-/*
- * marshal.c: Routines for marshaling complex types in P/Invoke methods.
+/**
+ * \file
+ * Routines for marshaling complex types in P/Invoke methods.
*
* Author:
* Paolo Molaro (lupus@ximian.com)
register_icall (mono_threads_detach_coop, "mono_threads_detach_coop", "void ptr ptr", TRUE);
register_icall (mono_icall_start, "mono_icall_start", "ptr ptr ptr", TRUE);
register_icall (mono_icall_end, "mono_icall_end", "void ptr ptr ptr", TRUE);
- register_icall (mono_handle_new, "mono_handle_new", "ptr ptr", TRUE);
+ register_icall (mono_handle_new_full, "mono_handle_new_full", "ptr ptr bool", TRUE);
mono_cominterop_init ();
mono_remoting_init ();
/**
* mono_string_builder_to_utf8:
- * @sb: the string builder
+ * \param sb the string builder
*
- * Converts to utf8 the contents of the MonoStringBuilder.
+ * Converts to utf8 the contents of the \c MonoStringBuilder .
*
- * Returns: a utf8 string with the contents of the StringBuilder.
+ * \returns a utf8 string with the contents of the \c StringBuilder .
*
* The return value must be released with mono_marshal_free.
*
/**
* mono_string_builder_to_utf16:
- * @sb: the string builder
+ * \param sb the string builder
*
- * Converts to utf16 the contents of the MonoStringBuilder.
+ * Converts to utf16 the contents of the \c MonoStringBuilder .
*
- * Returns: a utf16 string with the contents of the StringBuilder.
+ * Returns: a utf16 string with the contents of the \c StringBuilder .
*
* The return value must be released with mono_marshal_free.
*
/**
* mono_string_to_byvalstr:
- * @dst: Where to store the null-terminated utf8 decoded string.
- * @src: the MonoString to copy.
- * @size: the maximum number of bytes to copy.
+ * \param dst Where to store the null-terminated utf8 decoded string.
+ * \param src the \c MonoString to copy.
+ * \param size the maximum number of bytes to copy.
*
- * Copies the MonoString pointed to by @src as a utf8 string
- * into @dst, it copies at most @size bytes into the destination.
+ * Copies the \c MonoString pointed to by \p src as a utf8 string
+ * into \p dst, it copies at most \p size bytes into the destination.
*/
void
mono_string_to_byvalstr (gpointer dst, MonoString *src, int size)
/**
* mono_string_to_byvalwstr:
- * @dst: Where to store the null-terminated utf16 decoded string.
- * @src: the MonoString to copy.
- * @size: the maximum number of wide characters to copy (each consumes 2 bytes)
+ * \param dst Where to store the null-terminated utf16 decoded string.
+ * \param src the \c MonoString to copy.
+ * \param size the maximum number of wide characters to copy (each consumes 2 bytes)
*
- * Copies the MonoString pointed to by @src as a utf16 string into
- * @dst, it copies at most @size bytes into the destination (including
+ * Copies the \c MonoString pointed to by \p src as a utf16 string into
+ * \p dst, it copies at most \p size bytes into the destination (including
* a terminating 16-bit zero terminator).
*/
void
MonoMethodSignature *csig;
MonoExceptionClause *clause;
MonoMethodBuilder *mb;
- int pos, posna;
+ int pos;
char *name;
WrapperInfo *info;
mono_mb_emit_byte (mb, CEE_LDNULL);
mono_mb_emit_stloc (mb, 0);
- /* Check for the abort exception */
- mono_mb_emit_ldloc (mb, 1);
- mono_mb_emit_op (mb, CEE_ISINST, mono_defaults.threadabortexception_class);
- posna = mono_mb_emit_short_branch (mb, CEE_BRFALSE_S);
-
- /* Delay the abort exception */
- mono_mb_emit_icall (mb, ves_icall_System_Threading_Thread_ResetAbort);
-
- mono_mb_patch_short_branch (mb, posna);
mono_mb_emit_branch (mb, CEE_LEAVE);
clause->handler_len = mono_mb_get_pos (mb) - clause->handler_offset;
}
}
+/* How the arguments of an icall should be wrapped */
+typedef enum {
+ /* Don't wrap at all, pass the argument as is */
+ ICALL_HANDLES_WRAP_NONE,
+ /* Wrap the argument in an object handle, pass the handle to the icall */
+ ICALL_HANDLES_WRAP_OBJ,
+ /* Wrap the argument in an object handle, pass the handle to the icall,
+ write the value out from the handle when the icall returns */
+ ICALL_HANDLES_WRAP_OBJ_INOUT,
+ /* Wrap the argument (a valuetype reference) in a handle to pin its enclosing object,
+ but pass the raw reference to the icall */
+ ICALL_HANDLES_WRAP_VALUETYPE_REF,
+} IcallHandlesWrap;
+
+typedef struct {
+ IcallHandlesWrap wrap;
+ /* if wrap is NONE or OBJ or VALUETYPE_REF, this is not meaningful.
