1*95b39c65Schristos /* DO NOT EDIT! GENERATED AUTOMATICALLY! */ 2*95b39c65Schristos /* byteswap.h - Byte swapping 3*95b39c65Schristos Copyright (C) 2005 Free Software Foundation, Inc. 4*95b39c65Schristos Written by Oskar Liljeblad <oskar@osk.mine.nu>, 2005. 5*95b39c65Schristos 6*95b39c65Schristos This program is free software; you can redistribute it and/or modify 7*95b39c65Schristos it under the terms of the GNU General Public License as published by 8*95b39c65Schristos the Free Software Foundation; either version 2, or (at your option) 9*95b39c65Schristos any later version. 10*95b39c65Schristos 11*95b39c65Schristos This program is distributed in the hope that it will be useful, 12*95b39c65Schristos but WITHOUT ANY WARRANTY; without even the implied warranty of 13*95b39c65Schristos MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14*95b39c65Schristos GNU General Public License for more details. 15*95b39c65Schristos 16*95b39c65Schristos You should have received a copy of the GNU General Public License 17*95b39c65Schristos along with this program; if not, write to the Free Software Foundation, 18*95b39c65Schristos Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ 19*95b39c65Schristos 20*95b39c65Schristos #ifndef _BYTESWAP_H 21*95b39c65Schristos 22*95b39c65Schristos #include <sys/endian.h> 23*95b39c65Schristos #if _BYTE_ORDER == _LITTLE_ENDIAN 24*95b39c65Schristos /* Given an unsigned 16-bit argument X, return the value corresponding to 25*95b39c65Schristos X with reversed byte order. */ 26*95b39c65Schristos #define bswap_16(x) ((((x) & 0x00FF) << 8) | \ 27*95b39c65Schristos (((x) & 0xFF00) >> 8)) 28*95b39c65Schristos 29*95b39c65Schristos /* Given an unsigned 32-bit argument X, return the value corresponding to 30*95b39c65Schristos X with reversed byte order. */ 31*95b39c65Schristos #define bswap_32(x) ((((x) & 0x000000FF) << 24) | \ 32*95b39c65Schristos (((x) & 0x0000FF00) << 8) | \ 33*95b39c65Schristos (((x) & 0x00FF0000) << 8) | \ 34*95b39c65Schristos (((x) & 0xFF000000) >> 24)) 35*95b39c65Schristos 36*95b39c65Schristos /* Given an unsigned 64-bit argument X, return the value corresponding to 37*95b39c65Schristos X with reversed byte order. */ 38*95b39c65Schristos #define bswap_64(x) ((((x) & 0x00000000000000FFULL) << 56) | \ 39*95b39c65Schristos (((x) & 0x000000000000FF00ULL) << 40) | \ 40*95b39c65Schristos (((x) & 0x0000000000FF0000ULL) << 24) | \ 41*95b39c65Schristos (((x) & 0x00000000FF000000ULL) << 8) | \ 42*95b39c65Schristos (((x) & 0x000000FF00000000ULL) >> 8) | \ 43*95b39c65Schristos (((x) & 0x0000FF0000000000ULL) >> 24) | \ 44*95b39c65Schristos (((x) & 0x00FF000000000000ULL) >> 40) | \ 45*95b39c65Schristos (((x) & 0xFF00000000000000ULL) >> 56)) 46*95b39c65Schristos #else 47*95b39c65Schristos #define bswap_16(x) (x) 48*95b39c65Schristos #define bswap_32(x) (x) 49*95b39c65Schristos #define bswap_64(x) (x) 50*95b39c65Schristos #endif 51*95b39c65Schristos 52*95b39c65Schristos #endif 53