6 * Paolo Molaro (lupus@ximian.com)
7 * Miguel de Icaza (miguel@ximian.com)
8 * Patrik Torstensson (patrik.torstensson@labs2.com)
10 * Copyright 2001-2003 Ximian, Inc (http://www.ximian.com)
11 * Copyright 2004-2009 Novell, Inc (http://www.novell.com)
12 * Copyright 2011 Xamarin, Inc (http://www.xamarin.com)
14 * This file is used by the interpreter and the JIT engine to locate
15 * assemblies. Used to load AssemblyRef and later to resolve various
19 * This should keep track of the assembly versions that we are loading.
21 * Licensed under the MIT license. See LICENSE file in the project root for full license information.
28 #include <mono/metadata/metadata.h>
29 #include <mono/metadata/image.h>
30 #include <mono/metadata/assembly.h>
31 #include <mono/metadata/tokentype.h>
32 #include <mono/metadata/tabledefs.h>
33 #include <mono/metadata/metadata-internals.h>
34 #include <mono/metadata/loader.h>
35 #include <mono/metadata/class-internals.h>
36 #include <mono/metadata/debug-helpers.h>
37 #include <mono/metadata/reflection.h>
38 #include <mono/metadata/profiler.h>
39 #include <mono/metadata/profiler-private.h>
40 #include <mono/metadata/exception.h>
41 #include <mono/metadata/marshal.h>
42 #include <mono/metadata/lock-tracer.h>
43 #include <mono/metadata/verify-internals.h>
44 #include <mono/utils/mono-logger-internals.h>
45 #include <mono/utils/mono-dl.h>
46 #include <mono/utils/mono-membar.h>
47 #include <mono/utils/mono-counters.h>
48 #include <mono/utils/mono-error-internals.h>
49 #include <mono/utils/mono-tls.h>
50 #include <mono/utils/mono-path.h>
52 MonoDefaults mono_defaults;
55 * This lock protects the hash tables inside MonoImage used by the metadata
56 * loading functions in class.c and loader.c.
58 * See domain-internals.h for locking policy in combination with the
61 static MonoCoopMutex loader_mutex;
62 static mono_mutex_t global_loader_data_mutex;
63 static gboolean loader_lock_inited;
66 static guint32 inflated_signatures_size;
67 static guint32 memberref_sig_cache_size;
68 static guint32 methods_size;
69 static guint32 signatures_size;
72 * This TLS variable holds how many times the current thread has acquired the loader
75 MonoNativeTlsKey loader_lock_nest_id;
77 static void dllmap_cleanup (void);
81 global_loader_data_lock (void)
83 mono_locks_os_acquire (&global_loader_data_mutex, LoaderGlobalDataLock);
87 global_loader_data_unlock (void)
89 mono_locks_os_release (&global_loader_data_mutex, LoaderGlobalDataLock);
95 static gboolean inited;
98 mono_coop_mutex_init_recursive (&loader_mutex);
99 mono_os_mutex_init_recursive (&global_loader_data_mutex);
100 loader_lock_inited = TRUE;
102 mono_native_tls_alloc (&loader_lock_nest_id, NULL);
104 mono_counters_init ();
105 mono_counters_register ("Inflated signatures size",
106 MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &inflated_signatures_size);
107 mono_counters_register ("Memberref signature cache size",
108 MONO_COUNTER_METADATA | MONO_COUNTER_INT, &memberref_sig_cache_size);
109 mono_counters_register ("MonoMethod size",
110 MONO_COUNTER_METADATA | MONO_COUNTER_INT, &methods_size);
111 mono_counters_register ("MonoMethodSignature size",
112 MONO_COUNTER_METADATA | MONO_COUNTER_INT, &signatures_size);
119 mono_loader_cleanup (void)
123 mono_native_tls_free (loader_lock_nest_id);
125 mono_coop_mutex_destroy (&loader_mutex);
126 mono_os_mutex_destroy (&global_loader_data_mutex);
127 loader_lock_inited = FALSE;
131 * find_cached_memberref_sig:
133 * Return a cached copy of the memberref signature identified by SIG_IDX.
134 * We use a gpointer since the cache stores both MonoTypes and MonoMethodSignatures.
135 * A cache is needed since the type/signature parsing routines allocate everything
136 * from a mempool, so without a cache, multiple requests for the same signature would
137 * lead to unbounded memory growth. For normal methods/fields this is not a problem
138 * since the resulting methods/fields are cached, but inflated methods/fields cannot
140 * LOCKING: Acquires the loader lock.
143 find_cached_memberref_sig (MonoImage *image, guint32 sig_idx)
147 mono_image_lock (image);
148 res = g_hash_table_lookup (image->memberref_signatures, GUINT_TO_POINTER (sig_idx));
149 mono_image_unlock (image);
155 cache_memberref_sig (MonoImage *image, guint32 sig_idx, gpointer sig)
159 mono_image_lock (image);
160 prev_sig = g_hash_table_lookup (image->memberref_signatures, GUINT_TO_POINTER (sig_idx));
162 /* Somebody got in before us */
166 g_hash_table_insert (image->memberref_signatures, GUINT_TO_POINTER (sig_idx), sig);
167 /* An approximation based on glib 2.18 */
168 memberref_sig_cache_size += sizeof (gpointer) * 4;
170 mono_image_unlock (image);
175 static MonoClassField*
176 field_from_memberref (MonoImage *image, guint32 token, MonoClass **retklass,
177 MonoGenericContext *context, MonoError *error)
179 MonoClass *klass = NULL;
180 MonoClassField *field;
181 MonoTableInfo *tables = image->tables;
184 guint32 nindex, class_index;
187 guint32 idx = mono_metadata_token_index (token);
191 mono_metadata_decode_row (&tables [MONO_TABLE_MEMBERREF], idx-1, cols, MONO_MEMBERREF_SIZE);
192 nindex = cols [MONO_MEMBERREF_CLASS] >> MONO_MEMBERREF_PARENT_BITS;
193 class_index = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
195 fname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
197 if (!mono_verifier_verify_memberref_field_signature (image, cols [MONO_MEMBERREF_SIGNATURE], NULL)) {
198 mono_error_set_bad_image (error, image, "Bad field '%u' signature 0x%08x", class_index, token);
202 switch (class_index) {
203 case MONO_MEMBERREF_PARENT_TYPEDEF:
204 klass = mono_class_get_checked (image, MONO_TOKEN_TYPE_DEF | nindex, error);
206 case MONO_MEMBERREF_PARENT_TYPEREF:
207 klass = mono_class_from_typeref_checked (image, MONO_TOKEN_TYPE_REF | nindex, error);
209 case MONO_MEMBERREF_PARENT_TYPESPEC:
210 klass = mono_class_get_and_inflate_typespec_checked (image, MONO_TOKEN_TYPE_SPEC | nindex, context, error);
213 mono_error_set_bad_image (error, image, "Bad field field '%u' signature 0x%08x", class_index, token);
219 ptr = mono_metadata_blob_heap (image, cols [MONO_MEMBERREF_SIGNATURE]);
220 mono_metadata_decode_blob_size (ptr, &ptr);
221 /* we may want to check the signature here... */
224 mono_error_set_field_load (error, klass, fname, "Bad field signature class token %08x field name %s token %08x", class_index, fname, token);
228 /* FIXME: This needs a cache, especially for generic instances, since
229 * we ask mono_metadata_parse_type_checked () to allocates everything from a mempool.
230 * FIXME part2, mono_metadata_parse_type_checked actually allows for a transient type instead.
231 * FIXME part3, transient types are not 100% transient, so we need to take care of that first.
