cpu/iq2000m.cpu

   1 ; IQ2000-only CPU description. -*- Scheme -*-
   2 ;
   3 ; Copyright 2000, 2001, 2002, 2004, 2007, 2009 Free Software Foundation, Inc.
   4 ;
   5 ; Contributed by Red Hat Inc; developed under contract from Vitesse.
   6 ;
   7 ; This file is part of the GNU Binutils.
   8 ;
   9 ; This program is free software; you can redistribute it and/or modify
  10 ; it under the terms of the GNU General Public License as published by
  11 ; the Free Software Foundation; either version 3 of the License, or
  12 ; (at your option) any later version.
  13 ;
  14 ; This program is distributed in the hope that it will be useful,
  15 ; but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 ; GNU General Public License for more details.
  18 ;
  19 ; You should have received a copy of the GNU General Public License
  20 ; along with this program; if not, write to the Free Software
  21 ; Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  22 ; MA 02110-1301, USA.
  23
  24 (dni andoui "and upper ones immediate" (MACH2000 USES-RS USES-RT)
  25      "andoui $rt,$rs,$hi16"
  26      (+ OP_ANDOUI rs rt hi16)
  27      (set rt (and rs (or (sll hi16 16) #xFFFF)))
  28      ())
  29
  30 (dni andoui2 "and upper ones immediate" (ALIAS NO-DIS MACH2000 USES-RS USES-RT)
  31      "andoui ${rt-rs},$hi16"
  32      (+ OP_ANDOUI rt-rs hi16)
  33      (set rt-rs (and rt-rs (or (sll hi16 16) #xFFFF)))
  34      ())
  35
  36 (dni orui2 "or upper immediate" (ALIAS NO-DIS MACH2000 USES-RS USES-RT)
  37      "orui ${rt-rs},$hi16"
  38      (+ OP_ORUI rt-rs hi16)
  39      (set rt-rs (or rt-rs (sll hi16 16)))
  40      ())
  41
  42 (dni orui "or upper immediate" (MACH2000 USES-RS USES-RT)
  43      "orui $rt,$rs,$hi16"
  44      (+ OP_ORUI rs rt hi16)
  45      (set rt (or rs (sll hi16 16)))
  46      ())
  47
  48 (dni bgtz "branch if greater than zero" (MACH2000 USES-RS)
  49      "bgtz $rs,$offset"
  50      (+ OP_BGTZ rs (f-rt 0) offset)
  51      (if (gt rs 0)
  52          (delay 1 (set pc offset)))
  53      ())
  54
  55
  56 (dni bgtzl "branch if greater than zero likely" (MACH2000 USES-RS)
  57      "bgtzl $rs,$offset"
  58      (+ OP_BGTZL rs (f-rt 0) offset)
  59      (if (gt rs 0)
  60          (delay 1 (set pc offset))
  61          (skip 1))
  62      ())
  63
  64 (dni blez "branch if less than or equal to zero" (MACH2000 USES-RS)
  65      "blez $rs,$offset"
  66      (+ OP_BLEZ rs (f-rt 0) offset)
  67      (if (le rs 0)
  68          (delay 1 (set pc offset)))
  69      ())
  70
  71 (dni blezl "branch if less than or equal to zero likely" (MACH2000 USES-RS)
  72      "blezl $rs,$offset"
  73      (+ OP_BLEZL rs (f-rt 0) offset)
  74      (if (le rs 0)
  75          (delay 1 (set pc offset))
  76          (skip 1))
  77      ())
  78
  79
  80 (dni mrgb "merge bytes" (MACH2000 USES-RD USES-RS USES-RT)
  81      "mrgb $rd,$rs,$rt,$mask"
  82      (+ OP_SPECIAL rs rt rd (f-10 0) mask FUNC_MRGB)
  83      (sequence ((SI temp))
  84                (if (bitclear? mask 0)
  85                    (set temp (and rs #xFF))
  86                    (set temp (and rt #xFF)))
  87                (if (bitclear? mask 1)
  88                    (set temp (or temp (and rs #xFF00)))
  89                    (set temp (or temp (and rt #xFF00))))
  90                (if (bitclear? mask 2)
  91                    (set temp (or temp (and rs #xFF0000)))
  92                    (set temp (or temp (and rt #xFF0000))))
  93                (if (bitclear? mask 3)
  94                    (set temp (or temp (and rs #xFF000000)))
  95                    (set temp (or temp (and rt #xFF000000))))
  96                (set rd temp))
  97      ())
  98
  99 (dni mrgb2 "merge bytes" (ALIAS NO-DIS MACH2000 USES-RD USES-RS USES-RT)
 100      "mrgb ${rd-rs},$rt,$mask"
 101      (+ OP_SPECIAL rt rd-rs (f-10 0) mask FUNC_MRGB)
 102      (sequence ((SI temp))
 103                (if (bitclear? mask 0)
 104                    (set temp (and rd-rs #xFF))
 105                    (set temp (and rt #xFF)))
 106                (if (bitclear? mask 1)
 107                    (set temp (or temp (and rd-rs #xFF00)))
 108                    (set temp (or temp (and rt #xFF00))))
 109                (if (bitclear? mask 2)
 110                    (set temp (or temp (and rd-rs #xFF0000)))
 111                    (set temp (or temp (and rt #xFF0000))))
 112                (if (bitclear? mask 3)
 113                    (set temp (or temp (and rd-rs #xFF000000)))
 114                    (set temp (or temp (and rt #xFF000000))))
 115                (set rd-rs temp))
 116      ())
 117
 118 ; NOTE: None of these instructions' semantics are specified, so they
 119 ; will not work in a simulator.
