2 * loader.c: Image Loader
5 * Paolo Molaro (lupus@ximian.com)
6 * Miguel de Icaza (miguel@ximian.com)
7 * Patrik Torstensson (patrik.torstensson@labs2.com)
9 * Copyright 2001-2003 Ximian, Inc (http://www.ximian.com)
10 * Copyright 2004-2009 Novell, Inc (http://www.novell.com)
11 * Copyright 2011 Xamarin, Inc (http://www.xamarin.com)
13 * This file is used by the interpreter and the JIT engine to locate
14 * assemblies. Used to load AssemblyRef and later to resolve various
18 * This should keep track of the assembly versions that we are loading.
20 * Licensed under the MIT license. See LICENSE file in the project root for full license information.
27 #include <mono/metadata/metadata.h>
28 #include <mono/metadata/image.h>
29 #include <mono/metadata/assembly.h>
30 #include <mono/metadata/tokentype.h>
31 #include <mono/metadata/tabledefs.h>
32 #include <mono/metadata/metadata-internals.h>
33 #include <mono/metadata/loader.h>
34 #include <mono/metadata/class-internals.h>
35 #include <mono/metadata/debug-helpers.h>
36 #include <mono/metadata/reflection.h>
37 #include <mono/metadata/profiler.h>
38 #include <mono/metadata/profiler-private.h>
39 #include <mono/metadata/exception.h>
40 #include <mono/metadata/marshal.h>
41 #include <mono/metadata/lock-tracer.h>
42 #include <mono/metadata/verify-internals.h>
43 #include <mono/utils/mono-logger-internals.h>
44 #include <mono/utils/mono-dl.h>
45 #include <mono/utils/mono-membar.h>
46 #include <mono/utils/mono-counters.h>
47 #include <mono/utils/mono-error-internals.h>
48 #include <mono/utils/mono-tls.h>
49 #include <mono/utils/mono-path.h>
51 MonoDefaults mono_defaults;
54 * This lock protects the hash tables inside MonoImage used by the metadata
55 * loading functions in class.c and loader.c.
57 * See domain-internals.h for locking policy in combination with the
60 static MonoCoopMutex loader_mutex;
61 static mono_mutex_t global_loader_data_mutex;
62 static gboolean loader_lock_inited;
65 static guint32 inflated_signatures_size;
66 static guint32 memberref_sig_cache_size;
67 static guint32 methods_size;
68 static guint32 signatures_size;
71 * This TLS variable holds how many times the current thread has acquired the loader
74 MonoNativeTlsKey loader_lock_nest_id;
76 static void dllmap_cleanup (void);
80 global_loader_data_lock (void)
82 mono_locks_os_acquire (&global_loader_data_mutex, LoaderGlobalDataLock);
86 global_loader_data_unlock (void)
88 mono_locks_os_release (&global_loader_data_mutex, LoaderGlobalDataLock);
94 static gboolean inited;
97 mono_coop_mutex_init_recursive (&loader_mutex);
98 mono_os_mutex_init_recursive (&global_loader_data_mutex);
99 loader_lock_inited = TRUE;
101 mono_native_tls_alloc (&loader_lock_nest_id, NULL);
103 mono_counters_init ();
104 mono_counters_register ("Inflated signatures size",
105 MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &inflated_signatures_size);
106 mono_counters_register ("Memberref signature cache size",
107 MONO_COUNTER_METADATA | MONO_COUNTER_INT, &memberref_sig_cache_size);
108 mono_counters_register ("MonoMethod size",
109 MONO_COUNTER_METADATA | MONO_COUNTER_INT, &methods_size);
110 mono_counters_register ("MonoMethodSignature size",
111 MONO_COUNTER_METADATA | MONO_COUNTER_INT, &signatures_size);
118 mono_loader_cleanup (void)
122 mono_native_tls_free (loader_lock_nest_id);
124 mono_coop_mutex_destroy (&loader_mutex);
125 mono_os_mutex_destroy (&global_loader_data_mutex);
126 loader_lock_inited = FALSE;
130 * find_cached_memberref_sig:
132 * Return a cached copy of the memberref signature identified by SIG_IDX.
133 * We use a gpointer since the cache stores both MonoTypes and MonoMethodSignatures.
134 * A cache is needed since the type/signature parsing routines allocate everything
135 * from a mempool, so without a cache, multiple requests for the same signature would
136 * lead to unbounded memory growth. For normal methods/fields this is not a problem
137 * since the resulting methods/fields are cached, but inflated methods/fields cannot
139 * LOCKING: Acquires the loader lock.
142 find_cached_memberref_sig (MonoImage *image, guint32 sig_idx)
146 mono_image_lock (image);
147 res = g_hash_table_lookup (image->memberref_signatures, GUINT_TO_POINTER (sig_idx));
148 mono_image_unlock (image);
154 cache_memberref_sig (MonoImage *image, guint32 sig_idx, gpointer sig)
158 mono_image_lock (image);
159 prev_sig = g_hash_table_lookup (image->memberref_signatures, GUINT_TO_POINTER (sig_idx));
161 /* Somebody got in before us */
165 g_hash_table_insert (image->memberref_signatures, GUINT_TO_POINTER (sig_idx), sig);
166 /* An approximation based on glib 2.18 */
167 memberref_sig_cache_size += sizeof (gpointer) * 4;
169 mono_image_unlock (image);
174 static MonoClassField*
175 field_from_memberref (MonoImage *image, guint32 token, MonoClass **retklass,
176 MonoGenericContext *context, MonoError *error)
178 MonoClass *klass = NULL;
179 MonoClassField *field;
180 MonoTableInfo *tables = image->tables;
183 guint32 nindex, class_index;
186 guint32 idx = mono_metadata_token_index (token);
188 mono_error_init (error);
190 mono_metadata_decode_row (&tables [MONO_TABLE_MEMBERREF], idx-1, cols, MONO_MEMBERREF_SIZE);
191 nindex = cols [MONO_MEMBERREF_CLASS] >> MONO_MEMBERREF_PARENT_BITS;
192 class_index = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
194 fname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
196 if (!mono_verifier_verify_memberref_field_signature (image, cols [MONO_MEMBERREF_SIGNATURE], NULL)) {
197 mono_error_set_bad_image (error, image, "Bad field '%s' signature 0x%08x", class_index, token);
201 switch (class_index) {
202 case MONO_MEMBERREF_PARENT_TYPEDEF:
203 klass = mono_class_get_checked (image, MONO_TOKEN_TYPE_DEF | nindex, error);
205 case MONO_MEMBERREF_PARENT_TYPEREF:
206 klass = mono_class_from_typeref_checked (image, MONO_TOKEN_TYPE_REF | nindex, error);
208 case MONO_MEMBERREF_PARENT_TYPESPEC:
209 klass = mono_class_get_and_inflate_typespec_checked (image, MONO_TOKEN_TYPE_SPEC | nindex, context, error);
212 mono_error_set_bad_image (error, image, "Bad field field '%s' signature 0x%08x", class_index, token);
218 ptr = mono_metadata_blob_heap (image, cols [MONO_MEMBERREF_SIGNATURE]);
219 mono_metadata_decode_blob_size (ptr, &ptr);
220 /* we may want to check the signature here... */
223 mono_error_set_field_load (error, klass, fname, "Bad field signature class token %08x field name %s token %08x", class_index, fname, token);
227 /* FIXME: This needs a cache, especially for generic instances, since
228 * we ask mono_metadata_parse_type_checked () to allocates everything from a mempool.
229 * FIXME part2, mono_metadata_parse_type_checked actually allows for a transient type instead.
230 * FIXME part3, transient types are not 100% transient, so we need to take care of that first.
