2 * aot-runtime.c: mono Ahead of Time compiler
5 * Dietmar Maurer (dietmar@ximian.com)
6 * Zoltan Varga (vargaz@gmail.com)
8 * (C) 2002 Ximian, Inc.
12 #include <sys/types.h>
18 #ifdef HAVE_SYS_MMAN_H
27 #ifdef HAVE_EXECINFO_H
34 #ifdef HAVE_SYS_WAIT_H
35 #include <sys/wait.h> /* for WIFEXITED, WEXITSTATUS */
38 #ifdef HAVE_DL_ITERATE_PHDR
42 #include <mono/metadata/tabledefs.h>
43 #include <mono/metadata/class.h>
44 #include <mono/metadata/object.h>
45 #include <mono/metadata/tokentype.h>
46 #include <mono/metadata/appdomain.h>
47 #include <mono/metadata/debug-helpers.h>
48 #include <mono/metadata/assembly.h>
49 #include <mono/metadata/metadata-internals.h>
50 #include <mono/metadata/marshal.h>
51 #include <mono/metadata/gc-internal.h>
52 #include <mono/metadata/monitor.h>
53 #include <mono/metadata/threads-types.h>
54 #include <mono/utils/mono-logger-internal.h>
55 #include <mono/utils/mono-mmap.h>
56 #include "mono/utils/mono-compiler.h"
57 #include <mono/utils/mono-counters.h>
65 #define SHARED_EXT ".dll"
66 #elif ((defined(__ppc__) || defined(__powerpc__) || defined(__ppc64__)) || defined(__MACH__)) && !defined(__linux__)
67 #define SHARED_EXT ".dylib"
69 #define SHARED_EXT ".so"
72 #define ALIGN_PTR_TO(ptr,align) (gpointer)((((gssize)(ptr)) + (align - 1)) & (~(align - 1)))
73 #define ROUND_DOWN(VALUE,SIZE) ((VALUE) & ~((SIZE) - 1))
75 typedef struct MonoAotModule {
77 /* Pointer to the Global Offset Table */
79 GHashTable *name_cache;
80 GHashTable *extra_methods;
81 /* Maps methods to their code */
82 GHashTable *method_to_code;
83 /* Maps pointers into the method info to the methods themselves */
84 GHashTable *method_ref_to_method;
85 MonoAssemblyName *image_names;
87 MonoAssembly *assembly;
88 MonoImage **image_table;
89 guint32 image_table_len;
100 /* This contains <offset, index> pairs sorted by offset */
101 /* This is needed because LLVM emitted methods can be in any order */
102 gint32 *sorted_code_offsets;
103 gint32 sorted_code_offsets_len;
104 guint32 *method_info_offsets;
105 guint32 *got_info_offsets;
106 guint32 *ex_info_offsets;
107 guint32 *class_info_offsets;
108 guint32 *methods_loaded;
109 guint16 *class_name_table;
110 guint32 *extra_method_table;
111 guint32 *extra_method_info_offsets;
114 /* Points to the GNU .eh_frame_hdr section, if it exists */
115 guint8 *eh_frame_hdr;
117 /* Points to the .ARM.exidx section, if it exists */
119 guint32 arm_exidx_size;
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;
173 init_plt (MonoAotModule *info);
175 /*****************************************************/
177 /*****************************************************/
182 * Load one of the images referenced by AMODULE. Returns NULL if the image is not
183 * found, and sets the loader error if SET_ERROR is TRUE.
186 load_image (MonoAotModule *amodule, int index, gboolean set_error)
188 MonoAssembly *assembly;
189 MonoImageOpenStatus status;
191 g_assert (index < amodule->image_table_len);
193 if (amodule->image_table [index])
194 return amodule->image_table [index];
195 if (amodule->out_of_date)
198 assembly = mono_assembly_load (&amodule->image_names [index], NULL, &status);
200 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);
201 amodule->out_of_date = TRUE;
204 char *full_name = mono_stringify_assembly_name (&amodule->image_names [index]);
205 mono_loader_set_error_assembly_load (full_name, FALSE);
211 if (strcmp (assembly->image->guid, amodule->image_guids [index])) {
212 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);
213 amodule->out_of_date = TRUE;
217 amodule->image_table [index] = assembly->image;
218 return assembly->image;
222 decode_value (guint8 *ptr, guint8 **rptr)
227 if ((b & 0x80) == 0){
230 } else if ((b & 0x40) == 0){
231 len = ((b & 0x3f) << 8 | ptr [1]);
233 } else if (b != 0xff) {
234 len = ((b & 0x1f) << 24) |
241 len = (ptr [1] << 24) | (ptr [2] << 16) | (ptr [3] << 8) | ptr [4];
247 //printf ("DECODE: %d.\n", len);
252 * mono_aot_get_method:
254 * Decode an offset table emitted by emit_offset_table (), returning the INDEXth
258 mono_aot_get_offset (guint32 *table, int index)
260 int i, group, ngroups, index_entry_size;
261 int start_offset, offset, noffsets, group_size;
262 guint8 *data_start, *p;
263 guint32 *index32 = NULL;
264 guint16 *index16 = NULL;
266 noffsets = table [0];
267 group_size = table [1];
269 index_entry_size = table [3];
270 group = index / group_size;
272 if (index_entry_size == 2) {
273 index16 = (guint16*)&table [4];
274 data_start = (guint8*)&index16 [ngroups];
275 p = data_start + index16 [group];
277 index32 = (guint32*)&table [4];
278 data_start = (guint8*)&index32 [ngroups];
279 p = data_start + index32 [group];
282 /* offset will contain the value of offsets [group * group_size] */
283 offset = start_offset = decode_value (p, &p);
284 for (i = group * group_size + 1; i <= index; ++i) {
285 offset += decode_value (p, &p);
288 //printf ("Offset lookup: %d -> %d, start=%d, p=%d\n", index, offset, start_offset, table [3 + group]);
294 decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf);
297 decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf);
299 static MonoGenericInst*
300 decode_generic_inst (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
303 MonoType **type_argv;
304 MonoGenericInst *inst;
307 type_argc = decode_value (p, &p);
308 type_argv = g_new0 (MonoType*, type_argc);
310 for (i = 0; i < type_argc; ++i) {
311 MonoClass *pclass = decode_klass_ref (module, p, &p);
316 type_argv [i] = &pclass->byval_arg;
319 inst = mono_metadata_get_generic_inst (type_argc, type_argv);
328 decode_generic_context (MonoAotModule *module, MonoGenericContext *ctx, guint8 *buf, guint8 **endbuf)
330 gboolean has_class_inst, has_method_inst;
333 has_class_inst = decode_value (p, &p);
334 if (has_class_inst) {
335 ctx->class_inst = decode_generic_inst (module, p, &p);
336 if (!ctx->class_inst)
339 has_method_inst = decode_value (p, &p);
340 if (has_method_inst) {
341 ctx->method_inst = decode_generic_inst (module, p, &p);
342 if (!ctx->method_inst)
351 decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
354 MonoClass *klass, *eklass;
358 token = decode_value (p, &p);
363 if (mono_metadata_token_table (token) == 0) {
364 image = load_image (module, decode_value (p, &p), TRUE);
367 klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF + token);
368 } else if (mono_metadata_token_table (token) == MONO_TABLE_TYPESPEC) {
369 if (token == MONO_TOKEN_TYPE_SPEC) {
370 MonoTypeEnum type = decode_value (p, &p);
372 if (type == MONO_TYPE_GENERICINST) {
374 MonoGenericContext ctx;
377 gclass = decode_klass_ref (module, p, &p);
380 g_assert (gclass->generic_container);
382 memset (&ctx, 0, sizeof (ctx));
383 ctx.class_inst = decode_generic_inst (module, p, &p);
386 type = mono_class_inflate_generic_type (&gclass->byval_arg, &ctx);
387 klass = mono_class_from_mono_type (type);
388 mono_metadata_free_type (type);
389 } else if ((type == MONO_TYPE_VAR) || (type == MONO_TYPE_MVAR)) {
391 MonoGenericContainer *container;
393 int num = decode_value (p, &p);
394 gboolean is_method = decode_value (p, &p);
397 MonoMethod *method_def;
398 g_assert (type == MONO_TYPE_MVAR);
399 method_def = decode_resolve_method_ref (module, p, &p);
403 container = mono_method_get_generic_container (method_def);
405 MonoClass *class_def;
406 g_assert (type == MONO_TYPE_VAR);
407 class_def = decode_klass_ref (module, p, &p);
411 container = class_def->generic_container;
414 g_assert (container);
416 // FIXME: Memory management
417 t = g_new0 (MonoType, 1);
419 t->data.generic_param = mono_generic_container_get_param (container, num);
421 // FIXME: Maybe use types directly to avoid
422 // the overhead of creating MonoClass-es
423 klass = mono_class_from_mono_type (t);
427 g_assert_not_reached ();
430 image = load_image (module, decode_value (p, &p), TRUE);
433 klass = mono_class_get (image, token);
435 } else if (token == MONO_TOKEN_TYPE_DEF) {
437 image = load_image (module, decode_value (p, &p), TRUE);
440 rank = decode_value (p, &p);
441 eklass = decode_klass_ref (module, p, &p);
442 klass = mono_array_class_get (eklass, rank);
444 g_assert_not_reached ();
452 static MonoClassField*
453 decode_field_info (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
455 MonoClass *klass = decode_klass_ref (module, buf, &buf);
462 token = MONO_TOKEN_FIELD_DEF + decode_value (p, &p);
466 return mono_class_get_field (klass, token);
470 * can_method_ref_match_method:
472 * Determine if calling decode_resolve_method_ref on P could return the same method as
473 * METHOD. This is an optimization to avoid calling decode_resolve_method_ref () which
474 * would create MonoMethods which are not needed etc.
477 can_method_ref_match_method (MonoAotModule *module, guint8 *buf, MonoMethod *method)
480 guint32 image_index, value;
482 /* Keep this in sync with decode_method_ref () */
483 value = decode_value (p, &p);
484 image_index = value >> 24;
486 if (image_index == MONO_AOT_METHODREF_WRAPPER) {
487 guint32 wrapper_type;
489 if (!method->wrapper_type)
492 wrapper_type = decode_value (p, &p);
494 if (method->wrapper_type != wrapper_type)
496 } else if (image_index == MONO_AOT_METHODREF_WRAPPER_NAME) {
498 } else if (image_index < MONO_AOT_METHODREF_MIN || image_index == MONO_AOT_METHODREF_METHODSPEC || image_index == MONO_AOT_METHODREF_GINST) {
499 if (method->wrapper_type)
509 * Decode a method reference, and return its image and token. This avoids loading
510 * metadata for the method if the caller does not need it. If the method has no token,
511 * then it is loaded from metadata and METHOD is set to the method instance.
