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]);
784 * mono_inflate_generic_signature:
786 * Inflate SIG with CONTEXT, and return a canonical copy. On error, set ERROR, and return NULL.
789 mono_inflate_generic_signature (MonoMethodSignature *sig, MonoGenericContext *context, MonoError *error)
791 MonoMethodSignature *res, *cached;
793 res = inflate_generic_signature_checked (NULL, sig, context, error);
794 if (!mono_error_ok (error))
796 cached = mono_metadata_get_inflated_signature (res, context);
798 mono_metadata_free_inflated_signature (res);
802 static MonoMethodHeader*
803 inflate_generic_header (MonoMethodHeader *header, MonoGenericContext *context)
805 MonoMethodHeader *res;
807 res = g_malloc0 (MONO_SIZEOF_METHOD_HEADER + sizeof (gpointer) * header->num_locals);
808 res->code = header->code;
809 res->code_size = header->code_size;
810 res->max_stack = header->max_stack;
811 res->num_clauses = header->num_clauses;
812 res->init_locals = header->init_locals;
813 res->num_locals = header->num_locals;
814 res->clauses = header->clauses;
815 for (i = 0; i < header->num_locals; ++i)
816 res->locals [i] = mono_class_inflate_generic_type (header->locals [i], context);
817 if (res->num_clauses) {
818 res->clauses = g_memdup (header->clauses, sizeof (MonoExceptionClause) * res->num_clauses);
819 for (i = 0; i < header->num_clauses; ++i) {
820 MonoExceptionClause *clause = &res->clauses [i];
821 if (clause->flags != MONO_EXCEPTION_CLAUSE_NONE)
823 clause->data.catch_class = mono_class_inflate_generic_class (clause->data.catch_class, context);
830 * token is the method_ref/def/spec token used in a call IL instruction.
833 mono_method_get_signature_full (MonoMethod *method, MonoImage *image, guint32 token, MonoGenericContext *context)
835 int table = mono_metadata_token_table (token);
836 int idx = mono_metadata_token_index (token);
838 guint32 cols [MONO_MEMBERREF_SIZE];
839 MonoMethodSignature *sig;
842 /* !table is for wrappers: we should really assign their own token to them */
843 if (!table || table == MONO_TABLE_METHOD)
844 return mono_method_signature (method);
846 if (table == MONO_TABLE_METHODSPEC) {
847 /* the verifier (do_invoke_method) will turn the NULL into a verifier error */
848 if ((method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) || !method->is_inflated)
851 return mono_method_signature (method);
854 if (method->klass->generic_class)
855 return mono_method_signature (method);
857 #ifndef DISABLE_REFLECTION_EMIT
858 if (image->dynamic) {
859 sig = mono_reflection_lookup_signature (image, method, token);
862 mono_metadata_decode_row (&image->tables [MONO_TABLE_MEMBERREF], idx-1, cols, MONO_MEMBERREF_SIZE);
863 sig_idx = cols [MONO_MEMBERREF_SIGNATURE];
865 sig = find_cached_memberref_sig (image, sig_idx);
867 if (!mono_verifier_verify_memberref_method_signature (image, sig_idx, NULL)) {
868 guint32 class = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
869 const char *fname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
871 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));
875 ptr = mono_metadata_blob_heap (image, sig_idx);
876 mono_metadata_decode_blob_size (ptr, &ptr);
877 sig = mono_metadata_parse_method_signature (image, 0, ptr, NULL);
880 sig = cache_memberref_sig (image, sig_idx, sig);
882 /* FIXME: we probably should verify signature compat in the dynamic case too*/
883 if (!mono_verifier_is_sig_compatible (image, method, sig)) {
884 guint32 class = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
885 const char *fname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
887 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));
890 #ifndef DISABLE_REFLECTION_EMIT
897 MonoMethodSignature *cached;
899 /* This signature is not owned by a MonoMethod, so need to cache */
900 sig = inflate_generic_signature_checked (image, sig, context, &error);
901 if (!mono_error_ok (&error)) {/*XXX bubble up this and kill one use of loader errors */
902 mono_loader_set_error_bad_image (g_strdup_printf ("Could not inflate signature %s", mono_error_get_message (&error)));
903 mono_error_cleanup (&error);
907 cached = mono_metadata_get_inflated_signature (sig, context);
909 mono_metadata_free_inflated_signature (sig);
911 inflated_signatures_size += mono_metadata_signature_size (cached);
919 mono_method_get_signature (MonoMethod *method, MonoImage *image, guint32 token)
921 return mono_method_get_signature_full (method, image, token, NULL);
924 /* this is only for the typespec array methods */
926 mono_method_search_in_array_class (MonoClass *klass, const char *name, MonoMethodSignature *sig)
930 mono_class_setup_methods (klass);
931 g_assert (!klass->exception_type); /*FIXME this should not fail, right?*/
932 for (i = 0; i < klass->method.count; ++i) {
933 MonoMethod *method = klass->methods [i];
934 if (strcmp (method->name, name) == 0 && sig->param_count == method->signature->param_count)
941 method_from_memberref (MonoImage *image, guint32 idx, MonoGenericContext *typespec_context,
942 gboolean *used_context)
944 MonoClass *klass = NULL;
945 MonoMethod *method = NULL;
946 MonoTableInfo *tables = image->tables;
948 guint32 nindex, class, sig_idx;
950 MonoMethodSignature *sig;
953 mono_metadata_decode_row (&tables [MONO_TABLE_MEMBERREF], idx-1, cols, 3);
954 nindex = cols [MONO_MEMBERREF_CLASS] >> MONO_MEMBERREF_PARENT_BITS;
955 class = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
956 /*g_print ("methodref: 0x%x 0x%x %s\n", class, nindex,
957 mono_metadata_string_heap (m, cols [MONO_MEMBERREF_NAME]));*/
959 mname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
962 * Whether we actually used the `typespec_context' or not.
963 * This is used to tell our caller whether or not it's safe to insert the returned
964 * method into a cache.
967 *used_context = class == MONO_MEMBERREF_PARENT_TYPESPEC;
970 case MONO_MEMBERREF_PARENT_TYPEREF:
971 klass = mono_class_from_typeref (image, MONO_TOKEN_TYPE_REF | nindex);
973 char *name = mono_class_name_from_token (image, MONO_TOKEN_TYPE_REF | nindex);
974 g_warning ("Missing method %s in assembly %s, type %s", mname, image->name, name);
975 mono_loader_set_error_type_load (name, image->assembly_name);
980 case MONO_MEMBERREF_PARENT_TYPESPEC:
982 * Parse the TYPESPEC in the parent's context.
