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)
12 * This file is used by the interpreter and the JIT engine to locate
13 * assemblies. Used to load AssemblyRef and later to resolve various
17 * This should keep track of the assembly versions that we are loading.
25 #include <mono/metadata/metadata.h>
26 #include <mono/metadata/image.h>
27 #include <mono/metadata/assembly.h>
28 #include <mono/metadata/tokentype.h>
29 #include <mono/metadata/tabledefs.h>
30 #include <mono/metadata/metadata-internals.h>
31 #include <mono/metadata/loader.h>
32 #include <mono/metadata/class-internals.h>
33 #include <mono/metadata/debug-helpers.h>
34 #include <mono/metadata/reflection.h>
35 #include <mono/metadata/profiler.h>
36 #include <mono/metadata/profiler-private.h>
37 #include <mono/metadata/exception.h>
38 #include <mono/metadata/marshal.h>
39 #include <mono/metadata/lock-tracer.h>
40 #include <mono/metadata/verify-internals.h>
41 #include <mono/utils/mono-logger.h>
42 #include <mono/utils/mono-dl.h>
43 #include <mono/utils/mono-membar.h>
44 #include <mono/utils/mono-counters.h>
45 #include <mono/utils/mono-error-internals.h>
47 MonoDefaults mono_defaults;
50 * This lock protects the hash tables inside MonoImage used by the metadata
51 * loading functions in class.c and loader.c.
53 * See domain-internals.h for locking policy in combination with the
56 static CRITICAL_SECTION loader_mutex;
59 static guint32 inflated_signatures_size;
60 static guint32 memberref_sig_cache_size;
63 * This TLS variable contains the last type load error encountered by the loader.
65 guint32 loader_error_thread_id;
68 * This TLS variable holds how many times the current thread has acquired the loader
71 guint32 loader_lock_nest_id;
76 static gboolean inited;
79 InitializeCriticalSection (&loader_mutex);
81 loader_error_thread_id = TlsAlloc ();
82 loader_lock_nest_id = TlsAlloc ();
84 mono_counters_register ("Inflated signatures size",
85 MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &inflated_signatures_size);
86 mono_counters_register ("Memberref signature cache size",
87 MONO_COUNTER_METADATA | MONO_COUNTER_INT, &memberref_sig_cache_size);
94 mono_loader_cleanup (void)
96 TlsFree (loader_error_thread_id);
97 TlsFree (loader_lock_nest_id);
99 /*DeleteCriticalSection (&loader_mutex);*/
103 * Handling of type load errors should be done as follows:
105 * If something could not be loaded, the loader should call one of the
106 * mono_loader_set_error_XXX functions ()
107 * with the appropriate arguments, then return NULL to report the failure. The error
108 * should be propagated until it reaches code which can throw managed exceptions. At that
109 * point, an exception should be thrown based on the information returned by
110 * mono_loader_get_last_error (). Then the error should be cleared by calling
111 * mono_loader_clear_error ().
115 set_loader_error (MonoLoaderError *error)
117 TlsSetValue (loader_error_thread_id, error);
121 * mono_loader_set_error_assembly_load:
123 * Set the loader error for this thread.
126 mono_loader_set_error_assembly_load (const char *assembly_name, gboolean ref_only)
128 MonoLoaderError *error;
130 if (mono_loader_get_last_error ())
133 error = g_new0 (MonoLoaderError, 1);
134 error->exception_type = MONO_EXCEPTION_FILE_NOT_FOUND;
135 error->assembly_name = g_strdup (assembly_name);
136 error->ref_only = ref_only;
139 * This is not strictly needed, but some (most) of the loader code still
140 * can't deal with load errors, and this message is more helpful than an
144 g_warning ("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);
146 g_warning ("Could not load file or assembly '%s' or one of its dependencies.", assembly_name);
148 set_loader_error (error);
152 * mono_loader_set_error_type_load:
154 * Set the loader error for this thread.
157 mono_loader_set_error_type_load (const char *class_name, const char *assembly_name)
159 MonoLoaderError *error;
161 if (mono_loader_get_last_error ())
164 error = g_new0 (MonoLoaderError, 1);
165 error->exception_type = MONO_EXCEPTION_TYPE_LOAD;
166 error->class_name = g_strdup (class_name);
167 error->assembly_name = g_strdup (assembly_name);
170 * This is not strictly needed, but some (most) of the loader code still
171 * can't deal with load errors, and this message is more helpful than an
174 g_warning ("The class %s could not be loaded, used in %s", class_name, assembly_name);
176 set_loader_error (error);
180 * mono_loader_set_error_method_load:
182 * Set the loader error for this thread. MEMBER_NAME should point to a string
186 mono_loader_set_error_method_load (const char *class_name, const char *member_name)
188 MonoLoaderError *error;
190 /* FIXME: Store the signature as well */
191 if (mono_loader_get_last_error ())
194 error = g_new0 (MonoLoaderError, 1);
195 error->exception_type = MONO_EXCEPTION_MISSING_METHOD;
196 error->class_name = g_strdup (class_name);
197 error->member_name = member_name;
199 set_loader_error (error);
203 * mono_loader_set_error_field_load:
205 * Set the loader error for this thread. MEMBER_NAME should point to a string
209 mono_loader_set_error_field_load (MonoClass *klass, const char *member_name)
211 MonoLoaderError *error;
213 /* FIXME: Store the signature as well */
214 if (mono_loader_get_last_error ())
217 error = g_new0 (MonoLoaderError, 1);
218 error->exception_type = MONO_EXCEPTION_MISSING_FIELD;
219 error->klass = klass;
220 error->member_name = member_name;
222 set_loader_error (error);
226 * mono_loader_set_error_bad_image:
228 * Set the loader error for this thread.
231 mono_loader_set_error_bad_image (char *msg)
233 MonoLoaderError *error;
235 if (mono_loader_get_last_error ())
238 error = g_new0 (MonoLoaderError, 1);
239 error->exception_type = MONO_EXCEPTION_BAD_IMAGE;
242 set_loader_error (error);
247 * mono_loader_get_last_error:
249 * Returns information about the last type load exception encountered by the loader, or
250 * NULL. After use, the exception should be cleared by calling mono_loader_clear_error.
253 mono_loader_get_last_error (void)
255 return (MonoLoaderError*)TlsGetValue (loader_error_thread_id);
259 * mono_loader_clear_error:
261 * Disposes any loader error messages on this thread
264 mono_loader_clear_error (void)
266 MonoLoaderError *ex = (MonoLoaderError*)TlsGetValue (loader_error_thread_id);
269 g_free (ex->class_name);
270 g_free (ex->assembly_name);
274 TlsSetValue (loader_error_thread_id, NULL);
279 * mono_loader_error_prepare_exception:
280 * @error: The MonoLoaderError to turn into an exception
282 * This turns a MonoLoaderError into an exception that can be thrown
283 * and resets the Mono Loader Error state during this process.
287 mono_loader_error_prepare_exception (MonoLoaderError *error)
289 MonoException *ex = NULL;
291 switch (error->exception_type) {
292 case MONO_EXCEPTION_TYPE_LOAD: {
293 char *cname = g_strdup (error->class_name);
294 char *aname = g_strdup (error->assembly_name);
295 MonoString *class_name;
297 mono_loader_clear_error ();
299 class_name = mono_string_new (mono_domain_get (), cname);
301 ex = mono_get_exception_type_load (class_name, aname);
306 case MONO_EXCEPTION_MISSING_METHOD: {
307 char *cname = g_strdup (error->class_name);
308 char *aname = g_strdup (error->member_name);
310 mono_loader_clear_error ();
311 ex = mono_get_exception_missing_method (cname, aname);
317 case MONO_EXCEPTION_MISSING_FIELD: {
318 char *cnspace = g_strdup ((error->klass && *error->klass->name_space) ? error->klass->name_space : "");
319 char *cname = g_strdup (error->klass ? error->klass->name : "");
320 char *cmembername = g_strdup (error->member_name);
323 mono_loader_clear_error ();
324 class_name = g_strdup_printf ("%s%s%s", cnspace, cnspace ? "." : "", cname);
326 ex = mono_get_exception_missing_field (class_name, cmembername);
329 g_free (cmembername);
334 case MONO_EXCEPTION_FILE_NOT_FOUND: {
339 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);
341 msg = g_strdup_printf ("Could not load file or assembly '%s' or one of its dependencies.", error->assembly_name);
342 filename = g_strdup (error->assembly_name);
343 /* Has to call this before calling anything which might call mono_class_init () */
344 mono_loader_clear_error ();
345 ex = mono_get_exception_file_not_found2 (msg, mono_string_new (mono_domain_get (), filename));
351 case MONO_EXCEPTION_BAD_IMAGE: {
352 char *msg = g_strdup (error->msg);
353 mono_loader_clear_error ();
354 ex = mono_get_exception_bad_image_format (msg);
360 g_assert_not_reached ();
367 * find_cached_memberref_sig:
369 * Return a cached copy of the memberref signature identified by SIG_IDX.
