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;
69 static gboolean inited;
72 InitializeCriticalSection (&loader_mutex);
74 loader_error_thread_id = TlsAlloc ();
76 mono_counters_register ("Inflated signatures size",
77 MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &inflated_signatures_size);
78 mono_counters_register ("Memberref signature cache size",
79 MONO_COUNTER_METADATA | MONO_COUNTER_INT, &memberref_sig_cache_size);
86 mono_loader_cleanup (void)
88 TlsFree (loader_error_thread_id);
90 /*DeleteCriticalSection (&loader_mutex);*/
94 * Handling of type load errors should be done as follows:
96 * If something could not be loaded, the loader should call one of the
97 * mono_loader_set_error_XXX functions ()
98 * with the appropriate arguments, then return NULL to report the failure. The error
99 * should be propagated until it reaches code which can throw managed exceptions. At that
100 * point, an exception should be thrown based on the information returned by
101 * mono_loader_get_last_error (). Then the error should be cleared by calling
102 * mono_loader_clear_error ().
106 set_loader_error (MonoLoaderError *error)
108 TlsSetValue (loader_error_thread_id, error);
112 * mono_loader_set_error_assembly_load:
114 * Set the loader error for this thread.
117 mono_loader_set_error_assembly_load (const char *assembly_name, gboolean ref_only)
119 MonoLoaderError *error;
121 if (mono_loader_get_last_error ())
124 error = g_new0 (MonoLoaderError, 1);
125 error->exception_type = MONO_EXCEPTION_FILE_NOT_FOUND;
126 error->assembly_name = g_strdup (assembly_name);
127 error->ref_only = ref_only;
130 * This is not strictly needed, but some (most) of the loader code still
131 * can't deal with load errors, and this message is more helpful than an
135 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);
137 g_warning ("Could not load file or assembly '%s' or one of its dependencies.", assembly_name);
139 set_loader_error (error);
143 * mono_loader_set_error_type_load:
145 * Set the loader error for this thread.
148 mono_loader_set_error_type_load (const char *class_name, const char *assembly_name)
150 MonoLoaderError *error;
152 if (mono_loader_get_last_error ())
155 error = g_new0 (MonoLoaderError, 1);
156 error->exception_type = MONO_EXCEPTION_TYPE_LOAD;
157 error->class_name = g_strdup (class_name);
158 error->assembly_name = g_strdup (assembly_name);
161 * This is not strictly needed, but some (most) of the loader code still
162 * can't deal with load errors, and this message is more helpful than an
165 g_warning ("The class %s could not be loaded, used in %s", class_name, assembly_name);
167 set_loader_error (error);
171 * mono_loader_set_error_method_load:
173 * Set the loader error for this thread. MEMBER_NAME should point to a string
177 mono_loader_set_error_method_load (const char *class_name, const char *member_name)
179 MonoLoaderError *error;
181 /* FIXME: Store the signature as well */
182 if (mono_loader_get_last_error ())
185 error = g_new0 (MonoLoaderError, 1);
186 error->exception_type = MONO_EXCEPTION_MISSING_METHOD;
187 error->class_name = g_strdup (class_name);
188 error->member_name = member_name;
190 set_loader_error (error);
194 * mono_loader_set_error_field_load:
196 * Set the loader error for this thread. MEMBER_NAME should point to a string
200 mono_loader_set_error_field_load (MonoClass *klass, const char *member_name)
202 MonoLoaderError *error;
204 /* FIXME: Store the signature as well */
205 if (mono_loader_get_last_error ())
208 error = g_new0 (MonoLoaderError, 1);
209 error->exception_type = MONO_EXCEPTION_MISSING_FIELD;
210 error->klass = klass;
211 error->member_name = member_name;
213 set_loader_error (error);
217 * mono_loader_set_error_bad_image:
219 * Set the loader error for this thread.
222 mono_loader_set_error_bad_image (char *msg)
224 MonoLoaderError *error;
226 if (mono_loader_get_last_error ())
229 error = g_new0 (MonoLoaderError, 1);
230 error->exception_type = MONO_EXCEPTION_BAD_IMAGE;
233 set_loader_error (error);
238 * mono_loader_get_last_error:
240 * Returns information about the last type load exception encountered by the loader, or
241 * NULL. After use, the exception should be cleared by calling mono_loader_clear_error.
244 mono_loader_get_last_error (void)
246 return (MonoLoaderError*)TlsGetValue (loader_error_thread_id);
250 * mono_loader_clear_error:
252 * Disposes any loader error messages on this thread
255 mono_loader_clear_error (void)
257 MonoLoaderError *ex = (MonoLoaderError*)TlsGetValue (loader_error_thread_id);
260 g_free (ex->class_name);
261 g_free (ex->assembly_name);
265 TlsSetValue (loader_error_thread_id, NULL);
270 * mono_loader_error_prepare_exception:
271 * @error: The MonoLoaderError to turn into an exception
273 * This turns a MonoLoaderError into an exception that can be thrown
274 * and resets the Mono Loader Error state during this process.
278 mono_loader_error_prepare_exception (MonoLoaderError *error)
280 MonoException *ex = NULL;
282 switch (error->exception_type) {
283 case MONO_EXCEPTION_TYPE_LOAD: {
284 char *cname = g_strdup (error->class_name);
285 char *aname = g_strdup (error->assembly_name);
286 MonoString *class_name;
288 mono_loader_clear_error ();
290 class_name = mono_string_new (mono_domain_get (), cname);
292 ex = mono_get_exception_type_load (class_name, aname);
297 case MONO_EXCEPTION_MISSING_METHOD: {
298 char *cname = g_strdup (error->class_name);
299 char *aname = g_strdup (error->member_name);
301 mono_loader_clear_error ();
302 ex = mono_get_exception_missing_method (cname, aname);
308 case MONO_EXCEPTION_MISSING_FIELD: {
309 char *cnspace = g_strdup (*error->klass->name_space ? error->klass->name_space : "");
310 char *cname = g_strdup (error->klass->name);
311 char *cmembername = g_strdup (error->member_name);
314 mono_loader_clear_error ();
315 class_name = g_strdup_printf ("%s%s%s", cnspace, cnspace ? "." : "", cname);
317 ex = mono_get_exception_missing_field (class_name, cmembername);
320 g_free (cmembername);
325 case MONO_EXCEPTION_FILE_NOT_FOUND: {
330 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);
332 msg = g_strdup_printf ("Could not load file or assembly '%s' or one of its dependencies.", error->assembly_name);
333 filename = g_strdup (error->assembly_name);
334 /* Has to call this before calling anything which might call mono_class_init () */
335 mono_loader_clear_error ();
336 ex = mono_get_exception_file_not_found2 (msg, mono_string_new (mono_domain_get (), filename));
342 case MONO_EXCEPTION_BAD_IMAGE: {
343 char *msg = g_strdup (error->msg);
344 mono_loader_clear_error ();
345 ex = mono_get_exception_bad_image_format (msg);
351 g_assert_not_reached ();
358 * find_cached_memberref_sig:
360 * Return a cached copy of the memberref signature identified by SIG_IDX.
361 * We use a gpointer since the cache stores both MonoTypes and MonoMethodSignatures.
362 * A cache is needed since the type/signature parsing routines allocate everything
363 * from a mempool, so without a cache, multiple requests for the same signature would
364 * lead to unbounded memory growth. For normal methods/fields this is not a problem
365 * since the resulting methods/fields are cached, but inflated methods/fields cannot
367 * LOCKING: Acquires the loader lock.
