2006-12-15 Miguel de Icaza <miguel@novell.com>
[mono.git] / mono / metadata / class.c
index bd75a0b7aa4c94a215cd4307e148f217c69ccb27..8bec0f3e97697d5adca56c016fd6ae364b209ef8 100644 (file)
@@ -35,6 +35,9 @@ MonoStats mono_stats;
 
 gboolean mono_print_vtable = FALSE;
 
+/* Function supplied by the runtime to find classes by name using information from the AOT file */
+static MonoGetClassFromName get_class_from_name = NULL;
+
 static MonoClass * mono_class_create_from_typedef (MonoImage *image, guint32 type_token);
 static void mono_class_create_generic (MonoInflatedGenericClass *gclass);
 static gboolean mono_class_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res);
@@ -741,7 +744,6 @@ mono_class_find_enum_basetype (MonoClass *class)
 {
        MonoImage *m = class->image; 
        const int top = class->field.count;
-       MonoTableInfo *t = &m->tables [MONO_TABLE_FIELD];
        int i;
 
        g_assert (class->enumtype);
@@ -756,7 +758,8 @@ mono_class_find_enum_basetype (MonoClass *class)
                MonoGenericContainer *container = NULL;
                MonoType *ftype;
 
-               mono_metadata_decode_row (t, idx, cols, MONO_FIELD_SIZE);
+               /* class->field.first and idx points into the fieldptr table */
+               mono_metadata_decode_table_row (m, MONO_TABLE_FIELD, idx, cols, MONO_FIELD_SIZE);
                sig = mono_metadata_blob_heap (m, cols [MONO_FIELD_SIGNATURE]);
                mono_metadata_decode_value (sig, &sig);
                /* FIELD signature == 0x06 */
@@ -797,7 +800,6 @@ mono_class_setup_fields (MonoClass *class)
        MonoImage *m = class->image; 
        int top = class->field.count;
        guint32 layout = class->flags & TYPE_ATTRIBUTE_LAYOUT_MASK;
-       MonoTableInfo *t = &m->tables [MONO_TABLE_FIELD];
        int i, blittable = TRUE;
        guint32 real_size = 0;
        guint32 packing_size = 0;
@@ -816,7 +818,8 @@ mono_class_setup_fields (MonoClass *class)
        }
 
        class->instance_size = 0;
-       class->class_size = 0;
+       if (!class->rank)
+               class->sizes.class_size = 0;
 
        if (class->parent) {
                /* For generic instances, class->parent might not have been initialized */
@@ -896,7 +899,8 @@ mono_class_setup_fields (MonoClass *class)
                        const char *sig;
                        guint32 cols [MONO_FIELD_SIZE];
 
-                       mono_metadata_decode_row (t, idx, cols, MONO_FIELD_SIZE);
+                       /* class->field.first and idx points into the fieldptr table */
+                       mono_metadata_decode_table_row (m, MONO_TABLE_FIELD, idx, cols, MONO_FIELD_SIZE);
                        /* The name is needed for fieldrefs */
                        field->name = mono_metadata_string_heap (m, cols [MONO_FIELD_NAME]);
                        sig = mono_metadata_blob_heap (m, cols [MONO_FIELD_SIGNATURE]);
@@ -1116,7 +1120,8 @@ mono_class_layout_fields (MonoClass *class)
 
                for (pass = 0; pass < passes; ++pass) {
                        for (i = 0; i < top; i++){
-                               int size, align;
+                               guint32 size, align;
+                               MonoType *ftype;
 
                                field = &class->fields [i];
 
@@ -1152,6 +1157,13 @@ mono_class_layout_fields (MonoClass *class)
                        
                                /* FIXME (LAMESPEC): should we also change the min alignment according to pack? */
                                align = class->packing_size ? MIN (class->packing_size, align): align;
+                               /* if the field has managed references, we need to force-align it
+                                * see bug #77788
+                                */
+                               ftype = mono_type_get_underlying_type (field->type);
+                               if (MONO_TYPE_IS_REFERENCE (ftype) || ((MONO_TYPE_ISSTRUCT (ftype) && mono_class_has_references (mono_class_from_mono_type (ftype)))))
+                                       align = sizeof (gpointer);
+
                                class->min_align = MAX (align, class->min_align);
                                field->offset = real_size;
                                field->offset += align - 1;
@@ -1170,7 +1182,8 @@ mono_class_layout_fields (MonoClass *class)
        case TYPE_ATTRIBUTE_EXPLICIT_LAYOUT:
                real_size = 0;
                for (i = 0; i < top; i++) {
-                       int size, align;
+                       guint32 size, align;
+                       MonoType *ftype;
 
