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 && *error->klass->name_space) ? error->klass->name_space : "");
310 char *cname = g_strdup (error->klass ? 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;
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 g_warning ("Bad field signature class token %08x field name %s token %08x", class, fname, token);
434 mono_loader_set_error_field_load (NULL, fname);
437 /* FIXME: This needs a cache, especially for generic instances, since
438 * mono_metadata_parse_type () allocates everything from a mempool.
440 sig_type = find_cached_memberref_sig (image, cols [MONO_MEMBERREF_SIGNATURE]);
442 sig_type = mono_metadata_parse_type (image, MONO_PARSE_TYPE, 0, ptr, &ptr);
443 if (sig_type == NULL) {
444 mono_loader_set_error_field_load (NULL, fname);
447 sig_type = cache_memberref_sig (image, cols [MONO_MEMBERREF_SIGNATURE], sig_type);
451 case MONO_MEMBERREF_PARENT_TYPEDEF:
452 klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF | nindex);
454 char *name = mono_class_name_from_token (image, MONO_TOKEN_TYPE_DEF | nindex);
455 g_warning ("Missing field %s in class %s (typedef index %d)", fname, name, nindex);
456 mono_loader_set_error_type_load (name, image->assembly_name);
460 mono_class_init (klass);
463 field = mono_class_get_field_from_name_full (klass, fname, sig_type);
465 case MONO_MEMBERREF_PARENT_TYPEREF:
466 klass = mono_class_from_typeref (image, MONO_TOKEN_TYPE_REF | nindex);
468 char *name = mono_class_name_from_token (image, MONO_TOKEN_TYPE_REF | nindex);
469 g_warning ("missing field %s in class %s (typeref index %d)", fname, name, nindex);
470 mono_loader_set_error_type_load (name, image->assembly_name);
474 mono_class_init (klass);
477 field = mono_class_get_field_from_name_full (klass, fname, sig_type);
479 case MONO_MEMBERREF_PARENT_TYPESPEC: {
480 klass = mono_class_get_full (image, MONO_TOKEN_TYPE_SPEC | nindex, context);
482 char *name = mono_class_name_from_token (image, MONO_TOKEN_TYPE_REF | nindex);
483 g_warning ("missing field %s in class %s (typeref index %d)", fname, name, nindex);
484 mono_loader_set_error_type_load (name, image->assembly_name);
488 mono_class_init (klass);
491 field = mono_class_get_field_from_name_full (klass, fname, sig_type);
495 g_warning ("field load from %x", class);
500 mono_loader_set_error_field_load (klass, fname);
506 mono_field_from_token (MonoImage *image, guint32 token, MonoClass **retklass,
507 MonoGenericContext *context)
511 MonoClassField *field;
513 if (image->dynamic) {
514 MonoClassField *result;
515 MonoClass *handle_class;
518 result = mono_lookup_dynamic_token_class (image, token, TRUE, &handle_class, context);
519 // This checks the memberref type as well
520 if (result && handle_class != mono_defaults.fieldhandle_class) {
521 mono_loader_set_error_bad_image (g_strdup ("Bad field token."));
524 *retklass = result->parent;
529 if ((field = g_hash_table_lookup (image->field_cache, GUINT_TO_POINTER (token)))) {
530 *retklass = field->parent;
531 mono_loader_unlock ();
534 mono_loader_unlock ();
536 if (mono_metadata_token_table (token) == MONO_TABLE_MEMBERREF)
537 field = field_from_memberref (image, token, retklass, context);
539 type = mono_metadata_typedef_from_field (image, mono_metadata_token_index (token));
542 k = mono_class_get (image, MONO_TOKEN_TYPE_DEF | type);
548 field = mono_class_get_field (k, token);
552 if (field && field->parent && !field->parent->generic_class && !field->parent->generic_container)
553 g_hash_table_insert (image->field_cache, GUINT_TO_POINTER (token), field);
554 mono_loader_unlock ();
559 mono_metadata_signature_vararg_match (MonoMethodSignature *sig1, MonoMethodSignature *sig2)
563 if (sig1->hasthis != sig2->hasthis ||
564 sig1->sentinelpos != sig2->sentinelpos)
567 for (i = 0; i < sig1->sentinelpos; i++) {
568 MonoType *p1 = sig1->params[i];
569 MonoType *p2 = sig2->params[i];
571 /*if (p1->attrs != p2->attrs)
574 if (!mono_metadata_type_equal (p1, p2))
578 if (!mono_metadata_type_equal (sig1->ret, sig2->ret))
584 find_method_in_class (MonoClass *klass, const char *name, const char *qname, const char *fqname,
585 MonoMethodSignature *sig, MonoClass *from_class)
589 /* Search directly in the metadata to avoid calling setup_methods () */
591 /* FIXME: !from_class->generic_class condition causes test failures. */
592 if (klass->type_token && !klass->image->dynamic && !klass->methods && !klass->rank && klass == from_class && !from_class->generic_class) {
593 for (i = 0; i < klass->method.count; ++i) {
594 guint32 cols [MONO_METHOD_SIZE];
598 mono_metadata_decode_table_row (klass->image, MONO_TABLE_METHOD, klass->method.first + i, cols, MONO_METHOD_SIZE);
600 m_name = mono_metadata_string_heap (klass->image, cols [MONO_METHOD_NAME]);
602 if (!((fqname && !strcmp (m_name, fqname)) ||
603 (qname && !strcmp (m_name, qname)) ||
604 (name && !strcmp (m_name, name))))
607 method = mono_get_method (klass->image, MONO_TOKEN_METHOD_DEF | (klass->method.first + i + 1), klass);
608 if (method && (sig->call_convention != MONO_CALL_VARARG) && mono_metadata_signature_equal (sig, mono_method_signature (method)))
613 mono_class_setup_methods (klass);
614 for (i = 0; i < klass->method.count; ++i) {
615 MonoMethod *m = klass->methods [i];
617 if (!((fqname && !strcmp (m->name, fqname)) ||
618 (qname && !strcmp (m->name, qname)) ||
619 (name && !strcmp (m->name, name))))
622 if (sig->call_convention == MONO_CALL_VARARG) {
623 if (mono_metadata_signature_vararg_match (sig, mono_method_signature (m)))
626 if (mono_metadata_signature_equal (sig, mono_method_signature (m)))
631 if (i < klass->method.count)
632 return mono_class_get_method_by_index (from_class, i);
637 find_method (MonoClass *in_class, MonoClass *ic, const char* name, MonoMethodSignature *sig, MonoClass *from_class)
640 char *qname, *fqname, *class_name;
641 gboolean is_interface;
642 MonoMethod *result = NULL;
644 is_interface = MONO_CLASS_IS_INTERFACE (in_class);
647 class_name = mono_type_get_name_full (&ic->byval_arg, MONO_TYPE_NAME_FORMAT_IL);
649 qname = g_strconcat (class_name, ".", name, NULL);
650 if (ic->name_space && ic->name_space [0])
651 fqname = g_strconcat (ic->name_space, ".", class_name, ".", name, NULL);
655 class_name = qname = fqname = NULL;
658 g_assert (from_class);
659 result = find_method_in_class (in_class, name, qname, fqname, sig, from_class);
