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utils/bits.h: Support compiler magic for unaligned loads and stores.
[mLib] / utils / bits.h
CommitLineData
6b033bc4 1/* -*-c-*-
2 *
6b033bc4 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>
a6f4a484 39#if __STDC_VERSION__ >= 199900l
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
116typedef unsigned short uint16;
9b5ac6ff 117typedef 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
187# define DOUINTCONV(_) \
188 _(8, 8, 8) \
189 _(16, 16, 16) _(16, 16_L, 16l) _(16, 16_B, 16b) \
190 _(24, 24, 24) _(24, 24_L, 24l) _(24, 24_B, 24b) \
191 _(32, 32, 32) _(32, 32_L, 32l) _(32, 32_B, 32b) \
192 _(64, 64, 64) _(64, 64_L, 64l) _(64, 64_B, 64b)
5ce3df29 193# define DOUINTSZ(_) _(8) _(16) _(24) _(32) _(64)
9b5ac6ff 194#else
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)
5ce3df29 200# define DOUINTSZ(_) _(8) _(16) _(24) _(32)
9b5ac6ff 201#endif
202
6b033bc4 203/* --- Type coercions --- */
204
205#define U8(x) ((octet)((x) & MASK8))
206#define U16(x) ((uint16)((x) & MASK16))
6a0129ea 207#define U24(x) ((uint24)((x) & MASK24))
6b033bc4 208#define U32(x) ((uint32)((x) & MASK32))
209
a6f4a484 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
6b033bc4 217/* --- Safe shifting macros --- */
218
bc9f60b6 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))
6a0129ea 223#define LSL24(v, s) U24(U24(v) << ((s) % 24u))
224#define LSR24(v, s) U24(U24(v) >> ((s) % 24u))
bc9f60b6 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
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
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 { \
284 unsigned _s = (s) & 63u; \
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 { \
302 unsigned _s = (s) & 63u; \
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
a23bab96
MW		 323#if GCC_VERSION_P(4, 8)
324# define ENDSWAP16(x) ((uint16)__builtin_bswap16(x))
325#endif
326#if GCC_VERSION_P(4, 3)
327# define ENDSWAP32(x) ((uint32)__builtin_bswap32(x))
328#endif
329#if GCC_VERSION_P(4, 3) && defined(HAVE_UINT64)
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)
417# define HTOL64_(z, x) ENDSWAP64_(z, x)
418# define LTOH64_(z, x) ENDSWAP64_(z, x)
419# define HTOB64_(z, x) ((z).i = (x).i)
420# define BTOH64_(z, x) ((z).i = (x).i)
421# endif
422# define HTOL64_(z, x) ENDSWAP64_(z, x)
423# define LTOH64_(z, x) ENDSWAP64_(z, x)
424# define HTOB64_(z, x) ASSIGN64(z, x)
425# define BTOH64_(z, x) ASSIGN64(z, x)
426#endif
427
a23bab96
MW		 428/* --- Unaligned access (GCC-specific) --- */
429
430#if GCC_VERSION_P(3, 3) && CHAR_BIT == 8
431# define MLIB_MISALIGNED __attribute__((aligned(1), may_alias))
432# if __SIZEOF_SHORT__ == 2
433 typedef MLIB_MISALIGNED unsigned short misaligned_uint16;
434# define RAW16(p) (*(misaligned_uint16 *)(p))
435# endif
436# if __SIZEOF_INT__ == 4
437 typedef MLIB_MISALIGNED unsigned int misaligned_uint32;
438# define RAW32(p) (*(misaligned_uint32 *)(p))
439# elif __SIZEOF_LONG__ == 4
440 typedef MLIB_MISALIGNED unsigned long misaligned_uint32;
441# define RAW32(p) (*(misaligned_uint32 *)(p))
442# endif
443# if __SIZEOF_LONG__ == 8
444 typedef MLIB_MISALIGNED unsigned long misaligned_uint64;
445# define RAW64(p) (*(misaligned_uint64 *)(p))
