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[linker] We need to mark nested types even if the declaring type isn't marked.
[mono-project.git] / mono / metadata / marshal.c
blobf5cfadbb8faf929ec49a9295ab0f955476660643
1 /*
2 * marshal.c: Routines for marshaling complex types in P/Invoke methods.
3 *
4 * Author:
5 * Paolo Molaro (lupus@ximian.com)
6 *
7 * Copyright 2002-2003 Ximian, Inc (http://www.ximian.com)
8 * Copyright 2004-2009 Novell, Inc (http://www.novell.com)
9 * Copyright 2011 Xamarin, Inc (http://www.xamarin.com)
10 *
11 * Licensed under the MIT license. See LICENSE file in the project root for full license information.
12 */
13
14 #include "config.h"
15 #ifdef HAVE_ALLOCA_H
16 #include <alloca.h>
17 #endif
18
19 #include "object.h"
20 #include "loader.h"
21 #include "cil-coff.h"
22 #include "metadata/marshal.h"
23 #include "metadata/method-builder.h"
24 #include "metadata/tabledefs.h"
25 #include "metadata/exception.h"
26 #include "metadata/appdomain.h"
27 #include "mono/metadata/abi-details.h"
28 #include "mono/metadata/debug-helpers.h"
29 #include "mono/metadata/threads.h"
30 #include "mono/metadata/monitor.h"
31 #include "mono/metadata/class-internals.h"
32 #include "mono/metadata/metadata-internals.h"
33 #include "mono/metadata/domain-internals.h"
34 #include "mono/metadata/gc-internals.h"
35 #include "mono/metadata/threads-types.h"
36 #include "mono/metadata/string-icalls.h"
37 #include "mono/metadata/attrdefs.h"
38 #include "mono/metadata/gc-internals.h"
39 #include "mono/metadata/cominterop.h"
40 #include "mono/metadata/remoting.h"
41 #include "mono/metadata/reflection-internals.h"
42 #include "mono/metadata/threadpool-ms.h"
43 #include "mono/metadata/handle.h"
44 #include "mono/utils/mono-counters.h"
45 #include "mono/utils/mono-tls.h"
46 #include "mono/utils/mono-memory-model.h"
47 #include "mono/utils/atomic.h"
48 #include <mono/utils/mono-threads.h>
49 #include <mono/utils/mono-threads-coop.h>
50 #include <mono/utils/mono-error-internals.h>
51
52 #include <string.h>
53 #include <errno.h>
54
55 #if defined(HOST_WIN32)
56 #include <objbase.h>
57 #endif
58
59 /* #define DEBUG_RUNTIME_CODE */
60
61 #define OPDEF(a,b,c,d,e,f,g,h,i,j) \
62 a = i,
63
64 enum {
65 #include "mono/cil/opcode.def"
66 LAST = 0xff
67 };
68 #undef OPDEF
69
70 /*
71 * This mutex protects the various marshalling related caches in MonoImage
72 * and a few other data structures static to this file.
73 *
74 * The marshal lock is a non-recursive complex lock that sits below the domain lock in the
75 * runtime locking latice. Which means it can take simple locks suck as the image lock.
76 */
77 #define mono_marshal_lock() mono_locks_os_acquire (&marshal_mutex, MarshalLock)
78 #define mono_marshal_unlock() mono_locks_os_release (&marshal_mutex, MarshalLock)
79 static mono_mutex_t marshal_mutex;
80 static gboolean marshal_mutex_initialized;
81
82 static MonoNativeTlsKey last_error_tls_id;
83
84 static MonoNativeTlsKey load_type_info_tls_id;
85
86 static gboolean use_aot_wrappers;
87
88 static void ftnptr_eh_callback_default (guint32 gchandle);
89
90 static MonoFtnPtrEHCallback ftnptr_eh_callback = ftnptr_eh_callback_default;
91
92 static void
93 delegate_hash_table_add (MonoDelegate *d);
94
95 static void
96 delegate_hash_table_remove (MonoDelegate *d);
97
98 static void
99 emit_struct_conv (MonoMethodBuilder *mb, MonoClass *klass, gboolean to_object);
100
101 static void
102 emit_struct_conv_full (MonoMethodBuilder *mb, MonoClass *klass, gboolean to_object, int offset_of_first_child_field, MonoMarshalNative string_encoding);
103
104 static void
105 mono_struct_delete_old (MonoClass *klass, char *ptr);
106
107 MONO_API void *
108 mono_marshal_string_to_utf16 (MonoString *s);
109
110 static void *
111 mono_marshal_string_to_utf16_copy (MonoString *s);
112
113 static gpointer
114 mono_string_to_lpstr (MonoString *string_obj);
115
116 static MonoStringBuilder *
117 mono_string_utf8_to_builder2 (char *text);
118
119 static MonoStringBuilder *
120 mono_string_utf16_to_builder2 (gunichar2 *text);
121
122 static MonoString*
123 mono_string_new_len_wrapper (const char *text, guint length);
124
125 static MonoString *
126 mono_string_from_byvalstr (const char *data, int len);
127
128 static MonoString *
129 mono_string_from_byvalwstr (gunichar2 *data, int len);
130
131 static void
132 mono_byvalarray_to_array (MonoArray *arr, gpointer native_arr, MonoClass *eltype, guint32 elnum);
133
134 static void
135 mono_byvalarray_to_byte_array (MonoArray *arr, gpointer native_arr, guint32 elnum);
136
137 static void
138 mono_array_to_byvalarray (gpointer native_arr, MonoArray *arr, MonoClass *eltype, guint32 elnum);
139
140 static void
141 mono_array_to_byte_byvalarray (gpointer native_arr, MonoArray *arr, guint32 elnum);
142
143 static MonoAsyncResult *
144 mono_delegate_begin_invoke (MonoDelegate *delegate, gpointer *params);
145
146 static MonoObject *
147 mono_delegate_end_invoke (MonoDelegate *delegate, gpointer *params);
148
149 static void
150 mono_marshal_set_last_error_windows (int error);
151
152 static MonoObject *
153 mono_marshal_isinst_with_cache (MonoObject *obj, MonoClass *klass, uintptr_t *cache);
154
155 static void init_safe_handle (void);
156
157 static void*
158 ves_icall_marshal_alloc (gulong size);
159
160 void
161 mono_string_utf8_to_builder (MonoStringBuilder *sb, char *text);
162
163 void
164 mono_string_utf16_to_builder (MonoStringBuilder *sb, gunichar2 *text);
165
166 gchar*
167 mono_string_builder_to_utf8 (MonoStringBuilder *sb);
168
169 gunichar2*
170 mono_string_builder_to_utf16 (MonoStringBuilder *sb);
171
172 void
173 mono_string_to_byvalstr (gpointer dst, MonoString *src, int size);
174
175 void
176 mono_string_to_byvalwstr (gpointer dst, MonoString *src, int size);
177
178 gpointer
179 mono_delegate_to_ftnptr (MonoDelegate *delegate);
180
181 MonoDelegate*
182 mono_ftnptr_to_delegate (MonoClass *klass, gpointer ftn);
183
184 gpointer
185 mono_array_to_savearray (MonoArray *array);
186
187 gpointer
188 mono_array_to_lparray (MonoArray *array);
189
190 void
191 mono_free_lparray (MonoArray *array, gpointer* nativeArray);
192
193 gpointer
194 mono_marshal_asany (MonoObject *obj, MonoMarshalNative string_encoding, int param_attrs);
195
196 void
197 mono_marshal_free_asany (MonoObject *o, gpointer ptr, MonoMarshalNative string_encoding, int param_attrs);
198
199 gpointer
200 mono_array_to_savearray (MonoArray *array);
201
202 gpointer
203 mono_array_to_lparray (MonoArray *array);
204
205 void
206 mono_free_lparray (MonoArray *array, gpointer* nativeArray);
207
208 static void
209 mono_marshal_ftnptr_eh_callback (guint32 gchandle);
210
211 static MonoThreadInfo*
212 mono_icall_start (HandleStackMark *stackmark, MonoError *error);
213
214 static void
215 mono_icall_end (MonoThreadInfo *info, HandleStackMark *stackmark, MonoError *error);
216
217 /* Lazy class loading functions */
218 static GENERATE_GET_CLASS_WITH_CACHE (string_builder, System.Text, StringBuilder)
219 static GENERATE_GET_CLASS_WITH_CACHE (date_time, System, DateTime)
220 static GENERATE_TRY_GET_CLASS_WITH_CACHE (unmanaged_function_pointer_attribute, System.Runtime.InteropServices, UnmanagedFunctionPointerAttribute)
221 static GENERATE_TRY_GET_CLASS_WITH_CACHE (icustom_marshaler, System.Runtime.InteropServices, ICustomMarshaler)
222
223 /* MonoMethod pointers to SafeHandle::DangerousAddRef and ::DangerousRelease */
224 static MonoMethod *sh_dangerous_add_ref;
225 static MonoMethod *sh_dangerous_release;
226
227 static void
228 init_safe_handle ()
229 {
230 sh_dangerous_add_ref = mono_class_get_method_from_name (
231 mono_class_try_get_safehandle_class (), "DangerousAddRef", 1);
232 sh_dangerous_release = mono_class_get_method_from_name (
233 mono_class_try_get_safehandle_class (), "DangerousRelease", 0);
234 }
235
236 static void
237 register_icall (gpointer func, const char *name, const char *sigstr, gboolean no_wrapper)
238 {
239 MonoMethodSignature *sig = mono_create_icall_signature (sigstr);
240
241 mono_register_jit_icall (func, name, sig, no_wrapper);
242 }
243
244 MonoMethodSignature*
245 mono_signature_no_pinvoke (MonoMethod *method)
246 {
247 MonoMethodSignature *sig = mono_method_signature (method);
248 if (sig->pinvoke) {
249 sig = mono_metadata_signature_dup_full (method->klass->image, sig);
250 sig->pinvoke = FALSE;
251 }
252
253 return sig;
254 }
255
256 void
257 mono_marshal_init_tls (void)
258 {
259 mono_native_tls_alloc (&last_error_tls_id, NULL);
260 mono_native_tls_alloc (&load_type_info_tls_id, NULL);
261 }
262
263 static MonoObject*
264 mono_object_isinst_icall (MonoObject *obj, MonoClass *klass)
265 {
266 MonoError error;
267 MonoObject *result = mono_object_isinst_checked (obj, klass, &error);
268 mono_error_set_pending_exception (&error);
269 return result;
270 }
271
272 static MonoString*
273 ves_icall_mono_string_from_utf16 (gunichar2 *data)
274 {
275 MonoError error;
276 MonoString *result = mono_string_from_utf16_checked (data, &error);
277 mono_error_set_pending_exception (&error);
278 return result;
279 }
280
281 static char*
282 ves_icall_mono_string_to_utf8 (MonoString *str)
283 {
284 MonoError error;
285 char *result = mono_string_to_utf8_checked (str, &error);
286 mono_error_set_pending_exception (&error);
287 return result;
288 }
289
290 void
291 mono_marshal_init (void)
292 {
293 static gboolean module_initialized = FALSE;
294
295 if (!module_initialized) {
296 module_initialized = TRUE;
297 mono_os_mutex_init_recursive (&marshal_mutex);
298 marshal_mutex_initialized = TRUE;
299
300 register_icall (ves_icall_System_Threading_Thread_ResetAbort, "ves_icall_System_Threading_Thread_ResetAbort", "void", TRUE);
301 register_icall (mono_marshal_string_to_utf16, "mono_marshal_string_to_utf16", "ptr obj", FALSE);
302 register_icall (mono_marshal_string_to_utf16_copy, "mono_marshal_string_to_utf16_copy", "ptr obj", FALSE);
303 register_icall (mono_string_to_utf16, "mono_string_to_utf16", "ptr obj", FALSE);
304 register_icall (ves_icall_mono_string_from_utf16, "ves_icall_mono_string_from_utf16", "obj ptr", FALSE);
305 register_icall (mono_string_from_byvalstr, "mono_string_from_byvalstr", "obj ptr int", FALSE);
306 register_icall (mono_string_from_byvalwstr, "mono_string_from_byvalwstr", "obj ptr int", FALSE);
307 register_icall (mono_string_new_wrapper, "mono_string_new_wrapper", "obj ptr", FALSE);
308 register_icall (mono_string_new_len_wrapper, "mono_string_new_len_wrapper", "obj ptr int", FALSE);
309 register_icall (ves_icall_mono_string_to_utf8, "ves_icall_mono_string_to_utf8", "ptr obj", FALSE);
310 register_icall (mono_string_to_lpstr, "mono_string_to_lpstr", "ptr obj", FALSE);
311 register_icall (mono_string_to_ansibstr, "mono_string_to_ansibstr", "ptr object", FALSE);
312 register_icall (mono_string_builder_to_utf8, "mono_string_builder_to_utf8", "ptr object", FALSE);
313 register_icall (mono_string_builder_to_utf16, "mono_string_builder_to_utf16", "ptr object", FALSE);
314 register_icall (mono_array_to_savearray, "mono_array_to_savearray", "ptr object", FALSE);
315 register_icall (mono_array_to_lparray, "mono_array_to_lparray", "ptr object", FALSE);
316 register_icall (mono_free_lparray, "mono_free_lparray", "void object ptr", FALSE);
317 register_icall (mono_byvalarray_to_array, "mono_byvalarray_to_array", "void object ptr ptr int32", FALSE);
318 register_icall (mono_byvalarray_to_byte_array, "mono_byvalarray_to_byte_array", "void object ptr int32", FALSE);
319 register_icall (mono_array_to_byvalarray, "mono_array_to_byvalarray", "void ptr object ptr int32", FALSE);
320 register_icall (mono_array_to_byte_byvalarray, "mono_array_to_byte_byvalarray", "void ptr object int32", FALSE);
321 register_icall (mono_delegate_to_ftnptr, "mono_delegate_to_ftnptr", "ptr object", FALSE);
322 register_icall (mono_ftnptr_to_delegate, "mono_ftnptr_to_delegate", "object ptr ptr", FALSE);
323 register_icall (mono_marshal_asany, "mono_marshal_asany", "ptr object int32 int32", FALSE);
324 register_icall (mono_marshal_free_asany, "mono_marshal_free_asany", "void object ptr int32 int32", FALSE);
325 register_icall (ves_icall_marshal_alloc, "ves_icall_marshal_alloc", "ptr int32", FALSE);
326 register_icall (mono_marshal_free, "mono_marshal_free", "void ptr", FALSE);
327 register_icall (mono_marshal_set_last_error, "mono_marshal_set_last_error", "void", FALSE);
328 register_icall (mono_marshal_set_last_error_windows, "mono_marshal_set_last_error_windows", "void int32", FALSE);
329 register_icall (mono_string_utf8_to_builder, "mono_string_utf8_to_builder", "void ptr ptr", FALSE);
330 register_icall (mono_string_utf8_to_builder2, "mono_string_utf8_to_builder2", "object ptr", FALSE);
331 register_icall (mono_string_utf16_to_builder, "mono_string_utf16_to_builder", "void ptr ptr", FALSE);
332 register_icall (mono_string_utf16_to_builder2, "mono_string_utf16_to_builder2", "object ptr", FALSE);
333 register_icall (mono_marshal_free_array, "mono_marshal_free_array", "void ptr int32", FALSE);
334 register_icall (mono_string_to_byvalstr, "mono_string_to_byvalstr", "void ptr ptr int32", FALSE);
335 register_icall (mono_string_to_byvalwstr, "mono_string_to_byvalwstr", "void ptr ptr int32", FALSE);
336 register_icall (g_free, "g_free", "void ptr", FALSE);
337 register_icall (mono_object_isinst_icall, "mono_object_isinst_icall", "object object ptr", FALSE);
338 register_icall (mono_struct_delete_old, "mono_struct_delete_old", "void ptr ptr", FALSE);
339 register_icall (mono_delegate_begin_invoke, "mono_delegate_begin_invoke", "object object ptr", FALSE);
340 register_icall (mono_delegate_end_invoke, "mono_delegate_end_invoke", "object object ptr", FALSE);
341 register_icall (mono_context_get, "mono_context_get", "object", FALSE);
342 register_icall (mono_context_set, "mono_context_set", "void object", FALSE);
343 register_icall (mono_gc_wbarrier_generic_nostore, "wb_generic", "void ptr", FALSE);
344 register_icall (mono_gchandle_get_target, "mono_gchandle_get_target", "object int32", TRUE);
345 register_icall (mono_gchandle_new, "mono_gchandle_new", "uint32 object bool", TRUE);
346 register_icall (mono_marshal_isinst_with_cache, "mono_marshal_isinst_with_cache", "object object ptr ptr", FALSE);
347 register_icall (mono_marshal_ftnptr_eh_callback, "mono_marshal_ftnptr_eh_callback", "void uint32", TRUE);
348 register_icall (mono_threads_enter_gc_safe_region_unbalanced, "mono_threads_enter_gc_safe_region_unbalanced", "ptr ptr", TRUE);
349 register_icall (mono_threads_exit_gc_safe_region_unbalanced, "mono_threads_exit_gc_safe_region_unbalanced", "void ptr ptr", TRUE);
350 register_icall (mono_threads_attach_coop, "mono_threads_attach_coop", "ptr ptr ptr", TRUE);
351 register_icall (mono_threads_detach_coop, "mono_threads_detach_coop", "void ptr ptr", TRUE);
352 register_icall (mono_icall_start, "mono_icall_start", "ptr ptr ptr", TRUE);
353 register_icall (mono_icall_end, "mono_icall_end", "void ptr ptr ptr", TRUE);
354 register_icall (mono_handle_new, "mono_handle_new", "ptr ptr", TRUE);
355
356 mono_cominterop_init ();
357 mono_remoting_init ();
358 }
359 }
360
361 void
362 mono_marshal_cleanup (void)
363 {
364 mono_cominterop_cleanup ();
365
366 mono_native_tls_free (load_type_info_tls_id);
367 mono_native_tls_free (last_error_tls_id);
368 mono_os_mutex_destroy (&marshal_mutex);
369 marshal_mutex_initialized = FALSE;
370 }
371
372 void
373 mono_marshal_lock_internal (void)
374 {
375 mono_marshal_lock ();
376 }
377
378 void
379 mono_marshal_unlock_internal (void)
380 {
381 mono_marshal_unlock ();
382 }
383
384 /* This is a JIT icall, it sets the pending exception and return NULL on error */
385 gpointer
386 mono_delegate_to_ftnptr (MonoDelegate *delegate)
387 {
388 MonoError error;
389 MonoMethod *method, *wrapper;
390 MonoClass *klass;
391 uint32_t target_handle = 0;
392
393 if (!delegate)
394 return NULL;
395
396 if (delegate->delegate_trampoline)
397 return delegate->delegate_trampoline;
398
399 klass = ((MonoObject *)delegate)->vtable->klass;
400 g_assert (klass->delegate);
401
402 method = delegate->method;
403 if (delegate->method_is_virtual)
404 method = mono_object_get_virtual_method (delegate->target, method);
405
406 if (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) {
407 const char *exc_class, *exc_arg;
408 gpointer ftnptr;
409
410 ftnptr = mono_lookup_pinvoke_call (method, &exc_class, &exc_arg);
411 if (!ftnptr) {
412 g_assert (exc_class);
413 mono_set_pending_exception (mono_exception_from_name_msg (mono_defaults.corlib, "System", exc_class, exc_arg));
414 return NULL;
415 }
416 return ftnptr;
417 }
418
419 if (delegate->target) {
420 /* Produce a location which can be embedded in JITted code */
421 target_handle = mono_gchandle_new_weakref (delegate->target, FALSE);
422 }
423
424 wrapper = mono_marshal_get_managed_wrapper (method, klass, target_handle);
425
426 delegate->delegate_trampoline = mono_compile_method_checked (wrapper, &error);
427 if (!is_ok (&error))
428 goto fail;
429
430 // Add the delegate to the delegate hash table
431 delegate_hash_table_add (delegate);
432
433 /* when the object is collected, collect the dynamic method, too */
434 mono_object_register_finalizer ((MonoObject*)delegate);
435
436 return delegate->delegate_trampoline;
437
438 fail:
439 if (target_handle != 0)
440 mono_gchandle_free (target_handle);
441 mono_error_set_pending_exception (&error);
442 return NULL;
443 }
444
445 /*
446 * this hash table maps from a delegate trampoline object to a weak reference
447 * of the delegate. As an optimizations with a non-moving GC we store the
448 * object pointer itself, otherwise we use a GC handle.
449 */
450 static GHashTable *delegate_hash_table;
451
452 static GHashTable *
453 delegate_hash_table_new (void) {
454 return g_hash_table_new (NULL, NULL);
455 }
456
457 static void
458 delegate_hash_table_remove (MonoDelegate *d)
459 {
460 guint32 gchandle = 0;
461
462 mono_marshal_lock ();
463 if (delegate_hash_table == NULL)
464 delegate_hash_table = delegate_hash_table_new ();
465 if (mono_gc_is_moving ())
466 gchandle = GPOINTER_TO_UINT (g_hash_table_lookup (delegate_hash_table, d->delegate_trampoline));
467 g_hash_table_remove (delegate_hash_table, d->delegate_trampoline);
468 mono_marshal_unlock ();
469 if (gchandle && mono_gc_is_moving ())
470 mono_gchandle_free (gchandle);
471 }
472
473 static void
474 delegate_hash_table_add (MonoDelegate *d)
475 {
476 guint32 gchandle;
477 guint32 old_gchandle;
478
479 mono_marshal_lock ();
480 if (delegate_hash_table == NULL)
481 delegate_hash_table = delegate_hash_table_new ();
482 if (mono_gc_is_moving ()) {
483 gchandle = mono_gchandle_new_weakref ((MonoObject*)d, FALSE);
484 old_gchandle = GPOINTER_TO_UINT (g_hash_table_lookup (delegate_hash_table, d->delegate_trampoline));
485 g_hash_table_insert (delegate_hash_table, d->delegate_trampoline, GUINT_TO_POINTER (gchandle));
486 if (old_gchandle)
487 mono_gchandle_free (old_gchandle);
488 } else {
489 g_hash_table_insert (delegate_hash_table, d->delegate_trampoline, d);
490 }
491 mono_marshal_unlock ();
492 }
493
494 /*
495 * mono_marshal_use_aot_wrappers:
496 *
497 * Instructs this module to use AOT compatible wrappers.
498 */
499 void
500 mono_marshal_use_aot_wrappers (gboolean use)
501 {
502 use_aot_wrappers = use;
503 }
504
505 static void
506 parse_unmanaged_function_pointer_attr (MonoClass *klass, MonoMethodPInvoke *piinfo)
507 {
508 MonoError error;
509 MonoCustomAttrInfo *cinfo;
510 MonoReflectionUnmanagedFunctionPointerAttribute *attr;
511
512 /* The attribute is only available in Net 2.0 */
513 if (mono_class_try_get_unmanaged_function_pointer_attribute_class ()) {
514 /*
515 * The pinvoke attributes are stored in a real custom attribute so we have to
516 * construct it.
517 */
518 cinfo = mono_custom_attrs_from_class_checked (klass, &error);
519 if (!mono_error_ok (&error)) {
520 g_warning ("Could not load UnmanagedFunctionPointerAttribute due to %s", mono_error_get_message (&error));
521 mono_error_cleanup (&error);
522 }
523 if (cinfo && !mono_runtime_get_no_exec ()) {
524 attr = (MonoReflectionUnmanagedFunctionPointerAttribute*)mono_custom_attrs_get_attr_checked (cinfo, mono_class_try_get_unmanaged_function_pointer_attribute_class (), &error);
525 if (attr) {
526 piinfo->piflags = (attr->call_conv << 8) | (attr->charset ? (attr->charset - 1) * 2 : 1) | attr->set_last_error;
527 } else {
528 if (!mono_error_ok (&error)) {
529 g_warning ("Could not load UnmanagedFunctionPointerAttribute due to %s", mono_error_get_message (&error));
530 mono_error_cleanup (&error);
531 }
532 }
533 if (!cinfo->cached)
534 mono_custom_attrs_free (cinfo);
535 }
536 }
537 }
538
539 /* This is a JIT icall, it sets the pending exception and returns NULL on error */
540 MonoDelegate*
541 mono_ftnptr_to_delegate (MonoClass *klass, gpointer ftn)
542 {
543 MonoError error;
544 guint32 gchandle;
545 MonoDelegate *d;
546
547 if (ftn == NULL)
548 return NULL;
549
550 mono_marshal_lock ();
551 if (delegate_hash_table == NULL)
552 delegate_hash_table = delegate_hash_table_new ();
553
554 if (mono_gc_is_moving ()) {
555 gchandle = GPOINTER_TO_UINT (g_hash_table_lookup (delegate_hash_table, ftn));
556 mono_marshal_unlock ();
557 if (gchandle)
558 d = (MonoDelegate*)mono_gchandle_get_target (gchandle);
559 else
560 d = NULL;
561 } else {
562 d = (MonoDelegate *)g_hash_table_lookup (delegate_hash_table, ftn);
563 mono_marshal_unlock ();
564 }
565 if (d == NULL) {
566 /* This is a native function, so construct a delegate for it */
567 MonoMethodSignature *sig;
568 MonoMethod *wrapper;
569 MonoMarshalSpec **mspecs;
570 MonoMethod *invoke = mono_get_delegate_invoke (klass);
571 MonoMethodPInvoke piinfo;
572 MonoObject *this_obj;
573 int i;
574
575 if (use_aot_wrappers) {
576 wrapper = mono_marshal_get_native_func_wrapper_aot (klass);
577 this_obj = mono_value_box_checked (mono_domain_get (), mono_defaults.int_class, &ftn, &error);
578 if (!is_ok (&error)) {
579 mono_error_set_pending_exception (&error);
580 return NULL;
581 }
582 } else {
583 memset (&piinfo, 0, sizeof (piinfo));
584 parse_unmanaged_function_pointer_attr (klass, &piinfo);
585
586 mspecs = g_new0 (MonoMarshalSpec*, mono_method_signature (invoke)->param_count + 1);
587 mono_method_get_marshal_info (invoke, mspecs);
588 /* Freed below so don't alloc from mempool */
589 sig = mono_metadata_signature_dup (mono_method_signature (invoke));
590 sig->hasthis = 0;
591
592 wrapper = mono_marshal_get_native_func_wrapper (klass->image, sig, &piinfo, mspecs, ftn);
593 this_obj = NULL;
594
595 for (i = mono_method_signature (invoke)->param_count; i >= 0; i--)
596 if (mspecs [i])
597 mono_metadata_free_marshal_spec (mspecs [i]);
598 g_free (mspecs);
599 g_free (sig);
600 }
601
602 d = (MonoDelegate*)mono_object_new_checked (mono_domain_get (), klass, &error);
603 if (!mono_error_ok (&error)) {
604 mono_error_set_pending_exception (&error);
605 return NULL;
606 }
607 gpointer compiled_ptr = mono_compile_method_checked (wrapper, &error);
608 if (mono_error_set_pending_exception (&error))
609 return NULL;
610 mono_delegate_ctor_with_method ((MonoObject*)d, this_obj, compiled_ptr, wrapper, &error);
611 if (mono_error_set_pending_exception (&error))
612 return NULL;
613 }
614
615 if (d->object.vtable->domain != mono_domain_get ()) {
616 mono_set_pending_exception (mono_get_exception_not_supported ("Delegates cannot be marshalled from native code into a domain other than their home domain"));
617 return NULL;
618 }
619
620 return d;
621 }
622
623 void
624 mono_delegate_free_ftnptr (MonoDelegate *delegate)
625 {
626 MonoJitInfo *ji;
627 void *ptr;
628
629 delegate_hash_table_remove (delegate);
630
631 ptr = (gpointer)InterlockedExchangePointer (&delegate->delegate_trampoline, NULL);
632
633 if (!delegate->target) {
634 /* The wrapper method is shared between delegates -> no need to free it */
635 return;
636 }
637
638 if (ptr) {
639 uint32_t gchandle;
640 void **method_data;
641 MonoMethod *method;
642
643 ji = mono_jit_info_table_find (mono_domain_get (), (char *)mono_get_addr_from_ftnptr (ptr));
644 g_assert (ji);
645
646 method = mono_jit_info_get_method (ji);
647 method_data = (void **)((MonoMethodWrapper*)method)->method_data;
648
649 /*the target gchandle is the first entry after size and the wrapper itself.*/
650 gchandle = GPOINTER_TO_UINT (method_data [2]);
651
652 if (gchandle)
653 mono_gchandle_free (gchandle);
654
655 mono_runtime_free_method (mono_object_domain (delegate), method);
656 }
657 }
658
659 /* This is a JIT icall, it sets the pending exception and returns NULL on error */
660 static MonoString *
661 mono_string_from_byvalstr (const char *data, int max_len)
662 {
663 MonoError error;
664 MonoDomain *domain = mono_domain_get ();
665 int len = 0;
666
667 if (!data)
668 return NULL;
669
670 while (len < max_len - 1 && data [len])
671 len++;
672
673 MonoString *result = mono_string_new_len_checked (domain, data, len, &error);
674 mono_error_set_pending_exception (&error);
675 return result;
676 }
677
678 /* This is a JIT icall, it sets the pending exception and return NULL on error */
679 static MonoString *
680 mono_string_from_byvalwstr (gunichar2 *data, int max_len)
681 {
682 MonoError error;
683 MonoString *res = NULL;
684 MonoDomain *domain = mono_domain_get ();
685 int len = 0;
686
687 if (!data)
688 return NULL;
689
690 while (data [len]) len++;
691
692 res = mono_string_new_utf16_checked (domain, data, MIN (len, max_len), &error);
693 if (!mono_error_ok (&error)) {
694 mono_error_set_pending_exception (&error);
695 return NULL;
696 }
697 return res;
698 }
699
700 gpointer
701 mono_array_to_savearray (MonoArray *array)
702 {
703 if (!array)
704 return NULL;
705
706 g_assert_not_reached ();
707 return NULL;
708 }
709
710 gpointer
711 mono_array_to_lparray (MonoArray *array)
712 {
713 #ifndef DISABLE_COM
714 gpointer *nativeArray = NULL;
715 int nativeArraySize = 0;
716
717 int i = 0;
718 MonoClass *klass;
719 #endif
720
721 if (!array)
722 return NULL;
723 #ifndef DISABLE_COM
724
725 klass = array->obj.vtable->klass;
726
727 switch (klass->element_class->byval_arg.type) {
728 case MONO_TYPE_VOID:
729 g_assert_not_reached ();
730 break;
731 case MONO_TYPE_CLASS:
732 nativeArraySize = array->max_length;
733 nativeArray = (void **)malloc(sizeof(gpointer) * nativeArraySize);
734 for(i = 0; i < nativeArraySize; ++i)
735 nativeArray[i] = ves_icall_System_Runtime_InteropServices_Marshal_GetIUnknownForObjectInternal(((MonoObject **)array->vector)[i]);
736 return nativeArray;
737 case MONO_TYPE_U1:
738 case MONO_TYPE_BOOLEAN:
739 case MONO_TYPE_I1:
740 case MONO_TYPE_U2:
741 case MONO_TYPE_CHAR:
742 case MONO_TYPE_I2:
743 case MONO_TYPE_I:
744 case MONO_TYPE_U:
745 case MONO_TYPE_I4:
746 case MONO_TYPE_U4:
747 case MONO_TYPE_U8:
748 case MONO_TYPE_I8:
749 case MONO_TYPE_R4:
750 case MONO_TYPE_R8:
751 case MONO_TYPE_VALUETYPE:
752 case MONO_TYPE_PTR:
753 /* nothing to do */
754 break;
755 case MONO_TYPE_GENERICINST:
756 case MONO_TYPE_OBJECT:
757 case MONO_TYPE_ARRAY:
758 case MONO_TYPE_SZARRAY:
759 case MONO_TYPE_STRING:
760 default:
761 g_warning ("type 0x%x not handled", klass->element_class->byval_arg.type);
762 g_assert_not_reached ();
763 }
764 #endif
765 return array->vector;
766 }
767
768 void
769 mono_free_lparray (MonoArray *array, gpointer* nativeArray)
770 {
771 #ifndef DISABLE_COM
772 MonoClass *klass;
773 int i = 0;
774
775 if (!array)
776 return;
777
778 if (!nativeArray)
779 return;
780 klass = array->obj.vtable->klass;
781
782 if (klass->element_class->byval_arg.type == MONO_TYPE_CLASS) {
783 for(i = 0; i < array->max_length; ++i)
784 mono_marshal_free_ccw (mono_array_get (array, MonoObject*, i));
785 g_free (nativeArray);
786 }
787 #endif
788 }
789
790 static void
791 mono_byvalarray_to_array (MonoArray *arr, gpointer native_arr, MonoClass *elclass, guint32 elnum)
792 {
793 g_assert (arr->obj.vtable->klass->element_class == mono_defaults.char_class);
794
795 if (elclass == mono_defaults.byte_class) {
796 GError *error = NULL;
797 guint16 *ut;
798 glong items_written;
799
800 ut = g_utf8_to_utf16 ((const gchar *)native_arr, elnum, NULL, &items_written, &error);
801
802 if (!error) {
803 memcpy (mono_array_addr (arr, guint16, 0), ut, items_written * sizeof (guint16));
804 g_free (ut);
805 }
806 else
807 g_error_free (error);
808 }
809 else
810 g_assert_not_reached ();
811 }
812
813 static void
814 mono_byvalarray_to_byte_array (MonoArray *arr, gpointer native_arr, guint32 elnum)
815 {
816 mono_byvalarray_to_array (arr, native_arr, mono_defaults.byte_class, elnum);
817 }
818
819 /* This is a JIT icall, it sets the pending exception and returns on error */
820 static void
821 mono_array_to_byvalarray (gpointer native_arr, MonoArray *arr, MonoClass *elclass, guint32 elnum)
822 {
823 g_assert (arr->obj.vtable->klass->element_class == mono_defaults.char_class);
824
825 if (elclass == mono_defaults.byte_class) {
826 char *as;
827 GError *error = NULL;
828
829 as = g_utf16_to_utf8 (mono_array_addr (arr, gunichar2, 0), mono_array_length (arr), NULL, NULL, &error);
830 if (error) {
831 mono_set_pending_exception (mono_get_exception_argument ("string", error->message));
832 g_error_free (error);
833 return;
834 }
835
836 memcpy (native_arr, as, MIN (strlen (as), elnum));
837 g_free (as);
838 } else {
839 g_assert_not_reached ();
840 }
841 }
842
843 static void
844 mono_array_to_byte_byvalarray (gpointer native_arr, MonoArray *arr, guint32 elnum)
845 {
846 mono_array_to_byvalarray (native_arr, arr, mono_defaults.byte_class, elnum);
847 }
848
849 static MonoStringBuilder *
850 mono_string_builder_new (int starting_string_length)
851 {
852 static MonoClass *string_builder_class;
853 static MonoMethod *sb_ctor;
854 static void *args [1];
855
856 MonoError error;
857 int initial_len = starting_string_length;
858
859 if (initial_len < 0)
860 initial_len = 0;
861
862 if (!sb_ctor) {
863 MonoMethodDesc *desc;
864 MonoMethod *m;
865
866 string_builder_class = mono_class_get_string_builder_class ();
867 g_assert (string_builder_class);
868 desc = mono_method_desc_new (":.ctor(int)", FALSE);
869 m = mono_method_desc_search_in_class (desc, string_builder_class);
870 g_assert (m);
871 mono_method_desc_free (desc);
872 mono_memory_barrier ();
873 sb_ctor = m;
874 }
875
876 // We make a new array in the _to_builder function, so this
877 // array will always be garbage collected.
878 args [0] = &initial_len;
879
880 MonoStringBuilder *sb = (MonoStringBuilder*)mono_object_new_checked (mono_domain_get (), string_builder_class, &error);
881 mono_error_assert_ok (&error);
882
883 MonoObject *exc;
884 mono_runtime_try_invoke (sb_ctor, sb, args, &exc, &error);
885 g_assert (exc == NULL);
886 mono_error_assert_ok (&error);
887
888 g_assert (sb->chunkChars->max_length >= initial_len);
889
890 return sb;
891 }
892
893 static void
894 mono_string_utf16_to_builder_copy (MonoStringBuilder *sb, gunichar2 *text, size_t string_len)
895 {
896 gunichar2 *charDst = (gunichar2 *)sb->chunkChars->vector;
897 gunichar2 *charSrc = (gunichar2 *)text;
898 memcpy (charDst, charSrc, sizeof (gunichar2) * string_len);
899
900 sb->chunkLength = string_len;
901
902 return;
903 }
904
905 MonoStringBuilder *
906 mono_string_utf16_to_builder2 (gunichar2 *text)
907 {
908 if (!text)
909 return NULL;
910
911 int len;
912 for (len = 0; text [len] != 0; ++len);
913
914 MonoStringBuilder *sb = mono_string_builder_new (len);
915 mono_string_utf16_to_builder (sb, text);
916
917 return sb;
918 }
919
920 void
921 mono_string_utf8_to_builder (MonoStringBuilder *sb, char *text)
922 {
923 if (!sb || !text)
924 return;
925
926 int len = strlen (text);
927 if (len > mono_string_builder_capacity (sb))
928 len = mono_string_builder_capacity (sb);
929
930 GError *error = NULL;
931 glong copied;
932 gunichar2* ut = g_utf8_to_utf16 (text, len, NULL, &copied, &error);
933
934 if (!error) {
935 MONO_OBJECT_SETREF (sb, chunkPrevious, NULL);
936 mono_string_utf16_to_builder_copy (sb, ut, copied);
937 } else
938 g_error_free (error);
939
940 g_free (ut);
941 }
942
943 MonoStringBuilder *
944 mono_string_utf8_to_builder2 (char *text)
945 {
946 if (!text)
947 return NULL;
948
949 int len = strlen (text);
950 MonoStringBuilder *sb = mono_string_builder_new (len);
951 mono_string_utf8_to_builder (sb, text);
952
953 return sb;
954 }
955
956
957 void
958 mono_string_utf16_to_builder (MonoStringBuilder *sb, gunichar2 *text)
959 {
960 if (!sb || !text)
961 return;
962
963 guint32 len;
964 for (len = 0; text [len] != 0; ++len);
965
966 if (len > mono_string_builder_capacity (sb))
967 len = mono_string_builder_capacity (sb);
968
969 mono_string_utf16_to_builder_copy (sb, text, len);
970 }
971
972 /**
973 * mono_string_builder_to_utf8:
974 * @sb: the string builder
975 *
976 * Converts to utf8 the contents of the MonoStringBuilder.
977 *
978 * Returns: a utf8 string with the contents of the StringBuilder.
979 *
980 * The return value must be released with mono_marshal_free.
981 *
982 * This is a JIT icall, it sets the pending exception and returns NULL on error.
983 */
984 gchar*
985 mono_string_builder_to_utf8 (MonoStringBuilder *sb)
986 {
987 MonoError error;
988 GError *gerror = NULL;
989
990 if (!sb)
991 return NULL;
992
993 gunichar2 *str_utf16 = mono_string_builder_to_utf16 (sb);
994
995 guint str_len = mono_string_builder_string_length (sb);
996
997 gchar *tmp = g_utf16_to_utf8 (str_utf16, str_len, NULL, NULL, &gerror);
998
999 if (gerror) {
1000 g_error_free (gerror);
1001 mono_marshal_free (str_utf16);
1002 mono_set_pending_exception (mono_get_exception_execution_engine ("Failed to convert StringBuilder from utf16 to utf8"));
1003 return NULL;
1004 } else {
1005 guint len = mono_string_builder_capacity (sb) + 1;
1006 gchar *res = (gchar *)mono_marshal_alloc (len * sizeof (gchar), &error);
1007 if (!mono_error_ok (&error)) {
1008 mono_marshal_free (str_utf16);
1009 g_free (tmp);
1010 mono_error_set_pending_exception (&error);
1011 return NULL;
1012 }
1013
1014 g_assert (str_len < len);
1015 memcpy (res, tmp, str_len * sizeof (gchar));
1016 res[str_len] = '\0';
1017
1018 mono_marshal_free (str_utf16);
1019 g_free (tmp);
1020 return res;
1021 }
1022 }
1023
1024 /**
1025 * mono_string_builder_to_utf16:
1026 * @sb: the string builder
1027 *
1028 * Converts to utf16 the contents of the MonoStringBuilder.
1029 *
1030 * Returns: a utf16 string with the contents of the StringBuilder.
1031 *
1032 * The return value must be released with mono_marshal_free.
1033 *
1034 * This is a JIT icall, it sets the pending exception and returns NULL on error.
1035 */
1036 gunichar2*
1037 mono_string_builder_to_utf16 (MonoStringBuilder *sb)
1038 {
1039 MonoError error;
1040
1041 if (!sb)
1042 return NULL;
1043
1044 g_assert (sb->chunkChars);
1045
1046 guint len = mono_string_builder_capacity (sb);
1047
1048 if (len == 0)
1049 len = 1;
1050
1051 gunichar2 *str = (gunichar2 *)mono_marshal_alloc ((len + 1) * sizeof (gunichar2), &error);
1052 if (!mono_error_ok (&error)) {
1053 mono_error_set_pending_exception (&error);
1054 return NULL;
1055 }
1056
1057 str[len] = '\0';
1058
1059 if (len == 0)
1060 return str;
1061
1062 MonoStringBuilder* chunk = sb;
1063 do {
1064 if (chunk->chunkLength > 0) {
1065 // Check that we will not overrun our boundaries.
1066 gunichar2 *source = (gunichar2 *)chunk->chunkChars->vector;
1067
1068 if (chunk->chunkLength <= len) {
1069 memcpy (str + chunk->chunkOffset, source, chunk->chunkLength * sizeof(gunichar2));
1070 } else {
1071 g_error ("A chunk in the StringBuilder had a length longer than expected from the offset.");
1072 }
1073
1074 len -= chunk->chunkLength;
1075 }
1076 chunk = chunk->chunkPrevious;
1077 } while (chunk != NULL);
1078
1079 return str;
1080 }
1081
1082 /* This is a JIT icall, it sets the pending exception and returns NULL on error. */
1083 static gpointer
1084 mono_string_to_lpstr (MonoString *s)
1085 {
1086 #ifdef TARGET_WIN32
1087 char *as, *tmp;
1088 glong len;
1089 GError *error = NULL;
1090
1091 if (s == NULL)
1092 return NULL;
1093
1094 if (!s->length) {
1095 as = CoTaskMemAlloc (1);
1096 as [0] = '\0';
1097 return as;
1098 }
1099
1100 tmp = g_utf16_to_utf8 (mono_string_chars (s), s->length, NULL, &len, &error);
1101 if (error) {
1102 MonoException *exc = mono_get_exception_argument ("string", error->message);
1103 g_error_free (error);
1104 mono_set_pending_exception (exc);
1105 return NULL;
1106 } else {
1107 as = CoTaskMemAlloc (len + 1);
1108 memcpy (as, tmp, len + 1);
1109 g_free (tmp);
1110 return as;
1111 }
1112 #else
1113 MonoError error;
1114 char *result = mono_string_to_utf8_checked (s, &error);
1115 mono_error_set_pending_exception (&error);
1116 return result;
1117 #endif
1118 }
1119
1120 gpointer
1121 mono_string_to_ansibstr (MonoString *string_obj)
1122 {
1123 g_error ("UnmanagedMarshal.BStr is not implemented.");
1124 return NULL;
1125 }
1126
1127 /**
1128 * mono_string_to_byvalstr:
1129 * @dst: Where to store the null-terminated utf8 decoded string.
1130 * @src: the MonoString to copy.
1131 * @size: the maximum number of bytes to copy.
1132 *
1133 * Copies the MonoString pointed to by @src as a utf8 string
1134 * into @dst, it copies at most @size bytes into the destination.
1135 */
1136 void
1137 mono_string_to_byvalstr (gpointer dst, MonoString *src, int size)
1138 {
1139 MonoError error;
1140 char *s;
1141 int len;
1142
1143 g_assert (dst != NULL);
1144 g_assert (size > 0);
1145
1146 memset (dst, 0, size);
1147 if (!src)
1148 return;
1149
1150 s = mono_string_to_utf8_checked (src, &error);
1151 if (mono_error_set_pending_exception (&error))
1152 return;
1153 len = MIN (size, strlen (s));
1154 if (len >= size)
1155 len--;
1156 memcpy (dst, s, len);
1157 g_free (s);
1158 }
1159
1160 /**
1161 * mono_string_to_byvalwstr:
1162 * @dst: Where to store the null-terminated utf16 decoded string.
1163 * @src: the MonoString to copy.
1164 * @size: the maximum number of bytes to copy.
1165 *
1166 * Copies the MonoString pointed to by @src as a utf16 string into
1167 * @dst, it copies at most @size bytes into the destination (including
1168 * a terminating 16-bit zero terminator).
1169 */
1170 void
1171 mono_string_to_byvalwstr (gpointer dst, MonoString *src, int size)
1172 {
1173 int len;
1174
1175 g_assert (dst != NULL);
1176 g_assert (size > 1);
1177
1178 if (!src) {
1179 memset (dst, 0, size * 2);
1180 return;
1181 }
1182
1183 len = MIN (size, (mono_string_length (src)));
1184 memcpy (dst, mono_string_chars (src), size * 2);
1185 if (size <= mono_string_length (src))
1186 len--;
1187 *((gunichar2 *) dst + len) = 0;
1188 }
1189
1190 /* this is an icall, it sets the pending exception and returns NULL on error */
1191 static MonoString*
1192 mono_string_new_len_wrapper (const char *text, guint length)
1193 {
1194 MonoError error;
1195 MonoString *result = mono_string_new_len_checked (mono_domain_get (), text, length, &error);
1196 mono_error_set_pending_exception (&error);
1197 return result;
1198 }
1199
1200 #ifndef DISABLE_JIT
1201
1202 /*
1203 * mono_mb_emit_exception_marshal_directive:
1204 *
1205 * This function assumes ownership of MSG, which should be malloc-ed.
1206 */
1207 static void
1208 mono_mb_emit_exception_marshal_directive (MonoMethodBuilder *mb, char *msg)
1209 {
1210 char *s;
1211
1212 if (!mb->dynamic) {
1213 s = mono_image_strdup (mb->method->klass->image, msg);
1214 g_free (msg);
1215 } else {
1216 s = g_strdup (msg);
1217 }
1218 mono_mb_emit_exception_full (mb, "System.Runtime.InteropServices", "MarshalDirectiveException", s);
1219 }
1220
1221 #endif /* !DISABLE_JIT */
1222
1223 guint
1224 mono_type_to_ldind (MonoType *type)
1225 {
1226 if (type->byref)
1227 return CEE_LDIND_I;
1228
1229 handle_enum:
1230 switch (type->type) {
1231 case MONO_TYPE_I1:
1232 return CEE_LDIND_I1;
1233 case MONO_TYPE_U1:
1234 case MONO_TYPE_BOOLEAN:
1235 return CEE_LDIND_U1;
1236 case MONO_TYPE_I2:
1237 return CEE_LDIND_I2;
1238 case MONO_TYPE_U2:
1239 case MONO_TYPE_CHAR:
1240 return CEE_LDIND_U2;
1241 case MONO_TYPE_I4:
1242 return CEE_LDIND_I4;
1243 case MONO_TYPE_U4:
1244 return CEE_LDIND_U4;
1245 case MONO_TYPE_I:
1246 case MONO_TYPE_U:
1247 case MONO_TYPE_PTR:
1248 case MONO_TYPE_FNPTR:
1249 return CEE_LDIND_I;
1250 case MONO_TYPE_CLASS:
1251 case MONO_TYPE_STRING:
1252 case MONO_TYPE_OBJECT:
1253 case MONO_TYPE_SZARRAY:
1254 case MONO_TYPE_ARRAY:
1255 return CEE_LDIND_REF;
1256 case MONO_TYPE_I8:
1257 case MONO_TYPE_U8:
1258 return CEE_LDIND_I8;
1259 case MONO_TYPE_R4:
1260 return CEE_LDIND_R4;
1261 case MONO_TYPE_R8:
1262 return CEE_LDIND_R8;
1263 case MONO_TYPE_VALUETYPE:
1264 if (type->data.klass->enumtype) {
1265 type = mono_class_enum_basetype (type->data.klass);
1266 goto handle_enum;
1267 }
1268 return CEE_LDOBJ;
1269 case MONO_TYPE_TYPEDBYREF:
1270 return CEE_LDOBJ;
1271 case MONO_TYPE_GENERICINST:
1272 type = &type->data.generic_class->container_class->byval_arg;
1273 goto handle_enum;
1274 default:
1275 g_error ("unknown type 0x%02x in type_to_ldind", type->type);
1276 }
1277 return -1;
1278 }
1279
1280 guint
1281 mono_type_to_stind (MonoType *type)
1282 {
1283 if (type->byref)
1284 return MONO_TYPE_IS_REFERENCE (type) ? CEE_STIND_REF : CEE_STIND_I;
1285
1286
1287 handle_enum:
1288 switch (type->type) {
1289 case MONO_TYPE_I1:
1290 case MONO_TYPE_U1:
1291 case MONO_TYPE_BOOLEAN:
1292 return CEE_STIND_I1;
1293 case MONO_TYPE_I2:
1294 case MONO_TYPE_U2:
1295 case MONO_TYPE_CHAR:
1296 return CEE_STIND_I2;
1297 case MONO_TYPE_I4:
1298 case MONO_TYPE_U4:
1299 return CEE_STIND_I4;
1300 case MONO_TYPE_I:
1301 case MONO_TYPE_U:
1302 case MONO_TYPE_PTR:
1303 case MONO_TYPE_FNPTR:
1304 return CEE_STIND_I;
1305 case MONO_TYPE_CLASS:
1306 case MONO_TYPE_STRING:
1307 case MONO_TYPE_OBJECT:
1308 case MONO_TYPE_SZARRAY:
1309 case MONO_TYPE_ARRAY:
1310 return CEE_STIND_REF;
1311 case MONO_TYPE_I8:
1312 case MONO_TYPE_U8:
1313 return CEE_STIND_I8;
1314 case MONO_TYPE_R4:
1315 return CEE_STIND_R4;
1316 case MONO_TYPE_R8:
1317 return CEE_STIND_R8;
1318 case MONO_TYPE_VALUETYPE:
1319 if (type->data.klass->enumtype) {
1320 type = mono_class_enum_basetype (type->data.klass);
1321 goto handle_enum;
1322 }
1323 return CEE_STOBJ;
1324 case MONO_TYPE_TYPEDBYREF:
1325 return CEE_STOBJ;
1326 case MONO_TYPE_GENERICINST:
1327 type = &type->data.generic_class->container_class->byval_arg;
1328 goto handle_enum;
1329 default:
1330 g_error ("unknown type 0x%02x in type_to_stind", type->type);
1331 }
1332 return -1;
1333 }
1334
1335 #ifndef DISABLE_JIT
1336
1337 static void
1338 emit_ptr_to_object_conv (MonoMethodBuilder *mb, MonoType *type, MonoMarshalConv conv, MonoMarshalSpec *mspec)
1339 {
1340 switch (conv) {
1341 case MONO_MARSHAL_CONV_BOOL_I4:
1342 mono_mb_emit_ldloc (mb, 1);
1343 mono_mb_emit_ldloc (mb, 0);
1344 mono_mb_emit_byte (mb, CEE_LDIND_I4);
1345 mono_mb_emit_byte (mb, CEE_BRFALSE_S);
1346 mono_mb_emit_byte (mb, 3);
1347 mono_mb_emit_byte (mb, CEE_LDC_I4_1);
1348 mono_mb_emit_byte (mb, CEE_BR_S);
1349 mono_mb_emit_byte (mb, 1);
1350 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
1351 mono_mb_emit_byte (mb, CEE_STIND_I1);
1352 break;
1353 case MONO_MARSHAL_CONV_BOOL_VARIANTBOOL:
1354 mono_mb_emit_ldloc (mb, 1);
1355 mono_mb_emit_ldloc (mb, 0);
1356 mono_mb_emit_byte (mb, CEE_LDIND_I2);
1357 mono_mb_emit_byte (mb, CEE_BRFALSE_S);
1358 mono_mb_emit_byte (mb, 3);
1359 mono_mb_emit_byte (mb, CEE_LDC_I4_1);
1360 mono_mb_emit_byte (mb, CEE_BR_S);
1361 mono_mb_emit_byte (mb, 1);
1362 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
1363 mono_mb_emit_byte (mb, CEE_STIND_I1);
1364 break;
1365 case MONO_MARSHAL_CONV_ARRAY_BYVALARRAY: {
1366 MonoClass *eklass = NULL;
1367 int esize;
1368
1369 if (type->type == MONO_TYPE_SZARRAY) {
1370 eklass = type->data.klass;
1371 } else {
1372 g_assert_not_reached ();
1373 }
1374
1375 esize = mono_class_native_size (eklass, NULL);
1376
1377 /* create a new array */
1378 mono_mb_emit_ldloc (mb, 1);
1379 mono_mb_emit_icon (mb, mspec->data.array_data.num_elem);
1380 mono_mb_emit_op (mb, CEE_NEWARR, eklass);
1381 mono_mb_emit_byte (mb, CEE_STIND_REF);
1382
1383 if (eklass->blittable) {
1384 /* copy the elements */
1385 mono_mb_emit_ldloc (mb, 1);
1386 mono_mb_emit_byte (mb, CEE_LDIND_I);
1387 mono_mb_emit_icon (mb, MONO_STRUCT_OFFSET (MonoArray, vector));
1388 mono_mb_emit_byte (mb, CEE_ADD);
1389 mono_mb_emit_ldloc (mb, 0);
1390 mono_mb_emit_icon (mb, mspec->data.array_data.num_elem * esize);
1391 mono_mb_emit_byte (mb, CEE_PREFIX1);
1392 mono_mb_emit_byte (mb, CEE_CPBLK);
1393 }
1394 else {
1395 int array_var, src_var, dst_var, index_var;
1396 guint32 label2, label3;
1397
1398 array_var = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
1399 src_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
1400 dst_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
1401
1402 /* set array_var */
1403 mono_mb_emit_ldloc (mb, 1);
1404 mono_mb_emit_byte (mb, CEE_LDIND_REF);
1405 mono_mb_emit_stloc (mb, array_var);
1406
1407 /* save the old src pointer */
1408 mono_mb_emit_ldloc (mb, 0);
1409 mono_mb_emit_stloc (mb, src_var);
1410 /* save the old dst pointer */
1411 mono_mb_emit_ldloc (mb, 1);
1412 mono_mb_emit_stloc (mb, dst_var);
1413
1414 /* Emit marshalling loop */
1415 index_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
1416 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
1417 mono_mb_emit_stloc (mb, index_var);
1418
1419 /* Loop header */
1420 label2 = mono_mb_get_label (mb);
1421 mono_mb_emit_ldloc (mb, index_var);
1422 mono_mb_emit_ldloc (mb, array_var);
1423 mono_mb_emit_byte (mb, CEE_LDLEN);
1424 label3 = mono_mb_emit_branch (mb, CEE_BGE);
1425
1426 /* src is already set */
1427
1428 /* Set dst */
1429 mono_mb_emit_ldloc (mb, array_var);
1430 mono_mb_emit_ldloc (mb, index_var);
1431 mono_mb_emit_op (mb, CEE_LDELEMA, eklass);
1432 mono_mb_emit_stloc (mb, 1);
1433
1434 /* Do the conversion */
1435 emit_struct_conv (mb, eklass, TRUE);
1436
1437 /* Loop footer */
1438 mono_mb_emit_add_to_local (mb, index_var, 1);
1439
1440 mono_mb_emit_branch_label (mb, CEE_BR, label2);
1441
1442 mono_mb_patch_branch (mb, label3);
1443
1444 /* restore the old src pointer */
1445 mono_mb_emit_ldloc (mb, src_var);
1446 mono_mb_emit_stloc (mb, 0);
1447 /* restore the old dst pointer */
1448 mono_mb_emit_ldloc (mb, dst_var);
1449 mono_mb_emit_stloc (mb, 1);
1450 }
1451 break;
1452 }
1453 case MONO_MARSHAL_CONV_ARRAY_BYVALCHARARRAY: {
1454 MonoClass *eclass = mono_defaults.char_class;
1455
1456 /* create a new array */
1457 mono_mb_emit_ldloc (mb, 1);
1458 mono_mb_emit_icon (mb, mspec->data.array_data.num_elem);
1459 mono_mb_emit_op (mb, CEE_NEWARR, eclass);
1460 mono_mb_emit_byte (mb, CEE_STIND_REF);
1461
1462 mono_mb_emit_ldloc (mb, 1);
1463 mono_mb_emit_byte (mb, CEE_LDIND_REF);
1464 mono_mb_emit_ldloc (mb, 0);
1465 mono_mb_emit_icon (mb, mspec->data.array_data.num_elem);
1466 mono_mb_emit_icall (mb, mono_byvalarray_to_byte_array);
1467 break;
1468 }
1469 case MONO_MARSHAL_CONV_STR_BYVALSTR:
1470 if (mspec && mspec->native == MONO_NATIVE_BYVALTSTR && mspec->data.array_data.num_elem) {
1471 mono_mb_emit_ldloc (mb, 1);
1472 mono_mb_emit_ldloc (mb, 0);
1473 mono_mb_emit_icon (mb, mspec->data.array_data.num_elem);
1474 mono_mb_emit_icall (mb, mono_string_from_byvalstr);
1475 } else {
1476 mono_mb_emit_ldloc (mb, 1);
1477 mono_mb_emit_ldloc (mb, 0);
1478 mono_mb_emit_icall (mb, mono_string_new_wrapper);
1479 }
1480 mono_mb_emit_byte (mb, CEE_STIND_REF);
1481 break;
1482 case MONO_MARSHAL_CONV_STR_BYVALWSTR:
1483 if (mspec && mspec->native == MONO_NATIVE_BYVALTSTR && mspec->data.array_data.num_elem) {
1484 mono_mb_emit_ldloc (mb, 1);
1485 mono_mb_emit_ldloc (mb, 0);
1486 mono_mb_emit_icon (mb, mspec->data.array_data.num_elem);
1487 mono_mb_emit_icall (mb, mono_string_from_byvalwstr);
1488 } else {
1489 mono_mb_emit_ldloc (mb, 1);
1490 mono_mb_emit_ldloc (mb, 0);
1491 mono_mb_emit_icall (mb, ves_icall_mono_string_from_utf16);
1492 }
1493 mono_mb_emit_byte (mb, CEE_STIND_REF);
1494 break;
1495 case MONO_MARSHAL_CONV_STR_LPTSTR:
1496 mono_mb_emit_ldloc (mb, 1);
1497 mono_mb_emit_ldloc (mb, 0);
1498 mono_mb_emit_byte (mb, CEE_LDIND_I);
1499 #ifdef TARGET_WIN32
1500 mono_mb_emit_icall (mb, ves_icall_mono_string_from_utf16);
1501 #else
1502 mono_mb_emit_icall (mb, mono_string_new_wrapper);
1503 #endif
1504 mono_mb_emit_byte (mb, CEE_STIND_REF);
1505 break;
1506 case MONO_MARSHAL_CONV_STR_LPSTR:
1507 mono_mb_emit_ldloc (mb, 1);
1508 mono_mb_emit_ldloc (mb, 0);
1509 mono_mb_emit_byte (mb, CEE_LDIND_I);
1510 mono_mb_emit_icall (mb, mono_string_new_wrapper);
1511 mono_mb_emit_byte (mb, CEE_STIND_REF);
1512 break;
1513 case MONO_MARSHAL_CONV_STR_LPWSTR:
1514 mono_mb_emit_ldloc (mb, 1);
1515 mono_mb_emit_ldloc (mb, 0);
1516 mono_mb_emit_byte (mb, CEE_LDIND_I);
1517 mono_mb_emit_icall (mb, ves_icall_mono_string_from_utf16);
1518 mono_mb_emit_byte (mb, CEE_STIND_REF);
1519 break;
1520 case MONO_MARSHAL_CONV_OBJECT_STRUCT: {
1521 MonoClass *klass = mono_class_from_mono_type (type);
1522 int src_var, dst_var;
1523
1524 src_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
1525 dst_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
1526
1527 /* *dst = new object */
1528 mono_mb_emit_ldloc (mb, 1);
1529 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
1530 mono_mb_emit_op (mb, CEE_MONO_NEWOBJ, klass);
1531 mono_mb_emit_byte (mb, CEE_STIND_REF);
1532
1533 /* save the old src pointer */
1534 mono_mb_emit_ldloc (mb, 0);
1535 mono_mb_emit_stloc (mb, src_var);
1536 /* save the old dst pointer */
1537 mono_mb_emit_ldloc (mb, 1);
1538 mono_mb_emit_stloc (mb, dst_var);
1539
1540 /* dst = pointer to newly created object data */
1541 mono_mb_emit_ldloc (mb, 1);
1542 mono_mb_emit_byte (mb, CEE_LDIND_I);
1543 mono_mb_emit_icon (mb, sizeof (MonoObject));
1544 mono_mb_emit_byte (mb, CEE_ADD);
1545 mono_mb_emit_stloc (mb, 1);
1546
1547 emit_struct_conv (mb, klass, TRUE);
1548
1549 /* restore the old src pointer */
1550 mono_mb_emit_ldloc (mb, src_var);
1551 mono_mb_emit_stloc (mb, 0);
1552 /* restore the old dst pointer */
1553 mono_mb_emit_ldloc (mb, dst_var);
1554 mono_mb_emit_stloc (mb, 1);
1555 break;
1556 }
1557 case MONO_MARSHAL_CONV_DEL_FTN: {
1558 MonoClass *klass = mono_class_from_mono_type (type);
1559
1560 mono_mb_emit_ldloc (mb, 1);
1561 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
1562 mono_mb_emit_op (mb, CEE_MONO_CLASSCONST, klass);
1563 mono_mb_emit_ldloc (mb, 0);
1564 mono_mb_emit_byte (mb, CEE_LDIND_I);
1565 mono_mb_emit_icall (mb, mono_ftnptr_to_delegate);
1566 mono_mb_emit_byte (mb, CEE_STIND_REF);
1567 break;
1568 }
1569 case MONO_MARSHAL_CONV_ARRAY_LPARRAY:
1570 g_error ("Structure field of type %s can't be marshalled as LPArray", mono_class_from_mono_type (type)->name);
1571 break;
1572
1573 #ifndef DISABLE_COM
1574 case MONO_MARSHAL_CONV_OBJECT_INTERFACE:
1575 case MONO_MARSHAL_CONV_OBJECT_IUNKNOWN:
1576 case MONO_MARSHAL_CONV_OBJECT_IDISPATCH:
1577 mono_cominterop_emit_ptr_to_object_conv (mb, type, conv, mspec);
1578 break;
1579 #endif /* DISABLE_COM */
1580
1581 case MONO_MARSHAL_CONV_SAFEHANDLE: {
1582 /*
1583 * Passing SafeHandles as ref does not allow the unmanaged code
1584 * to change the SafeHandle value. If the value is changed,
1585 * we should issue a diagnostic exception (NotSupportedException)
1586 * that informs the user that changes to handles in unmanaged code
1587 * is not supported.
