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 mono_mutex_t 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 mono_mutex_init_recursive (&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 mono_mutex_destroy (&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_loader_clear_error ();
133 mono_native_tls_set_value (loader_error_thread_id, error);
137 * mono_loader_set_error_assembly_load:
139 * Set the loader error for this thread.
142 mono_loader_set_error_assembly_load (const char *assembly_name, gboolean ref_only)
144 MonoLoaderError *error;
146 if (mono_loader_get_last_error ())
149 error = g_new0 (MonoLoaderError, 1);
150 error->exception_type = MONO_EXCEPTION_FILE_NOT_FOUND;
151 error->assembly_name = g_strdup (assembly_name);
152 error->ref_only = ref_only;
155 * This is not strictly needed, but some (most) of the loader code still
156 * can't deal with load errors, and this message is more helpful than an
160 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);
162 mono_trace (G_LOG_LEVEL_WARNING, MONO_TRACE_ASSEMBLY, "Could not load file or assembly '%s' or one of its dependencies.", assembly_name);
164 set_loader_error (error);
168 * mono_loader_set_error_type_load:
170 * Set the loader error for this thread.
173 mono_loader_set_error_type_load (const char *class_name, const char *assembly_name)
175 MonoLoaderError *error;
177 if (mono_loader_get_last_error ())
180 error = g_new0 (MonoLoaderError, 1);
181 error->exception_type = MONO_EXCEPTION_TYPE_LOAD;
182 error->class_name = g_strdup (class_name);
183 error->assembly_name = g_strdup (assembly_name);
186 * This is not strictly needed, but some (most) of the loader code still
187 * can't deal with load errors, and this message is more helpful than an
190 mono_trace_warning (MONO_TRACE_TYPE, "The class %s could not be loaded, used in %s", class_name, assembly_name);
192 set_loader_error (error);
196 * mono_loader_set_error_method_load:
198 * Set the loader error for this thread. MEMBER_NAME should point to a string
202 mono_loader_set_error_method_load (const char *class_name, const char *member_name)
204 MonoLoaderError *error;
206 /* FIXME: Store the signature as well */
207 if (mono_loader_get_last_error ())
210 error = g_new0 (MonoLoaderError, 1);
211 error->exception_type = MONO_EXCEPTION_MISSING_METHOD;
212 error->class_name = g_strdup (class_name);
213 error->member_name = member_name;
215 set_loader_error (error);
219 * mono_loader_set_error_field_load:
221 * Set the loader error for this thread. MEMBER_NAME should point to a string
225 mono_loader_set_error_field_load (MonoClass *klass, const char *member_name)
227 MonoLoaderError *error;
229 /* FIXME: Store the signature as well */
230 if (mono_loader_get_last_error ())
233 error = g_new0 (MonoLoaderError, 1);
234 error->exception_type = MONO_EXCEPTION_MISSING_FIELD;
235 error->klass = klass;
236 error->member_name = member_name;
238 set_loader_error (error);
242 * mono_loader_set_error_bad_image:
244 * Set the loader error for this thread.
247 mono_loader_set_error_bad_image (char *msg)
249 MonoLoaderError *error;
251 if (mono_loader_get_last_error ())
254 error = g_new0 (MonoLoaderError, 1);
255 error->exception_type = MONO_EXCEPTION_BAD_IMAGE;
258 set_loader_error (error);
263 * mono_loader_get_last_error:
265 * Returns information about the last type load exception encountered by the loader, or
266 * NULL. After use, the exception should be cleared by calling mono_loader_clear_error.
269 mono_loader_get_last_error (void)
271 return (MonoLoaderError*)mono_native_tls_get_value (loader_error_thread_id);
275 * mono_loader_clear_error:
277 * Disposes any loader error messages on this thread
280 mono_loader_clear_error (void)
282 MonoLoaderError *ex = (MonoLoaderError*)mono_native_tls_get_value (loader_error_thread_id);
285 g_free (ex->class_name);
286 g_free (ex->assembly_name);
290 mono_native_tls_set_value (loader_error_thread_id, NULL);
295 * mono_loader_error_prepare_exception:
296 * @error: The MonoLoaderError to turn into an exception
298 * This turns a MonoLoaderError into an exception that can be thrown
299 * and resets the Mono Loader Error state during this process.
303 mono_loader_error_prepare_exception (MonoLoaderError *error)
305 MonoException *ex = NULL;
307 switch (error->exception_type) {
308 case MONO_EXCEPTION_TYPE_LOAD: {
309 char *cname = g_strdup (error->class_name);
310 char *aname = g_strdup (error->assembly_name);
311 MonoString *class_name;
313 mono_loader_clear_error ();
315 class_name = mono_string_new (mono_domain_get (), cname);
317 ex = mono_get_exception_type_load (class_name, aname);
322 case MONO_EXCEPTION_MISSING_METHOD: {
323 char *cname = g_strdup (error->class_name);
324 char *aname = g_strdup (error->member_name);
326 mono_loader_clear_error ();
327 ex = mono_get_exception_missing_method (cname, aname);
333 case MONO_EXCEPTION_MISSING_FIELD: {
335 char *cmembername = g_strdup (error->member_name);
337 class_name = mono_type_get_full_name (error->klass);
339 class_name = g_strdup ("");
341 mono_loader_clear_error ();
343 ex = mono_get_exception_missing_field (class_name, cmembername);
345 g_free (cmembername);
349 case MONO_EXCEPTION_FILE_NOT_FOUND: {
354 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);
356 msg = g_strdup_printf ("Could not load file or assembly '%s' or one of its dependencies.", error->assembly_name);
357 filename = g_strdup (error->assembly_name);
358 /* Has to call this before calling anything which might call mono_class_init () */
359 mono_loader_clear_error ();
360 ex = mono_get_exception_file_not_found2 (msg, mono_string_new (mono_domain_get (), filename));
366 case MONO_EXCEPTION_BAD_IMAGE: {
367 char *msg = g_strdup (error->msg);
368 mono_loader_clear_error ();
369 ex = mono_get_exception_bad_image_format (msg);
375 g_assert_not_reached ();
382 * find_cached_memberref_sig:
384 * Return a cached copy of the memberref signature identified by SIG_IDX.
385 * We use a gpointer since the cache stores both MonoTypes and MonoMethodSignatures.
386 * A cache is needed since the type/signature parsing routines allocate everything
387 * from a mempool, so without a cache, multiple requests for the same signature would
388 * lead to unbounded memory growth. For normal methods/fields this is not a problem
389 * since the resulting methods/fields are cached, but inflated methods/fields cannot
391 * LOCKING: Acquires the loader lock.
394 find_cached_memberref_sig (MonoImage *image, guint32 sig_idx)
399 res = g_hash_table_lookup (image->memberref_signatures, GUINT_TO_POINTER (sig_idx));
400 mono_loader_unlock ();
406 cache_memberref_sig (MonoImage *image, guint32 sig_idx, gpointer sig)
411 prev_sig = g_hash_table_lookup (image->memberref_signatures, GUINT_TO_POINTER (sig_idx));
413 /* Somebody got in before us */
417 g_hash_table_insert (image->memberref_signatures, GUINT_TO_POINTER (sig_idx), sig);
418 /* An approximation based on glib 2.18 */
419 memberref_sig_cache_size += sizeof (gpointer) * 4;
422 mono_loader_unlock ();
427 static MonoClassField*
428 field_from_memberref (MonoImage *image, guint32 token, MonoClass **retklass,
429 MonoGenericContext *context)
432 MonoClassField *field;
433 MonoTableInfo *tables = image->tables;
436 guint32 nindex, class, class_table;
439 guint32 idx = mono_metadata_token_index (token);
441 mono_metadata_decode_row (&tables [MONO_TABLE_MEMBERREF], idx-1, cols, MONO_MEMBERREF_SIZE);
442 nindex = cols [MONO_MEMBERREF_CLASS] >> MONO_MEMBERREF_PARENT_BITS;
443 class = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
445 fname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
447 if (!mono_verifier_verify_memberref_field_signature (image, cols [MONO_MEMBERREF_SIGNATURE], NULL)) {
448 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));
453 case MONO_MEMBERREF_PARENT_TYPEDEF:
454 class_table = MONO_TOKEN_TYPE_DEF;
455 klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF | nindex);
457 case MONO_MEMBERREF_PARENT_TYPEREF:
458 class_table = MONO_TOKEN_TYPE_REF;
459 klass = mono_class_from_typeref (image, MONO_TOKEN_TYPE_REF | nindex);
461 case MONO_MEMBERREF_PARENT_TYPESPEC:
462 class_table = MONO_TOKEN_TYPE_SPEC;
463 klass = mono_class_get_full (image, MONO_TOKEN_TYPE_SPEC | nindex, context);
466 /*FIXME this must set a loader error!*/
467 g_warning ("field load from %x", class);
472 char *name = mono_class_name_from_token (image, class_table | nindex);
473 g_warning ("Missing field %s in class %s (type token %d)", fname, name, class_table | nindex);
474 mono_loader_set_error_type_load (name, image->assembly_name);
479 ptr = mono_metadata_blob_heap (image, cols [MONO_MEMBERREF_SIGNATURE]);
480 mono_metadata_decode_blob_size (ptr, &ptr);
481 /* we may want to check the signature here... */
484 g_warning ("Bad field signature class token %08x field name %s token %08x", class, fname, token);
485 mono_loader_set_error_field_load (klass, fname);
488 /* FIXME: This needs a cache, especially for generic instances, since
489 * mono_metadata_parse_type () allocates everything from a mempool.
