3 * Routines for marshaling complex types in P/Invoke methods.
6 * Paolo Molaro (lupus@ximian.com)
8 * (C) 2002 Ximian, Inc. http://www.ximian.com
12 #ifndef __MONO_MARSHAL_H__
13 #define __MONO_MARSHAL_H__
15 #include <mono/metadata/class.h>
16 #include <mono/metadata/object-internals.h>
17 #include <mono/metadata/class-internals.h>
18 #include <mono/metadata/opcodes.h>
19 #include <mono/metadata/reflection.h>
20 #include <mono/metadata/method-builder.h>
21 #include <mono/metadata/remoting.h>
22 #include <mono/utils/mono-error.h>
24 #define mono_marshal_find_bitfield_offset(type, elem, byte_offset, bitmask) \
27 memset (&tmp, 0, sizeof (tmp)); \
29 mono_marshal_find_nonzero_bit_offset ((guint8*)&tmp, sizeof (tmp), (byte_offset), (bitmask)); \
33 * This structure holds the state kept by the emit_ marshalling functions.
34 * This is exported so it can be used by cominterop.c.
37 MonoMethodBuilder *mb;
38 MonoMethodSignature *sig;
39 MonoMethodPInvoke *piinfo;
40 int *orig_conv_args; /* Locals containing the original values of byref args */
43 MonoClass *retobj_class;
44 MonoMethodSignature *csig; /* Might need to be changed due to MarshalAs directives */
45 MonoImage *image; /* The image to use for looking up custom marshallers */
50 * This is invoked to convert arguments from the current types to
51 * the underlying types expected by the platform routine. If required,
52 * the methods create a temporary variable with the proper type, and return
53 * the location for it (either the passed argument, or the newly allocated
56 MARSHAL_ACTION_CONV_IN,
59 * This operation is called to push the actual value that was optionally
60 * converted on the first stage
65 * Convert byref arguments back or free resources allocated during the
68 MARSHAL_ACTION_CONV_OUT,
71 * The result from the unmanaged call is at the top of the stack when
72 * this action is invoked. The result should be stored in the
73 * third local variable slot.
75 MARSHAL_ACTION_CONV_RESULT,
77 MARSHAL_ACTION_MANAGED_CONV_IN,
78 MARSHAL_ACTION_MANAGED_CONV_OUT,
79 MARSHAL_ACTION_MANAGED_CONV_RESULT
83 * This is an extension of the MONO_WRAPPER_ enum to avoid adding more elements to that
88 /* Subtypes of MONO_WRAPPER_MANAGED_TO_MANAGED */
89 WRAPPER_SUBTYPE_ELEMENT_ADDR,
90 WRAPPER_SUBTYPE_STRING_CTOR,
91 /* Subtypes of MONO_WRAPPER_STELEMREF */
92 WRAPPER_SUBTYPE_VIRTUAL_STELEMREF,
93 /* Subtypes of MONO_WRAPPER_UNKNOWN */
94 WRAPPER_SUBTYPE_FAST_MONITOR_ENTER,
95 WRAPPER_SUBTYPE_FAST_MONITOR_ENTER_V4,
96 WRAPPER_SUBTYPE_FAST_MONITOR_EXIT,
97 WRAPPER_SUBTYPE_PTR_TO_STRUCTURE,
98 WRAPPER_SUBTYPE_STRUCTURE_TO_PTR,
99 /* Subtypes of MONO_WRAPPER_CASTCLASS */
100 WRAPPER_SUBTYPE_CASTCLASS_WITH_CACHE,
101 WRAPPER_SUBTYPE_ISINST_WITH_CACHE,
102 /* Subtypes of MONO_WRAPPER_RUNTIME_INVOKE */
103 WRAPPER_SUBTYPE_RUNTIME_INVOKE_NORMAL,
104 WRAPPER_SUBTYPE_RUNTIME_INVOKE_DYNAMIC,
105 WRAPPER_SUBTYPE_RUNTIME_INVOKE_DIRECT,
106 WRAPPER_SUBTYPE_RUNTIME_INVOKE_VIRTUAL,
107 /* Subtypes of MONO_WRAPPER_MANAGED_TO_NATIVE */
108 WRAPPER_SUBTYPE_ICALL_WRAPPER,
109 WRAPPER_SUBTYPE_NATIVE_FUNC_AOT,
110 WRAPPER_SUBTYPE_PINVOKE,
111 /* Subtypes of MONO_WRAPPER_UNKNOWN */
112 WRAPPER_SUBTYPE_SYNCHRONIZED_INNER,
113 WRAPPER_SUBTYPE_GSHAREDVT_IN,
114 WRAPPER_SUBTYPE_GSHAREDVT_OUT,
115 WRAPPER_SUBTYPE_ARRAY_ACCESSOR,
