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6b033bc4 | 1 | /* -*-c-*- |
6b033bc4 | 2 | * |
3 | * Portable bit-level manipulation macros | |
4 | * | |
5 | * (c) 1998 Straylight/Edgeware | |
6 | */ | |
7 | ||
d4efbcd9 | 8 | /*----- Licensing notice --------------------------------------------------* |
6b033bc4 | 9 | * |
10 | * This file is part of the mLib utilities library. | |
11 | * | |
12 | * mLib is free software; you can redistribute it and/or modify | |
13 | * it under the terms of the GNU Library General Public License as | |
14 | * published by the Free Software Foundation; either version 2 of the | |
15 | * License, or (at your option) any later version. | |
d4efbcd9 | 16 | * |
6b033bc4 | 17 | * mLib is distributed in the hope that it will be useful, |
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | * GNU Library General Public License for more details. | |
d4efbcd9 | 21 | * |
6b033bc4 | 22 | * You should have received a copy of the GNU Library General Public |
23 | * License along with mLib; if not, write to the Free | |
24 | * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, | |
25 | * MA 02111-1307, USA. | |
26 | */ | |
27 | ||
c6e0eaf0 | 28 | #ifndef MLIB_BITS_H |
29 | #define MLIB_BITS_H | |
6b033bc4 | 30 | |
31 | #ifdef __cplusplus | |
32 | extern "C" { | |
33 | #endif | |
34 | ||
35 | /*----- Header files ------------------------------------------------------*/ | |
36 | ||
37 | #include <limits.h> | |
38 | #include <stddef.h> | |
31d0247c | 39 | #if __STDC_VERSION__ >= 199901 |
a6f4a484 | 40 | # include <stdint.h> |
41 | #endif | |
6b033bc4 | 42 | |
a23bab96 MW |
43 | #ifndef MLIB_COMPILER_H |
44 | # include "compiler.h" | |
45 | #endif | |
46 | ||
6b033bc4 | 47 | /*----- Decide on some types ----------------------------------------------*/ |
48 | ||
1f175471 | 49 | /* --- Make GNU C shut up --- */ |
50 | ||
51 | #if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 91) | |
52 | # define MLIB_BITS_EXTENSION __extension__ | |
53 | #else | |
54 | # define MLIB_BITS_EXTENSION | |
55 | #endif | |
56 | ||
6b033bc4 | 57 | /* --- Decide on a 32-bit type --- * |
58 | * | |
59 | * I want a type which is capable of expressing 32-bit numbers. Because some | |
60 | * implementations have 64-bit @long@s (infinitely preferable to the abortion | |
61 | * that is @long long@), using @unsigned long@ regardless is wasteful. So, | |
62 | * if @int@ appears to be good enough, then I'll go with that. | |
63 | */ | |
64 | ||
65 | #if UINT_MAX >= 0xffffffffu | |
66 | typedef unsigned int uint32; | |
67 | #else | |
68 | typedef unsigned long uint32; | |
69 | #endif | |
70 | ||
a6f4a484 | 71 | /* --- Decide on a 64-bit type --- * |
72 | * | |
73 | * The test is quite subtle. Think about it. Note that (at least on my | |
74 | * machine), the 32-bit macros are *much* faster than GCC's @long long@ | |
75 | * support. | |
76 | */ | |
77 | ||
78 | #if defined(ULONG_LONG_MAX) && !defined(ULLONG_MAX) | |
79 | # define ULLONG_MAX ULONG_LONG_MAX | |
80 | #endif | |
81 | ||
82 | #if UINT_MAX >> 31 > 0xffffffff | |
1f175471 | 83 | # define HAVE_UINT64 |
84 | typedef unsigned int uint64; | |
a6f4a484 | 85 | #elif ULONG_MAX >> 31 > 0xffffffff |
1f175471 | 86 | # define HAVE_UINT64 |
87 | typedef unsigned long uint64; | |
