+
+/**
+ * mono_object_isinst:
+ * @obj: an object
+ * @klass: a pointer to a class
+ *
+ * Returns: @obj if @obj is derived from @klass
+ */
+MonoObject *
+mono_object_isinst (MonoObject *obj, MonoClass *klass)
+{
+ MonoVTable *vt;
+ MonoClass *oklass;
+
+ if (!obj)
+ return NULL;
+
+ vt = obj->vtable;
+ oklass = vt->klass;
+
+ if (!klass->inited)
+ mono_class_init (klass);
+
+ if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
+ if ((klass->interface_id <= oklass->max_interface_id) &&
+ vt->interface_offsets [klass->interface_id])
+ return obj;
+ } else {
+ if (oklass == mono_defaults.transparent_proxy_class) {
+ /* fixme: add check for IRemotingTypeInfo */
+ MonoRealProxy *rp = ((MonoTransparentProxy *)obj)->rp;
+ MonoType *type;
+ type = ((MonoReflectionType *)rp->class_to_proxy)->type;
+ oklass = mono_class_from_mono_type (type);
+ }
+ if (oklass->rank && oklass->rank == klass->rank) {
+ if ((oklass->element_class->baseval - klass->element_class->baseval) <=
+ klass->element_class->diffval)
+ return obj;
+ } else if ((oklass->baseval - klass->baseval) <= klass->diffval)
+ return obj;
+ }
+
+ return NULL;
+}
+
+static MonoString*
+mono_string_is_interned_lookup (MonoString *str, int insert)
+{
+ MonoGHashTable *ldstr_table;
+ MonoString *res;
+ MonoDomain *domain;
+ char *ins = g_malloc (4 + str->length * 2);
+ char *p;
+ int bloblen;
+
+ /* Encode the length */
+ p = ins;
+ mono_metadata_encode_value (2 * str->length, p, &p);
+ bloblen = p - ins;
+ p = ins;
+ mono_metadata_encode_value (bloblen + 2 * str->length, p, &p);
+ bloblen = (p - ins) + 2 * str->length;
+ /*
+ * ins is stored in the hash table as a key and needs to have the same
+ * representation as in the metadata: we swap the character bytes on big
+ * endian boxes.
+ */
+#if G_BYTE_ORDER != G_LITTLE_ENDIAN
+ {
+ int i;
+ char *p2 = mono_array_addr (str->c_str, char, 0);
+ for (i = 0; i < str->length; ++i) {
+ *p++ = p2 [1];
+ *p++ = p2 [0];
+ p2 += 2;
+ }
+ }
+#else
+ memcpy (p, str->c_str->vector, str->length * 2);
+#endif
+ domain = ((MonoObject *)str)->vtable->domain;
+ ldstr_table = domain->ldstr_table;
+ mono_domain_lock (domain);
+ if ((res = mono_g_hash_table_lookup (ldstr_table, ins))) {
+ mono_domain_unlock (domain);
+ g_free (ins);
+ return res;
+ }
+ if (insert) {
+ mono_g_hash_table_insert (ldstr_table, ins, str);
+ mono_domain_unlock (domain);
+ return str;
+ }
+ mono_domain_unlock (domain);
+ g_free (ins);
+ return NULL;
+}
+
+MonoString*
+mono_string_is_interned (MonoString *o)
+{
+ return mono_string_is_interned_lookup (o, FALSE);
+}
+
+MonoString*
+mono_string_intern (MonoString *str)
+{
+ return mono_string_is_interned_lookup (str, TRUE);
+}
+
+/*
+ * mono_ldstr:
+ * @domain: the domain where the string will be used.
+ * @image: a metadata context
+ * @idx: index into the user string table.
+ *
+ * Implementation for the ldstr opcode.