116 /* Subtypes of MONO_WRAPPER_MANAGED_TO_MANAGED */
117 WRAPPER_SUBTYPE_GENERIC_ARRAY_HELPER,
118 /* Subtypes of MONO_WRAPPER_DELEGATE_INVOKE */
119 WRAPPER_SUBTYPE_DELEGATE_INVOKE_VIRTUAL,
120 WRAPPER_SUBTYPE_DELEGATE_INVOKE_BOUND,
121 /* Subtypes of MONO_WRAPPER_UNKNOWN */
122 WRAPPER_SUBTYPE_GSHAREDVT_IN_SIG,
123 WRAPPER_SUBTYPE_GSHAREDVT_OUT_SIG,
124 WRAPPER_SUBTYPE_INTERP_IN
130 } NativeToManagedWrapperInfo;
134 } StringCtorWrapperInfo;
138 } VirtualStelemrefWrapperInfo;
141 guint32 rank, elem_size;
142 } ElementAddrWrapperInfo;
146 /* For WRAPPER_SUBTYPE_RUNTIME_INVOKE_NORMAL */
147 MonoMethodSignature *sig;
148 } RuntimeInvokeWrapperInfo;
152 } ManagedToNativeWrapperInfo;
156 } SynchronizedWrapperInfo;
160 } SynchronizedInnerWrapperInfo;
164 } GenericArrayHelperWrapperInfo;
172 } ArrayAccessorWrapperInfo;
181 } AllocatorWrapperInfo;
189 } RemotingWrapperInfo;
192 MonoMethodSignature *sig;
193 } GsharedvtWrapperInfo;
197 } DelegateInvokeWrapperInfo;
200 MonoMethodSignature *sig;
201 } InterpInWrapperInfo;
204 * This structure contains additional information to uniquely identify a given wrapper
205 * method. It can be retrieved by mono_marshal_get_wrapper_info () for certain types
206 * of wrappers, i.e. ones which do not have a 1-1 association with a method/class.
209 WrapperSubtype subtype;
211 /* RUNTIME_INVOKE_... */
212 RuntimeInvokeWrapperInfo runtime_invoke;
214 StringCtorWrapperInfo string_ctor;
216 ElementAddrWrapperInfo element_addr;
217 /* VIRTUAL_STELEMREF */
218 VirtualStelemrefWrapperInfo virtual_stelemref;
219 /* MONO_WRAPPER_NATIVE_TO_MANAGED */
220 NativeToManagedWrapperInfo native_to_managed;
221 /* MONO_WRAPPER_MANAGED_TO_NATIVE */
222 ManagedToNativeWrapperInfo managed_to_native;
224 SynchronizedWrapperInfo synchronized;
225 /* SYNCHRONIZED_INNER */
226 SynchronizedInnerWrapperInfo synchronized_inner;
227 /* GENERIC_ARRAY_HELPER */
228 GenericArrayHelperWrapperInfo generic_array_helper;
230 ICallWrapperInfo icall;
232 ArrayAccessorWrapperInfo array_accessor;
233 /* PROXY_ISINST etc. */
234 ProxyWrapperInfo proxy;
236 AllocatorWrapperInfo alloc;
238 UnboxWrapperInfo unbox;
239 /* MONO_WRAPPER_REMOTING_INVOKE/MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK/MONO_WRAPPER_XDOMAIN_INVOKE */
240 RemotingWrapperInfo remoting;
241 /* GSHAREDVT_IN_SIG/GSHAREDVT_OUT_SIG */
242 GsharedvtWrapperInfo gsharedvt;
243 /* DELEGATE_INVOKE */
244 DelegateInvokeWrapperInfo delegate_invoke;
246 InterpInWrapperInfo interp_in;
252 /*type of the function pointer of methods returned by mono_marshal_get_runtime_invoke*/
253 typedef MonoObject *(*RuntimeInvokeFunction) (MonoObject *this_obj, void **params, MonoObject **exc, void* compiled_method);
255 typedef void (*RuntimeInvokeDynamicFunction) (void *args, MonoObject **exc, void* compiled_method);
257 /* marshaling helper functions */
260 mono_marshal_init (void);
263 mono_marshal_init_tls (void);
266 mono_marshal_cleanup (void);
269 mono_class_native_size (MonoClass *klass, guint32 *align);
272 mono_marshal_load_type_info (MonoClass* klass);
275 mono_marshal_type_size (MonoType *type, MonoMarshalSpec *mspec, guint32 *align,
276 gboolean as_field, gboolean unicode);
279 mono_type_native_stack_size (MonoType *type, guint32 *alignment);
282 mono_string_to_ansibstr (MonoString *string_obj);