491 sig_type = find_cached_memberref_sig (image, cols [MONO_MEMBERREF_SIGNATURE]);
493 sig_type = mono_metadata_parse_type (image, MONO_PARSE_TYPE, 0, ptr, &ptr);
494 if (sig_type == NULL) {
495 mono_loader_set_error_field_load (klass, fname);
498 sig_type = cache_memberref_sig (image, cols [MONO_MEMBERREF_SIGNATURE], sig_type);
501 mono_class_init (klass); /*FIXME is this really necessary?*/
504 field = mono_class_get_field_from_name_full (klass, fname, sig_type);
507 mono_loader_set_error_field_load (klass, fname);
513 mono_field_from_token (MonoImage *image, guint32 token, MonoClass **retklass,
514 MonoGenericContext *context)
518 MonoClassField *field;
520 if (image_is_dynamic (image)) {
521 MonoClassField *result;
522 MonoClass *handle_class;
525 result = mono_lookup_dynamic_token_class (image, token, TRUE, &handle_class, context);
526 // This checks the memberref type as well
527 if (!result || handle_class != mono_defaults.fieldhandle_class) {
528 mono_loader_set_error_bad_image (g_strdup_printf ("Bad field token 0x%08x on image %s.", token, image->name));
531 *retklass = result->parent;
535 if ((field = mono_conc_hashtable_lookup (image->field_cache, GUINT_TO_POINTER (token)))) {
536 *retklass = field->parent;
540 if (mono_metadata_token_table (token) == MONO_TABLE_MEMBERREF)
541 field = field_from_memberref (image, token, retklass, context);
543 type = mono_metadata_typedef_from_field (image, mono_metadata_token_index (token));
546 k = mono_class_get (image, MONO_TOKEN_TYPE_DEF | type);
552 field = mono_class_get_field (k, token);
555 if (field && field->parent && !field->parent->generic_class && !field->parent->generic_container)
556 mono_conc_hashtable_insert (image->field_cache, GUINT_TO_POINTER (token), field);
562 mono_metadata_signature_vararg_match (MonoMethodSignature *sig1, MonoMethodSignature *sig2)
566 if (sig1->hasthis != sig2->hasthis ||
567 sig1->sentinelpos != sig2->sentinelpos)
570 for (i = 0; i < sig1->sentinelpos; i++) {
571 MonoType *p1 = sig1->params[i];
572 MonoType *p2 = sig2->params[i];
574 /*if (p1->attrs != p2->attrs)
577 if (!mono_metadata_type_equal (p1, p2))
581 if (!mono_metadata_type_equal (sig1->ret, sig2->ret))
587 find_method_in_class (MonoClass *klass, const char *name, const char *qname, const char *fqname,
588 MonoMethodSignature *sig, MonoClass *from_class)
592 /* Search directly in the metadata to avoid calling setup_methods () */
594 /* FIXME: !from_class->generic_class condition causes test failures. */
595 if (klass->type_token && !image_is_dynamic (klass->image) && !klass->methods && !klass->rank && klass == from_class && !from_class->generic_class) {
596 for (i = 0; i < klass->method.count; ++i) {
597 guint32 cols [MONO_METHOD_SIZE];
600 MonoMethodSignature *other_sig;
602 mono_metadata_decode_table_row (klass->image, MONO_TABLE_METHOD, klass->method.first + i, cols, MONO_METHOD_SIZE);
604 m_name = mono_metadata_string_heap (klass->image, cols [MONO_METHOD_NAME]);
606 if (!((fqname && !strcmp (m_name, fqname)) ||
607 (qname && !strcmp (m_name, qname)) ||
608 (name && !strcmp (m_name, name))))
611 method = mono_get_method (klass->image, MONO_TOKEN_METHOD_DEF | (klass->method.first + i + 1), klass);
613 other_sig = mono_method_signature (method);
614 if (other_sig && (sig->call_convention != MONO_CALL_VARARG) && mono_metadata_signature_equal (sig, other_sig))
620 mono_class_setup_methods (klass);
622 We can't fail lookup of methods otherwise the runtime will fail with MissingMethodException instead of TypeLoadException.
623 See mono/tests/generic-type-load-exception.2.il
624 FIXME we should better report this error to the caller
628 for (i = 0; i < klass->method.count; ++i) {
629 MonoMethod *m = klass->methods [i];
630 MonoMethodSignature *msig;
632 /* We must cope with failing to load some of the types. */
636 if (!((fqname && !strcmp (m->name, fqname)) ||
637 (qname && !strcmp (m->name, qname)) ||
638 (name && !strcmp (m->name, name))))
640 msig = mono_method_signature (m);
644 if (sig->call_convention == MONO_CALL_VARARG) {
645 if (mono_metadata_signature_vararg_match (sig, msig))
648 if (mono_metadata_signature_equal (sig, msig))
653 if (i < klass->method.count)
654 return mono_class_get_method_by_index (from_class, i);
659 find_method (MonoClass *in_class, MonoClass *ic, const char* name, MonoMethodSignature *sig, MonoClass *from_class)
662 char *qname, *fqname, *class_name;
663 gboolean is_interface;
664 MonoMethod *result = NULL;
666 is_interface = MONO_CLASS_IS_INTERFACE (in_class);
669 class_name = mono_type_get_name_full (&ic->byval_arg, MONO_TYPE_NAME_FORMAT_IL);
671 qname = g_strconcat (class_name, ".", name, NULL);
672 if (ic->name_space && ic->name_space [0])
673 fqname = g_strconcat (ic->name_space, ".", class_name, ".", name, NULL);
677 class_name = qname = fqname = NULL;
680 g_assert (from_class);
681 result = find_method_in_class (in_class, name, qname, fqname, sig, from_class);
685 if (name [0] == '.' && (!strcmp (name, ".ctor") || !strcmp (name, ".cctor")))
689 * This happens when we fail to lazily load the interfaces of one of the types.
690 * On such case we can't just bail out since user code depends on us trying harder.
692 if (from_class->interface_offsets_count != in_class->interface_offsets_count) {
693 in_class = in_class->parent;
694 from_class = from_class->parent;
698 for (i = 0; i < in_class->interface_offsets_count; i++) {
699 MonoClass *in_ic = in_class->interfaces_packed [i];
700 MonoClass *from_ic = from_class->interfaces_packed [i];
701 char *ic_qname, *ic_fqname, *ic_class_name;
703 ic_class_name = mono_type_get_name_full (&in_ic->byval_arg, MONO_TYPE_NAME_FORMAT_IL);
704 ic_qname = g_strconcat (ic_class_name, ".", name, NULL);
705 if (in_ic->name_space && in_ic->name_space [0])
706 ic_fqname = g_strconcat (in_ic->name_space, ".", ic_class_name, ".", name, NULL);
710 result = find_method_in_class (in_ic, ic ? name : NULL, ic_qname, ic_fqname, sig, from_ic);
711 g_free (ic_class_name);
718 in_class = in_class->parent;
719 from_class = from_class->parent;
721 g_assert (!in_class == !from_class);
724 result = find_method_in_class (mono_defaults.object_class, name, qname, fqname, sig, mono_defaults.object_class);
733 static MonoMethodSignature*
734 inflate_generic_signature_checked (MonoImage *image, MonoMethodSignature *sig, MonoGenericContext *context, MonoError *error)
736 MonoMethodSignature *res;
740 mono_error_init (error);
744 res = g_malloc0 (MONO_SIZEOF_METHOD_SIGNATURE + ((gint32)sig->param_count) * sizeof (MonoType*));
745 res->param_count = sig->param_count;
746 res->sentinelpos = -1;
747 res->ret = mono_class_inflate_generic_type_checked (sig->ret, context, error);
748 if (!mono_error_ok (error))
750 is_open = mono_class_is_open_constructed_type (res->ret);
751 for (i = 0; i < sig->param_count; ++i) {
752 res->params [i] = mono_class_inflate_generic_type_checked (sig->params [i], context, error);
753 if (!mono_error_ok (error))
757 is_open = mono_class_is_open_constructed_type (res->params [i]);
759 res->hasthis = sig->hasthis;
760 res->explicit_this = sig->explicit_this;
761 res->call_convention = sig->call_convention;
762 res->pinvoke = sig->pinvoke;
763 res->generic_param_count = sig->generic_param_count;
764 res->sentinelpos = sig->sentinelpos;
765 res->has_type_parameters = is_open;
766 res->is_inflated = 1;
771 mono_metadata_free_type (res->ret);
772 for (i = 0; i < sig->param_count; ++i) {
774 mono_metadata_free_type (res->params [i]);
781 * mono_inflate_generic_signature:
783 * Inflate SIG with CONTEXT, and return a canonical copy. On error, set ERROR, and return NULL.
