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[runtime] Don't reset abort exception in invoke wrapper
[mono-project.git] / mono / metadata / marshal.c
blob555a96122b7aec0a200cdae2863adecc460ba02a
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/marshal-internals.h"
24 #include "metadata/method-builder.h"
25 #include "metadata/tabledefs.h"
26 #include "metadata/exception.h"
27 #include "metadata/appdomain.h"
28 #include "mono/metadata/abi-details.h"
29 #include "mono/metadata/debug-helpers.h"
30 #include "mono/metadata/threads.h"
31 #include "mono/metadata/monitor.h"
32 #include "mono/metadata/class-internals.h"
33 #include "mono/metadata/metadata-internals.h"
34 #include "mono/metadata/domain-internals.h"
35 #include "mono/metadata/gc-internals.h"
36 #include "mono/metadata/threads-types.h"
37 #include "mono/metadata/string-icalls.h"
38 #include "mono/metadata/attrdefs.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.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 /* #define DEBUG_RUNTIME_CODE */
56
57 #define OPDEF(a,b,c,d,e,f,g,h,i,j) \
58 a = i,
59
60 enum {
61 #include "mono/cil/opcode.def"
62 LAST = 0xff
63 };
64 #undef OPDEF
65
66 /*
67 * This mutex protects the various marshalling related caches in MonoImage
68 * and a few other data structures static to this file.
69 *
70 * The marshal lock is a non-recursive complex lock that sits below the domain lock in the
71 * runtime locking latice. Which means it can take simple locks suck as the image lock.
72 */
73 #define mono_marshal_lock() mono_locks_os_acquire (&marshal_mutex, MarshalLock)
74 #define mono_marshal_unlock() mono_locks_os_release (&marshal_mutex, MarshalLock)
75 static mono_mutex_t marshal_mutex;
76 static gboolean marshal_mutex_initialized;
77
78 static MonoNativeTlsKey last_error_tls_id;
79
80 static MonoNativeTlsKey load_type_info_tls_id;
81
82 static gboolean use_aot_wrappers;
83
84 static int class_marshal_info_count;
85
86 static void ftnptr_eh_callback_default (guint32 gchandle);
87
88 static MonoFtnPtrEHCallback ftnptr_eh_callback = ftnptr_eh_callback_default;
89
90 static void
91 delegate_hash_table_add (MonoDelegate *d);
92
93 static void
94 delegate_hash_table_remove (MonoDelegate *d);
95
96 static void
97 emit_struct_conv (MonoMethodBuilder *mb, MonoClass *klass, gboolean to_object);
98
99 static void
100 emit_struct_conv_full (MonoMethodBuilder *mb, MonoClass *klass, gboolean to_object, int offset_of_first_child_field, MonoMarshalNative string_encoding);
101
102 static void
103 mono_struct_delete_old (MonoClass *klass, char *ptr);
104
105 MONO_API void *
106 mono_marshal_string_to_utf16 (MonoString *s);
107
108 static void *
109 mono_marshal_string_to_utf16_copy (MonoString *s);
110
111 #ifndef HOST_WIN32
112 static gpointer
113 mono_string_to_utf8str (MonoString *string_obj);
114 #endif
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_GET_CLASS_WITH_CACHE (fixed_buffer_attribute, "System.Runtime.CompilerServices", "FixedBufferAttribute");
221 static GENERATE_TRY_GET_CLASS_WITH_CACHE (unmanaged_function_pointer_attribute, "System.Runtime.InteropServices", "UnmanagedFunctionPointerAttribute");
222 static GENERATE_TRY_GET_CLASS_WITH_CACHE (icustom_marshaler, "System.Runtime.InteropServices", "ICustomMarshaler");
223
224 /* MonoMethod pointers to SafeHandle::DangerousAddRef and ::DangerousRelease */
225 static MonoMethod *sh_dangerous_add_ref;
226 static MonoMethod *sh_dangerous_release;
227
228 static void
229 init_safe_handle ()
230 {
231 sh_dangerous_add_ref = mono_class_get_method_from_name (
232 mono_class_try_get_safehandle_class (), "DangerousAddRef", 1);
233 sh_dangerous_release = mono_class_get_method_from_name (
234 mono_class_try_get_safehandle_class (), "DangerousRelease", 0);
235 }
236
237 static void
238 register_icall (gpointer func, const char *name, const char *sigstr, gboolean no_wrapper)
239 {
240 MonoMethodSignature *sig = mono_create_icall_signature (sigstr);
241
242 mono_register_jit_icall (func, name, sig, no_wrapper);
243 }
244
245 static void
246 register_icall_no_wrapper (gpointer func, const char *name, const char *sigstr)
247 {
248 MonoMethodSignature *sig = mono_create_icall_signature (sigstr);
249
250 mono_register_jit_icall (func, name, sig, TRUE);
251 }
252
253 MonoMethodSignature*
254 mono_signature_no_pinvoke (MonoMethod *method)
255 {
256 MonoMethodSignature *sig = mono_method_signature (method);
257 if (sig->pinvoke) {
258 sig = mono_metadata_signature_dup_full (method->klass->image, sig);
259 sig->pinvoke = FALSE;
260 }
261
262 return sig;
263 }
264
265 void
266 mono_marshal_init_tls (void)
267 {
268 mono_native_tls_alloc (&last_error_tls_id, NULL);
269 mono_native_tls_alloc (&load_type_info_tls_id, NULL);
270 }
271
272 static MonoObject*
273 mono_object_isinst_icall (MonoObject *obj, MonoClass *klass)
274 {
275 MonoError error;
276 MonoObject *result = mono_object_isinst_checked (obj, klass, &error);
277 mono_error_set_pending_exception (&error);
278 return result;
279 }
280
281 static MonoString*
282 ves_icall_mono_string_from_utf16 (gunichar2 *data)
283 {
284 MonoError error;
285 MonoString *result = mono_string_from_utf16_checked (data, &error);
286 mono_error_set_pending_exception (&error);
287 return result;
288 }
289
290 static char*
291 ves_icall_mono_string_to_utf8 (MonoString *str)
292 {
293 MonoError error;
294 char *result = mono_string_to_utf8_checked (str, &error);
295 mono_error_set_pending_exception (&error);
296 return result;
297 }
298
299 void
300 mono_marshal_init (void)
301 {
302 static gboolean module_initialized = FALSE;
303
304 if (!module_initialized) {
305 module_initialized = TRUE;
306 mono_os_mutex_init_recursive (&marshal_mutex);
307 marshal_mutex_initialized = TRUE;
308
309 register_icall (ves_icall_System_Threading_Thread_ResetAbort, "ves_icall_System_Threading_Thread_ResetAbort", "void", TRUE);
310 register_icall (mono_marshal_string_to_utf16, "mono_marshal_string_to_utf16", "ptr obj", FALSE);
311 register_icall (mono_marshal_string_to_utf16_copy, "mono_marshal_string_to_utf16_copy", "ptr obj", FALSE);
312 register_icall (mono_string_to_utf16, "mono_string_to_utf16", "ptr obj", FALSE);
313 register_icall (ves_icall_mono_string_from_utf16, "ves_icall_mono_string_from_utf16", "obj ptr", FALSE);
314 register_icall (mono_string_from_byvalstr, "mono_string_from_byvalstr", "obj ptr int", FALSE);
315 register_icall (mono_string_from_byvalwstr, "mono_string_from_byvalwstr", "obj ptr int", FALSE);
316 register_icall (mono_string_new_wrapper, "mono_string_new_wrapper", "obj ptr", FALSE);
317 register_icall (mono_string_new_len_wrapper, "mono_string_new_len_wrapper", "obj ptr int", FALSE);
318 register_icall (ves_icall_mono_string_to_utf8, "ves_icall_mono_string_to_utf8", "ptr obj", FALSE);
319 register_icall (mono_string_to_utf8str, "mono_string_to_utf8str", "ptr obj", FALSE);
320 register_icall (mono_string_to_ansibstr, "mono_string_to_ansibstr", "ptr object", FALSE);
321 register_icall (mono_string_builder_to_utf8, "mono_string_builder_to_utf8", "ptr object", FALSE);
322 register_icall (mono_string_builder_to_utf16, "mono_string_builder_to_utf16", "ptr object", FALSE);
323 register_icall (mono_array_to_savearray, "mono_array_to_savearray", "ptr object", FALSE);
324 register_icall (mono_array_to_lparray, "mono_array_to_lparray", "ptr object", FALSE);
325 register_icall (mono_free_lparray, "mono_free_lparray", "void object ptr", FALSE);
326 register_icall (mono_byvalarray_to_array, "mono_byvalarray_to_array", "void object ptr ptr int32", FALSE);
327 register_icall (mono_byvalarray_to_byte_array, "mono_byvalarray_to_byte_array", "void object ptr int32", FALSE);
328 register_icall (mono_array_to_byvalarray, "mono_array_to_byvalarray", "void ptr object ptr int32", FALSE);
329 register_icall (mono_array_to_byte_byvalarray, "mono_array_to_byte_byvalarray", "void ptr object int32", FALSE);
330 register_icall (mono_delegate_to_ftnptr, "mono_delegate_to_ftnptr", "ptr object", FALSE);
331 register_icall (mono_ftnptr_to_delegate, "mono_ftnptr_to_delegate", "object ptr ptr", FALSE);
332 register_icall (mono_marshal_asany, "mono_marshal_asany", "ptr object int32 int32", FALSE);
333 register_icall (mono_marshal_free_asany, "mono_marshal_free_asany", "void object ptr int32 int32", FALSE);
334 register_icall (ves_icall_marshal_alloc, "ves_icall_marshal_alloc", "ptr int32", FALSE);
335 register_icall (mono_marshal_free, "mono_marshal_free", "void ptr", FALSE);
336 register_icall (mono_marshal_set_last_error, "mono_marshal_set_last_error", "void", FALSE);
337 register_icall (mono_marshal_set_last_error_windows, "mono_marshal_set_last_error_windows", "void int32", FALSE);
338 register_icall (mono_string_utf8_to_builder, "mono_string_utf8_to_builder", "void ptr ptr", FALSE);
339 register_icall (mono_string_utf8_to_builder2, "mono_string_utf8_to_builder2", "object ptr", FALSE);
340 register_icall (mono_string_utf16_to_builder, "mono_string_utf16_to_builder", "void ptr ptr", FALSE);
341 register_icall (mono_string_utf16_to_builder2, "mono_string_utf16_to_builder2", "object ptr", FALSE);
342 register_icall (mono_marshal_free_array, "mono_marshal_free_array", "void ptr int32", FALSE);
343 register_icall (mono_string_to_byvalstr, "mono_string_to_byvalstr", "void ptr ptr int32", FALSE);
344 register_icall (mono_string_to_byvalwstr, "mono_string_to_byvalwstr", "void ptr ptr int32", FALSE);
345 register_icall (g_free, "g_free", "void ptr", FALSE);
346 register_icall_no_wrapper (mono_object_isinst_icall, "mono_object_isinst_icall", "object object ptr");
347 register_icall (mono_struct_delete_old, "mono_struct_delete_old", "void ptr ptr", FALSE);
348 register_icall (mono_delegate_begin_invoke, "mono_delegate_begin_invoke", "object object ptr", FALSE);
349 register_icall (mono_delegate_end_invoke, "mono_delegate_end_invoke", "object object ptr", FALSE);
350 register_icall (mono_context_get, "mono_context_get", "object", FALSE);
351 register_icall (mono_context_set, "mono_context_set", "void object", FALSE);
352 register_icall (mono_gc_wbarrier_generic_nostore, "wb_generic", "void ptr", FALSE);
353 register_icall (mono_gchandle_get_target, "mono_gchandle_get_target", "object int32", TRUE);
354 register_icall (mono_gchandle_new, "mono_gchandle_new", "uint32 object bool", TRUE);
355 register_icall (mono_marshal_isinst_with_cache, "mono_marshal_isinst_with_cache", "object object ptr ptr", FALSE);
356 register_icall (mono_marshal_ftnptr_eh_callback, "mono_marshal_ftnptr_eh_callback", "void uint32", TRUE);
357 register_icall (mono_threads_enter_gc_safe_region_unbalanced, "mono_threads_enter_gc_safe_region_unbalanced", "ptr ptr", TRUE);
358 register_icall (mono_threads_exit_gc_safe_region_unbalanced, "mono_threads_exit_gc_safe_region_unbalanced", "void ptr ptr", TRUE);
359 register_icall (mono_threads_attach_coop, "mono_threads_attach_coop", "ptr ptr ptr", TRUE);
360 register_icall (mono_threads_detach_coop, "mono_threads_detach_coop", "void ptr ptr", TRUE);
361 register_icall (mono_icall_start, "mono_icall_start", "ptr ptr ptr", TRUE);
362 register_icall (mono_icall_end, "mono_icall_end", "void ptr ptr ptr", TRUE);
363 register_icall (mono_handle_new_full, "mono_handle_new_full", "ptr ptr bool", TRUE);
364
365 mono_cominterop_init ();
366 mono_remoting_init ();
367
368 mono_counters_register ("MonoClass::class_marshal_info_count count",
369 MONO_COUNTER_METADATA | MONO_COUNTER_INT, &class_marshal_info_count);
370
371 }
372 }
373
374 void
375 mono_marshal_cleanup (void)
376 {
377 mono_cominterop_cleanup ();
378
379 mono_native_tls_free (load_type_info_tls_id);
380 mono_native_tls_free (last_error_tls_id);
381 mono_os_mutex_destroy (&marshal_mutex);
382 marshal_mutex_initialized = FALSE;
383 }
384
385 void
386 mono_marshal_lock_internal (void)
387 {
388 mono_marshal_lock ();
389 }
390
391 void
392 mono_marshal_unlock_internal (void)
393 {
394 mono_marshal_unlock ();
395 }
396
397 /* This is a JIT icall, it sets the pending exception and return NULL on error */
398 gpointer
399 mono_delegate_to_ftnptr (MonoDelegate *delegate)
400 {
401 MonoError error;
402 MonoMethod *method, *wrapper;
403 MonoClass *klass;
404 uint32_t target_handle = 0;
405
406 if (!delegate)
407 return NULL;
408
409 if (delegate->delegate_trampoline)
410 return delegate->delegate_trampoline;
411
412 klass = ((MonoObject *)delegate)->vtable->klass;
413 g_assert (klass->delegate);
414
415 method = delegate->method;
416 if (delegate->method_is_virtual)
417 method = mono_object_get_virtual_method (delegate->target, method);
418
419 if (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) {
420 const char *exc_class, *exc_arg;
421 gpointer ftnptr;
422
423 ftnptr = mono_lookup_pinvoke_call (method, &exc_class, &exc_arg);
424 if (!ftnptr) {
425 g_assert (exc_class);
426 mono_set_pending_exception (mono_exception_from_name_msg (mono_defaults.corlib, "System", exc_class, exc_arg));
427 return NULL;
428 }
429 return ftnptr;
430 }
431
432 if (delegate->target) {
433 /* Produce a location which can be embedded in JITted code */
434 target_handle = mono_gchandle_new_weakref (delegate->target, FALSE);
435 }
436
437 wrapper = mono_marshal_get_managed_wrapper (method, klass, target_handle, &error);
438 if (!is_ok (&error))
439 goto fail;
440
441 delegate->delegate_trampoline = mono_compile_method_checked (wrapper, &error);
442 if (!is_ok (&error))
443 goto fail;
444
445 // Add the delegate to the delegate hash table
446 delegate_hash_table_add (delegate);
447
448 /* when the object is collected, collect the dynamic method, too */
449 mono_object_register_finalizer ((MonoObject*)delegate);
450
451 return delegate->delegate_trampoline;
452
453 fail:
454 if (target_handle != 0)
455 mono_gchandle_free (target_handle);
456 mono_error_set_pending_exception (&error);
457 return NULL;
458 }
459
460 /*
461 * this hash table maps from a delegate trampoline object to a weak reference
462 * of the delegate. As an optimizations with a non-moving GC we store the
463 * object pointer itself, otherwise we use a GC handle.
464 */
465 static GHashTable *delegate_hash_table;
466
467 static GHashTable *
468 delegate_hash_table_new (void) {
469 return g_hash_table_new (NULL, NULL);
470 }
471
472 static void
473 delegate_hash_table_remove (MonoDelegate *d)
474 {
475 guint32 gchandle = 0;
476
477 mono_marshal_lock ();
478 if (delegate_hash_table == NULL)
479 delegate_hash_table = delegate_hash_table_new ();
480 if (mono_gc_is_moving ())
481 gchandle = GPOINTER_TO_UINT (g_hash_table_lookup (delegate_hash_table, d->delegate_trampoline));
482 g_hash_table_remove (delegate_hash_table, d->delegate_trampoline);
483 mono_marshal_unlock ();
484 if (gchandle && mono_gc_is_moving ())
485 mono_gchandle_free (gchandle);
486 }
487
488 static void
489 delegate_hash_table_add (MonoDelegate *d)
490 {
491 guint32 gchandle;
492 guint32 old_gchandle;
493
494 mono_marshal_lock ();
495 if (delegate_hash_table == NULL)
496 delegate_hash_table = delegate_hash_table_new ();
497 if (mono_gc_is_moving ()) {
498 gchandle = mono_gchandle_new_weakref ((MonoObject*)d, FALSE);
499 old_gchandle = GPOINTER_TO_UINT (g_hash_table_lookup (delegate_hash_table, d->delegate_trampoline));
500 g_hash_table_insert (delegate_hash_table, d->delegate_trampoline, GUINT_TO_POINTER (gchandle));
501 if (old_gchandle)
502 mono_gchandle_free (old_gchandle);
503 } else {
504 g_hash_table_insert (delegate_hash_table, d->delegate_trampoline, d);
505 }
506 mono_marshal_unlock ();
507 }
508
509 /*
510 * mono_marshal_use_aot_wrappers:
511 *
512 * Instructs this module to use AOT compatible wrappers.
513 */
514 void
515 mono_marshal_use_aot_wrappers (gboolean use)
516 {
517 use_aot_wrappers = use;
518 }
519
520 static void
521 parse_unmanaged_function_pointer_attr (MonoClass *klass, MonoMethodPInvoke *piinfo)
522 {
523 MonoError error;
524 MonoCustomAttrInfo *cinfo;
525 MonoReflectionUnmanagedFunctionPointerAttribute *attr;
526
527 /* The attribute is only available in Net 2.0 */
528 if (mono_class_try_get_unmanaged_function_pointer_attribute_class ()) {
529 /*
530 * The pinvoke attributes are stored in a real custom attribute so we have to
531 * construct it.
532 */
533 cinfo = mono_custom_attrs_from_class_checked (klass, &error);
534 if (!mono_error_ok (&error)) {
535 g_warning ("Could not load UnmanagedFunctionPointerAttribute due to %s", mono_error_get_message (&error));
536 mono_error_cleanup (&error);
537 }
538 if (cinfo && !mono_runtime_get_no_exec ()) {
539 attr = (MonoReflectionUnmanagedFunctionPointerAttribute*)mono_custom_attrs_get_attr_checked (cinfo, mono_class_try_get_unmanaged_function_pointer_attribute_class (), &error);
540 if (attr) {
541 piinfo->piflags = (attr->call_conv << 8) | (attr->charset ? (attr->charset - 1) * 2 : 1) | attr->set_last_error;
542 } else {
543 if (!mono_error_ok (&error)) {
544 g_warning ("Could not load UnmanagedFunctionPointerAttribute due to %s", mono_error_get_message (&error));
545 mono_error_cleanup (&error);
546 }
547 }
548 if (!cinfo->cached)
549 mono_custom_attrs_free (cinfo);
550 }
551 }
552 }
553
554 /* This is a JIT icall, it sets the pending exception and returns NULL on error */
555 MonoDelegate*
556 mono_ftnptr_to_delegate (MonoClass *klass, gpointer ftn)
557 {
558 MonoError error;
559 guint32 gchandle;
560 MonoDelegate *d;
561
562 if (ftn == NULL)
563 return NULL;
564
565 mono_marshal_lock ();
566 if (delegate_hash_table == NULL)
567 delegate_hash_table = delegate_hash_table_new ();
568
569 if (mono_gc_is_moving ()) {
570 gchandle = GPOINTER_TO_UINT (g_hash_table_lookup (delegate_hash_table, ftn));
571 mono_marshal_unlock ();
572 if (gchandle)
573 d = (MonoDelegate*)mono_gchandle_get_target (gchandle);
574 else
575 d = NULL;
576 } else {
577 d = (MonoDelegate *)g_hash_table_lookup (delegate_hash_table, ftn);
578 mono_marshal_unlock ();
579 }
580 if (d == NULL) {
581 /* This is a native function, so construct a delegate for it */
582 MonoMethodSignature *sig;
583 MonoMethod *wrapper;
584 MonoMarshalSpec **mspecs;
585 MonoMethod *invoke = mono_get_delegate_invoke (klass);
586 MonoMethodPInvoke piinfo;
587 MonoObject *this_obj;
588 int i;
589
590 if (use_aot_wrappers) {
591 wrapper = mono_marshal_get_native_func_wrapper_aot (klass);
592 this_obj = mono_value_box_checked (mono_domain_get (), mono_defaults.int_class, &ftn, &error);
593 if (!is_ok (&error)) {
594 mono_error_set_pending_exception (&error);
595 return NULL;
596 }
597 } else {
598 memset (&piinfo, 0, sizeof (piinfo));
599 parse_unmanaged_function_pointer_attr (klass, &piinfo);
600
601 mspecs = g_new0 (MonoMarshalSpec*, mono_method_signature (invoke)->param_count + 1);
602 mono_method_get_marshal_info (invoke, mspecs);
603 /* Freed below so don't alloc from mempool */
604 sig = mono_metadata_signature_dup (mono_method_signature (invoke));
605 sig->hasthis = 0;
606
607 wrapper = mono_marshal_get_native_func_wrapper (klass->image, sig, &piinfo, mspecs, ftn);
608 this_obj = NULL;
609
610 for (i = mono_method_signature (invoke)->param_count; i >= 0; i--)
611 if (mspecs [i])
612 mono_metadata_free_marshal_spec (mspecs [i]);
613 g_free (mspecs);
614 g_free (sig);
615 }
616
617 d = (MonoDelegate*)mono_object_new_checked (mono_domain_get (), klass, &error);
618 if (!mono_error_ok (&error)) {
619 mono_error_set_pending_exception (&error);
620 return NULL;
621 }
622 gpointer compiled_ptr = mono_compile_method_checked (wrapper, &error);
623 if (mono_error_set_pending_exception (&error))
624 return NULL;
625 mono_delegate_ctor_with_method ((MonoObject*)d, this_obj, compiled_ptr, wrapper, &error);
626 if (mono_error_set_pending_exception (&error))
627 return NULL;
628 }
629
630 if (d->object.vtable->domain != mono_domain_get ()) {
631 mono_set_pending_exception (mono_get_exception_not_supported ("Delegates cannot be marshalled from native code into a domain other than their home domain"));
632 return NULL;
633 }
634
635 return d;
636 }
637
638 void
639 mono_delegate_free_ftnptr (MonoDelegate *delegate)
640 {
641 MonoJitInfo *ji;
642 void *ptr;
643
644 delegate_hash_table_remove (delegate);
645
646 ptr = (gpointer)InterlockedExchangePointer (&delegate->delegate_trampoline, NULL);
647
648 if (!delegate->target) {
649 /* The wrapper method is shared between delegates -> no need to free it */
650 return;
651 }
652
653 if (ptr) {
654 uint32_t gchandle;
655 void **method_data;
656 MonoMethod *method;
657
658 ji = mono_jit_info_table_find (mono_domain_get (), (char *)mono_get_addr_from_ftnptr (ptr));
659 g_assert (ji);
660
661 method = mono_jit_info_get_method (ji);
662 method_data = (void **)((MonoMethodWrapper*)method)->method_data;
663
664 /*the target gchandle is the first entry after size and the wrapper itself.*/
665 gchandle = GPOINTER_TO_UINT (method_data [2]);
666
667 if (gchandle)
668 mono_gchandle_free (gchandle);
669
670 mono_runtime_free_method (mono_object_domain (delegate), method);
671 }
672 }
673
674 /* This is a JIT icall, it sets the pending exception and returns NULL on error */
675 static MonoString *
676 mono_string_from_byvalstr (const char *data, int max_len)
677 {
678 MonoError error;
679 MonoDomain *domain = mono_domain_get ();
680 int len = 0;
681
682 if (!data)
683 return NULL;
684
685 while (len < max_len - 1 && data [len])
686 len++;
687
688 MonoString *result = mono_string_new_len_checked (domain, data, len, &error);
689 mono_error_set_pending_exception (&error);
690 return result;
691 }
692
693 /* This is a JIT icall, it sets the pending exception and return NULL on error */
694 static MonoString *
695 mono_string_from_byvalwstr (gunichar2 *data, int max_len)
696 {
697 MonoError error;
698 MonoString *res = NULL;
699 MonoDomain *domain = mono_domain_get ();
700 int len = 0;
701
702 if (!data)
703 return NULL;
704
705 while (data [len]) len++;
706
707 res = mono_string_new_utf16_checked (domain, data, MIN (len, max_len), &error);
708 if (!mono_error_ok (&error)) {
709 mono_error_set_pending_exception (&error);
710 return NULL;
711 }
712 return res;
713 }
714
715 gpointer
716 mono_array_to_savearray (MonoArray *array)
717 {
718 if (!array)
719 return NULL;
720
721 g_assert_not_reached ();
722 return NULL;
723 }
724
725 gpointer
726 mono_array_to_lparray (MonoArray *array)
727 {
728 #ifndef DISABLE_COM
729 gpointer *nativeArray = NULL;
730 int nativeArraySize = 0;
731
732 int i = 0;
733 MonoClass *klass;
734 #endif
735
736 if (!array)
737 return NULL;
738 #ifndef DISABLE_COM
739
740 klass = array->obj.vtable->klass;
741
742 switch (klass->element_class->byval_arg.type) {
743 case MONO_TYPE_VOID:
744 g_assert_not_reached ();
745 break;
746 case MONO_TYPE_CLASS:
747 nativeArraySize = array->max_length;
748 nativeArray = (void **)malloc(sizeof(gpointer) * nativeArraySize);
749 for(i = 0; i < nativeArraySize; ++i)
750 nativeArray[i] = ves_icall_System_Runtime_InteropServices_Marshal_GetIUnknownForObjectInternal(((MonoObject **)array->vector)[i]);
751 return nativeArray;
752 case MONO_TYPE_U1:
753 case MONO_TYPE_BOOLEAN:
754 case MONO_TYPE_I1:
755 case MONO_TYPE_U2:
756 case MONO_TYPE_CHAR:
757 case MONO_TYPE_I2:
758 case MONO_TYPE_I:
759 case MONO_TYPE_U:
760 case MONO_TYPE_I4:
761 case MONO_TYPE_U4:
762 case MONO_TYPE_U8:
763 case MONO_TYPE_I8:
764 case MONO_TYPE_R4:
765 case MONO_TYPE_R8:
766 case MONO_TYPE_VALUETYPE:
767 case MONO_TYPE_PTR:
768 /* nothing to do */
769 break;
770 case MONO_TYPE_GENERICINST:
771 case MONO_TYPE_OBJECT:
772 case MONO_TYPE_ARRAY:
773 case MONO_TYPE_SZARRAY:
774 case MONO_TYPE_STRING:
775 default:
776 g_warning ("type 0x%x not handled", klass->element_class->byval_arg.type);
777 g_assert_not_reached ();
778 }
779 #endif
780 return array->vector;
781 }
782
783 void
784 mono_free_lparray (MonoArray *array, gpointer* nativeArray)
785 {
786 #ifndef DISABLE_COM
787 MonoClass *klass;
788 int i = 0;
789
790 if (!array)
791 return;
792
793 if (!nativeArray)
794 return;
795 klass = array->obj.vtable->klass;
796
797 if (klass->element_class->byval_arg.type == MONO_TYPE_CLASS) {
798 for(i = 0; i < array->max_length; ++i)
799 mono_marshal_free_ccw (mono_array_get (array, MonoObject*, i));
800 g_free (nativeArray);
801 }
802 #endif
803 }
804
805 static void
806 mono_byvalarray_to_array (MonoArray *arr, gpointer native_arr, MonoClass *elclass, guint32 elnum)
807 {
808 g_assert (arr->obj.vtable->klass->element_class == mono_defaults.char_class);
809
810 if (elclass == mono_defaults.byte_class) {
811 GError *error = NULL;
812 guint16 *ut;
813 glong items_written;
814
815 ut = g_utf8_to_utf16 ((const gchar *)native_arr, elnum, NULL, &items_written, &error);
816
817 if (!error) {
818 memcpy (mono_array_addr (arr, guint16, 0), ut, items_written * sizeof (guint16));
819 g_free (ut);
820 }
821 else
822 g_error_free (error);
823 }
824 else
825 g_assert_not_reached ();
826 }
827
828 static void
829 mono_byvalarray_to_byte_array (MonoArray *arr, gpointer native_arr, guint32 elnum)
830 {
831 mono_byvalarray_to_array (arr, native_arr, mono_defaults.byte_class, elnum);
832 }
833
834 /* This is a JIT icall, it sets the pending exception and returns on error */
835 static void
836 mono_array_to_byvalarray (gpointer native_arr, MonoArray *arr, MonoClass *elclass, guint32 elnum)
837 {
838 g_assert (arr->obj.vtable->klass->element_class == mono_defaults.char_class);
839
840 if (elclass == mono_defaults.byte_class) {
841 char *as;
842 GError *error = NULL;
843
844 as = g_utf16_to_utf8 (mono_array_addr (arr, gunichar2, 0), mono_array_length (arr), NULL, NULL, &error);
845 if (error) {
846 mono_set_pending_exception (mono_get_exception_argument ("string", error->message));
847 g_error_free (error);
848 return;
849 }
850
851 memcpy (native_arr, as, MIN (strlen (as), elnum));
852 g_free (as);
853 } else {
854 g_assert_not_reached ();
855 }
856 }
857
858 static void
859 mono_array_to_byte_byvalarray (gpointer native_arr, MonoArray *arr, guint32 elnum)
860 {
861 mono_array_to_byvalarray (native_arr, arr, mono_defaults.byte_class, elnum);
862 }
863
864 static MonoStringBuilder *
865 mono_string_builder_new (int starting_string_length)
866 {
867 static MonoClass *string_builder_class;
868 static MonoMethod *sb_ctor;
869 static void *args [1];
870
871 MonoError error;
872 int initial_len = starting_string_length;
873
874 if (initial_len < 0)
875 initial_len = 0;
876
877 if (!sb_ctor) {
878 MonoMethodDesc *desc;
879 MonoMethod *m;
880
881 string_builder_class = mono_class_get_string_builder_class ();
882 g_assert (string_builder_class);
883 desc = mono_method_desc_new (":.ctor(int)", FALSE);
884 m = mono_method_desc_search_in_class (desc, string_builder_class);
885 g_assert (m);
886 mono_method_desc_free (desc);
887 mono_memory_barrier ();
888 sb_ctor = m;
889 }
890
891 // We make a new array in the _to_builder function, so this
892 // array will always be garbage collected.
893 args [0] = &initial_len;
894
895 MonoStringBuilder *sb = (MonoStringBuilder*)mono_object_new_checked (mono_domain_get (), string_builder_class, &error);
896 mono_error_assert_ok (&error);
897
898 MonoObject *exc;
899 mono_runtime_try_invoke (sb_ctor, sb, args, &exc, &error);
900 g_assert (exc == NULL);
901 mono_error_assert_ok (&error);
902
903 g_assert (sb->chunkChars->max_length >= initial_len);
904
905 return sb;
906 }
907
908 static void
909 mono_string_utf16_to_builder_copy (MonoStringBuilder *sb, gunichar2 *text, size_t string_len)
910 {
911 gunichar2 *charDst = (gunichar2 *)sb->chunkChars->vector;
912 gunichar2 *charSrc = (gunichar2 *)text;
913 memcpy (charDst, charSrc, sizeof (gunichar2) * string_len);
914
915 sb->chunkLength = string_len;
916
917 return;
918 }
919
920 MonoStringBuilder *
921 mono_string_utf16_to_builder2 (gunichar2 *text)
922 {
923 if (!text)
924 return NULL;
925
926 int len;
927 for (len = 0; text [len] != 0; ++len);
928
929 MonoStringBuilder *sb = mono_string_builder_new (len);
930 mono_string_utf16_to_builder (sb, text);
931
932 return sb;
933 }
934
935 void
936 mono_string_utf8_to_builder (MonoStringBuilder *sb, char *text)
937 {
938 if (!sb || !text)
939 return;
940
941 GError *error = NULL;
942 glong copied;
943 gunichar2* ut = g_utf8_to_utf16 (text, strlen (text), NULL, &copied, &error);
944 int capacity = mono_string_builder_capacity (sb);
945
946 if (copied > capacity)
947 copied = capacity;
948
949 if (!error) {
950 MONO_OBJECT_SETREF (sb, chunkPrevious, NULL);
951 mono_string_utf16_to_builder_copy (sb, ut, copied);
952 } else
953 g_error_free (error);
954
955 g_free (ut);
956 }
957
958 MonoStringBuilder *
959 mono_string_utf8_to_builder2 (char *text)
960 {
961 if (!text)
962 return NULL;
963
964 int len = strlen (text);
965 MonoStringBuilder *sb = mono_string_builder_new (len);
966 mono_string_utf8_to_builder (sb, text);
967
968 return sb;
969 }
970
971 void
972 mono_string_utf16_to_builder (MonoStringBuilder *sb, gunichar2 *text)
973 {
974 if (!sb || !text)
975 return;
976
977 guint32 len;
978 for (len = 0; text [len] != 0; ++len);
979
980 if (len > mono_string_builder_capacity (sb))
981 len = mono_string_builder_capacity (sb);
982
983 mono_string_utf16_to_builder_copy (sb, text, len);
984 }
985
986 /**
987 * mono_string_builder_to_utf8:
988 * @sb: the string builder
989 *
990 * Converts to utf8 the contents of the MonoStringBuilder.
991 *
992 * Returns: a utf8 string with the contents of the StringBuilder.
993 *
994 * The return value must be released with mono_marshal_free.
995 *
996 * This is a JIT icall, it sets the pending exception and returns NULL on error.
997 */
998 gchar*
999 mono_string_builder_to_utf8 (MonoStringBuilder *sb)
1000 {
1001 MonoError error;
1002 GError *gerror = NULL;
1003 glong byte_count;
1004 if (!sb)
1005 return NULL;
1006
1007 gunichar2 *str_utf16 = mono_string_builder_to_utf16 (sb);
1008
1009 guint str_len = mono_string_builder_string_length (sb);
1010
1011 gchar *tmp = g_utf16_to_utf8 (str_utf16, str_len, NULL, &byte_count, &gerror);
1012
1013 if (gerror) {
1014 g_error_free (gerror);
1015 mono_marshal_free (str_utf16);
1016 mono_set_pending_exception (mono_get_exception_execution_engine ("Failed to convert StringBuilder from utf16 to utf8"));
1017 return NULL;
1018 } else {
1019 guint len = mono_string_builder_capacity (sb) + 1;
1020 gchar *res = (gchar *)mono_marshal_alloc (MAX (byte_count+1, len * sizeof (gchar)), &error);
1021 if (!mono_error_ok (&error)) {
1022 mono_marshal_free (str_utf16);
1023 g_free (tmp);
1024 mono_error_set_pending_exception (&error);
1025 return NULL;
1026 }
1027
1028 memcpy (res, tmp, byte_count);
1029 res[byte_count] = '\0';
1030
1031 mono_marshal_free (str_utf16);
1032 g_free (tmp);
1033 return res;
1034 }
1035 }
1036
1037 /**
1038 * mono_string_builder_to_utf16:
1039 * @sb: the string builder
1040 *
1041 * Converts to utf16 the contents of the MonoStringBuilder.
1042 *
1043 * Returns: a utf16 string with the contents of the StringBuilder.
1044 *
1045 * The return value must be released with mono_marshal_free.
1046 *
1047 * This is a JIT icall, it sets the pending exception and returns NULL on error.
1048 */
1049 gunichar2*
1050 mono_string_builder_to_utf16 (MonoStringBuilder *sb)
1051 {
1052 MonoError error;
1053
1054 if (!sb)
1055 return NULL;
1056
1057 g_assert (sb->chunkChars);
1058
1059 guint len = mono_string_builder_capacity (sb);
1060
1061 if (len == 0)
1062 len = 1;
1063
1064 gunichar2 *str = (gunichar2 *)mono_marshal_alloc ((len + 1) * sizeof (gunichar2), &error);
1065 if (!mono_error_ok (&error)) {
1066 mono_error_set_pending_exception (&error);
1067 return NULL;
1068 }
1069
1070 str[len] = '\0';
1071
1072 if (len == 0)
1073 return str;
1074
1075 MonoStringBuilder* chunk = sb;
1076 do {
1077 if (chunk->chunkLength > 0) {
1078 // Check that we will not overrun our boundaries.
1079 gunichar2 *source = (gunichar2 *)chunk->chunkChars->vector;
1080
1081 if (chunk->chunkLength <= len) {
1082 memcpy (str + chunk->chunkOffset, source, chunk->chunkLength * sizeof(gunichar2));
1083 } else {
1084 g_error ("A chunk in the StringBuilder had a length longer than expected from the offset.");
1085 }
1086
1087 len -= chunk->chunkLength;
1088 }
1089 chunk = chunk->chunkPrevious;
1090 } while (chunk != NULL);
1091
1092 return str;
1093 }
1094
1095 #ifndef HOST_WIN32
1096 /* This is a JIT icall, it sets the pending exception and returns NULL on error. */
1097 static gpointer
1098 mono_string_to_utf8str (MonoString *s)
1099 {
1100 MonoError error;
1101 char *result = mono_string_to_utf8_checked (s, &error);
1102 mono_error_set_pending_exception (&error);
1103 return result;
1104 }
1105 #endif
1106
1107 gpointer
1108 mono_string_to_ansibstr (MonoString *string_obj)
1109 {
1110 g_error ("UnmanagedMarshal.BStr is not implemented.");
1111 return NULL;
1112 }
1113
1114 /**
1115 * mono_string_to_byvalstr:
1116 * @dst: Where to store the null-terminated utf8 decoded string.
1117 * @src: the MonoString to copy.
1118 * @size: the maximum number of bytes to copy.
1119 *
1120 * Copies the MonoString pointed to by @src as a utf8 string
1121 * into @dst, it copies at most @size bytes into the destination.
1122 */
1123 void
1124 mono_string_to_byvalstr (gpointer dst, MonoString *src, int size)
1125 {
1126 MonoError error;
1127 char *s;
1128 int len;
1129
1130 g_assert (dst != NULL);
1131 g_assert (size > 0);
1132
1133 memset (dst, 0, size);
1134 if (!src)
1135 return;
1136
1137 s = mono_string_to_utf8_checked (src, &error);
1138 if (mono_error_set_pending_exception (&error))
1139 return;
1140 len = MIN (size, strlen (s));
1141 if (len >= size)
1142 len--;
1143 memcpy (dst, s, len);
1144 g_free (s);
1145 }
1146
1147 /**
1148 * mono_string_to_byvalwstr:
1149 * @dst: Where to store the null-terminated utf16 decoded string.
1150 * @src: the MonoString to copy.
1151 * @size: the maximum number of wide characters to copy (each consumes 2 bytes)
1152 *
1153 * Copies the MonoString pointed to by @src as a utf16 string into
1154 * @dst, it copies at most @size bytes into the destination (including
1155 * a terminating 16-bit zero terminator).
1156 */
1157 void
1158 mono_string_to_byvalwstr (gpointer dst, MonoString *src, int size)
1159 {
1160 int len;
1161
1162 g_assert (dst != NULL);
1163 g_assert (size > 1);
1164
1165 if (!src) {
1166 memset (dst, 0, size * 2);
1167 return;
1168 }
1169
1170 len = MIN (size, (mono_string_length (src)));
1171 memcpy (dst, mono_string_chars (src), len * 2);
1172 if (size <= mono_string_length (src))
1173 len--;
1174 *((gunichar2 *) dst + len) = 0;
1175 }
1176
1177 /* this is an icall, it sets the pending exception and returns NULL on error */
1178 static MonoString*
1179 mono_string_new_len_wrapper (const char *text, guint length)
1180 {
1181 MonoError error;
1182 MonoString *result = mono_string_new_len_checked (mono_domain_get (), text, length, &error);
1183 mono_error_set_pending_exception (&error);
1184 return result;
1185 }
1186
1187 #ifndef DISABLE_JIT
1188
1189 /*
1190 * mono_mb_emit_exception_marshal_directive:
1191 *
1192 * This function assumes ownership of MSG, which should be malloc-ed.
1193 */
1194 static void
1195 mono_mb_emit_exception_marshal_directive (MonoMethodBuilder *mb, char *msg)
1196 {
1197 char *s;
1198
1199 if (!mb->dynamic) {
1200 s = mono_image_strdup (mb->method->klass->image, msg);
1201 g_free (msg);
1202 } else {
1203 s = g_strdup (msg);
1204 }
1205 mono_mb_emit_exception_full (mb, "System.Runtime.InteropServices", "MarshalDirectiveException", s);
1206 }
1207
1208 #endif /* !DISABLE_JIT */
1209
1210 guint
1211 mono_type_to_ldind (MonoType *type)
1212 {
1213 if (type->byref)
1214 return CEE_LDIND_I;
1215
1216 handle_enum:
1217 switch (type->type) {
1218 case MONO_TYPE_I1:
1219 return CEE_LDIND_I1;
1220 case MONO_TYPE_U1:
1221 case MONO_TYPE_BOOLEAN:
1222 return CEE_LDIND_U1;
1223 case MONO_TYPE_I2:
1224 return CEE_LDIND_I2;
1225 case MONO_TYPE_U2:
1226 case MONO_TYPE_CHAR:
1227 return CEE_LDIND_U2;
1228 case MONO_TYPE_I4:
1229 return CEE_LDIND_I4;
1230 case MONO_TYPE_U4:
1231 return CEE_LDIND_U4;
1232 case MONO_TYPE_I:
1233 case MONO_TYPE_U:
1234 case MONO_TYPE_PTR:
1235 case MONO_TYPE_FNPTR:
1236 return CEE_LDIND_I;
1237 case MONO_TYPE_CLASS:
1238 case MONO_TYPE_STRING:
1239 case MONO_TYPE_OBJECT:
1240 case MONO_TYPE_SZARRAY:
1241 case MONO_TYPE_ARRAY:
1242 return CEE_LDIND_REF;
1243 case MONO_TYPE_I8:
1244 case MONO_TYPE_U8:
1245 return CEE_LDIND_I8;
1246 case MONO_TYPE_R4:
1247 return CEE_LDIND_R4;
1248 case MONO_TYPE_R8:
1249 return CEE_LDIND_R8;
1250 case MONO_TYPE_VALUETYPE:
1251 if (type->data.klass->enumtype) {
1252 type = mono_class_enum_basetype (type->data.klass);
1253 goto handle_enum;
1254 }
1255 return CEE_LDOBJ;
1256 case MONO_TYPE_TYPEDBYREF:
1257 return CEE_LDOBJ;
1258 case MONO_TYPE_GENERICINST:
1259 type = &type->data.generic_class->container_class->byval_arg;
1260 goto handle_enum;
1261 default:
1262 g_error ("unknown type 0x%02x in type_to_ldind", type->type);
1263 }
1264 return -1;
1265 }
1266
1267 guint
1268 mono_type_to_stind (MonoType *type)
1269 {
1270 if (type->byref)
1271 return MONO_TYPE_IS_REFERENCE (type) ? CEE_STIND_REF : CEE_STIND_I;
1272
1273
1274 handle_enum:
1275 switch (type->type) {
1276 case MONO_TYPE_I1:
1277 case MONO_TYPE_U1:
1278 case MONO_TYPE_BOOLEAN:
1279 return CEE_STIND_I1;
1280 case MONO_TYPE_I2:
1281 case MONO_TYPE_U2:
1282 case MONO_TYPE_CHAR:
1283 return CEE_STIND_I2;
1284 case MONO_TYPE_I4:
1285 case MONO_TYPE_U4:
1286 return CEE_STIND_I4;
1287 case MONO_TYPE_I:
1288 case MONO_TYPE_U:
1289 case MONO_TYPE_PTR:
1290 case MONO_TYPE_FNPTR:
1291 return CEE_STIND_I;
1292 case MONO_TYPE_CLASS:
1293 case MONO_TYPE_STRING:
1294 case MONO_TYPE_OBJECT:
1295 case MONO_TYPE_SZARRAY:
1296 case MONO_TYPE_ARRAY:
1297 return CEE_STIND_REF;
1298 case MONO_TYPE_I8:
1299 case MONO_TYPE_U8:
1300 return CEE_STIND_I8;
1301 case MONO_TYPE_R4:
1302 return CEE_STIND_R4;
1303 case MONO_TYPE_R8:
1304 return CEE_STIND_R8;
1305 case MONO_TYPE_VALUETYPE:
1306 if (type->data.klass->enumtype) {
1307 type = mono_class_enum_basetype (type->data.klass);
1308 goto handle_enum;
1309 }
1310 return CEE_STOBJ;
1311 case MONO_TYPE_TYPEDBYREF:
1312 return CEE_STOBJ;
1313 case MONO_TYPE_GENERICINST:
1314 type = &type->data.generic_class->container_class->byval_arg;
1315 goto handle_enum;
1316 default:
1317 g_error ("unknown type 0x%02x in type_to_stind", type->type);
1318 }
1319 return -1;
1320 }
1321
1322 #ifndef DISABLE_JIT
1323
1324 static void
1325 emit_ptr_to_object_conv (MonoMethodBuilder *mb, MonoType *type, MonoMarshalConv conv, MonoMarshalSpec *mspec)
1326 {
1327 switch (conv) {
1328 case MONO_MARSHAL_CONV_BOOL_I4:
1329 mono_mb_emit_ldloc (mb, 1);
1330 mono_mb_emit_ldloc (mb, 0);
1331 mono_mb_emit_byte (mb, CEE_LDIND_I4);
1332 mono_mb_emit_byte (mb, CEE_BRFALSE_S);
1333 mono_mb_emit_byte (mb, 3);
1334 mono_mb_emit_byte (mb, CEE_LDC_I4_1);
1335 mono_mb_emit_byte (mb, CEE_BR_S);
1336 mono_mb_emit_byte (mb, 1);
1337 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
1338 mono_mb_emit_byte (mb, CEE_STIND_I1);
1339 break;
1340 case MONO_MARSHAL_CONV_BOOL_VARIANTBOOL:
1341 mono_mb_emit_ldloc (mb, 1);
1342 mono_mb_emit_ldloc (mb, 0);
1343 mono_mb_emit_byte (mb, CEE_LDIND_I2);
1344 mono_mb_emit_byte (mb, CEE_BRFALSE_S);
1345 mono_mb_emit_byte (mb, 3);
1346 mono_mb_emit_byte (mb, CEE_LDC_I4_1);
1347 mono_mb_emit_byte (mb, CEE_BR_S);
1348 mono_mb_emit_byte (mb, 1);
1349 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
1350 mono_mb_emit_byte (mb, CEE_STIND_I1);
1351 break;
1352 case MONO_MARSHAL_CONV_ARRAY_BYVALARRAY: {
1353 MonoClass *eklass = NULL;
1354 int esize;
1355
1356 if (type->type == MONO_TYPE_SZARRAY) {
1357 eklass = type->data.klass;
1358 } else {
1359 g_assert_not_reached ();
1360 }
1361
1362 esize = mono_class_native_size (eklass, NULL);
1363
1364 /* create a new array */
1365 mono_mb_emit_ldloc (mb, 1);
1366 mono_mb_emit_icon (mb, mspec->data.array_data.num_elem);
1367 mono_mb_emit_op (mb, CEE_NEWARR, eklass);
1368 mono_mb_emit_byte (mb, CEE_STIND_REF);
1369
1370 if (eklass->blittable) {
1371 /* copy the elements */
1372 mono_mb_emit_ldloc (mb, 1);
1373 mono_mb_emit_byte (mb, CEE_LDIND_I);
1374 mono_mb_emit_icon (mb, MONO_STRUCT_OFFSET (MonoArray, vector));
1375 mono_mb_emit_byte (mb, CEE_ADD);
1376 mono_mb_emit_ldloc (mb, 0);
1377 mono_mb_emit_icon (mb, mspec->data.array_data.num_elem * esize);
1378 mono_mb_emit_byte (mb, CEE_PREFIX1);
1379 mono_mb_emit_byte (mb, CEE_CPBLK);
1380 }
1381 else {
1382 int array_var, src_var, dst_var, index_var;
1383 guint32 label2, label3;
1384
1385 array_var = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
1386 src_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
1387 dst_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
1388
1389 /* set array_var */
1390 mono_mb_emit_ldloc (mb, 1);
1391 mono_mb_emit_byte (mb, CEE_LDIND_REF);
1392 mono_mb_emit_stloc (mb, array_var);
1393
1394 /* save the old src pointer */
1395 mono_mb_emit_ldloc (mb, 0);
1396 mono_mb_emit_stloc (mb, src_var);
1397 /* save the old dst pointer */
1398 mono_mb_emit_ldloc (mb, 1);
1399 mono_mb_emit_stloc (mb, dst_var);
1400
1401 /* Emit marshalling loop */
1402 index_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
1403 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
1404 mono_mb_emit_stloc (mb, index_var);
1405
1406 /* Loop header */
1407 label2 = mono_mb_get_label (mb);
1408 mono_mb_emit_ldloc (mb, index_var);
1409 mono_mb_emit_ldloc (mb, array_var);
1410 mono_mb_emit_byte (mb, CEE_LDLEN);
1411 label3 = mono_mb_emit_branch (mb, CEE_BGE);
1412
1413 /* src is already set */
1414
1415 /* Set dst */
1416 mono_mb_emit_ldloc (mb, array_var);
1417 mono_mb_emit_ldloc (mb, index_var);
1418 mono_mb_emit_op (mb, CEE_LDELEMA, eklass);
1419 mono_mb_emit_stloc (mb, 1);
1420
1421 /* Do the conversion */
1422 emit_struct_conv (mb, eklass, TRUE);
1423
1424 /* Loop footer */
1425 mono_mb_emit_add_to_local (mb, index_var, 1);
1426
1427 mono_mb_emit_branch_label (mb, CEE_BR, label2);
1428
1429 mono_mb_patch_branch (mb, label3);
1430
1431 /* restore the old src pointer */
1432 mono_mb_emit_ldloc (mb, src_var);
1433 mono_mb_emit_stloc (mb, 0);
1434 /* restore the old dst pointer */
1435 mono_mb_emit_ldloc (mb, dst_var);
1436 mono_mb_emit_stloc (mb, 1);
1437 }
1438 break;
1439 }
1440 case MONO_MARSHAL_CONV_ARRAY_BYVALCHARARRAY: {
1441 MonoClass *eclass = mono_defaults.char_class;
1442
1443 /* create a new array */
1444 mono_mb_emit_ldloc (mb, 1);
1445 mono_mb_emit_icon (mb, mspec->data.array_data.num_elem);
1446 mono_mb_emit_op (mb, CEE_NEWARR, eclass);
1447 mono_mb_emit_byte (mb, CEE_STIND_REF);
1448
1449 mono_mb_emit_ldloc (mb, 1);
1450 mono_mb_emit_byte (mb, CEE_LDIND_REF);
1451 mono_mb_emit_ldloc (mb, 0);
1452 mono_mb_emit_icon (mb, mspec->data.array_data.num_elem);
1453 mono_mb_emit_icall (mb, mono_byvalarray_to_byte_array);
1454 break;
1455 }
1456 case MONO_MARSHAL_CONV_STR_BYVALSTR:
1457 if (mspec && mspec->native == MONO_NATIVE_BYVALTSTR && mspec->data.array_data.num_elem) {
1458 mono_mb_emit_ldloc (mb, 1);
1459 mono_mb_emit_ldloc (mb, 0);
1460 mono_mb_emit_icon (mb, mspec->data.array_data.num_elem);
1461 mono_mb_emit_icall (mb, mono_string_from_byvalstr);
1462 } else {
1463 mono_mb_emit_ldloc (mb, 1);
1464 mono_mb_emit_ldloc (mb, 0);
1465 mono_mb_emit_icall (mb, mono_string_new_wrapper);
1466 }
1467 mono_mb_emit_byte (mb, CEE_STIND_REF);
1468 break;
1469 case MONO_MARSHAL_CONV_STR_BYVALWSTR:
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_byvalwstr);
1475 } else {
1476 mono_mb_emit_ldloc (mb, 1);
1477 mono_mb_emit_ldloc (mb, 0);
1478 mono_mb_emit_icall (mb, ves_icall_mono_string_from_utf16);
1479 }
1480 mono_mb_emit_byte (mb, CEE_STIND_REF);
1481 break;
1482 case MONO_MARSHAL_CONV_STR_LPTSTR:
1483 mono_mb_emit_ldloc (mb, 1);
1484 mono_mb_emit_ldloc (mb, 0);
1485 mono_mb_emit_byte (mb, CEE_LDIND_I);
1486 #ifdef TARGET_WIN32
1487 mono_mb_emit_icall (mb, ves_icall_mono_string_from_utf16);
1488 #else
1489 mono_mb_emit_icall (mb, mono_string_new_wrapper);
1490 #endif
1491 mono_mb_emit_byte (mb, CEE_STIND_REF);
1492 break;
1493
1494 // In Mono historically LPSTR was treated as a UTF8STR
1495 case MONO_MARSHAL_CONV_STR_LPSTR:
1496 case MONO_MARSHAL_CONV_STR_UTF8STR:
1497 mono_mb_emit_ldloc (mb, 1);
1498 mono_mb_emit_ldloc (mb, 0);
1499 mono_mb_emit_byte (mb, CEE_LDIND_I);
1500 mono_mb_emit_icall (mb, mono_string_new_wrapper);
1501 mono_mb_emit_byte (mb, CEE_STIND_REF);
1502 break;
1503 case MONO_MARSHAL_CONV_STR_LPWSTR:
1504 mono_mb_emit_ldloc (mb, 1);
1505 mono_mb_emit_ldloc (mb, 0);
1506 mono_mb_emit_byte (mb, CEE_LDIND_I);
1507 mono_mb_emit_icall (mb, ves_icall_mono_string_from_utf16);
1508 mono_mb_emit_byte (mb, CEE_STIND_REF);
1509 break;
1510 case MONO_MARSHAL_CONV_OBJECT_STRUCT: {
1511 MonoClass *klass = mono_class_from_mono_type (type);
1512 int src_var, dst_var;
1513
1514 src_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
1515 dst_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
1516
1517 /* *dst = new object */
1518 mono_mb_emit_ldloc (mb, 1);
1519 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
1520 mono_mb_emit_op (mb, CEE_MONO_NEWOBJ, klass);
1521 mono_mb_emit_byte (mb, CEE_STIND_REF);
1522
1523 /* save the old src pointer */
1524 mono_mb_emit_ldloc (mb, 0);
1525 mono_mb_emit_stloc (mb, src_var);
1526 /* save the old dst pointer */
1527 mono_mb_emit_ldloc (mb, 1);
1528 mono_mb_emit_stloc (mb, dst_var);
1529
1530 /* dst = pointer to newly created object data */
1531 mono_mb_emit_ldloc (mb, 1);
1532 mono_mb_emit_byte (mb, CEE_LDIND_I);
1533 mono_mb_emit_icon (mb, sizeof (MonoObject));
1534 mono_mb_emit_byte (mb, CEE_ADD);
1535 mono_mb_emit_stloc (mb, 1);
1536
1537 emit_struct_conv (mb, klass, TRUE);
1538
1539 /* restore the old src pointer */
1540 mono_mb_emit_ldloc (mb, src_var);
1541 mono_mb_emit_stloc (mb, 0);
1542 /* restore the old dst pointer */
1543 mono_mb_emit_ldloc (mb, dst_var);
1544 mono_mb_emit_stloc (mb, 1);
1545 break;
1546 }
1547 case MONO_MARSHAL_CONV_DEL_FTN: {
1548 MonoClass *klass = mono_class_from_mono_type (type);
1549
1550 mono_mb_emit_ldloc (mb, 1);
1551 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
1552 mono_mb_emit_op (mb, CEE_MONO_CLASSCONST, klass);
1553 mono_mb_emit_ldloc (mb, 0);
1554 mono_mb_emit_byte (mb, CEE_LDIND_I);
1555 mono_mb_emit_icall (mb, mono_ftnptr_to_delegate);
1556 mono_mb_emit_byte (mb, CEE_STIND_REF);
1557 break;
1558 }
1559 case MONO_MARSHAL_CONV_ARRAY_LPARRAY:
1560 g_error ("Structure field of type %s can't be marshalled as LPArray", mono_class_from_mono_type (type)->name);
1561 break;
1562
1563 #ifndef DISABLE_COM
1564 case MONO_MARSHAL_CONV_OBJECT_INTERFACE:
1565 case MONO_MARSHAL_CONV_OBJECT_IUNKNOWN:
1566 case MONO_MARSHAL_CONV_OBJECT_IDISPATCH:
1567 mono_cominterop_emit_ptr_to_object_conv (mb, type, conv, mspec);
1568 break;
1569 #endif /* DISABLE_COM */
1570
1571 case MONO_MARSHAL_CONV_SAFEHANDLE: {
1572 /*
1573 * Passing SafeHandles as ref does not allow the unmanaged code
1574 * to change the SafeHandle value. If the value is changed,
1575 * we should issue a diagnostic exception (NotSupportedException)
1576 * that informs the user that changes to handles in unmanaged code
1577 * is not supported.
1578 *
1579 * Since we currently have no access to the original
1580 * SafeHandle that was used during the marshalling,
1581 * for now we just ignore this, and ignore/discard any
1582 * changes that might have happened to the handle.