233 sig_type = (MonoType *)find_cached_memberref_sig (image, cols [MONO_MEMBERREF_SIGNATURE]);
235 MonoError inner_error;
236 sig_type = mono_metadata_parse_type_checked (image, NULL, 0, FALSE, ptr, &ptr, &inner_error);
237 if (sig_type == NULL) {
238 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));
239 mono_error_cleanup (&inner_error);
242 sig_type = (MonoType *)cache_memberref_sig (image, cols [MONO_MEMBERREF_SIGNATURE], sig_type);
245 mono_class_init (klass); /*FIXME is this really necessary?*/
248 field = mono_class_get_field_from_name_full (klass, fname, sig_type);
251 mono_error_set_field_load (error, klass, fname, "Could not find field '%s'", fname);
258 * mono_field_from_token:
259 * @deprecated use the _checked variant
260 * Notes: runtime code MUST not use this function
263 mono_field_from_token (MonoImage *image, guint32 token, MonoClass **retklass, MonoGenericContext *context)
266 MonoClassField *res = mono_field_from_token_checked (image, token, retklass, context, &error);
267 g_assert (mono_error_ok (&error));
272 mono_field_from_token_checked (MonoImage *image, guint32 token, MonoClass **retklass, MonoGenericContext *context, MonoError *error)
276 MonoClassField *field;
280 if (image_is_dynamic (image)) {
281 MonoClassField *result;
282 MonoClass *handle_class;
285 MonoError inner_error;
286 result = (MonoClassField *)mono_lookup_dynamic_token_class (image, token, TRUE, &handle_class, context, &inner_error);
287 mono_error_cleanup (&inner_error);
288 // This checks the memberref type as well
289 if (!result || handle_class != mono_defaults.fieldhandle_class) {
290 mono_error_set_bad_image (error, image, "Bad field token 0x%08x", token);
293 *retklass = result->parent;
297 if ((field = (MonoClassField *)mono_conc_hashtable_lookup (image->field_cache, GUINT_TO_POINTER (token)))) {
298 *retklass = field->parent;
302 if (mono_metadata_token_table (token) == MONO_TABLE_MEMBERREF) {
303 field = field_from_memberref (image, token, retklass, context, error);
305 type = mono_metadata_typedef_from_field (image, mono_metadata_token_index (token));
307 mono_error_set_bad_image (error, image, "Invalid field token 0x%08x", token);
310 k = mono_class_get_checked (image, MONO_TOKEN_TYPE_DEF | type, error);
317 field = mono_class_get_field (k, token);
319 mono_error_set_bad_image (error, image, "Could not resolve field token 0x%08x", token);
323 if (field && field->parent && !mono_class_is_ginst (field->parent) && !mono_class_is_gtd (field->parent)) {
324 mono_image_lock (image);
325 mono_conc_hashtable_insert (image->field_cache, GUINT_TO_POINTER (token), field);
326 mono_image_unlock (image);
333 mono_metadata_signature_vararg_match (MonoMethodSignature *sig1, MonoMethodSignature *sig2)
337 if (sig1->hasthis != sig2->hasthis ||
338 sig1->sentinelpos != sig2->sentinelpos)
341 for (i = 0; i < sig1->sentinelpos; i++) {
342 MonoType *p1 = sig1->params[i];
343 MonoType *p2 = sig2->params[i];
345 /*if (p1->attrs != p2->attrs)
348 if (!mono_metadata_type_equal (p1, p2))
352 if (!mono_metadata_type_equal (sig1->ret, sig2->ret))
358 find_method_in_class (MonoClass *klass, const char *name, const char *qname, const char *fqname,
359 MonoMethodSignature *sig, MonoClass *from_class, MonoError *error)
363 /* Search directly in the metadata to avoid calling setup_methods () */
366 /* FIXME: !mono_class_is_ginst (from_class) condition causes test failures. */
367 if (klass->type_token && !image_is_dynamic (klass->image) && !klass->methods && !klass->rank && klass == from_class && !mono_class_is_ginst (from_class)) {
368 int first_idx = mono_class_get_first_method_idx (klass);
369 int mcount = mono_class_get_method_count (klass);
370 for (i = 0; i < mcount; ++i) {
371 guint32 cols [MONO_METHOD_SIZE];
374 MonoMethodSignature *other_sig;
376 mono_metadata_decode_table_row (klass->image, MONO_TABLE_METHOD, first_idx + i, cols, MONO_METHOD_SIZE);
378 m_name = mono_metadata_string_heap (klass->image, cols [MONO_METHOD_NAME]);
380 if (!((fqname && !strcmp (m_name, fqname)) ||
381 (qname && !strcmp (m_name, qname)) ||
382 (name && !strcmp (m_name, name))))
385 method = mono_get_method_checked (klass->image, MONO_TOKEN_METHOD_DEF | (first_idx + i + 1), klass, NULL, error);
386 if (!mono_error_ok (error)) //bail out if we hit a loader error
389 other_sig = mono_method_signature_checked (method, error);
390 if (!mono_error_ok (error)) //bail out if we hit a loader error
392 if (other_sig && (sig->call_convention != MONO_CALL_VARARG) && mono_metadata_signature_equal (sig, other_sig))
398 mono_class_setup_methods (klass); /* FIXME don't swallow the error here. */
400 We can't fail lookup of methods otherwise the runtime will fail with MissingMethodException instead of TypeLoadException.
401 See mono/tests/generic-type-load-exception.2.il
402 FIXME we should better report this error to the caller
404 if (!klass->methods || mono_class_has_failure (klass)) {
405 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
409 int mcount = mono_class_get_method_count (klass);
410 for (i = 0; i < mcount; ++i) {
411 MonoMethod *m = klass->methods [i];
412 MonoMethodSignature *msig;
414 /* We must cope with failing to load some of the types. */
418 if (!((fqname && !strcmp (m->name, fqname)) ||
419 (qname && !strcmp (m->name, qname)) ||
420 (name && !strcmp (m->name, name))))
422 msig = mono_method_signature_checked (m, error);
423 if (!mono_error_ok (error)) //bail out if we hit a loader error
429 if (sig->call_convention == MONO_CALL_VARARG) {
430 if (mono_metadata_signature_vararg_match (sig, msig))
433 if (mono_metadata_signature_equal (sig, msig))
439 return mono_class_get_method_by_index (from_class, i);
444 find_method (MonoClass *in_class, MonoClass *ic, const char* name, MonoMethodSignature *sig, MonoClass *from_class, MonoError *error)
447 char *qname, *fqname, *class_name;
448 gboolean is_interface;
449 MonoMethod *result = NULL;
450 MonoClass *initial_class = in_class;
453 is_interface = MONO_CLASS_IS_INTERFACE (in_class);
456 class_name = mono_type_get_name_full (&ic->byval_arg, MONO_TYPE_NAME_FORMAT_IL);
458 qname = g_strconcat (class_name, ".", name, NULL);
459 if (ic->name_space && ic->name_space [0])
460 fqname = g_strconcat (ic->name_space, ".", class_name, ".", name, NULL);
464 class_name = qname = fqname = NULL;
467 g_assert (from_class);
468 result = find_method_in_class (in_class, name, qname, fqname, sig, from_class, error);
469 if (result || !mono_error_ok (error))
472 if (name [0] == '.' && (!strcmp (name, ".ctor") || !strcmp (name, ".cctor")))
476 * This happens when we fail to lazily load the interfaces of one of the types.
477 * On such case we can't just bail out since user code depends on us trying harder.
479 if (from_class->interface_offsets_count != in_class->interface_offsets_count) {
480 in_class = in_class->parent;
481 from_class = from_class->parent;
485 for (i = 0; i < in_class->interface_offsets_count; i++) {
486 MonoClass *in_ic = in_class->interfaces_packed [i];
487 MonoClass *from_ic = from_class->interfaces_packed [i];
488 char *ic_qname, *ic_fqname, *ic_class_name;
490 ic_class_name = mono_type_get_name_full (&in_ic->byval_arg, MONO_TYPE_NAME_FORMAT_IL);
491 ic_qname = g_strconcat (ic_class_name, ".", name, NULL);
492 if (in_ic->name_space && in_ic->name_space [0])
493 ic_fqname = g_strconcat (in_ic->name_space, ".", ic_class_name, ".", name, NULL);
497 result = find_method_in_class (in_ic, ic ? name : NULL, ic_qname, ic_fqname, sig, from_ic, error);
498 g_free (ic_class_name);
501 if (result || !mono_error_ok (error))
505 in_class = in_class->parent;
506 from_class = from_class->parent;
508 g_assert (!in_class == !from_class);
511 result = find_method_in_class (mono_defaults.object_class, name, qname, fqname, sig, mono_defaults.object_class, error);
513 //we did not find the method
514 if (!result && mono_error_ok (error)) {
515 char *desc = mono_signature_get_desc (sig, FALSE);
516 mono_error_set_method_load (error, initial_class, name, "Could not find method with signature %s", desc);
527 static MonoMethodSignature*
528 inflate_generic_signature_checked (MonoImage *image, MonoMethodSignature *sig, MonoGenericContext *context, MonoError *error)
530 MonoMethodSignature *res;
538 res = (MonoMethodSignature *)g_malloc0 (MONO_SIZEOF_METHOD_SIGNATURE + ((gint32)sig->param_count) * sizeof (MonoType*));
539 res->param_count = sig->param_count;
540 res->sentinelpos = -1;
541 res->ret = mono_class_inflate_generic_type_checked (sig->ret, context, error);
542 if (!mono_error_ok (error))
544 is_open = mono_class_is_open_constructed_type (res->ret);
545 for (i = 0; i < sig->param_count; ++i) {
546 res->params [i] = mono_class_inflate_generic_type_checked (sig->params [i], context, error);
547 if (!mono_error_ok (error))
551 is_open = mono_class_is_open_constructed_type (res->params [i]);
553 res->hasthis = sig->hasthis;
554 res->explicit_this = sig->explicit_this;
555 res->call_convention = sig->call_convention;
556 res->pinvoke = sig->pinvoke;
557 res->generic_param_count = sig->generic_param_count;
558 res->sentinelpos = sig->sentinelpos;
559 res->has_type_parameters = is_open;
560 res->is_inflated = 1;
565 mono_metadata_free_type (res->ret);
566 for (i = 0; i < sig->param_count; ++i) {
568 mono_metadata_free_type (res->params [i]);
575 * mono_inflate_generic_signature:
577 * Inflate SIG with CONTEXT, and return a canonical copy. On error, set ERROR, and return NULL.
580 mono_inflate_generic_signature (MonoMethodSignature *sig, MonoGenericContext *context, MonoError *error)
582 MonoMethodSignature *res, *cached;
584 res = inflate_generic_signature_checked (NULL, sig, context, error);
585 if (!mono_error_ok (error))
587 cached = mono_metadata_get_inflated_signature (res, context);
589 mono_metadata_free_inflated_signature (res);
593 static MonoMethodHeader*
594 inflate_generic_header (MonoMethodHeader *header, MonoGenericContext *context, MonoError *error)
596 size_t locals_size = sizeof (gpointer) * header->num_locals;
597 size_t clauses_size = header->num_clauses * sizeof (MonoExceptionClause);
598 size_t header_size = MONO_SIZEOF_METHOD_HEADER + locals_size + clauses_size;
599 MonoMethodHeader *res = (MonoMethodHeader *)g_malloc0 (header_size);
600 res->num_locals = header->num_locals;
601 res->clauses = (MonoExceptionClause *) &res->locals [res->num_locals] ;
602 memcpy (res->clauses, header->clauses, clauses_size);
604 res->code = header->code;
605 res->code_size = header->code_size;
606 res->max_stack = header->max_stack;
607 res->num_clauses = header->num_clauses;
608 res->init_locals = header->init_locals;
610 res->is_transient = TRUE;
614 for (int i = 0; i < header->num_locals; ++i) {
615 res->locals [i] = mono_class_inflate_generic_type_checked (header->locals [i], context, error);
619 if (res->num_clauses) {
620 for (int i = 0; i < header->num_clauses; ++i) {
621 MonoExceptionClause *clause = &res->clauses [i];
622 if (clause->flags != MONO_EXCEPTION_CLAUSE_NONE)
624 clause->data.catch_class = mono_class_inflate_generic_class_checked (clause->data.catch_class, context, error);
636 * token is the method_ref/def/spec token used in a call IL instruction.