514 decode_method_ref (MonoAotModule *module, guint32 *token, MonoMethod **method, gboolean *no_aot_trampoline, guint8 *buf, guint8 **endbuf)
516 guint32 image_index, value;
517 MonoImage *image = NULL;
522 if (no_aot_trampoline)
523 *no_aot_trampoline = FALSE;
525 value = decode_value (p, &p);
526 image_index = value >> 24;
528 if (image_index == MONO_AOT_METHODREF_NO_AOT_TRAMPOLINE) {
529 if (no_aot_trampoline)
530 *no_aot_trampoline = TRUE;
531 value = decode_value (p, &p);
532 image_index = value >> 24;
535 if (image_index == MONO_AOT_METHODREF_WRAPPER) {
536 guint32 wrapper_type;
538 wrapper_type = decode_value (p, &p);
541 image = mono_defaults.corlib;
543 switch (wrapper_type) {
544 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK: {
545 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
549 mono_class_init (m->klass);
550 *method = mono_marshal_get_remoting_invoke_with_check (m);
553 case MONO_WRAPPER_PROXY_ISINST: {
554 MonoClass *klass = decode_klass_ref (module, p, &p);
557 *method = mono_marshal_get_proxy_cancast (klass);
560 case MONO_WRAPPER_LDFLD:
561 case MONO_WRAPPER_LDFLDA:
562 case MONO_WRAPPER_STFLD:
563 case MONO_WRAPPER_ISINST: {
564 MonoClass *klass = decode_klass_ref (module, p, &p);
567 if (wrapper_type == MONO_WRAPPER_LDFLD)
568 *method = mono_marshal_get_ldfld_wrapper (&klass->byval_arg);
569 else if (wrapper_type == MONO_WRAPPER_LDFLDA)
570 *method = mono_marshal_get_ldflda_wrapper (&klass->byval_arg);
571 else if (wrapper_type == MONO_WRAPPER_STFLD)
572 *method = mono_marshal_get_stfld_wrapper (&klass->byval_arg);
573 else if (wrapper_type == MONO_WRAPPER_ISINST)
574 *method = mono_marshal_get_isinst (klass);
576 g_assert_not_reached ();
579 case MONO_WRAPPER_LDFLD_REMOTE:
580 *method = mono_marshal_get_ldfld_remote_wrapper (NULL);
582 case MONO_WRAPPER_STFLD_REMOTE:
583 *method = mono_marshal_get_stfld_remote_wrapper (NULL);
585 case MONO_WRAPPER_ALLOC: {
586 int atype = decode_value (p, &p);
588 *method = mono_gc_get_managed_allocator_by_type (atype);
591 case MONO_WRAPPER_WRITE_BARRIER:
592 *method = mono_gc_get_write_barrier ();
594 case MONO_WRAPPER_STELEMREF:
595 *method = mono_marshal_get_stelemref ();
597 case MONO_WRAPPER_SYNCHRONIZED: {
598 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
602 *method = mono_marshal_get_synchronized_wrapper (m);
605 case MONO_WRAPPER_UNKNOWN: {
606 MonoMethodDesc *desc;
607 MonoMethod *orig_method;
608 int subtype = decode_value (p, &p);
610 if (subtype == MONO_AOT_WRAPPER_MONO_ENTER)
611 desc = mono_method_desc_new ("Monitor:Enter", FALSE);
612 else if (subtype == MONO_AOT_WRAPPER_MONO_EXIT)
613 desc = mono_method_desc_new ("Monitor:Exit", FALSE);
615 g_assert_not_reached ();
616 orig_method = mono_method_desc_search_in_class (desc, mono_defaults.monitor_class);
617 g_assert (orig_method);
618 mono_method_desc_free (desc);
619 *method = mono_monitor_get_fast_path (orig_method);
622 case MONO_WRAPPER_RUNTIME_INVOKE: {
624 MonoMethod *m = decode_resolve_method_ref (module, p, &p);
628 *method = mono_marshal_get_runtime_invoke (m, FALSE);
631 case MONO_WRAPPER_MANAGED_TO_MANAGED: {
632 int subtype = decode_value (p, &p);
634 if (subtype == MONO_AOT_WRAPPER_ELEMENT_ADDR) {
635 int rank = decode_value (p, &p);
636 int elem_size = decode_value (p, &p);
638 *method = mono_marshal_get_array_address (rank, elem_size);
640 g_assert_not_reached ();
645 g_assert_not_reached ();
647 } else if (image_index == MONO_AOT_METHODREF_WRAPPER_NAME) {
648 /* Can't decode these */
649 g_assert_not_reached ();
650 } else if (image_index == MONO_AOT_METHODREF_METHODSPEC) {
651 image_index = decode_value (p, &p);
652 *token = decode_value (p, &p);
654 image = load_image (module, image_index, TRUE);
657 } else if (image_index == MONO_AOT_METHODREF_GINST) {
659 MonoGenericContext ctx;
662 * These methods do not have a token which resolves them, so we
663 * resolve them immediately.
665 klass = decode_klass_ref (module, p, &p);
669 image_index = decode_value (p, &p);
670 *token = decode_value (p, &p);
672 image = load_image (module, image_index, TRUE);
676 *method = mono_get_method_full (image, *token, NULL, NULL);
680 memset (&ctx, 0, sizeof (ctx));
682 if (FALSE && klass->generic_class) {
683 ctx.class_inst = klass->generic_class->context.class_inst;
684 ctx.method_inst = NULL;
686 *method = mono_class_inflate_generic_method_full (*method, klass, &ctx);
689 memset (&ctx, 0, sizeof (ctx));
691 if (!decode_generic_context (module, &ctx, p, &p))
694 *method = mono_class_inflate_generic_method_full (*method, klass, &ctx);
695 } else if (image_index == MONO_AOT_METHODREF_ARRAY) {
699 klass = decode_klass_ref (module, p, &p);
702 method_type = decode_value (p, &p);
704 switch (method_type) {
706 *method = mono_class_get_method_from_name (klass, ".ctor", klass->rank);
709 *method = mono_class_get_method_from_name (klass, ".ctor", klass->rank * 2);
712 *method = mono_class_get_method_from_name (klass, "Get", -1);
715 *method = mono_class_get_method_from_name (klass, "Address", -1);
718 *method = mono_class_get_method_from_name (klass, "Set", -1);
721 g_assert_not_reached ();
724 g_assert (image_index < MONO_AOT_METHODREF_MIN);
725 *token = MONO_TOKEN_METHOD_DEF | (value & 0xffffff);
727 image = load_image (module, image_index, TRUE);
738 * decode_resolve_method_ref:
740 * Similar to decode_method_ref, but resolve and return the method itself.
743 decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf)
747 MonoImage *image = decode_method_ref (module, &token, &method, NULL, buf, endbuf);
753 method = mono_get_method (image, token, NULL);
758 create_cache_structure (void)
764 home = g_get_home_dir ();
768 tmp = g_build_filename (home, ".mono", NULL);
769 if (!g_file_test (tmp, G_FILE_TEST_IS_DIR)) {
770 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT creating directory %s", tmp);
774 err = mkdir (tmp, 0777);
777 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed: %s", g_strerror (errno));
783 tmp = g_build_filename (home, ".mono", "aot-cache", NULL);
784 if (!g_file_test (tmp, G_FILE_TEST_IS_DIR)) {
785 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT creating directory %s", tmp);
789 err = mkdir (tmp, 0777);
792 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed: %s", g_strerror (errno));
801 * load_aot_module_from_cache:
803 * Experimental code to AOT compile loaded assemblies on demand.
806 * - Add environment variable MONO_AOT_CACHE_OPTIONS
807 * - Add options for controlling the cache size
808 * - Handle full cache by deleting old assemblies lru style
809 * - Add options for excluding assemblies during development
810 * - Maybe add a threshold after an assembly is AOT compiled
811 * - invoking a new mono process is a security risk
812 * - recompile the AOT module if one of its dependencies changes
815 load_aot_module_from_cache (MonoAssembly *assembly, char **aot_name)
817 char *fname, *cmd, *tmp2, *aot_options;
826 if (assembly->image->dynamic)
829 create_cache_structure ();
831 home = g_get_home_dir ();
833 tmp2 = g_strdup_printf ("%s-%s%s", assembly->image->assembly_name, assembly->image->guid, SHARED_EXT);
834 fname = g_build_filename (home, ".mono", "aot-cache", tmp2, NULL);
838 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT trying to load from cache: '%s'.", fname);
839 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
842 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT not found.");
844 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT precompiling assembly '%s'... ", assembly->image->name);
846 aot_options = g_strdup_printf ("outfile=%s", fname);
848 if (spawn_compiler) {
849 /* FIXME: security */
850 /* FIXME: Has to pass the assembly loading path to the child process */
851 cmd = g_strdup_printf ("mono -O=all --aot=%s %s", aot_options, assembly->image->name);
853 res = g_spawn_command_line_sync (cmd, &out, &err, &exit_status, NULL);
855 #if !defined(HOST_WIN32) && !defined(__ppc__) && !defined(__ppc64__) && !defined(__powerpc__)
857 if (!WIFEXITED (exit_status) && (WEXITSTATUS (exit_status) == 0))
858 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT failed: %s.", err);
860 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT succeeded.");
867 res = mono_compile_assembly (assembly, mono_parse_default_optimizations (NULL), aot_options);
869 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT failed.");
871 mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT succeeded.");
875 module = mono_dl_open (fname, MONO_DL_LAZY, NULL);
877 g_free (aot_options);
884 find_symbol (MonoDl *module, gpointer *globals, const char *name, gpointer *value)
888 guint16 *table, *entry;
892 /* The first entry points to the hash */
896 table_size = table [0];
899 hash = mono_metadata_str_hash (name) % table_size;
901 entry = &table [hash * 2];
903 /* Search the hash for the index into the globals table */
905 while (entry [0] != 0) {
906 guint32 index = entry [0] - 1;
907 guint32 next = entry [1];
909 //printf ("X: %s %s\n", (char*)globals [index * 2], name);
911 if (!strcmp (globals [index * 2], name)) {
912 global_index = index;
917 entry = &table [next * 2];
923 if (global_index != -1)
924 *value = globals [global_index * 2 + 1];
928 char *err = mono_dl_symbol (module, name, value);
935 #ifndef SHT_ARM_EXIDX
936 #define SHT_ARM_EXIDX 0x70000001
939 #if defined(HAVE_DL_ITERATE_PHDR) && defined(PT_GNU_EH_FRAME)
941 dl_callback (struct dl_phdr_info *info, size_t size, void *data)
944 MonoAotModule *amodule = data;
946 if (!strcmp (amodule->aot_name, info->dlpi_name)) {
947 for (j = 0; j < info->dlpi_phnum; j++) {
948 if (info->dlpi_phdr [j].p_type == PT_GNU_EH_FRAME)
949 amodule->eh_frame_hdr = (guint8*)(info->dlpi_addr + info->dlpi_phdr [j].p_vaddr);
950 if (info->dlpi_phdr [j].p_type == SHT_ARM_EXIDX) {
951 amodule->arm_exidx = (guint8*)(info->dlpi_addr + info->dlpi_phdr [j].p_vaddr);
952 amodule->arm_exidx_size = info->dlpi_phdr [j].p_filesz;
963 load_aot_module (MonoAssembly *assembly, gpointer user_data)
966 MonoAotModule *amodule;
968 gboolean usable = TRUE;
969 char *saved_guid = NULL;
970 char *aot_version = NULL;
971 char *runtime_version, *build_info;
972 char *opt_flags = NULL;
974 gboolean full_aot = FALSE;
975 MonoAotFileInfo *file_info = NULL;
979 if (mono_compile_aot)
982 if (assembly->image->aot_module)
984 * Already loaded. This can happen because the assembly loading code might invoke
985 * the assembly load hooks multiple times for the same assembly.
