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, global_loader_data_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);
82 global_loader_data_lock (void)
84 mono_locks_acquire (&global_loader_data_mutex, LoaderGlobalDataLock);
88 global_loader_data_unlock (void)
90 mono_locks_release (&global_loader_data_mutex, LoaderGlobalDataLock);
96 static gboolean inited;
99 mono_mutex_init_recursive (&loader_mutex);
100 mono_mutex_init_recursive (&global_loader_data_mutex);
101 loader_lock_inited = TRUE;
103 mono_native_tls_alloc (&loader_error_thread_id, NULL);
104 mono_native_tls_alloc (&loader_lock_nest_id, NULL);
106 mono_counters_register ("Inflated signatures size",
107 MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &inflated_signatures_size);
108 mono_counters_register ("Memberref signature cache size",
109 MONO_COUNTER_METADATA | MONO_COUNTER_INT, &memberref_sig_cache_size);
110 mono_counters_register ("MonoMethod size",
111 MONO_COUNTER_METADATA | MONO_COUNTER_INT, &methods_size);
112 mono_counters_register ("MonoMethodSignature size",
113 MONO_COUNTER_METADATA | MONO_COUNTER_INT, &signatures_size);
120 mono_loader_cleanup (void)
124 mono_native_tls_free (loader_error_thread_id);
125 mono_native_tls_free (loader_lock_nest_id);
127 mono_mutex_destroy (&loader_mutex);
128 mono_mutex_destroy (&global_loader_data_mutex);
129 loader_lock_inited = FALSE;
133 * Handling of type load errors should be done as follows:
135 * If something could not be loaded, the loader should call one of the
136 * mono_loader_set_error_XXX functions ()
137 * with the appropriate arguments, then return NULL to report the failure. The error
138 * should be propagated until it reaches code which can throw managed exceptions. At that
139 * point, an exception should be thrown based on the information returned by
140 * mono_loader_get_last_error (). Then the error should be cleared by calling
141 * mono_loader_clear_error ().
145 set_loader_error (MonoLoaderError *error)
147 mono_loader_clear_error ();
148 mono_native_tls_set_value (loader_error_thread_id, error);
152 * mono_loader_set_error_assembly_load:
154 * Set the loader error for this thread.
157 mono_loader_set_error_assembly_load (const char *assembly_name, gboolean ref_only)
159 MonoLoaderError *error;
161 if (mono_loader_get_last_error ())
164 error = g_new0 (MonoLoaderError, 1);
165 error->exception_type = MONO_EXCEPTION_FILE_NOT_FOUND;
166 error->assembly_name = g_strdup (assembly_name);
167 error->ref_only = ref_only;
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
175 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);
177 mono_trace (G_LOG_LEVEL_WARNING, MONO_TRACE_ASSEMBLY, "Could not load file or assembly '%s' or one of its dependencies.", assembly_name);
179 set_loader_error (error);
183 * mono_loader_set_error_type_load:
185 * Set the loader error for this thread.
188 mono_loader_set_error_type_load (const char *class_name, const char *assembly_name)
190 MonoLoaderError *error;
192 if (mono_loader_get_last_error ())
195 error = g_new0 (MonoLoaderError, 1);
196 error->exception_type = MONO_EXCEPTION_TYPE_LOAD;
197 error->class_name = g_strdup (class_name);
198 error->assembly_name = g_strdup (assembly_name);
201 * This is not strictly needed, but some (most) of the loader code still
202 * can't deal with load errors, and this message is more helpful than an
205 mono_trace_warning (MONO_TRACE_TYPE, "The class %s could not be loaded, used in %s", class_name, assembly_name);
207 set_loader_error (error);
211 * mono_loader_set_error_method_load:
213 * Set the loader error for this thread. MEMBER_NAME should point to a string
217 mono_loader_set_error_method_load (const char *class_name, const char *member_name)
219 MonoLoaderError *error;
221 /* FIXME: Store the signature as well */
222 if (mono_loader_get_last_error ())
225 error = g_new0 (MonoLoaderError, 1);
226 error->exception_type = MONO_EXCEPTION_MISSING_METHOD;
227 error->class_name = g_strdup (class_name);
228 error->member_name = member_name;
230 set_loader_error (error);
234 * mono_loader_set_error_field_load:
236 * Set the loader error for this thread. MEMBER_NAME should point to a string
240 mono_loader_set_error_field_load (MonoClass *klass, const char *member_name)
242 MonoLoaderError *error;
244 /* FIXME: Store the signature as well */
245 if (mono_loader_get_last_error ())
248 error = g_new0 (MonoLoaderError, 1);
249 error->exception_type = MONO_EXCEPTION_MISSING_FIELD;
250 error->klass = klass;
251 error->member_name = member_name;
253 set_loader_error (error);
257 * mono_loader_set_error_bad_image:
259 * Set the loader error for this thread.
262 mono_loader_set_error_bad_image (char *msg)
264 MonoLoaderError *error;
266 if (mono_loader_get_last_error ())
269 error = g_new0 (MonoLoaderError, 1);
270 error->exception_type = MONO_EXCEPTION_BAD_IMAGE;
273 set_loader_error (error);
278 * mono_loader_get_last_error:
280 * Returns information about the last type load exception encountered by the loader, or
281 * NULL. After use, the exception should be cleared by calling mono_loader_clear_error.
284 mono_loader_get_last_error (void)
286 return (MonoLoaderError*)mono_native_tls_get_value (loader_error_thread_id);
290 * mono_loader_clear_error:
292 * Disposes any loader error messages on this thread
295 mono_loader_clear_error (void)
297 MonoLoaderError *ex = (MonoLoaderError*)mono_native_tls_get_value (loader_error_thread_id);
300 g_free (ex->class_name);
301 g_free (ex->assembly_name);
305 mono_native_tls_set_value (loader_error_thread_id, NULL);
310 * mono_loader_error_prepare_exception:
311 * @error: The MonoLoaderError to turn into an exception
313 * This turns a MonoLoaderError into an exception that can be thrown
314 * and resets the Mono Loader Error state during this process.
318 mono_loader_error_prepare_exception (MonoLoaderError *error)
320 MonoException *ex = NULL;
322 switch (error->exception_type) {
323 case MONO_EXCEPTION_TYPE_LOAD: {
324 char *cname = g_strdup (error->class_name);
325 char *aname = g_strdup (error->assembly_name);
326 MonoString *class_name;
328 mono_loader_clear_error ();
330 class_name = mono_string_new (mono_domain_get (), cname);
332 ex = mono_get_exception_type_load (class_name, aname);
337 case MONO_EXCEPTION_MISSING_METHOD: {
338 char *cname = g_strdup (error->class_name);
339 char *aname = g_strdup (error->member_name);
341 mono_loader_clear_error ();
342 ex = mono_get_exception_missing_method (cname, aname);
348 case MONO_EXCEPTION_MISSING_FIELD: {
350 char *cmembername = g_strdup (error->member_name);
352 class_name = mono_type_get_full_name (error->klass);
354 class_name = g_strdup ("");
356 mono_loader_clear_error ();
358 ex = mono_get_exception_missing_field (class_name, cmembername);
360 g_free (cmembername);
364 case MONO_EXCEPTION_FILE_NOT_FOUND: {
369 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);
371 msg = g_strdup_printf ("Could not load file or assembly '%s' or one of its dependencies.", error->assembly_name);
372 filename = g_strdup (error->assembly_name);
373 /* Has to call this before calling anything which might call mono_class_init () */
374 mono_loader_clear_error ();
375 ex = mono_get_exception_file_not_found2 (msg, mono_string_new (mono_domain_get (), filename));
381 case MONO_EXCEPTION_BAD_IMAGE: {
382 char *msg = g_strdup (error->msg);
383 mono_loader_clear_error ();
384 ex = mono_get_exception_bad_image_format (msg);
390 g_assert_not_reached ();
397 * find_cached_memberref_sig:
399 * Return a cached copy of the memberref signature identified by SIG_IDX.
400 * We use a gpointer since the cache stores both MonoTypes and MonoMethodSignatures.
401 * A cache is needed since the type/signature parsing routines allocate everything
402 * from a mempool, so without a cache, multiple requests for the same signature would
403 * lead to unbounded memory growth. For normal methods/fields this is not a problem
404 * since the resulting methods/fields are cached, but inflated methods/fields cannot
406 * LOCKING: Acquires the loader lock.