786 mono_inflate_generic_signature (MonoMethodSignature *sig, MonoGenericContext *context, MonoError *error)
788 MonoMethodSignature *res, *cached;
790 res = inflate_generic_signature_checked (NULL, sig, context, error);
791 if (!mono_error_ok (error))
793 cached = mono_metadata_get_inflated_signature (res, context);
795 mono_metadata_free_inflated_signature (res);
799 static MonoMethodHeader*
800 inflate_generic_header (MonoMethodHeader *header, MonoGenericContext *context)
802 MonoMethodHeader *res;
804 res = g_malloc0 (MONO_SIZEOF_METHOD_HEADER + sizeof (gpointer) * header->num_locals);
805 res->code = header->code;
806 res->code_size = header->code_size;
807 res->max_stack = header->max_stack;
808 res->num_clauses = header->num_clauses;
809 res->init_locals = header->init_locals;
810 res->num_locals = header->num_locals;
811 res->clauses = header->clauses;
812 for (i = 0; i < header->num_locals; ++i)
813 res->locals [i] = mono_class_inflate_generic_type (header->locals [i], context);
814 if (res->num_clauses) {
815 res->clauses = g_memdup (header->clauses, sizeof (MonoExceptionClause) * res->num_clauses);
816 for (i = 0; i < header->num_clauses; ++i) {
817 MonoExceptionClause *clause = &res->clauses [i];
818 if (clause->flags != MONO_EXCEPTION_CLAUSE_NONE)
820 clause->data.catch_class = mono_class_inflate_generic_class (clause->data.catch_class, context);
827 * token is the method_ref/def/spec token used in a call IL instruction.
830 mono_method_get_signature_full (MonoMethod *method, MonoImage *image, guint32 token, MonoGenericContext *context)
832 int table = mono_metadata_token_table (token);
833 int idx = mono_metadata_token_index (token);
835 guint32 cols [MONO_MEMBERREF_SIZE];
836 MonoMethodSignature *sig;
839 /* !table is for wrappers: we should really assign their own token to them */
840 if (!table || table == MONO_TABLE_METHOD)
841 return mono_method_signature (method);
843 if (table == MONO_TABLE_METHODSPEC) {
844 /* the verifier (do_invoke_method) will turn the NULL into a verifier error */
845 if ((method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) || !method->is_inflated)
848 return mono_method_signature (method);
851 if (method->klass->generic_class)
852 return mono_method_signature (method);
854 if (image_is_dynamic (image)) {
855 sig = mono_reflection_lookup_signature (image, method, token);
857 mono_metadata_decode_row (&image->tables [MONO_TABLE_MEMBERREF], idx-1, cols, MONO_MEMBERREF_SIZE);
858 sig_idx = cols [MONO_MEMBERREF_SIGNATURE];
860 sig = find_cached_memberref_sig (image, sig_idx);
862 if (!mono_verifier_verify_memberref_method_signature (image, sig_idx, NULL)) {
863 guint32 class = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
864 const char *fname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
866 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));
870 ptr = mono_metadata_blob_heap (image, sig_idx);
871 mono_metadata_decode_blob_size (ptr, &ptr);
872 sig = mono_metadata_parse_method_signature (image, 0, ptr, NULL);
875 sig = cache_memberref_sig (image, sig_idx, sig);
877 /* FIXME: we probably should verify signature compat in the dynamic case too*/
878 if (!mono_verifier_is_sig_compatible (image, method, sig)) {
879 guint32 class = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
880 const char *fname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
882 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));
889 MonoMethodSignature *cached;
891 /* This signature is not owned by a MonoMethod, so need to cache */
892 sig = inflate_generic_signature_checked (image, sig, context, &error);
893 if (!mono_error_ok (&error)) {/*XXX bubble up this and kill one use of loader errors */
894 mono_loader_set_error_bad_image (g_strdup_printf ("Could not inflate signature %s", mono_error_get_message (&error)));
895 mono_error_cleanup (&error);
899 cached = mono_metadata_get_inflated_signature (sig, context);
901 mono_metadata_free_inflated_signature (sig);
903 inflated_signatures_size += mono_metadata_signature_size (cached);
911 mono_method_get_signature (MonoMethod *method, MonoImage *image, guint32 token)
913 return mono_method_get_signature_full (method, image, token, NULL);
916 /* this is only for the typespec array methods */
918 mono_method_search_in_array_class (MonoClass *klass, const char *name, MonoMethodSignature *sig)
922 mono_class_setup_methods (klass);
923 g_assert (!klass->exception_type); /*FIXME this should not fail, right?*/
924 for (i = 0; i < klass->method.count; ++i) {
925 MonoMethod *method = klass->methods [i];
926 if (strcmp (method->name, name) == 0 && sig->param_count == method->signature->param_count)
933 method_from_memberref (MonoImage *image, guint32 idx, MonoGenericContext *typespec_context,
934 gboolean *used_context)
936 MonoClass *klass = NULL;
937 MonoMethod *method = NULL;
938 MonoTableInfo *tables = image->tables;
940 guint32 nindex, class, sig_idx;
942 MonoMethodSignature *sig;
945 mono_metadata_decode_row (&tables [MONO_TABLE_MEMBERREF], idx-1, cols, 3);
946 nindex = cols [MONO_MEMBERREF_CLASS] >> MONO_MEMBERREF_PARENT_BITS;
947 class = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
948 /*g_print ("methodref: 0x%x 0x%x %s\n", class, nindex,
949 mono_metadata_string_heap (m, cols [MONO_MEMBERREF_NAME]));*/
951 mname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
954 * Whether we actually used the `typespec_context' or not.
955 * This is used to tell our caller whether or not it's safe to insert the returned
956 * method into a cache.
959 *used_context = class == MONO_MEMBERREF_PARENT_TYPESPEC;
962 case MONO_MEMBERREF_PARENT_TYPEREF:
963 klass = mono_class_from_typeref (image, MONO_TOKEN_TYPE_REF | nindex);
965 char *name = mono_class_name_from_token (image, MONO_TOKEN_TYPE_REF | nindex);
966 g_warning ("Missing method %s in assembly %s, type %s", mname, image->name, name);
967 mono_loader_set_error_type_load (name, image->assembly_name);
972 case MONO_MEMBERREF_PARENT_TYPESPEC:
974 * Parse the TYPESPEC in the parent's context.
976 klass = mono_class_get_full (image, MONO_TOKEN_TYPE_SPEC | nindex, typespec_context);
978 char *name = mono_class_name_from_token (image, MONO_TOKEN_TYPE_SPEC | nindex);
979 g_warning ("Missing method %s in assembly %s, type %s", mname, image->name, name);
980 mono_loader_set_error_type_load (name, image->assembly_name);
985 case MONO_MEMBERREF_PARENT_TYPEDEF:
986 klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF | nindex);
988 char *name = mono_class_name_from_token (image, MONO_TOKEN_TYPE_DEF | nindex);
989 g_warning ("Missing method %s in assembly %s, type %s", mname, image->name, name);
990 mono_loader_set_error_type_load (name, image->assembly_name);
995 case MONO_MEMBERREF_PARENT_METHODDEF:
996 return mono_get_method (image, MONO_TOKEN_METHOD_DEF | nindex, NULL);
1000 /* This message leaks */
1001 char *message = g_strdup_printf ("Memberref parent unknown: class: %d, index %d", class, nindex);
1002 mono_loader_set_error_method_load ("", message);
1008 mono_class_init (klass);
1010 sig_idx = cols [MONO_MEMBERREF_SIGNATURE];
1012 if (!mono_verifier_verify_memberref_method_signature (image, sig_idx, NULL)) {
1013 mono_loader_set_error_method_load (klass->name, mname);
1017 ptr = mono_metadata_blob_heap (image, sig_idx);
1018 mono_metadata_decode_blob_size (ptr, &ptr);
1020 sig = find_cached_memberref_sig (image, sig_idx);
1022 sig = mono_metadata_parse_method_signature (image, 0, ptr, NULL);
1026 sig = cache_memberref_sig (image, sig_idx, sig);
1030 case MONO_MEMBERREF_PARENT_TYPEREF:
1031 case MONO_MEMBERREF_PARENT_TYPEDEF:
1032 method = find_method (klass, NULL, mname, sig, klass);
1035 case MONO_MEMBERREF_PARENT_TYPESPEC: {
1038 type = &klass->byval_arg;
1040 if (type->type != MONO_TYPE_ARRAY && type->type != MONO_TYPE_SZARRAY) {
1041 MonoClass *in_class = klass->generic_class ? klass->generic_class->container_class : klass;
