extract.h (276788) | extract.h (285275) |
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1/* 2 * Copyright (c) 1992, 1993, 1994, 1995, 1996 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that: (1) source code distributions 7 * retain the above copyright notice and this paragraph in its entirety, (2) 8 * distributions including binary code include the above copyright notice and --- 102 unchanged lines hidden (view full) --- 111/* 112 * This isn't a GCC-compatible compiler, we don't have __attribute__, 113 * or we do but we don't know of any better way with this instruction 114 * set to do unaligned loads, so do unaligned loads of big-endian 115 * quantities the hard way - fetch the bytes one at a time and 116 * assemble them. 117 */ 118#define EXTRACT_16BITS(p) \ | 1/* 2 * Copyright (c) 1992, 1993, 1994, 1995, 1996 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that: (1) source code distributions 7 * retain the above copyright notice and this paragraph in its entirety, (2) 8 * distributions including binary code include the above copyright notice and --- 102 unchanged lines hidden (view full) --- 111/* 112 * This isn't a GCC-compatible compiler, we don't have __attribute__, 113 * or we do but we don't know of any better way with this instruction 114 * set to do unaligned loads, so do unaligned loads of big-endian 115 * quantities the hard way - fetch the bytes one at a time and 116 * assemble them. 117 */ 118#define EXTRACT_16BITS(p) \ |
119 ((uint16_t)((uint16_t)*((const uint8_t *)(p) + 0) << 8 | \ 120 (uint16_t)*((const uint8_t *)(p) + 1))) | 119 ((uint16_t)(((uint16_t)(*((const uint8_t *)(p) + 0)) << 8) | \ 120 ((uint16_t)(*((const uint8_t *)(p) + 1)) << 0))) |
121#define EXTRACT_32BITS(p) \ | 121#define EXTRACT_32BITS(p) \ |
122 ((uint32_t)((uint32_t)*((const uint8_t *)(p) + 0) << 24 | \ 123 (uint32_t)*((const uint8_t *)(p) + 1) << 16 | \ 124 (uint32_t)*((const uint8_t *)(p) + 2) << 8 | \ 125 (uint32_t)*((const uint8_t *)(p) + 3))) | 122 ((uint32_t)(((uint32_t)(*((const uint8_t *)(p) + 0)) << 24) | \ 123 ((uint32_t)(*((const uint8_t *)(p) + 1)) << 16) | \ 124 ((uint32_t)(*((const uint8_t *)(p) + 2)) << 8) | \ 125 ((uint32_t)(*((const uint8_t *)(p) + 3)) << 0))) |
126#define EXTRACT_64BITS(p) \ | 126#define EXTRACT_64BITS(p) \ |
127 ((uint64_t)((uint64_t)*((const uint8_t *)(p) + 0) << 56 | \ 128 (uint64_t)*((const uint8_t *)(p) + 1) << 48 | \ 129 (uint64_t)*((const uint8_t *)(p) + 2) << 40 | \ 130 (uint64_t)*((const uint8_t *)(p) + 3) << 32 | \ 131 (uint64_t)*((const uint8_t *)(p) + 4) << 24 | \ 132 (uint64_t)*((const uint8_t *)(p) + 5) << 16 | \ 133 (uint64_t)*((const uint8_t *)(p) + 6) << 8 | \ 134 (uint64_t)*((const uint8_t *)(p) + 7))) | 127 ((uint64_t)(((uint64_t)(*((const uint8_t *)(p) + 0)) << 56) | \ 128 ((uint64_t)(*((const uint8_t *)(p) + 1)) << 48) | \ 129 ((uint64_t)(*((const uint8_t *)(p) + 2)) << 40) | \ 130 ((uint64_t)(*((const uint8_t *)(p) + 3)) << 32) | \ 131 ((uint64_t)(*((const uint8_t *)(p) + 4)) << 24) | \ 132 ((uint64_t)(*((const uint8_t *)(p) + 5)) << 16) | \ 133 ((uint64_t)(*((const uint8_t *)(p) + 6)) << 8) | \ 134 ((uint64_t)(*((const uint8_t *)(p) + 7)) << 0))) |