1583 */
1584 break;
1585 }
1586
1587 case MONO_MARSHAL_CONV_HANDLEREF: {
1588 /*
1589 * Passing HandleRefs in a struct that is ref()ed does not
1590 * copy the values back to the HandleRef
1591 */
1592 break;
1593 }
1594
1595 case MONO_MARSHAL_CONV_STR_BSTR:
1596 case MONO_MARSHAL_CONV_STR_ANSIBSTR:
1597 case MONO_MARSHAL_CONV_STR_TBSTR:
1598 case MONO_MARSHAL_CONV_ARRAY_SAVEARRAY:
1599 default: {
1600 char *msg = g_strdup_printf ("marshaling conversion %d not implemented", conv);
1601
1602 mono_mb_emit_exception_marshal_directive (mb, msg);
1603 break;
1604 }
1605 }
1606 }
1607
1608 static gpointer
1609 conv_to_icall (MonoMarshalConv conv, int *ind_store_type)
1610 {
1611 int dummy;
1612 if (!ind_store_type)
1613 ind_store_type = &dummy;
1614 *ind_store_type = CEE_STIND_I;
1615 switch (conv) {
1616 case MONO_MARSHAL_CONV_STR_LPWSTR:
1617 return mono_marshal_string_to_utf16;
1618 case MONO_MARSHAL_CONV_LPWSTR_STR:
1619 *ind_store_type = CEE_STIND_REF;
1620 return ves_icall_mono_string_from_utf16;
1621 case MONO_MARSHAL_CONV_LPTSTR_STR:
1622 *ind_store_type = CEE_STIND_REF;
1623 return mono_string_new_wrapper;
1624 case MONO_MARSHAL_CONV_UTF8STR_STR:
1625 case MONO_MARSHAL_CONV_LPSTR_STR:
1626 *ind_store_type = CEE_STIND_REF;
1627 return mono_string_new_wrapper;
1628 case MONO_MARSHAL_CONV_STR_LPTSTR:
1629 #ifdef TARGET_WIN32
1630 return mono_marshal_string_to_utf16;
1631 #else
1632 return mono_string_to_utf8str;
1633 #endif
1634 // In Mono historically LPSTR was treated as a UTF8STR
1635 case MONO_MARSHAL_CONV_STR_UTF8STR:
1636 case MONO_MARSHAL_CONV_STR_LPSTR:
1637 return mono_string_to_utf8str;
1638 case MONO_MARSHAL_CONV_STR_BSTR:
1639 return mono_string_to_bstr;
1640 case MONO_MARSHAL_CONV_BSTR_STR:
1641 *ind_store_type = CEE_STIND_REF;
1642 return mono_string_from_bstr_icall;
1643 case MONO_MARSHAL_CONV_STR_TBSTR:
1644 case MONO_MARSHAL_CONV_STR_ANSIBSTR:
1645 return mono_string_to_ansibstr;
1646 case MONO_MARSHAL_CONV_SB_UTF8STR:
1647 case MONO_MARSHAL_CONV_SB_LPSTR:
1648 return mono_string_builder_to_utf8;
1649 case MONO_MARSHAL_CONV_SB_LPTSTR:
1650 #ifdef TARGET_WIN32
1651 return mono_string_builder_to_utf16;
1652 #else
1653 return mono_string_builder_to_utf8;
1654 #endif
1655 case MONO_MARSHAL_CONV_SB_LPWSTR:
1656 return mono_string_builder_to_utf16;
1657 case MONO_MARSHAL_CONV_ARRAY_SAVEARRAY:
1658 return mono_array_to_savearray;
1659 case MONO_MARSHAL_CONV_ARRAY_LPARRAY:
1660 return mono_array_to_lparray;
1661 case MONO_MARSHAL_FREE_LPARRAY:
1662 return mono_free_lparray;
1663 case MONO_MARSHAL_CONV_DEL_FTN:
1664 return mono_delegate_to_ftnptr;
1665 case MONO_MARSHAL_CONV_FTN_DEL:
1666 *ind_store_type = CEE_STIND_REF;
1667 return mono_ftnptr_to_delegate;
1668 case MONO_MARSHAL_CONV_UTF8STR_SB:
1669 case MONO_MARSHAL_CONV_LPSTR_SB:
1670 *ind_store_type = CEE_STIND_REF;
1671 return mono_string_utf8_to_builder;
1672 case MONO_MARSHAL_CONV_LPTSTR_SB:
1673 *ind_store_type = CEE_STIND_REF;
1674 #ifdef TARGET_WIN32
1675 return mono_string_utf16_to_builder;
1676 #else
1677 return mono_string_utf8_to_builder;
1678 #endif
1679 case MONO_MARSHAL_CONV_LPWSTR_SB:
1680 *ind_store_type = CEE_STIND_REF;
1681 return mono_string_utf16_to_builder;
1682 case MONO_MARSHAL_FREE_ARRAY:
1683 return mono_marshal_free_array;
1684 case MONO_MARSHAL_CONV_STR_BYVALSTR:
1685 return mono_string_to_byvalstr;
1686 case MONO_MARSHAL_CONV_STR_BYVALWSTR:
1687 return mono_string_to_byvalwstr;
1688 default:
1689 g_assert_not_reached ();
1690 }
1691
1692 return NULL;
1693 }
1694
1695 static void
1696 emit_object_to_ptr_conv (MonoMethodBuilder *mb, MonoType *type, MonoMarshalConv conv, MonoMarshalSpec *mspec)
1697 {
1698 int pos;
1699 int stind_op;
1700
1701 switch (conv) {
1702 case MONO_MARSHAL_CONV_BOOL_I4:
1703 mono_mb_emit_ldloc (mb, 1);
1704 mono_mb_emit_ldloc (mb, 0);
1705 mono_mb_emit_byte (mb, CEE_LDIND_U1);
1706 mono_mb_emit_byte (mb, CEE_STIND_I4);
1707 break;
1708 case MONO_MARSHAL_CONV_BOOL_VARIANTBOOL:
1709 mono_mb_emit_ldloc (mb, 1);
1710 mono_mb_emit_ldloc (mb, 0);
1711 mono_mb_emit_byte (mb, CEE_LDIND_U1);
1712 mono_mb_emit_byte (mb, CEE_NEG);
1713 mono_mb_emit_byte (mb, CEE_STIND_I2);
1714 break;
1715 // In Mono historically LPSTR was treated as a UTF8STR
1716 case MONO_MARSHAL_CONV_STR_UTF8STR:
1717 case MONO_MARSHAL_CONV_STR_LPWSTR:
1718 case MONO_MARSHAL_CONV_STR_LPSTR:
1719 case MONO_MARSHAL_CONV_STR_LPTSTR:
1720 case MONO_MARSHAL_CONV_STR_BSTR:
1721 case MONO_MARSHAL_CONV_STR_ANSIBSTR:
1722 case MONO_MARSHAL_CONV_STR_TBSTR: {
1723 int pos;
1724
1725 /* free space if free == true */
1726 mono_mb_emit_ldloc (mb, 2);
1727 pos = mono_mb_emit_short_branch (mb, CEE_BRFALSE_S);
1728 mono_mb_emit_ldloc (mb, 1);
1729 mono_mb_emit_byte (mb, CEE_LDIND_I);
1730 mono_mb_emit_icall (mb, g_free);
1731 mono_mb_patch_short_branch (mb, pos);
1732
1733 mono_mb_emit_ldloc (mb, 1);
1734 mono_mb_emit_ldloc (mb, 0);
1735 mono_mb_emit_byte (mb, CEE_LDIND_REF);
1736 mono_mb_emit_icall (mb, conv_to_icall (conv, &stind_op));
1737 mono_mb_emit_byte (mb, stind_op);
1738 break;
1739 }
1740 case MONO_MARSHAL_CONV_ARRAY_SAVEARRAY:
1741 case MONO_MARSHAL_CONV_ARRAY_LPARRAY:
1742 case MONO_MARSHAL_CONV_DEL_FTN:
1743 mono_mb_emit_ldloc (mb, 1);
1744 mono_mb_emit_ldloc (mb, 0);
1745 mono_mb_emit_byte (mb, CEE_LDIND_REF);
1746 mono_mb_emit_icall (mb, conv_to_icall (conv, &stind_op));
1747 mono_mb_emit_byte (mb, stind_op);
1748 break;
1749 case MONO_MARSHAL_CONV_STR_BYVALSTR:
1750 case MONO_MARSHAL_CONV_STR_BYVALWSTR: {
1751 g_assert (mspec);
1752
1753 mono_mb_emit_ldloc (mb, 1); /* dst */
1754 mono_mb_emit_ldloc (mb, 0);
1755 mono_mb_emit_byte (mb, CEE_LDIND_REF); /* src String */
1756 mono_mb_emit_icon (mb, mspec->data.array_data.num_elem);
1757 mono_mb_emit_icall (mb, conv_to_icall (conv, NULL));
1758 break;
1759 }
1760 case MONO_MARSHAL_CONV_ARRAY_BYVALARRAY: {
1761 MonoClass *eklass = NULL;
1762 int esize;
1763
1764 if (type->type == MONO_TYPE_SZARRAY) {
1765 eklass = type->data.klass;
1766 } else {
1767 g_assert_not_reached ();
1768 }
1769
1770 if (eklass->valuetype)
1771 esize = mono_class_native_size (eklass, NULL);
1772 else
1773 esize = sizeof (gpointer);
1774
1775 mono_mb_emit_ldloc (mb, 0);
1776 mono_mb_emit_byte (mb, CEE_LDIND_REF);
1777 pos = mono_mb_emit_branch (mb, CEE_BRFALSE);
1778
1779 if (eklass->blittable) {
1780 mono_mb_emit_ldloc (mb, 1);
1781 mono_mb_emit_ldloc (mb, 0);
1782 mono_mb_emit_byte (mb, CEE_LDIND_REF);
1783 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoArray, vector));
1784 mono_mb_emit_icon (mb, mspec->data.array_data.num_elem * esize);
1785 mono_mb_emit_byte (mb, CEE_PREFIX1);
1786 mono_mb_emit_byte (mb, CEE_CPBLK);
1787 } else {
1788 int array_var, src_var, dst_var, index_var;
1789 guint32 label2, label3;
1790
1791 array_var = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
1792 src_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
1793 dst_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
1794
1795 /* set array_var */
1796 mono_mb_emit_ldloc (mb, 0);
1797 mono_mb_emit_byte (mb, CEE_LDIND_REF);
1798 mono_mb_emit_stloc (mb, array_var);
1799
1800 /* save the old src pointer */
1801 mono_mb_emit_ldloc (mb, 0);
1802 mono_mb_emit_stloc (mb, src_var);
1803 /* save the old dst pointer */
1804 mono_mb_emit_ldloc (mb, 1);
1805 mono_mb_emit_stloc (mb, dst_var);
1806
1807 /* Emit marshalling loop */
1808 index_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
1809 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
1810 mono_mb_emit_stloc (mb, index_var);
1811
1812 /* Loop header */
1813 label2 = mono_mb_get_label (mb);
1814 mono_mb_emit_ldloc (mb, index_var);
1815 mono_mb_emit_ldloc (mb, array_var);
1816 mono_mb_emit_byte (mb, CEE_LDLEN);
1817 label3 = mono_mb_emit_branch (mb, CEE_BGE);
1818
1819 /* Set src */
1820 mono_mb_emit_ldloc (mb, array_var);
1821 mono_mb_emit_ldloc (mb, index_var);
1822 mono_mb_emit_op (mb, CEE_LDELEMA, eklass);
1823 mono_mb_emit_stloc (mb, 0);
1824
1825 /* dst is already set */
1826
1827 /* Do the conversion */
1828 emit_struct_conv (mb, eklass, FALSE);
1829
1830 /* Loop footer */
1831 mono_mb_emit_add_to_local (mb, index_var, 1);
1832
1833 mono_mb_emit_branch_label (mb, CEE_BR, label2);
1834
1835 mono_mb_patch_branch (mb, label3);
1836
1837 /* restore the old src pointer */
1838 mono_mb_emit_ldloc (mb, src_var);
1839 mono_mb_emit_stloc (mb, 0);
1840 /* restore the old dst pointer */
1841 mono_mb_emit_ldloc (mb, dst_var);
1842 mono_mb_emit_stloc (mb, 1);
1843 }
1844
1845 mono_mb_patch_branch (mb, pos);
1846 break;
1847 }
1848 case MONO_MARSHAL_CONV_ARRAY_BYVALCHARARRAY: {
1849 mono_mb_emit_ldloc (mb, 0);
1850 mono_mb_emit_byte (mb, CEE_LDIND_REF);
1851 pos = mono_mb_emit_short_branch (mb, CEE_BRFALSE_S);
1852
1853 mono_mb_emit_ldloc (mb, 1);
1854 mono_mb_emit_ldloc (mb, 0);
1855 mono_mb_emit_byte (mb, CEE_LDIND_REF);
1856 mono_mb_emit_icon (mb, mspec->data.array_data.num_elem);
1857 mono_mb_emit_icall (mb, mono_array_to_byte_byvalarray);
1858 mono_mb_patch_short_branch (mb, pos);
1859 break;
1860 }
1861 case MONO_MARSHAL_CONV_OBJECT_STRUCT: {
1862 int src_var, dst_var;
1863
1864 src_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
1865 dst_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
1866
1867 mono_mb_emit_ldloc (mb, 0);
1868 mono_mb_emit_byte (mb, CEE_LDIND_I);
1869 pos = mono_mb_emit_branch (mb, CEE_BRFALSE);
1870
1871 /* save the old src pointer */
1872 mono_mb_emit_ldloc (mb, 0);
1873 mono_mb_emit_stloc (mb, src_var);
1874 /* save the old dst pointer */
1875 mono_mb_emit_ldloc (mb, 1);
1876 mono_mb_emit_stloc (mb, dst_var);
1877
1878 /* src = pointer to object data */
1879 mono_mb_emit_ldloc (mb, 0);
1880 mono_mb_emit_byte (mb, CEE_LDIND_I);
1881 mono_mb_emit_icon (mb, sizeof (MonoObject));
1882 mono_mb_emit_byte (mb, CEE_ADD);
1883 mono_mb_emit_stloc (mb, 0);
1884
1885 emit_struct_conv (mb, mono_class_from_mono_type (type), FALSE);
1886
1887 /* restore the old src pointer */
1888 mono_mb_emit_ldloc (mb, src_var);
1889 mono_mb_emit_stloc (mb, 0);
1890 /* restore the old dst pointer */
1891 mono_mb_emit_ldloc (mb, dst_var);
1892 mono_mb_emit_stloc (mb, 1);
1893
1894 mono_mb_patch_branch (mb, pos);
1895 break;
1896 }
1897
1898 #ifndef DISABLE_COM
1899 case MONO_MARSHAL_CONV_OBJECT_INTERFACE:
1900 case MONO_MARSHAL_CONV_OBJECT_IDISPATCH:
1901 case MONO_MARSHAL_CONV_OBJECT_IUNKNOWN:
1902 mono_cominterop_emit_object_to_ptr_conv (mb, type, conv, mspec);
1903 break;
1904 #endif /* DISABLE_COM */
1905
1906 case MONO_MARSHAL_CONV_SAFEHANDLE: {
1907 int pos;
1908
1909 mono_mb_emit_ldloc (mb, 0);
1910 mono_mb_emit_byte (mb, CEE_LDIND_I);
1911 pos = mono_mb_emit_branch (mb, CEE_BRTRUE);
1912 mono_mb_emit_exception (mb, "ArgumentNullException", NULL);
1913 mono_mb_patch_branch (mb, pos);
1914
1915 /* Pull the handle field from SafeHandle */
1916 mono_mb_emit_ldloc (mb, 1);
1917 mono_mb_emit_ldloc (mb, 0);
1918 mono_mb_emit_byte (mb, CEE_LDIND_I);
1919 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoSafeHandle, handle));
1920 mono_mb_emit_byte (mb, CEE_LDIND_I);
1921 mono_mb_emit_byte (mb, CEE_STIND_I);
1922 break;
1923 }
1924
1925 case MONO_MARSHAL_CONV_HANDLEREF: {
1926 mono_mb_emit_ldloc (mb, 1);
1927 mono_mb_emit_ldloc (mb, 0);
1928 mono_mb_emit_icon (mb, MONO_STRUCT_OFFSET (MonoHandleRef, handle));
1929 mono_mb_emit_byte (mb, CEE_ADD);
1930 mono_mb_emit_byte (mb, CEE_LDIND_I);
1931 mono_mb_emit_byte (mb, CEE_STIND_I);
1932 break;
1933 }
1934
1935 default: {
1936 g_error ("marshalling conversion %d not implemented", conv);
1937 }
1938 }
1939 }
1940
1941 static int
1942 offset_of_first_nonstatic_field (MonoClass *klass)
1943 {
1944 int i;
1945 int fcount = mono_class_get_field_count (klass);
1946 mono_class_setup_fields (klass);
1947 for (i = 0; i < fcount; 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 gboolean
1956 get_fixed_buffer_attr (MonoClassField *field, MonoType **out_etype, int *out_len)
1957 {
1958 MonoError error;
1959 MonoCustomAttrInfo *cinfo;
1960 MonoCustomAttrEntry *attr;
1961 int aindex;
1962
1963 cinfo = mono_custom_attrs_from_field_checked (field->parent, field, &error);
1964 if (!is_ok (&error))
1965 return FALSE;
1966 attr = NULL;
1967 if (cinfo) {
1968 for (aindex = 0; aindex < cinfo->num_attrs; ++aindex) {
1969 MonoClass *ctor_class = cinfo->attrs [aindex].ctor->klass;
1970 if (mono_class_has_parent (ctor_class, mono_class_get_fixed_buffer_attribute_class ())) {
1971 attr = &cinfo->attrs [aindex];
1972 break;
1973 }
1974 }
1975 }
1976 if (attr) {
1977 MonoArray *typed_args, *named_args;
1978 CattrNamedArg *arginfo;
1979 MonoObject *o;
1980
1981 mono_reflection_create_custom_attr_data_args (mono_defaults.corlib, attr->ctor, attr->data, attr->data_size, &typed_args, &named_args, &arginfo, &error);
1982 if (!is_ok (&error))
1983 return FALSE;
1984 g_assert (mono_array_length (typed_args) == 2);
1985
1986 /* typed args */
1987 o = mono_array_get (typed_args, MonoObject*, 0);
1988 *out_etype = monotype_cast (o)->type;
1989 o = mono_array_get (typed_args, MonoObject*, 1);
1990 g_assert (o->vtable->klass == mono_defaults.int32_class);
1991 *out_len = *(gint32*)mono_object_unbox (o);
1992 g_free (arginfo);
1993 }
1994 if (cinfo && !cinfo->cached)
1995 mono_custom_attrs_free (cinfo);
1996 return attr != NULL;
1997 }
1998
1999 static void
2000 emit_fixed_buf_conv (MonoMethodBuilder *mb, MonoType *type, MonoType *etype, int len, gboolean to_object, int *out_usize)
2001 {
2002 MonoClass *klass = mono_class_from_mono_type (type);
2003 MonoClass *eklass = mono_class_from_mono_type (etype);
2004 int esize;
2005
2006 esize = mono_class_native_size (eklass, NULL);
2007
2008 MonoMarshalNative string_encoding = klass->unicode ? MONO_NATIVE_LPWSTR : MONO_NATIVE_LPSTR;
2009 int usize = mono_class_value_size (eklass, NULL);
2010 int msize = mono_class_value_size (eklass, NULL);
2011
2012 //printf ("FIXED: %s %d %d\n", mono_type_full_name (type), eklass->blittable, string_encoding);
2013
2014 if (eklass->blittable) {
2015 /* copy the elements */
2016 mono_mb_emit_ldloc (mb, 1);
2017 mono_mb_emit_ldloc (mb, 0);
2018 mono_mb_emit_icon (mb, len * esize);
2019 mono_mb_emit_byte (mb, CEE_PREFIX1);
2020 mono_mb_emit_byte (mb, CEE_CPBLK);
2021 } else {
2022 int index_var;
2023 guint32 label2, label3;
2024
2025 /* Emit marshalling loop */
2026 index_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
2027 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
2028 mono_mb_emit_stloc (mb, index_var);
2029
2030 /* Loop header */
2031 label2 = mono_mb_get_label (mb);
2032 mono_mb_emit_ldloc (mb, index_var);
2033 mono_mb_emit_icon (mb, len);
2034 label3 = mono_mb_emit_branch (mb, CEE_BGE);
2035
2036 /* src/dst is already set */
2037
2038 /* Do the conversion */
2039 MonoTypeEnum t = etype->type;
2040 switch (t) {
2041 case MONO_TYPE_I4:
2042 case MONO_TYPE_U4:
2043 case MONO_TYPE_I1:
2044 case MONO_TYPE_U1:
2045 case MONO_TYPE_BOOLEAN:
2046 case MONO_TYPE_I2:
2047 case MONO_TYPE_U2:
2048 case MONO_TYPE_CHAR:
2049 case MONO_TYPE_I8:
2050 case MONO_TYPE_U8:
2051 case MONO_TYPE_PTR:
2052 case MONO_TYPE_R4:
2053 case MONO_TYPE_R8:
2054 mono_mb_emit_ldloc (mb, 1);
2055 mono_mb_emit_ldloc (mb, 0);
2056 if (t == MONO_TYPE_CHAR && string_encoding != MONO_NATIVE_LPWSTR) {
2057 if (to_object) {
2058 mono_mb_emit_byte (mb, CEE_LDIND_U1);
2059 mono_mb_emit_byte (mb, CEE_STIND_I2);
2060 } else {
2061 mono_mb_emit_byte (mb, CEE_LDIND_U2);
2062 mono_mb_emit_byte (mb, CEE_STIND_I1);
2063 }
2064 usize = 1;
2065 } else {
2066 mono_mb_emit_byte (mb, mono_type_to_ldind (etype));
2067 mono_mb_emit_byte (mb, mono_type_to_stind (etype));
2068 }
2069 break;
2070 default:
2071 g_assert_not_reached ();
2072 break;
2073 }
2074
2075 if (to_object) {
2076 mono_mb_emit_add_to_local (mb, 0, usize);
2077 mono_mb_emit_add_to_local (mb, 1, msize);
2078 } else {
2079 mono_mb_emit_add_to_local (mb, 0, msize);
2080 mono_mb_emit_add_to_local (mb, 1, usize);
2081 }
2082
2083 /* Loop footer */
2084 mono_mb_emit_add_to_local (mb, index_var, 1);
2085
2086 mono_mb_emit_branch_label (mb, CEE_BR, label2);
2087
2088 mono_mb_patch_branch (mb, label3);
2089 }
2090
2091 *out_usize = usize * len;
2092 }
2093
2094 static void
2095 emit_struct_conv_full (MonoMethodBuilder *mb, MonoClass *klass, gboolean to_object,
2096 int offset_of_first_child_field, MonoMarshalNative string_encoding)
2097 {
2098 MonoMarshalType *info;
2099 int i;
2100
2101 if (klass->parent)
2102 emit_struct_conv_full (mb, klass->parent, to_object, offset_of_first_nonstatic_field (klass), string_encoding);
2103
2104 info = mono_marshal_load_type_info (klass);
2105
2106 if (info->native_size == 0)
2107 return;
2108
2109 if (klass->blittable) {
2110 int usize = mono_class_value_size (klass, NULL);
2111 g_assert (usize == info->native_size);
2112 mono_mb_emit_ldloc (mb, 1);
2113 mono_mb_emit_ldloc (mb, 0);
2114 mono_mb_emit_icon (mb, usize);
2115 mono_mb_emit_byte (mb, CEE_PREFIX1);
2116 mono_mb_emit_byte (mb, CEE_CPBLK);
2117
2118 if (to_object) {
2119 mono_mb_emit_add_to_local (mb, 0, usize);
2120 mono_mb_emit_add_to_local (mb, 1, offset_of_first_child_field);
2121 } else {
2122 mono_mb_emit_add_to_local (mb, 0, offset_of_first_child_field);
2123 mono_mb_emit_add_to_local (mb, 1, usize);
2124 }
2125 return;
2126 }
2127
2128 if (klass != mono_class_try_get_safehandle_class ()) {
2129 if (mono_class_is_auto_layout (klass)) {
2130 char *msg = g_strdup_printf ("Type %s which is passed to unmanaged code must have a StructLayout attribute.",
2131 mono_type_full_name (&klass->byval_arg));
2132 mono_mb_emit_exception_marshal_directive (mb, msg);
2133 return;
2134 }
2135 }
2136
2137 for (i = 0; i < info->num_fields; i++) {
2138 MonoMarshalNative ntype;
2139 MonoMarshalConv conv;
2140 MonoType *ftype = info->fields [i].field->type;
2141 int msize = 0;
2142 int usize = 0;
2143 gboolean last_field = i < (info->num_fields -1) ? 0 : 1;
2144
2145 if (ftype->attrs & FIELD_ATTRIBUTE_STATIC)
2146 continue;
2147
2148 ntype = (MonoMarshalNative)mono_type_to_unmanaged (ftype, info->fields [i].mspec, TRUE, klass->unicode, &conv);
2149
2150 if (last_field) {
2151 msize = klass->instance_size - info->fields [i].field->offset;
2152 usize = info->native_size - info->fields [i].offset;
2153 } else {
2154 msize = info->fields [i + 1].field->offset - info->fields [i].field->offset;
2155 usize = info->fields [i + 1].offset - info->fields [i].offset;
2156 }
2157
2158 if (klass != mono_class_try_get_safehandle_class ()){
2159 /*
2160 * FIXME: Should really check for usize==0 and msize>0, but we apply
2161 * the layout to the managed structure as well.
2162 */
2163
2164 if (mono_class_is_explicit_layout (klass) && (usize == 0)) {
2165 if (MONO_TYPE_IS_REFERENCE (info->fields [i].field->type) ||
2166 ((!last_field && MONO_TYPE_IS_REFERENCE (info->fields [i + 1].field->type))))
2167 g_error ("Type %s which has an [ExplicitLayout] attribute cannot have a "
2168 "reference field at the same offset as another field.",
2169 mono_type_full_name (&klass->byval_arg));
2170 }
2171 }
2172
2173 switch (conv) {
2174 case MONO_MARSHAL_CONV_NONE: {
2175 int t;
2176
2177 //XXX a byref field!?!? that's not allowed! and worse, it might miss a WB
2178 g_assert (!ftype->byref);
2179 if (ftype->type == MONO_TYPE_I || ftype->type == MONO_TYPE_U) {
2180 mono_mb_emit_ldloc (mb, 1);
2181 mono_mb_emit_ldloc (mb, 0);
2182 mono_mb_emit_byte (mb, CEE_LDIND_I);
2183 mono_mb_emit_byte (mb, CEE_STIND_I);
2184 break;
2185 }
2186
2187 handle_enum:
2188 t = ftype->type;
2189 switch (t) {
2190 case MONO_TYPE_I4:
2191 case MONO_TYPE_U4:
2192 case MONO_TYPE_I1:
2193 case MONO_TYPE_U1:
2194 case MONO_TYPE_BOOLEAN:
2195 case MONO_TYPE_I2:
2196 case MONO_TYPE_U2:
2197 case MONO_TYPE_CHAR:
2198 case MONO_TYPE_I8:
2199 case MONO_TYPE_U8:
2200 case MONO_TYPE_PTR:
2201 case MONO_TYPE_R4:
2202 case MONO_TYPE_R8:
2203 mono_mb_emit_ldloc (mb, 1);
2204 mono_mb_emit_ldloc (mb, 0);
2205 if (t == MONO_TYPE_CHAR && ntype == MONO_NATIVE_U1 && string_encoding != MONO_NATIVE_LPWSTR) {
2206 if (to_object) {
2207 mono_mb_emit_byte (mb, CEE_LDIND_U1);
2208 mono_mb_emit_byte (mb, CEE_STIND_I2);
2209 } else {
2210 mono_mb_emit_byte (mb, CEE_LDIND_U2);
2211 mono_mb_emit_byte (mb, CEE_STIND_I1);
2212 }
2213 } else {
2214 mono_mb_emit_byte (mb, mono_type_to_ldind (ftype));
2215 mono_mb_emit_byte (mb, mono_type_to_stind (ftype));
2216 }
2217 break;
2218 case MONO_TYPE_VALUETYPE: {
2219 int src_var, dst_var;
2220 MonoType *etype;
2221 int len;
2222
2223 if (ftype->data.klass->enumtype) {
2224 ftype = mono_class_enum_basetype (ftype->data.klass);
2225 goto handle_enum;
2226 }
2227
2228 src_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
2229 dst_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
2230
2231 /* save the old src pointer */
2232 mono_mb_emit_ldloc (mb, 0);
2233 mono_mb_emit_stloc (mb, src_var);
2234 /* save the old dst pointer */
2235 mono_mb_emit_ldloc (mb, 1);
2236 mono_mb_emit_stloc (mb, dst_var);
2237
2238 if (get_fixed_buffer_attr (info->fields [i].field, &etype, &len)) {
2239 emit_fixed_buf_conv (mb, ftype, etype, len, to_object, &usize);
2240 } else {
2241 emit_struct_conv (mb, ftype->data.klass, to_object);
2242 }
2243
2244 /* restore the old src pointer */
2245 mono_mb_emit_ldloc (mb, src_var);
2246 mono_mb_emit_stloc (mb, 0);
2247 /* restore the old dst pointer */
2248 mono_mb_emit_ldloc (mb, dst_var);
2249 mono_mb_emit_stloc (mb, 1);
2250 break;
2251 }
2252 case MONO_TYPE_OBJECT: {
2253 #ifndef DISABLE_COM
2254 if (to_object) {
2255 static MonoMethod *variant_clear = NULL;
2256 static MonoMethod *get_object_for_native_variant = NULL;
2257
2258 if (!variant_clear)
2259 variant_clear = mono_class_get_method_from_name (mono_class_get_variant_class (), "Clear", 0);
2260 if (!get_object_for_native_variant)
2261 get_object_for_native_variant = mono_class_get_method_from_name (mono_defaults.marshal_class, "GetObjectForNativeVariant", 1);
2262 mono_mb_emit_ldloc (mb, 1);
2263 mono_mb_emit_ldloc (mb, 0);
2264 mono_mb_emit_managed_call (mb, get_object_for_native_variant, NULL);
2265 mono_mb_emit_byte (mb, CEE_STIND_REF);
2266
2267 mono_mb_emit_ldloc (mb, 0);
2268 mono_mb_emit_managed_call (mb, variant_clear, NULL);
2269 }
2270 else {
2271 static MonoMethod *get_native_variant_for_object = NULL;
2272
2273 if (!get_native_variant_for_object)
2274 get_native_variant_for_object = mono_class_get_method_from_name (mono_defaults.marshal_class, "GetNativeVariantForObject", 2);
2275
2276 mono_mb_emit_ldloc (mb, 0);
2277 mono_mb_emit_byte(mb, CEE_LDIND_REF);
2278 mono_mb_emit_ldloc (mb, 1);
2279 mono_mb_emit_managed_call (mb, get_native_variant_for_object, NULL);
2280 }
2281 #else
2282 char *msg = g_strdup_printf ("COM support was disabled at compilation time.");
2283 mono_mb_emit_exception_marshal_directive (mb, msg);
2284 #endif
2285 break;
2286 }
2287
2288 default:
2289 g_warning ("marshaling type %02x not implemented", ftype->type);
2290 g_assert_not_reached ();
2291 }
2292 break;
2293 }
2294 default: {
2295 int src_var, dst_var;
2296
2297 src_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
2298 dst_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
2299
2300 /* save the old src pointer */
2301 mono_mb_emit_ldloc (mb, 0);
2302 mono_mb_emit_stloc (mb, src_var);
2303 /* save the old dst pointer */
2304 mono_mb_emit_ldloc (mb, 1);
2305 mono_mb_emit_stloc (mb, dst_var);
2306
2307 if (to_object)
2308 emit_ptr_to_object_conv (mb, ftype, conv, info->fields [i].mspec);
2309 else
2310 emit_object_to_ptr_conv (mb, ftype, conv, info->fields [i].mspec);
2311
2312 /* restore the old src pointer */
2313 mono_mb_emit_ldloc (mb, src_var);
2314 mono_mb_emit_stloc (mb, 0);
2315 /* restore the old dst pointer */
2316 mono_mb_emit_ldloc (mb, dst_var);
2317 mono_mb_emit_stloc (mb, 1);
2318 }
2319 }
2320
2321 if (to_object) {
2322 mono_mb_emit_add_to_local (mb, 0, usize);
2323 mono_mb_emit_add_to_local (mb, 1, msize);
2324 } else {
2325 mono_mb_emit_add_to_local (mb, 0, msize);
2326 mono_mb_emit_add_to_local (mb, 1, usize);
2327 }
2328 }
2329 }
2330
2331 static void
2332 emit_struct_conv (MonoMethodBuilder *mb, MonoClass *klass, gboolean to_object)
2333 {
2334 emit_struct_conv_full (mb, klass, to_object, 0, (MonoMarshalNative)-1);
2335 }
2336
2337 static void
2338 emit_struct_free (MonoMethodBuilder *mb, MonoClass *klass, int struct_var)
2339 {
2340 /* Call DestroyStructure */
2341 /* FIXME: Only do this if needed */
2342 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
2343 mono_mb_emit_op (mb, CEE_MONO_CLASSCONST, klass);
2344 mono_mb_emit_ldloc (mb, struct_var);
2345 mono_mb_emit_icall (mb, mono_struct_delete_old);
2346 }
2347
2348 static void
2349 emit_thread_interrupt_checkpoint_call (MonoMethodBuilder *mb, gpointer checkpoint_func)
2350 {
2351 int pos_noabort, pos_noex;
2352
2353 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
2354 mono_mb_emit_byte (mb, CEE_MONO_LDPTR_INT_REQ_FLAG);
2355 mono_mb_emit_byte (mb, CEE_LDIND_U4);
2356 pos_noabort = mono_mb_emit_branch (mb, CEE_BRFALSE);
2357
2358 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
2359 mono_mb_emit_byte (mb, CEE_MONO_NOT_TAKEN);
2360
2361 mono_mb_emit_icall (mb, checkpoint_func);
2362 /* Throw the exception returned by the checkpoint function, if any */
2363 mono_mb_emit_byte (mb, CEE_DUP);
2364 pos_noex = mono_mb_emit_branch (mb, CEE_BRFALSE);
2365 mono_mb_emit_byte (mb, CEE_THROW);
2366 mono_mb_patch_branch (mb, pos_noex);
2367 mono_mb_emit_byte (mb, CEE_POP);
2368
2369 mono_mb_patch_branch (mb, pos_noabort);
2370 }
2371
2372 static void
2373 emit_thread_interrupt_checkpoint (MonoMethodBuilder *mb)
2374 {
2375 if (strstr (mb->name, "mono_thread_interruption_checkpoint"))
2376 return;
2377
2378 emit_thread_interrupt_checkpoint_call (mb, mono_thread_interruption_checkpoint);
2379 }
2380
2381 static void
2382 emit_thread_force_interrupt_checkpoint (MonoMethodBuilder *mb)
2383 {
2384 emit_thread_interrupt_checkpoint_call (mb, mono_thread_force_interruption_checkpoint_noraise);
2385 }
2386
2387 void
2388 mono_marshal_emit_thread_interrupt_checkpoint (MonoMethodBuilder *mb)
2389 {
2390 emit_thread_interrupt_checkpoint (mb);
2391 }
2392
2393 void
2394 mono_marshal_emit_thread_force_interrupt_checkpoint (MonoMethodBuilder *mb)
2395 {
2396 emit_thread_force_interrupt_checkpoint (mb);
2397 }
2398
2399 #endif /* DISABLE_JIT */
2400
2401 /* This is a JIT icall, it sets the pending exception and returns NULL on error. */
2402 static MonoAsyncResult *
2403 mono_delegate_begin_invoke (MonoDelegate *delegate, gpointer *params)
2404 {
2405 MonoError error;
2406 MonoMulticastDelegate *mcast_delegate;
2407 MonoClass *klass;
2408 MonoMethod *method;
2409
2410 g_assert (delegate);
2411 mcast_delegate = (MonoMulticastDelegate *) delegate;
2412 if (mcast_delegate->delegates != NULL) {
2413 mono_set_pending_exception (mono_get_exception_argument (NULL, "The delegate must have only one target"));
2414 return NULL;
2415 }
2416
2417 #ifndef DISABLE_REMOTING
2418 if (delegate->target && mono_object_is_transparent_proxy (delegate->target)) {
2419 MonoTransparentProxy* tp = (MonoTransparentProxy *)delegate->target;
2420 if (!mono_class_is_contextbound (tp->remote_class->proxy_class) || tp->rp->context != (MonoObject *) mono_context_get ()) {
2421 /* If the target is a proxy, make a direct call. Is proxy's work
2422 // to make the call asynchronous.
2423 */
2424 MonoMethodMessage *msg;
2425 MonoDelegate *async_callback;
2426 MonoObject *state;
2427 MonoAsyncResult *ares;
2428 MonoObject *exc;
2429 MonoArray *out_args;
2430 method = delegate->method;
2431
2432 msg = mono_method_call_message_new (mono_marshal_method_from_wrapper (method), params, NULL, &async_callback, &state, &error);
2433 if (mono_error_set_pending_exception (&error))
2434 return NULL;
2435 ares = mono_async_result_new (mono_domain_get (), NULL, state, NULL, NULL, &error);
2436 if (mono_error_set_pending_exception (&error))
2437 return NULL;
2438 MONO_OBJECT_SETREF (ares, async_delegate, (MonoObject *)delegate);
2439 MONO_OBJECT_SETREF (ares, async_callback, (MonoObject *)async_callback);
2440 MONO_OBJECT_SETREF (msg, async_result, ares);
2441 msg->call_type = CallType_BeginInvoke;
2442
2443 exc = NULL;
2444 mono_remoting_invoke ((MonoObject *)tp->rp, msg, &exc, &out_args, &error);
2445 if (!mono_error_ok (&error)) {
2446 mono_error_set_pending_exception (&error);
2447 return NULL;
2448 }
2449 if (exc)
2450 mono_set_pending_exception ((MonoException *) exc);
2451 return ares;
2452 }
2453 }
2454 #endif
2455
2456 klass = delegate->object.vtable->klass;
2457
2458 method = mono_class_get_method_from_name (klass, "BeginInvoke", -1);
2459 if (!method)
2460 method = mono_get_delegate_invoke (klass);
2461 g_assert (method);
2462
2463 MonoAsyncResult *result = mono_threadpool_begin_invoke (mono_domain_get (), (MonoObject*) delegate, method, params, &error);
2464 mono_error_set_pending_exception (&error);
2465 return result;
2466 }
2467
2468 #ifndef DISABLE_JIT
2469
2470 int
2471 mono_mb_emit_save_args (MonoMethodBuilder *mb, MonoMethodSignature *sig, gboolean save_this)
2472 {
2473 int i, params_var, tmp_var;
2474
2475 /* allocate local (pointer) *params[] */
2476 params_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
2477 /* allocate local (pointer) tmp */
2478 tmp_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
2479
2480 /* alloate space on stack to store an array of pointers to the arguments */
2481 mono_mb_emit_icon (mb, sizeof (gpointer) * (sig->param_count + 1));
2482 mono_mb_emit_byte (mb, CEE_PREFIX1);
2483 mono_mb_emit_byte (mb, CEE_LOCALLOC);
2484 mono_mb_emit_stloc (mb, params_var);
2485
2486 /* tmp = params */
2487 mono_mb_emit_ldloc (mb, params_var);
2488 mono_mb_emit_stloc (mb, tmp_var);
2489
2490 if (save_this && sig->hasthis) {
2491 mono_mb_emit_ldloc (mb, tmp_var);
2492 mono_mb_emit_ldarg_addr (mb, 0);
2493 mono_mb_emit_byte (mb, CEE_STIND_I);
2494 /* tmp = tmp + sizeof (gpointer) */
2495 if (sig->param_count)
2496 mono_mb_emit_add_to_local (mb, tmp_var, sizeof (gpointer));
2497
2498 }
2499
2500 for (i = 0; i < sig->param_count; i++) {
2501 mono_mb_emit_ldloc (mb, tmp_var);
2502 mono_mb_emit_ldarg_addr (mb, i + sig->hasthis);
2503 mono_mb_emit_byte (mb, CEE_STIND_I);
2504 /* tmp = tmp + sizeof (gpointer) */
2505 if (i < (sig->param_count - 1))
2506 mono_mb_emit_add_to_local (mb, tmp_var, sizeof (gpointer));
2507 }
2508
2509 return params_var;
2510 }
2511
2512 #endif /* DISABLE_JIT */
2513
2514 static char*
2515 mono_signature_to_name (MonoMethodSignature *sig, const char *prefix)
2516 {
2517 int i;
2518 char *result;
2519 GString *res = g_string_new ("");
2520
2521 if (prefix) {
2522 g_string_append (res, prefix);
2523 g_string_append_c (res, '_');
2524 }
2525
2526 mono_type_get_desc (res, sig->ret, FALSE);
2527
2528 if (sig->hasthis)
2529 g_string_append (res, "__this__");
2530
2531 for (i = 0; i < sig->param_count; ++i) {
2532 g_string_append_c (res, '_');
2533 mono_type_get_desc (res, sig->params [i], FALSE);
2534 }
2535 result = res->str;
2536 g_string_free (res, FALSE);
2537 return result;
2538 }
2539
2540 /**
2541 * mono_marshal_get_string_encoding:
2542 *
2543 * Return the string encoding which should be used for a given parameter.
2544 */
2545 static MonoMarshalNative
2546 mono_marshal_get_string_encoding (MonoMethodPInvoke *piinfo, MonoMarshalSpec *spec)
2547 {
2548 /* First try the parameter marshal info */
2549 if (spec) {
2550 if (spec->native == MONO_NATIVE_LPARRAY) {
2551 if ((spec->data.array_data.elem_type != 0) && (spec->data.array_data.elem_type != MONO_NATIVE_MAX))
2552 return spec->data.array_data.elem_type;
2553 }
2554 else
2555 return spec->native;
2556 }
2557
2558 if (!piinfo)
2559 return MONO_NATIVE_LPSTR;
2560
2561 /* Then try the method level marshal info */
2562 switch (piinfo->piflags & PINVOKE_ATTRIBUTE_CHAR_SET_MASK) {
2563 case PINVOKE_ATTRIBUTE_CHAR_SET_ANSI:
2564 return MONO_NATIVE_LPSTR;
2565 case PINVOKE_ATTRIBUTE_CHAR_SET_UNICODE:
2566 return MONO_NATIVE_LPWSTR;
2567 case PINVOKE_ATTRIBUTE_CHAR_SET_AUTO:
2568 #ifdef TARGET_WIN32
2569 return MONO_NATIVE_LPWSTR;
2570 #else
2571 return MONO_NATIVE_LPSTR;
2572 #endif
2573 default:
2574 return MONO_NATIVE_LPSTR;
2575 }
2576 }
2577
2578 static MonoMarshalConv
2579 mono_marshal_get_string_to_ptr_conv (MonoMethodPInvoke *piinfo, MonoMarshalSpec *spec)
2580 {
2581 MonoMarshalNative encoding = mono_marshal_get_string_encoding (piinfo, spec);
2582
2583 switch (encoding) {
2584 case MONO_NATIVE_LPWSTR:
2585 return MONO_MARSHAL_CONV_STR_LPWSTR;
2586 case MONO_NATIVE_LPSTR:
2587 case MONO_NATIVE_VBBYREFSTR:
2588 return MONO_MARSHAL_CONV_STR_LPSTR;
2589 case MONO_NATIVE_LPTSTR:
2590 return MONO_MARSHAL_CONV_STR_LPTSTR;
2591 case MONO_NATIVE_BSTR:
2592 return MONO_MARSHAL_CONV_STR_BSTR;
2593 case MONO_NATIVE_UTF8STR:
2594 return MONO_MARSHAL_CONV_STR_UTF8STR;
2595 default:
2596 return MONO_MARSHAL_CONV_INVALID;
2597 }
2598 }
2599
2600 static MonoMarshalConv
2601 mono_marshal_get_stringbuilder_to_ptr_conv (MonoMethodPInvoke *piinfo, MonoMarshalSpec *spec)
2602 {
2603 MonoMarshalNative encoding = mono_marshal_get_string_encoding (piinfo, spec);
2604
2605 switch (encoding) {
2606 case MONO_NATIVE_LPWSTR:
2607 return MONO_MARSHAL_CONV_SB_LPWSTR;
2608 case MONO_NATIVE_LPSTR:
2609 return MONO_MARSHAL_CONV_SB_LPSTR;
2610 case MONO_NATIVE_UTF8STR:
2611 return MONO_MARSHAL_CONV_SB_UTF8STR;
2612 case MONO_NATIVE_LPTSTR:
2613 return MONO_MARSHAL_CONV_SB_LPTSTR;
2614 default:
2615 return MONO_MARSHAL_CONV_INVALID;
2616 }
2617 }
2618
2619 static MonoMarshalConv
2620 mono_marshal_get_ptr_to_string_conv (MonoMethodPInvoke *piinfo, MonoMarshalSpec *spec, gboolean *need_free)
2621 {
2622 MonoMarshalNative encoding = mono_marshal_get_string_encoding (piinfo, spec);
2623
2624 *need_free = TRUE;
2625
2626 switch (encoding) {
2627 case MONO_NATIVE_LPWSTR:
2628 *need_free = FALSE;
2629 return MONO_MARSHAL_CONV_LPWSTR_STR;
2630 case MONO_NATIVE_UTF8STR:
2631 return MONO_MARSHAL_CONV_UTF8STR_STR;
2632 case MONO_NATIVE_LPSTR:
2633 case MONO_NATIVE_VBBYREFSTR:
2634 return MONO_MARSHAL_CONV_LPSTR_STR;
2635 case MONO_NATIVE_LPTSTR:
2636 #ifdef TARGET_WIN32
2637 *need_free = FALSE;
2638 #endif
2639 return MONO_MARSHAL_CONV_LPTSTR_STR;
2640 case MONO_NATIVE_BSTR:
2641 return MONO_MARSHAL_CONV_BSTR_STR;
2642 default:
2643 return MONO_MARSHAL_CONV_INVALID;
2644 }
2645 }
2646
2647 static MonoMarshalConv
2648 mono_marshal_get_ptr_to_stringbuilder_conv (MonoMethodPInvoke *piinfo, MonoMarshalSpec *spec, gboolean *need_free)
2649 {
2650 MonoMarshalNative encoding = mono_marshal_get_string_encoding (piinfo, spec);
2651
2652 *need_free = TRUE;
2653
2654 switch (encoding) {
2655 case MONO_NATIVE_LPWSTR:
2656 /*
2657 * mono_string_builder_to_utf16 does not allocate a
2658 * new buffer, so no need to free it.
2659 */
2660 *need_free = FALSE;
2661 return MONO_MARSHAL_CONV_LPWSTR_SB;
2662 case MONO_NATIVE_UTF8STR:
2663 return MONO_MARSHAL_CONV_UTF8STR_SB;
2664 case MONO_NATIVE_LPSTR:
2665 return MONO_MARSHAL_CONV_LPSTR_SB;
2666 break;
2667 case MONO_NATIVE_LPTSTR:
2668 return MONO_MARSHAL_CONV_LPTSTR_SB;
2669 break;
2670 default:
2671 return MONO_MARSHAL_CONV_INVALID;
2672 }
2673 }
2674
2675 /*
2676 * Return whenever a field of a native structure or an array member needs to
2677 * be freed.
2678 */
2679 static gboolean
2680 mono_marshal_need_free (MonoType *t, MonoMethodPInvoke *piinfo, MonoMarshalSpec *spec)
2681 {
2682 MonoMarshalNative encoding;
2683
2684 switch (t->type) {
2685 case MONO_TYPE_VALUETYPE:
2686 /* FIXME: Optimize this */
2687 return TRUE;
2688 case MONO_TYPE_OBJECT:
2689 case MONO_TYPE_CLASS:
2690 if (t->data.klass == mono_defaults.stringbuilder_class) {
2691 gboolean need_free;
2692 mono_marshal_get_ptr_to_stringbuilder_conv (piinfo, spec, &need_free);
2693 return need_free;
2694 }
2695 return FALSE;
2696 case MONO_TYPE_STRING:
2697 encoding = mono_marshal_get_string_encoding (piinfo, spec);
2698 return (encoding == MONO_NATIVE_LPWSTR) ? FALSE : TRUE;
2699 default:
2700 return FALSE;
2701 }
2702 }
2703
2704 /*
2705 * Return the hash table pointed to by VAR, lazily creating it if neccesary.
2706 */
2707 static GHashTable*
2708 get_cache (GHashTable **var, GHashFunc hash_func, GCompareFunc equal_func)
2709 {
2710 if (!(*var)) {
2711 mono_marshal_lock ();
2712 if (!(*var)) {
2713 GHashTable *cache =
2714 g_hash_table_new (hash_func, equal_func);
2715 mono_memory_barrier ();
2716 *var = cache;
2717 }
2718 mono_marshal_unlock ();
2719 }
2720 return *var;
2721 }
2722
2723 GHashTable*
2724 mono_marshal_get_cache (GHashTable **var, GHashFunc hash_func, GCompareFunc equal_func)
2725 {
2726 return get_cache (var, hash_func, equal_func);
2727 }
2728
2729 MonoMethod*
2730 mono_marshal_find_in_cache (GHashTable *cache, gpointer key)
2731 {
2732 MonoMethod *res;
2733
2734 mono_marshal_lock ();
2735 res = (MonoMethod *)g_hash_table_lookup (cache, key);
2736 mono_marshal_unlock ();
2737 return res;
2738 }
2739
2740 /*
2741 * mono_mb_create:
2742 *
2743 * Create a MonoMethod from MB, set INFO as wrapper info.
2744 */
2745 MonoMethod*
2746 mono_mb_create (MonoMethodBuilder *mb, MonoMethodSignature *sig,
2747 int max_stack, WrapperInfo *info)
2748 {
2749 MonoMethod *res;
2750
2751 res = mono_mb_create_method (mb, sig, max_stack);
2752 if (info)
2753 mono_marshal_set_wrapper_info (res, info);
2754 return res;
2755 }
2756
2757 /* Create the method from the builder and place it in the cache */
2758 MonoMethod*
2759 mono_mb_create_and_cache_full (GHashTable *cache, gpointer key,
2760 MonoMethodBuilder *mb, MonoMethodSignature *sig,
2761 int max_stack, WrapperInfo *info, gboolean *out_found)
2762 {
2763 MonoMethod *res;
2764
2765 if (out_found)
2766 *out_found = FALSE;
2767
2768 mono_marshal_lock ();
2769 res = (MonoMethod *)g_hash_table_lookup (cache, key);
2770 mono_marshal_unlock ();
2771 if (!res) {
2772 MonoMethod *newm;
2773 newm = mono_mb_create_method (mb, sig, max_stack);
2774 mono_marshal_lock ();
2775 res = (MonoMethod *)g_hash_table_lookup (cache, key);
2776 if (!res) {
2777 res = newm;
2778 g_hash_table_insert (cache, key, res);
2779 mono_marshal_set_wrapper_info (res, info);
2780 mono_marshal_unlock ();
2781 } else {
2782 if (out_found)
2783 *out_found = TRUE;
2784 mono_marshal_unlock ();
2785 mono_free_method (newm);
2786 }
2787 }
2788
2789 return res;
2790 }
2791
2792 MonoMethod*
2793 mono_mb_create_and_cache (GHashTable *cache, gpointer key,
2794 MonoMethodBuilder *mb, MonoMethodSignature *sig,
2795 int max_stack)
2796 {
2797 return mono_mb_create_and_cache_full (cache, key, mb, sig, max_stack, NULL, NULL);
2798 }
2799
2800 MonoMethod *
2801 mono_marshal_method_from_wrapper (MonoMethod *wrapper)
2802 {
2803 MonoMethod *m;
2804 int wrapper_type = wrapper->wrapper_type;
2805 WrapperInfo *info;
2806
2807 if (wrapper_type == MONO_WRAPPER_NONE || wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD)
2808 return wrapper;
2809
2810 info = mono_marshal_get_wrapper_info (wrapper);
2811
2812 switch (wrapper_type) {
2813 case MONO_WRAPPER_REMOTING_INVOKE:
2814 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK:
2815 case MONO_WRAPPER_XDOMAIN_INVOKE:
2816 m = info->d.remoting.method;
2817 if (wrapper->is_inflated) {
2818 MonoError error;
2819 MonoMethod *result;
2820 /*
2821 * A method cannot be inflated and a wrapper at the same time, so the wrapper info
2822 * contains an uninflated method.
2823 */
2824 result = mono_class_inflate_generic_method_checked (m, mono_method_get_context (wrapper), &error);
2825 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
2826 return result;
2827 }
2828 return m;
2829 case MONO_WRAPPER_SYNCHRONIZED:
2830 m = info->d.synchronized.method;
2831 if (wrapper->is_inflated) {
2832 MonoError error;
2833 MonoMethod *result;
2834 result = mono_class_inflate_generic_method_checked (m, mono_method_get_context (wrapper), &error);
2835 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
2836 return result;
2837 }
2838 return m;
2839 case MONO_WRAPPER_UNBOX:
2840 return info->d.unbox.method;
2841 case MONO_WRAPPER_MANAGED_TO_NATIVE:
2842 if (info && (info->subtype == WRAPPER_SUBTYPE_NONE || info->subtype == WRAPPER_SUBTYPE_NATIVE_FUNC_AOT || info->subtype == WRAPPER_SUBTYPE_PINVOKE))
2843 return info->d.managed_to_native.method;
2844 else
2845 return NULL;
2846 case MONO_WRAPPER_RUNTIME_INVOKE:
2847 if (info && (info->subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_DIRECT || info->subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_VIRTUAL))
2848 return info->d.runtime_invoke.method;
2849 else
2850 return NULL;
2851 case MONO_WRAPPER_DELEGATE_INVOKE:
2852 if (info)
2853 return info->d.delegate_invoke.method;
2854 else
2855 return NULL;
2856 default:
2857 return NULL;
2858 }
2859 }
2860
2861 /*
2862 * mono_marshal_get_wrapper_info:
2863 *
2864 * Retrieve the WrapperInfo structure associated with WRAPPER.
2865 */
2866 WrapperInfo*
2867 mono_marshal_get_wrapper_info (MonoMethod *wrapper)
2868 {
2869 g_assert (wrapper->wrapper_type);
2870
2871 return (WrapperInfo *)mono_method_get_wrapper_data (wrapper, 1);
2872 }
2873
2874 /*
2875 * mono_marshal_set_wrapper_info:
2876 *
2877 * Set the WrapperInfo structure associated with the wrapper
2878 * method METHOD to INFO.
2879 */
2880 void
2881 mono_marshal_set_wrapper_info (MonoMethod *method, WrapperInfo *info)
2882 {
2883 void **datav;
2884 /* assert */
2885 if (method->wrapper_type == MONO_WRAPPER_NONE || method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD)
2886 return;
2887
2888 datav = (void **)((MonoMethodWrapper *)method)->method_data;
2889 datav [1] = info;
2890 }
2891
2892 WrapperInfo*
2893 mono_wrapper_info_create (MonoMethodBuilder *mb, WrapperSubtype subtype)
2894 {
2895 WrapperInfo *info;
2896
2897 info = (WrapperInfo *)mono_image_alloc0 (mb->method->klass->image, sizeof (WrapperInfo));
2898 info->subtype = subtype;
2899 return info;
2900 }
2901
2902 /*
2903 * get_wrapper_target_class:
2904 *
2905 * Return the class where a wrapper method should be placed.
2906 */
2907 static MonoClass*
2908 get_wrapper_target_class (MonoImage *image)
2909 {
2910 MonoError error;
2911 MonoClass *klass;
2912
2913 /*
2914 * Notes:
2915 * - can't put all wrappers into an mscorlib class, because they reference
2916 * metadata (signature) so they should be put into the same image as the
2917 * method they wrap, so they are unloaded together.
2918 * - putting them into a class with a type initalizer could cause the
2919 * initializer to be executed which can be a problem if the wrappers are
2920 * shared.
2921 * - putting them into an inflated class can cause problems if the the
2922 * class is deleted because it references an image which is unloaded.
2923 * To avoid these problems, we put the wrappers into the <Module> class of
2924 * the image.
2925 */
2926 if (image_is_dynamic (image)) {
2927 klass = ((MonoDynamicImage*)image)->wrappers_type;
2928 } else {
2929 klass = mono_class_get_checked (image, mono_metadata_make_token (MONO_TABLE_TYPEDEF, 1), &error);
2930 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
2931 }
2932 g_assert (klass);
2933
2934 return klass;
2935 }
2936
2937 /*
2938 * Wrappers for generic methods should be instances of generic wrapper methods, i.e .the wrapper for Sort<int> should be
2939 * an instance of the wrapper for Sort<T>. This is required for full-aot to work.
2940 */
2941
2942 /*
2943 * check_generic_wrapper_cache:
2944 *
2945 * Check CACHE for the wrapper of the generic instance ORIG_METHOD, and return it if it is found.
2946 * KEY should be the key for ORIG_METHOD in the cache, while DEF_KEY should be the key of its
2947 * generic method definition.
2948 */
2949 static MonoMethod*
2950 check_generic_wrapper_cache (GHashTable *cache, MonoMethod *orig_method, gpointer key, gpointer def_key)
2951 {
2952 MonoMethod *res;
2953 MonoMethod *inst, *def;
2954 MonoGenericContext *ctx;
2955
2956 g_assert (orig_method->is_inflated);
2957 ctx = mono_method_get_context (orig_method);
2958
2959 /*
2960 * Look for the instance
2961 */
2962 res = mono_marshal_find_in_cache (cache, key);
2963 if (res)
2964 return res;
2965
2966 /*
2967 * Look for the definition
2968 */
2969 def = mono_marshal_find_in_cache (cache, def_key);
2970 if (def) {
2971 MonoError error;
2972 inst = mono_class_inflate_generic_method_checked (def, ctx, &error);
2973 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
2974 /* Cache it */
2975 mono_memory_barrier ();
2976 mono_marshal_lock ();
2977 res = (MonoMethod *)g_hash_table_lookup (cache, key);
2978 if (!res) {
2979 g_hash_table_insert (cache, key, inst);
2980 res = inst;
2981 }
2982 mono_marshal_unlock ();
2983 return res;
2984 }
2985 return NULL;
2986 }
2987
2988 static MonoMethod*
2989 cache_generic_wrapper (GHashTable *cache, MonoMethod *orig_method, MonoMethod *def, MonoGenericContext *ctx, gpointer key)
2990 {
2991 MonoError error;
2992 MonoMethod *inst, *res;
2993
2994 /*
2995 * We use the same cache for the generic definition and the instances.
2996 */
2997 inst = mono_class_inflate_generic_method_checked (def, ctx, &error);
2998 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
2999 mono_memory_barrier ();
3000 mono_marshal_lock ();
3001 res = (MonoMethod *)g_hash_table_lookup (cache, key);
3002 if (!res) {
3003 g_hash_table_insert (cache, key, inst);
3004 res = inst;
3005 }
3006 mono_marshal_unlock ();
3007 return res;
3008 }
3009
3010 static MonoMethod*
3011 check_generic_delegate_wrapper_cache (GHashTable *cache, MonoMethod *orig_method, MonoMethod *def_method, MonoGenericContext *ctx)
3012 {
3013 MonoError error;
3014 MonoMethod *res;
3015 MonoMethod *inst, *def;
3016
3017 /*
3018 * Look for the instance
3019 */
3020 res = mono_marshal_find_in_cache (cache, orig_method->klass);
3021 if (res)
3022 return res;
3023
3024 /*
3025 * Look for the definition
3026 */
3027 def = mono_marshal_find_in_cache (cache, def_method->klass);
3028 if (def) {
3029 inst = mono_class_inflate_generic_method_checked (def, ctx, &error);
3030 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
3031
3032 /* Cache it */
3033 mono_memory_barrier ();
3034 mono_marshal_lock ();
3035 res = (MonoMethod *)g_hash_table_lookup (cache, orig_method->klass);
3036 if (!res) {
3037 g_hash_table_insert (cache, orig_method->klass, inst);
3038 res = inst;
3039 }
3040 mono_marshal_unlock ();
3041 return res;
3042 }
3043 return NULL;
3044 }
3045
3046 static MonoMethod*
3047 cache_generic_delegate_wrapper (GHashTable *cache, MonoMethod *orig_method, MonoMethod *def, MonoGenericContext *ctx)
3048 {
3049 MonoError error;
3050 MonoMethod *inst, *res;
3051 WrapperInfo *ginfo, *info;
3052
3053 /*
3054 * We use the same cache for the generic definition and the instances.
3055 */
3056 inst = mono_class_inflate_generic_method_checked (def, ctx, &error);
3057 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
3058
3059 ginfo = mono_marshal_get_wrapper_info (def);
3060 if (ginfo) {
3061 info = (WrapperInfo *)mono_image_alloc0 (def->klass->image, sizeof (WrapperInfo));
3062 info->subtype = ginfo->subtype;
3063 if (info->subtype == WRAPPER_SUBTYPE_NONE) {
3064 info->d.delegate_invoke.method = mono_class_inflate_generic_method_checked (ginfo->d.delegate_invoke.method, ctx, &error);
3065 mono_error_assert_ok (&error);
3066 }
3067 }
3068
3069 mono_memory_barrier ();
3070 mono_marshal_lock ();
3071 res = (MonoMethod *)g_hash_table_lookup (cache, orig_method->klass);
3072 if (!res) {
3073 g_hash_table_insert (cache, orig_method->klass, inst);
3074 res = inst;
3075 }
3076 mono_marshal_unlock ();
3077 return res;
3078 }
3079
3080 MonoMethod *
3081 mono_marshal_get_delegate_begin_invoke (MonoMethod *method)
3082 {
3083 MonoMethodSignature *sig;
3084 MonoMethodBuilder *mb;
3085 MonoMethod *res;
3086 GHashTable *cache;
3087 int params_var;
3088 char *name;
3089 MonoGenericContext *ctx = NULL;
3090 MonoMethod *orig_method = NULL;
3091
3092 g_assert (method && method->klass->parent == mono_defaults.multicastdelegate_class &&
3093 !strcmp (method->name, "BeginInvoke"));
3094
3095 /*
3096 * For generic delegates, create a generic wrapper, and returns an instance to help AOT.