 120 ;
 121 ; Architectural and coprocessor instructions.
 122 ; BREAK and SYSCALL are implemented with escape hatches to the C
 123 ; code.  These are used by the test suite to indicate pass/failures.
 124
 125 (dni bctxt "branch and switch context" (MACH2000 DELAY-SLOT COND-CTI USES-RS)
 126      "bctxt $rs,$offset"
 127      (+ OP_REGIMM rs (f-rt 6) offset)
 128      (unimp bctxt)
 129      ())
 130
 131 (dni bc0f "branch if copro 0 condition false" (MACH2000 DELAY-SLOT COND-CTI)
 132      "bc0f $offset"
 133      (+ OP_COP0 (f-rs 8) (f-rt 0) offset)
 134      (unimp bc0f)
 135      ())
 136
 137 (dni bc0fl "branch if copro 0 condition false likely" (MACH2000 DELAY-SLOT COND-CTI SKIP-CTI)
 138      "bc0fl $offset"
 139      (+ OP_COP0 (f-rs 8) (f-rt 2) offset)
 140      (unimp bc0fl)
 141      ())
 142
 143 (dni bc3f "branch if copro 3 condition false" (MACH2000 DELAY-SLOT COND-CTI)
 144      "bc3f $offset"
 145      (+ OP_COP3 (f-rs 8) (f-rt 0) offset)
 146      (unimp bc3f)
 147      ())
 148
 149 (dni bc3fl "branch if copro 3 condition false likely" (MACH2000 DELAY-SLOT COND-CTI SKIP-CTI)
 150      "bc3fl $offset"
 151      (+ OP_COP3 (f-rs 8) (f-rt 2) offset)
 152      (unimp bc3fl)
 153      ())
 154
 155 (dni bc0t "branch if copro 0 condition true" (MACH2000 DELAY-SLOT COND-CTI)
 156      "bc0t $offset"
 157      (+ OP_COP0 (f-rs 8) (f-rt 1) offset)
 158      (unimp bc0t)
 159      ())
 160
 161 (dni bc0tl "branch if copro 0 condition true likely" (MACH2000 DELAY-SLOT COND-CTI SKIP-CTI)
 162      "bc0tl $offset"
 163      (+ OP_COP0 (f-rs 8) (f-rt 3) offset)
 164      (unimp bc0tl)
 165      ())
 166
 167 (dni bc3t "branch if copro 3 condition true" (MACH2000 DELAY-SLOT COND-CTI)
 168      "bc3t $offset"
 169      (+ OP_COP3 (f-rs 8) (f-rt 1) offset)
 170      (unimp bc3t)
 171      ())
 172
 173 (dni bc3tl "branch if copro 3 condition true likely" (MACH2000 DELAY-SLOT COND-CTI SKIP-CTI)
 174      "bc3tl $offset"
 175      (+ OP_COP3 (f-rs 8) (f-rt 3) offset)
 176      (unimp bc3tl)
 177      ())
 178
 179 ; Note that we don't set the USES-RD or USES-RT attributes for many of the following
 180 ; instructions, as it's the COP register that's being specified.