135#endif /* must special-case unaligned accesses */ 136#else /* LBL_ALIGN */ 137/* 138 * The processor natively handles unaligned loads, so we can just 139 * cast the pointer and fetch through it. 140 */ 141static inline uint16_t 142EXTRACT_16BITS(const void *p) --- 13 unchanged lines hidden (view full) --- 156 return ((uint64_t)(((uint64_t)ntohl(*((const uint32_t *)(p) + 0))) << 32 | \ 157 ((uint64_t)ntohl(*((const uint32_t *)(p) + 1))) << 0)); 158 159} 160 161#endif /* LBL_ALIGN */ 162 163#define EXTRACT_24BITS(p) \ | 135#endif /* must special-case unaligned accesses */ 136#else /* LBL_ALIGN */ 137/* 138 * The processor natively handles unaligned loads, so we can just 139 * cast the pointer and fetch through it. 140 */ 141static inline uint16_t 142EXTRACT_16BITS(const void *p) --- 13 unchanged lines hidden (view full) --- 156 return ((uint64_t)(((uint64_t)ntohl(*((const uint32_t *)(p) + 0))) << 32 | \ 157 ((uint64_t)ntohl(*((const uint32_t *)(p) + 1))) << 0)); 158 159} 160 161#endif /* LBL_ALIGN */ 162 163#define EXTRACT_24BITS(p) \ |
164 ((uint32_t)((uint32_t)*((const uint8_t *)(p) + 0) << 16 | \ 165 (uint32_t)*((const uint8_t *)(p) + 1) << 8 | \ 166 (uint32_t)*((const uint8_t *)(p) + 2))) | 164 ((uint32_t)(((uint32_t)(*((const uint8_t *)(p) + 0)) << 16) | \ 165 ((uint32_t)(*((const uint8_t *)(p) + 1)) << 8) | \ 166 ((uint32_t)(*((const uint8_t *)(p) + 2)) << 0))) |
167 168#define EXTRACT_40BITS(p) \ | 167 168#define EXTRACT_40BITS(p) \ |
169 ((uint64_t)((uint64_t)*((const uint8_t *)(p) + 0) << 32 | \ 170 (uint64_t)*((const uint8_t *)(p) + 1) << 24 | \ 171 (uint64_t)*((const uint8_t *)(p) + 2) << 16 | \ 172 (uint64_t)*((const uint8_t *)(p) + 3) << 8 | \ 173 (uint64_t)*((const uint8_t *)(p) + 4))) | 169 ((uint64_t)(((uint64_t)(*((const uint8_t *)(p) + 0)) << 32) | \ 170 ((uint64_t)(*((const uint8_t *)(p) + 1)) << 24) | \ 171 ((uint64_t)(*((const uint8_t *)(p) + 2)) << 16) | \ 172 ((uint64_t)(*((const uint8_t *)(p) + 3)) << 8) | \ 173 ((uint64_t)(*((const uint8_t *)(p) + 4)) << 0))) |
174 175#define EXTRACT_48BITS(p) \ | 174 175#define EXTRACT_48BITS(p) \ |
176 ((uint64_t)((uint64_t)*((const uint8_t *)(p) + 0) << 40 | \ 177 (uint64_t)*((const uint8_t *)(p) + 1) << 32 | \ 178 (uint64_t)*((const uint8_t *)(p) + 2) << 24 | \ 179 (uint64_t)*((const uint8_t *)(p) + 3) << 16 | \ 180 (uint64_t)*((const uint8_t *)(p) + 4) << 8 | \ 181 (uint64_t)*((const uint8_t *)(p) + 5))) | 176 ((uint64_t)(((uint64_t)(*((const uint8_t *)(p) + 0)) << 40) | \ 177 ((uint64_t)(*((const uint8_t *)(p) + 1)) << 32) | \ 178 ((uint64_t)(*((const uint8_t *)(p) + 2)) << 24) | \ 179 ((uint64_t)(*((const uint8_t *)(p) + 3)) << 16) | \ 180 ((uint64_t)(*((const uint8_t *)(p) + 4)) << 8) | \ 181 ((uint64_t)(*((const uint8_t *)(p) + 5)) << 0))) |
182 183#define EXTRACT_56BITS(p) \ | 182 183#define EXTRACT_56BITS(p) \ |