409 find_cached_memberref_sig (MonoImage *image, guint32 sig_idx)
413 mono_image_lock (image);
414 res = g_hash_table_lookup (image->memberref_signatures, GUINT_TO_POINTER (sig_idx));
415 mono_image_unlock (image);
421 cache_memberref_sig (MonoImage *image, guint32 sig_idx, gpointer sig)
425 mono_image_lock (image);
426 prev_sig = g_hash_table_lookup (image->memberref_signatures, GUINT_TO_POINTER (sig_idx));
428 /* Somebody got in before us */
432 g_hash_table_insert (image->memberref_signatures, GUINT_TO_POINTER (sig_idx), sig);
433 /* An approximation based on glib 2.18 */
434 memberref_sig_cache_size += sizeof (gpointer) * 4;
436 mono_image_unlock (image);
441 static MonoClassField*
442 field_from_memberref (MonoImage *image, guint32 token, MonoClass **retklass,
443 MonoGenericContext *context, MonoError *error)
445 MonoClass *klass = NULL;
446 MonoClassField *field;
447 MonoTableInfo *tables = image->tables;
450 guint32 nindex, class, class_table;
453 guint32 idx = mono_metadata_token_index (token);
455 mono_error_init (error);
457 mono_metadata_decode_row (&tables [MONO_TABLE_MEMBERREF], idx-1, cols, MONO_MEMBERREF_SIZE);
458 nindex = cols [MONO_MEMBERREF_CLASS] >> MONO_MEMBERREF_PARENT_BITS;
459 class = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
461 fname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
463 if (!mono_verifier_verify_memberref_field_signature (image, cols [MONO_MEMBERREF_SIGNATURE], NULL)) {
464 mono_error_set_bad_image (error, image, "Bad field '%s' signature 0x%08x", class, token);
469 case MONO_MEMBERREF_PARENT_TYPEDEF:
470 class_table = MONO_TOKEN_TYPE_DEF;
471 klass = mono_class_get_checked (image, MONO_TOKEN_TYPE_DEF | nindex, error);
473 case MONO_MEMBERREF_PARENT_TYPEREF:
474 class_table = MONO_TOKEN_TYPE_REF;
475 klass = mono_class_from_typeref_checked (image, MONO_TOKEN_TYPE_REF | nindex, error);
477 case MONO_MEMBERREF_PARENT_TYPESPEC:
478 class_table = MONO_TOKEN_TYPE_SPEC;
479 klass = mono_class_get_and_inflate_typespec_checked (image, MONO_TOKEN_TYPE_SPEC | nindex, context, error);
482 mono_error_set_bad_image (error, image, "Bad field field '%s' signature 0x%08x", class, token);
488 ptr = mono_metadata_blob_heap (image, cols [MONO_MEMBERREF_SIGNATURE]);
489 mono_metadata_decode_blob_size (ptr, &ptr);
490 /* we may want to check the signature here... */
493 mono_error_set_field_load (error, klass, fname, "Bad field signature class token %08x field name %s token %08x", class, fname, token);
497 /* FIXME: This needs a cache, especially for generic instances, since
498 * mono_metadata_parse_type () allocates everything from a mempool.
500 sig_type = find_cached_memberref_sig (image, cols [MONO_MEMBERREF_SIGNATURE]);
502 sig_type = mono_metadata_parse_type (image, MONO_PARSE_TYPE, 0, ptr, &ptr);
503 if (sig_type == NULL) {
504 mono_error_set_field_load (error, klass, fname, "Could not parse field '%s' signature %08x", fname, token);
507 sig_type = cache_memberref_sig (image, cols [MONO_MEMBERREF_SIGNATURE], sig_type);
510 mono_class_init (klass); /*FIXME is this really necessary?*/
513 field = mono_class_get_field_from_name_full (klass, fname, sig_type);
516 g_assert (!mono_loader_get_last_error ());
517 mono_error_set_field_load (error, klass, fname, "Could not find field '%s'", fname);
524 * mono_field_from_token:
525 * @deprecated use the _checked variant
528 mono_field_from_token (MonoImage *image, guint32 token, MonoClass **retklass, MonoGenericContext *context)
531 MonoClassField *res = mono_field_from_token_checked (image, token, retklass, context, &error);
532 g_assert (!mono_loader_get_last_error ());
533 if (!mono_error_ok (&error)) {
534 mono_loader_set_error_from_mono_error (&error);
535 mono_error_cleanup (&error);
541 mono_field_from_token_checked (MonoImage *image, guint32 token, MonoClass **retklass, MonoGenericContext *context, MonoError *error)
545 MonoClassField *field;
547 mono_error_init (error);
549 if (image_is_dynamic (image)) {
550 MonoClassField *result;
551 MonoClass *handle_class;
554 result = mono_lookup_dynamic_token_class (image, token, TRUE, &handle_class, context);
555 // This checks the memberref type as well
556 if (!result || handle_class != mono_defaults.fieldhandle_class) {
557 mono_error_set_bad_image (error, image, "Bad field token 0x%08x", token);
560 *retklass = result->parent;
564 if ((field = mono_conc_hashtable_lookup (image->field_cache, GUINT_TO_POINTER (token)))) {
565 *retklass = field->parent;
569 if (mono_metadata_token_table (token) == MONO_TABLE_MEMBERREF) {
570 field = field_from_memberref (image, token, retklass, context, error);
571 g_assert (!mono_loader_get_last_error ());
573 type = mono_metadata_typedef_from_field (image, mono_metadata_token_index (token));
575 mono_error_set_bad_image (error, image, "Invalid field token 0x%08x", token);
578 k = mono_class_get_checked (image, MONO_TOKEN_TYPE_DEF | type, error);
585 field = mono_class_get_field (k, token);
587 if (mono_loader_get_last_error ())
588 mono_loader_set_error_from_mono_error (error);
590 mono_error_set_bad_image (error, image, "Could not resolve field token 0x%08x", token);
594 if (field && field->parent && !field->parent->generic_class && !field->parent->generic_container)
595 mono_conc_hashtable_insert (image->field_cache, GUINT_TO_POINTER (token), field);
597 g_assert (!mono_loader_get_last_error ());
602 mono_metadata_signature_vararg_match (MonoMethodSignature *sig1, MonoMethodSignature *sig2)
606 if (sig1->hasthis != sig2->hasthis ||
607 sig1->sentinelpos != sig2->sentinelpos)
610 for (i = 0; i < sig1->sentinelpos; i++) {
611 MonoType *p1 = sig1->params[i];
612 MonoType *p2 = sig2->params[i];
614 /*if (p1->attrs != p2->attrs)
617 if (!mono_metadata_type_equal (p1, p2))
621 if (!mono_metadata_type_equal (sig1->ret, sig2->ret))
627 find_method_in_class (MonoClass *klass, const char *name, const char *qname, const char *fqname,
628 MonoMethodSignature *sig, MonoClass *from_class)
632 /* Search directly in the metadata to avoid calling setup_methods () */
634 /* FIXME: !from_class->generic_class condition causes test failures. */
635 if (klass->type_token && !image_is_dynamic (klass->image) && !klass->methods && !klass->rank && klass == from_class && !from_class->generic_class) {
636 for (i = 0; i < klass->method.count; ++i) {
637 guint32 cols [MONO_METHOD_SIZE];
640 MonoMethodSignature *other_sig;
642 mono_metadata_decode_table_row (klass->image, MONO_TABLE_METHOD, klass->method.first + i, cols, MONO_METHOD_SIZE);
644 m_name = mono_metadata_string_heap (klass->image, cols [MONO_METHOD_NAME]);
646 if (!((fqname && !strcmp (m_name, fqname)) ||
647 (qname && !strcmp (m_name, qname)) ||
648 (name && !strcmp (m_name, name))))
651 method = mono_get_method (klass->image, MONO_TOKEN_METHOD_DEF | (klass->method.first + i + 1), klass);
653 other_sig = mono_method_signature (method);
654 if (other_sig && (sig->call_convention != MONO_CALL_VARARG) && mono_metadata_signature_equal (sig, other_sig))
660 mono_class_setup_methods (klass);
662 We can't fail lookup of methods otherwise the runtime will fail with MissingMethodException instead of TypeLoadException.
663 See mono/tests/generic-type-load-exception.2.il
664 FIXME we should better report this error to the caller
668 for (i = 0; i < klass->method.count; ++i) {
669 MonoMethod *m = klass->methods [i];
670 MonoMethodSignature *msig;
672 /* We must cope with failing to load some of the types. */
676 if (!((fqname && !strcmp (m->name, fqname)) ||
677 (qname && !strcmp (m->name, qname)) ||
678 (name && !strcmp (m->name, name))))
680 msig = mono_method_signature (m);
684 if (sig->call_convention == MONO_CALL_VARARG) {
685 if (mono_metadata_signature_vararg_match (sig, msig))
688 if (mono_metadata_signature_equal (sig, msig))
693 if (i < klass->method.count)
694 return mono_class_get_method_by_index (from_class, i);
699 find_method (MonoClass *in_class, MonoClass *ic, const char* name, MonoMethodSignature *sig, MonoClass *from_class)
702 char *qname, *fqname, *class_name;
703 gboolean is_interface;
704 MonoMethod *result = NULL;
706 is_interface = MONO_CLASS_IS_INTERFACE (in_class);
709 class_name = mono_type_get_name_full (&ic->byval_arg, MONO_TYPE_NAME_FORMAT_IL);
711 qname = g_strconcat (class_name, ".", name, NULL);
712 if (ic->name_space && ic->name_space [0])
713 fqname = g_strconcat (ic->name_space, ".", class_name, ".", name, NULL);
717 class_name = qname = fqname = NULL;
720 g_assert (from_class);
721 result = find_method_in_class (in_class, name, qname, fqname, sig, from_class);
725 if (name [0] == '.' && (!strcmp (name, ".ctor") || !strcmp (name, ".cctor")))
729 * This happens when we fail to lazily load the interfaces of one of the types.
730 * On such case we can't just bail out since user code depends on us trying harder.
732 if (from_class->interface_offsets_count != in_class->interface_offsets_count) {
733 in_class = in_class->parent;
734 from_class = from_class->parent;
738 for (i = 0; i < in_class->interface_offsets_count; i++) {
739 MonoClass *in_ic = in_class->interfaces_packed [i];
740 MonoClass *from_ic = from_class->interfaces_packed [i];
741 char *ic_qname, *ic_fqname, *ic_class_name;
743 ic_class_name = mono_type_get_name_full (&in_ic->byval_arg, MONO_TYPE_NAME_FORMAT_IL);
744 ic_qname = g_strconcat (ic_class_name, ".", name, NULL);
745 if (in_ic->name_space && in_ic->name_space [0])
746 ic_fqname = g_strconcat (in_ic->name_space, ".", ic_class_name, ".", name, NULL);
750 result = find_method_in_class (in_ic, ic ? name : NULL, ic_qname, ic_fqname, sig, from_ic);
751 g_free (ic_class_name);
758 in_class = in_class->parent;
759 from_class = from_class->parent;
761 g_assert (!in_class == !from_class);
764 result = find_method_in_class (mono_defaults.object_class, name, qname, fqname, sig, mono_defaults.object_class);
773 static MonoMethodSignature*
774 inflate_generic_signature_checked (MonoImage *image, MonoMethodSignature *sig, MonoGenericContext *context, MonoError *error)
776 MonoMethodSignature *res;
780 mono_error_init (error);
784 res = g_malloc0 (MONO_SIZEOF_METHOD_SIGNATURE + ((gint32)sig->param_count) * sizeof (MonoType*));
785 res->param_count = sig->param_count;
786 res->sentinelpos = -1;
787 res->ret = mono_class_inflate_generic_type_checked (sig->ret, context, error);
788 if (!mono_error_ok (error))
790 is_open = mono_class_is_open_constructed_type (res->ret);
791 for (i = 0; i < sig->param_count; ++i) {
792 res->params [i] = mono_class_inflate_generic_type_checked (sig->params [i], context, error);
793 if (!mono_error_ok (error))
797 is_open = mono_class_is_open_constructed_type (res->params [i]);
799 res->hasthis = sig->hasthis;
800 res->explicit_this = sig->explicit_this;
801 res->call_convention = sig->call_convention;
802 res->pinvoke = sig->pinvoke;
803 res->generic_param_count = sig->generic_param_count;
804 res->sentinelpos = sig->sentinelpos;
805 res->has_type_parameters = is_open;
806 res->is_inflated = 1;
811 mono_metadata_free_type (res->ret);
812 for (i = 0; i < sig->param_count; ++i) {
814 mono_metadata_free_type (res->params [i]);
821 * mono_inflate_generic_signature:
823 * Inflate SIG with CONTEXT, and return a canonical copy. On error, set ERROR, and return NULL.
