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Completely replace mono_error_ok with is_ok and make first external_only. (#16217)
[mono-project.git] / mono / metadata / remoting.c
blob292709f71f8bdcf13e9e2908460af6c5c1e749f0
1 /**
2 * \file
3 * Remoting support
4 *
5 * Copyright 2002-2003 Ximian, Inc (http://www.ximian.com)
6 * Copyright 2004-2009 Novell, Inc (http://www.novell.com)
7 * Copyright 2011-2014 Xamarin, Inc (http://www.xamarin.com)
8 *
9 * Licensed under the MIT license. See LICENSE file in the project root for full license information.
10 */
11
12 #include "config.h"
13
14 #include "mono/metadata/handle.h"
15 #include "mono/metadata/method-builder-ilgen-internals.h"
16 #include "mono/metadata/remoting.h"
17 #include "mono/metadata/marshal.h"
18 #include "mono/metadata/marshal-internals.h"
19 #include "mono/metadata/abi-details.h"
20 #include "mono/metadata/class-init.h"
21 #include "mono/metadata/cominterop.h"
22 #include "mono/metadata/tabledefs.h"
23 #include "mono/metadata/exception.h"
24 #include "mono/metadata/debug-helpers.h"
25 #include "mono/metadata/domain-internals.h"
26 #include "mono/metadata/reflection-internals.h"
27 #include "mono/metadata/assembly.h"
28 #include "icall-decl.h"
29 #include "icall-signatures.h"
30
31 typedef enum {
32 MONO_MARSHAL_NONE, /* No marshalling needed */
33 MONO_MARSHAL_COPY, /* Can be copied by value to the new domain */
34 MONO_MARSHAL_COPY_OUT, /* out parameter that needs to be copied back to the original instance */
35 MONO_MARSHAL_SERIALIZE /* Value needs to be serialized into the new domain */
36 } MonoXDomainMarshalType;
37
38 #ifndef DISABLE_REMOTING
39
40 #define OPDEF(a,b,c,d,e,f,g,h,i,j) \
41 a = i,
42
43 enum {
44 #include "mono/cil/opcode.def"
45 LAST = 0xff
46 };
47 #undef OPDEF
48
49 struct _MonoRemotingMethods {
50 MonoMethod *invoke;
51 MonoMethod *invoke_with_check;
52 MonoMethod *xdomain_invoke;
53 MonoMethod *xdomain_dispatch;
54 };
55
56 typedef struct _MonoRemotingMethods MonoRemotingMethods;
57
58 static MonoObject *
59 mono_remoting_wrapper (MonoMethod *method, gpointer *params);
60
61 static MonoException *
62 mono_remoting_update_exception (MonoException *exc);
63
64 static gint32
65 mono_marshal_set_domain_by_id (gint32 id, MonoBoolean push);
66
67 static gboolean
68 mono_marshal_check_domain_image (gint32 domain_id, MonoImage *image);
69
70 MONO_API void
71 mono_upgrade_remote_class_wrapper (MonoReflectionType *rtype, MonoTransparentProxy *tproxy);
72
73 static MonoXDomainMarshalType
74 mono_get_xdomain_marshal_type (MonoType *t);
75
76 static void
77 mono_marshal_xdomain_copy_out_value (MonoObject *src, MonoObject *dst);
78
79 static MonoReflectionType *
80 type_from_handle (MonoType *handle);
81
82 static void
83 mono_context_set_icall (MonoAppContext *new_context);
84
85 static MonoAppContext*
86 mono_context_get_icall (void);
87
88 static MonoObject*
89 mono_marshal_xdomain_copy_value (MonoObject* val_raw, MonoError *error);
90
91 /* Class lazy loading functions */
92 static GENERATE_GET_CLASS_WITH_CACHE (remoting_services, "System.Runtime.Remoting", "RemotingServices")
93 static GENERATE_GET_CLASS_WITH_CACHE (call_context, "System.Runtime.Remoting.Messaging", "CallContext")
94 static GENERATE_GET_CLASS_WITH_CACHE (context, "System.Runtime.Remoting.Contexts", "Context")
95
96 static mono_mutex_t remoting_mutex;
97 static gboolean remoting_mutex_inited;
98
99 static MonoClass *byte_array_class;
100 #ifndef DISABLE_JIT
101 static MonoMethod *method_rs_serialize, *method_rs_deserialize, *method_exc_fixexc, *method_rs_appdomain_target;
102 static MonoMethod *method_set_call_context, *method_needs_context_sink, *method_rs_serialize_exc;
103 #endif
104
105 static gpointer
106 mono_compile_method_icall (MonoMethod *method);
107
108 // func is an identifier, that names a function, and is also in jit-icall-reg.h,
109 // and therefore a field in mono_jit_icall_info and can be token pasted into an enum value.
110 //
111 // The name of func must be linkable for AOT, for example g_free does not work (monoeg_g_free instead),
112 // nor does the C++ overload fmod (mono_fmod instead). These functions therefore
113 // must be extern "C".
114 //
115 // This is not the same as other register_icall (last parameter NULL vs. #func)
116 #define register_icall(func, sig, save) \
117 (mono_register_jit_icall_info (&mono_get_jit_icall_info ()->func, func, #func, (sig), (save), NULL))
118
119 static inline void
120 remoting_lock (void)
121 {
122 g_assert (remoting_mutex_inited);
123 mono_os_mutex_lock (&remoting_mutex);
124 }
125
126 static inline void
127 remoting_unlock (void)
128 {
129 g_assert (remoting_mutex_inited);
130 mono_os_mutex_unlock (&remoting_mutex);
131 }
132
133 /*
134 * Return the hash table pointed to by VAR, lazily creating it if neccesary.
135 */
136 static GHashTable*
137 get_cache (GHashTable **var, GHashFunc hash_func, GCompareFunc equal_func)
138 {
139 if (!(*var)) {
140 remoting_lock ();
141 if (!(*var)) {
142 GHashTable *cache =
143 g_hash_table_new (hash_func, equal_func);
144 mono_memory_barrier ();
145 *var = cache;
146 }
147 remoting_unlock ();
148 }
149 return *var;
150 }
151
152 static GHashTable*
153 get_cache_full (GHashTable **var, GHashFunc hash_func, GCompareFunc equal_func, GDestroyNotify key_destroy_func, GDestroyNotify value_destroy_func)
154 {
155 if (!(*var)) {
156 remoting_lock ();
157 if (!(*var)) {
158 GHashTable *cache =
159 g_hash_table_new_full (hash_func, equal_func, key_destroy_func, value_destroy_func);
160 mono_memory_barrier ();
161 *var = cache;
162 }
163 remoting_unlock ();
164 }
165 return *var;
166 }
167
168 void
169 mono_remoting_init (void)
170 {
171 mono_os_mutex_init (&remoting_mutex);
172 remoting_mutex_inited = TRUE;
173 }
174
175 static void
176 mono_remoting_marshal_init (void)
177 {
178 ERROR_DECL (error);
179 MonoClass *klass;
180
181 static gboolean module_initialized = FALSE;
182 static gboolean icalls_registered = FALSE;
183
184 if (module_initialized)
185 return;
186
187 byte_array_class = mono_class_create_array (mono_defaults.byte_class, 1);
188
189 #ifndef DISABLE_JIT
190 klass = mono_class_get_remoting_services_class ();
191 method_rs_serialize = mono_class_get_method_from_name_checked (klass, "SerializeCallData", -1, 0, error);
192 mono_error_assert_ok (error);
193 g_assert (method_rs_serialize);
194 method_rs_deserialize = mono_class_get_method_from_name_checked (klass, "DeserializeCallData", -1, 0, error);
195 mono_error_assert_ok (error);
196 g_assert (method_rs_deserialize);
197 method_rs_serialize_exc = mono_class_get_method_from_name_checked (klass, "SerializeExceptionData", -1, 0, error);
198 mono_error_assert_ok (error);
199 g_assert (method_rs_serialize_exc);
200
201 klass = mono_defaults.real_proxy_class;
202 method_rs_appdomain_target = mono_class_get_method_from_name_checked (klass, "GetAppDomainTarget", -1, 0, error);
203 mono_error_assert_ok (error);
204 g_assert (method_rs_appdomain_target);
205
206 klass = mono_defaults.exception_class;
207 method_exc_fixexc = mono_class_get_method_from_name_checked (klass, "FixRemotingException", -1, 0, error);
208 mono_error_assert_ok (error);
209 g_assert (method_exc_fixexc);
210
211 klass = mono_class_get_call_context_class ();
212 method_set_call_context = mono_class_get_method_from_name_checked (klass, "SetCurrentCallContext", -1, 0, error);
213 mono_error_assert_ok (error);
214 g_assert (method_set_call_context);
215
216 klass = mono_class_get_context_class ();
217 method_needs_context_sink = mono_class_get_method_from_name_checked (klass, "get_NeedsContextSink", -1, 0, error);
218 mono_error_assert_ok (error);
219 g_assert (method_needs_context_sink);
220 #endif
221
222 mono_loader_lock ();
223
224 if (!icalls_registered) {
225 register_icall (type_from_handle, mono_icall_sig_object_ptr, FALSE);
226 register_icall (mono_marshal_set_domain_by_id, mono_icall_sig_int32_int32_int32, FALSE);
227 register_icall (mono_marshal_check_domain_image, mono_icall_sig_int32_int32_ptr, FALSE);
228 register_icall (ves_icall_mono_marshal_xdomain_copy_value, mono_icall_sig_object_object, FALSE);
229 register_icall (mono_marshal_xdomain_copy_out_value, mono_icall_sig_void_object_object, FALSE);
230 register_icall (mono_remoting_wrapper, mono_icall_sig_object_ptr_ptr, FALSE);
231 register_icall (mono_remoting_update_exception, mono_icall_sig_object_object, FALSE);
232 register_icall (mono_upgrade_remote_class_wrapper, mono_icall_sig_void_object_object, FALSE);
233
234 #ifndef DISABLE_JIT
235 register_icall (mono_compile_method_icall, mono_icall_sig_ptr_ptr, FALSE);
236 #endif
237
238 register_icall (mono_context_get_icall, mono_icall_sig_object, FALSE);
239 register_icall (mono_context_set_icall, mono_icall_sig_void_object, FALSE);
240 }
241
242 icalls_registered = TRUE;
243
244 mono_loader_unlock ();
245
246 module_initialized = TRUE;
247 }
248
249 // This is an icall, it will return NULL and set pending exception (in
250 // mono_type_from_handle wrapper) on failure.
