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.
26 #include <mono/metadata/metadata.h>
27 #include <mono/metadata/image.h>
28 #include <mono/metadata/assembly.h>
29 #include <mono/metadata/tokentype.h>
30 #include <mono/metadata/tabledefs.h>
31 #include <mono/metadata/metadata-internals.h>
32 #include <mono/metadata/loader.h>
33 #include <mono/metadata/class-internals.h>
34 #include <mono/metadata/debug-helpers.h>
35 #include <mono/metadata/reflection.h>
36 #include <mono/metadata/profiler.h>
37 #include <mono/metadata/profiler-private.h>
38 #include <mono/metadata/exception.h>
39 #include <mono/metadata/marshal.h>
40 #include <mono/metadata/lock-tracer.h>
41 #include <mono/metadata/verify-internals.h>
42 #include <mono/utils/mono-logger-internal.h>
43 #include <mono/utils/mono-dl.h>
44 #include <mono/utils/mono-membar.h>
45 #include <mono/utils/mono-counters.h>
46 #include <mono/utils/mono-error-internals.h>
47 #include <mono/utils/mono-tls.h>
49 MonoDefaults mono_defaults;
52 * This lock protects the hash tables inside MonoImage used by the metadata
53 * loading functions in class.c and loader.c.
55 * See domain-internals.h for locking policy in combination with the
58 static CRITICAL_SECTION loader_mutex;
59 static gboolean loader_lock_inited;
62 static guint32 inflated_signatures_size;
63 static guint32 memberref_sig_cache_size;
64 static guint32 methods_size;
65 static guint32 signatures_size;
68 * This TLS variable contains the last type load error encountered by the loader.
70 MonoNativeTlsKey loader_error_thread_id;
73 * This TLS variable holds how many times the current thread has acquired the loader
76 MonoNativeTlsKey loader_lock_nest_id;
78 static void dllmap_cleanup (void);
83 static gboolean inited;
86 InitializeCriticalSection (&loader_mutex);
87 loader_lock_inited = TRUE;
89 mono_native_tls_alloc (&loader_error_thread_id, NULL);
90 mono_native_tls_alloc (&loader_lock_nest_id, NULL);
92 mono_counters_register ("Inflated signatures size",
93 MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &inflated_signatures_size);
94 mono_counters_register ("Memberref signature cache size",
95 MONO_COUNTER_METADATA | MONO_COUNTER_INT, &memberref_sig_cache_size);
96 mono_counters_register ("MonoMethod size",
97 MONO_COUNTER_METADATA | MONO_COUNTER_INT, &methods_size);
98 mono_counters_register ("MonoMethodSignature size",
99 MONO_COUNTER_METADATA | MONO_COUNTER_INT, &signatures_size);
106 mono_loader_cleanup (void)
110 mono_native_tls_free (loader_error_thread_id);
111 mono_native_tls_free (loader_lock_nest_id);
113 DeleteCriticalSection (&loader_mutex);
114 loader_lock_inited = FALSE;
118 * Handling of type load errors should be done as follows:
120 * If something could not be loaded, the loader should call one of the
121 * mono_loader_set_error_XXX functions ()
122 * with the appropriate arguments, then return NULL to report the failure. The error
123 * should be propagated until it reaches code which can throw managed exceptions. At that
124 * point, an exception should be thrown based on the information returned by
125 * mono_loader_get_last_error (). Then the error should be cleared by calling
126 * mono_loader_clear_error ().
130 set_loader_error (MonoLoaderError *error)
132 mono_native_tls_set_value (loader_error_thread_id, error);
136 * mono_loader_set_error_assembly_load:
138 * Set the loader error for this thread.
141 mono_loader_set_error_assembly_load (const char *assembly_name, gboolean ref_only)
143 MonoLoaderError *error;
145 if (mono_loader_get_last_error ())
148 error = g_new0 (MonoLoaderError, 1);
149 error->exception_type = MONO_EXCEPTION_FILE_NOT_FOUND;
150 error->assembly_name = g_strdup (assembly_name);
151 error->ref_only = ref_only;
154 * This is not strictly needed, but some (most) of the loader code still
155 * can't deal with load errors, and this message is more helpful than an
159 mono_trace (G_LOG_LEVEL_WARNING, MONO_TRACE_ASSEMBLY, "Cannot resolve dependency to assembly '%s' because it has not been preloaded. When using the ReflectionOnly APIs, dependent assemblies must be pre-loaded or loaded on demand through the ReflectionOnlyAssemblyResolve event.", assembly_name);
161 mono_trace (G_LOG_LEVEL_WARNING, MONO_TRACE_ASSEMBLY, "Could not load file or assembly '%s' or one of its dependencies.", assembly_name);
163 set_loader_error (error);
167 * mono_loader_set_error_type_load:
169 * Set the loader error for this thread.
172 mono_loader_set_error_type_load (const char *class_name, const char *assembly_name)
174 MonoLoaderError *error;
176 if (mono_loader_get_last_error ())
179 error = g_new0 (MonoLoaderError, 1);
180 error->exception_type = MONO_EXCEPTION_TYPE_LOAD;
181 error->class_name = g_strdup (class_name);
182 error->assembly_name = g_strdup (assembly_name);
185 * This is not strictly needed, but some (most) of the loader code still
186 * can't deal with load errors, and this message is more helpful than an
189 mono_trace_warning (MONO_TRACE_TYPE, "The class %s could not be loaded, used in %s", class_name, assembly_name);
191 set_loader_error (error);
195 * mono_loader_set_error_method_load:
197 * Set the loader error for this thread. MEMBER_NAME should point to a string
201 mono_loader_set_error_method_load (const char *class_name, const char *member_name)
203 MonoLoaderError *error;
205 /* FIXME: Store the signature as well */
206 if (mono_loader_get_last_error ())
209 error = g_new0 (MonoLoaderError, 1);
210 error->exception_type = MONO_EXCEPTION_MISSING_METHOD;
211 error->class_name = g_strdup (class_name);
212 error->member_name = member_name;
214 set_loader_error (error);
218 * mono_loader_set_error_field_load:
220 * Set the loader error for this thread. MEMBER_NAME should point to a string
224 mono_loader_set_error_field_load (MonoClass *klass, const char *member_name)
226 MonoLoaderError *error;
228 /* FIXME: Store the signature as well */
229 if (mono_loader_get_last_error ())
232 error = g_new0 (MonoLoaderError, 1);
233 error->exception_type = MONO_EXCEPTION_MISSING_FIELD;
234 error->klass = klass;
235 error->member_name = member_name;
237 set_loader_error (error);
241 * mono_loader_set_error_bad_image:
243 * Set the loader error for this thread.
246 mono_loader_set_error_bad_image (char *msg)
248 MonoLoaderError *error;
250 if (mono_loader_get_last_error ())
253 error = g_new0 (MonoLoaderError, 1);
254 error->exception_type = MONO_EXCEPTION_BAD_IMAGE;
257 set_loader_error (error);
262 * mono_loader_get_last_error:
264 * Returns information about the last type load exception encountered by the loader, or
265 * NULL. After use, the exception should be cleared by calling mono_loader_clear_error.
268 mono_loader_get_last_error (void)
270 return (MonoLoaderError*)mono_native_tls_get_value (loader_error_thread_id);
274 * mono_loader_clear_error:
276 * Disposes any loader error messages on this thread
279 mono_loader_clear_error (void)
281 MonoLoaderError *ex = (MonoLoaderError*)mono_native_tls_get_value (loader_error_thread_id);
284 g_free (ex->class_name);
285 g_free (ex->assembly_name);
289 mono_native_tls_set_value (loader_error_thread_id, NULL);
294 * mono_loader_error_prepare_exception:
295 * @error: The MonoLoaderError to turn into an exception
297 * This turns a MonoLoaderError into an exception that can be thrown
298 * and resets the Mono Loader Error state during this process.
302 mono_loader_error_prepare_exception (MonoLoaderError *error)
304 MonoException *ex = NULL;
306 switch (error->exception_type) {
307 case MONO_EXCEPTION_TYPE_LOAD: {
308 char *cname = g_strdup (error->class_name);
309 char *aname = g_strdup (error->assembly_name);
310 MonoString *class_name;
312 mono_loader_clear_error ();
314 class_name = mono_string_new (mono_domain_get (), cname);
316 ex = mono_get_exception_type_load (class_name, aname);
321 case MONO_EXCEPTION_MISSING_METHOD: {
322 char *cname = g_strdup (error->class_name);
323 char *aname = g_strdup (error->member_name);
325 mono_loader_clear_error ();
326 ex = mono_get_exception_missing_method (cname, aname);
332 case MONO_EXCEPTION_MISSING_FIELD: {
334 char *cmembername = g_strdup (error->member_name);
336 class_name = mono_type_get_full_name (error->klass);
338 class_name = g_strdup ("");
340 mono_loader_clear_error ();
342 ex = mono_get_exception_missing_field (class_name, cmembername);
344 g_free (cmembername);
348 case MONO_EXCEPTION_FILE_NOT_FOUND: {
353 msg = g_strdup_printf ("Cannot resolve dependency to assembly '%s' because it has not been preloaded. When using the ReflectionOnly APIs, dependent assemblies must be pre-loaded or loaded on demand through the ReflectionOnlyAssemblyResolve event.", error->assembly_name);
355 msg = g_strdup_printf ("Could not load file or assembly '%s' or one of its dependencies.", error->assembly_name);
356 filename = g_strdup (error->assembly_name);
357 /* Has to call this before calling anything which might call mono_class_init () */
358 mono_loader_clear_error ();
359 ex = mono_get_exception_file_not_found2 (msg, mono_string_new (mono_domain_get (), filename));
365 case MONO_EXCEPTION_BAD_IMAGE: {
366 char *msg = g_strdup (error->msg);
367 mono_loader_clear_error ();
368 ex = mono_get_exception_bad_image_format (msg);
374 g_assert_not_reached ();
381 * find_cached_memberref_sig:
383 * Return a cached copy of the memberref signature identified by SIG_IDX.
