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@@@ fltfmt mess
[mLib] / utils / bits.h
1 /* -*-c-*-
2 *
3 * Portable bit-level manipulation macros
4 *
5 * (c) 1998 Straylight/Edgeware
6 */
7
8 /*----- Licensing notice --------------------------------------------------*
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.
16 *
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.
21 *
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
28 #ifndef MLIB_BITS_H
29 #define MLIB_BITS_H
30
31 #ifdef __cplusplus
32 extern "C" {
33 #endif
34
35 /*----- Header files ------------------------------------------------------*/
36
37 #include <limits.h>
38 #include <stddef.h>
39 #if __STDC_VERSION__ >= 199901
40 # include <stdint.h>
41 #endif
42
43 #ifndef MLIB_COMPILER_H
44 # include "compiler.h"
45 #endif
46
47 /*----- Decide on some types ----------------------------------------------*/
48
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
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
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
83 # define HAVE_UINT64
84 typedef unsigned int uint64;
85 #elif ULONG_MAX >> 31 > 0xffffffff
86 # define HAVE_UINT64
87 typedef unsigned long uint64;
88 #elif defined(ULLONG_MAX)
89 # define HAVE_UINT64
90 MLIB_BITS_EXTENSION typedef unsigned long long uint64;
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
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
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;
117 typedef unsigned char octet, uint8;
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
131 #define MASK16_L MASK16
132 #define MASK16_B MASK16
133 #define MASK24 0xffffffu
134 #define MASK24_L MASK24
135 #define MASK24_B MASK24
136 #define MASK32 0xffffffffu
137 #define MASK32_L MASK32
138 #define MASK32_B MASK32
139
140 #ifdef HAVE_UINT64
141 # define MASK64 MLIB_BITS_EXTENSION 0xffffffffffffffffu
142 # define MASK64_L MASK64
143 # define MASK64_B MASK64
144 #endif
145
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
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
187 # define DOUINTCONV_64(_) \
188 _(64, 64, 64) _(64, 64_L, 64l) _(64, 64_B, 64b)
189 # define DOUINTSZ_64(_) _(64)
190 #else
191 # define DOUINTCONV_64(_)
192 # define DOUINTSZ_64(_)
193 #endif
194
195 #define DOUINTCONV(_) \
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) \
199 _(32, 32, 32) _(32, 32_L, 32l) _(32, 32_B, 32b) \
200 DOUINTCONV_64(_)
201 #define DOUINTSZ(_) _(8) _(16) _(24) _(32) _DOUINTSZ_64(_)
202
203 /* --- Type coercions --- */
204
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))
209
210 #ifdef HAVE_UINT64
211 # define U64(x) ((uint64)(x)&MASK64)
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
217 /* --- Safe shifting macros --- */
218
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))
227
228 #ifdef HAVE_UINT64
229 # define LSL64(v, s) U64(U64(v) << ((s)&63u))
230 # define LSR64(v, s) U64(U64(v) >> ((s)&63u))
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 { \
235 unsigned _s = (s)&63u; \
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 { \
250 unsigned _s = (s)&63u; \
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
266 /* --- Rotation macros --- */
267
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))))
272 #define ROL24(v, s) (LSL24((v), (s)) | (LSR24((v), 24u - (s))))
273 #define ROR24(v, s) (LSR24((v), (s)) | (LSL24((v), 24u - (s))))
274 #define ROL32(v, s) (LSL32((v), (s)) | (LSR32((v), 32u - (s))))
275 #define ROR32(v, s) (LSR32((v), (s)) | (LSL32((v), 32u - (s))))
276
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 { \
284 unsigned _s = (s)&63u; \
285 uint32 _l = (v).lo, _h = (v).hi; \
286 kludge64 *_d = &(d); \
287 if (_s > 32) { \
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; \
293 } else if (_s == 32) { \