232 sig_type = (MonoType *)find_cached_memberref_sig (image, cols [MONO_MEMBERREF_SIGNATURE]);
234 MonoError inner_error;
235 sig_type = mono_metadata_parse_type_checked (image, NULL, 0, FALSE, ptr, &ptr, &inner_error);
236 if (sig_type == NULL) {
237 mono_error_set_field_load (error, klass, fname, "Could not parse field '%s' signature %08x due to: %s", fname, token, mono_error_get_message (&inner_error));
238 mono_error_cleanup (&inner_error);
241 sig_type = (MonoType *)cache_memberref_sig (image, cols [MONO_MEMBERREF_SIGNATURE], sig_type);
244 mono_class_init (klass); /*FIXME is this really necessary?*/
247 field = mono_class_get_field_from_name_full (klass, fname, sig_type);
250 mono_error_set_field_load (error, klass, fname, "Could not find field '%s'", fname);
257 * mono_field_from_token:
258 * @deprecated use the _checked variant
259 * Notes: runtime code MUST not use this function
262 mono_field_from_token (MonoImage *image, guint32 token, MonoClass **retklass, MonoGenericContext *context)
265 MonoClassField *res = mono_field_from_token_checked (image, token, retklass, context, &error);
266 g_assert (mono_error_ok (&error));
271 mono_field_from_token_checked (MonoImage *image, guint32 token, MonoClass **retklass, MonoGenericContext *context, MonoError *error)
275 MonoClassField *field;
277 mono_error_init (error);
279 if (image_is_dynamic (image)) {
280 MonoClassField *result;
281 MonoClass *handle_class;
284 MonoError inner_error;
285 result = (MonoClassField *)mono_lookup_dynamic_token_class (image, token, TRUE, &handle_class, context, &inner_error);
286 mono_error_cleanup (&inner_error);
287 // This checks the memberref type as well
288 if (!result || handle_class != mono_defaults.fieldhandle_class) {
289 mono_error_set_bad_image (error, image, "Bad field token 0x%08x", token);
292 *retklass = result->parent;
296 if ((field = (MonoClassField *)mono_conc_hashtable_lookup (image->field_cache, GUINT_TO_POINTER (token)))) {
297 *retklass = field->parent;
301 if (mono_metadata_token_table (token) == MONO_TABLE_MEMBERREF) {
302 field = field_from_memberref (image, token, retklass, context, error);
304 type = mono_metadata_typedef_from_field (image, mono_metadata_token_index (token));
306 mono_error_set_bad_image (error, image, "Invalid field token 0x%08x", token);
309 k = mono_class_get_checked (image, MONO_TOKEN_TYPE_DEF | type, error);
316 field = mono_class_get_field (k, token);
318 mono_error_set_bad_image (error, image, "Could not resolve field token 0x%08x", token);
322 if (field && field->parent && !field->parent->generic_class && !field->parent->generic_container) {
323 mono_image_lock (image);
324 mono_conc_hashtable_insert (image->field_cache, GUINT_TO_POINTER (token), field);
325 mono_image_unlock (image);
332 mono_metadata_signature_vararg_match (MonoMethodSignature *sig1, MonoMethodSignature *sig2)
336 if (sig1->hasthis != sig2->hasthis ||
337 sig1->sentinelpos != sig2->sentinelpos)
340 for (i = 0; i < sig1->sentinelpos; i++) {
341 MonoType *p1 = sig1->params[i];
342 MonoType *p2 = sig2->params[i];
344 /*if (p1->attrs != p2->attrs)
347 if (!mono_metadata_type_equal (p1, p2))
351 if (!mono_metadata_type_equal (sig1->ret, sig2->ret))
357 find_method_in_class (MonoClass *klass, const char *name, const char *qname, const char *fqname,
358 MonoMethodSignature *sig, MonoClass *from_class, MonoError *error)
362 /* Search directly in the metadata to avoid calling setup_methods () */
363 mono_error_init (error);
365 /* FIXME: !from_class->generic_class condition causes test failures. */
366 if (klass->type_token && !image_is_dynamic (klass->image) && !klass->methods && !klass->rank && klass == from_class && !from_class->generic_class) {
367 for (i = 0; i < klass->method.count; ++i) {
368 guint32 cols [MONO_METHOD_SIZE];
371 MonoMethodSignature *other_sig;
373 mono_metadata_decode_table_row (klass->image, MONO_TABLE_METHOD, klass->method.first + i, cols, MONO_METHOD_SIZE);
375 m_name = mono_metadata_string_heap (klass->image, cols [MONO_METHOD_NAME]);
377 if (!((fqname && !strcmp (m_name, fqname)) ||
378 (qname && !strcmp (m_name, qname)) ||
379 (name && !strcmp (m_name, name))))
382 method = mono_get_method_checked (klass->image, MONO_TOKEN_METHOD_DEF | (klass->method.first + i + 1), klass, NULL, error);
383 if (!mono_error_ok (error)) //bail out if we hit a loader error
386 other_sig = mono_method_signature_checked (method, error);
387 if (!mono_error_ok (error)) //bail out if we hit a loader error
389 if (other_sig && (sig->call_convention != MONO_CALL_VARARG) && mono_metadata_signature_equal (sig, other_sig))
395 mono_class_setup_methods (klass); /* FIXME don't swallow the error here. */
397 We can't fail lookup of methods otherwise the runtime will fail with MissingMethodException instead of TypeLoadException.
398 See mono/tests/generic-type-load-exception.2.il
399 FIXME we should better report this error to the caller
401 if (!klass->methods || mono_class_has_failure (klass)) {
402 mono_error_set_type_load_class (error, klass, "Could not find method due to a type load error"); //FIXME get the error from the class
406 for (i = 0; i < klass->method.count; ++i) {
407 MonoMethod *m = klass->methods [i];
408 MonoMethodSignature *msig;
410 /* We must cope with failing to load some of the types. */
414 if (!((fqname && !strcmp (m->name, fqname)) ||
415 (qname && !strcmp (m->name, qname)) ||
416 (name && !strcmp (m->name, name))))
418 msig = mono_method_signature_checked (m, error);
419 if (!mono_error_ok (error)) //bail out if we hit a loader error
425 if (sig->call_convention == MONO_CALL_VARARG) {
426 if (mono_metadata_signature_vararg_match (sig, msig))
429 if (mono_metadata_signature_equal (sig, msig))
434 if (i < klass->method.count)
435 return mono_class_get_method_by_index (from_class, i);
440 find_method (MonoClass *in_class, MonoClass *ic, const char* name, MonoMethodSignature *sig, MonoClass *from_class, MonoError *error)
443 char *qname, *fqname, *class_name;
444 gboolean is_interface;
445 MonoMethod *result = NULL;
446 MonoClass *initial_class = in_class;
448 mono_error_init (error);
449 is_interface = MONO_CLASS_IS_INTERFACE (in_class);
452 class_name = mono_type_get_name_full (&ic->byval_arg, MONO_TYPE_NAME_FORMAT_IL);
454 qname = g_strconcat (class_name, ".", name, NULL);
455 if (ic->name_space && ic->name_space [0])
456 fqname = g_strconcat (ic->name_space, ".", class_name, ".", name, NULL);
460 class_name = qname = fqname = NULL;
463 g_assert (from_class);
464 result = find_method_in_class (in_class, name, qname, fqname, sig, from_class, error);
465 if (result || !mono_error_ok (error))
468 if (name [0] == '.' && (!strcmp (name, ".ctor") || !strcmp (name, ".cctor")))
472 * This happens when we fail to lazily load the interfaces of one of the types.
473 * On such case we can't just bail out since user code depends on us trying harder.
475 if (from_class->interface_offsets_count != in_class->interface_offsets_count) {
476 in_class = in_class->parent;
477 from_class = from_class->parent;
481 for (i = 0; i < in_class->interface_offsets_count; i++) {
482 MonoClass *in_ic = in_class->interfaces_packed [i];
483 MonoClass *from_ic = from_class->interfaces_packed [i];
484 char *ic_qname, *ic_fqname, *ic_class_name;
486 ic_class_name = mono_type_get_name_full (&in_ic->byval_arg, MONO_TYPE_NAME_FORMAT_IL);
487 ic_qname = g_strconcat (ic_class_name, ".", name, NULL);
488 if (in_ic->name_space && in_ic->name_space [0])
489 ic_fqname = g_strconcat (in_ic->name_space, ".", ic_class_name, ".", name, NULL);
493 result = find_method_in_class (in_ic, ic ? name : NULL, ic_qname, ic_fqname, sig, from_ic, error);
494 g_free (ic_class_name);
497 if (result || !mono_error_ok (error))
501 in_class = in_class->parent;
502 from_class = from_class->parent;
504 g_assert (!in_class == !from_class);
507 result = find_method_in_class (mono_defaults.object_class, name, qname, fqname, sig, mono_defaults.object_class, error);
509 //we did not find the method
510 if (!result && mono_error_ok (error)) {
511 char *desc = mono_signature_get_desc (sig, FALSE);
512 mono_error_set_method_load (error, initial_class, name, "Could not find method with signature %s", desc);
523 static MonoMethodSignature*
524 inflate_generic_signature_checked (MonoImage *image, MonoMethodSignature *sig, MonoGenericContext *context, MonoError *error)
526 MonoMethodSignature *res;
530 mono_error_init (error);
534 res = (MonoMethodSignature *)g_malloc0 (MONO_SIZEOF_METHOD_SIGNATURE + ((gint32)sig->param_count) * sizeof (MonoType*));
535 res->param_count = sig->param_count;
536 res->sentinelpos = -1;
537 res->ret = mono_class_inflate_generic_type_checked (sig->ret, context, error);
538 if (!mono_error_ok (error))
540 is_open = mono_class_is_open_constructed_type (res->ret);
541 for (i = 0; i < sig->param_count; ++i) {
542 res->params [i] = mono_class_inflate_generic_type_checked (sig->params [i], context, error);
543 if (!mono_error_ok (error))
547 is_open = mono_class_is_open_constructed_type (res->params [i]);
549 res->hasthis = sig->hasthis;
550 res->explicit_this = sig->explicit_this;
551 res->call_convention = sig->call_convention;
552 res->pinvoke = sig->pinvoke;
553 res->generic_param_count = sig->generic_param_count;
554 res->sentinelpos = sig->sentinelpos;
555 res->has_type_parameters = is_open;
556 res->is_inflated = 1;
561 mono_metadata_free_type (res->ret);
562 for (i = 0; i < sig->param_count; ++i) {
564 mono_metadata_free_type (res->params [i]);
571 * mono_inflate_generic_signature:
573 * Inflate SIG with CONTEXT, and return a canonical copy. On error, set ERROR, and return NULL.
576 mono_inflate_generic_signature (MonoMethodSignature *sig, MonoGenericContext *context, MonoError *error)
578 MonoMethodSignature *res, *cached;
580 res = inflate_generic_signature_checked (NULL, sig, context, error);
581 if (!mono_error_ok (error))
583 cached = mono_metadata_get_inflated_signature (res, context);
585 mono_metadata_free_inflated_signature (res);
589 static MonoMethodHeader*
590 inflate_generic_header (MonoMethodHeader *header, MonoGenericContext *context, MonoError *error)
592 size_t locals_size = sizeof (gpointer) * header->num_locals;
593 size_t clauses_size = header->num_clauses * sizeof (MonoExceptionClause);
594 size_t header_size = MONO_SIZEOF_METHOD_HEADER + locals_size + clauses_size;
595 MonoMethodHeader *res = (MonoMethodHeader *)g_malloc0 (header_size);
596 res->num_locals = header->num_locals;
597 res->clauses = (MonoExceptionClause *) &res->locals [res->num_locals] ;
598 memcpy (res->clauses, header->clauses, clauses_size);
600 res->code = header->code;
601 res->code_size = header->code_size;
602 res->max_stack = header->max_stack;
603 res->num_clauses = header->num_clauses;
604 res->init_locals = header->init_locals;
606 res->is_transient = TRUE;
608 mono_error_init (error);
610 for (int i = 0; i < header->num_locals; ++i) {
611 res->locals [i] = mono_class_inflate_generic_type_checked (header->locals [i], context, error);
615 if (res->num_clauses) {
616 for (int i = 0; i < header->num_clauses; ++i) {
617 MonoExceptionClause *clause = &res->clauses [i];
618 if (clause->flags != MONO_EXCEPTION_CLAUSE_NONE)
620 clause->data.catch_class = mono_class_inflate_generic_class_checked (clause->data.catch_class, context, error);
632 * token is the method_ref/def/spec token used in a call IL instruction.
