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 2008 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 52 extern "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 74 typedef uint16_t in_port_t; 75 #endif 76 77 #ifndef _IN_ADDR_T 78 #define _IN_ADDR_T 79 typedef uint32_t in_addr_t; 80 #endif 81 82 #if !defined(_XPG4_2) || defined(__EXTENSIONS__) || defined(_XPG5) 83 extern uint32_t htonl(uint32_t); 84 extern uint16_t htons(uint16_t); 85 extern uint32_t ntohl(uint32_t); 86 extern uint16_t ntohs(uint16_t); 87 #else 88 extern in_addr_t htonl(in_addr_t); 89 extern in_port_t htons(in_port_t); 90 extern in_addr_t ntohl(in_addr_t); 91 extern 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__) 96 extern uint64_t htonll(uint64_t); 97 extern 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(_LP64) && !defined(_LONGLONG_TYPE) 185 #if (!defined(__i386) && !defined(__amd64)) /* sparc */ 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) */ 191 #endif /* !_LP64 && !_LONGLONG_TYPE */ 192 193 #define LE_IN8(xa) \ 194 *((uint8_t *)(xa)) 195 196 #define LE_IN16(xa) \ 197 (((uint16_t)LE_IN8((uint8_t *)(xa) + 1) << 8) | LE_IN8(xa)) 198 199 #define LE_IN32(xa) \ 200 (((uint32_t)LE_IN16((uint8_t *)(xa) + 2) << 16) | LE_IN16(xa)) 201 202 #define LE_IN64(xa) \ 203 (((uint64_t)LE_IN32((uint8_t *)(xa) + 4) << 32) | LE_IN32(xa)) 204 205 /* 206 * Macros to write unaligned values from native byte order to a specific byte 207 * order. 208 */ 209 210 #define BE_OUT8(xa, yv) *((uint8_t *)(xa)) = (uint8_t)(yv); 211 212 #define BE_OUT16(xa, yv) \ 213 BE_OUT8((uint8_t *)(xa) + 1, yv); \ 214 BE_OUT8((uint8_t *)(xa), (yv) >> 8); 215 216 #define BE_OUT32(xa, yv) \ 217 BE_OUT16((uint8_t *)(xa) + 2, yv); \ 218 BE_OUT16((uint8_t *)(xa), (yv) >> 16); 219 220 #if (!defined(__i386) && !defined(__amd64)) || \ 221 (!defined(_LP64) && !defined(_LONGLONG_TYPE)) 222 #define BE_OUT64(xa, yv) \ 223 BE_OUT32((uint8_t *)(xa) + 4, yv); \ 224 BE_OUT32((uint8_t *)(xa), (yv) >> 32); 225 #else /* x86 with uint64_t */ 226 #define BE_OUT64(xa, yv) *((uint64_t *)(void *)(xa)) = htonll((uint64_t)(yv)); 227 #endif /* (!__i386 && !__amd64) || (!_LP64 && !_LONGLONG_TYPE) */ 228 229 #define LE_OUT8(xa, yv) *((uint8_t *)(xa)) = (uint8_t)(yv); 230 231 #define LE_OUT16(xa, yv) \ 232 LE_OUT8((uint8_t *)(xa), yv); \ 233 LE_OUT8((uint8_t *)(xa) + 1, (yv) >> 8); 234 235 #define LE_OUT32(xa, yv) \ 236 LE_OUT16((uint8_t *)(xa), yv); \ 237 LE_OUT16((uint8_t *)(xa) + 2, (yv) >> 16); 238 239 #define LE_OUT64(xa, yv) \ 240 LE_OUT32((uint8_t *)(xa), yv); \ 241 LE_OUT32((uint8_t *)(xa) + 4, (yv) >> 32); 242 243 #endif /* !_XPG4_2 || __EXTENSIONS__ */ 244 245 #ifdef __cplusplus 246 } 247 #endif 248 249 #endif /* _SYS_BYTEORDER_H */ 250