Annotation of sys/sys/varargs.h, Revision 1.1.1.1
1.1 nbrk 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_ */
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