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a5f50ef9e4
place. This moves the dependency on GCC's and other compiler's features into the central sys/cdefs.h file, while the individual source files can then refer to #ifdef __COMPILER_FEATURE_FOO where they by now used to refer to #if __GNUC__ > 3.1415 && __BARC__ <= 42. By now, GCC and ICC (the Intel compiler) have been actively tested on IA32 platforms by netchild. Extension to other compilers is supposed to be possible, of course. Submitted by: netchild Reviewed by: various developers on arch@, some time ago
93 lines
3.2 KiB
C
93 lines
3.2 KiB
C
/*-
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* Copyright (c) 2002 David E. O'Brien. All rights reserved.
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* Copyright (c) 1991, 1993
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* The Regents of the University of California. 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. 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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* @(#)stdarg.h 8.1 (Berkeley) 6/10/93
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* $NetBSD: stdarg.h,v 1.7 1997/04/06 08:47:44 cgd Exp $
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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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#ifdef __GNUCLIKE_BUILTIN_STDARG
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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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#if __ISO_C_VISIBLE >= 1999
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#define va_copy(dest, src) \
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__builtin_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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#else /* !__GNUCLIKE_BUILTIN_STDARG */
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#ifdef __lint__
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#define __builtin_saveregs() (0)
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#define __builtin_classify_type(t) (0)
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#endif
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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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(__builtin_next_arg(last), (ap) = *(va_list *)__builtin_saveregs(), (ap).__pad = 0)
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#define __REAL_TYPE_CLASS 8
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#define __va_arg_offset(ap, type) \
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((__builtin_classify_type(*(type *)0) == __REAL_TYPE_CLASS && \
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(ap).__offset <= (6 * 8) ? -(6 * 8) : 0) - __va_size(type))
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#define va_arg(ap, type) \
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(*(type *)((ap).__offset += __va_size(type), \
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(ap).__base + (ap).__offset + __va_arg_offset(ap, type)))
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#define va_end(ap) ((void)0)
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#endif /* __GNUCLIKE_BUILTIN_STDARG */
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#endif /* !_MACHINE_STDARG_H_ */
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