637 * @deprecated use the _checked variant
638 * Notes: runtime code MUST not use this function
641 mono_method_get_signature_full (MonoMethod *method, MonoImage *image, guint32 token, MonoGenericContext *context)
644 MonoMethodSignature *res = mono_method_get_signature_checked (method, image, token, context, &error);
645 mono_error_cleanup (&error);
650 mono_method_get_signature_checked (MonoMethod *method, MonoImage *image, guint32 token, MonoGenericContext *context, MonoError *error)
652 int table = mono_metadata_token_table (token);
653 int idx = mono_metadata_token_index (token);
655 guint32 cols [MONO_MEMBERREF_SIZE];
656 MonoMethodSignature *sig;
661 /* !table is for wrappers: we should really assign their own token to them */
662 if (!table || table == MONO_TABLE_METHOD)
663 return mono_method_signature_checked (method, error);
665 if (table == MONO_TABLE_METHODSPEC) {
666 /* the verifier (do_invoke_method) will turn the NULL into a verifier error */
667 if ((method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) || !method->is_inflated) {
668 mono_error_set_bad_image (error, image, "Method is a pinvoke or open generic");
672 return mono_method_signature_checked (method, error);
675 if (mono_class_is_ginst (method->klass))
676 return mono_method_signature_checked (method, error);
678 if (image_is_dynamic (image)) {
679 sig = mono_reflection_lookup_signature (image, method, token, error);
683 mono_metadata_decode_row (&image->tables [MONO_TABLE_MEMBERREF], idx-1, cols, MONO_MEMBERREF_SIZE);
684 sig_idx = cols [MONO_MEMBERREF_SIGNATURE];
686 sig = (MonoMethodSignature *)find_cached_memberref_sig (image, sig_idx);
688 if (!mono_verifier_verify_memberref_method_signature (image, sig_idx, NULL)) {
689 guint32 klass = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
690 const char *fname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
692 //FIXME include the verification error
693 mono_error_set_bad_image (error, image, "Bad method signature class token 0x%08x field name %s token 0x%08x", klass, fname, token);
697 ptr = mono_metadata_blob_heap (image, sig_idx);
698 mono_metadata_decode_blob_size (ptr, &ptr);
700 sig = mono_metadata_parse_method_signature_full (image, NULL, 0, ptr, NULL, error);
704 sig = (MonoMethodSignature *)cache_memberref_sig (image, sig_idx, sig);
706 /* FIXME: we probably should verify signature compat in the dynamic case too*/
707 if (!mono_verifier_is_sig_compatible (image, method, sig)) {
708 guint32 klass = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
709 const char *fname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
711 mono_error_set_bad_image (error, image, "Incompatible method signature class token 0x%08x field name %s token 0x%08x", klass, fname, token);
717 MonoMethodSignature *cached;
719 /* This signature is not owned by a MonoMethod, so need to cache */
720 sig = inflate_generic_signature_checked (image, sig, context, error);
721 if (!mono_error_ok (error))
724 cached = mono_metadata_get_inflated_signature (sig, context);
726 mono_metadata_free_inflated_signature (sig);
728 inflated_signatures_size += mono_metadata_signature_size (cached);
732 g_assert (mono_error_ok (error));
737 * token is the method_ref/def/spec token used in a call IL instruction.
738 * @deprecated use the _checked variant
739 * Notes: runtime code MUST not use this function
742 mono_method_get_signature (MonoMethod *method, MonoImage *image, guint32 token)
745 MonoMethodSignature *res = mono_method_get_signature_checked (method, image, token, NULL, &error);
746 mono_error_cleanup (&error);
750 /* this is only for the typespec array methods */
752 mono_method_search_in_array_class (MonoClass *klass, const char *name, MonoMethodSignature *sig)
756 mono_class_setup_methods (klass);
757 g_assert (!mono_class_has_failure (klass)); /*FIXME this should not fail, right?*/
758 int mcount = mono_class_get_method_count (klass);
759 for (i = 0; i < mcount; ++i) {
760 MonoMethod *method = klass->methods [i];
761 if (strcmp (method->name, name) == 0 && sig->param_count == method->signature->param_count)
768 method_from_memberref (MonoImage *image, guint32 idx, MonoGenericContext *typespec_context,
769 gboolean *used_context, MonoError *error)
771 MonoClass *klass = NULL;
772 MonoMethod *method = NULL;
773 MonoTableInfo *tables = image->tables;
775 guint32 nindex, class_index, sig_idx;
777 MonoMethodSignature *sig;
782 mono_metadata_decode_row (&tables [MONO_TABLE_MEMBERREF], idx-1, cols, 3);
783 nindex = cols [MONO_MEMBERREF_CLASS] >> MONO_MEMBERREF_PARENT_BITS;
784 class_index = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
785 /*g_print ("methodref: 0x%x 0x%x %s\n", class, nindex,
786 mono_metadata_string_heap (m, cols [MONO_MEMBERREF_NAME]));*/
788 mname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
791 * Whether we actually used the `typespec_context' or not.
792 * This is used to tell our caller whether or not it's safe to insert the returned
793 * method into a cache.
796 *used_context = class_index == MONO_MEMBERREF_PARENT_TYPESPEC;
798 switch (class_index) {
799 case MONO_MEMBERREF_PARENT_TYPEREF:
800 klass = mono_class_from_typeref_checked (image, MONO_TOKEN_TYPE_REF | nindex, error);
804 case MONO_MEMBERREF_PARENT_TYPESPEC:
806 * Parse the TYPESPEC in the parent's context.
808 klass = mono_class_get_and_inflate_typespec_checked (image, MONO_TOKEN_TYPE_SPEC | nindex, typespec_context, error);
812 case MONO_MEMBERREF_PARENT_TYPEDEF:
813 klass = mono_class_get_checked (image, MONO_TOKEN_TYPE_DEF | nindex, error);
817 case MONO_MEMBERREF_PARENT_METHODDEF: {
818 method = mono_get_method_checked (image, MONO_TOKEN_METHOD_DEF | nindex, NULL, NULL, error);
824 mono_error_set_bad_image (error, image, "Memberref parent unknown: class: %d, index %d", class_index, nindex);
829 mono_class_init (klass);
831 sig_idx = cols [MONO_MEMBERREF_SIGNATURE];
833 if (!mono_verifier_verify_memberref_method_signature (image, sig_idx, NULL)) {
834 mono_error_set_method_load (error, klass, mname, "Verifier rejected method signature");
838 ptr = mono_metadata_blob_heap (image, sig_idx);
839 mono_metadata_decode_blob_size (ptr, &ptr);
841 sig = (MonoMethodSignature *)find_cached_memberref_sig (image, sig_idx);
843 sig = mono_metadata_parse_method_signature_full (image, NULL, 0, ptr, NULL, error);
847 sig = (MonoMethodSignature *)cache_memberref_sig (image, sig_idx, sig);
850 switch (class_index) {
851 case MONO_MEMBERREF_PARENT_TYPEREF:
852 case MONO_MEMBERREF_PARENT_TYPEDEF:
853 method = find_method (klass, NULL, mname, sig, klass, error);
856 case MONO_MEMBERREF_PARENT_TYPESPEC: {
859 type = &klass->byval_arg;
861 if (type->type != MONO_TYPE_ARRAY && type->type != MONO_TYPE_SZARRAY) {
862 MonoClass *in_class = mono_class_is_ginst (klass) ? mono_class_get_generic_class (klass)->container_class : klass;
863 method = find_method (in_class, NULL, mname, sig, klass, error);
867 /* we're an array and we created these methods already in klass in mono_class_init () */
868 method = mono_method_search_in_array_class (klass, mname, sig);
872 mono_error_set_bad_image (error, image,"Memberref parent unknown: class: %d, index %d", class_index, nindex);
876 if (!method && mono_error_ok (error)) {
877 char *msig = mono_signature_get_desc (sig, FALSE);
878 GString *s = g_string_new (mname);
879 if (sig->generic_param_count)
880 g_string_append_printf (s, "<[%d]>", sig->generic_param_count);
881 g_string_append_printf (s, "(%s)", msig);
883 msig = g_string_free (s, FALSE);
885 mono_error_set_method_load (error, klass, mname, "Could not find method %s", msig);
893 g_assert (!mono_error_ok (error));
898 method_from_methodspec (MonoImage *image, MonoGenericContext *context, guint32 idx, MonoError *error)
902 MonoTableInfo *tables = image->tables;
903 MonoGenericContext new_context;
904 MonoGenericInst *inst;
906 guint32 cols [MONO_METHODSPEC_SIZE];
907 guint32 token, nindex, param_count;
911 mono_metadata_decode_row (&tables [MONO_TABLE_METHODSPEC], idx - 1, cols, MONO_METHODSPEC_SIZE);
912 token = cols [MONO_METHODSPEC_METHOD];
913 nindex = token >> MONO_METHODDEFORREF_BITS;
915 if (!mono_verifier_verify_methodspec_signature (image, cols [MONO_METHODSPEC_SIGNATURE], NULL)) {
916 mono_error_set_bad_image (error, image, "Bad method signals signature 0x%08x", idx);
920 ptr = mono_metadata_blob_heap (image, cols [MONO_METHODSPEC_SIGNATURE]);
922 mono_metadata_decode_value (ptr, &ptr);
924 param_count = mono_metadata_decode_value (ptr, &ptr);
926 inst = mono_metadata_parse_generic_inst (image, NULL, param_count, ptr, &ptr, error);
930 if (context && inst->is_open) {
931 inst = mono_metadata_inflate_generic_inst (inst, context, error);
932 if (!mono_error_ok (error))
936 if ((token & MONO_METHODDEFORREF_MASK) == MONO_METHODDEFORREF_METHODDEF) {
937 method = mono_get_method_checked (image, MONO_TOKEN_METHOD_DEF | nindex, NULL, context, error);
941 method = method_from_memberref (image, nindex, context, NULL, error);
947 klass = method->klass;
949 if (mono_class_is_ginst (klass)) {
950 g_assert (method->is_inflated);
951 method = ((MonoMethodInflated *) method)->declaring;
954 new_context.class_inst = mono_class_is_ginst (klass) ? mono_class_get_generic_class (klass)->context.class_inst : NULL;
955 new_context.method_inst = inst;
957 method = mono_class_inflate_generic_method_full_checked (method, klass, &new_context, error);
969 static MonoDllMap *global_dll_map;
972 mono_dllmap_lookup_list (MonoDllMap *dll_map, const char *dll, const char* func, const char **rdll, const char **rfunc) {
980 global_loader_data_lock ();
983 * we use the first entry we find that matches, since entries from
984 * the config file are prepended to the list and we document that the
987 for (; dll_map; dll_map = dll_map->next) {
988 if (dll_map->dll [0] == 'i' && dll_map->dll [1] == ':') {
989 if (g_ascii_strcasecmp (dll_map->dll + 2, dll))
991 } else if (strcmp (dll_map->dll, dll)) {
994 if (!found && dll_map->target) {
995 *rdll = dll_map->target;
997 /* we don't quit here, because we could find a full
998 * entry that matches also function and that has priority.