285 mono_ptr_to_bstr (gpointer ptr, int slen);
288 mono_string_to_bstr(MonoString* str);
290 void mono_delegate_free_ftnptr (MonoDelegate *delegate);
293 mono_marshal_set_last_error (void);
296 mono_type_to_ldind (MonoType *type);
299 mono_type_to_stind (MonoType *type);
301 /* functions to create various architecture independent helper functions */
304 mono_marshal_method_from_wrapper (MonoMethod *wrapper);
307 mono_wrapper_info_create (MonoMethodBuilder *mb, WrapperSubtype subtype);
310 mono_marshal_set_wrapper_info (MonoMethod *method, WrapperInfo *info);
313 mono_marshal_get_wrapper_info (MonoMethod *wrapper);
316 mono_marshal_get_delegate_begin_invoke (MonoMethod *method);
319 mono_marshal_get_delegate_end_invoke (MonoMethod *method);
322 mono_marshal_get_delegate_invoke (MonoMethod *method, MonoDelegate *del);
325 mono_marshal_get_delegate_invoke_internal (MonoMethod *method, gboolean callvirt, gboolean static_method_with_first_arg_bound, MonoMethod *target_method);
328 mono_marshal_get_runtime_invoke_full (MonoMethod *method, gboolean virtual_, gboolean need_direct_wrapper);
331 mono_marshal_get_runtime_invoke (MonoMethod *method, gboolean is_virtual);
334 mono_marshal_get_runtime_invoke_dynamic (void);
337 mono_marshal_get_runtime_invoke_for_sig (MonoMethodSignature *sig);
340 mono_marshal_get_string_ctor_signature (MonoMethod *method);
343 mono_marshal_get_managed_wrapper (MonoMethod *method, MonoClass *delegate_klass, uint32_t this_loc, MonoError *exernal_error);
346 mono_marshal_get_vtfixup_ftnptr (MonoImage *image, guint32 token, guint16 type);
349 mono_marshal_get_icall_wrapper (MonoMethodSignature *sig, const char *name, gconstpointer func, gboolean check_exceptions);
352 mono_marshal_get_native_wrapper (MonoMethod *method, gboolean check_exceptions, gboolean aot);
355 mono_marshal_get_native_func_wrapper (MonoImage *image, MonoMethodSignature *sig, MonoMethodPInvoke *piinfo, MonoMarshalSpec **mspecs, gpointer func);
358 mono_marshal_get_native_func_wrapper_aot (MonoClass *klass);
361 mono_marshal_get_struct_to_ptr (MonoClass *klass);
364 mono_marshal_get_ptr_to_struct (MonoClass *klass);
367 mono_marshal_get_synchronized_wrapper (MonoMethod *method);
370 mono_marshal_get_synchronized_inner_wrapper (MonoMethod *method);
373 mono_marshal_get_unbox_wrapper (MonoMethod *method);
376 mono_marshal_get_castclass_with_cache (void);
379 mono_marshal_get_isinst_with_cache (void);
382 mono_marshal_get_stelemref (void);
385 mono_marshal_get_virtual_stelemref (MonoClass *array_class);
388 mono_marshal_get_virtual_stelemref_wrappers (int *nwrappers);
391 mono_marshal_get_array_address (int rank, int elem_size);
394 mono_marshal_get_array_accessor_wrapper (MonoMethod *method);
397 mono_marshal_get_generic_array_helper (MonoClass *klass, gchar *name, MonoMethod *method);
400 mono_marshal_get_thunk_invoke_wrapper (MonoMethod *method);
403 mono_marshal_get_gsharedvt_in_wrapper (void);
406 mono_marshal_get_gsharedvt_out_wrapper (void);
409 mono_marshal_free_dynamic_wrappers (MonoMethod *method);
412 mono_marshal_lock_internal (void);
415 mono_marshal_unlock_internal (void);
417 /* marshaling internal calls */
420 mono_marshal_alloc (gsize size, MonoError *error);
423 mono_marshal_free (gpointer ptr);