633 * @deprecated use the _checked variant
634 * Notes: runtime code MUST not use this function
637 mono_method_get_signature_full (MonoMethod *method, MonoImage *image, guint32 token, MonoGenericContext *context)
640 MonoMethodSignature *res = mono_method_get_signature_checked (method, image, token, context, &error);
641 mono_error_cleanup (&error);
646 mono_method_get_signature_checked (MonoMethod *method, MonoImage *image, guint32 token, MonoGenericContext *context, MonoError *error)
648 int table = mono_metadata_token_table (token);
649 int idx = mono_metadata_token_index (token);
651 guint32 cols [MONO_MEMBERREF_SIZE];
652 MonoMethodSignature *sig;
655 mono_error_init (error);
657 /* !table is for wrappers: we should really assign their own token to them */
658 if (!table || table == MONO_TABLE_METHOD)
659 return mono_method_signature_checked (method, error);
661 if (table == MONO_TABLE_METHODSPEC) {
662 /* the verifier (do_invoke_method) will turn the NULL into a verifier error */
663 if ((method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) || !method->is_inflated) {
664 mono_error_set_bad_image (error, image, "Method is a pinvoke or open generic");
668 return mono_method_signature_checked (method, error);
671 if (method->klass->generic_class)
672 return mono_method_signature_checked (method, error);
674 if (image_is_dynamic (image)) {
675 sig = mono_reflection_lookup_signature (image, method, token, error);
679 mono_metadata_decode_row (&image->tables [MONO_TABLE_MEMBERREF], idx-1, cols, MONO_MEMBERREF_SIZE);
680 sig_idx = cols [MONO_MEMBERREF_SIGNATURE];
682 sig = (MonoMethodSignature *)find_cached_memberref_sig (image, sig_idx);
684 if (!mono_verifier_verify_memberref_method_signature (image, sig_idx, NULL)) {
685 guint32 klass = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
686 const char *fname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
688 //FIXME include the verification error
689 mono_error_set_bad_image (error, image, "Bad method signature class token 0x%08x field name %s token 0x%08x", klass, fname, token);
693 ptr = mono_metadata_blob_heap (image, sig_idx);
694 mono_metadata_decode_blob_size (ptr, &ptr);
696 sig = mono_metadata_parse_method_signature_full (image, NULL, 0, ptr, NULL, error);
700 sig = (MonoMethodSignature *)cache_memberref_sig (image, sig_idx, sig);
702 /* FIXME: we probably should verify signature compat in the dynamic case too*/
703 if (!mono_verifier_is_sig_compatible (image, method, sig)) {
704 guint32 klass = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
705 const char *fname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
707 mono_error_set_bad_image (error, image, "Incompatible method signature class token 0x%08x field name %s token 0x%08x", klass, fname, token);
713 MonoMethodSignature *cached;
715 /* This signature is not owned by a MonoMethod, so need to cache */
716 sig = inflate_generic_signature_checked (image, sig, context, error);
717 if (!mono_error_ok (error))
720 cached = mono_metadata_get_inflated_signature (sig, context);
722 mono_metadata_free_inflated_signature (sig);
724 inflated_signatures_size += mono_metadata_signature_size (cached);
728 g_assert (mono_error_ok (error));
733 * token is the method_ref/def/spec token used in a call IL instruction.
734 * @deprecated use the _checked variant
735 * Notes: runtime code MUST not use this function
738 mono_method_get_signature (MonoMethod *method, MonoImage *image, guint32 token)
741 MonoMethodSignature *res = mono_method_get_signature_checked (method, image, token, NULL, &error);
742 mono_error_cleanup (&error);
746 /* this is only for the typespec array methods */
748 mono_method_search_in_array_class (MonoClass *klass, const char *name, MonoMethodSignature *sig)
752 mono_class_setup_methods (klass);
753 g_assert (!mono_class_has_failure (klass)); /*FIXME this should not fail, right?*/
754 for (i = 0; i < klass->method.count; ++i) {
755 MonoMethod *method = klass->methods [i];
756 if (strcmp (method->name, name) == 0 && sig->param_count == method->signature->param_count)
763 method_from_memberref (MonoImage *image, guint32 idx, MonoGenericContext *typespec_context,
764 gboolean *used_context, MonoError *error)
766 MonoClass *klass = NULL;
767 MonoMethod *method = NULL;
768 MonoTableInfo *tables = image->tables;
770 guint32 nindex, class_index, sig_idx;
772 MonoMethodSignature *sig;
775 mono_error_init (error);
777 mono_metadata_decode_row (&tables [MONO_TABLE_MEMBERREF], idx-1, cols, 3);
778 nindex = cols [MONO_MEMBERREF_CLASS] >> MONO_MEMBERREF_PARENT_BITS;
779 class_index = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
780 /*g_print ("methodref: 0x%x 0x%x %s\n", class, nindex,
781 mono_metadata_string_heap (m, cols [MONO_MEMBERREF_NAME]));*/
783 mname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
786 * Whether we actually used the `typespec_context' or not.
787 * This is used to tell our caller whether or not it's safe to insert the returned
788 * method into a cache.
791 *used_context = class_index == MONO_MEMBERREF_PARENT_TYPESPEC;
793 switch (class_index) {
794 case MONO_MEMBERREF_PARENT_TYPEREF:
795 klass = mono_class_from_typeref_checked (image, MONO_TOKEN_TYPE_REF | nindex, error);
799 case MONO_MEMBERREF_PARENT_TYPESPEC:
801 * Parse the TYPESPEC in the parent's context.
803 klass = mono_class_get_and_inflate_typespec_checked (image, MONO_TOKEN_TYPE_SPEC | nindex, typespec_context, error);
807 case MONO_MEMBERREF_PARENT_TYPEDEF:
808 klass = mono_class_get_checked (image, MONO_TOKEN_TYPE_DEF | nindex, error);
812 case MONO_MEMBERREF_PARENT_METHODDEF: {
813 method = mono_get_method_checked (image, MONO_TOKEN_METHOD_DEF | nindex, NULL, NULL, error);
819 mono_error_set_bad_image (error, image, "Memberref parent unknown: class: %d, index %d", class_index, nindex);
824 mono_class_init (klass);
826 sig_idx = cols [MONO_MEMBERREF_SIGNATURE];
828 if (!mono_verifier_verify_memberref_method_signature (image, sig_idx, NULL)) {
829 mono_error_set_method_load (error, klass, mname, "Verifier rejected method signature");
833 ptr = mono_metadata_blob_heap (image, sig_idx);
834 mono_metadata_decode_blob_size (ptr, &ptr);
836 sig = (MonoMethodSignature *)find_cached_memberref_sig (image, sig_idx);
838 sig = mono_metadata_parse_method_signature_full (image, NULL, 0, ptr, NULL, error);
842 sig = (MonoMethodSignature *)cache_memberref_sig (image, sig_idx, sig);
845 switch (class_index) {
846 case MONO_MEMBERREF_PARENT_TYPEREF:
847 case MONO_MEMBERREF_PARENT_TYPEDEF:
848 method = find_method (klass, NULL, mname, sig, klass, error);
851 case MONO_MEMBERREF_PARENT_TYPESPEC: {
854 type = &klass->byval_arg;
856 if (type->type != MONO_TYPE_ARRAY && type->type != MONO_TYPE_SZARRAY) {
857 MonoClass *in_class = klass->generic_class ? klass->generic_class->container_class : klass;
858 method = find_method (in_class, NULL, mname, sig, klass, error);
862 /* we're an array and we created these methods already in klass in mono_class_init () */
863 method = mono_method_search_in_array_class (klass, mname, sig);
867 mono_error_set_bad_image (error, image,"Memberref parent unknown: class: %d, index %d", class_index, nindex);
871 if (!method && mono_error_ok (error)) {
872 char *msig = mono_signature_get_desc (sig, FALSE);
873 GString *s = g_string_new (mname);
874 if (sig->generic_param_count)
875 g_string_append_printf (s, "<[%d]>", sig->generic_param_count);
876 g_string_append_printf (s, "(%s)", msig);
878 msig = g_string_free (s, FALSE);
880 mono_error_set_method_load (error, klass, mname, "Could not find method %s", msig);
888 g_assert (!mono_error_ok (error));
893 method_from_methodspec (MonoImage *image, MonoGenericContext *context, guint32 idx, MonoError *error)
897 MonoTableInfo *tables = image->tables;
898 MonoGenericContext new_context;
899 MonoGenericInst *inst;
901 guint32 cols [MONO_METHODSPEC_SIZE];
902 guint32 token, nindex, param_count;
904 mono_error_init (error);
906 mono_metadata_decode_row (&tables [MONO_TABLE_METHODSPEC], idx - 1, cols, MONO_METHODSPEC_SIZE);
907 token = cols [MONO_METHODSPEC_METHOD];
908 nindex = token >> MONO_METHODDEFORREF_BITS;
910 if (!mono_verifier_verify_methodspec_signature (image, cols [MONO_METHODSPEC_SIGNATURE], NULL)) {
911 mono_error_set_bad_image (error, image, "Bad method signals signature 0x%08x", idx);
915 ptr = mono_metadata_blob_heap (image, cols [MONO_METHODSPEC_SIGNATURE]);
917 mono_metadata_decode_value (ptr, &ptr);
919 param_count = mono_metadata_decode_value (ptr, &ptr);
921 inst = mono_metadata_parse_generic_inst (image, NULL, param_count, ptr, &ptr, error);
925 if (context && inst->is_open) {
926 inst = mono_metadata_inflate_generic_inst (inst, context, error);
927 if (!mono_error_ok (error))
931 if ((token & MONO_METHODDEFORREF_MASK) == MONO_METHODDEFORREF_METHODDEF) {
932 method = mono_get_method_checked (image, MONO_TOKEN_METHOD_DEF | nindex, NULL, context, error);
936 method = method_from_memberref (image, nindex, context, NULL, error);
942 klass = method->klass;
944 if (klass->generic_class) {
945 g_assert (method->is_inflated);
946 method = ((MonoMethodInflated *) method)->declaring;
949 new_context.class_inst = klass->generic_class ? klass->generic_class->context.class_inst : NULL;
950 new_context.method_inst = inst;
952 method = mono_class_inflate_generic_method_full_checked (method, klass, &new_context, error);
964 static MonoDllMap *global_dll_map;
967 mono_dllmap_lookup_list (MonoDllMap *dll_map, const char *dll, const char* func, const char **rdll, const char **rfunc) {
975 global_loader_data_lock ();
978 * we use the first entry we find that matches, since entries from
979 * the config file are prepended to the list and we document that the
982 for (; dll_map; dll_map = dll_map->next) {
983 if (dll_map->dll [0] == 'i' && dll_map->dll [1] == ':') {
984 if (g_ascii_strcasecmp (dll_map->dll + 2, dll))
986 } else if (strcmp (dll_map->dll, dll)) {
989 if (!found && dll_map->target) {
990 *rdll = dll_map->target;
992 /* we don't quit here, because we could find a full
993 * entry that matches also function and that has priority.
