/* $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_ */