                        field = &class->fields [i];
 
@@ -1193,6 +1206,12 @@ mono_class_layout_fields (MonoClass *class)
                         * classes and valuetypes.
                         */
                        field->offset += sizeof (MonoObject);
+                       ftype = mono_type_get_underlying_type (field->type);
+                       if (MONO_TYPE_IS_REFERENCE (ftype) || ((MONO_TYPE_ISSTRUCT (ftype) && mono_class_has_references (mono_class_from_mono_type (ftype))))) {
+                               if (field->offset % sizeof (gpointer)) {
+                                       mono_class_set_failure (class, MONO_EXCEPTION_TYPE_LOAD, NULL);
+                               }
+                       }
 
                        /*
                         * Calc max size.
@@ -1219,7 +1238,7 @@ mono_class_layout_fields (MonoClass *class)
         * Compute static field layout and size
         */
        for (i = 0; i < top; i++){
-               int size, align;
+               guint32 size, align;
 
                field = &class->fields [i];
                        
@@ -1229,10 +1248,10 @@ mono_class_layout_fields (MonoClass *class)
                        continue;
 
                size = mono_type_size (field->type, &align);
-               field->offset = class->class_size;
+               field->offset = class->sizes.class_size;
                field->offset += align - 1;
                field->offset &= ~(align - 1);
-               class->class_size = field->offset + size;
+               class->sizes.class_size = field->offset + size;
        }
 }
 
@@ -1267,7 +1286,8 @@ mono_class_setup_methods (MonoClass *class)
        if (!class->methods) {
                methods = mono_mempool_alloc (class->image->mempool, sizeof (MonoMethod*) * class->method.count);
                for (i = 0; i < class->method.count; ++i) {
-                       methods [i] = mono_get_method (class->image, MONO_TOKEN_METHOD_DEF | (i + class->method.first + 1), class);
+                       int idx = mono_metadata_translate_token_index (class->image, MONO_TABLE_METHOD, class->method.first + i + 1);
+                       methods [i] = mono_get_method (class->image, MONO_TOKEN_METHOD_DEF | idx, class);
                }
        }
 
@@ -1287,7 +1307,6 @@ mono_class_setup_properties (MonoClass *class)
 {
        guint startm, endm, i, j;
        guint32 cols [MONO_PROPERTY_SIZE];
-       MonoTableInfo *pt = &class->image->tables [MONO_TABLE_PROPERTY];
        MonoTableInfo *msemt = &class->image->tables [MONO_TABLE_METHODSEMANTICS];
        MonoProperty *properties;
        guint32 last;
@@ -1310,20 +1329,29 @@ mono_class_setup_properties (MonoClass *class)
 
        properties = mono_mempool_alloc0 (class->image->mempool, sizeof (MonoProperty) * class->property.count);
        for (i = class->property.first; i < last; ++i) {
-               mono_metadata_decode_row (pt, i, cols, MONO_PROPERTY_SIZE);
+               mono_metadata_decode_table_row (class->image, MONO_TABLE_PROPERTY, i, cols, MONO_PROPERTY_SIZE);
                properties [i - class->property.first].parent = class;
                properties [i - class->property.first].attrs = cols [MONO_PROPERTY_FLAGS];
                properties [i - class->property.first].name = mono_metadata_string_heap (class->image, cols [MONO_PROPERTY_NAME]);
 
