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 '%u' 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 '%u' 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 && !mono_class_is_ginst (field->parent) && !mono_class_is_gtd (field->parent)) {
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: !mono_class_is_ginst (from_class) condition causes test failures. */
366 if (klass->type_token && !image_is_dynamic (klass->image) && !klass->methods && !klass->rank && klass == from_class && !mono_class_is_ginst (from_class)) {
367 int first_idx = mono_class_get_first_method_idx (klass);
368 for (i = 0; i < klass->method.count; ++i) {
369 guint32 cols [MONO_METHOD_SIZE];
372 MonoMethodSignature *other_sig;
374 mono_metadata_decode_table_row (klass->image, MONO_TABLE_METHOD, first_idx + i, cols, MONO_METHOD_SIZE);
376 m_name = mono_metadata_string_heap (klass->image, cols [MONO_METHOD_NAME]);
378 if (!((fqname && !strcmp (m_name, fqname)) ||
379 (qname && !strcmp (m_name, qname)) ||
380 (name && !strcmp (m_name, name))))
383 method = mono_get_method_checked (klass->image, MONO_TOKEN_METHOD_DEF | (first_idx + i + 1), klass, NULL, error);
384 if (!mono_error_ok (error)) //bail out if we hit a loader error
387 other_sig = mono_method_signature_checked (method, error);
388 if (!mono_error_ok (error)) //bail out if we hit a loader error
390 if (other_sig && (sig->call_convention != MONO_CALL_VARARG) && mono_metadata_signature_equal (sig, other_sig))
396 mono_class_setup_methods (klass); /* FIXME don't swallow the error here. */
398 We can't fail lookup of methods otherwise the runtime will fail with MissingMethodException instead of TypeLoadException.
399 See mono/tests/generic-type-load-exception.2.il
400 FIXME we should better report this error to the caller
402 if (!klass->methods || mono_class_has_failure (klass)) {
403 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
407 for (i = 0; i < klass->method.count; ++i) {
408 MonoMethod *m = klass->methods [i];
409 MonoMethodSignature *msig;
411 /* We must cope with failing to load some of the types. */
415 if (!((fqname && !strcmp (m->name, fqname)) ||
416 (qname && !strcmp (m->name, qname)) ||
417 (name && !strcmp (m->name, name))))
419 msig = mono_method_signature_checked (m, error);
420 if (!mono_error_ok (error)) //bail out if we hit a loader error
426 if (sig->call_convention == MONO_CALL_VARARG) {
427 if (mono_metadata_signature_vararg_match (sig, msig))
430 if (mono_metadata_signature_equal (sig, msig))
435 if (i < klass->method.count)
436 return mono_class_get_method_by_index (from_class, i);
441 find_method (MonoClass *in_class, MonoClass *ic, const char* name, MonoMethodSignature *sig, MonoClass *from_class, MonoError *error)
444 char *qname, *fqname, *class_name;
445 gboolean is_interface;
446 MonoMethod *result = NULL;
447 MonoClass *initial_class = in_class;
449 mono_error_init (error);
450 is_interface = MONO_CLASS_IS_INTERFACE (in_class);
453 class_name = mono_type_get_name_full (&ic->byval_arg, MONO_TYPE_NAME_FORMAT_IL);
455 qname = g_strconcat (class_name, ".", name, NULL);
456 if (ic->name_space && ic->name_space [0])
457 fqname = g_strconcat (ic->name_space, ".", class_name, ".", name, NULL);
461 class_name = qname = fqname = NULL;
464 g_assert (from_class);
465 result = find_method_in_class (in_class, name, qname, fqname, sig, from_class, error);
466 if (result || !mono_error_ok (error))
469 if (name [0] == '.' && (!strcmp (name, ".ctor") || !strcmp (name, ".cctor")))
473 * This happens when we fail to lazily load the interfaces of one of the types.
474 * On such case we can't just bail out since user code depends on us trying harder.
476 if (from_class->interface_offsets_count != in_class->interface_offsets_count) {
477 in_class = in_class->parent;
478 from_class = from_class->parent;
482 for (i = 0; i < in_class->interface_offsets_count; i++) {
483 MonoClass *in_ic = in_class->interfaces_packed [i];
484 MonoClass *from_ic = from_class->interfaces_packed [i];
485 char *ic_qname, *ic_fqname, *ic_class_name;
487 ic_class_name = mono_type_get_name_full (&in_ic->byval_arg, MONO_TYPE_NAME_FORMAT_IL);
488 ic_qname = g_strconcat (ic_class_name, ".", name, NULL);
489 if (in_ic->name_space && in_ic->name_space [0])
490 ic_fqname = g_strconcat (in_ic->name_space, ".", ic_class_name, ".", name, NULL);
494 result = find_method_in_class (in_ic, ic ? name : NULL, ic_qname, ic_fqname, sig, from_ic, error);
495 g_free (ic_class_name);
498 if (result || !mono_error_ok (error))
502 in_class = in_class->parent;
503 from_class = from_class->parent;
505 g_assert (!in_class == !from_class);
508 result = find_method_in_class (mono_defaults.object_class, name, qname, fqname, sig, mono_defaults.object_class, error);
510 //we did not find the method
511 if (!result && mono_error_ok (error)) {
512 char *desc = mono_signature_get_desc (sig, FALSE);
513 mono_error_set_method_load (error, initial_class, name, "Could not find method with signature %s", desc);
524 static MonoMethodSignature*
525 inflate_generic_signature_checked (MonoImage *image, MonoMethodSignature *sig, MonoGenericContext *context, MonoError *error)
527 MonoMethodSignature *res;
531 mono_error_init (error);
535 res = (MonoMethodSignature *)g_malloc0 (MONO_SIZEOF_METHOD_SIGNATURE + ((gint32)sig->param_count) * sizeof (MonoType*));
536 res->param_count = sig->param_count;
537 res->sentinelpos = -1;
538 res->ret = mono_class_inflate_generic_type_checked (sig->ret, context, error);
539 if (!mono_error_ok (error))
541 is_open = mono_class_is_open_constructed_type (res->ret);
542 for (i = 0; i < sig->param_count; ++i) {
543 res->params [i] = mono_class_inflate_generic_type_checked (sig->params [i], context, error);
544 if (!mono_error_ok (error))
548 is_open = mono_class_is_open_constructed_type (res->params [i]);
550 res->hasthis = sig->hasthis;
551 res->explicit_this = sig->explicit_this;
552 res->call_convention = sig->call_convention;
553 res->pinvoke = sig->pinvoke;
554 res->generic_param_count = sig->generic_param_count;
555 res->sentinelpos = sig->sentinelpos;
556 res->has_type_parameters = is_open;
557 res->is_inflated = 1;
562 mono_metadata_free_type (res->ret);
563 for (i = 0; i < sig->param_count; ++i) {
565 mono_metadata_free_type (res->params [i]);
572 * mono_inflate_generic_signature:
574 * Inflate SIG with CONTEXT, and return a canonical copy. On error, set ERROR, and return NULL.
577 mono_inflate_generic_signature (MonoMethodSignature *sig, MonoGenericContext *context, MonoError *error)
579 MonoMethodSignature *res, *cached;
581 res = inflate_generic_signature_checked (NULL, sig, context, error);
582 if (!mono_error_ok (error))
584 cached = mono_metadata_get_inflated_signature (res, context);
586 mono_metadata_free_inflated_signature (res);
590 static MonoMethodHeader*
591 inflate_generic_header (MonoMethodHeader *header, MonoGenericContext *context, MonoError *error)
593 size_t locals_size = sizeof (gpointer) * header->num_locals;
594 size_t clauses_size = header->num_clauses * sizeof (MonoExceptionClause);
595 size_t header_size = MONO_SIZEOF_METHOD_HEADER + locals_size + clauses_size;
596 MonoMethodHeader *res = (MonoMethodHeader *)g_malloc0 (header_size);
597 res->num_locals = header->num_locals;
598 res->clauses = (MonoExceptionClause *) &res->locals [res->num_locals] ;
599 memcpy (res->clauses, header->clauses, clauses_size);
601 res->code = header->code;
602 res->code_size = header->code_size;
603 res->max_stack = header->max_stack;
604 res->num_clauses = header->num_clauses;
605 res->init_locals = header->init_locals;
607 res->is_transient = TRUE;
609 mono_error_init (error);
611 for (int i = 0; i < header->num_locals; ++i) {
612 res->locals [i] = mono_class_inflate_generic_type_checked (header->locals [i], context, error);
616 if (res->num_clauses) {
617 for (int i = 0; i < header->num_clauses; ++i) {
618 MonoExceptionClause *clause = &res->clauses [i];
619 if (clause->flags != MONO_EXCEPTION_CLAUSE_NONE)
621 clause->data.catch_class = mono_class_inflate_generic_class_checked (clause->data.catch_class, context, error);
633 * token is the method_ref/def/spec token used in a call IL instruction.