426 mono_marshal_free_array (gpointer *ptr, int size);
429 mono_marshal_free_ccw (MonoObject* obj);
432 cominterop_release_all_rcws (void);
435 ves_icall_System_Runtime_InteropServices_Marshal_copy_to_unmanaged (MonoArray *src, gint32 start_index,
436 gpointer dest, gint32 length);
439 ves_icall_System_Runtime_InteropServices_Marshal_copy_from_unmanaged (gpointer src, gint32 start_index,
440 MonoArray *dest, gint32 length);
443 ves_icall_System_Runtime_InteropServices_Marshal_PtrToStringAnsi (char *ptr, MonoError *error);
446 ves_icall_System_Runtime_InteropServices_Marshal_PtrToStringAnsi_len (char *ptr, gint32 len);
449 ves_icall_System_Runtime_InteropServices_Marshal_PtrToStringUni (guint16 *ptr);
452 ves_icall_System_Runtime_InteropServices_Marshal_PtrToStringUni_len (guint16 *ptr, gint32 len);
455 ves_icall_System_Runtime_InteropServices_Marshal_PtrToStringBSTR (gpointer ptr);
458 ves_icall_System_Runtime_InteropServices_Marshal_GetComSlotForMethodInfoInternal (MonoReflectionMethod *m);
461 ves_icall_System_Runtime_InteropServices_Marshal_GetLastWin32Error (void);
464 ves_icall_System_Runtime_InteropServices_Marshal_SizeOf (MonoReflectionTypeHandle rtype, MonoError *error);
467 ves_icall_System_Runtime_InteropServices_Marshal_StructureToPtr (MonoObject *obj, gpointer dst, MonoBoolean delete_old);
470 ves_icall_System_Runtime_InteropServices_Marshal_PtrToStructure (gpointer src, MonoObject *dst);
473 ves_icall_System_Runtime_InteropServices_Marshal_PtrToStructure_type (gpointer src, MonoReflectionType *type);
476 ves_icall_System_Runtime_InteropServices_Marshal_OffsetOf (MonoReflectionTypeHandle type, MonoStringHandle field_name, MonoError *error);
479 ves_icall_System_Runtime_InteropServices_Marshal_StringToBSTR (MonoString *string);
482 ves_icall_System_Runtime_InteropServices_Marshal_BufferToBSTR (MonoArray *ptr, int len);
485 ves_icall_System_Runtime_InteropServices_Marshal_StringToHGlobalAnsi (MonoString *string);
488 ves_icall_System_Runtime_InteropServices_Marshal_StringToHGlobalUni (MonoString *string);
491 ves_icall_System_Runtime_InteropServices_Marshal_DestroyStructure (gpointer src, MonoReflectionType *type);
494 ves_icall_System_Runtime_InteropServices_Marshal_AllocCoTaskMem (int size);
497 ves_icall_System_Runtime_InteropServices_Marshal_AllocCoTaskMemSize (gulong size);
500 ves_icall_System_Runtime_InteropServices_Marshal_FreeCoTaskMem (void *ptr);
503 ves_icall_System_Runtime_InteropServices_Marshal_ReAllocCoTaskMem (gpointer ptr, int size);
506 ves_icall_System_Runtime_InteropServices_Marshal_AllocHGlobal (gpointer size);
509 ves_icall_System_Runtime_InteropServices_Marshal_ReAllocHGlobal (gpointer ptr, gpointer size);
512 ves_icall_System_Runtime_InteropServices_Marshal_FreeHGlobal (void *ptr);
515 ves_icall_System_Runtime_InteropServices_Marshal_FreeBSTR (void *ptr);
518 ves_icall_System_Runtime_InteropServices_Marshal_UnsafeAddrOfPinnedArrayElement (MonoArray *arrayobj, int index);
521 ves_icall_System_Runtime_InteropServices_Marshal_GetDelegateForFunctionPointerInternal (void *ftn, MonoReflectionTypeHandle type, MonoError *error);
524 ves_icall_System_Runtime_InteropServices_Marshal_GetFunctionPointerForDelegateInternal (MonoDelegateHandle delegate, MonoError *error);
527 ves_icall_System_Runtime_InteropServices_Marshal_AddRefInternal (gpointer pUnk);