996 if (dll_map->func && strcmp (dll_map->func, func) == 0) {
997 *rfunc = dll_map->target_func;
1002 global_loader_data_unlock ();
1007 mono_dllmap_lookup (MonoImage *assembly, const char *dll, const char* func, const char **rdll, const char **rfunc)
1010 if (assembly && assembly->dll_map) {
1011 res = mono_dllmap_lookup_list (assembly->dll_map, dll, func, rdll, rfunc);
1015 return mono_dllmap_lookup_list (global_dll_map, dll, func, rdll, rfunc);
1019 * mono_dllmap_insert:
1020 * @assembly: if NULL, this is a global mapping, otherwise the remapping of the dynamic library will only apply to the specified assembly
1021 * @dll: The name of the external library, as it would be found in the DllImport declaration. If prefixed with 'i:' the matching of the library name is done without case sensitivity
1022 * @func: if not null, the mapping will only applied to the named function (the value of EntryPoint)
1023 * @tdll: The name of the library to map the specified @dll if it matches.
1024 * @tfunc: if func is not NULL, the name of the function that replaces the invocation
1026 * LOCKING: Acquires the loader lock.
1028 * This function is used to programatically add DllImport remapping in either
1029 * a specific assembly, or as a global remapping. This is done by remapping
1030 * references in a DllImport attribute from the @dll library name into the @tdll
1031 * name. If the @dll name contains the prefix "i:", the comparison of the
1032 * library name is done without case sensitivity.
1034 * If you pass @func, this is the name of the EntryPoint in a DllImport if specified
1035 * or the name of the function as determined by DllImport. If you pass @func, you
1036 * must also pass @tfunc which is the name of the target function to invoke on a match.
1039 * mono_dllmap_insert (NULL, "i:libdemo.dll", NULL, relocated_demo_path, NULL);
1041 * The above will remap DllImport statments for "libdemo.dll" and "LIBDEMO.DLL" to
1042 * the contents of relocated_demo_path for all assemblies in the Mono process.
1044 * NOTE: This can be called before the runtime is initialized, for example from
1045 * mono_config_parse ().
1048 mono_dllmap_insert (MonoImage *assembly, const char *dll, const char *func, const char *tdll, const char *tfunc)
1052 mono_loader_init ();
1055 entry = (MonoDllMap *)g_malloc0 (sizeof (MonoDllMap));
1056 entry->dll = dll? g_strdup (dll): NULL;
1057 entry->target = tdll? g_strdup (tdll): NULL;
1058 entry->func = func? g_strdup (func): NULL;
1059 entry->target_func = tfunc? g_strdup (tfunc): NULL;
1061 global_loader_data_lock ();
1062 entry->next = global_dll_map;
1063 global_dll_map = entry;
1064 global_loader_data_unlock ();
1066 entry = (MonoDllMap *)mono_image_alloc0 (assembly, sizeof (MonoDllMap));
1067 entry->dll = dll? mono_image_strdup (assembly, dll): NULL;
1068 entry->target = tdll? mono_image_strdup (assembly, tdll): NULL;
1069 entry->func = func? mono_image_strdup (assembly, func): NULL;
1070 entry->target_func = tfunc? mono_image_strdup (assembly, tfunc): NULL;
1072 mono_image_lock (assembly);
1073 entry->next = assembly->dll_map;
1074 assembly->dll_map = entry;
1075 mono_image_unlock (assembly);
1080 free_dllmap (MonoDllMap *map)
1083 MonoDllMap *next = map->next;
1086 g_free (map->target);
1088 g_free (map->target_func);
1095 dllmap_cleanup (void)
1097 free_dllmap (global_dll_map);
1098 global_dll_map = NULL;
1101 static GHashTable *global_module_map;
1104 cached_module_load (const char *name, int flags, char **err)
1110 global_loader_data_lock ();
1111 if (!global_module_map)
1112 global_module_map = g_hash_table_new (g_str_hash, g_str_equal);
1113 res = (MonoDl *)g_hash_table_lookup (global_module_map, name);
1115 global_loader_data_unlock ();
1118 res = mono_dl_open (name, flags, err);
1120 g_hash_table_insert (global_module_map, g_strdup (name), res);
1121 global_loader_data_unlock ();
1125 static MonoDl *internal_module;
1128 is_absolute_path (const char *path)
1130 #ifdef PLATFORM_MACOSX
1131 if (!strncmp (path, "@executable_path/", 17) || !strncmp (path, "@loader_path/", 13) ||
1132 !strncmp (path, "@rpath/", 7))
1135 return g_path_is_absolute (path);
1139 mono_lookup_pinvoke_call (MonoMethod *method, const char **exc_class, const char **exc_arg)
1141 MonoImage *image = method->klass->image;
1142 MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *)method;
1143 MonoTableInfo *tables = image->tables;
1144 MonoTableInfo *im = &tables [MONO_TABLE_IMPLMAP];
1145 MonoTableInfo *mr = &tables [MONO_TABLE_MODULEREF];
1146 guint32 im_cols [MONO_IMPLMAP_SIZE];
1147 guint32 scope_token;
1148 const char *import = NULL;
1149 const char *orig_scope;
1150 const char *new_scope;
1152 char *full_name, *file_name, *found_name = NULL;
1154 MonoDl *module = NULL;
1155 gboolean cached = FALSE;
1157 g_assert (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL);
1165 return piinfo->addr;
1167 if (image_is_dynamic (method->klass->image)) {
1168 MonoReflectionMethodAux *method_aux =
1169 (MonoReflectionMethodAux *)g_hash_table_lookup (
1170 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
1174 import = method_aux->dllentry;
1175 orig_scope = method_aux->dll;
1178 if (!piinfo->implmap_idx || piinfo->implmap_idx > im->rows)
1181 mono_metadata_decode_row (im, piinfo->implmap_idx - 1, im_cols, MONO_IMPLMAP_SIZE);
1183 if (!im_cols [MONO_IMPLMAP_SCOPE] || im_cols [MONO_IMPLMAP_SCOPE] > mr->rows)
1186 piinfo->piflags = im_cols [MONO_IMPLMAP_FLAGS];
1187 import = mono_metadata_string_heap (image, im_cols [MONO_IMPLMAP_NAME]);
1188 scope_token = mono_metadata_decode_row_col (mr, im_cols [MONO_IMPLMAP_SCOPE] - 1, MONO_MODULEREF_NAME);
1189 orig_scope = mono_metadata_string_heap (image, scope_token);
1192 mono_dllmap_lookup (image, orig_scope, import, &new_scope, &import);
1195 mono_image_lock (image);
1196 if (!image->pinvoke_scopes) {
1197 image->pinvoke_scopes = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL);
1198 image->pinvoke_scope_filenames = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
1200 module = (MonoDl *)g_hash_table_lookup (image->pinvoke_scopes, new_scope);
1201 found_name = (char *)g_hash_table_lookup (image->pinvoke_scope_filenames, new_scope);
1202 mono_image_unlock (image);
1206 found_name = g_strdup (found_name);
1210 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1211 "DllImport attempting to load: '%s'.", new_scope);
1213 /* we allow a special name to dlopen from the running process namespace */
1214 if (strcmp (new_scope, "__Internal") == 0){
1215 if (internal_module == NULL)
1216 internal_module = mono_dl_open (NULL, MONO_DL_LAZY, &error_msg);
1217 module = internal_module;
1222 * Try loading the module using a variety of names
1224 for (i = 0; i < 5; ++i) {
1225 char *base_name = NULL, *dir_name = NULL;
1226 gboolean is_absolute = is_absolute_path (new_scope);
1230 /* Try the original name */