1588 *
1589 * Since we currently have no access to the original
1590 * SafeHandle that was used during the marshalling,
1591 * for now we just ignore this, and ignore/discard any
1592 * changes that might have happened to the handle.
1593 */
1594 break;
1595 }
1596
1597 case MONO_MARSHAL_CONV_HANDLEREF: {
1598 /*
1599 * Passing HandleRefs in a struct that is ref()ed does not
1600 * copy the values back to the HandleRef
1601 */
1602 break;
1603 }
1604
1605 case MONO_MARSHAL_CONV_STR_BSTR:
1606 case MONO_MARSHAL_CONV_STR_ANSIBSTR:
1607 case MONO_MARSHAL_CONV_STR_TBSTR:
1608 case MONO_MARSHAL_CONV_ARRAY_SAVEARRAY:
1609 default: {
1610 char *msg = g_strdup_printf ("marshaling conversion %d not implemented", conv);
1611
1612 mono_mb_emit_exception_marshal_directive (mb, msg);
1613 break;
1614 }
1615 }
1616 }
1617
1618 static gpointer
1619 conv_to_icall (MonoMarshalConv conv, int *ind_store_type)
1620 {
1621 int dummy;
1622 if (!ind_store_type)
1623 ind_store_type = &dummy;
1624 *ind_store_type = CEE_STIND_I;
1625 switch (conv) {
1626 case MONO_MARSHAL_CONV_STR_LPWSTR:
1627 return mono_marshal_string_to_utf16;
1628 case MONO_MARSHAL_CONV_LPWSTR_STR:
1629 *ind_store_type = CEE_STIND_REF;
1630 return ves_icall_mono_string_from_utf16;
1631 case MONO_MARSHAL_CONV_LPTSTR_STR:
1632 *ind_store_type = CEE_STIND_REF;
1633 return mono_string_new_wrapper;
1634 case MONO_MARSHAL_CONV_LPSTR_STR:
1635 *ind_store_type = CEE_STIND_REF;
1636 return mono_string_new_wrapper;
1637 case MONO_MARSHAL_CONV_STR_LPTSTR:
1638 #ifdef TARGET_WIN32
1639 return mono_marshal_string_to_utf16;
1640 #else
1641 return mono_string_to_lpstr;
1642 #endif
1643 case MONO_MARSHAL_CONV_STR_LPSTR:
1644 return mono_string_to_lpstr;
1645 case MONO_MARSHAL_CONV_STR_BSTR:
1646 return mono_string_to_bstr;
1647 case MONO_MARSHAL_CONV_BSTR_STR:
1648 *ind_store_type = CEE_STIND_REF;
1649 return mono_string_from_bstr_icall;
1650 case MONO_MARSHAL_CONV_STR_TBSTR:
1651 case MONO_MARSHAL_CONV_STR_ANSIBSTR:
1652 return mono_string_to_ansibstr;
1653 case MONO_MARSHAL_CONV_SB_LPSTR:
1654 return mono_string_builder_to_utf8;
1655 case MONO_MARSHAL_CONV_SB_LPTSTR:
1656 #ifdef TARGET_WIN32
1657 return mono_string_builder_to_utf16;
1658 #else
1659 return mono_string_builder_to_utf8;
1660 #endif
1661 case MONO_MARSHAL_CONV_SB_LPWSTR:
1662 return mono_string_builder_to_utf16;
1663 case MONO_MARSHAL_CONV_ARRAY_SAVEARRAY:
1664 return mono_array_to_savearray;
1665 case MONO_MARSHAL_CONV_ARRAY_LPARRAY:
1666 return mono_array_to_lparray;
1667 case MONO_MARSHAL_FREE_LPARRAY:
1668 return mono_free_lparray;
1669 case MONO_MARSHAL_CONV_DEL_FTN:
1670 return mono_delegate_to_ftnptr;
1671 case MONO_MARSHAL_CONV_FTN_DEL:
1672 *ind_store_type = CEE_STIND_REF;
1673 return mono_ftnptr_to_delegate;
1674 case MONO_MARSHAL_CONV_LPSTR_SB:
1675 *ind_store_type = CEE_STIND_REF;
1676 return mono_string_utf8_to_builder;
1677 case MONO_MARSHAL_CONV_LPTSTR_SB:
1678 *ind_store_type = CEE_STIND_REF;
1679 #ifdef TARGET_WIN32
1680 return mono_string_utf16_to_builder;
1681 #else
1682 return mono_string_utf8_to_builder;
1683 #endif
1684 case MONO_MARSHAL_CONV_LPWSTR_SB:
1685 *ind_store_type = CEE_STIND_REF;
1686 return mono_string_utf16_to_builder;
1687 case MONO_MARSHAL_FREE_ARRAY:
1688 return mono_marshal_free_array;
1689 case MONO_MARSHAL_CONV_STR_BYVALSTR:
1690 return mono_string_to_byvalstr;
1691 case MONO_MARSHAL_CONV_STR_BYVALWSTR:
1692 return mono_string_to_byvalwstr;
1693 default:
1694 g_assert_not_reached ();
1695 }
1696
1697 return NULL;
1698 }
1699
1700 static void
1701 emit_object_to_ptr_conv (MonoMethodBuilder *mb, MonoType *type, MonoMarshalConv conv, MonoMarshalSpec *mspec)
1702 {
1703 int pos;
1704 int stind_op;
1705
1706 switch (conv) {
1707 case MONO_MARSHAL_CONV_BOOL_I4:
1708 mono_mb_emit_ldloc (mb, 1);
1709 mono_mb_emit_ldloc (mb, 0);
1710 mono_mb_emit_byte (mb, CEE_LDIND_U1);
1711 mono_mb_emit_byte (mb, CEE_STIND_I4);
1712 break;
1713 case MONO_MARSHAL_CONV_BOOL_VARIANTBOOL:
1714 mono_mb_emit_ldloc (mb, 1);
1715 mono_mb_emit_ldloc (mb, 0);
1716 mono_mb_emit_byte (mb, CEE_LDIND_U1);
1717 mono_mb_emit_byte (mb, CEE_NEG);
1718 mono_mb_emit_byte (mb, CEE_STIND_I2);
1719 break;
1720 case MONO_MARSHAL_CONV_STR_LPWSTR:
1721 case MONO_MARSHAL_CONV_STR_LPSTR:
1722 case MONO_MARSHAL_CONV_STR_LPTSTR:
1723 case MONO_MARSHAL_CONV_STR_BSTR:
1724 case MONO_MARSHAL_CONV_STR_ANSIBSTR:
1725 case MONO_MARSHAL_CONV_STR_TBSTR: {
1726 int pos;
1727
1728 /* free space if free == true */
1729 mono_mb_emit_ldloc (mb, 2);
1730 pos = mono_mb_emit_short_branch (mb, CEE_BRFALSE_S);
1731 mono_mb_emit_ldloc (mb, 1);
1732 mono_mb_emit_byte (mb, CEE_LDIND_I);
1733 mono_mb_emit_icall (mb, g_free);
1734 mono_mb_patch_short_branch (mb, pos);
1735
1736 mono_mb_emit_ldloc (mb, 1);
1737 mono_mb_emit_ldloc (mb, 0);
1738 mono_mb_emit_byte (mb, CEE_LDIND_REF);
1739 mono_mb_emit_icall (mb, conv_to_icall (conv, &stind_op));
1740 mono_mb_emit_byte (mb, stind_op);
1741 break;
1742 }
1743 case MONO_MARSHAL_CONV_ARRAY_SAVEARRAY:
1744 case MONO_MARSHAL_CONV_ARRAY_LPARRAY:
1745 case MONO_MARSHAL_CONV_DEL_FTN:
1746 mono_mb_emit_ldloc (mb, 1);
1747 mono_mb_emit_ldloc (mb, 0);
1748 mono_mb_emit_byte (mb, CEE_LDIND_REF);
1749 mono_mb_emit_icall (mb, conv_to_icall (conv, &stind_op));
1750 mono_mb_emit_byte (mb, stind_op);
1751 break;
1752 case MONO_MARSHAL_CONV_STR_BYVALSTR:
1753 case MONO_MARSHAL_CONV_STR_BYVALWSTR: {
1754 g_assert (mspec);
1755
1756 mono_mb_emit_ldloc (mb, 1); /* dst */
1757 mono_mb_emit_ldloc (mb, 0);
1758 mono_mb_emit_byte (mb, CEE_LDIND_REF); /* src String */
1759 mono_mb_emit_icon (mb, mspec->data.array_data.num_elem);
1760 mono_mb_emit_icall (mb, conv_to_icall (conv, NULL));
1761 break;
1762 }
1763 case MONO_MARSHAL_CONV_ARRAY_BYVALARRAY: {
1764 MonoClass *eklass = NULL;
1765 int esize;
1766
1767 if (type->type == MONO_TYPE_SZARRAY) {
1768 eklass = type->data.klass;
1769 } else {
1770 g_assert_not_reached ();
1771 }
1772
1773 if (eklass->valuetype)
1774 esize = mono_class_native_size (eklass, NULL);
1775 else
1776 esize = sizeof (gpointer);
1777
1778 mono_mb_emit_ldloc (mb, 0);
1779 mono_mb_emit_byte (mb, CEE_LDIND_REF);
1780 pos = mono_mb_emit_branch (mb, CEE_BRFALSE);
1781
1782 if (eklass->blittable) {
1783 mono_mb_emit_ldloc (mb, 1);
1784 mono_mb_emit_ldloc (mb, 0);
1785 mono_mb_emit_byte (mb, CEE_LDIND_REF);
1786 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoArray, vector));
1787 mono_mb_emit_icon (mb, mspec->data.array_data.num_elem * esize);
1788 mono_mb_emit_byte (mb, CEE_PREFIX1);
1789 mono_mb_emit_byte (mb, CEE_CPBLK);
1790 } else {
1791 int array_var, src_var, dst_var, index_var;
1792 guint32 label2, label3;
1793
1794 array_var = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
1795 src_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
1796 dst_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
1797
1798 /* set array_var */
1799 mono_mb_emit_ldloc (mb, 0);
1800 mono_mb_emit_byte (mb, CEE_LDIND_REF);
1801 mono_mb_emit_stloc (mb, array_var);
1802
1803 /* save the old src pointer */
1804 mono_mb_emit_ldloc (mb, 0);
1805 mono_mb_emit_stloc (mb, src_var);
1806 /* save the old dst pointer */
1807 mono_mb_emit_ldloc (mb, 1);
1808 mono_mb_emit_stloc (mb, dst_var);
1809
1810 /* Emit marshalling loop */
1811 index_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
1812 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
1813 mono_mb_emit_stloc (mb, index_var);
1814
1815 /* Loop header */
1816 label2 = mono_mb_get_label (mb);
1817 mono_mb_emit_ldloc (mb, index_var);
1818 mono_mb_emit_ldloc (mb, array_var);
1819 mono_mb_emit_byte (mb, CEE_LDLEN);
1820 label3 = mono_mb_emit_branch (mb, CEE_BGE);
1821
1822 /* Set src */
1823 mono_mb_emit_ldloc (mb, array_var);
1824 mono_mb_emit_ldloc (mb, index_var);
1825 mono_mb_emit_op (mb, CEE_LDELEMA, eklass);
1826 mono_mb_emit_stloc (mb, 0);
1827
1828 /* dst is already set */
1829
1830 /* Do the conversion */
1831 emit_struct_conv (mb, eklass, FALSE);
1832
1833 /* Loop footer */
1834 mono_mb_emit_add_to_local (mb, index_var, 1);
1835
1836 mono_mb_emit_branch_label (mb, CEE_BR, label2);
1837
1838 mono_mb_patch_branch (mb, label3);
1839
1840 /* restore the old src pointer */
1841 mono_mb_emit_ldloc (mb, src_var);
1842 mono_mb_emit_stloc (mb, 0);
1843 /* restore the old dst pointer */
1844 mono_mb_emit_ldloc (mb, dst_var);
1845 mono_mb_emit_stloc (mb, 1);
1846 }
1847
1848 mono_mb_patch_branch (mb, pos);
1849 break;
1850 }
1851 case MONO_MARSHAL_CONV_ARRAY_BYVALCHARARRAY: {
1852 mono_mb_emit_ldloc (mb, 0);
1853 mono_mb_emit_byte (mb, CEE_LDIND_REF);
1854 pos = mono_mb_emit_short_branch (mb, CEE_BRFALSE_S);
1855
1856 mono_mb_emit_ldloc (mb, 1);
1857 mono_mb_emit_ldloc (mb, 0);
1858 mono_mb_emit_byte (mb, CEE_LDIND_REF);
1859 mono_mb_emit_icon (mb, mspec->data.array_data.num_elem);
1860 mono_mb_emit_icall (mb, mono_array_to_byte_byvalarray);
1861 mono_mb_patch_short_branch (mb, pos);
1862 break;
1863 }
1864 case MONO_MARSHAL_CONV_OBJECT_STRUCT: {
1865 int src_var, dst_var;
1866
1867 src_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
1868 dst_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
1869
1870 mono_mb_emit_ldloc (mb, 0);
1871 mono_mb_emit_byte (mb, CEE_LDIND_I);
1872 pos = mono_mb_emit_branch (mb, CEE_BRFALSE);
1873
1874 /* save the old src pointer */
1875 mono_mb_emit_ldloc (mb, 0);
1876 mono_mb_emit_stloc (mb, src_var);
1877 /* save the old dst pointer */
1878 mono_mb_emit_ldloc (mb, 1);
1879 mono_mb_emit_stloc (mb, dst_var);
1880
1881 /* src = pointer to object data */
1882 mono_mb_emit_ldloc (mb, 0);
1883 mono_mb_emit_byte (mb, CEE_LDIND_I);
1884 mono_mb_emit_icon (mb, sizeof (MonoObject));
1885 mono_mb_emit_byte (mb, CEE_ADD);
1886 mono_mb_emit_stloc (mb, 0);
1887
1888 emit_struct_conv (mb, mono_class_from_mono_type (type), FALSE);
1889
1890 /* restore the old src pointer */
1891 mono_mb_emit_ldloc (mb, src_var);
1892 mono_mb_emit_stloc (mb, 0);
1893 /* restore the old dst pointer */
1894 mono_mb_emit_ldloc (mb, dst_var);
1895 mono_mb_emit_stloc (mb, 1);
1896
1897 mono_mb_patch_branch (mb, pos);
1898 break;
1899 }
1900
1901 #ifndef DISABLE_COM
1902 case MONO_MARSHAL_CONV_OBJECT_INTERFACE:
1903 case MONO_MARSHAL_CONV_OBJECT_IDISPATCH:
1904 case MONO_MARSHAL_CONV_OBJECT_IUNKNOWN:
1905 mono_cominterop_emit_object_to_ptr_conv (mb, type, conv, mspec);
1906 break;
1907 #endif /* DISABLE_COM */
1908
1909 case MONO_MARSHAL_CONV_SAFEHANDLE: {
1910 int pos;
1911
1912 mono_mb_emit_ldloc (mb, 0);
1913 mono_mb_emit_byte (mb, CEE_LDIND_I);
1914 pos = mono_mb_emit_branch (mb, CEE_BRTRUE);
1915 mono_mb_emit_exception (mb, "ArgumentNullException", NULL);
1916 mono_mb_patch_branch (mb, pos);
1917
1918 /* Pull the handle field from SafeHandle */
1919 mono_mb_emit_ldloc (mb, 1);
1920 mono_mb_emit_ldloc (mb, 0);
1921 mono_mb_emit_byte (mb, CEE_LDIND_I);
1922 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoSafeHandle, handle));
1923 mono_mb_emit_byte (mb, CEE_LDIND_I);
1924 mono_mb_emit_byte (mb, CEE_STIND_I);
1925 break;
1926 }
1927
1928 case MONO_MARSHAL_CONV_HANDLEREF: {
1929 mono_mb_emit_ldloc (mb, 1);
1930 mono_mb_emit_ldloc (mb, 0);
1931 mono_mb_emit_icon (mb, MONO_STRUCT_OFFSET (MonoHandleRef, handle));
1932 mono_mb_emit_byte (mb, CEE_ADD);
1933 mono_mb_emit_byte (mb, CEE_LDIND_I);
1934 mono_mb_emit_byte (mb, CEE_STIND_I);
1935 break;
1936 }
1937
1938 default: {
1939 g_error ("marshalling conversion %d not implemented", conv);
1940 }
1941 }
1942 }
1943
1944 static int offset_of_first_nonstatic_field(MonoClass *klass)
1945 {
1946 int i;
1947 for (i = 0; i < klass->field.count; i++) {
1948 if (!(klass->fields[i].type->attrs & FIELD_ATTRIBUTE_STATIC) && !mono_field_is_deleted (&klass->fields[i]))
1949 return klass->fields[i].offset - sizeof (MonoObject);
1950 }
1951
1952 return 0;
1953 }
1954
1955 static void
1956 emit_struct_conv_full (MonoMethodBuilder *mb, MonoClass *klass, gboolean to_object,
1957 int offset_of_first_child_field, MonoMarshalNative string_encoding)
1958 {
1959 MonoMarshalType *info;
1960 int i;
1961
1962 if (klass->parent)
1963 emit_struct_conv_full (mb, klass->parent, to_object, offset_of_first_nonstatic_field (klass), string_encoding);
1964
1965 info = mono_marshal_load_type_info (klass);
1966
1967 if (info->native_size == 0)
1968 return;
1969
1970 if (klass->blittable) {
1971 int usize = mono_class_value_size (klass, NULL);
1972 g_assert (usize == info->native_size);
1973 mono_mb_emit_ldloc (mb, 1);
1974 mono_mb_emit_ldloc (mb, 0);
1975 mono_mb_emit_icon (mb, usize);
1976 mono_mb_emit_byte (mb, CEE_PREFIX1);
1977 mono_mb_emit_byte (mb, CEE_CPBLK);
1978
1979 if (to_object) {
1980 mono_mb_emit_add_to_local (mb, 0, usize);
1981 mono_mb_emit_add_to_local (mb, 1, offset_of_first_child_field);
1982 } else {
1983 mono_mb_emit_add_to_local (mb, 0, offset_of_first_child_field);
1984 mono_mb_emit_add_to_local (mb, 1, usize);
1985 }
1986 return;
1987 }
1988
1989 if (klass != mono_class_try_get_safehandle_class ()) {
1990 if ((klass->flags & TYPE_ATTRIBUTE_LAYOUT_MASK) == TYPE_ATTRIBUTE_AUTO_LAYOUT) {
1991 char *msg = g_strdup_printf ("Type %s which is passed to unmanaged code must have a StructLayout attribute.",
1992 mono_type_full_name (&klass->byval_arg));
1993 mono_mb_emit_exception_marshal_directive (mb, msg);
1994 return;
1995 }
1996 }
1997
1998 for (i = 0; i < info->num_fields; i++) {
1999 MonoMarshalNative ntype;
2000 MonoMarshalConv conv;
2001 MonoType *ftype = info->fields [i].field->type;
2002 int msize = 0;
2003 int usize = 0;
2004 gboolean last_field = i < (info->num_fields -1) ? 0 : 1;
2005
2006 if (ftype->attrs & FIELD_ATTRIBUTE_STATIC)
2007 continue;
2008
2009 ntype = (MonoMarshalNative)mono_type_to_unmanaged (ftype, info->fields [i].mspec, TRUE, klass->unicode, &conv);
2010
2011 if (last_field) {
2012 msize = klass->instance_size - info->fields [i].field->offset;
2013 usize = info->native_size - info->fields [i].offset;
2014 } else {
2015 msize = info->fields [i + 1].field->offset - info->fields [i].field->offset;
2016 usize = info->fields [i + 1].offset - info->fields [i].offset;
2017 }
2018
2019 if (klass != mono_class_try_get_safehandle_class ()){
2020 /*
2021 * FIXME: Should really check for usize==0 and msize>0, but we apply
2022 * the layout to the managed structure as well.
2023 */
2024
2025 if (((klass->flags & TYPE_ATTRIBUTE_LAYOUT_MASK) == TYPE_ATTRIBUTE_EXPLICIT_LAYOUT) && (usize == 0)) {
2026 if (MONO_TYPE_IS_REFERENCE (info->fields [i].field->type) ||
2027 ((!last_field && MONO_TYPE_IS_REFERENCE (info->fields [i + 1].field->type))))
2028 g_error ("Type %s which has an [ExplicitLayout] attribute cannot have a "
2029 "reference field at the same offset as another field.",
2030 mono_type_full_name (&klass->byval_arg));
2031 }
2032 }
2033
2034 switch (conv) {
2035 case MONO_MARSHAL_CONV_NONE: {
2036 int t;
2037
2038 //XXX a byref field!?!? that's not allowed! and worse, it might miss a WB
2039 g_assert (!ftype->byref);
2040 if (ftype->type == MONO_TYPE_I || ftype->type == MONO_TYPE_U) {
2041 mono_mb_emit_ldloc (mb, 1);
2042 mono_mb_emit_ldloc (mb, 0);
2043 mono_mb_emit_byte (mb, CEE_LDIND_I);
2044 mono_mb_emit_byte (mb, CEE_STIND_I);
2045 break;
2046 }
2047
2048 handle_enum:
2049 t = ftype->type;
2050 switch (t) {
2051 case MONO_TYPE_I4:
2052 case MONO_TYPE_U4:
2053 case MONO_TYPE_I1:
2054 case MONO_TYPE_U1:
2055 case MONO_TYPE_BOOLEAN:
2056 case MONO_TYPE_I2:
2057 case MONO_TYPE_U2:
2058 case MONO_TYPE_CHAR:
2059 case MONO_TYPE_I8:
2060 case MONO_TYPE_U8:
2061 case MONO_TYPE_PTR:
2062 case MONO_TYPE_R4:
2063 case MONO_TYPE_R8:
2064 mono_mb_emit_ldloc (mb, 1);
2065 mono_mb_emit_ldloc (mb, 0);
2066 if (t == MONO_TYPE_CHAR && ntype == MONO_NATIVE_U1 && string_encoding != MONO_NATIVE_LPWSTR) {
2067 if (to_object) {
2068 mono_mb_emit_byte (mb, CEE_LDIND_U1);
2069 mono_mb_emit_byte (mb, CEE_STIND_I2);
2070 } else {
2071 mono_mb_emit_byte (mb, CEE_LDIND_U2);
2072 mono_mb_emit_byte (mb, CEE_STIND_I1);
2073 }
2074 } else {
2075 mono_mb_emit_byte (mb, mono_type_to_ldind (ftype));
2076 mono_mb_emit_byte (mb, mono_type_to_stind (ftype));
2077 }
2078 break;
2079 case MONO_TYPE_VALUETYPE: {
2080 int src_var, dst_var;
2081
2082 if (ftype->data.klass->enumtype) {
2083 ftype = mono_class_enum_basetype (ftype->data.klass);
2084 goto handle_enum;
2085 }
2086
2087 src_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
2088 dst_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
2089
2090 /* save the old src pointer */
2091 mono_mb_emit_ldloc (mb, 0);
2092 mono_mb_emit_stloc (mb, src_var);
2093 /* save the old dst pointer */
2094 mono_mb_emit_ldloc (mb, 1);
2095 mono_mb_emit_stloc (mb, dst_var);
2096
2097 emit_struct_conv (mb, ftype->data.klass, to_object);
2098
2099 /* restore the old src pointer */
2100 mono_mb_emit_ldloc (mb, src_var);
2101 mono_mb_emit_stloc (mb, 0);
2102 /* restore the old dst pointer */
2103 mono_mb_emit_ldloc (mb, dst_var);
2104 mono_mb_emit_stloc (mb, 1);
2105 break;
2106 }
2107 case MONO_TYPE_OBJECT: {
2108 #ifndef DISABLE_COM
2109 if (to_object) {
2110 static MonoMethod *variant_clear = NULL;
2111 static MonoMethod *get_object_for_native_variant = NULL;
2112
2113 if (!variant_clear)
2114 variant_clear = mono_class_get_method_from_name (mono_class_get_variant_class (), "Clear", 0);
2115 if (!get_object_for_native_variant)
2116 get_object_for_native_variant = mono_class_get_method_from_name (mono_defaults.marshal_class, "GetObjectForNativeVariant", 1);
2117 mono_mb_emit_ldloc (mb, 1);
2118 mono_mb_emit_ldloc (mb, 0);
2119 mono_mb_emit_managed_call (mb, get_object_for_native_variant, NULL);
2120 mono_mb_emit_byte (mb, CEE_STIND_REF);
2121
2122 mono_mb_emit_ldloc (mb, 0);
2123 mono_mb_emit_managed_call (mb, variant_clear, NULL);
2124 }
2125 else {
2126 static MonoMethod *get_native_variant_for_object = NULL;
2127
2128 if (!get_native_variant_for_object)
2129 get_native_variant_for_object = mono_class_get_method_from_name (mono_defaults.marshal_class, "GetNativeVariantForObject", 2);
2130
2131 mono_mb_emit_ldloc (mb, 0);
2132 mono_mb_emit_byte(mb, CEE_LDIND_REF);
2133 mono_mb_emit_ldloc (mb, 1);
2134 mono_mb_emit_managed_call (mb, get_native_variant_for_object, NULL);
2135 }
2136 #else
2137 char *msg = g_strdup_printf ("COM support was disabled at compilation time.");
2138 mono_mb_emit_exception_marshal_directive (mb, msg);
2139 #endif
2140 break;
2141 }
2142
2143 default:
2144 g_warning ("marshaling type %02x not implemented", ftype->type);
2145 g_assert_not_reached ();
2146 }
2147 break;
2148 }
2149 default: {
2150 int src_var, dst_var;
2151
2152 src_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
2153 dst_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
2154
2155 /* save the old src pointer */
2156 mono_mb_emit_ldloc (mb, 0);
2157 mono_mb_emit_stloc (mb, src_var);
2158 /* save the old dst pointer */
2159 mono_mb_emit_ldloc (mb, 1);
2160 mono_mb_emit_stloc (mb, dst_var);
2161
2162 if (to_object)
2163 emit_ptr_to_object_conv (mb, ftype, conv, info->fields [i].mspec);
2164 else
2165 emit_object_to_ptr_conv (mb, ftype, conv, info->fields [i].mspec);
2166
2167 /* restore the old src pointer */
2168 mono_mb_emit_ldloc (mb, src_var);
2169 mono_mb_emit_stloc (mb, 0);
2170 /* restore the old dst pointer */
2171 mono_mb_emit_ldloc (mb, dst_var);
2172 mono_mb_emit_stloc (mb, 1);
2173 }
2174 }
2175
2176 if (to_object) {
2177 mono_mb_emit_add_to_local (mb, 0, usize);
2178 mono_mb_emit_add_to_local (mb, 1, msize);
2179 } else {
2180 mono_mb_emit_add_to_local (mb, 0, msize);
2181 mono_mb_emit_add_to_local (mb, 1, usize);
2182 }
2183 }
2184 }
2185
2186 static void
2187 emit_struct_conv (MonoMethodBuilder *mb, MonoClass *klass, gboolean to_object)
2188 {
2189 emit_struct_conv_full (mb, klass, to_object, 0, (MonoMarshalNative)-1);
2190 }
2191
2192 static void
2193 emit_struct_free (MonoMethodBuilder *mb, MonoClass *klass, int struct_var)
2194 {
2195 /* Call DestroyStructure */
2196 /* FIXME: Only do this if needed */
2197 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
2198 mono_mb_emit_op (mb, CEE_MONO_CLASSCONST, klass);
2199 mono_mb_emit_ldloc (mb, struct_var);
2200 mono_mb_emit_icall (mb, mono_struct_delete_old);
2201 }
2202
2203 static void
2204 emit_thread_interrupt_checkpoint_call (MonoMethodBuilder *mb, gpointer checkpoint_func)
2205 {
2206 int pos_noabort, pos_noex;
2207
2208 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
2209 mono_mb_emit_byte (mb, CEE_MONO_LDPTR_INT_REQ_FLAG);
2210 mono_mb_emit_byte (mb, CEE_LDIND_U4);
2211 pos_noabort = mono_mb_emit_branch (mb, CEE_BRFALSE);
2212
2213 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
2214 mono_mb_emit_byte (mb, CEE_MONO_NOT_TAKEN);
2215
2216 mono_mb_emit_icall (mb, checkpoint_func);
2217 /* Throw the exception returned by the checkpoint function, if any */
2218 mono_mb_emit_byte (mb, CEE_DUP);
2219 pos_noex = mono_mb_emit_branch (mb, CEE_BRFALSE);
2220 mono_mb_emit_byte (mb, CEE_THROW);
2221 mono_mb_patch_branch (mb, pos_noex);
2222 mono_mb_emit_byte (mb, CEE_POP);
2223
2224 mono_mb_patch_branch (mb, pos_noabort);
2225 }
2226
2227 static void
2228 emit_thread_interrupt_checkpoint (MonoMethodBuilder *mb)
2229 {
2230 if (strstr (mb->name, "mono_thread_interruption_checkpoint"))
2231 return;
2232
2233 emit_thread_interrupt_checkpoint_call (mb, mono_thread_interruption_checkpoint);
2234 }
2235
2236 static void
2237 emit_thread_force_interrupt_checkpoint (MonoMethodBuilder *mb)
2238 {
2239 emit_thread_interrupt_checkpoint_call (mb, mono_thread_force_interruption_checkpoint_noraise);
2240 }
2241
2242 void
2243 mono_marshal_emit_thread_interrupt_checkpoint (MonoMethodBuilder *mb)
2244 {
2245 emit_thread_interrupt_checkpoint (mb);
2246 }
2247
2248 void
2249 mono_marshal_emit_thread_force_interrupt_checkpoint (MonoMethodBuilder *mb)
2250 {
2251 emit_thread_force_interrupt_checkpoint (mb);
2252 }
2253
2254 #endif /* DISABLE_JIT */
2255
2256 /* This is a JIT icall, it sets the pending exception and returns NULL on error. */
2257 static MonoAsyncResult *
2258 mono_delegate_begin_invoke (MonoDelegate *delegate, gpointer *params)
2259 {
2260 MonoError error;
2261 MonoMulticastDelegate *mcast_delegate;
2262 MonoClass *klass;
2263 MonoMethod *method;
2264
2265 g_assert (delegate);
2266 mcast_delegate = (MonoMulticastDelegate *) delegate;
2267 if (mcast_delegate->delegates != NULL) {
2268 mono_set_pending_exception (mono_get_exception_argument (NULL, "The delegate must have only one target"));
2269 return NULL;
2270 }
2271
2272 #ifndef DISABLE_REMOTING
2273 if (delegate->target && mono_object_class (delegate->target) == mono_defaults.transparent_proxy_class) {
2274 MonoTransparentProxy* tp = (MonoTransparentProxy *)delegate->target;
2275 if (!mono_class_is_contextbound (tp->remote_class->proxy_class) || tp->rp->context != (MonoObject *) mono_context_get ()) {
2276 /* If the target is a proxy, make a direct call. Is proxy's work
2277 // to make the call asynchronous.
2278 */
2279 MonoMethodMessage *msg;
2280 MonoDelegate *async_callback;
2281 MonoObject *state;
2282 MonoAsyncResult *ares;
2283 MonoObject *exc;
2284 MonoArray *out_args;
2285 method = delegate->method;
2286
2287 msg = mono_method_call_message_new (mono_marshal_method_from_wrapper (method), params, NULL, &async_callback, &state, &error);
2288 if (mono_error_set_pending_exception (&error))
2289 return NULL;
2290 ares = mono_async_result_new (mono_domain_get (), NULL, state, NULL, NULL, &error);
2291 if (mono_error_set_pending_exception (&error))
2292 return NULL;
2293 MONO_OBJECT_SETREF (ares, async_delegate, (MonoObject *)delegate);
2294 MONO_OBJECT_SETREF (ares, async_callback, (MonoObject *)async_callback);
2295 MONO_OBJECT_SETREF (msg, async_result, ares);
2296 msg->call_type = CallType_BeginInvoke;
2297
2298 exc = NULL;
2299 mono_remoting_invoke ((MonoObject *)tp->rp, msg, &exc, &out_args, &error);
2300 if (!mono_error_ok (&error)) {
2301 mono_error_set_pending_exception (&error);
2302 return NULL;
2303 }
2304 if (exc)
2305 mono_set_pending_exception ((MonoException *) exc);
2306 return ares;
2307 }
2308 }
2309 #endif
2310
2311 klass = delegate->object.vtable->klass;
2312
2313 method = mono_class_get_method_from_name (klass, "BeginInvoke", -1);
2314 if (!method)
2315 method = mono_get_delegate_invoke (klass);
2316 g_assert (method);
2317
2318 MonoAsyncResult *result = mono_threadpool_ms_begin_invoke (mono_domain_get (), (MonoObject*) delegate, method, params, &error);
2319 mono_error_set_pending_exception (&error);
2320 return result;
2321 }
2322
2323 #ifndef DISABLE_JIT
2324
2325 int
2326 mono_mb_emit_save_args (MonoMethodBuilder *mb, MonoMethodSignature *sig, gboolean save_this)
2327 {
2328 int i, params_var, tmp_var;
2329
2330 /* allocate local (pointer) *params[] */
2331 params_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
2332 /* allocate local (pointer) tmp */
2333 tmp_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
2334
2335 /* alloate space on stack to store an array of pointers to the arguments */
2336 mono_mb_emit_icon (mb, sizeof (gpointer) * (sig->param_count + 1));
2337 mono_mb_emit_byte (mb, CEE_PREFIX1);
2338 mono_mb_emit_byte (mb, CEE_LOCALLOC);
2339 mono_mb_emit_stloc (mb, params_var);
2340
2341 /* tmp = params */
2342 mono_mb_emit_ldloc (mb, params_var);
2343 mono_mb_emit_stloc (mb, tmp_var);
2344
2345 if (save_this && sig->hasthis) {
2346 mono_mb_emit_ldloc (mb, tmp_var);
2347 mono_mb_emit_ldarg_addr (mb, 0);
2348 mono_mb_emit_byte (mb, CEE_STIND_I);
2349 /* tmp = tmp + sizeof (gpointer) */
2350 if (sig->param_count)
2351 mono_mb_emit_add_to_local (mb, tmp_var, sizeof (gpointer));
2352
2353 }
2354
2355 for (i = 0; i < sig->param_count; i++) {
2356 mono_mb_emit_ldloc (mb, tmp_var);
2357 mono_mb_emit_ldarg_addr (mb, i + sig->hasthis);
2358 mono_mb_emit_byte (mb, CEE_STIND_I);
2359 /* tmp = tmp + sizeof (gpointer) */
2360 if (i < (sig->param_count - 1))
2361 mono_mb_emit_add_to_local (mb, tmp_var, sizeof (gpointer));
2362 }
2363
2364 return params_var;
2365 }
2366
2367 #endif /* DISABLE_JIT */
2368
2369 static char*
2370 mono_signature_to_name (MonoMethodSignature *sig, const char *prefix)
2371 {
2372 int i;
2373 char *result;
2374 GString *res = g_string_new ("");
2375
2376 if (prefix) {
2377 g_string_append (res, prefix);
2378 g_string_append_c (res, '_');
2379 }
2380
2381 mono_type_get_desc (res, sig->ret, FALSE);
2382
2383 if (sig->hasthis)
2384 g_string_append (res, "__this__");
2385
2386 for (i = 0; i < sig->param_count; ++i) {
2387 g_string_append_c (res, '_');
2388 mono_type_get_desc (res, sig->params [i], FALSE);
2389 }
2390 result = res->str;
2391 g_string_free (res, FALSE);
2392 return result;
2393 }
2394
2395 /**
2396 * mono_marshal_get_string_encoding:
2397 *
2398 * Return the string encoding which should be used for a given parameter.
2399 */
2400 static MonoMarshalNative
2401 mono_marshal_get_string_encoding (MonoMethodPInvoke *piinfo, MonoMarshalSpec *spec)
2402 {
2403 /* First try the parameter marshal info */
2404 if (spec) {
2405 if (spec->native == MONO_NATIVE_LPARRAY) {
2406 if ((spec->data.array_data.elem_type != 0) && (spec->data.array_data.elem_type != MONO_NATIVE_MAX))
2407 return spec->data.array_data.elem_type;
2408 }
2409 else
2410 return spec->native;
2411 }
2412
2413 if (!piinfo)
2414 return MONO_NATIVE_LPSTR;
2415
2416 /* Then try the method level marshal info */
2417 switch (piinfo->piflags & PINVOKE_ATTRIBUTE_CHAR_SET_MASK) {
2418 case PINVOKE_ATTRIBUTE_CHAR_SET_ANSI:
2419 return MONO_NATIVE_LPSTR;
2420 case PINVOKE_ATTRIBUTE_CHAR_SET_UNICODE:
2421 return MONO_NATIVE_LPWSTR;
2422 case PINVOKE_ATTRIBUTE_CHAR_SET_AUTO:
2423 #ifdef TARGET_WIN32
2424 return MONO_NATIVE_LPWSTR;
2425 #else
2426 return MONO_NATIVE_LPSTR;
2427 #endif
2428 default:
2429 return MONO_NATIVE_LPSTR;
2430 }
2431 }
2432
2433 static MonoMarshalConv
2434 mono_marshal_get_string_to_ptr_conv (MonoMethodPInvoke *piinfo, MonoMarshalSpec *spec)
2435 {
2436 MonoMarshalNative encoding = mono_marshal_get_string_encoding (piinfo, spec);
2437
2438 switch (encoding) {
2439 case MONO_NATIVE_LPWSTR:
2440 return MONO_MARSHAL_CONV_STR_LPWSTR;
2441 case MONO_NATIVE_LPSTR:
2442 case MONO_NATIVE_VBBYREFSTR:
2443 return MONO_MARSHAL_CONV_STR_LPSTR;
2444 case MONO_NATIVE_LPTSTR:
2445 return MONO_MARSHAL_CONV_STR_LPTSTR;
2446 case MONO_NATIVE_BSTR:
2447 return MONO_MARSHAL_CONV_STR_BSTR;
2448 default:
2449 return MONO_MARSHAL_CONV_INVALID;
2450 }
2451 }
2452
2453 static MonoMarshalConv
2454 mono_marshal_get_stringbuilder_to_ptr_conv (MonoMethodPInvoke *piinfo, MonoMarshalSpec *spec)
2455 {
2456 MonoMarshalNative encoding = mono_marshal_get_string_encoding (piinfo, spec);
2457
2458 switch (encoding) {
2459 case MONO_NATIVE_LPWSTR:
2460 return MONO_MARSHAL_CONV_SB_LPWSTR;
2461 break;
2462 case MONO_NATIVE_LPSTR:
2463 return MONO_MARSHAL_CONV_SB_LPSTR;
2464 break;
2465 case MONO_NATIVE_LPTSTR:
2466 return MONO_MARSHAL_CONV_SB_LPTSTR;
2467 break;
2468 default:
2469 return MONO_MARSHAL_CONV_INVALID;
2470 }
2471 }
2472
2473 static MonoMarshalConv
2474 mono_marshal_get_ptr_to_string_conv (MonoMethodPInvoke *piinfo, MonoMarshalSpec *spec, gboolean *need_free)
2475 {
2476 MonoMarshalNative encoding = mono_marshal_get_string_encoding (piinfo, spec);
2477
2478 *need_free = TRUE;
2479
2480 switch (encoding) {
2481 case MONO_NATIVE_LPWSTR:
2482 *need_free = FALSE;
2483 return MONO_MARSHAL_CONV_LPWSTR_STR;
2484 case MONO_NATIVE_LPSTR:
2485 case MONO_NATIVE_VBBYREFSTR:
2486 return MONO_MARSHAL_CONV_LPSTR_STR;
2487 case MONO_NATIVE_LPTSTR:
2488 return MONO_MARSHAL_CONV_LPTSTR_STR;
2489 case MONO_NATIVE_BSTR:
2490 return MONO_MARSHAL_CONV_BSTR_STR;
2491 default:
2492 return MONO_MARSHAL_CONV_INVALID;
2493 }
2494 }
2495
2496 static MonoMarshalConv
2497 mono_marshal_get_ptr_to_stringbuilder_conv (MonoMethodPInvoke *piinfo, MonoMarshalSpec *spec, gboolean *need_free)
2498 {
2499 MonoMarshalNative encoding = mono_marshal_get_string_encoding (piinfo, spec);
2500
2501 *need_free = TRUE;
2502
2503 switch (encoding) {
2504 case MONO_NATIVE_LPWSTR:
2505 /*
2506 * mono_string_builder_to_utf16 does not allocate a
2507 * new buffer, so no need to free it.
2508 */
2509 *need_free = FALSE;
2510 return MONO_MARSHAL_CONV_LPWSTR_SB;
2511 case MONO_NATIVE_LPSTR:
2512 return MONO_MARSHAL_CONV_LPSTR_SB;
2513 break;
2514 case MONO_NATIVE_LPTSTR:
2515 return MONO_MARSHAL_CONV_LPTSTR_SB;
2516 break;
2517 default:
2518 return MONO_MARSHAL_CONV_INVALID;
2519 }
2520 }
2521
2522 /*
2523 * Return whenever a field of a native structure or an array member needs to
2524 * be freed.
2525 */
2526 static gboolean
2527 mono_marshal_need_free (MonoType *t, MonoMethodPInvoke *piinfo, MonoMarshalSpec *spec)
2528 {
2529 MonoMarshalNative encoding;
2530
2531 switch (t->type) {
2532 case MONO_TYPE_VALUETYPE:
2533 /* FIXME: Optimize this */
2534 return TRUE;
2535 case MONO_TYPE_OBJECT:
2536 case MONO_TYPE_CLASS:
2537 if (t->data.klass == mono_defaults.stringbuilder_class) {
2538 gboolean need_free;
2539 mono_marshal_get_ptr_to_stringbuilder_conv (piinfo, spec, &need_free);
2540 return need_free;
2541 }
2542 return FALSE;
2543 case MONO_TYPE_STRING:
2544 encoding = mono_marshal_get_string_encoding (piinfo, spec);
2545 return (encoding == MONO_NATIVE_LPWSTR) ? FALSE : TRUE;
2546 default:
2547 return FALSE;
2548 }
2549 }
2550
2551 /*
2552 * Return the hash table pointed to by VAR, lazily creating it if neccesary.
2553 */
2554 static GHashTable*
2555 get_cache (GHashTable **var, GHashFunc hash_func, GCompareFunc equal_func)
2556 {
2557 if (!(*var)) {
2558 mono_marshal_lock ();
2559 if (!(*var)) {
2560 GHashTable *cache =
2561 g_hash_table_new (hash_func, equal_func);
2562 mono_memory_barrier ();
2563 *var = cache;
2564 }
2565 mono_marshal_unlock ();
2566 }
2567 return *var;
2568 }
2569
2570 GHashTable*
2571 mono_marshal_get_cache (GHashTable **var, GHashFunc hash_func, GCompareFunc equal_func)
2572 {
2573 return get_cache (var, hash_func, equal_func);
2574 }
2575
2576 MonoMethod*
2577 mono_marshal_find_in_cache (GHashTable *cache, gpointer key)
2578 {
2579 MonoMethod *res;
2580
2581 mono_marshal_lock ();
2582 res = (MonoMethod *)g_hash_table_lookup (cache, key);
2583 mono_marshal_unlock ();
2584 return res;
2585 }
2586
2587 /*
2588 * mono_mb_create:
2589 *
2590 * Create a MonoMethod from MB, set INFO as wrapper info.
2591 */
2592 MonoMethod*
2593 mono_mb_create (MonoMethodBuilder *mb, MonoMethodSignature *sig,
2594 int max_stack, WrapperInfo *info)
2595 {
2596 MonoMethod *res;
2597
2598 res = mono_mb_create_method (mb, sig, max_stack);
2599 if (info)
2600 mono_marshal_set_wrapper_info (res, info);
2601 return res;
2602 }
2603
2604 /* Create the method from the builder and place it in the cache */
2605 MonoMethod*
2606 mono_mb_create_and_cache_full (GHashTable *cache, gpointer key,
2607 MonoMethodBuilder *mb, MonoMethodSignature *sig,
2608 int max_stack, WrapperInfo *info, gboolean *out_found)
2609 {
2610 MonoMethod *res;
2611
2612 if (out_found)
2613 *out_found = FALSE;
2614
2615 mono_marshal_lock ();
2616 res = (MonoMethod *)g_hash_table_lookup (cache, key);
2617 mono_marshal_unlock ();
2618 if (!res) {
2619 MonoMethod *newm;
2620 newm = mono_mb_create_method (mb, sig, max_stack);
2621 mono_marshal_lock ();
2622 res = (MonoMethod *)g_hash_table_lookup (cache, key);
2623 if (!res) {
2624 res = newm;
2625 g_hash_table_insert (cache, key, res);
2626 mono_marshal_set_wrapper_info (res, info);
2627 mono_marshal_unlock ();
2628 } else {
2629 if (out_found)
2630 *out_found = TRUE;
2631 mono_marshal_unlock ();
2632 mono_free_method (newm);
2633 }
2634 }
2635
2636 return res;
2637 }
2638
2639 MonoMethod*
2640 mono_mb_create_and_cache (GHashTable *cache, gpointer key,
2641 MonoMethodBuilder *mb, MonoMethodSignature *sig,
2642 int max_stack)
2643 {
2644 return mono_mb_create_and_cache_full (cache, key, mb, sig, max_stack, NULL, NULL);
2645 }
2646
2647 MonoMethod *
2648 mono_marshal_method_from_wrapper (MonoMethod *wrapper)
2649 {
2650 MonoMethod *m;
2651 int wrapper_type = wrapper->wrapper_type;
2652 WrapperInfo *info;
2653
2654 if (wrapper_type == MONO_WRAPPER_NONE || wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD)
2655 return wrapper;
2656
2657 info = mono_marshal_get_wrapper_info (wrapper);
2658
2659 switch (wrapper_type) {
2660 case MONO_WRAPPER_REMOTING_INVOKE:
2661 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK:
2662 case MONO_WRAPPER_XDOMAIN_INVOKE:
2663 m = info->d.remoting.method;
2664 if (wrapper->is_inflated) {
2665 MonoError error;
2666 MonoMethod *result;
2667 /*
2668 * A method cannot be inflated and a wrapper at the same time, so the wrapper info
2669 * contains an uninflated method.
2670 */
2671 result = mono_class_inflate_generic_method_checked (m, mono_method_get_context (wrapper), &error);
2672 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
2673 return result;
2674 }
2675 return m;
2676 case MONO_WRAPPER_SYNCHRONIZED:
2677 m = info->d.synchronized.method;
2678 if (wrapper->is_inflated) {
2679 MonoError error;
2680 MonoMethod *result;
2681 result = mono_class_inflate_generic_method_checked (m, mono_method_get_context (wrapper), &error);
2682 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
2683 return result;
2684 }
2685 return m;
2686 case MONO_WRAPPER_UNBOX:
2687 return info->d.unbox.method;
2688 case MONO_WRAPPER_MANAGED_TO_NATIVE:
2689 if (info && (info->subtype == WRAPPER_SUBTYPE_NONE || info->subtype == WRAPPER_SUBTYPE_NATIVE_FUNC_AOT || info->subtype == WRAPPER_SUBTYPE_PINVOKE))
2690 return info->d.managed_to_native.method;
2691 else
2692 return NULL;
2693 case MONO_WRAPPER_RUNTIME_INVOKE:
2694 if (info && (info->subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_DIRECT || info->subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_VIRTUAL))
2695 return info->d.runtime_invoke.method;
2696 else
2697 return NULL;
2698 case MONO_WRAPPER_DELEGATE_INVOKE:
2699 if (info)
2700 return info->d.delegate_invoke.method;
2701 else
2702 return NULL;
2703 default:
2704 return NULL;
2705 }
2706 }
2707
2708 /*
2709 * mono_marshal_get_wrapper_info:
2710 *
2711 * Retrieve the WrapperInfo structure associated with WRAPPER.
2712 */
2713 WrapperInfo*
2714 mono_marshal_get_wrapper_info (MonoMethod *wrapper)
2715 {
2716 g_assert (wrapper->wrapper_type);
2717
2718 return (WrapperInfo *)mono_method_get_wrapper_data (wrapper, 1);
2719 }
2720
2721 /*
2722 * mono_marshal_set_wrapper_info:
2723 *
2724 * Set the WrapperInfo structure associated with the wrapper
2725 * method METHOD to INFO.
2726 */
2727 void
2728 mono_marshal_set_wrapper_info (MonoMethod *method, WrapperInfo *info)
2729 {
2730 void **datav;
2731 /* assert */
2732 if (method->wrapper_type == MONO_WRAPPER_NONE || method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD)
2733 return;
2734
2735 datav = (void **)((MonoMethodWrapper *)method)->method_data;
2736 datav [1] = info;
2737 }
2738
2739 WrapperInfo*
2740 mono_wrapper_info_create (MonoMethodBuilder *mb, WrapperSubtype subtype)
2741 {
2742 WrapperInfo *info;
2743
2744 info = (WrapperInfo *)mono_image_alloc0 (mb->method->klass->image, sizeof (WrapperInfo));
2745 info->subtype = subtype;
2746 return info;
2747 }
2748
2749 /*
2750 * get_wrapper_target_class:
2751 *
2752 * Return the class where a wrapper method should be placed.
2753 */
2754 static MonoClass*
2755 get_wrapper_target_class (MonoImage *image)
2756 {
2757 MonoError error;
2758 MonoClass *klass;
2759
2760 /*
2761 * Notes:
2762 * - can't put all wrappers into an mscorlib class, because they reference
2763 * metadata (signature) so they should be put into the same image as the
2764 * method they wrap, so they are unloaded together.
2765 * - putting them into a class with a type initalizer could cause the
2766 * initializer to be executed which can be a problem if the wrappers are
2767 * shared.
2768 * - putting them into an inflated class can cause problems if the the
2769 * class is deleted because it references an image which is unloaded.
2770 * To avoid these problems, we put the wrappers into the <Module> class of
2771 * the image.
2772 */
2773 if (image_is_dynamic (image)) {
2774 klass = ((MonoDynamicImage*)image)->wrappers_type;
2775 } else {
2776 klass = mono_class_get_checked (image, mono_metadata_make_token (MONO_TABLE_TYPEDEF, 1), &error);
2777 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
2778 }
2779 g_assert (klass);
2780
2781 return klass;
2782 }
2783
2784 /*
2785 * Wrappers for generic methods should be instances of generic wrapper methods, i.e .the wrapper for Sort<int> should be
2786 * an instance of the wrapper for Sort<T>. This is required for full-aot to work.
2787 */
2788
2789 /*
2790 * check_generic_wrapper_cache:
2791 *
2792 * Check CACHE for the wrapper of the generic instance ORIG_METHOD, and return it if it is found.
2793 * KEY should be the key for ORIG_METHOD in the cache, while DEF_KEY should be the key of its
2794 * generic method definition.
2795 */
2796 static MonoMethod*
2797 check_generic_wrapper_cache (GHashTable *cache, MonoMethod *orig_method, gpointer key, gpointer def_key)
2798 {
2799 MonoMethod *res;
2800 MonoMethod *inst, *def;
2801 MonoGenericContext *ctx;
2802
2803 g_assert (orig_method->is_inflated);
2804 ctx = mono_method_get_context (orig_method);
2805
2806 /*
2807 * Look for the instance
2808 */
2809 res = mono_marshal_find_in_cache (cache, key);
2810 if (res)
2811 return res;
2812
2813 /*
2814 * Look for the definition
2815 */
2816 def = mono_marshal_find_in_cache (cache, def_key);
2817 if (def) {
2818 MonoError error;
2819 inst = mono_class_inflate_generic_method_checked (def, ctx, &error);
2820 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
2821 /* Cache it */
2822 mono_memory_barrier ();
2823 mono_marshal_lock ();
2824 res = (MonoMethod *)g_hash_table_lookup (cache, key);
2825 if (!res) {
2826 g_hash_table_insert (cache, key, inst);
2827 res = inst;
2828 }
2829 mono_marshal_unlock ();
2830 return res;
2831 }
2832 return NULL;
2833 }
2834
2835 static MonoMethod*
2836 cache_generic_wrapper (GHashTable *cache, MonoMethod *orig_method, MonoMethod *def, MonoGenericContext *ctx, gpointer key)
2837 {
2838 MonoError error;
2839 MonoMethod *inst, *res;
2840
2841 /*
2842 * We use the same cache for the generic definition and the instances.
2843 */
2844 inst = mono_class_inflate_generic_method_checked (def, ctx, &error);
2845 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
2846 mono_memory_barrier ();
2847 mono_marshal_lock ();
2848 res = (MonoMethod *)g_hash_table_lookup (cache, key);
2849 if (!res) {
2850 g_hash_table_insert (cache, key, inst);
2851 res = inst;
2852 }
2853 mono_marshal_unlock ();
2854 return res;
2855 }
2856
2857 static MonoMethod*
2858 check_generic_delegate_wrapper_cache (GHashTable *cache, MonoMethod *orig_method, MonoMethod *def_method, MonoGenericContext *ctx)
2859 {
2860 MonoError error;
2861 MonoMethod *res;
2862 MonoMethod *inst, *def;
2863
2864 /*
2865 * Look for the instance
2866 */
2867 res = mono_marshal_find_in_cache (cache, orig_method->klass);
2868 if (res)
2869 return res;
2870
2871 /*
2872 * Look for the definition
2873 */
2874 def = mono_marshal_find_in_cache (cache, def_method->klass);
2875 if (def) {
2876 inst = mono_class_inflate_generic_method_checked (def, ctx, &error);
2877 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
2878
2879 /* Cache it */
2880 mono_memory_barrier ();
2881 mono_marshal_lock ();
2882 res = (MonoMethod *)g_hash_table_lookup (cache, orig_method->klass);
2883 if (!res) {
2884 g_hash_table_insert (cache, orig_method->klass, inst);
2885 res = inst;
2886 }
2887 mono_marshal_unlock ();
2888 return res;
2889 }
2890 return NULL;
2891 }
2892
2893 static MonoMethod*
2894 cache_generic_delegate_wrapper (GHashTable *cache, MonoMethod *orig_method, MonoMethod *def, MonoGenericContext *ctx)
2895 {
2896 MonoError error;
2897 MonoMethod *inst, *res;
2898
2899 /*
2900 * We use the same cache for the generic definition and the instances.
2901 */
2902 inst = mono_class_inflate_generic_method_checked (def, ctx, &error);
2903 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
2904
2905 mono_memory_barrier ();
2906 mono_marshal_lock ();
2907 res = (MonoMethod *)g_hash_table_lookup (cache, orig_method->klass);
2908 if (!res) {
2909 g_hash_table_insert (cache, orig_method->klass, inst);
2910 res = inst;
2911 }
2912 mono_marshal_unlock ();
2913 return res;
2914 }
2915
2916 MonoMethod *
2917 mono_marshal_get_delegate_begin_invoke (MonoMethod *method)
2918 {
2919 MonoMethodSignature *sig;
2920 MonoMethodBuilder *mb;
2921 MonoMethod *res;
2922 GHashTable *cache;
2923 int params_var;
2924 char *name;
2925 MonoGenericContext *ctx = NULL;
2926 MonoMethod *orig_method = NULL;
2927
2928 g_assert (method && method->klass->parent == mono_defaults.multicastdelegate_class &&
2929 !strcmp (method->name, "BeginInvoke"));
2930
2931 /*
2932 * For generic delegates, create a generic wrapper, and returns an instance to help AOT.
2933 */
2934 if (method->is_inflated) {
2935 orig_method = method;
2936 ctx = &((MonoMethodInflated*)method)->context;
2937 method = ((MonoMethodInflated*)method)->declaring;
2938 }
2939
2940 sig = mono_signature_no_pinvoke (method);
2941
2942 /*
2943 * Check cache
2944 */
2945 if (ctx) {
2946 cache = get_cache (&((MonoMethodInflated*)orig_method)->owner->wrapper_caches.delegate_begin_invoke_cache, mono_aligned_addr_hash, NULL);
2947 res = check_generic_delegate_wrapper_cache (cache, orig_method, method, ctx);
2948 if (res)
2949 return res;
2950 } else {
2951 cache = get_cache (&method->klass->image->wrapper_caches.delegate_begin_invoke_cache,
2952 (GHashFunc)mono_signature_hash,
2953 (GCompareFunc)mono_metadata_signature_equal);
2954 if ((res = mono_marshal_find_in_cache (cache, sig)))
2955 return res;
2956 }
2957
2958 g_assert (sig->hasthis);
2959
2960 name = mono_signature_to_name (sig, "begin_invoke");
2961 if (ctx)
2962 mb = mono_mb_new (method->klass, name, MONO_WRAPPER_DELEGATE_BEGIN_INVOKE);
2963 else
2964 mb = mono_mb_new (get_wrapper_target_class (method->klass->image), name, MONO_WRAPPER_DELEGATE_BEGIN_INVOKE);
2965 g_free (name);
2966
2967 #ifndef DISABLE_JIT
2968 params_var = mono_mb_emit_save_args (mb, sig, FALSE);
2969
2970 mono_mb_emit_ldarg (mb, 0);
2971 mono_mb_emit_ldloc (mb, params_var);
2972 mono_mb_emit_icall (mb, mono_delegate_begin_invoke);
2973 mono_mb_emit_byte (mb, CEE_RET);
2974 #endif
2975
2976 if (ctx) {
2977 MonoMethod *def;
2978 def = mono_mb_create_and_cache (cache, method->klass, mb, sig, sig->param_count + 16);
2979 res = cache_generic_delegate_wrapper (cache, orig_method, def, ctx);
2980 } else {
2981 res = mono_mb_create_and_cache (cache, sig, mb, sig, sig->param_count + 16);
2982 }
2983
2984 mono_mb_free (mb);
2985 return res;
2986 }
2987
2988 /* This is a JIT icall, it sets the pending exception and returns NULL on error. */
2989 static MonoObject *
2990 mono_delegate_end_invoke (MonoDelegate *delegate, gpointer *params)
2991 {
2992 MonoError error;
2993 MonoDomain *domain = mono_domain_get ();
2994 MonoAsyncResult *ares;
2995 MonoMethod *method = NULL;
2996 MonoMethodSignature *sig;
2997 MonoMethodMessage *msg;
2998 MonoObject *res, *exc;
2999 MonoArray *out_args;
3000 MonoClass *klass;
3001
3002 g_assert (delegate);
3003
3004 if (!delegate->method_info) {
3005 g_assert (delegate->method);
3006 MonoReflectionMethod *rm = mono_method_get_object_checked (domain, delegate->method, NULL, &error);
3007 if (!mono_error_ok (&error)) {
3008 mono_error_set_pending_exception (&error);
3009 return NULL;
3010 }
3011 MONO_OBJECT_SETREF (delegate, method_info, rm);
3012 }
3013
3014 if (!delegate->method_info || !delegate->method_info->method)
3015 g_assert_not_reached ();
3016
3017 klass = delegate->object.vtable->klass;
3018
3019 method = mono_class_get_method_from_name (klass, "EndInvoke", -1);
3020 g_assert (method != NULL);
3021
3022 sig = mono_signature_no_pinvoke (method);
3023
3024 msg = mono_method_call_message_new (method, params, NULL, NULL, NULL, &error);
3025 if (mono_error_set_pending_exception (&error))
3026 return NULL;
3027
3028 ares = (MonoAsyncResult *)mono_array_get (msg->args, gpointer, sig->param_count - 1);
3029 if (ares == NULL) {
3030 mono_set_pending_exception (mono_exception_from_name_msg (mono_defaults.corlib, "System.Runtime.Remoting", "RemotingException", "The async result object is null or of an unexpected type."));
3031 return NULL;
3032 }
3033
3034 if (ares->async_delegate != (MonoObject*)delegate) {
3035 mono_set_pending_exception (mono_get_exception_invalid_operation (
3036 "The IAsyncResult object provided does not match this delegate."));
3037 return NULL;
3038 }
3039
3040 #ifndef DISABLE_REMOTING
3041 if (delegate->target && mono_object_is_transparent_proxy (delegate->target)) {
3042 MonoTransparentProxy* tp = (MonoTransparentProxy *)delegate->target;
3043 msg = (MonoMethodMessage *)mono_object_new_checked (domain, mono_defaults.mono_method_message_class, &error);
3044 if (!mono_error_ok (&error)) {
3045 mono_error_set_pending_exception (&error);
3046 return NULL;
3047 }
3048 mono_message_init (domain, msg, delegate->method_info, NULL, &error);
3049 if (mono_error_set_pending_exception (&error))
3050 return NULL;
3051 msg->call_type = CallType_EndInvoke;
3052 MONO_OBJECT_SETREF (msg, async_result, ares);
3053 res = mono_remoting_invoke ((MonoObject *)tp->rp, msg, &exc, &out_args, &error);
3054 if (!mono_error_ok (&error)) {
3055 mono_error_set_pending_exception (&error);
3056 return NULL;
3057 }
3058 } else
3059 #endif
3060 {
3061 res = mono_threadpool_ms_end_invoke (ares, &out_args, &exc, &error);
3062 if (mono_error_set_pending_exception (&error))
3063 return NULL;
3064 }
3065
3066 if (exc) {
3067 if (((MonoException*)exc)->stack_trace) {
3068 MonoError inner_error;
3069 char *strace = mono_string_to_utf8_checked (((MonoException*)exc)->stack_trace, &inner_error);
3070 if (is_ok (&inner_error)) {
3071 char *tmp;
3072 tmp = g_strdup_printf ("%s\nException Rethrown at:\n", strace);
3073 g_free (strace);
3074 MONO_OBJECT_SETREF (((MonoException*)exc), stack_trace, mono_string_new (domain, tmp));
3075 g_free (tmp);
3076 } else
3077 mono_error_cleanup (&inner_error); /* no stack trace, but at least throw the original exception */
3078 }
3079 mono_set_pending_exception ((MonoException*)exc);
3080 }
3081
3082 mono_method_return_message_restore (method, params, out_args, &error);
3083 mono_error_set_pending_exception (&error);
3084 return res;
3085 }
3086
3087 #ifndef DISABLE_JIT
3088
3089 void
3090 mono_mb_emit_restore_result (MonoMethodBuilder *mb, MonoType *return_type)
3091 {
3092 MonoType *t = mono_type_get_underlying_type (return_type);
3093
3094 if (return_type->byref)
3095 return_type = &mono_defaults.int_class->byval_arg;
3096
3097 switch (t->type) {
3098 case MONO_TYPE_VOID:
3099 g_assert_not_reached ();
3100 break;
3101 case MONO_TYPE_PTR:
3102 case MONO_TYPE_STRING:
3103 case MONO_TYPE_CLASS:
3104 case MONO_TYPE_OBJECT:
3105 case MONO_TYPE_ARRAY:
3106 case MONO_TYPE_SZARRAY:
3107 /* nothing to do */
3108 break;
3109 case MONO_TYPE_U1:
3110 case MONO_TYPE_BOOLEAN:
3111 case MONO_TYPE_I1:
3112 case MONO_TYPE_U2:
3113 case MONO_TYPE_CHAR:
3114 case MONO_TYPE_I2:
3115 case MONO_TYPE_I:
3116 case MONO_TYPE_U:
3117 case MONO_TYPE_I4:
3118 case MONO_TYPE_U4:
3119 case MONO_TYPE_U8:
3120 case MONO_TYPE_I8:
3121 case MONO_TYPE_R4:
3122 case MONO_TYPE_R8:
3123 mono_mb_emit_op (mb, CEE_UNBOX, mono_class_from_mono_type (return_type));
3124 mono_mb_emit_byte (mb, mono_type_to_ldind (return_type));
3125 break;
3126 case MONO_TYPE_GENERICINST:
3127 if (!mono_type_generic_inst_is_valuetype (t))
3128 break;
3129 /* fall through */
3130 case MONO_TYPE_VALUETYPE: {
3131 MonoClass *klass = mono_class_from_mono_type (return_type);
3132 mono_mb_emit_op (mb, CEE_UNBOX, klass);
3133 mono_mb_emit_op (mb, CEE_LDOBJ, klass);
3134 break;
3135 }
3136 case MONO_TYPE_VAR:
3137 case MONO_TYPE_MVAR: {
3138 MonoClass *klass = mono_class_from_mono_type (return_type);
3139 mono_mb_emit_op (mb, CEE_UNBOX_ANY, klass);
3140 break;
3141 }
3142 default:
3143 g_warning ("type 0x%x not handled", return_type->type);
3144 g_assert_not_reached ();
3145 }
3146
3147 mono_mb_emit_byte (mb, CEE_RET);
3148 }
3149
3150 #endif /* DISABLE_JIT */
3151
3152 MonoMethod *
3153 mono_marshal_get_delegate_end_invoke (MonoMethod *method)
3154 {
3155 MonoMethodSignature *sig;
3156 MonoMethodBuilder *mb;
3157 MonoMethod *res;
3158 GHashTable *cache;
3159 int params_var;
3160 char *name;
3161 MonoGenericContext *ctx = NULL;
3162 MonoMethod *orig_method = NULL;
3163
3164 g_assert (method && method->klass->parent == mono_defaults.multicastdelegate_class &&
3165 !strcmp (method->name, "EndInvoke"));
3166
3167 /*
3168 * For generic delegates, create a generic wrapper, and returns an instance to help AOT.
