62 lines
2.1 KiB
C
62 lines
2.1 KiB
C
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/* $OpenBSD: endian.h,v 1.5 2011/03/12 22:27:48 guenther Exp $ */
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/*-
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* Copyright (c) 1997 Niklas Hallqvist. 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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*
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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 OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _MACHINE_ENDIAN_H_
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#define _MACHINE_ENDIAN_H_
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#ifdef __GNUC__
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#define __swap32md(x) __statement({ \
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u_int32_t __swap32md_x = (x); \
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\
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__asm ("bswap %0" : "+r" (__swap32md_x)); \
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__swap32md_x; \
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})
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#define __swap64md(x) __statement({ \
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u_int64_t __swap64md_x = (x); \
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\
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__asm ("bswapq %0" : "+r" (__swap64md_x)); \
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__swap64md_x; \
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})
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#define __swap16md(x) __statement({ \
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u_int16_t __swap16md_x = (x); \
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\
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__asm ("rorw $8, %w0" : "+r" (__swap16md_x)); \
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__swap16md_x; \
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})
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/* Tell sys/endian.h we have MD variants of the swap macros. */
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#define MD_SWAP
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#endif /* __GNUC__ */
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#define _BYTE_ORDER _LITTLE_ENDIAN
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#include <sys/endian.h>
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#endif /* _MACHINE_ENDIAN_H_ */
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