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 contains the last type load error encountered by the loader.
73 MonoNativeTlsKey loader_error_thread_id;
76 * This TLS variable holds how many times the current thread has acquired the loader
79 MonoNativeTlsKey loader_lock_nest_id;
81 static void dllmap_cleanup (void);
85 global_loader_data_lock (void)
87 mono_locks_os_acquire (&global_loader_data_mutex, LoaderGlobalDataLock);
91 global_loader_data_unlock (void)
93 mono_locks_os_release (&global_loader_data_mutex, LoaderGlobalDataLock);
99 static gboolean inited;
102 mono_coop_mutex_init_recursive (&loader_mutex);
103 mono_os_mutex_init_recursive (&global_loader_data_mutex);
104 loader_lock_inited = TRUE;
106 mono_native_tls_alloc (&loader_error_thread_id, NULL);
107 mono_native_tls_alloc (&loader_lock_nest_id, NULL);
109 mono_counters_init ();
110 mono_counters_register ("Inflated signatures size",
111 MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &inflated_signatures_size);
112 mono_counters_register ("Memberref signature cache size",
113 MONO_COUNTER_METADATA | MONO_COUNTER_INT, &memberref_sig_cache_size);
114 mono_counters_register ("MonoMethod size",
115 MONO_COUNTER_METADATA | MONO_COUNTER_INT, &methods_size);
116 mono_counters_register ("MonoMethodSignature size",
117 MONO_COUNTER_METADATA | MONO_COUNTER_INT, &signatures_size);
124 mono_loader_cleanup (void)
128 mono_native_tls_free (loader_error_thread_id);
129 mono_native_tls_free (loader_lock_nest_id);
131 mono_coop_mutex_destroy (&loader_mutex);
132 mono_os_mutex_destroy (&global_loader_data_mutex);
133 loader_lock_inited = FALSE;
137 * mono_loader_get_last_error:
139 * Returns information about the last type load exception encountered by the loader, or
140 * NULL. After use, the exception should be cleared by calling mono_loader_clear_error.
143 mono_loader_get_last_error (void)
145 return (MonoLoaderError*)mono_native_tls_get_value (loader_error_thread_id);
149 mono_loader_assert_no_error (void)
151 MonoLoaderError *error = mono_loader_get_last_error ();
154 g_print ("Unhandled loader error: %x, %s %s %s\n", error->exception_type, error->msg, error->assembly_name, error->class_name);
155 g_assert_not_reached ();
160 * mono_loader_clear_error:
162 * Disposes any loader error messages on this thread
165 mono_loader_clear_error (void)
167 MonoLoaderError *ex = (MonoLoaderError*)mono_native_tls_get_value (loader_error_thread_id);
170 g_free (ex->class_name);
171 g_free (ex->assembly_name);
175 mono_native_tls_set_value (loader_error_thread_id, NULL);
180 * find_cached_memberref_sig:
182 * Return a cached copy of the memberref signature identified by SIG_IDX.
183 * We use a gpointer since the cache stores both MonoTypes and MonoMethodSignatures.
184 * A cache is needed since the type/signature parsing routines allocate everything
185 * from a mempool, so without a cache, multiple requests for the same signature would
186 * lead to unbounded memory growth. For normal methods/fields this is not a problem
187 * since the resulting methods/fields are cached, but inflated methods/fields cannot
189 * LOCKING: Acquires the loader lock.
192 find_cached_memberref_sig (MonoImage *image, guint32 sig_idx)
196 mono_image_lock (image);
197 res = g_hash_table_lookup (image->memberref_signatures, GUINT_TO_POINTER (sig_idx));
198 mono_image_unlock (image);
204 cache_memberref_sig (MonoImage *image, guint32 sig_idx, gpointer sig)
208 mono_image_lock (image);
209 prev_sig = g_hash_table_lookup (image->memberref_signatures, GUINT_TO_POINTER (sig_idx));
211 /* Somebody got in before us */
215 g_hash_table_insert (image->memberref_signatures, GUINT_TO_POINTER (sig_idx), sig);
216 /* An approximation based on glib 2.18 */
217 memberref_sig_cache_size += sizeof (gpointer) * 4;
219 mono_image_unlock (image);
224 static MonoClassField*
225 field_from_memberref (MonoImage *image, guint32 token, MonoClass **retklass,
226 MonoGenericContext *context, MonoError *error)
228 MonoClass *klass = NULL;
229 MonoClassField *field;
230 MonoTableInfo *tables = image->tables;
233 guint32 nindex, class_index;
236 guint32 idx = mono_metadata_token_index (token);
238 mono_error_init (error);
240 mono_metadata_decode_row (&tables [MONO_TABLE_MEMBERREF], idx-1, cols, MONO_MEMBERREF_SIZE);
241 nindex = cols [MONO_MEMBERREF_CLASS] >> MONO_MEMBERREF_PARENT_BITS;
242 class_index = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
244 fname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
246 if (!mono_verifier_verify_memberref_field_signature (image, cols [MONO_MEMBERREF_SIGNATURE], NULL)) {
247 mono_error_set_bad_image (error, image, "Bad field '%s' signature 0x%08x", class_index, token);
251 switch (class_index) {
252 case MONO_MEMBERREF_PARENT_TYPEDEF:
253 klass = mono_class_get_checked (image, MONO_TOKEN_TYPE_DEF | nindex, error);
255 case MONO_MEMBERREF_PARENT_TYPEREF:
256 klass = mono_class_from_typeref_checked (image, MONO_TOKEN_TYPE_REF | nindex, error);
258 case MONO_MEMBERREF_PARENT_TYPESPEC:
259 klass = mono_class_get_and_inflate_typespec_checked (image, MONO_TOKEN_TYPE_SPEC | nindex, context, error);
262 mono_error_set_bad_image (error, image, "Bad field field '%s' signature 0x%08x", class_index, token);
268 ptr = mono_metadata_blob_heap (image, cols [MONO_MEMBERREF_SIGNATURE]);
269 mono_metadata_decode_blob_size (ptr, &ptr);
270 /* we may want to check the signature here... */
273 mono_error_set_field_load (error, klass, fname, "Bad field signature class token %08x field name %s token %08x", class_index, fname, token);
277 /* FIXME: This needs a cache, especially for generic instances, since
278 * we ask mono_metadata_parse_type_checked () to allocates everything from a mempool.
279 * FIXME part2, mono_metadata_parse_type_checked actually allows for a transient type instead.
280 * FIXME part3, transient types are not 100% transient, so we need to take care of that first.
282 sig_type = (MonoType *)find_cached_memberref_sig (image, cols [MONO_MEMBERREF_SIGNATURE]);
284 MonoError inner_error;
285 sig_type = mono_metadata_parse_type_checked (image, NULL, 0, FALSE, ptr, &ptr, &inner_error);
286 if (sig_type == NULL) {
287 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));
288 mono_error_cleanup (&inner_error);
291 sig_type = (MonoType *)cache_memberref_sig (image, cols [MONO_MEMBERREF_SIGNATURE], sig_type);
294 mono_class_init (klass); /*FIXME is this really necessary?*/
297 field = mono_class_get_field_from_name_full (klass, fname, sig_type);
300 mono_loader_assert_no_error ();
301 mono_error_set_field_load (error, klass, fname, "Could not find field '%s'", fname);
308 * mono_field_from_token:
309 * @deprecated use the _checked variant
310 * Notes: runtime code MUST not use this function
313 mono_field_from_token (MonoImage *image, guint32 token, MonoClass **retklass, MonoGenericContext *context)
316 MonoClassField *res = mono_field_from_token_checked (image, token, retklass, context, &error);
317 g_assert (mono_error_ok (&error));
322 mono_field_from_token_checked (MonoImage *image, guint32 token, MonoClass **retklass, MonoGenericContext *context, MonoError *error)
326 MonoClassField *field;
328 mono_error_init (error);
330 if (image_is_dynamic (image)) {
331 MonoClassField *result;
332 MonoClass *handle_class;
335 MonoError inner_error;
336 result = (MonoClassField *)mono_lookup_dynamic_token_class (image, token, TRUE, &handle_class, context, &inner_error);
337 mono_error_cleanup (&inner_error);
338 // This checks the memberref type as well
339 if (!result || handle_class != mono_defaults.fieldhandle_class) {
340 mono_error_set_bad_image (error, image, "Bad field token 0x%08x", token);
343 *retklass = result->parent;
347 if ((field = (MonoClassField *)mono_conc_hashtable_lookup (image->field_cache, GUINT_TO_POINTER (token)))) {
348 *retklass = field->parent;
352 if (mono_metadata_token_table (token) == MONO_TABLE_MEMBERREF) {
353 field = field_from_memberref (image, token, retklass, context, error);
354 mono_loader_assert_no_error ();
356 type = mono_metadata_typedef_from_field (image, mono_metadata_token_index (token));
358 mono_error_set_bad_image (error, image, "Invalid field token 0x%08x", token);
361 k = mono_class_get_checked (image, MONO_TOKEN_TYPE_DEF | type, error);
368 field = mono_class_get_field (k, token);
370 mono_loader_assert_no_error ();
371 mono_error_set_bad_image (error, image, "Could not resolve field token 0x%08x", token);
375 if (field && field->parent && !field->parent->generic_class && !field->parent->generic_container) {
376 mono_image_lock (image);
377 mono_conc_hashtable_insert (image->field_cache, GUINT_TO_POINTER (token), field);
378 mono_image_unlock (image);
381 mono_loader_assert_no_error ();
386 mono_metadata_signature_vararg_match (MonoMethodSignature *sig1, MonoMethodSignature *sig2)
390 if (sig1->hasthis != sig2->hasthis ||
391 sig1->sentinelpos != sig2->sentinelpos)
394 for (i = 0; i < sig1->sentinelpos; i++) {
395 MonoType *p1 = sig1->params[i];
396 MonoType *p2 = sig2->params[i];
398 /*if (p1->attrs != p2->attrs)
401 if (!mono_metadata_type_equal (p1, p2))
405 if (!mono_metadata_type_equal (sig1->ret, sig2->ret))
411 find_method_in_class (MonoClass *klass, const char *name, const char *qname, const char *fqname,
412 MonoMethodSignature *sig, MonoClass *from_class, MonoError *error)
416 /* Search directly in the metadata to avoid calling setup_methods () */
417 mono_error_init (error);
419 /* FIXME: !from_class->generic_class condition causes test failures. */
420 if (klass->type_token && !image_is_dynamic (klass->image) && !klass->methods && !klass->rank && klass == from_class && !from_class->generic_class) {
421 for (i = 0; i < klass->method.count; ++i) {
422 guint32 cols [MONO_METHOD_SIZE];
425 MonoMethodSignature *other_sig;
427 mono_metadata_decode_table_row (klass->image, MONO_TABLE_METHOD, klass->method.first + i, cols, MONO_METHOD_SIZE);
429 m_name = mono_metadata_string_heap (klass->image, cols [MONO_METHOD_NAME]);
431 if (!((fqname && !strcmp (m_name, fqname)) ||
432 (qname && !strcmp (m_name, qname)) ||
433 (name && !strcmp (m_name, name))))
436 method = mono_get_method_checked (klass->image, MONO_TOKEN_METHOD_DEF | (klass->method.first + i + 1), klass, NULL, error);
437 if (!mono_error_ok (error)) //bail out if we hit a loader error
440 other_sig = mono_method_signature_checked (method, error);
441 if (!mono_error_ok (error)) //bail out if we hit a loader error
443 if (other_sig && (sig->call_convention != MONO_CALL_VARARG) && mono_metadata_signature_equal (sig, other_sig))
449 mono_class_setup_methods (klass); /* FIXME don't swallow the error here. */
451 We can't fail lookup of methods otherwise the runtime will fail with MissingMethodException instead of TypeLoadException.