3169 */
3170 if (method->is_inflated) {
3171 orig_method = method;
3172 ctx = &((MonoMethodInflated*)method)->context;
3173 method = ((MonoMethodInflated*)method)->declaring;
3174 }
3175
3176 sig = mono_signature_no_pinvoke (method);
3177
3178 /*
3179 * Check cache
3180 */
3181 if (ctx) {
3182 cache = get_cache (&((MonoMethodInflated*)orig_method)->owner->wrapper_caches.delegate_end_invoke_cache, mono_aligned_addr_hash, NULL);
3183 res = check_generic_delegate_wrapper_cache (cache, orig_method, method, ctx);
3184 if (res)
3185 return res;
3186 } else {
3187 cache = get_cache (&method->klass->image->wrapper_caches.delegate_end_invoke_cache,
3188 (GHashFunc)mono_signature_hash,
3189 (GCompareFunc)mono_metadata_signature_equal);
3190 if ((res = mono_marshal_find_in_cache (cache, sig)))
3191 return res;
3192 }
3193
3194 g_assert (sig->hasthis);
3195
3196 name = mono_signature_to_name (sig, "end_invoke");
3197 if (ctx)
3198 mb = mono_mb_new (method->klass, name, MONO_WRAPPER_DELEGATE_END_INVOKE);
3199 else
3200 mb = mono_mb_new (get_wrapper_target_class (method->klass->image), name, MONO_WRAPPER_DELEGATE_END_INVOKE);
3201 g_free (name);
3202
3203 #ifndef DISABLE_JIT
3204 params_var = mono_mb_emit_save_args (mb, sig, FALSE);
3205
3206 mono_mb_emit_ldarg (mb, 0);
3207 mono_mb_emit_ldloc (mb, params_var);
3208 mono_mb_emit_icall (mb, mono_delegate_end_invoke);
3209
3210 if (sig->ret->type == MONO_TYPE_VOID) {
3211 mono_mb_emit_byte (mb, CEE_POP);
3212 mono_mb_emit_byte (mb, CEE_RET);
3213 } else
3214 mono_mb_emit_restore_result (mb, sig->ret);
3215 #endif
3216
3217 if (ctx) {
3218 MonoMethod *def;
3219 def = mono_mb_create_and_cache (cache, method->klass, mb, sig, sig->param_count + 16);
3220 res = cache_generic_delegate_wrapper (cache, orig_method, def, ctx);
3221 } else {
3222 res = mono_mb_create_and_cache (cache, sig,
3223 mb, sig, sig->param_count + 16);
3224 }
3225 mono_mb_free (mb);
3226
3227 return res;
3228 }
3229
3230 typedef struct
3231 {
3232 MonoMethodSignature *sig;
3233 gpointer pointer;
3234 } SignaturePointerPair;
3235
3236 static guint
3237 signature_pointer_pair_hash (gconstpointer data)
3238 {
3239 SignaturePointerPair *pair = (SignaturePointerPair*)data;
3240
3241 return mono_signature_hash (pair->sig) ^ mono_aligned_addr_hash (pair->pointer);
3242 }
3243
3244 static gboolean
3245 signature_pointer_pair_equal (gconstpointer data1, gconstpointer data2)
3246 {
3247 SignaturePointerPair *pair1 = (SignaturePointerPair*) data1, *pair2 = (SignaturePointerPair*) data2;
3248 return mono_metadata_signature_equal (pair1->sig, pair2->sig) && (pair1->pointer == pair2->pointer);
3249 }
3250
3251 static gboolean
3252 signature_pointer_pair_matches_pointer (gpointer key, gpointer value, gpointer user_data)
3253 {
3254 SignaturePointerPair *pair = (SignaturePointerPair*)key;
3255
3256 return pair->pointer == user_data;
3257 }
3258
3259 static void
3260 free_signature_pointer_pair (SignaturePointerPair *pair)
3261 {
3262 g_free (pair);
3263 }
3264
3265 MonoMethod *
3266 mono_marshal_get_delegate_invoke_internal (MonoMethod *method, gboolean callvirt, gboolean static_method_with_first_arg_bound, MonoMethod *target_method)
3267 {
3268 MonoMethodSignature *sig, *static_sig, *invoke_sig;
3269 int i;
3270 MonoMethodBuilder *mb;
3271 MonoMethod *res;
3272 GHashTable *cache;
3273 gpointer cache_key = NULL;
3274 SignaturePointerPair key;
3275 SignaturePointerPair *new_key;
3276 int local_i, local_len, local_delegates, local_d, local_target, local_res;
3277 int pos0, pos1, pos2;
3278 char *name;
3279 MonoClass *target_class = NULL;
3280 gboolean closed_over_null = FALSE;
3281 MonoGenericContext *ctx = NULL;
3282 MonoGenericContainer *container = NULL;
3283 MonoMethod *orig_method = method;
3284 WrapperInfo *info;
3285 WrapperSubtype subtype = WRAPPER_SUBTYPE_NONE;
3286 gboolean found;
3287 gboolean void_ret;
3288
3289 g_assert (method && method->klass->parent == mono_defaults.multicastdelegate_class &&
3290 !strcmp (method->name, "Invoke"));
3291
3292 invoke_sig = sig = mono_signature_no_pinvoke (method);
3293
3294 /*
3295 * If the delegate target is null, and the target method is not static, a virtual
3296 * call is made to that method with the first delegate argument as this. This is
3297 * a non-documented .NET feature.
3298 */
3299 if (callvirt) {
3300 subtype = WRAPPER_SUBTYPE_DELEGATE_INVOKE_VIRTUAL;
3301 if (target_method->is_inflated) {
3302 MonoError error;
3303 MonoType *target_type;
3304
3305 g_assert (method->signature->hasthis);
3306 target_type = mono_class_inflate_generic_type_checked (method->signature->params [0],
3307 mono_method_get_context (method), &error);
3308 mono_error_assert_ok (&error); /* FIXME don't swallow the error */
3309 target_class = mono_class_from_mono_type (target_type);
3310 } else {
3311 target_class = target_method->klass;
3312 }
3313
3314 closed_over_null = sig->param_count == mono_method_signature (target_method)->param_count;
3315 }
3316
3317 if (static_method_with_first_arg_bound) {
3318 subtype = WRAPPER_SUBTYPE_DELEGATE_INVOKE_BOUND;
3319 g_assert (!callvirt);
3320 invoke_sig = mono_method_signature (target_method);
3321 }
3322
3323 /*
3324 * For generic delegates, create a generic wrapper, and return an instance to help AOT.
3325 */
3326 if (method->is_inflated && subtype == WRAPPER_SUBTYPE_NONE) {
3327 ctx = &((MonoMethodInflated*)method)->context;
3328 method = ((MonoMethodInflated*)method)->declaring;
3329
3330 container = mono_method_get_generic_container (method);
3331 if (!container)
3332 container = method->klass->generic_container;
3333 g_assert (container);
3334
3335 invoke_sig = sig = mono_signature_no_pinvoke (method);
3336 }
3337
3338 /*
3339 * Check cache
3340 */
3341 if (ctx) {
3342 cache = get_cache (&((MonoMethodInflated*)orig_method)->owner->wrapper_caches.delegate_invoke_cache, mono_aligned_addr_hash, NULL);
3343 res = check_generic_delegate_wrapper_cache (cache, orig_method, method, ctx);
3344 if (res)
3345 return res;
3346 cache_key = method->klass;
3347 } else if (static_method_with_first_arg_bound) {
3348 cache = get_cache (&method->klass->image->delegate_bound_static_invoke_cache,
3349 (GHashFunc)mono_signature_hash,
3350 (GCompareFunc)mono_metadata_signature_equal);
3351 /*
3352 * The wrapper is based on sig+invoke_sig, but sig can be derived from invoke_sig.
3353 */
3354 res = mono_marshal_find_in_cache (cache, invoke_sig);
3355 if (res)
3356 return res;
3357 cache_key = invoke_sig;
3358 } else if (callvirt) {
3359 GHashTable **cache_ptr;
3360
3361 cache_ptr = &mono_method_get_wrapper_cache (method)->delegate_abstract_invoke_cache;
3362
3363 /* We need to cache the signature+method pair */
3364 mono_marshal_lock ();
3365 if (!*cache_ptr)
3366 *cache_ptr = g_hash_table_new_full (signature_pointer_pair_hash, (GEqualFunc)signature_pointer_pair_equal, (GDestroyNotify)free_signature_pointer_pair, NULL);
3367 cache = *cache_ptr;
3368 key.sig = invoke_sig;
3369 key.pointer = target_method;
3370 res = (MonoMethod *)g_hash_table_lookup (cache, &key);
3371 mono_marshal_unlock ();
3372 if (res)
3373 return res;
3374 } else {
3375 // Inflated methods should not be in this cache because it's not stored on the imageset.
3376 g_assert (!method->is_inflated);
3377 cache = get_cache (&method->klass->image->wrapper_caches.delegate_invoke_cache,
3378 (GHashFunc)mono_signature_hash,
3379 (GCompareFunc)mono_metadata_signature_equal);
3380 res = mono_marshal_find_in_cache (cache, sig);
3381 if (res)
3382 return res;
3383 cache_key = sig;
3384 }
3385
3386 static_sig = mono_metadata_signature_dup_full (method->klass->image, sig);
3387 static_sig->hasthis = 0;
3388 if (!static_method_with_first_arg_bound)
3389 invoke_sig = static_sig;
3390
3391 if (static_method_with_first_arg_bound)
3392 name = mono_signature_to_name (invoke_sig, "invoke_bound");
3393 else if (closed_over_null)
3394 name = mono_signature_to_name (invoke_sig, "invoke_closed_over_null");
3395 else if (callvirt)
3396 name = mono_signature_to_name (invoke_sig, "invoke_callvirt");
3397 else
3398 name = mono_signature_to_name (invoke_sig, "invoke");
3399 if (ctx)
3400 mb = mono_mb_new (method->klass, name, MONO_WRAPPER_DELEGATE_INVOKE);
3401 else
3402 mb = mono_mb_new (get_wrapper_target_class (method->klass->image), name, MONO_WRAPPER_DELEGATE_INVOKE);
3403 g_free (name);
3404
3405 #ifndef DISABLE_JIT
3406 void_ret = sig->ret->type == MONO_TYPE_VOID && !method->string_ctor;
3407
3408 /* allocate local 0 (object) */
3409 local_i = mono_mb_add_local (mb, &mono_defaults.int32_class->byval_arg);
3410 local_len = mono_mb_add_local (mb, &mono_defaults.int32_class->byval_arg);
3411 local_delegates = mono_mb_add_local (mb, &mono_defaults.array_class->byval_arg);
3412 local_d = mono_mb_add_local (mb, &mono_defaults.multicastdelegate_class->byval_arg);
3413 local_target = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
3414
3415 if (!void_ret)
3416 local_res = mono_mb_add_local (mb, &mono_class_from_mono_type (sig->ret)->byval_arg);
3417
3418 g_assert (sig->hasthis);
3419
3420 /*
3421 * {type: sig->ret} res;
3422 * if (delegates == null) {
3423 * return this.<target> ( args .. );
3424 * } else {
3425 * int i = 0, len = this.delegates.Length;
3426 * do {
3427 * res = this.delegates [i].Invoke ( args .. );
3428 * } while (++i < len);
3429 * return res;
3430 * }
3431 */
3432
3433 /* this wrapper can be used in unmanaged-managed transitions */
3434 emit_thread_interrupt_checkpoint (mb);
3435
3436 /* delegates = this.delegates */
3437 mono_mb_emit_ldarg (mb, 0);
3438 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoMulticastDelegate, delegates));
3439 mono_mb_emit_byte (mb, CEE_LDIND_REF);
3440 mono_mb_emit_stloc (mb, local_delegates);
3441
3442 /* if (delegates == null) */
3443 mono_mb_emit_ldloc (mb, local_delegates);
3444 pos2 = mono_mb_emit_branch (mb, CEE_BRTRUE);
3445
3446 /* return target.<target_method|method_ptr> ( args .. ); */
3447
3448 /* target = d.target; */
3449 mono_mb_emit_ldarg (mb, 0);
3450 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoDelegate, target));
3451 mono_mb_emit_byte (mb, CEE_LDIND_REF);
3452 mono_mb_emit_stloc (mb, local_target);
3453
3454 /*static methods with bound first arg can have null target and still be bound*/
3455 if (!static_method_with_first_arg_bound) {
3456 /* if target != null */
3457 mono_mb_emit_ldloc (mb, local_target);
3458 pos0 = mono_mb_emit_branch (mb, CEE_BRFALSE);
3459
3460 /* then call this->method_ptr nonstatic */
3461 if (callvirt) {
3462 // FIXME:
3463 mono_mb_emit_exception_full (mb, "System", "NotImplementedException", "");
3464 } else {
3465 mono_mb_emit_ldloc (mb, local_target);
3466 for (i = 0; i < sig->param_count; ++i)
3467 mono_mb_emit_ldarg (mb, i + 1);
3468 mono_mb_emit_ldarg (mb, 0);
3469 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoDelegate, extra_arg));
3470 mono_mb_emit_byte (mb, CEE_LDIND_I);
3471 mono_mb_emit_ldarg (mb, 0);
3472 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoDelegate, method_ptr));
3473 mono_mb_emit_byte (mb, CEE_LDIND_I);
3474 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
3475 mono_mb_emit_op (mb, CEE_MONO_CALLI_EXTRA_ARG, sig);
3476 mono_mb_emit_byte (mb, CEE_RET);
3477 }
3478
3479 /* else [target == null] call this->method_ptr static */
3480 mono_mb_patch_branch (mb, pos0);
3481 }
3482
3483 if (callvirt) {
3484 if (!closed_over_null) {
3485 if (target_class->valuetype) {
3486 mono_mb_emit_ldarg (mb, 1);
3487 for (i = 1; i < sig->param_count; ++i)
3488 mono_mb_emit_ldarg (mb, i + 1);
3489 mono_mb_emit_op (mb, CEE_CALL, target_method);
3490 } else {
3491 mono_mb_emit_ldarg (mb, 1);
3492 mono_mb_emit_op (mb, CEE_CASTCLASS, target_class);
3493 for (i = 1; i < sig->param_count; ++i)
3494 mono_mb_emit_ldarg (mb, i + 1);
3495 mono_mb_emit_op (mb, CEE_CALLVIRT, target_method);
3496 }
3497 } else {
3498 mono_mb_emit_byte (mb, CEE_LDNULL);
3499 for (i = 0; i < sig->param_count; ++i)
3500 mono_mb_emit_ldarg (mb, i + 1);
3501 mono_mb_emit_op (mb, CEE_CALL, target_method);
3502 }
3503 } else {
3504 if (static_method_with_first_arg_bound) {
3505 mono_mb_emit_ldloc (mb, local_target);
3506 if (!MONO_TYPE_IS_REFERENCE (invoke_sig->params[0]))
3507 mono_mb_emit_op (mb, CEE_UNBOX_ANY, mono_class_from_mono_type (invoke_sig->params[0]));
3508 }
3509 for (i = 0; i < sig->param_count; ++i)
3510 mono_mb_emit_ldarg (mb, i + 1);
3511 mono_mb_emit_ldarg (mb, 0);
3512 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoDelegate, extra_arg));
3513 mono_mb_emit_byte (mb, CEE_LDIND_I);
3514 mono_mb_emit_ldarg (mb, 0);
3515 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoDelegate, method_ptr));
3516 mono_mb_emit_byte (mb, CEE_LDIND_I);
3517 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
3518 mono_mb_emit_op (mb, CEE_MONO_CALLI_EXTRA_ARG, invoke_sig);
3519 }
3520
3521 mono_mb_emit_byte (mb, CEE_RET);
3522
3523 /* else [delegates != null] */
3524 mono_mb_patch_branch (mb, pos2);
3525
3526 /* len = delegates.Length; */
3527 mono_mb_emit_ldloc (mb, local_delegates);
3528 mono_mb_emit_byte (mb, CEE_LDLEN);
3529 mono_mb_emit_byte (mb, CEE_CONV_I4);
3530 mono_mb_emit_stloc (mb, local_len);
3531
3532 /* i = 0; */
3533 mono_mb_emit_icon (mb, 0);
3534 mono_mb_emit_stloc (mb, local_i);
3535
3536 pos1 = mono_mb_get_label (mb);
3537
3538 /* d = delegates [i]; */
3539 mono_mb_emit_ldloc (mb, local_delegates);
3540 mono_mb_emit_ldloc (mb, local_i);
3541 mono_mb_emit_byte (mb, CEE_LDELEM_REF);
3542 mono_mb_emit_stloc (mb, local_d);
3543
3544 /* res = d.Invoke ( args .. ); */
3545 mono_mb_emit_ldloc (mb, local_d);
3546 for (i = 0; i < sig->param_count; i++)
3547 mono_mb_emit_ldarg (mb, i + 1);
3548 if (!ctx) {
3549 mono_mb_emit_op (mb, CEE_CALLVIRT, method);
3550 } else {
3551 MonoError error;
3552 mono_mb_emit_op (mb, CEE_CALLVIRT, mono_class_inflate_generic_method_checked (method, &container->context, &error));
3553 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
3554 }
3555 if (!void_ret)
3556 mono_mb_emit_stloc (mb, local_res);
3557
3558 /* i += 1 */
3559 mono_mb_emit_add_to_local (mb, local_i, 1);
3560
3561 /* i < l */
3562 mono_mb_emit_ldloc (mb, local_i);
3563 mono_mb_emit_ldloc (mb, local_len);
3564 mono_mb_emit_branch_label (mb, CEE_BLT, pos1);
3565
3566 /* return res */
3567 if (!void_ret)
3568 mono_mb_emit_ldloc (mb, local_res);
3569 mono_mb_emit_byte (mb, CEE_RET);
3570
3571 mb->skip_visibility = 1;
3572 #endif /* DISABLE_JIT */
3573
3574 info = mono_wrapper_info_create (mb, subtype);
3575 info->d.delegate_invoke.method = orig_method;
3576
3577 if (ctx) {
3578 MonoMethod *def;
3579
3580 def = mono_mb_create_and_cache_full (cache, cache_key, mb, sig, sig->param_count + 16, info, NULL);
3581 res = cache_generic_delegate_wrapper (cache, orig_method, def, ctx);
3582 } else if (callvirt) {
3583 new_key = g_new0 (SignaturePointerPair, 1);
3584 *new_key = key;
3585
3586 res = mono_mb_create_and_cache_full (cache, new_key, mb, sig, sig->param_count + 16, info, &found);
3587 if (found)
3588 g_free (new_key);
3589 } else {
3590 res = mono_mb_create_and_cache_full (cache, cache_key, mb, sig, sig->param_count + 16, info, NULL);
3591 }
3592 mono_mb_free (mb);
3593
3594 /* mono_method_print_code (res); */
3595
3596 return res;
3597 }
3598
3599 /*
3600 * the returned method invokes all methods in a multicast delegate.
3601 */
3602 MonoMethod *
3603 mono_marshal_get_delegate_invoke (MonoMethod *method, MonoDelegate *del)
3604 {
3605 gboolean callvirt = FALSE;
3606 gboolean static_method_with_first_arg_bound = FALSE;
3607 MonoMethod *target_method = NULL;
3608 MonoMethodSignature *sig;
3609
3610 sig = mono_signature_no_pinvoke (method);
3611
3612 if (del && !del->target && del->method && mono_method_signature (del->method)->hasthis) {
3613 callvirt = TRUE;
3614 target_method = del->method;
3615 }
3616
3617 if (del && del->method && mono_method_signature (del->method)->param_count == sig->param_count + 1 && (del->method->flags & METHOD_ATTRIBUTE_STATIC)) {
3618 static_method_with_first_arg_bound = TRUE;
3619 target_method = del->method;
3620 }
3621
3622 return mono_marshal_get_delegate_invoke_internal (method, callvirt, static_method_with_first_arg_bound, target_method);
3623 }
3624
3625 typedef struct {
3626 MonoMethodSignature *ctor_sig;
3627 MonoMethodSignature *sig;
3628 } CtorSigPair;
3629
3630 /* protected by the marshal lock, contains CtorSigPair pointers */
3631 static GSList *strsig_list = NULL;
3632
3633 static MonoMethodSignature *
3634 lookup_string_ctor_signature (MonoMethodSignature *sig)
3635 {
3636 MonoMethodSignature *callsig;
3637 CtorSigPair *cs;
3638 GSList *item;
3639
3640 mono_marshal_lock ();
3641 callsig = NULL;
3642 for (item = strsig_list; item; item = item->next) {
3643 cs = (CtorSigPair *)item->data;
3644 /* mono_metadata_signature_equal () is safe to call with the marshal lock
3645 * because it is lock-free.
3646 */
3647 if (mono_metadata_signature_equal (sig, cs->ctor_sig)) {
3648 callsig = cs->sig;
3649 break;
3650 }
3651 }
3652 mono_marshal_unlock ();
3653 return callsig;
3654 }
3655
3656 static MonoMethodSignature *
3657 add_string_ctor_signature (MonoMethod *method)
3658 {
3659 MonoMethodSignature *callsig;
3660 CtorSigPair *cs;
3661
3662 callsig = mono_metadata_signature_dup_full (method->klass->image, mono_method_signature (method));
3663 callsig->ret = &mono_defaults.string_class->byval_arg;
3664 cs = g_new (CtorSigPair, 1);
3665 cs->sig = callsig;
3666 cs->ctor_sig = mono_method_signature (method);
3667
3668 mono_marshal_lock ();
3669 strsig_list = g_slist_prepend (strsig_list, cs);
3670 mono_marshal_unlock ();
3671 return callsig;
3672 }
3673
3674 /*
3675 * mono_marshal_get_string_ctor_signature:
3676 *
3677 * Return the modified signature used by string ctors (they return the newly created
3678 * string).
3679 */
3680 MonoMethodSignature*
3681 mono_marshal_get_string_ctor_signature (MonoMethod *method)
3682 {
3683 MonoMethodSignature *sig = lookup_string_ctor_signature (mono_method_signature (method));
3684 if (!sig)
3685 sig = add_string_ctor_signature (method);
3686
3687 return sig;
3688 }
3689
3690 static MonoType*
3691 get_runtime_invoke_type (MonoType *t, gboolean ret)
3692 {
3693 if (t->byref) {
3694 if (t->type == MONO_TYPE_GENERICINST && mono_class_is_nullable (mono_class_from_mono_type (t)))
3695 return t;
3696 /* Can't share this with 'I' as that needs another indirection */
3697 return &mono_defaults.int_class->this_arg;
3698 }
3699
3700 if (MONO_TYPE_IS_REFERENCE (t))
3701 return &mono_defaults.object_class->byval_arg;
3702
3703 if (ret)
3704 /* The result needs to be boxed */
3705 return t;
3706
3707 handle_enum:
3708 switch (t->type) {
3709 /* Can't share these as the argument needs to be loaded using sign/zero extension */
3710 /*
3711 case MONO_TYPE_U1:
3712 return &mono_defaults.sbyte_class->byval_arg;
3713 case MONO_TYPE_U2:
3714 return &mono_defaults.int16_class->byval_arg;
3715 case MONO_TYPE_U4:
3716 return &mono_defaults.int32_class->byval_arg;
3717 */
3718 case MONO_TYPE_U8:
3719 return &mono_defaults.int64_class->byval_arg;
3720 case MONO_TYPE_BOOLEAN:
3721 return &mono_defaults.byte_class->byval_arg;
3722 case MONO_TYPE_CHAR:
3723 return &mono_defaults.uint16_class->byval_arg;
3724 case MONO_TYPE_U:
3725 return &mono_defaults.int_class->byval_arg;
3726 case MONO_TYPE_VALUETYPE:
3727 if (t->data.klass->enumtype) {
3728 t = mono_class_enum_basetype (t->data.klass);
3729 goto handle_enum;
3730 }
3731 return t;
3732 default:
3733 return t;
3734 }
3735 }
3736
3737 /*
3738 * mono_marshal_get_runtime_invoke_sig:
3739 *
3740 * Return a common signature used for sharing runtime invoke wrappers.
3741 */
3742 static MonoMethodSignature*
3743 mono_marshal_get_runtime_invoke_sig (MonoMethodSignature *sig)
3744 {
3745 MonoMethodSignature *res = mono_metadata_signature_dup (sig);
3746 int i;
3747
3748 res->generic_param_count = 0;
3749 res->ret = get_runtime_invoke_type (sig->ret, TRUE);
3750 for (i = 0; i < res->param_count; ++i)
3751 res->params [i] = get_runtime_invoke_type (sig->params [i], FALSE);
3752
3753 return res;
3754 }
3755
3756 static gboolean
3757 runtime_invoke_signature_equal (MonoMethodSignature *sig1, MonoMethodSignature *sig2)
3758 {
3759 /* Can't share wrappers which return a vtype since it needs to be boxed */
3760 if (sig1->ret != sig2->ret && !(MONO_TYPE_IS_REFERENCE (sig1->ret) && MONO_TYPE_IS_REFERENCE (sig2->ret)) && !mono_metadata_type_equal (sig1->ret, sig2->ret))
3761 return FALSE;
3762 else
3763 return mono_metadata_signature_equal (sig1, sig2);
3764 }
3765
3766 #ifndef DISABLE_JIT
3767
3768 /*
3769 * emit_invoke_call:
3770 *
3771 * Emit the call to the wrapper method from a runtime invoke wrapper.
3772 */
3773 static void
3774 emit_invoke_call (MonoMethodBuilder *mb, MonoMethod *method,
3775 MonoMethodSignature *sig, MonoMethodSignature *callsig,
3776 int loc_res,
3777 gboolean virtual_, gboolean need_direct_wrapper)
3778 {
3779 static MonoString *string_dummy = NULL;
3780 int i;
3781 int *tmp_nullable_locals;
3782 gboolean void_ret = FALSE;
3783 gboolean string_ctor = method && method->string_ctor;
3784
3785 /* to make it work with our special string constructors */
3786 if (!string_dummy) {
3787 MONO_GC_REGISTER_ROOT_SINGLE (string_dummy, MONO_ROOT_SOURCE_MARSHAL, "dummy marshal string");
3788 string_dummy = mono_string_new_wrapper ("dummy");
3789 }
3790
3791 if (virtual_) {
3792 g_assert (sig->hasthis);
3793 g_assert (method->flags & METHOD_ATTRIBUTE_VIRTUAL);
3794 }
3795
3796 if (sig->hasthis) {
3797 if (string_ctor) {
3798 if (mono_gc_is_moving ()) {
3799 mono_mb_emit_ptr (mb, &string_dummy);
3800 mono_mb_emit_byte (mb, CEE_LDIND_REF);
3801 } else {
3802 mono_mb_emit_ptr (mb, string_dummy);
3803 }
3804 } else {
3805 mono_mb_emit_ldarg (mb, 0);
3806 }
3807 }
3808
3809 tmp_nullable_locals = g_new0 (int, sig->param_count);
3810
3811 for (i = 0; i < sig->param_count; i++) {
3812 MonoType *t = sig->params [i];
3813 int type;
3814
3815 mono_mb_emit_ldarg (mb, 1);
3816 if (i) {
3817 mono_mb_emit_icon (mb, sizeof (gpointer) * i);
3818 mono_mb_emit_byte (mb, CEE_ADD);
3819 }
3820
3821 if (t->byref) {
3822 mono_mb_emit_byte (mb, CEE_LDIND_I);
3823 /* A Nullable<T> type don't have a boxed form, it's either null or a boxed T.
3824 * So to make this work we unbox it to a local variablee and push a reference to that.
3825 */
3826 if (t->type == MONO_TYPE_GENERICINST && mono_class_is_nullable (mono_class_from_mono_type (t))) {
3827 tmp_nullable_locals [i] = mono_mb_add_local (mb, &mono_class_from_mono_type (t)->byval_arg);
3828
3829 mono_mb_emit_op (mb, CEE_UNBOX_ANY, mono_class_from_mono_type (t));
3830 mono_mb_emit_stloc (mb, tmp_nullable_locals [i]);
3831 mono_mb_emit_ldloc_addr (mb, tmp_nullable_locals [i]);
3832 }
3833 continue;
3834 }
3835
3836 /*FIXME 'this doesn't handle generic enums. Shouldn't we?*/
3837 type = sig->params [i]->type;
3838 handle_enum:
3839 switch (type) {
3840 case MONO_TYPE_I1:
3841 case MONO_TYPE_BOOLEAN:
3842 case MONO_TYPE_U1:
3843 case MONO_TYPE_I2:
3844 case MONO_TYPE_U2:
3845 case MONO_TYPE_CHAR:
3846 case MONO_TYPE_I:
3847 case MONO_TYPE_U:
3848 case MONO_TYPE_I4:
3849 case MONO_TYPE_U4:
3850 case MONO_TYPE_R4:
3851 case MONO_TYPE_R8:
3852 case MONO_TYPE_I8:
3853 case MONO_TYPE_U8:
3854 mono_mb_emit_byte (mb, CEE_LDIND_I);
3855 mono_mb_emit_byte (mb, mono_type_to_ldind (sig->params [i]));
3856 break;
3857 case MONO_TYPE_STRING:
3858 case MONO_TYPE_CLASS:
3859 case MONO_TYPE_ARRAY:
3860 case MONO_TYPE_PTR:
3861 case MONO_TYPE_SZARRAY:
3862 case MONO_TYPE_OBJECT:
3863 mono_mb_emit_byte (mb, mono_type_to_ldind (sig->params [i]));
3864 break;
3865 case MONO_TYPE_GENERICINST:
3866 if (!mono_type_generic_inst_is_valuetype (sig->params [i])) {
3867 mono_mb_emit_byte (mb, mono_type_to_ldind (sig->params [i]));
3868 break;
3869 }
3870
3871 /* fall through */
3872 case MONO_TYPE_VALUETYPE:
3873 if (type == MONO_TYPE_VALUETYPE && t->data.klass->enumtype) {
3874 type = mono_class_enum_basetype (t->data.klass)->type;
3875 goto handle_enum;
3876 }
3877 mono_mb_emit_byte (mb, CEE_LDIND_I);
3878 if (mono_class_is_nullable (mono_class_from_mono_type (sig->params [i]))) {
3879 /* Need to convert a boxed vtype to an mp to a Nullable struct */
3880 mono_mb_emit_op (mb, CEE_UNBOX, mono_class_from_mono_type (sig->params [i]));
3881 mono_mb_emit_op (mb, CEE_LDOBJ, mono_class_from_mono_type (sig->params [i]));
3882 } else {
3883 mono_mb_emit_op (mb, CEE_LDOBJ, mono_class_from_mono_type (sig->params [i]));
3884 }
3885 break;
3886 default:
3887 g_assert_not_reached ();
3888 }
3889 }
3890
3891 if (virtual_) {
3892 mono_mb_emit_op (mb, CEE_CALLVIRT, method);
3893 } else if (need_direct_wrapper) {
3894 mono_mb_emit_op (mb, CEE_CALL, method);
3895 } else {
3896 mono_mb_emit_ldarg (mb, 3);
3897 mono_mb_emit_calli (mb, callsig);
3898 }
3899
3900 if (sig->ret->byref) {
3901 /* fixme: */
3902 g_assert_not_reached ();
3903 }
3904
3905 switch (sig->ret->type) {
3906 case MONO_TYPE_VOID:
3907 if (!string_ctor)
3908 void_ret = TRUE;
3909 break;
3910 case MONO_TYPE_BOOLEAN:
3911 case MONO_TYPE_CHAR:
3912 case MONO_TYPE_I1:
3913 case MONO_TYPE_U1:
3914 case MONO_TYPE_I2:
3915 case MONO_TYPE_U2:
3916 case MONO_TYPE_I4:
3917 case MONO_TYPE_U4:
3918 case MONO_TYPE_I:
3919 case MONO_TYPE_U:
3920 case MONO_TYPE_R4:
3921 case MONO_TYPE_R8:
3922 case MONO_TYPE_I8:
3923 case MONO_TYPE_U8:
3924 case MONO_TYPE_VALUETYPE:
3925 case MONO_TYPE_TYPEDBYREF:
3926 case MONO_TYPE_GENERICINST:
3927 /* box value types */
3928 mono_mb_emit_op (mb, CEE_BOX, mono_class_from_mono_type (sig->ret));
3929 break;
3930 case MONO_TYPE_STRING:
3931 case MONO_TYPE_CLASS:
3932 case MONO_TYPE_ARRAY:
3933 case MONO_TYPE_SZARRAY:
3934 case MONO_TYPE_OBJECT:
3935 /* nothing to do */
3936 break;
3937 case MONO_TYPE_PTR:
3938 /* The result is an IntPtr */
3939 mono_mb_emit_op (mb, CEE_BOX, mono_defaults.int_class);
3940 break;
3941 default:
3942 g_assert_not_reached ();
3943 }
3944
3945 if (!void_ret)
3946 mono_mb_emit_stloc (mb, loc_res);
3947
3948 /* Convert back nullable-byref arguments */
3949 for (i = 0; i < sig->param_count; i++) {
3950 MonoType *t = sig->params [i];
3951
3952 /*
3953 * Box the result and put it back into the array, the caller will have
3954 * to obtain it from there.
3955 */
3956 if (t->byref && t->type == MONO_TYPE_GENERICINST && mono_class_is_nullable (mono_class_from_mono_type (t))) {
3957 mono_mb_emit_ldarg (mb, 1);
3958 mono_mb_emit_icon (mb, sizeof (gpointer) * i);
3959 mono_mb_emit_byte (mb, CEE_ADD);
3960
3961 mono_mb_emit_ldloc (mb, tmp_nullable_locals [i]);
3962 mono_mb_emit_op (mb, CEE_BOX, mono_class_from_mono_type (t));
3963
3964 mono_mb_emit_byte (mb, CEE_STIND_REF);
3965 }
3966 }
3967
3968 g_free (tmp_nullable_locals);
3969 }
3970
3971 static void
3972 emit_runtime_invoke_body (MonoMethodBuilder *mb, MonoImage *image, MonoMethod *method,
3973 MonoMethodSignature *sig, MonoMethodSignature *callsig,
3974 gboolean virtual_, gboolean need_direct_wrapper)
3975 {
3976 gint32 labels [16];
3977 MonoExceptionClause *clause;
3978 int loc_res, loc_exc;
3979
3980 /* The wrapper looks like this:
3981 *
3982 * <interrupt check>
3983 * if (exc) {
3984 * try {
3985 * return <call>
3986 * } catch (Exception e) {
3987 * *exc = e;
3988 * }
3989 * } else {
3990 * return <call>
3991 * }
3992 */
3993
3994 /* allocate local 0 (object) tmp */
3995 loc_res = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
3996 /* allocate local 1 (object) exc */
3997 loc_exc = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
3998
3999 /* *exc is assumed to be initialized to NULL by the caller */
4000
4001 mono_mb_emit_byte (mb, CEE_LDARG_2);
4002 labels [0] = mono_mb_emit_branch (mb, CEE_BRFALSE);
4003
4004 /*
4005 * if (exc) case
4006 */
4007 labels [1] = mono_mb_get_label (mb);
4008 emit_thread_force_interrupt_checkpoint (mb);
4009 emit_invoke_call (mb, method, sig, callsig, loc_res, virtual_, need_direct_wrapper);
4010
4011 labels [2] = mono_mb_emit_branch (mb, CEE_LEAVE);
4012
4013 /* Add a try clause around the call */
4014 clause = (MonoExceptionClause *)mono_image_alloc0 (image, sizeof (MonoExceptionClause));
4015 clause->flags = MONO_EXCEPTION_CLAUSE_NONE;
4016 clause->data.catch_class = mono_defaults.exception_class;
4017 clause->try_offset = labels [1];
4018 clause->try_len = mono_mb_get_label (mb) - labels [1];
4019
4020 clause->handler_offset = mono_mb_get_label (mb);
4021
4022 /* handler code */
4023 mono_mb_emit_stloc (mb, loc_exc);
4024 mono_mb_emit_byte (mb, CEE_LDARG_2);
4025 mono_mb_emit_ldloc (mb, loc_exc);
4026 mono_mb_emit_byte (mb, CEE_STIND_REF);
4027
4028 mono_mb_emit_branch (mb, CEE_LEAVE);
4029
4030 clause->handler_len = mono_mb_get_pos (mb) - clause->handler_offset;
4031
4032 mono_mb_set_clauses (mb, 1, clause);
4033
4034 mono_mb_patch_branch (mb, labels [2]);
4035 mono_mb_emit_ldloc (mb, loc_res);
4036 mono_mb_emit_byte (mb, CEE_RET);
4037
4038 /*
4039 * if (!exc) case
4040 */
4041 mono_mb_patch_branch (mb, labels [0]);
4042 emit_thread_force_interrupt_checkpoint (mb);
4043 emit_invoke_call (mb, method, sig, callsig, loc_res, virtual_, need_direct_wrapper);
4044
4045 mono_mb_emit_ldloc (mb, 0);
4046 mono_mb_emit_byte (mb, CEE_RET);
4047 }
4048 #endif
4049
4050 /*
4051 * generates IL code for the runtime invoke function
4052 * MonoObject *runtime_invoke (MonoObject *this_obj, void **params, MonoObject **exc, void* method)
4053 *
4054 * we also catch exceptions if exc != null
4055 * If VIRTUAL is TRUE, then METHOD is invoked virtually on THIS. This is useful since
4056 * it means that the compiled code for METHOD does not have to be looked up
4057 * before calling the runtime invoke wrapper. In this case, the wrapper ignores
4058 * its METHOD argument.
4059 */
4060 MonoMethod *
4061 mono_marshal_get_runtime_invoke (MonoMethod *method, gboolean virtual_)
4062 {
4063 MonoMethodSignature *sig, *csig, *callsig;
4064 MonoMethodBuilder *mb;
4065 GHashTable *cache = NULL;
4066 MonoClass *target_klass;
4067 MonoMethod *res = NULL;
4068 static MonoMethodSignature *cctor_signature = NULL;
4069 static MonoMethodSignature *finalize_signature = NULL;
4070 char *name;
4071 const char *param_names [16];
4072 gboolean need_direct_wrapper = FALSE;
4073 WrapperInfo *info;
4074
4075 g_assert (method);
4076
4077 if (!cctor_signature) {
4078 cctor_signature = mono_metadata_signature_alloc (mono_defaults.corlib, 0);
4079 cctor_signature->ret = &mono_defaults.void_class->byval_arg;
4080 }
4081 if (!finalize_signature) {
4082 finalize_signature = mono_metadata_signature_alloc (mono_defaults.corlib, 0);
4083 finalize_signature->ret = &mono_defaults.void_class->byval_arg;
4084 finalize_signature->hasthis = 1;
4085 }
4086
4087 if (virtual_)
4088 need_direct_wrapper = TRUE;
4089
4090 /*
4091 * Use a separate cache indexed by methods to speed things up and to avoid the
4092 * boundless mempool growth caused by the signature_dup stuff below.
4093 */
4094 if (virtual_)
4095 cache = get_cache (&method->klass->image->runtime_invoke_vcall_cache, mono_aligned_addr_hash, NULL);
4096 else
4097 cache = get_cache (&mono_method_get_wrapper_cache (method)->runtime_invoke_direct_cache, mono_aligned_addr_hash, NULL);
4098
4099 res = mono_marshal_find_in_cache (cache, method);
4100 if (res)
4101 return res;
4102
4103 if (method->klass->rank && (method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) &&
4104 (method->iflags & METHOD_IMPL_ATTRIBUTE_NATIVE)) {
4105 /*
4106 * Array Get/Set/Address methods. The JIT implements them using inline code
4107 * so we need to create an invoke wrapper which calls the method directly.
4108 */
4109 need_direct_wrapper = TRUE;
4110 }
4111
4112 if (method->string_ctor) {
4113 callsig = lookup_string_ctor_signature (mono_method_signature (method));
4114 if (!callsig)
4115 callsig = add_string_ctor_signature (method);
4116 /* Can't share this as we push a string as this */
4117 need_direct_wrapper = TRUE;
4118 } else {
4119 if (method_is_dynamic (method))
4120 callsig = mono_metadata_signature_dup_full (method->klass->image, mono_method_signature (method));
4121 else
4122 callsig = mono_method_signature (method);
4123 }
4124
4125 sig = mono_method_signature (method);
4126
4127 target_klass = get_wrapper_target_class (method->klass->image);
4128
4129 /* Try to share wrappers for non-corlib methods with simple signatures */
4130 if (mono_metadata_signature_equal (callsig, cctor_signature)) {
4131 callsig = cctor_signature;
4132 target_klass = mono_defaults.object_class;
4133 } else if (mono_metadata_signature_equal (callsig, finalize_signature)) {
4134 callsig = finalize_signature;
4135 target_klass = mono_defaults.object_class;
4136 }
4137
4138 if (need_direct_wrapper) {
4139 /* Already searched at the start */
4140 } else {
4141 MonoMethodSignature *tmp_sig;
4142
4143 callsig = mono_marshal_get_runtime_invoke_sig (callsig);
4144 GHashTable **cache_table = NULL;
4145
4146 if (method->klass->valuetype && mono_method_signature (method)->hasthis)
4147 cache_table = &mono_method_get_wrapper_cache (method)->runtime_invoke_vtype_cache;
4148 else
4149 cache_table = &mono_method_get_wrapper_cache (method)->runtime_invoke_cache;
4150
4151 cache = get_cache (cache_table, (GHashFunc)mono_signature_hash,
4152 (GCompareFunc)runtime_invoke_signature_equal);
4153
4154 /* from mono_marshal_find_in_cache */
4155 mono_marshal_lock ();
4156 res = (MonoMethod *)g_hash_table_lookup (cache, callsig);
4157 mono_marshal_unlock ();
4158
4159 if (res) {
4160 g_free (callsig);
4161 return res;
4162 }
4163
4164 /* Make a copy of the signature from the image mempool */
4165 tmp_sig = callsig;
4166 callsig = mono_metadata_signature_dup_full (target_klass->image, callsig);
4167 g_free (tmp_sig);
4168 }
4169
4170 csig = mono_metadata_signature_alloc (target_klass->image, 4);
4171
4172 csig->ret = &mono_defaults.object_class->byval_arg;
4173 if (method->klass->valuetype && mono_method_signature (method)->hasthis)
4174 csig->params [0] = get_runtime_invoke_type (&method->klass->this_arg, FALSE);
4175 else
4176 csig->params [0] = &mono_defaults.object_class->byval_arg;
4177 csig->params [1] = &mono_defaults.int_class->byval_arg;
4178 csig->params [2] = &mono_defaults.int_class->byval_arg;
4179 csig->params [3] = &mono_defaults.int_class->byval_arg;
4180 csig->pinvoke = 1;
4181 #if TARGET_WIN32
4182 /* This is called from runtime code so it has to be cdecl */
4183 csig->call_convention = MONO_CALL_C;
4184 #endif
4185
4186 name = mono_signature_to_name (callsig, virtual_ ? "runtime_invoke_virtual" : "runtime_invoke");
4187 mb = mono_mb_new (target_klass, name, MONO_WRAPPER_RUNTIME_INVOKE);
4188 g_free (name);
4189
4190 #ifndef DISABLE_JIT
4191 param_names [0] = "this";
4192 param_names [1] = "params";
4193 param_names [2] = "exc";
4194 param_names [3] = "method";
4195 mono_mb_set_param_names (mb, param_names);
4196
4197 emit_runtime_invoke_body (mb, target_klass->image, method, sig, callsig, virtual_, need_direct_wrapper);
4198 #endif
4199
4200 if (need_direct_wrapper) {
4201 #ifndef DISABLE_JIT
4202 mb->skip_visibility = 1;
4203 #endif
4204 info = mono_wrapper_info_create (mb, virtual_ ? WRAPPER_SUBTYPE_RUNTIME_INVOKE_VIRTUAL : WRAPPER_SUBTYPE_RUNTIME_INVOKE_DIRECT);
4205 info->d.runtime_invoke.method = method;
4206 res = mono_mb_create_and_cache_full (cache, method, mb, csig, sig->param_count + 16, info, NULL);
4207 } else {
4208 /* taken from mono_mb_create_and_cache */
4209 mono_marshal_lock ();
4210 res = (MonoMethod *)g_hash_table_lookup (cache, callsig);
4211 mono_marshal_unlock ();
4212
4213 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_RUNTIME_INVOKE_NORMAL);
4214 info->d.runtime_invoke.sig = callsig;
4215
4216 /* Somebody may have created it before us */
4217 if (!res) {
4218 MonoMethod *newm;
4219 newm = mono_mb_create (mb, csig, sig->param_count + 16, info);
4220
4221 mono_marshal_lock ();
4222 res = (MonoMethod *)g_hash_table_lookup (cache, callsig);
4223 if (!res) {
4224 GHashTable *direct_cache;
4225 res = newm;
4226 g_hash_table_insert (cache, callsig, res);
4227 /* Can't insert it into wrapper_hash since the key is a signature */
4228 direct_cache = mono_method_get_wrapper_cache (method)->runtime_invoke_direct_cache;
4229
4230 g_hash_table_insert (direct_cache, method, res);
4231 } else {
4232 mono_free_method (newm);
4233 }
4234 mono_marshal_unlock ();
4235 }
4236
4237 /* end mono_mb_create_and_cache */
4238 }
4239
4240 mono_mb_free (mb);
4241
4242 return res;
4243 }
4244
4245 /*
4246 * mono_marshal_get_runtime_invoke_dynamic:
4247 *
4248 * Return a method which can be used to invoke managed methods from native code
4249 * dynamically.
4250 * The signature of the returned method is given by RuntimeInvokeDynamicFunction:
4251 * void runtime_invoke (void *args, MonoObject **exc, void *compiled_method)
4252 * ARGS should point to an architecture specific structure containing
4253 * the arguments and space for the return value.
4254 * The other arguments are the same as for runtime_invoke (), except that
4255 * ARGS should contain the this argument too.
4256 * This wrapper serves the same purpose as the runtime-invoke wrappers, but there
4257 * is only one copy of it, which is useful in full-aot.
4258 */
4259 MonoMethod*
4260 mono_marshal_get_runtime_invoke_dynamic (void)
4261 {
4262 static MonoMethod *method;
4263 MonoMethodSignature *csig;
4264 MonoExceptionClause *clause;
4265 MonoMethodBuilder *mb;
4266 int pos, posna;
4267 char *name;
4268 WrapperInfo *info;
4269
4270 if (method)
4271 return method;
4272
4273 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 4);
4274
4275 csig->ret = &mono_defaults.void_class->byval_arg;
4276 csig->params [0] = &mono_defaults.int_class->byval_arg;
4277 csig->params [1] = &mono_defaults.int_class->byval_arg;
4278 csig->params [2] = &mono_defaults.int_class->byval_arg;
4279 csig->params [3] = &mono_defaults.int_class->byval_arg;
4280
4281 name = g_strdup ("runtime_invoke_dynamic");
4282 mb = mono_mb_new (mono_defaults.object_class, name, MONO_WRAPPER_RUNTIME_INVOKE);
4283 g_free (name);
4284
4285 #ifndef DISABLE_JIT
4286 /* allocate local 0 (object) tmp */
4287 mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
4288 /* allocate local 1 (object) exc */
4289 mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
4290
4291 /* cond set *exc to null */
4292 mono_mb_emit_byte (mb, CEE_LDARG_1);
4293 mono_mb_emit_byte (mb, CEE_BRFALSE_S);
4294 mono_mb_emit_byte (mb, 3);
4295 mono_mb_emit_byte (mb, CEE_LDARG_1);
4296 mono_mb_emit_byte (mb, CEE_LDNULL);
4297 mono_mb_emit_byte (mb, CEE_STIND_REF);
4298
4299 emit_thread_force_interrupt_checkpoint (mb);
4300
4301 mono_mb_emit_byte (mb, CEE_LDARG_0);
4302 mono_mb_emit_byte (mb, CEE_LDARG_2);
4303 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
4304 mono_mb_emit_byte (mb, CEE_MONO_DYN_CALL);
4305
4306 pos = mono_mb_emit_branch (mb, CEE_LEAVE);
4307
4308 clause = (MonoExceptionClause *)mono_image_alloc0 (mono_defaults.corlib, sizeof (MonoExceptionClause));
4309 clause->flags = MONO_EXCEPTION_CLAUSE_FILTER;
4310 clause->try_len = mono_mb_get_label (mb);
4311
4312 /* filter code */
4313 clause->data.filter_offset = mono_mb_get_label (mb);
4314
4315 mono_mb_emit_byte (mb, CEE_POP);
4316 mono_mb_emit_byte (mb, CEE_LDARG_1);
4317 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
4318 mono_mb_emit_byte (mb, CEE_PREFIX1);
4319 mono_mb_emit_byte (mb, CEE_CGT_UN);
4320 mono_mb_emit_byte (mb, CEE_PREFIX1);
4321 mono_mb_emit_byte (mb, CEE_ENDFILTER);
4322
4323 clause->handler_offset = mono_mb_get_label (mb);
4324
4325 /* handler code */
4326 /* store exception */
4327 mono_mb_emit_stloc (mb, 1);
4328
4329 mono_mb_emit_byte (mb, CEE_LDARG_1);
4330 mono_mb_emit_ldloc (mb, 1);
4331 mono_mb_emit_byte (mb, CEE_STIND_REF);
4332
4333 mono_mb_emit_byte (mb, CEE_LDNULL);
4334 mono_mb_emit_stloc (mb, 0);
4335
4336 /* Check for the abort exception */
4337 mono_mb_emit_ldloc (mb, 1);
4338 mono_mb_emit_op (mb, CEE_ISINST, mono_defaults.threadabortexception_class);
4339 posna = mono_mb_emit_short_branch (mb, CEE_BRFALSE_S);
4340
4341 /* Delay the abort exception */
4342 mono_mb_emit_icall (mb, ves_icall_System_Threading_Thread_ResetAbort);
4343
4344 mono_mb_patch_short_branch (mb, posna);
4345 mono_mb_emit_branch (mb, CEE_LEAVE);
4346
4347 clause->handler_len = mono_mb_get_pos (mb) - clause->handler_offset;
4348
4349 mono_mb_set_clauses (mb, 1, clause);
4350
4351 /* return result */
4352 mono_mb_patch_branch (mb, pos);
4353 //mono_mb_emit_ldloc (mb, 0);
4354 mono_mb_emit_byte (mb, CEE_RET);
4355 #endif /* DISABLE_JIT */
4356
4357 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_RUNTIME_INVOKE_DYNAMIC);
4358
4359 mono_marshal_lock ();
4360 /* double-checked locking */
4361 if (!method)
4362 method = mono_mb_create (mb, csig, 16, info);
4363
4364 mono_marshal_unlock ();
4365
4366 mono_mb_free (mb);
4367
4368 return method;
4369 }
4370
4371 /*
4372 * mono_marshal_get_runtime_invoke_for_sig:
4373 *
4374 * Return a runtime invoke wrapper for a given signature.
4375 */
4376 MonoMethod *
4377 mono_marshal_get_runtime_invoke_for_sig (MonoMethodSignature *sig)
4378 {
4379 MonoMethodSignature *csig, *callsig;
4380 MonoMethodBuilder *mb;
4381 MonoImage *image;
4382 GHashTable *cache = NULL;
4383 GHashTable **cache_table = NULL;
4384 MonoMethod *res = NULL;
4385 char *name;
4386 const char *param_names [16];
4387 WrapperInfo *info;
4388
4389 /* A simplified version of mono_marshal_get_runtime_invoke */
4390
4391 image = mono_defaults.corlib;
4392
4393 callsig = mono_marshal_get_runtime_invoke_sig (sig);
4394
4395 cache_table = &image->wrapper_caches.runtime_invoke_sig_cache;
4396
4397 cache = get_cache (cache_table, (GHashFunc)mono_signature_hash,
4398 (GCompareFunc)runtime_invoke_signature_equal);
4399
4400 /* from mono_marshal_find_in_cache */
4401 mono_marshal_lock ();
4402 res = (MonoMethod *)g_hash_table_lookup (cache, callsig);
4403 mono_marshal_unlock ();
4404
4405 if (res) {
4406 g_free (callsig);
4407 return res;
4408 }
4409
4410 /* Make a copy of the signature from the image mempool */
4411 callsig = mono_metadata_signature_dup_full (image, callsig);
4412
4413 csig = mono_metadata_signature_alloc (image, 4);
4414 csig->ret = &mono_defaults.object_class->byval_arg;
4415 csig->params [0] = &mono_defaults.object_class->byval_arg;
4416 csig->params [1] = &mono_defaults.int_class->byval_arg;
4417 csig->params [2] = &mono_defaults.int_class->byval_arg;
4418 csig->params [3] = &mono_defaults.int_class->byval_arg;
4419 csig->pinvoke = 1;
4420 #if TARGET_WIN32
4421 /* This is called from runtime code so it has to be cdecl */
4422 csig->call_convention = MONO_CALL_C;
4423 #endif
4424
4425 name = mono_signature_to_name (callsig, "runtime_invoke_sig");
4426 mb = mono_mb_new (mono_defaults.object_class, name, MONO_WRAPPER_RUNTIME_INVOKE);
4427 g_free (name);
4428
4429 #ifndef DISABLE_JIT
4430 param_names [0] = "this";
4431 param_names [1] = "params";
4432 param_names [2] = "exc";
4433 param_names [3] = "method";
4434 mono_mb_set_param_names (mb, param_names);
4435
4436 emit_runtime_invoke_body (mb, image, NULL, sig, callsig, FALSE, FALSE);
4437 #endif
4438
4439 /* taken from mono_mb_create_and_cache */
4440 mono_marshal_lock ();
4441 res = (MonoMethod *)g_hash_table_lookup (cache, callsig);
4442 mono_marshal_unlock ();
4443
4444 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_RUNTIME_INVOKE_NORMAL);
4445 info->d.runtime_invoke.sig = callsig;
4446
4447 /* Somebody may have created it before us */
4448 if (!res) {
4449 MonoMethod *newm;
4450 newm = mono_mb_create (mb, csig, sig->param_count + 16, info);
4451
4452 mono_marshal_lock ();
4453 res = (MonoMethod *)g_hash_table_lookup (cache, callsig);
4454 if (!res) {
4455 res = newm;
4456 g_hash_table_insert (cache, callsig, res);
4457 } else {
4458 mono_free_method (newm);
4459 }
4460 mono_marshal_unlock ();
4461 }
4462
4463 /* end mono_mb_create_and_cache */
4464
4465 mono_mb_free (mb);
4466
4467 return res;
4468 }
4469
4470 #ifndef DISABLE_JIT
4471 static void
4472 mono_mb_emit_auto_layout_exception (MonoMethodBuilder *mb, MonoClass *klass)
4473 {
4474 char *msg = g_strdup_printf ("The type `%s.%s' layout needs to be Sequential or Explicit",
4475 klass->name_space, klass->name);
4476
4477 mono_mb_emit_exception_marshal_directive (mb, msg);
4478 }
4479 #endif
4480
4481 /*
4482 * generates IL code for the icall wrapper (the generated method
4483 * calls the unmanaged code in func)
4484 */
4485 MonoMethod *
4486 mono_marshal_get_icall_wrapper (MonoMethodSignature *sig, const char *name, gconstpointer func, gboolean check_exceptions)
4487 {
4488 MonoMethodSignature *csig, *csig2;
4489 MonoMethodBuilder *mb;
4490 MonoMethod *res;
4491 int i;
4492 WrapperInfo *info;
4493
4494 GHashTable *cache = get_cache (&mono_defaults.object_class->image->icall_wrapper_cache, mono_aligned_addr_hash, NULL);
4495 if ((res = mono_marshal_find_in_cache (cache, (gpointer) func)))
4496 return res;
4497
4498 g_assert (sig->pinvoke);
4499
4500 mb = mono_mb_new (mono_defaults.object_class, name, MONO_WRAPPER_MANAGED_TO_NATIVE);
4501
4502 mb->method->save_lmf = 1;
4503
4504 /* Add an explicit this argument */
4505 if (sig->hasthis)
4506 csig2 = mono_metadata_signature_dup_add_this (mono_defaults.corlib, sig, mono_defaults.object_class);
4507 else
4508 csig2 = mono_metadata_signature_dup_full (mono_defaults.corlib, sig);
4509
4510 #ifndef DISABLE_JIT
4511 if (sig->hasthis)
4512 mono_mb_emit_byte (mb, CEE_LDARG_0);
4513
4514 for (i = 0; i < sig->param_count; i++)
4515 mono_mb_emit_ldarg (mb, i + sig->hasthis);
4516
4517 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
4518 mono_mb_emit_op (mb, CEE_MONO_JIT_ICALL_ADDR, (gpointer)func);
4519 mono_mb_emit_calli (mb, csig2);
4520 if (check_exceptions)
4521 emit_thread_interrupt_checkpoint (mb);
4522 mono_mb_emit_byte (mb, CEE_RET);
4523 #endif
4524
4525 csig = mono_metadata_signature_dup_full (mono_defaults.corlib, sig);
4526 csig->pinvoke = 0;
4527 if (csig->call_convention == MONO_CALL_VARARG)
4528 csig->call_convention = 0;
4529
4530 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_ICALL_WRAPPER);
4531 info->d.icall.func = (gpointer)func;
4532 res = mono_mb_create_and_cache_full (cache, (gpointer) func, mb, csig, csig->param_count + 16, info, NULL);
4533 mono_mb_free (mb);
4534
4535 return res;
4536 }
4537
4538 static int
4539 emit_marshal_custom (EmitMarshalContext *m, int argnum, MonoType *t,
4540 MonoMarshalSpec *spec,
4541 int conv_arg, MonoType **conv_arg_type,
4542 MarshalAction action)
4543 {
4544 #ifdef DISABLE_JIT
4545 if (action == MARSHAL_ACTION_CONV_IN && t->type == MONO_TYPE_VALUETYPE)
4546 *conv_arg_type = &mono_defaults.int_class->byval_arg;
4547 return conv_arg;
4548 #else
4549 MonoError error;
4550 MonoType *mtype;
4551 MonoClass *mklass;
4552 static MonoClass *ICustomMarshaler = NULL;
4553 static MonoMethod *cleanup_native, *cleanup_managed;
4554 static MonoMethod *marshal_managed_to_native, *marshal_native_to_managed;
4555 MonoMethod *get_instance = NULL;
4556 MonoMethodBuilder *mb = m->mb;
4557 char *exception_msg = NULL;
4558 guint32 loc1;
4559 int pos2;
4560
4561 if (!ICustomMarshaler) {
4562 MonoClass *klass = mono_class_try_get_icustom_marshaler_class ();
4563 if (!klass) {
4564 exception_msg = g_strdup ("Current profile doesn't support ICustomMarshaler");
4565 goto handle_exception;
4566 }
4567
4568 cleanup_native = mono_class_get_method_from_name (klass, "CleanUpNativeData", 1);
4569 g_assert (cleanup_native);
4570 cleanup_managed = mono_class_get_method_from_name (klass, "CleanUpManagedData", 1);
4571 g_assert (cleanup_managed);
4572 marshal_managed_to_native = mono_class_get_method_from_name (klass, "MarshalManagedToNative", 1);
4573 g_assert (marshal_managed_to_native);
4574 marshal_native_to_managed = mono_class_get_method_from_name (klass, "MarshalNativeToManaged", 1);
4575 g_assert (marshal_native_to_managed);
4576
4577 mono_memory_barrier ();
4578 ICustomMarshaler = klass;
4579 }
4580
4581 if (spec->data.custom_data.image)
4582 mtype = mono_reflection_type_from_name_checked (spec->data.custom_data.custom_name, spec->data.custom_data.image, &error);
4583 else
4584 mtype = mono_reflection_type_from_name_checked (spec->data.custom_data.custom_name, m->image, &error);
4585 g_assert (mtype != NULL);
4586 mono_error_assert_ok (&error);
4587 mklass = mono_class_from_mono_type (mtype);
4588 g_assert (mklass != NULL);
4589
4590 if (!mono_class_is_assignable_from (ICustomMarshaler, mklass))
4591 exception_msg = g_strdup_printf ("Custom marshaler '%s' does not implement the ICustomMarshaler interface.", mklass->name);
4592
4593 get_instance = mono_class_get_method_from_name_flags (mklass, "GetInstance", 1, METHOD_ATTRIBUTE_STATIC);
4594 if (get_instance) {
4595 MonoMethodSignature *get_sig = mono_method_signature (get_instance);
4596 if ((get_sig->ret->type != MONO_TYPE_CLASS) ||
4597 (mono_class_from_mono_type (get_sig->ret) != ICustomMarshaler) ||
4598 (get_sig->params [0]->type != MONO_TYPE_STRING))
4599 get_instance = NULL;
4600 }
4601
4602 if (!get_instance)
4603 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);
4604
4605 handle_exception:
4606 /* Throw exception and emit compensation code if neccesary */
4607 if (exception_msg) {
4608 switch (action) {
4609 case MARSHAL_ACTION_CONV_IN:
4610 case MARSHAL_ACTION_CONV_RESULT:
4611 case MARSHAL_ACTION_MANAGED_CONV_RESULT:
4612 if ((action == MARSHAL_ACTION_CONV_RESULT) || (action == MARSHAL_ACTION_MANAGED_CONV_RESULT))
4613 mono_mb_emit_byte (mb, CEE_POP);
4614
4615 mono_mb_emit_exception_full (mb, "System", "ApplicationException", exception_msg);
4616 g_free (exception_msg);
4617
4618 break;
4619 case MARSHAL_ACTION_PUSH:
4620 mono_mb_emit_byte (mb, CEE_LDNULL);
4621 break;
4622 default:
4623 break;
4624 }
4625 return 0;
4626 }
4627
4628 /* FIXME: MS.NET seems to create one instance for each klass + cookie pair */
4629 /* FIXME: MS.NET throws an exception if GetInstance returns null */
4630
4631 switch (action) {
4632 case MARSHAL_ACTION_CONV_IN:
4633 switch (t->type) {
4634 case MONO_TYPE_CLASS:
4635 case MONO_TYPE_OBJECT:
4636 case MONO_TYPE_STRING:
4637 case MONO_TYPE_ARRAY:
4638 case MONO_TYPE_SZARRAY:
4639 case MONO_TYPE_VALUETYPE:
4640 break;
4641
4642 default:
4643 g_warning ("custom marshalling of type %x is currently not supported", t->type);
4644 g_assert_not_reached ();
4645 break;
4646 }
4647
4648 conv_arg = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
4649
4650 mono_mb_emit_byte (mb, CEE_LDNULL);
4651 mono_mb_emit_stloc (mb, conv_arg);
4652
4653 if (t->byref && (t->attrs & PARAM_ATTRIBUTE_OUT))
4654 break;
4655
4656 /* Minic MS.NET behavior */
4657 if (!t->byref && (t->attrs & PARAM_ATTRIBUTE_OUT) && !(t->attrs & PARAM_ATTRIBUTE_IN))
4658 break;
4659
4660 /* Check for null */
4661 mono_mb_emit_ldarg (mb, argnum);
4662 if (t->byref)
4663 mono_mb_emit_byte (mb, CEE_LDIND_I);
4664 pos2 = mono_mb_emit_branch (mb, CEE_BRFALSE);
4665
4666 mono_mb_emit_ldstr (mb, g_strdup (spec->data.custom_data.cookie));
4667
4668 mono_mb_emit_op (mb, CEE_CALL, get_instance);
4669
4670 mono_mb_emit_ldarg (mb, argnum);
4671 if (t->byref)
4672 mono_mb_emit_byte (mb, CEE_LDIND_REF);
4673
4674 if (t->type == MONO_TYPE_VALUETYPE) {
4675 /*
4676 * Since we can't determine the type of the argument, we
4677 * will assume the unmanaged function takes a pointer.
