2 * remoting.c: Remoting support
4 * Copyright 2002-2003 Ximian, Inc (http://www.ximian.com)
5 * Copyright 2004-2009 Novell, Inc (http://www.novell.com)
6 * Copyright 2011-2014 Xamarin, Inc (http://www.xamarin.com)
12 #include "mono/metadata/remoting.h"
13 #include "mono/metadata/marshal.h"
14 #include "mono/metadata/abi-details.h"
15 #include "mono/metadata/cominterop.h"
16 #include "mono/metadata/tabledefs.h"
17 #include "mono/metadata/exception.h"
18 #include "mono/metadata/debug-helpers.h"
21 MONO_MARSHAL_NONE, /* No marshalling needed */
22 MONO_MARSHAL_COPY, /* Can be copied by value to the new domain */
23 MONO_MARSHAL_COPY_OUT, /* out parameter that needs to be copied back to the original instance */
24 MONO_MARSHAL_SERIALIZE /* Value needs to be serialized into the new domain */
25 } MonoXDomainMarshalType;
27 #ifndef DISABLE_REMOTING
29 #define OPDEF(a,b,c,d,e,f,g,h,i,j) \
33 #include "mono/cil/opcode.def"
38 struct _MonoRemotingMethods {
40 MonoMethod *invoke_with_check;
41 MonoMethod *xdomain_invoke;
42 MonoMethod *xdomain_dispatch;
45 typedef struct _MonoRemotingMethods MonoRemotingMethods;
48 mono_remoting_wrapper (MonoMethod *method, gpointer *params);
51 mono_marshal_set_domain_by_id (gint32 id, MonoBoolean push);
54 mono_marshal_check_domain_image (gint32 domain_id, MonoImage *image);
57 mono_upgrade_remote_class_wrapper (MonoReflectionType *rtype, MonoTransparentProxy *tproxy);
59 static MonoXDomainMarshalType
60 mono_get_xdomain_marshal_type (MonoType *t);
63 mono_marshal_xdomain_copy_out_value (MonoObject *src, MonoObject *dst);
65 static MonoReflectionType *
66 type_from_handle (MonoType *handle);
68 static mono_mutex_t remoting_mutex;
69 static gboolean remoting_mutex_inited;
71 static MonoClass *byte_array_class;
72 static MonoMethod *method_rs_serialize, *method_rs_deserialize, *method_exc_fixexc, *method_rs_appdomain_target;
73 static MonoMethod *method_set_call_context, *method_needs_context_sink, *method_rs_serialize_exc;
76 register_icall (gpointer func, const char *name, const char *sigstr, gboolean save)
78 MonoMethodSignature *sig = mono_create_icall_signature (sigstr);
80 mono_register_jit_icall (func, name, sig, save);
86 g_assert (remoting_mutex_inited);
87 mono_mutex_lock (&remoting_mutex);
91 remoting_unlock (void)
93 g_assert (remoting_mutex_inited);
94 mono_mutex_unlock (&remoting_mutex);
98 * Return the hash table pointed to by VAR, lazily creating it if neccesary.
101 get_cache (GHashTable **var, GHashFunc hash_func, GCompareFunc equal_func)
107 g_hash_table_new (hash_func, equal_func);
108 mono_memory_barrier ();
117 get_cache_full (GHashTable **var, GHashFunc hash_func, GCompareFunc equal_func, GDestroyNotify key_destroy_func, GDestroyNotify value_destroy_func)
123 g_hash_table_new_full (hash_func, equal_func, key_destroy_func, value_destroy_func);
124 mono_memory_barrier ();
133 mono_remoting_init (void)
135 mono_mutex_init (&remoting_mutex);
136 remoting_mutex_inited = TRUE;
140 mono_remoting_marshal_init (void)
144 static gboolean module_initialized = FALSE;
145 static gboolean icalls_registered = FALSE;
147 if (module_initialized)
150 klass = mono_class_from_name (mono_defaults.corlib, "System.Runtime.Remoting", "RemotingServices");
151 method_rs_serialize = mono_class_get_method_from_name (klass, "SerializeCallData", -1);
152 method_rs_deserialize = mono_class_get_method_from_name (klass, "DeserializeCallData", -1);
153 method_rs_serialize_exc = mono_class_get_method_from_name (klass, "SerializeExceptionData", -1);
155 klass = mono_defaults.real_proxy_class;
156 method_rs_appdomain_target = mono_class_get_method_from_name (klass, "GetAppDomainTarget", -1);
158 klass = mono_defaults.exception_class;
159 method_exc_fixexc = mono_class_get_method_from_name (klass, "FixRemotingException", -1);
161 byte_array_class = mono_array_class_get (mono_defaults.byte_class, 1);
163 klass = mono_class_from_name (mono_defaults.corlib, "System.Runtime.Remoting.Messaging", "CallContext");
164 method_set_call_context = mono_class_get_method_from_name (klass, "SetCurrentCallContext", -1);
166 klass = mono_class_from_name (mono_defaults.corlib, "System.Runtime.Remoting.Contexts", "Context");
167 method_needs_context_sink = mono_class_get_method_from_name (klass, "get_NeedsContextSink", -1);
171 if (!icalls_registered) {
172 register_icall (type_from_handle, "type_from_handle", "object ptr", FALSE);
173 register_icall (mono_marshal_set_domain_by_id, "mono_marshal_set_domain_by_id", "int32 int32 int32", FALSE);
174 register_icall (mono_marshal_check_domain_image, "mono_marshal_check_domain_image", "int32 int32 ptr", FALSE);
175 register_icall (mono_marshal_xdomain_copy_value, "mono_marshal_xdomain_copy_value", "object object", FALSE);
176 register_icall (mono_marshal_xdomain_copy_out_value, "mono_marshal_xdomain_copy_out_value", "void object object", FALSE);
177 register_icall (mono_remoting_wrapper, "mono_remoting_wrapper", "object ptr ptr", FALSE);
178 register_icall (mono_upgrade_remote_class_wrapper, "mono_upgrade_remote_class_wrapper", "void object object", FALSE);
181 icalls_registered = TRUE;
183 mono_loader_unlock ();
185 module_initialized = TRUE;
188 static MonoReflectionType *
189 type_from_handle (MonoType *handle)
191 MonoDomain *domain = mono_domain_get ();
192 MonoClass *klass = mono_class_from_mono_type (handle);
194 mono_class_init (klass);
195 return mono_type_get_object (domain, handle);
200 mono_mb_emit_proxy_check (MonoMethodBuilder *mb, int branch_code)
203 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoObject, vtable));
204 mono_mb_emit_byte (mb, CEE_LDIND_I);
205 mono_mb_emit_icon (mb, MONO_STRUCT_OFFSET (MonoVTable, klass));
206 mono_mb_emit_byte (mb, CEE_ADD);
207 mono_mb_emit_byte (mb, CEE_LDIND_I);
208 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
209 mono_mb_emit_byte (mb, CEE_MONO_CLASSCONST);
210 mono_mb_emit_i4 (mb, mono_mb_add_data (mb, mono_defaults.transparent_proxy_class));
211 pos = mono_mb_emit_branch (mb, branch_code);
216 mono_mb_emit_xdomain_check (MonoMethodBuilder *mb, int branch_code)
219 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoTransparentProxy, rp));
220 mono_mb_emit_byte (mb, CEE_LDIND_REF);
221 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoRealProxy, target_domain_id));
222 mono_mb_emit_byte (mb, CEE_LDIND_I4);
223 mono_mb_emit_icon (mb, -1);
224 pos = mono_mb_emit_branch (mb, branch_code);
229 mono_mb_emit_contextbound_check (MonoMethodBuilder *mb, int branch_code)
231 static int offset = -1;
235 mono_marshal_find_bitfield_offset (MonoClass, contextbound, &offset, &mask);
237 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoTransparentProxy, remote_class));
238 mono_mb_emit_byte (mb, CEE_LDIND_REF);
239 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoRemoteClass, proxy_class));
240 mono_mb_emit_byte (mb, CEE_LDIND_REF);
241 mono_mb_emit_ldflda (mb, offset);
242 mono_mb_emit_byte (mb, CEE_LDIND_U1);
243 mono_mb_emit_icon (mb, mask);
244 mono_mb_emit_byte (mb, CEE_AND);
245 mono_mb_emit_icon (mb, 0);
246 return mono_mb_emit_branch (mb, branch_code);
248 #endif /* !DISABLE_JIT */
250 static inline MonoMethod*
251 mono_marshal_remoting_find_in_cache (MonoMethod *method, int wrapper_type)
253 MonoMethod *res = NULL;
254 MonoRemotingMethods *wrps;
256 mono_marshal_lock_internal ();
257 if (method->klass->image->remoting_invoke_cache)
258 wrps = g_hash_table_lookup (method->klass->image->remoting_invoke_cache, method);
263 switch (wrapper_type) {
264 case MONO_WRAPPER_REMOTING_INVOKE: res = wrps->invoke; break;
265 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK: res = wrps->invoke_with_check; break;
266 case MONO_WRAPPER_XDOMAIN_INVOKE: res = wrps->xdomain_invoke; break;
267 case MONO_WRAPPER_XDOMAIN_DISPATCH: res = wrps->xdomain_dispatch; break;
271 /* it is important to do the unlock after the load from wrps, since in
272 * mono_remoting_mb_create_and_cache () we drop the marshal lock to be able
273 * to take the loader lock and some other thread may set the fields.
