sim/common/sim-bits.h

   1 /*  This file is part of the program psim.
   2
   3     Copyright (C) 1994-1996, Andrew Cagney <cagney@highland.com.au>
   4     Copyright (C) 1997, Free Software Foundation, Inc.
   5
   6     This program is free software; you can redistribute it and/or modify
   7     it under the terms of the GNU General Public License as published by
   8     the Free Software Foundation; either version 2 of the License, or
   9     (at your option) any later version.
  10
  11     This program is distributed in the hope that it will be useful,
  12     but WITHOUT ANY WARRANTY; without even the implied warranty of
  13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14     GNU General Public License for more details.
  15
  16     You should have received a copy of the GNU General Public License
  17     along with this program; if not, write to the Free Software
  18     Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  19
  20     */
  21
  22
  23 #ifndef _SIM_BITS_H_
  24 #define _SIM_BITS_H_
  25
  26
  27 /* Bit manipulation routines:
  28
  29    Bit numbering: The bits are numbered according to the target ISA's
  30    convention.  That being controlled by WITH_TARGET_WORD_MSB.  For
  31    the PowerPC (WITH_TARGET_WORD_MSB == 0) the numbering is 0..31
  32    while for the MIPS (WITH_TARGET_WORD_MSB == 31) it is 31..0.
  33
  34    Size convention: Each macro is in three forms - <MACRO>32 which
  35    operates in 32bit quantity (bits are numbered 0..31); <MACRO>64
  36    which operates using 64bit quantites (and bits are numbered 0..63);
  37    and <MACRO> which operates using the bit size of the target
  38    architecture (bits are still numbered 0..63), with 32bit
  39    architectures ignoring the first 32bits leaving bit 32 as the most
  40    significant.
  41
  42    NB: Use EXTRACTED, MSEXTRACTED and LSEXTRACTED as a guideline for
  43    naming.  LSMASK and LSMASKED are wrong.
  44
  45    BIT*(POS): `*' bit constant with just 1 bit set.
  46
  47    LSBIT*(OFFSET): `*' bit constant with just 1 bit set - LS bit is
  48    zero.
  49
  50    MSBIT*(OFFSET): `*' bit constant with just 1 bit set - MS bit is
  51    zero.
  52
  53    MASK*(FIRST, LAST): `*' bit constant with bits [FIRST .. LAST]
  54    set. The <MACRO> (no size) version permits FIRST >= LAST and
  55    generates a wrapped bit mask vis ([0..LAST] | [FIRST..LSB]).
  56
  57    LSMASK*(FIRST, LAST): Like MASK - LS bit is zero.
  58
  59    MSMASK*(FIRST, LAST): Like MASK - LS bit is zero.
  60
  61    MASKED*(VALUE, FIRST, LAST): Masks out all but bits [FIRST
  62    .. LAST].
  63
  64    LSMASKED*(VALUE, FIRST, LAST): Like MASKED - LS bit is zero.
  65
  66    MSMASKED*(VALUE, FIRST, LAST): Like MASKED - MS bit is zero.
  67
  68    EXTRACTED*(VALUE, FIRST, LAST): Masks out bits [FIRST .. LAST] but
  69    also right shifts the masked value so that bit LAST becomes the
  70    least significant (right most).
  71
  72    LSEXTRACTED*(VALUE, FIRST, LAST): Same as extracted - LS bit is
  73    zero.
  74
  75    MSEXTRACTED*(VALUE, FIRST, LAST): Same as extracted - MS bit is
  76    zero.
  77
  78    SHUFFLED**(VALUE, OLD, NEW): Mask then move a single bit from OLD
  79    new NEW.
  80
  81    MOVED**(VALUE, OLD_FIRST, OLD_LAST, NEW_FIRST, NEW_LAST): Moves
  82    things around so that bits OLD_FIRST..OLD_LAST are masked then
  83    moved to NEW_FIRST..NEW_LAST.
  84
  85    INSERTED*(VALUE, FIRST, LAST): Takes VALUE and `inserts' the (LAST
  86    - FIRST + 1) least significant bits into bit positions [ FIRST
  87    .. LAST ].  This is almost the complement to EXTRACTED.