634 * @deprecated use the _checked variant
635 * Notes: runtime code MUST not use this function
638 mono_method_get_signature_full (MonoMethod *method, MonoImage *image, guint32 token, MonoGenericContext *context)
641 MonoMethodSignature *res = mono_method_get_signature_checked (method, image, token, context, &error);
642 mono_error_cleanup (&error);
647 mono_method_get_signature_checked (MonoMethod *method, MonoImage *image, guint32 token, MonoGenericContext *context, MonoError *error)
649 int table = mono_metadata_token_table (token);
650 int idx = mono_metadata_token_index (token);
652 guint32 cols [MONO_MEMBERREF_SIZE];
653 MonoMethodSignature *sig;
656 mono_error_init (error);
658 /* !table is for wrappers: we should really assign their own token to them */
659 if (!table || table == MONO_TABLE_METHOD)
660 return mono_method_signature_checked (method, error);
662 if (table == MONO_TABLE_METHODSPEC) {
663 /* the verifier (do_invoke_method) will turn the NULL into a verifier error */
664 if ((method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) || !method->is_inflated) {
665 mono_error_set_bad_image (error, image, "Method is a pinvoke or open generic");
669 return mono_method_signature_checked (method, error);
672 if (mono_class_is_ginst (method->klass))
673 return mono_method_signature_checked (method, error);
675 if (image_is_dynamic (image)) {
676 sig = mono_reflection_lookup_signature (image, method, token, error);
680 mono_metadata_decode_row (&image->tables [MONO_TABLE_MEMBERREF], idx-1, cols, MONO_MEMBERREF_SIZE);
681 sig_idx = cols [MONO_MEMBERREF_SIGNATURE];
683 sig = (MonoMethodSignature *)find_cached_memberref_sig (image, sig_idx);
685 if (!mono_verifier_verify_memberref_method_signature (image, sig_idx, NULL)) {
686 guint32 klass = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
687 const char *fname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
689 //FIXME include the verification error
690 mono_error_set_bad_image (error, image, "Bad method signature class token 0x%08x field name %s token 0x%08x", klass, fname, token);
694 ptr = mono_metadata_blob_heap (image, sig_idx);
695 mono_metadata_decode_blob_size (ptr, &ptr);
697 sig = mono_metadata_parse_method_signature_full (image, NULL, 0, ptr, NULL, error);
701 sig = (MonoMethodSignature *)cache_memberref_sig (image, sig_idx, sig);
703 /* FIXME: we probably should verify signature compat in the dynamic case too*/
704 if (!mono_verifier_is_sig_compatible (image, method, sig)) {
705 guint32 klass = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
706 const char *fname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
708 mono_error_set_bad_image (error, image, "Incompatible method signature class token 0x%08x field name %s token 0x%08x", klass, fname, token);
714 MonoMethodSignature *cached;
716 /* This signature is not owned by a MonoMethod, so need to cache */
717 sig = inflate_generic_signature_checked (image, sig, context, error);
718 if (!mono_error_ok (error))
721 cached = mono_metadata_get_inflated_signature (sig, context);
723 mono_metadata_free_inflated_signature (sig);
725 inflated_signatures_size += mono_metadata_signature_size (cached);
729 g_assert (mono_error_ok (error));
734 * token is the method_ref/def/spec token used in a call IL instruction.
735 * @deprecated use the _checked variant
736 * Notes: runtime code MUST not use this function
739 mono_method_get_signature (MonoMethod *method, MonoImage *image, guint32 token)
742 MonoMethodSignature *res = mono_method_get_signature_checked (method, image, token, NULL, &error);
743 mono_error_cleanup (&error);
747 /* this is only for the typespec array methods */
749 mono_method_search_in_array_class (MonoClass *klass, const char *name, MonoMethodSignature *sig)
753 mono_class_setup_methods (klass);
754 g_assert (!mono_class_has_failure (klass)); /*FIXME this should not fail, right?*/
755 for (i = 0; i < klass->method.count; ++i) {
756 MonoMethod *method = klass->methods [i];
757 if (strcmp (method->name, name) == 0 && sig->param_count == method->signature->param_count)
764 method_from_memberref (MonoImage *image, guint32 idx, MonoGenericContext *typespec_context,
765 gboolean *used_context, MonoError *error)
767 MonoClass *klass = NULL;
768 MonoMethod *method = NULL;
769 MonoTableInfo *tables = image->tables;
771 guint32 nindex, class_index, sig_idx;
773 MonoMethodSignature *sig;
776 mono_error_init (error);
778 mono_metadata_decode_row (&tables [MONO_TABLE_MEMBERREF], idx-1, cols, 3);
779 nindex = cols [MONO_MEMBERREF_CLASS] >> MONO_MEMBERREF_PARENT_BITS;
780 class_index = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
781 /*g_print ("methodref: 0x%x 0x%x %s\n", class, nindex,
782 mono_metadata_string_heap (m, cols [MONO_MEMBERREF_NAME]));*/
784 mname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
787 * Whether we actually used the `typespec_context' or not.
788 * This is used to tell our caller whether or not it's safe to insert the returned
789 * method into a cache.
792 *used_context = class_index == MONO_MEMBERREF_PARENT_TYPESPEC;
794 switch (class_index) {
795 case MONO_MEMBERREF_PARENT_TYPEREF:
796 klass = mono_class_from_typeref_checked (image, MONO_TOKEN_TYPE_REF | nindex, error);
800 case MONO_MEMBERREF_PARENT_TYPESPEC:
802 * Parse the TYPESPEC in the parent's context.