370 * We use a gpointer since the cache stores both MonoTypes and MonoMethodSignatures.
371 * A cache is needed since the type/signature parsing routines allocate everything
372 * from a mempool, so without a cache, multiple requests for the same signature would
373 * lead to unbounded memory growth. For normal methods/fields this is not a problem
374 * since the resulting methods/fields are cached, but inflated methods/fields cannot
376 * LOCKING: Acquires the loader lock.
379 find_cached_memberref_sig (MonoImage *image, guint32 sig_idx)
384 res = g_hash_table_lookup (image->memberref_signatures, GUINT_TO_POINTER (sig_idx));
385 mono_loader_unlock ();
391 cache_memberref_sig (MonoImage *image, guint32 sig_idx, gpointer sig)
396 prev_sig = g_hash_table_lookup (image->memberref_signatures, GUINT_TO_POINTER (sig_idx));
398 /* Somebody got in before us */
402 g_hash_table_insert (image->memberref_signatures, GUINT_TO_POINTER (sig_idx), sig);
403 /* An approximation based on glib 2.18 */
404 memberref_sig_cache_size += sizeof (gpointer) * 4;
407 mono_loader_unlock ();
412 static MonoClassField*
413 field_from_memberref (MonoImage *image, guint32 token, MonoClass **retklass,
414 MonoGenericContext *context)
417 MonoClassField *field;
418 MonoTableInfo *tables = image->tables;
421 guint32 nindex, class, class_table;
424 guint32 idx = mono_metadata_token_index (token);
426 mono_metadata_decode_row (&tables [MONO_TABLE_MEMBERREF], idx-1, cols, MONO_MEMBERREF_SIZE);
427 nindex = cols [MONO_MEMBERREF_CLASS] >> MONO_MEMBERREF_PARENT_BITS;
428 class = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
430 fname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
432 if (!mono_verifier_verify_memberref_signature (image, cols [MONO_MEMBERREF_SIGNATURE], NULL)) {
433 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));
438 case MONO_MEMBERREF_PARENT_TYPEDEF:
439 class_table = MONO_TOKEN_TYPE_DEF;
440 klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF | nindex);
442 case MONO_MEMBERREF_PARENT_TYPEREF:
443 class_table = MONO_TOKEN_TYPE_REF;
444 klass = mono_class_from_typeref (image, MONO_TOKEN_TYPE_REF | nindex);
446 case MONO_MEMBERREF_PARENT_TYPESPEC:
447 class_table = MONO_TOKEN_TYPE_SPEC;
448 klass = mono_class_get_full (image, MONO_TOKEN_TYPE_SPEC | nindex, context);
451 /*FIXME this must set a loader error!*/
452 g_warning ("field load from %x", class);
457 char *name = mono_class_name_from_token (image, class_table | nindex);
458 g_warning ("Missing field %s in class %s (type token %d)", fname, name, class_table | nindex);
459 mono_loader_set_error_type_load (name, image->assembly_name);
464 ptr = mono_metadata_blob_heap (image, cols [MONO_MEMBERREF_SIGNATURE]);
465 mono_metadata_decode_blob_size (ptr, &ptr);
466 /* we may want to check the signature here... */
469 g_warning ("Bad field signature class token %08x field name %s token %08x", class, fname, token);
470 mono_loader_set_error_field_load (klass, fname);
473 /* FIXME: This needs a cache, especially for generic instances, since
474 * mono_metadata_parse_type () allocates everything from a mempool.
476 sig_type = find_cached_memberref_sig (image, cols [MONO_MEMBERREF_SIGNATURE]);
478 sig_type = mono_metadata_parse_type (image, MONO_PARSE_TYPE, 0, ptr, &ptr);
479 if (sig_type == NULL) {
480 mono_loader_set_error_field_load (klass, fname);
483 sig_type = cache_memberref_sig (image, cols [MONO_MEMBERREF_SIGNATURE], sig_type);
486 mono_class_init (klass); /*FIXME is this really necessary?*/
489 field = mono_class_get_field_from_name_full (klass, fname, sig_type);
492 mono_loader_set_error_field_load (klass, fname);
498 mono_field_from_token (MonoImage *image, guint32 token, MonoClass **retklass,
499 MonoGenericContext *context)
503 MonoClassField *field;
505 if (image->dynamic) {
506 MonoClassField *result;
507 MonoClass *handle_class;
510 result = mono_lookup_dynamic_token_class (image, token, TRUE, &handle_class, context);
511 // This checks the memberref type as well
512 if (!result || handle_class != mono_defaults.fieldhandle_class) {
513 mono_loader_set_error_bad_image (g_strdup_printf ("Bad field token 0x%08x on image %s.", token, image->name));
516 *retklass = result->parent;
521 if ((field = g_hash_table_lookup (image->field_cache, GUINT_TO_POINTER (token)))) {
522 *retklass = field->parent;
523 mono_loader_unlock ();
526 mono_loader_unlock ();
528 if (mono_metadata_token_table (token) == MONO_TABLE_MEMBERREF)
529 field = field_from_memberref (image, token, retklass, context);
531 type = mono_metadata_typedef_from_field (image, mono_metadata_token_index (token));
534 k = mono_class_get (image, MONO_TOKEN_TYPE_DEF | type);
540 field = mono_class_get_field (k, token);
544 if (field && field->parent && !field->parent->generic_class && !field->parent->generic_container)
545 g_hash_table_insert (image->field_cache, GUINT_TO_POINTER (token), field);
546 mono_loader_unlock ();
551 mono_metadata_signature_vararg_match (MonoMethodSignature *sig1, MonoMethodSignature *sig2)
555 if (sig1->hasthis != sig2->hasthis ||
556 sig1->sentinelpos != sig2->sentinelpos)
559 for (i = 0; i < sig1->sentinelpos; i++) {
560 MonoType *p1 = sig1->params[i];
561 MonoType *p2 = sig2->params[i];
563 /*if (p1->attrs != p2->attrs)
566 if (!mono_metadata_type_equal (p1, p2))
570 if (!mono_metadata_type_equal (sig1->ret, sig2->ret))
576 find_method_in_class (MonoClass *klass, const char *name, const char *qname, const char *fqname,
577 MonoMethodSignature *sig, MonoClass *from_class)
581 /* Search directly in the metadata to avoid calling setup_methods () */
583 /* FIXME: !from_class->generic_class condition causes test failures. */
584 if (klass->type_token && !klass->image->dynamic && !klass->methods && !klass->rank && klass == from_class && !from_class->generic_class) {
585 for (i = 0; i < klass->method.count; ++i) {
586 guint32 cols [MONO_METHOD_SIZE];
589 MonoMethodSignature *other_sig;
591 mono_metadata_decode_table_row (klass->image, MONO_TABLE_METHOD, klass->method.first + i, cols, MONO_METHOD_SIZE);
593 m_name = mono_metadata_string_heap (klass->image, cols [MONO_METHOD_NAME]);
595 if (!((fqname && !strcmp (m_name, fqname)) ||
596 (qname && !strcmp (m_name, qname)) ||
597 (name && !strcmp (m_name, name))))
600 method = mono_get_method (klass->image, MONO_TOKEN_METHOD_DEF | (klass->method.first + i + 1), klass);
601 other_sig = mono_method_signature (method);
602 if (method && other_sig && (sig->call_convention != MONO_CALL_VARARG) && mono_metadata_signature_equal (sig, other_sig))
607 mono_class_setup_methods (klass);
609 We can't fail lookup of methods otherwise the runtime will fail with MissingMethodException instead of TypeLoadException.
