2 * loader.c: Image Loader
5 * Paolo Molaro (lupus@ximian.com)
6 * Miguel de Icaza (miguel@ximian.com)
7 * Patrik Torstensson (patrik.torstensson@labs2.com)
9 * Copyright 2001-2003 Ximian, Inc (http://www.ximian.com)
10 * Copyright 2004-2009 Novell, Inc (http://www.novell.com)
12 * This file is used by the interpreter and the JIT engine to locate
13 * assemblies. Used to load AssemblyRef and later to resolve various
17 * This should keep track of the assembly versions that we are loading.
25 #include <mono/metadata/metadata.h>
26 #include <mono/metadata/image.h>
27 #include <mono/metadata/assembly.h>
28 #include <mono/metadata/tokentype.h>
29 #include <mono/metadata/tabledefs.h>
30 #include <mono/metadata/metadata-internals.h>
31 #include <mono/metadata/loader.h>
32 #include <mono/metadata/class-internals.h>
33 #include <mono/metadata/debug-helpers.h>
34 #include <mono/metadata/reflection.h>
35 #include <mono/metadata/profiler.h>
36 #include <mono/metadata/profiler-private.h>
37 #include <mono/metadata/exception.h>
38 #include <mono/metadata/marshal.h>
39 #include <mono/metadata/lock-tracer.h>
40 #include <mono/metadata/verify-internals.h>
41 #include <mono/utils/mono-logger.h>
42 #include <mono/utils/mono-dl.h>
43 #include <mono/utils/mono-membar.h>
44 #include <mono/utils/mono-counters.h>
46 MonoDefaults mono_defaults;
49 * This lock protects the hash tables inside MonoImage used by the metadata
50 * loading functions in class.c and loader.c.
52 * See domain-internals.h for locking policy in combination with the
55 static CRITICAL_SECTION loader_mutex;
58 static guint32 inflated_signatures_size;
59 static guint32 memberref_sig_cache_size;
62 * This TLS variable contains the last type load error encountered by the loader.
64 guint32 loader_error_thread_id;
67 * This TLS variable holds how many times the current thread has acquired the loader
70 guint32 loader_lock_nest_id;
75 static gboolean inited;
78 InitializeCriticalSection (&loader_mutex);
80 loader_error_thread_id = TlsAlloc ();
81 loader_lock_nest_id = TlsAlloc ();
83 mono_counters_register ("Inflated signatures size",
84 MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &inflated_signatures_size);
85 mono_counters_register ("Memberref signature cache size",
86 MONO_COUNTER_METADATA | MONO_COUNTER_INT, &memberref_sig_cache_size);
93 mono_loader_cleanup (void)
95 TlsFree (loader_error_thread_id);
96 TlsFree (loader_lock_nest_id);
98 /*DeleteCriticalSection (&loader_mutex);*/
102 * Handling of type load errors should be done as follows:
104 * If something could not be loaded, the loader should call one of the
105 * mono_loader_set_error_XXX functions ()
106 * with the appropriate arguments, then return NULL to report the failure. The error
107 * should be propagated until it reaches code which can throw managed exceptions. At that
108 * point, an exception should be thrown based on the information returned by
109 * mono_loader_get_last_error (). Then the error should be cleared by calling
110 * mono_loader_clear_error ().
114 set_loader_error (MonoLoaderError *error)
116 TlsSetValue (loader_error_thread_id, error);
120 * mono_loader_set_error_assembly_load:
122 * Set the loader error for this thread.
125 mono_loader_set_error_assembly_load (const char *assembly_name, gboolean ref_only)
127 MonoLoaderError *error;
129 if (mono_loader_get_last_error ())
132 error = g_new0 (MonoLoaderError, 1);
133 error->exception_type = MONO_EXCEPTION_FILE_NOT_FOUND;
134 error->assembly_name = g_strdup (assembly_name);
135 error->ref_only = ref_only;
138 * This is not strictly needed, but some (most) of the loader code still
139 * can't deal with load errors, and this message is more helpful than an
143 g_warning ("Cannot resolve dependency to assembly '%s' because it has not been preloaded. When using the ReflectionOnly APIs, dependent assemblies must be pre-loaded or loaded on demand through the ReflectionOnlyAssemblyResolve event.", assembly_name);
145 g_warning ("Could not load file or assembly '%s' or one of its dependencies.", assembly_name);
147 set_loader_error (error);
151 * mono_loader_set_error_type_load:
153 * Set the loader error for this thread.
156 mono_loader_set_error_type_load (const char *class_name, const char *assembly_name)
158 MonoLoaderError *error;
160 if (mono_loader_get_last_error ())
163 error = g_new0 (MonoLoaderError, 1);
164 error->exception_type = MONO_EXCEPTION_TYPE_LOAD;
165 error->class_name = g_strdup (class_name);
166 error->assembly_name = g_strdup (assembly_name);
169 * This is not strictly needed, but some (most) of the loader code still
170 * can't deal with load errors, and this message is more helpful than an
173 g_warning ("The class %s could not be loaded, used in %s", class_name, assembly_name);
175 set_loader_error (error);
179 * mono_loader_set_error_method_load:
181 * Set the loader error for this thread. MEMBER_NAME should point to a string
185 mono_loader_set_error_method_load (const char *class_name, const char *member_name)
187 MonoLoaderError *error;
189 /* FIXME: Store the signature as well */
190 if (mono_loader_get_last_error ())
193 error = g_new0 (MonoLoaderError, 1);
194 error->exception_type = MONO_EXCEPTION_MISSING_METHOD;
195 error->class_name = g_strdup (class_name);
196 error->member_name = member_name;
198 set_loader_error (error);
202 * mono_loader_set_error_field_load:
204 * Set the loader error for this thread. MEMBER_NAME should point to a string
208 mono_loader_set_error_field_load (MonoClass *klass, const char *member_name)
210 MonoLoaderError *error;
212 /* FIXME: Store the signature as well */
213 if (mono_loader_get_last_error ())
216 error = g_new0 (MonoLoaderError, 1);
217 error->exception_type = MONO_EXCEPTION_MISSING_FIELD;
218 error->klass = klass;
219 error->member_name = member_name;
221 set_loader_error (error);
225 * mono_loader_set_error_bad_image:
227 * Set the loader error for this thread.
230 mono_loader_set_error_bad_image (char *msg)
232 MonoLoaderError *error;
234 if (mono_loader_get_last_error ())
237 error = g_new0 (MonoLoaderError, 1);
238 error->exception_type = MONO_EXCEPTION_BAD_IMAGE;
241 set_loader_error (error);
246 * mono_loader_get_last_error:
248 * Returns information about the last type load exception encountered by the loader, or
249 * NULL. After use, the exception should be cleared by calling mono_loader_clear_error.
252 mono_loader_get_last_error (void)
254 return (MonoLoaderError*)TlsGetValue (loader_error_thread_id);
258 * mono_loader_clear_error:
260 * Disposes any loader error messages on this thread
263 mono_loader_clear_error (void)
265 MonoLoaderError *ex = (MonoLoaderError*)TlsGetValue (loader_error_thread_id);
268 g_free (ex->class_name);
269 g_free (ex->assembly_name);
273 TlsSetValue (loader_error_thread_id, NULL);
278 * mono_loader_error_prepare_exception:
279 * @error: The MonoLoaderError to turn into an exception
281 * This turns a MonoLoaderError into an exception that can be thrown
282 * and resets the Mono Loader Error state during this process.
