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2aa62f2b | 1 | /** @file\r |
2 | Byte order related definitions and declarations.\r | |
3 | \r | |
4 | Copyright (c) 2010 - 2011, Intel Corporation. All rights reserved.<BR>\r | |
5 | This program and the accompanying materials are licensed and made available\r | |
6 | under the terms and conditions of the BSD License that accompanies this\r | |
7 | distribution. The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.\r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | \r | |
13 | Copyright (c) 1990, 1993\r | |
14 | The Regents of the University of California. All rights reserved.\r | |
15 | \r | |
16 | Redistribution and use in source and binary forms, with or without\r | |
17 | modification, are permitted provided that the following conditions\r | |
18 | are met:\r | |
19 | - Redistributions of source code must retain the above copyright\r | |
20 | notice, this list of conditions and the following disclaimer.\r | |
21 | - Redistributions in binary form must reproduce the above copyright\r | |
22 | notice, this list of conditions and the following disclaimer in the\r | |
23 | documentation and/or other materials provided with the distribution.\r | |
24 | - Neither the name of the University nor the names of its contributors\r | |
25 | may be used to endorse or promote products derived from this software\r | |
26 | without specific prior written permission.\r | |
27 | \r | |
28 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"\r | |
29 | AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE\r | |
30 | IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE\r | |
31 | ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE\r | |
32 | LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR\r | |
33 | CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF\r | |
34 | SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS\r | |
35 | INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN\r | |
36 | CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)\r | |
37 | ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE\r | |
38 | POSSIBILITY OF SUCH DAMAGE.\r | |
39 | \r | |
40 | NetBSD: endian.h,v 1.24 2006/05/05 15:08:11 christos Exp\r | |
41 | endian.h 8.1 (Berkeley) 6/11/93\r | |
42 | **/\r | |
43 | #ifndef _SYS_ENDIAN_H_\r | |
44 | #define _SYS_ENDIAN_H_\r | |
45 | \r | |
46 | #include <sys/EfiCdefs.h>\r | |
47 | \r | |
48 | /*\r | |
49 | * Definitions for byte order, according to byte significance from low\r | |
50 | * address to high.\r | |
51 | */\r | |
52 | #define _LITTLE_ENDIAN 1234 /* LSB first: i386, vax */\r | |
53 | #define _BIG_ENDIAN 4321 /* MSB first: 68000, ibm, net */\r | |
54 | #define _PDP_ENDIAN 3412 /* LSB first in word, MSW first in long */\r | |
55 | \r | |
56 | \r | |
57 | #if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE)\r | |
58 | #ifndef _LOCORE\r | |
59 | \r | |
60 | /* C-family endian-ness definitions */\r | |
61 | \r | |
62 | #include <sys/ansi.h>\r | |
63 | #include <sys/types.h>\r | |
64 | \r | |
65 | #ifndef in_addr_t\r | |
66 | typedef __in_addr_t in_addr_t;\r | |
67 | #define in_addr_t __in_addr_t\r | |
68 | #endif\r | |
69 | \r | |
70 | #ifndef in_port_t\r | |
71 | typedef __in_port_t in_port_t;\r | |
72 | #define in_port_t __in_port_t\r | |
73 | #endif\r | |
74 | \r | |
75 | __BEGIN_DECLS\r | |
76 | uint32_t htonl(uint32_t) __attribute__((__const__));\r | |
77 | uint16_t htons(uint16_t) __attribute__((__const__));\r | |
78 | uint32_t ntohl(uint32_t) __attribute__((__const__));\r | |
79 | uint16_t ntohs(uint16_t) __attribute__((__const__));\r | |
80 | __END_DECLS\r | |
81 | \r | |
82 | #endif /* !_LOCORE */\r | |
83 | #endif /* _XOPEN_SOURCE || _NETBSD_SOURCE */\r | |
84 | \r | |
85 | \r | |
86 | #include <machine/endian_machdep.h>\r | |
87 | \r | |
88 | /*\r | |