275 mono_marshal_unlock_internal ();
279 /* Create the method from the builder and place it in the cache */
280 static inline MonoMethod*
281 mono_remoting_mb_create_and_cache (MonoMethod *key, MonoMethodBuilder *mb,
282 MonoMethodSignature *sig, int max_stack)
284 MonoMethod **res = NULL;
285 MonoRemotingMethods *wrps;
286 GHashTable *cache = get_cache_full (&key->klass->image->remoting_invoke_cache, mono_aligned_addr_hash, NULL, NULL, g_free);
288 mono_marshal_lock_internal ();
289 wrps = g_hash_table_lookup (cache, key);
291 wrps = g_new0 (MonoRemotingMethods, 1);
292 g_hash_table_insert (cache, key, wrps);
295 switch (mb->method->wrapper_type) {
296 case MONO_WRAPPER_REMOTING_INVOKE: res = &wrps->invoke; break;
297 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK: res = &wrps->invoke_with_check; break;
298 case MONO_WRAPPER_XDOMAIN_INVOKE: res = &wrps->xdomain_invoke; break;
299 case MONO_WRAPPER_XDOMAIN_DISPATCH: res = &wrps->xdomain_dispatch; break;
300 default: g_assert_not_reached (); break;
302 mono_marshal_unlock_internal ();
306 newm = mono_mb_create_method (mb, sig, max_stack);
308 mono_marshal_lock_internal ();
311 mono_marshal_set_wrapper_info (*res, key);
312 mono_marshal_unlock_internal ();
314 mono_marshal_unlock_internal ();
315 mono_free_method (newm);
323 mono_remoting_wrapper (MonoMethod *method, gpointer *params)
325 MonoMethodMessage *msg;
326 MonoTransparentProxy *this;
327 MonoObject *res, *exc;
330 this = *((MonoTransparentProxy **)params [0]);
333 g_assert (((MonoObject *)this)->vtable->klass == mono_defaults.transparent_proxy_class);
335 /* skip the this pointer */
338 if (mono_class_is_contextbound (this->remote_class->proxy_class) && this->rp->context == (MonoObject *) mono_context_get ())
341 MonoMethodSignature *sig = mono_method_signature (method);
342 int count = sig->param_count;
343 gpointer* mparams = (gpointer*) alloca(count*sizeof(gpointer));
345 for (i=0; i<count; i++) {
346 MonoClass *class = mono_class_from_mono_type (sig->params [i]);
347 if (class->valuetype) {
348 if (sig->params [i]->byref) {
349 mparams[i] = *((gpointer *)params [i]);
351 /* runtime_invoke expects a boxed instance */
352 if (mono_class_is_nullable (mono_class_from_mono_type (sig->params [i])))
353 mparams[i] = mono_nullable_box (params [i], class);
355 mparams[i] = params [i];
358 mparams[i] = *((gpointer**)params [i]);
362 return mono_runtime_invoke (method, method->klass->valuetype? mono_object_unbox ((MonoObject*)this): this, mparams, NULL);
365 msg = mono_method_call_message_new (method, params, NULL, NULL, NULL);
367 res = mono_remoting_invoke ((MonoObject *)this->rp, msg, &exc, &out_args);
370 mono_raise_exception ((MonoException *)exc);
372 mono_method_return_message_restore (method, params, out_args);
378 mono_marshal_get_remoting_invoke (MonoMethod *method)
380 MonoMethodSignature *sig;
381 MonoMethodBuilder *mb;
387 if (method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE || method->wrapper_type == MONO_WRAPPER_XDOMAIN_INVOKE)
390 /* this seems to be the best plase to put this, as all remoting invokes seem to get filtered through here */
392 if (mono_class_is_com_object (method->klass) || method->klass == mono_class_get_com_object_class ()) {
393 MonoVTable *vtable = mono_class_vtable (mono_domain_get (), method->klass);
394 g_assert (vtable); /*FIXME do proper error handling*/
396 if (!mono_vtable_is_remote (vtable)) {
397 return mono_cominterop_get_invoke (method);
402 sig = mono_signature_no_pinvoke (method);
404 /* we cant remote methods without this pointer */
408 if ((res = mono_marshal_remoting_find_in_cache (method, MONO_WRAPPER_REMOTING_INVOKE)))
411 mono_remoting_marshal_init ();
413 mb = mono_mb_new (method->klass, method->name, MONO_WRAPPER_REMOTING_INVOKE);
416 mb->method->save_lmf = 1;
418 params_var = mono_mb_emit_save_args (mb, sig, TRUE);
420 mono_mb_emit_ptr (mb, method);
421 mono_mb_emit_ldloc (mb, params_var);
422 mono_mb_emit_icall (mb, mono_remoting_wrapper);
423 mono_marshal_emit_thread_interrupt_checkpoint (mb);
425 if (sig->ret->type == MONO_TYPE_VOID) {
426 mono_mb_emit_byte (mb, CEE_POP);
427 mono_mb_emit_byte (mb, CEE_RET);
429 mono_mb_emit_restore_result (mb, sig->ret);
433 res = mono_remoting_mb_create_and_cache (method, mb, sig, sig->param_count + 16);
439 /* mono_marshal_xdomain_copy_out_value()
440 * Copies the contents of the src instance into the dst instance. src and dst
441 * must have the same type, and if they are arrays, the same size.
444 mono_marshal_xdomain_copy_out_value (MonoObject *src, MonoObject *dst)
446 if (src == NULL || dst == NULL) return;
448 g_assert (mono_object_class (src) == mono_object_class (dst));
450 switch (mono_object_class (src)->byval_arg.type) {
451 case MONO_TYPE_ARRAY:
452 case MONO_TYPE_SZARRAY: {
453 int mt = mono_get_xdomain_marshal_type (&(mono_object_class (src)->element_class->byval_arg));
454 if (mt == MONO_MARSHAL_SERIALIZE) return;
455 if (mt == MONO_MARSHAL_COPY) {
456 int i, len = mono_array_length ((MonoArray *)dst);
457 for (i = 0; i < len; i++) {
458 MonoObject *item = mono_array_get ((MonoArray *)src, gpointer, i);
459 mono_array_setref ((MonoArray *)dst, i, mono_marshal_xdomain_copy_value (item));
462 mono_array_full_copy ((MonoArray *)src, (MonoArray *)dst);
468 if (mono_object_class (src) == mono_defaults.stringbuilder_class) {
469 MonoStringBuilder *src_sb = (MonoStringBuilder *) src;
470 MonoStringBuilder *dst_sb = (MonoStringBuilder *) dst;
472 MONO_OBJECT_SETREF (dst_sb, str, mono_string_new_utf16 (mono_object_domain (dst), mono_string_chars (src_sb->str), mono_string_length (src_sb->str)));
473 dst_sb->cached_str = NULL;
474 dst_sb->length = src_sb->length;
479 #if !defined (DISABLE_JIT)
481 mono_marshal_emit_xdomain_copy_value (MonoMethodBuilder *mb, MonoClass *pclass)
483 mono_mb_emit_icall (mb, mono_marshal_xdomain_copy_value);
484 mono_mb_emit_op (mb, CEE_CASTCLASS, pclass);
488 mono_marshal_emit_xdomain_copy_out_value (MonoMethodBuilder *mb, MonoClass *pclass)
490 mono_mb_emit_icall (mb, mono_marshal_xdomain_copy_out_value);
494 /* mono_marshal_supports_fast_xdomain()
495 * Returns TRUE if the method can use the fast xdomain wrapper.
498 mono_marshal_supports_fast_xdomain (MonoMethod *method)
500 return !mono_class_is_contextbound (method->klass) &&
501 !((method->flags & METHOD_ATTRIBUTE_SPECIAL_NAME) && (strcmp (".ctor", method->name) == 0));
505 mono_marshal_set_domain_by_id (gint32 id, MonoBoolean push)
507 MonoDomain *current_domain = mono_domain_get ();
508 MonoDomain *domain = mono_domain_get_by_id (id);
510 if (!domain || !mono_domain_set (domain, FALSE))
511 mono_raise_exception (mono_get_exception_appdomain_unloaded ());
514 mono_thread_push_appdomain_ref (domain);
516 mono_thread_pop_appdomain_ref ();
518 return current_domain->domain_id;
521 #if !defined (DISABLE_JIT)
523 mono_marshal_emit_switch_domain (MonoMethodBuilder *mb)
525 mono_mb_emit_icall (mb, mono_marshal_set_domain_by_id);
528 /* mono_marshal_emit_load_domain_method ()
529 * Loads into the stack a pointer to the code of the provided method for
530 * the current domain.
533 mono_marshal_emit_load_domain_method (MonoMethodBuilder *mb, MonoMethod *method)
535 /* We need a pointer to the method for the running domain (not the domain
536 * that compiles the method).
538 mono_mb_emit_ptr (mb, method);
539 mono_mb_emit_icall (mb, mono_compile_method);
543 /* mono_marshal_check_domain_image ()
544 * Returns TRUE if the image is loaded in the specified
545 * application domain.