1001 if (dll_map->func && strcmp (dll_map->func, func) == 0) {
1002 *rdll = dll_map->target;
1003 *rfunc = dll_map->target_func;
1008 global_loader_data_unlock ();
1013 mono_dllmap_lookup (MonoImage *assembly, const char *dll, const char* func, const char **rdll, const char **rfunc)
1016 if (assembly && assembly->dll_map) {
1017 res = mono_dllmap_lookup_list (assembly->dll_map, dll, func, rdll, rfunc);
1021 return mono_dllmap_lookup_list (global_dll_map, dll, func, rdll, rfunc);
1025 * mono_dllmap_insert:
1026 * @assembly: if NULL, this is a global mapping, otherwise the remapping of the dynamic library will only apply to the specified assembly
1027 * @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
1028 * @func: if not null, the mapping will only applied to the named function (the value of EntryPoint)
1029 * @tdll: The name of the library to map the specified @dll if it matches.
1030 * @tfunc: The name of the function that replaces the invocation. If NULL, it is replaced with a copy of @func.
1032 * LOCKING: Acquires the loader lock.
1034 * This function is used to programatically add DllImport remapping in either
1035 * a specific assembly, or as a global remapping. This is done by remapping
1036 * references in a DllImport attribute from the @dll library name into the @tdll
1037 * name. If the @dll name contains the prefix "i:", the comparison of the
1038 * library name is done without case sensitivity.
1040 * If you pass @func, this is the name of the EntryPoint in a DllImport if specified
1041 * or the name of the function as determined by DllImport. If you pass @func, you
1042 * must also pass @tfunc which is the name of the target function to invoke on a match.
1045 * mono_dllmap_insert (NULL, "i:libdemo.dll", NULL, relocated_demo_path, NULL);
1047 * The above will remap DllImport statments for "libdemo.dll" and "LIBDEMO.DLL" to
1048 * the contents of relocated_demo_path for all assemblies in the Mono process.
1050 * NOTE: This can be called before the runtime is initialized, for example from
1051 * mono_config_parse ().
1054 mono_dllmap_insert (MonoImage *assembly, const char *dll, const char *func, const char *tdll, const char *tfunc)
1058 mono_loader_init ();
1061 entry = (MonoDllMap *)g_malloc0 (sizeof (MonoDllMap));
1062 entry->dll = dll? g_strdup (dll): NULL;
1063 entry->target = tdll? g_strdup (tdll): NULL;
1064 entry->func = func? g_strdup (func): NULL;
1065 entry->target_func = tfunc? g_strdup (tfunc): (func? g_strdup (func): NULL);
1067 global_loader_data_lock ();
1068 entry->next = global_dll_map;
1069 global_dll_map = entry;
1070 global_loader_data_unlock ();
1072 entry = (MonoDllMap *)mono_image_alloc0 (assembly, sizeof (MonoDllMap));
1073 entry->dll = dll? mono_image_strdup (assembly, dll): NULL;
1074 entry->target = tdll? mono_image_strdup (assembly, tdll): NULL;
1075 entry->func = func? mono_image_strdup (assembly, func): NULL;
1076 entry->target_func = tfunc? mono_image_strdup (assembly, tfunc): (func? mono_image_strdup (assembly, func): NULL);
1078 mono_image_lock (assembly);
1079 entry->next = assembly->dll_map;
1080 assembly->dll_map = entry;
1081 mono_image_unlock (assembly);
1086 free_dllmap (MonoDllMap *map)
1089 MonoDllMap *next = map->next;
1092 g_free (map->target);
1094 g_free (map->target_func);
1101 dllmap_cleanup (void)
1103 free_dllmap (global_dll_map);
1104 global_dll_map = NULL;
1107 static GHashTable *global_module_map;
1110 cached_module_load (const char *name, int flags, char **err)
1116 global_loader_data_lock ();
1117 if (!global_module_map)
1118 global_module_map = g_hash_table_new (g_str_hash, g_str_equal);
1119 res = (MonoDl *)g_hash_table_lookup (global_module_map, name);
1121 global_loader_data_unlock ();
1124 res = mono_dl_open (name, flags, err);
1126 g_hash_table_insert (global_module_map, g_strdup (name), res);
1127 global_loader_data_unlock ();
1132 mono_loader_register_module (const char *name, MonoDl *module)
1134 if (!global_module_map)
1135 global_module_map = g_hash_table_new (g_str_hash, g_str_equal);
1136 g_hash_table_insert (global_module_map, g_strdup (name), module);
1139 static MonoDl *internal_module;
1142 is_absolute_path (const char *path)
1144 #ifdef PLATFORM_MACOSX
1145 if (!strncmp (path, "@executable_path/", 17) || !strncmp (path, "@loader_path/", 13) ||
1146 !strncmp (path, "@rpath/", 7))
1149 return g_path_is_absolute (path);
1153 mono_lookup_pinvoke_call (MonoMethod *method, const char **exc_class, const char **exc_arg)
1155 MonoImage *image = method->klass->image;
1156 MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *)method;
1157 MonoTableInfo *tables = image->tables;
1158 MonoTableInfo *im = &tables [MONO_TABLE_IMPLMAP];
1159 MonoTableInfo *mr = &tables [MONO_TABLE_MODULEREF];
1160 guint32 im_cols [MONO_IMPLMAP_SIZE];
1161 guint32 scope_token;
1162 const char *import = NULL;
1163 const char *orig_scope;
1164 const char *new_scope;
1166 char *full_name, *file_name, *found_name = NULL;
1168 MonoDl *module = NULL;
1169 gboolean cached = FALSE;
1170 gpointer addr = NULL;
1172 g_assert (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL);
1180 return piinfo->addr;
1182 if (image_is_dynamic (method->klass->image)) {
1183 MonoReflectionMethodAux *method_aux =
1184 (MonoReflectionMethodAux *)g_hash_table_lookup (
1185 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
1189 import = method_aux->dllentry;
1190 orig_scope = method_aux->dll;
1193 if (!piinfo->implmap_idx || piinfo->implmap_idx > im->rows)
1196 mono_metadata_decode_row (im, piinfo->implmap_idx - 1, im_cols, MONO_IMPLMAP_SIZE);
1198 if (!im_cols [MONO_IMPLMAP_SCOPE] || im_cols [MONO_IMPLMAP_SCOPE] > mr->rows)
1201 piinfo->piflags = im_cols [MONO_IMPLMAP_FLAGS];
1202 import = mono_metadata_string_heap (image, im_cols [MONO_IMPLMAP_NAME]);
1203 scope_token = mono_metadata_decode_row_col (mr, im_cols [MONO_IMPLMAP_SCOPE] - 1, MONO_MODULEREF_NAME);
1204 orig_scope = mono_metadata_string_heap (image, scope_token);
1207 mono_dllmap_lookup (image, orig_scope, import, &new_scope, &import);
1210 mono_image_lock (image);
1211 if (!image->pinvoke_scopes) {
1212 image->pinvoke_scopes = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL);
1213 image->pinvoke_scope_filenames = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
1215 module = (MonoDl *)g_hash_table_lookup (image->pinvoke_scopes, new_scope);
1216 found_name = (char *)g_hash_table_lookup (image->pinvoke_scope_filenames, new_scope);
1217 mono_image_unlock (image);
1221 found_name = g_strdup (found_name);
1225 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1226 "DllImport attempting to load: '%s'.", new_scope);
1228 /* we allow a special name to dlopen from the running process namespace */
1229 if (strcmp (new_scope, "__Internal") == 0){
1230 if (internal_module == NULL)
1231 internal_module = mono_dl_open (NULL, MONO_DL_LAZY, &error_msg);
1232 module = internal_module;
1237 * Try loading the module using a variety of names
1239 for (i = 0; i < 5; ++i) {