663 if (name [0] == '.' && (!strcmp (name, ".ctor") || !strcmp (name, ".cctor")))
666 g_assert (from_class->interface_offsets_count == in_class->interface_offsets_count);
667 for (i = 0; i < in_class->interface_offsets_count; i++) {
668 MonoClass *in_ic = in_class->interfaces_packed [i];
669 MonoClass *from_ic = from_class->interfaces_packed [i];
670 char *ic_qname, *ic_fqname, *ic_class_name;
672 ic_class_name = mono_type_get_name_full (&in_ic->byval_arg, MONO_TYPE_NAME_FORMAT_IL);
673 ic_qname = g_strconcat (ic_class_name, ".", name, NULL);
674 if (in_ic->name_space && in_ic->name_space [0])
675 ic_fqname = g_strconcat (in_ic->name_space, ".", ic_class_name, ".", name, NULL);
679 result = find_method_in_class (in_ic, ic ? name : NULL, ic_qname, ic_fqname, sig, from_ic);
680 g_free (ic_class_name);
687 in_class = in_class->parent;
688 from_class = from_class->parent;
690 g_assert (!in_class == !from_class);
693 result = find_method_in_class (mono_defaults.object_class, name, qname, fqname, sig, mono_defaults.object_class);
702 static MonoMethodSignature*
703 inflate_generic_signature (MonoImage *image, MonoMethodSignature *sig, MonoGenericContext *context)
705 MonoMethodSignature *res;
712 res = g_malloc0 (MONO_SIZEOF_METHOD_SIGNATURE + ((gint32)sig->param_count) * sizeof (MonoType*));
713 res->param_count = sig->param_count;
714 res->sentinelpos = -1;
715 res->ret = mono_class_inflate_generic_type (sig->ret, context);
716 is_open = mono_class_is_open_constructed_type (res->ret);
717 for (i = 0; i < sig->param_count; ++i) {
718 res->params [i] = mono_class_inflate_generic_type (sig->params [i], context);
720 is_open = mono_class_is_open_constructed_type (res->params [i]);
722 res->hasthis = sig->hasthis;
723 res->explicit_this = sig->explicit_this;
724 res->call_convention = sig->call_convention;
725 res->pinvoke = sig->pinvoke;
726 res->generic_param_count = sig->generic_param_count;
727 res->sentinelpos = sig->sentinelpos;
728 res->has_type_parameters = is_open;
729 res->is_inflated = 1;
733 static MonoMethodHeader*
734 inflate_generic_header (MonoMethodHeader *header, MonoGenericContext *context)
736 MonoMethodHeader *res;
738 res = g_malloc0 (MONO_SIZEOF_METHOD_HEADER + sizeof (gpointer) * header->num_locals);
739 res->code = header->code;
740 res->code_size = header->code_size;
741 res->max_stack = header->max_stack;
742 res->num_clauses = header->num_clauses;
743 res->init_locals = header->init_locals;
744 res->num_locals = header->num_locals;
745 res->clauses = header->clauses;
746 for (i = 0; i < header->num_locals; ++i)
747 res->locals [i] = mono_class_inflate_generic_type (header->locals [i], context);
748 if (res->num_clauses) {
749 res->clauses = g_memdup (header->clauses, sizeof (MonoExceptionClause) * res->num_clauses);
750 for (i = 0; i < header->num_clauses; ++i) {
751 MonoExceptionClause *clause = &res->clauses [i];
752 if (clause->flags != MONO_EXCEPTION_CLAUSE_NONE)
754 clause->data.catch_class = mono_class_inflate_generic_class (clause->data.catch_class, context);
761 * token is the method_ref/def/spec token used in a call IL instruction.
764 mono_method_get_signature_full (MonoMethod *method, MonoImage *image, guint32 token, MonoGenericContext *context)
766 int table = mono_metadata_token_table (token);
767 int idx = mono_metadata_token_index (token);
769 guint32 cols [MONO_MEMBERREF_SIZE];
770 MonoMethodSignature *sig;
773 /* !table is for wrappers: we should really assign their own token to them */
774 if (!table || table == MONO_TABLE_METHOD)
775 return mono_method_signature (method);
777 if (table == MONO_TABLE_METHODSPEC) {
778 g_assert (!(method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) &&
779 mono_method_signature (method));
780 g_assert (method->is_inflated);
782 return mono_method_signature (method);
785 if (method->klass->generic_class)
786 return mono_method_signature (method);
789 /* FIXME: This might be incorrect for vararg methods */
790 return mono_method_signature (method);
792 mono_metadata_decode_row (&image->tables [MONO_TABLE_MEMBERREF], idx-1, cols, MONO_MEMBERREF_SIZE);
793 sig_idx = cols [MONO_MEMBERREF_SIGNATURE];
795 sig = find_cached_memberref_sig (image, sig_idx);
797 if (!mono_verifier_verify_memberref_signature (image, sig_idx, NULL)) {
798 guint32 class = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
799 const char *fname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
801 mono_loader_set_error_bad_image (g_strdup_printf ("Bad method signature class token %08x field name %s token %08x", class, fname, token));
805 ptr = mono_metadata_blob_heap (image, sig_idx);
806 mono_metadata_decode_blob_size (ptr, &ptr);
807 sig = mono_metadata_parse_method_signature (image, 0, ptr, NULL);
810 sig = cache_memberref_sig (image, sig_idx, sig);
814 MonoMethodSignature *cached;
816 /* This signature is not owned by a MonoMethod, so need to cache */
817 sig = inflate_generic_signature (image, sig, context);
818 cached = mono_metadata_get_inflated_signature (sig, context);
820 mono_metadata_free_inflated_signature (sig);
822 inflated_signatures_size += mono_metadata_signature_size (cached);
830 mono_method_get_signature (MonoMethod *method, MonoImage *image, guint32 token)
832 return mono_method_get_signature_full (method, image, token, NULL);
835 /* this is only for the typespec array methods */
837 mono_method_search_in_array_class (MonoClass *klass, const char *name, MonoMethodSignature *sig)
841 mono_class_setup_methods (klass);
843 for (i = 0; i < klass->method.count; ++i) {
844 MonoMethod *method = klass->methods [i];
845 if (strcmp (method->name, name) == 0 && sig->param_count == method->signature->param_count)
852 method_from_memberref (MonoImage *image, guint32 idx, MonoGenericContext *typespec_context,
853 gboolean *used_context)
855 MonoClass *klass = NULL;
856 MonoMethod *method = NULL;
857 MonoTableInfo *tables = image->tables;
859 guint32 nindex, class, sig_idx;
861 MonoMethodSignature *sig;
864 mono_metadata_decode_row (&tables [MONO_TABLE_MEMBERREF], idx-1, cols, 3);
865 nindex = cols [MONO_MEMBERREF_CLASS] >> MONO_MEMBERREF_PARENT_BITS;
866 class = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
867 /*g_print ("methodref: 0x%x 0x%x %s\n", class, nindex,
868 mono_metadata_string_heap (m, cols [MONO_MEMBERREF_NAME]));*/
870 mname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
873 * Whether we actually used the `typespec_context' or not.
