c88ae1f9ee
Put the minimum to define the required inline assembler or C into the MD files. NB: there may be some fallout from this!
62 lines
2.2 KiB
C
62 lines
2.2 KiB
C
/* $NetBSD: byte_swap.h,v 1.8 2006/01/30 22:46:36 dsl Exp $ */
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/*
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* Copyright (c) 1987, 1991 Regents of the University of California.
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* 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 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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* @(#)endian.h 7.8 (Berkeley) 4/3/91
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*/
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#ifndef _PC532_BYTE_SWAP_H_
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#define _PC532_BYTE_SWAP_H_
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#ifdef __GNUC__
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#include <sys/types.h>
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__BEGIN_DECLS
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#define __BYTE_SWAP_U32_VARIABLE __byte_swap_u32_variable
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static __inline uint32_t
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__byte_swap_u32_variable(uint32_t x)
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{
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__asm ("rotw 8,%1; rotd 16,%1; rotw 8,%1" : "=r" (x) : "0" (x));
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return (x);
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}
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#define __BYTE_SWAP_U16_VARIABLE __byte_swap_u16_variable
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static __inline uint16_t
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__byte_swap_u16_variable(uint16_t x)
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{
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__asm ("rotw 8,%1" : "=r" (x) : "0" (x));
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return (x);
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}
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__END_DECLS
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#endif
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#endif /* _PC532_BYTE_SWAP_H_ */
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