a6f4a484 | 88 | #elif defined(ULLONG_MAX) |
1f175471 | 89 | # define HAVE_UINT64 |
90 | MLIB_BITS_EXTENSION typedef unsigned long long uint64; | |
a6f4a484 | 91 | #endif |
92 | ||
93 | #ifdef DEBUG64 | |
94 | # undef HAVE_UINT64 | |
95 | #endif | |
96 | ||
97 | #ifdef HAVE_UINT64 | |
98 | typedef struct { uint64 i; } kludge64; | |
99 | #else | |
100 | typedef struct { uint32 hi, lo; } kludge64; | |
101 | #endif | |
102 | ||
6a0129ea | 103 | /* --- Decide on a 24-bit type --- */ |
104 | ||
105 | #if UINT_MAX >= 0x00ffffffu | |
106 | typedef unsigned int uint24; | |
107 | #else | |
108 | typedef unsigned long uint24; | |
109 | #endif | |
110 | ||
6b033bc4 | 111 | /* --- Decide on 16-bit and 8-bit types --- * |
112 | * | |
113 | * This is more for brevity than anything else. | |
114 | */ | |
115 | ||
116 | typedef unsigned short uint16; | |
9b5ac6ff | 117 | typedef unsigned char octet, uint8; |
6b033bc4 | 118 | |
119 | /* --- WARNING! --- * | |
120 | * | |
121 | * Never lose sight of the fact that the above types may be wider than the | |
122 | * names suggest. Some architectures have 32-bit @short@s for example. | |
123 | */ | |
124 | ||
125 | /*----- Macros ------------------------------------------------------------*/ | |
126 | ||
127 | /* --- Useful masks --- */ | |
128 | ||
129 | #define MASK8 0xffu | |
130 | #define MASK16 0xffffu | |
9b5ac6ff | 131 | #define MASK16_L MASK16 |
132 | #define MASK16_B MASK16 | |
6a0129ea | 133 | #define MASK24 0xffffffu |
9b5ac6ff | 134 | #define MASK24_L MASK24 |
135 | #define MASK24_B MASK24 | |
6b033bc4 | 136 | #define MASK32 0xffffffffu |
9b5ac6ff | 137 | #define MASK32_L MASK32 |
138 | #define MASK32_B MASK32 | |
6b033bc4 | 139 | |
a6f4a484 | 140 | #ifdef HAVE_UINT64 |
1f175471 | 141 | # define MASK64 MLIB_BITS_EXTENSION 0xffffffffffffffffu |
9b5ac6ff | 142 | # define MASK64_L MASK64 |
143 | # define MASK64_B MASK64 | |
a6f4a484 | 144 | #endif |
145 | ||
76a7638e | 146 | /* --- Sizes --- */ |
147 | ||
148 | #define SZ_8 1 | |
149 | #define SZ_16 2 | |
150 | #define SZ_16_L 2 | |
151 | #define SZ_16_B 2 | |
152 | #define SZ_24 3 | |
153 | #define SZ_24_L 3 | |
154 | #define SZ_24_B 3 | |
155 | #define SZ_32 4 | |
156 | #define SZ_32_L 4 | |
157 | #define SZ_32_B 4 | |
158 | ||
9b5ac6ff | 159 | #ifdef HAVE_UINT64 |
160 | # define SZ_64 8 | |
161 | # define SZ_64_L 8 | |
162 | # define SZ_64_B 8 | |
163 | #endif | |
164 | ||
165 | /* --- Type aliases --- */ | |
166 | ||
167 | #define TY_U8 octet | |
168 | #define TY_U16 uint16 | |
169 | #define TY_U16_L uint16 | |
170 | #define TY_U16_B uint16 | |
171 | #define TY_U24 uint24 | |
172 | #define TY_U24_L uint24 | |
173 | #define TY_U24_B uint24 | |
174 | #define TY_U32 uint32 | |
175 | #define TY_U32_L uint32 | |
176 | #define TY_U32_B uint32 | |
177 | ||
178 | #ifdef HAVE_UINT64 | |
179 | # define TY_U64 uint64 | |
180 | # define TY_U64_L uint64 | |
181 | # define TY_U64_B uint64 | |
182 | #endif | |
183 | ||
184 | /* --- List macros --- */ | |
185 | ||
186 | #ifdef HAVE_UINT64 | |
31d0247c | 187 | # define DOUINTCONV_64(_) \ |
9b5ac6ff | 188 | _(64, 64, 64) _(64, 64_L, 64l) _(64, 64_B, 64b) |
31d0247c | 189 | # define DOUINTSZ_64(_) _(64) |
9b5ac6ff | 190 | #else |
31d0247c MW |
191 | # define DOUINTCONV_64(_) |
192 | # define DOUINTSZ_64(_) | |
193 | #endif | |