874 * This is used to tell our caller whether or not it's safe to insert the returned
875 * method into a cache.
878 *used_context = class == MONO_MEMBERREF_PARENT_TYPESPEC;
881 case MONO_MEMBERREF_PARENT_TYPEREF:
882 klass = mono_class_from_typeref (image, MONO_TOKEN_TYPE_REF | nindex);
884 char *name = mono_class_name_from_token (image, MONO_TOKEN_TYPE_REF | nindex);
885 g_warning ("Missing method %s in assembly %s, type %s", mname, image->name, name);
886 mono_loader_set_error_type_load (name, image->assembly_name);
891 case MONO_MEMBERREF_PARENT_TYPESPEC:
893 * Parse the TYPESPEC in the parent's context.
895 klass = mono_class_get_full (image, MONO_TOKEN_TYPE_SPEC | nindex, typespec_context);
897 char *name = mono_class_name_from_token (image, MONO_TOKEN_TYPE_SPEC | nindex);
898 g_warning ("Missing method %s in assembly %s, type %s", mname, image->name, name);
899 mono_loader_set_error_type_load (name, image->assembly_name);
904 case MONO_MEMBERREF_PARENT_TYPEDEF:
905 klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF | nindex);
907 char *name = mono_class_name_from_token (image, MONO_TOKEN_TYPE_DEF | nindex);
908 g_warning ("Missing method %s in assembly %s, type %s", mname, image->name, name);
909 mono_loader_set_error_type_load (name, image->assembly_name);
914 case MONO_MEMBERREF_PARENT_METHODDEF:
915 return mono_get_method (image, MONO_TOKEN_METHOD_DEF | nindex, NULL);
919 /* This message leaks */
920 char *message = g_strdup_printf ("Memberref parent unknown: class: %d, index %d", class, nindex);
921 mono_loader_set_error_method_load ("", message);
927 mono_class_init (klass);
929 sig_idx = cols [MONO_MEMBERREF_SIGNATURE];
931 if (!mono_verifier_verify_memberref_signature (image, sig_idx, NULL)) {
932 mono_loader_set_error_method_load (klass->name, mname);
936 ptr = mono_metadata_blob_heap (image, sig_idx);
937 mono_metadata_decode_blob_size (ptr, &ptr);
939 sig = find_cached_memberref_sig (image, sig_idx);
941 sig = mono_metadata_parse_method_signature (image, 0, ptr, NULL);
945 sig = cache_memberref_sig (image, sig_idx, sig);
949 case MONO_MEMBERREF_PARENT_TYPEREF:
950 case MONO_MEMBERREF_PARENT_TYPEDEF:
951 method = find_method (klass, NULL, mname, sig, klass);
954 case MONO_MEMBERREF_PARENT_TYPESPEC: {
957 type = &klass->byval_arg;
959 if (type->type != MONO_TYPE_ARRAY && type->type != MONO_TYPE_SZARRAY) {
960 MonoClass *in_class = klass->generic_class ? klass->generic_class->container_class : klass;
961 method = find_method (in_class, NULL, mname, sig, klass);
965 /* we're an array and we created these methods already in klass in mono_class_init () */
966 method = mono_method_search_in_array_class (klass, mname, sig);
970 g_error ("Memberref parent unknown: class: %d, index %d", class, nindex);
971 g_assert_not_reached ();
975 char *msig = mono_signature_get_desc (sig, FALSE);
976 char * class_name = mono_type_get_name (&klass->byval_arg);
977 GString *s = g_string_new (mname);
978 if (sig->generic_param_count)
979 g_string_append_printf (s, "<[%d]>", sig->generic_param_count);
980 g_string_append_printf (s, "(%s)", msig);
982 msig = g_string_free (s, FALSE);
985 "Missing method %s::%s in assembly %s, referenced in assembly %s",
986 class_name, msig, klass->image->name, image->name);
987 mono_loader_set_error_method_load (class_name, mname);
996 method_from_methodspec (MonoImage *image, MonoGenericContext *context, guint32 idx)
1000 MonoTableInfo *tables = image->tables;
1001 MonoGenericContext new_context;
1002 MonoGenericInst *inst;
1004 guint32 cols [MONO_METHODSPEC_SIZE];
1005 guint32 token, nindex, param_count;
1007 mono_metadata_decode_row (&tables [MONO_TABLE_METHODSPEC], idx - 1, cols, MONO_METHODSPEC_SIZE);
1008 token = cols [MONO_METHODSPEC_METHOD];
1009 nindex = token >> MONO_METHODDEFORREF_BITS;
1011 if (!mono_verifier_verify_methodspec_signature (image, cols [MONO_METHODSPEC_SIGNATURE], NULL))
1014 ptr = mono_metadata_blob_heap (image, cols [MONO_METHODSPEC_SIGNATURE]);
1016 mono_metadata_decode_value (ptr, &ptr);
1018 param_count = mono_metadata_decode_value (ptr, &ptr);
1019 g_assert (param_count);
1021 inst = mono_metadata_parse_generic_inst (image, NULL, param_count, ptr, &ptr);
1022 if (context && inst->is_open)
1023 inst = mono_metadata_inflate_generic_inst (inst, context);
1025 if ((token & MONO_METHODDEFORREF_MASK) == MONO_METHODDEFORREF_METHODDEF)
1026 method = mono_get_method_full (image, MONO_TOKEN_METHOD_DEF | nindex, NULL, context);
1028 method = method_from_memberref (image, nindex, context, NULL);
1033 klass = method->klass;
1035 if (klass->generic_class) {
1036 g_assert (method->is_inflated);
1037 method = ((MonoMethodInflated *) method)->declaring;
1040 new_context.class_inst = klass->generic_class ? klass->generic_class->context.class_inst : NULL;
1041 new_context.method_inst = inst;
1043 return mono_class_inflate_generic_method_full (method, klass, &new_context);
1046 struct _MonoDllMap {
1054 static MonoDllMap *global_dll_map;
1057 mono_dllmap_lookup_list (MonoDllMap *dll_map, const char *dll, const char* func, const char **rdll, const char **rfunc) {
1065 mono_loader_lock ();
1068 * we use the first entry we find that matches, since entries from
1069 * the config file are prepended to the list and we document that the
1070 * later entries win.
