2 * aot-runtime.c: mono Ahead of Time compiler
5 * Dietmar Maurer (dietmar@ximian.com)
6 * Zoltan Varga (vargaz@gmail.com)
8 * (C) 2002 Ximian, Inc.
12 #include <sys/types.h>
18 #ifdef HAVE_SYS_MMAN_H
27 #ifdef HAVE_EXECINFO_H
34 #ifdef HAVE_SYS_WAIT_H
35 #include <sys/wait.h> /* for WIFEXITED, WEXITSTATUS */
38 #ifdef HAVE_DL_ITERATE_PHDR
42 #include <mono/metadata/tabledefs.h>
43 #include <mono/metadata/class.h>
44 #include <mono/metadata/object.h>
45 #include <mono/metadata/tokentype.h>
46 #include <mono/metadata/appdomain.h>
47 #include <mono/metadata/debug-helpers.h>
48 #include <mono/metadata/assembly.h>
49 #include <mono/metadata/metadata-internals.h>
50 #include <mono/metadata/marshal.h>
51 #include <mono/metadata/gc-internal.h>
52 #include <mono/metadata/monitor.h>
53 #include <mono/metadata/threads-types.h>
54 #include <mono/metadata/mono-endian.h>
55 #include <mono/utils/mono-logger-internal.h>
56 #include <mono/utils/mono-mmap.h>
57 #include "mono/utils/mono-compiler.h"
58 #include <mono/utils/mono-counters.h>
66 #define SHARED_EXT ".dll"
67 #elif ((defined(__ppc__) || defined(__powerpc__) || defined(__ppc64__)) || defined(__MACH__)) && !defined(__linux__)
68 #define SHARED_EXT ".dylib"
69 #elif defined(__APPLE__) && defined(TARGET_X86) && !defined(__native_client_codegen__)
70 #define SHARED_EXT ".dylib"
72 #define SHARED_EXT ".so"
75 #define ALIGN_PTR_TO(ptr,align) (gpointer)((((gssize)(ptr)) + (align - 1)) & (~(align - 1)))
76 #define ROUND_DOWN(VALUE,SIZE) ((VALUE) & ~((SIZE) - 1))
78 typedef struct MonoAotModule {
80 /* Pointer to the Global Offset Table */
82 GHashTable *name_cache;
83 GHashTable *extra_methods;
84 /* Maps methods to their code */
85 GHashTable *method_to_code;
86 /* Maps pointers into the method info to the methods themselves */
87 GHashTable *method_ref_to_method;
88 MonoAssemblyName *image_names;
90 MonoAssembly *assembly;
91 MonoImage **image_table;
92 guint32 image_table_len;
102 gint32 *code_offsets;
103 /* This contains <offset, index> pairs sorted by offset */
104 /* This is needed because LLVM emitted methods can be in any order */
105 gint32 *sorted_code_offsets;
106 gint32 sorted_code_offsets_len;
107 guint32 *method_info_offsets;
108 guint32 *got_info_offsets;
109 guint32 *ex_info_offsets;
110 guint32 *class_info_offsets;
111 guint32 *methods_loaded;
112 guint16 *class_name_table;
113 guint32 *extra_method_table;
114 guint32 *extra_method_info_offsets;
118 /* Points to the mono EH data created by LLVM */
119 guint8 *mono_eh_frame;
121 /* Points to the trampolines */
122 guint8 *trampolines [MONO_AOT_TRAMP_NUM];
123 /* The first unused trampoline of each kind */
124 guint32 trampoline_index [MONO_AOT_TRAMP_NUM];
126 MonoAotFileInfo info;
132 static GHashTable *aot_modules;
133 #define mono_aot_lock() EnterCriticalSection (&aot_mutex)
134 #define mono_aot_unlock() LeaveCriticalSection (&aot_mutex)
135 static CRITICAL_SECTION aot_mutex;
138 * Maps assembly names to the mono_aot_module_<NAME>_info symbols in the
139 * AOT modules registered by mono_aot_register_module ().
141 static GHashTable *static_aot_modules;
144 * Maps MonoJitInfo* to the aot module they belong to, this can be different
145 * from ji->method->klass->image's aot module for generic instances.
147 static GHashTable *ji_to_amodule;
150 * Whenever to AOT compile loaded assemblies on demand and store them in
151 * a cache under $HOME/.mono/aot-cache.
153 static gboolean use_aot_cache = FALSE;
156 * Whenever to spawn a new process to AOT a file or do it in-process. Only relevant if
157 * use_aot_cache is TRUE.
159 static gboolean spawn_compiler = TRUE;
162 static gint32 mono_last_aot_method = -1;
164 static gboolean make_unreadable = FALSE;
165 static guint32 name_table_accesses = 0;
166 static guint32 n_pagefaults = 0;
168 /* Used to speed-up find_aot_module () */
169 static gsize aot_code_low_addr = (gssize)-1;
170 static gsize aot_code_high_addr = 0;
172 static GHashTable *aot_jit_icall_hash;
175 init_plt (MonoAotModule *info);
177 /*****************************************************/
179 /*****************************************************/
184 * Load one of the images referenced by AMODULE. Returns NULL if the image is not
185 * found, and sets the loader error if SET_ERROR is TRUE.
188 load_image (MonoAotModule *amodule, int index, gboolean set_error)
190 MonoAssembly *assembly;
191 MonoImageOpenStatus status;
193 g_assert (index < amodule->image_table_len);
195 if (amodule->image_table [index])
196 return amodule->image_table [index];
197 if (amodule->out_of_date)
200 assembly = mono_assembly_load (&amodule->image_names [index], amodule->assembly->basedir, &status);
202 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is unusable because dependency %s is not found.\n", amodule->aot_name, amodule->image_names [index].name);
203 amodule->out_of_date = TRUE;
206 char *full_name = mono_stringify_assembly_name (&amodule->image_names [index]);
207 mono_loader_set_error_assembly_load (full_name, FALSE);
213 if (strcmp (assembly->image->guid, amodule->image_guids [index])) {
214 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is out of date (Older than dependency %s).\n", amodule->aot_name, amodule->image_names [index].name);
215 amodule->out_of_date = TRUE;
219 amodule->image_table [index] = assembly->image;
220 return assembly->image;
224 decode_value (guint8 *ptr, guint8 **rptr)
229 if ((b & 0x80) == 0){
232 } else if ((b & 0x40) == 0){
233 len = ((b & 0x3f) << 8 | ptr [1]);
235 } else if (b != 0xff) {
236 len = ((b & 0x1f) << 24) |
243 len = (ptr [1] << 24) | (ptr [2] << 16) | (ptr [3] << 8) | ptr [4];
249 //printf ("DECODE: %d.\n", len);
254 * mono_aot_get_method:
256 * Decode an offset table emitted by emit_offset_table (), returning the INDEXth
260 mono_aot_get_offset (guint32 *table, int index)
262 int i, group, ngroups, index_entry_size;
263 int start_offset, offset, noffsets, group_size;
264 guint8 *data_start, *p;
265 guint32 *index32 = NULL;
266 guint16 *index16 = NULL;
268 noffsets = table [0];
269 group_size = table [1];
271 index_entry_size = table [3];
272 group = index / group_size;
274 if (index_entry_size == 2) {
275 index16 = (guint16*)&table [4];
276 data_start = (guint8*)&index16 [ngroups];
277 p = data_start + index16 [group];
279 index32 = (guint32*)&table [4];
280 data_start = (guint8*)&index32 [ngroups];
281 p = data_start + index32 [group];
284 /* offset will contain the value of offsets [group * group_size] */
285 offset = start_offset = decode_value (p, &p);
286 for (i = group * group_size + 1; i <= index; ++i) {
287 offset += decode_value (p, &p);
290 //printf ("Offset lookup: %d -> %d, start=%d, p=%d\n", index, offset, start_offset, table [3 + group]);
296 decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf);
299 decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf);
301 static MonoGenericInst*
302 decode_generic_inst (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
305 MonoType **type_argv;
306 MonoGenericInst *inst;
309 type_argc = decode_value (p, &p);
310 type_argv = g_new0 (MonoType*, type_argc);
312 for (i = 0; i < type_argc; ++i) {
313 MonoClass *pclass = decode_klass_ref (module, p, &p);
318 type_argv [i] = &pclass->byval_arg;
321 inst = mono_metadata_get_generic_inst (type_argc, type_argv);
330 decode_generic_context (MonoAotModule *module, MonoGenericContext *ctx, guint8 *buf, guint8 **endbuf)
332 gboolean has_class_inst, has_method_inst;
335 has_class_inst = decode_value (p, &p);
336 if (has_class_inst) {
337 ctx->class_inst = decode_generic_inst (module, p, &p);
338 if (!ctx->class_inst)
341 has_method_inst = decode_value (p, &p);
342 if (has_method_inst) {
343 ctx->method_inst = decode_generic_inst (module, p, &p);
344 if (!ctx->method_inst)
353 decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
356 MonoClass *klass, *eklass;
360 token = decode_value (p, &p);
365 if (mono_metadata_token_table (token) == 0) {
366 image = load_image (module, decode_value (p, &p), TRUE);
369 klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF + token);
370 } else if (mono_metadata_token_table (token) == MONO_TABLE_TYPESPEC) {
371 if (token == MONO_TOKEN_TYPE_SPEC) {
372 MonoTypeEnum type = decode_value (p, &p);
374 if (type == MONO_TYPE_GENERICINST) {
376 MonoGenericContext ctx;
379 gclass = decode_klass_ref (module, p, &p);
382 g_assert (gclass->generic_container);
384 memset (&ctx, 0, sizeof (ctx));
385 ctx.class_inst = decode_generic_inst (module, p, &p);
388 type = mono_class_inflate_generic_type (&gclass->byval_arg, &ctx);
389 klass = mono_class_from_mono_type (type);
390 mono_metadata_free_type (type);
391 } else if ((type == MONO_TYPE_VAR) || (type == MONO_TYPE_MVAR)) {
393 MonoGenericContainer *container;
395 int num = decode_value (p, &p);
396 gboolean is_method = decode_value (p, &p);
399 MonoMethod *method_def;
400 g_assert (type == MONO_TYPE_MVAR);
401 method_def = decode_resolve_method_ref (module, p, &p);
405 container = mono_method_get_generic_container (method_def);
407 MonoClass *class_def;
408 g_assert (type == MONO_TYPE_VAR);
409 class_def = decode_klass_ref (module, p, &p);
413 container = class_def->generic_container;
416 g_assert (container);
418 // FIXME: Memory management
419 t = g_new0 (MonoType, 1);
421 t->data.generic_param = mono_generic_container_get_param (container, num);
423 // FIXME: Maybe use types directly to avoid
424 // the overhead of creating MonoClass-es
425 klass = mono_class_from_mono_type (t);
429 g_assert_not_reached ();
432 image = load_image (module, decode_value (p, &p), TRUE);
435 klass = mono_class_get (image, token);
437 } else if (token == MONO_TOKEN_TYPE_DEF) {
439 image = load_image (module, decode_value (p, &p), TRUE);
442 rank = decode_value (p, &p);
443 eklass = decode_klass_ref (module, p, &p);
444 klass = mono_array_class_get (eklass, rank);
446 g_assert_not_reached ();
454 static MonoClassField*
455 decode_field_info (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
457 MonoClass *klass = decode_klass_ref (module, buf, &buf);
464 token = MONO_TOKEN_FIELD_DEF + decode_value (p, &p);
468 return mono_class_get_field (klass, token);
471 /* Stores information returned by decode_method_ref () */
476 gboolean no_aot_trampoline;
480 * decode_method_ref_with_target:
482 * Decode a method reference, storing the image/token into a MethodRef structure.
483 * This avoids loading metadata for the method if the caller does not need it. If the method has
484 * no token, then it is loaded from metadata and ref->method is set to the method instance.
485 * If TARGET is non-NULL, abort decoding if it can be determined that the decoded method couldn't resolve to TARGET, and return FALSE.