286 mono_loader_error_prepare_exception (MonoLoaderError *error)
288 MonoException *ex = NULL;
290 switch (error->exception_type) {
291 case MONO_EXCEPTION_TYPE_LOAD: {
292 char *cname = g_strdup (error->class_name);
293 char *aname = g_strdup (error->assembly_name);
294 MonoString *class_name;
296 mono_loader_clear_error ();
298 class_name = mono_string_new (mono_domain_get (), cname);
300 ex = mono_get_exception_type_load (class_name, aname);
305 case MONO_EXCEPTION_MISSING_METHOD: {
306 char *cname = g_strdup (error->class_name);
307 char *aname = g_strdup (error->member_name);
309 mono_loader_clear_error ();
310 ex = mono_get_exception_missing_method (cname, aname);
316 case MONO_EXCEPTION_MISSING_FIELD: {
317 char *cnspace = g_strdup ((error->klass && *error->klass->name_space) ? error->klass->name_space : "");
318 char *cname = g_strdup (error->klass ? error->klass->name : "");
319 char *cmembername = g_strdup (error->member_name);
322 mono_loader_clear_error ();
323 class_name = g_strdup_printf ("%s%s%s", cnspace, cnspace ? "." : "", cname);
325 ex = mono_get_exception_missing_field (class_name, cmembername);
328 g_free (cmembername);
333 case MONO_EXCEPTION_FILE_NOT_FOUND: {
338 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);
340 msg = g_strdup_printf ("Could not load file or assembly '%s' or one of its dependencies.", error->assembly_name);
341 filename = g_strdup (error->assembly_name);
342 /* Has to call this before calling anything which might call mono_class_init () */
343 mono_loader_clear_error ();
344 ex = mono_get_exception_file_not_found2 (msg, mono_string_new (mono_domain_get (), filename));
350 case MONO_EXCEPTION_BAD_IMAGE: {
351 char *msg = g_strdup (error->msg);
352 mono_loader_clear_error ();
353 ex = mono_get_exception_bad_image_format (msg);
359 g_assert_not_reached ();
366 * find_cached_memberref_sig:
368 * Return a cached copy of the memberref signature identified by SIG_IDX.
369 * We use a gpointer since the cache stores both MonoTypes and MonoMethodSignatures.
370 * A cache is needed since the type/signature parsing routines allocate everything
371 * from a mempool, so without a cache, multiple requests for the same signature would
372 * lead to unbounded memory growth. For normal methods/fields this is not a problem
373 * since the resulting methods/fields are cached, but inflated methods/fields cannot
375 * LOCKING: Acquires the loader lock.
378 find_cached_memberref_sig (MonoImage *image, guint32 sig_idx)
383 res = g_hash_table_lookup (image->memberref_signatures, GUINT_TO_POINTER (sig_idx));
384 mono_loader_unlock ();
390 cache_memberref_sig (MonoImage *image, guint32 sig_idx, gpointer sig)
395 prev_sig = g_hash_table_lookup (image->memberref_signatures, GUINT_TO_POINTER (sig_idx));
397 /* Somebody got in before us */
401 g_hash_table_insert (image->memberref_signatures, GUINT_TO_POINTER (sig_idx), sig);
402 /* An approximation based on glib 2.18 */
403 memberref_sig_cache_size += sizeof (gpointer) * 4;
406 mono_loader_unlock ();
411 static MonoClassField*
412 field_from_memberref (MonoImage *image, guint32 token, MonoClass **retklass,
413 MonoGenericContext *context)
416 MonoClassField *field;
417 MonoTableInfo *tables = image->tables;
420 guint32 nindex, class, class_table;
423 guint32 idx = mono_metadata_token_index (token);
425 mono_metadata_decode_row (&tables [MONO_TABLE_MEMBERREF], idx-1, cols, MONO_MEMBERREF_SIZE);
426 nindex = cols [MONO_MEMBERREF_CLASS] >> MONO_MEMBERREF_PARENT_BITS;
427 class = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
429 fname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
431 if (!mono_verifier_verify_memberref_signature (image, cols [MONO_MEMBERREF_SIGNATURE], NULL)) {
432 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));
437 case MONO_MEMBERREF_PARENT_TYPEDEF:
438 class_table = MONO_TOKEN_TYPE_DEF;
439 klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF | nindex);
441 case MONO_MEMBERREF_PARENT_TYPEREF:
442 class_table = MONO_TOKEN_TYPE_REF;
443 klass = mono_class_from_typeref (image, MONO_TOKEN_TYPE_REF | nindex);
445 case MONO_MEMBERREF_PARENT_TYPESPEC:
446 class_table = MONO_TOKEN_TYPE_SPEC;
447 klass = mono_class_get_full (image, MONO_TOKEN_TYPE_SPEC | nindex, context);
450 /*FIXME this must set a loader error!*/
451 g_warning ("field load from %x", class);
456 char *name = mono_class_name_from_token (image, class_table | nindex);
457 g_warning ("Missing field %s in class %s (type token %d)", fname, name, class_table | nindex);
458 mono_loader_set_error_type_load (name, image->assembly_name);
463 ptr = mono_metadata_blob_heap (image, cols [MONO_MEMBERREF_SIGNATURE]);
464 mono_metadata_decode_blob_size (ptr, &ptr);
465 /* we may want to check the signature here... */
468 g_warning ("Bad field signature class token %08x field name %s token %08x", class, fname, token);
469 mono_loader_set_error_field_load (klass, fname);
472 /* FIXME: This needs a cache, especially for generic instances, since
473 * mono_metadata_parse_type () allocates everything from a mempool.
475 sig_type = find_cached_memberref_sig (image, cols [MONO_MEMBERREF_SIGNATURE]);
477 sig_type = mono_metadata_parse_type (image, MONO_PARSE_TYPE, 0, ptr, &ptr);
478 if (sig_type == NULL) {
479 mono_loader_set_error_field_load (klass, fname);
482 sig_type = cache_memberref_sig (image, cols [MONO_MEMBERREF_SIGNATURE], sig_type);
485 mono_class_init (klass); /*FIXME is this really necessary?*/
488 field = mono_class_get_field_from_name_full (klass, fname, sig_type);
491 mono_loader_set_error_field_load (klass, fname);
497 mono_field_from_token (MonoImage *image, guint32 token, MonoClass **retklass,
498 MonoGenericContext *context)
502 MonoClassField *field;
504 if (image->dynamic) {
505 MonoClassField *result;
506 MonoClass *handle_class;
509 result = mono_lookup_dynamic_token_class (image, token, TRUE, &handle_class, context);
510 // This checks the memberref type as well
511 if (!result || handle_class != mono_defaults.fieldhandle_class) {
512 mono_loader_set_error_bad_image (g_strdup_printf ("Bad field token 0x%08x on image %s.", token, image->name));
515 *retklass = result->parent;
520 if ((field = g_hash_table_lookup (image->field_cache, GUINT_TO_POINTER (token)))) {
521 *retklass = field->parent;
522 mono_loader_unlock ();
525 mono_loader_unlock ();
527 if (mono_metadata_token_table (token) == MONO_TABLE_MEMBERREF)
528 field = field_from_memberref (image, token, retklass, context);
530 type = mono_metadata_typedef_from_field (image, mono_metadata_token_index (token));
533 k = mono_class_get (image, MONO_TOKEN_TYPE_DEF | type);
539 field = mono_class_get_field (k, token);
543 if (field && field->parent && !field->parent->generic_class && !field->parent->generic_container)
544 g_hash_table_insert (image->field_cache, GUINT_TO_POINTER (token), field);
545 mono_loader_unlock ();
550 mono_metadata_signature_vararg_match (MonoMethodSignature *sig1, MonoMethodSignature *sig2)
554 if (sig1->hasthis != sig2->hasthis ||
555 sig1->sentinelpos != sig2->sentinelpos)
558 for (i = 0; i < sig1->sentinelpos; i++) {
559 MonoType *p1 = sig1->params[i];
560 MonoType *p2 = sig2->params[i];
562 /*if (p1->attrs != p2->attrs)
565 if (!mono_metadata_type_equal (p1, p2))
569 if (!mono_metadata_type_equal (sig1->ret, sig2->ret))
575 find_method_in_class (MonoClass *klass, const char *name, const char *qname, const char *fqname,
576 MonoMethodSignature *sig, MonoClass *from_class)
580 /* Search directly in the metadata to avoid calling setup_methods () */
582 /* FIXME: !from_class->generic_class condition causes test failures. */
583 if (klass->type_token && !klass->image->dynamic && !klass->methods && !klass->rank && klass == from_class && !from_class->generic_class) {
584 for (i = 0; i < klass->method.count; ++i) {
585 guint32 cols [MONO_METHOD_SIZE];
588 MonoMethodSignature *other_sig;
590 mono_metadata_decode_table_row (klass->image, MONO_TABLE_METHOD, klass->method.first + i, cols, MONO_METHOD_SIZE);
592 m_name = mono_metadata_string_heap (klass->image, cols [MONO_METHOD_NAME]);