4678 */
4679 *conv_arg_type = &mono_defaults.int_class->byval_arg;
4680
4681 mono_mb_emit_op (mb, CEE_BOX, mono_class_from_mono_type (t));
4682 }
4683
4684 mono_mb_emit_op (mb, CEE_CALLVIRT, marshal_managed_to_native);
4685 mono_mb_emit_stloc (mb, conv_arg);
4686
4687 mono_mb_patch_branch (mb, pos2);
4688 break;
4689
4690 case MARSHAL_ACTION_CONV_OUT:
4691 /* Check for null */
4692 mono_mb_emit_ldloc (mb, conv_arg);
4693 pos2 = mono_mb_emit_branch (mb, CEE_BRFALSE);
4694
4695 if (t->byref) {
4696 mono_mb_emit_ldarg (mb, argnum);
4697
4698 mono_mb_emit_ldstr (mb, g_strdup (spec->data.custom_data.cookie));
4699
4700 mono_mb_emit_op (mb, CEE_CALL, get_instance);
4701
4702 mono_mb_emit_ldloc (mb, conv_arg);
4703 mono_mb_emit_op (mb, CEE_CALLVIRT, marshal_native_to_managed);
4704 mono_mb_emit_byte (mb, CEE_STIND_REF);
4705 } else if (t->attrs & PARAM_ATTRIBUTE_OUT) {
4706 mono_mb_emit_ldstr (mb, g_strdup (spec->data.custom_data.cookie));
4707
4708 mono_mb_emit_op (mb, CEE_CALL, get_instance);
4709
4710 mono_mb_emit_ldloc (mb, conv_arg);
4711 mono_mb_emit_op (mb, CEE_CALLVIRT, marshal_native_to_managed);
4712
4713 /* We have nowhere to store the result */
4714 mono_mb_emit_byte (mb, CEE_POP);
4715 }
4716
4717 mono_mb_emit_ldstr (mb, g_strdup (spec->data.custom_data.cookie));
4718
4719 mono_mb_emit_op (mb, CEE_CALL, get_instance);
4720
4721 mono_mb_emit_ldloc (mb, conv_arg);
4722
4723 mono_mb_emit_op (mb, CEE_CALLVIRT, cleanup_native);
4724
4725 mono_mb_patch_branch (mb, pos2);
4726 break;
4727
4728 case MARSHAL_ACTION_PUSH:
4729 if (t->byref)
4730 mono_mb_emit_ldloc_addr (mb, conv_arg);
4731 else
4732 mono_mb_emit_ldloc (mb, conv_arg);
4733 break;
4734
4735 case MARSHAL_ACTION_CONV_RESULT:
4736 loc1 = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
4737
4738 mono_mb_emit_stloc (mb, 3);
4739
4740 mono_mb_emit_ldloc (mb, 3);
4741 mono_mb_emit_stloc (mb, loc1);
4742
4743 /* Check for null */
4744 mono_mb_emit_ldloc (mb, 3);
4745 pos2 = mono_mb_emit_branch (mb, CEE_BRFALSE);
4746
4747 mono_mb_emit_ldstr (mb, g_strdup (spec->data.custom_data.cookie));
4748
4749 mono_mb_emit_op (mb, CEE_CALL, get_instance);
4750 mono_mb_emit_byte (mb, CEE_DUP);
4751
4752 mono_mb_emit_ldloc (mb, 3);
4753 mono_mb_emit_op (mb, CEE_CALLVIRT, marshal_native_to_managed);
4754 mono_mb_emit_stloc (mb, 3);
4755
4756 mono_mb_emit_ldloc (mb, loc1);
4757 mono_mb_emit_op (mb, CEE_CALLVIRT, cleanup_native);
4758
4759 mono_mb_patch_branch (mb, pos2);
4760 break;
4761
4762 case MARSHAL_ACTION_MANAGED_CONV_IN:
4763 conv_arg = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
4764
4765 mono_mb_emit_byte (mb, CEE_LDNULL);
4766 mono_mb_emit_stloc (mb, conv_arg);
4767
4768 if (t->byref && t->attrs & PARAM_ATTRIBUTE_OUT)
4769 break;
4770
4771 /* Check for null */
4772 mono_mb_emit_ldarg (mb, argnum);
4773 if (t->byref)
4774 mono_mb_emit_byte (mb, CEE_LDIND_I);
4775 pos2 = mono_mb_emit_branch (mb, CEE_BRFALSE);
4776
4777 mono_mb_emit_ldstr (mb, g_strdup (spec->data.custom_data.cookie));
4778 mono_mb_emit_op (mb, CEE_CALL, get_instance);
4779
4780 mono_mb_emit_ldarg (mb, argnum);
4781 if (t->byref)
4782 mono_mb_emit_byte (mb, CEE_LDIND_I);
4783
4784 mono_mb_emit_op (mb, CEE_CALLVIRT, marshal_native_to_managed);
4785 mono_mb_emit_stloc (mb, conv_arg);
4786
4787 mono_mb_patch_branch (mb, pos2);
4788 break;
4789
4790 case MARSHAL_ACTION_MANAGED_CONV_RESULT:
4791 g_assert (!t->byref);
4792
4793 loc1 = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
4794
4795 mono_mb_emit_stloc (mb, 3);
4796
4797 mono_mb_emit_ldloc (mb, 3);
4798 mono_mb_emit_stloc (mb, loc1);
4799
4800 /* Check for null */
4801 mono_mb_emit_ldloc (mb, 3);
4802 pos2 = mono_mb_emit_branch (mb, CEE_BRFALSE);
4803
4804 mono_mb_emit_ldstr (mb, g_strdup (spec->data.custom_data.cookie));
4805 mono_mb_emit_op (mb, CEE_CALL, get_instance);
4806 mono_mb_emit_byte (mb, CEE_DUP);
4807
4808 mono_mb_emit_ldloc (mb, 3);
4809 mono_mb_emit_op (mb, CEE_CALLVIRT, marshal_managed_to_native);
4810 mono_mb_emit_stloc (mb, 3);
4811
4812 mono_mb_emit_ldloc (mb, loc1);
4813 mono_mb_emit_op (mb, CEE_CALLVIRT, cleanup_managed);
4814
4815 mono_mb_patch_branch (mb, pos2);
4816 break;
4817
4818 case MARSHAL_ACTION_MANAGED_CONV_OUT:
4819
4820 /* Check for null */
4821 mono_mb_emit_ldloc (mb, conv_arg);
4822 pos2 = mono_mb_emit_branch (mb, CEE_BRFALSE);
4823
4824 if (t->byref) {
4825 mono_mb_emit_ldarg (mb, argnum);
4826
4827 mono_mb_emit_ldstr (mb, g_strdup (spec->data.custom_data.cookie));
4828
4829 mono_mb_emit_op (mb, CEE_CALL, get_instance);
4830
4831 mono_mb_emit_ldloc (mb, conv_arg);
4832 mono_mb_emit_op (mb, CEE_CALLVIRT, marshal_managed_to_native);
4833 mono_mb_emit_byte (mb, CEE_STIND_I);
4834 }
4835
4836 /* Call CleanUpManagedData */
4837 mono_mb_emit_ldstr (mb, g_strdup (spec->data.custom_data.cookie));
4838
4839 mono_mb_emit_op (mb, CEE_CALL, get_instance);
4840
4841 mono_mb_emit_ldloc (mb, conv_arg);
4842 mono_mb_emit_op (mb, CEE_CALLVIRT, cleanup_managed);
4843
4844 mono_mb_patch_branch (mb, pos2);
4845 break;
4846
4847 default:
4848 g_assert_not_reached ();
4849 }
4850 return conv_arg;
4851 #endif
4852
4853 }
4854
4855 static int
4856 emit_marshal_asany (EmitMarshalContext *m, int argnum, MonoType *t,
4857 MonoMarshalSpec *spec,
4858 int conv_arg, MonoType **conv_arg_type,
4859 MarshalAction action)
4860 {
4861 #ifndef DISABLE_JIT
4862 MonoMethodBuilder *mb = m->mb;
4863
4864 switch (action) {
4865 case MARSHAL_ACTION_CONV_IN: {
4866 MonoMarshalNative encoding = mono_marshal_get_string_encoding (m->piinfo, NULL);
4867
4868 g_assert (t->type == MONO_TYPE_OBJECT);
4869 g_assert (!t->byref);
4870
4871 conv_arg = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
4872 mono_mb_emit_ldarg (mb, argnum);
4873 mono_mb_emit_icon (mb, encoding);
4874 mono_mb_emit_icon (mb, t->attrs);
4875 mono_mb_emit_icall (mb, mono_marshal_asany);
4876 mono_mb_emit_stloc (mb, conv_arg);
4877 break;
4878 }
4879
4880 case MARSHAL_ACTION_PUSH:
4881 mono_mb_emit_ldloc (mb, conv_arg);
4882 break;
4883
4884 case MARSHAL_ACTION_CONV_OUT: {
4885 MonoMarshalNative encoding = mono_marshal_get_string_encoding (m->piinfo, NULL);
4886
4887 mono_mb_emit_ldarg (mb, argnum);
4888 mono_mb_emit_ldloc (mb, conv_arg);
4889 mono_mb_emit_icon (mb, encoding);
4890 mono_mb_emit_icon (mb, t->attrs);
4891 mono_mb_emit_icall (mb, mono_marshal_free_asany);
4892 break;
4893 }
4894
4895 default:
4896 g_assert_not_reached ();
4897 }
4898 #endif
4899 return conv_arg;
4900 }
4901
4902 static int
4903 emit_marshal_vtype (EmitMarshalContext *m, int argnum, MonoType *t,
4904 MonoMarshalSpec *spec,
4905 int conv_arg, MonoType **conv_arg_type,
4906 MarshalAction action)
4907 {
4908 #ifndef DISABLE_JIT
4909 MonoMethodBuilder *mb = m->mb;
4910 MonoClass *klass, *date_time_class;
4911 int pos = 0, pos2;
4912
4913 klass = mono_class_from_mono_type (t);
4914
4915 date_time_class = mono_class_get_date_time_class ();
4916
4917 switch (action) {
4918 case MARSHAL_ACTION_CONV_IN:
4919 if (klass == date_time_class) {
4920 /* Convert it to an OLE DATE type */
4921 static MonoMethod *to_oadate;
4922
4923 if (!to_oadate)
4924 to_oadate = mono_class_get_method_from_name (date_time_class, "ToOADate", 0);
4925 g_assert (to_oadate);
4926
4927 conv_arg = mono_mb_add_local (mb, &mono_defaults.double_class->byval_arg);
4928
4929 if (t->byref) {
4930 mono_mb_emit_ldarg (mb, argnum);
4931 pos = mono_mb_emit_branch (mb, CEE_BRFALSE);
4932 }
4933
4934 if (!(t->byref && !(t->attrs & PARAM_ATTRIBUTE_IN) && (t->attrs & PARAM_ATTRIBUTE_OUT))) {
4935 if (!t->byref)
4936 m->csig->params [argnum - m->csig->hasthis] = &mono_defaults.double_class->byval_arg;
4937
4938 mono_mb_emit_ldarg_addr (mb, argnum);
4939 mono_mb_emit_managed_call (mb, to_oadate, NULL);
4940 mono_mb_emit_stloc (mb, conv_arg);
4941 }
4942
4943 if (t->byref)
4944 mono_mb_patch_branch (mb, pos);
4945 break;
4946 }
4947
4948 if (((klass->flags & TYPE_ATTRIBUTE_LAYOUT_MASK) == TYPE_ATTRIBUTE_EXPLICIT_LAYOUT) ||
4949 klass->blittable || klass->enumtype)
4950 break;
4951
4952 conv_arg = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
4953
4954 /* store the address of the source into local variable 0 */
4955 if (t->byref)
4956 mono_mb_emit_ldarg (mb, argnum);
4957 else
4958 mono_mb_emit_ldarg_addr (mb, argnum);
4959
4960 mono_mb_emit_stloc (mb, 0);
4961
4962 /* allocate space for the native struct and
4963 * store the address into local variable 1 (dest) */
4964 mono_mb_emit_icon (mb, mono_class_native_size (klass, NULL));
4965 mono_mb_emit_byte (mb, CEE_PREFIX1);
4966 mono_mb_emit_byte (mb, CEE_LOCALLOC);
4967 mono_mb_emit_stloc (mb, conv_arg);
4968
4969 if (t->byref) {
4970 mono_mb_emit_ldloc (mb, 0);
4971 pos = mono_mb_emit_branch (mb, CEE_BRFALSE);
4972 }
4973
4974 if (!(t->byref && !(t->attrs & PARAM_ATTRIBUTE_IN) && (t->attrs & PARAM_ATTRIBUTE_OUT))) {
4975 /* set dst_ptr */
4976 mono_mb_emit_ldloc (mb, conv_arg);
4977 mono_mb_emit_stloc (mb, 1);
4978
4979 /* emit valuetype conversion code */
4980 emit_struct_conv (mb, klass, FALSE);
4981 }
4982
4983 if (t->byref)
4984 mono_mb_patch_branch (mb, pos);
4985 break;
4986
4987 case MARSHAL_ACTION_PUSH:
4988 if (spec && spec->native == MONO_NATIVE_LPSTRUCT) {
4989 /* FIXME: */
4990 g_assert (!t->byref);
4991
4992 /* Have to change the signature since the vtype is passed byref */
4993 m->csig->params [argnum - m->csig->hasthis] = &mono_defaults.int_class->byval_arg;
4994
4995 if (((klass->flags & TYPE_ATTRIBUTE_LAYOUT_MASK) == TYPE_ATTRIBUTE_EXPLICIT_LAYOUT) ||
4996 klass->blittable || klass->enumtype)
4997 mono_mb_emit_ldarg_addr (mb, argnum);
4998 else
4999 mono_mb_emit_ldloc (mb, conv_arg);
5000 break;
5001 }
5002
5003 if (klass == date_time_class) {
5004 if (t->byref)
5005 mono_mb_emit_ldloc_addr (mb, conv_arg);
5006 else
5007 mono_mb_emit_ldloc (mb, conv_arg);
5008 break;
5009 }
5010
5011 if (((klass->flags & TYPE_ATTRIBUTE_LAYOUT_MASK) == TYPE_ATTRIBUTE_EXPLICIT_LAYOUT) ||
5012 klass->blittable || klass->enumtype) {
5013 mono_mb_emit_ldarg (mb, argnum);
5014 break;
5015 }
5016 mono_mb_emit_ldloc (mb, conv_arg);
5017 if (!t->byref) {
5018 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
5019 mono_mb_emit_op (mb, CEE_MONO_LDNATIVEOBJ, klass);
5020 }
5021 break;
5022
5023 case MARSHAL_ACTION_CONV_OUT:
5024 if (klass == date_time_class) {
5025 /* Convert from an OLE DATE type */
5026 static MonoMethod *from_oadate;
5027
5028 if (!t->byref)
5029 break;
5030
5031 if (!((t->attrs & PARAM_ATTRIBUTE_IN) && !(t->attrs & PARAM_ATTRIBUTE_OUT))) {
5032 if (!from_oadate)
5033 from_oadate = mono_class_get_method_from_name (date_time_class, "FromOADate", 1);
5034 g_assert (from_oadate);
5035
5036 mono_mb_emit_ldarg (mb, argnum);
5037 mono_mb_emit_ldloc (mb, conv_arg);
5038 mono_mb_emit_managed_call (mb, from_oadate, NULL);
5039 mono_mb_emit_op (mb, CEE_STOBJ, date_time_class);
5040 }
5041 break;
5042 }
5043
5044 if (((klass->flags & TYPE_ATTRIBUTE_LAYOUT_MASK) == TYPE_ATTRIBUTE_EXPLICIT_LAYOUT) ||
5045 klass->blittable || klass->enumtype)
5046 break;
5047
5048 if (t->byref) {
5049 /* dst = argument */
5050 mono_mb_emit_ldarg (mb, argnum);
5051 mono_mb_emit_stloc (mb, 1);
5052
5053 mono_mb_emit_ldloc (mb, 1);
5054 pos = mono_mb_emit_branch (mb, CEE_BRFALSE);
5055
5056 if (!((t->attrs & PARAM_ATTRIBUTE_IN) && !(t->attrs & PARAM_ATTRIBUTE_OUT))) {
5057 /* src = tmp_locals [i] */
5058 mono_mb_emit_ldloc (mb, conv_arg);
5059 mono_mb_emit_stloc (mb, 0);
5060
5061 /* emit valuetype conversion code */
5062 emit_struct_conv (mb, klass, TRUE);
5063 }
5064 }
5065
5066 emit_struct_free (mb, klass, conv_arg);
5067
5068 if (t->byref)
5069 mono_mb_patch_branch (mb, pos);
5070 break;
5071
5072 case MARSHAL_ACTION_CONV_RESULT:
5073 if (((klass->flags & TYPE_ATTRIBUTE_LAYOUT_MASK) == TYPE_ATTRIBUTE_EXPLICIT_LAYOUT) ||
5074 klass->blittable) {
5075 mono_mb_emit_stloc (mb, 3);
5076 break;
5077 }
5078
5079 /* load pointer to returned value type */
5080 g_assert (m->vtaddr_var);
5081 mono_mb_emit_ldloc (mb, m->vtaddr_var);
5082 /* store the address of the source into local variable 0 */
5083 mono_mb_emit_stloc (mb, 0);
5084 /* set dst_ptr */
5085 mono_mb_emit_ldloc_addr (mb, 3);
5086 mono_mb_emit_stloc (mb, 1);
5087
5088 /* emit valuetype conversion code */
5089 emit_struct_conv (mb, klass, TRUE);
5090 break;
5091
5092 case MARSHAL_ACTION_MANAGED_CONV_IN:
5093 if (((klass->flags & TYPE_ATTRIBUTE_LAYOUT_MASK) == TYPE_ATTRIBUTE_EXPLICIT_LAYOUT) ||
5094 klass->blittable || klass->enumtype) {
5095 conv_arg = 0;
5096 break;
5097 }
5098
5099 conv_arg = mono_mb_add_local (mb, &klass->byval_arg);
5100
5101 if (t->attrs & PARAM_ATTRIBUTE_OUT)
5102 break;
5103
5104 if (t->byref)
5105 mono_mb_emit_ldarg (mb, argnum);
5106 else
5107 mono_mb_emit_ldarg_addr (mb, argnum);
5108 mono_mb_emit_stloc (mb, 0);
5109
5110 if (t->byref) {
5111 mono_mb_emit_ldloc (mb, 0);
5112 pos = mono_mb_emit_branch (mb, CEE_BRFALSE);
5113 }
5114
5115 mono_mb_emit_ldloc_addr (mb, conv_arg);
5116 mono_mb_emit_stloc (mb, 1);
5117
5118 /* emit valuetype conversion code */
5119 emit_struct_conv (mb, klass, TRUE);
5120
5121 if (t->byref)
5122 mono_mb_patch_branch (mb, pos);
5123 break;
5124
5125 case MARSHAL_ACTION_MANAGED_CONV_OUT:
5126 if (((klass->flags & TYPE_ATTRIBUTE_LAYOUT_MASK) == TYPE_ATTRIBUTE_EXPLICIT_LAYOUT) ||
5127 klass->blittable || klass->enumtype) {
5128 break;
5129 }
5130
5131 if (t->byref && (t->attrs & PARAM_ATTRIBUTE_IN) && !(t->attrs & PARAM_ATTRIBUTE_OUT))
5132 break;
5133
5134 /* Check for null */
5135 mono_mb_emit_ldarg (mb, argnum);
5136 pos2 = mono_mb_emit_branch (mb, CEE_BRFALSE);
5137
5138 /* Set src */
5139 mono_mb_emit_ldloc_addr (mb, conv_arg);
5140 mono_mb_emit_stloc (mb, 0);
5141
5142 /* Set dest */
5143 mono_mb_emit_ldarg (mb, argnum);
5144 mono_mb_emit_stloc (mb, 1);
5145
5146 /* emit valuetype conversion code */
5147 emit_struct_conv (mb, klass, FALSE);
5148
5149 mono_mb_patch_branch (mb, pos2);
5150 break;
5151
5152 case MARSHAL_ACTION_MANAGED_CONV_RESULT:
5153 if (((klass->flags & TYPE_ATTRIBUTE_LAYOUT_MASK) == TYPE_ATTRIBUTE_EXPLICIT_LAYOUT) ||
5154 klass->blittable || klass->enumtype) {
5155 mono_mb_emit_stloc (mb, 3);
5156 m->retobj_var = 0;
5157 break;
5158 }
5159
5160 /* load pointer to returned value type */
5161 g_assert (m->vtaddr_var);
5162 mono_mb_emit_ldloc (mb, m->vtaddr_var);
5163
5164 /* store the address of the source into local variable 0 */
5165 mono_mb_emit_stloc (mb, 0);
5166 /* allocate space for the native struct and
5167 * store the address into dst_ptr */
5168 m->retobj_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
5169 m->retobj_class = klass;
5170 g_assert (m->retobj_var);
5171 mono_mb_emit_icon (mb, mono_class_native_size (klass, NULL));
5172 mono_mb_emit_byte (mb, CEE_CONV_I);
5173 mono_mb_emit_icall (mb, ves_icall_marshal_alloc);
5174 mono_mb_emit_stloc (mb, 1);
5175 mono_mb_emit_ldloc (mb, 1);
5176 mono_mb_emit_stloc (mb, m->retobj_var);
5177
5178 /* emit valuetype conversion code */
5179 emit_struct_conv (mb, klass, FALSE);
5180 break;
5181
5182 default:
5183 g_assert_not_reached ();
5184 }
5185 #endif
5186 return conv_arg;
5187 }
5188
5189 static int
5190 emit_marshal_string (EmitMarshalContext *m, int argnum, MonoType *t,
5191 MonoMarshalSpec *spec,
5192 int conv_arg, MonoType **conv_arg_type,
5193 MarshalAction action)
5194 {
5195 #ifdef DISABLE_JIT
5196 switch (action) {
5197 case MARSHAL_ACTION_CONV_IN:
5198 *conv_arg_type = &mono_defaults.int_class->byval_arg;
5199 break;
5200 case MARSHAL_ACTION_MANAGED_CONV_IN:
5201 *conv_arg_type = &mono_defaults.int_class->byval_arg;
5202 break;
5203 }
5204 #else
5205 MonoMethodBuilder *mb = m->mb;
5206 MonoMarshalNative encoding = mono_marshal_get_string_encoding (m->piinfo, spec);
5207 MonoMarshalConv conv = mono_marshal_get_string_to_ptr_conv (m->piinfo, spec);
5208 gboolean need_free;
5209
5210 switch (action) {
5211 case MARSHAL_ACTION_CONV_IN:
5212 *conv_arg_type = &mono_defaults.int_class->byval_arg;
5213 conv_arg = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
5214
5215 if (t->byref) {
5216 if (t->attrs & PARAM_ATTRIBUTE_OUT)
5217 break;
5218
5219 mono_mb_emit_ldarg (mb, argnum);
5220 mono_mb_emit_byte (mb, CEE_LDIND_I);
5221 } else {
5222 mono_mb_emit_ldarg (mb, argnum);
5223 }
5224
5225 if (conv == MONO_MARSHAL_CONV_INVALID) {
5226 char *msg = g_strdup_printf ("string marshalling conversion %d not implemented", encoding);
5227 mono_mb_emit_exception_marshal_directive (mb, msg);
5228 } else {
5229 mono_mb_emit_icall (mb, conv_to_icall (conv, NULL));
5230
5231 mono_mb_emit_stloc (mb, conv_arg);
5232 }
5233 break;
5234
5235 case MARSHAL_ACTION_CONV_OUT:
5236 conv = mono_marshal_get_ptr_to_string_conv (m->piinfo, spec, &need_free);
5237 if (conv == MONO_MARSHAL_CONV_INVALID) {
5238 char *msg = g_strdup_printf ("string marshalling conversion %d not implemented", encoding);
5239 mono_mb_emit_exception_marshal_directive (mb, msg);
5240 break;
5241 }
5242
5243 if (encoding == MONO_NATIVE_VBBYREFSTR) {
5244 static MonoMethod *m;
5245
5246 if (!m) {
5247 m = mono_class_get_method_from_name_flags (mono_defaults.string_class, "get_Length", -1, 0);
5248 g_assert (m);
5249 }
5250
5251 if (!t->byref) {
5252 char *msg = g_strdup_printf ("VBByRefStr marshalling requires a ref parameter.", encoding);
5253 mono_mb_emit_exception_marshal_directive (mb, msg);
5254 break;
5255 }
5256
5257 /*
5258 * Have to allocate a new string with the same length as the original, and
5259 * copy the contents of the buffer pointed to by CONV_ARG into it.
5260 */
5261 g_assert (t->byref);
5262 mono_mb_emit_ldarg (mb, argnum);
5263 mono_mb_emit_ldloc (mb, conv_arg);
5264 mono_mb_emit_ldarg (mb, argnum);
5265 mono_mb_emit_byte (mb, CEE_LDIND_I);
5266 mono_mb_emit_managed_call (mb, m, NULL);
5267 mono_mb_emit_icall (mb, mono_string_new_len_wrapper);
5268 mono_mb_emit_byte (mb, CEE_STIND_REF);
5269 } else if (t->byref && (t->attrs & PARAM_ATTRIBUTE_OUT || !(t->attrs & PARAM_ATTRIBUTE_IN))) {
5270 int stind_op;
5271 mono_mb_emit_ldarg (mb, argnum);
5272 mono_mb_emit_ldloc (mb, conv_arg);
5273 mono_mb_emit_icall (mb, conv_to_icall (conv, &stind_op));
5274 mono_mb_emit_byte (mb, stind_op);
5275 need_free = TRUE;
5276 }
5277
5278 if (need_free) {
5279 mono_mb_emit_ldloc (mb, conv_arg);
5280 if (conv == MONO_MARSHAL_CONV_BSTR_STR)
5281 mono_mb_emit_icall (mb, mono_free_bstr);
5282 else
5283 mono_mb_emit_icall (mb, mono_marshal_free);
5284 }
5285 break;
5286
5287 case MARSHAL_ACTION_PUSH:
5288 if (t->byref && encoding != MONO_NATIVE_VBBYREFSTR)
5289 mono_mb_emit_ldloc_addr (mb, conv_arg);
5290 else
5291 mono_mb_emit_ldloc (mb, conv_arg);
5292 break;
5293
5294 case MARSHAL_ACTION_CONV_RESULT:
5295 mono_mb_emit_stloc (mb, 0);
5296
5297 conv = mono_marshal_get_ptr_to_string_conv (m->piinfo, spec, &need_free);
5298 if (conv == MONO_MARSHAL_CONV_INVALID) {
5299 char *msg = g_strdup_printf ("string marshalling conversion %d not implemented", encoding);
5300 mono_mb_emit_exception_marshal_directive (mb, msg);
5301 break;
5302 }
5303
5304 mono_mb_emit_ldloc (mb, 0);
5305 mono_mb_emit_icall (mb, conv_to_icall (conv, NULL));
5306 mono_mb_emit_stloc (mb, 3);
5307
5308 /* free the string */
5309 mono_mb_emit_ldloc (mb, 0);
5310 if (conv == MONO_MARSHAL_CONV_BSTR_STR)
5311 mono_mb_emit_icall (mb, mono_free_bstr);
5312 else
5313 mono_mb_emit_icall (mb, mono_marshal_free);
5314 break;
5315
5316 case MARSHAL_ACTION_MANAGED_CONV_IN:
5317 conv_arg = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
5318
5319 *conv_arg_type = &mono_defaults.int_class->byval_arg;
5320
5321 if (t->byref) {
5322 if (t->attrs & PARAM_ATTRIBUTE_OUT)
5323 break;
5324 }
5325
5326 conv = mono_marshal_get_ptr_to_string_conv (m->piinfo, spec, &need_free);
5327 if (conv == MONO_MARSHAL_CONV_INVALID) {
5328 char *msg = g_strdup_printf ("string marshalling conversion %d not implemented", encoding);
5329 mono_mb_emit_exception_marshal_directive (mb, msg);
5330 break;
5331 }
5332
5333 mono_mb_emit_ldarg (mb, argnum);
5334 if (t->byref)
5335 mono_mb_emit_byte (mb, CEE_LDIND_I);
5336 mono_mb_emit_icall (mb, conv_to_icall (conv, NULL));
5337 mono_mb_emit_stloc (mb, conv_arg);
5338 break;
5339
5340 case MARSHAL_ACTION_MANAGED_CONV_OUT:
5341 if (t->byref) {
5342 if (conv_arg) {
5343 int stind_op;
5344 mono_mb_emit_ldarg (mb, argnum);
5345 mono_mb_emit_ldloc (mb, conv_arg);
5346 mono_mb_emit_icall (mb, conv_to_icall (conv, &stind_op));
5347 mono_mb_emit_byte (mb, stind_op);
5348 }
5349 }
5350 break;
5351
5352 case MARSHAL_ACTION_MANAGED_CONV_RESULT:
5353 if (conv_to_icall (conv, NULL) == mono_marshal_string_to_utf16)
5354 /* We need to make a copy so the caller is able to free it */
5355 mono_mb_emit_icall (mb, mono_marshal_string_to_utf16_copy);
5356 else
5357 mono_mb_emit_icall (mb, conv_to_icall (conv, NULL));
5358 mono_mb_emit_stloc (mb, 3);
5359 break;
5360
5361 default:
5362 g_assert_not_reached ();
5363 }
5364 #endif
5365 return conv_arg;
5366 }
5367
5368
5369 static int
5370 emit_marshal_safehandle (EmitMarshalContext *m, int argnum, MonoType *t,
5371 MonoMarshalSpec *spec, int conv_arg,
5372 MonoType **conv_arg_type, MarshalAction action)
5373 {
5374 #ifdef DISABLE_JIT
5375 if (action == MARSHAL_ACTION_CONV_IN)
5376 *conv_arg_type = &mono_defaults.int_class->byval_arg;
5377 #else
5378 MonoMethodBuilder *mb = m->mb;
5379
5380 switch (action){
5381 case MARSHAL_ACTION_CONV_IN: {
5382 MonoType *intptr_type;
5383 int dar_release_slot, pos;
5384
5385 intptr_type = &mono_defaults.int_class->byval_arg;
5386 conv_arg = mono_mb_add_local (mb, intptr_type);
5387 *conv_arg_type = intptr_type;
5388
5389 if (!sh_dangerous_add_ref)
5390 init_safe_handle ();
5391
5392 mono_mb_emit_ldarg (mb, argnum);
5393 pos = mono_mb_emit_branch (mb, CEE_BRTRUE);
5394 mono_mb_emit_exception (mb, "ArgumentNullException", NULL);
5395
5396 mono_mb_patch_branch (mb, pos);
5397 if (t->byref){
5398 /*
5399 * My tests in show that ref SafeHandles are not really
5400 * passed as ref objects. Instead a NULL is passed as the
5401 * value of the ref
5402 */
5403 mono_mb_emit_icon (mb, 0);
5404 mono_mb_emit_stloc (mb, conv_arg);
5405 break;
5406 }
5407
5408 /* Create local to hold the ref parameter to DangerousAddRef */
5409 dar_release_slot = mono_mb_add_local (mb, &mono_defaults.boolean_class->byval_arg);
5410
5411 /* set release = false; */
5412 mono_mb_emit_icon (mb, 0);
5413 mono_mb_emit_stloc (mb, dar_release_slot);
5414
5415 /* safehandle.DangerousAddRef (ref release) */
5416 mono_mb_emit_ldarg (mb, argnum);
5417 mono_mb_emit_ldloc_addr (mb, dar_release_slot);
5418 mono_mb_emit_managed_call (mb, sh_dangerous_add_ref, NULL);
5419
5420 /* Pull the handle field from SafeHandle */
5421 mono_mb_emit_ldarg (mb, argnum);
5422 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoSafeHandle, handle));
5423 mono_mb_emit_byte (mb, CEE_LDIND_I);
5424 mono_mb_emit_stloc (mb, conv_arg);
5425
5426 break;
5427 }
5428
5429 case MARSHAL_ACTION_PUSH:
5430 if (t->byref)
5431 mono_mb_emit_ldloc_addr (mb, conv_arg);
5432 else
5433 mono_mb_emit_ldloc (mb, conv_arg);
5434 break;
5435
5436 case MARSHAL_ACTION_CONV_OUT: {
5437 /* The slot for the boolean is the next temporary created after conv_arg, see the CONV_IN code */
5438 int dar_release_slot = conv_arg + 1;
5439 int label_next;
5440
5441 if (!sh_dangerous_release)
5442 init_safe_handle ();
5443
5444 if (t->byref){
5445 MonoMethod *ctor;
5446
5447 /*
5448 * My tests indicate that ref SafeHandles parameters are not actually
5449 * passed by ref, but instead a new Handle is created regardless of
5450 * whether a change happens in the unmanaged side.
5451 *
5452 * Also, the Handle is created before calling into unmanaged code,
5453 * but we do not support that mechanism (getting to the original
5454 * handle) and it makes no difference where we create this
5455 */
5456 ctor = mono_class_get_method_from_name (t->data.klass, ".ctor", 0);
5457 if (ctor == NULL){
5458 mono_mb_emit_exception (mb, "MissingMethodException", "paramterless constructor required");
5459 break;
5460 }
5461 /* refval = new SafeHandleDerived ()*/
5462 mono_mb_emit_ldarg (mb, argnum);
5463 mono_mb_emit_op (mb, CEE_NEWOBJ, ctor);
5464 mono_mb_emit_byte (mb, CEE_STIND_REF);
5465
5466 /* refval.handle = returned_handle */
5467 mono_mb_emit_ldarg (mb, argnum);
5468 mono_mb_emit_byte (mb, CEE_LDIND_REF);
5469 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoSafeHandle, handle));
5470 mono_mb_emit_ldloc (mb, conv_arg);
5471 mono_mb_emit_byte (mb, CEE_STIND_I);
5472 } else {
5473 mono_mb_emit_ldloc (mb, dar_release_slot);
5474 label_next = mono_mb_emit_branch (mb, CEE_BRFALSE);
5475 mono_mb_emit_ldarg (mb, argnum);
5476 mono_mb_emit_managed_call (mb, sh_dangerous_release, NULL);
5477 mono_mb_patch_branch (mb, label_next);
5478 }
5479 break;
5480 }
5481
5482 case MARSHAL_ACTION_CONV_RESULT: {
5483 MonoMethod *ctor = NULL;
5484 int intptr_handle_slot;
5485
5486 if (t->data.klass->flags & TYPE_ATTRIBUTE_ABSTRACT){
5487 mono_mb_emit_byte (mb, CEE_POP);
5488 mono_mb_emit_exception_marshal_directive (mb, g_strdup ("Returned SafeHandles should not be abstract"));
5489 break;
5490 }
5491
5492 ctor = mono_class_get_method_from_name (t->data.klass, ".ctor", 0);
5493 if (ctor == NULL){
5494 mono_mb_emit_byte (mb, CEE_POP);
5495 mono_mb_emit_exception (mb, "MissingMethodException", "paramterless constructor required");
5496 break;
5497 }
5498 /* Store the IntPtr results into a local */
5499 intptr_handle_slot = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
5500 mono_mb_emit_stloc (mb, intptr_handle_slot);
5501
5502 /* Create return value */
5503 mono_mb_emit_op (mb, CEE_NEWOBJ, ctor);
5504 mono_mb_emit_stloc (mb, 3);
5505
5506 /* Set the return.handle to the value, am using ldflda, not sure if thats a good idea */
5507 mono_mb_emit_ldloc (mb, 3);
5508 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoSafeHandle, handle));
5509 mono_mb_emit_ldloc (mb, intptr_handle_slot);
5510 mono_mb_emit_byte (mb, CEE_STIND_I);
5511 break;
5512 }
5513
5514 case MARSHAL_ACTION_MANAGED_CONV_IN:
5515 fprintf (stderr, "mono/marshal: SafeHandles missing MANAGED_CONV_IN\n");
5516 break;
5517
5518 case MARSHAL_ACTION_MANAGED_CONV_OUT:
5519 fprintf (stderr, "mono/marshal: SafeHandles missing MANAGED_CONV_OUT\n");
5520 break;
5521
5522 case MARSHAL_ACTION_MANAGED_CONV_RESULT:
5523 fprintf (stderr, "mono/marshal: SafeHandles missing MANAGED_CONV_RESULT\n");
5524 break;
5525 default:
5526 printf ("Unhandled case for MarshalAction: %d\n", action);
5527 }
5528 #endif
5529 return conv_arg;
5530 }
5531
5532
5533 static int
5534 emit_marshal_handleref (EmitMarshalContext *m, int argnum, MonoType *t,
5535 MonoMarshalSpec *spec, int conv_arg,
5536 MonoType **conv_arg_type, MarshalAction action)
5537 {
5538 #ifdef DISABLE_JIT
5539 if (action == MARSHAL_ACTION_CONV_IN)
5540 *conv_arg_type = &mono_defaults.int_class->byval_arg;
5541 #else
5542 MonoMethodBuilder *mb = m->mb;
5543
5544 switch (action){
5545 case MARSHAL_ACTION_CONV_IN: {
5546 MonoType *intptr_type;
5547
5548 intptr_type = &mono_defaults.int_class->byval_arg;
5549 conv_arg = mono_mb_add_local (mb, intptr_type);
5550 *conv_arg_type = intptr_type;
5551
5552 if (t->byref){
5553 char *msg = g_strdup ("HandleRefs can not be returned from unmanaged code (or passed by ref)");
5554 mono_mb_emit_exception_marshal_directive (mb, msg);
5555 break;
5556 }
5557 mono_mb_emit_ldarg_addr (mb, argnum);
5558 mono_mb_emit_icon (mb, MONO_STRUCT_OFFSET (MonoHandleRef, handle));
5559 mono_mb_emit_byte (mb, CEE_ADD);
5560 mono_mb_emit_byte (mb, CEE_LDIND_I);
5561 mono_mb_emit_stloc (mb, conv_arg);
5562 break;
5563 }
5564
5565 case MARSHAL_ACTION_PUSH:
5566 mono_mb_emit_ldloc (mb, conv_arg);
5567 break;
5568
5569 case MARSHAL_ACTION_CONV_OUT: {
5570 /* no resource release required */
5571 break;
5572 }
5573
5574 case MARSHAL_ACTION_CONV_RESULT: {
5575 char *msg = g_strdup ("HandleRefs can not be returned from unmanaged code (or passed by ref)");
5576 mono_mb_emit_exception_marshal_directive (mb, msg);
5577 break;
5578 }
5579
5580 case MARSHAL_ACTION_MANAGED_CONV_IN:
5581 fprintf (stderr, "mono/marshal: SafeHandles missing MANAGED_CONV_IN\n");
5582 break;
5583
5584 case MARSHAL_ACTION_MANAGED_CONV_OUT:
5585 fprintf (stderr, "mono/marshal: SafeHandles missing MANAGED_CONV_OUT\n");
5586 break;
5587
5588 case MARSHAL_ACTION_MANAGED_CONV_RESULT:
5589 fprintf (stderr, "mono/marshal: SafeHandles missing MANAGED_CONV_RESULT\n");
5590 break;
5591 default:
5592 fprintf (stderr, "Unhandled case for MarshalAction: %d\n", action);
5593 }
5594 #endif
5595 return conv_arg;
5596 }
5597
5598
5599 static int
5600 emit_marshal_object (EmitMarshalContext *m, int argnum, MonoType *t,
5601 MonoMarshalSpec *spec,
5602 int conv_arg, MonoType **conv_arg_type,
5603 MarshalAction action)
5604 {
5605 #ifdef DISABLE_JIT
5606 if (action == MARSHAL_ACTION_CONV_IN)
5607 *conv_arg_type = &mono_defaults.int_class->byval_arg;
5608 #else
5609 MonoMethodBuilder *mb = m->mb;
5610 MonoClass *klass = mono_class_from_mono_type (t);
5611 int pos, pos2, loc;
5612
5613 switch (action) {
5614 case MARSHAL_ACTION_CONV_IN:
5615 *conv_arg_type = &mono_defaults.int_class->byval_arg;
5616 conv_arg = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
5617
5618 m->orig_conv_args [argnum] = 0;
5619
5620 if (mono_class_from_mono_type (t) == mono_defaults.object_class) {
5621 char *msg = g_strdup_printf ("Marshalling of type object is not implemented");
5622 mono_mb_emit_exception_marshal_directive (mb, msg);
5623 break;
5624 }
5625
5626 if (klass->delegate) {
5627 if (t->byref) {
5628 if (!(t->attrs & PARAM_ATTRIBUTE_OUT)) {
5629 char *msg = g_strdup_printf ("Byref marshalling of delegates is not implemented.");
5630 mono_mb_emit_exception_marshal_directive (mb, msg);
5631 }
5632 mono_mb_emit_byte (mb, CEE_LDNULL);
5633 mono_mb_emit_stloc (mb, conv_arg);
5634 } else {
5635 mono_mb_emit_ldarg (mb, argnum);
5636 mono_mb_emit_icall (mb, conv_to_icall (MONO_MARSHAL_CONV_DEL_FTN, NULL));
5637 mono_mb_emit_stloc (mb, conv_arg);
5638 }
5639 } else if (klass == mono_defaults.stringbuilder_class) {
5640 MonoMarshalNative encoding = mono_marshal_get_string_encoding (m->piinfo, spec);
5641 MonoMarshalConv conv = mono_marshal_get_stringbuilder_to_ptr_conv (m->piinfo, spec);
5642
5643 #if 0
5644 if (t->byref) {
5645 if (!(t->attrs & PARAM_ATTRIBUTE_OUT)) {
5646 char *msg = g_strdup_printf ("Byref marshalling of stringbuilders is not implemented.");
5647 mono_mb_emit_exception_marshal_directive (mb, msg);
5648 }
5649 break;
5650 }
5651 #endif
5652
5653 if (t->byref && !(t->attrs & PARAM_ATTRIBUTE_IN) && (t->attrs & PARAM_ATTRIBUTE_OUT))
5654 break;
5655
5656 if (conv == MONO_MARSHAL_CONV_INVALID) {
5657 char *msg = g_strdup_printf ("stringbuilder marshalling conversion %d not implemented", encoding);
5658 mono_mb_emit_exception_marshal_directive (mb, msg);
5659 break;
5660 }
5661
5662 mono_mb_emit_ldarg (mb, argnum);
5663 if (t->byref)
5664 mono_mb_emit_byte (mb, CEE_LDIND_I);
5665
5666 mono_mb_emit_icall (mb, conv_to_icall (conv, NULL));
5667 mono_mb_emit_stloc (mb, conv_arg);
5668 } else if (klass->blittable) {
5669 mono_mb_emit_byte (mb, CEE_LDNULL);
5670 mono_mb_emit_stloc (mb, conv_arg);
5671
5672 mono_mb_emit_ldarg (mb, argnum);
5673 pos = mono_mb_emit_branch (mb, CEE_BRFALSE);
5674
5675 mono_mb_emit_ldarg (mb, argnum);
5676 mono_mb_emit_ldflda (mb, sizeof (MonoObject));
5677 mono_mb_emit_stloc (mb, conv_arg);
5678
5679 mono_mb_patch_branch (mb, pos);
5680 break;
5681 } else {
5682 mono_mb_emit_byte (mb, CEE_LDNULL);
5683 mono_mb_emit_stloc (mb, conv_arg);
5684
5685 if (t->byref) {
5686 /* we dont need any conversions for out parameters */
5687 if (t->attrs & PARAM_ATTRIBUTE_OUT)
5688 break;
5689
5690 mono_mb_emit_ldarg (mb, argnum);
5691 mono_mb_emit_byte (mb, CEE_LDIND_I);
5692
5693 } else {
5694 mono_mb_emit_ldarg (mb, argnum);
5695 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
5696 mono_mb_emit_byte (mb, CEE_MONO_OBJADDR);
5697 }
5698
5699 /* store the address of the source into local variable 0 */
5700 mono_mb_emit_stloc (mb, 0);
5701 mono_mb_emit_ldloc (mb, 0);
5702 pos = mono_mb_emit_branch (mb, CEE_BRFALSE);
5703
5704 /* allocate space for the native struct and store the address */
5705 mono_mb_emit_icon (mb, mono_class_native_size (klass, NULL));
5706 mono_mb_emit_byte (mb, CEE_PREFIX1);
5707 mono_mb_emit_byte (mb, CEE_LOCALLOC);
5708 mono_mb_emit_stloc (mb, conv_arg);
5709
5710 if (t->byref) {
5711 /* Need to store the original buffer so we can free it later */
5712 m->orig_conv_args [argnum] = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
5713 mono_mb_emit_ldloc (mb, conv_arg);
5714 mono_mb_emit_stloc (mb, m->orig_conv_args [argnum]);
5715 }
5716
5717 /* set the src_ptr */
5718 mono_mb_emit_ldloc (mb, 0);
5719 mono_mb_emit_ldflda (mb, sizeof (MonoObject));
5720 mono_mb_emit_stloc (mb, 0);
5721
5722 /* set dst_ptr */
5723 mono_mb_emit_ldloc (mb, conv_arg);
5724 mono_mb_emit_stloc (mb, 1);
5725
5726 /* emit valuetype conversion code */
5727 emit_struct_conv (mb, klass, FALSE);
5728
5729 mono_mb_patch_branch (mb, pos);
5730 }
5731 break;
5732
5733 case MARSHAL_ACTION_CONV_OUT:
5734 if (klass == mono_defaults.stringbuilder_class) {
5735 gboolean need_free;
5736 MonoMarshalNative encoding;
5737 MonoMarshalConv conv;
5738
5739 encoding = mono_marshal_get_string_encoding (m->piinfo, spec);
5740 conv = mono_marshal_get_ptr_to_stringbuilder_conv (m->piinfo, spec, &need_free);
5741
5742 g_assert (encoding != -1);
5743
5744 if (t->byref) {
5745 //g_assert (!(t->attrs & PARAM_ATTRIBUTE_OUT));
5746
5747 need_free = TRUE;
5748
5749 mono_mb_emit_ldarg (mb, argnum);
5750 mono_mb_emit_ldloc (mb, conv_arg);
5751
5752 switch (encoding) {
5753 case MONO_NATIVE_LPWSTR:
5754 mono_mb_emit_icall (mb, mono_string_utf16_to_builder2);
5755 break;
5756 case MONO_NATIVE_LPSTR:
5757 mono_mb_emit_icall (mb, mono_string_utf8_to_builder2);
5758 break;
5759 default:
5760 g_assert_not_reached ();
5761 }
5762
5763 mono_mb_emit_byte (mb, CEE_STIND_REF);
5764 } else {
5765 mono_mb_emit_ldarg (mb, argnum);
5766 mono_mb_emit_ldloc (mb, conv_arg);
5767
5768 mono_mb_emit_icall (mb, conv_to_icall (conv, NULL));
5769 }
5770
5771 if (need_free) {
5772 mono_mb_emit_ldloc (mb, conv_arg);
5773 mono_mb_emit_icall (mb, mono_marshal_free);
5774 }
5775 break;
5776 }
5777
5778 if (klass->delegate) {
5779 if (t->byref) {
5780 mono_mb_emit_ldarg (mb, argnum);
5781 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
5782 mono_mb_emit_op (mb, CEE_MONO_CLASSCONST, klass);
5783 mono_mb_emit_ldloc (mb, conv_arg);
5784 mono_mb_emit_icall (mb, conv_to_icall (MONO_MARSHAL_CONV_FTN_DEL, NULL));
5785 mono_mb_emit_byte (mb, CEE_STIND_REF);
5786 }
5787 break;
5788 }
5789
5790 if (t->byref && (t->attrs & PARAM_ATTRIBUTE_OUT)) {
5791 /* allocate a new object */
5792 mono_mb_emit_ldarg (mb, argnum);
5793 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
5794 mono_mb_emit_op (mb, CEE_MONO_NEWOBJ, klass);
5795 mono_mb_emit_byte (mb, CEE_STIND_REF);
5796 }
5797
5798 /* dst = *argument */
5799 mono_mb_emit_ldarg (mb, argnum);
5800
5801 if (t->byref)
5802 mono_mb_emit_byte (mb, CEE_LDIND_I);
5803
5804 mono_mb_emit_stloc (mb, 1);
5805
5806 mono_mb_emit_ldloc (mb, 1);
5807 pos = mono_mb_emit_branch (mb, CEE_BRFALSE);
5808
5809 if (t->byref || (t->attrs & PARAM_ATTRIBUTE_OUT)) {
5810 mono_mb_emit_ldloc (mb, 1);
5811 mono_mb_emit_icon (mb, sizeof (MonoObject));
5812 mono_mb_emit_byte (mb, CEE_ADD);
5813 mono_mb_emit_stloc (mb, 1);
5814
5815 /* src = tmp_locals [i] */
5816 mono_mb_emit_ldloc (mb, conv_arg);
5817 mono_mb_emit_stloc (mb, 0);
5818
5819 /* emit valuetype conversion code */
5820 emit_struct_conv (mb, klass, TRUE);
5821
5822 /* Free the structure returned by the native code */
5823 emit_struct_free (mb, klass, conv_arg);
5824
5825 if (m->orig_conv_args [argnum]) {
5826 /*
5827 * If the native function changed the pointer, then free
5828 * the original structure plus the new pointer.
5829 */
5830 mono_mb_emit_ldloc (mb, m->orig_conv_args [argnum]);
5831 mono_mb_emit_ldloc (mb, conv_arg);
5832 pos2 = mono_mb_emit_branch (mb, CEE_BEQ);
5833
5834 if (!(t->attrs & PARAM_ATTRIBUTE_OUT)) {
5835 g_assert (m->orig_conv_args [argnum]);
5836
5837 emit_struct_free (mb, klass, m->orig_conv_args [argnum]);
5838 }
5839
5840 mono_mb_emit_ldloc (mb, conv_arg);
5841 mono_mb_emit_icall (mb, mono_marshal_free);
5842
5843 mono_mb_patch_branch (mb, pos2);
5844 }
5845 }
5846 else
5847 /* Free the original structure passed to native code */
5848 emit_struct_free (mb, klass, conv_arg);
5849
5850 mono_mb_patch_branch (mb, pos);
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 if (klass->delegate) {
5862 g_assert (!t->byref);
5863 mono_mb_emit_stloc (mb, 0);
5864 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
5865 mono_mb_emit_op (mb, CEE_MONO_CLASSCONST, klass);
5866 mono_mb_emit_ldloc (mb, 0);
5867 mono_mb_emit_icall (mb, conv_to_icall (MONO_MARSHAL_CONV_FTN_DEL, NULL));
5868 mono_mb_emit_stloc (mb, 3);
5869 } else {
5870 /* set src */
5871 mono_mb_emit_stloc (mb, 0);
5872
5873 /* Make a copy since emit_conv modifies local 0 */
5874 loc = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
5875 mono_mb_emit_ldloc (mb, 0);
5876 mono_mb_emit_stloc (mb, loc);
5877
5878 mono_mb_emit_byte (mb, CEE_LDNULL);
5879 mono_mb_emit_stloc (mb, 3);
5880
5881 mono_mb_emit_ldloc (mb, 0);
5882 pos = mono_mb_emit_branch (mb, CEE_BRFALSE);
5883
5884 /* allocate result object */
5885
5886 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
5887 mono_mb_emit_op (mb, CEE_MONO_NEWOBJ, klass);
5888 mono_mb_emit_stloc (mb, 3);
5889
5890 /* set dst */
5891
5892 mono_mb_emit_ldloc (mb, 3);
5893 mono_mb_emit_ldflda (mb, sizeof (MonoObject));
5894 mono_mb_emit_stloc (mb, 1);
5895
5896 /* emit conversion code */
5897 emit_struct_conv (mb, klass, TRUE);
5898
5899 emit_struct_free (mb, klass, loc);
5900
5901 /* Free the pointer allocated by unmanaged code */
5902 mono_mb_emit_ldloc (mb, loc);
5903 mono_mb_emit_icall (mb, mono_marshal_free);
5904 mono_mb_patch_branch (mb, pos);
5905 }
5906 break;
5907
5908 case MARSHAL_ACTION_MANAGED_CONV_IN:
5909 conv_arg = mono_mb_add_local (mb, &klass->byval_arg);
5910
5911 if (klass->delegate) {
5912 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
5913 mono_mb_emit_op (mb, CEE_MONO_CLASSCONST, klass);
5914 mono_mb_emit_ldarg (mb, argnum);
5915 if (t->byref)
5916 mono_mb_emit_byte (mb, CEE_LDIND_I);
5917 mono_mb_emit_icall (mb, conv_to_icall (MONO_MARSHAL_CONV_FTN_DEL, NULL));
5918 mono_mb_emit_stloc (mb, conv_arg);
5919 break;
5920 }
5921
5922 if (klass == mono_defaults.stringbuilder_class) {
5923 MonoMarshalNative encoding;
5924
5925 encoding = mono_marshal_get_string_encoding (m->piinfo, spec);
5926
5927 // FIXME:
5928 g_assert (encoding == MONO_NATIVE_LPSTR);
5929
5930 g_assert (!t->byref);
5931 g_assert (encoding != -1);
5932
5933 mono_mb_emit_ldarg (mb, argnum);
5934 mono_mb_emit_icall (mb, mono_string_utf8_to_builder2);
5935 mono_mb_emit_stloc (mb, conv_arg);
5936 break;
5937 }
5938
5939 /* The class can not have an automatic layout */
5940 if ((klass->flags & TYPE_ATTRIBUTE_LAYOUT_MASK) == TYPE_ATTRIBUTE_AUTO_LAYOUT) {
5941 mono_mb_emit_auto_layout_exception (mb, klass);
5942 break;
5943 }
5944
5945 if (t->attrs & PARAM_ATTRIBUTE_OUT) {
5946 mono_mb_emit_byte (mb, CEE_LDNULL);
5947 mono_mb_emit_stloc (mb, conv_arg);
5948 break;
5949 }
5950
5951 /* Set src */
5952 mono_mb_emit_ldarg (mb, argnum);
5953 if (t->byref) {
5954 int pos2;
5955
5956 /* Check for NULL and raise an exception */
5957 pos2 = mono_mb_emit_branch (mb, CEE_BRTRUE);
5958
5959 mono_mb_emit_exception (mb, "ArgumentNullException", NULL);
5960
5961 mono_mb_patch_branch (mb, pos2);
5962 mono_mb_emit_ldarg (mb, argnum);
5963 mono_mb_emit_byte (mb, CEE_LDIND_I);
5964 }
5965
5966 mono_mb_emit_stloc (mb, 0);
5967
5968 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
5969 mono_mb_emit_stloc (mb, conv_arg);
5970
5971 mono_mb_emit_ldloc (mb, 0);
5972 pos = mono_mb_emit_branch (mb, CEE_BRFALSE);
5973
5974 /* Create and set dst */
5975 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
5976 mono_mb_emit_op (mb, CEE_MONO_NEWOBJ, klass);
5977 mono_mb_emit_stloc (mb, conv_arg);
5978 mono_mb_emit_ldloc (mb, conv_arg);
5979 mono_mb_emit_ldflda (mb, sizeof (MonoObject));
5980 mono_mb_emit_stloc (mb, 1);
5981
5982 /* emit valuetype conversion code */
5983 emit_struct_conv (mb, klass, TRUE);
5984
5985 mono_mb_patch_branch (mb, pos);
5986 break;
5987
5988 case MARSHAL_ACTION_MANAGED_CONV_OUT:
5989 if (klass->delegate) {
5990 if (t->byref) {
5991 int stind_op;
5992 mono_mb_emit_ldarg (mb, argnum);
5993 mono_mb_emit_ldloc (mb, conv_arg);
5994 mono_mb_emit_icall (mb, conv_to_icall (MONO_MARSHAL_CONV_DEL_FTN, &stind_op));
5995 mono_mb_emit_byte (mb, stind_op);
5996 break;
5997 }
5998 }
5999
6000 if (t->byref) {
6001 /* Check for null */
6002 mono_mb_emit_ldloc (mb, conv_arg);
6003 pos = mono_mb_emit_branch (mb, CEE_BRTRUE);
6004 mono_mb_emit_ldarg (mb, argnum);
6005 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
6006 mono_mb_emit_byte (mb, CEE_STIND_REF);
6007 pos2 = mono_mb_emit_branch (mb, CEE_BR);
6008
6009 mono_mb_patch_branch (mb, pos);
6010
6011 /* Set src */
6012 mono_mb_emit_ldloc (mb, conv_arg);
6013 mono_mb_emit_ldflda (mb, sizeof (MonoObject));
6014 mono_mb_emit_stloc (mb, 0);
6015
6016 /* Allocate and set dest */
6017 mono_mb_emit_icon (mb, mono_class_native_size (klass, NULL));
6018 mono_mb_emit_byte (mb, CEE_CONV_I);
6019 mono_mb_emit_icall (mb, ves_icall_marshal_alloc);
6020 mono_mb_emit_stloc (mb, 1);
6021
6022 /* Update argument pointer */
6023 mono_mb_emit_ldarg (mb, argnum);
6024 mono_mb_emit_ldloc (mb, 1);
6025 mono_mb_emit_byte (mb, CEE_STIND_I);
6026
6027 /* emit valuetype conversion code */
6028 emit_struct_conv (mb, klass, FALSE);
6029
6030 mono_mb_patch_branch (mb, pos2);
6031 } else if (klass == mono_defaults.stringbuilder_class) {
6032 // FIXME: What to do here ?
