1 /* $NetBSD: bswap.h,v 1.2 2013/05/03 16:05:12 matt Exp $ */ 2 3 /*- 4 * Copyright (c) 2009 Izumi Tsutsui. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #include <sys/types.h> 28 29 #if HAVE_NBTOOL_CONFIG_H 30 #ifndef BYTE_ORDER 31 #ifdef WORDS_BIGENDIAN 32 #define BYTE_ORDER BIG_ENDIAN 33 #else 34 #define BYTE_ORDER LITTLE_ENDIAN 35 #endif 36 #endif 37 #else 38 #include <sys/endian.h> 39 #endif 40 41 extern int bswap_p; 42 extern u_int maxpartitions; 43 44 #define htotarget16(x) (bswap_p ? bswap16(x) : (x)) 45 #define target16toh(x) (bswap_p ? bswap16(x) : (x)) 46 #define htotarget32(x) (bswap_p ? bswap32(x) : (x)) 47 #define target32toh(x) (bswap_p ? bswap32(x) : (x)) 48 49 void htotargetlabel(struct disklabel *, const struct disklabel *); 50 void targettohlabel(struct disklabel *, const struct disklabel *); 51 uint16_t dkcksum_target(struct disklabel *); 52