1072 for (; dll_map; dll_map = dll_map->next) {
1073 if (dll_map->dll [0] == 'i' && dll_map->dll [1] == ':') {
1074 if (g_ascii_strcasecmp (dll_map->dll + 2, dll))
1076 } else if (strcmp (dll_map->dll, dll)) {
1079 if (!found && dll_map->target) {
1080 *rdll = dll_map->target;
1082 /* we don't quit here, because we could find a full
1083 * entry that matches also function and that has priority.
1086 if (dll_map->func && strcmp (dll_map->func, func) == 0) {
1087 *rfunc = dll_map->target_func;
1092 mono_loader_unlock ();
1097 mono_dllmap_lookup (MonoImage *assembly, const char *dll, const char* func, const char **rdll, const char **rfunc)
1100 if (assembly && assembly->dll_map) {
1101 res = mono_dllmap_lookup_list (assembly->dll_map, dll, func, rdll, rfunc);
1105 return mono_dllmap_lookup_list (global_dll_map, dll, func, rdll, rfunc);
1109 * mono_dllmap_insert:
1111 * LOCKING: Acquires the loader lock.
1113 * NOTE: This can be called before the runtime is initialized, for example from
1114 * mono_config_parse ().
1117 mono_dllmap_insert (MonoImage *assembly, const char *dll, const char *func, const char *tdll, const char *tfunc)
1121 mono_loader_init ();
1123 mono_loader_lock ();
1126 entry = g_malloc0 (sizeof (MonoDllMap));
1127 entry->dll = dll? g_strdup (dll): NULL;
1128 entry->target = tdll? g_strdup (tdll): NULL;
1129 entry->func = func? g_strdup (func): NULL;
1130 entry->target_func = tfunc? g_strdup (tfunc): NULL;
1131 entry->next = global_dll_map;
1132 global_dll_map = entry;
1134 entry = mono_image_alloc0 (assembly, sizeof (MonoDllMap));
1135 entry->dll = dll? mono_image_strdup (assembly, dll): NULL;
1136 entry->target = tdll? mono_image_strdup (assembly, tdll): NULL;
1137 entry->func = func? mono_image_strdup (assembly, func): NULL;
1138 entry->target_func = tfunc? mono_image_strdup (assembly, tfunc): NULL;
1139 entry->next = assembly->dll_map;
1140 assembly->dll_map = entry;
1143 mono_loader_unlock ();
1146 static GHashTable *global_module_map;
1149 cached_module_load (const char *name, int flags, char **err)
1152 mono_loader_lock ();
1153 if (!global_module_map)
1154 global_module_map = g_hash_table_new (g_str_hash, g_str_equal);
1155 res = g_hash_table_lookup (global_module_map, name);
1158 mono_loader_unlock ();
1161 res = mono_dl_open (name, flags, err);
1163 g_hash_table_insert (global_module_map, g_strdup (name), res);
1164 mono_loader_unlock ();
1169 mono_lookup_pinvoke_call (MonoMethod *method, const char **exc_class, const char **exc_arg)
1171 MonoImage *image = method->klass->image;
1172 MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *)method;
1173 MonoTableInfo *tables = image->tables;
1174 MonoTableInfo *im = &tables [MONO_TABLE_IMPLMAP];
1175 MonoTableInfo *mr = &tables [MONO_TABLE_MODULEREF];
1176 guint32 im_cols [MONO_IMPLMAP_SIZE];
1177 guint32 scope_token;
1178 const char *import = NULL;
1179 const char *orig_scope;
1180 const char *new_scope;
1182 char *full_name, *file_name;
1184 MonoDl *module = NULL;
1186 g_assert (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL);
1189 return piinfo->addr;
1191 if (method->klass->image->dynamic) {
1192 MonoReflectionMethodAux *method_aux =
1193 g_hash_table_lookup (
1194 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
1198 import = method_aux->dllentry;
1199 orig_scope = method_aux->dll;
1202 if (!piinfo->implmap_idx)
1205 mono_metadata_decode_row (im, piinfo->implmap_idx - 1, im_cols, MONO_IMPLMAP_SIZE);
1207 piinfo->piflags = im_cols [MONO_IMPLMAP_FLAGS];
1208 import = mono_metadata_string_heap (image, im_cols [MONO_IMPLMAP_NAME]);
1209 scope_token = mono_metadata_decode_row_col (mr, im_cols [MONO_IMPLMAP_SCOPE] - 1, MONO_MODULEREF_NAME);
1210 orig_scope = mono_metadata_string_heap (image, scope_token);
1213 mono_dllmap_lookup (image, orig_scope, import, &new_scope, &import);
1215 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1216 "DllImport attempting to load: '%s'.", new_scope);
1223 /* we allow a special name to dlopen from the running process namespace */
1224 if (strcmp (new_scope, "__Internal") == 0)
1225 module = mono_dl_open (NULL, MONO_DL_LAZY, &error_msg);
1228 * Try loading the module using a variety of names
1230 for (i = 0; i < 4; ++i) {
1233 /* Try the original name */
1234 file_name = g_strdup (new_scope);
1237 /* Try trimming the .dll extension */
1238 if (strstr (new_scope, ".dll") == (new_scope + strlen (new_scope) - 4)) {
1239 file_name = g_strdup (new_scope);
1240 file_name [strlen (new_scope) - 4] = '\0';
1246 if (strstr (new_scope, "lib") != new_scope) {
1247 file_name = g_strdup_printf ("lib%s", new_scope);
1253 #ifndef PLATFORM_WIN32
1254 if (!g_ascii_strcasecmp ("user32.dll", new_scope) ||
1255 !g_ascii_strcasecmp ("kernel32.dll", new_scope) ||
1256 !g_ascii_strcasecmp ("user32", new_scope) ||
1257 !g_ascii_strcasecmp ("kernel", new_scope)) {
1258 file_name = g_strdup ("libMonoSupportW.so");
1262 #ifndef PLATFORM_WIN32
1269 while ((full_name = mono_dl_build_path (NULL, file_name, &iter))) {
1270 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1271 "DllImport loading location: '%s'.", full_name);
1272 module = cached_module_load (full_name, MONO_DL_LAZY, &error_msg);
1274 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1275 "DllImport error loading library: '%s'.",
1287 while ((full_name = mono_dl_build_path (".", file_name, &iter))) {
1288 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1289 "DllImport loading library: '%s'.", full_name);
1290 module = cached_module_load (full_name, MONO_DL_LAZY, &error_msg);
1292 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1293 "DllImport error loading library '%s'.",