3097 */
3098 if (method->is_inflated) {
3099 orig_method = method;
3100 ctx = &((MonoMethodInflated*)method)->context;
3101 method = ((MonoMethodInflated*)method)->declaring;
3102 }
3103
3104 sig = mono_signature_no_pinvoke (method);
3105
3106 /*
3107 * Check cache
3108 */
3109 if (ctx) {
3110 cache = get_cache (&((MonoMethodInflated*)orig_method)->owner->wrapper_caches.delegate_begin_invoke_cache, mono_aligned_addr_hash, NULL);
3111 res = check_generic_delegate_wrapper_cache (cache, orig_method, method, ctx);
3112 if (res)
3113 return res;
3114 } else {
3115 cache = get_cache (&method->klass->image->wrapper_caches.delegate_begin_invoke_cache,
3116 (GHashFunc)mono_signature_hash,
3117 (GCompareFunc)mono_metadata_signature_equal);
3118 if ((res = mono_marshal_find_in_cache (cache, sig)))
3119 return res;
3120 }
3121
3122 g_assert (sig->hasthis);
3123
3124 name = mono_signature_to_name (sig, "begin_invoke");
3125 if (ctx)
3126 mb = mono_mb_new (method->klass, name, MONO_WRAPPER_DELEGATE_BEGIN_INVOKE);
3127 else
3128 mb = mono_mb_new (get_wrapper_target_class (method->klass->image), name, MONO_WRAPPER_DELEGATE_BEGIN_INVOKE);
3129 g_free (name);
3130
3131 #ifndef DISABLE_JIT
3132 params_var = mono_mb_emit_save_args (mb, sig, FALSE);
3133
3134 mono_mb_emit_ldarg (mb, 0);
3135 mono_mb_emit_ldloc (mb, params_var);
3136 mono_mb_emit_icall (mb, mono_delegate_begin_invoke);
3137 mono_mb_emit_byte (mb, CEE_RET);
3138 #endif
3139
3140 if (ctx) {
3141 MonoMethod *def;
3142 def = mono_mb_create_and_cache (cache, method->klass, mb, sig, sig->param_count + 16);
3143 res = cache_generic_delegate_wrapper (cache, orig_method, def, ctx);
3144 } else {
3145 res = mono_mb_create_and_cache (cache, sig, mb, sig, sig->param_count + 16);
3146 }
3147
3148 mono_mb_free (mb);
3149 return res;
3150 }
3151
3152 /* This is a JIT icall, it sets the pending exception and returns NULL on error. */
3153 static MonoObject *
3154 mono_delegate_end_invoke (MonoDelegate *delegate, gpointer *params)
3155 {
3156 MonoError error;
3157 MonoDomain *domain = mono_domain_get ();
3158 MonoAsyncResult *ares;
3159 MonoMethod *method = NULL;
3160 MonoMethodSignature *sig;
3161 MonoMethodMessage *msg;
3162 MonoObject *res, *exc;
3163 MonoArray *out_args;
3164 MonoClass *klass;
3165
3166 g_assert (delegate);
3167
3168 if (!delegate->method_info) {
3169 g_assert (delegate->method);
3170 MonoReflectionMethod *rm = mono_method_get_object_checked (domain, delegate->method, NULL, &error);
3171 if (!mono_error_ok (&error)) {
3172 mono_error_set_pending_exception (&error);
3173 return NULL;
3174 }
3175 MONO_OBJECT_SETREF (delegate, method_info, rm);
3176 }
3177
3178 if (!delegate->method_info || !delegate->method_info->method)
3179 g_assert_not_reached ();
3180
3181 klass = delegate->object.vtable->klass;
3182
3183 method = mono_class_get_method_from_name (klass, "EndInvoke", -1);
3184 g_assert (method != NULL);
3185
3186 sig = mono_signature_no_pinvoke (method);
3187
3188 msg = mono_method_call_message_new (method, params, NULL, NULL, NULL, &error);
3189 if (mono_error_set_pending_exception (&error))
3190 return NULL;
3191
3192 ares = (MonoAsyncResult *)mono_array_get (msg->args, gpointer, sig->param_count - 1);
3193 if (ares == NULL) {
3194 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."));
3195 return NULL;
3196 }
3197
3198 if (ares->async_delegate != (MonoObject*)delegate) {
3199 mono_set_pending_exception (mono_get_exception_invalid_operation (
3200 "The IAsyncResult object provided does not match this delegate."));
3201 return NULL;
3202 }
3203
3204 #ifndef DISABLE_REMOTING
3205 if (delegate->target && mono_object_is_transparent_proxy (delegate->target)) {
3206 MonoTransparentProxy* tp = (MonoTransparentProxy *)delegate->target;
3207 msg = (MonoMethodMessage *)mono_object_new_checked (domain, mono_defaults.mono_method_message_class, &error);
3208 if (!mono_error_ok (&error)) {
3209 mono_error_set_pending_exception (&error);
3210 return NULL;
3211 }
3212 mono_message_init (domain, msg, delegate->method_info, NULL, &error);
3213 if (mono_error_set_pending_exception (&error))
3214 return NULL;
3215 msg->call_type = CallType_EndInvoke;
3216 MONO_OBJECT_SETREF (msg, async_result, ares);
3217 res = mono_remoting_invoke ((MonoObject *)tp->rp, msg, &exc, &out_args, &error);
3218 if (!mono_error_ok (&error)) {
3219 mono_error_set_pending_exception (&error);
3220 return NULL;
3221 }
3222 } else
3223 #endif
3224 {
3225 res = mono_threadpool_end_invoke (ares, &out_args, &exc, &error);
3226 if (mono_error_set_pending_exception (&error))
3227 return NULL;
3228 }
3229
3230 if (exc) {
3231 if (((MonoException*)exc)->stack_trace) {
3232 MonoError inner_error;
3233 char *strace = mono_string_to_utf8_checked (((MonoException*)exc)->stack_trace, &inner_error);
3234 if (is_ok (&inner_error)) {
3235 char *tmp;
3236 tmp = g_strdup_printf ("%s\nException Rethrown at:\n", strace);
3237 g_free (strace);
3238 MONO_OBJECT_SETREF (((MonoException*)exc), stack_trace, mono_string_new (domain, tmp));
3239 g_free (tmp);
3240 } else
3241 mono_error_cleanup (&inner_error); /* no stack trace, but at least throw the original exception */
3242 }
3243 mono_set_pending_exception ((MonoException*)exc);
3244 }
3245
3246 mono_method_return_message_restore (method, params, out_args, &error);
3247 mono_error_set_pending_exception (&error);
3248 return res;
3249 }
3250
3251 #ifndef DISABLE_JIT
3252
3253 void
3254 mono_mb_emit_restore_result (MonoMethodBuilder *mb, MonoType *return_type)
3255 {
3256 MonoType *t = mono_type_get_underlying_type (return_type);
3257
3258 if (return_type->byref)
3259 return_type = &mono_defaults.int_class->byval_arg;
3260
3261 switch (t->type) {
3262 case MONO_TYPE_VOID:
3263 g_assert_not_reached ();
3264 break;
3265 case MONO_TYPE_PTR:
3266 case MONO_TYPE_STRING:
3267 case MONO_TYPE_CLASS:
3268 case MONO_TYPE_OBJECT:
3269 case MONO_TYPE_ARRAY:
3270 case MONO_TYPE_SZARRAY:
3271 /* nothing to do */
3272 break;
3273 case MONO_TYPE_U1:
3274 case MONO_TYPE_BOOLEAN:
3275 case MONO_TYPE_I1:
3276 case MONO_TYPE_U2:
3277 case MONO_TYPE_CHAR:
3278 case MONO_TYPE_I2:
3279 case MONO_TYPE_I:
3280 case MONO_TYPE_U:
3281 case MONO_TYPE_I4:
3282 case MONO_TYPE_U4:
3283 case MONO_TYPE_U8:
3284 case MONO_TYPE_I8:
3285 case MONO_TYPE_R4:
3286 case MONO_TYPE_R8:
3287 mono_mb_emit_op (mb, CEE_UNBOX, mono_class_from_mono_type (return_type));
3288 mono_mb_emit_byte (mb, mono_type_to_ldind (return_type));
3289 break;
3290 case MONO_TYPE_GENERICINST:
3291 if (!mono_type_generic_inst_is_valuetype (t))
3292 break;
3293 /* fall through */
3294 case MONO_TYPE_VALUETYPE: {
3295 MonoClass *klass = mono_class_from_mono_type (return_type);
3296 mono_mb_emit_op (mb, CEE_UNBOX, klass);
3297 mono_mb_emit_op (mb, CEE_LDOBJ, klass);
3298 break;
3299 }
3300 case MONO_TYPE_VAR:
3301 case MONO_TYPE_MVAR: {
3302 MonoClass *klass = mono_class_from_mono_type (return_type);
3303 mono_mb_emit_op (mb, CEE_UNBOX_ANY, klass);
3304 break;
3305 }
3306 default:
3307 g_warning ("type 0x%x not handled", return_type->type);
3308 g_assert_not_reached ();
3309 }
3310
3311 mono_mb_emit_byte (mb, CEE_RET);
3312 }
3313
3314 #endif /* DISABLE_JIT */
3315
3316 MonoMethod *
3317 mono_marshal_get_delegate_end_invoke (MonoMethod *method)
3318 {
3319 MonoMethodSignature *sig;
3320 MonoMethodBuilder *mb;
3321 MonoMethod *res;
3322 GHashTable *cache;
3323 int params_var;
3324 char *name;
3325 MonoGenericContext *ctx = NULL;
3326 MonoMethod *orig_method = NULL;
3327
3328 g_assert (method && method->klass->parent == mono_defaults.multicastdelegate_class &&
3329 !strcmp (method->name, "EndInvoke"));
3330
3331 /*
3332 * For generic delegates, create a generic wrapper, and returns an instance to help AOT.
3333 */
3334 if (method->is_inflated) {
3335 orig_method = method;
3336 ctx = &((MonoMethodInflated*)method)->context;
3337 method = ((MonoMethodInflated*)method)->declaring;
3338 }
3339
3340 sig = mono_signature_no_pinvoke (method);
3341
3342 /*
3343 * Check cache
3344 */
3345 if (ctx) {
3346 cache = get_cache (&((MonoMethodInflated*)orig_method)->owner->wrapper_caches.delegate_end_invoke_cache, mono_aligned_addr_hash, NULL);
3347 res = check_generic_delegate_wrapper_cache (cache, orig_method, method, ctx);
3348 if (res)
3349 return res;
3350 } else {
3351 cache = get_cache (&method->klass->image->wrapper_caches.delegate_end_invoke_cache,
3352 (GHashFunc)mono_signature_hash,
3353 (GCompareFunc)mono_metadata_signature_equal);
3354 if ((res = mono_marshal_find_in_cache (cache, sig)))
3355 return res;
3356 }
3357
3358 g_assert (sig->hasthis);
3359
3360 name = mono_signature_to_name (sig, "end_invoke");
3361 if (ctx)
3362 mb = mono_mb_new (method->klass, name, MONO_WRAPPER_DELEGATE_END_INVOKE);
3363 else
3364 mb = mono_mb_new (get_wrapper_target_class (method->klass->image), name, MONO_WRAPPER_DELEGATE_END_INVOKE);
3365 g_free (name);
3366
3367 #ifndef DISABLE_JIT
3368 params_var = mono_mb_emit_save_args (mb, sig, FALSE);
3369
3370 mono_mb_emit_ldarg (mb, 0);
3371 mono_mb_emit_ldloc (mb, params_var);
3372 mono_mb_emit_icall (mb, mono_delegate_end_invoke);
3373
3374 if (sig->ret->type == MONO_TYPE_VOID) {
3375 mono_mb_emit_byte (mb, CEE_POP);
3376 mono_mb_emit_byte (mb, CEE_RET);
3377 } else
3378 mono_mb_emit_restore_result (mb, sig->ret);
3379 #endif
3380
3381 if (ctx) {
3382 MonoMethod *def;
3383 def = mono_mb_create_and_cache (cache, method->klass, mb, sig, sig->param_count + 16);
3384 res = cache_generic_delegate_wrapper (cache, orig_method, def, ctx);
3385 } else {
3386 res = mono_mb_create_and_cache (cache, sig,
3387 mb, sig, sig->param_count + 16);
3388 }
3389 mono_mb_free (mb);
3390
3391 return res;
3392 }
3393
3394 typedef struct
3395 {
3396 MonoMethodSignature *sig;
3397 gpointer pointer;
3398 } SignaturePointerPair;
3399
3400 static guint
3401 signature_pointer_pair_hash (gconstpointer data)
3402 {
3403 SignaturePointerPair *pair = (SignaturePointerPair*)data;
3404
3405 return mono_signature_hash (pair->sig) ^ mono_aligned_addr_hash (pair->pointer);
3406 }
3407
3408 static gboolean
3409 signature_pointer_pair_equal (gconstpointer data1, gconstpointer data2)
3410 {
3411 SignaturePointerPair *pair1 = (SignaturePointerPair*) data1, *pair2 = (SignaturePointerPair*) data2;
3412 return mono_metadata_signature_equal (pair1->sig, pair2->sig) && (pair1->pointer == pair2->pointer);
3413 }
3414
3415 static gboolean
3416 signature_pointer_pair_matches_pointer (gpointer key, gpointer value, gpointer user_data)
3417 {
3418 SignaturePointerPair *pair = (SignaturePointerPair*)key;
3419
3420 return pair->pointer == user_data;
3421 }
3422
3423 static void
3424 free_signature_pointer_pair (SignaturePointerPair *pair)
3425 {
3426 g_free (pair);
3427 }
3428
3429 MonoMethod *
3430 mono_marshal_get_delegate_invoke_internal (MonoMethod *method, gboolean callvirt, gboolean static_method_with_first_arg_bound, MonoMethod *target_method)
3431 {
3432 MonoMethodSignature *sig, *static_sig, *invoke_sig;
3433 int i;
3434 MonoMethodBuilder *mb;
3435 MonoMethod *res;
3436 GHashTable *cache;
3437 gpointer cache_key = NULL;
3438 SignaturePointerPair key = { NULL, NULL };
3439 SignaturePointerPair *new_key;
3440 int local_i, local_len, local_delegates, local_d, local_target, local_res;
3441 int pos0, pos1, pos2;
3442 char *name;
3443 MonoClass *target_class = NULL;
3444 gboolean closed_over_null = FALSE;
3445 MonoGenericContext *ctx = NULL;
3446 MonoGenericContainer *container = NULL;
3447 MonoMethod *orig_method = method;
3448 WrapperInfo *info;
3449 WrapperSubtype subtype = WRAPPER_SUBTYPE_NONE;
3450 gboolean found;
3451 gboolean void_ret;
3452
3453 g_assert (method && method->klass->parent == mono_defaults.multicastdelegate_class &&
3454 !strcmp (method->name, "Invoke"));
3455
3456 invoke_sig = sig = mono_signature_no_pinvoke (method);
3457
3458 /*
3459 * If the delegate target is null, and the target method is not static, a virtual
3460 * call is made to that method with the first delegate argument as this. This is
3461 * a non-documented .NET feature.
3462 */
3463 if (callvirt) {
3464 subtype = WRAPPER_SUBTYPE_DELEGATE_INVOKE_VIRTUAL;
3465 if (target_method->is_inflated) {
3466 MonoError error;
3467 MonoType *target_type;
3468
3469 g_assert (method->signature->hasthis);
3470 target_type = mono_class_inflate_generic_type_checked (method->signature->params [0],
3471 mono_method_get_context (method), &error);
3472 mono_error_assert_ok (&error); /* FIXME don't swallow the error */
3473 target_class = mono_class_from_mono_type (target_type);
3474 } else {
3475 target_class = target_method->klass;
3476 }
3477
3478 closed_over_null = sig->param_count == mono_method_signature (target_method)->param_count;
3479 }
3480
3481 if (static_method_with_first_arg_bound) {
3482 subtype = WRAPPER_SUBTYPE_DELEGATE_INVOKE_BOUND;
3483 g_assert (!callvirt);
3484 invoke_sig = mono_method_signature (target_method);
3485 }
3486
3487 /*
3488 * For generic delegates, create a generic wrapper, and return an instance to help AOT.
3489 */
3490 if (method->is_inflated && subtype == WRAPPER_SUBTYPE_NONE) {
3491 ctx = &((MonoMethodInflated*)method)->context;
3492 method = ((MonoMethodInflated*)method)->declaring;
3493
3494 container = mono_method_get_generic_container (method);
3495 if (!container)
3496 container = mono_class_try_get_generic_container (method->klass); //FIXME is this a case of a try?
3497 g_assert (container);
3498
3499 invoke_sig = sig = mono_signature_no_pinvoke (method);
3500 }
3501
3502 /*
3503 * Check cache
3504 */
3505 if (ctx) {
3506 cache = get_cache (&((MonoMethodInflated*)orig_method)->owner->wrapper_caches.delegate_invoke_cache, mono_aligned_addr_hash, NULL);
3507 res = check_generic_delegate_wrapper_cache (cache, orig_method, method, ctx);
3508 if (res)
3509 return res;
3510 cache_key = method->klass;
3511 } else if (static_method_with_first_arg_bound) {
3512 cache = get_cache (&method->klass->image->delegate_bound_static_invoke_cache,
3513 (GHashFunc)mono_signature_hash,
3514 (GCompareFunc)mono_metadata_signature_equal);
3515 /*
3516 * The wrapper is based on sig+invoke_sig, but sig can be derived from invoke_sig.
3517 */
3518 res = mono_marshal_find_in_cache (cache, invoke_sig);
3519 if (res)
3520 return res;
3521 cache_key = invoke_sig;
3522 } else if (callvirt) {
3523 GHashTable **cache_ptr;
3524
3525 cache_ptr = &mono_method_get_wrapper_cache (method)->delegate_abstract_invoke_cache;
3526
3527 /* We need to cache the signature+method pair */
3528 mono_marshal_lock ();
3529 if (!*cache_ptr)
3530 *cache_ptr = g_hash_table_new_full (signature_pointer_pair_hash, (GEqualFunc)signature_pointer_pair_equal, (GDestroyNotify)free_signature_pointer_pair, NULL);
3531 cache = *cache_ptr;
3532 key.sig = invoke_sig;
3533 key.pointer = target_method;
3534 res = (MonoMethod *)g_hash_table_lookup (cache, &key);
3535 mono_marshal_unlock ();
3536 if (res)
3537 return res;
3538 } else {
3539 // Inflated methods should not be in this cache because it's not stored on the imageset.
3540 g_assert (!method->is_inflated);
3541 cache = get_cache (&method->klass->image->wrapper_caches.delegate_invoke_cache,
3542 (GHashFunc)mono_signature_hash,
3543 (GCompareFunc)mono_metadata_signature_equal);
3544 res = mono_marshal_find_in_cache (cache, sig);
3545 if (res)
3546 return res;
3547 cache_key = sig;
3548 }
3549
3550 static_sig = mono_metadata_signature_dup_full (method->klass->image, sig);
3551 static_sig->hasthis = 0;
3552 if (!static_method_with_first_arg_bound)
3553 invoke_sig = static_sig;
3554
3555 if (static_method_with_first_arg_bound)
3556 name = mono_signature_to_name (invoke_sig, "invoke_bound");
3557 else if (closed_over_null)
3558 name = mono_signature_to_name (invoke_sig, "invoke_closed_over_null");
3559 else if (callvirt)
3560 name = mono_signature_to_name (invoke_sig, "invoke_callvirt");
3561 else
3562 name = mono_signature_to_name (invoke_sig, "invoke");
3563 if (ctx)
3564 mb = mono_mb_new (method->klass, name, MONO_WRAPPER_DELEGATE_INVOKE);
3565 else
3566 mb = mono_mb_new (get_wrapper_target_class (method->klass->image), name, MONO_WRAPPER_DELEGATE_INVOKE);
3567 g_free (name);
3568
3569 #ifndef DISABLE_JIT
3570 void_ret = sig->ret->type == MONO_TYPE_VOID && !method->string_ctor;
3571
3572 /* allocate local 0 (object) */
3573 local_i = mono_mb_add_local (mb, &mono_defaults.int32_class->byval_arg);
3574 local_len = mono_mb_add_local (mb, &mono_defaults.int32_class->byval_arg);
3575 local_delegates = mono_mb_add_local (mb, &mono_defaults.array_class->byval_arg);
3576 local_d = mono_mb_add_local (mb, &mono_defaults.multicastdelegate_class->byval_arg);
3577 local_target = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
3578
3579 if (!void_ret)
3580 local_res = mono_mb_add_local (mb, &mono_class_from_mono_type (sig->ret)->byval_arg);
3581
3582 g_assert (sig->hasthis);
3583
3584 /*
3585 * {type: sig->ret} res;
3586 * if (delegates == null) {
3587 * return this.<target> ( args .. );
3588 * } else {
3589 * int i = 0, len = this.delegates.Length;
3590 * do {
3591 * res = this.delegates [i].Invoke ( args .. );
3592 * } while (++i < len);
3593 * return res;
3594 * }
3595 */
3596
3597 /* this wrapper can be used in unmanaged-managed transitions */
3598 emit_thread_interrupt_checkpoint (mb);
3599
3600 /* delegates = this.delegates */
3601 mono_mb_emit_ldarg (mb, 0);
3602 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoMulticastDelegate, delegates));
3603 mono_mb_emit_byte (mb, CEE_LDIND_REF);
3604 mono_mb_emit_stloc (mb, local_delegates);
3605
3606 /* if (delegates == null) */
3607 mono_mb_emit_ldloc (mb, local_delegates);
3608 pos2 = mono_mb_emit_branch (mb, CEE_BRTRUE);
3609
3610 /* return target.<target_method|method_ptr> ( args .. ); */
3611
3612 /* target = d.target; */
3613 mono_mb_emit_ldarg (mb, 0);
3614 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoDelegate, target));
3615 mono_mb_emit_byte (mb, CEE_LDIND_REF);
3616 mono_mb_emit_stloc (mb, local_target);
3617
3618 /*static methods with bound first arg can have null target and still be bound*/
3619 if (!static_method_with_first_arg_bound) {
3620 /* if target != null */
3621 mono_mb_emit_ldloc (mb, local_target);
3622 pos0 = mono_mb_emit_branch (mb, CEE_BRFALSE);
3623
3624 /* then call this->method_ptr nonstatic */
3625 if (callvirt) {
3626 // FIXME:
3627 mono_mb_emit_exception_full (mb, "System", "NotImplementedException", "");
3628 } else {
3629 mono_mb_emit_ldloc (mb, local_target);
3630 for (i = 0; i < sig->param_count; ++i)
3631 mono_mb_emit_ldarg (mb, i + 1);
3632 mono_mb_emit_ldarg (mb, 0);
3633 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoDelegate, extra_arg));
3634 mono_mb_emit_byte (mb, CEE_LDIND_I);
3635 mono_mb_emit_ldarg (mb, 0);
3636 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoDelegate, method_ptr));
3637 mono_mb_emit_byte (mb, CEE_LDIND_I);
3638 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
3639 mono_mb_emit_op (mb, CEE_MONO_CALLI_EXTRA_ARG, sig);
3640 mono_mb_emit_byte (mb, CEE_RET);
3641 }
3642
3643 /* else [target == null] call this->method_ptr static */
3644 mono_mb_patch_branch (mb, pos0);
3645 }
3646
3647 if (callvirt) {
3648 if (!closed_over_null) {
3649 if (target_class->valuetype) {
3650 mono_mb_emit_ldarg (mb, 1);
3651 for (i = 1; i < sig->param_count; ++i)
3652 mono_mb_emit_ldarg (mb, i + 1);
3653 mono_mb_emit_op (mb, CEE_CALL, target_method);
3654 } else {
3655 mono_mb_emit_ldarg (mb, 1);
3656 mono_mb_emit_op (mb, CEE_CASTCLASS, target_class);
3657 for (i = 1; i < sig->param_count; ++i)
3658 mono_mb_emit_ldarg (mb, i + 1);
3659 mono_mb_emit_op (mb, CEE_CALLVIRT, target_method);
3660 }
3661 } else {
3662 mono_mb_emit_byte (mb, CEE_LDNULL);
3663 for (i = 0; i < sig->param_count; ++i)
3664 mono_mb_emit_ldarg (mb, i + 1);
3665 mono_mb_emit_op (mb, CEE_CALL, target_method);
3666 }
3667 } else {
3668 if (static_method_with_first_arg_bound) {
3669 mono_mb_emit_ldloc (mb, local_target);
3670 if (!MONO_TYPE_IS_REFERENCE (invoke_sig->params[0]))
3671 mono_mb_emit_op (mb, CEE_UNBOX_ANY, mono_class_from_mono_type (invoke_sig->params[0]));
3672 }
3673 for (i = 0; i < sig->param_count; ++i)
3674 mono_mb_emit_ldarg (mb, i + 1);
3675 mono_mb_emit_ldarg (mb, 0);
3676 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoDelegate, extra_arg));
3677 mono_mb_emit_byte (mb, CEE_LDIND_I);
3678 mono_mb_emit_ldarg (mb, 0);
3679 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoDelegate, method_ptr));
3680 mono_mb_emit_byte (mb, CEE_LDIND_I);
3681 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
3682 mono_mb_emit_op (mb, CEE_MONO_CALLI_EXTRA_ARG, invoke_sig);
3683 }
3684
3685 mono_mb_emit_byte (mb, CEE_RET);
3686
3687 /* else [delegates != null] */
3688 mono_mb_patch_branch (mb, pos2);
3689
3690 /* len = delegates.Length; */
3691 mono_mb_emit_ldloc (mb, local_delegates);
3692 mono_mb_emit_byte (mb, CEE_LDLEN);
3693 mono_mb_emit_byte (mb, CEE_CONV_I4);
3694 mono_mb_emit_stloc (mb, local_len);
3695
3696 /* i = 0; */
3697 mono_mb_emit_icon (mb, 0);
3698 mono_mb_emit_stloc (mb, local_i);
3699
3700 pos1 = mono_mb_get_label (mb);
3701
3702 /* d = delegates [i]; */
3703 mono_mb_emit_ldloc (mb, local_delegates);
3704 mono_mb_emit_ldloc (mb, local_i);
3705 mono_mb_emit_byte (mb, CEE_LDELEM_REF);
3706 mono_mb_emit_stloc (mb, local_d);
3707
3708 /* res = d.Invoke ( args .. ); */
3709 mono_mb_emit_ldloc (mb, local_d);
3710 for (i = 0; i < sig->param_count; i++)
3711 mono_mb_emit_ldarg (mb, i + 1);
3712 if (!ctx) {
3713 mono_mb_emit_op (mb, CEE_CALLVIRT, method);
3714 } else {
3715 MonoError error;
3716 mono_mb_emit_op (mb, CEE_CALLVIRT, mono_class_inflate_generic_method_checked (method, &container->context, &error));
3717 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
3718 }
3719 if (!void_ret)
3720 mono_mb_emit_stloc (mb, local_res);
3721
3722 /* i += 1 */
3723 mono_mb_emit_add_to_local (mb, local_i, 1);
3724
3725 /* i < l */
3726 mono_mb_emit_ldloc (mb, local_i);
3727 mono_mb_emit_ldloc (mb, local_len);
3728 mono_mb_emit_branch_label (mb, CEE_BLT, pos1);
3729
3730 /* return res */
3731 if (!void_ret)
3732 mono_mb_emit_ldloc (mb, local_res);
3733 mono_mb_emit_byte (mb, CEE_RET);
3734
3735 mb->skip_visibility = 1;
3736 #endif /* DISABLE_JIT */
3737
3738 info = mono_wrapper_info_create (mb, subtype);
3739 info->d.delegate_invoke.method = method;
3740
3741 if (ctx) {
3742 MonoMethod *def;
3743
3744 def = mono_mb_create_and_cache_full (cache, cache_key, mb, sig, sig->param_count + 16, info, NULL);
3745 res = cache_generic_delegate_wrapper (cache, orig_method, def, ctx);
3746 } else if (callvirt) {
3747 new_key = g_new0 (SignaturePointerPair, 1);
3748 *new_key = key;
3749
3750 res = mono_mb_create_and_cache_full (cache, new_key, mb, sig, sig->param_count + 16, info, &found);
3751 if (found)
3752 g_free (new_key);
3753 } else {
3754 res = mono_mb_create_and_cache_full (cache, cache_key, mb, sig, sig->param_count + 16, info, NULL);
3755 }
3756 mono_mb_free (mb);
3757
3758 /* mono_method_print_code (res); */
3759
3760 return res;
3761 }
3762
3763 /*
3764 * the returned method invokes all methods in a multicast delegate.
3765 */
3766 MonoMethod *
3767 mono_marshal_get_delegate_invoke (MonoMethod *method, MonoDelegate *del)
3768 {
3769 gboolean callvirt = FALSE;
3770 gboolean static_method_with_first_arg_bound = FALSE;
3771 MonoMethod *target_method = NULL;
3772 MonoMethodSignature *sig;
3773
3774 sig = mono_signature_no_pinvoke (method);
3775
3776 if (del && !del->target && del->method && mono_method_signature (del->method)->hasthis) {
3777 callvirt = TRUE;
3778 target_method = del->method;
3779 }
3780
3781 if (del && del->method && mono_method_signature (del->method)->param_count == sig->param_count + 1 && (del->method->flags & METHOD_ATTRIBUTE_STATIC)) {
3782 static_method_with_first_arg_bound = TRUE;
3783 target_method = del->method;
3784 }
3785
3786 return mono_marshal_get_delegate_invoke_internal (method, callvirt, static_method_with_first_arg_bound, target_method);
3787 }
3788
3789 typedef struct {
3790 MonoMethodSignature *ctor_sig;
3791 MonoMethodSignature *sig;
3792 } CtorSigPair;
3793
3794 /* protected by the marshal lock, contains CtorSigPair pointers */
3795 static GSList *strsig_list = NULL;
3796
3797 static MonoMethodSignature *
3798 lookup_string_ctor_signature (MonoMethodSignature *sig)
3799 {
3800 MonoMethodSignature *callsig;
3801 CtorSigPair *cs;
3802 GSList *item;
3803
3804 mono_marshal_lock ();
3805 callsig = NULL;
3806 for (item = strsig_list; item; item = item->next) {
3807 cs = (CtorSigPair *)item->data;
3808 /* mono_metadata_signature_equal () is safe to call with the marshal lock
3809 * because it is lock-free.
3810 */
3811 if (mono_metadata_signature_equal (sig, cs->ctor_sig)) {
3812 callsig = cs->sig;
3813 break;
3814 }
3815 }
3816 mono_marshal_unlock ();
3817 return callsig;
3818 }
3819
3820 static MonoMethodSignature *
3821 add_string_ctor_signature (MonoMethod *method)
3822 {
3823 MonoMethodSignature *callsig;
3824 CtorSigPair *cs;
3825
3826 callsig = mono_metadata_signature_dup_full (method->klass->image, mono_method_signature (method));
3827 callsig->ret = &mono_defaults.string_class->byval_arg;
3828 cs = g_new (CtorSigPair, 1);
3829 cs->sig = callsig;
3830 cs->ctor_sig = mono_method_signature (method);
3831
3832 mono_marshal_lock ();
3833 strsig_list = g_slist_prepend (strsig_list, cs);
3834 mono_marshal_unlock ();
3835 return callsig;
3836 }
3837
3838 /*
3839 * mono_marshal_get_string_ctor_signature:
3840 *
3841 * Return the modified signature used by string ctors (they return the newly created
3842 * string).
3843 */
3844 MonoMethodSignature*
3845 mono_marshal_get_string_ctor_signature (MonoMethod *method)
3846 {
3847 MonoMethodSignature *sig = lookup_string_ctor_signature (mono_method_signature (method));
3848 if (!sig)
3849 sig = add_string_ctor_signature (method);
3850
3851 return sig;
3852 }
3853
3854 static MonoType*
3855 get_runtime_invoke_type (MonoType *t, gboolean ret)
3856 {
3857 if (t->byref) {
3858 if (t->type == MONO_TYPE_GENERICINST && mono_class_is_nullable (mono_class_from_mono_type (t)))
3859 return t;
3860 /* Can't share this with 'I' as that needs another indirection */
3861 return &mono_defaults.int_class->this_arg;
3862 }
3863
3864 if (MONO_TYPE_IS_REFERENCE (t))
3865 return &mono_defaults.object_class->byval_arg;
3866
3867 if (ret)
3868 /* The result needs to be boxed */
3869 return t;
3870
3871 handle_enum:
3872 switch (t->type) {
3873 /* Can't share these as the argument needs to be loaded using sign/zero extension */
3874 /*
3875 case MONO_TYPE_U1:
3876 return &mono_defaults.sbyte_class->byval_arg;
3877 case MONO_TYPE_U2:
3878 return &mono_defaults.int16_class->byval_arg;
3879 case MONO_TYPE_U4:
3880 return &mono_defaults.int32_class->byval_arg;
3881 */
3882 case MONO_TYPE_U8:
3883 return &mono_defaults.int64_class->byval_arg;
3884 case MONO_TYPE_BOOLEAN:
3885 return &mono_defaults.byte_class->byval_arg;
3886 case MONO_TYPE_CHAR:
3887 return &mono_defaults.uint16_class->byval_arg;
3888 case MONO_TYPE_U:
3889 return &mono_defaults.int_class->byval_arg;
3890 case MONO_TYPE_VALUETYPE:
3891 if (t->data.klass->enumtype) {
3892 t = mono_class_enum_basetype (t->data.klass);
3893 goto handle_enum;
3894 }
3895 return t;
3896 default:
3897 return t;
3898 }
3899 }
3900
3901 /*
3902 * mono_marshal_get_runtime_invoke_sig:
3903 *
3904 * Return a common signature used for sharing runtime invoke wrappers.
3905 */
3906 static MonoMethodSignature*
3907 mono_marshal_get_runtime_invoke_sig (MonoMethodSignature *sig)
3908 {
3909 MonoMethodSignature *res = mono_metadata_signature_dup (sig);
3910 int i;
3911
3912 res->generic_param_count = 0;
3913 res->ret = get_runtime_invoke_type (sig->ret, TRUE);
3914 for (i = 0; i < res->param_count; ++i)
3915 res->params [i] = get_runtime_invoke_type (sig->params [i], FALSE);
3916
3917 return res;
3918 }
3919
3920 static gboolean
3921 runtime_invoke_signature_equal (MonoMethodSignature *sig1, MonoMethodSignature *sig2)
3922 {
3923 /* Can't share wrappers which return a vtype since it needs to be boxed */
3924 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))
3925 return FALSE;
3926 else
3927 return mono_metadata_signature_equal (sig1, sig2);
3928 }
3929
3930 #ifndef DISABLE_JIT
3931
3932 /*
3933 * emit_invoke_call:
3934 *
3935 * Emit the call to the wrapper method from a runtime invoke wrapper.
3936 */
3937 static void
3938 emit_invoke_call (MonoMethodBuilder *mb, MonoMethod *method,
3939 MonoMethodSignature *sig, MonoMethodSignature *callsig,
3940 int loc_res,
3941 gboolean virtual_, gboolean need_direct_wrapper)
3942 {
3943 static MonoString *string_dummy = NULL;
3944 int i;
3945 int *tmp_nullable_locals;
3946 gboolean void_ret = FALSE;
3947 gboolean string_ctor = method && method->string_ctor;
3948
3949 /* to make it work with our special string constructors */
3950 if (!string_dummy) {
3951 MONO_GC_REGISTER_ROOT_SINGLE (string_dummy, MONO_ROOT_SOURCE_MARSHAL, "dummy marshal string");
3952 string_dummy = mono_string_new_wrapper ("dummy");
3953 }
3954
3955 if (virtual_) {
3956 g_assert (sig->hasthis);
3957 g_assert (method->flags & METHOD_ATTRIBUTE_VIRTUAL);
3958 }
3959
3960 if (sig->hasthis) {
3961 if (string_ctor) {
3962 if (mono_gc_is_moving ()) {
3963 mono_mb_emit_ptr (mb, &string_dummy);
3964 mono_mb_emit_byte (mb, CEE_LDIND_REF);
3965 } else {
3966 mono_mb_emit_ptr (mb, string_dummy);
3967 }
3968 } else {
3969 mono_mb_emit_ldarg (mb, 0);
3970 }
3971 }
3972
3973 tmp_nullable_locals = g_new0 (int, sig->param_count);
3974
3975 for (i = 0; i < sig->param_count; i++) {
3976 MonoType *t = sig->params [i];
3977 int type;
3978
3979 mono_mb_emit_ldarg (mb, 1);
3980 if (i) {
3981 mono_mb_emit_icon (mb, sizeof (gpointer) * i);
3982 mono_mb_emit_byte (mb, CEE_ADD);
3983 }
3984
3985 if (t->byref) {
3986 mono_mb_emit_byte (mb, CEE_LDIND_I);
3987 /* A Nullable<T> type don't have a boxed form, it's either null or a boxed T.
3988 * So to make this work we unbox it to a local variablee and push a reference to that.
3989 */
3990 if (t->type == MONO_TYPE_GENERICINST && mono_class_is_nullable (mono_class_from_mono_type (t))) {
3991 tmp_nullable_locals [i] = mono_mb_add_local (mb, &mono_class_from_mono_type (t)->byval_arg);
3992
3993 mono_mb_emit_op (mb, CEE_UNBOX_ANY, mono_class_from_mono_type (t));
3994 mono_mb_emit_stloc (mb, tmp_nullable_locals [i]);
3995 mono_mb_emit_ldloc_addr (mb, tmp_nullable_locals [i]);
3996 }
3997 continue;
3998 }
3999
4000 /*FIXME 'this doesn't handle generic enums. Shouldn't we?*/
4001 type = sig->params [i]->type;
4002 handle_enum:
4003 switch (type) {
4004 case MONO_TYPE_I1:
4005 case MONO_TYPE_BOOLEAN:
4006 case MONO_TYPE_U1:
4007 case MONO_TYPE_I2:
4008 case MONO_TYPE_U2:
4009 case MONO_TYPE_CHAR:
4010 case MONO_TYPE_I:
4011 case MONO_TYPE_U:
4012 case MONO_TYPE_I4:
4013 case MONO_TYPE_U4:
4014 case MONO_TYPE_R4:
4015 case MONO_TYPE_R8:
4016 case MONO_TYPE_I8:
4017 case MONO_TYPE_U8:
4018 mono_mb_emit_byte (mb, CEE_LDIND_I);
4019 mono_mb_emit_byte (mb, mono_type_to_ldind (sig->params [i]));
4020 break;
4021 case MONO_TYPE_STRING:
4022 case MONO_TYPE_CLASS:
4023 case MONO_TYPE_ARRAY:
4024 case MONO_TYPE_PTR:
4025 case MONO_TYPE_SZARRAY:
4026 case MONO_TYPE_OBJECT:
4027 mono_mb_emit_byte (mb, mono_type_to_ldind (sig->params [i]));
4028 break;
4029 case MONO_TYPE_GENERICINST:
4030 if (!mono_type_generic_inst_is_valuetype (sig->params [i])) {
4031 mono_mb_emit_byte (mb, mono_type_to_ldind (sig->params [i]));
4032 break;
4033 }
4034
4035 /* fall through */
4036 case MONO_TYPE_VALUETYPE:
4037 if (type == MONO_TYPE_VALUETYPE && t->data.klass->enumtype) {
4038 type = mono_class_enum_basetype (t->data.klass)->type;
4039 goto handle_enum;
4040 }
4041 mono_mb_emit_byte (mb, CEE_LDIND_I);
4042 if (mono_class_is_nullable (mono_class_from_mono_type (sig->params [i]))) {
4043 /* Need to convert a boxed vtype to an mp to a Nullable struct */
4044 mono_mb_emit_op (mb, CEE_UNBOX, mono_class_from_mono_type (sig->params [i]));
4045 mono_mb_emit_op (mb, CEE_LDOBJ, mono_class_from_mono_type (sig->params [i]));
4046 } else {
4047 mono_mb_emit_op (mb, CEE_LDOBJ, mono_class_from_mono_type (sig->params [i]));
4048 }
4049 break;
4050 default:
4051 g_assert_not_reached ();
4052 }
4053 }
4054
4055 if (virtual_) {
4056 mono_mb_emit_op (mb, CEE_CALLVIRT, method);
4057 } else if (need_direct_wrapper) {
4058 mono_mb_emit_op (mb, CEE_CALL, method);
4059 } else {
4060 mono_mb_emit_ldarg (mb, 3);
4061 mono_mb_emit_calli (mb, callsig);
4062 }
4063
4064 if (sig->ret->byref) {
4065 /* fixme: */
4066 g_assert_not_reached ();
4067 }
4068
4069 switch (sig->ret->type) {
4070 case MONO_TYPE_VOID:
4071 if (!string_ctor)
4072 void_ret = TRUE;
4073 break;
4074 case MONO_TYPE_BOOLEAN:
4075 case MONO_TYPE_CHAR:
4076 case MONO_TYPE_I1:
4077 case MONO_TYPE_U1:
4078 case MONO_TYPE_I2:
4079 case MONO_TYPE_U2:
4080 case MONO_TYPE_I4:
4081 case MONO_TYPE_U4:
4082 case MONO_TYPE_I:
4083 case MONO_TYPE_U:
4084 case MONO_TYPE_R4:
4085 case MONO_TYPE_R8:
4086 case MONO_TYPE_I8:
4087 case MONO_TYPE_U8:
4088 case MONO_TYPE_VALUETYPE:
4089 case MONO_TYPE_TYPEDBYREF:
4090 case MONO_TYPE_GENERICINST:
4091 /* box value types */
4092 mono_mb_emit_op (mb, CEE_BOX, mono_class_from_mono_type (sig->ret));
4093 break;
4094 case MONO_TYPE_STRING:
4095 case MONO_TYPE_CLASS:
4096 case MONO_TYPE_ARRAY:
4097 case MONO_TYPE_SZARRAY:
4098 case MONO_TYPE_OBJECT:
4099 /* nothing to do */
4100 break;
4101 case MONO_TYPE_PTR:
4102 /* The result is an IntPtr */
4103 mono_mb_emit_op (mb, CEE_BOX, mono_defaults.int_class);
4104 break;
4105 default:
4106 g_assert_not_reached ();
4107 }
4108
4109 if (!void_ret)
4110 mono_mb_emit_stloc (mb, loc_res);
4111
4112 /* Convert back nullable-byref arguments */
4113 for (i = 0; i < sig->param_count; i++) {
4114 MonoType *t = sig->params [i];
4115
4116 /*
4117 * Box the result and put it back into the array, the caller will have
4118 * to obtain it from there.
4119 */
4120 if (t->byref && t->type == MONO_TYPE_GENERICINST && mono_class_is_nullable (mono_class_from_mono_type (t))) {
4121 mono_mb_emit_ldarg (mb, 1);
4122 mono_mb_emit_icon (mb, sizeof (gpointer) * i);
4123 mono_mb_emit_byte (mb, CEE_ADD);
4124
4125 mono_mb_emit_ldloc (mb, tmp_nullable_locals [i]);
4126 mono_mb_emit_op (mb, CEE_BOX, mono_class_from_mono_type (t));
4127
4128 mono_mb_emit_byte (mb, CEE_STIND_REF);
4129 }
4130 }
4131
4132 g_free (tmp_nullable_locals);
4133 }
4134
4135 static void
4136 emit_runtime_invoke_body (MonoMethodBuilder *mb, MonoImage *image, MonoMethod *method,
4137 MonoMethodSignature *sig, MonoMethodSignature *callsig,
4138 gboolean virtual_, gboolean need_direct_wrapper)
4139 {
4140 gint32 labels [16];
4141 MonoExceptionClause *clause;
4142 int loc_res, loc_exc;
4143
4144 /* The wrapper looks like this:
4145 *
4146 * <interrupt check>
4147 * if (exc) {
4148 * try {
4149 * return <call>
4150 * } catch (Exception e) {
4151 * *exc = e;
4152 * }
4153 * } else {
4154 * return <call>
4155 * }
4156 */
4157
4158 /* allocate local 0 (object) tmp */
4159 loc_res = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
4160 /* allocate local 1 (object) exc */
4161 loc_exc = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
4162
4163 /* *exc is assumed to be initialized to NULL by the caller */
4164
4165 mono_mb_emit_byte (mb, CEE_LDARG_2);
4166 labels [0] = mono_mb_emit_branch (mb, CEE_BRFALSE);
4167
4168 /*
4169 * if (exc) case
4170 */
4171 labels [1] = mono_mb_get_label (mb);
4172 emit_thread_force_interrupt_checkpoint (mb);
4173 emit_invoke_call (mb, method, sig, callsig, loc_res, virtual_, need_direct_wrapper);
4174
4175 labels [2] = mono_mb_emit_branch (mb, CEE_LEAVE);
4176
4177 /* Add a try clause around the call */
4178 clause = (MonoExceptionClause *)mono_image_alloc0 (image, sizeof (MonoExceptionClause));
4179 clause->flags = MONO_EXCEPTION_CLAUSE_NONE;
4180 clause->data.catch_class = mono_defaults.exception_class;
4181 clause->try_offset = labels [1];
4182 clause->try_len = mono_mb_get_label (mb) - labels [1];
4183
4184 clause->handler_offset = mono_mb_get_label (mb);
4185
4186 /* handler code */
4187 mono_mb_emit_stloc (mb, loc_exc);
4188 mono_mb_emit_byte (mb, CEE_LDARG_2);
4189 mono_mb_emit_ldloc (mb, loc_exc);
4190 mono_mb_emit_byte (mb, CEE_STIND_REF);
4191
4192 mono_mb_emit_branch (mb, CEE_LEAVE);
4193
4194 clause->handler_len = mono_mb_get_pos (mb) - clause->handler_offset;
4195
4196 mono_mb_set_clauses (mb, 1, clause);
4197
4198 mono_mb_patch_branch (mb, labels [2]);
4199 mono_mb_emit_ldloc (mb, loc_res);
4200 mono_mb_emit_byte (mb, CEE_RET);
4201
4202 /*
4203 * if (!exc) case
4204 */
4205 mono_mb_patch_branch (mb, labels [0]);
4206 emit_thread_force_interrupt_checkpoint (mb);
4207 emit_invoke_call (mb, method, sig, callsig, loc_res, virtual_, need_direct_wrapper);
4208
4209 mono_mb_emit_ldloc (mb, 0);
4210 mono_mb_emit_byte (mb, CEE_RET);
4211 }
4212 #endif
4213
4214 /*
4215 * generates IL code for the runtime invoke function
4216 * MonoObject *runtime_invoke (MonoObject *this_obj, void **params, MonoObject **exc, void* method)
4217 *
4218 * we also catch exceptions if exc != null
4219 * If VIRTUAL is TRUE, then METHOD is invoked virtually on THIS. This is useful since
4220 * it means that the compiled code for METHOD does not have to be looked up
4221 * before calling the runtime invoke wrapper. In this case, the wrapper ignores
4222 * its METHOD argument.
4223 */
4224 MonoMethod *
4225 mono_marshal_get_runtime_invoke (MonoMethod *method, gboolean virtual_)
4226 {
4227 MonoMethodSignature *sig, *csig, *callsig;
4228 MonoMethodBuilder *mb;
4229 GHashTable *cache = NULL;
4230 MonoClass *target_klass;
4231 MonoMethod *res = NULL;
4232 static MonoMethodSignature *cctor_signature = NULL;
4233 static MonoMethodSignature *finalize_signature = NULL;
4234 char *name;
4235 const char *param_names [16];
4236 gboolean need_direct_wrapper = FALSE;
4237 WrapperInfo *info;
4238
4239 g_assert (method);
4240
4241 if (!cctor_signature) {
4242 cctor_signature = mono_metadata_signature_alloc (mono_defaults.corlib, 0);
4243 cctor_signature->ret = &mono_defaults.void_class->byval_arg;
4244 }
4245 if (!finalize_signature) {
4246 finalize_signature = mono_metadata_signature_alloc (mono_defaults.corlib, 0);
4247 finalize_signature->ret = &mono_defaults.void_class->byval_arg;
4248 finalize_signature->hasthis = 1;
4249 }
4250
4251 if (virtual_)
4252 need_direct_wrapper = TRUE;
4253
4254 /*
4255 * Use a separate cache indexed by methods to speed things up and to avoid the
4256 * boundless mempool growth caused by the signature_dup stuff below.
4257 */
4258 if (virtual_)
4259 cache = get_cache (&method->klass->image->runtime_invoke_vcall_cache, mono_aligned_addr_hash, NULL);
4260 else
4261 cache = get_cache (&mono_method_get_wrapper_cache (method)->runtime_invoke_direct_cache, mono_aligned_addr_hash, NULL);
4262
4263 res = mono_marshal_find_in_cache (cache, method);
4264 if (res)
4265 return res;
4266
4267 if (method->klass->rank && (method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) &&
4268 (method->iflags & METHOD_IMPL_ATTRIBUTE_NATIVE)) {
4269 /*
4270 * Array Get/Set/Address methods. The JIT implements them using inline code
4271 * so we need to create an invoke wrapper which calls the method directly.
4272 */
4273 need_direct_wrapper = TRUE;
4274 }
4275
4276 if (method->string_ctor) {
4277 callsig = lookup_string_ctor_signature (mono_method_signature (method));
4278 if (!callsig)
4279 callsig = add_string_ctor_signature (method);
4280 /* Can't share this as we push a string as this */
4281 need_direct_wrapper = TRUE;
4282 } else {
4283 if (method_is_dynamic (method))
4284 callsig = mono_metadata_signature_dup_full (method->klass->image, mono_method_signature (method));
4285 else
4286 callsig = mono_method_signature (method);
4287 }
4288
4289 sig = mono_method_signature (method);
4290
4291 target_klass = get_wrapper_target_class (method->klass->image);
4292
4293 /* Try to share wrappers for non-corlib methods with simple signatures */
4294 if (mono_metadata_signature_equal (callsig, cctor_signature)) {
4295 callsig = cctor_signature;
4296 target_klass = mono_defaults.object_class;
4297 } else if (mono_metadata_signature_equal (callsig, finalize_signature)) {
4298 callsig = finalize_signature;
4299 target_klass = mono_defaults.object_class;
4300 }
4301
4302 if (need_direct_wrapper) {
4303 /* Already searched at the start */
4304 } else {
4305 MonoMethodSignature *tmp_sig;
4306
4307 callsig = mono_marshal_get_runtime_invoke_sig (callsig);
4308 GHashTable **cache_table = NULL;
4309
4310 if (method->klass->valuetype && mono_method_signature (method)->hasthis)
4311 cache_table = &mono_method_get_wrapper_cache (method)->runtime_invoke_vtype_cache;
4312 else
4313 cache_table = &mono_method_get_wrapper_cache (method)->runtime_invoke_cache;
4314
4315 cache = get_cache (cache_table, (GHashFunc)mono_signature_hash,
4316 (GCompareFunc)runtime_invoke_signature_equal);
4317
4318 /* from mono_marshal_find_in_cache */
4319 mono_marshal_lock ();
4320 res = (MonoMethod *)g_hash_table_lookup (cache, callsig);
4321 mono_marshal_unlock ();
4322
4323 if (res) {
4324 g_free (callsig);
4325 return res;
4326 }
4327
4328 /* Make a copy of the signature from the image mempool */
4329 tmp_sig = callsig;
4330 callsig = mono_metadata_signature_dup_full (target_klass->image, callsig);
4331 g_free (tmp_sig);
4332 }
4333
4334 csig = mono_metadata_signature_alloc (target_klass->image, 4);
4335
4336 csig->ret = &mono_defaults.object_class->byval_arg;
4337 if (method->klass->valuetype && mono_method_signature (method)->hasthis)
4338 csig->params [0] = get_runtime_invoke_type (&method->klass->this_arg, FALSE);
4339 else
4340 csig->params [0] = &mono_defaults.object_class->byval_arg;
4341 csig->params [1] = &mono_defaults.int_class->byval_arg;
4342 csig->params [2] = &mono_defaults.int_class->byval_arg;
4343 csig->params [3] = &mono_defaults.int_class->byval_arg;
4344 csig->pinvoke = 1;
4345 #if TARGET_WIN32
4346 /* This is called from runtime code so it has to be cdecl */
4347 csig->call_convention = MONO_CALL_C;
4348 #endif
4349
4350 name = mono_signature_to_name (callsig, virtual_ ? "runtime_invoke_virtual" : "runtime_invoke");
4351 mb = mono_mb_new (target_klass, name, MONO_WRAPPER_RUNTIME_INVOKE);
4352 g_free (name);
4353
4354 #ifndef DISABLE_JIT
4355 param_names [0] = "this";
4356 param_names [1] = "params";
4357 param_names [2] = "exc";
4358 param_names [3] = "method";
4359 mono_mb_set_param_names (mb, param_names);
4360
4361 emit_runtime_invoke_body (mb, target_klass->image, method, sig, callsig, virtual_, need_direct_wrapper);
4362 #endif
4363
4364 if (need_direct_wrapper) {
4365 #ifndef DISABLE_JIT
4366 mb->skip_visibility = 1;
4367 #endif
4368 info = mono_wrapper_info_create (mb, virtual_ ? WRAPPER_SUBTYPE_RUNTIME_INVOKE_VIRTUAL : WRAPPER_SUBTYPE_RUNTIME_INVOKE_DIRECT);
4369 info->d.runtime_invoke.method = method;
4370 res = mono_mb_create_and_cache_full (cache, method, mb, csig, sig->param_count + 16, info, NULL);
4371 } else {
4372 /* taken from mono_mb_create_and_cache */
4373 mono_marshal_lock ();
4374 res = (MonoMethod *)g_hash_table_lookup (cache, callsig);
4375 mono_marshal_unlock ();
4376
4377 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_RUNTIME_INVOKE_NORMAL);
4378 info->d.runtime_invoke.sig = callsig;
4379
4380 /* Somebody may have created it before us */
4381 if (!res) {
4382 MonoMethod *newm;
4383 newm = mono_mb_create (mb, csig, sig->param_count + 16, info);
4384
4385 mono_marshal_lock ();
4386 res = (MonoMethod *)g_hash_table_lookup (cache, callsig);
4387 if (!res) {
4388 GHashTable *direct_cache;
4389 res = newm;
4390 g_hash_table_insert (cache, callsig, res);
4391 /* Can't insert it into wrapper_hash since the key is a signature */
4392 direct_cache = mono_method_get_wrapper_cache (method)->runtime_invoke_direct_cache;
4393
4394 g_hash_table_insert (direct_cache, method, res);
4395 } else {
4396 mono_free_method (newm);
4397 }
4398 mono_marshal_unlock ();
4399 }
4400
4401 /* end mono_mb_create_and_cache */
4402 }
4403
4404 mono_mb_free (mb);
4405
4406 return res;
4407 }
4408
4409 /*
4410 * mono_marshal_get_runtime_invoke_dynamic:
4411 *
4412 * Return a method which can be used to invoke managed methods from native code
4413 * dynamically.
4414 * The signature of the returned method is given by RuntimeInvokeDynamicFunction:
4415 * void runtime_invoke (void *args, MonoObject **exc, void *compiled_method)
4416 * ARGS should point to an architecture specific structure containing
4417 * the arguments and space for the return value.
4418 * The other arguments are the same as for runtime_invoke (), except that
4419 * ARGS should contain the this argument too.
4420 * This wrapper serves the same purpose as the runtime-invoke wrappers, but there
4421 * is only one copy of it, which is useful in full-aot.
4422 */
4423 MonoMethod*
4424 mono_marshal_get_runtime_invoke_dynamic (void)
4425 {
4426 static MonoMethod *method;
4427 MonoMethodSignature *csig;
4428 MonoExceptionClause *clause;
4429 MonoMethodBuilder *mb;
4430 int pos;
4431 char *name;
4432 WrapperInfo *info;
4433
4434 if (method)
4435 return method;
4436
4437 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 4);
4438
4439 csig->ret = &mono_defaults.void_class->byval_arg;
4440 csig->params [0] = &mono_defaults.int_class->byval_arg;
4441 csig->params [1] = &mono_defaults.int_class->byval_arg;
4442 csig->params [2] = &mono_defaults.int_class->byval_arg;
4443 csig->params [3] = &mono_defaults.int_class->byval_arg;
4444
4445 name = g_strdup ("runtime_invoke_dynamic");
4446 mb = mono_mb_new (mono_defaults.object_class, name, MONO_WRAPPER_RUNTIME_INVOKE);
4447 g_free (name);
4448
4449 #ifndef DISABLE_JIT
4450 /* allocate local 0 (object) tmp */
4451 mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
4452 /* allocate local 1 (object) exc */
4453 mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
4454
4455 /* cond set *exc to null */
4456 mono_mb_emit_byte (mb, CEE_LDARG_1);
4457 mono_mb_emit_byte (mb, CEE_BRFALSE_S);
4458 mono_mb_emit_byte (mb, 3);
4459 mono_mb_emit_byte (mb, CEE_LDARG_1);
4460 mono_mb_emit_byte (mb, CEE_LDNULL);
4461 mono_mb_emit_byte (mb, CEE_STIND_REF);
4462
4463 emit_thread_force_interrupt_checkpoint (mb);
4464
4465 mono_mb_emit_byte (mb, CEE_LDARG_0);
4466 mono_mb_emit_byte (mb, CEE_LDARG_2);
4467 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
4468 mono_mb_emit_byte (mb, CEE_MONO_DYN_CALL);
4469
4470 pos = mono_mb_emit_branch (mb, CEE_LEAVE);
4471
4472 clause = (MonoExceptionClause *)mono_image_alloc0 (mono_defaults.corlib, sizeof (MonoExceptionClause));
4473 clause->flags = MONO_EXCEPTION_CLAUSE_FILTER;
4474 clause->try_len = mono_mb_get_label (mb);
4475
4476 /* filter code */
4477 clause->data.filter_offset = mono_mb_get_label (mb);
4478
4479 mono_mb_emit_byte (mb, CEE_POP);
4480 mono_mb_emit_byte (mb, CEE_LDARG_1);
4481 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
4482 mono_mb_emit_byte (mb, CEE_PREFIX1);
4483 mono_mb_emit_byte (mb, CEE_CGT_UN);
4484 mono_mb_emit_byte (mb, CEE_PREFIX1);
4485 mono_mb_emit_byte (mb, CEE_ENDFILTER);
4486
4487 clause->handler_offset = mono_mb_get_label (mb);
4488
4489 /* handler code */
4490 /* store exception */
4491 mono_mb_emit_stloc (mb, 1);
4492
4493 mono_mb_emit_byte (mb, CEE_LDARG_1);
4494 mono_mb_emit_ldloc (mb, 1);
4495 mono_mb_emit_byte (mb, CEE_STIND_REF);
4496
4497 mono_mb_emit_byte (mb, CEE_LDNULL);
4498 mono_mb_emit_stloc (mb, 0);
4499
4500 mono_mb_emit_branch (mb, CEE_LEAVE);
4501
4502 clause->handler_len = mono_mb_get_pos (mb) - clause->handler_offset;
4503
4504 mono_mb_set_clauses (mb, 1, clause);
4505
4506 /* return result */
4507 mono_mb_patch_branch (mb, pos);
4508 //mono_mb_emit_ldloc (mb, 0);
4509 mono_mb_emit_byte (mb, CEE_RET);
4510 #endif /* DISABLE_JIT */
4511
4512 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_RUNTIME_INVOKE_DYNAMIC);
4513
4514 mono_marshal_lock ();
4515 /* double-checked locking */
4516 if (!method)
4517 method = mono_mb_create (mb, csig, 16, info);
4518
4519 mono_marshal_unlock ();
4520
4521 mono_mb_free (mb);
4522
4523 return method;
4524 }
4525
4526 /*
4527 * mono_marshal_get_runtime_invoke_for_sig:
4528 *
4529 * Return a runtime invoke wrapper for a given signature.