548 mono_marshal_check_domain_image (gint32 domain_id, MonoImage *image)
553 MonoDomain *domain = mono_domain_get_by_id (domain_id);
557 mono_domain_assemblies_lock (domain);
558 for (tmp = domain->domain_assemblies; tmp; tmp = tmp->next) {
560 if (ass->image == image)
563 mono_domain_assemblies_unlock (domain);
568 /* mono_marshal_get_xappdomain_dispatch ()
569 * Generates a method that dispatches a method call from another domain into
570 * the current domain.
573 mono_marshal_get_xappdomain_dispatch (MonoMethod *method, int *marshal_types, int complex_count, int complex_out_count, int ret_marshal_type)
575 MonoMethodSignature *sig, *csig;
576 MonoMethodBuilder *mb;
578 int i, j, param_index, copy_locals_base;
579 MonoClass *ret_class = NULL;
580 int loc_array=0, loc_return=0, loc_serialized_exc=0;
581 MonoExceptionClause *main_clause;
583 gboolean copy_return;
585 if ((res = mono_marshal_remoting_find_in_cache (method, MONO_WRAPPER_XDOMAIN_DISPATCH)))
588 sig = mono_method_signature (method);
589 copy_return = (sig->ret->type != MONO_TYPE_VOID && ret_marshal_type != MONO_MARSHAL_SERIALIZE);
592 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 3 + sig->param_count - complex_count);
593 csig->params [j++] = &mono_defaults.object_class->byval_arg;
594 csig->params [j++] = &byte_array_class->this_arg;
595 csig->params [j++] = &byte_array_class->this_arg;
596 for (i = 0; i < sig->param_count; i++) {
597 if (marshal_types [i] != MONO_MARSHAL_SERIALIZE)
598 csig->params [j++] = sig->params [i];
601 csig->ret = sig->ret;
603 csig->ret = &mono_defaults.void_class->byval_arg;
605 csig->hasthis = FALSE;
607 mb = mono_mb_new (method->klass, method->name, MONO_WRAPPER_XDOMAIN_DISPATCH);
608 mb->method->save_lmf = 1;
613 loc_serialized_exc = mono_mb_add_local (mb, &byte_array_class->byval_arg);
614 if (complex_count > 0)
615 loc_array = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
616 if (sig->ret->type != MONO_TYPE_VOID) {
617 loc_return = mono_mb_add_local (mb, sig->ret);
618 ret_class = mono_class_from_mono_type (sig->ret);
623 main_clause = mono_image_alloc0 (method->klass->image, sizeof (MonoExceptionClause));
624 main_clause->try_offset = mono_mb_get_label (mb);
626 /* Clean the call context */
628 mono_mb_emit_byte (mb, CEE_LDNULL);
629 mono_mb_emit_managed_call (mb, method_set_call_context, NULL);
630 mono_mb_emit_byte (mb, CEE_POP);
632 /* Deserialize call data */
634 mono_mb_emit_ldarg (mb, 1);
635 mono_mb_emit_byte (mb, CEE_LDIND_REF);
636 mono_mb_emit_byte (mb, CEE_DUP);
637 pos = mono_mb_emit_short_branch (mb, CEE_BRFALSE_S);
639 mono_marshal_emit_xdomain_copy_value (mb, byte_array_class);
640 mono_mb_emit_managed_call (mb, method_rs_deserialize, NULL);
642 if (complex_count > 0)
643 mono_mb_emit_stloc (mb, loc_array);
645 mono_mb_emit_byte (mb, CEE_POP);
647 mono_mb_patch_short_branch (mb, pos);
649 /* Get the target object */
651 mono_mb_emit_ldarg (mb, 0);
652 mono_mb_emit_managed_call (mb, method_rs_appdomain_target, NULL);
654 /* Load the arguments */
656 copy_locals_base = mb->locals;
657 param_index = 3; // Index of the first non-serialized parameter of this wrapper
659 for (i = 0; i < sig->param_count; i++) {
660 MonoType *pt = sig->params [i];
661 MonoClass *pclass = mono_class_from_mono_type (pt);
662 switch (marshal_types [i]) {
663 case MONO_MARSHAL_SERIALIZE: {
664 /* take the value from the serialized array */
665 mono_mb_emit_ldloc (mb, loc_array);
666 mono_mb_emit_icon (mb, j++);
668 if (pclass->valuetype) {
669 mono_mb_emit_byte (mb, CEE_LDELEM_REF);
670 mono_mb_emit_op (mb, CEE_UNBOX, pclass);
672 mono_mb_emit_op (mb, CEE_LDELEMA, pclass);
675 if (pclass->valuetype) {
676 mono_mb_emit_byte (mb, CEE_LDELEM_REF);
677 mono_mb_emit_op (mb, CEE_UNBOX, pclass);
678 mono_mb_emit_op (mb, CEE_LDOBJ, pclass);
680 mono_mb_emit_byte (mb, CEE_LDELEM_REF);
681 if (pclass != mono_defaults.object_class) {
682 mono_mb_emit_op (mb, CEE_CASTCLASS, pclass);
688 case MONO_MARSHAL_COPY_OUT: {
689 /* Keep a local copy of the value since we need to copy it back after the call */
690 int copy_local = mono_mb_add_local (mb, &(pclass->byval_arg));
691 mono_mb_emit_ldarg (mb, param_index++);
692 mono_marshal_emit_xdomain_copy_value (mb, pclass);
693 mono_mb_emit_byte (mb, CEE_DUP);
694 mono_mb_emit_stloc (mb, copy_local);
697 case MONO_MARSHAL_COPY: {
698 mono_mb_emit_ldarg (mb, param_index);
700 mono_mb_emit_byte (mb, CEE_DUP);
701 mono_mb_emit_byte (mb, CEE_DUP);
702 mono_mb_emit_byte (mb, CEE_LDIND_REF);
703 mono_marshal_emit_xdomain_copy_value (mb, pclass);
704 mono_mb_emit_byte (mb, CEE_STIND_REF);
706 mono_marshal_emit_xdomain_copy_value (mb, pclass);
711 case MONO_MARSHAL_NONE:
712 mono_mb_emit_ldarg (mb, param_index++);
717 /* Make the call to the real object */
719 mono_marshal_emit_thread_force_interrupt_checkpoint (mb);
721 mono_mb_emit_op (mb, CEE_CALLVIRT, method);
723 if (sig->ret->type != MONO_TYPE_VOID)
724 mono_mb_emit_stloc (mb, loc_return);
726 /* copy back MONO_MARSHAL_COPY_OUT parameters */
730 for (i = 0; i < sig->param_count; i++) {
731 if (marshal_types [i] == MONO_MARSHAL_SERIALIZE) continue;
732 if (marshal_types [i] == MONO_MARSHAL_COPY_OUT) {
733 mono_mb_emit_ldloc (mb, copy_locals_base + (j++));
734 mono_mb_emit_ldarg (mb, param_index);
735 mono_marshal_emit_xdomain_copy_out_value (mb, mono_class_from_mono_type (sig->params [i]));
740 /* Serialize the return values */
742 if (complex_out_count > 0) {
743 /* Reset parameters in the array that don't need to be serialized back */
745 for (i = 0; i < sig->param_count; i++) {
746 if (marshal_types[i] != MONO_MARSHAL_SERIALIZE) continue;
747 if (!sig->params [i]->byref) {
748 mono_mb_emit_ldloc (mb, loc_array);
749 mono_mb_emit_icon (mb, j);
750 mono_mb_emit_byte (mb, CEE_LDNULL);
751 mono_mb_emit_byte (mb, CEE_STELEM_REF);
756 /* Add the return value to the array */
758 if (ret_marshal_type == MONO_MARSHAL_SERIALIZE) {
759 mono_mb_emit_ldloc (mb, loc_array);
760 mono_mb_emit_icon (mb, complex_count); /* The array has an additional slot to hold the ret value */
761 mono_mb_emit_ldloc (mb, loc_return);
763 g_assert (ret_class); /*FIXME properly fail here*/
764 if (ret_class->valuetype) {
765 mono_mb_emit_op (mb, CEE_BOX, ret_class);
767 mono_mb_emit_byte (mb, CEE_STELEM_REF);
772 mono_mb_emit_ldarg (mb, 1);
773 mono_mb_emit_ldloc (mb, loc_array);
774 mono_mb_emit_managed_call (mb, method_rs_serialize, NULL);
775 mono_mb_emit_byte (mb, CEE_STIND_REF);
776 } else if (ret_marshal_type == MONO_MARSHAL_SERIALIZE) {
777 mono_mb_emit_ldarg (mb, 1);
778 mono_mb_emit_ldloc (mb, loc_return);
779 if (ret_class->valuetype) {
780 mono_mb_emit_op (mb, CEE_BOX, ret_class);
782 mono_mb_emit_managed_call (mb, method_rs_serialize, NULL);
783 mono_mb_emit_byte (mb, CEE_STIND_REF);
785 mono_mb_emit_ldarg (mb, 1);
786 mono_mb_emit_byte (mb, CEE_LDNULL);
787 mono_mb_emit_managed_call (mb, method_rs_serialize, NULL);
788 mono_mb_emit_byte (mb, CEE_STIND_REF);
791 mono_mb_emit_ldarg (mb, 2);
792 mono_mb_emit_byte (mb, CEE_LDNULL);
793 mono_mb_emit_byte (mb, CEE_STIND_REF);
794 pos_leave = mono_mb_emit_branch (mb, CEE_LEAVE);
796 /* Main exception catch */
797 main_clause->flags = MONO_EXCEPTION_CLAUSE_NONE;
798 main_clause->try_len = mono_mb_get_pos (mb) - main_clause->try_offset;
799 main_clause->data.catch_class = mono_defaults.object_class;
802 main_clause->handler_offset = mono_mb_get_label (mb);
803 mono_mb_emit_managed_call (mb, method_rs_serialize_exc, NULL);
804 mono_mb_emit_stloc (mb, loc_serialized_exc);
805 mono_mb_emit_ldarg (mb, 2);
806 mono_mb_emit_ldloc (mb, loc_serialized_exc);
807 mono_mb_emit_byte (mb, CEE_STIND_REF);
808 mono_mb_emit_branch (mb, CEE_LEAVE);
809 main_clause->handler_len = mono_mb_get_pos (mb) - main_clause->handler_offset;
812 mono_mb_patch_branch (mb, pos_leave);
815 mono_mb_emit_ldloc (mb, loc_return);
817 mono_mb_emit_byte (mb, CEE_RET);
819 mono_mb_set_clauses (mb, 1, main_clause);
822 res = mono_remoting_mb_create_and_cache (method, mb, csig, csig->param_count + 16);
828 /* mono_marshal_get_xappdomain_invoke ()
829 * Generates a fast remoting wrapper for cross app domain calls.