251 static MonoReflectionType *
252 type_from_handle (MonoType *handle)
253 {
254 return mono_type_from_handle (handle);
255 }
256
257 #ifndef DISABLE_JIT
258 static int
259 mono_mb_emit_proxy_check (MonoMethodBuilder *mb, int branch_code)
260 {
261 int pos;
262 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoObject, vtable));
263 mono_mb_emit_byte (mb, CEE_LDIND_I);
264 mono_mb_emit_icon (mb, MONO_STRUCT_OFFSET (MonoVTable, klass));
265 mono_mb_emit_byte (mb, CEE_ADD);
266 mono_mb_emit_byte (mb, CEE_LDIND_I);
267 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
268 mono_mb_emit_byte (mb, CEE_MONO_CLASSCONST);
269 mono_mb_emit_i4 (mb, mono_mb_add_data (mb, mono_defaults.transparent_proxy_class));
270 pos = mono_mb_emit_branch (mb, branch_code);
271 return pos;
272 }
273
274 static int
275 mono_mb_emit_xdomain_check (MonoMethodBuilder *mb, int branch_code)
276 {
277 int pos;
278 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoTransparentProxy, rp));
279 mono_mb_emit_byte (mb, CEE_LDIND_REF);
280 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoRealProxy, target_domain_id));
281 mono_mb_emit_byte (mb, CEE_LDIND_I4);
282 mono_mb_emit_icon (mb, -1);
283 pos = mono_mb_emit_branch (mb, branch_code);
284 return pos;
285 }
286
287 static int
288 mono_mb_emit_contextbound_check (MonoMethodBuilder *mb, int branch_code)
289 {
290 static int offset = -1;
291 static guint8 mask;
292
293 if (offset < 0)
294 mono_class_contextbound_bit_offset (&offset, &mask);
295
296 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoTransparentProxy, remote_class));
297 mono_mb_emit_byte (mb, CEE_LDIND_REF);
298 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoRemoteClass, proxy_class));
299 mono_mb_emit_byte (mb, CEE_LDIND_REF);
300 mono_mb_emit_ldflda (mb, offset);
301 mono_mb_emit_byte (mb, CEE_LDIND_U1);
302 mono_mb_emit_icon (mb, mask);
303 mono_mb_emit_byte (mb, CEE_AND);
304 mono_mb_emit_icon (mb, 0);
305 return mono_mb_emit_branch (mb, branch_code);
306 }
307 #endif /* !DISABLE_JIT */
308
309 static inline MonoMethod*
310 mono_marshal_remoting_find_in_cache (MonoMethod *method, int wrapper_type)
311 {
312 MonoMethod *res = NULL;
313 MonoRemotingMethods *wrps = NULL;
314
315 mono_marshal_lock_internal ();
316 if (mono_method_get_wrapper_cache (method)->remoting_invoke_cache)
317 wrps = (MonoRemotingMethods *)g_hash_table_lookup (mono_method_get_wrapper_cache (method)->remoting_invoke_cache, method);
318
319 if (wrps) {
320 switch (wrapper_type) {
321 case MONO_WRAPPER_REMOTING_INVOKE: res = wrps->invoke; break;
322 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK: res = wrps->invoke_with_check; break;
323 case MONO_WRAPPER_XDOMAIN_INVOKE: res = wrps->xdomain_invoke; break;
324 case MONO_WRAPPER_XDOMAIN_DISPATCH: res = wrps->xdomain_dispatch; break;
325 }
326 }
327
328 /* it is important to do the unlock after the load from wrps, since in
329 * mono_remoting_mb_create_and_cache () we drop the marshal lock to be able
330 * to take the loader lock and some other thread may set the fields.
331 */
332 mono_marshal_unlock_internal ();
333 return res;
334 }
335
336 /* Create the method from the builder and place it in the cache */
337 static inline MonoMethod*
338 mono_remoting_mb_create_and_cache (MonoMethod *key, MonoMethodBuilder *mb,
339 MonoMethodSignature *sig, int max_stack, WrapperInfo *info)
340 {
341 MonoMethod **res = NULL;
342 MonoRemotingMethods *wrps;
343 GHashTable *cache;
344
345 cache = get_cache_full (&mono_method_get_wrapper_cache (key)->remoting_invoke_cache, mono_aligned_addr_hash, NULL, NULL, g_free);
346
347 mono_marshal_lock_internal ();
348 wrps = (MonoRemotingMethods *)g_hash_table_lookup (cache, key);
349 if (!wrps) {
350 wrps = g_new0 (MonoRemotingMethods, 1);
351 g_hash_table_insert (cache, key, wrps);
352 }
353
354 switch (mb->method->wrapper_type) {
355 case MONO_WRAPPER_REMOTING_INVOKE: res = &wrps->invoke; break;
356 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK: res = &wrps->invoke_with_check; break;
357 case MONO_WRAPPER_XDOMAIN_INVOKE: res = &wrps->xdomain_invoke; break;
358 case MONO_WRAPPER_XDOMAIN_DISPATCH: res = &wrps->xdomain_dispatch; break;
359 default: g_assert_not_reached (); break;
360 }
361 mono_marshal_unlock_internal ();
362
363 if (*res == NULL) {
364 MonoMethod *newm;
365 newm = mono_mb_create_method (mb, sig, max_stack);
366
367 mono_marshal_lock_internal ();
368 if (!*res) {
369 *res = newm;
370 mono_marshal_set_wrapper_info (*res, info);
371 mono_marshal_unlock_internal ();
372 } else {
373 mono_marshal_unlock_internal ();
374 mono_free_method (newm);
375 }
376 }
377
378 return *res;
379 }
380
381 static MonoObject *
382 mono_remoting_wrapper (MonoMethod *method, gpointer *params)
383 {
384 ERROR_DECL (error);
385 MonoMethodMessage *msg;
386 MonoTransparentProxy *this_obj;
387 MonoObject *res, *exc;
388 MonoArray *out_args;
389
390 this_obj = *((MonoTransparentProxy **)params [0]);
391
392 g_assert (this_obj);
393 g_assert (mono_object_is_transparent_proxy (this_obj));
394
395 /* skip the this pointer */
396 params++;
397
398 if (mono_class_is_contextbound (this_obj->remote_class->proxy_class) && this_obj->rp->context == (MonoObject *) mono_context_get ())
399 {
400 int i;
401 MonoMethodSignature *sig = mono_method_signature_internal (method);
402 int count = sig->param_count;
403 gpointer* mparams = g_newa (gpointer, count);
404
405 for (i=0; i<count; i++) {
406 MonoClass *klass = mono_class_from_mono_type_internal (sig->params [i]);
407 if (m_class_is_valuetype (klass)) {
408 if (sig->params [i]->byref) {
409 mparams[i] = *((gpointer *)params [i]);
410 } else {
411 /* runtime_invoke expects a boxed instance */
412 if (mono_class_is_nullable (mono_class_from_mono_type_internal (sig->params [i]))) {
413 mparams[i] = mono_nullable_box ((guint8 *)params [i], klass, error);
414 goto_if_nok (error, fail);
415 } else
416 mparams[i] = params [i];
417 }
418 } else {
419 mparams[i] = *((gpointer**)params [i]);
420 }
421 }
422
423 res = mono_runtime_invoke_checked (method, m_class_is_valuetype (method->klass)? mono_object_unbox_internal ((MonoObject*)this_obj): this_obj, mparams, error);
424 goto_if_nok (error, fail);
425
426 return res;
427 }
428
429 msg = mono_method_call_message_new (method, params, NULL, NULL, NULL, error);
430 goto_if_nok (error, fail);
431
432 res = mono_remoting_invoke ((MonoObject *)this_obj->rp, msg, &exc, &out_args, error);
433 goto_if_nok (error, fail);
434
435 if (exc) {
436 error_init (error);
437 exc = (MonoObject*) mono_remoting_update_exception ((MonoException*)exc);
438 mono_error_set_exception_instance (error, (MonoException *)exc);
439 goto fail;
440 }
441
442 mono_method_return_message_restore (method, params, out_args, error);
443 goto_if_nok (error, fail);
444
445 return res;
446 fail:
447 mono_error_set_pending_exception (error);
448 return NULL;
449 }
450
451 /*
452 * Handles exception transformation at appdomain call boundary.
453 * Note this is called from target appdomain inside xdomain wrapper, but from
454 * source domain in the mono_remoting_wrapper slowpath.
455 */
456 static MonoException *
457 mono_remoting_update_exception (MonoException *exc)
458 {
459 MonoInternalThread *thread;
460 MonoClass *klass = mono_object_class (exc);
461
462 /* Serialization error can only happen when still in the target appdomain */
463 if (!(mono_class_get_flags (klass) & TYPE_ATTRIBUTE_SERIALIZABLE)) {
464 MonoException *ret;
465 char *aname = mono_stringify_assembly_name (&m_class_get_image (klass)->assembly->aname);
466 char *message = g_strdup_printf ("Type '%s' in Assembly '%s' is not marked as serializable", m_class_get_name (klass), aname);
467 ret = mono_get_exception_serialization (message);
468 g_free (aname);
469 g_free (message);
470 return ret;
471 }
472
473 thread = mono_thread_internal_current ();
474 if (mono_object_class (exc) == mono_defaults.threadabortexception_class &&
475 thread->flags & MONO_THREAD_FLAG_APPDOMAIN_ABORT) {
476 mono_thread_internal_reset_abort (thread);
477 return mono_get_exception_appdomain_unloaded ();
478 }
479
480 return exc;
481 }
482
483 /**
484 * mono_marshal_get_remoting_invoke:
485 */
486 MonoMethod *
487 mono_marshal_get_remoting_invoke (MonoMethod *method, MonoError *error)
488 {
489 MonoMethodSignature *sig;
490 MonoMethodBuilder *mb;
491 MonoMethod *res;
492 int params_var;
493 WrapperInfo *info;
494
495 g_assert (method);
496 error_init (error);
497
498 if (method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE || method->wrapper_type == MONO_WRAPPER_XDOMAIN_INVOKE)
499 return method;
500
501 /* this seems to be the best plase to put this, as all remoting invokes seem to get filtered through here */
502 #ifndef DISABLE_COM
503 if (mono_class_is_com_object (method->klass) || method->klass == mono_class_try_get_com_object_class ()) {
504 MonoVTable *vtable = mono_class_vtable_checked (mono_domain_get (), method->klass, error);
505 return_val_if_nok (error, NULL);
506
507 if (!mono_vtable_is_remote (vtable)) {
508 return mono_cominterop_get_invoke (method);
509 }
510 }
511 #endif
512
513 sig = mono_signature_no_pinvoke (method);
514
515 /* we cant remote methods without this pointer */
516 if (!sig->hasthis)
517 return method;
518
519 if ((res = mono_marshal_remoting_find_in_cache (method, MONO_WRAPPER_REMOTING_INVOKE)))
520 return res;
521
522 mono_remoting_marshal_init ();
523
524 mb = mono_mb_new (method->klass, method->name, MONO_WRAPPER_REMOTING_INVOKE);
525
526 #ifndef DISABLE_JIT
527 mb->method->save_lmf = 1;
528
529 params_var = mono_mb_emit_save_args (mb, sig, TRUE);
530
531 mono_mb_emit_ptr (mb, method);
532 mono_mb_emit_ldloc (mb, params_var);
533 mono_mb_emit_icall (mb, mono_remoting_wrapper);
534 // FIXME: this interrupt checkpoint code is a no-op since 'mb'
535 // is a MONO_WRAPPER_REMOTING_INVOKE, and
536 // mono_thread_interruption_checkpoint_request (FALSE)
537 // considers such wrappers "protected" and always returns
538 // NULL as if there's no pending interruption.
539 mono_marshal_emit_thread_interrupt_checkpoint (mb);
540
541 if (sig->ret->type == MONO_TYPE_VOID) {
542 mono_mb_emit_byte (mb, CEE_POP);
543 mono_mb_emit_byte (mb, CEE_RET);
544 } else {
545 mono_mb_emit_restore_result (mb, sig->ret);
546 }
547 #endif
548
549 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_NONE);
550 info->d.remoting.method = method;
551 res = mono_remoting_mb_create_and_cache (method, mb, sig, sig->param_count + 16, info);
552 mono_mb_free (mb);
553
554 return res;
555 }
556
557 /* mono_marshal_xdomain_copy_out_value()
558 * Copies the contents of the src instance into the dst instance. src and dst
559 * must have the same type, and if they are arrays, the same size.
