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In Test/System.Data:
[mono-project.git] / mono / metadata / marshal.c
blobf132f1f056e2dc7da63f7c864678b81a49605f8e
1 /*
2 * marshal.c: Routines for marshaling complex types in P/Invoke methods.
3 *
4 * Author:
5 * Paolo Molaro (lupus@ximian.com)
6 *
7 * (C) 2002 Ximian, Inc. http://www.ximian.com
8 *
9 */
10
11 #include "config.h"
12 #include "object.h"
13 #include "loader.h"
14 #include "metadata/marshal.h"
15 #include "metadata/tabledefs.h"
16 #include "metadata/exception.h"
17 #include "metadata/appdomain.h"
18 #include "mono/metadata/debug-helpers.h"
19 #include "mono/metadata/threadpool.h"
20 #include "mono/metadata/threads.h"
21 #include "mono/metadata/monitor.h"
22 #include "mono/metadata/metadata-internals.h"
23 #include "mono/metadata/domain-internals.h"
24 #include "mono/metadata/gc-internal.h"
25 #include "mono/metadata/threads-types.h"
26 #include "mono/metadata/string-icalls.h"
27 #include <mono/os/gc_wrapper.h>
28 #include <string.h>
29 #include <errno.h>
30
31 /* #define DEBUG_RUNTIME_CODE */
32
33 #define OPDEF(a,b,c,d,e,f,g,h,i,j) \
34 a = i,
35
36 typedef enum {
37 MONO_MARSHAL_NONE, /* No marshalling needed */
38 MONO_MARSHAL_COPY, /* Can be copied by value to the new domain */
39 MONO_MARSHAL_COPY_OUT, /* out parameter that needs to be copied back to the original instance */
40 MONO_MARSHAL_SERIALIZE /* Value needs to be serialized into the new domain */
41 } MonoXDomainMarshalType;
42
43 enum {
44 #include "mono/cil/opcode.def"
45 LAST = 0xff
46 };
47 #undef OPDEF
48
49 struct _MonoMethodBuilder {
50 MonoMethod *method;
51 char *name;
52 GList *locals_list;
53 int locals;
54 gboolean dynamic;
55 guint32 code_size, pos;
56 unsigned char *code;
57 };
58
59 struct _MonoRemotingMethods {
60 MonoMethod *invoke;
61 MonoMethod *invoke_with_check;
62 MonoMethod *xdomain_invoke;
63 MonoMethod *xdomain_dispatch;
64 };
65
66 typedef struct _MonoRemotingMethods MonoRemotingMethods;
67
68 #ifdef DEBUG_RUNTIME_CODE
69 static char*
70 indenter (MonoDisHelper *dh, MonoMethod *method, guint32 ip_offset)
71 {
72 return g_strdup (" ");
73 }
74
75 static MonoDisHelper marshal_dh = {
76 "\n",
77 "IL_%04x: ",
78 "IL_%04x",
79 indenter,
80 NULL,
81 NULL
82 };
83 #endif
84
85 /* This mutex protects the various marshalling related caches in MonoImage */
86 #define mono_marshal_lock() EnterCriticalSection (&marshal_mutex)
87 #define mono_marshal_unlock() LeaveCriticalSection (&marshal_mutex)
88 static CRITICAL_SECTION marshal_mutex;
89
90 /* Maps wrapper methods to the methods they wrap */
91 static GHashTable *wrapper_hash;
92
93 static guint32 last_error_tls_id;
94
95 static guint32 load_type_info_tls_id;
96
97 static void
98 delegate_hash_table_add (MonoDelegate *d);
99
100 static void
101 emit_struct_conv (MonoMethodBuilder *mb, MonoClass *klass, gboolean to_object);
102
103 static void
104 mono_struct_delete_old (MonoClass *klass, char *ptr);
105
106 void *
107 mono_marshal_string_to_utf16 (MonoString *s);
108
109 static gpointer
110 mono_string_to_lpstr (MonoString *string_obj);
111
112 static MonoString *
113 mono_string_from_bstr (gpointer bstr);
114
115 static void
116 mono_free_bstr (gpointer bstr);
117
118 static void
119 mono_byvalarray_to_array (MonoArray *arr, gpointer native_arr, MonoClass *eltype, guint32 elnum);
120
121 static void
122 mono_array_to_byvalarray (gpointer native_arr, MonoArray *arr, MonoClass *eltype, guint32 elnum);
123
124 static MonoObject *
125 mono_remoting_wrapper (MonoMethod *method, gpointer *params);
126
127 static MonoAsyncResult *
128 mono_delegate_begin_invoke (MonoDelegate *delegate, gpointer *params);
129
130 static MonoObject *
131 mono_delegate_end_invoke (MonoDelegate *delegate, gpointer *params);
132
133 static MonoObject *
134 mono_marshal_xdomain_copy_value (MonoObject *val);
135
136 static void
137 mono_marshal_xdomain_copy_out_value (MonoObject *src, MonoObject *dst);
138
139 static gint32
140 mono_marshal_set_domain_by_id (gint32 id, MonoBoolean push);
141
142 static gboolean
143 mono_marshal_check_domain_image (gint32 domain_id, MonoImage *image);
144
145 void
146 mono_upgrade_remote_class_wrapper (MonoReflectionType *rtype, MonoTransparentProxy *tproxy);
147
148 static MonoReflectionType *
149 type_from_handle (MonoType *handle);
150
151 static void
152 mono_marshal_set_last_error_windows (int error);
153
154 static void
155 mono_marshal_emit_native_wrapper (MonoImage *image, MonoMethodBuilder *mb, MonoMethodSignature *sig, MonoMethodPInvoke *piinfo, MonoMarshalSpec **mspecs, gpointer func);
156
157 static void
158 register_icall (gpointer func, const char *name, const char *sigstr, gboolean save)
159 {
160 MonoMethodSignature *sig = mono_create_icall_signature (sigstr);
161
162 mono_register_jit_icall (func, name, sig, save);
163 }
164
165 static MonoMethodSignature*
166 signature_dup (MonoImage *image, MonoMethodSignature *sig)
167 {
168 MonoMethodSignature *res;
169 int sigsize;
170
171 sigsize = sizeof (MonoMethodSignature) + ((sig->param_count - MONO_ZERO_LEN_ARRAY) * sizeof (MonoType *));
172 mono_loader_lock ();
173 res = mono_mempool_alloc (image->mempool, sigsize);
174 mono_loader_unlock ();
175 memcpy (res, sig, sigsize);
176
177 return res;
178 }
179
180 static MonoMethodSignature*
181 signature_no_pinvoke (MonoMethod *method)
182 {
183 MonoMethodSignature *sig = mono_method_signature (method);
184 if (sig->pinvoke) {
185 sig = signature_dup (method->klass->image, sig);
186 sig->pinvoke = FALSE;
187 }
188
189 return sig;
190 }
191
192 /**
193 * signature_cominterop:
194 * @image: a image
195 * @sig: managed method signature
196 *
197 * Returns: the corresponding unmanaged method signature for a managed COM
198 * method.
199 */
200 static MonoMethodSignature*
201 signature_cominterop (MonoImage *image, MonoMethodSignature *sig)
202 {
203 MonoMethodSignature *res;
204 int sigsize;
205 int i;
206 int param_count = sig->param_count + 1; // convert this arg into IntPtr arg
207
208 if (!MONO_TYPE_IS_VOID (sig->ret))
209 param_count++;
210
211 sigsize = sizeof (MonoMethodSignature) + ((param_count - MONO_ZERO_LEN_ARRAY) * sizeof (MonoType *));
212 mono_loader_lock ();
213 res = mono_mempool_alloc (image->mempool, sigsize);
214 mono_loader_unlock ();
215 memcpy (res, sig, sigsize);
216
217 // now move args forward one
218 for (i = sig->param_count-1; i >= 0; i--)
219 res->params[i+1] = sig->params[i];
220
221 // first arg is interface pointer
222 res->params[0] = &mono_defaults.int_class->byval_arg;
223
224 // last arg is return type
225 if (!MONO_TYPE_IS_VOID (sig->ret)) {
226 res->params[param_count-1] = mono_metadata_type_dup_mp (image, sig->ret);
227 res->params[param_count-1]->byref = 1;
228 res->params[param_count-1]->attrs = PARAM_ATTRIBUTE_OUT;
229 }
230
231 // no pinvoke
232 res->pinvoke = FALSE;
233
234 // no hasthis
235 res->hasthis = 0;
236
237 // set param_count
238 res->param_count = param_count;
239
240 // return type is always int32 (HRESULT)
241 res->ret = &mono_defaults.int32_class->byval_arg;
242
243 // STDCALL on windows, CDECL everywhere else to work with XPCOM and MainWin COM
244 #ifdef PLATFORM_WIN32
245 res->call_convention = MONO_CALL_STDCALL;
246 #else
247 res->call_convention = MONO_CALL_C;
248 #endif
249
250 return res;
251 }
252
253 /**
254 * cominterop_get_function_pointer:
255 * @itf: a pointer to the COM interface
256 * @slot: the vtable slot of the method pointer to return
257 *
258 * Returns: the unmanaged vtable function pointer from the interface
259 */
260 static gpointer
261 cominterop_get_function_pointer (gpointer itf, int slot)
262 {
263 gpointer func;
264 func = *((*(gpointer**)itf)+slot);
265 return func;
266 }
267
268 /**
269 * cominterop_object_is_com_object:
270 * @obj: a pointer to the object
271 *
272 * Returns: a value indicating if the object is a
273 * Runtime Callable Wrapper (RCW) for a COM object
274 */
275 static gboolean
276 cominterop_object_is_rcw (MonoObject *obj)
277 {
278 MonoClass *klass = NULL;
279 MonoRealProxy* real_proxy = NULL;
280 if (!obj)
281 return FALSE;
282 klass = mono_object_class (obj);
283 if (klass != mono_defaults.transparent_proxy_class)
284 return FALSE;
285
286 real_proxy = ((MonoTransparentProxy*)obj)->rp;
287 if (!real_proxy)
288 return FALSE;
289
290 klass = mono_object_class (real_proxy);
291 return (klass && klass == mono_defaults.com_interop_proxy_class);
292 }
293
294 /**
295 * cominterop_get_com_slot_for_method:
296 * @method: a method
297 *
298 * Returns: the method's slot in the COM interface vtable
299 */
300 static int
301 cominterop_get_com_slot_for_method (MonoMethod* method)
302 {
303 static MonoClass *interface_type_attribute = NULL;
304 MonoInterfaceTypeAttribute* itf_attr = NULL;
305 MonoCustomAttrInfo *cinfo = NULL;
306 guint32 offset = 7;
307 guint32 slot = method->slot;
308 GPtrArray *ifaces;
309 MonoClass *ic = NULL;
310 int i;
311
312 ifaces = mono_class_get_implemented_interfaces (method->klass);
313 if (ifaces) {
314 int offset;
315 for (i = 0; i < ifaces->len; ++i) {
316 ic = g_ptr_array_index (ifaces, i);
317 offset = method->klass->interface_offsets[ic->interface_id];
318 if (method->slot >= offset && method->slot < offset + ic->method.count) {
319 slot -= offset;
320 break;
321 }
322 }
323 g_ptr_array_free (ifaces, TRUE);
324 }
325
326 if (!ic)
327 ic = method->klass;
328
329 g_assert (ic);
330 g_assert (MONO_CLASS_IS_INTERFACE (ic));
331
332 if (!interface_type_attribute)
333 interface_type_attribute = mono_class_from_name (mono_defaults.corlib, "System.Runtime.InteropServices", "InterfaceTypeAttribute");
334 cinfo = mono_custom_attrs_from_class (ic);
335 if (cinfo) {
336 itf_attr = (MonoInterfaceTypeAttribute*)mono_custom_attrs_get_attr (cinfo, interface_type_attribute);
337 if (!cinfo->cached)
338 mono_custom_attrs_free (cinfo);
339 }
340
341 if (itf_attr && itf_attr->intType == 1)
342 offset = 3; /* 3 methods in IUnknown*/
343 else
344 offset = 7; /* 7 methods in IDispatch*/
345
346 return slot + offset;
347 }
348
349 /**
350 * cominterop_get_method_interface:
351 * @method: method being called
352 *
353 * Returns: the Type on which the method is defined on
354 */
355 static MonoReflectionType*
356 cominterop_get_method_interface (MonoMethod* method)
357 {
358 GPtrArray *ifaces;
359 MonoType* t = NULL;
360 MonoClass *ic = NULL;
361 int i;
362 MonoReflectionType* rt = NULL;
363
364 ifaces = mono_class_get_implemented_interfaces (method->klass);
365 if (ifaces) {
366 int offset;
367 for (i = 0; i < ifaces->len; ++i) {
368 ic = g_ptr_array_index (ifaces, i);
369 offset = method->klass->interface_offsets[ic->interface_id];
370 if (method->slot >= offset && method->slot < offset + ic->method.count)
371 break;
372 ic = NULL;
373 }
374 g_ptr_array_free (ifaces, TRUE);
375 }
376
377 if (!ic)
378 ic = method->klass;
379
380 g_assert (ic);
381 g_assert (MONO_CLASS_IS_INTERFACE (ic));
382
383 t = mono_class_get_type (ic);
384 rt = mono_type_get_object (mono_domain_get(), t);
385
386 return rt;
387 }
388
389 void
390 mono_marshal_init (void)
391 {
392 static gboolean module_initialized = FALSE;
393
394 if (!module_initialized) {
395 module_initialized = TRUE;
396 InitializeCriticalSection (&marshal_mutex);
397 wrapper_hash = g_hash_table_new (mono_aligned_addr_hash, NULL);
398 last_error_tls_id = TlsAlloc ();
399 load_type_info_tls_id = TlsAlloc ();
400
401 register_icall (mono_marshal_string_to_utf16, "mono_marshal_string_to_utf16", "ptr obj", FALSE);
402 register_icall (mono_string_to_utf16, "mono_string_to_utf16", "ptr obj", FALSE);
403 register_icall (mono_string_from_utf16, "mono_string_from_utf16", "obj ptr", FALSE);
404 register_icall (mono_string_new_wrapper, "mono_string_new_wrapper", "obj ptr", FALSE);
405 register_icall (mono_string_to_utf8, "mono_string_to_utf8", "ptr obj", FALSE);
406 register_icall (mono_string_to_lpstr, "mono_string_to_lpstr", "ptr obj", FALSE);
407 register_icall (mono_string_to_bstr, "mono_string_to_bstr", "ptr obj", FALSE);
408 register_icall (mono_string_from_bstr, "mono_string_from_bstr", "obj ptr", FALSE);
409 register_icall (mono_free_bstr, "mono_free_bstr", "void ptr", FALSE);
410 register_icall (mono_string_to_ansibstr, "mono_string_to_ansibstr", "ptr object", FALSE);
411 register_icall (mono_string_builder_to_utf8, "mono_string_builder_to_utf8", "ptr object", FALSE);
412 register_icall (mono_string_builder_to_utf16, "mono_string_builder_to_utf16", "ptr object", FALSE);
413 register_icall (mono_array_to_savearray, "mono_array_to_savearray", "ptr object", FALSE);
414 register_icall (mono_array_to_lparray, "mono_array_to_lparray", "ptr object", FALSE);
415 register_icall (mono_byvalarray_to_array, "mono_byvalarray_to_array", "void object ptr ptr int32", FALSE);
416 register_icall (mono_array_to_byvalarray, "mono_array_to_byvalarray", "void ptr object ptr int32", FALSE);
417 register_icall (mono_delegate_to_ftnptr, "mono_delegate_to_ftnptr", "ptr object", FALSE);
418 register_icall (mono_ftnptr_to_delegate, "mono_ftnptr_to_delegate", "object ptr ptr", FALSE);
419 register_icall (mono_marshal_asany, "mono_marshal_asany", "ptr object int32 int32", FALSE);
420 register_icall (mono_marshal_free_asany, "mono_marshal_free_asany", "void object ptr int32 int32", FALSE);
421 register_icall (mono_marshal_alloc, "mono_marshal_alloc", "ptr int32", FALSE);
422 register_icall (mono_marshal_free, "mono_marshal_free", "void ptr", FALSE);
423 register_icall (mono_marshal_set_last_error, "mono_marshal_set_last_error", "void", FALSE);
424 register_icall (mono_marshal_set_last_error_windows, "mono_marshal_set_last_error_windows", "void int32", FALSE);
425 register_icall (mono_string_utf8_to_builder, "mono_string_utf8_to_builder", "void ptr ptr", FALSE);
426 register_icall (mono_string_utf16_to_builder, "mono_string_utf16_to_builder", "void ptr ptr", FALSE);
427 register_icall (mono_marshal_free_array, "mono_marshal_free_array", "void ptr int32", FALSE);
428 register_icall (mono_string_to_byvalstr, "mono_string_to_byvalstr", "void ptr ptr int32", FALSE);
429 register_icall (mono_string_to_byvalwstr, "mono_string_to_byvalwstr", "void ptr ptr int32", FALSE);
430 register_icall (g_free, "g_free", "void ptr", FALSE);
431 register_icall (mono_object_isinst, "mono_object_isinst", "object object ptr", FALSE);
432 register_icall (mono_struct_delete_old, "mono_struct_delete_old", "void ptr ptr", FALSE);
433 register_icall (mono_remoting_wrapper, "mono_remoting_wrapper", "object ptr ptr", FALSE);
434 register_icall (mono_delegate_begin_invoke, "mono_delegate_begin_invoke", "object object ptr", FALSE);
435 register_icall (mono_delegate_end_invoke, "mono_delegate_end_invoke", "object object ptr", FALSE);
436 register_icall (mono_marshal_xdomain_copy_value, "mono_marshal_xdomain_copy_value", "object object", FALSE);
437 register_icall (mono_marshal_xdomain_copy_out_value, "mono_marshal_xdomain_copy_out_value", "void object object", FALSE);
438 register_icall (mono_marshal_set_domain_by_id, "mono_marshal_set_domain_by_id", "int32 int32 int32", FALSE);
439 register_icall (mono_marshal_check_domain_image, "mono_marshal_check_domain_image", "int32 int32 ptr", FALSE);
440 register_icall (mono_compile_method, "mono_compile_method", "ptr ptr", FALSE);
441 register_icall (mono_context_get, "mono_context_get", "object", FALSE);
442 register_icall (mono_context_set, "mono_context_set", "void object", FALSE);
443 register_icall (mono_upgrade_remote_class_wrapper, "mono_upgrade_remote_class_wrapper", "void object object", FALSE);
444 register_icall (type_from_handle, "type_from_handle", "object ptr", FALSE);
445 register_icall (mono_gc_wbarrier_generic_store, "wb_generic", "void ptr object", FALSE);
446 register_icall (cominterop_get_method_interface, "cominterop_get_method_interface", "object ptr", FALSE);
447 register_icall (cominterop_get_function_pointer, "cominterop_get_function_pointer", "ptr ptr int32", FALSE);
448 register_icall (cominterop_object_is_rcw, "cominterop_object_is_rcw", "int32 object", FALSE);
449 }
450 }
451
452 void
453 mono_marshal_cleanup (void)
454 {
455 g_hash_table_destroy (wrapper_hash);
456 TlsFree (load_type_info_tls_id);
457 TlsFree (last_error_tls_id);
458 DeleteCriticalSection (&marshal_mutex);
459 }
460
461 MonoClass *byte_array_class;
462 static MonoMethod *method_rs_serialize, *method_rs_deserialize, *method_exc_fixexc, *method_rs_appdomain_target;
463 static MonoMethod *method_set_context, *method_get_context;
464 static MonoMethod *method_set_call_context, *method_needs_context_sink, *method_rs_serialize_exc;
465
466 static void
467 mono_remoting_marshal_init (void)
468 {
469 MonoClass *klass;
470
471 static gboolean module_initialized = FALSE;
472
473 if (!module_initialized) {
474 klass = mono_class_from_name (mono_defaults.corlib, "System.Runtime.Remoting", "RemotingServices");
475 method_rs_serialize = mono_class_get_method_from_name (klass, "SerializeCallData", -1);
476 method_rs_deserialize = mono_class_get_method_from_name (klass, "DeserializeCallData", -1);
477 method_rs_serialize_exc = mono_class_get_method_from_name (klass, "SerializeExceptionData", -1);
478
479 klass = mono_defaults.real_proxy_class;
480 method_rs_appdomain_target = mono_class_get_method_from_name (klass, "GetAppDomainTarget", -1);
481
482 klass = mono_defaults.exception_class;
483 method_exc_fixexc = mono_class_get_method_from_name (klass, "FixRemotingException", -1);
484
485 klass = mono_defaults.thread_class;
486 method_get_context = mono_class_get_method_from_name (klass, "get_CurrentContext", -1);
487
488 klass = mono_defaults.appdomain_class;
489 method_set_context = mono_class_get_method_from_name (klass, "InternalSetContext", -1);
490 byte_array_class = mono_array_class_get (mono_defaults.byte_class, 1);
491
492 klass = mono_class_from_name (mono_defaults.corlib, "System.Runtime.Remoting.Messaging", "CallContext");
493 method_set_call_context = mono_class_get_method_from_name (klass, "SetCurrentCallContext", -1);
494
495 klass = mono_class_from_name (mono_defaults.corlib, "System.Runtime.Remoting.Contexts", "Context");
496 method_needs_context_sink = mono_class_get_method_from_name (klass, "get_NeedsContextSink", -1);
497
498 module_initialized = TRUE;
499 }
500 }
501
502 gpointer
503 mono_delegate_to_ftnptr (MonoDelegate *delegate)
504 {
505 MonoMethod *method, *wrapper;
506 MonoClass *klass;
507
508 if (!delegate)
509 return NULL;
510
511 if (delegate->delegate_trampoline)
512 return delegate->delegate_trampoline;
513
514 klass = ((MonoObject *)delegate)->vtable->klass;
515 g_assert (klass->delegate);
516
517 method = delegate->method_info->method;
518
519 wrapper = mono_marshal_get_managed_wrapper (method, klass, delegate->target);
520
521 delegate->delegate_trampoline = mono_compile_method (wrapper);
522
523 // Add the delegate to the delegate hash table
524 delegate_hash_table_add (delegate);
525
526 /* when the object is collected, collect the dunamic method, too */
527 mono_object_register_finalizer ((MonoObject*)delegate);
528
529 return delegate->delegate_trampoline;
530 }
531
532 static GHashTable *delegate_hash_table;
533
534 static GHashTable *
535 delegate_hash_table_new (void) {
536 return g_hash_table_new (NULL, NULL);
537 }
538
539 static void
540 delegate_hash_table_remove (MonoDelegate *d)
541 {
542 mono_marshal_lock ();
543 if (delegate_hash_table == NULL)
544 delegate_hash_table = delegate_hash_table_new ();
545 g_hash_table_remove (delegate_hash_table, d->delegate_trampoline);
546 mono_marshal_unlock ();
547 }
548
549 void
550 delegate_hash_table_add (MonoDelegate *d)
551 {
552 mono_marshal_lock ();
553 if (delegate_hash_table == NULL)
554 delegate_hash_table = delegate_hash_table_new ();
555 g_hash_table_insert (delegate_hash_table, d->delegate_trampoline, d);
556 mono_marshal_unlock ();
557 }
558
559 MonoDelegate*
560 mono_ftnptr_to_delegate (MonoClass *klass, gpointer ftn)
561 {
562 MonoDelegate *d;
563
564 mono_marshal_lock ();
565 if (delegate_hash_table == NULL)
566 delegate_hash_table = delegate_hash_table_new ();
567
568 d = g_hash_table_lookup (delegate_hash_table, ftn);
569 mono_marshal_unlock ();
570 if (d == NULL) {
571 /* This is a native function, so construct a delegate for it */
572 static MonoClass *UnmanagedFunctionPointerAttribute;
573 MonoMethodSignature *sig;
574 MonoMethod *wrapper;
575 MonoMarshalSpec **mspecs;
576 MonoCustomAttrInfo *cinfo;
577 MonoReflectionUnmanagedFunctionPointerAttribute *attr;
578 MonoMethod *invoke = mono_get_delegate_invoke (klass);
579 MonoMethodPInvoke piinfo;
580 int i;
581
582 memset (&piinfo, 0, sizeof (piinfo));
583 if (!UnmanagedFunctionPointerAttribute)
584 UnmanagedFunctionPointerAttribute = mono_class_from_name (mono_defaults.corlib, "System.Runtime.InteropServices", "UnmanagedFunctionPointerAttribute");
585
586 /* The attribute is only available in Net 2.0 */
587 if (UnmanagedFunctionPointerAttribute) {
588 /*
589 * The pinvoke attributes are stored in a real custom attribute so we have to
590 * construct it.
591 */
592 cinfo = mono_custom_attrs_from_class (klass);
593 if (cinfo) {
594 attr = (MonoReflectionUnmanagedFunctionPointerAttribute*)mono_custom_attrs_get_attr (cinfo, UnmanagedFunctionPointerAttribute);
595 if (attr) {
596 piinfo.piflags = (attr->call_conv << 8) | (attr->charset ? (attr->charset - 1) * 2 : 1) | attr->set_last_error;
597 }
598 if (!cinfo->cached)
599 mono_custom_attrs_free (cinfo);
600 }
601 }
602
603 mspecs = g_new0 (MonoMarshalSpec*, mono_method_signature (invoke)->param_count + 1);
604 mono_method_get_marshal_info (invoke, mspecs);
605 /* Freed below so don't alloc from mempool */
606 sig = mono_metadata_signature_dup (mono_method_signature (invoke));
607 sig->hasthis = 0;
608
609 wrapper = mono_marshal_get_native_func_wrapper (klass->image, sig, &piinfo, mspecs, ftn);
610
611 for (i = mono_method_signature (invoke)->param_count; i >= 0; i--)
612 if (mspecs [i])
613 mono_metadata_free_marshal_spec (mspecs [i]);
614 g_free (mspecs);
615 g_free (sig);
616
617 d = (MonoDelegate*)mono_object_new (mono_domain_get (), klass);
618 mono_delegate_ctor ((MonoObject*)d, NULL, mono_compile_method (wrapper));
619 }
620
621 if (d->object.vtable->domain != mono_domain_get ())
622 mono_raise_exception (mono_get_exception_not_supported ("Delegates cannot be marshalled from native code into a domain other than their home domain"));
623
624 return d;
625 }
626
627 void
628 mono_delegate_free_ftnptr (MonoDelegate *delegate)
629 {
630 MonoJitInfo *ji;
631 void *ptr;
632
633 delegate_hash_table_remove (delegate);
634
635 ptr = (gpointer)InterlockedExchangePointer (&delegate->delegate_trampoline, NULL);
636
637 if (!delegate->target) {
638 /* The wrapper method is shared between delegates -> no need to free it */
639 return;
640 }
641
642 if (ptr) {
643 ji = mono_jit_info_table_find (mono_domain_get (), mono_get_addr_from_ftnptr (ptr));
644 g_assert (ji);
645
646 mono_runtime_free_method (mono_object_domain (delegate), ji->method);
647 }
648 }
649
650 gpointer
651 mono_array_to_savearray (MonoArray *array)
652 {
653 if (!array)
654 return NULL;
655
656 g_assert_not_reached ();
657 return NULL;
658 }
659
660 gpointer
661 mono_array_to_lparray (MonoArray *array)
662 {
663 if (!array)
664 return NULL;
665
666 /* fixme: maybe we need to make a copy */
667 return array->vector;
668 }
669
670 static void
671 mono_byvalarray_to_array (MonoArray *arr, gpointer native_arr, MonoClass *elclass, guint32 elnum)
672 {
673 g_assert (arr->obj.vtable->klass->element_class == mono_defaults.char_class);
674
675 if (elclass == mono_defaults.byte_class) {
676 GError *error = NULL;
677 guint16 *ut;
678 glong items_written;
679
680 ut = g_utf8_to_utf16 (native_arr, elnum, NULL, &items_written, &error);
681
682 if (!error) {
683 memcpy (mono_array_addr (arr, guint16, 0), ut, items_written * sizeof (guint16));
684 g_free (ut);
685 }
686 else
687 g_error_free (error);
688 }
689 else
690 g_assert_not_reached ();
691 }
692
693 static void
694 mono_array_to_byvalarray (gpointer native_arr, MonoArray *arr, MonoClass *elclass, guint32 elnum)
695 {
696 g_assert (arr->obj.vtable->klass->element_class == mono_defaults.char_class);
697
698 if (elclass == mono_defaults.byte_class) {
699 char *as;
700 GError *error = NULL;
701
702 as = g_utf16_to_utf8 (mono_array_addr (arr, gunichar2, 0), mono_array_length (arr), NULL, NULL, &error);
703 if (error) {
704 MonoException *exc = mono_get_exception_argument ("string", error->message);
705 g_error_free (error);
706 mono_raise_exception (exc);
707 }
708
709 memcpy (native_arr, as, MIN (strlen (as), elnum));
710 g_free (as);
711 } else {
712 g_assert_not_reached ();
713 }
714 }
715
716 void
717 mono_string_utf8_to_builder (MonoStringBuilder *sb, char *text)
718 {
719 GError *error = NULL;
720 guint16 *ut;
721 glong items_written;
722 int l;
723
724 if (!sb || !text)
725 return;
726
727 l = strlen (text);
728
729 ut = g_utf8_to_utf16 (text, l, NULL, &items_written, &error);
730
731 if (items_written > mono_stringbuilder_capacity (sb))
732 items_written = mono_stringbuilder_capacity (sb);
733
734 if (!error) {
735 if (! sb->str || sb->str == sb->cached_str) {
736 MONO_OBJECT_SETREF (sb, str, mono_string_new_size (mono_domain_get (), items_written));
737 sb->cached_str = NULL;
738 }
739
740 memcpy (mono_string_chars (sb->str), ut, items_written * 2);
741 sb->length = items_written;
742 } else
743 g_error_free (error);
744
745 g_free (ut);
746 }
747
748 /*
749 * FIXME: This routine does not seem to do what it seems to do
750 * the @text is never copied into the string builder
751 */
752 void
753 mono_string_utf16_to_builder (MonoStringBuilder *sb, gunichar2 *text)
754 {
755 guint32 len;
756
757 if (!sb || !text)
758 return;
759
760 g_assert (mono_string_chars (sb->str) == text);
761
762 for (len = 0; text [len] != 0; ++len)
763 ;
764
765 sb->length = len;
766 }
767
768 /**
769 * mono_string_builder_to_utf8:
770 * @sb: the string builder
771 *
772 * Converts to utf8 the contents of the MonoStringBuilder.
773 *
774 * Returns: a utf8 string with the contents of the StringBuilder.
775 *
776 * The return value must be released with g_free.
777 */
778 gpointer
779 mono_string_builder_to_utf8 (MonoStringBuilder *sb)
780 {
781 GError *error = NULL;
782 glong *res;
783 gchar *tmp;
784
785 if (!sb)
786 return NULL;
787
788 if ((sb->str == sb->cached_str) && (sb->str->length == 0)) {
789 /*
790 * The sb could have been allocated with the default capacity and be empty.
791 * we need to alloc a buffer of the default capacity in this case.
792 */
793 MONO_OBJECT_SETREF (sb, str, mono_string_new_size (mono_domain_get (), 16));
794 sb->cached_str = NULL;
795 }
796
797 res = mono_marshal_alloc (mono_stringbuilder_capacity (sb) + 1);
798
799 tmp = g_utf16_to_utf8 (mono_string_chars (sb->str), sb->length, NULL, res, &error);
800 if (error) {
801 g_error_free (error);
802 mono_marshal_free (res);
803 mono_raise_exception (mono_get_exception_execution_engine ("Failed to convert StringBuilder from utf16 to utf8"));
804 } else {
805 memcpy (res, tmp, sb->length + 1);
806 g_free (tmp);
807 }
808
809 return res;
810 }
811
812 /**
813 * mono_string_builder_to_utf16:
814 * @sb: the string builder
815 *
816 * Converts to utf16 the contents of the MonoStringBuilder.
817 *
818 * Returns: a utf16 string with the contents of the StringBuilder.
819 *
820 * The return value must not be freed.
821 */
822 gpointer
823 mono_string_builder_to_utf16 (MonoStringBuilder *sb)
824 {
825 if (!sb)
826 return NULL;
827
828 g_assert (sb->str);
829
830 /*
831 * The stringbuilder might not have ownership of this string. If this is
832 * the case, we must duplicate the string, so that we don't munge immutable
833 * strings
834 */
835 if (sb->str == sb->cached_str) {
836 /*
837 * The sb could have been allocated with the default capacity and be empty.
838 * we need to alloc a buffer of the default capacity in this case.
839 */
840 if (sb->str->length == 0)
841 MONO_OBJECT_SETREF (sb, str, mono_string_new_size (mono_domain_get (), 16));
842 else
843 MONO_OBJECT_SETREF (sb, str, mono_string_new_utf16 (mono_domain_get (), mono_string_chars (sb->str), mono_stringbuilder_capacity (sb)));
844 sb->cached_str = NULL;
845 }
846
847 return mono_string_chars (sb->str);
848 }
849
850 static gpointer
851 mono_string_to_lpstr (MonoString *s)
852 {
853 #ifdef PLATFORM_WIN32
854 char *as, *tmp;
855 glong len;
856 GError *error = NULL;
857
858 if (s == NULL)
859 return NULL;
860
861 if (!s->length) {
862 as = CoTaskMemAlloc (1);
863 as [0] = '\0';
864 return as;
865 }
866
867 tmp = g_utf16_to_utf8 (mono_string_chars (s), s->length, NULL, &len, &error);
868 if (error) {
869 MonoException *exc = mono_get_exception_argument ("string", error->message);
870 g_error_free (error);
871 mono_raise_exception(exc);
872 return NULL;
873 } else {
874 as = CoTaskMemAlloc (len + 1);
875 memcpy (as, tmp, len + 1);
876 g_free (tmp);
877 return as;
878 }
879 #else
880 return mono_string_to_utf8 (s);
881 #endif
882 }
883
884 gpointer
885 mono_string_to_ansibstr (MonoString *string_obj)
886 {
887 g_error ("UnmanagedMarshal.BStr is not implemented.");
888 return NULL;
889 }
890
891 gpointer
892 mono_string_to_bstr (MonoString *string_obj)
893 {
894 #ifdef PLATFORM_WIN32
895 if (!string_obj)
896 return NULL;
897 return SysAllocStringLen (mono_string_chars (string_obj), mono_string_length (string_obj));
898 #else
899 g_error ("UnmanagedMarshal.BStr is not implemented.");
900 return NULL;
901 #endif
902 }
903
904 MonoString *
905 mono_string_from_bstr (gpointer bstr)
906 {
907 #ifdef PLATFORM_WIN32
908 if (!bstr)
909 return NULL;
910 return mono_string_new_utf16 (mono_domain_get (), bstr, SysStringLen (bstr));
911 #else
912 g_error ("UnmanagedMarshal.BStr is not implemented.");
913 return NULL;
914 #endif
915 }
916
917 void
918 mono_free_bstr (gpointer bstr)
919 {
920 #ifdef PLATFORM_WIN32
921 SysFreeString ((BSTR)bstr);
922 #else
923 g_error ("Free BSTR is not implemented.");
924 #endif
925 }
926
927 /**
928 * mono_string_to_byvalstr:
929 * @dst: Where to store the null-terminated utf8 decoded string.
930 * @src: the MonoString to copy.
931 * @size: the maximum number of bytes to copy.
932 *
933 * Copies the MonoString pointed to by @src as a utf8 string
934 * into @dst, it copies at most @size bytes into the destination.
935 */
936 void
937 mono_string_to_byvalstr (gpointer dst, MonoString *src, int size)
938 {
939 char *s;
940 int len;
941
942 g_assert (dst != NULL);
943 g_assert (size > 0);
944
945 memset (dst, 0, size);
946
947 if (!src)
948 return;
949
950 s = mono_string_to_utf8 (src);
951 len = MIN (size, strlen (s));
952 memcpy (dst, s, len);
953 g_free (s);
954
955 *((char *)dst + size - 1) = 0;
956 }
957
958 /**
959 * mono_string_to_byvalwstr:
960 * @dst: Where to store the null-terminated utf16 decoded string.
961 * @src: the MonoString to copy.
962 * @size: the maximum number of bytes to copy.
963 *
964 * Copies the MonoString pointed to by @src as a utf16 string
965 * into @dst, it copies at most @size bytes into the destination.
966 */
967 void
968 mono_string_to_byvalwstr (gpointer dst, MonoString *src, int size)
969 {
970 int len;
971
972 g_assert (dst != NULL);
973 g_assert (size > 1);
974
975 if (!src) {
976 memset (dst, 0, size * 2);
977 return;
978 }
979
980 len = MIN (size, (mono_string_length (src)));
981 memcpy (dst, mono_string_chars (src), len * 2);
982
983 *((gunichar2 *)dst + len - 1) = 0;
984 }
985
986 void
987 mono_mb_free (MonoMethodBuilder *mb)
988 {
989 g_list_free (mb->locals_list);
990 if (!mb->dynamic) {
991 g_free (mb->method);
992 g_free (mb->name);
993 g_free (mb->code);
994 }
995 g_free (mb);
996 }
997
998 MonoMethodBuilder *
999 mono_mb_new (MonoClass *klass, const char *name, MonoWrapperType type)
1000 {
1001 MonoMethodBuilder *mb;
1002 MonoMethod *m;
1003
1004 g_assert (klass != NULL);
1005 g_assert (name != NULL);
1006
1007 mb = g_new0 (MonoMethodBuilder, 1);
1008
1009 mb->method = m = (MonoMethod *)g_new0 (MonoMethodWrapper, 1);
1010
1011 m->klass = klass;
1012 m->inline_info = 1;
1013 m->wrapper_type = type;
1014
1015 mb->name = g_strdup (name);
1016 mb->code_size = 40;
1017 mb->code = g_malloc (mb->code_size);
1018
1019 return mb;
1020 }
1021
1022 int
1023 mono_mb_add_local (MonoMethodBuilder *mb, MonoType *type)
1024 {
1025 int res;
1026
1027 g_assert (mb != NULL);
1028 g_assert (type != NULL);
1029
1030 res = mb->locals;
1031 mb->locals_list = g_list_append (mb->locals_list, type);
1032 mb->locals++;
1033
1034 return res;
1035 }
1036
1037 /**
1038 * mono_mb_create_method:
1039 *
1040 * Create a MonoMethod from this method builder.
1041 * Returns: the newly created method.
1042 *
1043 * LOCKING: Assumes the loader lock is held.