594 if (!((fqname && !strcmp (m_name, fqname)) ||
595 (qname && !strcmp (m_name, qname)) ||
596 (name && !strcmp (m_name, name))))
599 method = mono_get_method (klass->image, MONO_TOKEN_METHOD_DEF | (klass->method.first + i + 1), klass);
600 other_sig = mono_method_signature (method);
601 if (method && other_sig && (sig->call_convention != MONO_CALL_VARARG) && mono_metadata_signature_equal (sig, other_sig))
606 mono_class_setup_methods (klass);
607 for (i = 0; i < klass->method.count; ++i) {
608 MonoMethod *m = klass->methods [i];
609 MonoMethodSignature *msig;
611 if (!((fqname && !strcmp (m->name, fqname)) ||
612 (qname && !strcmp (m->name, qname)) ||
613 (name && !strcmp (m->name, name))))
615 msig = mono_method_signature (m);
619 if (sig->call_convention == MONO_CALL_VARARG) {
620 if (mono_metadata_signature_vararg_match (sig, msig))
623 if (mono_metadata_signature_equal (sig, msig))
628 if (i < klass->method.count)
629 return mono_class_get_method_by_index (from_class, i);
634 find_method (MonoClass *in_class, MonoClass *ic, const char* name, MonoMethodSignature *sig, MonoClass *from_class)
637 char *qname, *fqname, *class_name;
638 gboolean is_interface;
639 MonoMethod *result = NULL;
641 is_interface = MONO_CLASS_IS_INTERFACE (in_class);
644 class_name = mono_type_get_name_full (&ic->byval_arg, MONO_TYPE_NAME_FORMAT_IL);
646 qname = g_strconcat (class_name, ".", name, NULL);
647 if (ic->name_space && ic->name_space [0])
648 fqname = g_strconcat (ic->name_space, ".", class_name, ".", name, NULL);
652 class_name = qname = fqname = NULL;
655 g_assert (from_class);
656 result = find_method_in_class (in_class, name, qname, fqname, sig, from_class);
660 if (name [0] == '.' && (!strcmp (name, ".ctor") || !strcmp (name, ".cctor")))
663 g_assert (from_class->interface_offsets_count == in_class->interface_offsets_count);
664 for (i = 0; i < in_class->interface_offsets_count; i++) {
665 MonoClass *in_ic = in_class->interfaces_packed [i];
666 MonoClass *from_ic = from_class->interfaces_packed [i];
667 char *ic_qname, *ic_fqname, *ic_class_name;
669 ic_class_name = mono_type_get_name_full (&in_ic->byval_arg, MONO_TYPE_NAME_FORMAT_IL);
670 ic_qname = g_strconcat (ic_class_name, ".", name, NULL);
671 if (in_ic->name_space && in_ic->name_space [0])
672 ic_fqname = g_strconcat (in_ic->name_space, ".", ic_class_name, ".", name, NULL);
676 result = find_method_in_class (in_ic, ic ? name : NULL, ic_qname, ic_fqname, sig, from_ic);
677 g_free (ic_class_name);
684 in_class = in_class->parent;
685 from_class = from_class->parent;
687 g_assert (!in_class == !from_class);
690 result = find_method_in_class (mono_defaults.object_class, name, qname, fqname, sig, mono_defaults.object_class);
699 static MonoMethodSignature*
700 inflate_generic_signature (MonoImage *image, MonoMethodSignature *sig, MonoGenericContext *context)
702 MonoMethodSignature *res;
709 res = g_malloc0 (MONO_SIZEOF_METHOD_SIGNATURE + ((gint32)sig->param_count) * sizeof (MonoType*));
710 res->param_count = sig->param_count;
711 res->sentinelpos = -1;
712 res->ret = mono_class_inflate_generic_type (sig->ret, context);
713 is_open = mono_class_is_open_constructed_type (res->ret);
714 for (i = 0; i < sig->param_count; ++i) {
715 res->params [i] = mono_class_inflate_generic_type (sig->params [i], context);
717 is_open = mono_class_is_open_constructed_type (res->params [i]);
719 res->hasthis = sig->hasthis;
720 res->explicit_this = sig->explicit_this;
721 res->call_convention = sig->call_convention;
722 res->pinvoke = sig->pinvoke;
723 res->generic_param_count = sig->generic_param_count;
724 res->sentinelpos = sig->sentinelpos;
725 res->has_type_parameters = is_open;
726 res->is_inflated = 1;
730 static MonoMethodHeader*
731 inflate_generic_header (MonoMethodHeader *header, MonoGenericContext *context)
733 MonoMethodHeader *res;
735 res = g_malloc0 (MONO_SIZEOF_METHOD_HEADER + sizeof (gpointer) * header->num_locals);
736 res->code = header->code;
737 res->code_size = header->code_size;
738 res->max_stack = header->max_stack;
739 res->num_clauses = header->num_clauses;
740 res->init_locals = header->init_locals;
741 res->num_locals = header->num_locals;
742 res->clauses = header->clauses;
743 for (i = 0; i < header->num_locals; ++i)
744 res->locals [i] = mono_class_inflate_generic_type (header->locals [i], context);
745 if (res->num_clauses) {
746 res->clauses = g_memdup (header->clauses, sizeof (MonoExceptionClause) * res->num_clauses);
747 for (i = 0; i < header->num_clauses; ++i) {
748 MonoExceptionClause *clause = &res->clauses [i];
749 if (clause->flags != MONO_EXCEPTION_CLAUSE_NONE)
751 clause->data.catch_class = mono_class_inflate_generic_class (clause->data.catch_class, context);
758 * token is the method_ref/def/spec token used in a call IL instruction.
761 mono_method_get_signature_full (MonoMethod *method, MonoImage *image, guint32 token, MonoGenericContext *context)
763 int table = mono_metadata_token_table (token);
764 int idx = mono_metadata_token_index (token);
766 guint32 cols [MONO_MEMBERREF_SIZE];
767 MonoMethodSignature *sig;
770 /* !table is for wrappers: we should really assign their own token to them */
771 if (!table || table == MONO_TABLE_METHOD)
772 return mono_method_signature (method);
774 if (table == MONO_TABLE_METHODSPEC) {
775 g_assert (!(method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) &&
776 mono_method_signature (method));
777 g_assert (method->is_inflated);
779 return mono_method_signature (method);
782 if (method->klass->generic_class)
783 return mono_method_signature (method);
786 /* FIXME: This might be incorrect for vararg methods */
787 return mono_method_signature (method);
789 mono_metadata_decode_row (&image->tables [MONO_TABLE_MEMBERREF], idx-1, cols, MONO_MEMBERREF_SIZE);
790 sig_idx = cols [MONO_MEMBERREF_SIGNATURE];
792 sig = find_cached_memberref_sig (image, sig_idx);
794 if (!mono_verifier_verify_memberref_signature (image, sig_idx, NULL)) {
795 guint32 class = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
796 const char *fname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
798 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));
802 ptr = mono_metadata_blob_heap (image, sig_idx);
803 mono_metadata_decode_blob_size (ptr, &ptr);
804 sig = mono_metadata_parse_method_signature (image, 0, ptr, NULL);
807 sig = cache_memberref_sig (image, sig_idx, sig);
811 MonoMethodSignature *cached;
813 /* This signature is not owned by a MonoMethod, so need to cache */
814 sig = inflate_generic_signature (image, sig, context);
815 cached = mono_metadata_get_inflated_signature (sig, context);
817 mono_metadata_free_inflated_signature (sig);
819 inflated_signatures_size += mono_metadata_signature_size (cached);
827 mono_method_get_signature (MonoMethod *method, MonoImage *image, guint32 token)
829 return mono_method_get_signature_full (method, image, token, NULL);
832 /* this is only for the typespec array methods */
834 mono_method_search_in_array_class (MonoClass *klass, const char *name, MonoMethodSignature *sig)
838 mono_class_setup_methods (klass);
840 for (i = 0; i < klass->method.count; ++i) {
841 MonoMethod *method = klass->methods [i];
842 if (strcmp (method->name, name) == 0 && sig->param_count == method->signature->param_count)
849 method_from_memberref (MonoImage *image, guint32 idx, MonoGenericContext *typespec_context,
850 gboolean *used_context)
852 MonoClass *klass = NULL;
853 MonoMethod *method = NULL;
854 MonoTableInfo *tables = image->tables;
856 guint32 nindex, class, sig_idx;
858 MonoMethodSignature *sig;
861 mono_metadata_decode_row (&tables [MONO_TABLE_MEMBERREF], idx-1, cols, 3);
862 nindex = cols [MONO_MEMBERREF_CLASS] >> MONO_MEMBERREF_PARENT_BITS;
863 class = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
864 /*g_print ("methodref: 0x%x 0x%x %s\n", class, nindex,
865 mono_metadata_string_heap (m, cols [MONO_MEMBERREF_NAME]));*/
867 mname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
870 * Whether we actually used the `typespec_context' or not.