826 mono_inflate_generic_signature (MonoMethodSignature *sig, MonoGenericContext *context, MonoError *error)
828 MonoMethodSignature *res, *cached;
830 res = inflate_generic_signature_checked (NULL, sig, context, error);
831 if (!mono_error_ok (error))
833 cached = mono_metadata_get_inflated_signature (res, context);
835 mono_metadata_free_inflated_signature (res);
839 static MonoMethodHeader*
840 inflate_generic_header (MonoMethodHeader *header, MonoGenericContext *context)
842 MonoMethodHeader *res;
844 res = g_malloc0 (MONO_SIZEOF_METHOD_HEADER + sizeof (gpointer) * header->num_locals);
845 res->code = header->code;
846 res->code_size = header->code_size;
847 res->max_stack = header->max_stack;
848 res->num_clauses = header->num_clauses;
849 res->init_locals = header->init_locals;
850 res->num_locals = header->num_locals;
851 res->clauses = header->clauses;
852 for (i = 0; i < header->num_locals; ++i)
853 res->locals [i] = mono_class_inflate_generic_type (header->locals [i], context);
854 if (res->num_clauses) {
855 res->clauses = g_memdup (header->clauses, sizeof (MonoExceptionClause) * res->num_clauses);
856 for (i = 0; i < header->num_clauses; ++i) {
857 MonoExceptionClause *clause = &res->clauses [i];
858 if (clause->flags != MONO_EXCEPTION_CLAUSE_NONE)
860 clause->data.catch_class = mono_class_inflate_generic_class (clause->data.catch_class, context);
867 * token is the method_ref/def/spec token used in a call IL instruction.
870 mono_method_get_signature_full (MonoMethod *method, MonoImage *image, guint32 token, MonoGenericContext *context)
873 MonoMethodSignature *res = mono_method_get_signature_checked (method, image, token, context, &error);
875 g_assert (!mono_loader_get_last_error ());
878 g_assert (!mono_error_ok (&error));
879 mono_loader_set_error_from_mono_error (&error);
880 mono_error_cleanup (&error); /* FIXME Don't swallow the error */
886 mono_method_get_signature_checked (MonoMethod *method, MonoImage *image, guint32 token, MonoGenericContext *context, MonoError *error)
888 int table = mono_metadata_token_table (token);
889 int idx = mono_metadata_token_index (token);
891 guint32 cols [MONO_MEMBERREF_SIZE];
892 MonoMethodSignature *sig;
895 mono_error_init (error);
897 /* !table is for wrappers: we should really assign their own token to them */
898 if (!table || table == MONO_TABLE_METHOD)
899 return mono_method_signature_checked (method, error);
901 if (table == MONO_TABLE_METHODSPEC) {
902 /* the verifier (do_invoke_method) will turn the NULL into a verifier error */
903 if ((method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) || !method->is_inflated)
906 return mono_method_signature_checked (method, error);
909 if (method->klass->generic_class)
910 return mono_method_signature_checked (method, error);
912 if (image_is_dynamic (image)) {
913 sig = mono_reflection_lookup_signature (image, method, token, error);
917 mono_metadata_decode_row (&image->tables [MONO_TABLE_MEMBERREF], idx-1, cols, MONO_MEMBERREF_SIZE);
918 sig_idx = cols [MONO_MEMBERREF_SIGNATURE];
920 sig = find_cached_memberref_sig (image, sig_idx);
922 if (!mono_verifier_verify_memberref_method_signature (image, sig_idx, NULL)) {
923 guint32 class = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
924 const char *fname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
926 //FIXME include the verification error
927 mono_error_set_bad_image (error, image, "Bad method signature class token 0x%08x field name %s token 0x%08x", class, fname, token);
931 ptr = mono_metadata_blob_heap (image, sig_idx);
932 mono_metadata_decode_blob_size (ptr, &ptr);
933 /* FIXME make type/signature parsing not produce loader errors */
934 sig = mono_metadata_parse_method_signature (image, 0, ptr, NULL);
935 g_assert (!mono_loader_get_last_error ());
938 guint32 class = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
939 const char *fname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
940 //FIXME include the decoding error
941 mono_error_set_bad_image (error, image, "Bad method signature class token 0x%08x field name %s token 0x%08x", class, fname, token);
944 sig = cache_memberref_sig (image, sig_idx, sig);
946 /* FIXME: we probably should verify signature compat in the dynamic case too*/
947 if (!mono_verifier_is_sig_compatible (image, method, sig)) {
948 guint32 class = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
949 const char *fname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
951 mono_error_set_bad_image (error, image, "Incompatible method signature class token 0x%08x field name %s token 0x%08x", class, fname, token);
957 MonoMethodSignature *cached;
959 /* This signature is not owned by a MonoMethod, so need to cache */
960 sig = inflate_generic_signature_checked (image, sig, context, error);
961 if (!mono_error_ok (error))
964 cached = mono_metadata_get_inflated_signature (sig, context);
966 mono_metadata_free_inflated_signature (sig);
968 inflated_signatures_size += mono_metadata_signature_size (cached);
972 g_assert (mono_error_ok (error));
977 mono_method_get_signature (MonoMethod *method, MonoImage *image, guint32 token)
980 MonoMethodSignature *res = mono_method_get_signature_checked (method, image, token, NULL, &error);
982 g_assert (!mono_loader_get_last_error ());
985 g_assert (!mono_error_ok (&error));
986 mono_loader_set_error_from_mono_error (&error);
987 mono_error_cleanup (&error); /* FIXME Don't swallow the error */
992 /* this is only for the typespec array methods */
994 mono_method_search_in_array_class (MonoClass *klass, const char *name, MonoMethodSignature *sig)
998 mono_class_setup_methods (klass);
999 g_assert (!klass->exception_type); /*FIXME this should not fail, right?*/
1000 for (i = 0; i < klass->method.count; ++i) {
1001 MonoMethod *method = klass->methods [i];
1002 if (strcmp (method->name, name) == 0 && sig->param_count == method->signature->param_count)
1009 method_from_memberref (MonoImage *image, guint32 idx, MonoGenericContext *typespec_context,
1010 gboolean *used_context)
1012 MonoClass *klass = NULL;
1013 MonoMethod *method = NULL;
1014 MonoTableInfo *tables = image->tables;
1016 guint32 nindex, class, sig_idx;
1018 MonoMethodSignature *sig;
1022 mono_metadata_decode_row (&tables [MONO_TABLE_MEMBERREF], idx-1, cols, 3);
1023 nindex = cols [MONO_MEMBERREF_CLASS] >> MONO_MEMBERREF_PARENT_BITS;
1024 class = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
1025 /*g_print ("methodref: 0x%x 0x%x %s\n", class, nindex,
1026 mono_metadata_string_heap (m, cols [MONO_MEMBERREF_NAME]));*/
1028 mname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
1031 * Whether we actually used the `typespec_context' or not.
1032 * This is used to tell our caller whether or not it's safe to insert the returned
1033 * method into a cache.
1036 *used_context = class == MONO_MEMBERREF_PARENT_TYPESPEC;
1039 case MONO_MEMBERREF_PARENT_TYPEREF:
1040 klass = mono_class_from_typeref_checked (image, MONO_TOKEN_TYPE_REF | nindex, &error);
1042 mono_loader_set_error_from_mono_error (&error);
1043 mono_error_cleanup (&error); /* FIXME Don't swallow the error */
1047 case MONO_MEMBERREF_PARENT_TYPESPEC:
1049 * Parse the TYPESPEC in the parent's context.