4530 */
4531 MonoMethod *
4532 mono_marshal_get_runtime_invoke_for_sig (MonoMethodSignature *sig)
4533 {
4534 MonoMethodSignature *csig, *callsig;
4535 MonoMethodBuilder *mb;
4536 MonoImage *image;
4537 GHashTable *cache = NULL;
4538 GHashTable **cache_table = NULL;
4539 MonoMethod *res = NULL;
4540 char *name;
4541 const char *param_names [16];
4542 WrapperInfo *info;
4543
4544 /* A simplified version of mono_marshal_get_runtime_invoke */
4545
4546 image = mono_defaults.corlib;
4547
4548 callsig = mono_marshal_get_runtime_invoke_sig (sig);
4549
4550 cache_table = &image->wrapper_caches.runtime_invoke_sig_cache;
4551
4552 cache = get_cache (cache_table, (GHashFunc)mono_signature_hash,
4553 (GCompareFunc)runtime_invoke_signature_equal);
4554
4555 /* from mono_marshal_find_in_cache */
4556 mono_marshal_lock ();
4557 res = (MonoMethod *)g_hash_table_lookup (cache, callsig);
4558 mono_marshal_unlock ();
4559
4560 if (res) {
4561 g_free (callsig);
4562 return res;
4563 }
4564
4565 /* Make a copy of the signature from the image mempool */
4566 callsig = mono_metadata_signature_dup_full (image, callsig);
4567
4568 csig = mono_metadata_signature_alloc (image, 4);
4569 csig->ret = &mono_defaults.object_class->byval_arg;
4570 csig->params [0] = &mono_defaults.object_class->byval_arg;
4571 csig->params [1] = &mono_defaults.int_class->byval_arg;
4572 csig->params [2] = &mono_defaults.int_class->byval_arg;
4573 csig->params [3] = &mono_defaults.int_class->byval_arg;
4574 csig->pinvoke = 1;
4575 #if TARGET_WIN32
4576 /* This is called from runtime code so it has to be cdecl */
4577 csig->call_convention = MONO_CALL_C;
4578 #endif
4579
4580 name = mono_signature_to_name (callsig, "runtime_invoke_sig");
4581 mb = mono_mb_new (mono_defaults.object_class, name, MONO_WRAPPER_RUNTIME_INVOKE);
4582 g_free (name);
4583
4584 #ifndef DISABLE_JIT
4585 param_names [0] = "this";
4586 param_names [1] = "params";
4587 param_names [2] = "exc";
4588 param_names [3] = "method";
4589 mono_mb_set_param_names (mb, param_names);
4590
4591 emit_runtime_invoke_body (mb, image, NULL, sig, callsig, FALSE, FALSE);
4592 #endif
4593
4594 /* taken from mono_mb_create_and_cache */
4595 mono_marshal_lock ();
4596 res = (MonoMethod *)g_hash_table_lookup (cache, callsig);
4597 mono_marshal_unlock ();
4598
4599 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_RUNTIME_INVOKE_NORMAL);
4600 info->d.runtime_invoke.sig = callsig;
4601
4602 /* Somebody may have created it before us */
4603 if (!res) {
4604 MonoMethod *newm;
4605 newm = mono_mb_create (mb, csig, sig->param_count + 16, info);
4606
4607 mono_marshal_lock ();
4608 res = (MonoMethod *)g_hash_table_lookup (cache, callsig);
4609 if (!res) {
4610 res = newm;
4611 g_hash_table_insert (cache, callsig, res);
4612 } else {
4613 mono_free_method (newm);
4614 }
4615 mono_marshal_unlock ();
4616 }
4617
4618 /* end mono_mb_create_and_cache */
4619
4620 mono_mb_free (mb);
4621
4622 return res;
4623 }
4624
4625 #ifndef DISABLE_JIT
4626 static void
4627 mono_mb_emit_auto_layout_exception (MonoMethodBuilder *mb, MonoClass *klass)
4628 {
4629 char *msg = g_strdup_printf ("The type `%s.%s' layout needs to be Sequential or Explicit",
4630 klass->name_space, klass->name);
4631
4632 mono_mb_emit_exception_marshal_directive (mb, msg);
4633 }
4634 #endif
4635
4636 /*
4637 * generates IL code for the icall wrapper (the generated method
4638 * calls the unmanaged code in func)
4639 */
4640 MonoMethod *
4641 mono_marshal_get_icall_wrapper (MonoMethodSignature *sig, const char *name, gconstpointer func, gboolean check_exceptions)
4642 {
4643 MonoMethodSignature *csig, *csig2;
4644 MonoMethodBuilder *mb;
4645 MonoMethod *res;
4646 int i;
4647 WrapperInfo *info;
4648
4649 GHashTable *cache = get_cache (&mono_defaults.object_class->image->icall_wrapper_cache, mono_aligned_addr_hash, NULL);
4650 if ((res = mono_marshal_find_in_cache (cache, (gpointer) func)))
4651 return res;
4652
4653 g_assert (sig->pinvoke);
4654
4655 mb = mono_mb_new (mono_defaults.object_class, name, MONO_WRAPPER_MANAGED_TO_NATIVE);
4656
4657 mb->method->save_lmf = 1;
4658
4659 /* Add an explicit this argument */
4660 if (sig->hasthis)
4661 csig2 = mono_metadata_signature_dup_add_this (mono_defaults.corlib, sig, mono_defaults.object_class);
4662 else
4663 csig2 = mono_metadata_signature_dup_full (mono_defaults.corlib, sig);
4664
4665 #ifndef DISABLE_JIT
4666 if (sig->hasthis)
4667 mono_mb_emit_byte (mb, CEE_LDARG_0);
4668
4669 for (i = 0; i < sig->param_count; i++)
4670 mono_mb_emit_ldarg (mb, i + sig->hasthis);
4671
4672 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
4673 mono_mb_emit_op (mb, CEE_MONO_JIT_ICALL_ADDR, (gpointer)func);
4674 mono_mb_emit_calli (mb, csig2);
4675 if (check_exceptions)
4676 emit_thread_interrupt_checkpoint (mb);
4677 mono_mb_emit_byte (mb, CEE_RET);
4678 #endif
4679
4680 csig = mono_metadata_signature_dup_full (mono_defaults.corlib, sig);
4681 csig->pinvoke = 0;
4682 if (csig->call_convention == MONO_CALL_VARARG)
4683 csig->call_convention = 0;
4684
4685 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_ICALL_WRAPPER);
4686 info->d.icall.func = (gpointer)func;
4687 res = mono_mb_create_and_cache_full (cache, (gpointer) func, mb, csig, csig->param_count + 16, info, NULL);
4688 mono_mb_free (mb);
4689
4690 return res;
4691 }
4692
4693 static int
4694 emit_marshal_custom (EmitMarshalContext *m, int argnum, MonoType *t,
4695 MonoMarshalSpec *spec,
4696 int conv_arg, MonoType **conv_arg_type,
4697 MarshalAction action)
4698 {
4699 #ifdef DISABLE_JIT
4700 if (action == MARSHAL_ACTION_CONV_IN && t->type == MONO_TYPE_VALUETYPE)
4701 *conv_arg_type = &mono_defaults.int_class->byval_arg;
4702 return conv_arg;
4703 #else
4704 MonoError error;
4705 MonoType *mtype;
4706 MonoClass *mklass;
4707 static MonoClass *ICustomMarshaler = NULL;
4708 static MonoMethod *cleanup_native, *cleanup_managed;
4709 static MonoMethod *marshal_managed_to_native, *marshal_native_to_managed;
4710 MonoMethod *get_instance = NULL;
4711 MonoMethodBuilder *mb = m->mb;
4712 char *exception_msg = NULL;
4713 guint32 loc1;
4714 int pos2;
4715
4716 if (!ICustomMarshaler) {
4717 MonoClass *klass = mono_class_try_get_icustom_marshaler_class ();
4718 if (!klass) {
4719 exception_msg = g_strdup ("Current profile doesn't support ICustomMarshaler");
4720 goto handle_exception;
4721 }
4722
4723 cleanup_native = mono_class_get_method_from_name (klass, "CleanUpNativeData", 1);
4724 g_assert (cleanup_native);
4725 cleanup_managed = mono_class_get_method_from_name (klass, "CleanUpManagedData", 1);
4726 g_assert (cleanup_managed);
4727 marshal_managed_to_native = mono_class_get_method_from_name (klass, "MarshalManagedToNative", 1);
4728 g_assert (marshal_managed_to_native);
4729 marshal_native_to_managed = mono_class_get_method_from_name (klass, "MarshalNativeToManaged", 1);
4730 g_assert (marshal_native_to_managed);
4731
4732 mono_memory_barrier ();
4733 ICustomMarshaler = klass;
4734 }
4735
4736 if (spec->data.custom_data.image)
4737 mtype = mono_reflection_type_from_name_checked (spec->data.custom_data.custom_name, spec->data.custom_data.image, &error);
4738 else
4739 mtype = mono_reflection_type_from_name_checked (spec->data.custom_data.custom_name, m->image, &error);
4740 g_assert (mtype != NULL);
4741 mono_error_assert_ok (&error);
4742 mklass = mono_class_from_mono_type (mtype);
4743 g_assert (mklass != NULL);
4744
4745 if (!mono_class_is_assignable_from (ICustomMarshaler, mklass))
4746 exception_msg = g_strdup_printf ("Custom marshaler '%s' does not implement the ICustomMarshaler interface.", mklass->name);
4747
4748 get_instance = mono_class_get_method_from_name_flags (mklass, "GetInstance", 1, METHOD_ATTRIBUTE_STATIC);
4749 if (get_instance) {
4750 MonoMethodSignature *get_sig = mono_method_signature (get_instance);
4751 if ((get_sig->ret->type != MONO_TYPE_CLASS) ||
4752 (mono_class_from_mono_type (get_sig->ret) != ICustomMarshaler) ||
4753 (get_sig->params [0]->type != MONO_TYPE_STRING))
4754 get_instance = NULL;
4755 }
4756
4757 if (!get_instance)
4758 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);
4759
4760 handle_exception:
4761 /* Throw exception and emit compensation code if neccesary */
4762 if (exception_msg) {
4763 switch (action) {
4764 case MARSHAL_ACTION_CONV_IN:
4765 case MARSHAL_ACTION_CONV_RESULT:
4766 case MARSHAL_ACTION_MANAGED_CONV_RESULT:
4767 if ((action == MARSHAL_ACTION_CONV_RESULT) || (action == MARSHAL_ACTION_MANAGED_CONV_RESULT))
4768 mono_mb_emit_byte (mb, CEE_POP);
4769
4770 mono_mb_emit_exception_full (mb, "System", "ApplicationException", exception_msg);
4771 g_free (exception_msg);
4772
4773 break;
4774 case MARSHAL_ACTION_PUSH:
4775 mono_mb_emit_byte (mb, CEE_LDNULL);
4776 break;
4777 default:
4778 break;
4779 }
4780 return 0;
4781 }
4782
4783 /* FIXME: MS.NET seems to create one instance for each klass + cookie pair */
4784 /* FIXME: MS.NET throws an exception if GetInstance returns null */
4785
4786 switch (action) {
4787 case MARSHAL_ACTION_CONV_IN:
4788 switch (t->type) {
4789 case MONO_TYPE_CLASS:
4790 case MONO_TYPE_OBJECT:
4791 case MONO_TYPE_STRING:
4792 case MONO_TYPE_ARRAY:
4793 case MONO_TYPE_SZARRAY:
4794 case MONO_TYPE_VALUETYPE:
4795 break;
4796
4797 default:
4798 g_warning ("custom marshalling of type %x is currently not supported", t->type);
4799 g_assert_not_reached ();
4800 break;
4801 }
4802
4803 conv_arg = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
4804
4805 mono_mb_emit_byte (mb, CEE_LDNULL);
4806 mono_mb_emit_stloc (mb, conv_arg);
4807
4808 if (t->byref && (t->attrs & PARAM_ATTRIBUTE_OUT))
4809 break;
4810
4811 /* Minic MS.NET behavior */
4812 if (!t->byref && (t->attrs & PARAM_ATTRIBUTE_OUT) && !(t->attrs & PARAM_ATTRIBUTE_IN))
4813 break;
4814
4815 /* Check for null */
4816 mono_mb_emit_ldarg (mb, argnum);
4817 if (t->byref)
4818 mono_mb_emit_byte (mb, CEE_LDIND_I);
4819 pos2 = mono_mb_emit_branch (mb, CEE_BRFALSE);
4820
4821 mono_mb_emit_ldstr (mb, g_strdup (spec->data.custom_data.cookie));
4822
4823 mono_mb_emit_op (mb, CEE_CALL, get_instance);
4824
4825 mono_mb_emit_ldarg (mb, argnum);
4826 if (t->byref)
4827 mono_mb_emit_byte (mb, CEE_LDIND_REF);
4828
4829 if (t->type == MONO_TYPE_VALUETYPE) {
4830 /*
4831 * Since we can't determine the type of the argument, we
4832 * will assume the unmanaged function takes a pointer.
4833 */
4834 *conv_arg_type = &mono_defaults.int_class->byval_arg;
4835
4836 mono_mb_emit_op (mb, CEE_BOX, mono_class_from_mono_type (t));
4837 }
4838
4839 mono_mb_emit_op (mb, CEE_CALLVIRT, marshal_managed_to_native);
4840 mono_mb_emit_stloc (mb, conv_arg);
4841
4842 mono_mb_patch_branch (mb, pos2);
4843 break;
4844
4845 case MARSHAL_ACTION_CONV_OUT:
4846 /* Check for null */
4847 mono_mb_emit_ldloc (mb, conv_arg);
4848 pos2 = mono_mb_emit_branch (mb, CEE_BRFALSE);
4849
4850 if (t->byref) {
4851 mono_mb_emit_ldarg (mb, argnum);
4852
4853 mono_mb_emit_ldstr (mb, g_strdup (spec->data.custom_data.cookie));
4854
4855 mono_mb_emit_op (mb, CEE_CALL, get_instance);
4856
4857 mono_mb_emit_ldloc (mb, conv_arg);
4858 mono_mb_emit_op (mb, CEE_CALLVIRT, marshal_native_to_managed);
4859 mono_mb_emit_byte (mb, CEE_STIND_REF);
4860 } else if (t->attrs & PARAM_ATTRIBUTE_OUT) {
4861 mono_mb_emit_ldstr (mb, g_strdup (spec->data.custom_data.cookie));
4862
4863 mono_mb_emit_op (mb, CEE_CALL, get_instance);
4864
4865 mono_mb_emit_ldloc (mb, conv_arg);
4866 mono_mb_emit_op (mb, CEE_CALLVIRT, marshal_native_to_managed);
4867
4868 /* We have nowhere to store the result */
4869 mono_mb_emit_byte (mb, CEE_POP);
4870 }
4871
4872 mono_mb_emit_ldstr (mb, g_strdup (spec->data.custom_data.cookie));
4873
4874 mono_mb_emit_op (mb, CEE_CALL, get_instance);
4875
4876 mono_mb_emit_ldloc (mb, conv_arg);
4877
4878 mono_mb_emit_op (mb, CEE_CALLVIRT, cleanup_native);
4879
4880 mono_mb_patch_branch (mb, pos2);
4881 break;
4882
4883 case MARSHAL_ACTION_PUSH:
4884 if (t->byref)
4885 mono_mb_emit_ldloc_addr (mb, conv_arg);
4886 else
4887 mono_mb_emit_ldloc (mb, conv_arg);
4888 break;
4889
4890 case MARSHAL_ACTION_CONV_RESULT:
4891 loc1 = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
4892
4893 mono_mb_emit_stloc (mb, 3);
4894
4895 mono_mb_emit_ldloc (mb, 3);
4896 mono_mb_emit_stloc (mb, loc1);
4897
4898 /* Check for null */
4899 mono_mb_emit_ldloc (mb, 3);
4900 pos2 = mono_mb_emit_branch (mb, CEE_BRFALSE);
4901
4902 mono_mb_emit_ldstr (mb, g_strdup (spec->data.custom_data.cookie));
4903
4904 mono_mb_emit_op (mb, CEE_CALL, get_instance);
4905 mono_mb_emit_byte (mb, CEE_DUP);
4906
4907 mono_mb_emit_ldloc (mb, 3);
4908 mono_mb_emit_op (mb, CEE_CALLVIRT, marshal_native_to_managed);
4909 mono_mb_emit_stloc (mb, 3);
4910
4911 mono_mb_emit_ldloc (mb, loc1);
4912 mono_mb_emit_op (mb, CEE_CALLVIRT, cleanup_native);
4913
4914 mono_mb_patch_branch (mb, pos2);
4915 break;
4916
4917 case MARSHAL_ACTION_MANAGED_CONV_IN:
4918 conv_arg = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
4919
4920 mono_mb_emit_byte (mb, CEE_LDNULL);
4921 mono_mb_emit_stloc (mb, conv_arg);
4922
4923 if (t->byref && t->attrs & PARAM_ATTRIBUTE_OUT)
4924 break;
4925
4926 /* Check for null */
4927 mono_mb_emit_ldarg (mb, argnum);
4928 if (t->byref)
4929 mono_mb_emit_byte (mb, CEE_LDIND_I);
4930 pos2 = mono_mb_emit_branch (mb, CEE_BRFALSE);
4931
4932 mono_mb_emit_ldstr (mb, g_strdup (spec->data.custom_data.cookie));
4933 mono_mb_emit_op (mb, CEE_CALL, get_instance);
4934
4935 mono_mb_emit_ldarg (mb, argnum);
4936 if (t->byref)
4937 mono_mb_emit_byte (mb, CEE_LDIND_I);
4938
4939 mono_mb_emit_op (mb, CEE_CALLVIRT, marshal_native_to_managed);
4940 mono_mb_emit_stloc (mb, conv_arg);
4941
4942 mono_mb_patch_branch (mb, pos2);
4943 break;
4944
4945 case MARSHAL_ACTION_MANAGED_CONV_RESULT:
4946 g_assert (!t->byref);
4947
4948 loc1 = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
4949
4950 mono_mb_emit_stloc (mb, 3);
4951
4952 mono_mb_emit_ldloc (mb, 3);
4953 mono_mb_emit_stloc (mb, loc1);
4954
4955 /* Check for null */
4956 mono_mb_emit_ldloc (mb, 3);
4957 pos2 = mono_mb_emit_branch (mb, CEE_BRFALSE);
4958
4959 mono_mb_emit_ldstr (mb, g_strdup (spec->data.custom_data.cookie));
4960 mono_mb_emit_op (mb, CEE_CALL, get_instance);
4961 mono_mb_emit_byte (mb, CEE_DUP);
4962
4963 mono_mb_emit_ldloc (mb, 3);
4964 mono_mb_emit_op (mb, CEE_CALLVIRT, marshal_managed_to_native);
4965 mono_mb_emit_stloc (mb, 3);
4966
4967 mono_mb_emit_ldloc (mb, loc1);
4968 mono_mb_emit_op (mb, CEE_CALLVIRT, cleanup_managed);
4969
4970 mono_mb_patch_branch (mb, pos2);
4971 break;
4972
4973 case MARSHAL_ACTION_MANAGED_CONV_OUT:
4974
4975 /* Check for null */
4976 mono_mb_emit_ldloc (mb, conv_arg);
4977 pos2 = mono_mb_emit_branch (mb, CEE_BRFALSE);
4978
4979 if (t->byref) {
4980 mono_mb_emit_ldarg (mb, argnum);
4981
4982 mono_mb_emit_ldstr (mb, g_strdup (spec->data.custom_data.cookie));
4983
4984 mono_mb_emit_op (mb, CEE_CALL, get_instance);
4985
4986 mono_mb_emit_ldloc (mb, conv_arg);
4987 mono_mb_emit_op (mb, CEE_CALLVIRT, marshal_managed_to_native);
4988 mono_mb_emit_byte (mb, CEE_STIND_I);
4989 }
4990
4991 /* Call CleanUpManagedData */
4992 mono_mb_emit_ldstr (mb, g_strdup (spec->data.custom_data.cookie));
4993
4994 mono_mb_emit_op (mb, CEE_CALL, get_instance);
4995
4996 mono_mb_emit_ldloc (mb, conv_arg);
4997 mono_mb_emit_op (mb, CEE_CALLVIRT, cleanup_managed);
4998
4999 mono_mb_patch_branch (mb, pos2);
5000 break;
5001
5002 default:
5003 g_assert_not_reached ();
5004 }
5005 return conv_arg;
5006 #endif
5007
5008 }
5009
5010 static int
5011 emit_marshal_asany (EmitMarshalContext *m, int argnum, MonoType *t,
5012 MonoMarshalSpec *spec,
5013 int conv_arg, MonoType **conv_arg_type,
5014 MarshalAction action)
5015 {
5016 #ifndef DISABLE_JIT
5017 MonoMethodBuilder *mb = m->mb;
5018
5019 switch (action) {
5020 case MARSHAL_ACTION_CONV_IN: {
5021 MonoMarshalNative encoding = mono_marshal_get_string_encoding (m->piinfo, NULL);
5022
5023 g_assert (t->type == MONO_TYPE_OBJECT);
5024 g_assert (!t->byref);
5025
5026 conv_arg = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
5027 mono_mb_emit_ldarg (mb, argnum);
5028 mono_mb_emit_icon (mb, encoding);
5029 mono_mb_emit_icon (mb, t->attrs);
5030 mono_mb_emit_icall (mb, mono_marshal_asany);
5031 mono_mb_emit_stloc (mb, conv_arg);
5032 break;
5033 }
5034
5035 case MARSHAL_ACTION_PUSH:
5036 mono_mb_emit_ldloc (mb, conv_arg);
5037 break;
5038
5039 case MARSHAL_ACTION_CONV_OUT: {
5040 MonoMarshalNative encoding = mono_marshal_get_string_encoding (m->piinfo, NULL);
5041
5042 mono_mb_emit_ldarg (mb, argnum);
5043 mono_mb_emit_ldloc (mb, conv_arg);
5044 mono_mb_emit_icon (mb, encoding);
5045 mono_mb_emit_icon (mb, t->attrs);
5046 mono_mb_emit_icall (mb, mono_marshal_free_asany);
5047 break;
5048 }
5049
5050 default:
5051 g_assert_not_reached ();
5052 }
5053 #endif
5054 return conv_arg;
5055 }
5056
5057 static int
5058 emit_marshal_vtype (EmitMarshalContext *m, int argnum, MonoType *t,
5059 MonoMarshalSpec *spec,
5060 int conv_arg, MonoType **conv_arg_type,
5061 MarshalAction action)
5062 {
5063 #ifndef DISABLE_JIT
5064 MonoMethodBuilder *mb = m->mb;
5065 MonoClass *klass, *date_time_class;
5066 int pos = 0, pos2;
5067
5068 klass = mono_class_from_mono_type (t);
5069
5070 date_time_class = mono_class_get_date_time_class ();
5071
5072 switch (action) {
5073 case MARSHAL_ACTION_CONV_IN:
5074 if (klass == date_time_class) {
5075 /* Convert it to an OLE DATE type */
5076 static MonoMethod *to_oadate;
5077
5078 if (!to_oadate)
5079 to_oadate = mono_class_get_method_from_name (date_time_class, "ToOADate", 0);
5080 g_assert (to_oadate);
5081
5082 conv_arg = mono_mb_add_local (mb, &mono_defaults.double_class->byval_arg);
5083
5084 if (t->byref) {
5085 mono_mb_emit_ldarg (mb, argnum);
5086 pos = mono_mb_emit_branch (mb, CEE_BRFALSE);
5087 }
5088
5089 if (!(t->byref && !(t->attrs & PARAM_ATTRIBUTE_IN) && (t->attrs & PARAM_ATTRIBUTE_OUT))) {
5090 if (!t->byref)
5091 m->csig->params [argnum - m->csig->hasthis] = &mono_defaults.double_class->byval_arg;
5092
5093 mono_mb_emit_ldarg_addr (mb, argnum);
5094 mono_mb_emit_managed_call (mb, to_oadate, NULL);
5095 mono_mb_emit_stloc (mb, conv_arg);
5096 }
5097
5098 if (t->byref)
5099 mono_mb_patch_branch (mb, pos);
5100 break;
5101 }
5102
5103 if (mono_class_is_explicit_layout (klass) || klass->blittable || klass->enumtype)
5104 break;
5105
5106 conv_arg = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
5107
5108 /* store the address of the source into local variable 0 */
5109 if (t->byref)
5110 mono_mb_emit_ldarg (mb, argnum);
5111 else
5112 mono_mb_emit_ldarg_addr (mb, argnum);
5113
5114 mono_mb_emit_stloc (mb, 0);
5115
5116 /* allocate space for the native struct and
5117 * store the address into local variable 1 (dest) */
5118 mono_mb_emit_icon (mb, mono_class_native_size (klass, NULL));
5119 mono_mb_emit_byte (mb, CEE_PREFIX1);
5120 mono_mb_emit_byte (mb, CEE_LOCALLOC);
5121 mono_mb_emit_stloc (mb, conv_arg);
5122
5123 if (t->byref) {
5124 mono_mb_emit_ldloc (mb, 0);
5125 pos = mono_mb_emit_branch (mb, CEE_BRFALSE);
5126 }
5127
5128 if (!(t->byref && !(t->attrs & PARAM_ATTRIBUTE_IN) && (t->attrs & PARAM_ATTRIBUTE_OUT))) {
5129 /* set dst_ptr */
5130 mono_mb_emit_ldloc (mb, conv_arg);
5131 mono_mb_emit_stloc (mb, 1);
5132
5133 /* emit valuetype conversion code */
5134 emit_struct_conv (mb, klass, FALSE);
5135 }
5136
5137 if (t->byref)
5138 mono_mb_patch_branch (mb, pos);
5139 break;
5140
5141 case MARSHAL_ACTION_PUSH:
5142 if (spec && spec->native == MONO_NATIVE_LPSTRUCT) {
5143 /* FIXME: */
5144 g_assert (!t->byref);
5145
5146 /* Have to change the signature since the vtype is passed byref */
5147 m->csig->params [argnum - m->csig->hasthis] = &mono_defaults.int_class->byval_arg;
5148
5149 if (mono_class_is_explicit_layout (klass) || klass->blittable || klass->enumtype)
5150 mono_mb_emit_ldarg_addr (mb, argnum);
5151 else
5152 mono_mb_emit_ldloc (mb, conv_arg);
5153 break;
5154 }
5155
5156 if (klass == date_time_class) {
5157 if (t->byref)
5158 mono_mb_emit_ldloc_addr (mb, conv_arg);
5159 else
5160 mono_mb_emit_ldloc (mb, conv_arg);
5161 break;
5162 }
5163
5164 if (mono_class_is_explicit_layout (klass) || klass->blittable || klass->enumtype) {
5165 mono_mb_emit_ldarg (mb, argnum);
5166 break;
5167 }
5168 mono_mb_emit_ldloc (mb, conv_arg);
5169 if (!t->byref) {
5170 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
5171 mono_mb_emit_op (mb, CEE_MONO_LDNATIVEOBJ, klass);
5172 }
5173 break;
5174
5175 case MARSHAL_ACTION_CONV_OUT:
5176 if (klass == date_time_class) {
5177 /* Convert from an OLE DATE type */
5178 static MonoMethod *from_oadate;
5179
5180 if (!t->byref)
5181 break;
5182
5183 if (!((t->attrs & PARAM_ATTRIBUTE_IN) && !(t->attrs & PARAM_ATTRIBUTE_OUT))) {
5184 if (!from_oadate)
5185 from_oadate = mono_class_get_method_from_name (date_time_class, "FromOADate", 1);
5186 g_assert (from_oadate);
5187
5188 mono_mb_emit_ldarg (mb, argnum);
5189 mono_mb_emit_ldloc (mb, conv_arg);
5190 mono_mb_emit_managed_call (mb, from_oadate, NULL);
5191 mono_mb_emit_op (mb, CEE_STOBJ, date_time_class);
5192 }
5193 break;
5194 }
5195
5196 if (mono_class_is_explicit_layout (klass) || klass->blittable || klass->enumtype)
5197 break;
5198
5199 if (t->byref) {
5200 /* dst = argument */
5201 mono_mb_emit_ldarg (mb, argnum);
5202 mono_mb_emit_stloc (mb, 1);
5203
5204 mono_mb_emit_ldloc (mb, 1);
5205 pos = mono_mb_emit_branch (mb, CEE_BRFALSE);
5206
5207 if (!((t->attrs & PARAM_ATTRIBUTE_IN) && !(t->attrs & PARAM_ATTRIBUTE_OUT))) {
5208 /* src = tmp_locals [i] */
5209 mono_mb_emit_ldloc (mb, conv_arg);
5210 mono_mb_emit_stloc (mb, 0);
5211
5212 /* emit valuetype conversion code */
5213 emit_struct_conv (mb, klass, TRUE);
5214 }
5215 }
5216
5217 emit_struct_free (mb, klass, conv_arg);
5218
5219 if (t->byref)
5220 mono_mb_patch_branch (mb, pos);
5221 break;
5222
5223 case MARSHAL_ACTION_CONV_RESULT:
5224 if (mono_class_is_explicit_layout (klass) || klass->blittable) {
5225 mono_mb_emit_stloc (mb, 3);
5226 break;
5227 }
5228
5229 /* load pointer to returned value type */
5230 g_assert (m->vtaddr_var);
5231 mono_mb_emit_ldloc (mb, m->vtaddr_var);
5232 /* store the address of the source into local variable 0 */
5233 mono_mb_emit_stloc (mb, 0);
5234 /* set dst_ptr */
5235 mono_mb_emit_ldloc_addr (mb, 3);
5236 mono_mb_emit_stloc (mb, 1);
5237
5238 /* emit valuetype conversion code */
5239 emit_struct_conv (mb, klass, TRUE);
5240 break;
5241
5242 case MARSHAL_ACTION_MANAGED_CONV_IN:
5243 if (mono_class_is_explicit_layout (klass) || klass->blittable || klass->enumtype) {
5244 conv_arg = 0;
5245 break;
5246 }
5247
5248 conv_arg = mono_mb_add_local (mb, &klass->byval_arg);
5249
5250 if (t->attrs & PARAM_ATTRIBUTE_OUT)
5251 break;
5252
5253 if (t->byref)
5254 mono_mb_emit_ldarg (mb, argnum);
5255 else
5256 mono_mb_emit_ldarg_addr (mb, argnum);
5257 mono_mb_emit_stloc (mb, 0);
5258
5259 if (t->byref) {
5260 mono_mb_emit_ldloc (mb, 0);
5261 pos = mono_mb_emit_branch (mb, CEE_BRFALSE);
5262 }
5263
5264 mono_mb_emit_ldloc_addr (mb, conv_arg);
5265 mono_mb_emit_stloc (mb, 1);
5266
5267 /* emit valuetype conversion code */
5268 emit_struct_conv (mb, klass, TRUE);
5269
5270 if (t->byref)
5271 mono_mb_patch_branch (mb, pos);
5272 break;
5273
5274 case MARSHAL_ACTION_MANAGED_CONV_OUT:
5275 if (mono_class_is_explicit_layout (klass) || klass->blittable || klass->enumtype)
5276 break;
5277 if (t->byref && (t->attrs & PARAM_ATTRIBUTE_IN) && !(t->attrs & PARAM_ATTRIBUTE_OUT))
5278 break;
5279
5280 /* Check for null */
5281 mono_mb_emit_ldarg (mb, argnum);
5282 pos2 = mono_mb_emit_branch (mb, CEE_BRFALSE);
5283
5284 /* Set src */
5285 mono_mb_emit_ldloc_addr (mb, conv_arg);
5286 mono_mb_emit_stloc (mb, 0);
5287
5288 /* Set dest */
5289 mono_mb_emit_ldarg (mb, argnum);
5290 mono_mb_emit_stloc (mb, 1);
5291
5292 /* emit valuetype conversion code */
5293 emit_struct_conv (mb, klass, FALSE);
5294
5295 mono_mb_patch_branch (mb, pos2);
5296 break;
5297
5298 case MARSHAL_ACTION_MANAGED_CONV_RESULT:
5299 if (mono_class_is_explicit_layout (klass) || klass->blittable || klass->enumtype) {
5300 mono_mb_emit_stloc (mb, 3);
5301 m->retobj_var = 0;
5302 break;
5303 }
5304
5305 /* load pointer to returned value type */
5306 g_assert (m->vtaddr_var);
5307 mono_mb_emit_ldloc (mb, m->vtaddr_var);
5308
5309 /* store the address of the source into local variable 0 */
5310 mono_mb_emit_stloc (mb, 0);
5311 /* allocate space for the native struct and
5312 * store the address into dst_ptr */
5313 m->retobj_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
5314 m->retobj_class = klass;
5315 g_assert (m->retobj_var);
5316 mono_mb_emit_icon (mb, mono_class_native_size (klass, NULL));
5317 mono_mb_emit_byte (mb, CEE_CONV_I);
5318 mono_mb_emit_icall (mb, ves_icall_marshal_alloc);
5319 mono_mb_emit_stloc (mb, 1);
5320 mono_mb_emit_ldloc (mb, 1);
5321 mono_mb_emit_stloc (mb, m->retobj_var);
5322
5323 /* emit valuetype conversion code */
5324 emit_struct_conv (mb, klass, FALSE);
5325 break;
5326
5327 default:
5328 g_assert_not_reached ();
5329 }
5330 #endif
5331 return conv_arg;
5332 }
5333
5334 static int
5335 emit_marshal_string (EmitMarshalContext *m, int argnum, MonoType *t,
5336 MonoMarshalSpec *spec,
5337 int conv_arg, MonoType **conv_arg_type,
5338 MarshalAction action)
5339 {
5340 #ifdef DISABLE_JIT
5341 switch (action) {
5342 case MARSHAL_ACTION_CONV_IN:
5343 *conv_arg_type = &mono_defaults.int_class->byval_arg;
5344 break;
5345 case MARSHAL_ACTION_MANAGED_CONV_IN:
5346 *conv_arg_type = &mono_defaults.int_class->byval_arg;
5347 break;
5348 }
5349 #else
5350 MonoMethodBuilder *mb = m->mb;
5351 MonoMarshalNative encoding = mono_marshal_get_string_encoding (m->piinfo, spec);
5352 MonoMarshalConv conv = mono_marshal_get_string_to_ptr_conv (m->piinfo, spec);
5353 gboolean need_free;
5354
5355 switch (action) {
5356 case MARSHAL_ACTION_CONV_IN:
5357 *conv_arg_type = &mono_defaults.int_class->byval_arg;
5358 conv_arg = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
5359
5360 if (t->byref) {
5361 if (t->attrs & PARAM_ATTRIBUTE_OUT)
5362 break;
5363
5364 mono_mb_emit_ldarg (mb, argnum);
5365 mono_mb_emit_byte (mb, CEE_LDIND_I);
5366 } else {
5367 mono_mb_emit_ldarg (mb, argnum);
5368 }
5369
5370 if (conv == MONO_MARSHAL_CONV_INVALID) {
5371 char *msg = g_strdup_printf ("string marshalling conversion %d not implemented", encoding);
5372 mono_mb_emit_exception_marshal_directive (mb, msg);
5373 } else {
5374 mono_mb_emit_icall (mb, conv_to_icall (conv, NULL));
5375
5376 mono_mb_emit_stloc (mb, conv_arg);
5377 }
5378 break;
5379
5380 case MARSHAL_ACTION_CONV_OUT:
5381 conv = mono_marshal_get_ptr_to_string_conv (m->piinfo, spec, &need_free);
5382 if (conv == MONO_MARSHAL_CONV_INVALID) {
5383 char *msg = g_strdup_printf ("string marshalling conversion %d not implemented", encoding);
5384 mono_mb_emit_exception_marshal_directive (mb, msg);
5385 break;
5386 }
5387
5388 if (encoding == MONO_NATIVE_VBBYREFSTR) {
5389 static MonoMethod *m;
5390
5391 if (!m) {
5392 m = mono_class_get_method_from_name_flags (mono_defaults.string_class, "get_Length", -1, 0);
5393 g_assert (m);
5394 }
5395
5396 if (!t->byref) {
5397 char *msg = g_strdup_printf ("VBByRefStr marshalling requires a ref parameter.", encoding);
5398 mono_mb_emit_exception_marshal_directive (mb, msg);
5399 break;
5400 }
5401
5402 /*
5403 * Have to allocate a new string with the same length as the original, and
5404 * copy the contents of the buffer pointed to by CONV_ARG into it.
5405 */
5406 g_assert (t->byref);
5407 mono_mb_emit_ldarg (mb, argnum);
5408 mono_mb_emit_ldloc (mb, conv_arg);
5409 mono_mb_emit_ldarg (mb, argnum);
5410 mono_mb_emit_byte (mb, CEE_LDIND_I);
5411 mono_mb_emit_managed_call (mb, m, NULL);
5412 mono_mb_emit_icall (mb, mono_string_new_len_wrapper);
5413 mono_mb_emit_byte (mb, CEE_STIND_REF);
5414 } else if (t->byref && (t->attrs & PARAM_ATTRIBUTE_OUT || !(t->attrs & PARAM_ATTRIBUTE_IN))) {
5415 int stind_op;
5416 mono_mb_emit_ldarg (mb, argnum);
5417 mono_mb_emit_ldloc (mb, conv_arg);
5418 mono_mb_emit_icall (mb, conv_to_icall (conv, &stind_op));
5419 mono_mb_emit_byte (mb, stind_op);
5420 need_free = TRUE;
5421 }
5422
5423 if (need_free) {
5424 mono_mb_emit_ldloc (mb, conv_arg);
5425 if (conv == MONO_MARSHAL_CONV_BSTR_STR)
5426 mono_mb_emit_icall (mb, mono_free_bstr);
5427 else
5428 mono_mb_emit_icall (mb, mono_marshal_free);
5429 }
5430 break;
5431
5432 case MARSHAL_ACTION_PUSH:
5433 if (t->byref && encoding != MONO_NATIVE_VBBYREFSTR)
5434 mono_mb_emit_ldloc_addr (mb, conv_arg);
5435 else
5436 mono_mb_emit_ldloc (mb, conv_arg);
5437 break;
5438
5439 case MARSHAL_ACTION_CONV_RESULT:
5440 mono_mb_emit_stloc (mb, 0);
5441
5442 conv = mono_marshal_get_ptr_to_string_conv (m->piinfo, spec, &need_free);
5443 if (conv == MONO_MARSHAL_CONV_INVALID) {
5444 char *msg = g_strdup_printf ("string marshalling conversion %d not implemented", encoding);
5445 mono_mb_emit_exception_marshal_directive (mb, msg);
5446 break;
5447 }
5448
5449 mono_mb_emit_ldloc (mb, 0);
5450 mono_mb_emit_icall (mb, conv_to_icall (conv, NULL));
5451 mono_mb_emit_stloc (mb, 3);
5452
5453 /* free the string */
5454 mono_mb_emit_ldloc (mb, 0);
5455 if (conv == MONO_MARSHAL_CONV_BSTR_STR)
5456 mono_mb_emit_icall (mb, mono_free_bstr);
5457 else
5458 mono_mb_emit_icall (mb, mono_marshal_free);
5459 break;
5460
5461 case MARSHAL_ACTION_MANAGED_CONV_IN:
5462 conv_arg = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
5463
5464 *conv_arg_type = &mono_defaults.int_class->byval_arg;
5465
5466 if (t->byref) {
5467 if (t->attrs & PARAM_ATTRIBUTE_OUT)
5468 break;
5469 }
5470
5471 conv = mono_marshal_get_ptr_to_string_conv (m->piinfo, spec, &need_free);
5472 if (conv == MONO_MARSHAL_CONV_INVALID) {
5473 char *msg = g_strdup_printf ("string marshalling conversion %d not implemented", encoding);
5474 mono_mb_emit_exception_marshal_directive (mb, msg);
5475 break;
5476 }
5477
5478 mono_mb_emit_ldarg (mb, argnum);
5479 if (t->byref)
5480 mono_mb_emit_byte (mb, CEE_LDIND_I);
5481 mono_mb_emit_icall (mb, conv_to_icall (conv, NULL));
5482 mono_mb_emit_stloc (mb, conv_arg);
5483 break;
5484
5485 case MARSHAL_ACTION_MANAGED_CONV_OUT:
5486 if (t->byref) {
5487 if (conv_arg) {
5488 int stind_op;
5489 mono_mb_emit_ldarg (mb, argnum);
5490 mono_mb_emit_ldloc (mb, conv_arg);
5491 mono_mb_emit_icall (mb, conv_to_icall (conv, &stind_op));
5492 mono_mb_emit_byte (mb, stind_op);
5493 }
5494 }
5495 break;
5496
5497 case MARSHAL_ACTION_MANAGED_CONV_RESULT:
5498 if (conv_to_icall (conv, NULL) == mono_marshal_string_to_utf16)
5499 /* We need to make a copy so the caller is able to free it */
5500 mono_mb_emit_icall (mb, mono_marshal_string_to_utf16_copy);
5501 else
5502 mono_mb_emit_icall (mb, conv_to_icall (conv, NULL));
5503 mono_mb_emit_stloc (mb, 3);
5504 break;
5505
5506 default:
5507 g_assert_not_reached ();
5508 }
5509 #endif
5510 return conv_arg;
5511 }
5512
5513
5514 static int
5515 emit_marshal_safehandle (EmitMarshalContext *m, int argnum, MonoType *t,
5516 MonoMarshalSpec *spec, int conv_arg,
5517 MonoType **conv_arg_type, MarshalAction action)
5518 {
5519 #ifdef DISABLE_JIT
5520 if (action == MARSHAL_ACTION_CONV_IN)
5521 *conv_arg_type = &mono_defaults.int_class->byval_arg;
5522 #else
5523 MonoMethodBuilder *mb = m->mb;
5524
5525 switch (action){
5526 case MARSHAL_ACTION_CONV_IN: {
5527 MonoType *intptr_type;
5528 int dar_release_slot, pos;
5529
5530 intptr_type = &mono_defaults.int_class->byval_arg;
5531 conv_arg = mono_mb_add_local (mb, intptr_type);
5532 *conv_arg_type = intptr_type;
5533
5534 if (!sh_dangerous_add_ref)
5535 init_safe_handle ();
5536
5537 mono_mb_emit_ldarg (mb, argnum);
5538 pos = mono_mb_emit_branch (mb, CEE_BRTRUE);
5539 mono_mb_emit_exception (mb, "ArgumentNullException", NULL);
5540
5541 mono_mb_patch_branch (mb, pos);
5542 if (t->byref){
5543 /*
5544 * My tests in show that ref SafeHandles are not really
5545 * passed as ref objects. Instead a NULL is passed as the
5546 * value of the ref
5547 */
5548 mono_mb_emit_icon (mb, 0);
5549 mono_mb_emit_stloc (mb, conv_arg);
5550 break;
5551 }
5552
5553 /* Create local to hold the ref parameter to DangerousAddRef */
5554 dar_release_slot = mono_mb_add_local (mb, &mono_defaults.boolean_class->byval_arg);
5555
5556 /* set release = false; */
5557 mono_mb_emit_icon (mb, 0);
5558 mono_mb_emit_stloc (mb, dar_release_slot);
5559
5560 /* safehandle.DangerousAddRef (ref release) */
5561 mono_mb_emit_ldarg (mb, argnum);
5562 mono_mb_emit_ldloc_addr (mb, dar_release_slot);
5563 mono_mb_emit_managed_call (mb, sh_dangerous_add_ref, NULL);
5564
5565 /* Pull the handle field from SafeHandle */
5566 mono_mb_emit_ldarg (mb, argnum);
5567 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoSafeHandle, handle));
5568 mono_mb_emit_byte (mb, CEE_LDIND_I);
5569 mono_mb_emit_stloc (mb, conv_arg);
5570
5571 break;
5572 }
5573
5574 case MARSHAL_ACTION_PUSH:
5575 if (t->byref)
5576 mono_mb_emit_ldloc_addr (mb, conv_arg);
5577 else
5578 mono_mb_emit_ldloc (mb, conv_arg);
5579 break;
5580
5581 case MARSHAL_ACTION_CONV_OUT: {
5582 /* The slot for the boolean is the next temporary created after conv_arg, see the CONV_IN code */
5583 int dar_release_slot = conv_arg + 1;
5584 int label_next;
5585
5586 if (!sh_dangerous_release)
5587 init_safe_handle ();
5588
5589 if (t->byref){
5590 MonoMethod *ctor;
5591
5592 /*
5593 * My tests indicate that ref SafeHandles parameters are not actually
5594 * passed by ref, but instead a new Handle is created regardless of
5595 * whether a change happens in the unmanaged side.
5596 *
5597 * Also, the Handle is created before calling into unmanaged code,
5598 * but we do not support that mechanism (getting to the original
5599 * handle) and it makes no difference where we create this
5600 */
5601 ctor = mono_class_get_method_from_name (t->data.klass, ".ctor", 0);
5602 if (ctor == NULL){
5603 mono_mb_emit_exception (mb, "MissingMethodException", "paramterless constructor required");
5604 break;
5605 }
5606 /* refval = new SafeHandleDerived ()*/
5607 mono_mb_emit_ldarg (mb, argnum);
5608 mono_mb_emit_op (mb, CEE_NEWOBJ, ctor);
5609 mono_mb_emit_byte (mb, CEE_STIND_REF);
5610
5611 /* refval.handle = returned_handle */
5612 mono_mb_emit_ldarg (mb, argnum);
5613 mono_mb_emit_byte (mb, CEE_LDIND_REF);
5614 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoSafeHandle, handle));
5615 mono_mb_emit_ldloc (mb, conv_arg);
5616 mono_mb_emit_byte (mb, CEE_STIND_I);
5617 } else {
5618 mono_mb_emit_ldloc (mb, dar_release_slot);
5619 label_next = mono_mb_emit_branch (mb, CEE_BRFALSE);
5620 mono_mb_emit_ldarg (mb, argnum);
5621 mono_mb_emit_managed_call (mb, sh_dangerous_release, NULL);
5622 mono_mb_patch_branch (mb, label_next);
5623 }
5624 break;
5625 }
5626
5627 case MARSHAL_ACTION_CONV_RESULT: {
5628 MonoMethod *ctor = NULL;
5629 int intptr_handle_slot;
5630
5631 if (mono_class_is_abstract (t->data.klass)) {
5632 mono_mb_emit_byte (mb, CEE_POP);
5633 mono_mb_emit_exception_marshal_directive (mb, g_strdup ("Returned SafeHandles should not be abstract"));
5634 break;
5635 }
5636
5637 ctor = mono_class_get_method_from_name (t->data.klass, ".ctor", 0);
5638 if (ctor == NULL){
5639 mono_mb_emit_byte (mb, CEE_POP);
5640 mono_mb_emit_exception (mb, "MissingMethodException", "paramterless constructor required");
5641 break;
5642 }
5643 /* Store the IntPtr results into a local */
5644 intptr_handle_slot = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
5645 mono_mb_emit_stloc (mb, intptr_handle_slot);
5646
5647 /* Create return value */
5648 mono_mb_emit_op (mb, CEE_NEWOBJ, ctor);
5649 mono_mb_emit_stloc (mb, 3);
5650
5651 /* Set the return.handle to the value, am using ldflda, not sure if thats a good idea */
5652 mono_mb_emit_ldloc (mb, 3);
5653 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoSafeHandle, handle));
5654 mono_mb_emit_ldloc (mb, intptr_handle_slot);
5655 mono_mb_emit_byte (mb, CEE_STIND_I);
5656 break;
5657 }
5658
5659 case MARSHAL_ACTION_MANAGED_CONV_IN:
5660 fprintf (stderr, "mono/marshal: SafeHandles missing MANAGED_CONV_IN\n");
5661 break;
5662
5663 case MARSHAL_ACTION_MANAGED_CONV_OUT:
5664 fprintf (stderr, "mono/marshal: SafeHandles missing MANAGED_CONV_OUT\n");
5665 break;
5666
5667 case MARSHAL_ACTION_MANAGED_CONV_RESULT:
5668 fprintf (stderr, "mono/marshal: SafeHandles missing MANAGED_CONV_RESULT\n");
5669 break;
5670 default:
5671 printf ("Unhandled case for MarshalAction: %d\n", action);
5672 }
5673 #endif
5674 return conv_arg;
5675 }
5676
5677
5678 static int
5679 emit_marshal_handleref (EmitMarshalContext *m, int argnum, MonoType *t,
5680 MonoMarshalSpec *spec, int conv_arg,
5681 MonoType **conv_arg_type, MarshalAction action)
5682 {
5683 #ifdef DISABLE_JIT
5684 if (action == MARSHAL_ACTION_CONV_IN)
5685 *conv_arg_type = &mono_defaults.int_class->byval_arg;
5686 #else
5687 MonoMethodBuilder *mb = m->mb;
5688
5689 switch (action){
5690 case MARSHAL_ACTION_CONV_IN: {
5691 MonoType *intptr_type;
5692
5693 intptr_type = &mono_defaults.int_class->byval_arg;
5694 conv_arg = mono_mb_add_local (mb, intptr_type);
5695 *conv_arg_type = intptr_type;
5696
5697 if (t->byref){
5698 char *msg = g_strdup ("HandleRefs can not be returned from unmanaged code (or passed by ref)");
5699 mono_mb_emit_exception_marshal_directive (mb, msg);
5700 break;
5701 }
5702 mono_mb_emit_ldarg_addr (mb, argnum);
5703 mono_mb_emit_icon (mb, MONO_STRUCT_OFFSET (MonoHandleRef, handle));
5704 mono_mb_emit_byte (mb, CEE_ADD);
5705 mono_mb_emit_byte (mb, CEE_LDIND_I);
5706 mono_mb_emit_stloc (mb, conv_arg);
5707 break;
5708 }
5709
5710 case MARSHAL_ACTION_PUSH:
5711 mono_mb_emit_ldloc (mb, conv_arg);
5712 break;
5713
5714 case MARSHAL_ACTION_CONV_OUT: {
5715 /* no resource release required */
5716 break;
5717 }
5718
5719 case MARSHAL_ACTION_CONV_RESULT: {
5720 char *msg = g_strdup ("HandleRefs can not be returned from unmanaged code (or passed by ref)");
5721 mono_mb_emit_exception_marshal_directive (mb, msg);
5722 break;
5723 }
5724
5725 case MARSHAL_ACTION_MANAGED_CONV_IN:
5726 fprintf (stderr, "mono/marshal: SafeHandles missing MANAGED_CONV_IN\n");
5727 break;
5728
5729 case MARSHAL_ACTION_MANAGED_CONV_OUT:
5730 fprintf (stderr, "mono/marshal: SafeHandles missing MANAGED_CONV_OUT\n");
5731 break;
5732
5733 case MARSHAL_ACTION_MANAGED_CONV_RESULT:
5734 fprintf (stderr, "mono/marshal: SafeHandles missing MANAGED_CONV_RESULT\n");
5735 break;
5736 default:
5737 fprintf (stderr, "Unhandled case for MarshalAction: %d\n", action);
5738 }
5739 #endif
5740 return conv_arg;
5741 }
5742
5743
5744 static int
5745 emit_marshal_object (EmitMarshalContext *m, int argnum, MonoType *t,
5746 MonoMarshalSpec *spec,
5747 int conv_arg, MonoType **conv_arg_type,
5748 MarshalAction action)
5749 {
5750 #ifdef DISABLE_JIT
5751 if (action == MARSHAL_ACTION_CONV_IN)
5752 *conv_arg_type = &mono_defaults.int_class->byval_arg;
5753 #else
5754 MonoMethodBuilder *mb = m->mb;
5755 MonoClass *klass = mono_class_from_mono_type (t);
5756 int pos, pos2, loc;
5757
5758 switch (action) {
5759 case MARSHAL_ACTION_CONV_IN:
5760 *conv_arg_type = &mono_defaults.int_class->byval_arg;
5761 conv_arg = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
5762
5763 m->orig_conv_args [argnum] = 0;
5764
5765 if (mono_class_from_mono_type (t) == mono_defaults.object_class) {
5766 char *msg = g_strdup_printf ("Marshalling of type object is not implemented");
5767 mono_mb_emit_exception_marshal_directive (mb, msg);
5768 break;
5769 }
5770
5771 if (klass->delegate) {
5772 if (t->byref) {
5773 if (!(t->attrs & PARAM_ATTRIBUTE_OUT)) {
5774 char *msg = g_strdup_printf ("Byref marshalling of delegates is not implemented.");
5775 mono_mb_emit_exception_marshal_directive (mb, msg);
5776 }
5777 mono_mb_emit_byte (mb, CEE_LDNULL);
5778 mono_mb_emit_stloc (mb, conv_arg);
5779 } else {
5780 mono_mb_emit_ldarg (mb, argnum);
5781 mono_mb_emit_icall (mb, conv_to_icall (MONO_MARSHAL_CONV_DEL_FTN, NULL));
5782 mono_mb_emit_stloc (mb, conv_arg);
5783 }
5784 } else if (klass == mono_defaults.stringbuilder_class) {
5785 MonoMarshalNative encoding = mono_marshal_get_string_encoding (m->piinfo, spec);
5786 MonoMarshalConv conv = mono_marshal_get_stringbuilder_to_ptr_conv (m->piinfo, spec);
5787
5788 #if 0
5789 if (t->byref) {
5790 if (!(t->attrs & PARAM_ATTRIBUTE_OUT)) {
5791 char *msg = g_strdup_printf ("Byref marshalling of stringbuilders is not implemented.");
5792 mono_mb_emit_exception_marshal_directive (mb, msg);
5793 }
5794 break;
5795 }
5796 #endif
5797
5798 if (t->byref && !(t->attrs & PARAM_ATTRIBUTE_IN) && (t->attrs & PARAM_ATTRIBUTE_OUT))
5799 break;
5800
5801 if (conv == MONO_MARSHAL_CONV_INVALID) {
5802 char *msg = g_strdup_printf ("stringbuilder marshalling conversion %d not implemented", encoding);
5803 mono_mb_emit_exception_marshal_directive (mb, msg);
5804 break;
5805 }
5806
5807 mono_mb_emit_ldarg (mb, argnum);
5808 if (t->byref)
5809 mono_mb_emit_byte (mb, CEE_LDIND_I);
5810
5811 mono_mb_emit_icall (mb, conv_to_icall (conv, NULL));
5812 mono_mb_emit_stloc (mb, conv_arg);
5813 } else if (klass->blittable) {
5814 mono_mb_emit_byte (mb, CEE_LDNULL);
5815 mono_mb_emit_stloc (mb, conv_arg);
5816
5817 mono_mb_emit_ldarg (mb, argnum);
5818 pos = mono_mb_emit_branch (mb, CEE_BRFALSE);
5819
5820 mono_mb_emit_ldarg (mb, argnum);
5821 mono_mb_emit_ldflda (mb, sizeof (MonoObject));
5822 mono_mb_emit_stloc (mb, conv_arg);
5823
5824 mono_mb_patch_branch (mb, pos);
5825 break;
5826 } else {
5827 mono_mb_emit_byte (mb, CEE_LDNULL);
5828 mono_mb_emit_stloc (mb, conv_arg);
5829
5830 if (t->byref) {
5831 /* we dont need any conversions for out parameters */
5832 if (t->attrs & PARAM_ATTRIBUTE_OUT)
5833 break;
5834
5835 mono_mb_emit_ldarg (mb, argnum);
5836 mono_mb_emit_byte (mb, CEE_LDIND_I);
5837
5838 } else {
5839 mono_mb_emit_ldarg (mb, argnum);
5840 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
5841 mono_mb_emit_byte (mb, CEE_MONO_OBJADDR);
5842 }
5843
5844 /* store the address of the source into local variable 0 */
5845 mono_mb_emit_stloc (mb, 0);
5846 mono_mb_emit_ldloc (mb, 0);
5847 pos = mono_mb_emit_branch (mb, CEE_BRFALSE);
5848
5849 /* allocate space for the native struct and store the address */
5850 mono_mb_emit_icon (mb, mono_class_native_size (klass, NULL));
5851 mono_mb_emit_byte (mb, CEE_PREFIX1);
5852 mono_mb_emit_byte (mb, CEE_LOCALLOC);
5853 mono_mb_emit_stloc (mb, conv_arg);
5854
5855 if (t->byref) {
5856 /* Need to store the original buffer so we can free it later */
5857 m->orig_conv_args [argnum] = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
5858 mono_mb_emit_ldloc (mb, conv_arg);
5859 mono_mb_emit_stloc (mb, m->orig_conv_args [argnum]);
5860 }
5861
5862 /* set the src_ptr */
5863 mono_mb_emit_ldloc (mb, 0);
5864 mono_mb_emit_ldflda (mb, sizeof (MonoObject));
5865 mono_mb_emit_stloc (mb, 0);
5866
5867 /* set dst_ptr */
5868 mono_mb_emit_ldloc (mb, conv_arg);
5869 mono_mb_emit_stloc (mb, 1);
5870
5871 /* emit valuetype conversion code */
5872 emit_struct_conv (mb, klass, FALSE);
5873
5874 mono_mb_patch_branch (mb, pos);
5875 }
5876 break;
5877
5878 case MARSHAL_ACTION_CONV_OUT:
5879 if (klass == mono_defaults.stringbuilder_class) {
5880 gboolean need_free;
5881 MonoMarshalNative encoding;
5882 MonoMarshalConv conv;
5883
5884 encoding = mono_marshal_get_string_encoding (m->piinfo, spec);
5885 conv = mono_marshal_get_ptr_to_stringbuilder_conv (m->piinfo, spec, &need_free);
5886
5887 g_assert (encoding != -1);
5888
5889 if (t->byref) {
5890 //g_assert (!(t->attrs & PARAM_ATTRIBUTE_OUT));
5891
5892 need_free = TRUE;
5893
5894 mono_mb_emit_ldarg (mb, argnum);
5895 mono_mb_emit_ldloc (mb, conv_arg);
5896
5897 switch (encoding) {
5898 case MONO_NATIVE_LPWSTR:
5899 mono_mb_emit_icall (mb, mono_string_utf16_to_builder2);
5900 break;
5901 case MONO_NATIVE_LPSTR:
5902 mono_mb_emit_icall (mb, mono_string_utf8_to_builder2);
5903 break;
5904 case MONO_NATIVE_UTF8STR:
5905 mono_mb_emit_icall (mb, mono_string_utf8_to_builder2);
5906 break;
5907 default:
5908 g_assert_not_reached ();
5909 }
5910
5911 mono_mb_emit_byte (mb, CEE_STIND_REF);
5912 } else {
5913 mono_mb_emit_ldarg (mb, argnum);
5914 mono_mb_emit_ldloc (mb, conv_arg);
5915
5916 mono_mb_emit_icall (mb, conv_to_icall (conv, NULL));
5917 }
5918
5919 if (need_free) {
5920 mono_mb_emit_ldloc (mb, conv_arg);
5921 mono_mb_emit_icall (mb, mono_marshal_free);
5922 }
5923 break;
5924 }
5925
5926 if (klass->delegate) {
5927 if (t->byref) {
5928 mono_mb_emit_ldarg (mb, argnum);
5929 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
5930 mono_mb_emit_op (mb, CEE_MONO_CLASSCONST, klass);
5931 mono_mb_emit_ldloc (mb, conv_arg);
5932 mono_mb_emit_icall (mb, conv_to_icall (MONO_MARSHAL_CONV_FTN_DEL, NULL));
5933 mono_mb_emit_byte (mb, CEE_STIND_REF);
5934 }
5935 break;
5936 }
5937
5938 if (t->byref && (t->attrs & PARAM_ATTRIBUTE_OUT)) {
5939 /* allocate a new object */
5940 mono_mb_emit_ldarg (mb, argnum);
5941 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
5942 mono_mb_emit_op (mb, CEE_MONO_NEWOBJ, klass);
5943 mono_mb_emit_byte (mb, CEE_STIND_REF);
5944 }
5945
5946 /* dst = *argument */
5947 mono_mb_emit_ldarg (mb, argnum);
5948
5949 if (t->byref)
5950 mono_mb_emit_byte (mb, CEE_LDIND_I);
5951
5952 mono_mb_emit_stloc (mb, 1);
5953
5954 mono_mb_emit_ldloc (mb, 1);
5955 pos = mono_mb_emit_branch (mb, CEE_BRFALSE);
5956
5957 if (t->byref || (t->attrs & PARAM_ATTRIBUTE_OUT)) {
5958 mono_mb_emit_ldloc (mb, 1);
5959 mono_mb_emit_icon (mb, sizeof (MonoObject));
5960 mono_mb_emit_byte (mb, CEE_ADD);
5961 mono_mb_emit_stloc (mb, 1);
5962
5963 /* src = tmp_locals [i] */
5964 mono_mb_emit_ldloc (mb, conv_arg);
5965 mono_mb_emit_stloc (mb, 0);
5966
5967 /* emit valuetype conversion code */
5968 emit_struct_conv (mb, klass, TRUE);
5969
5970 /* Free the structure returned by the native code */
5971 emit_struct_free (mb, klass, conv_arg);
5972
5973 if (m->orig_conv_args [argnum]) {
5974 /*
5975 * If the native function changed the pointer, then free
5976 * the original structure plus the new pointer.
5977 */
5978 mono_mb_emit_ldloc (mb, m->orig_conv_args [argnum]);
5979 mono_mb_emit_ldloc (mb, conv_arg);
5980 pos2 = mono_mb_emit_branch (mb, CEE_BEQ);
5981
5982 if (!(t->attrs & PARAM_ATTRIBUTE_OUT)) {
5983 g_assert (m->orig_conv_args [argnum]);
5984
5985 emit_struct_free (mb, klass, m->orig_conv_args [argnum]);
5986 }
5987
5988 mono_mb_emit_ldloc (mb, conv_arg);
5989 mono_mb_emit_icall (mb, mono_marshal_free);
5990
5991 mono_mb_patch_branch (mb, pos2);
5992 }
5993 }
5994 else
5995 /* Free the original structure passed to native code */
5996 emit_struct_free (mb, klass, conv_arg);
5997
5998 mono_mb_patch_branch (mb, pos);
5999 break;
6000
6001 case MARSHAL_ACTION_PUSH:
6002 if (t->byref)
6003 mono_mb_emit_ldloc_addr (mb, conv_arg);
6004 else
6005 mono_mb_emit_ldloc (mb, conv_arg);
6006 break;
6007
6008 case MARSHAL_ACTION_CONV_RESULT:
6009 if (klass->delegate) {
6010 g_assert (!t->byref);
6011 mono_mb_emit_stloc (mb, 0);
6012 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
6013 mono_mb_emit_op (mb, CEE_MONO_CLASSCONST, klass);
6014 mono_mb_emit_ldloc (mb, 0);
6015 mono_mb_emit_icall (mb, conv_to_icall (MONO_MARSHAL_CONV_FTN_DEL, NULL));
6016 mono_mb_emit_stloc (mb, 3);
6017 } else if (klass == mono_defaults.stringbuilder_class){
6018 // FIXME: implement
6019 } else {
6020 /* set src */
6021 mono_mb_emit_stloc (mb, 0);
6022
6023 /* Make a copy since emit_conv modifies local 0 */
6024 loc = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
6025 mono_mb_emit_ldloc (mb, 0);
6026 mono_mb_emit_stloc (mb, loc);
6027
6028 mono_mb_emit_byte (mb, CEE_LDNULL);
6029 mono_mb_emit_stloc (mb, 3);
6030
6031 mono_mb_emit_ldloc (mb, 0);
6032 pos = mono_mb_emit_branch (mb, CEE_BRFALSE);
6033
6034 /* allocate result object */
6035
6036 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
6037 mono_mb_emit_op (mb, CEE_MONO_NEWOBJ, klass);
6038 mono_mb_emit_stloc (mb, 3);
6039
6040 /* set dst */
6041
6042 mono_mb_emit_ldloc (mb, 3);
6043 mono_mb_emit_ldflda (mb, sizeof (MonoObject));
6044 mono_mb_emit_stloc (mb, 1);
6045
6046 /* emit conversion code */
6047 emit_struct_conv (mb, klass, TRUE);
6048
6049 emit_struct_free (mb, klass, loc);
6050
6051 /* Free the pointer allocated by unmanaged code */
6052 mono_mb_emit_ldloc (mb, loc);
6053 mono_mb_emit_icall (mb, mono_marshal_free);
6054 mono_mb_patch_branch (mb, pos);
6055 }
6056 break;
6057
6058 case MARSHAL_ACTION_MANAGED_CONV_IN:
6059 conv_arg = mono_mb_add_local (mb, &klass->byval_arg);
6060
6061 if (klass->delegate) {
6062 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
6063 mono_mb_emit_op (mb, CEE_MONO_CLASSCONST, klass);
6064 mono_mb_emit_ldarg (mb, argnum);
6065 if (t->byref)
6066 mono_mb_emit_byte (mb, CEE_LDIND_I);
6067 mono_mb_emit_icall (mb, conv_to_icall (MONO_MARSHAL_CONV_FTN_DEL, NULL));
6068 mono_mb_emit_stloc (mb, conv_arg);
6069 break;
6070 }
6071
6072 if (klass == mono_defaults.stringbuilder_class) {
6073 MonoMarshalNative encoding;
6074
6075 encoding = mono_marshal_get_string_encoding (m->piinfo, spec);
6076
6077 // FIXME:
6078 g_assert (encoding == MONO_NATIVE_LPSTR || encoding == MONO_NATIVE_UTF8STR);
6079
6080 g_assert (!t->byref);
6081 g_assert (encoding != -1);
6082
6083 mono_mb_emit_ldarg (mb, argnum);
6084 mono_mb_emit_icall (mb, mono_string_utf8_to_builder2);
6085 mono_mb_emit_stloc (mb, conv_arg);
6086 break;
6087 }
6088
6089 /* The class can not have an automatic layout */
6090 if (mono_class_is_auto_layout (klass)) {
6091 mono_mb_emit_auto_layout_exception (mb, klass);
6092 break;
6093 }
6094
6095 if (t->attrs & PARAM_ATTRIBUTE_OUT) {
6096 mono_mb_emit_byte (mb, CEE_LDNULL);
6097 mono_mb_emit_stloc (mb, conv_arg);
6098 break;
6099 }
6100
6101 /* Set src */
6102 mono_mb_emit_ldarg (mb, argnum);
6103 if (t->byref) {
6104 int pos2;
6105
6106 /* Check for NULL and raise an exception */
6107 pos2 = mono_mb_emit_branch (mb, CEE_BRTRUE);
6108
6109 mono_mb_emit_exception (mb, "ArgumentNullException", NULL);
6110
6111 mono_mb_patch_branch (mb, pos2);
6112 mono_mb_emit_ldarg (mb, argnum);
6113 mono_mb_emit_byte (mb, CEE_LDIND_I);
6114 }
6115
6116 mono_mb_emit_stloc (mb, 0);
6117
6118 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
6119 mono_mb_emit_stloc (mb, conv_arg);
6120
6121 mono_mb_emit_ldloc (mb, 0);
6122 pos = mono_mb_emit_branch (mb, CEE_BRFALSE);
6123
6124 /* Create and set dst */
6125 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
6126 mono_mb_emit_op (mb, CEE_MONO_NEWOBJ, klass);
6127 mono_mb_emit_stloc (mb, conv_arg);
6128 mono_mb_emit_ldloc (mb, conv_arg);
6129 mono_mb_emit_ldflda (mb, sizeof (MonoObject));
6130 mono_mb_emit_stloc (mb, 1);
6131
6132 /* emit valuetype conversion code */
6133 emit_struct_conv (mb, klass, TRUE);
6134
6135 mono_mb_patch_branch (mb, pos);
6136 break;
6137
6138 case MARSHAL_ACTION_MANAGED_CONV_OUT:
6139 if (klass->delegate) {
6140 if (t->byref) {
6141 int stind_op;
6142 mono_mb_emit_ldarg (mb, argnum);
6143 mono_mb_emit_ldloc (mb, conv_arg);
6144 mono_mb_emit_icall (mb, conv_to_icall (MONO_MARSHAL_CONV_DEL_FTN, &stind_op));
6145 mono_mb_emit_byte (mb, stind_op);
6146 break;
6147 }
6148 }
6149
6150 if (t->byref) {
6151 /* Check for null */
6152 mono_mb_emit_ldloc (mb, conv_arg);
6153 pos = mono_mb_emit_branch (mb, CEE_BRTRUE);
6154 mono_mb_emit_ldarg (mb, argnum);
6155 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
6156 mono_mb_emit_byte (mb, CEE_STIND_REF);
6157 pos2 = mono_mb_emit_branch (mb, CEE_BR);
6158
6159 mono_mb_patch_branch (mb, pos);
6160
6161 /* Set src */
6162 mono_mb_emit_ldloc (mb, conv_arg);
6163 mono_mb_emit_ldflda (mb, sizeof (MonoObject));
6164 mono_mb_emit_stloc (mb, 0);
6165
6166 /* Allocate and set dest */
6167 mono_mb_emit_icon (mb, mono_class_native_size (klass, NULL));
6168 mono_mb_emit_byte (mb, CEE_CONV_I);
6169 mono_mb_emit_icall (mb, ves_icall_marshal_alloc);
6170 mono_mb_emit_stloc (mb, 1);
6171
6172 /* Update argument pointer */
6173 mono_mb_emit_ldarg (mb, argnum);
6174 mono_mb_emit_ldloc (mb, 1);
6175 mono_mb_emit_byte (mb, CEE_STIND_I);
6176
6177 /* emit valuetype conversion code */
6178 emit_struct_conv (mb, klass, FALSE);
6179
6180 mono_mb_patch_branch (mb, pos2);
6181 } else if (klass == mono_defaults.stringbuilder_class) {
6182 // FIXME: What to do here ?