370 find_cached_memberref_sig (MonoImage *image, guint32 sig_idx)
375 res = g_hash_table_lookup (image->memberref_signatures, GUINT_TO_POINTER (sig_idx));
376 mono_loader_unlock ();
382 cache_memberref_sig (MonoImage *image, guint32 sig_idx, gpointer sig)
387 prev_sig = g_hash_table_lookup (image->memberref_signatures, GUINT_TO_POINTER (sig_idx));
389 /* Somebody got in before us */
393 g_hash_table_insert (image->memberref_signatures, GUINT_TO_POINTER (sig_idx), sig);
394 /* An approximation based on glib 2.18 */
395 memberref_sig_cache_size += sizeof (gpointer) * 4;
398 mono_loader_unlock ();
403 static MonoClassField*
404 field_from_memberref (MonoImage *image, guint32 token, MonoClass **retklass,
405 MonoGenericContext *context)
408 MonoClassField *field, *sig_field = NULL;
409 MonoTableInfo *tables = image->tables;
412 guint32 nindex, class;
415 guint32 idx = mono_metadata_token_index (token);
417 mono_metadata_decode_row (&tables [MONO_TABLE_MEMBERREF], idx-1, cols, MONO_MEMBERREF_SIZE);
418 nindex = cols [MONO_MEMBERREF_CLASS] >> MONO_MEMBERREF_PARENT_BITS;
419 class = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
421 fname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
423 if (!mono_verifier_verify_memberref_signature (image, cols [MONO_MEMBERREF_SIGNATURE], NULL)) {
424 mono_loader_set_error_bad_image (g_strdup_printf ("Bad field signature class token %08x field name %s token %08x", class, fname, token));
428 ptr = mono_metadata_blob_heap (image, cols [MONO_MEMBERREF_SIGNATURE]);
429 mono_metadata_decode_blob_size (ptr, &ptr);
430 /* we may want to check the signature here... */
433 mono_loader_set_error_bad_image (g_strdup_printf ("Bad field signature class token %08x field name %s token %08x", class, fname, token));
436 /* FIXME: This needs a cache, especially for generic instances, since
437 * mono_metadata_parse_type () allocates everything from a mempool.
439 sig_type = find_cached_memberref_sig (image, cols [MONO_MEMBERREF_SIGNATURE]);
441 sig_type = mono_metadata_parse_type (image, MONO_PARSE_TYPE, 0, ptr, &ptr);
442 sig_type = cache_memberref_sig (image, cols [MONO_MEMBERREF_SIGNATURE], sig_type);
446 case MONO_MEMBERREF_PARENT_TYPEDEF:
447 klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF | nindex);
449 char *name = mono_class_name_from_token (image, MONO_TOKEN_TYPE_DEF | nindex);
450 g_warning ("Missing field %s in class %s (typedef index %d)", fname, name, nindex);
451 mono_loader_set_error_type_load (name, image->assembly_name);
455 mono_class_init (klass);
458 sig_field = field = mono_class_get_field_from_name (klass, fname);
460 case MONO_MEMBERREF_PARENT_TYPEREF:
461 klass = mono_class_from_typeref (image, MONO_TOKEN_TYPE_REF | nindex);
463 char *name = mono_class_name_from_token (image, MONO_TOKEN_TYPE_REF | nindex);
464 g_warning ("missing field %s in class %s (typeref index %d)", fname, name, nindex);
465 mono_loader_set_error_type_load (name, image->assembly_name);
469 mono_class_init (klass);
472 sig_field = field = mono_class_get_field_from_name (klass, fname);
474 case MONO_MEMBERREF_PARENT_TYPESPEC: {
475 klass = mono_class_get_full (image, MONO_TOKEN_TYPE_SPEC | nindex, context);
476 //FIXME can't klass be null?
477 mono_class_init (klass);
480 field = mono_class_get_field_from_name (klass, fname);
482 sig_field = mono_metadata_get_corresponding_field_from_generic_type_definition (field);
486 g_warning ("field load from %x", class);
491 mono_loader_set_error_field_load (klass, fname);
492 else if (sig_field && !mono_metadata_type_equal_full (sig_type, sig_field->type, TRUE)) {
493 mono_loader_set_error_field_load (klass, fname);
501 mono_field_from_token (MonoImage *image, guint32 token, MonoClass **retklass,
502 MonoGenericContext *context)
506 MonoClassField *field;
508 if (image->dynamic) {
509 MonoClassField *result;
510 MonoClass *handle_class;
513 result = mono_lookup_dynamic_token_class (image, token, TRUE, &handle_class, context);
514 // This checks the memberref type as well
515 if (result && handle_class != mono_defaults.fieldhandle_class) {
516 mono_loader_set_error_bad_image (g_strdup ("Bad field token."));
519 *retklass = result->parent;
524 if ((field = g_hash_table_lookup (image->field_cache, GUINT_TO_POINTER (token)))) {
525 *retklass = field->parent;
526 mono_loader_unlock ();
529 mono_loader_unlock ();
531 if (mono_metadata_token_table (token) == MONO_TABLE_MEMBERREF)
532 field = field_from_memberref (image, token, retklass, context);
534 type = mono_metadata_typedef_from_field (image, mono_metadata_token_index (token));
537 k = mono_class_get (image, MONO_TOKEN_TYPE_DEF | type);
543 field = mono_class_get_field (k, token);
547 if (field && field->parent && !field->parent->generic_class && !field->parent->generic_container)
548 g_hash_table_insert (image->field_cache, GUINT_TO_POINTER (token), field);
549 mono_loader_unlock ();
554 mono_metadata_signature_vararg_match (MonoMethodSignature *sig1, MonoMethodSignature *sig2)
558 if (sig1->hasthis != sig2->hasthis ||
559 sig1->sentinelpos != sig2->sentinelpos)
562 for (i = 0; i < sig1->sentinelpos; i++) {
563 MonoType *p1 = sig1->params[i];
564 MonoType *p2 = sig2->params[i];
566 /*if (p1->attrs != p2->attrs)
569 if (!mono_metadata_type_equal (p1, p2))
573 if (!mono_metadata_type_equal (sig1->ret, sig2->ret))
579 find_method_in_class (MonoClass *klass, const char *name, const char *qname, const char *fqname,
580 MonoMethodSignature *sig, MonoClass *from_class)
584 /* Search directly in the metadata to avoid calling setup_methods () */
586 /* FIXME: !from_class->generic_class condition causes test failures. */
587 if (klass->type_token && !klass->image->dynamic && !klass->methods && !klass->rank && klass == from_class && !from_class->generic_class) {
588 for (i = 0; i < klass->method.count; ++i) {
589 guint32 cols [MONO_METHOD_SIZE];
593 mono_metadata_decode_table_row (klass->image, MONO_TABLE_METHOD, klass->method.first + i, cols, MONO_METHOD_SIZE);
595 m_name = mono_metadata_string_heap (klass->image, cols [MONO_METHOD_NAME]);
597 if (!((fqname && !strcmp (m_name, fqname)) ||
598 (qname && !strcmp (m_name, qname)) ||
599 (name && !strcmp (m_name, name))))
602 method = mono_get_method (klass->image, MONO_TOKEN_METHOD_DEF | (klass->method.first + i + 1), klass);
603 if (method && (sig->call_convention != MONO_CALL_VARARG) && mono_metadata_signature_equal (sig, mono_method_signature (method)))
608 mono_class_setup_methods (klass);
609 for (i = 0; i < klass->method.count; ++i) {
610 MonoMethod *m = klass->methods [i];
612 if (!((fqname && !strcmp (m->name, fqname)) ||
613 (qname && !strcmp (m->name, qname)) ||
614 (name && !strcmp (m->name, name))))
617 if (sig->call_convention == MONO_CALL_VARARG) {
618 if (mono_metadata_signature_vararg_match (sig, mono_method_signature (m)))
621 if (mono_metadata_signature_equal (sig, mono_method_signature (m)))
626 if (i < klass->method.count)
627 return mono_class_get_method_by_index (from_class, i);
632 find_method (MonoClass *in_class, MonoClass *ic, const char* name, MonoMethodSignature *sig, MonoClass *from_class)