452 See mono/tests/generic-type-load-exception.2.il
453 FIXME we should better report this error to the caller
455 if (!klass->methods || mono_class_has_failure (klass)) {
456 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
460 for (i = 0; i < klass->method.count; ++i) {
461 MonoMethod *m = klass->methods [i];
462 MonoMethodSignature *msig;
464 /* We must cope with failing to load some of the types. */
468 if (!((fqname && !strcmp (m->name, fqname)) ||
469 (qname && !strcmp (m->name, qname)) ||
470 (name && !strcmp (m->name, name))))
472 msig = mono_method_signature_checked (m, error);
473 if (!mono_error_ok (error)) //bail out if we hit a loader error
479 if (sig->call_convention == MONO_CALL_VARARG) {
480 if (mono_metadata_signature_vararg_match (sig, msig))
483 if (mono_metadata_signature_equal (sig, msig))
488 if (i < klass->method.count)
489 return mono_class_get_method_by_index (from_class, i);
494 find_method (MonoClass *in_class, MonoClass *ic, const char* name, MonoMethodSignature *sig, MonoClass *from_class, MonoError *error)
497 char *qname, *fqname, *class_name;
498 gboolean is_interface;
499 MonoMethod *result = NULL;
500 MonoClass *initial_class = in_class;
502 mono_error_init (error);
503 is_interface = MONO_CLASS_IS_INTERFACE (in_class);
506 class_name = mono_type_get_name_full (&ic->byval_arg, MONO_TYPE_NAME_FORMAT_IL);
508 qname = g_strconcat (class_name, ".", name, NULL);
509 if (ic->name_space && ic->name_space [0])
510 fqname = g_strconcat (ic->name_space, ".", class_name, ".", name, NULL);
514 class_name = qname = fqname = NULL;
517 g_assert (from_class);
518 result = find_method_in_class (in_class, name, qname, fqname, sig, from_class, error);
519 if (result || !mono_error_ok (error))
522 if (name [0] == '.' && (!strcmp (name, ".ctor") || !strcmp (name, ".cctor")))
526 * This happens when we fail to lazily load the interfaces of one of the types.
527 * On such case we can't just bail out since user code depends on us trying harder.
529 if (from_class->interface_offsets_count != in_class->interface_offsets_count) {
530 in_class = in_class->parent;
531 from_class = from_class->parent;
535 for (i = 0; i < in_class->interface_offsets_count; i++) {
536 MonoClass *in_ic = in_class->interfaces_packed [i];
537 MonoClass *from_ic = from_class->interfaces_packed [i];
538 char *ic_qname, *ic_fqname, *ic_class_name;
540 ic_class_name = mono_type_get_name_full (&in_ic->byval_arg, MONO_TYPE_NAME_FORMAT_IL);
541 ic_qname = g_strconcat (ic_class_name, ".", name, NULL);
542 if (in_ic->name_space && in_ic->name_space [0])
543 ic_fqname = g_strconcat (in_ic->name_space, ".", ic_class_name, ".", name, NULL);
547 result = find_method_in_class (in_ic, ic ? name : NULL, ic_qname, ic_fqname, sig, from_ic, error);
548 g_free (ic_class_name);
551 if (result || !mono_error_ok (error))
555 in_class = in_class->parent;
556 from_class = from_class->parent;
558 g_assert (!in_class == !from_class);
561 result = find_method_in_class (mono_defaults.object_class, name, qname, fqname, sig, mono_defaults.object_class, error);
563 //we did not find the method
564 if (!result && mono_error_ok (error)) {
565 char *desc = mono_signature_get_desc (sig, FALSE);
566 mono_error_set_method_load (error, initial_class, name, "Could not find method with signature %s", desc);
577 static MonoMethodSignature*
578 inflate_generic_signature_checked (MonoImage *image, MonoMethodSignature *sig, MonoGenericContext *context, MonoError *error)
580 MonoMethodSignature *res;
584 mono_error_init (error);
588 res = (MonoMethodSignature *)g_malloc0 (MONO_SIZEOF_METHOD_SIGNATURE + ((gint32)sig->param_count) * sizeof (MonoType*));
589 res->param_count = sig->param_count;
590 res->sentinelpos = -1;
591 res->ret = mono_class_inflate_generic_type_checked (sig->ret, context, error);
592 if (!mono_error_ok (error))
594 is_open = mono_class_is_open_constructed_type (res->ret);
595 for (i = 0; i < sig->param_count; ++i) {
596 res->params [i] = mono_class_inflate_generic_type_checked (sig->params [i], context, error);
597 if (!mono_error_ok (error))
601 is_open = mono_class_is_open_constructed_type (res->params [i]);
603 res->hasthis = sig->hasthis;
604 res->explicit_this = sig->explicit_this;
605 res->call_convention = sig->call_convention;
606 res->pinvoke = sig->pinvoke;
607 res->generic_param_count = sig->generic_param_count;
608 res->sentinelpos = sig->sentinelpos;
609 res->has_type_parameters = is_open;
610 res->is_inflated = 1;
615 mono_metadata_free_type (res->ret);
616 for (i = 0; i < sig->param_count; ++i) {
618 mono_metadata_free_type (res->params [i]);
625 * mono_inflate_generic_signature:
627 * Inflate SIG with CONTEXT, and return a canonical copy. On error, set ERROR, and return NULL.
630 mono_inflate_generic_signature (MonoMethodSignature *sig, MonoGenericContext *context, MonoError *error)
632 MonoMethodSignature *res, *cached;
634 res = inflate_generic_signature_checked (NULL, sig, context, error);
635 if (!mono_error_ok (error))
637 cached = mono_metadata_get_inflated_signature (res, context);
639 mono_metadata_free_inflated_signature (res);
643 static MonoMethodHeader*
644 inflate_generic_header (MonoMethodHeader *header, MonoGenericContext *context, MonoError *error)
646 size_t locals_size = sizeof (gpointer) * header->num_locals;
647 size_t clauses_size = header->num_clauses * sizeof (MonoExceptionClause);
648 size_t header_size = MONO_SIZEOF_METHOD_HEADER + locals_size + clauses_size;
649 MonoMethodHeader *res = (MonoMethodHeader *)g_malloc0 (header_size);
650 res->num_locals = header->num_locals;
651 res->clauses = (MonoExceptionClause *) &res->locals [res->num_locals] ;
652 memcpy (res->clauses, header->clauses, clauses_size);
654 res->code = header->code;
655 res->code_size = header->code_size;
656 res->max_stack = header->max_stack;
657 res->num_clauses = header->num_clauses;
658 res->init_locals = header->init_locals;
660 res->is_transient = TRUE;
662 mono_error_init (error);
664 for (int i = 0; i < header->num_locals; ++i) {
665 res->locals [i] = mono_class_inflate_generic_type_checked (header->locals [i], context, error);
669 if (res->num_clauses) {
670 for (int i = 0; i < header->num_clauses; ++i) {
671 MonoExceptionClause *clause = &res->clauses [i];
672 if (clause->flags != MONO_EXCEPTION_CLAUSE_NONE)
674 clause->data.catch_class = mono_class_inflate_generic_class_checked (clause->data.catch_class, context, error);
686 * token is the method_ref/def/spec token used in a call IL instruction.