1304 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1305 "DllImport loading: '%s'.", file_name);
1306 module = cached_module_load (file_name, MONO_DL_LAZY, &error_msg);
1308 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1309 "DllImport error loading library '%s'.",
1321 mono_trace (G_LOG_LEVEL_WARNING, MONO_TRACE_DLLIMPORT,
1322 "DllImport unable to load library '%s'.",
1327 *exc_class = "DllNotFoundException";
1328 *exc_arg = new_scope;
1333 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1334 "Searching for '%s'.", import);
1336 if (piinfo->piflags & PINVOKE_ATTRIBUTE_NO_MANGLE) {
1337 error_msg = mono_dl_symbol (module, import, &piinfo->addr);
1339 char *mangled_name = NULL, *mangled_name2 = NULL;
1342 int mangle_param_count;
1343 #ifdef PLATFORM_WIN32
1348 * Search using a variety of mangled names
1350 for (mangle_charset = 0; mangle_charset <= 1; mangle_charset ++) {
1351 for (mangle_stdcall = 0; mangle_stdcall <= 1; mangle_stdcall ++) {
1352 gboolean need_param_count = FALSE;
1353 #ifdef PLATFORM_WIN32
1354 if (mangle_stdcall > 0)
1355 need_param_count = TRUE;
1357 for (mangle_param_count = 0; mangle_param_count <= (need_param_count ? 256 : 0); mangle_param_count += 4) {
1362 mangled_name = (char*)import;
1363 switch (piinfo->piflags & PINVOKE_ATTRIBUTE_CHAR_SET_MASK) {
1364 case PINVOKE_ATTRIBUTE_CHAR_SET_UNICODE:
1365 /* Try the mangled name first */
1366 if (mangle_charset == 0)
1367 mangled_name = g_strconcat (import, "W", NULL);
1369 case PINVOKE_ATTRIBUTE_CHAR_SET_AUTO:
1370 #ifdef PLATFORM_WIN32
1371 if (mangle_charset == 0)
1372 mangled_name = g_strconcat (import, "W", NULL);
1374 /* Try the mangled name last */
1375 if (mangle_charset == 1)
1376 mangled_name = g_strconcat (import, "A", NULL);
1379 case PINVOKE_ATTRIBUTE_CHAR_SET_ANSI:
1381 /* Try the mangled name last */
1382 if (mangle_charset == 1)
1383 mangled_name = g_strconcat (import, "A", NULL);
1387 #ifdef PLATFORM_WIN32
1388 if (mangle_param_count == 0)
1389 param_count = mono_method_signature (method)->param_count * sizeof (gpointer);
1391 /* Try brute force, since it would be very hard to compute the stack usage correctly */
1392 param_count = mangle_param_count;
1394 /* Try the stdcall mangled name */
1396 * gcc under windows creates mangled names without the underscore, but MS.NET
1397 * doesn't support it, so we doesn't support it either.
1399 if (mangle_stdcall == 1)
1400 mangled_name2 = g_strdup_printf ("_%s@%d", mangled_name, param_count);
1402 mangled_name2 = mangled_name;
1404 mangled_name2 = mangled_name;
1407 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1408 "Probing '%s'.", mangled_name2);
1410 error_msg = mono_dl_symbol (module, mangled_name2, &piinfo->addr);
1413 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
1414 "Found as '%s'.", mangled_name2);
1416 if (mangled_name != mangled_name2)
1417 g_free (mangled_name2);
1418 if (mangled_name != import)
1419 g_free (mangled_name);
1425 if (!piinfo->addr) {
1428 *exc_class = "EntryPointNotFoundException";
1433 return piinfo->addr;
1437 * LOCKING: assumes the loader lock to be taken.
1440 mono_get_method_from_token (MonoImage *image, guint32 token, MonoClass *klass,
1441 MonoGenericContext *context, gboolean *used_context)
1444 int table = mono_metadata_token_table (token);
1445 int idx = mono_metadata_token_index (token);
1446 MonoTableInfo *tables = image->tables;
1447 MonoGenericContainer *generic_container = NULL, *container = NULL;
1448 const char *sig = NULL;
1450 guint32 cols [MONO_TYPEDEF_SIZE];
1452 if (image->dynamic) {
1453 MonoClass *handle_class;
1455 result = mono_lookup_dynamic_token_class (image, token, TRUE, &handle_class, context);
1456 // This checks the memberref type as well
1457 if (result && handle_class != mono_defaults.methodhandle_class) {
1458 mono_loader_set_error_bad_image (g_strdup_printf ("Bad method token 0x%08x on image %s.", token, image->name));
1464 if (table != MONO_TABLE_METHOD) {
1465 if (table == MONO_TABLE_METHODSPEC) {
1466 if (used_context) *used_context = TRUE;
1467 return method_from_methodspec (image, context, idx);
1469 if (table != MONO_TABLE_MEMBERREF) {
1470 g_warning ("got wrong token: 0x%08x\n", token);
1471 mono_loader_set_error_bad_image (g_strdup_printf ("Bad method token 0x%08x on image %s.", token, image->name));
1474 return method_from_memberref (image, idx, context, used_context);
1477 if (used_context) *used_context = FALSE;
1479 if (idx > image->tables [MONO_TABLE_METHOD].rows) {
1480 mono_loader_set_error_bad_image (g_strdup_printf ("Bad method token 0x%08x on image %s.", token, image->name));
1484 mono_metadata_decode_row (&image->tables [MONO_TABLE_METHOD], idx - 1, cols, 6);
1486 if ((cols [2] & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
1487 (cols [1] & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL))
1488 result = (MonoMethod *)mono_image_alloc0 (image, sizeof (MonoMethodPInvoke));
1490 result = (MonoMethod *)mono_image_alloc0 (image, sizeof (MonoMethodNormal));
1492 mono_stats.method_count ++;
1494 if (!klass) { /*FIXME put this before the image alloc*/
1495 guint32 type = mono_metadata_typedef_from_method (image, token);
1496 klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF | type);
1502 result->klass = klass;
1503 result->flags = cols [2];
1504 result->iflags = cols [1];
1505 result->token = token;
1506 result->name = mono_metadata_string_heap (image, cols [3]);
1508 if (!sig) /* already taken from the methodref */
1509 sig = mono_metadata_blob_heap (image, cols [4]);
1510 size = mono_metadata_decode_blob_size (sig, &sig);
1512 container = klass->generic_container;
1515 * load_generic_params does a binary search so only call it if the method