  88
  89    IEA_MASKED(SHOULD_MASK, ADDR): Convert the address to the targets
  90    natural size.  If in 32bit mode, discard the high 32bits.
  91
  92    EXTEND*(VALUE): Convert the `*' bit value to the targets natural
  93    word size.  Sign extend the value if needed.
  94
  95    ALIGN_*(VALUE): Round the value upwards so that it is aligned to a
  96    `_*' byte boundary.
  97
  98    FLOOR_*(VALUE): Truncate the value so that it is aligned to a `_*'
  99    byte boundary.
 100
 101    ROT*(VALUE, NR_BITS): Return the `*' bit VALUE rotated by NR_BITS
 102    right (positive) or left (negative).
 103
 104    ROTL*(VALUE, NR_BITS): Return the `*' bit value rotated by NR_BITS
 105    left.  0 <= NR_BITS <= `*'.
 106
 107    ROTR*(VALUE, NR_BITS): Return the `*' bit value rotated by NR_BITS
 108    right.  0 <= NR_BITS <= N.
 109
 110    SEXT*(VALUE, SIGN_BIT): Treat SIGN_BIT as VALUEs sign, extend it ti
 111    `*' bits.
 112
 113    Note: Only the BIT* and MASK* macros return a constant that can be
 114    used in variable declarations.
 115
 116    */
 117
 118
 119 /* compute the number of bits between START and STOP */
 120
 121 #if (WITH_TARGET_WORD_MSB == 0)
 122 #define _MAKE_WIDTH(START, STOP) (STOP - START + 1)
 123 #else
 124 #define _MAKE_WIDTH(START, STOP) (START - STOP + 1)
 125 #endif
 126
 127
 128
 129 /* compute the number shifts required to move a bit between LSB (MSB)
 130    and POS */
 131
 132 #if (WITH_TARGET_WORD_MSB == 0)
 133 #define _LSB_SHIFT(WIDTH, POS) (WIDTH - 1 - POS)
 134 #else
 135 #define _LSB_SHIFT(WIDTH, POS) (POS)
 136 #endif
 137
 138 #if (WITH_TARGET_WORD_MSB == 0)
 139 #define _MSB_SHIFT(WIDTH, POS) (POS)
 140 #else
 141 #define _MSB_SHIFT(WIDTH, POS) (WIDTH - 1 - POS)
 142 #endif
 143
 144
 145 /* compute the absolute bit position given the OFFSET from the MSB(LSB)
 146    NB: _MAKE_xxx_POS (WIDTH, _MAKE_xxx_SHIFT (WIDTH, POS)) == POS */
 147
 148 #if (WITH_TARGET_WORD_MSB == 0)
 149 #define _MSB_POS(WIDTH, SHIFT) (SHIFT)
 150 #else
 151 #define _MSB_POS(WIDTH, SHIFT) (WIDTH - 1 - SHIFT)
 152 #endif
 153
 154 #if (WITH_TARGET_WORD_MSB == 0)
 155 #define _LSB_POS(WIDTH, SHIFT) (WIDTH - 1 - SHIFT)
 156 #else
 157 #define _LSB_POS(WIDTH, SHIFT) (SHIFT)
 158 #endif
 159
 160
 161 /* convert a 64 bit position into a corresponding 32bit position. MSB
 162    pos handles the posibility that the bit lies beyond the 32bit
 163    boundary */
 164
 165 #if (WITH_TARGET_WORD_MSB == 0)
 166 #define _MSB_32(START, STOP) (START <= STOP \
 167                               ? (START < 32 ? 0 : START - 32) \
 168                               : (STOP < 32 ? 0 : STOP - 32))
 169 #else
 170 #define _MSB_32(START, STOP) (START >= STOP \
 171                               ? (START >= 32 ? 31 : START) \
 172                               : (STOP >= 32 ? 31 : STOP))
 173 #endif
 174
 175 #if (WITH_TARGET_WORD_MSB == 0)