687 * @deprecated use the _checked variant
688 * Notes: runtime code MUST not use this function
691 mono_method_get_signature_full (MonoMethod *method, MonoImage *image, guint32 token, MonoGenericContext *context)
694 MonoMethodSignature *res = mono_method_get_signature_checked (method, image, token, context, &error);
695 mono_error_cleanup (&error);
700 mono_method_get_signature_checked (MonoMethod *method, MonoImage *image, guint32 token, MonoGenericContext *context, MonoError *error)
702 int table = mono_metadata_token_table (token);
703 int idx = mono_metadata_token_index (token);
705 guint32 cols [MONO_MEMBERREF_SIZE];
706 MonoMethodSignature *sig;
709 mono_error_init (error);
711 /* !table is for wrappers: we should really assign their own token to them */
712 if (!table || table == MONO_TABLE_METHOD)
713 return mono_method_signature_checked (method, error);
715 if (table == MONO_TABLE_METHODSPEC) {
716 /* the verifier (do_invoke_method) will turn the NULL into a verifier error */
717 if ((method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) || !method->is_inflated) {
718 mono_error_set_bad_image (error, image, "Method is a pinvoke or open generic");
722 return mono_method_signature_checked (method, error);
725 if (method->klass->generic_class)
726 return mono_method_signature_checked (method, error);
728 if (image_is_dynamic (image)) {
729 sig = mono_reflection_lookup_signature (image, method, token, error);
733 mono_metadata_decode_row (&image->tables [MONO_TABLE_MEMBERREF], idx-1, cols, MONO_MEMBERREF_SIZE);
734 sig_idx = cols [MONO_MEMBERREF_SIGNATURE];
736 sig = (MonoMethodSignature *)find_cached_memberref_sig (image, sig_idx);
738 if (!mono_verifier_verify_memberref_method_signature (image, sig_idx, NULL)) {
739 guint32 klass = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
740 const char *fname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
742 //FIXME include the verification error
743 mono_error_set_bad_image (error, image, "Bad method signature class token 0x%08x field name %s token 0x%08x", klass, fname, token);
747 ptr = mono_metadata_blob_heap (image, sig_idx);
748 mono_metadata_decode_blob_size (ptr, &ptr);
750 sig = mono_metadata_parse_method_signature_full (image, NULL, 0, ptr, NULL, error);
754 sig = (MonoMethodSignature *)cache_memberref_sig (image, sig_idx, sig);
756 /* FIXME: we probably should verify signature compat in the dynamic case too*/
757 if (!mono_verifier_is_sig_compatible (image, method, sig)) {
758 guint32 klass = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
759 const char *fname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
761 mono_error_set_bad_image (error, image, "Incompatible method signature class token 0x%08x field name %s token 0x%08x", klass, fname, token);
767 MonoMethodSignature *cached;
769 /* This signature is not owned by a MonoMethod, so need to cache */
770 sig = inflate_generic_signature_checked (image, sig, context, error);
771 if (!mono_error_ok (error))
774 cached = mono_metadata_get_inflated_signature (sig, context);
776 mono_metadata_free_inflated_signature (sig);
778 inflated_signatures_size += mono_metadata_signature_size (cached);
782 g_assert (mono_error_ok (error));
787 * token is the method_ref/def/spec token used in a call IL instruction.
788 * @deprecated use the _checked variant
789 * Notes: runtime code MUST not use this function
792 mono_method_get_signature (MonoMethod *method, MonoImage *image, guint32 token)
795 MonoMethodSignature *res = mono_method_get_signature_checked (method, image, token, NULL, &error);
796 mono_error_cleanup (&error);
800 /* this is only for the typespec array methods */
802 mono_method_search_in_array_class (MonoClass *klass, const char *name, MonoMethodSignature *sig)
806 mono_class_setup_methods (klass);
807 g_assert (!mono_class_has_failure (klass)); /*FIXME this should not fail, right?*/
808 for (i = 0; i < klass->method.count; ++i) {
809 MonoMethod *method = klass->methods [i];
810 if (strcmp (method->name, name) == 0 && sig->param_count == method->signature->param_count)
817 method_from_memberref (MonoImage *image, guint32 idx, MonoGenericContext *typespec_context,
818 gboolean *used_context, MonoError *error)
820 MonoClass *klass = NULL;
821 MonoMethod *method = NULL;
822 MonoTableInfo *tables = image->tables;
824 guint32 nindex, class_index, sig_idx;
826 MonoMethodSignature *sig;
829 mono_error_init (error);
831 mono_metadata_decode_row (&tables [MONO_TABLE_MEMBERREF], idx-1, cols, 3);
832 nindex = cols [MONO_MEMBERREF_CLASS] >> MONO_MEMBERREF_PARENT_BITS;
833 class_index = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
834 /*g_print ("methodref: 0x%x 0x%x %s\n", class, nindex,
835 mono_metadata_string_heap (m, cols [MONO_MEMBERREF_NAME]));*/
837 mname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
840 * Whether we actually used the `typespec_context' or not.
841 * This is used to tell our caller whether or not it's safe to insert the returned
842 * method into a cache.
845 *used_context = class_index == MONO_MEMBERREF_PARENT_TYPESPEC;
847 switch (class_index) {
848 case MONO_MEMBERREF_PARENT_TYPEREF:
849 klass = mono_class_from_typeref_checked (image, MONO_TOKEN_TYPE_REF | nindex, error);
853 case MONO_MEMBERREF_PARENT_TYPESPEC:
855 * Parse the TYPESPEC in the parent's context.
857 klass = mono_class_get_and_inflate_typespec_checked (image, MONO_TOKEN_TYPE_SPEC | nindex, typespec_context, error);
861 case MONO_MEMBERREF_PARENT_TYPEDEF:
862 klass = mono_class_get_checked (image, MONO_TOKEN_TYPE_DEF | nindex, error);
866 case MONO_MEMBERREF_PARENT_METHODDEF: {
867 method = mono_get_method_checked (image, MONO_TOKEN_METHOD_DEF | nindex, NULL, NULL, error);
873 mono_error_set_bad_image (error, image, "Memberref parent unknown: class: %d, index %d", class_index, nindex);
878 mono_class_init (klass);
880 sig_idx = cols [MONO_MEMBERREF_SIGNATURE];
882 if (!mono_verifier_verify_memberref_method_signature (image, sig_idx, NULL)) {
883 mono_error_set_method_load (error, klass, mname, "Verifier rejected method signature");
887 ptr = mono_metadata_blob_heap (image, sig_idx);
888 mono_metadata_decode_blob_size (ptr, &ptr);
890 sig = (MonoMethodSignature *)find_cached_memberref_sig (image, sig_idx);
892 sig = mono_metadata_parse_method_signature_full (image, NULL, 0, ptr, NULL, error);
896 sig = (MonoMethodSignature *)cache_memberref_sig (image, sig_idx, sig);
899 switch (class_index) {
900 case MONO_MEMBERREF_PARENT_TYPEREF:
901 case MONO_MEMBERREF_PARENT_TYPEDEF:
902 method = find_method (klass, NULL, mname, sig, klass, error);
905 case MONO_MEMBERREF_PARENT_TYPESPEC: {
908 type = &klass->byval_arg;
910 if (type->type != MONO_TYPE_ARRAY && type->type != MONO_TYPE_SZARRAY) {
911 MonoClass *in_class = klass->generic_class ? klass->generic_class->container_class : klass;
912 method = find_method (in_class, NULL, mname, sig, klass, error);
916 /* we're an array and we created these methods already in klass in mono_class_init () */
917 method = mono_method_search_in_array_class (klass, mname, sig);
921 mono_error_set_bad_image (error, image,"Memberref parent unknown: class: %d, index %d", class_index, nindex);
925 if (!method && mono_error_ok (error)) {
926 char *msig = mono_signature_get_desc (sig, FALSE);
927 GString *s = g_string_new (mname);
928 if (sig->generic_param_count)
929 g_string_append_printf (s, "<[%d]>", sig->generic_param_count);
930 g_string_append_printf (s, "(%s)", msig);
932 msig = g_string_free (s, FALSE);
934 mono_loader_assert_no_error ();
935 mono_error_set_method_load (error, klass, mname, "Could not find method %s", msig);
940 mono_loader_assert_no_error ();
944 mono_loader_assert_no_error ();
945 g_assert (!mono_error_ok (error));
950 method_from_methodspec (MonoImage *image, MonoGenericContext *context, guint32 idx, MonoError *error)
954 MonoTableInfo *tables = image->tables;
955 MonoGenericContext new_context;
956 MonoGenericInst *inst;
958 guint32 cols [MONO_METHODSPEC_SIZE];
959 guint32 token, nindex, param_count;
961 mono_error_init (error);
963 mono_metadata_decode_row (&tables [MONO_TABLE_METHODSPEC], idx - 1, cols, MONO_METHODSPEC_SIZE);
964 token = cols [MONO_METHODSPEC_METHOD];
965 nindex = token >> MONO_METHODDEFORREF_BITS;
967 if (!mono_verifier_verify_methodspec_signature (image, cols [MONO_METHODSPEC_SIGNATURE], NULL)) {
968 mono_error_set_bad_image (error, image, "Bad method signals signature 0x%08x", idx);
972 ptr = mono_metadata_blob_heap (image, cols [MONO_METHODSPEC_SIGNATURE]);
974 mono_metadata_decode_value (ptr, &ptr);
976 param_count = mono_metadata_decode_value (ptr, &ptr);
978 inst = mono_metadata_parse_generic_inst (image, NULL, param_count, ptr, &ptr, error);
982 if (context && inst->is_open) {
983 inst = mono_metadata_inflate_generic_inst (inst, context, error);
984 if (!mono_error_ok (error))
988 if ((token & MONO_METHODDEFORREF_MASK) == MONO_METHODDEFORREF_METHODDEF) {
989 method = mono_get_method_checked (image, MONO_TOKEN_METHOD_DEF | nindex, NULL, context, error);
993 method = method_from_memberref (image, nindex, context, NULL, error);
999 klass = method->klass;
1001 if (klass->generic_class) {
1002 g_assert (method->is_inflated);
1003 method = ((MonoMethodInflated *) method)->declaring;
1006 new_context.class_inst = klass->generic_class ? klass->generic_class->context.class_inst : NULL;
1007 new_context.method_inst = inst;
1009 method = mono_class_inflate_generic_method_full_checked (method, klass, &new_context, error);
1010 mono_loader_assert_no_error ();
1014 struct _MonoDllMap {
1022 static MonoDllMap *global_dll_map;
1025 mono_dllmap_lookup_list (MonoDllMap *dll_map, const char *dll, const char* func, const char **rdll, const char **rfunc) {
1033 global_loader_data_lock ();
1036 * we use the first entry we find that matches, since entries from
1037 * the config file are prepended to the list and we document that the
1038 * later entries win.