1051 klass = mono_class_get_and_inflate_typespec_checked (image, MONO_TOKEN_TYPE_SPEC | nindex, typespec_context, &error);
1053 mono_loader_set_error_from_mono_error (&error);
1054 mono_error_cleanup (&error); /*FIXME don't swallow the error message*/
1058 case MONO_MEMBERREF_PARENT_TYPEDEF:
1059 klass = mono_class_get_checked (image, MONO_TOKEN_TYPE_DEF | nindex, &error);
1061 mono_loader_set_error_from_mono_error (&error);
1062 mono_error_cleanup (&error); /*FIXME don't swallow the error message*/
1066 case MONO_MEMBERREF_PARENT_METHODDEF:
1067 return mono_get_method (image, MONO_TOKEN_METHOD_DEF | nindex, NULL);
1071 /* This message leaks */
1072 char *message = g_strdup_printf ("Memberref parent unknown: class: %d, index %d", class, nindex);
1073 mono_loader_set_error_method_load ("", message);
1079 mono_class_init (klass);
1081 sig_idx = cols [MONO_MEMBERREF_SIGNATURE];
1083 if (!mono_verifier_verify_memberref_method_signature (image, sig_idx, NULL)) {
1084 mono_loader_set_error_method_load (klass->name, mname);
1088 ptr = mono_metadata_blob_heap (image, sig_idx);
1089 mono_metadata_decode_blob_size (ptr, &ptr);
1091 sig = find_cached_memberref_sig (image, sig_idx);
1093 sig = mono_metadata_parse_method_signature (image, 0, ptr, NULL);
1097 sig = cache_memberref_sig (image, sig_idx, sig);
1101 case MONO_MEMBERREF_PARENT_TYPEREF:
1102 case MONO_MEMBERREF_PARENT_TYPEDEF:
1103 method = find_method (klass, NULL, mname, sig, klass);
1106 case MONO_MEMBERREF_PARENT_TYPESPEC: {
1109 type = &klass->byval_arg;
1111 if (type->type != MONO_TYPE_ARRAY && type->type != MONO_TYPE_SZARRAY) {
1112 MonoClass *in_class = klass->generic_class ? klass->generic_class->container_class : klass;
1113 method = find_method (in_class, NULL, mname, sig, klass);
1117 /* we're an array and we created these methods already in klass in mono_class_init () */
1118 method = mono_method_search_in_array_class (klass, mname, sig);
1122 g_error ("Memberref parent unknown: class: %d, index %d", class, nindex);
1123 g_assert_not_reached ();
1127 char *msig = mono_signature_get_desc (sig, FALSE);
1128 char * class_name = mono_type_get_name (&klass->byval_arg);
1129 GString *s = g_string_new (mname);
1130 if (sig->generic_param_count)
1131 g_string_append_printf (s, "<[%d]>", sig->generic_param_count);
1132 g_string_append_printf (s, "(%s)", msig);
1134 msig = g_string_free (s, FALSE);
1137 "Missing method %s::%s in assembly %s, referenced in assembly %s",
1138 class_name, msig, klass->image->name, image->name);
1139 mono_loader_set_error_method_load (class_name, mname);
1141 g_free (class_name);
1148 method_from_methodspec (MonoImage *image, MonoGenericContext *context, guint32 idx)
1153 MonoTableInfo *tables = image->tables;
1154 MonoGenericContext new_context;
1155 MonoGenericInst *inst;
1157 guint32 cols [MONO_METHODSPEC_SIZE];
1158 guint32 token, nindex, param_count;
1160 mono_metadata_decode_row (&tables [MONO_TABLE_METHODSPEC], idx - 1, cols, MONO_METHODSPEC_SIZE);
1161 token = cols [MONO_METHODSPEC_METHOD];
1162 nindex = token >> MONO_METHODDEFORREF_BITS;
1164 if (!mono_verifier_verify_methodspec_signature (image, cols [MONO_METHODSPEC_SIGNATURE], NULL))
1167 ptr = mono_metadata_blob_heap (image, cols [MONO_METHODSPEC_SIGNATURE]);
1169 mono_metadata_decode_value (ptr, &ptr);
1171 param_count = mono_metadata_decode_value (ptr, &ptr);
1173 inst = mono_metadata_parse_generic_inst (image, NULL, param_count, ptr, &ptr);
1177 if (context && inst->is_open) {
1178 inst = mono_metadata_inflate_generic_inst (inst, context, &error);
1179 if (!mono_error_ok (&error)) {
1180 mono_error_cleanup (&error); /*FIXME don't swallow error message.*/
1185 if ((token & MONO_METHODDEFORREF_MASK) == MONO_METHODDEFORREF_METHODDEF)
1186 method = mono_get_method_full (image, MONO_TOKEN_METHOD_DEF | nindex, NULL, context);
1188 method = method_from_memberref (image, nindex, context, NULL);
1193 klass = method->klass;
1195 if (klass->generic_class) {
1196 g_assert (method->is_inflated);
1197 method = ((MonoMethodInflated *) method)->declaring;
1200 new_context.class_inst = klass->generic_class ? klass->generic_class->context.class_inst : NULL;
1201 new_context.method_inst = inst;
1203 return mono_class_inflate_generic_method_full (method, klass, &new_context);
1206 struct _MonoDllMap {
1214 static MonoDllMap *global_dll_map;
1217 mono_dllmap_lookup_list (MonoDllMap *dll_map, const char *dll, const char* func, const char **rdll, const char **rfunc) {
1225 global_loader_data_lock ();
1228 * we use the first entry we find that matches, since entries from
1229 * the config file are prepended to the list and we document that the
1230 * later entries win.
1232 for (; dll_map; dll_map = dll_map->next) {
1233 if (dll_map->dll [0] == 'i' && dll_map->dll [1] == ':') {
1234 if (g_ascii_strcasecmp (dll_map->dll + 2, dll))
1236 } else if (strcmp (dll_map->dll, dll)) {
1239 if (!found && dll_map->target) {
1240 *rdll = dll_map->target;
1242 /* we don't quit here, because we could find a full
1243 * entry that matches also function and that has priority.
1246 if (dll_map->func && strcmp (dll_map->func, func) == 0) {
1247 *rfunc = dll_map->target_func;
1252 global_loader_data_unlock ();
1257 mono_dllmap_lookup (MonoImage *assembly, const char *dll, const char* func, const char **rdll, const char **rfunc)
1260 if (assembly && assembly->dll_map) {
1261 res = mono_dllmap_lookup_list (assembly->dll_map, dll, func, rdll, rfunc);
1265 return mono_dllmap_lookup_list (global_dll_map, dll, func, rdll, rfunc);
1269 * mono_dllmap_insert:
1270 * @assembly: if NULL, this is a global mapping, otherwise the remapping of the dynamic library will only apply to the specified assembly
1271 * @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
1272 * @func: if not null, the mapping will only applied to the named function (the value of EntryPoint)
1273 * @tdll: The name of the library to map the specified @dll if it matches.
1274 * @tfunc: if func is not NULL, the name of the function that replaces the invocation
1276 * LOCKING: Acquires the loader lock.
1278 * This function is used to programatically add DllImport remapping in either
1279 * a specific assembly, or as a global remapping. This is done by remapping
1280 * references in a DllImport attribute from the @dll library name into the @tdll
1281 * name. If the @dll name contains the prefix "i:", the comparison of the
1282 * library name is done without case sensitivity.
1284 * If you pass @func, this is the name of the EntryPoint in a DllImport if specified
1285 * or the name of the function as determined by DllImport. If you pass @func, you
1286 * must also pass @tfunc which is the name of the target function to invoke on a match.
1289 * mono_dllmap_insert (NULL, "i:libdemo.dll", NULL, relocated_demo_path, NULL);
1291 * The above will remap DllImport statments for "libdemo.dll" and "LIBDEMO.DLL" to
1292 * the contents of relocated_demo_path for all assemblies in the Mono process.
1294 * NOTE: This can be called before the runtime is initialized, for example from
1295 * mono_config_parse ().