610 See mono/tests/generic-type-load-exception.2.il
611 FIXME we should better report this error to the caller
615 for (i = 0; i < klass->method.count; ++i) {
616 MonoMethod *m = klass->methods [i];
617 MonoMethodSignature *msig;
619 if (!((fqname && !strcmp (m->name, fqname)) ||
620 (qname && !strcmp (m->name, qname)) ||
621 (name && !strcmp (m->name, name))))
623 msig = mono_method_signature (m);
627 if (sig->call_convention == MONO_CALL_VARARG) {
628 if (mono_metadata_signature_vararg_match (sig, msig))
631 if (mono_metadata_signature_equal (sig, msig))
636 if (i < klass->method.count)
637 return mono_class_get_method_by_index (from_class, i);
642 find_method (MonoClass *in_class, MonoClass *ic, const char* name, MonoMethodSignature *sig, MonoClass *from_class)
645 char *qname, *fqname, *class_name;
646 gboolean is_interface;
647 MonoMethod *result = NULL;
649 is_interface = MONO_CLASS_IS_INTERFACE (in_class);
652 class_name = mono_type_get_name_full (&ic->byval_arg, MONO_TYPE_NAME_FORMAT_IL);
654 qname = g_strconcat (class_name, ".", name, NULL);
655 if (ic->name_space && ic->name_space [0])
656 fqname = g_strconcat (ic->name_space, ".", class_name, ".", name, NULL);
660 class_name = qname = fqname = NULL;
663 g_assert (from_class);
664 result = find_method_in_class (in_class, name, qname, fqname, sig, from_class);
668 if (name [0] == '.' && (!strcmp (name, ".ctor") || !strcmp (name, ".cctor")))
671 g_assert (from_class->interface_offsets_count == in_class->interface_offsets_count);
672 for (i = 0; i < in_class->interface_offsets_count; i++) {
673 MonoClass *in_ic = in_class->interfaces_packed [i];
674 MonoClass *from_ic = from_class->interfaces_packed [i];
675 char *ic_qname, *ic_fqname, *ic_class_name;
677 ic_class_name = mono_type_get_name_full (&in_ic->byval_arg, MONO_TYPE_NAME_FORMAT_IL);
678 ic_qname = g_strconcat (ic_class_name, ".", name, NULL);
679 if (in_ic->name_space && in_ic->name_space [0])
680 ic_fqname = g_strconcat (in_ic->name_space, ".", ic_class_name, ".", name, NULL);
684 result = find_method_in_class (in_ic, ic ? name : NULL, ic_qname, ic_fqname, sig, from_ic);
685 g_free (ic_class_name);
692 in_class = in_class->parent;
693 from_class = from_class->parent;
695 g_assert (!in_class == !from_class);
698 result = find_method_in_class (mono_defaults.object_class, name, qname, fqname, sig, mono_defaults.object_class);
707 static MonoMethodSignature*
708 inflate_generic_signature (MonoImage *image, MonoMethodSignature *sig, MonoGenericContext *context)
710 MonoMethodSignature *res;
717 res = g_malloc0 (MONO_SIZEOF_METHOD_SIGNATURE + ((gint32)sig->param_count) * sizeof (MonoType*));
718 res->param_count = sig->param_count;
719 res->sentinelpos = -1;
720 res->ret = mono_class_inflate_generic_type (sig->ret, context);
721 is_open = mono_class_is_open_constructed_type (res->ret);
722 for (i = 0; i < sig->param_count; ++i) {
723 res->params [i] = mono_class_inflate_generic_type (sig->params [i], context);
725 is_open = mono_class_is_open_constructed_type (res->params [i]);
727 res->hasthis = sig->hasthis;
728 res->explicit_this = sig->explicit_this;
729 res->call_convention = sig->call_convention;
730 res->pinvoke = sig->pinvoke;
731 res->generic_param_count = sig->generic_param_count;
732 res->sentinelpos = sig->sentinelpos;
733 res->has_type_parameters = is_open;
734 res->is_inflated = 1;
738 static MonoMethodHeader*
739 inflate_generic_header (MonoMethodHeader *header, MonoGenericContext *context)
741 MonoMethodHeader *res;
743 res = g_malloc0 (MONO_SIZEOF_METHOD_HEADER + sizeof (gpointer) * header->num_locals);
744 res->code = header->code;
745 res->code_size = header->code_size;
746 res->max_stack = header->max_stack;
747 res->num_clauses = header->num_clauses;
748 res->init_locals = header->init_locals;
749 res->num_locals = header->num_locals;
750 res->clauses = header->clauses;
751 for (i = 0; i < header->num_locals; ++i)
752 res->locals [i] = mono_class_inflate_generic_type (header->locals [i], context);
753 if (res->num_clauses) {
754 res->clauses = g_memdup (header->clauses, sizeof (MonoExceptionClause) * res->num_clauses);
755 for (i = 0; i < header->num_clauses; ++i) {
756 MonoExceptionClause *clause = &res->clauses [i];
757 if (clause->flags != MONO_EXCEPTION_CLAUSE_NONE)
759 clause->data.catch_class = mono_class_inflate_generic_class (clause->data.catch_class, context);
766 * token is the method_ref/def/spec token used in a call IL instruction.
769 mono_method_get_signature_full (MonoMethod *method, MonoImage *image, guint32 token, MonoGenericContext *context)
771 int table = mono_metadata_token_table (token);
772 int idx = mono_metadata_token_index (token);
774 guint32 cols [MONO_MEMBERREF_SIZE];
775 MonoMethodSignature *sig;
778 /* !table is for wrappers: we should really assign their own token to them */
779 if (!table || table == MONO_TABLE_METHOD)
780 return mono_method_signature (method);
782 if (table == MONO_TABLE_METHODSPEC) {
783 /* the verifier (do_invoke_method) will turn the NULL into a verifier error */
784 if ((method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) || !method->is_inflated)
787 return mono_method_signature (method);
790 if (method->klass->generic_class)
791 return mono_method_signature (method);
794 /* FIXME: This might be incorrect for vararg methods */
795 return mono_method_signature (method);
797 mono_metadata_decode_row (&image->tables [MONO_TABLE_MEMBERREF], idx-1, cols, MONO_MEMBERREF_SIZE);
798 sig_idx = cols [MONO_MEMBERREF_SIGNATURE];
800 sig = find_cached_memberref_sig (image, sig_idx);
802 if (!mono_verifier_verify_memberref_signature (image, sig_idx, NULL)) {
803 guint32 class = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
804 const char *fname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
806 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));
810 ptr = mono_metadata_blob_heap (image, sig_idx);
811 mono_metadata_decode_blob_size (ptr, &ptr);
812 sig = mono_metadata_parse_method_signature (image, 0, ptr, NULL);
815 sig = cache_memberref_sig (image, sig_idx, sig);
818 if (!mono_verifier_is_sig_compatible (image, method, sig)) {
819 guint32 class = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
820 const char *fname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
822 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));
827 MonoMethodSignature *cached;
829 /* This signature is not owned by a MonoMethod, so need to cache */
830 sig = inflate_generic_signature (image, sig, context);
831 cached = mono_metadata_get_inflated_signature (sig, context);
833 mono_metadata_free_inflated_signature (sig);
835 inflated_signatures_size += mono_metadata_signature_size (cached);
843 mono_method_get_signature (MonoMethod *method, MonoImage *image, guint32 token)
845 return mono_method_get_signature_full (method, image, token, NULL);
848 /* this is only for the typespec array methods */
850 mono_method_search_in_array_class (MonoClass *klass, const char *name, MonoMethodSignature *sig)
854 mono_class_setup_methods (klass);
855 g_assert (!klass->exception_type); /*FIXME this should not fail, right?*/
856 for (i = 0; i < klass->method.count; ++i) {
857 MonoMethod *method = klass->methods [i];
858 if (strcmp (method->name, name) == 0 && sig->param_count == method->signature->param_count)
865 method_from_memberref (MonoImage *image, guint32 idx, MonoGenericContext *typespec_context,
866 gboolean *used_context)
868 MonoClass *klass = NULL;
869 MonoMethod *method = NULL;
870 MonoTableInfo *tables = image->tables;
872 guint32 nindex, class, sig_idx;
874 MonoMethodSignature *sig;
877 mono_metadata_decode_row (&tables [MONO_TABLE_MEMBERREF], idx-1, cols, 3);
878 nindex = cols [MONO_MEMBERREF_CLASS] >> MONO_MEMBERREF_PARENT_BITS;
879 class = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
880 /*g_print ("methodref: 0x%x 0x%x %s\n", class, nindex,
881 mono_metadata_string_heap (m, cols [MONO_MEMBERREF_NAME]));*/
883 mname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
886 * Whether we actually used the `typespec_context' or not.
887 * This is used to tell our caller whether or not it's safe to insert the returned
888 * method into a cache.