984 klass = mono_class_get_full (image, MONO_TOKEN_TYPE_SPEC | nindex, typespec_context);
986 char *name = mono_class_name_from_token (image, MONO_TOKEN_TYPE_SPEC | nindex);
987 g_warning ("Missing method %s in assembly %s, type %s", mname, image->name, name);
988 mono_loader_set_error_type_load (name, image->assembly_name);
993 case MONO_MEMBERREF_PARENT_TYPEDEF:
994 klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF | nindex);
996 char *name = mono_class_name_from_token (image, MONO_TOKEN_TYPE_DEF | nindex);
997 g_warning ("Missing method %s in assembly %s, type %s", mname, image->name, name);
998 mono_loader_set_error_type_load (name, image->assembly_name);
1003 case MONO_MEMBERREF_PARENT_METHODDEF:
1004 return mono_get_method (image, MONO_TOKEN_METHOD_DEF | nindex, NULL);
1008 /* This message leaks */
1009 char *message = g_strdup_printf ("Memberref parent unknown: class: %d, index %d", class, nindex);
1010 mono_loader_set_error_method_load ("", message);
1016 mono_class_init (klass);
1018 sig_idx = cols [MONO_MEMBERREF_SIGNATURE];
1020 if (!mono_verifier_verify_memberref_method_signature (image, sig_idx, NULL)) {
1021 mono_loader_set_error_method_load (klass->name, mname);
1025 ptr = mono_metadata_blob_heap (image, sig_idx);
1026 mono_metadata_decode_blob_size (ptr, &ptr);
1028 sig = find_cached_memberref_sig (image, sig_idx);
1030 sig = mono_metadata_parse_method_signature (image, 0, ptr, NULL);
1034 sig = cache_memberref_sig (image, sig_idx, sig);
1038 case MONO_MEMBERREF_PARENT_TYPEREF:
1039 case MONO_MEMBERREF_PARENT_TYPEDEF:
1040 method = find_method (klass, NULL, mname, sig, klass);
1043 case MONO_MEMBERREF_PARENT_TYPESPEC: {
1046 type = &klass->byval_arg;
1048 if (type->type != MONO_TYPE_ARRAY && type->type != MONO_TYPE_SZARRAY) {
1049 MonoClass *in_class = klass->generic_class ? klass->generic_class->container_class : klass;
1050 method = find_method (in_class, NULL, mname, sig, klass);
1054 /* we're an array and we created these methods already in klass in mono_class_init () */
1055 method = mono_method_search_in_array_class (klass, mname, sig);
1059 g_error ("Memberref parent unknown: class: %d, index %d", class, nindex);
1060 g_assert_not_reached ();
1064 char *msig = mono_signature_get_desc (sig, FALSE);
1065 char * class_name = mono_type_get_name (&klass->byval_arg);
1066 GString *s = g_string_new (mname);
1067 if (sig->generic_param_count)
1068 g_string_append_printf (s, "<[%d]>", sig->generic_param_count);
1069 g_string_append_printf (s, "(%s)", msig);
1071 msig = g_string_free (s, FALSE);
1074 "Missing method %s::%s in assembly %s, referenced in assembly %s",
1075 class_name, msig, klass->image->name, image->name);
1076 mono_loader_set_error_method_load (class_name, mname);
1078 g_free (class_name);
1085 method_from_methodspec (MonoImage *image, MonoGenericContext *context, guint32 idx)
1090 MonoTableInfo *tables = image->tables;
1091 MonoGenericContext new_context;
1092 MonoGenericInst *inst;
1094 guint32 cols [MONO_METHODSPEC_SIZE];
1095 guint32 token, nindex, param_count;
1097 mono_metadata_decode_row (&tables [MONO_TABLE_METHODSPEC], idx - 1, cols, MONO_METHODSPEC_SIZE);
1098 token = cols [MONO_METHODSPEC_METHOD];
1099 nindex = token >> MONO_METHODDEFORREF_BITS;
1101 if (!mono_verifier_verify_methodspec_signature (image, cols [MONO_METHODSPEC_SIGNATURE], NULL))
1104 ptr = mono_metadata_blob_heap (image, cols [MONO_METHODSPEC_SIGNATURE]);
1106 mono_metadata_decode_value (ptr, &ptr);
1108 param_count = mono_metadata_decode_value (ptr, &ptr);
1109 g_assert (param_count);
1111 inst = mono_metadata_parse_generic_inst (image, NULL, param_count, ptr, &ptr);
1115 if (context && inst->is_open) {
1116 inst = mono_metadata_inflate_generic_inst (inst, context, &error);
1117 if (!mono_error_ok (&error)) {
1118 mono_error_cleanup (&error); /*FIXME don't swallow error message.*/
1123 if ((token & MONO_METHODDEFORREF_MASK) == MONO_METHODDEFORREF_METHODDEF)
1124 method = mono_get_method_full (image, MONO_TOKEN_METHOD_DEF | nindex, NULL, context);
1126 method = method_from_memberref (image, nindex, context, NULL);
1131 klass = method->klass;
1133 if (klass->generic_class) {
1134 g_assert (method->is_inflated);
1135 method = ((MonoMethodInflated *) method)->declaring;
1138 new_context.class_inst = klass->generic_class ? klass->generic_class->context.class_inst : NULL;
1139 new_context.method_inst = inst;
1141 return mono_class_inflate_generic_method_full (method, klass, &new_context);
1144 struct _MonoDllMap {
1152 static MonoDllMap *global_dll_map;
1155 mono_dllmap_lookup_list (MonoDllMap *dll_map, const char *dll, const char* func, const char **rdll, const char **rfunc) {
1163 mono_loader_lock ();
1166 * we use the first entry we find that matches, since entries from
1167 * the config file are prepended to the list and we document that the
1168 * later entries win.
1170 for (; dll_map; dll_map = dll_map->next) {
1171 if (dll_map->dll [0] == 'i' && dll_map->dll [1] == ':') {
1172 if (g_ascii_strcasecmp (dll_map->dll + 2, dll))
1174 } else if (strcmp (dll_map->dll, dll)) {
1177 if (!found && dll_map->target) {
1178 *rdll = dll_map->target;
1180 /* we don't quit here, because we could find a full
1181 * entry that matches also function and that has priority.
1184 if (dll_map->func && strcmp (dll_map->func, func) == 0) {
1185 *rfunc = dll_map->target_func;
1190 mono_loader_unlock ();
1195 mono_dllmap_lookup (MonoImage *assembly, const char *dll, const char* func, const char **rdll, const char **rfunc)
1198 if (assembly && assembly->dll_map) {
1199 res = mono_dllmap_lookup_list (assembly->dll_map, dll, func, rdll, rfunc);
1203 return mono_dllmap_lookup_list (global_dll_map, dll, func, rdll, rfunc);
1207 * mono_dllmap_insert:
1208 * @assembly: if NULL, this is a global mapping, otherwise the remapping of the dynamic library will only apply to the specified assembly
1209 * @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
1210 * @func: if not null, the mapping will only applied to the named function (the value of EntryPoint)
1211 * @tdll: The name of the library to map the specified @dll if it matches.
1212 * @tfunc: if func is not NULL, the name of the function that replaces the invocation
1214 * LOCKING: Acquires the loader lock.