194 | ||
195 | #define DOUINTCONV(_) \ | |
9b5ac6ff | 196 | _(8, 8, 8) \ |
197 | _(16, 16, 16) _(16, 16_L, 16l) _(16, 16_B, 16b) \ | |
198 | _(24, 24, 24) _(24, 24_L, 24l) _(24, 24_B, 24b) \ | |
31d0247c MW |
199 | _(32, 32, 32) _(32, 32_L, 32l) _(32, 32_B, 32b) \ |
200 | DOUINTCONV_64(_) | |
201 | #define DOUINTSZ(_) _(8) _(16) _(24) _(32) _DOUINTSZ_64(_) | |
9b5ac6ff | 202 | |
6b033bc4 | 203 | /* --- Type coercions --- */ |
204 | ||
b1a20bee MW |
205 | #define U8(x) ((octet)((x)&MASK8)) |
206 | #define U16(x) ((uint16)((x)&MASK16)) | |
207 | #define U24(x) ((uint24)((x)&MASK24)) | |
208 | #define U32(x) ((uint32)((x)&MASK32)) | |
6b033bc4 | 209 | |
a6f4a484 | 210 | #ifdef HAVE_UINT64 |
b1a20bee | 211 | # define U64(x) ((uint64)(x)&MASK64) |
a6f4a484 | 212 | # define U64_(d, x) ((d).i = U64(x).i) |
213 | #else | |
214 | # define U64_(d, x) ((d).hi = U32((x).hi), (d).lo = U32((x).lo)) | |
215 | #endif | |
216 | ||
6b033bc4 | 217 | /* --- Safe shifting macros --- */ |
218 | ||
b1a20bee MW |
219 | #define LSL8(v, s) U8(U8(v) << ((s)&7u)) |
220 | #define LSR8(v, s) U8(U8(v) >> ((s)&7u)) | |
221 | #define LSL16(v, s) U16(U16(v) << ((s)&15u)) | |
222 | #define LSR16(v, s) U16(U16(v) >> ((s)&15u)) | |
223 | #define LSL24(v, s) U24(U24(v) << ((s)%24u)) | |
224 | #define LSR24(v, s) U24(U24(v) >> ((s)%24u)) | |
225 | #define LSL32(v, s) U32(U32(v) << ((s)&31u)) | |
226 | #define LSR32(v, s) U32(U32(v) >> ((s)&31u)) | |
6b033bc4 | 227 | |
a6f4a484 | 228 | #ifdef HAVE_UINT64 |
b1a20bee MW |
229 | # define LSL64(v, s) U64(U64(v) << ((s)&63u)) |
230 | # define LSR64(v, s) U64(U64(v) >> ((s)&63u)) | |
a6f4a484 | 231 | # define LSL64_(d, v, s) ((d).i = LSL64((v).i, (s))) |
232 | # define LSR64_(d, v, s) ((d).i = LSR64((v).i, (s))) | |
233 | #else | |
234 | # define LSL64_(d, v, s) do { \ | |
b1a20bee | 235 | unsigned _s = (s)&63u; \ |
a6f4a484 | 236 | uint32 _l = (v).lo, _h = (v).hi; \ |
237 | kludge64 *_d = &(d); \ | |
238 | if (_s >= 32) { \ | |
239 | _d->hi = LSL32(_l, _s - 32u); \ | |
240 | _d->lo = 0; \ | |
241 | } else if (!_s) { \ | |
242 | _d->lo = _l; \ | |
243 | _d->hi = _h; \ | |
244 | } else { \ | |
245 | _d->hi = LSL32(_h, _s) | LSR32(_l, 32u - _s); \ | |
246 | _d->lo = LSL32(_l, _s); \ | |
247 | } \ | |
248 | } while (0) | |
249 | # define LSR64_(d, v, s) do { \ | |
b1a20bee | 250 | unsigned _s = (s)&63u; \ |
a6f4a484 | 251 | uint32 _l = (v).lo, _h = (v).hi; \ |
252 | kludge64 *_d = &(d); \ | |
253 | if (_s >= 32) { \ | |
254 | _d->lo = LSR32(_h, _s - 32u); \ | |
255 | _d->hi = 0; \ | |
256 | } else if (!_s) { \ | |
257 | _d->lo = _l; \ | |
258 | _d->hi = _h; \ | |
259 | } else { \ | |
260 | _d->lo = LSR32(_l, _s) | LSL32(_h, 32u - _s); \ | |
261 | _d->hi = LSR32(_h, _s); \ | |
262 | } \ | |
263 | } while (0) | |
264 | #endif | |
265 | ||
6b033bc4 | 266 | /* --- Rotation macros --- */ |
267 | ||
bc9f60b6 | 268 | #define ROL8(v, s) (LSL8((v), (s)) | (LSR8((v), 8u - (s)))) |
269 | #define ROR8(v, s) (LSR8((v), (s)) | (LSL8((v), 8u - (s)))) | |
270 | #define ROL16(v, s) (LSL16((v), (s)) | (LSR16((v), 16u - (s)))) | |
271 | #define ROR16(v, s) (LSR16((v), (s)) | (LSL16((v), 16u - (s)))) | |
6a0129ea | 272 | #define ROL24(v, s) (LSL24((v), (s)) | (LSR24((v), 24u - (s)))) |
273 | #define ROR24(v, s) (LSR24((v), (s)) | (LSL24((v), 24u - (s)))) | |