989 if (assembly->image->dynamic)
992 if (mono_security_get_mode () == MONO_SECURITY_MODE_CAS)
996 if (static_aot_modules)
997 globals = g_hash_table_lookup (static_aot_modules, assembly->aname.name);
1003 /* Statically linked AOT module */
1005 aot_name = g_strdup_printf ("%s", assembly->aname.name);
1006 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "Found statically linked AOT module '%s'.\n", aot_name);
1009 sofile = load_aot_module_from_cache (assembly, &aot_name);
1012 aot_name = g_strdup_printf ("%s%s", assembly->image->name, SHARED_EXT);
1014 sofile = mono_dl_open (aot_name, MONO_DL_LAZY, &err);
1017 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed to load AOT module %s: %s\n", aot_name, err);
1023 if (!sofile && !globals) {
1024 if (mono_aot_only) {
1025 fprintf (stderr, "Failed to load AOT module '%s' in aot-only mode.\n", aot_name);
1032 find_symbol (sofile, globals, "mono_assembly_guid", (gpointer *) &saved_guid);
1033 find_symbol (sofile, globals, "mono_aot_version", (gpointer *) &aot_version);
1034 find_symbol (sofile, globals, "mono_aot_opt_flags", (gpointer *)&opt_flags);
1035 find_symbol (sofile, globals, "mono_runtime_version", (gpointer *)&runtime_version);
1036 find_symbol (sofile, globals, "mono_aot_got_addr", (gpointer *)&got_addr);
1038 if (!aot_version || strcmp (aot_version, MONO_AOT_FILE_VERSION)) {
1039 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s has wrong file format version (expected %s got %s)\n", aot_name, MONO_AOT_FILE_VERSION, aot_version);
1043 if (!saved_guid || strcmp (assembly->image->guid, saved_guid)) {
1044 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is out of date.\n", aot_name);
1049 build_info = mono_get_runtime_build_info ();
1050 if (!runtime_version || ((strlen (runtime_version) > 0 && strcmp (runtime_version, build_info)))) {
1051 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is compiled against runtime version '%s' while this runtime has version '%s'.\n", aot_name, runtime_version, build_info);
1054 g_free (build_info);
1056 find_symbol (sofile, globals, "mono_aot_file_info", (gpointer*)&file_info);
1057 g_assert (file_info);
1059 full_aot = ((MonoAotFileInfo*)file_info)->flags & MONO_AOT_FILE_FLAG_FULL_AOT;
1061 if (mono_aot_only && !full_aot) {
1062 fprintf (stderr, "Can't use AOT image '%s' in aot-only mode because it is not compiled with --aot=full.\n", aot_name);
1065 if (!mono_aot_only && full_aot) {
1066 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is compiled with --aot=full.\n", aot_name);
1070 if ((((MonoAotFileInfo*)file_info)->flags & MONO_AOT_FILE_FLAG_WITH_LLVM) && !mono_use_llvm) {
1071 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is compiled with LLVM.\n", aot_name);
1076 if (mono_aot_only) {
1077 fprintf (stderr, "Failed to load AOT module '%s' while running in aot-only mode.\n", aot_name);
1082 mono_dl_close (sofile);
1083 assembly->image->aot_module = NULL;
1087 amodule = g_new0 (MonoAotModule, 1);
1088 amodule->aot_name = aot_name;
1089 amodule->assembly = assembly;
1091 memcpy (&amodule->info, file_info, sizeof (*file_info));
1093 amodule->got = *got_addr;
1094 amodule->got [0] = assembly->image;
1095 amodule->globals = globals;
1096 amodule->sofile = sofile;
1097 amodule->method_to_code = g_hash_table_new (mono_aligned_addr_hash, NULL);
1099 /* Read image table */
1101 guint32 table_len, i;
1104 find_symbol (sofile, globals, "mono_image_table", (gpointer *)&table);
1107 table_len = *(guint32*)table;
1108 table += sizeof (guint32);
1109 amodule->image_table = g_new0 (MonoImage*, table_len);
1110 amodule->image_names = g_new0 (MonoAssemblyName, table_len);
1111 amodule->image_guids = g_new0 (char*, table_len);
1112 amodule->image_table_len = table_len;
1113 for (i = 0; i < table_len; ++i) {
1114 MonoAssemblyName *aname = &(amodule->image_names [i]);
1116 aname->name = g_strdup (table);
1117 table += strlen (table) + 1;
1118 amodule->image_guids [i] = g_strdup (table);
1119 table += strlen (table) + 1;
1121 aname->culture = g_strdup (table);
1122 table += strlen (table) + 1;
1123 memcpy (aname->public_key_token, table, strlen (table) + 1);
1124 table += strlen (table) + 1;
1126 table = ALIGN_PTR_TO (table, 8);
1127 aname->flags = *(guint32*)table;
1129 aname->major = *(guint32*)table;
1131 aname->minor = *(guint32*)table;
1133 aname->build = *(guint32*)table;
1135 aname->revision = *(guint32*)table;
1140 /* Read method and method_info tables */
1141 find_symbol (sofile, globals, "code_offsets", (gpointer*)&amodule->code_offsets);
1142 find_symbol (sofile, globals, "methods", (gpointer*)&amodule->code);
1143 find_symbol (sofile, globals, "methods_end", (gpointer*)&amodule->code_end);
1144 find_symbol (sofile, globals, "method_info_offsets", (gpointer*)&amodule->method_info_offsets);
1145 find_symbol (sofile, globals, "ex_info_offsets", (gpointer*)&amodule->ex_info_offsets);
1146 find_symbol (sofile, globals, "blob", (gpointer*)&amodule->blob);
1147 find_symbol (sofile, globals, "class_info_offsets", (gpointer*)&amodule->class_info_offsets);
1148 find_symbol (sofile, globals, "class_name_table", (gpointer *)&amodule->class_name_table);
1149 find_symbol (sofile, globals, "extra_method_table", (gpointer *)&amodule->extra_method_table);
1150 find_symbol (sofile, globals, "extra_method_info_offsets", (gpointer *)&amodule->extra_method_info_offsets);
1151 find_symbol (sofile, globals, "got_info_offsets", (gpointer*)&amodule->got_info_offsets);
1152 find_symbol (sofile, globals, "specific_trampolines", (gpointer*)&(amodule->trampolines [MONO_AOT_TRAMP_SPECIFIC]));
1153 find_symbol (sofile, globals, "static_rgctx_trampolines", (gpointer*)&(amodule->trampolines [MONO_AOT_TRAMP_STATIC_RGCTX]));
1154 find_symbol (sofile, globals, "imt_thunks", (gpointer*)&(amodule->trampolines [MONO_AOT_TRAMP_IMT_THUNK]));
1155 find_symbol (sofile, globals, "unwind_info", (gpointer)&amodule->unwind_info);
1156 find_symbol (sofile, globals, "mem_end", (gpointer*)&amodule->mem_end);
1158 amodule->mem_begin = amodule->code;
1160 find_symbol (sofile, globals, "plt", (gpointer*)&amodule->plt);
1161 find_symbol (sofile, globals, "plt_end", (gpointer*)&amodule->plt_end);
1163 if (make_unreadable) {
1164 #ifndef TARGET_WIN32
1166 guint8 *page_start, *page_end;
1169 addr = amodule->mem_begin;
1170 len = amodule->mem_end - amodule->mem_begin;
1172 /* Round down in both directions to avoid modifying data which is not ours */
1173 page_start = (guint8 *) (((gssize) (addr)) & ~ (mono_pagesize () - 1)) + mono_pagesize ();
1174 page_end = (guint8 *) (((gssize) (addr + len)) & ~ (mono_pagesize () - 1));
1175 if (page_end > page_start) {
1176 err = mono_mprotect (page_start, (page_end - page_start), MONO_MMAP_NONE);
1177 g_assert (err == 0);
1184 aot_code_low_addr = MIN (aot_code_low_addr, (gsize)amodule->code);
1185 aot_code_high_addr = MAX (aot_code_high_addr, (gsize)amodule->code_end);
1187 g_hash_table_insert (aot_modules, assembly, amodule);
1190 mono_jit_info_add_aot_module (assembly->image, amodule->code, amodule->code_end);
1192 assembly->image->aot_module = amodule;
1194 #if defined(HAVE_DL_ITERATE_PHDR) && defined(PT_GNU_EH_FRAME)
1195 /* Lookup the address of the .eh_frame_hdr () section if available */
1196 dl_iterate_phdr (dl_callback, amodule);
1199 if (mono_aot_only) {
1200 if (mono_defaults.corlib) {
1201 /* The second got slot contains the mscorlib got addr */
1202 MonoAotModule *mscorlib_amodule = mono_defaults.corlib->aot_module;
1204 amodule->got [1] = mscorlib_amodule->got;
1206 amodule->got [1] = amodule->got;
1211 * Since we store methoddef and classdef tokens when referring to methods/classes in
1212 * referenced assemblies, we depend on the exact versions of the referenced assemblies.
1213 * MS calls this 'hard binding'. This means we have to load all referenced assemblies
1214 * non-lazily, since we can't handle out-of-date errors later.
1215 * The cached class info also depends on the exact assemblies.
1217 for (i = 0; i < amodule->image_table_len; ++i)
1218 load_image (amodule, i, FALSE);
1220 if (amodule->out_of_date) {
1221 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);
1222 if (mono_aot_only) {
1223 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);
1228 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT loaded AOT Module for %s.\n", assembly->image->name);
1232 * mono_aot_register_globals:
1234 * This is called by the ctor function in AOT images compiled with the
1235 * 'no-dlsym' option.
1238 mono_aot_register_globals (gpointer *globals)
1240 g_assert_not_reached ();
1244 * mono_aot_register_module:
1246 * This should be called by embedding code to register AOT modules statically linked
1247 * into the executable. AOT_INFO should be the value of the
1248 * 'mono_aot_module_<ASSEMBLY_NAME>_info' global symbol from the AOT module.
1251 mono_aot_register_module (gpointer *aot_info)
1259 /* Determine the assembly name */
1260 find_symbol (NULL, globals, "mono_aot_assembly_name", (gpointer*)&aname);
1263 /* This could be called before startup */
1267 if (!static_aot_modules)
1268 static_aot_modules = g_hash_table_new (g_str_hash, g_str_equal);
1270 g_hash_table_insert (static_aot_modules, aname, globals);
1277 mono_aot_init (void)
1279 InitializeCriticalSection (&aot_mutex);
1280 aot_modules = g_hash_table_new (NULL, NULL);
1282 mono_install_assembly_load_hook (load_aot_module, NULL);
1284 if (g_getenv ("MONO_LASTAOT"))
1285 mono_last_aot_method = atoi (g_getenv ("MONO_LASTAOT"));
1286 if (g_getenv ("MONO_AOT_CACHE"))
1287 use_aot_cache = TRUE;
1291 decode_cached_class_info (MonoAotModule *module, MonoCachedClassInfo *info, guint8 *buf, guint8 **endbuf)
1295 info->vtable_size = decode_value (buf, &buf);
1296 if (info->vtable_size == -1)
1299 flags = decode_value (buf, &buf);
1300 info->ghcimpl = (flags >> 0) & 0x1;
1301 info->has_finalize = (flags >> 1) & 0x1;
1302 info->has_cctor = (flags >> 2) & 0x1;
1303 info->has_nested_classes = (flags >> 3) & 0x1;
1304 info->blittable = (flags >> 4) & 0x1;
1305 info->has_references = (flags >> 5) & 0x1;
1306 info->has_static_refs = (flags >> 6) & 0x1;
1307 info->no_special_static_fields = (flags >> 7) & 0x1;
1308 info->is_generic_container = (flags >> 8) & 0x1;
1310 if (info->has_cctor) {
1311 MonoImage *cctor_image = decode_method_ref (module, &info->cctor_token, NULL, NULL, buf, &buf);
1315 if (info->has_finalize) {
1316 info->finalize_image = decode_method_ref (module, &info->finalize_token, NULL, NULL, buf, &buf);
1317 if (!info->finalize_image)
1321 info->instance_size = decode_value (buf, &buf);
1322 info->class_size = decode_value (buf, &buf);
1323 info->packing_size = decode_value (buf, &buf);
1324 info->min_align = decode_value (buf, &buf);
1332 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
1335 MonoClass *klass = vtable->klass;
1336 MonoAotModule *aot_module = klass->image->aot_module;
1338 MonoCachedClassInfo class_info;
1342 gboolean no_aot_trampoline;
1344 if (MONO_CLASS_IS_INTERFACE (klass) || klass->rank || !aot_module)
1347 info = &aot_module->blob [mono_aot_get_offset (aot_module->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
1350 err = decode_cached_class_info (aot_module, &class_info, p, &p);
1354 for (i = 0; i < slot; ++i)
1355 decode_method_ref (aot_module, &token, NULL, NULL, p, &p);
1357 image = decode_method_ref (aot_module, &token, NULL, &no_aot_trampoline, p, &p);
1360 if (no_aot_trampoline)
1363 if (mono_metadata_token_index (token) == 0)
1366 return mono_aot_get_method_from_token (domain, image, token);
1370 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
1372 MonoAotModule *aot_module = klass->image->aot_module;
1376 if (klass->rank || !aot_module)
1379 p = (guint8*)&aot_module->blob [mono_aot_get_offset (aot_module->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)];
1381 err = decode_cached_class_info (aot_module, res, p, &p);
1389 * mono_aot_get_class_from_name:
1391 * Obtains a MonoClass with a given namespace and a given name which is located in IMAGE,
1392 * using a cache stored in the AOT file.
1393 * Stores the resulting class in *KLASS if found, stores NULL otherwise.
1395 * Returns: TRUE if the klass was found/not found in the cache, FALSE if no aot file was
1399 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
1401 MonoAotModule *aot_module = image->aot_module;
1402 guint16 *table, *entry;
1405 char full_name_buf [1024];
1407 const char *name2, *name_space2;
1409 guint32 cols [MONO_TYPEDEF_SIZE];
1410 GHashTable *nspace_table;
1412 if (!aot_module || !aot_module->class_name_table)
1419 /* First look in the cache */
1420 if (!aot_module->name_cache)
1421 aot_module->name_cache = g_hash_table_new (g_str_hash, g_str_equal);
1422 nspace_table = g_hash_table_lookup (aot_module->name_cache, name_space);
1424 *klass = g_hash_table_lookup (nspace_table, name);
1431 table_size = aot_module->class_name_table [0];
1432 table = aot_module->class_name_table + 1;
1434 if (name_space [0] == '\0')
1435 full_name = g_strdup_printf ("%s", name);
1437 if (strlen (name_space) + strlen (name) < 1000) {
1438 sprintf (full_name_buf, "%s.%s", name_space, name);
1439 full_name = full_name_buf;
1441 full_name = g_strdup_printf ("%s.%s", name_space, name);
1444 hash = mono_metadata_str_hash (full_name) % table_size;
1445 if (full_name != full_name_buf)
1448 entry = &table [hash * 2];
1450 if (entry [0] != 0) {
1451 t = &image->tables [MONO_TABLE_TYPEDEF];
1454 guint32 index = entry [0];
1455 guint32 next = entry [1];
1456 guint32 token = mono_metadata_make_token (MONO_TABLE_TYPEDEF, index);
1458 name_table_accesses ++;
1460 mono_metadata_decode_row (t, index - 1, cols, MONO_TYPEDEF_SIZE);
1462 name2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
1463 name_space2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
1465 if (!strcmp (name, name2) && !strcmp (name_space, name_space2)) {
1467 *klass = mono_class_get (image, token);
1472 nspace_table = g_hash_table_lookup (aot_module->name_cache, name_space);
1473 if (!nspace_table) {
1474 nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
1475 g_hash_table_insert (aot_module->name_cache, (char*)name_space2, nspace_table);
1477 g_hash_table_insert (nspace_table, (char*)name2, *klass);
1484 entry = &table [next * 2];
1496 #define DW_EH_PE_omit 0xff
1497 #define DW_EH_PE_uleb128 0x01
1498 #define DW_EH_PE_udata2 0x02
1499 #define DW_EH_PE_udata4 0x03
1500 #define DW_EH_PE_udata8 0x04
1501 #define DW_EH_PE_sleb128 0x09
1502 #define DW_EH_PE_sdata2 0x0A
1503 #define DW_EH_PE_sdata4 0x0B
1504 #define DW_EH_PE_sdata8 0x0C
1506 #define DW_EH_PE_absptr 0x00
1507 #define DW_EH_PE_pcrel 0x10
1508 #define DW_EH_PE_datarel 0x30
1509 #define DW_EH_PE_omit 0xff
1514 guint8 eh_frame_ptr_enc;
1515 guint8 fde_count_enc;
1523 * Decode the exception handling information in the .eh_frame section of the AOT
1524 * file belong to CODE, and construct a MonoJitInfo structure from it.