384 * We use a gpointer since the cache stores both MonoTypes and MonoMethodSignatures.
385 * A cache is needed since the type/signature parsing routines allocate everything
386 * from a mempool, so without a cache, multiple requests for the same signature would
387 * lead to unbounded memory growth. For normal methods/fields this is not a problem
388 * since the resulting methods/fields are cached, but inflated methods/fields cannot
390 * LOCKING: Acquires the loader lock.
393 find_cached_memberref_sig (MonoImage *image, guint32 sig_idx)
398 res = g_hash_table_lookup (image->memberref_signatures, GUINT_TO_POINTER (sig_idx));
399 mono_loader_unlock ();
405 cache_memberref_sig (MonoImage *image, guint32 sig_idx, gpointer sig)
410 prev_sig = g_hash_table_lookup (image->memberref_signatures, GUINT_TO_POINTER (sig_idx));
412 /* Somebody got in before us */
416 g_hash_table_insert (image->memberref_signatures, GUINT_TO_POINTER (sig_idx), sig);
417 /* An approximation based on glib 2.18 */
418 memberref_sig_cache_size += sizeof (gpointer) * 4;
421 mono_loader_unlock ();
426 static MonoClassField*
427 field_from_memberref (MonoImage *image, guint32 token, MonoClass **retklass,
428 MonoGenericContext *context)
431 MonoClassField *field;
432 MonoTableInfo *tables = image->tables;
435 guint32 nindex, class, class_table;
438 guint32 idx = mono_metadata_token_index (token);
440 mono_metadata_decode_row (&tables [MONO_TABLE_MEMBERREF], idx-1, cols, MONO_MEMBERREF_SIZE);
441 nindex = cols [MONO_MEMBERREF_CLASS] >> MONO_MEMBERREF_PARENT_BITS;
442 class = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
444 fname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
446 if (!mono_verifier_verify_memberref_field_signature (image, cols [MONO_MEMBERREF_SIGNATURE], NULL)) {
447 mono_loader_set_error_bad_image (g_strdup_printf ("Bad field signature class token 0x%08x field name %s token 0x%08x on image %s", class, fname, token, image->name));
452 case MONO_MEMBERREF_PARENT_TYPEDEF:
453 class_table = MONO_TOKEN_TYPE_DEF;
454 klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF | nindex);
456 case MONO_MEMBERREF_PARENT_TYPEREF:
457 class_table = MONO_TOKEN_TYPE_REF;
458 klass = mono_class_from_typeref (image, MONO_TOKEN_TYPE_REF | nindex);
460 case MONO_MEMBERREF_PARENT_TYPESPEC:
461 class_table = MONO_TOKEN_TYPE_SPEC;
462 klass = mono_class_get_full (image, MONO_TOKEN_TYPE_SPEC | nindex, context);
465 /*FIXME this must set a loader error!*/
466 g_warning ("field load from %x", class);
471 char *name = mono_class_name_from_token (image, class_table | nindex);
472 g_warning ("Missing field %s in class %s (type token %d)", fname, name, class_table | nindex);
473 mono_loader_set_error_type_load (name, image->assembly_name);
478 ptr = mono_metadata_blob_heap (image, cols [MONO_MEMBERREF_SIGNATURE]);
479 mono_metadata_decode_blob_size (ptr, &ptr);
480 /* we may want to check the signature here... */
483 g_warning ("Bad field signature class token %08x field name %s token %08x", class, fname, token);
484 mono_loader_set_error_field_load (klass, fname);
487 /* FIXME: This needs a cache, especially for generic instances, since
488 * mono_metadata_parse_type () allocates everything from a mempool.
490 sig_type = find_cached_memberref_sig (image, cols [MONO_MEMBERREF_SIGNATURE]);
492 sig_type = mono_metadata_parse_type (image, MONO_PARSE_TYPE, 0, ptr, &ptr);
493 if (sig_type == NULL) {
494 mono_loader_set_error_field_load (klass, fname);
497 sig_type = cache_memberref_sig (image, cols [MONO_MEMBERREF_SIGNATURE], sig_type);
500 mono_class_init (klass); /*FIXME is this really necessary?*/
503 field = mono_class_get_field_from_name_full (klass, fname, sig_type);
506 mono_loader_set_error_field_load (klass, fname);
512 mono_field_from_token (MonoImage *image, guint32 token, MonoClass **retklass,
513 MonoGenericContext *context)
517 MonoClassField *field;
519 if (image->dynamic) {
520 MonoClassField *result;
521 MonoClass *handle_class;
524 result = mono_lookup_dynamic_token_class (image, token, TRUE, &handle_class, context);
525 // This checks the memberref type as well
526 if (!result || handle_class != mono_defaults.fieldhandle_class) {
527 mono_loader_set_error_bad_image (g_strdup_printf ("Bad field token 0x%08x on image %s.", token, image->name));
530 *retklass = result->parent;
535 if ((field = g_hash_table_lookup (image->field_cache, GUINT_TO_POINTER (token)))) {
536 *retklass = field->parent;
537 mono_loader_unlock ();
540 mono_loader_unlock ();
542 if (mono_metadata_token_table (token) == MONO_TABLE_MEMBERREF)
543 field = field_from_memberref (image, token, retklass, context);
545 type = mono_metadata_typedef_from_field (image, mono_metadata_token_index (token));
548 k = mono_class_get (image, MONO_TOKEN_TYPE_DEF | type);
554 field = mono_class_get_field (k, token);
558 if (field && field->parent && !field->parent->generic_class && !field->parent->generic_container)
559 g_hash_table_insert (image->field_cache, GUINT_TO_POINTER (token), field);
560 mono_loader_unlock ();
565 mono_metadata_signature_vararg_match (MonoMethodSignature *sig1, MonoMethodSignature *sig2)
569 if (sig1->hasthis != sig2->hasthis ||
570 sig1->sentinelpos != sig2->sentinelpos)
573 for (i = 0; i < sig1->sentinelpos; i++) {
574 MonoType *p1 = sig1->params[i];
575 MonoType *p2 = sig2->params[i];
577 /*if (p1->attrs != p2->attrs)
580 if (!mono_metadata_type_equal (p1, p2))
584 if (!mono_metadata_type_equal (sig1->ret, sig2->ret))
590 find_method_in_class (MonoClass *klass, const char *name, const char *qname, const char *fqname,
591 MonoMethodSignature *sig, MonoClass *from_class)
595 /* Search directly in the metadata to avoid calling setup_methods () */
597 /* FIXME: !from_class->generic_class condition causes test failures. */
598 if (klass->type_token && !klass->image->dynamic && !klass->methods && !klass->rank && klass == from_class && !from_class->generic_class) {
599 for (i = 0; i < klass->method.count; ++i) {
600 guint32 cols [MONO_METHOD_SIZE];
603 MonoMethodSignature *other_sig;
605 mono_metadata_decode_table_row (klass->image, MONO_TABLE_METHOD, klass->method.first + i, cols, MONO_METHOD_SIZE);
607 m_name = mono_metadata_string_heap (klass->image, cols [MONO_METHOD_NAME]);
609 if (!((fqname && !strcmp (m_name, fqname)) ||
610 (qname && !strcmp (m_name, qname)) ||
611 (name && !strcmp (m_name, name))))
614 method = mono_get_method (klass->image, MONO_TOKEN_METHOD_DEF | (klass->method.first + i + 1), klass);
616 other_sig = mono_method_signature (method);
617 if (other_sig && (sig->call_convention != MONO_CALL_VARARG) && mono_metadata_signature_equal (sig, other_sig))
623 mono_class_setup_methods (klass);
625 We can't fail lookup of methods otherwise the runtime will fail with MissingMethodException instead of TypeLoadException.
626 See mono/tests/generic-type-load-exception.2.il
627 FIXME we should better report this error to the caller
631 for (i = 0; i < klass->method.count; ++i) {
632 MonoMethod *m = klass->methods [i];
633 MonoMethodSignature *msig;
635 /* We must cope with failing to load some of the types. */
639 if (!((fqname && !strcmp (m->name, fqname)) ||
640 (qname && !strcmp (m->name, qname)) ||
641 (name && !strcmp (m->name, name))))
643 msig = mono_method_signature (m);
647 if (sig->call_convention == MONO_CALL_VARARG) {
648 if (mono_metadata_signature_vararg_match (sig, msig))
651 if (mono_metadata_signature_equal (sig, msig))
656 if (i < klass->method.count)
657 return mono_class_get_method_by_index (from_class, i);
662 find_method (MonoClass *in_class, MonoClass *ic, const char* name, MonoMethodSignature *sig, MonoClass *from_class)
665 char *qname, *fqname, *class_name;
666 gboolean is_interface;
667 MonoMethod *result = NULL;
669 is_interface = MONO_CLASS_IS_INTERFACE (in_class);
672 class_name = mono_type_get_name_full (&ic->byval_arg, MONO_TYPE_NAME_FORMAT_IL);
674 qname = g_strconcat (class_name, ".", name, NULL);
675 if (ic->name_space && ic->name_space [0])
676 fqname = g_strconcat (ic->name_space, ".", class_name, ".", name, NULL);
680 class_name = qname = fqname = NULL;
683 g_assert (from_class);
684 result = find_method_in_class (in_class, name, qname, fqname, sig, from_class);
688 if (name [0] == '.' && (!strcmp (name, ".ctor") || !strcmp (name, ".cctor")))
692 * This happens when we fail to lazily load the interfaces of one of the types.