560 *
561 * This is an icall, it may use mono_error_set_pending_exception
562 */
563 static void
564 mono_marshal_xdomain_copy_out_value (MonoObject *src, MonoObject *dst)
565 {
566 ERROR_DECL (error);
567 if (src == NULL || dst == NULL) return;
568
569 g_assert (mono_object_class (src) == mono_object_class (dst));
570
571 switch (m_class_get_byval_arg (mono_object_class (src))->type) {
572 case MONO_TYPE_ARRAY:
573 case MONO_TYPE_SZARRAY: {
574 int mt = mono_get_xdomain_marshal_type (m_class_get_byval_arg (m_class_get_element_class (mono_object_class (src))));
575 if (mt == MONO_MARSHAL_SERIALIZE) return;
576 if (mt == MONO_MARSHAL_COPY) {
577 int i, len = mono_array_length_internal ((MonoArray *)dst);
578 for (i = 0; i < len; i++) {
579 MonoObject *item = (MonoObject *)mono_array_get_internal ((MonoArray *)src, gpointer, i);
580 MonoObject *item_copy = mono_marshal_xdomain_copy_value (item, error);
581 if (mono_error_set_pending_exception (error))
582 return;
583 mono_array_setref_internal ((MonoArray *)dst, i, item_copy);
584 }
585 } else {
586 mono_array_full_copy ((MonoArray *)src, (MonoArray *)dst);
587 }
588 return;
589 }
590 default:
591 break;
592 }
593 }
594
595 #if !defined (DISABLE_JIT)
596 static void
597 mono_marshal_emit_xdomain_copy_value (MonoMethodBuilder *mb, MonoClass *pclass)
598 {
599 mono_mb_emit_icall (mb, ves_icall_mono_marshal_xdomain_copy_value);
600 mono_mb_emit_op (mb, CEE_CASTCLASS, pclass);
601 }
602
603 static void
604 mono_marshal_emit_xdomain_copy_out_value (MonoMethodBuilder *mb, MonoClass *pclass)
605 {
606 mono_mb_emit_icall (mb, mono_marshal_xdomain_copy_out_value);
607 }
608 #endif
609
610 /* mono_marshal_supports_fast_xdomain()
611 * Returns TRUE if the method can use the fast xdomain wrapper.
612 */
613 static gboolean
614 mono_marshal_supports_fast_xdomain (MonoMethod *method)
615 {
616 return !mono_class_is_contextbound (method->klass) &&
617 !((method->flags & METHOD_ATTRIBUTE_SPECIAL_NAME) && (strcmp (".ctor", method->name) == 0));
618 }
619
620 static gint32
621 mono_marshal_set_domain_by_id (gint32 id, MonoBoolean push)
622 {
623 MonoDomain *current_domain = mono_domain_get ();
624 MonoDomain *domain = mono_domain_get_by_id (id);
625
626 if (!domain || !mono_domain_set_fast (domain, FALSE)) {
627 mono_set_pending_exception (mono_get_exception_appdomain_unloaded ());
628 return 0;
629 }
630
631 if (push)
632 mono_thread_push_appdomain_ref (domain);
633 else
634 mono_thread_pop_appdomain_ref ();
635
636 return current_domain->domain_id;
637 }
638
639 #if !defined (DISABLE_JIT)
640 static void
641 mono_marshal_emit_switch_domain (MonoMethodBuilder *mb)
642 {
643 mono_mb_emit_icall (mb, mono_marshal_set_domain_by_id);
644 }
645
646 gpointer
647 mono_compile_method_icall (MonoMethod *method)
648 {
649 ERROR_DECL (error);
650 gpointer result = mono_compile_method_checked (method, error);
651 mono_error_set_pending_exception (error);
652 return result;
653 }
654
655 /* mono_marshal_emit_load_domain_method ()
656 * Loads into the stack a pointer to the code of the provided method for
657 * the current domain.
658 */
659 static void
660 mono_marshal_emit_load_domain_method (MonoMethodBuilder *mb, MonoMethod *method)
661 {
662 /* We need a pointer to the method for the running domain (not the domain
663 * that compiles the method).
664 */
665 mono_mb_emit_ptr (mb, method);
666 mono_mb_emit_icall (mb, mono_compile_method_icall);
667 }
668 #endif
669
670 /* mono_marshal_check_domain_image ()
671 * Returns TRUE if the image is loaded in the specified
672 * application domain.
673 */
674 static gboolean
675 mono_marshal_check_domain_image (gint32 domain_id, MonoImage *image)
676 {
677 MonoAssembly* ass;
678 GSList *tmp;
679
680 MonoDomain *domain = mono_domain_get_by_id (domain_id);
681 if (!domain)
682 return FALSE;
683
684 mono_domain_assemblies_lock (domain);
685 for (tmp = domain->domain_assemblies; tmp; tmp = tmp->next) {
686 ass = (MonoAssembly *)tmp->data;
687 if (ass->image == image)
688 break;
689 }
690 mono_domain_assemblies_unlock (domain);
691
692 return tmp != NULL;
693 }
694
695 /* mono_marshal_get_xappdomain_dispatch ()
696 * Generates a method that dispatches a method call from another domain into
697 * the current domain.
698 */
699 static MonoMethod *
700 mono_marshal_get_xappdomain_dispatch (MonoMethod *method, int *marshal_types, int complex_count, int complex_out_count, int ret_marshal_type)
701 {
702 MonoMethodSignature *sig, *csig;
703 MonoMethodBuilder *mb;
704 MonoMethod *res;
705 int i, j, param_index, copy_locals_base;
706 MonoClass *ret_class = NULL;
707 int loc_array=0, loc_return=0, loc_serialized_exc=0;
708 MonoExceptionClause *main_clause;
709 int pos, pos_leave;
710 gboolean copy_return;
711 WrapperInfo *info;
712
713 if ((res = mono_marshal_remoting_find_in_cache (method, MONO_WRAPPER_XDOMAIN_DISPATCH)))
714 return res;
715
716 sig = mono_method_signature_internal (method);
717 copy_return = (sig->ret->type != MONO_TYPE_VOID && ret_marshal_type != MONO_MARSHAL_SERIALIZE);
718
719 j = 0;
720 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 3 + sig->param_count - complex_count);
721 csig->params [j++] = mono_get_object_type ();
722 csig->params [j++] = m_class_get_this_arg (byte_array_class);
723 csig->params [j++] = m_class_get_this_arg (byte_array_class);
724 for (i = 0; i < sig->param_count; i++) {
725 if (marshal_types [i] != MONO_MARSHAL_SERIALIZE)
726 csig->params [j++] = sig->params [i];
727 }
728 if (copy_return)
729 csig->ret = sig->ret;
730 else
731 csig->ret = mono_get_void_type ();
732 csig->pinvoke = 1;
733 csig->hasthis = FALSE;
734
735 mb = mono_mb_new (method->klass, method->name, MONO_WRAPPER_XDOMAIN_DISPATCH);
736 mb->method->save_lmf = 1;
737
738 #ifndef DISABLE_JIT
739 /* Locals */
740
741 loc_serialized_exc = mono_mb_add_local (mb, m_class_get_byval_arg (byte_array_class));
742 if (complex_count > 0)
743 loc_array = mono_mb_add_local (mb, mono_get_object_type ());
744 if (sig->ret->type != MONO_TYPE_VOID) {
745 loc_return = mono_mb_add_local (mb, sig->ret);
746 ret_class = mono_class_from_mono_type_internal (sig->ret);
747 }
748
749 /* try */
750
751 main_clause = (MonoExceptionClause *)mono_image_alloc0 (m_class_get_image (method->klass), sizeof (MonoExceptionClause));
752 main_clause->try_offset = mono_mb_get_label (mb);
753
754 /* Clean the call context */
755
756 mono_mb_emit_byte (mb, CEE_LDNULL);
757 mono_mb_emit_managed_call (mb, method_set_call_context, NULL);
758 mono_mb_emit_byte (mb, CEE_POP);
759
760 /* Deserialize call data */
761
762 mono_mb_emit_ldarg (mb, 1);
763 mono_mb_emit_byte (mb, CEE_LDIND_REF);
764 mono_mb_emit_byte (mb, CEE_DUP);
765 pos = mono_mb_emit_short_branch (mb, CEE_BRFALSE_S);
766
767 mono_marshal_emit_xdomain_copy_value (mb, byte_array_class);
768 mono_mb_emit_managed_call (mb, method_rs_deserialize, NULL);
769
770 if (complex_count > 0)
771 mono_mb_emit_stloc (mb, loc_array);
772 else
773 mono_mb_emit_byte (mb, CEE_POP);
774
775 mono_mb_patch_short_branch (mb, pos);
776
777 /* Get the target object */
778
779 mono_mb_emit_ldarg (mb, 0);
780 mono_mb_emit_managed_call (mb, method_rs_appdomain_target, NULL);
781
782 /* Load the arguments */
783
784 copy_locals_base = mb->locals;
785 param_index = 3; // Index of the first non-serialized parameter of this wrapper
786 j = 0;
787 for (i = 0; i < sig->param_count; i++) {
788 MonoType *pt = sig->params [i];
789 MonoClass *pclass = mono_class_from_mono_type_internal (pt);
790 switch (marshal_types [i]) {
791 case MONO_MARSHAL_SERIALIZE: {
792 /* take the value from the serialized array */
793 mono_mb_emit_ldloc (mb, loc_array);
794 mono_mb_emit_icon (mb, j++);
795 if (pt->byref) {
796 if (m_class_is_valuetype (pclass)) {
797 mono_mb_emit_byte (mb, CEE_LDELEM_REF);
798 mono_mb_emit_op (mb, CEE_UNBOX, pclass);
799 } else {
800 mono_mb_emit_op (mb, CEE_LDELEMA, pclass);
801 }
802 } else {
803 if (m_class_is_valuetype (pclass)) {
804 mono_mb_emit_byte (mb, CEE_LDELEM_REF);
805 mono_mb_emit_op (mb, CEE_UNBOX, pclass);
806 mono_mb_emit_op (mb, CEE_LDOBJ, pclass);
807 } else {
808 mono_mb_emit_byte (mb, CEE_LDELEM_REF);
809 if (pclass != mono_defaults.object_class) {
810 mono_mb_emit_op (mb, CEE_CASTCLASS, pclass);
811 }
812 }
813 }
814 break;
815 }
816 case MONO_MARSHAL_COPY_OUT: {
817 /* Keep a local copy of the value since we need to copy it back after the call */
818 int copy_local = mono_mb_add_local (mb, m_class_get_byval_arg (pclass));
819 mono_mb_emit_ldarg (mb, param_index++);
820 mono_marshal_emit_xdomain_copy_value (mb, pclass);
821 mono_mb_emit_byte (mb, CEE_DUP);
822 mono_mb_emit_stloc (mb, copy_local);
823 break;
824 }
825 case MONO_MARSHAL_COPY: {
826 mono_mb_emit_ldarg (mb, param_index);
827 if (pt->byref) {
828 mono_mb_emit_byte (mb, CEE_DUP);
829 mono_mb_emit_byte (mb, CEE_DUP);
830 mono_mb_emit_byte (mb, CEE_LDIND_REF);
831 mono_marshal_emit_xdomain_copy_value (mb, pclass);
832 mono_mb_emit_byte (mb, CEE_STIND_REF);
833 } else {