1042 method = find_method (in_class, NULL, mname, sig, klass);
1046 /* we're an array and we created these methods already in klass in mono_class_init () */
1047 method = mono_method_search_in_array_class (klass, mname, sig);
1051 g_error ("Memberref parent unknown: class: %d, index %d", class, nindex);
1052 g_assert_not_reached ();
1056 char *msig = mono_signature_get_desc (sig, FALSE);
1057 char * class_name = mono_type_get_name (&klass->byval_arg);
1058 GString *s = g_string_new (mname);
1059 if (sig->generic_param_count)
1060 g_string_append_printf (s, "<[%d]>", sig->generic_param_count);
1061 g_string_append_printf (s, "(%s)", msig);
1063 msig = g_string_free (s, FALSE);
1066 "Missing method %s::%s in assembly %s, referenced in assembly %s",
1067 class_name, msig, klass->image->name, image->name);
1068 mono_loader_set_error_method_load (class_name, mname);
1070 g_free (class_name);
1077 method_from_methodspec (MonoImage *image, MonoGenericContext *context, guint32 idx)
1082 MonoTableInfo *tables = image->tables;
1083 MonoGenericContext new_context;
1084 MonoGenericInst *inst;
1086 guint32 cols [MONO_METHODSPEC_SIZE];
1087 guint32 token, nindex, param_count;
1089 mono_metadata_decode_row (&tables [MONO_TABLE_METHODSPEC], idx - 1, cols, MONO_METHODSPEC_SIZE);
1090 token = cols [MONO_METHODSPEC_METHOD];
1091 nindex = token >> MONO_METHODDEFORREF_BITS;
1093 if (!mono_verifier_verify_methodspec_signature (image, cols [MONO_METHODSPEC_SIGNATURE], NULL))
1096 ptr = mono_metadata_blob_heap (image, cols [MONO_METHODSPEC_SIGNATURE]);
1098 mono_metadata_decode_value (ptr, &ptr);
1100 param_count = mono_metadata_decode_value (ptr, &ptr);
1102 inst = mono_metadata_parse_generic_inst (image, NULL, param_count, ptr, &ptr);
1106 if (context && inst->is_open) {
1107 inst = mono_metadata_inflate_generic_inst (inst, context, &error);
1108 if (!mono_error_ok (&error)) {
1109 mono_error_cleanup (&error); /*FIXME don't swallow error message.*/
1114 if ((token & MONO_METHODDEFORREF_MASK) == MONO_METHODDEFORREF_METHODDEF)
1115 method = mono_get_method_full (image, MONO_TOKEN_METHOD_DEF | nindex, NULL, context);
1117 method = method_from_memberref (image, nindex, context, NULL);
1122 klass = method->klass;
1124 if (klass->generic_class) {
1125 g_assert (method->is_inflated);
1126 method = ((MonoMethodInflated *) method)->declaring;
1129 new_context.class_inst = klass->generic_class ? klass->generic_class->context.class_inst : NULL;
1130 new_context.method_inst = inst;
1132 return mono_class_inflate_generic_method_full (method, klass, &new_context);
1135 struct _MonoDllMap {
1143 static MonoDllMap *global_dll_map;
1146 mono_dllmap_lookup_list (MonoDllMap *dll_map, const char *dll, const char* func, const char **rdll, const char **rfunc) {
1154 mono_loader_lock ();
1157 * we use the first entry we find that matches, since entries from
1158 * the config file are prepended to the list and we document that the
1159 * later entries win.
1161 for (; dll_map; dll_map = dll_map->next) {
1162 if (dll_map->dll [0] == 'i' && dll_map->dll [1] == ':') {
1163 if (g_ascii_strcasecmp (dll_map->dll + 2, dll))
1165 } else if (strcmp (dll_map->dll, dll)) {
1168 if (!found && dll_map->target) {
1169 *rdll = dll_map->target;
1171 /* we don't quit here, because we could find a full
1172 * entry that matches also function and that has priority.
1175 if (dll_map->func && strcmp (dll_map->func, func) == 0) {
1176 *rfunc = dll_map->target_func;
1181 mono_loader_unlock ();
1186 mono_dllmap_lookup (MonoImage *assembly, const char *dll, const char* func, const char **rdll, const char **rfunc)
1189 if (assembly && assembly->dll_map) {
1190 res = mono_dllmap_lookup_list (assembly->dll_map, dll, func, rdll, rfunc);
1194 return mono_dllmap_lookup_list (global_dll_map, dll, func, rdll, rfunc);
1198 * mono_dllmap_insert:
1199 * @assembly: if NULL, this is a global mapping, otherwise the remapping of the dynamic library will only apply to the specified assembly
1200 * @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
1201 * @func: if not null, the mapping will only applied to the named function (the value of EntryPoint)
1202 * @tdll: The name of the library to map the specified @dll if it matches.
1203 * @tfunc: if func is not NULL, the name of the function that replaces the invocation
1205 * LOCKING: Acquires the loader lock.
1207 * This function is used to programatically add DllImport remapping in either
1208 * a specific assembly, or as a global remapping. This is done by remapping
1209 * references in a DllImport attribute from the @dll library name into the @tdll
1210 * name. If the @dll name contains the prefix "i:", the comparison of the
1211 * library name is done without case sensitivity.
1213 * If you pass @func, this is the name of the EntryPoint in a DllImport if specified
1214 * or the name of the function as determined by DllImport. If you pass @func, you
1215 * must also pass @tfunc which is the name of the target function to invoke on a match.
1218 * mono_dllmap_insert (NULL, "i:libdemo.dll", NULL, relocated_demo_path, NULL);
1220 * The above will remap DllImport statments for "libdemo.dll" and "LIBDEMO.DLL" to
1221 * the contents of relocated_demo_path for all assemblies in the Mono process.
1223 * NOTE: This can be called before the runtime is initialized, for example from
1224 * mono_config_parse ().
1227 mono_dllmap_insert (MonoImage *assembly, const char *dll, const char *func, const char *tdll, const char *tfunc)
1231 mono_loader_init ();
1233 mono_loader_lock ();
1236 entry = g_malloc0 (sizeof (MonoDllMap));
1237 entry->dll = dll? g_strdup (dll): NULL;
1238 entry->target = tdll? g_strdup (tdll): NULL;
1239 entry->func = func? g_strdup (func): NULL;
1240 entry->target_func = tfunc? g_strdup (tfunc): NULL;
1241 entry->next = global_dll_map;
1242 global_dll_map = entry;
1244 entry = mono_image_alloc0 (assembly, sizeof (MonoDllMap));
1245 entry->dll = dll? mono_image_strdup (assembly, dll): NULL;
1246 entry->target = tdll? mono_image_strdup (assembly, tdll): NULL;
1247 entry->func = func? mono_image_strdup (assembly, func): NULL;
1248 entry->target_func = tfunc? mono_image_strdup (assembly, tfunc): NULL;
1249 entry->next = assembly->dll_map;
1250 assembly->dll_map = entry;
1253 mono_loader_unlock ();
1257 free_dllmap (MonoDllMap *map)
1260 MonoDllMap *next = map->next;
1263 g_free (map->target);
1265 g_free (map->target_func);
1272 dllmap_cleanup (void)
1274 free_dllmap (global_dll_map);
1275 global_dll_map = NULL;
1278 static GHashTable *global_module_map;
1281 cached_module_load (const char *name, int flags, char **err)
1287 mono_loader_lock ();
1288 if (!global_module_map)
1289 global_module_map = g_hash_table_new (g_str_hash, g_str_equal);
1290 res = g_hash_table_lookup (global_module_map, name);
1292 mono_loader_unlock ();
1295 res = mono_dl_open (name, flags, err);
1297 g_hash_table_insert (global_module_map, g_strdup (name), res);
1298 mono_loader_unlock ();
1302 static MonoDl *internal_module;
1305 is_absolute_path (const char *path)
1307 #ifdef PLATFORM_MACOSX
1308 if (!strncmp (path, "@executable_path/", 17) || !strncmp (path, "@loader_path/", 13) ||
1309 !strncmp (path, "@rpath/", 7))
1312 return g_path_is_absolute (path);
1316 mono_lookup_pinvoke_call (MonoMethod *method, const char **exc_class, const char **exc_arg)
1318 MonoImage *image = method->klass->image;
1319 MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *)method;
1320 MonoTableInfo *tables = image->tables;
1321 MonoTableInfo *im = &tables [MONO_TABLE_IMPLMAP];
1322 MonoTableInfo *mr = &tables [MONO_TABLE_MODULEREF];
1323 guint32 im_cols [MONO_IMPLMAP_SIZE];
1324 guint32 scope_token;
1325 const char *import = NULL;
1326 const char *orig_scope;
1327 const char *new_scope;
1329 char *full_name, *file_name, *found_name = NULL;
1331 MonoDl *module = NULL;
