdomains */
1554 if (aot_module->out_of_date)
1557 if (method->is_inflated) {
1558 if (!mono_method_is_generic_sharable_impl (method, FALSE))
1560 method = mono_method_get_declaring_generic_method (method);
1563 if (!method->token) {
1567 if (!method->wrapper_type || !aot_module->wrapper_info)
1570 /* Try to find the wrapper among the wrapper info */
1571 full_name = mono_method_full_name (method, TRUE);
1572 p = (char*)aot_module->wrapper_info;
1576 end = p + strlen (p) + 1;
1577 end = ALIGN_PTR_TO (end, 4);
1578 method_index = *(guint32*)end;
1580 if (strcmp (full_name, p) == 0)
1590 /* Needed by find_jit_info */
1592 if (!aot_module->wrappers)
1593 aot_module->wrappers = g_hash_table_new (NULL, NULL);
1594 g_hash_table_insert (aot_module->wrappers, GUINT_TO_POINTER (method_index), method);
1598 if (aot_module->code_offsets [method_index] == 0xffffffff) {
1599 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
1600 char *full_name = mono_method_full_name (method, TRUE);
1601 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.\n", full_name);
1607 code = &aot_module->code [aot_module->code_offsets [method_index]];
1608 info = &aot_module->method_info [aot_module->method_info_offsets [method_index]];
1611 if (!aot_module->methods_loaded)
1612 aot_module->methods_loaded = g_new0 (guint32, klass->image->tables [MONO_TABLE_METHOD].rows + 1);
1615 if ((aot_module->methods_loaded [method_index / 32] >> (method_index % 32)) & 0x1)
1618 if (mono_last_aot_method != -1) {
1619 if (mono_jit_stats.methods_aot > mono_last_aot_method)
1622 if (mono_jit_stats.methods_aot == mono_last_aot_method)
1623 printf ("LAST AOT METHOD: %s.%s.%s.\n", klass->name_space, klass->name, method->name);
1626 return mono_aot_load_method (domain, aot_module, method, code, info, method_index);
1630 mono_aot_load_method (MonoDomain *domain, MonoAotModule *aot_module, MonoMethod *method, guint8 *code, guint8 *info, int method_index)
1632 MonoClass *klass = method->klass;
1633 MonoJumpInfo *patch_info = NULL;
1635 int i, pindex, got_index = 0, n_patches, used_strings;
1636 gboolean non_got_patches, keep_patches = TRUE;
1637 guint8 *p, *ex_info;
1638 MonoJitInfo *jinfo = NULL;
1641 decode_klass_ref (aot_module, p, &p);
1643 if (!use_loaded_code) {
1647 ex_info = &aot_module->ex_info [aot_module->ex_info_offsets [mono_metadata_token_index (method->token) - 1]];
1648 jinfo = decode_exception_debug_info (aot_module, domain, method, ex_info, code);
1651 mono_domain_lock (domain);
1652 code2 = mono_code_manager_reserve (domain->code_mp, jinfo->code_size);
1653 mono_domain_unlock (domain);
1654 memcpy (code2, code, jinfo->code_size);
1655 mono_arch_flush_icache (code2, jinfo->code_size);
1659 if (aot_module->opts & MONO_OPT_SHARED)
1660 used_strings = decode_value (p, &p);
1664 for (i = 0; i < used_strings; i++) {
1665 guint token = decode_value (p, &p);
1666 mono_ldstr (mono_get_root_domain (), klass->image, mono_metadata_token_index (token));
1669 if (aot_module->opts & MONO_OPT_SHARED)
1670 keep_patches = FALSE;
1672 n_patches = decode_value (p, &p);
1674 keep_patches = FALSE;
1677 MonoJumpInfo *patches;
1683 mp = mono_mempool_new ();
1685 got_index = decode_value (p, &p);
1687 patches = load_patch_info (aot_module, mp, n_patches, got_index, &got_slots, p, &p);
1688 if (patches == NULL)
1691 non_got_patches = FALSE;
1692 for (pindex = 0; pindex < n_patches; ++pindex) {
1693 MonoJumpInfo *ji = &patches [pindex];
1695 if (is_got_patch (ji->type)) {
1696 if (!aot_module->got [got_slots [pindex]])
1697 aot_module->got [got_slots [pindex]] = mono_resolve_patch_target (method, domain, code, ji, TRUE);
1698 ji->type = MONO_PATCH_INFO_NONE;
1701 non_got_patches = TRUE;
1703 if (non_got_patches) {
1705 ex_info = &aot_module->ex_info [aot_module->ex_info_offsets [mono_metadata_token_index (method->token) - 1]];