6033 } else {
6034 /* byval [Out] marshalling */
6035
6036 /* FIXME: Handle null */
6037
6038 /* Set src */
6039 mono_mb_emit_ldloc (mb, conv_arg);
6040 mono_mb_emit_ldflda (mb, sizeof (MonoObject));
6041 mono_mb_emit_stloc (mb, 0);
6042
6043 /* Set dest */
6044 mono_mb_emit_ldarg (mb, argnum);
6045 mono_mb_emit_stloc (mb, 1);
6046
6047 /* emit valuetype conversion code */
6048 emit_struct_conv (mb, klass, FALSE);
6049 }
6050 break;
6051
6052 case MARSHAL_ACTION_MANAGED_CONV_RESULT:
6053 if (klass->delegate) {
6054 mono_mb_emit_icall (mb, conv_to_icall (MONO_MARSHAL_CONV_DEL_FTN, NULL));
6055 mono_mb_emit_stloc (mb, 3);
6056 break;
6057 }
6058
6059 /* The class can not have an automatic layout */
6060 if ((klass->flags & TYPE_ATTRIBUTE_LAYOUT_MASK) == TYPE_ATTRIBUTE_AUTO_LAYOUT) {
6061 mono_mb_emit_auto_layout_exception (mb, klass);
6062 break;
6063 }
6064
6065 mono_mb_emit_stloc (mb, 0);
6066 /* Check for null */
6067 mono_mb_emit_ldloc (mb, 0);
6068 pos = mono_mb_emit_branch (mb, CEE_BRTRUE);
6069 mono_mb_emit_byte (mb, CEE_LDNULL);
6070 mono_mb_emit_stloc (mb, 3);
6071 pos2 = mono_mb_emit_branch (mb, CEE_BR);
6072
6073 mono_mb_patch_branch (mb, pos);
6074
6075 /* Set src */
6076 mono_mb_emit_ldloc (mb, 0);
6077 mono_mb_emit_ldflda (mb, sizeof (MonoObject));
6078 mono_mb_emit_stloc (mb, 0);
6079
6080 /* Allocate and set dest */
6081 mono_mb_emit_icon (mb, mono_class_native_size (klass, NULL));
6082 mono_mb_emit_byte (mb, CEE_CONV_I);
6083 mono_mb_emit_icall (mb, ves_icall_marshal_alloc);
6084 mono_mb_emit_byte (mb, CEE_DUP);
6085 mono_mb_emit_stloc (mb, 1);
6086 mono_mb_emit_stloc (mb, 3);
6087
6088 emit_struct_conv (mb, klass, FALSE);
6089
6090 mono_mb_patch_branch (mb, pos2);
6091 break;
6092
6093 default:
6094 g_assert_not_reached ();
6095 }
6096 #endif
6097 return conv_arg;
6098 }
6099
6100 #ifndef DISABLE_JIT
6101
6102 #ifndef DISABLE_COM
6103
6104 static int
6105 emit_marshal_variant (EmitMarshalContext *m, int argnum, MonoType *t,
6106 MonoMarshalSpec *spec,
6107 int conv_arg, MonoType **conv_arg_type,
6108 MarshalAction action)
6109 {
6110 MonoMethodBuilder *mb = m->mb;
6111 static MonoMethod *get_object_for_native_variant = NULL;
6112 static MonoMethod *get_native_variant_for_object = NULL;
6113
6114 if (!get_object_for_native_variant)
6115 get_object_for_native_variant = mono_class_get_method_from_name (mono_defaults.marshal_class, "GetObjectForNativeVariant", 1);
6116 g_assert (get_object_for_native_variant);
6117
6118 if (!get_native_variant_for_object)
6119 get_native_variant_for_object = mono_class_get_method_from_name (mono_defaults.marshal_class, "GetNativeVariantForObject", 2);
6120 g_assert (get_native_variant_for_object);
6121
6122 switch (action) {
6123 case MARSHAL_ACTION_CONV_IN: {
6124 conv_arg = mono_mb_add_local (mb, &mono_class_get_variant_class ()->byval_arg);
6125
6126 if (t->byref)
6127 *conv_arg_type = &mono_class_get_variant_class ()->this_arg;
6128 else
6129 *conv_arg_type = &mono_class_get_variant_class ()->byval_arg;
6130
6131 if (t->byref && !(t->attrs & PARAM_ATTRIBUTE_IN) && t->attrs & PARAM_ATTRIBUTE_OUT)
6132 break;
6133
6134 mono_mb_emit_ldarg (mb, argnum);
6135 if (t->byref)
6136 mono_mb_emit_byte(mb, CEE_LDIND_REF);
6137 mono_mb_emit_ldloc_addr (mb, conv_arg);
6138 mono_mb_emit_managed_call (mb, get_native_variant_for_object, NULL);
6139 break;
6140 }
6141
6142 case MARSHAL_ACTION_CONV_OUT: {
6143 static MonoMethod *variant_clear = NULL;
6144
6145 if (!variant_clear)
6146 variant_clear = mono_class_get_method_from_name (mono_class_get_variant_class (), "Clear", 0);
6147 g_assert (variant_clear);
6148
6149
6150 if (t->byref && (t->attrs & PARAM_ATTRIBUTE_OUT || !(t->attrs & PARAM_ATTRIBUTE_IN))) {
6151 mono_mb_emit_ldarg (mb, argnum);
6152 mono_mb_emit_ldloc_addr (mb, conv_arg);
6153 mono_mb_emit_managed_call (mb, get_object_for_native_variant, NULL);
6154 mono_mb_emit_byte (mb, CEE_STIND_REF);
6155 }
6156
6157 mono_mb_emit_ldloc_addr (mb, conv_arg);
6158 mono_mb_emit_managed_call (mb, variant_clear, NULL);
6159 break;
6160 }
6161
6162 case MARSHAL_ACTION_PUSH:
6163 if (t->byref)
6164 mono_mb_emit_ldloc_addr (mb, conv_arg);
6165 else
6166 mono_mb_emit_ldloc (mb, conv_arg);
6167 break;
6168
6169 case MARSHAL_ACTION_CONV_RESULT: {
6170 char *msg = g_strdup ("Marshalling of VARIANT not supported as a return type.");
6171 mono_mb_emit_exception_marshal_directive (mb, msg);
6172 break;
6173 }
6174
6175 case MARSHAL_ACTION_MANAGED_CONV_IN: {
6176 conv_arg = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
6177
6178 if (t->byref)
6179 *conv_arg_type = &mono_class_get_variant_class ()->this_arg;
6180 else
6181 *conv_arg_type = &mono_class_get_variant_class ()->byval_arg;
6182
6183 if (t->byref && !(t->attrs & PARAM_ATTRIBUTE_IN) && t->attrs & PARAM_ATTRIBUTE_OUT)
6184 break;
6185
6186 if (t->byref)
6187 mono_mb_emit_ldarg (mb, argnum);
6188 else
6189 mono_mb_emit_ldarg_addr (mb, argnum);
6190 mono_mb_emit_managed_call (mb, get_object_for_native_variant, NULL);
6191 mono_mb_emit_stloc (mb, conv_arg);
6192 break;
6193 }
6194
6195 case MARSHAL_ACTION_MANAGED_CONV_OUT: {
6196 if (t->byref && (t->attrs & PARAM_ATTRIBUTE_OUT || !(t->attrs & PARAM_ATTRIBUTE_IN))) {
6197 mono_mb_emit_ldloc (mb, conv_arg);
6198 mono_mb_emit_ldarg (mb, argnum);
6199 mono_mb_emit_managed_call (mb, get_native_variant_for_object, NULL);
6200 }
6201 break;
6202 }
6203
6204 case MARSHAL_ACTION_MANAGED_CONV_RESULT: {
6205 char *msg = g_strdup ("Marshalling of VARIANT not supported as a return type.");
6206 mono_mb_emit_exception_marshal_directive (mb, msg);
6207 break;
6208 }
6209
6210 default:
6211 g_assert_not_reached ();
6212 }
6213
6214 return conv_arg;
6215 }
6216
6217 #endif /* DISABLE_COM */
6218 #endif /* DISABLE_JIT */
6219
6220 static gboolean
6221 mono_pinvoke_is_unicode (MonoMethodPInvoke *piinfo)
6222 {
6223 switch (piinfo->piflags & PINVOKE_ATTRIBUTE_CHAR_SET_MASK) {
6224 case PINVOKE_ATTRIBUTE_CHAR_SET_ANSI:
6225 return FALSE;
6226 case PINVOKE_ATTRIBUTE_CHAR_SET_UNICODE:
6227 return TRUE;
6228 case PINVOKE_ATTRIBUTE_CHAR_SET_AUTO:
6229 default:
6230 #ifdef TARGET_WIN32
6231 return TRUE;
6232 #else
6233 return FALSE;
6234 #endif
6235 }
6236 }
6237
6238
6239 static int
6240 emit_marshal_array (EmitMarshalContext *m, int argnum, MonoType *t,
6241 MonoMarshalSpec *spec,
6242 int conv_arg, MonoType **conv_arg_type,
6243 MarshalAction action)
6244 {
6245 #ifdef DISABLE_JIT
6246 switch (action) {
6247 case MARSHAL_ACTION_CONV_IN:
6248 *conv_arg_type = &mono_defaults.object_class->byval_arg;
6249 break;
6250 case MARSHAL_ACTION_MANAGED_CONV_IN:
6251 *conv_arg_type = &mono_defaults.int_class->byval_arg;
6252 break;
6253 }
6254 #else
6255 MonoMethodBuilder *mb = m->mb;
6256 MonoClass *klass = mono_class_from_mono_type (t);
6257 gboolean need_convert, need_free;
6258 MonoMarshalNative encoding;
6259
6260 encoding = mono_marshal_get_string_encoding (m->piinfo, spec);
6261
6262 switch (action) {
6263 case MARSHAL_ACTION_CONV_IN:
6264 *conv_arg_type = &mono_defaults.object_class->byval_arg;
6265 conv_arg = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
6266
6267 if (klass->element_class->blittable) {
6268 mono_mb_emit_ldarg (mb, argnum);
6269 if (t->byref)
6270 mono_mb_emit_byte (mb, CEE_LDIND_I);
6271 mono_mb_emit_icall (mb, conv_to_icall (MONO_MARSHAL_CONV_ARRAY_LPARRAY, NULL));
6272 mono_mb_emit_stloc (mb, conv_arg);
6273 } else {
6274 MonoClass *eklass;
6275 guint32 label1, label2, label3;
6276 int index_var, src_var, dest_ptr, esize;
6277 MonoMarshalConv conv;
6278 gboolean is_string = FALSE;
6279
6280 dest_ptr = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
6281
6282 eklass = klass->element_class;
6283
6284 if (eklass == mono_defaults.string_class) {
6285 is_string = TRUE;
6286 conv = mono_marshal_get_string_to_ptr_conv (m->piinfo, spec);
6287 }
6288 else if (eklass == mono_defaults.stringbuilder_class) {
6289 is_string = TRUE;
6290 conv = mono_marshal_get_stringbuilder_to_ptr_conv (m->piinfo, spec);
6291 }
6292 else
6293 conv = MONO_MARSHAL_CONV_INVALID;
6294
6295 if (is_string && conv == MONO_MARSHAL_CONV_INVALID) {
6296 char *msg = g_strdup_printf ("string/stringbuilder marshalling conversion %d not implemented", encoding);
6297 mono_mb_emit_exception_marshal_directive (mb, msg);
6298 break;
6299 }
6300
6301 src_var = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
6302 mono_mb_emit_ldarg (mb, argnum);
6303 if (t->byref)
6304 mono_mb_emit_byte (mb, CEE_LDIND_I);
6305 mono_mb_emit_stloc (mb, src_var);
6306
6307 /* Check null */
6308 mono_mb_emit_ldloc (mb, src_var);
6309 mono_mb_emit_stloc (mb, conv_arg);
6310 mono_mb_emit_ldloc (mb, src_var);
6311 label1 = mono_mb_emit_branch (mb, CEE_BRFALSE);
6312
6313 if (is_string)
6314 esize = sizeof (gpointer);
6315 else if (eklass == mono_defaults.char_class) /*can't call mono_marshal_type_size since it causes all sorts of asserts*/
6316 esize = mono_pinvoke_is_unicode (m->piinfo) ? 2 : 1;
6317 else
6318 esize = mono_class_native_size (eklass, NULL);
6319
6320 /* allocate space for the native struct and store the address */
6321 mono_mb_emit_icon (mb, esize);
6322 mono_mb_emit_ldloc (mb, src_var);
6323 mono_mb_emit_byte (mb, CEE_LDLEN);
6324
6325 if (eklass == mono_defaults.string_class) {
6326 /* Make the array bigger for the terminating null */
6327 mono_mb_emit_byte (mb, CEE_LDC_I4_1);
6328 mono_mb_emit_byte (mb, CEE_ADD);
6329 }
6330 mono_mb_emit_byte (mb, CEE_MUL);
6331 mono_mb_emit_byte (mb, CEE_PREFIX1);
6332 mono_mb_emit_byte (mb, CEE_LOCALLOC);
6333 mono_mb_emit_stloc (mb, conv_arg);
6334
6335 mono_mb_emit_ldloc (mb, conv_arg);
6336 mono_mb_emit_stloc (mb, dest_ptr);
6337
6338 /* Emit marshalling loop */
6339 index_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
6340 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
6341 mono_mb_emit_stloc (mb, index_var);
6342 label2 = mono_mb_get_label (mb);
6343 mono_mb_emit_ldloc (mb, index_var);
6344 mono_mb_emit_ldloc (mb, src_var);
6345 mono_mb_emit_byte (mb, CEE_LDLEN);
6346 label3 = mono_mb_emit_branch (mb, CEE_BGE);
6347
6348 /* Emit marshalling code */
6349
6350 if (is_string) {
6351 int stind_op;
6352 mono_mb_emit_ldloc (mb, dest_ptr);
6353 mono_mb_emit_ldloc (mb, src_var);
6354 mono_mb_emit_ldloc (mb, index_var);
6355 mono_mb_emit_byte (mb, CEE_LDELEM_REF);
6356 mono_mb_emit_icall (mb, conv_to_icall (conv, &stind_op));
6357 mono_mb_emit_byte (mb, stind_op);
6358 } else {
6359 /* set the src_ptr */
6360 mono_mb_emit_ldloc (mb, src_var);
6361 mono_mb_emit_ldloc (mb, index_var);
6362 mono_mb_emit_op (mb, CEE_LDELEMA, eklass);
6363 mono_mb_emit_stloc (mb, 0);
6364
6365 /* set dst_ptr */
6366 mono_mb_emit_ldloc (mb, dest_ptr);
6367 mono_mb_emit_stloc (mb, 1);
6368
6369 /* emit valuetype conversion code */
6370 emit_struct_conv_full (mb, eklass, FALSE, 0, eklass == mono_defaults.char_class ? encoding : (MonoMarshalNative)-1);
6371 }
6372
6373 mono_mb_emit_add_to_local (mb, index_var, 1);
6374 mono_mb_emit_add_to_local (mb, dest_ptr, esize);
6375
6376 mono_mb_emit_branch_label (mb, CEE_BR, label2);
6377
6378 mono_mb_patch_branch (mb, label3);
6379
6380 if (eklass == mono_defaults.string_class) {
6381 /* Null terminate */
6382 mono_mb_emit_ldloc (mb, dest_ptr);
6383 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
6384 mono_mb_emit_byte (mb, CEE_STIND_REF);
6385 }
6386
6387 mono_mb_patch_branch (mb, label1);
6388 }
6389
6390 break;
6391
6392 case MARSHAL_ACTION_CONV_OUT:
6393 /* Unicode character arrays are implicitly marshalled as [Out] under MS.NET */
6394 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);
6395 need_free = mono_marshal_need_free (&klass->element_class->byval_arg,
6396 m->piinfo, spec);
6397
6398 if ((t->attrs & PARAM_ATTRIBUTE_OUT) && spec && spec->native == MONO_NATIVE_LPARRAY && spec->data.array_data.param_num != -1) {
6399 int param_num = spec->data.array_data.param_num;
6400 MonoType *param_type;
6401
6402 param_type = m->sig->params [param_num];
6403
6404 if (param_type->byref && param_type->type != MONO_TYPE_I4) {
6405 char *msg = g_strdup ("Not implemented.");
6406 mono_mb_emit_exception_marshal_directive (mb, msg);
6407 break;
6408 }
6409
6410 if (t->byref ) {
6411 mono_mb_emit_ldarg (mb, argnum);
6412
6413 /* Create the managed array */
6414 mono_mb_emit_ldarg (mb, param_num);
6415 if (m->sig->params [param_num]->byref)
6416 // FIXME: Support other types
6417 mono_mb_emit_byte (mb, CEE_LDIND_I4);
6418 mono_mb_emit_byte (mb, CEE_CONV_OVF_I);
6419 mono_mb_emit_op (mb, CEE_NEWARR, klass->element_class);
6420 /* Store into argument */
6421 mono_mb_emit_byte (mb, CEE_STIND_REF);
6422 }
6423 }
6424
6425 if (need_convert || need_free) {
6426 /* FIXME: Optimize blittable case */
6427 MonoClass *eklass;
6428 guint32 label1, label2, label3;
6429 int index_var, src_ptr, loc, esize;
6430
6431 eklass = klass->element_class;
6432 if ((eklass == mono_defaults.stringbuilder_class) || (eklass == mono_defaults.string_class))
6433 esize = sizeof (gpointer);
6434 else if (eklass == mono_defaults.char_class)
6435 esize = mono_pinvoke_is_unicode (m->piinfo) ? 2 : 1;
6436 else
6437 esize = mono_class_native_size (eklass, NULL);
6438 src_ptr = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
6439 loc = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
6440
6441 /* Check null */
6442 mono_mb_emit_ldarg (mb, argnum);
6443 if (t->byref)
6444 mono_mb_emit_byte (mb, CEE_LDIND_I);
6445 label1 = mono_mb_emit_branch (mb, CEE_BRFALSE);
6446
6447 mono_mb_emit_ldloc (mb, conv_arg);
6448 mono_mb_emit_stloc (mb, src_ptr);
6449
6450 /* Emit marshalling loop */
6451 index_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
6452 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
6453 mono_mb_emit_stloc (mb, index_var);
6454 label2 = mono_mb_get_label (mb);
6455 mono_mb_emit_ldloc (mb, index_var);
6456 mono_mb_emit_ldarg (mb, argnum);
6457 if (t->byref)
6458 mono_mb_emit_byte (mb, CEE_LDIND_REF);
6459 mono_mb_emit_byte (mb, CEE_LDLEN);
6460 label3 = mono_mb_emit_branch (mb, CEE_BGE);
6461
6462 /* Emit marshalling code */
6463
6464 if (eklass == mono_defaults.stringbuilder_class) {
6465 gboolean need_free2;
6466 MonoMarshalConv conv = mono_marshal_get_ptr_to_stringbuilder_conv (m->piinfo, spec, &need_free2);
6467
6468 g_assert (conv != MONO_MARSHAL_CONV_INVALID);
6469
6470 /* dest */
6471 mono_mb_emit_ldarg (mb, argnum);
6472 if (t->byref)
6473 mono_mb_emit_byte (mb, CEE_LDIND_I);
6474 mono_mb_emit_ldloc (mb, index_var);
6475 mono_mb_emit_byte (mb, CEE_LDELEM_REF);
6476
6477 /* src */
6478 mono_mb_emit_ldloc (mb, src_ptr);
6479 mono_mb_emit_byte (mb, CEE_LDIND_I);
6480
6481 mono_mb_emit_icall (mb, conv_to_icall (conv, NULL));
6482
6483 if (need_free) {
6484 /* src */
6485 mono_mb_emit_ldloc (mb, src_ptr);
6486 mono_mb_emit_byte (mb, CEE_LDIND_I);
6487
6488 mono_mb_emit_icall (mb, mono_marshal_free);
6489 }
6490 }
6491 else if (eklass == mono_defaults.string_class) {
6492 if (need_free) {
6493 /* src */
6494 mono_mb_emit_ldloc (mb, src_ptr);
6495 mono_mb_emit_byte (mb, CEE_LDIND_I);
6496
6497 mono_mb_emit_icall (mb, mono_marshal_free);
6498 }
6499 }
6500 else {
6501 if (need_convert) {
6502 /* set the src_ptr */
6503 mono_mb_emit_ldloc (mb, src_ptr);
6504 mono_mb_emit_stloc (mb, 0);
6505
6506 /* set dst_ptr */
6507 mono_mb_emit_ldarg (mb, argnum);
6508 if (t->byref)
6509 mono_mb_emit_byte (mb, CEE_LDIND_REF);
6510 mono_mb_emit_ldloc (mb, index_var);
6511 mono_mb_emit_op (mb, CEE_LDELEMA, eklass);
6512 mono_mb_emit_stloc (mb, 1);
6513
6514 /* emit valuetype conversion code */
6515 emit_struct_conv_full (mb, eklass, TRUE, 0, eklass == mono_defaults.char_class ? encoding : (MonoMarshalNative)-1);
6516 }
6517
6518 if (need_free) {
6519 mono_mb_emit_ldloc (mb, src_ptr);
6520 mono_mb_emit_stloc (mb, loc);
6521 mono_mb_emit_ldloc (mb, loc);
6522
6523 emit_struct_free (mb, eklass, loc);
6524 }
6525 }
6526
6527 mono_mb_emit_add_to_local (mb, index_var, 1);
6528 mono_mb_emit_add_to_local (mb, src_ptr, esize);
6529
6530 mono_mb_emit_branch_label (mb, CEE_BR, label2);
6531
6532 mono_mb_patch_branch (mb, label1);
6533 mono_mb_patch_branch (mb, label3);
6534 }
6535
6536 if (klass->element_class->blittable) {
6537 /* free memory allocated (if any) by MONO_MARSHAL_CONV_ARRAY_LPARRAY */
6538
6539 mono_mb_emit_ldarg (mb, argnum);
6540 if (t->byref)
6541 mono_mb_emit_byte (mb, CEE_LDIND_REF);
6542 mono_mb_emit_ldloc (mb, conv_arg);
6543 mono_mb_emit_icall (mb, conv_to_icall (MONO_MARSHAL_FREE_LPARRAY, NULL));
6544 }
6545
6546 break;
6547
6548 case MARSHAL_ACTION_PUSH:
6549 if (t->byref)
6550 mono_mb_emit_ldloc_addr (mb, conv_arg);
6551 else
6552 mono_mb_emit_ldloc (mb, conv_arg);
6553 break;
6554
6555 case MARSHAL_ACTION_CONV_RESULT:
6556 /* fixme: we need conversions here */
6557 mono_mb_emit_stloc (mb, 3);
6558 break;
6559
6560 case MARSHAL_ACTION_MANAGED_CONV_IN: {
6561 MonoClass *eklass;
6562 guint32 label1, label2, label3;
6563 int index_var, src_ptr, esize, param_num, num_elem;
6564 MonoMarshalConv conv;
6565 gboolean is_string = FALSE;
6566
6567 conv_arg = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
6568 *conv_arg_type = &mono_defaults.int_class->byval_arg;
6569
6570 if (t->byref) {
6571 char *msg = g_strdup ("Byref array marshalling to managed code is not implemented.");
6572 mono_mb_emit_exception_marshal_directive (mb, msg);
6573 return conv_arg;
6574 }
6575 if (!spec) {
6576 char *msg = g_strdup ("[MarshalAs] attribute required to marshal arrays to managed code.");
6577 mono_mb_emit_exception_marshal_directive (mb, msg);
6578 return conv_arg;
6579 }
6580 if (spec->native != MONO_NATIVE_LPARRAY) {
6581 char *msg = g_strdup ("Non LPArray marshalling of arrays to managed code is not implemented.");
6582 mono_mb_emit_exception_marshal_directive (mb, msg);
6583 return conv_arg;
6584 }
6585
6586 /* FIXME: t is from the method which is wrapped, not the delegate type */
6587 /* g_assert (t->attrs & PARAM_ATTRIBUTE_IN); */
6588
6589 param_num = spec->data.array_data.param_num;
6590 num_elem = spec->data.array_data.num_elem;
6591 if (spec->data.array_data.elem_mult == 0)
6592 /* param_num is not specified */
6593 param_num = -1;
6594
6595 if (param_num == -1) {
6596 if (num_elem <= 0) {
6597 char *msg = g_strdup ("Either SizeConst or SizeParamIndex should be specified when marshalling arrays to managed code.");
6598 mono_mb_emit_exception_marshal_directive (mb, msg);
6599 return conv_arg;
6600 }
6601 }
6602
6603 /* FIXME: Optimize blittable case */
6604
6605 eklass = klass->element_class;
6606 if (eklass == mono_defaults.string_class) {
6607 is_string = TRUE;
6608 conv = mono_marshal_get_ptr_to_string_conv (m->piinfo, spec, &need_free);
6609 }
6610 else if (eklass == mono_defaults.stringbuilder_class) {
6611 is_string = TRUE;
6612 conv = mono_marshal_get_ptr_to_stringbuilder_conv (m->piinfo, spec, &need_free);
6613 }
6614 else
6615 conv = MONO_MARSHAL_CONV_INVALID;
6616
6617 mono_marshal_load_type_info (eklass);
6618
6619 if (is_string)
6620 esize = sizeof (gpointer);
6621 else
6622 esize = mono_class_native_size (eklass, NULL);
6623 src_ptr = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
6624
6625 mono_mb_emit_byte (mb, CEE_LDNULL);
6626 mono_mb_emit_stloc (mb, conv_arg);
6627
6628 /* Check param index */
6629 if (param_num != -1) {
6630 if (param_num >= m->sig->param_count) {
6631 char *msg = g_strdup ("Array size control parameter index is out of range.");
6632 mono_mb_emit_exception_marshal_directive (mb, msg);
6633 return conv_arg;
6634 }
6635 switch (m->sig->params [param_num]->type) {
6636 case MONO_TYPE_I1:
6637 case MONO_TYPE_U1:
6638 case MONO_TYPE_I2:
6639 case MONO_TYPE_U2:
6640 case MONO_TYPE_I4:
6641 case MONO_TYPE_U4:
6642 case MONO_TYPE_I:
6643 case MONO_TYPE_U:
6644 case MONO_TYPE_I8:
6645 case MONO_TYPE_U8:
6646 break;
6647 default: {
6648 char *msg = g_strdup ("Array size control parameter must be an integral type.");
6649 mono_mb_emit_exception_marshal_directive (mb, msg);
6650 return conv_arg;
6651 }
6652 }
6653 }
6654
6655 /* Check null */
6656 mono_mb_emit_ldarg (mb, argnum);
6657 label1 = mono_mb_emit_branch (mb, CEE_BRFALSE);
6658
6659 mono_mb_emit_ldarg (mb, argnum);
6660 mono_mb_emit_stloc (mb, src_ptr);
6661
6662 /* Create managed array */
6663 /*
6664 * The LPArray marshalling spec says that sometimes param_num starts
6665 * from 1, sometimes it starts from 0. But MS seems to allways start
6666 * from 0.
6667 */
6668
6669 if (param_num == -1) {
6670 mono_mb_emit_icon (mb, num_elem);
6671 } else {
6672 mono_mb_emit_ldarg (mb, param_num);
6673 if (num_elem > 0) {
6674 mono_mb_emit_icon (mb, num_elem);
6675 mono_mb_emit_byte (mb, CEE_ADD);
6676 }
6677 mono_mb_emit_byte (mb, CEE_CONV_OVF_I);
6678 }
6679
6680 mono_mb_emit_op (mb, CEE_NEWARR, eklass);
6681 mono_mb_emit_stloc (mb, conv_arg);
6682
6683 if (eklass->blittable) {
6684 mono_mb_emit_ldloc (mb, conv_arg);
6685 mono_mb_emit_byte (mb, CEE_CONV_I);
6686 mono_mb_emit_icon (mb, MONO_STRUCT_OFFSET (MonoArray, vector));
6687 mono_mb_emit_byte (mb, CEE_ADD);
6688 mono_mb_emit_ldarg (mb, argnum);
6689 mono_mb_emit_ldloc (mb, conv_arg);
6690 mono_mb_emit_byte (mb, CEE_LDLEN);
6691 mono_mb_emit_icon (mb, esize);
6692 mono_mb_emit_byte (mb, CEE_MUL);
6693 mono_mb_emit_byte (mb, CEE_PREFIX1);
6694 mono_mb_emit_byte (mb, CEE_CPBLK);
6695 break;
6696 }
6697
6698 /* Emit marshalling loop */
6699 index_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
6700 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
6701 mono_mb_emit_stloc (mb, index_var);
6702 label2 = mono_mb_get_label (mb);
6703 mono_mb_emit_ldloc (mb, index_var);
6704 mono_mb_emit_ldloc (mb, conv_arg);
6705 mono_mb_emit_byte (mb, CEE_LDLEN);
6706 label3 = mono_mb_emit_branch (mb, CEE_BGE);
6707
6708 /* Emit marshalling code */
6709 if (is_string) {
6710 g_assert (conv != MONO_MARSHAL_CONV_INVALID);
6711
6712 mono_mb_emit_ldloc (mb, conv_arg);
6713 mono_mb_emit_ldloc (mb, index_var);
6714
6715 mono_mb_emit_ldloc (mb, src_ptr);
6716 mono_mb_emit_byte (mb, CEE_LDIND_I);
6717
6718 mono_mb_emit_icall (mb, conv_to_icall (conv, NULL));
6719 mono_mb_emit_byte (mb, CEE_STELEM_REF);
6720 }
6721 else {
6722 char *msg = g_strdup ("Marshalling of non-string and non-blittable arrays to managed code is not implemented.");
6723 mono_mb_emit_exception_marshal_directive (mb, msg);
6724 return conv_arg;
6725 }
6726
6727 mono_mb_emit_add_to_local (mb, index_var, 1);
6728 mono_mb_emit_add_to_local (mb, src_ptr, esize);
6729
6730 mono_mb_emit_branch_label (mb, CEE_BR, label2);
6731
6732 mono_mb_patch_branch (mb, label1);
6733 mono_mb_patch_branch (mb, label3);
6734
6735 break;
6736 }
6737 case MARSHAL_ACTION_MANAGED_CONV_OUT: {
6738 MonoClass *eklass;
6739 guint32 label1, label2, label3;
6740 int index_var, dest_ptr, esize, param_num, num_elem;
6741 MonoMarshalConv conv;
6742 gboolean is_string = FALSE;
6743
6744 if (!spec)
6745 /* Already handled in CONV_IN */
6746 break;
6747
6748 /* These are already checked in CONV_IN */
6749 g_assert (!t->byref);
6750 g_assert (spec->native == MONO_NATIVE_LPARRAY);
6751 g_assert (t->attrs & PARAM_ATTRIBUTE_OUT);
6752
6753 param_num = spec->data.array_data.param_num;
6754 num_elem = spec->data.array_data.num_elem;
6755
6756 if (spec->data.array_data.elem_mult == 0)
6757 /* param_num is not specified */
6758 param_num = -1;
6759
6760 if (param_num == -1) {
6761 if (num_elem <= 0) {
6762 g_assert_not_reached ();
6763 }
6764 }
6765
6766 /* FIXME: Optimize blittable case */
6767
6768 eklass = klass->element_class;
6769 if (eklass == mono_defaults.string_class) {
6770 is_string = TRUE;
6771 conv = mono_marshal_get_string_to_ptr_conv (m->piinfo, spec);
6772 }
6773 else if (eklass == mono_defaults.stringbuilder_class) {
6774 is_string = TRUE;
6775 conv = mono_marshal_get_stringbuilder_to_ptr_conv (m->piinfo, spec);
6776 }
6777 else
6778 conv = MONO_MARSHAL_CONV_INVALID;
6779
6780 mono_marshal_load_type_info (eklass);
6781
6782 if (is_string)
6783 esize = sizeof (gpointer);
6784 else
6785 esize = mono_class_native_size (eklass, NULL);
6786
6787 dest_ptr = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
6788
6789 /* Check null */
6790 mono_mb_emit_ldloc (mb, conv_arg);
6791 label1 = mono_mb_emit_branch (mb, CEE_BRFALSE);
6792
6793 mono_mb_emit_ldarg (mb, argnum);
6794 mono_mb_emit_stloc (mb, dest_ptr);
6795
6796 if (eklass->blittable) {
6797 /* dest */
6798 mono_mb_emit_ldarg (mb, argnum);
6799 /* src */
6800 mono_mb_emit_ldloc (mb, conv_arg);
6801 mono_mb_emit_byte (mb, CEE_CONV_I);
6802 mono_mb_emit_icon (mb, MONO_STRUCT_OFFSET (MonoArray, vector));
6803 mono_mb_emit_byte (mb, CEE_ADD);
6804 /* length */
6805 mono_mb_emit_ldloc (mb, conv_arg);
6806 mono_mb_emit_byte (mb, CEE_LDLEN);
6807 mono_mb_emit_icon (mb, esize);
6808 mono_mb_emit_byte (mb, CEE_MUL);
6809 mono_mb_emit_byte (mb, CEE_PREFIX1);
6810 mono_mb_emit_byte (mb, CEE_CPBLK);
6811 break;
6812 }
6813
6814 /* Emit marshalling loop */
6815 index_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
6816 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
6817 mono_mb_emit_stloc (mb, index_var);
6818 label2 = mono_mb_get_label (mb);
6819 mono_mb_emit_ldloc (mb, index_var);
6820 mono_mb_emit_ldloc (mb, conv_arg);
6821 mono_mb_emit_byte (mb, CEE_LDLEN);
6822 label3 = mono_mb_emit_branch (mb, CEE_BGE);
6823
6824 /* Emit marshalling code */
6825 if (is_string) {
6826 int stind_op;
6827 g_assert (conv != MONO_MARSHAL_CONV_INVALID);
6828
6829 /* dest */
6830 mono_mb_emit_ldloc (mb, dest_ptr);
6831
6832 /* src */
6833 mono_mb_emit_ldloc (mb, conv_arg);
6834 mono_mb_emit_ldloc (mb, index_var);
6835
6836 mono_mb_emit_byte (mb, CEE_LDELEM_REF);
6837
6838 mono_mb_emit_icall (mb, conv_to_icall (conv, &stind_op));
6839 mono_mb_emit_byte (mb, stind_op);
6840 }
6841 else {
6842 char *msg = g_strdup ("Marshalling of non-string and non-blittable arrays to managed code is not implemented.");
6843 mono_mb_emit_exception_marshal_directive (mb, msg);
6844 return conv_arg;
6845 }
6846
6847 mono_mb_emit_add_to_local (mb, index_var, 1);
6848 mono_mb_emit_add_to_local (mb, dest_ptr, esize);
6849
6850 mono_mb_emit_branch_label (mb, CEE_BR, label2);
6851
6852 mono_mb_patch_branch (mb, label1);
6853 mono_mb_patch_branch (mb, label3);
6854
6855 break;
6856 }
6857 case MARSHAL_ACTION_MANAGED_CONV_RESULT: {
6858 MonoClass *eklass;
6859 guint32 label1, label2, label3;
6860 int index_var, src, dest, esize;
6861 MonoMarshalConv conv = MONO_MARSHAL_CONV_INVALID;
6862 gboolean is_string = FALSE;
6863
6864 g_assert (!t->byref);
6865
6866 eklass = klass->element_class;
6867
6868 mono_marshal_load_type_info (eklass);
6869
6870 if (eklass == mono_defaults.string_class) {
6871 is_string = TRUE;
6872 conv = mono_marshal_get_string_to_ptr_conv (m->piinfo, spec);
6873 }
6874 else {
6875 g_assert_not_reached ();
6876 }
6877
6878 if (is_string)
6879 esize = sizeof (gpointer);
6880 else if (eklass == mono_defaults.char_class)
6881 esize = mono_pinvoke_is_unicode (m->piinfo) ? 2 : 1;
6882 else
6883 esize = mono_class_native_size (eklass, NULL);
6884
6885 src = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
6886 dest = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
6887
6888 mono_mb_emit_stloc (mb, src);
6889 mono_mb_emit_ldloc (mb, src);
6890 mono_mb_emit_stloc (mb, 3);
6891
6892 /* Check for null */
6893 mono_mb_emit_ldloc (mb, src);
6894 label1 = mono_mb_emit_branch (mb, CEE_BRFALSE);
6895
6896 /* Allocate native array */
6897 mono_mb_emit_icon (mb, esize);
6898 mono_mb_emit_ldloc (mb, src);
6899 mono_mb_emit_byte (mb, CEE_LDLEN);
6900
6901 if (eklass == mono_defaults.string_class) {
6902 /* Make the array bigger for the terminating null */
6903 mono_mb_emit_byte (mb, CEE_LDC_I4_1);
6904 mono_mb_emit_byte (mb, CEE_ADD);
6905 }
6906 mono_mb_emit_byte (mb, CEE_MUL);
6907 mono_mb_emit_icall (mb, ves_icall_marshal_alloc);
6908 mono_mb_emit_stloc (mb, dest);
6909 mono_mb_emit_ldloc (mb, dest);
6910 mono_mb_emit_stloc (mb, 3);
6911
6912 /* Emit marshalling loop */
6913 index_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
6914 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
6915 mono_mb_emit_stloc (mb, index_var);
6916 label2 = mono_mb_get_label (mb);
6917 mono_mb_emit_ldloc (mb, index_var);
6918 mono_mb_emit_ldloc (mb, src);
6919 mono_mb_emit_byte (mb, CEE_LDLEN);
6920 label3 = mono_mb_emit_branch (mb, CEE_BGE);
6921
6922 /* Emit marshalling code */
6923 if (is_string) {
6924 int stind_op;
6925 g_assert (conv != MONO_MARSHAL_CONV_INVALID);
6926
6927 /* dest */
6928 mono_mb_emit_ldloc (mb, dest);
6929
6930 /* src */
6931 mono_mb_emit_ldloc (mb, src);
6932 mono_mb_emit_ldloc (mb, index_var);
6933
6934 mono_mb_emit_byte (mb, CEE_LDELEM_REF);
6935
6936 mono_mb_emit_icall (mb, conv_to_icall (conv, &stind_op));
6937 mono_mb_emit_byte (mb, stind_op);
6938 }
6939 else {
6940 char *msg = g_strdup ("Marshalling of non-string arrays to managed code is not implemented.");
6941 mono_mb_emit_exception_marshal_directive (mb, msg);
6942 return conv_arg;
6943 }
6944
6945 mono_mb_emit_add_to_local (mb, index_var, 1);
6946 mono_mb_emit_add_to_local (mb, dest, esize);
6947
6948 mono_mb_emit_branch_label (mb, CEE_BR, label2);
6949
6950 mono_mb_patch_branch (mb, label3);
6951 mono_mb_patch_branch (mb, label1);
6952 break;
6953 }
6954 default:
6955 g_assert_not_reached ();
6956 }
6957 #endif
6958 return conv_arg;
6959 }
6960
6961 static MonoType*
6962 marshal_boolean_conv_in_get_local_type (MonoMarshalSpec *spec, guint8 *ldc_op /*out*/)
6963 {
6964 if (spec == NULL) {
6965 return &mono_defaults.int32_class->byval_arg;
6966 } else {
6967 switch (spec->native) {
6968 case MONO_NATIVE_I1:
6969 case MONO_NATIVE_U1:
6970 return &mono_defaults.byte_class->byval_arg;
6971 case MONO_NATIVE_VARIANTBOOL:
6972 if (ldc_op) *ldc_op = CEE_LDC_I4_M1;
6973 return &mono_defaults.int16_class->byval_arg;
6974 case MONO_NATIVE_BOOLEAN:
6975 return &mono_defaults.int32_class->byval_arg;
6976 default:
6977 g_warning ("marshalling bool as native type %x is currently not supported", spec->native);
6978 return &mono_defaults.int32_class->byval_arg;
6979 }
6980 }
6981 }
6982
6983 static MonoClass*
6984 marshal_boolean_managed_conv_in_get_conv_arg_class (MonoMarshalSpec *spec, guint8 *ldop/*out*/)
6985 {
6986 MonoClass* conv_arg_class = mono_defaults.int32_class;
6987 if (spec) {
6988 switch (spec->native) {
6989 case MONO_NATIVE_I1:
6990 case MONO_NATIVE_U1:
6991 conv_arg_class = mono_defaults.byte_class;
6992 if (ldop) *ldop = CEE_LDIND_I1;
6993 break;
6994 case MONO_NATIVE_VARIANTBOOL:
6995 conv_arg_class = mono_defaults.int16_class;
6996 if (ldop) *ldop = CEE_LDIND_I2;
6997 break;
6998 case MONO_NATIVE_BOOLEAN:
6999 break;
7000 default:
7001 g_warning ("marshalling bool as native type %x is currently not supported", spec->native);
7002 }
7003 }
7004 return conv_arg_class;
7005 }
7006
7007 static int
7008 emit_marshal_boolean (EmitMarshalContext *m, int argnum, MonoType *t,
7009 MonoMarshalSpec *spec,
7010 int conv_arg, MonoType **conv_arg_type,
7011 MarshalAction action)
7012 {
7013 #ifdef DISABLE_JIT
7014 switch (action) {
7015 case MARSHAL_ACTION_CONV_IN:
7016 if (t->byref)
7017 *conv_arg_type = &mono_defaults.int_class->byval_arg;
7018 else
7019 *conv_arg_type = marshal_boolean_conv_in_get_local_type (spec, NULL);
7020 break;
7021
7022 case MARSHAL_ACTION_MANAGED_CONV_IN: {
7023 MonoClass* conv_arg_class = marshal_boolean_managed_conv_in_get_conv_arg_class (spec, NULL);
7024 if (t->byref)
7025 *conv_arg_type = &conv_arg_class->this_arg;
7026 else
7027 *conv_arg_type = &conv_arg_class->byval_arg;
7028 break;
7029 }
7030
7031 }
7032 #else
7033 MonoMethodBuilder *mb = m->mb;
7034
7035 switch (action) {
7036 case MARSHAL_ACTION_CONV_IN: {
7037 MonoType *local_type;
7038 int label_false;
7039 guint8 ldc_op = CEE_LDC_I4_1;
7040
7041 local_type = marshal_boolean_conv_in_get_local_type (spec, &ldc_op);
7042 if (t->byref)
7043 *conv_arg_type = &mono_defaults.int_class->byval_arg;
7044 else
7045 *conv_arg_type = local_type;
7046 conv_arg = mono_mb_add_local (mb, local_type);
7047
7048 mono_mb_emit_ldarg (mb, argnum);
7049 if (t->byref)
7050 mono_mb_emit_byte (mb, CEE_LDIND_I1);
7051 label_false = mono_mb_emit_branch (mb, CEE_BRFALSE);
7052 mono_mb_emit_byte (mb, ldc_op);
7053 mono_mb_emit_stloc (mb, conv_arg);
7054 mono_mb_patch_branch (mb, label_false);
7055
7056 break;
7057 }
7058
7059 case MARSHAL_ACTION_CONV_OUT:
7060 {
7061 int label_false, label_end;
7062 if (!t->byref)
7063 break;
7064
7065 mono_mb_emit_ldarg (mb, argnum);
7066 mono_mb_emit_ldloc (mb, conv_arg);
7067
7068 label_false = mono_mb_emit_branch (mb, CEE_BRFALSE);
7069 mono_mb_emit_byte (mb, CEE_LDC_I4_1);
7070
7071 label_end = mono_mb_emit_branch (mb, CEE_BR);
7072 mono_mb_patch_branch (mb, label_false);
7073 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
7074 mono_mb_patch_branch (mb, label_end);
7075
7076 mono_mb_emit_byte (mb, CEE_STIND_I1);
7077 break;
7078 }
7079
7080 case MARSHAL_ACTION_PUSH:
7081 if (t->byref)
7082 mono_mb_emit_ldloc_addr (mb, conv_arg);
7083 else if (conv_arg)
7084 mono_mb_emit_ldloc (mb, conv_arg);
7085 else
7086 mono_mb_emit_ldarg (mb, argnum);
7087 break;
7088
7089 case MARSHAL_ACTION_CONV_RESULT:
7090 /* maybe we need to make sure that it fits within 8 bits */
7091 mono_mb_emit_stloc (mb, 3);
7092 break;
7093
7094 case MARSHAL_ACTION_MANAGED_CONV_IN: {
7095 MonoClass* conv_arg_class = mono_defaults.int32_class;
7096 guint8 ldop = CEE_LDIND_I4;
7097 int label_null, label_false;
7098
7099 conv_arg_class = marshal_boolean_managed_conv_in_get_conv_arg_class (spec, &ldop);
7100 conv_arg = mono_mb_add_local (mb, &mono_defaults.boolean_class->byval_arg);
7101
7102 if (t->byref)
7103 *conv_arg_type = &conv_arg_class->this_arg;
7104 else
7105 *conv_arg_type = &conv_arg_class->byval_arg;
7106
7107
7108 mono_mb_emit_ldarg (mb, argnum);
7109
7110 /* Check null */
7111 if (t->byref) {
7112 label_null = mono_mb_emit_branch (mb, CEE_BRFALSE);
7113 mono_mb_emit_ldarg (mb, argnum);
7114 mono_mb_emit_byte (mb, ldop);
7115 } else
7116 label_null = 0;
7117
7118 label_false = mono_mb_emit_branch (mb, CEE_BRFALSE);
7119 mono_mb_emit_byte (mb, CEE_LDC_I4_1);
7120 mono_mb_emit_stloc (mb, conv_arg);
7121 mono_mb_patch_branch (mb, label_false);
7122
7123 if (t->byref)
7124 mono_mb_patch_branch (mb, label_null);
7125 break;
7126 }
7127
7128 case MARSHAL_ACTION_MANAGED_CONV_OUT: {
7129 guint8 stop = CEE_STIND_I4;
7130 guint8 ldc_op = CEE_LDC_I4_1;
7131 int label_null,label_false, label_end;;
7132
7133 if (!t->byref)
7134 break;
7135 if (spec) {
7136 switch (spec->native) {
7137 case MONO_NATIVE_I1:
7138 case MONO_NATIVE_U1:
7139 stop = CEE_STIND_I1;
7140 break;
7141 case MONO_NATIVE_VARIANTBOOL:
7142 stop = CEE_STIND_I2;
7143 ldc_op = CEE_LDC_I4_M1;
7144 break;
7145 default:
7146 break;
7147 }
7148 }
7149
7150 /* Check null */
7151 mono_mb_emit_ldarg (mb, argnum);
7152 label_null = mono_mb_emit_branch (mb, CEE_BRFALSE);
7153
7154 mono_mb_emit_ldarg (mb, argnum);
7155 mono_mb_emit_ldloc (mb, conv_arg);
7156
7157 label_false = mono_mb_emit_branch (mb, CEE_BRFALSE);
7158 mono_mb_emit_byte (mb, ldc_op);
7159 label_end = mono_mb_emit_branch (mb, CEE_BR);
7160
7161 mono_mb_patch_branch (mb, label_false);
7162 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
7163 mono_mb_patch_branch (mb, label_end);
7164
7165 mono_mb_emit_byte (mb, stop);
7166 mono_mb_patch_branch (mb, label_null);
7167 break;
7168 }
7169
7170 default:
7171 g_assert_not_reached ();
7172 }
7173 #endif
7174 return conv_arg;
7175 }
7176
7177 static int
7178 emit_marshal_ptr (EmitMarshalContext *m, int argnum, MonoType *t,
7179 MonoMarshalSpec *spec, int conv_arg,
7180 MonoType **conv_arg_type, MarshalAction action)
7181 {
7182 #ifndef DISABLE_JIT
7183 MonoMethodBuilder *mb = m->mb;
7184
7185 switch (action) {
7186 case MARSHAL_ACTION_CONV_IN:
7187 /* MS seems to allow this in some cases, ie. bxc #158 */
7188 /*
7189 if (MONO_TYPE_ISSTRUCT (t->data.type) && !mono_class_from_mono_type (t->data.type)->blittable) {
7190 char *msg = g_strdup_printf ("Can not marshal 'parameter #%d': Pointers can not reference marshaled structures. Use byref instead.", argnum + 1);
7191 mono_mb_emit_exception_marshal_directive (m->mb, msg);
7192 }
7193 */
7194 break;
7195
7196 case MARSHAL_ACTION_PUSH:
7197 mono_mb_emit_ldarg (mb, argnum);
7198 break;
7199
7200 case MARSHAL_ACTION_CONV_RESULT:
7201 /* no conversions necessary */
7202 mono_mb_emit_stloc (mb, 3);
7203 break;
7204
7205 default:
7206 break;
7207 }
7208 #endif
7209 return conv_arg;
7210 }
7211
7212 static int
7213 emit_marshal_char (EmitMarshalContext *m, int argnum, MonoType *t,
7214 MonoMarshalSpec *spec, int conv_arg,
7215 MonoType **conv_arg_type, MarshalAction action)
7216 {
7217 #ifndef DISABLE_JIT
7218 MonoMethodBuilder *mb = m->mb;
7219
7220 switch (action) {
7221 case MARSHAL_ACTION_PUSH:
7222 /* fixme: dont know how to marshal that. We cant simply
7223 * convert it to a one byte UTF8 character, because an
7224 * unicode character may need more that one byte in UTF8 */
7225 mono_mb_emit_ldarg (mb, argnum);
7226 break;
7227
7228 case MARSHAL_ACTION_CONV_RESULT:
7229 /* fixme: we need conversions here */
7230 mono_mb_emit_stloc (mb, 3);
7231 break;
7232
7233 default:
7234 break;
7235 }
7236 #endif
7237 return conv_arg;
7238 }
7239
7240 static int
7241 emit_marshal_scalar (EmitMarshalContext *m, int argnum, MonoType *t,
7242 MonoMarshalSpec *spec, int conv_arg,
7243 MonoType **conv_arg_type, MarshalAction action)
7244 {
7245 #ifndef DISABLE_JIT
7246 MonoMethodBuilder *mb = m->mb;
7247
7248 switch (action) {
7249 case MARSHAL_ACTION_PUSH:
7250 mono_mb_emit_ldarg (mb, argnum);
7251 break;
7252
7253 case MARSHAL_ACTION_CONV_RESULT:
7254 /* no conversions necessary */
7255 mono_mb_emit_stloc (mb, 3);
7256 break;
7257
7258 default:
7259 break;
7260 }
7261 #endif
7262 return conv_arg;
7263 }
7264
7265 static int
7266 emit_marshal (EmitMarshalContext *m, int argnum, MonoType *t,
7267 MonoMarshalSpec *spec, int conv_arg,
7268 MonoType **conv_arg_type, MarshalAction action)
7269 {
7270 /* Ensure that we have marshalling info for this param */
7271 mono_marshal_load_type_info (mono_class_from_mono_type (t));
7272
7273 if (spec && spec->native == MONO_NATIVE_CUSTOM)
7274 return emit_marshal_custom (m, argnum, t, spec, conv_arg, conv_arg_type, action);
7275
7276 if (spec && spec->native == MONO_NATIVE_ASANY)
7277 return emit_marshal_asany (m, argnum, t, spec, conv_arg, conv_arg_type, action);
7278
7279 switch (t->type) {
7280 case MONO_TYPE_VALUETYPE:
7281 if (t->data.klass == mono_defaults.handleref_class)
7282 return emit_marshal_handleref (m, argnum, t, spec, conv_arg, conv_arg_type, action);
7283
7284 return emit_marshal_vtype (m, argnum, t, spec, conv_arg, conv_arg_type, action);
7285 case MONO_TYPE_STRING:
7286 return emit_marshal_string (m, argnum, t, spec, conv_arg, conv_arg_type, action);
7287 case MONO_TYPE_CLASS:
7288 case MONO_TYPE_OBJECT:
7289 #if !defined(DISABLE_COM) && !defined(DISABLE_JIT)
7290 if (spec && spec->native == MONO_NATIVE_STRUCT)
7291 return emit_marshal_variant (m, argnum, t, spec, conv_arg, conv_arg_type, action);
7292 #endif
7293
7294 #if !defined(DISABLE_COM)
7295 if (spec && (spec->native == MONO_NATIVE_IUNKNOWN ||
7296 spec->native == MONO_NATIVE_IDISPATCH ||
7297 spec->native == MONO_NATIVE_INTERFACE))
7298 return mono_cominterop_emit_marshal_com_interface (m, argnum, t, spec, conv_arg, conv_arg_type, action);
7299 if (spec && (spec->native == MONO_NATIVE_SAFEARRAY) &&
7300 (spec->data.safearray_data.elem_type == MONO_VARIANT_VARIANT) &&
7301 ((action == MARSHAL_ACTION_CONV_OUT) || (action == MARSHAL_ACTION_CONV_IN) || (action == MARSHAL_ACTION_PUSH)))
7302 return mono_cominterop_emit_marshal_safearray (m, argnum, t, spec, conv_arg, conv_arg_type, action);
7303 #endif
7304
7305 if (mono_class_try_get_safehandle_class () != NULL && t->data.klass &&
7306 mono_class_is_subclass_of (t->data.klass, mono_class_try_get_safehandle_class (), FALSE))
7307 return emit_marshal_safehandle (m, argnum, t, spec, conv_arg, conv_arg_type, action);
7308
7309 return emit_marshal_object (m, argnum, t, spec, conv_arg, conv_arg_type, action);
7310 case MONO_TYPE_ARRAY:
7311 case MONO_TYPE_SZARRAY:
7312 return emit_marshal_array (m, argnum, t, spec, conv_arg, conv_arg_type, action);
7313 case MONO_TYPE_BOOLEAN:
7314 return emit_marshal_boolean (m, argnum, t, spec, conv_arg, conv_arg_type, action);
7315 case MONO_TYPE_PTR:
7316 return emit_marshal_ptr (m, argnum, t, spec, conv_arg, conv_arg_type, action);
7317 case MONO_TYPE_CHAR:
7318 return emit_marshal_char (m, argnum, t, spec, conv_arg, conv_arg_type, action);
7319 case MONO_TYPE_I1:
7320 case MONO_TYPE_U1:
7321 case MONO_TYPE_I2:
7322 case MONO_TYPE_U2:
7323 case MONO_TYPE_I4:
7324 case MONO_TYPE_U4:
7325 case MONO_TYPE_I:
7326 case MONO_TYPE_U:
7327 case MONO_TYPE_R4:
7328 case MONO_TYPE_R8:
7329 case MONO_TYPE_I8:
7330 case MONO_TYPE_U8:
7331 case MONO_TYPE_FNPTR:
7332 return emit_marshal_scalar (m, argnum, t, spec, conv_arg, conv_arg_type, action);
7333 case MONO_TYPE_GENERICINST:
7334 if (mono_type_generic_inst_is_valuetype (t))
7335 return emit_marshal_vtype (m, argnum, t, spec, conv_arg, conv_arg_type, action);
7336 else
7337 return emit_marshal_object (m, argnum, t, spec, conv_arg, conv_arg_type, action);
7338 default:
7339 return conv_arg;
7340 }
7341 }
7342
7343 #ifndef DISABLE_JIT
7344 /**
7345 * mono_marshal_emit_native_wrapper:
7346 * @image: the image to use for looking up custom marshallers
7347 * @sig: The signature of the native function
7348 * @piinfo: Marshalling information
7349 * @mspecs: Marshalling information
7350 * @aot: whenever the created method will be compiled by the AOT compiler
7351 * @method: if non-NULL, the pinvoke method to call
7352 * @check_exceptions: Whenever to check for pending exceptions after the native call
7353 * @func_param: the function to call is passed as a boxed IntPtr as the first parameter
7354 *
7355 * generates IL code for the pinvoke wrapper, the generated code calls @func.
7356 */
7357 void
7358 mono_marshal_emit_native_wrapper (MonoImage *image, MonoMethodBuilder *mb, MonoMethodSignature *sig, MonoMethodPInvoke *piinfo, MonoMarshalSpec **mspecs, gpointer func, gboolean aot, gboolean check_exceptions, gboolean func_param)
7359 {
7360 EmitMarshalContext m;
7361 MonoMethodSignature *csig;
7362 MonoClass *klass;
7363 int i, argnum, *tmp_locals;
7364 int type, param_shift = 0;
7365 int coop_gc_stack_dummy, coop_gc_var;
7366
7367 memset (&m, 0, sizeof (m));
7368 m.mb = mb;
7369 m.sig = sig;
7370 m.piinfo = piinfo;
7371
7372 /* we copy the signature, so that we can set pinvoke to 0 */
7373 if (func_param) {
7374 /* The function address is passed as the first argument */
7375 g_assert (!sig->hasthis);
7376 param_shift += 1;
7377 }
7378 csig = mono_metadata_signature_dup_full (mb->method->klass->image, sig);
7379 csig->pinvoke = 1;
7380 m.csig = csig;
7381 m.image = image;
7382
7383 if (sig->hasthis)
7384 param_shift += 1;
7385
7386 /* we allocate local for use with emit_struct_conv() */
7387 /* allocate local 0 (pointer) src_ptr */
7388 mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
7389 /* allocate local 1 (pointer) dst_ptr */
7390 mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
7391 /* allocate local 2 (boolean) delete_old */
7392 mono_mb_add_local (mb, &mono_defaults.boolean_class->byval_arg);
7393
7394 /* delete_old = FALSE */
7395 mono_mb_emit_icon (mb, 0);
7396 mono_mb_emit_stloc (mb, 2);
7397
7398 if (!MONO_TYPE_IS_VOID (sig->ret)) {
7399 /* allocate local 3 to store the return value */
7400 mono_mb_add_local (mb, sig->ret);
7401 }
7402
7403 if (mono_threads_is_coop_enabled ()) {
7404 /* local 4, dummy local used to get a stack address for suspend funcs */
7405 coop_gc_stack_dummy = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
7406 /* local 5, the local to be used when calling the suspend funcs */
7407 coop_gc_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
7408 }
7409
7410 /*
7411 * cookie = mono_threads_enter_gc_safe_region_unbalanced (ref dummy);
7412 *
7413 * ret = method (...);
7414 *
7415 * mono_threads_exit_gc_safe_region_unbalanced (cookie, ref dummy);
7416 *
7417 * <interrupt check>
7418 *
7419 * return ret;
7420 */
7421
7422 if (MONO_TYPE_ISSTRUCT (sig->ret))
7423 m.vtaddr_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
7424
7425 if (mspecs [0] && mspecs [0]->native == MONO_NATIVE_CUSTOM) {
7426 /* Return type custom marshaling */
7427 /*
7428 * Since we can't determine the return type of the unmanaged function,
7429 * we assume it returns a pointer, and pass that pointer to
7430 * MarshalNativeToManaged.
7431 */
7432 csig->ret = &mono_defaults.int_class->byval_arg;
7433 }
7434
7435 /* we first do all conversions */
7436 tmp_locals = (int *)alloca (sizeof (int) * sig->param_count);
7437 m.orig_conv_args = (int *)alloca (sizeof (int) * (sig->param_count + 1));
7438
7439 for (i = 0; i < sig->param_count; i ++) {
7440 tmp_locals [i] = emit_marshal (&m, i + param_shift, sig->params [i], mspecs [i + 1], 0, &csig->params [i], MARSHAL_ACTION_CONV_IN);
7441 }
7442
7443 // In coop mode need to register blocking state during native call
7444 if (mono_threads_is_coop_enabled ()) {
7445 // Perform an extra, early lookup of the function address, so any exceptions
7446 // potentially resulting from the lookup occur before entering blocking mode.
