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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or https://opensource.org/licenses/CDDL-1.0. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 * 21 * $FreeBSD$ 22 */ 23 24 /* 25 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 26 * Use is subject to license terms. 27 */ 28 29 /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */ 30 /* All Rights Reserved */ 31 32 /* 33 * University Copyright- Copyright (c) 1982, 1986, 1988 34 * The Regents of the University of California 35 * All Rights Reserved 36 * 37 * University Acknowledgment- Portions of this document are derived from 38 * software developed by the University of California, Berkeley, and its 39 * contributors. 40 */ 41 42 #ifndef _OPENSOLARIS_SYS_BYTEORDER_H_ 43 #define _OPENSOLARIS_SYS_BYTEORDER_H_ 44 45 #include <sys/endian.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 !defined(_STANDALONE) 84 #if BYTE_ORDER == _BIG_ENDIAN 85 #define htonll(x) BMASK_64(x) 86 #define ntohll(x) BMASK_64(x) 87 #else /* BYTE_ORDER == _LITTLE_ENDIAN */ 88 #ifndef __LP64__ 89 static __inline__ uint64_t 90 htonll(uint64_t n) 91 { 92 return ((((uint64_t)htonl(n)) << 32) + htonl(n >> 32)); 93 } 94 95 static __inline__ uint64_t 96 ntohll(uint64_t n) 97 { 98 return ((((uint64_t)ntohl(n)) << 32) + ntohl(n >> 32)); 99 } 100 #else /* !__LP64__ */ 101 #define htonll(x) BSWAP_64(x) 102 #define ntohll(x) BSWAP_64(x) 103 #endif /* __LP64__ */ 104 #endif /* BYTE_ORDER */ 105 #endif /* _STANDALONE */ 106 107 #define BE_IN32(xa) htonl(*((uint32_t *)(void *)(xa))) 108 109 #endif /* _OPENSOLARIS_SYS_BYTEORDER_H_ */ 110