1044 */
1045 MonoMethod *
1046 mono_mb_create_method (MonoMethodBuilder *mb, MonoMethodSignature *signature, int max_stack)
1047 {
1048 MonoMethodHeader *header;
1049 MonoMethodWrapper *mw;
1050 MonoMemPool *mp;
1051 MonoMethod *method;
1052 GList *l;
1053 int i;
1054
1055 g_assert (mb != NULL);
1056
1057 mp = mb->method->klass->image->mempool;
1058
1059 mono_loader_lock ();
1060 if (mb->dynamic) {
1061 method = mb->method;
1062
1063 method->name = mb->name;
1064 method->dynamic = TRUE;
1065
1066 ((MonoMethodNormal *)method)->header = header = (MonoMethodHeader *)
1067 g_malloc0 (sizeof (MonoMethodHeader) + mb->locals * sizeof (MonoType *));
1068
1069 header->code = mb->code;
1070 } else {
1071 /* Realloc the method info into a mempool */
1072
1073 method = mono_mempool_alloc (mp, sizeof (MonoMethodWrapper));
1074 memcpy (method, mb->method, sizeof (MonoMethodWrapper));
1075
1076 method->name = mono_mempool_strdup (mp, mb->name);
1077
1078 ((MonoMethodNormal *)method)->header = header = (MonoMethodHeader *)
1079 mono_mempool_alloc0 (mp, sizeof (MonoMethodHeader) + mb->locals * sizeof (MonoType *));
1080
1081 header->code = mono_mempool_alloc (mp, mb->pos);
1082 memcpy ((char*)header->code, mb->code, mb->pos);
1083 }
1084
1085 if (max_stack < 8)
1086 max_stack = 8;
1087
1088 header->max_stack = max_stack;
1089
1090 for (i = 0, l = mb->locals_list; l; l = l->next, i++) {
1091 header->locals [i] = (MonoType *)l->data;
1092 }
1093
1094 method->signature = signature;
1095
1096 header->code_size = mb->pos;
1097 header->num_locals = mb->locals;
1098
1099 mw = (MonoMethodWrapper*) mb->method;
1100 i = g_list_length (mw->method_data);
1101 if (i) {
1102 GList *tmp;
1103 void **data;
1104 l = g_list_reverse (mw->method_data);
1105 if (method->dynamic)
1106 data = g_malloc (sizeof (gpointer) * (i + 1));
1107 else
1108 data = mono_mempool_alloc (mp, sizeof (gpointer) * (i + 1));
1109 /* store the size in the first element */
1110 data [0] = GUINT_TO_POINTER (i);
1111 i = 1;
1112 for (tmp = l; tmp; tmp = tmp->next) {
1113 data [i++] = tmp->data;
1114 }
1115 g_list_free (l);
1116
1117 ((MonoMethodWrapper*)method)->method_data = data;
1118 }
1119 /*{
1120 static int total_code = 0;
1121 static int total_alloc = 0;
1122 total_code += mb->pos;
1123 total_alloc += mb->code_size;
1124 g_print ("code size: %d of %d (allocated: %d)\n", mb->pos, total_code, total_alloc);
1125 }*/
1126
1127 #ifdef DEBUG_RUNTIME_CODE
1128 printf ("RUNTIME CODE FOR %s\n", mono_method_full_name (method, TRUE));
1129 printf ("%s\n", mono_disasm_code (&marshal_dh, method, mb->code, mb->code + mb->pos));
1130 #endif
1131
1132 mono_loader_unlock ();
1133 return method;
1134 }
1135
1136 guint32
1137 mono_mb_add_data (MonoMethodBuilder *mb, gpointer data)
1138 {
1139 MonoMethodWrapper *mw;
1140
1141 g_assert (mb != NULL);
1142
1143 mw = (MonoMethodWrapper *)mb->method;
1144
1145 /* one O(n) is enough */
1146 mw->method_data = g_list_prepend (mw->method_data, data);
1147
1148 return g_list_length (mw->method_data);
1149 }
1150
1151 void
1152 mono_mb_patch_addr (MonoMethodBuilder *mb, int pos, int value)
1153 {
1154 mb->code [pos] = value & 0xff;
1155 mb->code [pos + 1] = (value >> 8) & 0xff;
1156 mb->code [pos + 2] = (value >> 16) & 0xff;
1157 mb->code [pos + 3] = (value >> 24) & 0xff;
1158 }
1159
1160 void
1161 mono_mb_patch_addr_s (MonoMethodBuilder *mb, int pos, gint8 value)
1162 {
1163 *((gint8 *)(&mb->code [pos])) = value;
1164 }
1165
1166 void
1167 mono_mb_emit_byte (MonoMethodBuilder *mb, guint8 op)
1168 {
1169 if (mb->pos >= mb->code_size) {
1170 mb->code_size += mb->code_size >> 1;
1171 mb->code = g_realloc (mb->code, mb->code_size);
1172 }
1173
1174 mb->code [mb->pos++] = op;
1175 }
1176
1177 void
1178 mono_mb_emit_ldflda (MonoMethodBuilder *mb, gint32 offset)
1179 {
1180 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
1181 mono_mb_emit_byte (mb, CEE_MONO_OBJADDR);
1182
1183 if (offset) {
1184 mono_mb_emit_icon (mb, offset);
1185 mono_mb_emit_byte (mb, CEE_ADD);
1186 }
1187 }
1188
1189 static int
1190 mono_mb_emit_proxy_check (MonoMethodBuilder *mb, int branch_code)
1191 {
1192 int pos;
1193 mono_mb_emit_ldflda (mb, G_STRUCT_OFFSET (MonoObject, vtable));
1194 mono_mb_emit_byte (mb, CEE_LDIND_I);
1195 mono_mb_emit_icon (mb, G_STRUCT_OFFSET (MonoVTable, klass));
1196 mono_mb_emit_byte (mb, CEE_ADD);
1197 mono_mb_emit_byte (mb, CEE_LDIND_I);
1198 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
1199 mono_mb_emit_byte (mb, CEE_MONO_CLASSCONST);
1200 mono_mb_emit_i4 (mb, mono_mb_add_data (mb, mono_defaults.transparent_proxy_class));
1201 mono_mb_emit_byte (mb, branch_code);
1202 pos = mb->pos;
1203 mono_mb_emit_i4 (mb, 0);
1204 return pos;
1205 }
1206
1207 static int
1208 mono_mb_emit_xdomain_check (MonoMethodBuilder *mb, int branch_code)
1209 {
1210 int pos;
1211 mono_mb_emit_ldflda (mb, G_STRUCT_OFFSET (MonoTransparentProxy, rp));
1212 mono_mb_emit_byte (mb, CEE_LDIND_REF);
1213 mono_mb_emit_ldflda (mb, G_STRUCT_OFFSET (MonoRealProxy, target_domain_id));
1214 mono_mb_emit_byte (mb, CEE_LDIND_I4);
1215 mono_mb_emit_icon (mb, -1);
1216 mono_mb_emit_byte (mb, branch_code);
1217 pos = mb->pos;
1218 mono_mb_emit_i4 (mb, 0);
1219 return pos;
1220 }
1221
1222 void
1223 mono_mb_emit_i4 (MonoMethodBuilder *mb, gint32 data)
1224 {
1225 if ((mb->pos + 4) >= mb->code_size) {
1226 mb->code_size += mb->code_size >> 1;
1227 mb->code = g_realloc (mb->code, mb->code_size);
1228 }
1229
1230 mono_mb_patch_addr (mb, mb->pos, data);
1231 mb->pos += 4;
1232 }
1233
1234 void
1235 mono_mb_emit_i2 (MonoMethodBuilder *mb, gint16 data)
1236 {
1237 if ((mb->pos + 2) >= mb->code_size) {
1238 mb->code_size += mb->code_size >> 1;
1239 mb->code = g_realloc (mb->code, mb->code_size);
1240 }
1241
1242 mb->code [mb->pos] = data & 0xff;
1243 mb->code [mb->pos + 1] = (data >> 8) & 0xff;
1244 mb->pos += 2;
1245 }
1246
1247 static inline void
1248 mono_mb_emit_op (MonoMethodBuilder *mb, guint8 op, gpointer data)
1249 {
1250 mono_mb_emit_byte (mb, op);
1251 mono_mb_emit_i4 (mb, mono_mb_add_data (mb, data));
1252 }
1253
1254 void
1255 mono_mb_emit_ldstr (MonoMethodBuilder *mb, char *str)
1256 {
1257 mono_mb_emit_op (mb, CEE_LDSTR, str);
1258 }
1259
1260 void
1261 mono_mb_emit_ldarg (MonoMethodBuilder *mb, guint argnum)
1262 {
1263 if (argnum < 4) {
1264 mono_mb_emit_byte (mb, CEE_LDARG_0 + argnum);
1265 } else if (argnum < 256) {
1266 mono_mb_emit_byte (mb, CEE_LDARG_S);
1267 mono_mb_emit_byte (mb, argnum);
1268 } else {
1269 mono_mb_emit_byte (mb, CEE_PREFIX1);
1270 mono_mb_emit_byte (mb, CEE_LDARG);
1271 mono_mb_emit_i2 (mb, argnum);
1272 }
1273 }
1274
1275 void
1276 mono_mb_emit_ldarg_addr (MonoMethodBuilder *mb, guint argnum)
1277 {
1278 if (argnum < 256) {
1279 mono_mb_emit_byte (mb, CEE_LDARGA_S);
1280 mono_mb_emit_byte (mb, argnum);
1281 } else {
1282 mono_mb_emit_byte (mb, CEE_PREFIX1);
1283 mono_mb_emit_byte (mb, CEE_LDARGA);
1284 mono_mb_emit_i2 (mb, argnum);
1285 }
1286 }
1287
1288 void
1289 mono_mb_emit_ldloc_addr (MonoMethodBuilder *mb, guint locnum)
1290 {
1291 if (locnum < 256) {
1292 mono_mb_emit_byte (mb, CEE_LDLOCA_S);
1293 mono_mb_emit_byte (mb, locnum);
1294 } else {
1295 mono_mb_emit_byte (mb, CEE_PREFIX1);
1296 mono_mb_emit_byte (mb, CEE_LDLOCA);
1297 mono_mb_emit_i2 (mb, locnum);
1298 }
1299 }
1300
1301 void
1302 mono_mb_emit_ldloc (MonoMethodBuilder *mb, guint num)
1303 {
1304 if (num < 4) {
1305 mono_mb_emit_byte (mb, CEE_LDLOC_0 + num);
1306 } else if (num < 256) {
1307 mono_mb_emit_byte (mb, CEE_LDLOC_S);
1308 mono_mb_emit_byte (mb, num);
1309 } else {
1310 mono_mb_emit_byte (mb, CEE_PREFIX1);
1311 mono_mb_emit_byte (mb, CEE_LDLOC);
1312 mono_mb_emit_i2 (mb, num);
1313 }
1314 }
1315
1316 void
1317 mono_mb_emit_stloc (MonoMethodBuilder *mb, guint num)
1318 {
1319 if (num < 4) {
1320 mono_mb_emit_byte (mb, CEE_STLOC_0 + num);
1321 } else if (num < 256) {
1322 mono_mb_emit_byte (mb, CEE_STLOC_S);
1323 mono_mb_emit_byte (mb, num);
1324 } else {
1325 mono_mb_emit_byte (mb, CEE_PREFIX1);
1326 mono_mb_emit_byte (mb, CEE_STLOC);
1327 mono_mb_emit_i2 (mb, num);
1328 }
1329 }
1330
1331 void
1332 mono_mb_emit_icon (MonoMethodBuilder *mb, gint32 value)
1333 {
1334 if (value >= -1 && value < 8) {
1335 mono_mb_emit_byte (mb, CEE_LDC_I4_0 + value);
1336 } else if (value >= -128 && value <= 127) {
1337 mono_mb_emit_byte (mb, CEE_LDC_I4_S);
1338 mono_mb_emit_byte (mb, value);
1339 } else {
1340 mono_mb_emit_byte (mb, CEE_LDC_I4);
1341 mono_mb_emit_i4 (mb, value);
1342 }
1343 }
1344
1345 guint32
1346 mono_mb_emit_branch (MonoMethodBuilder *mb, guint8 op)
1347 {
1348 guint32 res;
1349 mono_mb_emit_byte (mb, op);
1350 res = mb->pos;
1351 mono_mb_emit_i4 (mb, 0);
1352 return res;
1353 }
1354
1355 guint32
1356 mono_mb_emit_short_branch (MonoMethodBuilder *mb, guint8 op)
1357 {
1358 guint32 res;
1359 mono_mb_emit_byte (mb, op);
1360 res = mb->pos;
1361 mono_mb_emit_byte (mb, 0);
1362
1363 return res;
1364 }
1365
1366 static void
1367 mono_mb_patch_branch (MonoMethodBuilder *mb, guint32 pos)
1368 {
1369 mono_mb_patch_addr (mb, pos, mb->pos - (pos + 4));
1370 }
1371
1372 static void
1373 mono_mb_patch_short_branch (MonoMethodBuilder *mb, guint32 pos)
1374 {
1375 mono_mb_patch_addr_s (mb, pos, mb->pos - (pos + 1));
1376 }
1377
1378 static void
1379 mono_mb_emit_ptr (MonoMethodBuilder *mb, gpointer ptr)
1380 {
1381 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
1382 mono_mb_emit_op (mb, CEE_MONO_LDPTR, ptr);
1383 }
1384
1385 static void
1386 mono_mb_emit_calli (MonoMethodBuilder *mb, MonoMethodSignature *sig)
1387 {
1388 mono_mb_emit_op (mb, CEE_CALLI, sig);
1389 }
1390
1391 void
1392 mono_mb_emit_managed_call (MonoMethodBuilder *mb, MonoMethod *method, MonoMethodSignature *opt_sig)
1393 {
1394 mono_mb_emit_op (mb, CEE_CALL, method);
1395 }
1396
1397 void
1398 mono_mb_emit_native_call (MonoMethodBuilder *mb, MonoMethodSignature *sig, gpointer func)
1399 {
1400 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
1401 mono_mb_emit_byte (mb, CEE_MONO_SAVE_LMF);
1402 mono_mb_emit_ptr (mb, func);
1403 mono_mb_emit_calli (mb, sig);
1404 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
1405 mono_mb_emit_byte (mb, CEE_MONO_RESTORE_LMF);
1406 }
1407
1408 static void
1409 mono_mb_emit_icall (MonoMethodBuilder *mb, gpointer func)
1410 {
1411 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
1412 mono_mb_emit_op (mb, CEE_MONO_ICALL, func);
1413 }
1414
1415 static void
1416 mono_mb_emit_cominterop_call (MonoMethodBuilder *mb, MonoMethodSignature *sig, MonoMethod* method)
1417 {
1418 // get function pointer from 1st arg, the COM interface pointer
1419 mono_mb_emit_ldarg (mb, 0);
1420 mono_mb_emit_icon (mb, cominterop_get_com_slot_for_method (method));
1421 mono_mb_emit_icall (mb, cominterop_get_function_pointer);
1422
1423 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
1424 mono_mb_emit_byte (mb, CEE_MONO_SAVE_LMF);
1425 mono_mb_emit_calli (mb, sig);
1426 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
1427 mono_mb_emit_byte (mb, CEE_MONO_RESTORE_LMF);
1428 }
1429
1430 static void
1431 mono_mb_emit_exception_full (MonoMethodBuilder *mb, const char *exc_nspace, const char *exc_name, const char *msg)
1432 {
1433 MonoMethod *ctor = NULL;
1434
1435 MonoClass *mme = mono_class_from_name (mono_defaults.corlib, exc_nspace, exc_name);
1436 mono_class_init (mme);
1437 ctor = mono_class_get_method_from_name (mme, ".ctor", 0);
1438 g_assert (ctor);
1439 mono_mb_emit_op (mb, CEE_NEWOBJ, ctor);
1440 if (msg != NULL) {
1441 mono_mb_emit_byte (mb, CEE_DUP);
1442 mono_mb_emit_ldflda (mb, G_STRUCT_OFFSET (MonoException, message));
1443 mono_mb_emit_ldstr (mb, (char*)msg);
1444 mono_mb_emit_byte (mb, CEE_STIND_REF);
1445 }
1446 mono_mb_emit_byte (mb, CEE_THROW);
1447 }
1448
1449 void
1450 mono_mb_emit_exception (MonoMethodBuilder *mb, const char *exc_name, const char *msg)
1451 {
1452 mono_mb_emit_exception_full (mb, "System", exc_name, msg);
1453 }
1454
1455 static void
1456 mono_mb_emit_exception_marshal_directive (MonoMethodBuilder *mb, const char *msg)
1457 {
1458 mono_mb_emit_exception_full (mb, "System.Runtime.InteropServices", "MarshalDirectiveException", msg);
1459 }
1460
1461 void
1462 mono_mb_emit_add_to_local (MonoMethodBuilder *mb, guint16 local, gint32 incr)
1463 {
1464 mono_mb_emit_ldloc (mb, local);
1465 mono_mb_emit_icon (mb, incr);
1466 mono_mb_emit_byte (mb, CEE_ADD);
1467 mono_mb_emit_stloc (mb, local);
1468 }
1469
1470 guint
1471 mono_type_to_ldind (MonoType *type)
1472 {
1473 if (type->byref)
1474 return CEE_LDIND_I;
1475
1476 handle_enum:
1477 switch (type->type) {
1478 case MONO_TYPE_I1:
1479 return CEE_LDIND_I1;
1480 case MONO_TYPE_U1:
1481 case MONO_TYPE_BOOLEAN:
1482 return CEE_LDIND_U1;
1483 case MONO_TYPE_I2:
1484 return CEE_LDIND_I2;
1485 case MONO_TYPE_U2:
1486 case MONO_TYPE_CHAR:
1487 return CEE_LDIND_U2;
1488 case MONO_TYPE_I4:
1489 return CEE_LDIND_I4;
1490 case MONO_TYPE_U4:
1491 return CEE_LDIND_U4;
1492 case MONO_TYPE_I:
1493 case MONO_TYPE_U:
1494 case MONO_TYPE_PTR:
1495 case MONO_TYPE_FNPTR:
1496 return CEE_LDIND_I;
1497 case MONO_TYPE_CLASS:
1498 case MONO_TYPE_STRING:
1499 case MONO_TYPE_OBJECT:
1500 case MONO_TYPE_SZARRAY:
1501 case MONO_TYPE_ARRAY:
1502 return CEE_LDIND_REF;
1503 case MONO_TYPE_I8:
1504 case MONO_TYPE_U8:
1505 return CEE_LDIND_I8;
1506 case MONO_TYPE_R4:
1507 return CEE_LDIND_R4;
1508 case MONO_TYPE_R8:
1509 return CEE_LDIND_R8;
1510 case MONO_TYPE_VALUETYPE:
1511 if (type->data.klass->enumtype) {
1512 type = type->data.klass->enum_basetype;
1513 goto handle_enum;
1514 }
1515 return CEE_LDOBJ;
1516 case MONO_TYPE_TYPEDBYREF:
1517 return CEE_LDOBJ;
1518 case MONO_TYPE_GENERICINST:
1519 type = &type->data.generic_class->container_class->byval_arg;
1520 goto handle_enum;
1521 default:
1522 g_error ("unknown type 0x%02x in type_to_ldind", type->type);
1523 }
1524 return -1;
1525 }
1526
1527 guint
1528 mono_type_to_stind (MonoType *type)
1529 {
1530 if (type->byref)
1531 return CEE_STIND_I;
1532
1533 handle_enum:
1534 switch (type->type) {
1535 case MONO_TYPE_I1:
1536 case MONO_TYPE_U1:
1537 case MONO_TYPE_BOOLEAN:
1538 return CEE_STIND_I1;
1539 case MONO_TYPE_I2:
1540 case MONO_TYPE_U2:
1541 case MONO_TYPE_CHAR:
1542 return CEE_STIND_I2;
1543 case MONO_TYPE_I4:
1544 case MONO_TYPE_U4:
1545 return CEE_STIND_I4;
1546 case MONO_TYPE_I:
1547 case MONO_TYPE_U:
1548 case MONO_TYPE_PTR:
1549 case MONO_TYPE_FNPTR:
1550 return CEE_STIND_I;
1551 case MONO_TYPE_CLASS:
1552 case MONO_TYPE_STRING:
1553 case MONO_TYPE_OBJECT:
1554 case MONO_TYPE_SZARRAY:
1555 case MONO_TYPE_ARRAY:
1556 return CEE_STIND_REF;
1557 case MONO_TYPE_I8:
1558 case MONO_TYPE_U8:
1559 return CEE_STIND_I8;
1560 case MONO_TYPE_R4:
1561 return CEE_STIND_R4;
1562 case MONO_TYPE_R8:
1563 return CEE_STIND_R8;
1564 case MONO_TYPE_VALUETYPE:
1565 if (type->data.klass->enumtype) {
1566 type = type->data.klass->enum_basetype;
1567 goto handle_enum;
1568 }
1569 return CEE_STOBJ;
1570 case MONO_TYPE_TYPEDBYREF:
1571 return CEE_STOBJ;
1572 case MONO_TYPE_GENERICINST:
1573 type = &type->data.generic_class->container_class->byval_arg;
1574 goto handle_enum;
1575 default:
1576 g_error ("unknown type 0x%02x in type_to_stind", type->type);
1577 }
1578 return -1;
1579 }
1580
1581 static void
1582 emit_ptr_to_object_conv (MonoMethodBuilder *mb, MonoType *type, MonoMarshalConv conv, MonoMarshalSpec *mspec)
1583 {
1584 switch (conv) {
1585 case MONO_MARSHAL_CONV_BOOL_I4:
1586 mono_mb_emit_ldloc (mb, 1);
1587 mono_mb_emit_ldloc (mb, 0);
1588 mono_mb_emit_byte (mb, CEE_LDIND_I4);
1589 mono_mb_emit_byte (mb, CEE_BRFALSE_S);
1590 mono_mb_emit_byte (mb, 3);
1591 mono_mb_emit_byte (mb, CEE_LDC_I4_1);
1592 mono_mb_emit_byte (mb, CEE_BR_S);
1593 mono_mb_emit_byte (mb, 1);
1594 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
1595 mono_mb_emit_byte (mb, CEE_STIND_I1);
1596 break;
1597 case MONO_MARSHAL_CONV_BOOL_VARIANTBOOL:
1598 mono_mb_emit_ldloc (mb, 1);
1599 mono_mb_emit_ldloc (mb, 0);
1600 mono_mb_emit_byte (mb, CEE_LDIND_I2);
1601 mono_mb_emit_byte (mb, CEE_BRFALSE_S);
1602 mono_mb_emit_byte (mb, 3);
1603 mono_mb_emit_byte (mb, CEE_LDC_I4_1);
1604 mono_mb_emit_byte (mb, CEE_BR_S);
1605 mono_mb_emit_byte (mb, 1);
1606 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
1607 mono_mb_emit_byte (mb, CEE_STIND_I1);
1608 break;
1609 case MONO_MARSHAL_CONV_ARRAY_BYVALARRAY: {
1610 MonoClass *eklass = NULL;
1611 int esize;
1612
1613 if (type->type == MONO_TYPE_SZARRAY) {
1614 eklass = type->data.klass;
1615 } else {
1616 g_assert_not_reached ();
1617 }
1618
1619 esize = mono_class_native_size (eklass, NULL);
1620
1621 /* create a new array */
1622 mono_mb_emit_ldloc (mb, 1);
1623 mono_mb_emit_icon (mb, mspec->data.array_data.num_elem);
1624 mono_mb_emit_op (mb, CEE_NEWARR, eklass);
1625 mono_mb_emit_byte (mb, CEE_STIND_I);
1626
1627 if (eklass->blittable) {
1628 /* copy the elements */
1629 mono_mb_emit_ldloc (mb, 1);
1630 mono_mb_emit_byte (mb, CEE_LDIND_I);
1631 mono_mb_emit_icon (mb, G_STRUCT_OFFSET (MonoArray, vector));
1632 mono_mb_emit_byte (mb, CEE_ADD);
1633 mono_mb_emit_ldloc (mb, 0);
1634 mono_mb_emit_icon (mb, mspec->data.array_data.num_elem * esize);
1635 mono_mb_emit_byte (mb, CEE_PREFIX1);
1636 mono_mb_emit_byte (mb, CEE_CPBLK);
1637 }
1638 else {
1639 int array_var, src_var, dst_var, index_var;
1640 guint32 label2, label3;
1641
1642 array_var = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
1643 src_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
1644 dst_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
1645
1646 /* set array_var */
1647 mono_mb_emit_ldloc (mb, 1);
1648 mono_mb_emit_byte (mb, CEE_LDIND_REF);
1649 mono_mb_emit_stloc (mb, array_var);
1650
1651 /* save the old src pointer */
1652 mono_mb_emit_ldloc (mb, 0);
1653 mono_mb_emit_stloc (mb, src_var);
1654 /* save the old dst pointer */
1655 mono_mb_emit_ldloc (mb, 1);
1656 mono_mb_emit_stloc (mb, dst_var);
1657
1658 /* Emit marshalling loop */
1659 index_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
1660 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
1661 mono_mb_emit_stloc (mb, index_var);
1662
1663 /* Loop header */
1664 label2 = mb->pos;
1665 mono_mb_emit_ldloc (mb, index_var);
1666 mono_mb_emit_ldloc (mb, array_var);
1667 mono_mb_emit_byte (mb, CEE_LDLEN);
1668 label3 = mono_mb_emit_branch (mb, CEE_BGE);
1669
1670 /* src is already set */
1671
1672 /* Set dst */
1673 mono_mb_emit_ldloc (mb, array_var);
1674 mono_mb_emit_ldloc (mb, index_var);
1675 mono_mb_emit_op (mb, CEE_LDELEMA, eklass);
1676 mono_mb_emit_stloc (mb, 1);
1677
1678 /* Do the conversion */
1679 emit_struct_conv (mb, eklass, TRUE);
1680
1681 /* Loop footer */
1682 mono_mb_emit_add_to_local (mb, index_var, 1);
1683
1684 mono_mb_emit_byte (mb, CEE_BR);
1685 mono_mb_emit_i4 (mb, label2 - (mb->pos + 4));
1686
1687 mono_mb_patch_branch (mb, label3);
1688
1689 /* restore the old src pointer */
1690 mono_mb_emit_ldloc (mb, src_var);
1691 mono_mb_emit_stloc (mb, 0);
1692 /* restore the old dst pointer */
1693 mono_mb_emit_ldloc (mb, dst_var);
1694 mono_mb_emit_stloc (mb, 1);
1695 }
1696 break;
1697 }
1698 case MONO_MARSHAL_CONV_ARRAY_BYVALCHARARRAY: {
1699 MonoClass *eclass = mono_defaults.char_class;
1700
1701 /* create a new array */
1702 mono_mb_emit_ldloc (mb, 1);
1703 mono_mb_emit_icon (mb, mspec->data.array_data.num_elem);
1704 mono_mb_emit_op (mb, CEE_NEWARR, eclass);
1705 mono_mb_emit_byte (mb, CEE_STIND_REF);
1706
1707 mono_mb_emit_ldloc (mb, 1);
1708 mono_mb_emit_byte (mb, CEE_LDIND_REF);
1709 mono_mb_emit_ldloc (mb, 0);
1710 mono_mb_emit_ptr (mb, mono_defaults.byte_class);
1711 mono_mb_emit_icon (mb, mspec->data.array_data.num_elem);
1712 mono_mb_emit_icall (mb, mono_byvalarray_to_array);
1713 break;
1714 }
1715 case MONO_MARSHAL_CONV_STR_BYVALSTR:
1716 mono_mb_emit_ldloc (mb, 1);
1717 mono_mb_emit_ldloc (mb, 0);
1718 mono_mb_emit_icall (mb, mono_string_new_wrapper);
1719 mono_mb_emit_byte (mb, CEE_STIND_REF);
1720 break;
1721 case MONO_MARSHAL_CONV_STR_BYVALWSTR:
1722 mono_mb_emit_ldloc (mb, 1);
1723 mono_mb_emit_ldloc (mb, 0);
1724 mono_mb_emit_icall (mb, mono_string_from_utf16);
1725 mono_mb_emit_byte (mb, CEE_STIND_REF);
1726 break;
1727 case MONO_MARSHAL_CONV_STR_LPTSTR:
1728 case MONO_MARSHAL_CONV_STR_LPSTR:
1729 mono_mb_emit_ldloc (mb, 1);
1730 mono_mb_emit_ldloc (mb, 0);
1731 mono_mb_emit_byte (mb, CEE_LDIND_I);
1732 mono_mb_emit_icall (mb, mono_string_new_wrapper);
1733 mono_mb_emit_byte (mb, CEE_STIND_REF);
1734 break;
1735 case MONO_MARSHAL_CONV_STR_LPWSTR:
1736 mono_mb_emit_ldloc (mb, 1);
1737 mono_mb_emit_ldloc (mb, 0);
1738 mono_mb_emit_byte (mb, CEE_LDIND_I);
1739 mono_mb_emit_icall (mb, mono_string_from_utf16);
1740 mono_mb_emit_byte (mb, CEE_STIND_REF);
1741 break;
1742 case MONO_MARSHAL_CONV_OBJECT_STRUCT: {
1743 MonoClass *klass = mono_class_from_mono_type (type);
1744 int src_var, dst_var;
1745
1746 src_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
1747 dst_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
1748
1749 /* *dst = new object */
1750 mono_mb_emit_ldloc (mb, 1);
1751 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
1752 mono_mb_emit_op (mb, CEE_MONO_NEWOBJ, klass);
1753 mono_mb_emit_byte (mb, CEE_STIND_REF);
1754
1755 /* save the old src pointer */
1756 mono_mb_emit_ldloc (mb, 0);
1757 mono_mb_emit_stloc (mb, src_var);
1758 /* save the old dst pointer */
1759 mono_mb_emit_ldloc (mb, 1);
1760 mono_mb_emit_stloc (mb, dst_var);
1761
1762 /* dst = pointer to newly created object data */
1763 mono_mb_emit_ldloc (mb, 1);
1764 mono_mb_emit_byte (mb, CEE_LDIND_I);
1765 mono_mb_emit_icon (mb, sizeof (MonoObject));
1766 mono_mb_emit_byte (mb, CEE_ADD);
1767 mono_mb_emit_stloc (mb, 1);
1768
1769 emit_struct_conv (mb, klass, TRUE);
1770
1771 /* restore the old src pointer */
1772 mono_mb_emit_ldloc (mb, src_var);
1773 mono_mb_emit_stloc (mb, 0);
1774 /* restore the old dst pointer */
1775 mono_mb_emit_ldloc (mb, dst_var);
1776 mono_mb_emit_stloc (mb, 1);
1777 break;
1778 }
1779 case MONO_MARSHAL_CONV_DEL_FTN: {
1780 MonoClass *klass = mono_class_from_mono_type (type);
1781
1782 mono_mb_emit_ldloc (mb, 1);
1783 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
1784 mono_mb_emit_op (mb, CEE_MONO_CLASSCONST, klass);
1785 mono_mb_emit_ldloc (mb, 0);
1786 mono_mb_emit_byte (mb, CEE_LDIND_I);
1787 mono_mb_emit_icall (mb, mono_ftnptr_to_delegate);
1788 mono_mb_emit_byte (mb, CEE_STIND_REF);
1789 break;
1790 }
1791 case MONO_MARSHAL_CONV_ARRAY_LPARRAY:
1792 g_error ("Structure field of type %s can't be marshalled as LPArray", mono_class_from_mono_type (type)->name);
1793 break;
1794 case MONO_MARSHAL_CONV_OBJECT_INTERFACE:
1795 case MONO_MARSHAL_CONV_OBJECT_IUNKNOWN:
1796 case MONO_MARSHAL_CONV_OBJECT_IDISPATCH: {
1797 static MonoClass* com_interop_proxy_class = NULL;
1798 static MonoMethod* com_interop_proxy_get_proxy = NULL;
1799 static MonoMethod* get_transparent_proxy = NULL;
1800 int real_proxy;
1801 guint32 pos_failed = 0;
1802 MonoClass *klass = mono_class_from_mono_type (type);
1803
1804 mono_mb_emit_ldloc (mb, 1);
1805 mono_mb_emit_byte (mb, CEE_LDNULL);
1806 mono_mb_emit_byte (mb, CEE_STIND_REF);
1807
1808 mono_mb_emit_ldloc (mb, 0);
1809 mono_mb_emit_byte (mb, CEE_LDIND_I);
1810 pos_failed = mono_mb_emit_short_branch (mb, CEE_BRFALSE_S);
1811
1812 if (!com_interop_proxy_class)
1813 com_interop_proxy_class = mono_class_from_name (mono_defaults.corlib, "Mono.Interop", "ComInteropProxy");
1814 if (!com_interop_proxy_get_proxy)
1815 com_interop_proxy_get_proxy = mono_class_get_method_from_name_flags (com_interop_proxy_class, "GetProxy", 2, METHOD_ATTRIBUTE_PRIVATE);
1816 if (!get_transparent_proxy)
1817 get_transparent_proxy = mono_class_get_method_from_name (mono_defaults.real_proxy_class, "GetTransparentProxy", 0);
1818
1819 real_proxy = mono_mb_add_local (mb, &com_interop_proxy_class->byval_arg);
1820
1821 mono_mb_emit_ldloc (mb, 0);
1822 mono_mb_emit_byte (mb, CEE_LDIND_I);
1823 mono_mb_emit_ptr (mb, &mono_defaults.com_object_class->byval_arg);
1824 mono_mb_emit_icall (mb, type_from_handle);
1825 mono_mb_emit_managed_call (mb, com_interop_proxy_get_proxy, NULL);
1826 mono_mb_emit_stloc (mb, real_proxy);
1827
1828
1829 mono_mb_emit_ldloc (mb, 1);
1830 mono_mb_emit_ldloc (mb, real_proxy);
1831 mono_mb_emit_managed_call (mb, get_transparent_proxy, NULL);
1832 if (klass && klass != mono_defaults.object_class)
1833 mono_mb_emit_op (mb, CEE_CASTCLASS, klass);
1834 mono_mb_emit_byte (mb, CEE_STIND_REF);
1835
1836 // case if null
1837 mono_mb_patch_short_branch (mb, pos_failed);
1838 break;
1839 }
1840 case MONO_MARSHAL_CONV_STR_BSTR:
1841 case MONO_MARSHAL_CONV_STR_ANSIBSTR:
1842 case MONO_MARSHAL_CONV_STR_TBSTR:
1843 case MONO_MARSHAL_CONV_ARRAY_SAVEARRAY:
1844 default:
1845 g_warning ("marshaling conversion %d not implemented", conv);
1846 g_assert_not_reached ();
1847 }
1848 }
1849
1850 static gpointer
1851 conv_to_icall (MonoMarshalConv conv)
1852 {
1853 switch (conv) {
1854 case MONO_MARSHAL_CONV_STR_LPWSTR:
1855 return mono_marshal_string_to_utf16;
1856 case MONO_MARSHAL_CONV_LPWSTR_STR:
1857 return mono_string_from_utf16;
1858 case MONO_MARSHAL_CONV_LPSTR_STR:
1859 return mono_string_new_wrapper;
1860 case MONO_MARSHAL_CONV_STR_LPTSTR:
1861 case MONO_MARSHAL_CONV_STR_LPSTR:
1862 return mono_string_to_lpstr;
1863 case MONO_MARSHAL_CONV_STR_BSTR:
1864 return mono_string_to_bstr;
1865 case MONO_MARSHAL_CONV_BSTR_STR:
1866 return mono_string_from_bstr;
1867 case MONO_MARSHAL_CONV_STR_TBSTR:
1868 case MONO_MARSHAL_CONV_STR_ANSIBSTR:
1869 return mono_string_to_ansibstr;
1870 case MONO_MARSHAL_CONV_SB_LPSTR:
1871 case MONO_MARSHAL_CONV_SB_LPTSTR:
1872 return mono_string_builder_to_utf8;
1873 case MONO_MARSHAL_CONV_SB_LPWSTR:
1874 return mono_string_builder_to_utf16;
1875 case MONO_MARSHAL_CONV_ARRAY_SAVEARRAY:
1876 return mono_array_to_savearray;
1877 case MONO_MARSHAL_CONV_ARRAY_LPARRAY:
1878 return mono_array_to_lparray;
1879 case MONO_MARSHAL_CONV_DEL_FTN:
1880 return mono_delegate_to_ftnptr;
1881 case MONO_MARSHAL_CONV_FTN_DEL:
1882 return mono_ftnptr_to_delegate;
1883 case MONO_MARSHAL_CONV_LPSTR_SB:
1884 case MONO_MARSHAL_CONV_LPTSTR_SB:
1885 return mono_string_utf8_to_builder;
1886 case MONO_MARSHAL_CONV_LPWSTR_SB:
1887 return mono_string_utf16_to_builder;
1888 case MONO_MARSHAL_FREE_ARRAY:
1889 return mono_marshal_free_array;
1890 case MONO_MARSHAL_CONV_STR_BYVALSTR:
1891 return mono_string_to_byvalstr;
1892 case MONO_MARSHAL_CONV_STR_BYVALWSTR:
1893 return mono_string_to_byvalwstr;
1894 default:
1895 g_assert_not_reached ();
1896 }
1897
1898 return NULL;
1899 }
1900
1901 static void
1902 emit_object_to_ptr_conv (MonoMethodBuilder *mb, MonoType *type, MonoMarshalConv conv, MonoMarshalSpec *mspec)
1903 {
1904 int pos;
1905
1906 switch (conv) {
1907 case MONO_MARSHAL_CONV_BOOL_I4:
1908 mono_mb_emit_ldloc (mb, 1);
1909 mono_mb_emit_ldloc (mb, 0);
1910 mono_mb_emit_byte (mb, CEE_LDIND_U1);
1911 mono_mb_emit_byte (mb, CEE_STIND_I4);
1912 break;
1913 case MONO_MARSHAL_CONV_BOOL_VARIANTBOOL:
1914 mono_mb_emit_ldloc (mb, 1);
1915 mono_mb_emit_ldloc (mb, 0);
1916 mono_mb_emit_byte (mb, CEE_LDIND_U1);
1917 mono_mb_emit_byte (mb, CEE_NEG);
1918 mono_mb_emit_byte (mb, CEE_STIND_I2);
1919 break;
1920 case MONO_MARSHAL_CONV_STR_LPWSTR:
1921 case MONO_MARSHAL_CONV_STR_LPSTR:
1922 case MONO_MARSHAL_CONV_STR_LPTSTR:
1923 case MONO_MARSHAL_CONV_STR_BSTR:
1924 case MONO_MARSHAL_CONV_STR_ANSIBSTR:
1925 case MONO_MARSHAL_CONV_STR_TBSTR: {
1926 int pos;
1927
1928 /* free space if free == true */
1929 mono_mb_emit_ldloc (mb, 2);
1930 pos = mono_mb_emit_short_branch (mb, CEE_BRFALSE_S);
1931 mono_mb_emit_ldloc (mb, 1);
1932 mono_mb_emit_byte (mb, CEE_LDIND_I);
1933 mono_mb_emit_icall (mb, g_free);
1934 mono_mb_patch_short_branch (mb, pos);
1935
1936 mono_mb_emit_ldloc (mb, 1);
1937 mono_mb_emit_ldloc (mb, 0);
1938 mono_mb_emit_byte (mb, CEE_LDIND_REF);
1939 mono_mb_emit_icall (mb, conv_to_icall (conv));
1940 mono_mb_emit_byte (mb, CEE_STIND_I);
1941 break;
1942 }
1943 case MONO_MARSHAL_CONV_ARRAY_SAVEARRAY:
1944 case MONO_MARSHAL_CONV_ARRAY_LPARRAY:
1945 case MONO_MARSHAL_CONV_DEL_FTN:
1946 mono_mb_emit_ldloc (mb, 1);
1947 mono_mb_emit_ldloc (mb, 0);
1948 mono_mb_emit_byte (mb, CEE_LDIND_REF);
1949 mono_mb_emit_icall (mb, conv_to_icall (conv));
1950 mono_mb_emit_byte (mb, CEE_STIND_I);
1951 break;
1952 case MONO_MARSHAL_CONV_STR_BYVALSTR:
1953 case MONO_MARSHAL_CONV_STR_BYVALWSTR: {
1954 g_assert (mspec);
1955
1956 mono_mb_emit_ldloc (mb, 1); /* dst */
1957 mono_mb_emit_ldloc (mb, 0);
1958 mono_mb_emit_byte (mb, CEE_LDIND_REF); /* src String */
1959 mono_mb_emit_icon (mb, mspec->data.array_data.num_elem);
1960 mono_mb_emit_icall (mb, conv_to_icall (conv));
1961 break;
1962 }
1963 case MONO_MARSHAL_CONV_ARRAY_BYVALARRAY: {
1964 MonoClass *eklass = NULL;
1965 int esize;
1966
1967 if (type->type == MONO_TYPE_SZARRAY) {
1968 eklass = type->data.klass;
1969 } else {
1970 g_assert_not_reached ();
1971 }
1972
1973 if (eklass->valuetype)
1974 esize = mono_class_native_size (eklass, NULL);
1975 else
1976 esize = sizeof (gpointer);
1977
1978 mono_mb_emit_ldloc (mb, 0);
1979 mono_mb_emit_byte (mb, CEE_LDIND_REF);
1980 pos = mono_mb_emit_branch (mb, CEE_BRFALSE);
1981
1982 if (eklass->blittable) {
1983 mono_mb_emit_ldloc (mb, 1);
1984 mono_mb_emit_ldloc (mb, 0);
1985 mono_mb_emit_byte (mb, CEE_LDIND_REF);
1986 mono_mb_emit_ldflda (mb, G_STRUCT_OFFSET (MonoArray, vector));
1987 mono_mb_emit_icon (mb, mspec->data.array_data.num_elem * esize);
1988 mono_mb_emit_byte (mb, CEE_PREFIX1);
1989 mono_mb_emit_byte (mb, CEE_CPBLK);
1990 } else {
1991 int array_var, src_var, dst_var, index_var;
1992 guint32 label2, label3;
1993
1994 array_var = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
1995 src_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
1996 dst_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
1997
1998 /* set array_var */
1999 mono_mb_emit_ldloc (mb, 0);
2000 mono_mb_emit_byte (mb, CEE_LDIND_REF);
2001 mono_mb_emit_stloc (mb, array_var);
2002
2003 /* save the old src pointer */
2004 mono_mb_emit_ldloc (mb, 0);
2005 mono_mb_emit_stloc (mb, src_var);
2006 /* save the old dst pointer */
2007 mono_mb_emit_ldloc (mb, 1);
2008 mono_mb_emit_stloc (mb, dst_var);
2009
2010 /* Emit marshalling loop */
2011 index_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
2012 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
2013 mono_mb_emit_stloc (mb, index_var);
2014
2015 /* Loop header */
2016 label2 = mb->pos;
2017 mono_mb_emit_ldloc (mb, index_var);
2018 mono_mb_emit_ldloc (mb, array_var);
2019 mono_mb_emit_byte (mb, CEE_LDLEN);
2020 label3 = mono_mb_emit_branch (mb, CEE_BGE);
2021
2022 /* Set src */
2023 mono_mb_emit_ldloc (mb, array_var);
2024 mono_mb_emit_ldloc (mb, index_var);
2025 mono_mb_emit_op (mb, CEE_LDELEMA, eklass);
2026 mono_mb_emit_stloc (mb, 0);
2027
2028 /* dst is already set */
2029
2030 /* Do the conversion */
2031 emit_struct_conv (mb, eklass, FALSE);
2032
2033 /* Loop footer */
2034 mono_mb_emit_add_to_local (mb, index_var, 1);
2035
2036 mono_mb_emit_byte (mb, CEE_BR);
2037 mono_mb_emit_i4 (mb, label2 - (mb->pos + 4));
2038
2039 mono_mb_patch_branch (mb, label3);
2040
2041 /* restore the old src pointer */
2042 mono_mb_emit_ldloc (mb, src_var);
2043 mono_mb_emit_stloc (mb, 0);
2044 /* restore the old dst pointer */
2045 mono_mb_emit_ldloc (mb, dst_var);
2046 mono_mb_emit_stloc (mb, 1);
2047 }
2048
2049 mono_mb_patch_branch (mb, pos);
2050 break;
2051 }
2052 case MONO_MARSHAL_CONV_ARRAY_BYVALCHARARRAY: {
2053 mono_mb_emit_ldloc (mb, 0);
2054 mono_mb_emit_byte (mb, CEE_LDIND_REF);
2055 pos = mono_mb_emit_short_branch (mb, CEE_BRFALSE_S);
2056
2057 mono_mb_emit_ldloc (mb, 1);
2058 mono_mb_emit_ldloc (mb, 0);
2059 mono_mb_emit_byte (mb, CEE_LDIND_REF);
2060 mono_mb_emit_ptr (mb, mono_defaults.byte_class);
2061 mono_mb_emit_icon (mb, mspec->data.array_data.num_elem);
2062 mono_mb_emit_icall (mb, mono_array_to_byvalarray);
2063 mono_mb_patch_short_branch (mb, pos);
2064 break;
2065 }
2066 case MONO_MARSHAL_CONV_OBJECT_STRUCT: {
2067 int src_var, dst_var;
2068
2069 src_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
2070 dst_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
2071
2072 mono_mb_emit_ldloc (mb, 0);
2073 mono_mb_emit_byte (mb, CEE_LDIND_I);
2074 pos = mono_mb_emit_branch (mb, CEE_BRFALSE);
2075
2076 /* save the old src pointer */
2077 mono_mb_emit_ldloc (mb, 0);
2078 mono_mb_emit_stloc (mb, src_var);
2079 /* save the old dst pointer */
2080 mono_mb_emit_ldloc (mb, 1);
2081 mono_mb_emit_stloc (mb, dst_var);
2082
2083 /* src = pointer to object data */
2084 mono_mb_emit_ldloc (mb, 0);
2085 mono_mb_emit_byte (mb, CEE_LDIND_I);
2086 mono_mb_emit_icon (mb, sizeof (MonoObject));
2087 mono_mb_emit_byte (mb, CEE_ADD);
2088 mono_mb_emit_stloc (mb, 0);
2089
2090 emit_struct_conv (mb, mono_class_from_mono_type (type), FALSE);
2091
2092 /* restore the old src pointer */
2093 mono_mb_emit_ldloc (mb, src_var);
2094 mono_mb_emit_stloc (mb, 0);
2095 /* restore the old dst pointer */
2096 mono_mb_emit_ldloc (mb, dst_var);
2097 mono_mb_emit_stloc (mb, 1);
2098
2099 mono_mb_patch_branch (mb, pos);
2100 break;
2101 }
2102 case MONO_MARSHAL_CONV_OBJECT_INTERFACE:
2103 case MONO_MARSHAL_CONV_OBJECT_IDISPATCH:
2104 case MONO_MARSHAL_CONV_OBJECT_IUNKNOWN: {
2105 guint32 pos_failed = 0, pos_rcw = 0;
2106 char * msg;
2107
2108 mono_mb_emit_ldloc (mb, 1);
2109 //mono_mb_emit_ldloc (mb, 0);
2110 mono_mb_emit_ptr (mb, 0);
2111 //mono_mb_emit_byte (mb, CEE_LDIND_U1);
2112 mono_mb_emit_byte (mb, CEE_STIND_I);
2113
2114 mono_mb_emit_ldloc (mb, 0);
2115 mono_mb_emit_byte (mb, CEE_LDIND_REF);
2116
2117 // if null just break, dst was already inited to 0
2118 pos_failed = mono_mb_emit_short_branch (mb, CEE_BRFALSE_S);
2119
2120 mono_mb_emit_ldloc (mb, 0);
2121 mono_mb_emit_byte (mb, CEE_LDIND_REF);
2122 mono_mb_emit_icall (mb, cominterop_object_is_rcw);
2123 pos_rcw = mono_mb_emit_short_branch (mb, CEE_BRFALSE_S);
2124
2125 // load dst to store later
2126 mono_mb_emit_ldloc (mb, 1);
2127
2128 // load src
2129 mono_mb_emit_ldloc (mb, 0);
2130 mono_mb_emit_byte (mb, CEE_LDIND_REF);
2131 mono_mb_emit_ldflda (mb, G_STRUCT_OFFSET (MonoTransparentProxy, rp));
2132 mono_mb_emit_byte (mb, CEE_LDIND_REF);
2133
2134 /* load the RCW from the ComInteropProxy*/
2135 mono_mb_emit_ldflda (mb, G_STRUCT_OFFSET (MonoComInteropProxy, com_object));
2136 mono_mb_emit_byte (mb, CEE_LDIND_REF);
2137
2138 if (conv == MONO_MARSHAL_CONV_OBJECT_INTERFACE) {
2139 static MonoMethod* GetInterface = NULL;
2140
2141 if (!GetInterface)
2142 GetInterface = mono_class_get_method_from_name (mono_defaults.com_object_class, "GetInterface", 1);
2143 mono_mb_emit_ptr (mb, type);
2144 mono_mb_emit_icall (mb, type_from_handle);
2145 mono_mb_emit_managed_call (mb, GetInterface, NULL);
2146 }
2147 else if (conv == MONO_MARSHAL_CONV_OBJECT_IUNKNOWN) {
2148 static MonoProperty* iunknown = NULL;
2149
2150 if (!iunknown)
2151 iunknown = mono_class_get_property_from_name (mono_defaults.com_object_class, "IUnknown");
2152 mono_mb_emit_managed_call (mb, iunknown->get, NULL);
2153 }
2154 else if (conv == MONO_MARSHAL_CONV_OBJECT_IDISPATCH) {
2155 static MonoProperty* idispatch = NULL;
2156
2157 if (!idispatch)
2158 idispatch = mono_class_get_property_from_name (mono_defaults.com_object_class, "IDispatch");
2159 mono_mb_emit_managed_call (mb, idispatch->get, NULL);
2160 }
2161 else {
2162 }
2163 mono_mb_emit_byte (mb, CEE_STIND_I);
2164
2165 // if not rcw
2166 mono_mb_patch_short_branch (mb, pos_rcw);
2167 msg = g_strdup ("Marshalling of COM Callable Wrappers is not yet implemented.");
2168 mono_mb_emit_exception_marshal_directive (mb, msg);
2169
2170 // case if null
2171 mono_mb_patch_short_branch (mb, pos_failed);
2172 break;
2173 }
2174 default: {
2175 char *msg = g_strdup_printf ("marshalling conversion %d not implemented", conv);
2176 MonoException *exc = mono_get_exception_not_implemented (msg);
2177 g_warning (msg);
2178 g_free (msg);
2179 mono_raise_exception (exc);
2180 }
2181 }
2182 }
2183
2184 static void
2185 emit_struct_conv (MonoMethodBuilder *mb, MonoClass *klass, gboolean to_object)
2186 {
2187 MonoMarshalType *info;
2188 int i;
2189
2190 if (klass->parent)
2191 emit_struct_conv(mb, klass->parent, to_object);
2192
2193 info = mono_marshal_load_type_info (klass);
2194
2195 if (info->native_size == 0)
2196 return;
2197
2198 if (klass->blittable) {
2199 int msize = mono_class_value_size (klass, NULL);
2200 g_assert (msize == info->native_size);
2201 mono_mb_emit_ldloc (mb, 1);
2202 mono_mb_emit_ldloc (mb, 0);
2203 mono_mb_emit_icon (mb, msize);
2204 mono_mb_emit_byte (mb, CEE_PREFIX1);
2205 mono_mb_emit_byte (mb, CEE_CPBLK);
2206
2207 mono_mb_emit_add_to_local (mb, 0, msize);
2208 mono_mb_emit_add_to_local (mb, 1, msize);
2209 return;
2210 }
2211
2212 for (i = 0; i < info->num_fields; i++) {
2213 MonoMarshalNative ntype;
2214 MonoMarshalConv conv;
2215 MonoType *ftype = info->fields [i].field->type;
2216 int msize = 0;
2217 int usize = 0;
2218 gboolean last_field = i < (info->num_fields -1) ? 0 : 1;
2219
2220 if (ftype->attrs & FIELD_ATTRIBUTE_STATIC)
2221 continue;
2222
2223 ntype = mono_type_to_unmanaged (ftype, info->fields [i].mspec, TRUE, klass->unicode, &conv);
2224
2225 if (last_field) {
2226 msize = klass->instance_size - info->fields [i].field->offset;
2227 usize = info->native_size - info->fields [i].offset;
2228 } else {
2229 msize = info->fields [i + 1].field->offset - info->fields [i].field->offset;
2230 usize = info->fields [i + 1].offset - info->fields [i].offset;
2231 }
2232
2233 /*
2234 * FIXME: Should really check for usize==0 and msize>0, but we apply
2235 * the layout to the managed structure as well.
2236 */
2237 if (((klass->flags & TYPE_ATTRIBUTE_LAYOUT_MASK) == TYPE_ATTRIBUTE_EXPLICIT_LAYOUT) && (usize == 0)) {
2238 if (MONO_TYPE_IS_REFERENCE (info->fields [i].field->type) || ((!last_field && MONO_TYPE_IS_REFERENCE (info->fields [i + 1].field->type))))
2239 g_error ("Type %s which has an [ExplicitLayout] attribute cannot have a reference field at the same offset as another field.", mono_type_full_name (&klass->byval_arg));
2240 }
2241
2242 if ((klass->flags & TYPE_ATTRIBUTE_LAYOUT_MASK) == TYPE_ATTRIBUTE_AUTO_LAYOUT)
2243 g_error ("Type %s which is passed to unmanaged code must have a StructLayout attribute", mono_type_full_name (&klass->byval_arg));
2244
2245 switch (conv) {
2246 case MONO_MARSHAL_CONV_NONE: {
2247 int t;
2248
2249 if (ftype->byref || ftype->type == MONO_TYPE_I ||
2250 ftype->type == MONO_TYPE_U) {
2251 mono_mb_emit_ldloc (mb, 1);
2252 mono_mb_emit_ldloc (mb, 0);
2253 mono_mb_emit_byte (mb, CEE_LDIND_I);
2254 mono_mb_emit_byte (mb, CEE_STIND_I);
2255 break;
2256 }
2257
2258 handle_enum:
2259 t = ftype->type;
2260 switch (t) {
2261 case MONO_TYPE_I4:
2262 case MONO_TYPE_U4:
2263 case MONO_TYPE_I1:
2264 case MONO_TYPE_U1:
2265 case MONO_TYPE_BOOLEAN:
2266 case MONO_TYPE_I2:
2267 case MONO_TYPE_U2:
2268 case MONO_TYPE_CHAR:
2269 case MONO_TYPE_I8:
2270 case MONO_TYPE_U8:
2271 case MONO_TYPE_PTR:
2272 case MONO_TYPE_R4:
2273 case MONO_TYPE_R8:
2274 mono_mb_emit_ldloc (mb, 1);
2275 mono_mb_emit_ldloc (mb, 0);
2276 mono_mb_emit_byte (mb, mono_type_to_ldind (ftype));
2277 mono_mb_emit_byte (mb, mono_type_to_stind (ftype));
2278 break;
2279 case MONO_TYPE_VALUETYPE: {
2280 int src_var, dst_var;
2281
2282 if (ftype->data.klass->enumtype) {
2283 ftype = ftype->data.klass->enum_basetype;
2284 goto handle_enum;
2285 }
2286
2287 src_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
2288 dst_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
2289
2290 /* save the old src pointer */
2291 mono_mb_emit_ldloc (mb, 0);
2292 mono_mb_emit_stloc (mb, src_var);
2293 /* save the old dst pointer */
2294 mono_mb_emit_ldloc (mb, 1);
2295 mono_mb_emit_stloc (mb, dst_var);
2296
2297 emit_struct_conv (mb, ftype->data.klass, to_object);
2298
2299 /* restore the old src pointer */
2300 mono_mb_emit_ldloc (mb, src_var);
2301 mono_mb_emit_stloc (mb, 0);
2302 /* restore the old dst pointer */
2303 mono_mb_emit_ldloc (mb, dst_var);
2304 mono_mb_emit_stloc (mb, 1);
2305 break;
2306 }
2307 case MONO_TYPE_OBJECT: {
2308 if (to_object) {
2309 static MonoMethod *variant_clear = NULL;
2310 static MonoMethod *get_object_for_native_variant = NULL;
2311 if (!variant_clear)
2312 variant_clear = mono_class_get_method_from_name (mono_defaults.variant_class, "Clear", 0);
2313 if (!get_object_for_native_variant)
2314 get_object_for_native_variant = mono_class_get_method_from_name (mono_defaults.marshal_class, "GetObjectForNativeVariant", 1);
2315 mono_mb_emit_ldloc (mb, 1);
2316 mono_mb_emit_ldloc (mb, 0);
2317 mono_mb_emit_managed_call (mb, get_object_for_native_variant, NULL);
2318 mono_mb_emit_byte (mb, CEE_STIND_REF);
2319
2320 mono_mb_emit_ldloc (mb, 0);
2321 mono_mb_emit_managed_call (mb, variant_clear, NULL);
2322 }
2323 else {
2324 static MonoMethod *get_native_variant_for_object = NULL;
2325 if (!get_native_variant_for_object)
2326 get_native_variant_for_object = mono_class_get_method_from_name (mono_defaults.marshal_class, "GetNativeVariantForObject", 2);
2327
2328 mono_mb_emit_ldloc (mb, 0);
2329 mono_mb_emit_byte(mb, CEE_LDIND_REF);
2330 mono_mb_emit_ldloc (mb, 1);
2331 mono_mb_emit_managed_call (mb, get_native_variant_for_object, NULL);
2332 }
2333 break;
2334 }
2335
2336 default:
2337 g_warning ("marshaling type %02x not implemented", ftype->type);
2338 g_assert_not_reached ();
2339 }
2340 break;
2341 }
2342 default: {
2343 int src_var, dst_var;
2344
2345 src_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
2346 dst_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
2347
2348 /* save the old src pointer */
2349 mono_mb_emit_ldloc (mb, 0);
2350 mono_mb_emit_stloc (mb, src_var);
2351 /* save the old dst pointer */
2352 mono_mb_emit_ldloc (mb, 1);
2353 mono_mb_emit_stloc (mb, dst_var);
2354
2355 if (to_object)
2356 emit_ptr_to_object_conv (mb, ftype, conv, info->fields [i].mspec);
2357 else
2358 emit_object_to_ptr_conv (mb, ftype, conv, info->fields [i].mspec);
2359
2360 /* restore the old src pointer */
2361 mono_mb_emit_ldloc (mb, src_var);
2362 mono_mb_emit_stloc (mb, 0);
2363 /* restore the old dst pointer */
2364 mono_mb_emit_ldloc (mb, dst_var);
2365 mono_mb_emit_stloc (mb, 1);
2366 }
2367 }
2368
2369 if (to_object) {
2370 mono_mb_emit_add_to_local (mb, 0, usize);
2371 mono_mb_emit_add_to_local (mb, 1, msize);
2372 } else {
2373 mono_mb_emit_add_to_local (mb, 0, msize);
2374 mono_mb_emit_add_to_local (mb, 1, usize);
2375 }
2376 }
2377 }
2378
2379 static void
2380 emit_struct_free (MonoMethodBuilder *mb, MonoClass *klass, int struct_var)
2381 {
2382 /* Call DestroyStructure */
2383 /* FIXME: Only do this if needed */
2384 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
2385 mono_mb_emit_op (mb, CEE_MONO_CLASSCONST, klass);
2386 mono_mb_emit_ldloc (mb, struct_var);
2387 mono_mb_emit_icall (mb, mono_struct_delete_old);
2388 }
2389
2390 static void
2391 emit_thread_interrupt_checkpoint_call (MonoMethodBuilder *mb, gpointer checkpoint_func)
2392 {
2393 int pos_noabort;
2394
2395 mono_mb_emit_ptr (mb, (gpointer) mono_thread_interruption_request_flag ());
2396 mono_mb_emit_byte (mb, CEE_LDIND_U4);
2397 pos_noabort = mono_mb_emit_branch (mb, CEE_BRFALSE);
2398
2399 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
2400 mono_mb_emit_byte (mb, CEE_MONO_NOT_TAKEN);
2401
2402 mono_mb_emit_icall (mb, checkpoint_func);
2403
2404 mono_mb_patch_addr (mb, pos_noabort, mb->pos - (pos_noabort + 4));
2405 }
2406
2407 static void
2408 emit_thread_interrupt_checkpoint (MonoMethodBuilder *mb)
2409 {
2410 if (strstr (mb->name, "mono_thread_interruption_checkpoint"))
2411 return;
2412
2413 emit_thread_interrupt_checkpoint_call (mb, mono_thread_interruption_checkpoint);
2414 }
2415
2416 static void
2417 emit_thread_force_interrupt_checkpoint (MonoMethodBuilder *mb)
2418 {
2419 emit_thread_interrupt_checkpoint_call (mb, mono_thread_force_interruption_checkpoint);
2420 }
2421
2422 static MonoAsyncResult *
2423 mono_delegate_begin_invoke (MonoDelegate *delegate, gpointer *params)
2424 {
2425 MonoMethodMessage *msg;
2426 MonoDelegate *async_callback;
2427 MonoObject *state;
2428 MonoMethod *im;
2429 MonoClass *klass;
2430 MonoMethod *method = NULL, *method2 = NULL;
2431
2432 g_assert (delegate);
2433
2434 if (delegate->target && mono_object_class (delegate->target) == mono_defaults.transparent_proxy_class) {
2435
2436 MonoTransparentProxy* tp = (MonoTransparentProxy *)delegate->target;
2437 if (!tp->remote_class->proxy_class->contextbound || tp->rp->context != (MonoObject *) mono_context_get ()) {
2438
2439 /* If the target is a proxy, make a direct call. Is proxy's work
2440 // to make the call asynchronous.
2441 */
2442 MonoAsyncResult *ares;
2443 MonoObject *exc;
2444 MonoArray *out_args;
2445 HANDLE handle;
2446 method = delegate->method_info->method;
2447
2448 msg = mono_method_call_message_new (mono_marshal_method_from_wrapper (method), params, NULL, &async_callback, &state);
2449 handle = CreateEvent (NULL, TRUE, FALSE, NULL);
2450 g_assert(handle != NULL);
2451 ares = mono_async_result_new (mono_domain_get (), handle, state, handle, NULL);
2452 MONO_OBJECT_SETREF (ares, async_delegate, (MonoObject *)delegate);
2453 MONO_OBJECT_SETREF (ares, async_callback, (MonoObject *)async_callback);
2454 MONO_OBJECT_SETREF (msg, async_result, ares);
2455 msg->call_type = CallType_BeginInvoke;
2456
2457 mono_remoting_invoke ((MonoObject *)tp->rp, msg, &exc, &out_args);
2458 return ares;
2459 }
2460 }
2461
2462 klass = delegate->object.vtable->klass;
2463
2464 method = mono_get_delegate_invoke (klass);
2465 method2 = mono_class_get_method_from_name (klass, "BeginInvoke", -1);
2466 if (method2)
2467 method = method2;
2468 g_assert (method != NULL);
2469
2470 im = mono_get_delegate_invoke (method->klass);
2471 msg = mono_method_call_message_new (method, params, im, &async_callback, &state);
2472
2473 return mono_thread_pool_add ((MonoObject *)delegate, msg, async_callback, state);
2474 }
2475
2476 static int
2477 mono_mb_emit_save_args (MonoMethodBuilder *mb, MonoMethodSignature *sig, gboolean save_this)
2478 {
2479 int i, params_var, tmp_var;
2480
2481 /* allocate local (pointer) *params[] */
2482 params_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
2483 /* allocate local (pointer) tmp */
2484 tmp_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
2485
2486 /* alloate space on stack to store an array of pointers to the arguments */
2487 mono_mb_emit_icon (mb, sizeof (gpointer) * (sig->param_count + 1));
2488 mono_mb_emit_byte (mb, CEE_PREFIX1);
2489 mono_mb_emit_byte (mb, CEE_LOCALLOC);
2490 mono_mb_emit_stloc (mb, params_var);
2491
2492 /* tmp = params */
2493 mono_mb_emit_ldloc (mb, params_var);
2494 mono_mb_emit_stloc (mb, tmp_var);
2495
2496 if (save_this && sig->hasthis) {
2497 mono_mb_emit_ldloc (mb, tmp_var);
2498 mono_mb_emit_ldarg_addr (mb, 0);
2499 mono_mb_emit_byte (mb, CEE_STIND_I);
2500 /* tmp = tmp + sizeof (gpointer) */
2501 if (sig->param_count)
2502 mono_mb_emit_add_to_local (mb, tmp_var, sizeof (gpointer));
2503
2504 }
2505
2506 for (i = 0; i < sig->param_count; i++) {
2507 mono_mb_emit_ldloc (mb, tmp_var);
2508 mono_mb_emit_ldarg_addr (mb, i + sig->hasthis);
2509 mono_mb_emit_byte (mb, CEE_STIND_I);
2510 /* tmp = tmp + sizeof (gpointer) */
2511 if (i < (sig->param_count - 1))
2512 mono_mb_emit_add_to_local (mb, tmp_var, sizeof (gpointer));
2513 }
2514
2515 return params_var;
2516 }
2517
2518 static char*
2519 mono_signature_to_name (MonoMethodSignature *sig, const char *prefix)
2520 {
2521 int i;
2522 char *result;
2523 GString *res = g_string_new ("");
2524
2525 if (prefix) {
2526 g_string_append (res, prefix);
2527 g_string_append_c (res, '_');
2528 }
2529
2530 mono_type_get_desc (res, sig->ret, FALSE);
2531
2532 for (i = 0; i < sig->param_count; ++i) {
2533 g_string_append_c (res, '_');
2534 mono_type_get_desc (res, sig->params [i], FALSE);
2535 }
2536 result = res->str;
2537 g_string_free (res, FALSE);
2538 return result;
2539 }
2540
2541 /**
2542 * mono_marshal_get_string_encoding:
2543 *
2544 * Return the string encoding which should be used for a given parameter.
