1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright (c) 2001 by Sun Microsystems, Inc. 24 * All rights reserved. 25 */ 26 27 #ifndef _BYTEORDER_H 28 #define _BYTEORDER_H 29 30 #ifdef __cplusplus 31 extern "C" { 32 #endif 33 34 #include <sys/types.h> 35 36 #define swap32(x) \ 37 ((uint32_t)((((uint32_t)(x) & 0x000000ff) << 24) | \ 38 (((uint32_t)(x) & 0x0000ff00) << 8) | \ 39 (((uint32_t)(x) & 0x00ff0000) >> 8) | \ 40 (((uint32_t)(x) & 0xff000000) >> 24))) 41 42 #define swap16(x) \ 43 ((uint16_t)((((uint16_t)(x) & 0x00ff) << 8) | \ 44 (((uint16_t)(x) & 0xff00) >> 8))) 45 46 /* 47 * endianess issues 48 */ 49 #if defined(_BIG_ENDIAN) 50 #define CPU_TO_LE32(x) swap32(x) 51 #define CPU_TO_LE16(x) swap16(x) 52 #define CPU_TO_BE32(x) (x) 53 #define CPU_TO_BE16(x) (x) 54 #else 55 #define CPU_TO_LE32(x) (x) 56 #define CPU_TO_LE16(x) (x) 57 #define CPU_TO_BE32(x) swap32(x) 58 #define CPU_TO_BE16(x) swap16(x) 59 #endif 60 61 #define LE32_TO_CPU(x) CPU_TO_LE32(x) 62 #define LE16_TO_CPU(x) CPU_TO_LE16(x) 63 #define BE32_TO_CPU(x) CPU_TO_BE32(x) 64 #define BE16_TO_CPU(x) CPU_TO_BE16(x) 65 66 #ifdef __cplusplus 67 } 68 #endif 69 70 #endif /* _BYTEORDER_H */ 71