804 klass = mono_class_get_and_inflate_typespec_checked (image, MONO_TOKEN_TYPE_SPEC | nindex, typespec_context, error);
808 case MONO_MEMBERREF_PARENT_TYPEDEF:
809 klass = mono_class_get_checked (image, MONO_TOKEN_TYPE_DEF | nindex, error);
813 case MONO_MEMBERREF_PARENT_METHODDEF: {
814 method = mono_get_method_checked (image, MONO_TOKEN_METHOD_DEF | nindex, NULL, NULL, error);
820 mono_error_set_bad_image (error, image, "Memberref parent unknown: class: %d, index %d", class_index, nindex);
825 mono_class_init (klass);
827 sig_idx = cols [MONO_MEMBERREF_SIGNATURE];
829 if (!mono_verifier_verify_memberref_method_signature (image, sig_idx, NULL)) {
830 mono_error_set_method_load (error, klass, mname, "Verifier rejected method signature");
834 ptr = mono_metadata_blob_heap (image, sig_idx);
835 mono_metadata_decode_blob_size (ptr, &ptr);
837 sig = (MonoMethodSignature *)find_cached_memberref_sig (image, sig_idx);
839 sig = mono_metadata_parse_method_signature_full (image, NULL, 0, ptr, NULL, error);
843 sig = (MonoMethodSignature *)cache_memberref_sig (image, sig_idx, sig);
846 switch (class_index) {
847 case MONO_MEMBERREF_PARENT_TYPEREF:
848 case MONO_MEMBERREF_PARENT_TYPEDEF:
849 method = find_method (klass, NULL, mname, sig, klass, error);
852 case MONO_MEMBERREF_PARENT_TYPESPEC: {
855 type = &klass->byval_arg;
857 if (type->type != MONO_TYPE_ARRAY && type->type != MONO_TYPE_SZARRAY) {
858 MonoClass *in_class = mono_class_is_ginst (klass) ? mono_class_get_generic_class (klass)->container_class : klass;
859 method = find_method (in_class, NULL, mname, sig, klass, error);
863 /* we're an array and we created these methods already in klass in mono_class_init () */
864 method = mono_method_search_in_array_class (klass, mname, sig);
868 mono_error_set_bad_image (error, image,"Memberref parent unknown: class: %d, index %d", class_index, nindex);
872 if (!method && mono_error_ok (error)) {
873 char *msig = mono_signature_get_desc (sig, FALSE);
874 GString *s = g_string_new (mname);
875 if (sig->generic_param_count)
876 g_string_append_printf (s, "<[%d]>", sig->generic_param_count);
877 g_string_append_printf (s, "(%s)", msig);
879 msig = g_string_free (s, FALSE);
881 mono_error_set_method_load (error, klass, mname, "Could not find method %s", msig);
889 g_assert (!mono_error_ok (error));
894 method_from_methodspec (MonoImage *image, MonoGenericContext *context, guint32 idx, MonoError *error)
898 MonoTableInfo *tables = image->tables;
899 MonoGenericContext new_context;
900 MonoGenericInst *inst;
902 guint32 cols [MONO_METHODSPEC_SIZE];
903 guint32 token, nindex, param_count;
905 mono_error_init (error);
907 mono_metadata_decode_row (&tables [MONO_TABLE_METHODSPEC], idx - 1, cols, MONO_METHODSPEC_SIZE);
908 token = cols [MONO_METHODSPEC_METHOD];
909 nindex = token >> MONO_METHODDEFORREF_BITS;
911 if (!mono_verifier_verify_methodspec_signature (image, cols [MONO_METHODSPEC_SIGNATURE], NULL)) {
912 mono_error_set_bad_image (error, image, "Bad method signals signature 0x%08x", idx);
916 ptr = mono_metadata_blob_heap (image, cols [MONO_METHODSPEC_SIGNATURE]);
918 mono_metadata_decode_value (ptr, &ptr);
920 param_count = mono_metadata_decode_value (ptr, &ptr);
922 inst = mono_metadata_parse_generic_inst (image, NULL, param_count, ptr, &ptr, error);
926 if (context && inst->is_open) {
927 inst = mono_metadata_inflate_generic_inst (inst, context, error);
928 if (!mono_error_ok (error))
932 if ((token & MONO_METHODDEFORREF_MASK) == MONO_METHODDEFORREF_METHODDEF) {
933 method = mono_get_method_checked (image, MONO_TOKEN_METHOD_DEF | nindex, NULL, context, error);
937 method = method_from_memberref (image, nindex, context, NULL, error);
943 klass = method->klass;
945 if (mono_class_is_ginst (klass)) {
946 g_assert (method->is_inflated);
947 method = ((MonoMethodInflated *) method)->declaring;
950 new_context.class_inst = mono_class_is_ginst (klass) ? mono_class_get_generic_class (klass)->context.class_inst : NULL;
951 new_context.method_inst = inst;
953 method = mono_class_inflate_generic_method_full_checked (method, klass, &new_context, error);
965 static MonoDllMap *global_dll_map;
968 mono_dllmap_lookup_list (MonoDllMap *dll_map, const char *dll, const char* func, const char **rdll, const char **rfunc) {
976 global_loader_data_lock ();
979 * we use the first entry we find that matches, since entries from
980 * the config file are prepended to the list and we document that the
983 for (; dll_map; dll_map = dll_map->next) {
984 if (dll_map->dll [0] == 'i' && dll_map->dll [1] == ':') {
985 if (g_ascii_strcasecmp (dll_map->dll + 2, dll))
987 } else if (strcmp (dll_map->dll, dll)) {
990 if (!found && dll_map->target) {
991 *rdll = dll_map->target;
993 /* we don't quit here, because we could find a full
994 * entry that matches also function and that has priority.
997 if (dll_map->func && strcmp (dll_map->func, func) == 0) {
998 *rdll = dll_map->target;
999 *rfunc = dll_map->target_func;
1004 global_loader_data_unlock ();
1009 mono_dllmap_lookup (MonoImage *assembly, const char *dll, const char* func, const char **rdll, const char **rfunc)
1012 if (assembly && assembly->dll_map) {
1013 res = mono_dllmap_lookup_list (assembly->dll_map, dll, func, rdll, rfunc);
1017 return mono_dllmap_lookup_list (global_dll_map, dll, func, rdll, rfunc);
1021 * mono_dllmap_insert:
1022 * @assembly: if NULL, this is a global mapping, otherwise the remapping of the dynamic library will only apply to the specified assembly
1023 * @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
1024 * @func: if not null, the mapping will only applied to the named function (the value of EntryPoint)
1025 * @tdll: The name of the library to map the specified @dll if it matches.
1026 * @tfunc: The name of the function that replaces the invocation. If NULL, it is replaced with a copy of @func.
1028 * LOCKING: Acquires the loader lock.
1030 * This function is used to programatically add DllImport remapping in either
1031 * a specific assembly, or as a global remapping. This is done by remapping
1032 * references in a DllImport attribute from the @dll library name into the @tdll
1033 * name. If the @dll name contains the prefix "i:", the comparison of the
1034 * library name is done without case sensitivity.
1036 * If you pass @func, this is the name of the EntryPoint in a DllImport if specified
1037 * or the name of the function as determined by DllImport. If you pass @func, you
1038 * must also pass @tfunc which is the name of the target function to invoke on a match.
1041 * mono_dllmap_insert (NULL, "i:libdemo.dll", NULL, relocated_demo_path, NULL);
1043 * The above will remap DllImport statments for "libdemo.dll" and "LIBDEMO.DLL" to
1044 * the contents of relocated_demo_path for all assemblies in the Mono process.
1046 * NOTE: This can be called before the runtime is initialized, for example from
1047 * mono_config_parse ().
1050 mono_dllmap_insert (MonoImage *assembly, const char *dll, const char *func, const char *tdll, const char *tfunc)
1054 mono_loader_init ();
1057 entry = (MonoDllMap *)g_malloc0 (sizeof (MonoDllMap));
1058 entry->dll = dll? g_strdup (dll): NULL;
1059 entry->target = tdll? g_strdup (tdll): NULL;
1060 entry->func = func? g_strdup (func): NULL;
1061 entry->target_func = tfunc? g_strdup (tfunc): (func? g_strdup (func): NULL);
1063 global_loader_data_lock ();
1064 entry->next = global_dll_map;
1065 global_dll_map = entry;
1066 global_loader_data_unlock ();
1068 entry = (MonoDllMap *)mono_image_alloc0 (assembly, sizeof (MonoDllMap));
1069 entry->dll = dll? mono_image_strdup (assembly, dll): NULL;
1070 entry->target = tdll? mono_image_strdup (assembly, tdll): NULL;
1071 entry->func = func? mono_image_strdup (assembly, func): NULL;
1072 entry->target_func = tfunc? mono_image_strdup (assembly, tfunc): (func? mono_image_strdup (assembly, func): NULL);
1074 mono_image_lock (assembly);
1075 entry->next = assembly->dll_map;
1076 assembly->dll_map = entry;
1077 mono_image_unlock (assembly);
1082 free_dllmap (MonoDllMap *map)
1085 MonoDllMap *next = map->next;
1088 g_free (map->target);
1090 g_free (map->target_func);
1097 dllmap_cleanup (void)
1099 free_dllmap (global_dll_map);
1100 global_dll_map = NULL;
1103 static GHashTable *global_module_map;
1106 cached_module_load (const char *name, int flags, char **err)
1112 global_loader_data_lock ();
1113 if (!global_module_map)
1114 global_module_map = g_hash_table_new (g_str_hash, g_str_equal);
1115 res = (MonoDl *)g_hash_table_lookup (global_module_map, name);
1117 global_loader_data_unlock ();
1120 res = mono_dl_open (name, flags, err);
1122 g_hash_table_insert (global_module_map, g_strdup (name), res);
1123 global_loader_data_unlock ();
1128 mono_loader_register_module (const char *name, MonoDl *module)
1130 if (!global_module_map)
1131 global_module_map = g_hash_table_new (g_str_hash, g_str_equal);
1132 g_hash_table_insert (global_module_map, g_strdup (name), module);
1135 static MonoDl *internal_module;