 176 #define _LSB_32(START, STOP) (START <= STOP \
 177                               ? (STOP < 32 ? 0 : STOP - 32) \
 178                               : (START < 32 ? 0 : START - 32))
 179 #else
 180 #define _LSB_32(START, STOP) (START >= STOP \
 181                               ? (STOP >= 32 ? 31 : STOP) \
 182                               : (START >= 32 ? 31 : START))
 183 #endif
 184
 185 #if (WITH_TARGET_WORD_MSB == 0)
 186 #define _MSB(START, STOP) (START <= STOP ? START : STOP)
 187 #else
 188 #define _MSB(START, STOP) (START >= STOP ? START : STOP)
 189 #endif
 190
 191 #if (WITH_TARGET_WORD_MSB == 0)
 192 #define _LSB(START, STOP) (START <= STOP ? STOP : START)
 193 #else
 194 #define _LSB(START, STOP) (START >= STOP ? STOP : START)
 195 #endif
 196
 197
 198 /* LS/MS Bit operations */
 199
 200 #define LSBIT8(POS)  ((unsigned8) 1 << (POS))
 201 #define LSBIT16(POS) ((unsigned16)1 << (POS))
 202 #define LSBIT32(POS) ((unsigned32)1 << (POS))
 203 #define LSBIT64(POS) ((unsigned64)1 << (POS))
 204
 205 #if (WITH_TARGET_WORD_BITSIZE == 64)
 206 #define LSBIT(POS) LSBIT64 (POS)
 207 #else
 208 #define LSBIT(POS) ((unsigned32)((POS) >= 32 \
 209                                  ? 0 \
 210                                  : (1 << ((POS) >= 32 ? 0 : (POS)))))
 211 #endif
 212
 213
 214 #define MSBIT8(POS)  ((unsigned8) 1 << ( 8 - 1 - (POS)))
 215 #define MSBIT16(POS) ((unsigned16)1 << (16 - 1 - (POS)))
 216 #define MSBIT32(POS) ((unsigned32)1 << (32 - 1 - (POS)))
 217 #define MSBIT64(POS) ((unsigned64)1 << (64 - 1 - (POS)))
 218
 219 #if (WITH_TARGET_WORD_BITSIZE == 64)
 220 #define MSBIT(POS) MSBIT64 (POS)
 221 #else
 222 #define MSBIT(POS) ((unsigned32)((POS) < 32 \
 223                                  ? 0 \
 224                                  : (1 << ((POS) < 32 ? 0 : (64 - 1) - (POS)))))
 225 #endif
 226
 227
 228 /* Bit operations */
 229
 230 #define BIT4(POS)  (1 << _LSB_SHIFT (4, (POS)))
 231 #define BIT5(POS)  (1 << _LSB_SHIFT (5, (POS)))
 232 #define BIT10(POS) (1 << _LSB_SHIFT (10, (POS)))
 233
 234 #if (WITH_TARGET_WORD_MSB == 0)
 235 #define BIT8  MSBIT8
 236 #define BIT16 MSBIT16
 237 #define BIT32 MSBIT32
 238 #define BIT64 MSBIT64
 239 #define BIT   MSBIT
 240 #else
 241 #define BIT8  LSBIT8
 242 #define BIT16 LSBIT16
 243 #define BIT32 LSBIT32
 244 #define BIT64 LSBIT64
 245 #define BIT   LSBIT
 246 #endif
 247
 248
 249
 250 /* multi bit mask */
 251
 252 /* 111111 -> mmll11 -> mm11ll */
 253 #define _MASKn(WIDTH, START, STOP) (((unsigned##WIDTH)(-1) \
 254                                      >> (_MSB_SHIFT (WIDTH, START) \
 255                                          + _LSB_SHIFT (WIDTH, STOP))) \
 256                                     << _LSB_SHIFT (WIDTH, STOP))
 257
 258 #if (WITH_TARGET_WORD_MSB == 0)
 259 #define _POS_LE(START, STOP) (START <= STOP)
 260 #else
 261 #define _POS_LE(START, STOP) (STOP <= START)
 262 #endif
 263
 264 #if (WITH_TARGET_WORD_BITSIZE == 64)