2545 */
2546 static MonoMarshalNative
2547 mono_marshal_get_string_encoding (MonoMethodPInvoke *piinfo, MonoMarshalSpec *spec)
2548 {
2549 /* First try the parameter marshal info */
2550 if (spec) {
2551 if (spec->native == MONO_NATIVE_LPARRAY) {
2552 if ((spec->data.array_data.elem_type != 0) && (spec->data.array_data.elem_type != MONO_NATIVE_MAX))
2553 return spec->data.array_data.elem_type;
2554 }
2555 else
2556 return spec->native;
2557 }
2558
2559 if (!piinfo)
2560 return MONO_NATIVE_LPSTR;
2561
2562 /* Then try the method level marshal info */
2563 switch (piinfo->piflags & PINVOKE_ATTRIBUTE_CHAR_SET_MASK) {
2564 case PINVOKE_ATTRIBUTE_CHAR_SET_ANSI:
2565 return MONO_NATIVE_LPSTR;
2566 case PINVOKE_ATTRIBUTE_CHAR_SET_UNICODE:
2567 return MONO_NATIVE_LPWSTR;
2568 case PINVOKE_ATTRIBUTE_CHAR_SET_AUTO:
2569 #ifdef PLATFORM_WIN32
2570 return MONO_NATIVE_LPWSTR;
2571 #else
2572 return MONO_NATIVE_LPSTR;
2573 #endif
2574 default:
2575 return MONO_NATIVE_LPSTR;
2576 }
2577 }
2578
2579 static MonoMarshalConv
2580 mono_marshal_get_string_to_ptr_conv (MonoMethodPInvoke *piinfo, MonoMarshalSpec *spec)
2581 {
2582 MonoMarshalNative encoding = mono_marshal_get_string_encoding (piinfo, spec);
2583
2584 switch (encoding) {
2585 case MONO_NATIVE_LPWSTR:
2586 return MONO_MARSHAL_CONV_STR_LPWSTR;
2587 case MONO_NATIVE_LPSTR:
2588 return MONO_MARSHAL_CONV_STR_LPSTR;
2589 case MONO_NATIVE_LPTSTR:
2590 return MONO_MARSHAL_CONV_STR_LPTSTR;
2591 case MONO_NATIVE_BSTR:
2592 return MONO_MARSHAL_CONV_STR_BSTR;
2593 default:
2594 return -1;
2595 }
2596 }
2597
2598 static MonoMarshalConv
2599 mono_marshal_get_stringbuilder_to_ptr_conv (MonoMethodPInvoke *piinfo, MonoMarshalSpec *spec)
2600 {
2601 MonoMarshalNative encoding = mono_marshal_get_string_encoding (piinfo, spec);
2602
2603 switch (encoding) {
2604 case MONO_NATIVE_LPWSTR:
2605 return MONO_MARSHAL_CONV_SB_LPWSTR;
2606 break;
2607 case MONO_NATIVE_LPSTR:
2608 return MONO_MARSHAL_CONV_SB_LPSTR;
2609 break;
2610 case MONO_NATIVE_LPTSTR:
2611 return MONO_MARSHAL_CONV_SB_LPTSTR;
2612 break;
2613 default:
2614 return -1;
2615 }
2616 }
2617
2618 static MonoMarshalConv
2619 mono_marshal_get_ptr_to_string_conv (MonoMethodPInvoke *piinfo, MonoMarshalSpec *spec, gboolean *need_free)
2620 {
2621 MonoMarshalNative encoding = mono_marshal_get_string_encoding (piinfo, spec);
2622
2623 *need_free = TRUE;
2624
2625 switch (encoding) {
2626 case MONO_NATIVE_LPWSTR:
2627 return MONO_MARSHAL_CONV_LPWSTR_STR;
2628 case MONO_NATIVE_LPSTR:
2629 return MONO_MARSHAL_CONV_LPSTR_STR;
2630 case MONO_NATIVE_LPTSTR:
2631 return MONO_MARSHAL_CONV_LPTSTR_STR;
2632 case MONO_NATIVE_BSTR:
2633 return MONO_MARSHAL_CONV_BSTR_STR;
2634 default:
2635 return -1;
2636 }
2637 }
2638
2639 static MonoMarshalConv
2640 mono_marshal_get_ptr_to_stringbuilder_conv (MonoMethodPInvoke *piinfo, MonoMarshalSpec *spec, gboolean *need_free)
2641 {
2642 MonoMarshalNative encoding = mono_marshal_get_string_encoding (piinfo, spec);
2643
2644 *need_free = TRUE;
2645
2646 switch (encoding) {
2647 case MONO_NATIVE_LPWSTR:
2648 /*
2649 * mono_string_builder_to_utf16 does not allocate a
2650 * new buffer, so no need to free it.
2651 */
2652 *need_free = FALSE;
2653 return MONO_MARSHAL_CONV_LPWSTR_SB;
2654 case MONO_NATIVE_LPSTR:
2655 return MONO_MARSHAL_CONV_LPSTR_SB;
2656 break;
2657 case MONO_NATIVE_LPTSTR:
2658 return MONO_MARSHAL_CONV_LPTSTR_SB;
2659 break;
2660 default:
2661 return -1;
2662 }
2663 }
2664
2665 /*
2666 * Return whenever a field of a native structure or an array member needs to
2667 * be freed.
2668 */
2669 static gboolean
2670 mono_marshal_need_free (MonoType *t, MonoMethodPInvoke *piinfo, MonoMarshalSpec *spec)
2671 {
2672 MonoMarshalNative encoding;
2673 MonoMarshalConv conv;
2674
2675 switch (t->type) {
2676 case MONO_TYPE_VALUETYPE:
2677 /* FIXME: Optimize this */
2678 return TRUE;
2679 case MONO_TYPE_OBJECT:
2680 case MONO_TYPE_CLASS:
2681 if (t->data.klass == mono_defaults.stringbuilder_class) {
2682 gboolean need_free;
2683 conv = mono_marshal_get_ptr_to_stringbuilder_conv (piinfo, spec, &need_free);
2684 return need_free;
2685 }
2686 return FALSE;
2687 case MONO_TYPE_STRING:
2688 encoding = mono_marshal_get_string_encoding (piinfo, spec);
2689 return (encoding == MONO_NATIVE_LPWSTR) ? FALSE : TRUE;
2690 default:
2691 return FALSE;
2692 }
2693 }
2694
2695 static inline MonoMethod*
2696 mono_marshal_find_in_cache (GHashTable *cache, gpointer key)
2697 {
2698 MonoMethod *res;
2699
2700 mono_marshal_lock ();
2701 res = g_hash_table_lookup (cache, key);
2702 mono_marshal_unlock ();
2703 return res;
2704 }
2705
2706 /* Create the method from the builder and place it in the cache */
2707 static inline MonoMethod*
2708 mono_mb_create_and_cache (GHashTable *cache, gpointer key,
2709 MonoMethodBuilder *mb, MonoMethodSignature *sig,
2710 int max_stack)
2711 {
2712 MonoMethod *res;
2713
2714 mono_loader_lock ();
2715 mono_marshal_lock ();
2716 res = g_hash_table_lookup (cache, key);
2717 if (!res) {
2718 /* This does not acquire any locks */
2719 res = mono_mb_create_method (mb, sig, max_stack);
2720 g_hash_table_insert (cache, key, res);
2721 g_hash_table_insert (wrapper_hash, res, key);
2722 }
2723 mono_marshal_unlock ();
2724 mono_loader_unlock ();
2725
2726 return res;
2727 }
2728
2729
2730 static inline MonoMethod*
2731 mono_marshal_remoting_find_in_cache (MonoMethod *method, int wrapper_type)
2732 {
2733 MonoMethod *res = NULL;
2734 MonoRemotingMethods *wrps;
2735
2736 mono_marshal_lock ();
2737 wrps = g_hash_table_lookup (method->klass->image->remoting_invoke_cache, method);
2738
2739 if (wrps) {
2740 switch (wrapper_type) {
2741 case MONO_WRAPPER_REMOTING_INVOKE: res = wrps->invoke; break;
2742 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK: res = wrps->invoke_with_check; break;
2743 case MONO_WRAPPER_XDOMAIN_INVOKE: res = wrps->xdomain_invoke; break;
2744 case MONO_WRAPPER_XDOMAIN_DISPATCH: res = wrps->xdomain_dispatch; break;
2745 }
2746 }
2747
2748 mono_marshal_unlock ();
2749 return res;
2750 }
2751
2752 /* Create the method from the builder and place it in the cache */
2753 static inline MonoMethod*
2754 mono_remoting_mb_create_and_cache (MonoMethod *key, MonoMethodBuilder *mb,
2755 MonoMethodSignature *sig, int max_stack)
2756 {
2757 MonoMethod **res = NULL;
2758 MonoRemotingMethods *wrps;
2759 GHashTable *cache = key->klass->image->remoting_invoke_cache;
2760
2761 mono_loader_lock ();
2762 mono_marshal_lock ();
2763 wrps = g_hash_table_lookup (cache, key);
2764 if (!wrps) {
2765 wrps = g_new0 (MonoRemotingMethods, 1);
2766 g_hash_table_insert (cache, key, wrps);
2767 }
2768
2769 switch (mb->method->wrapper_type) {
2770 case MONO_WRAPPER_REMOTING_INVOKE: res = &wrps->invoke; break;
2771 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK: res = &wrps->invoke_with_check; break;
2772 case MONO_WRAPPER_XDOMAIN_INVOKE: res = &wrps->xdomain_invoke; break;
2773 case MONO_WRAPPER_XDOMAIN_DISPATCH: res = &wrps->xdomain_dispatch; break;
2774 default: g_assert_not_reached (); break;
2775 }
2776
2777 if (*res == NULL) {
2778 /* This does not acquire any locks */
2779 *res = mono_mb_create_method (mb, sig, max_stack);
2780 g_hash_table_insert (wrapper_hash, *res, key);
2781 }
2782
2783 mono_marshal_unlock ();
2784 mono_loader_unlock ();
2785
2786 return *res;
2787 }
2788
2789 MonoMethod *
2790 mono_marshal_method_from_wrapper (MonoMethod *wrapper)
2791 {
2792 MonoMethod *res;
2793
2794 if (wrapper->wrapper_type == MONO_WRAPPER_NONE)
2795 return wrapper;
2796
2797 mono_marshal_lock ();
2798 res = g_hash_table_lookup (wrapper_hash, wrapper);
2799 mono_marshal_unlock ();
2800 return res;
2801 }
2802
2803 MonoMethod *
2804 mono_marshal_get_delegate_begin_invoke (MonoMethod *method)
2805 {
2806 MonoMethodSignature *sig;
2807 MonoMethodBuilder *mb;
2808 MonoMethod *res;
2809 GHashTable *cache;
2810 int params_var;
2811 char *name;
2812
2813 g_assert (method && method->klass->parent == mono_defaults.multicastdelegate_class &&
2814 !strcmp (method->name, "BeginInvoke"));
2815
2816 sig = signature_no_pinvoke (method);
2817
2818 cache = method->klass->image->delegate_begin_invoke_cache;
2819 if ((res = mono_marshal_find_in_cache (cache, sig)))
2820 return res;
2821
2822 g_assert (sig->hasthis);
2823
2824 name = mono_signature_to_name (sig, "begin_invoke");
2825 mb = mono_mb_new (mono_defaults.multicastdelegate_class, name, MONO_WRAPPER_DELEGATE_BEGIN_INVOKE);
2826 g_free (name);
2827
2828 mb->method->save_lmf = 1;
2829
2830 params_var = mono_mb_emit_save_args (mb, sig, FALSE);
2831
2832 mono_mb_emit_ldarg (mb, 0);
2833 mono_mb_emit_ldloc (mb, params_var);
2834 mono_mb_emit_icall (mb, mono_delegate_begin_invoke);
2835 emit_thread_interrupt_checkpoint (mb);
2836 mono_mb_emit_byte (mb, CEE_RET);
2837
2838 res = mono_mb_create_and_cache (cache, sig, mb, sig, sig->param_count + 16);
2839 mono_mb_free (mb);
2840 return res;
2841 }
2842
2843 static MonoObject *
2844 mono_delegate_end_invoke (MonoDelegate *delegate, gpointer *params)
2845 {
2846 MonoDomain *domain = mono_domain_get ();
2847 MonoAsyncResult *ares;
2848 MonoMethod *method = NULL;
2849 MonoMethodSignature *sig;
2850 MonoMethodMessage *msg;
2851 MonoObject *res, *exc;
2852 MonoArray *out_args;
2853 MonoClass *klass;
2854
2855 g_assert (delegate);
2856
2857 if (!delegate->method_info || !delegate->method_info->method)
2858 g_assert_not_reached ();
2859
2860 klass = delegate->object.vtable->klass;
2861
2862 method = mono_class_get_method_from_name (klass, "EndInvoke", -1);
2863 g_assert (method != NULL);
2864
2865 sig = signature_no_pinvoke (method);
2866
2867 msg = mono_method_call_message_new (method, params, NULL, NULL, NULL);
2868
2869 ares = mono_array_get (msg->args, gpointer, sig->param_count - 1);
2870 g_assert (ares);
2871
2872 if (delegate->target && mono_object_class (delegate->target) == mono_defaults.transparent_proxy_class) {
2873 MonoTransparentProxy* tp = (MonoTransparentProxy *)delegate->target;
2874 msg = (MonoMethodMessage *)mono_object_new (domain, mono_defaults.mono_method_message_class);
2875 mono_message_init (domain, msg, delegate->method_info, NULL);
2876 msg->call_type = CallType_EndInvoke;
2877 MONO_OBJECT_SETREF (msg, async_result, ares);
2878 res = mono_remoting_invoke ((MonoObject *)tp->rp, msg, &exc, &out_args);
2879 } else {
2880 res = mono_thread_pool_finish (ares, &out_args, &exc);
2881 }
2882
2883 if (exc) {
2884 if (((MonoException*)exc)->stack_trace) {
2885 char *strace = mono_string_to_utf8 (((MonoException*)exc)->stack_trace);
2886 char *tmp;
2887 tmp = g_strdup_printf ("%s\nException Rethrown at:\n", strace);
2888 g_free (strace);
2889 MONO_OBJECT_SETREF (((MonoException*)exc), stack_trace, mono_string_new (domain, tmp));
2890 g_free (tmp);
2891 }
2892 mono_raise_exception ((MonoException*)exc);
2893 }
2894
2895 mono_method_return_message_restore (method, params, out_args);
2896 return res;
2897 }
2898
2899 static void
2900 mono_mb_emit_restore_result (MonoMethodBuilder *mb, MonoType *return_type)
2901 {
2902 MonoType *t = mono_type_get_underlying_type (return_type);
2903
2904 if (return_type->byref)
2905 return_type = &mono_defaults.int_class->byval_arg;
2906
2907 switch (t->type) {
2908 case MONO_TYPE_VOID:
2909 g_assert_not_reached ();
2910 break;
2911 case MONO_TYPE_PTR:
2912 case MONO_TYPE_STRING:
2913 case MONO_TYPE_CLASS:
2914 case MONO_TYPE_OBJECT:
2915 case MONO_TYPE_ARRAY:
2916 case MONO_TYPE_SZARRAY:
2917 /* nothing to do */
2918 break;
2919 case MONO_TYPE_U1:
2920 case MONO_TYPE_BOOLEAN:
2921 case MONO_TYPE_I1:
2922 case MONO_TYPE_U2:
2923 case MONO_TYPE_CHAR:
2924 case MONO_TYPE_I2:
2925 case MONO_TYPE_I:
2926 case MONO_TYPE_U:
2927 case MONO_TYPE_I4:
2928 case MONO_TYPE_U4:
2929 case MONO_TYPE_U8:
2930 case MONO_TYPE_I8:
2931 case MONO_TYPE_R4:
2932 case MONO_TYPE_R8:
2933 mono_mb_emit_op (mb, CEE_UNBOX, mono_class_from_mono_type (return_type));
2934 mono_mb_emit_byte (mb, mono_type_to_ldind (return_type));
2935 break;
2936 case MONO_TYPE_GENERICINST:
2937 if (!mono_type_generic_inst_is_valuetype (return_type))
2938 break;
2939 /* fall through */
2940 case MONO_TYPE_VALUETYPE: {
2941 MonoClass *klass = mono_class_from_mono_type (return_type);
2942 mono_mb_emit_op (mb, CEE_UNBOX, klass);
2943 mono_mb_emit_op (mb, CEE_LDOBJ, klass);
2944 break;
2945 }
2946 default:
2947 g_warning ("type 0x%x not handled", return_type->type);
2948 g_assert_not_reached ();
2949 }
2950
2951 mono_mb_emit_byte (mb, CEE_RET);
2952 }
2953
2954 MonoMethod *
2955 mono_marshal_get_delegate_end_invoke (MonoMethod *method)
2956 {
2957 MonoMethodSignature *sig;
2958 MonoMethodBuilder *mb;
2959 MonoMethod *res;
2960 GHashTable *cache;
2961 int params_var;
2962 char *name;
2963
2964 g_assert (method && method->klass->parent == mono_defaults.multicastdelegate_class &&
2965 !strcmp (method->name, "EndInvoke"));
2966
2967 sig = signature_no_pinvoke (method);
2968
2969 cache = method->klass->image->delegate_end_invoke_cache;
2970 if ((res = mono_marshal_find_in_cache (cache, sig)))
2971 return res;
2972
2973 g_assert (sig->hasthis);
2974
2975 name = mono_signature_to_name (sig, "end_invoke");
2976 mb = mono_mb_new (mono_defaults.multicastdelegate_class, name, MONO_WRAPPER_DELEGATE_END_INVOKE);
2977 g_free (name);
2978
2979 mb->method->save_lmf = 1;
2980
2981 params_var = mono_mb_emit_save_args (mb, sig, FALSE);
2982
2983 mono_mb_emit_ldarg (mb, 0);
2984 mono_mb_emit_ldloc (mb, params_var);
2985 mono_mb_emit_icall (mb, mono_delegate_end_invoke);
2986 emit_thread_interrupt_checkpoint (mb);
2987
2988 if (sig->ret->type == MONO_TYPE_VOID) {
2989 mono_mb_emit_byte (mb, CEE_POP);
2990 mono_mb_emit_byte (mb, CEE_RET);
2991 } else
2992 mono_mb_emit_restore_result (mb, sig->ret);
2993
2994 res = mono_mb_create_and_cache (cache, sig,
2995 mb, sig, sig->param_count + 16);
2996 mono_mb_free (mb);
2997
2998 return res;
2999 }
3000
3001 static MonoObject *
3002 mono_remoting_wrapper (MonoMethod *method, gpointer *params)
3003 {
3004 MonoMethodMessage *msg;
3005 MonoTransparentProxy *this;
3006 MonoObject *res, *exc;
3007 MonoArray *out_args;
3008
3009 this = *((MonoTransparentProxy **)params [0]);
3010
3011 g_assert (this);
3012 g_assert (((MonoObject *)this)->vtable->klass == mono_defaults.transparent_proxy_class);
3013
3014 /* skip the this pointer */
3015 params++;
3016
3017 if (this->remote_class->proxy_class->contextbound && this->rp->context == (MonoObject *) mono_context_get ())
3018 {
3019 int i;
3020 MonoMethodSignature *sig = mono_method_signature (method);
3021 int count = sig->param_count;
3022 gpointer* mparams = (gpointer*) alloca(count*sizeof(gpointer));
3023
3024 for (i=0; i<count; i++) {
3025 MonoClass *class = mono_class_from_mono_type (sig->params [i]);
3026 if (class->valuetype) {
3027 if (sig->params [i]->byref)
3028 mparams[i] = *((gpointer *)params [i]);
3029 else
3030 mparams[i] = params [i];
3031 } else {
3032 mparams[i] = *((gpointer**)params [i]);
3033 }
3034 }
3035
3036 return mono_runtime_invoke (method, method->klass->valuetype? mono_object_unbox ((MonoObject*)this): this, mparams, NULL);
3037 }
3038
3039 msg = mono_method_call_message_new (method, params, NULL, NULL, NULL);
3040
3041 res = mono_remoting_invoke ((MonoObject *)this->rp, msg, &exc, &out_args);
3042
3043 if (exc)
3044 mono_raise_exception ((MonoException *)exc);
3045
3046 mono_method_return_message_restore (method, params, out_args);
3047
3048 return res;
3049 }
3050
3051 /**
3052 * cominterop_get_native_wrapper_adjusted:
3053 * @method: managed COM Interop method
3054 *
3055 * Returns: the generated method to call with signature matching
3056 * the unmanaged COM Method signature
3057 */
3058 static MonoMethod *
3059 cominterop_get_native_wrapper_adjusted (MonoMethod *method)
3060 {
3061 MonoMethod *res;
3062 MonoMethodBuilder *mb_native;
3063 MonoMarshalSpec **mspecs;
3064 MonoMethodSignature *sig, *sig_native;
3065 MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *) method;
3066 int i;
3067
3068 sig = mono_method_signature (method);
3069
3070 // create unmanaged wrapper
3071 mb_native = mono_mb_new (method->klass, method->name, MONO_WRAPPER_MANAGED_TO_NATIVE);
3072 sig_native = signature_cominterop (method->klass->image, sig);
3073
3074 mspecs = g_new (MonoMarshalSpec*, sig_native->param_count+1);
3075 memset (mspecs, 0, sizeof(MonoMarshalSpec*)*(sig_native->param_count+1));
3076
3077 mono_method_get_marshal_info (method, mspecs);
3078
3079 // move managed args up one
3080 for (i = sig->param_count; i >= 1; i--)
3081 mspecs[i+1] = mspecs[i];
3082
3083 // first arg is IntPtr for interface
3084 mspecs[1] = NULL;
3085
3086 // move return spec to last param
3087 if (!MONO_TYPE_IS_VOID (sig->ret))
3088 mspecs[sig_native->param_count] = mspecs[0];
3089
3090 mspecs[0] = NULL;
3091
3092 mono_marshal_emit_native_wrapper(mono_defaults.corlib, mb_native, sig_native, piinfo, mspecs, piinfo->addr);
3093
3094 mono_loader_lock ();
3095 mono_marshal_lock ();
3096 res = mono_mb_create_method (mb_native, sig_native, sig_native->param_count + 16);
3097 mono_marshal_unlock ();
3098 mono_loader_unlock ();
3099
3100 mono_mb_free (mb_native);
3101
3102 for (i = sig_native->param_count; i >= 0; i--)
3103 if (mspecs [i])
3104 mono_metadata_free_marshal_spec (mspecs [i]);
3105 g_free (mspecs);
3106
3107 return res;
3108 }
3109
3110 /**
3111 * cominterop_get_native_wrapper:
3112 * @method: managed method
3113 *
3114 * Returns: the generated method to call
3115 */
3116 static MonoMethod *
3117 cominterop_get_native_wrapper (MonoMethod *method)
3118 {
3119 MonoMethod *res;
3120 GHashTable *cache;
3121 MonoMethodBuilder *mb;
3122 MonoMethodSignature *sig, *csig;
3123
3124 g_assert (method);
3125
3126 cache = method->klass->image->cominterop_wrapper_cache;
3127 if ((res = mono_marshal_find_in_cache (cache, method)))
3128 return res;
3129
3130 sig = mono_method_signature (method);
3131 mb = mono_mb_new (method->klass, method->name, MONO_WRAPPER_COMINTEROP);
3132
3133 /* if method klass is import, that means method
3134 * is really a com call. let interop system emit it.
3135 */
3136 if (MONO_CLASS_IS_IMPORT(method->klass)) {
3137 /* FIXME: we have to call actual class .ctor
3138 * instead of just __ComObject .ctor.
3139 */
3140 if (!strcmp(method->name, ".ctor")) {
3141 static MonoMethod *ctor = NULL;
3142
3143 if (!ctor)
3144 ctor = mono_class_get_method_from_name (mono_defaults.com_object_class, ".ctor", 0);
3145 mono_mb_emit_ldarg (mb, 0);
3146 mono_mb_emit_managed_call (mb, ctor, NULL);
3147 mono_mb_emit_byte (mb, CEE_RET);
3148 }
3149 else {
3150 static MonoMethod * ThrowExceptionForHR = NULL;
3151 static MonoMethod * GetInterface = NULL;
3152 MonoMethod *adjusted_method;
3153 int hr;
3154 int retval = 0;
3155 int ptr_this;
3156 int i;
3157 if (!GetInterface)
3158 GetInterface = mono_class_get_method_from_name (mono_defaults.com_object_class, "GetInterface", 1);
3159
3160 // add local variables
3161 hr = mono_mb_add_local (mb, &mono_defaults.int32_class->byval_arg);
3162 ptr_this = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
3163 if (!MONO_TYPE_IS_VOID (sig->ret))
3164 retval = mono_mb_add_local (mb, sig->ret);
3165
3166 // get the type for the interface the method is defined on
3167 // and then get the underlying COM interface for that type
3168 mono_mb_emit_ldarg (mb, 0);
3169 mono_mb_emit_ptr (mb, method);
3170 mono_mb_emit_icall (mb, cominterop_get_method_interface);
3171 mono_mb_emit_managed_call (mb, GetInterface, NULL);
3172 mono_mb_emit_stloc (mb, ptr_this);
3173
3174 // arg 1 is unmanaged this pointer
3175 mono_mb_emit_ldloc (mb, ptr_this);
3176
3177 // load args
3178 for (i = 1; i <= sig->param_count; i++)
3179 mono_mb_emit_ldarg (mb, i);
3180
3181 // push managed return value as byref last argument
3182 if (!MONO_TYPE_IS_VOID (sig->ret))
3183 mono_mb_emit_ldloc_addr (mb, retval);
3184
3185 adjusted_method = cominterop_get_native_wrapper_adjusted (method);
3186 mono_mb_emit_managed_call (mb, adjusted_method, NULL);
3187
3188 // store HRESULT to check
3189 mono_mb_emit_stloc (mb, hr);
3190
3191 if (!ThrowExceptionForHR)
3192 ThrowExceptionForHR = mono_class_get_method_from_name (mono_defaults.marshal_class, "ThrowExceptionForHR", 1);
3193 mono_mb_emit_ldloc (mb, hr);
3194 mono_mb_emit_managed_call (mb, ThrowExceptionForHR, NULL);
3195
3196 // load return value managed is expecting
3197 if (!MONO_TYPE_IS_VOID (sig->ret))
3198 mono_mb_emit_ldloc (mb, retval);
3199
3200 mono_mb_emit_byte (mb, CEE_RET);
3201 }
3202
3203
3204 }
3205 /* Does this case ever get hit? */
3206 else {
3207 char *msg = g_strdup ("non imported interfaces on \
3208 imported classes is not yet implemented.");
3209 mono_mb_emit_exception (mb, "NotSupportedException", msg);
3210 }
3211 csig = signature_dup (method->klass->image, sig);
3212 csig->pinvoke = 0;
3213 res = mono_mb_create_and_cache (cache, method,
3214 mb, csig, csig->param_count + 16);
3215 mono_mb_free (mb);
3216 return res;
3217 }
3218
3219 /**
3220 * cominterop_get_invoke:
3221 * @method: managed method
3222 *
3223 * Returns: the generated method that calls the underlying __ComObject
3224 * rather than the proxy object.
3225 */
3226 static MonoMethod *
3227 cominterop_get_invoke (MonoMethod *method)
3228 {
3229 MonoMethodSignature *sig;
3230 MonoMethodBuilder *mb;
3231 MonoMethod *res;
3232 int i, temp_obj;
3233 GHashTable* cache = method->klass->image->cominterop_invoke_cache;
3234
3235 g_assert (method);
3236
3237 if ((res = mono_marshal_find_in_cache (cache, method)))
3238 return res;
3239
3240 sig = signature_no_pinvoke (method);
3241
3242 /* we cant remote methods without this pointer */
3243 if (!sig->hasthis)
3244 return method;
3245
3246 mb = mono_mb_new (method->klass, method->name, MONO_WRAPPER_COMINTEROP_INVOKE);
3247
3248 /* get real proxy object, which is a ComInteropProxy in this case*/
3249 temp_obj = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
3250 mono_mb_emit_ldarg (mb, 0);
3251 mono_mb_emit_ldflda (mb, G_STRUCT_OFFSET (MonoTransparentProxy, rp));
3252 mono_mb_emit_byte (mb, CEE_LDIND_REF);
3253
3254 /* load the RCW from the ComInteropProxy*/
3255 mono_mb_emit_ldflda (mb, G_STRUCT_OFFSET (MonoComInteropProxy, com_object));
3256 mono_mb_emit_byte (mb, CEE_LDIND_REF);
3257
3258 /* load args and make the call on the RCW */
3259 for (i = 1; i <= sig->param_count; i++)
3260 mono_mb_emit_ldarg (mb, i);
3261
3262 if (method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) {
3263 MonoMethod * native_wrapper = cominterop_get_native_wrapper(method);
3264 mono_mb_emit_managed_call (mb, native_wrapper, NULL);
3265 }
3266 else {
3267 if (method->flags & METHOD_ATTRIBUTE_VIRTUAL)
3268 mono_mb_emit_op (mb, CEE_CALLVIRT, method);
3269 else
3270 mono_mb_emit_op (mb, CEE_CALL, method);
3271 }
3272
3273 if (!strcmp(method->name, ".ctor")) {
3274 static MonoClass *com_interop_proxy_class = NULL;
3275 static MonoMethod *cache_proxy = NULL;
3276
3277 if (!com_interop_proxy_class)
3278 com_interop_proxy_class = mono_class_from_name (mono_defaults.corlib, "Mono.Interop", "ComInteropProxy");
3279 if (!cache_proxy)
3280 cache_proxy = mono_class_get_method_from_name (com_interop_proxy_class, "CacheProxy", 0);
3281
3282 mono_mb_emit_ldarg (mb, 0);
3283 mono_mb_emit_ldflda (mb, G_STRUCT_OFFSET (MonoTransparentProxy, rp));
3284 mono_mb_emit_byte (mb, CEE_LDIND_REF);
3285 mono_mb_emit_managed_call (mb, cache_proxy, NULL);
3286 }
3287
3288 emit_thread_interrupt_checkpoint (mb);
3289
3290 mono_mb_emit_byte (mb, CEE_RET);
3291
3292 res = mono_mb_create_and_cache (cache, method, mb, sig, sig->param_count + 16);
3293 mono_mb_free (mb);
3294
3295 return res;
3296 }
3297
3298 MonoMethod *
3299 mono_marshal_get_remoting_invoke (MonoMethod *method)
3300 {
3301 MonoMethodSignature *sig;
3302 MonoMethodBuilder *mb;
3303 MonoMethod *res;
3304 int params_var;
3305
3306 g_assert (method);
3307
3308 if (method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE || method->wrapper_type == MONO_WRAPPER_XDOMAIN_INVOKE)
3309 return method;
3310
3311 /* this seems to be the best plase to put this, as all remoting invokes seem to get filtered through here */
3312 if ((method->klass->is_com_object || method->klass == mono_defaults.com_object_class) && !mono_class_vtable (mono_domain_get (), method->klass)->remote)
3313 return cominterop_get_invoke(method);
3314
3315 sig = signature_no_pinvoke (method);
3316
3317 /* we cant remote methods without this pointer */
3318 if (!sig->hasthis)
3319 return method;
3320
3321 if ((res = mono_marshal_remoting_find_in_cache (method, MONO_WRAPPER_REMOTING_INVOKE)))
3322 return res;
3323
3324 mb = mono_mb_new (method->klass, method->name, MONO_WRAPPER_REMOTING_INVOKE);
3325 mb->method->save_lmf = 1;
3326
3327 params_var = mono_mb_emit_save_args (mb, sig, TRUE);
3328
3329 mono_mb_emit_ptr (mb, method);
3330 mono_mb_emit_ldloc (mb, params_var);
3331 mono_mb_emit_icall (mb, mono_remoting_wrapper);
3332 emit_thread_interrupt_checkpoint (mb);
3333
3334 if (sig->ret->type == MONO_TYPE_VOID) {
3335 mono_mb_emit_byte (mb, CEE_POP);
3336 mono_mb_emit_byte (mb, CEE_RET);
3337 } else {
3338 mono_mb_emit_restore_result (mb, sig->ret);
3339 }
3340
3341 res = mono_remoting_mb_create_and_cache (method, mb, sig, sig->param_count + 16);
3342 mono_mb_free (mb);
3343
3344 return res;
3345 }
3346
3347 /* mono_get_xdomain_marshal_type()
3348 * Returns the kind of marshalling that a type needs for cross domain calls.
3349 */
3350 static MonoXDomainMarshalType
3351 mono_get_xdomain_marshal_type (MonoType *t)
3352 {
3353 switch (t->type) {
3354 case MONO_TYPE_VOID:
3355 g_assert_not_reached ();
3356 break;
3357 case MONO_TYPE_U1:
3358 case MONO_TYPE_I1:
3359 case MONO_TYPE_BOOLEAN:
3360 case MONO_TYPE_U2:
3361 case MONO_TYPE_I2:
3362 case MONO_TYPE_CHAR:
3363 case MONO_TYPE_U4:
3364 case MONO_TYPE_I4:
3365 case MONO_TYPE_I8:
3366 case MONO_TYPE_U8:
3367 case MONO_TYPE_R4:
3368 case MONO_TYPE_R8:
3369 return MONO_MARSHAL_NONE;
3370 case MONO_TYPE_STRING:
3371 return MONO_MARSHAL_COPY;
3372 case MONO_TYPE_ARRAY:
3373 case MONO_TYPE_SZARRAY: {
3374 MonoClass *elem_class = mono_class_from_mono_type (t)->element_class;
3375 if (mono_get_xdomain_marshal_type (&(elem_class->byval_arg)) != MONO_MARSHAL_SERIALIZE)
3376 return MONO_MARSHAL_COPY;
3377 break;
3378 }
3379 }
3380
3381 if (mono_class_from_mono_type (t) == mono_defaults.stringbuilder_class)
3382 return MONO_MARSHAL_COPY;
3383
3384 return MONO_MARSHAL_SERIALIZE;
3385 }
3386
3387
3388 /* mono_marshal_xdomain_copy_value
3389 * Makes a copy of "val" suitable for the current domain.
3390 */
3391 static MonoObject *
3392 mono_marshal_xdomain_copy_value (MonoObject *val)
3393 {
3394 MonoDomain *domain;
3395 if (val == NULL) return NULL;
3396
3397 domain = mono_domain_get ();
3398
3399 switch (mono_object_class (val)->byval_arg.type) {
3400 case MONO_TYPE_VOID:
3401 g_assert_not_reached ();
3402 break;
3403 case MONO_TYPE_U1:
3404 case MONO_TYPE_I1:
3405 case MONO_TYPE_BOOLEAN:
3406 case MONO_TYPE_U2:
3407 case MONO_TYPE_I2:
3408 case MONO_TYPE_CHAR:
3409 case MONO_TYPE_U4:
3410 case MONO_TYPE_I4:
3411 case MONO_TYPE_I8:
3412 case MONO_TYPE_U8:
3413 case MONO_TYPE_R4:
3414 case MONO_TYPE_R8: {
3415 return mono_value_box (domain, mono_object_class (val), ((char*)val) + sizeof(MonoObject));
3416 }
3417 case MONO_TYPE_STRING: {
3418 MonoString *str = (MonoString *) val;
3419 return (MonoObject *) mono_string_new_utf16 (domain, mono_string_chars (str), mono_string_length (str));
3420 }
3421 case MONO_TYPE_ARRAY:
3422 case MONO_TYPE_SZARRAY: {
3423 MonoArray *acopy;
3424 MonoXDomainMarshalType mt = mono_get_xdomain_marshal_type (&(mono_object_class (val)->element_class->byval_arg));
3425 if (mt == MONO_MARSHAL_SERIALIZE) return NULL;
3426 acopy = mono_array_clone_in_domain (domain, (MonoArray *) val);
3427 if (mt == MONO_MARSHAL_COPY) {
3428 int i, len = mono_array_length (acopy);
3429 for (i = 0; i < len; i++) {
3430 MonoObject *item = mono_array_get (acopy, gpointer, i);
3431 mono_array_setref (acopy, i, mono_marshal_xdomain_copy_value (item));
3432 }
3433 }
3434 return (MonoObject *) acopy;
3435 }
3436 }
3437
3438 if (mono_object_class (val) == mono_defaults.stringbuilder_class) {
3439 MonoStringBuilder *oldsb = (MonoStringBuilder *) val;
3440 MonoStringBuilder *newsb = (MonoStringBuilder *) mono_object_new (domain, mono_defaults.stringbuilder_class);
3441 MONO_OBJECT_SETREF (newsb, str, mono_string_new_utf16 (domain, mono_string_chars (oldsb->str), mono_string_length (oldsb->str)));
3442 newsb->length = oldsb->length;
3443 newsb->max_capacity = (gint32)0x7fffffff;
3444 return (MonoObject *) newsb;
3445 }
3446 return NULL;
3447 }
3448
3449 /* mono_marshal_xdomain_copy_out_value()
3450 * Copies the contents of the src instance into the dst instance. src and dst
3451 * must have the same type, and if they are arrays, the same size.
3452 */
3453 static void
3454 mono_marshal_xdomain_copy_out_value (MonoObject *src, MonoObject *dst)
3455 {
3456 if (src == NULL || dst == NULL) return;
3457
3458 g_assert (mono_object_class (src) == mono_object_class (dst));
3459
3460 switch (mono_object_class (src)->byval_arg.type) {
3461 case MONO_TYPE_ARRAY:
3462 case MONO_TYPE_SZARRAY: {
3463 int mt = mono_get_xdomain_marshal_type (&(mono_object_class (src)->element_class->byval_arg));
3464 if (mt == MONO_MARSHAL_SERIALIZE) return;
3465 if (mt == MONO_MARSHAL_COPY) {
3466 int i, len = mono_array_length ((MonoArray *)dst);
3467 for (i = 0; i < len; i++) {
3468 MonoObject *item = mono_array_get ((MonoArray *)src, gpointer, i);
3469 mono_array_setref ((MonoArray *)dst, i, mono_marshal_xdomain_copy_value (item));
3470 }
3471 } else {
3472 mono_array_full_copy ((MonoArray *)src, (MonoArray *)dst);
3473 }
3474 return;
3475 }
3476 }
3477
3478 if (mono_object_class (src) == mono_defaults.stringbuilder_class) {
3479 MonoStringBuilder *src_sb = (MonoStringBuilder *) src;
3480 MonoStringBuilder *dst_sb = (MonoStringBuilder *) dst;
3481
3482 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)));
3483 dst_sb->cached_str = NULL;
3484 dst_sb->length = src_sb->length;
3485 }
3486 }
3487
3488 static void
3489 mono_marshal_emit_xdomain_copy_value (MonoMethodBuilder *mb, MonoClass *pclass)
3490 {
3491 mono_mb_emit_icall (mb, mono_marshal_xdomain_copy_value);
3492 mono_mb_emit_op (mb, CEE_CASTCLASS, pclass);
3493 }
3494
3495 static void
3496 mono_marshal_emit_xdomain_copy_out_value (MonoMethodBuilder *mb, MonoClass *pclass)
3497 {
3498 mono_mb_emit_icall (mb, mono_marshal_xdomain_copy_out_value);
3499 }
3500
3501 /* mono_marshal_supports_fast_xdomain()
3502 * Returns TRUE if the method can use the fast xdomain wrapper.
3503 */
3504 static gboolean
3505 mono_marshal_supports_fast_xdomain (MonoMethod *method)
3506 {
3507 return !method->klass->contextbound &&
3508 !((method->flags & METHOD_ATTRIBUTE_SPECIAL_NAME) && (strcmp (".ctor", method->name) == 0));
3509 }
3510
3511 static gint32
3512 mono_marshal_set_domain_by_id (gint32 id, MonoBoolean push)
3513 {
3514 MonoDomain *current_domain = mono_domain_get ();
3515 MonoDomain *domain = mono_domain_get_by_id (id);
3516
3517 if (!domain || !mono_domain_set (domain, FALSE))
3518 mono_raise_exception (mono_get_exception_appdomain_unloaded ());
3519
3520 if (push)
3521 mono_thread_push_appdomain_ref (domain);
3522 else
3523 mono_thread_pop_appdomain_ref ();
3524
3525 return current_domain->domain_id;
3526 }
3527
3528 static void
3529 mono_marshal_emit_switch_domain (MonoMethodBuilder *mb)
3530 {
3531 mono_mb_emit_icall (mb, mono_marshal_set_domain_by_id);
3532 }
3533
3534 /* mono_marshal_emit_load_domain_method ()
3535 * Loads into the stack a pointer to the code of the provided method for
3536 * the current domain.
3537 */
3538 static void
3539 mono_marshal_emit_load_domain_method (MonoMethodBuilder *mb, MonoMethod *method)
3540 {
3541 /* We need a pointer to the method for the running domain (not the domain
3542 * that compiles the method).
3543 */
3544 mono_mb_emit_ptr (mb, method);
3545 mono_mb_emit_icall (mb, mono_compile_method);
3546 }
3547
3548 /* mono_marshal_check_domain_image ()
3549 * Returns TRUE if the image is loaded in the specified
3550 * application domain.
3551 */
3552 static gboolean
3553 mono_marshal_check_domain_image (gint32 domain_id, MonoImage *image)
3554 {
3555 MonoAssembly* ass;
3556 GSList *tmp;
3557
3558 MonoDomain *domain = mono_domain_get_by_id (domain_id);
3559 if (!domain)
3560 return FALSE;
3561
3562 mono_domain_assemblies_lock (domain);
3563 for (tmp = domain->domain_assemblies; tmp; tmp = tmp->next) {
3564 ass = tmp->data;
3565 if (ass->image == image)
3566 break;
3567 }
3568 mono_domain_assemblies_unlock (domain);
3569
3570 return tmp != NULL;
3571 }
3572
3573 /* mono_marshal_get_xappdomain_dispatch ()
3574 * Generates a method that dispatches a method call from another domain into
3575 * the current domain.
3576 */
3577 static MonoMethod *
3578 mono_marshal_get_xappdomain_dispatch (MonoMethod *method, int *marshal_types, int complex_count, int complex_out_count, int ret_marshal_type)
3579 {
3580 MonoMethodSignature *sig, *csig;
3581 MonoMethodBuilder *mb;
3582 MonoMethod *res;
3583 int i, j, param_index, copy_locals_base;
3584 MonoClass *ret_class = NULL;
3585 int loc_array=0, loc_return=0, loc_serialized_exc=0;
3586 MonoExceptionClause *main_clause;
3587 MonoMethodHeader *header;
3588 int pos, pos_leave;
3589 gboolean copy_return;
3590
3591 if ((res = mono_marshal_remoting_find_in_cache (method, MONO_WRAPPER_XDOMAIN_DISPATCH)))
3592 return res;
3593
3594 sig = mono_method_signature (method);
3595 copy_return = (sig->ret->type != MONO_TYPE_VOID && ret_marshal_type != MONO_MARSHAL_SERIALIZE);
3596
3597 j = 0;
3598 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 3 + sig->param_count - complex_count);
3599 csig->params [j++] = &mono_defaults.object_class->byval_arg;
3600 csig->params [j++] = &byte_array_class->this_arg;
3601 csig->params [j++] = &byte_array_class->this_arg;
3602 for (i = 0; i < sig->param_count; i++) {
3603 if (marshal_types [i] != MONO_MARSHAL_SERIALIZE)
3604 csig->params [j++] = sig->params [i];
3605 }
3606 if (copy_return)
3607 csig->ret = sig->ret;
3608 else
3609 csig->ret = &mono_defaults.void_class->byval_arg;
3610 csig->pinvoke = 1;
3611 csig->hasthis = FALSE;
3612
3613 mb = mono_mb_new (method->klass, method->name, MONO_WRAPPER_XDOMAIN_DISPATCH);
3614 mb->method->save_lmf = 1;
3615
3616 /* Locals */
3617
3618 loc_serialized_exc = mono_mb_add_local (mb, &byte_array_class->byval_arg);
3619 if (complex_count > 0)
3620 loc_array = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
3621 if (sig->ret->type != MONO_TYPE_VOID) {
3622 loc_return = mono_mb_add_local (mb, sig->ret);
3623 ret_class = mono_class_from_mono_type (sig->ret);
3624 }
3625
3626 /* try */
3627
3628 main_clause = g_new0 (MonoExceptionClause, 1);
3629 main_clause->try_offset = mb->pos;
3630
3631 /* Clean the call context */
3632
3633 mono_mb_emit_byte (mb, CEE_LDNULL);
3634 mono_mb_emit_managed_call (mb, method_set_call_context, NULL);
3635 mono_mb_emit_byte (mb, CEE_POP);
3636
3637 /* Deserialize call data */
3638
3639 mono_mb_emit_ldarg (mb, 1);
3640 mono_mb_emit_byte (mb, CEE_LDIND_REF);
3641 mono_mb_emit_byte (mb, CEE_DUP);
3642 pos = mono_mb_emit_short_branch (mb, CEE_BRFALSE_S);
3643
3644 mono_marshal_emit_xdomain_copy_value (mb, byte_array_class);
3645 mono_mb_emit_managed_call (mb, method_rs_deserialize, NULL);
3646
3647 if (complex_count > 0)
3648 mono_mb_emit_stloc (mb, loc_array);
3649 else
3650 mono_mb_emit_byte (mb, CEE_POP);
3651
3652 mono_mb_patch_addr_s (mb, pos, mb->pos - (pos + 1));
3653
3654 /* Get the target object */
3655
3656 mono_mb_emit_ldarg (mb, 0);
3657 mono_mb_emit_managed_call (mb, method_rs_appdomain_target, NULL);
3658
3659 /* Load the arguments */
3660
3661 copy_locals_base = mb->locals;
3662 param_index = 3; // Index of the first non-serialized parameter of this wrapper
3663 j = 0;
3664 for (i = 0; i < sig->param_count; i++) {
3665 MonoType *pt = sig->params [i];
3666 MonoClass *pclass = mono_class_from_mono_type (pt);
3667 switch (marshal_types [i]) {
3668 case MONO_MARSHAL_SERIALIZE: {
3669 /* take the value from the serialized array */
3670 mono_mb_emit_ldloc (mb, loc_array);
3671 mono_mb_emit_icon (mb, j++);
3672 if (pt->byref) {
3673 if (pclass->valuetype) {
3674 mono_mb_emit_byte (mb, CEE_LDELEM_REF);
3675 mono_mb_emit_op (mb, CEE_UNBOX, pclass);
3676 } else {
3677 mono_mb_emit_op (mb, CEE_LDELEMA, pclass);
3678 }
3679 } else {
3680 if (pclass->valuetype) {
3681 mono_mb_emit_byte (mb, CEE_LDELEM_REF);
3682 mono_mb_emit_op (mb, CEE_UNBOX, pclass);
3683 mono_mb_emit_op (mb, CEE_LDOBJ, pclass);
3684 } else {
3685 mono_mb_emit_byte (mb, CEE_LDELEM_REF);
3686 if (pclass != mono_defaults.object_class) {
3687 mono_mb_emit_op (mb, CEE_CASTCLASS, pclass);
3688 }
3689 }
3690 }
3691 break;
3692 }
3693 case MONO_MARSHAL_COPY_OUT: {
3694 /* Keep a local copy of the value since we need to copy it back after the call */
3695 int copy_local = mono_mb_add_local (mb, &(pclass->byval_arg));
3696 mono_mb_emit_ldarg (mb, param_index++);
3697 mono_marshal_emit_xdomain_copy_value (mb, pclass);
3698 mono_mb_emit_byte (mb, CEE_DUP);
3699 mono_mb_emit_stloc (mb, copy_local);
3700 break;
3701 }
3702 case MONO_MARSHAL_COPY: {
3703 mono_mb_emit_ldarg (mb, param_index);
3704 if (pt->byref) {
3705 mono_mb_emit_byte (mb, CEE_DUP);
3706 mono_mb_emit_byte (mb, CEE_DUP);
3707 mono_mb_emit_byte (mb, CEE_LDIND_REF);
3708 mono_marshal_emit_xdomain_copy_value (mb, pclass);
3709 mono_mb_emit_byte (mb, CEE_STIND_REF);
3710 } else {
3711 mono_marshal_emit_xdomain_copy_value (mb, pclass);
3712 }
3713 param_index++;
3714 break;
3715 }
3716 case MONO_MARSHAL_NONE:
3717 mono_mb_emit_ldarg (mb, param_index++);
3718 break;
3719 }
3720 }
3721
3722 /* Make the call to the real object */
3723
3724 emit_thread_force_interrupt_checkpoint (mb);
3725
3726 mono_mb_emit_op (mb, CEE_CALLVIRT, method);
3727
3728 if (sig->ret->type != MONO_TYPE_VOID)
3729 mono_mb_emit_stloc (mb, loc_return);
3730
3731 /* copy back MONO_MARSHAL_COPY_OUT parameters */
3732
3733 j = 0;
3734 param_index = 3;
3735 for (i = 0; i < sig->param_count; i++) {
3736 if (marshal_types [i] == MONO_MARSHAL_SERIALIZE) continue;
3737 if (marshal_types [i] == MONO_MARSHAL_COPY_OUT) {
3738 mono_mb_emit_ldloc (mb, copy_locals_base + (j++));
3739 mono_mb_emit_ldarg (mb, param_index);
3740 mono_marshal_emit_xdomain_copy_out_value (mb, mono_class_from_mono_type (sig->params [i]));
3741 }
3742 param_index++;
3743 }
3744
3745 /* Serialize the return values */
3746
3747 if (complex_out_count > 0) {
3748 /* Reset parameters in the array that don't need to be serialized back */
3749 j = 0;
3750 for (i = 0; i < sig->param_count; i++) {
3751 if (marshal_types[i] != MONO_MARSHAL_SERIALIZE) continue;
3752 if (!sig->params [i]->byref) {
3753 mono_mb_emit_ldloc (mb, loc_array);
3754 mono_mb_emit_icon (mb, j);
3755 mono_mb_emit_byte (mb, CEE_LDNULL);
3756 mono_mb_emit_byte (mb, CEE_STELEM_REF);
3757 }
3758 j++;
3759 }
3760
3761 /* Add the return value to the array */
3762
3763 if (ret_marshal_type == MONO_MARSHAL_SERIALIZE) {
3764 mono_mb_emit_ldloc (mb, loc_array);
3765 mono_mb_emit_icon (mb, complex_count); /* The array has an additional slot to hold the ret value */
3766 mono_mb_emit_ldloc (mb, loc_return);
3767 if (ret_class->valuetype) {
3768 mono_mb_emit_op (mb, CEE_BOX, ret_class);
3769 }
3770 mono_mb_emit_byte (mb, CEE_STELEM_REF);
3771 }
3772
3773 /* Serialize */
3774
3775 mono_mb_emit_ldarg (mb, 1);
3776 mono_mb_emit_ldloc (mb, loc_array);
3777 mono_mb_emit_managed_call (mb, method_rs_serialize, NULL);
3778 mono_mb_emit_byte (mb, CEE_STIND_REF);
3779 } else if (ret_marshal_type == MONO_MARSHAL_SERIALIZE) {
3780 mono_mb_emit_ldarg (mb, 1);
3781 mono_mb_emit_ldloc (mb, loc_return);
3782 if (ret_class->valuetype) {
3783 mono_mb_emit_op (mb, CEE_BOX, ret_class);
3784 }
3785 mono_mb_emit_managed_call (mb, method_rs_serialize, NULL);
3786 mono_mb_emit_byte (mb, CEE_STIND_REF);
3787 } else {
3788 mono_mb_emit_ldarg (mb, 1);
3789 mono_mb_emit_byte (mb, CEE_LDNULL);
3790 mono_mb_emit_managed_call (mb, method_rs_serialize, NULL);
3791 mono_mb_emit_byte (mb, CEE_STIND_REF);
3792 }
3793
3794 mono_mb_emit_ldarg (mb, 2);
3795 mono_mb_emit_byte (mb, CEE_LDNULL);
3796 mono_mb_emit_byte (mb, CEE_STIND_REF);
3797 pos_leave = mono_mb_emit_branch (mb, CEE_LEAVE);
3798
3799 /* Main exception catch */
3800 main_clause->flags = MONO_EXCEPTION_CLAUSE_NONE;
3801 main_clause->try_len = mb->pos - main_clause->try_offset;
3802 main_clause->data.catch_class = mono_defaults.object_class;
3803
3804 /* handler code */
3805 main_clause->handler_offset = mb->pos;
3806 mono_mb_emit_managed_call (mb, method_rs_serialize_exc, NULL);
3807 mono_mb_emit_stloc (mb, loc_serialized_exc);
3808 mono_mb_emit_ldarg (mb, 2);
3809 mono_mb_emit_ldloc (mb, loc_serialized_exc);
3810 mono_mb_emit_byte (mb, CEE_STIND_REF);
3811 mono_mb_emit_branch (mb, CEE_LEAVE);
3812 main_clause->handler_len = mb->pos - main_clause->handler_offset;
3813 /* end catch */
3814
3815 mono_mb_patch_addr (mb, pos_leave, mb->pos - (pos_leave + 4));
3816
3817 if (copy_return)
3818 mono_mb_emit_ldloc (mb, loc_return);
3819
3820 mono_mb_emit_byte (mb, CEE_RET);
3821
3822 res = mono_remoting_mb_create_and_cache (method, mb, csig, csig->param_count + 16);
3823 mono_mb_free (mb);
3824
3825 header = ((MonoMethodNormal *)res)->header;
3826 header->num_clauses = 1;
3827 header->clauses = main_clause;
3828
3829 return res;
3830 }
3831
3832 /* mono_marshal_get_xappdomain_invoke ()
3833 * Generates a fast remoting wrapper for cross app domain calls.