1332 gboolean cached = FALSE;
1334 g_assert (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL);
1342 return piinfo->addr;
1344 if (image_is_dynamic (method->klass->image)) {
1345 MonoReflectionMethodAux *method_aux =
1346 g_hash_table_lookup (
1347 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
1351 import = method_aux->dllentry;
1352 orig_scope = method_aux->dll;
1355 if (!piinfo->implmap_idx || piinfo->implmap_idx > im->rows)
1358 mono_metadata_decode_row (im, piinfo->implmap_idx - 1, im_cols, MONO_IMPLMAP_SIZE);
1360 if (!im_cols [MONO_IMPLMAP_SCOPE] || im_cols [MONO_IMPLMAP_SCOPE] > mr->rows)
1363 piinfo->piflags = im_cols [MONO_IMPLMAP_FLAGS];
1364 import = mono_metadata_string_heap (image, im_cols [MONO_IMPLMAP_NAME]);
1365 scope_token = mono_metadata_decode_row_col (mr, im_cols [MONO_IMPLMAP_SCOPE] - 1, MONO_MODULEREF_NAME);
1366 orig_scope = mono_metadata_string_heap (image, scope_token);
1369 mono_dllmap_lookup (image, orig_scope, import, &new_scope, &import);
1372 mono_loader_lock ();
1373 if (!image->pinvoke_scopes) {
1374 image->pinvoke_scopes = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL);
1375 image->pinvoke_scope_filenames = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
1377 module = g_hash_table_lookup (image->pinvoke_scopes, new_scope);
1378 found_name = g_hash_table_lookup (image->pinvoke_scope_filenames, new_scope);
1379 mono_loader_unlock ();
1383 found_name = g_strdup (found_name);
1387 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1388 "DllImport attempting to load: '%s'.", new_scope);
1390 /* we allow a special name to dlopen from the running process namespace */
1391 if (strcmp (new_scope, "__Internal") == 0){
1392 if (internal_module == NULL)
1393 internal_module = mono_dl_open (NULL, MONO_DL_LAZY, &error_msg);
1394 module = internal_module;
1399 * Try loading the module using a variety of names
1401 for (i = 0; i < 4; ++i) {
1402 char *base_name = NULL, *dir_name = NULL;
1403 gboolean is_absolute = is_absolute_path (new_scope);
1407 /* Try the original name */
1408 file_name = g_strdup (new_scope);
1411 /* Try trimming the .dll extension */
1412 if (strstr (new_scope, ".dll") == (new_scope + strlen (new_scope) - 4)) {
1413 file_name = g_strdup (new_scope);
1414 file_name [strlen (new_scope) - 4] = '\0';
1421 dir_name = g_path_get_dirname (new_scope);
1422 base_name = g_path_get_basename (new_scope);
1423 if (strstr (base_name, "lib") != base_name) {
1424 char *tmp = g_strdup_printf ("lib%s", base_name);
1427 file_name = g_strdup_printf ("%s%s%s", dir_name, G_DIR_SEPARATOR_S, base_name);
1430 } else if (strstr (new_scope, "lib") != new_scope) {
1431 file_name = g_strdup_printf ("lib%s", new_scope);
1436 #ifndef TARGET_WIN32
1437 if (!g_ascii_strcasecmp ("user32.dll", new_scope) ||
1438 !g_ascii_strcasecmp ("kernel32.dll", new_scope) ||
1439 !g_ascii_strcasecmp ("user32", new_scope) ||
1440 !g_ascii_strcasecmp ("kernel", new_scope)) {
1441 file_name = g_strdup ("libMonoSupportW.so");
1445 #ifndef TARGET_WIN32
1452 dir_name = g_path_get_dirname (file_name);
1454 base_name = g_path_get_basename (file_name);
1457 if (!module && is_absolute) {
1458 module = cached_module_load (file_name, MONO_DL_LAZY, &error_msg);
1460 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1461 "DllImport error loading library '%s': '%s'.",
1462 file_name, error_msg);
1465 found_name = g_strdup (file_name);
1469 if (!module && !is_absolute) {
1471 char *mdirname = g_path_get_dirname (image->name);
1472 while ((full_name = mono_dl_build_path (mdirname, file_name, &iter))) {
1473 module = cached_module_load (full_name, MONO_DL_LAZY, &error_msg);
1475 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1476 "DllImport error loading library '%s': '%s'.",
1477 full_name, error_msg);
1480 found_name = g_strdup (full_name);
1491 char *file_or_base = is_absolute ? base_name : file_name;
1492 while ((full_name = mono_dl_build_path (dir_name, file_or_base, &iter))) {
1493 module = cached_module_load (full_name, MONO_DL_LAZY, &error_msg);
1495 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1496 "DllImport error loading library '%s': '%s'.",
1497 full_name, error_msg);
1500 found_name = g_strdup (full_name);
1509 module = cached_module_load (file_name, MONO_DL_LAZY, &error_msg);
1511 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1512 "DllImport error loading library '%s': '%s'.",
1513 file_name, error_msg);
1515 found_name = g_strdup (file_name);
1530 mono_trace (G_LOG_LEVEL_WARNING, MONO_TRACE_DLLIMPORT,
1531 "DllImport unable to load library '%s'.",
1536 *exc_class = "DllNotFoundException";
1537 *exc_arg = new_scope;
1543 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1544 "DllImport loaded library '%s'.", found_name);
1545 mono_loader_lock ();
1546 if (!g_hash_table_lookup (image->pinvoke_scopes, new_scope)) {
1547 g_hash_table_insert (image->pinvoke_scopes, g_strdup (new_scope), module);
1548 g_hash_table_insert (image->pinvoke_scope_filenames, g_strdup (new_scope), g_strdup (found_name));
1550 mono_loader_unlock ();
1553 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1554 "DllImport searching in: '%s' ('%s').", new_scope, found_name);
1555 g_free (found_name);
1558 if (import && import [0] == '#' && isdigit (import [1])) {
1562 id = strtol (import + 1, &end, 10);
1563 if (id > 0 && *end == '\0')
1567 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1568 "Searching for '%s'.", import);
1570 if (piinfo->piflags & PINVOKE_ATTRIBUTE_NO_MANGLE) {
1571 error_msg = mono_dl_symbol (module, import, &piinfo->addr);
1573 char *mangled_name = NULL, *mangled_name2 = NULL;
1576 int mangle_param_count;
1582 * Search using a variety of mangled names
1584 for (mangle_charset = 0; mangle_charset <= 1; mangle_charset ++) {
1585 for (mangle_stdcall = 0; mangle_stdcall <= 1; mangle_stdcall ++) {
1586 gboolean need_param_count = FALSE;
1588 if (mangle_stdcall > 0)
1589 need_param_count = TRUE;
1591 for (mangle_param_count = 0; mangle_param_count <= (need_param_count ? 256 : 0); mangle_param_count += 4) {
1596 mangled_name = (char*)import;
1597 switch (piinfo->piflags & PINVOKE_ATTRIBUTE_CHAR_SET_MASK) {
1598 case PINVOKE_ATTRIBUTE_CHAR_SET_UNICODE:
1599 /* Try the mangled name first */
1600 if (mangle_charset == 0)
1601 mangled_name = g_strconcat (import, "W", NULL);
1603 case PINVOKE_ATTRIBUTE_CHAR_SET_AUTO:
1605 if (mangle_charset == 0)
1606 mangled_name = g_strconcat (import, "W", NULL);
1608 /* Try the mangled name last */
1609 if (mangle_charset == 1)
1610 mangled_name = g_strconcat (import, "A", NULL);
1613 case PINVOKE_ATTRIBUTE_CHAR_SET_ANSI:
1615 /* Try the mangled name last */
1616 if (mangle_charset == 1)
1617 mangled_name = g_strconcat (import, "A", NULL);
1622 if (mangle_param_count == 0)
1623 param_count = mono_method_signature (method)->param_count * sizeof (gpointer);
1625 /* Try brute force, since it would be very hard to compute the stack usage correctly */
1626 param_count = mangle_param_count;
1628 /* Try the stdcall mangled name */
1630 * gcc under windows creates mangled names without the underscore, but MS.NET
1631 * doesn't support it, so we doesn't support it either.
1633 if (mangle_stdcall == 1)
1634 mangled_name2 = g_strdup_printf ("_%s@%d", mangled_name, param_count);
1636 mangled_name2 = mangled_name;
1638 mangled_name2 = mangled_name;
1641 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1642 "Probing '%s'.", mangled_name2);
1644 error_msg = mono_dl_symbol (module, mangled_name2, &piinfo->addr);
1649 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1650 "Found as '%s'.", mangled_name2);
1652 if (mangled_name != mangled_name2)
1653 g_free (mangled_name2);
1654 if (mangled_name != import)
1655 g_free (mangled_name);
1661 if (!piinfo->addr) {
1664 *exc_class = "EntryPointNotFoundException";
1669 return piinfo->addr;
1673 * LOCKING: assumes the loader lock to be taken.