834 mono_marshal_emit_xdomain_copy_value (mb, pclass);
835 }
836 param_index++;
837 break;
838 }
839 case MONO_MARSHAL_NONE:
840 mono_mb_emit_ldarg (mb, param_index++);
841 break;
842 }
843 }
844
845 /* Make the call to the real object */
846
847 mono_marshal_emit_thread_force_interrupt_checkpoint (mb);
848
849 mono_mb_emit_op (mb, CEE_CALLVIRT, method);
850
851 if (sig->ret->type != MONO_TYPE_VOID)
852 mono_mb_emit_stloc (mb, loc_return);
853
854 /* copy back MONO_MARSHAL_COPY_OUT parameters */
855
856 j = 0;
857 param_index = 3;
858 for (i = 0; i < sig->param_count; i++) {
859 if (marshal_types [i] == MONO_MARSHAL_SERIALIZE) continue;
860 if (marshal_types [i] == MONO_MARSHAL_COPY_OUT) {
861 mono_mb_emit_ldloc (mb, copy_locals_base + (j++));
862 mono_mb_emit_ldarg (mb, param_index);
863 mono_marshal_emit_xdomain_copy_out_value (mb, mono_class_from_mono_type_internal (sig->params [i]));
864 }
865 param_index++;
866 }
867
868 /* Serialize the return values */
869
870 if (complex_out_count > 0) {
871 /* Reset parameters in the array that don't need to be serialized back */
872 j = 0;
873 for (i = 0; i < sig->param_count; i++) {
874 if (marshal_types[i] != MONO_MARSHAL_SERIALIZE) continue;
875 if (!sig->params [i]->byref) {
876 mono_mb_emit_ldloc (mb, loc_array);
877 mono_mb_emit_icon (mb, j);
878 mono_mb_emit_byte (mb, CEE_LDNULL);
879 mono_mb_emit_byte (mb, CEE_STELEM_REF);
880 }
881 j++;
882 }
883
884 /* Add the return value to the array */
885
886 if (ret_marshal_type == MONO_MARSHAL_SERIALIZE) {
887 mono_mb_emit_ldloc (mb, loc_array);
888 mono_mb_emit_icon (mb, complex_count); /* The array has an additional slot to hold the ret value */
889 mono_mb_emit_ldloc (mb, loc_return);
890
891 g_assert (ret_class); /*FIXME properly fail here*/
892 if (m_class_is_valuetype (ret_class)) {
893 mono_mb_emit_op (mb, CEE_BOX, ret_class);
894 }
895 mono_mb_emit_byte (mb, CEE_STELEM_REF);
896 }
897
898 /* Serialize */
899
900 mono_mb_emit_ldarg (mb, 1);
901 mono_mb_emit_ldloc (mb, loc_array);
902 mono_mb_emit_managed_call (mb, method_rs_serialize, NULL);
903 mono_mb_emit_byte (mb, CEE_STIND_REF);
904 } else if (ret_marshal_type == MONO_MARSHAL_SERIALIZE) {
905 mono_mb_emit_ldarg (mb, 1);
906 mono_mb_emit_ldloc (mb, loc_return);
907 if (m_class_is_valuetype (ret_class)) {
908 mono_mb_emit_op (mb, CEE_BOX, ret_class);
909 }
910 mono_mb_emit_managed_call (mb, method_rs_serialize, NULL);
911 mono_mb_emit_byte (mb, CEE_STIND_REF);
912 } else {
913 mono_mb_emit_ldarg (mb, 1);
914 mono_mb_emit_byte (mb, CEE_LDNULL);
915 mono_mb_emit_managed_call (mb, method_rs_serialize, NULL);
916 mono_mb_emit_byte (mb, CEE_STIND_REF);
917 }
918
919 mono_mb_emit_ldarg (mb, 2);
920 mono_mb_emit_byte (mb, CEE_LDNULL);
921 mono_mb_emit_byte (mb, CEE_STIND_REF);
922 pos_leave = mono_mb_emit_branch (mb, CEE_LEAVE);
923
924 /* Main exception catch */
925 main_clause->flags = MONO_EXCEPTION_CLAUSE_NONE;
926 main_clause->try_len = mono_mb_get_pos (mb) - main_clause->try_offset;
927 main_clause->data.catch_class = mono_defaults.object_class;
928
929 /* handler code */
930 main_clause->handler_offset = mono_mb_get_label (mb);
931
932 mono_mb_emit_icall (mb, mono_remoting_update_exception);
933 mono_mb_emit_op (mb, CEE_CASTCLASS, mono_defaults.exception_class);
934 mono_mb_emit_managed_call (mb, method_rs_serialize_exc, NULL);
935 mono_mb_emit_stloc (mb, loc_serialized_exc);
936 mono_mb_emit_ldarg (mb, 2);
937 mono_mb_emit_ldloc (mb, loc_serialized_exc);
938 mono_mb_emit_byte (mb, CEE_STIND_REF);
939 mono_mb_emit_branch (mb, CEE_LEAVE);
940
941 main_clause->handler_len = mono_mb_get_pos (mb) - main_clause->handler_offset;
942 /* end catch */
943 mono_mb_patch_branch (mb, pos_leave);
944
945 if (copy_return)
946 mono_mb_emit_ldloc (mb, loc_return);
947
948 mono_mb_emit_byte (mb, CEE_RET);
949
950 mono_mb_set_clauses (mb, 1, main_clause);
951 #endif
952
953 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_NONE);
954 info->d.remoting.method = method;
955 res = mono_remoting_mb_create_and_cache (method, mb, csig, csig->param_count + 16, info);
956 mono_mb_free (mb);
957
958 return res;
959 }
960
961 /**
962 * mono_marshal_get_xappdomain_invoke:
963 * Generates a fast remoting wrapper for cross app domain calls.
964 */
965 MonoMethod *
966 mono_marshal_get_xappdomain_invoke (MonoMethod *method, MonoError *error)
967 {
968 MonoMethodSignature *sig;
969 MonoMethodBuilder *mb;
970 MonoMethod *res;
971 int i, j, complex_count, complex_out_count, copy_locals_base;
972 int *marshal_types;
973 MonoClass *ret_class = NULL;
974 MonoMethod *xdomain_method;
975 int ret_marshal_type = MONO_MARSHAL_NONE;
976 int loc_array=0, loc_serialized_data=-1, loc_real_proxy;
977 int loc_old_domainid, loc_domainid, loc_return=0, loc_serialized_exc=0, loc_context;
978 int pos, pos_dispatch, pos_noex;
979 gboolean copy_return = FALSE;
980 WrapperInfo *info;
981
982 g_assert (method);
983 error_init (error);
984
985 if (method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE || method->wrapper_type == MONO_WRAPPER_XDOMAIN_INVOKE)
986 return method;
987
988 /* we cant remote methods without this pointer */
989 if (!mono_method_signature_internal (method)->hasthis)
990 return method;
991
992 mono_remoting_marshal_init ();
993
994 if (!mono_marshal_supports_fast_xdomain (method))
995 return mono_marshal_get_remoting_invoke (method, error);
996
997 if ((res = mono_marshal_remoting_find_in_cache (method, MONO_WRAPPER_XDOMAIN_INVOKE)))
998 return res;
999
1000 sig = mono_signature_no_pinvoke (method);
1001
1002 mb = mono_mb_new (method->klass, method->name, MONO_WRAPPER_XDOMAIN_INVOKE);
1003 mb->method->save_lmf = 1;
1004
1005 /* Count the number of parameters that need to be serialized */
1006
1007 marshal_types = g_newa (int, sig->param_count);
1008 complex_count = complex_out_count = 0;
1009 gboolean has_byreflike = FALSE;
1010 for (i = 0; i < sig->param_count; i++) {
1011 MonoType *ptype = sig->params[i];
1012 int mt = mono_get_xdomain_marshal_type (ptype);
1013
1014 /* If the [Out] attribute is applied to a parameter that can be internally copied,
1015 * the copy will be made by reusing the original object instance
1016 */
1017 if ((ptype->attrs & PARAM_ATTRIBUTE_OUT) != 0 && mt == MONO_MARSHAL_COPY && !ptype->byref)
1018 mt = MONO_MARSHAL_COPY_OUT;
1019 else if (mt == MONO_MARSHAL_SERIALIZE) {
1020 complex_count++;
1021 if (ptype->byref) complex_out_count++;
1022 }
1023 marshal_types [i] = mt;
1024 /* Can't make a xdomain wrapper for a method with an IsByRefLike result */
1025 if (!ptype->byref && m_class_is_byreflike (mono_class_from_mono_type_internal (ptype))) {
1026 has_byreflike = TRUE;
1027 }
1028 }
1029
1030 if (sig->ret->type != MONO_TYPE_VOID) {
1031 ret_marshal_type = mono_get_xdomain_marshal_type (sig->ret);
1032 ret_class = mono_class_from_mono_type_internal (sig->ret);
1033 copy_return = ret_marshal_type != MONO_MARSHAL_SERIALIZE;
1034 }
1035
1036 /* Can't make a xdomain wrapper for a method with an IsByRefLike result */
1037 if (!sig->ret->byref && m_class_is_byreflike (mono_class_from_mono_type_internal (sig->ret))) {
1038 has_byreflike = TRUE;
1039 }
1040
1041 /* Locals */
1042
1043 #ifndef DISABLE_JIT
1044 if (has_byreflike) {
1045 /* Make a wrapper that throws a NotImplementedException if it's ever called */
1046 mono_mb_emit_exception (mb, "NotImplementedException", "Cross AppDomain calls with IsByRefLike parameter or return types are not implemented");
1047 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_NONE);
1048 info->d.remoting.method = method;
1049 res = mono_remoting_mb_create_and_cache (method, mb, sig, sig->param_count + 16, info);
1050 mono_mb_free (mb);
1051 return res;
1052 }
1053
1054
1055 MonoType *object_type = mono_get_object_type ();
1056 MonoType *byte_array_type = m_class_get_byval_arg (byte_array_class);
1057 MonoType *int32_type = mono_get_int32_type ();
1058 if (complex_count > 0)
1059 loc_array = mono_mb_add_local (mb, object_type);
1060 loc_serialized_data = mono_mb_add_local (mb, byte_array_type);
1061 loc_real_proxy = mono_mb_add_local (mb, object_type);
1062 if (copy_return)
1063 loc_return = mono_mb_add_local (mb, sig->ret);
1064 loc_old_domainid = mono_mb_add_local (mb, int32_type);
1065 loc_domainid = mono_mb_add_local (mb, int32_type);
1066 loc_serialized_exc = mono_mb_add_local (mb, byte_array_type);
1067 loc_context = mono_mb_add_local (mb, object_type);
1068
1069 /* Save thread domain data */
1070
1071 mono_mb_emit_icall (mb, mono_context_get_icall);
1072 mono_mb_emit_byte (mb, CEE_DUP);
1073 mono_mb_emit_stloc (mb, loc_context);
1074
1075 /* If the thread is not running in the default context, it needs to go
1076 * through the whole remoting sink, since the context is going to change
1077 */
1078 mono_mb_emit_managed_call (mb, method_needs_context_sink, NULL);
1079 pos = mono_mb_emit_short_branch (mb, CEE_BRTRUE_S);
1080
1081 /* Another case in which the fast path can't be used: when the target domain
1082 * has a different image for the same assembly.
