NetBSD-5.0.2/sys/arch/mips/include/stdarg.h

/*	$NetBSD: stdarg.h,v 1.28 2008/06/21 00:56:39 gmcgarry Exp $	*/

/*-
 * Copyright (c) 1992, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * 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.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * 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	8.1 (Berkeley) 6/10/93
 */

#ifndef _MIPS_STDARG_H_
#define	_MIPS_STDARG_H_

#include <machine/ansi.h>
#include <sys/featuretest.h>

typedef _BSD_VA_LIST_	va_list;

#ifdef __lint__

#define va_start(ap, last)	((ap) = *(va_list *)0)
#define va_arg(ap, type)	(*(type *)(void *)&(ap))
#define va_end(ap)
#define __va_copy(dest, src)	((dest) = (src))

#elif __GNUC_PREREQ__(3, 0)

#define va_start(ap, last)	__builtin_stdarg_start((ap), last)
#define va_arg(ap, type)	__builtin_va_arg((ap), type)
#define va_end(ap)		__builtin_va_end((ap))
#define __va_copy(dest, src)	__builtin_va_copy((dest), (src))

#elif defined(__PCC__)

#define va_start(ap, last)	__builtin_stdarg_start((ap), last)
#define va_arg(ap, type)	__builtin_va_arg((ap), type)
#define va_end(ap)		__builtin_va_end((ap))
#define __va_copy(dest, src)	__builtin_va_copy((dest), (src))

#else

#if defined(_MIPS_BSD_API) && \
    !((_MIPS_BSD_API == _MIPS_BSD_API_LP32) || \
      (_MIPS_BSD_API == _MIPS_BSD_API_LP32_64CLEAN))
#error stdargs.h does not work with 64 bit ABIs
#endif

#define	va_start(ap, last) \
	((ap) = (va_list)__builtin_next_arg(last))

#if BYTE_ORDER == LITTLE_ENDIAN
#define	va_arg(ap, T)							\
	(((T *)(							\
	    (ap) += (/*CONSTCOND*/ __alignof__(T) <= sizeof(int)	\
		? sizeof(int) : ((long)(ap) & 4) + sizeof(T)),		\
	    (ap) - (/*CONSTCOND*/ __alignof__(T) <= sizeof(int)		\
		? sizeof(int) : sizeof(T))				\
 	))[0])
#else
#define	va_arg(ap, T)							\
	(((T *)(							\
	    (ap) += (/*CONSTCOND*/ __alignof__(T) <= sizeof(int)	\
		? sizeof(int) : ((long)(ap) & 4) + sizeof(T))		\
 	))[-1])
#endif

#define	va_end(ap)

#define	__va_copy(dest, src)	((dest) = (src))

#endif

#if !defined(_ANSI_SOURCE) &&						\
    (defined(_ISOC99_SOURCE) || (__STDC_VERSION__ - 0) >= 199901L ||	\
     defined(_NETBSD_SOURCE))
#define	va_copy(dest, src)	__va_copy((dest), (src))
#endif

#endif /* !_MIPS_STDARG_H_ */