693 * On such case we can't just bail out since user code depends on us trying harder.
695 if (from_class->interface_offsets_count != in_class->interface_offsets_count) {
696 in_class = in_class->parent;
697 from_class = from_class->parent;
701 for (i = 0; i < in_class->interface_offsets_count; i++) {
702 MonoClass *in_ic = in_class->interfaces_packed [i];
703 MonoClass *from_ic = from_class->interfaces_packed [i];
704 char *ic_qname, *ic_fqname, *ic_class_name;
706 ic_class_name = mono_type_get_name_full (&in_ic->byval_arg, MONO_TYPE_NAME_FORMAT_IL);
707 ic_qname = g_strconcat (ic_class_name, ".", name, NULL);
708 if (in_ic->name_space && in_ic->name_space [0])
709 ic_fqname = g_strconcat (in_ic->name_space, ".", ic_class_name, ".", name, NULL);
713 result = find_method_in_class (in_ic, ic ? name : NULL, ic_qname, ic_fqname, sig, from_ic);
714 g_free (ic_class_name);
721 in_class = in_class->parent;
722 from_class = from_class->parent;
724 g_assert (!in_class == !from_class);
727 result = find_method_in_class (mono_defaults.object_class, name, qname, fqname, sig, mono_defaults.object_class);
736 static MonoMethodSignature*
737 inflate_generic_signature_checked (MonoImage *image, MonoMethodSignature *sig, MonoGenericContext *context, MonoError *error)
739 MonoMethodSignature *res;
743 mono_error_init (error);
747 res = g_malloc0 (MONO_SIZEOF_METHOD_SIGNATURE + ((gint32)sig->param_count) * sizeof (MonoType*));
748 res->param_count = sig->param_count;
749 res->sentinelpos = -1;
750 res->ret = mono_class_inflate_generic_type_checked (sig->ret, context, error);
751 if (!mono_error_ok (error))
753 is_open = mono_class_is_open_constructed_type (res->ret);
754 for (i = 0; i < sig->param_count; ++i) {
755 res->params [i] = mono_class_inflate_generic_type_checked (sig->params [i], context, error);
756 if (!mono_error_ok (error))
760 is_open = mono_class_is_open_constructed_type (res->params [i]);
762 res->hasthis = sig->hasthis;
763 res->explicit_this = sig->explicit_this;
764 res->call_convention = sig->call_convention;
765 res->pinvoke = sig->pinvoke;
766 res->generic_param_count = sig->generic_param_count;
767 res->sentinelpos = sig->sentinelpos;
768 res->has_type_parameters = is_open;
769 res->is_inflated = 1;
774 mono_metadata_free_type (res->ret);
775 for (i = 0; i < sig->param_count; ++i) {
777 mono_metadata_free_type (res->params [i]);
783 static MonoMethodHeader*
784 inflate_generic_header (MonoMethodHeader *header, MonoGenericContext *context)
786 MonoMethodHeader *res;
788 res = g_malloc0 (MONO_SIZEOF_METHOD_HEADER + sizeof (gpointer) * header->num_locals);
789 res->code = header->code;
790 res->code_size = header->code_size;
791 res->max_stack = header->max_stack;
792 res->num_clauses = header->num_clauses;
793 res->init_locals = header->init_locals;
794 res->num_locals = header->num_locals;
795 res->clauses = header->clauses;
796 for (i = 0; i < header->num_locals; ++i)
797 res->locals [i] = mono_class_inflate_generic_type (header->locals [i], context);
798 if (res->num_clauses) {
799 res->clauses = g_memdup (header->clauses, sizeof (MonoExceptionClause) * res->num_clauses);
800 for (i = 0; i < header->num_clauses; ++i) {
801 MonoExceptionClause *clause = &res->clauses [i];
802 if (clause->flags != MONO_EXCEPTION_CLAUSE_NONE)
804 clause->data.catch_class = mono_class_inflate_generic_class (clause->data.catch_class, context);
811 * token is the method_ref/def/spec token used in a call IL instruction.
814 mono_method_get_signature_full (MonoMethod *method, MonoImage *image, guint32 token, MonoGenericContext *context)
816 int table = mono_metadata_token_table (token);
817 int idx = mono_metadata_token_index (token);
819 guint32 cols [MONO_MEMBERREF_SIZE];
820 MonoMethodSignature *sig;
823 /* !table is for wrappers: we should really assign their own token to them */
824 if (!table || table == MONO_TABLE_METHOD)
825 return mono_method_signature (method);
827 if (table == MONO_TABLE_METHODSPEC) {
828 /* the verifier (do_invoke_method) will turn the NULL into a verifier error */
829 if ((method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) || !method->is_inflated)
832 return mono_method_signature (method);
835 if (method->klass->generic_class)
836 return mono_method_signature (method);
838 #ifndef DISABLE_REFLECTION_EMIT
839 if (image->dynamic) {
840 sig = mono_reflection_lookup_signature (image, method, token);
843 mono_metadata_decode_row (&image->tables [MONO_TABLE_MEMBERREF], idx-1, cols, MONO_MEMBERREF_SIZE);
844 sig_idx = cols [MONO_MEMBERREF_SIGNATURE];
846 sig = find_cached_memberref_sig (image, sig_idx);
848 if (!mono_verifier_verify_memberref_method_signature (image, sig_idx, NULL)) {
849 guint32 class = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
850 const char *fname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
852 mono_loader_set_error_bad_image (g_strdup_printf ("Bad method signature class token 0x%08x field name %s token 0x%08x on image %s", class, fname, token, image->name));
856 ptr = mono_metadata_blob_heap (image, sig_idx);
857 mono_metadata_decode_blob_size (ptr, &ptr);
858 sig = mono_metadata_parse_method_signature (image, 0, ptr, NULL);
861 sig = cache_memberref_sig (image, sig_idx, sig);
863 /* FIXME: we probably should verify signature compat in the dynamic case too*/
864 if (!mono_verifier_is_sig_compatible (image, method, sig)) {
865 guint32 class = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
866 const char *fname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
868 mono_loader_set_error_bad_image (g_strdup_printf ("Incompatible method signature class token 0x%08x field name %s token 0x%08x on image %s", class, fname, token, image->name));
871 #ifndef DISABLE_REFLECTION_EMIT
878 MonoMethodSignature *cached;
880 /* This signature is not owned by a MonoMethod, so need to cache */
881 sig = inflate_generic_signature_checked (image, sig, context, &error);
882 if (!mono_error_ok (&error)) {/*XXX bubble up this and kill one use of loader errors */
883 mono_loader_set_error_bad_image (g_strdup_printf ("Could not inflate signature %s", mono_error_get_message (&error)));
884 mono_error_cleanup (&error);
888 cached = mono_metadata_get_inflated_signature (sig, context);
890 mono_metadata_free_inflated_signature (sig);
892 inflated_signatures_size += mono_metadata_signature_size (cached);
900 mono_method_get_signature (MonoMethod *method, MonoImage *image, guint32 token)
902 return mono_method_get_signature_full (method, image, token, NULL);
905 /* this is only for the typespec array methods */
907 mono_method_search_in_array_class (MonoClass *klass, const char *name, MonoMethodSignature *sig)
911 mono_class_setup_methods (klass);
912 g_assert (!klass->exception_type); /*FIXME this should not fail, right?*/
913 for (i = 0; i < klass->method.count; ++i) {
914 MonoMethod *method = klass->methods [i];
915 if (strcmp (method->name, name) == 0 && sig->param_count == method->signature->param_count)
922 method_from_memberref (MonoImage *image, guint32 idx, MonoGenericContext *typespec_context,
923 gboolean *used_context)
925 MonoClass *klass = NULL;
926 MonoMethod *method = NULL;
927 MonoTableInfo *tables = image->tables;
929 guint32 nindex, class, sig_idx;
931 MonoMethodSignature *sig;
934 mono_metadata_decode_row (&tables [MONO_TABLE_MEMBERREF], idx-1, cols, 3);
935 nindex = cols [MONO_MEMBERREF_CLASS] >> MONO_MEMBERREF_PARENT_BITS;
936 class = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
937 /*g_print ("methodref: 0x%x 0x%x %s\n", class, nindex,
938 mono_metadata_string_heap (m, cols [MONO_MEMBERREF_NAME]));*/
940 mname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
943 * Whether we actually used the `typespec_context' or not.
944 * This is used to tell our caller whether or not it's safe to insert the returned
945 * method into a cache.
948 *used_context = class == MONO_MEMBERREF_PARENT_TYPESPEC;
951 case MONO_MEMBERREF_PARENT_TYPEREF:
952 klass = mono_class_from_typeref (image, MONO_TOKEN_TYPE_REF | nindex);
954 char *name = mono_class_name_from_token (image, MONO_TOKEN_TYPE_REF | nindex);
955 g_warning ("Missing method %s in assembly %s, type %s", mname, image->name, name);
956 mono_loader_set_error_type_load (name, image->assembly_name);
961 case MONO_MEMBERREF_PARENT_TYPESPEC:
963 * Parse the TYPESPEC in the parent's context.