                startm = mono_metadata_methods_from_property (class->image, i, &endm);
                for (j = startm; j < endm; ++j) {
+                       MonoMethod *method;
+
                        mono_metadata_decode_row (msemt, j, cols, MONO_METHOD_SEMA_SIZE);
+
+                       if (class->image->uncompressed_metadata)
+                               /* It seems like the MONO_METHOD_SEMA_METHOD column needs no remapping */
+                               method = mono_get_method (class->image, MONO_TOKEN_METHOD_DEF | cols [MONO_METHOD_SEMA_METHOD], class);
+                       else
+                               method = class->methods [cols [MONO_METHOD_SEMA_METHOD] - 1 - class->method.first];
+
                        switch (cols [MONO_METHOD_SEMA_SEMANTICS]) {
                        case METHOD_SEMANTIC_SETTER:
-                               properties [i - class->property.first].set = class->methods [cols [MONO_METHOD_SEMA_METHOD] - 1 - class->method.first];
+                               properties [i - class->property.first].set = method;
                                break;
                        case METHOD_SEMANTIC_GETTER:
-                               properties [i - class->property.first].get = class->methods [cols [MONO_METHOD_SEMA_METHOD] - 1 - class->method.first];
+                               properties [i - class->property.first].get = method;
                                break;
                        default:
                                break;
@@ -1391,7 +1419,6 @@ mono_class_setup_events (MonoClass *class)
 {
        guint startm, endm, i, j;
        guint32 cols [MONO_EVENT_SIZE];
-       MonoTableInfo *pt = &class->image->tables [MONO_TABLE_EVENT];
        MonoTableInfo *msemt = &class->image->tables [MONO_TABLE_METHODSEMANTICS];
        guint32 last;
        MonoEvent *events;
@@ -1436,24 +1463,33 @@ mono_class_setup_events (MonoClass *class)
        events = mono_mempool_alloc0 (class->image->mempool, sizeof (MonoEvent) * class->event.count);
        for (i = class->event.first; i < last; ++i) {
                MonoEvent *event = &events [i - class->event.first];
-                       
-               mono_metadata_decode_row (pt, i, cols, MONO_EVENT_SIZE);
+
+               mono_metadata_decode_table_row (class->image, MONO_TABLE_EVENT, i, cols, MONO_EVENT_SIZE);
                event->parent = class;
                event->attrs = cols [MONO_EVENT_FLAGS];
                event->name = mono_metadata_string_heap (class->image, cols [MONO_EVENT_NAME]);
 
                startm = mono_metadata_methods_from_event (class->image, i, &endm);
                for (j = startm; j < endm; ++j) {
+                       MonoMethod *method;
+
                        mono_metadata_decode_row (msemt, j, cols, MONO_METHOD_SEMA_SIZE);
+
+                       if (class->image->uncompressed_metadata)
+                               /* It seems like the MONO_METHOD_SEMA_METHOD column needs no remapping */
+                               method = mono_get_method (class->image, MONO_TOKEN_METHOD_DEF | cols [MONO_METHOD_SEMA_METHOD], class);
+                       else
+                               method = class->methods [cols [MONO_METHOD_SEMA_METHOD] - 1 - class->method.first];
+
                        switch (cols [MONO_METHOD_SEMA_SEMANTICS]) {
                        case METHOD_SEMANTIC_ADD_ON:
-                               event->add = class->methods [cols [MONO_METHOD_SEMA_METHOD] - 1 - class->method.first];
+                               event->add = method;
                                break;
                        case METHOD_SEMANTIC_REMOVE_ON:
-                               event->remove = class->methods [cols [MONO_METHOD_SEMA_METHOD] - 1 - class->method.first];
+                               event->remove = method;
                                break;
                        case METHOD_SEMANTIC_FIRE:
-                               event->raise = class->methods [cols [MONO_METHOD_SEMA_METHOD] - 1 - class->method.first];
+                               event->raise = method;
                                break;
                        case METHOD_SEMANTIC_OTHER: {
                                int n = 0;
@@ -1465,7 +1501,7 @@ mono_class_setup_events (MonoClass *class)
                                                n++;
                                        event->other = g_realloc (event->other, (n + 2) * sizeof (MonoMethod*));
                                }
-                               event->other [n] = class->methods [cols [MONO_METHOD_SEMA_METHOD] - 1 - class->method.first];
+                               event->other [n] = method;
                                /* NULL terminated */
                                event->other [n + 1] = NULL;
                                break;
@@ -2264,6 +2300,46 @@ g_list_prepend_mempool (GList* l, MonoMemPool* mp, gpointer datum)
        return n;
 }
 