871 * This is used to tell our caller whether or not it's safe to insert the returned
872 * method into a cache.
875 *used_context = class == MONO_MEMBERREF_PARENT_TYPESPEC;
878 case MONO_MEMBERREF_PARENT_TYPEREF:
879 klass = mono_class_from_typeref (image, MONO_TOKEN_TYPE_REF | nindex);
881 char *name = mono_class_name_from_token (image, MONO_TOKEN_TYPE_REF | nindex);
882 g_warning ("Missing method %s in assembly %s, type %s", mname, image->name, name);
883 mono_loader_set_error_type_load (name, image->assembly_name);
888 case MONO_MEMBERREF_PARENT_TYPESPEC:
890 * Parse the TYPESPEC in the parent's context.
892 klass = mono_class_get_full (image, MONO_TOKEN_TYPE_SPEC | nindex, typespec_context);
894 char *name = mono_class_name_from_token (image, MONO_TOKEN_TYPE_SPEC | nindex);
895 g_warning ("Missing method %s in assembly %s, type %s", mname, image->name, name);
896 mono_loader_set_error_type_load (name, image->assembly_name);
901 case MONO_MEMBERREF_PARENT_TYPEDEF:
902 klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF | nindex);
904 char *name = mono_class_name_from_token (image, MONO_TOKEN_TYPE_DEF | nindex);
905 g_warning ("Missing method %s in assembly %s, type %s", mname, image->name, name);
906 mono_loader_set_error_type_load (name, image->assembly_name);
911 case MONO_MEMBERREF_PARENT_METHODDEF:
912 return mono_get_method (image, MONO_TOKEN_METHOD_DEF | nindex, NULL);
916 /* This message leaks */
917 char *message = g_strdup_printf ("Memberref parent unknown: class: %d, index %d", class, nindex);
918 mono_loader_set_error_method_load ("", message);
924 mono_class_init (klass);
926 sig_idx = cols [MONO_MEMBERREF_SIGNATURE];
928 if (!mono_verifier_verify_memberref_signature (image, sig_idx, NULL)) {
929 mono_loader_set_error_method_load (klass->name, mname);
933 ptr = mono_metadata_blob_heap (image, sig_idx);
934 mono_metadata_decode_blob_size (ptr, &ptr);
936 sig = find_cached_memberref_sig (image, sig_idx);
938 sig = mono_metadata_parse_method_signature (image, 0, ptr, NULL);
942 sig = cache_memberref_sig (image, sig_idx, sig);
946 case MONO_MEMBERREF_PARENT_TYPEREF:
947 case MONO_MEMBERREF_PARENT_TYPEDEF:
948 method = find_method (klass, NULL, mname, sig, klass);
951 case MONO_MEMBERREF_PARENT_TYPESPEC: {
954 type = &klass->byval_arg;
956 if (type->type != MONO_TYPE_ARRAY && type->type != MONO_TYPE_SZARRAY) {
957 MonoClass *in_class = klass->generic_class ? klass->generic_class->container_class : klass;
958 method = find_method (in_class, NULL, mname, sig, klass);
962 /* we're an array and we created these methods already in klass in mono_class_init () */
963 method = mono_method_search_in_array_class (klass, mname, sig);
967 g_error ("Memberref parent unknown: class: %d, index %d", class, nindex);
968 g_assert_not_reached ();
972 char *msig = mono_signature_get_desc (sig, FALSE);
973 char * class_name = mono_type_get_name (&klass->byval_arg);
974 GString *s = g_string_new (mname);
975 if (sig->generic_param_count)
976 g_string_append_printf (s, "<[%d]>", sig->generic_param_count);
977 g_string_append_printf (s, "(%s)", msig);
979 msig = g_string_free (s, FALSE);
982 "Missing method %s::%s in assembly %s, referenced in assembly %s",
983 class_name, msig, klass->image->name, image->name);
984 mono_loader_set_error_method_load (class_name, mname);
993 method_from_methodspec (MonoImage *image, MonoGenericContext *context, guint32 idx)
998 MonoTableInfo *tables = image->tables;
999 MonoGenericContext new_context;
1000 MonoGenericInst *inst;
1002 guint32 cols [MONO_METHODSPEC_SIZE];
1003 guint32 token, nindex, param_count;
1005 mono_metadata_decode_row (&tables [MONO_TABLE_METHODSPEC], idx - 1, cols, MONO_METHODSPEC_SIZE);
1006 token = cols [MONO_METHODSPEC_METHOD];
1007 nindex = token >> MONO_METHODDEFORREF_BITS;
1009 if (!mono_verifier_verify_methodspec_signature (image, cols [MONO_METHODSPEC_SIGNATURE], NULL))
1012 ptr = mono_metadata_blob_heap (image, cols [MONO_METHODSPEC_SIGNATURE]);
1014 mono_metadata_decode_value (ptr, &ptr);
1016 param_count = mono_metadata_decode_value (ptr, &ptr);
1017 g_assert (param_count);
1019 inst = mono_metadata_parse_generic_inst (image, NULL, param_count, ptr, &ptr);
1020 if (context && inst->is_open) {
1021 inst = mono_metadata_inflate_generic_inst (inst, context, &error);
1022 if (!mono_error_ok (&error)) {
1023 mono_error_cleanup (&error); /*FIXME don't swallow error message.*/
1028 if ((token & MONO_METHODDEFORREF_MASK) == MONO_METHODDEFORREF_METHODDEF)
1029 method = mono_get_method_full (image, MONO_TOKEN_METHOD_DEF | nindex, NULL, context);
1031 method = method_from_memberref (image, nindex, context, NULL);
1036 klass = method->klass;
1038 if (klass->generic_class) {
1039 g_assert (method->is_inflated);
1040 method = ((MonoMethodInflated *) method)->declaring;
1043 new_context.class_inst = klass->generic_class ? klass->generic_class->context.class_inst : NULL;
1044 new_context.method_inst = inst;
1046 return mono_class_inflate_generic_method_full (method, klass, &new_context);
1049 struct _MonoDllMap {
1057 static MonoDllMap *global_dll_map;
1060 mono_dllmap_lookup_list (MonoDllMap *dll_map, const char *dll, const char* func, const char **rdll, const char **rfunc) {
1068 mono_loader_lock ();
1071 * we use the first entry we find that matches, since entries from
1072 * the config file are prepended to the list and we document that the
1073 * later entries win.
1075 for (; dll_map; dll_map = dll_map->next) {
1076 if (dll_map->dll [0] == 'i' && dll_map->dll [1] == ':') {
1077 if (g_ascii_strcasecmp (dll_map->dll + 2, dll))
1079 } else if (strcmp (dll_map->dll, dll)) {
1082 if (!found && dll_map->target) {
1083 *rdll = dll_map->target;
1085 /* we don't quit here, because we could find a full
1086 * entry that matches also function and that has priority.
1089 if (dll_map->func && strcmp (dll_map->func, func) == 0) {
1090 *rfunc = dll_map->target_func;
1095 mono_loader_unlock ();
1100 mono_dllmap_lookup (MonoImage *assembly, const char *dll, const char* func, const char **rdll, const char **rfunc)
1103 if (assembly && assembly->dll_map) {
1104 res = mono_dllmap_lookup_list (assembly->dll_map, dll, func, rdll, rfunc);
1108 return mono_dllmap_lookup_list (global_dll_map, dll, func, rdll, rfunc);
1112 * mono_dllmap_insert:
1114 * LOCKING: Acquires the loader lock.
1116 * NOTE: This can be called before the runtime is initialized, for example from
1117 * mono_config_parse ().