965 klass = mono_class_get_full (image, MONO_TOKEN_TYPE_SPEC | nindex, typespec_context);
967 char *name = mono_class_name_from_token (image, MONO_TOKEN_TYPE_SPEC | nindex);
968 g_warning ("Missing method %s in assembly %s, type %s", mname, image->name, name);
969 mono_loader_set_error_type_load (name, image->assembly_name);
974 case MONO_MEMBERREF_PARENT_TYPEDEF:
975 klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF | nindex);
977 char *name = mono_class_name_from_token (image, MONO_TOKEN_TYPE_DEF | nindex);
978 g_warning ("Missing method %s in assembly %s, type %s", mname, image->name, name);
979 mono_loader_set_error_type_load (name, image->assembly_name);
984 case MONO_MEMBERREF_PARENT_METHODDEF:
985 return mono_get_method (image, MONO_TOKEN_METHOD_DEF | nindex, NULL);
989 /* This message leaks */
990 char *message = g_strdup_printf ("Memberref parent unknown: class: %d, index %d", class, nindex);
991 mono_loader_set_error_method_load ("", message);
997 mono_class_init (klass);
999 sig_idx = cols [MONO_MEMBERREF_SIGNATURE];
1001 if (!mono_verifier_verify_memberref_method_signature (image, sig_idx, NULL)) {
1002 mono_loader_set_error_method_load (klass->name, mname);
1006 ptr = mono_metadata_blob_heap (image, sig_idx);
1007 mono_metadata_decode_blob_size (ptr, &ptr);
1009 sig = find_cached_memberref_sig (image, sig_idx);
1011 sig = mono_metadata_parse_method_signature (image, 0, ptr, NULL);
1015 sig = cache_memberref_sig (image, sig_idx, sig);
1019 case MONO_MEMBERREF_PARENT_TYPEREF:
1020 case MONO_MEMBERREF_PARENT_TYPEDEF:
1021 method = find_method (klass, NULL, mname, sig, klass);
1024 case MONO_MEMBERREF_PARENT_TYPESPEC: {
1027 type = &klass->byval_arg;
1029 if (type->type != MONO_TYPE_ARRAY && type->type != MONO_TYPE_SZARRAY) {
1030 MonoClass *in_class = klass->generic_class ? klass->generic_class->container_class : klass;
1031 method = find_method (in_class, NULL, mname, sig, klass);
1035 /* we're an array and we created these methods already in klass in mono_class_init () */
1036 method = mono_method_search_in_array_class (klass, mname, sig);
1040 g_error ("Memberref parent unknown: class: %d, index %d", class, nindex);
1041 g_assert_not_reached ();
1045 char *msig = mono_signature_get_desc (sig, FALSE);
1046 char * class_name = mono_type_get_name (&klass->byval_arg);
1047 GString *s = g_string_new (mname);
1048 if (sig->generic_param_count)
1049 g_string_append_printf (s, "<[%d]>", sig->generic_param_count);
1050 g_string_append_printf (s, "(%s)", msig);
1052 msig = g_string_free (s, FALSE);
1055 "Missing method %s::%s in assembly %s, referenced in assembly %s",
1056 class_name, msig, klass->image->name, image->name);
1057 mono_loader_set_error_method_load (class_name, mname);
1059 g_free (class_name);
1066 method_from_methodspec (MonoImage *image, MonoGenericContext *context, guint32 idx)
1071 MonoTableInfo *tables = image->tables;
1072 MonoGenericContext new_context;
1073 MonoGenericInst *inst;
1075 guint32 cols [MONO_METHODSPEC_SIZE];
1076 guint32 token, nindex, param_count;
1078 mono_metadata_decode_row (&tables [MONO_TABLE_METHODSPEC], idx - 1, cols, MONO_METHODSPEC_SIZE);
1079 token = cols [MONO_METHODSPEC_METHOD];
1080 nindex = token >> MONO_METHODDEFORREF_BITS;
1082 if (!mono_verifier_verify_methodspec_signature (image, cols [MONO_METHODSPEC_SIGNATURE], NULL))
1085 ptr = mono_metadata_blob_heap (image, cols [MONO_METHODSPEC_SIGNATURE]);
1087 mono_metadata_decode_value (ptr, &ptr);
1089 param_count = mono_metadata_decode_value (ptr, &ptr);
1090 g_assert (param_count);
1092 inst = mono_metadata_parse_generic_inst (image, NULL, param_count, ptr, &ptr);
1096 if (context && inst->is_open) {
1097 inst = mono_metadata_inflate_generic_inst (inst, context, &error);
1098 if (!mono_error_ok (&error)) {
1099 mono_error_cleanup (&error); /*FIXME don't swallow error message.*/
1104 if ((token & MONO_METHODDEFORREF_MASK) == MONO_METHODDEFORREF_METHODDEF)
1105 method = mono_get_method_full (image, MONO_TOKEN_METHOD_DEF | nindex, NULL, context);
1107 method = method_from_memberref (image, nindex, context, NULL);
1112 klass = method->klass;
1114 if (klass->generic_class) {
1115 g_assert (method->is_inflated);
1116 method = ((MonoMethodInflated *) method)->declaring;
1119 new_context.class_inst = klass->generic_class ? klass->generic_class->context.class_inst : NULL;
1120 new_context.method_inst = inst;
1122 return mono_class_inflate_generic_method_full (method, klass, &new_context);
1125 struct _MonoDllMap {
1133 static MonoDllMap *global_dll_map;
1136 mono_dllmap_lookup_list (MonoDllMap *dll_map, const char *dll, const char* func, const char **rdll, const char **rfunc) {
1144 mono_loader_lock ();
1147 * we use the first entry we find that matches, since entries from
1148 * the config file are prepended to the list and we document that the
1149 * later entries win.
1151 for (; dll_map; dll_map = dll_map->next) {
1152 if (dll_map->dll [0] == 'i' && dll_map->dll [1] == ':') {
1153 if (g_ascii_strcasecmp (dll_map->dll + 2, dll))
1155 } else if (strcmp (dll_map->dll, dll)) {
1158 if (!found && dll_map->target) {
1159 *rdll = dll_map->target;
1161 /* we don't quit here, because we could find a full
1162 * entry that matches also function and that has priority.
1165 if (dll_map->func && strcmp (dll_map->func, func) == 0) {
1166 *rfunc = dll_map->target_func;
1171 mono_loader_unlock ();
1176 mono_dllmap_lookup (MonoImage *assembly, const char *dll, const char* func, const char **rdll, const char **rfunc)
1179 if (assembly && assembly->dll_map) {
1180 res = mono_dllmap_lookup_list (assembly->dll_map, dll, func, rdll, rfunc);
1184 return mono_dllmap_lookup_list (global_dll_map, dll, func, rdll, rfunc);
1188 * mono_dllmap_insert:
1189 * @assembly: if NULL, this is a global mapping, otherwise the remapping of the dynamic library will only apply to the specified assembly
1190 * @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
1191 * @func: if not null, the mapping will only applied to the named function (the value of EntryPoint)
1192 * @tdll: The name of the library to map the specified @dll if it matches.
1193 * @tfunc: if func is not NULL, the name of the function that replaces the invocation
1195 * LOCKING: Acquires the loader lock.
1197 * This function is used to programatically add DllImport remapping in either
1198 * a specific assembly, or as a global remapping. This is done by remapping
1199 * references in a DllImport attribute from the @dll library name into the @tdll
1200 * name. If the @dll name contains the prefix "i:", the comparison of the
1201 * library name is done without case sensitivity.
1203 * If you pass @func, this is the name of the EntryPoint in a DllImport if specified
1204 * or the name of the function as determined by DllImport. If you pass @func, you
1205 * must also pass @tfunc which is the name of the target function to invoke on a match.
1208 * mono_dllmap_insert (NULL, "i:libdemo.dll", NULL, relocated_demo_path, NULL);
1210 * The above will remap DllImport statments for "libdemo.dll" and "LIBDEMO.DLL" to
1211 * the contents of relocated_demo_path for all assemblies in the Mono process.
1213 * NOTE: This can be called before the runtime is initialized, for example from
1214 * mono_config_parse ().