1519 generic_container = mono_metadata_load_generic_params (image, token, container);
1520 if (generic_container) {
1521 result->is_generic = TRUE;
1522 generic_container->owner.method = result;
1523 /*FIXME put this before the image alloc*/
1524 if (!mono_metadata_load_generic_param_constraints_full (image, token, generic_container))
1527 container = generic_container;
1530 if (cols [1] & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) {
1531 if (result->klass == mono_defaults.string_class && !strcmp (result->name, ".ctor"))
1532 result->string_ctor = 1;
1533 } else if (cols [2] & METHOD_ATTRIBUTE_PINVOKE_IMPL) {
1534 MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *)result;
1536 #ifdef PLATFORM_WIN32
1537 /* IJW is P/Invoke with a predefined function pointer. */
1538 if (image->is_module_handle && (cols [1] & METHOD_IMPL_ATTRIBUTE_NATIVE)) {
1539 piinfo->addr = mono_image_rva_map (image, cols [0]);
1540 g_assert (piinfo->addr);
1543 piinfo->implmap_idx = mono_metadata_implmap_from_method (image, idx - 1);
1544 /* Native methods can have no map. */
1545 if (piinfo->implmap_idx)
1546 piinfo->piflags = mono_metadata_decode_row_col (&tables [MONO_TABLE_IMPLMAP], piinfo->implmap_idx - 1, MONO_IMPLMAP_FLAGS);
1549 if (generic_container)
1550 mono_method_set_generic_container (result, generic_container);
1556 mono_get_method (MonoImage *image, guint32 token, MonoClass *klass)
1558 return mono_get_method_full (image, token, klass, NULL);
1562 get_method_token (gpointer value)
1564 MonoMethod *m = (MonoMethod*)value;
1566 return GUINT_TO_POINTER (m->token);
1570 mono_get_method_full (MonoImage *image, guint32 token, MonoClass *klass,
1571 MonoGenericContext *context)
1574 gboolean used_context = FALSE;
1576 /* We do everything inside the lock to prevent creation races */
1578 mono_image_lock (image);
1580 if (mono_metadata_token_table (token) == MONO_TABLE_METHOD) {
1581 if (!image->method_cache)
1582 image->method_cache = mono_value_hash_table_new (NULL, NULL, get_method_token);
1583 result = mono_value_hash_table_lookup (image->method_cache, GINT_TO_POINTER (token));
1585 if (!image->methodref_cache)
1586 image->methodref_cache = g_hash_table_new (NULL, NULL);
1587 result = g_hash_table_lookup (image->methodref_cache, GINT_TO_POINTER (token));
1589 mono_image_unlock (image);
1594 result = mono_get_method_from_token (image, token, klass, context, &used_context);
1598 mono_image_lock (image);
1599 if (!used_context && !result->is_inflated) {
1600 MonoMethod *result2;
1601 if (mono_metadata_token_table (token) == MONO_TABLE_METHOD)
1602 result2 = mono_value_hash_table_lookup (image->method_cache, GINT_TO_POINTER (token));
1604 result2 = g_hash_table_lookup (image->methodref_cache, GINT_TO_POINTER (token));
1607 mono_image_unlock (image);
1611 if (mono_metadata_token_table (token) == MONO_TABLE_METHOD)
1612 mono_value_hash_table_insert (image->method_cache, GINT_TO_POINTER (token), result);
1614 g_hash_table_insert (image->methodref_cache, GINT_TO_POINTER (token), result);
1617 mono_image_unlock (image);
1623 * mono_get_method_constrained:
1625 * This is used when JITing the `constrained.' opcode.
1627 * This returns two values: the contrained method, which has been inflated
1628 * as the function return value; And the original CIL-stream method as
1629 * declared in cil_method. The later is used for verification.
1632 mono_get_method_constrained (MonoImage *image, guint32 token, MonoClass *constrained_class,
1633 MonoGenericContext *context, MonoMethod **cil_method)
1635 MonoMethod *method, *result;
1636 MonoClass *ic = NULL;
1637 MonoGenericContext *method_context = NULL;
1638 MonoMethodSignature *sig, *original_sig;
1640 mono_loader_lock ();
1642 *cil_method = mono_get_method_from_token (image, token, NULL, context, NULL);
1644 mono_loader_unlock ();
1648 mono_class_init (constrained_class);
1649 method = *cil_method;
1650 original_sig = sig = mono_method_signature (method);
1654 if (method->is_inflated && sig->generic_param_count) {
1655 MonoMethodInflated *imethod = (MonoMethodInflated *) method;
1656 sig = mono_method_signature (imethod->declaring); /*We assume that if the inflated method signature is valid, the declaring method is too*/
1657 method_context = mono_method_get_context (method);
1661 * We must inflate the signature with the class instantiation to work on
1662 * cases where a class inherit from a generic type and the override replaces
1663 * any type argument which a concrete type. See #325283.
1665 if (method_context->class_inst) {
1666 MonoGenericContext ctx;
1667 ctx.method_inst = NULL;
1668 ctx.class_inst = method_context->class_inst;
1670 sig = inflate_generic_signature (method->klass->image, sig, &ctx);
1676 if ((constrained_class != method->klass) && (MONO_CLASS_IS_INTERFACE (method->klass)))
1679 result = find_method (constrained_class, ic, method->name, sig, constrained_class);
1680 if (sig != original_sig)
1681 mono_metadata_free_inflated_signature (sig);
1684 g_warning ("Missing method %s.%s.%s in assembly %s token %x", method->klass->name_space,
1685 method->klass->name, method->name, image->name, token);
1686 mono_loader_unlock ();
1691 result = mono_class_inflate_generic_method (result, method_context);
1693 mono_loader_unlock ();
1698 mono_free_method (MonoMethod *method)
1700 if (mono_profiler_get_events () & MONO_PROFILE_METHOD_EVENTS)
1701 mono_profiler_method_free (method);
1703 /* FIXME: This hack will go away when the profiler will support freeing methods */
1704 if (mono_profiler_get_events () != MONO_PROFILE_NONE)
1707 if (method->signature) {
1709 * FIXME: This causes crashes because the types inside signatures and
1710 * locals are shared.