1083 */
1084
1085 /* Get the target domain id */
1086
1087 mono_mb_emit_ldarg (mb, 0);
1088 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoTransparentProxy, rp));
1089 mono_mb_emit_byte (mb, CEE_LDIND_REF);
1090 mono_mb_emit_byte (mb, CEE_DUP);
1091 mono_mb_emit_stloc (mb, loc_real_proxy);
1092
1093 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoRealProxy, target_domain_id));
1094 mono_mb_emit_byte (mb, CEE_LDIND_I4);
1095 mono_mb_emit_stloc (mb, loc_domainid);
1096
1097 /* Check if the target domain has the same image for the required assembly */
1098
1099 mono_mb_emit_ldloc (mb, loc_domainid);
1100 mono_mb_emit_ptr (mb, m_class_get_image (method->klass));
1101 mono_mb_emit_icall (mb, mono_marshal_check_domain_image);
1102 pos_dispatch = mono_mb_emit_short_branch (mb, CEE_BRTRUE_S);
1103
1104 /* Use the whole remoting sink to dispatch this message */
1105
1106 mono_mb_patch_short_branch (mb, pos);
1107
1108 mono_mb_emit_ldarg (mb, 0);
1109 for (i = 0; i < sig->param_count; i++)
1110 mono_mb_emit_ldarg (mb, i + 1);
1111
1112 MonoMethod * remoting_invoke_method = mono_marshal_get_remoting_invoke (method, error);
1113 if (!is_ok (error)) {
1114 mono_mb_free (mb);
1115 return NULL;
1116 }
1117 mono_mb_emit_managed_call (mb, remoting_invoke_method, NULL);
1118 mono_mb_emit_byte (mb, CEE_RET);
1119 mono_mb_patch_short_branch (mb, pos_dispatch);
1120
1121 /* Create the array that will hold the parameters to be serialized */
1122
1123 if (complex_count > 0) {
1124 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 */
1125 mono_mb_emit_op (mb, CEE_NEWARR, mono_defaults.object_class);
1126
1127 j = 0;
1128 for (i = 0; i < sig->param_count; i++) {
1129 MonoClass *pclass;
1130 if (marshal_types [i] != MONO_MARSHAL_SERIALIZE) continue;
1131 pclass = mono_class_from_mono_type_internal (sig->params[i]);
1132 mono_mb_emit_byte (mb, CEE_DUP);
1133 mono_mb_emit_icon (mb, j);
1134 mono_mb_emit_ldarg (mb, i + 1); /* 0=this */
1135 if (sig->params[i]->byref) {
1136 if (m_class_is_valuetype (pclass))
1137 mono_mb_emit_op (mb, CEE_LDOBJ, pclass);
1138 else
1139 mono_mb_emit_byte (mb, CEE_LDIND_REF);
1140 }
1141 if (m_class_is_valuetype (pclass))
1142 mono_mb_emit_op (mb, CEE_BOX, pclass);
1143 mono_mb_emit_byte (mb, CEE_STELEM_REF);
1144 j++;
1145 }
1146 mono_mb_emit_stloc (mb, loc_array);
1147
1148 /* Serialize parameters */
1149
1150 mono_mb_emit_ldloc (mb, loc_array);
1151 mono_mb_emit_managed_call (mb, method_rs_serialize, NULL);
1152 mono_mb_emit_stloc (mb, loc_serialized_data);
1153 } else {
1154 mono_mb_emit_byte (mb, CEE_LDNULL);
1155 mono_mb_emit_managed_call (mb, method_rs_serialize, NULL);
1156 mono_mb_emit_stloc (mb, loc_serialized_data);
1157 }
1158
1159 /* switch domain */
1160
1161 mono_mb_emit_ldloc (mb, loc_domainid);
1162 mono_mb_emit_byte (mb, CEE_LDC_I4_1);
1163 mono_marshal_emit_switch_domain (mb);
1164 mono_mb_emit_stloc (mb, loc_old_domainid);
1165
1166 /* Load the arguments */
1167
1168 mono_mb_emit_ldloc (mb, loc_real_proxy);
1169 mono_mb_emit_ldloc_addr (mb, loc_serialized_data);
1170 mono_mb_emit_ldloc_addr (mb, loc_serialized_exc);
1171
1172 copy_locals_base = mb->locals;
1173 for (i = 0; i < sig->param_count; i++) {
1174 switch (marshal_types [i]) {
1175 case MONO_MARSHAL_SERIALIZE:
1176 continue;
1177 case MONO_MARSHAL_COPY: {
1178 mono_mb_emit_ldarg (mb, i+1);
1179 if (sig->params [i]->byref) {
1180 /* make a local copy of the byref parameter. The real parameter
1181 * will be updated after the xdomain call
1182 */
1183 MonoClass *pclass = mono_class_from_mono_type_internal (sig->params [i]);
1184 int copy_local = mono_mb_add_local (mb, m_class_get_byval_arg (pclass));
1185 mono_mb_emit_byte (mb, CEE_LDIND_REF);
1186 mono_mb_emit_stloc (mb, copy_local);
1187 mono_mb_emit_ldloc_addr (mb, copy_local);
1188 }
1189 break;
1190 }
1191 case MONO_MARSHAL_COPY_OUT:
1192 case MONO_MARSHAL_NONE:
1193 mono_mb_emit_ldarg (mb, i+1);
1194 break;
1195 }
1196 }
1197
1198 /* Make the call to the invoke wrapper in the target domain */
1199
1200 xdomain_method = mono_marshal_get_xappdomain_dispatch (method, marshal_types, complex_count, complex_out_count, ret_marshal_type);
1201 mono_marshal_emit_load_domain_method (mb, xdomain_method);
1202 mono_mb_emit_calli (mb, mono_method_signature_internal (xdomain_method));
1203
1204 if (copy_return)
1205 mono_mb_emit_stloc (mb, loc_return);
1206
1207 /* Switch domain */
1208
1209 mono_mb_emit_ldloc (mb, loc_old_domainid);
1210 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
1211 mono_marshal_emit_switch_domain (mb);
1212 mono_mb_emit_byte (mb, CEE_POP);
1213
1214 /* Restore thread domain data */
1215
1216 mono_mb_emit_ldloc (mb, loc_context);
1217 mono_mb_emit_icall (mb, mono_context_set_icall);
1218
1219 /* if (loc_serialized_exc != null) ... */
1220
1221 mono_mb_emit_ldloc (mb, loc_serialized_exc);
1222 pos_noex = mono_mb_emit_short_branch (mb, CEE_BRFALSE_S);
1223
1224 mono_mb_emit_ldloc (mb, loc_serialized_exc);
1225 mono_marshal_emit_xdomain_copy_value (mb, byte_array_class);
1226 mono_mb_emit_managed_call (mb, method_rs_deserialize, NULL);
1227 mono_mb_emit_op (mb, CEE_CASTCLASS, mono_defaults.exception_class);
1228 mono_mb_emit_managed_call (mb, method_exc_fixexc, NULL);
1229 mono_mb_emit_byte (mb, CEE_THROW);
1230 mono_mb_patch_short_branch (mb, pos_noex);
1231
1232 /* copy back non-serialized output parameters */
1233
1234 j = 0;
1235 for (i = 0; i < sig->param_count; i++) {
1236 if (!sig->params [i]->byref || marshal_types [i] != MONO_MARSHAL_COPY) continue;
1237 mono_mb_emit_ldarg (mb, i + 1);
1238 mono_mb_emit_ldloc (mb, copy_locals_base + (j++));
1239 mono_marshal_emit_xdomain_copy_value (mb, mono_class_from_mono_type_internal (sig->params [i]));
1240 mono_mb_emit_byte (mb, CEE_STIND_REF);
1241 }
1242
1243 /* Deserialize out parameters */
1244
1245 if (complex_out_count > 0) {
1246 mono_mb_emit_ldloc (mb, loc_serialized_data);
1247 mono_marshal_emit_xdomain_copy_value (mb, byte_array_class);
1248 mono_mb_emit_managed_call (mb, method_rs_deserialize, NULL);
1249 mono_mb_emit_stloc (mb, loc_array);
1250
1251 /* Copy back output parameters and return type */
1252
1253 j = 0;
1254 for (i = 0; i < sig->param_count; i++) {
1255 if (marshal_types [i] != MONO_MARSHAL_SERIALIZE) continue;
1256 if (sig->params[i]->byref) {
1257 MonoClass *pclass = mono_class_from_mono_type_internal (sig->params [i]);
1258 mono_mb_emit_ldarg (mb, i + 1);
1259 mono_mb_emit_ldloc (mb, loc_array);
1260 mono_mb_emit_icon (mb, j);
1261 mono_mb_emit_byte (mb, CEE_LDELEM_REF);
1262 if (m_class_is_valuetype (pclass)) {
1263 mono_mb_emit_op (mb, CEE_UNBOX, pclass);
1264 mono_mb_emit_op (mb, CEE_LDOBJ, pclass);
1265 mono_mb_emit_op (mb, CEE_STOBJ, pclass);
1266 } else {
1267 if (pclass != mono_defaults.object_class)
1268 mono_mb_emit_op (mb, CEE_CASTCLASS, pclass);
1269 mono_mb_emit_byte (mb, CEE_STIND_REF);
1270 }
1271 }
1272 j++;
1273 }
1274
1275 if (ret_marshal_type == MONO_MARSHAL_SERIALIZE) {
1276 mono_mb_emit_ldloc (mb, loc_array);
1277 mono_mb_emit_icon (mb, complex_count);
1278 mono_mb_emit_byte (mb, CEE_LDELEM_REF);
1279 if (m_class_is_valuetype (ret_class)) {
1280 mono_mb_emit_op (mb, CEE_UNBOX, ret_class);
1281 mono_mb_emit_op (mb, CEE_LDOBJ, ret_class);
1282 }
1283 }
1284 } else if (ret_marshal_type == MONO_MARSHAL_SERIALIZE) {
1285 mono_mb_emit_ldloc (mb, loc_serialized_data);
1286 mono_marshal_emit_xdomain_copy_value (mb, byte_array_class);
1287 mono_mb_emit_managed_call (mb, method_rs_deserialize, NULL);
1288 if (m_class_is_valuetype (ret_class)) {
1289 mono_mb_emit_op (mb, CEE_UNBOX, ret_class);
1290 mono_mb_emit_op (mb, CEE_LDOBJ, ret_class);
1291 } else if (ret_class != mono_defaults.object_class) {
1292 mono_mb_emit_op (mb, CEE_CASTCLASS, ret_class);
1293 }
1294 } else {
1295 mono_mb_emit_ldloc (mb, loc_serialized_data);
1296 mono_mb_emit_byte (mb, CEE_DUP);
1297 pos = mono_mb_emit_short_branch (mb, CEE_BRFALSE_S);
1298 mono_marshal_emit_xdomain_copy_value (mb, byte_array_class);
1299
1300 mono_mb_patch_short_branch (mb, pos);
1301 mono_mb_emit_managed_call (mb, method_rs_deserialize, NULL);
1302 mono_mb_emit_byte (mb, CEE_POP);
1303 }
1304
1305 if (copy_return) {
1306 mono_mb_emit_ldloc (mb, loc_return);
1307 if (ret_marshal_type == MONO_MARSHAL_COPY)
1308 mono_marshal_emit_xdomain_copy_value (mb, ret_class);
1309 }
1310
1311 mono_mb_emit_byte (mb, CEE_RET);
1312 #endif /* DISABLE_JIT */
1313
1314 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_NONE);
1315 info->d.remoting.method = method;
1316 res = mono_remoting_mb_create_and_cache (method, mb, sig, sig->param_count + 16, info);
1317 mono_mb_free (mb);
1318
1319 return res;
1320 }
1321
1322 /**
1323 * mono_marshal_get_remoting_invoke_for_target:
1324 */
1325 MonoMethod *
1326 mono_marshal_get_remoting_invoke_for_target (MonoMethod *method, MonoRemotingTarget target_type, MonoError *error)
1327 {
1328 error_init (error);
1329 if (target_type == MONO_REMOTING_TARGET_APPDOMAIN) {
1330 return mono_marshal_get_xappdomain_invoke (method, error);
1331 } else if (target_type == MONO_REMOTING_TARGET_COMINTEROP) {
1332 #ifndef DISABLE_COM
1333 return mono_cominterop_get_invoke (method);
1334 #else
1335 g_assert_not_reached ();
1336 #endif
1337 } else {
1338 return mono_marshal_get_remoting_invoke (method, error);
1339 }