1217 mono_dllmap_insert (MonoImage *assembly, const char *dll, const char *func, const char *tdll, const char *tfunc)
1221 mono_loader_init ();
1223 mono_loader_lock ();
1226 entry = g_malloc0 (sizeof (MonoDllMap));
1227 entry->dll = dll? g_strdup (dll): NULL;
1228 entry->target = tdll? g_strdup (tdll): NULL;
1229 entry->func = func? g_strdup (func): NULL;
1230 entry->target_func = tfunc? g_strdup (tfunc): NULL;
1231 entry->next = global_dll_map;
1232 global_dll_map = entry;
1234 entry = mono_image_alloc0 (assembly, sizeof (MonoDllMap));
1235 entry->dll = dll? mono_image_strdup (assembly, dll): NULL;
1236 entry->target = tdll? mono_image_strdup (assembly, tdll): NULL;
1237 entry->func = func? mono_image_strdup (assembly, func): NULL;
1238 entry->target_func = tfunc? mono_image_strdup (assembly, tfunc): NULL;
1239 entry->next = assembly->dll_map;
1240 assembly->dll_map = entry;
1243 mono_loader_unlock ();
1247 free_dllmap (MonoDllMap *map)
1250 MonoDllMap *next = map->next;
1253 g_free (map->target);
1255 g_free (map->target_func);
1262 dllmap_cleanup (void)
1264 free_dllmap (global_dll_map);
1265 global_dll_map = NULL;
1268 static GHashTable *global_module_map;
1271 cached_module_load (const char *name, int flags, char **err)
1277 mono_loader_lock ();
1278 if (!global_module_map)
1279 global_module_map = g_hash_table_new (g_str_hash, g_str_equal);
1280 res = g_hash_table_lookup (global_module_map, name);
1282 mono_loader_unlock ();
1285 res = mono_dl_open (name, flags, err);
1287 g_hash_table_insert (global_module_map, g_strdup (name), res);
1288 mono_loader_unlock ();
1292 static MonoDl *internal_module;
1295 is_absolute_path (const char *path)
1297 #ifdef PLATFORM_MACOSX
1298 if (!strncmp (path, "@executable_path/", 17) || !strncmp (path, "@loader_path/", 13) ||
1299 !strncmp (path, "@rpath/", 7))
1302 return g_path_is_absolute (path);
1306 mono_lookup_pinvoke_call (MonoMethod *method, const char **exc_class, const char **exc_arg)
1308 MonoImage *image = method->klass->image;
1309 MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *)method;
1310 MonoTableInfo *tables = image->tables;
1311 MonoTableInfo *im = &tables [MONO_TABLE_IMPLMAP];
1312 MonoTableInfo *mr = &tables [MONO_TABLE_MODULEREF];
1313 guint32 im_cols [MONO_IMPLMAP_SIZE];
1314 guint32 scope_token;
1315 const char *import = NULL;
1316 const char *orig_scope;
1317 const char *new_scope;
1319 char *full_name, *file_name, *found_name = NULL;
1321 MonoDl *module = NULL;
1322 gboolean cached = FALSE;
1324 g_assert (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL);
1332 return piinfo->addr;
1334 if (method->klass->image->dynamic) {
1335 MonoReflectionMethodAux *method_aux =
1336 g_hash_table_lookup (
1337 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
1341 import = method_aux->dllentry;
1342 orig_scope = method_aux->dll;
1345 if (!piinfo->implmap_idx || piinfo->implmap_idx > im->rows)
1348 mono_metadata_decode_row (im, piinfo->implmap_idx - 1, im_cols, MONO_IMPLMAP_SIZE);
1350 if (!im_cols [MONO_IMPLMAP_SCOPE] || im_cols [MONO_IMPLMAP_SCOPE] > mr->rows)
1353 piinfo->piflags = im_cols [MONO_IMPLMAP_FLAGS];
1354 import = mono_metadata_string_heap (image, im_cols [MONO_IMPLMAP_NAME]);
1355 scope_token = mono_metadata_decode_row_col (mr, im_cols [MONO_IMPLMAP_SCOPE] - 1, MONO_MODULEREF_NAME);
1356 orig_scope = mono_metadata_string_heap (image, scope_token);
1359 mono_dllmap_lookup (image, orig_scope, import, &new_scope, &import);
1362 mono_loader_lock ();
1363 if (!image->pinvoke_scopes) {
1364 image->pinvoke_scopes = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL);
1365 image->pinvoke_scope_filenames = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
1367 module = g_hash_table_lookup (image->pinvoke_scopes, new_scope);
1368 found_name = g_hash_table_lookup (image->pinvoke_scope_filenames, new_scope);
1369 mono_loader_unlock ();
1373 found_name = g_strdup (found_name);
1377 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1378 "DllImport attempting to load: '%s'.", new_scope);
1380 /* we allow a special name to dlopen from the running process namespace */
1381 if (strcmp (new_scope, "__Internal") == 0){
1382 if (internal_module == NULL)
1383 internal_module = mono_dl_open (NULL, MONO_DL_LAZY, &error_msg);
1384 module = internal_module;
1389 * Try loading the module using a variety of names
1391 for (i = 0; i < 4; ++i) {
1392 char *base_name = NULL, *dir_name = NULL;
1393 gboolean is_absolute = is_absolute_path (new_scope);
1397 /* Try the original name */
1398 file_name = g_strdup (new_scope);
1401 /* Try trimming the .dll extension */
1402 if (strstr (new_scope, ".dll") == (new_scope + strlen (new_scope) - 4)) {
1403 file_name = g_strdup (new_scope);
1404 file_name [strlen (new_scope) - 4] = '\0';
1411 dir_name = g_path_get_dirname (new_scope);
1412 base_name = g_path_get_basename (new_scope);
1413 if (strstr (base_name, "lib") != base_name) {
1414 char *tmp = g_strdup_printf ("lib%s", base_name);
1417 file_name = g_strdup_printf ("%s%s%s", dir_name, G_DIR_SEPARATOR_S, base_name);
1420 } else if (strstr (new_scope, "lib") != new_scope) {
1421 file_name = g_strdup_printf ("lib%s", new_scope);
1426 #ifndef TARGET_WIN32
1427 if (!g_ascii_strcasecmp ("user32.dll", new_scope) ||
1428 !g_ascii_strcasecmp ("kernel32.dll", new_scope) ||
1429 !g_ascii_strcasecmp ("user32", new_scope) ||
1430 !g_ascii_strcasecmp ("kernel", new_scope)) {
1431 file_name = g_strdup ("libMonoSupportW.so");
1435 #ifndef TARGET_WIN32
1442 dir_name = g_path_get_dirname (file_name);
1444 base_name = g_path_get_basename (file_name);
1447 if (!module && is_absolute) {
1448 module = cached_module_load (file_name, MONO_DL_LAZY, &error_msg);
1450 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1451 "DllImport error loading library '%s': '%s'.",
1452 file_name, error_msg);
1455 found_name = g_strdup (file_name);
1459 if (!module && !is_absolute) {
1461 char *mdirname = g_path_get_dirname (image->name);
1462 while ((full_name = mono_dl_build_path (mdirname, file_name, &iter))) {
1463 module = cached_module_load (full_name, MONO_DL_LAZY, &error_msg);
1465 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1466 "DllImport error loading library '%s': '%s'.",
1467 full_name, error_msg);
1470 found_name = g_strdup (full_name);
1481 char *file_or_base = is_absolute ? base_name : file_name;
1482 while ((full_name = mono_dl_build_path (dir_name, file_or_base, &iter))) {
1483 module = cached_module_load (full_name, MONO_DL_LAZY, &error_msg);
1485 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1486 "DllImport error loading library '%s': '%s'.",
1487 full_name, error_msg);
1490 found_name = g_strdup (full_name);
1499 module = cached_module_load (file_name, MONO_DL_LAZY, &error_msg);
1501 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1502 "DllImport error loading library '%s': '%s'.",
1503 file_name, error_msg);
1505 found_name = g_strdup (file_name);
1520 mono_trace (G_LOG_LEVEL_WARNING, MONO_TRACE_DLLIMPORT,
1521 "DllImport unable to load library '%s'.",
1526 *exc_class = "DllNotFoundException";
1527 *exc_arg = new_scope;
1533 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1534 "DllImport loaded library '%s'.", found_name);
1535 mono_loader_lock ();
1536 if (!g_hash_table_lookup (image->pinvoke_scopes, new_scope)) {
1537 g_hash_table_insert (image->pinvoke_scopes, g_strdup (new_scope), module);
1538 g_hash_table_insert (image->pinvoke_scope_filenames, g_strdup (new_scope), g_strdup (found_name));
1540 mono_loader_unlock ();
1543 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1544 "DllImport searching in: '%s' ('%s').", new_scope, found_name);
1545 g_free (found_name);
1548 if (import && import [0] == '#' && isdigit (import [1])) {
1552 id = strtol (import + 1, &end, 10);
1553 if (id > 0 && *end == '\0')
1557 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1558 "Searching for '%s'.", import);
1560 if (piinfo->piflags & PINVOKE_ATTRIBUTE_NO_MANGLE) {
1561 error_msg = mono_dl_symbol (module, import, &piinfo->addr);
1563 char *mangled_name = NULL, *mangled_name2 = NULL;
1566 int mangle_param_count;
1572 * Search using a variety of mangled names
1574 for (mangle_charset = 0; mangle_charset <= 1; mangle_charset ++) {
1575 for (mangle_stdcall = 0; mangle_stdcall <= 1; mangle_stdcall ++) {
1576 gboolean need_param_count = FALSE;
1578 if (mangle_stdcall > 0)
1579 need_param_count = TRUE;
1581 for (mangle_param_count = 0; mangle_param_count <= (need_param_count ? 256 : 0); mangle_param_count += 4) {
1586 mangled_name = (char*)import;
1587 switch (piinfo->piflags & PINVOKE_ATTRIBUTE_CHAR_SET_MASK) {
1588 case PINVOKE_ATTRIBUTE_CHAR_SET_UNICODE:
1589 /* Try the mangled name first */
1590 if (mangle_charset == 0)
1591 mangled_name = g_strconcat (import, "W", NULL);
1593 case PINVOKE_ATTRIBUTE_CHAR_SET_AUTO:
1595 if (mangle_charset == 0)
1596 mangled_name = g_strconcat (import, "W", NULL);
1598 /* Try the mangled name last */
1599 if (mangle_charset == 1)
1600 mangled_name = g_strconcat (import, "A", NULL);
1603 case PINVOKE_ATTRIBUTE_CHAR_SET_ANSI:
1605 /* Try the mangled name last */
1606 if (mangle_charset == 1)
1607 mangled_name = g_strconcat (import, "A", NULL);
1612 if (mangle_param_count == 0)
1613 param_count = mono_method_signature (method)->param_count * sizeof (gpointer);
1615 /* Try brute force, since it would be very hard to compute the stack usage correctly */
1616 param_count = mangle_param_count;
1618 /* Try the stdcall mangled name */
1620 * gcc under windows creates mangled names without the underscore, but MS.NET
1621 * doesn't support it, so we doesn't support it either.