294 _d->lo = _h; \
295 _d->hi = _l; \
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 { \
302 unsigned _s = (s)&63u; \
303 uint32 _l = (v).lo, _h = (v).hi; \
304 kludge64 *_d = &(d); \
305 if (_s > 32) { \
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; \
311 } else if (_s == 32) { \
312 _d->lo = _h; \
313 _d->hi = _l; \
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
321 /* --- Endianness swapping --- */
322
323 #if GCC_VERSION_P(4, 8) || CLANG_VERSION_P(3, 2)
324 # define ENDSWAP16(x) ((uint16)__builtin_bswap16(x))
325 #endif
326 #if GCC_VERSION_P(4, 3) || CLANG_VERSION_P(3, 2)
327 # define ENDSWAP32(x) ((uint32)__builtin_bswap32(x))
328 #endif
329 #if (GCC_VERSION_P(4, 3) || CLANG_VERSION_P(3, 2)) && defined(HAVE_UINT64)
330 # define ENDSWAP64(x) ((uint64)__builtin_bswap64(x))
331 #endif
332
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)
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
424 /* --- Unaligned access (GCC-specific) --- */
425
426 #if (GCC_VERSION_P(3, 3) || CLANG_VERSION_P(3, 0)) && CHAR_BIT == 8
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
448 /* --- Storage and retrieval --- */
449
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
489 #define GETBYTE(p, o) (((octet *)(p))[o]&MASK8)
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
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
505 #define LOAD16(p) LOAD16_B((p))
506
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
517 #define STORE16(p, v) STORE16_B((p), (v))
518
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
529 #define LOAD24(p) LOAD24_B((p))
530
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
541 #define STORE24(p, v) STORE24_B((p), (v))
542
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
553 #define LOAD32(p) LOAD32_B((p))
554
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
565 #define STORE32(p, v) STORE32_B((p), (v))
566
567 #ifdef HAVE_UINT64
568
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
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
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
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) \
602 ((d).hi = LOAD32_B((octet *)(p) + 0), \
603 (d).lo = LOAD32_B((octet *)(p) + 4))
604 # define LOAD64_L_(d, p) \
605 ((d).lo = LOAD32_L((octet *)(p) + 0), \
606 (d).hi = LOAD32_L((octet *)(p) + 4))
607 # define LOAD64_(d, p) LOAD64_B_((d), (p))
608
609 # define STORE64_B_(p, v) \
610 (STORE32_B((octet *)(p) + 0, (v).hi), \
611 STORE32_B((octet *)(p) + 4, (v).lo))
612 # define STORE64_L_(p, v) \
613 (STORE32_L((octet *)(p) + 0, (v).lo), \
614 STORE32_L((octet *)(p) + 4, (v).hi))
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
622 # define SET64(d, h, l) ((d).i = ((uint64)(U32(h)) << 32) | U32(l))
623 # define ASSIGN64(d, x) ((d).i = U64((x)))
624 # define HI64(x) U32((x).i >> 32)
625 # define LO64(x) U32((x).i)
626 # define GET64(t, x) ((t)(x).i)
627 # define SETBYTE64(z, x, j) ((z).i |= (uint64)U8(x) << 8*(j))
628 #else
629 # define SET64(d, h, l) ((d).hi = U32(h), (d).lo = U32(l))
630 # define ASSIGN64(d, x) \
631 ((d).hi = ((x&~MASK32) >> 16) >> 16, (d).lo = U32(x))
632 # define HI64(x) U32((x).hi)
633 # define LO64(x) U32((x).lo)
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))
638 #endif
639
640 #ifdef HAVE_UINT64
641 # define AND64(d, x, y) ((d).i = (x).i&(y).i)
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)
648 # define ZERO64(x) ((x).i == 0)
649 #else
650 # define AND64(d, x, y) ((d).lo = (x).lo&(y).lo, (d).hi = (x).hi&(y).hi)
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
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
676
677 /*----- That's all, folks -------------------------------------------------*/
678
679 #ifdef __cplusplus
680 }
681 #endif
682
683 #endif
mLib utilities library