1040 for (; dll_map; dll_map = dll_map->next) {
1041 if (dll_map->dll [0] == 'i' && dll_map->dll [1] == ':') {
1042 if (g_ascii_strcasecmp (dll_map->dll + 2, dll))
1044 } else if (strcmp (dll_map->dll, dll)) {
1047 if (!found && dll_map->target) {
1048 *rdll = dll_map->target;
1050 /* we don't quit here, because we could find a full
1051 * entry that matches also function and that has priority.
1054 if (dll_map->func && strcmp (dll_map->func, func) == 0) {
1055 *rfunc = dll_map->target_func;
1060 global_loader_data_unlock ();
1065 mono_dllmap_lookup (MonoImage *assembly, const char *dll, const char* func, const char **rdll, const char **rfunc)
1068 if (assembly && assembly->dll_map) {
1069 res = mono_dllmap_lookup_list (assembly->dll_map, dll, func, rdll, rfunc);
1073 return mono_dllmap_lookup_list (global_dll_map, dll, func, rdll, rfunc);
1077 * mono_dllmap_insert:
1078 * @assembly: if NULL, this is a global mapping, otherwise the remapping of the dynamic library will only apply to the specified assembly
1079 * @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
1080 * @func: if not null, the mapping will only applied to the named function (the value of EntryPoint)
1081 * @tdll: The name of the library to map the specified @dll if it matches.
1082 * @tfunc: if func is not NULL, the name of the function that replaces the invocation
1084 * LOCKING: Acquires the loader lock.
1086 * This function is used to programatically add DllImport remapping in either
1087 * a specific assembly, or as a global remapping. This is done by remapping
1088 * references in a DllImport attribute from the @dll library name into the @tdll
1089 * name. If the @dll name contains the prefix "i:", the comparison of the
1090 * library name is done without case sensitivity.
1092 * If you pass @func, this is the name of the EntryPoint in a DllImport if specified
1093 * or the name of the function as determined by DllImport. If you pass @func, you
1094 * must also pass @tfunc which is the name of the target function to invoke on a match.
1097 * mono_dllmap_insert (NULL, "i:libdemo.dll", NULL, relocated_demo_path, NULL);
1099 * The above will remap DllImport statments for "libdemo.dll" and "LIBDEMO.DLL" to
1100 * the contents of relocated_demo_path for all assemblies in the Mono process.
1102 * NOTE: This can be called before the runtime is initialized, for example from
1103 * mono_config_parse ().
1106 mono_dllmap_insert (MonoImage *assembly, const char *dll, const char *func, const char *tdll, const char *tfunc)
1110 mono_loader_init ();
1113 entry = (MonoDllMap *)g_malloc0 (sizeof (MonoDllMap));
1114 entry->dll = dll? g_strdup (dll): NULL;
1115 entry->target = tdll? g_strdup (tdll): NULL;
1116 entry->func = func? g_strdup (func): NULL;
1117 entry->target_func = tfunc? g_strdup (tfunc): NULL;
1119 global_loader_data_lock ();
1120 entry->next = global_dll_map;
1121 global_dll_map = entry;
1122 global_loader_data_unlock ();
1124 entry = (MonoDllMap *)mono_image_alloc0 (assembly, sizeof (MonoDllMap));
1125 entry->dll = dll? mono_image_strdup (assembly, dll): NULL;
1126 entry->target = tdll? mono_image_strdup (assembly, tdll): NULL;
1127 entry->func = func? mono_image_strdup (assembly, func): NULL;
1128 entry->target_func = tfunc? mono_image_strdup (assembly, tfunc): NULL;
1130 mono_image_lock (assembly);
1131 entry->next = assembly->dll_map;
1132 assembly->dll_map = entry;
1133 mono_image_unlock (assembly);
1138 free_dllmap (MonoDllMap *map)
1141 MonoDllMap *next = map->next;
1144 g_free (map->target);
1146 g_free (map->target_func);
1153 dllmap_cleanup (void)
1155 free_dllmap (global_dll_map);
1156 global_dll_map = NULL;
1159 static GHashTable *global_module_map;
1162 cached_module_load (const char *name, int flags, char **err)
1168 global_loader_data_lock ();
1169 if (!global_module_map)
1170 global_module_map = g_hash_table_new (g_str_hash, g_str_equal);
1171 res = (MonoDl *)g_hash_table_lookup (global_module_map, name);
1173 global_loader_data_unlock ();
1176 res = mono_dl_open (name, flags, err);
1178 g_hash_table_insert (global_module_map, g_strdup (name), res);
1179 global_loader_data_unlock ();
1183 static MonoDl *internal_module;
1186 is_absolute_path (const char *path)
1188 #ifdef PLATFORM_MACOSX
1189 if (!strncmp (path, "@executable_path/", 17) || !strncmp (path, "@loader_path/", 13) ||
1190 !strncmp (path, "@rpath/", 7))
1193 return g_path_is_absolute (path);
1197 mono_lookup_pinvoke_call (MonoMethod *method, const char **exc_class, const char **exc_arg)
1199 MonoImage *image = method->klass->image;
1200 MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *)method;
1201 MonoTableInfo *tables = image->tables;
1202 MonoTableInfo *im = &tables [MONO_TABLE_IMPLMAP];
1203 MonoTableInfo *mr = &tables [MONO_TABLE_MODULEREF];
1204 guint32 im_cols [MONO_IMPLMAP_SIZE];
1205 guint32 scope_token;
1206 const char *import = NULL;
1207 const char *orig_scope;
1208 const char *new_scope;
1210 char *full_name, *file_name, *found_name = NULL;
1212 MonoDl *module = NULL;
1213 gboolean cached = FALSE;
1215 g_assert (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL);
1223 return piinfo->addr;
1225 if (image_is_dynamic (method->klass->image)) {
1226 MonoReflectionMethodAux *method_aux =
1227 (MonoReflectionMethodAux *)g_hash_table_lookup (
1228 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
1232 import = method_aux->dllentry;
1233 orig_scope = method_aux->dll;
1236 if (!piinfo->implmap_idx || piinfo->implmap_idx > im->rows)
1239 mono_metadata_decode_row (im, piinfo->implmap_idx - 1, im_cols, MONO_IMPLMAP_SIZE);
1241 if (!im_cols [MONO_IMPLMAP_SCOPE] || im_cols [MONO_IMPLMAP_SCOPE] > mr->rows)
1244 piinfo->piflags = im_cols [MONO_IMPLMAP_FLAGS];
1245 import = mono_metadata_string_heap (image, im_cols [MONO_IMPLMAP_NAME]);
1246 scope_token = mono_metadata_decode_row_col (mr, im_cols [MONO_IMPLMAP_SCOPE] - 1, MONO_MODULEREF_NAME);
1247 orig_scope = mono_metadata_string_heap (image, scope_token);
1250 mono_dllmap_lookup (image, orig_scope, import, &new_scope, &import);
1253 mono_image_lock (image);
1254 if (!image->pinvoke_scopes) {
1255 image->pinvoke_scopes = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL);
1256 image->pinvoke_scope_filenames = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
1258 module = (MonoDl *)g_hash_table_lookup (image->pinvoke_scopes, new_scope);
1259 found_name = (char *)g_hash_table_lookup (image->pinvoke_scope_filenames, new_scope);
1260 mono_image_unlock (image);
1264 found_name = g_strdup (found_name);
1268 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1269 "DllImport attempting to load: '%s'.", new_scope);
1271 /* we allow a special name to dlopen from the running process namespace */
1272 if (strcmp (new_scope, "__Internal") == 0){
1273 if (internal_module == NULL)
1274 internal_module = mono_dl_open (NULL, MONO_DL_LAZY, &error_msg);
1275 module = internal_module;
1280 * Try loading the module using a variety of names
1282 for (i = 0; i < 5; ++i) {