1623 if (mangle_stdcall == 1)
1624 mangled_name2 = g_strdup_printf ("_%s@%d", mangled_name, param_count);
1626 mangled_name2 = mangled_name;
1628 mangled_name2 = mangled_name;
1631 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1632 "Probing '%s'.", mangled_name2);
1634 error_msg = mono_dl_symbol (module, mangled_name2, &piinfo->addr);
1639 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1640 "Found as '%s'.", mangled_name2);
1642 if (mangled_name != mangled_name2)
1643 g_free (mangled_name2);
1644 if (mangled_name != import)
1645 g_free (mangled_name);
1651 if (!piinfo->addr) {
1654 *exc_class = "EntryPointNotFoundException";
1659 return piinfo->addr;
1663 * LOCKING: assumes the loader lock to be taken.
1666 mono_get_method_from_token (MonoImage *image, guint32 token, MonoClass *klass,
1667 MonoGenericContext *context, gboolean *used_context)
1670 int table = mono_metadata_token_table (token);
1671 int idx = mono_metadata_token_index (token);
1672 MonoTableInfo *tables = image->tables;
1673 MonoGenericContainer *generic_container = NULL, *container = NULL;
1674 const char *sig = NULL;
1676 guint32 cols [MONO_TYPEDEF_SIZE];
1678 if (image->dynamic) {
1679 MonoClass *handle_class;
1681 result = mono_lookup_dynamic_token_class (image, token, TRUE, &handle_class, context);
1682 // This checks the memberref type as well
1683 if (result && handle_class != mono_defaults.methodhandle_class) {
1684 mono_loader_set_error_bad_image (g_strdup_printf ("Bad method token 0x%08x on image %s.", token, image->name));
1690 if (table != MONO_TABLE_METHOD) {
1691 if (table == MONO_TABLE_METHODSPEC) {
1692 if (used_context) *used_context = TRUE;
1693 return method_from_methodspec (image, context, idx);
1695 if (table != MONO_TABLE_MEMBERREF) {
1696 g_warning ("got wrong token: 0x%08x\n", token);
1697 mono_loader_set_error_bad_image (g_strdup_printf ("Bad method token 0x%08x on image %s.", token, image->name));
1700 return method_from_memberref (image, idx, context, used_context);
1703 if (used_context) *used_context = FALSE;
1705 if (idx > image->tables [MONO_TABLE_METHOD].rows) {
1706 mono_loader_set_error_bad_image (g_strdup_printf ("Bad method token 0x%08x on image %s.", token, image->name));
1710 mono_metadata_decode_row (&image->tables [MONO_TABLE_METHOD], idx - 1, cols, 6);
1712 if ((cols [2] & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
1713 (cols [1] & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL)) {
1714 result = (MonoMethod *)mono_image_alloc0 (image, sizeof (MonoMethodPInvoke));
1716 result = (MonoMethod *)mono_image_alloc0 (image, sizeof (MonoMethod));
1717 methods_size += sizeof (MonoMethod);
1720 mono_stats.method_count ++;
1722 if (!klass) { /*FIXME put this before the image alloc*/
1723 guint32 type = mono_metadata_typedef_from_method (image, token);
1726 klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF | type);
1732 result->klass = klass;
1733 result->flags = cols [2];
1734 result->iflags = cols [1];
1735 result->token = token;
1736 result->name = mono_metadata_string_heap (image, cols [3]);
1738 if (!sig) /* already taken from the methodref */
1739 sig = mono_metadata_blob_heap (image, cols [4]);
1740 size = mono_metadata_decode_blob_size (sig, &sig);
1742 container = klass->generic_container;
1745 * load_generic_params does a binary search so only call it if the method
1749 generic_container = mono_metadata_load_generic_params (image, token, container);
1750 if (generic_container) {
1751 result->is_generic = TRUE;
1752 generic_container->owner.method = result;
1753 /*FIXME put this before the image alloc*/
1754 if (!mono_metadata_load_generic_param_constraints_full (image, token, generic_container))
1757 container = generic_container;
1760 if (cols [1] & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) {
1761 if (result->klass == mono_defaults.string_class && !strcmp (result->name, ".ctor"))
1762 result->string_ctor = 1;
1763 } else if (cols [2] & METHOD_ATTRIBUTE_PINVOKE_IMPL) {
1764 MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *)result;
1767 /* IJW is P/Invoke with a predefined function pointer. */
1768 if (image->is_module_handle && (cols [1] & METHOD_IMPL_ATTRIBUTE_NATIVE)) {
1769 piinfo->addr = mono_image_rva_map (image, cols [0]);
1770 g_assert (piinfo->addr);
1773 piinfo->implmap_idx = mono_metadata_implmap_from_method (image, idx - 1);
1774 /* Native methods can have no map. */
1775 if (piinfo->implmap_idx)
1776 piinfo->piflags = mono_metadata_decode_row_col (&tables [MONO_TABLE_IMPLMAP], piinfo->implmap_idx - 1, MONO_IMPLMAP_FLAGS);
1779 if (generic_container)
1780 mono_method_set_generic_container (result, generic_container);
1786 mono_get_method (MonoImage *image, guint32 token, MonoClass *klass)
1788 return mono_get_method_full (image, token, klass, NULL);
1792 mono_get_method_full (MonoImage *image, guint32 token, MonoClass *klass,
1793 MonoGenericContext *context)
1796 gboolean used_context = FALSE;
1798 /* We do everything inside the lock to prevent creation races */
1800 mono_image_lock (image);
1802 if (mono_metadata_token_table (token) == MONO_TABLE_METHOD) {
1803 if (!image->method_cache)
1804 image->method_cache = g_hash_table_new (NULL, NULL);
1805 result = g_hash_table_lookup (image->method_cache, GINT_TO_POINTER (mono_metadata_token_index (token)));
1807 if (!image->methodref_cache)
1808 image->methodref_cache = g_hash_table_new (NULL, NULL);
1809 result = g_hash_table_lookup (image->methodref_cache, GINT_TO_POINTER (token));
1811 mono_image_unlock (image);
1816 result = mono_get_method_from_token (image, token, klass, context, &used_context);
1820 mono_image_lock (image);
1821 if (!used_context && !result->is_inflated) {
1822 MonoMethod *result2;
1823 if (mono_metadata_token_table (token) == MONO_TABLE_METHOD)
1824 result2 = g_hash_table_lookup (image->method_cache, GINT_TO_POINTER (mono_metadata_token_index (token)));
1826 result2 = g_hash_table_lookup (image->methodref_cache, GINT_TO_POINTER (token));
1829 mono_image_unlock (image);
1833 if (mono_metadata_token_table (token) == MONO_TABLE_METHOD)
1834 g_hash_table_insert (image->method_cache, GINT_TO_POINTER (mono_metadata_token_index (token)), result);
1836 g_hash_table_insert (image->methodref_cache, GINT_TO_POINTER (token), result);
1839 mono_image_unlock (image);
1845 get_method_constrained (MonoImage *image, MonoMethod *method, MonoClass *constrained_class, MonoGenericContext *context)
1848 MonoClass *ic = NULL;
1849 MonoGenericContext *method_context = NULL;
1850 MonoMethodSignature *sig, *original_sig;
1852 mono_class_init (constrained_class);
1853 original_sig = sig = mono_method_signature (method);
1858 if (method->is_inflated && sig->generic_param_count) {
1859 MonoMethodInflated *imethod = (MonoMethodInflated *) method;
1860 sig = mono_method_signature (imethod->declaring); /*We assume that if the inflated method signature is valid, the declaring method is too*/
1861 method_context = mono_method_get_context (method);
1865 * We must inflate the signature with the class instantiation to work on
1866 * cases where a class inherit from a generic type and the override replaces
1867 * any type argument which a concrete type. See #325283.
1869 if (method_context->class_inst) {
1871 MonoGenericContext ctx;
1872 ctx.method_inst = NULL;
1873 ctx.class_inst = method_context->class_inst;
1874 /*Fixme, property propagate this error*/
1875 sig = inflate_generic_signature_checked (method->klass->image, sig, &ctx, &error);
1876 if (!mono_error_ok (&error)) {
1877 mono_error_cleanup (&error);
1883 if ((constrained_class != method->klass) && (MONO_CLASS_IS_INTERFACE (method->klass)))
1886 result = find_method (constrained_class, ic, method->name, sig, constrained_class);
1887 if (sig != original_sig)
1888 mono_metadata_free_inflated_signature (sig);
1891 char *m = mono_method_full_name (method, 1);
1892 g_warning ("Missing method %s.%s.%s in assembly %s method %s", method->klass->name_space,
1893 method->klass->name, method->name, image->name, m);
1899 result = mono_class_inflate_generic_method (result, method_context);
1905 mono_get_method_constrained_with_method (MonoImage *image, MonoMethod *method, MonoClass *constrained_class,
1906 MonoGenericContext *context)
1912 mono_loader_lock ();
1914 result = get_method_constrained (image, method, constrained_class, context);
1916 mono_loader_unlock ();
1920 * mono_get_method_constrained:
1922 * This is used when JITing the `constrained.' opcode.
1924 * This returns two values: the contrained method, which has been inflated
1925 * as the function return value; And the original CIL-stream method as
1926 * declared in cil_method. The later is used for verification.
1929 mono_get_method_constrained (MonoImage *image, guint32 token, MonoClass *constrained_class,
1930 MonoGenericContext *context, MonoMethod **cil_method)
1934 mono_loader_lock ();
1936 *cil_method = mono_get_method_from_token (image, token, NULL, context, NULL);
1938 mono_loader_unlock ();
1942 result = get_method_constrained (image, *cil_method, constrained_class, context);
1944 mono_loader_unlock ();
1949 mono_free_method (MonoMethod *method)
1951 if (mono_profiler_get_events () & MONO_PROFILE_METHOD_EVENTS)
1952 mono_profiler_method_free (method);
1954 /* FIXME: This hack will go away when the profiler will support freeing methods */
1955 if (mono_profiler_get_events () != MONO_PROFILE_NONE)
1958 if (method->signature) {
1960 * FIXME: This causes crashes because the types inside signatures and
1961 * locals are shared.