1216 * This function is used to programatically add DllImport remapping in either
1217 * a specific assembly, or as a global remapping. This is done by remapping
1218 * references in a DllImport attribute from the @dll library name into the @tdll
1219 * name. If the @dll name contains the prefix "i:", the comparison of the
1220 * library name is done without case sensitivity.
1222 * If you pass @func, this is the name of the EntryPoint in a DllImport if specified
1223 * or the name of the function as determined by DllImport. If you pass @func, you
1224 * must also pass @tfunc which is the name of the target function to invoke on a match.
1227 * mono_dllmap_insert (NULL, "i:libdemo.dll", NULL, relocated_demo_path, NULL);
1229 * The above will remap DllImport statments for "libdemo.dll" and "LIBDEMO.DLL" to
1230 * the contents of relocated_demo_path for all assemblies in the Mono process.
1232 * NOTE: This can be called before the runtime is initialized, for example from
1233 * mono_config_parse ().
1236 mono_dllmap_insert (MonoImage *assembly, const char *dll, const char *func, const char *tdll, const char *tfunc)
1240 mono_loader_init ();
1242 mono_loader_lock ();
1245 entry = g_malloc0 (sizeof (MonoDllMap));
1246 entry->dll = dll? g_strdup (dll): NULL;
1247 entry->target = tdll? g_strdup (tdll): NULL;
1248 entry->func = func? g_strdup (func): NULL;
1249 entry->target_func = tfunc? g_strdup (tfunc): NULL;
1250 entry->next = global_dll_map;
1251 global_dll_map = entry;
1253 entry = mono_image_alloc0 (assembly, sizeof (MonoDllMap));
1254 entry->dll = dll? mono_image_strdup (assembly, dll): NULL;
1255 entry->target = tdll? mono_image_strdup (assembly, tdll): NULL;
1256 entry->func = func? mono_image_strdup (assembly, func): NULL;
1257 entry->target_func = tfunc? mono_image_strdup (assembly, tfunc): NULL;
1258 entry->next = assembly->dll_map;
1259 assembly->dll_map = entry;
1262 mono_loader_unlock ();
1266 free_dllmap (MonoDllMap *map)
1269 MonoDllMap *next = map->next;
1272 g_free (map->target);
1274 g_free (map->target_func);
1281 dllmap_cleanup (void)
1283 free_dllmap (global_dll_map);
1284 global_dll_map = NULL;
1287 static GHashTable *global_module_map;
1290 cached_module_load (const char *name, int flags, char **err)
1296 mono_loader_lock ();
1297 if (!global_module_map)
1298 global_module_map = g_hash_table_new (g_str_hash, g_str_equal);
1299 res = g_hash_table_lookup (global_module_map, name);
1301 mono_loader_unlock ();
1304 res = mono_dl_open (name, flags, err);
1306 g_hash_table_insert (global_module_map, g_strdup (name), res);
1307 mono_loader_unlock ();
1311 static MonoDl *internal_module;
1314 is_absolute_path (const char *path)
1316 #ifdef PLATFORM_MACOSX
1317 if (!strncmp (path, "@executable_path/", 17) || !strncmp (path, "@loader_path/", 13) ||
1318 !strncmp (path, "@rpath/", 7))
1321 return g_path_is_absolute (path);
1325 mono_lookup_pinvoke_call (MonoMethod *method, const char **exc_class, const char **exc_arg)
1327 MonoImage *image = method->klass->image;
1328 MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *)method;
1329 MonoTableInfo *tables = image->tables;
1330 MonoTableInfo *im = &tables [MONO_TABLE_IMPLMAP];
1331 MonoTableInfo *mr = &tables [MONO_TABLE_MODULEREF];
1332 guint32 im_cols [MONO_IMPLMAP_SIZE];
1333 guint32 scope_token;
1334 const char *import = NULL;
1335 const char *orig_scope;
1336 const char *new_scope;
1338 char *full_name, *file_name, *found_name = NULL;
1340 MonoDl *module = NULL;
1341 gboolean cached = FALSE;
1343 g_assert (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL);
1351 return piinfo->addr;
1353 if (method->klass->image->dynamic) {
1354 MonoReflectionMethodAux *method_aux =
1355 g_hash_table_lookup (
1356 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
1360 import = method_aux->dllentry;
1361 orig_scope = method_aux->dll;
1364 if (!piinfo->implmap_idx || piinfo->implmap_idx > im->rows)
1367 mono_metadata_decode_row (im, piinfo->implmap_idx - 1, im_cols, MONO_IMPLMAP_SIZE);
1369 if (!im_cols [MONO_IMPLMAP_SCOPE] || im_cols [MONO_IMPLMAP_SCOPE] > mr->rows)
1372 piinfo->piflags = im_cols [MONO_IMPLMAP_FLAGS];
1373 import = mono_metadata_string_heap (image, im_cols [MONO_IMPLMAP_NAME]);
1374 scope_token = mono_metadata_decode_row_col (mr, im_cols [MONO_IMPLMAP_SCOPE] - 1, MONO_MODULEREF_NAME);
1375 orig_scope = mono_metadata_string_heap (image, scope_token);
1378 mono_dllmap_lookup (image, orig_scope, import, &new_scope, &import);
1381 mono_loader_lock ();
1382 if (!image->pinvoke_scopes) {
1383 image->pinvoke_scopes = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL);
1384 image->pinvoke_scope_filenames = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
1386 module = g_hash_table_lookup (image->pinvoke_scopes, new_scope);
1387 found_name = g_hash_table_lookup (image->pinvoke_scope_filenames, new_scope);
1388 mono_loader_unlock ();
1392 found_name = g_strdup (found_name);
1396 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1397 "DllImport attempting to load: '%s'.", new_scope);
1399 /* we allow a special name to dlopen from the running process namespace */
1400 if (strcmp (new_scope, "__Internal") == 0){
1401 if (internal_module == NULL)
1402 internal_module = mono_dl_open (NULL, MONO_DL_LAZY, &error_msg);
1403 module = internal_module;
1408 * Try loading the module using a variety of names
1410 for (i = 0; i < 4; ++i) {
1411 char *base_name = NULL, *dir_name = NULL;
1412 gboolean is_absolute = is_absolute_path (new_scope);
1416 /* Try the original name */
1417 file_name = g_strdup (new_scope);
1420 /* Try trimming the .dll extension */
1421 if (strstr (new_scope, ".dll") == (new_scope + strlen (new_scope) - 4)) {
