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/* $OpenBSD: endian.h,v 1.25 2014/12/21 04:49:00 guenther 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.
*/
/*
* Public definitions for little- and big-endian systems.
* This file should be included as <endian.h> in userspace and as
* <sys/endian.h> in the kernel.
*
* System headers that need endian information but that can't or don't
* want to export the public names here should include <sys/_endian.h>
* and use the internal names: _BYTE_ORDER, _*_ENDIAN, etc.
*/
#ifndef _SYS_ENDIAN_H_
#define _SYS_ENDIAN_H_
#include <sys/cdefs.h>
#include <sys/_endian.h>
/* Public names */
#define LITTLE_ENDIAN _LITTLE_ENDIAN
#define BIG_ENDIAN _BIG_ENDIAN
#define PDP_ENDIAN _PDP_ENDIAN
#define BYTE_ORDER _BYTE_ORDER
/*
* These are specified to be function-like macros to match the spec
*/
#define htobe16(x) __htobe16(x)
#define htobe32(x) __htobe32(x)
#define htobe64(x) __htobe64(x)
#define htole16(x) __htole16(x)
#define htole32(x) __htole32(x)
#define htole64(x) __htole64(x)
/* POSIX names */
#define be16toh(x) __htobe16(x)
#define be32toh(x) __htobe32(x)
#define be64toh(x) __htobe64(x)
#define le16toh(x) __htole16(x)
#define le32toh(x) __htole32(x)
#define le64toh(x) __htole64(x)
#if __BSD_VISIBLE
#define swap16(x) __swap16(x)
#define swap32(x) __swap32(x)
#define swap64(x) __swap64(x)
#define swap16_multi(v, n) do { \
__size_t __swap16_multi_n = (n); \
__uint16_t *__swap16_multi_v = (v); \
\
while (__swap16_multi_n) { \
*__swap16_multi_v = swap16(*__swap16_multi_v); \
__swap16_multi_v++; \
__swap16_multi_n--; \
} \
} while (0)
/* original BSD names */
#define betoh16(x) __htobe16(x)
#define betoh32(x) __htobe32(x)
#define betoh64(x) __htobe64(x)
#define letoh16(x) __htole16(x)
#define letoh32(x) __htole32(x)
#define letoh64(x) __htole64(x)
#ifndef htons
/* these were exposed here before */
#define htons(x) __htobe16(x)
#define htonl(x) __htobe32(x)
#define ntohs(x) __htobe16(x)
#define ntohl(x) __htobe32(x)
#endif
/* ancient stuff */
#define NTOHL(x) (x) = ntohl((u_int32_t)(x))
#define NTOHS(x) (x) = ntohs((u_int16_t)(x))
#define HTONL(x) (x) = htonl((u_int32_t)(x))
#define HTONS(x) (x) = htons((u_int16_t)(x))
#endif /* __BSD_VISIBLE */
#ifdef _KERNEL
/* to/from memory conversions */
#define bemtoh16 __bemtoh16
#define bemtoh32 __bemtoh32
#define bemtoh64 __bemtoh64
#define htobem16 __htobem16
#define htobem32 __htobem32
#define htobem64 __htobem64
#define lemtoh16 __lemtoh16
#define lemtoh32 __lemtoh32
#define lemtoh64 __lemtoh64
#define htolem16 __htolem16
#define htolem32 __htolem32
#define htolem64 __htolem64
#endif /* _KERNEL */
#endif /* _SYS_ENDIAN_H_ */
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