1283 char *base_name = NULL, *dir_name = NULL;
1284 gboolean is_absolute = is_absolute_path (new_scope);
1288 /* Try the original name */
1289 file_name = g_strdup (new_scope);
1292 /* Try trimming the .dll extension */
1293 if (strstr (new_scope, ".dll") == (new_scope + strlen (new_scope) - 4)) {
1294 file_name = g_strdup (new_scope);
1295 file_name [strlen (new_scope) - 4] = '\0';
1302 dir_name = g_path_get_dirname (new_scope);
1303 base_name = g_path_get_basename (new_scope);
1304 if (strstr (base_name, "lib") != base_name) {
1305 char *tmp = g_strdup_printf ("lib%s", base_name);
1308 file_name = g_strdup_printf ("%s%s%s", dir_name, G_DIR_SEPARATOR_S, base_name);
1311 } else if (strstr (new_scope, "lib") != new_scope) {
1312 file_name = g_strdup_printf ("lib%s", new_scope);
1317 if (!is_absolute && mono_dl_get_system_dir ()) {
1318 dir_name = (char*)mono_dl_get_system_dir ();
1319 file_name = g_path_get_basename (new_scope);
1325 #ifndef TARGET_WIN32
1326 if (!g_ascii_strcasecmp ("user32.dll", new_scope) ||
1327 !g_ascii_strcasecmp ("kernel32.dll", new_scope) ||
1328 !g_ascii_strcasecmp ("user32", new_scope) ||
1329 !g_ascii_strcasecmp ("kernel", new_scope)) {
1330 file_name = g_strdup ("libMonoSupportW.so");
1334 #ifndef TARGET_WIN32
1341 dir_name = g_path_get_dirname (file_name);
1343 base_name = g_path_get_basename (file_name);
1346 if (!module && is_absolute) {
1347 module = cached_module_load (file_name, MONO_DL_LAZY, &error_msg);
1349 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1350 "DllImport error loading library '%s': '%s'.",
1351 file_name, error_msg);
1354 found_name = g_strdup (file_name);
1358 if (!module && !is_absolute) {
1362 for (j = 0; j < 3; ++j) {
1367 mdirname = g_path_get_dirname (image->name);
1369 case 1: /* @executable_path@/../lib */
1373 binl = mono_dl_get_executable_path (buf, sizeof (buf));
1375 char *base, *newbase;
1378 resolvedname = mono_path_resolve_symlinks (buf);
1380 base = g_path_get_dirname (resolvedname);
1381 newbase = g_path_get_dirname(base);
1382 mdirname = g_strdup_printf ("%s/lib", newbase);
1384 g_free (resolvedname);
1391 case 2: /* @executable_path@/../Libraries */
1395 binl = mono_dl_get_executable_path (buf, sizeof (buf));
1397 char *base, *newbase;
1400 resolvedname = mono_path_resolve_symlinks (buf);
1402 base = g_path_get_dirname (resolvedname);
1403 newbase = g_path_get_dirname(base);
1404 mdirname = g_strdup_printf ("%s/Libraries", newbase);
1406 g_free (resolvedname);
1418 while ((full_name = mono_dl_build_path (mdirname, file_name, &iter))) {
1419 module = cached_module_load (full_name, MONO_DL_LAZY, &error_msg);
1421 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1422 "DllImport error loading library '%s': '%s'.",
1423 full_name, error_msg);
1426 found_name = g_strdup (full_name);
1442 char *file_or_base = is_absolute ? base_name : file_name;
1443 while ((full_name = mono_dl_build_path (dir_name, file_or_base, &iter))) {
1444 module = cached_module_load (full_name, MONO_DL_LAZY, &error_msg);
1446 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1447 "DllImport error loading library '%s': '%s'.",
1448 full_name, error_msg);
1451 found_name = g_strdup (full_name);
1460 module = cached_module_load (file_name, MONO_DL_LAZY, &error_msg);
1462 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1463 "DllImport error loading library '%s': '%s'.",
1464 file_name, error_msg);
1466 found_name = g_strdup (file_name);
1481 mono_trace (G_LOG_LEVEL_WARNING, MONO_TRACE_DLLIMPORT,
1482 "DllImport unable to load library '%s'.",
1487 *exc_class = "DllNotFoundException";
1488 *exc_arg = new_scope;
1494 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1495 "DllImport loaded library '%s'.", found_name);
1496 mono_image_lock (image);
1497 if (!g_hash_table_lookup (image->pinvoke_scopes, new_scope)) {
1498 g_hash_table_insert (image->pinvoke_scopes, g_strdup (new_scope), module);
1499 g_hash_table_insert (image->pinvoke_scope_filenames, g_strdup (new_scope), g_strdup (found_name));
1501 mono_image_unlock (image);
1504 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1505 "DllImport searching in: '%s' ('%s').", new_scope, found_name);
1506 g_free (found_name);
1509 if (import && import [0] == '#' && isdigit (import [1])) {
1513 id = strtol (import + 1, &end, 10);
1514 if (id > 0 && *end == '\0')
1518 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1519 "Searching for '%s'.", import);
1521 if (piinfo->piflags & PINVOKE_ATTRIBUTE_NO_MANGLE) {
1522 error_msg = mono_dl_symbol (module, import, &piinfo->addr);
1524 char *mangled_name = NULL, *mangled_name2 = NULL;
1527 int mangle_param_count;
1533 * Search using a variety of mangled names
1535 for (mangle_charset = 0; mangle_charset <= 1; mangle_charset ++) {
1536 for (mangle_stdcall = 0; mangle_stdcall <= 1; mangle_stdcall ++) {
1537 gboolean need_param_count = FALSE;
1539 if (mangle_stdcall > 0)
1540 need_param_count = TRUE;
1542 for (mangle_param_count = 0; mangle_param_count <= (need_param_count ? 256 : 0); mangle_param_count += 4) {
1547 mangled_name = (char*)import;
1548 switch (piinfo->piflags & PINVOKE_ATTRIBUTE_CHAR_SET_MASK) {
1549 case PINVOKE_ATTRIBUTE_CHAR_SET_UNICODE:
1550 /* Try the mangled name first */
1551 if (mangle_charset == 0)
1552 mangled_name = g_strconcat (import, "W", NULL);
1554 case PINVOKE_ATTRIBUTE_CHAR_SET_AUTO:
1556 if (mangle_charset == 0)
1557 mangled_name = g_strconcat (import, "W", NULL);
1559 /* Try the mangled name last */
1560 if (mangle_charset == 1)
1561 mangled_name = g_strconcat (import, "A", NULL);
1564 case PINVOKE_ATTRIBUTE_CHAR_SET_ANSI:
1566 /* Try the mangled name last */
1567 if (mangle_charset == 1)
1568 mangled_name = g_strconcat (import, "A", NULL);
1573 if (mangle_param_count == 0)
1574 param_count = mono_method_signature (method)->param_count * sizeof (gpointer);
1576 /* Try brute force, since it would be very hard to compute the stack usage correctly */
1577 param_count = mangle_param_count;
1579 /* Try the stdcall mangled name */
1581 * gcc under windows creates mangled names without the underscore, but MS.NET
1582 * doesn't support it, so we doesn't support it either.
1584 if (mangle_stdcall == 1)
1585 mangled_name2 = g_strdup_printf ("_%s@%d", mangled_name, param_count);
1587 mangled_name2 = mangled_name;
1589 mangled_name2 = mangled_name;
1592 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1593 "Probing '%s'.", mangled_name2);
1595 error_msg = mono_dl_symbol (module, mangled_name2, &piinfo->addr);
1598 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1599 "Found as '%s'.", mangled_name2);
1601 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1602 "Could not find '%s' due to '%s'.", mangled_name2, error_msg);
1607 if (mangled_name != mangled_name2)
1608 g_free (mangled_name2);
1609 if (mangled_name != import)
1610 g_free (mangled_name);
1616 if (!piinfo->addr) {
1619 *exc_class = "EntryPointNotFoundException";
1624 return piinfo->addr;
1628 * LOCKING: assumes the loader lock to be taken.