530 ves_icall_System_Runtime_InteropServices_Marshal_QueryInterfaceInternal (gpointer pUnk, gpointer riid, gpointer* ppv);
533 ves_icall_System_Runtime_InteropServices_Marshal_ReleaseInternal (gpointer pUnk);
536 ves_icall_System_Runtime_InteropServices_Marshal_GetIUnknownForObjectInternal (MonoObject* object);
539 ves_icall_System_Runtime_InteropServices_Marshal_GetObjectForCCW (void* pUnk);
542 ves_icall_System_Runtime_InteropServices_Marshal_GetIDispatchForObjectInternal (MonoObject* object);
545 ves_icall_System_Runtime_InteropServices_Marshal_GetCCW (MonoObject* object, MonoReflectionType* type);
548 ves_icall_System_Runtime_InteropServices_Marshal_IsComObject (MonoObject* object);
551 ves_icall_System_Runtime_InteropServices_Marshal_ReleaseComObjectInternal (MonoObject* object);
554 ves_icall_System_ComObject_CreateRCW (MonoReflectionType *type);
557 ves_icall_System_ComObject_ReleaseInterfaces(MonoComObject* obj);
560 ves_icall_System_ComObject_GetInterfaceInternal (MonoComObject* obj, MonoReflectionType* type, MonoBoolean throw_exception);
563 ves_icall_Mono_Interop_ComInteropProxy_AddProxy (gpointer pUnk, MonoComInteropProxy* proxy);
566 ves_icall_Mono_Interop_ComInteropProxy_FindProxy (gpointer pUnk);
569 mono_win32_compat_CopyMemory (gpointer dest, gconstpointer source, gsize length);
572 mono_win32_compat_FillMemory (gpointer dest, gsize length, guchar fill);
575 mono_win32_compat_MoveMemory (gpointer dest, gconstpointer source, gsize length);
578 mono_win32_compat_ZeroMemory (gpointer dest, gsize length);
581 mono_marshal_find_nonzero_bit_offset (guint8 *buf, int len, int *byte_offset, guint8 *bitmask) MONO_LLVM_INTERNAL;
584 mono_signature_no_pinvoke (MonoMethod *method);
586 /* Called from cominterop.c/remoting.c */
589 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);
592 mono_marshal_emit_managed_wrapper (MonoMethodBuilder *mb, MonoMethodSignature *invoke_sig, MonoMarshalSpec **mspecs, EmitMarshalContext* m, MonoMethod *method, uint32_t target_handle);
595 mono_marshal_get_cache (GHashTable **var, GHashFunc hash_func, GCompareFunc equal_func);
598 mono_marshal_find_in_cache (GHashTable *cache, gpointer key);
601 mono_mb_create_and_cache (GHashTable *cache, gpointer key,
602 MonoMethodBuilder *mb, MonoMethodSignature *sig,
605 mono_marshal_emit_thread_interrupt_checkpoint (MonoMethodBuilder *mb);
608 mono_marshal_emit_thread_force_interrupt_checkpoint (MonoMethodBuilder *mb);
611 mono_marshal_use_aot_wrappers (gboolean use);
614 mono_marshal_xdomain_copy_value (MonoObject *val, MonoError *error);
617 ves_icall_mono_marshal_xdomain_copy_value (MonoObject *val);
620 mono_mb_emit_save_args (MonoMethodBuilder *mb, MonoMethodSignature *sig, gboolean save_this);
623 mono_mb_emit_restore_result (MonoMethodBuilder *mb, MonoType *return_type);
626 mono_mb_create (MonoMethodBuilder *mb, MonoMethodSignature *sig,
627 int max_stack, WrapperInfo *info);
630 mono_mb_create_and_cache_full (GHashTable *cache, gpointer key,
631 MonoMethodBuilder *mb, MonoMethodSignature *sig,
632 int max_stack, WrapperInfo *info, gboolean *out_found);
634 typedef void (*MonoFtnPtrEHCallback) (guint32 gchandle);
637 mono_install_ftnptr_eh_callback (MonoFtnPtrEHCallback callback);
641 #endif /* __MONO_MARSHAL_H__ */