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/* $OpenBSD: endian.h,v 1.10 2017/02/06 03:52:35 dlg 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 _ARM_ENDIAN_H_
#define _ARM_ENDIAN_H_
#ifdef _KERNEL
#ifdef __GNUC__
static inline __uint16_t
___swap16md(__uint16_t x)
{
__uint16_t rv;
__asm ("rev16 %0, %1" : "=r" (rv) : "r" (x));
return (rv);
}
#define __swap16md(x) ___swap16md(x)
static inline __uint32_t
___swap32md(__uint32_t x)
{
__uint32_t rv;
__asm ("rev %0, %1" : "=r" (rv) : "r" (x));
return (rv);
}
#define __swap32md(x) ___swap32md(x)
static inline __uint64_t
___swap64md(__uint64_t x)
{
__uint64_t rv;
rv = (__uint64_t)__swap32md(x >> 32) |
(__uint64_t)__swap32md(x) << 32;
return (rv);
}
#define __swap64md(x) ___swap64md(x)
/* Tell sys/endian.h we have MD variants of the swap macros. */
#define __HAVE_MD_SWAP
#endif /* __GNUC__ */
#endif /* _KERNEL */
#define _BYTE_ORDER _LITTLE_ENDIAN
#define __STRICT_ALIGNMENT
#ifndef __FROM_SYS__ENDIAN
#include <sys/endian.h>
#endif
#endif /* _ARM_ENDIAN_H_ */
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