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 http://www.opensolaris.org/os/licensing. 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 22/* 23 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27/* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */ 28/* All Rights Reserved */ 29 30/* 31 * University Copyright- Copyright (c) 1982, 1986, 1988 32 * The Regents of the University of California 33 * All Rights Reserved 34 * 35 * University Acknowledgment- Portions of this document are derived from 36 * software developed by the University of California, Berkeley, and its 37 * contributors. 38 */ 39 40#ifndef _SYS_BYTEORDER_H 41#define _SYS_BYTEORDER_H 42 43#include <sys/isa_defs.h> 44#include <sys/int_types.h> 45 46#if defined(__GNUC__) && defined(_ASM_INLINES) && \ 47 (defined(__i386) || defined(__amd64)) 48#include <asm/byteorder.h> 49#endif 50 51#ifdef __cplusplus 52extern "C" { 53#endif 54 55/* 56 * macros for conversion between host and (internet) network byte order 57 */ 58 59#if defined(_BIG_ENDIAN) && !defined(ntohl) && !defined(__lint) 60/* big-endian */ 61#define ntohl(x) (x) 62#define ntohs(x) (x) 63#define htonl(x) (x) 64#define htons(x) (x) 65#if !defined(_XPG4_2) || defined(__EXTENSIONS__) 66#define ntohll(x) (x) 67#define htonll(x) (x) 68#endif /* !_XPG4_2 || __EXTENSIONS__ */ 69 70#elif !defined(ntohl) /* little-endian */ 71 72#ifndef _IN_PORT_T 73#define _IN_PORT_T 74typedef uint16_t in_port_t; 75#endif 76 77#ifndef _IN_ADDR_T 78#define _IN_ADDR_T 79typedef uint32_t in_addr_t; 80#endif 81 82#if !defined(_XPG4_2) || defined(__EXTENSIONS__) || defined(_XPG5) 83extern uint32_t htonl(uint32_t); 84extern uint16_t htons(uint16_t); 85extern uint32_t ntohl(uint32_t); 86extern uint16_t ntohs(uint16_t); 87#else 88extern in_addr_t htonl(in_addr_t); 89extern in_port_t htons(in_port_t); 90extern in_addr_t ntohl(in_addr_t); 91extern in_port_t ntohs(in_port_t); 92#endif /* !_XPG4_2 || __EXTENSIONS__ || _XPG5 */ 93 94#if defined(_LP64) || defined(_LONGLONG_TYPE) 95#if !defined(_XPG4_2) || defined(__EXTENSIONS__) 96extern uint64_t htonll(uint64_t); 97extern uint64_t ntohll(uint64_t); 98#endif /* !_XPG4_2 || __EXTENSIONS__ */ 99#endif /* _LP64 || _LONGLONG_TYPE */ 100#endif 101 102#if !defined(_XPG4_2) || defined(__EXTENSIONS__) 103 104/* 105 * Macros to reverse byte order 106 */ 107#define BSWAP_8(x) ((x) & 0xff) 108#if !defined(__i386) && !defined(__amd64) 109#define BSWAP_16(x) ((BSWAP_8(x) << 8) | BSWAP_8((x) >> 8)) 110#define BSWAP_32(x) (((uint32_t)(x) << 24) | \ 111 (((uint32_t)(x) << 8) & 0xff0000) | \ 112 (((uint32_t)(x) >> 8) & 0xff00) | \ 113 ((uint32_t)(x) >> 24)) 114#else /* x86 */ 115#define BSWAP_16(x) htons(x) 116#define BSWAP_32(x) htonl(x) 117#endif /* !__i386 && !__amd64 */ 118 119#if defined(_LP64) || defined(_LONGLONG_TYPE) 120#if (!defined(__i386) && !defined(__amd64)) 121#define BSWAP_64(x) (((uint64_t)(x) << 56) | \ 122 (((uint64_t)(x) << 40) & 0xff000000000000ULL) | \ 123 (((uint64_t)(x) << 24) & 0xff0000000000ULL) | \ 124 (((uint64_t)(x) << 8) & 0xff00000000ULL) | \ 125 (((uint64_t)(x) >> 8) & 0xff000000ULL) | \ 126 (((uint64_t)(x) >> 24) & 0xff0000ULL) | \ 127 (((uint64_t)(x) >> 40) & 0xff00ULL) | \ 128 ((uint64_t)(x) >> 56)) 129#else /* x86 */ 130#define BSWAP_64(x) htonll(x) 131#endif /* !__i386 && !