832 mono_marshal_get_xappdomain_invoke (MonoMethod *method)
834 MonoMethodSignature *sig;
835 MonoMethodBuilder *mb;
837 int i, j, complex_count, complex_out_count, copy_locals_base;
839 MonoClass *ret_class = NULL;
840 MonoMethod *xdomain_method;
841 int ret_marshal_type = MONO_MARSHAL_NONE;
842 int loc_array=0, loc_serialized_data=-1, loc_real_proxy;
843 int loc_old_domainid, loc_domainid, loc_return=0, loc_serialized_exc=0, loc_context;
844 int pos, pos_dispatch, pos_noex;
845 gboolean copy_return = FALSE;
849 if (method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE || method->wrapper_type == MONO_WRAPPER_XDOMAIN_INVOKE)
852 /* we cant remote methods without this pointer */
853 if (!mono_method_signature (method)->hasthis)
856 mono_remoting_marshal_init ();
858 if (!mono_marshal_supports_fast_xdomain (method))
859 return mono_marshal_get_remoting_invoke (method);
861 if ((res = mono_marshal_remoting_find_in_cache (method, MONO_WRAPPER_XDOMAIN_INVOKE)))
864 sig = mono_signature_no_pinvoke (method);
866 mb = mono_mb_new (method->klass, method->name, MONO_WRAPPER_XDOMAIN_INVOKE);
867 mb->method->save_lmf = 1;
869 /* Count the number of parameters that need to be serialized */
871 marshal_types = alloca (sizeof (int) * sig->param_count);
872 complex_count = complex_out_count = 0;
873 for (i = 0; i < sig->param_count; i++) {
874 MonoType *ptype = sig->params[i];
875 int mt = mono_get_xdomain_marshal_type (ptype);
877 /* If the [Out] attribute is applied to a parameter that can be internally copied,
878 * the copy will be made by reusing the original object instance
880 if ((ptype->attrs & PARAM_ATTRIBUTE_OUT) != 0 && mt == MONO_MARSHAL_COPY && !ptype->byref)
881 mt = MONO_MARSHAL_COPY_OUT;
882 else if (mt == MONO_MARSHAL_SERIALIZE) {
884 if (ptype->byref) complex_out_count++;
886 marshal_types [i] = mt;
889 if (sig->ret->type != MONO_TYPE_VOID) {
890 ret_marshal_type = mono_get_xdomain_marshal_type (sig->ret);
891 ret_class = mono_class_from_mono_type (sig->ret);
892 copy_return = ret_marshal_type != MONO_MARSHAL_SERIALIZE;
898 if (complex_count > 0)
899 loc_array = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
900 loc_serialized_data = mono_mb_add_local (mb, &byte_array_class->byval_arg);
901 loc_real_proxy = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
903 loc_return = mono_mb_add_local (mb, sig->ret);
904 loc_old_domainid = mono_mb_add_local (mb, &mono_defaults.int32_class->byval_arg);
905 loc_domainid = mono_mb_add_local (mb, &mono_defaults.int32_class->byval_arg);
906 loc_serialized_exc = mono_mb_add_local (mb, &byte_array_class->byval_arg);
907 loc_context = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
909 /* Save thread domain data */
911 mono_mb_emit_icall (mb, mono_context_get);
912 mono_mb_emit_byte (mb, CEE_DUP);
913 mono_mb_emit_stloc (mb, loc_context);
915 /* If the thread is not running in the default context, it needs to go
916 * through the whole remoting sink, since the context is going to change
918 mono_mb_emit_managed_call (mb, method_needs_context_sink, NULL);
919 pos = mono_mb_emit_short_branch (mb, CEE_BRTRUE_S);
921 /* Another case in which the fast path can't be used: when the target domain
922 * has a different image for the same assembly.
925 /* Get the target domain id */
927 mono_mb_emit_ldarg (mb, 0);
928 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoTransparentProxy, rp));
929 mono_mb_emit_byte (mb, CEE_LDIND_REF);
930 mono_mb_emit_byte (mb, CEE_DUP);
931 mono_mb_emit_stloc (mb, loc_real_proxy);
933 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoRealProxy, target_domain_id));
934 mono_mb_emit_byte (mb, CEE_LDIND_I4);
935 mono_mb_emit_stloc (mb, loc_domainid);
937 /* Check if the target domain has the same image for the required assembly */
939 mono_mb_emit_ldloc (mb, loc_domainid);
940 mono_mb_emit_ptr (mb, method->klass->image);
941 mono_mb_emit_icall (mb, mono_marshal_check_domain_image);
942 pos_dispatch = mono_mb_emit_short_branch (mb, CEE_BRTRUE_S);
944 /* Use the whole remoting sink to dispatch this message */
946 mono_mb_patch_short_branch (mb, pos);
948 mono_mb_emit_ldarg (mb, 0);
949 for (i = 0; i < sig->param_count; i++)
950 mono_mb_emit_ldarg (mb, i + 1);
952 mono_mb_emit_managed_call (mb, mono_marshal_get_remoting_invoke (method), NULL);
953 mono_mb_emit_byte (mb, CEE_RET);
954 mono_mb_patch_short_branch (mb, pos_dispatch);
956 /* Create the array that will hold the parameters to be serialized */
958 if (complex_count > 0) {
959 mono_mb_emit_icon (mb, (ret_marshal_type == MONO_MARSHAL_SERIALIZE && complex_out_count > 0) ? complex_count + 1 : complex_count); /* +1 for the return type */
960 mono_mb_emit_op (mb, CEE_NEWARR, mono_defaults.object_class);
963 for (i = 0; i < sig->param_count; i++) {
965 if (marshal_types [i] != MONO_MARSHAL_SERIALIZE) continue;
966 pclass = mono_class_from_mono_type (sig->params[i]);
967 mono_mb_emit_byte (mb, CEE_DUP);
968 mono_mb_emit_icon (mb, j);
969 mono_mb_emit_ldarg (mb, i + 1); /* 0=this */
970 if (sig->params[i]->byref) {
971 if (pclass->valuetype)
972 mono_mb_emit_op (mb, CEE_LDOBJ, pclass);
974 mono_mb_emit_byte (mb, CEE_LDIND_REF);
976 if (pclass->valuetype)
977 mono_mb_emit_op (mb, CEE_BOX, pclass);
978 mono_mb_emit_byte (mb, CEE_STELEM_REF);
981 mono_mb_emit_stloc (mb, loc_array);
983 /* Serialize parameters */
985 mono_mb_emit_ldloc (mb, loc_array);
986 mono_mb_emit_managed_call (mb, method_rs_serialize, NULL);
987 mono_mb_emit_stloc (mb, loc_serialized_data);
989 mono_mb_emit_byte (mb, CEE_LDNULL);
990 mono_mb_emit_managed_call (mb, method_rs_serialize, NULL);
991 mono_mb_emit_stloc (mb, loc_serialized_data);
996 mono_mb_emit_ldloc (mb, loc_domainid);
997 mono_mb_emit_byte (mb, CEE_LDC_I4_1);
998 mono_marshal_emit_switch_domain (mb);
999 mono_mb_emit_stloc (mb, loc_old_domainid);
1001 /* Load the arguments */
1003 mono_mb_emit_ldloc (mb, loc_real_proxy);
1004 mono_mb_emit_ldloc_addr (mb, loc_serialized_data);
1005 mono_mb_emit_ldloc_addr (mb, loc_serialized_exc);
1007 copy_locals_base = mb->locals;
1008 for (i = 0; i < sig->param_count; i++) {
1009 switch (marshal_types [i]) {
1010 case MONO_MARSHAL_SERIALIZE:
1012 case MONO_MARSHAL_COPY: {
1013 mono_mb_emit_ldarg (mb, i+1);
1014 if (sig->params [i]->byref) {
1015 /* make a local copy of the byref parameter. The real parameter
1016 * will be updated after the xdomain call
1018 MonoClass *pclass = mono_class_from_mono_type (sig->params [i]);
1019 int copy_local = mono_mb_add_local (mb, &(pclass->byval_arg));
1020 mono_mb_emit_byte (mb, CEE_LDIND_REF);
1021 mono_mb_emit_stloc (mb, copy_local);
1022 mono_mb_emit_ldloc_addr (mb, copy_local);
1026 case MONO_MARSHAL_COPY_OUT:
1027 case MONO_MARSHAL_NONE:
1028 mono_mb_emit_ldarg (mb, i+1);