446# elif __SIZEOF_LONG_LONG__ == 8
447 typedef MLIB_MISALIGNED unsigned long long misaligned_uint64;
448# define RAW64(p) (*(misaligned_uint64 *)(p))
449# endif
450#endif
451
6b033bc4 452/* --- Storage and retrieval --- */
453
a23bab96
MW		 454#if defined(RAW16) && defined(LTOH16)
455# define LOAD16_L(p) LTOH16(RAW16(p))
456#endif
457#if defined(RAW16) && defined(HTOL16)
458# define STORE16_L(p, x) (RAW16(p) = HTOL16(x))
459#endif
460#if defined(RAW16) && defined(BTOH16)
461# define LOAD16_B(p) BTOH16(RAW16(p))
462#endif
463#if defined(RAW16) && defined(HTOB16)
464# define STORE16_B(p, x) (RAW16(p) = HTOB16(x))
465#endif
466
467#if defined(RAW32) && defined(LTOH32)
468# define LOAD32_L(p) LTOH32(RAW32(p))
469#endif
470#if defined(RAW32) && defined(HTOL32)
471# define STORE32_L(p, x) (RAW32(p) = HTOL32(x))
472#endif
473#if defined(RAW32) && defined(BTOH32)
474# define LOAD32_B(p) BTOH32(RAW32(p))
475#endif
476#if defined(RAW32) && defined(HTOB32)
477# define STORE32_B(p, x) (RAW32(p) = HTOB32(x))
478#endif
479
480#if defined(RAW64) && defined(LTOH64)
481# define LOAD64_L(p) LTOH64(RAW64(p))
482#endif
483#if defined(RAW64) && defined(HTOL64)
484# define STORE64_L(p, x) (RAW64(p) = HTOL64(x))
485#endif
486#if defined(RAW64) && defined(BTOH64)
487# define LOAD64_B(p) BTOH64(RAW64(p))
488#endif
489#if defined(RAW64) && defined(HTOB64)
490# define STORE64_B(p, x) (RAW64(p) = HTOB64(x))
491#endif
492
6b033bc4 493#define GETBYTE(p, o) (((octet *)(p))[o] & MASK8)
494#define PUTBYTE(p, o, v) (((octet *)(p))[o] = U8((v)))
495
496#define LOAD8(p) (GETBYTE((p), 0))
497#define STORE8(p, v) (PUTBYTE((p), 0, (v)))
498
897c58ad
MW		 499#ifndef LOAD16_B
500# define LOAD16_B(p)
501 (((uint16)GETBYTE((p), 0) << 8) | \
502 ((uint16)GETBYTE((p), 1) << 0))
503#endif
504#ifndef LOAD16_L
505# define LOAD16_L(p) \
506 (((uint16)GETBYTE((p), 0) << 0) | \
507 ((uint16)GETBYTE((p), 1) << 8))
508#endif
6b033bc4 509#define LOAD16(p) LOAD16_B((p))
510
897c58ad
MW		 511#ifndef STORE16_B
512# define STORE16_B(p, v) \
513 (PUTBYTE((p), 0, (uint16)(v) >> 8), \
514 PUTBYTE((p), 1, (uint16)(v) >> 0))
515#endif
516#ifndef STORE16_L
517# define STORE16_L(p, v) \
518 (PUTBYTE((p), 0, (uint16)(v) >> 0), \
519 PUTBYTE((p), 1, (uint16)(v) >> 8))
520#endif
6b033bc4 521#define STORE16(p, v) STORE16_B((p), (v))
522
897c58ad
MW		 523#ifndef LOAD24_B
524# define LOAD24_B(p) \
525 (((uint24)GETBYTE((p), 0) << 16) | \
526 ((uint24)LOAD16_B((octet *)(p) + 1) << 0))
527#endif
528#ifndef LOAD24_L
529# define LOAD24_L(p) \
530 (((uint24)LOAD16_L((octet *)(p) + 0) << 0) | \
531 ((uint24)GETBYTE((p), 2) << 16))
532#endif
6a0129ea 533#define LOAD24(p) LOAD24_B((p))
534
897c58ad
MW		 535#ifndef STORE24_B
536# define STORE24_B(p, v) \
537 (PUTBYTE((p), 0, (uint24)(v) >> 16), \
538 STORE16_B((octet *)(p) + 1, (uint24)(v) >> 0))
539#endif
540#ifndef STORE24_L
541# define STORE24_L(p, v) \
542 (STORE16_L((octet *)(p) + 0, (uint24)(v) >> 0), \
543 PUTBYTE((p), 2, (uint24)(v) >> 16))
544#endif
6a0129ea 545#define STORE24(p, v) STORE24_B((p), (v))
546
897c58ad
MW		 547#ifndef LOAD32_B
548# define LOAD32_B(p) \
549 (((uint32)LOAD16_B((octet *)(p) + 0) << 16) | \
550 ((uint32)LOAD16_B((octet *)(p) + 2) << 0))
551#endif
552#ifndef LOAD32_L
553# define LOAD32_L(p) \