488 decode_method_ref_with_target (MonoAotModule *module, MethodRef *ref, MonoMethod *target, guint8 *buf, guint8 **endbuf)
490 guint32 image_index, value;
491 MonoImage *image = NULL;
494 memset (ref, 0, sizeof (MethodRef));
496 value = decode_value (p, &p);
497 image_index = value >> 24;
499 if (image_index == MONO_AOT_METHODREF_NO_AOT_TRAMPOLINE) {
500 ref->no_aot_trampoline = TRUE;
501 value = decode_value (p, &p);
502 image_index = value >> 24;
505 if (image_index < MONO_AOT_METHODREF_MIN || image_index == MONO_AOT_METHODREF_METHODSPEC || image_index == MONO_AOT_METHODREF_GINST) {
506 if (target && target->wrapper_type)
510 if (image_index == MONO_AOT_METHODREF_WRAPPER) {
511 guint32 wrapper_type;
513 wrapper_type = decode_value (p, &p);
515 if (target && target->wrapper_type != wrapper_type)
519 image = mono_defaults.corlib;
521 switch (wrapper_type) {
522 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK: {
523 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
527 mono_class_init (m->klass);
528 ref->method = mono_marshal_get_remoting_invoke_with_check (m);
531 case MONO_WRAPPER_PROXY_ISINST: {
532 MonoClass *klass = decode_klass_ref (module, p, &p);
535 ref->method = mono_marshal_get_proxy_cancast (klass);
538 case MONO_WRAPPER_LDFLD:
539 case MONO_WRAPPER_LDFLDA:
540 case MONO_WRAPPER_STFLD:
541 case MONO_WRAPPER_ISINST: {
542 MonoClass *klass = decode_klass_ref (module, p, &p);
545 if (wrapper_type == MONO_WRAPPER_LDFLD)
546 ref->method = mono_marshal_get_ldfld_wrapper (&klass->byval_arg);
547 else if (wrapper_type == MONO_WRAPPER_LDFLDA)
548 ref->method = mono_marshal_get_ldflda_wrapper (&klass->byval_arg);
549 else if (wrapper_type == MONO_WRAPPER_STFLD)
550 ref->method = mono_marshal_get_stfld_wrapper (&klass->byval_arg);
551 else if (wrapper_type == MONO_WRAPPER_ISINST)
552 ref->method = mono_marshal_get_isinst (klass);
554 g_assert_not_reached ();
557 case MONO_WRAPPER_LDFLD_REMOTE:
558 ref->method = mono_marshal_get_ldfld_remote_wrapper (NULL);
560 case MONO_WRAPPER_STFLD_REMOTE:
561 ref->method = mono_marshal_get_stfld_remote_wrapper (NULL);
563 case MONO_WRAPPER_ALLOC: {
564 int atype = decode_value (p, &p);
566 ref->method = mono_gc_get_managed_allocator_by_type (atype);
569 case MONO_WRAPPER_WRITE_BARRIER:
570 ref->method = mono_gc_get_write_barrier ();
572 case MONO_WRAPPER_STELEMREF:
573 ref->method = mono_marshal_get_stelemref ();
575 case MONO_WRAPPER_SYNCHRONIZED: {
576 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
580 ref->method = mono_marshal_get_synchronized_wrapper (m);
583 case MONO_WRAPPER_UNKNOWN: {
584 MonoMethodDesc *desc;
585 MonoMethod *orig_method;
586 int subtype = decode_value (p, &p);
588 if (subtype == MONO_AOT_WRAPPER_PTR_TO_STRUCTURE || subtype == MONO_AOT_WRAPPER_STRUCTURE_TO_PTR) {
589 MonoClass *klass = decode_klass_ref (module, p, &p);
595 if (klass != target->klass)
598 if (subtype == MONO_AOT_WRAPPER_PTR_TO_STRUCTURE) {
599 if (strcmp (target->name, "PtrToStructure"))
601 ref->method = mono_marshal_get_ptr_to_struct (klass);
603 if (strcmp (target->name, "StructureToPtr"))
605 ref->method = mono_marshal_get_struct_to_ptr (klass);
608 if (subtype == MONO_AOT_WRAPPER_MONO_ENTER)
609 desc = mono_method_desc_new ("Monitor:Enter", FALSE);
610 else if (subtype == MONO_AOT_WRAPPER_MONO_EXIT)
611 desc = mono_method_desc_new ("Monitor:Exit", FALSE);
613 g_assert_not_reached ();
614 orig_method = mono_method_desc_search_in_class (desc, mono_defaults.monitor_class);
615 g_assert (orig_method);
616 mono_method_desc_free (desc);
617 ref->method = mono_monitor_get_fast_path (orig_method);
621 case MONO_WRAPPER_RUNTIME_INVOKE: {
623 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
627 ref->method = mono_marshal_get_runtime_invoke (m, FALSE);
630 case MONO_WRAPPER_MANAGED_TO_MANAGED: {
631 int subtype = decode_value (p, &p);
633 if (subtype == MONO_AOT_WRAPPER_ELEMENT_ADDR) {
634 int rank = decode_value (p, &p);
635 int elem_size = decode_value (p, &p);
637 ref->method = mono_marshal_get_array_address (rank, elem_size);
639 g_assert_not_reached ();
643 case MONO_WRAPPER_MANAGED_TO_NATIVE: {
644 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
649 /* This should only happen when looking for an extra method */
651 if (mono_marshal_method_from_wrapper (target) == m)
652 ref->method = target;
658 g_assert_not_reached ();
660 } else if (image_index == MONO_AOT_METHODREF_WRAPPER_NAME) {
663 /* Can't decode these */
664 g_assert_not_reached ();
665 } else if (image_index == MONO_AOT_METHODREF_METHODSPEC) {
666 image_index = decode_value (p, &p);
667 ref->token = decode_value (p, &p);
669 image = load_image (module, image_index, TRUE);
672 } else if (image_index == MONO_AOT_METHODREF_GINST) {
674 MonoGenericContext ctx;
677 * These methods do not have a token which resolves them, so we
678 * resolve them immediately.
680 klass = decode_klass_ref (module, p, &p);
684 if (target && target->klass != klass)
687 image_index = decode_value (p, &p);
688 ref->token = decode_value (p, &p);
690 image = load_image (module, image_index, TRUE);
694 ref->method = mono_get_method_full (image, ref->token, NULL, NULL);
698 memset (&ctx, 0, sizeof (ctx));
700 if (FALSE && klass->generic_class) {
701 ctx.class_inst = klass->generic_class->context.class_inst;
702 ctx.method_inst = NULL;
704 ref->method = mono_class_inflate_generic_method_full (ref->method, klass, &ctx);
707 memset (&ctx, 0, sizeof (ctx));
709 if (!decode_generic_context (module, &ctx, p, &p))
712 ref->method = mono_class_inflate_generic_method_full (ref->method, klass, &ctx);
713 } else if (image_index == MONO_AOT_METHODREF_ARRAY) {
717 klass = decode_klass_ref (module, p, &p);
720 method_type = decode_value (p, &p);
721 switch (method_type) {
723 ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank);
726 ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank * 2);
729 ref->method = mono_class_get_method_from_name (klass, "Get", -1);
732 ref->method = mono_class_get_method_from_name (klass, "Address", -1);
735 ref->method = mono_class_get_method_from_name (klass, "Set", -1);
738 g_assert_not_reached ();
741 g_assert (image_index < MONO_AOT_METHODREF_MIN);
742 ref->token = MONO_TOKEN_METHOD_DEF | (value & 0xffffff);
744 image = load_image (module, image_index, TRUE);
757 decode_method_ref (MonoAotModule *module, MethodRef *ref, guint8 *buf, guint8 **endbuf)
759 return decode_method_ref_with_target (module, ref, NULL, buf, endbuf);
763 * decode_resolve_method_ref_with_target:
765 * Similar to decode_method_ref, but resolve and return the method itself.
768 decode_resolve_method_ref_with_target (MonoAotModule *module, MonoMethod *target, guint8 *buf, guint8 **endbuf)
773 res = decode_method_ref_with_target (module, &ref, target, buf, endbuf);
780 return mono_get_method (ref.image, ref.token, NULL);
784 decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
786 return decode_resolve_method_ref_with_target (module, NULL, buf, endbuf);
790 create_cache_structure (void)
796 home = g_get_home_dir ();
800 tmp = g_build_filename (home, ".mono", NULL);
801 if (!g_file_test (tmp, G_FILE_TEST_IS_DIR)) {
802 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT creating directory %s", tmp);
806 err = mkdir (tmp, 0777);
809 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed: %s", g_strerror (errno));
815 tmp = g_build_filename (home, ".mono", "aot-cache", NULL);
816 if (!g_file_test (tmp, G_FILE_TEST_IS_DIR)) {
817 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT creating directory %s", tmp);
821 err = mkdir (tmp, 0777);
824 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed: %s", g_strerror (errno));
833 * load_aot_module_from_cache:
835 * Experimental code to AOT compile loaded assemblies on demand.
838 * - Add environment variable MONO_AOT_CACHE_OPTIONS
839 * - Add options for controlling the cache size
840 * - Handle full cache by deleting old assemblies lru style
841 * - Add options for excluding assemblies during development
842 * - Maybe add a threshold after an assembly is AOT compiled
843 * - invoking a new mono process is a security risk
844 * - recompile the AOT module if one of its dependencies changes
847 load_aot_module_from_cache (MonoAssembly *assembly, char **aot_name)
849 char *fname, *cmd, *tmp2, *aot_options;
858 if (assembly->image->dynamic)
861 create_cache_structure ();
863 home = g_get_home_dir ();
865 tmp2 = g_strdup_printf ("%s-%s%s", assembly->image->assembly_name, assembly->image->guid, SHARED_EXT);
866 fname = g_build_filename (home, ".mono", "aot-cache", tmp2, NULL);
870 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT trying to load from cache: '%s'.", fname);
871 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
874 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT not found.");
876 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT precompiling assembly '%s'... ", assembly->image->name);
878 aot_options = g_strdup_printf ("outfile=%s", fname);
880 if (spawn_compiler) {
881 /* FIXME: security */
882 /* FIXME: Has to pass the assembly loading path to the child process */
883 cmd = g_strdup_printf ("mono -O=all --aot=%s %s", aot_options, assembly->image->name);
885 res = g_spawn_command_line_sync (cmd, &out, &err, &exit_status, NULL);
887 #if !defined(HOST_WIN32) && !defined(__ppc__) && !defined(__ppc64__) && !defined(__powerpc__)
889 if (!WIFEXITED (exit_status) && (WEXITSTATUS (exit_status) == 0))
890 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT failed: %s.", err);
892 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT succeeded.");
899 res = mono_compile_assembly (assembly, mono_parse_default_optimizations (NULL), aot_options);
901 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT failed.");
903 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT succeeded.");
907 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
909 g_free (aot_options);
916 find_symbol (MonoDl *module, gpointer *globals, const char *name, gpointer *value)
920 guint16 *table, *entry;
924 /* The first entry points to the hash */
928 table_size = table [0];
931 hash = mono_metadata_str_hash (name) % table_size;
933 entry = &table [hash * 2];
935 /* Search the hash for the index into the globals table */
937 while (entry [0] != 0) {
938 guint32 index = entry [0] - 1;
939 guint32 next = entry [1];
941 //printf ("X: %s %s\n", (char*)globals [index * 2], name);
943 if (!strcmp (globals [index * 2], name)) {
944 global_index = index;
949 entry = &table [next * 2];
955 if (global_index != -1)
956 *value = globals [global_index * 2 + 1];
960 char *err = mono_dl_symbol (module, name, value);
968 load_aot_module (MonoAssembly *assembly, gpointer user_data)
971 MonoAotModule *amodule;
973 gboolean usable = TRUE;
974 char *saved_guid = NULL;
975 char *aot_version = NULL;
976 char *runtime_version, *build_info;
977 char *opt_flags = NULL;
980 gboolean full_aot = FALSE;
981 MonoAotFileInfo *file_info = NULL;
985 if (mono_compile_aot)
988 if (assembly->image->aot_module)
990 * Already loaded. This can happen because the assembly loading code might invoke
991 * the assembly load hooks multiple times for the same assembly.