1525 * LOCKING: Acquires the domain lock.
1527 static G_GNUC_UNUSED MonoJitInfo*
1528 decode_eh_frame (MonoAotModule *amodule, MonoDomain *domain,
1529 MonoMethod *method, guint8 *code, MonoJitInfo *orig_jinfo,
1534 guint8 *eh_frame, *unwind_info;
1535 guint32 eh_frame_ptr;
1538 int i, pos, left, right, offset, offset1, offset2;
1539 guint32 unw_len, code_len;
1540 MonoJitExceptionInfo *ei;
1542 gpointer *type_info;
1545 g_assert (amodule->eh_frame_hdr);
1547 // http://refspecs.freestandards.org/LSB_1.3.0/gLSB/gLSB/ehframehdr.html
1548 hdr = (eh_frame_hdr*)amodule->eh_frame_hdr;
1549 g_assert (hdr->version == 1);
1550 g_assert (hdr->eh_frame_ptr_enc == (DW_EH_PE_pcrel | DW_EH_PE_sdata4));
1551 g_assert (hdr->fde_count_enc == DW_EH_PE_udata4);
1552 g_assert (hdr->table_enc == (DW_EH_PE_datarel | DW_EH_PE_sdata4));
1555 eh_frame_ptr = *(guint32*)p;
1557 fde_count = *(guint32*)p;
1561 /* Binary search in the table to find the entry for code */
1562 offset = code - amodule->eh_frame_hdr;
1567 pos = (left + right) / 2;
1569 offset1 = table [(pos * 2)];
1570 if (pos + 1 == fde_count)
1572 offset2 = amodule->code_end - amodule->code;
1574 offset2 = table [(pos + 1) * 2];
1576 if (offset < offset1)
1578 else if (offset >= offset2)
1584 g_assert (code >= amodule->eh_frame_hdr + table [(pos * 2)]);
1585 if (pos < fde_count)
1586 g_assert (code < amodule->eh_frame_hdr + table [(pos * 2) + 2]);
1588 eh_frame = amodule->eh_frame_hdr + table [(pos * 2) + 1];
1590 unwind_info = mono_unwind_decode_fde (eh_frame, &unw_len, &code_len, &ei, &ei_len, &type_info);
1593 * LLVM might represent one IL region with multiple regions, so have to
1594 * allocate a new JI.
1598 mono_domain_alloc0 (domain, MONO_SIZEOF_JIT_INFO + (sizeof (MonoJitExceptionInfo) * ei_len) + extra_size);
1603 jinfo->code_size = code_len;
1604 jinfo->used_regs = mono_cache_unwind_info (unwind_info, unw_len);
1605 jinfo->method = method;
1606 jinfo->code_start = code;
1607 jinfo->domain_neutral = 0;
1608 /* This signals that used_regs points to a normal cached unwind info */
1609 jinfo->from_aot = 0;
1610 jinfo->num_clauses = ei_len;
1612 for (i = 0; i < ei_len; ++i) {
1614 * orig_jinfo contains the original IL exception info saved by the AOT
1615 * compiler, we have to combine that with the information produced by LLVM
1617 /* The type_info entries contain IL clause indexes */
1618 int clause_index = *(gint32*)type_info [i];
1619 MonoJitExceptionInfo *jei = &jinfo->clauses [i];
1620 MonoJitExceptionInfo *orig_jei = &orig_jinfo->clauses [clause_index];
1622 g_assert (clause_index < orig_jinfo->num_clauses);
1623 jei->flags = orig_jei->flags;
1624 jei->data.catch_class = orig_jei->data.catch_class;
1626 jei->try_start = ei [i].try_start;
1627 jei->try_end = ei [i].try_end;
1628 jei->handler_start = ei [i].handler_start;
1636 /* The offsets in the table are 31 bits long, have to extend them to 32 */
1637 #define EXTEND_PREL31(val) ((((gint32)(val)) << 1) >> 1)
1639 static inline guint32
1640 decode_uleb128 (guint8 *buf, guint8 **endbuf)
1650 res = res | (((int)(b & 0x7f)) << shift);
1662 decode_arm_eh_ops (guint8 *unwind_ops, int nops)
1664 int i, vsp_reg, vsp_offset;
1666 gint32 *reg_offsets;
1669 * Have to convert the ARM unwind info into DWARF unwind info.
1670 * The ARM unwind info specifies a simple set of instructions which need to be
1671 * executed during unwinding. It manipulates a virtual stack pointer (vsp). The
1672 * connection with DWARF unwind info is the following: after all ARM unwind
1673 * opcodes have been executed, the stack should be completely unwound, i.e.
1674 * vsp == DWARF CFA. This allows us to construct the DWARF opcodes corresponding
1675 * to the ARM opcodes.
1676 * The ARM unwind info is not instruction precise, i. e. it can't handle
1677 * async exceptions etc.
1679 /* The reg used to compute the initial value of vsp */
1680 vsp_reg = ARMREG_SP;
1681 /* The offset between vsp_reg and the CFA */
1684 /* The register save offsets from the initial value of vsp */
1685 reg_offsets = g_new0 (gint32, 16);
1686 for (i = 0; i < 16; ++i)
1687 reg_offsets [i] = -1;
1689 /* section 9.3 in the ehabi doc */
1690 for (i = 0; i < nops; ++i) {
1691 guint8 op = unwind_ops [i];
1693 if ((op >> 6) == 0) {
1694 /* vsp = vsp + (xxxxxx << 2) + 4. */
1695 vsp_offset += ((op & 0x3f) << 2) + 4;
1696 } else if ((op >> 6) == 1) {
1697 /* vsp = vsp - (xxxxxx << 2) - 4. */
1698 vsp_offset -= ((op & 0x3f) << 2) + 4;
1699 } else if (op == 0xb2) {
1700 /* vsp = vsp = vsp + 0x204 + (uleb128 << 2) */
1701 guint8 *p = unwind_ops + i + 1;
1702 guint32 v = decode_uleb128 (p, &p);
1704 vsp_offset += 0x204 + (v << 2);
1705 i = (p - unwind_ops) - 1;
1706 } else if (op >= 0x80 && op <= 0x8f) {
1712 g_assert (i + 1 < nops);
1713 op2 = unwind_ops [i + 1];
1716 for (j = 0; j < 8; ++j)
1717 if (op2 & (0x1 << j))
1718 regs = g_slist_append (regs, GUINT_TO_POINTER (ARMREG_R4 + j));
1719 for (j = 0; j < 4; ++j)
1720 if (op & (0x1 << j))
1721 regs = g_slist_append (regs, GUINT_TO_POINTER (ARMREG_R12 + j));
1724 for (j = 0; j < g_slist_length (regs); ++j)
1725 reg_offsets [GPOINTER_TO_UINT (g_slist_nth (regs, j)->data)] = vsp_offset + (j * 4);
1727 vsp_offset += g_slist_length (regs) * 4;
1729 g_slist_free (regs);
1732 } else if (op >= 0xa8 && op <= 0xaf) {
1736 /* pop r4-r[4 + nnn], r14 */
1739 for (j = 0; j <= (op & 0x7); ++j)
1740 regs = g_slist_append (regs, GUINT_TO_POINTER (ARMREG_R4 + j));
1741 regs = g_slist_append (regs, GUINT_TO_POINTER (ARMREG_R14));
1743 for (j = 0; j < g_slist_length (regs); ++j)
1744 reg_offsets [GPOINTER_TO_UINT (g_slist_nth (regs, j)->data)] = vsp_offset + (j * 4);
1746 vsp_offset += g_slist_length (regs) * 4;
1748 g_slist_free (regs);
1749 } else if (op == 0xb0) {
1752 } else if (op >= 0x90 && op <= 0x9f && op != 0x9d && op != 0x9f) {
1759 for (j = 0; j < nops; ++j)
1760 printf ("%x ", unwind_ops [j]);
1761 printf (" / %d\n", i);
1762 g_assert_not_reached ();
1768 /* vsp_reg + vsp_offset = CFA */
1769 mono_add_unwind_op_def_cfa (ops, (guint8*)NULL, (guint8*)NULL, vsp_reg, vsp_offset);
1771 for (i = 0; i < 16; ++i) {
1772 if (reg_offsets [i] != -1)
1773 /* The reg is saved at vsp_reg + reg_offset [i] == CFA - (vsp_offset - reg_offset [i]) */
1774 mono_add_unwind_op_offset (ops, (guint8*)NULL, (guint8*)NULL, i, - (vsp_offset - reg_offsets [i]));
1783 * Decode the exception handling information in the .ARM.exidx section of the AOT
1784 * file belong to CODE, and construct a MonoJitInfo structure from it.
1785 * LOCKING: Acquires the domain lock.
1788 decode_arm_exidx (MonoAotModule *amodule, MonoDomain *domain,
1789 MonoMethod *method, guint8 *code, guint32 code_len, MonoJitInfo *jinfo)
1792 guint8 *base, *code1, *code2;
1793 int i, pos, left, right, offset, offset1, offset2, count, nwords, nops;
1795 guint8 unwind_ops [64];
1797 guint8 *unwind_info;
1800 g_assert (amodule->arm_exidx);
1802 table = (guint32*)amodule->arm_exidx;
1805 * The table format is described in:
1806 * infocenter.arm.com/help/topic/com.arm.doc.../IHI0038A_ehabi.pdf
1809 base = amodule->arm_exidx;
1810 count = amodule->arm_exidx_size / 8;
1812 /* Binary search in the table to find the entry for code */
1813 offset = code - base;
1818 pos = (left + right) / 2;
1823 offset1 = EXTEND_PREL31 (table [(pos * 2)]);
1824 code1 = (guint8*)&(table [pos * 2]) + offset1;
1825 if (pos + 1 == count)
1827 offset2 = amodule->code_end - amodule->code;
1829 offset2 = EXTEND_PREL31 (table [(pos + 1) * 2]);
1830 code2 = (guint8*)&(table [(pos + 1) * 2]) + offset2;
1834 else if (code >= code2)
1840 if (code >= code1) {
1842 * The linker might merge duplicate unwind table entries, so
1843 * offset1 and offset2 might point to another method, but this is not a problem.
1845 code1 = (guint8*)&(table [pos * 2]) + offset1;
1846 code2 = (guint8*)&(table [(pos + 1) * 2]) + offset2;
1848 g_assert (code >= code1);
1850 g_assert (code < code2);
1852 entry = table [(pos * 2) + 1];
1854 /* inline entry, compact model, personality routine 0 */
1855 if ((entry & 0xff000000) == 0x80000000) {
1857 unwind_ops [0] = (entry & 0x00ff0000) >> 16;
1858 unwind_ops [1] = (entry & 0x0000ff00) >> 8;
1859 unwind_ops [2] = (entry & 0x000000ff) >> 0;
1861 ops = decode_arm_eh_ops (unwind_ops, nops);
1862 } else if ((entry & 0x80000000) == 0) {
1863 /* non-inline entry */
1864 guint8 *data = (guint8*)&table [(pos * 2) + 1] + EXTEND_PREL31 (entry);
1866 entry = ((guint32*)data) [0];
1868 /* compact model, personality routine 1 */
1869 g_assert ((entry & 0xff000000) == 0x81000000);
1871 nwords = (entry & 0x00ff0000) >> 16;
1872 nops = nwords * 4 + 2;
1873 g_assert (nops < 64);
1875 unwind_ops [0] = (entry & 0x0000ff00) >> 8;
1876 unwind_ops [1] = (entry & 0x000000ff) >> 0;
1878 for (i = 0; i < nwords; ++i) {
1879 entry = ((guint32*)data) [1 + i];
1880 unwind_ops [(i * 4) + 2] = (entry & 0xff000000) >> 24;
1881 unwind_ops [(i * 4) + 2 + 1] = (entry & 0x00ff0000) >> 16;
1882 unwind_ops [(i * 4) + 2 + 2] = (entry & 0x0000ff00) >> 8;
1883 unwind_ops [(i * 4) + 2 + 3] = (entry & 0x000000ff) >> 0;
1886 ops = decode_arm_eh_ops (unwind_ops, nops);
1891 unwind_info = mono_unwind_ops_encode (ops, &unw_len);
1893 /* The method has no unwind info */
1898 jinfo->code_size = code_len;
1899 jinfo->used_regs = mono_cache_unwind_info (unwind_info, unw_len);
1900 jinfo->method = method;
1901 jinfo->code_start = code;
1902 jinfo->domain_neutral = 0;
1903 /* This signals that used_regs points to a normal cached unwind info */
1904 jinfo->from_aot = 0;
1909 * LOCKING: Acquires the domain lock.