1240 char *base_name = NULL, *dir_name = NULL;
1241 gboolean is_absolute = is_absolute_path (new_scope);
1245 /* Try the original name */
1246 file_name = g_strdup (new_scope);
1249 /* Try trimming the .dll extension */
1250 if (strstr (new_scope, ".dll") == (new_scope + strlen (new_scope) - 4)) {
1251 file_name = g_strdup (new_scope);
1252 file_name [strlen (new_scope) - 4] = '\0';
1259 dir_name = g_path_get_dirname (new_scope);
1260 base_name = g_path_get_basename (new_scope);
1261 if (strstr (base_name, "lib") != base_name) {
1262 char *tmp = g_strdup_printf ("lib%s", base_name);
1265 file_name = g_strdup_printf ("%s%s%s", dir_name, G_DIR_SEPARATOR_S, base_name);
1268 } else if (strstr (new_scope, "lib") != new_scope) {
1269 file_name = g_strdup_printf ("lib%s", new_scope);
1274 if (!is_absolute && mono_dl_get_system_dir ()) {
1275 dir_name = (char*)mono_dl_get_system_dir ();
1276 file_name = g_path_get_basename (new_scope);
1282 #ifndef TARGET_WIN32
1283 if (!g_ascii_strcasecmp ("user32.dll", new_scope) ||
1284 !g_ascii_strcasecmp ("kernel32.dll", new_scope) ||
1285 !g_ascii_strcasecmp ("user32", new_scope) ||
1286 !g_ascii_strcasecmp ("kernel", new_scope)) {
1287 file_name = g_strdup ("libMonoSupportW.so");
1291 #ifndef TARGET_WIN32
1298 dir_name = g_path_get_dirname (file_name);
1300 base_name = g_path_get_basename (file_name);
1303 if (!module && is_absolute) {
1304 module = cached_module_load (file_name, MONO_DL_LAZY, &error_msg);
1306 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1307 "DllImport error loading library '%s': '%s'.",
1308 file_name, error_msg);
1311 found_name = g_strdup (file_name);
1315 if (!module && !is_absolute) {
1319 for (j = 0; j < 3; ++j) {
1324 mdirname = g_path_get_dirname (image->name);
1326 case 1: /* @executable_path@/../lib */
1330 binl = mono_dl_get_executable_path (buf, sizeof (buf));
1332 char *base, *newbase;
1335 resolvedname = mono_path_resolve_symlinks (buf);
1337 base = g_path_get_dirname (resolvedname);
1338 newbase = g_path_get_dirname(base);
1339 mdirname = g_strdup_printf ("%s/lib", newbase);
1341 g_free (resolvedname);
1348 case 2: /* @executable_path@/../Libraries */
1352 binl = mono_dl_get_executable_path (buf, sizeof (buf));
1354 char *base, *newbase;
1357 resolvedname = mono_path_resolve_symlinks (buf);
1359 base = g_path_get_dirname (resolvedname);
1360 newbase = g_path_get_dirname(base);
1361 mdirname = g_strdup_printf ("%s/Libraries", newbase);
1363 g_free (resolvedname);
1375 while ((full_name = mono_dl_build_path (mdirname, file_name, &iter))) {
1376 module = cached_module_load (full_name, MONO_DL_LAZY, &error_msg);
1378 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1379 "DllImport error loading library '%s': '%s'.",
1380 full_name, error_msg);
1383 found_name = g_strdup (full_name);
1399 char *file_or_base = is_absolute ? base_name : file_name;
1400 while ((full_name = mono_dl_build_path (dir_name, file_or_base, &iter))) {
1401 module = cached_module_load (full_name, MONO_DL_LAZY, &error_msg);
1403 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1404 "DllImport error loading library '%s': '%s'.",
1405 full_name, error_msg);
1408 found_name = g_strdup (full_name);
1417 module = cached_module_load (file_name, MONO_DL_LAZY, &error_msg);
1419 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1420 "DllImport error loading library '%s': '%s'.",
1421 file_name, error_msg);
1423 found_name = g_strdup (file_name);
1438 mono_trace (G_LOG_LEVEL_WARNING, MONO_TRACE_DLLIMPORT,
1439 "DllImport unable to load library '%s'.",
1444 *exc_class = "DllNotFoundException";
1445 *exc_arg = new_scope;
1451 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1452 "DllImport loaded library '%s'.", found_name);
1453 mono_image_lock (image);
1454 if (!g_hash_table_lookup (image->pinvoke_scopes, new_scope)) {
1455 g_hash_table_insert (image->pinvoke_scopes, g_strdup (new_scope), module);
1456 g_hash_table_insert (image->pinvoke_scope_filenames, g_strdup (new_scope), g_strdup (found_name));
1458 mono_image_unlock (image);
1461 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1462 "DllImport searching in: '%s' ('%s').", new_scope, found_name);
1463 g_free (found_name);
1466 if (import && import [0] == '#' && isdigit (import [1])) {
1470 id = strtol (import + 1, &end, 10);
1471 if (id > 0 && *end == '\0')
1475 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1476 "Searching for '%s'.", import);
1478 if (piinfo->piflags & PINVOKE_ATTRIBUTE_NO_MANGLE) {
1479 error_msg = mono_dl_symbol (module, import, &addr);
1481 char *mangled_name = NULL, *mangled_name2 = NULL;
1484 int mangle_param_count;
1490 * Search using a variety of mangled names
1492 for (mangle_charset = 0; mangle_charset <= 1; mangle_charset ++) {
1493 for (mangle_stdcall = 0; mangle_stdcall <= 1; mangle_stdcall ++) {
1494 gboolean need_param_count = FALSE;
1496 if (mangle_stdcall > 0)
1497 need_param_count = TRUE;
1499 for (mangle_param_count = 0; mangle_param_count <= (need_param_count ? 256 : 0); mangle_param_count += 4) {
1504 mangled_name = (char*)import;
1505 switch (piinfo->piflags & PINVOKE_ATTRIBUTE_CHAR_SET_MASK) {
1506 case PINVOKE_ATTRIBUTE_CHAR_SET_UNICODE:
1507 /* Try the mangled name first */
1508 if (mangle_charset == 0)
1509 mangled_name = g_strconcat (import, "W", NULL);
1511 case PINVOKE_ATTRIBUTE_CHAR_SET_AUTO:
1513 if (mangle_charset == 0)
1514 mangled_name = g_strconcat (import, "W", NULL);
1516 /* Try the mangled name last */
1517 if (mangle_charset == 1)
1518 mangled_name = g_strconcat (import, "A", NULL);
1521 case PINVOKE_ATTRIBUTE_CHAR_SET_ANSI:
1523 /* Try the mangled name last */
1524 if (mangle_charset == 1)
1525 mangled_name = g_strconcat (import, "A", NULL);
1530 if (mangle_param_count == 0)
1531 param_count = mono_method_signature (method)->param_count * sizeof (gpointer);
1533 /* Try brute force, since it would be very hard to compute the stack usage correctly */
1534 param_count = mangle_param_count;
1536 /* Try the stdcall mangled name */
1538 * gcc under windows creates mangled names without the underscore, but MS.NET
1539 * doesn't support it, so we doesn't support it either.
1541 if (mangle_stdcall == 1)
1542 mangled_name2 = g_strdup_printf ("_%s@%d", mangled_name, param_count);
1544 mangled_name2 = mangled_name;
1546 mangled_name2 = mangled_name;
1549 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1550 "Probing '%s'.", mangled_name2);
1552 error_msg = mono_dl_symbol (module, mangled_name2, &addr);
1555 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1556 "Found as '%s'.", mangled_name2);
1558 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1559 "Could not find '%s' due to '%s'.", mangled_name2, error_msg);
1564 if (mangled_name != mangled_name2)
1565 g_free (mangled_name2);
1566 if (mangled_name != import)
1567 g_free (mangled_name);
1576 *exc_class = "EntryPointNotFoundException";
1581 piinfo->addr = addr;
1586 * LOCKING: assumes the loader lock to be taken.