1120 mono_dllmap_insert (MonoImage *assembly, const char *dll, const char *func, const char *tdll, const char *tfunc)
1124 mono_loader_init ();
1126 mono_loader_lock ();
1129 entry = g_malloc0 (sizeof (MonoDllMap));
1130 entry->dll = dll? g_strdup (dll): NULL;
1131 entry->target = tdll? g_strdup (tdll): NULL;
1132 entry->func = func? g_strdup (func): NULL;
1133 entry->target_func = tfunc? g_strdup (tfunc): NULL;
1134 entry->next = global_dll_map;
1135 global_dll_map = entry;
1137 entry = mono_image_alloc0 (assembly, sizeof (MonoDllMap));
1138 entry->dll = dll? mono_image_strdup (assembly, dll): NULL;
1139 entry->target = tdll? mono_image_strdup (assembly, tdll): NULL;
1140 entry->func = func? mono_image_strdup (assembly, func): NULL;
1141 entry->target_func = tfunc? mono_image_strdup (assembly, tfunc): NULL;
1142 entry->next = assembly->dll_map;
1143 assembly->dll_map = entry;
1146 mono_loader_unlock ();
1149 static GHashTable *global_module_map;
1152 cached_module_load (const char *name, int flags, char **err)
1155 mono_loader_lock ();
1156 if (!global_module_map)
1157 global_module_map = g_hash_table_new (g_str_hash, g_str_equal);
1158 res = g_hash_table_lookup (global_module_map, name);
1161 mono_loader_unlock ();
1164 res = mono_dl_open (name, flags, err);
1166 g_hash_table_insert (global_module_map, g_strdup (name), res);
1167 mono_loader_unlock ();
1172 mono_lookup_pinvoke_call (MonoMethod *method, const char **exc_class, const char **exc_arg)
1174 MonoImage *image = method->klass->image;
1175 MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *)method;
1176 MonoTableInfo *tables = image->tables;
1177 MonoTableInfo *im = &tables [MONO_TABLE_IMPLMAP];
1178 MonoTableInfo *mr = &tables [MONO_TABLE_MODULEREF];
1179 guint32 im_cols [MONO_IMPLMAP_SIZE];
1180 guint32 scope_token;
1181 const char *import = NULL;
1182 const char *orig_scope;
1183 const char *new_scope;
1185 char *full_name, *file_name;
1187 MonoDl *module = NULL;
1189 g_assert (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL);
1192 return piinfo->addr;
1194 if (method->klass->image->dynamic) {
1195 MonoReflectionMethodAux *method_aux =
1196 g_hash_table_lookup (
1197 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
1201 import = method_aux->dllentry;
1202 orig_scope = method_aux->dll;
1205 if (!piinfo->implmap_idx)
1208 mono_metadata_decode_row (im, piinfo->implmap_idx - 1, im_cols, MONO_IMPLMAP_SIZE);
1210 piinfo->piflags = im_cols [MONO_IMPLMAP_FLAGS];
1211 import = mono_metadata_string_heap (image, im_cols [MONO_IMPLMAP_NAME]);
1212 scope_token = mono_metadata_decode_row_col (mr, im_cols [MONO_IMPLMAP_SCOPE] - 1, MONO_MODULEREF_NAME);
1213 orig_scope = mono_metadata_string_heap (image, scope_token);
1216 mono_dllmap_lookup (image, orig_scope, import, &new_scope, &import);
1218 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1219 "DllImport attempting to load: '%s'.", new_scope);
1226 /* we allow a special name to dlopen from the running process namespace */
1227 if (strcmp (new_scope, "__Internal") == 0)
1228 module = mono_dl_open (NULL, MONO_DL_LAZY, &error_msg);
1231 * Try loading the module using a variety of names
1233 for (i = 0; i < 4; ++i) {
1236 /* Try the original name */
1237 file_name = g_strdup (new_scope);
1240 /* Try trimming the .dll extension */
1241 if (strstr (new_scope, ".dll") == (new_scope + strlen (new_scope) - 4)) {
1242 file_name = g_strdup (new_scope);
1243 file_name [strlen (new_scope) - 4] = '\0';
1249 if (strstr (new_scope, "lib") != new_scope) {
1250 file_name = g_strdup_printf ("lib%s", new_scope);
1256 #ifndef TARGET_WIN32
1257 if (!g_ascii_strcasecmp ("user32.dll", new_scope) ||
1258 !g_ascii_strcasecmp ("kernel32.dll", new_scope) ||
1259 !g_ascii_strcasecmp ("user32", new_scope) ||
1260 !g_ascii_strcasecmp ("kernel", new_scope)) {
1261 file_name = g_strdup ("libMonoSupportW.so");
1265 #ifndef TARGET_WIN32
1272 while ((full_name = mono_dl_build_path (NULL, file_name, &iter))) {
1273 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1274 "DllImport loading location: '%s'.", full_name);
1275 module = cached_module_load (full_name, MONO_DL_LAZY, &error_msg);
1277 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1278 "DllImport error loading library: '%s'.",
1290 while ((full_name = mono_dl_build_path (".", file_name, &iter))) {
1291 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1292 "DllImport loading library: '%s'.", full_name);
1293 module = cached_module_load (full_name, MONO_DL_LAZY, &error_msg);
1295 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1296 "DllImport error loading library '%s'.",
1307 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1308 "DllImport loading: '%s'.", file_name);
1309 module = cached_module_load (file_name, MONO_DL_LAZY, &error_msg);
1311 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1312 "DllImport error loading library '%s'.",
1324 mono_trace (G_LOG_LEVEL_WARNING, MONO_TRACE_DLLIMPORT,
1325 "DllImport unable to load library '%s'.",
1330 *exc_class = "DllNotFoundException";
1331 *exc_arg = new_scope;
1336 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1337 "Searching for '%s'.", import);
1339 if (piinfo->piflags & PINVOKE_ATTRIBUTE_NO_MANGLE) {
1340 error_msg = mono_dl_symbol (module, import, &piinfo->addr);
1342 char *mangled_name = NULL, *mangled_name2 = NULL;
1345 int mangle_param_count;
1351 * Search using a variety of mangled names
1353 for (mangle_charset = 0; mangle_charset <= 1; mangle_charset ++) {
1354 for (mangle_stdcall = 0; mangle_stdcall <= 1; mangle_stdcall ++) {
1355 gboolean need_param_count = FALSE;
1357 if (mangle_stdcall > 0)
1358 need_param_count = TRUE;
1360 for (mangle_param_count = 0; mangle_param_count <= (need_param_count ? 256 : 0); mangle_param_count += 4) {
1365 mangled_name = (char*)import;
1366 switch (piinfo->piflags & PINVOKE_ATTRIBUTE_CHAR_SET_MASK) {
1367 case PINVOKE_ATTRIBUTE_CHAR_SET_UNICODE:
1368 /* Try the mangled name first */
1369 if (mangle_charset == 0)
1370 mangled_name = g_strconcat (import, "W", NULL);
1372 case PINVOKE_ATTRIBUTE_CHAR_SET_AUTO:
1374 if (mangle_charset == 0)
1375 mangled_name = g_strconcat (import, "W", NULL);
1377 /* Try the mangled name last */
1378 if (mangle_charset == 1)
1379 mangled_name = g_strconcat (import, "A", NULL);
1382 case PINVOKE_ATTRIBUTE_CHAR_SET_ANSI:
1384 /* Try the mangled name last */
1385 if (mangle_charset == 1)
1386 mangled_name = g_strconcat (import, "A", NULL);
1391 if (mangle_param_count == 0)
1392 param_count = mono_method_signature (method)->param_count * sizeof (gpointer);
1394 /* Try brute force, since it would be very hard to compute the stack usage correctly */
1395 param_count = mangle_param_count;
1397 /* Try the stdcall mangled name */
1399 * gcc under windows creates mangled names without the underscore, but MS.NET
1400 * doesn't support it, so we doesn't support it either.
1402 if (mangle_stdcall == 1)
1403 mangled_name2 = g_strdup_printf ("_%s@%d", mangled_name, param_count);
1405 mangled_name2 = mangled_name;
1407 mangled_name2 = mangled_name;
1410 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1411 "Probing '%s'.", mangled_name2);
1413 error_msg = mono_dl_symbol (module, mangled_name2, &piinfo->addr);
1416 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1417 "Found as '%s'.", mangled_name2);
1419 if (mangled_name != mangled_name2)
1420 g_free (mangled_name2);
1421 if (mangled_name != import)
1422 g_free (mangled_name);
1428 if (!piinfo->addr) {
1431 *exc_class = "EntryPointNotFoundException";
1436 return piinfo->addr;
1440 * LOCKING: assumes the loader lock to be taken.