1963 /* mono_metadata_free_method_signature (method->signature); */
1964 /* g_free (method->signature); */
1967 if (method->dynamic) {
1968 MonoMethodWrapper *mw = (MonoMethodWrapper*)method;
1971 mono_marshal_free_dynamic_wrappers (method);
1973 mono_image_property_remove (method->klass->image, method);
1975 g_free ((char*)method->name);
1977 g_free ((char*)mw->header->code);
1978 for (i = 0; i < mw->header->num_locals; ++i)
1979 g_free (mw->header->locals [i]);
1980 g_free (mw->header->clauses);
1981 g_free (mw->header);
1983 g_free (mw->method_data);
1984 g_free (method->signature);
1990 mono_method_get_param_names (MonoMethod *method, const char **names)
1994 MonoTableInfo *methodt;
1995 MonoTableInfo *paramt;
1996 MonoMethodSignature *signature;
1999 if (method->is_inflated)
2000 method = ((MonoMethodInflated *) method)->declaring;
2002 signature = mono_method_signature (method);
2003 /*FIXME this check is somewhat redundant since the caller usally will have to get the signature to figure out the
2004 number of arguments and allocate a properly sized array. */
2005 if (signature == NULL)
2008 if (!signature->param_count)
2011 for (i = 0; i < signature->param_count; ++i)
2014 klass = method->klass;
2018 mono_class_init (klass);
2020 if (klass->image->dynamic) {
2021 MonoReflectionMethodAux *method_aux =
2022 g_hash_table_lookup (
2023 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
2024 if (method_aux && method_aux->param_names) {
2025 for (i = 0; i < mono_method_signature (method)->param_count; ++i)
2026 if (method_aux->param_names [i + 1])
2027 names [i] = method_aux->param_names [i + 1];
2032 if (method->wrapper_type) {
2033 char **pnames = NULL;
2035 mono_image_lock (klass->image);
2036 if (klass->image->wrapper_param_names)
2037 pnames = g_hash_table_lookup (klass->image->wrapper_param_names, method);
2038 mono_image_unlock (klass->image);
2041 for (i = 0; i < signature->param_count; ++i)
2042 names [i] = pnames [i];
2047 methodt = &klass->image->tables [MONO_TABLE_METHOD];
2048 paramt = &klass->image->tables [MONO_TABLE_PARAM];
2049 idx = mono_method_get_index (method);
2051 guint32 cols [MONO_PARAM_SIZE];
2054 param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
2056 if (idx < methodt->rows)
2057 lastp = mono_metadata_decode_row_col (methodt, idx, MONO_METHOD_PARAMLIST);
2059 lastp = paramt->rows + 1;
2060 for (i = param_index; i < lastp; ++i) {
2061 mono_metadata_decode_row (paramt, i -1, cols, MONO_PARAM_SIZE);
2062 if (cols [MONO_PARAM_SEQUENCE] && cols [MONO_PARAM_SEQUENCE] <= signature->param_count) /* skip return param spec and bounds check*/
2063 names [cols [MONO_PARAM_SEQUENCE] - 1] = mono_metadata_string_heap (klass->image, cols [MONO_PARAM_NAME]);
2069 mono_method_get_param_token (MonoMethod *method, int index)
2071 MonoClass *klass = method->klass;
2072 MonoTableInfo *methodt;
2075 mono_class_init (klass);
2077 if (klass->image->dynamic) {
2078 g_assert_not_reached ();
2081 methodt = &klass->image->tables [MONO_TABLE_METHOD];
2082 idx = mono_method_get_index (method);
2084 guint param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
2088 return mono_metadata_make_token (MONO_TABLE_PARAM, 0);
2090 return mono_metadata_make_token (MONO_TABLE_PARAM, param_index + index);
2097 mono_method_get_marshal_info (MonoMethod *method, MonoMarshalSpec **mspecs)
2100 MonoClass *klass = method->klass;
2101 MonoTableInfo *methodt;
2102 MonoTableInfo *paramt;
2103 MonoMethodSignature *signature;
2106 signature = mono_method_signature (method);
2107 g_assert (signature); /*FIXME there is no way to signal error from this function*/
2109 for (i = 0; i < signature->param_count + 1; ++i)
2112 if (method->klass->image->dynamic) {
2113 MonoReflectionMethodAux *method_aux =
2114 g_hash_table_lookup (
2115 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
2116 if (method_aux && method_aux->param_marshall) {
2117 MonoMarshalSpec **dyn_specs = method_aux->param_marshall;
2118 for (i = 0; i < signature->param_count + 1; ++i)
2119 if (dyn_specs [i]) {
2120 mspecs [i] = g_new0 (MonoMarshalSpec, 1);
2121 memcpy (mspecs [i], dyn_specs [i], sizeof (MonoMarshalSpec));
2122 mspecs [i]->data.custom_data.custom_name = g_strdup (dyn_specs [i]->data.custom_data.custom_name);
2123 mspecs [i]->data.custom_data.cookie = g_strdup (dyn_specs [i]->data.custom_data.cookie);
2129 mono_class_init (klass);
2131 methodt = &klass->image->tables [MONO_TABLE_METHOD];
2132 paramt = &klass->image->tables [MONO_TABLE_PARAM];
2133 idx = mono_method_get_index (method);
2135 guint32 cols [MONO_PARAM_SIZE];
2136 guint param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
2138 if (idx < methodt->rows)
2139 lastp = mono_metadata_decode_row_col (methodt, idx, MONO_METHOD_PARAMLIST);
2141 lastp = paramt->rows + 1;
2143 for (i = param_index; i < lastp; ++i) {
2144 mono_metadata_decode_row (paramt, i -1, cols, MONO_PARAM_SIZE);
2146 if (cols [MONO_PARAM_FLAGS] & PARAM_ATTRIBUTE_HAS_FIELD_MARSHAL && cols [MONO_PARAM_SEQUENCE] <= signature->param_count) {
2148 tp = mono_metadata_get_marshal_info (klass->image, i - 1, FALSE);
2150 mspecs [cols [MONO_PARAM_SEQUENCE]]= mono_metadata_parse_marshal_spec (klass->image, tp);
2159 mono_method_has_marshal_info (MonoMethod *method)
2162 MonoClass *klass = method->klass;
2163 MonoTableInfo *methodt;
2164 MonoTableInfo *paramt;
2167 if (method->klass->image->dynamic) {
2168 MonoReflectionMethodAux *method_aux =
2169 g_hash_table_lookup (
2170 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
2171 MonoMarshalSpec **dyn_specs = method_aux->param_marshall;
2173 for (i = 0; i < mono_method_signature (method)->param_count + 1; ++i)
2180 mono_class_init (klass);
2182 methodt = &klass->image->tables [MONO_TABLE_METHOD];
2183 paramt = &klass->image->tables [MONO_TABLE_PARAM];
2184 idx = mono_method_get_index (method);
2186 guint32 cols [MONO_PARAM_SIZE];
2187 guint param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
2189 if (idx + 1 < methodt->rows)
2190 lastp = mono_metadata_decode_row_col (methodt, idx, MONO_METHOD_PARAMLIST);
2192 lastp = paramt->rows + 1;
2194 for (i = param_index; i < lastp; ++i) {
2195 mono_metadata_decode_row (paramt, i -1, cols, MONO_PARAM_SIZE);
2197 if (cols [MONO_PARAM_FLAGS] & PARAM_ATTRIBUTE_HAS_FIELD_MARSHAL)
2206 mono_method_get_wrapper_data (MonoMethod *method, guint32 id)
2209 g_assert (method != NULL);
2210 g_assert (method->wrapper_type != MONO_WRAPPER_NONE);
2212 if (method->is_inflated)
2213 method = ((MonoMethodInflated *) method)->declaring;
2214 data = ((MonoMethodWrapper *)method)->method_data;
2215 g_assert (data != NULL);
2216 g_assert (id <= GPOINTER_TO_UINT (*data));
2223 } StackWalkUserData;
2226 stack_walk_adapter (MonoStackFrameInfo *frame, MonoContext *ctx, gpointer data)
2228 StackWalkUserData *d = data;
2230 switch (frame->type) {
2231 case FRAME_TYPE_DEBUGGER_INVOKE:
2232 case FRAME_TYPE_MANAGED_TO_NATIVE:
2234 case FRAME_TYPE_MANAGED:
2235 g_assert (frame->ji);
2236 return d->func (frame->ji->method, frame->native_offset, frame->il_offset, frame->managed, d->user_data);
2239 g_assert_not_reached ();
2245 mono_stack_walk (MonoStackWalk func, gpointer user_data)
2247 StackWalkUserData ud = { func, user_data };
2248 mono_get_eh_callbacks ()->mono_walk_stack_with_ctx (stack_walk_adapter, NULL, MONO_UNWIND_LOOKUP_ALL, &ud);
2252 mono_stack_walk_no_il (MonoStackWalk func, gpointer user_data)
2254 StackWalkUserData ud = { func, user_data };
2255 mono_get_eh_callbacks ()->mono_walk_stack_with_ctx (stack_walk_adapter, NULL, MONO_UNWIND_DEFAULT, &ud);
2259 last_managed (MonoMethod *m, gint no, gint ilo, gboolean managed, gpointer data)
2261 MonoMethod **dest = data;
2263 /*g_print ("In %s::%s [%d] [%d]\n", m->klass->name, m->name, no, ilo);*/
2269 mono_method_get_last_managed (void)
2271 MonoMethod *m = NULL;
2272 mono_stack_walk_no_il (last_managed, &m);
2276 static gboolean loader_lock_track_ownership = FALSE;
2281 * See docs/thread-safety.txt for the locking strategy.