+ if wrap is OBJ_INOUT it's the local var that holds the MonoObjectHandle.
+ */
+ int handle;
+} IcallHandlesLocal;
+
+/*
+ * Describes how to wrap the given parameter.
+ *
+ */
+static IcallHandlesWrap
+signature_param_uses_handles (MonoMethodSignature *sig, int param)
+{
+ if (MONO_TYPE_IS_REFERENCE (sig->params [param])) {
+ return mono_signature_param_is_out (sig, param) ? ICALL_HANDLES_WRAP_OBJ_INOUT : ICALL_HANDLES_WRAP_OBJ;
+ } else if (mono_type_is_byref (sig->params [param]))
+ return ICALL_HANDLES_WRAP_VALUETYPE_REF;
+ else
+ return ICALL_HANDLES_WRAP_NONE;
+}
+
+
#ifndef DISABLE_JIT
/**
* mono_marshal_emit_native_wrapper:
- * @image: the image to use for looking up custom marshallers
- * @sig: The signature of the native function
- * @piinfo: Marshalling information
- * @mspecs: Marshalling information
- * @aot: whenever the created method will be compiled by the AOT compiler
- * @method: if non-NULL, the pinvoke method to call
- * @check_exceptions: Whenever to check for pending exceptions after the native call
- * @func_param: the function to call is passed as a boxed IntPtr as the first parameter
+ * \param image the image to use for looking up custom marshallers
+ * \param sig The signature of the native function
+ * \param piinfo Marshalling information
+ * \param mspecs Marshalling information
+ * \param aot whenever the created method will be compiled by the AOT compiler
+ * \param method if non-NULL, the pinvoke method to call
+ * \param check_exceptions Whenever to check for pending exceptions after the native call
+ * \param func_param the function to call is passed as a boxed IntPtr as the first parameter
*
- * generates IL code for the pinvoke wrapper, the generated code calls @func.
+ * generates IL code for the pinvoke wrapper, the generated code calls \p func .
*/
void
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)
/**
* mono_marshal_get_native_wrapper:
- * @method: The MonoMethod to wrap.
- * @check_exceptions: Whenever to check for pending exceptions
+ * \param method The MonoMethod to wrap.
+ * \param check_exceptions Whenever to check for pending exceptions
*
* generates IL code for the pinvoke wrapper (the generated method
* calls the unmanaged code in piinfo->addr)
int thread_info_var = -1, stack_mark_var = -1, error_var = -1;
MonoMethodSignature *call_sig = csig;
gboolean uses_handles = FALSE;
- gboolean has_outarg_handles = FALSE;
- int *outarg_handle = NULL;
+ gboolean save_handles_to_locals = FALSE;
+ IcallHandlesLocal *handles_locals = NULL;
(void) mono_lookup_internal_call_full (method, &uses_handles);
if (uses_handles) {
MonoMethodSignature *ret;
- /* Add a MonoError argument */
+ /* Add a MonoError argument and figure out which args need to be wrapped in handles */
// FIXME: The stuff from mono_metadata_signature_dup_internal_with_padding ()
ret = mono_metadata_signature_alloc (method->klass->image, csig->param_count + 1);
ret->param_count = csig->param_count + 1;
ret->ret = csig->ret;
+
+ handles_locals = g_new0 (IcallHandlesLocal, csig->param_count);
for (int i = 0; i < csig->param_count; ++i) {
- if (MONO_TYPE_IS_REFERENCE (csig->params[i])) {
+ IcallHandlesWrap w = signature_param_uses_handles (csig, i);
+ handles_locals [i].wrap = w;
+ switch (w) {
+ case ICALL_HANDLES_WRAP_OBJ:
+ case ICALL_HANDLES_WRAP_OBJ_INOUT:
ret->params [i] = mono_class_get_byref_type (mono_class_from_mono_type(csig->params[i]));