3834 */
3835 MonoMethod *
3836 mono_marshal_get_xappdomain_invoke (MonoMethod *method)
3837 {
3838 MonoMethodSignature *sig;
3839 MonoMethodBuilder *mb;
3840 MonoMethod *res;
3841 int i, j, complex_count, complex_out_count, copy_locals_base;
3842 int *marshal_types;
3843 MonoClass *ret_class = NULL;
3844 MonoMethod *xdomain_method;
3845 int ret_marshal_type = MONO_MARSHAL_NONE;
3846 int loc_array=0, loc_serialized_data=-1, loc_real_proxy;
3847 int loc_old_domainid, loc_domainid, loc_return=0, loc_serialized_exc=0, loc_context;
3848 int pos, pos_dispatch, pos_noex;
3849 gboolean copy_return = FALSE;
3850
3851 g_assert (method);
3852
3853 if (method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE || method->wrapper_type == MONO_WRAPPER_XDOMAIN_INVOKE)
3854 return method;
3855
3856 /* we cant remote methods without this pointer */
3857 if (!mono_method_signature (method)->hasthis)
3858 return method;
3859
3860 if (!mono_marshal_supports_fast_xdomain (method))
3861 return mono_marshal_get_remoting_invoke (method);
3862
3863 mono_remoting_marshal_init ();
3864
3865 if ((res = mono_marshal_remoting_find_in_cache (method, MONO_WRAPPER_XDOMAIN_INVOKE)))
3866 return res;
3867
3868 sig = signature_no_pinvoke (method);
3869
3870 mb = mono_mb_new (method->klass, method->name, MONO_WRAPPER_XDOMAIN_INVOKE);
3871 mb->method->save_lmf = 1;
3872
3873 /* Count the number of parameters that need to be serialized */
3874
3875 marshal_types = alloca (sizeof (int) * sig->param_count);
3876 complex_count = complex_out_count = 0;
3877 for (i = 0; i < sig->param_count; i++) {
3878 MonoType *ptype = sig->params[i];
3879 int mt = mono_get_xdomain_marshal_type (ptype);
3880
3881 /* If the [Out] attribute is applied to a parameter that can be internally copied,
3882 * the copy will be made by reusing the original object instance
3883 */
3884 if ((ptype->attrs & PARAM_ATTRIBUTE_OUT) != 0 && mt == MONO_MARSHAL_COPY && !ptype->byref)
3885 mt = MONO_MARSHAL_COPY_OUT;
3886 else if (mt == MONO_MARSHAL_SERIALIZE) {
3887 complex_count++;
3888 if (ptype->byref) complex_out_count++;
3889 }
3890 marshal_types [i] = mt;
3891 }
3892
3893 if (sig->ret->type != MONO_TYPE_VOID) {
3894 ret_marshal_type = mono_get_xdomain_marshal_type (sig->ret);
3895 ret_class = mono_class_from_mono_type (sig->ret);
3896 copy_return = ret_marshal_type != MONO_MARSHAL_SERIALIZE;
3897 }
3898
3899 /* Locals */
3900
3901 if (complex_count > 0)
3902 loc_array = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
3903 loc_serialized_data = mono_mb_add_local (mb, &byte_array_class->byval_arg);
3904 loc_real_proxy = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
3905 if (copy_return)
3906 loc_return = mono_mb_add_local (mb, sig->ret);
3907 loc_old_domainid = mono_mb_add_local (mb, &mono_defaults.int32_class->byval_arg);
3908 loc_domainid = mono_mb_add_local (mb, &mono_defaults.int32_class->byval_arg);
3909 loc_serialized_exc = mono_mb_add_local (mb, &byte_array_class->byval_arg);
3910 loc_context = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
3911
3912 /* Save thread domain data */
3913
3914 mono_mb_emit_icall (mb, mono_context_get);
3915 mono_mb_emit_byte (mb, CEE_DUP);
3916 mono_mb_emit_stloc (mb, loc_context);
3917
3918 /* If the thread is not running in the default context, it needs to go
3919 * through the whole remoting sink, since the context is going to change
3920 */
3921 mono_mb_emit_managed_call (mb, method_needs_context_sink, NULL);
3922 pos = mono_mb_emit_short_branch (mb, CEE_BRTRUE_S);
3923
3924 /* Another case in which the fast path can't be used: when the target domain
3925 * has a different image for the same assembly.
3926 */
3927
3928 /* Get the target domain id */
3929
3930 mono_mb_emit_ldarg (mb, 0);
3931 mono_mb_emit_ldflda (mb, G_STRUCT_OFFSET (MonoTransparentProxy, rp));
3932 mono_mb_emit_byte (mb, CEE_LDIND_REF);
3933 mono_mb_emit_byte (mb, CEE_DUP);
3934 mono_mb_emit_stloc (mb, loc_real_proxy);
3935
3936 mono_mb_emit_ldflda (mb, G_STRUCT_OFFSET (MonoRealProxy, target_domain_id));
3937 mono_mb_emit_byte (mb, CEE_LDIND_I4);
3938 mono_mb_emit_stloc (mb, loc_domainid);
3939
3940 /* Check if the target domain has the same image for the required assembly */
3941
3942 mono_mb_emit_ldloc (mb, loc_domainid);
3943 mono_mb_emit_ptr (mb, method->klass->image);
3944 mono_mb_emit_icall (mb, mono_marshal_check_domain_image);
3945 pos_dispatch = mono_mb_emit_short_branch (mb, CEE_BRTRUE_S);
3946
3947 /* Use the whole remoting sink to dispatch this message */
3948
3949 mono_mb_patch_short_branch (mb, pos);
3950
3951 mono_mb_emit_ldarg (mb, 0);
3952 for (i = 0; i < sig->param_count; i++)
3953 mono_mb_emit_ldarg (mb, i + 1);
3954
3955 mono_mb_emit_managed_call (mb, mono_marshal_get_remoting_invoke (method), NULL);
3956 mono_mb_emit_byte (mb, CEE_RET);
3957 mono_mb_patch_short_branch (mb, pos_dispatch);
3958
3959 /* Create the array that will hold the parameters to be serialized */
3960
3961 if (complex_count > 0) {
3962 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 */
3963 mono_mb_emit_op (mb, CEE_NEWARR, mono_defaults.object_class);
3964
3965 j = 0;
3966 for (i = 0; i < sig->param_count; i++) {
3967 MonoClass *pclass;
3968 if (marshal_types [i] != MONO_MARSHAL_SERIALIZE) continue;
3969 pclass = mono_class_from_mono_type (sig->params[i]);
3970 mono_mb_emit_byte (mb, CEE_DUP);
3971 mono_mb_emit_icon (mb, j);
3972 mono_mb_emit_ldarg (mb, i + 1); /* 0=this */
3973 if (sig->params[i]->byref) {
3974 if (pclass->valuetype)
3975 mono_mb_emit_op (mb, CEE_LDOBJ, pclass);
3976 else
3977 mono_mb_emit_byte (mb, CEE_LDIND_REF);
3978 }
3979 if (pclass->valuetype)
3980 mono_mb_emit_op (mb, CEE_BOX, pclass);
3981 mono_mb_emit_byte (mb, CEE_STELEM_REF);
3982 j++;
3983 }
3984 mono_mb_emit_stloc (mb, loc_array);
3985
3986 /* Serialize parameters */
3987
3988 mono_mb_emit_ldloc (mb, loc_array);
3989 mono_mb_emit_managed_call (mb, method_rs_serialize, NULL);
3990 mono_mb_emit_stloc (mb, loc_serialized_data);
3991 } else {
3992 mono_mb_emit_byte (mb, CEE_LDNULL);
3993 mono_mb_emit_managed_call (mb, method_rs_serialize, NULL);
3994 mono_mb_emit_stloc (mb, loc_serialized_data);
3995 }
3996
3997 /* switch domain */
3998
3999 mono_mb_emit_ldloc (mb, loc_domainid);
4000 mono_mb_emit_byte (mb, CEE_LDC_I4_1);
4001 mono_marshal_emit_switch_domain (mb);
4002 mono_mb_emit_stloc (mb, loc_old_domainid);
4003
4004 /* Load the arguments */
4005
4006 mono_mb_emit_ldloc (mb, loc_real_proxy);
4007 mono_mb_emit_ldloc_addr (mb, loc_serialized_data);
4008 mono_mb_emit_ldloc_addr (mb, loc_serialized_exc);
4009
4010 copy_locals_base = mb->locals;
4011 for (i = 0; i < sig->param_count; i++) {
4012 switch (marshal_types [i]) {
4013 case MONO_MARSHAL_SERIALIZE:
4014 continue;
4015 case MONO_MARSHAL_COPY: {
4016 mono_mb_emit_ldarg (mb, i+1);
4017 if (sig->params [i]->byref) {
4018 /* make a local copy of the byref parameter. The real parameter
4019 * will be updated after the xdomain call
4020 */
4021 MonoClass *pclass = mono_class_from_mono_type (sig->params [i]);
4022 int copy_local = mono_mb_add_local (mb, &(pclass->byval_arg));
4023 mono_mb_emit_byte (mb, CEE_LDIND_REF);
4024 mono_mb_emit_stloc (mb, copy_local);
4025 mono_mb_emit_ldloc_addr (mb, copy_local);
4026 }
4027 break;
4028 }
4029 case MONO_MARSHAL_COPY_OUT:
4030 case MONO_MARSHAL_NONE:
4031 mono_mb_emit_ldarg (mb, i+1);
4032 break;
4033 }
4034 }
4035
4036 /* Make the call to the invoke wrapper in the target domain */
4037
4038 xdomain_method = mono_marshal_get_xappdomain_dispatch (method, marshal_types, complex_count, complex_out_count, ret_marshal_type);
4039 mono_marshal_emit_load_domain_method (mb, xdomain_method);
4040 mono_mb_emit_calli (mb, mono_method_signature (xdomain_method));
4041
4042 if (copy_return)
4043 mono_mb_emit_stloc (mb, loc_return);
4044
4045 /* Switch domain */
4046
4047 mono_mb_emit_ldloc (mb, loc_old_domainid);
4048 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
4049 mono_marshal_emit_switch_domain (mb);
4050 mono_mb_emit_byte (mb, CEE_POP);
4051
4052 /* Restore thread domain data */
4053
4054 mono_mb_emit_ldloc (mb, loc_context);
4055 mono_mb_emit_icall (mb, mono_context_set);
4056
4057 /* if (loc_serialized_exc != null) ... */
4058
4059 mono_mb_emit_ldloc (mb, loc_serialized_exc);
4060 pos_noex = mono_mb_emit_short_branch (mb, CEE_BRFALSE_S);
4061
4062 mono_mb_emit_ldloc (mb, loc_serialized_exc);
4063 mono_marshal_emit_xdomain_copy_value (mb, byte_array_class);
4064 mono_mb_emit_managed_call (mb, method_rs_deserialize, NULL);
4065 mono_mb_emit_op (mb, CEE_CASTCLASS, mono_defaults.exception_class);
4066 mono_mb_emit_managed_call (mb, method_exc_fixexc, NULL);
4067 mono_mb_emit_byte (mb, CEE_THROW);
4068 mono_mb_patch_addr_s (mb, pos_noex, mb->pos - pos_noex - 1);
4069
4070 /* copy back non-serialized output parameters */
4071
4072 j = 0;
4073 for (i = 0; i < sig->param_count; i++) {
4074 if (!sig->params [i]->byref || marshal_types [i] != MONO_MARSHAL_COPY) continue;
4075 mono_mb_emit_ldarg (mb, i + 1);
4076 mono_mb_emit_ldloc (mb, copy_locals_base + (j++));
4077 mono_marshal_emit_xdomain_copy_value (mb, mono_class_from_mono_type (sig->params [i]));
4078 mono_mb_emit_byte (mb, CEE_STIND_REF);
4079 }
4080
4081 /* Deserialize out parameters */
4082
4083 if (complex_out_count > 0) {
4084 mono_mb_emit_ldloc (mb, loc_serialized_data);
4085 mono_marshal_emit_xdomain_copy_value (mb, byte_array_class);
4086 mono_mb_emit_managed_call (mb, method_rs_deserialize, NULL);
4087 mono_mb_emit_stloc (mb, loc_array);
4088
4089 /* Copy back output parameters and return type */
4090
4091 j = 0;
4092 for (i = 0; i < sig->param_count; i++) {
4093 if (marshal_types [i] != MONO_MARSHAL_SERIALIZE) continue;
4094 if (sig->params[i]->byref) {
4095 MonoClass *pclass = mono_class_from_mono_type (sig->params [i]);
4096 mono_mb_emit_ldarg (mb, i + 1);
4097 mono_mb_emit_ldloc (mb, loc_array);
4098 mono_mb_emit_icon (mb, j);
4099 mono_mb_emit_byte (mb, CEE_LDELEM_REF);
4100 if (pclass->valuetype) {
4101 mono_mb_emit_op (mb, CEE_UNBOX, pclass);
4102 mono_mb_emit_op (mb, CEE_LDOBJ, pclass);
4103 mono_mb_emit_op (mb, CEE_STOBJ, pclass);
4104 } else {
4105 if (pclass != mono_defaults.object_class)
4106 mono_mb_emit_op (mb, CEE_CASTCLASS, pclass);
4107 mono_mb_emit_byte (mb, CEE_STIND_REF);
4108 }
4109 }
4110 j++;
4111 }
4112
4113 if (ret_marshal_type == MONO_MARSHAL_SERIALIZE) {
4114 mono_mb_emit_ldloc (mb, loc_array);
4115 mono_mb_emit_icon (mb, complex_count);
4116 mono_mb_emit_byte (mb, CEE_LDELEM_REF);
4117 if (ret_class->valuetype) {
4118 mono_mb_emit_op (mb, CEE_UNBOX, ret_class);
4119 mono_mb_emit_op (mb, CEE_LDOBJ, ret_class);
4120 }
4121 }
4122 } else if (ret_marshal_type == MONO_MARSHAL_SERIALIZE) {
4123 mono_mb_emit_ldloc (mb, loc_serialized_data);
4124 mono_marshal_emit_xdomain_copy_value (mb, byte_array_class);
4125 mono_mb_emit_managed_call (mb, method_rs_deserialize, NULL);
4126 if (ret_class->valuetype) {
4127 mono_mb_emit_op (mb, CEE_UNBOX, ret_class);
4128 mono_mb_emit_op (mb, CEE_LDOBJ, ret_class);
4129 } else if (ret_class != mono_defaults.object_class) {
4130 mono_mb_emit_op (mb, CEE_CASTCLASS, ret_class);
4131 }
4132 } else {
4133 mono_mb_emit_ldloc (mb, loc_serialized_data);
4134 mono_mb_emit_byte (mb, CEE_DUP);
4135 pos = mono_mb_emit_short_branch (mb, CEE_BRFALSE_S);
4136 mono_marshal_emit_xdomain_copy_value (mb, byte_array_class);
4137
4138 mono_mb_patch_addr_s (mb, pos, mb->pos - (pos + 1));
4139 mono_mb_emit_managed_call (mb, method_rs_deserialize, NULL);
4140 mono_mb_emit_byte (mb, CEE_POP);
4141 }
4142
4143 if (copy_return) {
4144 mono_mb_emit_ldloc (mb, loc_return);
4145 if (ret_marshal_type == MONO_MARSHAL_COPY)
4146 mono_marshal_emit_xdomain_copy_value (mb, ret_class);
4147 }
4148
4149 mono_mb_emit_byte (mb, CEE_RET);
4150
4151 res = mono_remoting_mb_create_and_cache (method, mb, sig, sig->param_count + 16);
4152 mono_mb_free (mb);
4153
4154 return res;
4155 }
4156
4157 MonoMethod *
4158 mono_marshal_get_remoting_invoke_for_target (MonoMethod *method, MonoRemotingTarget target_type)
4159 {
4160 if (target_type == MONO_REMOTING_TARGET_APPDOMAIN)
4161 return mono_marshal_get_xappdomain_invoke (method);
4162 else if (target_type == MONO_REMOTING_TARGET_COMINTEROP)
4163 return cominterop_get_invoke (method);
4164 else
4165 return mono_marshal_get_remoting_invoke (method);
4166 }
4167
4168 G_GNUC_UNUSED static gpointer
4169 mono_marshal_load_remoting_wrapper (MonoRealProxy *rp, MonoMethod *method)
4170 {
4171 if (rp->target_domain_id != -1)
4172 return mono_compile_method (mono_marshal_get_xappdomain_invoke (method));
4173 else
4174 return mono_compile_method (mono_marshal_get_remoting_invoke (method));
4175 }
4176
4177 MonoMethod *
4178 mono_marshal_get_remoting_invoke_with_check (MonoMethod *method)
4179 {
4180 MonoMethodSignature *sig;
4181 MonoMethodBuilder *mb;
4182 MonoMethod *res, *native;
4183 int i, pos, pos_rem;
4184
4185 g_assert (method);
4186
4187 if (method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)
4188 return method;
4189
4190 sig = signature_no_pinvoke (method);
4191
4192 /* we cant remote methods without this pointer */
4193 g_assert (sig->hasthis);
4194
4195 if ((res = mono_marshal_remoting_find_in_cache (method, MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)))
4196 return res;
4197
4198 mb = mono_mb_new (method->klass, method->name, MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK);
4199
4200 for (i = 0; i <= sig->param_count; i++)
4201 mono_mb_emit_ldarg (mb, i);
4202
4203 mono_mb_emit_ldarg (mb, 0);
4204 pos = mono_mb_emit_proxy_check (mb, CEE_BNE_UN);
4205
4206 if (mono_marshal_supports_fast_xdomain (method)) {
4207 mono_mb_emit_ldarg (mb, 0);
4208 pos_rem = mono_mb_emit_xdomain_check (mb, CEE_BEQ);
4209
4210 /* wrapper for cross app domain calls */
4211 native = mono_marshal_get_xappdomain_invoke (method);
4212 mono_mb_emit_managed_call (mb, native, mono_method_signature (native));
4213 mono_mb_emit_byte (mb, CEE_RET);
4214
4215 mono_mb_patch_addr (mb, pos_rem, mb->pos - (pos_rem + 4));
4216 }
4217 /* wrapper for normal remote calls */
4218 native = mono_marshal_get_remoting_invoke (method);
4219 mono_mb_emit_managed_call (mb, native, mono_method_signature (native));
4220 mono_mb_emit_byte (mb, CEE_RET);
4221
4222 /* not a proxy */
4223 mono_mb_patch_branch (mb, pos);
4224 mono_mb_emit_managed_call (mb, method, mono_method_signature (method));
4225 mono_mb_emit_byte (mb, CEE_RET);
4226
4227 res = mono_remoting_mb_create_and_cache (method, mb, sig, sig->param_count + 16);
4228 mono_mb_free (mb);
4229
4230 return res;
4231 }
4232
4233 /*
4234 * the returned method invokes all methods in a multicast delegate
4235 */
4236 MonoMethod *
4237 mono_marshal_get_delegate_invoke (MonoMethod *method)
4238 {
4239 MonoMethodSignature *sig, *static_sig;
4240 int i;
4241 MonoMethodBuilder *mb;
4242 MonoMethod *res;
4243 GHashTable *cache;
4244 int pos0, pos1;
4245 char *name;
4246
4247 g_assert (method && method->klass->parent == mono_defaults.multicastdelegate_class &&
4248 !strcmp (method->name, "Invoke"));
4249
4250 sig = signature_no_pinvoke (method);
4251
4252 cache = method->klass->image->delegate_invoke_cache;
4253 if ((res = mono_marshal_find_in_cache (cache, sig)))
4254 return res;
4255
4256 static_sig = signature_dup (method->klass->image, sig);
4257 static_sig->hasthis = 0;
4258
4259 name = mono_signature_to_name (sig, "invoke");
4260 mb = mono_mb_new (mono_defaults.multicastdelegate_class, name, MONO_WRAPPER_DELEGATE_INVOKE);
4261 g_free (name);
4262
4263 /* allocate local 0 (object) */
4264 mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
4265
4266 g_assert (sig->hasthis);
4267
4268 /*
4269 * if (prev != null)
4270 * prev.Invoke( args .. );
4271 * return this.<target>( args .. );
4272 */
4273
4274 /* this wrapper can be used in unmanaged-managed transitions */
4275 emit_thread_interrupt_checkpoint (mb);
4276
4277 /* get this->prev */
4278 mono_mb_emit_ldarg (mb, 0);
4279 mono_mb_emit_ldflda (mb, G_STRUCT_OFFSET (MonoMulticastDelegate, prev));
4280 mono_mb_emit_byte (mb, CEE_LDIND_REF);
4281
4282 /* if prev != null */
4283 pos0 = mono_mb_emit_branch (mb, CEE_BRFALSE);
4284
4285 /* then recurse */
4286
4287 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
4288 mono_mb_emit_byte (mb, CEE_MONO_NOT_TAKEN);
4289
4290 mono_mb_emit_ldarg (mb, 0);
4291 mono_mb_emit_ldflda (mb, G_STRUCT_OFFSET (MonoMulticastDelegate, prev));
4292 mono_mb_emit_byte (mb, CEE_LDIND_REF);
4293 for (i = 0; i < sig->param_count; i++)
4294 mono_mb_emit_ldarg (mb, i + 1);
4295 mono_mb_emit_managed_call (mb, method, mono_method_signature (method));
4296 if (sig->ret->type != MONO_TYPE_VOID)
4297 mono_mb_emit_byte (mb, CEE_POP);
4298
4299 /* continued or prev == null */
4300 mono_mb_patch_branch (mb, pos0);
4301
4302 /* get this->target */
4303 mono_mb_emit_ldarg (mb, 0);
4304 mono_mb_emit_ldflda (mb, G_STRUCT_OFFSET (MonoDelegate, target));
4305 mono_mb_emit_byte (mb, CEE_LDIND_REF);
4306 mono_mb_emit_stloc (mb, 0);
4307
4308 /* if target != null */
4309 mono_mb_emit_ldloc (mb, 0);
4310 pos0 = mono_mb_emit_branch (mb, CEE_BRFALSE);
4311
4312 /* then call this->method_ptr nonstatic */
4313 mono_mb_emit_ldloc (mb, 0);
4314 for (i = 0; i < sig->param_count; ++i)
4315 mono_mb_emit_ldarg (mb, i + 1);
4316 mono_mb_emit_ldarg (mb, 0);
4317 mono_mb_emit_ldflda (mb, G_STRUCT_OFFSET (MonoDelegate, method_ptr));
4318 mono_mb_emit_byte (mb, CEE_LDIND_I );
4319 mono_mb_emit_op (mb, CEE_CALLI, sig);
4320
4321 pos1 = mono_mb_emit_branch (mb, CEE_BR);
4322
4323 /* else [target == null] call this->method_ptr static */
4324 mono_mb_patch_branch (mb, pos0);
4325
4326 for (i = 0; i < sig->param_count; ++i)
4327 mono_mb_emit_ldarg (mb, i + 1);
4328 mono_mb_emit_ldarg (mb, 0);
4329 mono_mb_emit_ldflda (mb, G_STRUCT_OFFSET (MonoDelegate, method_ptr));
4330 mono_mb_emit_byte (mb, CEE_LDIND_I );
4331 mono_mb_emit_op (mb, CEE_CALLI, static_sig);
4332
4333 /* return */
4334 mono_mb_patch_branch (mb, pos1);
4335 mono_mb_emit_byte (mb, CEE_RET);
4336
4337 res = mono_mb_create_and_cache (cache, sig,
4338 mb, sig, sig->param_count + 16);
4339 mono_mb_free (mb);
4340
4341 return res;
4342 }
4343
4344 /*
4345 * signature_dup_add_this:
4346 *
4347 * Make a copy of @sig, adding an explicit this argument.
4348 */
4349 static MonoMethodSignature*
4350 signature_dup_add_this (MonoMethodSignature *sig, MonoClass *klass)
4351 {
4352 MonoMethodSignature *res;
4353 int i;
4354
4355 res = mono_metadata_signature_alloc (klass->image, sig->param_count + 1);
4356 memcpy (res, sig, sizeof (MonoMethodSignature));
4357 res->param_count = sig->param_count + 1;
4358 res->hasthis = FALSE;
4359 for (i = sig->param_count - 1; i >= 0; i --)
4360 res->params [i + 1] = sig->params [i];
4361 res->params [0] = &mono_ptr_class_get (&klass->byval_arg)->byval_arg;
4362
4363 return res;
4364 }
4365
4366 typedef struct {
4367 MonoMethod *ctor;
4368 MonoMethodSignature *sig;
4369 } CtorSigPair;
4370
4371
4372
4373 /*
4374 * generates IL code for the runtime invoke function
4375 * MonoObject *runtime_invoke (MonoObject *this, void **params, MonoObject **exc, void* method)
4376 *
4377 * we also catch exceptions if exc != null
4378 */
4379 MonoMethod *
4380 mono_marshal_get_runtime_invoke (MonoMethod *method)
4381 {
4382 MonoMethodSignature *sig, *csig, *callsig;
4383 MonoExceptionClause *clause;
4384 MonoMethodHeader *header;
4385 MonoMethodBuilder *mb;
4386 GHashTable *cache = NULL;
4387 MonoClass *target_klass;
4388 MonoMethod *res = NULL;
4389 GSList *item;
4390 static MonoString *string_dummy = NULL;
4391 static MonoMethodSignature *dealy_abort_sig = NULL;
4392 int i, pos, posna;
4393 char *name;
4394
4395 g_assert (method);
4396
4397 target_klass = method->klass;
4398
4399 mono_marshal_lock ();
4400
4401 if (method->string_ctor) {
4402 static GSList *strsig_list = NULL;
4403 CtorSigPair *cs;
4404
4405 callsig = NULL;
4406 for (item = strsig_list; item; item = item->next) {
4407 cs = item->data;
4408 if (mono_metadata_signature_equal (mono_method_signature (method), mono_method_signature (cs->ctor))) {
4409 callsig = cs->sig;
4410 break;
4411 }
4412 }
4413 if (!callsig) {
4414 callsig = signature_dup (method->klass->image, mono_method_signature (method));
4415 callsig->ret = &mono_defaults.string_class->byval_arg;
4416 cs = g_new (CtorSigPair, 1);
4417 cs->sig = callsig;
4418 cs->ctor = method;
4419 strsig_list = g_slist_prepend (strsig_list, cs);
4420 }
4421 } else {
4422 if (method->klass->valuetype && mono_method_signature (method)->hasthis) {
4423 /*
4424 * Valuetype methods receive a managed pointer as the this argument.
4425 * Create a new signature to reflect this.
4426 */
4427 callsig = signature_dup_add_this (mono_method_signature (method), method->klass);
4428 } else {
4429 callsig = mono_method_signature (method);
4430 }
4431 }
4432
4433 cache = method->klass->image->runtime_invoke_cache;
4434
4435 /* from mono_marshal_find_in_cache */
4436 res = g_hash_table_lookup (cache, callsig);
4437 mono_marshal_unlock ();
4438
4439 if (res) {
4440 return res;
4441 }
4442
4443 if (!dealy_abort_sig) {
4444 dealy_abort_sig = mono_metadata_signature_alloc (mono_defaults.corlib, 0);
4445 dealy_abort_sig->ret = &mono_defaults.void_class->byval_arg;
4446 dealy_abort_sig->pinvoke = 0;
4447 }
4448
4449 target_klass = mono_defaults.object_class;
4450
4451 /* to make it work with our special string constructors */
4452 if (!string_dummy) {
4453 MONO_GC_REGISTER_ROOT (string_dummy);
4454 string_dummy = mono_string_new_wrapper ("dummy");
4455 }
4456
4457 sig = mono_method_signature (method);
4458
4459 csig = mono_metadata_signature_alloc (method->klass->image, 4);
4460
4461 csig->ret = &mono_defaults.object_class->byval_arg;
4462 if (method->klass->valuetype && mono_method_signature (method)->hasthis)
4463 csig->params [0] = callsig->params [0];
4464 else
4465 csig->params [0] = &mono_defaults.object_class->byval_arg;
4466 csig->params [1] = &mono_defaults.int_class->byval_arg;
4467 csig->params [2] = &mono_defaults.int_class->byval_arg;
4468 csig->params [3] = &mono_defaults.int_class->byval_arg;
4469
4470 name = mono_signature_to_name (callsig, "runtime_invoke");
4471 mb = mono_mb_new (target_klass, name, MONO_WRAPPER_RUNTIME_INVOKE);
4472 g_free (name);
4473
4474 /* allocate local 0 (object) tmp */
4475 mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
4476 /* allocate local 1 (object) exc */
4477 mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
4478
4479 /* cond set *exc to null */
4480 mono_mb_emit_byte (mb, CEE_LDARG_2);
4481 mono_mb_emit_byte (mb, CEE_BRFALSE_S);
4482 mono_mb_emit_byte (mb, 3);
4483 mono_mb_emit_byte (mb, CEE_LDARG_2);
4484 mono_mb_emit_byte (mb, CEE_LDNULL);
4485 mono_mb_emit_byte (mb, CEE_STIND_REF);
4486
4487 emit_thread_force_interrupt_checkpoint (mb);
4488
4489 if (sig->hasthis) {
4490 if (method->string_ctor) {
4491 mono_mb_emit_ptr (mb, string_dummy);
4492 } else {
4493 mono_mb_emit_ldarg (mb, 0);
4494 }
4495 }
4496
4497 for (i = 0; i < sig->param_count; i++) {
4498 MonoType *t = sig->params [i];
4499 int type;
4500
4501 mono_mb_emit_ldarg (mb, 1);
4502 if (i) {
4503 mono_mb_emit_icon (mb, sizeof (gpointer) * i);
4504 mono_mb_emit_byte (mb, CEE_ADD);
4505 }
4506 mono_mb_emit_byte (mb, CEE_LDIND_I);
4507
4508 if (t->byref)
4509 continue;
4510
4511 type = sig->params [i]->type;
4512 handle_enum:
4513 switch (type) {
4514 case MONO_TYPE_I1:
4515 case MONO_TYPE_BOOLEAN:
4516 case MONO_TYPE_U1:
4517 case MONO_TYPE_I2:
4518 case MONO_TYPE_U2:
4519 case MONO_TYPE_CHAR:
4520 case MONO_TYPE_I:
4521 case MONO_TYPE_U:
4522 case MONO_TYPE_I4:
4523 case MONO_TYPE_U4:
4524 case MONO_TYPE_R4:
4525 case MONO_TYPE_R8:
4526 case MONO_TYPE_I8:
4527 case MONO_TYPE_U8:
4528 mono_mb_emit_byte (mb, mono_type_to_ldind (sig->params [i]));
4529 break;
4530 case MONO_TYPE_STRING:
4531 case MONO_TYPE_CLASS:
4532 case MONO_TYPE_ARRAY:
4533 case MONO_TYPE_PTR:
4534 case MONO_TYPE_SZARRAY:
4535 case MONO_TYPE_OBJECT:
4536 /* do nothing */
4537 break;
4538 case MONO_TYPE_GENERICINST:
4539 if (!mono_type_generic_inst_is_valuetype (sig->params [i])) {
4540 /* do nothing */
4541 break;
4542 }
4543
4544 /* fall through */
4545 case MONO_TYPE_VALUETYPE:
4546 if (t->data.klass->enumtype) {
4547 type = t->data.klass->enum_basetype->type;
4548 goto handle_enum;
4549 }
4550 if (mono_class_is_nullable (mono_class_from_mono_type (sig->params [i]))) {
4551 /* Need to convert a boxed vtype to an mp to a Nullable struct */
4552 mono_mb_emit_op (mb, CEE_UNBOX, mono_class_from_mono_type (sig->params [i]));
4553 mono_mb_emit_op (mb, CEE_LDOBJ, mono_class_from_mono_type (sig->params [i]));
4554 } else {
4555 mono_mb_emit_op (mb, CEE_LDOBJ, mono_class_from_mono_type (sig->params [i]));
4556 }
4557 break;
4558 default:
4559 g_assert_not_reached ();
4560 }
4561 }
4562
4563 mono_mb_emit_ldarg (mb, 3);
4564 mono_mb_emit_calli (mb, callsig);
4565
4566 if (sig->ret->byref) {
4567 /* fixme: */
4568 g_assert_not_reached ();
4569 }
4570
4571
4572 switch (sig->ret->type) {
4573 case MONO_TYPE_VOID:
4574 if (!method->string_ctor)
4575 mono_mb_emit_byte (mb, CEE_LDNULL);
4576 break;
4577 case MONO_TYPE_BOOLEAN:
4578 case MONO_TYPE_CHAR:
4579 case MONO_TYPE_I1:
4580 case MONO_TYPE_U1:
4581 case MONO_TYPE_I2:
4582 case MONO_TYPE_U2:
4583 case MONO_TYPE_I4:
4584 case MONO_TYPE_U4:
4585 case MONO_TYPE_I:
4586 case MONO_TYPE_U:
4587 case MONO_TYPE_R4:
4588 case MONO_TYPE_R8:
4589 case MONO_TYPE_I8:
4590 case MONO_TYPE_U8:
4591 case MONO_TYPE_VALUETYPE:
4592 case MONO_TYPE_TYPEDBYREF:
4593 case MONO_TYPE_GENERICINST:
4594 /* box value types */
4595 mono_mb_emit_op (mb, CEE_BOX, mono_class_from_mono_type (sig->ret));
4596 break;
4597 case MONO_TYPE_STRING:
4598 case MONO_TYPE_CLASS:
4599 case MONO_TYPE_ARRAY:
4600 case MONO_TYPE_SZARRAY:
4601 case MONO_TYPE_OBJECT:
4602 /* nothing to do */
4603 break;
4604 case MONO_TYPE_PTR:
4605 default:
4606 g_assert_not_reached ();
4607 }
4608
4609 mono_mb_emit_stloc (mb, 0);
4610
4611 pos = mono_mb_emit_branch (mb, CEE_LEAVE);
4612
4613 mono_loader_lock ();
4614 clause = mono_mempool_alloc0 (target_klass->image->mempool, sizeof (MonoExceptionClause));
4615 mono_loader_unlock ();
4616 clause->flags = MONO_EXCEPTION_CLAUSE_FILTER;
4617 clause->try_len = mb->pos;
4618
4619 /* filter code */
4620 clause->data.filter_offset = mb->pos;
4621
4622 mono_mb_emit_byte (mb, CEE_POP);
4623 mono_mb_emit_byte (mb, CEE_LDARG_2);
4624 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
4625 mono_mb_emit_byte (mb, CEE_PREFIX1);
4626 mono_mb_emit_byte (mb, CEE_CGT_UN);
4627 mono_mb_emit_byte (mb, CEE_PREFIX1);
4628 mono_mb_emit_byte (mb, CEE_ENDFILTER);
4629
4630 clause->handler_offset = mb->pos;
4631
4632 /* handler code */
4633 /* store exception */
4634 mono_mb_emit_stloc (mb, 1);
4635
4636 mono_mb_emit_byte (mb, CEE_LDARG_2);
4637 mono_mb_emit_ldloc (mb, 1);
4638 mono_mb_emit_byte (mb, CEE_STIND_REF);
4639
4640 mono_mb_emit_byte (mb, CEE_LDNULL);
4641 mono_mb_emit_stloc (mb, 0);
4642
4643 /* Check for the abort exception */
4644 mono_mb_emit_ldloc (mb, 1);
4645 mono_mb_emit_op (mb, CEE_ISINST, mono_defaults.threadabortexception_class);
4646 posna = mono_mb_emit_short_branch (mb, CEE_BRFALSE_S);
4647
4648 /* Delay the abort exception */
4649 mono_mb_emit_native_call (mb, dealy_abort_sig, ves_icall_System_Threading_Thread_ResetAbort);
4650
4651 mono_mb_patch_short_branch (mb, posna);
4652 mono_mb_emit_branch (mb, CEE_LEAVE);
4653
4654 clause->handler_len = mb->pos - clause->handler_offset;
4655
4656 /* return result */
4657 mono_mb_patch_branch (mb, pos);
4658 mono_mb_emit_ldloc (mb, 0);
4659 mono_mb_emit_byte (mb, CEE_RET);
4660
4661 /* taken from mono_mb_create_and_cache */
4662 mono_loader_lock ();
4663 mono_marshal_lock ();
4664
4665 res = g_hash_table_lookup (cache, callsig);
4666 /* Somebody may have created it before us */
4667 if (!res) {
4668 res = mono_mb_create_method (mb, csig, sig->param_count + 16);
4669 g_hash_table_insert (cache, callsig, res);
4670 g_hash_table_insert (wrapper_hash, res, callsig);
4671 }
4672
4673 mono_marshal_unlock ();
4674 mono_loader_unlock ();
4675 /* end mono_mb_create_and_cache */
4676
4677 mono_mb_free (mb);
4678
4679 header = ((MonoMethodNormal *)res)->header;
4680 header->num_clauses = 1;
4681 header->clauses = clause;
4682
4683 return res;
4684 }
4685
4686 static void
4687 mono_mb_emit_auto_layout_exception (MonoMethodBuilder *mb, MonoClass *klass)
4688 {
4689 char *msg = g_strdup_printf ("The type `%s.%s' layout needs to be Sequential or Explicit",
4690 klass->name_space, klass->name);
4691
4692 mono_mb_emit_exception_marshal_directive (mb, msg);
4693 }
4694
4695 /*
4696 * mono_marshal_get_ldfld_remote_wrapper:
4697 * @klass: The return type
4698 *
4699 * This method generates a wrapper for calling mono_load_remote_field_new with
4700 * the appropriate return type.
4701 */
4702 MonoMethod *
4703 mono_marshal_get_ldfld_remote_wrapper (MonoClass *klass)
4704 {
4705 MonoMethodSignature *sig, *csig;
4706 MonoMethodBuilder *mb;
4707 MonoMethod *res;
4708 GHashTable *cache;
4709 char *name;
4710
4711 cache = klass->image->ldfld_remote_wrapper_cache;
4712 if ((res = mono_marshal_find_in_cache (cache, klass)))
4713 return res;
4714
4715 /*
4716 * This wrapper is similar to an icall wrapper but all the wrappers
4717 * call the same C function, but with a different signature.
4718 */
4719 name = g_strdup_printf ("__mono_load_remote_field_new_wrapper_%s.%s", klass->name_space, klass->name);
4720 mb = mono_mb_new (mono_defaults.object_class, name, MONO_WRAPPER_LDFLD_REMOTE);
4721 g_free (name);
4722
4723 mb->method->save_lmf = 1;
4724
4725 sig = mono_metadata_signature_alloc (mono_defaults.corlib, 3);
4726 sig->params [0] = &mono_defaults.object_class->byval_arg;
4727 sig->params [1] = &mono_defaults.int_class->byval_arg;
4728 sig->params [2] = &mono_defaults.int_class->byval_arg;
4729 sig->ret = &klass->this_arg;
4730
4731 mono_mb_emit_ldarg (mb, 0);
4732 mono_mb_emit_ldarg (mb, 1);
4733 mono_mb_emit_ldarg (mb, 2);
4734
4735 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 3);
4736 csig->params [0] = &mono_defaults.object_class->byval_arg;
4737 csig->params [1] = &mono_defaults.int_class->byval_arg;
4738 csig->params [2] = &mono_defaults.int_class->byval_arg;
4739 csig->ret = &klass->this_arg;
4740 csig->pinvoke = 1;
4741
4742 mono_mb_emit_native_call (mb, csig, mono_load_remote_field_new);
4743 emit_thread_interrupt_checkpoint (mb);
4744
4745 mono_mb_emit_byte (mb, CEE_RET);
4746
4747 res = mono_mb_create_and_cache (cache, klass,
4748 mb, sig, sig->param_count + 16);
4749 mono_mb_free (mb);
4750
4751 return res;
4752 }
4753
4754 /*
4755 * mono_marshal_get_ldfld_wrapper:
4756 * @type: the type of the field
4757 *
4758 * This method generates a function which can be use to load a field with type
4759 * @type from an object. The generated function has the following signature:
4760 * <@type> ldfld_wrapper (MonoObject *this, MonoClass *class, MonoClassField *field, int offset)
4761 */
4762 MonoMethod *
4763 mono_marshal_get_ldfld_wrapper (MonoType *type)
4764 {
4765 MonoMethodSignature *sig;
4766 MonoMethodBuilder *mb;
4767 MonoMethod *res;
4768 MonoClass *klass;
4769 GHashTable *cache;
4770 char *name;
4771 int t, pos0, pos1 = 0;
4772
4773 type = mono_type_get_underlying_type (type);
4774
4775 t = type->type;
4776
4777 if (!type->byref) {
4778 if (type->type == MONO_TYPE_SZARRAY) {
4779 klass = mono_defaults.array_class;
4780 } else if (type->type == MONO_TYPE_VALUETYPE) {
4781 klass = type->data.klass;
4782 } else if (t == MONO_TYPE_OBJECT || t == MONO_TYPE_CLASS || t == MONO_TYPE_STRING) {
4783 klass = mono_defaults.object_class;
4784 } else if (t == MONO_TYPE_PTR || t == MONO_TYPE_FNPTR) {
4785 klass = mono_defaults.int_class;
4786 } else if (t == MONO_TYPE_GENERICINST) {
4787 if (mono_type_generic_inst_is_valuetype (type))
4788 klass = mono_class_from_mono_type (type);
4789 else
4790 klass = mono_defaults.object_class;
4791 } else {
4792 klass = mono_class_from_mono_type (type);
4793 }
4794 } else {
4795 klass = mono_defaults.int_class;
4796 }
4797
4798 cache = klass->image->ldfld_wrapper_cache;
4799 if ((res = mono_marshal_find_in_cache (cache, klass)))
4800 return res;
4801
4802 /* we add the %p pointer value of klass because class names are not unique */
4803 name = g_strdup_printf ("__ldfld_wrapper_%p_%s.%s", klass, klass->name_space, klass->name);
4804 mb = mono_mb_new (mono_defaults.object_class, name, MONO_WRAPPER_LDFLD);
4805 g_free (name);
4806
4807 sig = mono_metadata_signature_alloc (mono_defaults.corlib, 4);
4808 sig->params [0] = &mono_defaults.object_class->byval_arg;
4809 sig->params [1] = &mono_defaults.int_class->byval_arg;
4810 sig->params [2] = &mono_defaults.int_class->byval_arg;
4811 sig->params [3] = &mono_defaults.int_class->byval_arg;
4812 sig->ret = &klass->byval_arg;
4813
4814 mono_mb_emit_ldarg (mb, 0);
4815 pos0 = mono_mb_emit_proxy_check (mb, CEE_BNE_UN);
4816
4817 mono_mb_emit_ldarg (mb, 0);
4818 mono_mb_emit_ldarg (mb, 1);
4819 mono_mb_emit_ldarg (mb, 2);
4820
4821 mono_mb_emit_managed_call (mb, mono_marshal_get_ldfld_remote_wrapper (klass), NULL);
4822
4823 /*
4824 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 3);
4825 csig->params [0] = &mono_defaults.object_class->byval_arg;
4826 csig->params [1] = &mono_defaults.int_class->byval_arg;
4827 csig->params [2] = &mono_defaults.int_class->byval_arg;
4828 csig->ret = &klass->this_arg;
4829 csig->pinvoke = 1;
4830
4831 mono_mb_emit_native_call (mb, csig, mono_load_remote_field_new);
4832 emit_thread_interrupt_checkpoint (mb);
4833 */
4834
4835 if (klass->valuetype) {
4836 mono_mb_emit_op (mb, CEE_UNBOX, klass);
4837 pos1 = mono_mb_emit_branch (mb, CEE_BR);
4838 } else {
4839 mono_mb_emit_byte (mb, CEE_RET);
4840 }
4841
4842
4843 mono_mb_patch_branch (mb, pos0);
4844
4845 mono_mb_emit_ldarg (mb, 0);
4846 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
4847 mono_mb_emit_byte (mb, CEE_MONO_OBJADDR);
4848 mono_mb_emit_ldarg (mb, 3);
4849 mono_mb_emit_byte (mb, CEE_ADD);
4850
4851 if (klass->valuetype)
4852 mono_mb_patch_branch (mb, pos1);
4853
4854 switch (t) {
4855 case MONO_TYPE_I1:
4856 case MONO_TYPE_U1:
4857 case MONO_TYPE_BOOLEAN:
4858 case MONO_TYPE_CHAR:
4859 case MONO_TYPE_I2:
4860 case MONO_TYPE_U2:
4861 case MONO_TYPE_I4:
4862 case MONO_TYPE_U4:
4863 case MONO_TYPE_I8:
4864 case MONO_TYPE_U8:
4865 case MONO_TYPE_R4:
4866 case MONO_TYPE_R8:
4867 case MONO_TYPE_ARRAY:
4868 case MONO_TYPE_SZARRAY:
4869 case MONO_TYPE_OBJECT:
4870 case MONO_TYPE_CLASS:
4871 case MONO_TYPE_STRING:
4872 case MONO_TYPE_I:
4873 case MONO_TYPE_U:
4874 case MONO_TYPE_PTR:
4875 case MONO_TYPE_FNPTR:
4876 mono_mb_emit_byte (mb, mono_type_to_ldind (type));
4877 break;
4878 case MONO_TYPE_VALUETYPE:
4879 g_assert (!klass->enumtype);
4880 mono_mb_emit_op (mb, CEE_LDOBJ, klass);
4881 break;
4882 case MONO_TYPE_GENERICINST:
4883 if (mono_type_generic_inst_is_valuetype (type)) {
4884 mono_mb_emit_op (mb, CEE_LDOBJ, klass);
4885 } else {
4886 mono_mb_emit_byte (mb, CEE_LDIND_REF);
4887 }
4888 break;
4889 default:
4890 g_warning ("type %x not implemented", type->type);
4891 g_assert_not_reached ();
4892 }
4893
4894 mono_mb_emit_byte (mb, CEE_RET);
4895
4896 res = mono_mb_create_and_cache (cache, klass,
4897 mb, sig, sig->param_count + 16);
4898 mono_mb_free (mb);
4899
4900 return res;
4901 }
4902
4903 /*
4904 * mono_marshal_get_ldflda_wrapper:
4905 * @type: the type of the field
4906 *
4907 * This method generates a function which can be used to load a field address
4908 * from an object. The generated function has the following signature:
4909 * gpointer ldflda_wrapper (MonoObject *this, MonoClass *class, MonoClassField *field, int offset);
4910 */
4911 MonoMethod *
4912 mono_marshal_get_ldflda_wrapper (MonoType *type)
4913 {
4914 MonoMethodSignature *sig;
4915 MonoMethodBuilder *mb;
4916 MonoMethod *res;
4917 MonoClass *klass;
4918 GHashTable *cache;
4919 char *name;
4920 int t, pos0;
4921
4922 type = mono_type_get_underlying_type (type);
4923 t = type->type;
4924
4925 if (!type->byref) {
4926 if (type->type == MONO_TYPE_SZARRAY) {
4927 klass = mono_defaults.array_class;
4928 } else if (type->type == MONO_TYPE_VALUETYPE) {
4929 klass = type->data.klass;
4930 } else if (t == MONO_TYPE_OBJECT || t == MONO_TYPE_CLASS || t == MONO_TYPE_STRING ||
4931 t == MONO_TYPE_CLASS) {
4932 klass = mono_defaults.object_class;
4933 } else if (t == MONO_TYPE_PTR || t == MONO_TYPE_FNPTR) {
4934 klass = mono_defaults.int_class;
4935 } else if (t == MONO_TYPE_GENERICINST) {
4936 if (mono_type_generic_inst_is_valuetype (type))
4937 klass = mono_class_from_mono_type (type);
4938 else
4939 klass = mono_defaults.object_class;
4940 } else {
4941 klass = mono_class_from_mono_type (type);
4942 }
4943 } else {
4944 klass = mono_defaults.int_class;
4945 }
4946
4947 cache = klass->image->ldflda_wrapper_cache;
4948 if ((res = mono_marshal_find_in_cache (cache, klass)))
4949 return res;
4950
4951 /* we add the %p pointer value of klass because class names are not unique */
4952 name = g_strdup_printf ("__ldflda_wrapper_%p_%s.%s", klass, klass->name_space, klass->name);
4953 mb = mono_mb_new (mono_defaults.object_class, name, MONO_WRAPPER_LDFLDA);
4954 g_free (name);
4955
4956 sig = mono_metadata_signature_alloc (mono_defaults.corlib, 4);
4957 sig->params [0] = &mono_defaults.object_class->byval_arg;
4958 sig->params [1] = &mono_defaults.int_class->byval_arg;
4959 sig->params [2] = &mono_defaults.int_class->byval_arg;
4960 sig->params [3] = &mono_defaults.int_class->byval_arg;
4961 sig->ret = &mono_defaults.int_class->byval_arg;
4962
4963 mono_mb_emit_ldarg (mb, 0);
4964 pos0 = mono_mb_emit_proxy_check (mb, CEE_BNE_UN);
4965
4966 /* FIXME: Only throw this if the object is in another appdomain */
4967 mono_mb_emit_exception_full (mb, "System", "InvalidOperationException", "Attempt to load field address from object in another appdomain.");
4968
4969 mono_mb_patch_branch (mb, pos0);
4970
4971 mono_mb_emit_ldarg (mb, 0);
4972 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
4973 mono_mb_emit_byte (mb, CEE_MONO_OBJADDR);
4974 mono_mb_emit_ldarg (mb, 3);
4975 mono_mb_emit_byte (mb, CEE_ADD);
4976
4977 mono_mb_emit_byte (mb, CEE_RET);
4978
4979 res = mono_mb_create_and_cache (cache, klass,
4980 mb, sig, sig->param_count + 16);
4981 mono_mb_free (mb);
4982
4983 return res;
4984 }
4985
4986 /*
4987 * mono_marshal_get_stfld_remote_wrapper:
4988 * klass: The type of the field
4989 *
4990 * This function generates a wrapper for calling mono_store_remote_field_new
4991 * with the appropriate signature.