1589 mono_get_method_from_token (MonoImage *image, guint32 token, MonoClass *klass,
1590 MonoGenericContext *context, gboolean *used_context, MonoError *error)
1593 int table = mono_metadata_token_table (token);
1594 int idx = mono_metadata_token_index (token);
1595 MonoTableInfo *tables = image->tables;
1596 MonoGenericContainer *generic_container = NULL, *container = NULL;
1597 const char *sig = NULL;
1598 guint32 cols [MONO_TYPEDEF_SIZE];
1602 if (image_is_dynamic (image)) {
1603 MonoClass *handle_class;
1605 result = (MonoMethod *)mono_lookup_dynamic_token_class (image, token, TRUE, &handle_class, context, error);
1606 mono_error_assert_ok (error);
1608 // This checks the memberref type as well
1609 if (result && handle_class != mono_defaults.methodhandle_class) {
1610 mono_error_set_bad_image (error, image, "Bad method token 0x%08x on dynamic image", token);
1616 if (table != MONO_TABLE_METHOD) {
1617 if (table == MONO_TABLE_METHODSPEC) {
1618 if (used_context) *used_context = TRUE;
1619 return method_from_methodspec (image, context, idx, error);
1621 if (table != MONO_TABLE_MEMBERREF) {
1622 mono_error_set_bad_image (error, image, "Bad method token 0x%08x.", token);
1625 return method_from_memberref (image, idx, context, used_context, error);
1628 if (used_context) *used_context = FALSE;
1630 if (idx > image->tables [MONO_TABLE_METHOD].rows) {
1631 mono_error_set_bad_image (error, image, "Bad method token 0x%08x (out of bounds).", token);
1636 guint32 type = mono_metadata_typedef_from_method (image, token);
1638 mono_error_set_bad_image (error, image, "Bad method token 0x%08x (could not find corresponding typedef).", token);
1641 klass = mono_class_get_checked (image, MONO_TOKEN_TYPE_DEF | type, error);
1646 mono_metadata_decode_row (&image->tables [MONO_TABLE_METHOD], idx - 1, cols, 6);
1648 if ((cols [2] & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
1649 (cols [1] & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL)) {
1650 result = (MonoMethod *)mono_image_alloc0 (image, sizeof (MonoMethodPInvoke));
1652 result = (MonoMethod *)mono_image_alloc0 (image, sizeof (MonoMethod));
1653 methods_size += sizeof (MonoMethod);
1656 mono_stats.method_count ++;
1659 result->klass = klass;
1660 result->flags = cols [2];
1661 result->iflags = cols [1];
1662 result->token = token;
1663 result->name = mono_metadata_string_heap (image, cols [3]);
1665 if (!sig) /* already taken from the methodref */
1666 sig = mono_metadata_blob_heap (image, cols [4]);
1667 /* size = */ mono_metadata_decode_blob_size (sig, &sig);
1669 container = mono_class_try_get_generic_container (klass);
1672 * load_generic_params does a binary search so only call it if the method
1676 generic_container = mono_metadata_load_generic_params (image, token, container);
1678 if (generic_container) {
1679 result->is_generic = TRUE;
1680 generic_container->owner.method = result;
1681 generic_container->is_anonymous = FALSE; // Method is now known, container is no longer anonymous
1682 /*FIXME put this before the image alloc*/
1683 if (!mono_metadata_load_generic_param_constraints_checked (image, token, generic_container, error))
1686 container = generic_container;
1689 if (cols [1] & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) {
1690 if (result->klass == mono_defaults.string_class && !strcmp (result->name, ".ctor"))
1691 result->string_ctor = 1;
1692 } else if (cols [2] & METHOD_ATTRIBUTE_PINVOKE_IMPL) {
1693 MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *)result;
1696 /* IJW is P/Invoke with a predefined function pointer. */
1697 if (image->is_module_handle && (cols [1] & METHOD_IMPL_ATTRIBUTE_NATIVE)) {
1698 piinfo->addr = mono_image_rva_map (image, cols [0]);
1699 g_assert (piinfo->addr);
1702 piinfo->implmap_idx = mono_metadata_implmap_from_method (image, idx - 1);
1703 /* Native methods can have no map. */
1704 if (piinfo->implmap_idx)
1705 piinfo->piflags = mono_metadata_decode_row_col (&tables [MONO_TABLE_IMPLMAP], piinfo->implmap_idx - 1, MONO_IMPLMAP_FLAGS);
1708 if (generic_container)
1709 mono_method_set_generic_container (result, generic_container);
1715 mono_get_method (MonoImage *image, guint32 token, MonoClass *klass)
1718 MonoMethod *result = mono_get_method_checked (image, token, klass, NULL, &error);
1719 mono_error_cleanup (&error);
1724 mono_get_method_full (MonoImage *image, guint32 token, MonoClass *klass,
1725 MonoGenericContext *context)
1728 MonoMethod *result = mono_get_method_checked (image, token, klass, context, &error);
1729 mono_error_cleanup (&error);
1734 mono_get_method_checked (MonoImage *image, guint32 token, MonoClass *klass, MonoGenericContext *context, MonoError *error)
1736 MonoMethod *result = NULL;
1737 gboolean used_context = FALSE;
1739 /* We do everything inside the lock to prevent creation races */
1743 mono_image_lock (image);
1745 if (mono_metadata_token_table (token) == MONO_TABLE_METHOD) {
1746 if (!image->method_cache)
1747 image->method_cache = g_hash_table_new (NULL, NULL);
1748 result = (MonoMethod *)g_hash_table_lookup (image->method_cache, GINT_TO_POINTER (mono_metadata_token_index (token)));
1749 } else if (!image_is_dynamic (image)) {
1750 if (!image->methodref_cache)
1751 image->methodref_cache = g_hash_table_new (NULL, NULL);
1752 result = (MonoMethod *)g_hash_table_lookup (image->methodref_cache, GINT_TO_POINTER (token));
1754 mono_image_unlock (image);
1760 result = mono_get_method_from_token (image, token, klass, context, &used_context, error);
1764 mono_image_lock (image);
1765 if (!used_context && !result->is_inflated) {
1766 MonoMethod *result2 = NULL;
1768 if (mono_metadata_token_table (token) == MONO_TABLE_METHOD)
1769 result2 = (MonoMethod *)g_hash_table_lookup (image->method_cache, GINT_TO_POINTER (mono_metadata_token_index (token)));
1770 else if (!image_is_dynamic (image))
1771 result2 = (MonoMethod *)g_hash_table_lookup (image->methodref_cache, GINT_TO_POINTER (token));
1774 mono_image_unlock (image);
1778 if (mono_metadata_token_table (token) == MONO_TABLE_METHOD)
1779 g_hash_table_insert (image->method_cache, GINT_TO_POINTER (mono_metadata_token_index (token)), result);
1780 else if (!image_is_dynamic (image))
1781 g_hash_table_insert (image->methodref_cache, GINT_TO_POINTER (token), result);
1784 mono_image_unlock (image);
1790 get_method_constrained (MonoImage *image, MonoMethod *method, MonoClass *constrained_class, MonoGenericContext *context, MonoError *error)
1793 MonoClass *ic = NULL;
1794 MonoGenericContext *method_context = NULL;
1795 MonoMethodSignature *sig, *original_sig;
1799 mono_class_init (constrained_class);
1800 original_sig = sig = mono_method_signature_checked (method, error);
1805 if (method->is_inflated && sig->generic_param_count) {
1806 MonoMethodInflated *imethod = (MonoMethodInflated *) method;
1807 sig = mono_method_signature_checked (imethod->declaring, error); /*We assume that if the inflated method signature is valid, the declaring method is too*/
1810 method_context = mono_method_get_context (method);
1814 * We must inflate the signature with the class instantiation to work on
1815 * cases where a class inherit from a generic type and the override replaces
1816 * any type argument which a concrete type. See #325283.
1818 if (method_context->class_inst) {
1819 MonoGenericContext ctx;
1820 ctx.method_inst = NULL;
1821 ctx.class_inst = method_context->class_inst;
1822 /*Fixme, property propagate this error*/
1823 sig = inflate_generic_signature_checked (method->klass->image, sig, &ctx, error);
1829 if ((constrained_class != method->klass) && (MONO_CLASS_IS_INTERFACE (method->klass)))
1832 result = find_method (constrained_class, ic, method->name, sig, constrained_class, error);
1833 if (sig != original_sig)
1834 mono_metadata_free_inflated_signature (sig);
1839 if (method_context) {
1840 result = mono_class_inflate_generic_method_checked (result, method_context, error);
1849 mono_get_method_constrained_with_method (MonoImage *image, MonoMethod *method, MonoClass *constrained_class,
1850 MonoGenericContext *context, MonoError *error)
1854 return get_method_constrained (image, method, constrained_class, context, error);
1858 * mono_get_method_constrained:
1860 * This is used when JITing the `constrained.' opcode.
1862 * This returns two values: the contrained method, which has been inflated
1863 * as the function return value; And the original CIL-stream method as
1864 * declared in cil_method. The later is used for verification.
1867 mono_get_method_constrained (MonoImage *image, guint32 token, MonoClass *constrained_class,
1868 MonoGenericContext *context, MonoMethod **cil_method)
1871 MonoMethod *result = mono_get_method_constrained_checked (image, token, constrained_class, context, cil_method, &error);
1872 mono_error_cleanup (&error);
1877 mono_get_method_constrained_checked (MonoImage *image, guint32 token, MonoClass *constrained_class, MonoGenericContext *context, MonoMethod **cil_method, MonoError *error)
1881 *cil_method = mono_get_method_from_token (image, token, NULL, context, NULL, error);
1885 return get_method_constrained (image, *cil_method, constrained_class, context, error);
1889 mono_free_method (MonoMethod *method)
1891 if (mono_profiler_get_events () & MONO_PROFILE_METHOD_EVENTS)
1892 mono_profiler_method_free (method);
1894 /* FIXME: This hack will go away when the profiler will support freeing methods */
1895 if (mono_profiler_get_events () != MONO_PROFILE_NONE)
1898 if (method->signature) {
1900 * FIXME: This causes crashes because the types inside signatures and
1901 * locals are shared.