1231 file_name = g_strdup (new_scope);
1234 /* Try trimming the .dll extension */
1235 if (strstr (new_scope, ".dll") == (new_scope + strlen (new_scope) - 4)) {
1236 file_name = g_strdup (new_scope);
1237 file_name [strlen (new_scope) - 4] = '\0';
1244 dir_name = g_path_get_dirname (new_scope);
1245 base_name = g_path_get_basename (new_scope);
1246 if (strstr (base_name, "lib") != base_name) {
1247 char *tmp = g_strdup_printf ("lib%s", base_name);
1250 file_name = g_strdup_printf ("%s%s%s", dir_name, G_DIR_SEPARATOR_S, base_name);
1253 } else if (strstr (new_scope, "lib") != new_scope) {
1254 file_name = g_strdup_printf ("lib%s", new_scope);
1259 if (!is_absolute && mono_dl_get_system_dir ()) {
1260 dir_name = (char*)mono_dl_get_system_dir ();
1261 file_name = g_path_get_basename (new_scope);
1267 #ifndef TARGET_WIN32
1268 if (!g_ascii_strcasecmp ("user32.dll", new_scope) ||
1269 !g_ascii_strcasecmp ("kernel32.dll", new_scope) ||
1270 !g_ascii_strcasecmp ("user32", new_scope) ||
1271 !g_ascii_strcasecmp ("kernel", new_scope)) {
1272 file_name = g_strdup ("libMonoSupportW.so");
1276 #ifndef TARGET_WIN32
1283 dir_name = g_path_get_dirname (file_name);
1285 base_name = g_path_get_basename (file_name);
1288 if (!module && is_absolute) {
1289 module = cached_module_load (file_name, MONO_DL_LAZY, &error_msg);
1291 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1292 "DllImport error loading library '%s': '%s'.",
1293 file_name, error_msg);
1296 found_name = g_strdup (file_name);
1300 if (!module && !is_absolute) {
1304 for (j = 0; j < 3; ++j) {
1309 mdirname = g_path_get_dirname (image->name);
1311 case 1: /* @executable_path@/../lib */
1315 binl = mono_dl_get_executable_path (buf, sizeof (buf));
1317 char *base, *newbase;
1320 resolvedname = mono_path_resolve_symlinks (buf);
1322 base = g_path_get_dirname (resolvedname);
1323 newbase = g_path_get_dirname(base);
1324 mdirname = g_strdup_printf ("%s/lib", newbase);
1326 g_free (resolvedname);
1333 case 2: /* @executable_path@/../Libraries */
1337 binl = mono_dl_get_executable_path (buf, sizeof (buf));
1339 char *base, *newbase;
1342 resolvedname = mono_path_resolve_symlinks (buf);
1344 base = g_path_get_dirname (resolvedname);
1345 newbase = g_path_get_dirname(base);
1346 mdirname = g_strdup_printf ("%s/Libraries", newbase);
1348 g_free (resolvedname);
1360 while ((full_name = mono_dl_build_path (mdirname, file_name, &iter))) {
1361 module = cached_module_load (full_name, MONO_DL_LAZY, &error_msg);
1363 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1364 "DllImport error loading library '%s': '%s'.",
1365 full_name, error_msg);
1368 found_name = g_strdup (full_name);
1384 char *file_or_base = is_absolute ? base_name : file_name;
1385 while ((full_name = mono_dl_build_path (dir_name, file_or_base, &iter))) {
1386 module = cached_module_load (full_name, MONO_DL_LAZY, &error_msg);
1388 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1389 "DllImport error loading library '%s': '%s'.",
1390 full_name, error_msg);
1393 found_name = g_strdup (full_name);
1402 module = cached_module_load (file_name, MONO_DL_LAZY, &error_msg);
1404 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1405 "DllImport error loading library '%s': '%s'.",
1406 file_name, error_msg);
1408 found_name = g_strdup (file_name);
1423 mono_trace (G_LOG_LEVEL_WARNING, MONO_TRACE_DLLIMPORT,
1424 "DllImport unable to load library '%s'.",
1429 *exc_class = "DllNotFoundException";
1430 *exc_arg = new_scope;
1436 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1437 "DllImport loaded library '%s'.", found_name);
1438 mono_image_lock (image);
1439 if (!g_hash_table_lookup (image->pinvoke_scopes, new_scope)) {
1440 g_hash_table_insert (image->pinvoke_scopes, g_strdup (new_scope), module);
1441 g_hash_table_insert (image->pinvoke_scope_filenames, g_strdup (new_scope), g_strdup (found_name));
1443 mono_image_unlock (image);
1446 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1447 "DllImport searching in: '%s' ('%s').", new_scope, found_name);
1448 g_free (found_name);
1451 if (import && import [0] == '#' && isdigit (import [1])) {
1455 id = strtol (import + 1, &end, 10);
1456 if (id > 0 && *end == '\0')
1460 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1461 "Searching for '%s'.", import);
1463 if (piinfo->piflags & PINVOKE_ATTRIBUTE_NO_MANGLE) {
1464 error_msg = mono_dl_symbol (module, import, &piinfo->addr);
1466 char *mangled_name = NULL, *mangled_name2 = NULL;
1469 int mangle_param_count;
1475 * Search using a variety of mangled names
1477 for (mangle_charset = 0; mangle_charset <= 1; mangle_charset ++) {
1478 for (mangle_stdcall = 0; mangle_stdcall <= 1; mangle_stdcall ++) {
1479 gboolean need_param_count = FALSE;
1481 if (mangle_stdcall > 0)
1482 need_param_count = TRUE;
1484 for (mangle_param_count = 0; mangle_param_count <= (need_param_count ? 256 : 0); mangle_param_count += 4) {
1489 mangled_name = (char*)import;
1490 switch (piinfo->piflags & PINVOKE_ATTRIBUTE_CHAR_SET_MASK) {
1491 case PINVOKE_ATTRIBUTE_CHAR_SET_UNICODE:
1492 /* Try the mangled name first */
1493 if (mangle_charset == 0)
1494 mangled_name = g_strconcat (import, "W", NULL);
1496 case PINVOKE_ATTRIBUTE_CHAR_SET_AUTO:
1498 if (mangle_charset == 0)
1499 mangled_name = g_strconcat (import, "W", NULL);
1501 /* Try the mangled name last */
1502 if (mangle_charset == 1)
1503 mangled_name = g_strconcat (import, "A", NULL);
1506 case PINVOKE_ATTRIBUTE_CHAR_SET_ANSI:
1508 /* Try the mangled name last */
1509 if (mangle_charset == 1)
1510 mangled_name = g_strconcat (import, "A", NULL);
1515 if (mangle_param_count == 0)
1516 param_count = mono_method_signature (method)->param_count * sizeof (gpointer);
1518 /* Try brute force, since it would be very hard to compute the stack usage correctly */
1519 param_count = mangle_param_count;
1521 /* Try the stdcall mangled name */
1523 * gcc under windows creates mangled names without the underscore, but MS.NET
1524 * doesn't support it, so we doesn't support it either.
1526 if (mangle_stdcall == 1)
1527 mangled_name2 = g_strdup_printf ("_%s@%d", mangled_name, param_count);
1529 mangled_name2 = mangled_name;
1531 mangled_name2 = mangled_name;
1534 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1535 "Probing '%s'.", mangled_name2);
1537 error_msg = mono_dl_symbol (module, mangled_name2, &piinfo->addr);
1540 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1541 "Found as '%s'.", mangled_name2);
1543 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1544 "Could not find '%s' due to '%s'.", mangled_name2, error_msg);
1549 if (mangled_name != mangled_name2)
1550 g_free (mangled_name2);
1551 if (mangled_name != import)
1552 g_free (mangled_name);
1558 if (!piinfo->addr) {
1561 *exc_class = "EntryPointNotFoundException";
1566 return piinfo->addr;
1570 * LOCKING: assumes the loader lock to be taken.