891 *used_context = class == MONO_MEMBERREF_PARENT_TYPESPEC;
894 case MONO_MEMBERREF_PARENT_TYPEREF:
895 klass = mono_class_from_typeref (image, MONO_TOKEN_TYPE_REF | nindex);
897 char *name = mono_class_name_from_token (image, MONO_TOKEN_TYPE_REF | nindex);
898 g_warning ("Missing method %s in assembly %s, type %s", mname, image->name, name);
899 mono_loader_set_error_type_load (name, image->assembly_name);
904 case MONO_MEMBERREF_PARENT_TYPESPEC:
906 * Parse the TYPESPEC in the parent's context.
908 klass = mono_class_get_full (image, MONO_TOKEN_TYPE_SPEC | nindex, typespec_context);
910 char *name = mono_class_name_from_token (image, MONO_TOKEN_TYPE_SPEC | nindex);
911 g_warning ("Missing method %s in assembly %s, type %s", mname, image->name, name);
912 mono_loader_set_error_type_load (name, image->assembly_name);
917 case MONO_MEMBERREF_PARENT_TYPEDEF:
918 klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF | nindex);
920 char *name = mono_class_name_from_token (image, MONO_TOKEN_TYPE_DEF | nindex);
921 g_warning ("Missing method %s in assembly %s, type %s", mname, image->name, name);
922 mono_loader_set_error_type_load (name, image->assembly_name);
927 case MONO_MEMBERREF_PARENT_METHODDEF:
928 return mono_get_method (image, MONO_TOKEN_METHOD_DEF | nindex, NULL);
932 /* This message leaks */
933 char *message = g_strdup_printf ("Memberref parent unknown: class: %d, index %d", class, nindex);
934 mono_loader_set_error_method_load ("", message);
940 mono_class_init (klass);
942 sig_idx = cols [MONO_MEMBERREF_SIGNATURE];
944 if (!mono_verifier_verify_memberref_signature (image, sig_idx, NULL)) {
945 mono_loader_set_error_method_load (klass->name, mname);
949 ptr = mono_metadata_blob_heap (image, sig_idx);
950 mono_metadata_decode_blob_size (ptr, &ptr);
952 sig = find_cached_memberref_sig (image, sig_idx);
954 sig = mono_metadata_parse_method_signature (image, 0, ptr, NULL);
958 sig = cache_memberref_sig (image, sig_idx, sig);
962 case MONO_MEMBERREF_PARENT_TYPEREF:
963 case MONO_MEMBERREF_PARENT_TYPEDEF:
964 method = find_method (klass, NULL, mname, sig, klass);
967 case MONO_MEMBERREF_PARENT_TYPESPEC: {
970 type = &klass->byval_arg;
972 if (type->type != MONO_TYPE_ARRAY && type->type != MONO_TYPE_SZARRAY) {
973 MonoClass *in_class = klass->generic_class ? klass->generic_class->container_class : klass;
974 method = find_method (in_class, NULL, mname, sig, klass);
978 /* we're an array and we created these methods already in klass in mono_class_init () */
979 method = mono_method_search_in_array_class (klass, mname, sig);
983 g_error ("Memberref parent unknown: class: %d, index %d", class, nindex);
984 g_assert_not_reached ();
988 char *msig = mono_signature_get_desc (sig, FALSE);
989 char * class_name = mono_type_get_name (&klass->byval_arg);
990 GString *s = g_string_new (mname);
991 if (sig->generic_param_count)
992 g_string_append_printf (s, "<[%d]>", sig->generic_param_count);
993 g_string_append_printf (s, "(%s)", msig);
995 msig = g_string_free (s, FALSE);
998 "Missing method %s::%s in assembly %s, referenced in assembly %s",
999 class_name, msig, klass->image->name, image->name);
1000 mono_loader_set_error_method_load (class_name, mname);
1002 g_free (class_name);
1009 method_from_methodspec (MonoImage *image, MonoGenericContext *context, guint32 idx)
1014 MonoTableInfo *tables = image->tables;
1015 MonoGenericContext new_context;
1016 MonoGenericInst *inst;
1018 guint32 cols [MONO_METHODSPEC_SIZE];
1019 guint32 token, nindex, param_count;
1021 mono_metadata_decode_row (&tables [MONO_TABLE_METHODSPEC], idx - 1, cols, MONO_METHODSPEC_SIZE);
1022 token = cols [MONO_METHODSPEC_METHOD];
1023 nindex = token >> MONO_METHODDEFORREF_BITS;
1025 if (!mono_verifier_verify_methodspec_signature (image, cols [MONO_METHODSPEC_SIGNATURE], NULL))
1028 ptr = mono_metadata_blob_heap (image, cols [MONO_METHODSPEC_SIGNATURE]);
1030 mono_metadata_decode_value (ptr, &ptr);
1032 param_count = mono_metadata_decode_value (ptr, &ptr);
1033 g_assert (param_count);
1035 inst = mono_metadata_parse_generic_inst (image, NULL, param_count, ptr, &ptr);
1036 if (context && inst->is_open) {
1037 inst = mono_metadata_inflate_generic_inst (inst, context, &error);
1038 if (!mono_error_ok (&error)) {
1039 mono_error_cleanup (&error); /*FIXME don't swallow error message.*/
1044 if ((token & MONO_METHODDEFORREF_MASK) == MONO_METHODDEFORREF_METHODDEF)
1045 method = mono_get_method_full (image, MONO_TOKEN_METHOD_DEF | nindex, NULL, context);
1047 method = method_from_memberref (image, nindex, context, NULL);
1052 klass = method->klass;
1054 if (klass->generic_class) {
1055 g_assert (method->is_inflated);
1056 method = ((MonoMethodInflated *) method)->declaring;
1059 new_context.class_inst = klass->generic_class ? klass->generic_class->context.class_inst : NULL;
1060 new_context.method_inst = inst;
1062 return mono_class_inflate_generic_method_full (method, klass, &new_context);
1065 struct _MonoDllMap {
1073 static MonoDllMap *global_dll_map;
1076 mono_dllmap_lookup_list (MonoDllMap *dll_map, const char *dll, const char* func, const char **rdll, const char **rfunc) {
1084 mono_loader_lock ();
1087 * we use the first entry we find that matches, since entries from
1088 * the config file are prepended to the list and we document that the
1089 * later entries win.
1091 for (; dll_map; dll_map = dll_map->next) {
1092 if (dll_map->dll [0] == 'i' && dll_map->dll [1] == ':') {
1093 if (g_ascii_strcasecmp (dll_map->dll + 2, dll))
1095 } else if (strcmp (dll_map->dll, dll)) {
1098 if (!found && dll_map->target) {
1099 *rdll = dll_map->target;
1101 /* we don't quit here, because we could find a full
1102 * entry that matches also function and that has priority.
1105 if (dll_map->func && strcmp (dll_map->func, func) == 0) {
1106 *rfunc = dll_map->target_func;
1111 mono_loader_unlock ();
1116 mono_dllmap_lookup (MonoImage *assembly, const char *dll, const char* func, const char **rdll, const char **rfunc)
1119 if (assembly && assembly->dll_map) {
1120 res = mono_dllmap_lookup_list (assembly->dll_map, dll, func, rdll, rfunc);
1124 return mono_dllmap_lookup_list (global_dll_map, dll, func, rdll, rfunc);
1128 * mono_dllmap_insert:
1130 * LOCKING: Acquires the loader lock.
1132 * NOTE: This can be called before the runtime is initialized, for example from
1133 * mono_config_parse ().