1903 /* mono_metadata_free_method_signature (method->signature); */
1904 /* g_free (method->signature); */
1907 if (method_is_dynamic (method)) {
1908 MonoMethodWrapper *mw = (MonoMethodWrapper*)method;
1911 mono_marshal_free_dynamic_wrappers (method);
1913 mono_image_property_remove (method->klass->image, method);
1915 g_free ((char*)method->name);
1917 g_free ((char*)mw->header->code);
1918 for (i = 0; i < mw->header->num_locals; ++i)
1919 g_free (mw->header->locals [i]);
1920 g_free (mw->header->clauses);
1921 g_free (mw->header);
1923 g_free (mw->method_data);
1924 g_free (method->signature);
1930 mono_method_get_param_names (MonoMethod *method, const char **names)
1934 MonoTableInfo *methodt;
1935 MonoTableInfo *paramt;
1936 MonoMethodSignature *signature;
1939 if (method->is_inflated)
1940 method = ((MonoMethodInflated *) method)->declaring;
1942 signature = mono_method_signature (method);
1943 /*FIXME this check is somewhat redundant since the caller usally will have to get the signature to figure out the
1944 number of arguments and allocate a properly sized array. */
1945 if (signature == NULL)
1948 if (!signature->param_count)
1951 for (i = 0; i < signature->param_count; ++i)
1954 klass = method->klass;
1958 mono_class_init (klass);
1960 if (image_is_dynamic (klass->image)) {
1961 MonoReflectionMethodAux *method_aux =
1962 (MonoReflectionMethodAux *)g_hash_table_lookup (
1963 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
1964 if (method_aux && method_aux->param_names) {
1965 for (i = 0; i < mono_method_signature (method)->param_count; ++i)
1966 if (method_aux->param_names [i + 1])
1967 names [i] = method_aux->param_names [i + 1];
1972 if (method->wrapper_type) {
1973 char **pnames = NULL;
1975 mono_image_lock (klass->image);
1976 if (klass->image->wrapper_param_names)
1977 pnames = (char **)g_hash_table_lookup (klass->image->wrapper_param_names, method);
1978 mono_image_unlock (klass->image);
1981 for (i = 0; i < signature->param_count; ++i)
1982 names [i] = pnames [i];
1987 methodt = &klass->image->tables [MONO_TABLE_METHOD];
1988 paramt = &klass->image->tables [MONO_TABLE_PARAM];
1989 idx = mono_method_get_index (method);
1991 guint32 cols [MONO_PARAM_SIZE];
1994 param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
1996 if (idx < methodt->rows)
1997 lastp = mono_metadata_decode_row_col (methodt, idx, MONO_METHOD_PARAMLIST);
1999 lastp = paramt->rows + 1;
2000 for (i = param_index; i < lastp; ++i) {
2001 mono_metadata_decode_row (paramt, i -1, cols, MONO_PARAM_SIZE);
2002 if (cols [MONO_PARAM_SEQUENCE] && cols [MONO_PARAM_SEQUENCE] <= signature->param_count) /* skip return param spec and bounds check*/
2003 names [cols [MONO_PARAM_SEQUENCE] - 1] = mono_metadata_string_heap (klass->image, cols [MONO_PARAM_NAME]);
2009 mono_method_get_param_token (MonoMethod *method, int index)
2011 MonoClass *klass = method->klass;
2012 MonoTableInfo *methodt;
2015 mono_class_init (klass);
2017 if (image_is_dynamic (klass->image))
2018 g_assert_not_reached ();
2020 methodt = &klass->image->tables [MONO_TABLE_METHOD];
2021 idx = mono_method_get_index (method);
2023 guint param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
2027 return mono_metadata_make_token (MONO_TABLE_PARAM, 0);
2029 return mono_metadata_make_token (MONO_TABLE_PARAM, param_index + index);
2036 mono_method_get_marshal_info (MonoMethod *method, MonoMarshalSpec **mspecs)
2039 MonoClass *klass = method->klass;
2040 MonoTableInfo *methodt;
2041 MonoTableInfo *paramt;
2042 MonoMethodSignature *signature;
2045 signature = mono_method_signature (method);
2046 g_assert (signature); /*FIXME there is no way to signal error from this function*/
2048 for (i = 0; i < signature->param_count + 1; ++i)
2051 if (image_is_dynamic (method->klass->image)) {
2052 MonoReflectionMethodAux *method_aux =
2053 (MonoReflectionMethodAux *)g_hash_table_lookup (
2054 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
2055 if (method_aux && method_aux->param_marshall) {
2056 MonoMarshalSpec **dyn_specs = method_aux->param_marshall;
2057 for (i = 0; i < signature->param_count + 1; ++i)
2058 if (dyn_specs [i]) {
2059 mspecs [i] = g_new0 (MonoMarshalSpec, 1);
2060 memcpy (mspecs [i], dyn_specs [i], sizeof (MonoMarshalSpec));
2061 mspecs [i]->data.custom_data.custom_name = g_strdup (dyn_specs [i]->data.custom_data.custom_name);
2062 mspecs [i]->data.custom_data.cookie = g_strdup (dyn_specs [i]->data.custom_data.cookie);
2068 mono_class_init (klass);
2070 methodt = &klass->image->tables [MONO_TABLE_METHOD];
2071 paramt = &klass->image->tables [MONO_TABLE_PARAM];
2072 idx = mono_method_get_index (method);
2074 guint32 cols [MONO_PARAM_SIZE];
2075 guint param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
2077 if (idx < methodt->rows)
2078 lastp = mono_metadata_decode_row_col (methodt, idx, MONO_METHOD_PARAMLIST);
2080 lastp = paramt->rows + 1;
2082 for (i = param_index; i < lastp; ++i) {
2083 mono_metadata_decode_row (paramt, i -1, cols, MONO_PARAM_SIZE);
2085 if (cols [MONO_PARAM_FLAGS] & PARAM_ATTRIBUTE_HAS_FIELD_MARSHAL && cols [MONO_PARAM_SEQUENCE] <= signature->param_count) {
2087 tp = mono_metadata_get_marshal_info (klass->image, i - 1, FALSE);
2089 mspecs [cols [MONO_PARAM_SEQUENCE]]= mono_metadata_parse_marshal_spec (klass->image, tp);
2098 mono_method_has_marshal_info (MonoMethod *method)
2101 MonoClass *klass = method->klass;
2102 MonoTableInfo *methodt;
2103 MonoTableInfo *paramt;
2106 if (image_is_dynamic (method->klass->image)) {
2107 MonoReflectionMethodAux *method_aux =
2108 (MonoReflectionMethodAux *)g_hash_table_lookup (
2109 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
2110 MonoMarshalSpec **dyn_specs = method_aux->param_marshall;
2112 for (i = 0; i < mono_method_signature (method)->param_count + 1; ++i)
2119 mono_class_init (klass);
2121 methodt = &klass->image->tables [MONO_TABLE_METHOD];
2122 paramt = &klass->image->tables [MONO_TABLE_PARAM];
2123 idx = mono_method_get_index (method);
2125 guint32 cols [MONO_PARAM_SIZE];
2126 guint param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
2128 if (idx + 1 < methodt->rows)
2129 lastp = mono_metadata_decode_row_col (methodt, idx, MONO_METHOD_PARAMLIST);
2131 lastp = paramt->rows + 1;
2133 for (i = param_index; i < lastp; ++i) {
2134 mono_metadata_decode_row (paramt, i -1, cols, MONO_PARAM_SIZE);
2136 if (cols [MONO_PARAM_FLAGS] & PARAM_ATTRIBUTE_HAS_FIELD_MARSHAL)
2145 mono_method_get_wrapper_data (MonoMethod *method, guint32 id)
2148 g_assert (method != NULL);
2149 g_assert (method->wrapper_type != MONO_WRAPPER_NONE);
2151 data = (void **)((MonoMethodWrapper *)method)->method_data;
2152 g_assert (data != NULL);
2153 g_assert (id <= GPOINTER_TO_UINT (*data));
2160 } StackWalkUserData;
2163 stack_walk_adapter (MonoStackFrameInfo *frame, MonoContext *ctx, gpointer data)
2165 StackWalkUserData *d = (StackWalkUserData *)data;
2167 switch (frame->type) {
2168 case FRAME_TYPE_DEBUGGER_INVOKE:
2169 case FRAME_TYPE_MANAGED_TO_NATIVE:
2170 case FRAME_TYPE_TRAMPOLINE:
2172 case FRAME_TYPE_MANAGED:
2173 g_assert (frame->ji);
2174 return d->func (frame->actual_method, frame->native_offset, frame->il_offset, frame->managed, d->user_data);
2177 g_assert_not_reached ();
2183 mono_stack_walk (MonoStackWalk func, gpointer user_data)
2185 StackWalkUserData ud = { func, user_data };
2186 mono_get_eh_callbacks ()->mono_walk_stack_with_ctx (stack_walk_adapter, NULL, MONO_UNWIND_LOOKUP_ALL, &ud);
2190 mono_stack_walk_no_il (MonoStackWalk func, gpointer user_data)
2192 StackWalkUserData ud = { func, user_data };
2193 mono_get_eh_callbacks ()->mono_walk_stack_with_ctx (stack_walk_adapter, NULL, MONO_UNWIND_DEFAULT, &ud);
2197 MonoStackWalkAsyncSafe func;
2199 } AsyncStackWalkUserData;
2203 async_stack_walk_adapter (MonoStackFrameInfo *frame, MonoContext *ctx, gpointer data)
2205 AsyncStackWalkUserData *d = (AsyncStackWalkUserData *)data;
2207 switch (frame->type) {
2208 case FRAME_TYPE_DEBUGGER_INVOKE:
2209 case FRAME_TYPE_MANAGED_TO_NATIVE:
2210 case FRAME_TYPE_TRAMPOLINE:
2212 case FRAME_TYPE_MANAGED:
2215 if (frame->ji->async) {
2216 return d->func (NULL, frame->domain, frame->ji->code_start, frame->native_offset, d->user_data);
2218 return d->func (frame->actual_method, frame->domain, frame->ji->code_start, frame->native_offset, d->user_data);
2222 g_assert_not_reached ();
2229 * mono_stack_walk_async_safe:
2231 * Async safe version callable from signal handlers.
2234 mono_stack_walk_async_safe (MonoStackWalkAsyncSafe func, void *initial_sig_context, void *user_data)
2237 AsyncStackWalkUserData ud = { func, user_data };
2239 mono_sigctx_to_monoctx (initial_sig_context, &ctx);
2240 mono_get_eh_callbacks ()->mono_walk_stack_with_ctx (async_stack_walk_adapter, &ctx, MONO_UNWIND_SIGNAL_SAFE, &ud);
2244 last_managed (MonoMethod *m, gint no, gint ilo, gboolean managed, gpointer data)
2246 MonoMethod **dest = (MonoMethod **)data;
2248 /*g_print ("In %s::%s [%d] [%d]\n", m->klass->name, m->name, no, ilo);*/
2254 mono_method_get_last_managed (void)
2256 MonoMethod *m = NULL;
2257 mono_stack_walk_no_il (last_managed, &m);
2261 static gboolean loader_lock_track_ownership = FALSE;
2266 * See docs/thread-safety.txt for the locking strategy.
2269 mono_loader_lock (void)
2271 mono_locks_coop_acquire (&loader_mutex, LoaderLock);
2272 if (G_UNLIKELY (loader_lock_track_ownership)) {
2273 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));
2278 mono_loader_unlock (void)
2280 mono_locks_coop_release (&loader_mutex, LoaderLock);
2281 if (G_UNLIKELY (loader_lock_track_ownership)) {
2282 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));
2287 * mono_loader_lock_track_ownership:
2289 * Set whenever the runtime should track ownership of the loader lock. If set to TRUE,
2290 * the mono_loader_lock_is_owned_by_self () can be called to query whenever the current
2291 * thread owns the loader lock.
