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/* $OpenBSD: endian.h,v 1.19 2018/10/02 21:30:44 naddy Exp $ */
/*-
* Copyright (c) 1997 Niklas Hallqvist. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _MACHINE_ENDIAN_H_
#define _MACHINE_ENDIAN_H_
#ifndef __FROM_SYS__ENDIAN
#include <sys/_types.h>
#endif
static __inline __uint16_t
__swap16md(__uint16_t _x)
{
__asm ("rorw $8, %w0" : "+r" (_x));
return (_x);
}
static __inline __uint32_t
__swap32md(__uint32_t _x)
{
__asm ("bswap %0" : "+r" (_x));
return (_x);
}
static __inline __uint64_t
__swap64md(__uint64_t _x)
{
return ((__uint64_t)__swap32md(_x >> 32) |
(__uint64_t)__swap32md(_x & 0xffffffff) << 32);
}
/* Tell sys/endian.h we have MD variants of the swap macros. */
#define __HAVE_MD_SWAP
#define _BYTE_ORDER _LITTLE_ENDIAN
#ifndef __FROM_SYS__ENDIAN
#include <sys/endian.h>
#endif
#endif /* _MACHINE_ENDIAN_H_ */
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