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0b058e3cbd
o Standardize on _MACHINE_STDARG_H_ to allow multiple header includes. o Restrict the definition of va_copy() to C99 environments.
148 lines
4.8 KiB
C
148 lines
4.8 KiB
C
/*-
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* Copyright (c) 2002 David E. O'Brien. All rights reserved.
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* Copyright (c) 2000 Tsubai Masanari. 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. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $NetBSD: stdarg.h,v 1.5 2000/02/27 17:50:21 tsubai 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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#if defined(__GNUC__) && (__GNUC__ == 2 && __GNUC_MINOR__ > 95 || __GNUC__ >= 3)
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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 /* ! __GNUC__ post GCC 2.95 */
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#ifdef __lint__
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#define va_start(ap, last) ((ap) = *(va_list *)0)
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#define va_arg(ap, type) (*(type *)(void *)&(ap))
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#else
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#if defined(__GNUC__) && (__GNUC__ > 2 || __GNUC__ == 2 && __GNUC_MINOR__ >= 95)
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#define va_start(ap, last) \
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(__builtin_next_arg(last), \
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__builtin_memcpy((void *)&(ap), __builtin_saveregs (), \
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sizeof(__gnuc_va_list)))
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#else
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#define va_start(ap, last) \
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(__builtin_next_arg(last), \
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(ap).__stack = __va_stack_args, \
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(ap).__base = __va_reg_args, \
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(ap).__gpr = __va_first_gpr, \
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(ap).__fpr = __va_first_fpr)
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#endif
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#define __va_first_gpr (__builtin_args_info(0))
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#define __va_first_fpr (__builtin_args_info(1) - 32 - 1)
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#define __va_stack_args \
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((char *)__builtin_saveregs() + \
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(__va_first_gpr >= 8 ? __va_first_gpr - 8 : 0) * sizeof(int))
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#define __va_reg_args \
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((char *)__builtin_frame_address(0) + __builtin_args_info(4))
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#define __INTEGER_TYPE_CLASS 1
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#define __REAL_TYPE_CLASS 8
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#define __RECORD_TYPE_CLASS 12
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#define __va_longlong(type) \
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(__builtin_classify_type(*(type *)0) == __INTEGER_TYPE_CLASS && \
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sizeof(type) == 8)
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#define __va_double(type) \
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(__builtin_classify_type(*(type *)0) == __REAL_TYPE_CLASS)
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#define __va_struct(type) \
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(__builtin_classify_type(*(type *)0) >= __RECORD_TYPE_CLASS)
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#define __va_size(type) \
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((sizeof(type) + sizeof(int) - 1) / sizeof(int) * sizeof(int))
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#define __va_savedgpr(ap, type) \
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((ap).__base + (ap).__gpr * sizeof(int) - sizeof(type))
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#define __va_savedfpr(ap, type) \
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((ap).__base + 8 * sizeof(int) + (ap).__fpr * sizeof(double) - \
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sizeof(type))
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#define __va_stack(ap, type) \
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((ap).__stack += __va_size(type) + \
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(__va_longlong(type) ? (int)(ap).__stack & 4 : 0), \
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(ap).__stack - sizeof(type))
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#define __va_gpr(ap, type) \
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((ap).__gpr += __va_size(type) / sizeof(int) + \
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(__va_longlong(type) ? (ap).__gpr & 1 : 0), \
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(ap).__gpr <= 8 ? __va_savedgpr(ap, type) : __va_stack(ap, type))
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#define __va_fpr(ap, type) \
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((ap).__fpr++, \
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(ap).__fpr <= 8 ? __va_savedfpr(ap, type) : __va_stack(ap, type))
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#define va_arg(ap, type) \
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(*(type *)(__va_struct(type) ? (*(void **)__va_gpr(ap, void *)) : \
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__va_double(type) ? __va_fpr(ap, type) : \
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__va_gpr(ap, type)))
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#endif /* __lint__ */
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#define va_end(ap)
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#if __ISO_C_VISIBLE >= 1999
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#if !defined(_ANSI_SOURCE) && \
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(!defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE) || \
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defined(_ISOC99_SOURCE) || (__STDC_VERSION__ - 0) >= 199901L)
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#define va_copy(dest, src) \
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((dest) = (src))
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#endif
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#endif
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#endif /* __GNUC__ post GCC 2.95 */
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#endif /* _MACHINE_STDARG_H_ */
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