635 char *qname, *fqname, *class_name;
636 gboolean is_interface;
637 MonoMethod *result = NULL;
639 is_interface = MONO_CLASS_IS_INTERFACE (in_class);
642 class_name = mono_type_get_name_full (&ic->byval_arg, MONO_TYPE_NAME_FORMAT_IL);
644 qname = g_strconcat (class_name, ".", name, NULL);
645 if (ic->name_space && ic->name_space [0])
646 fqname = g_strconcat (ic->name_space, ".", class_name, ".", name, NULL);
650 class_name = qname = fqname = NULL;
653 g_assert (from_class);
654 result = find_method_in_class (in_class, name, qname, fqname, sig, from_class);
658 if (name [0] == '.' && (!strcmp (name, ".ctor") || !strcmp (name, ".cctor")))
661 g_assert (from_class->interface_offsets_count == in_class->interface_offsets_count);
662 for (i = 0; i < in_class->interface_offsets_count; i++) {
663 MonoClass *in_ic = in_class->interfaces_packed [i];
664 MonoClass *from_ic = from_class->interfaces_packed [i];
665 char *ic_qname, *ic_fqname, *ic_class_name;
667 ic_class_name = mono_type_get_name_full (&in_ic->byval_arg, MONO_TYPE_NAME_FORMAT_IL);
668 ic_qname = g_strconcat (ic_class_name, ".", name, NULL);
669 if (in_ic->name_space && in_ic->name_space [0])
670 ic_fqname = g_strconcat (in_ic->name_space, ".", ic_class_name, ".", name, NULL);
674 result = find_method_in_class (in_ic, ic ? name : NULL, ic_qname, ic_fqname, sig, from_ic);
675 g_free (ic_class_name);
682 in_class = in_class->parent;
683 from_class = from_class->parent;
685 g_assert (!in_class == !from_class);
688 result = find_method_in_class (mono_defaults.object_class, name, qname, fqname, sig, mono_defaults.object_class);
697 static MonoMethodSignature*
698 inflate_generic_signature (MonoImage *image, MonoMethodSignature *sig, MonoGenericContext *context)
700 MonoMethodSignature *res;
707 res = g_malloc0 (MONO_SIZEOF_METHOD_SIGNATURE + ((gint32)sig->param_count) * sizeof (MonoType*));
708 res->param_count = sig->param_count;
709 res->sentinelpos = -1;
710 res->ret = mono_class_inflate_generic_type (sig->ret, context);
711 is_open = mono_class_is_open_constructed_type (res->ret);
712 for (i = 0; i < sig->param_count; ++i) {
713 res->params [i] = mono_class_inflate_generic_type (sig->params [i], context);
715 is_open = mono_class_is_open_constructed_type (res->params [i]);
717 res->hasthis = sig->hasthis;
718 res->explicit_this = sig->explicit_this;
719 res->call_convention = sig->call_convention;
720 res->pinvoke = sig->pinvoke;
721 res->generic_param_count = sig->generic_param_count;
722 res->sentinelpos = sig->sentinelpos;
723 res->has_type_parameters = is_open;
724 res->is_inflated = 1;
728 static MonoMethodHeader*
729 inflate_generic_header (MonoMethodHeader *header, MonoGenericContext *context)
731 MonoMethodHeader *res;
733 res = g_malloc0 (MONO_SIZEOF_METHOD_HEADER + sizeof (gpointer) * header->num_locals);
734 res->code = header->code;
735 res->code_size = header->code_size;
736 res->max_stack = header->max_stack;
737 res->num_clauses = header->num_clauses;
738 res->init_locals = header->init_locals;
739 res->num_locals = header->num_locals;
740 res->clauses = header->clauses;
741 for (i = 0; i < header->num_locals; ++i)
742 res->locals [i] = mono_class_inflate_generic_type (header->locals [i], context);
743 if (res->num_clauses) {
744 res->clauses = g_memdup (header->clauses, sizeof (MonoExceptionClause) * res->num_clauses);
745 for (i = 0; i < header->num_clauses; ++i) {
746 MonoExceptionClause *clause = &res->clauses [i];
747 if (clause->flags != MONO_EXCEPTION_CLAUSE_NONE)
749 clause->data.catch_class = mono_class_inflate_generic_class (clause->data.catch_class, context);
756 * token is the method_ref or method_def token used in a call IL instruction.
759 mono_method_get_signature_full (MonoMethod *method, MonoImage *image, guint32 token, MonoGenericContext *context)
761 int table = mono_metadata_token_table (token);
762 int idx = mono_metadata_token_index (token);
764 guint32 cols [MONO_MEMBERREF_SIZE];
765 MonoMethodSignature *sig;
768 /* !table is for wrappers: we should really assign their own token to them */
769 if (!table || table == MONO_TABLE_METHOD)
770 return mono_method_signature (method);
772 if (table == MONO_TABLE_METHODSPEC) {
773 g_assert (!(method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) &&
774 mono_method_signature (method));
775 g_assert (method->is_inflated);
777 return mono_method_signature (method);
780 if (method->klass->generic_class)
781 return mono_method_signature (method);
784 /* FIXME: This might be incorrect for vararg methods */
785 return mono_method_signature (method);
787 mono_metadata_decode_row (&image->tables [MONO_TABLE_MEMBERREF], idx-1, cols, MONO_MEMBERREF_SIZE);
788 sig_idx = cols [MONO_MEMBERREF_SIGNATURE];
790 sig = find_cached_memberref_sig (image, sig_idx);
792 if (!mono_verifier_verify_memberref_signature (image, sig_idx, NULL)) {
793 guint32 class = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
794 const char *fname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
796 mono_loader_set_error_bad_image (g_strdup_printf ("Bad method signature class token %08x field name %s token %08x", class, fname, token));
800 ptr = mono_metadata_blob_heap (image, sig_idx);
801 mono_metadata_decode_blob_size (ptr, &ptr);
802 sig = mono_metadata_parse_method_signature (image, 0, ptr, NULL);
804 sig = cache_memberref_sig (image, sig_idx, sig);
808 MonoMethodSignature *cached;
810 /* This signature is not owned by a MonoMethod, so need to cache */
811 sig = inflate_generic_signature (image, sig, context);
812 cached = mono_metadata_get_inflated_signature (sig, context);
814 mono_metadata_free_inflated_signature (sig);
816 inflated_signatures_size += mono_metadata_signature_size (cached);
824 mono_method_get_signature (MonoMethod *method, MonoImage *image, guint32 token)
826 return mono_method_get_signature_full (method, image, token, NULL);
829 /* this is only for the typespec array methods */
831 mono_method_search_in_array_class (MonoClass *klass, const char *name, MonoMethodSignature *sig)
835 mono_class_setup_methods (klass);
837 for (i = 0; i < klass->method.count; ++i) {
838 MonoMethod *method = klass->methods [i];
839 if (strcmp (method->name, name) == 0 && sig->param_count == method->signature->param_count)
846 method_from_memberref (MonoImage *image, guint32 idx, MonoGenericContext *typespec_context,
847 gboolean *used_context)
849 MonoClass *klass = NULL;
850 MonoMethod *method = NULL;
851 MonoTableInfo *tables = image->tables;
853 guint32 nindex, class, sig_idx;
855 MonoMethodSignature *sig;
858 mono_metadata_decode_row (&tables [MONO_TABLE_MEMBERREF], idx-1, cols, 3);
859 nindex = cols [MONO_MEMBERREF_CLASS] >> MONO_MEMBERREF_PARENT_BITS;
860 class = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
861 /*g_print ("methodref: 0x%x 0x%x %s\n", class, nindex,
862 mono_metadata_string_heap (m, cols [MONO_MEMBERREF_NAME]));*/
864 mname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
867 * Whether we actually used the `typespec_context' or not.
868 * This is used to tell our caller whether or not it's safe to insert the returned
869 * method into a cache.
