summaryrefslogtreecommitdiff
path: root/libgo/runtime/go-unsafe-pointer.c
diff options
context:
space:
mode:
Diffstat (limited to 'libgo/runtime/go-unsafe-pointer.c')
-rw-r--r--libgo/runtime/go-unsafe-pointer.c97
1 files changed, 97 insertions, 0 deletions
diff --git a/libgo/runtime/go-unsafe-pointer.c b/libgo/runtime/go-unsafe-pointer.c
new file mode 100644
index 0000000000..804360f8a8
--- /dev/null
+++ b/libgo/runtime/go-unsafe-pointer.c
@@ -0,0 +1,97 @@
+/* go-unsafe-pointer.c -- unsafe.Pointer type descriptor for Go.
+
+ Copyright 2009 The Go Authors. All rights reserved.
+ Use of this source code is governed by a BSD-style
+ license that can be found in the LICENSE file. */
+
+#include <stddef.h>
+
+#include "go-string.h"
+#include "go-type.h"
+
+/* This file provides the type descriptor for the unsafe.Pointer type.
+ The unsafe package is defined by the compiler itself, which means
+ that there is no package to compile to define the type
+ descriptor. */
+
+extern const struct __go_type_descriptor unsafe_Pointer
+ asm ("__go_tdn_libgo_unsafe.unsafe.Pointer");
+
+/* Used to determine the field alignment. */
+struct field_align
+{
+ char c;
+ void *p;
+};
+
+/* The reflection string. */
+#define REFLECTION "unsafe.Pointer"
+static const struct __go_string reflection_string =
+{
+ (const unsigned char *) REFLECTION,
+ sizeof REFLECTION - 1
+};
+
+const struct __go_type_descriptor unsafe_Pointer =
+{
+ /* __code */
+ GO_UNSAFE_POINTER,
+ /* __align */
+ __alignof (void *),
+ /* __field_align */
+ offsetof (struct field_align, p) - 1,
+ /* __size */
+ sizeof (void *),
+ /* __hash */
+ 78501163U,
+ /* __hashfn */
+ __go_type_hash_identity,
+ /* __equalfn */
+ __go_type_equal_identity,
+ /* __reflection */
+ &reflection_string,
+ /* __uncommon */
+ NULL
+};
+
+/* We also need the type descriptor for the pointer to unsafe.Pointer,
+ since any package which refers to that type descriptor will expect
+ it to be defined elsewhere. */
+
+extern const struct __go_ptr_type pointer_unsafe_Pointer
+ asm ("__go_td_pN27_libgo_unsafe.unsafe.Pointer");
+
+/* The reflection string. */
+#define PREFLECTION "*unsafe.Pointer"
+static const struct __go_string preflection_string =
+{
+ (const unsigned char *) PREFLECTION,
+ sizeof PREFLECTION - 1,
+};
+
+const struct __go_ptr_type pointer_unsafe_Pointer =
+{
+ /* __common */
+ {
+ /* __code */
+ GO_PTR,
+ /* __align */
+ __alignof (void *),
+ /* __field_align */
+ offsetof (struct field_align, p) - 1,
+ /* __size */
+ sizeof (void *),
+ /* __hash */
+ 1256018616U,
+ /* __hashfn */
+ __go_type_hash_identity,
+ /* __equalfn */
+ __go_type_equal_identity,
+ /* __reflection */
+ &preflection_string,
+ /* __uncommon */
+ NULL
+ },
+ /* __element_type */
+ &unsafe_Pointer
+};