1631 mono_get_method_from_token (MonoImage *image, guint32 token, MonoClass *klass,
1632 MonoGenericContext *context, gboolean *used_context, MonoError *error)
1635 int table = mono_metadata_token_table (token);
1636 int idx = mono_metadata_token_index (token);
1637 MonoTableInfo *tables = image->tables;
1638 MonoGenericContainer *generic_container = NULL, *container = NULL;
1639 const char *sig = NULL;
1640 guint32 cols [MONO_TYPEDEF_SIZE];
1642 mono_error_init (error);
1644 if (image_is_dynamic (image)) {
1645 MonoClass *handle_class;
1647 result = (MonoMethod *)mono_lookup_dynamic_token_class (image, token, TRUE, &handle_class, context, error);
1648 mono_error_assert_ok (error);
1649 mono_loader_assert_no_error ();
1651 // This checks the memberref type as well
1652 if (result && handle_class != mono_defaults.methodhandle_class) {
1653 mono_error_set_bad_image (error, image, "Bad method token 0x%08x on dynamic image", token);
1659 if (table != MONO_TABLE_METHOD) {
1660 if (table == MONO_TABLE_METHODSPEC) {
1661 if (used_context) *used_context = TRUE;
1662 return method_from_methodspec (image, context, idx, error);
1664 if (table != MONO_TABLE_MEMBERREF) {
1665 mono_error_set_bad_image (error, image, "Bad method token 0x%08x.", token);
1668 return method_from_memberref (image, idx, context, used_context, error);
1671 if (used_context) *used_context = FALSE;
1673 if (idx > image->tables [MONO_TABLE_METHOD].rows) {
1674 mono_error_set_bad_image (error, image, "Bad method token 0x%08x (out of bounds).", token);
1679 guint32 type = mono_metadata_typedef_from_method (image, token);
1681 mono_error_set_bad_image (error, image, "Bad method token 0x%08x (could not find corresponding typedef).", token);
1684 klass = mono_class_get_checked (image, MONO_TOKEN_TYPE_DEF | type, error);
1689 mono_metadata_decode_row (&image->tables [MONO_TABLE_METHOD], idx - 1, cols, 6);
1691 if ((cols [2] & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
1692 (cols [1] & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL)) {
1693 result = (MonoMethod *)mono_image_alloc0 (image, sizeof (MonoMethodPInvoke));
1695 result = (MonoMethod *)mono_image_alloc0 (image, sizeof (MonoMethod));
1696 methods_size += sizeof (MonoMethod);
1699 mono_stats.method_count ++;
1702 result->klass = klass;
1703 result->flags = cols [2];
1704 result->iflags = cols [1];
1705 result->token = token;
1706 result->name = mono_metadata_string_heap (image, cols [3]);
1708 if (!sig) /* already taken from the methodref */
1709 sig = mono_metadata_blob_heap (image, cols [4]);
1710 /* size = */ mono_metadata_decode_blob_size (sig, &sig);
1712 container = klass->generic_container;
1715 * load_generic_params does a binary search so only call it if the method
1719 generic_container = mono_metadata_load_generic_params (image, token, container);
1720 mono_loader_assert_no_error (); /* FIXME don't swallow this error. */
1722 if (generic_container) {
1723 result->is_generic = TRUE;
1724 generic_container->owner.method = result;
1725 generic_container->is_anonymous = FALSE; // Method is now known, container is no longer anonymous
1726 /*FIXME put this before the image alloc*/
1727 if (!mono_metadata_load_generic_param_constraints_checked (image, token, generic_container, error))
1730 container = generic_container;
1733 if (cols [1] & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) {
1734 if (result->klass == mono_defaults.string_class && !strcmp (result->name, ".ctor"))
1735 result->string_ctor = 1;
1736 } else if (cols [2] & METHOD_ATTRIBUTE_PINVOKE_IMPL) {
1737 MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *)result;
1740 /* IJW is P/Invoke with a predefined function pointer. */
1741 if (image->is_module_handle && (cols [1] & METHOD_IMPL_ATTRIBUTE_NATIVE)) {
1742 piinfo->addr = mono_image_rva_map (image, cols [0]);
1743 g_assert (piinfo->addr);
1746 piinfo->implmap_idx = mono_metadata_implmap_from_method (image, idx - 1);
1747 /* Native methods can have no map. */
1748 if (piinfo->implmap_idx)
1749 piinfo->piflags = mono_metadata_decode_row_col (&tables [MONO_TABLE_IMPLMAP], piinfo->implmap_idx - 1, MONO_IMPLMAP_FLAGS);
1752 if (generic_container)
1753 mono_method_set_generic_container (result, generic_container);
1755 mono_loader_assert_no_error ();
1760 mono_get_method (MonoImage *image, guint32 token, MonoClass *klass)
1763 MonoMethod *result = mono_get_method_checked (image, token, klass, NULL, &error);
1764 mono_error_cleanup (&error);
1769 mono_get_method_full (MonoImage *image, guint32 token, MonoClass *klass,
1770 MonoGenericContext *context)
1773 MonoMethod *result = mono_get_method_checked (image, token, klass, context, &error);
1774 mono_error_cleanup (&error);
1779 mono_get_method_checked (MonoImage *image, guint32 token, MonoClass *klass, MonoGenericContext *context, MonoError *error)
1781 MonoMethod *result = NULL;
1782 gboolean used_context = FALSE;
1784 /* We do everything inside the lock to prevent creation races */
1786 mono_error_init (error);
1788 mono_image_lock (image);
1790 if (mono_metadata_token_table (token) == MONO_TABLE_METHOD) {
1791 if (!image->method_cache)
1792 image->method_cache = g_hash_table_new (NULL, NULL);
1793 result = (MonoMethod *)g_hash_table_lookup (image->method_cache, GINT_TO_POINTER (mono_metadata_token_index (token)));
1794 } else if (!image_is_dynamic (image)) {
1795 if (!image->methodref_cache)
1796 image->methodref_cache = g_hash_table_new (NULL, NULL);
1797 result = (MonoMethod *)g_hash_table_lookup (image->methodref_cache, GINT_TO_POINTER (token));
1799 mono_image_unlock (image);
1805 result = mono_get_method_from_token (image, token, klass, context, &used_context, error);
1809 mono_image_lock (image);
1810 if (!used_context && !result->is_inflated) {
1811 MonoMethod *result2 = NULL;
1813 if (mono_metadata_token_table (token) == MONO_TABLE_METHOD)
1814 result2 = (MonoMethod *)g_hash_table_lookup (image->method_cache, GINT_TO_POINTER (mono_metadata_token_index (token)));
1815 else if (!image_is_dynamic (image))
1816 result2 = (MonoMethod *)g_hash_table_lookup (image->methodref_cache, GINT_TO_POINTER (token));
1819 mono_image_unlock (image);
1823 if (mono_metadata_token_table (token) == MONO_TABLE_METHOD)
1824 g_hash_table_insert (image->method_cache, GINT_TO_POINTER (mono_metadata_token_index (token)), result);
1825 else if (!image_is_dynamic (image))
1826 g_hash_table_insert (image->methodref_cache, GINT_TO_POINTER (token), result);
1829 mono_image_unlock (image);
1835 get_method_constrained (MonoImage *image, MonoMethod *method, MonoClass *constrained_class, MonoGenericContext *context, MonoError *error)
1838 MonoClass *ic = NULL;
1839 MonoGenericContext *method_context = NULL;
1840 MonoMethodSignature *sig, *original_sig;
1842 mono_error_init (error);
1844 mono_class_init (constrained_class);
1845 original_sig = sig = mono_method_signature_checked (method, error);
1850 if (method->is_inflated && sig->generic_param_count) {
1851 MonoMethodInflated *imethod = (MonoMethodInflated *) method;
1852 sig = mono_method_signature_checked (imethod->declaring, error); /*We assume that if the inflated method signature is valid, the declaring method is too*/
1855 method_context = mono_method_get_context (method);
1859 * We must inflate the signature with the class instantiation to work on
1860 * cases where a class inherit from a generic type and the override replaces
1861 * any type argument which a concrete type. See #325283.
1863 if (method_context->class_inst) {
1864 MonoGenericContext ctx;
1865 ctx.method_inst = NULL;
1866 ctx.class_inst = method_context->class_inst;
1867 /*Fixme, property propagate this error*/
1868 sig = inflate_generic_signature_checked (method->klass->image, sig, &ctx, error);
1874 if ((constrained_class != method->klass) && (MONO_CLASS_IS_INTERFACE (method->klass)))
1877 result = find_method (constrained_class, ic, method->name, sig, constrained_class, error);
1878 if (sig != original_sig)
1879 mono_metadata_free_inflated_signature (sig);
1884 if (method_context) {
1885 result = mono_class_inflate_generic_method_checked (result, method_context, error);
1894 mono_get_method_constrained_with_method (MonoImage *image, MonoMethod *method, MonoClass *constrained_class,
1895 MonoGenericContext *context, MonoError *error)
1899 return get_method_constrained (image, method, constrained_class, context, error);
1903 * mono_get_method_constrained:
1905 * This is used when JITing the `constrained.' opcode.
1907 * This returns two values: the contrained method, which has been inflated
1908 * as the function return value; And the original CIL-stream method as
1909 * declared in cil_method. The later is used for verification.
1912 mono_get_method_constrained (MonoImage *image, guint32 token, MonoClass *constrained_class,
1913 MonoGenericContext *context, MonoMethod **cil_method)
1916 MonoMethod *result = mono_get_method_constrained_checked (image, token, constrained_class, context, cil_method, &error);
1917 mono_error_cleanup (&error);
1922 mono_get_method_constrained_checked (MonoImage *image, guint32 token, MonoClass *constrained_class, MonoGenericContext *context, MonoMethod **cil_method, MonoError *error)
1924 mono_error_init (error);
1926 *cil_method = mono_get_method_from_token (image, token, NULL, context, NULL, error);
1930 return get_method_constrained (image, *cil_method, constrained_class, context, error);
1934 mono_free_method (MonoMethod *method)
1936 if (mono_profiler_get_events () & MONO_PROFILE_METHOD_EVENTS)
1937 mono_profiler_method_free (method);
1939 /* FIXME: This hack will go away when the profiler will support freeing methods */
1940 if (mono_profiler_get_events () != MONO_PROFILE_NONE)
1943 if (method->signature) {
1945 * FIXME: This causes crashes because the types inside signatures and
1946 * locals are shared.