995 if (assembly->image->dynamic)
998 if (mono_security_get_mode () == MONO_SECURITY_MODE_CAS)
1002 if (static_aot_modules)
1003 globals = g_hash_table_lookup (static_aot_modules, assembly->aname.name);
1009 /* Statically linked AOT module */
1011 aot_name = g_strdup_printf ("%s", assembly->aname.name);
1012 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "Found statically linked AOT module '%s'.\n", aot_name);
1015 sofile = load_aot_module_from_cache (assembly, &aot_name);
1018 aot_name = g_strdup_printf ("%s%s", assembly->image->name, SHARED_EXT);
1020 sofile = mono_dl_open (aot_name, MONO_DL_LAZY, &err);
1023 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed to load AOT module %s: %s\n", aot_name, err);
1029 if (!sofile && !globals) {
1030 if (mono_aot_only) {
1031 fprintf (stderr, "Failed to load AOT module '%s' in aot-only mode.\n", aot_name);
1038 find_symbol (sofile, globals, "mono_assembly_guid", (gpointer *) &saved_guid);
1039 find_symbol (sofile, globals, "mono_aot_version", (gpointer *) &aot_version);
1040 find_symbol (sofile, globals, "mono_aot_opt_flags", (gpointer *)&opt_flags);
1041 find_symbol (sofile, globals, "mono_runtime_version", (gpointer *)&runtime_version);
1043 if (!aot_version || strcmp (aot_version, MONO_AOT_FILE_VERSION)) {
1044 msg = g_strdup_printf ("wrong file format version (expected %s got %s)", MONO_AOT_FILE_VERSION, aot_version);
1048 if (!saved_guid || strcmp (assembly->image->guid, saved_guid)) {
1049 msg = g_strdup_printf ("doesn't match assembly");
1054 build_info = mono_get_runtime_build_info ();
1055 if (!runtime_version || ((strlen (runtime_version) > 0 && strcmp (runtime_version, build_info)))) {
1056 msg = g_strdup_printf ("compiled against runtime version '%s' while this runtime has version '%s'", runtime_version, build_info);
1059 g_free (build_info);
1061 find_symbol (sofile, globals, "mono_aot_file_info", (gpointer*)&file_info);
1062 g_assert (file_info);
1064 full_aot = ((MonoAotFileInfo*)file_info)->flags & MONO_AOT_FILE_FLAG_FULL_AOT;
1066 if (mono_aot_only && !full_aot) {
1067 fprintf (stderr, "Can't use AOT image '%s' in aot-only mode because it is not compiled with --aot=full.\n", aot_name);
1070 if (!mono_aot_only && full_aot) {
1071 msg = g_strdup_printf ("compiled with --aot=full");
1076 /* mono_arch_find_imt_method () requires this */
1077 if ((((MonoAotFileInfo*)file_info)->flags & MONO_AOT_FILE_FLAG_WITH_LLVM) && !mono_use_llvm) {
1078 msg = g_strdup_printf ("compiled against LLVM");
1083 if (mini_get_debug_options ()->mdb_optimizations && !(file_info->flags & MONO_AOT_FILE_FLAG_DEBUG) && !full_aot) {
1084 msg = g_strdup_printf ("not compiled for debugging");
1088 find_symbol (sofile, globals, "blob", (gpointer*)&blob);
1090 if (usable && ((MonoAotFileInfo*)file_info)->gc_name_index != -1) {
1091 char *gc_name = (char*)&blob [((MonoAotFileInfo*)file_info)->gc_name_index];
1092 const char *current_gc_name = mono_gc_get_gc_name ();
1094 if (strcmp (current_gc_name, gc_name) != 0) {
1095 msg = g_strdup_printf ("compiled against GC %s, while the current runtime uses GC %s.\n", gc_name, current_gc_name);
1101 if (mono_aot_only) {
1102 fprintf (stderr, "Failed to load AOT module '%s' while running in aot-only mode: %s.\n", aot_name, msg);
1105 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is unusable: %s.\n", aot_name, msg);
1110 mono_dl_close (sofile);
1111 assembly->image->aot_module = NULL;
1115 amodule = g_new0 (MonoAotModule, 1);
1116 amodule->aot_name = aot_name;
1117 amodule->assembly = assembly;
1119 memcpy (&amodule->info, file_info, sizeof (*file_info));
1121 amodule->got = amodule->info.got;
1122 amodule->got [0] = assembly->image;
1123 amodule->globals = globals;
1124 amodule->sofile = sofile;
1125 amodule->method_to_code = g_hash_table_new (mono_aligned_addr_hash, NULL);
1126 amodule->blob = blob;
1128 /* Read image table */
1130 guint32 table_len, i;
1133 find_symbol (sofile, globals, "mono_image_table", (gpointer *)&table);
1136 table_len = *(guint32*)table;
1137 table += sizeof (guint32);
1138 amodule->image_table = g_new0 (MonoImage*, table_len);
1139 amodule->image_names = g_new0 (MonoAssemblyName, table_len);
1140 amodule->image_guids = g_new0 (char*, table_len);
1141 amodule->image_table_len = table_len;
1142 for (i = 0; i < table_len; ++i) {
1143 MonoAssemblyName *aname = &(amodule->image_names [i]);
1145 aname->name = g_strdup (table);
1146 table += strlen (table) + 1;
1147 amodule->image_guids [i] = g_strdup (table);
1148 table += strlen (table) + 1;
1150 aname->culture = g_strdup (table);
1151 table += strlen (table) + 1;
1152 memcpy (aname->public_key_token, table, strlen (table) + 1);
1153 table += strlen (table) + 1;
1155 table = ALIGN_PTR_TO (table, 8);
1156 aname->flags = *(guint32*)table;
1158 aname->major = *(guint32*)table;
1160 aname->minor = *(guint32*)table;
1162 aname->build = *(guint32*)table;
1164 aname->revision = *(guint32*)table;
1169 /* Read method and method_info tables */
1170 find_symbol (sofile, globals, "code_offsets", (gpointer*)&amodule->code_offsets);
1171 amodule->code = amodule->info.methods;
1173 /* Mask out thumb interop bit */
1174 amodule->code = (void*)((mgreg_t)amodule->code & ~1);
1176 find_symbol (sofile, globals, "methods_end", (gpointer*)&amodule->code_end);
1177 find_symbol (sofile, globals, "method_info_offsets", (gpointer*)&amodule->method_info_offsets);
1178 find_symbol (sofile, globals, "ex_info_offsets", (gpointer*)&amodule->ex_info_offsets);
1179 find_symbol (sofile, globals, "class_info_offsets", (gpointer*)&amodule->class_info_offsets);
1180 find_symbol (sofile, globals, "class_name_table", (gpointer *)&amodule->class_name_table);
1181 find_symbol (sofile, globals, "extra_method_table", (gpointer *)&amodule->extra_method_table);
1182 find_symbol (sofile, globals, "extra_method_info_offsets", (gpointer *)&amodule->extra_method_info_offsets);
1183 find_symbol (sofile, globals, "got_info_offsets", (gpointer*)&amodule->got_info_offsets);
1184 find_symbol (sofile, globals, "specific_trampolines", (gpointer*)&(amodule->trampolines [MONO_AOT_TRAMP_SPECIFIC]));
1185 find_symbol (sofile, globals, "static_rgctx_trampolines", (gpointer*)&(amodule->trampolines [MONO_AOT_TRAMP_STATIC_RGCTX]));
1186 find_symbol (sofile, globals, "imt_thunks", (gpointer*)&(amodule->trampolines [MONO_AOT_TRAMP_IMT_THUNK]));
1187 find_symbol (sofile, globals, "unwind_info", (gpointer)&amodule->unwind_info);
1188 find_symbol (sofile, globals, "mem_end", (gpointer*)&amodule->mem_end);
1189 find_symbol (sofile, globals, "thumb_end", (gpointer*)&amodule->thumb_end);
1191 amodule->mem_begin = amodule->code;
1193 find_symbol (sofile, globals, "plt", (gpointer*)&amodule->plt);
1194 find_symbol (sofile, globals, "plt_end", (gpointer*)&amodule->plt_end);
1196 amodule->mono_eh_frame = amodule->info.mono_eh_frame;
1198 if (make_unreadable) {
1199 #ifndef TARGET_WIN32
1201 guint8 *page_start, *page_end;
1204 addr = amodule->mem_begin;
1205 len = amodule->mem_end - amodule->mem_begin;
1207 /* Round down in both directions to avoid modifying data which is not ours */
1208 page_start = (guint8 *) (((gssize) (addr)) & ~ (mono_pagesize () - 1)) + mono_pagesize ();
1209 page_end = (guint8 *) (((gssize) (addr + len)) & ~ (mono_pagesize () - 1));
1210 if (page_end > page_start) {
1211 err = mono_mprotect (page_start, (page_end - page_start), MONO_MMAP_NONE);
1212 g_assert (err == 0);
1219 aot_code_low_addr = MIN (aot_code_low_addr, (gsize)amodule->code);
1220 aot_code_high_addr = MAX (aot_code_high_addr, (gsize)amodule->code_end);
1222 g_hash_table_insert (aot_modules, assembly, amodule);
1225 mono_jit_info_add_aot_module (assembly->image, amodule->code, amodule->code_end);
1227 assembly->image->aot_module = amodule;
1229 if (mono_aot_only) {
1230 if (mono_defaults.corlib) {
1231 /* The second got slot contains the mscorlib got addr */
1232 MonoAotModule *mscorlib_amodule = mono_defaults.corlib->aot_module;
1234 amodule->got [1] = mscorlib_amodule->got;
1236 amodule->got [1] = amodule->got;
1240 if (mono_gc_is_moving ()) {
1243 memset (&ji, 0, sizeof (ji));
1244 ji.type = MONO_PATCH_INFO_GC_CARD_TABLE_ADDR;
1246 amodule->got [2] = mono_resolve_patch_target (NULL, mono_get_root_domain (), NULL, &ji, FALSE);
1250 * Since we store methoddef and classdef tokens when referring to methods/classes in
1251 * referenced assemblies, we depend on the exact versions of the referenced assemblies.
1252 * MS calls this 'hard binding'. This means we have to load all referenced assemblies
1253 * non-lazily, since we can't handle out-of-date errors later.
1254 * The cached class info also depends on the exact assemblies.
1256 for (i = 0; i < amodule->image_table_len; ++i)
1257 load_image (amodule, i, FALSE);
1259 if (amodule->out_of_date) {
1260 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);
1261 if (mono_aot_only) {
1262 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);
1267 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT loaded AOT Module for %s.\n", assembly->image->name);
1271 * mono_aot_register_globals:
1273 * This is called by the ctor function in AOT images compiled with the
1274 * 'no-dlsym' option.
1277 mono_aot_register_globals (gpointer *globals)
1279 g_assert_not_reached ();
1283 * mono_aot_register_module:
1285 * This should be called by embedding code to register AOT modules statically linked
1286 * into the executable. AOT_INFO should be the value of the
1287 * 'mono_aot_module_<ASSEMBLY_NAME>_info' global symbol from the AOT module.
1290 mono_aot_register_module (gpointer *aot_info)
1298 /* Determine the assembly name */
1299 find_symbol (NULL, globals, "mono_aot_assembly_name", (gpointer*)&aname);
1302 /* This could be called before startup */
1306 if (!static_aot_modules)
1307 static_aot_modules = g_hash_table_new (g_str_hash, g_str_equal);
1309 g_hash_table_insert (static_aot_modules, aname, globals);
1316 mono_aot_init (void)
1318 InitializeCriticalSection (&aot_mutex);
1319 aot_modules = g_hash_table_new (NULL, NULL);
1321 mono_install_assembly_load_hook (load_aot_module, NULL);
1323 if (g_getenv ("MONO_LASTAOT"))
1324 mono_last_aot_method = atoi (g_getenv ("MONO_LASTAOT"));
1325 if (g_getenv ("MONO_AOT_CACHE"))
1326 use_aot_cache = TRUE;
1330 mono_aot_cleanup (void)
1332 if (aot_jit_icall_hash)
1333 g_hash_table_destroy (aot_jit_icall_hash);
1335 g_hash_table_destroy (aot_modules);
1339 decode_cached_class_info (MonoAotModule *module, MonoCachedClassInfo *info, guint8 *buf, guint8 **endbuf)
1345 info->vtable_size = decode_value (buf, &buf);
1346 if (info->vtable_size == -1)
1349 flags = decode_value (buf, &buf);
1350 info->ghcimpl = (flags >> 0) & 0x1;
1351 info->has_finalize = (flags >> 1) & 0x1;
1352 info->has_cctor = (flags >> 2) & 0x1;
1353 info->has_nested_classes = (flags >> 3) & 0x1;
1354 info->blittable = (flags >> 4) & 0x1;
1355 info->has_references = (flags >> 5) & 0x1;
1356 info->has_static_refs = (flags >> 6) & 0x1;
1357 info->no_special_static_fields = (flags >> 7) & 0x1;
1358 info->is_generic_container = (flags >> 8) & 0x1;
1360 if (info->has_cctor) {
1361 res = decode_method_ref (module, &ref, buf, &buf);
1364 info->cctor_token = ref.token;
1366 if (info->has_finalize) {
1367 res = decode_method_ref (module, &ref, buf, &buf);
1370 info->finalize_image = ref.image;
1371 info->finalize_token = ref.token;
1374 info->instance_size = decode_value (buf, &buf);
1375 info->class_size = decode_value (buf, &buf);
1376 info->packing_size = decode_value (buf, &buf);
1377 info->min_align = decode_value (buf, &buf);
1385 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
1388 MonoClass *klass = vtable->klass;
1389 MonoAotModule *amodule = klass->image->aot_module;
1391 MonoCachedClassInfo class_info;
1396 if (MONO_CLASS_IS_INTERFACE (klass) || klass->rank || !amodule)
1399 info = &amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
1402 err = decode_cached_class_info (amodule, &class_info, p, &p);
1406 for (i = 0; i < slot; ++i)
1407 decode_method_ref (amodule, &ref, p, &p);
1409 res = decode_method_ref (amodule, &ref, p, &p);
1412 if (ref.no_aot_trampoline)
1415 if (mono_metadata_token_index (ref.token) == 0)
1418 return mono_aot_get_method_from_token (domain, ref.image, ref.token);
1422 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
1424 MonoAotModule *amodule = klass->image->aot_module;
1428 if (klass->rank || !amodule)
1431 p = (guint8*)&amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
1433 err = decode_cached_class_info (amodule, res, p, &p);
1441 * mono_aot_get_class_from_name:
1443 * Obtains a MonoClass with a given namespace and a given name which is located in IMAGE,
1444 * using a cache stored in the AOT file.