7447 if (!func_param && !MONO_CLASS_IS_IMPORT (mb->method->klass) && aot) {
7448 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
7449 mono_mb_emit_op (mb, CEE_MONO_ICALL_ADDR, &piinfo->method);
7450 mono_mb_emit_byte (mb, CEE_POP); // Result not needed yet
7451 }
7452
7453 mono_mb_emit_ldloc_addr (mb, coop_gc_stack_dummy);
7454 mono_mb_emit_icall (mb, mono_threads_enter_gc_safe_region_unbalanced);
7455 mono_mb_emit_stloc (mb, coop_gc_var);
7456 }
7457
7458 /* push all arguments */
7459
7460 if (sig->hasthis)
7461 mono_mb_emit_byte (mb, CEE_LDARG_0);
7462
7463 for (i = 0; i < sig->param_count; i++) {
7464 emit_marshal (&m, i + param_shift, sig->params [i], mspecs [i + 1], tmp_locals [i], NULL, MARSHAL_ACTION_PUSH);
7465 }
7466
7467 /* call the native method */
7468 if (func_param) {
7469 mono_mb_emit_byte (mb, CEE_LDARG_0);
7470 mono_mb_emit_op (mb, CEE_UNBOX, mono_defaults.int_class);
7471 mono_mb_emit_byte (mb, CEE_LDIND_I);
7472 mono_mb_emit_calli (mb, csig);
7473 } else if (MONO_CLASS_IS_IMPORT (mb->method->klass)) {
7474 #ifndef DISABLE_COM
7475 mono_mb_emit_cominterop_call (mb, csig, &piinfo->method);
7476 #else
7477 g_assert_not_reached ();
7478 #endif
7479 } else {
7480 if (aot) {
7481 /* Reuse the ICALL_ADDR opcode for pinvokes too */
7482 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
7483 mono_mb_emit_op (mb, CEE_MONO_ICALL_ADDR, &piinfo->method);
7484 mono_mb_emit_calli (mb, csig);
7485 } else {
7486 mono_mb_emit_native_call (mb, csig, func);
7487 }
7488 }
7489
7490 /* Set LastError if needed */
7491 if (piinfo->piflags & PINVOKE_ATTRIBUTE_SUPPORTS_LAST_ERROR) {
7492 #ifdef TARGET_WIN32
7493 if (!aot) {
7494 static MonoMethodSignature *get_last_error_sig = NULL;
7495 if (!get_last_error_sig) {
7496 get_last_error_sig = mono_metadata_signature_alloc (mono_defaults.corlib, 0);
7497 get_last_error_sig->ret = &mono_defaults.int_class->byval_arg;
7498 get_last_error_sig->pinvoke = 1;
7499 }
7500
7501 /*
7502 * Have to call GetLastError () early and without a wrapper, since various runtime components could
7503 * clobber its value.
7504 */
7505 mono_mb_emit_native_call (mb, get_last_error_sig, GetLastError);
7506 mono_mb_emit_icall (mb, mono_marshal_set_last_error_windows);
7507 } else {
7508 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
7509 mono_mb_emit_byte (mb, CEE_MONO_GET_LAST_ERROR);
7510 mono_mb_emit_icall (mb, mono_marshal_set_last_error_windows);
7511 }
7512 #else
7513 mono_mb_emit_icall (mb, mono_marshal_set_last_error);
7514 #endif
7515 }
7516
7517 if (MONO_TYPE_ISSTRUCT (sig->ret)) {
7518 MonoClass *klass = mono_class_from_mono_type (sig->ret);
7519 mono_class_init (klass);
7520 if (!(((klass->flags & TYPE_ATTRIBUTE_LAYOUT_MASK) == TYPE_ATTRIBUTE_EXPLICIT_LAYOUT) || klass->blittable)) {
7521 /* This is used by emit_marshal_vtype (), but it needs to go right before the call */
7522 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
7523 mono_mb_emit_byte (mb, CEE_MONO_VTADDR);
7524 mono_mb_emit_stloc (mb, m.vtaddr_var);
7525 }
7526 }
7527
7528 /* Unblock before converting the result, since that can involve calls into the runtime */
7529 if (mono_threads_is_coop_enabled ()) {
7530 mono_mb_emit_ldloc (mb, coop_gc_var);
7531 mono_mb_emit_ldloc_addr (mb, coop_gc_stack_dummy);
7532 mono_mb_emit_icall (mb, mono_threads_exit_gc_safe_region_unbalanced);
7533 }
7534
7535 /* convert the result */
7536 if (!sig->ret->byref) {
7537 MonoMarshalSpec *spec = mspecs [0];
7538 type = sig->ret->type;
7539
7540 if (spec && spec->native == MONO_NATIVE_CUSTOM) {
7541 emit_marshal (&m, 0, sig->ret, spec, 0, NULL, MARSHAL_ACTION_CONV_RESULT);
7542 } else {
7543 handle_enum:
7544 switch (type) {
7545 case MONO_TYPE_VOID:
7546 break;
7547 case MONO_TYPE_VALUETYPE:
7548 klass = sig->ret->data.klass;
7549 if (klass->enumtype) {
7550 type = mono_class_enum_basetype (sig->ret->data.klass)->type;
7551 goto handle_enum;
7552 }
7553 emit_marshal (&m, 0, sig->ret, spec, 0, NULL, MARSHAL_ACTION_CONV_RESULT);
7554 break;
7555 case MONO_TYPE_I1:
7556 case MONO_TYPE_U1:
7557 case MONO_TYPE_I2:
7558 case MONO_TYPE_U2:
7559 case MONO_TYPE_I4:
7560 case MONO_TYPE_U4:
7561 case MONO_TYPE_I:
7562 case MONO_TYPE_U:
7563 case MONO_TYPE_R4:
7564 case MONO_TYPE_R8:
7565 case MONO_TYPE_I8:
7566 case MONO_TYPE_U8:
7567 case MONO_TYPE_FNPTR:
7568 case MONO_TYPE_STRING:
7569 case MONO_TYPE_CLASS:
7570 case MONO_TYPE_OBJECT:
7571 case MONO_TYPE_BOOLEAN:
7572 case MONO_TYPE_ARRAY:
7573 case MONO_TYPE_SZARRAY:
7574 case MONO_TYPE_CHAR:
7575 case MONO_TYPE_PTR:
7576 case MONO_TYPE_GENERICINST:
7577 emit_marshal (&m, 0, sig->ret, spec, 0, NULL, MARSHAL_ACTION_CONV_RESULT);
7578 break;
7579 case MONO_TYPE_TYPEDBYREF:
7580 default:
7581 g_warning ("return type 0x%02x unknown", sig->ret->type);
7582 g_assert_not_reached ();
7583 }
7584 }
7585 } else {
7586 mono_mb_emit_stloc (mb, 3);
7587 }
7588
7589 /*
7590 * Need to call this after converting the result since MONO_VTADDR needs
7591 * to be adjacent to the call instruction.
7592 */
7593 if (check_exceptions)
7594 emit_thread_interrupt_checkpoint (mb);
7595
7596 /* we need to convert byref arguments back and free string arrays */
7597 for (i = 0; i < sig->param_count; i++) {
7598 MonoType *t = sig->params [i];
7599 MonoMarshalSpec *spec = mspecs [i + 1];
7600
7601 argnum = i + param_shift;
7602
7603 if (spec && ((spec->native == MONO_NATIVE_CUSTOM) || (spec->native == MONO_NATIVE_ASANY))) {
7604 emit_marshal (&m, argnum, t, spec, tmp_locals [i], NULL, MARSHAL_ACTION_CONV_OUT);
7605 continue;
7606 }
7607
7608 switch (t->type) {
7609 case MONO_TYPE_STRING:
7610 case MONO_TYPE_VALUETYPE:
7611 case MONO_TYPE_CLASS:
7612 case MONO_TYPE_OBJECT:
7613 case MONO_TYPE_SZARRAY:
7614 case MONO_TYPE_BOOLEAN:
7615 emit_marshal (&m, argnum, t, spec, tmp_locals [i], NULL, MARSHAL_ACTION_CONV_OUT);
7616 break;
7617 default:
7618 break;
7619 }
7620 }
7621
7622 if (!MONO_TYPE_IS_VOID(sig->ret))
7623 mono_mb_emit_ldloc (mb, 3);
7624
7625 mono_mb_emit_byte (mb, CEE_RET);
7626 }
7627 #endif /* DISABLE_JIT */
7628
7629 /**
7630 * mono_marshal_get_native_wrapper:
7631 * @method: The MonoMethod to wrap.
7632 * @check_exceptions: Whenever to check for pending exceptions
7633 *
7634 * generates IL code for the pinvoke wrapper (the generated method
7635 * calls the unmanaged code in piinfo->addr)
7636 */
7637 MonoMethod *
7638 mono_marshal_get_native_wrapper (MonoMethod *method, gboolean check_exceptions, gboolean aot)
7639 {
7640 MonoMethodSignature *sig, *csig;
7641 MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *) method;
7642 MonoMethodBuilder *mb;
7643 MonoMarshalSpec **mspecs;
7644 MonoMethod *res;
7645 GHashTable *cache;
7646 gboolean pinvoke = FALSE;
7647 gpointer iter;
7648 int i;
7649 const char *exc_class = "MissingMethodException";
7650 const char *exc_arg = NULL;
7651 WrapperInfo *info;
7652
7653 g_assert (method != NULL);
7654 g_assert (mono_method_signature (method)->pinvoke);
7655
7656 GHashTable **cache_ptr;
7657
7658 if (aot) {
7659 if (check_exceptions)
7660 cache_ptr = &mono_method_get_wrapper_cache (method)->native_wrapper_aot_check_cache;
7661 else
7662 cache_ptr = &mono_method_get_wrapper_cache (method)->native_wrapper_aot_cache;
7663 } else {
7664 if (check_exceptions)
7665 cache_ptr = &mono_method_get_wrapper_cache (method)->native_wrapper_check_cache;
7666 else
7667 cache_ptr = &mono_method_get_wrapper_cache (method)->native_wrapper_cache;
7668 }
7669
7670 cache = get_cache (cache_ptr, mono_aligned_addr_hash, NULL);
7671
7672 if ((res = mono_marshal_find_in_cache (cache, method)))
7673 return res;
7674
7675 if (MONO_CLASS_IS_IMPORT (method->klass)) {
7676 /* The COM code is not AOT compatible, it calls mono_custom_attrs_get_attr_checked () */
7677 if (aot)
7678 return method;
7679 #ifndef DISABLE_COM
7680 return mono_cominterop_get_native_wrapper (method);
7681 #else
7682 g_assert_not_reached ();
7683 #endif
7684 }
7685
7686 sig = mono_method_signature (method);
7687
7688 if (!(method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) &&
7689 (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL))
7690 pinvoke = TRUE;
7691
7692 if (!piinfo->addr) {
7693 if (pinvoke) {
7694 if (method->iflags & METHOD_IMPL_ATTRIBUTE_NATIVE)
7695 exc_arg = "Method contains unsupported native code";
7696 else if (!aot)
7697 mono_lookup_pinvoke_call (method, &exc_class, &exc_arg);
7698 } else {
7699 piinfo->addr = mono_lookup_internal_call (method);
7700 }
7701 }
7702
7703 /* hack - redirect certain string constructors to CreateString */
7704 if (piinfo->addr == ves_icall_System_String_ctor_RedirectToCreateString) {
7705 g_assert (!pinvoke);
7706 g_assert (method->string_ctor);
7707 g_assert (sig->hasthis);
7708
7709 /* CreateString returns a value */
7710 csig = mono_metadata_signature_dup_full (method->klass->image, sig);
7711 csig->ret = &mono_defaults.string_class->byval_arg;
7712 csig->pinvoke = 0;
7713
7714 iter = NULL;
7715 while ((res = mono_class_get_methods (mono_defaults.string_class, &iter))) {
7716 if (!strcmp ("CreateString", res->name) &&
7717 mono_metadata_signature_equal (csig, mono_method_signature (res))) {
7718 WrapperInfo *info;
7719
7720 g_assert (!(res->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL));
7721 g_assert (!(res->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL));
7722
7723 /* create a wrapper to preserve .ctor in stack trace */
7724 mb = mono_mb_new (method->klass, method->name, MONO_WRAPPER_MANAGED_TO_MANAGED);
7725
7726 #ifndef DISABLE_JIT
7727 mono_mb_emit_byte (mb, CEE_LDARG_0);
7728 for (i = 1; i <= csig->param_count; i++)
7729 mono_mb_emit_ldarg (mb, i);
7730 mono_mb_emit_managed_call (mb, res, NULL);
7731 mono_mb_emit_byte (mb, CEE_RET);
7732 #endif
7733
7734 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_STRING_CTOR);
7735 info->d.string_ctor.method = method;
7736
7737 /* use native_wrapper_cache because internal calls are looked up there */
7738 res = mono_mb_create_and_cache_full (cache, method, mb, csig,
7739 csig->param_count + 1, info, NULL);
7740 mono_mb_free (mb);
7741
7742 return res;
7743 }
7744 }
7745
7746 /* exception will be thrown */
7747 piinfo->addr = NULL;
7748 g_warning ("cannot find CreateString for .ctor");
7749 }
7750
7751 mb = mono_mb_new (method->klass, method->name, MONO_WRAPPER_MANAGED_TO_NATIVE);
7752
7753 mb->method->save_lmf = 1;
7754
7755 /*
7756 * In AOT mode and embedding scenarios, it is possible that the icall is not
7757 * registered in the runtime doing the AOT compilation.
7758 */
7759 if (!piinfo->addr && !aot) {
7760 #ifndef DISABLE_JIT
7761 mono_mb_emit_exception (mb, exc_class, exc_arg);
7762 #endif
7763 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_NONE);
7764 info->d.managed_to_native.method = method;
7765
7766 csig = mono_metadata_signature_dup_full (method->klass->image, sig);
7767 csig->pinvoke = 0;
7768 res = mono_mb_create_and_cache_full (cache, method, mb, csig,
7769 csig->param_count + 16, info, NULL);
7770 mono_mb_free (mb);
7771
7772 return res;
7773 }
7774
7775 /* internal calls: we simply push all arguments and call the method (no conversions) */
7776 if (method->iflags & (METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL | METHOD_IMPL_ATTRIBUTE_RUNTIME)) {
7777 if (sig->hasthis)
7778 csig = mono_metadata_signature_dup_add_this (method->klass->image, sig, method->klass);
7779 else
7780 csig = mono_metadata_signature_dup_full (method->klass->image, sig);
7781
7782 //printf ("%s\n", mono_method_full_name (method, 1));
7783
7784 /* hack - string constructors returns a value */
7785 if (method->string_ctor)
7786 csig->ret = &mono_defaults.string_class->byval_arg;
7787
7788 #ifndef DISABLE_JIT
7789 // FIXME:
7790 MonoClass *handle_stack_mark_class;
7791 MonoClass *error_class;
7792 int thread_info_var = -1, stack_mark_var = -1, error_var = -1;
7793 MonoMethodSignature *call_sig = csig;
7794 gboolean uses_handles = FALSE;
7795 (void) mono_lookup_internal_call_full (method, &uses_handles);
7796
7797
7798 /* If it uses handles and MonoError, it had better check exceptions */
7799 g_assert (!uses_handles || check_exceptions);
7800
7801 if (uses_handles) {
7802 MonoMethodSignature *ret;
7803
7804 /* Add a MonoError argument */
7805 // FIXME: The stuff from mono_metadata_signature_dup_internal_with_padding ()
7806 ret = mono_metadata_signature_alloc (method->klass->image, csig->param_count + 1);
7807
7808 ret->param_count = csig->param_count + 1;
7809 ret->ret = csig->ret;
7810 for (int i = 0; i < csig->param_count; ++i) {
7811 // FIXME: TODO implement handle wrapping for out and inout params.
7812 g_assert (!mono_signature_param_is_out (csig, i));
7813 ret->params [i] = csig->params [i];
7814 }
7815 ret->params [csig->param_count] = &mono_get_intptr_class ()->byval_arg;
7816 call_sig = ret;
7817 }
7818
7819 if (uses_handles) {
7820 handle_stack_mark_class = mono_class_load_from_name (mono_get_corlib (), "Mono", "RuntimeStructs/HandleStackMark");
7821 error_class = mono_class_load_from_name (mono_get_corlib (), "Mono", "RuntimeStructs/MonoError");
7822
7823 thread_info_var = mono_mb_add_local (mb, &mono_get_intptr_class ()->byval_arg);
7824 stack_mark_var = mono_mb_add_local (mb, &handle_stack_mark_class->byval_arg);
7825 error_var = mono_mb_add_local (mb, &error_class->byval_arg);
7826
7827 // FIXME: Change csig so it passes a handle not an objref
7828 }
7829
7830 if (sig->hasthis) {
7831 int pos;
7832
7833 /*
7834 * Add a null check since public icalls can be called with 'call' which
7835 * does no such check.
7836 */
7837 mono_mb_emit_byte (mb, CEE_LDARG_0);
7838 pos = mono_mb_emit_branch (mb, CEE_BRTRUE);
7839 mono_mb_emit_exception (mb, "NullReferenceException", NULL);
7840 mono_mb_patch_branch (mb, pos);
7841 }
7842
7843 if (uses_handles) {
7844 mono_mb_emit_ldloc_addr (mb, stack_mark_var);
7845 mono_mb_emit_ldloc_addr (mb, error_var);
7846 mono_mb_emit_icall (mb, mono_icall_start);
7847 mono_mb_emit_stloc (mb, thread_info_var);
7848
7849 if (sig->hasthis) {
7850 mono_mb_emit_byte (mb, CEE_LDARG_0);
7851 mono_mb_emit_icall (mb, mono_handle_new);
7852 }
7853 for (i = 0; i < sig->param_count; i++) {
7854 mono_mb_emit_ldarg (mb, i + sig->hasthis);
7855 if (MONO_TYPE_IS_REFERENCE (sig->params [i])) {
7856 mono_mb_emit_icall (mb, mono_handle_new);
7857 }
7858 }
7859 mono_mb_emit_ldloc_addr (mb, error_var);
7860 } else {
7861 if (sig->hasthis)
7862 mono_mb_emit_byte (mb, CEE_LDARG_0);
7863 for (i = 0; i < sig->param_count; i++)
7864 mono_mb_emit_ldarg (mb, i + sig->hasthis);
7865 }
7866
7867 if (aot) {
7868 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
7869 mono_mb_emit_op (mb, CEE_MONO_ICALL_ADDR, &piinfo->method);
7870 mono_mb_emit_calli (mb, call_sig);
7871 } else {
7872 g_assert (piinfo->addr);
7873 mono_mb_emit_native_call (mb, call_sig, piinfo->addr);
7874 }
7875
7876 if (uses_handles) {
7877 if (MONO_TYPE_IS_REFERENCE (sig->ret)) {
7878 // if (ret != NULL_HANDLE) {
7879 // ret = MONO_HANDLE_RAW(ret)
7880 // }
7881 mono_mb_emit_byte (mb, CEE_DUP);
7882 int pos = mono_mb_emit_branch (mb, CEE_BRFALSE);
7883 mono_mb_emit_ldflda (mb, MONO_HANDLE_PAYLOAD_OFFSET (MonoObject));
7884 mono_mb_emit_byte (mb, CEE_LDIND_REF);
7885 mono_mb_patch_branch (mb, pos);
7886 }
7887 mono_mb_emit_ldloc (mb, thread_info_var);
7888 mono_mb_emit_ldloc_addr (mb, stack_mark_var);
7889 mono_mb_emit_ldloc_addr (mb, error_var);
7890 mono_mb_emit_icall (mb, mono_icall_end);
7891 }
7892
7893 if (check_exceptions)
7894 emit_thread_interrupt_checkpoint (mb);
7895 mono_mb_emit_byte (mb, CEE_RET);
7896 #endif
7897 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_NONE);
7898 info->d.managed_to_native.method = method;
7899
7900 csig = mono_metadata_signature_dup_full (method->klass->image, csig);
7901 csig->pinvoke = 0;
7902 res = mono_mb_create_and_cache_full (cache, method, mb, csig, csig->param_count + 16,
7903 info, NULL);
7904
7905 mono_mb_free (mb);
7906 return res;
7907 }
7908
7909 g_assert (pinvoke);
7910 if (!aot)
7911 g_assert (piinfo->addr);
7912
7913 #ifndef DISABLE_JIT
7914 mspecs = g_new (MonoMarshalSpec*, sig->param_count + 1);
7915 mono_method_get_marshal_info (method, mspecs);
7916
7917 mono_marshal_emit_native_wrapper (mb->method->klass->image, mb, sig, piinfo, mspecs, piinfo->addr, aot, check_exceptions, FALSE);
7918 #endif
7919 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_PINVOKE);
7920 info->d.managed_to_native.method = method;
7921
7922 csig = mono_metadata_signature_dup_full (method->klass->image, sig);
7923 csig->pinvoke = 0;
7924 res = mono_mb_create_and_cache_full (cache, method, mb, csig, csig->param_count + 16,
7925 info, NULL);
7926 mono_mb_free (mb);
7927
7928 #ifndef DISABLE_JIT
7929 for (i = sig->param_count; i >= 0; i--)
7930 if (mspecs [i])
7931 mono_metadata_free_marshal_spec (mspecs [i]);
7932 g_free (mspecs);
7933 #endif
7934
7935 /* mono_method_print_code (res); */
7936
7937 return res;
7938 }
7939
7940 /**
7941 * mono_marshal_get_native_func_wrapper:
7942 * @image: The image to use for memory allocation and for looking up custom marshallers.
7943 * @sig: The signature of the function
7944 * @func: The native function to wrap
7945 *
7946 * Returns a wrapper method around native functions, similar to the pinvoke
7947 * wrapper.
7948 */
7949 MonoMethod *
7950 mono_marshal_get_native_func_wrapper (MonoImage *image, MonoMethodSignature *sig,
7951 MonoMethodPInvoke *piinfo, MonoMarshalSpec **mspecs, gpointer func)
7952 {
7953 MonoMethodSignature *csig;
7954
7955 SignaturePointerPair key, *new_key;
7956 MonoMethodBuilder *mb;
7957 MonoMethod *res;
7958 GHashTable *cache;
7959 gboolean found;
7960 char *name;
7961
7962 key.sig = sig;
7963 key.pointer = func;
7964
7965 // Generic types are not safe to place in MonoImage caches.
7966 g_assert (!sig->is_inflated);
7967
7968 cache = get_cache (&image->native_func_wrapper_cache, signature_pointer_pair_hash, signature_pointer_pair_equal);
7969 if ((res = mono_marshal_find_in_cache (cache, &key)))
7970 return res;
7971
7972 name = g_strdup_printf ("wrapper_native_%p", func);
7973 mb = mono_mb_new (mono_defaults.object_class, name, MONO_WRAPPER_MANAGED_TO_NATIVE);
7974 mb->method->save_lmf = 1;
7975
7976 #ifndef DISABLE_JIT
7977 mono_marshal_emit_native_wrapper (image, mb, sig, piinfo, mspecs, func, FALSE, TRUE, FALSE);
7978 #endif
7979
7980 csig = mono_metadata_signature_dup_full (image, sig);
7981 csig->pinvoke = 0;
7982
7983 new_key = g_new (SignaturePointerPair,1);
7984 new_key->sig = csig;
7985 new_key->pointer = func;
7986
7987 res = mono_mb_create_and_cache_full (cache, new_key, mb, csig, csig->param_count + 16, NULL, &found);
7988 if (found)
7989 g_free (new_key);
7990
7991 mono_mb_free (mb);
7992
7993 mono_marshal_set_wrapper_info (res, NULL);
7994
7995 return res;
7996 }
7997
7998 /*
7999 * The wrapper receives the native function as a boxed IntPtr as its 'this' argument. This is easier to support in
8000 * AOT.
8001 */
8002 MonoMethod*
8003 mono_marshal_get_native_func_wrapper_aot (MonoClass *klass)
8004 {
8005 MonoMethodSignature *sig, *csig;
8006 MonoMethodBuilder *mb;
8007 MonoMethod *res;
8008 GHashTable *cache;
8009 char *name;
8010 WrapperInfo *info;
8011 MonoMethodPInvoke mpiinfo;
8012 MonoMethodPInvoke *piinfo = &mpiinfo;
8013 MonoMarshalSpec **mspecs;
8014 MonoMethod *invoke = mono_get_delegate_invoke (klass);
8015 MonoImage *image = invoke->klass->image;
8016 int i;
8017
8018 // FIXME: include UnmanagedFunctionPointerAttribute info
8019
8020 /*
8021 * The wrapper is associated with the delegate type, to pick up the marshalling info etc.
8022 */
8023 cache = get_cache (&mono_method_get_wrapper_cache (invoke)->native_func_wrapper_aot_cache, mono_aligned_addr_hash, NULL);
8024
8025 if ((res = mono_marshal_find_in_cache (cache, invoke)))
8026 return res;
8027
8028 memset (&mpiinfo, 0, sizeof (mpiinfo));
8029 parse_unmanaged_function_pointer_attr (klass, &mpiinfo);
8030
8031 mspecs = g_new0 (MonoMarshalSpec*, mono_method_signature (invoke)->param_count + 1);
8032 mono_method_get_marshal_info (invoke, mspecs);
8033 /* Freed below so don't alloc from mempool */
8034 sig = mono_metadata_signature_dup (mono_method_signature (invoke));
8035 sig->hasthis = 0;
8036
8037 name = g_strdup_printf ("wrapper_aot_native");
8038 mb = mono_mb_new (invoke->klass, name, MONO_WRAPPER_MANAGED_TO_NATIVE);
8039 mb->method->save_lmf = 1;
8040
8041 #ifndef DISABLE_JIT
8042 mono_marshal_emit_native_wrapper (image, mb, sig, piinfo, mspecs, NULL, FALSE, TRUE, TRUE);
8043 #endif
8044
8045 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_NATIVE_FUNC_AOT);
8046 info->d.managed_to_native.method = invoke;
8047
8048 g_assert (!sig->hasthis);
8049 csig = mono_metadata_signature_dup_add_this (image, sig, mono_defaults.object_class);
8050 csig->pinvoke = 0;
8051 res = mono_mb_create_and_cache_full (cache, invoke,
8052 mb, csig, csig->param_count + 16,
8053 info, NULL);
8054 mono_mb_free (mb);
8055
8056 for (i = mono_method_signature (invoke)->param_count; i >= 0; i--)
8057 if (mspecs [i])
8058 mono_metadata_free_marshal_spec (mspecs [i]);
8059 g_free (mspecs);
8060 g_free (sig);
8061
8062 return res;
8063 }
8064
8065 /*
8066 * mono_marshal_emit_managed_wrapper:
8067 *
8068 * Emit the body of a native-to-managed wrapper. INVOKE_SIG is the signature of
8069 * the delegate which wraps the managed method to be called. For closed delegates,
8070 * it could have fewer parameters than the method it wraps.
8071 * THIS_LOC is the memory location where the target of the delegate is stored.
8072 */
8073 void
8074 mono_marshal_emit_managed_wrapper (MonoMethodBuilder *mb, MonoMethodSignature *invoke_sig, MonoMarshalSpec **mspecs, EmitMarshalContext* m, MonoMethod *method, uint32_t target_handle)
8075 {
8076 #ifdef DISABLE_JIT
8077 MonoMethodSignature *sig, *csig;
8078 int i;
8079
8080 sig = m->sig;
8081 csig = m->csig;
8082
8083 /* we first do all conversions */
8084 for (i = 0; i < sig->param_count; i ++) {
8085 MonoType *t = sig->params [i];
8086
8087 switch (t->type) {
8088 case MONO_TYPE_OBJECT:
8089 case MONO_TYPE_CLASS:
8090 case MONO_TYPE_VALUETYPE:
8091 case MONO_TYPE_ARRAY:
8092 case MONO_TYPE_SZARRAY:
8093 case MONO_TYPE_STRING:
8094 case MONO_TYPE_BOOLEAN:
8095 emit_marshal (m, i, sig->params [i], mspecs [i + 1], 0, &csig->params [i], MARSHAL_ACTION_MANAGED_CONV_IN);
8096 }
8097 }
8098
8099 if (!sig->ret->byref) {
8100 switch (sig->ret->type) {
8101 case MONO_TYPE_STRING:
8102 csig->ret = &mono_defaults.int_class->byval_arg;
8103 break;
8104 default:
8105 break;
8106 }
8107 }
8108 #else
8109 MonoMethodSignature *sig, *csig;
8110 MonoExceptionClause *clauses, *clause_finally, *clause_catch;
8111 int i, *tmp_locals, ex_local, e_local, attach_cookie_local, attach_dummy_local;
8112 int leave_try_pos, leave_catch_pos, ex_m1_pos;
8113 gboolean closed = FALSE;
8114
8115 sig = m->sig;
8116 csig = m->csig;
8117
8118 /* allocate local 0 (pointer) src_ptr */
8119 mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
8120 /* allocate local 1 (pointer) dst_ptr */
8121 mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
8122 /* allocate local 2 (boolean) delete_old */
8123 mono_mb_add_local (mb, &mono_defaults.boolean_class->byval_arg);
8124
8125 if (!sig->hasthis && sig->param_count != invoke_sig->param_count) {
8126 /* Closed delegate */
8127 g_assert (sig->param_count == invoke_sig->param_count + 1);
8128 closed = TRUE;
8129 /* Use a new signature without the first argument */
8130 sig = mono_metadata_signature_dup (sig);
8131 memmove (&sig->params [0], &sig->params [1], (sig->param_count - 1) * sizeof (MonoType*));
8132 sig->param_count --;
8133 }
8134
8135 if (!MONO_TYPE_IS_VOID(sig->ret)) {
8136 /* allocate local 3 to store the return value */
8137 mono_mb_add_local (mb, sig->ret);
8138 }
8139
8140 if (MONO_TYPE_ISSTRUCT (sig->ret))
8141 m->vtaddr_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
8142
8143 ex_local = mono_mb_add_local (mb, &mono_defaults.uint32_class->byval_arg);
8144 e_local = mono_mb_add_local (mb, &mono_defaults.exception_class->byval_arg);
8145
8146 attach_cookie_local = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
8147 attach_dummy_local = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
8148
8149 /*
8150 * guint32 ex = -1;
8151 * try {
8152 * // does (STARTING|RUNNING|BLOCKING) -> RUNNING + set/switch domain
8153 * mono_threads_attach_coop ();
8154 *
8155 * <interrupt check>
8156 *
8157 * ret = method (...);
8158 * } catch (Exception e) {
8159 * ex = mono_gchandle_new (e, false);
8160 * } finally {
8161 * // does RUNNING -> (RUNNING|BLOCKING) + unset/switch domain
8162 * mono_threads_detach_coop ();
8163 *
8164 * if (ex != -1)
8165 * mono_marshal_ftnptr_eh_callback (ex);
8166 * }
8167 *
8168 * return ret;
8169 */
8170
8171 clauses = g_new0 (MonoExceptionClause, 2);
8172
8173 clause_catch = &clauses [0];
8174 clause_catch->flags = MONO_EXCEPTION_CLAUSE_NONE;
8175 clause_catch->data.catch_class = mono_defaults.exception_class;
8176
8177 clause_finally = &clauses [1];
8178 clause_finally->flags = MONO_EXCEPTION_CLAUSE_FINALLY;
8179
8180 mono_mb_emit_icon (mb, 0);
8181 mono_mb_emit_stloc (mb, 2);
8182
8183 mono_mb_emit_icon (mb, -1);
8184 mono_mb_emit_byte (mb, CEE_CONV_U4);
8185 mono_mb_emit_stloc (mb, ex_local);
8186
8187 /* try { */
8188 clause_catch->try_offset = clause_finally->try_offset = mono_mb_get_label (mb);
8189
8190 if (!mono_threads_is_coop_enabled ()) {
8191 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
8192 mono_mb_emit_byte (mb, CEE_MONO_JIT_ATTACH);
8193 } else {
8194 /* mono_threads_attach_coop (); */
8195 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
8196 mono_mb_emit_byte (mb, CEE_MONO_LDDOMAIN);
8197 mono_mb_emit_ldloc_addr (mb, attach_dummy_local);
8198 mono_mb_emit_icall (mb, mono_threads_attach_coop);
8199 mono_mb_emit_stloc (mb, attach_cookie_local);
8200 }
8201
8202 /* <interrupt check> */
8203 emit_thread_interrupt_checkpoint (mb);
8204
8205 /* we first do all conversions */
8206 tmp_locals = (int *)alloca (sizeof (int) * sig->param_count);
8207 for (i = 0; i < sig->param_count; i ++) {
8208 MonoType *t = sig->params [i];
8209
8210 switch (t->type) {
8211 case MONO_TYPE_OBJECT:
8212 case MONO_TYPE_CLASS:
8213 case MONO_TYPE_VALUETYPE:
8214 case MONO_TYPE_ARRAY:
8215 case MONO_TYPE_SZARRAY:
8216 case MONO_TYPE_STRING:
8217 case MONO_TYPE_BOOLEAN:
8218 tmp_locals [i] = emit_marshal (m, i, sig->params [i], mspecs [i + 1], 0, &csig->params [i], MARSHAL_ACTION_MANAGED_CONV_IN);
8219
8220 break;
8221 default:
8222 tmp_locals [i] = 0;
8223 break;
8224 }
8225 }
8226
8227 if (sig->hasthis) {
8228 if (target_handle) {
8229 mono_mb_emit_icon (mb, (gint32)target_handle);
8230 mono_mb_emit_icall (mb, mono_gchandle_get_target);
8231 } else {
8232 /* fixme: */
8233 g_assert_not_reached ();
8234 }
8235 } else if (closed) {
8236 mono_mb_emit_icon (mb, (gint32)target_handle);
8237 mono_mb_emit_icall (mb, mono_gchandle_get_target);
8238 }
8239
8240 for (i = 0; i < sig->param_count; i++) {
8241 MonoType *t = sig->params [i];
8242
8243 if (tmp_locals [i]) {
8244 if (t->byref)
8245 mono_mb_emit_ldloc_addr (mb, tmp_locals [i]);
8246 else
8247 mono_mb_emit_ldloc (mb, tmp_locals [i]);
8248 }
8249 else
8250 mono_mb_emit_ldarg (mb, i);
8251 }
8252
8253 /* ret = method (...) */
8254 mono_mb_emit_managed_call (mb, method, NULL);
8255
8256 if (MONO_TYPE_ISSTRUCT (sig->ret)) {
8257 MonoClass *klass = mono_class_from_mono_type (sig->ret);
8258 mono_class_init (klass);
8259 if (!(((klass->flags & TYPE_ATTRIBUTE_LAYOUT_MASK) == TYPE_ATTRIBUTE_EXPLICIT_LAYOUT) || klass->blittable)) {
8260 /* This is used by emit_marshal_vtype (), but it needs to go right before the call */
8261 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
8262 mono_mb_emit_byte (mb, CEE_MONO_VTADDR);
8263 mono_mb_emit_stloc (mb, m->vtaddr_var);
8264 }
8265 }
8266
8267 if (mspecs [0] && mspecs [0]->native == MONO_NATIVE_CUSTOM) {
8268 emit_marshal (m, 0, sig->ret, mspecs [0], 0, NULL, MARSHAL_ACTION_MANAGED_CONV_RESULT);
8269 } else if (!sig->ret->byref) {
8270 switch (sig->ret->type) {
8271 case MONO_TYPE_VOID:
8272 break;
8273 case MONO_TYPE_BOOLEAN:
8274 case MONO_TYPE_I1:
8275 case MONO_TYPE_U1:
8276 case MONO_TYPE_CHAR:
8277 case MONO_TYPE_I2:
8278 case MONO_TYPE_U2:
8279 case MONO_TYPE_I4:
8280 case MONO_TYPE_U4:
8281 case MONO_TYPE_I:
8282 case MONO_TYPE_U:
8283 case MONO_TYPE_PTR:
8284 case MONO_TYPE_R4:
8285 case MONO_TYPE_R8:
8286 case MONO_TYPE_I8:
8287 case MONO_TYPE_U8:
8288 case MONO_TYPE_OBJECT:
8289 mono_mb_emit_stloc (mb, 3);
8290 break;
8291 case MONO_TYPE_STRING:
8292 csig->ret = &mono_defaults.int_class->byval_arg;
8293 emit_marshal (m, 0, sig->ret, mspecs [0], 0, NULL, MARSHAL_ACTION_MANAGED_CONV_RESULT);
8294 break;
8295 case MONO_TYPE_VALUETYPE:
8296 case MONO_TYPE_CLASS:
8297 case MONO_TYPE_SZARRAY:
8298 emit_marshal (m, 0, sig->ret, mspecs [0], 0, NULL, MARSHAL_ACTION_MANAGED_CONV_RESULT);
8299 break;
8300 default:
8301 g_warning ("return type 0x%02x unknown", sig->ret->type);
8302 g_assert_not_reached ();
8303 }
8304 } else {
8305 mono_mb_emit_stloc (mb, 3);
8306 }
8307
8308 /* Convert byref arguments back */
8309 for (i = 0; i < sig->param_count; i ++) {
8310 MonoType *t = sig->params [i];
8311 MonoMarshalSpec *spec = mspecs [i + 1];
8312
8313 if (spec && spec->native == MONO_NATIVE_CUSTOM) {
8314 emit_marshal (m, i, t, mspecs [i + 1], tmp_locals [i], NULL, MARSHAL_ACTION_MANAGED_CONV_OUT);
8315 }
8316 else if (t->byref) {
8317 switch (t->type) {
8318 case MONO_TYPE_CLASS:
8319 case MONO_TYPE_VALUETYPE:
8320 case MONO_TYPE_OBJECT:
8321 case MONO_TYPE_STRING:
8322 case MONO_TYPE_BOOLEAN:
8323 emit_marshal (m, i, t, mspecs [i + 1], tmp_locals [i], NULL, MARSHAL_ACTION_MANAGED_CONV_OUT);
8324 break;
8325 default:
8326 break;
8327 }
8328 }
8329 else if (invoke_sig->params [i]->attrs & PARAM_ATTRIBUTE_OUT) {
8330 /* The [Out] information is encoded in the delegate signature */
8331 switch (t->type) {
8332 case MONO_TYPE_SZARRAY:
8333 case MONO_TYPE_CLASS:
8334 case MONO_TYPE_VALUETYPE:
8335 emit_marshal (m, i, invoke_sig->params [i], mspecs [i + 1], tmp_locals [i], NULL, MARSHAL_ACTION_MANAGED_CONV_OUT);
8336 break;
8337 default:
8338 g_assert_not_reached ();
8339 }
8340 }
8341 }
8342
8343 leave_try_pos = mono_mb_emit_branch (mb, CEE_LEAVE);
8344
8345 /* } [endtry] */
8346
8347 /* catch (Exception e) { */
8348 clause_catch->try_len = mono_mb_get_label (mb) - clause_catch->try_offset;
8349 clause_catch->handler_offset = mono_mb_get_label (mb);
8350
8351 mono_mb_emit_stloc (mb, e_local);
8352
8353 /* ex = mono_gchandle_new (e, false); */
8354 mono_mb_emit_ldloc (mb, e_local);
8355 mono_mb_emit_icon (mb, 0);
8356 mono_mb_emit_icall (mb, mono_gchandle_new);
8357 mono_mb_emit_stloc (mb, ex_local);
8358
8359 leave_catch_pos = mono_mb_emit_branch (mb, CEE_LEAVE);
8360
8361 /* } [endcatch] */
8362 clause_catch->handler_len = mono_mb_get_pos (mb) - clause_catch->handler_offset;
8363
8364 /* finally { */
8365 clause_finally->try_len = mono_mb_get_label (mb) - clause_finally->try_offset;
8366 clause_finally->handler_offset = mono_mb_get_label (mb);
8367
8368 if (!mono_threads_is_coop_enabled ()) {
8369 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
8370 mono_mb_emit_byte (mb, CEE_MONO_JIT_DETACH);
8371 } else {
8372 /* mono_threads_detach_coop (); */
8373 mono_mb_emit_ldloc (mb, attach_cookie_local);
8374 mono_mb_emit_ldloc_addr (mb, attach_dummy_local);
8375 mono_mb_emit_icall (mb, mono_threads_detach_coop);
8376 }
8377
8378 /* if (ex != -1) */
8379 mono_mb_emit_ldloc (mb, ex_local);
8380 mono_mb_emit_icon (mb, -1);
8381 mono_mb_emit_byte (mb, CEE_CONV_U4);
8382 ex_m1_pos = mono_mb_emit_branch (mb, CEE_BEQ);
8383
8384 /* mono_marshal_ftnptr_eh_callback (ex) */
8385 mono_mb_emit_ldloc (mb, ex_local);
8386 mono_mb_emit_icall (mb, mono_marshal_ftnptr_eh_callback);
8387
8388 /* [ex == -1] */
8389 mono_mb_patch_branch (mb, ex_m1_pos);
8390
8391 mono_mb_emit_byte (mb, CEE_ENDFINALLY);
8392
8393 /* } [endfinally] */
8394 clause_finally->handler_len = mono_mb_get_pos (mb) - clause_finally->handler_offset;
8395
8396 mono_mb_patch_branch (mb, leave_try_pos);
8397 mono_mb_patch_branch (mb, leave_catch_pos);
8398
8399 /* return ret; */
8400 if (m->retobj_var) {
8401 mono_mb_emit_ldloc (mb, m->retobj_var);
8402 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
8403 mono_mb_emit_op (mb, CEE_MONO_RETOBJ, m->retobj_class);
8404 }
8405 else {
8406 if (!MONO_TYPE_IS_VOID(sig->ret))
8407 mono_mb_emit_ldloc (mb, 3);
8408 mono_mb_emit_byte (mb, CEE_RET);
8409 }
8410
8411 mono_mb_set_clauses (mb, 2, clauses);
8412
8413 if (closed)
8414 g_free (sig);
8415 #endif
8416 }
8417
8418 static void
8419 mono_marshal_set_callconv_from_modopt (MonoMethod *method, MonoMethodSignature *csig)
8420 {
8421 MonoMethodSignature *sig;
8422 int i;
8423
8424 #ifdef TARGET_WIN32
8425 /*
8426 * Under windows, delegates passed to native code must use the STDCALL
8427 * calling convention.
8428 */
8429 csig->call_convention = MONO_CALL_STDCALL;
8430 #endif
8431
8432 sig = mono_method_signature (method);
8433
8434 /* Change default calling convention if needed */
8435 /* Why is this a modopt ? */
8436 if (sig->ret && sig->ret->num_mods) {
8437 for (i = 0; i < sig->ret->num_mods; ++i) {
8438 MonoError error;
8439 MonoClass *cmod_class = mono_class_get_checked (method->klass->image, sig->ret->modifiers [i].token, &error);
8440 g_assert (mono_error_ok (&error));
8441 if ((cmod_class->image == mono_defaults.corlib) && !strcmp (cmod_class->name_space, "System.Runtime.CompilerServices")) {
8442 if (!strcmp (cmod_class->name, "CallConvCdecl"))
8443 csig->call_convention = MONO_CALL_C;
8444 else if (!strcmp (cmod_class->name, "CallConvStdcall"))
8445 csig->call_convention = MONO_CALL_STDCALL;
8446 else if (!strcmp (cmod_class->name, "CallConvFastcall"))
8447 csig->call_convention = MONO_CALL_FASTCALL;
8448 else if (!strcmp (cmod_class->name, "CallConvThiscall"))
8449 csig->call_convention = MONO_CALL_THISCALL;
8450 }
8451 }
8452 }
8453 }
8454
8455 /*
8456 * generates IL code to call managed methods from unmanaged code
8457 * If target_handle==0, the wrapper info will be a WrapperInfo structure.
8458 */
8459 MonoMethod *
8460 mono_marshal_get_managed_wrapper (MonoMethod *method, MonoClass *delegate_klass, uint32_t target_handle)
8461 {
8462 MonoError error;
8463 MonoMethodSignature *sig, *csig, *invoke_sig;
8464 MonoMethodBuilder *mb;
8465 MonoMethod *res, *invoke;
8466 MonoMarshalSpec **mspecs;
8467 MonoMethodPInvoke piinfo;
8468 GHashTable *cache;
8469 int i;
8470 EmitMarshalContext m;
8471
8472 g_assert (method != NULL);
8473 g_assert (!(method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL));
8474
8475 /*
8476 * FIXME: Should cache the method+delegate type pair, since the same method
8477 * could be called with different delegates, thus different marshalling
8478 * options.
8479 */
8480 cache = get_cache (&mono_method_get_wrapper_cache (method)->managed_wrapper_cache, mono_aligned_addr_hash, NULL);
8481
8482 if (!target_handle && (res = mono_marshal_find_in_cache (cache, method)))
8483 return res;
8484
8485 invoke = mono_get_delegate_invoke (delegate_klass);
8486 invoke_sig = mono_method_signature (invoke);
8487
8488 mspecs = g_new0 (MonoMarshalSpec*, mono_method_signature (invoke)->param_count + 1);
8489 mono_method_get_marshal_info (invoke, mspecs);
8490
8491 sig = mono_method_signature (method);
8492
8493 mb = mono_mb_new (method->klass, method->name, MONO_WRAPPER_NATIVE_TO_MANAGED);
8494
8495 /*the target gchandle must be the first entry after size and the wrapper itself.*/
8496 mono_mb_add_data (mb, GUINT_TO_POINTER (target_handle));
8497
8498 /* we copy the signature, so that we can modify it */
8499 if (target_handle)
8500 /* Need to free this later */
8501 csig = mono_metadata_signature_dup (invoke_sig);
8502 else
8503 csig = mono_metadata_signature_dup_full (method->klass->image, invoke_sig);
8504 csig->hasthis = 0;
8505 csig->pinvoke = 1;
8506
8507 memset (&m, 0, sizeof (m));
8508 m.mb = mb;
8509 m.sig = sig;
8510 m.piinfo = NULL;
8511 m.retobj_var = 0;
8512 m.csig = csig;
8513 m.image = method->klass->image;
8514
8515 mono_marshal_set_callconv_from_modopt (invoke, csig);
8516
8517 /* The attribute is only available in Net 2.0 */
8518 if (mono_class_try_get_unmanaged_function_pointer_attribute_class ()) {
8519 MonoCustomAttrInfo *cinfo;
8520 MonoCustomAttrEntry *attr;
8521
8522 /*
8523 * The pinvoke attributes are stored in a real custom attribute. Obtain the
8524 * contents of the attribute without constructing it, as that might not be
8525 * possible when running in cross-compiling mode.
8526 */
8527 cinfo = mono_custom_attrs_from_class_checked (delegate_klass, &error);
8528 mono_error_assert_ok (&error);
8529 attr = NULL;
8530 if (cinfo) {
8531 for (i = 0; i < cinfo->num_attrs; ++i) {
8532 MonoClass *ctor_class = cinfo->attrs [i].ctor->klass;
8533 if (mono_class_has_parent (ctor_class, mono_class_try_get_unmanaged_function_pointer_attribute_class ())) {
8534 attr = &cinfo->attrs [i];
8535 break;
8536 }
8537 }
8538 }
8539 if (attr) {
8540 MonoArray *typed_args, *named_args;
8541 CattrNamedArg *arginfo;
8542 MonoObject *o;
8543 gint32 call_conv;
8544 gint32 charset = 0;
8545 MonoBoolean set_last_error = 0;
8546 MonoError error;
8547
8548 mono_reflection_create_custom_attr_data_args (mono_defaults.corlib, attr->ctor, attr->data, attr->data_size, &typed_args, &named_args, &arginfo, &error);
8549 g_assert (mono_error_ok (&error));
8550 g_assert (mono_array_length (typed_args) == 1);
8551
8552 /* typed args */
8553 o = mono_array_get (typed_args, MonoObject*, 0);
8554 call_conv = *(gint32*)mono_object_unbox (o);
8555
8556 /* named args */
8557 for (i = 0; i < mono_array_length (named_args); ++i) {
8558 CattrNamedArg *narg = &arginfo [i];
8559
8560 o = mono_array_get (named_args, MonoObject*, i);
8561
8562 g_assert (narg->field);
8563 if (!strcmp (narg->field->name, "CharSet")) {
8564 charset = *(gint32*)mono_object_unbox (o);
8565 } else if (!strcmp (narg->field->name, "SetLastError")) {
8566 set_last_error = *(MonoBoolean*)mono_object_unbox (o);
8567 } else if (!strcmp (narg->field->name, "BestFitMapping")) {
8568 // best_fit_mapping = *(MonoBoolean*)mono_object_unbox (o);
8569 } else if (!strcmp (narg->field->name, "ThrowOnUnmappableChar")) {
8570 // throw_on_unmappable = *(MonoBoolean*)mono_object_unbox (o);
8571 } else {
8572 g_assert_not_reached ();
8573 }
8574 }
8575
8576 g_free (arginfo);
8577
8578 memset (&piinfo, 0, sizeof (piinfo));
8579 m.piinfo = &piinfo;
8580 piinfo.piflags = (call_conv << 8) | (charset ? (charset - 1) * 2 : 1) | set_last_error;
8581
8582 csig->call_convention = call_conv - 1;
8583 }
8584
8585 if (cinfo && !cinfo->cached)
8586 mono_custom_attrs_free (cinfo);
8587 }
8588
8589 mono_marshal_emit_managed_wrapper (mb, invoke_sig, mspecs, &m, method, target_handle);
8590
8591 if (!target_handle) {
8592 WrapperInfo *info;
8593
8594 // FIXME: Associate it with the method+delegate_klass pair
8595 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_NONE);
8596 info->d.native_to_managed.method = method;
8597 info->d.native_to_managed.klass = delegate_klass;
8598
8599 res = mono_mb_create_and_cache_full (cache, method,
8600 mb, csig, sig->param_count + 16,
8601 info, NULL);
8602 } else {
8603 #ifndef DISABLE_JIT
8604 mb->dynamic = TRUE;
8605 #endif
8606 res = mono_mb_create (mb, csig, sig->param_count + 16, NULL);
8607 }
8608 mono_mb_free (mb);
8609
8610 for (i = mono_method_signature (invoke)->param_count; i >= 0; i--)
8611 if (mspecs [i])
8612 mono_metadata_free_marshal_spec (mspecs [i]);
8613 g_free (mspecs);
8614
8615 /* mono_method_print_code (res); */
8616
8617 return res;
8618 }
8619
8620 gpointer
8621 mono_marshal_get_vtfixup_ftnptr (MonoImage *image, guint32 token, guint16 type)
8622 {
8623 MonoError error;
8624 MonoMethod *method;
8625 MonoMethodSignature *sig;
8626 MonoMethodBuilder *mb;
8627 int i, param_count;
8628
8629 g_assert (token);
8630
8631 method = mono_get_method_checked (image, token, NULL, NULL, &error);
8632 if (!method)
8633 g_error ("Could not load vtfixup token 0x%x due to %s", token, mono_error_get_message (&error));
8634 g_assert (method);
8635
8636 if (type & (VTFIXUP_TYPE_FROM_UNMANAGED | VTFIXUP_TYPE_FROM_UNMANAGED_RETAIN_APPDOMAIN)) {
8637 MonoMethodSignature *csig;
8638 MonoMarshalSpec **mspecs;
8639 EmitMarshalContext m;
8640
8641 sig = mono_method_signature (method);
8642 g_assert (!sig->hasthis);
8643
8644 mspecs = g_new0 (MonoMarshalSpec*, sig->param_count + 1);
8645 mono_method_get_marshal_info (method, mspecs);
8646
8647 mb = mono_mb_new (method->klass, method->name, MONO_WRAPPER_NATIVE_TO_MANAGED);
8648 csig = mono_metadata_signature_dup_full (image, sig);
8649 csig->hasthis = 0;
8650 csig->pinvoke = 1;
8651
8652 memset (&m, 0, sizeof (m));
8653 m.mb = mb;
8654 m.sig = sig;
8655 m.piinfo = NULL;
8656 m.retobj_var = 0;
8657 m.csig = csig;
8658 m.image = image;
8659
8660 mono_marshal_set_callconv_from_modopt (method, csig);
8661
8662 /* FIXME: Implement VTFIXUP_TYPE_FROM_UNMANAGED_RETAIN_APPDOMAIN. */
8663
8664 mono_marshal_emit_managed_wrapper (mb, sig, mspecs, &m, method, 0);
8665
8666 #ifndef DISABLE_JIT
8667 mb->dynamic = TRUE;
8668 #endif
8669 method = mono_mb_create (mb, csig, sig->param_count + 16, NULL);
8670 mono_mb_free (mb);
8671
8672 for (i = sig->param_count; i >= 0; i--)
8673 if (mspecs [i])
8674 mono_metadata_free_marshal_spec (mspecs [i]);
8675 g_free (mspecs);
8676
8677 gpointer compiled_ptr = mono_compile_method_checked (method, &error);
8678 mono_error_assert_ok (&error);
8679 return compiled_ptr;
8680 }
8681
8682 sig = mono_method_signature (method);
8683 mb = mono_mb_new (method->klass, method->name, MONO_WRAPPER_MANAGED_TO_MANAGED);
8684
8685 param_count = sig->param_count + sig->hasthis;
8686 #ifndef DISABLE_JIT
8687 for (i = 0; i < param_count; i++)
8688 mono_mb_emit_ldarg (mb, i);
8689
8690 if (type & VTFIXUP_TYPE_CALL_MOST_DERIVED)
8691 mono_mb_emit_op (mb, CEE_CALLVIRT, method);
8692 else
8693 mono_mb_emit_op (mb, CEE_CALL, method);
8694 mono_mb_emit_byte (mb, CEE_RET);
8695
8696 mb->dynamic = TRUE;
8697 #endif
8698
8699 method = mono_mb_create (mb, sig, param_count, NULL);
8700 mono_mb_free (mb);
8701
8702 gpointer compiled_ptr = mono_compile_method_checked (method, &error);
8703 mono_error_assert_ok (&error);
8704 return compiled_ptr;
8705 }
8706
8707 #ifndef DISABLE_JIT
8708
8709 /*
8710 * The code directly following this is the cache hit, value positive branch
8711 *
8712 * This function takes a new method builder with 0 locals and adds two locals
8713 * to create multiple out-branches and the fall through state of having the object
8714 * on the stack after a cache miss
8715 */
8716 static void
8717 generate_check_cache (int obj_arg_position, int class_arg_position, int cache_arg_position, // In-parameters
8718 int *null_obj, int *cache_hit_neg, int *cache_hit_pos, // Out-parameters
8719 MonoMethodBuilder *mb)
8720 {
8721 int cache_miss_pos;
8722
8723 /* allocate local 0 (pointer) obj_vtable */
8724 mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
8725 /* allocate local 1 (pointer) cached_vtable */
8726 mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
8727
8728 /*if (!obj)*/
8729 mono_mb_emit_ldarg (mb, obj_arg_position);
8730 *null_obj = mono_mb_emit_branch (mb, CEE_BRFALSE);
8731
8732 /*obj_vtable = obj->vtable;*/
8733 mono_mb_emit_ldarg (mb, obj_arg_position);
8734 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoObject, vtable));
8735 mono_mb_emit_byte (mb, CEE_LDIND_I);
8736 mono_mb_emit_stloc (mb, 0);
8737
8738 /* cached_vtable = *cache*/
8739 mono_mb_emit_ldarg (mb, cache_arg_position);
8740 mono_mb_emit_byte (mb, CEE_LDIND_I);
8741 mono_mb_emit_stloc (mb, 1);
8742
8743 mono_mb_emit_ldloc (mb, 1);
8744 mono_mb_emit_byte (mb, CEE_LDC_I4);
8745 mono_mb_emit_i4 (mb, ~0x1);
8746 mono_mb_emit_byte (mb, CEE_CONV_I);
8747 mono_mb_emit_byte (mb, CEE_AND);
8748 mono_mb_emit_ldloc (mb, 0);
8749 /*if ((cached_vtable & ~0x1)== obj_vtable)*/
8750 cache_miss_pos = mono_mb_emit_branch (mb, CEE_BNE_UN);
8751
8752 /*return (cached_vtable & 0x1) ? NULL : obj;*/
8753 mono_mb_emit_ldloc (mb, 1);
8754 mono_mb_emit_byte(mb, CEE_LDC_I4_1);
8755 mono_mb_emit_byte (mb, CEE_CONV_U);
8756 mono_mb_emit_byte (mb, CEE_AND);
8757 *cache_hit_neg = mono_mb_emit_branch (mb, CEE_BRTRUE);
8758 *cache_hit_pos = mono_mb_emit_branch (mb, CEE_BR);
8759
8760 // slow path
8761 mono_mb_patch_branch (mb, cache_miss_pos);
8762
8763 // if isinst
8764 mono_mb_emit_ldarg (mb, obj_arg_position);
8765 mono_mb_emit_ldarg (mb, class_arg_position);
8766 mono_mb_emit_ldarg (mb, cache_arg_position);
8767 mono_mb_emit_icall (mb, mono_marshal_isinst_with_cache);
8768 }
8769
8770 #endif /* DISABLE_JIT */
8771
8772 /*
8773 * This does the equivalent of mono_object_castclass_with_cache.
8774 */
8775 MonoMethod *
8776 mono_marshal_get_castclass_with_cache (void)
8777 {
8778 static MonoMethod *cached;
8779 MonoMethod *res;
8780 MonoMethodBuilder *mb;
8781 MonoMethodSignature *sig;
8782 int return_null_pos, positive_cache_hit_pos, negative_cache_hit_pos, invalid_cast_pos;
8783 WrapperInfo *info;
8784
8785 const int obj_arg_position = 0;
8786 const int class_arg_position = 1;
8787 const int cache_arg_position = 2;
8788
8789 if (cached)
8790 return cached;
8791
8792 mb = mono_mb_new (mono_defaults.object_class, "__castclass_with_cache", MONO_WRAPPER_CASTCLASS);
8793 sig = mono_metadata_signature_alloc (mono_defaults.corlib, 3);
8794 sig->params [obj_arg_position] = &mono_defaults.object_class->byval_arg;
8795 sig->params [class_arg_position] = &mono_defaults.int_class->byval_arg;
8796 sig->params [cache_arg_position] = &mono_defaults.int_class->byval_arg;
8797 sig->ret = &mono_defaults.object_class->byval_arg;
8798 sig->pinvoke = 0;
8799
8800 #ifndef DISABLE_JIT
8801 generate_check_cache (obj_arg_position, class_arg_position, cache_arg_position,
8802 &return_null_pos, &negative_cache_hit_pos, &positive_cache_hit_pos, mb);
8803 invalid_cast_pos = mono_mb_emit_branch (mb, CEE_BRFALSE);
8804
8805 /*return obj;*/
8806 mono_mb_patch_branch (mb, positive_cache_hit_pos);
8807 mono_mb_emit_ldarg (mb, obj_arg_position);
8808 mono_mb_emit_byte (mb, CEE_RET);
8809
8810 /*fails*/
8811 mono_mb_patch_branch (mb, negative_cache_hit_pos);
8812 mono_mb_patch_branch (mb, invalid_cast_pos);
8813 mono_mb_emit_exception (mb, "InvalidCastException", NULL);
8814
8815 /*return null*/
8816 mono_mb_patch_branch (mb, return_null_pos);
8817 mono_mb_emit_byte (mb, CEE_LDNULL);
8818 mono_mb_emit_byte (mb, CEE_RET);
8819 #endif /* DISABLE_JIT */
8820
8821 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_CASTCLASS_WITH_CACHE);
8822 res = mono_mb_create (mb, sig, 8, info);
8823 STORE_STORE_FENCE;
8824
8825 if (InterlockedCompareExchangePointer ((volatile gpointer *)&cached, res, NULL)) {
8826 mono_free_method (res);
8827 mono_metadata_free_method_signature (sig);
8828 }
8829 mono_mb_free (mb);
8830
8831 return cached;
8832 }
8833
8834 /* this is an icall */
8835 static MonoObject *
8836 mono_marshal_isinst_with_cache (MonoObject *obj, MonoClass *klass, uintptr_t *cache)
8837 {
8838 MonoError error;
8839 MonoObject *isinst = mono_object_isinst_checked (obj, klass, &error);
8840 if (mono_error_set_pending_exception (&error))
8841 return NULL;
8842
8843 #ifndef DISABLE_REMOTING
8844 if (obj->vtable->klass == mono_defaults.transparent_proxy_class)
8845 return isinst;
8846 #endif
8847
8848 uintptr_t cache_update = (uintptr_t)obj->vtable;
8849 if (!isinst)
8850 cache_update = cache_update | 0x1;
8851
8852 *cache = cache_update;
8853
8854 return isinst;
8855 }
8856
8857 /*
8858 * This does the equivalent of mono_object_isinst_with_cache.
8859 */
8860 MonoMethod *
8861 mono_marshal_get_isinst_with_cache (void)
8862 {
8863 static MonoMethod *cached;
8864 MonoMethod *res;
8865 MonoMethodBuilder *mb;
8866 MonoMethodSignature *sig;
8867 int return_null_pos, positive_cache_hit_pos, negative_cache_hit_pos;
8868 WrapperInfo *info;
8869
8870 const int obj_arg_position = 0;
8871 const int class_arg_position = 1;
8872 const int cache_arg_position = 2;
8873
8874 if (cached)
8875 return cached;
8876
8877 mb = mono_mb_new (mono_defaults.object_class, "__isinst_with_cache", MONO_WRAPPER_CASTCLASS);
8878 sig = mono_metadata_signature_alloc (mono_defaults.corlib, 3);
8879 // The object
8880 sig->params [obj_arg_position] = &mono_defaults.object_class->byval_arg;
8881 // The class
8882 sig->params [class_arg_position] = &mono_defaults.int_class->byval_arg;
8883 // The cache
8884 sig->params [cache_arg_position] = &mono_defaults.int_class->byval_arg;
8885 sig->ret = &mono_defaults.object_class->byval_arg;
8886 sig->pinvoke = 0;
8887
8888 #ifndef DISABLE_JIT
8889 generate_check_cache (obj_arg_position, class_arg_position, cache_arg_position,
8890 &return_null_pos, &negative_cache_hit_pos, &positive_cache_hit_pos, mb);
8891 // Return the object gotten via the slow path.