872 *used_context = class == MONO_MEMBERREF_PARENT_TYPESPEC;
875 case MONO_MEMBERREF_PARENT_TYPEREF:
876 klass = mono_class_from_typeref (image, MONO_TOKEN_TYPE_REF | nindex);
878 char *name = mono_class_name_from_token (image, MONO_TOKEN_TYPE_REF | nindex);
879 g_warning ("Missing method %s in assembly %s, type %s", mname, image->name, name);
880 mono_loader_set_error_type_load (name, image->assembly_name);
885 case MONO_MEMBERREF_PARENT_TYPESPEC:
887 * Parse the TYPESPEC in the parent's context.
889 klass = mono_class_get_full (image, MONO_TOKEN_TYPE_SPEC | nindex, typespec_context);
891 char *name = mono_class_name_from_token (image, MONO_TOKEN_TYPE_SPEC | nindex);
892 g_warning ("Missing method %s in assembly %s, type %s", mname, image->name, name);
893 mono_loader_set_error_type_load (name, image->assembly_name);
898 case MONO_MEMBERREF_PARENT_TYPEDEF:
899 klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF | nindex);
901 char *name = mono_class_name_from_token (image, MONO_TOKEN_TYPE_DEF | nindex);
902 g_warning ("Missing method %s in assembly %s, type %s", mname, image->name, name);
903 mono_loader_set_error_type_load (name, image->assembly_name);
908 case MONO_MEMBERREF_PARENT_METHODDEF:
909 return mono_get_method (image, MONO_TOKEN_METHOD_DEF | nindex, NULL);
913 /* This message leaks */
914 char *message = g_strdup_printf ("Memberref parent unknown: class: %d, index %d", class, nindex);
915 mono_loader_set_error_method_load ("", message);
921 mono_class_init (klass);
923 sig_idx = cols [MONO_MEMBERREF_SIGNATURE];
925 if (!mono_verifier_verify_memberref_signature (image, sig_idx, NULL)) {
926 mono_loader_set_error_method_load (klass->name, mname);
930 ptr = mono_metadata_blob_heap (image, sig_idx);
931 mono_metadata_decode_blob_size (ptr, &ptr);
933 sig = find_cached_memberref_sig (image, sig_idx);
935 sig = mono_metadata_parse_method_signature (image, 0, ptr, NULL);
939 sig = cache_memberref_sig (image, sig_idx, sig);
943 case MONO_MEMBERREF_PARENT_TYPEREF:
944 case MONO_MEMBERREF_PARENT_TYPEDEF:
945 method = find_method (klass, NULL, mname, sig, klass);
948 case MONO_MEMBERREF_PARENT_TYPESPEC: {
951 type = &klass->byval_arg;
953 if (type->type != MONO_TYPE_ARRAY && type->type != MONO_TYPE_SZARRAY) {
954 MonoClass *in_class = klass->generic_class ? klass->generic_class->container_class : klass;
955 method = find_method (in_class, NULL, mname, sig, klass);
959 /* we're an array and we created these methods already in klass in mono_class_init () */
960 method = mono_method_search_in_array_class (klass, mname, sig);
964 g_error ("Memberref parent unknown: class: %d, index %d", class, nindex);
965 g_assert_not_reached ();
969 char *msig = mono_signature_get_desc (sig, FALSE);
970 char * class_name = mono_type_get_name (&klass->byval_arg);
971 GString *s = g_string_new (mname);
972 if (sig->generic_param_count)
973 g_string_append_printf (s, "<[%d]>", sig->generic_param_count);
974 g_string_append_printf (s, "(%s)", msig);
976 msig = g_string_free (s, FALSE);
979 "Missing method %s::%s in assembly %s, referenced in assembly %s",
980 class_name, msig, klass->image->name, image->name);
981 mono_loader_set_error_method_load (class_name, mname);
990 method_from_methodspec (MonoImage *image, MonoGenericContext *context, guint32 idx)
994 MonoTableInfo *tables = image->tables;
995 MonoGenericContext new_context;
996 MonoGenericInst *inst;
998 guint32 cols [MONO_METHODSPEC_SIZE];
999 guint32 token, nindex, param_count;
1001 mono_metadata_decode_row (&tables [MONO_TABLE_METHODSPEC], idx - 1, cols, MONO_METHODSPEC_SIZE);
1002 token = cols [MONO_METHODSPEC_METHOD];
1003 nindex = token >> MONO_METHODDEFORREF_BITS;
1005 if (!mono_verifier_verify_methodspec_signature (image, cols [MONO_METHODSPEC_SIGNATURE], NULL))
1008 ptr = mono_metadata_blob_heap (image, cols [MONO_METHODSPEC_SIGNATURE]);
1010 mono_metadata_decode_value (ptr, &ptr);
1012 param_count = mono_metadata_decode_value (ptr, &ptr);
1013 g_assert (param_count);
1015 inst = mono_metadata_parse_generic_inst (image, NULL, param_count, ptr, &ptr);
1016 if (context && inst->is_open)
1017 inst = mono_metadata_inflate_generic_inst (inst, context);
1019 if ((token & MONO_METHODDEFORREF_MASK) == MONO_METHODDEFORREF_METHODDEF)
1020 method = mono_get_method_full (image, MONO_TOKEN_METHOD_DEF | nindex, NULL, context);
1022 method = method_from_memberref (image, nindex, context, NULL);
1027 klass = method->klass;
1029 if (klass->generic_class) {
1030 g_assert (method->is_inflated);
1031 method = ((MonoMethodInflated *) method)->declaring;
1034 new_context.class_inst = klass->generic_class ? klass->generic_class->context.class_inst : NULL;
1035 new_context.method_inst = inst;
1037 return mono_class_inflate_generic_method_full (method, klass, &new_context);
1040 struct _MonoDllMap {
1048 static MonoDllMap *global_dll_map;
1051 mono_dllmap_lookup_list (MonoDllMap *dll_map, const char *dll, const char* func, const char **rdll, const char **rfunc) {
1059 mono_loader_lock ();
1062 * we use the first entry we find that matches, since entries from
1063 * the config file are prepended to the list and we document that the
1064 * later entries win.
1066 for (; dll_map; dll_map = dll_map->next) {
1067 if (dll_map->dll [0] == 'i' && dll_map->dll [1] == ':') {
1068 if (g_ascii_strcasecmp (dll_map->dll + 2, dll))
1070 } else if (strcmp (dll_map->dll, dll)) {
1073 if (!found && dll_map->target) {
1074 *rdll = dll_map->target;
1076 /* we don't quit here, because we could find a full
1077 * entry that matches also function and that has priority.
1080 if (dll_map->func && strcmp (dll_map->func, func) == 0) {
1081 *rfunc = dll_map->target_func;
1086 mono_loader_unlock ();
1091 mono_dllmap_lookup (MonoImage *assembly, const char *dll, const char* func, const char **rdll, const char **rfunc)
1094 if (assembly && assembly->dll_map) {
1095 res = mono_dllmap_lookup_list (assembly->dll_map, dll, func, rdll, rfunc);
1099 return mono_dllmap_lookup_list (global_dll_map, dll, func, rdll, rfunc);
1103 * mono_dllmap_insert:
1105 * LOCKING: Acquires the loader lock.
1107 * NOTE: This can be called before the runtime is initialized, for example from
1108 * mono_config_parse ().