6183 } else {
6184 /* byval [Out] marshalling */
6185
6186 /* FIXME: Handle null */
6187
6188 /* Set src */
6189 mono_mb_emit_ldloc (mb, conv_arg);
6190 mono_mb_emit_ldflda (mb, sizeof (MonoObject));
6191 mono_mb_emit_stloc (mb, 0);
6192
6193 /* Set dest */
6194 mono_mb_emit_ldarg (mb, argnum);
6195 mono_mb_emit_stloc (mb, 1);
6196
6197 /* emit valuetype conversion code */
6198 emit_struct_conv (mb, klass, FALSE);
6199 }
6200 break;
6201
6202 case MARSHAL_ACTION_MANAGED_CONV_RESULT:
6203 if (klass->delegate) {
6204 mono_mb_emit_icall (mb, conv_to_icall (MONO_MARSHAL_CONV_DEL_FTN, NULL));
6205 mono_mb_emit_stloc (mb, 3);
6206 break;
6207 }
6208
6209 /* The class can not have an automatic layout */
6210 if (mono_class_is_auto_layout (klass)) {
6211 mono_mb_emit_auto_layout_exception (mb, klass);
6212 break;
6213 }
6214
6215 mono_mb_emit_stloc (mb, 0);
6216 /* Check for null */
6217 mono_mb_emit_ldloc (mb, 0);
6218 pos = mono_mb_emit_branch (mb, CEE_BRTRUE);
6219 mono_mb_emit_byte (mb, CEE_LDNULL);
6220 mono_mb_emit_stloc (mb, 3);
6221 pos2 = mono_mb_emit_branch (mb, CEE_BR);
6222
6223 mono_mb_patch_branch (mb, pos);
6224
6225 /* Set src */
6226 mono_mb_emit_ldloc (mb, 0);
6227 mono_mb_emit_ldflda (mb, sizeof (MonoObject));
6228 mono_mb_emit_stloc (mb, 0);
6229
6230 /* Allocate and set dest */
6231 mono_mb_emit_icon (mb, mono_class_native_size (klass, NULL));
6232 mono_mb_emit_byte (mb, CEE_CONV_I);
6233 mono_mb_emit_icall (mb, ves_icall_marshal_alloc);
6234 mono_mb_emit_byte (mb, CEE_DUP);
6235 mono_mb_emit_stloc (mb, 1);
6236 mono_mb_emit_stloc (mb, 3);
6237
6238 emit_struct_conv (mb, klass, FALSE);
6239
6240 mono_mb_patch_branch (mb, pos2);
6241 break;
6242
6243 default:
6244 g_assert_not_reached ();
6245 }
6246 #endif
6247 return conv_arg;
6248 }
6249
6250 #ifndef DISABLE_JIT
6251
6252 #ifndef DISABLE_COM
6253
6254 static int
6255 emit_marshal_variant (EmitMarshalContext *m, int argnum, MonoType *t,
6256 MonoMarshalSpec *spec,
6257 int conv_arg, MonoType **conv_arg_type,
6258 MarshalAction action)
6259 {
6260 MonoMethodBuilder *mb = m->mb;
6261 static MonoMethod *get_object_for_native_variant = NULL;
6262 static MonoMethod *get_native_variant_for_object = NULL;
6263
6264 if (!get_object_for_native_variant)
6265 get_object_for_native_variant = mono_class_get_method_from_name (mono_defaults.marshal_class, "GetObjectForNativeVariant", 1);
6266 g_assert (get_object_for_native_variant);
6267
6268 if (!get_native_variant_for_object)
6269 get_native_variant_for_object = mono_class_get_method_from_name (mono_defaults.marshal_class, "GetNativeVariantForObject", 2);
6270 g_assert (get_native_variant_for_object);
6271
6272 switch (action) {
6273 case MARSHAL_ACTION_CONV_IN: {
6274 conv_arg = mono_mb_add_local (mb, &mono_class_get_variant_class ()->byval_arg);
6275
6276 if (t->byref)
6277 *conv_arg_type = &mono_class_get_variant_class ()->this_arg;
6278 else
6279 *conv_arg_type = &mono_class_get_variant_class ()->byval_arg;
6280
6281 if (t->byref && !(t->attrs & PARAM_ATTRIBUTE_IN) && t->attrs & PARAM_ATTRIBUTE_OUT)
6282 break;
6283
6284 mono_mb_emit_ldarg (mb, argnum);
6285 if (t->byref)
6286 mono_mb_emit_byte(mb, CEE_LDIND_REF);
6287 mono_mb_emit_ldloc_addr (mb, conv_arg);
6288 mono_mb_emit_managed_call (mb, get_native_variant_for_object, NULL);
6289 break;
6290 }
6291
6292 case MARSHAL_ACTION_CONV_OUT: {
6293 static MonoMethod *variant_clear = NULL;
6294
6295 if (!variant_clear)
6296 variant_clear = mono_class_get_method_from_name (mono_class_get_variant_class (), "Clear", 0);
6297 g_assert (variant_clear);
6298
6299
6300 if (t->byref && (t->attrs & PARAM_ATTRIBUTE_OUT || !(t->attrs & PARAM_ATTRIBUTE_IN))) {
6301 mono_mb_emit_ldarg (mb, argnum);
6302 mono_mb_emit_ldloc_addr (mb, conv_arg);
6303 mono_mb_emit_managed_call (mb, get_object_for_native_variant, NULL);
6304 mono_mb_emit_byte (mb, CEE_STIND_REF);
6305 }
6306
6307 mono_mb_emit_ldloc_addr (mb, conv_arg);
6308 mono_mb_emit_managed_call (mb, variant_clear, NULL);
6309 break;
6310 }
6311
6312 case MARSHAL_ACTION_PUSH:
6313 if (t->byref)
6314 mono_mb_emit_ldloc_addr (mb, conv_arg);
6315 else
6316 mono_mb_emit_ldloc (mb, conv_arg);
6317 break;
6318
6319 case MARSHAL_ACTION_CONV_RESULT: {
6320 char *msg = g_strdup ("Marshalling of VARIANT not supported as a return type.");
6321 mono_mb_emit_exception_marshal_directive (mb, msg);
6322 break;
6323 }
6324
6325 case MARSHAL_ACTION_MANAGED_CONV_IN: {
6326 conv_arg = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
6327
6328 if (t->byref)
6329 *conv_arg_type = &mono_class_get_variant_class ()->this_arg;
6330 else
6331 *conv_arg_type = &mono_class_get_variant_class ()->byval_arg;
6332
6333 if (t->byref && !(t->attrs & PARAM_ATTRIBUTE_IN) && t->attrs & PARAM_ATTRIBUTE_OUT)
6334 break;
6335
6336 if (t->byref)
6337 mono_mb_emit_ldarg (mb, argnum);
6338 else
6339 mono_mb_emit_ldarg_addr (mb, argnum);
6340 mono_mb_emit_managed_call (mb, get_object_for_native_variant, NULL);
6341 mono_mb_emit_stloc (mb, conv_arg);
6342 break;
6343 }
6344
6345 case MARSHAL_ACTION_MANAGED_CONV_OUT: {
6346 if (t->byref && (t->attrs & PARAM_ATTRIBUTE_OUT || !(t->attrs & PARAM_ATTRIBUTE_IN))) {
6347 mono_mb_emit_ldloc (mb, conv_arg);
6348 mono_mb_emit_ldarg (mb, argnum);
6349 mono_mb_emit_managed_call (mb, get_native_variant_for_object, NULL);
6350 }
6351 break;
6352 }
6353
6354 case MARSHAL_ACTION_MANAGED_CONV_RESULT: {
6355 char *msg = g_strdup ("Marshalling of VARIANT not supported as a return type.");
6356 mono_mb_emit_exception_marshal_directive (mb, msg);
6357 break;
6358 }
6359
6360 default:
6361 g_assert_not_reached ();
6362 }
6363
6364 return conv_arg;
6365 }
6366
6367 #endif /* DISABLE_COM */
6368 #endif /* DISABLE_JIT */
6369
6370 static gboolean
6371 mono_pinvoke_is_unicode (MonoMethodPInvoke *piinfo)
6372 {
6373 switch (piinfo->piflags & PINVOKE_ATTRIBUTE_CHAR_SET_MASK) {
6374 case PINVOKE_ATTRIBUTE_CHAR_SET_ANSI:
6375 return FALSE;
6376 case PINVOKE_ATTRIBUTE_CHAR_SET_UNICODE:
6377 return TRUE;
6378 case PINVOKE_ATTRIBUTE_CHAR_SET_AUTO:
6379 default:
6380 #ifdef TARGET_WIN32
6381 return TRUE;
6382 #else
6383 return FALSE;
6384 #endif
6385 }
6386 }
6387
6388
6389 static int
6390 emit_marshal_array (EmitMarshalContext *m, int argnum, MonoType *t,
6391 MonoMarshalSpec *spec,
6392 int conv_arg, MonoType **conv_arg_type,
6393 MarshalAction action)
6394 {
6395 #ifdef DISABLE_JIT
6396 switch (action) {
6397 case MARSHAL_ACTION_CONV_IN:
6398 *conv_arg_type = &mono_defaults.object_class->byval_arg;
6399 break;
6400 case MARSHAL_ACTION_MANAGED_CONV_IN:
6401 *conv_arg_type = &mono_defaults.int_class->byval_arg;
6402 break;
6403 }
6404 #else
6405 MonoMethodBuilder *mb = m->mb;
6406 MonoClass *klass = mono_class_from_mono_type (t);
6407 gboolean need_convert, need_free;
6408 MonoMarshalNative encoding;
6409
6410 encoding = mono_marshal_get_string_encoding (m->piinfo, spec);
6411
6412 switch (action) {
6413 case MARSHAL_ACTION_CONV_IN:
6414 *conv_arg_type = &mono_defaults.object_class->byval_arg;
6415 conv_arg = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
6416
6417 if (klass->element_class->blittable) {
6418 mono_mb_emit_ldarg (mb, argnum);
6419 if (t->byref)
6420 mono_mb_emit_byte (mb, CEE_LDIND_I);
6421 mono_mb_emit_icall (mb, conv_to_icall (MONO_MARSHAL_CONV_ARRAY_LPARRAY, NULL));
6422 mono_mb_emit_stloc (mb, conv_arg);
6423 } else {
6424 MonoClass *eklass;
6425 guint32 label1, label2, label3;
6426 int index_var, src_var, dest_ptr, esize;
6427 MonoMarshalConv conv;
6428 gboolean is_string = FALSE;
6429
6430 dest_ptr = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
6431
6432 eklass = klass->element_class;
6433
6434 if (eklass == mono_defaults.string_class) {
6435 is_string = TRUE;
6436 conv = mono_marshal_get_string_to_ptr_conv (m->piinfo, spec);
6437 }
6438 else if (eklass == mono_defaults.stringbuilder_class) {
6439 is_string = TRUE;
6440 conv = mono_marshal_get_stringbuilder_to_ptr_conv (m->piinfo, spec);
6441 }
6442 else
6443 conv = MONO_MARSHAL_CONV_INVALID;
6444
6445 if (is_string && conv == MONO_MARSHAL_CONV_INVALID) {
6446 char *msg = g_strdup_printf ("string/stringbuilder marshalling conversion %d not implemented", encoding);
6447 mono_mb_emit_exception_marshal_directive (mb, msg);
6448 break;
6449 }
6450
6451 src_var = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
6452 mono_mb_emit_ldarg (mb, argnum);
6453 if (t->byref)
6454 mono_mb_emit_byte (mb, CEE_LDIND_I);
6455 mono_mb_emit_stloc (mb, src_var);
6456
6457 /* Check null */
6458 mono_mb_emit_ldloc (mb, src_var);
6459 mono_mb_emit_stloc (mb, conv_arg);
6460 mono_mb_emit_ldloc (mb, src_var);
6461 label1 = mono_mb_emit_branch (mb, CEE_BRFALSE);
6462
6463 if (is_string)
6464 esize = sizeof (gpointer);
6465 else if (eklass == mono_defaults.char_class) /*can't call mono_marshal_type_size since it causes all sorts of asserts*/
6466 esize = mono_pinvoke_is_unicode (m->piinfo) ? 2 : 1;
6467 else
6468 esize = mono_class_native_size (eklass, NULL);
6469
6470 /* allocate space for the native struct and store the address */
6471 mono_mb_emit_icon (mb, esize);
6472 mono_mb_emit_ldloc (mb, src_var);
6473 mono_mb_emit_byte (mb, CEE_LDLEN);
6474
6475 if (eklass == mono_defaults.string_class) {
6476 /* Make the array bigger for the terminating null */
6477 mono_mb_emit_byte (mb, CEE_LDC_I4_1);
6478 mono_mb_emit_byte (mb, CEE_ADD);
6479 }
6480 mono_mb_emit_byte (mb, CEE_MUL);
6481 mono_mb_emit_byte (mb, CEE_PREFIX1);
6482 mono_mb_emit_byte (mb, CEE_LOCALLOC);
6483 mono_mb_emit_stloc (mb, conv_arg);
6484
6485 mono_mb_emit_ldloc (mb, conv_arg);
6486 mono_mb_emit_stloc (mb, dest_ptr);
6487
6488 /* Emit marshalling loop */
6489 index_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
6490 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
6491 mono_mb_emit_stloc (mb, index_var);
6492 label2 = mono_mb_get_label (mb);
6493 mono_mb_emit_ldloc (mb, index_var);
6494 mono_mb_emit_ldloc (mb, src_var);
6495 mono_mb_emit_byte (mb, CEE_LDLEN);
6496 label3 = mono_mb_emit_branch (mb, CEE_BGE);
6497
6498 /* Emit marshalling code */
6499
6500 if (is_string) {
6501 int stind_op;
6502 mono_mb_emit_ldloc (mb, dest_ptr);
6503 mono_mb_emit_ldloc (mb, src_var);
6504 mono_mb_emit_ldloc (mb, index_var);
6505 mono_mb_emit_byte (mb, CEE_LDELEM_REF);
6506 mono_mb_emit_icall (mb, conv_to_icall (conv, &stind_op));
6507 mono_mb_emit_byte (mb, stind_op);
6508 } else {
6509 /* set the src_ptr */
6510 mono_mb_emit_ldloc (mb, src_var);
6511 mono_mb_emit_ldloc (mb, index_var);
6512 mono_mb_emit_op (mb, CEE_LDELEMA, eklass);
6513 mono_mb_emit_stloc (mb, 0);
6514
6515 /* set dst_ptr */
6516 mono_mb_emit_ldloc (mb, dest_ptr);
6517 mono_mb_emit_stloc (mb, 1);
6518
6519 /* emit valuetype conversion code */
6520 emit_struct_conv_full (mb, eklass, FALSE, 0, eklass == mono_defaults.char_class ? encoding : (MonoMarshalNative)-1);
6521 }
6522
6523 mono_mb_emit_add_to_local (mb, index_var, 1);
6524 mono_mb_emit_add_to_local (mb, dest_ptr, esize);
6525
6526 mono_mb_emit_branch_label (mb, CEE_BR, label2);
6527
6528 mono_mb_patch_branch (mb, label3);
6529
6530 if (eklass == mono_defaults.string_class) {
6531 /* Null terminate */
6532 mono_mb_emit_ldloc (mb, dest_ptr);
6533 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
6534 mono_mb_emit_byte (mb, CEE_STIND_REF);
6535 }
6536
6537 mono_mb_patch_branch (mb, label1);
6538 }
6539
6540 break;
6541
6542 case MARSHAL_ACTION_CONV_OUT:
6543 /* Unicode character arrays are implicitly marshalled as [Out] under MS.NET */
6544 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);
6545 need_free = mono_marshal_need_free (&klass->element_class->byval_arg,
6546 m->piinfo, spec);
6547
6548 if ((t->attrs & PARAM_ATTRIBUTE_OUT) && spec && spec->native == MONO_NATIVE_LPARRAY && spec->data.array_data.param_num != -1) {
6549 int param_num = spec->data.array_data.param_num;
6550 MonoType *param_type;
6551
6552 param_type = m->sig->params [param_num];
6553
6554 if (param_type->byref && param_type->type != MONO_TYPE_I4) {
6555 char *msg = g_strdup ("Not implemented.");
6556 mono_mb_emit_exception_marshal_directive (mb, msg);
6557 break;
6558 }
6559
6560 if (t->byref ) {
6561 mono_mb_emit_ldarg (mb, argnum);
6562
6563 /* Create the managed array */
6564 mono_mb_emit_ldarg (mb, param_num);
6565 if (m->sig->params [param_num]->byref)
6566 // FIXME: Support other types
6567 mono_mb_emit_byte (mb, CEE_LDIND_I4);
6568 mono_mb_emit_byte (mb, CEE_CONV_OVF_I);
6569 mono_mb_emit_op (mb, CEE_NEWARR, klass->element_class);
6570 /* Store into argument */
6571 mono_mb_emit_byte (mb, CEE_STIND_REF);
6572 }
6573 }
6574
6575 if (need_convert || need_free) {
6576 /* FIXME: Optimize blittable case */
6577 MonoClass *eklass;
6578 guint32 label1, label2, label3;
6579 int index_var, src_ptr, loc, esize;
6580
6581 eklass = klass->element_class;
6582 if ((eklass == mono_defaults.stringbuilder_class) || (eklass == mono_defaults.string_class))
6583 esize = sizeof (gpointer);
6584 else if (eklass == mono_defaults.char_class)
6585 esize = mono_pinvoke_is_unicode (m->piinfo) ? 2 : 1;
6586 else
6587 esize = mono_class_native_size (eklass, NULL);
6588 src_ptr = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
6589 loc = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
6590
6591 /* Check null */
6592 mono_mb_emit_ldarg (mb, argnum);
6593 if (t->byref)
6594 mono_mb_emit_byte (mb, CEE_LDIND_I);
6595 label1 = mono_mb_emit_branch (mb, CEE_BRFALSE);
6596
6597 mono_mb_emit_ldloc (mb, conv_arg);
6598 mono_mb_emit_stloc (mb, src_ptr);
6599
6600 /* Emit marshalling loop */
6601 index_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
6602 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
6603 mono_mb_emit_stloc (mb, index_var);
6604 label2 = mono_mb_get_label (mb);
6605 mono_mb_emit_ldloc (mb, index_var);
6606 mono_mb_emit_ldarg (mb, argnum);
6607 if (t->byref)
6608 mono_mb_emit_byte (mb, CEE_LDIND_REF);
6609 mono_mb_emit_byte (mb, CEE_LDLEN);
6610 label3 = mono_mb_emit_branch (mb, CEE_BGE);
6611
6612 /* Emit marshalling code */
6613
6614 if (eklass == mono_defaults.stringbuilder_class) {
6615 gboolean need_free2;
6616 MonoMarshalConv conv = mono_marshal_get_ptr_to_stringbuilder_conv (m->piinfo, spec, &need_free2);
6617
6618 g_assert (conv != MONO_MARSHAL_CONV_INVALID);
6619
6620 /* dest */
6621 mono_mb_emit_ldarg (mb, argnum);
6622 if (t->byref)
6623 mono_mb_emit_byte (mb, CEE_LDIND_I);
6624 mono_mb_emit_ldloc (mb, index_var);
6625 mono_mb_emit_byte (mb, CEE_LDELEM_REF);
6626
6627 /* src */
6628 mono_mb_emit_ldloc (mb, src_ptr);
6629 mono_mb_emit_byte (mb, CEE_LDIND_I);
6630
6631 mono_mb_emit_icall (mb, conv_to_icall (conv, NULL));
6632
6633 if (need_free) {
6634 /* src */
6635 mono_mb_emit_ldloc (mb, src_ptr);
6636 mono_mb_emit_byte (mb, CEE_LDIND_I);
6637
6638 mono_mb_emit_icall (mb, mono_marshal_free);
6639 }
6640 }
6641 else if (eklass == mono_defaults.string_class) {
6642 if (need_free) {
6643 /* src */
6644 mono_mb_emit_ldloc (mb, src_ptr);
6645 mono_mb_emit_byte (mb, CEE_LDIND_I);
6646
6647 mono_mb_emit_icall (mb, mono_marshal_free);
6648 }
6649 }
6650 else {
6651 if (need_convert) {
6652 /* set the src_ptr */
6653 mono_mb_emit_ldloc (mb, src_ptr);
6654 mono_mb_emit_stloc (mb, 0);
6655
6656 /* set dst_ptr */
6657 mono_mb_emit_ldarg (mb, argnum);
6658 if (t->byref)
6659 mono_mb_emit_byte (mb, CEE_LDIND_REF);
6660 mono_mb_emit_ldloc (mb, index_var);
6661 mono_mb_emit_op (mb, CEE_LDELEMA, eklass);
6662 mono_mb_emit_stloc (mb, 1);
6663
6664 /* emit valuetype conversion code */
6665 emit_struct_conv_full (mb, eklass, TRUE, 0, eklass == mono_defaults.char_class ? encoding : (MonoMarshalNative)-1);
6666 }
6667
6668 if (need_free) {
6669 mono_mb_emit_ldloc (mb, src_ptr);
6670 mono_mb_emit_stloc (mb, loc);
6671 mono_mb_emit_ldloc (mb, loc);
6672
6673 emit_struct_free (mb, eklass, loc);
6674 }
6675 }
6676
6677 mono_mb_emit_add_to_local (mb, index_var, 1);
6678 mono_mb_emit_add_to_local (mb, src_ptr, esize);
6679
6680 mono_mb_emit_branch_label (mb, CEE_BR, label2);
6681
6682 mono_mb_patch_branch (mb, label1);
6683 mono_mb_patch_branch (mb, label3);
6684 }
6685
6686 if (klass->element_class->blittable) {
6687 /* free memory allocated (if any) by MONO_MARSHAL_CONV_ARRAY_LPARRAY */
6688
6689 mono_mb_emit_ldarg (mb, argnum);
6690 if (t->byref)
6691 mono_mb_emit_byte (mb, CEE_LDIND_REF);
6692 mono_mb_emit_ldloc (mb, conv_arg);
6693 mono_mb_emit_icall (mb, conv_to_icall (MONO_MARSHAL_FREE_LPARRAY, NULL));
6694 }
6695
6696 break;
6697
6698 case MARSHAL_ACTION_PUSH:
6699 if (t->byref)
6700 mono_mb_emit_ldloc_addr (mb, conv_arg);
6701 else
6702 mono_mb_emit_ldloc (mb, conv_arg);
6703 break;
6704
6705 case MARSHAL_ACTION_CONV_RESULT:
6706 /* fixme: we need conversions here */
6707 mono_mb_emit_stloc (mb, 3);
6708 break;
6709
6710 case MARSHAL_ACTION_MANAGED_CONV_IN: {
6711 MonoClass *eklass;
6712 guint32 label1, label2, label3;
6713 int index_var, src_ptr, esize, param_num, num_elem;
6714 MonoMarshalConv conv;
6715 gboolean is_string = FALSE;
6716
6717 conv_arg = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
6718 *conv_arg_type = &mono_defaults.int_class->byval_arg;
6719
6720 if (t->byref) {
6721 char *msg = g_strdup ("Byref array marshalling to managed code is not implemented.");
6722 mono_mb_emit_exception_marshal_directive (mb, msg);
6723 return conv_arg;
6724 }
6725 if (!spec) {
6726 char *msg = g_strdup ("[MarshalAs] attribute required to marshal arrays to managed code.");
6727 mono_mb_emit_exception_marshal_directive (mb, msg);
6728 return conv_arg;
6729 }
6730 if (spec->native != MONO_NATIVE_LPARRAY) {
6731 char *msg = g_strdup ("Non LPArray marshalling of arrays to managed code is not implemented.");
6732 mono_mb_emit_exception_marshal_directive (mb, msg);
6733 return conv_arg;
6734 }
6735
6736 /* FIXME: t is from the method which is wrapped, not the delegate type */
6737 /* g_assert (t->attrs & PARAM_ATTRIBUTE_IN); */
6738
6739 param_num = spec->data.array_data.param_num;
6740 num_elem = spec->data.array_data.num_elem;
6741 if (spec->data.array_data.elem_mult == 0)
6742 /* param_num is not specified */
6743 param_num = -1;
6744
6745 if (param_num == -1) {
6746 if (num_elem <= 0) {
6747 char *msg = g_strdup ("Either SizeConst or SizeParamIndex should be specified when marshalling arrays to managed code.");
6748 mono_mb_emit_exception_marshal_directive (mb, msg);
6749 return conv_arg;
6750 }
6751 }
6752
6753 /* FIXME: Optimize blittable case */
6754
6755 eklass = klass->element_class;
6756 if (eklass == mono_defaults.string_class) {
6757 is_string = TRUE;
6758 conv = mono_marshal_get_ptr_to_string_conv (m->piinfo, spec, &need_free);
6759 }
6760 else if (eklass == mono_defaults.stringbuilder_class) {
6761 is_string = TRUE;
6762 conv = mono_marshal_get_ptr_to_stringbuilder_conv (m->piinfo, spec, &need_free);
6763 }
6764 else
6765 conv = MONO_MARSHAL_CONV_INVALID;
6766
6767 mono_marshal_load_type_info (eklass);
6768
6769 if (is_string)
6770 esize = sizeof (gpointer);
6771 else
6772 esize = mono_class_native_size (eklass, NULL);
6773 src_ptr = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
6774
6775 mono_mb_emit_byte (mb, CEE_LDNULL);
6776 mono_mb_emit_stloc (mb, conv_arg);
6777
6778 /* Check param index */
6779 if (param_num != -1) {
6780 if (param_num >= m->sig->param_count) {
6781 char *msg = g_strdup ("Array size control parameter index is out of range.");
6782 mono_mb_emit_exception_marshal_directive (mb, msg);
6783 return conv_arg;
6784 }
6785 switch (m->sig->params [param_num]->type) {
6786 case MONO_TYPE_I1:
6787 case MONO_TYPE_U1:
6788 case MONO_TYPE_I2:
6789 case MONO_TYPE_U2:
6790 case MONO_TYPE_I4:
6791 case MONO_TYPE_U4:
6792 case MONO_TYPE_I:
6793 case MONO_TYPE_U:
6794 case MONO_TYPE_I8:
6795 case MONO_TYPE_U8:
6796 break;
6797 default: {
6798 char *msg = g_strdup ("Array size control parameter must be an integral type.");
6799 mono_mb_emit_exception_marshal_directive (mb, msg);
6800 return conv_arg;
6801 }
6802 }
6803 }
6804
6805 /* Check null */
6806 mono_mb_emit_ldarg (mb, argnum);
6807 label1 = mono_mb_emit_branch (mb, CEE_BRFALSE);
6808
6809 mono_mb_emit_ldarg (mb, argnum);
6810 mono_mb_emit_stloc (mb, src_ptr);
6811
6812 /* Create managed array */
6813 /*
6814 * The LPArray marshalling spec says that sometimes param_num starts
6815 * from 1, sometimes it starts from 0. But MS seems to allways start
6816 * from 0.
6817 */
6818
6819 if (param_num == -1) {
6820 mono_mb_emit_icon (mb, num_elem);
6821 } else {
6822 mono_mb_emit_ldarg (mb, param_num);
6823 if (num_elem > 0) {
6824 mono_mb_emit_icon (mb, num_elem);
6825 mono_mb_emit_byte (mb, CEE_ADD);
6826 }
6827 mono_mb_emit_byte (mb, CEE_CONV_OVF_I);
6828 }
6829
6830 mono_mb_emit_op (mb, CEE_NEWARR, eklass);
6831 mono_mb_emit_stloc (mb, conv_arg);
6832
6833 if (eklass->blittable) {
6834 mono_mb_emit_ldloc (mb, conv_arg);
6835 mono_mb_emit_byte (mb, CEE_CONV_I);
6836 mono_mb_emit_icon (mb, MONO_STRUCT_OFFSET (MonoArray, vector));
6837 mono_mb_emit_byte (mb, CEE_ADD);
6838 mono_mb_emit_ldarg (mb, argnum);
6839 mono_mb_emit_ldloc (mb, conv_arg);
6840 mono_mb_emit_byte (mb, CEE_LDLEN);
6841 mono_mb_emit_icon (mb, esize);
6842 mono_mb_emit_byte (mb, CEE_MUL);
6843 mono_mb_emit_byte (mb, CEE_PREFIX1);
6844 mono_mb_emit_byte (mb, CEE_CPBLK);
6845 mono_mb_patch_branch (mb, label1);
6846 break;
6847 }
6848
6849 /* Emit marshalling loop */
6850 index_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
6851 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
6852 mono_mb_emit_stloc (mb, index_var);
6853 label2 = mono_mb_get_label (mb);
6854 mono_mb_emit_ldloc (mb, index_var);
6855 mono_mb_emit_ldloc (mb, conv_arg);
6856 mono_mb_emit_byte (mb, CEE_LDLEN);
6857 label3 = mono_mb_emit_branch (mb, CEE_BGE);
6858
6859 /* Emit marshalling code */
6860 if (is_string) {
6861 g_assert (conv != MONO_MARSHAL_CONV_INVALID);
6862
6863 mono_mb_emit_ldloc (mb, conv_arg);
6864 mono_mb_emit_ldloc (mb, index_var);
6865
6866 mono_mb_emit_ldloc (mb, src_ptr);
6867 mono_mb_emit_byte (mb, CEE_LDIND_I);
6868
6869 mono_mb_emit_icall (mb, conv_to_icall (conv, NULL));
6870 mono_mb_emit_byte (mb, CEE_STELEM_REF);
6871 }
6872 else {
6873 char *msg = g_strdup ("Marshalling of non-string and non-blittable arrays to managed code is not implemented.");
6874 mono_mb_emit_exception_marshal_directive (mb, msg);
6875 return conv_arg;
6876 }
6877
6878 mono_mb_emit_add_to_local (mb, index_var, 1);
6879 mono_mb_emit_add_to_local (mb, src_ptr, esize);
6880
6881 mono_mb_emit_branch_label (mb, CEE_BR, label2);
6882
6883 mono_mb_patch_branch (mb, label1);
6884 mono_mb_patch_branch (mb, label3);
6885
6886 break;
6887 }
6888 case MARSHAL_ACTION_MANAGED_CONV_OUT: {
6889 MonoClass *eklass;
6890 guint32 label1, label2, label3;
6891 int index_var, dest_ptr, esize, param_num, num_elem;
6892 MonoMarshalConv conv;
6893 gboolean is_string = FALSE;
6894
6895 if (!spec)
6896 /* Already handled in CONV_IN */
6897 break;
6898
6899 /* These are already checked in CONV_IN */
6900 g_assert (!t->byref);
6901 g_assert (spec->native == MONO_NATIVE_LPARRAY);
6902 g_assert (t->attrs & PARAM_ATTRIBUTE_OUT);
6903
6904 param_num = spec->data.array_data.param_num;
6905 num_elem = spec->data.array_data.num_elem;
6906
6907 if (spec->data.array_data.elem_mult == 0)
6908 /* param_num is not specified */
6909 param_num = -1;
6910
6911 if (param_num == -1) {
6912 if (num_elem <= 0) {
6913 g_assert_not_reached ();
6914 }
6915 }
6916
6917 /* FIXME: Optimize blittable case */
6918
6919 eklass = klass->element_class;
6920 if (eklass == mono_defaults.string_class) {
6921 is_string = TRUE;
6922 conv = mono_marshal_get_string_to_ptr_conv (m->piinfo, spec);
6923 }
6924 else if (eklass == mono_defaults.stringbuilder_class) {
6925 is_string = TRUE;
6926 conv = mono_marshal_get_stringbuilder_to_ptr_conv (m->piinfo, spec);
6927 }
6928 else
6929 conv = MONO_MARSHAL_CONV_INVALID;
6930
6931 mono_marshal_load_type_info (eklass);
6932
6933 if (is_string)
6934 esize = sizeof (gpointer);
6935 else
6936 esize = mono_class_native_size (eklass, NULL);
6937
6938 dest_ptr = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
6939
6940 /* Check null */
6941 mono_mb_emit_ldloc (mb, conv_arg);
6942 label1 = mono_mb_emit_branch (mb, CEE_BRFALSE);
6943
6944 mono_mb_emit_ldarg (mb, argnum);
6945 mono_mb_emit_stloc (mb, dest_ptr);
6946
6947 if (eklass->blittable) {
6948 /* dest */
6949 mono_mb_emit_ldarg (mb, argnum);
6950 /* src */
6951 mono_mb_emit_ldloc (mb, conv_arg);
6952 mono_mb_emit_byte (mb, CEE_CONV_I);
6953 mono_mb_emit_icon (mb, MONO_STRUCT_OFFSET (MonoArray, vector));
6954 mono_mb_emit_byte (mb, CEE_ADD);
6955 /* length */
6956 mono_mb_emit_ldloc (mb, conv_arg);
6957 mono_mb_emit_byte (mb, CEE_LDLEN);
6958 mono_mb_emit_icon (mb, esize);
6959 mono_mb_emit_byte (mb, CEE_MUL);
6960 mono_mb_emit_byte (mb, CEE_PREFIX1);
6961 mono_mb_emit_byte (mb, CEE_CPBLK);
6962 break;
6963 }
6964
6965 /* Emit marshalling loop */
6966 index_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
6967 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
6968 mono_mb_emit_stloc (mb, index_var);
6969 label2 = mono_mb_get_label (mb);
6970 mono_mb_emit_ldloc (mb, index_var);
6971 mono_mb_emit_ldloc (mb, conv_arg);
6972 mono_mb_emit_byte (mb, CEE_LDLEN);
6973 label3 = mono_mb_emit_branch (mb, CEE_BGE);
6974
6975 /* Emit marshalling code */
6976 if (is_string) {
6977 int stind_op;
6978 g_assert (conv != MONO_MARSHAL_CONV_INVALID);
6979
6980 /* dest */
6981 mono_mb_emit_ldloc (mb, dest_ptr);
6982
6983 /* src */
6984 mono_mb_emit_ldloc (mb, conv_arg);
6985 mono_mb_emit_ldloc (mb, index_var);
6986
6987 mono_mb_emit_byte (mb, CEE_LDELEM_REF);
6988
6989 mono_mb_emit_icall (mb, conv_to_icall (conv, &stind_op));
6990 mono_mb_emit_byte (mb, stind_op);
6991 }
6992 else {
6993 char *msg = g_strdup ("Marshalling of non-string and non-blittable arrays to managed code is not implemented.");
6994 mono_mb_emit_exception_marshal_directive (mb, msg);
6995 return conv_arg;
6996 }
6997
6998 mono_mb_emit_add_to_local (mb, index_var, 1);
6999 mono_mb_emit_add_to_local (mb, dest_ptr, esize);
7000
7001 mono_mb_emit_branch_label (mb, CEE_BR, label2);
7002
7003 mono_mb_patch_branch (mb, label1);
7004 mono_mb_patch_branch (mb, label3);
7005
7006 break;
7007 }
7008 case MARSHAL_ACTION_MANAGED_CONV_RESULT: {
7009 MonoClass *eklass;
7010 guint32 label1, label2, label3;
7011 int index_var, src, dest, esize;
7012 MonoMarshalConv conv = MONO_MARSHAL_CONV_INVALID;
7013 gboolean is_string = FALSE;
7014
7015 g_assert (!t->byref);
7016
7017 eklass = klass->element_class;
7018
7019 mono_marshal_load_type_info (eklass);
7020
7021 if (eklass == mono_defaults.string_class) {
7022 is_string = TRUE;
7023 conv = mono_marshal_get_string_to_ptr_conv (m->piinfo, spec);
7024 }
7025 else {
7026 g_assert_not_reached ();
7027 }
7028
7029 if (is_string)
7030 esize = sizeof (gpointer);
7031 else if (eklass == mono_defaults.char_class)
7032 esize = mono_pinvoke_is_unicode (m->piinfo) ? 2 : 1;
7033 else
7034 esize = mono_class_native_size (eklass, NULL);
7035
7036 src = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
7037 dest = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
7038
7039 mono_mb_emit_stloc (mb, src);
7040 mono_mb_emit_ldloc (mb, src);
7041 mono_mb_emit_stloc (mb, 3);
7042
7043 /* Check for null */
7044 mono_mb_emit_ldloc (mb, src);
7045 label1 = mono_mb_emit_branch (mb, CEE_BRFALSE);
7046
7047 /* Allocate native array */
7048 mono_mb_emit_icon (mb, esize);
7049 mono_mb_emit_ldloc (mb, src);
7050 mono_mb_emit_byte (mb, CEE_LDLEN);
7051
7052 if (eklass == mono_defaults.string_class) {
7053 /* Make the array bigger for the terminating null */
7054 mono_mb_emit_byte (mb, CEE_LDC_I4_1);
7055 mono_mb_emit_byte (mb, CEE_ADD);
7056 }
7057 mono_mb_emit_byte (mb, CEE_MUL);
7058 mono_mb_emit_icall (mb, ves_icall_marshal_alloc);
7059 mono_mb_emit_stloc (mb, dest);
7060 mono_mb_emit_ldloc (mb, dest);
7061 mono_mb_emit_stloc (mb, 3);
7062
7063 /* Emit marshalling loop */
7064 index_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
7065 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
7066 mono_mb_emit_stloc (mb, index_var);
7067 label2 = mono_mb_get_label (mb);
7068 mono_mb_emit_ldloc (mb, index_var);
7069 mono_mb_emit_ldloc (mb, src);
7070 mono_mb_emit_byte (mb, CEE_LDLEN);
7071 label3 = mono_mb_emit_branch (mb, CEE_BGE);
7072
7073 /* Emit marshalling code */
7074 if (is_string) {
7075 int stind_op;
7076 g_assert (conv != MONO_MARSHAL_CONV_INVALID);
7077
7078 /* dest */
7079 mono_mb_emit_ldloc (mb, dest);
7080
7081 /* src */
7082 mono_mb_emit_ldloc (mb, src);
7083 mono_mb_emit_ldloc (mb, index_var);
7084
7085 mono_mb_emit_byte (mb, CEE_LDELEM_REF);
7086
7087 mono_mb_emit_icall (mb, conv_to_icall (conv, &stind_op));
7088 mono_mb_emit_byte (mb, stind_op);
7089 }
7090 else {
7091 char *msg = g_strdup ("Marshalling of non-string arrays to managed code is not implemented.");
7092 mono_mb_emit_exception_marshal_directive (mb, msg);
7093 return conv_arg;
7094 }
7095
7096 mono_mb_emit_add_to_local (mb, index_var, 1);
7097 mono_mb_emit_add_to_local (mb, dest, esize);
7098
7099 mono_mb_emit_branch_label (mb, CEE_BR, label2);
7100
7101 mono_mb_patch_branch (mb, label3);
7102 mono_mb_patch_branch (mb, label1);
7103 break;
7104 }
7105 default:
7106 g_assert_not_reached ();
7107 }
7108 #endif
7109 return conv_arg;
7110 }
7111
7112 static MonoType*
7113 marshal_boolean_conv_in_get_local_type (MonoMarshalSpec *spec, guint8 *ldc_op /*out*/)
7114 {
7115 if (spec == NULL) {
7116 return &mono_defaults.int32_class->byval_arg;
7117 } else {
7118 switch (spec->native) {
7119 case MONO_NATIVE_I1:
7120 case MONO_NATIVE_U1:
7121 return &mono_defaults.byte_class->byval_arg;
7122 case MONO_NATIVE_VARIANTBOOL:
7123 if (ldc_op) *ldc_op = CEE_LDC_I4_M1;
7124 return &mono_defaults.int16_class->byval_arg;
7125 case MONO_NATIVE_BOOLEAN:
7126 return &mono_defaults.int32_class->byval_arg;
7127 default:
7128 g_warning ("marshalling bool as native type %x is currently not supported", spec->native);
7129 return &mono_defaults.int32_class->byval_arg;
7130 }
7131 }
7132 }
7133
7134 static MonoClass*
7135 marshal_boolean_managed_conv_in_get_conv_arg_class (MonoMarshalSpec *spec, guint8 *ldop/*out*/)
7136 {
7137 MonoClass* conv_arg_class = mono_defaults.int32_class;
7138 if (spec) {
7139 switch (spec->native) {
7140 case MONO_NATIVE_I1:
7141 case MONO_NATIVE_U1:
7142 conv_arg_class = mono_defaults.byte_class;
7143 if (ldop) *ldop = CEE_LDIND_I1;
7144 break;
7145 case MONO_NATIVE_VARIANTBOOL:
7146 conv_arg_class = mono_defaults.int16_class;
7147 if (ldop) *ldop = CEE_LDIND_I2;
7148 break;
7149 case MONO_NATIVE_BOOLEAN:
7150 break;
7151 default:
7152 g_warning ("marshalling bool as native type %x is currently not supported", spec->native);
7153 }
7154 }
7155 return conv_arg_class;
7156 }
7157
7158 static int
7159 emit_marshal_boolean (EmitMarshalContext *m, int argnum, MonoType *t,
7160 MonoMarshalSpec *spec,
7161 int conv_arg, MonoType **conv_arg_type,
7162 MarshalAction action)
7163 {
7164 #ifdef DISABLE_JIT
7165 switch (action) {
7166 case MARSHAL_ACTION_CONV_IN:
7167 if (t->byref)
7168 *conv_arg_type = &mono_defaults.int_class->byval_arg;
7169 else
7170 *conv_arg_type = marshal_boolean_conv_in_get_local_type (spec, NULL);
7171 break;
7172
7173 case MARSHAL_ACTION_MANAGED_CONV_IN: {
7174 MonoClass* conv_arg_class = marshal_boolean_managed_conv_in_get_conv_arg_class (spec, NULL);
7175 if (t->byref)
7176 *conv_arg_type = &conv_arg_class->this_arg;
7177 else
7178 *conv_arg_type = &conv_arg_class->byval_arg;
7179 break;
7180 }
7181
7182 }
7183 #else
7184 MonoMethodBuilder *mb = m->mb;
7185
7186 switch (action) {
7187 case MARSHAL_ACTION_CONV_IN: {
7188 MonoType *local_type;
7189 int label_false;
7190 guint8 ldc_op = CEE_LDC_I4_1;
7191
7192 local_type = marshal_boolean_conv_in_get_local_type (spec, &ldc_op);
7193 if (t->byref)
7194 *conv_arg_type = &mono_defaults.int_class->byval_arg;
7195 else
7196 *conv_arg_type = local_type;
7197 conv_arg = mono_mb_add_local (mb, local_type);
7198
7199 mono_mb_emit_ldarg (mb, argnum);
7200 if (t->byref)
7201 mono_mb_emit_byte (mb, CEE_LDIND_I1);
7202 label_false = mono_mb_emit_branch (mb, CEE_BRFALSE);
7203 mono_mb_emit_byte (mb, ldc_op);
7204 mono_mb_emit_stloc (mb, conv_arg);
7205 mono_mb_patch_branch (mb, label_false);
7206
7207 break;
7208 }
7209
7210 case MARSHAL_ACTION_CONV_OUT:
7211 {
7212 int label_false, label_end;
7213 if (!t->byref)
7214 break;
7215
7216 mono_mb_emit_ldarg (mb, argnum);
7217 mono_mb_emit_ldloc (mb, conv_arg);
7218
7219 label_false = mono_mb_emit_branch (mb, CEE_BRFALSE);
7220 mono_mb_emit_byte (mb, CEE_LDC_I4_1);
7221
7222 label_end = mono_mb_emit_branch (mb, CEE_BR);
7223 mono_mb_patch_branch (mb, label_false);
7224 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
7225 mono_mb_patch_branch (mb, label_end);
7226
7227 mono_mb_emit_byte (mb, CEE_STIND_I1);
7228 break;
7229 }
7230
7231 case MARSHAL_ACTION_PUSH:
7232 if (t->byref)
7233 mono_mb_emit_ldloc_addr (mb, conv_arg);
7234 else if (conv_arg)
7235 mono_mb_emit_ldloc (mb, conv_arg);
7236 else
7237 mono_mb_emit_ldarg (mb, argnum);
7238 break;
7239
7240 case MARSHAL_ACTION_CONV_RESULT:
7241 /* maybe we need to make sure that it fits within 8 bits */
7242 mono_mb_emit_stloc (mb, 3);
7243 break;
7244
7245 case MARSHAL_ACTION_MANAGED_CONV_IN: {
7246 MonoClass* conv_arg_class = mono_defaults.int32_class;
7247 guint8 ldop = CEE_LDIND_I4;
7248 int label_null, label_false;
7249
7250 conv_arg_class = marshal_boolean_managed_conv_in_get_conv_arg_class (spec, &ldop);
7251 conv_arg = mono_mb_add_local (mb, &mono_defaults.boolean_class->byval_arg);
7252
7253 if (t->byref)
7254 *conv_arg_type = &conv_arg_class->this_arg;
7255 else
7256 *conv_arg_type = &conv_arg_class->byval_arg;
7257
7258
7259 mono_mb_emit_ldarg (mb, argnum);
7260
7261 /* Check null */
7262 if (t->byref) {
7263 label_null = mono_mb_emit_branch (mb, CEE_BRFALSE);
7264 mono_mb_emit_ldarg (mb, argnum);
7265 mono_mb_emit_byte (mb, ldop);
7266 } else
7267 label_null = 0;
7268
7269 label_false = mono_mb_emit_branch (mb, CEE_BRFALSE);
7270 mono_mb_emit_byte (mb, CEE_LDC_I4_1);
7271 mono_mb_emit_stloc (mb, conv_arg);
7272 mono_mb_patch_branch (mb, label_false);
7273
7274 if (t->byref)
7275 mono_mb_patch_branch (mb, label_null);
7276 break;
7277 }
7278
7279 case MARSHAL_ACTION_MANAGED_CONV_OUT: {
7280 guint8 stop = CEE_STIND_I4;
7281 guint8 ldc_op = CEE_LDC_I4_1;
7282 int label_null,label_false, label_end;;
7283
7284 if (!t->byref)
7285 break;
7286 if (spec) {
7287 switch (spec->native) {
7288 case MONO_NATIVE_I1:
7289 case MONO_NATIVE_U1:
7290 stop = CEE_STIND_I1;
7291 break;
7292 case MONO_NATIVE_VARIANTBOOL:
7293 stop = CEE_STIND_I2;
7294 ldc_op = CEE_LDC_I4_M1;
7295 break;
7296 default:
7297 break;
7298 }
7299 }
7300
7301 /* Check null */
7302 mono_mb_emit_ldarg (mb, argnum);
7303 label_null = mono_mb_emit_branch (mb, CEE_BRFALSE);
7304
7305 mono_mb_emit_ldarg (mb, argnum);
7306 mono_mb_emit_ldloc (mb, conv_arg);
7307
7308 label_false = mono_mb_emit_branch (mb, CEE_BRFALSE);
7309 mono_mb_emit_byte (mb, ldc_op);
7310 label_end = mono_mb_emit_branch (mb, CEE_BR);
7311
7312 mono_mb_patch_branch (mb, label_false);
7313 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
7314 mono_mb_patch_branch (mb, label_end);
7315
7316 mono_mb_emit_byte (mb, stop);
7317 mono_mb_patch_branch (mb, label_null);
7318 break;
7319 }
7320
7321 default:
7322 g_assert_not_reached ();
7323 }
7324 #endif
7325 return conv_arg;
7326 }
7327
7328 static int
7329 emit_marshal_ptr (EmitMarshalContext *m, int argnum, MonoType *t,
7330 MonoMarshalSpec *spec, int conv_arg,
7331 MonoType **conv_arg_type, MarshalAction action)
7332 {
7333 #ifndef DISABLE_JIT
7334 MonoMethodBuilder *mb = m->mb;
7335
7336 switch (action) {
7337 case MARSHAL_ACTION_CONV_IN:
7338 /* MS seems to allow this in some cases, ie. bxc #158 */
7339 /*
7340 if (MONO_TYPE_ISSTRUCT (t->data.type) && !mono_class_from_mono_type (t->data.type)->blittable) {
7341 char *msg = g_strdup_printf ("Can not marshal 'parameter #%d': Pointers can not reference marshaled structures. Use byref instead.", argnum + 1);
7342 mono_mb_emit_exception_marshal_directive (m->mb, msg);
7343 }
7344 */
7345 break;
7346
7347 case MARSHAL_ACTION_PUSH:
7348 mono_mb_emit_ldarg (mb, argnum);
7349 break;
7350
7351 case MARSHAL_ACTION_CONV_RESULT:
7352 /* no conversions necessary */
7353 mono_mb_emit_stloc (mb, 3);
7354 break;
7355
7356 default:
7357 break;
7358 }
7359 #endif
7360 return conv_arg;
7361 }
7362
7363 static int
7364 emit_marshal_char (EmitMarshalContext *m, int argnum, MonoType *t,
7365 MonoMarshalSpec *spec, int conv_arg,
7366 MonoType **conv_arg_type, MarshalAction action)
7367 {
7368 #ifndef DISABLE_JIT
7369 MonoMethodBuilder *mb = m->mb;
7370
7371 switch (action) {
7372 case MARSHAL_ACTION_PUSH:
7373 /* fixme: dont know how to marshal that. We cant simply
7374 * convert it to a one byte UTF8 character, because an
7375 * unicode character may need more that one byte in UTF8 */
7376 mono_mb_emit_ldarg (mb, argnum);
7377 break;
7378
7379 case MARSHAL_ACTION_CONV_RESULT:
7380 /* fixme: we need conversions here */
7381 mono_mb_emit_stloc (mb, 3);
7382 break;
7383
7384 default:
7385 break;
7386 }
7387 #endif
7388 return conv_arg;
7389 }
7390
7391 static int
7392 emit_marshal_scalar (EmitMarshalContext *m, int argnum, MonoType *t,
7393 MonoMarshalSpec *spec, int conv_arg,
7394 MonoType **conv_arg_type, MarshalAction action)
7395 {
7396 #ifndef DISABLE_JIT
7397 MonoMethodBuilder *mb = m->mb;
7398
7399 switch (action) {
7400 case MARSHAL_ACTION_PUSH:
7401 mono_mb_emit_ldarg (mb, argnum);
7402 break;
7403
7404 case MARSHAL_ACTION_CONV_RESULT:
7405 /* no conversions necessary */
7406 mono_mb_emit_stloc (mb, 3);
7407 break;
7408
7409 default:
7410 break;
7411 }
7412 #endif
7413 return conv_arg;
7414 }
7415
7416 static int
7417 emit_marshal (EmitMarshalContext *m, int argnum, MonoType *t,
7418 MonoMarshalSpec *spec, int conv_arg,
7419 MonoType **conv_arg_type, MarshalAction action)
7420 {
7421 /* Ensure that we have marshalling info for this param */
7422 mono_marshal_load_type_info (mono_class_from_mono_type (t));
7423
7424 if (spec && spec->native == MONO_NATIVE_CUSTOM)
7425 return emit_marshal_custom (m, argnum, t, spec, conv_arg, conv_arg_type, action);
7426
7427 if (spec && spec->native == MONO_NATIVE_ASANY)
7428 return emit_marshal_asany (m, argnum, t, spec, conv_arg, conv_arg_type, action);
7429
7430 switch (t->type) {
7431 case MONO_TYPE_VALUETYPE:
7432 if (t->data.klass == mono_defaults.handleref_class)
7433 return emit_marshal_handleref (m, argnum, t, spec, conv_arg, conv_arg_type, action);
7434
7435 return emit_marshal_vtype (m, argnum, t, spec, conv_arg, conv_arg_type, action);
7436 case MONO_TYPE_STRING:
7437 return emit_marshal_string (m, argnum, t, spec, conv_arg, conv_arg_type, action);
7438 case MONO_TYPE_CLASS:
7439 case MONO_TYPE_OBJECT:
7440 #if !defined(DISABLE_COM) && !defined(DISABLE_JIT)
7441 if (spec && spec->native == MONO_NATIVE_STRUCT)
7442 return emit_marshal_variant (m, argnum, t, spec, conv_arg, conv_arg_type, action);
7443 #endif
7444
7445 #if !defined(DISABLE_COM)
7446 if (spec && (spec->native == MONO_NATIVE_IUNKNOWN ||
7447 spec->native == MONO_NATIVE_IDISPATCH ||
7448 spec->native == MONO_NATIVE_INTERFACE))
7449 return mono_cominterop_emit_marshal_com_interface (m, argnum, t, spec, conv_arg, conv_arg_type, action);
7450 if (spec && (spec->native == MONO_NATIVE_SAFEARRAY) &&
7451 (spec->data.safearray_data.elem_type == MONO_VARIANT_VARIANT) &&
7452 ((action == MARSHAL_ACTION_CONV_OUT) || (action == MARSHAL_ACTION_CONV_IN) || (action == MARSHAL_ACTION_PUSH)))
7453 return mono_cominterop_emit_marshal_safearray (m, argnum, t, spec, conv_arg, conv_arg_type, action);
7454 #endif
7455
7456 if (mono_class_try_get_safehandle_class () != NULL && t->data.klass &&
7457 mono_class_is_subclass_of (t->data.klass, mono_class_try_get_safehandle_class (), FALSE))
7458 return emit_marshal_safehandle (m, argnum, t, spec, conv_arg, conv_arg_type, action);
7459
7460 return emit_marshal_object (m, argnum, t, spec, conv_arg, conv_arg_type, action);
7461 case MONO_TYPE_ARRAY:
7462 case MONO_TYPE_SZARRAY:
7463 return emit_marshal_array (m, argnum, t, spec, conv_arg, conv_arg_type, action);
7464 case MONO_TYPE_BOOLEAN:
7465 return emit_marshal_boolean (m, argnum, t, spec, conv_arg, conv_arg_type, action);
7466 case MONO_TYPE_PTR:
7467 return emit_marshal_ptr (m, argnum, t, spec, conv_arg, conv_arg_type, action);
7468 case MONO_TYPE_CHAR:
7469 return emit_marshal_char (m, argnum, t, spec, conv_arg, conv_arg_type, action);
7470 case MONO_TYPE_I1:
7471 case MONO_TYPE_U1:
7472 case MONO_TYPE_I2:
7473 case MONO_TYPE_U2:
7474 case MONO_TYPE_I4:
7475 case MONO_TYPE_U4:
7476 case MONO_TYPE_I:
7477 case MONO_TYPE_U:
7478 case MONO_TYPE_R4:
7479 case MONO_TYPE_R8:
7480 case MONO_TYPE_I8:
7481 case MONO_TYPE_U8:
7482 case MONO_TYPE_FNPTR:
7483 return emit_marshal_scalar (m, argnum, t, spec, conv_arg, conv_arg_type, action);
7484 case MONO_TYPE_GENERICINST:
7485 if (mono_type_generic_inst_is_valuetype (t))
7486 return emit_marshal_vtype (m, argnum, t, spec, conv_arg, conv_arg_type, action);
7487 else
7488 return emit_marshal_object (m, argnum, t, spec, conv_arg, conv_arg_type, action);
7489 default:
7490 return conv_arg;
7491 }
7492 }
7493
7494 /* How the arguments of an icall should be wrapped */
7495 typedef enum {
7496 /* Don't wrap at all, pass the argument as is */
7497 ICALL_HANDLES_WRAP_NONE,
7498 /* Wrap the argument in an object handle, pass the handle to the icall */
7499 ICALL_HANDLES_WRAP_OBJ,
7500 /* Wrap the argument in an object handle, pass the handle to the icall,
7501 write the value out from the handle when the icall returns */
7502 ICALL_HANDLES_WRAP_OBJ_INOUT,
7503 /* Wrap the argument (a valuetype reference) in a handle to pin its enclosing object,
7504 but pass the raw reference to the icall */
7505 ICALL_HANDLES_WRAP_VALUETYPE_REF,
7506 } IcallHandlesWrap;
7507
7508 typedef struct {
7509 IcallHandlesWrap wrap;
7510 /* if wrap is NONE or OBJ or VALUETYPE_REF, this is not meaningful.
7511 if wrap is OBJ_INOUT it's the local var that holds the MonoObjectHandle.
7512 */
7513 int handle;
7514 } IcallHandlesLocal;
7515
7516 /*
7517 * Describes how to wrap the given parameter.
7518 *
7519 */
7520 static IcallHandlesWrap
7521 signature_param_uses_handles (MonoMethodSignature *sig, int param)
7522 {
7523 if (MONO_TYPE_IS_REFERENCE (sig->params [param])) {
7524 return mono_signature_param_is_out (sig, param) ? ICALL_HANDLES_WRAP_OBJ_INOUT : ICALL_HANDLES_WRAP_OBJ;
7525 } else if (mono_type_is_byref (sig->params [param]))
7526 return ICALL_HANDLES_WRAP_VALUETYPE_REF;
7527 else
7528 return ICALL_HANDLES_WRAP_NONE;
7529 }
7530
7531
7532 #ifndef DISABLE_JIT
7533 /**
7534 * mono_marshal_emit_native_wrapper:
7535 * @image: the image to use for looking up custom marshallers
7536 * @sig: The signature of the native function
7537 * @piinfo: Marshalling information
7538 * @mspecs: Marshalling information
7539 * @aot: whenever the created method will be compiled by the AOT compiler
7540 * @method: if non-NULL, the pinvoke method to call
7541 * @check_exceptions: Whenever to check for pending exceptions after the native call
7542 * @func_param: the function to call is passed as a boxed IntPtr as the first parameter
7543 *
7544 * generates IL code for the pinvoke wrapper, the generated code calls @func.
7545 */
7546 void
7547 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)
7548 {
7549 EmitMarshalContext m;
7550 MonoMethodSignature *csig;
7551 MonoClass *klass;
7552 int i, argnum, *tmp_locals;
7553 int type, param_shift = 0;
7554 int coop_gc_stack_dummy, coop_gc_var;
7555
7556 memset (&m, 0, sizeof (m));
7557 m.mb = mb;
7558 m.sig = sig;
7559 m.piinfo = piinfo;
7560
7561 /* we copy the signature, so that we can set pinvoke to 0 */
7562 if (func_param) {
7563 /* The function address is passed as the first argument */
7564 g_assert (!sig->hasthis);
7565 param_shift += 1;
7566 }
7567 csig = mono_metadata_signature_dup_full (mb->method->klass->image, sig);
7568 csig->pinvoke = 1;
7569 m.csig = csig;
7570 m.image = image;
7571
7572 if (sig->hasthis)
7573 param_shift += 1;
7574
7575 /* we allocate local for use with emit_struct_conv() */
7576 /* allocate local 0 (pointer) src_ptr */
7577 mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
7578 /* allocate local 1 (pointer) dst_ptr */
7579 mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
7580 /* allocate local 2 (boolean) delete_old */
7581 mono_mb_add_local (mb, &mono_defaults.boolean_class->byval_arg);
7582
7583 /* delete_old = FALSE */
7584 mono_mb_emit_icon (mb, 0);
7585 mono_mb_emit_stloc (mb, 2);
7586
7587 if (!MONO_TYPE_IS_VOID (sig->ret)) {
7588 /* allocate local 3 to store the return value */
7589 mono_mb_add_local (mb, sig->ret);
7590 }
7591
7592 if (mono_threads_is_coop_enabled ()) {
7593 /* local 4, dummy local used to get a stack address for suspend funcs */
7594 coop_gc_stack_dummy = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
7595 /* local 5, the local to be used when calling the suspend funcs */
7596 coop_gc_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
7597 }
7598
7599 /*
7600 * cookie = mono_threads_enter_gc_safe_region_unbalanced (ref dummy);
7601 *
7602 * ret = method (...);
7603 *
7604 * mono_threads_exit_gc_safe_region_unbalanced (cookie, ref dummy);
7605 *
7606 * <interrupt check>
7607 *
7608 * return ret;
7609 */
7610
7611 if (MONO_TYPE_ISSTRUCT (sig->ret))
7612 m.vtaddr_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
7613
7614 if (mspecs [0] && mspecs [0]->native == MONO_NATIVE_CUSTOM) {
7615 /* Return type custom marshaling */
7616 /*
7617 * Since we can't determine the return type of the unmanaged function,
7618 * we assume it returns a pointer, and pass that pointer to
7619 * MarshalNativeToManaged.