8892 mono_mb_emit_byte (mb, CEE_RET);
8893
8894 // return NULL;
8895 mono_mb_patch_branch (mb, negative_cache_hit_pos);
8896 mono_mb_patch_branch (mb, return_null_pos);
8897 mono_mb_emit_byte (mb, CEE_LDNULL);
8898 mono_mb_emit_byte (mb, CEE_RET);
8899
8900 // return obj
8901 mono_mb_patch_branch (mb, positive_cache_hit_pos);
8902 mono_mb_emit_ldarg (mb, obj_arg_position);
8903 mono_mb_emit_byte (mb, CEE_RET);
8904 #endif
8905
8906 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_ISINST_WITH_CACHE);
8907 res = mono_mb_create (mb, sig, 8, info);
8908 STORE_STORE_FENCE;
8909
8910 if (InterlockedCompareExchangePointer ((volatile gpointer *)&cached, res, NULL)) {
8911 mono_free_method (res);
8912 mono_metadata_free_method_signature (sig);
8913 }
8914 mono_mb_free (mb);
8915
8916 return cached;
8917 }
8918
8919 /*
8920 * mono_marshal_get_isinst:
8921 * @klass: the type of the field
8922 *
8923 * This method generates a function which can be used to check if an object is
8924 * an instance of the given type, icluding the case where the object is a proxy.
8925 * The generated function has the following signature:
8926 * MonoObject* __isinst_wrapper_ (MonoObject *obj)
8927 */
8928 MonoMethod *
8929 mono_marshal_get_isinst (MonoClass *klass)
8930 {
8931 static MonoMethodSignature *isint_sig = NULL;
8932 GHashTable *cache;
8933 MonoMethod *res;
8934 WrapperInfo *info;
8935 int pos_was_ok, pos_end;
8936 #ifndef DISABLE_REMOTING
8937 int pos_end2, pos_failed;
8938 #endif
8939 char *name;
8940 MonoMethodBuilder *mb;
8941
8942 cache = get_cache (&klass->image->isinst_cache, mono_aligned_addr_hash, NULL);
8943 if ((res = mono_marshal_find_in_cache (cache, klass)))
8944 return res;
8945
8946 if (!isint_sig) {
8947 isint_sig = mono_metadata_signature_alloc (mono_defaults.corlib, 1);
8948 isint_sig->params [0] = &mono_defaults.object_class->byval_arg;
8949 isint_sig->ret = &mono_defaults.object_class->byval_arg;
8950 isint_sig->pinvoke = 0;
8951 }
8952
8953 name = g_strdup_printf ("__isinst_wrapper_%s", klass->name);
8954 mb = mono_mb_new (mono_defaults.object_class, name, MONO_WRAPPER_ISINST);
8955 g_free (name);
8956
8957 mb->method->save_lmf = 1;
8958
8959 #ifndef DISABLE_JIT
8960 /* check if the object is a proxy that needs special cast */
8961 mono_mb_emit_ldarg (mb, 0);
8962 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
8963 mono_mb_emit_op (mb, CEE_MONO_CISINST, klass);
8964
8965 /* The result of MONO_CISINST can be:
8966 0) the type check succeeded
8967 1) the type check did not succeed
8968 2) a CanCastTo call is needed */
8969 #ifndef DISABLE_REMOTING
8970 mono_mb_emit_byte (mb, CEE_DUP);
8971 pos_was_ok = mono_mb_emit_branch (mb, CEE_BRFALSE);
8972
8973 mono_mb_emit_byte (mb, CEE_LDC_I4_2);
8974 pos_failed = mono_mb_emit_branch (mb, CEE_BNE_UN);
8975
8976 /* get the real proxy from the transparent proxy*/
8977
8978 mono_mb_emit_ldarg (mb, 0);
8979 mono_mb_emit_managed_call (mb, mono_marshal_get_proxy_cancast (klass), NULL);
8980 pos_end = mono_mb_emit_branch (mb, CEE_BR);
8981
8982 /* fail */
8983
8984 mono_mb_patch_branch (mb, pos_failed);
8985 mono_mb_emit_byte (mb, CEE_LDNULL);
8986 pos_end2 = mono_mb_emit_branch (mb, CEE_BR);
8987
8988 /* success */
8989
8990 mono_mb_patch_branch (mb, pos_was_ok);
8991 mono_mb_emit_byte (mb, CEE_POP);
8992 mono_mb_emit_ldarg (mb, 0);
8993
8994 /* the end */
8995
8996 mono_mb_patch_branch (mb, pos_end);
8997 mono_mb_patch_branch (mb, pos_end2);
8998 mono_mb_emit_byte (mb, CEE_RET);
8999 #else
9000 pos_was_ok = mono_mb_emit_branch (mb, CEE_BRFALSE);
9001
9002 /* fail */
9003
9004 mono_mb_emit_byte (mb, CEE_LDNULL);
9005 pos_end = mono_mb_emit_branch (mb, CEE_BR);
9006
9007 /* success */
9008
9009 mono_mb_patch_branch (mb, pos_was_ok);
9010 mono_mb_emit_ldarg (mb, 0);
9011
9012 /* the end */
9013
9014 mono_mb_patch_branch (mb, pos_end);
9015 mono_mb_emit_byte (mb, CEE_RET);
9016 #endif /* DISABLE_REMOTING */
9017 #endif /* DISABLE_JIT */
9018
9019 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_NONE);
9020 info->d.proxy.klass = klass;
9021 res = mono_mb_create_and_cache_full (cache, klass, mb, isint_sig, isint_sig->param_count + 16, info, NULL);
9022 mono_mb_free (mb);
9023
9024 return res;
9025 }
9026
9027 /*
9028 * mono_marshal_get_castclass:
9029 * @klass: the type of the field
9030 *
9031 * This method generates a function which can be used to cast an object to
9032 * an instance of the given type, icluding the case where the object is a proxy.
9033 * The generated function has the following signature:
9034 * MonoObject* __castclass_wrapper_ (MonoObject *obj)
9035 */
9036 MonoMethod *
9037 mono_marshal_get_castclass (MonoClass *klass)
9038 {
9039 static MonoMethodSignature *castclass_sig = NULL;
9040 GHashTable *cache;
9041 MonoMethod *res;
9042 #ifndef DISABLE_REMOTING
9043 int pos_was_ok, pos_was_ok2;
9044 #endif
9045 char *name;
9046 MonoMethodBuilder *mb;
9047 WrapperInfo *info;
9048
9049 cache = get_cache (&klass->image->castclass_cache, mono_aligned_addr_hash, NULL);
9050 if ((res = mono_marshal_find_in_cache (cache, klass)))
9051 return res;
9052
9053 if (!castclass_sig) {
9054 castclass_sig = mono_metadata_signature_alloc (mono_defaults.corlib, 1);
9055 castclass_sig->params [0] = &mono_defaults.object_class->byval_arg;
9056 castclass_sig->ret = &mono_defaults.object_class->byval_arg;
9057 castclass_sig->pinvoke = 0;
9058 }
9059
9060 name = g_strdup_printf ("__castclass_wrapper_%s", klass->name);
9061 mb = mono_mb_new (mono_defaults.object_class, name, MONO_WRAPPER_CASTCLASS);
9062 g_free (name);
9063
9064 mb->method->save_lmf = 1;
9065
9066 #ifndef DISABLE_JIT
9067 /* check if the object is a proxy that needs special cast */
9068 mono_mb_emit_ldarg (mb, 0);
9069 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
9070 mono_mb_emit_op (mb, CEE_MONO_CCASTCLASS, klass);
9071
9072 /* The result of MONO_CCASTCLASS can be:
9073 0) the cast is valid
9074 1) cast of unknown proxy type
9075 or an exception if the cast is is invalid
9076 */
9077 #ifndef DISABLE_REMOTING
9078 pos_was_ok = mono_mb_emit_branch (mb, CEE_BRFALSE);
9079
9080 /* get the real proxy from the transparent proxy*/
9081
9082 mono_mb_emit_ldarg (mb, 0);
9083 mono_mb_emit_managed_call (mb, mono_marshal_get_proxy_cancast (klass), NULL);
9084 pos_was_ok2 = mono_mb_emit_branch (mb, CEE_BRTRUE);
9085
9086 /* fail */
9087 mono_mb_emit_exception (mb, "InvalidCastException", NULL);
9088
9089 /* success */
9090 mono_mb_patch_branch (mb, pos_was_ok);
9091 mono_mb_patch_branch (mb, pos_was_ok2);
9092 #else
9093 /* MONO_CCASTCLASS leaves an int in the stack with the result, pop it. */
9094 mono_mb_emit_byte (mb, CEE_POP);
9095 #endif /* DISABLE_REMOTING */
9096
9097 mono_mb_emit_ldarg (mb, 0);
9098
9099 /* the end */
9100 mono_mb_emit_byte (mb, CEE_RET);
9101 #endif /* DISABLE_JIT */
9102
9103 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_NONE);
9104
9105 res = mono_mb_create_and_cache_full (cache, klass, mb, castclass_sig, castclass_sig->param_count + 16,
9106 info, NULL);
9107 mono_mb_free (mb);
9108
9109 return res;
9110 }
9111
9112 /**
9113 * mono_marshal_get_struct_to_ptr:
9114 * @klass:
9115 *
9116 * generates IL code for StructureToPtr (object structure, IntPtr ptr, bool fDeleteOld)
9117 */
9118 MonoMethod *
9119 mono_marshal_get_struct_to_ptr (MonoClass *klass)
9120 {
9121 MonoMethodBuilder *mb;
9122 static MonoMethod *stoptr = NULL;
9123 MonoMethod *res;
9124 WrapperInfo *info;
9125
9126 g_assert (klass != NULL);
9127
9128 mono_marshal_load_type_info (klass);
9129
9130 if (klass->marshal_info->str_to_ptr)
9131 return klass->marshal_info->str_to_ptr;
9132
9133 if (!stoptr)
9134 stoptr = mono_class_get_method_from_name (mono_defaults.marshal_class, "StructureToPtr", 3);
9135 g_assert (stoptr);
9136
9137 mb = mono_mb_new (klass, stoptr->name, MONO_WRAPPER_UNKNOWN);
9138
9139 #ifndef DISABLE_JIT
9140 if (klass->blittable) {
9141 mono_mb_emit_byte (mb, CEE_LDARG_1);
9142 mono_mb_emit_byte (mb, CEE_LDARG_0);
9143 mono_mb_emit_ldflda (mb, sizeof (MonoObject));
9144 mono_mb_emit_icon (mb, mono_class_value_size (klass, NULL));
9145 mono_mb_emit_byte (mb, CEE_PREFIX1);
9146 mono_mb_emit_byte (mb, CEE_CPBLK);
9147 } else {
9148
9149 /* allocate local 0 (pointer) src_ptr */
9150 mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
9151 /* allocate local 1 (pointer) dst_ptr */
9152 mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
9153 /* allocate local 2 (boolean) delete_old */
9154 mono_mb_add_local (mb, &mono_defaults.boolean_class->byval_arg);
9155 mono_mb_emit_byte (mb, CEE_LDARG_2);
9156 mono_mb_emit_stloc (mb, 2);
9157
9158 /* initialize src_ptr to point to the start of object data */
9159 mono_mb_emit_byte (mb, CEE_LDARG_0);
9160 mono_mb_emit_ldflda (mb, sizeof (MonoObject));
9161 mono_mb_emit_stloc (mb, 0);
9162
9163 /* initialize dst_ptr */
9164 mono_mb_emit_byte (mb, CEE_LDARG_1);
9165 mono_mb_emit_stloc (mb, 1);
9166
9167 emit_struct_conv (mb, klass, FALSE);
9168 }
9169
9170 mono_mb_emit_byte (mb, CEE_RET);
9171 #endif
9172 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_STRUCTURE_TO_PTR);
9173 res = mono_mb_create (mb, mono_signature_no_pinvoke (stoptr), 0, info);
9174 mono_mb_free (mb);
9175
9176 mono_marshal_lock ();
9177 if (!klass->marshal_info->str_to_ptr)
9178 klass->marshal_info->str_to_ptr = res;
9179 else
9180 res = klass->marshal_info->str_to_ptr;
9181 mono_marshal_unlock ();
9182 return res;
9183 }
9184
9185 /**
9186 * mono_marshal_get_ptr_to_struct:
9187 * @klass:
9188 *
9189 * generates IL code for PtrToStructure (IntPtr src, object structure)
9190 */
9191 MonoMethod *
9192 mono_marshal_get_ptr_to_struct (MonoClass *klass)
9193 {
9194 MonoMethodBuilder *mb;
9195 static MonoMethodSignature *ptostr = NULL;
9196 MonoMethod *res;
9197 WrapperInfo *info;
9198
9199 g_assert (klass != NULL);
9200
9201 mono_marshal_load_type_info (klass);
9202
9203 if (klass->marshal_info->ptr_to_str)
9204 return klass->marshal_info->ptr_to_str;
9205
9206 if (!ptostr) {
9207 MonoMethodSignature *sig;
9208
9209 /* Create the signature corresponding to
9210 static void PtrToStructure (IntPtr ptr, object structure);
9211 defined in class/corlib/System.Runtime.InteropServices/Marshal.cs */
9212 sig = mono_create_icall_signature ("void ptr object");
9213 sig = mono_metadata_signature_dup_full (mono_defaults.corlib, sig);
9214 sig->pinvoke = 0;
9215 mono_memory_barrier ();
9216 ptostr = sig;
9217 }
9218
9219 mb = mono_mb_new (klass, "PtrToStructure", MONO_WRAPPER_UNKNOWN);
9220
9221 #ifndef DISABLE_JIT
9222 if (klass->blittable) {
9223 mono_mb_emit_byte (mb, CEE_LDARG_1);
9224 mono_mb_emit_ldflda (mb, sizeof (MonoObject));
9225 mono_mb_emit_byte (mb, CEE_LDARG_0);
9226 mono_mb_emit_icon (mb, mono_class_value_size (klass, NULL));
9227 mono_mb_emit_byte (mb, CEE_PREFIX1);
9228 mono_mb_emit_byte (mb, CEE_CPBLK);
9229 } else {
9230
9231 /* allocate local 0 (pointer) src_ptr */
9232 mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
9233 /* allocate local 1 (pointer) dst_ptr */
9234 mono_mb_add_local (mb, &klass->this_arg);
9235
9236 /* initialize src_ptr to point to the start of object data */
9237 mono_mb_emit_byte (mb, CEE_LDARG_0);
9238 mono_mb_emit_stloc (mb, 0);
9239
9240 /* initialize dst_ptr */
9241 mono_mb_emit_byte (mb, CEE_LDARG_1);
9242 mono_mb_emit_op (mb, CEE_UNBOX, klass);
9243 mono_mb_emit_stloc (mb, 1);
9244
9245 emit_struct_conv (mb, klass, TRUE);
9246 }
9247
9248 mono_mb_emit_byte (mb, CEE_RET);
9249 #endif
9250 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_PTR_TO_STRUCTURE);
9251 res = mono_mb_create (mb, ptostr, 0, info);
9252 mono_mb_free (mb);
9253
9254 mono_marshal_lock ();
9255 if (!klass->marshal_info->ptr_to_str)
9256 klass->marshal_info->ptr_to_str = res;
9257 else
9258 res = klass->marshal_info->ptr_to_str;
9259 mono_marshal_unlock ();
9260 return res;
9261 }
9262
9263 /*
9264 * Return a dummy wrapper for METHOD which is called by synchronized wrappers.
9265 * This is used to avoid infinite recursion since it is hard to determine where to
9266 * replace a method with its synchronized wrapper, and where not.
9267 * The runtime should execute METHOD instead of the wrapper.
9268 */
9269 MonoMethod *
9270 mono_marshal_get_synchronized_inner_wrapper (MonoMethod *method)
9271 {
9272 MonoMethodBuilder *mb;
9273 WrapperInfo *info;
9274 MonoMethodSignature *sig;
9275 MonoMethod *res;
9276 MonoGenericContext *ctx = NULL;
9277 MonoGenericContainer *container = NULL;
9278
9279 if (method->is_inflated && !mono_method_get_context (method)->method_inst) {
9280 ctx = &((MonoMethodInflated*)method)->context;
9281 method = ((MonoMethodInflated*)method)->declaring;
9282 container = mono_method_get_generic_container (method);
9283 if (!container)
9284 container = method->klass->generic_container;
9285 g_assert (container);
9286 }
9287
9288 mb = mono_mb_new (method->klass, method->name, MONO_WRAPPER_UNKNOWN);
9289 #ifndef DISABLE_JIT
9290 mono_mb_emit_exception_full (mb, "System", "ExecutionEngineException", "Shouldn't be called.");
9291 mono_mb_emit_byte (mb, CEE_RET);
9292 #endif
9293 sig = mono_metadata_signature_dup_full (method->klass->image, mono_method_signature (method));
9294
9295 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_SYNCHRONIZED_INNER);
9296 info->d.synchronized_inner.method = method;
9297 res = mono_mb_create (mb, sig, 0, info);
9298 mono_mb_free (mb);
9299 if (ctx) {
9300 MonoError error;
9301 res = mono_class_inflate_generic_method_checked (res, ctx, &error);
9302 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
9303 }
9304 return res;
9305 }
9306
9307 /*
9308 * generates IL code for the synchronized wrapper: the generated method
9309 * calls METHOD while locking 'this' or the parent type.
9310 */
9311 MonoMethod *
9312 mono_marshal_get_synchronized_wrapper (MonoMethod *method)
9313 {
9314 static MonoMethod *enter_method, *exit_method, *gettypefromhandle_method;
9315 MonoMethodSignature *sig;
9316 MonoExceptionClause *clause;
9317 MonoMethodBuilder *mb;
9318 MonoMethod *res;
9319 GHashTable *cache;
9320 WrapperInfo *info;
9321 int i, pos, pos2, this_local, taken_local, ret_local = 0;
9322 MonoGenericContext *ctx = NULL;
9323 MonoMethod *orig_method = NULL;
9324 MonoGenericContainer *container = NULL;
9325
9326 g_assert (method);
9327
9328 if (method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED)
9329 return method;
9330
9331 /* FIXME: Support generic methods too */
9332 if (method->is_inflated && !mono_method_get_context (method)->method_inst) {
9333 orig_method = method;
9334 ctx = &((MonoMethodInflated*)method)->context;
9335 method = ((MonoMethodInflated*)method)->declaring;
9336 container = mono_method_get_generic_container (method);
9337 if (!container)
9338 container = method->klass->generic_container;
9339 g_assert (container);
9340 }
9341
9342 /*
9343 * Check cache
9344 */
9345 if (ctx) {
9346 cache = get_cache (&((MonoMethodInflated*)orig_method)->owner->wrapper_caches.synchronized_cache, mono_aligned_addr_hash, NULL);
9347 res = check_generic_wrapper_cache (cache, orig_method, orig_method, method);
9348 if (res)
9349 return res;
9350 } else {
9351 cache = get_cache (&method->klass->image->wrapper_caches.synchronized_cache, mono_aligned_addr_hash, NULL);
9352 if ((res = mono_marshal_find_in_cache (cache, method)))
9353 return res;
9354 }
9355
9356 sig = mono_metadata_signature_dup_full (method->klass->image, mono_method_signature (method));
9357 sig->pinvoke = 0;
9358
9359 mb = mono_mb_new (method->klass, method->name, MONO_WRAPPER_SYNCHRONIZED);
9360
9361 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_NONE);
9362 info->d.synchronized.method = method;
9363
9364 #ifndef DISABLE_JIT
9365 mb->skip_visibility = 1;
9366 /* result */
9367 if (!MONO_TYPE_IS_VOID (sig->ret))
9368 ret_local = mono_mb_add_local (mb, sig->ret);
9369 #endif
9370
9371 if (method->klass->valuetype && !(method->flags & MONO_METHOD_ATTR_STATIC)) {
9372 mono_class_set_failure (method->klass, MONO_EXCEPTION_TYPE_LOAD, NULL);
9373 #ifndef DISABLE_JIT
9374 /* This will throw the type load exception when the wrapper is compiled */
9375 mono_mb_emit_byte (mb, CEE_LDNULL);
9376 mono_mb_emit_op (mb, CEE_ISINST, method->klass);
9377 mono_mb_emit_byte (mb, CEE_POP);
9378
9379 if (!MONO_TYPE_IS_VOID (sig->ret))
9380 mono_mb_emit_ldloc (mb, ret_local);
9381 mono_mb_emit_byte (mb, CEE_RET);
9382 #endif
9383
9384 res = mono_mb_create_and_cache_full (cache, method,
9385 mb, sig, sig->param_count + 16, info, NULL);
9386 mono_mb_free (mb);
9387
9388 return res;
9389 }
9390
9391 #ifndef DISABLE_JIT
9392 /* this */
9393 this_local = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
9394 taken_local = mono_mb_add_local (mb, &mono_defaults.boolean_class->byval_arg);
9395
9396 clause = (MonoExceptionClause *)mono_image_alloc0 (method->klass->image, sizeof (MonoExceptionClause));
9397 clause->flags = MONO_EXCEPTION_CLAUSE_FINALLY;
9398 #endif
9399
9400 mono_marshal_lock ();
9401
9402 if (!enter_method) {
9403 MonoMethodDesc *desc;
9404
9405 desc = mono_method_desc_new ("Monitor:Enter(object,bool&)", FALSE);
9406 enter_method = mono_method_desc_search_in_class (desc, mono_defaults.monitor_class);
9407 g_assert (enter_method);
9408 mono_method_desc_free (desc);
9409
9410 desc = mono_method_desc_new ("Monitor:Exit", FALSE);
9411 exit_method = mono_method_desc_search_in_class (desc, mono_defaults.monitor_class);
9412 g_assert (exit_method);
9413 mono_method_desc_free (desc);
9414
9415 desc = mono_method_desc_new ("Type:GetTypeFromHandle", FALSE);
9416 gettypefromhandle_method = mono_method_desc_search_in_class (desc, mono_defaults.systemtype_class);
9417 g_assert (gettypefromhandle_method);
9418 mono_method_desc_free (desc);
9419 }
9420
9421 mono_marshal_unlock ();
9422
9423 #ifndef DISABLE_JIT
9424 /* Push this or the type object */
9425 if (method->flags & METHOD_ATTRIBUTE_STATIC) {
9426 /* We have special handling for this in the JIT */
9427 int index = mono_mb_add_data (mb, method->klass);
9428 mono_mb_add_data (mb, mono_defaults.typehandle_class);
9429 mono_mb_emit_byte (mb, CEE_LDTOKEN);
9430 mono_mb_emit_i4 (mb, index);
9431
9432 mono_mb_emit_managed_call (mb, gettypefromhandle_method, NULL);
9433 }
9434 else
9435 mono_mb_emit_ldarg (mb, 0);
9436 mono_mb_emit_stloc (mb, this_local);
9437
9438 /* Call Monitor::Enter() */
9439 mono_mb_emit_ldloc (mb, this_local);
9440 mono_mb_emit_ldloc_addr (mb, taken_local);
9441 mono_mb_emit_managed_call (mb, enter_method, NULL);
9442
9443 clause->try_offset = mono_mb_get_label (mb);
9444
9445 /* Call the method */
9446 if (sig->hasthis)
9447 mono_mb_emit_ldarg (mb, 0);
9448 for (i = 0; i < sig->param_count; i++)
9449 mono_mb_emit_ldarg (mb, i + (sig->hasthis == TRUE));
9450
9451 if (ctx) {
9452 MonoError error;
9453 mono_mb_emit_managed_call (mb, mono_class_inflate_generic_method_checked (method, &container->context, &error), NULL);
9454 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
9455 } else {
9456 mono_mb_emit_managed_call (mb, method, NULL);
9457 }
9458
9459 if (!MONO_TYPE_IS_VOID (sig->ret))
9460 mono_mb_emit_stloc (mb, ret_local);
9461
9462 pos = mono_mb_emit_branch (mb, CEE_LEAVE);
9463
9464 clause->try_len = mono_mb_get_pos (mb) - clause->try_offset;
9465 clause->handler_offset = mono_mb_get_label (mb);
9466
9467 /* Call Monitor::Exit() if needed */
9468 mono_mb_emit_ldloc (mb, taken_local);
9469 pos2 = mono_mb_emit_branch (mb, CEE_BRFALSE);
9470 mono_mb_emit_ldloc (mb, this_local);
9471 mono_mb_emit_managed_call (mb, exit_method, NULL);
9472 mono_mb_patch_branch (mb, pos2);
9473 mono_mb_emit_byte (mb, CEE_ENDFINALLY);
9474
9475 clause->handler_len = mono_mb_get_pos (mb) - clause->handler_offset;
9476
9477 mono_mb_patch_branch (mb, pos);
9478 if (!MONO_TYPE_IS_VOID (sig->ret))
9479 mono_mb_emit_ldloc (mb, ret_local);
9480 mono_mb_emit_byte (mb, CEE_RET);
9481
9482 mono_mb_set_clauses (mb, 1, clause);
9483 #endif
9484
9485 if (ctx) {
9486 MonoMethod *def;
9487 def = mono_mb_create_and_cache_full (cache, method, mb, sig, sig->param_count + 16, info, NULL);
9488 res = cache_generic_wrapper (cache, orig_method, def, ctx, orig_method);
9489 } else {
9490 res = mono_mb_create_and_cache_full (cache, method,
9491 mb, sig, sig->param_count + 16, info, NULL);
9492 }
9493 mono_mb_free (mb);
9494
9495 return res;
9496 }
9497
9498
9499 /*
9500 * the returned method calls 'method' unboxing the this argument
9501 */
9502 MonoMethod *
9503 mono_marshal_get_unbox_wrapper (MonoMethod *method)
9504 {
9505 MonoMethodSignature *sig = mono_method_signature (method);
9506 int i;
9507 MonoMethodBuilder *mb;
9508 MonoMethod *res;
9509 GHashTable *cache;
9510 WrapperInfo *info;
9511
9512 cache = get_cache (&mono_method_get_wrapper_cache (method)->unbox_wrapper_cache, mono_aligned_addr_hash, NULL);
9513
9514 if ((res = mono_marshal_find_in_cache (cache, method)))
9515 return res;
9516
9517 mb = mono_mb_new (method->klass, method->name, MONO_WRAPPER_UNBOX);
9518
9519 g_assert (sig->hasthis);
9520
9521 #ifndef DISABLE_JIT
9522 mono_mb_emit_ldarg (mb, 0);
9523 mono_mb_emit_icon (mb, sizeof (MonoObject));
9524 mono_mb_emit_byte (mb, CEE_ADD);
9525 for (i = 0; i < sig->param_count; ++i)
9526 mono_mb_emit_ldarg (mb, i + 1);
9527 mono_mb_emit_managed_call (mb, method, NULL);
9528 mono_mb_emit_byte (mb, CEE_RET);
9529 #endif
9530
9531 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_NONE);
9532 info->d.unbox.method = method;
9533
9534 res = mono_mb_create_and_cache_full (cache, method,
9535 mb, sig, sig->param_count + 16, info, NULL);
9536 mono_mb_free (mb);
9537
9538 /* mono_method_print_code (res); */
9539
9540 return res;
9541 }
9542
9543 enum {
9544 STELEMREF_OBJECT, /*no check at all*/
9545 STELEMREF_SEALED_CLASS, /*check vtable->klass->element_type */
9546 STELEMREF_CLASS, /*only the klass->parents check*/
9547 STELEMREF_INTERFACE, /*interfaces without variant generic arguments. */
9548 STELEMREF_COMPLEX, /*arrays, MBR or types with variant generic args - go straight to icalls*/
9549 STELEMREF_KIND_COUNT
9550 };
9551
9552 static const char *strelemref_wrapper_name[] = {
9553 "object", "sealed_class", "class", "interface", "complex"
9554 };
9555
9556 static gboolean
9557 is_monomorphic_array (MonoClass *klass)
9558 {
9559 MonoClass *element_class;
9560 if (klass->rank != 1)
9561 return FALSE;
9562
9563 element_class = klass->element_class;
9564 return (element_class->flags & TYPE_ATTRIBUTE_SEALED) || element_class->valuetype;
9565 }
9566
9567 static int
9568 get_virtual_stelemref_kind (MonoClass *element_class)
9569 {
9570 if (element_class == mono_defaults.object_class)
9571 return STELEMREF_OBJECT;
9572 if (is_monomorphic_array (element_class))
9573 return STELEMREF_SEALED_CLASS;
9574 /* Compressed interface bitmaps require code that is quite complex, so don't optimize for it. */
9575 if (MONO_CLASS_IS_INTERFACE (element_class) && !mono_class_has_variant_generic_params (element_class))
9576 #ifdef COMPRESSED_INTERFACE_BITMAP
9577 return STELEMREF_COMPLEX;
9578 #else
9579 return STELEMREF_INTERFACE;
9580 #endif
9581 /*Arrays are sealed but are covariant on their element type, We can't use any of the fast paths.*/
9582 if (mono_class_is_marshalbyref (element_class) || element_class->rank || mono_class_has_variant_generic_params (element_class))
9583 return STELEMREF_COMPLEX;
9584 if (element_class->flags & TYPE_ATTRIBUTE_SEALED)
9585 return STELEMREF_SEALED_CLASS;
9586 return STELEMREF_CLASS;
9587 }
9588
9589 #ifndef DISABLE_JIT
9590
9591 static void
9592 load_array_element_address (MonoMethodBuilder *mb)
9593 {
9594 mono_mb_emit_ldarg (mb, 0);
9595 mono_mb_emit_ldarg (mb, 1);
9596 mono_mb_emit_op (mb, CEE_LDELEMA, mono_defaults.object_class);
9597 }
9598
9599 static void
9600 load_array_class (MonoMethodBuilder *mb, int aklass)
9601 {
9602 mono_mb_emit_ldarg (mb, 0);
9603 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoObject, vtable));
9604 mono_mb_emit_byte (mb, CEE_LDIND_I);
9605 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoVTable, klass));
9606 mono_mb_emit_byte (mb, CEE_LDIND_I);
9607 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoClass, element_class));
9608 mono_mb_emit_byte (mb, CEE_LDIND_I);
9609 mono_mb_emit_stloc (mb, aklass);
9610 }
9611
9612 static void
9613 load_value_class (MonoMethodBuilder *mb, int vklass)
9614 {
9615 mono_mb_emit_ldarg (mb, 2);
9616 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoObject, vtable));
9617 mono_mb_emit_byte (mb, CEE_LDIND_I);
9618 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoVTable, klass));
9619 mono_mb_emit_byte (mb, CEE_LDIND_I);
9620 mono_mb_emit_stloc (mb, vklass);
9621 }
9622 #endif
9623
9624 #if 0
9625 static void
9626 record_slot_vstore (MonoObject *array, size_t index, MonoObject *value)
9627 {
9628 char *name = mono_type_get_full_name (array->vtable->klass->element_class);
9629 printf ("slow vstore of %s\n", name);
9630 g_free (name);
9631 }
9632 #endif
9633
9634 /*
9635 * TODO:
9636 * - Separate simple interfaces from variant interfaces or mbr types. This way we can avoid the icall for them.
9637 * - Emit a (new) mono bytecode that produces OP_COND_EXC_NE_UN to raise ArrayTypeMismatch
9638 * - Maybe mve some MonoClass field into the vtable to reduce the number of loads
9639 * - Add a case for arrays of arrays.
9640 */
9641 static MonoMethod*
9642 get_virtual_stelemref_wrapper (int kind)
9643 {
9644 static MonoMethod *cached_methods [STELEMREF_KIND_COUNT] = { NULL }; /*object iface sealed regular*/
9645 static MonoMethodSignature *signature;
9646 MonoMethodBuilder *mb;
9647 MonoMethod *res;
9648 char *name;
9649 const char *param_names [16];
9650 guint32 b1, b2, b3, b4;
9651 int aklass, vklass, vtable, uiid;
9652 int array_slot_addr;
9653 WrapperInfo *info;
9654
9655 if (cached_methods [kind])
9656 return cached_methods [kind];
9657
9658 name = g_strdup_printf ("virt_stelemref_%s", strelemref_wrapper_name [kind]);
9659 mb = mono_mb_new (mono_defaults.object_class, name, MONO_WRAPPER_STELEMREF);
9660 g_free (name);
9661
9662 if (!signature) {
9663 MonoMethodSignature *sig = mono_metadata_signature_alloc (mono_defaults.corlib, 2);
9664
9665 /* void this::stelemref (size_t idx, void* value) */
9666 sig->ret = &mono_defaults.void_class->byval_arg;
9667 sig->hasthis = TRUE;
9668 sig->params [0] = &mono_defaults.int_class->byval_arg; /* this is a natural sized int */
9669 sig->params [1] = &mono_defaults.object_class->byval_arg;
9670 signature = sig;
9671 }
9672
9673 #ifndef DISABLE_JIT
9674 param_names [0] = "index";
9675 param_names [1] = "value";
9676 mono_mb_set_param_names (mb, param_names);
9677
9678 /*For now simply call plain old stelemref*/
9679 switch (kind) {
9680 case STELEMREF_OBJECT:
9681 /* ldelema (implicit bound check) */
9682 load_array_element_address (mb);
9683 /* do_store */
9684 mono_mb_emit_ldarg (mb, 2);
9685 mono_mb_emit_byte (mb, CEE_STIND_REF);
9686 mono_mb_emit_byte (mb, CEE_RET);
9687 break;
9688
9689 case STELEMREF_COMPLEX:
9690 /*
9691 <ldelema (bound check)>
9692 if (!value)
9693 goto store;
9694 if (!mono_object_isinst (value, aklass))
9695 goto do_exception;
9696
9697 do_store:
9698 *array_slot_addr = value;
9699
9700 do_exception:
9701 throw new ArrayTypeMismatchException ();
9702 */
9703
9704 aklass = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
9705 array_slot_addr = mono_mb_add_local (mb, &mono_defaults.object_class->this_arg);
9706
9707 #if 0
9708 {
9709 /*Use this to debug/record stores that are going thru the slow path*/
9710 MonoMethodSignature *csig;
9711 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 3);
9712 csig->ret = &mono_defaults.void_class->byval_arg;
9713 csig->params [0] = &mono_defaults.object_class->byval_arg;
9714 csig->params [1] = &mono_defaults.int_class->byval_arg; /* this is a natural sized int */
9715 csig->params [2] = &mono_defaults.object_class->byval_arg;
9716 mono_mb_emit_ldarg (mb, 0);
9717 mono_mb_emit_ldarg (mb, 1);
9718 mono_mb_emit_ldarg (mb, 2);
9719 mono_mb_emit_native_call (mb, csig, record_slot_vstore);
9720 }
9721 #endif
9722
9723 /* ldelema (implicit bound check) */
9724 load_array_element_address (mb);
9725 mono_mb_emit_stloc (mb, array_slot_addr);
9726
9727 /* if (!value) goto do_store */
9728 mono_mb_emit_ldarg (mb, 2);
9729 b1 = mono_mb_emit_branch (mb, CEE_BRFALSE);
9730
9731 /* aklass = array->vtable->klass->element_class */
9732 load_array_class (mb, aklass);
9733
9734 /*if (mono_object_isinst (value, aklass)) */
9735 mono_mb_emit_ldarg (mb, 2);
9736 mono_mb_emit_ldloc (mb, aklass);
9737 mono_mb_emit_icall (mb, mono_object_isinst_icall);
9738 b2 = mono_mb_emit_branch (mb, CEE_BRFALSE);
9739
9740 /* do_store: */
9741 mono_mb_patch_branch (mb, b1);
9742 mono_mb_emit_ldloc (mb, array_slot_addr);
9743 mono_mb_emit_ldarg (mb, 2);
9744 mono_mb_emit_byte (mb, CEE_STIND_REF);
9745 mono_mb_emit_byte (mb, CEE_RET);
9746
9747 /* do_exception: */
9748 mono_mb_patch_branch (mb, b2);
9749
9750 mono_mb_emit_exception (mb, "ArrayTypeMismatchException", NULL);
9751 break;
9752
9753 case STELEMREF_SEALED_CLASS:
9754 /*
9755 <ldelema (bound check)>
9756 if (!value)
9757 goto store;
9758
9759 aklass = array->vtable->klass->element_class;
9760 vklass = value->vtable->klass;
9761
9762 if (vklass != aklass)
9763 goto do_exception;
9764
9765 do_store:
9766 *array_slot_addr = value;
9767
9768 do_exception:
9769 throw new ArrayTypeMismatchException ();
9770 */
9771 aklass = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
9772 vklass = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
9773 array_slot_addr = mono_mb_add_local (mb, &mono_defaults.object_class->this_arg);
9774
9775
9776 /* ldelema (implicit bound check) */
9777 load_array_element_address (mb);
9778 mono_mb_emit_stloc (mb, array_slot_addr);
9779
9780 /* if (!value) goto do_store */
9781 mono_mb_emit_ldarg (mb, 2);
9782 b1 = mono_mb_emit_branch (mb, CEE_BRFALSE);
9783
9784 /* aklass = array->vtable->klass->element_class */
9785 load_array_class (mb, aklass);
9786
9787 /* vklass = value->vtable->klass */
9788 load_value_class (mb, vklass);
9789
9790 /*if (vklass != aklass) goto do_exception; */
9791 mono_mb_emit_ldloc (mb, aklass);
9792 mono_mb_emit_ldloc (mb, vklass);
9793 b2 = mono_mb_emit_branch (mb, CEE_BNE_UN);
9794
9795 /* do_store: */
9796 mono_mb_patch_branch (mb, b1);
9797 mono_mb_emit_ldloc (mb, array_slot_addr);
9798 mono_mb_emit_ldarg (mb, 2);
9799 mono_mb_emit_byte (mb, CEE_STIND_REF);
9800 mono_mb_emit_byte (mb, CEE_RET);
9801
9802 /* do_exception: */
9803 mono_mb_patch_branch (mb, b2);
9804 mono_mb_emit_exception (mb, "ArrayTypeMismatchException", NULL);
9805 break;
9806
9807 case STELEMREF_CLASS:
9808 /*
9809 the method:
9810 <ldelema (bound check)>
9811 if (!value)
9812 goto do_store;
9813
9814 aklass = array->vtable->klass->element_class;
9815 vklass = value->vtable->klass;
9816
9817 if (vklass->idepth < aklass->idepth)
9818 goto do_exception;
9819
9820 if (vklass->supertypes [aklass->idepth - 1] != aklass)
9821 goto do_exception;
9822
9823 do_store:
9824 *array_slot_addr = value;
9825 return;
9826
9827 long:
9828 throw new ArrayTypeMismatchException ();
9829 */
9830 aklass = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
9831 vklass = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
9832 array_slot_addr = mono_mb_add_local (mb, &mono_defaults.object_class->this_arg);
9833
9834 /* ldelema (implicit bound check) */
9835 load_array_element_address (mb);
9836 mono_mb_emit_stloc (mb, array_slot_addr);
9837
9838 /* if (!value) goto do_store */
9839 mono_mb_emit_ldarg (mb, 2);
9840 b1 = mono_mb_emit_branch (mb, CEE_BRFALSE);
9841
9842 /* aklass = array->vtable->klass->element_class */
9843 load_array_class (mb, aklass);
9844
9845 /* vklass = value->vtable->klass */
9846 load_value_class (mb, vklass);
9847
9848 /*if (mono_object_isinst (value, aklass)) */
9849 mono_mb_emit_ldarg (mb, 2);
9850 mono_mb_emit_ldloc (mb, aklass);
9851 mono_mb_emit_icall (mb, mono_object_isinst_icall);
9852 b2 = mono_mb_emit_branch (mb, CEE_BRFALSE);
9853
9854 /* if (vklass->idepth < aklass->idepth) goto failue */
9855 mono_mb_emit_ldloc (mb, vklass);
9856 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoClass, idepth));
9857 mono_mb_emit_byte (mb, CEE_LDIND_U2);
9858
9859 mono_mb_emit_ldloc (mb, aklass);
9860 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoClass, idepth));
9861 mono_mb_emit_byte (mb, CEE_LDIND_U2);
9862
9863 b3 = mono_mb_emit_branch (mb, CEE_BLT_UN);
9864
9865 /* if (vklass->supertypes [aklass->idepth - 1] != aklass) goto failure */
9866 mono_mb_emit_ldloc (mb, vklass);
9867 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoClass, supertypes));
9868 mono_mb_emit_byte (mb, CEE_LDIND_I);
9869
9870 mono_mb_emit_ldloc (mb, aklass);
9871 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoClass, idepth));
9872 mono_mb_emit_byte (mb, CEE_LDIND_U2);
9873 mono_mb_emit_icon (mb, 1);
9874 mono_mb_emit_byte (mb, CEE_SUB);
9875 mono_mb_emit_icon (mb, sizeof (void*));
9876 mono_mb_emit_byte (mb, CEE_MUL);
9877 mono_mb_emit_byte (mb, CEE_ADD);
9878 mono_mb_emit_byte (mb, CEE_LDIND_I);
9879
9880 mono_mb_emit_ldloc (mb, aklass);
9881 b4 = mono_mb_emit_branch (mb, CEE_BNE_UN);
9882
9883 /* do_store: */
9884 mono_mb_patch_branch (mb, b1);
9885 mono_mb_emit_ldloc (mb, array_slot_addr);
9886 mono_mb_emit_ldarg (mb, 2);
9887 mono_mb_emit_byte (mb, CEE_STIND_REF);
9888 mono_mb_emit_byte (mb, CEE_RET);
9889
9890 /* do_exception: */
9891 mono_mb_patch_branch (mb, b2);
9892 mono_mb_patch_branch (mb, b3);
9893 mono_mb_patch_branch (mb, b4);
9894
9895 mono_mb_emit_exception (mb, "ArrayTypeMismatchException", NULL);
9896 break;
9897
9898 case STELEMREF_INTERFACE:
9899 /*Mono *klass;
9900 MonoVTable *vt;
9901 unsigned uiid;
9902 if (value == NULL)
9903 goto store;
9904
9905 klass = array->obj.vtable->klass->element_class;
9906 vt = value->vtable;
9907 uiid = klass->interface_id;
9908 if (uiid > vt->max_interface_id)
9909 goto exception;
9910 if (!(vt->interface_bitmap [(uiid) >> 3] & (1 << ((uiid)&7))))
9911 goto exception;
9912 store:
9913 mono_array_setref (array, index, value);
9914 return;
9915 exception:
9916 mono_raise_exception (mono_get_exception_array_type_mismatch ());*/
9917
9918 array_slot_addr = mono_mb_add_local (mb, &mono_defaults.object_class->this_arg);
9919 aklass = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
9920 vtable = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
9921 uiid = mono_mb_add_local (mb, &mono_defaults.int32_class->byval_arg);
9922
9923 /* ldelema (implicit bound check) */
9924 load_array_element_address (mb);
9925 mono_mb_emit_stloc (mb, array_slot_addr);
9926
9927 /* if (!value) goto do_store */
9928 mono_mb_emit_ldarg (mb, 2);
9929 b1 = mono_mb_emit_branch (mb, CEE_BRFALSE);
9930
9931 /* klass = array->vtable->klass->element_class */
9932 load_array_class (mb, aklass);
9933
9934 /* vt = value->vtable */
9935 mono_mb_emit_ldarg (mb, 2);
9936 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoObject, vtable));
9937 mono_mb_emit_byte (mb, CEE_LDIND_I);
9938 mono_mb_emit_stloc (mb, vtable);
9939
9940 /* uiid = klass->interface_id; */
9941 mono_mb_emit_ldloc (mb, aklass);
9942 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoClass, interface_id));
9943 mono_mb_emit_byte (mb, CEE_LDIND_U2);
9944 mono_mb_emit_stloc (mb, uiid);
9945
9946 /*if (uiid > vt->max_interface_id)*/
9947 mono_mb_emit_ldloc (mb, uiid);
9948 mono_mb_emit_ldloc (mb, vtable);
9949 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoVTable, max_interface_id));
9950 mono_mb_emit_byte (mb, CEE_LDIND_U2);
9951 b2 = mono_mb_emit_branch (mb, CEE_BGT_UN);
9952
9953 /* if (!(vt->interface_bitmap [(uiid) >> 3] & (1 << ((uiid)&7)))) */
9954
9955 /*vt->interface_bitmap*/
9956 mono_mb_emit_ldloc (mb, vtable);
9957 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoVTable, interface_bitmap));
9958 mono_mb_emit_byte (mb, CEE_LDIND_I);
9959
9960 /*uiid >> 3*/
9961 mono_mb_emit_ldloc (mb, uiid);
9962 mono_mb_emit_icon (mb, 3);
9963 mono_mb_emit_byte (mb, CEE_SHR_UN);
9964
9965 /*vt->interface_bitmap [(uiid) >> 3]*/
9966 mono_mb_emit_byte (mb, CEE_ADD); /*interface_bitmap is a guint8 array*/
9967 mono_mb_emit_byte (mb, CEE_LDIND_U1);
9968
9969 /*(1 << ((uiid)&7)))*/
9970 mono_mb_emit_icon (mb, 1);
9971 mono_mb_emit_ldloc (mb, uiid);
9972 mono_mb_emit_icon (mb, 7);
9973 mono_mb_emit_byte (mb, CEE_AND);
9974 mono_mb_emit_byte (mb, CEE_SHL);
9975
9976 /*bitwise and the whole thing*/
9977 mono_mb_emit_byte (mb, CEE_AND);
9978 b3 = mono_mb_emit_branch (mb, CEE_BRFALSE);
9979
9980 /* do_store: */
9981 mono_mb_patch_branch (mb, b1);
9982 mono_mb_emit_ldloc (mb, array_slot_addr);
9983 mono_mb_emit_ldarg (mb, 2);
9984 mono_mb_emit_byte (mb, CEE_STIND_REF);
9985 mono_mb_emit_byte (mb, CEE_RET);
9986
9987 /* do_exception: */
9988 mono_mb_patch_branch (mb, b2);
9989 mono_mb_patch_branch (mb, b3);
9990 mono_mb_emit_exception (mb, "ArrayTypeMismatchException", NULL);
9991 break;
9992
9993 default:
9994 mono_mb_emit_ldarg (mb, 0);
9995 mono_mb_emit_ldarg (mb, 1);
9996 mono_mb_emit_ldarg (mb, 2);
9997 mono_mb_emit_managed_call (mb, mono_marshal_get_stelemref (), NULL);
9998 mono_mb_emit_byte (mb, CEE_RET);
9999 g_assert (0);
10000 }
10001 #endif /* DISABLE_JIT */
10002 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_VIRTUAL_STELEMREF);
10003 info->d.virtual_stelemref.kind = kind;
10004 res = mono_mb_create (mb, signature, 4, info);
10005 res->flags |= METHOD_ATTRIBUTE_VIRTUAL;
10006
10007 mono_marshal_lock ();
10008 if (!cached_methods [kind]) {
10009 cached_methods [kind] = res;
10010 mono_marshal_unlock ();
10011 } else {
10012 mono_marshal_unlock ();
10013 mono_free_method (res);
10014 }
10015
10016 mono_mb_free (mb);
10017 return cached_methods [kind];
10018 }
10019
10020 MonoMethod*
10021 mono_marshal_get_virtual_stelemref (MonoClass *array_class)
10022 {
10023 int kind;
10024
10025 g_assert (array_class->rank == 1);
10026 kind = get_virtual_stelemref_kind (array_class->element_class);
10027
10028 return get_virtual_stelemref_wrapper (kind);
10029 }
10030
10031 MonoMethod**
10032 mono_marshal_get_virtual_stelemref_wrappers (int *nwrappers)
10033 {
10034 MonoMethod **res;
10035 int i;
10036
10037 *nwrappers = STELEMREF_KIND_COUNT;
10038 res = (MonoMethod **)g_malloc0 (STELEMREF_KIND_COUNT * sizeof (MonoMethod*));
10039 for (i = 0; i < STELEMREF_KIND_COUNT; ++i)
10040 res [i] = get_virtual_stelemref_wrapper (i);
10041 return res;
10042 }
10043
10044 MonoMethod*
10045 mono_marshal_get_stelemref (void)
10046 {
10047 static MonoMethod* ret = NULL;
10048 MonoMethodSignature *sig;
10049 MonoMethodBuilder *mb;
10050 WrapperInfo *info;
10051
10052 guint32 b1, b2, b3, b4;
10053 guint32 copy_pos;
10054 int aklass, vklass;
10055 int array_slot_addr;
10056
10057 if (ret)
10058 return ret;
10059
10060 mb = mono_mb_new (mono_defaults.object_class, "stelemref", MONO_WRAPPER_STELEMREF);
10061
10062
10063 sig = mono_metadata_signature_alloc (mono_defaults.corlib, 3);
10064
10065 /* void stelemref (void* array, int idx, void* value) */
10066 sig->ret = &mono_defaults.void_class->byval_arg;
10067 sig->params [0] = &mono_defaults.object_class->byval_arg;
10068 sig->params [1] = &mono_defaults.int_class->byval_arg; /* this is a natural sized int */
10069 sig->params [2] = &mono_defaults.object_class->byval_arg;
10070
10071 #ifndef DISABLE_JIT
10072 aklass = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
10073 vklass = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
10074 array_slot_addr = mono_mb_add_local (mb, &mono_defaults.object_class->this_arg);
10075
10076 /*
10077 the method:
10078 <ldelema (bound check)>
10079 if (!value)
10080 goto store;
10081
10082 aklass = array->vtable->klass->element_class;
10083 vklass = value->vtable->klass;
10084
10085 if (vklass->idepth < aklass->idepth)
10086 goto long;
10087
10088 if (vklass->supertypes [aklass->idepth - 1] != aklass)
10089 goto long;
10090
10091 store:
10092 *array_slot_addr = value;
10093 return;
10094
10095 long:
10096 if (mono_object_isinst (value, aklass))
10097 goto store;
10098
10099 throw new ArrayTypeMismatchException ();
10100 */
10101
10102 /* ldelema (implicit bound check) */
10103 mono_mb_emit_ldarg (mb, 0);
10104 mono_mb_emit_ldarg (mb, 1);
10105 mono_mb_emit_op (mb, CEE_LDELEMA, mono_defaults.object_class);
10106 mono_mb_emit_stloc (mb, array_slot_addr);
10107
10108 /* if (!value) goto do_store */
10109 mono_mb_emit_ldarg (mb, 2);
10110 b1 = mono_mb_emit_branch (mb, CEE_BRFALSE);
10111
10112 /* aklass = array->vtable->klass->element_class */
10113 mono_mb_emit_ldarg (mb, 0);
10114 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoObject, vtable));
10115 mono_mb_emit_byte (mb, CEE_LDIND_I);
10116 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoVTable, klass));
10117 mono_mb_emit_byte (mb, CEE_LDIND_I);
10118 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoClass, element_class));
10119 mono_mb_emit_byte (mb, CEE_LDIND_I);
10120 mono_mb_emit_stloc (mb, aklass);
10121
10122 /* vklass = value->vtable->klass */
10123 mono_mb_emit_ldarg (mb, 2);
10124 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoObject, vtable));
10125 mono_mb_emit_byte (mb, CEE_LDIND_I);
10126 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoVTable, klass));
10127 mono_mb_emit_byte (mb, CEE_LDIND_I);
10128 mono_mb_emit_stloc (mb, vklass);
10129
10130 /* if (vklass->idepth < aklass->idepth) goto failue */
10131 mono_mb_emit_ldloc (mb, vklass);
10132 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoClass, idepth));
10133 mono_mb_emit_byte (mb, CEE_LDIND_U2);
10134
10135 mono_mb_emit_ldloc (mb, aklass);
10136 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoClass, idepth));
10137 mono_mb_emit_byte (mb, CEE_LDIND_U2);
10138
10139 b2 = mono_mb_emit_branch (mb, CEE_BLT_UN);
10140
10141 /* if (vklass->supertypes [aklass->idepth - 1] != aklass) goto failure */
10142 mono_mb_emit_ldloc (mb, vklass);
10143 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoClass, supertypes));
10144 mono_mb_emit_byte (mb, CEE_LDIND_I);
10145
10146 mono_mb_emit_ldloc (mb, aklass);
10147 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoClass, idepth));
10148 mono_mb_emit_byte (mb, CEE_LDIND_U2);
10149 mono_mb_emit_icon (mb, 1);
10150 mono_mb_emit_byte (mb, CEE_SUB);
10151 mono_mb_emit_icon (mb, sizeof (void*));
10152 mono_mb_emit_byte (mb, CEE_MUL);
10153 mono_mb_emit_byte (mb, CEE_ADD);
10154 mono_mb_emit_byte (mb, CEE_LDIND_I);
10155
10156 mono_mb_emit_ldloc (mb, aklass);
10157
10158 b3 = mono_mb_emit_branch (mb, CEE_BNE_UN);
10159
10160 copy_pos = mono_mb_get_label (mb);
10161 /* do_store */
10162 mono_mb_patch_branch (mb, b1);
10163 mono_mb_emit_ldloc (mb, array_slot_addr);
10164 mono_mb_emit_ldarg (mb, 2);
10165 mono_mb_emit_byte (mb, CEE_STIND_REF);
10166
10167 mono_mb_emit_byte (mb, CEE_RET);
10168
10169 /* the hard way */
10170 mono_mb_patch_branch (mb, b2);
10171 mono_mb_patch_branch (mb, b3);
10172
10173 mono_mb_emit_ldarg (mb, 2);
10174 mono_mb_emit_ldloc (mb, aklass);
10175 mono_mb_emit_icall (mb, mono_object_isinst_icall);
10176
10177 b4 = mono_mb_emit_branch (mb, CEE_BRTRUE);
10178 mono_mb_patch_addr (mb, b4, copy_pos - (b4 + 4));
10179 mono_mb_emit_exception (mb, "ArrayTypeMismatchException", NULL);
10180
10181 mono_mb_emit_byte (mb, CEE_RET);
10182 #endif
10183 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_NONE);
10184 ret = mono_mb_create (mb, sig, 4, info);
10185 mono_mb_free (mb);
10186
10187 return ret;
10188 }
10189
10190 /*
10191 * mono_marshal_get_gsharedvt_in_wrapper:
10192 *
10193 * This wrapper handles calls from normal code to gsharedvt code.
10194 */
10195 MonoMethod*
10196 mono_marshal_get_gsharedvt_in_wrapper (void)
10197 {
10198 static MonoMethod* ret = NULL;
10199 MonoMethodSignature *sig;
10200 MonoMethodBuilder *mb;
10201 WrapperInfo *info;
10202
10203 if (ret)
10204 return ret;
10205
10206 mb = mono_mb_new (mono_defaults.object_class, "gsharedvt_in", MONO_WRAPPER_UNKNOWN);
10207
10208 sig = mono_metadata_signature_alloc (mono_defaults.corlib, 0);
10209 sig->ret = &mono_defaults.void_class->byval_arg;
10210
10211 #ifndef DISABLE_JIT
10212 /*
10213 * The body is generated by the JIT, we use a wrapper instead of a trampoline so EH works.
10214 */
10215 mono_mb_emit_byte (mb, CEE_RET);
10216 #endif
10217 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_GSHAREDVT_IN);
10218 ret = mono_mb_create (mb, sig, 4, info);
10219 mono_mb_free (mb);
10220
10221 return ret;
10222 }
10223
10224 /*
10225 * mono_marshal_get_gsharedvt_out_wrapper:
10226 *
10227 * This wrapper handles calls from gsharedvt code to normal code.
10228 */
10229 MonoMethod*
10230 mono_marshal_get_gsharedvt_out_wrapper (void)
10231 {
10232 static MonoMethod* ret = NULL;
10233 MonoMethodSignature *sig;
10234 MonoMethodBuilder *mb;
10235 WrapperInfo *info;
10236
10237 if (ret)
10238 return ret;
10239
10240 mb = mono_mb_new (mono_defaults.object_class, "gsharedvt_out", MONO_WRAPPER_UNKNOWN);
10241
10242 sig = mono_metadata_signature_alloc (mono_defaults.corlib, 0);
10243 sig->ret = &mono_defaults.void_class->byval_arg;
10244
10245 #ifndef DISABLE_JIT
10246 /*
10247 * The body is generated by the JIT, we use a wrapper instead of a trampoline so EH works.
10248 */
10249 mono_mb_emit_byte (mb, CEE_RET);
10250 #endif
10251 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_GSHAREDVT_OUT);
10252 ret = mono_mb_create (mb, sig, 4, info);
10253 mono_mb_free (mb);
10254
10255 return ret;
10256 }
10257
10258 typedef struct {
10259 int rank;
10260 int elem_size;
10261 MonoMethod *method;
10262 } ArrayElemAddr;
10263
10264 /* LOCKING: vars accessed under the marshal lock */
10265 static ArrayElemAddr *elem_addr_cache = NULL;
10266 static int elem_addr_cache_size = 0;
10267 static int elem_addr_cache_next = 0;
10268
10269 /**
10270 * mono_marshal_get_array_address:
10271 * @rank: rank of the array type
10272 * @elem_size: size in bytes of an element of an array.
10273 *
10274 * Returns a MonoMethod that implements the code to get the address
10275 * of an element in a multi-dimenasional array of @rank dimensions.
10276 * The returned method takes an array as the first argument and then
10277 * @rank indexes for the @rank dimensions.
10278 * If ELEM_SIZE is 0, read the array size from the array object.
10279 */
10280 MonoMethod*
10281 mono_marshal_get_array_address (int rank, int elem_size)
10282 {
10283 MonoMethod *ret;
10284 MonoMethodBuilder *mb;
10285 MonoMethodSignature *sig;
10286 WrapperInfo *info;
10287 char *name;
10288 int i, bounds, ind, realidx;
10289 int branch_pos, *branch_positions;
10290 int cached;
10291
10292 ret = NULL;
10293 mono_marshal_lock ();
10294 for (i = 0; i < elem_addr_cache_next; ++i) {
10295 if (elem_addr_cache [i].rank == rank && elem_addr_cache [i].elem_size == elem_size) {
10296 ret = elem_addr_cache [i].method;
10297 break;
10298 }
10299 }
10300 mono_marshal_unlock ();
10301 if (ret)
10302 return ret;
10303
10304 branch_positions = g_new0 (int, rank);
10305
10306 sig = mono_metadata_signature_alloc (mono_defaults.corlib, 1 + rank);
10307
10308 /* void* address (void* array, int idx0, int idx1, int idx2, ...) */
10309 sig->ret = &mono_defaults.int_class->byval_arg;
10310 sig->params [0] = &mono_defaults.object_class->byval_arg;
10311 for (i = 0; i < rank; ++i) {
10312 sig->params [i + 1] = &mono_defaults.int32_class->byval_arg;
10313 }
10314
10315 name = g_strdup_printf ("ElementAddr_%d", elem_size);
10316 mb = mono_mb_new (mono_defaults.object_class, name, MONO_WRAPPER_MANAGED_TO_MANAGED);
10317 g_free (name);
10318
10319 #ifndef DISABLE_JIT
10320 bounds = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
10321 ind = mono_mb_add_local (mb, &mono_defaults.int32_class->byval_arg);
10322 realidx = mono_mb_add_local (mb, &mono_defaults.int32_class->byval_arg);
10323
10324 /* bounds = array->bounds; */
10325 mono_mb_emit_ldarg (mb, 0);
10326 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoArray, bounds));
10327 mono_mb_emit_byte (mb, CEE_LDIND_I);
10328 mono_mb_emit_stloc (mb, bounds);
10329
10330 /* ind is the overall element index, realidx is the partial index in a single dimension */
10331 /* ind = idx0 - bounds [0].lower_bound */
10332 mono_mb_emit_ldarg (mb, 1);
10333 mono_mb_emit_ldloc (mb, bounds);
10334 mono_mb_emit_icon (mb, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
10335 mono_mb_emit_byte (mb, CEE_ADD);
10336 mono_mb_emit_byte (mb, CEE_LDIND_I4);
10337 mono_mb_emit_byte (mb, CEE_SUB);
10338 mono_mb_emit_stloc (mb, ind);
10339 /* if (ind >= bounds [0].length) goto exeception; */
10340 mono_mb_emit_ldloc (mb, ind);
10341 mono_mb_emit_ldloc (mb, bounds);
10342 mono_mb_emit_icon (mb, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
10343 mono_mb_emit_byte (mb, CEE_ADD);
10344 mono_mb_emit_byte (mb, CEE_LDIND_I4);
10345 /* note that we use unsigned comparison */
10346 branch_pos = mono_mb_emit_branch (mb, CEE_BGE_UN);
10347
10348 /* For large ranks (> 4?) use a loop n IL later to reduce code size.
10349 * We could also decide to ignore the passed elem_size and get it
10350 * from the array object, to reduce the number of methods we generate:
10351 * the additional cost is 3 memory loads and a non-immediate mul.
