freebsd-dev/sys/sparc64/include/stdarg.h
Alexander Kabaev d9cb97ff9d Use __builtin_va_start instead of __builtin_stdarg_start. GCC4 obsoletes
the former and  __builtin_va_start was present in all GCC version 3.1 and
later.
2006-09-21 01:37:02 +00:00

102 lines
3.5 KiB
C

/*-
* Copyright (c) 2002 David E. O'Brien. All rights reserved.
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Lawrence Berkeley Laboratory.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)stdarg.h 8.2 (Berkeley) 9/27/93
* $NetBSD: stdarg.h,v 1.11 2000/07/23 21:36:56 mycroft Exp $
* $FreeBSD$
*/
#ifndef _MACHINE_STDARG_H_
#define _MACHINE_STDARG_H_
#include <sys/cdefs.h>
#include <sys/_types.h>
#ifndef _VA_LIST_DECLARED
#define _VA_LIST_DECLARED
typedef __va_list va_list;
#endif
#ifdef __GNUCLIKE_BUILTIN_STDARG
#define va_start(ap, last) \
__builtin_va_start((ap), (last))
#define va_arg(ap, type) \
__builtin_va_arg((ap), type)
#if __ISO_C_VISIBLE >= 1999
#define va_copy(dest, src) \
__builtin_va_copy((dest), (src))
#endif
#define va_end(ap) \
__builtin_va_end(ap)
#else /* ! __GNUCLIKE_BUILTIN_STDARG */
#if !defined(__GNUCLIKE_BUILTIN_NEXT_ARG) && !defined(lint)
#error no support for your compiler
#endif
#define va_start(ap, last) \
(__builtin_next_arg(last), (ap) = (va_list)__builtin_saveregs())
#define va_end(ap)
#define __va_arg8(ap, type) \
(*(type *)(void *)((ap) += 8, (ap) - 8))
#define __va_arg16(ap, type) \
(*(type *)(void *)((ap) = (va_list)(((unsigned long)(ap) + 31) & -16),\
(ap) - 16))
#define __va_int(ap, type) \
(*(type *)(void *)((ap) += 8, (ap) - sizeof(type)))
#define __REAL_TYPE_CLASS 8
#define __RECORD_TYPE_CLASS 12
#define va_arg(ap, type) \
(__builtin_classify_type(*(type *)0) == __REAL_TYPE_CLASS ? \
(__alignof__(type) == 16 ? __va_arg16(ap, type) : \
__va_arg8(ap, type)) : \
(__builtin_classify_type(*(type *)0) < __RECORD_TYPE_CLASS ? \
__va_int(ap, type) : \
(sizeof(type) <= 8 ? __va_arg8(ap, type) : \
(sizeof(type) <= 16 ? __va_arg16(ap, type) : \
*__va_arg8(ap, type *)))))
#endif /* __GNUCLIKE_BUILTIN_STDARG */
#endif /* !_MACHINE_STDARG_H_ */