stdarg.h revision 103526 
1/*
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.
5 *
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.
9 *
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.
14 *
15 * Redistribution and use in source and binary forms, with or without
16 * modification, are permitted provided that the following conditions
17 * are met:
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.
23 *
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
34 * SUCH DAMAGE.
35 *
36 *	@(#)stdarg.h	8.2 (Berkeley) 9/27/93
37 *	$NetBSD: stdarg.h,v 1.11 2000/07/23 21:36:56 mycroft Exp $
38 * $FreeBSD: head/sys/sparc64/include/stdarg.h 103526 2002-09-18 07:33:16Z mike $
39 */
40
41#ifndef _MACHINE_STDARG_H_
42#define	_MACHINE_STDARG_H_
43
44#include <sys/_types.h>
45
46typedef	__va_list	va_list;
47
48#if defined(__GNUC__) && (__GNUC__ == 2 && __GNUC_MINOR__ > 95 || __GNUC__ >= 3)
49
50#define	va_start(ap, last) \
51	__builtin_stdarg_start((ap), (last))
52
53#define	va_arg(ap, type) \
54	__builtin_va_arg((ap), type)
55
56#define	va_copy(dest, src) \
57	__builtin_va_copy((dest), (src))
58
59#define	va_end(ap) \
60	__builtin_va_end(ap)
61
62#else	/* ! __GNUC__ post GCC 2.95 */
63
64#define	va_start(ap, last) \
65	(__builtin_next_arg(last), (ap) = (va_list)__builtin_saveregs())
66
67#define va_end(ap)
68
69#define	__va_arg8(ap, type) \
70	(*(type *)(void *)((ap) += 8, (ap) - 8))
71#define	__va_arg16(ap, type) \
72	(*(type *)(void *)((ap) = (va_list)(((unsigned long)(ap) + 31) & -16),\
73			   (ap) - 16))
74#define	__va_int(ap, type) \
75	(*(type *)(void *)((ap) += 8, (ap) - sizeof(type)))
76
77#define	__REAL_TYPE_CLASS	8
78#define	__RECORD_TYPE_CLASS	12
79#define va_arg(ap, type) \
80	(__builtin_classify_type(*(type *)0) == __REAL_TYPE_CLASS ?	\
81	 (__alignof__(type) == 16 ? __va_arg16(ap, type) :		\
82	  __va_arg8(ap, type)) :					\
83	 (__builtin_classify_type(*(type *)0) < __RECORD_TYPE_CLASS ?	\
84	  __va_int(ap, type) :						\
85	  (sizeof(type) <= 8 ? __va_arg8(ap, type) :			\
86	   (sizeof(type) <= 16 ? __va_arg16(ap, type) :			\
87	    *__va_arg8(ap, type *)))))
88
89#endif /* __GNUC__ post GCC 2.95 */
90
91#endif /* !_MACHINE_STDARG_H_ */
92