1706 jinfo = decode_exception_debug_info (aot_module, domain, method, ex_info, code);
1709 mono_arch_flush_icache (code, jinfo->code_size);
1710 make_writable (code, jinfo->code_size);
1711 mono_arch_patch_code (method, domain, code, patch_info, TRUE);
1717 mono_mempool_destroy (mp);
1722 mono_jit_stats.methods_aot++;
1724 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
1725 char *full_name = mono_method_full_name (method, TRUE);
1728 ex_info = &aot_module->ex_info [aot_module->ex_info_offsets [method_index]];
1729 jinfo = decode_exception_debug_info (aot_module, domain, method, ex_info, code);
1732 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);
1736 aot_module->methods_loaded [method_index / 32] |= 1 << (method_index % 32);
1738 init_plt (aot_module);
1745 /* FIXME: The space in domain->mp is wasted */
1746 if (aot_module->opts & MONO_OPT_SHARED)
1747 /* No need to cache patches */
1748 mono_mempool_destroy (mp);
1757 * Same as mono_aot_get_method, but we try to avoid loading any metadata from the
1761 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
1764 int i, method_index, pindex, got_index, n_patches, used_strings;
1765 gboolean keep_patches = TRUE;
1767 guint8 *code = NULL;
1769 MonoAotModule *aot_module = image->aot_module;
1775 if (mono_profiler_get_events () & MONO_PROFILE_ENTER_LEAVE)
1778 if (domain != mono_get_root_domain ())
1781 if (aot_module->out_of_date)
1784 if (aot_module->code_offsets [mono_metadata_token_index (token) - 1] == 0xffffffff) {
1788 method_index = mono_metadata_token_index (token) - 1;
1789 code = &aot_module->code [aot_module->code_offsets [method_index]];
1790 info = &aot_module->method_info [aot_module->method_info_offsets [method_index]];
1793 if (!aot_module->methods_loaded)
1794 aot_module->methods_loaded = g_new0 (guint32, image->tables [MONO_TABLE_METHOD].rows + 1);
1797 if ((aot_module->methods_loaded [method_index / 32] >> (method_index % 32)) & 0x1)
1800 if (mono_last_aot_method != -1) {
1801 if (mono_jit_stats.methods_aot > mono_last_aot_method)
1804 if (mono_jit_stats.methods_aot == mono_last_aot_method) {
1805 MonoMethod *method = mono_get_method (image, token, NULL);
1806 printf ("LAST AOT METHOD: %s.%s.%s.\n", method->klass->name_space, method->klass->name, method->name);
1811 klass = decode_klass_ref (aot_module, p, &p);
1813 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
1814 MonoMethod *method = mono_get_method (image, token, NULL);
1815 char *full_name = mono_method_full_name (method, TRUE);
1816 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT FOUND AOT compiled code for %s %p %p\n", full_name, code, info);
1820 if (aot_module->opts & MONO_OPT_SHARED)
1821 used_strings = decode_value (p, &p);
1825 for (i = 0; i < used_strings; i++) {
1826 guint string_token = decode_value (p, &p);
1827 mono_ldstr (mono_get_root_domain (), image, mono_metadata_token_index (string_token));
1830 if (aot_module->opts & MONO_OPT_SHARED)
1831 keep_patches = FALSE;
1833 keep_patches = FALSE;
1835 n_patches = decode_value (p, &p);
1838 MonoJumpInfo *patches;
1844 mp = mono_mempool_new ();
1846 got_index = decode_value (p, &p);
1848 patches = load_patch_info (aot_module, mp, n_patches, got_index, &got_slots, p, &p);
1849 if (patches == NULL)
1852 for (pindex = 0; pindex < n_patches; ++pindex) {
1853 MonoJumpInfo *ji = &patches [pindex];
1855 if (is_got_patch (ji->type)) {
1856 if (!aot_module->got [got_slots [pindex]])
1857 aot_module->got [got_slots [pindex]] = mono_resolve_patch_target (NULL, domain, code, ji, TRUE);
1858 ji->type = MONO_PATCH_INFO_NONE;
1865 mono_mempool_destroy (mp);
1868 mono_jit_stats.methods_aot++;
1872 aot_module->methods_loaded [method_index / 32] |= 1 << (method_index % 32);
1874 init_plt (aot_module);
1879 mono_runtime_class_init (mono_class_vtable (domain, klass));