1033 /* Make the call to the invoke wrapper in the target domain */
1035 xdomain_method = mono_marshal_get_xappdomain_dispatch (method, marshal_types, complex_count, complex_out_count, ret_marshal_type);
1036 mono_marshal_emit_load_domain_method (mb, xdomain_method);
1037 mono_mb_emit_calli (mb, mono_method_signature (xdomain_method));
1040 mono_mb_emit_stloc (mb, loc_return);
1044 mono_mb_emit_ldloc (mb, loc_old_domainid);
1045 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
1046 mono_marshal_emit_switch_domain (mb);
1047 mono_mb_emit_byte (mb, CEE_POP);
1049 /* Restore thread domain data */
1051 mono_mb_emit_ldloc (mb, loc_context);
1052 mono_mb_emit_icall (mb, mono_context_set);
1054 /* if (loc_serialized_exc != null) ... */
1056 mono_mb_emit_ldloc (mb, loc_serialized_exc);
1057 pos_noex = mono_mb_emit_short_branch (mb, CEE_BRFALSE_S);
1059 mono_mb_emit_ldloc (mb, loc_serialized_exc);
1060 mono_marshal_emit_xdomain_copy_value (mb, byte_array_class);
1061 mono_mb_emit_managed_call (mb, method_rs_deserialize, NULL);
1062 mono_mb_emit_op (mb, CEE_CASTCLASS, mono_defaults.exception_class);
1063 mono_mb_emit_managed_call (mb, method_exc_fixexc, NULL);
1064 mono_mb_emit_byte (mb, CEE_THROW);
1065 mono_mb_patch_short_branch (mb, pos_noex);
1067 /* copy back non-serialized output parameters */
1070 for (i = 0; i < sig->param_count; i++) {
1071 if (!sig->params [i]->byref || marshal_types [i] != MONO_MARSHAL_COPY) continue;
1072 mono_mb_emit_ldarg (mb, i + 1);
1073 mono_mb_emit_ldloc (mb, copy_locals_base + (j++));
1074 mono_marshal_emit_xdomain_copy_value (mb, mono_class_from_mono_type (sig->params [i]));
1075 mono_mb_emit_byte (mb, CEE_STIND_REF);
1078 /* Deserialize out parameters */
1080 if (complex_out_count > 0) {
1081 mono_mb_emit_ldloc (mb, loc_serialized_data);
1082 mono_marshal_emit_xdomain_copy_value (mb, byte_array_class);
1083 mono_mb_emit_managed_call (mb, method_rs_deserialize, NULL);
1084 mono_mb_emit_stloc (mb, loc_array);
1086 /* Copy back output parameters and return type */
1089 for (i = 0; i < sig->param_count; i++) {
1090 if (marshal_types [i] != MONO_MARSHAL_SERIALIZE) continue;
1091 if (sig->params[i]->byref) {
1092 MonoClass *pclass = mono_class_from_mono_type (sig->params [i]);
1093 mono_mb_emit_ldarg (mb, i + 1);
1094 mono_mb_emit_ldloc (mb, loc_array);
1095 mono_mb_emit_icon (mb, j);
1096 mono_mb_emit_byte (mb, CEE_LDELEM_REF);
1097 if (pclass->valuetype) {
1098 mono_mb_emit_op (mb, CEE_UNBOX, pclass);
1099 mono_mb_emit_op (mb, CEE_LDOBJ, pclass);
1100 mono_mb_emit_op (mb, CEE_STOBJ, pclass);
1102 if (pclass != mono_defaults.object_class)
1103 mono_mb_emit_op (mb, CEE_CASTCLASS, pclass);
1104 mono_mb_emit_byte (mb, CEE_STIND_REF);
1110 if (ret_marshal_type == MONO_MARSHAL_SERIALIZE) {
1111 mono_mb_emit_ldloc (mb, loc_array);
1112 mono_mb_emit_icon (mb, complex_count);
1113 mono_mb_emit_byte (mb, CEE_LDELEM_REF);
1114 if (ret_class->valuetype) {
1115 mono_mb_emit_op (mb, CEE_UNBOX, ret_class);
1116 mono_mb_emit_op (mb, CEE_LDOBJ, ret_class);
1119 } else if (ret_marshal_type == MONO_MARSHAL_SERIALIZE) {
1120 mono_mb_emit_ldloc (mb, loc_serialized_data);
1121 mono_marshal_emit_xdomain_copy_value (mb, byte_array_class);
1122 mono_mb_emit_managed_call (mb, method_rs_deserialize, NULL);
1123 if (ret_class->valuetype) {
1124 mono_mb_emit_op (mb, CEE_UNBOX, ret_class);
1125 mono_mb_emit_op (mb, CEE_LDOBJ, ret_class);
1126 } else if (ret_class != mono_defaults.object_class) {
1127 mono_mb_emit_op (mb, CEE_CASTCLASS, ret_class);
1130 mono_mb_emit_ldloc (mb, loc_serialized_data);
1131 mono_mb_emit_byte (mb, CEE_DUP);
1132 pos = mono_mb_emit_short_branch (mb, CEE_BRFALSE_S);
1133 mono_marshal_emit_xdomain_copy_value (mb, byte_array_class);
1135 mono_mb_patch_short_branch (mb, pos);
1136 mono_mb_emit_managed_call (mb, method_rs_deserialize, NULL);
1137 mono_mb_emit_byte (mb, CEE_POP);
1141 mono_mb_emit_ldloc (mb, loc_return);
1142 if (ret_marshal_type == MONO_MARSHAL_COPY)
1143 mono_marshal_emit_xdomain_copy_value (mb, ret_class);
1146 mono_mb_emit_byte (mb, CEE_RET);
1147 #endif /* DISABLE_JIT */
1149 res = mono_remoting_mb_create_and_cache (method, mb, sig, sig->param_count + 16);
1156 mono_marshal_get_remoting_invoke_for_target (MonoMethod *method, MonoRemotingTarget target_type)
1158 if (target_type == MONO_REMOTING_TARGET_APPDOMAIN) {
1159 return mono_marshal_get_xappdomain_invoke (method);
1160 } else if (target_type == MONO_REMOTING_TARGET_COMINTEROP) {
1162 return mono_cominterop_get_invoke (method);
1164 g_assert_not_reached ();
1167 return mono_marshal_get_remoting_invoke (method);
1173 G_GNUC_UNUSED static gpointer
1174 mono_marshal_load_remoting_wrapper (MonoRealProxy *rp, MonoMethod *method)
1176 if (rp->target_domain_id != -1)
1177 return mono_compile_method (mono_marshal_get_xappdomain_invoke (method));
1179 return mono_compile_method (mono_marshal_get_remoting_invoke (method));
1183 mono_marshal_get_remoting_invoke_with_check (MonoMethod *method)
1185 MonoMethodSignature *sig;
1186 MonoMethodBuilder *mb;
1187 MonoMethod *res, *native;
1188 int i, pos, pos_rem;
1192 if (method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)
1195 /* we cant remote methods without this pointer */
1196 g_assert (mono_method_signature (method)->hasthis);
1198 if ((res = mono_marshal_remoting_find_in_cache (method, MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)))
1201 sig = mono_signature_no_pinvoke (method);
1203 mb = mono_mb_new (method->klass, method->name, MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK);
1206 for (i = 0; i <= sig->param_count; i++)
1207 mono_mb_emit_ldarg (mb, i);
1209 mono_mb_emit_ldarg (mb, 0);
1210 pos = mono_mb_emit_proxy_check (mb, CEE_BNE_UN);
1212 if (mono_marshal_supports_fast_xdomain (method)) {
1213 mono_mb_emit_ldarg (mb, 0);
1214 pos_rem = mono_mb_emit_xdomain_check (mb, CEE_BEQ);
1216 /* wrapper for cross app domain calls */
1217 native = mono_marshal_get_xappdomain_invoke (method);
1218 mono_mb_emit_managed_call (mb, native, mono_method_signature (native));
1219 mono_mb_emit_byte (mb, CEE_RET);
1221 mono_mb_patch_branch (mb, pos_rem);
1223 /* wrapper for normal remote calls */
1224 native = mono_marshal_get_remoting_invoke (method);
1225 mono_mb_emit_managed_call (mb, native, mono_method_signature (native));
1226 mono_mb_emit_byte (mb, CEE_RET);
1229 mono_mb_patch_branch (mb, pos);
1230 mono_mb_emit_managed_call (mb, method, mono_method_signature (method));
1231 mono_mb_emit_byte (mb, CEE_RET);
1234 res = mono_remoting_mb_create_and_cache (method, mb, sig, sig->param_count + 16);
1241 * mono_marshal_get_ldfld_remote_wrapper:
1242 * @klass: The return type
1244 * This method generates a wrapper for calling mono_load_remote_field_new.