1573 mono_get_method_from_token (MonoImage *image, guint32 token, MonoClass *klass,
1574 MonoGenericContext *context, gboolean *used_context, MonoError *error)
1577 int table = mono_metadata_token_table (token);
1578 int idx = mono_metadata_token_index (token);
1579 MonoTableInfo *tables = image->tables;
1580 MonoGenericContainer *generic_container = NULL, *container = NULL;
1581 const char *sig = NULL;
1582 guint32 cols [MONO_TYPEDEF_SIZE];
1584 mono_error_init (error);
1586 if (image_is_dynamic (image)) {
1587 MonoClass *handle_class;
1589 result = (MonoMethod *)mono_lookup_dynamic_token_class (image, token, TRUE, &handle_class, context, error);
1590 mono_error_assert_ok (error);
1592 // This checks the memberref type as well
1593 if (result && handle_class != mono_defaults.methodhandle_class) {
1594 mono_error_set_bad_image (error, image, "Bad method token 0x%08x on dynamic image", token);
1600 if (table != MONO_TABLE_METHOD) {
1601 if (table == MONO_TABLE_METHODSPEC) {
1602 if (used_context) *used_context = TRUE;
1603 return method_from_methodspec (image, context, idx, error);
1605 if (table != MONO_TABLE_MEMBERREF) {
1606 mono_error_set_bad_image (error, image, "Bad method token 0x%08x.", token);
1609 return method_from_memberref (image, idx, context, used_context, error);
1612 if (used_context) *used_context = FALSE;
1614 if (idx > image->tables [MONO_TABLE_METHOD].rows) {
1615 mono_error_set_bad_image (error, image, "Bad method token 0x%08x (out of bounds).", token);
1620 guint32 type = mono_metadata_typedef_from_method (image, token);
1622 mono_error_set_bad_image (error, image, "Bad method token 0x%08x (could not find corresponding typedef).", token);
1625 klass = mono_class_get_checked (image, MONO_TOKEN_TYPE_DEF | type, error);
1630 mono_metadata_decode_row (&image->tables [MONO_TABLE_METHOD], idx - 1, cols, 6);
1632 if ((cols [2] & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
1633 (cols [1] & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL)) {
1634 result = (MonoMethod *)mono_image_alloc0 (image, sizeof (MonoMethodPInvoke));
1636 result = (MonoMethod *)mono_image_alloc0 (image, sizeof (MonoMethod));
1637 methods_size += sizeof (MonoMethod);
1640 mono_stats.method_count ++;
1643 result->klass = klass;
1644 result->flags = cols [2];
1645 result->iflags = cols [1];
1646 result->token = token;
1647 result->name = mono_metadata_string_heap (image, cols [3]);
1649 if (!sig) /* already taken from the methodref */
1650 sig = mono_metadata_blob_heap (image, cols [4]);
1651 /* size = */ mono_metadata_decode_blob_size (sig, &sig);
1653 container = klass->generic_container;
1656 * load_generic_params does a binary search so only call it if the method
1660 generic_container = mono_metadata_load_generic_params (image, token, container);
1662 if (generic_container) {
1663 result->is_generic = TRUE;
1664 generic_container->owner.method = result;
1665 generic_container->is_anonymous = FALSE; // Method is now known, container is no longer anonymous
1666 /*FIXME put this before the image alloc*/
1667 if (!mono_metadata_load_generic_param_constraints_checked (image, token, generic_container, error))
1670 container = generic_container;
1673 if (cols [1] & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) {
1674 if (result->klass == mono_defaults.string_class && !strcmp (result->name, ".ctor"))
1675 result->string_ctor = 1;
1676 } else if (cols [2] & METHOD_ATTRIBUTE_PINVOKE_IMPL) {
1677 MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *)result;
1680 /* IJW is P/Invoke with a predefined function pointer. */
1681 if (image->is_module_handle && (cols [1] & METHOD_IMPL_ATTRIBUTE_NATIVE)) {
1682 piinfo->addr = mono_image_rva_map (image, cols [0]);
1683 g_assert (piinfo->addr);
1686 piinfo->implmap_idx = mono_metadata_implmap_from_method (image, idx - 1);
1687 /* Native methods can have no map. */
1688 if (piinfo->implmap_idx)
1689 piinfo->piflags = mono_metadata_decode_row_col (&tables [MONO_TABLE_IMPLMAP], piinfo->implmap_idx - 1, MONO_IMPLMAP_FLAGS);
1692 if (generic_container)
1693 mono_method_set_generic_container (result, generic_container);
1699 mono_get_method (MonoImage *image, guint32 token, MonoClass *klass)
1702 MonoMethod *result = mono_get_method_checked (image, token, klass, NULL, &error);
1703 mono_error_cleanup (&error);
1708 mono_get_method_full (MonoImage *image, guint32 token, MonoClass *klass,
1709 MonoGenericContext *context)
1712 MonoMethod *result = mono_get_method_checked (image, token, klass, context, &error);
1713 mono_error_cleanup (&error);
1718 mono_get_method_checked (MonoImage *image, guint32 token, MonoClass *klass, MonoGenericContext *context, MonoError *error)
1720 MonoMethod *result = NULL;
1721 gboolean used_context = FALSE;
1723 /* We do everything inside the lock to prevent creation races */
1725 mono_error_init (error);
1727 mono_image_lock (image);
1729 if (mono_metadata_token_table (token) == MONO_TABLE_METHOD) {
1730 if (!image->method_cache)
1731 image->method_cache = g_hash_table_new (NULL, NULL);
1732 result = (MonoMethod *)g_hash_table_lookup (image->method_cache, GINT_TO_POINTER (mono_metadata_token_index (token)));
1733 } else if (!image_is_dynamic (image)) {
1734 if (!image->methodref_cache)
1735 image->methodref_cache = g_hash_table_new (NULL, NULL);
1736 result = (MonoMethod *)g_hash_table_lookup (image->methodref_cache, GINT_TO_POINTER (token));
1738 mono_image_unlock (image);
1744 result = mono_get_method_from_token (image, token, klass, context, &used_context, error);
1748 mono_image_lock (image);
1749 if (!used_context && !result->is_inflated) {
1750 MonoMethod *result2 = NULL;
1752 if (mono_metadata_token_table (token) == MONO_TABLE_METHOD)
1753 result2 = (MonoMethod *)g_hash_table_lookup (image->method_cache, GINT_TO_POINTER (mono_metadata_token_index (token)));
1754 else if (!image_is_dynamic (image))
1755 result2 = (MonoMethod *)g_hash_table_lookup (image->methodref_cache, GINT_TO_POINTER (token));
1758 mono_image_unlock (image);
1762 if (mono_metadata_token_table (token) == MONO_TABLE_METHOD)
1763 g_hash_table_insert (image->method_cache, GINT_TO_POINTER (mono_metadata_token_index (token)), result);
1764 else if (!image_is_dynamic (image))
1765 g_hash_table_insert (image->methodref_cache, GINT_TO_POINTER (token), result);
1768 mono_image_unlock (image);
1774 get_method_constrained (MonoImage *image, MonoMethod *method, MonoClass *constrained_class, MonoGenericContext *context, MonoError *error)
1777 MonoClass *ic = NULL;
1778 MonoGenericContext *method_context = NULL;
1779 MonoMethodSignature *sig, *original_sig;
1781 mono_error_init (error);
1783 mono_class_init (constrained_class);
1784 original_sig = sig = mono_method_signature_checked (method, error);
1789 if (method->is_inflated && sig->generic_param_count) {
1790 MonoMethodInflated *imethod = (MonoMethodInflated *) method;
1791 sig = mono_method_signature_checked (imethod->declaring, error); /*We assume that if the inflated method signature is valid, the declaring method is too*/
1794 method_context = mono_method_get_context (method);
1798 * We must inflate the signature with the class instantiation to work on
1799 * cases where a class inherit from a generic type and the override replaces
1800 * any type argument which a concrete type. See #325283.
1802 if (method_context->class_inst) {
1803 MonoGenericContext ctx;
1804 ctx.method_inst = NULL;
1805 ctx.class_inst = method_context->class_inst;
1806 /*Fixme, property propagate this error*/
1807 sig = inflate_generic_signature_checked (method->klass->image, sig, &ctx, error);
1813 if ((constrained_class != method->klass) && (MONO_CLASS_IS_INTERFACE (method->klass)))
1816 result = find_method (constrained_class, ic, method->name, sig, constrained_class, error);
1817 if (sig != original_sig)
1818 mono_metadata_free_inflated_signature (sig);
1823 if (method_context) {
1824 result = mono_class_inflate_generic_method_checked (result, method_context, error);
1833 mono_get_method_constrained_with_method (MonoImage *image, MonoMethod *method, MonoClass *constrained_class,
1834 MonoGenericContext *context, MonoError *error)
1838 return get_method_constrained (image, method, constrained_class, context, error);
1842 * mono_get_method_constrained:
1844 * This is used when JITing the `constrained.' opcode.
1846 * This returns two values: the contrained method, which has been inflated
1847 * as the function return value; And the original CIL-stream method as
1848 * declared in cil_method. The later is used for verification.
1851 mono_get_method_constrained (MonoImage *image, guint32 token, MonoClass *constrained_class,
1852 MonoGenericContext *context, MonoMethod **cil_method)
1855 MonoMethod *result = mono_get_method_constrained_checked (image, token, constrained_class, context, cil_method, &error);
1856 mono_error_cleanup (&error);
1861 mono_get_method_constrained_checked (MonoImage *image, guint32 token, MonoClass *constrained_class, MonoGenericContext *context, MonoMethod **cil_method, MonoError *error)
1863 mono_error_init (error);
1865 *cil_method = mono_get_method_from_token (image, token, NULL, context, NULL, error);
1869 return get_method_constrained (image, *cil_method, constrained_class, context, error);
1873 mono_free_method (MonoMethod *method)
1875 if (mono_profiler_get_events () & MONO_PROFILE_METHOD_EVENTS)
1876 mono_profiler_method_free (method);
1878 /* FIXME: This hack will go away when the profiler will support freeing methods */
1879 if (mono_profiler_get_events () != MONO_PROFILE_NONE)
1882 if (method->signature) {
1884 * FIXME: This causes crashes because the types inside signatures and
1885 * locals are shared.