1948 /* mono_metadata_free_method_signature (method->signature); */
1949 /* g_free (method->signature); */
1952 if (method_is_dynamic (method)) {
1953 MonoMethodWrapper *mw = (MonoMethodWrapper*)method;
1956 mono_marshal_free_dynamic_wrappers (method);
1958 mono_image_property_remove (method->klass->image, method);
1960 g_free ((char*)method->name);
1962 g_free ((char*)mw->header->code);
1963 for (i = 0; i < mw->header->num_locals; ++i)
1964 g_free (mw->header->locals [i]);
1965 g_free (mw->header->clauses);
1966 g_free (mw->header);
1968 g_free (mw->method_data);
1969 g_free (method->signature);
1975 mono_method_get_param_names (MonoMethod *method, const char **names)
1979 MonoTableInfo *methodt;
1980 MonoTableInfo *paramt;
1981 MonoMethodSignature *signature;
1984 if (method->is_inflated)
1985 method = ((MonoMethodInflated *) method)->declaring;
1987 signature = mono_method_signature (method);
1988 /*FIXME this check is somewhat redundant since the caller usally will have to get the signature to figure out the
1989 number of arguments and allocate a properly sized array. */
1990 if (signature == NULL)
1993 if (!signature->param_count)
1996 for (i = 0; i < signature->param_count; ++i)
1999 klass = method->klass;
2003 mono_class_init (klass);
2005 if (image_is_dynamic (klass->image)) {
2006 MonoReflectionMethodAux *method_aux =
2007 (MonoReflectionMethodAux *)g_hash_table_lookup (
2008 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
2009 if (method_aux && method_aux->param_names) {
2010 for (i = 0; i < mono_method_signature (method)->param_count; ++i)
2011 if (method_aux->param_names [i + 1])
2012 names [i] = method_aux->param_names [i + 1];
2017 if (method->wrapper_type) {
2018 char **pnames = NULL;
2020 mono_image_lock (klass->image);
2021 if (klass->image->wrapper_param_names)
2022 pnames = (char **)g_hash_table_lookup (klass->image->wrapper_param_names, method);
2023 mono_image_unlock (klass->image);
2026 for (i = 0; i < signature->param_count; ++i)
2027 names [i] = pnames [i];
2032 methodt = &klass->image->tables [MONO_TABLE_METHOD];
2033 paramt = &klass->image->tables [MONO_TABLE_PARAM];
2034 idx = mono_method_get_index (method);
2036 guint32 cols [MONO_PARAM_SIZE];
2039 param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
2041 if (idx < methodt->rows)
2042 lastp = mono_metadata_decode_row_col (methodt, idx, MONO_METHOD_PARAMLIST);
2044 lastp = paramt->rows + 1;
2045 for (i = param_index; i < lastp; ++i) {
2046 mono_metadata_decode_row (paramt, i -1, cols, MONO_PARAM_SIZE);
2047 if (cols [MONO_PARAM_SEQUENCE] && cols [MONO_PARAM_SEQUENCE] <= signature->param_count) /* skip return param spec and bounds check*/
2048 names [cols [MONO_PARAM_SEQUENCE] - 1] = mono_metadata_string_heap (klass->image, cols [MONO_PARAM_NAME]);
2054 mono_method_get_param_token (MonoMethod *method, int index)
2056 MonoClass *klass = method->klass;
2057 MonoTableInfo *methodt;
2060 mono_class_init (klass);
2062 if (image_is_dynamic (klass->image))
2063 g_assert_not_reached ();
2065 methodt = &klass->image->tables [MONO_TABLE_METHOD];
2066 idx = mono_method_get_index (method);
2068 guint param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
2072 return mono_metadata_make_token (MONO_TABLE_PARAM, 0);
2074 return mono_metadata_make_token (MONO_TABLE_PARAM, param_index + index);
2081 mono_method_get_marshal_info (MonoMethod *method, MonoMarshalSpec **mspecs)
2084 MonoClass *klass = method->klass;
2085 MonoTableInfo *methodt;
2086 MonoTableInfo *paramt;
2087 MonoMethodSignature *signature;
2090 signature = mono_method_signature (method);
2091 g_assert (signature); /*FIXME there is no way to signal error from this function*/
2093 for (i = 0; i < signature->param_count + 1; ++i)
2096 if (image_is_dynamic (method->klass->image)) {
2097 MonoReflectionMethodAux *method_aux =
2098 (MonoReflectionMethodAux *)g_hash_table_lookup (
2099 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
2100 if (method_aux && method_aux->param_marshall) {
2101 MonoMarshalSpec **dyn_specs = method_aux->param_marshall;
2102 for (i = 0; i < signature->param_count + 1; ++i)
2103 if (dyn_specs [i]) {
2104 mspecs [i] = g_new0 (MonoMarshalSpec, 1);
2105 memcpy (mspecs [i], dyn_specs [i], sizeof (MonoMarshalSpec));
2106 mspecs [i]->data.custom_data.custom_name = g_strdup (dyn_specs [i]->data.custom_data.custom_name);
2107 mspecs [i]->data.custom_data.cookie = g_strdup (dyn_specs [i]->data.custom_data.cookie);
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 < 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 && cols [MONO_PARAM_SEQUENCE] <= signature->param_count) {
2132 tp = mono_metadata_get_marshal_info (klass->image, i - 1, FALSE);
2134 mspecs [cols [MONO_PARAM_SEQUENCE]]= mono_metadata_parse_marshal_spec (klass->image, tp);
2143 mono_method_has_marshal_info (MonoMethod *method)
2146 MonoClass *klass = method->klass;
2147 MonoTableInfo *methodt;
2148 MonoTableInfo *paramt;
2151 if (image_is_dynamic (method->klass->image)) {
2152 MonoReflectionMethodAux *method_aux =
2153 (MonoReflectionMethodAux *)g_hash_table_lookup (
2154 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
2155 MonoMarshalSpec **dyn_specs = method_aux->param_marshall;
2157 for (i = 0; i < mono_method_signature (method)->param_count + 1; ++i)
2164 mono_class_init (klass);
2166 methodt = &klass->image->tables [MONO_TABLE_METHOD];
2167 paramt = &klass->image->tables [MONO_TABLE_PARAM];
2168 idx = mono_method_get_index (method);
2170 guint32 cols [MONO_PARAM_SIZE];
2171 guint param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
2173 if (idx + 1 < methodt->rows)
2174 lastp = mono_metadata_decode_row_col (methodt, idx, MONO_METHOD_PARAMLIST);
2176 lastp = paramt->rows + 1;
2178 for (i = param_index; i < lastp; ++i) {
2179 mono_metadata_decode_row (paramt, i -1, cols, MONO_PARAM_SIZE);
2181 if (cols [MONO_PARAM_FLAGS] & PARAM_ATTRIBUTE_HAS_FIELD_MARSHAL)
2190 mono_method_get_wrapper_data (MonoMethod *method, guint32 id)
2193 g_assert (method != NULL);
2194 g_assert (method->wrapper_type != MONO_WRAPPER_NONE);
2196 if (method->is_inflated)
2197 method = ((MonoMethodInflated *) method)->declaring;
2198 data = (void **)((MonoMethodWrapper *)method)->method_data;
2199 g_assert (data != NULL);
2200 g_assert (id <= GPOINTER_TO_UINT (*data));
2207 } StackWalkUserData;
2210 stack_walk_adapter (MonoStackFrameInfo *frame, MonoContext *ctx, gpointer data)
2212 StackWalkUserData *d = (StackWalkUserData *)data;
2214 switch (frame->type) {
2215 case FRAME_TYPE_DEBUGGER_INVOKE:
2216 case FRAME_TYPE_MANAGED_TO_NATIVE:
2217 case FRAME_TYPE_TRAMPOLINE:
2219 case FRAME_TYPE_MANAGED:
2220 g_assert (frame->ji);
2221 return d->func (frame->actual_method, frame->native_offset, frame->il_offset, frame->managed, d->user_data);
2224 g_assert_not_reached ();
2230 mono_stack_walk (MonoStackWalk func, gpointer user_data)
2232 StackWalkUserData ud = { func, user_data };
2233 mono_get_eh_callbacks ()->mono_walk_stack_with_ctx (stack_walk_adapter, NULL, MONO_UNWIND_LOOKUP_ALL, &ud);
2237 mono_stack_walk_no_il (MonoStackWalk func, gpointer user_data)
2239 StackWalkUserData ud = { func, user_data };
2240 mono_get_eh_callbacks ()->mono_walk_stack_with_ctx (stack_walk_adapter, NULL, MONO_UNWIND_DEFAULT, &ud);
2244 MonoStackWalkAsyncSafe func;
2246 } AsyncStackWalkUserData;
2250 async_stack_walk_adapter (MonoStackFrameInfo *frame, MonoContext *ctx, gpointer data)
2252 AsyncStackWalkUserData *d = (AsyncStackWalkUserData *)data;
2254 switch (frame->type) {
2255 case FRAME_TYPE_DEBUGGER_INVOKE:
2256 case FRAME_TYPE_MANAGED_TO_NATIVE:
2257 case FRAME_TYPE_TRAMPOLINE:
2259 case FRAME_TYPE_MANAGED:
2262 if (frame->ji->async) {
2263 return d->func (NULL, frame->domain, frame->ji->code_start, frame->native_offset, d->user_data);
2265 return d->func (frame->actual_method, frame->domain, frame->ji->code_start, frame->native_offset, d->user_data);
2269 g_assert_not_reached ();
2276 * mono_stack_walk_async_safe:
2278 * Async safe version callable from signal handlers.
2281 mono_stack_walk_async_safe (MonoStackWalkAsyncSafe func, void *initial_sig_context, void *user_data)
2284 AsyncStackWalkUserData ud = { func, user_data };
2286 mono_sigctx_to_monoctx (initial_sig_context, &ctx);
2287 mono_get_eh_callbacks ()->mono_walk_stack_with_ctx (async_stack_walk_adapter, NULL, MONO_UNWIND_SIGNAL_SAFE, &ud);
2291 last_managed (MonoMethod *m, gint no, gint ilo, gboolean managed, gpointer data)
2293 MonoMethod **dest = (MonoMethod **)data;
2295 /*g_print ("In %s::%s [%d] [%d]\n", m->klass->name, m->name, no, ilo);*/
2301 mono_method_get_last_managed (void)
2303 MonoMethod *m = NULL;
2304 mono_stack_walk_no_il (last_managed, &m);
2308 static gboolean loader_lock_track_ownership = FALSE;
2313 * See docs/thread-safety.txt for the locking strategy.