 181
 182 (dni cfc0 "control from coprocessor 0" (MACH2000 LOAD-DELAY USES-RT)
 183      "cfc0 $rt,$rd"
 184      (+ OP_COP0 (f-rs 2) rt rd (f-10-11 0))
 185      (unimp cfc0)
 186      ())
 187
 188 (dni cfc1 "control from coprocessor 1" (MACH2000 LOAD-DELAY USES-RT)
 189      "cfc1 $rt,$rd"
 190      (+ OP_COP1 (f-rs 2) rt rd (f-10-11 0))
 191      (unimp cfc1)
 192      ())
 193
 194 (dni cfc2 "control from coprocessor 2" (MACH2000 LOAD-DELAY USES-RT YIELD-INSN)
 195      "cfc2 $rt,$rd"
 196      (+ OP_COP2 (f-rs 2) rt rd (f-10-11 0))
 197      (unimp cfc2)
 198      ())
 199
 200 (dni cfc3 "control from coprocessor 3" (MACH2000 LOAD-DELAY USES-RT YIELD-INSN)
 201      "cfc3 $rt,$rd"
 202      (+ OP_COP3 (f-rs 2) rt rd (f-10-11 0))
 203      (unimp cfc3)
 204      ())
 205
 206 ; COPz instructions are an instruction form, not real instructions
 207 ; with associated assembly mnemonics.  Therefore, they are omitted
 208 ; from the ISA description.
 209
 210 (dni chkhdr "check header" (MACH2000 LOAD-DELAY USES-RD YIELD-INSN)
 211      "chkhdr $rd,$rt"
 212      (+ OP_COP3 (f-rs 9) rt rd (f-shamt 0) (f-func 0))
 213      (unimp chkhdr)
 214      ())
 215
 216 (dni ctc0 "control to coprocessor 0" (MACH2000 USES-RT)
 217      "ctc0 $rt,$rd"
 218      (+ OP_COP0 (f-rs 6) rt rd (f-10-11 0))
 219      (unimp ctc0)
 220      ())
 221
 222 (dni ctc1 "control to coprocessor 1" (MACH2000 USES-RT)
 223      "ctc1 $rt,$rd"
 224      (+ OP_COP1 (f-rs 6) rt rd (f-10-11 0))
 225      (unimp ctc1)
 226      ())
 227
 228 (dni ctc2 "control to coprocessor 2" (MACH2000 USES-RT)
 229      "ctc2 $rt,$rd"
 230      (+ OP_COP2 (f-rs 6) rt rd (f-10-11 0))
 231      (unimp ctc2)
 232      ())
 233
 234 (dni ctc3 "control to coprocessor 3" (MACH2000 USES-RT)
 235      "ctc3 $rt,$rd"
 236      (+ OP_COP3 (f-rs 6) rt rd (f-10-11 0))
 237      (unimp ctc3)
 238      ())
 239
 240 (dni jcr "jump context register" (MACH2000 DELAY-SLOT UNCOND-CTI USES-RS)
 241      "jcr $rs"
 242      (+ OP_SPECIAL rs (f-rt 0) (f-rd 0) (f-shamt 0) FUNC_JCR)
 243      (unimp jcr)
 244      ())
 245
 246 (dni luc32 "lookup chain 32 bits" (MACH2000 USES-RD USES-RT YIELD-INSN)
 247      "luc32 $rt,$rd"
 248      (+ OP_COP2 (f-rs 1) rt rd (f-shamt 0) (f-func 3))
 249      (unimp luc32)
 250      ())
 251
 252 (dni luc32l "lookup chain 32 bits and lock" (MACH2000 USES-RD USES-RT YIELD-INSN)
 253      "luc32l $rt,$rd"
 254      (+ OP_COP2 (f-rs 1) rt rd (f-shamt 0) (f-func 7))
 255      (unimp luc32l)
 256      ())
 257
 258 (dni luc64 "lookup chain 64 bits" (MACH2000 USES-RD USES-RT YIELD-INSN)
 259      "luc64 $rt,$rd"
 260      (+ OP_COP2 (f-rs 1) rt rd (f-shamt 0) (f-func 11))
 261      (unimp luc64)
 262      ())
 263
 264 (dni luc64l "lookup chain 64 bits and lock" (MACH2000 USES-RD USES-RT YIELD-INSN)
 265      "luc64l $rt,$rd"
 266      (+ OP_COP2 (f-rs 1) rt rd (f-shamt 0) (f-func 15))
 267      (unimp luc64l)
 268      ())
 269
 270 (dni luk "lookup key" (MACH2000 USES-RD USES-RT)
 271      "luk $rt,$rd"
 272      (+ OP_COP2 (f-rs 1) rt rd (f-shamt 0) (f-func 8))
 273      (unimp luk)
 274      ())
 275
 276 (dni lulck "lookup lock" (MACH2000 USES-RT YIELD-INSN)
 277      "lulck $rt"