 265 #define MASK(START, STOP) \
 266      (_POS_LE ((START), (STOP)) \
 267       ? _MASKn(64, \
 268                _MSB ((START), (STOP)), \
 269                _LSB ((START), (STOP)) ) \
 270       : (_MASKn(64, _MSB_POS (64, 0), (STOP)) \
 271          | _MASKn(64, (START), _LSB_POS (64, 0))))
 272 #endif
 273 #if (WITH_TARGET_WORD_BITSIZE == 32)
 274 #define MASK(START, STOP) \
 275      (_POS_LE ((START), (STOP)) \
 276       ? (_POS_LE ((STOP), _MSB_POS (64, 31)) \
 277          ? 0 \
 278          : _MASKn (32, \
 279                    _MSB_32 ((START), (STOP)), \
 280                    _LSB_32 ((START), (STOP)))) \
 281       : (_MASKn (32, \
 282                  _LSB_32 ((START), (STOP)), \
 283                  _LSB_POS (32, 0)) \
 284          | (_POS_LE ((STOP), _MSB_POS (64, 31)) \
 285             ? 0 \
 286             : _MASKn (32, \
 287                       _MSB_POS (32, 0), \
 288                       _MSB_32 ((START), (STOP))))))
 289 #endif
 290 #if !defined (MASK)
 291 #error "MASK never undefined"
 292 #endif
 293
 294
 295 /* Multi-bit mask on least significant bits */
 296
 297 #define _LSMASKn(WIDTH, FIRST, LAST) _MASKn (WIDTH, \
 298                                              _LSB_POS (WIDTH, FIRST), \
 299                                              _LSB_POS (WIDTH, LAST))
 300
 301 #define LSMASK8(FIRST, LAST)   _LSMASKn ( 8, (FIRST), (LAST))
 302 #define LSMASK16(FIRST, LAST)  _LSMASKn (16, (FIRST), (LAST))
 303 #define LSMASK32(FIRST, LAST)  _LSMASKn (32, (FIRST), (LAST))
 304 #define LSMASK64(FIRST, LAST)  _LSMASKn (64, (FIRST), (LAST))
 305
 306 #define LSMASK(FIRST, LAST) (MASK (_LSB_POS (64, FIRST), _LSB_POS (64, LAST)))
 307
 308
 309 /* Multi-bit mask on most significant bits */
 310
 311 #define _MSMASKn(WIDTH, FIRST, LAST) _MASKn (WIDTH, \
 312                                              _MSB_POS (WIDTH, FIRST), \
 313                                              _MSB_POS (WIDTH, LAST))
 314
 315 #define MSMASK8(FIRST, LAST)  _MSMASKn ( 8, (FIRST), (LAST))
 316 #define MSMASK16(FIRST, LAST) _MSMASKn (16, (FIRST), (LAST))
 317 #define MSMASK32(FIRST, LAST) _MSMASKn (32, (FIRST), (LAST))
 318 #define MSMASK64(FIRST, LAST) _MSMASKn (64, (FIRST), (LAST))
 319
 320 #define MSMASK(FIRST, LAST) (MASK (_MSB_POS (64, FIRST), _MSB_POS (64, LAST)))
 321
 322
 323
 324 #if (WITH_TARGET_WORD_MSB == 0)
 325 #define MASK8  MSMASK8
 326 #define MASK16 MSMASK16
 327 #define MASK32 MSMASK32
 328 #define MASK64 MSMASK64
 329 #else
 330 #define MASK8  LSMASK8
 331 #define MASK16 LSMASK16
 332 #define MASK32 LSMASK32
 333 #define MASK64 LSMASK64
 334 #endif
 335
 336
 337
 338 /* mask the required bits, leaving them in place */
 339
 340 INLINE_SIM_BITS(unsigned8)  LSMASKED8  (unsigned8  word, int first, int last);
 341 INLINE_SIM_BITS(unsigned16) LSMASKED16 (unsigned16 word, int first, int last);