1712 /* mono_metadata_free_method_signature (method->signature); */
1713 /* g_free (method->signature); */
1716 if (method->dynamic) {
1717 MonoMethodWrapper *mw = (MonoMethodWrapper*)method;
1720 mono_marshal_free_dynamic_wrappers (method);
1722 mono_image_property_remove (method->klass->image, method);
1724 g_free ((char*)method->name);
1725 if (mw->method.header) {
1726 g_free ((char*)mw->method.header->code);
1727 for (i = 0; i < mw->method.header->num_locals; ++i)
1728 g_free (mw->method.header->locals [i]);
1729 g_free (mw->method.header->clauses);
1730 g_free (mw->method.header);
1732 g_free (mw->method_data);
1733 g_free (method->signature);
1739 mono_method_get_param_names (MonoMethod *method, const char **names)
1743 MonoTableInfo *methodt;
1744 MonoTableInfo *paramt;
1745 MonoMethodSignature *signature;
1748 if (method->is_inflated)
1749 method = ((MonoMethodInflated *) method)->declaring;
1751 signature = mono_method_signature (method);
1752 /*FIXME this check is somewhat redundant since the caller usally will have to get the signature to figure out the
1753 number of arguments and allocate a properly sized array. */
1754 if (signature == NULL)
1757 if (!signature->param_count)
1760 for (i = 0; i < signature->param_count; ++i)
1763 klass = method->klass;
1767 mono_class_init (klass);
1769 if (klass->image->dynamic) {
1770 MonoReflectionMethodAux *method_aux =
1771 g_hash_table_lookup (
1772 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
1773 if (method_aux && method_aux->param_names) {
1774 for (i = 0; i < mono_method_signature (method)->param_count; ++i)
1775 if (method_aux->param_names [i + 1])
1776 names [i] = method_aux->param_names [i + 1];
1781 methodt = &klass->image->tables [MONO_TABLE_METHOD];
1782 paramt = &klass->image->tables [MONO_TABLE_PARAM];
1783 idx = mono_method_get_index (method);
1785 guint32 cols [MONO_PARAM_SIZE];
1788 param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
1790 if (idx < methodt->rows)
1791 lastp = mono_metadata_decode_row_col (methodt, idx, MONO_METHOD_PARAMLIST);
1793 lastp = paramt->rows + 1;
1794 for (i = param_index; i < lastp; ++i) {
1795 mono_metadata_decode_row (paramt, i -1, cols, MONO_PARAM_SIZE);
1796 if (cols [MONO_PARAM_SEQUENCE] && cols [MONO_PARAM_SEQUENCE] <= signature->param_count) /* skip return param spec and bounds check*/
1797 names [cols [MONO_PARAM_SEQUENCE] - 1] = mono_metadata_string_heap (klass->image, cols [MONO_PARAM_NAME]);
1803 mono_method_get_param_token (MonoMethod *method, int index)
1805 MonoClass *klass = method->klass;
1806 MonoTableInfo *methodt;
1809 mono_class_init (klass);
1811 if (klass->image->dynamic) {
1812 g_assert_not_reached ();
1815 methodt = &klass->image->tables [MONO_TABLE_METHOD];
1816 idx = mono_method_get_index (method);
1818 guint param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
1822 return mono_metadata_make_token (MONO_TABLE_PARAM, 0);
1824 return mono_metadata_make_token (MONO_TABLE_PARAM, param_index + index);
1831 mono_method_get_marshal_info (MonoMethod *method, MonoMarshalSpec **mspecs)
1834 MonoClass *klass = method->klass;
1835 MonoTableInfo *methodt;
1836 MonoTableInfo *paramt;
1837 MonoMethodSignature *signature;
1840 signature = mono_method_signature (method);
1841 g_assert (signature); /*FIXME there is no way to signal error from this function*/
1843 for (i = 0; i < signature->param_count + 1; ++i)
1846 if (method->klass->image->dynamic) {
1847 MonoReflectionMethodAux *method_aux =
1848 g_hash_table_lookup (
1849 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
1850 if (method_aux && method_aux->param_marshall) {
1851 MonoMarshalSpec **dyn_specs = method_aux->param_marshall;
1852 for (i = 0; i < signature->param_count + 1; ++i)
1853 if (dyn_specs [i]) {
1854 mspecs [i] = g_new0 (MonoMarshalSpec, 1);
1855 memcpy (mspecs [i], dyn_specs [i], sizeof (MonoMarshalSpec));
1861 mono_class_init (klass);
1863 methodt = &klass->image->tables [MONO_TABLE_METHOD];
1864 paramt = &klass->image->tables [MONO_TABLE_PARAM];
1865 idx = mono_method_get_index (method);
1867 guint32 cols [MONO_PARAM_SIZE];
1868 guint param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
1870 if (idx < methodt->rows)
1871 lastp = mono_metadata_decode_row_col (methodt, idx, MONO_METHOD_PARAMLIST);
1873 lastp = paramt->rows + 1;
1875 for (i = param_index; i < lastp; ++i) {
1876 mono_metadata_decode_row (paramt, i -1, cols, MONO_PARAM_SIZE);
1878 if (cols [MONO_PARAM_FLAGS] & PARAM_ATTRIBUTE_HAS_FIELD_MARSHAL && cols [MONO_PARAM_SEQUENCE] <= signature->param_count) {
1880 tp = mono_metadata_get_marshal_info (klass->image, i - 1, FALSE);
1882 mspecs [cols [MONO_PARAM_SEQUENCE]]= mono_metadata_parse_marshal_spec (klass->image, tp);
1891 mono_method_has_marshal_info (MonoMethod *method)
1894 MonoClass *klass = method->klass;
1895 MonoTableInfo *methodt;
1896 MonoTableInfo *paramt;
1899 if (method->klass->image->dynamic) {
1900 MonoReflectionMethodAux *method_aux =
1901 g_hash_table_lookup (
1902 ((MonoDynamicImage*)method->klass->image)->method_aux_hash, method);
1903 MonoMarshalSpec **dyn_specs = method_aux->param_marshall;
1905 for (i = 0; i < mono_method_signature (method)->param_count + 1; ++i)
1912 mono_class_init (klass);
1914 methodt = &klass->image->tables [MONO_TABLE_METHOD];
1915 paramt = &klass->image->tables [MONO_TABLE_PARAM];
1916 idx = mono_method_get_index (method);
1918 guint32 cols [MONO_PARAM_SIZE];
1919 guint param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
1921 if (idx + 1 < methodt->rows)
1922 lastp = mono_metadata_decode_row_col (methodt, idx, MONO_METHOD_PARAMLIST);
1924 lastp = paramt->rows + 1;
1926 for (i = param_index; i < lastp; ++i) {
1927 mono_metadata_decode_row (paramt, i -1, cols, MONO_PARAM_SIZE);
1929 if (cols [MONO_PARAM_FLAGS] & PARAM_ATTRIBUTE_HAS_FIELD_MARSHAL)
1938 mono_method_get_wrapper_data (MonoMethod *method, guint32 id)
1941 g_assert (method != NULL);
1942 g_assert (method->wrapper_type != MONO_WRAPPER_NONE);
1944 if (method->is_inflated)
1945 method = ((MonoMethodInflated *) method)->declaring;
1946 data = ((MonoMethodWrapper *)method)->method_data;
1947 g_assert (data != NULL);
1948 g_assert (id <= GPOINTER_TO_UINT (*data));
1953 default_stack_walk (MonoStackWalk func, gboolean do_il_offset, gpointer user_data) {
1954 g_error ("stack walk not installed");
1957 static MonoStackWalkImpl stack_walk = default_stack_walk;
1960 mono_stack_walk (MonoStackWalk func, gpointer user_data)
1962 stack_walk (func, TRUE, user_data);
1966 mono_stack_walk_no_il (MonoStackWalk func, gpointer user_data)
1968 stack_walk (func, FALSE, user_data);
1972 mono_install_stack_walk (MonoStackWalkImpl func)
1978 last_managed (MonoMethod *m, gint no, gint ilo, gboolean managed, gpointer data)
1980 MonoMethod **dest = data;
1982 /*g_print ("In %s::%s [%d] [%d]\n", m->klass->name, m->name, no, ilo);*/
1988 mono_method_get_last_managed (void)
1990 MonoMethod *m = NULL;
1991 stack_walk (last_managed, FALSE, &m);
1998 * See docs/thread-safety.txt for the locking strategy.
2001 mono_loader_lock (void)
2003 mono_locks_acquire (&loader_mutex, LoaderLock);
2007 mono_loader_unlock (void)
2009 mono_locks_release (&loader_mutex, LoaderLock);
2013 * mono_method_signature:
2015 * Return the signature of the method M. On failure, returns NULL.