4992 */
4993 MonoMethod *
4994 mono_marshal_get_stfld_remote_wrapper (MonoClass *klass)
4995 {
4996 MonoMethodSignature *sig, *csig;
4997 MonoMethodBuilder *mb;
4998 MonoMethod *res;
4999 GHashTable *cache;
5000 char *name;
5001
5002 cache = klass->image->stfld_remote_wrapper_cache;
5003 if ((res = mono_marshal_find_in_cache (cache, klass)))
5004 return res;
5005
5006 name = g_strdup_printf ("__mono_store_remote_field_new_wrapper_%s.%s", klass->name_space, klass->name);
5007 mb = mono_mb_new (mono_defaults.object_class, name, MONO_WRAPPER_STFLD_REMOTE);
5008 g_free (name);
5009
5010 mb->method->save_lmf = 1;
5011
5012 sig = mono_metadata_signature_alloc (mono_defaults.corlib, 4);
5013 sig->params [0] = &mono_defaults.object_class->byval_arg;
5014 sig->params [1] = &mono_defaults.int_class->byval_arg;
5015 sig->params [2] = &mono_defaults.int_class->byval_arg;
5016 sig->params [3] = &klass->byval_arg;
5017 sig->ret = &mono_defaults.void_class->byval_arg;
5018
5019 mono_mb_emit_ldarg (mb, 0);
5020 mono_mb_emit_ldarg (mb, 1);
5021 mono_mb_emit_ldarg (mb, 2);
5022 mono_mb_emit_ldarg (mb, 3);
5023
5024 if (klass->valuetype)
5025 mono_mb_emit_op (mb, CEE_BOX, klass);
5026
5027 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 4);
5028 csig->params [0] = &mono_defaults.object_class->byval_arg;
5029 csig->params [1] = &mono_defaults.int_class->byval_arg;
5030 csig->params [2] = &mono_defaults.int_class->byval_arg;
5031 csig->params [3] = &klass->byval_arg;
5032 csig->ret = &mono_defaults.void_class->byval_arg;
5033 csig->pinvoke = 1;
5034
5035 mono_mb_emit_native_call (mb, csig, mono_store_remote_field_new);
5036 emit_thread_interrupt_checkpoint (mb);
5037
5038 mono_mb_emit_byte (mb, CEE_RET);
5039
5040 res = mono_mb_create_and_cache (cache, klass,
5041 mb, sig, sig->param_count + 16);
5042 mono_mb_free (mb);
5043
5044 return res;
5045 }
5046
5047 /*
5048 * mono_marshal_get_stfld_wrapper:
5049 * @type: the type of the field
5050 *
5051 * This method generates a function which can be use to store a field with type
5052 * @type. The generated function has the following signature:
5053 * void stfld_wrapper (MonoObject *this, MonoClass *class, MonoClassField *field, int offset, <@type> val)
5054 */
5055 MonoMethod *
5056 mono_marshal_get_stfld_wrapper (MonoType *type)
5057 {
5058 MonoMethodSignature *sig;
5059 MonoMethodBuilder *mb;
5060 MonoMethod *res;
5061 MonoClass *klass;
5062 GHashTable *cache;
5063 char *name;
5064 int t, pos;
5065
5066 type = mono_type_get_underlying_type (type);
5067 t = type->type;
5068
5069 if (!type->byref) {
5070 if (type->type == MONO_TYPE_SZARRAY) {
5071 klass = mono_defaults.array_class;
5072 } else if (type->type == MONO_TYPE_VALUETYPE) {
5073 klass = type->data.klass;
5074 } else if (t == MONO_TYPE_OBJECT || t == MONO_TYPE_CLASS || t == MONO_TYPE_STRING) {
5075 klass = mono_defaults.object_class;
5076 } else if (t == MONO_TYPE_PTR || t == MONO_TYPE_FNPTR) {
5077 klass = mono_defaults.int_class;
5078 } else if (t == MONO_TYPE_GENERICINST) {
5079 if (mono_type_generic_inst_is_valuetype (type))
5080 klass = mono_class_from_mono_type (type);
5081 else
5082 klass = mono_defaults.object_class;
5083 } else {
5084 klass = mono_class_from_mono_type (type);
5085 }
5086 } else {
5087 klass = mono_defaults.int_class;
5088 }
5089
5090 cache = klass->image->stfld_wrapper_cache;
5091 if ((res = mono_marshal_find_in_cache (cache, klass)))
5092 return res;
5093
5094 /* we add the %p pointer value of klass because class names are not unique */
5095 name = g_strdup_printf ("__stfld_wrapper_%p_%s.%s", klass, klass->name_space, klass->name);
5096 mb = mono_mb_new (mono_defaults.object_class, name, MONO_WRAPPER_STFLD);
5097 g_free (name);
5098
5099 sig = mono_metadata_signature_alloc (mono_defaults.corlib, 5);
5100 sig->params [0] = &mono_defaults.object_class->byval_arg;
5101 sig->params [1] = &mono_defaults.int_class->byval_arg;
5102 sig->params [2] = &mono_defaults.int_class->byval_arg;
5103 sig->params [3] = &mono_defaults.int_class->byval_arg;
5104 sig->params [4] = &klass->byval_arg;
5105 sig->ret = &mono_defaults.void_class->byval_arg;
5106
5107 mono_mb_emit_ldarg (mb, 0);
5108 pos = mono_mb_emit_proxy_check (mb, CEE_BNE_UN);
5109
5110 mono_mb_emit_ldarg (mb, 0);
5111 mono_mb_emit_ldarg (mb, 1);
5112 mono_mb_emit_ldarg (mb, 2);
5113 mono_mb_emit_ldarg (mb, 4);
5114
5115 mono_mb_emit_managed_call (mb, mono_marshal_get_stfld_remote_wrapper (klass), NULL);
5116
5117 mono_mb_emit_byte (mb, CEE_RET);
5118
5119 mono_mb_patch_branch (mb, pos);
5120
5121 mono_mb_emit_ldarg (mb, 0);
5122 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
5123 mono_mb_emit_byte (mb, CEE_MONO_OBJADDR);
5124 mono_mb_emit_ldarg (mb, 3);
5125 mono_mb_emit_byte (mb, CEE_ADD);
5126 mono_mb_emit_ldarg (mb, 4);
5127
5128 switch (t) {
5129 case MONO_TYPE_I1:
5130 case MONO_TYPE_U1:
5131 case MONO_TYPE_BOOLEAN:
5132 case MONO_TYPE_CHAR:
5133 case MONO_TYPE_I2:
5134 case MONO_TYPE_U2:
5135 case MONO_TYPE_I4:
5136 case MONO_TYPE_U4:
5137 case MONO_TYPE_I8:
5138 case MONO_TYPE_U8:
5139 case MONO_TYPE_R4:
5140 case MONO_TYPE_R8:
5141 case MONO_TYPE_ARRAY:
5142 case MONO_TYPE_SZARRAY:
5143 case MONO_TYPE_OBJECT:
5144 case MONO_TYPE_CLASS:
5145 case MONO_TYPE_STRING:
5146 case MONO_TYPE_I:
5147 case MONO_TYPE_U:
5148 case MONO_TYPE_PTR:
5149 case MONO_TYPE_FNPTR:
5150 mono_mb_emit_byte (mb, mono_type_to_stind (type));
5151 break;
5152 case MONO_TYPE_VALUETYPE:
5153 g_assert (!klass->enumtype);
5154 mono_mb_emit_op (mb, CEE_STOBJ, klass);
5155 break;
5156 case MONO_TYPE_GENERICINST:
5157 mono_mb_emit_op (mb, CEE_STOBJ, klass);
5158 break;
5159 default:
5160 g_warning ("type %x not implemented", type->type);
5161 g_assert_not_reached ();
5162 }
5163
5164 mono_mb_emit_byte (mb, CEE_RET);
5165
5166 res = mono_mb_create_and_cache (cache, klass,
5167 mb, sig, sig->param_count + 16);
5168 mono_mb_free (mb);
5169
5170 return res;
5171 }
5172
5173 /*
5174 * generates IL code for the icall wrapper (the generated method
5175 * calls the unmanaged code in func)
5176 */
5177 MonoMethod *
5178 mono_marshal_get_icall_wrapper (MonoMethodSignature *sig, const char *name, gconstpointer func)
5179 {
5180 MonoMethodSignature *csig;
5181 MonoMethodBuilder *mb;
5182 MonoMethod *res;
5183 int i;
5184
5185 g_assert (sig->pinvoke);
5186
5187 mb = mono_mb_new (mono_defaults.object_class, name, MONO_WRAPPER_MANAGED_TO_NATIVE);
5188
5189 mb->method->save_lmf = 1;
5190
5191 /* we copy the signature, so that we can modify it */
5192
5193 if (sig->hasthis)
5194 mono_mb_emit_byte (mb, CEE_LDARG_0);
5195
5196 for (i = 0; i < sig->param_count; i++)
5197 mono_mb_emit_ldarg (mb, i + sig->hasthis);
5198
5199 mono_mb_emit_native_call (mb, sig, (gpointer) func);
5200 emit_thread_interrupt_checkpoint (mb);
5201 mono_mb_emit_byte (mb, CEE_RET);
5202
5203 csig = signature_dup (mono_defaults.corlib, sig);
5204 csig->pinvoke = 0;
5205 if (csig->call_convention == MONO_CALL_VARARG)
5206 csig->call_convention = 0;
5207
5208 res = mono_mb_create_method (mb, csig, csig->param_count + 16);
5209 mono_mb_free (mb);
5210
5211 return res;
5212 }
5213
5214 typedef struct {
5215 MonoMethodBuilder *mb;
5216 MonoMethodSignature *sig;
5217 MonoMethodPInvoke *piinfo;
5218 int *orig_conv_args; /* Locals containing the original values of byref args */
5219 int retobj_var;
5220 MonoClass *retobj_class;
5221 MonoMethodSignature *csig; /* Might need to be changed due to MarshalAs directives */
5222 MonoImage *image; /* The image to use for looking up custom marshallers */
5223 } EmitMarshalContext;
5224
5225 typedef enum {
5226 MARSHAL_ACTION_CONV_IN,
5227 MARSHAL_ACTION_PUSH,
5228 MARSHAL_ACTION_CONV_OUT,
5229 MARSHAL_ACTION_CONV_RESULT,
5230 MARSHAL_ACTION_MANAGED_CONV_IN,
5231 MARSHAL_ACTION_MANAGED_CONV_OUT,
5232 MARSHAL_ACTION_MANAGED_CONV_RESULT
5233 } MarshalAction;
5234
5235 static int
5236 emit_marshal_custom (EmitMarshalContext *m, int argnum, MonoType *t,
5237 MonoMarshalSpec *spec,
5238 int conv_arg, MonoType **conv_arg_type,
5239 MarshalAction action)
5240 {
5241 MonoType *mtype;
5242 MonoClass *mklass;
5243 static MonoClass *ICustomMarshaler = NULL;
5244 static MonoMethod *cleanup_native, *cleanup_managed;
5245 static MonoMethod *marshal_managed_to_native, *marshal_native_to_managed;
5246 MonoMethod *get_instance;
5247 MonoMethodBuilder *mb = m->mb;
5248 char *exception_msg = NULL;
5249 guint32 loc1;
5250 int pos2;
5251
5252 if (!ICustomMarshaler) {
5253 ICustomMarshaler = mono_class_from_name (mono_defaults.corlib, "System.Runtime.InteropServices", "ICustomMarshaler");
5254 g_assert (ICustomMarshaler);
5255
5256 cleanup_native = mono_class_get_method_from_name (ICustomMarshaler, "CleanUpNativeData", 1);
5257 g_assert (cleanup_native);
5258 cleanup_managed = mono_class_get_method_from_name (ICustomMarshaler, "CleanUpManagedData", 1);
5259 g_assert (cleanup_managed);
5260 marshal_managed_to_native = mono_class_get_method_from_name (ICustomMarshaler, "MarshalManagedToNative", 1);
5261 g_assert (marshal_managed_to_native);
5262 marshal_native_to_managed = mono_class_get_method_from_name (ICustomMarshaler, "MarshalNativeToManaged", 1);
5263 g_assert (marshal_native_to_managed);
5264 }
5265
5266 mtype = mono_reflection_type_from_name (spec->data.custom_data.custom_name, m->image);
5267 g_assert (mtype != NULL);
5268 mklass = mono_class_from_mono_type (mtype);
5269 g_assert (mklass != NULL);
5270
5271 if (!mono_class_is_assignable_from (ICustomMarshaler, mklass))
5272 exception_msg = g_strdup_printf ("Custom marshaler '%s' does not implement the ICustomMarshaler interface.", mklass->name);
5273
5274 get_instance = mono_class_get_method_from_name_flags (mklass, "GetInstance", 1, METHOD_ATTRIBUTE_STATIC);
5275 if (get_instance) {
5276 MonoMethodSignature *get_sig = mono_method_signature (get_instance);
5277 if ((get_sig->ret->type != MONO_TYPE_CLASS) ||
5278 (mono_class_from_mono_type (get_sig->ret) != ICustomMarshaler) ||
5279 (get_sig->params [0]->type != MONO_TYPE_STRING))
5280 get_instance = NULL;
5281 }
5282
5283 if (!get_instance)
5284 exception_msg = g_strdup_printf ("Custom marshaler '%s' does not implement a static GetInstance method that takes a single string parameter and returns an ICustomMarshaler.", mklass->name);
5285
5286 /* Throw exception and emit compensation code if neccesary */
5287 if (exception_msg) {
5288 switch (action) {
5289 case MARSHAL_ACTION_CONV_IN:
5290 case MARSHAL_ACTION_CONV_RESULT:
5291 case MARSHAL_ACTION_MANAGED_CONV_RESULT:
5292 if ((action == MARSHAL_ACTION_CONV_RESULT) || (action == MARSHAL_ACTION_MANAGED_CONV_RESULT))
5293 mono_mb_emit_byte (mb, CEE_POP);
5294
5295 mono_mb_emit_exception_full (mb, "System", "ApplicationException", exception_msg);
5296 g_free (exception_msg);
5297
5298 break;
5299 case MARSHAL_ACTION_PUSH:
5300 mono_mb_emit_byte (mb, CEE_LDNULL);
5301 break;
5302 default:
5303 break;
5304 }
5305 return 0;
5306 }
5307
5308 /* FIXME: MS.NET seems to create one instance for each klass + cookie pair */
5309 /* FIXME: MS.NET throws an exception if GetInstance returns null */
5310
5311 switch (action) {
5312 case MARSHAL_ACTION_CONV_IN:
5313 switch (t->type) {
5314 case MONO_TYPE_CLASS:
5315 case MONO_TYPE_OBJECT:
5316 case MONO_TYPE_STRING:
5317 case MONO_TYPE_ARRAY:
5318 case MONO_TYPE_SZARRAY:
5319 case MONO_TYPE_VALUETYPE:
5320 break;
5321
5322 default:
5323 g_warning ("custom marshalling of type %x is currently not supported", t->type);
5324 g_assert_not_reached ();
5325 break;
5326 }
5327
5328 conv_arg = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
5329
5330 mono_mb_emit_byte (mb, CEE_LDNULL);
5331 mono_mb_emit_stloc (mb, conv_arg);
5332
5333 if (t->byref && (t->attrs & PARAM_ATTRIBUTE_OUT))
5334 break;
5335
5336 /* Minic MS.NET behavior */
5337 if (!t->byref && (t->attrs & PARAM_ATTRIBUTE_OUT) && !(t->attrs & PARAM_ATTRIBUTE_IN))
5338 break;
5339
5340 /* Check for null */
5341 mono_mb_emit_ldarg (mb, argnum);
5342 if (t->byref)
5343 mono_mb_emit_byte (mb, CEE_LDIND_I);
5344 pos2 = mono_mb_emit_branch (mb, CEE_BRFALSE);
5345
5346 mono_mb_emit_ldstr (mb, g_strdup (spec->data.custom_data.cookie));
5347
5348 mono_mb_emit_op (mb, CEE_CALL, get_instance);
5349
5350 mono_mb_emit_ldarg (mb, argnum);
5351 if (t->byref)
5352 mono_mb_emit_byte (mb, CEE_LDIND_REF);
5353
5354 if (t->type == MONO_TYPE_VALUETYPE) {
5355 /*
5356 * Since we can't determine the type of the argument, we
5357 * will assume the unmanaged function takes a pointer.
5358 */
5359 *conv_arg_type = &mono_defaults.int_class->byval_arg;
5360
5361 mono_mb_emit_op (mb, CEE_BOX, mono_class_from_mono_type (t));
5362 }
5363
5364 mono_mb_emit_op (mb, CEE_CALLVIRT, marshal_managed_to_native);
5365 mono_mb_emit_stloc (mb, conv_arg);
5366
5367 mono_mb_patch_branch (mb, pos2);
5368 break;
5369
5370 case MARSHAL_ACTION_CONV_OUT:
5371 /* Check for null */
5372 mono_mb_emit_ldloc (mb, conv_arg);
5373 pos2 = mono_mb_emit_branch (mb, CEE_BRFALSE);
5374
5375 if (t->byref) {
5376 mono_mb_emit_ldarg (mb, argnum);
5377
5378 mono_mb_emit_ldstr (mb, g_strdup (spec->data.custom_data.cookie));
5379
5380 mono_mb_emit_op (mb, CEE_CALL, get_instance);
5381
5382 mono_mb_emit_ldloc (mb, conv_arg);
5383 mono_mb_emit_op (mb, CEE_CALLVIRT, marshal_native_to_managed);
5384 mono_mb_emit_byte (mb, CEE_STIND_REF);
5385 } else if (t->attrs &PARAM_ATTRIBUTE_OUT) {
5386 mono_mb_emit_ldstr (mb, g_strdup (spec->data.custom_data.cookie));
5387
5388 mono_mb_emit_op (mb, CEE_CALL, get_instance);
5389
5390 mono_mb_emit_ldloc (mb, conv_arg);
5391 mono_mb_emit_op (mb, CEE_CALLVIRT, marshal_native_to_managed);
5392
5393 /* We have nowhere to store the result */
5394 mono_mb_emit_byte (mb, CEE_POP);
5395 }
5396
5397 mono_mb_emit_ldstr (mb, g_strdup (spec->data.custom_data.cookie));
5398
5399 mono_mb_emit_op (mb, CEE_CALL, get_instance);
5400
5401 mono_mb_emit_ldloc (mb, conv_arg);
5402
5403 mono_mb_emit_op (mb, CEE_CALLVIRT, cleanup_native);
5404
5405 mono_mb_patch_branch (mb, pos2);
5406 break;
5407
5408 case MARSHAL_ACTION_PUSH:
5409 if (t->byref)
5410 mono_mb_emit_ldloc_addr (mb, conv_arg);
5411 else
5412 mono_mb_emit_ldloc (mb, conv_arg);
5413 break;
5414
5415 case MARSHAL_ACTION_CONV_RESULT:
5416 loc1 = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
5417
5418 mono_mb_emit_stloc (mb, 3);
5419
5420 mono_mb_emit_ldloc (mb, 3);
5421 mono_mb_emit_stloc (mb, loc1);
5422
5423 /* Check for null */
5424 mono_mb_emit_ldloc (mb, 3);
5425 pos2 = mono_mb_emit_branch (mb, CEE_BRFALSE);
5426
5427 mono_mb_emit_ldstr (mb, g_strdup (spec->data.custom_data.cookie));
5428
5429 mono_mb_emit_op (mb, CEE_CALL, get_instance);
5430 mono_mb_emit_byte (mb, CEE_DUP);
5431
5432 mono_mb_emit_ldloc (mb, 3);
5433 mono_mb_emit_op (mb, CEE_CALLVIRT, marshal_native_to_managed);
5434 mono_mb_emit_stloc (mb, 3);
5435
5436 mono_mb_emit_ldloc (mb, loc1);
5437 mono_mb_emit_op (mb, CEE_CALLVIRT, cleanup_native);
5438
5439 mono_mb_patch_branch (mb, pos2);
5440 break;
5441
5442 case MARSHAL_ACTION_MANAGED_CONV_IN:
5443 if (t->byref) {
5444 conv_arg = 0;
5445 break;
5446 }
5447
5448 conv_arg = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
5449
5450 mono_mb_emit_byte (mb, CEE_LDNULL);
5451 mono_mb_emit_stloc (mb, conv_arg);
5452
5453 /* Check for null */
5454 mono_mb_emit_ldarg (mb, argnum);
5455 pos2 = mono_mb_emit_branch (mb, CEE_BRFALSE);
5456
5457 mono_mb_emit_ldstr (mb, g_strdup (spec->data.custom_data.cookie));
5458 mono_mb_emit_op (mb, CEE_CALL, get_instance);
5459
5460 mono_mb_emit_ldarg (mb, argnum);
5461
5462 mono_mb_emit_op (mb, CEE_CALLVIRT, marshal_native_to_managed);
5463 mono_mb_emit_stloc (mb, conv_arg);
5464
5465 mono_mb_patch_branch (mb, pos2);
5466 break;
5467
5468 case MARSHAL_ACTION_MANAGED_CONV_RESULT:
5469 g_assert (!t->byref);
5470
5471 loc1 = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
5472
5473 mono_mb_emit_stloc (mb, 3);
5474
5475 mono_mb_emit_ldloc (mb, 3);
5476 mono_mb_emit_stloc (mb, loc1);
5477
5478 /* Check for null */
5479 mono_mb_emit_ldloc (mb, 3);
5480 pos2 = mono_mb_emit_branch (mb, CEE_BRFALSE);
5481
5482 mono_mb_emit_ldstr (mb, g_strdup (spec->data.custom_data.cookie));
5483 mono_mb_emit_op (mb, CEE_CALL, get_instance);
5484 mono_mb_emit_byte (mb, CEE_DUP);
5485
5486 mono_mb_emit_ldloc (mb, 3);
5487 mono_mb_emit_op (mb, CEE_CALLVIRT, marshal_managed_to_native);
5488 mono_mb_emit_stloc (mb, 3);
5489
5490 mono_mb_emit_ldloc (mb, loc1);
5491 mono_mb_emit_op (mb, CEE_CALLVIRT, cleanup_managed);
5492
5493 mono_mb_patch_branch (mb, pos2);
5494 break;
5495
5496 case MARSHAL_ACTION_MANAGED_CONV_OUT:
5497 g_assert (!t->byref);
5498
5499 /* Check for null */
5500 mono_mb_emit_ldloc (mb, conv_arg);
5501 pos2 = mono_mb_emit_branch (mb, CEE_BRFALSE);
5502
5503 /* Call CleanUpManagedData */
5504 mono_mb_emit_ldstr (mb, g_strdup (spec->data.custom_data.cookie));
5505
5506 mono_mb_emit_op (mb, CEE_CALL, get_instance);
5507
5508 mono_mb_emit_ldloc (mb, conv_arg);
5509 mono_mb_emit_op (mb, CEE_CALLVIRT, cleanup_managed);
5510
5511 mono_mb_patch_branch (mb, pos2);
5512 break;
5513
5514 default:
5515 g_assert_not_reached ();
5516 }
5517
5518 return conv_arg;
5519 }
5520
5521 static int
5522 emit_marshal_asany (EmitMarshalContext *m, int argnum, MonoType *t,
5523 MonoMarshalSpec *spec,
5524 int conv_arg, MonoType **conv_arg_type,
5525 MarshalAction action)
5526 {
5527 MonoMethodBuilder *mb = m->mb;
5528
5529 switch (action) {
5530 case MARSHAL_ACTION_CONV_IN: {
5531 MonoMarshalNative encoding = mono_marshal_get_string_encoding (m->piinfo, NULL);
5532
5533 g_assert (t->type == MONO_TYPE_OBJECT);
5534 g_assert (!t->byref);
5535
5536 conv_arg = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
5537 mono_mb_emit_ldarg (mb, argnum);
5538 mono_mb_emit_icon (mb, encoding);
5539 mono_mb_emit_icon (mb, t->attrs);
5540 mono_mb_emit_icall (mb, mono_marshal_asany);
5541 mono_mb_emit_stloc (mb, conv_arg);
5542 break;
5543 }
5544
5545 case MARSHAL_ACTION_PUSH:
5546 mono_mb_emit_ldloc (mb, conv_arg);
5547 break;
5548
5549 case MARSHAL_ACTION_CONV_OUT: {
5550 MonoMarshalNative encoding = mono_marshal_get_string_encoding (m->piinfo, NULL);
5551
5552 mono_mb_emit_ldarg (mb, argnum);
5553 mono_mb_emit_ldloc (mb, conv_arg);
5554 mono_mb_emit_icon (mb, encoding);
5555 mono_mb_emit_icon (mb, t->attrs);
5556 mono_mb_emit_icall (mb, mono_marshal_free_asany);
5557 break;
5558 }
5559
5560 default:
5561 g_assert_not_reached ();
5562 }
5563
5564 return conv_arg;
5565 }
5566
5567 static int
5568 emit_marshal_vtype (EmitMarshalContext *m, int argnum, MonoType *t,
5569 MonoMarshalSpec *spec,
5570 int conv_arg, MonoType **conv_arg_type,
5571 MarshalAction action)
5572 {
5573 MonoMethodBuilder *mb = m->mb;
5574 MonoClass *klass;
5575 int pos = 0, pos2;
5576
5577 klass = t->data.klass;
5578
5579 switch (action) {
5580 case MARSHAL_ACTION_CONV_IN:
5581 if (((klass->flags & TYPE_ATTRIBUTE_LAYOUT_MASK) == TYPE_ATTRIBUTE_EXPLICIT_LAYOUT) ||
5582 klass->blittable || klass->enumtype)
5583 break;
5584
5585 conv_arg = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
5586
5587 /* store the address of the source into local variable 0 */
5588 if (t->byref)
5589 mono_mb_emit_ldarg (mb, argnum);
5590 else
5591 mono_mb_emit_ldarg_addr (mb, argnum);
5592
5593 mono_mb_emit_stloc (mb, 0);
5594
5595 /* allocate space for the native struct and
5596 * store the address into local variable 1 (dest) */
5597 mono_mb_emit_icon (mb, mono_class_native_size (klass, NULL));
5598 mono_mb_emit_byte (mb, CEE_PREFIX1);
5599 mono_mb_emit_byte (mb, CEE_LOCALLOC);
5600 mono_mb_emit_stloc (mb, conv_arg);
5601
5602 if (t->byref) {
5603 mono_mb_emit_ldloc (mb, 0);
5604 pos = mono_mb_emit_branch (mb, CEE_BRFALSE);
5605 }
5606
5607 if (!(t->byref && !(t->attrs & PARAM_ATTRIBUTE_IN) && (t->attrs & PARAM_ATTRIBUTE_OUT))) {
5608 /* set dst_ptr */
5609 mono_mb_emit_ldloc (mb, conv_arg);
5610 mono_mb_emit_stloc (mb, 1);
5611
5612 /* emit valuetype conversion code */
5613 emit_struct_conv (mb, klass, FALSE);
5614 }
5615
5616 if (t->byref)
5617 mono_mb_patch_branch (mb, pos);
5618 break;
5619
5620 case MARSHAL_ACTION_PUSH:
5621 if (spec && spec->native == MONO_NATIVE_LPSTRUCT) {
5622 /* FIXME: */
5623 g_assert (!t->byref);
5624
5625 /* Have to change the signature since the vtype is passed byref */
5626 m->csig->params [argnum - m->csig->hasthis] = &mono_defaults.int_class->byval_arg;
5627
5628 if (((klass->flags & TYPE_ATTRIBUTE_LAYOUT_MASK) == TYPE_ATTRIBUTE_EXPLICIT_LAYOUT) ||
5629 klass->blittable || klass->enumtype)
5630 mono_mb_emit_ldarg_addr (mb, argnum);
5631 else
5632 mono_mb_emit_ldloc (mb, conv_arg);
5633 break;
5634 }
5635
5636 if (((klass->flags & TYPE_ATTRIBUTE_LAYOUT_MASK) == TYPE_ATTRIBUTE_EXPLICIT_LAYOUT) ||
5637 klass->blittable || klass->enumtype) {
5638 mono_mb_emit_ldarg (mb, argnum);
5639 break;
5640 }
5641 mono_mb_emit_ldloc (mb, conv_arg);
5642 if (!t->byref) {
5643 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
5644 mono_mb_emit_op (mb, CEE_MONO_LDNATIVEOBJ, klass);
5645 }
5646 break;
5647
5648 case MARSHAL_ACTION_CONV_OUT:
5649 if (((klass->flags & TYPE_ATTRIBUTE_LAYOUT_MASK) == TYPE_ATTRIBUTE_EXPLICIT_LAYOUT) ||
5650 klass->blittable || klass->enumtype)
5651 break;
5652
5653 if (t->byref) {
5654 /* dst = argument */
5655 mono_mb_emit_ldarg (mb, argnum);
5656 mono_mb_emit_stloc (mb, 1);
5657
5658 mono_mb_emit_ldloc (mb, 1);
5659 pos = mono_mb_emit_branch (mb, CEE_BRFALSE);
5660
5661 if (!((t->attrs & PARAM_ATTRIBUTE_IN) && !(t->attrs & PARAM_ATTRIBUTE_OUT))) {
5662 /* src = tmp_locals [i] */
5663 mono_mb_emit_ldloc (mb, conv_arg);
5664 mono_mb_emit_stloc (mb, 0);
5665
5666 /* emit valuetype conversion code */
5667 emit_struct_conv (mb, klass, TRUE);
5668 }
5669 }
5670
5671 emit_struct_free (mb, klass, conv_arg);
5672
5673 if (t->byref)
5674 mono_mb_patch_branch (mb, pos);
5675 break;
5676
5677 case MARSHAL_ACTION_CONV_RESULT:
5678 if (((klass->flags & TYPE_ATTRIBUTE_LAYOUT_MASK) == TYPE_ATTRIBUTE_EXPLICIT_LAYOUT) ||
5679 klass->blittable) {
5680 mono_mb_emit_stloc (mb, 3);
5681 break;
5682 }
5683 /* load pointer to returned value type */
5684 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
5685 mono_mb_emit_byte (mb, CEE_MONO_VTADDR);
5686 /* store the address of the source into local variable 0 */
5687 mono_mb_emit_stloc (mb, 0);
5688 /* set dst_ptr */
5689 mono_mb_emit_ldloc_addr (mb, 3);
5690 mono_mb_emit_stloc (mb, 1);
5691
5692 /* emit valuetype conversion code */
5693 emit_struct_conv (mb, klass, TRUE);
5694 break;
5695
5696 case MARSHAL_ACTION_MANAGED_CONV_IN:
5697 if (((klass->flags & TYPE_ATTRIBUTE_LAYOUT_MASK) == TYPE_ATTRIBUTE_EXPLICIT_LAYOUT) ||
5698 klass->blittable || klass->enumtype) {
5699 conv_arg = 0;
5700 break;
5701 }
5702
5703 conv_arg = mono_mb_add_local (mb, &klass->byval_arg);
5704
5705 if (t->attrs & PARAM_ATTRIBUTE_OUT)
5706 break;
5707
5708 if (t->byref)
5709 mono_mb_emit_ldarg (mb, argnum);
5710 else
5711 mono_mb_emit_ldarg_addr (mb, argnum);
5712 mono_mb_emit_stloc (mb, 0);
5713
5714 if (t->byref) {
5715 mono_mb_emit_ldloc (mb, 0);
5716 pos = mono_mb_emit_branch (mb, CEE_BRFALSE);
5717 }
5718
5719 mono_mb_emit_ldloc_addr (mb, conv_arg);
5720 mono_mb_emit_stloc (mb, 1);
5721
5722 /* emit valuetype conversion code */
5723 emit_struct_conv (mb, klass, TRUE);
5724
5725 if (t->byref)
5726 mono_mb_patch_branch (mb, pos);
5727 break;
5728
5729 case MARSHAL_ACTION_MANAGED_CONV_OUT:
5730 if (((klass->flags & TYPE_ATTRIBUTE_LAYOUT_MASK) == TYPE_ATTRIBUTE_EXPLICIT_LAYOUT) ||
5731 klass->blittable || klass->enumtype) {
5732 break;
5733 }
5734
5735 /* Check for null */
5736 mono_mb_emit_ldarg (mb, argnum);
5737 pos2 = mono_mb_emit_branch (mb, CEE_BRFALSE);
5738
5739 /* Set src */
5740 mono_mb_emit_ldloc_addr (mb, conv_arg);
5741 mono_mb_emit_stloc (mb, 0);
5742
5743 /* Set dest */
5744 mono_mb_emit_ldarg (mb, argnum);
5745 mono_mb_emit_stloc (mb, 1);
5746
5747 /* emit valuetype conversion code */
5748 emit_struct_conv (mb, klass, FALSE);
5749
5750 mono_mb_patch_branch (mb, pos2);
5751 break;
5752
5753 case MARSHAL_ACTION_MANAGED_CONV_RESULT:
5754 if (((klass->flags & TYPE_ATTRIBUTE_LAYOUT_MASK) == TYPE_ATTRIBUTE_EXPLICIT_LAYOUT) ||
5755 klass->blittable || klass->enumtype) {
5756 mono_mb_emit_stloc (mb, 3);
5757 m->retobj_var = 0;
5758 break;
5759 }
5760
5761 /* load pointer to returned value type */
5762 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
5763 mono_mb_emit_byte (mb, CEE_MONO_VTADDR);
5764
5765 /* store the address of the source into local variable 0 */
5766 mono_mb_emit_stloc (mb, 0);
5767 /* allocate space for the native struct and
5768 * store the address into dst_ptr */
5769 m->retobj_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
5770 m->retobj_class = klass;
5771 g_assert (m->retobj_var);
5772 mono_mb_emit_icon (mb, mono_class_native_size (klass, NULL));
5773 mono_mb_emit_byte (mb, CEE_CONV_I);
5774 mono_mb_emit_icall (mb, mono_marshal_alloc);
5775 mono_mb_emit_stloc (mb, 1);
5776 mono_mb_emit_ldloc (mb, 1);
5777 mono_mb_emit_stloc (mb, m->retobj_var);
5778
5779 /* emit valuetype conversion code */
5780 emit_struct_conv (mb, klass, FALSE);
5781 break;
5782
5783 default:
5784 g_assert_not_reached ();
5785 }
5786
5787 return conv_arg;
5788 }
5789
5790 static int
5791 emit_marshal_string (EmitMarshalContext *m, int argnum, MonoType *t,
5792 MonoMarshalSpec *spec,
5793 int conv_arg, MonoType **conv_arg_type,
5794 MarshalAction action)
5795 {
5796 MonoMethodBuilder *mb = m->mb;
5797 MonoMarshalNative encoding = mono_marshal_get_string_encoding (m->piinfo, spec);
5798 MonoMarshalConv conv = mono_marshal_get_string_to_ptr_conv (m->piinfo, spec);
5799 gboolean need_free;
5800
5801 switch (action) {
5802 case MARSHAL_ACTION_CONV_IN:
5803 *conv_arg_type = &mono_defaults.int_class->byval_arg;
5804 conv_arg = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
5805
5806 if (t->byref) {
5807 if (t->attrs & PARAM_ATTRIBUTE_OUT)
5808 break;
5809
5810 mono_mb_emit_ldarg (mb, argnum);
5811 mono_mb_emit_byte (mb, CEE_LDIND_I);
5812 } else {
5813 mono_mb_emit_ldarg (mb, argnum);
5814 }
5815
5816 if (conv == -1) {
5817 char *msg = g_strdup_printf ("string marshalling conversion %d not implemented", encoding);
5818 MonoException *exc = mono_get_exception_not_implemented (msg);
5819 g_warning (msg);
5820 g_free (msg);
5821 mono_raise_exception (exc);
5822 }
5823 else
5824 mono_mb_emit_icall (mb, conv_to_icall (conv));
5825
5826 mono_mb_emit_stloc (mb, conv_arg);
5827 break;
5828
5829 case MARSHAL_ACTION_CONV_OUT:
5830 if (t->byref && (t->attrs & PARAM_ATTRIBUTE_OUT)) {
5831 mono_mb_emit_ldarg (mb, argnum);
5832 mono_mb_emit_ldloc (mb, conv_arg);
5833 if (conv == MONO_MARSHAL_CONV_STR_BSTR) {
5834 mono_mb_emit_icall (mb, conv_to_icall (MONO_MARSHAL_CONV_BSTR_STR));
5835 // BSTRs always need freed
5836 mono_mb_emit_ldloc (mb, conv_arg);
5837 mono_mb_emit_icall (mb, mono_free_bstr);
5838 }
5839 else
5840 mono_mb_emit_icall (mb, conv_to_icall (MONO_MARSHAL_CONV_LPSTR_STR));
5841 mono_mb_emit_byte (mb, CEE_STIND_REF);
5842 } else {
5843 if (mono_marshal_need_free (t, m->piinfo, spec)) {
5844 mono_mb_emit_ldloc (mb, conv_arg);
5845 if (conv == MONO_MARSHAL_CONV_STR_BSTR)
5846 mono_mb_emit_icall (mb, mono_free_bstr);
5847 else
5848 mono_mb_emit_icall (mb, mono_marshal_free);
5849 }
5850 }
5851 break;
5852
5853 case MARSHAL_ACTION_PUSH:
5854 if (t->byref)
5855 mono_mb_emit_ldloc_addr (mb, conv_arg);
5856 else
5857 mono_mb_emit_ldloc (mb, conv_arg);
5858 break;
5859
5860 case MARSHAL_ACTION_CONV_RESULT:
5861 mono_mb_emit_stloc (mb, 0);
5862
5863 conv = mono_marshal_get_ptr_to_string_conv (m->piinfo, spec, &need_free);
5864 if (conv == -1) {
5865 char *msg = g_strdup_printf ("string marshalling conversion %d not implemented", encoding);
5866 mono_mb_emit_exception_marshal_directive (mb, msg);
5867 break;
5868 }
5869
5870 mono_mb_emit_ldloc (mb, 0);
5871 mono_mb_emit_icall (mb, conv_to_icall (conv));
5872 mono_mb_emit_stloc (mb, 3);
5873
5874 /* free the string */
5875 mono_mb_emit_ldloc (mb, 0);
5876 if (conv == MONO_MARSHAL_CONV_BSTR_STR)
5877 mono_mb_emit_icall (mb, mono_free_bstr);
5878 else
5879 mono_mb_emit_icall (mb, g_free);
5880 break;
5881
5882 case MARSHAL_ACTION_MANAGED_CONV_IN:
5883 if (t->byref) {
5884 conv_arg = 0;
5885 break;
5886 }
5887
5888 conv_arg = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
5889 *conv_arg_type = &mono_defaults.int_class->byval_arg;
5890
5891 conv = mono_marshal_get_ptr_to_string_conv (m->piinfo, spec, &need_free);
5892 if (conv == -1) {
5893 char *msg = g_strdup_printf ("string marshalling conversion %d not implemented", encoding);
5894 mono_mb_emit_exception_marshal_directive (mb, msg);
5895 break;
5896 }
5897
5898 mono_mb_emit_ldarg (mb, argnum);
5899 mono_mb_emit_icall (mb, conv_to_icall (conv));
5900 mono_mb_emit_stloc (mb, conv_arg);
5901 break;
5902
5903 case MARSHAL_ACTION_MANAGED_CONV_RESULT:
5904 mono_mb_emit_icall (mb, conv_to_icall (MONO_MARSHAL_CONV_STR_LPSTR));
5905 mono_mb_emit_stloc (mb, 3);
5906 break;
5907
5908 default:
5909 g_assert_not_reached ();
5910 }
5911
5912 return conv_arg;
5913 }
5914
5915 static int
5916 emit_marshal_object (EmitMarshalContext *m, int argnum, MonoType *t,
5917 MonoMarshalSpec *spec,
5918 int conv_arg, MonoType **conv_arg_type,
5919 MarshalAction action)
5920 {
5921 MonoMethodBuilder *mb = m->mb;
5922 MonoClass *klass = t->data.klass;
5923 int pos, pos2, loc;
5924
5925 if (mono_class_from_mono_type (t) == mono_defaults.object_class &&
5926 (!spec || (spec && spec->native != MONO_NATIVE_STRUCT)) &&
5927 (!spec || (spec && (spec->native != MONO_NATIVE_IUNKNOWN &&
5928 spec->native != MONO_NATIVE_IDISPATCH &&
5929 spec->native != MONO_NATIVE_INTERFACE)))) {
5930 mono_raise_exception (mono_get_exception_not_implemented ("Marshalling of type object is not implemented"));
5931 }
5932
5933 switch (action) {
5934 case MARSHAL_ACTION_CONV_IN:
5935 *conv_arg_type = &mono_defaults.int_class->byval_arg;
5936 conv_arg = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
5937
5938 m->orig_conv_args [argnum] = 0;
5939
5940 if (spec && spec->native == MONO_NATIVE_STRUCT)
5941 {
5942 static MonoMethod *get_native_variant_for_object = NULL;
5943 int local_variant;
5944 if (!get_native_variant_for_object)
5945 get_native_variant_for_object = mono_class_get_method_from_name (mono_defaults.marshal_class, "GetNativeVariantForObject", 2);
5946
5947 *conv_arg_type = &mono_defaults.variant_class->byval_arg;
5948
5949 local_variant = mono_mb_add_local (mb, &mono_defaults.variant_class->byval_arg);
5950 conv_arg = local_variant;
5951 mono_mb_emit_ldarg (mb, argnum);
5952 if (t->byref)
5953 mono_mb_emit_byte(mb, CEE_LDIND_REF);
5954 mono_mb_emit_ldloc_addr (mb, local_variant);
5955 mono_mb_emit_managed_call (mb, get_native_variant_for_object, NULL);
5956 }
5957 else if (spec && (spec->native == MONO_NATIVE_IUNKNOWN ||
5958 spec->native == MONO_NATIVE_IDISPATCH ||
5959 spec->native == MONO_NATIVE_INTERFACE)) {
5960 mono_mb_emit_ptr (mb, 0);
5961 mono_mb_emit_stloc (mb, conv_arg);
5962
5963 if (t->byref) {
5964 /* we dont need any conversions for out parameters */
5965 if (t->attrs & PARAM_ATTRIBUTE_OUT)
5966 break;
5967 else {
5968 char *msg = g_strdup_printf ("non out object references are no implemented");
5969 MonoException *exc = mono_get_exception_not_implemented (msg);
5970 g_warning (msg);
5971 g_free (msg);
5972 mono_raise_exception (exc);
5973
5974 }
5975 } else {
5976 char *msg = NULL;
5977 guint32 pos_failed = 0, pos_rcw = 0;
5978 mono_mb_emit_ldarg (mb, argnum);
5979 // if null just break, conv arg was already inited to 0
5980 pos_failed = mono_mb_emit_short_branch (mb, CEE_BRFALSE_S);
5981
5982 mono_mb_emit_ldarg (mb, argnum);
5983 mono_mb_emit_icall (mb, cominterop_object_is_rcw);
5984 pos_rcw = mono_mb_emit_short_branch (mb, CEE_BRFALSE_S);
5985
5986 mono_mb_emit_ldarg (mb, argnum);
5987 mono_mb_emit_ldflda (mb, G_STRUCT_OFFSET (MonoTransparentProxy, rp));
5988 mono_mb_emit_byte (mb, CEE_LDIND_REF);
5989
5990 /* load the RCW from the ComInteropProxy*/
5991 mono_mb_emit_ldflda (mb, G_STRUCT_OFFSET (MonoComInteropProxy, com_object));
5992 mono_mb_emit_byte (mb, CEE_LDIND_REF);
5993
5994 if (klass && klass != mono_defaults.object_class) {
5995 static MonoMethod* GetInterface = NULL;
5996
5997 if (!GetInterface)
5998 GetInterface = mono_class_get_method_from_name (mono_defaults.com_object_class, "GetInterface", 1);
5999 mono_mb_emit_ptr (mb, t);
6000 mono_mb_emit_icall (mb, type_from_handle);
6001 mono_mb_emit_managed_call (mb, GetInterface, NULL);
6002 }
6003 else if (spec->native == MONO_NATIVE_IUNKNOWN) {
6004 static MonoProperty* iunknown = NULL;
6005
6006 if (!iunknown)
6007 iunknown = mono_class_get_property_from_name (mono_defaults.com_object_class, "IUnknown");
6008 mono_mb_emit_managed_call (mb, iunknown->get, NULL);
6009 }
6010 else if (spec->native == MONO_NATIVE_IDISPATCH) {
6011 static MonoProperty* idispatch = NULL;
6012
6013 if (!idispatch)
6014 idispatch = mono_class_get_property_from_name (mono_defaults.com_object_class, "IDispatch");
6015 mono_mb_emit_managed_call (mb, idispatch->get, NULL);
6016 }
6017 else {
6018 }
6019 mono_mb_emit_stloc (mb, conv_arg);
6020
6021 // if not rcw
6022 mono_mb_patch_short_branch (mb, pos_rcw);
6023 msg = g_strdup ("Marshalling of COM Callable Wrappers is not yet implemented.");
6024 mono_mb_emit_exception_marshal_directive (mb, msg);
6025
6026 // case if null
6027 mono_mb_patch_short_branch (mb, pos_failed);
6028 }
6029 }
6030 else if (klass->delegate) {
6031 g_assert (!t->byref);
6032 mono_mb_emit_ldarg (mb, argnum);
6033 mono_mb_emit_icall (mb, conv_to_icall (MONO_MARSHAL_CONV_DEL_FTN));
6034 mono_mb_emit_stloc (mb, conv_arg);
6035 } else if (klass == mono_defaults.stringbuilder_class) {
6036 MonoMarshalNative encoding = mono_marshal_get_string_encoding (m->piinfo, spec);
6037 MonoMarshalConv conv = mono_marshal_get_stringbuilder_to_ptr_conv (m->piinfo, spec);
6038
6039 g_assert (!t->byref);
6040 mono_mb_emit_ldarg (mb, argnum);
6041
6042 if (conv != -1)
6043 mono_mb_emit_icall (mb, conv_to_icall (conv));
6044 else {
6045 char *msg = g_strdup_printf ("stringbuilder marshalling conversion %d not implemented", encoding);
6046 MonoException *exc = mono_get_exception_not_implemented (msg);
6047 g_warning (msg);
6048 g_free (msg);
6049 mono_raise_exception (exc);
6050 }
6051
6052 mono_mb_emit_stloc (mb, conv_arg);
6053 } else if (klass->blittable) {
6054 mono_mb_emit_byte (mb, CEE_LDNULL);
6055 mono_mb_emit_stloc (mb, conv_arg);
6056
6057 mono_mb_emit_ldarg (mb, argnum);
6058 pos = mono_mb_emit_branch (mb, CEE_BRFALSE);
6059
6060 mono_mb_emit_ldarg (mb, argnum);
6061 mono_mb_emit_ldflda (mb, sizeof (MonoObject));
6062 mono_mb_emit_stloc (mb, conv_arg);
6063
6064 mono_mb_patch_branch (mb, pos);
6065 break;
6066 } else {
6067 mono_mb_emit_byte (mb, CEE_LDNULL);
6068 mono_mb_emit_stloc (mb, conv_arg);
6069
6070 if (t->byref) {
6071 /* we dont need any conversions for out parameters */
6072 if (t->attrs & PARAM_ATTRIBUTE_OUT)
6073 break;
6074
6075 mono_mb_emit_ldarg (mb, argnum);
6076 mono_mb_emit_byte (mb, CEE_LDIND_I);
6077
6078 } else {
6079 mono_mb_emit_ldarg (mb, argnum);
6080 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
6081 mono_mb_emit_byte (mb, CEE_MONO_OBJADDR);
6082 }
6083
6084 /* store the address of the source into local variable 0 */
6085 mono_mb_emit_stloc (mb, 0);
6086 mono_mb_emit_ldloc (mb, 0);
6087 pos = mono_mb_emit_branch (mb, CEE_BRFALSE);
6088
6089 /* allocate space for the native struct and store the address */
6090 mono_mb_emit_icon (mb, mono_class_native_size (klass, NULL));
6091 mono_mb_emit_byte (mb, CEE_PREFIX1);
6092 mono_mb_emit_byte (mb, CEE_LOCALLOC);
6093 mono_mb_emit_stloc (mb, conv_arg);
6094
6095 if (t->byref) {
6096 /* Need to store the original buffer so we can free it later */
6097 m->orig_conv_args [argnum] = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
6098 mono_mb_emit_ldloc (mb, conv_arg);
6099 mono_mb_emit_stloc (mb, m->orig_conv_args [argnum]);
6100 }
6101
6102 /* set the src_ptr */
6103 mono_mb_emit_ldloc (mb, 0);
6104 mono_mb_emit_ldflda (mb, sizeof (MonoObject));
6105 mono_mb_emit_stloc (mb, 0);
6106
6107 /* set dst_ptr */
6108 mono_mb_emit_ldloc (mb, conv_arg);
6109 mono_mb_emit_stloc (mb, 1);
6110
6111 /* emit valuetype conversion code */
6112 emit_struct_conv (mb, klass, FALSE);
6113
6114 mono_mb_patch_branch (mb, pos);
6115 }
6116 break;
6117
6118 case MARSHAL_ACTION_CONV_OUT:
6119 if (spec && spec->native == MONO_NATIVE_STRUCT) {
6120 static MonoMethod *variant_clear = NULL;
6121 static MonoMethod *get_object_for_native_variant = NULL;
6122 if (!variant_clear)
6123 variant_clear = mono_class_get_method_from_name (mono_defaults.variant_class, "Clear", 0);
6124 if (!get_object_for_native_variant)
6125 get_object_for_native_variant = mono_class_get_method_from_name (mono_defaults.marshal_class, "GetObjectForNativeVariant", 1);
6126 if (t->byref) {
6127 mono_mb_emit_ldarg (mb, argnum);
6128 mono_mb_emit_ldloc_addr (mb, conv_arg);
6129 mono_mb_emit_managed_call (mb, get_object_for_native_variant, NULL);
6130 mono_mb_emit_byte (mb, CEE_STIND_REF);
6131 }
6132
6133 mono_mb_emit_ldloc_addr (mb, conv_arg);
6134 mono_mb_emit_managed_call (mb, variant_clear, NULL);
6135 break;
6136 }
6137
6138 if (spec && (spec->native == MONO_NATIVE_IUNKNOWN ||
6139 spec->native == MONO_NATIVE_IDISPATCH ||
6140 spec->native == MONO_NATIVE_INTERFACE)) {
6141 if (t->byref && (t->attrs & PARAM_ATTRIBUTE_OUT)) {
6142 static MonoClass* com_interop_proxy_class = NULL;
6143 static MonoMethod* com_interop_proxy_get_proxy = NULL;
6144 static MonoMethod* get_transparent_proxy = NULL;
6145 int real_proxy;
6146 guint32 pos_failed = 0;
6147
6148 mono_mb_emit_ldarg (mb, argnum);
6149 mono_mb_emit_byte (mb, CEE_LDNULL);
6150 mono_mb_emit_byte (mb, CEE_STIND_REF);
6151
6152 mono_mb_emit_ldloc (mb, conv_arg);
6153 pos_failed = mono_mb_emit_short_branch (mb, CEE_BRFALSE_S);
6154
6155 if (!com_interop_proxy_class)
6156 com_interop_proxy_class = mono_class_from_name (mono_defaults.corlib, "Mono.Interop", "ComInteropProxy");
6157 if (!com_interop_proxy_get_proxy)
6158 com_interop_proxy_get_proxy = mono_class_get_method_from_name_flags (com_interop_proxy_class, "GetProxy", 2, METHOD_ATTRIBUTE_PRIVATE);
6159 if (!get_transparent_proxy)
6160 get_transparent_proxy = mono_class_get_method_from_name (mono_defaults.real_proxy_class, "GetTransparentProxy", 0);
6161
6162 real_proxy = mono_mb_add_local (mb, &com_interop_proxy_class->byval_arg);
6163
6164 mono_mb_emit_ldloc (mb, conv_arg);
6165 mono_mb_emit_ptr (mb, &mono_defaults.com_object_class->byval_arg);
6166 mono_mb_emit_icall (mb, type_from_handle);
6167 mono_mb_emit_managed_call (mb, com_interop_proxy_get_proxy, NULL);
6168 mono_mb_emit_stloc (mb, real_proxy);
6169
6170
6171 mono_mb_emit_ldarg (mb, argnum);
6172 mono_mb_emit_ldloc (mb, real_proxy);
6173 mono_mb_emit_managed_call (mb, get_transparent_proxy, NULL);
6174 if (klass && klass != mono_defaults.object_class)
6175 mono_mb_emit_op (mb, CEE_CASTCLASS, klass);
6176 mono_mb_emit_byte (mb, CEE_STIND_REF);
6177
6178 // case if null
6179 mono_mb_patch_short_branch (mb, pos_failed);
6180 }
6181 break;
6182 }
6183 if (klass == mono_defaults.stringbuilder_class) {
6184 gboolean need_free;
6185 MonoMarshalNative encoding;
6186 MonoMarshalConv conv;
6187
6188 encoding = mono_marshal_get_string_encoding (m->piinfo, spec);
6189 conv = mono_marshal_get_ptr_to_stringbuilder_conv (m->piinfo, spec, &need_free);
6190
6191 g_assert (!t->byref);
6192 g_assert (encoding != -1);
6193
6194 mono_mb_emit_ldarg (mb, argnum);
6195 mono_mb_emit_ldloc (mb, conv_arg);
6196
6197 mono_mb_emit_icall (mb, conv_to_icall (conv));
6198
6199 if (need_free) {
6200 mono_mb_emit_ldloc (mb, conv_arg);
6201 mono_mb_emit_icall (mb, mono_marshal_free);
6202 }
6203 break;
6204 }
6205
6206 if (klass->delegate)
6207 break;
6208
6209 if (t->byref && (t->attrs & PARAM_ATTRIBUTE_OUT)) {
6210 /* allocate a new object */
6211 mono_mb_emit_ldarg (mb, argnum);
6212 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
6213 mono_mb_emit_op (mb, CEE_MONO_NEWOBJ, t->data.klass);
6214 mono_mb_emit_byte (mb, CEE_STIND_REF);
6215 }
6216
6217 /* dst = *argument */
6218 mono_mb_emit_ldarg (mb, argnum);
6219
6220 if (t->byref)
6221 mono_mb_emit_byte (mb, CEE_LDIND_I);
6222
6223 mono_mb_emit_stloc (mb, 1);
6224
6225 mono_mb_emit_ldloc (mb, 1);
6226 pos = mono_mb_emit_branch (mb, CEE_BRFALSE);
6227
6228 if (t->byref || (t->attrs & PARAM_ATTRIBUTE_OUT)) {
6229 mono_mb_emit_ldloc (mb, 1);
6230 mono_mb_emit_icon (mb, sizeof (MonoObject));
6231 mono_mb_emit_byte (mb, CEE_ADD);
6232 mono_mb_emit_stloc (mb, 1);
6233
6234 /* src = tmp_locals [i] */
6235 mono_mb_emit_ldloc (mb, conv_arg);
6236 mono_mb_emit_stloc (mb, 0);
6237
6238 /* emit valuetype conversion code */
6239 emit_struct_conv (mb, t->data.klass, TRUE);
6240
6241 /* Free the structure returned by the native code */
6242 emit_struct_free (mb, klass, conv_arg);
6243
6244 if (m->orig_conv_args [argnum]) {
6245 /*
6246 * If the native function changed the pointer, then free
6247 * the original structure plus the new pointer.