bc9f60b6 | 274 | #define ROL32(v, s) (LSL32((v), (s)) | (LSR32((v), 32u - (s)))) |
275 | #define ROR32(v, s) (LSR32((v), (s)) | (LSL32((v), 32u - (s)))) | |
6b033bc4 | 276 | |
a6f4a484 | 277 | #ifdef HAVE_UINT64 |
278 | # define ROL64(v, s) (LSL64((v), (s)) | (LSR64((v), 64u - (s)))) | |
279 | # define ROR64(v, s) (LSR64((v), (s)) | (LSL64((v), 64u - (s)))) | |
280 | # define ROL64_(d, v, s) ((d).i = ROL64((v).i, (s))) | |
281 | # define ROR64_(d, v, s) ((d).i = ROR64((v).i, (s))) | |
282 | #else | |
283 | # define ROL64_(d, v, s) do { \ | |
b1a20bee | 284 | unsigned _s = (s)&63u; \ |
a6f4a484 | 285 | uint32 _l = (v).lo, _h = (v).hi; \ |
286 | kludge64 *_d = &(d); \ | |
5892fd39 | 287 | if (_s > 32) { \ |
a6f4a484 | 288 | _d->hi = LSL32(_l, _s - 32u) | LSR32(_h, 64u - _s); \ |
289 | _d->lo = LSL32(_h, _s - 32u) | LSR32(_l, 64u - _s); \ | |
290 | } else if (!_s) { \ | |
291 | _d->lo = _l; \ | |
292 | _d->hi = _h; \ | |
5892fd39 | 293 | } else if (_s == 32) { \ |
294 | _d->lo = _h; \ | |
295 | _d->hi = _l; \ | |
a6f4a484 | 296 | } else { \ |
297 | _d->hi = LSL32(_h, _s) | LSR32(_l, 32u - _s); \ | |
298 | _d->lo = LSL32(_l, _s) | LSR32(_h, 32u - _s); \ | |
299 | } \ | |
300 | } while (0) | |
301 | # define ROR64_(d, v, s) do { \ | |
b1a20bee | 302 | unsigned _s = (s)&63u; \ |
a6f4a484 | 303 | uint32 _l = (v).lo, _h = (v).hi; \ |
304 | kludge64 *_d = &(d); \ | |
5892fd39 | 305 | if (_s > 32) { \ |
a6f4a484 | 306 | _d->hi = LSR32(_l, _s - 32u) | LSL32(_h, 64u - _s); \ |
307 | _d->lo = LSR32(_h, _s - 32u) | LSL32(_l, 64u - _s); \ | |
308 | } else if (!_s) { \ | |
309 | _d->lo = _l; \ | |
310 | _d->hi = _h; \ | |
5892fd39 | 311 | } else if (_s == 32) { \ |
312 | _d->lo = _h; \ | |
313 | _d->hi = _l; \ | |
a6f4a484 | 314 | } else { \ |
315 | _d->hi = LSR32(_h, _s) | LSL32(_l, 32u - _s); \ | |
316 | _d->lo = LSR32(_l, _s) | LSL32(_h, 32u - _s); \ | |
317 | } \ | |
318 | } while (0) | |
319 | #endif | |
320 | ||
374bb459 MW |
321 | /* --- Endianness swapping --- */ |
322 | ||
c91413e6 | 323 | #if GCC_VERSION_P(4, 8) || CLANG_VERSION_P(3, 2) |
a23bab96 MW |
324 | # define ENDSWAP16(x) ((uint16)__builtin_bswap16(x)) |
325 | #endif | |
c91413e6 | 326 | #if GCC_VERSION_P(4, 3) || CLANG_VERSION_P(3, 2) |
a23bab96 MW |
327 | # define ENDSWAP32(x) ((uint32)__builtin_bswap32(x)) |
328 | #endif | |
c91413e6 | 329 | #if (GCC_VERSION_P(4, 3) || CLANG_VERSION_P(3, 2)) && defined(HAVE_UINT64) |
a23bab96 MW |
330 | # define ENDSWAP64(x) ((uint64)__builtin_bswap64(x)) |
331 | #endif | |
332 | ||
374bb459 MW |
333 | #ifndef ENDSWAP8 |
334 | # define ENDSWAP8(x) U8(x) | |
335 | #endif | |
336 | #ifndef ENDSWAP16 | |
337 | # define ENDSWAP16(x) \ | |
338 | ((((uint16)(x) >> 8)&0xff) | \ | |
339 | (((uint16)(x)&0xff) << 8)) | |
340 | #endif | |
341 | #ifndef ENDSWAP24 | |
342 | # define ENDSWAP24(x) \ | |
343 | ((((uint24)(x) >> 16)&0xff) | \ | |
344 | ((uint24)(x)&0xff00) | \ | |
345 | ((uint24)((x)&0xff) << 16)) | |
346 | #endif | |
347 | #ifndef ENDSWAP32 | |
348 | # define ENDSWAP32(x) \ | |
349 | (ENDSWAP16(((uint32)(x) >> 16)&0xffff) | \ | |
350 | ((uint32)ENDSWAP16((x)&0xffff) << 16)) | |
351 | #endif | |
352 | #if defined(HAVE_UINT64) && !defined(ENDSWAP64) | |
353 | # define ENDSWAP64(x) \ | |
354 | (ENDSWAP32(((uint64)(x) >> 32)&0xffffffff) | \ | |