7620 */
7621 csig->ret = &mono_defaults.int_class->byval_arg;
7622 }
7623
7624 /* we first do all conversions */
7625 tmp_locals = (int *)alloca (sizeof (int) * sig->param_count);
7626 m.orig_conv_args = (int *)alloca (sizeof (int) * (sig->param_count + 1));
7627
7628 for (i = 0; i < sig->param_count; i ++) {
7629 tmp_locals [i] = emit_marshal (&m, i + param_shift, sig->params [i], mspecs [i + 1], 0, &csig->params [i], MARSHAL_ACTION_CONV_IN);
7630 }
7631
7632 // In coop mode need to register blocking state during native call
7633 if (mono_threads_is_coop_enabled ()) {
7634 // Perform an extra, early lookup of the function address, so any exceptions
7635 // potentially resulting from the lookup occur before entering blocking mode.
7636 if (!func_param && !MONO_CLASS_IS_IMPORT (mb->method->klass) && aot) {
7637 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
7638 mono_mb_emit_op (mb, CEE_MONO_ICALL_ADDR, &piinfo->method);
7639 mono_mb_emit_byte (mb, CEE_POP); // Result not needed yet
7640 }
7641
7642 mono_mb_emit_ldloc_addr (mb, coop_gc_stack_dummy);
7643 mono_mb_emit_icall (mb, mono_threads_enter_gc_safe_region_unbalanced);
7644 mono_mb_emit_stloc (mb, coop_gc_var);
7645 }
7646
7647 /* push all arguments */
7648
7649 if (sig->hasthis)
7650 mono_mb_emit_byte (mb, CEE_LDARG_0);
7651
7652 for (i = 0; i < sig->param_count; i++) {
7653 emit_marshal (&m, i + param_shift, sig->params [i], mspecs [i + 1], tmp_locals [i], NULL, MARSHAL_ACTION_PUSH);
7654 }
7655
7656 /* call the native method */
7657 if (func_param) {
7658 mono_mb_emit_byte (mb, CEE_LDARG_0);
7659 mono_mb_emit_op (mb, CEE_UNBOX, mono_defaults.int_class);
7660 mono_mb_emit_byte (mb, CEE_LDIND_I);
7661 mono_mb_emit_calli (mb, csig);
7662 } else if (MONO_CLASS_IS_IMPORT (mb->method->klass)) {
7663 #ifndef DISABLE_COM
7664 mono_mb_emit_cominterop_call (mb, csig, &piinfo->method);
7665 #else
7666 g_assert_not_reached ();
7667 #endif
7668 } else {
7669 if (aot) {
7670 /* Reuse the ICALL_ADDR opcode for pinvokes too */
7671 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
7672 mono_mb_emit_op (mb, CEE_MONO_ICALL_ADDR, &piinfo->method);
7673 mono_mb_emit_calli (mb, csig);
7674 } else {
7675 mono_mb_emit_native_call (mb, csig, func);
7676 }
7677 }
7678
7679 /* Set LastError if needed */
7680 if (piinfo->piflags & PINVOKE_ATTRIBUTE_SUPPORTS_LAST_ERROR) {
7681 #ifdef TARGET_WIN32
7682 if (!aot) {
7683 static MonoMethodSignature *get_last_error_sig = NULL;
7684 if (!get_last_error_sig) {
7685 get_last_error_sig = mono_metadata_signature_alloc (mono_defaults.corlib, 0);
7686 get_last_error_sig->ret = &mono_defaults.int_class->byval_arg;
7687 get_last_error_sig->pinvoke = 1;
7688 }
7689
7690 /*
7691 * Have to call GetLastError () early and without a wrapper, since various runtime components could
7692 * clobber its value.
7693 */
7694 mono_mb_emit_native_call (mb, get_last_error_sig, GetLastError);
7695 mono_mb_emit_icall (mb, mono_marshal_set_last_error_windows);
7696 } else {
7697 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
7698 mono_mb_emit_byte (mb, CEE_MONO_GET_LAST_ERROR);
7699 mono_mb_emit_icall (mb, mono_marshal_set_last_error_windows);
7700 }
7701 #else
7702 mono_mb_emit_icall (mb, mono_marshal_set_last_error);
7703 #endif
7704 }
7705
7706 if (MONO_TYPE_ISSTRUCT (sig->ret)) {
7707 MonoClass *klass = mono_class_from_mono_type (sig->ret);
7708 mono_class_init (klass);
7709 if (!(mono_class_is_explicit_layout (klass) || klass->blittable)) {
7710 /* This is used by emit_marshal_vtype (), but it needs to go right before the call */
7711 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
7712 mono_mb_emit_byte (mb, CEE_MONO_VTADDR);
7713 mono_mb_emit_stloc (mb, m.vtaddr_var);
7714 }
7715 }
7716
7717 /* Unblock before converting the result, since that can involve calls into the runtime */
7718 if (mono_threads_is_coop_enabled ()) {
7719 mono_mb_emit_ldloc (mb, coop_gc_var);
7720 mono_mb_emit_ldloc_addr (mb, coop_gc_stack_dummy);
7721 mono_mb_emit_icall (mb, mono_threads_exit_gc_safe_region_unbalanced);
7722 }
7723
7724 /* convert the result */
7725 if (!sig->ret->byref) {
7726 MonoMarshalSpec *spec = mspecs [0];
7727 type = sig->ret->type;
7728
7729 if (spec && spec->native == MONO_NATIVE_CUSTOM) {
7730 emit_marshal (&m, 0, sig->ret, spec, 0, NULL, MARSHAL_ACTION_CONV_RESULT);
7731 } else {
7732 handle_enum:
7733 switch (type) {
7734 case MONO_TYPE_VOID:
7735 break;
7736 case MONO_TYPE_VALUETYPE:
7737 klass = sig->ret->data.klass;
7738 if (klass->enumtype) {
7739 type = mono_class_enum_basetype (sig->ret->data.klass)->type;
7740 goto handle_enum;
7741 }
7742 emit_marshal (&m, 0, sig->ret, spec, 0, NULL, MARSHAL_ACTION_CONV_RESULT);
7743 break;
7744 case MONO_TYPE_I1:
7745 case MONO_TYPE_U1:
7746 case MONO_TYPE_I2:
7747 case MONO_TYPE_U2:
7748 case MONO_TYPE_I4:
7749 case MONO_TYPE_U4:
7750 case MONO_TYPE_I:
7751 case MONO_TYPE_U:
7752 case MONO_TYPE_R4:
7753 case MONO_TYPE_R8:
7754 case MONO_TYPE_I8:
7755 case MONO_TYPE_U8:
7756 case MONO_TYPE_FNPTR:
7757 case MONO_TYPE_STRING:
7758 case MONO_TYPE_CLASS:
7759 case MONO_TYPE_OBJECT:
7760 case MONO_TYPE_BOOLEAN:
7761 case MONO_TYPE_ARRAY:
7762 case MONO_TYPE_SZARRAY:
7763 case MONO_TYPE_CHAR:
7764 case MONO_TYPE_PTR:
7765 case MONO_TYPE_GENERICINST:
7766 emit_marshal (&m, 0, sig->ret, spec, 0, NULL, MARSHAL_ACTION_CONV_RESULT);
7767 break;
7768 case MONO_TYPE_TYPEDBYREF:
7769 default:
7770 g_warning ("return type 0x%02x unknown", sig->ret->type);
7771 g_assert_not_reached ();
7772 }
7773 }
7774 } else {
7775 mono_mb_emit_stloc (mb, 3);
7776 }
7777
7778 /*
7779 * Need to call this after converting the result since MONO_VTADDR needs
7780 * to be adjacent to the call instruction.
7781 */
7782 if (check_exceptions)
7783 emit_thread_interrupt_checkpoint (mb);
7784
7785 /* we need to convert byref arguments back and free string arrays */
7786 for (i = 0; i < sig->param_count; i++) {
7787 MonoType *t = sig->params [i];
7788 MonoMarshalSpec *spec = mspecs [i + 1];
7789
7790 argnum = i + param_shift;
7791
7792 if (spec && ((spec->native == MONO_NATIVE_CUSTOM) || (spec->native == MONO_NATIVE_ASANY))) {
7793 emit_marshal (&m, argnum, t, spec, tmp_locals [i], NULL, MARSHAL_ACTION_CONV_OUT);
7794 continue;
7795 }
7796
7797 switch (t->type) {
7798 case MONO_TYPE_STRING:
7799 case MONO_TYPE_VALUETYPE:
7800 case MONO_TYPE_CLASS:
7801 case MONO_TYPE_OBJECT:
7802 case MONO_TYPE_SZARRAY:
7803 case MONO_TYPE_BOOLEAN:
7804 emit_marshal (&m, argnum, t, spec, tmp_locals [i], NULL, MARSHAL_ACTION_CONV_OUT);
7805 break;
7806 default:
7807 break;
7808 }
7809 }
7810
7811 if (!MONO_TYPE_IS_VOID(sig->ret))
7812 mono_mb_emit_ldloc (mb, 3);
7813
7814 mono_mb_emit_byte (mb, CEE_RET);
7815 }
7816 #endif /* DISABLE_JIT */
7817
7818 /**
7819 * mono_marshal_get_native_wrapper:
7820 * @method: The MonoMethod to wrap.
7821 * @check_exceptions: Whenever to check for pending exceptions
7822 *
7823 * generates IL code for the pinvoke wrapper (the generated method
7824 * calls the unmanaged code in piinfo->addr)
7825 */
7826 MonoMethod *
7827 mono_marshal_get_native_wrapper (MonoMethod *method, gboolean check_exceptions, gboolean aot)
7828 {
7829 MonoMethodSignature *sig, *csig;
7830 MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *) method;
7831 MonoMethodBuilder *mb;
7832 MonoMarshalSpec **mspecs;
7833 MonoMethod *res;
7834 GHashTable *cache;
7835 gboolean pinvoke = FALSE;
7836 gpointer iter;
7837 int i;
7838 const char *exc_class = "MissingMethodException";
7839 const char *exc_arg = NULL;
7840 WrapperInfo *info;
7841
7842 g_assert (method != NULL);
7843 g_assert (mono_method_signature (method)->pinvoke);
7844
7845 GHashTable **cache_ptr;
7846
7847 if (aot) {
7848 if (check_exceptions)
7849 cache_ptr = &mono_method_get_wrapper_cache (method)->native_wrapper_aot_check_cache;
7850 else
7851 cache_ptr = &mono_method_get_wrapper_cache (method)->native_wrapper_aot_cache;
7852 } else {
7853 if (check_exceptions)
7854 cache_ptr = &mono_method_get_wrapper_cache (method)->native_wrapper_check_cache;
7855 else
7856 cache_ptr = &mono_method_get_wrapper_cache (method)->native_wrapper_cache;
7857 }
7858
7859 cache = get_cache (cache_ptr, mono_aligned_addr_hash, NULL);
7860
7861 if ((res = mono_marshal_find_in_cache (cache, method)))
7862 return res;
7863
7864 if (MONO_CLASS_IS_IMPORT (method->klass)) {
7865 /* The COM code is not AOT compatible, it calls mono_custom_attrs_get_attr_checked () */
7866 if (aot)
7867 return method;
7868 #ifndef DISABLE_COM
7869 return mono_cominterop_get_native_wrapper (method);
7870 #else
7871 g_assert_not_reached ();
7872 #endif
7873 }
7874
7875 sig = mono_method_signature (method);
7876
7877 if (!(method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) &&
7878 (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL))
7879 pinvoke = TRUE;
7880
7881 if (!piinfo->addr) {
7882 if (pinvoke) {
7883 if (method->iflags & METHOD_IMPL_ATTRIBUTE_NATIVE)
7884 exc_arg = "Method contains unsupported native code";
7885 else if (!aot)
7886 mono_lookup_pinvoke_call (method, &exc_class, &exc_arg);
7887 } else {
7888 piinfo->addr = mono_lookup_internal_call (method);
7889 }
7890 }
7891
7892 /* hack - redirect certain string constructors to CreateString */
7893 if (piinfo->addr == ves_icall_System_String_ctor_RedirectToCreateString) {
7894 g_assert (!pinvoke);
7895 g_assert (method->string_ctor);
7896 g_assert (sig->hasthis);
7897
7898 /* CreateString returns a value */
7899 csig = mono_metadata_signature_dup_full (method->klass->image, sig);
7900 csig->ret = &mono_defaults.string_class->byval_arg;
7901 csig->pinvoke = 0;
7902
7903 iter = NULL;
7904 while ((res = mono_class_get_methods (mono_defaults.string_class, &iter))) {
7905 if (!strcmp ("CreateString", res->name) &&
7906 mono_metadata_signature_equal (csig, mono_method_signature (res))) {
7907 WrapperInfo *info;
7908
7909 g_assert (!(res->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL));
7910 g_assert (!(res->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL));
7911
7912 /* create a wrapper to preserve .ctor in stack trace */
7913 mb = mono_mb_new (method->klass, method->name, MONO_WRAPPER_MANAGED_TO_MANAGED);
7914
7915 #ifndef DISABLE_JIT
7916 mono_mb_emit_byte (mb, CEE_LDARG_0);
7917 for (i = 1; i <= csig->param_count; i++)
7918 mono_mb_emit_ldarg (mb, i);
7919 mono_mb_emit_managed_call (mb, res, NULL);
7920 mono_mb_emit_byte (mb, CEE_RET);
7921 #endif
7922
7923 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_STRING_CTOR);
7924 info->d.string_ctor.method = method;
7925
7926 /* use native_wrapper_cache because internal calls are looked up there */
7927 res = mono_mb_create_and_cache_full (cache, method, mb, csig,
7928 csig->param_count + 1, info, NULL);
7929 mono_mb_free (mb);
7930
7931 return res;
7932 }
7933 }
7934
7935 /* exception will be thrown */
7936 piinfo->addr = NULL;
7937 g_warning ("cannot find CreateString for .ctor");
7938 }
7939
7940 mb = mono_mb_new (method->klass, method->name, MONO_WRAPPER_MANAGED_TO_NATIVE);
7941
7942 mb->method->save_lmf = 1;
7943
7944 /*
7945 * In AOT mode and embedding scenarios, it is possible that the icall is not
7946 * registered in the runtime doing the AOT compilation.
7947 */
7948 if (!piinfo->addr && !aot) {
7949 #ifndef DISABLE_JIT
7950 mono_mb_emit_exception (mb, exc_class, exc_arg);
7951 #endif
7952 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_NONE);
7953 info->d.managed_to_native.method = method;
7954
7955 csig = mono_metadata_signature_dup_full (method->klass->image, sig);
7956 csig->pinvoke = 0;
7957 res = mono_mb_create_and_cache_full (cache, method, mb, csig,
7958 csig->param_count + 16, info, NULL);
7959 mono_mb_free (mb);
7960
7961 return res;
7962 }
7963
7964 /* internal calls: we simply push all arguments and call the method (no conversions) */
7965 if (method->iflags & (METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL | METHOD_IMPL_ATTRIBUTE_RUNTIME)) {
7966 if (sig->hasthis)
7967 csig = mono_metadata_signature_dup_add_this (method->klass->image, sig, method->klass);
7968 else
7969 csig = mono_metadata_signature_dup_full (method->klass->image, sig);
7970
7971 //printf ("%s\n", mono_method_full_name (method, 1));
7972
7973 /* hack - string constructors returns a value */
7974 if (method->string_ctor)
7975 csig->ret = &mono_defaults.string_class->byval_arg;
7976
7977 #ifndef DISABLE_JIT
7978 // FIXME:
7979 MonoClass *handle_stack_mark_class;
7980 MonoClass *error_class;
7981 int thread_info_var = -1, stack_mark_var = -1, error_var = -1;
7982 MonoMethodSignature *call_sig = csig;
7983 gboolean uses_handles = FALSE;
7984 gboolean save_handles_to_locals = FALSE;
7985 IcallHandlesLocal *handles_locals = NULL;
7986 (void) mono_lookup_internal_call_full (method, &uses_handles);
7987
7988
7989 /* If it uses handles and MonoError, it had better check exceptions */
7990 g_assert (!uses_handles || check_exceptions);
7991
7992 if (uses_handles) {
7993 MonoMethodSignature *ret;
7994
7995 /* Add a MonoError argument and figure out which args need to be wrapped in handles */
7996 // FIXME: The stuff from mono_metadata_signature_dup_internal_with_padding ()
7997 ret = mono_metadata_signature_alloc (method->klass->image, csig->param_count + 1);
7998
7999 ret->param_count = csig->param_count + 1;
8000 ret->ret = csig->ret;
8001
8002 handles_locals = g_new0 (IcallHandlesLocal, csig->param_count);
8003 for (int i = 0; i < csig->param_count; ++i) {
8004 IcallHandlesWrap w = signature_param_uses_handles (csig, i);
8005 handles_locals [i].wrap = w;
8006 switch (w) {
8007 case ICALL_HANDLES_WRAP_OBJ:
8008 case ICALL_HANDLES_WRAP_OBJ_INOUT:
8009 ret->params [i] = mono_class_get_byref_type (mono_class_from_mono_type(csig->params[i]));
8010 if (w == ICALL_HANDLES_WRAP_OBJ_INOUT)
8011 save_handles_to_locals = TRUE;
8012 break;
8013 case ICALL_HANDLES_WRAP_NONE:
8014 case ICALL_HANDLES_WRAP_VALUETYPE_REF:
8015 ret->params [i] = csig->params [i];
8016 break;
8017 default:
8018 g_assert_not_reached ();
8019 }
8020 }
8021 /* Add MonoError* param */
8022 ret->params [csig->param_count] = &mono_get_intptr_class ()->byval_arg;
8023 ret->pinvoke = csig->pinvoke;
8024
8025 call_sig = ret;
8026 }
8027
8028 if (uses_handles) {
8029 handle_stack_mark_class = mono_class_load_from_name (mono_get_corlib (), "Mono", "RuntimeStructs/HandleStackMark");
8030 error_class = mono_class_load_from_name (mono_get_corlib (), "Mono", "RuntimeStructs/MonoError");
8031
8032 thread_info_var = mono_mb_add_local (mb, &mono_get_intptr_class ()->byval_arg);
8033 stack_mark_var = mono_mb_add_local (mb, &handle_stack_mark_class->byval_arg);
8034 error_var = mono_mb_add_local (mb, &error_class->byval_arg);
8035
8036 if (save_handles_to_locals) {
8037 /* add a local var to hold the handles for each out arg */
8038 for (int i = 0; i < sig->param_count; ++i) {
8039 int j = i + sig->hasthis;
8040 switch (handles_locals[j].wrap) {
8041 case ICALL_HANDLES_WRAP_NONE:
8042 case ICALL_HANDLES_WRAP_OBJ:
8043 case ICALL_HANDLES_WRAP_VALUETYPE_REF:
8044 handles_locals [j].handle = -1;
8045 break;
8046 case ICALL_HANDLES_WRAP_OBJ_INOUT:
8047 handles_locals [j].handle = mono_mb_add_local (mb, sig->params [i]);
8048 break;
8049 default:
8050 g_assert_not_reached ();
8051 }
8052 }
8053 }
8054 }
8055
8056 if (sig->hasthis) {
8057 int pos;
8058
8059 /*
8060 * Add a null check since public icalls can be called with 'call' which
8061 * does no such check.
8062 */
8063 mono_mb_emit_byte (mb, CEE_LDARG_0);
8064 pos = mono_mb_emit_branch (mb, CEE_BRTRUE);
8065 mono_mb_emit_exception (mb, "NullReferenceException", NULL);
8066 mono_mb_patch_branch (mb, pos);
8067 }
8068
8069 if (uses_handles) {
8070 mono_mb_emit_ldloc_addr (mb, stack_mark_var);
8071 mono_mb_emit_ldloc_addr (mb, error_var);
8072 mono_mb_emit_icall (mb, mono_icall_start);
8073 mono_mb_emit_stloc (mb, thread_info_var);
8074
8075 if (sig->hasthis) {
8076 mono_mb_emit_byte (mb, CEE_LDARG_0);
8077 /* TODO support adding wrappers to non-static struct methods */
8078 g_assert (!mono_class_is_valuetype(mono_method_get_class (method)));
8079 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
8080 mono_mb_emit_icall (mb, mono_handle_new_full);
8081 }
8082 for (i = 0; i < sig->param_count; i++) {
8083 /* load each argument. references into the managed heap get wrapped in handles */
8084 int j = i + sig->hasthis;
8085 switch (handles_locals[j].wrap) {
8086 case ICALL_HANDLES_WRAP_NONE:
8087 mono_mb_emit_ldarg (mb, j);
8088 break;
8089 case ICALL_HANDLES_WRAP_OBJ:
8090 /* argI = mono_handle_new_full (argI_raw, FALSE) */
8091 mono_mb_emit_ldarg (mb, j);
8092 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
8093 mono_mb_emit_icall (mb, mono_handle_new_full);
8094 break;
8095 case ICALL_HANDLES_WRAP_OBJ_INOUT:
8096 /* handleI = argI = mono_handle_new_full (NULL, FALSE) */
8097 mono_mb_emit_byte (mb, CEE_LDNULL);
8098 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
8099 mono_mb_emit_icall (mb, mono_handle_new_full);
8100 /* tmp = argI */
8101 mono_mb_emit_byte (mb, CEE_DUP);
8102 /* handleI = tmp */
8103 mono_mb_emit_stloc (mb, handles_locals[j].handle);
8104 break;
8105 case ICALL_HANDLES_WRAP_VALUETYPE_REF:
8106 /* (void) mono_handle_new_full (argI, TRUE); argI */
8107 mono_mb_emit_ldarg (mb, j);
8108 mono_mb_emit_byte (mb, CEE_DUP);
8109 mono_mb_emit_byte (mb, CEE_LDC_I4_1);
8110 mono_mb_emit_icall (mb, mono_handle_new_full);
8111 mono_mb_emit_byte (mb, CEE_POP);
8112 #if 0
8113 fprintf (stderr, " Method %s.%s.%s has byref valuetype argument %d\n", method->klass->name_space, method->klass->name, method->name, i);
8114 #endif
8115 break;
8116 default:
8117 g_assert_not_reached ();
8118 }
8119 }
8120 mono_mb_emit_ldloc_addr (mb, error_var);
8121 } else {
8122 if (sig->hasthis)
8123 mono_mb_emit_byte (mb, CEE_LDARG_0);
8124 for (i = 0; i < sig->param_count; i++)
8125 mono_mb_emit_ldarg (mb, i + sig->hasthis);
8126 }
8127
8128 if (aot) {
8129 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
8130 mono_mb_emit_op (mb, CEE_MONO_ICALL_ADDR, &piinfo->method);
8131 mono_mb_emit_calli (mb, call_sig);
8132 } else {
8133 g_assert (piinfo->addr);
8134 mono_mb_emit_native_call (mb, call_sig, piinfo->addr);
8135 }
8136
8137 if (uses_handles) {
8138 if (MONO_TYPE_IS_REFERENCE (sig->ret)) {
8139 // if (ret != NULL_HANDLE) {
8140 // ret = MONO_HANDLE_RAW(ret)
8141 // }
8142 mono_mb_emit_byte (mb, CEE_DUP);
8143 int pos = mono_mb_emit_branch (mb, CEE_BRFALSE);
8144 mono_mb_emit_ldflda (mb, MONO_HANDLE_PAYLOAD_OFFSET (MonoObject));
8145 mono_mb_emit_byte (mb, CEE_LDIND_REF);
8146 mono_mb_patch_branch (mb, pos);
8147 }
8148 if (save_handles_to_locals) {
8149 for (i = 0; i < sig->param_count; i++) {
8150 int j = i + sig->hasthis;
8151 switch (handles_locals [j].wrap) {
8152 case ICALL_HANDLES_WRAP_NONE:
8153 case ICALL_HANDLES_WRAP_OBJ:
8154 case ICALL_HANDLES_WRAP_VALUETYPE_REF:
8155 break;
8156 case ICALL_HANDLES_WRAP_OBJ_INOUT:
8157 /* *argI_raw = MONO_HANDLE_RAW (handleI) */
8158
8159 /* argI_raw */
8160 mono_mb_emit_ldarg (mb, j);
8161 /* handleI */
8162 mono_mb_emit_ldloc (mb, handles_locals [j].handle);
8163 /* MONO_HANDLE_RAW(handleI) */
8164 mono_mb_emit_ldflda (mb, MONO_HANDLE_PAYLOAD_OFFSET (MonoObject));
8165 mono_mb_emit_byte (mb, CEE_LDIND_REF);
8166 /* *argI_raw = MONO_HANDLE_RAW(handleI) */
8167 mono_mb_emit_byte (mb, CEE_STIND_REF);
8168 break;
8169 default:
8170 g_assert_not_reached ();
8171 }
8172 }
8173 }
8174 g_free (handles_locals);
8175
8176 mono_mb_emit_ldloc (mb, thread_info_var);
8177 mono_mb_emit_ldloc_addr (mb, stack_mark_var);
8178 mono_mb_emit_ldloc_addr (mb, error_var);
8179 mono_mb_emit_icall (mb, mono_icall_end);
8180 }
8181
8182 if (check_exceptions)
8183 emit_thread_interrupt_checkpoint (mb);
8184 mono_mb_emit_byte (mb, CEE_RET);
8185 #endif
8186 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_NONE);
8187 info->d.managed_to_native.method = method;
8188
8189 csig = mono_metadata_signature_dup_full (method->klass->image, csig);
8190 csig->pinvoke = 0;
8191 res = mono_mb_create_and_cache_full (cache, method, mb, csig, csig->param_count + 16,
8192 info, NULL);
8193
8194 mono_mb_free (mb);
8195 return res;
8196 }
8197
8198 g_assert (pinvoke);
8199 if (!aot)
8200 g_assert (piinfo->addr);
8201
8202 #ifndef DISABLE_JIT
8203 mspecs = g_new (MonoMarshalSpec*, sig->param_count + 1);
8204 mono_method_get_marshal_info (method, mspecs);
8205
8206 mono_marshal_emit_native_wrapper (mb->method->klass->image, mb, sig, piinfo, mspecs, piinfo->addr, aot, check_exceptions, FALSE);
8207 #endif
8208 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_PINVOKE);
8209 info->d.managed_to_native.method = method;
8210
8211 csig = mono_metadata_signature_dup_full (method->klass->image, sig);
8212 csig->pinvoke = 0;
8213 res = mono_mb_create_and_cache_full (cache, method, mb, csig, csig->param_count + 16,
8214 info, NULL);
8215 mono_mb_free (mb);
8216
8217 #ifndef DISABLE_JIT
8218 for (i = sig->param_count; i >= 0; i--)
8219 if (mspecs [i])
8220 mono_metadata_free_marshal_spec (mspecs [i]);
8221 g_free (mspecs);
8222 #endif
8223
8224 /* mono_method_print_code (res); */
8225
8226 return res;
8227 }
8228
8229 /**
8230 * mono_marshal_get_native_func_wrapper:
8231 * @image: The image to use for memory allocation and for looking up custom marshallers.
8232 * @sig: The signature of the function
8233 * @func: The native function to wrap
8234 *
8235 * Returns a wrapper method around native functions, similar to the pinvoke
8236 * wrapper.
8237 */
8238 MonoMethod *
8239 mono_marshal_get_native_func_wrapper (MonoImage *image, MonoMethodSignature *sig,
8240 MonoMethodPInvoke *piinfo, MonoMarshalSpec **mspecs, gpointer func)
8241 {
8242 MonoMethodSignature *csig;
8243
8244 SignaturePointerPair key, *new_key;
8245 MonoMethodBuilder *mb;
8246 MonoMethod *res;
8247 GHashTable *cache;
8248 gboolean found;
8249 char *name;
8250
8251 key.sig = sig;
8252 key.pointer = func;
8253
8254 // Generic types are not safe to place in MonoImage caches.
8255 g_assert (!sig->is_inflated);
8256
8257 cache = get_cache (&image->native_func_wrapper_cache, signature_pointer_pair_hash, signature_pointer_pair_equal);
8258 if ((res = mono_marshal_find_in_cache (cache, &key)))
8259 return res;
8260
8261 name = g_strdup_printf ("wrapper_native_%p", func);
8262 mb = mono_mb_new (mono_defaults.object_class, name, MONO_WRAPPER_MANAGED_TO_NATIVE);
8263 mb->method->save_lmf = 1;
8264
8265 #ifndef DISABLE_JIT
8266 mono_marshal_emit_native_wrapper (image, mb, sig, piinfo, mspecs, func, FALSE, TRUE, FALSE);
8267 #endif
8268
8269 csig = mono_metadata_signature_dup_full (image, sig);
8270 csig->pinvoke = 0;
8271
8272 new_key = g_new (SignaturePointerPair,1);
8273 new_key->sig = csig;
8274 new_key->pointer = func;
8275
8276 res = mono_mb_create_and_cache_full (cache, new_key, mb, csig, csig->param_count + 16, NULL, &found);
8277 if (found)
8278 g_free (new_key);
8279
8280 mono_mb_free (mb);
8281
8282 mono_marshal_set_wrapper_info (res, NULL);
8283
8284 return res;
8285 }
8286
8287 /*
8288 * The wrapper receives the native function as a boxed IntPtr as its 'this' argument. This is easier to support in
8289 * AOT.
8290 */
8291 MonoMethod*
8292 mono_marshal_get_native_func_wrapper_aot (MonoClass *klass)
8293 {
8294 MonoMethodSignature *sig, *csig;
8295 MonoMethodBuilder *mb;
8296 MonoMethod *res;
8297 GHashTable *cache;
8298 char *name;
8299 WrapperInfo *info;
8300 MonoMethodPInvoke mpiinfo;
8301 MonoMethodPInvoke *piinfo = &mpiinfo;
8302 MonoMarshalSpec **mspecs;
8303 MonoMethod *invoke = mono_get_delegate_invoke (klass);
8304 MonoImage *image = invoke->klass->image;
8305 int i;
8306
8307 // FIXME: include UnmanagedFunctionPointerAttribute info
8308
8309 /*
8310 * The wrapper is associated with the delegate type, to pick up the marshalling info etc.
8311 */
8312 cache = get_cache (&mono_method_get_wrapper_cache (invoke)->native_func_wrapper_aot_cache, mono_aligned_addr_hash, NULL);
8313
8314 if ((res = mono_marshal_find_in_cache (cache, invoke)))
8315 return res;
8316
8317 memset (&mpiinfo, 0, sizeof (mpiinfo));
8318 parse_unmanaged_function_pointer_attr (klass, &mpiinfo);
8319
8320 mspecs = g_new0 (MonoMarshalSpec*, mono_method_signature (invoke)->param_count + 1);
8321 mono_method_get_marshal_info (invoke, mspecs);
8322 /* Freed below so don't alloc from mempool */
8323 sig = mono_metadata_signature_dup (mono_method_signature (invoke));
8324 sig->hasthis = 0;
8325
8326 name = g_strdup_printf ("wrapper_aot_native");
8327 mb = mono_mb_new (invoke->klass, name, MONO_WRAPPER_MANAGED_TO_NATIVE);
8328 mb->method->save_lmf = 1;
8329
8330 #ifndef DISABLE_JIT
8331 mono_marshal_emit_native_wrapper (image, mb, sig, piinfo, mspecs, NULL, FALSE, TRUE, TRUE);
8332 #endif
8333
8334 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_NATIVE_FUNC_AOT);
8335 info->d.managed_to_native.method = invoke;
8336
8337 g_assert (!sig->hasthis);
8338 csig = mono_metadata_signature_dup_add_this (image, sig, mono_defaults.object_class);
8339 csig->pinvoke = 0;
8340 res = mono_mb_create_and_cache_full (cache, invoke,
8341 mb, csig, csig->param_count + 16,
8342 info, NULL);
8343 mono_mb_free (mb);
8344
8345 for (i = mono_method_signature (invoke)->param_count; i >= 0; i--)
8346 if (mspecs [i])
8347 mono_metadata_free_marshal_spec (mspecs [i]);
8348 g_free (mspecs);
8349 g_free (sig);
8350
8351 return res;
8352 }
8353
8354 /*
8355 * mono_marshal_emit_managed_wrapper:
8356 *
8357 * Emit the body of a native-to-managed wrapper. INVOKE_SIG is the signature of
8358 * the delegate which wraps the managed method to be called. For closed delegates,
8359 * it could have fewer parameters than the method it wraps.
8360 * THIS_LOC is the memory location where the target of the delegate is stored.
8361 */
8362 void
8363 mono_marshal_emit_managed_wrapper (MonoMethodBuilder *mb, MonoMethodSignature *invoke_sig, MonoMarshalSpec **mspecs, EmitMarshalContext* m, MonoMethod *method, uint32_t target_handle)
8364 {
8365 #ifdef DISABLE_JIT
8366 MonoMethodSignature *sig, *csig;
8367 int i;
8368
8369 sig = m->sig;
8370 csig = m->csig;
8371
8372 /* we first do all conversions */
8373 for (i = 0; i < sig->param_count; i ++) {
8374 MonoType *t = sig->params [i];
8375
8376 switch (t->type) {
8377 case MONO_TYPE_OBJECT:
8378 case MONO_TYPE_CLASS:
8379 case MONO_TYPE_VALUETYPE:
8380 case MONO_TYPE_ARRAY:
8381 case MONO_TYPE_SZARRAY:
8382 case MONO_TYPE_STRING:
8383 case MONO_TYPE_BOOLEAN:
8384 emit_marshal (m, i, sig->params [i], mspecs [i + 1], 0, &csig->params [i], MARSHAL_ACTION_MANAGED_CONV_IN);
8385 }
8386 }
8387
8388 if (!sig->ret->byref) {
8389 switch (sig->ret->type) {
8390 case MONO_TYPE_STRING:
8391 csig->ret = &mono_defaults.int_class->byval_arg;
8392 break;
8393 default:
8394 break;
8395 }
8396 }
8397 #else
8398 MonoMethodSignature *sig, *csig;
8399 MonoExceptionClause *clauses, *clause_finally, *clause_catch;
8400 int i, *tmp_locals, ex_local, e_local, attach_cookie_local, attach_dummy_local;
8401 int leave_try_pos, leave_catch_pos, ex_m1_pos;
8402 gboolean closed = FALSE;
8403
8404 sig = m->sig;
8405 csig = m->csig;
8406
8407 /* allocate local 0 (pointer) src_ptr */
8408 mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
8409 /* allocate local 1 (pointer) dst_ptr */
8410 mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
8411 /* allocate local 2 (boolean) delete_old */
8412 mono_mb_add_local (mb, &mono_defaults.boolean_class->byval_arg);
8413
8414 if (!sig->hasthis && sig->param_count != invoke_sig->param_count) {
8415 /* Closed delegate */
8416 g_assert (sig->param_count == invoke_sig->param_count + 1);
8417 closed = TRUE;
8418 /* Use a new signature without the first argument */
8419 sig = mono_metadata_signature_dup (sig);
8420 memmove (&sig->params [0], &sig->params [1], (sig->param_count - 1) * sizeof (MonoType*));
8421 sig->param_count --;
8422 }
8423
8424 if (!MONO_TYPE_IS_VOID(sig->ret)) {
8425 /* allocate local 3 to store the return value */
8426 mono_mb_add_local (mb, sig->ret);
8427 }
8428
8429 if (MONO_TYPE_ISSTRUCT (sig->ret))
8430 m->vtaddr_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
8431
8432 ex_local = mono_mb_add_local (mb, &mono_defaults.uint32_class->byval_arg);
8433 e_local = mono_mb_add_local (mb, &mono_defaults.exception_class->byval_arg);
8434
8435 attach_cookie_local = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
8436 attach_dummy_local = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
8437
8438 /*
8439 * guint32 ex = -1;
8440 * try {
8441 * // does (STARTING|RUNNING|BLOCKING) -> RUNNING + set/switch domain
8442 * mono_threads_attach_coop ();
8443 *
8444 * <interrupt check>
8445 *
8446 * ret = method (...);
8447 * } catch (Exception e) {
8448 * ex = mono_gchandle_new (e, false);
8449 * } finally {
8450 * // does RUNNING -> (RUNNING|BLOCKING) + unset/switch domain
8451 * mono_threads_detach_coop ();
8452 *
8453 * if (ex != -1)
8454 * mono_marshal_ftnptr_eh_callback (ex);
8455 * }
8456 *
8457 * return ret;
8458 */
8459
8460 clauses = g_new0 (MonoExceptionClause, 2);
8461
8462 clause_catch = &clauses [0];
8463 clause_catch->flags = MONO_EXCEPTION_CLAUSE_NONE;
8464 clause_catch->data.catch_class = mono_defaults.exception_class;
8465
8466 clause_finally = &clauses [1];
8467 clause_finally->flags = MONO_EXCEPTION_CLAUSE_FINALLY;
8468
8469 mono_mb_emit_icon (mb, 0);
8470 mono_mb_emit_stloc (mb, 2);
8471
8472 mono_mb_emit_icon (mb, -1);
8473 mono_mb_emit_byte (mb, CEE_CONV_U4);
8474 mono_mb_emit_stloc (mb, ex_local);
8475
8476 /* try { */
8477 clause_catch->try_offset = clause_finally->try_offset = mono_mb_get_label (mb);
8478
8479 if (!mono_threads_is_coop_enabled ()) {
8480 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
8481 mono_mb_emit_byte (mb, CEE_MONO_JIT_ATTACH);
8482 } else {
8483 /* mono_threads_attach_coop (); */
8484 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
8485 mono_mb_emit_byte (mb, CEE_MONO_LDDOMAIN);
8486 mono_mb_emit_ldloc_addr (mb, attach_dummy_local);
8487 mono_mb_emit_icall (mb, mono_threads_attach_coop);
8488 mono_mb_emit_stloc (mb, attach_cookie_local);
8489 }
8490
8491 /* <interrupt check> */
8492 emit_thread_interrupt_checkpoint (mb);
8493
8494 /* we first do all conversions */
8495 tmp_locals = (int *)alloca (sizeof (int) * sig->param_count);
8496 for (i = 0; i < sig->param_count; i ++) {
8497 MonoType *t = sig->params [i];
8498
8499 switch (t->type) {
8500 case MONO_TYPE_OBJECT:
8501 case MONO_TYPE_CLASS:
8502 case MONO_TYPE_VALUETYPE:
8503 case MONO_TYPE_ARRAY:
8504 case MONO_TYPE_SZARRAY:
8505 case MONO_TYPE_STRING:
8506 case MONO_TYPE_BOOLEAN:
8507 tmp_locals [i] = emit_marshal (m, i, sig->params [i], mspecs [i + 1], 0, &csig->params [i], MARSHAL_ACTION_MANAGED_CONV_IN);
8508
8509 break;
8510 default:
8511 tmp_locals [i] = 0;
8512 break;
8513 }
8514 }
8515
8516 if (sig->hasthis) {
8517 if (target_handle) {
8518 mono_mb_emit_icon (mb, (gint32)target_handle);
8519 mono_mb_emit_icall (mb, mono_gchandle_get_target);
8520 } else {
8521 /* fixme: */
8522 g_assert_not_reached ();
8523 }
8524 } else if (closed) {
8525 mono_mb_emit_icon (mb, (gint32)target_handle);
8526 mono_mb_emit_icall (mb, mono_gchandle_get_target);
8527 }
8528
8529 for (i = 0; i < sig->param_count; i++) {
8530 MonoType *t = sig->params [i];
8531
8532 if (tmp_locals [i]) {
8533 if (t->byref)
8534 mono_mb_emit_ldloc_addr (mb, tmp_locals [i]);
8535 else
8536 mono_mb_emit_ldloc (mb, tmp_locals [i]);
8537 }
8538 else
8539 mono_mb_emit_ldarg (mb, i);
8540 }
8541
8542 /* ret = method (...) */
8543 mono_mb_emit_managed_call (mb, method, NULL);
8544
8545 if (MONO_TYPE_ISSTRUCT (sig->ret)) {
8546 MonoClass *klass = mono_class_from_mono_type (sig->ret);
8547 mono_class_init (klass);
8548 if (!(mono_class_is_explicit_layout (klass) || klass->blittable)) {
8549 /* This is used by emit_marshal_vtype (), but it needs to go right before the call */
8550 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
8551 mono_mb_emit_byte (mb, CEE_MONO_VTADDR);
8552 mono_mb_emit_stloc (mb, m->vtaddr_var);
8553 }
8554 }
8555
8556 if (mspecs [0] && mspecs [0]->native == MONO_NATIVE_CUSTOM) {
8557 emit_marshal (m, 0, sig->ret, mspecs [0], 0, NULL, MARSHAL_ACTION_MANAGED_CONV_RESULT);
8558 } else if (!sig->ret->byref) {
8559 switch (sig->ret->type) {
8560 case MONO_TYPE_VOID:
8561 break;
8562 case MONO_TYPE_BOOLEAN:
8563 case MONO_TYPE_I1:
8564 case MONO_TYPE_U1:
8565 case MONO_TYPE_CHAR:
8566 case MONO_TYPE_I2:
8567 case MONO_TYPE_U2:
8568 case MONO_TYPE_I4:
8569 case MONO_TYPE_U4:
8570 case MONO_TYPE_I:
8571 case MONO_TYPE_U:
8572 case MONO_TYPE_PTR:
8573 case MONO_TYPE_R4:
8574 case MONO_TYPE_R8:
8575 case MONO_TYPE_I8:
8576 case MONO_TYPE_U8:
8577 case MONO_TYPE_OBJECT:
8578 mono_mb_emit_stloc (mb, 3);
8579 break;
8580 case MONO_TYPE_STRING:
8581 csig->ret = &mono_defaults.int_class->byval_arg;
8582 emit_marshal (m, 0, sig->ret, mspecs [0], 0, NULL, MARSHAL_ACTION_MANAGED_CONV_RESULT);
8583 break;
8584 case MONO_TYPE_VALUETYPE:
8585 case MONO_TYPE_CLASS:
8586 case MONO_TYPE_SZARRAY:
8587 emit_marshal (m, 0, sig->ret, mspecs [0], 0, NULL, MARSHAL_ACTION_MANAGED_CONV_RESULT);
8588 break;
8589 default:
8590 g_warning ("return type 0x%02x unknown", sig->ret->type);
8591 g_assert_not_reached ();
8592 }
8593 } else {
8594 mono_mb_emit_stloc (mb, 3);
8595 }
8596
8597 /* Convert byref arguments back */
8598 for (i = 0; i < sig->param_count; i ++) {
8599 MonoType *t = sig->params [i];
8600 MonoMarshalSpec *spec = mspecs [i + 1];
8601
8602 if (spec && spec->native == MONO_NATIVE_CUSTOM) {
8603 emit_marshal (m, i, t, mspecs [i + 1], tmp_locals [i], NULL, MARSHAL_ACTION_MANAGED_CONV_OUT);
8604 }
8605 else if (t->byref) {
8606 switch (t->type) {
8607 case MONO_TYPE_CLASS:
8608 case MONO_TYPE_VALUETYPE:
8609 case MONO_TYPE_OBJECT:
8610 case MONO_TYPE_STRING:
8611 case MONO_TYPE_BOOLEAN:
8612 emit_marshal (m, i, t, mspecs [i + 1], tmp_locals [i], NULL, MARSHAL_ACTION_MANAGED_CONV_OUT);
8613 break;
8614 default:
8615 break;
8616 }
8617 }
8618 else if (invoke_sig->params [i]->attrs & PARAM_ATTRIBUTE_OUT) {
8619 /* The [Out] information is encoded in the delegate signature */
8620 switch (t->type) {
8621 case MONO_TYPE_SZARRAY:
8622 case MONO_TYPE_CLASS:
8623 case MONO_TYPE_VALUETYPE:
8624 emit_marshal (m, i, invoke_sig->params [i], mspecs [i + 1], tmp_locals [i], NULL, MARSHAL_ACTION_MANAGED_CONV_OUT);
8625 break;
8626 default:
8627 g_assert_not_reached ();
8628 }
8629 }
8630 }
8631
8632 leave_try_pos = mono_mb_emit_branch (mb, CEE_LEAVE);
8633
8634 /* } [endtry] */
8635
8636 /* catch (Exception e) { */
8637 clause_catch->try_len = mono_mb_get_label (mb) - clause_catch->try_offset;
8638 clause_catch->handler_offset = mono_mb_get_label (mb);
8639
8640 mono_mb_emit_stloc (mb, e_local);
8641
8642 /* ex = mono_gchandle_new (e, false); */
8643 mono_mb_emit_ldloc (mb, e_local);
8644 mono_mb_emit_icon (mb, 0);
8645 mono_mb_emit_icall (mb, mono_gchandle_new);
8646 mono_mb_emit_stloc (mb, ex_local);
8647
8648 leave_catch_pos = mono_mb_emit_branch (mb, CEE_LEAVE);
8649
8650 /* } [endcatch] */
8651 clause_catch->handler_len = mono_mb_get_pos (mb) - clause_catch->handler_offset;
8652
8653 /* finally { */
8654 clause_finally->try_len = mono_mb_get_label (mb) - clause_finally->try_offset;
8655 clause_finally->handler_offset = mono_mb_get_label (mb);
8656
8657 if (!mono_threads_is_coop_enabled ()) {
8658 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
8659 mono_mb_emit_byte (mb, CEE_MONO_JIT_DETACH);
8660 } else {
8661 /* mono_threads_detach_coop (); */
8662 mono_mb_emit_ldloc (mb, attach_cookie_local);
8663 mono_mb_emit_ldloc_addr (mb, attach_dummy_local);
8664 mono_mb_emit_icall (mb, mono_threads_detach_coop);
8665 }
8666
8667 /* if (ex != -1) */
8668 mono_mb_emit_ldloc (mb, ex_local);
8669 mono_mb_emit_icon (mb, -1);
8670 mono_mb_emit_byte (mb, CEE_CONV_U4);
8671 ex_m1_pos = mono_mb_emit_branch (mb, CEE_BEQ);
8672
8673 /* mono_marshal_ftnptr_eh_callback (ex) */
8674 mono_mb_emit_ldloc (mb, ex_local);
8675 mono_mb_emit_icall (mb, mono_marshal_ftnptr_eh_callback);
8676
8677 /* [ex == -1] */
8678 mono_mb_patch_branch (mb, ex_m1_pos);
8679
8680 mono_mb_emit_byte (mb, CEE_ENDFINALLY);
8681
8682 /* } [endfinally] */
8683 clause_finally->handler_len = mono_mb_get_pos (mb) - clause_finally->handler_offset;
8684
8685 mono_mb_patch_branch (mb, leave_try_pos);
8686 mono_mb_patch_branch (mb, leave_catch_pos);
8687
8688 /* return ret; */
8689 if (m->retobj_var) {
8690 mono_mb_emit_ldloc (mb, m->retobj_var);
8691 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
8692 mono_mb_emit_op (mb, CEE_MONO_RETOBJ, m->retobj_class);
8693 }
8694 else {
8695 if (!MONO_TYPE_IS_VOID(sig->ret))
8696 mono_mb_emit_ldloc (mb, 3);
8697 mono_mb_emit_byte (mb, CEE_RET);
8698 }
8699
8700 mono_mb_set_clauses (mb, 2, clauses);
8701
8702 if (closed)
8703 g_free (sig);
8704 #endif
8705 }
8706
8707 static void
8708 mono_marshal_set_callconv_from_modopt (MonoMethod *method, MonoMethodSignature *csig)
8709 {
8710 MonoMethodSignature *sig;
8711 int i;
8712
8713 #ifdef TARGET_WIN32
8714 /*
8715 * Under windows, delegates passed to native code must use the STDCALL
8716 * calling convention.
8717 */
8718 csig->call_convention = MONO_CALL_STDCALL;
8719 #endif
8720
8721 sig = mono_method_signature (method);
8722
8723 /* Change default calling convention if needed */
8724 /* Why is this a modopt ? */
8725 if (sig->ret && sig->ret->num_mods) {
8726 for (i = 0; i < sig->ret->num_mods; ++i) {
8727 MonoError error;
8728 MonoClass *cmod_class = mono_class_get_checked (method->klass->image, sig->ret->modifiers [i].token, &error);
8729 g_assert (mono_error_ok (&error));
8730 if ((cmod_class->image == mono_defaults.corlib) && !strcmp (cmod_class->name_space, "System.Runtime.CompilerServices")) {
8731 if (!strcmp (cmod_class->name, "CallConvCdecl"))
8732 csig->call_convention = MONO_CALL_C;
8733 else if (!strcmp (cmod_class->name, "CallConvStdcall"))
8734 csig->call_convention = MONO_CALL_STDCALL;
8735 else if (!strcmp (cmod_class->name, "CallConvFastcall"))
8736 csig->call_convention = MONO_CALL_FASTCALL;
8737 else if (!strcmp (cmod_class->name, "CallConvThiscall"))
8738 csig->call_convention = MONO_CALL_THISCALL;
8739 }
8740 }
8741 }
8742 }
8743
8744 /*
8745 * generates IL code to call managed methods from unmanaged code
8746 * If target_handle==0, the wrapper info will be a WrapperInfo structure.
8747 */
8748 MonoMethod *
8749 mono_marshal_get_managed_wrapper (MonoMethod *method, MonoClass *delegate_klass, uint32_t target_handle, MonoError *error)
8750 {
8751 MonoMethodSignature *sig, *csig, *invoke_sig;
8752 MonoMethodBuilder *mb;
8753 MonoMethod *res, *invoke;
8754 MonoMarshalSpec **mspecs;
8755 MonoMethodPInvoke piinfo;
8756 GHashTable *cache;
8757 int i;
8758 EmitMarshalContext m;
8759
8760 g_assert (method != NULL);
8761 error_init (error);
8762
8763 if (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) {
8764 mono_error_set_invalid_program (error, "Failed because method (%s) marked PInvokeCallback (managed method) and extern (unmanaged) simultaneously.", mono_method_full_name (method, TRUE));
8765 return NULL;
8766 }
8767
8768 /*
8769 * FIXME: Should cache the method+delegate type pair, since the same method
8770 * could be called with different delegates, thus different marshalling
8771 * options.
8772 */
8773 cache = get_cache (&mono_method_get_wrapper_cache (method)->managed_wrapper_cache, mono_aligned_addr_hash, NULL);
8774
8775 if (!target_handle && (res = mono_marshal_find_in_cache (cache, method)))
8776 return res;
8777
8778 invoke = mono_get_delegate_invoke (delegate_klass);
8779 invoke_sig = mono_method_signature (invoke);
8780
8781 mspecs = g_new0 (MonoMarshalSpec*, mono_method_signature (invoke)->param_count + 1);
8782 mono_method_get_marshal_info (invoke, mspecs);
8783
8784 sig = mono_method_signature (method);
8785
8786 mb = mono_mb_new (method->klass, method->name, MONO_WRAPPER_NATIVE_TO_MANAGED);
8787
8788 /*the target gchandle must be the first entry after size and the wrapper itself.*/
8789 mono_mb_add_data (mb, GUINT_TO_POINTER (target_handle));
8790
8791 /* we copy the signature, so that we can modify it */
8792 if (target_handle)
8793 /* Need to free this later */
8794 csig = mono_metadata_signature_dup (invoke_sig);
8795 else
8796 csig = mono_metadata_signature_dup_full (method->klass->image, invoke_sig);
8797 csig->hasthis = 0;
8798 csig->pinvoke = 1;
8799
8800 memset (&m, 0, sizeof (m));
8801 m.mb = mb;
8802 m.sig = sig;
8803 m.piinfo = NULL;
8804 m.retobj_var = 0;
8805 m.csig = csig;
8806 m.image = method->klass->image;
8807
8808 mono_marshal_set_callconv_from_modopt (invoke, csig);
8809
8810 /* The attribute is only available in Net 2.0 */
8811 if (mono_class_try_get_unmanaged_function_pointer_attribute_class ()) {
8812 MonoCustomAttrInfo *cinfo;
8813 MonoCustomAttrEntry *attr;
8814
8815 /*
8816 * The pinvoke attributes are stored in a real custom attribute. Obtain the
8817 * contents of the attribute without constructing it, as that might not be
8818 * possible when running in cross-compiling mode.
8819 */
8820 cinfo = mono_custom_attrs_from_class_checked (delegate_klass, error);
8821 mono_error_assert_ok (error);
8822 attr = NULL;
8823 if (cinfo) {
8824 for (i = 0; i < cinfo->num_attrs; ++i) {
8825 MonoClass *ctor_class = cinfo->attrs [i].ctor->klass;
8826 if (mono_class_has_parent (ctor_class, mono_class_try_get_unmanaged_function_pointer_attribute_class ())) {
8827 attr = &cinfo->attrs [i];
8828 break;
8829 }
8830 }
8831 }
8832 if (attr) {
8833 MonoArray *typed_args, *named_args;
8834 CattrNamedArg *arginfo;
8835 MonoObject *o;
8836 gint32 call_conv;
8837 gint32 charset = 0;
8838 MonoBoolean set_last_error = 0;
8839 MonoError error;
8840
8841 mono_reflection_create_custom_attr_data_args (mono_defaults.corlib, attr->ctor, attr->data, attr->data_size, &typed_args, &named_args, &arginfo, &error);
8842 g_assert (mono_error_ok (&error));
8843 g_assert (mono_array_length (typed_args) == 1);
8844
8845 /* typed args */
8846 o = mono_array_get (typed_args, MonoObject*, 0);
8847 call_conv = *(gint32*)mono_object_unbox (o);
8848
8849 /* named args */
8850 for (i = 0; i < mono_array_length (named_args); ++i) {
8851 CattrNamedArg *narg = &arginfo [i];
8852
8853 o = mono_array_get (named_args, MonoObject*, i);
8854
8855 g_assert (narg->field);
8856 if (!strcmp (narg->field->name, "CharSet")) {
8857 charset = *(gint32*)mono_object_unbox (o);
8858 } else if (!strcmp (narg->field->name, "SetLastError")) {
8859 set_last_error = *(MonoBoolean*)mono_object_unbox (o);
8860 } else if (!strcmp (narg->field->name, "BestFitMapping")) {
8861 // best_fit_mapping = *(MonoBoolean*)mono_object_unbox (o);
8862 } else if (!strcmp (narg->field->name, "ThrowOnUnmappableChar")) {
8863 // throw_on_unmappable = *(MonoBoolean*)mono_object_unbox (o);
8864 } else {
8865 g_assert_not_reached ();
8866 }
8867 }
8868
8869 g_free (arginfo);
8870
8871 memset (&piinfo, 0, sizeof (piinfo));
8872 m.piinfo = &piinfo;
8873 piinfo.piflags = (call_conv << 8) | (charset ? (charset - 1) * 2 : 1) | set_last_error;
8874
8875 csig->call_convention = call_conv - 1;
8876 }
8877
8878 if (cinfo && !cinfo->cached)
8879 mono_custom_attrs_free (cinfo);
8880 }
8881
8882 mono_marshal_emit_managed_wrapper (mb, invoke_sig, mspecs, &m, method, target_handle);
8883
8884 if (!target_handle) {
8885 WrapperInfo *info;
8886
8887 // FIXME: Associate it with the method+delegate_klass pair
8888 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_NONE);
8889 info->d.native_to_managed.method = method;
8890 info->d.native_to_managed.klass = delegate_klass;
8891
8892 res = mono_mb_create_and_cache_full (cache, method,
8893 mb, csig, sig->param_count + 16,
8894 info, NULL);
8895 } else {
8896 #ifndef DISABLE_JIT
8897 mb->dynamic = TRUE;
8898 #endif
8899 res = mono_mb_create (mb, csig, sig->param_count + 16, NULL);
8900 }
8901 mono_mb_free (mb);
8902
8903 for (i = mono_method_signature (invoke)->param_count; i >= 0; i--)
8904 if (mspecs [i])
8905 mono_metadata_free_marshal_spec (mspecs [i]);
8906 g_free (mspecs);
8907
8908 /* mono_method_print_code (res); */
8909
8910 return res;
8911 }
8912
8913 gpointer
8914 mono_marshal_get_vtfixup_ftnptr (MonoImage *image, guint32 token, guint16 type)
8915 {
8916 MonoError error;
8917 MonoMethod *method;
8918 MonoMethodSignature *sig;
8919 MonoMethodBuilder *mb;
8920 int i, param_count;
8921
8922 g_assert (token);
8923
8924 method = mono_get_method_checked (image, token, NULL, NULL, &error);
8925 if (!method)
8926 g_error ("Could not load vtfixup token 0x%x due to %s", token, mono_error_get_message (&error));
8927 g_assert (method);
8928
8929 if (type & (VTFIXUP_TYPE_FROM_UNMANAGED | VTFIXUP_TYPE_FROM_UNMANAGED_RETAIN_APPDOMAIN)) {
8930 MonoMethodSignature *csig;
8931 MonoMarshalSpec **mspecs;
8932 EmitMarshalContext m;
8933
8934 sig = mono_method_signature (method);
8935 g_assert (!sig->hasthis);
8936
8937 mspecs = g_new0 (MonoMarshalSpec*, sig->param_count + 1);
8938 mono_method_get_marshal_info (method, mspecs);
8939
8940 mb = mono_mb_new (method->klass, method->name, MONO_WRAPPER_NATIVE_TO_MANAGED);
8941 csig = mono_metadata_signature_dup_full (image, sig);
8942 csig->hasthis = 0;
8943 csig->pinvoke = 1;
8944
8945 memset (&m, 0, sizeof (m));
8946 m.mb = mb;
8947 m.sig = sig;
8948 m.piinfo = NULL;
8949 m.retobj_var = 0;
8950 m.csig = csig;
8951 m.image = image;
8952
8953 mono_marshal_set_callconv_from_modopt (method, csig);
8954
8955 /* FIXME: Implement VTFIXUP_TYPE_FROM_UNMANAGED_RETAIN_APPDOMAIN. */
8956
8957 mono_marshal_emit_managed_wrapper (mb, sig, mspecs, &m, method, 0);
8958
8959 #ifndef DISABLE_JIT
8960 mb->dynamic = TRUE;
8961 #endif
8962 method = mono_mb_create (mb, csig, sig->param_count + 16, NULL);
8963 mono_mb_free (mb);
8964
8965 for (i = sig->param_count; i >= 0; i--)
8966 if (mspecs [i])
8967 mono_metadata_free_marshal_spec (mspecs [i]);
8968 g_free (mspecs);
8969
8970 gpointer compiled_ptr = mono_compile_method_checked (method, &error);
8971 mono_error_assert_ok (&error);
8972 return compiled_ptr;
8973 }
8974
8975 sig = mono_method_signature (method);
8976 mb = mono_mb_new (method->klass, method->name, MONO_WRAPPER_MANAGED_TO_MANAGED);
8977
8978 param_count = sig->param_count + sig->hasthis;
8979 #ifndef DISABLE_JIT
8980 for (i = 0; i < param_count; i++)
8981 mono_mb_emit_ldarg (mb, i);
8982
8983 if (type & VTFIXUP_TYPE_CALL_MOST_DERIVED)
8984 mono_mb_emit_op (mb, CEE_CALLVIRT, method);
8985 else
8986 mono_mb_emit_op (mb, CEE_CALL, method);
8987 mono_mb_emit_byte (mb, CEE_RET);
8988
8989 mb->dynamic = TRUE;
8990 #endif
8991
8992 method = mono_mb_create (mb, sig, param_count, NULL);
8993 mono_mb_free (mb);
8994
8995 gpointer compiled_ptr = mono_compile_method_checked (method, &error);
8996 mono_error_assert_ok (&error);
8997 return compiled_ptr;
8998 }
8999
9000 #ifndef DISABLE_JIT
9001
9002 /*
9003 * The code directly following this is the cache hit, value positive branch
9004 *
9005 * This function takes a new method builder with 0 locals and adds two locals
9006 * to create multiple out-branches and the fall through state of having the object
9007 * on the stack after a cache miss
9008 */
9009 static void
9010 generate_check_cache (int obj_arg_position, int class_arg_position, int cache_arg_position, // In-parameters
9011 int *null_obj, int *cache_hit_neg, int *cache_hit_pos, // Out-parameters
9012 MonoMethodBuilder *mb)
9013 {
9014 int cache_miss_pos;
9015
9016 /* allocate local 0 (pointer) obj_vtable */
9017 mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
9018 /* allocate local 1 (pointer) cached_vtable */
9019 mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
9020
9021 /*if (!obj)*/
9022 mono_mb_emit_ldarg (mb, obj_arg_position);
9023 *null_obj = mono_mb_emit_branch (mb, CEE_BRFALSE);
9024
9025 /*obj_vtable = obj->vtable;*/
9026 mono_mb_emit_ldarg (mb, obj_arg_position);
9027 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoObject, vtable));
9028 mono_mb_emit_byte (mb, CEE_LDIND_I);
9029 mono_mb_emit_stloc (mb, 0);
9030
9031 /* cached_vtable = *cache*/
9032 mono_mb_emit_ldarg (mb, cache_arg_position);
9033 mono_mb_emit_byte (mb, CEE_LDIND_I);
9034 mono_mb_emit_stloc (mb, 1);
9035
9036 mono_mb_emit_ldloc (mb, 1);
9037 mono_mb_emit_byte (mb, CEE_LDC_I4);
9038 mono_mb_emit_i4 (mb, ~0x1);
9039 mono_mb_emit_byte (mb, CEE_CONV_I);
9040 mono_mb_emit_byte (mb, CEE_AND);
9041 mono_mb_emit_ldloc (mb, 0);
9042 /*if ((cached_vtable & ~0x1)== obj_vtable)*/
9043 cache_miss_pos = mono_mb_emit_branch (mb, CEE_BNE_UN);
9044
9045 /*return (cached_vtable & 0x1) ? NULL : obj;*/
9046 mono_mb_emit_ldloc (mb, 1);
9047 mono_mb_emit_byte(mb, CEE_LDC_I4_1);
9048 mono_mb_emit_byte (mb, CEE_CONV_U);
9049 mono_mb_emit_byte (mb, CEE_AND);
9050 *cache_hit_neg = mono_mb_emit_branch (mb, CEE_BRTRUE);
9051 *cache_hit_pos = mono_mb_emit_branch (mb, CEE_BR);
9052
9053 // slow path
9054 mono_mb_patch_branch (mb, cache_miss_pos);
9055
9056 // if isinst
9057 mono_mb_emit_ldarg (mb, obj_arg_position);
9058 mono_mb_emit_ldarg (mb, class_arg_position);
9059 mono_mb_emit_ldarg (mb, cache_arg_position);
9060 mono_mb_emit_icall (mb, mono_marshal_isinst_with_cache);
9061 }
9062
9063 #endif /* DISABLE_JIT */
9064
9065 /*
9066 * This does the equivalent of mono_object_castclass_with_cache.