1138 is_absolute_path (const char *path)
1140 #ifdef PLATFORM_MACOSX
1141 if (!strncmp (path, "@executable_path/", 17) || !strncmp (path, "@loader_path/", 13) ||
1142 !strncmp (path, "@rpath/", 7))
1145 return g_path_is_absolute (path);
1149 mono_lookup_pinvoke_call (MonoMethod *method, const char **exc_class, const char **exc_arg)
1151 MonoImage *image = method->klass->image;
1152 MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *)method;
1153 MonoTableInfo *tables = image->tables;
1154 MonoTableInfo *im = &tables [MONO_TABLE_IMPLMAP];
1155 MonoTableInfo *mr = &tables [MONO_TABLE_MODULEREF];
1156 guint32 im_cols [MONO_IMPLMAP_SIZE];
1157 guint32 scope_token;
1158 const char *import = NULL;
1159 const char *orig_scope;
1160 const char *new_scope;
1162 char *full_name, *file_name, *found_name = NULL;
1164 MonoDl *module = NULL;
1165 gboolean cached = FALSE;
1167 g_assert (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL);
1175 return piinfo->addr;
1177 if (image_is_dynamic (method->klass->image)) {
1178 MonoReflectionMethodAux *method_aux =
1179 (MonoReflectionMethodAux *)g_hash_table_lookup (
1180 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
1184 import = method_aux->dllentry;
1185 orig_scope = method_aux->dll;
1188 if (!piinfo->implmap_idx || piinfo->implmap_idx > im->rows)
1191 mono_metadata_decode_row (im, piinfo->implmap_idx - 1, im_cols, MONO_IMPLMAP_SIZE);
1193 if (!im_cols [MONO_IMPLMAP_SCOPE] || im_cols [MONO_IMPLMAP_SCOPE] > mr->rows)
1196 piinfo->piflags = im_cols [MONO_IMPLMAP_FLAGS];
1197 import = mono_metadata_string_heap (image, im_cols [MONO_IMPLMAP_NAME]);
1198 scope_token = mono_metadata_decode_row_col (mr, im_cols [MONO_IMPLMAP_SCOPE] - 1, MONO_MODULEREF_NAME);
1199 orig_scope = mono_metadata_string_heap (image, scope_token);
1202 mono_dllmap_lookup (image, orig_scope, import, &new_scope, &import);
1205 mono_image_lock (image);
1206 if (!image->pinvoke_scopes) {
1207 image->pinvoke_scopes = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL);
1208 image->pinvoke_scope_filenames = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
1210 module = (MonoDl *)g_hash_table_lookup (image->pinvoke_scopes, new_scope);
1211 found_name = (char *)g_hash_table_lookup (image->pinvoke_scope_filenames, new_scope);
1212 mono_image_unlock (image);
1216 found_name = g_strdup (found_name);
1220 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1221 "DllImport attempting to load: '%s'.", new_scope);
1223 /* we allow a special name to dlopen from the running process namespace */
1224 if (strcmp (new_scope, "__Internal") == 0){
1225 if (internal_module == NULL)
1226 internal_module = mono_dl_open (NULL, MONO_DL_LAZY, &error_msg);
1227 module = internal_module;
1232 * Try loading the module using a variety of names
1234 for (i = 0; i < 5; ++i) {
1235 char *base_name = NULL, *dir_name = NULL;
1236 gboolean is_absolute = is_absolute_path (new_scope);
1240 /* Try the original name */
1241 file_name = g_strdup (new_scope);
1244 /* Try trimming the .dll extension */
1245 if (strstr (new_scope, ".dll") == (new_scope + strlen (new_scope) - 4)) {
1246 file_name = g_strdup (new_scope);
1247 file_name [strlen (new_scope) - 4] = '\0';
1254 dir_name = g_path_get_dirname (new_scope);
1255 base_name = g_path_get_basename (new_scope);
1256 if (strstr (base_name, "lib") != base_name) {
1257 char *tmp = g_strdup_printf ("lib%s", base_name);
1260 file_name = g_strdup_printf ("%s%s%s", dir_name, G_DIR_SEPARATOR_S, base_name);
1263 } else if (strstr (new_scope, "lib") != new_scope) {
1264 file_name = g_strdup_printf ("lib%s", new_scope);
1269 if (!is_absolute && mono_dl_get_system_dir ()) {
1270 dir_name = (char*)mono_dl_get_system_dir ();
1271 file_name = g_path_get_basename (new_scope);
1277 #ifndef TARGET_WIN32
1278 if (!g_ascii_strcasecmp ("user32.dll", new_scope) ||
1279 !g_ascii_strcasecmp ("kernel32.dll", new_scope) ||
1280 !g_ascii_strcasecmp ("user32", new_scope) ||
1281 !g_ascii_strcasecmp ("kernel", new_scope)) {
1282 file_name = g_strdup ("libMonoSupportW.so");
1286 #ifndef TARGET_WIN32
1293 dir_name = g_path_get_dirname (file_name);
1295 base_name = g_path_get_basename (file_name);
1298 if (!module && is_absolute) {
1299 module = cached_module_load (file_name, MONO_DL_LAZY, &error_msg);
1301 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1302 "DllImport error loading library '%s': '%s'.",
1303 file_name, error_msg);
1306 found_name = g_strdup (file_name);
1310 if (!module && !is_absolute) {
1314 for (j = 0; j < 3; ++j) {
1319 mdirname = g_path_get_dirname (image->name);
1321 case 1: /* @executable_path@/../lib */
1325 binl = mono_dl_get_executable_path (buf, sizeof (buf));
1327 char *base, *newbase;
1330 resolvedname = mono_path_resolve_symlinks (buf);
1332 base = g_path_get_dirname (resolvedname);
1333 newbase = g_path_get_dirname(base);
1334 mdirname = g_strdup_printf ("%s/lib", newbase);
1336 g_free (resolvedname);
1343 case 2: /* @executable_path@/../Libraries */
1347 binl = mono_dl_get_executable_path (buf, sizeof (buf));
1349 char *base, *newbase;
1352 resolvedname = mono_path_resolve_symlinks (buf);
1354 base = g_path_get_dirname (resolvedname);
1355 newbase = g_path_get_dirname(base);
1356 mdirname = g_strdup_printf ("%s/Libraries", newbase);
1358 g_free (resolvedname);
1370 while ((full_name = mono_dl_build_path (mdirname, file_name, &iter))) {
1371 module = cached_module_load (full_name, MONO_DL_LAZY, &error_msg);
1373 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1374 "DllImport error loading library '%s': '%s'.",
1375 full_name, error_msg);
1378 found_name = g_strdup (full_name);
1394 char *file_or_base = is_absolute ? base_name : file_name;
1395 while ((full_name = mono_dl_build_path (dir_name, file_or_base, &iter))) {
1396 module = cached_module_load (full_name, MONO_DL_LAZY, &error_msg);
1398 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1399 "DllImport error loading library '%s': '%s'.",
1400 full_name, error_msg);
1403 found_name = g_strdup (full_name);
1412 module = cached_module_load (file_name, MONO_DL_LAZY, &error_msg);
1414 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1415 "DllImport error loading library '%s': '%s'.",
1416 file_name, error_msg);
1418 found_name = g_strdup (file_name);
1433 mono_trace (G_LOG_LEVEL_WARNING, MONO_TRACE_DLLIMPORT,
1434 "DllImport unable to load library '%s'.",
1439 *exc_class = "DllNotFoundException";
1440 *exc_arg = new_scope;
1446 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1447 "DllImport loaded library '%s'.", found_name);
1448 mono_image_lock (image);
1449 if (!g_hash_table_lookup (image->pinvoke_scopes, new_scope)) {
1450 g_hash_table_insert (image->pinvoke_scopes, g_strdup (new_scope), module);
1451 g_hash_table_insert (image->pinvoke_scope_filenames, g_strdup (new_scope), g_strdup (found_name));
1453 mono_image_unlock (image);
1456 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1457 "DllImport searching in: '%s' ('%s').", new_scope, found_name);
1458 g_free (found_name);
1461 if (import && import [0] == '#' && isdigit (import [1])) {
1465 id = strtol (import + 1, &end, 10);
1466 if (id > 0 && *end == '\0')
1470 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1471 "Searching for '%s'.", import);
1473 if (piinfo->piflags & PINVOKE_ATTRIBUTE_NO_MANGLE) {
1474 error_msg = mono_dl_symbol (module, import, &piinfo->addr);
1476 char *mangled_name = NULL, *mangled_name2 = NULL;
1479 int mangle_param_count;
1485 * Search using a variety of mangled names
1487 for (mangle_charset = 0; mangle_charset <= 1; mangle_charset ++) {
1488 for (mangle_stdcall = 0; mangle_stdcall <= 1; mangle_stdcall ++) {
1489 gboolean need_param_count = FALSE;
1491 if (mangle_stdcall > 0)
1492 need_param_count = TRUE;
1494 for (mangle_param_count = 0; mangle_param_count <= (need_param_count ? 256 : 0); mangle_param_count += 4) {
1499 mangled_name = (char*)import;
1500 switch (piinfo->piflags & PINVOKE_ATTRIBUTE_CHAR_SET_MASK) {
1501 case PINVOKE_ATTRIBUTE_CHAR_SET_UNICODE:
1502 /* Try the mangled name first */
1503 if (mangle_charset == 0)
1504 mangled_name = g_strconcat (import, "W", NULL);
1506 case PINVOKE_ATTRIBUTE_CHAR_SET_AUTO:
1508 if (mangle_charset == 0)
1509 mangled_name = g_strconcat (import, "W", NULL);
1511 /* Try the mangled name last */
1512 if (mangle_charset == 1)
1513 mangled_name = g_strconcat (import, "A", NULL);
1516 case PINVOKE_ATTRIBUTE_CHAR_SET_ANSI:
1518 /* Try the mangled name last */
1519 if (mangle_charset == 1)
1520 mangled_name = g_strconcat (import, "A", NULL);
1525 if (mangle_param_count == 0)
1526 param_count = mono_method_signature (method)->param_count * sizeof (gpointer);
1528 /* Try brute force, since it would be very hard to compute the stack usage correctly */
1529 param_count = mangle_param_count;
1531 /* Try the stdcall mangled name */
1533 * gcc under windows creates mangled names without the underscore, but MS.NET
1534 * doesn't support it, so we doesn't support it either.