2316 mono_loader_lock (void)
2318 mono_locks_coop_acquire (&loader_mutex, LoaderLock);
2319 if (G_UNLIKELY (loader_lock_track_ownership)) {
2320 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));
2325 mono_loader_unlock (void)
2327 mono_locks_coop_release (&loader_mutex, LoaderLock);
2328 if (G_UNLIKELY (loader_lock_track_ownership)) {
2329 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));
2334 * mono_loader_lock_track_ownership:
2336 * Set whenever the runtime should track ownership of the loader lock. If set to TRUE,
2337 * the mono_loader_lock_is_owned_by_self () can be called to query whenever the current
2338 * thread owns the loader lock.
2341 mono_loader_lock_track_ownership (gboolean track)
2343 loader_lock_track_ownership = track;
2347 * mono_loader_lock_is_owned_by_self:
2349 * Return whenever the current thread owns the loader lock.
2350 * This is useful to avoid blocking operations while holding the loader lock.
2353 mono_loader_lock_is_owned_by_self (void)
2355 g_assert (loader_lock_track_ownership);
2357 return GPOINTER_TO_UINT (mono_native_tls_get_value (loader_lock_nest_id)) > 0;
2361 * mono_loader_lock_if_inited:
2363 * Acquire the loader lock if it has been initialized, no-op otherwise. This can
2364 * be used in runtime initialization code which can be executed before mono_loader_init ().
2367 mono_loader_lock_if_inited (void)
2369 if (loader_lock_inited)
2370 mono_loader_lock ();
2374 mono_loader_unlock_if_inited (void)
2376 if (loader_lock_inited)
2377 mono_loader_unlock ();
2381 * mono_method_signature:
2383 * Return the signature of the method M. On failure, returns NULL, and ERR is set.
2385 MonoMethodSignature*
2386 mono_method_signature_checked (MonoMethod *m, MonoError *error)
2391 gboolean can_cache_signature;
2392 MonoGenericContainer *container;
2393 MonoMethodSignature *signature = NULL, *sig2;
2396 /* We need memory barriers below because of the double-checked locking pattern */
2398 mono_error_init (error);
2401 return m->signature;
2403 img = m->klass->image;
2405 if (m->is_inflated) {
2406 MonoMethodInflated *imethod = (MonoMethodInflated *) m;
2407 /* the lock is recursive */
2408 signature = mono_method_signature (imethod->declaring);
2409 signature = inflate_generic_signature_checked (imethod->declaring->klass->image, signature, mono_method_get_context (m), error);
2410 if (!mono_error_ok (error))
2413 inflated_signatures_size += mono_metadata_signature_size (signature);
2415 mono_image_lock (img);
2417 mono_memory_barrier ();
2419 m->signature = signature;
2421 mono_image_unlock (img);
2423 return m->signature;
2426 g_assert (mono_metadata_token_table (m->token) == MONO_TABLE_METHOD);
2427 idx = mono_metadata_token_index (m->token);
2429 sig = mono_metadata_blob_heap (img, sig_offset = mono_metadata_decode_row_col (&img->tables [MONO_TABLE_METHOD], idx - 1, MONO_METHOD_SIGNATURE));
2431 g_assert (!m->klass->generic_class);
2432 container = mono_method_get_generic_container (m);
2434 container = m->klass->generic_container;
2436 /* Generic signatures depend on the container so they cannot be cached */
2437 /* icall/pinvoke signatures cannot be cached cause we modify them below */
2438 can_cache_signature = !(m->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && !(m->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) && !container;
2440 /* If the method has parameter attributes, that can modify the signature */
2441 if (mono_metadata_method_has_param_attrs (img, idx))
2442 can_cache_signature = FALSE;
2444 if (can_cache_signature) {
2445 mono_image_lock (img);
2446 signature = (MonoMethodSignature *)g_hash_table_lookup (img->method_signatures, sig);
2447 mono_image_unlock (img);
2451 const char *sig_body;
2452 /*TODO we should cache the failure result somewhere*/
2453 if (!mono_verifier_verify_method_signature (img, sig_offset, error))
2456 /* size = */ mono_metadata_decode_blob_size (sig, &sig_body);
2458 signature = mono_metadata_parse_method_signature_full (img, container, idx, sig_body, NULL, error);
2462 if (can_cache_signature) {
2463 mono_image_lock (img);
2464 sig2 = (MonoMethodSignature *)g_hash_table_lookup (img->method_signatures, sig);
2466 g_hash_table_insert (img->method_signatures, (gpointer)sig, signature);
2467 mono_image_unlock (img);
2470 signatures_size += mono_metadata_signature_size (signature);
2473 /* Verify metadata consistency */
2474 if (signature->generic_param_count) {
2475 if (!container || !container->is_method) {
2476 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);
2479 if (container->type_argc != signature->generic_param_count) {
2480 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);
2483 } else if (container && container->is_method && container->type_argc) {
2484 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);
2487 if (m->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL)
2488 signature->pinvoke = 1;
2489 else if (m->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) {
2490 MonoCallConvention conv = (MonoCallConvention)0;
2491 MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *)m;
2492 signature->pinvoke = 1;
2494 switch (piinfo->piflags & PINVOKE_ATTRIBUTE_CALL_CONV_MASK) {
2495 case 0: /* no call conv, so using default */
2496 case PINVOKE_ATTRIBUTE_CALL_CONV_WINAPI:
2497 conv = MONO_CALL_DEFAULT;
2499 case PINVOKE_ATTRIBUTE_CALL_CONV_CDECL:
2502 case PINVOKE_ATTRIBUTE_CALL_CONV_STDCALL:
2503 conv = MONO_CALL_STDCALL;
2505 case PINVOKE_ATTRIBUTE_CALL_CONV_THISCALL:
2506 conv = MONO_CALL_THISCALL;
2508 case PINVOKE_ATTRIBUTE_CALL_CONV_FASTCALL:
2509 conv = MONO_CALL_FASTCALL;
2511 case PINVOKE_ATTRIBUTE_CALL_CONV_GENERIC:
2512 case PINVOKE_ATTRIBUTE_CALL_CONV_GENERICINST:
2514 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);
2517 signature->call_convention = conv;
2520 mono_image_lock (img);
2522 mono_memory_barrier ();
2524 m->signature = signature;
2526 mono_image_unlock (img);
2528 return m->signature;
2532 * mono_method_signature:
2534 * Return the signature of the method M. On failure, returns NULL.
2536 MonoMethodSignature*
2537 mono_method_signature (MonoMethod *m)
2540 MonoMethodSignature *sig;
2542 sig = mono_method_signature_checked (m, &error);
2544 char *type_name = mono_type_get_full_name (m->klass);
2545 g_warning ("Could not load signature of %s:%s due to: %s", type_name, m->name, mono_error_get_message (&error));
2547 mono_error_cleanup (&error);
2554 mono_method_get_name (MonoMethod *method)
2556 return method->name;
2560 mono_method_get_class (MonoMethod *method)
2562 return method->klass;
2566 mono_method_get_token (MonoMethod *method)
2568 return method->token;
2572 mono_method_get_header_checked (MonoMethod *method, MonoError *error)
2578 MonoGenericContainer *container;
2580 mono_error_init (error);
2581 img = method->klass->image;
2583 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)) {
2584 mono_error_set_bad_image (error, img, "Method has no body");
2588 if (method->is_inflated) {
2589 MonoMethodInflated *imethod = (MonoMethodInflated *) method;
2590 MonoMethodHeader *header, *iheader;
2592 header = mono_method_get_header_checked (imethod->declaring, error);
2596 iheader = inflate_generic_header (header, mono_method_get_context (method), error);
2597 mono_metadata_free_mh (header);
2605 if (method->wrapper_type != MONO_WRAPPER_NONE || method->sre_method) {
2606 MonoMethodWrapper *mw = (MonoMethodWrapper *)method;
2607 g_assert (mw->header);
2612 * We don't need locks here: the new header is allocated from malloc memory
2613 * and is not stored anywhere in the runtime, the user needs to free it.
2615 g_assert (mono_metadata_token_table (method->token) == MONO_TABLE_METHOD);
2616 idx = mono_metadata_token_index (method->token);
2617 rva = mono_metadata_decode_row_col (&img->tables [MONO_TABLE_METHOD], idx - 1, MONO_METHOD_RVA);
2619 if (!mono_verifier_verify_method_header (img, rva, NULL)) {
2620 mono_error_set_bad_image (error, img, "Invalid method header, failed verification");
2624 loc = mono_image_rva_map (img, rva);
2626 mono_error_set_bad_image (error, img, "Method has zero rva");
2631 * When parsing the types of local variables, we must pass any container available
2632 * to ensure that both VAR and MVAR will get the right owner.
2634 container = mono_method_get_generic_container (method);
2636 container = method->klass->generic_container;
2637 return mono_metadata_parse_mh_full (img, container, (const char *)loc, error);
2641 mono_method_get_header (MonoMethod *method)
2644 MonoMethodHeader *header = mono_method_get_header_checked (method, &error);
2645 mono_error_cleanup (&error);
2651 mono_method_get_flags (MonoMethod *method, guint32 *iflags)
2654 *iflags = method->iflags;
2655 return method->flags;
2659 * Find the method index in the metadata methodDef table.
2662 mono_method_get_index (MonoMethod *method)
2664 MonoClass *klass = method->klass;
2668 /* constructed array methods are not in the MethodDef table */
2672 return mono_metadata_token_index (method->token);
2674 mono_class_setup_methods (klass);
2675 if (mono_class_has_failure (klass))
2677 for (i = 0; i < klass->method.count; ++i) {
2678 if (method == klass->methods [i]) {
2679 if (klass->image->uncompressed_metadata)
2680 return mono_metadata_translate_token_index (klass->image, MONO_TABLE_METHOD, klass->method.first + i + 1);
2682 return klass->method.first + i + 1;