9067 */
9068 MonoMethod *
9069 mono_marshal_get_castclass_with_cache (void)
9070 {
9071 static MonoMethod *cached;
9072 MonoMethod *res;
9073 MonoMethodBuilder *mb;
9074 MonoMethodSignature *sig;
9075 int return_null_pos, positive_cache_hit_pos, negative_cache_hit_pos, invalid_cast_pos;
9076 WrapperInfo *info;
9077
9078 const int obj_arg_position = 0;
9079 const int class_arg_position = 1;
9080 const int cache_arg_position = 2;
9081
9082 if (cached)
9083 return cached;
9084
9085 mb = mono_mb_new (mono_defaults.object_class, "__castclass_with_cache", MONO_WRAPPER_CASTCLASS);
9086 sig = mono_metadata_signature_alloc (mono_defaults.corlib, 3);
9087 sig->params [obj_arg_position] = &mono_defaults.object_class->byval_arg;
9088 sig->params [class_arg_position] = &mono_defaults.int_class->byval_arg;
9089 sig->params [cache_arg_position] = &mono_defaults.int_class->byval_arg;
9090 sig->ret = &mono_defaults.object_class->byval_arg;
9091 sig->pinvoke = 0;
9092
9093 #ifndef DISABLE_JIT
9094 generate_check_cache (obj_arg_position, class_arg_position, cache_arg_position,
9095 &return_null_pos, &negative_cache_hit_pos, &positive_cache_hit_pos, mb);
9096 invalid_cast_pos = mono_mb_emit_branch (mb, CEE_BRFALSE);
9097
9098 /*return obj;*/
9099 mono_mb_patch_branch (mb, positive_cache_hit_pos);
9100 mono_mb_emit_ldarg (mb, obj_arg_position);
9101 mono_mb_emit_byte (mb, CEE_RET);
9102
9103 /*fails*/
9104 mono_mb_patch_branch (mb, negative_cache_hit_pos);
9105 mono_mb_patch_branch (mb, invalid_cast_pos);
9106 mono_mb_emit_exception (mb, "InvalidCastException", NULL);
9107
9108 /*return null*/
9109 mono_mb_patch_branch (mb, return_null_pos);
9110 mono_mb_emit_byte (mb, CEE_LDNULL);
9111 mono_mb_emit_byte (mb, CEE_RET);
9112 #endif /* DISABLE_JIT */
9113
9114 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_CASTCLASS_WITH_CACHE);
9115 res = mono_mb_create (mb, sig, 8, info);
9116 STORE_STORE_FENCE;
9117
9118 if (InterlockedCompareExchangePointer ((volatile gpointer *)&cached, res, NULL)) {
9119 mono_free_method (res);
9120 mono_metadata_free_method_signature (sig);
9121 }
9122 mono_mb_free (mb);
9123
9124 return cached;
9125 }
9126
9127 /* this is an icall */
9128 static MonoObject *
9129 mono_marshal_isinst_with_cache (MonoObject *obj, MonoClass *klass, uintptr_t *cache)
9130 {
9131 MonoError error;
9132 MonoObject *isinst = mono_object_isinst_checked (obj, klass, &error);
9133 if (mono_error_set_pending_exception (&error))
9134 return NULL;
9135
9136 if (mono_object_is_transparent_proxy (obj))
9137 return isinst;
9138
9139 uintptr_t cache_update = (uintptr_t)obj->vtable;
9140 if (!isinst)
9141 cache_update = cache_update | 0x1;
9142
9143 *cache = cache_update;
9144
9145 return isinst;
9146 }
9147
9148 /*
9149 * This does the equivalent of mono_object_isinst_with_cache.
9150 */
9151 MonoMethod *
9152 mono_marshal_get_isinst_with_cache (void)
9153 {
9154 static MonoMethod *cached;
9155 MonoMethod *res;
9156 MonoMethodBuilder *mb;
9157 MonoMethodSignature *sig;
9158 int return_null_pos, positive_cache_hit_pos, negative_cache_hit_pos;
9159 WrapperInfo *info;
9160
9161 const int obj_arg_position = 0;
9162 const int class_arg_position = 1;
9163 const int cache_arg_position = 2;
9164
9165 if (cached)
9166 return cached;
9167
9168 mb = mono_mb_new (mono_defaults.object_class, "__isinst_with_cache", MONO_WRAPPER_CASTCLASS);
9169 sig = mono_metadata_signature_alloc (mono_defaults.corlib, 3);
9170 // The object
9171 sig->params [obj_arg_position] = &mono_defaults.object_class->byval_arg;
9172 // The class
9173 sig->params [class_arg_position] = &mono_defaults.int_class->byval_arg;
9174 // The cache
9175 sig->params [cache_arg_position] = &mono_defaults.int_class->byval_arg;
9176 sig->ret = &mono_defaults.object_class->byval_arg;
9177 sig->pinvoke = 0;
9178
9179 #ifndef DISABLE_JIT
9180 generate_check_cache (obj_arg_position, class_arg_position, cache_arg_position,
9181 &return_null_pos, &negative_cache_hit_pos, &positive_cache_hit_pos, mb);
9182 // Return the object gotten via the slow path.
9183 mono_mb_emit_byte (mb, CEE_RET);
9184
9185 // return NULL;
9186 mono_mb_patch_branch (mb, negative_cache_hit_pos);
9187 mono_mb_patch_branch (mb, return_null_pos);
9188 mono_mb_emit_byte (mb, CEE_LDNULL);
9189 mono_mb_emit_byte (mb, CEE_RET);
9190
9191 // return obj
9192 mono_mb_patch_branch (mb, positive_cache_hit_pos);
9193 mono_mb_emit_ldarg (mb, obj_arg_position);
9194 mono_mb_emit_byte (mb, CEE_RET);
9195 #endif
9196
9197 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_ISINST_WITH_CACHE);
9198 res = mono_mb_create (mb, sig, 8, info);
9199 STORE_STORE_FENCE;
9200
9201 if (InterlockedCompareExchangePointer ((volatile gpointer *)&cached, res, NULL)) {
9202 mono_free_method (res);
9203 mono_metadata_free_method_signature (sig);
9204 }
9205 mono_mb_free (mb);
9206
9207 return cached;
9208 }
9209
9210 /**
9211 * mono_marshal_get_struct_to_ptr:
9212 * @klass:
9213 *
9214 * generates IL code for StructureToPtr (object structure, IntPtr ptr, bool fDeleteOld)
9215 */
9216 MonoMethod *
9217 mono_marshal_get_struct_to_ptr (MonoClass *klass)
9218 {
9219 MonoMethodBuilder *mb;
9220 static MonoMethod *stoptr = NULL;
9221 MonoMethod *res;
9222 WrapperInfo *info;
9223
9224 g_assert (klass != NULL);
9225
9226 mono_marshal_load_type_info (klass);
9227
9228 MonoMarshalType *marshal_info = mono_class_get_marshal_info (klass);
9229 if (marshal_info->str_to_ptr)
9230 return marshal_info->str_to_ptr;
9231
9232 if (!stoptr)
9233 stoptr = mono_class_get_method_from_name (mono_defaults.marshal_class, "StructureToPtr", 3);
9234 g_assert (stoptr);
9235
9236 mb = mono_mb_new (klass, stoptr->name, MONO_WRAPPER_UNKNOWN);
9237
9238 #ifndef DISABLE_JIT
9239 if (klass->blittable) {
9240 mono_mb_emit_byte (mb, CEE_LDARG_1);
9241 mono_mb_emit_byte (mb, CEE_LDARG_0);
9242 mono_mb_emit_ldflda (mb, sizeof (MonoObject));
9243 mono_mb_emit_icon (mb, mono_class_value_size (klass, NULL));
9244 mono_mb_emit_byte (mb, CEE_PREFIX1);
9245 mono_mb_emit_byte (mb, CEE_CPBLK);
9246 } else {
9247
9248 /* allocate local 0 (pointer) src_ptr */
9249 mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
9250 /* allocate local 1 (pointer) dst_ptr */
9251 mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
9252 /* allocate local 2 (boolean) delete_old */
9253 mono_mb_add_local (mb, &mono_defaults.boolean_class->byval_arg);
9254 mono_mb_emit_byte (mb, CEE_LDARG_2);
9255 mono_mb_emit_stloc (mb, 2);
9256
9257 /* initialize src_ptr to point to the start of object data */
9258 mono_mb_emit_byte (mb, CEE_LDARG_0);
9259 mono_mb_emit_ldflda (mb, sizeof (MonoObject));
9260 mono_mb_emit_stloc (mb, 0);
9261
9262 /* initialize dst_ptr */
9263 mono_mb_emit_byte (mb, CEE_LDARG_1);
9264 mono_mb_emit_stloc (mb, 1);
9265
9266 emit_struct_conv (mb, klass, FALSE);
9267 }
9268
9269 mono_mb_emit_byte (mb, CEE_RET);
9270 #endif
9271 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_STRUCTURE_TO_PTR);
9272 res = mono_mb_create (mb, mono_signature_no_pinvoke (stoptr), 0, info);
9273 mono_mb_free (mb);
9274
9275 mono_marshal_lock ();
9276 if (!marshal_info->str_to_ptr)
9277 marshal_info->str_to_ptr = res;
9278 else
9279 res = marshal_info->str_to_ptr;
9280 mono_marshal_unlock ();
9281 return res;
9282 }
9283
9284 /**
9285 * mono_marshal_get_ptr_to_struct:
9286 * @klass:
9287 *
9288 * generates IL code for PtrToStructure (IntPtr src, object structure)
9289 */
9290 MonoMethod *
9291 mono_marshal_get_ptr_to_struct (MonoClass *klass)
9292 {
9293 MonoMethodBuilder *mb;
9294 static MonoMethodSignature *ptostr = NULL;
9295 MonoMethod *res;
9296 WrapperInfo *info;
9297
9298 g_assert (klass != NULL);
9299
9300 mono_marshal_load_type_info (klass);
9301
9302 MonoMarshalType *marshal_info = mono_class_get_marshal_info (klass);
9303 if (marshal_info->ptr_to_str)
9304 return marshal_info->ptr_to_str;
9305
9306 if (!ptostr) {
9307 MonoMethodSignature *sig;
9308
9309 /* Create the signature corresponding to
9310 static void PtrToStructure (IntPtr ptr, object structure);
9311 defined in class/corlib/System.Runtime.InteropServices/Marshal.cs */
9312 sig = mono_create_icall_signature ("void ptr object");
9313 sig = mono_metadata_signature_dup_full (mono_defaults.corlib, sig);
9314 sig->pinvoke = 0;
9315 mono_memory_barrier ();
9316 ptostr = sig;
9317 }
9318
9319 mb = mono_mb_new (klass, "PtrToStructure", MONO_WRAPPER_UNKNOWN);
9320
9321 #ifndef DISABLE_JIT
9322 if (klass->blittable) {
9323 mono_mb_emit_byte (mb, CEE_LDARG_1);
9324 mono_mb_emit_ldflda (mb, sizeof (MonoObject));
9325 mono_mb_emit_byte (mb, CEE_LDARG_0);
9326 mono_mb_emit_icon (mb, mono_class_value_size (klass, NULL));
9327 mono_mb_emit_byte (mb, CEE_PREFIX1);
9328 mono_mb_emit_byte (mb, CEE_CPBLK);
9329 } else {
9330
9331 /* allocate local 0 (pointer) src_ptr */
9332 mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
9333 /* allocate local 1 (pointer) dst_ptr */
9334 mono_mb_add_local (mb, &klass->this_arg);
9335
9336 /* initialize src_ptr to point to the start of object data */
9337 mono_mb_emit_byte (mb, CEE_LDARG_0);
9338 mono_mb_emit_stloc (mb, 0);
9339
9340 /* initialize dst_ptr */
9341 mono_mb_emit_byte (mb, CEE_LDARG_1);
9342 mono_mb_emit_op (mb, CEE_UNBOX, klass);
9343 mono_mb_emit_stloc (mb, 1);
9344
9345 emit_struct_conv (mb, klass, TRUE);
9346 }
9347
9348 mono_mb_emit_byte (mb, CEE_RET);
9349 #endif
9350 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_PTR_TO_STRUCTURE);
9351 res = mono_mb_create (mb, ptostr, 0, info);
9352 mono_mb_free (mb);
9353
9354 mono_marshal_lock ();
9355 if (!marshal_info->ptr_to_str)
9356 marshal_info->ptr_to_str = res;
9357 else
9358 res = marshal_info->ptr_to_str;
9359 mono_marshal_unlock ();
9360 return res;
9361 }
9362
9363 /*
9364 * Return a dummy wrapper for METHOD which is called by synchronized wrappers.
9365 * This is used to avoid infinite recursion since it is hard to determine where to
9366 * replace a method with its synchronized wrapper, and where not.
9367 * The runtime should execute METHOD instead of the wrapper.
9368 */
9369 MonoMethod *
9370 mono_marshal_get_synchronized_inner_wrapper (MonoMethod *method)
9371 {
9372 MonoMethodBuilder *mb;
9373 WrapperInfo *info;
9374 MonoMethodSignature *sig;
9375 MonoMethod *res;
9376 MonoGenericContext *ctx = NULL;
9377 MonoGenericContainer *container = NULL;
9378
9379 if (method->is_inflated && !mono_method_get_context (method)->method_inst) {
9380 ctx = &((MonoMethodInflated*)method)->context;
9381 method = ((MonoMethodInflated*)method)->declaring;
9382 container = mono_method_get_generic_container (method);
9383 if (!container)
9384 container = mono_class_try_get_generic_container (method->klass); //FIXME is this a case of a try?
9385 g_assert (container);
9386 }
9387
9388 mb = mono_mb_new (method->klass, method->name, MONO_WRAPPER_UNKNOWN);
9389 #ifndef DISABLE_JIT
9390 mono_mb_emit_exception_full (mb, "System", "ExecutionEngineException", "Shouldn't be called.");
9391 mono_mb_emit_byte (mb, CEE_RET);
9392 #endif
9393 sig = mono_metadata_signature_dup_full (method->klass->image, mono_method_signature (method));
9394
9395 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_SYNCHRONIZED_INNER);
9396 info->d.synchronized_inner.method = method;
9397 res = mono_mb_create (mb, sig, 0, info);
9398 mono_mb_free (mb);
9399 if (ctx) {
9400 MonoError error;
9401 res = mono_class_inflate_generic_method_checked (res, ctx, &error);
9402 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
9403 }
9404 return res;
9405 }
9406
9407 /*
9408 * generates IL code for the synchronized wrapper: the generated method
9409 * calls METHOD while locking 'this' or the parent type.
9410 */
9411 MonoMethod *
9412 mono_marshal_get_synchronized_wrapper (MonoMethod *method)
9413 {
9414 static MonoMethod *enter_method, *exit_method, *gettypefromhandle_method;
9415 MonoMethodSignature *sig;
9416 MonoExceptionClause *clause;
9417 MonoMethodBuilder *mb;
9418 MonoMethod *res;
9419 GHashTable *cache;
9420 WrapperInfo *info;
9421 int i, pos, pos2, this_local, taken_local, ret_local = 0;
9422 MonoGenericContext *ctx = NULL;
9423 MonoMethod *orig_method = NULL;
9424 MonoGenericContainer *container = NULL;
9425
9426 g_assert (method);
9427
9428 if (method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED)
9429 return method;
9430
9431 /* FIXME: Support generic methods too */
9432 if (method->is_inflated && !mono_method_get_context (method)->method_inst) {
9433 orig_method = method;
9434 ctx = &((MonoMethodInflated*)method)->context;
9435 method = ((MonoMethodInflated*)method)->declaring;
9436 container = mono_method_get_generic_container (method);
9437 if (!container)
9438 container = mono_class_try_get_generic_container (method->klass); //FIXME is this a case of a try?
9439 g_assert (container);
9440 }
9441
9442 /*
9443 * Check cache
9444 */
9445 if (ctx) {
9446 cache = get_cache (&((MonoMethodInflated*)orig_method)->owner->wrapper_caches.synchronized_cache, mono_aligned_addr_hash, NULL);
9447 res = check_generic_wrapper_cache (cache, orig_method, orig_method, method);
9448 if (res)
9449 return res;
9450 } else {
9451 cache = get_cache (&method->klass->image->wrapper_caches.synchronized_cache, mono_aligned_addr_hash, NULL);
9452 if ((res = mono_marshal_find_in_cache (cache, method)))
9453 return res;
9454 }
9455
9456 sig = mono_metadata_signature_dup_full (method->klass->image, mono_method_signature (method));
9457 sig->pinvoke = 0;
9458
9459 mb = mono_mb_new (method->klass, method->name, MONO_WRAPPER_SYNCHRONIZED);
9460
9461 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_NONE);
9462 info->d.synchronized.method = method;
9463
9464 #ifndef DISABLE_JIT
9465 mb->skip_visibility = 1;
9466 /* result */
9467 if (!MONO_TYPE_IS_VOID (sig->ret))
9468 ret_local = mono_mb_add_local (mb, sig->ret);
9469 #endif
9470
9471 if (method->klass->valuetype && !(method->flags & MONO_METHOD_ATTR_STATIC)) {
9472 /* FIXME Is this really the best way to signal an error here? Isn't this called much later after class setup? -AK */
9473 mono_class_set_type_load_failure (method->klass, "");
9474 #ifndef DISABLE_JIT
9475 /* This will throw the type load exception when the wrapper is compiled */
9476 mono_mb_emit_byte (mb, CEE_LDNULL);
9477 mono_mb_emit_op (mb, CEE_ISINST, method->klass);
9478 mono_mb_emit_byte (mb, CEE_POP);
9479
9480 if (!MONO_TYPE_IS_VOID (sig->ret))
9481 mono_mb_emit_ldloc (mb, ret_local);
9482 mono_mb_emit_byte (mb, CEE_RET);
9483 #endif
9484
9485 res = mono_mb_create_and_cache_full (cache, method,
9486 mb, sig, sig->param_count + 16, info, NULL);
9487 mono_mb_free (mb);
9488
9489 return res;
9490 }
9491
9492 #ifndef DISABLE_JIT
9493 /* this */
9494 this_local = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
9495 taken_local = mono_mb_add_local (mb, &mono_defaults.boolean_class->byval_arg);
9496
9497 clause = (MonoExceptionClause *)mono_image_alloc0 (method->klass->image, sizeof (MonoExceptionClause));
9498 clause->flags = MONO_EXCEPTION_CLAUSE_FINALLY;
9499 #endif
9500
9501 mono_marshal_lock ();
9502
9503 if (!enter_method) {
9504 MonoMethodDesc *desc;
9505
9506 desc = mono_method_desc_new ("Monitor:Enter(object,bool&)", FALSE);
9507 enter_method = mono_method_desc_search_in_class (desc, mono_defaults.monitor_class);
9508 g_assert (enter_method);
9509 mono_method_desc_free (desc);
9510
9511 desc = mono_method_desc_new ("Monitor:Exit", FALSE);
9512 exit_method = mono_method_desc_search_in_class (desc, mono_defaults.monitor_class);
9513 g_assert (exit_method);
9514 mono_method_desc_free (desc);
9515
9516 desc = mono_method_desc_new ("Type:GetTypeFromHandle", FALSE);
9517 gettypefromhandle_method = mono_method_desc_search_in_class (desc, mono_defaults.systemtype_class);
9518 g_assert (gettypefromhandle_method);
9519 mono_method_desc_free (desc);
9520 }
9521
9522 mono_marshal_unlock ();
9523
9524 #ifndef DISABLE_JIT
9525 /* Push this or the type object */
9526 if (method->flags & METHOD_ATTRIBUTE_STATIC) {
9527 /* We have special handling for this in the JIT */
9528 int index = mono_mb_add_data (mb, method->klass);
9529 mono_mb_add_data (mb, mono_defaults.typehandle_class);
9530 mono_mb_emit_byte (mb, CEE_LDTOKEN);
9531 mono_mb_emit_i4 (mb, index);
9532
9533 mono_mb_emit_managed_call (mb, gettypefromhandle_method, NULL);
9534 }
9535 else
9536 mono_mb_emit_ldarg (mb, 0);
9537 mono_mb_emit_stloc (mb, this_local);
9538
9539 /* Call Monitor::Enter() */
9540 mono_mb_emit_ldloc (mb, this_local);
9541 mono_mb_emit_ldloc_addr (mb, taken_local);
9542 mono_mb_emit_managed_call (mb, enter_method, NULL);
9543
9544 clause->try_offset = mono_mb_get_label (mb);
9545
9546 /* Call the method */
9547 if (sig->hasthis)
9548 mono_mb_emit_ldarg (mb, 0);
9549 for (i = 0; i < sig->param_count; i++)
9550 mono_mb_emit_ldarg (mb, i + (sig->hasthis == TRUE));
9551
9552 if (ctx) {
9553 MonoError error;
9554 mono_mb_emit_managed_call (mb, mono_class_inflate_generic_method_checked (method, &container->context, &error), NULL);
9555 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
9556 } else {
9557 mono_mb_emit_managed_call (mb, method, NULL);
9558 }
9559
9560 if (!MONO_TYPE_IS_VOID (sig->ret))
9561 mono_mb_emit_stloc (mb, ret_local);
9562
9563 pos = mono_mb_emit_branch (mb, CEE_LEAVE);
9564
9565 clause->try_len = mono_mb_get_pos (mb) - clause->try_offset;
9566 clause->handler_offset = mono_mb_get_label (mb);
9567
9568 /* Call Monitor::Exit() if needed */
9569 mono_mb_emit_ldloc (mb, taken_local);
9570 pos2 = mono_mb_emit_branch (mb, CEE_BRFALSE);
9571 mono_mb_emit_ldloc (mb, this_local);
9572 mono_mb_emit_managed_call (mb, exit_method, NULL);
9573 mono_mb_patch_branch (mb, pos2);
9574 mono_mb_emit_byte (mb, CEE_ENDFINALLY);
9575
9576 clause->handler_len = mono_mb_get_pos (mb) - clause->handler_offset;
9577
9578 mono_mb_patch_branch (mb, pos);
9579 if (!MONO_TYPE_IS_VOID (sig->ret))
9580 mono_mb_emit_ldloc (mb, ret_local);
9581 mono_mb_emit_byte (mb, CEE_RET);
9582
9583 mono_mb_set_clauses (mb, 1, clause);
9584 #endif
9585
9586 if (ctx) {
9587 MonoMethod *def;
9588 def = mono_mb_create_and_cache_full (cache, method, mb, sig, sig->param_count + 16, info, NULL);
9589 res = cache_generic_wrapper (cache, orig_method, def, ctx, orig_method);
9590 } else {
9591 res = mono_mb_create_and_cache_full (cache, method,
9592 mb, sig, sig->param_count + 16, info, NULL);
9593 }
9594 mono_mb_free (mb);
9595
9596 return res;
9597 }
9598
9599
9600 /*
9601 * the returned method calls 'method' unboxing the this argument
9602 */
9603 MonoMethod *
9604 mono_marshal_get_unbox_wrapper (MonoMethod *method)
9605 {
9606 MonoMethodSignature *sig = mono_method_signature (method);
9607 int i;
9608 MonoMethodBuilder *mb;
9609 MonoMethod *res;
9610 GHashTable *cache;
9611 WrapperInfo *info;
9612
9613 cache = get_cache (&mono_method_get_wrapper_cache (method)->unbox_wrapper_cache, mono_aligned_addr_hash, NULL);
9614
9615 if ((res = mono_marshal_find_in_cache (cache, method)))
9616 return res;
9617
9618 mb = mono_mb_new (method->klass, method->name, MONO_WRAPPER_UNBOX);
9619
9620 g_assert (sig->hasthis);
9621
9622 #ifndef DISABLE_JIT
9623 mono_mb_emit_ldarg (mb, 0);
9624 mono_mb_emit_icon (mb, sizeof (MonoObject));
9625 mono_mb_emit_byte (mb, CEE_ADD);
9626 for (i = 0; i < sig->param_count; ++i)
9627 mono_mb_emit_ldarg (mb, i + 1);
9628 mono_mb_emit_managed_call (mb, method, NULL);
9629 mono_mb_emit_byte (mb, CEE_RET);
9630 #endif
9631
9632 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_NONE);
9633 info->d.unbox.method = method;
9634
9635 res = mono_mb_create_and_cache_full (cache, method,
9636 mb, sig, sig->param_count + 16, info, NULL);
9637 mono_mb_free (mb);
9638
9639 /* mono_method_print_code (res); */
9640
9641 return res;
9642 }
9643
9644 enum {
9645 STELEMREF_OBJECT, /*no check at all*/
9646 STELEMREF_SEALED_CLASS, /*check vtable->klass->element_type */
9647 STELEMREF_CLASS, /*only the klass->parents check*/
9648 STELEMREF_INTERFACE, /*interfaces without variant generic arguments. */
9649 STELEMREF_COMPLEX, /*arrays, MBR or types with variant generic args - go straight to icalls*/
9650 STELEMREF_KIND_COUNT
9651 };
9652
9653 static const char *strelemref_wrapper_name[] = {
9654 "object", "sealed_class", "class", "interface", "complex"
9655 };
9656
9657 static gboolean
9658 is_monomorphic_array (MonoClass *klass)
9659 {
9660 MonoClass *element_class;
9661 if (klass->rank != 1)
9662 return FALSE;
9663
9664 element_class = klass->element_class;
9665 return mono_class_is_sealed (element_class) || element_class->valuetype;
9666 }
9667
9668 static int
9669 get_virtual_stelemref_kind (MonoClass *element_class)
9670 {
9671 if (element_class == mono_defaults.object_class)
9672 return STELEMREF_OBJECT;
9673 if (is_monomorphic_array (element_class))
9674 return STELEMREF_SEALED_CLASS;
9675 /* Compressed interface bitmaps require code that is quite complex, so don't optimize for it. */
9676 if (MONO_CLASS_IS_INTERFACE (element_class) && !mono_class_has_variant_generic_params (element_class))
9677 #ifdef COMPRESSED_INTERFACE_BITMAP
9678 return STELEMREF_COMPLEX;
9679 #else
9680 return STELEMREF_INTERFACE;
9681 #endif
9682 /*Arrays are sealed but are covariant on their element type, We can't use any of the fast paths.*/
9683 if (mono_class_is_marshalbyref (element_class) || element_class->rank || mono_class_has_variant_generic_params (element_class))
9684 return STELEMREF_COMPLEX;
9685 if (mono_class_is_sealed (element_class))
9686 return STELEMREF_SEALED_CLASS;
9687 return STELEMREF_CLASS;
9688 }
9689
9690 #ifndef DISABLE_JIT
9691
9692 static void
9693 load_array_element_address (MonoMethodBuilder *mb)
9694 {
9695 mono_mb_emit_ldarg (mb, 0);
9696 mono_mb_emit_ldarg (mb, 1);
9697 mono_mb_emit_op (mb, CEE_LDELEMA, mono_defaults.object_class);
9698 }
9699
9700 static void
9701 load_array_class (MonoMethodBuilder *mb, int aklass)
9702 {
9703 mono_mb_emit_ldarg (mb, 0);
9704 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoObject, vtable));
9705 mono_mb_emit_byte (mb, CEE_LDIND_I);
9706 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoVTable, klass));
9707 mono_mb_emit_byte (mb, CEE_LDIND_I);
9708 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoClass, element_class));
9709 mono_mb_emit_byte (mb, CEE_LDIND_I);
9710 mono_mb_emit_stloc (mb, aklass);
9711 }
9712
9713 static void
9714 load_value_class (MonoMethodBuilder *mb, int vklass)
9715 {
9716 mono_mb_emit_ldarg (mb, 2);
9717 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoObject, vtable));
9718 mono_mb_emit_byte (mb, CEE_LDIND_I);
9719 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoVTable, klass));
9720 mono_mb_emit_byte (mb, CEE_LDIND_I);
9721 mono_mb_emit_stloc (mb, vklass);
9722 }
9723 #endif
9724
9725 #if 0
9726 static void
9727 record_slot_vstore (MonoObject *array, size_t index, MonoObject *value)
9728 {
9729 char *name = mono_type_get_full_name (array->vtable->klass->element_class);
9730 printf ("slow vstore of %s\n", name);
9731 g_free (name);
9732 }
9733 #endif
9734
9735 /*
9736 * TODO:
9737 * - Separate simple interfaces from variant interfaces or mbr types. This way we can avoid the icall for them.
9738 * - Emit a (new) mono bytecode that produces OP_COND_EXC_NE_UN to raise ArrayTypeMismatch
9739 * - Maybe mve some MonoClass field into the vtable to reduce the number of loads
9740 * - Add a case for arrays of arrays.
9741 */
9742 static MonoMethod*
9743 get_virtual_stelemref_wrapper (int kind)
9744 {
9745 static MonoMethod *cached_methods [STELEMREF_KIND_COUNT] = { NULL }; /*object iface sealed regular*/
9746 static MonoMethodSignature *signature;
9747 MonoMethodBuilder *mb;
9748 MonoMethod *res;
9749 char *name;
9750 const char *param_names [16];
9751 guint32 b1, b2, b3, b4;
9752 int aklass, vklass, vtable, uiid;
9753 int array_slot_addr;
9754 WrapperInfo *info;
9755
9756 if (cached_methods [kind])
9757 return cached_methods [kind];
9758
9759 name = g_strdup_printf ("virt_stelemref_%s", strelemref_wrapper_name [kind]);
9760 mb = mono_mb_new (mono_defaults.object_class, name, MONO_WRAPPER_STELEMREF);
9761 g_free (name);
9762
9763 if (!signature) {
9764 MonoMethodSignature *sig = mono_metadata_signature_alloc (mono_defaults.corlib, 2);
9765
9766 /* void this::stelemref (size_t idx, void* value) */
9767 sig->ret = &mono_defaults.void_class->byval_arg;
9768 sig->hasthis = TRUE;
9769 sig->params [0] = &mono_defaults.int_class->byval_arg; /* this is a natural sized int */
9770 sig->params [1] = &mono_defaults.object_class->byval_arg;
9771 signature = sig;
9772 }
9773
9774 #ifndef DISABLE_JIT
9775 param_names [0] = "index";
9776 param_names [1] = "value";
9777 mono_mb_set_param_names (mb, param_names);
9778
9779 /*For now simply call plain old stelemref*/
9780 switch (kind) {
9781 case STELEMREF_OBJECT:
9782 /* ldelema (implicit bound check) */
9783 load_array_element_address (mb);
9784 /* do_store */
9785 mono_mb_emit_ldarg (mb, 2);
9786 mono_mb_emit_byte (mb, CEE_STIND_REF);
9787 mono_mb_emit_byte (mb, CEE_RET);
9788 break;
9789
9790 case STELEMREF_COMPLEX: {
9791 int b_fast;
9792 /*
9793 <ldelema (bound check)>
9794 if (!value)
9795 goto store;
9796 if (!mono_object_isinst (value, aklass))
9797 goto do_exception;
9798
9799 do_store:
9800 *array_slot_addr = value;
9801
9802 do_exception:
9803 throw new ArrayTypeMismatchException ();
9804 */
9805
9806 aklass = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
9807 vklass = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
9808 array_slot_addr = mono_mb_add_local (mb, &mono_defaults.object_class->this_arg);
9809
9810 #if 0
9811 {
9812 /*Use this to debug/record stores that are going thru the slow path*/
9813 MonoMethodSignature *csig;
9814 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 3);
9815 csig->ret = &mono_defaults.void_class->byval_arg;
9816 csig->params [0] = &mono_defaults.object_class->byval_arg;
9817 csig->params [1] = &mono_defaults.int_class->byval_arg; /* this is a natural sized int */
9818 csig->params [2] = &mono_defaults.object_class->byval_arg;
9819 mono_mb_emit_ldarg (mb, 0);
9820 mono_mb_emit_ldarg (mb, 1);
9821 mono_mb_emit_ldarg (mb, 2);
9822 mono_mb_emit_native_call (mb, csig, record_slot_vstore);
9823 }
9824 #endif
9825
9826 /* ldelema (implicit bound check) */
9827 load_array_element_address (mb);
9828 mono_mb_emit_stloc (mb, array_slot_addr);
9829
9830 /* if (!value) goto do_store */
9831 mono_mb_emit_ldarg (mb, 2);
9832 b1 = mono_mb_emit_branch (mb, CEE_BRFALSE);
9833
9834 /* aklass = array->vtable->klass->element_class */
9835 load_array_class (mb, aklass);
9836 /* vklass = value->vtable->klass */
9837 load_value_class (mb, vklass);
9838
9839 /* fastpath */
9840 mono_mb_emit_ldloc (mb, vklass);
9841 mono_mb_emit_ldloc (mb, aklass);
9842 b_fast = mono_mb_emit_branch (mb, CEE_BEQ);
9843
9844 /*if (mono_object_isinst (value, aklass)) */
9845 mono_mb_emit_ldarg (mb, 2);
9846 mono_mb_emit_ldloc (mb, aklass);
9847 mono_mb_emit_icall (mb, mono_object_isinst_icall);
9848 b2 = mono_mb_emit_branch (mb, CEE_BRFALSE);
9849
9850 /* do_store: */
9851 mono_mb_patch_branch (mb, b1);
9852 mono_mb_patch_branch (mb, b_fast);
9853 mono_mb_emit_ldloc (mb, array_slot_addr);
9854 mono_mb_emit_ldarg (mb, 2);
9855 mono_mb_emit_byte (mb, CEE_STIND_REF);
9856 mono_mb_emit_byte (mb, CEE_RET);
9857
9858 /* do_exception: */
9859 mono_mb_patch_branch (mb, b2);
9860
9861 mono_mb_emit_exception (mb, "ArrayTypeMismatchException", NULL);
9862 break;
9863 }
9864 case STELEMREF_SEALED_CLASS:
9865 /*
9866 <ldelema (bound check)>
9867 if (!value)
9868 goto store;
9869
9870 aklass = array->vtable->klass->element_class;
9871 vklass = value->vtable->klass;
9872
9873 if (vklass != aklass)
9874 goto do_exception;
9875
9876 do_store:
9877 *array_slot_addr = value;
9878
9879 do_exception:
9880 throw new ArrayTypeMismatchException ();
9881 */
9882 aklass = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
9883 vklass = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
9884 array_slot_addr = mono_mb_add_local (mb, &mono_defaults.object_class->this_arg);
9885
9886 /* ldelema (implicit bound check) */
9887 load_array_element_address (mb);
9888 mono_mb_emit_stloc (mb, array_slot_addr);
9889
9890 /* if (!value) goto do_store */
9891 mono_mb_emit_ldarg (mb, 2);
9892 b1 = mono_mb_emit_branch (mb, CEE_BRFALSE);
9893
9894 /* aklass = array->vtable->klass->element_class */
9895 load_array_class (mb, aklass);
9896
9897 /* vklass = value->vtable->klass */
9898 load_value_class (mb, vklass);
9899
9900 /*if (vklass != aklass) goto do_exception; */
9901 mono_mb_emit_ldloc (mb, aklass);
9902 mono_mb_emit_ldloc (mb, vklass);
9903 b2 = mono_mb_emit_branch (mb, CEE_BNE_UN);
9904
9905 /* do_store: */
9906 mono_mb_patch_branch (mb, b1);
9907 mono_mb_emit_ldloc (mb, array_slot_addr);
9908 mono_mb_emit_ldarg (mb, 2);
9909 mono_mb_emit_byte (mb, CEE_STIND_REF);
9910 mono_mb_emit_byte (mb, CEE_RET);
9911
9912 /* do_exception: */
9913 mono_mb_patch_branch (mb, b2);
9914 mono_mb_emit_exception (mb, "ArrayTypeMismatchException", NULL);
9915 break;
9916
9917 case STELEMREF_CLASS: {
9918 int b_fast;
9919
9920 /*
9921 the method:
9922 <ldelema (bound check)>
9923 if (!value)
9924 goto do_store;
9925
9926 aklass = array->vtable->klass->element_class;
9927 vklass = value->vtable->klass;
9928
9929 if (vklass->idepth < aklass->idepth)
9930 goto do_exception;
9931
9932 if (vklass->supertypes [aklass->idepth - 1] != aklass)
9933 goto do_exception;
9934
9935 do_store:
9936 *array_slot_addr = value;
9937 return;
9938
9939 long:
9940 throw new ArrayTypeMismatchException ();
9941 */
9942 aklass = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
9943 vklass = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
9944 array_slot_addr = mono_mb_add_local (mb, &mono_defaults.object_class->this_arg);
9945
9946 /* ldelema (implicit bound check) */
9947 load_array_element_address (mb);
9948 mono_mb_emit_stloc (mb, array_slot_addr);
9949
9950 /* if (!value) goto do_store */
9951 mono_mb_emit_ldarg (mb, 2);
9952 b1 = mono_mb_emit_branch (mb, CEE_BRFALSE);
9953
9954 /* aklass = array->vtable->klass->element_class */
9955 load_array_class (mb, aklass);
9956
9957 /* vklass = value->vtable->klass */
9958 load_value_class (mb, vklass);
9959
9960 /* fastpath */
9961 mono_mb_emit_ldloc (mb, vklass);
9962 mono_mb_emit_ldloc (mb, aklass);
9963 b_fast = mono_mb_emit_branch (mb, CEE_BEQ);
9964
9965 /*if (mono_object_isinst (value, aklass)) */
9966 mono_mb_emit_ldarg (mb, 2);
9967 mono_mb_emit_ldloc (mb, aklass);
9968 mono_mb_emit_icall (mb, mono_object_isinst_icall);
9969 b2 = mono_mb_emit_branch (mb, CEE_BRFALSE);
9970
9971 /* if (vklass->idepth < aklass->idepth) goto failue */
9972 mono_mb_emit_ldloc (mb, vklass);
9973 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoClass, idepth));
9974 mono_mb_emit_byte (mb, CEE_LDIND_U2);
9975
9976 mono_mb_emit_ldloc (mb, aklass);
9977 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoClass, idepth));
9978 mono_mb_emit_byte (mb, CEE_LDIND_U2);
9979
9980 b3 = mono_mb_emit_branch (mb, CEE_BLT_UN);
9981
9982 /* if (vklass->supertypes [aklass->idepth - 1] != aklass) goto failure */
9983 mono_mb_emit_ldloc (mb, vklass);
9984 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoClass, supertypes));
9985 mono_mb_emit_byte (mb, CEE_LDIND_I);
9986
9987 mono_mb_emit_ldloc (mb, aklass);
9988 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoClass, idepth));
9989 mono_mb_emit_byte (mb, CEE_LDIND_U2);
9990 mono_mb_emit_icon (mb, 1);
9991 mono_mb_emit_byte (mb, CEE_SUB);
9992 mono_mb_emit_icon (mb, sizeof (void*));
9993 mono_mb_emit_byte (mb, CEE_MUL);
9994 mono_mb_emit_byte (mb, CEE_ADD);
9995 mono_mb_emit_byte (mb, CEE_LDIND_I);
9996
9997 mono_mb_emit_ldloc (mb, aklass);
9998 b4 = mono_mb_emit_branch (mb, CEE_BNE_UN);
9999
10000 /* do_store: */
10001 mono_mb_patch_branch (mb, b1);
10002 mono_mb_patch_branch (mb, b_fast);
10003 mono_mb_emit_ldloc (mb, array_slot_addr);
10004 mono_mb_emit_ldarg (mb, 2);
10005 mono_mb_emit_byte (mb, CEE_STIND_REF);
10006 mono_mb_emit_byte (mb, CEE_RET);
10007
10008 /* do_exception: */
10009 mono_mb_patch_branch (mb, b2);
10010 mono_mb_patch_branch (mb, b3);
10011 mono_mb_patch_branch (mb, b4);
10012
10013 mono_mb_emit_exception (mb, "ArrayTypeMismatchException", NULL);
10014 break;
10015 }
10016 case STELEMREF_INTERFACE:
10017 /*Mono *klass;
10018 MonoVTable *vt;
10019 unsigned uiid;
10020 if (value == NULL)
10021 goto store;
10022
10023 klass = array->obj.vtable->klass->element_class;
10024 vt = value->vtable;
10025 uiid = klass->interface_id;
10026 if (uiid > vt->max_interface_id)
10027 goto exception;
10028 if (!(vt->interface_bitmap [(uiid) >> 3] & (1 << ((uiid)&7))))
10029 goto exception;
10030 store:
10031 mono_array_setref (array, index, value);
10032 return;
10033 exception:
10034 mono_raise_exception (mono_get_exception_array_type_mismatch ());*/
10035
10036 array_slot_addr = mono_mb_add_local (mb, &mono_defaults.object_class->this_arg);
10037 aklass = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
10038 vtable = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
10039 uiid = mono_mb_add_local (mb, &mono_defaults.int32_class->byval_arg);
10040
10041 /* ldelema (implicit bound check) */
10042 load_array_element_address (mb);
10043 mono_mb_emit_stloc (mb, array_slot_addr);
10044
10045 /* if (!value) goto do_store */
10046 mono_mb_emit_ldarg (mb, 2);
10047 b1 = mono_mb_emit_branch (mb, CEE_BRFALSE);
10048
10049 /* klass = array->vtable->klass->element_class */
10050 load_array_class (mb, aklass);
10051
10052 /* vt = value->vtable */
10053 mono_mb_emit_ldarg (mb, 2);
10054 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoObject, vtable));
10055 mono_mb_emit_byte (mb, CEE_LDIND_I);
10056 mono_mb_emit_stloc (mb, vtable);
10057
10058 /* uiid = klass->interface_id; */
10059 mono_mb_emit_ldloc (mb, aklass);
10060 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoClass, interface_id));
10061 mono_mb_emit_byte (mb, CEE_LDIND_U4);
10062 mono_mb_emit_stloc (mb, uiid);
10063
10064 /*if (uiid > vt->max_interface_id)*/
10065 mono_mb_emit_ldloc (mb, uiid);
10066 mono_mb_emit_ldloc (mb, vtable);
10067 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoVTable, max_interface_id));
10068 mono_mb_emit_byte (mb, CEE_LDIND_U4);
10069 b2 = mono_mb_emit_branch (mb, CEE_BGT_UN);
10070
10071 /* if (!(vt->interface_bitmap [(uiid) >> 3] & (1 << ((uiid)&7)))) */
10072
10073 /*vt->interface_bitmap*/
10074 mono_mb_emit_ldloc (mb, vtable);
10075 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoVTable, interface_bitmap));
10076 mono_mb_emit_byte (mb, CEE_LDIND_I);
10077
10078 /*uiid >> 3*/
10079 mono_mb_emit_ldloc (mb, uiid);
10080 mono_mb_emit_icon (mb, 3);
10081 mono_mb_emit_byte (mb, CEE_SHR_UN);
10082
10083 /*vt->interface_bitmap [(uiid) >> 3]*/
10084 mono_mb_emit_byte (mb, CEE_ADD); /*interface_bitmap is a guint8 array*/
10085 mono_mb_emit_byte (mb, CEE_LDIND_U1);
10086
10087 /*(1 << ((uiid)&7)))*/
10088 mono_mb_emit_icon (mb, 1);
10089 mono_mb_emit_ldloc (mb, uiid);
10090 mono_mb_emit_icon (mb, 7);
10091 mono_mb_emit_byte (mb, CEE_AND);
10092 mono_mb_emit_byte (mb, CEE_SHL);
10093
10094 /*bitwise and the whole thing*/
10095 mono_mb_emit_byte (mb, CEE_AND);
10096 b3 = mono_mb_emit_branch (mb, CEE_BRFALSE);
10097
10098 /* do_store: */
10099 mono_mb_patch_branch (mb, b1);
10100 mono_mb_emit_ldloc (mb, array_slot_addr);
10101 mono_mb_emit_ldarg (mb, 2);
10102 mono_mb_emit_byte (mb, CEE_STIND_REF);
10103 mono_mb_emit_byte (mb, CEE_RET);
10104
10105 /* do_exception: */
10106 mono_mb_patch_branch (mb, b2);
10107 mono_mb_patch_branch (mb, b3);
10108 mono_mb_emit_exception (mb, "ArrayTypeMismatchException", NULL);
10109 break;
10110
10111 default:
10112 mono_mb_emit_ldarg (mb, 0);
10113 mono_mb_emit_ldarg (mb, 1);
10114 mono_mb_emit_ldarg (mb, 2);
10115 mono_mb_emit_managed_call (mb, mono_marshal_get_stelemref (), NULL);
10116 mono_mb_emit_byte (mb, CEE_RET);
10117 g_assert (0);
10118 }
10119 #endif /* DISABLE_JIT */
10120 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_VIRTUAL_STELEMREF);
10121 info->d.virtual_stelemref.kind = kind;
10122 res = mono_mb_create (mb, signature, 4, info);
10123 res->flags |= METHOD_ATTRIBUTE_VIRTUAL;
10124
10125 mono_marshal_lock ();
10126 if (!cached_methods [kind]) {
10127 cached_methods [kind] = res;
10128 mono_marshal_unlock ();
10129 } else {
10130 mono_marshal_unlock ();
10131 mono_free_method (res);
10132 }
10133
10134 mono_mb_free (mb);
10135 return cached_methods [kind];
10136 }
10137
10138 MonoMethod*
10139 mono_marshal_get_virtual_stelemref (MonoClass *array_class)
10140 {
10141 int kind;
10142
10143 g_assert (array_class->rank == 1);
10144 kind = get_virtual_stelemref_kind (array_class->element_class);
10145
10146 return get_virtual_stelemref_wrapper (kind);
10147 }
10148
10149 MonoMethod**
10150 mono_marshal_get_virtual_stelemref_wrappers (int *nwrappers)
10151 {
10152 MonoMethod **res;
10153 int i;
10154
10155 *nwrappers = STELEMREF_KIND_COUNT;
10156 res = (MonoMethod **)g_malloc0 (STELEMREF_KIND_COUNT * sizeof (MonoMethod*));
10157 for (i = 0; i < STELEMREF_KIND_COUNT; ++i)
10158 res [i] = get_virtual_stelemref_wrapper (i);
10159 return res;
10160 }
10161
10162 MonoMethod*
10163 mono_marshal_get_stelemref (void)
10164 {
10165 static MonoMethod* ret = NULL;
10166 MonoMethodSignature *sig;
10167 MonoMethodBuilder *mb;
10168 WrapperInfo *info;
10169
10170 guint32 b1, b2, b3, b4;
10171 guint32 copy_pos;
10172 int aklass, vklass;
10173 int array_slot_addr;
10174
10175 if (ret)
10176 return ret;
10177
10178 mb = mono_mb_new (mono_defaults.object_class, "stelemref", MONO_WRAPPER_STELEMREF);
10179
10180
10181 sig = mono_metadata_signature_alloc (mono_defaults.corlib, 3);
10182
10183 /* void stelemref (void* array, int idx, void* value) */
10184 sig->ret = &mono_defaults.void_class->byval_arg;
10185 sig->params [0] = &mono_defaults.object_class->byval_arg;
10186 sig->params [1] = &mono_defaults.int_class->byval_arg; /* this is a natural sized int */
10187 sig->params [2] = &mono_defaults.object_class->byval_arg;
10188
10189 #ifndef DISABLE_JIT
10190 aklass = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
10191 vklass = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
10192 array_slot_addr = mono_mb_add_local (mb, &mono_defaults.object_class->this_arg);
10193
10194 /*
10195 the method:
10196 <ldelema (bound check)>
10197 if (!value)
10198 goto store;
10199
10200 aklass = array->vtable->klass->element_class;
10201 vklass = value->vtable->klass;
10202
10203 if (vklass->idepth < aklass->idepth)
10204 goto long;
10205
10206 if (vklass->supertypes [aklass->idepth - 1] != aklass)
10207 goto long;
10208
10209 store:
10210 *array_slot_addr = value;
10211 return;
10212
10213 long:
10214 if (mono_object_isinst (value, aklass))
10215 goto store;
10216
10217 throw new ArrayTypeMismatchException ();
10218 */
10219
10220 /* ldelema (implicit bound check) */
10221 mono_mb_emit_ldarg (mb, 0);
10222 mono_mb_emit_ldarg (mb, 1);
10223 mono_mb_emit_op (mb, CEE_LDELEMA, mono_defaults.object_class);
10224 mono_mb_emit_stloc (mb, array_slot_addr);
10225
10226 /* if (!value) goto do_store */
10227 mono_mb_emit_ldarg (mb, 2);
10228 b1 = mono_mb_emit_branch (mb, CEE_BRFALSE);
10229
10230 /* aklass = array->vtable->klass->element_class */
10231 mono_mb_emit_ldarg (mb, 0);
10232 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoObject, vtable));
10233 mono_mb_emit_byte (mb, CEE_LDIND_I);
10234 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoVTable, klass));
10235 mono_mb_emit_byte (mb, CEE_LDIND_I);
10236 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoClass, element_class));
10237 mono_mb_emit_byte (mb, CEE_LDIND_I);
10238 mono_mb_emit_stloc (mb, aklass);
10239
10240 /* vklass = value->vtable->klass */
10241 mono_mb_emit_ldarg (mb, 2);
10242 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoObject, vtable));
10243 mono_mb_emit_byte (mb, CEE_LDIND_I);
10244 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoVTable, klass));
10245 mono_mb_emit_byte (mb, CEE_LDIND_I);
10246 mono_mb_emit_stloc (mb, vklass);
10247
10248 /* if (vklass->idepth < aklass->idepth) goto failue */
10249 mono_mb_emit_ldloc (mb, vklass);
10250 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoClass, idepth));
10251 mono_mb_emit_byte (mb, CEE_LDIND_U2);
10252
10253 mono_mb_emit_ldloc (mb, aklass);
10254 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoClass, idepth));
10255 mono_mb_emit_byte (mb, CEE_LDIND_U2);
10256
10257 b2 = mono_mb_emit_branch (mb, CEE_BLT_UN);
10258
10259 /* if (vklass->supertypes [aklass->idepth - 1] != aklass) goto failure */
10260 mono_mb_emit_ldloc (mb, vklass);
10261 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoClass, supertypes));
10262 mono_mb_emit_byte (mb, CEE_LDIND_I);
10263
10264 mono_mb_emit_ldloc (mb, aklass);
10265 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoClass, idepth));
10266 mono_mb_emit_byte (mb, CEE_LDIND_U2);
10267 mono_mb_emit_icon (mb, 1);
10268 mono_mb_emit_byte (mb, CEE_SUB);
10269 mono_mb_emit_icon (mb, sizeof (void*));
10270 mono_mb_emit_byte (mb, CEE_MUL);
10271 mono_mb_emit_byte (mb, CEE_ADD);
10272 mono_mb_emit_byte (mb, CEE_LDIND_I);
10273
10274 mono_mb_emit_ldloc (mb, aklass);
10275
10276 b3 = mono_mb_emit_branch (mb, CEE_BNE_UN);
10277
10278 copy_pos = mono_mb_get_label (mb);
10279 /* do_store */
10280 mono_mb_patch_branch (mb, b1);
10281 mono_mb_emit_ldloc (mb, array_slot_addr);
10282 mono_mb_emit_ldarg (mb, 2);
10283 mono_mb_emit_byte (mb, CEE_STIND_REF);
10284
10285 mono_mb_emit_byte (mb, CEE_RET);
10286
10287 /* the hard way */
10288 mono_mb_patch_branch (mb, b2);
10289 mono_mb_patch_branch (mb, b3);
10290
10291 mono_mb_emit_ldarg (mb, 2);
10292 mono_mb_emit_ldloc (mb, aklass);
10293 mono_mb_emit_icall (mb, mono_object_isinst_icall);
10294
10295 b4 = mono_mb_emit_branch (mb, CEE_BRTRUE);
10296 mono_mb_patch_addr (mb, b4, copy_pos - (b4 + 4));
10297 mono_mb_emit_exception (mb, "ArrayTypeMismatchException", NULL);
10298
10299 mono_mb_emit_byte (mb, CEE_RET);
10300 #endif
10301 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_NONE);
10302 ret = mono_mb_create (mb, sig, 4, info);
10303 mono_mb_free (mb);
10304
10305 return ret;
10306 }
10307
10308 /*
10309 * mono_marshal_get_gsharedvt_in_wrapper:
10310 *
10311 * This wrapper handles calls from normal code to gsharedvt code.
10312 */
10313 MonoMethod*
10314 mono_marshal_get_gsharedvt_in_wrapper (void)
10315 {
10316 static MonoMethod* ret = NULL;
10317 MonoMethodSignature *sig;
10318 MonoMethodBuilder *mb;
10319 WrapperInfo *info;
10320
10321 if (ret)
10322 return ret;
10323
10324 mb = mono_mb_new (mono_defaults.object_class, "gsharedvt_in", MONO_WRAPPER_UNKNOWN);
10325
10326 sig = mono_metadata_signature_alloc (mono_defaults.corlib, 0);
10327 sig->ret = &mono_defaults.void_class->byval_arg;
10328
10329 #ifndef DISABLE_JIT
10330 /*
10331 * The body is generated by the JIT, we use a wrapper instead of a trampoline so EH works.
10332 */
10333 mono_mb_emit_byte (mb, CEE_RET);
10334 #endif
10335 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_GSHAREDVT_IN);
10336 ret = mono_mb_create (mb, sig, 4, info);
10337 mono_mb_free (mb);
10338
10339 return ret;
10340 }
10341
10342 /*
10343 * mono_marshal_get_gsharedvt_out_wrapper:
10344 *
10345 * This wrapper handles calls from gsharedvt code to normal code.
10346 */
10347 MonoMethod*
10348 mono_marshal_get_gsharedvt_out_wrapper (void)
10349 {
10350 static MonoMethod* ret = NULL;
10351 MonoMethodSignature *sig;
10352 MonoMethodBuilder *mb;
10353 WrapperInfo *info;
10354
10355 if (ret)
10356 return ret;
10357
10358 mb = mono_mb_new (mono_defaults.object_class, "gsharedvt_out", MONO_WRAPPER_UNKNOWN);
10359
10360 sig = mono_metadata_signature_alloc (mono_defaults.corlib, 0);
10361 sig->ret = &mono_defaults.void_class->byval_arg;
10362
10363 #ifndef DISABLE_JIT
10364 /*
10365 * The body is generated by the JIT, we use a wrapper instead of a trampoline so EH works.
10366 */
10367 mono_mb_emit_byte (mb, CEE_RET);
10368 #endif
10369 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_GSHAREDVT_OUT);
10370 ret = mono_mb_create (mb, sig, 4, info);
10371 mono_mb_free (mb);
10372
10373 return ret;
10374 }
10375
10376 typedef struct {
10377 int rank;
10378 int elem_size;
10379 MonoMethod *method;
10380 } ArrayElemAddr;
10381
10382 /* LOCKING: vars accessed under the marshal lock */
10383 static ArrayElemAddr *elem_addr_cache = NULL;
10384 static int elem_addr_cache_size = 0;
10385 static int elem_addr_cache_next = 0;
10386
10387 /**
10388 * mono_marshal_get_array_address:
10389 * @rank: rank of the array type
10390 * @elem_size: size in bytes of an element of an array.
10391 *
10392 * Returns a MonoMethod that implements the code to get the address
10393 * of an element in a multi-dimenasional array of @rank dimensions.
10394 * The returned method takes an array as the first argument and then
10395 * @rank indexes for the @rank dimensions.
10396 * If ELEM_SIZE is 0, read the array size from the array object.
10397 */
10398 MonoMethod*
10399 mono_marshal_get_array_address (int rank, int elem_size)
10400 {
10401 MonoMethod *ret;
10402 MonoMethodBuilder *mb;
10403 MonoMethodSignature *sig;
10404 WrapperInfo *info;
10405 char *name;
10406 int i, bounds, ind, realidx;
10407 int branch_pos, *branch_positions;
10408 int cached;
10409
10410 ret = NULL;
10411 mono_marshal_lock ();
10412 for (i = 0; i < elem_addr_cache_next; ++i) {
10413 if (elem_addr_cache [i].rank == rank && elem_addr_cache [i].elem_size == elem_size) {
10414 ret = elem_addr_cache [i].method;
10415 break;
10416 }
10417 }
10418 mono_marshal_unlock ();
10419 if (ret)
10420 return ret;
10421
10422 branch_positions = g_new0 (int, rank);
10423
10424 sig = mono_metadata_signature_alloc (mono_defaults.corlib, 1 + rank);
10425
10426 /* void* address (void* array, int idx0, int idx1, int idx2, ...) */
10427 sig->ret = &mono_defaults.int_class->byval_arg;
10428 sig->params [0] = &mono_defaults.object_class->byval_arg;
10429 for (i = 0; i < rank; ++i) {
10430 sig->params [i + 1] = &mono_defaults.int32_class->byval_arg;
10431 }
10432
10433 name = g_strdup_printf ("ElementAddr_%d", elem_size);
10434 mb = mono_mb_new (mono_defaults.object_class, name, MONO_WRAPPER_MANAGED_TO_MANAGED);
10435 g_free (name);
10436
10437 #ifndef DISABLE_JIT
10438 bounds = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
10439 ind = mono_mb_add_local (mb, &mono_defaults.int32_class->byval_arg);
10440 realidx = mono_mb_add_local (mb, &mono_defaults.int32_class->byval_arg);
10441
10442 /* bounds = array->bounds; */
10443 mono_mb_emit_ldarg (mb, 0);
10444 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoArray, bounds));
10445 mono_mb_emit_byte (mb, CEE_LDIND_I);
10446 mono_mb_emit_stloc (mb, bounds);
10447
10448 /* ind is the overall element index, realidx is the partial index in a single dimension */
10449 /* ind = idx0 - bounds [0].lower_bound */
10450 mono_mb_emit_ldarg (mb, 1);
10451 mono_mb_emit_ldloc (mb, bounds);
10452 mono_mb_emit_icon (mb, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
10453 mono_mb_emit_byte (mb, CEE_ADD);
10454 mono_mb_emit_byte (mb, CEE_LDIND_I4);
10455 mono_mb_emit_byte (mb, CEE_SUB);
10456 mono_mb_emit_stloc (mb, ind);
10457 /* if (ind >= bounds [0].length) goto exeception; */
10458 mono_mb_emit_ldloc (mb, ind);
10459 mono_mb_emit_ldloc (mb, bounds);
10460 mono_mb_emit_icon (mb, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
10461 mono_mb_emit_byte (mb, CEE_ADD);
10462 mono_mb_emit_byte (mb, CEE_LDIND_I4);
10463 /* note that we use unsigned comparison */
10464 branch_pos = mono_mb_emit_branch (mb, CEE_BGE_UN);
10465
10466 /* For large ranks (> 4?) use a loop n IL later to reduce code size.
10467 * We could also decide to ignore the passed elem_size and get it
10468 * from the array object, to reduce the number of methods we generate:
10469 * the additional cost is 3 memory loads and a non-immediate mul.
