stdarg.h revision 80709 
1/*
2 * Copyright (c) 1992, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * This software was developed by the Computer Systems Engineering group
6 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
7 * contributed to Berkeley.
8 *
9 * All advertising materials mentioning features or use of this software
10 * must display the following acknowledgement:
11 *	This product includes software developed by the University of
12 *	California, Lawrence Berkeley Laboratory.
13 *
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions
16 * are met:
17 * 1. Redistributions of source code must retain the above copyright
18 *    notice, this list of conditions and the following disclaimer.
19 * 2. Redistributions in binary form must reproduce the above copyright
20 *    notice, this list of conditions and the following disclaimer in the
21 *    documentation and/or other materials provided with the distribution.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 *
35 *	from: @(#)stdarg.h	8.2 (Berkeley) 9/27/93
36 *	from: NetBSD: stdarg.h,v 1.11 2000/07/23 21:36:56 mycroft Exp
37 * $FreeBSD: head/sys/sparc64/include/stdarg.h 80709 2001-07-31 06:05:05Z jake $
38 */
39
40#ifndef _MACHINE_STDARG_H_
41#define	_MACHINE_STDARG_H_
42
43#include <machine/ansi.h>
44
45typedef _BSD_VA_LIST_	va_list;
46
47#define	va_start(ap, last) \
48	(__builtin_next_arg(last), (ap) = (va_list)__builtin_saveregs())
49
50#define va_end(ap)
51
52#define	__va_arg8(ap, type) \
53	(*(type *)(void *)((ap) += 8, (ap) - 8))
54#define	__va_arg16(ap, type) \
55	(*(type *)(void *)((ap) = (va_list)(((unsigned long)(ap) + 31) & -16),\
56			   (ap) - 16))
57#define	__va_int(ap, type) \
58	(*(type *)(void *)((ap) += 8, (ap) - sizeof(type)))
59
60#define	__REAL_TYPE_CLASS	8
61#define	__RECORD_TYPE_CLASS	12
62#define va_arg(ap, type) \
63	(__builtin_classify_type(*(type *)0) == __REAL_TYPE_CLASS ?	\
64	 (__alignof__(type) == 16 ? __va_arg16(ap, type) :		\
65	  __va_arg8(ap, type)) :					\
66	 (__builtin_classify_type(*(type *)0) < __RECORD_TYPE_CLASS ?	\
67	  __va_int(ap, type) :						\
68	  (sizeof(type) <= 8 ? __va_arg8(ap, type) :			\
69	   (sizeof(type) <= 16 ? __va_arg16(ap, type) :			\
70	    *__va_arg8(ap, type *)))))
71
72#endif /* !_MACHINE_STDARG_H_ */
73