1340 /* Not erached */
1341 return NULL;
1342 }
1343
1344 G_GNUC_UNUSED static gpointer
1345 mono_marshal_load_remoting_wrapper (MonoRealProxy *rp, MonoMethod *method)
1346 {
1347 ERROR_DECL (error);
1348 MonoMethod *marshal_method = NULL;
1349 if (rp->target_domain_id != -1)
1350 marshal_method = mono_marshal_get_xappdomain_invoke (method, error);
1351 else
1352 marshal_method = mono_marshal_get_remoting_invoke (method, error);
1353 mono_error_assert_ok (error);
1354 gpointer compiled_ptr = mono_compile_method_checked (marshal_method, error);
1355 mono_error_assert_ok (error);
1356 return compiled_ptr;
1357 }
1358
1359 /**
1360 * mono_marshal_get_remoting_invoke_with_check:
1361 */
1362 MonoMethod *
1363 mono_marshal_get_remoting_invoke_with_check (MonoMethod *method, MonoError *error)
1364 {
1365 MonoMethodSignature *sig;
1366 MonoMethodBuilder *mb;
1367 MonoMethod *res, *native;
1368 WrapperInfo *info;
1369 int i, pos, pos_rem;
1370
1371 g_assert (method);
1372 error_init (error);
1373
1374 if (method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)
1375 return method;
1376
1377 /* we cant remote methods without this pointer */
1378 g_assert (mono_method_signature_internal (method)->hasthis);
1379
1380 if ((res = mono_marshal_remoting_find_in_cache (method, MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)))
1381 return res;
1382
1383 sig = mono_signature_no_pinvoke (method);
1384
1385 mb = mono_mb_new (method->klass, method->name, MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK);
1386
1387 #ifndef DISABLE_JIT
1388 for (i = 0; i <= sig->param_count; i++)
1389 mono_mb_emit_ldarg (mb, i);
1390
1391 mono_mb_emit_ldarg (mb, 0);
1392 pos = mono_mb_emit_proxy_check (mb, CEE_BNE_UN);
1393
1394 if (mono_marshal_supports_fast_xdomain (method)) {
1395 mono_mb_emit_ldarg (mb, 0);
1396 pos_rem = mono_mb_emit_xdomain_check (mb, CEE_BEQ);
1397
1398 /* wrapper for cross app domain calls */
1399 native = mono_marshal_get_xappdomain_invoke (method, error);
1400 if (!is_ok (error)) {
1401 mono_mb_free (mb);
1402 return NULL;
1403 }
1404 mono_mb_emit_managed_call (mb, native, mono_method_signature_internal (native));
1405 mono_mb_emit_byte (mb, CEE_RET);
1406
1407 mono_mb_patch_branch (mb, pos_rem);
1408 }
1409 /* wrapper for normal remote calls */
1410 native = mono_marshal_get_remoting_invoke (method, error);
1411 if (!is_ok (error)) {
1412 mono_mb_free (mb);
1413 return NULL;
1414 }
1415 mono_mb_emit_managed_call (mb, native, mono_method_signature_internal (native));
1416 mono_mb_emit_byte (mb, CEE_RET);
1417
1418 /* not a proxy */
1419 mono_mb_patch_branch (mb, pos);
1420 mono_mb_emit_managed_call (mb, method, mono_method_signature_internal (method));
1421 mono_mb_emit_byte (mb, CEE_RET);
1422 #endif
1423
1424 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_NONE);
1425 info->d.remoting.method = method;
1426 res = mono_remoting_mb_create_and_cache (method, mb, sig, sig->param_count + 16, info);
1427 mono_mb_free (mb);
1428
1429 return res;
1430 }
1431
1432 /**
1433 * mono_marshal_get_ldfld_wrapper:
1434 * \param type the type of the field
1435 *
1436 * This method generates a function which can be use to load a field with type
1437 * \p type from an object. The generated function has the following signature:
1438 *
1439 * <code><i>type</i> ldfld_wrapper (MonoObject *this_obj, MonoClass *klass, MonoClassField *field, int offset)</code>
1440 */
1441 MonoMethod *
1442 mono_marshal_get_ldfld_wrapper (MonoType *type)
1443 {
1444 MonoMethodSignature *sig;
1445 MonoMethodBuilder *mb;
1446 MonoMethod *res;
1447 MonoClass *klass;
1448 GHashTable *cache;
1449 WrapperInfo *info;
1450 char *name;
1451 int t, pos0, pos1 = 0;
1452 static MonoMethod* tp_load = NULL;
1453
1454 type = mono_type_get_underlying_type (type);
1455
1456 t = type->type;
1457
1458 if (!type->byref) {
1459 if (type->type == MONO_TYPE_SZARRAY) {
1460 klass = mono_defaults.array_class;
1461 } else if (type->type == MONO_TYPE_VALUETYPE) {
1462 klass = type->data.klass;
1463 } else if (t == MONO_TYPE_OBJECT || t == MONO_TYPE_CLASS || t == MONO_TYPE_STRING) {
1464 klass = mono_defaults.object_class;
1465 } else if (t == MONO_TYPE_PTR || t == MONO_TYPE_FNPTR) {
1466 klass = mono_defaults.int_class;
1467 } else if (t == MONO_TYPE_GENERICINST) {
1468 if (mono_type_generic_inst_is_valuetype (type))
1469 klass = mono_class_from_mono_type_internal (type);
1470 else
1471 klass = mono_defaults.object_class;
1472 } else {
1473 klass = mono_class_from_mono_type_internal (type);
1474 }
1475 } else {
1476 klass = mono_defaults.int_class;
1477 }
1478
1479 cache = get_cache (&m_class_get_image (klass)->ldfld_wrapper_cache, mono_aligned_addr_hash, NULL);
1480 if ((res = mono_marshal_find_in_cache (cache, klass)))
1481 return res;
1482
1483 #ifndef DISABLE_REMOTING
1484 if (!tp_load) {
1485 ERROR_DECL (error);
1486 tp_load = mono_class_get_method_from_name_checked (mono_defaults.transparent_proxy_class, "LoadRemoteFieldNew", -1, 0, error);
1487 mono_error_assert_ok (error);
1488 g_assert (tp_load != NULL);
1489 }
1490 #endif
1491
1492 /* we add the %p pointer value of klass because class names are not unique */
1493 name = g_strdup_printf ("__ldfld_wrapper_%p_%s.%s", klass, m_class_get_name_space (klass), m_class_get_name (klass));
1494 mb = mono_mb_new (mono_defaults.object_class, name, MONO_WRAPPER_LDFLD);
1495 g_free (name);
1496
1497 MonoType *object_type = mono_get_object_type ();
1498 MonoType *int_type = mono_get_int_type ();
1499 sig = mono_metadata_signature_alloc (mono_defaults.corlib, 4);
1500 sig->params [0] = object_type;
1501 sig->params [1] = int_type;
1502 sig->params [2] = int_type;
1503 sig->params [3] = int_type;
1504 sig->ret = m_class_get_byval_arg (klass);
1505
1506 #ifndef DISABLE_JIT
1507 mono_mb_emit_ldarg (mb, 0);
1508 pos0 = mono_mb_emit_proxy_check (mb, CEE_BNE_UN);
1509
1510 #ifndef DISABLE_REMOTING
1511 mono_mb_emit_ldarg (mb, 0);
1512 mono_mb_emit_ldarg (mb, 1);
1513 mono_mb_emit_ldarg (mb, 2);
1514
1515 mono_mb_emit_managed_call (mb, tp_load, NULL);
1516
1517 /*
1518 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 3);
1519 csig->params [0] = mono_get_object_type ();
1520 csig->params [1] = mono_get_int_type ();
1521 csig->params [2] = mono_get_int_type ();
1522 csig->ret = m_class_get_this_arg (klass);
1523 csig->pinvoke = 1;
1524
1525 mono_mb_emit_native_call (mb, csig, mono_load_remote_field_new);
1526 mono_marshal_emit_thread_interrupt_checkpoint (mb);
1527 */
1528
1529 if (m_class_is_valuetype (klass)) {
1530 mono_mb_emit_op (mb, CEE_UNBOX, klass);
1531 pos1 = mono_mb_emit_branch (mb, CEE_BR);
1532 } else {
1533 mono_mb_emit_byte (mb, CEE_RET);
1534 }
1535 #endif
1536
1537 mono_mb_patch_branch (mb, pos0);
1538
1539 mono_mb_emit_ldarg (mb, 0);
1540 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
1541 mono_mb_emit_byte (mb, CEE_MONO_OBJADDR);
1542 mono_mb_emit_ldarg (mb, 3);
1543 mono_mb_emit_byte (mb, CEE_ADD);
1544
1545 if (m_class_is_valuetype (klass))
1546 mono_mb_patch_branch (mb, pos1);
1547
1548 switch (t) {
1549 case MONO_TYPE_I1:
1550 case MONO_TYPE_U1:
1551 case MONO_TYPE_BOOLEAN:
1552 case MONO_TYPE_CHAR:
1553 case MONO_TYPE_I2:
1554 case MONO_TYPE_U2:
1555 case MONO_TYPE_I4:
1556 case MONO_TYPE_U4:
1557 case MONO_TYPE_I8:
1558 case MONO_TYPE_U8:
1559 case MONO_TYPE_R4:
1560 case MONO_TYPE_R8:
1561 case MONO_TYPE_ARRAY:
1562 case MONO_TYPE_SZARRAY:
1563 case MONO_TYPE_OBJECT:
1564 case MONO_TYPE_CLASS:
1565 case MONO_TYPE_STRING:
1566 case MONO_TYPE_I:
1567 case MONO_TYPE_U:
1568 case MONO_TYPE_PTR:
1569 case MONO_TYPE_FNPTR:
1570 mono_mb_emit_byte (mb, mono_type_to_ldind (type));
1571 break;
1572 case MONO_TYPE_VALUETYPE:
1573 g_assert (!m_class_is_enumtype (klass));
1574 mono_mb_emit_op (mb, CEE_LDOBJ, klass);
1575 break;
1576 case MONO_TYPE_GENERICINST:
1577 if (mono_type_generic_inst_is_valuetype (type)) {
1578 mono_mb_emit_op (mb, CEE_LDOBJ, klass);
1579 } else {
1580 mono_mb_emit_byte (mb, CEE_LDIND_REF);
1581 }
1582 break;
1583 case MONO_TYPE_VAR:
1584 case MONO_TYPE_MVAR:
1585 mono_mb_emit_op (mb, CEE_LDOBJ, klass);
1586 break;
1587 default:
1588 g_warning ("type %x not implemented", type->type);
1589 g_assert_not_reached ();
1590 }
1591
1592 mono_mb_emit_byte (mb, CEE_RET);
1593 #endif /* DISABLE_JIT */
1594
1595 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_NONE);
1596 info->d.proxy.klass = klass;
1597 res = mono_mb_create_and_cache_full (cache, klass,
1598 mb, sig, sig->param_count + 16, info, NULL);
1599 mono_mb_free (mb);
1600
1601 return res;
1602 }
1603
1604 /*
1605 * mono_marshal_get_ldflda_wrapper:
1606 * @type: the type of the field
1607 *
1608 * This method generates a function which can be used to load a field address
1609 * from an object. The generated function has the following signature:
1610 * gpointer ldflda_wrapper (MonoObject *this_obj, MonoClass *klass, MonoClassField *field, int offset);
1611 */
1612 MonoMethod *
1613 mono_marshal_get_ldflda_wrapper (MonoType *type)
1614 {
1615 MonoMethodSignature *sig;
1616 MonoMethodBuilder *mb;
1617 MonoMethod *res;
1618 MonoClass *klass;
1619 GHashTable *cache;
1620 WrapperInfo *info;
1621 char *name;
1622 int t, pos0, pos1, pos2, pos3;
1623
1624 type = mono_type_get_underlying_type (type);
1625 t = type->type;
1626
1627 if (!type->byref) {