10470 */
10471 for (i = 1; i < rank; ++i) {
10472 /* realidx = idxi - bounds [i].lower_bound */
10473 mono_mb_emit_ldarg (mb, 1 + i);
10474 mono_mb_emit_ldloc (mb, bounds);
10475 mono_mb_emit_icon (mb, (i * sizeof (MonoArrayBounds)) + MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
10476 mono_mb_emit_byte (mb, CEE_ADD);
10477 mono_mb_emit_byte (mb, CEE_LDIND_I4);
10478 mono_mb_emit_byte (mb, CEE_SUB);
10479 mono_mb_emit_stloc (mb, realidx);
10480 /* if (realidx >= bounds [i].length) goto exeception; */
10481 mono_mb_emit_ldloc (mb, realidx);
10482 mono_mb_emit_ldloc (mb, bounds);
10483 mono_mb_emit_icon (mb, (i * sizeof (MonoArrayBounds)) + MONO_STRUCT_OFFSET (MonoArrayBounds, length));
10484 mono_mb_emit_byte (mb, CEE_ADD);
10485 mono_mb_emit_byte (mb, CEE_LDIND_I4);
10486 branch_positions [i] = mono_mb_emit_branch (mb, CEE_BGE_UN);
10487 /* ind = ind * bounds [i].length + realidx */
10488 mono_mb_emit_ldloc (mb, ind);
10489 mono_mb_emit_ldloc (mb, bounds);
10490 mono_mb_emit_icon (mb, (i * sizeof (MonoArrayBounds)) + MONO_STRUCT_OFFSET (MonoArrayBounds, length));
10491 mono_mb_emit_byte (mb, CEE_ADD);
10492 mono_mb_emit_byte (mb, CEE_LDIND_I4);
10493 mono_mb_emit_byte (mb, CEE_MUL);
10494 mono_mb_emit_ldloc (mb, realidx);
10495 mono_mb_emit_byte (mb, CEE_ADD);
10496 mono_mb_emit_stloc (mb, ind);
10497 }
10498
10499 /* return array->vector + ind * element_size */
10500 mono_mb_emit_ldarg (mb, 0);
10501 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoArray, vector));
10502 mono_mb_emit_ldloc (mb, ind);
10503 if (elem_size) {
10504 mono_mb_emit_icon (mb, elem_size);
10505 } else {
10506 /* Load arr->vtable->klass->sizes.element_class */
10507 mono_mb_emit_ldarg (mb, 0);
10508 mono_mb_emit_byte (mb, CEE_CONV_I);
10509 mono_mb_emit_icon (mb, MONO_STRUCT_OFFSET (MonoObject, vtable));
10510 mono_mb_emit_byte (mb, CEE_ADD);
10511 mono_mb_emit_byte (mb, CEE_LDIND_I);
10512 mono_mb_emit_icon (mb, MONO_STRUCT_OFFSET (MonoVTable, klass));
10513 mono_mb_emit_byte (mb, CEE_ADD);
10514 mono_mb_emit_byte (mb, CEE_LDIND_I);
10515 /* sizes is an union, so this reads sizes.element_size */
10516 mono_mb_emit_icon (mb, MONO_STRUCT_OFFSET (MonoClass, sizes));
10517 mono_mb_emit_byte (mb, CEE_ADD);
10518 mono_mb_emit_byte (mb, CEE_LDIND_I4);
10519 }
10520 mono_mb_emit_byte (mb, CEE_MUL);
10521 mono_mb_emit_byte (mb, CEE_ADD);
10522 mono_mb_emit_byte (mb, CEE_RET);
10523
10524 /* patch the branches to get here and throw */
10525 for (i = 1; i < rank; ++i) {
10526 mono_mb_patch_branch (mb, branch_positions [i]);
10527 }
10528 mono_mb_patch_branch (mb, branch_pos);
10529 /* throw exception */
10530 mono_mb_emit_exception (mb, "IndexOutOfRangeException", NULL);
10531
10532 g_free (branch_positions);
10533 #endif /* DISABLE_JIT */
10534
10535 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_ELEMENT_ADDR);
10536 info->d.element_addr.rank = rank;
10537 info->d.element_addr.elem_size = elem_size;
10538 ret = mono_mb_create (mb, sig, 4, info);
10539 mono_mb_free (mb);
10540
10541 /* cache the result */
10542 cached = 0;
10543 mono_marshal_lock ();
10544 for (i = 0; i < elem_addr_cache_next; ++i) {
10545 if (elem_addr_cache [i].rank == rank && elem_addr_cache [i].elem_size == elem_size) {
10546 /* FIXME: free ret */
10547 ret = elem_addr_cache [i].method;
10548 cached = TRUE;
10549 break;
10550 }
10551 }
10552 if (!cached) {
10553 if (elem_addr_cache_next >= elem_addr_cache_size) {
10554 int new_size = elem_addr_cache_size + 4;
10555 ArrayElemAddr *new_array = g_new0 (ArrayElemAddr, new_size);
10556 memcpy (new_array, elem_addr_cache, elem_addr_cache_size * sizeof (ArrayElemAddr));
10557 g_free (elem_addr_cache);
10558 elem_addr_cache = new_array;
10559 elem_addr_cache_size = new_size;
10560 }
10561 elem_addr_cache [elem_addr_cache_next].rank = rank;
10562 elem_addr_cache [elem_addr_cache_next].elem_size = elem_size;
10563 elem_addr_cache [elem_addr_cache_next].method = ret;
10564 elem_addr_cache_next ++;
10565 }
10566 mono_marshal_unlock ();
10567 return ret;
10568 }
10569
10570 /*
10571 * mono_marshal_get_array_accessor_wrapper:
10572 *
10573 * Return a wrapper which just calls METHOD, which should be an Array Get/Set/Address method.
10574 */
10575 MonoMethod *
10576 mono_marshal_get_array_accessor_wrapper (MonoMethod *method)
10577 {
10578 MonoMethodSignature *sig;
10579 MonoMethodBuilder *mb;
10580 MonoMethod *res;
10581 GHashTable *cache;
10582 int i;
10583 MonoGenericContext *ctx = NULL;
10584 MonoMethod *orig_method = NULL;
10585 MonoGenericContainer *container = NULL;
10586 WrapperInfo *info;
10587
10588 /*
10589 * These wrappers are needed to avoid the JIT replacing the calls to these methods with intrinsics
10590 * inside runtime invoke wrappers, thereby making the wrappers not unshareable.
10591 * FIXME: Use generic methods.
10592 */
10593 /*
10594 * Check cache
10595 */
10596 if (ctx) {
10597 cache = NULL;
10598 g_assert_not_reached ();
10599 } else {
10600 cache = get_cache (&method->klass->image->array_accessor_cache, mono_aligned_addr_hash, NULL);
10601 if ((res = mono_marshal_find_in_cache (cache, method)))
10602 return res;
10603 }
10604
10605 sig = mono_metadata_signature_dup_full (method->klass->image, mono_method_signature (method));
10606 sig->pinvoke = 0;
10607
10608 mb = mono_mb_new (method->klass, method->name, MONO_WRAPPER_UNKNOWN);
10609
10610 #ifndef DISABLE_JIT
10611 /* Call the method */
10612 if (sig->hasthis)
10613 mono_mb_emit_ldarg (mb, 0);
10614 for (i = 0; i < sig->param_count; i++)
10615 mono_mb_emit_ldarg (mb, i + (sig->hasthis == TRUE));
10616
10617 if (ctx) {
10618 MonoError error;
10619 mono_mb_emit_managed_call (mb, mono_class_inflate_generic_method_checked (method, &container->context, &error), NULL);
10620 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
10621 } else {
10622 mono_mb_emit_managed_call (mb, method, NULL);
10623 }
10624 mono_mb_emit_byte (mb, CEE_RET);
10625 #endif
10626
10627 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_ARRAY_ACCESSOR);
10628 info->d.array_accessor.method = method;
10629
10630 if (ctx) {
10631 MonoMethod *def;
10632 def = mono_mb_create_and_cache_full (cache, method, mb, sig, sig->param_count + 16, info, NULL);
10633 res = cache_generic_wrapper (cache, orig_method, def, ctx, orig_method);
10634 } else {
10635 res = mono_mb_create_and_cache_full (cache, method,
10636 mb, sig, sig->param_count + 16,
10637 info, NULL);
10638 }
10639 mono_mb_free (mb);
10640
10641 return res;
10642 }
10643
10644 #ifndef HOST_WIN32
10645 static inline void*
10646 mono_marshal_alloc_co_task_mem (size_t size)
10647 {
10648 if ((gulong)size == 0)
10649 /* This returns a valid pointer for size 0 on MS.NET */
10650 size = 4;
10651
10652 return g_try_malloc ((gulong)size);
10653 }
10654 #endif
10655
10656 void*
10657 mono_marshal_alloc (gulong size, MonoError *error)
10658 {
10659 gpointer res;
10660
10661 error_init (error);
10662
10663 res = mono_marshal_alloc_co_task_mem (size);
10664 if (!res)
10665 mono_error_set_out_of_memory (error, "Could not allocate %lu bytes", size);
10666
10667 return res;
10668 }
10669
10670 /* This is a JIT icall, it sets the pending exception and returns NULL on error. */
10671 static void*
10672 ves_icall_marshal_alloc (gulong size)
10673 {
10674 MonoError error;
10675 void *ret = mono_marshal_alloc (size, &error);
10676 if (!mono_error_ok (&error)) {
10677 mono_error_set_pending_exception (&error);
10678 return NULL;
10679 }
10680
10681 return ret;
10682 }
10683
10684 #ifndef HOST_WIN32
10685 static inline void
10686 mono_marshal_free_co_task_mem (void *ptr)
10687 {
10688 g_free (ptr);
10689 return;
10690 }
10691 #endif
10692
10693 void
10694 mono_marshal_free (gpointer ptr)
10695 {
10696 mono_marshal_free_co_task_mem (ptr);
10697 }
10698
10699 void
10700 mono_marshal_free_array (gpointer *ptr, int size)
10701 {
10702 int i;
10703
10704 if (!ptr)
10705 return;
10706
10707 for (i = 0; i < size; i++)
10708 if (ptr [i])
10709 g_free (ptr [i]);
10710 }
10711
10712 void *
10713 mono_marshal_string_to_utf16 (MonoString *s)
10714 {
10715 return s ? mono_string_chars (s) : NULL;
10716 }
10717
10718 /* This is a JIT icall, it sets the pending exception and returns NULL on error. */
10719 static void *
10720 mono_marshal_string_to_utf16_copy (MonoString *s)
10721 {
10722 if (s == NULL) {
10723 return NULL;
10724 } else {
10725 MonoError error;
10726 gunichar2 *res = (gunichar2 *)mono_marshal_alloc ((mono_string_length (s) * 2) + 2, &error);
10727 if (!mono_error_ok (&error)) {
10728 mono_error_set_pending_exception (&error);
10729 return NULL;
10730 }
10731 memcpy (res, mono_string_chars (s), mono_string_length (s) * 2);
10732 res [mono_string_length (s)] = 0;
10733 return res;
10734 }
10735 }
10736
10737 /**
10738 * mono_marshal_set_last_error:
10739 *
10740 * This function is invoked to set the last error value from a P/Invoke call
10741 * which has SetLastError set.
10742 */
10743 void
10744 mono_marshal_set_last_error (void)
10745 {
10746 #ifdef WIN32
10747 mono_native_tls_set_value (last_error_tls_id, GINT_TO_POINTER (GetLastError ()));
10748 #else
10749 mono_native_tls_set_value (last_error_tls_id, GINT_TO_POINTER (errno));
10750 #endif
10751 }
10752
10753 static void
10754 mono_marshal_set_last_error_windows (int error)
10755 {
10756 #ifdef WIN32
10757 mono_native_tls_set_value (last_error_tls_id, GINT_TO_POINTER (error));
10758 #endif
10759 }
10760
10761 void
10762 ves_icall_System_Runtime_InteropServices_Marshal_copy_to_unmanaged (MonoArray *src, gint32 start_index,
10763 gpointer dest, gint32 length)
10764 {
10765 int element_size;
10766 void *source_addr;
10767
10768 MONO_CHECK_ARG_NULL (src,);
10769 MONO_CHECK_ARG_NULL (dest,);
10770
10771 if (src->obj.vtable->klass->rank != 1) {
10772 mono_set_pending_exception (mono_get_exception_argument ("array", "array is multi-dimensional"));
10773 return;
10774 }
10775 if (start_index < 0) {
10776 mono_set_pending_exception (mono_get_exception_argument ("startIndex", "Must be >= 0"));
10777 return;
10778 }
10779 if (length < 0) {
10780 mono_set_pending_exception (mono_get_exception_argument ("length", "Must be >= 0"));
10781 return;
10782 }
10783 if (start_index + length > mono_array_length (src)) {
10784 mono_set_pending_exception (mono_get_exception_argument ("length", "start_index + length > array length"));
10785 return;
10786 }
10787
10788 element_size = mono_array_element_size (src->obj.vtable->klass);
10789
10790 /* no references should be involved */
10791 source_addr = mono_array_addr_with_size_fast (src, element_size, start_index);
10792
10793 memcpy (dest, source_addr, length * element_size);
10794 }
10795
10796 void
10797 ves_icall_System_Runtime_InteropServices_Marshal_copy_from_unmanaged (gpointer src, gint32 start_index,
10798 MonoArray *dest, gint32 length)
10799 {
10800 int element_size;
10801 void *dest_addr;
10802
10803 MONO_CHECK_ARG_NULL (src,);
10804 MONO_CHECK_ARG_NULL (dest,);
10805
10806 if (dest->obj.vtable->klass->rank != 1) {
10807 mono_set_pending_exception (mono_get_exception_argument ("array", "array is multi-dimensional"));
10808 return;
10809 }
10810 if (start_index < 0) {
10811 mono_set_pending_exception (mono_get_exception_argument ("startIndex", "Must be >= 0"));
10812 return;
10813 }
10814 if (length < 0) {
10815 mono_set_pending_exception (mono_get_exception_argument ("length", "Must be >= 0"));
10816 return;
10817 }
10818 if (start_index + length > mono_array_length (dest)) {
10819 mono_set_pending_exception (mono_get_exception_argument ("length", "start_index + length > array length"));
10820 return;
10821 }
10822 element_size = mono_array_element_size (dest->obj.vtable->klass);
10823
10824 /* no references should be involved */
10825 dest_addr = mono_array_addr_with_size_fast (dest, element_size, start_index);
10826
10827 memcpy (dest_addr, src, length * element_size);
10828 }
10829
10830 MonoString *
10831 ves_icall_System_Runtime_InteropServices_Marshal_PtrToStringAnsi (char *ptr)
10832 {
10833 if (ptr == NULL)
10834 return NULL;
10835 else
10836 return mono_string_new (mono_domain_get (), ptr);
10837 }
10838
10839 MonoString *
10840 ves_icall_System_Runtime_InteropServices_Marshal_PtrToStringAnsi_len (char *ptr, gint32 len)
10841 {
10842 MonoError error;
10843 MonoString *result = NULL;
10844 error_init (&error);
10845 if (ptr == NULL)
10846 mono_error_set_argument_null (&error, "ptr", "");
10847 else
10848 result = mono_string_new_len_checked (mono_domain_get (), ptr, len, &error);
10849 mono_error_set_pending_exception (&error);
10850 return result;
10851 }
10852
10853 MonoString *
10854 ves_icall_System_Runtime_InteropServices_Marshal_PtrToStringUni (guint16 *ptr)
10855 {
10856 MonoError error;
10857 MonoString *res = NULL;
10858 MonoDomain *domain = mono_domain_get ();
10859 int len = 0;
10860 guint16 *t = ptr;
10861
10862 if (ptr == NULL)
10863 return NULL;
10864
10865 while (*t++)
10866 len++;
10867
10868 res = mono_string_new_utf16_checked (domain, ptr, len, &error);
10869 if (!mono_error_ok (&error)) {
10870 mono_error_set_pending_exception (&error);
10871 return NULL;
10872 }
10873 return res;
10874 }
10875
10876 MonoString *
10877 ves_icall_System_Runtime_InteropServices_Marshal_PtrToStringUni_len (guint16 *ptr, gint32 len)
10878 {
10879 MonoError error;
10880 MonoString *res = NULL;
10881 MonoDomain *domain = mono_domain_get ();
10882
10883 error_init (&error);
10884
10885 if (ptr == NULL) {
10886 res = NULL;
10887 mono_error_set_argument_null (&error, "ptr", "");
10888 } else {
10889 res = mono_string_new_utf16_checked (domain, ptr, len, &error);
10890 }
10891
10892 if (!mono_error_ok (&error))
10893 mono_error_set_pending_exception (&error);
10894 return res;
10895 }
10896
10897 guint32
10898 ves_icall_System_Runtime_InteropServices_Marshal_GetLastWin32Error (void)
10899 {
10900 return (GPOINTER_TO_INT (mono_native_tls_get_value (last_error_tls_id)));
10901 }
10902
10903 guint32
10904 ves_icall_System_Runtime_InteropServices_Marshal_SizeOf (MonoReflectionType *rtype)
10905 {
10906 MonoClass *klass;
10907 MonoType *type;
10908 guint32 layout;
10909
10910 MONO_CHECK_ARG_NULL (rtype, 0);
10911
10912 type = rtype->type;
10913 klass = mono_class_from_mono_type (type);
10914 if (!mono_class_init (klass)) {
10915 mono_set_pending_exception (mono_class_get_exception_for_failure (klass));
10916 return 0;
10917 }
10918
10919 layout = (mono_class_get_flags (klass) & TYPE_ATTRIBUTE_LAYOUT_MASK);
10920
10921 if (type->type == MONO_TYPE_PTR || type->type == MONO_TYPE_FNPTR) {
10922 return sizeof (gpointer);
10923 } else if (layout == TYPE_ATTRIBUTE_AUTO_LAYOUT) {
10924 gchar *msg;
10925 MonoException *exc;
10926
10927 msg = g_strdup_printf ("Type %s cannot be marshaled as an unmanaged structure.", klass->name);
10928 exc = mono_get_exception_argument ("t", msg);
10929 g_free (msg);
10930 mono_set_pending_exception (exc);
10931 return 0;
10932 }
10933
10934 return mono_class_native_size (klass, NULL);
10935 }
10936
10937 void
10938 ves_icall_System_Runtime_InteropServices_Marshal_StructureToPtr (MonoObject *obj, gpointer dst, MonoBoolean delete_old)
10939 {
10940 MonoError error;
10941 MonoMethod *method;
10942 gpointer pa [3];
10943
10944 MONO_CHECK_ARG_NULL (obj,);
10945 MONO_CHECK_ARG_NULL (dst,);
10946
10947 method = mono_marshal_get_struct_to_ptr (obj->vtable->klass);
10948
10949 pa [0] = obj;
10950 pa [1] = &dst;
10951 pa [2] = &delete_old;
10952
10953 mono_runtime_invoke_checked (method, NULL, pa, &error);
10954 if (!mono_error_ok (&error))
10955 mono_error_set_pending_exception (&error);
10956 }
10957
10958 static void
10959 ptr_to_structure (gpointer src, MonoObject *dst, MonoError *error)
10960 {
10961 MonoMethod *method;
10962 gpointer pa [2];
10963
10964 error_init (error);
10965
10966 method = mono_marshal_get_ptr_to_struct (dst->vtable->klass);
10967
10968 pa [0] = &src;
10969 pa [1] = dst;
10970
10971 mono_runtime_invoke_checked (method, NULL, pa, error);
10972 }
10973
10974 void
10975 ves_icall_System_Runtime_InteropServices_Marshal_PtrToStructure (gpointer src, MonoObject *dst)
10976 {
10977 MonoType *t;
10978 MonoError error;
10979
10980 MONO_CHECK_ARG_NULL (src,);
10981 MONO_CHECK_ARG_NULL (dst,);
10982
10983 t = mono_type_get_underlying_type (mono_class_get_type (dst->vtable->klass));
10984
10985 if (t->type == MONO_TYPE_VALUETYPE) {
10986 MonoException *exc;
10987 gchar *tmp;
10988
10989 tmp = g_strdup_printf ("Destination is a boxed value type.");
10990 exc = mono_get_exception_argument ("dst", tmp);
10991 g_free (tmp);
10992
10993 mono_set_pending_exception (exc);
10994 return;
10995 }
10996
10997 ptr_to_structure (src, dst, &error);
10998 if (!mono_error_ok (&error))
10999 mono_error_set_pending_exception (&error);
11000 }
11001
11002 MonoObject *
11003 ves_icall_System_Runtime_InteropServices_Marshal_PtrToStructure_type (gpointer src, MonoReflectionType *type)
11004 {
11005 MonoError error;
11006 MonoClass *klass;
11007 MonoDomain *domain = mono_domain_get ();
11008 MonoObject *res;
11009
11010 if (src == NULL)
11011 return NULL;
11012 MONO_CHECK_ARG_NULL (type, NULL);
11013
11014 klass = mono_class_from_mono_type (type->type);
11015 if (!mono_class_init (klass)) {
11016 mono_set_pending_exception (mono_class_get_exception_for_failure (klass));
11017 return NULL;
11018 }
11019
11020 res = mono_object_new_checked (domain, klass, &error);
11021 if (!mono_error_ok (&error)) {
11022 mono_error_set_pending_exception (&error);
11023 return NULL;
11024 }
11025
11026 ptr_to_structure (src, res, &error);
11027 if (!mono_error_ok (&error)) {
11028 mono_error_set_pending_exception (&error);
11029 return NULL;
11030 }
11031
11032 return res;
11033 }
11034
11035 int
11036 ves_icall_System_Runtime_InteropServices_Marshal_OffsetOf (MonoReflectionType *type, MonoString *field_name)
11037 {
11038 MonoError error;
11039 MonoMarshalType *info;
11040 MonoClass *klass;
11041 char *fname;
11042 int match_index = -1;
11043
11044 MONO_CHECK_ARG_NULL (type, 0);
11045 MONO_CHECK_ARG_NULL (field_name, 0);
11046
11047 fname = mono_string_to_utf8_checked (field_name, &error);
11048 if (mono_error_set_pending_exception (&error))
11049 return 0;
11050 klass = mono_class_from_mono_type (type->type);
11051 if (!mono_class_init (klass)) {
11052 mono_set_pending_exception (mono_class_get_exception_for_failure (klass));
11053 return 0;
11054 }
11055
11056 while (klass && match_index == -1) {
11057 MonoClassField* field;
11058 int i = 0;
11059 gpointer iter = NULL;
11060 while ((field = mono_class_get_fields (klass, &iter))) {
11061 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
11062 continue;
11063 if (!strcmp (fname, mono_field_get_name (field))) {
11064 match_index = i;
11065 break;
11066 }
11067 i ++;
11068 }
11069
11070 if (match_index == -1)
11071 klass = klass->parent;
11072 }
11073
11074 g_free (fname);
11075
11076 if(match_index == -1) {
11077 MonoException* exc;
11078 gchar *tmp;
11079
11080 /* Get back original class instance */
11081 klass = mono_class_from_mono_type (type->type);
11082
11083 tmp = g_strdup_printf ("Field passed in is not a marshaled member of the type %s", klass->name);
11084 exc = mono_get_exception_argument ("fieldName", tmp);
11085 g_free (tmp);
11086
11087 mono_set_pending_exception ((MonoException*)exc);
11088 return 0;
11089 }
11090
11091 info = mono_marshal_load_type_info (klass);
11092 return info->fields [match_index].offset;
11093 }
11094
11095 #ifndef HOST_WIN32
11096 gpointer
11097 ves_icall_System_Runtime_InteropServices_Marshal_StringToHGlobalAnsi (MonoString *string)
11098 {
11099 MonoError error;
11100 char *ret = mono_string_to_utf8_checked (string, &error);
11101 mono_error_set_pending_exception (&error);
11102 return ret;
11103 }
11104
11105 gpointer
11106 ves_icall_System_Runtime_InteropServices_Marshal_StringToHGlobalUni (MonoString *string)
11107 {
11108 if (string == NULL)
11109 return NULL;
11110 else {
11111 gunichar2 *res = (gunichar2 *)g_malloc ((mono_string_length (string) + 1) * 2);
11112
11113 memcpy (res, mono_string_chars (string), mono_string_length (string) * 2);
11114 res [mono_string_length (string)] = 0;
11115 return res;
11116 }
11117 }
11118 #endif /* !HOST_WIN32 */
11119
11120 static void
11121 mono_struct_delete_old (MonoClass *klass, char *ptr)
11122 {
11123 MonoMarshalType *info;
11124 int i;
11125
11126 info = mono_marshal_load_type_info (klass);
11127
11128 for (i = 0; i < info->num_fields; i++) {
11129 MonoMarshalConv conv;
11130 MonoType *ftype = info->fields [i].field->type;
11131 char *cpos;
11132
11133 if (ftype->attrs & FIELD_ATTRIBUTE_STATIC)
11134 continue;
11135
11136 mono_type_to_unmanaged (ftype, info->fields [i].mspec, TRUE,
11137 klass->unicode, &conv);
11138
11139 cpos = ptr + info->fields [i].offset;
11140
11141 switch (conv) {
11142 case MONO_MARSHAL_CONV_NONE:
11143 if (MONO_TYPE_ISSTRUCT (ftype)) {
11144 mono_struct_delete_old (ftype->data.klass, cpos);
11145 continue;
11146 }
11147 break;
11148 case MONO_MARSHAL_CONV_STR_LPWSTR:
11149 /* We assume this field points inside a MonoString */
11150 break;
11151 case MONO_MARSHAL_CONV_STR_LPTSTR:
11152 #ifdef TARGET_WIN32
11153 /* We assume this field points inside a MonoString
11154 * on Win32 */
11155 break;
11156 #endif
11157 case MONO_MARSHAL_CONV_STR_LPSTR:
11158 case MONO_MARSHAL_CONV_STR_BSTR:
11159 case MONO_MARSHAL_CONV_STR_ANSIBSTR:
11160 case MONO_MARSHAL_CONV_STR_TBSTR:
11161 case MONO_MARSHAL_CONV_STR_UTF8STR:
11162 mono_marshal_free (*(gpointer *)cpos);
11163 break;
11164
11165 default:
11166 continue;
11167 }
11168 }
11169 }
11170
11171 void
11172 ves_icall_System_Runtime_InteropServices_Marshal_DestroyStructure (gpointer src, MonoReflectionType *type)
11173 {
11174 MonoClass *klass;
11175
11176 MONO_CHECK_ARG_NULL (src,);
11177 MONO_CHECK_ARG_NULL (type,);
11178
11179 klass = mono_class_from_mono_type (type->type);
11180 if (!mono_class_init (klass)) {
11181 mono_set_pending_exception (mono_class_get_exception_for_failure (klass));
11182 return;
11183 }
11184
11185 mono_struct_delete_old (klass, (char *)src);
11186 }
11187
11188 #ifndef HOST_WIN32
11189 static inline void *
11190 mono_marshal_alloc_hglobal (size_t size)
11191 {
11192 return g_try_malloc (size);
11193 }
11194 #endif
11195
11196 void*
11197 ves_icall_System_Runtime_InteropServices_Marshal_AllocHGlobal (gpointer size)
11198 {
11199 gpointer res;
11200 size_t s = (size_t)size;
11201
11202 if (s == 0)
11203 /* This returns a valid pointer for size 0 on MS.NET */
11204 s = 4;
11205
11206 res = mono_marshal_alloc_hglobal (s);
11207
11208 if (!res) {
11209 mono_set_pending_exception (mono_domain_get ()->out_of_memory_ex);
11210 return NULL;
11211 }
11212
11213 return res;
11214 }
11215
11216 #ifndef HOST_WIN32
11217 static inline gpointer
11218 mono_marshal_realloc_hglobal (gpointer ptr, size_t size)
11219 {
11220 return g_try_realloc (ptr, size);
11221 }
11222 #endif
11223
11224 gpointer
11225 ves_icall_System_Runtime_InteropServices_Marshal_ReAllocHGlobal (gpointer ptr, gpointer size)
11226 {
11227 gpointer res;
11228 size_t s = (size_t)size;
11229
11230 if (ptr == NULL) {
11231 mono_set_pending_exception (mono_domain_get ()->out_of_memory_ex);
11232 return NULL;
11233 }
11234
11235 res = mono_marshal_realloc_hglobal (ptr, s);
11236
11237 if (!res) {
11238 mono_set_pending_exception (mono_domain_get ()->out_of_memory_ex);
11239 return NULL;
11240 }
11241
11242 return res;
11243 }
11244
11245 #ifndef HOST_WIN32
11246 static inline void
11247 mono_marshal_free_hglobal (gpointer ptr)
11248 {
11249 g_free (ptr);
11250 return;
11251 }
11252 #endif
11253
11254 void
11255 ves_icall_System_Runtime_InteropServices_Marshal_FreeHGlobal (void *ptr)
11256 {
11257 mono_marshal_free_hglobal (ptr);
11258 }
11259
11260 void*
11261 ves_icall_System_Runtime_InteropServices_Marshal_AllocCoTaskMem (int size)
11262 {
11263 void *res = mono_marshal_alloc_co_task_mem (size);
11264
11265 if (!res) {
11266 mono_set_pending_exception (mono_domain_get ()->out_of_memory_ex);
11267 return NULL;
11268 }
11269 return res;
11270 }
11271
11272 void*
11273 ves_icall_System_Runtime_InteropServices_Marshal_AllocCoTaskMemSize (gulong size)
11274 {
11275 void *res = mono_marshal_alloc_co_task_mem (size);
11276
11277 if (!res) {
11278 mono_set_pending_exception (mono_domain_get ()->out_of_memory_ex);
11279 return NULL;
11280 }
11281 return res;
11282 }
11283
11284 void
11285 ves_icall_System_Runtime_InteropServices_Marshal_FreeCoTaskMem (void *ptr)
11286 {
11287 mono_marshal_free_co_task_mem (ptr);
11288 return;
11289 }
11290
11291 #ifndef HOST_WIN32
11292 static inline gpointer
11293 mono_marshal_realloc_co_task_mem (gpointer ptr, size_t size)
11294 {
11295 return g_try_realloc (ptr, (gulong)size);
11296 }
11297 #endif
11298
11299 gpointer
11300 ves_icall_System_Runtime_InteropServices_Marshal_ReAllocCoTaskMem (gpointer ptr, int size)
11301 {
11302 void *res = mono_marshal_realloc_co_task_mem (ptr, size);
11303
11304 if (!res) {
11305 mono_set_pending_exception (mono_domain_get ()->out_of_memory_ex);
11306 return NULL;
11307 }
11308 return res;
11309 }
11310
11311 void*
11312 ves_icall_System_Runtime_InteropServices_Marshal_UnsafeAddrOfPinnedArrayElement (MonoArray *arrayobj, int index)
11313 {
11314 return mono_array_addr_with_size_fast (arrayobj, mono_array_element_size (arrayobj->obj.vtable->klass), index);
11315 }
11316
11317 MonoDelegate*
11318 ves_icall_System_Runtime_InteropServices_Marshal_GetDelegateForFunctionPointerInternal (void *ftn, MonoReflectionType *type)
11319 {
11320 MonoClass *klass = mono_type_get_class (type->type);
11321 if (!mono_class_init (klass)) {
11322 mono_set_pending_exception (mono_class_get_exception_for_failure (klass));
11323 return NULL;
11324 }
11325
11326 return mono_ftnptr_to_delegate (klass, ftn);
11327 }
11328
11329 gpointer
11330 ves_icall_System_Runtime_InteropServices_Marshal_GetFunctionPointerForDelegateInternal (MonoDelegate *delegate)
11331 {
11332 return mono_delegate_to_ftnptr (delegate);
11333 }
11334
11335 /**
11336 * mono_marshal_is_loading_type_info:
11337 *
11338 * Return whenever mono_marshal_load_type_info () is being executed for KLASS by this
11339 * thread.
11340 */
11341 static gboolean
11342 mono_marshal_is_loading_type_info (MonoClass *klass)
11343 {
11344 GSList *loads_list = (GSList *)mono_native_tls_get_value (load_type_info_tls_id);
11345
11346 return g_slist_find (loads_list, klass) != NULL;
11347 }
11348
11349 /**
11350 * mono_marshal_load_type_info:
11351 *
11352 * Initialize klass::marshal_info using information from metadata. This function can
11353 * recursively call itself, and the caller is responsible to avoid that by calling
11354 * mono_marshal_is_loading_type_info () beforehand.
11355 *
11356 * LOCKING: Acquires the loader lock.
11357 */
11358 MonoMarshalType *
11359 mono_marshal_load_type_info (MonoClass* klass)
11360 {
11361 int j, count = 0;
11362 guint32 native_size = 0, min_align = 1, packing;
11363 MonoMarshalType *info;
11364 MonoClassField* field;
11365 gpointer iter;
11366 guint32 layout;
11367 GSList *loads_list;
11368
11369 g_assert (klass != NULL);
11370
11371 info = mono_class_get_marshal_info (klass);
11372 if (info)
11373 return info;
11374
11375 if (!klass->inited)
11376 mono_class_init (klass);
11377
11378 info = mono_class_get_marshal_info (klass);
11379 if (info)
11380 return info;
11381
11382 /*
11383 * This function can recursively call itself, so we keep the list of classes which are
11384 * under initialization in a TLS list.
11385 */
11386 g_assert (!mono_marshal_is_loading_type_info (klass));
11387 loads_list = (GSList *)mono_native_tls_get_value (load_type_info_tls_id);
11388 loads_list = g_slist_prepend (loads_list, klass);
11389 mono_native_tls_set_value (load_type_info_tls_id, loads_list);
11390
11391 iter = NULL;
11392 while ((field = mono_class_get_fields (klass, &iter))) {
11393 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
11394 continue;
11395 if (mono_field_is_deleted (field))
11396 continue;
11397 count++;
11398 }
11399
11400 layout = mono_class_get_flags (klass) & TYPE_ATTRIBUTE_LAYOUT_MASK;
11401
11402 /* The mempool is protected by the loader lock */
11403 info = (MonoMarshalType *)mono_image_alloc0 (klass->image, MONO_SIZEOF_MARSHAL_TYPE + sizeof (MonoMarshalField) * count);
11404 info->num_fields = count;
11405
11406 /* Try to find a size for this type in metadata */
11407 mono_metadata_packing_from_typedef (klass->image, klass->type_token, NULL, &native_size);
11408
11409 if (klass->parent) {
11410 int parent_size = mono_class_native_size (klass->parent, NULL);
11411
11412 /* Add parent size to real size */
11413 native_size += parent_size;
11414 info->native_size = parent_size;
11415 }
11416
11417 packing = klass->packing_size ? klass->packing_size : 8;
11418 iter = NULL;
11419 j = 0;
11420 while ((field = mono_class_get_fields (klass, &iter))) {
11421 int size;
11422 guint32 align;
11423
11424 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
11425 continue;
11426
11427 if (mono_field_is_deleted (field))
11428 continue;
11429 if (field->type->attrs & FIELD_ATTRIBUTE_HAS_FIELD_MARSHAL)
11430 mono_metadata_field_info_with_mempool (klass->image, mono_metadata_token_index (mono_class_get_field_token (field)) - 1,
11431 NULL, NULL, &info->fields [j].mspec);
11432
11433 info->fields [j].field = field;
11434
11435 if ((mono_class_num_fields (klass) == 1) && (klass->instance_size == sizeof (MonoObject)) &&
11436 (strcmp (mono_field_get_name (field), "$PRIVATE$") == 0)) {
11437 /* This field is a hack inserted by MCS to empty structures */
11438 continue;
11439 }
11440
11441 switch (layout) {
11442 case TYPE_ATTRIBUTE_AUTO_LAYOUT:
11443 case TYPE_ATTRIBUTE_SEQUENTIAL_LAYOUT:
11444 size = mono_marshal_type_size (field->type, info->fields [j].mspec,
11445 &align, TRUE, klass->unicode);
11446 align = klass->packing_size ? MIN (klass->packing_size, align): align;
11447 min_align = MAX (align, min_align);
11448 info->fields [j].offset = info->native_size;
11449 info->fields [j].offset += align - 1;
11450 info->fields [j].offset &= ~(align - 1);
11451 info->native_size = info->fields [j].offset + size;
11452 break;
11453 case TYPE_ATTRIBUTE_EXPLICIT_LAYOUT:
11454 size = mono_marshal_type_size (field->type, info->fields [j].mspec,
11455 &align, TRUE, klass->unicode);
11456 min_align = MAX (align, min_align);
11457 info->fields [j].offset = field->offset - sizeof (MonoObject);
11458 info->native_size = MAX (info->native_size, info->fields [j].offset + size);
11459 break;
11460 }
11461 j++;
11462 }
11463
11464 if (klass->byval_arg.type == MONO_TYPE_PTR)
11465 info->native_size = sizeof (gpointer);
11466
11467 if (layout != TYPE_ATTRIBUTE_AUTO_LAYOUT) {
11468 info->native_size = MAX (native_size, info->native_size);
11469 /*
11470 * If the provided Size is equal or larger than the calculated size, and there
11471 * was no Pack attribute, we set min_align to 1 to avoid native_size being increased
11472 */
11473 if (layout == TYPE_ATTRIBUTE_EXPLICIT_LAYOUT) {
11474 if (native_size && native_size == info->native_size && klass->packing_size == 0)
11475 min_align = 1;
11476 else
11477 min_align = MIN (min_align, packing);
11478 }
11479 }
11480
11481 if (info->native_size & (min_align - 1)) {
11482 info->native_size += min_align - 1;
11483 info->native_size &= ~(min_align - 1);
11484 }
11485
11486 info->min_align = min_align;
11487
11488 /* Update the class's blittable info, if the layouts don't match */
11489 if (info->native_size != mono_class_value_size (klass, NULL))
11490 klass->blittable = FALSE;
11491
11492 /* If this is an array type, ensure that we have element info */
11493 if (klass->rank && !mono_marshal_is_loading_type_info (klass->element_class)) {
11494 mono_marshal_load_type_info (klass->element_class);
11495 }
11496
11497 loads_list = (GSList *)mono_native_tls_get_value (load_type_info_tls_id);
11498 loads_list = g_slist_remove (loads_list, klass);
11499 mono_native_tls_set_value (load_type_info_tls_id, loads_list);
11500
11501 mono_marshal_lock ();
11502 MonoMarshalType *info2 = mono_class_get_marshal_info (klass);
11503 if (!info2) {
11504 /*We do double-checking locking on marshal_info */
11505 mono_memory_barrier ();
11506 mono_class_set_marshal_info (klass, info);
11507 ++class_marshal_info_count;
11508 info2 = info;
11509 }
11510 mono_marshal_unlock ();
11511
11512 return info2;
11513 }
11514
11515 /**
11516 * mono_class_native_size:
11517 * @klass: a class
11518 *
11519 * Returns: the native size of an object instance (when marshaled
11520 * to unmanaged code)
11521 */
11522 gint32
11523 mono_class_native_size (MonoClass *klass, guint32 *align)
11524 {
11525 MonoMarshalType *info = mono_class_get_marshal_info (klass);
11526 if (!info) {
11527 if (mono_marshal_is_loading_type_info (klass)) {
11528 if (align)
11529 *align = 0;
11530 return 0;
11531 } else {
11532 mono_marshal_load_type_info (klass);
11533 }
11534 info = mono_class_get_marshal_info (klass);
11535 }
11536
11537 if (align)
11538 *align = info->min_align;
11539
11540 return info->native_size;
11541 }
11542
11543 /*
11544 * mono_type_native_stack_size:
11545 * @t: the type to return the size it uses on the stack
11546 *
11547 * Returns: the number of bytes required to hold an instance of this
11548 * type on the native stack
11549 */
11550 int
11551 mono_type_native_stack_size (MonoType *t, guint32 *align)
11552 {
11553 guint32 tmp;
11554
11555 g_assert (t != NULL);
11556
11557 if (!align)
11558 align = &tmp;
11559
11560 if (t->byref) {
11561 *align = sizeof (gpointer);
11562 return sizeof (gpointer);
11563 }
11564
11565 switch (t->type){
11566 case MONO_TYPE_BOOLEAN:
11567 case MONO_TYPE_CHAR:
11568 case MONO_TYPE_I1:
11569 case MONO_TYPE_U1:
11570 case MONO_TYPE_I2:
11571 case MONO_TYPE_U2:
11572 case MONO_TYPE_I4:
11573 case MONO_TYPE_U4:
11574 *align = 4;
11575 return 4;
11576 case MONO_TYPE_I:
11577 case MONO_TYPE_U:
11578 case MONO_TYPE_STRING:
11579 case MONO_TYPE_OBJECT:
11580 case MONO_TYPE_CLASS:
11581 case MONO_TYPE_SZARRAY:
11582 case MONO_TYPE_PTR:
11583 case MONO_TYPE_FNPTR:
11584 case MONO_TYPE_ARRAY:
11585 *align = sizeof (gpointer);
11586 return sizeof (gpointer);
11587 case MONO_TYPE_R4:
11588 *align = 4;
11589 return 4;
11590 case MONO_TYPE_R8:
11591 *align = MONO_ABI_ALIGNOF (double);
11592 return 8;
11593 case MONO_TYPE_I8:
11594 case MONO_TYPE_U8:
11595 *align = MONO_ABI_ALIGNOF (gint64);
11596 return 8;
11597 case MONO_TYPE_GENERICINST:
11598 if (!mono_type_generic_inst_is_valuetype (t)) {
11599 *align = sizeof (gpointer);
11600 return sizeof (gpointer);
11601 }
11602 /* Fall through */
11603 case MONO_TYPE_TYPEDBYREF:
11604 case MONO_TYPE_VALUETYPE: {
11605 guint32 size;
11606 MonoClass *klass = mono_class_from_mono_type (t);
11607
11608 if (klass->enumtype)
11609 return mono_type_native_stack_size (mono_class_enum_basetype (klass), align);
11610 else {
11611 size = mono_class_native_size (klass, align);
11612 *align = *align + 3;
11613 *align &= ~3;
11614
11615 size += 3;
11616 size &= ~3;
11617
11618 return size;
11619 }
11620 }
11621 default:
11622 g_error ("type 0x%02x unknown", t->type);
11623 }
11624 return 0;
11625 }
11626
11627 gint32
11628 mono_marshal_type_size (MonoType *type, MonoMarshalSpec *mspec, guint32 *align,
11629 gboolean as_field, gboolean unicode)
11630 {
11631 MonoMarshalNative native_type = mono_type_to_unmanaged (type, mspec, as_field, unicode, NULL);
11632 MonoClass *klass;
11633
11634 switch (native_type) {
11635 case MONO_NATIVE_BOOLEAN:
11636 *align = 4;
11637 return 4;
11638 case MONO_NATIVE_I1:
11639 case MONO_NATIVE_U1:
11640 *align = 1;
11641 return 1;
11642 case MONO_NATIVE_I2:
11643 case MONO_NATIVE_U2:
11644 case MONO_NATIVE_VARIANTBOOL:
11645 *align = 2;
11646 return 2;
11647 case MONO_NATIVE_I4:
11648 case MONO_NATIVE_U4:
11649 case MONO_NATIVE_ERROR:
11650 *align = 4;
11651 return 4;
11652 case MONO_NATIVE_I8:
11653 case MONO_NATIVE_U8:
11654 *align = MONO_ABI_ALIGNOF (gint64);
11655 return 8;
11656 case MONO_NATIVE_R4:
11657 *align = 4;
11658 return 4;
11659 case MONO_NATIVE_R8:
11660 *align = MONO_ABI_ALIGNOF (double);
11661 return 8;
11662 case MONO_NATIVE_INT:
11663 case MONO_NATIVE_UINT:
11664 case MONO_NATIVE_LPSTR:
11665 case MONO_NATIVE_LPWSTR:
11666 case MONO_NATIVE_LPTSTR:
11667 case MONO_NATIVE_BSTR:
11668 case MONO_NATIVE_ANSIBSTR:
11669 case MONO_NATIVE_TBSTR:
11670 case MONO_NATIVE_UTF8STR:
11671 case MONO_NATIVE_LPARRAY:
11672 case MONO_NATIVE_SAFEARRAY:
11673 case MONO_NATIVE_IUNKNOWN:
11674 case MONO_NATIVE_IDISPATCH:
11675 case MONO_NATIVE_INTERFACE:
11676 case MONO_NATIVE_ASANY:
11677 case MONO_NATIVE_FUNC:
11678 case MONO_NATIVE_LPSTRUCT:
11679 *align = MONO_ABI_ALIGNOF (gpointer);
11680 return sizeof (gpointer);
11681 case MONO_NATIVE_STRUCT:
11682 klass = mono_class_from_mono_type (type);
11683 if (klass == mono_defaults.object_class &&
11684 (mspec && mspec->native == MONO_NATIVE_STRUCT)) {
11685 *align = 16;
11686 return 16;
11687 }
11688 return mono_class_native_size (klass, align);
11689 case MONO_NATIVE_BYVALTSTR: {
11690 int esize = unicode ? 2: 1;
11691 g_assert (mspec);
11692 *align = esize;
11693 return mspec->data.array_data.num_elem * esize;
11694 }
11695 case MONO_NATIVE_BYVALARRAY: {
11696 // FIXME: Have to consider ArraySubType
11697 int esize;
11698 klass = mono_class_from_mono_type (type);
11699 if (klass->element_class == mono_defaults.char_class) {
11700 esize = unicode ? 2 : 1;
11701 *align = esize;
11702 } else {
11703 esize = mono_class_native_size (klass->element_class, align);
11704 }
11705 g_assert (mspec);
11706 return mspec->data.array_data.num_elem * esize;
11707 }
11708 case MONO_NATIVE_CUSTOM:
11709 *align = sizeof (gpointer);
11710 return sizeof (gpointer);
11711 break;
11712 case MONO_NATIVE_CURRENCY:
11713 case MONO_NATIVE_VBBYREFSTR:
11714 default:
11715 g_error ("native type %02x not implemented", native_type);
11716 break;
11717 }
11718 g_assert_not_reached ();
11719 return 0;
11720 }
11721
11722 /* This is a JIT icall, it sets the pending exception and return NULL on error */
11723 gpointer
11724 mono_marshal_asany (MonoObject *o, MonoMarshalNative string_encoding, int param_attrs)
11725 {
11726 MonoError error;
11727 MonoType *t;
11728 MonoClass *klass;
11729
11730 if (o == NULL)
11731 return NULL;
11732
11733 t = &o->vtable->klass->byval_arg;
11734 switch (t->type) {
11735 case MONO_TYPE_I4:
11736 case MONO_TYPE_U4:
11737 case MONO_TYPE_PTR:
11738 case MONO_TYPE_I1:
11739 case MONO_TYPE_U1:
11740 case MONO_TYPE_BOOLEAN:
11741 case MONO_TYPE_I2:
11742 case MONO_TYPE_U2:
11743 case MONO_TYPE_CHAR:
11744 case MONO_TYPE_I8:
11745 case MONO_TYPE_U8:
11746 case MONO_TYPE_R4:
11747 case MONO_TYPE_R8:
11748 return mono_object_unbox (o);
11749 break;
11750 case MONO_TYPE_STRING:
11751 switch (string_encoding) {
11752 case MONO_NATIVE_LPWSTR:
11753 return mono_marshal_string_to_utf16_copy ((MonoString*)o);
11754 case MONO_NATIVE_LPSTR:
11755 case MONO_NATIVE_UTF8STR:
11756 // Same code path, because in Mono, we treated strings as Utf8
11757 return mono_string_to_utf8str ((MonoString*)o);
11758 default:
11759 g_warning ("marshaling conversion %d not implemented", string_encoding);
11760 g_assert_not_reached ();
11761 }
11762 break;
11763 case MONO_TYPE_CLASS:
11764 case MONO_TYPE_VALUETYPE: {
11765 MonoMethod *method;
11766 gpointer pa [3];
11767 gpointer res;
11768 MonoBoolean delete_old = FALSE;
11769
11770 klass = t->data.klass;
11771
11772 if (mono_class_is_auto_layout (klass))
11773 break;
11774
11775 if (klass->valuetype && (mono_class_is_explicit_layout (klass) || klass->blittable || klass->enumtype))
11776 return mono_object_unbox (o);
11777
11778 res = mono_marshal_alloc (mono_class_native_size (klass, NULL), &error);
11779 if (!mono_error_ok (&error)) {
11780 mono_error_set_pending_exception (&error);
11781 return NULL;
11782 }
11783
11784 if (!((param_attrs & PARAM_ATTRIBUTE_OUT) && !(param_attrs & PARAM_ATTRIBUTE_IN))) {
11785 method = mono_marshal_get_struct_to_ptr (o->vtable->klass);
11786
11787 pa [0] = o;
11788 pa [1] = &res;
11789 pa [2] = &delete_old;
11790
11791 mono_runtime_invoke_checked (method, NULL, pa, &error);
11792 if (!mono_error_ok (&error)) {
11793 mono_error_set_pending_exception (&error);
11794 return NULL;
11795 }
11796 }
11797
11798 return res;
11799 }
11800 default:
11801 break;
11802 }
11803 mono_set_pending_exception (mono_get_exception_argument ("", "No PInvoke conversion exists for value passed to Object-typed parameter."));
11804 return NULL;
11805 }
11806
11807 /* This is a JIT icall, it sets the pending exception */
11808 void
11809 mono_marshal_free_asany (MonoObject *o, gpointer ptr, MonoMarshalNative string_encoding, int param_attrs)
11810 {
11811 MonoError error;
11812 MonoType *t;
11813 MonoClass *klass;
11814
11815 if (o == NULL)
11816 return;
11817
11818 t = &o->vtable->klass->byval_arg;
11819 switch (t->type) {
11820 case MONO_TYPE_STRING:
11821 switch (string_encoding) {
11822 case MONO_NATIVE_LPWSTR:
11823 case MONO_NATIVE_LPSTR:
11824 case MONO_NATIVE_UTF8STR:
11825 mono_marshal_free (ptr);
11826 break;
11827 default:
11828 g_warning ("marshaling conversion %d not implemented", string_encoding);
11829 g_assert_not_reached ();
11830 }
11831 break;
11832 case MONO_TYPE_CLASS:
11833 case MONO_TYPE_VALUETYPE: {
11834 klass = t->data.klass;
11835
11836 if (klass->valuetype && (mono_class_is_explicit_layout (klass) || klass->blittable || klass->enumtype))
11837 break;
11838
11839 if (param_attrs & PARAM_ATTRIBUTE_OUT) {
11840 MonoMethod *method = mono_marshal_get_ptr_to_struct (o->vtable->klass);
11841 gpointer pa [2];
11842
11843 pa [0] = &ptr;
11844 pa [1] = o;
11845
11846 mono_runtime_invoke_checked (method, NULL, pa, &error);
11847 if (!mono_error_ok (&error)) {
11848 mono_error_set_pending_exception (&error);
11849 return;
11850 }
11851 }
11852
11853 if (!((param_attrs & PARAM_ATTRIBUTE_OUT) && !(param_attrs & PARAM_ATTRIBUTE_IN))) {
11854 mono_struct_delete_old (klass, (char *)ptr);
11855 }
11856
11857 mono_marshal_free (ptr);
11858 break;
11859 }
11860 default:
11861 break;
11862 }
11863 }
11864
11865 /*
11866 * mono_marshal_get_generic_array_helper:
11867 *
11868 * Return a wrapper which is used to implement the implicit interfaces on arrays.
11869 * The wrapper routes calls to METHOD, which is one of the InternalArray_ methods in Array.
11870 */
11871 MonoMethod *
11872 mono_marshal_get_generic_array_helper (MonoClass *klass, gchar *name, MonoMethod *method)
11873 {
11874 MonoMethodSignature *sig, *csig;
11875 MonoMethodBuilder *mb;
11876 MonoMethod *res;
11877 WrapperInfo *info;
11878 int i;
11879
11880 mb = mono_mb_new_no_dup_name (klass, name, MONO_WRAPPER_MANAGED_TO_MANAGED);
11881 mb->method->slot = -1;
11882
11883 mb->method->flags = METHOD_ATTRIBUTE_PRIVATE | METHOD_ATTRIBUTE_VIRTUAL |
11884 METHOD_ATTRIBUTE_NEW_SLOT | METHOD_ATTRIBUTE_HIDE_BY_SIG | METHOD_ATTRIBUTE_FINAL;
11885
11886 sig = mono_method_signature (method);
11887 csig = mono_metadata_signature_dup_full (method->klass->image, sig);
11888 csig->generic_param_count = 0;
11889
11890 #ifndef DISABLE_JIT
11891 mono_mb_emit_ldarg (mb, 0);
11892 for (i = 0; i < csig->param_count; i++)
11893 mono_mb_emit_ldarg (mb, i + 1);
11894 mono_mb_emit_managed_call (mb, method, NULL);
11895 mono_mb_emit_byte (mb, CEE_RET);
11896
11897 /* We can corlib internal methods */
11898 mb->skip_visibility = TRUE;
11899 #endif
11900 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_GENERIC_ARRAY_HELPER);
11901 info->d.generic_array_helper.method = method;
11902 res = mono_mb_create (mb, csig, csig->param_count + 16, info);
11903
11904 mono_mb_free (mb);
11905
11906 return res;
11907 }
11908
11909 /*
11910 * The mono_win32_compat_* functions are implementations of inline
11911 * Windows kernel32 APIs, which are DllImport-able under MS.NET,
11912 * although not exported by kernel32.
11913 *
11914 * We map the appropiate kernel32 entries to these functions using
11915 * dllmaps declared in the global etc/mono/config.
11916 */
11917
11918 void
11919 mono_win32_compat_CopyMemory (gpointer dest, gconstpointer source, gsize length)
11920 {
11921 if (!dest || !source)
11922 return;
11923
11924 memcpy (dest, source, length);
11925 }
11926
11927 void
11928 mono_win32_compat_FillMemory (gpointer dest, gsize length, guchar fill)
11929 {
11930 memset (dest, fill, length);
11931 }
11932
11933 void
11934 mono_win32_compat_MoveMemory (gpointer dest, gconstpointer source, gsize length)
11935 {
11936 if (!dest || !source)
11937 return;
11938
11939 memmove (dest, source, length);
11940 }
11941
11942 void
11943 mono_win32_compat_ZeroMemory (gpointer dest, gsize length)
11944 {
11945 memset (dest, 0, length);
11946 }
11947
11948 void
11949 mono_marshal_find_nonzero_bit_offset (guint8 *buf, int len, int *byte_offset, guint8 *bitmask)
11950 {
11951 int i;
11952 guint8 byte;
11953
11954 for (i = 0; i < len; ++i)
11955 if (buf [i])
11956 break;
11957
11958 g_assert (i < len);
11959
11960 byte = buf [i];
11961 while (byte && !(byte & 1))
11962 byte >>= 1;
11963 g_assert (byte == 1);
11964
11965 *byte_offset = i;
11966 *bitmask = buf [i];
11967 }
11968
11969 MonoMethod *
11970 mono_marshal_get_thunk_invoke_wrapper (MonoMethod *method)
11971 {
11972 MonoMethodBuilder *mb;
11973 MonoMethodSignature *sig, *csig;
11974 MonoExceptionClause *clause;
11975 MonoImage *image;
11976 MonoClass *klass;
11977 GHashTable *cache;
11978 MonoMethod *res;
11979 int i, param_count, sig_size, pos_leave;
11980
11981 g_assert (method);
11982
11983 // FIXME: we need to store the exception into a MonoHandle
11984 g_assert (!mono_threads_is_coop_enabled ());
11985
11986 klass = method->klass;
11987 image = method->klass->image;
11988
11989 cache = get_cache (&mono_method_get_wrapper_cache (method)->thunk_invoke_cache, mono_aligned_addr_hash, NULL);
11990
11991 if ((res = mono_marshal_find_in_cache (cache, method)))
11992 return res;
11993
11994 sig = mono_method_signature (method);
11995 mb = mono_mb_new (klass, method->name, MONO_WRAPPER_NATIVE_TO_MANAGED);
11996
11997 /* add "this" and exception param */
11998 param_count = sig->param_count + sig->hasthis + 1;
11999
12000 /* dup & extend signature */
12001 csig = mono_metadata_signature_alloc (image, param_count);
12002 sig_size = MONO_SIZEOF_METHOD_SIGNATURE + sig->param_count * sizeof (MonoType *);
12003 memcpy (csig, sig, sig_size);
12004 csig->param_count = param_count;
12005 csig->hasthis = 0;
12006 csig->pinvoke = 1;
12007 csig->call_convention = MONO_CALL_DEFAULT;
12008
12009 if (sig->hasthis) {
12010 /* add "this" */
12011 csig->params [0] = &klass->byval_arg;
12012 /* move params up by one */
12013 for (i = 0; i < sig->param_count; i++)
12014 csig->params [i + 1] = sig->params [i];
12015 }
12016
12017 /* setup exception param as byref+[out] */
12018 csig->params [param_count - 1] = mono_metadata_type_dup (image,
12019 &mono_defaults.exception_class->byval_arg);
12020 csig->params [param_count - 1]->byref = 1;
12021 csig->params [param_count - 1]->attrs = PARAM_ATTRIBUTE_OUT;
12022
12023 /* convert struct return to object */
12024 if (MONO_TYPE_ISSTRUCT (sig->ret))
12025 csig->ret = &mono_defaults.object_class->byval_arg;
12026
12027 #ifndef DISABLE_JIT
12028 /* local 0 (temp for exception object) */
12029 mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
12030
12031 /* local 1 (temp for result) */
12032 if (!MONO_TYPE_IS_VOID (sig->ret))
12033 mono_mb_add_local (mb, sig->ret);
12034
12035 /* clear exception arg */
12036 mono_mb_emit_ldarg (mb, param_count - 1);
12037 mono_mb_emit_byte (mb, CEE_LDNULL);
12038 mono_mb_emit_byte (mb, CEE_STIND_REF);
12039
12040 /* try */
12041 clause = (MonoExceptionClause *)mono_image_alloc0 (image, sizeof (MonoExceptionClause));
12042 clause->try_offset = mono_mb_get_label (mb);
12043
12044 /* push method's args */
12045 for (i = 0; i < param_count - 1; i++) {
12046 MonoType *type;
12047 MonoClass *klass;
12048
12049 mono_mb_emit_ldarg (mb, i);
12050
12051 /* get the byval type of the param */
12052 klass = mono_class_from_mono_type (csig->params [i]);
12053 type = &klass->byval_arg;
12054
12055 /* unbox struct args */
12056 if (MONO_TYPE_ISSTRUCT (type)) {
12057 mono_mb_emit_op (mb, CEE_UNBOX, klass);
12058
12059 /* byref args & and the "this" arg must remain a ptr.
12060 Otherwise make a copy of the value type */
12061 if (!(csig->params [i]->byref || (i == 0 && sig->hasthis)))
12062 mono_mb_emit_op (mb, CEE_LDOBJ, klass);
12063
12064 csig->params [i] = &mono_defaults.object_class->byval_arg;
12065 }
12066 }
12067
12068 /* call */
12069 if (method->flags & METHOD_ATTRIBUTE_VIRTUAL)
12070 mono_mb_emit_op (mb, CEE_CALLVIRT, method);
12071 else
12072 mono_mb_emit_op (mb, CEE_CALL, method);
12073
12074 /* save result at local 1 */
12075 if (!MONO_TYPE_IS_VOID (sig->ret))
12076 mono_mb_emit_stloc (mb, 1);
12077
12078 pos_leave = mono_mb_emit_branch (mb, CEE_LEAVE);
12079
12080 /* catch */
12081 clause->flags = MONO_EXCEPTION_CLAUSE_NONE;
12082 clause->try_len = mono_mb_get_pos (mb) - clause->try_offset;
12083 clause->data.catch_class = mono_defaults.object_class;
12084
12085 clause->handler_offset = mono_mb_get_label (mb);
12086
12087 /* store exception at local 0 */
12088 mono_mb_emit_stloc (mb, 0);
12089 mono_mb_emit_ldarg (mb, param_count - 1);
12090 mono_mb_emit_ldloc (mb, 0);
12091 mono_mb_emit_byte (mb, CEE_STIND_REF);
12092 mono_mb_emit_branch (mb, CEE_LEAVE);
12093
12094 clause->handler_len = mono_mb_get_pos (mb) - clause->handler_offset;
12095
12096 mono_mb_set_clauses (mb, 1, clause);
12097
12098 mono_mb_patch_branch (mb, pos_leave);
12099 /* end-try */
12100
12101 if (!MONO_TYPE_IS_VOID (sig->ret)) {
12102 mono_mb_emit_ldloc (mb, 1);
12103
12104 /* box the return value */
12105 if (MONO_TYPE_ISSTRUCT (sig->ret))
12106 mono_mb_emit_op (mb, CEE_BOX, mono_class_from_mono_type (sig->ret));
12107 }
12108
12109 mono_mb_emit_byte (mb, CEE_RET);
12110 #endif
12111
12112 res = mono_mb_create_and_cache (cache, method, mb, csig, param_count + 16);
12113 mono_mb_free (mb);
12114
12115 return res;
12116 }
12117
12118 /*
12119 * mono_marshal_free_dynamic_wrappers:
12120 *
12121 * Free wrappers of the dynamic method METHOD.
12122 */
12123 void
12124 mono_marshal_free_dynamic_wrappers (MonoMethod *method)
12125 {
12126 MonoImage *image = method->klass->image;
12127
12128 g_assert (method_is_dynamic (method));
12129
12130 /* This could be called during shutdown */
12131 if (marshal_mutex_initialized)
12132 mono_marshal_lock ();
12133 /*
12134 * FIXME: We currently leak the wrappers. Freeing them would be tricky as
12135 * they could be shared with other methods ?
12136 */
12137 if (image->wrapper_caches.runtime_invoke_direct_cache)
12138 g_hash_table_remove (image->wrapper_caches.runtime_invoke_direct_cache, method);
12139 if (image->wrapper_caches.delegate_abstract_invoke_cache)
12140 g_hash_table_foreach_remove (image->wrapper_caches.delegate_abstract_invoke_cache, signature_pointer_pair_matches_pointer, method);
12141 // FIXME: Need to clear the caches in other images as well
12142 if (image->delegate_bound_static_invoke_cache)
12143 g_hash_table_remove (image->delegate_bound_static_invoke_cache, mono_method_signature (method));
12144
12145 if (marshal_mutex_initialized)
12146 mono_marshal_unlock ();
12147 }
12148
12149 static void
12150 mono_marshal_ftnptr_eh_callback (guint32 gchandle)
12151 {
12152 g_assert (ftnptr_eh_callback);
12153 ftnptr_eh_callback (gchandle);
12154 }
12155
12156 static void
12157 ftnptr_eh_callback_default (guint32 gchandle)
12158 {
12159 MonoException *exc;
12160 gpointer stackdata;
12161
12162 mono_threads_enter_gc_unsafe_region_unbalanced (&stackdata);
12163
12164 exc = (MonoException*) mono_gchandle_get_target (gchandle);
12165
12166 mono_gchandle_free (gchandle);
12167
12168 mono_raise_exception (exc);
12169 }
12170
12171 /*
12172 * mono_install_ftnptr_eh_callback:
12173 *
12174 * Install a callback that should be called when there is a managed exception
12175 * in a native-to-managed wrapper. This is mainly used by iOS to convert a
12176 * managed exception to a native exception, to properly unwind the native
12177 * stack; this native exception will then be converted back to a managed
12178 * exception in their managed-to-native wrapper.
12179 */
12180 void
12181 mono_install_ftnptr_eh_callback (MonoFtnPtrEHCallback callback)
12182 {
12183 ftnptr_eh_callback = callback;
12184 }
12185
12186 static MonoThreadInfo*
12187 mono_icall_start (HandleStackMark *stackmark, MonoError *error)
12188 {
12189 MonoThreadInfo *info = mono_thread_info_current ();
12190
12191 mono_stack_mark_init (info, stackmark);
12192 error_init (error);
12193 return info;
12194 }
12195
12196 static void
12197 mono_icall_end (MonoThreadInfo *info, HandleStackMark *stackmark, MonoError *error)
12198 {
12199 mono_stack_mark_pop (info, stackmark);
12200 if (G_UNLIKELY (!is_ok (error)))
12201 mono_error_set_pending_exception (error);
12202 }
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