1676 mono_get_method_from_token (MonoImage *image, guint32 token, MonoClass *klass,
1677 MonoGenericContext *context, gboolean *used_context)
1680 int table = mono_metadata_token_table (token);
1681 int idx = mono_metadata_token_index (token);
1682 MonoTableInfo *tables = image->tables;
1683 MonoGenericContainer *generic_container = NULL, *container = NULL;
1684 const char *sig = NULL;
1686 guint32 cols [MONO_TYPEDEF_SIZE];
1688 if (image_is_dynamic (image)) {
1689 MonoClass *handle_class;
1691 result = mono_lookup_dynamic_token_class (image, token, TRUE, &handle_class, context);
1692 // This checks the memberref type as well
1693 if (result && handle_class != mono_defaults.methodhandle_class) {
1694 mono_loader_set_error_bad_image (g_strdup_printf ("Bad method token 0x%08x on image %s.", token, image->name));
1700 if (table != MONO_TABLE_METHOD) {
1701 if (table == MONO_TABLE_METHODSPEC) {
1702 if (used_context) *used_context = TRUE;
1703 return method_from_methodspec (image, context, idx);
1705 if (table != MONO_TABLE_MEMBERREF) {
1706 g_warning ("got wrong token: 0x%08x\n", token);
1707 mono_loader_set_error_bad_image (g_strdup_printf ("Bad method token 0x%08x on image %s.", token, image->name));
1710 return method_from_memberref (image, idx, context, used_context);
1713 if (used_context) *used_context = FALSE;
1715 if (idx > image->tables [MONO_TABLE_METHOD].rows) {
1716 mono_loader_set_error_bad_image (g_strdup_printf ("Bad method token 0x%08x on image %s.", token, image->name));
1720 mono_metadata_decode_row (&image->tables [MONO_TABLE_METHOD], idx - 1, cols, 6);
1722 if ((cols [2] & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
1723 (cols [1] & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL)) {
1724 result = (MonoMethod *)mono_image_alloc0 (image, sizeof (MonoMethodPInvoke));
1726 result = (MonoMethod *)mono_image_alloc0 (image, sizeof (MonoMethod));
1727 methods_size += sizeof (MonoMethod);
1730 mono_stats.method_count ++;
1732 if (!klass) { /*FIXME put this before the image alloc*/
1733 guint32 type = mono_metadata_typedef_from_method (image, token);
1736 klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF | type);
1742 result->klass = klass;
1743 result->flags = cols [2];
1744 result->iflags = cols [1];
1745 result->token = token;
1746 result->name = mono_metadata_string_heap (image, cols [3]);
1748 if (!sig) /* already taken from the methodref */
1749 sig = mono_metadata_blob_heap (image, cols [4]);
1750 size = mono_metadata_decode_blob_size (sig, &sig);
1752 container = klass->generic_container;
1755 * load_generic_params does a binary search so only call it if the method
1759 generic_container = mono_metadata_load_generic_params (image, token, container);
1760 if (generic_container) {
1761 result->is_generic = TRUE;
1762 generic_container->owner.method = result;
1763 /*FIXME put this before the image alloc*/
1764 if (!mono_metadata_load_generic_param_constraints_full (image, token, generic_container))
1767 container = generic_container;
1770 if (cols [1] & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) {
1771 if (result->klass == mono_defaults.string_class && !strcmp (result->name, ".ctor"))
1772 result->string_ctor = 1;
1773 } else if (cols [2] & METHOD_ATTRIBUTE_PINVOKE_IMPL) {
1774 MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *)result;
1777 /* IJW is P/Invoke with a predefined function pointer. */
1778 if (image->is_module_handle && (cols [1] & METHOD_IMPL_ATTRIBUTE_NATIVE)) {
1779 piinfo->addr = mono_image_rva_map (image, cols [0]);
1780 g_assert (piinfo->addr);
1783 piinfo->implmap_idx = mono_metadata_implmap_from_method (image, idx - 1);
1784 /* Native methods can have no map. */
1785 if (piinfo->implmap_idx)
1786 piinfo->piflags = mono_metadata_decode_row_col (&tables [MONO_TABLE_IMPLMAP], piinfo->implmap_idx - 1, MONO_IMPLMAP_FLAGS);
1789 if (generic_container)
1790 mono_method_set_generic_container (result, generic_container);
1796 mono_get_method (MonoImage *image, guint32 token, MonoClass *klass)
1798 return mono_get_method_full (image, token, klass, NULL);
1802 mono_get_method_full (MonoImage *image, guint32 token, MonoClass *klass,
1803 MonoGenericContext *context)
1805 MonoMethod *result = NULL;
1806 gboolean used_context = FALSE;
1808 /* We do everything inside the lock to prevent creation races */
1810 mono_image_lock (image);
1812 if (mono_metadata_token_table (token) == MONO_TABLE_METHOD) {
1813 if (!image->method_cache)
1814 image->method_cache = g_hash_table_new (NULL, NULL);
1815 result = g_hash_table_lookup (image->method_cache, GINT_TO_POINTER (mono_metadata_token_index (token)));
1816 } else if (!image_is_dynamic (image)) {
1817 if (!image->methodref_cache)
1818 image->methodref_cache = g_hash_table_new (NULL, NULL);
1819 result = g_hash_table_lookup (image->methodref_cache, GINT_TO_POINTER (token));
1821 mono_image_unlock (image);
1827 result = mono_get_method_from_token (image, token, klass, context, &used_context);
1831 mono_image_lock (image);
1832 if (!used_context && !result->is_inflated) {
1833 MonoMethod *result2 = NULL;
1835 if (mono_metadata_token_table (token) == MONO_TABLE_METHOD)
1836 result2 = g_hash_table_lookup (image->method_cache, GINT_TO_POINTER (mono_metadata_token_index (token)));
1837 else if (!image_is_dynamic (image))
1838 result2 = g_hash_table_lookup (image->methodref_cache, GINT_TO_POINTER (token));
1841 mono_image_unlock (image);
1845 if (mono_metadata_token_table (token) == MONO_TABLE_METHOD)
1846 g_hash_table_insert (image->method_cache, GINT_TO_POINTER (mono_metadata_token_index (token)), result);
1847 else if (!image_is_dynamic (image))
1848 g_hash_table_insert (image->methodref_cache, GINT_TO_POINTER (token), result);
1851 mono_image_unlock (image);
1857 get_method_constrained (MonoImage *image, MonoMethod *method, MonoClass *constrained_class, MonoGenericContext *context)
1860 MonoClass *ic = NULL;
1861 MonoGenericContext *method_context = NULL;
1862 MonoMethodSignature *sig, *original_sig;
1864 mono_class_init (constrained_class);
1865 original_sig = sig = mono_method_signature (method);
1870 if (method->is_inflated && sig->generic_param_count) {
1871 MonoMethodInflated *imethod = (MonoMethodInflated *) method;
1872 sig = mono_method_signature (imethod->declaring); /*We assume that if the inflated method signature is valid, the declaring method is too*/
1873 method_context = mono_method_get_context (method);
1877 * We must inflate the signature with the class instantiation to work on
1878 * cases where a class inherit from a generic type and the override replaces
1879 * any type argument which a concrete type. See #325283.
1881 if (method_context->class_inst) {
1883 MonoGenericContext ctx;
1884 ctx.method_inst = NULL;
1885 ctx.class_inst = method_context->class_inst;
1886 /*Fixme, property propagate this error*/
1887 sig = inflate_generic_signature_checked (method->klass->image, sig, &ctx, &error);
1888 if (!mono_error_ok (&error)) {
1889 mono_error_cleanup (&error);
1895 if ((constrained_class != method->klass) && (MONO_CLASS_IS_INTERFACE (method->klass)))
1898 result = find_method (constrained_class, ic, method->name, sig, constrained_class);
1899 if (sig != original_sig)
1900 mono_metadata_free_inflated_signature (sig);
1903 char *m = mono_method_full_name (method, 1);
1904 g_warning ("Missing method %s.%s.%s in assembly %s method %s", method->klass->name_space,
1905 method->klass->name, method->name, image->name, m);
1911 result = mono_class_inflate_generic_method (result, method_context);
1917 mono_get_method_constrained_with_method (MonoImage *image, MonoMethod *method, MonoClass *constrained_class,
1918 MonoGenericContext *context)
1924 mono_loader_lock ();
1926 result = get_method_constrained (image, method, constrained_class, context);
1928 mono_loader_unlock ();
1932 * mono_get_method_constrained:
1934 * This is used when JITing the `constrained.' opcode.
1936 * This returns two values: the contrained method, which has been inflated
1937 * as the function return value; And the original CIL-stream method as
1938 * declared in cil_method. The later is used for verification.
1941 mono_get_method_constrained (MonoImage *image, guint32 token, MonoClass *constrained_class,
1942 MonoGenericContext *context, MonoMethod **cil_method)
1946 mono_loader_lock ();
1948 *cil_method = mono_get_method_from_token (image, token, NULL, context, NULL);
1950 mono_loader_unlock ();
1954 result = get_method_constrained (image, *cil_method, constrained_class, context);
1956 mono_loader_unlock ();
1961 mono_free_method (MonoMethod *method)
1963 if (mono_profiler_get_events () & MONO_PROFILE_METHOD_EVENTS)
1964 mono_profiler_method_free (method);
1966 /* FIXME: This hack will go away when the profiler will support freeing methods */
1967 if (mono_profiler_get_events () != MONO_PROFILE_NONE)
1970 if (method->signature) {
1972 * FIXME: This causes crashes because the types inside signatures and
1973 * locals are shared.