 342 INLINE_SIM_BITS(unsigned32) LSMASKED32 (unsigned32 word, int first, int last);
 343 INLINE_SIM_BITS(unsigned64) LSMASKED64 (unsigned64 word, int first, int last);
 344
 345 INLINE_SIM_BITS(unsigned_word) LSMASKED (unsigned_word word, int first, int last);
 346
 347 INLINE_SIM_BITS(unsigned8)  MSMASKED8  (unsigned8  word, int first, int last);
 348 INLINE_SIM_BITS(unsigned16) MSMASKED16 (unsigned16 word, int first, int last);
 349 INLINE_SIM_BITS(unsigned32) MSMASKED32 (unsigned32 word, int first, int last);
 350 INLINE_SIM_BITS(unsigned64) MSMASKED64 (unsigned64 word, int first, int last);
 351
 352 INLINE_SIM_BITS(unsigned_word) MSMASKED (unsigned_word word, int first, int last);
 353
 354 #if (WITH_TARGET_WORD_MSB == 0)
 355 #define MASKED8  MSMASKED8
 356 #define MASKED16 MSMASKED16
 357 #define MASKED32 MSMASKED32
 358 #define MASKED64 MSMASKED64
 359 #define MASKED   MSMASKED
 360 #else
 361 #define MASKED8  LSMASKED8
 362 #define MASKED16 LSMASKED16
 363 #define MASKED32 LSMASKED32
 364 #define MASKED64 LSMASKED64
 365 #define MASKED LSMASKED
 366 #endif
 367
 368
 369
 370 /* extract the required bits aligning them with the lsb */
 371
 372 INLINE_SIM_BITS(unsigned8)  LSEXTRACTED8  (unsigned8  val, int start, int stop);
 373 INLINE_SIM_BITS(unsigned16) LSEXTRACTED16 (unsigned16 val, int start, int stop);
 374 INLINE_SIM_BITS(unsigned32) LSEXTRACTED32 (unsigned32 val, int start, int stop);
 375 INLINE_SIM_BITS(unsigned64) LSEXTRACTED64 (unsigned64 val, int start, int stop);
 376
 377 INLINE_SIM_BITS(unsigned_word) LSEXTRACTED (unsigned_word val, int start, int stop);
 378
 379 INLINE_SIM_BITS(unsigned8)  MSEXTRACTED8  (unsigned8  val, int start, int stop);
 380 INLINE_SIM_BITS(unsigned16) MSEXTRACTED16 (unsigned16 val, int start, int stop);
 381 INLINE_SIM_BITS(unsigned32) MSEXTRACTED32 (unsigned32 val, int start, int stop);
 382 INLINE_SIM_BITS(unsigned64) MSEXTRACTED64 (unsigned64 val, int start, int stop);
 383
 384 INLINE_SIM_BITS(unsigned_word) MSEXTRACTED (unsigned_word val, int start, int stop);
 385
 386 #if (WITH_TARGET_WORD_MSB == 0)
 387 #define EXTRACTED8  MSEXTRACTED8
 388 #define EXTRACTED16 MSEXTRACTED16
 389 #define EXTRACTED32 MSEXTRACTED32
 390 #define EXTRACTED64 MSEXTRACTED64
 391 #define EXTRACTED   MSEXTRACTED
 392 #else
 393 #define EXTRACTED8  LSEXTRACTED8
 394 #define EXTRACTED16 LSEXTRACTED16
 395 #define EXTRACTED32 LSEXTRACTED32
 396 #define EXTRACTED64 LSEXTRACTED64
 397 #define EXTRACTED   LSEXTRACTED
 398 #endif
 399
 400
 401
 402 /* move a single bit around */
 403 /* NB: the wierdness (N>O?N-O:0) is to stop a warning from GCC */
 404 #define _SHUFFLEDn(N, WORD, OLD, NEW) \
 405 ((OLD) < (NEW) \
 406  ? (((unsigned##N)(WORD) \
 407      >> (((NEW) > (OLD)) ? ((NEW) - (OLD)) : 0)) \
 408     & MASK32((NEW), (NEW))) \
 409  : (((unsigned##N)(WORD) \
 410      << (((OLD) > (NEW)) ? ((OLD) - (NEW)) : 0)) \
 411     & MASK32((NEW), (NEW))))
 412