1912 decode_exception_debug_info (MonoAotModule *amodule, MonoDomain *domain,
1913 MonoMethod *method, guint8* ex_info, guint8 *addr,
1914 guint8 *code, guint32 code_len)
1918 guint used_int_regs, flags;
1919 gboolean has_generic_jit_info, has_dwarf_unwind_info, has_clauses, has_seq_points, has_try_block_holes;
1922 int generic_info_size, try_holes_info_size, num_holes;
1924 /* Load the method info from the AOT file */
1927 flags = decode_value (p, &p);
1928 has_generic_jit_info = (flags & 1) != 0;
1929 has_dwarf_unwind_info = (flags & 2) != 0;
1930 has_clauses = (flags & 4) != 0;
1931 has_seq_points = (flags & 8) != 0;
1932 from_llvm = (flags & 16) != 0;
1933 has_try_block_holes = (flags & 32) != 0;
1935 if (has_dwarf_unwind_info) {
1938 offset = decode_value (p, &p);
1939 g_assert (offset < (1 << 30));
1940 used_int_regs = offset;
1942 used_int_regs = decode_value (p, &p);
1944 if (has_generic_jit_info)
1945 generic_info_size = sizeof (MonoGenericJitInfo);
1947 generic_info_size = 0;
1949 if (has_try_block_holes) {
1950 num_holes = decode_value (p, &p);
1951 try_holes_info_size = sizeof (MonoTryBlockHoleTableJitInfo) + num_holes * sizeof (MonoTryBlockHoleJitInfo);
1953 num_holes = try_holes_info_size = 0;
1955 /* Exception table */
1957 int num_clauses = decode_value (p, &p);
1960 mono_domain_alloc0 (domain, MONO_SIZEOF_JIT_INFO + (sizeof (MonoJitExceptionInfo) * num_clauses) + generic_info_size + try_holes_info_size);
1961 jinfo->num_clauses = num_clauses;
1963 for (i = 0; i < num_clauses; ++i) {
1964 MonoJitExceptionInfo *ei = &jinfo->clauses [i];
1966 ei->flags = decode_value (p, &p);
1969 if (decode_value (p, &p))
1970 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
1972 /* The rest of the info is in the DWARF EH section */
1976 ei->exvar_offset = decode_value (p, &p);
1978 if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER || ei->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
1979 ei->data.filter = code + decode_value (p, &p);
1981 if (decode_value (p, &p))
1982 ei->data.catch_class = decode_klass_ref (amodule, p, &p);
1985 ei->try_start = code + decode_value (p, &p);
1986 ei->try_end = code + decode_value (p, &p);
1987 ei->handler_start = code + decode_value (p, &p);
1991 jinfo = mono_domain_alloc0 (domain, MONO_SIZEOF_JIT_INFO + generic_info_size + try_holes_info_size);
1995 /* LLVM compiled method */
1996 /* The info is in the .eh_frame section */
1998 decode_arm_exidx (amodule, domain, method, code, code_len, jinfo);
2000 jinfo = decode_eh_frame (amodule, domain, method, code, jinfo, generic_info_size);
2002 jinfo->from_llvm = 1;
2004 jinfo->code_size = code_len;
2005 jinfo->used_regs = used_int_regs;
2006 jinfo->method = method;
2007 jinfo->code_start = code;
2008 jinfo->domain_neutral = 0;
2009 jinfo->from_aot = 1;
2012 if (has_generic_jit_info) {
2013 MonoGenericJitInfo *gi;
2015 jinfo->has_generic_jit_info = 1;
2017 gi = mono_jit_info_get_generic_jit_info (jinfo);
2020 gi->has_this = decode_value (p, &p);
2021 gi->this_reg = decode_value (p, &p);
2022 gi->this_offset = decode_value (p, &p);
2024 /* This currently contains no data */
2025 gi->generic_sharing_context = g_new0 (MonoGenericSharingContext, 1);
2027 jinfo->method = decode_resolve_method_ref (amodule, p, &p);
2030 if (has_try_block_holes) {
2031 MonoTryBlockHoleTableJitInfo *table;
2033 jinfo->has_try_block_holes = 1;
2035 table = mono_jit_info_get_try_block_hole_table_info (jinfo);
2038 table->num_holes = (guint16)num_holes;
2039 for (i = 0; i < num_holes; ++i) {
2040 MonoTryBlockHoleJitInfo *hole = &table->holes [i];
2041 hole->clause = decode_value (p, &p);
2042 hole->length = decode_value (p, &p);
2043 hole->offset = decode_value (p, &p);
2047 if (has_seq_points) {
2048 MonoSeqPointInfo *seq_points;
2049 int il_offset, native_offset, last_il_offset, last_native_offset, j;
2051 int len = decode_value (p, &p);
2053 seq_points = g_malloc0 (sizeof (MonoSeqPointInfo) + (len - MONO_ZERO_LEN_ARRAY) * sizeof (SeqPoint));
2054 seq_points->len = len;
2055 last_il_offset = last_native_offset = 0;
2056 for (i = 0; i < len; ++i) {
2057 SeqPoint *sp = &seq_points->seq_points [i];
2058 il_offset = last_il_offset + decode_value (p, &p);
2059 native_offset = last_native_offset + decode_value (p, &p);
2061 sp->il_offset = il_offset;
2062 sp->native_offset = native_offset;
2064 sp->next_len = decode_value (p, &p);
2065 sp->next = g_new (int, sp->next_len);
2066 for (j = 0; j < sp->next_len; ++j)
2067 sp->next [j] = decode_value (p, &p);
2069 last_il_offset = il_offset;
2070 last_native_offset = native_offset;
2073 mono_domain_lock (domain);
2074 g_hash_table_insert (domain_jit_info (domain)->seq_points, method, seq_points);
2075 mono_domain_unlock (domain);
2078 /* Load debug info */
2079 buf_len = decode_value (p, &p);
2080 mono_debug_add_aot_method (domain, method, code, p, buf_len);
2082 if (amodule != jinfo->method->klass->image->aot_module) {
2085 ji_to_amodule = g_hash_table_new (NULL, NULL);
2086 g_hash_table_insert (ji_to_amodule, jinfo, amodule);
2094 * mono_aot_get_unwind_info:
2096 * Return a pointer to the DWARF unwind info belonging to JI.
2099 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
2101 MonoAotModule *amodule = ji->method->klass->image->aot_module;
2103 guint8 *code = ji->code_start;
2106 g_assert (ji->from_aot);
2108 if (!(code >= amodule->code && code <= amodule->code_end)) {
2109 /* ji belongs to a different aot module than amodule */
2111 g_assert (ji_to_amodule);
2112 amodule = g_hash_table_lookup (ji_to_amodule, ji);
2114 g_assert (code >= amodule->code && code <= amodule->code_end);
2118 p = amodule->unwind_info + ji->used_regs;
2119 *unwind_info_len = decode_value (p, &p);
2123 static G_GNUC_UNUSED int
2124 compare_ints (const void *a, const void *b)
2126 return *(gint32*)a - *(gint32*)b;
2130 msort_code_offsets_internal (gint32 *array, int lo, int hi, gint32 *scratch)
2132 int mid = (lo + hi) / 2;
2139 for (i = lo; i < hi; ++i)
2140 if (array [(i * 2)] > array [(i * 2) + 2])
2143 /* Already sorted */
2147 msort_code_offsets_internal (array, lo, mid, scratch);
2148 msort_code_offsets_internal (array, mid + 1, hi, scratch);
2150 if (array [mid * 2] < array [(mid + 1) * 2])
2156 for (i = lo; i <= hi; i ++) {
2157 if (t_lo <= mid && ((t_hi > hi) || array [t_lo * 2] < array [t_hi * 2])) {
2158 scratch [(i * 2)] = array [t_lo * 2];
2159 scratch [(i * 2) + 1] = array [(t_lo *2) + 1];
2162 scratch [(i * 2)] = array [t_hi * 2];
2163 scratch [(i * 2) + 1] = array [(t_hi *2) + 1];
2167 for (i = lo; i <= hi; ++i) {
2168 array [(i * 2)] = scratch [i * 2];
2169 array [(i * 2) + 1] = scratch [(i * 2) + 1];
2174 msort_code_offsets (gint32 *array, int len)
2178 scratch = g_new (gint32, len * 2);
2179 msort_code_offsets_internal (array, 0, len - 1, scratch);
2184 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
2186 int pos, left, right, offset, offset1, offset2, code_len;
2187 int method_index, table_len, is_wrapper;
2189 MonoAotModule *amodule = image->aot_module;
2192 guint8 *code, *ex_info, *p;
2194 int nmethods = amodule->info.nmethods;
2195 gint32 *code_offsets;
2201 if (domain != mono_get_root_domain ())
2205 offset = (guint8*)addr - amodule->code;
2207 /* Compute a sorted table mapping code offsets to method indexes. */
2208 if (!amodule->sorted_code_offsets) {
2210 code_offsets = g_new0 (gint32, nmethods * 2);
2212 for (i = 0; i < nmethods; ++i) {
2213 /* Skip the -1 entries to speed up sorting */
2214 if (amodule->code_offsets [i] == 0xffffffff)
2216 code_offsets [(offsets_len * 2)] = amodule->code_offsets [i];
2217 code_offsets [(offsets_len *2) + 1] = i;
2220 /* Use a merge sort as this is mostly sorted */
2221 msort_code_offsets (code_offsets, offsets_len);
2222 //qsort (code_offsets, offsets_len, sizeof (gint32) * 2, compare_ints);
2223 for (i = 0; i < offsets_len -1; ++i)
2224 g_assert (code_offsets [(i * 2)] <= code_offsets [(i + 1) * 2]);
2226 if (InterlockedCompareExchangePointer ((gpointer*)&amodule->sorted_code_offsets, code_offsets, NULL) != NULL)
2227 /* Somebody got in before us */
2228 g_free (code_offsets);
2229 amodule->sorted_code_offsets_len = offsets_len;
2232 code_offsets = amodule->sorted_code_offsets;
2233 offsets_len = amodule->sorted_code_offsets_len;
2235 /* Binary search in the sorted_code_offsets table */
2237 right = offsets_len;
2239 pos = (left + right) / 2;
2241 offset1 = code_offsets [(pos * 2)];
2242 if (pos + 1 == offsets_len)
2243 offset2 = amodule->code_end - amodule->code;
2245 offset2 = code_offsets [(pos + 1) * 2];
2247 if (offset < offset1)
2249 else if (offset >= offset2)
2255 g_assert (offset >= code_offsets [(pos * 2)]);
2256 if (pos + 1 < offsets_len)
2257 g_assert (offset < code_offsets [((pos + 1) * 2)]);
2258 method_index = code_offsets [(pos * 2) + 1];
2260 code = &amodule->code [amodule->code_offsets [method_index]];
2261 ex_info = &amodule->blob [mono_aot_get_offset (amodule->ex_info_offsets, method_index)];
2263 if (pos == offsets_len - 1)
2264 code_len = amodule->code_end - code;
2266 code_len = code_offsets [(pos + 1) * 2] - code_offsets [pos * 2];
2268 g_assert ((guint8*)code <= (guint8*)addr && (guint8*)addr < (guint8*)code + code_len);
2270 /* Might be a wrapper/extra method */
2271 if (amodule->extra_methods) {
2273 method = g_hash_table_lookup (amodule->extra_methods, GUINT_TO_POINTER (method_index));
2280 if (method_index >= image->tables [MONO_TABLE_METHOD].rows) {
2282 * This is hit for extra methods which are called directly, so they are
2283 * not in amodule->extra_methods.
