Get rid off the wrappers around __va_copy(), they serve no real purpose.
[dragonfly.git] / sys / i386 / include / stdarg.h
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1/*-
2 * Copyright (c) 1991, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * @(#)stdarg.h 8.1 (Berkeley) 6/10/93
34 * $FreeBSD: src/sys/i386/include/stdarg.h,v 1.10 1999/08/28 00:44:26 peter Exp $
d9c1a42a 35 * $DragonFly: src/sys/i386/include/Attic/stdarg.h,v 1.6 2005/04/24 10:58:19 asmodai Exp $
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36 */
37
e2565a42 38#ifndef _MACHINE_STDARG_H_
85100692 39#define _MACHINE_STDARG_H_
984263bc 40
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41/*
42 * GNUC mess
43 */
44#if defined(__GNUC__) && (__GNUC__ == 2 && __GNUC_MINOR__ > 95 || __GNUC__ >= 3)
45typedef __builtin_va_list __va_list; /* internally known to gcc */
46#else
47typedef char * __va_list;
48#endif /* post GCC 2.95 */
49#if defined __GNUC__ && !defined(__GNUC_VA_LIST) && !defined(__NO_GNUC_VA_LIST)
50#define __GNUC_VA_LIST
51typedef __va_list __gnuc_va_list; /* compatibility w/GNU headers*/
52#endif
984263bc 53
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54/*
55 * Standard va types and macros
56 */
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57#define __va_size(type) \
58 (((sizeof(type) + sizeof(int) - 1) / sizeof(int)) * sizeof(int))
59
60#ifdef __GNUC__
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61
62#if __GNUC__ == 2
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63#define __va_start(ap, last) \
64 ((ap) = (__va_list)__builtin_next_arg(last))
b04d5053 65#define __va_arg(ap, type) \
984263bc 66 (*(type *)((ap) += __va_size(type), (ap) - __va_size(type)))
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67#define __va_copy(dest, src) \
68 ((void)((dest) = (src)))
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69#define __va_end(ap)
70#elif __GNUC__ >= 3
71#if __GNUC_MINOR__ >= 0 && __GNUC_MINOR__ <= 2
72#define __va_start(ap, last) \
73 __builtin_stdarg_start((ap), (last))
74#elif __GNUC__ == 3 && __GNUC_MINOR__ >= 3
75#define __va_start(ap, last) \
76 __builtin_va_start(ap, last)
77#endif
78#define __va_arg(ap, type) \
79 __builtin_va_arg((ap), type)
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80#define __va_copy(dest, src) \
81 __builtin_va_copy((dest), (src))
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82#define __va_end(ap) \
83 __builtin_va_end(ap)
84#endif
984263bc 85
b04d5053 86#else /* !__GNUC__ */
e2565a42 87
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88/* Provide a free-standing implementation */
89#define __va_start(ap, last) \
90 ((ap) = (__va_list)&(last) + __va_size(last))
91#define __va_arg(ap, type) \
92 (*(type *)((ap) += __va_size(type), (ap) - __va_size(type)))
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93/* This assumes a typical stack machine */
94#define __va_copy(dest, src) \
95 ((void)((dest) = (src)))
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96#define __va_end(ap)
97
98#endif /* __GNUC__ */
984263bc 99
b04d5053 100#endif /* !_MACHINE_STDARG_H_ */