2284 mono_loader_lock (void)
2286 mono_locks_acquire (&loader_mutex, LoaderLock);
2287 if (G_UNLIKELY (loader_lock_track_ownership)) {
2288 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));
2293 mono_loader_unlock (void)
2295 mono_locks_release (&loader_mutex, LoaderLock);
2296 if (G_UNLIKELY (loader_lock_track_ownership)) {
2297 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));
2302 * mono_loader_lock_track_ownership:
2304 * Set whenever the runtime should track ownership of the loader lock. If set to TRUE,
2305 * the mono_loader_lock_is_owned_by_self () can be called to query whenever the current
2306 * thread owns the loader lock.
2309 mono_loader_lock_track_ownership (gboolean track)
2311 loader_lock_track_ownership = track;
2315 * mono_loader_lock_is_owned_by_self:
2317 * Return whenever the current thread owns the loader lock.
2318 * This is useful to avoid blocking operations while holding the loader lock.
2321 mono_loader_lock_is_owned_by_self (void)
2323 g_assert (loader_lock_track_ownership);
2325 return GPOINTER_TO_UINT (mono_native_tls_get_value (loader_lock_nest_id)) > 0;
2329 * mono_loader_lock_if_inited:
2331 * Acquire the loader lock if it has been initialized, no-op otherwise. This can
2332 * be used in runtime initialization code which can be executed before mono_loader_init ().
2335 mono_loader_lock_if_inited (void)
2337 if (loader_lock_inited)
2338 mono_loader_lock ();
2342 mono_loader_unlock_if_inited (void)
2344 if (loader_lock_inited)
2345 mono_loader_unlock ();
2349 * mono_method_signature:
2351 * Return the signature of the method M. On failure, returns NULL, and ERR is set.
2353 MonoMethodSignature*
2354 mono_method_signature_checked (MonoMethod *m, MonoError *error)
2360 gboolean can_cache_signature;
2361 MonoGenericContainer *container;
2362 MonoMethodSignature *signature = NULL;
2365 /* We need memory barriers below because of the double-checked locking pattern */
2367 mono_error_init (error);
2370 return m->signature;
2372 mono_loader_lock ();
2375 mono_loader_unlock ();
2376 return m->signature;
2379 if (m->is_inflated) {
2380 MonoMethodInflated *imethod = (MonoMethodInflated *) m;
2381 /* the lock is recursive */
2382 signature = mono_method_signature (imethod->declaring);
2383 signature = inflate_generic_signature_checked (imethod->declaring->klass->image, signature, mono_method_get_context (m), error);
2384 if (!mono_error_ok (error)) {
2385 mono_loader_unlock ();
2389 inflated_signatures_size += mono_metadata_signature_size (signature);
2391 mono_memory_barrier ();
2392 m->signature = signature;
2393 mono_loader_unlock ();
2394 return m->signature;
2397 g_assert (mono_metadata_token_table (m->token) == MONO_TABLE_METHOD);
2398 idx = mono_metadata_token_index (m->token);
2399 img = m->klass->image;
2401 sig = mono_metadata_blob_heap (img, sig_offset = mono_metadata_decode_row_col (&img->tables [MONO_TABLE_METHOD], idx - 1, MONO_METHOD_SIGNATURE));
2403 g_assert (!m->klass->generic_class);
2404 container = mono_method_get_generic_container (m);
2406 container = m->klass->generic_container;
2408 /* Generic signatures depend on the container so they cannot be cached */
2409 /* icall/pinvoke signatures cannot be cached cause we modify them below */
2410 can_cache_signature = !(m->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && !(m->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) && !container;
2412 /* If the method has parameter attributes, that can modify the signature */
2413 if (mono_metadata_method_has_param_attrs (img, idx))
2414 can_cache_signature = FALSE;
2416 if (can_cache_signature)
2417 signature = g_hash_table_lookup (img->method_signatures, sig);
2420 const char *sig_body;
2421 /*TODO we should cache the failure result somewhere*/
2422 if (!mono_verifier_verify_method_signature (img, sig_offset, error)) {
2423 mono_loader_unlock ();
2427 size = mono_metadata_decode_blob_size (sig, &sig_body);
2429 signature = mono_metadata_parse_method_signature_full (img, container, idx, sig_body, NULL);
2431 mono_loader_clear_error ();
2432 mono_loader_unlock ();
2433 mono_error_set_method_load (error, m->klass, m->name, "");
2437 if (can_cache_signature)
2438 g_hash_table_insert (img->method_signatures, (gpointer)sig, signature);
2440 signatures_size += mono_metadata_signature_size (signature);
2443 /* Verify metadata consistency */
2444 if (signature->generic_param_count) {
2445 if (!container || !container->is_method) {
2446 mono_loader_unlock ();
2447 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);
2450 if (container->type_argc != signature->generic_param_count) {
2451 mono_loader_unlock ();
2452 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);
2455 } else if (container && container->is_method && container->type_argc) {
2456 mono_loader_unlock ();
2457 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);
2460 if (m->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL)
2461 signature->pinvoke = 1;
2462 else if (m->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) {
2463 MonoCallConvention conv = 0;
2464 MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *)m;
2465 signature->pinvoke = 1;
2467 switch (piinfo->piflags & PINVOKE_ATTRIBUTE_CALL_CONV_MASK) {
2468 case 0: /* no call conv, so using default */
2469 case PINVOKE_ATTRIBUTE_CALL_CONV_WINAPI:
2470 conv = MONO_CALL_DEFAULT;
2472 case PINVOKE_ATTRIBUTE_CALL_CONV_CDECL:
2475 case PINVOKE_ATTRIBUTE_CALL_CONV_STDCALL:
2476 conv = MONO_CALL_STDCALL;
2478 case PINVOKE_ATTRIBUTE_CALL_CONV_THISCALL:
2479 conv = MONO_CALL_THISCALL;
2481 case PINVOKE_ATTRIBUTE_CALL_CONV_FASTCALL:
2482 conv = MONO_CALL_FASTCALL;
2484 case PINVOKE_ATTRIBUTE_CALL_CONV_GENERIC:
2485 case PINVOKE_ATTRIBUTE_CALL_CONV_GENERICINST:
2487 mono_loader_unlock ();
2488 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);
2491 signature->call_convention = conv;
2494 mono_memory_barrier ();
2495 m->signature = signature;
2497 mono_loader_unlock ();
2498 return m->signature;
2502 * mono_method_signature:
2504 * Return the signature of the method M. On failure, returns NULL.
2506 MonoMethodSignature*
2507 mono_method_signature (MonoMethod *m)
2510 MonoMethodSignature *sig;
2512 sig = mono_method_signature_checked (m, &error);
2514 char *type_name = mono_type_get_full_name (m->klass);
2515 g_warning ("Could not load signature of %s:%s due to: %s", type_name, m->name, mono_error_get_message (&error));
2517 mono_error_cleanup (&error);
2524 mono_method_get_name (MonoMethod *method)
2526 return method->name;
2530 mono_method_get_class (MonoMethod *method)
2532 return method->klass;
2536 mono_method_get_token (MonoMethod *method)
2538 return method->token;
2542 mono_method_get_header (MonoMethod *method)
2548 MonoMethodHeader *header;
2550 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))
2553 if (method->is_inflated) {
2554 MonoMethodInflated *imethod = (MonoMethodInflated *) method;
2555 MonoMethodHeader *header;
2557 mono_loader_lock ();
2559 if (imethod->header) {
2560 mono_loader_unlock ();
2561 return imethod->header;
2564 header = mono_method_get_header (imethod->declaring);
2566 mono_loader_unlock ();
2570 imethod->header = inflate_generic_header (header, mono_method_get_context (method));
2571 mono_loader_unlock ();
2572 mono_metadata_free_mh (header);
2573 return imethod->header;
2576 if (method->wrapper_type != MONO_WRAPPER_NONE || method->sre_method) {
2577 MonoMethodWrapper *mw = (MonoMethodWrapper *)method;
2578 g_assert (mw->header);
2583 * We don't need locks here: the new header is allocated from malloc memory
2584 * and is not stored anywhere in the runtime, the user needs to free it.
2586 g_assert (mono_metadata_token_table (method->token) == MONO_TABLE_METHOD);
2587 idx = mono_metadata_token_index (method->token);
2588 img = method->klass->image;
2589 rva = mono_metadata_decode_row_col (&img->tables [MONO_TABLE_METHOD], idx - 1, MONO_METHOD_RVA);
2591 if (!mono_verifier_verify_method_header (img, rva, NULL))
2594 loc = mono_image_rva_map (img, rva);
2598 header = mono_metadata_parse_mh_full (img, mono_method_get_generic_container (method), loc);
2604 mono_method_get_flags (MonoMethod *method, guint32 *iflags)
2607 *iflags = method->iflags;
2608 return method->flags;
2612 * Find the method index in the metadata methodDef table.
2615 mono_method_get_index (MonoMethod *method) {
2616 MonoClass *klass = method->klass;
2620 /* constructed array methods are not in the MethodDef table */
2624 return mono_metadata_token_index (method->token);
2626 mono_class_setup_methods (klass);
2627 if (klass->exception_type)
2629 for (i = 0; i < klass->method.count; ++i) {
2630 if (method == klass->methods [i]) {
2631 if (klass->image->uncompressed_metadata)
2632 return mono_metadata_translate_token_index (klass->image, MONO_TABLE_METHOD, klass->method.first + i + 1);
2634 return klass->method.first + i + 1;