355 | ((uint64)ENDSWAP32((x)&0xffffffff) << 32)) | |
356 | #endif | |
357 | #ifdef HAVE_UINT64 | |
358 | # define ENDSWAP64_(z, x) \ | |
359 | ((z).i = ENDSWAP64((x).i)) | |
360 | #else | |
361 | # define ENDSWAP64_(z, x) \ | |
362 | ((z).lo = ENDSWAP32((x).hi), \ | |
363 | (z).hi = ENDSWAP32((x).lo)) | |
364 | #endif | |
365 | ||
366 | #define MLIB_LITTLE_ENDIAN 1234 | |
367 | #define MLIB_BIG_ENDIAN 4321 | |
368 | #if defined(__ORDER_LITTLE_ENDIAN__) && \ | |
369 | __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ | |
370 | # define MLIB_BYTE_ORDER MLIB_LITTLE_ENDIAN | |
371 | #elif defined(__ORDER_BIG_ENDIAN__) && \ | |
372 | __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ | |
373 | # define MLIB_BYTE_ORDER MLIB_BIG_ENDIAN | |
374 | #endif | |
375 | ||
376 | #if MLIB_BYTE_ORDER == MLIB_LITTLE_ENDIAN | |
377 | # define HTOL16(x) (x) | |
378 | # define LTOH16(x) (x) | |
379 | # define HTOB16(x) ENDSWAP16(x) | |
380 | # define BTOH16(x) ENDSWAP16(x) | |
381 | # define HTOL24(x) (x) | |
382 | # define LTOH24(x) (x) | |
383 | # define HTOB24(x) ENDSWAP24(x) | |
384 | # define BTOH24(x) ENDSWAP24(x) | |
385 | # define HTOL32(x) (x) | |
386 | # define LTOH32(x) (x) | |
387 | # define HTOB32(x) ENDSWAP32(x) | |
388 | # define BTOH32(x) ENDSWAP32(x) | |
389 | # ifdef HAVE_UINT64 | |
390 | # define HTOL64(x) (x) | |
391 | # define LTOH64(x) (x) | |
392 | # define HTOB64(x) ENDSWAP64(x) | |
393 | # define BTOH64(x) ENDSWAP64(x) | |
394 | # endif | |
395 | # define HTOL64_(z, x) ASSIGN64(z, x) | |
396 | # define LTOH64_(z, x) ASSIGN64(z, x) | |
397 | # define HTOB64_(z, x) ENDSWAP64_(z, x) | |
398 | # define BTOH64_(z, x) ENDSWAP64_(z, x) | |
399 | #elif MLIB_BYTE_ORDER == MLIB_BIG_ENDIAN | |
400 | # define HTOL16(x) ENDSWAP16(x) | |
401 | # define LTOH16(x) ENDSWAP16(x) | |
402 | # define HTOB16(x) (x) | |
403 | # define BTOH16(x) (x) | |
404 | # define HTOL24(x) ENDSWAP24(x) | |
405 | # define LTOH24(x) ENDSWAP24(x) | |
406 | # define HTOB24(x) (x) | |
407 | # define BTOH24(x) (x) | |
408 | # define HTOL32(x) ENDSWAP32(x) | |
409 | # define LTOH32(x) ENDSWAP32(x) | |
410 | # define HTOB32(x) (x) | |
411 | # define BTOH32(x) (x) | |
412 | # ifdef HAVE_UINT64 | |
413 | # define HTOL64(x) ENDSWAP64(x) | |
414 | # define LTOH64(x) ENDSWAP64(x) | |
415 | # define HTOB64(x) (x) | |
416 | # define BTOH64(x) (x) | |
374bb459 MW |
417 | # endif |
418 | # define HTOL64_(z, x) ENDSWAP64_(z, x) | |
419 | # define LTOH64_(z, x) ENDSWAP64_(z, x) | |
420 | # define HTOB64_(z, x) ASSIGN64(z, x) | |
421 | # define BTOH64_(z, x) ASSIGN64(z, x) | |
422 | #endif | |
423 | ||
a23bab96 MW |
424 | /* --- Unaligned access (GCC-specific) --- */ |
425 | ||
c91413e6 | 426 | #if (GCC_VERSION_P(3, 3) || CLANG_VERSION_P(3, 0)) && CHAR_BIT == 8 |
a23bab96 MW |
427 | # define MLIB_MISALIGNED __attribute__((aligned(1), may_alias)) |
428 | # if __SIZEOF_SHORT__ == 2 | |
429 | typedef MLIB_MISALIGNED unsigned short misaligned_uint16; | |
430 | # define RAW16(p) (*(misaligned_uint16 *)(p)) | |
431 | # endif | |
432 | # if __SIZEOF_INT__ == 4 | |
433 | typedef MLIB_MISALIGNED unsigned int misaligned_uint32; | |
434 | # define RAW32(p) (*(misaligned_uint32 *)(p)) | |
435 | # elif __SIZEOF_LONG__ == 4 | |
436 | typedef MLIB_MISALIGNED unsigned long misaligned_uint32; | |