6248 */
6249 mono_mb_emit_ldloc (mb, m->orig_conv_args [argnum]);
6250 mono_mb_emit_ldloc (mb, conv_arg);
6251 pos2 = mono_mb_emit_branch (mb, CEE_BEQ);
6252
6253 if (!(t->attrs & PARAM_ATTRIBUTE_OUT)) {
6254 g_assert (m->orig_conv_args [argnum]);
6255
6256 emit_struct_free (mb, klass, m->orig_conv_args [argnum]);
6257 }
6258
6259 mono_mb_emit_ldloc (mb, conv_arg);
6260 mono_mb_emit_icall (mb, g_free);
6261
6262 mono_mb_patch_branch (mb, pos2);
6263 }
6264 }
6265 else
6266 /* Free the original structure passed to native code */
6267 emit_struct_free (mb, klass, conv_arg);
6268
6269 mono_mb_patch_branch (mb, pos);
6270 break;
6271
6272 case MARSHAL_ACTION_PUSH:
6273 if (t->byref)
6274 mono_mb_emit_ldloc_addr (mb, conv_arg);
6275 else
6276 mono_mb_emit_ldloc (mb, conv_arg);
6277 break;
6278
6279 case MARSHAL_ACTION_CONV_RESULT:
6280 if (klass->delegate) {
6281 g_assert (!t->byref);
6282 mono_mb_emit_stloc (mb, 0);
6283 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
6284 mono_mb_emit_op (mb, CEE_MONO_CLASSCONST, klass);
6285 mono_mb_emit_ldloc (mb, 0);
6286 mono_mb_emit_icall (mb, conv_to_icall (MONO_MARSHAL_CONV_FTN_DEL));
6287 mono_mb_emit_stloc (mb, 3);
6288 } else if (spec && (spec->native == MONO_NATIVE_IUNKNOWN ||
6289 spec->native == MONO_NATIVE_IDISPATCH ||
6290 spec->native == MONO_NATIVE_INTERFACE)) {
6291 char *msg = g_strdup ("Marshalling of COM Objects is not yet implemented.");
6292 mono_mb_emit_exception_marshal_directive (mb, msg);
6293 } else {
6294 /* set src */
6295 mono_mb_emit_stloc (mb, 0);
6296
6297 /* Make a copy since emit_conv modifies local 0 */
6298 loc = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
6299 mono_mb_emit_ldloc (mb, 0);
6300 mono_mb_emit_stloc (mb, loc);
6301
6302 mono_mb_emit_byte (mb, CEE_LDNULL);
6303 mono_mb_emit_stloc (mb, 3);
6304
6305 mono_mb_emit_ldloc (mb, 0);
6306 pos = mono_mb_emit_branch (mb, CEE_BRFALSE);
6307
6308 /* allocate result object */
6309
6310 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
6311 mono_mb_emit_op (mb, CEE_MONO_NEWOBJ, klass);
6312 mono_mb_emit_stloc (mb, 3);
6313
6314 /* set dst */
6315
6316 mono_mb_emit_ldloc (mb, 3);
6317 mono_mb_emit_ldflda (mb, sizeof (MonoObject));
6318 mono_mb_emit_stloc (mb, 1);
6319
6320 /* emit conversion code */
6321 emit_struct_conv (mb, klass, TRUE);
6322
6323 emit_struct_free (mb, klass, loc);
6324
6325 /* Free the pointer allocated by unmanaged code */
6326 mono_mb_emit_ldloc (mb, loc);
6327 mono_mb_emit_icall (mb, g_free);
6328 mono_mb_patch_branch (mb, pos);
6329 }
6330 break;
6331
6332 case MARSHAL_ACTION_MANAGED_CONV_IN:
6333 conv_arg = mono_mb_add_local (mb, &klass->byval_arg);
6334
6335 if (klass->delegate) {
6336 g_assert (!t->byref);
6337 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
6338 mono_mb_emit_op (mb, CEE_MONO_CLASSCONST, klass);
6339 mono_mb_emit_ldarg (mb, argnum);
6340 mono_mb_emit_icall (mb, conv_to_icall (MONO_MARSHAL_CONV_FTN_DEL));
6341 mono_mb_emit_stloc (mb, conv_arg);
6342 break;
6343 }
6344
6345 /* The class can not have an automatic layout */
6346 if ((klass->flags & TYPE_ATTRIBUTE_LAYOUT_MASK) == TYPE_ATTRIBUTE_AUTO_LAYOUT) {
6347 mono_mb_emit_auto_layout_exception (mb, klass);
6348 break;
6349 }
6350
6351 if (t->attrs & PARAM_ATTRIBUTE_OUT) {
6352 mono_mb_emit_byte (mb, CEE_LDNULL);
6353 mono_mb_emit_stloc (mb, conv_arg);
6354 break;
6355 }
6356
6357 /* Set src */
6358 mono_mb_emit_ldarg (mb, argnum);
6359 if (t->byref) {
6360 int pos2;
6361
6362 /* Check for NULL and raise an exception */
6363 pos2 = mono_mb_emit_branch (mb, CEE_BRTRUE);
6364
6365 mono_mb_emit_exception (mb, "ArgumentNullException", NULL);
6366
6367 mono_mb_patch_branch (mb, pos2);
6368 mono_mb_emit_ldarg (mb, argnum);
6369 mono_mb_emit_byte (mb, CEE_LDIND_I);
6370 }
6371
6372 mono_mb_emit_stloc (mb, 0);
6373
6374 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
6375 mono_mb_emit_stloc (mb, conv_arg);
6376
6377 mono_mb_emit_ldloc (mb, 0);
6378 pos = mono_mb_emit_branch (mb, CEE_BRFALSE);
6379
6380 /* Create and set dst */
6381 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
6382 mono_mb_emit_op (mb, CEE_MONO_NEWOBJ, klass);
6383 mono_mb_emit_stloc (mb, conv_arg);
6384 mono_mb_emit_ldloc (mb, conv_arg);
6385 mono_mb_emit_ldflda (mb, sizeof (MonoObject));
6386 mono_mb_emit_stloc (mb, 1);
6387
6388 /* emit valuetype conversion code */
6389 emit_struct_conv (mb, klass, TRUE);
6390
6391 mono_mb_patch_branch (mb, pos);
6392 break;
6393
6394 case MARSHAL_ACTION_MANAGED_CONV_OUT:
6395 if (t->byref) {
6396 /* Check for null */
6397 mono_mb_emit_ldloc (mb, conv_arg);
6398 pos = mono_mb_emit_branch (mb, CEE_BRTRUE);
6399 mono_mb_emit_ldarg (mb, argnum);
6400 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
6401 mono_mb_emit_byte (mb, CEE_STIND_REF);
6402 pos2 = mono_mb_emit_branch (mb, CEE_BR);
6403
6404 mono_mb_patch_branch (mb, pos);
6405
6406 /* Set src */
6407 mono_mb_emit_ldloc (mb, conv_arg);
6408 mono_mb_emit_ldflda (mb, sizeof (MonoObject));
6409 mono_mb_emit_stloc (mb, 0);
6410
6411 /* Allocate and set dest */
6412 mono_mb_emit_icon (mb, mono_class_native_size (klass, NULL));
6413 mono_mb_emit_byte (mb, CEE_CONV_I);
6414 mono_mb_emit_icall (mb, mono_marshal_alloc);
6415 mono_mb_emit_stloc (mb, 1);
6416
6417 /* Update argument pointer */
6418 mono_mb_emit_ldarg (mb, argnum);
6419 mono_mb_emit_ldloc (mb, 1);
6420 mono_mb_emit_byte (mb, CEE_STIND_I);
6421
6422 /* emit valuetype conversion code */
6423 emit_struct_conv (mb, klass, FALSE);
6424
6425 mono_mb_patch_branch (mb, pos2);
6426 } else {
6427 /* byval [Out] marshalling */
6428
6429 /* FIXME: Handle null */
6430
6431 /* Set src */
6432 mono_mb_emit_ldloc (mb, conv_arg);
6433 mono_mb_emit_ldflda (mb, sizeof (MonoObject));
6434 mono_mb_emit_stloc (mb, 0);
6435
6436 /* Set dest */
6437 mono_mb_emit_ldarg (mb, argnum);
6438 mono_mb_emit_stloc (mb, 1);
6439
6440 /* emit valuetype conversion code */
6441 emit_struct_conv (mb, klass, FALSE);
6442 }
6443 break;
6444
6445 case MARSHAL_ACTION_MANAGED_CONV_RESULT:
6446 if (klass->delegate) {
6447 mono_mb_emit_icall (mb, conv_to_icall (MONO_MARSHAL_CONV_DEL_FTN));
6448 mono_mb_emit_stloc (mb, 3);
6449 break;
6450 }
6451
6452 /* The class can not have an automatic layout */
6453 if ((klass->flags & TYPE_ATTRIBUTE_LAYOUT_MASK) == TYPE_ATTRIBUTE_AUTO_LAYOUT) {
6454 mono_mb_emit_auto_layout_exception (mb, klass);
6455 break;
6456 }
6457
6458 mono_mb_emit_stloc (mb, 0);
6459 /* Check for null */
6460 mono_mb_emit_ldloc (mb, 0);
6461 pos = mono_mb_emit_branch (mb, CEE_BRTRUE);
6462 mono_mb_emit_byte (mb, CEE_LDNULL);
6463 mono_mb_emit_stloc (mb, 3);
6464 pos2 = mono_mb_emit_branch (mb, CEE_BR);
6465
6466 mono_mb_patch_branch (mb, pos);
6467
6468 /* Set src */
6469 mono_mb_emit_ldloc (mb, 0);
6470 mono_mb_emit_ldflda (mb, sizeof (MonoObject));
6471 mono_mb_emit_stloc (mb, 0);
6472
6473 /* Allocate and set dest */
6474 mono_mb_emit_icon (mb, mono_class_native_size (klass, NULL));
6475 mono_mb_emit_byte (mb, CEE_CONV_I);
6476 mono_mb_emit_icall (mb, mono_marshal_alloc);
6477 mono_mb_emit_byte (mb, CEE_DUP);
6478 mono_mb_emit_stloc (mb, 1);
6479 mono_mb_emit_stloc (mb, 3);
6480
6481 emit_struct_conv (mb, klass, FALSE);
6482
6483 mono_mb_patch_branch (mb, pos2);
6484 break;
6485
6486 default:
6487 g_assert_not_reached ();
6488 }
6489
6490 return conv_arg;
6491 }
6492
6493 static int
6494 emit_marshal_array (EmitMarshalContext *m, int argnum, MonoType *t,
6495 MonoMarshalSpec *spec,
6496 int conv_arg, MonoType **conv_arg_type,
6497 MarshalAction action)
6498 {
6499 MonoMethodBuilder *mb = m->mb;
6500 MonoClass *klass = mono_class_from_mono_type (t);
6501 gboolean need_convert, need_free;
6502 MonoMarshalNative encoding;
6503
6504 encoding = mono_marshal_get_string_encoding (m->piinfo, spec);
6505
6506 switch (action) {
6507 case MARSHAL_ACTION_CONV_IN:
6508 *conv_arg_type = &mono_defaults.object_class->byval_arg;
6509 conv_arg = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
6510
6511 if (klass->element_class->blittable) {
6512 mono_mb_emit_ldarg (mb, argnum);
6513 if (t->byref)
6514 mono_mb_emit_byte (mb, CEE_LDIND_I);
6515 mono_mb_emit_icall (mb, conv_to_icall (MONO_MARSHAL_CONV_ARRAY_LPARRAY));
6516 mono_mb_emit_stloc (mb, conv_arg);
6517 } else {
6518 MonoClass *eklass;
6519 guint32 label1, label2, label3;
6520 int index_var, src_var, dest_ptr, esize;
6521 MonoMarshalConv conv;
6522 gboolean is_string = FALSE;
6523
6524 dest_ptr = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
6525
6526 eklass = klass->element_class;
6527
6528 if (eklass == mono_defaults.string_class) {
6529 is_string = TRUE;
6530 conv = mono_marshal_get_string_to_ptr_conv (m->piinfo, spec);
6531 }
6532 else if (eklass == mono_defaults.stringbuilder_class) {
6533 is_string = TRUE;
6534 conv = mono_marshal_get_stringbuilder_to_ptr_conv (m->piinfo, spec);
6535 }
6536 else
6537 conv = -1;
6538
6539 src_var = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
6540 mono_mb_emit_ldarg (mb, argnum);
6541 if (t->byref)
6542 mono_mb_emit_byte (mb, CEE_LDIND_I);
6543 mono_mb_emit_stloc (mb, src_var);
6544
6545 /* Check null */
6546 mono_mb_emit_ldloc (mb, src_var);
6547 mono_mb_emit_stloc (mb, conv_arg);
6548 mono_mb_emit_ldloc (mb, src_var);
6549 label1 = mono_mb_emit_branch (mb, CEE_BRFALSE);
6550
6551 if (is_string) {
6552 if (conv == -1) {
6553 char *msg = g_strdup_printf ("string/stringbuilder marshalling conversion %d not implemented", encoding);
6554 MonoException *exc = mono_get_exception_not_implemented (msg);
6555 g_warning (msg);
6556 g_free (msg);
6557 mono_raise_exception (exc);
6558 }
6559 }
6560
6561 if (is_string)
6562 esize = sizeof (gpointer);
6563 else
6564 esize = mono_class_native_size (eklass, NULL);
6565
6566 /* allocate space for the native struct and store the address */
6567 mono_mb_emit_icon (mb, esize);
6568 mono_mb_emit_ldloc (mb, src_var);
6569 mono_mb_emit_byte (mb, CEE_LDLEN);
6570
6571 if (eklass == mono_defaults.string_class) {
6572 /* Make the array bigger for the terminating null */
6573 mono_mb_emit_byte (mb, CEE_LDC_I4_1);
6574 mono_mb_emit_byte (mb, CEE_ADD);
6575 }
6576 mono_mb_emit_byte (mb, CEE_MUL);
6577 mono_mb_emit_byte (mb, CEE_PREFIX1);
6578 mono_mb_emit_byte (mb, CEE_LOCALLOC);
6579 mono_mb_emit_stloc (mb, conv_arg);
6580
6581 mono_mb_emit_ldloc (mb, conv_arg);
6582 mono_mb_emit_stloc (mb, dest_ptr);
6583
6584 /* Emit marshalling loop */
6585 index_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
6586 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
6587 mono_mb_emit_stloc (mb, index_var);
6588 label2 = mb->pos;
6589 mono_mb_emit_ldloc (mb, index_var);
6590 mono_mb_emit_ldloc (mb, src_var);
6591 mono_mb_emit_byte (mb, CEE_LDLEN);
6592 label3 = mono_mb_emit_branch (mb, CEE_BGE);
6593
6594 /* Emit marshalling code */
6595
6596 if (is_string) {
6597 mono_mb_emit_ldloc (mb, dest_ptr);
6598 mono_mb_emit_ldloc (mb, src_var);
6599 mono_mb_emit_ldloc (mb, index_var);
6600 mono_mb_emit_byte (mb, CEE_LDELEM_REF);
6601 mono_mb_emit_icall (mb, conv_to_icall (conv));
6602 mono_mb_emit_byte (mb, CEE_STIND_I);
6603 } else {
6604 /* set the src_ptr */
6605 mono_mb_emit_ldloc (mb, src_var);
6606 mono_mb_emit_ldloc (mb, index_var);
6607 mono_mb_emit_op (mb, CEE_LDELEMA, eklass);
6608 mono_mb_emit_stloc (mb, 0);
6609
6610 /* set dst_ptr */
6611 mono_mb_emit_ldloc (mb, dest_ptr);
6612 mono_mb_emit_stloc (mb, 1);
6613
6614 /* emit valuetype conversion code */
6615 emit_struct_conv (mb, eklass, FALSE);
6616 }
6617
6618 mono_mb_emit_add_to_local (mb, index_var, 1);
6619 mono_mb_emit_add_to_local (mb, dest_ptr, esize);
6620
6621 mono_mb_emit_byte (mb, CEE_BR);
6622 mono_mb_emit_i4 (mb, label2 - (mb->pos + 4));
6623
6624 mono_mb_patch_branch (mb, label3);
6625
6626 if (eklass == mono_defaults.string_class) {
6627 /* Null terminate */
6628 mono_mb_emit_ldloc (mb, dest_ptr);
6629 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
6630 mono_mb_emit_byte (mb, CEE_STIND_REF);
6631 }
6632
6633 mono_mb_patch_branch (mb, label1);
6634 }
6635
6636 break;
6637
6638 case MARSHAL_ACTION_CONV_OUT:
6639 /* Unicode character arrays are implicitly marshalled as [Out] under MS.NET */
6640 need_convert = ((klass->element_class == mono_defaults.char_class) && (encoding == MONO_NATIVE_LPWSTR)) || (klass->element_class == mono_defaults.stringbuilder_class) || (t->attrs & PARAM_ATTRIBUTE_OUT);
6641 need_free = mono_marshal_need_free (&klass->element_class->byval_arg,
6642 m->piinfo, spec);
6643
6644 if (need_convert || need_free) {
6645 /* FIXME: Optimize blittable case */
6646 MonoClass *eklass;
6647 guint32 label1, label2, label3;
6648 int index_var, src_ptr, loc, esize;
6649
6650 eklass = klass->element_class;
6651 if ((eklass == mono_defaults.stringbuilder_class) || (eklass == mono_defaults.string_class))
6652 esize = sizeof (gpointer);
6653 else
6654 esize = mono_class_native_size (eklass, NULL);
6655 src_ptr = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
6656 loc = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
6657
6658 /* Check null */
6659 mono_mb_emit_ldarg (mb, argnum);
6660 if (t->byref)
6661 mono_mb_emit_byte (mb, CEE_LDIND_I);
6662 label1 = mono_mb_emit_branch (mb, CEE_BRFALSE);
6663
6664 mono_mb_emit_ldloc (mb, conv_arg);
6665 mono_mb_emit_stloc (mb, src_ptr);
6666
6667 /* Emit marshalling loop */
6668 index_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
6669 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
6670 mono_mb_emit_stloc (mb, index_var);
6671 label2 = mb->pos;
6672 mono_mb_emit_ldloc (mb, index_var);
6673 mono_mb_emit_ldarg (mb, argnum);
6674 if (t->byref)
6675 mono_mb_emit_byte (mb, CEE_LDIND_REF);
6676 mono_mb_emit_byte (mb, CEE_LDLEN);
6677 label3 = mono_mb_emit_branch (mb, CEE_BGE);
6678
6679 /* Emit marshalling code */
6680
6681 if (eklass == mono_defaults.stringbuilder_class) {
6682 gboolean need_free2;
6683 MonoMarshalConv conv = mono_marshal_get_ptr_to_stringbuilder_conv (m->piinfo, spec, &need_free2);
6684
6685 g_assert (conv != -1);
6686
6687 /* dest */
6688 mono_mb_emit_ldarg (mb, argnum);
6689 if (t->byref)
6690 mono_mb_emit_byte (mb, CEE_LDIND_I);
6691 mono_mb_emit_ldloc (mb, index_var);
6692 mono_mb_emit_byte (mb, CEE_LDELEM_REF);
6693
6694 /* src */
6695 mono_mb_emit_ldloc (mb, src_ptr);
6696 mono_mb_emit_byte (mb, CEE_LDIND_I);
6697
6698 mono_mb_emit_icall (mb, conv_to_icall (conv));
6699
6700 if (need_free) {
6701 /* src */
6702 mono_mb_emit_ldloc (mb, src_ptr);
6703 mono_mb_emit_byte (mb, CEE_LDIND_I);
6704
6705 mono_mb_emit_icall (mb, mono_marshal_free);
6706 }
6707 }
6708 else if (eklass == mono_defaults.string_class) {
6709 if (need_free) {
6710 /* src */
6711 mono_mb_emit_ldloc (mb, src_ptr);
6712 mono_mb_emit_byte (mb, CEE_LDIND_I);
6713
6714 mono_mb_emit_icall (mb, mono_marshal_free);
6715 }
6716 }
6717 else {
6718 if (need_convert) {
6719 /* set the src_ptr */
6720 mono_mb_emit_ldloc (mb, src_ptr);
6721 mono_mb_emit_stloc (mb, 0);
6722
6723 /* set dst_ptr */
6724 mono_mb_emit_ldarg (mb, argnum);
6725 if (t->byref)
6726 mono_mb_emit_byte (mb, CEE_LDIND_I);
6727 mono_mb_emit_ldloc (mb, index_var);
6728 mono_mb_emit_op (mb, CEE_LDELEMA, eklass);
6729 mono_mb_emit_stloc (mb, 1);
6730
6731 /* emit valuetype conversion code */
6732 emit_struct_conv (mb, eklass, TRUE);
6733 }
6734
6735 if (need_free) {
6736 mono_mb_emit_ldloc (mb, src_ptr);
6737 mono_mb_emit_stloc (mb, loc);
6738 mono_mb_emit_ldloc (mb, loc);
6739
6740 emit_struct_free (mb, eklass, loc);
6741 }
6742 }
6743
6744 mono_mb_emit_add_to_local (mb, index_var, 1);
6745 mono_mb_emit_add_to_local (mb, src_ptr, esize);
6746
6747 mono_mb_emit_byte (mb, CEE_BR);
6748 mono_mb_emit_i4 (mb, label2 - (mb->pos + 4));
6749
6750 mono_mb_patch_branch (mb, label1);
6751 mono_mb_patch_branch (mb, label3);
6752 }
6753 break;
6754
6755 case MARSHAL_ACTION_PUSH:
6756 if (t->byref)
6757 mono_mb_emit_ldloc_addr (mb, conv_arg);
6758 else
6759 mono_mb_emit_ldloc (mb, conv_arg);
6760 break;
6761
6762 case MARSHAL_ACTION_CONV_RESULT:
6763 /* fixme: we need conversions here */
6764 mono_mb_emit_stloc (mb, 3);
6765 break;
6766
6767 case MARSHAL_ACTION_MANAGED_CONV_IN: {
6768 MonoClass *eklass;
6769 guint32 label1, label2, label3;
6770 int index_var, src_ptr, loc, esize, param_num, num_elem;
6771 MonoMarshalConv conv;
6772 gboolean is_string = FALSE;
6773
6774 conv_arg = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
6775 *conv_arg_type = &mono_defaults.int_class->byval_arg;
6776
6777 if (t->byref) {
6778 char *msg = g_strdup ("Byref array marshalling to managed code is not implemented.");
6779 mono_mb_emit_exception_marshal_directive (mb, msg);
6780 return conv_arg;
6781 }
6782 if (!spec) {
6783 char *msg = g_strdup ("[MarshalAs] attribute required to marshal arrays to managed code.");
6784 mono_mb_emit_exception_marshal_directive (mb, msg);
6785 return conv_arg;
6786 }
6787 if (spec->native != MONO_NATIVE_LPARRAY) {
6788 char *msg = g_strdup ("Non LPArray marshalling of arrays to managed code is not implemented.");
6789 mono_mb_emit_exception_marshal_directive (mb, msg);
6790 return conv_arg;
6791 }
6792
6793 /* FIXME: t is from the method which is wrapped, not the delegate type */
6794 /* g_assert (t->attrs & PARAM_ATTRIBUTE_IN); */
6795
6796 param_num = spec->data.array_data.param_num;
6797 num_elem = spec->data.array_data.num_elem;
6798 if (spec->data.array_data.elem_mult == 0)
6799 /* param_num is not specified */
6800 param_num = -1;
6801
6802 if (param_num == -1) {
6803 if (num_elem <= 0) {
6804 char *msg = g_strdup ("Either SizeConst or SizeParamIndex should be specified when marshalling arrays to managed code.");
6805 mono_mb_emit_exception_marshal_directive (mb, msg);
6806 return conv_arg;
6807 }
6808 }
6809
6810 /* FIXME: Optimize blittable case */
6811
6812 eklass = klass->element_class;
6813 if (eklass == mono_defaults.string_class) {
6814 is_string = TRUE;
6815 conv = mono_marshal_get_ptr_to_string_conv (m->piinfo, spec, &need_free);
6816 }
6817 else if (eklass == mono_defaults.stringbuilder_class) {
6818 is_string = TRUE;
6819 conv = mono_marshal_get_ptr_to_stringbuilder_conv (m->piinfo, spec, &need_free);
6820 }
6821 else
6822 conv = -1;
6823
6824 mono_marshal_load_type_info (eklass);
6825
6826 if (is_string)
6827 esize = sizeof (gpointer);
6828 else
6829 esize = mono_class_native_size (eklass, NULL);
6830 src_ptr = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
6831 loc = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
6832
6833 mono_mb_emit_byte (mb, CEE_LDNULL);
6834 mono_mb_emit_stloc (mb, conv_arg);
6835
6836 /* Check param index */
6837 if (param_num != -1) {
6838 if (param_num >= m->sig->param_count) {
6839 char *msg = g_strdup ("Array size control parameter index is out of range.");
6840 mono_mb_emit_exception_marshal_directive (mb, msg);
6841 return conv_arg;
6842 }
6843 switch (m->sig->params [param_num]->type) {
6844 case MONO_TYPE_I1:
6845 case MONO_TYPE_U1:
6846 case MONO_TYPE_I2:
6847 case MONO_TYPE_U2:
6848 case MONO_TYPE_I4:
6849 case MONO_TYPE_U4:
6850 case MONO_TYPE_I:
6851 case MONO_TYPE_U:
6852 case MONO_TYPE_I8:
6853 case MONO_TYPE_U8:
6854 break;
6855 default: {
6856 char *msg = g_strdup ("Array size control parameter must be an integral type.");
6857 mono_mb_emit_exception_marshal_directive (mb, msg);
6858 return conv_arg;
6859 }
6860 }
6861 }
6862
6863 /* Check null */
6864 mono_mb_emit_ldarg (mb, argnum);
6865 label1 = mono_mb_emit_branch (mb, CEE_BRFALSE);
6866
6867 mono_mb_emit_ldarg (mb, argnum);
6868 mono_mb_emit_stloc (mb, src_ptr);
6869
6870 /* Create managed array */
6871 /*
6872 * The LPArray marshalling spec says that sometimes param_num starts
6873 * from 1, sometimes it starts from 0. But MS seems to allways start
6874 * from 0.
6875 */
6876
6877 if (param_num == -1)
6878 mono_mb_emit_icon (mb, num_elem);
6879 else {
6880 /* FIXME: Add the two together */
6881 mono_mb_emit_ldarg (mb, param_num);
6882 if (num_elem > 0) {
6883 mono_mb_emit_icon (mb, num_elem);
6884 mono_mb_emit_byte (mb, CEE_ADD);
6885 }
6886 }
6887
6888 mono_mb_emit_op (mb, CEE_NEWARR, eklass);
6889 mono_mb_emit_stloc (mb, conv_arg);
6890
6891 if (eklass->blittable) {
6892 mono_mb_emit_ldloc (mb, conv_arg);
6893 mono_mb_emit_byte (mb, CEE_CONV_I);
6894 mono_mb_emit_icon (mb, G_STRUCT_OFFSET (MonoArray, vector));
6895 mono_mb_emit_byte (mb, CEE_ADD);
6896 mono_mb_emit_ldarg (mb, argnum);
6897 mono_mb_emit_ldloc (mb, conv_arg);
6898 mono_mb_emit_byte (mb, CEE_LDLEN);
6899 mono_mb_emit_icon (mb, esize);
6900 mono_mb_emit_byte (mb, CEE_MUL);
6901 mono_mb_emit_byte (mb, CEE_PREFIX1);
6902 mono_mb_emit_byte (mb, CEE_CPBLK);
6903 break;
6904 }
6905
6906 /* Emit marshalling loop */
6907 index_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
6908 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
6909 mono_mb_emit_stloc (mb, index_var);
6910 label2 = mb->pos;
6911 mono_mb_emit_ldloc (mb, index_var);
6912 mono_mb_emit_ldloc (mb, conv_arg);
6913 mono_mb_emit_byte (mb, CEE_LDLEN);
6914 label3 = mono_mb_emit_branch (mb, CEE_BGE);
6915
6916 /* Emit marshalling code */
6917 if (is_string) {
6918 g_assert (conv != -1);
6919
6920 mono_mb_emit_ldloc (mb, conv_arg);
6921 mono_mb_emit_ldloc (mb, index_var);
6922
6923 mono_mb_emit_ldloc (mb, src_ptr);
6924 mono_mb_emit_byte (mb, CEE_LDIND_I);
6925
6926 mono_mb_emit_icall (mb, conv_to_icall (conv));
6927 mono_mb_emit_byte (mb, CEE_STELEM_REF);
6928 }
6929 else {
6930 char *msg = g_strdup ("Marshalling of non-string and non-blittable arrays to managed code is not implemented.");
6931 mono_mb_emit_exception_marshal_directive (mb, msg);
6932 return conv_arg;
6933 }
6934
6935 mono_mb_emit_add_to_local (mb, index_var, 1);
6936 mono_mb_emit_add_to_local (mb, src_ptr, esize);
6937
6938 mono_mb_emit_byte (mb, CEE_BR);
6939 mono_mb_emit_i4 (mb, label2 - (mb->pos + 4));
6940
6941 mono_mb_patch_branch (mb, label1);
6942 mono_mb_patch_branch (mb, label3);
6943
6944 break;
6945 }
6946 case MARSHAL_ACTION_MANAGED_CONV_OUT: {
6947 MonoClass *eklass;
6948 guint32 label1, label2, label3;
6949 int index_var, dest_ptr, loc, esize, param_num, num_elem;
6950 MonoMarshalConv conv;
6951 gboolean is_string = FALSE;
6952
6953 if (!spec)
6954 /* Already handled in CONV_IN */
6955 break;
6956
6957 /* These are already checked in CONV_IN */
6958 g_assert (!t->byref);
6959 g_assert (spec->native == MONO_NATIVE_LPARRAY);
6960 g_assert (t->attrs & PARAM_ATTRIBUTE_OUT);
6961
6962 param_num = spec->data.array_data.param_num;
6963 num_elem = spec->data.array_data.num_elem;
6964
6965 if (spec->data.array_data.elem_mult == 0)
6966 /* param_num is not specified */
6967 param_num = -1;
6968
6969 if (param_num == -1) {
6970 if (num_elem <= 0) {
6971 g_assert_not_reached ();
6972 }
6973 }
6974
6975 /* FIXME: Optimize blittable case */
6976
6977 eklass = klass->element_class;
6978 if (eklass == mono_defaults.string_class) {
6979 is_string = TRUE;
6980 conv = mono_marshal_get_string_to_ptr_conv (m->piinfo, spec);
6981 }
6982 else if (eklass == mono_defaults.stringbuilder_class) {
6983 is_string = TRUE;
6984 conv = mono_marshal_get_stringbuilder_to_ptr_conv (m->piinfo, spec);
6985 }
6986 else
6987 conv = -1;
6988
6989 mono_marshal_load_type_info (eklass);
6990
6991 if (is_string)
6992 esize = sizeof (gpointer);
6993 else
6994 esize = mono_class_native_size (eklass, NULL);
6995
6996 dest_ptr = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
6997 loc = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
6998
6999 /* Check null */
7000 mono_mb_emit_ldloc (mb, conv_arg);
7001 label1 = mono_mb_emit_branch (mb, CEE_BRFALSE);
7002
7003 mono_mb_emit_ldarg (mb, argnum);
7004 mono_mb_emit_stloc (mb, dest_ptr);
7005
7006 if (eklass->blittable) {
7007 /* dest */
7008 mono_mb_emit_ldarg (mb, argnum);
7009 /* src */
7010 mono_mb_emit_ldloc (mb, conv_arg);
7011 mono_mb_emit_byte (mb, CEE_CONV_I);
7012 mono_mb_emit_icon (mb, G_STRUCT_OFFSET (MonoArray, vector));
7013 mono_mb_emit_byte (mb, CEE_ADD);
7014 /* length */
7015 mono_mb_emit_ldloc (mb, conv_arg);
7016 mono_mb_emit_byte (mb, CEE_LDLEN);
7017 mono_mb_emit_icon (mb, esize);
7018 mono_mb_emit_byte (mb, CEE_MUL);
7019 mono_mb_emit_byte (mb, CEE_PREFIX1);
7020 mono_mb_emit_byte (mb, CEE_CPBLK);
7021 break;
7022 }
7023
7024 /* Emit marshalling loop */
7025 index_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
7026 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
7027 mono_mb_emit_stloc (mb, index_var);
7028 label2 = mb->pos;
7029 mono_mb_emit_ldloc (mb, index_var);
7030 mono_mb_emit_ldloc (mb, conv_arg);
7031 mono_mb_emit_byte (mb, CEE_LDLEN);
7032 label3 = mono_mb_emit_branch (mb, CEE_BGE);
7033
7034 /* Emit marshalling code */
7035 if (is_string) {
7036 g_assert (conv != -1);
7037
7038 /* dest */
7039 mono_mb_emit_ldloc (mb, dest_ptr);
7040
7041 /* src */
7042 mono_mb_emit_ldloc (mb, conv_arg);
7043 mono_mb_emit_ldloc (mb, index_var);
7044
7045 mono_mb_emit_byte (mb, CEE_LDELEM_REF);
7046
7047 mono_mb_emit_icall (mb, conv_to_icall (conv));
7048 mono_mb_emit_byte (mb, CEE_STIND_I);
7049 }
7050 else {
7051 char *msg = g_strdup ("Marshalling of non-string and non-blittable arrays to managed code is not implemented.");
7052 mono_mb_emit_exception_marshal_directive (mb, msg);
7053 return conv_arg;
7054 }
7055
7056 mono_mb_emit_add_to_local (mb, index_var, 1);
7057 mono_mb_emit_add_to_local (mb, dest_ptr, esize);
7058
7059 mono_mb_emit_byte (mb, CEE_BR);
7060 mono_mb_emit_i4 (mb, label2 - (mb->pos + 4));
7061
7062 mono_mb_patch_branch (mb, label1);
7063 mono_mb_patch_branch (mb, label3);
7064
7065 break;
7066 }
7067 case MARSHAL_ACTION_MANAGED_CONV_RESULT: {
7068 MonoClass *eklass;
7069 guint32 label1, label2, label3;
7070 int index_var, src, dest, esize;
7071 MonoMarshalConv conv = -1;
7072 gboolean is_string = FALSE;
7073
7074 g_assert (!t->byref);
7075
7076 eklass = klass->element_class;
7077
7078 mono_marshal_load_type_info (eklass);
7079
7080 if (eklass == mono_defaults.string_class) {
7081 is_string = TRUE;
7082 conv = mono_marshal_get_string_to_ptr_conv (m->piinfo, spec);
7083 }
7084 else {
7085 g_assert_not_reached ();
7086 }
7087
7088 if (is_string)
7089 esize = sizeof (gpointer);
7090 else
7091 esize = mono_class_native_size (eklass, NULL);
7092
7093 src = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
7094 dest = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
7095
7096 mono_mb_emit_stloc (mb, src);
7097 mono_mb_emit_ldloc (mb, src);
7098 mono_mb_emit_stloc (mb, 3);
7099
7100 /* Check for null */
7101 mono_mb_emit_ldloc (mb, src);
7102 label1 = mono_mb_emit_branch (mb, CEE_BRFALSE);
7103
7104 /* Allocate native array */
7105 mono_mb_emit_icon (mb, esize);
7106 mono_mb_emit_ldloc (mb, src);
7107 mono_mb_emit_byte (mb, CEE_LDLEN);
7108
7109 if (eklass == mono_defaults.string_class) {
7110 /* Make the array bigger for the terminating null */
7111 mono_mb_emit_byte (mb, CEE_LDC_I4_1);
7112 mono_mb_emit_byte (mb, CEE_ADD);
7113 }
7114 mono_mb_emit_byte (mb, CEE_MUL);
7115 mono_mb_emit_icall (mb, mono_marshal_alloc);
7116 mono_mb_emit_stloc (mb, dest);
7117 mono_mb_emit_ldloc (mb, dest);
7118 mono_mb_emit_stloc (mb, 3);
7119
7120 /* Emit marshalling loop */
7121 index_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
7122 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
7123 mono_mb_emit_stloc (mb, index_var);
7124 label2 = mb->pos;
7125 mono_mb_emit_ldloc (mb, index_var);
7126 mono_mb_emit_ldloc (mb, src);
7127 mono_mb_emit_byte (mb, CEE_LDLEN);
7128 label3 = mono_mb_emit_branch (mb, CEE_BGE);
7129
7130 /* Emit marshalling code */
7131 if (is_string) {
7132 g_assert (conv != -1);
7133
7134 /* dest */
7135 mono_mb_emit_ldloc (mb, dest);
7136
7137 /* src */
7138 mono_mb_emit_ldloc (mb, src);
7139 mono_mb_emit_ldloc (mb, index_var);
7140
7141 mono_mb_emit_byte (mb, CEE_LDELEM_REF);
7142
7143 mono_mb_emit_icall (mb, conv_to_icall (conv));
7144 mono_mb_emit_byte (mb, CEE_STIND_I);
7145 }
7146 else {
7147 char *msg = g_strdup ("Marshalling of non-string arrays to managed code is not implemented.");
7148 mono_mb_emit_exception_marshal_directive (mb, msg);
7149 return conv_arg;
7150 }
7151
7152 mono_mb_emit_add_to_local (mb, index_var, 1);
7153 mono_mb_emit_add_to_local (mb, dest, esize);
7154
7155 mono_mb_emit_byte (mb, CEE_BR);
7156 mono_mb_emit_i4 (mb, label2 - (mb->pos + 4));
7157
7158 mono_mb_patch_branch (mb, label3);
7159 mono_mb_patch_branch (mb, label1);
7160 break;
7161 }
7162 default:
7163 g_assert_not_reached ();
7164 }
7165
7166 return conv_arg;
7167 }
7168
7169 static int
7170 emit_marshal_boolean (EmitMarshalContext *m, int argnum, MonoType *t,
7171 MonoMarshalSpec *spec,
7172 int conv_arg, MonoType **conv_arg_type,
7173 MarshalAction action)
7174 {
7175 MonoMethodBuilder *mb = m->mb;
7176
7177 switch (action) {
7178 case MARSHAL_ACTION_CONV_IN: {
7179 MonoType *local_type;
7180 int variant_bool = 0;
7181 if (!t->byref)
7182 break;
7183 if (spec == NULL) {
7184 local_type = &mono_defaults.int32_class->byval_arg;
7185 } else {
7186 switch (spec->native) {
7187 case MONO_NATIVE_I1:
7188 local_type = &mono_defaults.byte_class->byval_arg;
7189 break;
7190 case MONO_NATIVE_VARIANTBOOL:
7191 local_type = &mono_defaults.int16_class->byval_arg;
7192 variant_bool = 1;
7193 break;
7194 default:
7195 g_warning ("marshalling bool as native type %x is currently not supported", spec->native);
7196 local_type = &mono_defaults.int32_class->byval_arg;
7197 break;
7198 }
7199 }
7200 *conv_arg_type = &mono_defaults.int_class->byval_arg;
7201 conv_arg = mono_mb_add_local (mb, local_type);
7202 mono_mb_emit_ldarg (mb, argnum);
7203 mono_mb_emit_byte (mb, CEE_LDIND_I1);
7204 if (variant_bool)
7205 mono_mb_emit_byte (mb, CEE_NEG);
7206 mono_mb_emit_stloc (mb, conv_arg);
7207 break;
7208 }
7209
7210 case MARSHAL_ACTION_CONV_OUT:
7211 if (!t->byref)
7212 break;
7213 mono_mb_emit_ldarg (mb, argnum);
7214 mono_mb_emit_ldloc (mb, conv_arg);
7215 if (spec != NULL && spec->native == MONO_NATIVE_VARIANTBOOL)
7216 mono_mb_emit_byte (mb, CEE_NEG);
7217 mono_mb_emit_byte (mb, CEE_STIND_I1);
7218 break;
7219
7220 case MARSHAL_ACTION_PUSH:
7221 if (t->byref)
7222 mono_mb_emit_ldloc_addr (mb, conv_arg);
7223 else
7224 mono_mb_emit_ldarg (mb, argnum);
7225 break;
7226
7227 case MARSHAL_ACTION_CONV_RESULT:
7228 /* maybe we need to make sure that it fits within 8 bits */
7229 mono_mb_emit_stloc (mb, 3);
7230 break;
7231
7232 default:
7233 g_assert_not_reached ();
7234 }
7235
7236 return conv_arg;
7237 }
7238
7239 static int
7240 emit_marshal_ptr (EmitMarshalContext *m, int argnum, MonoType *t,
7241 MonoMarshalSpec *spec, int conv_arg,
7242 MonoType **conv_arg_type, MarshalAction action)
7243 {
7244 MonoMethodBuilder *mb = m->mb;
7245
7246 switch (action) {
7247 case MARSHAL_ACTION_CONV_IN:
7248 if (MONO_TYPE_ISSTRUCT (t->data.type)) {
7249 char *msg = g_strdup_printf ("Can not marshal 'parameter #%d': Pointers can not reference marshaled structures. Use byref instead.", argnum + 1);
7250 mono_mb_emit_exception_marshal_directive (m->mb, msg);
7251 }
7252 break;
7253
7254 case MARSHAL_ACTION_PUSH:
7255 mono_mb_emit_ldarg (mb, argnum);
7256 break;
7257
7258 case MARSHAL_ACTION_CONV_RESULT:
7259 /* no conversions necessary */
7260 mono_mb_emit_stloc (mb, 3);
7261 break;
7262
7263 default:
7264 break;
7265 }
7266
7267 return conv_arg;
7268 }
7269
7270 static int
7271 emit_marshal_char (EmitMarshalContext *m, int argnum, MonoType *t,
7272 MonoMarshalSpec *spec, int conv_arg,
7273 MonoType **conv_arg_type, MarshalAction action)
7274 {
7275 MonoMethodBuilder *mb = m->mb;
7276
7277 switch (action) {
7278 case MARSHAL_ACTION_PUSH:
7279 /* fixme: dont know how to marshal that. We cant simply
7280 * convert it to a one byte UTF8 character, because an
7281 * unicode character may need more that one byte in UTF8 */
7282 mono_mb_emit_ldarg (mb, argnum);
7283 break;
7284
7285 case MARSHAL_ACTION_CONV_RESULT:
7286 /* fixme: we need conversions here */
7287 mono_mb_emit_stloc (mb, 3);
7288 break;
7289
7290 default:
7291 break;
7292 }
7293
7294 return conv_arg;
7295 }
7296
7297 static int
7298 emit_marshal_scalar (EmitMarshalContext *m, int argnum, MonoType *t,
7299 MonoMarshalSpec *spec, int conv_arg,
7300 MonoType **conv_arg_type, MarshalAction action)
7301 {
7302 MonoMethodBuilder *mb = m->mb;
7303
7304 switch (action) {
7305 case MARSHAL_ACTION_PUSH:
7306 mono_mb_emit_ldarg (mb, argnum);
7307 break;
7308
7309 case MARSHAL_ACTION_CONV_RESULT:
7310 /* no conversions necessary */
7311 mono_mb_emit_stloc (mb, 3);
7312 break;
7313
7314 default:
7315 break;
7316 }
7317
7318 return conv_arg;
7319 }
7320
7321 static int
7322 emit_marshal (EmitMarshalContext *m, int argnum, MonoType *t,
7323 MonoMarshalSpec *spec, int conv_arg,
7324 MonoType **conv_arg_type, MarshalAction action)
7325 {
7326 /* Ensure that we have marshalling info for this param */
7327 mono_marshal_load_type_info (mono_class_from_mono_type (t));
7328
7329 if (spec && spec->native == MONO_NATIVE_CUSTOM)
7330 return emit_marshal_custom (m, argnum, t, spec, conv_arg, conv_arg_type, action);
7331
7332 if (spec && spec->native == MONO_NATIVE_ASANY)
7333 return emit_marshal_asany (m, argnum, t, spec, conv_arg, conv_arg_type, action);
7334
7335 switch (t->type) {
7336 case MONO_TYPE_VALUETYPE:
7337 return emit_marshal_vtype (m, argnum, t, spec, conv_arg, conv_arg_type, action);
7338 case MONO_TYPE_STRING:
7339 return emit_marshal_string (m, argnum, t, spec, conv_arg, conv_arg_type, action);
7340 case MONO_TYPE_CLASS:
7341 case MONO_TYPE_OBJECT:
7342 return emit_marshal_object (m, argnum, t, spec, conv_arg, conv_arg_type, action);
7343 case MONO_TYPE_ARRAY:
7344 case MONO_TYPE_SZARRAY:
7345 return emit_marshal_array (m, argnum, t, spec, conv_arg, conv_arg_type, action);
7346 case MONO_TYPE_BOOLEAN:
7347 return emit_marshal_boolean (m, argnum, t, spec, conv_arg, conv_arg_type, action);
7348 case MONO_TYPE_PTR:
7349 return emit_marshal_ptr (m, argnum, t, spec, conv_arg, conv_arg_type, action);
7350 case MONO_TYPE_CHAR:
7351 return emit_marshal_char (m, argnum, t, spec, conv_arg, conv_arg_type, action);
7352 case MONO_TYPE_I1:
7353 case MONO_TYPE_U1:
7354 case MONO_TYPE_I2:
7355 case MONO_TYPE_U2:
7356 case MONO_TYPE_I4:
7357 case MONO_TYPE_U4:
7358 case MONO_TYPE_I:
7359 case MONO_TYPE_U:
7360 case MONO_TYPE_R4:
7361 case MONO_TYPE_R8:
7362 case MONO_TYPE_I8:
7363 case MONO_TYPE_U8:
7364 case MONO_TYPE_FNPTR:
7365 return emit_marshal_scalar (m, argnum, t, spec, conv_arg, conv_arg_type, action);
7366 }
7367
7368 return conv_arg;
7369 }
7370
7371 /**
7372 * mono_marshal_emit_native_wrapper:
7373 * @image: the image to use for looking up custom marshallers
7374 * @sig: The signature of the native function
7375 * @piinfo: Marshalling information
7376 * @mspecs: Marshalling information
7377 * @func: the native function to call
7378 *
7379 * generates IL code for the pinvoke wrapper, the generated code calls @func.
7380 */
7381 static void
7382 mono_marshal_emit_native_wrapper (MonoImage *image, MonoMethodBuilder *mb, MonoMethodSignature *sig, MonoMethodPInvoke *piinfo, MonoMarshalSpec **mspecs, gpointer func)
7383 {
7384 EmitMarshalContext m;
7385 MonoMethodSignature *csig;
7386 MonoClass *klass;
7387 int i, argnum, *tmp_locals;
7388 int type;
7389 static MonoMethodSignature *get_last_error_sig = NULL;
7390
7391 m.mb = mb;
7392 m.piinfo = piinfo;
7393
7394 /* we copy the signature, so that we can set pinvoke to 0 */
7395 csig = signature_dup (mb->method->klass->image, sig);
7396 csig->pinvoke = 1;
7397 m.csig = csig;
7398 m.image = image;
7399
7400 /* we allocate local for use with emit_struct_conv() */
7401 /* allocate local 0 (pointer) src_ptr */
7402 mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
7403 /* allocate local 1 (pointer) dst_ptr */
7404 mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
7405 /* allocate local 2 (boolean) delete_old */
7406 mono_mb_add_local (mb, &mono_defaults.boolean_class->byval_arg);
7407
7408 /* delete_old = FALSE */
7409 mono_mb_emit_icon (mb, 0);
7410 mono_mb_emit_stloc (mb, 2);
7411
7412 if (!MONO_TYPE_IS_VOID(sig->ret)) {
7413 /* allocate local 3 to store the return value */
7414 mono_mb_add_local (mb, sig->ret);
7415 }
7416
7417 if (mspecs [0] && mspecs [0]->native == MONO_NATIVE_CUSTOM) {
7418 /* Return type custom marshaling */
7419 /*
7420 * Since we can't determine the return type of the unmanaged function,
7421 * we assume it returns a pointer, and pass that pointer to
7422 * MarshalNativeToManaged.
7423 */
7424 csig->ret = &mono_defaults.int_class->byval_arg;
7425 }
7426
7427 /* we first do all conversions */
7428 tmp_locals = alloca (sizeof (int) * sig->param_count);
7429 m.orig_conv_args = alloca (sizeof (int) * (sig->param_count + 1));
7430
7431 for (i = 0; i < sig->param_count; i ++) {
7432 tmp_locals [i] = emit_marshal (&m, i + sig->hasthis, sig->params [i], mspecs [i + 1], 0, &csig->params [i], MARSHAL_ACTION_CONV_IN);
7433 }
7434
7435 /* push all arguments */
7436
7437 if (sig->hasthis)
7438 mono_mb_emit_byte (mb, CEE_LDARG_0);
7439
7440
7441 for (i = 0; i < sig->param_count; i++) {
7442 emit_marshal (&m, i + sig->hasthis, sig->params [i], mspecs [i + 1], tmp_locals [i], NULL, MARSHAL_ACTION_PUSH);
7443 }
7444
7445 /* call the native method */
7446 if (MONO_CLASS_IS_IMPORT (mb->method->klass)) {
7447 mono_mb_emit_cominterop_call (mb, csig, &piinfo->method);
7448 }
7449 else {
7450 mono_mb_emit_native_call (mb, csig, func);
7451 }
7452
7453 /* Set LastError if needed */
7454 if (piinfo->piflags & PINVOKE_ATTRIBUTE_SUPPORTS_LAST_ERROR) {
7455 if (!get_last_error_sig) {
7456 get_last_error_sig = mono_metadata_signature_alloc (mono_defaults.corlib, 0);
7457 get_last_error_sig->ret = &mono_defaults.int_class->byval_arg;
7458 get_last_error_sig->pinvoke = 1;
7459 }
7460
7461 #ifdef PLATFORM_WIN32
7462 /*
7463 * Have to call GetLastError () early and without a wrapper, since various runtime components could
7464 * clobber its value.
7465 */
7466 mono_mb_emit_native_call (mb, get_last_error_sig, GetLastError);
7467 mono_mb_emit_icall (mb, mono_marshal_set_last_error_windows);
7468 #else
7469 mono_mb_emit_icall (mb, mono_marshal_set_last_error);
7470 #endif
7471 }
7472
7473 /* convert the result */
7474 if (!sig->ret->byref) {
7475 MonoMarshalSpec *spec = mspecs [0];
7476 type = sig->ret->type;
7477
7478 if (spec && spec->native == MONO_NATIVE_CUSTOM) {
7479 emit_marshal (&m, 0, sig->ret, spec, 0, NULL, MARSHAL_ACTION_CONV_RESULT);
7480 } else {
7481
7482 handle_enum:
7483 switch (type) {
7484 case MONO_TYPE_VOID:
7485 break;
7486 case MONO_TYPE_VALUETYPE:
7487 klass = sig->ret->data.klass;
7488 if (klass->enumtype) {
7489 type = sig->ret->data.klass->enum_basetype->type;
7490 goto handle_enum;
7491 }
7492 emit_marshal (&m, 0, sig->ret, spec, 0, NULL, MARSHAL_ACTION_CONV_RESULT);
7493 break;
7494 case MONO_TYPE_I1:
7495 case MONO_TYPE_U1:
7496 case MONO_TYPE_I2:
7497 case MONO_TYPE_U2:
7498 case MONO_TYPE_I4:
7499 case MONO_TYPE_U4:
7500 case MONO_TYPE_I:
7501 case MONO_TYPE_U:
7502 case MONO_TYPE_R4:
7503 case MONO_TYPE_R8:
7504 case MONO_TYPE_I8:
7505 case MONO_TYPE_U8:
7506 case MONO_TYPE_FNPTR:
7507 case MONO_TYPE_STRING:
7508 case MONO_TYPE_CLASS:
7509 case MONO_TYPE_OBJECT:
7510 case MONO_TYPE_BOOLEAN:
7511 case MONO_TYPE_ARRAY:
7512 case MONO_TYPE_SZARRAY:
7513 case MONO_TYPE_CHAR:
7514 case MONO_TYPE_PTR:
7515 emit_marshal (&m, 0, sig->ret, spec, 0, NULL, MARSHAL_ACTION_CONV_RESULT);
7516 break;
7517 case MONO_TYPE_TYPEDBYREF:
7518 default:
7519 g_warning ("return type 0x%02x unknown", sig->ret->type);
7520 g_assert_not_reached ();
7521 }
7522 }
7523 } else {
7524 mono_mb_emit_stloc (mb, 3);
7525 }
7526
7527 /*
7528 * Need to call this after converting the result since MONO_VTADDR needs
7529 * to be adjacent to the call instruction.
7530 */
7531 emit_thread_interrupt_checkpoint (mb);
7532
7533 /* we need to convert byref arguments back and free string arrays */
7534 for (i = 0; i < sig->param_count; i++) {
7535 MonoType *t = sig->params [i];
7536 MonoMarshalSpec *spec = mspecs [i + 1];
7537
7538 argnum = i + sig->hasthis;
7539
7540 if (spec && ((spec->native == MONO_NATIVE_CUSTOM) || (spec->native == MONO_NATIVE_ASANY))) {
7541 emit_marshal (&m, argnum, t, spec, tmp_locals [i], NULL, MARSHAL_ACTION_CONV_OUT);
7542 continue;
7543 }
7544
7545 switch (t->type) {
7546 case MONO_TYPE_STRING:
7547 case MONO_TYPE_VALUETYPE:
7548 case MONO_TYPE_CLASS:
7549 case MONO_TYPE_OBJECT:
7550 case MONO_TYPE_SZARRAY:
7551 case MONO_TYPE_BOOLEAN:
7552 emit_marshal (&m, argnum, t, spec, tmp_locals [i], NULL, MARSHAL_ACTION_CONV_OUT);
7553 break;
7554 }
7555 }
7556
7557 if (!MONO_TYPE_IS_VOID(sig->ret))
7558 mono_mb_emit_ldloc (mb, 3);
7559
7560 mono_mb_emit_byte (mb, CEE_RET);
7561 }
7562
7563 /**
7564 * mono_marshal_get_native_wrapper:
7565 * @method: The MonoMethod to wrap.