1422 file_name = g_strdup (new_scope);
1423 file_name [strlen (new_scope) - 4] = '\0';
1430 dir_name = g_path_get_dirname (new_scope);
1431 base_name = g_path_get_basename (new_scope);
1432 if (strstr (base_name, "lib") != base_name) {
1433 char *tmp = g_strdup_printf ("lib%s", base_name);
1436 file_name = g_strdup_printf ("%s%s%s", dir_name, G_DIR_SEPARATOR_S, base_name);
1439 } else if (strstr (new_scope, "lib") != new_scope) {
1440 file_name = g_strdup_printf ("lib%s", new_scope);
1445 #ifndef TARGET_WIN32
1446 if (!g_ascii_strcasecmp ("user32.dll", new_scope) ||
1447 !g_ascii_strcasecmp ("kernel32.dll", new_scope) ||
1448 !g_ascii_strcasecmp ("user32", new_scope) ||
1449 !g_ascii_strcasecmp ("kernel", new_scope)) {
1450 file_name = g_strdup ("libMonoSupportW.so");
1454 #ifndef TARGET_WIN32
1461 dir_name = g_path_get_dirname (file_name);
1463 base_name = g_path_get_basename (file_name);
1466 if (!module && is_absolute) {
1467 module = cached_module_load (file_name, MONO_DL_LAZY, &error_msg);
1469 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1470 "DllImport error loading library '%s': '%s'.",
1471 file_name, error_msg);
1474 found_name = g_strdup (file_name);
1478 if (!module && !is_absolute) {
1480 char *mdirname = g_path_get_dirname (image->name);
1481 while ((full_name = mono_dl_build_path (mdirname, file_name, &iter))) {
1482 module = cached_module_load (full_name, MONO_DL_LAZY, &error_msg);
1484 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1485 "DllImport error loading library '%s': '%s'.",
1486 full_name, error_msg);
1489 found_name = g_strdup (full_name);
1500 char *file_or_base = is_absolute ? base_name : file_name;
1501 while ((full_name = mono_dl_build_path (dir_name, file_or_base, &iter))) {
1502 module = cached_module_load (full_name, MONO_DL_LAZY, &error_msg);
1504 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1505 "DllImport error loading library '%s': '%s'.",
1506 full_name, error_msg);
1509 found_name = g_strdup (full_name);
1518 module = cached_module_load (file_name, MONO_DL_LAZY, &error_msg);
1520 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1521 "DllImport error loading library '%s': '%s'.",
1522 file_name, error_msg);
1524 found_name = g_strdup (file_name);
1539 mono_trace (G_LOG_LEVEL_WARNING, MONO_TRACE_DLLIMPORT,
1540 "DllImport unable to load library '%s'.",
1545 *exc_class = "DllNotFoundException";
1546 *exc_arg = new_scope;
1552 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1553 "DllImport loaded library '%s'.", found_name);
1554 mono_loader_lock ();
1555 if (!g_hash_table_lookup (image->pinvoke_scopes, new_scope)) {
1556 g_hash_table_insert (image->pinvoke_scopes, g_strdup (new_scope), module);
1557 g_hash_table_insert (image->pinvoke_scope_filenames, g_strdup (new_scope), g_strdup (found_name));
1559 mono_loader_unlock ();
1562 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1563 "DllImport searching in: '%s' ('%s').", new_scope, found_name);
1564 g_free (found_name);
1567 if (import && import [0] == '#' && isdigit (import [1])) {
1571 id = strtol (import + 1, &end, 10);
1572 if (id > 0 && *end == '\0')
1576 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1577 "Searching for '%s'.", import);
1579 if (piinfo->piflags & PINVOKE_ATTRIBUTE_NO_MANGLE) {
1580 error_msg = mono_dl_symbol (module, import, &piinfo->addr);
1582 char *mangled_name = NULL, *mangled_name2 = NULL;
1585 int mangle_param_count;
1591 * Search using a variety of mangled names
1593 for (mangle_charset = 0; mangle_charset <= 1; mangle_charset ++) {
1594 for (mangle_stdcall = 0; mangle_stdcall <= 1; mangle_stdcall ++) {
1595 gboolean need_param_count = FALSE;
1597 if (mangle_stdcall > 0)
1598 need_param_count = TRUE;
1600 for (mangle_param_count = 0; mangle_param_count <= (need_param_count ? 256 : 0); mangle_param_count += 4) {
1605 mangled_name = (char*)import;
1606 switch (piinfo->piflags & PINVOKE_ATTRIBUTE_CHAR_SET_MASK) {
1607 case PINVOKE_ATTRIBUTE_CHAR_SET_UNICODE:
1608 /* Try the mangled name first */
1609 if (mangle_charset == 0)
1610 mangled_name = g_strconcat (import, "W", NULL);
1612 case PINVOKE_ATTRIBUTE_CHAR_SET_AUTO:
1614 if (mangle_charset == 0)
1615 mangled_name = g_strconcat (import, "W", NULL);
1617 /* Try the mangled name last */
1618 if (mangle_charset == 1)
1619 mangled_name = g_strconcat (import, "A", NULL);
1622 case PINVOKE_ATTRIBUTE_CHAR_SET_ANSI:
1624 /* Try the mangled name last */
1625 if (mangle_charset == 1)
1626 mangled_name = g_strconcat (import, "A", NULL);
1631 if (mangle_param_count == 0)
1632 param_count = mono_method_signature (method)->param_count * sizeof (gpointer);
1634 /* Try brute force, since it would be very hard to compute the stack usage correctly */
1635 param_count = mangle_param_count;
1637 /* Try the stdcall mangled name */
1639 * gcc under windows creates mangled names without the underscore, but MS.NET
1640 * doesn't support it, so we doesn't support it either.
1642 if (mangle_stdcall == 1)
1643 mangled_name2 = g_strdup_printf ("_%s@%d", mangled_name, param_count);
1645 mangled_name2 = mangled_name;
1647 mangled_name2 = mangled_name;
1650 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1651 "Probing '%s'.", mangled_name2);
1653 error_msg = mono_dl_symbol (module, mangled_name2, &piinfo->addr);
1658 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1659 "Found as '%s'.", mangled_name2);
1661 if (mangled_name != mangled_name2)
1662 g_free (mangled_name2);
1663 if (mangled_name != import)
1664 g_free (mangled_name);
1670 if (!piinfo->addr) {
1673 *exc_class = "EntryPointNotFoundException";
1678 return piinfo->addr;
1682 * LOCKING: assumes the loader lock to be taken.