1136 mono_dllmap_insert (MonoImage *assembly, const char *dll, const char *func, const char *tdll, const char *tfunc)
1140 mono_loader_init ();
1142 mono_loader_lock ();
1145 entry = g_malloc0 (sizeof (MonoDllMap));
1146 entry->dll = dll? g_strdup (dll): NULL;
1147 entry->target = tdll? g_strdup (tdll): NULL;
1148 entry->func = func? g_strdup (func): NULL;
1149 entry->target_func = tfunc? g_strdup (tfunc): NULL;
1150 entry->next = global_dll_map;
1151 global_dll_map = entry;
1153 entry = mono_image_alloc0 (assembly, sizeof (MonoDllMap));
1154 entry->dll = dll? mono_image_strdup (assembly, dll): NULL;
1155 entry->target = tdll? mono_image_strdup (assembly, tdll): NULL;
1156 entry->func = func? mono_image_strdup (assembly, func): NULL;
1157 entry->target_func = tfunc? mono_image_strdup (assembly, tfunc): NULL;
1158 entry->next = assembly->dll_map;
1159 assembly->dll_map = entry;
1162 mono_loader_unlock ();
1165 static GHashTable *global_module_map;
1168 cached_module_load (const char *name, int flags, char **err)
1174 mono_loader_lock ();
1175 if (!global_module_map)
1176 global_module_map = g_hash_table_new (g_str_hash, g_str_equal);
1177 res = g_hash_table_lookup (global_module_map, name);
1179 mono_loader_unlock ();
1182 res = mono_dl_open (name, flags, NULL);
1184 g_hash_table_insert (global_module_map, g_strdup (name), res);
1185 mono_loader_unlock ();
1190 mono_lookup_pinvoke_call (MonoMethod *method, const char **exc_class, const char **exc_arg)
1192 MonoImage *image = method->klass->image;
1193 MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *)method;
1194 MonoTableInfo *tables = image->tables;
1195 MonoTableInfo *im = &tables [MONO_TABLE_IMPLMAP];
1196 MonoTableInfo *mr = &tables [MONO_TABLE_MODULEREF];
1197 guint32 im_cols [MONO_IMPLMAP_SIZE];
1198 guint32 scope_token;
1199 const char *import = NULL;
1200 const char *orig_scope;
1201 const char *new_scope;
1203 char *full_name, *file_name;
1205 MonoDl *module = NULL;
1207 g_assert (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL);
1210 return piinfo->addr;
1212 if (method->klass->image->dynamic) {
1213 MonoReflectionMethodAux *method_aux =
1214 g_hash_table_lookup (
1215 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
1219 import = method_aux->dllentry;
1220 orig_scope = method_aux->dll;
1223 if (!piinfo->implmap_idx)
1226 mono_metadata_decode_row (im, piinfo->implmap_idx - 1, im_cols, MONO_IMPLMAP_SIZE);
1228 piinfo->piflags = im_cols [MONO_IMPLMAP_FLAGS];
1229 import = mono_metadata_string_heap (image, im_cols [MONO_IMPLMAP_NAME]);
1230 scope_token = mono_metadata_decode_row_col (mr, im_cols [MONO_IMPLMAP_SCOPE] - 1, MONO_MODULEREF_NAME);
1231 orig_scope = mono_metadata_string_heap (image, scope_token);
1234 mono_dllmap_lookup (image, orig_scope, import, &new_scope, &import);
1236 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1237 "DllImport attempting to load: '%s'.", new_scope);
1244 /* we allow a special name to dlopen from the running process namespace */
1245 if (strcmp (new_scope, "__Internal") == 0)
1246 module = mono_dl_open (NULL, MONO_DL_LAZY, &error_msg);
1249 * Try loading the module using a variety of names
1251 for (i = 0; i < 4; ++i) {
1254 /* Try the original name */
1255 file_name = g_strdup (new_scope);
1258 /* Try trimming the .dll extension */
1259 if (strstr (new_scope, ".dll") == (new_scope + strlen (new_scope) - 4)) {
1260 file_name = g_strdup (new_scope);
1261 file_name [strlen (new_scope) - 4] = '\0';
1267 if (strstr (new_scope, "lib") != new_scope) {
1268 file_name = g_strdup_printf ("lib%s", new_scope);
1274 #ifndef TARGET_WIN32
1275 if (!g_ascii_strcasecmp ("user32.dll", new_scope) ||
1276 !g_ascii_strcasecmp ("kernel32.dll", new_scope) ||
1277 !g_ascii_strcasecmp ("user32", new_scope) ||
1278 !g_ascii_strcasecmp ("kernel", new_scope)) {
1279 file_name = g_strdup ("libMonoSupportW.so");
1283 #ifndef TARGET_WIN32
1290 while ((full_name = mono_dl_build_path (NULL, file_name, &iter))) {
1291 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1292 "DllImport loading location: '%s'.", full_name);
1293 module = cached_module_load (full_name, MONO_DL_LAZY, &error_msg);
1295 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1296 "DllImport error loading library: '%s'.",
1308 while ((full_name = mono_dl_build_path (".", file_name, &iter))) {
1309 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1310 "DllImport loading library: '%s'.", full_name);
1311 module = cached_module_load (full_name, MONO_DL_LAZY, &error_msg);
1313 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1314 "DllImport error loading library '%s'.",
1325 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1326 "DllImport loading: '%s'.", file_name);
1327 module = cached_module_load (file_name, MONO_DL_LAZY, &error_msg);
1329 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1330 "DllImport error loading library '%s'.",
1342 mono_trace (G_LOG_LEVEL_WARNING, MONO_TRACE_DLLIMPORT,
1343 "DllImport unable to load library '%s'.",
1348 *exc_class = "DllNotFoundException";
1349 *exc_arg = new_scope;
1354 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1355 "Searching for '%s'.", import);
1357 if (piinfo->piflags & PINVOKE_ATTRIBUTE_NO_MANGLE) {
1358 error_msg = mono_dl_symbol (module, import, &piinfo->addr);
1360 char *mangled_name = NULL, *mangled_name2 = NULL;
1363 int mangle_param_count;
1369 * Search using a variety of mangled names
1371 for (mangle_charset = 0; mangle_charset <= 1; mangle_charset ++) {
1372 for (mangle_stdcall = 0; mangle_stdcall <= 1; mangle_stdcall ++) {
1373 gboolean need_param_count = FALSE;
1375 if (mangle_stdcall > 0)
1376 need_param_count = TRUE;
1378 for (mangle_param_count = 0; mangle_param_count <= (need_param_count ? 256 : 0); mangle_param_count += 4) {
1383 mangled_name = (char*)import;
1384 switch (piinfo->piflags & PINVOKE_ATTRIBUTE_CHAR_SET_MASK) {
1385 case PINVOKE_ATTRIBUTE_CHAR_SET_UNICODE:
1386 /* Try the mangled name first */
1387 if (mangle_charset == 0)
1388 mangled_name = g_strconcat (import, "W", NULL);
1390 case PINVOKE_ATTRIBUTE_CHAR_SET_AUTO:
1392 if (mangle_charset == 0)
1393 mangled_name = g_strconcat (import, "W", NULL);
1395 /* Try the mangled name last */
1396 if (mangle_charset == 1)
1397 mangled_name = g_strconcat (import, "A", NULL);
1400 case PINVOKE_ATTRIBUTE_CHAR_SET_ANSI:
1402 /* Try the mangled name last */
1403 if (mangle_charset == 1)
1404 mangled_name = g_strconcat (import, "A", NULL);
1409 if (mangle_param_count == 0)
1410 param_count = mono_method_signature (method)->param_count * sizeof (gpointer);
1412 /* Try brute force, since it would be very hard to compute the stack usage correctly */
1413 param_count = mangle_param_count;
1415 /* Try the stdcall mangled name */
1417 * gcc under windows creates mangled names without the underscore, but MS.NET
1418 * doesn't support it, so we doesn't support it either.
1420 if (mangle_stdcall == 1)
1421 mangled_name2 = g_strdup_printf ("_%s@%d", mangled_name, param_count);
1423 mangled_name2 = mangled_name;
1425 mangled_name2 = mangled_name;
1428 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1429 "Probing '%s'.", mangled_name2);
1431 error_msg = mono_dl_symbol (module, mangled_name2, &piinfo->addr);
1434 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1435 "Found as '%s'.", mangled_name2);
1437 if (mangled_name != mangled_name2)
1438 g_free (mangled_name2);
1439 if (mangled_name != import)
1440 g_free (mangled_name);
1446 if (!piinfo->addr) {
1449 *exc_class = "EntryPointNotFoundException";
1454 return piinfo->addr;
1458 * LOCKING: assumes the loader lock to be taken.