1111 mono_dllmap_insert (MonoImage *assembly, const char *dll, const char *func, const char *tdll, const char *tfunc)
1115 mono_loader_init ();
1117 mono_loader_lock ();
1120 entry = g_malloc0 (sizeof (MonoDllMap));
1121 entry->dll = dll? g_strdup (dll): NULL;
1122 entry->target = tdll? g_strdup (tdll): NULL;
1123 entry->func = func? g_strdup (func): NULL;
1124 entry->target_func = tfunc? g_strdup (tfunc): NULL;
1125 entry->next = global_dll_map;
1126 global_dll_map = entry;
1128 entry = mono_image_alloc0 (assembly, sizeof (MonoDllMap));
1129 entry->dll = dll? mono_image_strdup (assembly, dll): NULL;
1130 entry->target = tdll? mono_image_strdup (assembly, tdll): NULL;
1131 entry->func = func? mono_image_strdup (assembly, func): NULL;
1132 entry->target_func = tfunc? mono_image_strdup (assembly, tfunc): NULL;
1133 entry->next = assembly->dll_map;
1134 assembly->dll_map = entry;
1137 mono_loader_unlock ();
1140 static GHashTable *global_module_map;
1143 cached_module_load (const char *name, int flags, char **err)
1146 mono_loader_lock ();
1147 if (!global_module_map)
1148 global_module_map = g_hash_table_new (g_str_hash, g_str_equal);
1149 res = g_hash_table_lookup (global_module_map, name);
1152 mono_loader_unlock ();
1155 res = mono_dl_open (name, flags, err);
1157 g_hash_table_insert (global_module_map, g_strdup (name), res);
1158 mono_loader_unlock ();
1163 mono_lookup_pinvoke_call (MonoMethod *method, const char **exc_class, const char **exc_arg)
1165 MonoImage *image = method->klass->image;
1166 MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *)method;
1167 MonoTableInfo *tables = image->tables;
1168 MonoTableInfo *im = &tables [MONO_TABLE_IMPLMAP];
1169 MonoTableInfo *mr = &tables [MONO_TABLE_MODULEREF];
1170 guint32 im_cols [MONO_IMPLMAP_SIZE];
1171 guint32 scope_token;
1172 const char *import = NULL;
1173 const char *orig_scope;
1174 const char *new_scope;
1176 char *full_name, *file_name;
1178 MonoDl *module = NULL;
1180 g_assert (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL);
1183 return piinfo->addr;
1185 if (method->klass->image->dynamic) {
1186 MonoReflectionMethodAux *method_aux =
1187 g_hash_table_lookup (
1188 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
1192 import = method_aux->dllentry;
1193 orig_scope = method_aux->dll;
1196 if (!piinfo->implmap_idx)
1199 mono_metadata_decode_row (im, piinfo->implmap_idx - 1, im_cols, MONO_IMPLMAP_SIZE);
1201 piinfo->piflags = im_cols [MONO_IMPLMAP_FLAGS];
1202 import = mono_metadata_string_heap (image, im_cols [MONO_IMPLMAP_NAME]);
1203 scope_token = mono_metadata_decode_row_col (mr, im_cols [MONO_IMPLMAP_SCOPE] - 1, MONO_MODULEREF_NAME);
1204 orig_scope = mono_metadata_string_heap (image, scope_token);
1207 mono_dllmap_lookup (image, orig_scope, import, &new_scope, &import);
1209 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1210 "DllImport attempting to load: '%s'.", new_scope);
1217 /* we allow a special name to dlopen from the running process namespace */
1218 if (strcmp (new_scope, "__Internal") == 0)
1219 module = mono_dl_open (NULL, MONO_DL_LAZY, &error_msg);
1222 * Try loading the module using a variety of names
1224 for (i = 0; i < 4; ++i) {
1227 /* Try the original name */
1228 file_name = g_strdup (new_scope);
1231 /* Try trimming the .dll extension */
1232 if (strstr (new_scope, ".dll") == (new_scope + strlen (new_scope) - 4)) {
1233 file_name = g_strdup (new_scope);
1234 file_name [strlen (new_scope) - 4] = '\0';
1240 if (strstr (new_scope, "lib") != new_scope) {
1241 file_name = g_strdup_printf ("lib%s", new_scope);
1247 #ifndef PLATFORM_WIN32
1248 if (!g_ascii_strcasecmp ("user32.dll", new_scope) ||
1249 !g_ascii_strcasecmp ("kernel32.dll", new_scope) ||
1250 !g_ascii_strcasecmp ("user32", new_scope) ||
1251 !g_ascii_strcasecmp ("kernel", new_scope)) {
1252 file_name = g_strdup ("libMonoSupportW.so");
1256 #ifndef PLATFORM_WIN32
1263 while ((full_name = mono_dl_build_path (NULL, file_name, &iter))) {
1264 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1265 "DllImport loading location: '%s'.", full_name);
1266 module = cached_module_load (full_name, MONO_DL_LAZY, &error_msg);
1268 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1269 "DllImport error loading library: '%s'.",
1281 while ((full_name = mono_dl_build_path (".", file_name, &iter))) {
1282 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1283 "DllImport loading library: '%s'.", full_name);
1284 module = cached_module_load (full_name, MONO_DL_LAZY, &error_msg);
1286 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1287 "DllImport error loading library '%s'.",
1298 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1299 "DllImport loading: '%s'.", file_name);
1300 module = cached_module_load (file_name, MONO_DL_LAZY, &error_msg);
1302 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1303 "DllImport error loading library '%s'.",
1315 mono_trace (G_LOG_LEVEL_WARNING, MONO_TRACE_DLLIMPORT,
1316 "DllImport unable to load library '%s'.",
1321 *exc_class = "DllNotFoundException";
1322 *exc_arg = new_scope;
1327 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1328 "Searching for '%s'.", import);
1330 if (piinfo->piflags & PINVOKE_ATTRIBUTE_NO_MANGLE) {
1331 error_msg = mono_dl_symbol (module, import, &piinfo->addr);
1333 char *mangled_name = NULL, *mangled_name2 = NULL;
1336 int mangle_param_count;
1337 #ifdef PLATFORM_WIN32
1342 * Search using a variety of mangled names
1344 for (mangle_charset = 0; mangle_charset <= 1; mangle_charset ++) {
1345 for (mangle_stdcall = 0; mangle_stdcall <= 1; mangle_stdcall ++) {
1346 gboolean need_param_count = FALSE;
1347 #ifdef PLATFORM_WIN32
1348 if (mangle_stdcall > 0)
1349 need_param_count = TRUE;
1351 for (mangle_param_count = 0; mangle_param_count <= (need_param_count ? 256 : 0); mangle_param_count += 4) {
1356 mangled_name = (char*)import;
1357 switch (piinfo->piflags & PINVOKE_ATTRIBUTE_CHAR_SET_MASK) {
1358 case PINVOKE_ATTRIBUTE_CHAR_SET_UNICODE:
1359 /* Try the mangled name first */
1360 if (mangle_charset == 0)
1361 mangled_name = g_strconcat (import, "W", NULL);
1363 case PINVOKE_ATTRIBUTE_CHAR_SET_AUTO:
1364 #ifdef PLATFORM_WIN32
1365 if (mangle_charset == 0)
1366 mangled_name = g_strconcat (import, "W", NULL);
1368 /* Try the mangled name last */
1369 if (mangle_charset == 1)
1370 mangled_name = g_strconcat (import, "A", NULL);
1373 case PINVOKE_ATTRIBUTE_CHAR_SET_ANSI:
1375 /* Try the mangled name last */
1376 if (mangle_charset == 1)
1377 mangled_name = g_strconcat (import, "A", NULL);
1381 #ifdef PLATFORM_WIN32
1382 if (mangle_param_count == 0)
1383 param_count = mono_method_signature (method)->param_count * sizeof (gpointer);
1385 /* Try brute force, since it would be very hard to compute the stack usage correctly */
1386 param_count = mangle_param_count;
1388 /* Try the stdcall mangled name */
1390 * gcc under windows creates mangled names without the underscore, but MS.NET
1391 * doesn't support it, so we doesn't support it either.
1393 if (mangle_stdcall == 1)
1394 mangled_name2 = g_strdup_printf ("_%s@%d", mangled_name, param_count);
1396 mangled_name2 = mangled_name;
1398 mangled_name2 = mangled_name;
1401 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1402 "Probing '%s'.", mangled_name2);
1404 error_msg = mono_dl_symbol (module, mangled_name2, &piinfo->addr);
1407 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1408 "Found as '%s'.", mangled_name2);
1410 if (mangled_name != mangled_name2)
1411 g_free (mangled_name2);
1412 if (mangled_name != import)
1413 g_free (mangled_name);
1419 if (!piinfo->addr) {
1422 *exc_class = "EntryPointNotFoundException";
1427 return piinfo->addr;
1431 * LOCKING: assumes the loader lock to be taken.