1884 /* FIXME: The space in domain->mp is wasted */
1885 if (aot_module->opts & MONO_OPT_SHARED)
1886 /* No need to cache patches */
1887 mono_mempool_destroy (mp);
1895 } IsGotEntryUserData;
1898 check_is_got_entry (gpointer key, gpointer value, gpointer user_data)
1900 IsGotEntryUserData *data = (IsGotEntryUserData*)user_data;
1901 MonoAotModule *aot_module = (MonoAotModule*)value;
1903 if (aot_module->got && (data->addr >= (guint8*)(aot_module->got)) && (data->addr < (guint8*)(aot_module->got + aot_module->got_size)))
1908 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
1910 IsGotEntryUserData user_data;
1915 user_data.addr = addr;
1916 user_data.res = FALSE;
1918 g_hash_table_foreach (aot_modules, check_is_got_entry, &user_data);
1921 return user_data.res;
1926 MonoAotModule *module;
1927 } FindAotModuleUserData;
1930 find_aot_module_cb (gpointer key, gpointer value, gpointer user_data)
1932 FindAotModuleUserData *data = (FindAotModuleUserData*)user_data;
1933 MonoAotModule *aot_module = (MonoAotModule*)value;
1935 if ((data->addr >= (guint8*)(aot_module->code)) && (data->addr < (guint8*)(aot_module->code_end)))
1936 data->module = aot_module;
1939 static inline MonoAotModule*
1940 find_aot_module (guint8 *code)
1942 FindAotModuleUserData user_data;
1947 /* Reading these need no locking */
1948 if (((gsize)code < aot_code_low_addr) || ((gsize)code > aot_code_high_addr))
1951 user_data.addr = code;
1952 user_data.module = NULL;
1955 g_hash_table_foreach (aot_modules, find_aot_module_cb, &user_data);
1958 return user_data.module;
1962 * mono_aot_set_make_unreadable:
1964 * Set whenever to make all mmaped memory unreadable. In conjuction with a
1965 * SIGSEGV handler, this is useful to find out which pages the runtime tries to read.
1968 mono_aot_set_make_unreadable (gboolean unreadable)
1970 make_unreadable = unreadable;
1974 MonoAotModule *module;
1979 find_map (gpointer key, gpointer value, gpointer user_data)
1981 MonoAotModule *module = (MonoAotModule*)value;
1982 FindMapUserData *data = (FindMapUserData*)user_data;
1985 if ((data->ptr >= module->mem_begin) && (data->ptr < module->mem_end))
1986 data->module = module;
1989 static MonoAotModule*
1990 find_module_for_addr (void *ptr)
1992 FindMapUserData data;
1994 if (!make_unreadable)
1998 data.ptr = (guint8*)ptr;
2001 g_hash_table_foreach (aot_modules, (GHFunc)find_map, &data);
2008 * mono_aot_is_pagefault:
2010 * Should be called from a SIGSEGV signal handler to find out whenever @ptr is
2011 * within memory allocated by this module.
2014 mono_aot_is_pagefault (void *ptr)
2016 if (!make_unreadable)
2019 return find_module_for_addr (ptr) != NULL;
2023 * mono_aot_handle_pagefault:
2025 * Handle a pagefault caused by an unreadable page by making it readable again.
2028 mono_aot_handle_pagefault (void *ptr)
2030 #ifndef PLATFORM_WIN32
2031 guint8* start = (guint8*)ROUND_DOWN (((gssize)ptr), PAGESIZE);
2035 res = mprotect (start, PAGESIZE, PROT_READ|PROT_WRITE|PROT_EXEC);
2036 g_assert (res == 0);
2047 printf ("\nNative stacktrace:\n\n");
2049 size = backtrace (array, 256);
2050 names = backtrace_symbols (array, size);
2051 for (i =0; i < size; ++i) {
2052 printf ("\t%s\n", names [i]);
2062 * mono_aot_plt_resolve:
2064 * This function is called by the entries in the PLT to resolve the actual method that
2065 * needs to be called. It returns a trampoline to the method and patches the PLT entry.
2068 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
2070 #ifdef MONO_ARCH_AOT_SUPPORTED
2071 guint8 *p, *target, *plt_entry;
2073 MonoAotModule *module = (MonoAotModule*)aot_module;
2076 //printf ("DYN: %p %d\n", aot_module, plt_info_offset);
2078 p = &module->plt_info [plt_info_offset];
2080 ji.type = decode_value (p, &p);
2082 res = decode_patch_info (module, NULL, &ji, p, &p, NULL);
2083 // FIXME: Error handling (how ?)