1461 mono_get_method_from_token (MonoImage *image, guint32 token, MonoClass *klass,
1462 MonoGenericContext *context, gboolean *used_context)
1465 int table = mono_metadata_token_table (token);
1466 int idx = mono_metadata_token_index (token);
1467 MonoTableInfo *tables = image->tables;
1468 MonoGenericContainer *generic_container = NULL, *container = NULL;
1469 const char *sig = NULL;
1471 guint32 cols [MONO_TYPEDEF_SIZE];
1473 if (image->dynamic) {
1474 MonoClass *handle_class;
1476 result = mono_lookup_dynamic_token_class (image, token, TRUE, &handle_class, context);
1477 // This checks the memberref type as well
1478 if (result && handle_class != mono_defaults.methodhandle_class) {
1479 mono_loader_set_error_bad_image (g_strdup_printf ("Bad method token 0x%08x on image %s.", token, image->name));
1485 if (table != MONO_TABLE_METHOD) {
1486 if (table == MONO_TABLE_METHODSPEC) {
1487 if (used_context) *used_context = TRUE;
1488 return method_from_methodspec (image, context, idx);
1490 if (table != MONO_TABLE_MEMBERREF) {
1491 g_warning ("got wrong token: 0x%08x\n", token);
1492 mono_loader_set_error_bad_image (g_strdup_printf ("Bad method token 0x%08x on image %s.", token, image->name));
1495 return method_from_memberref (image, idx, context, used_context);
1498 if (used_context) *used_context = FALSE;
1500 if (idx > image->tables [MONO_TABLE_METHOD].rows) {
1501 mono_loader_set_error_bad_image (g_strdup_printf ("Bad method token 0x%08x on image %s.", token, image->name));
1505 mono_metadata_decode_row (&image->tables [MONO_TABLE_METHOD], idx - 1, cols, 6);
1507 if ((cols [2] & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
1508 (cols [1] & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL))
1509 result = (MonoMethod *)mono_image_alloc0 (image, sizeof (MonoMethodPInvoke));
1511 result = (MonoMethod *)mono_image_alloc0 (image, sizeof (MonoMethodNormal));
1513 mono_stats.method_count ++;
1515 if (!klass) { /*FIXME put this before the image alloc*/
1516 guint32 type = mono_metadata_typedef_from_method (image, token);
1519 klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF | type);
1525 result->klass = klass;
1526 result->flags = cols [2];
1527 result->iflags = cols [1];
1528 result->token = token;
1529 result->name = mono_metadata_string_heap (image, cols [3]);
1531 if (!sig) /* already taken from the methodref */
1532 sig = mono_metadata_blob_heap (image, cols [4]);
1533 size = mono_metadata_decode_blob_size (sig, &sig);
1535 container = klass->generic_container;
1538 * load_generic_params does a binary search so only call it if the method
1542 generic_container = mono_metadata_load_generic_params (image, token, container);
1543 if (generic_container) {
1544 result->is_generic = TRUE;
1545 generic_container->owner.method = result;
1546 /*FIXME put this before the image alloc*/
1547 if (!mono_metadata_load_generic_param_constraints_full (image, token, generic_container))
1550 container = generic_container;
1553 if (cols [1] & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) {
1554 if (result->klass == mono_defaults.string_class && !strcmp (result->name, ".ctor"))
1555 result->string_ctor = 1;
1556 } else if (cols [2] & METHOD_ATTRIBUTE_PINVOKE_IMPL) {
1557 MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *)result;
1560 /* IJW is P/Invoke with a predefined function pointer. */
1561 if (image->is_module_handle && (cols [1] & METHOD_IMPL_ATTRIBUTE_NATIVE)) {
1562 piinfo->addr = mono_image_rva_map (image, cols [0]);
1563 g_assert (piinfo->addr);
1566 piinfo->implmap_idx = mono_metadata_implmap_from_method (image, idx - 1);
1567 /* Native methods can have no map. */
1568 if (piinfo->implmap_idx)
1569 piinfo->piflags = mono_metadata_decode_row_col (&tables [MONO_TABLE_IMPLMAP], piinfo->implmap_idx - 1, MONO_IMPLMAP_FLAGS);
1572 if (generic_container)
1573 mono_method_set_generic_container (result, generic_container);
1579 mono_get_method (MonoImage *image, guint32 token, MonoClass *klass)
1581 return mono_get_method_full (image, token, klass, NULL);
1585 mono_get_method_full (MonoImage *image, guint32 token, MonoClass *klass,
1586 MonoGenericContext *context)
1589 gboolean used_context = FALSE;
1591 /* We do everything inside the lock to prevent creation races */
1593 mono_image_lock (image);
1595 if (mono_metadata_token_table (token) == MONO_TABLE_METHOD) {
1596 if (!image->method_cache)
1597 image->method_cache = g_hash_table_new (NULL, NULL);
1598 result = g_hash_table_lookup (image->method_cache, GINT_TO_POINTER (mono_metadata_token_index (token)));
1600 if (!image->methodref_cache)
1601 image->methodref_cache = g_hash_table_new (NULL, NULL);
1602 result = g_hash_table_lookup (image->methodref_cache, GINT_TO_POINTER (token));
1604 mono_image_unlock (image);
1609 result = mono_get_method_from_token (image, token, klass, context, &used_context);
1613 mono_image_lock (image);
1614 if (!used_context && !result->is_inflated) {
1615 MonoMethod *result2;
1616 if (mono_metadata_token_table (token) == MONO_TABLE_METHOD)
1617 result2 = g_hash_table_lookup (image->method_cache, GINT_TO_POINTER (mono_metadata_token_index (token)));
1619 result2 = g_hash_table_lookup (image->methodref_cache, GINT_TO_POINTER (token));
1622 mono_image_unlock (image);
1626 if (mono_metadata_token_table (token) == MONO_TABLE_METHOD)
1627 g_hash_table_insert (image->method_cache, GINT_TO_POINTER (mono_metadata_token_index (token)), result);
1629 g_hash_table_insert (image->methodref_cache, GINT_TO_POINTER (token), result);
1632 mono_image_unlock (image);
1638 * mono_get_method_constrained:
1640 * This is used when JITing the `constrained.' opcode.
1642 * This returns two values: the contrained method, which has been inflated
1643 * as the function return value; And the original CIL-stream method as
1644 * declared in cil_method. The later is used for verification.
1647 mono_get_method_constrained (MonoImage *image, guint32 token, MonoClass *constrained_class,
1648 MonoGenericContext *context, MonoMethod **cil_method)
1650 MonoMethod *method, *result;
1651 MonoClass *ic = NULL;
1652 MonoGenericContext *method_context = NULL;
1653 MonoMethodSignature *sig, *original_sig;
1655 mono_loader_lock ();
1657 *cil_method = mono_get_method_from_token (image, token, NULL, context, NULL);
1659 mono_loader_unlock ();
1663 mono_class_init (constrained_class);
1664 method = *cil_method;
1665 original_sig = sig = mono_method_signature (method);
1669 if (method->is_inflated && sig->generic_param_count) {
1670 MonoMethodInflated *imethod = (MonoMethodInflated *) method;
1671 sig = mono_method_signature (imethod->declaring); /*We assume that if the inflated method signature is valid, the declaring method is too*/
1672 method_context = mono_method_get_context (method);
1676 * We must inflate the signature with the class instantiation to work on
1677 * cases where a class inherit from a generic type and the override replaces
1678 * any type argument which a concrete type. See #325283.
1680 if (method_context->class_inst) {
1681 MonoGenericContext ctx;
1682 ctx.method_inst = NULL;
1683 ctx.class_inst = method_context->class_inst;
1685 sig = inflate_generic_signature (method->klass->image, sig, &ctx);
1691 if ((constrained_class != method->klass) && (MONO_CLASS_IS_INTERFACE (method->klass)))
1694 result = find_method (constrained_class, ic, method->name, sig, constrained_class);
1695 if (sig != original_sig)
1696 mono_metadata_free_inflated_signature (sig);
1699 g_warning ("Missing method %s.%s.%s in assembly %s token %x", method->klass->name_space,
1700 method->klass->name, method->name, image->name, token);
1701 mono_loader_unlock ();
1706 result = mono_class_inflate_generic_method (result, method_context);
1708 mono_loader_unlock ();
1713 mono_free_method (MonoMethod *method)
1715 if (mono_profiler_get_events () & MONO_PROFILE_METHOD_EVENTS)
1716 mono_profiler_method_free (method);
1718 /* FIXME: This hack will go away when the profiler will support freeing methods */
1719 if (mono_profiler_get_events () != MONO_PROFILE_NONE)
1722 if (method->signature) {
1724 * FIXME: This causes crashes because the types inside signatures and
1725 * locals are shared.