2294 mono_loader_lock_track_ownership (gboolean track)
2296 loader_lock_track_ownership = track;
2300 * mono_loader_lock_is_owned_by_self:
2302 * Return whenever the current thread owns the loader lock.
2303 * This is useful to avoid blocking operations while holding the loader lock.
2306 mono_loader_lock_is_owned_by_self (void)
2308 g_assert (loader_lock_track_ownership);
2310 return GPOINTER_TO_UINT (mono_native_tls_get_value (loader_lock_nest_id)) > 0;
2314 * mono_loader_lock_if_inited:
2316 * Acquire the loader lock if it has been initialized, no-op otherwise. This can
2317 * be used in runtime initialization code which can be executed before mono_loader_init ().
2320 mono_loader_lock_if_inited (void)
2322 if (loader_lock_inited)
2323 mono_loader_lock ();
2327 mono_loader_unlock_if_inited (void)
2329 if (loader_lock_inited)
2330 mono_loader_unlock ();
2334 * mono_method_signature_checked:
2336 * Return the signature of the method M. On failure, returns NULL, and ERR is set.
2338 MonoMethodSignature*
2339 mono_method_signature_checked (MonoMethod *m, MonoError *error)
2344 gboolean can_cache_signature;
2345 MonoGenericContainer *container;
2346 MonoMethodSignature *signature = NULL, *sig2;
2349 /* We need memory barriers below because of the double-checked locking pattern */
2354 return m->signature;
2356 img = m->klass->image;
2358 if (m->is_inflated) {
2359 MonoMethodInflated *imethod = (MonoMethodInflated *) m;
2360 /* the lock is recursive */
2361 signature = mono_method_signature (imethod->declaring);
2362 signature = inflate_generic_signature_checked (imethod->declaring->klass->image, signature, mono_method_get_context (m), error);
2363 if (!mono_error_ok (error))
2366 inflated_signatures_size += mono_metadata_signature_size (signature);
2368 mono_image_lock (img);
2370 mono_memory_barrier ();
2372 m->signature = signature;
2374 mono_image_unlock (img);
2376 return m->signature;
2379 g_assert (mono_metadata_token_table (m->token) == MONO_TABLE_METHOD);
2380 idx = mono_metadata_token_index (m->token);
2382 sig = mono_metadata_blob_heap (img, sig_offset = mono_metadata_decode_row_col (&img->tables [MONO_TABLE_METHOD], idx - 1, MONO_METHOD_SIGNATURE));
2384 g_assert (!mono_class_is_ginst (m->klass));
2385 container = mono_method_get_generic_container (m);
2387 container = mono_class_try_get_generic_container (m->klass);
2389 /* Generic signatures depend on the container so they cannot be cached */
2390 /* icall/pinvoke signatures cannot be cached cause we modify them below */
2391 can_cache_signature = !(m->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && !(m->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) && !container;
2393 /* If the method has parameter attributes, that can modify the signature */
2394 if (mono_metadata_method_has_param_attrs (img, idx))
2395 can_cache_signature = FALSE;
2397 if (can_cache_signature) {
2398 mono_image_lock (img);
2399 signature = (MonoMethodSignature *)g_hash_table_lookup (img->method_signatures, sig);
2400 mono_image_unlock (img);
2404 const char *sig_body;
2405 /*TODO we should cache the failure result somewhere*/
2406 if (!mono_verifier_verify_method_signature (img, sig_offset, error))
2409 /* size = */ mono_metadata_decode_blob_size (sig, &sig_body);
2411 signature = mono_metadata_parse_method_signature_full (img, container, idx, sig_body, NULL, error);
2415 if (can_cache_signature) {
2416 mono_image_lock (img);
2417 sig2 = (MonoMethodSignature *)g_hash_table_lookup (img->method_signatures, sig);
2419 g_hash_table_insert (img->method_signatures, (gpointer)sig, signature);
2420 mono_image_unlock (img);
2423 signatures_size += mono_metadata_signature_size (signature);
2426 /* Verify metadata consistency */
2427 if (signature->generic_param_count) {
2428 if (!container || !container->is_method) {
2429 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);
2432 if (container->type_argc != signature->generic_param_count) {
2433 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);
2436 } else if (container && container->is_method && container->type_argc) {
2437 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);
2440 if (m->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) {
2441 signature->pinvoke = 1;
2444 * On Windows the default pinvoke calling convention is STDCALL but
2445 * we need CDECL since this is actually an icall.
2447 signature->call_convention = MONO_CALL_C;
2449 } else if (m->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) {
2450 MonoCallConvention conv = (MonoCallConvention)0;
2451 MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *)m;
2452 signature->pinvoke = 1;
2454 switch (piinfo->piflags & PINVOKE_ATTRIBUTE_CALL_CONV_MASK) {
2455 case 0: /* no call conv, so using default */
2456 case PINVOKE_ATTRIBUTE_CALL_CONV_WINAPI:
2457 conv = MONO_CALL_DEFAULT;
2459 case PINVOKE_ATTRIBUTE_CALL_CONV_CDECL:
2462 case PINVOKE_ATTRIBUTE_CALL_CONV_STDCALL:
2463 conv = MONO_CALL_STDCALL;
2465 case PINVOKE_ATTRIBUTE_CALL_CONV_THISCALL:
2466 conv = MONO_CALL_THISCALL;
2468 case PINVOKE_ATTRIBUTE_CALL_CONV_FASTCALL:
2469 conv = MONO_CALL_FASTCALL;
2471 case PINVOKE_ATTRIBUTE_CALL_CONV_GENERIC:
2472 case PINVOKE_ATTRIBUTE_CALL_CONV_GENERICINST:
2474 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);
2477 signature->call_convention = conv;
2480 mono_image_lock (img);
2482 mono_memory_barrier ();
2484 m->signature = signature;
2486 mono_image_unlock (img);
2488 return m->signature;
2492 * mono_method_signature:
2494 * Return the signature of the method M. On failure, returns NULL.
2496 MonoMethodSignature*
2497 mono_method_signature (MonoMethod *m)
2500 MonoMethodSignature *sig;
2502 sig = mono_method_signature_checked (m, &error);
2504 char *type_name = mono_type_get_full_name (m->klass);
2505 g_warning ("Could not load signature of %s:%s due to: %s", type_name, m->name, mono_error_get_message (&error));
2507 mono_error_cleanup (&error);
2514 mono_method_get_name (MonoMethod *method)
2516 return method->name;
2520 mono_method_get_class (MonoMethod *method)
2522 return method->klass;
2526 mono_method_get_token (MonoMethod *method)
2528 return method->token;
2532 mono_method_get_header_checked (MonoMethod *method, MonoError *error)
2538 MonoGenericContainer *container;
2541 img = method->klass->image;
2543 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)) {
2544 mono_error_set_bad_image (error, img, "Method has no body");
2548 if (method->is_inflated) {
2549 MonoMethodInflated *imethod = (MonoMethodInflated *) method;
2550 MonoMethodHeader *header, *iheader;
2552 header = mono_method_get_header_checked (imethod->declaring, error);
2556 iheader = inflate_generic_header (header, mono_method_get_context (method), error);
2557 mono_metadata_free_mh (header);
2565 if (method->wrapper_type != MONO_WRAPPER_NONE || method->sre_method) {
2566 MonoMethodWrapper *mw = (MonoMethodWrapper *)method;
2567 g_assert (mw->header);
2572 * We don't need locks here: the new header is allocated from malloc memory
2573 * and is not stored anywhere in the runtime, the user needs to free it.
2575 g_assert (mono_metadata_token_table (method->token) == MONO_TABLE_METHOD);
2576 idx = mono_metadata_token_index (method->token);
2577 rva = mono_metadata_decode_row_col (&img->tables [MONO_TABLE_METHOD], idx - 1, MONO_METHOD_RVA);
2579 if (!mono_verifier_verify_method_header (img, rva, NULL)) {
2580 mono_error_set_bad_image (error, img, "Invalid method header, failed verification");
2584 loc = mono_image_rva_map (img, rva);
2586 mono_error_set_bad_image (error, img, "Method has zero rva");
2591 * When parsing the types of local variables, we must pass any container available
2592 * to ensure that both VAR and MVAR will get the right owner.
2594 container = mono_method_get_generic_container (method);
2596 container = mono_class_try_get_generic_container (method->klass);
2597 return mono_metadata_parse_mh_full (img, container, (const char *)loc, error);
2601 mono_method_get_header (MonoMethod *method)
2604 MonoMethodHeader *header = mono_method_get_header_checked (method, &error);
2605 mono_error_cleanup (&error);
2611 mono_method_get_flags (MonoMethod *method, guint32 *iflags)
2614 *iflags = method->iflags;
2615 return method->flags;
2619 * Find the method index in the metadata methodDef table.
2622 mono_method_get_index (MonoMethod *method)
2624 MonoClass *klass = method->klass;
2628 /* constructed array methods are not in the MethodDef table */
2632 return mono_metadata_token_index (method->token);
2634 mono_class_setup_methods (klass);
2635 if (mono_class_has_failure (klass))
2637 int first_idx = mono_class_get_first_method_idx (klass);
2638 int mcount = mono_class_get_method_count (klass);
2639 for (i = 0; i < mcount; ++i) {
2640 if (method == klass->methods [i]) {
2641 if (klass->image->uncompressed_metadata)
2642 return mono_metadata_translate_token_index (klass->image, MONO_TABLE_METHOD, first_idx + i + 1);
2644 return first_idx + i + 1;