+ */
+MonoString*
+mono_ldstr (MonoDomain *domain, MonoImage *image, guint32 idx)
+{
+ const char *str, *sig;
+ MonoString *o;
+ size_t len2;
+
+ sig = str = mono_metadata_user_string (image, idx);
+
+ mono_domain_lock (domain);
+ if ((o = mono_g_hash_table_lookup (domain->ldstr_table, sig))) {
+ mono_domain_unlock (domain);
+ return o;
+ }
+
+ len2 = mono_metadata_decode_blob_size (str, &str);
+ len2 >>= 1;
+
+ o = mono_string_new_utf16 (domain, (guint16*)str, len2);
+#if G_BYTE_ORDER != G_LITTLE_ENDIAN
+ {
+ int i;
+ guint16 *p2 = (guint16*)mono_array_addr (o->c_str, guint16, 0);
+ for (i = 0; i < len2; ++i) {
+ *p2 = GUINT16_FROM_LE (*p2);
+ ++p2;
+ }
+ }
+#endif
+ mono_g_hash_table_insert (domain->ldstr_table, (gpointer)sig, o);
+ mono_domain_unlock (domain);
+
+ return o;
+}
+
+/*
+ * mono_string_to_utf8:
+ * @s: a System.String
+ *
+ * Return the UTF8 representation for @s.
+ * the resulting buffer nedds to be freed with g_free().
+ */
+char *
+mono_string_to_utf8 (MonoString *s)
+{
+ char *as, *vector;
+ GError *error = NULL;
+
+ g_assert (s != NULL);
+
+ if (!s->length || !s->c_str)
+ return g_strdup ("");
+
+ vector = (char*)s->c_str->vector;
+
+ g_assert (vector != NULL);
+
+ as = g_utf16_to_utf8 ((gunichar2 *)vector, s->length, NULL, NULL, &error);
+ if (error)
+ g_warning (error->message);
+
+ return as;
+}
+
+/*
+ * mono_string_to_utf16:
+ * @s: a MonoString
+ *
+ * Return an null-terminated array of the utf-16 chars
+ * contained in @s. The result must be freed with g_free().
+ * This is a temporary helper until our string implementation
+ * is reworked to always include the null terminating char.
+ */
+gunichar2 *
+mono_string_to_utf16 (MonoString *s)
+{
+ char *as;
+
+ g_assert (s != NULL);
+
+ as = g_malloc ((s->length * 2) + 2);
+ as [(s->length * 2)] = '\0';
+ as [(s->length * 2) + 1] = '\0';
+
+ if (!s->length || !s->c_str) {
+ return (gunichar2 *)(as);
+ }
+
+ memcpy (as, mono_string_chars(s), s->length * 2);
+
+ return (gunichar2 *)(as);
+}
+
+static void
+default_ex_handler (MonoException *ex)
+{
+ MonoObject *o = (MonoObject*)ex;
+ g_error ("Exception %s.%s raised in C code", o->vtable->klass->name_space, o->vtable->klass->name);
+}
+
+static MonoExceptionFunc ex_handler = default_ex_handler;
+
+void
+mono_install_handler (MonoExceptionFunc func)
+{
+ ex_handler = func? func: default_ex_handler;
+}
+
+/*
+ * mono_raise_exception:
+ * @ex: exception object
+ *
+ * Signal the runtime that the exception @ex has been raised in unmanaged code.
+ */
+void
+mono_raise_exception (MonoException *ex)
+{
+ ex_handler (ex);
+}
+
+MonoWaitHandle *
+mono_wait_handle_new (MonoDomain *domain, HANDLE handle)
+{
+ MonoWaitHandle *res;
+
+ res = (MonoWaitHandle *)mono_object_new (domain, mono_defaults.waithandle_class);
+
+ res->handle = handle;
+
+ return res;
+}
+
+MonoAsyncResult *
+mono_async_result_new (MonoDomain *domain, HANDLE handle, MonoObject *state, gpointer data)
+{
+ MonoAsyncResult *res;
+
+ res = (MonoAsyncResult *)mono_object_new (domain, mono_defaults.asyncresult_class);
+
+ res->data = data;
+ res->async_state = state;
+ res->handle = (MonoObject *)mono_wait_handle_new (domain, handle);
+ res->sync_completed = FALSE;
+ res->completed = FALSE;
+
+ return res;
+}
+
+void
+mono_message_init (MonoDomain *domain,
+ MonoMethodMessage *this,
+ MonoReflectionMethod *method,
+ MonoArray *out_args)