1536 if (mangle_stdcall == 1)
1537 mangled_name2 = g_strdup_printf ("_%s@%d", mangled_name, param_count);
1539 mangled_name2 = mangled_name;
1541 mangled_name2 = mangled_name;
1544 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1545 "Probing '%s'.", mangled_name2);
1547 error_msg = mono_dl_symbol (module, mangled_name2, &piinfo->addr);
1550 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1551 "Found as '%s'.", mangled_name2);
1553 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1554 "Could not find '%s' due to '%s'.", mangled_name2, error_msg);
1559 if (mangled_name != mangled_name2)
1560 g_free (mangled_name2);
1561 if (mangled_name != import)
1562 g_free (mangled_name);
1568 if (!piinfo->addr) {
1571 *exc_class = "EntryPointNotFoundException";
1576 return piinfo->addr;
1580 * LOCKING: assumes the loader lock to be taken.
1583 mono_get_method_from_token (MonoImage *image, guint32 token, MonoClass *klass,
1584 MonoGenericContext *context, gboolean *used_context, MonoError *error)
1587 int table = mono_metadata_token_table (token);
1588 int idx = mono_metadata_token_index (token);
1589 MonoTableInfo *tables = image->tables;
1590 MonoGenericContainer *generic_container = NULL, *container = NULL;
1591 const char *sig = NULL;
1592 guint32 cols [MONO_TYPEDEF_SIZE];
1594 mono_error_init (error);
1596 if (image_is_dynamic (image)) {
1597 MonoClass *handle_class;
1599 result = (MonoMethod *)mono_lookup_dynamic_token_class (image, token, TRUE, &handle_class, context, error);
1600 mono_error_assert_ok (error);
1602 // This checks the memberref type as well
1603 if (result && handle_class != mono_defaults.methodhandle_class) {
1604 mono_error_set_bad_image (error, image, "Bad method token 0x%08x on dynamic image", token);
1610 if (table != MONO_TABLE_METHOD) {
1611 if (table == MONO_TABLE_METHODSPEC) {
1612 if (used_context) *used_context = TRUE;
1613 return method_from_methodspec (image, context, idx, error);
1615 if (table != MONO_TABLE_MEMBERREF) {
1616 mono_error_set_bad_image (error, image, "Bad method token 0x%08x.", token);
1619 return method_from_memberref (image, idx, context, used_context, error);
1622 if (used_context) *used_context = FALSE;
1624 if (idx > image->tables [MONO_TABLE_METHOD].rows) {
1625 mono_error_set_bad_image (error, image, "Bad method token 0x%08x (out of bounds).", token);
1630 guint32 type = mono_metadata_typedef_from_method (image, token);
1632 mono_error_set_bad_image (error, image, "Bad method token 0x%08x (could not find corresponding typedef).", token);
1635 klass = mono_class_get_checked (image, MONO_TOKEN_TYPE_DEF | type, error);
1640 mono_metadata_decode_row (&image->tables [MONO_TABLE_METHOD], idx - 1, cols, 6);
1642 if ((cols [2] & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
1643 (cols [1] & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL)) {
1644 result = (MonoMethod *)mono_image_alloc0 (image, sizeof (MonoMethodPInvoke));
1646 result = (MonoMethod *)mono_image_alloc0 (image, sizeof (MonoMethod));
1647 methods_size += sizeof (MonoMethod);
1650 mono_stats.method_count ++;
1653 result->klass = klass;
1654 result->flags = cols [2];
1655 result->iflags = cols [1];
1656 result->token = token;
1657 result->name = mono_metadata_string_heap (image, cols [3]);
1659 if (!sig) /* already taken from the methodref */
1660 sig = mono_metadata_blob_heap (image, cols [4]);
1661 /* size = */ mono_metadata_decode_blob_size (sig, &sig);
1663 container = mono_class_try_get_generic_container (klass);
1666 * load_generic_params does a binary search so only call it if the method
1670 generic_container = mono_metadata_load_generic_params (image, token, container);
1672 if (generic_container) {
1673 result->is_generic = TRUE;
1674 generic_container->owner.method = result;
1675 generic_container->is_anonymous = FALSE; // Method is now known, container is no longer anonymous
1676 /*FIXME put this before the image alloc*/
1677 if (!mono_metadata_load_generic_param_constraints_checked (image, token, generic_container, error))
1680 container = generic_container;
1683 if (cols [1] & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) {
1684 if (result->klass == mono_defaults.string_class && !strcmp (result->name, ".ctor"))
1685 result->string_ctor = 1;
1686 } else if (cols [2] & METHOD_ATTRIBUTE_PINVOKE_IMPL) {
1687 MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *)result;
1690 /* IJW is P/Invoke with a predefined function pointer. */
1691 if (image->is_module_handle && (cols [1] & METHOD_IMPL_ATTRIBUTE_NATIVE)) {
1692 piinfo->addr = mono_image_rva_map (image, cols [0]);
1693 g_assert (piinfo->addr);
1696 piinfo->implmap_idx = mono_metadata_implmap_from_method (image, idx - 1);
1697 /* Native methods can have no map. */
1698 if (piinfo->implmap_idx)
1699 piinfo->piflags = mono_metadata_decode_row_col (&tables [MONO_TABLE_IMPLMAP], piinfo->implmap_idx - 1, MONO_IMPLMAP_FLAGS);
1702 if (generic_container)
1703 mono_method_set_generic_container (result, generic_container);
1709 mono_get_method (MonoImage *image, guint32 token, MonoClass *klass)
1712 MonoMethod *result = mono_get_method_checked (image, token, klass, NULL, &error);
1713 mono_error_cleanup (&error);
1718 mono_get_method_full (MonoImage *image, guint32 token, MonoClass *klass,
1719 MonoGenericContext *context)
1722 MonoMethod *result = mono_get_method_checked (image, token, klass, context, &error);
1723 mono_error_cleanup (&error);
1728 mono_get_method_checked (MonoImage *image, guint32 token, MonoClass *klass, MonoGenericContext *context, MonoError *error)
1730 MonoMethod *result = NULL;
1731 gboolean used_context = FALSE;
1733 /* We do everything inside the lock to prevent creation races */
1735 mono_error_init (error);
1737 mono_image_lock (image);
1739 if (mono_metadata_token_table (token) == MONO_TABLE_METHOD) {
1740 if (!image->method_cache)
1741 image->method_cache = g_hash_table_new (NULL, NULL);
1742 result = (MonoMethod *)g_hash_table_lookup (image->method_cache, GINT_TO_POINTER (mono_metadata_token_index (token)));
1743 } else if (!image_is_dynamic (image)) {
1744 if (!image->methodref_cache)
1745 image->methodref_cache = g_hash_table_new (NULL, NULL);
1746 result = (MonoMethod *)g_hash_table_lookup (image->methodref_cache, GINT_TO_POINTER (token));
1748 mono_image_unlock (image);
1754 result = mono_get_method_from_token (image, token, klass, context, &used_context, error);
1758 mono_image_lock (image);
1759 if (!used_context && !result->is_inflated) {
1760 MonoMethod *result2 = NULL;
1762 if (mono_metadata_token_table (token) == MONO_TABLE_METHOD)
1763 result2 = (MonoMethod *)g_hash_table_lookup (image->method_cache, GINT_TO_POINTER (mono_metadata_token_index (token)));
1764 else if (!image_is_dynamic (image))
1765 result2 = (MonoMethod *)g_hash_table_lookup (image->methodref_cache, GINT_TO_POINTER (token));
1768 mono_image_unlock (image);
1772 if (mono_metadata_token_table (token) == MONO_TABLE_METHOD)
1773 g_hash_table_insert (image->method_cache, GINT_TO_POINTER (mono_metadata_token_index (token)), result);
1774 else if (!image_is_dynamic (image))
1775 g_hash_table_insert (image->methodref_cache, GINT_TO_POINTER (token), result);
1778 mono_image_unlock (image);
1784 get_method_constrained (MonoImage *image, MonoMethod *method, MonoClass *constrained_class, MonoGenericContext *context, MonoError *error)
1787 MonoClass *ic = NULL;
1788 MonoGenericContext *method_context = NULL;
1789 MonoMethodSignature *sig, *original_sig;
1791 mono_error_init (error);
1793 mono_class_init (constrained_class);
1794 original_sig = sig = mono_method_signature_checked (method, error);
1799 if (method->is_inflated && sig->generic_param_count) {
1800 MonoMethodInflated *imethod = (MonoMethodInflated *) method;
1801 sig = mono_method_signature_checked (imethod->declaring, error); /*We assume that if the inflated method signature is valid, the declaring method is too*/
1804 method_context = mono_method_get_context (method);
1808 * We must inflate the signature with the class instantiation to work on
1809 * cases where a class inherit from a generic type and the override replaces
1810 * any type argument which a concrete type. See #325283.