1298 mono_dllmap_insert (MonoImage *assembly, const char *dll, const char *func, const char *tdll, const char *tfunc)
1302 mono_loader_init ();
1305 entry = g_malloc0 (sizeof (MonoDllMap));
1306 entry->dll = dll? g_strdup (dll): NULL;
1307 entry->target = tdll? g_strdup (tdll): NULL;
1308 entry->func = func? g_strdup (func): NULL;
1309 entry->target_func = tfunc? g_strdup (tfunc): NULL;
1311 global_loader_data_lock ();
1312 entry->next = global_dll_map;
1313 global_dll_map = entry;
1314 global_loader_data_unlock ();
1316 entry = mono_image_alloc0 (assembly, sizeof (MonoDllMap));
1317 entry->dll = dll? mono_image_strdup (assembly, dll): NULL;
1318 entry->target = tdll? mono_image_strdup (assembly, tdll): NULL;
1319 entry->func = func? mono_image_strdup (assembly, func): NULL;
1320 entry->target_func = tfunc? mono_image_strdup (assembly, tfunc): NULL;
1322 mono_image_lock (assembly);
1323 entry->next = assembly->dll_map;
1324 assembly->dll_map = entry;
1325 mono_image_unlock (assembly);
1330 free_dllmap (MonoDllMap *map)
1333 MonoDllMap *next = map->next;
1336 g_free (map->target);
1338 g_free (map->target_func);
1345 dllmap_cleanup (void)
1347 free_dllmap (global_dll_map);
1348 global_dll_map = NULL;
1351 static GHashTable *global_module_map;
1354 cached_module_load (const char *name, int flags, char **err)
1360 global_loader_data_lock ();
1361 if (!global_module_map)
1362 global_module_map = g_hash_table_new (g_str_hash, g_str_equal);
1363 res = g_hash_table_lookup (global_module_map, name);
1365 global_loader_data_unlock ();
1368 res = mono_dl_open (name, flags, err);
1370 g_hash_table_insert (global_module_map, g_strdup (name), res);
1371 global_loader_data_unlock ();
1375 static MonoDl *internal_module;
1378 is_absolute_path (const char *path)
1380 #ifdef PLATFORM_MACOSX
1381 if (!strncmp (path, "@executable_path/", 17) || !strncmp (path, "@loader_path/", 13) ||
1382 !strncmp (path, "@rpath/", 7))
1385 return g_path_is_absolute (path);
1389 mono_lookup_pinvoke_call (MonoMethod *method, const char **exc_class, const char **exc_arg)
1391 MonoImage *image = method->klass->image;
1392 MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *)method;
1393 MonoTableInfo *tables = image->tables;
1394 MonoTableInfo *im = &tables [MONO_TABLE_IMPLMAP];
1395 MonoTableInfo *mr = &tables [MONO_TABLE_MODULEREF];
1396 guint32 im_cols [MONO_IMPLMAP_SIZE];
1397 guint32 scope_token;
1398 const char *import = NULL;
1399 const char *orig_scope;
1400 const char *new_scope;
1402 char *full_name, *file_name, *found_name = NULL;
1404 MonoDl *module = NULL;
1405 gboolean cached = FALSE;
1407 g_assert (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL);
1415 return piinfo->addr;
1417 if (image_is_dynamic (method->klass->image)) {
1418 MonoReflectionMethodAux *method_aux =
1419 g_hash_table_lookup (
1420 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
1424 import = method_aux->dllentry;
1425 orig_scope = method_aux->dll;
1428 if (!piinfo->implmap_idx || piinfo->implmap_idx > im->rows)
1431 mono_metadata_decode_row (im, piinfo->implmap_idx - 1, im_cols, MONO_IMPLMAP_SIZE);
1433 if (!im_cols [MONO_IMPLMAP_SCOPE] || im_cols [MONO_IMPLMAP_SCOPE] > mr->rows)
1436 piinfo->piflags = im_cols [MONO_IMPLMAP_FLAGS];
1437 import = mono_metadata_string_heap (image, im_cols [MONO_IMPLMAP_NAME]);
1438 scope_token = mono_metadata_decode_row_col (mr, im_cols [MONO_IMPLMAP_SCOPE] - 1, MONO_MODULEREF_NAME);
1439 orig_scope = mono_metadata_string_heap (image, scope_token);
1442 mono_dllmap_lookup (image, orig_scope, import, &new_scope, &import);
1445 mono_image_lock (image);
1446 if (!image->pinvoke_scopes) {
1447 image->pinvoke_scopes = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL);
1448 image->pinvoke_scope_filenames = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
1450 module = g_hash_table_lookup (image->pinvoke_scopes, new_scope);
1451 found_name = g_hash_table_lookup (image->pinvoke_scope_filenames, new_scope);
1452 mono_image_unlock (image);
1456 found_name = g_strdup (found_name);
1460 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1461 "DllImport attempting to load: '%s'.", new_scope);
1463 /* we allow a special name to dlopen from the running process namespace */
1464 if (strcmp (new_scope, "__Internal") == 0){
1465 if (internal_module == NULL)
1466 internal_module = mono_dl_open (NULL, MONO_DL_LAZY, &error_msg);
1467 module = internal_module;
1472 * Try loading the module using a variety of names
1474 for (i = 0; i < 4; ++i) {
1475 char *base_name = NULL, *dir_name = NULL;
1476 gboolean is_absolute = is_absolute_path (new_scope);
1480 /* Try the original name */
1481 file_name = g_strdup (new_scope);
1484 /* Try trimming the .dll extension */
1485 if (strstr (new_scope, ".dll") == (new_scope + strlen (new_scope) - 4)) {
1486 file_name = g_strdup (new_scope);
1487 file_name [strlen (new_scope) - 4] = '\0';
1494 dir_name = g_path_get_dirname (new_scope);
1495 base_name = g_path_get_basename (new_scope);
1496 if (strstr (base_name, "lib") != base_name) {
1497 char *tmp = g_strdup_printf ("lib%s", base_name);
1500 file_name = g_strdup_printf ("%s%s%s", dir_name, G_DIR_SEPARATOR_S, base_name);
1503 } else if (strstr (new_scope, "lib") != new_scope) {
1504 file_name = g_strdup_printf ("lib%s", new_scope);
1509 #ifndef TARGET_WIN32
1510 if (!g_ascii_strcasecmp ("user32.dll", new_scope) ||
1511 !g_ascii_strcasecmp ("kernel32.dll", new_scope) ||
1512 !g_ascii_strcasecmp ("user32", new_scope) ||
1513 !g_ascii_strcasecmp ("kernel", new_scope)) {
1514 file_name = g_strdup ("libMonoSupportW.so");
1518 #ifndef TARGET_WIN32
1525 dir_name = g_path_get_dirname (file_name);
1527 base_name = g_path_get_basename (file_name);
1530 if (!module && is_absolute) {
1531 module = cached_module_load (file_name, MONO_DL_LAZY, &error_msg);
1533 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1534 "DllImport error loading library '%s': '%s'.",
1535 file_name, error_msg);
1538 found_name = g_strdup (file_name);
1542 if (!module && !is_absolute) {
1544 char *mdirname = g_path_get_dirname (image->name);
1545 while ((full_name = mono_dl_build_path (mdirname, file_name, &iter))) {
1546 module = cached_module_load (full_name, MONO_DL_LAZY, &error_msg);
1548 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1549 "DllImport error loading library '%s': '%s'.",
1550 full_name, error_msg);
1553 found_name = g_strdup (full_name);
1564 char *file_or_base = is_absolute ? base_name : file_name;
1565 while ((full_name = mono_dl_build_path (dir_name, file_or_base, &iter))) {
1566 module = cached_module_load (full_name, MONO_DL_LAZY, &error_msg);
1568 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1569 "DllImport error loading library '%s': '%s'.",
1570 full_name, error_msg);
1573 found_name = g_strdup (full_name);
1582 module = cached_module_load (file_name, MONO_DL_LAZY, &error_msg);
1584 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1585 "DllImport error loading library '%s': '%s'.",
1586 file_name, error_msg);
1588 found_name = g_strdup (file_name);
1603 mono_trace (G_LOG_LEVEL_WARNING, MONO_TRACE_DLLIMPORT,
1604 "DllImport unable to load library '%s'.",
1609 *exc_class = "DllNotFoundException";
1610 *exc_arg = new_scope;
1616 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1617 "DllImport loaded library '%s'.", found_name);
1618 mono_image_lock (image);
1619 if (!g_hash_table_lookup (image->pinvoke_scopes, new_scope)) {
1620 g_hash_table_insert (image->pinvoke_scopes, g_strdup (new_scope), module);
1621 g_hash_table_insert (image->pinvoke_scope_filenames, g_strdup (new_scope), g_strdup (found_name));
1623 mono_image_unlock (image);
1626 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1627 "DllImport searching in: '%s' ('%s').", new_scope, found_name);
1628 g_free (found_name);
1631 if (import && import [0] == '#' && isdigit (import [1])) {
1635 id = strtol (import + 1, &end, 10);
1636 if (id > 0 && *end == '\0')
1640 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1641 "Searching for '%s'.", import);
1643 if (piinfo->piflags & PINVOKE_ATTRIBUTE_NO_MANGLE) {
1644 error_msg = mono_dl_symbol (module, import, &piinfo->addr);
1646 char *mangled_name = NULL, *mangled_name2 = NULL;
1649 int mangle_param_count;
1655 * Search using a variety of mangled names
1657 for (mangle_charset = 0; mangle_charset <= 1; mangle_charset ++) {
1658 for (mangle_stdcall = 0; mangle_stdcall <= 1; mangle_stdcall ++) {
1659 gboolean need_param_count = FALSE;
1661 if (mangle_stdcall > 0)
1662 need_param_count = TRUE;
1664 for (mangle_param_count = 0; mangle_param_count <= (need_param_count ? 256 : 0); mangle_param_count += 4) {
1669 mangled_name = (char*)import;
1670 switch (piinfo->piflags & PINVOKE_ATTRIBUTE_CHAR_SET_MASK) {
1671 case PINVOKE_ATTRIBUTE_CHAR_SET_UNICODE:
1672 /* Try the mangled name first */
1673 if (mangle_charset == 0)
1674 mangled_name = g_strconcat (import, "W", NULL);
1676 case PINVOKE_ATTRIBUTE_CHAR_SET_AUTO:
1678 if (mangle_charset == 0)
1679 mangled_name = g_strconcat (import, "W", NULL);
1681 /* Try the mangled name last */
1682 if (mangle_charset == 1)
1683 mangled_name = g_strconcat (import, "A", NULL);
1686 case PINVOKE_ATTRIBUTE_CHAR_SET_ANSI:
1688 /* Try the mangled name last */
1689 if (mangle_charset == 1)
1690 mangled_name = g_strconcat (import, "A", NULL);
1695 if (mangle_param_count == 0)
1696 param_count = mono_method_signature (method)->param_count * sizeof (gpointer);
1698 /* Try brute force, since it would be very hard to compute the stack usage correctly */
1699 param_count = mangle_param_count;
1701 /* Try the stdcall mangled name */
1703 * gcc under windows creates mangled names without the underscore, but MS.NET
1704 * doesn't support it, so we doesn't support it either.
1706 if (mangle_stdcall == 1)
1707 mangled_name2 = g_strdup_printf ("_%s@%d", mangled_name, param_count);
1709 mangled_name2 = mangled_name;
1711 mangled_name2 = mangled_name;
1714 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1715 "Probing '%s'.", mangled_name2);
1717 error_msg = mono_dl_symbol (module, mangled_name2, &piinfo->addr);
1722 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1723 "Found as '%s'.", mangled_name2);
1725 if (mangled_name != mangled_name2)
1726 g_free (mangled_name2);
1727 if (mangled_name != import)
1728 g_free (mangled_name);
1734 if (!piinfo->addr) {
1737 *exc_class = "EntryPointNotFoundException";
1742 return piinfo->addr;
1746 * LOCKING: assumes the loader lock to be taken.