1685 mono_get_method_from_token (MonoImage *image, guint32 token, MonoClass *klass,
1686 MonoGenericContext *context, gboolean *used_context)
1689 int table = mono_metadata_token_table (token);
1690 int idx = mono_metadata_token_index (token);
1691 MonoTableInfo *tables = image->tables;
1692 MonoGenericContainer *generic_container = NULL, *container = NULL;
1693 const char *sig = NULL;
1695 guint32 cols [MONO_TYPEDEF_SIZE];
1697 if (image->dynamic) {
1698 MonoClass *handle_class;
1700 result = mono_lookup_dynamic_token_class (image, token, TRUE, &handle_class, context);
1701 // This checks the memberref type as well
1702 if (result && handle_class != mono_defaults.methodhandle_class) {
1703 mono_loader_set_error_bad_image (g_strdup_printf ("Bad method token 0x%08x on image %s.", token, image->name));
1709 if (table != MONO_TABLE_METHOD) {
1710 if (table == MONO_TABLE_METHODSPEC) {
1711 if (used_context) *used_context = TRUE;
1712 return method_from_methodspec (image, context, idx);
1714 if (table != MONO_TABLE_MEMBERREF) {
1715 g_warning ("got wrong token: 0x%08x\n", token);
1716 mono_loader_set_error_bad_image (g_strdup_printf ("Bad method token 0x%08x on image %s.", token, image->name));
1719 return method_from_memberref (image, idx, context, used_context);
1722 if (used_context) *used_context = FALSE;
1724 if (idx > image->tables [MONO_TABLE_METHOD].rows) {
1725 mono_loader_set_error_bad_image (g_strdup_printf ("Bad method token 0x%08x on image %s.", token, image->name));
1729 mono_metadata_decode_row (&image->tables [MONO_TABLE_METHOD], idx - 1, cols, 6);
1731 if ((cols [2] & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
1732 (cols [1] & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL)) {
1733 result = (MonoMethod *)mono_image_alloc0 (image, sizeof (MonoMethodPInvoke));
1735 result = (MonoMethod *)mono_image_alloc0 (image, sizeof (MonoMethod));
1736 methods_size += sizeof (MonoMethod);
1739 mono_stats.method_count ++;
1741 if (!klass) { /*FIXME put this before the image alloc*/
1742 guint32 type = mono_metadata_typedef_from_method (image, token);
1745 klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF | type);
1751 result->klass = klass;
1752 result->flags = cols [2];
1753 result->iflags = cols [1];
1754 result->token = token;
1755 result->name = mono_metadata_string_heap (image, cols [3]);
1757 if (!sig) /* already taken from the methodref */
1758 sig = mono_metadata_blob_heap (image, cols [4]);
1759 size = mono_metadata_decode_blob_size (sig, &sig);
1761 container = klass->generic_container;
1764 * load_generic_params does a binary search so only call it if the method
1768 generic_container = mono_metadata_load_generic_params (image, token, container);
1769 if (generic_container) {
1770 result->is_generic = TRUE;
1771 generic_container->owner.method = result;
1772 /*FIXME put this before the image alloc*/
1773 if (!mono_metadata_load_generic_param_constraints_full (image, token, generic_container))
1776 container = generic_container;
1779 if (cols [1] & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) {
1780 if (result->klass == mono_defaults.string_class && !strcmp (result->name, ".ctor"))
1781 result->string_ctor = 1;
1782 } else if (cols [2] & METHOD_ATTRIBUTE_PINVOKE_IMPL) {
1783 MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *)result;
1786 /* IJW is P/Invoke with a predefined function pointer. */
1787 if (image->is_module_handle && (cols [1] & METHOD_IMPL_ATTRIBUTE_NATIVE)) {
1788 piinfo->addr = mono_image_rva_map (image, cols [0]);
1789 g_assert (piinfo->addr);
1792 piinfo->implmap_idx = mono_metadata_implmap_from_method (image, idx - 1);
1793 /* Native methods can have no map. */
1794 if (piinfo->implmap_idx)
1795 piinfo->piflags = mono_metadata_decode_row_col (&tables [MONO_TABLE_IMPLMAP], piinfo->implmap_idx - 1, MONO_IMPLMAP_FLAGS);
1798 if (generic_container)
1799 mono_method_set_generic_container (result, generic_container);
1805 mono_get_method (MonoImage *image, guint32 token, MonoClass *klass)
1807 return mono_get_method_full (image, token, klass, NULL);
1811 mono_get_method_full (MonoImage *image, guint32 token, MonoClass *klass,
1812 MonoGenericContext *context)
1815 gboolean used_context = FALSE;
1817 /* We do everything inside the lock to prevent creation races */
1819 mono_image_lock (image);
1821 if (mono_metadata_token_table (token) == MONO_TABLE_METHOD) {
1822 if (!image->method_cache)
1823 image->method_cache = g_hash_table_new (NULL, NULL);
1824 result = g_hash_table_lookup (image->method_cache, GINT_TO_POINTER (mono_metadata_token_index (token)));
1826 if (!image->methodref_cache)
1827 image->methodref_cache = g_hash_table_new (NULL, NULL);
1828 result = g_hash_table_lookup (image->methodref_cache, GINT_TO_POINTER (token));
1830 mono_image_unlock (image);
1835 result = mono_get_method_from_token (image, token, klass, context, &used_context);
1839 mono_image_lock (image);
1840 if (!used_context && !result->is_inflated) {
1841 MonoMethod *result2;
1842 if (mono_metadata_token_table (token) == MONO_TABLE_METHOD)
1843 result2 = g_hash_table_lookup (image->method_cache, GINT_TO_POINTER (mono_metadata_token_index (token)));
1845 result2 = g_hash_table_lookup (image->methodref_cache, GINT_TO_POINTER (token));
1848 mono_image_unlock (image);
1852 if (mono_metadata_token_table (token) == MONO_TABLE_METHOD)
1853 g_hash_table_insert (image->method_cache, GINT_TO_POINTER (mono_metadata_token_index (token)), result);
1855 g_hash_table_insert (image->methodref_cache, GINT_TO_POINTER (token), result);
1858 mono_image_unlock (image);
1864 get_method_constrained (MonoImage *image, MonoMethod *method, MonoClass *constrained_class, MonoGenericContext *context)
1867 MonoClass *ic = NULL;
1868 MonoGenericContext *method_context = NULL;
1869 MonoMethodSignature *sig, *original_sig;
1871 mono_class_init (constrained_class);
1872 original_sig = sig = mono_method_signature (method);
1877 if (method->is_inflated && sig->generic_param_count) {
1878 MonoMethodInflated *imethod = (MonoMethodInflated *) method;
1879 sig = mono_method_signature (imethod->declaring); /*We assume that if the inflated method signature is valid, the declaring method is too*/
1880 method_context = mono_method_get_context (method);
1884 * We must inflate the signature with the class instantiation to work on
1885 * cases where a class inherit from a generic type and the override replaces
1886 * any type argument which a concrete type. See #325283.
1888 if (method_context->class_inst) {
1890 MonoGenericContext ctx;
1891 ctx.method_inst = NULL;
1892 ctx.class_inst = method_context->class_inst;
1893 /*Fixme, property propagate this error*/
1894 sig = inflate_generic_signature_checked (method->klass->image, sig, &ctx, &error);
1895 if (!mono_error_ok (&error)) {
1896 mono_error_cleanup (&error);
1902 if ((constrained_class != method->klass) && (MONO_CLASS_IS_INTERFACE (method->klass)))
1905 result = find_method (constrained_class, ic, method->name, sig, constrained_class);
1906 if (sig != original_sig)
1907 mono_metadata_free_inflated_signature (sig);
1910 char *m = mono_method_full_name (method, 1);
1911 g_warning ("Missing method %s.%s.%s in assembly %s method %s", method->klass->name_space,
1912 method->klass->name, method->name, image->name, m);
1918 result = mono_class_inflate_generic_method (result, method_context);
1924 mono_get_method_constrained_with_method (MonoImage *image, MonoMethod *method, MonoClass *constrained_class,
1925 MonoGenericContext *context)
1931 mono_loader_lock ();
1933 result = get_method_constrained (image, method, constrained_class, context);
1935 mono_loader_unlock ();
1939 * mono_get_method_constrained:
1941 * This is used when JITing the `constrained.' opcode.