1434 mono_get_method_from_token (MonoImage *image, guint32 token, MonoClass *klass,
1435 MonoGenericContext *context, gboolean *used_context)
1438 int table = mono_metadata_token_table (token);
1439 int idx = mono_metadata_token_index (token);
1440 MonoTableInfo *tables = image->tables;
1441 MonoGenericContainer *generic_container = NULL, *container = NULL;
1442 const char *sig = NULL;
1444 guint32 cols [MONO_TYPEDEF_SIZE];
1446 if (image->dynamic) {
1447 MonoClass *handle_class;
1449 result = mono_lookup_dynamic_token_class (image, token, TRUE, &handle_class, context);
1450 // This checks the memberref type as well
1451 if (result && handle_class != mono_defaults.methodhandle_class) {
1452 mono_loader_set_error_bad_image (g_strdup ("Bad method token."));
1458 if (table != MONO_TABLE_METHOD) {
1459 if (table == MONO_TABLE_METHODSPEC) {
1460 if (used_context) *used_context = TRUE;
1461 return method_from_methodspec (image, context, idx);
1463 if (table != MONO_TABLE_MEMBERREF)
1464 g_print("got wrong token: 0x%08x\n", token);
1465 g_assert (table == MONO_TABLE_MEMBERREF);
1466 return method_from_memberref (image, idx, context, used_context);
1469 if (used_context) *used_context = FALSE;
1471 if (idx > image->tables [MONO_TABLE_METHOD].rows) {
1472 mono_loader_set_error_bad_image (g_strdup ("Bad method token."));
1476 mono_metadata_decode_row (&image->tables [MONO_TABLE_METHOD], idx - 1, cols, 6);
1478 if ((cols [2] & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
1479 (cols [1] & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL))
1480 result = (MonoMethod *)mono_image_alloc0 (image, sizeof (MonoMethodPInvoke));
1482 result = (MonoMethod *)mono_image_alloc0 (image, sizeof (MonoMethodNormal));
1484 mono_stats.method_count ++;
1487 guint32 type = mono_metadata_typedef_from_method (image, token);
1488 klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF | type);
1494 result->klass = klass;
1495 result->flags = cols [2];
1496 result->iflags = cols [1];
1497 result->token = token;
1498 result->name = mono_metadata_string_heap (image, cols [3]);
1500 if (!sig) /* already taken from the methodref */
1501 sig = mono_metadata_blob_heap (image, cols [4]);
1502 size = mono_metadata_decode_blob_size (sig, &sig);
1504 container = klass->generic_container;
1507 * load_generic_params does a binary search so only call it if the method
1511 generic_container = mono_metadata_load_generic_params (image, token, container);
1512 if (generic_container) {
1513 result->is_generic = TRUE;
1514 generic_container->owner.method = result;
1516 mono_metadata_load_generic_param_constraints (image, token, generic_container);
1518 container = generic_container;
1521 if (cols [1] & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) {
1522 if (result->klass == mono_defaults.string_class && !strcmp (result->name, ".ctor"))
1523 result->string_ctor = 1;
1524 } else if (cols [2] & METHOD_ATTRIBUTE_PINVOKE_IMPL) {
1525 MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *)result;
1527 #ifdef PLATFORM_WIN32
1528 /* IJW is P/Invoke with a predefined function pointer. */
1529 if (image->is_module_handle && (cols [1] & METHOD_IMPL_ATTRIBUTE_NATIVE)) {
1530 piinfo->addr = mono_image_rva_map (image, cols [0]);
1531 g_assert (piinfo->addr);
1534 piinfo->implmap_idx = mono_metadata_implmap_from_method (image, idx - 1);
1535 /* Native methods can have no map. */
1536 if (piinfo->implmap_idx)
1537 piinfo->piflags = mono_metadata_decode_row_col (&tables [MONO_TABLE_IMPLMAP], piinfo->implmap_idx - 1, MONO_IMPLMAP_FLAGS);
1540 if (generic_container)
1541 mono_method_set_generic_container (result, generic_container);
1547 mono_get_method (MonoImage *image, guint32 token, MonoClass *klass)
1549 return mono_get_method_full (image, token, klass, NULL);
1553 get_method_token (gpointer value)
1555 MonoMethod *m = (MonoMethod*)value;
1557 return GUINT_TO_POINTER (m->token);
1561 mono_get_method_full (MonoImage *image, guint32 token, MonoClass *klass,
1562 MonoGenericContext *context)
1565 gboolean used_context = FALSE;
1567 /* We do everything inside the lock to prevent creation races */
1569 mono_image_lock (image);
1571 if (mono_metadata_token_table (token) == MONO_TABLE_METHOD) {
1572 if (!image->method_cache)
1573 image->method_cache = mono_value_hash_table_new (NULL, NULL, get_method_token);
1574 result = mono_value_hash_table_lookup (image->method_cache, GINT_TO_POINTER (token));
1576 if (!image->methodref_cache)
1577 image->methodref_cache = g_hash_table_new (NULL, NULL);
1578 result = g_hash_table_lookup (image->methodref_cache, GINT_TO_POINTER (token));
1580 mono_image_unlock (image);
1585 result = mono_get_method_from_token (image, token, klass, context, &used_context);
1589 mono_image_lock (image);
1590 if (!used_context && !result->is_inflated) {
1591 MonoMethod *result2;
1592 if (mono_metadata_token_table (token) == MONO_TABLE_METHOD)
1593 result2 = mono_value_hash_table_lookup (image->method_cache, GINT_TO_POINTER (token));
1595 result2 = g_hash_table_lookup (image->methodref_cache, GINT_TO_POINTER (token));
1598 mono_image_unlock (image);
1602 if (mono_metadata_token_table (token) == MONO_TABLE_METHOD)
1603 mono_value_hash_table_insert (image->method_cache, GINT_TO_POINTER (token), result);
1605 g_hash_table_insert (image->methodref_cache, GINT_TO_POINTER (token), result);
1608 mono_image_unlock (image);
1614 * mono_get_method_constrained:
1616 * This is used when JITing the `constrained.' opcode.
1618 * This returns two values: the contrained method, which has been inflated
1619 * as the function return value; And the original CIL-stream method as
1620 * declared in cil_method. The later is used for verification.
1623 mono_get_method_constrained (MonoImage *image, guint32 token, MonoClass *constrained_class,
1624 MonoGenericContext *context, MonoMethod **cil_method)
1626 MonoMethod *method, *result;
1627 MonoClass *ic = NULL;
1628 MonoGenericContext *method_context = NULL;
1629 MonoMethodSignature *sig, *original_sig;
1631 mono_loader_lock ();
1633 *cil_method = mono_get_method_from_token (image, token, NULL, context, NULL);
1635 mono_loader_unlock ();
1639 mono_class_init (constrained_class);
1640 method = *cil_method;
1641 original_sig = sig = mono_method_signature (method);
1643 if (method->is_inflated && sig->generic_param_count) {
1644 MonoMethodInflated *imethod = (MonoMethodInflated *) method;
1645 sig = mono_method_signature (imethod->declaring);
1646 method_context = mono_method_get_context (method);
1650 * We must inflate the signature with the class instantiation to work on
1651 * cases where a class inherit from a generic type and the override replaces
1652 * and type argument which a concrete type. See #325283.