__amd64 */ 132#else /* no uint64_t */ 133#define BSWAP_64(x) ((BSWAP_32(x) << 32) | BSWAP_32((x) >> 32)) 134#endif /* _LP64 || _LONGLONG_TYPE */ 135 136#define BMASK_8(x) ((x) & 0xff) 137#define BMASK_16(x) ((x) & 0xffff) 138#define BMASK_32(x) ((x) & 0xffffffff) 139#define BMASK_64(x) (x) 140 141/* 142 * Macros to convert from a specific byte order to/from native byte order 143 */ 144#ifdef _BIG_ENDIAN 145#define BE_8(x) BMASK_8(x) 146#define BE_16(x) BMASK_16(x) 147#define BE_32(x) BMASK_32(x) 148#define BE_64(x) BMASK_64(x) 149#define LE_8(x) BSWAP_8(x) 150#define LE_16(x) BSWAP_16(x) 151#define LE_32(x) BSWAP_32(x) 152#define LE_64(x) BSWAP_64(x) 153#else 154#define LE_8(x) BMASK_8(x) 155#define LE_16(x) BMASK_16(x) 156#define LE_32(x) BMASK_32(x) 157#define LE_64(x) BMASK_64(x) 158#define BE_8(x) BSWAP_8(x) 159#define BE_16(x) BSWAP_16(x) 160#define BE_32(x) BSWAP_32(x) 161#define BE_64(x) BSWAP_64(x) 162#endif 163 164/* 165 * Macros to read unaligned values from a specific byte order to 166 * native byte order 167 */ 168 169#define BE_IN8(xa) \ 170 *((uint8_t *)(xa)) 171 172#if !defined(__i386) && !defined(__amd64) 173#define BE_IN16(xa) \ 174 (((uint16_t)BE_IN8(xa) << 8) | BE_IN8((uint8_t *)(xa) + 1)) 175 176#define BE_IN32(xa) \ 177 (((uint32_t)BE_IN16(xa) << 16) | BE_IN16((uint8_t *)(xa) + 2)) 178 179#else /* x86 */ 180#define BE_IN16(xa) htons(*((uint16_t *)(void *)(xa))) 181#define BE_IN32(xa) htonl(*((uint32_t *)(void *)(xa))) 182#endif /* !__i386 && !__amd64 */ 183 184#if (!defined(__i386) && !defined(__amd64)) || \ 185 (!defined(_LP64) && !defined(_LONGLONG_TYPE)) 186#define BE_IN64(xa) \ 187 (((uint64_t)BE_IN32(xa) << 32) | BE_IN32((uint8_t *)(xa) + 4)) 188#else /* x86 */ 189#define BE_IN64(xa) htonll(*((uint64_t *)(void *)(xa))) 190#endif /* (!__i386 && !__amd64) || (!_LP64 && !_LONGLONG_TYPE) */ 191 192#define LE_IN8(xa) \ 193 *((uint8_t *)(xa)) 194 195#define LE_IN16(xa) \ 196 (((uint16_t)LE_IN8((uint8_t *)(xa) + 1) << 8) | LE_IN8(xa)) 197 198#define LE_IN32(xa) \ 199 (((uint32_t)LE_IN16((uint8_t *)(xa) + 2) << 16) | LE_IN16(xa)) 200 201#define LE_IN64(xa) \ 202 (((uint64_t)LE_IN32((uint8_t *)(xa) + 4) << 32) | LE_IN32(xa)) 203 204/* 205 * Macros to write unaligned values from native byte order to a specific byte 206 * order. 207 */ 208 209#define BE_OUT8(xa, yv) *((uint8_t *)(xa)) = (uint8_t)(yv); 210 211#define BE_OUT16(xa, yv) \ 212 BE_OUT8((uint8_t *)(xa) + 1, yv); \ 213 BE_OUT8((uint8_t *)(xa), (yv) >> 8); 214 215#define BE_OUT32(xa, yv) \ 216 BE_OUT16((uint8_t *)(xa) + 2, yv); \ 217 BE_OUT16((uint8_t *)(xa), (yv) >> 16); 218 219#if (!defined(__i386) && !defined(__amd64)) || \ 220 (!defined(_LP64) && !defined(_LONGLONG_TYPE)) 221#define BE_OUT64(xa, yv) \ 222 BE_OUT32((uint8_t *)(xa) + 4, yv); \ 223 BE_OUT32((uint8_t *)(xa), (yv) >> 32); 224#else /* x86 with uint64_t */ 225#define BE_OUT64(xa, yv) *((uint64_t *)(void *)(xa)) = htonll((uint64_t)(yv)); 226#endif /* (!__i386 && !__amd64) || (!_LP64 && !_LONGLONG_TYPE) */ 227 228#define LE_OUT8(xa, yv) *((uint8_t *)(xa)) = (uint8_t)(yv); 229 230#define LE_OUT16(xa, yv) \ 231 LE_OUT8((uint8_t *)(xa), yv); \ 232 LE_OUT8((uint8_t *)(xa) + 1, (yv) >> 8); 233 234#define LE_OUT32(xa, yv) \ 235 LE_OUT16((uint8_t *)(xa), yv); \ 236 LE_OUT16((uint8_t *)(xa) + 2, (yv) >> 16); 237 238#define LE_OUT64(xa, yv) \ 239 LE_OUT32((uint8_t *)(xa), yv); \ 240 LE_OUT32((uint8_t *)(xa) + 4, (yv) >> 32); 241 242#endif /* !_XPG4_2 || __EXTENSIONS__ */ 243 244#ifdef __cplusplus 245} 246#endif 247 248#endif /* _SYS_BYTEORDER_H */ 249