1887 /* mono_metadata_free_method_signature (method->signature); */
1888 /* g_free (method->signature); */
1891 if (method_is_dynamic (method)) {
1892 MonoMethodWrapper *mw = (MonoMethodWrapper*)method;
1895 mono_marshal_free_dynamic_wrappers (method);
1897 mono_image_property_remove (method->klass->image, method);
1899 g_free ((char*)method->name);
1901 g_free ((char*)mw->header->code);
1902 for (i = 0; i < mw->header->num_locals; ++i)
1903 g_free (mw->header->locals [i]);
1904 g_free (mw->header->clauses);
1905 g_free (mw->header);
1907 g_free (mw->method_data);
1908 g_free (method->signature);
1914 mono_method_get_param_names (MonoMethod *method, const char **names)
1918 MonoTableInfo *methodt;
1919 MonoTableInfo *paramt;
1920 MonoMethodSignature *signature;
1923 if (method->is_inflated)
1924 method = ((MonoMethodInflated *) method)->declaring;
1926 signature = mono_method_signature (method);
1927 /*FIXME this check is somewhat redundant since the caller usally will have to get the signature to figure out the
1928 number of arguments and allocate a properly sized array. */
1929 if (signature == NULL)
1932 if (!signature->param_count)
1935 for (i = 0; i < signature->param_count; ++i)
1938 klass = method->klass;
1942 mono_class_init (klass);
1944 if (image_is_dynamic (klass->image)) {
1945 MonoReflectionMethodAux *method_aux =
1946 (MonoReflectionMethodAux *)g_hash_table_lookup (
1947 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
1948 if (method_aux && method_aux->param_names) {
1949 for (i = 0; i < mono_method_signature (method)->param_count; ++i)
1950 if (method_aux->param_names [i + 1])
1951 names [i] = method_aux->param_names [i + 1];
1956 if (method->wrapper_type) {
1957 char **pnames = NULL;
1959 mono_image_lock (klass->image);
1960 if (klass->image->wrapper_param_names)
1961 pnames = (char **)g_hash_table_lookup (klass->image->wrapper_param_names, method);
1962 mono_image_unlock (klass->image);
1965 for (i = 0; i < signature->param_count; ++i)
1966 names [i] = pnames [i];
1971 methodt = &klass->image->tables [MONO_TABLE_METHOD];
1972 paramt = &klass->image->tables [MONO_TABLE_PARAM];
1973 idx = mono_method_get_index (method);
1975 guint32 cols [MONO_PARAM_SIZE];
1978 param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
1980 if (idx < methodt->rows)
1981 lastp = mono_metadata_decode_row_col (methodt, idx, MONO_METHOD_PARAMLIST);
1983 lastp = paramt->rows + 1;
1984 for (i = param_index; i < lastp; ++i) {
1985 mono_metadata_decode_row (paramt, i -1, cols, MONO_PARAM_SIZE);
1986 if (cols [MONO_PARAM_SEQUENCE] && cols [MONO_PARAM_SEQUENCE] <= signature->param_count) /* skip return param spec and bounds check*/
1987 names [cols [MONO_PARAM_SEQUENCE] - 1] = mono_metadata_string_heap (klass->image, cols [MONO_PARAM_NAME]);
1993 mono_method_get_param_token (MonoMethod *method, int index)
1995 MonoClass *klass = method->klass;
1996 MonoTableInfo *methodt;
1999 mono_class_init (klass);
2001 if (image_is_dynamic (klass->image))
2002 g_assert_not_reached ();
2004 methodt = &klass->image->tables [MONO_TABLE_METHOD];
2005 idx = mono_method_get_index (method);
2007 guint param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
2011 return mono_metadata_make_token (MONO_TABLE_PARAM, 0);
2013 return mono_metadata_make_token (MONO_TABLE_PARAM, param_index + index);
2020 mono_method_get_marshal_info (MonoMethod *method, MonoMarshalSpec **mspecs)
2023 MonoClass *klass = method->klass;
2024 MonoTableInfo *methodt;
2025 MonoTableInfo *paramt;
2026 MonoMethodSignature *signature;
2029 signature = mono_method_signature (method);
2030 g_assert (signature); /*FIXME there is no way to signal error from this function*/
2032 for (i = 0; i < signature->param_count + 1; ++i)
2035 if (image_is_dynamic (method->klass->image)) {
2036 MonoReflectionMethodAux *method_aux =
2037 (MonoReflectionMethodAux *)g_hash_table_lookup (
2038 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
2039 if (method_aux && method_aux->param_marshall) {
2040 MonoMarshalSpec **dyn_specs = method_aux->param_marshall;
2041 for (i = 0; i < signature->param_count + 1; ++i)
2042 if (dyn_specs [i]) {
2043 mspecs [i] = g_new0 (MonoMarshalSpec, 1);
2044 memcpy (mspecs [i], dyn_specs [i], sizeof (MonoMarshalSpec));
2045 mspecs [i]->data.custom_data.custom_name = g_strdup (dyn_specs [i]->data.custom_data.custom_name);
2046 mspecs [i]->data.custom_data.cookie = g_strdup (dyn_specs [i]->data.custom_data.cookie);
2052 mono_class_init (klass);
2054 methodt = &klass->image->tables [MONO_TABLE_METHOD];
2055 paramt = &klass->image->tables [MONO_TABLE_PARAM];
2056 idx = mono_method_get_index (method);
2058 guint32 cols [MONO_PARAM_SIZE];
2059 guint param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
2061 if (idx < methodt->rows)
2062 lastp = mono_metadata_decode_row_col (methodt, idx, MONO_METHOD_PARAMLIST);
2064 lastp = paramt->rows + 1;
2066 for (i = param_index; i < lastp; ++i) {
2067 mono_metadata_decode_row (paramt, i -1, cols, MONO_PARAM_SIZE);
2069 if (cols [MONO_PARAM_FLAGS] & PARAM_ATTRIBUTE_HAS_FIELD_MARSHAL && cols [MONO_PARAM_SEQUENCE] <= signature->param_count) {
2071 tp = mono_metadata_get_marshal_info (klass->image, i - 1, FALSE);
2073 mspecs [cols [MONO_PARAM_SEQUENCE]]= mono_metadata_parse_marshal_spec (klass->image, tp);
2082 mono_method_has_marshal_info (MonoMethod *method)
2085 MonoClass *klass = method->klass;
2086 MonoTableInfo *methodt;
2087 MonoTableInfo *paramt;
2090 if (image_is_dynamic (method->klass->image)) {
2091 MonoReflectionMethodAux *method_aux =
2092 (MonoReflectionMethodAux *)g_hash_table_lookup (
2093 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
2094 MonoMarshalSpec **dyn_specs = method_aux->param_marshall;
2096 for (i = 0; i < mono_method_signature (method)->param_count + 1; ++i)
2103 mono_class_init (klass);
2105 methodt = &klass->image->tables [MONO_TABLE_METHOD];
2106 paramt = &klass->image->tables [MONO_TABLE_PARAM];
2107 idx = mono_method_get_index (method);
2109 guint32 cols [MONO_PARAM_SIZE];
2110 guint param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
2112 if (idx + 1 < methodt->rows)
2113 lastp = mono_metadata_decode_row_col (methodt, idx, MONO_METHOD_PARAMLIST);
2115 lastp = paramt->rows + 1;
2117 for (i = param_index; i < lastp; ++i) {
2118 mono_metadata_decode_row (paramt, i -1, cols, MONO_PARAM_SIZE);
2120 if (cols [MONO_PARAM_FLAGS] & PARAM_ATTRIBUTE_HAS_FIELD_MARSHAL)
2129 mono_method_get_wrapper_data (MonoMethod *method, guint32 id)
2132 g_assert (method != NULL);
2133 g_assert (method->wrapper_type != MONO_WRAPPER_NONE);
2135 if (method->is_inflated)
2136 method = ((MonoMethodInflated *) method)->declaring;
2137 data = (void **)((MonoMethodWrapper *)method)->method_data;
2138 g_assert (data != NULL);
2139 g_assert (id <= GPOINTER_TO_UINT (*data));
2146 } StackWalkUserData;
2149 stack_walk_adapter (MonoStackFrameInfo *frame, MonoContext *ctx, gpointer data)
2151 StackWalkUserData *d = (StackWalkUserData *)data;
2153 switch (frame->type) {
2154 case FRAME_TYPE_DEBUGGER_INVOKE:
2155 case FRAME_TYPE_MANAGED_TO_NATIVE:
2156 case FRAME_TYPE_TRAMPOLINE:
2158 case FRAME_TYPE_MANAGED:
2159 g_assert (frame->ji);
2160 return d->func (frame->actual_method, frame->native_offset, frame->il_offset, frame->managed, d->user_data);
2163 g_assert_not_reached ();
2169 mono_stack_walk (MonoStackWalk func, gpointer user_data)
2171 StackWalkUserData ud = { func, user_data };
2172 mono_get_eh_callbacks ()->mono_walk_stack_with_ctx (stack_walk_adapter, NULL, MONO_UNWIND_LOOKUP_ALL, &ud);
2176 mono_stack_walk_no_il (MonoStackWalk func, gpointer user_data)
2178 StackWalkUserData ud = { func, user_data };
2179 mono_get_eh_callbacks ()->mono_walk_stack_with_ctx (stack_walk_adapter, NULL, MONO_UNWIND_DEFAULT, &ud);
2183 MonoStackWalkAsyncSafe func;
2185 } AsyncStackWalkUserData;
2189 async_stack_walk_adapter (MonoStackFrameInfo *frame, MonoContext *ctx, gpointer data)
2191 AsyncStackWalkUserData *d = (AsyncStackWalkUserData *)data;
2193 switch (frame->type) {
2194 case FRAME_TYPE_DEBUGGER_INVOKE:
2195 case FRAME_TYPE_MANAGED_TO_NATIVE:
2196 case FRAME_TYPE_TRAMPOLINE:
2198 case FRAME_TYPE_MANAGED:
2201 if (frame->ji->async) {
2202 return d->func (NULL, frame->domain, frame->ji->code_start, frame->native_offset, d->user_data);
2204 return d->func (frame->actual_method, frame->domain, frame->ji->code_start, frame->native_offset, d->user_data);
2208 g_assert_not_reached ();
2215 * mono_stack_walk_async_safe:
2217 * Async safe version callable from signal handlers.
2220 mono_stack_walk_async_safe (MonoStackWalkAsyncSafe func, void *initial_sig_context, void *user_data)
2223 AsyncStackWalkUserData ud = { func, user_data };
2225 mono_sigctx_to_monoctx (initial_sig_context, &ctx);
2226 mono_get_eh_callbacks ()->mono_walk_stack_with_ctx (async_stack_walk_adapter, NULL, MONO_UNWIND_SIGNAL_SAFE, &ud);
2230 last_managed (MonoMethod *m, gint no, gint ilo, gboolean managed, gpointer data)
2232 MonoMethod **dest = (MonoMethod **)data;
2234 /*g_print ("In %s::%s [%d] [%d]\n", m->klass->name, m->name, no, ilo);*/
2240 mono_method_get_last_managed (void)
2242 MonoMethod *m = NULL;
2243 mono_stack_walk_no_il (last_managed, &m);
2247 static gboolean loader_lock_track_ownership = FALSE;
2252 * See docs/thread-safety.txt for the locking strategy.
2255 mono_loader_lock (void)
2257 mono_locks_coop_acquire (&loader_mutex, LoaderLock);
2258 if (G_UNLIKELY (loader_lock_track_ownership)) {
2259 mono_native_tls_set_value (loader_lock_nest_id, GUINT_TO_POINTER (GPOINTER_TO_UINT (mono_native_tls_get_value (loader_lock_nest_id)) + 1));
2264 mono_loader_unlock (void)
2266 mono_locks_coop_release (&loader_mutex, LoaderLock);
2267 if (G_UNLIKELY (loader_lock_track_ownership)) {
2268 mono_native_tls_set_value (loader_lock_nest_id, GUINT_TO_POINTER (GPOINTER_TO_UINT (mono_native_tls_get_value (loader_lock_nest_id)) - 1));
2273 * mono_loader_lock_track_ownership:
2275 * Set whenever the runtime should track ownership of the loader lock. If set to TRUE,
2276 * the mono_loader_lock_is_owned_by_self () can be called to query whenever the current
2277 * thread owns the loader lock.
