1 /* $NetBSD: byteorder.h,v 1.5 2018/05/28 21:05:10 chs Exp $ */ 2 3 /* 4 * CDDL HEADER START 5 * 6 * The contents of this file are subject to the terms of the 7 * Common Development and Distribution License (the "License"). 8 * You may not use this file except in compliance with the License. 9 * 10 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 11 * or http://www.opensolaris.org/os/licensing. 12 * See the License for the specific language governing permissions 13 * and limitations under the License. 14 * 15 * When distributing Covered Code, include this CDDL HEADER in each 16 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 17 * If applicable, add the following below this CDDL HEADER, with the 18 * fields enclosed by brackets "[]" replaced with your own identifying 19 * information: Portions Copyright [yyyy] [name of copyright owner] 20 * 21 * CDDL HEADER END 22 * 23 * $FreeBSD: head/sys/cddl/compat/opensolaris/sys/byteorder.h 246586 2013-02-09 06:39:28Z delphij $ 24 */ 25 26 /* 27 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 28 * Use is subject to license terms. 29 */ 30 31 /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */ 32 /* All Rights Reserved */ 33 34 /* 35 * University Copyright- Copyright (c) 1982, 1986, 1988 36 * The Regents of the University of California 37 * All Rights Reserved 38 * 39 * University Acknowledgment- Portions of this document are derived from 40 * software developed by the University of California, Berkeley, and its 41 * contributors. 42 */ 43 44 #ifndef _OPENSOLARIS_SYS_BYTEORDER_H_ 45 #define _OPENSOLARIS_SYS_BYTEORDER_H_ 46 47 /* 48 * Macros to reverse byte order 49 */ 50 #define BSWAP_8(x) ((x) & 0xff) 51 #define BSWAP_16(x) ((BSWAP_8(x) << 8) | BSWAP_8((x) >> 8)) 52 #define BSWAP_32(x) ((BSWAP_16(x) << 16) | BSWAP_16((x) >> 16)) 53 #define BSWAP_64(x) ((BSWAP_32(x) << 32) | BSWAP_32((x) >> 32)) 54 55 #define BMASK_8(x) ((x) & 0xff) 56 #define BMASK_16(x) ((x) & 0xffff) 57 #define BMASK_32(x) ((x) & 0xffffffff) 58 #define BMASK_64(x) (x) 59 60 /* 61 * Macros to convert from a specific byte order to/from native byte order 62 */ 63 #if _BYTE_ORDER == _BIG_ENDIAN 64 #define BE_8(x) BMASK_8(x) 65 #define BE_16(x) BMASK_16(x) 66 #define BE_32(x) BMASK_32(x) 67 #define BE_64(x) BMASK_64(x) 68 #define LE_8(x) BSWAP_8(x) 69 #define LE_16(x) BSWAP_16(x) 70 #define LE_32(x) BSWAP_32(x) 71 #define LE_64(x) BSWAP_64(x) 72 #else 73 #define LE_8(x) BMASK_8(x) 74 #define LE_16(x) BMASK_16(x) 75 #define LE_32(x) BMASK_32(x) 76 #define LE_64(x) BMASK_64(x) 77 #define BE_8(x) BSWAP_8(x) 78 #define BE_16(x) BSWAP_16(x) 79 #define BE_32(x) BSWAP_32(x) 80 #define BE_64(x) BSWAP_64(x) 81 #endif 82 83 #if _BYTE_ORDER == _BIG_ENDIAN 84 #define htonll(x) BMASK_64(x) 85 #define ntohll(x) BMASK_64(x) 86 #else 87 #define htonll(x) BSWAP_64(x) 88 #define ntohll(x) BSWAP_64(x) 89 #endif 90 91 #define BE_IN32(xa) htonl(*((uint32_t *)(void *)(xa))) 92 93 #endif /* _OPENSOLARIS_SYS_BYTEORDER_H_ */ 94