7566 *
7567 * generates IL code for the pinvoke wrapper (the generated method
7568 * calls the unmanaged code in piinfo->addr)
7569 */
7570 MonoMethod *
7571 mono_marshal_get_native_wrapper (MonoMethod *method)
7572 {
7573 MonoMethodSignature *sig, *csig;
7574 MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *) method;
7575 MonoMethodBuilder *mb;
7576 MonoMarshalSpec **mspecs;
7577 MonoMethod *res;
7578 GHashTable *cache;
7579 gboolean pinvoke = FALSE;
7580 gpointer iter;
7581 int i;
7582 const char *exc_class = "MissingMethodException";
7583 const char *exc_arg = NULL;
7584
7585 g_assert (method != NULL);
7586 g_assert (mono_method_signature (method)->pinvoke);
7587
7588 cache = method->klass->image->native_wrapper_cache;
7589 if ((res = mono_marshal_find_in_cache (cache, method)))
7590 return res;
7591
7592 if (MONO_CLASS_IS_IMPORT (method->klass))
7593 return cominterop_get_native_wrapper (method);
7594
7595 sig = mono_method_signature (method);
7596
7597 if (!(method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) &&
7598 (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL))
7599 pinvoke = TRUE;
7600
7601 if (!piinfo->addr) {
7602 if (pinvoke)
7603 mono_lookup_pinvoke_call (method, &exc_class, &exc_arg);
7604 else
7605 piinfo->addr = mono_lookup_internal_call (method);
7606 }
7607
7608 /* hack - redirect certain string constructors to CreateString */
7609 if (piinfo->addr == ves_icall_System_String_ctor_RedirectToCreateString) {
7610 g_assert (!pinvoke);
7611 g_assert (method->string_ctor);
7612 g_assert (sig->hasthis);
7613
7614 /* CreateString returns a value */
7615 csig = signature_dup (method->klass->image, sig);
7616 csig->ret = &mono_defaults.string_class->byval_arg;
7617 csig->pinvoke = 0;
7618
7619 iter = NULL;
7620 while ((res = mono_class_get_methods (mono_defaults.string_class, &iter))) {
7621 if (!strcmp ("CreateString", res->name) &&
7622 mono_metadata_signature_equal (csig, mono_method_signature (res))) {
7623
7624 g_assert (!(res->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL));
7625 g_assert (!(res->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL));
7626
7627 /* create a wrapper to preserve .ctor in stack trace */
7628 mb = mono_mb_new (method->klass, method->name, MONO_WRAPPER_MANAGED_TO_MANAGED);
7629
7630 mono_mb_emit_byte (mb, CEE_LDARG_0);
7631 for (i = 1; i <= csig->param_count; i++)
7632 mono_mb_emit_ldarg (mb, i);
7633 mono_mb_emit_managed_call (mb, res, NULL);
7634 mono_mb_emit_byte (mb, CEE_RET);
7635
7636 /* use native_wrapper_cache because internal calls are looked up there */
7637 res = mono_mb_create_and_cache (cache, method,
7638 mb, csig, csig->param_count + 1);
7639
7640 mono_mb_free (mb);
7641
7642 return res;
7643 }
7644 }
7645
7646 /* exception will be thrown */
7647 piinfo->addr = NULL;
7648 g_warning ("cannot find CreateString for .ctor");
7649 }
7650
7651 mb = mono_mb_new (method->klass, method->name, MONO_WRAPPER_MANAGED_TO_NATIVE);
7652
7653 mb->method->save_lmf = 1;
7654
7655 if (!piinfo->addr) {
7656 mono_mb_emit_exception (mb, exc_class, exc_arg);
7657 csig = signature_dup (method->klass->image, sig);
7658 csig->pinvoke = 0;
7659 res = mono_mb_create_and_cache (cache, method,
7660 mb, csig, csig->param_count + 16);
7661 mono_mb_free (mb);
7662 return res;
7663 }
7664
7665 /* internal calls: we simply push all arguments and call the method (no conversions) */
7666 if (method->iflags & (METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL | METHOD_IMPL_ATTRIBUTE_RUNTIME)) {
7667
7668 /* hack - string constructors returns a value */
7669 if (method->string_ctor) {
7670 csig = signature_dup (method->klass->image, sig);
7671 csig->ret = &mono_defaults.string_class->byval_arg;
7672 } else
7673 csig = sig;
7674
7675 if (sig->hasthis)
7676 mono_mb_emit_byte (mb, CEE_LDARG_0);
7677
7678 for (i = 0; i < sig->param_count; i++)
7679 mono_mb_emit_ldarg (mb, i + sig->hasthis);
7680
7681 g_assert (piinfo->addr);
7682 mono_mb_emit_native_call (mb, csig, piinfo->addr);
7683 emit_thread_interrupt_checkpoint (mb);
7684 mono_mb_emit_byte (mb, CEE_RET);
7685
7686 csig = signature_dup (method->klass->image, csig);
7687 csig->pinvoke = 0;
7688 res = mono_mb_create_and_cache (cache, method,
7689 mb, csig, csig->param_count + 16);
7690 mono_mb_free (mb);
7691 return res;
7692 }
7693
7694 g_assert (pinvoke);
7695
7696 mspecs = g_new (MonoMarshalSpec*, sig->param_count + 1);
7697 mono_method_get_marshal_info (method, mspecs);
7698
7699 mono_marshal_emit_native_wrapper (mb->method->klass->image, mb, sig, piinfo, mspecs, piinfo->addr);
7700
7701 csig = signature_dup (method->klass->image, sig);
7702 csig->pinvoke = 0;
7703 res = mono_mb_create_and_cache (cache, method,
7704 mb, csig, csig->param_count + 16);
7705 mono_mb_free (mb);
7706
7707 for (i = sig->param_count; i >= 0; i--)
7708 if (mspecs [i])
7709 mono_metadata_free_marshal_spec (mspecs [i]);
7710 g_free (mspecs);
7711
7712 /* printf ("CODE FOR %s: \n%s.\n", mono_method_full_name (res, TRUE), mono_disasm_code (0, res, ((MonoMethodNormal*)res)->header->code, ((MonoMethodNormal*)res)->header->code + ((MonoMethodNormal*)res)->header->code_size)); */
7713
7714 return res;
7715 }
7716
7717 /**
7718 * mono_marshal_get_native_func_wrapper:
7719 * @image: The image to use for memory allocation and for looking up custom marshallers.
7720 * @sig: The signature of the function
7721 * @func: The native function to wrap
7722 *
7723 * Returns a wrapper method around native functions, similar to the pinvoke
7724 * wrapper.
7725 */
7726 MonoMethod *
7727 mono_marshal_get_native_func_wrapper (MonoImage *image, MonoMethodSignature *sig,
7728 MonoMethodPInvoke *piinfo, MonoMarshalSpec **mspecs, gpointer func)
7729 {
7730 MonoMethodSignature *csig;
7731
7732 MonoMethodBuilder *mb;
7733 MonoMethod *res;
7734 GHashTable *cache;
7735 char *name;
7736
7737 cache = image->native_wrapper_cache;
7738 if ((res = mono_marshal_find_in_cache (cache, func)))
7739 return res;
7740
7741 name = g_strdup_printf ("wrapper_native_%p", func);
7742 mb = mono_mb_new (mono_defaults.object_class, name, MONO_WRAPPER_MANAGED_TO_NATIVE);
7743 mb->method->save_lmf = 1;
7744
7745 mono_marshal_emit_native_wrapper (image, mb, sig, piinfo, mspecs, func);
7746
7747 csig = signature_dup (image, sig);
7748 csig->pinvoke = 0;
7749 res = mono_mb_create_and_cache (cache, func,
7750 mb, csig, csig->param_count + 16);
7751 mono_mb_free (mb);
7752
7753 /* printf ("CODE FOR %s: \n%s.\n", mono_method_full_name (res, TRUE), mono_disasm_code (0, res, ((MonoMethodNormal*)res)->header->code, ((MonoMethodNormal*)res)->header->code + ((MonoMethodNormal*)res)->header->code_size)); */
7754
7755 return res;
7756 }
7757
7758 /* FIXME: moving GC */
7759 static void
7760 mono_marshal_emit_managed_wrapper (MonoMethodBuilder *mb, MonoMethodSignature *invoke_sig, MonoMarshalSpec **mspecs, EmitMarshalContext* m, MonoMethod *method, MonoObject* this)
7761 {
7762 MonoMethodSignature *sig, *csig;
7763 int i, *tmp_locals;
7764
7765 sig = m->sig;
7766 csig = m->csig;
7767
7768 /* allocate local 0 (pointer) src_ptr */
7769 mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
7770 /* allocate local 1 (pointer) dst_ptr */
7771 mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
7772 /* allocate local 2 (boolean) delete_old */
7773 mono_mb_add_local (mb, &mono_defaults.boolean_class->byval_arg);
7774
7775 if (!MONO_TYPE_IS_VOID(sig->ret)) {
7776 /* allocate local 3 to store the return value */
7777 mono_mb_add_local (mb, sig->ret);
7778 }
7779
7780 mono_mb_emit_icon (mb, 0);
7781 mono_mb_emit_stloc (mb, 2);
7782
7783 /* fixme: howto handle this ? */
7784 if (sig->hasthis) {
7785 if (this) {
7786 /* FIXME: need a solution for the moving GC here */
7787 mono_mb_emit_ptr (mb, this);
7788 } else {
7789 /* fixme: */
7790 g_assert_not_reached ();
7791 }
7792 }
7793
7794 /* we first do all conversions */
7795 tmp_locals = alloca (sizeof (int) * sig->param_count);
7796 for (i = 0; i < sig->param_count; i ++) {
7797 MonoType *t = sig->params [i];
7798
7799 switch (t->type) {
7800 case MONO_TYPE_OBJECT:
7801 case MONO_TYPE_CLASS:
7802 case MONO_TYPE_VALUETYPE:
7803 case MONO_TYPE_ARRAY:
7804 case MONO_TYPE_SZARRAY:
7805 case MONO_TYPE_STRING:
7806 tmp_locals [i] = emit_marshal (m, i, sig->params [i], mspecs [i + 1], 0, &csig->params [i], MARSHAL_ACTION_MANAGED_CONV_IN);
7807
7808 break;
7809 default:
7810 tmp_locals [i] = 0;
7811 break;
7812 }
7813 }
7814
7815 emit_thread_interrupt_checkpoint (mb);
7816
7817 for (i = 0; i < sig->param_count; i++) {
7818 MonoType *t = sig->params [i];
7819
7820 if (tmp_locals [i]) {
7821 if (t->byref)
7822 mono_mb_emit_ldloc_addr (mb, tmp_locals [i]);
7823 else
7824 mono_mb_emit_ldloc (mb, tmp_locals [i]);
7825 }
7826 else
7827 mono_mb_emit_ldarg (mb, i);
7828 }
7829
7830 mono_mb_emit_managed_call (mb, method, NULL);
7831
7832 if (mspecs [0] && mspecs [0]->native == MONO_NATIVE_CUSTOM) {
7833 emit_marshal (m, 0, sig->ret, mspecs [0], 0, NULL, MARSHAL_ACTION_MANAGED_CONV_RESULT);
7834 }
7835 else
7836 if (!sig->ret->byref) {
7837 switch (sig->ret->type) {
7838 case MONO_TYPE_VOID:
7839 break;
7840 case MONO_TYPE_BOOLEAN:
7841 case MONO_TYPE_I1:
7842 case MONO_TYPE_U1:
7843 case MONO_TYPE_I2:
7844 case MONO_TYPE_U2:
7845 case MONO_TYPE_I4:
7846 case MONO_TYPE_U4:
7847 case MONO_TYPE_I:
7848 case MONO_TYPE_U:
7849 case MONO_TYPE_PTR:
7850 case MONO_TYPE_R4:
7851 case MONO_TYPE_R8:
7852 case MONO_TYPE_I8:
7853 case MONO_TYPE_U8:
7854 case MONO_TYPE_OBJECT:
7855 mono_mb_emit_stloc (mb, 3);
7856 break;
7857 case MONO_TYPE_STRING:
7858 csig->ret = &mono_defaults.int_class->byval_arg;
7859 emit_marshal (m, 0, sig->ret, mspecs [0], 0, NULL, MARSHAL_ACTION_MANAGED_CONV_RESULT);
7860 break;
7861 case MONO_TYPE_VALUETYPE:
7862 case MONO_TYPE_CLASS:
7863 case MONO_TYPE_SZARRAY:
7864 emit_marshal (m, 0, sig->ret, mspecs [0], 0, NULL, MARSHAL_ACTION_MANAGED_CONV_RESULT);
7865 break;
7866 default:
7867 g_warning ("return type 0x%02x unknown", sig->ret->type);
7868 g_assert_not_reached ();
7869 }
7870 } else {
7871 mono_mb_emit_stloc (mb, 3);
7872 }
7873
7874 /* Convert byref arguments back */
7875 for (i = 0; i < sig->param_count; i ++) {
7876 MonoType *t = sig->params [i];
7877 MonoMarshalSpec *spec = mspecs [i + 1];
7878
7879 if (spec && spec->native == MONO_NATIVE_CUSTOM) {
7880 emit_marshal (m, i, t, mspecs [i + 1], tmp_locals [i], NULL, MARSHAL_ACTION_MANAGED_CONV_OUT);
7881 }
7882 else if (t->byref) {
7883 switch (t->type) {
7884 case MONO_TYPE_CLASS:
7885 case MONO_TYPE_VALUETYPE:
7886 emit_marshal (m, i, t, mspecs [i + 1], tmp_locals [i], NULL, MARSHAL_ACTION_MANAGED_CONV_OUT);
7887 break;
7888 }
7889 }
7890 else if (invoke_sig->params [i]->attrs & PARAM_ATTRIBUTE_OUT) {
7891 /* The [Out] information is encoded in the delegate signature */
7892 switch (t->type) {
7893 case MONO_TYPE_SZARRAY:
7894 case MONO_TYPE_CLASS:
7895 case MONO_TYPE_VALUETYPE:
7896 emit_marshal (m, i, invoke_sig->params [i], mspecs [i + 1], tmp_locals [i], NULL, MARSHAL_ACTION_MANAGED_CONV_OUT);
7897 break;
7898 default:
7899 g_assert_not_reached ();
7900 }
7901 }
7902 }
7903
7904 if (m->retobj_var) {
7905 mono_mb_emit_ldloc (mb, m->retobj_var);
7906 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
7907 mono_mb_emit_op (mb, CEE_MONO_RETOBJ, m->retobj_class);
7908 }
7909 else {
7910 if (!MONO_TYPE_IS_VOID(sig->ret))
7911 mono_mb_emit_ldloc (mb, 3);
7912 mono_mb_emit_byte (mb, CEE_RET);
7913 }
7914 }
7915
7916
7917 /*
7918 * generates IL code to call managed methods from unmanaged code
7919 */
7920 MonoMethod *
7921 mono_marshal_get_managed_wrapper (MonoMethod *method, MonoClass *delegate_klass, MonoObject *this)
7922 {
7923 static MonoClass *UnmanagedFunctionPointerAttribute;
7924 MonoMethodSignature *sig, *csig, *invoke_sig;
7925 MonoMethodBuilder *mb;
7926 MonoMethod *res, *invoke;
7927 MonoMarshalSpec **mspecs;
7928 MonoMethodPInvoke piinfo;
7929 GHashTable *cache;
7930 int i;
7931 EmitMarshalContext m;
7932
7933 g_assert (method != NULL);
7934 g_assert (!mono_method_signature (method)->pinvoke);
7935
7936 /*
7937 * FIXME: Should cache the method+delegate type pair, since the same method
7938 * could be called with different delegates, thus different marshalling
7939 * options.
7940 */
7941 cache = method->klass->image->managed_wrapper_cache;
7942 if (!this && (res = mono_marshal_find_in_cache (cache, method)))
7943 return res;
7944
7945 invoke = mono_class_get_method_from_name (delegate_klass, "Invoke", mono_method_signature (method)->param_count);
7946 invoke_sig = mono_method_signature (invoke);
7947
7948 mspecs = g_new0 (MonoMarshalSpec*, mono_method_signature (invoke)->param_count + 1);
7949 mono_method_get_marshal_info (invoke, mspecs);
7950
7951 sig = mono_method_signature (method);
7952
7953 mb = mono_mb_new (method->klass, method->name, MONO_WRAPPER_NATIVE_TO_MANAGED);
7954
7955
7956 /* we copy the signature, so that we can modify it */
7957 csig = signature_dup (method->klass->image, sig);
7958 csig->hasthis = 0;
7959 csig->pinvoke = 1;
7960
7961 m.mb = mb;
7962 m.sig = sig;
7963 m.piinfo = NULL;
7964 m.retobj_var = 0;
7965 m.csig = csig;
7966 m.image = method->klass->image;
7967
7968 #ifdef PLATFORM_WIN32
7969 /*
7970 * Under windows, delegates passed to native code must use the STDCALL
7971 * calling convention.
7972 */
7973 csig->call_convention = MONO_CALL_STDCALL;
7974 #endif
7975
7976 /* Change default calling convention if needed */
7977 /* Why is this a modopt ? */
7978 if (invoke_sig->ret && invoke_sig->ret->num_mods) {
7979 for (i = 0; i < invoke_sig->ret->num_mods; ++i) {
7980 MonoClass *cmod_class = mono_class_get (delegate_klass->image, invoke_sig->ret->modifiers [i].token);
7981 g_assert (cmod_class);
7982 if ((cmod_class->image == mono_defaults.corlib) && !strcmp (cmod_class->name_space, "System.Runtime.CompilerServices")) {
7983 if (!strcmp (cmod_class->name, "CallConvCdecl"))
7984 csig->call_convention = MONO_CALL_C;
7985 else if (!strcmp (cmod_class->name, "CallConvStdcall"))
7986 csig->call_convention = MONO_CALL_STDCALL;
7987 else if (!strcmp (cmod_class->name, "CallConvFastcall"))
7988 csig->call_convention = MONO_CALL_FASTCALL;
7989 else if (!strcmp (cmod_class->name, "CallConvThiscall"))
7990 csig->call_convention = MONO_CALL_THISCALL;
7991 }
7992 }
7993 }
7994
7995 /* Handle the UnmanagedFunctionPointerAttribute */
7996 if (!UnmanagedFunctionPointerAttribute)
7997 UnmanagedFunctionPointerAttribute = mono_class_from_name (mono_defaults.corlib, "System.Runtime.InteropServices", "UnmanagedFunctionPointerAttribute");
7998
7999 /* The attribute is only available in Net 2.0 */
8000 if (UnmanagedFunctionPointerAttribute) {
8001 MonoReflectionUnmanagedFunctionPointerAttribute *attr;
8002 MonoCustomAttrInfo *cinfo;
8003
8004 /*
8005 * The pinvoke attributes are stored in a real custom attribute so we have to
8006 * construct it.
8007 */
8008 cinfo = mono_custom_attrs_from_class (delegate_klass);
8009 if (cinfo) {
8010 attr = (MonoReflectionUnmanagedFunctionPointerAttribute*)mono_custom_attrs_get_attr (cinfo, UnmanagedFunctionPointerAttribute);
8011 if (attr) {
8012 memset (&piinfo, 0, sizeof (piinfo));
8013 m.piinfo = &piinfo;
8014 piinfo.piflags = (attr->call_conv << 8) | (attr->charset ? (attr->charset - 1) * 2 : 1) | attr->set_last_error;
8015
8016 csig->call_convention = attr->call_conv - 1;
8017 }
8018 if (!cinfo->cached)
8019 mono_custom_attrs_free (cinfo);
8020 }
8021 }
8022
8023 mono_marshal_emit_managed_wrapper (mb, invoke_sig, mspecs, &m, method, this);
8024
8025 if (!this)
8026 res = mono_mb_create_and_cache (cache, method,
8027 mb, csig, sig->param_count + 16);
8028 else {
8029 mb->dynamic = 1;
8030 res = mono_mb_create_method (mb, csig, sig->param_count + 16);
8031 }
8032 mono_mb_free (mb);
8033
8034 for (i = mono_method_signature (invoke)->param_count; i >= 0; i--)
8035 if (mspecs [i])
8036 mono_metadata_free_marshal_spec (mspecs [i]);
8037 g_free (mspecs);
8038
8039 /* printf ("CODE FOR %s: \n%s.\n", mono_method_full_name (res, TRUE), mono_disasm_code (0, res, ((MonoMethodNormal*)res)->header->code, ((MonoMethodNormal*)res)->header->code + ((MonoMethodNormal*)res)->header->code_size)); */
8040
8041 return res;
8042 }
8043
8044 static MonoReflectionType *
8045 type_from_handle (MonoType *handle)
8046 {
8047 MonoDomain *domain = mono_domain_get ();
8048 MonoClass *klass = mono_class_from_mono_type (handle);
8049
8050 MONO_ARCH_SAVE_REGS;
8051
8052 mono_class_init (klass);
8053 return mono_type_get_object (domain, handle);
8054 }
8055
8056 /*
8057 * mono_marshal_get_isinst:
8058 * @klass: the type of the field
8059 *
8060 * This method generates a function which can be used to check if an object is
8061 * an instance of the given type, icluding the case where the object is a proxy.
8062 * The generated function has the following signature:
8063 * MonoObject* __isinst_wrapper_ (MonoObject *obj)
8064 */
8065 MonoMethod *
8066 mono_marshal_get_isinst (MonoClass *klass)
8067 {
8068 static MonoMethodSignature *isint_sig = NULL;
8069 GHashTable *cache;
8070 MonoMethod *res;
8071 int pos_was_ok, pos_failed, pos_end, pos_end2;
8072 char *name;
8073 MonoMethodBuilder *mb;
8074
8075 cache = klass->image->isinst_cache;
8076 if ((res = mono_marshal_find_in_cache (cache, klass)))
8077 return res;
8078
8079 if (!isint_sig) {
8080 isint_sig = mono_metadata_signature_alloc (mono_defaults.corlib, 1);
8081 isint_sig->params [0] = &mono_defaults.object_class->byval_arg;
8082 isint_sig->ret = &mono_defaults.object_class->byval_arg;
8083 isint_sig->pinvoke = 0;
8084 }
8085
8086 name = g_strdup_printf ("__isinst_wrapper_%s", klass->name);
8087 mb = mono_mb_new (mono_defaults.object_class, name, MONO_WRAPPER_ISINST);
8088 g_free (name);
8089
8090 mb->method->save_lmf = 1;
8091
8092 /* check if the object is a proxy that needs special cast */
8093 mono_mb_emit_ldarg (mb, 0);
8094 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
8095 mono_mb_emit_op (mb, CEE_MONO_CISINST, klass);
8096
8097 /* The result of MONO_ISINST can be:
8098 0) the type check succeeded
8099 1) the type check did not succeed
8100 2) a CanCastTo call is needed */
8101
8102 mono_mb_emit_byte (mb, CEE_DUP);
8103 pos_was_ok = mono_mb_emit_branch (mb, CEE_BRFALSE);
8104
8105 mono_mb_emit_byte (mb, CEE_LDC_I4_2);
8106 pos_failed = mono_mb_emit_branch (mb, CEE_BNE_UN);
8107
8108 /* get the real proxy from the transparent proxy*/
8109
8110 mono_mb_emit_ldarg (mb, 0);
8111 mono_mb_emit_managed_call (mb, mono_marshal_get_proxy_cancast (klass), NULL);
8112 pos_end = mono_mb_emit_branch (mb, CEE_BR);
8113
8114 /* fail */
8115
8116 mono_mb_patch_addr (mb, pos_failed, mb->pos - (pos_failed + 4));
8117 mono_mb_emit_byte (mb, CEE_LDNULL);
8118 pos_end2 = mono_mb_emit_branch (mb, CEE_BR);
8119
8120 /* success */
8121
8122 mono_mb_patch_addr (mb, pos_was_ok, mb->pos - (pos_was_ok + 4));
8123 mono_mb_emit_byte (mb, CEE_POP);
8124 mono_mb_emit_ldarg (mb, 0);
8125
8126 /* the end */
8127
8128 mono_mb_patch_addr (mb, pos_end, mb->pos - (pos_end + 4));
8129 mono_mb_patch_addr (mb, pos_end2, mb->pos - (pos_end2 + 4));
8130 mono_mb_emit_byte (mb, CEE_RET);
8131
8132 res = mono_mb_create_and_cache (cache, klass, mb, isint_sig, isint_sig->param_count + 16);
8133 mono_mb_free (mb);
8134
8135 return res;
8136 }
8137
8138 /*
8139 * mono_marshal_get_castclass:
8140 * @klass: the type of the field
8141 *
8142 * This method generates a function which can be used to cast an object to
8143 * an instance of the given type, icluding the case where the object is a proxy.
8144 * The generated function has the following signature:
8145 * MonoObject* __castclass_wrapper_ (MonoObject *obj)
8146 */
8147 MonoMethod *
8148 mono_marshal_get_castclass (MonoClass *klass)
8149 {
8150 static MonoMethodSignature *castclass_sig = NULL;
8151 GHashTable *cache;
8152 MonoMethod *res;
8153 int pos_was_ok, pos_was_ok2;
8154 char *name;
8155 MonoMethodBuilder *mb;
8156
8157 cache = klass->image->castclass_cache;
8158 if ((res = mono_marshal_find_in_cache (cache, klass)))
8159 return res;
8160
8161 if (!castclass_sig) {
8162 castclass_sig = mono_metadata_signature_alloc (mono_defaults.corlib, 1);
8163 castclass_sig->params [0] = &mono_defaults.object_class->byval_arg;
8164 castclass_sig->ret = &mono_defaults.object_class->byval_arg;
8165 castclass_sig->pinvoke = 0;
8166 }
8167
8168 name = g_strdup_printf ("__castclass_wrapper_%s", klass->name);
8169 mb = mono_mb_new (mono_defaults.object_class, name, MONO_WRAPPER_CASTCLASS);
8170 g_free (name);
8171
8172 mb->method->save_lmf = 1;
8173
8174 /* check if the object is a proxy that needs special cast */
8175 mono_mb_emit_ldarg (mb, 0);
8176 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
8177 mono_mb_emit_op (mb, CEE_MONO_CCASTCLASS, klass);
8178
8179 /* The result of MONO_ISINST can be:
8180 0) the cast is valid
8181 1) cast of unknown proxy type
8182 or an exception if the cast is is invalid
8183 */
8184
8185 pos_was_ok = mono_mb_emit_branch (mb, CEE_BRFALSE);
8186
8187 /* get the real proxy from the transparent proxy*/
8188
8189 mono_mb_emit_ldarg (mb, 0);
8190 mono_mb_emit_managed_call (mb, mono_marshal_get_proxy_cancast (klass), NULL);
8191 pos_was_ok2 = mono_mb_emit_branch (mb, CEE_BRTRUE);
8192
8193 /* fail */
8194 mono_mb_emit_exception (mb, "InvalidCastException", NULL);
8195
8196 /* success */
8197 mono_mb_patch_addr (mb, pos_was_ok, mb->pos - (pos_was_ok + 4));
8198 mono_mb_patch_addr (mb, pos_was_ok2, mb->pos - (pos_was_ok2 + 4));
8199 mono_mb_emit_ldarg (mb, 0);
8200
8201 /* the end */
8202 mono_mb_emit_byte (mb, CEE_RET);
8203
8204 res = mono_mb_create_and_cache (cache, klass, mb, castclass_sig, castclass_sig->param_count + 16);
8205 mono_mb_free (mb);
8206
8207 return res;
8208 }
8209
8210 MonoMethod *
8211 mono_marshal_get_proxy_cancast (MonoClass *klass)
8212 {
8213 static MonoMethodSignature *isint_sig = NULL;
8214 GHashTable *cache;
8215 MonoMethod *res;
8216 int pos_failed, pos_end;
8217 char *name;
8218 MonoMethod *can_cast_to;
8219 MonoMethodDesc *desc;
8220 MonoMethodBuilder *mb;
8221
8222 cache = klass->image->proxy_isinst_cache;
8223 if ((res = mono_marshal_find_in_cache (cache, klass)))
8224 return res;
8225
8226 if (!isint_sig) {
8227 isint_sig = mono_metadata_signature_alloc (mono_defaults.corlib, 1);
8228 isint_sig->params [0] = &mono_defaults.object_class->byval_arg;
8229 isint_sig->ret = &mono_defaults.object_class->byval_arg;
8230 isint_sig->pinvoke = 0;
8231 }
8232
8233 name = g_strdup_printf ("__proxy_isinst_wrapper_%s", klass->name);
8234 mb = mono_mb_new (mono_defaults.object_class, name, MONO_WRAPPER_PROXY_ISINST);
8235 g_free (name);
8236
8237 mb->method->save_lmf = 1;
8238
8239 /* get the real proxy from the transparent proxy*/
8240 mono_mb_emit_ldarg (mb, 0);
8241 mono_mb_emit_ldflda (mb, G_STRUCT_OFFSET (MonoTransparentProxy, rp));
8242 mono_mb_emit_byte (mb, CEE_LDIND_REF);
8243
8244 /* get the reflection type from the type handle */
8245 mono_mb_emit_ptr (mb, &klass->byval_arg);
8246 mono_mb_emit_icall (mb, type_from_handle);
8247
8248 mono_mb_emit_ldarg (mb, 0);
8249
8250 /* make the call to CanCastTo (type, ob) */
8251 desc = mono_method_desc_new ("IRemotingTypeInfo:CanCastTo", FALSE);
8252 can_cast_to = mono_method_desc_search_in_class (desc, mono_defaults.iremotingtypeinfo_class);
8253 g_assert (can_cast_to);
8254 mono_method_desc_free (desc);
8255 mono_mb_emit_op (mb, CEE_CALLVIRT, can_cast_to);
8256
8257 pos_failed = mono_mb_emit_branch (mb, CEE_BRFALSE);
8258
8259 /* Upgrade the proxy vtable by calling: mono_upgrade_remote_class_wrapper (type, ob)*/
8260 mono_mb_emit_ptr (mb, &klass->byval_arg);
8261 mono_mb_emit_icall (mb, type_from_handle);
8262 mono_mb_emit_ldarg (mb, 0);
8263
8264 mono_mb_emit_icall (mb, mono_upgrade_remote_class_wrapper);
8265 emit_thread_interrupt_checkpoint (mb);
8266
8267 mono_mb_emit_ldarg (mb, 0);
8268 pos_end = mono_mb_emit_branch (mb, CEE_BR);
8269
8270 /* fail */
8271
8272 mono_mb_patch_addr (mb, pos_failed, mb->pos - (pos_failed + 4));
8273 mono_mb_emit_byte (mb, CEE_LDNULL);
8274
8275 /* the end */
8276
8277 mono_mb_patch_addr (mb, pos_end, mb->pos - (pos_end + 4));
8278 mono_mb_emit_byte (mb, CEE_RET);
8279
8280 res = mono_mb_create_and_cache (cache, klass, mb, isint_sig, isint_sig->param_count + 16);
8281 mono_mb_free (mb);
8282
8283 return res;
8284 }
8285
8286 void
8287 mono_upgrade_remote_class_wrapper (MonoReflectionType *rtype, MonoTransparentProxy *tproxy)
8288 {
8289 MonoClass *klass;
8290 MonoDomain *domain = ((MonoObject*)tproxy)->vtable->domain;
8291 klass = mono_class_from_mono_type (rtype->type);
8292 mono_upgrade_remote_class (domain, (MonoObject*)tproxy, klass);
8293 }
8294
8295 /**
8296 * mono_marshal_get_struct_to_ptr:
8297 * @klass:
8298 *
8299 * generates IL code for StructureToPtr (object structure, IntPtr ptr, bool fDeleteOld)
8300 */
8301 MonoMethod *
8302 mono_marshal_get_struct_to_ptr (MonoClass *klass)
8303 {
8304 MonoMethodBuilder *mb;
8305 static MonoMethod *stoptr = NULL;
8306 MonoMethod *res;
8307
8308 g_assert (klass != NULL);
8309
8310 mono_marshal_load_type_info (klass);
8311
8312 if (klass->marshal_info->str_to_ptr)
8313 return klass->marshal_info->str_to_ptr;
8314
8315 if (!stoptr)
8316 stoptr = mono_class_get_method_from_name (mono_defaults.marshal_class, "StructureToPtr", 3);
8317 g_assert (stoptr);
8318
8319 mb = mono_mb_new (klass, stoptr->name, MONO_WRAPPER_UNKNOWN);
8320
8321 if (klass->blittable) {
8322 mono_mb_emit_byte (mb, CEE_LDARG_1);
8323 mono_mb_emit_byte (mb, CEE_LDARG_0);
8324 mono_mb_emit_ldflda (mb, sizeof (MonoObject));
8325 mono_mb_emit_icon (mb, mono_class_value_size (klass, NULL));
8326 mono_mb_emit_byte (mb, CEE_PREFIX1);
8327 mono_mb_emit_byte (mb, CEE_CPBLK);
8328 } else {
8329
8330 /* allocate local 0 (pointer) src_ptr */
8331 mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
8332 /* allocate local 1 (pointer) dst_ptr */
8333 mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
8334 /* allocate local 2 (boolean) delete_old */
8335 mono_mb_add_local (mb, &mono_defaults.boolean_class->byval_arg);
8336 mono_mb_emit_byte (mb, CEE_LDARG_2);
8337 mono_mb_emit_stloc (mb, 2);
8338
8339 /* initialize src_ptr to point to the start of object data */
8340 mono_mb_emit_byte (mb, CEE_LDARG_0);
8341 mono_mb_emit_ldflda (mb, sizeof (MonoObject));
8342 mono_mb_emit_stloc (mb, 0);
8343
8344 /* initialize dst_ptr */
8345 mono_mb_emit_byte (mb, CEE_LDARG_1);
8346 mono_mb_emit_stloc (mb, 1);
8347
8348 emit_struct_conv (mb, klass, FALSE);
8349 }
8350
8351 mono_mb_emit_byte (mb, CEE_RET);
8352
8353 res = mono_mb_create_method (mb, mono_method_signature (stoptr), 0);
8354 mono_mb_free (mb);
8355
8356 klass->marshal_info->str_to_ptr = res;
8357 return res;
8358 }
8359
8360 /**
8361 * mono_marshal_get_ptr_to_struct:
8362 * @klass:
8363 *
8364 * generates IL code for PtrToStructure (IntPtr src, object structure)
8365 */
8366 MonoMethod *
8367 mono_marshal_get_ptr_to_struct (MonoClass *klass)
8368 {
8369 MonoMethodBuilder *mb;
8370 static MonoMethodSignature *ptostr = NULL;
8371 MonoMethod *res;
8372
8373 g_assert (klass != NULL);
8374
8375 mono_marshal_load_type_info (klass);
8376
8377 if (klass->marshal_info->ptr_to_str)
8378 return klass->marshal_info->ptr_to_str;
8379
8380 if (!ptostr)
8381 /* Create the signature corresponding to
8382 static void PtrToStructure (IntPtr ptr, object structure);
8383 defined in class/corlib/System.Runtime.InteropServices/Marshal.cs */
8384 ptostr = mono_create_icall_signature ("void ptr object");
8385
8386 mb = mono_mb_new (klass, "PtrToStructure", MONO_WRAPPER_UNKNOWN);
8387
8388 if (klass->blittable) {
8389 mono_mb_emit_byte (mb, CEE_LDARG_1);
8390 mono_mb_emit_ldflda (mb, sizeof (MonoObject));
8391 mono_mb_emit_byte (mb, CEE_LDARG_0);
8392 mono_mb_emit_icon (mb, mono_class_value_size (klass, NULL));
8393 mono_mb_emit_byte (mb, CEE_PREFIX1);
8394 mono_mb_emit_byte (mb, CEE_CPBLK);
8395 } else {
8396
8397 /* allocate local 0 (pointer) src_ptr */
8398 mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
8399 /* allocate local 1 (pointer) dst_ptr */
8400 mono_mb_add_local (mb, &klass->this_arg);
8401
8402 /* initialize src_ptr to point to the start of object data */
8403 mono_mb_emit_byte (mb, CEE_LDARG_0);
8404 mono_mb_emit_stloc (mb, 0);
8405
8406 /* initialize dst_ptr */
8407 mono_mb_emit_byte (mb, CEE_LDARG_1);
8408 mono_mb_emit_op (mb, CEE_UNBOX, klass);
8409 mono_mb_emit_stloc (mb, 1);
8410
8411 emit_struct_conv (mb, klass, TRUE);
8412 }
8413
8414 mono_mb_emit_byte (mb, CEE_RET);
8415
8416 res = mono_mb_create_method (mb, ptostr, 0);
8417 mono_mb_free (mb);
8418
8419 klass->marshal_info->ptr_to_str = res;
8420 return res;
8421 }
8422
8423 /*
8424 * generates IL code for the synchronized wrapper: the generated method
8425 * calls METHOD while locking 'this' or the parent type.
8426 */
8427 MonoMethod *
8428 mono_marshal_get_synchronized_wrapper (MonoMethod *method)
8429 {
8430 static MonoMethod *enter_method, *exit_method;
8431 MonoMethodSignature *sig;
8432 MonoExceptionClause *clause;
8433 MonoMethodHeader *header;
8434 MonoMethodBuilder *mb;
8435 MonoMethod *res;
8436 GHashTable *cache;
8437 int i, pos, this_local, ret_local = 0;
8438
8439 g_assert (method);
8440
8441 if (method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED)
8442 return method;
8443
8444 cache = method->klass->image->synchronized_cache;
8445 if ((res = mono_marshal_find_in_cache (cache, method)))
8446 return res;
8447
8448 sig = signature_dup (method->klass->image, mono_method_signature (method));
8449 sig->pinvoke = 0;
8450
8451 mb = mono_mb_new (method->klass, method->name, MONO_WRAPPER_SYNCHRONIZED);
8452
8453 /* result */
8454 if (!MONO_TYPE_IS_VOID (sig->ret))
8455 ret_local = mono_mb_add_local (mb, sig->ret);
8456
8457 /* this */
8458 this_local = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
8459
8460 mono_loader_lock ();
8461 clause = mono_mempool_alloc0 (method->klass->image->mempool, sizeof (MonoExceptionClause));
8462 mono_loader_unlock ();
8463 clause->flags = MONO_EXCEPTION_CLAUSE_FINALLY;
8464
8465 if (!enter_method) {
8466 MonoMethodDesc *desc;
8467
8468 desc = mono_method_desc_new ("Monitor:Enter", FALSE);
8469 enter_method = mono_method_desc_search_in_class (desc, mono_defaults.monitor_class);
8470 g_assert (enter_method);
8471 mono_method_desc_free (desc);
8472 desc = mono_method_desc_new ("Monitor:Exit", FALSE);
8473 exit_method = mono_method_desc_search_in_class (desc, mono_defaults.monitor_class);
8474 g_assert (exit_method);
8475 mono_method_desc_free (desc);
8476 }
8477
8478 /* Push this or the type object */
8479 if (method->flags & METHOD_ATTRIBUTE_STATIC) {
8480 /*
8481 * GetTypeFromHandle isn't called as a managed method because it has
8482 * a funky calling sequence, e.g. ldtoken+GetTypeFromHandle gets
8483 * transformed into something else by the JIT.
8484 */
8485 mono_mb_emit_ptr (mb, &method->klass->byval_arg);
8486 mono_mb_emit_icall (mb, type_from_handle);
8487 }
8488 else
8489 mono_mb_emit_ldarg (mb, 0);
8490 mono_mb_emit_stloc (mb, this_local);
8491
8492 /* Call Monitor::Enter() */
8493 mono_mb_emit_ldloc (mb, this_local);
8494 mono_mb_emit_managed_call (mb, enter_method, NULL);
8495
8496 clause->try_offset = mb->pos;
8497
8498 /* Call the method */
8499 if (sig->hasthis)
8500 mono_mb_emit_ldarg (mb, 0);
8501 for (i = 0; i < sig->param_count; i++)
8502 mono_mb_emit_ldarg (mb, i + (sig->hasthis == TRUE));
8503
8504 /* this is needed to avoid recursion */
8505 mono_mb_emit_byte (mb, CEE_PREFIX1);
8506 mono_mb_emit_op (mb, CEE_LDFTN, method);
8507 mono_mb_emit_calli (mb, mono_method_signature (method));
8508
8509 if (!MONO_TYPE_IS_VOID (sig->ret))
8510 mono_mb_emit_stloc (mb, ret_local);
8511
8512 pos = mono_mb_emit_branch (mb, CEE_LEAVE);
8513
8514 clause->try_len = mb->pos - clause->try_offset;
8515 clause->handler_offset = mb->pos;
8516
8517 /* Call Monitor::Exit() */
8518 mono_mb_emit_ldloc (mb, this_local);
8519 /* mono_mb_emit_native_call (mb, exit_sig, mono_monitor_exit); */
8520 mono_mb_emit_managed_call (mb, exit_method, NULL);
8521 mono_mb_emit_byte (mb, CEE_ENDFINALLY);
8522
8523 clause->handler_len = mb->pos - clause->handler_offset;
8524
8525 mono_mb_patch_branch (mb, pos);
8526 if (!MONO_TYPE_IS_VOID (sig->ret))
8527 mono_mb_emit_ldloc (mb, ret_local);
8528 mono_mb_emit_byte (mb, CEE_RET);
8529
8530 res = mono_mb_create_and_cache (cache, method,
8531 mb, sig, sig->param_count + 16);
8532 mono_mb_free (mb);
8533
8534 header = ((MonoMethodNormal *)res)->header;
8535 header->num_clauses = 1;
8536 header->clauses = clause;
8537
8538 return res;
8539 }
8540
8541
8542 /*
8543 * the returned method calls 'method' unboxing the this argument
8544 */
8545 MonoMethod *
8546 mono_marshal_get_unbox_wrapper (MonoMethod *method)
8547 {
8548 MonoMethodSignature *sig = mono_method_signature (method);
8549 int i;
8550 MonoMethodBuilder *mb;
8551 MonoMethod *res;
8552 GHashTable *cache;
8553
8554 cache = method->klass->image->unbox_wrapper_cache;
8555 if ((res = mono_marshal_find_in_cache (cache, method)))
8556 return res;
8557
8558 mb = mono_mb_new (method->klass, method->name, MONO_WRAPPER_UNBOX);
8559
8560 g_assert (sig->hasthis);
8561
8562 mono_mb_emit_ldarg (mb, 0);
8563 mono_mb_emit_icon (mb, sizeof (MonoObject));
8564 mono_mb_emit_byte (mb, CEE_ADD);
8565 for (i = 0; i < sig->param_count; ++i)
8566 mono_mb_emit_ldarg (mb, i + 1);
8567 mono_mb_emit_managed_call (mb, method, NULL);
8568 mono_mb_emit_byte (mb, CEE_RET);
8569
8570 res = mono_mb_create_and_cache (cache, method,
8571 mb, sig, sig->param_count + 16);
8572 mono_mb_free (mb);
8573
8574 /* printf ("CODE FOR %s: \n%s.\n", mono_method_full_name (res, TRUE), mono_disasm_code (0, res, ((MonoMethodNormal*)res)->header->code, ((MonoMethodNormal*)res)->header->code + ((MonoMethodNormal*)res)->header->code_size)); */
8575
8576 return res;
8577 }
8578
8579 MonoMethod*
8580 mono_marshal_get_stelemref ()
8581 {
8582 static MonoMethod* ret = NULL;
8583 MonoMethodSignature *sig;
8584 MonoMethodBuilder *mb;
8585
8586 guint32 b1, b2, b3, b4;
8587 guint32 copy_pos;
8588 int aklass, vklass;
8589 int array_slot_addr;
8590
8591 if (ret)
8592 return ret;
8593
8594 mb = mono_mb_new (mono_defaults.object_class, "stelemref", MONO_WRAPPER_STELEMREF);
8595
8596
8597 sig = mono_metadata_signature_alloc (mono_defaults.corlib, 3);
8598
8599 /* void stelemref (void* array, int idx, void* value) */
8600 sig->ret = &mono_defaults.void_class->byval_arg;
8601 sig->params [0] = &mono_defaults.object_class->byval_arg;
8602 sig->params [1] = &mono_defaults.int_class->byval_arg; /* this is a natural sized int */
8603 sig->params [2] = &mono_defaults.object_class->byval_arg;
8604
8605 aklass = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
8606 vklass = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
8607 array_slot_addr = mono_mb_add_local (mb, &mono_defaults.object_class->this_arg);
8608
8609 /*
8610 the method:
8611 <ldelema (bound check)>
8612 if (!value)
8613 goto store;
8614
8615 aklass = array->vtable->klass->element_class;
8616 vklass = value->vtable->klass;
8617
8618 if (vklass->idepth < aklass->idepth)
8619 goto long;
8620
8621 if (vklass->supertypes [aklass->idepth - 1] != aklass)
8622 goto long;
8623
8624 store:
8625 *array_slot_addr = value;
8626 return;
8627
8628 long:
8629 if (mono_object_isinst (value, aklass))
8630 goto store;
8631
8632 throw new ArrayTypeMismatchException ();
8633 */
8634
8635 /* ldelema (implicit bound check) */
8636 mono_mb_emit_ldarg (mb, 0);
8637 mono_mb_emit_ldarg (mb, 1);
8638 mono_mb_emit_op (mb, CEE_LDELEMA, mono_defaults.object_class);
8639 mono_mb_emit_stloc (mb, array_slot_addr);
8640
8641 /* if (!value) goto do_store */
8642 mono_mb_emit_ldarg (mb, 2);
8643 b1 = mono_mb_emit_branch (mb, CEE_BRFALSE);
8644
8645 /* aklass = array->vtable->klass->element_class */
8646 mono_mb_emit_ldarg (mb, 0);
8647 mono_mb_emit_ldflda (mb, G_STRUCT_OFFSET (MonoObject, vtable));
8648 mono_mb_emit_byte (mb, CEE_LDIND_I);
8649 mono_mb_emit_ldflda (mb, G_STRUCT_OFFSET (MonoVTable, klass));
8650 mono_mb_emit_byte (mb, CEE_LDIND_I);
8651 mono_mb_emit_ldflda (mb, G_STRUCT_OFFSET (MonoClass, element_class));
8652 mono_mb_emit_byte (mb, CEE_LDIND_I);
8653 mono_mb_emit_stloc (mb, aklass);
8654
8655 /* vklass = value->vtable->klass */
8656 mono_mb_emit_ldarg (mb, 2);
8657 mono_mb_emit_ldflda (mb, G_STRUCT_OFFSET (MonoObject, vtable));
8658 mono_mb_emit_byte (mb, CEE_LDIND_I);
8659 mono_mb_emit_ldflda (mb, G_STRUCT_OFFSET (MonoVTable, klass));
8660 mono_mb_emit_byte (mb, CEE_LDIND_I);
8661 mono_mb_emit_stloc (mb, vklass);
8662
8663 /* if (vklass->idepth < aklass->idepth) goto failue */
8664 mono_mb_emit_ldloc (mb, vklass);
8665 mono_mb_emit_ldflda (mb, G_STRUCT_OFFSET (MonoClass, idepth));
8666 mono_mb_emit_byte (mb, CEE_LDIND_U2);
8667
8668 mono_mb_emit_ldloc (mb, aklass);
8669 mono_mb_emit_ldflda (mb, G_STRUCT_OFFSET (MonoClass, idepth));
8670 mono_mb_emit_byte (mb, CEE_LDIND_U2);
8671
8672 b2 = mono_mb_emit_branch (mb, CEE_BLT_UN);
8673
8674 /* if (vklass->supertypes [aklass->idepth - 1] != aklass) goto failure */
8675 mono_mb_emit_ldloc (mb, vklass);
8676 mono_mb_emit_ldflda (mb, G_STRUCT_OFFSET (MonoClass, supertypes));
8677 mono_mb_emit_byte (mb, CEE_LDIND_I);
8678
8679 mono_mb_emit_ldloc (mb, aklass);
8680 mono_mb_emit_ldflda (mb, G_STRUCT_OFFSET (MonoClass, idepth));
8681 mono_mb_emit_byte (mb, CEE_LDIND_U2);
8682 mono_mb_emit_icon (mb, 1);
8683 mono_mb_emit_byte (mb, CEE_SUB);
8684 mono_mb_emit_icon (mb, sizeof (void*));
8685 mono_mb_emit_byte (mb, CEE_MUL);
8686 mono_mb_emit_byte (mb, CEE_ADD);
8687 mono_mb_emit_byte (mb, CEE_LDIND_I);
8688
8689 mono_mb_emit_ldloc (mb, aklass);
8690
8691 b3 = mono_mb_emit_branch (mb, CEE_BNE_UN);
8692
8693 copy_pos = mb->pos;
8694 /* do_store */
8695 mono_mb_patch_branch (mb, b1);
8696 mono_mb_emit_ldloc (mb, array_slot_addr);
8697 mono_mb_emit_ldarg (mb, 2);
8698 mono_mb_emit_byte (mb, CEE_STIND_REF);
8699
8700 mono_mb_emit_byte (mb, CEE_RET);
8701
8702 /* the hard way */
8703 mono_mb_patch_branch (mb, b2);
8704 mono_mb_patch_branch (mb, b3);
8705
8706 mono_mb_emit_ldarg (mb, 2);
8707 mono_mb_emit_ldloc (mb, aklass);
8708 mono_mb_emit_icall (mb, mono_object_isinst);
8709
8710 b4 = mono_mb_emit_branch (mb, CEE_BRTRUE);
8711 mono_mb_patch_addr (mb, b4, copy_pos - (b4 + 4));
8712 mono_mb_emit_exception (mb, "ArrayTypeMismatchException", NULL);
8713
8714 mono_mb_emit_byte (mb, CEE_RET);
8715 ret = mono_mb_create_method (mb, sig, 4);
8716 mono_mb_free (mb);
8717 return ret;
8718 }
8719
8720 typedef struct {
8721 int rank;
8722 int elem_size;
8723 MonoMethod *method;
8724 } ArrayElemAddr;
8725
8726 /* LOCKING: vars accessed under the marshal lock */
8727 static ArrayElemAddr *elem_addr_cache = NULL;
8728 static int elem_addr_cache_size = 0;
8729 static int elem_addr_cache_next = 0;
8730
8731 /**
8732 * mono_marshal_get_array_address:
8733 * @rank: rank of the array type
8734 * @elem_size: size in bytes of an element of an array.
8735 *
8736 * Returns a MonoMethd that implements the code to get the address
8737 * of an element in a multi-dimenasional array of @rank dimensions.
8738 * The returned method takes an array as the first argument and then
8739 * @rank indexes for the @rank dimensions.
8740 */
8741 MonoMethod*
8742 mono_marshal_get_array_address (int rank, int elem_size)
8743 {
8744 MonoMethod *ret;
8745 MonoMethodBuilder *mb;
8746 MonoMethodSignature *sig;
8747 int i, bounds, ind, realidx;
8748 int branch_pos, *branch_positions;
8749 int cached;
8750
8751 ret = NULL;
8752 mono_marshal_lock ();
8753 for (i = 0; i < elem_addr_cache_next; ++i) {
8754 if (elem_addr_cache [i].rank == rank && elem_addr_cache [i].elem_size == elem_size) {
8755 ret = elem_addr_cache [i].method;
8756 break;
8757 }
8758 }
8759 mono_marshal_unlock ();
8760 if (ret)
8761 return ret;
8762
8763 branch_positions = g_new0 (int, rank);
8764
8765 sig = mono_metadata_signature_alloc (mono_defaults.corlib, 1 + rank);
8766
8767 /* void* address (void* array, int idx0, int idx1, int idx2, ...) */
8768 sig->ret = &mono_defaults.int_class->byval_arg;
8769 sig->params [0] = &mono_defaults.object_class->byval_arg;
8770 for (i = 0; i < rank; ++i) {
8771 sig->params [i + 1] = &mono_defaults.int32_class->byval_arg;
8772 }
8773
8774 mb = mono_mb_new (mono_defaults.object_class, "ElementAddr", MONO_WRAPPER_MANAGED_TO_MANAGED);
8775
8776 bounds = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
8777 ind = mono_mb_add_local (mb, &mono_defaults.int32_class->byval_arg);
8778 realidx = mono_mb_add_local (mb, &mono_defaults.int32_class->byval_arg);
8779
8780 /* bounds = array->bounds; */
8781 mono_mb_emit_ldarg (mb, 0);
8782 mono_mb_emit_ldflda (mb, G_STRUCT_OFFSET (MonoArray, bounds));
8783 mono_mb_emit_byte (mb, CEE_LDIND_I);
8784 mono_mb_emit_stloc (mb, bounds);
8785
8786 /* ind is the overall element index, realidx is the partial index in a single dimension */
8787 /* ind = idx0 - bounds [0].lower_bound */
8788 mono_mb_emit_ldarg (mb, 1);
8789 mono_mb_emit_ldloc (mb, bounds);
8790 mono_mb_emit_icon (mb, G_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
8791 mono_mb_emit_byte (mb, CEE_ADD);
8792 mono_mb_emit_byte (mb, CEE_LDIND_I4);
8793 mono_mb_emit_byte (mb, CEE_SUB);
8794 mono_mb_emit_stloc (mb, ind);
8795 /* if (ind >= bounds [0].length) goto exeception; */
8796 mono_mb_emit_ldloc (mb, ind);
8797 mono_mb_emit_ldloc (mb, bounds);
8798 mono_mb_emit_icon (mb, G_STRUCT_OFFSET (MonoArrayBounds, length));
8799 mono_mb_emit_byte (mb, CEE_ADD);
8800 mono_mb_emit_byte (mb, CEE_LDIND_I4);
8801 /* note that we use unsigned comparison */
8802 branch_pos = mono_mb_emit_branch (mb, CEE_BGE_UN);
8803
8804 /* For large ranks (> 4?) use a loop n IL later to reduce code size.