554 (((uint32)LOAD16_L((octet *)(p) + 0) << 0) | \
555 ((uint32)LOAD16_L((octet *)(p) + 2) << 16))
556#endif
6b033bc4 557#define LOAD32(p) LOAD32_B((p))
558
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MW		 559#ifndef STORE32_B
560# define STORE32_B(p, v) \
561 (STORE16_B((octet *)(p) + 0, (uint32)(v) >> 16), \
562 STORE16_B((octet *)(p) + 2, (uint32)(v) >> 0))
563#endif
564#ifndef STORE32_L
565# define STORE32_L(p, v) \
566 (STORE16_L((octet *)(p) + 0, (uint32)(v) >> 0), \
567 STORE16_L((octet *)(p) + 2, (uint32)(v) >> 16))
568#endif
6b033bc4 569#define STORE32(p, v) STORE32_B((p), (v))
570
a6f4a484 571#ifdef HAVE_UINT64
572
897c58ad
MW		 573# ifndef LOAD64_B
574# define LOAD64_B(p) \
575 (((uint64)LOAD32_B((octet *)(p) + 0) << 32) | \
576 ((uint64)LOAD32_B((octet *)(p) + 4) << 0))
577# endif
578# ifndef LOAD64_L
579# define LOAD64_L(p) \
580 (((uint64)LOAD32_L((octet *)(p) + 0) << 0) | \
581 ((uint64)LOAD32_L((octet *)(p) + 4) << 32))
582# endif
a6f4a484 583# define LOAD64(p) LOAD64_B((p))
584# define LOAD64_B_(d, p) ((d).i = LOAD64_B((p)))
585# define LOAD64_L_(d, p) ((d).i = LOAD64_L((p)))
586# define LOAD64_(d, p) LOAD64_B_((d), (p))
587
897c58ad
MW		 588# ifndef STORE64_B
589# define STORE64_B(p, v) \
590 (STORE32_B((octet *)(p) + 0, (uint64)(v) >> 32), \
591 STORE32_B((octet *)(p) + 4, (uint64)(v) >> 0))
592# endif
593# ifndef STORE64_L
594# define STORE64_L(p, v) \
595 (STORE32_L((octet *)(p) + 0, (uint64)(v) >> 0), \
596 STORE32_L((octet *)(p) + 4, (uint64)(v) >> 32))
597# endif
a6f4a484 598# define STORE64(p, v) STORE64_B((p), (v))
599# define STORE64_B_(p, v) STORE64_B((p), (v).i)
600# define STORE64_L_(p, v) STORE64_L((p), (v).i)
601# define STORE64_(p, v) STORE64_B_((p), (v))
602
603#else
604
605# define LOAD64_B_(d, p) \
8fb5ab99
MW		 606 ((d).hi = LOAD32_B((octet *)(p) + 0), \
607 (d).lo = LOAD32_B((octet *)(p) + 4))
a6f4a484 608# define LOAD64_L_(d, p) \
8fb5ab99
MW		 609 ((d).lo = LOAD32_L((octet *)(p) + 0), \
610 (d).hi = LOAD32_L((octet *)(p) + 4))
a6f4a484 611# define LOAD64_(d, p) LOAD64_B_((d), (p))
612
613# define STORE64_B_(p, v) \
8fb5ab99
MW		 614 (STORE32_B((octet *)(p) + 0, (v).hi), \
615 STORE32_B((octet *)(p) + 4, (v).lo))
a6f4a484 616# define STORE64_L_(p, v) \
8fb5ab99
MW		 617 (STORE32_L((octet *)(p) + 0, (v).lo), \
618 STORE32_L((octet *)(p) + 4, (v).hi))
a6f4a484 619# define STORE64_(p, v) STORE64_B_((p), (v))
620
621#endif
622
623/* --- Other operations on 64-bit integers --- */
624
625#ifdef HAVE_UINT64
626# define SET64(d, h, l) ((d).i = (U64((h)) << 32) | U64((l)))
627# define ASSIGN64(d, x) ((d).i = U64((x)))
628# define HI64(x) U32((x).i >> 32)
629# define LO64(x) U32((x).i)
3b7cea93 630# define GET64(t, x) ((t)(x).i)
a6f4a484 631#else
632# define SET64(d, h, l) ((d).hi = U32(h), (d).lo = U32(l))
633# define ASSIGN64(d, x) \
634 ((d).hi = ((x & ~MASK32) >> 16) >> 16, (d).lo = U32(x))
635# define HI64(x) U32((x).hi)
636# define LO64(x) U32((x).lo)
3b7cea93 637# define GET64(t, x) (((((t)HI64(x) << 16) << 16) & ~MASK32) | (t)LO64(x))
a6f4a484 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) == 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
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
mLib utilities library