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.
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.
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]
23 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
27 /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
28 /* All Rights Reserved */
31 * University Copyright- Copyright (c) 1982, 1986, 1988
32 * The Regents of the University of California
35 * University Acknowledgment- Portions of this document are derived from
36 * software developed by the University of California, Berkeley, and its
40 #ifndef _SYS_BYTEORDER_H
41 #define _SYS_BYTEORDER_H
43 #include <sys/isa_defs.h>
44 #include <sys/int_types.h>
46 #if defined(__GNUC__) && defined(_ASM_INLINES) && \
47 (defined(__i386) || defined(__amd64))
48 #include <asm/byteorder.h>
56 * macros for conversion between host and (internet) network byte order
59 #if defined(_BIG_ENDIAN) && !defined(ntohl) && !defined(__lint)
65 #if !defined(_XPG4_2) || defined(__EXTENSIONS__)
68 #endif /* !_XPG4_2 || __EXTENSIONS__ */
70 #elif !defined(ntohl) /* little-endian */
74 typedef uint16_t in_port_t
;
79 typedef uint32_t in_addr_t
;
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);
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 */
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 */
102 #if !defined(_XPG4_2) || defined(__EXTENSIONS__)
105 * Macros to reverse byte order
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))
115 #define BSWAP_16(x) htons(x)
116 #define BSWAP_32(x) htonl(x)
117 #endif /* !__i386 && !__amd64 */
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))
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 */
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)
142 * Macros to convert from a specific byte order to/from native byte order
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)
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)
165 * Macros to read unaligned values from a specific byte order to
172 #if !defined(__i386) && !defined(__amd64)
173 #define BE_IN16(xa) \
174 (((uint16_t)BE_IN8(xa) << 8) | BE_IN8((uint8_t *)(xa) + 1))
176 #define BE_IN32(xa) \
177 (((uint32_t)BE_IN16(xa) << 16) | BE_IN16((uint8_t *)(xa) + 2))
180 #define BE_IN16(xa) htons(*((uint16_t *)(void *)(xa)))
181 #define BE_IN32(xa) htonl(*((uint32_t *)(void *)(xa)))
182 #endif /* !__i386 && !__amd64 */
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))
189 #define BE_IN64(xa) htonll(*((uint64_t *)(void *)(xa)))
190 #endif /* (!__i386 && !__amd64) || (!_LP64 && !_LONGLONG_TYPE) */
195 #define LE_IN16(xa) \
196 (((uint16_t)LE_IN8((uint8_t *)(xa) + 1) << 8) | LE_IN8(xa))
198 #define LE_IN32(xa) \
199 (((uint32_t)LE_IN16((uint8_t *)(xa) + 2) << 16) | LE_IN16(xa))
201 #define LE_IN64(xa) \
202 (((uint64_t)LE_IN32((uint8_t *)(xa) + 4) << 32) | LE_IN32(xa))
205 * Macros to write unaligned values from native byte order to a specific byte
209 #define BE_OUT8(xa, yv) *((uint8_t *)(xa)) = (uint8_t)(yv);
211 #define BE_OUT16(xa, yv) \
212 BE_OUT8((uint8_t *)(xa) + 1, yv); \
213 BE_OUT8((uint8_t *)(xa), (yv) >> 8);
215 #define BE_OUT32(xa, yv) \
216 BE_OUT16((uint8_t *)(xa) + 2, yv); \
217 BE_OUT16((uint8_t *)(xa), (yv) >> 16);
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) */
228 #define LE_OUT8(xa, yv) *((uint8_t *)(xa)) = (uint8_t)(yv);
230 #define LE_OUT16(xa, yv) \
231 LE_OUT8((uint8_t *)(xa), yv); \
232 LE_OUT8((uint8_t *)(xa) + 1, (yv) >> 8);
234 #define LE_OUT32(xa, yv) \
235 LE_OUT16((uint8_t *)(xa), yv); \
236 LE_OUT16((uint8_t *)(xa) + 2, (yv) >> 16);
238 #define LE_OUT64(xa, yv) \
239 LE_OUT32((uint8_t *)(xa), yv); \
240 LE_OUT32((uint8_t *)(xa) + 4, (yv) >> 32);
242 #endif /* !_XPG4_2 || __EXTENSIONS__ */
248 #endif /* _SYS_BYTEORDER_H */