1445 * Stores the resulting class in *KLASS if found, stores NULL otherwise.
1447 * Returns: TRUE if the klass was found/not found in the cache, FALSE if no aot file was
1451 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
1453 MonoAotModule *amodule = image->aot_module;
1454 guint16 *table, *entry;
1457 char full_name_buf [1024];
1459 const char *name2, *name_space2;
1461 guint32 cols [MONO_TYPEDEF_SIZE];
1462 GHashTable *nspace_table;
1464 if (!amodule || !amodule->class_name_table)
1471 /* First look in the cache */
1472 if (!amodule->name_cache)
1473 amodule->name_cache = g_hash_table_new (g_str_hash, g_str_equal);
1474 nspace_table = g_hash_table_lookup (amodule->name_cache, name_space);
1476 *klass = g_hash_table_lookup (nspace_table, name);
1483 table_size = amodule->class_name_table [0];
1484 table = amodule->class_name_table + 1;
1486 if (name_space [0] == '\0')
1487 full_name = g_strdup_printf ("%s", name);
1489 if (strlen (name_space) + strlen (name) < 1000) {
1490 sprintf (full_name_buf, "%s.%s", name_space, name);
1491 full_name = full_name_buf;
1493 full_name = g_strdup_printf ("%s.%s", name_space, name);
1496 hash = mono_metadata_str_hash (full_name) % table_size;
1497 if (full_name != full_name_buf)
1500 entry = &table [hash * 2];
1502 if (entry [0] != 0) {
1503 t = &image->tables [MONO_TABLE_TYPEDEF];
1506 guint32 index = entry [0];
1507 guint32 next = entry [1];
1508 guint32 token = mono_metadata_make_token (MONO_TABLE_TYPEDEF, index);
1510 name_table_accesses ++;
1512 mono_metadata_decode_row (t, index - 1, cols, MONO_TYPEDEF_SIZE);
1514 name2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
1515 name_space2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
1517 if (!strcmp (name, name2) && !strcmp (name_space, name_space2)) {
1519 *klass = mono_class_get (image, token);
1524 nspace_table = g_hash_table_lookup (amodule->name_cache, name_space);
1525 if (!nspace_table) {
1526 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
1527 g_hash_table_insert (amodule->name_cache, (char*)name_space2, nspace_table);
1529 g_hash_table_insert (nspace_table, (char*)name2, *klass);
1536 entry = &table [next * 2];
1549 * decode_mono_eh_frame:
1551 * Decode the EH information emitted by our modified LLVM compiler and construct a
1552 * MonoJitInfo structure from it.
1553 * LOCKING: Acquires the domain lock.
1556 decode_llvm_mono_eh_frame (MonoAotModule *amodule, MonoDomain *domain,
1557 MonoMethod *method, guint8 *code,
1558 MonoJitExceptionInfo *clauses, int num_clauses,
1559 int extra_size, GSList **nesting,
1560 int *this_reg, int *this_offset)
1563 guint8 *fde, *cie, *code_start, *code_end;
1564 int version, fde_count;
1566 int i, j, pos, left, right, offset, offset1, offset2, code_len;
1567 MonoJitExceptionInfo *ei;
1568 guint32 fde_len, ei_len, nested_len, nindex;
1569 gpointer *type_info;
1571 MonoLLVMFDEInfo info;
1573 g_assert (amodule->mono_eh_frame);
1575 p = amodule->mono_eh_frame;
1577 /* p points to data emitted by LLVM in DwarfException::EmitMonoEHFrame () */
1581 g_assert (version == 1);
1583 p = ALIGN_PTR_TO (p, 4);
1585 fde_count = *(guint32*)p;
1589 /* There is +1 entry in the table */
1590 cie = p + ((fde_count + 1) * 8);
1592 /* Binary search in the table to find the entry for code */
1593 offset = code - amodule->mono_eh_frame;
1598 pos = (left + right) / 2;
1600 offset1 = table [(pos * 2)];
1601 if (pos + 1 == fde_count)
1603 offset2 = amodule->code_end - amodule->code;
1605 offset2 = table [(pos + 1) * 2];
1607 if (offset < offset1)
1609 else if (offset >= offset2)
1615 code_start = amodule->mono_eh_frame + table [(pos * 2)];
1616 /* This won't overflow because there is +1 entry in the table */
1617 code_end = amodule->mono_eh_frame + table [(pos * 2) + 2];
1618 code_len = code_end - code_start;
1620 g_assert (code >= code_start && code < code_end);
1622 fde = amodule->mono_eh_frame + table [(pos * 2) + 1];
1623 /* This won't overflow because there is +1 entry in the table */
1624 fde_len = table [(pos * 2) + 2 + 1] - table [(pos * 2) + 1];
1626 mono_unwind_decode_llvm_mono_fde (fde, fde_len, cie, code_start, &info);
1628 ei_len = info.ex_info_len;
1629 type_info = info.type_info;
1630 *this_reg = info.this_reg;
1631 *this_offset = info.this_offset;
1633 /* Count number of nested clauses */
1635 for (i = 0; i < ei_len; ++i) {
1636 /* This might be unaligned */
1637 gint32 cindex1 = read32 (type_info [i]);
1640 for (l = nesting [cindex1]; l; l = l->next) {
1641 gint32 nesting_cindex = GPOINTER_TO_INT (l->data);
1643 for (j = 0; j < ei_len; ++j) {
1644 gint32 cindex2 = read32 (type_info [j]);
1646 if (cindex2 == nesting_cindex)
1653 * LLVM might represent one IL region with multiple regions, so have to
1654 * allocate a new JI.
1657 mono_domain_alloc0 (domain, MONO_SIZEOF_JIT_INFO + (sizeof (MonoJitExceptionInfo) * (ei_len + nested_len)) + extra_size);
1659 jinfo->code_size = code_len;
1660 jinfo->used_regs = mono_cache_unwind_info (info.unw_info, info.unw_info_len);
1661 jinfo->method = method;
1662 jinfo->code_start = code;
1663 jinfo->domain_neutral = 0;
1664 /* This signals that used_regs points to a normal cached unwind info */
1665 jinfo->from_aot = 0;
1666 jinfo->num_clauses = ei_len + nested_len;
1668 for (i = 0; i < ei_len; ++i) {
1670 * orig_jinfo contains the original IL exception info saved by the AOT
1671 * compiler, we have to combine that with the information produced by LLVM
1673 /* The type_info entries contain IL clause indexes */
1674 int clause_index = read32 (type_info [i]);
1675 MonoJitExceptionInfo *jei = &jinfo->clauses [i];
1676 MonoJitExceptionInfo *orig_jei = &clauses [clause_index];
1678 g_assert (clause_index < num_clauses);
1679 jei->flags = orig_jei->flags;
1680 jei->data.catch_class = orig_jei->data.catch_class;
1682 jei->try_start = ei [i].try_start;
1683 jei->try_end = ei [i].try_end;
1684 jei->handler_start = ei [i].handler_start;
1686 /* Make sure we transition to thumb when a handler starts */
1687 if (amodule->thumb_end && (guint8*)jei->handler_start < amodule->thumb_end)
1688 jei->handler_start = (void*)((mgreg_t)jei->handler_start + 1);
1691 /* See exception_cb () in mini-llvm.c as to why this is needed */
1693 for (i = 0; i < ei_len; ++i) {
1694 gint32 cindex1 = read32 (type_info [i]);
1697 for (l = nesting [cindex1]; l; l = l->next) {
1698 gint32 nesting_cindex = GPOINTER_TO_INT (l->data);
1700 for (j = 0; j < ei_len; ++j) {
1701 gint32 cindex2 = read32 (type_info [j]);
1703 if (cindex2 == nesting_cindex) {
1705 * The try interval comes from the nested clause, everything else from the
1708 memcpy (&jinfo->clauses [nindex], &jinfo->clauses [j], sizeof (MonoJitExceptionInfo));
1709 jinfo->clauses [nindex].try_start = jinfo->clauses [i].try_start;
1710 jinfo->clauses [nindex].try_end = jinfo->clauses [i].try_end;
1716 g_assert (nindex == ei_len + nested_len);
1722 * LOCKING: Acquires the domain lock.
1725 decode_exception_debug_info (MonoAotModule *amodule, MonoDomain *domain,
1726 MonoMethod *method, guint8* ex_info, guint8 *addr,
1727 guint8 *code, guint32 code_len)
1729 int i, buf_len, num_clauses;
1731 guint used_int_regs, flags;
1732 gboolean has_generic_jit_info, has_dwarf_unwind_info, has_clauses, has_seq_points, has_try_block_holes;
1733 gboolean from_llvm, has_gc_map;
1735 int generic_info_size, try_holes_info_size, num_holes, this_reg = 0, this_offset = 0;
1737 /* Load the method info from the AOT file */
1740 flags = decode_value (p, &p);
1741 has_generic_jit_info = (flags & 1) != 0;
1742 has_dwarf_unwind_info = (flags & 2) != 0;
1743 has_clauses = (flags & 4) != 0;
1744 has_seq_points = (flags & 8) != 0;
1745 from_llvm = (flags & 16) != 0;
1746 has_try_block_holes = (flags & 32) != 0;
1747 has_gc_map = (flags & 64) != 0;
1749 if (has_dwarf_unwind_info) {
1752 offset = decode_value (p, &p);
1753 g_assert (offset < (1 << 30));
1754 used_int_regs = offset;
1756 used_int_regs = decode_value (p, &p);
1758 if (has_generic_jit_info)
1759 generic_info_size = sizeof (MonoGenericJitInfo);
1761 generic_info_size = 0;
1763 if (has_try_block_holes) {
1764 num_holes = decode_value (p, &p);
1765 try_holes_info_size = sizeof (MonoTryBlockHoleTableJitInfo) + num_holes * sizeof (MonoTryBlockHoleJitInfo);
1767 num_holes = try_holes_info_size = 0;
1769 /* Exception table */
1771 num_clauses = decode_value (p, &p);
1776 MonoJitExceptionInfo *clauses;
1780 * Part of the info is encoded by the AOT compiler, the rest is in the .eh_frame
1783 clauses = g_new0 (MonoJitExceptionInfo, num_clauses);
1784 nesting = g_new0 (GSList*, num_clauses);
1786 for (i = 0; i < num_clauses; ++i) {
1787 MonoJitExceptionInfo *ei = &clauses [i];
1789 ei->flags = decode_value (p, &p);
1791 if (decode_value (p, &p))
1792 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
1794 /* Read the list of nesting clauses */
1796 int nesting_index = decode_value (p, &p);
1797 if (nesting_index == -1)
1799 nesting [i] = g_slist_prepend (nesting [i], GINT_TO_POINTER (nesting_index));
1803 jinfo = decode_llvm_mono_eh_frame (amodule, domain, method, code, clauses, num_clauses, generic_info_size + try_holes_info_size, nesting, &this_reg, &this_offset);
1804 jinfo->from_llvm = 1;
1807 for (i = 0; i < num_clauses; ++i)
1808 g_slist_free (nesting [i]);
1812 mono_domain_alloc0 (domain, MONO_SIZEOF_JIT_INFO + (sizeof (MonoJitExceptionInfo) * num_clauses) + generic_info_size + try_holes_info_size);
1813 jinfo->num_clauses = num_clauses;
1815 for (i = 0; i < jinfo->num_clauses; ++i) {
1816 MonoJitExceptionInfo *ei = &jinfo->clauses [i];
1818 ei->flags = decode_value (p, &p);
1820 ei->exvar_offset = decode_value (p, &p);
1822 if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER || ei->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
1823 ei->data.filter = code + decode_value (p, &p);
1825 if (decode_value (p, &p))
1826 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
1829 ei->try_start = code + decode_value (p, &p);
1830 ei->try_end = code + decode_value (p, &p);
1831 ei->handler_start = code + decode_value (p, &p);
1834 jinfo->code_size = code_len;
1835 jinfo->used_regs = used_int_regs;
1836 jinfo->method = method;
1837 jinfo->code_start = code;
1838 jinfo->domain_neutral = 0;
1839 jinfo->from_aot = 1;
1842 if (has_generic_jit_info) {
1843 MonoGenericJitInfo *gi;
1845 jinfo->has_generic_jit_info = 1;
1847 gi = mono_jit_info_get_generic_jit_info (jinfo);
1851 gi->has_this = this_reg != -1;
1852 gi->this_reg = this_reg;
1853 gi->this_offset = this_offset;
1855 gi->has_this = decode_value (p, &p);
1856 gi->this_reg = decode_value (p, &p);
1857 gi->this_offset = decode_value (p, &p);
1860 /* This currently contains no data */
1861 gi->generic_sharing_context = g_new0 (MonoGenericSharingContext, 1);
1863 jinfo->method = decode_resolve_method_ref (amodule, p, &p);
1866 if (has_try_block_holes) {
1867 MonoTryBlockHoleTableJitInfo *table;
1869 jinfo->has_try_block_holes = 1;
1871 table = mono_jit_info_get_try_block_hole_table_info (jinfo);
1874 table->num_holes = (guint16)num_holes;
1875 for (i = 0; i < num_holes; ++i) {
1876 MonoTryBlockHoleJitInfo *hole = &table->holes [i];
1877 hole->clause = decode_value (p, &p);
1878 hole->length = decode_value (p, &p);
1879 hole->offset = decode_value (p, &p);
1883 if (has_seq_points) {
1884 MonoSeqPointInfo *seq_points;
1885 int il_offset, native_offset, last_il_offset, last_native_offset, j;
1887 int len = decode_value (p, &p);
1889 seq_points = g_malloc0 (sizeof (MonoSeqPointInfo) + (len - MONO_ZERO_LEN_ARRAY) * sizeof (SeqPoint));
1890 seq_points->len = len;
1891 last_il_offset = last_native_offset = 0;
1892 for (i = 0; i < len; ++i) {
1893 SeqPoint *sp = &seq_points->seq_points [i];
1894 il_offset = last_il_offset + decode_value (p, &p);
1895 native_offset = last_native_offset + decode_value (p, &p);
1897 sp->il_offset = il_offset;
1898 sp->native_offset = native_offset;
1900 sp->next_len = decode_value (p, &p);
1901 sp->next = g_new (int, sp->next_len);
1902 for (j = 0; j < sp->next_len; ++j)
1903 sp->next [j] = decode_value (p, &p);
1905 last_il_offset = il_offset;
1906 last_native_offset = native_offset;
1909 mono_domain_lock (domain);
1910 g_hash_table_insert (domain_jit_info (domain)->seq_points, method, seq_points);
1911 mono_domain_unlock (domain);
1914 /* Load debug info */
1915 buf_len = decode_value (p, &p);
1916 mono_debug_add_aot_method (domain, method, code, p, buf_len);
1920 int map_size = decode_value (p, &p);
1921 /* The GC map requires 4 bytes of alignment */
1922 while ((guint64)(gsize)p % 4)
1928 if (amodule != jinfo->method->klass->image->aot_module) {
1931 ji_to_amodule = g_hash_table_new (NULL, NULL);
1932 g_hash_table_insert (ji_to_amodule, jinfo, amodule);
1940 * mono_aot_get_unwind_info:
1942 * Return a pointer to the DWARF unwind info belonging to JI.