1749 mono_get_method_from_token (MonoImage *image, guint32 token, MonoClass *klass,
1750 MonoGenericContext *context, gboolean *used_context)
1754 int table = mono_metadata_token_table (token);
1755 int idx = mono_metadata_token_index (token);
1756 MonoTableInfo *tables = image->tables;
1757 MonoGenericContainer *generic_container = NULL, *container = NULL;
1758 const char *sig = NULL;
1760 guint32 cols [MONO_TYPEDEF_SIZE];
1762 if (image_is_dynamic (image)) {
1763 MonoClass *handle_class;
1765 result = mono_lookup_dynamic_token_class (image, token, TRUE, &handle_class, context);
1766 // This checks the memberref type as well
1767 if (result && handle_class != mono_defaults.methodhandle_class) {
1768 mono_loader_set_error_bad_image (g_strdup_printf ("Bad method token 0x%08x on image %s.", token, image->name));
1774 if (table != MONO_TABLE_METHOD) {
1775 if (table == MONO_TABLE_METHODSPEC) {
1776 if (used_context) *used_context = TRUE;
1777 return method_from_methodspec (image, context, idx);
1779 if (table != MONO_TABLE_MEMBERREF) {
1780 g_warning ("got wrong token: 0x%08x\n", token);
1781 mono_loader_set_error_bad_image (g_strdup_printf ("Bad method token 0x%08x on image %s.", token, image->name));
1784 return method_from_memberref (image, idx, context, used_context);
1787 if (used_context) *used_context = FALSE;
1789 if (idx > image->tables [MONO_TABLE_METHOD].rows) {
1790 mono_loader_set_error_bad_image (g_strdup_printf ("Bad method token 0x%08x on image %s.", token, image->name));
1795 guint32 type = mono_metadata_typedef_from_method (image, token);
1798 klass = mono_class_get_checked (image, MONO_TOKEN_TYPE_DEF | type, &error);
1799 if (klass == NULL) {
1800 mono_loader_set_error_from_mono_error (&error);
1801 mono_error_cleanup (&error); /*FIXME don't swallow the error message*/
1806 mono_metadata_decode_row (&image->tables [MONO_TABLE_METHOD], idx - 1, cols, 6);
1808 if ((cols [2] & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
1809 (cols [1] & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL)) {
1810 result = (MonoMethod *)mono_image_alloc0 (image, sizeof (MonoMethodPInvoke));
1812 result = (MonoMethod *)mono_image_alloc0 (image, sizeof (MonoMethod));
1813 methods_size += sizeof (MonoMethod);
1816 mono_stats.method_count ++;
1819 result->klass = klass;
1820 result->flags = cols [2];
1821 result->iflags = cols [1];
1822 result->token = token;
1823 result->name = mono_metadata_string_heap (image, cols [3]);
1825 if (!sig) /* already taken from the methodref */
1826 sig = mono_metadata_blob_heap (image, cols [4]);
1827 size = mono_metadata_decode_blob_size (sig, &sig);
1829 container = klass->generic_container;
1832 * load_generic_params does a binary search so only call it if the method
1836 generic_container = mono_metadata_load_generic_params (image, token, container);
1837 if (generic_container) {
1839 result->is_generic = TRUE;
1840 generic_container->owner.method = result;
1841 /*FIXME put this before the image alloc*/
1842 if (!mono_metadata_load_generic_param_constraints_checked (image, token, generic_container, &error)) {
1843 mono_loader_set_error_from_mono_error (&error);
1844 mono_error_cleanup (&error); /*FIXME don't swallow the error message*/
1848 container = generic_container;
1851 if (cols [1] & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) {
1852 if (result->klass == mono_defaults.string_class && !strcmp (result->name, ".ctor"))
1853 result->string_ctor = 1;
1854 } else if (cols [2] & METHOD_ATTRIBUTE_PINVOKE_IMPL) {
1855 MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *)result;
1858 /* IJW is P/Invoke with a predefined function pointer. */
1859 if (image->is_module_handle && (cols [1] & METHOD_IMPL_ATTRIBUTE_NATIVE)) {
1860 piinfo->addr = mono_image_rva_map (image, cols [0]);
1861 g_assert (piinfo->addr);
1864 piinfo->implmap_idx = mono_metadata_implmap_from_method (image, idx - 1);
1865 /* Native methods can have no map. */
1866 if (piinfo->implmap_idx)
1867 piinfo->piflags = mono_metadata_decode_row_col (&tables [MONO_TABLE_IMPLMAP], piinfo->implmap_idx - 1, MONO_IMPLMAP_FLAGS);
1870 if (generic_container)
1871 mono_method_set_generic_container (result, generic_container);
1877 mono_get_method (MonoImage *image, guint32 token, MonoClass *klass)
1879 return mono_get_method_full (image, token, klass, NULL);
1883 mono_get_method_full (MonoImage *image, guint32 token, MonoClass *klass,
1884 MonoGenericContext *context)
1886 MonoMethod *result = NULL;
1887 gboolean used_context = FALSE;
1889 /* We do everything inside the lock to prevent creation races */
1891 mono_image_lock (image);
1893 if (mono_metadata_token_table (token) == MONO_TABLE_METHOD) {
1894 if (!image->method_cache)
1895 image->method_cache = g_hash_table_new (NULL, NULL);
1896 result = g_hash_table_lookup (image->method_cache, GINT_TO_POINTER (mono_metadata_token_index (token)));
1897 } else if (!image_is_dynamic (image)) {
1898 if (!image->methodref_cache)
1899 image->methodref_cache = g_hash_table_new (NULL, NULL);
1900 result = g_hash_table_lookup (image->methodref_cache, GINT_TO_POINTER (token));
1902 mono_image_unlock (image);
1908 result = mono_get_method_from_token (image, token, klass, context, &used_context);
1912 mono_image_lock (image);
1913 if (!used_context && !result->is_inflated) {
1914 MonoMethod *result2 = NULL;
1916 if (mono_metadata_token_table (token) == MONO_TABLE_METHOD)
1917 result2 = g_hash_table_lookup (image->method_cache, GINT_TO_POINTER (mono_metadata_token_index (token)));
1918 else if (!image_is_dynamic (image))
1919 result2 = g_hash_table_lookup (image->methodref_cache, GINT_TO_POINTER (token));
1922 mono_image_unlock (image);
1926 if (mono_metadata_token_table (token) == MONO_TABLE_METHOD)
1927 g_hash_table_insert (image->method_cache, GINT_TO_POINTER (mono_metadata_token_index (token)), result);
1928 else if (!image_is_dynamic (image))
1929 g_hash_table_insert (image->methodref_cache, GINT_TO_POINTER (token), result);
1932 mono_image_unlock (image);
1938 get_method_constrained (MonoImage *image, MonoMethod *method, MonoClass *constrained_class, MonoGenericContext *context)
1941 MonoClass *ic = NULL;
1942 MonoGenericContext *method_context = NULL;
1943 MonoMethodSignature *sig, *original_sig;
1945 mono_class_init (constrained_class);
1946 original_sig = sig = mono_method_signature (method);
1951 if (method->is_inflated && sig->generic_param_count) {
1952 MonoMethodInflated *imethod = (MonoMethodInflated *) method;
1953 sig = mono_method_signature (imethod->declaring); /*We assume that if the inflated method signature is valid, the declaring method is too*/
1954 method_context = mono_method_get_context (method);
1958 * We must inflate the signature with the class instantiation to work on
1959 * cases where a class inherit from a generic type and the override replaces
1960 * any type argument which a concrete type. See #325283.
1962 if (method_context->class_inst) {
1964 MonoGenericContext ctx;
1965 ctx.method_inst = NULL;
1966 ctx.class_inst = method_context->class_inst;
1967 /*Fixme, property propagate this error*/
1968 sig = inflate_generic_signature_checked (method->klass->image, sig, &ctx, &error);
1969 if (!mono_error_ok (&error)) {
1970 mono_error_cleanup (&error);
1976 if ((constrained_class != method->klass) && (MONO_CLASS_IS_INTERFACE (method->klass)))
1979 result = find_method (constrained_class, ic, method->name, sig, constrained_class);
1980 if (sig != original_sig)
1981 mono_metadata_free_inflated_signature (sig);
1984 char *m = mono_method_full_name (method, 1);
1985 g_warning ("Missing method %s.%s.%s in assembly %s method %s", method->klass->name_space,
1986 method->klass->name, method->name, image->name, m);
1992 result = mono_class_inflate_generic_method (result, method_context);
1998 mono_get_method_constrained_with_method (MonoImage *image, MonoMethod *method, MonoClass *constrained_class,
1999 MonoGenericContext *context)
2003 return get_method_constrained (image, method, constrained_class, context);
2007 * mono_get_method_constrained:
2009 * This is used when JITing the `constrained.' opcode.
2011 * This returns two values: the contrained method, which has been inflated
2012 * as the function return value; And the original CIL-stream method as
2013 * declared in cil_method. The later is used for verification.
2016 mono_get_method_constrained (MonoImage *image, guint32 token, MonoClass *constrained_class,
2017 MonoGenericContext *context, MonoMethod **cil_method)
2021 *cil_method = mono_get_method_from_token (image, token, NULL, context, NULL);
2025 result = get_method_constrained (image, *cil_method, constrained_class, context);
2031 mono_free_method (MonoMethod *method)
2033 if (mono_profiler_get_events () & MONO_PROFILE_METHOD_EVENTS)
2034 mono_profiler_method_free (method);
2036 /* FIXME: This hack will go away when the profiler will support freeing methods */
2037 if (mono_profiler_get_events () != MONO_PROFILE_NONE)
2040 if (method->signature) {
2042 * FIXME: This causes crashes because the types inside signatures and
2043 * locals are shared.
