2 * Copyright (c) 2002 David E. O'Brien. All rights reserved.
3 * Copyright (c) 1992, 1993
4 * The Regents of the University of California. All rights reserved.
6 * This software was developed by the Computer Systems Engineering group
7 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
8 * contributed to Berkeley.
10 * All advertising materials mentioning features or use of this software
11 * must display the following acknowledgement:
12 * This product includes software developed by the University of
13 * California, Lawrence Berkeley Laboratory.
15 * Redistribution and use in source and binary forms, with or without
16 * modification, are permitted provided that the following conditions
18 * 1. Redistributions of source code must retain the above copyright
19 * notice, this list of conditions and the following disclaimer.
20 * 2. Redistributions in binary form must reproduce the above copyright
21 * notice, this list of conditions and the following disclaimer in the
22 * documentation and/or other materials provided with the distribution.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * @(#)stdarg.h 8.2 (Berkeley) 9/27/93
37 * $NetBSD: stdarg.h,v 1.11 2000/07/23 21:36:56 mycroft Exp $
41 #ifndef _MACHINE_STDARG_H_
42 #define _MACHINE_STDARG_H_
44 #include <sys/cdefs.h>
45 #include <sys/_types.h>
47 #ifndef _VA_LIST_DECLARED
48 #define _VA_LIST_DECLARED
49 typedef __va_list va_list;
52 #ifdef __GNUCLIKE_BUILTIN_STDARG
54 #define va_start(ap, last) \
55 __builtin_va_start((ap), (last))
57 #define va_arg(ap, type) \
58 __builtin_va_arg((ap), type)
60 #if __ISO_C_VISIBLE >= 1999
61 #define va_copy(dest, src) \
62 __builtin_va_copy((dest), (src))
68 #else /* ! __GNUCLIKE_BUILTIN_STDARG */
70 #if !defined(__GNUCLIKE_BUILTIN_NEXT_ARG) && !defined(lint)
71 #error no support for your compiler
74 #define va_start(ap, last) \
75 (__builtin_next_arg(last), (ap) = (va_list)__builtin_saveregs())
79 #define __va_arg8(ap, type) \
80 (*(type *)(void *)((ap) += 8, (ap) - 8))
81 #define __va_arg16(ap, type) \
82 (*(type *)(void *)((ap) = (va_list)(((unsigned long)(ap) + 31) & -16),\
84 #define __va_int(ap, type) \
85 (*(type *)(void *)((ap) += 8, (ap) - sizeof(type)))
87 #define __REAL_TYPE_CLASS 8
88 #define __RECORD_TYPE_CLASS 12
89 #define va_arg(ap, type) \
90 (__builtin_classify_type(*(type *)0) == __REAL_TYPE_CLASS ? \
91 (__alignof__(type) == 16 ? __va_arg16(ap, type) : \
92 __va_arg8(ap, type)) : \
93 (__builtin_classify_type(*(type *)0) < __RECORD_TYPE_CLASS ? \
94 __va_int(ap, type) : \
95 (sizeof(type) <= 8 ? __va_arg8(ap, type) : \
96 (sizeof(type) <= 16 ? __va_arg16(ap, type) : \
97 *__va_arg8(ap, type *)))))
99 #endif /* __GNUCLIKE_BUILTIN_STDARG */
101 #endif /* !_MACHINE_STDARG_H_ */