8805 * We could also decide to ignore the passed elem_size and get it
8806 * from the array object, to reduce the number of methods we generate:
8807 * the additional cost is 3 memory loads and a non-immediate mul.
8808 */
8809 for (i = 1; i < rank; ++i) {
8810 /* realidx = idxi - bounds [i].lower_bound */
8811 mono_mb_emit_ldarg (mb, 1 + i);
8812 mono_mb_emit_ldloc (mb, bounds);
8813 mono_mb_emit_icon (mb, (i * sizeof (MonoArrayBounds)) + G_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
8814 mono_mb_emit_byte (mb, CEE_ADD);
8815 mono_mb_emit_byte (mb, CEE_LDIND_I4);
8816 mono_mb_emit_byte (mb, CEE_SUB);
8817 mono_mb_emit_stloc (mb, realidx);
8818 /* if (realidx >= bounds [i].length) goto exeception; */
8819 mono_mb_emit_ldloc (mb, realidx);
8820 mono_mb_emit_ldloc (mb, bounds);
8821 mono_mb_emit_icon (mb, (i * sizeof (MonoArrayBounds)) + G_STRUCT_OFFSET (MonoArrayBounds, length));
8822 mono_mb_emit_byte (mb, CEE_ADD);
8823 mono_mb_emit_byte (mb, CEE_LDIND_I4);
8824 branch_positions [i] = mono_mb_emit_branch (mb, CEE_BGE_UN);
8825 /* ind = ind * bounds [i].length + realidx */
8826 mono_mb_emit_ldloc (mb, ind);
8827 mono_mb_emit_ldloc (mb, bounds);
8828 mono_mb_emit_icon (mb, (i * sizeof (MonoArrayBounds)) + G_STRUCT_OFFSET (MonoArrayBounds, length));
8829 mono_mb_emit_byte (mb, CEE_ADD);
8830 mono_mb_emit_byte (mb, CEE_LDIND_I4);
8831 mono_mb_emit_byte (mb, CEE_MUL);
8832 mono_mb_emit_ldloc (mb, realidx);
8833 mono_mb_emit_byte (mb, CEE_ADD);
8834 mono_mb_emit_stloc (mb, ind);
8835 }
8836
8837 /* return array->vector + ind * element_size */
8838 mono_mb_emit_ldarg (mb, 0);
8839 mono_mb_emit_ldflda (mb, G_STRUCT_OFFSET (MonoArray, vector));
8840 mono_mb_emit_ldloc (mb, ind);
8841 mono_mb_emit_icon (mb, elem_size);
8842 mono_mb_emit_byte (mb, CEE_MUL);
8843 mono_mb_emit_byte (mb, CEE_ADD);
8844 mono_mb_emit_byte (mb, CEE_RET);
8845
8846 /* patch the branches to get here and throw */
8847 for (i = 1; i < rank; ++i) {
8848 mono_mb_patch_branch (mb, branch_positions [i]);
8849 }
8850 mono_mb_patch_branch (mb, branch_pos);
8851 /* throw exception */
8852 mono_mb_emit_exception (mb, "IndexOutOfRangeException", NULL);
8853
8854 g_free (branch_positions);
8855 mono_loader_lock ();
8856 ret = mono_mb_create_method (mb, sig, 4);
8857 mono_loader_unlock ();
8858 mono_mb_free (mb);
8859
8860 /* cache the result */
8861 cached = 0;
8862 mono_marshal_lock ();
8863 for (i = 0; i < elem_addr_cache_next; ++i) {
8864 if (elem_addr_cache [i].rank == rank && elem_addr_cache [i].elem_size == elem_size) {
8865 /* FIXME: free ret */
8866 ret = elem_addr_cache [i].method;
8867 cached = TRUE;
8868 break;
8869 }
8870 }
8871 if (!cached) {
8872 if (elem_addr_cache_next >= elem_addr_cache_size) {
8873 int new_size = elem_addr_cache_size + 4;
8874 ArrayElemAddr *new_array = g_new0 (ArrayElemAddr, new_size);
8875 memcpy (new_array, elem_addr_cache, elem_addr_cache_size * sizeof (ArrayElemAddr));
8876 g_free (elem_addr_cache);
8877 elem_addr_cache = new_array;
8878 elem_addr_cache_size = new_size;
8879 }
8880 elem_addr_cache [elem_addr_cache_next].rank = rank;
8881 elem_addr_cache [elem_addr_cache_next].elem_size = elem_size;
8882 elem_addr_cache [elem_addr_cache_next].method = ret;
8883 }
8884 mono_marshal_unlock ();
8885 return ret;
8886 }
8887
8888 MonoMethod*
8889 mono_marshal_get_write_barrier (void)
8890 {
8891 static MonoMethod* ret = NULL;
8892 MonoMethodSignature *sig;
8893 MonoMethodBuilder *mb;
8894 int max_stack = 2;
8895
8896 if (ret)
8897 return ret;
8898
8899 mb = mono_mb_new (mono_defaults.object_class, "writebarrier", MONO_WRAPPER_WRITE_BARRIER);
8900
8901 sig = mono_metadata_signature_alloc (mono_defaults.corlib, 2);
8902
8903 /* void writebarrier (MonoObject** addr, MonoObject* obj) */
8904 sig->ret = &mono_defaults.void_class->byval_arg;
8905 sig->params [0] = &mono_defaults.object_class->this_arg;
8906 sig->params [1] = &mono_defaults.object_class->byval_arg;
8907
8908 /* just the store right now: add an hook for the GC to use, maybe something
8909 * that can be used for stelemref as well
8910 * We need a write barrier variant to be used with struct copies as well, though
8911 * there are also other approaches possible, like writing a wrapper specific to
8912 * the struct or to the reference pattern in the struct...
8913 * Depending on the GC, we may want variants that take the object we store to
8914 * when it is available.
8915 */
8916 mono_mb_emit_ldarg (mb, 0);
8917 mono_mb_emit_ldarg (mb, 1);
8918 mono_mb_emit_icall (mb, mono_gc_wbarrier_generic_store);
8919 /*mono_mb_emit_byte (mb, CEE_STIND_REF);*/
8920
8921 mono_mb_emit_byte (mb, CEE_RET);
8922
8923 ret = mono_mb_create_method (mb, sig, max_stack);
8924 mono_mb_free (mb);
8925 return ret;
8926 }
8927
8928 void*
8929 mono_marshal_alloc (gulong size)
8930 {
8931 gpointer res;
8932
8933 #ifdef PLATFORM_WIN32
8934 res = CoTaskMemAlloc (size);
8935 #else
8936 res = g_try_malloc ((gulong)size);
8937 if (!res)
8938 mono_gc_out_of_memory ((gulong)size);
8939 #endif
8940 return res;
8941 }
8942
8943 void
8944 mono_marshal_free (gpointer ptr)
8945 {
8946 #ifdef PLATFORM_WIN32
8947 CoTaskMemFree (ptr);
8948 #else
8949 g_free (ptr);
8950 #endif
8951 }
8952
8953 void
8954 mono_marshal_free_array (gpointer *ptr, int size)
8955 {
8956 int i;
8957
8958 if (!ptr)
8959 return;
8960
8961 for (i = 0; i < size; i++)
8962 if (ptr [i])
8963 g_free (ptr [i]);
8964 }
8965
8966 void *
8967 mono_marshal_realloc (gpointer ptr, gpointer size)
8968 {
8969 MONO_ARCH_SAVE_REGS;
8970
8971 return g_try_realloc (ptr, (gulong)size);
8972 }
8973
8974 void *
8975 mono_marshal_string_to_utf16 (MonoString *s)
8976 {
8977 return s ? mono_string_chars (s) : NULL;
8978 }
8979
8980 /**
8981 * mono_marshal_set_last_error:
8982 *
8983 * This function is invoked to set the last error value from a P/Invoke call
8984 * which has SetLastError set.
8985 */
8986 void
8987 mono_marshal_set_last_error (void)
8988 {
8989 #ifdef WIN32
8990 TlsSetValue (last_error_tls_id, GINT_TO_POINTER (GetLastError ()));
8991 #else
8992 TlsSetValue (last_error_tls_id, GINT_TO_POINTER (errno));
8993 #endif
8994 }
8995
8996 static void
8997 mono_marshal_set_last_error_windows (int error)
8998 {
8999 #ifdef WIN32
9000 TlsSetValue (last_error_tls_id, GINT_TO_POINTER (error));
9001 #endif
9002 }
9003
9004 void
9005 ves_icall_System_Runtime_InteropServices_Marshal_copy_to_unmanaged (MonoArray *src, gint32 start_index,
9006 gpointer dest, gint32 length)
9007 {
9008 int element_size;
9009 void *source_addr;
9010
9011 MONO_ARCH_SAVE_REGS;
9012
9013 MONO_CHECK_ARG_NULL (src);
9014 MONO_CHECK_ARG_NULL (dest);
9015
9016 g_assert (src->obj.vtable->klass->rank == 1);
9017 g_assert (start_index >= 0);
9018 g_assert (length >= 0);
9019 g_assert (start_index + length <= mono_array_length (src));
9020
9021 element_size = mono_array_element_size (src->obj.vtable->klass);
9022
9023 /* no references should be involved */
9024 source_addr = mono_array_addr_with_size (src, element_size, start_index);
9025
9026 memcpy (dest, source_addr, length * element_size);
9027 }
9028
9029 void
9030 ves_icall_System_Runtime_InteropServices_Marshal_copy_from_unmanaged (gpointer src, gint32 start_index,
9031 MonoArray *dest, gint32 length)
9032 {
9033 int element_size;
9034 void *dest_addr;
9035
9036 MONO_ARCH_SAVE_REGS;
9037
9038 MONO_CHECK_ARG_NULL (src);
9039 MONO_CHECK_ARG_NULL (dest);
9040
9041 g_assert (dest->obj.vtable->klass->rank == 1);
9042 g_assert (start_index >= 0);
9043 g_assert (length >= 0);
9044 g_assert (start_index + length <= mono_array_length (dest));
9045
9046 element_size = mono_array_element_size (dest->obj.vtable->klass);
9047
9048 /* no references should be involved */
9049 dest_addr = mono_array_addr_with_size (dest, element_size, start_index);
9050
9051 memcpy (dest_addr, src, length * element_size);
9052 }
9053
9054 #if NO_UNALIGNED_ACCESS
9055 #define RETURN_UNALIGNED(type, addr) \
9056 { \
9057 type val; \
9058 memcpy(&val, p + offset, sizeof(val)); \
9059 return val; \
9060 }
9061 #define WRITE_UNALIGNED(type, addr, val) \
9062 memcpy(addr, &val, sizeof(type))
9063 #else
9064 #define RETURN_UNALIGNED(type, addr) \
9065 return *(type*)(p + offset);
9066 #define WRITE_UNALIGNED(type, addr, val) \
9067 (*(type *)(addr) = (val))
9068 #endif
9069
9070 gpointer
9071 ves_icall_System_Runtime_InteropServices_Marshal_ReadIntPtr (gpointer ptr, gint32 offset)
9072 {
9073 char *p = ptr;
9074
9075 MONO_ARCH_SAVE_REGS;
9076
9077 RETURN_UNALIGNED(gpointer, p + offset);
9078 }
9079
9080 unsigned char
9081 ves_icall_System_Runtime_InteropServices_Marshal_ReadByte (gpointer ptr, gint32 offset)
9082 {
9083 char *p = ptr;
9084
9085 MONO_ARCH_SAVE_REGS;
9086
9087 return *(unsigned char*)(p + offset);
9088 }
9089
9090 gint16
9091 ves_icall_System_Runtime_InteropServices_Marshal_ReadInt16 (gpointer ptr, gint32 offset)
9092 {
9093 char *p = ptr;
9094
9095 MONO_ARCH_SAVE_REGS;
9096
9097 RETURN_UNALIGNED(gint16, p + offset);
9098 }
9099
9100 gint32
9101 ves_icall_System_Runtime_InteropServices_Marshal_ReadInt32 (gpointer ptr, gint32 offset)
9102 {
9103 char *p = ptr;
9104
9105 MONO_ARCH_SAVE_REGS;
9106
9107 RETURN_UNALIGNED(gint32, p + offset);
9108 }
9109
9110 gint64
9111 ves_icall_System_Runtime_InteropServices_Marshal_ReadInt64 (gpointer ptr, gint32 offset)
9112 {
9113 char *p = ptr;
9114
9115 MONO_ARCH_SAVE_REGS;
9116
9117 RETURN_UNALIGNED(gint64, p + offset);
9118 }
9119
9120 void
9121 ves_icall_System_Runtime_InteropServices_Marshal_WriteByte (gpointer ptr, gint32 offset, unsigned char val)
9122 {
9123 char *p = ptr;
9124
9125 MONO_ARCH_SAVE_REGS;
9126
9127 *(unsigned char*)(p + offset) = val;
9128 }
9129
9130 void
9131 ves_icall_System_Runtime_InteropServices_Marshal_WriteIntPtr (gpointer ptr, gint32 offset, gpointer val)
9132 {
9133 char *p = ptr;
9134
9135 MONO_ARCH_SAVE_REGS;
9136
9137 WRITE_UNALIGNED(gpointer, p + offset, val);
9138 }
9139
9140 void
9141 ves_icall_System_Runtime_InteropServices_Marshal_WriteInt16 (gpointer ptr, gint32 offset, gint16 val)
9142 {
9143 char *p = ptr;
9144
9145 MONO_ARCH_SAVE_REGS;
9146
9147 WRITE_UNALIGNED(gint16, p + offset, val);
9148 }
9149
9150 void
9151 ves_icall_System_Runtime_InteropServices_Marshal_WriteInt32 (gpointer ptr, gint32 offset, gint32 val)
9152 {
9153 char *p = ptr;
9154
9155 MONO_ARCH_SAVE_REGS;
9156
9157 WRITE_UNALIGNED(gint32, p + offset, val);
9158 }
9159
9160 void
9161 ves_icall_System_Runtime_InteropServices_Marshal_WriteInt64 (gpointer ptr, gint32 offset, gint64 val)
9162 {
9163 char *p = ptr;
9164
9165 MONO_ARCH_SAVE_REGS;
9166
9167 WRITE_UNALIGNED(gint64, p + offset, val);
9168 }
9169
9170 MonoString *
9171 ves_icall_System_Runtime_InteropServices_Marshal_PtrToStringAnsi (char *ptr)
9172 {
9173 MONO_ARCH_SAVE_REGS;
9174
9175 if (ptr == NULL)
9176 return NULL;
9177 else
9178 return mono_string_new (mono_domain_get (), ptr);
9179 }
9180
9181 MonoString *
9182 ves_icall_System_Runtime_InteropServices_Marshal_PtrToStringAnsi_len (char *ptr, gint32 len)
9183 {
9184 MONO_ARCH_SAVE_REGS;
9185
9186 if (ptr == NULL) {
9187 mono_raise_exception (mono_get_exception_argument_null ("ptr"));
9188 g_assert_not_reached ();
9189 return NULL;
9190 } else {
9191 return mono_string_new_len (mono_domain_get (), ptr, len);
9192 }
9193 }
9194
9195 MonoString *
9196 ves_icall_System_Runtime_InteropServices_Marshal_PtrToStringUni (guint16 *ptr)
9197 {
9198 MonoDomain *domain = mono_domain_get ();
9199 int len = 0;
9200 guint16 *t = ptr;
9201
9202 MONO_ARCH_SAVE_REGS;
9203
9204 if (ptr == NULL)
9205 return NULL;
9206
9207 while (*t++)
9208 len++;
9209
9210 return mono_string_new_utf16 (domain, ptr, len);
9211 }
9212
9213 MonoString *
9214 ves_icall_System_Runtime_InteropServices_Marshal_PtrToStringUni_len (guint16 *ptr, gint32 len)
9215 {
9216 MonoDomain *domain = mono_domain_get ();
9217
9218 MONO_ARCH_SAVE_REGS;
9219
9220 if (ptr == NULL) {
9221 mono_raise_exception (mono_get_exception_argument_null ("ptr"));
9222 g_assert_not_reached ();
9223 return NULL;
9224 } else {
9225 return mono_string_new_utf16 (domain, ptr, len);
9226 }
9227 }
9228
9229 MonoString *
9230 ves_icall_System_Runtime_InteropServices_Marshal_PtrToStringBSTR (gpointer ptr)
9231 {
9232 MONO_ARCH_SAVE_REGS;
9233
9234 return mono_string_from_bstr(ptr);
9235 }
9236
9237 gpointer
9238 ves_icall_System_Runtime_InteropServices_Marshal_StringToBSTR (MonoString* ptr)
9239 {
9240 MONO_ARCH_SAVE_REGS;
9241
9242 return mono_string_to_bstr(ptr);
9243 }
9244
9245 // STDCALL on windows, CDECL everywhere else to work with XPCOM and MainWin COM
9246 #ifdef PLATFORM_WIN32
9247 #ifdef _MSC_VER
9248 #define STDCALL __stdcall
9249 #else
9250 #define STDCALL __attribute__((stdcall))
9251 #endif
9252 #else
9253 #define STDCALL
9254 #endif
9255
9256 typedef struct
9257 {
9258 int (STDCALL *QueryInterface)(gpointer pUnk, gpointer riid, gpointer* ppv);
9259 int (STDCALL *AddRef)(gpointer pUnk);
9260 int (STDCALL *Release)(gpointer pUnk);
9261 } MonoIUnknown;
9262
9263 void
9264 ves_icall_System_Runtime_InteropServices_Marshal_FreeBSTR (gpointer ptr)
9265 {
9266 MONO_ARCH_SAVE_REGS;
9267
9268 mono_free_bstr (ptr);
9269 }
9270
9271 int
9272 ves_icall_System_Runtime_InteropServices_Marshal_AddRef (gpointer pUnk)
9273 {
9274 MONO_ARCH_SAVE_REGS;
9275
9276 return (*(MonoIUnknown**)pUnk)->AddRef(pUnk);
9277 }
9278
9279 int
9280 ves_icall_System_Runtime_InteropServices_Marshal_QueryInterface (gpointer pUnk, gpointer riid, gpointer* ppv)
9281 {
9282 MONO_ARCH_SAVE_REGS;
9283
9284 return (*(MonoIUnknown**)pUnk)->QueryInterface(pUnk, riid, ppv);
9285 }
9286
9287 int
9288 ves_icall_System_Runtime_InteropServices_Marshal_Release (gpointer pUnk)
9289 {
9290 MONO_ARCH_SAVE_REGS;
9291
9292 return (*(MonoIUnknown**)pUnk)->Release(pUnk);
9293 }
9294
9295 guint32
9296 ves_icall_System_Runtime_InteropServices_Marshal_GetComSlotForMethodInfoInternal (MonoReflectionMethod *m)
9297 {
9298 MONO_ARCH_SAVE_REGS;
9299
9300 return cominterop_get_com_slot_for_method (m->method);
9301 }
9302
9303 guint32
9304 ves_icall_System_Runtime_InteropServices_Marshal_GetLastWin32Error (void)
9305 {
9306 MONO_ARCH_SAVE_REGS;
9307
9308 return (GPOINTER_TO_INT (TlsGetValue (last_error_tls_id)));
9309 }
9310
9311 guint32
9312 ves_icall_System_Runtime_InteropServices_Marshal_SizeOf (MonoReflectionType *rtype)
9313 {
9314 MonoClass *klass;
9315 MonoType *type;
9316 guint32 layout;
9317
9318 MONO_ARCH_SAVE_REGS;
9319
9320 MONO_CHECK_ARG_NULL (rtype);
9321
9322 type = rtype->type;
9323 klass = mono_class_from_mono_type (type);
9324 layout = (klass->flags & TYPE_ATTRIBUTE_LAYOUT_MASK);
9325
9326 if (layout == TYPE_ATTRIBUTE_AUTO_LAYOUT) {
9327 gchar *msg;
9328 MonoException *exc;
9329
9330 msg = g_strdup_printf ("Type %s cannot be marshaled as an unmanaged structure.", klass->name);
9331 exc = mono_get_exception_argument ("t", msg);
9332 g_free (msg);
9333 mono_raise_exception (exc);
9334 }
9335
9336
9337 return mono_class_native_size (klass, NULL);
9338 }
9339
9340 void
9341 ves_icall_System_Runtime_InteropServices_Marshal_StructureToPtr (MonoObject *obj, gpointer dst, MonoBoolean delete_old)
9342 {
9343 MonoMethod *method;
9344 gpointer pa [3];
9345
9346 MONO_ARCH_SAVE_REGS;
9347
9348 MONO_CHECK_ARG_NULL (obj);
9349 MONO_CHECK_ARG_NULL (dst);
9350
9351 method = mono_marshal_get_struct_to_ptr (obj->vtable->klass);
9352
9353 pa [0] = obj;
9354 pa [1] = &dst;
9355 pa [2] = &delete_old;
9356
9357 mono_runtime_invoke (method, NULL, pa, NULL);
9358 }
9359
9360 static void
9361 ptr_to_structure (gpointer src, MonoObject *dst)
9362 {
9363 MonoMethod *method;
9364 gpointer pa [2];
9365
9366 method = mono_marshal_get_ptr_to_struct (dst->vtable->klass);
9367
9368 pa [0] = &src;
9369 pa [1] = dst;
9370
9371 mono_runtime_invoke (method, NULL, pa, NULL);
9372 }
9373
9374 void
9375 ves_icall_System_Runtime_InteropServices_Marshal_PtrToStructure (gpointer src, MonoObject *dst)
9376 {
9377 MonoType *t;
9378
9379 MONO_ARCH_SAVE_REGS;
9380
9381 MONO_CHECK_ARG_NULL (src);
9382 MONO_CHECK_ARG_NULL (dst);
9383
9384 t = mono_type_get_underlying_type (mono_class_get_type (dst->vtable->klass));
9385
9386 if (t->type == MONO_TYPE_VALUETYPE) {
9387 MonoException *exc;
9388 gchar *tmp;
9389
9390 tmp = g_strdup_printf ("Destination is a boxed value type.");
9391 exc = mono_get_exception_argument ("dst", tmp);
9392 g_free (tmp);
9393
9394 mono_raise_exception (exc);
9395 return;
9396 }
9397
9398 ptr_to_structure (src, dst);
9399 }
9400
9401 MonoObject *
9402 ves_icall_System_Runtime_InteropServices_Marshal_PtrToStructure_type (gpointer src, MonoReflectionType *type)
9403 {
9404 MonoDomain *domain = mono_domain_get ();
9405 MonoObject *res;
9406
9407 MONO_ARCH_SAVE_REGS;
9408
9409 MONO_CHECK_ARG_NULL (src);
9410 MONO_CHECK_ARG_NULL (type);
9411
9412 res = mono_object_new (domain, mono_class_from_mono_type (type->type));
9413
9414 ptr_to_structure (src, res);
9415
9416 return res;
9417 }
9418
9419 int
9420 ves_icall_System_Runtime_InteropServices_Marshal_OffsetOf (MonoReflectionType *type, MonoString *field_name)
9421 {
9422 MonoMarshalType *info;
9423 MonoClass *klass;
9424 char *fname;
9425 int match_index = -1;
9426
9427 MONO_ARCH_SAVE_REGS;
9428
9429 MONO_CHECK_ARG_NULL (type);
9430 MONO_CHECK_ARG_NULL (field_name);
9431
9432 fname = mono_string_to_utf8 (field_name);
9433 klass = mono_class_from_mono_type (type->type);
9434
9435 while (klass && match_index == -1) {
9436 MonoClassField* field;
9437 int i = 0;
9438 gpointer iter = NULL;
9439 while ((field = mono_class_get_fields (klass, &iter))) {
9440 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
9441 continue;
9442 if (!strcmp (fname, field->name)) {
9443 match_index = i;
9444 break;
9445 }
9446 i ++;
9447 }
9448
9449 if (match_index == -1)
9450 klass = klass->parent;
9451 }
9452
9453 g_free (fname);
9454
9455 if(match_index == -1) {
9456 MonoException* exc;
9457 gchar *tmp;
9458
9459 /* Get back original class instance */
9460 klass = mono_class_from_mono_type (type->type);
9461
9462 tmp = g_strdup_printf ("Field passed in is not a marshaled member of the type %s", klass->name);
9463 exc = mono_get_exception_argument ("fieldName", tmp);
9464 g_free (tmp);
9465
9466 mono_raise_exception ((MonoException*)exc);
9467 }
9468
9469 info = mono_marshal_load_type_info (klass);
9470 return info->fields [match_index].offset;
9471 }
9472
9473 gpointer
9474 ves_icall_System_Runtime_InteropServices_Marshal_StringToHGlobalAnsi (MonoString *string)
9475 {
9476 MONO_ARCH_SAVE_REGS;
9477
9478 return mono_string_to_utf8 (string);
9479 }
9480
9481 gpointer
9482 ves_icall_System_Runtime_InteropServices_Marshal_StringToHGlobalUni (MonoString *string)
9483 {
9484 MONO_ARCH_SAVE_REGS;
9485
9486 if (string == NULL)
9487 return NULL;
9488 else {
9489 gunichar2 *res = g_malloc ((mono_string_length (string) + 1) * 2);
9490 memcpy (res, mono_string_chars (string), mono_string_length (string) * 2);
9491 res [mono_string_length (string)] = 0;
9492 return res;
9493 }
9494 }
9495
9496 static void
9497 mono_struct_delete_old (MonoClass *klass, char *ptr)
9498 {
9499 MonoMarshalType *info;
9500 int i;
9501
9502 info = mono_marshal_load_type_info (klass);
9503
9504 for (i = 0; i < info->num_fields; i++) {
9505 MonoMarshalNative ntype;
9506 MonoMarshalConv conv;
9507 MonoType *ftype = info->fields [i].field->type;
9508 char *cpos;
9509
9510 if (ftype->attrs & FIELD_ATTRIBUTE_STATIC)
9511 continue;
9512
9513 ntype = mono_type_to_unmanaged (ftype, info->fields [i].mspec, TRUE,
9514 klass->unicode, &conv);
9515
9516 cpos = ptr + info->fields [i].offset;
9517
9518 switch (conv) {
9519 case MONO_MARSHAL_CONV_NONE:
9520 if (MONO_TYPE_ISSTRUCT (ftype)) {
9521 mono_struct_delete_old (ftype->data.klass, cpos);
9522 continue;
9523 }
9524 break;
9525 case MONO_MARSHAL_CONV_STR_LPWSTR:
9526 /* We assume this field points inside a MonoString */
9527 break;
9528 case MONO_MARSHAL_CONV_STR_LPSTR:
9529 case MONO_MARSHAL_CONV_STR_LPTSTR:
9530 case MONO_MARSHAL_CONV_STR_BSTR:
9531 case MONO_MARSHAL_CONV_STR_ANSIBSTR:
9532 case MONO_MARSHAL_CONV_STR_TBSTR:
9533 mono_marshal_free (*(gpointer *)cpos);
9534 break;
9535 default:
9536 continue;
9537 }
9538 }
9539 }
9540
9541 void
9542 ves_icall_System_Runtime_InteropServices_Marshal_DestroyStructure (gpointer src, MonoReflectionType *type)
9543 {
9544 MonoClass *klass;
9545
9546 MONO_ARCH_SAVE_REGS;
9547
9548 MONO_CHECK_ARG_NULL (src);
9549 MONO_CHECK_ARG_NULL (type);
9550
9551 klass = mono_class_from_mono_type (type->type);
9552
9553 mono_struct_delete_old (klass, (char *)src);
9554 }
9555
9556
9557 /* FIXME: on win32 we should probably use GlobalAlloc(). */
9558 void*
9559 ves_icall_System_Runtime_InteropServices_Marshal_AllocHGlobal (int size)
9560 {
9561 gpointer res;
9562
9563 MONO_ARCH_SAVE_REGS;
9564
9565 if ((gulong)size == 0)
9566 /* This returns a valid pointer for size 0 on MS.NET */
9567 size = 4;
9568
9569 res = g_try_malloc ((gulong)size);
9570 if (!res)
9571 mono_gc_out_of_memory ((gulong)size);
9572
9573 return res;
9574 }
9575
9576 void
9577 ves_icall_System_Runtime_InteropServices_Marshal_FreeHGlobal (void *ptr)
9578 {
9579 MONO_ARCH_SAVE_REGS;
9580
9581 g_free (ptr);
9582 }
9583
9584 void*
9585 ves_icall_System_Runtime_InteropServices_Marshal_AllocCoTaskMem (int size)
9586 {
9587 MONO_ARCH_SAVE_REGS;
9588
9589 #ifdef PLATFORM_WIN32
9590 return CoTaskMemAlloc (size);
9591 #else
9592 return g_try_malloc ((gulong)size);
9593 #endif
9594 }
9595
9596 void
9597 ves_icall_System_Runtime_InteropServices_Marshal_FreeCoTaskMem (void *ptr)
9598 {
9599 MONO_ARCH_SAVE_REGS;
9600
9601 #ifdef PLATFORM_WIN32
9602 CoTaskMemFree (ptr);
9603 #else
9604 g_free (ptr);
9605 #endif
9606 }
9607
9608 void*
9609 ves_icall_System_Runtime_InteropServices_Marshal_UnsafeAddrOfPinnedArrayElement (MonoArray *arrayobj, int index)
9610 {
9611 return mono_array_addr_with_size (arrayobj, mono_array_element_size (arrayobj->obj.vtable->klass), index);
9612 }
9613
9614 MonoDelegate*
9615 ves_icall_System_Runtime_InteropServices_Marshal_GetDelegateForFunctionPointerInternal (void *ftn, MonoReflectionType *type)
9616 {
9617 return mono_ftnptr_to_delegate (mono_type_get_class (type->type), ftn);
9618 }
9619
9620 /* Only used for COM RCWs */
9621 MonoObject *
9622 ves_icall_System_ComObject_CreateRCW (MonoReflectionType *type)
9623 {
9624 MonoClass *klass;
9625 MonoDomain *domain;
9626 MonoObject *obj;
9627
9628 MONO_ARCH_SAVE_REGS;
9629
9630 domain = mono_object_domain (type);
9631 klass = mono_class_from_mono_type (type->type);
9632
9633 /* call mono_object_new_alloc_specific instead of mono_object_new
9634 * because we want to actually create object. mono_object_new checks
9635 * to see if type is import and creates transparent proxy. this method
9636 * is called by the corresponding real proxy to create the real RCW.
9637 * Constructor does not need to be called. Will be called later.
9638 */
9639 obj = mono_object_new_alloc_specific (mono_class_vtable (domain, klass));
9640 return obj;
9641 }
9642
9643 static gboolean
9644 cominterop_finalizer (gpointer key, gpointer value, gpointer user_data)
9645 {
9646 ves_icall_System_Runtime_InteropServices_Marshal_Release (value);
9647 return TRUE;
9648 }
9649
9650 void
9651 ves_icall_System_ComObject_Finalizer(MonoComObject* obj)
9652 {
9653 g_assert(obj);
9654 if (obj->itf_hash)
9655 g_hash_table_foreach_remove (obj->itf_hash, cominterop_finalizer, NULL);
9656 obj->itf_hash = NULL;
9657 }
9658
9659 #define MONO_IUNKNOWN_INTERFACE_SLOT 0
9660
9661 gpointer
9662 ves_icall_System_ComObject_FindInterface (MonoComObject* obj, MonoReflectionType* type)
9663 {
9664 MonoClass* klass;
9665 g_assert(obj);
9666 g_assert(obj->itf_hash);
9667
9668 klass = mono_class_from_mono_type (type->type);
9669
9670 return g_hash_table_lookup (obj->itf_hash, GUINT_TO_POINTER ((guint)klass->interface_id));
9671 }
9672
9673 void
9674 ves_icall_System_ComObject_CacheInterface (MonoComObject* obj, MonoReflectionType* type, gpointer pItf)
9675 {
9676 MonoClass* klass;
9677 g_assert(obj);
9678 g_assert(obj->itf_hash);
9679
9680 klass = mono_class_from_mono_type (type->type);
9681
9682 g_hash_table_insert (obj->itf_hash, GUINT_TO_POINTER ((guint)klass->interface_id), pItf);
9683 }
9684
9685 gpointer
9686 ves_icall_System_ComObject_GetIUnknown (MonoComObject* obj)
9687 {
9688 g_assert(obj);
9689 if (!obj->itf_hash)
9690 return NULL;
9691 return g_hash_table_lookup (obj->itf_hash, MONO_IUNKNOWN_INTERFACE_SLOT);
9692 }
9693
9694 void
9695 ves_icall_System_ComObject_SetIUnknown (MonoComObject* obj, gpointer pUnk)
9696 {
9697 g_assert(obj);
9698 g_assert(!obj->itf_hash);
9699 obj->itf_hash = g_hash_table_new (mono_aligned_addr_hash, NULL);
9700 g_hash_table_insert (obj->itf_hash, MONO_IUNKNOWN_INTERFACE_SLOT, pUnk);
9701 }
9702
9703 /**
9704 * mono_marshal_is_loading_type_info:
9705 *
9706 * Return whenever mono_marshal_load_type_info () is being executed for KLASS by this
9707 * thread.
9708 */
9709 static gboolean
9710 mono_marshal_is_loading_type_info (MonoClass *klass)
9711 {
9712 GSList *loads_list = TlsGetValue (load_type_info_tls_id);
9713
9714 return g_slist_find (loads_list, klass) != NULL;
9715 }
9716
9717 /**
9718 * mono_marshal_load_type_info:
9719 *
9720 * Initialize klass->marshal_info using information from metadata. This function can
9721 * recursively call itself, and the caller is responsible to avoid that by calling
9722 * mono_marshal_is_loading_type_info () beforehand.
9723 *
9724 * LOCKING: Acquires the loader lock.
9725 */
9726 MonoMarshalType *
9727 mono_marshal_load_type_info (MonoClass* klass)
9728 {
9729 int j, count = 0;
9730 guint32 native_size = 0, min_align = 1;
9731 MonoMarshalType *info;
9732 MonoClassField* field;
9733 gpointer iter;
9734 guint32 layout;
9735 GSList *loads_list;
9736
9737 g_assert (klass != NULL);
9738
9739 if (klass->marshal_info)
9740 return klass->marshal_info;
9741
9742 if (!klass->inited)
9743 mono_class_init (klass);
9744
9745 mono_loader_lock ();
9746
9747 if (klass->marshal_info) {
9748 mono_loader_unlock ();
9749 return klass->marshal_info;
9750 }
9751
9752 /*
9753 * This function can recursively call itself, so we keep the list of classes which are
9754 * under initialization in a TLS list.
9755 */
9756 g_assert (!mono_marshal_is_loading_type_info (klass));
9757 loads_list = TlsGetValue (load_type_info_tls_id);
9758 loads_list = g_slist_prepend (loads_list, klass);
9759 TlsSetValue (load_type_info_tls_id, loads_list);
9760
9761 iter = NULL;
9762 while ((field = mono_class_get_fields (klass, &iter))) {
9763 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
9764 continue;
9765 if (mono_field_is_deleted (field))
9766 continue;
9767 count++;
9768 }
9769
9770 layout = klass->flags & TYPE_ATTRIBUTE_LAYOUT_MASK;
9771
9772 /* The mempool is protected by the loader lock */
9773 info = mono_mempool_alloc0 (klass->image->mempool, sizeof (MonoMarshalType) + sizeof (MonoMarshalField) * count);
9774 info->num_fields = count;
9775
9776 /* Try to find a size for this type in metadata */
9777 mono_metadata_packing_from_typedef (klass->image, klass->type_token, NULL, &native_size);
9778
9779 if (klass->parent) {
9780 int parent_size = mono_class_native_size (klass->parent, NULL);
9781
9782 /* Add parent size to real size */
9783 native_size += parent_size;
9784 info->native_size = parent_size;
9785 }
9786
9787 iter = NULL;
9788 j = 0;
9789 while ((field = mono_class_get_fields (klass, &iter))) {
9790 int size;
9791 guint32 align;
9792
9793 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
9794 continue;
9795
9796 if (mono_field_is_deleted (field))
9797 continue;
9798 if (field->type->attrs & FIELD_ATTRIBUTE_HAS_FIELD_MARSHAL)
9799 mono_metadata_field_info (klass->image, mono_metadata_token_index (mono_class_get_field_token (field)) - 1,
9800 NULL, NULL, &info->fields [j].mspec);
9801
9802 info->fields [j].field = field;
9803
9804 if ((mono_class_num_fields (klass) == 1) && (klass->instance_size == sizeof (MonoObject)) &&
9805 (strcmp (field->name, "$PRIVATE$") == 0)) {
9806 /* This field is a hack inserted by MCS to empty structures */
9807 continue;
9808 }
9809
9810 switch (layout) {
9811 case TYPE_ATTRIBUTE_AUTO_LAYOUT:
9812 case TYPE_ATTRIBUTE_SEQUENTIAL_LAYOUT:
9813 size = mono_marshal_type_size (field->type, info->fields [j].mspec,
9814 &align, TRUE, klass->unicode);
9815 align = klass->packing_size ? MIN (klass->packing_size, align): align;
9816 min_align = MAX (align, min_align);
9817 info->fields [j].offset = info->native_size;
9818 info->fields [j].offset += align - 1;
9819 info->fields [j].offset &= ~(align - 1);
9820 info->native_size = info->fields [j].offset + size;
9821 break;
9822 case TYPE_ATTRIBUTE_EXPLICIT_LAYOUT:
9823 size = mono_marshal_type_size (field->type, info->fields [j].mspec,
9824 &align, TRUE, klass->unicode);
9825 align = klass->packing_size ? MIN (klass->packing_size, align): align;
9826 min_align = MAX (align, min_align);
9827 info->fields [j].offset = field->offset - sizeof (MonoObject);
9828 info->native_size = MAX (info->native_size, info->fields [j].offset + size);
9829 break;
9830 }
9831 j++;
9832 }
9833
9834 if(layout != TYPE_ATTRIBUTE_AUTO_LAYOUT) {
9835 info->native_size = MAX (native_size, info->native_size);
9836 }
9837
9838 if (info->native_size & (min_align - 1)) {
9839 info->native_size += min_align - 1;
9840 info->native_size &= ~(min_align - 1);
9841 }
9842
9843 /* Update the class's blittable info, if the layouts don't match */
9844 if (info->native_size != mono_class_value_size (klass, NULL))
9845 klass->blittable = FALSE;
9846
9847 /* If this is an array type, ensure that we have element info */
9848 if (klass->element_class && !mono_marshal_is_loading_type_info (klass->element_class)) {
9849 mono_marshal_load_type_info (klass->element_class);
9850 }
9851
9852 loads_list = TlsGetValue (load_type_info_tls_id);
9853 loads_list = g_slist_remove (loads_list, klass);
9854 TlsSetValue (load_type_info_tls_id, loads_list);
9855
9856 klass->marshal_info = info;
9857
9858 mono_loader_unlock ();
9859
9860 return klass->marshal_info;
9861 }
9862
9863 /**
9864 * mono_class_native_size:
9865 * @klass: a class
9866 *
9867 * Returns: the native size of an object instance (when marshaled
9868 * to unmanaged code)
9869 */
9870 gint32
9871 mono_class_native_size (MonoClass *klass, guint32 *align)
9872 {
9873 if (!klass->marshal_info) {
9874 if (mono_marshal_is_loading_type_info (klass))
9875 return 0;
9876 else
9877 mono_marshal_load_type_info (klass);
9878 }
9879
9880 if (align)
9881 *align = klass->min_align;
9882
9883 return klass->marshal_info->native_size;
9884 }
9885
9886 /*
9887 * mono_type_native_stack_size:
9888 * @t: the type to return the size it uses on the stack
9889 *
9890 * Returns: the number of bytes required to hold an instance of this
9891 * type on the native stack
9892 */
9893 int
9894 mono_type_native_stack_size (MonoType *t, guint32 *align)
9895 {
9896 guint32 tmp;
9897
9898 g_assert (t != NULL);
9899
9900 if (!align)
9901 align = &tmp;
9902
9903 if (t->byref) {
9904 *align = 4;
9905 return 4;
9906 }
9907
9908 switch (t->type){
9909 case MONO_TYPE_BOOLEAN:
9910 case MONO_TYPE_CHAR:
9911 case MONO_TYPE_I1:
9912 case MONO_TYPE_U1:
9913 case MONO_TYPE_I2:
9914 case MONO_TYPE_U2:
9915 case MONO_TYPE_I4:
9916 case MONO_TYPE_U4:
9917 case MONO_TYPE_I:
9918 case MONO_TYPE_U:
9919 case MONO_TYPE_STRING:
9920 case MONO_TYPE_OBJECT:
9921 case MONO_TYPE_CLASS:
9922 case MONO_TYPE_SZARRAY:
9923 case MONO_TYPE_PTR:
9924 case MONO_TYPE_FNPTR:
9925 case MONO_TYPE_ARRAY:
9926 case MONO_TYPE_TYPEDBYREF:
9927 *align = 4;
9928 return 4;
9929 case MONO_TYPE_R4:
9930 *align = 4;
9931 return 4;
9932 case MONO_TYPE_I8:
9933 case MONO_TYPE_U8:
9934 case MONO_TYPE_R8:
9935 *align = 4;
9936 return 8;
9937 case MONO_TYPE_VALUETYPE: {
9938 guint32 size;
9939
9940 if (t->data.klass->enumtype)
9941 return mono_type_native_stack_size (t->data.klass->enum_basetype, align);
9942 else {
9943 size = mono_class_native_size (t->data.klass, align);
9944 *align = *align + 3;
9945 *align &= ~3;
9946
9947 size += 3;
9948 size &= ~3;
9949
9950 return size;
9951 }
9952 }
9953 default:
9954 g_error ("type 0x%02x unknown", t->type);
9955 }
9956 return 0;
9957 }
9958
9959 /* __alignof__ returns the preferred alignment of values not the actual alignment used by
9960 the compiler so is wrong e.g. for Linux where doubles are aligned on a 4 byte boundary
9961 but __alignof__ returns 8 - using G_STRUCT_OFFSET works better */
9962 #define ALIGNMENT(type) G_STRUCT_OFFSET(struct { char c; type x; }, x)
9963
9964 gint32
9965 mono_marshal_type_size (MonoType *type, MonoMarshalSpec *mspec, guint32 *align,
9966 gboolean as_field, gboolean unicode)
9967 {
9968 MonoMarshalNative native_type = mono_type_to_unmanaged (type, mspec, as_field, unicode, NULL);
9969 MonoClass *klass;
9970
9971 switch (native_type) {
9972 case MONO_NATIVE_BOOLEAN:
9973 *align = 4;
9974 return 4;
9975 case MONO_NATIVE_I1:
9976 case MONO_NATIVE_U1:
9977 *align = 1;
9978 return 1;
9979 case MONO_NATIVE_I2:
9980 case MONO_NATIVE_U2:
9981 case MONO_NATIVE_VARIANTBOOL:
9982 *align = 2;
9983 return 2;
9984 case MONO_NATIVE_I4:
9985 case MONO_NATIVE_U4:
9986 case MONO_NATIVE_ERROR:
9987 *align = 4;
9988 return 4;
9989 case MONO_NATIVE_I8:
9990 case MONO_NATIVE_U8:
9991 *align = ALIGNMENT(guint64);
9992 return 8;
9993 case MONO_NATIVE_R4:
9994 *align = 4;
9995 return 4;
9996 case MONO_NATIVE_R8:
9997 *align = ALIGNMENT(double);
9998 return 8;
9999 case MONO_NATIVE_INT:
10000 case MONO_NATIVE_UINT:
10001 case MONO_NATIVE_LPSTR:
10002 case MONO_NATIVE_LPWSTR:
10003 case MONO_NATIVE_LPTSTR:
10004 case MONO_NATIVE_BSTR:
10005 case MONO_NATIVE_ANSIBSTR:
10006 case MONO_NATIVE_TBSTR:
10007 case MONO_NATIVE_LPARRAY:
10008 case MONO_NATIVE_SAFEARRAY:
10009 case MONO_NATIVE_IUNKNOWN:
10010 case MONO_NATIVE_IDISPATCH:
10011 case MONO_NATIVE_INTERFACE:
10012 case MONO_NATIVE_ASANY:
10013 case MONO_NATIVE_FUNC:
10014 case MONO_NATIVE_LPSTRUCT:
10015 *align = ALIGNMENT(gpointer);
10016 return sizeof (gpointer);
10017 case MONO_NATIVE_STRUCT:
10018 klass = mono_class_from_mono_type (type);
10019 if (klass == mono_defaults.object_class &&
10020 (mspec && mspec->native == MONO_NATIVE_STRUCT)) {
10021 *align = 16;
10022 return 16;
10023 }
10024 return mono_class_native_size (klass, align);
10025 case MONO_NATIVE_BYVALTSTR: {
10026 int esize = unicode ? 2: 1;
10027 g_assert (mspec);
10028 *align = esize;
10029 return mspec->data.array_data.num_elem * esize;
10030 }
10031 case MONO_NATIVE_BYVALARRAY: {
10032 // FIXME: Have to consider ArraySubType
10033 int esize;
10034 klass = mono_class_from_mono_type (type);
10035 if (klass->element_class == mono_defaults.char_class) {
10036 esize = unicode ? 2 : 1;
10037 *align = esize;
10038 } else {
10039 esize = mono_class_native_size (klass->element_class, align);
10040 }
10041 g_assert (mspec);
10042 return mspec->data.array_data.num_elem * esize;
10043 }
10044 case MONO_NATIVE_CUSTOM:
10045 g_assert_not_reached ();
10046 break;
10047 case MONO_NATIVE_CURRENCY:
10048 case MONO_NATIVE_VBBYREFSTR:
10049 default:
10050 g_error ("native type %02x not implemented", native_type);
10051 break;
10052 }
10053 g_assert_not_reached ();
10054 return 0;
10055 }
10056
10057 gpointer
10058 mono_marshal_asany (MonoObject *o, MonoMarshalNative string_encoding, int param_attrs)
10059 {
10060 MonoType *t;
10061 MonoClass *klass;
10062
10063 if (o == NULL)
10064 return NULL;
10065
10066 t = &o->vtable->klass->byval_arg;
10067 switch (t->type) {
10068 case MONO_TYPE_I4:
10069 case MONO_TYPE_U4:
10070 case MONO_TYPE_PTR:
10071 case MONO_TYPE_I1:
10072 case MONO_TYPE_U1:
10073 case MONO_TYPE_BOOLEAN:
10074 case MONO_TYPE_I2:
10075 case MONO_TYPE_U2:
10076 case MONO_TYPE_CHAR:
10077 case MONO_TYPE_I8:
10078 case MONO_TYPE_U8:
10079 case MONO_TYPE_R4:
10080 case MONO_TYPE_R8:
10081 return mono_object_unbox (o);
10082 break;
10083 case MONO_TYPE_STRING:
10084 switch (string_encoding) {
10085 case MONO_NATIVE_LPWSTR:
10086 return mono_string_to_utf16 ((MonoString*)o);
10087 break;
10088 case MONO_NATIVE_LPSTR:
10089 return mono_string_to_lpstr ((MonoString*)o);
10090 break;
10091 default:
10092 g_warning ("marshaling conversion %d not implemented", string_encoding);
10093 g_assert_not_reached ();
10094 }
10095 break;
10096 case MONO_TYPE_CLASS:
10097 case MONO_TYPE_VALUETYPE: {
10098 MonoMethod *method;
10099 gpointer pa [3];
10100 gpointer res;
10101 MonoBoolean delete_old = FALSE;
10102
10103 klass = t->data.klass;
10104
10105 if ((klass->flags & TYPE_ATTRIBUTE_LAYOUT_MASK) == TYPE_ATTRIBUTE_AUTO_LAYOUT)
10106 break;
10107
10108 if (klass->valuetype && (((klass->flags & TYPE_ATTRIBUTE_LAYOUT_MASK) == TYPE_ATTRIBUTE_EXPLICIT_LAYOUT) ||
10109 klass->blittable || klass->enumtype))
10110 return mono_object_unbox (o);
10111
10112 res = mono_marshal_alloc (mono_class_native_size (klass, NULL));
10113
10114 if (!((param_attrs & PARAM_ATTRIBUTE_OUT) && !(param_attrs & PARAM_ATTRIBUTE_IN))) {
10115 method = mono_marshal_get_struct_to_ptr (o->vtable->klass);
10116
10117 pa [0] = o;
10118 pa [1] = &res;
10119 pa [2] = &delete_old;
10120
10121 mono_runtime_invoke (method, NULL, pa, NULL);
10122 }
10123
10124 return res;
10125 }
10126 }
10127
10128 mono_raise_exception (mono_get_exception_argument ("", "No PInvoke conversion exists for value passed to Object-typed parameter."));
10129
10130 return NULL;
10131 }
10132
10133 void
10134 mono_marshal_free_asany (MonoObject *o, gpointer ptr, MonoMarshalNative string_encoding, int param_attrs)
10135 {
10136 MonoType *t;
10137 MonoClass *klass;
10138
10139 if (o == NULL)
10140 return;
10141
10142 t = &o->vtable->klass->byval_arg;
10143 switch (t->type) {
10144 case MONO_TYPE_STRING:
10145 switch (string_encoding) {
10146 case MONO_NATIVE_LPWSTR:
10147 case MONO_NATIVE_LPSTR:
10148 mono_marshal_free (ptr);
10149 break;
10150 default:
10151 g_warning ("marshaling conversion %d not implemented", string_encoding);
10152 g_assert_not_reached ();
10153 }
10154 break;
10155 case MONO_TYPE_CLASS:
10156 case MONO_TYPE_VALUETYPE: {
10157 klass = t->data.klass;
10158
10159 if (klass->valuetype && (((klass->flags & TYPE_ATTRIBUTE_LAYOUT_MASK) == TYPE_ATTRIBUTE_EXPLICIT_LAYOUT) ||
10160 klass->blittable || klass->enumtype))
10161 break;
10162
10163 if (param_attrs & PARAM_ATTRIBUTE_OUT) {
10164 MonoMethod *method = mono_marshal_get_ptr_to_struct (o->vtable->klass);
10165 gpointer pa [2];
10166
10167 pa [0] = &ptr;
10168 pa [1] = o;
10169
10170 mono_runtime_invoke (method, NULL, pa, NULL);
10171 }
10172
10173 if (!((param_attrs & PARAM_ATTRIBUTE_OUT) && !(param_attrs & PARAM_ATTRIBUTE_IN))) {
10174 mono_struct_delete_old (klass, ptr);
10175 }
10176
10177 mono_marshal_free (ptr);
10178 break;
10179 }
10180 default:
10181 break;
10182 }
10183 }
10184
10185 MonoMethod *
10186 mono_marshal_get_generic_array_helper (MonoClass *class, MonoClass *iface, gchar *name, MonoMethod *method)
10187 {
10188 MonoMethodSignature *sig, *csig;
10189 MonoMethodBuilder *mb;
10190 MonoMethod *res;
10191 int i;
10192
10193 mb = mono_mb_new (class, name, MONO_WRAPPER_MANAGED_TO_MANAGED);
10194 mb->method->slot = -1;
10195
10196 mb->method->flags = METHOD_ATTRIBUTE_PRIVATE | METHOD_ATTRIBUTE_VIRTUAL |
10197 METHOD_ATTRIBUTE_NEW_SLOT | METHOD_ATTRIBUTE_HIDE_BY_SIG | METHOD_ATTRIBUTE_FINAL;
10198
10199 sig = mono_method_signature (method);
10200 csig = signature_dup (method->klass->image, sig);
10201 csig->generic_param_count = 0;
10202
10203 mono_mb_emit_ldarg (mb, 0);
10204 for (i = 0; i < csig->param_count; i++)
10205 mono_mb_emit_ldarg (mb, i + 1);
10206 mono_mb_emit_managed_call (mb, method, NULL);
10207 mono_mb_emit_byte (mb, CEE_RET);
10208
10209 res = mono_mb_create_method (mb, csig, csig->param_count + 16);
10210
10211 mono_mb_free (mb);
10212
10213 return res;
10214 }
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