437 | # define RAW32(p) (*(misaligned_uint32 *)(p)) | |
438 | # endif | |
439 | # if __SIZEOF_LONG__ == 8 | |
440 | typedef MLIB_MISALIGNED unsigned long misaligned_uint64; | |
441 | # define RAW64(p) (*(misaligned_uint64 *)(p)) | |
442 | # elif __SIZEOF_LONG_LONG__ == 8 | |
443 | typedef MLIB_MISALIGNED unsigned long long misaligned_uint64; | |
444 | # define RAW64(p) (*(misaligned_uint64 *)(p)) | |
445 | # endif | |
446 | #endif | |
447 | ||
6b033bc4 | 448 | /* --- Storage and retrieval --- */ |
449 | ||
a23bab96 MW |
450 | #if defined(RAW16) && defined(LTOH16) |
451 | # define LOAD16_L(p) LTOH16(RAW16(p)) | |
452 | #endif | |
453 | #if defined(RAW16) && defined(HTOL16) | |
454 | # define STORE16_L(p, x) (RAW16(p) = HTOL16(x)) | |
455 | #endif | |
456 | #if defined(RAW16) && defined(BTOH16) | |
457 | # define LOAD16_B(p) BTOH16(RAW16(p)) | |
458 | #endif | |
459 | #if defined(RAW16) && defined(HTOB16) | |
460 | # define STORE16_B(p, x) (RAW16(p) = HTOB16(x)) | |
461 | #endif | |
462 | ||
463 | #if defined(RAW32) && defined(LTOH32) | |
464 | # define LOAD32_L(p) LTOH32(RAW32(p)) | |
465 | #endif | |
466 | #if defined(RAW32) && defined(HTOL32) | |
467 | # define STORE32_L(p, x) (RAW32(p) = HTOL32(x)) | |
468 | #endif | |
469 | #if defined(RAW32) && defined(BTOH32) | |
470 | # define LOAD32_B(p) BTOH32(RAW32(p)) | |
471 | #endif | |
472 | #if defined(RAW32) && defined(HTOB32) | |
473 | # define STORE32_B(p, x) (RAW32(p) = HTOB32(x)) | |
474 | #endif | |
475 | ||
476 | #if defined(RAW64) && defined(LTOH64) | |
477 | # define LOAD64_L(p) LTOH64(RAW64(p)) | |
478 | #endif | |
479 | #if defined(RAW64) && defined(HTOL64) | |
480 | # define STORE64_L(p, x) (RAW64(p) = HTOL64(x)) | |
481 | #endif | |
482 | #if defined(RAW64) && defined(BTOH64) | |
483 | # define LOAD64_B(p) BTOH64(RAW64(p)) | |
484 | #endif | |
485 | #if defined(RAW64) && defined(HTOB64) | |
486 | # define STORE64_B(p, x) (RAW64(p) = HTOB64(x)) | |
487 | #endif | |
488 | ||
b1a20bee | 489 | #define GETBYTE(p, o) (((octet *)(p))[o]&MASK8) |
6b033bc4 | 490 | #define PUTBYTE(p, o, v) (((octet *)(p))[o] = U8((v))) |
491 | ||
492 | #define LOAD8(p) (GETBYTE((p), 0)) | |
493 | #define STORE8(p, v) (PUTBYTE((p), 0, (v))) | |
494 | ||
897c58ad MW |
495 | #ifndef LOAD16_B |
496 | # define LOAD16_B(p) | |
497 | (((uint16)GETBYTE((p), 0) << 8) | \ | |
498 | ((uint16)GETBYTE((p), 1) << 0)) | |
499 | #endif | |
500 | #ifndef LOAD16_L | |
501 | # define LOAD16_L(p) \ | |
502 | (((uint16)GETBYTE((p), 0) << 0) | \ | |
503 | ((uint16)GETBYTE((p), 1) << 8)) | |
504 | #endif | |
6b033bc4 | 505 | #define LOAD16(p) LOAD16_B((p)) |
506 | ||
897c58ad MW |
507 | #ifndef STORE16_B |
508 | # define STORE16_B(p, v) \ | |
509 | (PUTBYTE((p), 0, (uint16)(v) >> 8), \ | |
510 | PUTBYTE((p), 1, (uint16)(v) >> 0)) | |
511 | #endif | |
512 | #ifndef STORE16_L | |
513 | # define STORE16_L(p, v) \ | |
514 | (PUTBYTE((p), 0, (uint16)(v) >> 0), \ | |
515 | PUTBYTE((p), 1, (uint16)(v) >> 8)) | |
516 | #endif | |
6b033bc4 | 517 | #define STORE16(p, v) STORE16_B((p), (v)) |
518 | ||
897c58ad MW |
519 | #ifndef LOAD24_B |
520 | # define LOAD24_B(p) \ | |
521 | (((uint24)GETBYTE((p), 0) << 16) | \ | |
522 | ((uint24)LOAD16_B((octet *)(p) + 1) << 0)) | |
523 | #endif | |
524 | #ifndef LOAD24_L | |