1443 mono_get_method_from_token (MonoImage *image, guint32 token, MonoClass *klass,
1444 MonoGenericContext *context, gboolean *used_context)
1447 int table = mono_metadata_token_table (token);
1448 int idx = mono_metadata_token_index (token);
1449 MonoTableInfo *tables = image->tables;
1450 MonoGenericContainer *generic_container = NULL, *container = NULL;
1451 const char *sig = NULL;
1453 guint32 cols [MONO_TYPEDEF_SIZE];
1455 if (image->dynamic) {
1456 MonoClass *handle_class;
1458 result = mono_lookup_dynamic_token_class (image, token, TRUE, &handle_class, context);
1459 // This checks the memberref type as well
1460 if (result && handle_class != mono_defaults.methodhandle_class) {
1461 mono_loader_set_error_bad_image (g_strdup_printf ("Bad method token 0x%08x on image %s.", token, image->name));
1467 if (table != MONO_TABLE_METHOD) {
1468 if (table == MONO_TABLE_METHODSPEC) {
1469 if (used_context) *used_context = TRUE;
1470 return method_from_methodspec (image, context, idx);
1472 if (table != MONO_TABLE_MEMBERREF) {
1473 g_warning ("got wrong token: 0x%08x\n", token);
1474 mono_loader_set_error_bad_image (g_strdup_printf ("Bad method token 0x%08x on image %s.", token, image->name));
1477 return method_from_memberref (image, idx, context, used_context);
1480 if (used_context) *used_context = FALSE;
1482 if (idx > image->tables [MONO_TABLE_METHOD].rows) {
1483 mono_loader_set_error_bad_image (g_strdup_printf ("Bad method token 0x%08x on image %s.", token, image->name));
1487 mono_metadata_decode_row (&image->tables [MONO_TABLE_METHOD], idx - 1, cols, 6);
1489 if ((cols [2] & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
1490 (cols [1] & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL))
1491 result = (MonoMethod *)mono_image_alloc0 (image, sizeof (MonoMethodPInvoke));
1493 result = (MonoMethod *)mono_image_alloc0 (image, sizeof (MonoMethodNormal));
1495 mono_stats.method_count ++;
1497 if (!klass) { /*FIXME put this before the image alloc*/
1498 guint32 type = mono_metadata_typedef_from_method (image, token);
1501 klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF | type);
1507 result->klass = klass;
1508 result->flags = cols [2];
1509 result->iflags = cols [1];
1510 result->token = token;
1511 result->name = mono_metadata_string_heap (image, cols [3]);
1513 if (!sig) /* already taken from the methodref */
1514 sig = mono_metadata_blob_heap (image, cols [4]);
1515 size = mono_metadata_decode_blob_size (sig, &sig);
1517 container = klass->generic_container;
1520 * load_generic_params does a binary search so only call it if the method
1524 generic_container = mono_metadata_load_generic_params (image, token, container);
1525 if (generic_container) {
1526 result->is_generic = TRUE;
1527 generic_container->owner.method = result;
1528 /*FIXME put this before the image alloc*/
1529 if (!mono_metadata_load_generic_param_constraints_full (image, token, generic_container))
1532 container = generic_container;
1535 if (cols [1] & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) {
1536 if (result->klass == mono_defaults.string_class && !strcmp (result->name, ".ctor"))
1537 result->string_ctor = 1;
1538 } else if (cols [2] & METHOD_ATTRIBUTE_PINVOKE_IMPL) {
1539 MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *)result;
1542 /* IJW is P/Invoke with a predefined function pointer. */
1543 if (image->is_module_handle && (cols [1] & METHOD_IMPL_ATTRIBUTE_NATIVE)) {
1544 piinfo->addr = mono_image_rva_map (image, cols [0]);
1545 g_assert (piinfo->addr);
1548 piinfo->implmap_idx = mono_metadata_implmap_from_method (image, idx - 1);
1549 /* Native methods can have no map. */
1550 if (piinfo->implmap_idx)
1551 piinfo->piflags = mono_metadata_decode_row_col (&tables [MONO_TABLE_IMPLMAP], piinfo->implmap_idx - 1, MONO_IMPLMAP_FLAGS);
1554 if (generic_container)
1555 mono_method_set_generic_container (result, generic_container);
1561 mono_get_method (MonoImage *image, guint32 token, MonoClass *klass)
1563 return mono_get_method_full (image, token, klass, NULL);
1567 mono_get_method_full (MonoImage *image, guint32 token, MonoClass *klass,
1568 MonoGenericContext *context)
1571 gboolean used_context = FALSE;
1573 /* We do everything inside the lock to prevent creation races */
1575 mono_image_lock (image);
1577 if (mono_metadata_token_table (token) == MONO_TABLE_METHOD) {
1578 if (!image->method_cache)
1579 image->method_cache = g_hash_table_new (NULL, NULL);
1580 result = g_hash_table_lookup (image->method_cache, GINT_TO_POINTER (mono_metadata_token_index (token)));
1582 if (!image->methodref_cache)
1583 image->methodref_cache = g_hash_table_new (NULL, NULL);
1584 result = g_hash_table_lookup (image->methodref_cache, GINT_TO_POINTER (token));
1586 mono_image_unlock (image);
1591 result = mono_get_method_from_token (image, token, klass, context, &used_context);
1595 mono_image_lock (image);
1596 if (!used_context && !result->is_inflated) {
1597 MonoMethod *result2;
1598 if (mono_metadata_token_table (token) == MONO_TABLE_METHOD)
1599 result2 = g_hash_table_lookup (image->method_cache, GINT_TO_POINTER (mono_metadata_token_index (token)));
1601 result2 = g_hash_table_lookup (image->methodref_cache, GINT_TO_POINTER (token));
1604 mono_image_unlock (image);
1608 if (mono_metadata_token_table (token) == MONO_TABLE_METHOD)
1609 g_hash_table_insert (image->method_cache, GINT_TO_POINTER (mono_metadata_token_index (token)), result);
1611 g_hash_table_insert (image->methodref_cache, GINT_TO_POINTER (token), result);
1614 mono_image_unlock (image);
1620 * mono_get_method_constrained:
1622 * This is used when JITing the `constrained.' opcode.
1624 * This returns two values: the contrained method, which has been inflated
1625 * as the function return value; And the original CIL-stream method as
1626 * declared in cil_method. The later is used for verification.
1629 mono_get_method_constrained (MonoImage *image, guint32 token, MonoClass *constrained_class,
1630 MonoGenericContext *context, MonoMethod **cil_method)
1632 MonoMethod *method, *result;
1633 MonoClass *ic = NULL;
1634 MonoGenericContext *method_context = NULL;
1635 MonoMethodSignature *sig, *original_sig;
1637 mono_loader_lock ();
1639 *cil_method = mono_get_method_from_token (image, token, NULL, context, NULL);
1641 mono_loader_unlock ();
1645 mono_class_init (constrained_class);
1646 method = *cil_method;
1647 original_sig = sig = mono_method_signature (method);
1651 if (method->is_inflated && sig->generic_param_count) {
1652 MonoMethodInflated *imethod = (MonoMethodInflated *) method;
1653 sig = mono_method_signature (imethod->declaring); /*We assume that if the inflated method signature is valid, the declaring method is too*/
1654 method_context = mono_method_get_context (method);
1658 * We must inflate the signature with the class instantiation to work on
1659 * cases where a class inherit from a generic type and the override replaces
1660 * any type argument which a concrete type. See #325283.
1662 if (method_context->class_inst) {
1663 MonoGenericContext ctx;
1664 ctx.method_inst = NULL;
1665 ctx.class_inst = method_context->class_inst;
1667 sig = inflate_generic_signature (method->klass->image, sig, &ctx);
1673 if ((constrained_class != method->klass) && (MONO_CLASS_IS_INTERFACE (method->klass)))
1676 result = find_method (constrained_class, ic, method->name, sig, constrained_class);
1677 if (sig != original_sig)
1678 mono_metadata_free_inflated_signature (sig);
1681 g_warning ("Missing method %s.%s.%s in assembly %s token %x", method->klass->name_space,
1682 method->klass->name, method->name, image->name, token);
1683 mono_loader_unlock ();
1688 result = mono_class_inflate_generic_method (result, method_context);
1690 mono_loader_unlock ();
1695 mono_free_method (MonoMethod *method)
1697 if (mono_profiler_get_events () & MONO_PROFILE_METHOD_EVENTS)
1698 mono_profiler_method_free (method);
1700 /* FIXME: This hack will go away when the profiler will support freeing methods */
1701 if (mono_profiler_get_events () != MONO_PROFILE_NONE)
1704 if (method->signature) {
1706 * FIXME: This causes crashes because the types inside signatures and
1707 * locals are shared.