1654 if (method_context->class_inst) {
1655 MonoGenericContext ctx;
1656 ctx.method_inst = NULL;
1657 ctx.class_inst = method_context->class_inst;
1659 sig = inflate_generic_signature (method->klass->image, sig, &ctx);
1663 if ((constrained_class != method->klass) && (MONO_CLASS_IS_INTERFACE (method->klass)))
1666 result = find_method (constrained_class, ic, method->name, sig, constrained_class);
1667 if (sig != original_sig)
1668 mono_metadata_free_inflated_signature (sig);
1671 g_warning ("Missing method %s.%s.%s in assembly %s token %x", method->klass->name_space,
1672 method->klass->name, method->name, image->name, token);
1673 mono_loader_unlock ();
1678 result = mono_class_inflate_generic_method (result, method_context);
1680 mono_loader_unlock ();
1685 mono_free_method (MonoMethod *method)
1687 if (mono_profiler_get_events () & MONO_PROFILE_METHOD_EVENTS)
1688 mono_profiler_method_free (method);
1690 /* FIXME: This hack will go away when the profiler will support freeing methods */
1691 if (mono_profiler_get_events () != MONO_PROFILE_NONE)
1694 if (method->signature) {
1696 * FIXME: This causes crashes because the types inside signatures and
1697 * locals are shared.
1699 /* mono_metadata_free_method_signature (method->signature); */
1700 /* g_free (method->signature); */
1703 if (method->dynamic) {
1704 MonoMethodWrapper *mw = (MonoMethodWrapper*)method;
1707 mono_marshal_free_dynamic_wrappers (method);
1709 mono_image_property_remove (method->klass->image, method);
1711 g_free ((char*)method->name);
1712 if (mw->method.header) {
1713 g_free ((char*)mw->method.header->code);
1714 for (i = 0; i < mw->method.header->num_locals; ++i)
1715 g_free (mw->method.header->locals [i]);
1716 g_free (mw->method.header->clauses);
1717 g_free (mw->method.header);
1719 g_free (mw->method_data);
1720 g_free (method->signature);
1726 mono_method_get_param_names (MonoMethod *method, const char **names)
1730 MonoTableInfo *methodt;
1731 MonoTableInfo *paramt;
1734 if (method->is_inflated)
1735 method = ((MonoMethodInflated *) method)->declaring;
1737 if (!mono_method_signature (method)->param_count)
1739 for (i = 0; i < mono_method_signature (method)->param_count; ++i)
1742 klass = method->klass;
1746 mono_class_init (klass);
1748 if (klass->image->dynamic) {
1749 MonoReflectionMethodAux *method_aux =
1750 g_hash_table_lookup (
1751 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
1752 if (method_aux && method_aux->param_names) {
1753 for (i = 0; i < mono_method_signature (method)->param_count; ++i)
1754 if (method_aux->param_names [i + 1])
1755 names [i] = method_aux->param_names [i + 1];
1760 methodt = &klass->image->tables [MONO_TABLE_METHOD];
1761 paramt = &klass->image->tables [MONO_TABLE_PARAM];
1762 idx = mono_method_get_index (method);
1764 guint32 cols [MONO_PARAM_SIZE];
1767 param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
1769 if (idx < methodt->rows)
1770 lastp = mono_metadata_decode_row_col (methodt, idx, MONO_METHOD_PARAMLIST);
1772 lastp = paramt->rows + 1;
1773 for (i = param_index; i < lastp; ++i) {
1774 mono_metadata_decode_row (paramt, i -1, cols, MONO_PARAM_SIZE);
1775 if (cols [MONO_PARAM_SEQUENCE]) /* skip return param spec */
1776 names [cols [MONO_PARAM_SEQUENCE] - 1] = mono_metadata_string_heap (klass->image, cols [MONO_PARAM_NAME]);
1783 mono_method_get_param_token (MonoMethod *method, int index)
1785 MonoClass *klass = method->klass;
1786 MonoTableInfo *methodt;
1789 mono_class_init (klass);
1791 if (klass->image->dynamic) {
1792 g_assert_not_reached ();
1795 methodt = &klass->image->tables [MONO_TABLE_METHOD];
1796 idx = mono_method_get_index (method);
1798 guint param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
1802 return mono_metadata_make_token (MONO_TABLE_PARAM, 0);
1804 return mono_metadata_make_token (MONO_TABLE_PARAM, param_index + index);
1811 mono_method_get_marshal_info (MonoMethod *method, MonoMarshalSpec **mspecs)
1814 MonoClass *klass = method->klass;
1815 MonoTableInfo *methodt;
1816 MonoTableInfo *paramt;
1819 for (i = 0; i < mono_method_signature (method)->param_count + 1; ++i)
1822 if (method->klass->image->dynamic) {
1823 MonoReflectionMethodAux *method_aux =
1824 g_hash_table_lookup (
1825 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
1826 if (method_aux && method_aux->param_marshall) {
1827 MonoMarshalSpec **dyn_specs = method_aux->param_marshall;
1828 for (i = 0; i < mono_method_signature (method)->param_count + 1; ++i)
1829 if (dyn_specs [i]) {
1830 mspecs [i] = g_new0 (MonoMarshalSpec, 1);
1831 memcpy (mspecs [i], dyn_specs [i], sizeof (MonoMarshalSpec));
1837 mono_class_init (klass);
1839 methodt = &klass->image->tables [MONO_TABLE_METHOD];
1840 paramt = &klass->image->tables [MONO_TABLE_PARAM];
1841 idx = mono_method_get_index (method);
1843 guint32 cols [MONO_PARAM_SIZE];
1844 guint param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
1846 if (idx < methodt->rows)
1847 lastp = mono_metadata_decode_row_col (methodt, idx, MONO_METHOD_PARAMLIST);
1849 lastp = paramt->rows + 1;
1851 for (i = param_index; i < lastp; ++i) {
1852 mono_metadata_decode_row (paramt, i -1, cols, MONO_PARAM_SIZE);
1854 if (cols [MONO_PARAM_FLAGS] & PARAM_ATTRIBUTE_HAS_FIELD_MARSHAL) {
1856 tp = mono_metadata_get_marshal_info (klass->image, i - 1, FALSE);
1858 mspecs [cols [MONO_PARAM_SEQUENCE]]= mono_metadata_parse_marshal_spec (klass->image, tp);
1867 mono_method_has_marshal_info (MonoMethod *method)
1870 MonoClass *klass = method->klass;
1871 MonoTableInfo *methodt;
1872 MonoTableInfo *paramt;
1875 if (method->klass->image->dynamic) {
1876 MonoReflectionMethodAux *method_aux =
1877 g_hash_table_lookup (
1878 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
1879 MonoMarshalSpec **dyn_specs = method_aux->param_marshall;
1881 for (i = 0; i < mono_method_signature (method)->param_count + 1; ++i)
1888 mono_class_init (klass);
1890 methodt = &klass->image->tables [MONO_TABLE_METHOD];
1891 paramt = &klass->image->tables [MONO_TABLE_PARAM];
1892 idx = mono_method_get_index (method);
1894 guint32 cols [MONO_PARAM_SIZE];
1895 guint param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
1897 if (idx + 1 < methodt->rows)
1898 lastp = mono_metadata_decode_row_col (methodt, idx, MONO_METHOD_PARAMLIST);
1900 lastp = paramt->rows + 1;
1902 for (i = param_index; i < lastp; ++i) {
1903 mono_metadata_decode_row (paramt, i -1, cols, MONO_PARAM_SIZE);
1905 if (cols [MONO_PARAM_FLAGS] & PARAM_ATTRIBUTE_HAS_FIELD_MARSHAL)
1914 mono_method_get_wrapper_data (MonoMethod *method, guint32 id)
1917 g_assert (method != NULL);
1918 g_assert (method->wrapper_type != MONO_WRAPPER_NONE);
1920 if (method->is_inflated)
1921 method = ((MonoMethodInflated *) method)->declaring;
1922 data = ((MonoMethodWrapper *)method)->method_data;
1923 g_assert (data != NULL);
1924 g_assert (id <= GPOINTER_TO_UINT (*data));
1929 default_stack_walk (MonoStackWalk func, gboolean do_il_offset, gpointer user_data) {
1930 g_error ("stack walk not installed");
1933 static MonoStackWalkImpl stack_walk = default_stack_walk;
1936 mono_stack_walk (MonoStackWalk func, gpointer user_data)
1938 stack_walk (func, TRUE, user_data);
1942 mono_stack_walk_no_il (MonoStackWalk func, gpointer user_data)
1944 stack_walk (func, FALSE, user_data);
1948 mono_install_stack_walk (MonoStackWalkImpl func)
1954 last_managed (MonoMethod *m, gint no, gint ilo, gboolean managed, gpointer data)
1956 MonoMethod **dest = data;
1958 /*g_print ("In %s::%s [%d] [%d]\n", m->klass->name, m->name, no, ilo);*/
1964 mono_method_get_last_managed (void)
1966 MonoMethod *m = NULL;
1967 stack_walk (last_managed, FALSE, &m);
1974 * See docs/thread-safety.txt for the locking strategy.