1812 if (method_context->class_inst) {
1813 MonoGenericContext ctx;
1814 ctx.method_inst = NULL;
1815 ctx.class_inst = method_context->class_inst;
1816 /*Fixme, property propagate this error*/
1817 sig = inflate_generic_signature_checked (method->klass->image, sig, &ctx, error);
1823 if ((constrained_class != method->klass) && (MONO_CLASS_IS_INTERFACE (method->klass)))
1826 result = find_method (constrained_class, ic, method->name, sig, constrained_class, error);
1827 if (sig != original_sig)
1828 mono_metadata_free_inflated_signature (sig);
1833 if (method_context) {
1834 result = mono_class_inflate_generic_method_checked (result, method_context, error);
1843 mono_get_method_constrained_with_method (MonoImage *image, MonoMethod *method, MonoClass *constrained_class,
1844 MonoGenericContext *context, MonoError *error)
1848 return get_method_constrained (image, method, constrained_class, context, error);
1852 * mono_get_method_constrained:
1854 * This is used when JITing the `constrained.' opcode.
1856 * This returns two values: the contrained method, which has been inflated
1857 * as the function return value; And the original CIL-stream method as
1858 * declared in cil_method. The later is used for verification.
1861 mono_get_method_constrained (MonoImage *image, guint32 token, MonoClass *constrained_class,
1862 MonoGenericContext *context, MonoMethod **cil_method)
1865 MonoMethod *result = mono_get_method_constrained_checked (image, token, constrained_class, context, cil_method, &error);
1866 mono_error_cleanup (&error);
1871 mono_get_method_constrained_checked (MonoImage *image, guint32 token, MonoClass *constrained_class, MonoGenericContext *context, MonoMethod **cil_method, MonoError *error)
1873 mono_error_init (error);
1875 *cil_method = mono_get_method_from_token (image, token, NULL, context, NULL, error);
1879 return get_method_constrained (image, *cil_method, constrained_class, context, error);
1883 mono_free_method (MonoMethod *method)
1885 if (mono_profiler_get_events () & MONO_PROFILE_METHOD_EVENTS)
1886 mono_profiler_method_free (method);
1888 /* FIXME: This hack will go away when the profiler will support freeing methods */
1889 if (mono_profiler_get_events () != MONO_PROFILE_NONE)
1892 if (method->signature) {
1894 * FIXME: This causes crashes because the types inside signatures and
1895 * locals are shared.
1897 /* mono_metadata_free_method_signature (method->signature); */
1898 /* g_free (method->signature); */
1901 if (method_is_dynamic (method)) {
1902 MonoMethodWrapper *mw = (MonoMethodWrapper*)method;
1905 mono_marshal_free_dynamic_wrappers (method);
1907 mono_image_property_remove (method->klass->image, method);
1909 g_free ((char*)method->name);
1911 g_free ((char*)mw->header->code);
1912 for (i = 0; i < mw->header->num_locals; ++i)
1913 g_free (mw->header->locals [i]);
1914 g_free (mw->header->clauses);
1915 g_free (mw->header);
1917 g_free (mw->method_data);
1918 g_free (method->signature);
1924 mono_method_get_param_names (MonoMethod *method, const char **names)
1928 MonoTableInfo *methodt;
1929 MonoTableInfo *paramt;
1930 MonoMethodSignature *signature;
1933 if (method->is_inflated)
1934 method = ((MonoMethodInflated *) method)->declaring;
1936 signature = mono_method_signature (method);
1937 /*FIXME this check is somewhat redundant since the caller usally will have to get the signature to figure out the
1938 number of arguments and allocate a properly sized array. */
1939 if (signature == NULL)
1942 if (!signature->param_count)
1945 for (i = 0; i < signature->param_count; ++i)
1948 klass = method->klass;
1952 mono_class_init (klass);
1954 if (image_is_dynamic (klass->image)) {
1955 MonoReflectionMethodAux *method_aux =
1956 (MonoReflectionMethodAux *)g_hash_table_lookup (
1957 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
1958 if (method_aux && method_aux->param_names) {
1959 for (i = 0; i < mono_method_signature (method)->param_count; ++i)
1960 if (method_aux->param_names [i + 1])
1961 names [i] = method_aux->param_names [i + 1];
1966 if (method->wrapper_type) {
1967 char **pnames = NULL;
1969 mono_image_lock (klass->image);
1970 if (klass->image->wrapper_param_names)
1971 pnames = (char **)g_hash_table_lookup (klass->image->wrapper_param_names, method);
1972 mono_image_unlock (klass->image);
1975 for (i = 0; i < signature->param_count; ++i)
1976 names [i] = pnames [i];
1981 methodt = &klass->image->tables [MONO_TABLE_METHOD];
1982 paramt = &klass->image->tables [MONO_TABLE_PARAM];
1983 idx = mono_method_get_index (method);
1985 guint32 cols [MONO_PARAM_SIZE];
1988 param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
1990 if (idx < methodt->rows)
1991 lastp = mono_metadata_decode_row_col (methodt, idx, MONO_METHOD_PARAMLIST);
1993 lastp = paramt->rows + 1;
1994 for (i = param_index; i < lastp; ++i) {
1995 mono_metadata_decode_row (paramt, i -1, cols, MONO_PARAM_SIZE);
1996 if (cols [MONO_PARAM_SEQUENCE] && cols [MONO_PARAM_SEQUENCE] <= signature->param_count) /* skip return param spec and bounds check*/
1997 names [cols [MONO_PARAM_SEQUENCE] - 1] = mono_metadata_string_heap (klass->image, cols [MONO_PARAM_NAME]);
2003 mono_method_get_param_token (MonoMethod *method, int index)
2005 MonoClass *klass = method->klass;
2006 MonoTableInfo *methodt;
2009 mono_class_init (klass);
2011 if (image_is_dynamic (klass->image))
2012 g_assert_not_reached ();
2014 methodt = &klass->image->tables [MONO_TABLE_METHOD];
2015 idx = mono_method_get_index (method);
2017 guint param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
2021 return mono_metadata_make_token (MONO_TABLE_PARAM, 0);
2023 return mono_metadata_make_token (MONO_TABLE_PARAM, param_index + index);
2030 mono_method_get_marshal_info (MonoMethod *method, MonoMarshalSpec **mspecs)
2033 MonoClass *klass = method->klass;
2034 MonoTableInfo *methodt;
2035 MonoTableInfo *paramt;
2036 MonoMethodSignature *signature;
2039 signature = mono_method_signature (method);
2040 g_assert (signature); /*FIXME there is no way to signal error from this function*/
2042 for (i = 0; i < signature->param_count + 1; ++i)
2045 if (image_is_dynamic (method->klass->image)) {
2046 MonoReflectionMethodAux *method_aux =
2047 (MonoReflectionMethodAux *)g_hash_table_lookup (
2048 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
2049 if (method_aux && method_aux->param_marshall) {
2050 MonoMarshalSpec **dyn_specs = method_aux->param_marshall;
2051 for (i = 0; i < signature->param_count + 1; ++i)
2052 if (dyn_specs [i]) {
2053 mspecs [i] = g_new0 (MonoMarshalSpec, 1);
2054 memcpy (mspecs [i], dyn_specs [i], sizeof (MonoMarshalSpec));