1945 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
1947 MonoAotModule *amodule = ji->method->klass->image->aot_module;
1949 guint8 *code = ji->code_start;
1952 g_assert (ji->from_aot);
1954 if (!(code >= amodule->code && code <= amodule->code_end)) {
1955 /* ji belongs to a different aot module than amodule */
1957 g_assert (ji_to_amodule);
1958 amodule = g_hash_table_lookup (ji_to_amodule, ji);
1960 g_assert (code >= amodule->code && code <= amodule->code_end);
1964 p = amodule->unwind_info + ji->used_regs;
1965 *unwind_info_len = decode_value (p, &p);
1969 static G_GNUC_UNUSED int
1970 compare_ints (const void *a, const void *b)
1972 return *(gint32*)a - *(gint32*)b;
1976 msort_code_offsets_internal (gint32 *array, int lo, int hi, gint32 *scratch)
1978 int mid = (lo + hi) / 2;
1985 for (i = lo; i < hi; ++i)
1986 if (array [(i * 2)] > array [(i * 2) + 2])
1989 /* Already sorted */
1993 msort_code_offsets_internal (array, lo, mid, scratch);
1994 msort_code_offsets_internal (array, mid + 1, hi, scratch);
1996 if (array [mid * 2] < array [(mid + 1) * 2])
2002 for (i = lo; i <= hi; i ++) {
2003 if (t_lo <= mid && ((t_hi > hi) || array [t_lo * 2] < array [t_hi * 2])) {
2004 scratch [(i * 2)] = array [t_lo * 2];
2005 scratch [(i * 2) + 1] = array [(t_lo *2) + 1];
2008 scratch [(i * 2)] = array [t_hi * 2];
2009 scratch [(i * 2) + 1] = array [(t_hi *2) + 1];
2013 for (i = lo; i <= hi; ++i) {
2014 array [(i * 2)] = scratch [i * 2];
2015 array [(i * 2) + 1] = scratch [(i * 2) + 1];
2020 msort_code_offsets (gint32 *array, int len)
2024 scratch = g_new (gint32, len * 2);
2025 msort_code_offsets_internal (array, 0, len - 1, scratch);
2030 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
2032 int pos, left, right, offset, offset1, offset2, code_len;
2033 int method_index, table_len, is_wrapper;
2035 MonoAotModule *amodule = image->aot_module;
2038 guint8 *code, *ex_info, *p;
2040 int nmethods = amodule->info.nmethods;
2041 gint32 *code_offsets;
2047 if (domain != mono_get_root_domain ())
2051 offset = (guint8*)addr - amodule->code;
2053 /* Compute a sorted table mapping code offsets to method indexes. */
2054 if (!amodule->sorted_code_offsets) {
2056 code_offsets = g_new0 (gint32, nmethods * 2);
2058 for (i = 0; i < nmethods; ++i) {
2059 /* Skip the -1 entries to speed up sorting */
2060 if (amodule->code_offsets [i] == 0xffffffff)
2062 code_offsets [(offsets_len * 2)] = amodule->code_offsets [i];
2063 code_offsets [(offsets_len *2) + 1] = i;
2066 /* Use a merge sort as this is mostly sorted */
2067 msort_code_offsets (code_offsets, offsets_len);
2068 //qsort (code_offsets, offsets_len, sizeof (gint32) * 2, compare_ints);
2069 for (i = 0; i < offsets_len -1; ++i)
2070 g_assert (code_offsets [(i * 2)] <= code_offsets [(i + 1) * 2]);
2072 if (InterlockedCompareExchangePointer ((gpointer*)&amodule->sorted_code_offsets, code_offsets, NULL) != NULL)
2073 /* Somebody got in before us */
2074 g_free (code_offsets);
2075 amodule->sorted_code_offsets_len = offsets_len;
2078 code_offsets = amodule->sorted_code_offsets;
2079 offsets_len = amodule->sorted_code_offsets_len;
2081 /* Binary search in the sorted_code_offsets table */
2083 right = offsets_len;
2085 pos = (left + right) / 2;
2087 offset1 = code_offsets [(pos * 2)];
2088 if (pos + 1 == offsets_len)
2089 offset2 = amodule->code_end - amodule->code;
2091 offset2 = code_offsets [(pos + 1) * 2];
2093 if (offset < offset1)
2095 else if (offset >= offset2)
2101 g_assert (offset >= code_offsets [(pos * 2)]);
2102 if (pos + 1 < offsets_len)
2103 g_assert (offset < code_offsets [((pos + 1) * 2)]);
2104 method_index = code_offsets [(pos * 2) + 1];
2106 code = &amodule->code [amodule->code_offsets [method_index]];
2107 ex_info = &amodule->blob [mono_aot_get_offset (amodule->ex_info_offsets, method_index)];
2109 if (pos == offsets_len - 1)
2110 code_len = amodule->code_end - code;
2112 code_len = code_offsets [(pos + 1) * 2] - code_offsets [pos * 2];
2114 g_assert ((guint8*)code <= (guint8*)addr && (guint8*)addr < (guint8*)code + code_len);
2116 /* Might be a wrapper/extra method */
2117 if (amodule->extra_methods) {
2119 method = g_hash_table_lookup (amodule->extra_methods, GUINT_TO_POINTER (method_index));
2126 if (method_index >= image->tables [MONO_TABLE_METHOD].rows) {
2128 * This is hit for extra methods which are called directly, so they are
2129 * not in amodule->extra_methods.
2131 table_len = amodule->extra_method_info_offsets [0];
2132 table = amodule->extra_method_info_offsets + 1;
2139 pos = ((left + right) / 2);
2141 g_assert (pos < table_len);
2143 if (table [pos * 2] < method_index)
2145 else if (table [pos * 2] > method_index)
2151 p = amodule->blob + table [(pos * 2) + 1];
2152 is_wrapper = decode_value (p, &p);
2153 g_assert (!is_wrapper);
2154 method = decode_resolve_method_ref (amodule, p, &p);
2157 token = mono_metadata_make_token (MONO_TABLE_METHOD, method_index + 1);
2158 method = mono_get_method (image, token, NULL);
2165 //printf ("F: %s\n", mono_method_full_name (method, TRUE));
2167 jinfo = decode_exception_debug_info (amodule, domain, method, ex_info, addr, code, code_len);
2169 g_assert ((guint8*)addr >= (guint8*)jinfo->code_start);
2170 g_assert ((guint8*)addr < (guint8*)jinfo->code_start + jinfo->code_size);
2172 /* Add it to the normal JitInfo tables */
2173 mono_jit_info_table_add (domain, jinfo);
2179 decode_patch (MonoAotModule *aot_module, MonoMemPool *mp, MonoJumpInfo *ji, guint8 *buf, guint8 **endbuf)
2187 case MONO_PATCH_INFO_METHOD:
2188 case MONO_PATCH_INFO_METHOD_JUMP:
2189 case MONO_PATCH_INFO_ICALL_ADDR:
2190 case MONO_PATCH_INFO_METHOD_RGCTX: {
2194 res = decode_method_ref (aot_module, &ref, p, &p);
2198 if (!ref.method && !mono_aot_only && !ref.no_aot_trampoline && (ji->type == MONO_PATCH_INFO_METHOD) && (mono_metadata_token_table (ref.token) == MONO_TABLE_METHOD)) {
2199 ji->data.target = mono_create_ftnptr (mono_domain_get (), mono_create_jit_trampoline_from_token (ref.image, ref.token));
2200 ji->type = MONO_PATCH_INFO_ABS;
2204 ji->data.method = ref.method;
2206 ji->data.method = mono_get_method (ref.image, ref.token, NULL);
2207 g_assert (ji->data.method);
2208 mono_class_init (ji->data.method->klass);
2212 case MONO_PATCH_INFO_INTERNAL_METHOD:
2213 case MONO_PATCH_INFO_JIT_ICALL_ADDR: {
2214 guint32 len = decode_value (p, &p);
2216 ji->data.name = (char*)p;
2220 case MONO_PATCH_INFO_METHODCONST:
2222 ji->data.method = decode_resolve_method_ref (aot_module, p, &p);
2223 if (!ji->data.method)
2226 case MONO_PATCH_INFO_VTABLE:
2227 case MONO_PATCH_INFO_CLASS:
2228 case MONO_PATCH_INFO_IID:
2229 case MONO_PATCH_INFO_ADJUSTED_IID:
2231 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2232 if (!ji->data.klass)
2235 case MONO_PATCH_INFO_CLASS_INIT:
2236 case MONO_PATCH_INFO_DELEGATE_TRAMPOLINE:
2237 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2238 if (!ji->data.klass)
2241 case MONO_PATCH_INFO_IMAGE:
2242 ji->data.image = load_image (aot_module, decode_value (p, &p), TRUE);
2243 if (!ji->data.image)
2246 case MONO_PATCH_INFO_FIELD:
2247 case MONO_PATCH_INFO_SFLDA:
2249 ji->data.field = decode_field_info (aot_module, p, &p);
2250 if (!ji->data.field)
2253 case MONO_PATCH_INFO_SWITCH:
2254 ji->data.table = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoBBTable));
2255 ji->data.table->table_size = decode_value (p, &p);
2256 table = mono_domain_alloc (mono_domain_get (), sizeof (gpointer) * ji->data.table->table_size);
2257 ji->data.table->table = (MonoBasicBlock**)table;
2258 for (i = 0; i < ji->data.table->table_size; i++)
2259 table [i] = (gpointer)(gssize)decode_value (p, &p);
2261 case MONO_PATCH_INFO_R4: {
2264 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (float));
2265 val = decode_value (p, &p);
2266 *(float*)ji->data.target = *(float*)&val;
2269 case MONO_PATCH_INFO_R8: {
2273 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (double));
2275 val [0] = decode_value (p, &p);
2276 val [1] = decode_value (p, &p);
2277 v = ((guint64)val [1] << 32) | ((guint64)val [0]);
2278 *(double*)ji->data.target = *(double*)&v;
2281 case MONO_PATCH_INFO_LDSTR:
2282 image = load_image (aot_module, decode_value (p, &p), TRUE);
2285 ji->data.token = mono_jump_info_token_new (mp, image, MONO_TOKEN_STRING + decode_value (p, &p));
2287 case MONO_PATCH_INFO_RVA:
2288 case MONO_PATCH_INFO_DECLSEC:
2289 case MONO_PATCH_INFO_LDTOKEN:
2290 case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
2292 image = load_image (aot_module, decode_value (p, &p), TRUE);
2295 ji->data.token = mono_jump_info_token_new (mp, image, decode_value (p, &p));
2297 ji->data.token->has_context = decode_value (p, &p);
2298 if (ji->data.token->has_context) {
2299 gboolean res = decode_generic_context (aot_module, &ji->data.token->context, p, &p);
2304 case MONO_PATCH_INFO_EXC_NAME:
2305 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2306 if (!ji->data.klass)
2308 ji->data.name = ji->data.klass->name;
2310 case MONO_PATCH_INFO_METHOD_REL:
2311 ji->data.offset = decode_value (p, &p);
2313 case MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG:
2314 case MONO_PATCH_INFO_GENERIC_CLASS_INIT:
2315 case MONO_PATCH_INFO_MONITOR_ENTER:
2316 case MONO_PATCH_INFO_MONITOR_EXIT:
2317 case MONO_PATCH_INFO_GC_CARD_TABLE_ADDR:
2319 case MONO_PATCH_INFO_RGCTX_FETCH: {
2321 MonoJumpInfoRgctxEntry *entry;
2323 entry = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
2324 entry->method = decode_resolve_method_ref (aot_module, p, &p);
2325 entry->in_mrgctx = decode_value (p, &p);
2326 entry->info_type = decode_value (p, &p);
2327 entry->data = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
2328 entry->data->type = decode_value (p, &p);
2330 res = decode_patch (aot_module, mp, entry->data, p, &p);
2333 ji->data.rgctx_entry = entry;
2336 case MONO_PATCH_INFO_SEQ_POINT_INFO:
2338 case MONO_PATCH_INFO_LLVM_IMT_TRAMPOLINE: {
2339 MonoJumpInfoImtTramp *imt_tramp = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoImtTramp));
2341 imt_tramp->method = decode_resolve_method_ref (aot_module, p, &p);
2342 imt_tramp->vt_offset = decode_value (p, &p);
2344 ji->data.imt_tramp = imt_tramp;
2348 g_warning ("unhandled type %d", ji->type);
2349 g_assert_not_reached ();
2360 static MonoJumpInfo*
2361 load_patch_info (MonoAotModule *aot_module, MonoMemPool *mp, int n_patches,
2362 guint32 **got_slots,
2363 guint8 *buf, guint8 **endbuf)
2365 MonoJumpInfo *patches;
2371 patches = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo) * n_patches);
2373 *got_slots = g_malloc (sizeof (guint32) * n_patches);
2375 for (pindex = 0; pindex < n_patches; ++pindex) {
2376 MonoJumpInfo *ji = &patches [pindex];
2381 got_offset = decode_value (p, &p);
2383 if (aot_module->got [got_offset]) {
2384 /* Already loaded */
2385 //printf ("HIT!\n");
2387 shared_p = aot_module->blob + mono_aot_get_offset (aot_module->got_info_offsets, got_offset);
2389 ji->type = decode_value (shared_p, &shared_p);
2391 res = decode_patch (aot_module, mp, ji, shared_p, &shared_p);
2396 (*got_slots) [pindex] = got_offset;
2403 g_free (*got_slots);
2410 register_jump_target_got_slot (MonoDomain *domain, MonoMethod *method, gpointer *got_slot)
2413 * Jump addresses cannot be patched by the trampoline code since it
2414 * does not have access to the caller's address. Instead, we collect
2415 * the addresses of the GOT slots pointing to a method, and patch
2416 * them after the method has been compiled.