+{
+ MonoMethodSignature *sig = method->method->signature;
+ MonoString *name;
+ int i, j;
+ char **names;
+ guint8 arg_type;
+
+ this->method = method;
+
+ this->args = mono_array_new (domain, mono_defaults.object_class, sig->param_count);
+ this->arg_types = mono_array_new (domain, mono_defaults.byte_class, sig->param_count);
+
+ names = g_new (char *, sig->param_count);
+ mono_method_get_param_names (method->method, (const char **) names);
+ this->names = mono_array_new (domain, mono_defaults.string_class, sig->param_count);
+
+ for (i = 0; i < sig->param_count; i++) {
+ name = mono_string_new (domain, names [i]);
+ mono_array_set (this->names, gpointer, i, name);
+ }
+
+ g_free (names);
+
+ for (i = 0, j = 0; i < sig->param_count; i++) {
+
+ if (sig->params [i]->byref) {
+ if (out_args) {
+ gpointer arg = mono_array_get (out_args, gpointer, j);
+ mono_array_set (this->args, gpointer, i, arg);
+ j++;
+ }
+ arg_type = 2;
+ if (sig->params [i]->attrs & PARAM_ATTRIBUTE_IN)
+ arg_type |= 1;
+ } else {
+ arg_type = 1;
+ }
+
+ mono_array_set (this->arg_types, guint8, i, arg_type);
+ }
+}
+
+/**
+ * mono_remoting_invoke:
+ * @real_proxy: pointer to a RealProxy object
+ * @msg: The MonoMethodMessage to execute
+ * @exc: used to store exceptions
+ * @out_args: used to store output arguments
+ *
+ * This is used to call RealProxy::Invoke(). RealProxy::Invoke() returns an
+ * IMessage interface and it is not trivial to extract results from there. So
+ * we call an helper method PrivateInvoke instead of calling
+ * RealProxy::Invoke() directly.
+ *
+ * Returns: the result object.
+ */
+MonoObject *
+mono_remoting_invoke (MonoObject *real_proxy, MonoMethodMessage *msg,
+ MonoObject **exc, MonoArray **out_args)
+{
+ static MonoMethod *im = NULL;
+ gpointer pa [4];
+
+ //static MonoObject *(*invoke) (gpointer, gpointer, MonoObject **, MonoArray **) = NULL;
+
+ /* fixme: make this domain dependent */
+ if (!im) {
+ MonoClass *klass;
+ int i;
+
+ klass = mono_defaults.real_proxy_class;
+
+ for (i = 0; i < klass->method.count; ++i) {
+ if (!strcmp ("PrivateInvoke", klass->methods [i]->name) &&
+ klass->methods [i]->signature->param_count == 4) {
+ im = klass->methods [i];
+ break;
+ }
+ }
+
+ g_assert (im);
+ }
+
+ pa [0] = real_proxy;
+ pa [1] = msg;
+ pa [2] = exc;
+ pa [3] = out_args;
+
+ return mono_runtime_invoke (im, NULL, pa);
+}
+
+MonoObject *
+mono_message_invoke (MonoObject *target, MonoMethodMessage *msg,
+ MonoObject **exc, MonoArray **out_args)
+{
+ if (target && target->vtable->klass == mono_defaults.transparent_proxy_class) {
+
+ return mono_remoting_invoke ((MonoObject *)((MonoTransparentProxy *)target)->rp,
+ msg, exc, out_args);
+
+ } else {
+ MonoDomain *domain = mono_domain_get ();
+ MonoMethod *method = msg->method->method;
+ MonoMethodSignature *sig = method->signature;
+ MonoObject *res;
+ int i, j, outarg_count = 0;
+
+ for (i = 0; i < sig->param_count; i++) {
+ if (sig->params [i]->byref)
+ outarg_count++;
+ }
+
+ *out_args = mono_array_new (domain, mono_defaults.object_class, outarg_count);
+ *exc = NULL;
+
+ for (i = 0, j = 0; i < sig->param_count; i++) {
+ if (sig->params [i]->byref) {
+ gpointer arg;
+ arg = mono_array_get (msg->args, gpointer, i);
+ mono_array_set (*out_args, gpointer, j, arg);
+ j++;
+ }
+ }
+
+ return mono_runtime_invoke_array (method, target, msg->args);
+ }
+}
+
+
+