2086 target = mono_resolve_patch_target (NULL, mono_domain_get (), NULL, &ji, TRUE);
2088 /* Patch the PLT entry with target which might be the actual method not a trampoline */
2089 plt_entry = mono_aot_get_plt_entry (code);
2090 g_assert (plt_entry);
2091 mono_arch_patch_plt_entry (plt_entry, target);
2095 g_assert_not_reached ();
2103 * Initialize the PLT table of the AOT module. Called lazily when the first AOT
2104 * method in the module is loaded to avoid committing memory by writing to it.
2105 * LOCKING: Assumes the AOT lock is held.
2108 init_plt (MonoAotModule *info)
2110 #ifdef MONO_ARCH_AOT_SUPPORTED
2112 guint8 *buf = info->plt;
2113 #elif defined(__x86_64__)
2115 #elif defined(__arm__)
2120 if (info->plt_inited)
2123 tramp = mono_create_specific_trampoline (info, MONO_TRAMPOLINE_AOT_PLT, mono_get_root_domain (), NULL);
2126 /* Initialize the first PLT entry */
2127 make_writable (info->plt, info->plt_end - info->plt);
2128 x86_jump_code (buf, tramp);
2129 #elif defined(__x86_64__) || defined(__arm__)
2131 * Initialize the entries in the plt_jump_table to point to the default targets.
2133 n_entries = info->plt_jump_table_size / sizeof (gpointer);
2135 /* The first entry points to the AOT trampoline */
2136 ((gpointer*)info->plt_jump_table)[0] = tramp;
2137 for (i = 1; i < n_entries; ++i)
2138 /* All the default entries point to the first entry */
2139 ((gpointer*)info->plt_jump_table)[i] = info->plt;
2141 g_assert_not_reached ();
2144 info->plt_inited = TRUE;
2149 * mono_aot_get_plt_entry:
2151 * Return the address of the PLT entry called by the code at CODE if exists.
2154 mono_aot_get_plt_entry (guint8 *code)
2156 MonoAotModule *aot_module = find_aot_module (code);
2157 #if defined(__arm__)
2164 #if defined(__i386__) || defined(__x86_64__)
2165 if (code [-5] == 0xe8) {
2166 guint32 disp = *(guint32*)(code - 4);
2167 guint8 *target = code + disp;
2169 if ((target >= (guint8*)(aot_module->plt)) && (target < (guint8*)(aot_module->plt_end)))
2172 #elif defined(__arm__)
2173 ins = ((guint32*)(gpointer)code) [-1];
2175 /* Should be a 'bl' */
2176 if ((((ins >> 25) & 0x7) == 0x5) && (((ins >> 24) & 0x1) == 0x1)) {
2177 gint32 disp = ((gint32)ins) & 0xffffff;
2178 guint8 *target = code - 4 + 8 + (disp * 4);
2180 if ((target >= (guint8*)(aot_module->plt)) && (target < (guint8*)(aot_module->plt_end)))
2184 g_assert_not_reached ();
2191 * mono_aot_get_plt_info_offset:
2193 * Return the PLT info offset belonging to the plt entry called by CODE.
2196 mono_aot_get_plt_info_offset (gssize *regs, guint8 *code)
2198 guint8 *plt_entry = mono_aot_get_plt_entry (code);
2200 g_assert (plt_entry);
2202 /* The offset is embedded inside the code after the plt entry */
2203 #if defined(__i386__)
2204 return *(guint32*)(plt_entry + 5);
2205 #elif defined(__x86_64__)
2206 return *(guint32*)(plt_entry + 6);
2207 #elif defined(__arm__)
2208 /* The offset is stored as the 5th word of the plt entry */
2209 return ((guint32*)plt_entry) [4];
2211 g_assert_not_reached ();
2217 load_named_code (MonoAotModule *amodule, const char *name)
2221 int n_patches, got_index, pindex;
2227 symbol = g_strdup_printf ("%s", name);
2228 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&code);
2232 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT FOUND function '%s' in AOT file '%s'.\n", name, amodule->aot_name);
2236 symbol = g_strdup_printf ("%s_p", name);
2237 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&p);
2240 /* Nothing to patch */
2243 /* Similar to mono_aot_load_method () */
2245 n_patches = decode_value (p, &p);
2248 MonoJumpInfo *patches;
2251 mp = mono_mempool_new ();
2253 got_index = decode_value (p, &p);
2255 patches = load_patch_info (amodule, mp, n_patches, got_index, &got_slots, p, &p);
2258 for (pindex = 0; pindex < n_patches; ++pindex) {
2259 MonoJumpInfo *ji = &patches [pindex];
2263 * When this code is executed, the runtime may not yet initalized, so
2264 * resolve the patch info by hand.