 413 #define SHUFFLED32(WORD, OLD, NEW) _SHUFFLEDn (32, WORD, OLD, NEW)
 414 #define SHUFFLED64(WORD, OLD, NEW) _SHUFFLEDn (64, WORD, OLD, NEW)
 415
 416 #define SHUFFLED(WORD, OLD, NEW) _SHUFFLEDn (_word, WORD, OLD, NEW)
 417
 418
 419 /* Insert a group of bits into a bit position */
 420
 421 INLINE_SIM_BITS(unsigned8)  LSINSERTED8  (unsigned8  val, int start, int stop);
 422 INLINE_SIM_BITS(unsigned16) LSINSERTED16 (unsigned16 val, int start, int stop);
 423 INLINE_SIM_BITS(unsigned32) LSINSERTED32 (unsigned32 val, int start, int stop);
 424 INLINE_SIM_BITS(unsigned64) LSINSERTED64 (unsigned64 val, int start, int stop);
 425 INLINE_SIM_BITS(unsigned_word) LSINSERTED (unsigned_word val, int start, int stop);
 426
 427 INLINE_SIM_BITS(unsigned8)  MSINSERTED8  (unsigned8  val, int start, int stop);
 428 INLINE_SIM_BITS(unsigned16) MSINSERTED16 (unsigned16 val, int start, int stop);
 429 INLINE_SIM_BITS(unsigned32) MSINSERTED32 (unsigned32 val, int start, int stop);
 430 INLINE_SIM_BITS(unsigned64) MSINSERTED64 (unsigned64 val, int start, int stop);
 431 INLINE_SIM_BITS(unsigned_word) MSINSERTED (unsigned_word val, int start, int stop);
 432
 433 #if (WITH_TARGET_WORD_MSB == 0)
 434 #define INSERTED8  MSINSERTED8
 435 #define INSERTED16 MSINSERTED16
 436 #define INSERTED32 MSINSERTED32
 437 #define INSERTED64 MSINSERTED64
 438 #define INSERTED   MSINSERTED
 439 #else
 440 #define INSERTED8  LSINSERTED8
 441 #define INSERTED16 LSINSERTED16
 442 #define INSERTED32 LSINSERTED32
 443 #define INSERTED64 LSINSERTED64
 444 #define INSERTED   LSINSERTED
 445 #endif
 446
 447
 448
 449 /* MOVE bits from one loc to another (combination of extract/insert) */
 450
 451 #define MOVED8(VAL,OH,OL,NH,NL)  INSERTED8 (EXTRACTED8 ((VAL), OH, OL), NH, NL)
 452 #define MOVED16(VAL,OH,OL,NH,NL) INSERTED16(EXTRACTED16((VAL), OH, OL), NH, NL)
 453 #define MOVED32(VAL,OH,OL,NH,NL) INSERTED32(EXTRACTED32((VAL), OH, OL), NH, NL)
 454 #define MOVED64(VAL,OH,OL,NH,NL) INSERTED64(EXTRACTED64((VAL), OH, OL), NH, NL)
 455 #define MOVED(VAL,OH,OL,NH,NL)   INSERTED  (EXTRACTED  ((VAL), OH, OL), NH, NL)
 456
 457
 458
 459 /* Sign extend the quantity to the targets natural word size */
 460
 461 #define EXTEND4(X)  (LSSEXT ((X), 3))
 462 #define EXTEND5(X)  (LSSEXT ((X), 4))
 463 #define EXTEND8(X)  ((signed_word)(signed8)(X))
 464 #define EXTEND11(X)  (LSSEXT ((X), 10))
 465 #define EXTEND15(X)  (LSSEXT ((X), 14))
 466 #define EXTEND16(X) ((signed_word)(signed16)(X))
 467 #define EXTEND24(X)  (LSSEXT ((X), 24))
 468 #define EXTEND32(X) ((signed_word)(signed32)(X))
 469 #define EXTEND64(X) ((signed_word)(signed64)(X))
 470
 471 /* depending on MODE return a 64bit or 32bit (sign extended) value */
 472 #if (WITH_TARGET_WORD_BITSIZE == 64)
 473 #define EXTENDED(X)     ((signed64)(signed32)(X))
 474 #endif
 475 #if (WITH_TARGET_WORD_BITSIZE == 32)
 476 #define EXTENDED(X)     (X)
 477 #endif
 478
 479
 480 /* memory alignment macro's */