1943 * This returns two values: the contrained method, which has been inflated
1944 * as the function return value; And the original CIL-stream method as
1945 * declared in cil_method. The later is used for verification.
1948 mono_get_method_constrained (MonoImage *image, guint32 token, MonoClass *constrained_class,
1949 MonoGenericContext *context, MonoMethod **cil_method)
1953 mono_loader_lock ();
1955 *cil_method = mono_get_method_from_token (image, token, NULL, context, NULL);
1957 mono_loader_unlock ();
1961 result = get_method_constrained (image, *cil_method, constrained_class, context);
1963 mono_loader_unlock ();
1968 mono_free_method (MonoMethod *method)
1970 if (mono_profiler_get_events () & MONO_PROFILE_METHOD_EVENTS)
1971 mono_profiler_method_free (method);
1973 /* FIXME: This hack will go away when the profiler will support freeing methods */
1974 if (mono_profiler_get_events () != MONO_PROFILE_NONE)
1977 if (method->signature) {
1979 * FIXME: This causes crashes because the types inside signatures and
1980 * locals are shared.
1982 /* mono_metadata_free_method_signature (method->signature); */
1983 /* g_free (method->signature); */
1986 if (method->dynamic) {
1987 MonoMethodWrapper *mw = (MonoMethodWrapper*)method;
1990 mono_marshal_free_dynamic_wrappers (method);
1992 mono_image_property_remove (method->klass->image, method);
1994 g_free ((char*)method->name);
1996 g_free ((char*)mw->header->code);
1997 for (i = 0; i < mw->header->num_locals; ++i)
1998 g_free (mw->header->locals [i]);
1999 g_free (mw->header->clauses);
2000 g_free (mw->header);
2002 g_free (mw->method_data);
2003 g_free (method->signature);
2009 mono_method_get_param_names (MonoMethod *method, const char **names)
2013 MonoTableInfo *methodt;
2014 MonoTableInfo *paramt;
2015 MonoMethodSignature *signature;
2018 if (method->is_inflated)
2019 method = ((MonoMethodInflated *) method)->declaring;
2021 signature = mono_method_signature (method);
2022 /*FIXME this check is somewhat redundant since the caller usally will have to get the signature to figure out the
2023 number of arguments and allocate a properly sized array. */
2024 if (signature == NULL)
2027 if (!signature->param_count)
2030 for (i = 0; i < signature->param_count; ++i)
2033 klass = method->klass;
2037 mono_class_init (klass);
2039 if (klass->image->dynamic) {
2040 MonoReflectionMethodAux *method_aux =
2041 g_hash_table_lookup (
2042 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
2043 if (method_aux && method_aux->param_names) {
2044 for (i = 0; i < mono_method_signature (method)->param_count; ++i)
2045 if (method_aux->param_names [i + 1])
2046 names [i] = method_aux->param_names [i + 1];
2051 if (method->wrapper_type) {
2052 char **pnames = NULL;
2054 mono_image_lock (klass->image);
2055 if (klass->image->wrapper_param_names)
2056 pnames = g_hash_table_lookup (klass->image->wrapper_param_names, method);
2057 mono_image_unlock (klass->image);
2060 for (i = 0; i < signature->param_count; ++i)
2061 names [i] = pnames [i];
2066 methodt = &klass->image->tables [MONO_TABLE_METHOD];
2067 paramt = &klass->image->tables [MONO_TABLE_PARAM];
2068 idx = mono_method_get_index (method);
2070 guint32 cols [MONO_PARAM_SIZE];
2073 param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
2075 if (idx < methodt->rows)
2076 lastp = mono_metadata_decode_row_col (methodt, idx, MONO_METHOD_PARAMLIST);
2078 lastp = paramt->rows + 1;
2079 for (i = param_index; i < lastp; ++i) {
2080 mono_metadata_decode_row (paramt, i -1, cols, MONO_PARAM_SIZE);
2081 if (cols [MONO_PARAM_SEQUENCE] && cols [MONO_PARAM_SEQUENCE] <= signature->param_count) /* skip return param spec and bounds check*/
2082 names [cols [MONO_PARAM_SEQUENCE] - 1] = mono_metadata_string_heap (klass->image, cols [MONO_PARAM_NAME]);
2088 mono_method_get_param_token (MonoMethod *method, int index)
2090 MonoClass *klass = method->klass;
2091 MonoTableInfo *methodt;
2094 mono_class_init (klass);
2096 if (klass->image->dynamic) {
2097 g_assert_not_reached ();
2100 methodt = &klass->image->tables [MONO_TABLE_METHOD];
2101 idx = mono_method_get_index (method);
2103 guint param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
2107 return mono_metadata_make_token (MONO_TABLE_PARAM, 0);
2109 return mono_metadata_make_token (MONO_TABLE_PARAM, param_index + index);
2116 mono_method_get_marshal_info (MonoMethod *method, MonoMarshalSpec **mspecs)
2119 MonoClass *klass = method->klass;
2120 MonoTableInfo *methodt;
2121 MonoTableInfo *paramt;
2122 MonoMethodSignature *signature;
2125 signature = mono_method_signature (method);
2126 g_assert (signature); /*FIXME there is no way to signal error from this function*/
2128 for (i = 0; i < signature->param_count + 1; ++i)
2131 if (method->klass->image->dynamic) {
2132 MonoReflectionMethodAux *method_aux =
2133 g_hash_table_lookup (
2134 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
2135 if (method_aux && method_aux->param_marshall) {
2136 MonoMarshalSpec **dyn_specs = method_aux->param_marshall;
2137 for (i = 0; i < signature->param_count + 1; ++i)
2138 if (dyn_specs [i]) {
2139 mspecs [i] = g_new0 (MonoMarshalSpec, 1);
2140 memcpy (mspecs [i], dyn_specs [i], sizeof (MonoMarshalSpec));
2141 mspecs [i]->data.custom_data.custom_name = g_strdup (dyn_specs [i]->data.custom_data.custom_name);