+static void
+setup_generic_array_ifaces (MonoClass *class, MonoClass *iface, int pos)
+{
+       MonoGenericContext *context;
+       int i;
+
+       context = g_new0 (MonoGenericContext, 1);
+       context->container = iface->generic_class->context->container;
+       context->gmethod = g_new0 (MonoGenericMethod, 1);
+       context->gmethod->generic_class = iface->generic_class;
+       context->gmethod->inst = iface->generic_class->inst;
+
+       for (i = 0; i < class->parent->method.count; i++) {
+               MonoMethod *m = class->parent->methods [i];
+               MonoMethod *inflated;
+               const char *mname, *iname;
+               gchar *name;
+
+               if (!strncmp (m->name, "InternalArray__ICollection_", 27)) {
+                       iname = "System.Collections.Generic.ICollection`1.";
+                       mname = m->name + 27;
+               } else if (!strncmp (m->name, "InternalArray__IEnumerable_", 27)) {
+                       iname = "System.Collections.Generic.IEnumerable`1.";
+                       mname = m->name + 27;
+               } else if (!strncmp (m->name, "InternalArray__", 15)) {
+                       iname = "System.Collections.Generic.IList`1.";
+                       mname = m->name + 15;
+               } else {
+                       continue;
+               }
+
+               name = mono_mempool_alloc (class->image->mempool, strlen (iname) + strlen (mname) + 1);
+               strcpy (name, iname);
+               strcpy (name + strlen (iname), mname);
+
+               inflated = mono_class_inflate_generic_method (m, context);
+               class->methods [pos++] = mono_marshal_get_generic_array_helper (class, iface, name, inflated);
+       }
+}
+
 /**
  * mono_class_init:
  * @class: the class to initialize
@@ -2391,12 +2467,13 @@ mono_class_init (MonoClass *class)
         */
        if (has_cached_info) {
                class->instance_size = cached_info.instance_size;
-               class->class_size = cached_info.class_size;
+               class->sizes.class_size = cached_info.class_size;
                class->packing_size = cached_info.packing_size;
                class->min_align = cached_info.min_align;
                class->blittable = cached_info.blittable;
                class->has_references = cached_info.has_references;
                class->has_static_refs = cached_info.has_static_refs;
+               class->no_special_static_fields = cached_info.no_special_static_fields;
        }
        else
                if (!class->size_inited){
@@ -2412,7 +2489,20 @@ mono_class_init (MonoClass *class)
        if (class->rank) {
                MonoMethod *ctor;
                MonoMethodSignature *sig;
-               class->method.count = class->rank > 1? 2: 1;
+               int count_generic = 0, first_generic = 0;
+
+               class->method.count = (class->rank > 1? 2: 1);
+
+               if (class->interface_count) {
+                       for (i = 0; i < class->parent->method.count; i++) {
+                               MonoMethod *m = class->parent->methods [i];
+                               if (!strncmp (m->name, "InternalArray__", 15))
+                                       count_generic++;
+                       }
+                       first_generic = class->method.count;
+                       class->method.count += class->interface_count * count_generic;
+               }
+
                sig = mono_metadata_signature_alloc (class->image, class->rank);
                sig->ret = &mono_defaults.void_class->byval_arg;
                sig->pinvoke = TRUE;
@@ -2444,6 +2534,9 @@ mono_class_init (MonoClass *class)
                        ctor->slot = -1;
                        class->methods [1] = ctor;
                }
+
+               for (i = 0; i < class->interface_count; i++)
+                       setup_generic_array_ifaces (class, class->interfaces [i], first_generic + i * count_generic);
        }
 
        mono_class_setup_supertypes (class);
@@ -3051,7 +3144,7 @@ mono_class_create_generic (MonoInflatedGenericClass *gclass)
 
        if (gclass->generic_class.is_dynamic) {
                klass->instance_size = gklass->instance_size;
-               klass->class_size = gklass->class_size;
+               klass->sizes.class_size = gklass->sizes.class_size;
                klass->size_inited = 1;
                klass->inited = 1;
 