2017 MonoMethodSignature*
2018 mono_method_signature (MonoMethod *m)
2024 gboolean can_cache_signature;
2025 MonoGenericContainer *container;
2026 MonoMethodSignature *signature = NULL;
2030 /* We need memory barriers below because of the double-checked locking pattern */
2033 return m->signature;
2035 mono_loader_lock ();
2038 mono_loader_unlock ();
2039 return m->signature;
2042 if (m->is_inflated) {
2043 MonoMethodInflated *imethod = (MonoMethodInflated *) m;
2044 /* the lock is recursive */
2045 signature = mono_method_signature (imethod->declaring);
2046 signature = inflate_generic_signature (imethod->declaring->klass->image, signature, mono_method_get_context (m));
2048 inflated_signatures_size += mono_metadata_signature_size (signature);
2050 mono_memory_barrier ();
2051 m->signature = signature;
2052 mono_loader_unlock ();
2053 return m->signature;
2056 g_assert (mono_metadata_token_table (m->token) == MONO_TABLE_METHOD);
2057 idx = mono_metadata_token_index (m->token);
2058 img = m->klass->image;
2060 sig = mono_metadata_blob_heap (img, sig_offset = mono_metadata_decode_row_col (&img->tables [MONO_TABLE_METHOD], idx - 1, MONO_METHOD_SIGNATURE));
2062 g_assert (!m->klass->generic_class);
2063 container = mono_method_get_generic_container (m);
2065 container = m->klass->generic_container;
2067 /* Generic signatures depend on the container so they cannot be cached */
2068 /* icall/pinvoke signatures cannot be cached cause we modify them below */
2069 can_cache_signature = !(m->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && !(m->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) && !container;
2071 /* If the method has parameter attributes, that can modify the signature */
2072 pattrs = mono_metadata_get_param_attrs (img, idx);
2074 can_cache_signature = FALSE;
2078 if (can_cache_signature)
2079 signature = g_hash_table_lookup (img->method_signatures, sig);
2082 const char *sig_body;
2083 /*TODO we should cache the failure result somewhere*/
2084 if (!mono_verifier_verify_method_signature (img, sig_offset, NULL)) {
2085 mono_loader_unlock ();
2089 size = mono_metadata_decode_blob_size (sig, &sig_body);
2091 signature = mono_metadata_parse_method_signature_full (img, container, idx, sig_body, NULL);
2093 mono_loader_unlock ();
2097 if (can_cache_signature)
2098 g_hash_table_insert (img->method_signatures, (gpointer)sig, signature);
2101 /* Verify metadata consistency */
2102 if (signature->generic_param_count) {
2103 if (!container || !container->is_method) {
2104 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);
2107 if (container->type_argc != signature->generic_param_count) {
2108 g_warning ("Inconsistent generic parameter count. Signature says %d, generic_params table says %dfor method 0x%08x from image %s",
2109 signature->generic_param_count, container->type_argc, idx, img->name);
2112 } else if (container && container->is_method && container->type_argc) {
2113 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);
2116 if (m->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL)
2117 signature->pinvoke = 1;
2118 else if (m->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) {
2119 MonoCallConvention conv = 0;
2120 MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *)m;
2121 signature->pinvoke = 1;
2123 switch (piinfo->piflags & PINVOKE_ATTRIBUTE_CALL_CONV_MASK) {
2124 case 0: /* no call conv, so using default */
2125 case PINVOKE_ATTRIBUTE_CALL_CONV_WINAPI:
2126 conv = MONO_CALL_DEFAULT;
2128 case PINVOKE_ATTRIBUTE_CALL_CONV_CDECL:
2131 case PINVOKE_ATTRIBUTE_CALL_CONV_STDCALL:
2132 conv = MONO_CALL_STDCALL;
2134 case PINVOKE_ATTRIBUTE_CALL_CONV_THISCALL:
2135 conv = MONO_CALL_THISCALL;
2137 case PINVOKE_ATTRIBUTE_CALL_CONV_FASTCALL:
2138 conv = MONO_CALL_FASTCALL;
2140 case PINVOKE_ATTRIBUTE_CALL_CONV_GENERIC:
2141 case PINVOKE_ATTRIBUTE_CALL_CONV_GENERICINST:
2143 g_warning ("unsupported calling convention : 0x%04x for method 0x%08x from image %s", piinfo->piflags, idx, img->name);
2146 signature->call_convention = conv;
2149 mono_memory_barrier ();
2150 m->signature = signature;
2152 mono_loader_unlock ();
2153 return m->signature;
2157 mono_method_get_name (MonoMethod *method)
2159 return method->name;
2163 mono_method_get_class (MonoMethod *method)
2165 return method->klass;
2169 mono_method_get_token (MonoMethod *method)
2171 return method->token;
2175 mono_method_get_header (MonoMethod *method)
2181 MonoMethodNormal* mn = (MonoMethodNormal*) method;
2182 MonoMethodHeader *header;
2184 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))
2188 if (G_LIKELY (mn->header))
2194 if (method->is_inflated) {
2195 MonoMethodInflated *imethod = (MonoMethodInflated *) method;
2196 MonoMethodHeader *header;
2198 header = mono_method_get_header (imethod->declaring);
2200 mono_loader_lock ();
2203 mono_loader_unlock ();
2207 mn->header = inflate_generic_header (header, mono_method_get_context (method));
2208 mono_loader_unlock ();
2213 * Do most of the work outside the loader lock, to avoid assembly loader hook
2216 g_assert (mono_metadata_token_table (method->token) == MONO_TABLE_METHOD);
2217 idx = mono_metadata_token_index (method->token);
2218 img = method->klass->image;
2219 rva = mono_metadata_decode_row_col (&img->tables [MONO_TABLE_METHOD], idx - 1, MONO_METHOD_RVA);
2220 loc = mono_image_rva_map (img, rva);
2224 if (!mono_verifier_verify_method_header (img, rva, NULL))
2227 header = mono_metadata_parse_mh_full (img, mono_method_get_generic_container (method), loc);
2229 mono_loader_lock ();
2232 /* header is allocated from the image mempool, no need to free it */
2233 mono_loader_unlock ();
2237 mono_memory_barrier ();
2239 mn->header = header;
2241 mono_loader_unlock ();
2246 mono_method_get_flags (MonoMethod *method, guint32 *iflags)
2249 *iflags = method->iflags;
2250 return method->flags;
2254 * Find the method index in the metadata methodDef table.
2257 mono_method_get_index (MonoMethod *method) {
2258 MonoClass *klass = method->klass;
2262 return mono_metadata_token_index (method->token);
2264 mono_class_setup_methods (klass);
2265 for (i = 0; i < klass->method.count; ++i) {
2266 if (method == klass->methods [i]) {
2267 if (klass->image->uncompressed_metadata)
2268 return mono_metadata_translate_token_index (klass->image, MONO_TABLE_METHOD, klass->method.first + i + 1);
2270 return klass->method.first + i + 1;