1977 mono_loader_lock (void)
1979 mono_locks_acquire (&loader_mutex, LoaderLock);
1983 mono_loader_unlock (void)
1985 mono_locks_release (&loader_mutex, LoaderLock);
1989 * mono_method_signature:
1991 * Return the signature of the method M. On failure, returns NULL.
1993 MonoMethodSignature*
1994 mono_method_signature (MonoMethod *m)
2000 gboolean can_cache_signature;
2001 MonoGenericContainer *container;
2002 MonoMethodSignature *signature = NULL;
2006 /* We need memory barriers below because of the double-checked locking pattern */
2009 return m->signature;
2011 mono_loader_lock ();
2014 mono_loader_unlock ();
2015 return m->signature;
2018 if (m->is_inflated) {
2019 MonoMethodInflated *imethod = (MonoMethodInflated *) m;
2020 /* the lock is recursive */
2021 signature = mono_method_signature (imethod->declaring);
2022 signature = inflate_generic_signature (imethod->declaring->klass->image, signature, mono_method_get_context (m));
2024 inflated_signatures_size += mono_metadata_signature_size (signature);
2026 mono_memory_barrier ();
2027 m->signature = signature;
2028 mono_loader_unlock ();
2029 return m->signature;
2032 g_assert (mono_metadata_token_table (m->token) == MONO_TABLE_METHOD);
2033 idx = mono_metadata_token_index (m->token);
2034 img = m->klass->image;
2036 sig = mono_metadata_blob_heap (img, sig_offset = mono_metadata_decode_row_col (&img->tables [MONO_TABLE_METHOD], idx - 1, MONO_METHOD_SIGNATURE));
2038 g_assert (!m->klass->generic_class);
2039 container = mono_method_get_generic_container (m);
2041 container = m->klass->generic_container;
2043 /* Generic signatures depend on the container so they cannot be cached */
2044 /* icall/pinvoke signatures cannot be cached cause we modify them below */
2045 can_cache_signature = !(m->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && !(m->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) && !container;
2047 /* If the method has parameter attributes, that can modify the signature */
2048 pattrs = mono_metadata_get_param_attrs (img, idx);
2050 can_cache_signature = FALSE;
2054 if (can_cache_signature)
2055 signature = g_hash_table_lookup (img->method_signatures, sig);
2058 const char *sig_body;
2059 /*TODO we should cache the failure result somewhere*/
2060 if (!mono_verifier_verify_method_signature (img, sig_offset, NULL)) {
2061 mono_loader_unlock ();
2065 size = mono_metadata_decode_blob_size (sig, &sig_body);
2067 signature = mono_metadata_parse_method_signature_full (img, container, idx, sig_body, NULL);
2069 mono_loader_unlock ();
2073 if (can_cache_signature)
2074 g_hash_table_insert (img->method_signatures, (gpointer)sig, signature);
2077 /* Verify metadata consistency */
2078 if (signature->generic_param_count) {
2079 if (!container || !container->is_method)
2080 g_error ("Signature claims method has generic parameters, but generic_params table says it doesn't");
2081 if (container->type_argc != signature->generic_param_count)
2082 g_error ("Inconsistent generic parameter count. Signature says %d, generic_params table says %d",
2083 signature->generic_param_count, container->type_argc);
2084 } else if (container && container->is_method && container->type_argc)
2085 g_error ("generic_params table claims method has generic parameters, but signature says it doesn't");
2087 if (m->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL)
2088 signature->pinvoke = 1;
2089 else if (m->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) {
2090 MonoCallConvention conv = 0;
2091 MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *)m;
2092 signature->pinvoke = 1;
2094 switch (piinfo->piflags & PINVOKE_ATTRIBUTE_CALL_CONV_MASK) {
2095 case 0: /* no call conv, so using default */
2096 case PINVOKE_ATTRIBUTE_CALL_CONV_WINAPI:
2097 conv = MONO_CALL_DEFAULT;
2099 case PINVOKE_ATTRIBUTE_CALL_CONV_CDECL:
2102 case PINVOKE_ATTRIBUTE_CALL_CONV_STDCALL:
2103 conv = MONO_CALL_STDCALL;
2105 case PINVOKE_ATTRIBUTE_CALL_CONV_THISCALL:
2106 conv = MONO_CALL_THISCALL;
2108 case PINVOKE_ATTRIBUTE_CALL_CONV_FASTCALL:
2109 conv = MONO_CALL_FASTCALL;
2111 case PINVOKE_ATTRIBUTE_CALL_CONV_GENERIC:
2112 case PINVOKE_ATTRIBUTE_CALL_CONV_GENERICINST:
2114 g_warning ("unsupported calling convention : 0x%04x", piinfo->piflags);
2115 g_assert_not_reached ();
2117 signature->call_convention = conv;
2120 mono_memory_barrier ();
2121 m->signature = signature;
2123 mono_loader_unlock ();
2124 return m->signature;
2128 mono_method_get_name (MonoMethod *method)
2130 return method->name;
2134 mono_method_get_class (MonoMethod *method)
2136 return method->klass;
2140 mono_method_get_token (MonoMethod *method)
2142 return method->token;
2146 mono_method_get_header (MonoMethod *method)
2152 MonoMethodNormal* mn = (MonoMethodNormal*) method;
2153 MonoMethodHeader *header;
2155 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))
2159 if (G_LIKELY (mn->header))
2165 if (method->is_inflated) {
2166 MonoMethodInflated *imethod = (MonoMethodInflated *) method;
2167 MonoMethodHeader *header;
2169 header = mono_method_get_header (imethod->declaring);
2171 mono_loader_lock ();
2174 mono_loader_unlock ();
2178 mn->header = inflate_generic_header (header, mono_method_get_context (method));
2179 mono_loader_unlock ();
2184 * Do most of the work outside the loader lock, to avoid assembly loader hook
2187 g_assert (mono_metadata_token_table (method->token) == MONO_TABLE_METHOD);
2188 idx = mono_metadata_token_index (method->token);
2189 img = method->klass->image;
2190 rva = mono_metadata_decode_row_col (&img->tables [MONO_TABLE_METHOD], idx - 1, MONO_METHOD_RVA);
2191 loc = mono_image_rva_map (img, rva);
2195 if (!mono_verifier_verify_method_header (img, rva, NULL))
2198 header = mono_metadata_parse_mh_full (img, mono_method_get_generic_container (method), loc);
2200 mono_loader_lock ();
2203 /* header is allocated from the image mempool, no need to free it */
2204 mono_loader_unlock ();
2208 mono_memory_barrier ();
2210 mn->header = header;
2212 mono_loader_unlock ();
2217 mono_method_get_flags (MonoMethod *method, guint32 *iflags)
2220 *iflags = method->iflags;
2221 return method->flags;
2225 * Find the method index in the metadata methodDef table.
2228 mono_method_get_index (MonoMethod *method) {
2229 MonoClass *klass = method->klass;
2233 return mono_metadata_token_index (method->token);
2235 mono_class_setup_methods (klass);
2236 for (i = 0; i < klass->method.count; ++i) {
2237 if (method == klass->methods [i]) {
2238 if (klass->image->uncompressed_metadata)
2239 return mono_metadata_translate_token_index (klass->image, MONO_TABLE_METHOD, klass->method.first + i + 1);
2241 return klass->method.first + i + 1;