2280 mono_loader_lock_track_ownership (gboolean track)
2282 loader_lock_track_ownership = track;
2286 * mono_loader_lock_is_owned_by_self:
2288 * Return whenever the current thread owns the loader lock.
2289 * This is useful to avoid blocking operations while holding the loader lock.
2292 mono_loader_lock_is_owned_by_self (void)
2294 g_assert (loader_lock_track_ownership);
2296 return GPOINTER_TO_UINT (mono_native_tls_get_value (loader_lock_nest_id)) > 0;
2300 * mono_loader_lock_if_inited:
2302 * Acquire the loader lock if it has been initialized, no-op otherwise. This can
2303 * be used in runtime initialization code which can be executed before mono_loader_init ().
2306 mono_loader_lock_if_inited (void)
2308 if (loader_lock_inited)
2309 mono_loader_lock ();
2313 mono_loader_unlock_if_inited (void)
2315 if (loader_lock_inited)
2316 mono_loader_unlock ();
2320 * mono_method_signature:
2322 * Return the signature of the method M. On failure, returns NULL, and ERR is set.
2324 MonoMethodSignature*
2325 mono_method_signature_checked (MonoMethod *m, MonoError *error)
2330 gboolean can_cache_signature;
2331 MonoGenericContainer *container;
2332 MonoMethodSignature *signature = NULL, *sig2;
2335 /* We need memory barriers below because of the double-checked locking pattern */
2337 mono_error_init (error);
2340 return m->signature;
2342 img = m->klass->image;
2344 if (m->is_inflated) {
2345 MonoMethodInflated *imethod = (MonoMethodInflated *) m;
2346 /* the lock is recursive */
2347 signature = mono_method_signature (imethod->declaring);
2348 signature = inflate_generic_signature_checked (imethod->declaring->klass->image, signature, mono_method_get_context (m), error);
2349 if (!mono_error_ok (error))
2352 inflated_signatures_size += mono_metadata_signature_size (signature);
2354 mono_image_lock (img);
2356 mono_memory_barrier ();
2358 m->signature = signature;
2360 mono_image_unlock (img);
2362 return m->signature;
2365 g_assert (mono_metadata_token_table (m->token) == MONO_TABLE_METHOD);
2366 idx = mono_metadata_token_index (m->token);
2368 sig = mono_metadata_blob_heap (img, sig_offset = mono_metadata_decode_row_col (&img->tables [MONO_TABLE_METHOD], idx - 1, MONO_METHOD_SIGNATURE));
2370 g_assert (!m->klass->generic_class);
2371 container = mono_method_get_generic_container (m);
2373 container = m->klass->generic_container;
2375 /* Generic signatures depend on the container so they cannot be cached */
2376 /* icall/pinvoke signatures cannot be cached cause we modify them below */
2377 can_cache_signature = !(m->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && !(m->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) && !container;
2379 /* If the method has parameter attributes, that can modify the signature */
2380 if (mono_metadata_method_has_param_attrs (img, idx))
2381 can_cache_signature = FALSE;
2383 if (can_cache_signature) {
2384 mono_image_lock (img);
2385 signature = (MonoMethodSignature *)g_hash_table_lookup (img->method_signatures, sig);
2386 mono_image_unlock (img);
2390 const char *sig_body;
2391 /*TODO we should cache the failure result somewhere*/
2392 if (!mono_verifier_verify_method_signature (img, sig_offset, error))
2395 /* size = */ mono_metadata_decode_blob_size (sig, &sig_body);
2397 signature = mono_metadata_parse_method_signature_full (img, container, idx, sig_body, NULL, error);
2401 if (can_cache_signature) {
2402 mono_image_lock (img);
2403 sig2 = (MonoMethodSignature *)g_hash_table_lookup (img->method_signatures, sig);
2405 g_hash_table_insert (img->method_signatures, (gpointer)sig, signature);
2406 mono_image_unlock (img);
2409 signatures_size += mono_metadata_signature_size (signature);
2412 /* Verify metadata consistency */
2413 if (signature->generic_param_count) {
2414 if (!container || !container->is_method) {
2415 mono_error_set_method_load (error, m->klass, m->name, "Signature claims method has generic parameters, but generic_params table says it doesn't for method 0x%08x from image %s", idx, img->name);
2418 if (container->type_argc != signature->generic_param_count) {
2419 mono_error_set_method_load (error, m->klass, m->name, "Inconsistent generic parameter count. Signature says %d, generic_params table says %d for method 0x%08x from image %s", signature->generic_param_count, container->type_argc, idx, img->name);
2422 } else if (container && container->is_method && container->type_argc) {
2423 mono_error_set_method_load (error, m->klass, m->name, "generic_params table claims method has generic parameters, but signature says it doesn't for method 0x%08x from image %s", idx, img->name);
2426 if (m->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL)
2427 signature->pinvoke = 1;
2428 else if (m->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) {
2429 MonoCallConvention conv = (MonoCallConvention)0;
2430 MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *)m;
2431 signature->pinvoke = 1;
2433 switch (piinfo->piflags & PINVOKE_ATTRIBUTE_CALL_CONV_MASK) {
2434 case 0: /* no call conv, so using default */
2435 case PINVOKE_ATTRIBUTE_CALL_CONV_WINAPI:
2436 conv = MONO_CALL_DEFAULT;
2438 case PINVOKE_ATTRIBUTE_CALL_CONV_CDECL:
2441 case PINVOKE_ATTRIBUTE_CALL_CONV_STDCALL:
2442 conv = MONO_CALL_STDCALL;
2444 case PINVOKE_ATTRIBUTE_CALL_CONV_THISCALL:
2445 conv = MONO_CALL_THISCALL;
2447 case PINVOKE_ATTRIBUTE_CALL_CONV_FASTCALL:
2448 conv = MONO_CALL_FASTCALL;
2450 case PINVOKE_ATTRIBUTE_CALL_CONV_GENERIC:
2451 case PINVOKE_ATTRIBUTE_CALL_CONV_GENERICINST:
2453 mono_error_set_method_load (error, m->klass, m->name, "unsupported calling convention : 0x%04x for method 0x%08x from image %s", piinfo->piflags, idx, img->name);
2456 signature->call_convention = conv;
2459 mono_image_lock (img);
2461 mono_memory_barrier ();
2463 m->signature = signature;
2465 mono_image_unlock (img);
2467 return m->signature;
2471 * mono_method_signature:
2473 * Return the signature of the method M. On failure, returns NULL.
2475 MonoMethodSignature*
2476 mono_method_signature (MonoMethod *m)
2479 MonoMethodSignature *sig;
2481 sig = mono_method_signature_checked (m, &error);
2483 char *type_name = mono_type_get_full_name (m->klass);
2484 g_warning ("Could not load signature of %s:%s due to: %s", type_name, m->name, mono_error_get_message (&error));
2486 mono_error_cleanup (&error);
2493 mono_method_get_name (MonoMethod *method)
2495 return method->name;
2499 mono_method_get_class (MonoMethod *method)
2501 return method->klass;
2505 mono_method_get_token (MonoMethod *method)
2507 return method->token;
2511 mono_method_get_header_checked (MonoMethod *method, MonoError *error)
2517 MonoGenericContainer *container;
2519 mono_error_init (error);
2520 img = method->klass->image;
2522 if ((method->flags & METHOD_ATTRIBUTE_ABSTRACT) || (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) || (method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) || (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) {
2523 mono_error_set_bad_image (error, img, "Method has no body");
2527 if (method->is_inflated) {
2528 MonoMethodInflated *imethod = (MonoMethodInflated *) method;
2529 MonoMethodHeader *header, *iheader;
2531 header = mono_method_get_header_checked (imethod->declaring, error);
2535 iheader = inflate_generic_header (header, mono_method_get_context (method), error);
2536 mono_metadata_free_mh (header);
2544 if (method->wrapper_type != MONO_WRAPPER_NONE || method->sre_method) {
2545 MonoMethodWrapper *mw = (MonoMethodWrapper *)method;
2546 g_assert (mw->header);
2551 * We don't need locks here: the new header is allocated from malloc memory
2552 * and is not stored anywhere in the runtime, the user needs to free it.
2554 g_assert (mono_metadata_token_table (method->token) == MONO_TABLE_METHOD);
2555 idx = mono_metadata_token_index (method->token);
2556 rva = mono_metadata_decode_row_col (&img->tables [MONO_TABLE_METHOD], idx - 1, MONO_METHOD_RVA);
2558 if (!mono_verifier_verify_method_header (img, rva, NULL)) {
2559 mono_error_set_bad_image (error, img, "Invalid method header, failed verification");
2563 loc = mono_image_rva_map (img, rva);
2565 mono_error_set_bad_image (error, img, "Method has zero rva");
2570 * When parsing the types of local variables, we must pass any container available
2571 * to ensure that both VAR and MVAR will get the right owner.
2573 container = mono_method_get_generic_container (method);
2575 container = method->klass->generic_container;
2576 return mono_metadata_parse_mh_full (img, container, (const char *)loc, error);
2580 mono_method_get_header (MonoMethod *method)
2583 MonoMethodHeader *header = mono_method_get_header_checked (method, &error);
2584 mono_error_cleanup (&error);
2590 mono_method_get_flags (MonoMethod *method, guint32 *iflags)
2593 *iflags = method->iflags;
2594 return method->flags;
2598 * Find the method index in the metadata methodDef table.
2601 mono_method_get_index (MonoMethod *method)
2603 MonoClass *klass = method->klass;
2607 /* constructed array methods are not in the MethodDef table */
2611 return mono_metadata_token_index (method->token);
2613 mono_class_setup_methods (klass);
2614 if (mono_class_has_failure (klass))
2616 for (i = 0; i < klass->method.count; ++i) {
2617 if (method == klass->methods [i]) {
2618 if (klass->image->uncompressed_metadata)
2619 return mono_metadata_translate_token_index (klass->image, MONO_TABLE_METHOD, klass->method.first + i + 1);
2621 return klass->method.first + i + 1;