2418 MonoJitDomainInfo *info = domain_jit_info (domain);
2421 mono_domain_lock (domain);
2422 if (!info->jump_target_got_slot_hash)
2423 info->jump_target_got_slot_hash = g_hash_table_new (NULL, NULL);
2424 list = g_hash_table_lookup (info->jump_target_got_slot_hash, method);
2425 list = g_slist_prepend (list, got_slot);
2426 g_hash_table_insert (info->jump_target_got_slot_hash, method, list);
2427 mono_domain_unlock (domain);
2433 * Load the method identified by METHOD_INDEX from the AOT image. Return a
2434 * pointer to the native code of the method, or NULL if not found.
2435 * METHOD might not be set if the caller only has the image/token info.
2438 load_method (MonoDomain *domain, MonoAotModule *amodule, MonoImage *image, MonoMethod *method, guint32 token, int method_index)
2441 gboolean from_plt = method == NULL;
2443 int i, pindex, n_patches, used_strings;
2444 gboolean keep_patches = TRUE;
2446 MonoJitInfo *jinfo = NULL;
2447 guint8 *code, *info;
2449 if (mono_profiler_get_events () & MONO_PROFILE_ENTER_LEAVE)
2452 if ((domain != mono_get_root_domain ()) && (!(amodule->info.opts & MONO_OPT_SHARED)))
2453 /* Non shared AOT code can't be used in other appdomains */
2456 if (amodule->out_of_date)
2459 if (amodule->code_offsets [method_index] == 0xffffffff) {
2460 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
2464 method = mono_get_method (image, token, NULL);
2465 full_name = mono_method_full_name (method, TRUE);
2466 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.\n", full_name);
2472 code = &amodule->code [amodule->code_offsets [method_index]];
2474 info = &amodule->blob [mono_aot_get_offset (amodule->method_info_offsets, method_index)];
2476 if (amodule->thumb_end && code < amodule->thumb_end) {
2477 /* Convert this into a thumb address */
2478 g_assert ((amodule->code_offsets [method_index] & 0x1) == 0);
2479 code = &amodule->code [amodule->code_offsets [method_index] + 1];
2483 if (!amodule->methods_loaded)
2484 amodule->methods_loaded = g_new0 (guint32, amodule->info.nmethods + 1);
2487 if ((amodule->methods_loaded [method_index / 32] >> (method_index % 32)) & 0x1)
2490 if (mono_last_aot_method != -1) {
2491 if (mono_jit_stats.methods_aot >= mono_last_aot_method)
2493 else if (mono_jit_stats.methods_aot == mono_last_aot_method - 1) {
2495 method = mono_get_method (image, token, NULL);
2497 char *name = mono_method_full_name (method, TRUE);
2498 printf ("LAST AOT METHOD: %s.\n", name);
2501 printf ("LAST AOT METHOD: %p %d\n", code, method_index);
2509 klass = method->klass;
2510 decode_klass_ref (amodule, p, &p);
2512 klass = decode_klass_ref (amodule, p, &p);
2515 if (amodule->info.opts & MONO_OPT_SHARED)
2516 used_strings = decode_value (p, &p);
2520 for (i = 0; i < used_strings; i++) {
2521 guint token = decode_value (p, &p);
2522 mono_ldstr (mono_get_root_domain (), image, mono_metadata_token_index (token));
2525 if (amodule->info.opts & MONO_OPT_SHARED)
2526 keep_patches = FALSE;
2528 n_patches = decode_value (p, &p);
2530 keep_patches = FALSE;
2533 MonoJumpInfo *patches;
2539 mp = mono_mempool_new ();
2541 patches = load_patch_info (amodule, mp, n_patches, &got_slots, p, &p);
2542 if (patches == NULL)
2545 for (pindex = 0; pindex < n_patches; ++pindex) {
2546 MonoJumpInfo *ji = &patches [pindex];
2548 if (!amodule->got [got_slots [pindex]]) {
2549 amodule->got [got_slots [pindex]] = mono_resolve_patch_target (method, domain, code, ji, TRUE);
2550 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
2551 amodule->got [got_slots [pindex]] = mono_create_ftnptr (domain, amodule->got [got_slots [pindex]]);
2552 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
2553 register_jump_target_got_slot (domain, ji->data.method, &(amodule->got [got_slots [pindex]]));
2555 ji->type = MONO_PATCH_INFO_NONE;
2561 mono_mempool_destroy (mp);
2564 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
2568 method = mono_get_method (image, token, NULL);
2570 full_name = mono_method_full_name (method, TRUE);
2573 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
2575 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);
2581 mono_jit_stats.methods_aot++;
2583 amodule->methods_loaded [method_index / 32] |= 1 << (method_index % 32);
2587 if (method && method->wrapper_type)
2588 g_hash_table_insert (amodule->method_to_code, method, code);
2592 if (mono_profiler_get_events () & MONO_PROFILE_JIT_COMPILATION) {
2596 method = mono_get_method (image, token, NULL);
2599 mono_profiler_method_jit (method);
2600 jinfo = mono_jit_info_table_find (domain, (char*)code);
2602 mono_profiler_method_end_jit (method, jinfo, MONO_PROFILE_OK);
2605 if (from_plt && klass && !klass->generic_container)
2606 mono_runtime_class_init (mono_class_vtable (domain, klass));
2611 /* FIXME: The space in domain->mp is wasted */
2612 if (amodule->info.opts & MONO_OPT_SHARED)
2613 /* No need to cache patches */
2614 mono_mempool_destroy (mp);
2623 find_extra_method_in_amodule (MonoAotModule *amodule, MonoMethod *method, const char *name)
2625 guint32 table_size, entry_size, hash;
2626 guint32 *table, *entry;
2628 static guint32 n_extra_decodes;
2633 table_size = amodule->extra_method_table [0];
2634 table = amodule->extra_method_table + 1;
2637 hash = mono_aot_method_hash (method) % table_size;
2639 entry = &table [hash * entry_size];
2646 guint32 key = entry [0];
2647 guint32 value = entry [1];
2648 guint32 next = entry [entry_size - 1];
2651 int is_wrapper_name;
2653 p = amodule->blob + key;
2654 is_wrapper_name = decode_value (p, &p);
2655 if (is_wrapper_name) {
2656 int wrapper_type = decode_value (p, &p);
2657 if (wrapper_type == method->wrapper_type && !strcmp (name, (char*)p)) {
2665 if (!amodule->method_ref_to_method)
2666 amodule->method_ref_to_method = g_hash_table_new (NULL, NULL);
2667 m = g_hash_table_lookup (amodule->method_ref_to_method, p);
2670 m = decode_resolve_method_ref_with_target (amodule, method, p, &p);
2673 g_hash_table_insert (amodule->method_ref_to_method, orig_p, m);
2682 /* Special case: wrappers of shared generic methods */
2683 if (m && method->wrapper_type && m->wrapper_type == m->wrapper_type &&
2684 method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
2685 MonoMethod *w1 = mono_marshal_method_from_wrapper (method);
2686 MonoMethod *w2 = mono_marshal_method_from_wrapper (m);
2688 if (w1->is_inflated && ((MonoMethodInflated *)w1)->declaring == w2) {
2694 /* Methods decoded needlessly */
2696 //printf ("%d %s %s %p\n", n_extra_decodes, mono_method_full_name (method, TRUE), mono_method_full_name (m, TRUE), orig_p);
2702 entry = &table [next * entry_size];
2711 add_module_cb (gpointer key, gpointer value, gpointer user_data)
2713 g_ptr_array_add ((GPtrArray*)user_data, value);
2717 * find_extra_method:
2719 * Try finding METHOD in the extra_method table in all AOT images.
2720 * Return its method index, or 0xffffff if not found. Set OUT_AMODULE to the AOT
2721 * module where the method was found.
2724 find_extra_method (MonoMethod *method, MonoAotModule **out_amodule)
2731 if (method->wrapper_type)
2732 name = mono_aot_wrapper_name (method);
2734 /* Try the method's module first */
2735 *out_amodule = method->klass->image->aot_module;
2736 index = find_extra_method_in_amodule (method->klass->image->aot_module, method, name);
2737 if (index != 0xffffff) {
2743 * Try all other modules.
2744 * This is needed because generic instances klass->image points to the image
2745 * containing the generic definition, but the native code is generated to the
2746 * AOT image which contains the reference.
2749 /* Make a copy to avoid doing the search inside the aot lock */
2750 modules = g_ptr_array_new ();
2752 g_hash_table_foreach (aot_modules, add_module_cb, modules);
2756 for (i = 0; i < modules->len; ++i) {
2757 MonoAotModule *amodule = g_ptr_array_index (modules, i);
2759 if (amodule != method->klass->image->aot_module)
2760 index = find_extra_method_in_amodule (amodule, method, name);
2761 if (index != 0xffffff) {
2762 *out_amodule = amodule;
2767 g_ptr_array_free (modules, TRUE);
2774 * mono_aot_get_method:
2776 * Return a pointer to the AOTed native code for METHOD if it can be found,
2778 * On platforms with function pointers, this doesn't return a function pointer.
2781 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
2783 MonoClass *klass = method->klass;
2784 guint32 method_index;
2785 MonoAotModule *amodule = klass->image->aot_module;
2791 if (amodule->out_of_date)
2794 if ((method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
2795 (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
2796 (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
2797 (method->flags & METHOD_ATTRIBUTE_ABSTRACT))
2801 * Use the original method instead of its invoke-with-check wrapper.