@@ -3385,18 +3478,6 @@ mono_bounded_array_class_get (MonoClass *eclass, guint32 rank, gboolean bounded)
        if (image->assembly && image->assembly->dynamic && image->assembly_name && strcmp (image->assembly_name, "mscorlib") == 0) {
                parent = mono_class_from_name (image, "System", "Array");
                corlib_type = TRUE;
-       } else if (mono_defaults.generic_array_class) {
-               MonoType *inflated, **args;
-
-               args = g_new0 (MonoType *, 1);
-               args [0] = &eclass->byval_arg;
-
-               inflated = mono_class_bind_generic_parameters (
-                       &mono_defaults.generic_array_class->byval_arg, 1, args);
-               parent = mono_class_from_mono_type (inflated);
-
-               if (!parent->inited)
-                       mono_class_init (parent);
        } else {
                parent = mono_defaults.array_class;
                if (!parent->inited)
@@ -3423,8 +3504,70 @@ mono_bounded_array_class_get (MonoClass *eclass, guint32 rank, gboolean bounded)
                (eclass->flags & TYPE_ATTRIBUTE_VISIBILITY_MASK);
        class->parent = parent;
        class->instance_size = mono_class_instance_size (class->parent);
-       class->class_size = 0;
+       class->sizes.element_size = mono_class_array_element_size (eclass);
        mono_class_setup_supertypes (class);
+
+       if (mono_defaults.generic_ilist_class) {
+               MonoClass *fclass = NULL;
+               int i;
+
+               if (eclass->valuetype) {
+                       if (eclass == mono_defaults.int16_class)
+                               fclass = mono_defaults.uint16_class;
+                       if (eclass == mono_defaults.uint16_class)
+                               fclass = mono_defaults.int16_class;
+                       if (eclass == mono_defaults.int32_class)
+                               fclass = mono_defaults.uint32_class;
+                       if (eclass == mono_defaults.uint32_class)
+                               fclass = mono_defaults.int32_class;
+                       if (eclass == mono_defaults.int64_class)
+                               fclass = mono_defaults.uint64_class;
+                       if (eclass == mono_defaults.uint64_class)
+                               fclass = mono_defaults.int64_class;
+                       if (eclass == mono_defaults.byte_class)
+                               fclass = mono_defaults.sbyte_class;
+                       if (eclass == mono_defaults.sbyte_class)
+                               fclass = mono_defaults.byte_class;
+
+                       class->interface_count = fclass ? 2 : 1;
+               } else if (MONO_CLASS_IS_INTERFACE (eclass)) {
+                       class->interface_count = 2 + eclass->interface_count;
+               } else {
+                       class->interface_count = eclass->idepth + eclass->interface_count;
+               }
+
+               class->interfaces = g_new0 (MonoClass *, class->interface_count);
+
+               for (i = 0; i < class->interface_count; i++) {
+                       MonoType *inflated, **args;
+                       MonoClass *iface;
+
+                       if (eclass->valuetype)
+                               iface = (i == 0) ? eclass : fclass;
+                       else if (MONO_CLASS_IS_INTERFACE (eclass)) {
+                               if (i == 0)
+                                       iface = mono_defaults.object_class;
+                               else if (i == 1)
+                                       iface = eclass;
+                               else
+                                       iface = eclass->interfaces [i - 2];
+                       } else {
+                               if (i < eclass->idepth)
+                                       iface = eclass->supertypes [i];
+                               else
+                                       iface = eclass->interfaces [i - eclass->idepth];
+                       }
+
+                       args = g_new0 (MonoType *, 1);
+                       args [0] = &iface->byval_arg;
+
+                       inflated = mono_class_bind_generic_parameters (
+                               &mono_defaults.generic_ilist_class->byval_arg, 1, args);
+
+                       class->interfaces [i] = mono_class_from_mono_type (inflated);
+               }
+       }
+
        if (eclass->generic_class)
                mono_class_init (eclass);
        if (!eclass->size_inited)
@@ -3550,7 +3693,12 @@ mono_class_data_size (MonoClass *klass)
        if (!klass->inited)
                mono_class_init (klass);
 