2142 mspecs [i]->data.custom_data.cookie = g_strdup (dyn_specs [i]->data.custom_data.cookie);
2148 mono_class_init (klass);
2150 methodt = &klass->image->tables [MONO_TABLE_METHOD];
2151 paramt = &klass->image->tables [MONO_TABLE_PARAM];
2152 idx = mono_method_get_index (method);
2154 guint32 cols [MONO_PARAM_SIZE];
2155 guint param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
2157 if (idx < methodt->rows)
2158 lastp = mono_metadata_decode_row_col (methodt, idx, MONO_METHOD_PARAMLIST);
2160 lastp = paramt->rows + 1;
2162 for (i = param_index; i < lastp; ++i) {
2163 mono_metadata_decode_row (paramt, i -1, cols, MONO_PARAM_SIZE);
2165 if (cols [MONO_PARAM_FLAGS] & PARAM_ATTRIBUTE_HAS_FIELD_MARSHAL && cols [MONO_PARAM_SEQUENCE] <= signature->param_count) {
2167 tp = mono_metadata_get_marshal_info (klass->image, i - 1, FALSE);
2169 mspecs [cols [MONO_PARAM_SEQUENCE]]= mono_metadata_parse_marshal_spec (klass->image, tp);
2178 mono_method_has_marshal_info (MonoMethod *method)
2181 MonoClass *klass = method->klass;
2182 MonoTableInfo *methodt;
2183 MonoTableInfo *paramt;
2186 if (method->klass->image->dynamic) {
2187 MonoReflectionMethodAux *method_aux =
2188 g_hash_table_lookup (
2189 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
2190 MonoMarshalSpec **dyn_specs = method_aux->param_marshall;
2192 for (i = 0; i < mono_method_signature (method)->param_count + 1; ++i)
2199 mono_class_init (klass);
2201 methodt = &klass->image->tables [MONO_TABLE_METHOD];
2202 paramt = &klass->image->tables [MONO_TABLE_PARAM];
2203 idx = mono_method_get_index (method);
2205 guint32 cols [MONO_PARAM_SIZE];
2206 guint param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
2208 if (idx + 1 < methodt->rows)
2209 lastp = mono_metadata_decode_row_col (methodt, idx, MONO_METHOD_PARAMLIST);
2211 lastp = paramt->rows + 1;
2213 for (i = param_index; i < lastp; ++i) {
2214 mono_metadata_decode_row (paramt, i -1, cols, MONO_PARAM_SIZE);
2216 if (cols [MONO_PARAM_FLAGS] & PARAM_ATTRIBUTE_HAS_FIELD_MARSHAL)
2225 mono_method_get_wrapper_data (MonoMethod *method, guint32 id)
2228 g_assert (method != NULL);
2229 g_assert (method->wrapper_type != MONO_WRAPPER_NONE);
2231 if (method->is_inflated)
2232 method = ((MonoMethodInflated *) method)->declaring;
2233 data = ((MonoMethodWrapper *)method)->method_data;
2234 g_assert (data != NULL);
2235 g_assert (id <= GPOINTER_TO_UINT (*data));
2242 } StackWalkUserData;
2245 stack_walk_adapter (MonoStackFrameInfo *frame, MonoContext *ctx, gpointer data)
2247 StackWalkUserData *d = data;
2249 switch (frame->type) {
2250 case FRAME_TYPE_DEBUGGER_INVOKE:
2251 case FRAME_TYPE_MANAGED_TO_NATIVE:
2253 case FRAME_TYPE_MANAGED:
2254 g_assert (frame->ji);
2255 return d->func (mono_jit_info_get_method (frame->ji), frame->native_offset, frame->il_offset, frame->managed, d->user_data);
2258 g_assert_not_reached ();
2264 mono_stack_walk (MonoStackWalk func, gpointer user_data)
2266 StackWalkUserData ud = { func, user_data };
2267 mono_get_eh_callbacks ()->mono_walk_stack_with_ctx (stack_walk_adapter, NULL, MONO_UNWIND_LOOKUP_ALL, &ud);
2271 mono_stack_walk_no_il (MonoStackWalk func, gpointer user_data)
2273 StackWalkUserData ud = { func, user_data };
2274 mono_get_eh_callbacks ()->mono_walk_stack_with_ctx (stack_walk_adapter, NULL, MONO_UNWIND_DEFAULT, &ud);
2278 last_managed (MonoMethod *m, gint no, gint ilo, gboolean managed, gpointer data)
2280 MonoMethod **dest = data;
2282 /*g_print ("In %s::%s [%d] [%d]\n", m->klass->name, m->name, no, ilo);*/
2288 mono_method_get_last_managed (void)
2290 MonoMethod *m = NULL;
2291 mono_stack_walk_no_il (last_managed, &m);
2295 static gboolean loader_lock_track_ownership = FALSE;
2300 * See docs/thread-safety.txt for the locking strategy.
2303 mono_loader_lock (void)
2305 mono_locks_acquire (&loader_mutex, LoaderLock);
2306 if (G_UNLIKELY (loader_lock_track_ownership)) {
2307 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));
2312 mono_loader_unlock (void)
2314 mono_locks_release (&loader_mutex, LoaderLock);
2315 if (G_UNLIKELY (loader_lock_track_ownership)) {
2316 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));
2321 * mono_loader_lock_track_ownership:
2323 * Set whenever the runtime should track ownership of the loader lock. If set to TRUE,
2324 * the mono_loader_lock_is_owned_by_self () can be called to query whenever the current
2325 * thread owns the loader lock.
2328 mono_loader_lock_track_ownership (gboolean track)
2330 loader_lock_track_ownership = track;
2334 * mono_loader_lock_is_owned_by_self:
2336 * Return whenever the current thread owns the loader lock.
2337 * This is useful to avoid blocking operations while holding the loader lock.
2340 mono_loader_lock_is_owned_by_self (void)
2342 g_assert (loader_lock_track_ownership);
2344 return GPOINTER_TO_UINT (mono_native_tls_get_value (loader_lock_nest_id)) > 0;
2348 * mono_loader_lock_if_inited:
2350 * Acquire the loader lock if it has been initialized, no-op otherwise. This can
2351 * be used in runtime initialization code which can be executed before mono_loader_init ().
2354 mono_loader_lock_if_inited (void)
2356 if (loader_lock_inited)
2357 mono_loader_lock ();
2361 mono_loader_unlock_if_inited (void)
2363 if (loader_lock_inited)
2364 mono_loader_unlock ();
2368 * mono_method_signature:
2370 * Return the signature of the method M. On failure, returns NULL, and ERR is set.