2266 if (ji->type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
2267 if (!strcmp (ji->data.name, "mono_get_lmf_addr")) {
2268 target = mono_get_lmf_addr;
2269 } else if (!strcmp (ji->data.name, "mono_thread_force_interruption_checkpoint")) {
2270 target = mono_thread_force_interruption_checkpoint;
2271 } else if (!strcmp (ji->data.name, "mono_exception_from_token")) {
2272 target = mono_exception_from_token;
2273 } else if (!strcmp (ji->data.name, "mono_throw_exception")) {
2274 target = mono_get_throw_exception ();
2276 } else if (!strcmp (ji->data.name, "mono_amd64_throw_exception")) {
2277 target = mono_amd64_throw_exception;
2280 } else if (!strcmp (ji->data.name, "mono_arm_throw_exception")) {
2281 target = mono_arm_throw_exception;
2283 } else if (strstr (ji->data.name, "trampoline_func_") == ji->data.name) {
2284 int tramp_type2 = atoi (ji->data.name + strlen ("trampoline_func_"));
2285 target = (gpointer)mono_get_trampoline_func (tramp_type2);
2287 fprintf (stderr, "%s\n", ji->data.name);
2288 g_assert_not_reached ();
2292 /* Hopefully the code doesn't have patches which need method or
2295 target = mono_resolve_patch_target (NULL, NULL, code, ji, FALSE);
2298 amodule->got [got_slots [pindex]] = target;
2303 mono_mempool_destroy (mp);
2310 * Return the piece of code identified by NAME from the mscorlib AOT file.
2313 mono_aot_get_named_code (const char *name)
2316 MonoAotModule *amodule;
2318 image = mono_defaults.corlib;
2321 amodule = image->aot_module;
2324 return load_named_code (amodule, name);
2328 * Return a specific trampoline from the AOT file.
2331 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
2333 MonoAotModule *amodule;
2334 int index, tramp_size;
2335 guint8 *code, *tramp;
2336 static gpointer generic_trampolines [MONO_TRAMPOLINE_NUM];
2338 /* Currently, we keep all trampolines in the mscorlib AOT image */
2339 image = mono_defaults.corlib;
2344 amodule = image->aot_module;
2347 if (amodule->trampoline_index == amodule->num_trampolines)
2348 g_error ("Ran out of trampolines in '%s' (%d)\n", image->name, amodule->num_trampolines);
2350 index = amodule->trampoline_index ++;
2354 if (!generic_trampolines [tramp_type]) {
2357 symbol = g_strdup_printf ("generic_trampoline_%d", tramp_type);
2358 generic_trampolines [tramp_type] = mono_aot_get_named_code (symbol);
2362 tramp = generic_trampolines [tramp_type];
2365 amodule->got [amodule->first_trampoline_got_offset + (index *2)] = tramp;
2366 amodule->got [amodule->first_trampoline_got_offset + (index *2) + 1] = arg1;
2370 #elif defined(__arm__)
2374 g_assert_not_reached ();
2377 code = amodule->trampolines + (index * tramp_size);
2379 *code_len = tramp_size;
2385 mono_aot_get_unbox_trampoline (MonoMethod *method)
2387 guint32 method_index = mono_metadata_token_index (method->token) - 1;
2388 MonoAotModule *amodule;
2392 amodule = method->klass->image->aot_module;
2395 symbol = g_strdup_printf ("unbox_trampoline_%d", method_index);
2396 code = load_named_code (amodule, symbol);
2402 * mono_aot_get_n_pagefaults:
2404 * Return the number of times handle_pagefault is called.
2407 mono_aot_get_n_pagefaults (void)
2409 return n_pagefaults;
2416 mono_aot_init (void)
2421 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
2427 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
2433 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
2439 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
2445 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
2451 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
2457 mono_aot_is_pagefault (void *ptr)
2463 mono_aot_set_make_unreadable (gboolean unreadable)
2468 mono_aot_get_n_pagefaults (void)
2474 mono_aot_handle_pagefault (void *ptr)
2479 mono_aot_get_plt_entry (guint8 *code)
2485 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
2491 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
2497 mono_aot_create_specific_trampolines (gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
2499 g_assert_not_reached ();
2504 mono_aot_get_named_code (char *name)
2506 g_assert_not_reached ();
2511 mono_aot_get_unbox_trampoline (MonoMethod *method)
2513 g_assert_not_reached ();