1709 /* mono_metadata_free_method_signature (method->signature); */
1710 /* g_free (method->signature); */
1713 if (method->dynamic) {
1714 MonoMethodWrapper *mw = (MonoMethodWrapper*)method;
1717 mono_marshal_free_dynamic_wrappers (method);
1719 mono_image_property_remove (method->klass->image, method);
1721 g_free ((char*)method->name);
1722 if (mw->method.header) {
1723 g_free ((char*)mw->method.header->code);
1724 for (i = 0; i < mw->method.header->num_locals; ++i)
1725 g_free (mw->method.header->locals [i]);
1726 g_free (mw->method.header->clauses);
1727 g_free (mw->method.header);
1729 g_free (mw->method_data);
1730 g_free (method->signature);
1736 mono_method_get_param_names (MonoMethod *method, const char **names)
1740 MonoTableInfo *methodt;
1741 MonoTableInfo *paramt;
1742 MonoMethodSignature *signature;
1745 if (method->is_inflated)
1746 method = ((MonoMethodInflated *) method)->declaring;
1748 signature = mono_method_signature (method);
1749 /*FIXME this check is somewhat redundant since the caller usally will have to get the signature to figure out the
1750 number of arguments and allocate a properly sized array. */
1751 if (signature == NULL)
1754 if (!signature->param_count)
1757 for (i = 0; i < signature->param_count; ++i)
1760 klass = method->klass;
1764 mono_class_init (klass);
1766 if (klass->image->dynamic) {
1767 MonoReflectionMethodAux *method_aux =
1768 g_hash_table_lookup (
1769 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
1770 if (method_aux && method_aux->param_names) {
1771 for (i = 0; i < mono_method_signature (method)->param_count; ++i)
1772 if (method_aux->param_names [i + 1])
1773 names [i] = method_aux->param_names [i + 1];
1778 methodt = &klass->image->tables [MONO_TABLE_METHOD];
1779 paramt = &klass->image->tables [MONO_TABLE_PARAM];
1780 idx = mono_method_get_index (method);
1782 guint32 cols [MONO_PARAM_SIZE];
1785 param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
1787 if (idx < methodt->rows)
1788 lastp = mono_metadata_decode_row_col (methodt, idx, MONO_METHOD_PARAMLIST);
1790 lastp = paramt->rows + 1;
1791 for (i = param_index; i < lastp; ++i) {
1792 mono_metadata_decode_row (paramt, i -1, cols, MONO_PARAM_SIZE);
1793 if (cols [MONO_PARAM_SEQUENCE] && cols [MONO_PARAM_SEQUENCE] <= signature->param_count) /* skip return param spec and bounds check*/
1794 names [cols [MONO_PARAM_SEQUENCE] - 1] = mono_metadata_string_heap (klass->image, cols [MONO_PARAM_NAME]);
1800 mono_method_get_param_token (MonoMethod *method, int index)
1802 MonoClass *klass = method->klass;
1803 MonoTableInfo *methodt;
1806 mono_class_init (klass);
1808 if (klass->image->dynamic) {
1809 g_assert_not_reached ();
1812 methodt = &klass->image->tables [MONO_TABLE_METHOD];
1813 idx = mono_method_get_index (method);
1815 guint param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
1819 return mono_metadata_make_token (MONO_TABLE_PARAM, 0);
1821 return mono_metadata_make_token (MONO_TABLE_PARAM, param_index + index);
1828 mono_method_get_marshal_info (MonoMethod *method, MonoMarshalSpec **mspecs)
1831 MonoClass *klass = method->klass;
1832 MonoTableInfo *methodt;
1833 MonoTableInfo *paramt;
1834 MonoMethodSignature *signature;
1837 signature = mono_method_signature (method);
1838 g_assert (signature); /*FIXME there is no way to signal error from this function*/
1840 for (i = 0; i < signature->param_count + 1; ++i)
1843 if (method->klass->image->dynamic) {
1844 MonoReflectionMethodAux *method_aux =
1845 g_hash_table_lookup (
1846 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
1847 if (method_aux && method_aux->param_marshall) {
1848 MonoMarshalSpec **dyn_specs = method_aux->param_marshall;
1849 for (i = 0; i < signature->param_count + 1; ++i)
1850 if (dyn_specs [i]) {
1851 mspecs [i] = g_new0 (MonoMarshalSpec, 1);
1852 memcpy (mspecs [i], dyn_specs [i], sizeof (MonoMarshalSpec));
1858 mono_class_init (klass);
1860 methodt = &klass->image->tables [MONO_TABLE_METHOD];
1861 paramt = &klass->image->tables [MONO_TABLE_PARAM];
1862 idx = mono_method_get_index (method);
1864 guint32 cols [MONO_PARAM_SIZE];
1865 guint param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
1867 if (idx < methodt->rows)
1868 lastp = mono_metadata_decode_row_col (methodt, idx, MONO_METHOD_PARAMLIST);
1870 lastp = paramt->rows + 1;
1872 for (i = param_index; i < lastp; ++i) {
1873 mono_metadata_decode_row (paramt, i -1, cols, MONO_PARAM_SIZE);
1875 if (cols [MONO_PARAM_FLAGS] & PARAM_ATTRIBUTE_HAS_FIELD_MARSHAL && cols [MONO_PARAM_SEQUENCE] <= signature->param_count) {
1877 tp = mono_metadata_get_marshal_info (klass->image, i - 1, FALSE);
1879 mspecs [cols [MONO_PARAM_SEQUENCE]]= mono_metadata_parse_marshal_spec (klass->image, tp);
1888 mono_method_has_marshal_info (MonoMethod *method)
1891 MonoClass *klass = method->klass;
1892 MonoTableInfo *methodt;
1893 MonoTableInfo *paramt;
1896 if (method->klass->image->dynamic) {
1897 MonoReflectionMethodAux *method_aux =
1898 g_hash_table_lookup (
1899 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
1900 MonoMarshalSpec **dyn_specs = method_aux->param_marshall;
1902 for (i = 0; i < mono_method_signature (method)->param_count + 1; ++i)
1909 mono_class_init (klass);
1911 methodt = &klass->image->tables [MONO_TABLE_METHOD];
1912 paramt = &klass->image->tables [MONO_TABLE_PARAM];
1913 idx = mono_method_get_index (method);
1915 guint32 cols [MONO_PARAM_SIZE];
1916 guint param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
1918 if (idx + 1 < methodt->rows)
1919 lastp = mono_metadata_decode_row_col (methodt, idx, MONO_METHOD_PARAMLIST);
1921 lastp = paramt->rows + 1;
1923 for (i = param_index; i < lastp; ++i) {
1924 mono_metadata_decode_row (paramt, i -1, cols, MONO_PARAM_SIZE);
1926 if (cols [MONO_PARAM_FLAGS] & PARAM_ATTRIBUTE_HAS_FIELD_MARSHAL)
1935 mono_method_get_wrapper_data (MonoMethod *method, guint32 id)
1938 g_assert (method != NULL);
1939 g_assert (method->wrapper_type != MONO_WRAPPER_NONE);
1941 if (method->is_inflated)
1942 method = ((MonoMethodInflated *) method)->declaring;
1943 data = ((MonoMethodWrapper *)method)->method_data;
1944 g_assert (data != NULL);
1945 g_assert (id <= GPOINTER_TO_UINT (*data));
1950 default_stack_walk (MonoStackWalk func, gboolean do_il_offset, gpointer user_data) {
1951 g_error ("stack walk not installed");
1954 static MonoStackWalkImpl stack_walk = default_stack_walk;
1957 mono_stack_walk (MonoStackWalk func, gpointer user_data)
1959 stack_walk (func, TRUE, user_data);
1963 mono_stack_walk_no_il (MonoStackWalk func, gpointer user_data)
1965 stack_walk (func, FALSE, user_data);
1969 mono_install_stack_walk (MonoStackWalkImpl func)
1975 last_managed (MonoMethod *m, gint no, gint ilo, gboolean managed, gpointer data)
1977 MonoMethod **dest = data;
1979 /*g_print ("In %s::%s [%d] [%d]\n", m->klass->name, m->name, no, ilo);*/
1985 mono_method_get_last_managed (void)
1987 MonoMethod *m = NULL;
1988 stack_walk (last_managed, FALSE, &m);
1992 static gboolean loader_lock_track_ownership = FALSE;
1997 * See docs/thread-safety.txt for the locking strategy.