-       return klass->class_size;
+       /* in arrays, sizes.class_size is unioned with element_size
+        * and arrays have no static fields
+        */
+       if (klass->rank)
+               return 0;
+       return klass->sizes.class_size;
 }
 
 /*
@@ -3564,9 +3712,23 @@ mono_class_get_field_idx (MonoClass *class, int idx)
        mono_class_setup_fields_locking (class);
 
        while (class) {
-               if (class->field.count) {
-                       if ((idx >= class->field.first) && (idx < class->field.first + class->field.count)){
-                               return &class->fields [idx - class->field.first];
+               if (class->image->uncompressed_metadata) {
+                       /* 
+                        * class->field.first points to the FieldPtr table, while idx points into the
+                        * Field table, so we have to do a search.
+                        */
+                       const char *name = mono_metadata_string_heap (class->image, mono_metadata_decode_row_col (&class->image->tables [MONO_TABLE_FIELD], idx, MONO_FIELD_NAME));
+                       int i;
+
+                       for (i = 0; i < class->field.count; ++i)
+                               if (class->fields [i].name == name)
+                                       return &class->fields [i];
+                       g_assert_not_reached ();
+               } else {                        
+                       if (class->field.count) {
+                               if ((idx >= class->field.first) && (idx < class->field.first + class->field.count)){
+                                       return &class->fields [idx - class->field.first];
+                               }
                        }
                }
                class = class->parent;
@@ -3636,8 +3798,13 @@ mono_class_get_field_token (MonoClassField *field)
        mono_class_setup_fields_locking (klass);
        while (klass) {
                for (i = 0; i < klass->field.count; ++i) {
-                       if (&klass->fields [i] == field)
-                               return mono_metadata_make_token (MONO_TABLE_FIELD, klass->field.first + i + 1);
+                       if (&klass->fields [i] == field) {
+                               int idx = klass->field.first + i + 1;
+
+                               if (klass->image->uncompressed_metadata)
+                                       idx = mono_metadata_translate_token_index (klass->image, MONO_TABLE_FIELD, idx);
+                               return mono_metadata_make_token (MONO_TABLE_FIELD, idx);
+                       }
                }
                klass = klass->parent;
        }
@@ -3837,6 +4004,105 @@ mono_class_get (MonoImage *image, guint32 type_token)
        return mono_class_get_full (image, type_token, NULL);
 }
 
