diff options
Diffstat (limited to 'libgo/runtime/go-unsafe-pointer.c')
-rw-r--r-- | libgo/runtime/go-unsafe-pointer.c | 97 |
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 +}; |