1628 if (type->type == MONO_TYPE_SZARRAY) {
1629 klass = mono_defaults.array_class;
1630 } else if (type->type == MONO_TYPE_VALUETYPE) {
1631 klass = type->data.klass;
1632 } else if (t == MONO_TYPE_OBJECT || t == MONO_TYPE_CLASS || t == MONO_TYPE_STRING) {
1633 klass = mono_defaults.object_class;
1634 } else if (t == MONO_TYPE_PTR || t == MONO_TYPE_FNPTR) {
1635 klass = mono_defaults.int_class;
1636 } else if (t == MONO_TYPE_GENERICINST) {
1637 if (mono_type_generic_inst_is_valuetype (type))
1638 klass = mono_class_from_mono_type_internal (type);
1639 else
1640 klass = mono_defaults.object_class;
1641 } else {
1642 klass = mono_class_from_mono_type_internal (type);
1643 }
1644 } else {
1645 klass = mono_defaults.int_class;
1646 }
1647
1648 cache = get_cache (&m_class_get_image (klass)->ldflda_wrapper_cache, mono_aligned_addr_hash, NULL);
1649 if ((res = mono_marshal_find_in_cache (cache, klass)))
1650 return res;
1651
1652 mono_remoting_marshal_init ();
1653
1654 /* we add the %p pointer value of klass because class names are not unique */
1655 name = g_strdup_printf ("__ldflda_wrapper_%p_%s.%s", klass, m_class_get_name_space (klass), m_class_get_name (klass));
1656 mb = mono_mb_new (mono_defaults.object_class, name, MONO_WRAPPER_LDFLDA);
1657 g_free (name);
1658
1659 MonoType *object_type = mono_get_object_type ();
1660 MonoType *int_type = mono_get_int_type ();
1661 sig = mono_metadata_signature_alloc (mono_defaults.corlib, 4);
1662 sig->params [0] = object_type;
1663 sig->params [1] = int_type;
1664 sig->params [2] = int_type;
1665 sig->params [3] = int_type;
1666 sig->ret = int_type;
1667
1668 #ifndef DISABLE_JIT
1669 /* if typeof (this) != transparent_proxy goto pos0 */
1670 mono_mb_emit_ldarg (mb, 0);
1671 pos0 = mono_mb_emit_proxy_check (mb, CEE_BNE_UN);
1672
1673 /* if same_appdomain goto pos1 */
1674 mono_mb_emit_ldarg (mb, 0);
1675 pos1 = mono_mb_emit_xdomain_check (mb, CEE_BEQ);
1676
1677 mono_mb_emit_exception_full (mb, "System", "InvalidOperationException", "Attempt to load field address from object in another appdomain.");
1678
1679 /* same app domain */
1680 mono_mb_patch_branch (mb, pos1);
1681
1682 /* if typeof (this) != contextbound goto pos2 */
1683 mono_mb_emit_ldarg (mb, 0);
1684 pos2 = mono_mb_emit_contextbound_check (mb, CEE_BEQ);
1685
1686 /* if this->rp->context == mono_context_get goto pos3 */
1687 mono_mb_emit_ldarg (mb, 0);
1688 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoTransparentProxy, rp));
1689 mono_mb_emit_byte (mb, CEE_LDIND_REF);
1690 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoRealProxy, context));
1691 mono_mb_emit_byte (mb, CEE_LDIND_REF);
1692 mono_mb_emit_icall (mb, mono_context_get_icall);
1693 pos3 = mono_mb_emit_branch (mb, CEE_BEQ);
1694
1695 mono_mb_emit_exception_full (mb, "System", "InvalidOperationException", "Attempt to load field address from object in another context.");
1696
1697 mono_mb_patch_branch (mb, pos2);
1698 mono_mb_patch_branch (mb, pos3);
1699
1700 /* return the address of the field from this->rp->unwrapped_server */
1701 mono_mb_emit_ldarg (mb, 0);
1702 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoTransparentProxy, rp));
1703 mono_mb_emit_byte (mb, CEE_LDIND_REF);
1704 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoRealProxy, unwrapped_server));
1705 mono_mb_emit_byte (mb, CEE_LDIND_REF);
1706 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
1707 mono_mb_emit_byte (mb, CEE_MONO_OBJADDR);
1708 mono_mb_emit_ldarg (mb, 3);
1709 mono_mb_emit_byte (mb, CEE_ADD);
1710 mono_mb_emit_byte (mb, CEE_RET);
1711
1712 /* not a proxy: return the address of the field directly */
1713 mono_mb_patch_branch (mb, pos0);
1714
1715 mono_mb_emit_ldarg (mb, 0);
1716 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
1717 mono_mb_emit_byte (mb, CEE_MONO_OBJADDR);
1718 mono_mb_emit_ldarg (mb, 3);
1719 mono_mb_emit_byte (mb, CEE_ADD);
1720
1721 mono_mb_emit_byte (mb, CEE_RET);
1722 #endif
1723
1724 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_NONE);
1725 info->d.proxy.klass = klass;
1726 res = mono_mb_create_and_cache_full (cache, klass,
1727 mb, sig, sig->param_count + 16,
1728 info, NULL);
1729 mono_mb_free (mb);
1730
1731 return res;
1732 }
1733
1734
1735 /**
1736 * mono_marshal_get_stfld_wrapper:
1737 * \param type the type of the field
1738 *
1739 * This method generates a function which can be use to store a field with type
1740 * \p type. The generated function has the following signature:
1741 *
1742 * <code>void stfld_wrapper (MonoObject *this_obj, MonoClass *klass, MonoClassField *field, int offset, <i>type</i> val)</code>
1743 */
1744 MonoMethod *
1745 mono_marshal_get_stfld_wrapper (MonoType *type)
1746 {
1747 MonoMethodSignature *sig;
1748 MonoMethodBuilder *mb;
1749 MonoMethod *res;
1750 MonoClass *klass;
1751 GHashTable *cache;
1752 WrapperInfo *info;
1753 char *name;
1754 int t, pos;
1755 static MonoMethod *tp_store = NULL;
1756
1757 type = mono_type_get_underlying_type (type);
1758 t = type->type;
1759
1760 if (!type->byref) {
1761 if (type->type == MONO_TYPE_SZARRAY) {
1762 klass = mono_defaults.array_class;
1763 } else if (type->type == MONO_TYPE_VALUETYPE) {
1764 klass = type->data.klass;
1765 } else if (t == MONO_TYPE_OBJECT || t == MONO_TYPE_CLASS || t == MONO_TYPE_STRING) {
1766 klass = mono_defaults.object_class;
1767 } else if (t == MONO_TYPE_PTR || t == MONO_TYPE_FNPTR) {
1768 klass = mono_defaults.int_class;
1769 } else if (t == MONO_TYPE_GENERICINST) {
1770 if (mono_type_generic_inst_is_valuetype (type))
1771 klass = mono_class_from_mono_type_internal (type);
1772 else
1773 klass = mono_defaults.object_class;
1774 } else {
1775 klass = mono_class_from_mono_type_internal (type);
1776 }
1777 } else {
1778 klass = mono_defaults.int_class;
1779 }
1780
1781 cache = get_cache (&m_class_get_image (klass)->stfld_wrapper_cache, mono_aligned_addr_hash, NULL);
1782 if ((res = mono_marshal_find_in_cache (cache, klass)))
1783 return res;
1784
1785 #ifndef DISABLE_REMOTING
1786 if (!tp_store) {
1787 ERROR_DECL (error);
1788 tp_store = mono_class_get_method_from_name_checked (mono_defaults.transparent_proxy_class, "StoreRemoteField", -1, 0, error);
1789 mono_error_assert_ok (error);
1790 g_assert (tp_store != NULL);
1791 }
1792 #endif
1793
1794 /* we add the %p pointer value of klass because class names are not unique */
1795 name = g_strdup_printf ("__stfld_wrapper_%p_%s.%s", klass, m_class_get_name_space (klass), m_class_get_name (klass));
1796 mb = mono_mb_new (mono_defaults.object_class, name, MONO_WRAPPER_STFLD);
1797 g_free (name);
1798
1799
1800 MonoType *object_type = mono_get_object_type ();
1801 MonoType *int_type = mono_get_int_type ();
1802 MonoType *void_type = mono_get_void_type ();
1803 sig = mono_metadata_signature_alloc (mono_defaults.corlib, 5);
1804 sig->params [0] = object_type;
1805 sig->params [1] = int_type;
1806 sig->params [2] = int_type;
1807 sig->params [3] = int_type;
1808 sig->params [4] = m_class_get_byval_arg (klass);
1809 sig->ret = void_type;
1810
1811 #ifndef DISABLE_JIT
1812 mono_mb_emit_ldarg (mb, 0);
1813 pos = mono_mb_emit_proxy_check (mb, CEE_BNE_UN);
1814
1815 #ifndef DISABLE_REMOTING
1816 mono_mb_emit_ldarg (mb, 0);
1817 mono_mb_emit_ldarg (mb, 1);
1818 mono_mb_emit_ldarg (mb, 2);
1819 mono_mb_emit_ldarg (mb, 4);
1820 if (m_class_is_valuetype (klass))
1821 mono_mb_emit_op (mb, CEE_BOX, klass);
1822
1823 mono_mb_emit_managed_call (mb, tp_store, NULL);
1824
1825 mono_mb_emit_byte (mb, CEE_RET);
1826 #endif
1827
1828 mono_mb_patch_branch (mb, pos);
1829
1830 mono_mb_emit_ldarg (mb, 0);
1831 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
1832 mono_mb_emit_byte (mb, CEE_MONO_OBJADDR);
1833 mono_mb_emit_ldarg (mb, 3);
1834 mono_mb_emit_byte (mb, CEE_ADD);
1835 mono_mb_emit_ldarg (mb, 4);
1836
1837 switch (t) {
1838 case MONO_TYPE_I1:
1839 case MONO_TYPE_U1:
1840 case MONO_TYPE_BOOLEAN:
1841 case MONO_TYPE_CHAR:
1842 case MONO_TYPE_I2:
1843 case MONO_TYPE_U2:
1844 case MONO_TYPE_I4:
1845 case MONO_TYPE_U4:
1846 case MONO_TYPE_I8:
1847 case MONO_TYPE_U8:
1848 case MONO_TYPE_R4:
1849 case MONO_TYPE_R8:
1850 case MONO_TYPE_ARRAY:
1851 case MONO_TYPE_SZARRAY:
1852 case MONO_TYPE_OBJECT:
1853 case MONO_TYPE_CLASS:
1854 case MONO_TYPE_STRING:
1855 case MONO_TYPE_I:
1856 case MONO_TYPE_U:
1857 case MONO_TYPE_PTR:
1858 case MONO_TYPE_FNPTR:
1859 mono_mb_emit_byte (mb, mono_type_to_stind (type));
1860 break;
1861 case MONO_TYPE_VALUETYPE:
1862 g_assert (!m_class_is_enumtype (klass));
1863 mono_mb_emit_op (mb, CEE_STOBJ, klass);
1864 break;
1865 case MONO_TYPE_GENERICINST:
1866 case MONO_TYPE_VAR:
1867 case MONO_TYPE_MVAR:
1868 mono_mb_emit_op (mb, CEE_STOBJ, klass);
1869 break;
1870 default:
1871 g_warning ("type %x not implemented", type->type);
1872 g_assert_not_reached ();
1873 }
1874
1875 mono_mb_emit_byte (mb, CEE_RET);
1876 #endif
1877
1878 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_NONE);
1879 info->d.proxy.klass = klass;
1880 res = mono_mb_create_and_cache_full (cache, klass,
1881 mb, sig, sig->param_count + 16,
1882 info, NULL);
1883 mono_mb_free (mb);
1884
1885 return res;
1886 }
1887
1888 /**
1889 * mono_marshal_get_proxy_cancast:
1890 */
1891 MonoMethod *
1892 mono_marshal_get_proxy_cancast (MonoClass *klass)
1893 {
1894 static MonoMethodSignature *isint_sig = NULL;