- if (mono_signature_param_is_out (csig, i)) {
- has_outarg_handles = TRUE;
- }
- } else
+ if (w == ICALL_HANDLES_WRAP_OBJ_INOUT)
+ save_handles_to_locals = TRUE;
+ break;
+ case ICALL_HANDLES_WRAP_NONE:
+ case ICALL_HANDLES_WRAP_VALUETYPE_REF:
ret->params [i] = csig->params [i];
+ break;
+ default:
+ g_assert_not_reached ();
+ }
}
+ /* Add MonoError* param */
ret->params [csig->param_count] = &mono_get_intptr_class ()->byval_arg;
ret->pinvoke = csig->pinvoke;
stack_mark_var = mono_mb_add_local (mb, &handle_stack_mark_class->byval_arg);
error_var = mono_mb_add_local (mb, &error_class->byval_arg);
- if (has_outarg_handles) {
- outarg_handle = g_new0 (int, sig->param_count);
-
+ if (save_handles_to_locals) {
/* add a local var to hold the handles for each out arg */
for (int i = 0; i < sig->param_count; ++i) {
- if (mono_signature_param_is_out (sig, i) && MONO_TYPE_IS_REFERENCE (sig->params[i])) {
- outarg_handle[i] = mono_mb_add_local (mb, sig->params[i]);
- } else if (outarg_handle != NULL)
- outarg_handle[i] = -1;
+ int j = i + sig->hasthis;
+ switch (handles_locals[j].wrap) {
+ case ICALL_HANDLES_WRAP_NONE:
+ case ICALL_HANDLES_WRAP_OBJ:
+ case ICALL_HANDLES_WRAP_VALUETYPE_REF:
+ handles_locals [j].handle = -1;
+ break;
+ case ICALL_HANDLES_WRAP_OBJ_INOUT:
+ handles_locals [j].handle = mono_mb_add_local (mb, sig->params [i]);
+ break;
+ default:
+ g_assert_not_reached ();
+ }
}
}
}
if (sig->hasthis) {
mono_mb_emit_byte (mb, CEE_LDARG_0);
- mono_mb_emit_icall (mb, mono_handle_new);
+ /* TODO support adding wrappers to non-static struct methods */
+ g_assert (!mono_class_is_valuetype(mono_method_get_class (method)));
+ mono_mb_emit_byte (mb, CEE_LDC_I4_0);
+ mono_mb_emit_icall (mb, mono_handle_new_full);
}
for (i = 0; i < sig->param_count; i++) {
- /* load each argument. object reference arguments get wrapped in handles */
-
- if (!MONO_TYPE_IS_REFERENCE (sig->params [i])) {
- mono_mb_emit_ldarg (mb, i + sig->hasthis);
- } else {
- if (outarg_handle && outarg_handle[i] != -1) {
- /* handleI = argI = mono_handle_new (NULL) */
- mono_mb_emit_byte (mb, CEE_LDNULL);
- mono_mb_emit_icall (mb, mono_handle_new);
- /* tmp = argI */
- mono_mb_emit_byte (mb, CEE_DUP);
- /* handleI = tmp */
- mono_mb_emit_stloc (mb, outarg_handle[i]);
- } else {
- /* argI = mono_handle_new (argI_raw) */
- mono_mb_emit_ldarg (mb, i + sig->hasthis);
- mono_mb_emit_icall (mb, mono_handle_new);
- }
+ /* load each argument. references into the managed heap get wrapped in handles */
+ int j = i + sig->hasthis;
+ switch (handles_locals[j].wrap) {
+ case ICALL_HANDLES_WRAP_NONE:
+ mono_mb_emit_ldarg (mb, j);
+ break;
+ case ICALL_HANDLES_WRAP_OBJ:
+ /* argI = mono_handle_new_full (argI_raw, FALSE) */
+ mono_mb_emit_ldarg (mb, j);
+ mono_mb_emit_byte (mb, CEE_LDC_I4_0);
+ mono_mb_emit_icall (mb, mono_handle_new_full);
+ break;
+ case ICALL_HANDLES_WRAP_OBJ_INOUT:
+ /* handleI = argI = mono_handle_new_full (NULL, FALSE) */
+ mono_mb_emit_byte (mb, CEE_LDNULL);
+ mono_mb_emit_byte (mb, CEE_LDC_I4_0);
+ mono_mb_emit_icall (mb, mono_handle_new_full);
+ /* tmp = argI */
+ mono_mb_emit_byte (mb, CEE_DUP);
+ /* handleI = tmp */
+ mono_mb_emit_stloc (mb, handles_locals[j].handle);
+ break;
+ case ICALL_HANDLES_WRAP_VALUETYPE_REF:
+ /* (void) mono_handle_new_full (argI, TRUE); argI */
+ mono_mb_emit_ldarg (mb, j);
+ mono_mb_emit_byte (mb, CEE_DUP);