1727 /* mono_metadata_free_method_signature (method->signature); */
1728 /* g_free (method->signature); */
1731 if (method->dynamic) {
1732 MonoMethodWrapper *mw = (MonoMethodWrapper*)method;
1735 mono_marshal_free_dynamic_wrappers (method);
1737 mono_image_property_remove (method->klass->image, method);
1739 g_free ((char*)method->name);
1740 if (mw->method.header) {
1741 g_free ((char*)mw->method.header->code);
1742 for (i = 0; i < mw->method.header->num_locals; ++i)
1743 g_free (mw->method.header->locals [i]);
1744 g_free (mw->method.header->clauses);
1745 g_free (mw->method.header);
1747 g_free (mw->method_data);
1748 g_free (method->signature);
1754 mono_method_get_param_names (MonoMethod *method, const char **names)
1758 MonoTableInfo *methodt;
1759 MonoTableInfo *paramt;
1760 MonoMethodSignature *signature;
1763 if (method->is_inflated)
1764 method = ((MonoMethodInflated *) method)->declaring;
1766 signature = mono_method_signature (method);
1767 /*FIXME this check is somewhat redundant since the caller usally will have to get the signature to figure out the
1768 number of arguments and allocate a properly sized array. */
1769 if (signature == NULL)
1772 if (!signature->param_count)
1775 for (i = 0; i < signature->param_count; ++i)
1778 klass = method->klass;
1782 mono_class_init (klass);
1784 if (klass->image->dynamic) {
1785 MonoReflectionMethodAux *method_aux =
1786 g_hash_table_lookup (
1787 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
1788 if (method_aux && method_aux->param_names) {
1789 for (i = 0; i < mono_method_signature (method)->param_count; ++i)
1790 if (method_aux->param_names [i + 1])
1791 names [i] = method_aux->param_names [i + 1];
1796 methodt = &klass->image->tables [MONO_TABLE_METHOD];
1797 paramt = &klass->image->tables [MONO_TABLE_PARAM];
1798 idx = mono_method_get_index (method);
1800 guint32 cols [MONO_PARAM_SIZE];
1803 param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
1805 if (idx < methodt->rows)
1806 lastp = mono_metadata_decode_row_col (methodt, idx, MONO_METHOD_PARAMLIST);
1808 lastp = paramt->rows + 1;
1809 for (i = param_index; i < lastp; ++i) {
1810 mono_metadata_decode_row (paramt, i -1, cols, MONO_PARAM_SIZE);
1811 if (cols [MONO_PARAM_SEQUENCE] && cols [MONO_PARAM_SEQUENCE] <= signature->param_count) /* skip return param spec and bounds check*/
1812 names [cols [MONO_PARAM_SEQUENCE] - 1] = mono_metadata_string_heap (klass->image, cols [MONO_PARAM_NAME]);
1818 mono_method_get_param_token (MonoMethod *method, int index)
1820 MonoClass *klass = method->klass;
1821 MonoTableInfo *methodt;
1824 mono_class_init (klass);
1826 if (klass->image->dynamic) {
1827 g_assert_not_reached ();
1830 methodt = &klass->image->tables [MONO_TABLE_METHOD];
1831 idx = mono_method_get_index (method);
1833 guint param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
1837 return mono_metadata_make_token (MONO_TABLE_PARAM, 0);
1839 return mono_metadata_make_token (MONO_TABLE_PARAM, param_index + index);
1846 mono_method_get_marshal_info (MonoMethod *method, MonoMarshalSpec **mspecs)
1849 MonoClass *klass = method->klass;
1850 MonoTableInfo *methodt;
1851 MonoTableInfo *paramt;
1852 MonoMethodSignature *signature;
1855 signature = mono_method_signature (method);
1856 g_assert (signature); /*FIXME there is no way to signal error from this function*/
1858 for (i = 0; i < signature->param_count + 1; ++i)
1861 if (method->klass->image->dynamic) {
1862 MonoReflectionMethodAux *method_aux =
1863 g_hash_table_lookup (
1864 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
1865 if (method_aux && method_aux->param_marshall) {
1866 MonoMarshalSpec **dyn_specs = method_aux->param_marshall;
1867 for (i = 0; i < signature->param_count + 1; ++i)
1868 if (dyn_specs [i]) {
1869 mspecs [i] = g_new0 (MonoMarshalSpec, 1);
1870 memcpy (mspecs [i], dyn_specs [i], sizeof (MonoMarshalSpec));
1876 mono_class_init (klass);
1878 methodt = &klass->image->tables [MONO_TABLE_METHOD];
1879 paramt = &klass->image->tables [MONO_TABLE_PARAM];
1880 idx = mono_method_get_index (method);
1882 guint32 cols [MONO_PARAM_SIZE];
1883 guint param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
1885 if (idx < methodt->rows)
1886 lastp = mono_metadata_decode_row_col (methodt, idx, MONO_METHOD_PARAMLIST);
1888 lastp = paramt->rows + 1;
1890 for (i = param_index; i < lastp; ++i) {
1891 mono_metadata_decode_row (paramt, i -1, cols, MONO_PARAM_SIZE);
1893 if (cols [MONO_PARAM_FLAGS] & PARAM_ATTRIBUTE_HAS_FIELD_MARSHAL && cols [MONO_PARAM_SEQUENCE] <= signature->param_count) {
1895 tp = mono_metadata_get_marshal_info (klass->image, i - 1, FALSE);
1897 mspecs [cols [MONO_PARAM_SEQUENCE]]= mono_metadata_parse_marshal_spec (klass->image, tp);
1906 mono_method_has_marshal_info (MonoMethod *method)
1909 MonoClass *klass = method->klass;
1910 MonoTableInfo *methodt;
1911 MonoTableInfo *paramt;
1914 if (method->klass->image->dynamic) {
1915 MonoReflectionMethodAux *method_aux =
1916 g_hash_table_lookup (
1917 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
1918 MonoMarshalSpec **dyn_specs = method_aux->param_marshall;
1920 for (i = 0; i < mono_method_signature (method)->param_count + 1; ++i)
1927 mono_class_init (klass);
1929 methodt = &klass->image->tables [MONO_TABLE_METHOD];
1930 paramt = &klass->image->tables [MONO_TABLE_PARAM];
1931 idx = mono_method_get_index (method);
1933 guint32 cols [MONO_PARAM_SIZE];
1934 guint param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
1936 if (idx + 1 < methodt->rows)
1937 lastp = mono_metadata_decode_row_col (methodt, idx, MONO_METHOD_PARAMLIST);
1939 lastp = paramt->rows + 1;
1941 for (i = param_index; i < lastp; ++i) {
1942 mono_metadata_decode_row (paramt, i -1, cols, MONO_PARAM_SIZE);
1944 if (cols [MONO_PARAM_FLAGS] & PARAM_ATTRIBUTE_HAS_FIELD_MARSHAL)
1953 mono_method_get_wrapper_data (MonoMethod *method, guint32 id)
1956 g_assert (method != NULL);
1957 g_assert (method->wrapper_type != MONO_WRAPPER_NONE);
1959 if (method->is_inflated)
1960 method = ((MonoMethodInflated *) method)->declaring;
1961 data = ((MonoMethodWrapper *)method)->method_data;
1962 g_assert (data != NULL);
1963 g_assert (id <= GPOINTER_TO_UINT (*data));
1968 default_stack_walk (MonoStackWalk func, gboolean do_il_offset, gpointer user_data) {
1969 g_error ("stack walk not installed");
1972 static MonoStackWalkImpl stack_walk = default_stack_walk;
1975 mono_stack_walk (MonoStackWalk func, gpointer user_data)
1977 stack_walk (func, TRUE, user_data);
1981 mono_stack_walk_no_il (MonoStackWalk func, gpointer user_data)
1983 stack_walk (func, FALSE, user_data);
1987 mono_install_stack_walk (MonoStackWalkImpl func)
1993 last_managed (MonoMethod *m, gint no, gint ilo, gboolean managed, gpointer data)
1995 MonoMethod **dest = data;
1997 /*g_print ("In %s::%s [%d] [%d]\n", m->klass->name, m->name, no, ilo);*/
2003 mono_method_get_last_managed (void)
2005 MonoMethod *m = NULL;
2006 stack_walk (last_managed, FALSE, &m);
2010 static gboolean loader_lock_track_ownership = FALSE;
2015 * See docs/thread-safety.txt for the locking strategy.
2018 mono_loader_lock (void)
2020 mono_locks_acquire (&loader_mutex, LoaderLock);
2021 if (G_UNLIKELY (loader_lock_track_ownership)) {
2022 TlsSetValue (loader_lock_nest_id, GUINT_TO_POINTER (GPOINTER_TO_UINT (TlsGetValue (loader_lock_nest_id)) + 1));
2027 mono_loader_unlock (void)
2029 mono_locks_release (&loader_mutex, LoaderLock);
2030 if (G_UNLIKELY (loader_lock_track_ownership)) {
2031 TlsSetValue (loader_lock_nest_id, GUINT_TO_POINTER (GPOINTER_TO_UINT (TlsGetValue (loader_lock_nest_id)) - 1));
2036 * mono_loader_lock_track_ownership:
2038 * Set whenever the runtime should track ownership of the loader lock. If set to TRUE,
2039 * the mono_loader_lock_is_owned_by_self () can be called to query whenever the current
2040 * thread owns the loader lock.