184 ((uint64_t)((uint64_t)*((const uint8_t *)(p) + 0) << 48 | \ 185 (uint64_t)*((const uint8_t *)(p) + 1) << 40 | \ 186 (uint64_t)*((const uint8_t *)(p) + 2) << 32 | \ 187 (uint64_t)*((const uint8_t *)(p) + 3) << 24 | \ 188 (uint64_t)*((const uint8_t *)(p) + 4) << 16 | \ 189 (uint64_t)*((const uint8_t *)(p) + 5) << 8 | \ 190 (uint64_t)*((const uint8_t *)(p) + 6))) | 184 ((uint64_t)(((uint64_t)(*((const uint8_t *)(p) + 0)) << 48) | \ 185 ((uint64_t)(*((const uint8_t *)(p) + 1)) << 40) | \ 186 ((uint64_t)(*((const uint8_t *)(p) + 2)) << 32) | \ 187 ((uint64_t)(*((const uint8_t *)(p) + 3)) << 24) | \ 188 ((uint64_t)(*((const uint8_t *)(p) + 4)) << 16) | \ 189 ((uint64_t)(*((const uint8_t *)(p) + 5)) << 8) | \ 190 ((uint64_t)(*((const uint8_t *)(p) + 6)) << 0))) |
191 192/* 193 * Macros to extract possibly-unaligned little-endian integral values. 194 * XXX - do loads on little-endian machines that support unaligned loads? 195 */ 196#define EXTRACT_LE_8BITS(p) (*(p)) 197#define EXTRACT_LE_16BITS(p) \ | 191 192/* 193 * Macros to extract possibly-unaligned little-endian integral values. 194 * XXX - do loads on little-endian machines that support unaligned loads? 195 */ 196#define EXTRACT_LE_8BITS(p) (*(p)) 197#define EXTRACT_LE_16BITS(p) \ |
198 ((uint16_t)((uint16_t)*((const uint8_t *)(p) + 1) << 8 | \ 199 (uint16_t)*((const uint8_t *)(p) + 0))) | 198 ((uint16_t)(((uint16_t)(*((const uint8_t *)(p) + 1)) << 8) | \ 199 ((uint16_t)(*((const uint8_t *)(p) + 0)) << 0))) |
200#define EXTRACT_LE_32BITS(p) \ | 200#define EXTRACT_LE_32BITS(p) \ |
201 ((uint32_t)((uint32_t)*((const uint8_t *)(p) + 3) << 24 | \ 202 (uint32_t)*((const uint8_t *)(p) + 2) << 16 | \ 203 (uint32_t)*((const uint8_t *)(p) + 1) << 8 | \ 204 (uint32_t)*((const uint8_t *)(p) + 0))) | 201 ((uint32_t)(((uint32_t)(*((const uint8_t *)(p) + 3)) << 24) | \ 202 ((uint32_t)(*((const uint8_t *)(p) + 2)) << 16) | \ 203 ((uint32_t)(*((const uint8_t *)(p) + 1)) << 8) | \ 204 ((uint32_t)(*((const uint8_t *)(p) + 0)) << 0))) |
205#define EXTRACT_LE_24BITS(p) \ | 205#define EXTRACT_LE_24BITS(p) \ |
206 ((uint32_t)((uint32_t)*((const uint8_t *)(p) + 2) << 16 | \ 207 (uint32_t)*((const uint8_t *)(p) + 1) << 8 | \ 208 (uint32_t)*((const uint8_t *)(p) + 0))) | 206 ((uint32_t)(((uint32_t)(*((const uint8_t *)(p) + 2)) << 16) | \ 207 ((uint32_t)(*((const uint8_t *)(p) + 1)) << 8) | \ 208 ((uint32_t)(*((const uint8_t *)(p) + 0)) << 0))) |
209#define EXTRACT_LE_64BITS(p) \ | 209#define EXTRACT_LE_64BITS(p) \ |
210 ((uint64_t)((uint64_t)*((const uint8_t *)(p) + 7) << 56 | \ 211 (uint64_t)*((const uint8_t *)(p) + 6) << 48 | \ 212 (uint64_t)*((const uint8_t *)(p) + 5) << 40 | \ 213 (uint64_t)*((const uint8_t *)(p) + 4) << 32 | \ 214 (uint64_t)*((const uint8_t *)(p) + 3) << 24 | \ 215 (uint64_t)*((const uint8_t *)(p) + 2) << 16 | \ 216 (uint64_t)*((const uint8_t *)(p) + 1) << 8 | \ 217 (uint64_t)*((const uint8_t *)(p) + 0))) | 210 ((uint64_t)(((uint64_t)(*((const uint8_t *)(p) + 7)) << 56) | \ 211 ((uint64_t)(*((const uint8_t *)(p) + 6)) << 48) | \ 212 ((uint64_t)(*((const uint8_t *)(p) + 5)) << 40) | \ 213 ((uint64_t)(*((const uint8_t *)(p) + 4)) << 32) | \ 214 ((uint64_t)(*((const uint8_t *)(p) + 3)) << 24) | \ 215 ((uint64_t)(*((const uint8_t *)(p) + 2)) << 16) | \ 216 ((uint64_t)(*((const uint8_t *)(p) + 1)) << 8) | \ 217 ((uint64_t)(*((const uint8_t *)(p) + 0)) << 0))) |