2372 MonoMethodSignature*
2373 mono_method_signature_checked (MonoMethod *m, MonoError *error)
2379 gboolean can_cache_signature;
2380 MonoGenericContainer *container;
2381 MonoMethodSignature *signature = NULL;
2384 /* We need memory barriers below because of the double-checked locking pattern */
2386 mono_error_init (error);
2389 return m->signature;
2391 mono_loader_lock ();
2394 mono_loader_unlock ();
2395 return m->signature;
2398 if (m->is_inflated) {
2399 MonoMethodInflated *imethod = (MonoMethodInflated *) m;
2400 /* the lock is recursive */
2401 signature = mono_method_signature (imethod->declaring);
2402 signature = inflate_generic_signature_checked (imethod->declaring->klass->image, signature, mono_method_get_context (m), error);
2403 if (!mono_error_ok (error)) {
2404 mono_loader_unlock ();
2408 inflated_signatures_size += mono_metadata_signature_size (signature);
2410 mono_memory_barrier ();
2411 m->signature = signature;
2412 mono_loader_unlock ();
2413 return m->signature;
2416 g_assert (mono_metadata_token_table (m->token) == MONO_TABLE_METHOD);
2417 idx = mono_metadata_token_index (m->token);
2418 img = m->klass->image;
2420 sig = mono_metadata_blob_heap (img, sig_offset = mono_metadata_decode_row_col (&img->tables [MONO_TABLE_METHOD], idx - 1, MONO_METHOD_SIGNATURE));
2422 g_assert (!m->klass->generic_class);
2423 container = mono_method_get_generic_container (m);
2425 container = m->klass->generic_container;
2427 /* Generic signatures depend on the container so they cannot be cached */
2428 /* icall/pinvoke signatures cannot be cached cause we modify them below */
2429 can_cache_signature = !(m->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && !(m->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) && !container;
2431 /* If the method has parameter attributes, that can modify the signature */
2432 if (mono_metadata_method_has_param_attrs (img, idx))
2433 can_cache_signature = FALSE;
2435 if (can_cache_signature)
2436 signature = g_hash_table_lookup (img->method_signatures, sig);
2439 const char *sig_body;
2440 /*TODO we should cache the failure result somewhere*/
2441 if (!mono_verifier_verify_method_signature (img, sig_offset, error)) {
2442 mono_loader_unlock ();
2446 size = mono_metadata_decode_blob_size (sig, &sig_body);
2448 signature = mono_metadata_parse_method_signature_full (img, container, idx, sig_body, NULL);
2450 mono_error_set_from_loader_error (error);
2451 mono_loader_unlock ();
2455 if (can_cache_signature)
2456 g_hash_table_insert (img->method_signatures, (gpointer)sig, signature);
2458 signatures_size += mono_metadata_signature_size (signature);
2461 /* Verify metadata consistency */
2462 if (signature->generic_param_count) {
2463 if (!container || !container->is_method) {
2464 mono_loader_unlock ();
2465 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);
2468 if (container->type_argc != signature->generic_param_count) {
2469 mono_loader_unlock ();
2470 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);
2473 } else if (container && container->is_method && container->type_argc) {
2474 mono_loader_unlock ();
2475 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);
2478 if (m->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL)
2479 signature->pinvoke = 1;
2480 else if (m->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) {
2481 MonoCallConvention conv = 0;
2482 MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *)m;
2483 signature->pinvoke = 1;
2485 switch (piinfo->piflags & PINVOKE_ATTRIBUTE_CALL_CONV_MASK) {
2486 case 0: /* no call conv, so using default */
2487 case PINVOKE_ATTRIBUTE_CALL_CONV_WINAPI:
2488 conv = MONO_CALL_DEFAULT;
2490 case PINVOKE_ATTRIBUTE_CALL_CONV_CDECL:
2493 case PINVOKE_ATTRIBUTE_CALL_CONV_STDCALL:
2494 conv = MONO_CALL_STDCALL;
2496 case PINVOKE_ATTRIBUTE_CALL_CONV_THISCALL:
2497 conv = MONO_CALL_THISCALL;
2499 case PINVOKE_ATTRIBUTE_CALL_CONV_FASTCALL:
2500 conv = MONO_CALL_FASTCALL;
2502 case PINVOKE_ATTRIBUTE_CALL_CONV_GENERIC:
2503 case PINVOKE_ATTRIBUTE_CALL_CONV_GENERICINST:
2505 mono_loader_unlock ();
2506 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);
2509 signature->call_convention = conv;
2512 mono_memory_barrier ();
2513 m->signature = signature;
2515 mono_loader_unlock ();
2516 return m->signature;
2520 * mono_method_signature:
2522 * Return the signature of the method M. On failure, returns NULL.
2524 MonoMethodSignature*
2525 mono_method_signature (MonoMethod *m)
2528 MonoMethodSignature *sig;
2530 sig = mono_method_signature_checked (m, &error);
2532 char *type_name = mono_type_get_full_name (m->klass);
2533 g_warning ("Could not load signature of %s:%s due to: %s", type_name, m->name, mono_error_get_message (&error));
2535 mono_error_cleanup (&error);
2542 mono_method_get_name (MonoMethod *method)
2544 return method->name;
2548 mono_method_get_class (MonoMethod *method)
2550 return method->klass;
2554 mono_method_get_token (MonoMethod *method)
2556 return method->token;
2560 mono_method_get_header (MonoMethod *method)
2566 MonoMethodHeader *header;
2568 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))
2571 if (method->is_inflated) {
2572 MonoMethodInflated *imethod = (MonoMethodInflated *) method;
2573 MonoMethodHeader *header;
2575 mono_loader_lock ();
2577 if (imethod->header) {
2578 mono_loader_unlock ();
2579 return imethod->header;
2582 header = mono_method_get_header (imethod->declaring);
2584 mono_loader_unlock ();
2588 imethod->header = inflate_generic_header (header, mono_method_get_context (method));
2589 mono_loader_unlock ();
2590 mono_metadata_free_mh (header);
2591 return imethod->header;
2594 if (method->wrapper_type != MONO_WRAPPER_NONE || method->sre_method) {
2595 MonoMethodWrapper *mw = (MonoMethodWrapper *)method;
2596 g_assert (mw->header);
2601 * We don't need locks here: the new header is allocated from malloc memory
2602 * and is not stored anywhere in the runtime, the user needs to free it.
2604 g_assert (mono_metadata_token_table (method->token) == MONO_TABLE_METHOD);
2605 idx = mono_metadata_token_index (method->token);
2606 img = method->klass->image;
2607 rva = mono_metadata_decode_row_col (&img->tables [MONO_TABLE_METHOD], idx - 1, MONO_METHOD_RVA);
2609 if (!mono_verifier_verify_method_header (img, rva, NULL))
2612 loc = mono_image_rva_map (img, rva);
2616 header = mono_metadata_parse_mh_full (img, mono_method_get_generic_container (method), loc);
2622 mono_method_get_flags (MonoMethod *method, guint32 *iflags)
2625 *iflags = method->iflags;
2626 return method->flags;
2630 * Find the method index in the metadata methodDef table.
2633 mono_method_get_index (MonoMethod *method) {
2634 MonoClass *klass = method->klass;
2638 /* constructed array methods are not in the MethodDef table */
2642 return mono_metadata_token_index (method->token);
2644 mono_class_setup_methods (klass);
2645 if (klass->exception_type)
2647 for (i = 0; i < klass->method.count; ++i) {
2648 if (method == klass->methods [i]) {
2649 if (klass->image->uncompressed_metadata)
2650 return mono_metadata_translate_token_index (klass->image, MONO_TABLE_METHOD, klass->method.first + i + 1);
2652 return klass->method.first + i + 1;