2043 mono_loader_lock_track_ownership (gboolean track)
2045 loader_lock_track_ownership = track;
2049 * mono_loader_lock_is_owned_by_self:
2051 * Return whenever the current thread owns the loader lock.
2052 * This is useful to avoid blocking operations while holding the loader lock.
2055 mono_loader_lock_is_owned_by_self (void)
2057 g_assert (loader_lock_track_ownership);
2059 return GPOINTER_TO_UINT (TlsGetValue (loader_lock_nest_id)) > 0;
2063 * mono_method_signature:
2065 * Return the signature of the method M. On failure, returns NULL, and ERR is set.
2067 MonoMethodSignature*
2068 mono_method_signature_checked (MonoMethod *m, MonoError *err)
2074 gboolean can_cache_signature;
2075 MonoGenericContainer *container;
2076 MonoMethodSignature *signature = NULL;
2079 /* We need memory barriers below because of the double-checked locking pattern */
2082 return m->signature;
2084 mono_loader_lock ();
2087 mono_loader_unlock ();
2088 return m->signature;
2091 if (m->is_inflated) {
2092 MonoMethodInflated *imethod = (MonoMethodInflated *) m;
2093 /* the lock is recursive */
2094 signature = mono_method_signature (imethod->declaring);
2095 signature = inflate_generic_signature (imethod->declaring->klass->image, signature, mono_method_get_context (m));
2097 inflated_signatures_size += mono_metadata_signature_size (signature);
2099 mono_memory_barrier ();
2100 m->signature = signature;
2101 mono_loader_unlock ();
2102 return m->signature;
2105 g_assert (mono_metadata_token_table (m->token) == MONO_TABLE_METHOD);
2106 idx = mono_metadata_token_index (m->token);
2107 img = m->klass->image;
2109 sig = mono_metadata_blob_heap (img, sig_offset = mono_metadata_decode_row_col (&img->tables [MONO_TABLE_METHOD], idx - 1, MONO_METHOD_SIGNATURE));
2111 g_assert (!m->klass->generic_class);
2112 container = mono_method_get_generic_container (m);
2114 container = m->klass->generic_container;
2116 /* Generic signatures depend on the container so they cannot be cached */
2117 /* icall/pinvoke signatures cannot be cached cause we modify them below */
2118 can_cache_signature = !(m->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && !(m->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) && !container;
2120 /* If the method has parameter attributes, that can modify the signature */
2121 if (mono_metadata_method_has_param_attrs (img, idx))
2122 can_cache_signature = FALSE;
2124 if (can_cache_signature)
2125 signature = g_hash_table_lookup (img->method_signatures, sig);
2128 const char *sig_body;
2129 /*TODO we should cache the failure result somewhere*/
2130 if (!mono_verifier_verify_method_signature (img, sig_offset, NULL)) {
2131 mono_loader_unlock ();
2132 mono_error_set_method_load (err, m->klass, m->name, "");
2136 size = mono_metadata_decode_blob_size (sig, &sig_body);
2138 signature = mono_metadata_parse_method_signature_full (img, container, idx, sig_body, NULL);
2140 mono_loader_unlock ();
2141 mono_error_set_method_load (err, m->klass, m->name, "");
2145 if (can_cache_signature)
2146 g_hash_table_insert (img->method_signatures, (gpointer)sig, signature);
2149 /* Verify metadata consistency */
2150 if (signature->generic_param_count) {
2151 if (!container || !container->is_method) {
2152 mono_loader_unlock ();
2153 mono_error_set_method_load (err, 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);
2156 if (container->type_argc != signature->generic_param_count) {
2157 mono_loader_unlock ();
2158 mono_error_set_method_load (err, 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);
2161 } else if (container && container->is_method && container->type_argc) {
2162 mono_loader_unlock ();
2163 mono_error_set_method_load (err, 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);
2166 if (m->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL)
2167 signature->pinvoke = 1;
2168 else if (m->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) {
2169 MonoCallConvention conv = 0;
2170 MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *)m;
2171 signature->pinvoke = 1;
2173 switch (piinfo->piflags & PINVOKE_ATTRIBUTE_CALL_CONV_MASK) {
2174 case 0: /* no call conv, so using default */
2175 case PINVOKE_ATTRIBUTE_CALL_CONV_WINAPI:
2176 conv = MONO_CALL_DEFAULT;
2178 case PINVOKE_ATTRIBUTE_CALL_CONV_CDECL:
2181 case PINVOKE_ATTRIBUTE_CALL_CONV_STDCALL:
2182 conv = MONO_CALL_STDCALL;
2184 case PINVOKE_ATTRIBUTE_CALL_CONV_THISCALL:
2185 conv = MONO_CALL_THISCALL;
2187 case PINVOKE_ATTRIBUTE_CALL_CONV_FASTCALL:
2188 conv = MONO_CALL_FASTCALL;
2190 case PINVOKE_ATTRIBUTE_CALL_CONV_GENERIC:
2191 case PINVOKE_ATTRIBUTE_CALL_CONV_GENERICINST:
2193 mono_loader_unlock ();
2194 mono_error_set_method_load (err, m->klass, m->name, "unsupported calling convention : 0x%04x for method 0x%08x from image %s", piinfo->piflags, idx, img->name);
2197 signature->call_convention = conv;
2200 mono_memory_barrier ();
2201 m->signature = signature;
2203 mono_loader_unlock ();
2204 return m->signature;
2208 * mono_method_signature:
2210 * Return the signature of the method M. On failure, returns NULL.
2212 MonoMethodSignature*
2213 mono_method_signature (MonoMethod *m)
2216 MonoMethodSignature *sig;
2218 mono_error_init (&err);
2220 sig = mono_method_signature_checked (m, &err);
2222 g_warning ("Could not load signature due to: %s", mono_error_get_message (&err));
2223 mono_error_cleanup (&err);
2230 mono_method_get_name (MonoMethod *method)
2232 return method->name;
2236 mono_method_get_class (MonoMethod *method)
2238 return method->klass;
2242 mono_method_get_token (MonoMethod *method)
2244 return method->token;
2248 mono_method_get_header (MonoMethod *method)
2254 MonoMethodNormal* mn = (MonoMethodNormal*) method;
2255 MonoMethodHeader *header;
2257 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))
2261 if (G_LIKELY (mn->header))
2267 if (method->is_inflated) {
2268 MonoMethodInflated *imethod = (MonoMethodInflated *) method;
2269 MonoMethodHeader *header;
2271 header = mono_method_get_header (imethod->declaring);
2273 mono_loader_lock ();
2276 mono_loader_unlock ();
2280 mn->header = inflate_generic_header (header, mono_method_get_context (method));
2281 mono_loader_unlock ();
2286 * Do most of the work outside the loader lock, to avoid assembly loader hook
2289 g_assert (mono_metadata_token_table (method->token) == MONO_TABLE_METHOD);
2290 idx = mono_metadata_token_index (method->token);
2291 img = method->klass->image;
2292 rva = mono_metadata_decode_row_col (&img->tables [MONO_TABLE_METHOD], idx - 1, MONO_METHOD_RVA);
2294 if (!mono_verifier_verify_method_header (img, rva, NULL))
2297 loc = mono_image_rva_map (img, rva);
2300 header = mono_metadata_parse_mh_full (img, mono_method_get_generic_container (method), loc);
2302 mono_loader_lock ();
2305 /* header is allocated from the image mempool, no need to free it */
2306 mono_loader_unlock ();
2310 mono_memory_barrier ();
2312 mn->header = header;
2314 mono_loader_unlock ();
2319 mono_method_get_flags (MonoMethod *method, guint32 *iflags)
2322 *iflags = method->iflags;
2323 return method->flags;
2327 * Find the method index in the metadata methodDef table.
2330 mono_method_get_index (MonoMethod *method) {
2331 MonoClass *klass = method->klass;
2335 return mono_metadata_token_index (method->token);
2337 mono_class_setup_methods (klass);
2338 if (klass->exception_type)
2340 for (i = 0; i < klass->method.count; ++i) {
2341 if (method == klass->methods [i]) {
2342 if (klass->image->uncompressed_metadata)
2343 return mono_metadata_translate_token_index (klass->image, MONO_TABLE_METHOD, klass->method.first + i + 1);
2345 return klass->method.first + i + 1;