b2c06799a2
setting. Make va_copy be an alias if __ISO_C_VISIBLE >= 1999. Why? more than a few ports have an autoconf that looks for __va_copy because it is available on glibc. It is critical that we use it if at all possible on amd64. It generally isn't a problem for i386 and its ilk because autoconf driven code tends to fall back to an assignment.
73 lines
2.4 KiB
C
73 lines
2.4 KiB
C
/*-
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* Copyright (c) 2002 David E. O'Brien. All rights reserved.
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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. 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 AUTHOR 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 AUTHOR 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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* $FreeBSD$
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*/
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#ifndef _MACHINE_STDARG_H_
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#define _MACHINE_STDARG_H_
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#include <sys/cdefs.h>
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#include <sys/_types.h>
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#ifndef _VA_LIST_DECLARED
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#define _VA_LIST_DECLARED
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typedef __va_list va_list;
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#endif
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#if defined(__GNUC__)
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#define va_start(ap, last) \
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__builtin_stdarg_start((ap), (last))
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#define va_arg(ap, type) \
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__builtin_va_arg((ap), type)
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#define __va_copy(dest, src) \
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__builtin_va_copy((dest), (src))
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#if __ISO_C_VISIBLE >= 1999
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#define va_copy(dest, src) \
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__va_copy(dest, src)
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#endif
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#define va_end(ap) \
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__builtin_va_end(ap)
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#elif defined(lint)
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/* Provide a fake implementation for lint's benefit */
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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 va_start(ap, last) \
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((ap) = (va_list)&(last) + __va_size(last))
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#define va_arg(ap, type) \
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(*(type *)((ap) += __va_size(type), (ap) - __va_size(type)))
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#define va_end(ap)
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#endif
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#endif /* !_MACHINE_STDARG_H_ */
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