2055 mspecs [i]->data.custom_data.custom_name = g_strdup (dyn_specs [i]->data.custom_data.custom_name);
2056 mspecs [i]->data.custom_data.cookie = g_strdup (dyn_specs [i]->data.custom_data.cookie);
2062 mono_class_init (klass);
2064 methodt = &klass->image->tables [MONO_TABLE_METHOD];
2065 paramt = &klass->image->tables [MONO_TABLE_PARAM];
2066 idx = mono_method_get_index (method);
2068 guint32 cols [MONO_PARAM_SIZE];
2069 guint param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
2071 if (idx < methodt->rows)
2072 lastp = mono_metadata_decode_row_col (methodt, idx, MONO_METHOD_PARAMLIST);
2074 lastp = paramt->rows + 1;
2076 for (i = param_index; i < lastp; ++i) {
2077 mono_metadata_decode_row (paramt, i -1, cols, MONO_PARAM_SIZE);
2079 if (cols [MONO_PARAM_FLAGS] & PARAM_ATTRIBUTE_HAS_FIELD_MARSHAL && cols [MONO_PARAM_SEQUENCE] <= signature->param_count) {
2081 tp = mono_metadata_get_marshal_info (klass->image, i - 1, FALSE);
2083 mspecs [cols [MONO_PARAM_SEQUENCE]]= mono_metadata_parse_marshal_spec (klass->image, tp);
2092 mono_method_has_marshal_info (MonoMethod *method)
2095 MonoClass *klass = method->klass;
2096 MonoTableInfo *methodt;
2097 MonoTableInfo *paramt;
2100 if (image_is_dynamic (method->klass->image)) {
2101 MonoReflectionMethodAux *method_aux =
2102 (MonoReflectionMethodAux *)g_hash_table_lookup (
2103 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
2104 MonoMarshalSpec **dyn_specs = method_aux->param_marshall;
2106 for (i = 0; i < mono_method_signature (method)->param_count + 1; ++i)
2113 mono_class_init (klass);
2115 methodt = &klass->image->tables [MONO_TABLE_METHOD];
2116 paramt = &klass->image->tables [MONO_TABLE_PARAM];
2117 idx = mono_method_get_index (method);
2119 guint32 cols [MONO_PARAM_SIZE];
2120 guint param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
2122 if (idx + 1 < methodt->rows)
2123 lastp = mono_metadata_decode_row_col (methodt, idx, MONO_METHOD_PARAMLIST);
2125 lastp = paramt->rows + 1;
2127 for (i = param_index; i < lastp; ++i) {
2128 mono_metadata_decode_row (paramt, i -1, cols, MONO_PARAM_SIZE);
2130 if (cols [MONO_PARAM_FLAGS] & PARAM_ATTRIBUTE_HAS_FIELD_MARSHAL)
2139 mono_method_get_wrapper_data (MonoMethod *method, guint32 id)
2142 g_assert (method != NULL);
2143 g_assert (method->wrapper_type != MONO_WRAPPER_NONE);
2145 data = (void **)((MonoMethodWrapper *)method)->method_data;
2146 g_assert (data != NULL);
2147 g_assert (id <= GPOINTER_TO_UINT (*data));
2154 } StackWalkUserData;
2157 stack_walk_adapter (MonoStackFrameInfo *frame, MonoContext *ctx, gpointer data)
2159 StackWalkUserData *d = (StackWalkUserData *)data;
2161 switch (frame->type) {
2162 case FRAME_TYPE_DEBUGGER_INVOKE:
2163 case FRAME_TYPE_MANAGED_TO_NATIVE:
2164 case FRAME_TYPE_TRAMPOLINE:
2166 case FRAME_TYPE_MANAGED:
2167 g_assert (frame->ji);
2168 return d->func (frame->actual_method, frame->native_offset, frame->il_offset, frame->managed, d->user_data);
2171 g_assert_not_reached ();
2177 mono_stack_walk (MonoStackWalk func, gpointer user_data)
2179 StackWalkUserData ud = { func, user_data };
2180 mono_get_eh_callbacks ()->mono_walk_stack_with_ctx (stack_walk_adapter, NULL, MONO_UNWIND_LOOKUP_ALL, &ud);
2184 mono_stack_walk_no_il (MonoStackWalk func, gpointer user_data)
2186 StackWalkUserData ud = { func, user_data };
2187 mono_get_eh_callbacks ()->mono_walk_stack_with_ctx (stack_walk_adapter, NULL, MONO_UNWIND_DEFAULT, &ud);
2191 MonoStackWalkAsyncSafe func;
2193 } AsyncStackWalkUserData;
2197 async_stack_walk_adapter (MonoStackFrameInfo *frame, MonoContext *ctx, gpointer data)
2199 AsyncStackWalkUserData *d = (AsyncStackWalkUserData *)data;
2201 switch (frame->type) {
2202 case FRAME_TYPE_DEBUGGER_INVOKE:
2203 case FRAME_TYPE_MANAGED_TO_NATIVE:
2204 case FRAME_TYPE_TRAMPOLINE:
2206 case FRAME_TYPE_MANAGED:
2209 if (frame->ji->async) {
2210 return d->func (NULL, frame->domain, frame->ji->code_start, frame->native_offset, d->user_data);
2212 return d->func (frame->actual_method, frame->domain, frame->ji->code_start, frame->native_offset, d->user_data);
2216 g_assert_not_reached ();
2223 * mono_stack_walk_async_safe:
2225 * Async safe version callable from signal handlers.
2228 mono_stack_walk_async_safe (MonoStackWalkAsyncSafe func, void *initial_sig_context, void *user_data)
2231 AsyncStackWalkUserData ud = { func, user_data };
2233 mono_sigctx_to_monoctx (initial_sig_context, &ctx);
2234 mono_get_eh_callbacks ()->mono_walk_stack_with_ctx (async_stack_walk_adapter, &ctx, MONO_UNWIND_SIGNAL_SAFE, &ud);
2238 last_managed (MonoMethod *m, gint no, gint ilo, gboolean managed, gpointer data)
2240 MonoMethod **dest = (MonoMethod **)data;
2242 /*g_print ("In %s::%s [%d] [%d]\n", m->klass->name, m->name, no, ilo);*/
2248 mono_method_get_last_managed (void)
2250 MonoMethod *m = NULL;
2251 mono_stack_walk_no_il (last_managed, &m);
2255 static gboolean loader_lock_track_ownership = FALSE;
2260 * See docs/thread-safety.txt for the locking strategy.
2263 mono_loader_lock (void)
2265 mono_locks_coop_acquire (&loader_mutex, LoaderLock);
2266 if (G_UNLIKELY (loader_lock_track_ownership)) {
2267 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));
2272 mono_loader_unlock (void)
2274 mono_locks_coop_release (&loader_mutex, LoaderLock);
2275 if (G_UNLIKELY (loader_lock_track_ownership)) {
2276 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));
2281 * mono_loader_lock_track_ownership:
2283 * Set whenever the runtime should track ownership of the loader lock. If set to TRUE,
2284 * the mono_loader_lock_is_owned_by_self () can be called to query whenever the current
2285 * thread owns the loader lock.
2288 mono_loader_lock_track_ownership (gboolean track)
2290 loader_lock_track_ownership = track;
2294 * mono_loader_lock_is_owned_by_self:
2296 * Return whenever the current thread owns the loader lock.
2297 * This is useful to avoid blocking operations while holding the loader lock.
2300 mono_loader_lock_is_owned_by_self (void)
2302 g_assert (loader_lock_track_ownership);
2304 return GPOINTER_TO_UINT (mono_native_tls_get_value (loader_lock_nest_id)) > 0;
2308 * mono_loader_lock_if_inited:
2310 * Acquire the loader lock if it has been initialized, no-op otherwise. This can
2311 * be used in runtime initialization code which can be executed before mono_loader_init ().
2314 mono_loader_lock_if_inited (void)
2316 if (loader_lock_inited)
2317 mono_loader_lock ();
2321 mono_loader_unlock_if_inited (void)
2323 if (loader_lock_inited)
2324 mono_loader_unlock ();
2328 * mono_method_signature:
2330 * Return the signature of the method M. On failure, returns NULL, and ERR is set.
