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/* $OpenBSD: endian.h,v 1.3 2018/10/01 17:42:16 naddy Exp $ */
/*
* Copyright (c) 2015 David Gwynne <dlg@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#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)
{
__uint16_t _rv;
__asm ("rev16 %w0, %w1" : "=r" (_rv) : "r"(_x));
return (_rv);
}
static __inline __uint32_t
__swap32md(__uint32_t _x)
{
__uint32_t _rv;
__asm ("rev %w0, %w1" : "=r" (_rv) : "r"(_x));
return (_rv);
}
static __inline __uint64_t
__swap64md(__uint64_t _x)
{
__uint64_t _rv;
__asm ("rev %x0, %x1" : "=r" (_rv) : "r"(_x));
return (_rv);
}
/* Tell sys/endian.h we have MD variants of the swap macros. */
#define __HAVE_MD_SWAP
#define _BYTE_ORDER _LITTLE_ENDIAN
#define __STRICT_ALIGNMENT
#ifndef __FROM_SYS__ENDIAN
#include <sys/endian.h>
#endif
#endif /* _MACHINE_ENDIAN_H_ */
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