 481 #define _ALIGNa(A,X)  (((X) + ((A) - 1)) & ~((A) - 1))
 482 #define _FLOORa(A,X)  ((X) & ~((A) - 1))
 483
 484 #define ALIGN_8(X)      _ALIGNa (8, X)
 485 #define ALIGN_16(X)     _ALIGNa (16, X)
 486
 487 #define ALIGN_PAGE(X)   _ALIGNa (0x1000, X)
 488 #define FLOOR_PAGE(X)   ((X) & ~(0x1000 - 1))
 489
 490
 491 /* bit bliting macro's */
 492 #define BLIT32(V, POS, BIT) \
 493 do { \
 494   if (BIT) \
 495     V |= BIT32 (POS); \
 496   else \
 497     V &= ~BIT32 (POS); \
 498 } while (0)
 499 #define MBLIT32(V, LO, HI, VAL) \
 500 do { \
 501   (V) = (((V) & ~MASK32 ((LO), (HI))) \
 502          | INSERTED32 (VAL, LO, HI)); \
 503 } while (0)
 504
 505
 506
 507 /* some rotate functions.  The generic macro's ROT, ROTL, ROTR are
 508    intentionally omited. */
 509
 510
 511 INLINE_SIM_BITS(unsigned8)  ROT8  (unsigned8  val, int shift);
 512 INLINE_SIM_BITS(unsigned16) ROT16 (unsigned16 val, int shift);
 513 INLINE_SIM_BITS(unsigned32) ROT32 (unsigned32 val, int shift);
 514 INLINE_SIM_BITS(unsigned64) ROT64 (unsigned64 val, int shift);
 515
 516
 517 INLINE_SIM_BITS(unsigned8)  ROTL8  (unsigned8  val, int shift);
 518 INLINE_SIM_BITS(unsigned16) ROTL16 (unsigned16 val, int shift);
 519 INLINE_SIM_BITS(unsigned32) ROTL32 (unsigned32 val, int shift);
 520 INLINE_SIM_BITS(unsigned64) ROTL64 (unsigned64 val, int shift);
 521
 522
 523 INLINE_SIM_BITS(unsigned8)  ROTR8  (unsigned8  val, int shift);
 524 INLINE_SIM_BITS(unsigned16) ROTR16 (unsigned16 val, int shift);
 525 INLINE_SIM_BITS(unsigned32) ROTR32 (unsigned32 val, int shift);
 526 INLINE_SIM_BITS(unsigned64) ROTR64 (unsigned64 val, int shift);
 527
 528
 529
 530 /* Sign extension operations */
 531
 532 INLINE_SIM_BITS(unsigned8)  LSSEXT8  (signed8  val, int sign_bit);
 533 INLINE_SIM_BITS(unsigned16) LSSEXT16 (signed16 val, int sign_bit);
 534 INLINE_SIM_BITS(unsigned32) LSSEXT32 (signed32 val, int sign_bit);
 535 INLINE_SIM_BITS(unsigned64) LSSEXT64 (signed64 val, int sign_bit);
 536 INLINE_SIM_BITS(unsigned_word) LSSEXT (signed_word val, int sign_bit);
 537
 538 INLINE_SIM_BITS(unsigned8)  MSSEXT8  (signed8  val, int sign_bit);
 539 INLINE_SIM_BITS(unsigned16) MSSEXT16 (signed16 val, int sign_bit);
 540 INLINE_SIM_BITS(unsigned32) MSSEXT32 (signed32 val, int sign_bit);
 541 INLINE_SIM_BITS(unsigned64) MSSEXT64 (signed64 val, int sign_bit);
 542 INLINE_SIM_BITS(unsigned_word) MSSEXT (signed_word val, int sign_bit);
 543
 544 #if (WITH_TARGET_WORD_MSB == 0)
 545 #define SEXT8  MSSEXT8
 546 #define SEXT16 MSSEXT16
 547 #define SEXT32 MSSEXT32
 548 #define SEXT64 MSSEXT64
 549 #define SEXT   MSSEXT
 550 #else
 551 #define SEXT8  LSSEXT8
 552 #define SEXT16 LSSEXT16
 553 #define SEXT32 LSSEXT32
 554 #define SEXT64 LSSEXT64
 555 #define SEXT   LSSEXT
 556 #endif
 557
 558
 559
 560 #if H_REVEALS_MODULE_P (SIM_BITS_INLINE)
 561 #include "sim-bits.c"
 562 #endif
 563
 564 #endif /* _SIM_BITS_H_ */