2045 /* mono_metadata_free_method_signature (method->signature); */
2046 /* g_free (method->signature); */
2049 if (method_is_dynamic (method)) {
2050 MonoMethodWrapper *mw = (MonoMethodWrapper*)method;
2053 mono_marshal_free_dynamic_wrappers (method);
2055 mono_image_property_remove (method->klass->image, method);
2057 g_free ((char*)method->name);
2059 g_free ((char*)mw->header->code);
2060 for (i = 0; i < mw->header->num_locals; ++i)
2061 g_free (mw->header->locals [i]);
2062 g_free (mw->header->clauses);
2063 g_free (mw->header);
2065 g_free (mw->method_data);
2066 g_free (method->signature);
2072 mono_method_get_param_names (MonoMethod *method, const char **names)
2076 MonoTableInfo *methodt;
2077 MonoTableInfo *paramt;
2078 MonoMethodSignature *signature;
2081 if (method->is_inflated)
2082 method = ((MonoMethodInflated *) method)->declaring;
2084 signature = mono_method_signature (method);
2085 /*FIXME this check is somewhat redundant since the caller usally will have to get the signature to figure out the
2086 number of arguments and allocate a properly sized array. */
2087 if (signature == NULL)
2090 if (!signature->param_count)
2093 for (i = 0; i < signature->param_count; ++i)
2096 klass = method->klass;
2100 mono_class_init (klass);
2102 if (image_is_dynamic (klass->image)) {
2103 MonoReflectionMethodAux *method_aux =
2104 g_hash_table_lookup (
2105 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
2106 if (method_aux && method_aux->param_names) {
2107 for (i = 0; i < mono_method_signature (method)->param_count; ++i)
2108 if (method_aux->param_names [i + 1])
2109 names [i] = method_aux->param_names [i + 1];
2114 if (method->wrapper_type) {
2115 char **pnames = NULL;
2117 mono_image_lock (klass->image);
2118 if (klass->image->wrapper_param_names)
2119 pnames = g_hash_table_lookup (klass->image->wrapper_param_names, method);
2120 mono_image_unlock (klass->image);
2123 for (i = 0; i < signature->param_count; ++i)
2124 names [i] = pnames [i];
2129 methodt = &klass->image->tables [MONO_TABLE_METHOD];
2130 paramt = &klass->image->tables [MONO_TABLE_PARAM];
2131 idx = mono_method_get_index (method);
2133 guint32 cols [MONO_PARAM_SIZE];
2136 param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
2138 if (idx < methodt->rows)
2139 lastp = mono_metadata_decode_row_col (methodt, idx, MONO_METHOD_PARAMLIST);
2141 lastp = paramt->rows + 1;
2142 for (i = param_index; i < lastp; ++i) {
2143 mono_metadata_decode_row (paramt, i -1, cols, MONO_PARAM_SIZE);
2144 if (cols [MONO_PARAM_SEQUENCE] && cols [MONO_PARAM_SEQUENCE] <= signature->param_count) /* skip return param spec and bounds check*/
2145 names [cols [MONO_PARAM_SEQUENCE] - 1] = mono_metadata_string_heap (klass->image, cols [MONO_PARAM_NAME]);
2151 mono_method_get_param_token (MonoMethod *method, int index)
2153 MonoClass *klass = method->klass;
2154 MonoTableInfo *methodt;
2157 mono_class_init (klass);
2159 if (image_is_dynamic (klass->image))
2160 g_assert_not_reached ();
2162 methodt = &klass->image->tables [MONO_TABLE_METHOD];
2163 idx = mono_method_get_index (method);
2165 guint param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
2169 return mono_metadata_make_token (MONO_TABLE_PARAM, 0);
2171 return mono_metadata_make_token (MONO_TABLE_PARAM, param_index + index);
2178 mono_method_get_marshal_info (MonoMethod *method, MonoMarshalSpec **mspecs)
2181 MonoClass *klass = method->klass;
2182 MonoTableInfo *methodt;
2183 MonoTableInfo *paramt;
2184 MonoMethodSignature *signature;
2187 signature = mono_method_signature (method);
2188 g_assert (signature); /*FIXME there is no way to signal error from this function*/
2190 for (i = 0; i < signature->param_count + 1; ++i)
2193 if (image_is_dynamic (method->klass->image)) {
2194 MonoReflectionMethodAux *method_aux =
2195 g_hash_table_lookup (
2196 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
2197 if (method_aux && method_aux->param_marshall) {
2198 MonoMarshalSpec **dyn_specs = method_aux->param_marshall;
2199 for (i = 0; i < signature->param_count + 1; ++i)
2200 if (dyn_specs [i]) {
2201 mspecs [i] = g_new0 (MonoMarshalSpec, 1);
2202 memcpy (mspecs [i], dyn_specs [i], sizeof (MonoMarshalSpec));
2203 mspecs [i]->data.custom_data.custom_name = g_strdup (dyn_specs [i]->data.custom_data.custom_name);
2204 mspecs [i]->data.custom_data.cookie = g_strdup (dyn_specs [i]->data.custom_data.cookie);
2210 mono_class_init (klass);
2212 methodt = &klass->image->tables [MONO_TABLE_METHOD];
2213 paramt = &klass->image->tables [MONO_TABLE_PARAM];
2214 idx = mono_method_get_index (method);
2216 guint32 cols [MONO_PARAM_SIZE];
2217 guint param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
2219 if (idx < methodt->rows)
2220 lastp = mono_metadata_decode_row_col (methodt, idx, MONO_METHOD_PARAMLIST);
2222 lastp = paramt->rows + 1;
2224 for (i = param_index; i < lastp; ++i) {
2225 mono_metadata_decode_row (paramt, i -1, cols, MONO_PARAM_SIZE);
2227 if (cols [MONO_PARAM_FLAGS] & PARAM_ATTRIBUTE_HAS_FIELD_MARSHAL && cols [MONO_PARAM_SEQUENCE] <= signature->param_count) {
2229 tp = mono_metadata_get_marshal_info (klass->image, i - 1, FALSE);
2231 mspecs [cols [MONO_PARAM_SEQUENCE]]= mono_metadata_parse_marshal_spec (klass->image, tp);
2240 mono_method_has_marshal_info (MonoMethod *method)
2243 MonoClass *klass = method->klass;
2244 MonoTableInfo *methodt;
2245 MonoTableInfo *paramt;
2248 if (image_is_dynamic (method->klass->image)) {
2249 MonoReflectionMethodAux *method_aux =
2250 g_hash_table_lookup (
2251 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
2252 MonoMarshalSpec **dyn_specs = method_aux->param_marshall;
2254 for (i = 0; i < mono_method_signature (method)->param_count + 1; ++i)
2261 mono_class_init (klass);
2263 methodt = &klass->image->tables [MONO_TABLE_METHOD];
2264 paramt = &klass->image->tables [MONO_TABLE_PARAM];
2265 idx = mono_method_get_index (method);
2267 guint32 cols [MONO_PARAM_SIZE];
2268 guint param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
2270 if (idx + 1 < methodt->rows)
2271 lastp = mono_metadata_decode_row_col (methodt, idx, MONO_METHOD_PARAMLIST);
2273 lastp = paramt->rows + 1;
2275 for (i = param_index; i < lastp; ++i) {
2276 mono_metadata_decode_row (paramt, i -1, cols, MONO_PARAM_SIZE);
2278 if (cols [MONO_PARAM_FLAGS] & PARAM_ATTRIBUTE_HAS_FIELD_MARSHAL)
2287 mono_method_get_wrapper_data (MonoMethod *method, guint32 id)
2290 g_assert (method != NULL);
2291 g_assert (method->wrapper_type != MONO_WRAPPER_NONE);
2293 if (method->is_inflated)
2294 method = ((MonoMethodInflated *) method)->declaring;
2295 data = ((MonoMethodWrapper *)method)->method_data;
2296 g_assert (data != NULL);
2297 g_assert (id <= GPOINTER_TO_UINT (*data));
2304 } StackWalkUserData;
2307 stack_walk_adapter (MonoStackFrameInfo *frame, MonoContext *ctx, gpointer data)
2309 StackWalkUserData *d = data;
2311 switch (frame->type) {
2312 case FRAME_TYPE_DEBUGGER_INVOKE:
2313 case FRAME_TYPE_MANAGED_TO_NATIVE:
2315 case FRAME_TYPE_MANAGED:
2316 g_assert (frame->ji);
2317 return d->func (mono_jit_info_get_method (frame->ji), frame->native_offset, frame->il_offset, frame->managed, d->user_data);
2320 g_assert_not_reached ();
2326 mono_stack_walk (MonoStackWalk func, gpointer user_data)
2328 StackWalkUserData ud = { func, user_data };
2329 mono_get_eh_callbacks ()->mono_walk_stack_with_ctx (stack_walk_adapter, NULL, MONO_UNWIND_LOOKUP_ALL, &ud);
2333 mono_stack_walk_no_il (MonoStackWalk func, gpointer user_data)
2335 StackWalkUserData ud = { func, user_data };
2336 mono_get_eh_callbacks ()->mono_walk_stack_with_ctx (stack_walk_adapter, NULL, MONO_UNWIND_DEFAULT, &ud);
2340 MonoStackWalkAsyncSafe func;
2342 } AsyncStackWalkUserData;
2346 async_stack_walk_adapter (MonoStackFrameInfo *frame, MonoContext *ctx, gpointer data)
2348 AsyncStackWalkUserData *d = data;
2350 switch (frame->type) {
2351 case FRAME_TYPE_DEBUGGER_INVOKE:
2352 case FRAME_TYPE_MANAGED_TO_NATIVE:
2354 case FRAME_TYPE_MANAGED:
2357 if (frame->ji->async)
2358 return d->func (NULL, frame->domain, frame->ji->code_start, frame->native_offset, d->user_data);
2360 return d->func (mono_jit_info_get_method (frame->ji), frame->domain, frame->ji->code_start, frame->native_offset, d->user_data);
2363 g_assert_not_reached ();
2370 * mono_stack_walk_async_safe:
2372 * Async safe version callable from signal handlers.
2375 mono_stack_walk_async_safe (MonoStackWalkAsyncSafe func, void *initial_sig_context, void *user_data)
2378 AsyncStackWalkUserData ud = { func, user_data };
2380 mono_sigctx_to_monoctx (initial_sig_context, &ctx);
2381 mono_get_eh_callbacks ()->mono_walk_stack_with_ctx (async_stack_walk_adapter, NULL, MONO_UNWIND_SIGNAL_SAFE, &ud);
2385 last_managed (MonoMethod *m, gint no, gint ilo, gboolean managed, gpointer data)
2387 MonoMethod **dest = data;
2389 /*g_print ("In %s::%s [%d] [%d]\n", m->klass->name, m->name, no, ilo);*/
2395 mono_method_get_last_managed (void)
2397 MonoMethod *m = NULL;
2398 mono_stack_walk_no_il (last_managed, &m);
2402 static gboolean loader_lock_track_ownership = FALSE;
2407 * See docs/thread-safety.txt for the locking strategy.