89 | * Define the order of 32-bit words in 64-bit words.\r | |
90 | */\r | |
91 | #if _BYTE_ORDER == _LITTLE_ENDIAN\r | |
92 | #define _QUAD_HIGHWORD 1\r | |
93 | #define _QUAD_LOWWORD 0\r | |
94 | #endif\r | |
95 | \r | |
96 | #if _BYTE_ORDER == _BIG_ENDIAN\r | |
97 | #define _QUAD_HIGHWORD 0\r | |
98 | #define _QUAD_LOWWORD 1\r | |
99 | #endif\r | |
100 | \r | |
101 | \r | |
102 | #if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE)\r | |
103 | /*\r | |
104 | * Traditional names for byteorder. These are defined as the numeric\r | |
105 | * sequences so that third party code can "#define XXX_ENDIAN" and not\r | |
106 | * cause errors.\r | |
107 | */\r | |
108 | #define LITTLE_ENDIAN 1234 /* LSB first: i386, vax */\r | |
109 | #define BIG_ENDIAN 4321 /* MSB first: 68000, ibm, net */\r | |
110 | #define PDP_ENDIAN 3412 /* LSB first in word, MSW first in long */\r | |
111 | #define BYTE_ORDER _BYTE_ORDER\r | |
112 | \r | |
113 | #ifndef _LOCORE\r | |
114 | \r | |
115 | #include <machine/bswap.h>\r | |
116 | \r | |
117 | /*\r | |
118 | * Macros for network/external number representation conversion.\r | |
119 | */\r | |
120 | #if BYTE_ORDER == BIG_ENDIAN && !defined(__lint__)\r | |
121 | #define ntohl(x) (x)\r | |
122 | #define ntohs(x) (x)\r | |
123 | #define htonl(x) (x)\r | |
124 | #define htons(x) (x)\r | |
125 | \r | |
126 | #define NTOHL(x) (void) (x)\r | |
127 | #define NTOHS(x) (void) (x)\r | |
128 | #define HTONL(x) (void) (x)\r | |
129 | #define HTONS(x) (void) (x)\r | |
130 | \r | |
131 | #else /* LITTLE_ENDIAN || !defined(__lint__) */\r | |
132 | \r | |
133 | #define ntohl(x) bswap32((uint32_t)(x))\r | |
134 | #define ntohs(x) bswap16((uint16_t)(x))\r | |
135 | #define htonl(x) bswap32((uint32_t)(x))\r | |
136 | #define htons(x) bswap16((uint16_t)(x))\r | |
137 | \r | |
138 | #define NTOHL(x) (x) = ntohl((uint32_t)(x))\r | |
139 | #define NTOHS(x) (x) = ntohs((uint16_t)(x))\r | |
140 | #define HTONL(x) (x) = htonl((uint32_t)(x))\r | |
141 | #define HTONS(x) (x) = htons((uint16_t)(x))\r | |
142 | #endif /* LITTLE_ENDIAN || !defined(__lint__) */\r | |
143 | \r | |
144 | /*\r | |
145 | * Macros to convert to a specific endianness.\r | |
146 | */\r | |
147 | \r | |
148 | #if BYTE_ORDER == BIG_ENDIAN\r | |
149 | \r | |
150 | #define htobe16(x) (x)\r | |
151 | #define htobe32(x) (x)\r | |
152 | #define htobe64(x) (x)\r | |
153 | #define htole16(x) bswap16((uint16_t)(x))\r | |
154 | #define htole32(x) bswap32((uint32_t)(x))\r | |
155 | #define htole64(x) bswap64((uint64_t)(x))\r | |
156 | \r | |
157 | #define HTOBE16(x) (void) (x)\r | |
158 | #define HTOBE32(x) (void) (x)\r | |
159 | #define HTOBE64(x) (void) (x)\r | |
160 | #define HTOLE16(x) (x) = bswap16((uint16_t)(x))\r | |
161 | #define HTOLE32(x) (x) = bswap32((uint32_t)(x))\r | |
162 | #define HTOLE64(x) (x) = bswap64((uint64_t)(x))\r | |
163 | \r | |
164 | #else /* LITTLE_ENDIAN */\r | |
165 | \r | |
166 | #define htobe16(x) bswap16((uint16_t)(x))\r | |
167 | #define htobe32(x) bswap32((uint32_t)(x))\r | |
168 | #define htobe64(x) bswap64((uint64_t)(x))\r | |
169 | #define htole16(x) (x)\r | |
170 | #define htole32(x) (x)\r | |
171 | #define htole64(x) (x)\r | |
172 | \r | |
173 | #define HTOBE16(x) (x) = bswap16((uint16_t)(x))\r | |
174 | #define HTOBE32(x) (x) = bswap32((uint32_t)(x))\r | |
175 | #define HTOBE64(x) (x) = bswap64((uint64_t)(x))\r | |
176 | #define HTOLE16(x) (void) (x)\r | |
177 | #define HTOLE32(x) (void) (x)\r | |
178 | #define HTOLE64(x) (void) (x)\r | |
179 | \r | |
180 | #endif /* LITTLE_ENDIAN */\r | |
181 | \r | |
182 | #define be16toh(x) htobe16(x)\r | |
183 | #define be32toh(x) htobe32(x)\r | |
184 | #define be64toh(x) htobe64(x)\r | |
185 | #define le16toh(x) htole16(x)\r | |
186 | #define le32toh(x) htole32(x)\r | |
187 | #define le64toh(x) htole64(x)\r | |
188 | \r | |
189 | #define BE16TOH(x) HTOBE16(x)\r | |
