1 /* $OpenBSD: varargs.h,v 1.2 2004/01/03 14:55:34 espie Exp $ */
2 /*
3 * Copyright (c) 2003, 2004 Marc espie <espie@openbsd.org>
4 *
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
18 #ifndef _VARARGS_H_
19 #define _VARARGS_H_
20
21 #if defined(__GNUC__) && __GNUC__ >= 3
22 /* These macros implement traditional (non-ANSI) varargs
23 for GNU C. */
24
25 #define va_alist __builtin_va_alist
26
27 #define __va_ellipsis ...
28
29 /* ??? We don't process attributes correctly in K&R argument context. */
30 typedef int __builtin_va_alist_t __attribute__((__mode__(__word__)));
31
32 /* ??? It would be nice to get rid of the ellipsis here. It causes
33 current_function_varargs to be set in cc1. */
34 #define va_dcl __builtin_va_alist_t __builtin_va_alist; ...
35
36 /* Define __gnuc_va_list, just as in stdarg.h. */
37
38 #ifndef __GNUC_VA_LIST
39 #define __GNUC_VA_LIST
40 typedef __builtin_va_list __gnuc_va_list;
41 #endif
42
43 #define va_start(v) __builtin_varargs_start((v))
44 #define va_end __builtin_va_end
45 #define va_arg __builtin_va_arg
46 #define __va_copy(d,s) __builtin_va_copy((d),(s))
47
48 /* Define va_list from __gnuc_va_list. */
49
50 typedef __gnuc_va_list va_list;
51
52 #else
53 #include <machine/varargs.h>
54 #endif
55
56 #endif /* _VARARGS_H_ */