2332 MonoMethodSignature*
2333 mono_method_signature_checked (MonoMethod *m, MonoError *error)
2338 gboolean can_cache_signature;
2339 MonoGenericContainer *container;
2340 MonoMethodSignature *signature = NULL, *sig2;
2343 /* We need memory barriers below because of the double-checked locking pattern */
2345 mono_error_init (error);
2348 return m->signature;
2350 img = m->klass->image;
2352 if (m->is_inflated) {
2353 MonoMethodInflated *imethod = (MonoMethodInflated *) m;
2354 /* the lock is recursive */
2355 signature = mono_method_signature (imethod->declaring);
2356 signature = inflate_generic_signature_checked (imethod->declaring->klass->image, signature, mono_method_get_context (m), error);
2357 if (!mono_error_ok (error))
2360 inflated_signatures_size += mono_metadata_signature_size (signature);
2362 mono_image_lock (img);
2364 mono_memory_barrier ();
2366 m->signature = signature;
2368 mono_image_unlock (img);
2370 return m->signature;
2373 g_assert (mono_metadata_token_table (m->token) == MONO_TABLE_METHOD);
2374 idx = mono_metadata_token_index (m->token);
2376 sig = mono_metadata_blob_heap (img, sig_offset = mono_metadata_decode_row_col (&img->tables [MONO_TABLE_METHOD], idx - 1, MONO_METHOD_SIGNATURE));
2378 g_assert (!mono_class_is_ginst (m->klass));
2379 container = mono_method_get_generic_container (m);
2381 container = mono_class_try_get_generic_container (m->klass);
2383 /* Generic signatures depend on the container so they cannot be cached */
2384 /* icall/pinvoke signatures cannot be cached cause we modify them below */
2385 can_cache_signature = !(m->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && !(m->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) && !container;
2387 /* If the method has parameter attributes, that can modify the signature */
2388 if (mono_metadata_method_has_param_attrs (img, idx))
2389 can_cache_signature = FALSE;
2391 if (can_cache_signature) {
2392 mono_image_lock (img);
2393 signature = (MonoMethodSignature *)g_hash_table_lookup (img->method_signatures, sig);
2394 mono_image_unlock (img);
2398 const char *sig_body;
2399 /*TODO we should cache the failure result somewhere*/
2400 if (!mono_verifier_verify_method_signature (img, sig_offset, error))
2403 /* size = */ mono_metadata_decode_blob_size (sig, &sig_body);
2405 signature = mono_metadata_parse_method_signature_full (img, container, idx, sig_body, NULL, error);
2409 if (can_cache_signature) {
2410 mono_image_lock (img);
2411 sig2 = (MonoMethodSignature *)g_hash_table_lookup (img->method_signatures, sig);
2413 g_hash_table_insert (img->method_signatures, (gpointer)sig, signature);
2414 mono_image_unlock (img);
2417 signatures_size += mono_metadata_signature_size (signature);
2420 /* Verify metadata consistency */
2421 if (signature->generic_param_count) {
2422 if (!container || !container->is_method) {
2423 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);
2426 if (container->type_argc != signature->generic_param_count) {
2427 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);
2430 } else if (container && container->is_method && container->type_argc) {
2431 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);
2434 if (m->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL)
2435 signature->pinvoke = 1;
2436 else if (m->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) {
2437 MonoCallConvention conv = (MonoCallConvention)0;
2438 MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *)m;
2439 signature->pinvoke = 1;
2441 switch (piinfo->piflags & PINVOKE_ATTRIBUTE_CALL_CONV_MASK) {
2442 case 0: /* no call conv, so using default */
2443 case PINVOKE_ATTRIBUTE_CALL_CONV_WINAPI:
2444 conv = MONO_CALL_DEFAULT;
2446 case PINVOKE_ATTRIBUTE_CALL_CONV_CDECL:
2449 case PINVOKE_ATTRIBUTE_CALL_CONV_STDCALL:
2450 conv = MONO_CALL_STDCALL;
2452 case PINVOKE_ATTRIBUTE_CALL_CONV_THISCALL:
2453 conv = MONO_CALL_THISCALL;
2455 case PINVOKE_ATTRIBUTE_CALL_CONV_FASTCALL:
2456 conv = MONO_CALL_FASTCALL;
2458 case PINVOKE_ATTRIBUTE_CALL_CONV_GENERIC:
2459 case PINVOKE_ATTRIBUTE_CALL_CONV_GENERICINST:
2461 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);
2464 signature->call_convention = conv;
2467 mono_image_lock (img);
2469 mono_memory_barrier ();
2471 m->signature = signature;
2473 mono_image_unlock (img);
2475 return m->signature;
2479 * mono_method_signature:
2481 * Return the signature of the method M. On failure, returns NULL.
2483 MonoMethodSignature*
2484 mono_method_signature (MonoMethod *m)
2487 MonoMethodSignature *sig;
2489 sig = mono_method_signature_checked (m, &error);
2491 char *type_name = mono_type_get_full_name (m->klass);
2492 g_warning ("Could not load signature of %s:%s due to: %s", type_name, m->name, mono_error_get_message (&error));
2494 mono_error_cleanup (&error);
2501 mono_method_get_name (MonoMethod *method)
2503 return method->name;
2507 mono_method_get_class (MonoMethod *method)
2509 return method->klass;
2513 mono_method_get_token (MonoMethod *method)
2515 return method->token;
2519 mono_method_get_header_checked (MonoMethod *method, MonoError *error)
2525 MonoGenericContainer *container;
2527 mono_error_init (error);
2528 img = method->klass->image;
2530 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)) {
2531 mono_error_set_bad_image (error, img, "Method has no body");
2535 if (method->is_inflated) {
2536 MonoMethodInflated *imethod = (MonoMethodInflated *) method;
2537 MonoMethodHeader *header, *iheader;
2539 header = mono_method_get_header_checked (imethod->declaring, error);
2543 iheader = inflate_generic_header (header, mono_method_get_context (method), error);
2544 mono_metadata_free_mh (header);
2552 if (method->wrapper_type != MONO_WRAPPER_NONE || method->sre_method) {
2553 MonoMethodWrapper *mw = (MonoMethodWrapper *)method;
2554 g_assert (mw->header);
2559 * We don't need locks here: the new header is allocated from malloc memory
2560 * and is not stored anywhere in the runtime, the user needs to free it.
2562 g_assert (mono_metadata_token_table (method->token) == MONO_TABLE_METHOD);
2563 idx = mono_metadata_token_index (method->token);
2564 rva = mono_metadata_decode_row_col (&img->tables [MONO_TABLE_METHOD], idx - 1, MONO_METHOD_RVA);
2566 if (!mono_verifier_verify_method_header (img, rva, NULL)) {
2567 mono_error_set_bad_image (error, img, "Invalid method header, failed verification");
2571 loc = mono_image_rva_map (img, rva);
2573 mono_error_set_bad_image (error, img, "Method has zero rva");
2578 * When parsing the types of local variables, we must pass any container available
2579 * to ensure that both VAR and MVAR will get the right owner.
2581 container = mono_method_get_generic_container (method);
2583 container = mono_class_try_get_generic_container (method->klass);
2584 return mono_metadata_parse_mh_full (img, container, (const char *)loc, error);
2588 mono_method_get_header (MonoMethod *method)
2591 MonoMethodHeader *header = mono_method_get_header_checked (method, &error);
2592 mono_error_cleanup (&error);
2598 mono_method_get_flags (MonoMethod *method, guint32 *iflags)
2601 *iflags = method->iflags;
2602 return method->flags;
2606 * Find the method index in the metadata methodDef table.
2609 mono_method_get_index (MonoMethod *method)
2611 MonoClass *klass = method->klass;
2615 /* constructed array methods are not in the MethodDef table */
2619 return mono_metadata_token_index (method->token);
2621 mono_class_setup_methods (klass);
2622 if (mono_class_has_failure (klass))
2624 int first_idx = mono_class_get_first_method_idx (klass);
2625 for (i = 0; i < klass->method.count; ++i) {
2626 if (method == klass->methods [i]) {
2627 if (klass->image->uncompressed_metadata)
2628 return mono_metadata_translate_token_index (klass->image, MONO_TABLE_METHOD, first_idx + i + 1);
2630 return first_idx + i + 1;