190 | #define BE32TOH(x) HTOBE32(x)\r | |
191 | #define BE64TOH(x) HTOBE64(x)\r | |
192 | #define LE16TOH(x) HTOLE16(x)\r | |
193 | #define LE32TOH(x) HTOLE32(x)\r | |
194 | #define LE64TOH(x) HTOLE64(x)\r | |
195 | \r | |
196 | /*\r | |
197 | * Routines to encode/decode big- and little-endian multi-octet values\r | |
198 | * to/from an octet stream.\r | |
199 | */\r | |
200 | \r | |
201 | static __inline void __unused\r | |
202 | be16enc(void *buf, uint16_t u)\r | |
203 | {\r | |
204 | uint8_t *p = (uint8_t *)buf;\r | |
205 | \r | |
206 | p[0] = (uint8_t)(((unsigned)u >> 8) & 0xff);\r | |
207 | p[1] = (uint8_t)(u & 0xff);\r | |
208 | }\r | |
209 | \r | |
210 | static __inline void __unused\r | |
211 | le16enc(void *buf, uint16_t u)\r | |
212 | {\r | |
213 | uint8_t *p = (uint8_t *)buf;\r | |
214 | \r | |
215 | p[0] = (uint8_t)(u & 0xff);\r | |
216 | p[1] = (uint8_t)(((unsigned)u >> 8) & 0xff);\r | |
217 | }\r | |
218 | \r | |
219 | static __inline uint16_t __unused\r | |
220 | be16dec(const void *buf)\r | |
221 | {\r | |
222 | const uint8_t *p = (const uint8_t *)buf;\r | |
223 | \r | |
224 | return ((p[0] << 8) | p[1]);\r | |
225 | }\r | |
226 | \r | |
227 | static __inline uint16_t __unused\r | |
228 | le16dec(const void *buf)\r | |
229 | {\r | |
230 | const uint8_t *p = (const uint8_t *)buf;\r | |
231 | \r | |
232 | return ((p[1] << 8) | p[0]);\r | |
233 | }\r | |
234 | \r | |
235 | static __inline void __unused\r | |
236 | be32enc(void *buf, uint32_t u)\r | |
237 | {\r | |
238 | uint8_t *p = (uint8_t *)buf;\r | |
239 | \r | |
240 | p[0] = (uint8_t)((u >> 24) & 0xff);\r | |
241 | p[1] = (uint8_t)((u >> 16) & 0xff);\r | |
242 | p[2] = (uint8_t)((u >> 8) & 0xff);\r | |
243 | p[3] = (uint8_t)(u & 0xff);\r | |
244 | }\r | |
245 | \r | |
246 | static __inline void __unused\r | |
247 | le32enc(void *buf, uint32_t u)\r | |
248 | {\r | |
249 | uint8_t *p = (uint8_t *)buf;\r | |
250 | \r | |
251 | p[0] = (uint8_t)(u & 0xff);\r | |
252 | p[1] = (uint8_t)((u >> 8) & 0xff);\r | |
253 | p[2] = (uint8_t)((u >> 16) & 0xff);\r | |
254 | p[3] = (uint8_t)((u >> 24) & 0xff);\r | |
255 | }\r | |
256 | \r | |
257 | static __inline uint32_t __unused\r | |
258 | be32dec(const void *buf)\r | |
259 | {\r | |
260 | const uint8_t *p = (const uint8_t *)buf;\r | |
261 | \r | |
262 | return ((p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3]);\r | |
263 | }\r | |
264 | \r | |
265 | static __inline uint32_t __unused\r | |
266 | le32dec(const void *buf)\r | |
267 | {\r | |
268 | const uint8_t *p = (const uint8_t *)buf;\r | |
269 | \r | |
270 | return ((p[3] << 24) | (p[2] << 16) | (p[1] << 8) | p[0]);\r | |
271 | }\r | |
272 | \r | |
273 | static __inline void __unused\r | |
274 | be64enc(void *buf, uint64_t u)\r | |
275 | {\r | |
276 | uint8_t *p = (uint8_t *)buf;\r | |
277 | \r | |
278 | be32enc(p, (uint32_t)(u >> 32));\r | |
279 | be32enc(p + 4, (uint32_t)(u & 0xffffffffULL));\r | |
280 | }\r | |
281 | \r | |
282 | static __inline void __unused\r | |
283 | le64enc(void *buf, uint64_t u)\r | |
284 | {\r | |
285 | uint8_t *p = (uint8_t *)buf;\r | |
286 | \r | |
287 | le32enc(p, (uint32_t)(u & 0xffffffffULL));\r | |
288 | le32enc(p + 4, (uint32_t)(u >> 32));\r | |
289 | }\r | |
290 | \r | |
291 | static __inline uint64_t __unused\r | |
292 | be64dec(const void *buf)\r | |
293 | {\r | |
294 | const uint8_t *p = (const uint8_t *)buf;\r | |
295 | \r | |
296 | return (((uint64_t)be32dec(p) << 32) | be32dec(p + 4));\r | |
297 | }\r | |
298 | \r | |
299 | static __inline uint64_t __unused\r | |
300 | le64dec(const void *buf)\r | |
301 | {\r | |
302 | const uint8_t *p = (const uint8_t *)buf;\r | |
303 | \r | |
304 | return (le32dec(p) | ((uint64_t)le32dec(p + 4) << 32));\r | |
305 | }\r | |
306 | \r | |
307 | #endif /* !_LOCORE */\r | |
308 | #endif /* _XOPEN_SOURCE || _NETBSD_SOURCE */\r | |
309 | #endif /* !_SYS_ENDIAN_H_ */\r |