2410 mono_loader_lock (void)
2412 mono_locks_acquire (&loader_mutex, LoaderLock);
2413 if (G_UNLIKELY (loader_lock_track_ownership)) {
2414 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));
2419 mono_loader_unlock (void)
2421 mono_locks_release (&loader_mutex, LoaderLock);
2422 if (G_UNLIKELY (loader_lock_track_ownership)) {
2423 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));
2428 * mono_loader_lock_track_ownership:
2430 * Set whenever the runtime should track ownership of the loader lock. If set to TRUE,
2431 * the mono_loader_lock_is_owned_by_self () can be called to query whenever the current
2432 * thread owns the loader lock.
2435 mono_loader_lock_track_ownership (gboolean track)
2437 loader_lock_track_ownership = track;
2441 * mono_loader_lock_is_owned_by_self:
2443 * Return whenever the current thread owns the loader lock.
2444 * This is useful to avoid blocking operations while holding the loader lock.
2447 mono_loader_lock_is_owned_by_self (void)
2449 g_assert (loader_lock_track_ownership);
2451 return GPOINTER_TO_UINT (mono_native_tls_get_value (loader_lock_nest_id)) > 0;
2455 * mono_loader_lock_if_inited:
2457 * Acquire the loader lock if it has been initialized, no-op otherwise. This can
2458 * be used in runtime initialization code which can be executed before mono_loader_init ().
2461 mono_loader_lock_if_inited (void)
2463 if (loader_lock_inited)
2464 mono_loader_lock ();
2468 mono_loader_unlock_if_inited (void)
2470 if (loader_lock_inited)
2471 mono_loader_unlock ();
2475 * mono_method_signature:
2477 * Return the signature of the method M. On failure, returns NULL, and ERR is set.
2479 MonoMethodSignature*
2480 mono_method_signature_checked (MonoMethod *m, MonoError *error)
2486 gboolean can_cache_signature;
2487 MonoGenericContainer *container;
2488 MonoMethodSignature *signature = NULL, *sig2;
2491 /* We need memory barriers below because of the double-checked locking pattern */
2493 mono_error_init (error);
2496 return m->signature;
2498 img = m->klass->image;
2500 if (m->is_inflated) {
2501 MonoMethodInflated *imethod = (MonoMethodInflated *) m;
2502 /* the lock is recursive */
2503 signature = mono_method_signature (imethod->declaring);
2504 signature = inflate_generic_signature_checked (imethod->declaring->klass->image, signature, mono_method_get_context (m), error);
2505 if (!mono_error_ok (error))
2508 inflated_signatures_size += mono_metadata_signature_size (signature);
2510 mono_image_lock (img);
2512 mono_memory_barrier ();
2514 m->signature = signature;
2516 mono_image_unlock (img);
2518 return m->signature;
2521 g_assert (mono_metadata_token_table (m->token) == MONO_TABLE_METHOD);
2522 idx = mono_metadata_token_index (m->token);
2524 sig = mono_metadata_blob_heap (img, sig_offset = mono_metadata_decode_row_col (&img->tables [MONO_TABLE_METHOD], idx - 1, MONO_METHOD_SIGNATURE));
2526 g_assert (!m->klass->generic_class);
2527 container = mono_method_get_generic_container (m);
2529 container = m->klass->generic_container;
2531 /* Generic signatures depend on the container so they cannot be cached */
2532 /* icall/pinvoke signatures cannot be cached cause we modify them below */
2533 can_cache_signature = !(m->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && !(m->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) && !container;
2535 /* If the method has parameter attributes, that can modify the signature */
2536 if (mono_metadata_method_has_param_attrs (img, idx))
2537 can_cache_signature = FALSE;
2539 if (can_cache_signature) {
2540 mono_image_lock (img);
2541 signature = g_hash_table_lookup (img->method_signatures, sig);
2542 mono_image_unlock (img);
2546 const char *sig_body;
2547 /*TODO we should cache the failure result somewhere*/
2548 if (!mono_verifier_verify_method_signature (img, sig_offset, error))
2551 size = mono_metadata_decode_blob_size (sig, &sig_body);
2553 signature = mono_metadata_parse_method_signature_full (img, container, idx, sig_body, NULL);
2555 mono_error_set_from_loader_error (error);
2559 if (can_cache_signature) {
2560 mono_image_lock (img);
2561 sig2 = g_hash_table_lookup (img->method_signatures, sig);
2563 g_hash_table_insert (img->method_signatures, (gpointer)sig, signature);
2564 mono_image_unlock (img);
2567 signatures_size += mono_metadata_signature_size (signature);
2570 /* Verify metadata consistency */
2571 if (signature->generic_param_count) {
2572 if (!container || !container->is_method) {
2573 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);
2576 if (container->type_argc != signature->generic_param_count) {
2577 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);
2580 } else if (container && container->is_method && container->type_argc) {
2581 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);
2584 if (m->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL)
2585 signature->pinvoke = 1;
2586 else if (m->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) {
2587 MonoCallConvention conv = 0;
2588 MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *)m;
2589 signature->pinvoke = 1;
2591 switch (piinfo->piflags & PINVOKE_ATTRIBUTE_CALL_CONV_MASK) {
2592 case 0: /* no call conv, so using default */
2593 case PINVOKE_ATTRIBUTE_CALL_CONV_WINAPI:
2594 conv = MONO_CALL_DEFAULT;
2596 case PINVOKE_ATTRIBUTE_CALL_CONV_CDECL:
2599 case PINVOKE_ATTRIBUTE_CALL_CONV_STDCALL:
2600 conv = MONO_CALL_STDCALL;
2602 case PINVOKE_ATTRIBUTE_CALL_CONV_THISCALL:
2603 conv = MONO_CALL_THISCALL;
2605 case PINVOKE_ATTRIBUTE_CALL_CONV_FASTCALL:
2606 conv = MONO_CALL_FASTCALL;
2608 case PINVOKE_ATTRIBUTE_CALL_CONV_GENERIC:
2609 case PINVOKE_ATTRIBUTE_CALL_CONV_GENERICINST:
2611 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);
2614 signature->call_convention = conv;
2617 mono_image_lock (img);
2619 mono_memory_barrier ();
2621 m->signature = signature;
2623 mono_image_unlock (img);
2625 return m->signature;
2629 * mono_method_signature:
2631 * Return the signature of the method M. On failure, returns NULL.
2633 MonoMethodSignature*
2634 mono_method_signature (MonoMethod *m)
2637 MonoMethodSignature *sig;
2639 sig = mono_method_signature_checked (m, &error);
2641 char *type_name = mono_type_get_full_name (m->klass);
2642 g_warning ("Could not load signature of %s:%s due to: %s", type_name, m->name, mono_error_get_message (&error));
2644 mono_error_cleanup (&error);
2651 mono_method_get_name (MonoMethod *method)
2653 return method->name;
2657 mono_method_get_class (MonoMethod *method)
2659 return method->klass;
2663 mono_method_get_token (MonoMethod *method)
2665 return method->token;
2669 mono_method_get_header (MonoMethod *method)
2675 MonoMethodHeader *header;
2676 MonoGenericContainer *container;
2678 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))
2681 img = method->klass->image;
2683 if (method->is_inflated) {
2684 MonoMethodInflated *imethod = (MonoMethodInflated *) method;
2685 MonoMethodHeader *header, *iheader;
2687 header = mono_method_get_header (imethod->declaring);
2691 iheader = inflate_generic_header (header, mono_method_get_context (method));
2692 mono_metadata_free_mh (header);
2694 mono_image_lock (img);
2696 if (imethod->header) {
2697 mono_metadata_free_mh (iheader);
2698 mono_image_unlock (img);
2699 return imethod->header;
2702 mono_memory_barrier ();
2703 imethod->header = iheader;
2705 mono_image_unlock (img);
2707 return imethod->header;
2710 if (method->wrapper_type != MONO_WRAPPER_NONE || method->sre_method) {
2711 MonoMethodWrapper *mw = (MonoMethodWrapper *)method;
2712 g_assert (mw->header);
2717 * We don't need locks here: the new header is allocated from malloc memory
2718 * and is not stored anywhere in the runtime, the user needs to free it.
2720 g_assert (mono_metadata_token_table (method->token) == MONO_TABLE_METHOD);
2721 idx = mono_metadata_token_index (method->token);
2722 rva = mono_metadata_decode_row_col (&img->tables [MONO_TABLE_METHOD], idx - 1, MONO_METHOD_RVA);
2724 if (!mono_verifier_verify_method_header (img, rva, NULL))
2727 loc = mono_image_rva_map (img, rva);
2732 * When parsing the types of local variables, we must pass any container available
2733 * to ensure that both VAR and MVAR will get the right owner.
2735 container = mono_method_get_generic_container (method);
2737 container = method->klass->generic_container;
2738 header = mono_metadata_parse_mh_full (img, container, loc);
2744 mono_method_get_flags (MonoMethod *method, guint32 *iflags)
2747 *iflags = method->iflags;
2748 return method->flags;
2752 * Find the method index in the metadata methodDef table.
2755 mono_method_get_index (MonoMethod *method)
2757 MonoClass *klass = method->klass;
2761 /* constructed array methods are not in the MethodDef table */
2765 return mono_metadata_token_index (method->token);
2767 mono_class_setup_methods (klass);
2768 if (klass->exception_type)
2770 for (i = 0; i < klass->method.count; ++i) {
2771 if (method == klass->methods [i]) {
2772 if (klass->image->uncompressed_metadata)
2773 return mono_metadata_translate_token_index (klass->image, MONO_TABLE_METHOD, klass->method.first + i + 1);
2775 return klass->method.first + i + 1;