1245 * The return type is ignored for now, as mono_load_remote_field_new () always
1246 * returns an object. In the future, to optimize some codepaths, we might
1247 * call a different function that takes a pointer to a valuetype, instead.
1250 mono_marshal_get_ldfld_remote_wrapper (MonoClass *klass)
1252 MonoMethodSignature *sig, *csig;
1253 MonoMethodBuilder *mb;
1255 static MonoMethod* cached = NULL;
1257 mono_marshal_lock_internal ();
1259 mono_marshal_unlock_internal ();
1262 mono_marshal_unlock_internal ();
1264 mb = mono_mb_new_no_dup_name (mono_defaults.object_class, "__mono_load_remote_field_new_wrapper", MONO_WRAPPER_LDFLD_REMOTE);
1266 mb->method->save_lmf = 1;
1268 sig = mono_metadata_signature_alloc (mono_defaults.corlib, 3);
1269 sig->params [0] = &mono_defaults.object_class->byval_arg;
1270 sig->params [1] = &mono_defaults.int_class->byval_arg;
1271 sig->params [2] = &mono_defaults.int_class->byval_arg;
1272 sig->ret = &mono_defaults.object_class->byval_arg;
1275 mono_mb_emit_ldarg (mb, 0);
1276 mono_mb_emit_ldarg (mb, 1);
1277 mono_mb_emit_ldarg (mb, 2);
1279 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 3);
1280 csig->params [0] = &mono_defaults.object_class->byval_arg;
1281 csig->params [1] = &mono_defaults.int_class->byval_arg;
1282 csig->params [2] = &mono_defaults.int_class->byval_arg;
1283 csig->ret = &mono_defaults.object_class->byval_arg;
1286 mono_mb_emit_native_call (mb, csig, mono_load_remote_field_new);
1287 mono_marshal_emit_thread_interrupt_checkpoint (mb);
1289 mono_mb_emit_byte (mb, CEE_RET);
1292 mono_marshal_lock_internal ();
1294 mono_marshal_unlock_internal ();
1297 newm = mono_mb_create (mb, sig, 4, NULL);
1298 mono_marshal_lock_internal ();
1303 mono_marshal_unlock_internal ();
1305 mono_marshal_unlock_internal ();
1306 mono_free_method (newm);
1315 * mono_marshal_get_ldfld_wrapper:
1316 * @type: the type of the field
1318 * This method generates a function which can be use to load a field with type
1319 * @type from an object. The generated function has the following signature:
1320 * <@type> ldfld_wrapper (MonoObject *this, MonoClass *class, MonoClassField *field, int offset)
1323 mono_marshal_get_ldfld_wrapper (MonoType *type)
1325 MonoMethodSignature *sig;
1326 MonoMethodBuilder *mb;
1332 int t, pos0, pos1 = 0;
1334 type = mono_type_get_underlying_type (type);
1339 if (type->type == MONO_TYPE_SZARRAY) {
1340 klass = mono_defaults.array_class;
1341 } else if (type->type == MONO_TYPE_VALUETYPE) {
1342 klass = type->data.klass;
1343 } else if (t == MONO_TYPE_OBJECT || t == MONO_TYPE_CLASS || t == MONO_TYPE_STRING) {
1344 klass = mono_defaults.object_class;
1345 } else if (t == MONO_TYPE_PTR || t == MONO_TYPE_FNPTR) {
1346 klass = mono_defaults.int_class;
1347 } else if (t == MONO_TYPE_GENERICINST) {
1348 if (mono_type_generic_inst_is_valuetype (type))
1349 klass = mono_class_from_mono_type (type);
1351 klass = mono_defaults.object_class;
1353 klass = mono_class_from_mono_type (type);
1356 klass = mono_defaults.int_class;
1359 cache = get_cache (&klass->image->ldfld_wrapper_cache, mono_aligned_addr_hash, NULL);
1360 if ((res = mono_marshal_find_in_cache (cache, klass)))
1363 /* we add the %p pointer value of klass because class names are not unique */
1364 name = g_strdup_printf ("__ldfld_wrapper_%p_%s.%s", klass, klass->name_space, klass->name);
1365 mb = mono_mb_new (mono_defaults.object_class, name, MONO_WRAPPER_LDFLD);
1368 sig = mono_metadata_signature_alloc (mono_defaults.corlib, 4);
1369 sig->params [0] = &mono_defaults.object_class->byval_arg;
1370 sig->params [1] = &mono_defaults.int_class->byval_arg;
1371 sig->params [2] = &mono_defaults.int_class->byval_arg;
1372 sig->params [3] = &mono_defaults.int_class->byval_arg;
1373 sig->ret = &klass->byval_arg;
1376 mono_mb_emit_ldarg (mb, 0);
1377 pos0 = mono_mb_emit_proxy_check (mb, CEE_BNE_UN);
1379 mono_mb_emit_ldarg (mb, 0);
1380 mono_mb_emit_ldarg (mb, 1);
1381 mono_mb_emit_ldarg (mb, 2);
1383 mono_mb_emit_managed_call (mb, mono_marshal_get_ldfld_remote_wrapper (klass), NULL);
1386 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 3);
1387 csig->params [0] = &mono_defaults.object_class->byval_arg;
1388 csig->params [1] = &mono_defaults.int_class->byval_arg;
1389 csig->params [2] = &mono_defaults.int_class->byval_arg;
1390 csig->ret = &klass->this_arg;
1393 mono_mb_emit_native_call (mb, csig, mono_load_remote_field_new);
1394 mono_marshal_emit_thread_interrupt_checkpoint (mb);
1397 if (klass->valuetype) {
1398 mono_mb_emit_op (mb, CEE_UNBOX, klass);
1399 pos1 = mono_mb_emit_branch (mb, CEE_BR);
1401 mono_mb_emit_byte (mb, CEE_RET);
1404 mono_mb_patch_branch (mb, pos0);
1406 mono_mb_emit_ldarg (mb, 0);
1407 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
1408 mono_mb_emit_byte (mb, CEE_MONO_OBJADDR);
1409 mono_mb_emit_ldarg (mb, 3);
1410 mono_mb_emit_byte (mb, CEE_ADD);
1412 if (klass->valuetype)
1413 mono_mb_patch_branch (mb, pos1);
1418 case MONO_TYPE_BOOLEAN:
1419 case MONO_TYPE_CHAR:
1428 case MONO_TYPE_ARRAY:
1429 case MONO_TYPE_SZARRAY:
1430 case MONO_TYPE_OBJECT:
1431 case MONO_TYPE_CLASS:
1432 case MONO_TYPE_STRING:
1436 case MONO_TYPE_FNPTR:
1437 mono_mb_emit_byte (mb, mono_type_to_ldind (type));
1439 case MONO_TYPE_VALUETYPE:
1440 g_assert (!klass->enumtype);
1441 mono_mb_emit_op (mb, CEE_LDOBJ, klass);
1443 case MONO_TYPE_GENERICINST:
1444 if (mono_type_generic_inst_is_valuetype (type)) {
1445 mono_mb_emit_op (mb, CEE_LDOBJ, klass);
1447 mono_mb_emit_byte (mb, CEE_LDIND_REF);
1451 case MONO_TYPE_MVAR:
1452 mono_mb_emit_op (mb, CEE_LDOBJ, klass);
1455 g_warning ("type %x not implemented", type->type);
1456 g_assert_not_reached ();
1459 mono_mb_emit_byte (mb, CEE_RET);
1460 #endif /* DISABLE_JIT */
1462 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_NONE);
1463 info->d.proxy.klass = klass;
1464 res = mono_mb_create_and_cache_full (cache, klass,
1465 mb, sig, sig->param_count + 16, info, NULL);
1472 * mono_marshal_get_ldflda_wrapper:
1473 * @type: the type of the field
1475 * This method generates a function which can be used to load a field address
1476 * from an object. The generated function has the following signature:
1477 * gpointer ldflda_wrapper (MonoObject *this, MonoClass *class, MonoClassField *field, int offset);
1480 mono_marshal_get_ldflda_wrapper (MonoType *type)
1482 MonoMethodSignature *sig;
1483 MonoMethodBuilder *mb;
1489 int t, pos0, pos1, pos2, pos3;
1491 type = mono_type_get_underlying_type (type);
1495 if (type->type == MONO_TYPE_SZARRAY) {
1496 klass = mono_defaults.array_class;
1497 } else if (type->type == MONO_TYPE_VALUETYPE) {
1498 klass = type->data.klass;
1499 } else if (t == MONO_TYPE_OBJECT || t == MONO_TYPE_CLASS || t == MONO_TYPE_STRING ||
1500 t == MONO_TYPE_CLASS) {
1501 klass = mono_defaults.object_class;
1502 } else if (t == MONO_TYPE_PTR || t == MONO_TYPE_FNPTR) {
1503 klass = mono_defaults.int_class;
1504 } else if (t == MONO_TYPE_GENERICINST) {
1505 if (mono_type_generic_inst_is_valuetype (type))
1506 klass = mono_class_from_mono_type (type);
1508 klass = mono_defaults.object_class;