2285 table_len = amodule->extra_method_info_offsets [0];
2286 table = amodule->extra_method_info_offsets + 1;
2293 pos = ((left + right) / 2);
2295 g_assert (pos < table_len);
2297 if (table [pos * 2] < method_index)
2299 else if (table [pos * 2] > method_index)
2305 p = amodule->blob + table [(pos * 2) + 1];
2306 is_wrapper = decode_value (p, &p);
2307 g_assert (!is_wrapper);
2308 method = decode_resolve_method_ref (amodule, p, &p);
2311 token = mono_metadata_make_token (MONO_TABLE_METHOD, method_index + 1);
2312 method = mono_get_method (image, token, NULL);
2319 //printf ("F: %s\n", mono_method_full_name (method, TRUE));
2321 jinfo = decode_exception_debug_info (amodule, domain, method, ex_info, addr, code, code_len);
2323 g_assert ((guint8*)addr >= (guint8*)jinfo->code_start);
2324 g_assert ((guint8*)addr < (guint8*)jinfo->code_start + jinfo->code_size);
2326 /* Add it to the normal JitInfo tables */
2327 mono_jit_info_table_add (domain, jinfo);
2333 decode_patch (MonoAotModule *aot_module, MonoMemPool *mp, MonoJumpInfo *ji, guint8 *buf, guint8 **endbuf)
2341 case MONO_PATCH_INFO_METHOD:
2342 case MONO_PATCH_INFO_METHOD_JUMP:
2343 case MONO_PATCH_INFO_ICALL_ADDR:
2344 case MONO_PATCH_INFO_METHOD_RGCTX: {
2347 gboolean no_aot_trampoline;
2349 image = decode_method_ref (aot_module, &token, &method, &no_aot_trampoline, p, &p);
2353 if (!method && !mono_aot_only && !no_aot_trampoline && (ji->type == MONO_PATCH_INFO_METHOD) && (mono_metadata_token_table (token) == MONO_TABLE_METHOD)) {
2354 ji->data.target = mono_create_ftnptr (mono_domain_get (), mono_create_jit_trampoline_from_token (image, token));
2355 ji->type = MONO_PATCH_INFO_ABS;
2359 ji->data.method = method;
2361 ji->data.method = mono_get_method (image, token, NULL);
2362 g_assert (ji->data.method);
2363 mono_class_init (ji->data.method->klass);
2367 case MONO_PATCH_INFO_INTERNAL_METHOD:
2368 case MONO_PATCH_INFO_JIT_ICALL_ADDR: {
2369 guint32 len = decode_value (p, &p);
2371 ji->data.name = (char*)p;
2375 case MONO_PATCH_INFO_METHODCONST:
2377 ji->data.method = decode_resolve_method_ref (aot_module, p, &p);
2378 if (!ji->data.method)
2381 case MONO_PATCH_INFO_VTABLE:
2382 case MONO_PATCH_INFO_CLASS:
2383 case MONO_PATCH_INFO_IID:
2384 case MONO_PATCH_INFO_ADJUSTED_IID:
2386 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2387 if (!ji->data.klass)
2390 case MONO_PATCH_INFO_CLASS_INIT:
2391 case MONO_PATCH_INFO_DELEGATE_TRAMPOLINE:
2392 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2393 if (!ji->data.klass)
2396 case MONO_PATCH_INFO_IMAGE:
2397 ji->data.image = load_image (aot_module, decode_value (p, &p), TRUE);
2398 if (!ji->data.image)
2401 case MONO_PATCH_INFO_FIELD:
2402 case MONO_PATCH_INFO_SFLDA:
2404 ji->data.field = decode_field_info (aot_module, p, &p);
2405 if (!ji->data.field)
2408 case MONO_PATCH_INFO_SWITCH:
2409 ji->data.table = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoBBTable));
2410 ji->data.table->table_size = decode_value (p, &p);
2411 table = mono_domain_alloc (mono_domain_get (), sizeof (gpointer) * ji->data.table->table_size);
2412 ji->data.table->table = (MonoBasicBlock**)table;
2413 for (i = 0; i < ji->data.table->table_size; i++)
2414 table [i] = (gpointer)(gssize)decode_value (p, &p);
2416 case MONO_PATCH_INFO_R4: {
2419 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (float));
2420 val = decode_value (p, &p);
2421 *(float*)ji->data.target = *(float*)&val;
2424 case MONO_PATCH_INFO_R8: {
2428 ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (double));
2430 val [0] = decode_value (p, &p);
2431 val [1] = decode_value (p, &p);
2432 v = ((guint64)val [1] << 32) | ((guint64)val [0]);
2433 *(double*)ji->data.target = *(double*)&v;
2436 case MONO_PATCH_INFO_LDSTR:
2437 image = load_image (aot_module, decode_value (p, &p), TRUE);
2440 ji->data.token = mono_jump_info_token_new (mp, image, MONO_TOKEN_STRING + decode_value (p, &p));
2442 case MONO_PATCH_INFO_RVA:
2443 case MONO_PATCH_INFO_DECLSEC:
2444 case MONO_PATCH_INFO_LDTOKEN:
2445 case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
2447 image = load_image (aot_module, decode_value (p, &p), TRUE);
2450 ji->data.token = mono_jump_info_token_new (mp, image, decode_value (p, &p));
2452 ji->data.token->has_context = decode_value (p, &p);
2453 if (ji->data.token->has_context) {
2454 gboolean res = decode_generic_context (aot_module, &ji->data.token->context, p, &p);
2459 case MONO_PATCH_INFO_EXC_NAME:
2460 ji->data.klass = decode_klass_ref (aot_module, p, &p);
2461 if (!ji->data.klass)
2463 ji->data.name = ji->data.klass->name;
2465 case MONO_PATCH_INFO_METHOD_REL:
2466 ji->data.offset = decode_value (p, &p);
2468 case MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG:
2469 case MONO_PATCH_INFO_GENERIC_CLASS_INIT:
2470 case MONO_PATCH_INFO_MONITOR_ENTER:
2471 case MONO_PATCH_INFO_MONITOR_EXIT:
2473 case MONO_PATCH_INFO_RGCTX_FETCH: {
2475 MonoJumpInfoRgctxEntry *entry;
2477 entry = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
2478 entry->method = decode_resolve_method_ref (aot_module, p, &p);
2479 entry->in_mrgctx = decode_value (p, &p);
2480 entry->info_type = decode_value (p, &p);
2481 entry->data = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
2482 entry->data->type = decode_value (p, &p);
2484 res = decode_patch (aot_module, mp, entry->data, p, &p);
2487 ji->data.rgctx_entry = entry;
2490 case MONO_PATCH_INFO_SEQ_POINT_INFO:
2492 case MONO_PATCH_INFO_LLVM_IMT_TRAMPOLINE: {
2493 MonoJumpInfoImtTramp *imt_tramp = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoImtTramp));
2495 imt_tramp->method = decode_resolve_method_ref (aot_module, p, &p);
2496 imt_tramp->vt_offset = decode_value (p, &p);
2498 ji->data.imt_tramp = imt_tramp;
2502 g_warning ("unhandled type %d", ji->type);
2503 g_assert_not_reached ();
2514 static MonoJumpInfo*
2515 load_patch_info (MonoAotModule *aot_module, MonoMemPool *mp, int n_patches,
2516 guint32 **got_slots,
2517 guint8 *buf, guint8 **endbuf)
2519 MonoJumpInfo *patches;
2525 patches = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo) * n_patches);
2527 *got_slots = g_malloc (sizeof (guint32) * n_patches);
2529 for (pindex = 0; pindex < n_patches; ++pindex) {
2530 MonoJumpInfo *ji = &patches [pindex];
2535 got_offset = decode_value (p, &p);
2537 if (aot_module->got [got_offset]) {
2538 /* Already loaded */
2539 //printf ("HIT!\n");
2541 shared_p = aot_module->blob + mono_aot_get_offset (aot_module->got_info_offsets, got_offset);
2543 ji->type = decode_value (shared_p, &shared_p);
2545 res = decode_patch (aot_module, mp, ji, shared_p, &shared_p);
2550 (*got_slots) [pindex] = got_offset;
2557 g_free (*got_slots);
2564 register_jump_target_got_slot (MonoDomain *domain, MonoMethod *method, gpointer *got_slot)
2567 * Jump addresses cannot be patched by the trampoline code since it
2568 * does not have access to the caller's address. Instead, we collect
2569 * the addresses of the GOT slots pointing to a method, and patch
2570 * them after the method has been compiled.
2572 MonoJitDomainInfo *info = domain_jit_info (domain);
2575 mono_domain_lock (domain);
2576 if (!info->jump_target_got_slot_hash)
2577 info->jump_target_got_slot_hash = g_hash_table_new (NULL, NULL);
2578 list = g_hash_table_lookup (info->jump_target_got_slot_hash, method);
2579 list = g_slist_prepend (list, got_slot);
2580 g_hash_table_insert (info->jump_target_got_slot_hash, method, list);
2581 mono_domain_unlock (domain);
2587 * Load the method identified by METHOD_INDEX from the AOT image. Return a
2588 * pointer to the native code of the method, or NULL if not found.
2589 * METHOD might not be set if the caller only has the image/token info.
2592 load_method (MonoDomain *domain, MonoAotModule *amodule, MonoImage *image, MonoMethod *method, guint32 token, int method_index)
2595 gboolean from_plt = method == NULL;
2597 int i, pindex, n_patches, used_strings;
2598 gboolean keep_patches = TRUE;
2600 MonoJitInfo *jinfo = NULL;
2601 guint8 *code, *info;
2603 if (mono_profiler_get_events () & MONO_PROFILE_ENTER_LEAVE)
2606 if ((domain != mono_get_root_domain ()) && (!(amodule->info.opts & MONO_OPT_SHARED)))
2607 /* Non shared AOT code can't be used in other appdomains */
2610 if (amodule->out_of_date)
2613 if (amodule->code_offsets [method_index] == 0xffffffff) {
2614 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
2618 method = mono_get_method (image, token, NULL);
2619 full_name = mono_method_full_name (method, TRUE);
2620 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.\n", full_name);
2626 code = &amodule->code [amodule->code_offsets [method_index]];
2628 info = &amodule->blob [mono_aot_get_offset (amodule->method_info_offsets, method_index)];
2631 if (!amodule->methods_loaded)
2632 amodule->methods_loaded = g_new0 (guint32, amodule->info.nmethods + 1);
2635 if ((amodule->methods_loaded [method_index / 32] >> (method_index % 32)) & 0x1)
2638 if (mono_last_aot_method != -1) {
2639 if (mono_jit_stats.methods_aot >= mono_last_aot_method)
2641 else if (mono_jit_stats.methods_aot == mono_last_aot_method - 1) {
2643 method = mono_get_method (image, token, NULL);
2645 char *name = mono_method_full_name (method, TRUE);
2646 printf ("LAST AOT METHOD: %s.\n", name);
2649 printf ("LAST AOT METHOD: %p %d\n", code, method_index);
2657 klass = method->klass;
2658 decode_klass_ref (amodule, p, &p);
2660 klass = decode_klass_ref (amodule, p, &p);
2663 if (amodule->info.opts & MONO_OPT_SHARED)
2664 used_strings = decode_value (p, &p);
2668 for (i = 0; i < used_strings; i++) {
2669 guint token = decode_value (p, &p);
2670 mono_ldstr (mono_get_root_domain (), image, mono_metadata_token_index (token));
2673 if (amodule->info.opts & MONO_OPT_SHARED)
2674 keep_patches = FALSE;
2676 n_patches = decode_value (p, &p);
2678 keep_patches = FALSE;
2681 MonoJumpInfo *patches;
2687 mp = mono_mempool_new ();
2689 patches = load_patch_info (amodule, mp, n_patches, &got_slots, p, &p);
2690 if (patches == NULL)
2693 for (pindex = 0; pindex < n_patches; ++pindex) {
2694 MonoJumpInfo *ji = &patches [pindex];
2696 if (!amodule->got [got_slots [pindex]]) {
2697 amodule->got [got_slots [pindex]] = mono_resolve_patch_target (method, domain, code, ji, TRUE);
2698 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
2699 amodule->got [got_slots [pindex]] = mono_create_ftnptr (domain, amodule->got [got_slots [pindex]]);
2700 if (ji->type == MONO_PATCH_INFO_METHOD_JUMP)
2701 register_jump_target_got_slot (domain, ji->data.method, &(amodule->got [got_slots [pindex]]));
2703 ji->type = MONO_PATCH_INFO_NONE;
2709 mono_mempool_destroy (mp);
2712 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
2716 method = mono_get_method (image, token, NULL);
2718 full_name = mono_method_full_name (method, TRUE);
2721 jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code);
2723 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);
2729 mono_jit_stats.methods_aot++;
2731 amodule->methods_loaded [method_index / 32] |= 1 << (method_index % 32);
2735 if (method && method->wrapper_type)
2736 g_hash_table_insert (amodule->method_to_code, method, code);
2740 if (mono_profiler_get_events () & MONO_PROFILE_JIT_COMPILATION) {
2744 method = mono_get_method (image, token, NULL);
2747 mono_profiler_method_jit (method);
2748 jinfo = mono_jit_info_table_find (domain, (char*)code);
2750 mono_profiler_method_end_jit (method, jinfo, MONO_PROFILE_OK);
2753 if (from_plt && klass && !klass->generic_container)
2754 mono_runtime_class_init (mono_class_vtable (domain, klass));
2759 /* FIXME: The space in domain->mp is wasted */
2760 if (amodule->info.opts & MONO_OPT_SHARED)
2761 /* No need to cache patches */
2762 mono_mempool_destroy (mp);
2771 find_extra_method_in_amodule (MonoAotModule *amodule, MonoMethod *method, const char *name)
2773 guint32 table_size, entry_size, hash;
2774 guint32 *table, *entry;
2776 static guint32 n_extra_decodes;
2781 table_size = amodule->extra_method_table [0];
2782 table = amodule->extra_method_table + 1;
2785 hash = mono_aot_method_hash (method) % table_size;
2787 entry = &table [hash * entry_size];
2794 guint32 key = entry [0];
2795 guint32 value = entry [1];
2796 guint32 next = entry [entry_size - 1];
2799 int is_wrapper_name;
2801 p = amodule->blob + key;
2802 is_wrapper_name = decode_value (p, &p);
2803 if (is_wrapper_name) {
2804 int wrapper_type = decode_value (p, &p);
2805 if (wrapper_type == method->wrapper_type && !strcmp (name, (char*)p)) {
2809 } else if (can_method_ref_match_method (amodule, p, method)) {
2811 if (!amodule->method_ref_to_method)
2812 amodule->method_ref_to_method = g_hash_table_new (NULL, NULL);
2813 m = g_hash_table_lookup (amodule->method_ref_to_method, p);
2817 m = decode_resolve_method_ref (amodule, p, &p);
2820 g_hash_table_insert (amodule->method_ref_to_method, orig_p, m);
2829 /* Special case: wrappers of shared generic methods */
2830 if (m && method->wrapper_type && m->wrapper_type == m->wrapper_type &&
2831 method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
2832 MonoMethod *w1 = mono_marshal_method_from_wrapper (method);
2833 MonoMethod *w2 = mono_marshal_method_from_wrapper (m);
2835 if (w1->is_inflated && ((MonoMethodInflated *)w1)->declaring == w2) {
2841 /* Methods decoded needlessly */
2844 printf ("%d %s %s\n", n_extra_decodes, mono_method_full_name (method, TRUE), mono_method_full_name (m, TRUE));
2850 entry = &table [next * entry_size];
2859 add_module_cb (gpointer key, gpointer value, gpointer user_data)
2861 g_ptr_array_add ((GPtrArray*)user_data, value);
2865 * find_extra_method:
2867 * Try finding METHOD in the extra_method table in all AOT images.
