76 lines
3.1 KiB
C
76 lines
3.1 KiB
C
/* $NetBSD: varargs.h,v 1.2 1995/02/16 03:08:11 cgd Exp $ */
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/*-
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* Copyright (c) 1990, 1993
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* The Regents of the University of California. All rights reserved.
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* (c) UNIX System Laboratories, Inc.
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* All or some portions of this file are derived from material licensed
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* to the University of California by American Telephone and Telegraph
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* Co. or Unix System Laboratories, Inc. and are reproduced herein with
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* the permission of UNIX System Laboratories, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)varargs.h 8.2 (Berkeley) 3/22/94
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*/
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#ifndef _VARARGS_H_
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#define _VARARGS_H_
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#include <machine/ansi.h>
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typedef _BSD_VA_LIST_ va_list;
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/*
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* Note that these macros are significantly different than the 'standard'
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* ones. On the alpha, all arguments are passed as 64 bit quantities.
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*/
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#define va_alist __builtin_va_alist
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#define va_dcl va_list __builtin_va_alist; ...
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#define va_start(a) \
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((a) = *(va_list *)__builtin_saveregs())
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#define __va_size(type) \
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(((sizeof(type) + sizeof(long) - 1) / sizeof(long)) * sizeof(long))
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#define __REAL_TYPE_CLASS 8
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#define __va_arg_offset(a, type) \
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((__builtin_classify_type(*(type *)0) == __REAL_TYPE_CLASS && \
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(a).offset <= (6 * 8) ? -(6 * 8) : 0) - __va_size(type))
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#define va_arg(a, type) \
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(*((a).offset += __va_size(type), \
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(type *)((a).base + (a).offset + __va_arg_offset(a, type))))
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#define va_end(a) ((void) 0)
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#endif /* !_VARARGS_H_ */
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