525 | # define LOAD24_L(p) \ | |
526 | (((uint24)LOAD16_L((octet *)(p) + 0) << 0) | \ | |
527 | ((uint24)GETBYTE((p), 2) << 16)) | |
528 | #endif | |
6a0129ea | 529 | #define LOAD24(p) LOAD24_B((p)) |
530 | ||
897c58ad MW |
531 | #ifndef STORE24_B |
532 | # define STORE24_B(p, v) \ | |
533 | (PUTBYTE((p), 0, (uint24)(v) >> 16), \ | |
534 | STORE16_B((octet *)(p) + 1, (uint24)(v) >> 0)) | |
535 | #endif | |
536 | #ifndef STORE24_L | |
537 | # define STORE24_L(p, v) \ | |
538 | (STORE16_L((octet *)(p) + 0, (uint24)(v) >> 0), \ | |
539 | PUTBYTE((p), 2, (uint24)(v) >> 16)) | |
540 | #endif | |
6a0129ea | 541 | #define STORE24(p, v) STORE24_B((p), (v)) |
542 | ||
897c58ad MW |
543 | #ifndef LOAD32_B |
544 | # define LOAD32_B(p) \ | |
545 | (((uint32)LOAD16_B((octet *)(p) + 0) << 16) | \ | |
546 | ((uint32)LOAD16_B((octet *)(p) + 2) << 0)) | |
547 | #endif | |
548 | #ifndef LOAD32_L | |
549 | # define LOAD32_L(p) \ | |
550 | (((uint32)LOAD16_L((octet *)(p) + 0) << 0) | \ | |
551 | ((uint32)LOAD16_L((octet *)(p) + 2) << 16)) | |
552 | #endif | |
6b033bc4 | 553 | #define LOAD32(p) LOAD32_B((p)) |
554 | ||
897c58ad MW |
555 | #ifndef STORE32_B |
556 | # define STORE32_B(p, v) \ | |
557 | (STORE16_B((octet *)(p) + 0, (uint32)(v) >> 16), \ | |
558 | STORE16_B((octet *)(p) + 2, (uint32)(v) >> 0)) | |
559 | #endif | |
560 | #ifndef STORE32_L | |
561 | # define STORE32_L(p, v) \ | |
562 | (STORE16_L((octet *)(p) + 0, (uint32)(v) >> 0), \ | |
563 | STORE16_L((octet *)(p) + 2, (uint32)(v) >> 16)) | |
564 | #endif | |
6b033bc4 | 565 | #define STORE32(p, v) STORE32_B((p), (v)) |
566 | ||
a6f4a484 | 567 | #ifdef HAVE_UINT64 |
568 | ||
897c58ad MW |
569 | # ifndef LOAD64_B |
570 | # define LOAD64_B(p) \ | |
571 | (((uint64)LOAD32_B((octet *)(p) + 0) << 32) | \ | |
572 | ((uint64)LOAD32_B((octet *)(p) + 4) << 0)) | |
573 | # endif | |
574 | # ifndef LOAD64_L | |
575 | # define LOAD64_L(p) \ | |
576 | (((uint64)LOAD32_L((octet *)(p) + 0) << 0) | \ | |
577 | ((uint64)LOAD32_L((octet *)(p) + 4) << 32)) | |
578 | # endif | |
a6f4a484 | 579 | # define LOAD64(p) LOAD64_B((p)) |
580 | # define LOAD64_B_(d, p) ((d).i = LOAD64_B((p))) | |
581 | # define LOAD64_L_(d, p) ((d).i = LOAD64_L((p))) | |
582 | # define LOAD64_(d, p) LOAD64_B_((d), (p)) | |
583 | ||
897c58ad MW |
584 | # ifndef STORE64_B |
585 | # define STORE64_B(p, v) \ | |
586 | (STORE32_B((octet *)(p) + 0, (uint64)(v) >> 32), \ | |
587 | STORE32_B((octet *)(p) + 4, (uint64)(v) >> 0)) | |
588 | # endif | |
589 | # ifndef STORE64_L | |
590 | # define STORE64_L(p, v) \ | |
591 | (STORE32_L((octet *)(p) + 0, (uint64)(v) >> 0), \ | |
592 | STORE32_L((octet *)(p) + 4, (uint64)(v) >> 32)) | |
593 | # endif | |
a6f4a484 | 594 | # define STORE64(p, v) STORE64_B((p), (v)) |
595 | # define STORE64_B_(p, v) STORE64_B((p), (v).i) | |
596 | # define STORE64_L_(p, v) STORE64_L((p), (v).i) | |
597 | # define STORE64_(p, v) STORE64_B_((p), (v)) | |
598 | ||
599 | #else | |
600 | ||
601 | # define LOAD64_B_(d, p) \ | |
8fb5ab99 MW |
602 | ((d).hi = LOAD32_B((octet *)(p) + 0), \ |
603 | (d).lo = LOAD32_B((octet *)(p) + 4)) | |
a6f4a484 | 604 | # define LOAD64_L_(d, p) \ |
8fb5ab99 MW |
605 | ((d).lo = LOAD32_L((octet *)(p) + 0), \ |
606 | (d).hi = LOAD32_L((octet *)(p) + 4)) | |
a6f4a484 | 607 | # define LOAD64_(d, p) LOAD64_B_((d), (p)) |