1510 klass = mono_class_from_mono_type (type);
1513 klass = mono_defaults.int_class;
1516 cache = get_cache (&klass->image->ldflda_wrapper_cache, mono_aligned_addr_hash, NULL);
1517 if ((res = mono_marshal_find_in_cache (cache, klass)))
1520 /* we add the %p pointer value of klass because class names are not unique */
1521 name = g_strdup_printf ("__ldflda_wrapper_%p_%s.%s", klass, klass->name_space, klass->name);
1522 mb = mono_mb_new (mono_defaults.object_class, name, MONO_WRAPPER_LDFLDA);
1525 sig = mono_metadata_signature_alloc (mono_defaults.corlib, 4);
1526 sig->params [0] = &mono_defaults.object_class->byval_arg;
1527 sig->params [1] = &mono_defaults.int_class->byval_arg;
1528 sig->params [2] = &mono_defaults.int_class->byval_arg;
1529 sig->params [3] = &mono_defaults.int_class->byval_arg;
1530 sig->ret = &mono_defaults.int_class->byval_arg;
1533 /* if typeof (this) != transparent_proxy goto pos0 */
1534 mono_mb_emit_ldarg (mb, 0);
1535 pos0 = mono_mb_emit_proxy_check (mb, CEE_BNE_UN);
1537 /* if same_appdomain goto pos1 */
1538 mono_mb_emit_ldarg (mb, 0);
1539 pos1 = mono_mb_emit_xdomain_check (mb, CEE_BEQ);
1541 mono_mb_emit_exception_full (mb, "System", "InvalidOperationException", "Attempt to load field address from object in another appdomain.");
1543 /* same app domain */
1544 mono_mb_patch_branch (mb, pos1);
1546 /* if typeof (this) != contextbound goto pos2 */
1547 mono_mb_emit_ldarg (mb, 0);
1548 pos2 = mono_mb_emit_contextbound_check (mb, CEE_BEQ);
1550 /* if this->rp->context == mono_context_get goto pos3 */
1551 mono_mb_emit_ldarg (mb, 0);
1552 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoTransparentProxy, rp));
1553 mono_mb_emit_byte (mb, CEE_LDIND_REF);
1554 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoRealProxy, context));
1555 mono_mb_emit_byte (mb, CEE_LDIND_REF);
1556 mono_mb_emit_icall (mb, mono_context_get);
1557 pos3 = mono_mb_emit_branch (mb, CEE_BEQ);
1559 mono_mb_emit_exception_full (mb, "System", "InvalidOperationException", "Attempt to load field address from object in another context.");
1561 mono_mb_patch_branch (mb, pos2);
1562 mono_mb_patch_branch (mb, pos3);
1564 /* return the address of the field from this->rp->unwrapped_server */
1565 mono_mb_emit_ldarg (mb, 0);
1566 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoTransparentProxy, rp));
1567 mono_mb_emit_byte (mb, CEE_LDIND_REF);
1568 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoRealProxy, unwrapped_server));
1569 mono_mb_emit_byte (mb, CEE_LDIND_REF);
1570 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
1571 mono_mb_emit_byte (mb, CEE_MONO_OBJADDR);
1572 mono_mb_emit_ldarg (mb, 3);
1573 mono_mb_emit_byte (mb, CEE_ADD);
1574 mono_mb_emit_byte (mb, CEE_RET);
1576 /* not a proxy: return the address of the field directly */
1577 mono_mb_patch_branch (mb, pos0);
1579 mono_mb_emit_ldarg (mb, 0);
1580 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
1581 mono_mb_emit_byte (mb, CEE_MONO_OBJADDR);
1582 mono_mb_emit_ldarg (mb, 3);
1583 mono_mb_emit_byte (mb, CEE_ADD);
1585 mono_mb_emit_byte (mb, CEE_RET);
1588 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_NONE);
1589 info->d.proxy.klass = klass;
1590 res = mono_mb_create_and_cache_full (cache, klass,
1591 mb, sig, sig->param_count + 16,
1599 * mono_marshal_get_stfld_remote_wrapper:
1600 * klass: The type of the field
1602 * This function generates a wrapper for calling mono_store_remote_field_new
1603 * with the appropriate signature.
1604 * Similarly to mono_marshal_get_ldfld_remote_wrapper () this doesn't depend on the
1605 * klass argument anymore.
1608 mono_marshal_get_stfld_remote_wrapper (MonoClass *klass)
1610 MonoMethodSignature *sig, *csig;
1611 MonoMethodBuilder *mb;
1613 static MonoMethod *cached = NULL;
1615 mono_marshal_lock_internal ();
1617 mono_marshal_unlock_internal ();
1620 mono_marshal_unlock_internal ();
1622 mb = mono_mb_new_no_dup_name (mono_defaults.object_class, "__mono_store_remote_field_new_wrapper", MONO_WRAPPER_STFLD_REMOTE);
1624 mb->method->save_lmf = 1;
1626 sig = mono_metadata_signature_alloc (mono_defaults.corlib, 4);
1627 sig->params [0] = &mono_defaults.object_class->byval_arg;
1628 sig->params [1] = &mono_defaults.int_class->byval_arg;
1629 sig->params [2] = &mono_defaults.int_class->byval_arg;
1630 sig->params [3] = &mono_defaults.object_class->byval_arg;
1631 sig->ret = &mono_defaults.void_class->byval_arg;
1634 mono_mb_emit_ldarg (mb, 0);
1635 mono_mb_emit_ldarg (mb, 1);
1636 mono_mb_emit_ldarg (mb, 2);
1637 mono_mb_emit_ldarg (mb, 3);
1639 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 4);
1640 csig->params [0] = &mono_defaults.object_class->byval_arg;
1641 csig->params [1] = &mono_defaults.int_class->byval_arg;
1642 csig->params [2] = &mono_defaults.int_class->byval_arg;
1643 csig->params [3] = &mono_defaults.object_class->byval_arg;
1644 csig->ret = &mono_defaults.void_class->byval_arg;
1647 mono_mb_emit_native_call (mb, csig, mono_store_remote_field_new);
1648 mono_marshal_emit_thread_interrupt_checkpoint (mb);
1650 mono_mb_emit_byte (mb, CEE_RET);
1653 mono_marshal_lock_internal ();
1655 mono_marshal_unlock_internal ();
1658 newm = mono_mb_create (mb, sig, 6, NULL);
1659 mono_marshal_lock_internal ();
1664 mono_marshal_unlock_internal ();
1666 mono_marshal_unlock_internal ();
1667 mono_free_method (newm);
1676 * mono_marshal_get_stfld_wrapper:
1677 * @type: the type of the field
1679 * This method generates a function which can be use to store a field with type
1680 * @type. The generated function has the following signature:
1681 * void stfld_wrapper (MonoObject *this, MonoClass *class, MonoClassField *field, int offset, <@type> val)
1684 mono_marshal_get_stfld_wrapper (MonoType *type)
1686 MonoMethodSignature *sig;
1687 MonoMethodBuilder *mb;
1695 type = mono_type_get_underlying_type (type);
1699 if (type->type == MONO_TYPE_SZARRAY) {
1700 klass = mono_defaults.array_class;
1701 } else if (type->type == MONO_TYPE_VALUETYPE) {
1702 klass = type->data.klass;
1703 } else if (t == MONO_TYPE_OBJECT || t == MONO_TYPE_CLASS || t == MONO_TYPE_STRING) {
1704 klass = mono_defaults.object_class;
1705 } else if (t == MONO_TYPE_PTR || t == MONO_TYPE_FNPTR) {
1706 klass = mono_defaults.int_class;
1707 } else if (t == MONO_TYPE_GENERICINST) {
1708 if (mono_type_generic_inst_is_valuetype (type))
1709 klass = mono_class_from_mono_type (type);
1711 klass = mono_defaults.object_class;
1713 klass = mono_class_from_mono_type (type);
1716 klass = mono_defaults.int_class;
1719 cache = get_cache (&klass->image->stfld_wrapper_cache, mono_aligned_addr_hash, NULL);
1720 if ((res = mono_marshal_find_in_cache (cache, klass)))
1723 /* we add the %p pointer value of klass because class names are not unique */
1724 name = g_strdup_printf ("__stfld_wrapper_%p_%s.%s", klass, klass->name_space, klass->name);
1725 mb = mono_mb_new (mono_defaults.object_class, name, MONO_WRAPPER_STFLD);
1728 sig = mono_metadata_signature_alloc (mono_defaults.corlib, 5);
1729 sig->params [0] = &mono_defaults.object_class->byval_arg;
1730 sig->params [1] = &mono_defaults.int_class->byval_arg;