+/**
+ * mono_image_init_name_cache:
+ *
+ *  Initializes the class name cache stored in image->name_cache.
+ *
+ * LOCKING: Acquires the loader lock.
+ */
+void
+mono_image_init_name_cache (MonoImage *image)
+{
+       MonoTableInfo  *t = &image->tables [MONO_TABLE_TYPEDEF];
+       guint32 cols [MONO_TYPEDEF_SIZE];
+       const char *name;
+       const char *nspace;
+       guint32 i, visib, nspace_index;
+       GHashTable *name_cache2, *nspace_table;
+
+       mono_loader_lock ();
+
+       image->name_cache = g_hash_table_new (g_str_hash, g_str_equal);
+
+       if (image->dynamic) {
+               mono_loader_unlock ();
+               return;
+       }
+
+       /* Temporary hash table to avoid lookups in the nspace_table */
+       name_cache2 = g_hash_table_new (NULL, NULL);
+
+       for (i = 1; i <= t->rows; ++i) {
+               mono_metadata_decode_row (t, i - 1, cols, MONO_TYPEDEF_SIZE);
+               /* nested types are accessed from the nesting name */
+               visib = cols [MONO_TYPEDEF_FLAGS] & TYPE_ATTRIBUTE_VISIBILITY_MASK;
+               if (visib > TYPE_ATTRIBUTE_PUBLIC && visib <= TYPE_ATTRIBUTE_NESTED_ASSEMBLY)
+                       continue;
+               name = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
+               nspace = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
+
+               nspace_index = cols [MONO_TYPEDEF_NAMESPACE];
+               nspace_table = g_hash_table_lookup (name_cache2, GUINT_TO_POINTER (nspace_index));
+               if (!nspace_table) {
+                       nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
+                       g_hash_table_insert (image->name_cache, (char*)nspace, nspace_table);
+                       g_hash_table_insert (name_cache2, GUINT_TO_POINTER (nspace_index),
+                                                                nspace_table);
+               }
+               g_hash_table_insert (nspace_table, (char *) name, GUINT_TO_POINTER (i));
+       }
+
+       /* Load type names from EXPORTEDTYPES table */
+       {
+               MonoTableInfo  *t = &image->tables [MONO_TABLE_EXPORTEDTYPE];
+               guint32 cols [MONO_EXP_TYPE_SIZE];
+               int i;
+
+               for (i = 0; i < t->rows; ++i) {
+                       mono_metadata_decode_row (t, i, cols, MONO_EXP_TYPE_SIZE);
+                       name = mono_metadata_string_heap (image, cols [MONO_EXP_TYPE_NAME]);
+                       nspace = mono_metadata_string_heap (image, cols [MONO_EXP_TYPE_NAMESPACE]);
+
+                       nspace_index = cols [MONO_EXP_TYPE_NAMESPACE];
+                       nspace_table = g_hash_table_lookup (name_cache2, GUINT_TO_POINTER (nspace_index));
+                       if (!nspace_table) {
+                               nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
+                               g_hash_table_insert (image->name_cache, (char*)nspace, nspace_table);
+                               g_hash_table_insert (name_cache2, GUINT_TO_POINTER (nspace_index),
+                                                                        nspace_table);
+                       }
+                       g_hash_table_insert (nspace_table, (char *) name, GUINT_TO_POINTER (mono_metadata_make_token (MONO_TABLE_EXPORTEDTYPE, i + 1)));
+               }
+       }
+
+       g_hash_table_destroy (name_cache2);
+
+       mono_loader_unlock ();
+}
+
+void
+mono_image_add_to_name_cache (MonoImage *image, const char *nspace, 
+                                                         const char *name, guint32 index)
+{
+       GHashTable *nspace_table;
+       GHashTable *name_cache;
+
+       mono_loader_lock ();
+
+       if (!image->name_cache)
+               mono_image_init_name_cache (image);
+
+       name_cache = image->name_cache;
+       if (!(nspace_table = g_hash_table_lookup (name_cache, nspace))) {
+               nspace_table = g_hash_table_new (g_str_hash, g_str_equal);
+               g_hash_table_insert (name_cache, (char *)nspace, (char *)nspace_table);
+       }
+       g_hash_table_insert (nspace_table, (char *) name, GUINT_TO_POINTER (index));
+
+       mono_loader_unlock ();
+}
+
 typedef struct {
        gconstpointer key;
        gpointer value;
@@ -3861,12 +4127,6 @@ find_nocase (gpointer key, gpointer value, gpointer user_data)
  * Obtains a MonoClass with a given namespace and a given name which
  * is located in the given MonoImage.   The namespace and name
  * lookups are case insensitive.
- *
- * You can also pass @NULL to the image, and that will lookup for
- * a type with the given namespace and name in all of the loaded
- * assemblies: notice that since there might be a name clash in this
- * case, passing @NULL is not encouraged if you need a precise type.
- *
  */
 MonoClass *
 mono_class_from_name_case (MonoImage *image, const char* name_space, const char *name)
@@ -3883,6 +4143,9 @@ mono_class_from_name_case (MonoImage *image, const char* name_space, const char
 
                mono_loader_lock ();
 
+               if (!image->name_cache)
+                       mono_image_init_name_cache (image);
+
                user_data.key = name_space;
                user_data.value = NULL;
                g_hash_table_foreach (image->name_cache, find_nocase, &user_data);
@@ -3953,12 +4216,6 @@ return_nested_in (MonoClass *class, char *nested) {
  *
  * Obtains a MonoClass with a given namespace and a given name which
  * is located in the given MonoImage.   
- *
- * You can also pass `NULL' to the image, and that will lookup for
- * a type with the given namespace and name in all of the loaded
- * assemblies: notice that since there might be a name clash in this
- * case, passing NULL is not encouraged if you need a precise type.
- *
  */
 MonoClass *
 mono_class_from_name (MonoImage *image, const char* name_space, const char *name)
@@ -3981,8 +4238,21 @@ mono_class_from_name (MonoImage *image, const char* name_space, const char *name
                name = buf;
        }
 