1895 GHashTable *cache;
1896 MonoMethod *res;
1897 WrapperInfo *info;
1898 int pos_failed, pos_end;
1899 char *name, *klass_name;
1900 MonoMethod *can_cast_to;
1901 MonoMethodDesc *desc;
1902 MonoMethodBuilder *mb;
1903
1904 cache = get_cache (&m_class_get_image (klass)->proxy_isinst_cache, mono_aligned_addr_hash, NULL);
1905 if ((res = mono_marshal_find_in_cache (cache, klass)))
1906 return res;
1907
1908 if (!isint_sig) {
1909 isint_sig = mono_metadata_signature_alloc (mono_defaults.corlib, 1);
1910 isint_sig->params [0] = mono_get_object_type ();
1911 isint_sig->ret = mono_get_object_type ();
1912 isint_sig->pinvoke = 0;
1913 }
1914
1915 klass_name = mono_type_full_name (m_class_get_byval_arg (klass));
1916 name = g_strdup_printf ("__proxy_isinst_wrapper_%s", klass_name);
1917 mb = mono_mb_new (mono_defaults.object_class, name, MONO_WRAPPER_PROXY_ISINST);
1918 g_free (klass_name);
1919 g_free (name);
1920
1921 mb->method->save_lmf = 1;
1922
1923 #ifndef DISABLE_JIT
1924
1925 mono_remoting_marshal_init (); // register icalls
1926
1927 /* get the real proxy from the transparent proxy*/
1928 mono_mb_emit_ldarg (mb, 0);
1929 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoTransparentProxy, rp));
1930 mono_mb_emit_byte (mb, CEE_LDIND_REF);
1931
1932 /* get the reflection type from the type handle */
1933 mono_mb_emit_ptr (mb, m_class_get_byval_arg (klass));
1934 mono_mb_emit_icall (mb, type_from_handle);
1935
1936 mono_mb_emit_ldarg (mb, 0);
1937
1938 /* make the call to CanCastTo (type, ob) */
1939 desc = mono_method_desc_new ("IRemotingTypeInfo:CanCastTo", FALSE);
1940 can_cast_to = mono_method_desc_search_in_class (desc, mono_defaults.iremotingtypeinfo_class);
1941 g_assert (can_cast_to);
1942 mono_method_desc_free (desc);
1943 mono_mb_emit_op (mb, CEE_CALLVIRT, can_cast_to);
1944
1945 pos_failed = mono_mb_emit_branch (mb, CEE_BRFALSE);
1946
1947 /* Upgrade the proxy vtable by calling: mono_upgrade_remote_class_wrapper (type, ob)*/
1948 mono_mb_emit_ptr (mb, m_class_get_byval_arg (klass));
1949 mono_mb_emit_icall (mb, type_from_handle);
1950 mono_mb_emit_ldarg (mb, 0);
1951
1952 mono_mb_emit_icall (mb, mono_upgrade_remote_class_wrapper);
1953 mono_marshal_emit_thread_interrupt_checkpoint (mb);
1954
1955 mono_mb_emit_ldarg (mb, 0);
1956 pos_end = mono_mb_emit_branch (mb, CEE_BR);
1957
1958 /* fail */
1959
1960 mono_mb_patch_branch (mb, pos_failed);
1961 mono_mb_emit_byte (mb, CEE_LDNULL);
1962
1963 /* the end */
1964
1965 mono_mb_patch_branch (mb, pos_end);
1966 mono_mb_emit_byte (mb, CEE_RET);
1967 #endif
1968
1969 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_NONE);
1970 info->d.proxy.klass = klass;
1971 res = mono_mb_create_and_cache_full (cache, klass, mb, isint_sig, isint_sig->param_count + 16, info, NULL);
1972 mono_mb_free (mb);
1973
1974 return res;
1975 }
1976
1977 void
1978 mono_upgrade_remote_class_wrapper (MonoReflectionType *rtype_raw, MonoTransparentProxy *tproxy_raw)
1979 {
1980 ICALL_ENTRY ();
1981 MONO_HANDLE_DCL (MonoReflectionType, rtype);
1982 MONO_HANDLE_DCL (MonoTransparentProxy, tproxy);
1983 MonoDomain *domain = MONO_HANDLE_DOMAIN (tproxy);
1984 MonoClass *klass = mono_class_from_mono_type_internal (MONO_HANDLE_GETVAL (rtype, type));
1985 mono_upgrade_remote_class (domain, MONO_HANDLE_CAST (MonoObject, tproxy), klass, error);
1986 ICALL_RETURN ();
1987 }
1988
1989 #else /* DISABLE_REMOTING */
1990
1991 void
1992 mono_remoting_init (void)
1993 {
1994 }
1995
1996 #endif /* DISABLE_REMOTING */
1997
1998 /* mono_get_xdomain_marshal_type()
1999 * Returns the kind of marshalling that a type needs for cross domain calls.
2000 */
2001 static MonoXDomainMarshalType
2002 mono_get_xdomain_marshal_type (MonoType *t)
2003 {
2004 switch (t->type) {
2005 case MONO_TYPE_VOID:
2006 g_assert_not_reached ();
2007 break;
2008 case MONO_TYPE_U1:
2009 case MONO_TYPE_I1:
2010 case MONO_TYPE_BOOLEAN:
2011 case MONO_TYPE_U2:
2012 case MONO_TYPE_I2:
2013 case MONO_TYPE_CHAR:
2014 case MONO_TYPE_U4:
2015 case MONO_TYPE_I4:
2016 case MONO_TYPE_I8:
2017 case MONO_TYPE_U8:
2018 case MONO_TYPE_R4:
2019 case MONO_TYPE_R8:
2020 return MONO_MARSHAL_NONE;
2021 case MONO_TYPE_STRING:
2022 return MONO_MARSHAL_COPY;
2023 case MONO_TYPE_ARRAY:
2024 case MONO_TYPE_SZARRAY: {
2025 MonoClass *elem_class = m_class_get_element_class (mono_class_from_mono_type_internal (t));
2026 if (mono_get_xdomain_marshal_type (m_class_get_byval_arg (elem_class)) != MONO_MARSHAL_SERIALIZE)
2027 return MONO_MARSHAL_COPY;
2028 break;
2029 }
2030 default:
2031 break;
2032 }
2033 return MONO_MARSHAL_SERIALIZE;
2034 }
2035
2036 /* Replace the given array element by a copy in the current domain */
2037 static gboolean
2038 xdomain_copy_array_element_inplace (MonoArrayHandle arr, int i, MonoError *error)
2039 {
2040 HANDLE_FUNCTION_ENTER ();
2041 error_init (error);
2042 MonoObjectHandle item = MONO_HANDLE_NEW (MonoObject, NULL);
2043 MONO_HANDLE_ARRAY_GETREF (item, arr, i);
2044
2045 MonoObjectHandle item_copy = mono_marshal_xdomain_copy_value_handle (item, error);
2046 goto_if_nok (error, leave);
2047 MONO_HANDLE_ARRAY_SETREF (arr, i, item_copy);
2048 leave:
2049 HANDLE_FUNCTION_RETURN_VAL (is_ok (error));
2050 }
2051
2052 /**
2053 * mono_marshal_xdomain_copy_value_handle:
2054 * \param val The value to copy.
2055 * \param error set on failure.
2056 * Makes a copy of \p val suitable for the current domain.
2057 * On failure returns NULL and sets \p error.
2058 */
2059 MonoObjectHandle
2060 mono_marshal_xdomain_copy_value_handle (MonoObjectHandle val, MonoError *error)
2061 {
2062 error_init (error);
2063 MonoObjectHandle result = MONO_HANDLE_NEW (MonoObject, NULL);
2064 if (MONO_HANDLE_IS_NULL (val))
2065 goto leave;
2066
2067 MonoDomain *domain;
2068 domain = mono_domain_get ();
2069
2070 MonoClass *klass;
2071 klass = mono_handle_class (val);
2072
2073 switch (m_class_get_byval_arg (klass)->type) {
2074 case MONO_TYPE_VOID:
2075 g_assert_not_reached ();
2076 break;
2077 case MONO_TYPE_U1:
2078 case MONO_TYPE_I1:
2079 case MONO_TYPE_BOOLEAN:
2080 case MONO_TYPE_U2:
2081 case MONO_TYPE_I2:
2082 case MONO_TYPE_CHAR:
2083 case MONO_TYPE_U4:
2084 case MONO_TYPE_I4:
2085 case MONO_TYPE_I8:
2086 case MONO_TYPE_U8:
2087 case MONO_TYPE_R4:
2088 case MONO_TYPE_R8: {
2089 uint32_t gchandle = mono_gchandle_from_handle (val, TRUE);
2090 MonoObjectHandle res = MONO_HANDLE_NEW (MonoObject, mono_value_box_checked (domain, klass, ((char*)MONO_HANDLE_RAW (val)) + sizeof(MonoObject), error)); /* FIXME use handles in mono_value_box_checked */
2091 mono_gchandle_free_internal (gchandle);
2092 goto_if_nok (error, leave);
2093 MONO_HANDLE_ASSIGN (result, res);
2094 break;
2095 }
2096 case MONO_TYPE_STRING: {
2097 MonoStringHandle str = MONO_HANDLE_CAST (MonoString, val);
2098 uint32_t gchandle = mono_gchandle_from_handle (val, TRUE);
2099 MonoStringHandle res = mono_string_new_utf16_handle (domain, mono_string_chars_internal (MONO_HANDLE_RAW (str)), mono_string_handle_length (str), error);
2100 mono_gchandle_free_internal (gchandle);
2101 goto_if_nok (error, leave);
2102 MONO_HANDLE_ASSIGN (result, res);
2103 break;
2104 }
2105 case MONO_TYPE_ARRAY:
2106 case MONO_TYPE_SZARRAY: {
2107 MonoArrayHandle arr = MONO_HANDLE_CAST (MonoArray, val);
2108 MonoXDomainMarshalType mt = mono_get_xdomain_marshal_type (m_class_get_byval_arg (m_class_get_element_class (klass)));
2109 if (mt == MONO_MARSHAL_SERIALIZE)
2110 goto leave;
2111 MonoArrayHandle acopy = mono_array_clone_in_domain (domain, arr, error);
2112 goto_if_nok (error, leave);
2113
2114 if (mt == MONO_MARSHAL_COPY) {
2115 int i, len = mono_array_handle_length (acopy);
2116 for (i = 0; i < len; i++) {
2117 if (!xdomain_copy_array_element_inplace (acopy, i, error))
2118 goto leave;
2119 }
2120 }
2121 MONO_HANDLE_ASSIGN (result, acopy);
2122 break;
2123 }
2124 default:
2125 break;
2126 }
2127
2128 leave:
2129 return result;
2130 }
2131
2132 #ifndef DISABLE_REMOTING
2133
2134 /* mono_marshal_xdomain_copy_value
2135 * Makes a copy of "val" suitable for the current domain.
2136 */
2137 static MonoObject*
2138 mono_marshal_xdomain_copy_value (MonoObject* val_raw, MonoError *error)
2139 {
2140 HANDLE_FUNCTION_ENTER ();
2141 /* FIXME callers of mono_marshal_xdomain_copy_value should use handles */
2142 MONO_HANDLE_DCL (MonoObject, val);
2143 MonoObjectHandle result = mono_marshal_xdomain_copy_value_handle (val, error);
2144 HANDLE_FUNCTION_RETURN_OBJ (result);
2145 }
2146
2147 #endif
2148
2149 /* mono_marshal_xdomain_copy_value
2150 * Makes a copy of "val" suitable for the current domain.
2151 */
2152 MonoObjectHandle
2153 ves_icall_mono_marshal_xdomain_copy_value_impl (MonoObjectHandle val, MonoError *error)
2154 {
2155 return mono_marshal_xdomain_copy_value_handle (val, error);
2156 }
2157
2158 static void
2159 mono_context_set_icall (MonoAppContext *new_context_raw)
2160 {
2161 HANDLE_FUNCTION_ENTER ();
2162 MONO_HANDLE_DCL (MonoAppContext, new_context);
2163 mono_context_set_handle (new_context);
2164 HANDLE_FUNCTION_RETURN ();
2165 }
2166
2167 static MonoAppContext*
2168 mono_context_get_icall (void)
2169 {
2170 HANDLE_FUNCTION_ENTER ();
2171 MonoAppContextHandle context = mono_context_get_handle ();
2172 HANDLE_FUNCTION_RETURN_OBJ (context);
2173 }
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