2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 2002 David E. O'Brien. All rights reserved.
5 * Copyright (c) 1991, 1993
6 * The Regents of the University of California. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 4. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * @(#)stdarg.h 8.1 (Berkeley) 6/10/93
36 #ifndef _MACHINE_STDARG_H_
37 #define _MACHINE_STDARG_H_
39 #include <sys/cdefs.h>
40 #include <sys/_types.h>
42 #ifndef _VA_LIST_DECLARED
43 #define _VA_LIST_DECLARED
44 typedef __va_list va_list;
47 #ifdef __GNUCLIKE_BUILTIN_STDARG
49 #define va_start(ap, last) \
50 __builtin_va_start((ap), (last))
52 #define va_arg(ap, type) \
53 __builtin_va_arg((ap), type)
55 #if __ISO_C_VISIBLE >= 1999
56 #define va_copy(dest, src) \
57 __builtin_va_copy((dest), (src))
63 #else /* !__GNUCLIKE_BUILTIN_STDARG */
65 #define __va_size(type) \
66 (((sizeof(type) + sizeof(int) - 1) / sizeof(int)) * sizeof(int))
68 #ifdef __GNUCLIKE_BUILTIN_NEXT_ARG
69 #define va_start(ap, last) \
70 ((ap) = (va_list)__builtin_next_arg(last))
71 #else /* !__GNUCLIKE_BUILTIN_NEXT_ARG */
72 #define va_start(ap, last) \
73 ((ap) = (va_list)&(last) + __va_size(last))
74 #endif /* __GNUCLIKE_BUILTIN_NEXT_ARG */
76 #define va_arg(ap, type) \
77 (*(type *)((ap) += __va_size(type), (ap) - __va_size(type)))
81 #endif /* __GNUCLIKE_BUILTIN_STDARG */
83 #endif /* !_MACHINE_STDARG_H_ */