608 | ||
609 | # define STORE64_B_(p, v) \ | |
8fb5ab99 MW |
610 | (STORE32_B((octet *)(p) + 0, (v).hi), \ |
611 | STORE32_B((octet *)(p) + 4, (v).lo)) | |
a6f4a484 | 612 | # define STORE64_L_(p, v) \ |
8fb5ab99 MW |
613 | (STORE32_L((octet *)(p) + 0, (v).lo), \ |
614 | STORE32_L((octet *)(p) + 4, (v).hi)) | |
a6f4a484 | 615 | # define STORE64_(p, v) STORE64_B_((p), (v)) |
616 | ||
617 | #endif | |
618 | ||
619 | /* --- Other operations on 64-bit integers --- */ | |
620 | ||
621 | #ifdef HAVE_UINT64 | |
b1a20bee | 622 | # define SET64(d, h, l) ((d).i = ((uint64)(U32(h)) << 32) | U32(l)) |
a6f4a484 | 623 | # define ASSIGN64(d, x) ((d).i = U64((x))) |
624 | # define HI64(x) U32((x).i >> 32) | |
625 | # define LO64(x) U32((x).i) | |
3b7cea93 | 626 | # define GET64(t, x) ((t)(x).i) |
b1a20bee | 627 | # define SETBYTE64(z, x, j) ((z).i |= (uint64)U8(x) << 8*(j)) |
a6f4a484 | 628 | #else |
629 | # define SET64(d, h, l) ((d).hi = U32(h), (d).lo = U32(l)) | |
630 | # define ASSIGN64(d, x) \ | |
b1a20bee | 631 | ((d).hi = ((x&~MASK32) >> 16) >> 16, (d).lo = U32(x)) |
a6f4a484 | 632 | # define HI64(x) U32((x).hi) |
633 | # define LO64(x) U32((x).lo) | |
b1a20bee MW |
634 | # define GET64(t, x) (((((t)HI64(x) << 16) << 16)&~MASK32) | (t)LO64(x)) |
635 | # define SETBYTE64(z, x, j) \ | |
636 | ((j) < 4 ? (z).lo |= (uint32)U8(x) << 8*(j) \ | |
637 | : (z).hi |= (uint32)U8(x) << 8*((j) - 4)) | |
a6f4a484 | 638 | #endif |
639 | ||
640 | #ifdef HAVE_UINT64 | |
b1a20bee | 641 | # define AND64(d, x, y) ((d).i = (x).i&(y).i) |
a6f4a484 | 642 | # define OR64(d, x, y) ((d).i = (x).i | (y).i) |
643 | # define XOR64(d, x, y) ((d).i = (x).i ^ (y).i) | |
644 | # define CPL64(d, x) ((d).i = ~(x).i) | |
645 | # define ADD64(d, x, y) ((d).i = (x).i + (y).i) | |
646 | # define SUB64(d, x, y) ((d).i = (x).i - (y).i) | |
647 | # define CMP64(x, op, y) ((x).i op (y).i) | |
b1a20bee | 648 | # define ZERO64(x) ((x).i == 0) |
a6f4a484 | 649 | #else |
b1a20bee | 650 | # define AND64(d, x, y) ((d).lo = (x).lo&(y).lo, (d).hi = (x).hi&(y).hi) |
a6f4a484 | 651 | # define OR64(d, x, y) ((d).lo = (x).lo | (y).lo, (d).hi = (x).hi | (y).hi) |
652 | # define XOR64(d, x, y) ((d).lo = (x).lo ^ (y).lo, (d).hi = (x).hi ^ (y).hi) | |
653 | # define CPL64(d, x) ((d).lo = ~(x).lo, (d).hi = ~(x).hi) | |
654 | # define ADD64(d, x, y) do { \ | |
655 | uint32 _x = U32((x).lo + (y).lo); \ | |
656 | (d).hi = (x).hi + (y).hi + (_x < (x).lo); \ | |
657 | (d).lo = _x; \ | |
658 | } while (0) | |
659 | # define SUB64(d, x, y) do { \ | |
660 | uint32 _x = U32((x).lo - (y).lo); \ | |
661 | (d).hi = (x).hi - (y).hi - (_x > (x).lo); \ | |
662 | (d).lo = _x; \ | |
663 | } while (0) | |
664 | # define CMP64(x, op, y) \ | |
665 | ((x).hi == (y).hi ? (x).lo op (y).lo : (x).hi op (y).hi) | |
666 | # define ZERO64(x) ((x).lo == 0 && (x).hi == 0) | |
667 | #endif | |
668 | ||
91928c79 | 669 | /* --- Storing integers in tables --- */ |
670 | ||
671 | #ifdef HAVE_UINT64 | |
672 | # define X64(x, y) { 0x##x##y } | |
673 | #else | |
674 | # define X64(x, y) { 0x##x, 0x##y } | |
675 | #endif | |
d4efbcd9 | 676 | |
6b033bc4 | 677 | /*----- That's all, folks -------------------------------------------------*/ |
678 | ||
679 | #ifdef __cplusplus | |
680 | } | |
681 | #endif | |
682 | ||
683 | #endif |