1975 /* mono_metadata_free_method_signature (method->signature); */
1976 /* g_free (method->signature); */
1979 if (method_is_dynamic (method)) {
1980 MonoMethodWrapper *mw = (MonoMethodWrapper*)method;
1983 mono_marshal_free_dynamic_wrappers (method);
1985 mono_image_property_remove (method->klass->image, method);
1987 g_free ((char*)method->name);
1989 g_free ((char*)mw->header->code);
1990 for (i = 0; i < mw->header->num_locals; ++i)
1991 g_free (mw->header->locals [i]);
1992 g_free (mw->header->clauses);
1993 g_free (mw->header);
1995 g_free (mw->method_data);
1996 g_free (method->signature);
2002 mono_method_get_param_names (MonoMethod *method, const char **names)
2006 MonoTableInfo *methodt;
2007 MonoTableInfo *paramt;
2008 MonoMethodSignature *signature;
2011 if (method->is_inflated)
2012 method = ((MonoMethodInflated *) method)->declaring;
2014 signature = mono_method_signature (method);
2015 /*FIXME this check is somewhat redundant since the caller usally will have to get the signature to figure out the
2016 number of arguments and allocate a properly sized array. */
2017 if (signature == NULL)
2020 if (!signature->param_count)
2023 for (i = 0; i < signature->param_count; ++i)
2026 klass = method->klass;
2030 mono_class_init (klass);
2032 if (image_is_dynamic (klass->image)) {
2033 MonoReflectionMethodAux *method_aux =
2034 g_hash_table_lookup (
2035 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
2036 if (method_aux && method_aux->param_names) {
2037 for (i = 0; i < mono_method_signature (method)->param_count; ++i)
2038 if (method_aux->param_names [i + 1])
2039 names [i] = method_aux->param_names [i + 1];
2044 if (method->wrapper_type) {
2045 char **pnames = NULL;
2047 mono_image_lock (klass->image);
2048 if (klass->image->wrapper_param_names)
2049 pnames = g_hash_table_lookup (klass->image->wrapper_param_names, method);
2050 mono_image_unlock (klass->image);
2053 for (i = 0; i < signature->param_count; ++i)
2054 names [i] = pnames [i];
2059 methodt = &klass->image->tables [MONO_TABLE_METHOD];
2060 paramt = &klass->image->tables [MONO_TABLE_PARAM];
2061 idx = mono_method_get_index (method);
2063 guint32 cols [MONO_PARAM_SIZE];
2066 param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
2068 if (idx < methodt->rows)
2069 lastp = mono_metadata_decode_row_col (methodt, idx, MONO_METHOD_PARAMLIST);
2071 lastp = paramt->rows + 1;
2072 for (i = param_index; i < lastp; ++i) {
2073 mono_metadata_decode_row (paramt, i -1, cols, MONO_PARAM_SIZE);
2074 if (cols [MONO_PARAM_SEQUENCE] && cols [MONO_PARAM_SEQUENCE] <= signature->param_count) /* skip return param spec and bounds check*/
2075 names [cols [MONO_PARAM_SEQUENCE] - 1] = mono_metadata_string_heap (klass->image, cols [MONO_PARAM_NAME]);
2081 mono_method_get_param_token (MonoMethod *method, int index)
2083 MonoClass *klass = method->klass;
2084 MonoTableInfo *methodt;
2087 mono_class_init (klass);
2089 if (image_is_dynamic (klass->image))
2090 g_assert_not_reached ();
2092 methodt = &klass->image->tables [MONO_TABLE_METHOD];
2093 idx = mono_method_get_index (method);
2095 guint param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
2099 return mono_metadata_make_token (MONO_TABLE_PARAM, 0);
2101 return mono_metadata_make_token (MONO_TABLE_PARAM, param_index + index);
2108 mono_method_get_marshal_info (MonoMethod *method, MonoMarshalSpec **mspecs)
2111 MonoClass *klass = method->klass;
2112 MonoTableInfo *methodt;
2113 MonoTableInfo *paramt;
2114 MonoMethodSignature *signature;
2117 signature = mono_method_signature (method);
2118 g_assert (signature); /*FIXME there is no way to signal error from this function*/
2120 for (i = 0; i < signature->param_count + 1; ++i)
2123 if (image_is_dynamic (method->klass->image)) {
2124 MonoReflectionMethodAux *method_aux =
2125 g_hash_table_lookup (
2126 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
2127 if (method_aux && method_aux->param_marshall) {
2128 MonoMarshalSpec **dyn_specs = method_aux->param_marshall;
2129 for (i = 0; i < signature->param_count + 1; ++i)
2130 if (dyn_specs [i]) {
2131 mspecs [i] = g_new0 (MonoMarshalSpec, 1);
2132 memcpy (mspecs [i], dyn_specs [i], sizeof (MonoMarshalSpec));
2133 mspecs [i]->data.custom_data.custom_name = g_strdup (dyn_specs [i]->data.custom_data.custom_name);
2134 mspecs [i]->data.custom_data.cookie = g_strdup (dyn_specs [i]->data.custom_data.cookie);
2140 mono_class_init (klass);
2142 methodt = &klass->image->tables [MONO_TABLE_METHOD];
2143 paramt = &klass->image->tables [MONO_TABLE_PARAM];
2144 idx = mono_method_get_index (method);
2146 guint32 cols [MONO_PARAM_SIZE];
2147 guint param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
2149 if (idx < methodt->rows)
2150 lastp = mono_metadata_decode_row_col (methodt, idx, MONO_METHOD_PARAMLIST);
2152 lastp = paramt->rows + 1;
2154 for (i = param_index; i < lastp; ++i) {
2155 mono_metadata_decode_row (paramt, i -1, cols, MONO_PARAM_SIZE);
2157 if (cols [MONO_PARAM_FLAGS] & PARAM_ATTRIBUTE_HAS_FIELD_MARSHAL && cols [MONO_PARAM_SEQUENCE] <= signature->param_count) {
2159 tp = mono_metadata_get_marshal_info (klass->image, i - 1, FALSE);
2161 mspecs [cols [MONO_PARAM_SEQUENCE]]= mono_metadata_parse_marshal_spec (klass->image, tp);
2170 mono_method_has_marshal_info (MonoMethod *method)
2173 MonoClass *klass = method->klass;
2174 MonoTableInfo *methodt;
2175 MonoTableInfo *paramt;
2178 if (image_is_dynamic (method->klass->image)) {
2179 MonoReflectionMethodAux *method_aux =
2180 g_hash_table_lookup (
2181 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
2182 MonoMarshalSpec **dyn_specs = method_aux->param_marshall;
2184 for (i = 0; i < mono_method_signature (method)->param_count + 1; ++i)
2191 mono_class_init (klass);
2193 methodt = &klass->image->tables [MONO_TABLE_METHOD];
2194 paramt = &klass->image->tables [MONO_TABLE_PARAM];
2195 idx = mono_method_get_index (method);
2197 guint32 cols [MONO_PARAM_SIZE];
2198 guint param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
2200 if (idx + 1 < methodt->rows)
2201 lastp = mono_metadata_decode_row_col (methodt, idx, MONO_METHOD_PARAMLIST);
2203 lastp = paramt->rows + 1;
2205 for (i = param_index; i < lastp; ++i) {
2206 mono_metadata_decode_row (paramt, i -1, cols, MONO_PARAM_SIZE);
2208 if (cols [MONO_PARAM_FLAGS] & PARAM_ATTRIBUTE_HAS_FIELD_MARSHAL)
2217 mono_method_get_wrapper_data (MonoMethod *method, guint32 id)
2220 g_assert (method != NULL);
2221 g_assert (method->wrapper_type != MONO_WRAPPER_NONE);
2223 if (method->is_inflated)
2224 method = ((MonoMethodInflated *) method)->declaring;
2225 data = ((MonoMethodWrapper *)method)->method_data;
2226 g_assert (data != NULL);
2227 g_assert (id <= GPOINTER_TO_UINT (*data));
2234 } StackWalkUserData;
2237 stack_walk_adapter (MonoStackFrameInfo *frame, MonoContext *ctx, gpointer data)
2239 StackWalkUserData *d = data;
2241 switch (frame->type) {
2242 case FRAME_TYPE_DEBUGGER_INVOKE:
2243 case FRAME_TYPE_MANAGED_TO_NATIVE:
2245 case FRAME_TYPE_MANAGED:
2246 g_assert (frame->ji);
2247 return d->func (mono_jit_info_get_method (frame->ji), frame->native_offset, frame->il_offset, frame->managed, d->user_data);
2250 g_assert_not_reached ();
2256 mono_stack_walk (MonoStackWalk func, gpointer user_data)
2258 StackWalkUserData ud = { func, user_data };
2259 mono_get_eh_callbacks ()->mono_walk_stack_with_ctx (stack_walk_adapter, NULL, MONO_UNWIND_LOOKUP_ALL, &ud);
2263 mono_stack_walk_no_il (MonoStackWalk func, gpointer user_data)
2265 StackWalkUserData ud = { func, user_data };
2266 mono_get_eh_callbacks ()->mono_walk_stack_with_ctx (stack_walk_adapter, NULL, MONO_UNWIND_DEFAULT, &ud);
2270 last_managed (MonoMethod *m, gint no, gint ilo, gboolean managed, gpointer data)
2272 MonoMethod **dest = data;
2274 /*g_print ("In %s::%s [%d] [%d]\n", m->klass->name, m->name, no, ilo);*/
2280 mono_method_get_last_managed (void)
2282 MonoMethod *m = NULL;
2283 mono_stack_walk_no_il (last_managed, &m);
2287 static gboolean loader_lock_track_ownership = FALSE;
2292 * See docs/thread-safety.txt for the locking strategy.