+       if (get_class_from_name) {
+               gboolean res = get_class_from_name (image, name_space, name, &class);
+               if (res) {
+                       if (nested)
+                               return class ? return_nested_in (class, nested) : NULL;
+                       else
+                               return class;
+               }
+       }
+
        mono_loader_lock ();
 
+       if (!image->name_cache)
+               mono_image_init_name_cache (image);
+
        nspace_table = g_hash_table_lookup (image->name_cache, name_space);
 
        if (nspace_table)
@@ -4251,7 +4521,8 @@ handle_enum:
 gint32
 mono_array_element_size (MonoClass *ac)
 {
-       return mono_class_array_element_size (ac->element_class);
+       g_assert (ac->rank);
+       return ac->sizes.element_size;
 }
 
 gpointer
@@ -4375,6 +4646,12 @@ mono_class_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res)
                return get_cached_class_info (klass, res);
 }
 
+void
+mono_install_get_class_from_name (MonoGetClassFromName func)
+{
+       get_class_from_name = func;
+}
+
 MonoImage*
 mono_class_get_image (MonoClass *klass)
 {
@@ -4519,6 +4796,20 @@ mono_class_get_type (MonoClass *klass)
        return &klass->byval_arg;
 }
 
+/**
+ * mono_class_get_type_token
+ * @klass: the MonoClass to act on
+ *
+ * This method returns type token for the class.
+ *
+ * Returns: the type token for the class.
+ */
+guint32
+mono_class_get_type_token (MonoClass *klass)
+{
+  return klass->type_token;
+}
+
 /**
  * mono_class_get_byref_type:
  * @klass: the MonoClass to act on
@@ -4864,6 +5155,19 @@ mono_field_get_flags (MonoClassField *field)
        return field->type->attrs;
 }
 
+/**
+ * mono_field_get_data;
+ * @field: the MonoClassField to act on
+ *
+ * Returns: pointer to the metadata constant value or to the field
+ * data if it has an RVA flag.
+ */
+const char *
+mono_field_get_data  (MonoClassField *field)
+{
+  return field->data;
+}
+
 /**
  * mono_property_get_name: 
  * @prop: the MonoProperty to act on
@@ -5055,7 +5359,8 @@ mono_class_get_method_from_name_flags (MonoClass *klass, const char *name, int p
                        guint32 cols [MONO_METHOD_SIZE];
                        MonoMethod *method;
 
-                       mono_metadata_decode_row (&klass->image->tables [MONO_TABLE_METHOD], klass->method.first + i, cols, MONO_METHOD_SIZE);
+                       /* class->method.first points into the methodptr table */
+                       mono_metadata_decode_table_row (klass->image, MONO_TABLE_METHOD, klass->method.first + i, cols, MONO_METHOD_SIZE);
 
                        if (!strcmp (mono_metadata_string_heap (klass->image, cols [MONO_METHOD_NAME]), name)) {
                                method = mono_get_method (klass->image, MONO_TOKEN_METHOD_DEF | (klass->method.first + i + 1), klass);
@@ -5148,9 +5453,17 @@ mono_class_get_exception_for_failure (MonoClass *klass)
                mono_runtime_invoke (secman->inheritsecurityexception, NULL, args, &exc);
                return (MonoException*) exc;
        }
-       case MONO_EXCEPTION_TYPE_LOAD:
-               return mono_exception_from_name (mono_defaults.corlib, "System", "TypeLoadException");
-
+       case MONO_EXCEPTION_TYPE_LOAD: {
+               MonoString *name;
+               MonoException *ex;
+               char *str = mono_type_get_full_name (klass);
+               char *astr = klass->image->assembly? mono_stringify_assembly_name (&klass->image->assembly->aname): NULL;
+               name = mono_string_new (mono_domain_get (), str);
+               g_free (str);
+               ex = mono_get_exception_type_load (name, astr);
+               g_free (astr);
+               return ex;
+       }
        default: {
                MonoLoaderError *error;
                MonoException *ex;