+ mono_mb_emit_byte (mb, CEE_LDC_I4_1);
+ mono_mb_emit_icall (mb, mono_handle_new_full);
+ mono_mb_emit_byte (mb, CEE_POP);
+#if 0
+ fprintf (stderr, " Method %s.%s.%s has byref valuetype argument %d\n", method->klass->name_space, method->klass->name, method->name, i);
+#endif
+ break;
+ default:
+ g_assert_not_reached ();
}
}
mono_mb_emit_ldloc_addr (mb, error_var);
mono_mb_emit_byte (mb, CEE_LDIND_REF);
mono_mb_patch_branch (mb, pos);
}
- if (outarg_handle != NULL) {
+ if (save_handles_to_locals) {
for (i = 0; i < sig->param_count; i++) {
- if (outarg_handle[i] != -1) {
+ int j = i + sig->hasthis;
+ switch (handles_locals [j].wrap) {
+ case ICALL_HANDLES_WRAP_NONE:
+ case ICALL_HANDLES_WRAP_OBJ:
+ case ICALL_HANDLES_WRAP_VALUETYPE_REF:
+ break;
+ case ICALL_HANDLES_WRAP_OBJ_INOUT:
/* *argI_raw = MONO_HANDLE_RAW (handleI) */
/* argI_raw */
- mono_mb_emit_ldarg (mb, i + sig->hasthis);
+ mono_mb_emit_ldarg (mb, j);
/* handleI */
- mono_mb_emit_ldloc (mb, outarg_handle[i]);
+ mono_mb_emit_ldloc (mb, handles_locals [j].handle);
/* MONO_HANDLE_RAW(handleI) */
mono_mb_emit_ldflda (mb, MONO_HANDLE_PAYLOAD_OFFSET (MonoObject));
mono_mb_emit_byte (mb, CEE_LDIND_REF);
/* *argI_raw = MONO_HANDLE_RAW(handleI) */
mono_mb_emit_byte (mb, CEE_STIND_REF);
+ break;
+ default:
+ g_assert_not_reached ();
}
}
- g_free (outarg_handle);
- outarg_handle = NULL;
}
+ g_free (handles_locals);
+
mono_mb_emit_ldloc (mb, thread_info_var);
mono_mb_emit_ldloc_addr (mb, stack_mark_var);
mono_mb_emit_ldloc_addr (mb, error_var);
/**
* mono_marshal_get_native_func_wrapper:
- * @image: The image to use for memory allocation and for looking up custom marshallers.
- * @sig: The signature of the function
- * @func: The native function to wrap
+ * \param image The image to use for memory allocation and for looking up custom marshallers.
+ * \param sig The signature of the function
+ * \param func The native function to wrap
*
- * Returns a wrapper method around native functions, similar to the pinvoke
+ * \returns a wrapper method around native functions, similar to the pinvoke
* wrapper.
*/
MonoMethod *
/**
* mono_marshal_get_struct_to_ptr:
- * @klass:
+ * \param klass \c MonoClass
*
* generates IL code for StructureToPtr (object structure, IntPtr ptr, bool fDeleteOld)
*/
/**
* mono_marshal_get_ptr_to_struct:
- * @klass:
+ * \param klass \c MonoClass
*
* generates IL code for PtrToStructure (IntPtr src, object structure)
*/
/**
* mono_marshal_get_array_address:
- * @rank: rank of the array type
- * @elem_size: size in bytes of an element of an array.
+ * \param rank rank of the array type
+ * \param elem_size size in bytes of an element of an array.
*
* Returns a MonoMethod that implements the code to get the address
- * of an element in a multi-dimenasional array of @rank dimensions.
+ * of an element in a multi-dimenasional array of \p rank dimensions.
* The returned method takes an array as the first argument and then
- * @rank indexes for the @rank dimensions.
+ * \p rank indexes for the \p rank dimensions.
* If ELEM_SIZE is 0, read the array size from the array object.
*/
MonoMethod*
/**
* mono_class_native_size:
- * @klass: a class
- *
- * Returns: the native size of an object instance (when marshaled
+ * \param klass a class
+ * \returns the native size of an object instance (when marshaled
* to unmanaged code)
*/
gint32
projects / mono.git / blobdiff