2802 * This is not a problem when using full-aot, since it doesn't support
2805 if (mono_aot_only && method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)
2806 return mono_aot_get_method (domain, mono_marshal_method_from_wrapper (method));
2808 g_assert (klass->inited);
2810 /* Find method index */
2811 if (method->is_inflated && mono_method_is_generic_sharable_impl_full (method, FALSE, FALSE)) {
2813 * For generic methods, we store the fully shared instance in place of the
2816 method = mono_method_get_declaring_generic_method (method);
2817 method_index = mono_metadata_token_index (method->token) - 1;
2818 } else if (method->is_inflated || !method->token) {
2819 /* This hash table is used to avoid the slower search in the extra_method_table in the AOT image */
2821 code = g_hash_table_lookup (amodule->method_to_code, method);
2826 method_index = find_extra_method (method, &amodule);
2828 * Special case the ICollection<T> wrappers for arrays, as they cannot
2829 * be statically enumerated, and each wrapper ends up calling the same
2832 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED && method->klass->rank && strstr (method->name, "System.Collections.Generic")) {
2833 MonoMethod *m = mono_aot_get_array_helper_from_wrapper (method);
2835 code = mono_aot_get_method (domain, m);
2837 if (mono_method_needs_static_rgctx_invoke (m, FALSE)) {
2838 code = mono_create_static_rgctx_trampoline (m, mono_create_ftnptr (domain, code));
2839 /* The call above returns an ftnptr */
2840 code = mono_get_addr_from_ftnptr (code);
2848 * Special case Array.GetGenericValueImpl which is a generic icall.
2849 * Generic sharing currently can't handle it, but the icall returns data using
2850 * an out parameter, so the managed-to-native wrappers can share the same code.
2852 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass == mono_defaults.array_class && !strcmp (method->name, "GetGenericValueImpl")) {
2854 MonoGenericContext ctx;
2855 MonoType *args [16];
2857 if (mono_method_signature (method)->params [1]->type == MONO_TYPE_OBJECT)
2858 /* Avoid recursion */
2861 m = mono_class_get_method_from_name (mono_defaults.array_class, "GetGenericValueImpl", 2);
2864 memset (&ctx, 0, sizeof (ctx));
2865 args [0] = &mono_defaults.object_class->byval_arg;
2866 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
2868 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method (m, &ctx), TRUE, TRUE);
2871 * Get the code for the <object> instantiation which should be emitted into
2872 * the mscorlib aot image by the AOT compiler.
2874 code = mono_aot_get_method (domain, m);
2879 /* Same for CompareExchange<T> */
2880 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass->image == mono_defaults.corlib && !strcmp (method->klass->name_space, "System.Threading") && !strcmp (method->klass->name, "Interlocked") && !strcmp (method->name, "CompareExchange")) {
2882 MonoGenericContext ctx;
2883 MonoType *args [16];
2884 gpointer iter = NULL;
2886 while ((m = mono_class_get_methods (method->klass, &iter))) {
2887 if (mono_method_signature (m)->generic_param_count && !strcmp (m->name, "CompareExchange"))
2892 memset (&ctx, 0, sizeof (ctx));
2893 args [0] = &mono_defaults.object_class->byval_arg;
2894 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
2896 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method (m, &ctx), TRUE, TRUE);
2898 /* Avoid recursion */
2903 * Get the code for the <object> instantiation which should be emitted into
2904 * the mscorlib aot image by the AOT compiler.
2906 code = mono_aot_get_method (domain, m);
2911 if (method_index == 0xffffff && method->is_inflated && mono_method_is_generic_sharable_impl_full (method, FALSE, TRUE)) {
2912 /* Partial sharing */
2913 method_index = find_extra_method (mini_get_shared_method (method), &amodule);
2916 if (method_index == 0xffffff) {
2917 if (mono_aot_only && mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
2920 full_name = mono_method_full_name (method, TRUE);
2921 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.\n", full_name);
2927 if (method_index == 0xffffff)
2930 /* Needed by find_jit_info */
2932 if (!amodule->extra_methods)
2933 amodule->extra_methods = g_hash_table_new (NULL, NULL);
2934 g_hash_table_insert (amodule->extra_methods, GUINT_TO_POINTER (method_index), method);
2938 method_index = mono_metadata_token_index (method->token) - 1;
2941 return load_method (domain, amodule, klass->image, method, method->token, method_index);
2945 * Same as mono_aot_get_method, but we try to avoid loading any metadata from the
2949 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
2951 MonoAotModule *aot_module = image->aot_module;
2957 method_index = mono_metadata_token_index (token) - 1;
2959 return load_method (domain, aot_module, image, NULL, token, method_index);
2965 } IsGotEntryUserData;
2968 check_is_got_entry (gpointer key, gpointer value, gpointer user_data)
2970 IsGotEntryUserData *data = (IsGotEntryUserData*)user_data;
2971 MonoAotModule *aot_module = (MonoAotModule*)value;
2973 if (aot_module->got && (data->addr >= (guint8*)(aot_module->got)) && (data->addr < (guint8*)(aot_module->got + aot_module->info.got_size)))
2978 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
2980 IsGotEntryUserData user_data;
2985 user_data.addr = addr;
2986 user_data.res = FALSE;
2988 g_hash_table_foreach (aot_modules, check_is_got_entry, &user_data);
2991 return user_data.res;
2996 MonoAotModule *module;
2997 } FindAotModuleUserData;
3000 find_aot_module_cb (gpointer key, gpointer value, gpointer user_data)
3002 FindAotModuleUserData *data = (FindAotModuleUserData*)user_data;
3003 MonoAotModule *aot_module = (MonoAotModule*)value;
3005 if ((data->addr >= (guint8*)(aot_module->code)) && (data->addr < (guint8*)(aot_module->code_end)))
3006 data->module = aot_module;
3009 static inline MonoAotModule*
3010 find_aot_module (guint8 *code)
3012 FindAotModuleUserData user_data;
3017 /* Reading these need no locking */
3018 if (((gsize)code < aot_code_low_addr) || ((gsize)code > aot_code_high_addr))
3021 user_data.addr = code;
3022 user_data.module = NULL;
3025 g_hash_table_foreach (aot_modules, find_aot_module_cb, &user_data);
3028 return user_data.module;
3032 mono_aot_patch_plt_entry (guint8 *code, gpointer *got, mgreg_t *regs, guint8 *addr)
3035 * Since AOT code is only used in the root domain,
3036 * mono_domain_get () != mono_get_root_domain () means the calling method
3037 * is AppDomain:InvokeInDomain, so this is the same check as in
3038 * mono_method_same_domain () but without loading the metadata for the method.
3040 if (mono_domain_get () == mono_get_root_domain ())
3041 mono_arch_patch_plt_entry (code, got, regs, addr);
3045 * mono_aot_plt_resolve:
3047 * This function is called by the entries in the PLT to resolve the actual method that
3048 * needs to be called. It returns a trampoline to the method and patches the PLT entry.
3049 * Returns NULL if the something cannot be loaded.
3052 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
3054 #ifdef MONO_ARCH_AOT_SUPPORTED
3055 guint8 *p, *target, *plt_entry;
3057 MonoAotModule *module = (MonoAotModule*)aot_module;
3058 gboolean res, no_ftnptr = FALSE;
3061 //printf ("DYN: %p %d\n", aot_module, plt_info_offset);
3063 p = &module->blob [plt_info_offset];
3065 ji.type = decode_value (p, &p);
3067 mp = mono_mempool_new_size (512);
3068 res = decode_patch (module, mp, &ji, p, &p);
3071 mono_mempool_destroy (mp);
3076 * Avoid calling resolve_patch_target in the full-aot case if possible, since
3077 * it would create a trampoline, and we don't need that.
3078 * We could do this only if the method does not need the special handling
3079 * in mono_magic_trampoline ().
3081 if (mono_aot_only && ji.type == MONO_PATCH_INFO_METHOD && !ji.data.method->is_generic && !mono_method_check_context_used (ji.data.method) && !(ji.data.method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) &&
3082 !mono_method_needs_static_rgctx_invoke (ji.data.method, FALSE)) {
3083 target = mono_jit_compile_method (ji.data.method);
3086 target = mono_resolve_patch_target (NULL, mono_domain_get (), NULL, &ji, TRUE);
3090 * The trampoline expects us to return a function descriptor on platforms which use
3091 * it, but resolve_patch_target returns a direct function pointer for some type of
3092 * patches, so have to translate between the two.
3093 * FIXME: Clean this up, but how ?
3095 if (ji.type == MONO_PATCH_INFO_ABS || ji.type == MONO_PATCH_INFO_INTERNAL_METHOD || ji.type == MONO_PATCH_INFO_CLASS_INIT || ji.type == MONO_PATCH_INFO_ICALL_ADDR || ji.type == MONO_PATCH_INFO_JIT_ICALL_ADDR || ji.type == MONO_PATCH_INFO_RGCTX_FETCH) {
3096 /* These should already have a function descriptor */
3097 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3098 /* Our function descriptors have a 0 environment, gcc created ones don't */
3099 if (ji.type != MONO_PATCH_INFO_INTERNAL_METHOD && ji.type != MONO_PATCH_INFO_JIT_ICALL_ADDR && ji.type != MONO_PATCH_INFO_ICALL_ADDR)
3100 g_assert (((gpointer*)target) [2] == 0);
3103 } else if (!no_ftnptr) {
3104 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3105 g_assert (((gpointer*)target) [2] != 0);
3107 target = mono_create_ftnptr (mono_domain_get (), target);
3110 mono_mempool_destroy (mp);
3112 /* Patch the PLT entry with target which might be the actual method not a trampoline */
3113 plt_entry = mono_aot_get_plt_entry (code);
3114 g_assert (plt_entry);
3115 mono_aot_patch_plt_entry (plt_entry, module->got, NULL, target);
3119 g_assert_not_reached ();
3127 * Initialize the PLT table of the AOT module. Called lazily when the first AOT
3128 * method in the module is loaded to avoid committing memory by writing to it.
3129 * LOCKING: Assumes the AOT lock is held.
3132 init_plt (MonoAotModule *amodule)
3137 if (amodule->plt_inited)
3140 tramp = mono_create_specific_trampoline (amodule, MONO_TRAMPOLINE_AOT_PLT, mono_get_root_domain (), NULL);
3143 * Initialize the PLT entries in the GOT to point to the default targets.
3146 tramp = mono_create_ftnptr (mono_domain_get (), tramp);
3147 for (i = 1; i < amodule->info.plt_size; ++i)
3148 /* All the default entries point to the AOT trampoline */
3149 ((gpointer*)amodule->got)[amodule->info.plt_got_offset_base + i] = tramp;
3151 amodule->plt_inited = TRUE;
3155 * mono_aot_get_plt_entry:
3157 * Return the address of the PLT entry called by the code at CODE if exists.
3160 mono_aot_get_plt_entry (guint8 *code)
3162 MonoAotModule *amodule = find_aot_module (code);
3163 guint8 *target = NULL;
3169 if (amodule->thumb_end && code < amodule->thumb_end) {
3170 int s, j1, j2, imm10, imm11, i1, i2, imm32;
3175 * This is code generated by LLVM:
3176 * bl <plt entry stub>
3184 /* code should be right after a BL */
3185 code = (guint8*)((mgreg_t)code & ~1);
3186 base = (guint8*)((mgreg_t)code & ~3);
3188 t1 = ((guint16*)bl) [0];
3189 t2 = ((guint16*)bl) [1];
3191 g_assert ((t1 >> 11) == 0b11110);
3193 s = (t1 >> 10) & 0x1;
3194 imm10 = (t1 >> 0) & 0x3ff;
3195 j1 = (t2 >> 13) & 0x1;
3196 j2 = (t2 >> 11) & 0x1;
3199 i1 = (s ^ j1) ? 0 : 1;
3200 i2 = (s ^ j2) ? 0 : 1;
3202 imm32 = (imm11 << 1) | (imm10 << 12) | (i2 << 22) | (i1 << 23);
3206 target = code + imm32;
3208 /* target now points to the thumb->arm stub */
3210 g_assert (((guint16*)target) [0] == 0x4778);
3212 g_assert (((guint16*)target) [1] == 0x46c0);
3220 #ifdef MONO_ARCH_AOT_SUPPORTED
3221 target = mono_arch_get_call_target (code);
3223 g_assert_not_reached ();
3226 if ((target >= (guint8*)(amodule->plt)) && (target < (guint8*)(amodule->plt_end)))
3233 * mono_aot_get_plt_info_offset:
3235 * Return the PLT info offset belonging to the plt entry called by CODE.