1731 sig->params [2] = &mono_defaults.int_class->byval_arg;
1732 sig->params [3] = &mono_defaults.int_class->byval_arg;
1733 sig->params [4] = &klass->byval_arg;
1734 sig->ret = &mono_defaults.void_class->byval_arg;
1737 mono_mb_emit_ldarg (mb, 0);
1738 pos = mono_mb_emit_proxy_check (mb, CEE_BNE_UN);
1740 mono_mb_emit_ldarg (mb, 0);
1741 mono_mb_emit_ldarg (mb, 1);
1742 mono_mb_emit_ldarg (mb, 2);
1743 mono_mb_emit_ldarg (mb, 4);
1744 if (klass->valuetype)
1745 mono_mb_emit_op (mb, CEE_BOX, klass);
1747 mono_mb_emit_managed_call (mb, mono_marshal_get_stfld_remote_wrapper (klass), NULL);
1749 mono_mb_emit_byte (mb, CEE_RET);
1751 mono_mb_patch_branch (mb, pos);
1753 mono_mb_emit_ldarg (mb, 0);
1754 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
1755 mono_mb_emit_byte (mb, CEE_MONO_OBJADDR);
1756 mono_mb_emit_ldarg (mb, 3);
1757 mono_mb_emit_byte (mb, CEE_ADD);
1758 mono_mb_emit_ldarg (mb, 4);
1763 case MONO_TYPE_BOOLEAN:
1764 case MONO_TYPE_CHAR:
1773 case MONO_TYPE_ARRAY:
1774 case MONO_TYPE_SZARRAY:
1775 case MONO_TYPE_OBJECT:
1776 case MONO_TYPE_CLASS:
1777 case MONO_TYPE_STRING:
1781 case MONO_TYPE_FNPTR:
1782 mono_mb_emit_byte (mb, mono_type_to_stind (type));
1784 case MONO_TYPE_VALUETYPE:
1785 g_assert (!klass->enumtype);
1786 mono_mb_emit_op (mb, CEE_STOBJ, klass);
1788 case MONO_TYPE_GENERICINST:
1790 case MONO_TYPE_MVAR:
1791 mono_mb_emit_op (mb, CEE_STOBJ, klass);
1794 g_warning ("type %x not implemented", type->type);
1795 g_assert_not_reached ();
1798 mono_mb_emit_byte (mb, CEE_RET);
1801 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_NONE);
1802 info->d.proxy.klass = klass;
1803 res = mono_mb_create_and_cache_full (cache, klass,
1804 mb, sig, sig->param_count + 16,
1812 mono_marshal_get_proxy_cancast (MonoClass *klass)
1814 static MonoMethodSignature *isint_sig = NULL;
1818 int pos_failed, pos_end;
1819 char *name, *klass_name;
1820 MonoMethod *can_cast_to;
1821 MonoMethodDesc *desc;
1822 MonoMethodBuilder *mb;
1824 cache = get_cache (&klass->image->proxy_isinst_cache, mono_aligned_addr_hash, NULL);
1825 if ((res = mono_marshal_find_in_cache (cache, klass)))
1829 isint_sig = mono_metadata_signature_alloc (mono_defaults.corlib, 1);
1830 isint_sig->params [0] = &mono_defaults.object_class->byval_arg;
1831 isint_sig->ret = &mono_defaults.object_class->byval_arg;
1832 isint_sig->pinvoke = 0;
1835 klass_name = mono_type_full_name (&klass->byval_arg);
1836 name = g_strdup_printf ("__proxy_isinst_wrapper_%s", klass_name);
1837 mb = mono_mb_new (mono_defaults.object_class, name, MONO_WRAPPER_PROXY_ISINST);
1838 g_free (klass_name);
1841 mb->method->save_lmf = 1;
1844 /* get the real proxy from the transparent proxy*/
1845 mono_mb_emit_ldarg (mb, 0);
1846 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoTransparentProxy, rp));
1847 mono_mb_emit_byte (mb, CEE_LDIND_REF);
1849 /* get the reflection type from the type handle */
1850 mono_mb_emit_ptr (mb, &klass->byval_arg);
1851 mono_mb_emit_icall (mb, type_from_handle);
1853 mono_mb_emit_ldarg (mb, 0);
1855 /* make the call to CanCastTo (type, ob) */
1856 desc = mono_method_desc_new ("IRemotingTypeInfo:CanCastTo", FALSE);
1857 can_cast_to = mono_method_desc_search_in_class (desc, mono_defaults.iremotingtypeinfo_class);
1858 g_assert (can_cast_to);
1859 mono_method_desc_free (desc);
1860 mono_mb_emit_op (mb, CEE_CALLVIRT, can_cast_to);
1862 pos_failed = mono_mb_emit_branch (mb, CEE_BRFALSE);
1864 /* Upgrade the proxy vtable by calling: mono_upgrade_remote_class_wrapper (type, ob)*/
1865 mono_mb_emit_ptr (mb, &klass->byval_arg);
1866 mono_mb_emit_icall (mb, type_from_handle);
1867 mono_mb_emit_ldarg (mb, 0);
1869 mono_mb_emit_icall (mb, mono_upgrade_remote_class_wrapper);
1870 mono_marshal_emit_thread_interrupt_checkpoint (mb);
1872 mono_mb_emit_ldarg (mb, 0);
1873 pos_end = mono_mb_emit_branch (mb, CEE_BR);
1877 mono_mb_patch_branch (mb, pos_failed);
1878 mono_mb_emit_byte (mb, CEE_LDNULL);
1882 mono_mb_patch_branch (mb, pos_end);
1883 mono_mb_emit_byte (mb, CEE_RET);
1886 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_NONE);
1887 info->d.proxy.klass = klass;
1888 res = mono_mb_create_and_cache_full (cache, klass, mb, isint_sig, isint_sig->param_count + 16, info, NULL);
1895 mono_upgrade_remote_class_wrapper (MonoReflectionType *rtype, MonoTransparentProxy *tproxy)
1898 MonoDomain *domain = ((MonoObject*)tproxy)->vtable->domain;
1899 klass = mono_class_from_mono_type (rtype->type);
1900 mono_upgrade_remote_class (domain, (MonoObject*)tproxy, klass);
1903 #else /* DISABLE_REMOTING */
1906 mono_remoting_init (void)
1910 #endif /* DISABLE_REMOTING */
1912 /* mono_get_xdomain_marshal_type()
1913 * Returns the kind of marshalling that a type needs for cross domain calls.
1915 static MonoXDomainMarshalType
1916 mono_get_xdomain_marshal_type (MonoType *t)
1919 case MONO_TYPE_VOID:
1920 g_assert_not_reached ();
1924 case MONO_TYPE_BOOLEAN:
1927 case MONO_TYPE_CHAR:
1934 return MONO_MARSHAL_NONE;
1935 case MONO_TYPE_STRING:
1936 return MONO_MARSHAL_COPY;
1937 case MONO_TYPE_ARRAY:
1938 case MONO_TYPE_SZARRAY: {
1939 MonoClass *elem_class = mono_class_from_mono_type (t)->element_class;
1940 if (mono_get_xdomain_marshal_type (&(elem_class->byval_arg)) != MONO_MARSHAL_SERIALIZE)
1941 return MONO_MARSHAL_COPY;
1946 return MONO_MARSHAL_SERIALIZE;
1949 /* mono_marshal_xdomain_copy_value
1950 * Makes a copy of "val" suitable for the current domain.
1953 mono_marshal_xdomain_copy_value (MonoObject *val)
1956 if (val == NULL) return NULL;
1958 domain = mono_domain_get ();
1960 switch (mono_object_class (val)->byval_arg.type) {
1961 case MONO_TYPE_VOID:
1962 g_assert_not_reached ();
1966 case MONO_TYPE_BOOLEAN:
1969 case MONO_TYPE_CHAR:
1975 case MONO_TYPE_R8: {
1976 return mono_value_box (domain, mono_object_class (val), ((char*)val) + sizeof(MonoObject));
1978 case MONO_TYPE_STRING: {
1979 MonoString *str = (MonoString *) val;
1980 return (MonoObject *) mono_string_new_utf16 (domain, mono_string_chars (str), mono_string_length (str));
1982 case MONO_TYPE_ARRAY:
1983 case MONO_TYPE_SZARRAY: {
1985 MonoXDomainMarshalType mt = mono_get_xdomain_marshal_type (&(mono_object_class (val)->element_class->byval_arg));
1986 if (mt == MONO_MARSHAL_SERIALIZE) return NULL;
1987 acopy = mono_array_clone_in_domain (domain, (MonoArray *) val);
1988 if (mt == MONO_MARSHAL_COPY) {
1989 int i, len = mono_array_length (acopy);
1990 for (i = 0; i < len; i++) {
1991 MonoObject *item = mono_array_get (acopy, gpointer, i);
1992 mono_array_setref (acopy, i, mono_marshal_xdomain_copy_value (item));
1995 return (MonoObject *) acopy;
1999 if (mono_object_class (val) == mono_defaults.stringbuilder_class) {
2000 MonoStringBuilder *oldsb = (MonoStringBuilder *) val;
2001 MonoStringBuilder *newsb = (MonoStringBuilder *) mono_object_new (domain, mono_defaults.stringbuilder_class);
2002 MONO_OBJECT_SETREF (newsb, str, mono_string_new_utf16 (domain, mono_string_chars (oldsb->str), mono_string_length (oldsb->str)));
2003 newsb->length = oldsb->length;
2004 newsb->max_capacity = (gint32)0x7fffffff;
2005 return (MonoObject *) newsb;