2295 mono_loader_lock (void)
2297 mono_locks_acquire (&loader_mutex, LoaderLock);
2298 if (G_UNLIKELY (loader_lock_track_ownership)) {
2299 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));
2304 mono_loader_unlock (void)
2306 mono_locks_release (&loader_mutex, LoaderLock);
2307 if (G_UNLIKELY (loader_lock_track_ownership)) {
2308 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));
2313 * mono_loader_lock_track_ownership:
2315 * Set whenever the runtime should track ownership of the loader lock. If set to TRUE,
2316 * the mono_loader_lock_is_owned_by_self () can be called to query whenever the current
2317 * thread owns the loader lock.
2320 mono_loader_lock_track_ownership (gboolean track)
2322 loader_lock_track_ownership = track;
2326 * mono_loader_lock_is_owned_by_self:
2328 * Return whenever the current thread owns the loader lock.
2329 * This is useful to avoid blocking operations while holding the loader lock.
2332 mono_loader_lock_is_owned_by_self (void)
2334 g_assert (loader_lock_track_ownership);
2336 return GPOINTER_TO_UINT (mono_native_tls_get_value (loader_lock_nest_id)) > 0;
2340 * mono_loader_lock_if_inited:
2342 * Acquire the loader lock if it has been initialized, no-op otherwise. This can
2343 * be used in runtime initialization code which can be executed before mono_loader_init ().
2346 mono_loader_lock_if_inited (void)
2348 if (loader_lock_inited)
2349 mono_loader_lock ();
2353 mono_loader_unlock_if_inited (void)
2355 if (loader_lock_inited)
2356 mono_loader_unlock ();
2360 * mono_method_signature:
2362 * Return the signature of the method M. On failure, returns NULL, and ERR is set.
2364 MonoMethodSignature*
2365 mono_method_signature_checked (MonoMethod *m, MonoError *error)
2371 gboolean can_cache_signature;
2372 MonoGenericContainer *container;
2373 MonoMethodSignature *signature = NULL;
2376 /* We need memory barriers below because of the double-checked locking pattern */
2378 mono_error_init (error);
2381 return m->signature;
2383 mono_loader_lock ();
2386 mono_loader_unlock ();
2387 return m->signature;
2390 if (m->is_inflated) {
2391 MonoMethodInflated *imethod = (MonoMethodInflated *) m;
2392 /* the lock is recursive */
2393 signature = mono_method_signature (imethod->declaring);
2394 signature = inflate_generic_signature_checked (imethod->declaring->klass->image, signature, mono_method_get_context (m), error);
2395 if (!mono_error_ok (error)) {
2396 mono_loader_unlock ();
2400 inflated_signatures_size += mono_metadata_signature_size (signature);
2402 mono_memory_barrier ();
2403 m->signature = signature;
2404 mono_loader_unlock ();
2405 return m->signature;
2408 g_assert (mono_metadata_token_table (m->token) == MONO_TABLE_METHOD);
2409 idx = mono_metadata_token_index (m->token);
2410 img = m->klass->image;
2412 sig = mono_metadata_blob_heap (img, sig_offset = mono_metadata_decode_row_col (&img->tables [MONO_TABLE_METHOD], idx - 1, MONO_METHOD_SIGNATURE));
2414 g_assert (!m->klass->generic_class);
2415 container = mono_method_get_generic_container (m);
2417 container = m->klass->generic_container;
2419 /* Generic signatures depend on the container so they cannot be cached */
2420 /* icall/pinvoke signatures cannot be cached cause we modify them below */
2421 can_cache_signature = !(m->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && !(m->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) && !container;
2423 /* If the method has parameter attributes, that can modify the signature */
2424 if (mono_metadata_method_has_param_attrs (img, idx))
2425 can_cache_signature = FALSE;
2427 if (can_cache_signature)
2428 signature = g_hash_table_lookup (img->method_signatures, sig);
2431 const char *sig_body;
2432 /*TODO we should cache the failure result somewhere*/
2433 if (!mono_verifier_verify_method_signature (img, sig_offset, error)) {
2434 mono_loader_unlock ();
2438 size = mono_metadata_decode_blob_size (sig, &sig_body);
2440 signature = mono_metadata_parse_method_signature_full (img, container, idx, sig_body, NULL);
2442 mono_error_set_from_loader_error (error);
2443 mono_loader_unlock ();
2447 if (can_cache_signature)
2448 g_hash_table_insert (img->method_signatures, (gpointer)sig, signature);
2450 signatures_size += mono_metadata_signature_size (signature);
2453 /* Verify metadata consistency */
2454 if (signature->generic_param_count) {
2455 if (!container || !container->is_method) {
2456 mono_loader_unlock ();
2457 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);
2460 if (container->type_argc != signature->generic_param_count) {
2461 mono_loader_unlock ();
2462 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);
2465 } else if (container && container->is_method && container->type_argc) {
2466 mono_loader_unlock ();
2467 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);
2470 if (m->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL)
2471 signature->pinvoke = 1;
2472 else if (m->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) {
2473 MonoCallConvention conv = 0;
2474 MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *)m;
2475 signature->pinvoke = 1;
2477 switch (piinfo->piflags & PINVOKE_ATTRIBUTE_CALL_CONV_MASK) {
2478 case 0: /* no call conv, so using default */
2479 case PINVOKE_ATTRIBUTE_CALL_CONV_WINAPI:
2480 conv = MONO_CALL_DEFAULT;
2482 case PINVOKE_ATTRIBUTE_CALL_CONV_CDECL:
2485 case PINVOKE_ATTRIBUTE_CALL_CONV_STDCALL:
2486 conv = MONO_CALL_STDCALL;
2488 case PINVOKE_ATTRIBUTE_CALL_CONV_THISCALL:
2489 conv = MONO_CALL_THISCALL;
2491 case PINVOKE_ATTRIBUTE_CALL_CONV_FASTCALL:
2492 conv = MONO_CALL_FASTCALL;
2494 case PINVOKE_ATTRIBUTE_CALL_CONV_GENERIC:
2495 case PINVOKE_ATTRIBUTE_CALL_CONV_GENERICINST:
2497 mono_loader_unlock ();
2498 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);
2501 signature->call_convention = conv;
2504 mono_memory_barrier ();
2505 m->signature = signature;
2507 mono_loader_unlock ();
2508 return m->signature;
2512 * mono_method_signature:
2514 * Return the signature of the method M. On failure, returns NULL.
2516 MonoMethodSignature*
2517 mono_method_signature (MonoMethod *m)
2520 MonoMethodSignature *sig;
2522 sig = mono_method_signature_checked (m, &error);
2524 char *type_name = mono_type_get_full_name (m->klass);
2525 g_warning ("Could not load signature of %s:%s due to: %s", type_name, m->name, mono_error_get_message (&error));
2527 mono_error_cleanup (&error);
2534 mono_method_get_name (MonoMethod *method)
2536 return method->name;
2540 mono_method_get_class (MonoMethod *method)
2542 return method->klass;
2546 mono_method_get_token (MonoMethod *method)
2548 return method->token;
2552 mono_method_get_header (MonoMethod *method)
2558 MonoMethodHeader *header;
2559 MonoGenericContainer *container;
2561 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))
2564 if (method->is_inflated) {
2565 MonoMethodInflated *imethod = (MonoMethodInflated *) method;
2566 MonoMethodHeader *header;
2568 mono_loader_lock ();
2570 if (imethod->header) {
2571 mono_loader_unlock ();
2572 return imethod->header;
2575 header = mono_method_get_header (imethod->declaring);
2577 mono_loader_unlock ();
2581 imethod->header = inflate_generic_header (header, mono_method_get_context (method));
2582 mono_loader_unlock ();
2583 mono_metadata_free_mh (header);
2584 return imethod->header;
2587 if (method->wrapper_type != MONO_WRAPPER_NONE || method->sre_method) {
2588 MonoMethodWrapper *mw = (MonoMethodWrapper *)method;
2589 g_assert (mw->header);
2594 * We don't need locks here: the new header is allocated from malloc memory
2595 * and is not stored anywhere in the runtime, the user needs to free it.
2597 g_assert (mono_metadata_token_table (method->token) == MONO_TABLE_METHOD);
2598 idx = mono_metadata_token_index (method->token);
2599 img = method->klass->image;
2600 rva = mono_metadata_decode_row_col (&img->tables [MONO_TABLE_METHOD], idx - 1, MONO_METHOD_RVA);
2602 if (!mono_verifier_verify_method_header (img, rva, NULL))
2605 loc = mono_image_rva_map (img, rva);
2610 * When parsing the types of local variables, we must pass any container available
2611 * to ensure that both VAR and MVAR will get the right owner.
2613 container = mono_method_get_generic_container (method);
2615 container = method->klass->generic_container;
2616 header = mono_metadata_parse_mh_full (img, container, 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;