2000 mono_loader_lock (void)
2002 mono_locks_acquire (&loader_mutex, LoaderLock);
2003 if (G_UNLIKELY (loader_lock_track_ownership)) {
2004 TlsSetValue (loader_lock_nest_id, GUINT_TO_POINTER (GPOINTER_TO_UINT (TlsGetValue (loader_lock_nest_id)) + 1));
2009 mono_loader_unlock (void)
2011 mono_locks_release (&loader_mutex, LoaderLock);
2012 if (G_UNLIKELY (loader_lock_track_ownership)) {
2013 TlsSetValue (loader_lock_nest_id, GUINT_TO_POINTER (GPOINTER_TO_UINT (TlsGetValue (loader_lock_nest_id)) - 1));
2018 * mono_loader_lock_track_ownership:
2020 * Set whenever the runtime should track ownership of the loader lock. If set to TRUE,
2021 * the mono_loader_lock_is_owned_by_self () can be called to query whenever the current
2022 * thread owns the loader lock.
2025 mono_loader_lock_track_ownership (gboolean track)
2027 loader_lock_track_ownership = track;
2031 * mono_loader_lock_is_owned_by_self:
2033 * Return whenever the current thread owns the loader lock.
2034 * This is useful to avoid blocking operations while holding the loader lock.
2037 mono_loader_lock_is_owned_by_self (void)
2039 g_assert (loader_lock_track_ownership);
2041 return GPOINTER_TO_UINT (TlsGetValue (loader_lock_nest_id)) > 0;
2045 * mono_method_signature:
2047 * Return the signature of the method M. On failure, returns NULL.
2049 MonoMethodSignature*
2050 mono_method_signature (MonoMethod *m)
2056 gboolean can_cache_signature;
2057 MonoGenericContainer *container;
2058 MonoMethodSignature *signature = NULL;
2061 /* We need memory barriers below because of the double-checked locking pattern */
2064 return m->signature;
2066 mono_loader_lock ();
2069 mono_loader_unlock ();
2070 return m->signature;
2073 if (m->is_inflated) {
2074 MonoMethodInflated *imethod = (MonoMethodInflated *) m;
2075 /* the lock is recursive */
2076 signature = mono_method_signature (imethod->declaring);
2077 signature = inflate_generic_signature (imethod->declaring->klass->image, signature, mono_method_get_context (m));
2079 inflated_signatures_size += mono_metadata_signature_size (signature);
2081 mono_memory_barrier ();
2082 m->signature = signature;
2083 mono_loader_unlock ();
2084 return m->signature;
2087 g_assert (mono_metadata_token_table (m->token) == MONO_TABLE_METHOD);
2088 idx = mono_metadata_token_index (m->token);
2089 img = m->klass->image;
2091 sig = mono_metadata_blob_heap (img, sig_offset = mono_metadata_decode_row_col (&img->tables [MONO_TABLE_METHOD], idx - 1, MONO_METHOD_SIGNATURE));
2093 g_assert (!m->klass->generic_class);
2094 container = mono_method_get_generic_container (m);
2096 container = m->klass->generic_container;
2098 /* Generic signatures depend on the container so they cannot be cached */
2099 /* icall/pinvoke signatures cannot be cached cause we modify them below */
2100 can_cache_signature = !(m->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && !(m->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) && !container;
2102 /* If the method has parameter attributes, that can modify the signature */
2103 if (mono_metadata_method_has_param_attrs (img, idx))
2104 can_cache_signature = FALSE;
2106 if (can_cache_signature)
2107 signature = g_hash_table_lookup (img->method_signatures, sig);
2110 const char *sig_body;
2111 /*TODO we should cache the failure result somewhere*/
2112 if (!mono_verifier_verify_method_signature (img, sig_offset, NULL)) {
2113 mono_loader_unlock ();
2117 size = mono_metadata_decode_blob_size (sig, &sig_body);
2119 signature = mono_metadata_parse_method_signature_full (img, container, idx, sig_body, NULL);
2121 mono_loader_unlock ();
2125 if (can_cache_signature)
2126 g_hash_table_insert (img->method_signatures, (gpointer)sig, signature);
2129 /* Verify metadata consistency */
2130 if (signature->generic_param_count) {
2131 if (!container || !container->is_method) {
2132 g_warning ("Signature claims method has generic parameters, but generic_params table says it doesn't for method 0x%08x from image %s", idx, img->name);
2133 mono_loader_unlock ();
2136 if (container->type_argc != signature->generic_param_count) {
2137 g_warning ("Inconsistent generic parameter count. Signature says %d, generic_params table says %d for method 0x%08x from image %s",
2138 signature->generic_param_count, container->type_argc, idx, img->name);
2139 mono_loader_unlock ();
2142 } else if (container && container->is_method && container->type_argc) {
2143 g_warning ("generic_params table claims method has generic parameters, but signature says it doesn't for method 0x%08x from image %s", idx, img->name);
2144 mono_loader_unlock ();
2147 if (m->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL)
2148 signature->pinvoke = 1;
2149 else if (m->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) {
2150 MonoCallConvention conv = 0;
2151 MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *)m;
2152 signature->pinvoke = 1;
2154 switch (piinfo->piflags & PINVOKE_ATTRIBUTE_CALL_CONV_MASK) {
2155 case 0: /* no call conv, so using default */
2156 case PINVOKE_ATTRIBUTE_CALL_CONV_WINAPI:
2157 conv = MONO_CALL_DEFAULT;
2159 case PINVOKE_ATTRIBUTE_CALL_CONV_CDECL:
2162 case PINVOKE_ATTRIBUTE_CALL_CONV_STDCALL:
2163 conv = MONO_CALL_STDCALL;
2165 case PINVOKE_ATTRIBUTE_CALL_CONV_THISCALL:
2166 conv = MONO_CALL_THISCALL;
2168 case PINVOKE_ATTRIBUTE_CALL_CONV_FASTCALL:
2169 conv = MONO_CALL_FASTCALL;
2171 case PINVOKE_ATTRIBUTE_CALL_CONV_GENERIC:
2172 case PINVOKE_ATTRIBUTE_CALL_CONV_GENERICINST:
2174 g_warning ("unsupported calling convention : 0x%04x for method 0x%08x from image %s", piinfo->piflags, idx, img->name);
2175 mono_loader_unlock ();
2178 signature->call_convention = conv;
2181 mono_memory_barrier ();
2182 m->signature = signature;
2184 mono_loader_unlock ();
2185 return m->signature;
2189 mono_method_get_name (MonoMethod *method)
2191 return method->name;
2195 mono_method_get_class (MonoMethod *method)
2197 return method->klass;
2201 mono_method_get_token (MonoMethod *method)
2203 return method->token;
2207 mono_method_get_header (MonoMethod *method)
2213 MonoMethodNormal* mn = (MonoMethodNormal*) method;
2214 MonoMethodHeader *header;
2216 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))
2220 if (G_LIKELY (mn->header))
2226 if (method->is_inflated) {
2227 MonoMethodInflated *imethod = (MonoMethodInflated *) method;
2228 MonoMethodHeader *header;
2230 header = mono_method_get_header (imethod->declaring);
2232 mono_loader_lock ();
2235 mono_loader_unlock ();
2239 mn->header = inflate_generic_header (header, mono_method_get_context (method));
2240 mono_loader_unlock ();
2245 * Do most of the work outside the loader lock, to avoid assembly loader hook
2248 g_assert (mono_metadata_token_table (method->token) == MONO_TABLE_METHOD);
2249 idx = mono_metadata_token_index (method->token);
2250 img = method->klass->image;
2251 rva = mono_metadata_decode_row_col (&img->tables [MONO_TABLE_METHOD], idx - 1, MONO_METHOD_RVA);
2253 if (!mono_verifier_verify_method_header (img, rva, NULL))
2256 loc = mono_image_rva_map (img, rva);
2259 header = mono_metadata_parse_mh_full (img, mono_method_get_generic_container (method), loc);
2261 mono_loader_lock ();
2264 /* header is allocated from the image mempool, no need to free it */
2265 mono_loader_unlock ();
2269 mono_memory_barrier ();
2271 mn->header = header;
2273 mono_loader_unlock ();
2278 mono_method_get_flags (MonoMethod *method, guint32 *iflags)
2281 *iflags = method->iflags;
2282 return method->flags;
2286 * Find the method index in the metadata methodDef table.
2289 mono_method_get_index (MonoMethod *method) {
2290 MonoClass *klass = method->klass;
2294 return mono_metadata_token_index (method->token);
2296 mono_class_setup_methods (klass);
2297 for (i = 0; i < klass->method.count; ++i) {
2298 if (method == klass->methods [i]) {
2299 if (klass->image->uncompressed_metadata)
2300 return mono_metadata_translate_token_index (klass->image, MONO_TABLE_METHOD, klass->method.first + i + 1);
2302 return klass->method.first + i + 1;