2868 * Return its method index, or 0xffffff if not found. Set OUT_AMODULE to the AOT
2869 * module where the method was found.
2872 find_extra_method (MonoMethod *method, MonoAotModule **out_amodule)
2879 if (method->wrapper_type)
2880 name = mono_aot_wrapper_name (method);
2882 /* Try the method's module first */
2883 *out_amodule = method->klass->image->aot_module;
2884 index = find_extra_method_in_amodule (method->klass->image->aot_module, method, name);
2885 if (index != 0xffffff) {
2891 * Try all other modules.
2892 * This is needed because generic instances klass->image points to the image
2893 * containing the generic definition, but the native code is generated to the
2894 * AOT image which contains the reference.
2897 /* Make a copy to avoid doing the search inside the aot lock */
2898 modules = g_ptr_array_new ();
2900 g_hash_table_foreach (aot_modules, add_module_cb, modules);
2904 for (i = 0; i < modules->len; ++i) {
2905 MonoAotModule *amodule = g_ptr_array_index (modules, i);
2907 if (amodule != method->klass->image->aot_module)
2908 index = find_extra_method_in_amodule (amodule, method, name);
2909 if (index != 0xffffff) {
2910 *out_amodule = amodule;
2915 g_ptr_array_free (modules, TRUE);
2922 * mono_aot_get_method:
2924 * Return a pointer to the AOTed native code for METHOD if it can be found,
2926 * On platforms with function pointers, this doesn't return a function pointer.
2929 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
2931 MonoClass *klass = method->klass;
2932 guint32 method_index;
2933 MonoAotModule *amodule = klass->image->aot_module;
2939 if (amodule->out_of_date)
2942 if ((method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
2943 (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
2944 (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
2945 (method->flags & METHOD_ATTRIBUTE_ABSTRACT))
2949 * Use the original method instead of its invoke-with-check wrapper.
2950 * This is not a problem when using full-aot, since it doesn't support
2953 if (mono_aot_only && method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)
2954 return mono_aot_get_method (domain, mono_marshal_method_from_wrapper (method));
2956 g_assert (klass->inited);
2958 /* Find method index */
2959 if (method->is_inflated && mono_method_is_generic_sharable_impl_full (method, FALSE, FALSE)) {
2961 * For generic methods, we store the fully shared instance in place of the
2964 method = mono_method_get_declaring_generic_method (method);
2965 method_index = mono_metadata_token_index (method->token) - 1;
2966 } else if (method->is_inflated || !method->token) {
2967 /* This hash table is used to avoid the slower search in the extra_method_table in the AOT image */
2969 code = g_hash_table_lookup (amodule->method_to_code, method);
2974 method_index = find_extra_method (method, &amodule);
2976 * Special case the ICollection<T> wrappers for arrays, as they cannot
2977 * be statically enumerated, and each wrapper ends up calling the same
2980 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED && method->klass->rank && strstr (method->name, "System.Collections.Generic")) {
2981 MonoMethod *m = mono_aot_get_array_helper_from_wrapper (method);
2983 code = mono_aot_get_method (domain, m);
2985 if (mono_method_needs_static_rgctx_invoke (m, FALSE)) {
2986 code = mono_create_static_rgctx_trampoline (m, mono_create_ftnptr (domain, code));
2987 /* The call above returns an ftnptr */
2988 code = mono_get_addr_from_ftnptr (code);
2996 * Special case Array.GetGenericValueImpl which is a generic icall.
2997 * Generic sharing currently can't handle it, but the icall returns data using
2998 * an out parameter, so the managed-to-native wrappers can share the same code.
3000 if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass == mono_defaults.array_class && !strcmp (method->name, "GetGenericValueImpl")) {
3002 MonoGenericContext ctx;
3003 MonoType *args [16];
3005 if (mono_method_signature (method)->params [1]->type == MONO_TYPE_OBJECT)
3006 /* Avoid recursion */
3009 m = mono_class_get_method_from_name (mono_defaults.array_class, "GetGenericValueImpl", 2);
3012 memset (&ctx, 0, sizeof (ctx));
3013 args [0] = &mono_defaults.object_class->byval_arg;
3014 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
3016 m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method (m, &ctx), TRUE, TRUE);
3019 * Get the code for the <object> instantiation which should be emitted into
3020 * the mscorlib aot image by the AOT compiler.
3022 code = mono_aot_get_method (domain, m);
3027 if (method_index == 0xffffff && method->is_inflated && mono_method_is_generic_sharable_impl_full (method, FALSE, TRUE)) {
3028 /* Partial sharing */
3029 method_index = find_extra_method (mini_get_shared_method (method), &amodule);
3032 if (method_index == 0xffffff) {
3033 if (mono_aot_only && mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) {
3036 full_name = mono_method_full_name (method, TRUE);
3037 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.\n", full_name);
3043 if (method_index == 0xffffff)
3046 /* Needed by find_jit_info */
3048 if (!amodule->extra_methods)
3049 amodule->extra_methods = g_hash_table_new (NULL, NULL);
3050 g_hash_table_insert (amodule->extra_methods, GUINT_TO_POINTER (method_index), method);
3054 method_index = mono_metadata_token_index (method->token) - 1;
3057 return load_method (domain, amodule, klass->image, method, method->token, method_index);
3061 * Same as mono_aot_get_method, but we try to avoid loading any metadata from the
3065 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
3067 MonoAotModule *aot_module = image->aot_module;
3073 method_index = mono_metadata_token_index (token) - 1;
3075 return load_method (domain, aot_module, image, NULL, token, method_index);
3081 } IsGotEntryUserData;
3084 check_is_got_entry (gpointer key, gpointer value, gpointer user_data)
3086 IsGotEntryUserData *data = (IsGotEntryUserData*)user_data;
3087 MonoAotModule *aot_module = (MonoAotModule*)value;
3089 if (aot_module->got && (data->addr >= (guint8*)(aot_module->got)) && (data->addr < (guint8*)(aot_module->got + aot_module->info.got_size)))
3094 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
3096 IsGotEntryUserData user_data;
3101 user_data.addr = addr;
3102 user_data.res = FALSE;
3104 g_hash_table_foreach (aot_modules, check_is_got_entry, &user_data);
3107 return user_data.res;
3112 MonoAotModule *module;
3113 } FindAotModuleUserData;
3116 find_aot_module_cb (gpointer key, gpointer value, gpointer user_data)
3118 FindAotModuleUserData *data = (FindAotModuleUserData*)user_data;
3119 MonoAotModule *aot_module = (MonoAotModule*)value;
3121 if ((data->addr >= (guint8*)(aot_module->code)) && (data->addr < (guint8*)(aot_module->code_end)))
3122 data->module = aot_module;
3125 static inline MonoAotModule*
3126 find_aot_module (guint8 *code)
3128 FindAotModuleUserData user_data;
3133 /* Reading these need no locking */
3134 if (((gsize)code < aot_code_low_addr) || ((gsize)code > aot_code_high_addr))
3137 user_data.addr = code;
3138 user_data.module = NULL;
3141 g_hash_table_foreach (aot_modules, find_aot_module_cb, &user_data);
3144 return user_data.module;
3148 mono_aot_patch_plt_entry (guint8 *code, gpointer *got, mgreg_t *regs, guint8 *addr)
3151 * Since AOT code is only used in the root domain,
3152 * mono_domain_get () != mono_get_root_domain () means the calling method
3153 * is AppDomain:InvokeInDomain, so this is the same check as in
3154 * mono_method_same_domain () but without loading the metadata for the method.
3156 if (mono_domain_get () == mono_get_root_domain ())
3157 mono_arch_patch_plt_entry (code, got, regs, addr);
3161 * mono_aot_plt_resolve:
3163 * This function is called by the entries in the PLT to resolve the actual method that
3164 * needs to be called. It returns a trampoline to the method and patches the PLT entry.
3165 * Returns NULL if the something cannot be loaded.
3168 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
3170 #ifdef MONO_ARCH_AOT_SUPPORTED
3171 guint8 *p, *target, *plt_entry;
3173 MonoAotModule *module = (MonoAotModule*)aot_module;
3174 gboolean res, no_ftnptr = FALSE;
3177 //printf ("DYN: %p %d\n", aot_module, plt_info_offset);
3179 p = &module->blob [plt_info_offset];
3181 ji.type = decode_value (p, &p);
3183 mp = mono_mempool_new_size (512);
3184 res = decode_patch (module, mp, &ji, p, &p);
3187 mono_mempool_destroy (mp);
3192 * Avoid calling resolve_patch_target in the full-aot case if possible, since
3193 * it would create a trampoline, and we don't need that.
3194 * We could do this only if the method does not need the special handling
3195 * in mono_magic_trampoline ().
3197 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) &&
3198 !mono_method_needs_static_rgctx_invoke (ji.data.method, FALSE)) {
3199 target = mono_jit_compile_method (ji.data.method);
3202 target = mono_resolve_patch_target (NULL, mono_domain_get (), NULL, &ji, TRUE);
3206 * The trampoline expects us to return a function descriptor on platforms which use
3207 * it, but resolve_patch_target returns a direct function pointer for some type of
3208 * patches, so have to translate between the two.
3209 * FIXME: Clean this up, but how ?
3211 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) {
3212 /* These should already have a function descriptor */
3213 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3214 /* Our function descriptors have a 0 environment, gcc created ones don't */
3215 if (ji.type != MONO_PATCH_INFO_INTERNAL_METHOD && ji.type != MONO_PATCH_INFO_JIT_ICALL_ADDR && ji.type != MONO_PATCH_INFO_ICALL_ADDR)
3216 g_assert (((gpointer*)target) [2] == 0);
3219 } else if (!no_ftnptr) {
3220 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3221 g_assert (((gpointer*)target) [2] != 0);
3223 target = mono_create_ftnptr (mono_domain_get (), target);
3226 mono_mempool_destroy (mp);
3228 /* Patch the PLT entry with target which might be the actual method not a trampoline */
3229 plt_entry = mono_aot_get_plt_entry (code);
3230 g_assert (plt_entry);
3231 mono_aot_patch_plt_entry (plt_entry, module->got, NULL, target);
3235 g_assert_not_reached ();
3243 * Initialize the PLT table of the AOT module. Called lazily when the first AOT
3244 * method in the module is loaded to avoid committing memory by writing to it.
3245 * LOCKING: Assumes the AOT lock is held.
3248 init_plt (MonoAotModule *amodule)
3253 if (amodule->plt_inited)
3256 tramp = mono_create_specific_trampoline (amodule, MONO_TRAMPOLINE_AOT_PLT, mono_get_root_domain (), NULL);
3259 * Initialize the PLT entries in the GOT to point to the default targets.
3262 tramp = mono_create_ftnptr (mono_domain_get (), tramp);
3263 for (i = 1; i < amodule->info.plt_size; ++i)
3264 /* All the default entries point to the AOT trampoline */
3265 ((gpointer*)amodule->got)[amodule->info.plt_got_offset_base + i] = tramp;
3267 amodule->plt_inited = TRUE;
3271 * mono_aot_get_plt_entry:
3273 * Return the address of the PLT entry called by the code at CODE if exists.
3276 mono_aot_get_plt_entry (guint8 *code)
3278 MonoAotModule *aot_module = find_aot_module (code);
3283 #ifdef MONO_ARCH_AOT_SUPPORTED
3285 guint8 *target = mono_arch_get_call_target (code);
3287 if ((target >= (guint8*)(aot_module->plt)) && (target < (guint8*)(aot_module->plt_end)))
3291 g_assert_not_reached ();
3298 * mono_aot_get_plt_info_offset:
3300 * Return the PLT info offset belonging to the plt entry called by CODE.
3303 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
3305 guint8 *plt_entry = mono_aot_get_plt_entry (code);
3307 g_assert (plt_entry);
3309 /* The offset is embedded inside the code after the plt entry */
3310 #ifdef MONO_ARCH_AOT_SUPPORTED
3311 return mono_arch_get_plt_info_offset (plt_entry, regs, code);
3313 g_assert_not_reached ();
3319 mono_create_ftnptr_malloc (guint8 *code)
3321 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3322 MonoPPCFunctionDescriptor *ftnptr = g_malloc0 (sizeof (MonoPPCFunctionDescriptor));
3324 ftnptr->code = code;
3334 static GHashTable *aot_jit_icall_hash;
3337 * mono_aot_register_jit_icall:
3339 * Register a JIT icall which is called by trampolines in full-aot mode. This should
3340 * be called from mono_arch_init () during startup.