3238 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
3240 guint8 *plt_entry = mono_aot_get_plt_entry (code);
3242 g_assert (plt_entry);
3244 /* The offset is embedded inside the code after the plt entry */
3245 #ifdef MONO_ARCH_AOT_SUPPORTED
3246 return mono_arch_get_plt_info_offset (plt_entry, regs, code);
3248 g_assert_not_reached ();
3254 mono_create_ftnptr_malloc (guint8 *code)
3256 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3257 MonoPPCFunctionDescriptor *ftnptr = g_malloc0 (sizeof (MonoPPCFunctionDescriptor));
3259 ftnptr->code = code;
3270 * mono_aot_register_jit_icall:
3272 * Register a JIT icall which is called by trampolines in full-aot mode. This should
3273 * be called from mono_arch_init () during startup.
3276 mono_aot_register_jit_icall (const char *name, gpointer addr)
3278 /* No need for locking */
3279 if (!aot_jit_icall_hash)
3280 aot_jit_icall_hash = g_hash_table_new (g_str_hash, g_str_equal);
3281 g_hash_table_insert (aot_jit_icall_hash, (char*)name, addr);
3287 * Load the function named NAME from the aot image.
3290 load_function (MonoAotModule *amodule, const char *name)
3294 int n_patches, pindex;
3300 symbol = g_strdup_printf ("%s", name);
3301 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&code);
3304 g_error ("Symbol '%s' not found in AOT file '%s'.\n", name, amodule->aot_name);
3306 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT FOUND function '%s' in AOT file '%s'.\n", name, amodule->aot_name);
3310 symbol = g_strdup_printf ("%s_p", name);
3311 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&p);
3314 /* Nothing to patch */
3317 p = amodule->blob + *(guint32*)p;
3319 /* Similar to mono_aot_load_method () */
3321 n_patches = decode_value (p, &p);
3324 MonoJumpInfo *patches;
3327 mp = mono_mempool_new ();
3329 patches = load_patch_info (amodule, mp, n_patches, &got_slots, p, &p);
3332 for (pindex = 0; pindex < n_patches; ++pindex) {
3333 MonoJumpInfo *ji = &patches [pindex];
3336 if (amodule->got [got_slots [pindex]])
3340 * When this code is executed, the runtime may not be initalized yet, so
3341 * resolve the patch info by hand.
3343 if (ji->type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
3344 if (!strcmp (ji->data.name, "mono_get_lmf_addr")) {
3345 target = mono_get_lmf_addr;
3346 } else if (!strcmp (ji->data.name, "mono_thread_force_interruption_checkpoint")) {
3347 target = mono_thread_force_interruption_checkpoint;
3348 } else if (!strcmp (ji->data.name, "mono_exception_from_token")) {
3349 target = mono_exception_from_token;
3350 } else if (!strcmp (ji->data.name, "mono_throw_exception")) {
3351 target = mono_get_throw_exception ();
3352 } else if (strstr (ji->data.name, "trampoline_func_") == ji->data.name) {
3353 int tramp_type2 = atoi (ji->data.name + strlen ("trampoline_func_"));
3354 target = (gpointer)mono_get_trampoline_func (tramp_type2);
3355 } else if (strstr (ji->data.name, "specific_trampoline_lazy_fetch_") == ji->data.name) {
3356 /* atoll is needed because the the offset is unsigned */
3360 res = sscanf (ji->data.name, "specific_trampoline_lazy_fetch_%u", &slot);
3361 g_assert (res == 1);
3362 target = mono_create_specific_trampoline (GUINT_TO_POINTER (slot), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, mono_get_root_domain (), NULL);
3363 target = mono_create_ftnptr_malloc (target);
3364 } else if (!strcmp (ji->data.name, "specific_trampoline_monitor_enter")) {
3365 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_MONITOR_ENTER, mono_get_root_domain (), NULL);
3366 target = mono_create_ftnptr_malloc (target);
3367 } else if (!strcmp (ji->data.name, "specific_trampoline_monitor_exit")) {
3368 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_MONITOR_EXIT, mono_get_root_domain (), NULL);
3369 target = mono_create_ftnptr_malloc (target);
3370 } else if (!strcmp (ji->data.name, "specific_trampoline_generic_class_init")) {
3371 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_GENERIC_CLASS_INIT, mono_get_root_domain (), NULL);
3372 target = mono_create_ftnptr_malloc (target);
3373 } else if (!strcmp (ji->data.name, "mono_thread_get_and_clear_pending_exception")) {
3374 target = mono_thread_get_and_clear_pending_exception;
3375 } else if (strstr (ji->data.name, "generic_trampoline_")) {
3376 target = mono_aot_get_trampoline (ji->data.name);
3377 } else if (aot_jit_icall_hash && g_hash_table_lookup (aot_jit_icall_hash, ji->data.name)) {
3378 /* Registered by mono_arch_init () */
3379 target = g_hash_table_lookup (aot_jit_icall_hash, ji->data.name);
3381 fprintf (stderr, "Unknown relocation '%s'\n", ji->data.name);
3382 g_assert_not_reached ();
3386 /* Hopefully the code doesn't have patches which need method or
3389 target = mono_resolve_patch_target (NULL, NULL, code, ji, FALSE);
3393 amodule->got [got_slots [pindex]] = target;
3398 mono_mempool_destroy (mp);
3405 * Return the trampoline identified by NAME from the mscorlib AOT file.
3406 * On ppc64, this returns a function descriptor.
3409 mono_aot_get_trampoline (const char *name)
3412 MonoAotModule *amodule;
3414 image = mono_defaults.corlib;
3417 amodule = image->aot_module;
3420 return mono_create_ftnptr_malloc (load_function (amodule, name));
3423 /* Return a given kind of trampoline */
3425 get_numerous_trampoline (MonoAotTrampoline tramp_type, int n_got_slots, MonoAotModule **out_amodule, guint32 *got_offset, guint32 *out_tramp_size)
3427 MonoAotModule *amodule;
3428 int index, tramp_size;
3431 /* Currently, we keep all trampolines in the mscorlib AOT image */
3432 image = mono_defaults.corlib;
3437 amodule = image->aot_module;
3440 *out_amodule = amodule;
3442 if (amodule->trampoline_index [tramp_type] == amodule->info.num_trampolines [tramp_type])
3443 g_error ("Ran out of trampolines of type %d in '%s' (%d)\n", tramp_type, image->name, amodule->info.num_trampolines [tramp_type]);
3445 index = amodule->trampoline_index [tramp_type] ++;
3449 *got_offset = amodule->info.trampoline_got_offset_base [tramp_type] + (index * n_got_slots);
3451 tramp_size = amodule->info.trampoline_size [tramp_type];
3454 *out_tramp_size = tramp_size;
3456 return amodule->trampolines [tramp_type] + (index * tramp_size);
3460 * Return a specific trampoline from the AOT file.
3463 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
3465 MonoAotModule *amodule;
3466 guint32 got_offset, tramp_size;
3467 guint8 *code, *tramp;
3468 static gpointer generic_trampolines [MONO_TRAMPOLINE_NUM];
3469 static gboolean inited;
3470 static guint32 num_trampolines;
3476 mono_counters_register ("Specific trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &num_trampolines);
3485 if (!generic_trampolines [tramp_type]) {
3488 symbol = mono_get_generic_trampoline_name (tramp_type);
3489 generic_trampolines [tramp_type] = mono_aot_get_trampoline (symbol);
3493 tramp = generic_trampolines [tramp_type];
3496 code = get_numerous_trampoline (MONO_AOT_TRAMP_SPECIFIC, 2, &amodule, &got_offset, &tramp_size);
3498 amodule->got [got_offset] = tramp;
3499 amodule->got [got_offset + 1] = arg1;
3502 *code_len = tramp_size;
3508 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
3510 MonoAotModule *amodule;
3514 code = get_numerous_trampoline (MONO_AOT_TRAMP_STATIC_RGCTX, 2, &amodule, &got_offset, NULL);
3516 amodule->got [got_offset] = ctx;
3517 amodule->got [got_offset + 1] = addr;
3519 /* The caller expects an ftnptr */
3520 return mono_create_ftnptr (mono_domain_get (), code);
3524 mono_aot_get_unbox_trampoline (MonoMethod *method)
3526 guint32 method_index = mono_metadata_token_index (method->token) - 1;
3527 MonoAotModule *amodule;
3531 if (method->is_inflated && !mono_method_is_generic_sharable_impl (method, FALSE)) {
3532 guint32 index = find_extra_method (method, &amodule);
3533 g_assert (index != 0xffffff);
3535 symbol = g_strdup_printf ("ut_e_%d", index);
3537 amodule = method->klass->image->aot_module;
3540 symbol = g_strdup_printf ("ut_%d", method_index);
3542 code = load_function (amodule, symbol);
3545 /* The caller expects an ftnptr */
3546 return mono_create_ftnptr (mono_domain_get (), code);
3550 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
3555 symbol = mono_get_rgctx_fetch_trampoline_name (slot);
3556 code = load_function (mono_defaults.corlib->aot_module, symbol);
3558 /* The caller expects an ftnptr */
3559 return mono_create_ftnptr (mono_domain_get (), code);
3563 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
3569 MonoAotModule *amodule;
3571 code = get_numerous_trampoline (MONO_AOT_TRAMP_IMT_THUNK, 1, &amodule, &got_offset, NULL);
3573 /* Save the entries into an array */
3574 buf = mono_domain_alloc (domain, (count + 1) * 2 * sizeof (gpointer));
3575 for (i = 0; i < count; ++i) {
3576 MonoIMTCheckItem *item = imt_entries [i];
3578 g_assert (item->key);
3580 g_assert (!item->has_target_code);
3582 buf [(i * 2)] = item->key;
3583 buf [(i * 2) + 1] = &(vtable->vtable [item->value.vtable_slot]);
3585 buf [(count * 2)] = NULL;
3586 buf [(count * 2) + 1] = fail_tramp;
3588 amodule->got [got_offset] = buf;
3594 * mono_aot_set_make_unreadable:
3596 * Set whenever to make all mmaped memory unreadable. In conjuction with a
3597 * SIGSEGV handler, this is useful to find out which pages the runtime tries to read.
3600 mono_aot_set_make_unreadable (gboolean unreadable)
3604 make_unreadable = unreadable;
3606 if (make_unreadable && !inited) {
3607 mono_counters_register ("AOT pagefaults", MONO_COUNTER_JIT | MONO_COUNTER_INT, &n_pagefaults);
3612 MonoAotModule *module;
3617 find_map (gpointer key, gpointer value, gpointer user_data)
3619 MonoAotModule *module = (MonoAotModule*)value;
3620 FindMapUserData *data = (FindMapUserData*)user_data;
3623 if ((data->ptr >= module->mem_begin) && (data->ptr < module->mem_end))
3624 data->module = module;
3627 static MonoAotModule*
3628 find_module_for_addr (void *ptr)
3630 FindMapUserData data;
3632 if (!make_unreadable)
3636 data.ptr = (guint8*)ptr;
3639 g_hash_table_foreach (aot_modules, (GHFunc)find_map, &data);
3646 * mono_aot_is_pagefault:
3648 * Should be called from a SIGSEGV signal handler to find out whenever @ptr is
3649 * within memory allocated by this module.
3652 mono_aot_is_pagefault (void *ptr)
3654 if (!make_unreadable)
3658 * Not signal safe, but SIGSEGV's are synchronous, and
3659 * this is only turned on by a MONO_DEBUG option.
3661 return find_module_for_addr (ptr) != NULL;
3665 * mono_aot_handle_pagefault:
3667 * Handle a pagefault caused by an unreadable page by making it readable again.
3670 mono_aot_handle_pagefault (void *ptr)
3672 #ifndef PLATFORM_WIN32
3673 guint8* start = (guint8*)ROUND_DOWN (((gssize)ptr), mono_pagesize ());
3677 res = mono_mprotect (start, mono_pagesize (), MONO_MMAP_READ|MONO_MMAP_WRITE|MONO_MMAP_EXEC);
3678 g_assert (res == 0);
3689 mono_aot_init (void)
3694 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
3700 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
3706 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
3712 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
3718 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
3724 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
3730 mono_aot_get_plt_entry (guint8 *code)
3736 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
3742 mono_aot_patch_plt_entry (guint8 *code, gpointer *got, mgreg_t *regs, guint8 *addr)
3747 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
3753 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
3755 g_assert_not_reached ();
3761 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
3763 g_assert_not_reached ();
3768 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
3770 g_assert_not_reached ();
3775 mono_aot_get_trampoline (const char *name)
3777 g_assert_not_reached ();
3782 mono_aot_get_unbox_trampoline (MonoMethod *method)
3784 g_assert_not_reached ();
3789 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
3791 g_assert_not_reached ();
3796 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
3798 g_assert_not_reached ();
3803 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
3805 g_assert_not_reached ();
3810 mono_aot_register_jit_icall (const char *name, gpointer addr)