10352 */
10353 for (i = 1; i < rank; ++i) {
10354 /* realidx = idxi - bounds [i].lower_bound */
10355 mono_mb_emit_ldarg (mb, 1 + i);
10356 mono_mb_emit_ldloc (mb, bounds);
10357 mono_mb_emit_icon (mb, (i * sizeof (MonoArrayBounds)) + MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
10358 mono_mb_emit_byte (mb, CEE_ADD);
10359 mono_mb_emit_byte (mb, CEE_LDIND_I4);
10360 mono_mb_emit_byte (mb, CEE_SUB);
10361 mono_mb_emit_stloc (mb, realidx);
10362 /* if (realidx >= bounds [i].length) goto exeception; */
10363 mono_mb_emit_ldloc (mb, realidx);
10364 mono_mb_emit_ldloc (mb, bounds);
10365 mono_mb_emit_icon (mb, (i * sizeof (MonoArrayBounds)) + MONO_STRUCT_OFFSET (MonoArrayBounds, length));
10366 mono_mb_emit_byte (mb, CEE_ADD);
10367 mono_mb_emit_byte (mb, CEE_LDIND_I4);
10368 branch_positions [i] = mono_mb_emit_branch (mb, CEE_BGE_UN);
10369 /* ind = ind * bounds [i].length + realidx */
10370 mono_mb_emit_ldloc (mb, ind);
10371 mono_mb_emit_ldloc (mb, bounds);
10372 mono_mb_emit_icon (mb, (i * sizeof (MonoArrayBounds)) + MONO_STRUCT_OFFSET (MonoArrayBounds, length));
10373 mono_mb_emit_byte (mb, CEE_ADD);
10374 mono_mb_emit_byte (mb, CEE_LDIND_I4);
10375 mono_mb_emit_byte (mb, CEE_MUL);
10376 mono_mb_emit_ldloc (mb, realidx);
10377 mono_mb_emit_byte (mb, CEE_ADD);
10378 mono_mb_emit_stloc (mb, ind);
10379 }
10380
10381 /* return array->vector + ind * element_size */
10382 mono_mb_emit_ldarg (mb, 0);
10383 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoArray, vector));
10384 mono_mb_emit_ldloc (mb, ind);
10385 if (elem_size) {
10386 mono_mb_emit_icon (mb, elem_size);
10387 } else {
10388 /* Load arr->vtable->klass->sizes.element_class */
10389 mono_mb_emit_ldarg (mb, 0);
10390 mono_mb_emit_byte (mb, CEE_CONV_I);
10391 mono_mb_emit_icon (mb, MONO_STRUCT_OFFSET (MonoObject, vtable));
10392 mono_mb_emit_byte (mb, CEE_ADD);
10393 mono_mb_emit_byte (mb, CEE_LDIND_I);
10394 mono_mb_emit_icon (mb, MONO_STRUCT_OFFSET (MonoVTable, klass));
10395 mono_mb_emit_byte (mb, CEE_ADD);
10396 mono_mb_emit_byte (mb, CEE_LDIND_I);
10397 /* sizes is an union, so this reads sizes.element_size */
10398 mono_mb_emit_icon (mb, MONO_STRUCT_OFFSET (MonoClass, sizes));
10399 mono_mb_emit_byte (mb, CEE_ADD);
10400 mono_mb_emit_byte (mb, CEE_LDIND_I4);
10401 }
10402 mono_mb_emit_byte (mb, CEE_MUL);
10403 mono_mb_emit_byte (mb, CEE_ADD);
10404 mono_mb_emit_byte (mb, CEE_RET);
10405
10406 /* patch the branches to get here and throw */
10407 for (i = 1; i < rank; ++i) {
10408 mono_mb_patch_branch (mb, branch_positions [i]);
10409 }
10410 mono_mb_patch_branch (mb, branch_pos);
10411 /* throw exception */
10412 mono_mb_emit_exception (mb, "IndexOutOfRangeException", NULL);
10413
10414 g_free (branch_positions);
10415 #endif /* DISABLE_JIT */
10416
10417 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_ELEMENT_ADDR);
10418 info->d.element_addr.rank = rank;
10419 info->d.element_addr.elem_size = elem_size;
10420 ret = mono_mb_create (mb, sig, 4, info);
10421 mono_mb_free (mb);
10422
10423 /* cache the result */
10424 cached = 0;
10425 mono_marshal_lock ();
10426 for (i = 0; i < elem_addr_cache_next; ++i) {
10427 if (elem_addr_cache [i].rank == rank && elem_addr_cache [i].elem_size == elem_size) {
10428 /* FIXME: free ret */
10429 ret = elem_addr_cache [i].method;
10430 cached = TRUE;
10431 break;
10432 }
10433 }
10434 if (!cached) {
10435 if (elem_addr_cache_next >= elem_addr_cache_size) {
10436 int new_size = elem_addr_cache_size + 4;
10437 ArrayElemAddr *new_array = g_new0 (ArrayElemAddr, new_size);
10438 memcpy (new_array, elem_addr_cache, elem_addr_cache_size * sizeof (ArrayElemAddr));
10439 g_free (elem_addr_cache);
10440 elem_addr_cache = new_array;
10441 elem_addr_cache_size = new_size;
10442 }
10443 elem_addr_cache [elem_addr_cache_next].rank = rank;
10444 elem_addr_cache [elem_addr_cache_next].elem_size = elem_size;
10445 elem_addr_cache [elem_addr_cache_next].method = ret;
10446 elem_addr_cache_next ++;
10447 }
10448 mono_marshal_unlock ();
10449 return ret;
10450 }
10451
10452 /*
10453 * mono_marshal_get_array_accessor_wrapper:
10454 *
10455 * Return a wrapper which just calls METHOD, which should be an Array Get/Set/Address method.
10456 */
10457 MonoMethod *
10458 mono_marshal_get_array_accessor_wrapper (MonoMethod *method)
10459 {
10460 MonoMethodSignature *sig;
10461 MonoMethodBuilder *mb;
10462 MonoMethod *res;
10463 GHashTable *cache;
10464 int i;
10465 MonoGenericContext *ctx = NULL;
10466 MonoMethod *orig_method = NULL;
10467 MonoGenericContainer *container = NULL;
10468 WrapperInfo *info;
10469
10470 /*
10471 * These wrappers are needed to avoid the JIT replacing the calls to these methods with intrinsics
10472 * inside runtime invoke wrappers, thereby making the wrappers not unshareable.
10473 * FIXME: Use generic methods.
10474 */
10475 /*
10476 * Check cache
10477 */
10478 if (ctx) {
10479 cache = NULL;
10480 g_assert_not_reached ();
10481 } else {
10482 cache = get_cache (&method->klass->image->array_accessor_cache, mono_aligned_addr_hash, NULL);
10483 if ((res = mono_marshal_find_in_cache (cache, method)))
10484 return res;
10485 }
10486
10487 sig = mono_metadata_signature_dup_full (method->klass->image, mono_method_signature (method));
10488 sig->pinvoke = 0;
10489
10490 mb = mono_mb_new (method->klass, method->name, MONO_WRAPPER_UNKNOWN);
10491
10492 #ifndef DISABLE_JIT
10493 /* Call the method */
10494 if (sig->hasthis)
10495 mono_mb_emit_ldarg (mb, 0);
10496 for (i = 0; i < sig->param_count; i++)
10497 mono_mb_emit_ldarg (mb, i + (sig->hasthis == TRUE));
10498
10499 if (ctx) {
10500 MonoError error;
10501 mono_mb_emit_managed_call (mb, mono_class_inflate_generic_method_checked (method, &container->context, &error), NULL);
10502 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
10503 } else {
10504 mono_mb_emit_managed_call (mb, method, NULL);
10505 }
10506 mono_mb_emit_byte (mb, CEE_RET);
10507 #endif
10508
10509 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_ARRAY_ACCESSOR);
10510 info->d.array_accessor.method = method;
10511
10512 if (ctx) {
10513 MonoMethod *def;
10514 def = mono_mb_create_and_cache_full (cache, method, mb, sig, sig->param_count + 16, info, NULL);
10515 res = cache_generic_wrapper (cache, orig_method, def, ctx, orig_method);
10516 } else {
10517 res = mono_mb_create_and_cache_full (cache, method,
10518 mb, sig, sig->param_count + 16,
10519 info, NULL);
10520 }
10521 mono_mb_free (mb);
10522
10523 return res;
10524 }
10525
10526 void*
10527 mono_marshal_alloc (gulong size, MonoError *error)
10528 {
10529 gpointer res;
10530
10531 mono_error_init (error);
10532
10533 #ifdef HOST_WIN32
10534 res = CoTaskMemAlloc (size);
10535 #else
10536 res = g_try_malloc ((gulong)size);
10537 if (!res)
10538 mono_error_set_out_of_memory (error, "Could not allocate %lu bytes", size);
10539 #endif
10540 return res;
10541 }
10542
10543 /* This is a JIT icall, it sets the pending exception and returns NULL on error. */
10544 static void*
10545 ves_icall_marshal_alloc (gulong size)
10546 {
10547 MonoError error;
10548 void *ret = mono_marshal_alloc (size, &error);
10549 if (!mono_error_ok (&error)) {
10550 mono_error_set_pending_exception (&error);
10551 return NULL;
10552 }
10553
10554 return ret;
10555 }
10556
10557 void
10558 mono_marshal_free (gpointer ptr)
10559 {
10560 #ifdef HOST_WIN32
10561 CoTaskMemFree (ptr);
10562 #else
10563 g_free (ptr);
10564 #endif
10565 }
10566
10567 void
10568 mono_marshal_free_array (gpointer *ptr, int size)
10569 {
10570 int i;
10571
10572 if (!ptr)
10573 return;
10574
10575 for (i = 0; i < size; i++)
10576 if (ptr [i])
10577 g_free (ptr [i]);
10578 }
10579
10580 void *
10581 mono_marshal_string_to_utf16 (MonoString *s)
10582 {
10583 return s ? mono_string_chars (s) : NULL;
10584 }
10585
10586 /* This is a JIT icall, it sets the pending exception and returns NULL on error. */
10587 static void *
10588 mono_marshal_string_to_utf16_copy (MonoString *s)
10589 {
10590 if (s == NULL) {
10591 return NULL;
10592 } else {
10593 MonoError error;
10594 gunichar2 *res = (gunichar2 *)mono_marshal_alloc ((mono_string_length (s) * 2) + 2, &error);
10595 if (!mono_error_ok (&error)) {
10596 mono_error_set_pending_exception (&error);
10597 return NULL;
10598 }
10599 memcpy (res, mono_string_chars (s), mono_string_length (s) * 2);
10600 res [mono_string_length (s)] = 0;
10601 return res;
10602 }
10603 }
10604
10605 /**
10606 * mono_marshal_set_last_error:
10607 *
10608 * This function is invoked to set the last error value from a P/Invoke call
10609 * which has SetLastError set.
10610 */
10611 void
10612 mono_marshal_set_last_error (void)
10613 {
10614 #ifdef WIN32
10615 mono_native_tls_set_value (last_error_tls_id, GINT_TO_POINTER (GetLastError ()));
10616 #else
10617 mono_native_tls_set_value (last_error_tls_id, GINT_TO_POINTER (errno));
10618 #endif
10619 }
10620
10621 static void
10622 mono_marshal_set_last_error_windows (int error)
10623 {
10624 #ifdef WIN32
10625 mono_native_tls_set_value (last_error_tls_id, GINT_TO_POINTER (error));
10626 #endif
10627 }
10628
10629 void
10630 ves_icall_System_Runtime_InteropServices_Marshal_copy_to_unmanaged (MonoArray *src, gint32 start_index,
10631 gpointer dest, gint32 length)
10632 {
10633 int element_size;
10634 void *source_addr;
10635
10636 MONO_CHECK_ARG_NULL (src,);
10637 MONO_CHECK_ARG_NULL (dest,);
10638
10639 if (src->obj.vtable->klass->rank != 1) {
10640 mono_set_pending_exception (mono_get_exception_argument ("array", "array is multi-dimensional"));
10641 return;
10642 }
10643 if (start_index < 0) {
10644 mono_set_pending_exception (mono_get_exception_argument ("startIndex", "Must be >= 0"));
10645 return;
10646 }
10647 if (length < 0) {
10648 mono_set_pending_exception (mono_get_exception_argument ("length", "Must be >= 0"));
10649 return;
10650 }
10651 if (start_index + length > mono_array_length (src)) {
10652 mono_set_pending_exception (mono_get_exception_argument ("length", "start_index + length > array length"));
10653 return;
10654 }
10655
10656 element_size = mono_array_element_size (src->obj.vtable->klass);
10657
10658 /* no references should be involved */
10659 source_addr = mono_array_addr_with_size_fast (src, element_size, start_index);
10660
10661 memcpy (dest, source_addr, length * element_size);
10662 }
10663
10664 void
10665 ves_icall_System_Runtime_InteropServices_Marshal_copy_from_unmanaged (gpointer src, gint32 start_index,
10666 MonoArray *dest, gint32 length)
10667 {
10668 int element_size;
10669 void *dest_addr;
10670
10671 MONO_CHECK_ARG_NULL (src,);
10672 MONO_CHECK_ARG_NULL (dest,);
10673
10674 if (dest->obj.vtable->klass->rank != 1) {
10675 mono_set_pending_exception (mono_get_exception_argument ("array", "array is multi-dimensional"));
10676 return;
10677 }
10678 if (start_index < 0) {
10679 mono_set_pending_exception (mono_get_exception_argument ("startIndex", "Must be >= 0"));
10680 return;
10681 }
10682 if (length < 0) {
10683 mono_set_pending_exception (mono_get_exception_argument ("length", "Must be >= 0"));
10684 return;
10685 }
10686 if (start_index + length > mono_array_length (dest)) {
10687 mono_set_pending_exception (mono_get_exception_argument ("length", "start_index + length > array length"));
10688 return;
10689 }
10690 element_size = mono_array_element_size (dest->obj.vtable->klass);
10691
10692 /* no references should be involved */
10693 dest_addr = mono_array_addr_with_size_fast (dest, element_size, start_index);
10694
10695 memcpy (dest_addr, src, length * element_size);
10696 }
10697
10698 MonoString *
10699 ves_icall_System_Runtime_InteropServices_Marshal_PtrToStringAnsi (char *ptr)
10700 {
10701 if (ptr == NULL)
10702 return NULL;
10703 else
10704 return mono_string_new (mono_domain_get (), ptr);
10705 }
10706
10707 MonoString *
10708 ves_icall_System_Runtime_InteropServices_Marshal_PtrToStringAnsi_len (char *ptr, gint32 len)
10709 {
10710 MonoError error;
10711 MonoString *result = NULL;
10712 mono_error_init (&error);
10713 if (ptr == NULL)
10714 mono_error_set_argument_null (&error, "ptr", "");
10715 else
10716 result = mono_string_new_len_checked (mono_domain_get (), ptr, len, &error);
10717 mono_error_set_pending_exception (&error);
10718 return result;
10719 }
10720
10721 MonoString *
10722 ves_icall_System_Runtime_InteropServices_Marshal_PtrToStringUni (guint16 *ptr)
10723 {
10724 MonoError error;
10725 MonoString *res = NULL;
10726 MonoDomain *domain = mono_domain_get ();
10727 int len = 0;
10728 guint16 *t = ptr;
10729
10730 if (ptr == NULL)
10731 return NULL;
10732
10733 while (*t++)
10734 len++;
10735
10736 res = mono_string_new_utf16_checked (domain, ptr, len, &error);
10737 if (!mono_error_ok (&error)) {
10738 mono_error_set_pending_exception (&error);
10739 return NULL;
10740 }
10741 return res;
10742 }
10743
10744 MonoString *
10745 ves_icall_System_Runtime_InteropServices_Marshal_PtrToStringUni_len (guint16 *ptr, gint32 len)
10746 {
10747 MonoError error;
10748 MonoString *res = NULL;
10749 MonoDomain *domain = mono_domain_get ();
10750
10751 mono_error_init (&error);
10752
10753 if (ptr == NULL) {
10754 res = NULL;
10755 mono_error_set_argument_null (&error, "ptr", "");
10756 } else {
10757 res = mono_string_new_utf16_checked (domain, ptr, len, &error);
10758 }
10759
10760 if (!mono_error_ok (&error))
10761 mono_error_set_pending_exception (&error);
10762 return res;
10763 }
10764
10765 guint32
10766 ves_icall_System_Runtime_InteropServices_Marshal_GetLastWin32Error (void)
10767 {
10768 return (GPOINTER_TO_INT (mono_native_tls_get_value (last_error_tls_id)));
10769 }
10770
10771 guint32
10772 ves_icall_System_Runtime_InteropServices_Marshal_SizeOf (MonoReflectionType *rtype)
10773 {
10774 MonoClass *klass;
10775 MonoType *type;
10776 guint32 layout;
10777
10778 MONO_CHECK_ARG_NULL (rtype, 0);
10779
10780 type = rtype->type;
10781 klass = mono_class_from_mono_type (type);
10782 if (!mono_class_init (klass)) {
10783 mono_set_pending_exception (mono_class_get_exception_for_failure (klass));
10784 return 0;
10785 }
10786
10787 layout = (klass->flags & TYPE_ATTRIBUTE_LAYOUT_MASK);
10788
10789 if (type->type == MONO_TYPE_PTR || type->type == MONO_TYPE_FNPTR) {
10790 return sizeof (gpointer);
10791 } else if (layout == TYPE_ATTRIBUTE_AUTO_LAYOUT) {
10792 gchar *msg;
10793 MonoException *exc;
10794
10795 msg = g_strdup_printf ("Type %s cannot be marshaled as an unmanaged structure.", klass->name);
10796 exc = mono_get_exception_argument ("t", msg);
10797 g_free (msg);
10798 mono_set_pending_exception (exc);
10799 return 0;
10800 }
10801
10802 return mono_class_native_size (klass, NULL);
10803 }
10804
10805 void
10806 ves_icall_System_Runtime_InteropServices_Marshal_StructureToPtr (MonoObject *obj, gpointer dst, MonoBoolean delete_old)
10807 {
10808 MonoError error;
10809 MonoMethod *method;
10810 gpointer pa [3];
10811
10812 MONO_CHECK_ARG_NULL (obj,);
10813 MONO_CHECK_ARG_NULL (dst,);
10814
10815 method = mono_marshal_get_struct_to_ptr (obj->vtable->klass);
10816
10817 pa [0] = obj;
10818 pa [1] = &dst;
10819 pa [2] = &delete_old;
10820
10821 mono_runtime_invoke_checked (method, NULL, pa, &error);
10822 if (!mono_error_ok (&error))
10823 mono_error_set_pending_exception (&error);
10824 }
10825
10826 static void
10827 ptr_to_structure (gpointer src, MonoObject *dst, MonoError *error)
10828 {
10829 MonoMethod *method;
10830 gpointer pa [2];
10831
10832 mono_error_init (error);
10833
10834 method = mono_marshal_get_ptr_to_struct (dst->vtable->klass);
10835
10836 pa [0] = &src;
10837 pa [1] = dst;
10838
10839 mono_runtime_invoke_checked (method, NULL, pa, error);
10840 }
10841
10842 void
10843 ves_icall_System_Runtime_InteropServices_Marshal_PtrToStructure (gpointer src, MonoObject *dst)
10844 {
10845 MonoType *t;
10846 MonoError error;
10847
10848 MONO_CHECK_ARG_NULL (src,);
10849 MONO_CHECK_ARG_NULL (dst,);
10850
10851 t = mono_type_get_underlying_type (mono_class_get_type (dst->vtable->klass));
10852
10853 if (t->type == MONO_TYPE_VALUETYPE) {
10854 MonoException *exc;
10855 gchar *tmp;
10856
10857 tmp = g_strdup_printf ("Destination is a boxed value type.");
10858 exc = mono_get_exception_argument ("dst", tmp);
10859 g_free (tmp);
10860
10861 mono_set_pending_exception (exc);
10862 return;
10863 }
10864
10865 ptr_to_structure (src, dst, &error);
10866 if (!mono_error_ok (&error))
10867 mono_error_set_pending_exception (&error);
10868 }
10869
10870 MonoObject *
10871 ves_icall_System_Runtime_InteropServices_Marshal_PtrToStructure_type (gpointer src, MonoReflectionType *type)
10872 {
10873 MonoError error;
10874 MonoClass *klass;
10875 MonoDomain *domain = mono_domain_get ();
10876 MonoObject *res;
10877
10878 if (src == NULL)
10879 return NULL;
10880 MONO_CHECK_ARG_NULL (type, NULL);
10881
10882 klass = mono_class_from_mono_type (type->type);
10883 if (!mono_class_init (klass)) {
10884 mono_set_pending_exception (mono_class_get_exception_for_failure (klass));
10885 return NULL;
10886 }
10887
10888 res = mono_object_new_checked (domain, klass, &error);
10889 if (!mono_error_ok (&error)) {
10890 mono_error_set_pending_exception (&error);
10891 return NULL;
10892 }
10893
10894 ptr_to_structure (src, res, &error);
10895 if (!mono_error_ok (&error)) {
10896 mono_error_set_pending_exception (&error);
10897 return NULL;
10898 }
10899
10900 return res;
10901 }
10902
10903 int
10904 ves_icall_System_Runtime_InteropServices_Marshal_OffsetOf (MonoReflectionType *type, MonoString *field_name)
10905 {
10906 MonoError error;
10907 MonoMarshalType *info;
10908 MonoClass *klass;
10909 char *fname;
10910 int match_index = -1;
10911
10912 MONO_CHECK_ARG_NULL (type, 0);
10913 MONO_CHECK_ARG_NULL (field_name, 0);
10914
10915 fname = mono_string_to_utf8_checked (field_name, &error);
10916 if (mono_error_set_pending_exception (&error))
10917 return 0;
10918 klass = mono_class_from_mono_type (type->type);
10919 if (!mono_class_init (klass)) {
10920 mono_set_pending_exception (mono_class_get_exception_for_failure (klass));
10921 return 0;
10922 }
10923
10924 while (klass && match_index == -1) {
10925 MonoClassField* field;
10926 int i = 0;
10927 gpointer iter = NULL;
10928 while ((field = mono_class_get_fields (klass, &iter))) {
10929 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
10930 continue;
10931 if (!strcmp (fname, mono_field_get_name (field))) {
10932 match_index = i;
10933 break;
10934 }
10935 i ++;
10936 }
10937
10938 if (match_index == -1)
10939 klass = klass->parent;
10940 }
10941
10942 g_free (fname);
10943
10944 if(match_index == -1) {
10945 MonoException* exc;
10946 gchar *tmp;
10947
10948 /* Get back original class instance */
10949 klass = mono_class_from_mono_type (type->type);
10950
10951 tmp = g_strdup_printf ("Field passed in is not a marshaled member of the type %s", klass->name);
10952 exc = mono_get_exception_argument ("fieldName", tmp);
10953 g_free (tmp);
10954
10955 mono_set_pending_exception ((MonoException*)exc);
10956 return 0;
10957 }
10958
10959 info = mono_marshal_load_type_info (klass);
10960 return info->fields [match_index].offset;
10961 }
10962
10963 gpointer
10964 ves_icall_System_Runtime_InteropServices_Marshal_StringToHGlobalAnsi (MonoString *string)
10965 {
10966 MonoError error;
10967 #ifdef HOST_WIN32
10968 char* tres, *ret;
10969 size_t len;
10970 tres = mono_string_to_utf8_checked (string, &error);
10971 if (mono_error_set_pending_exception (&error))
10972 return NULL;
10973 if (!tres)
10974 return tres;
10975
10976 /*
10977 * mono_string_to_utf8_checked() returns a memory area at least as large as the size of the
10978 * MonoString, even if it contains NULL characters. The copy we allocate here has to be equally
10979 * large.
10980 */
10981 len = MAX (strlen (tres) + 1, string->length);
10982 ret = ves_icall_System_Runtime_InteropServices_Marshal_AllocHGlobal (len);
10983 memcpy (ret, tres, len);
10984 g_free (tres);
10985 return ret;
10986
10987 #else
10988 char *ret = mono_string_to_utf8_checked (string, &error);
10989 mono_error_set_pending_exception (&error);
10990 return ret;
10991 #endif
10992 }
10993
10994 gpointer
10995 ves_icall_System_Runtime_InteropServices_Marshal_StringToHGlobalUni (MonoString *string)
10996 {
10997 if (string == NULL)
10998 return NULL;
10999 else {
11000 #ifdef TARGET_WIN32
11001 gunichar2 *res = ves_icall_System_Runtime_InteropServices_Marshal_AllocHGlobal
11002 ((mono_string_length (string) + 1) * 2);
11003 #else
11004 gunichar2 *res = (gunichar2 *)g_malloc ((mono_string_length (string) + 1) * 2);
11005 #endif
11006 memcpy (res, mono_string_chars (string), mono_string_length (string) * 2);
11007 res [mono_string_length (string)] = 0;
11008 return res;
11009 }
11010 }
11011
11012 static void
11013 mono_struct_delete_old (MonoClass *klass, char *ptr)
11014 {
11015 MonoMarshalType *info;
11016 int i;
11017
11018 info = mono_marshal_load_type_info (klass);
11019
11020 for (i = 0; i < info->num_fields; i++) {
11021 MonoMarshalConv conv;
11022 MonoType *ftype = info->fields [i].field->type;
11023 char *cpos;
11024
11025 if (ftype->attrs & FIELD_ATTRIBUTE_STATIC)
11026 continue;
11027
11028 mono_type_to_unmanaged (ftype, info->fields [i].mspec, TRUE,
11029 klass->unicode, &conv);
11030
11031 cpos = ptr + info->fields [i].offset;
11032
11033 switch (conv) {
11034 case MONO_MARSHAL_CONV_NONE:
11035 if (MONO_TYPE_ISSTRUCT (ftype)) {
11036 mono_struct_delete_old (ftype->data.klass, cpos);
11037 continue;
11038 }
11039 break;
11040 case MONO_MARSHAL_CONV_STR_LPWSTR:
11041 /* We assume this field points inside a MonoString */
11042 break;
11043 case MONO_MARSHAL_CONV_STR_LPTSTR:
11044 #ifdef TARGET_WIN32
11045 /* We assume this field points inside a MonoString
11046 * on Win32 */
11047 break;
11048 #endif
11049 case MONO_MARSHAL_CONV_STR_LPSTR:
11050 case MONO_MARSHAL_CONV_STR_BSTR:
11051 case MONO_MARSHAL_CONV_STR_ANSIBSTR:
11052 case MONO_MARSHAL_CONV_STR_TBSTR:
11053 mono_marshal_free (*(gpointer *)cpos);
11054 break;
11055
11056 default:
11057 continue;
11058 }
11059 }
11060 }
11061
11062 void
11063 ves_icall_System_Runtime_InteropServices_Marshal_DestroyStructure (gpointer src, MonoReflectionType *type)
11064 {
11065 MonoClass *klass;
11066
11067 MONO_CHECK_ARG_NULL (src,);
11068 MONO_CHECK_ARG_NULL (type,);
11069
11070 klass = mono_class_from_mono_type (type->type);
11071 if (!mono_class_init (klass)) {
11072 mono_set_pending_exception (mono_class_get_exception_for_failure (klass));
11073 return;
11074 }
11075
11076 mono_struct_delete_old (klass, (char *)src);
11077 }
11078
11079 void*
11080 ves_icall_System_Runtime_InteropServices_Marshal_AllocHGlobal (gpointer size)
11081 {
11082 gpointer res;
11083 size_t s = (size_t)size;
11084
11085 if (s == 0)
11086 /* This returns a valid pointer for size 0 on MS.NET */
11087 s = 4;
11088
11089 #ifdef HOST_WIN32
11090 res = GlobalAlloc (GMEM_FIXED, s);
11091 #else
11092 res = g_try_malloc (s);
11093 #endif
11094 if (!res) {
11095 mono_set_pending_exception (mono_domain_get ()->out_of_memory_ex);
11096 return NULL;
11097 }
11098
11099 return res;
11100 }
11101
11102 gpointer
11103 ves_icall_System_Runtime_InteropServices_Marshal_ReAllocHGlobal (gpointer ptr, gpointer size)
11104 {
11105 gpointer res;
11106 size_t s = (size_t)size;
11107
11108 if (ptr == NULL) {
11109 mono_set_pending_exception (mono_domain_get ()->out_of_memory_ex);
11110 return NULL;
11111 }
11112
11113 #ifdef HOST_WIN32
11114 res = GlobalReAlloc (ptr, s, GMEM_MOVEABLE);
11115 #else
11116 res = g_try_realloc (ptr, s);
11117 #endif
11118 if (!res) {
11119 mono_set_pending_exception (mono_domain_get ()->out_of_memory_ex);
11120 return NULL;
11121 }
11122
11123 return res;
11124 }
11125
11126 void
11127 ves_icall_System_Runtime_InteropServices_Marshal_FreeHGlobal (void *ptr)
11128 {
11129 #ifdef HOST_WIN32
11130 GlobalFree (ptr);
11131 #else
11132 g_free (ptr);
11133 #endif
11134 }
11135
11136 void*
11137 ves_icall_System_Runtime_InteropServices_Marshal_AllocCoTaskMem (int size)
11138 {
11139 void *res;
11140
11141 #ifdef HOST_WIN32
11142 res = CoTaskMemAlloc (size);
11143 #else
11144 if ((gulong)size == 0)
11145 /* This returns a valid pointer for size 0 on MS.NET */
11146 size = 4;
11147
11148 res = g_try_malloc ((gulong)size);
11149 #endif
11150 if (!res) {
11151 mono_set_pending_exception (mono_domain_get ()->out_of_memory_ex);
11152 return NULL;
11153 }
11154 return res;
11155 }
11156
11157 void
11158 ves_icall_System_Runtime_InteropServices_Marshal_FreeCoTaskMem (void *ptr)
11159 {
11160 #ifdef HOST_WIN32
11161 CoTaskMemFree (ptr);
11162 #else
11163 g_free (ptr);
11164 #endif
11165 }
11166
11167 gpointer
11168 ves_icall_System_Runtime_InteropServices_Marshal_ReAllocCoTaskMem (gpointer ptr, int size)
11169 {
11170 void *res;
11171
11172 #ifdef HOST_WIN32
11173 res = CoTaskMemRealloc (ptr, size);
11174 #else
11175 res = g_try_realloc (ptr, (gulong)size);
11176 #endif
11177 if (!res) {
11178 mono_set_pending_exception (mono_domain_get ()->out_of_memory_ex);
11179 return NULL;
11180 }
11181 return res;
11182 }
11183
11184 void*
11185 ves_icall_System_Runtime_InteropServices_Marshal_UnsafeAddrOfPinnedArrayElement (MonoArray *arrayobj, int index)
11186 {
11187 return mono_array_addr_with_size_fast (arrayobj, mono_array_element_size (arrayobj->obj.vtable->klass), index);
11188 }
11189
11190 MonoDelegate*
11191 ves_icall_System_Runtime_InteropServices_Marshal_GetDelegateForFunctionPointerInternal (void *ftn, MonoReflectionType *type)
11192 {
11193 MonoClass *klass = mono_type_get_class (type->type);
11194 if (!mono_class_init (klass)) {
11195 mono_set_pending_exception (mono_class_get_exception_for_failure (klass));
11196 return NULL;
11197 }
11198
11199 return mono_ftnptr_to_delegate (klass, ftn);
11200 }
11201
11202 gpointer
11203 ves_icall_System_Runtime_InteropServices_Marshal_GetFunctionPointerForDelegateInternal (MonoDelegate *delegate)
11204 {
11205 return mono_delegate_to_ftnptr (delegate);
11206 }
11207
11208 /**
11209 * mono_marshal_is_loading_type_info:
11210 *
11211 * Return whenever mono_marshal_load_type_info () is being executed for KLASS by this
11212 * thread.
11213 */
11214 static gboolean
11215 mono_marshal_is_loading_type_info (MonoClass *klass)
11216 {
11217 GSList *loads_list = (GSList *)mono_native_tls_get_value (load_type_info_tls_id);
11218
11219 return g_slist_find (loads_list, klass) != NULL;
11220 }
11221
11222 /**
11223 * mono_marshal_load_type_info:
11224 *
11225 * Initialize klass->marshal_info using information from metadata. This function can
11226 * recursively call itself, and the caller is responsible to avoid that by calling
11227 * mono_marshal_is_loading_type_info () beforehand.
11228 *
11229 * LOCKING: Acquires the loader lock.
11230 */
11231 MonoMarshalType *
11232 mono_marshal_load_type_info (MonoClass* klass)
11233 {
11234 int j, count = 0;
11235 guint32 native_size = 0, min_align = 1, packing;
11236 MonoMarshalType *info;
11237 MonoClassField* field;
11238 gpointer iter;
11239 guint32 layout;
11240 GSList *loads_list;
11241
11242 g_assert (klass != NULL);
11243
11244 if (klass->marshal_info)
11245 return klass->marshal_info;
11246
11247 if (!klass->inited)
11248 mono_class_init (klass);
11249
11250 if (klass->marshal_info)
11251 return klass->marshal_info;
11252
11253 /*
11254 * This function can recursively call itself, so we keep the list of classes which are
11255 * under initialization in a TLS list.
11256 */
11257 g_assert (!mono_marshal_is_loading_type_info (klass));
11258 loads_list = (GSList *)mono_native_tls_get_value (load_type_info_tls_id);
11259 loads_list = g_slist_prepend (loads_list, klass);
11260 mono_native_tls_set_value (load_type_info_tls_id, loads_list);
11261
11262 iter = NULL;
11263 while ((field = mono_class_get_fields (klass, &iter))) {
11264 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
11265 continue;
11266 if (mono_field_is_deleted (field))
11267 continue;
11268 count++;
11269 }
11270
11271 layout = klass->flags & TYPE_ATTRIBUTE_LAYOUT_MASK;
11272
11273 /* The mempool is protected by the loader lock */
11274 info = (MonoMarshalType *)mono_image_alloc0 (klass->image, MONO_SIZEOF_MARSHAL_TYPE + sizeof (MonoMarshalField) * count);
11275 info->num_fields = count;
11276
11277 /* Try to find a size for this type in metadata */
11278 mono_metadata_packing_from_typedef (klass->image, klass->type_token, NULL, &native_size);
11279
11280 if (klass->parent) {
11281 int parent_size = mono_class_native_size (klass->parent, NULL);
11282
11283 /* Add parent size to real size */
11284 native_size += parent_size;
11285 info->native_size = parent_size;
11286 }
11287
11288 packing = klass->packing_size ? klass->packing_size : 8;
11289 iter = NULL;
11290 j = 0;
11291 while ((field = mono_class_get_fields (klass, &iter))) {
11292 int size;
11293 guint32 align;
11294
11295 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
11296 continue;
11297
11298 if (mono_field_is_deleted (field))
11299 continue;
11300 if (field->type->attrs & FIELD_ATTRIBUTE_HAS_FIELD_MARSHAL)
11301 mono_metadata_field_info_with_mempool (klass->image, mono_metadata_token_index (mono_class_get_field_token (field)) - 1,
11302 NULL, NULL, &info->fields [j].mspec);
11303
11304 info->fields [j].field = field;
11305
11306 if ((mono_class_num_fields (klass) == 1) && (klass->instance_size == sizeof (MonoObject)) &&
11307 (strcmp (mono_field_get_name (field), "$PRIVATE$") == 0)) {
11308 /* This field is a hack inserted by MCS to empty structures */
11309 continue;
11310 }
11311
11312 switch (layout) {
11313 case TYPE_ATTRIBUTE_AUTO_LAYOUT:
11314 case TYPE_ATTRIBUTE_SEQUENTIAL_LAYOUT:
11315 size = mono_marshal_type_size (field->type, info->fields [j].mspec,
11316 &align, TRUE, klass->unicode);
11317 align = klass->packing_size ? MIN (klass->packing_size, align): align;
11318 min_align = MAX (align, min_align);
11319 info->fields [j].offset = info->native_size;
11320 info->fields [j].offset += align - 1;
11321 info->fields [j].offset &= ~(align - 1);
11322 info->native_size = info->fields [j].offset + size;
11323 break;
11324 case TYPE_ATTRIBUTE_EXPLICIT_LAYOUT:
11325 size = mono_marshal_type_size (field->type, info->fields [j].mspec,
11326 &align, TRUE, klass->unicode);
11327 min_align = MAX (align, min_align);
11328 info->fields [j].offset = field->offset - sizeof (MonoObject);
11329 info->native_size = MAX (info->native_size, info->fields [j].offset + size);
11330 break;
11331 }
11332 j++;
11333 }
11334
11335 if (layout != TYPE_ATTRIBUTE_AUTO_LAYOUT) {
11336 info->native_size = MAX (native_size, info->native_size);
11337 /*
11338 * If the provided Size is equal or larger than the calculated size, and there
11339 * was no Pack attribute, we set min_align to 1 to avoid native_size being increased
11340 */
11341 if (layout == TYPE_ATTRIBUTE_EXPLICIT_LAYOUT) {
11342 if (native_size && native_size == info->native_size && klass->packing_size == 0)
11343 min_align = 1;
11344 else
11345 min_align = MIN (min_align, packing);
11346 }
11347 }
11348
11349 if (info->native_size & (min_align - 1)) {
11350 info->native_size += min_align - 1;
11351 info->native_size &= ~(min_align - 1);
11352 }
11353
11354 info->min_align = min_align;
11355
11356 /* Update the class's blittable info, if the layouts don't match */
11357 if (info->native_size != mono_class_value_size (klass, NULL))
11358 klass->blittable = FALSE;
11359
11360 /* If this is an array type, ensure that we have element info */
11361 if (klass->rank && !mono_marshal_is_loading_type_info (klass->element_class)) {
11362 mono_marshal_load_type_info (klass->element_class);
11363 }
11364
11365 loads_list = (GSList *)mono_native_tls_get_value (load_type_info_tls_id);
11366 loads_list = g_slist_remove (loads_list, klass);
11367 mono_native_tls_set_value (load_type_info_tls_id, loads_list);
11368
11369 mono_marshal_lock ();
11370 if (!klass->marshal_info) {
11371 /*We do double-checking locking on marshal_info */
11372 mono_memory_barrier ();
11373 klass->marshal_info = info;
11374 }
11375 mono_marshal_unlock ();
11376
11377 return klass->marshal_info;
11378 }
11379
11380 /**
11381 * mono_class_native_size:
11382 * @klass: a class
11383 *
11384 * Returns: the native size of an object instance (when marshaled
11385 * to unmanaged code)
11386 */
11387 gint32
11388 mono_class_native_size (MonoClass *klass, guint32 *align)
11389 {
11390 if (!klass->marshal_info) {
11391 if (mono_marshal_is_loading_type_info (klass)) {
11392 if (align)
11393 *align = 0;
11394 return 0;
11395 } else {
11396 mono_marshal_load_type_info (klass);
11397 }
11398 }
11399
11400 if (align)
11401 *align = klass->marshal_info->min_align;
11402
11403 return klass->marshal_info->native_size;
11404 }
11405
11406 /*
11407 * mono_type_native_stack_size:
11408 * @t: the type to return the size it uses on the stack
11409 *
11410 * Returns: the number of bytes required to hold an instance of this
11411 * type on the native stack
11412 */
11413 int
11414 mono_type_native_stack_size (MonoType *t, guint32 *align)
11415 {
11416 guint32 tmp;
11417
11418 g_assert (t != NULL);
11419
11420 if (!align)
11421 align = &tmp;
11422
11423 if (t->byref) {
11424 *align = sizeof (gpointer);
11425 return sizeof (gpointer);
11426 }
11427
11428 switch (t->type){
11429 case MONO_TYPE_BOOLEAN:
11430 case MONO_TYPE_CHAR:
11431 case MONO_TYPE_I1:
11432 case MONO_TYPE_U1:
11433 case MONO_TYPE_I2:
11434 case MONO_TYPE_U2:
11435 case MONO_TYPE_I4:
11436 case MONO_TYPE_U4:
11437 *align = 4;
11438 return 4;
11439 case MONO_TYPE_I:
11440 case MONO_TYPE_U:
11441 case MONO_TYPE_STRING:
11442 case MONO_TYPE_OBJECT:
11443 case MONO_TYPE_CLASS:
11444 case MONO_TYPE_SZARRAY:
11445 case MONO_TYPE_PTR:
11446 case MONO_TYPE_FNPTR:
11447 case MONO_TYPE_ARRAY:
11448 *align = sizeof (gpointer);
11449 return sizeof (gpointer);
11450 case MONO_TYPE_R4:
11451 *align = 4;
11452 return 4;
11453 case MONO_TYPE_R8:
11454 *align = MONO_ABI_ALIGNOF (double);
11455 return 8;
11456 case MONO_TYPE_I8:
11457 case MONO_TYPE_U8:
11458 *align = MONO_ABI_ALIGNOF (gint64);
11459 return 8;
11460 case MONO_TYPE_GENERICINST:
11461 if (!mono_type_generic_inst_is_valuetype (t)) {
11462 *align = sizeof (gpointer);
11463 return sizeof (gpointer);
11464 }
11465 /* Fall through */
11466 case MONO_TYPE_TYPEDBYREF:
11467 case MONO_TYPE_VALUETYPE: {
11468 guint32 size;
11469 MonoClass *klass = mono_class_from_mono_type (t);
11470
11471 if (klass->enumtype)
11472 return mono_type_native_stack_size (mono_class_enum_basetype (klass), align);
11473 else {
11474 size = mono_class_native_size (klass, align);
11475 *align = *align + 3;
11476 *align &= ~3;
11477
11478 size += 3;
11479 size &= ~3;
11480
11481 return size;
11482 }
11483 }
11484 default:
11485 g_error ("type 0x%02x unknown", t->type);
11486 }
11487 return 0;
11488 }
11489
11490 gint32
11491 mono_marshal_type_size (MonoType *type, MonoMarshalSpec *mspec, guint32 *align,
11492 gboolean as_field, gboolean unicode)
11493 {
11494 MonoMarshalNative native_type = mono_type_to_unmanaged (type, mspec, as_field, unicode, NULL);
11495 MonoClass *klass;
11496
11497 switch (native_type) {
11498 case MONO_NATIVE_BOOLEAN:
11499 *align = 4;
11500 return 4;
11501 case MONO_NATIVE_I1:
11502 case MONO_NATIVE_U1:
11503 *align = 1;
11504 return 1;
11505 case MONO_NATIVE_I2:
11506 case MONO_NATIVE_U2:
11507 case MONO_NATIVE_VARIANTBOOL:
11508 *align = 2;
11509 return 2;
11510 case MONO_NATIVE_I4:
11511 case MONO_NATIVE_U4:
11512 case MONO_NATIVE_ERROR:
11513 *align = 4;
11514 return 4;
11515 case MONO_NATIVE_I8:
11516 case MONO_NATIVE_U8:
11517 *align = MONO_ABI_ALIGNOF (gint64);
11518 return 8;
11519 case MONO_NATIVE_R4:
11520 *align = 4;
11521 return 4;
11522 case MONO_NATIVE_R8:
11523 *align = MONO_ABI_ALIGNOF (double);
11524 return 8;
11525 case MONO_NATIVE_INT:
11526 case MONO_NATIVE_UINT:
11527 case MONO_NATIVE_LPSTR:
11528 case MONO_NATIVE_LPWSTR:
11529 case MONO_NATIVE_LPTSTR:
11530 case MONO_NATIVE_BSTR:
11531 case MONO_NATIVE_ANSIBSTR:
11532 case MONO_NATIVE_TBSTR:
11533 case MONO_NATIVE_LPARRAY:
11534 case MONO_NATIVE_SAFEARRAY:
11535 case MONO_NATIVE_IUNKNOWN:
11536 case MONO_NATIVE_IDISPATCH:
11537 case MONO_NATIVE_INTERFACE:
11538 case MONO_NATIVE_ASANY:
11539 case MONO_NATIVE_FUNC:
11540 case MONO_NATIVE_LPSTRUCT:
11541 *align = MONO_ABI_ALIGNOF (gpointer);
11542 return sizeof (gpointer);
11543 case MONO_NATIVE_STRUCT:
11544 klass = mono_class_from_mono_type (type);
11545 if (klass == mono_defaults.object_class &&
11546 (mspec && mspec->native == MONO_NATIVE_STRUCT)) {
11547 *align = 16;
11548 return 16;
11549 }
11550 return mono_class_native_size (klass, align);
11551 case MONO_NATIVE_BYVALTSTR: {
11552 int esize = unicode ? 2: 1;
11553 g_assert (mspec);
11554 *align = esize;
11555 return mspec->data.array_data.num_elem * esize;
11556 }
11557 case MONO_NATIVE_BYVALARRAY: {
11558 // FIXME: Have to consider ArraySubType
11559 int esize;
11560 klass = mono_class_from_mono_type (type);
11561 if (klass->element_class == mono_defaults.char_class) {
11562 esize = unicode ? 2 : 1;
11563 *align = esize;
11564 } else {
11565 esize = mono_class_native_size (klass->element_class, align);
11566 }
11567 g_assert (mspec);
11568 return mspec->data.array_data.num_elem * esize;
11569 }
11570 case MONO_NATIVE_CUSTOM:
11571 *align = sizeof (gpointer);
11572 return sizeof (gpointer);
11573 break;
11574 case MONO_NATIVE_CURRENCY:
11575 case MONO_NATIVE_VBBYREFSTR:
11576 default:
11577 g_error ("native type %02x not implemented", native_type);
11578 break;
11579 }
11580 g_assert_not_reached ();
11581 return 0;
11582 }
11583
11584 /* This is a JIT icall, it sets the pending exception and return NULL on error */
11585 gpointer
11586 mono_marshal_asany (MonoObject *o, MonoMarshalNative string_encoding, int param_attrs)
11587 {
11588 MonoError error;
11589 MonoType *t;
11590 MonoClass *klass;
11591
11592 if (o == NULL)
11593 return NULL;
11594
11595 t = &o->vtable->klass->byval_arg;
11596 switch (t->type) {
11597 case MONO_TYPE_I4:
11598 case MONO_TYPE_U4:
11599 case MONO_TYPE_PTR:
11600 case MONO_TYPE_I1:
11601 case MONO_TYPE_U1:
11602 case MONO_TYPE_BOOLEAN:
11603 case MONO_TYPE_I2:
11604 case MONO_TYPE_U2:
11605 case MONO_TYPE_CHAR:
11606 case MONO_TYPE_I8:
11607 case MONO_TYPE_U8:
11608 case MONO_TYPE_R4:
11609 case MONO_TYPE_R8:
11610 return mono_object_unbox (o);
11611 break;
11612 case MONO_TYPE_STRING:
11613 switch (string_encoding) {
11614 case MONO_NATIVE_LPWSTR:
11615 return mono_marshal_string_to_utf16_copy ((MonoString*)o);
11616 break;
11617 case MONO_NATIVE_LPSTR:
11618 return mono_string_to_lpstr ((MonoString*)o);
11619 break;
11620 default:
11621 g_warning ("marshaling conversion %d not implemented", string_encoding);
11622 g_assert_not_reached ();
11623 }
11624 break;
11625 case MONO_TYPE_CLASS:
11626 case MONO_TYPE_VALUETYPE: {
11627 MonoMethod *method;
11628 gpointer pa [3];
11629 gpointer res;
11630 MonoBoolean delete_old = FALSE;
11631
11632 klass = t->data.klass;
11633
11634 if ((klass->flags & TYPE_ATTRIBUTE_LAYOUT_MASK) == TYPE_ATTRIBUTE_AUTO_LAYOUT)
11635 break;
11636
11637 if (klass->valuetype && (((klass->flags & TYPE_ATTRIBUTE_LAYOUT_MASK) == TYPE_ATTRIBUTE_EXPLICIT_LAYOUT) ||
11638 klass->blittable || klass->enumtype))
11639 return mono_object_unbox (o);
11640
11641 res = mono_marshal_alloc (mono_class_native_size (klass, NULL), &error);
11642 if (!mono_error_ok (&error)) {
11643 mono_error_set_pending_exception (&error);
11644 return NULL;
11645 }
11646
11647 if (!((param_attrs & PARAM_ATTRIBUTE_OUT) && !(param_attrs & PARAM_ATTRIBUTE_IN))) {
11648 method = mono_marshal_get_struct_to_ptr (o->vtable->klass);
11649
11650 pa [0] = o;
11651 pa [1] = &res;
11652 pa [2] = &delete_old;
11653
11654 mono_runtime_invoke_checked (method, NULL, pa, &error);
11655 if (!mono_error_ok (&error)) {
11656 mono_error_set_pending_exception (&error);
11657 return NULL;
11658 }
11659 }
11660
11661 return res;
11662 }
11663 default:
11664 break;
11665 }
11666 mono_set_pending_exception (mono_get_exception_argument ("", "No PInvoke conversion exists for value passed to Object-typed parameter."));
11667 return NULL;
11668 }
11669
11670 /* This is a JIT icall, it sets the pending exception */
11671 void
11672 mono_marshal_free_asany (MonoObject *o, gpointer ptr, MonoMarshalNative string_encoding, int param_attrs)
11673 {
11674 MonoError error;
11675 MonoType *t;
11676 MonoClass *klass;
11677
11678 if (o == NULL)
11679 return;
11680
11681 t = &o->vtable->klass->byval_arg;
11682 switch (t->type) {
11683 case MONO_TYPE_STRING:
11684 switch (string_encoding) {
11685 case MONO_NATIVE_LPWSTR:
11686 case MONO_NATIVE_LPSTR:
11687 mono_marshal_free (ptr);
11688 break;
11689 default:
11690 g_warning ("marshaling conversion %d not implemented", string_encoding);
11691 g_assert_not_reached ();
11692 }
11693 break;
11694 case MONO_TYPE_CLASS:
11695 case MONO_TYPE_VALUETYPE: {
11696 klass = t->data.klass;
11697
11698 if (klass->valuetype && (((klass->flags & TYPE_ATTRIBUTE_LAYOUT_MASK) == TYPE_ATTRIBUTE_EXPLICIT_LAYOUT) ||
11699 klass->blittable || klass->enumtype))
11700 break;
11701
11702 if (param_attrs & PARAM_ATTRIBUTE_OUT) {
11703 MonoMethod *method = mono_marshal_get_ptr_to_struct (o->vtable->klass);
11704 gpointer pa [2];
11705
11706 pa [0] = &ptr;
11707 pa [1] = o;
11708
11709 mono_runtime_invoke_checked (method, NULL, pa, &error);
11710 if (!mono_error_ok (&error)) {
11711 mono_error_set_pending_exception (&error);
11712 return;
11713 }
11714 }
11715
11716 if (!((param_attrs & PARAM_ATTRIBUTE_OUT) && !(param_attrs & PARAM_ATTRIBUTE_IN))) {
11717 mono_struct_delete_old (klass, (char *)ptr);
11718 }
11719
11720 mono_marshal_free (ptr);
11721 break;
11722 }
11723 default:
11724 break;
11725 }
11726 }
11727
11728 MonoMethod *
11729 mono_marshal_get_generic_array_helper (MonoClass *klass, MonoClass *iface, gchar *name, MonoMethod *method)
11730 {
11731 MonoMethodSignature *sig, *csig;
11732 MonoMethodBuilder *mb;
11733 MonoMethod *res;
11734 WrapperInfo *info;
11735 int i;
11736
11737 mb = mono_mb_new_no_dup_name (klass, name, MONO_WRAPPER_MANAGED_TO_MANAGED);
11738 mb->method->slot = -1;
11739
11740 mb->method->flags = METHOD_ATTRIBUTE_PRIVATE | METHOD_ATTRIBUTE_VIRTUAL |
11741 METHOD_ATTRIBUTE_NEW_SLOT | METHOD_ATTRIBUTE_HIDE_BY_SIG | METHOD_ATTRIBUTE_FINAL;
11742
11743 sig = mono_method_signature (method);
11744 csig = mono_metadata_signature_dup_full (method->klass->image, sig);
11745 csig->generic_param_count = 0;
11746
11747 #ifndef DISABLE_JIT
11748 mono_mb_emit_ldarg (mb, 0);
11749 for (i = 0; i < csig->param_count; i++)
11750 mono_mb_emit_ldarg (mb, i + 1);
11751 mono_mb_emit_managed_call (mb, method, NULL);
11752 mono_mb_emit_byte (mb, CEE_RET);
11753
11754 /* We can corlib internal methods */
11755 mb->skip_visibility = TRUE;
11756 #endif
11757 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_GENERIC_ARRAY_HELPER);
11758 info->d.generic_array_helper.method = method;
11759 res = mono_mb_create (mb, csig, csig->param_count + 16, info);
11760
11761 mono_mb_free (mb);
11762
11763 return res;
11764 }
11765
11766 /*
11767 * The mono_win32_compat_* functions are implementations of inline
11768 * Windows kernel32 APIs, which are DllImport-able under MS.NET,
11769 * although not exported by kernel32.
11770 *
11771 * We map the appropiate kernel32 entries to these functions using
11772 * dllmaps declared in the global etc/mono/config.
11773 */
11774
11775 void
11776 mono_win32_compat_CopyMemory (gpointer dest, gconstpointer source, gsize length)
11777 {
11778 if (!dest || !source)
11779 return;
11780
11781 memcpy (dest, source, length);
11782 }
11783
11784 void
11785 mono_win32_compat_FillMemory (gpointer dest, gsize length, guchar fill)
11786 {
11787 memset (dest, fill, length);
11788 }
11789
11790 void
11791 mono_win32_compat_MoveMemory (gpointer dest, gconstpointer source, gsize length)
11792 {
11793 if (!dest || !source)
11794 return;
11795
11796 memmove (dest, source, length);
11797 }
11798
11799 void
11800 mono_win32_compat_ZeroMemory (gpointer dest, gsize length)
11801 {
11802 memset (dest, 0, length);
11803 }
11804
11805 void
11806 mono_marshal_find_nonzero_bit_offset (guint8 *buf, int len, int *byte_offset, guint8 *bitmask)
11807 {
11808 int i;
11809 guint8 byte;
11810
11811 for (i = 0; i < len; ++i)
11812 if (buf [i])
11813 break;
11814
11815 g_assert (i < len);
11816
11817 byte = buf [i];
11818 while (byte && !(byte & 1))
11819 byte >>= 1;
11820 g_assert (byte == 1);
11821
11822 *byte_offset = i;
11823 *bitmask = buf [i];
11824 }
11825
11826 MonoMethod *
11827 mono_marshal_get_thunk_invoke_wrapper (MonoMethod *method)
11828 {
11829 MonoMethodBuilder *mb;
11830 MonoMethodSignature *sig, *csig;
11831 MonoExceptionClause *clause;
11832 MonoImage *image;
11833 MonoClass *klass;
11834 GHashTable *cache;
11835 MonoMethod *res;
11836 int i, param_count, sig_size, pos_leave;
11837
11838 g_assert (method);
11839
11840 // FIXME: we need to store the exception into a MonoHandle
11841 g_assert (!mono_threads_is_coop_enabled ());
11842
11843 klass = method->klass;
11844 image = method->klass->image;
11845
11846 cache = get_cache (&mono_method_get_wrapper_cache (method)->thunk_invoke_cache, mono_aligned_addr_hash, NULL);
11847
11848 if ((res = mono_marshal_find_in_cache (cache, method)))
11849 return res;
11850
11851 sig = mono_method_signature (method);
11852 mb = mono_mb_new (klass, method->name, MONO_WRAPPER_NATIVE_TO_MANAGED);
11853
11854 /* add "this" and exception param */
11855 param_count = sig->param_count + sig->hasthis + 1;
11856
11857 /* dup & extend signature */
11858 csig = mono_metadata_signature_alloc (image, param_count);
11859 sig_size = MONO_SIZEOF_METHOD_SIGNATURE + sig->param_count * sizeof (MonoType *);
11860 memcpy (csig, sig, sig_size);
11861 csig->param_count = param_count;
11862 csig->hasthis = 0;
11863 csig->pinvoke = 1;
11864 csig->call_convention = MONO_CALL_DEFAULT;
11865
11866 if (sig->hasthis) {
11867 /* add "this" */
11868 csig->params [0] = &klass->byval_arg;
11869 /* move params up by one */
11870 for (i = 0; i < sig->param_count; i++)
11871 csig->params [i + 1] = sig->params [i];
11872 }
11873
11874 /* setup exception param as byref+[out] */
11875 csig->params [param_count - 1] = mono_metadata_type_dup (image,
11876 &mono_defaults.exception_class->byval_arg);
11877 csig->params [param_count - 1]->byref = 1;
11878 csig->params [param_count - 1]->attrs = PARAM_ATTRIBUTE_OUT;
11879
11880 /* convert struct return to object */
11881 if (MONO_TYPE_ISSTRUCT (sig->ret))
11882 csig->ret = &mono_defaults.object_class->byval_arg;
11883
11884 #ifndef DISABLE_JIT
11885 /* local 0 (temp for exception object) */
11886 mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
11887
11888 /* local 1 (temp for result) */
11889 if (!MONO_TYPE_IS_VOID (sig->ret))
11890 mono_mb_add_local (mb, sig->ret);
11891
11892 /* clear exception arg */
11893 mono_mb_emit_ldarg (mb, param_count - 1);
11894 mono_mb_emit_byte (mb, CEE_LDNULL);
11895 mono_mb_emit_byte (mb, CEE_STIND_REF);
11896
11897 /* try */
11898 clause = (MonoExceptionClause *)mono_image_alloc0 (image, sizeof (MonoExceptionClause));
11899 clause->try_offset = mono_mb_get_label (mb);
11900
11901 /* push method's args */
11902 for (i = 0; i < param_count - 1; i++) {
11903 MonoType *type;
11904 MonoClass *klass;
11905
11906 mono_mb_emit_ldarg (mb, i);
11907
11908 /* get the byval type of the param */
11909 klass = mono_class_from_mono_type (csig->params [i]);
11910 type = &klass->byval_arg;
11911
11912 /* unbox struct args */
11913 if (MONO_TYPE_ISSTRUCT (type)) {
11914 mono_mb_emit_op (mb, CEE_UNBOX, klass);
11915
11916 /* byref args & and the "this" arg must remain a ptr.
11917 Otherwise make a copy of the value type */
11918 if (!(csig->params [i]->byref || (i == 0 && sig->hasthis)))
11919 mono_mb_emit_op (mb, CEE_LDOBJ, klass);
11920
11921 csig->params [i] = &mono_defaults.object_class->byval_arg;
11922 }
11923 }
11924
11925 /* call */
11926 if (method->flags & METHOD_ATTRIBUTE_VIRTUAL)
11927 mono_mb_emit_op (mb, CEE_CALLVIRT, method);
11928 else
11929 mono_mb_emit_op (mb, CEE_CALL, method);
11930
11931 /* save result at local 1 */
11932 if (!MONO_TYPE_IS_VOID (sig->ret))
11933 mono_mb_emit_stloc (mb, 1);
11934
11935 pos_leave = mono_mb_emit_branch (mb, CEE_LEAVE);
11936
11937 /* catch */
11938 clause->flags = MONO_EXCEPTION_CLAUSE_NONE;
11939 clause->try_len = mono_mb_get_pos (mb) - clause->try_offset;
11940 clause->data.catch_class = mono_defaults.object_class;
11941
11942 clause->handler_offset = mono_mb_get_label (mb);
11943
11944 /* store exception at local 0 */
11945 mono_mb_emit_stloc (mb, 0);
11946 mono_mb_emit_ldarg (mb, param_count - 1);
11947 mono_mb_emit_ldloc (mb, 0);
11948 mono_mb_emit_byte (mb, CEE_STIND_REF);
11949 mono_mb_emit_branch (mb, CEE_LEAVE);
11950
11951 clause->handler_len = mono_mb_get_pos (mb) - clause->handler_offset;
11952
11953 mono_mb_set_clauses (mb, 1, clause);
11954
11955 mono_mb_patch_branch (mb, pos_leave);
11956 /* end-try */
11957
11958 if (!MONO_TYPE_IS_VOID (sig->ret)) {
11959 mono_mb_emit_ldloc (mb, 1);
11960
11961 /* box the return value */
11962 if (MONO_TYPE_ISSTRUCT (sig->ret))
11963 mono_mb_emit_op (mb, CEE_BOX, mono_class_from_mono_type (sig->ret));
11964 }
11965
11966 mono_mb_emit_byte (mb, CEE_RET);
11967 #endif
11968
11969 res = mono_mb_create_and_cache (cache, method, mb, csig, param_count + 16);
11970 mono_mb_free (mb);
11971
11972 return res;
11973 }
11974
11975 /*
11976 * mono_marshal_free_dynamic_wrappers:
11977 *
11978 * Free wrappers of the dynamic method METHOD.
11979 */
11980 void
11981 mono_marshal_free_dynamic_wrappers (MonoMethod *method)
11982 {
11983 MonoImage *image = method->klass->image;
11984
11985 g_assert (method_is_dynamic (method));
11986
11987 /* This could be called during shutdown */
11988 if (marshal_mutex_initialized)
11989 mono_marshal_lock ();
11990 /*
11991 * FIXME: We currently leak the wrappers. Freeing them would be tricky as
11992 * they could be shared with other methods ?
11993 */
11994 if (image->wrapper_caches.runtime_invoke_direct_cache)
11995 g_hash_table_remove (image->wrapper_caches.runtime_invoke_direct_cache, method);
11996 if (image->wrapper_caches.delegate_abstract_invoke_cache)
11997 g_hash_table_foreach_remove (image->wrapper_caches.delegate_abstract_invoke_cache, signature_pointer_pair_matches_pointer, method);
11998 // FIXME: Need to clear the caches in other images as well
11999 if (image->delegate_bound_static_invoke_cache)
12000 g_hash_table_remove (image->delegate_bound_static_invoke_cache, mono_method_signature (method));
12001
12002 if (marshal_mutex_initialized)
12003 mono_marshal_unlock ();
12004 }
12005
12006 static void
12007 mono_marshal_ftnptr_eh_callback (guint32 gchandle)
12008 {
12009 g_assert (ftnptr_eh_callback);
12010 ftnptr_eh_callback (gchandle);
12011 }
12012
12013 static void
12014 ftnptr_eh_callback_default (guint32 gchandle)
12015 {
12016 MonoException *exc;
12017 gpointer stackdata;
12018
12019 mono_threads_enter_gc_unsafe_region_unbalanced (&stackdata);
12020
12021 exc = (MonoException*) mono_gchandle_get_target (gchandle);
12022
12023 mono_gchandle_free (gchandle);
12024
12025 mono_raise_exception (exc);
12026 }
12027
12028 /*
12029 * mono_install_ftnptr_eh_callback:
12030 *
12031 * Install a callback that should be called when there is a managed exception
12032 * in a native-to-managed wrapper. This is mainly used by iOS to convert a
12033 * managed exception to a native exception, to properly unwind the native
12034 * stack; this native exception will then be converted back to a managed
12035 * exception in their managed-to-native wrapper.
12036 */
12037 void
12038 mono_install_ftnptr_eh_callback (MonoFtnPtrEHCallback callback)
12039 {
12040 ftnptr_eh_callback = callback;
12041 }
12042
12043 static MonoThreadInfo*
12044 mono_icall_start (HandleStackMark *stackmark, MonoError *error)
12045 {
12046 MonoThreadInfo *info = mono_thread_info_current ();
12047
12048 mono_stack_mark_init (info, stackmark);
12049 mono_error_init (error);
12050 return info;
12051 }
12052
12053 static void
12054 mono_icall_end (MonoThreadInfo *info, HandleStackMark *stackmark, MonoError *error)
12055 {
12056 mono_stack_mark_pop (info, stackmark);
12057 mono_error_set_pending_exception (error);
12058 }
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