3343 mono_aot_register_jit_icall (const char *name, gpointer addr)
3345 /* No need for locking */
3346 if (!aot_jit_icall_hash)
3347 aot_jit_icall_hash = g_hash_table_new (g_str_hash, g_str_equal);
3348 g_hash_table_insert (aot_jit_icall_hash, (char*)name, addr);
3354 * Load the function named NAME from the aot image.
3357 load_function (MonoAotModule *amodule, const char *name)
3361 int n_patches, pindex;
3367 symbol = g_strdup_printf ("%s", name);
3368 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&code);
3371 g_error ("Symbol '%s' not found in AOT file '%s'.\n", name, amodule->aot_name);
3373 mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT FOUND function '%s' in AOT file '%s'.\n", name, amodule->aot_name);
3377 symbol = g_strdup_printf ("%s_p", name);
3378 find_symbol (amodule->sofile, amodule->globals, symbol, (gpointer *)&p);
3381 /* Nothing to patch */
3384 p = amodule->blob + *(guint32*)p;
3386 /* Similar to mono_aot_load_method () */
3388 n_patches = decode_value (p, &p);
3391 MonoJumpInfo *patches;
3394 mp = mono_mempool_new ();
3396 patches = load_patch_info (amodule, mp, n_patches, &got_slots, p, &p);
3399 for (pindex = 0; pindex < n_patches; ++pindex) {
3400 MonoJumpInfo *ji = &patches [pindex];
3403 if (amodule->got [got_slots [pindex]])
3407 * When this code is executed, the runtime may not be initalized yet, so
3408 * resolve the patch info by hand.
3410 if (ji->type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
3411 if (!strcmp (ji->data.name, "mono_get_lmf_addr")) {
3412 target = mono_get_lmf_addr;
3413 } else if (!strcmp (ji->data.name, "mono_thread_force_interruption_checkpoint")) {
3414 target = mono_thread_force_interruption_checkpoint;
3415 } else if (!strcmp (ji->data.name, "mono_exception_from_token")) {
3416 target = mono_exception_from_token;
3417 } else if (!strcmp (ji->data.name, "mono_throw_exception")) {
3418 target = mono_get_throw_exception ();
3419 } else if (strstr (ji->data.name, "trampoline_func_") == ji->data.name) {
3420 int tramp_type2 = atoi (ji->data.name + strlen ("trampoline_func_"));
3421 target = (gpointer)mono_get_trampoline_func (tramp_type2);
3422 } else if (strstr (ji->data.name, "specific_trampoline_lazy_fetch_") == ji->data.name) {
3423 /* atoll is needed because the the offset is unsigned */
3427 res = sscanf (ji->data.name, "specific_trampoline_lazy_fetch_%u", &slot);
3428 g_assert (res == 1);
3429 target = mono_create_specific_trampoline (GUINT_TO_POINTER (slot), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, mono_get_root_domain (), NULL);
3430 target = mono_create_ftnptr_malloc (target);
3431 } else if (!strcmp (ji->data.name, "specific_trampoline_monitor_enter")) {
3432 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_MONITOR_ENTER, mono_get_root_domain (), NULL);
3433 target = mono_create_ftnptr_malloc (target);
3434 } else if (!strcmp (ji->data.name, "specific_trampoline_monitor_exit")) {
3435 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_MONITOR_EXIT, mono_get_root_domain (), NULL);
3436 target = mono_create_ftnptr_malloc (target);
3437 } else if (!strcmp (ji->data.name, "specific_trampoline_generic_class_init")) {
3438 target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_GENERIC_CLASS_INIT, mono_get_root_domain (), NULL);
3439 target = mono_create_ftnptr_malloc (target);
3440 } else if (!strcmp (ji->data.name, "mono_thread_get_and_clear_pending_exception")) {
3441 target = mono_thread_get_and_clear_pending_exception;
3442 } else if (strstr (ji->data.name, "generic_trampoline_monitor_enter")) {
3445 symbol = g_strdup_printf ("generic_trampoline_%d", MONO_TRAMPOLINE_MONITOR_ENTER);
3446 target = mono_aot_get_trampoline (symbol);
3448 } else if (strstr (ji->data.name, "generic_trampoline_monitor_exit")) {
3451 symbol = g_strdup_printf ("generic_trampoline_%d", MONO_TRAMPOLINE_MONITOR_EXIT);
3452 target = mono_aot_get_trampoline (symbol);
3454 } else if (strstr (ji->data.name, "generic_trampoline_generic_class_init")) {
3457 symbol = g_strdup_printf ("generic_trampoline_%d", MONO_TRAMPOLINE_GENERIC_CLASS_INIT);
3458 target = mono_aot_get_trampoline (symbol);
3460 } else if (aot_jit_icall_hash && g_hash_table_lookup (aot_jit_icall_hash, ji->data.name)) {
3461 /* Registered by mono_arch_init () */
3462 target = g_hash_table_lookup (aot_jit_icall_hash, ji->data.name);
3464 fprintf (stderr, "Unknown relocation '%s'\n", ji->data.name);
3465 g_assert_not_reached ();
3469 /* Hopefully the code doesn't have patches which need method or
3472 target = mono_resolve_patch_target (NULL, NULL, code, ji, FALSE);
3476 amodule->got [got_slots [pindex]] = target;
3481 mono_mempool_destroy (mp);
3488 * Return the trampoline identified by NAME from the mscorlib AOT file.
3489 * On ppc64, this returns a function descriptor.
3492 mono_aot_get_trampoline (const char *name)
3495 MonoAotModule *amodule;
3497 image = mono_defaults.corlib;
3500 amodule = image->aot_module;
3503 return mono_create_ftnptr_malloc (load_function (amodule, name));
3506 /* Return a given kind of trampoline */
3508 get_numerous_trampoline (MonoAotTrampoline tramp_type, int n_got_slots, MonoAotModule **out_amodule, guint32 *got_offset, guint32 *out_tramp_size)
3510 MonoAotModule *amodule;
3511 int index, tramp_size;
3514 /* Currently, we keep all trampolines in the mscorlib AOT image */
3515 image = mono_defaults.corlib;
3520 amodule = image->aot_module;
3523 *out_amodule = amodule;
3525 if (amodule->trampoline_index [tramp_type] == amodule->info.num_trampolines [tramp_type])
3526 g_error ("Ran out of trampolines of type %d in '%s' (%d)\n", tramp_type, image->name, amodule->info.num_trampolines [tramp_type]);
3528 index = amodule->trampoline_index [tramp_type] ++;
3532 *got_offset = amodule->info.trampoline_got_offset_base [tramp_type] + (index * n_got_slots);
3534 tramp_size = amodule->info.trampoline_size [tramp_type];
3537 *out_tramp_size = tramp_size;
3539 return amodule->trampolines [tramp_type] + (index * tramp_size);
3543 * Return a specific trampoline from the AOT file.
3546 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
3548 MonoAotModule *amodule;
3549 guint32 got_offset, tramp_size;
3550 guint8 *code, *tramp;
3551 static gpointer generic_trampolines [MONO_TRAMPOLINE_NUM];
3552 static gboolean inited;
3553 static guint32 num_trampolines;
3559 mono_counters_register ("Specific trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &num_trampolines);
3568 if (!generic_trampolines [tramp_type]) {
3571 symbol = g_strdup_printf ("generic_trampoline_%d", tramp_type);
3572 generic_trampolines [tramp_type] = mono_aot_get_trampoline (symbol);
3576 tramp = generic_trampolines [tramp_type];
3579 code = get_numerous_trampoline (MONO_AOT_TRAMP_SPECIFIC, 2, &amodule, &got_offset, &tramp_size);
3581 amodule->got [got_offset] = tramp;
3582 amodule->got [got_offset + 1] = arg1;
3585 *code_len = tramp_size;
3591 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
3593 MonoAotModule *amodule;
3597 code = get_numerous_trampoline (MONO_AOT_TRAMP_STATIC_RGCTX, 2, &amodule, &got_offset, NULL);
3599 amodule->got [got_offset] = ctx;
3600 amodule->got [got_offset + 1] = addr;
3602 /* The caller expects an ftnptr */
3603 return mono_create_ftnptr (mono_domain_get (), code);
3607 mono_aot_get_unbox_trampoline (MonoMethod *method)
3609 guint32 method_index = mono_metadata_token_index (method->token) - 1;
3610 MonoAotModule *amodule;
3614 if (method->is_inflated && !mono_method_is_generic_sharable_impl (method, FALSE)) {
3615 guint32 index = find_extra_method (method, &amodule);
3616 g_assert (index != 0xffffff);
3618 symbol = g_strdup_printf ("ut_e_%d", index);
3620 amodule = method->klass->image->aot_module;
3623 symbol = g_strdup_printf ("ut_%d", method_index);
3625 code = load_function (amodule, symbol);
3628 /* The caller expects an ftnptr */
3629 return mono_create_ftnptr (mono_domain_get (), code);
3633 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
3638 symbol = g_strdup_printf ("rgctx_fetch_trampoline_%u", slot);
3639 code = load_function (mono_defaults.corlib->aot_module, symbol);
3641 /* The caller expects an ftnptr */
3642 return mono_create_ftnptr (mono_domain_get (), code);
3646 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
3652 MonoAotModule *amodule;
3654 code = get_numerous_trampoline (MONO_AOT_TRAMP_IMT_THUNK, 1, &amodule, &got_offset, NULL);
3656 /* Save the entries into an array */
3657 buf = mono_domain_alloc (domain, (count + 1) * 2 * sizeof (gpointer));
3658 for (i = 0; i < count; ++i) {
3659 MonoIMTCheckItem *item = imt_entries [i];
3661 g_assert (item->key);
3663 g_assert (!item->has_target_code);
3665 buf [(i * 2)] = item->key;
3666 buf [(i * 2) + 1] = &(vtable->vtable [item->value.vtable_slot]);
3668 buf [(count * 2)] = NULL;
3669 buf [(count * 2) + 1] = fail_tramp;
3671 amodule->got [got_offset] = buf;
3677 * mono_aot_set_make_unreadable:
3679 * Set whenever to make all mmaped memory unreadable. In conjuction with a
3680 * SIGSEGV handler, this is useful to find out which pages the runtime tries to read.
3683 mono_aot_set_make_unreadable (gboolean unreadable)
3687 make_unreadable = unreadable;
3689 if (make_unreadable && !inited) {
3690 mono_counters_register ("AOT pagefaults", MONO_COUNTER_JIT | MONO_COUNTER_INT, &n_pagefaults);
3695 MonoAotModule *module;
3700 find_map (gpointer key, gpointer value, gpointer user_data)
3702 MonoAotModule *module = (MonoAotModule*)value;
3703 FindMapUserData *data = (FindMapUserData*)user_data;
3706 if ((data->ptr >= module->mem_begin) && (data->ptr < module->mem_end))
3707 data->module = module;
3710 static MonoAotModule*
3711 find_module_for_addr (void *ptr)
3713 FindMapUserData data;
3715 if (!make_unreadable)
3719 data.ptr = (guint8*)ptr;
3722 g_hash_table_foreach (aot_modules, (GHFunc)find_map, &data);
3729 * mono_aot_is_pagefault:
3731 * Should be called from a SIGSEGV signal handler to find out whenever @ptr is
3732 * within memory allocated by this module.
3735 mono_aot_is_pagefault (void *ptr)
3737 if (!make_unreadable)
3741 * Not signal safe, but SIGSEGV's are synchronous, and
3742 * this is only turned on by a MONO_DEBUG option.
3744 return find_module_for_addr (ptr) != NULL;
3748 * mono_aot_handle_pagefault:
3750 * Handle a pagefault caused by an unreadable page by making it readable again.
3753 mono_aot_handle_pagefault (void *ptr)
3755 #ifndef PLATFORM_WIN32
3756 guint8* start = (guint8*)ROUND_DOWN (((gssize)ptr), mono_pagesize ());
3760 res = mono_mprotect (start, mono_pagesize (), MONO_MMAP_READ|MONO_MMAP_WRITE|MONO_MMAP_EXEC);
3761 g_assert (res == 0);
3772 mono_aot_init (void)
3777 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
3783 mono_aot_is_got_entry (guint8 *code, guint8 *addr)
3789 mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
3795 mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass)
3801 mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr)
3807 mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token)
3813 mono_aot_get_plt_entry (guint8 *code)
3819 mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code)
3825 mono_aot_patch_plt_entry (guint8 *code, gpointer *got, mgreg_t *regs, guint8 *addr)
3830 mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot)
3836 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code)
3838 g_assert_not_reached ();
3844 mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
3846 g_assert_not_reached ();
3851 mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr)
3853 g_assert_not_reached ();
3858 mono_aot_get_trampoline (const char *name)
3860 g_assert_not_reached ();
3865 mono_aot_get_unbox_trampoline (MonoMethod *method)
3867 g_assert_not_reached ();
3872 mono_aot_get_lazy_fetch_trampoline (guint32 slot)
3874 g_assert_not_reached ();
3879 mono_aot_get_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp)
3881 g_assert_not_reached ();
3886 mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len)
3888 g_assert_not_reached ();
3893 mono_aot_register_jit_icall (const char *name, gpointer addr)