 278      (+ OP_COP2 (f-rs 1) rt (f-rd 0) (f-shamt 0) (f-func 4))
 279      (unimp lulck)
 280      ())
 281
 282 (dni lum32 "lookup match 32 bits" (MACH2000 USES-RD USES-RT YIELD-INSN)
 283      "lum32 $rt,$rd"
 284      (+ OP_COP2 (f-rs 1) rt rd (f-shamt 0) (f-func 2))
 285      (unimp lum32)
 286      ())
 287
 288 (dni lum32l "lookup match 32 bits and lock" (MACH2000 USES-RD USES-RT YIELD-INSN)
 289      "lum32l $rt,$rd"
 290      (+ OP_COP2 (f-rs 1) rt rd (f-shamt 0) (f-func 6))
 291      (unimp lum32l)
 292      ())
 293
 294 (dni lum64 "lookup match 64 bits" (MACH2000 USES-RD USES-RT YIELD-INSN)
 295      "lum64 $rt,$rd"
 296      (+ OP_COP2 (f-rs 1) rt rd (f-shamt 0) (f-func 10))
 297      (unimp lum64)
 298      ())
 299
 300 (dni lum64l "lookup match 64 bits and lock" (MACH2000 USES-RD USES-RT YIELD-INSN)
 301      "lum64l $rt,$rd"
 302      (+ OP_COP2 (f-rs 1) rt rd (f-shamt 0) (f-func 14))
 303      (unimp lum64l)
 304      ())
 305
 306 (dni lur "lookup read" (MACH2000 USES-RD USES-RT YIELD-INSN)
 307      "lur $rt,$rd"
 308      (+ OP_COP2 (f-rs 1) rt rd (f-shamt 0) (f-func 1))
 309      (unimp lur)
 310      ())
 311
 312 (dni lurl "lookup read and lock" (MACH2000 USES-RD USES-RT YIELD-INSN)
 313      "lurl $rt,$rd"
 314      (+ OP_COP2 (f-rs 1) rt rd (f-shamt 0) (f-func 5))
 315      (unimp lurl)
 316      ())
 317
 318 (dni luulck "lookup unlock" (MACH2000 USES-RT YIELD-INSN)
 319      "luulck $rt"
 320      (+ OP_COP2 (f-rs 1) rt (f-rd 0) (f-shamt 0) (f-func 0))
 321      (unimp luulck)
 322      ())
 323
 324 (dni mfc0 "move from coprocessor 0" (MACH2000 LOAD-DELAY USES-RT)
 325      "mfc0 $rt,$rd"
 326      (+ OP_COP0 (f-rs 0) rt rd (f-10-11 0))
 327      (unimp mfc0)
 328      ())
 329
 330 (dni mfc1 "move from coprocessor 1" (MACH2000 LOAD-DELAY USES-RT)
 331      "mfc1 $rt,$rd"
 332      (+ OP_COP1 (f-rs 0) rt rd (f-10-11 0))
 333      (unimp mfc1)
 334      ())
 335
 336 (dni mfc2 "move from coprocessor 2" (MACH2000 LOAD-DELAY USES-RT YIELD-INSN)
 337      "mfc2 $rt,$rd"
 338      (+ OP_COP2 (f-rs 0) rt rd (f-10-11 0))
 339      (unimp mfc2)
 340      ())
 341
 342 (dni mfc3 "move from coprocessor 3" (MACH2000 LOAD-DELAY USES-RT YIELD-INSN)
 343      "mfc3 $rt,$rd"
 344      (+ OP_COP3 (f-rs 0) rt rd (f-10-11 0))
 345      (unimp mfc3)
 346      ())
 347
 348 (dni mtc0 "move to coprocessor 0" (MACH2000 USES-RT)
 349      "mtc0 $rt,$rd"
 350      (+ OP_COP0 (f-rs 4) rt rd (f-10-11 0))
 351      (unimp mtc0)
 352      ())
 353
 354 (dni mtc1 "move to coprocessor 1" (MACH2000 USES-RT)
 355      "mtc1 $rt,$rd"
 356      (+ OP_COP1 (f-rs 4) rt rd (f-10-11 0))
 357      (unimp mtc1)
 358      ())
 359
 360 (dni mtc2 "move to coprocessor 2" (MACH2000 USES-RT)
 361      "mtc2 $rt,$rd"
 362      (+ OP_COP2 (f-rs 4) rt rd (f-10-11 0))
 363      (unimp mtc2)
 364      ())
 365
 366 (dni mtc3 "move to coprocessor 3" (MACH2000 USES-RT)
 367      "mtc3 $rt,$rd"
 368      (+ OP_COP3 (f-rs 4) rt rd (f-10-11 0))
 369      (unimp mtc3)
 370      ())
 371
 372 (dni pkrl "pkrl" (MACH2000 USES-RD USES-RT YIELD-INSN)
 373      "pkrl $rd,$rt"
 374      (+ OP_COP3 (f-rs 1) rt rd (f-shamt 0) (f-func 7))
 375      (unimp pkrl)
 376      ())
 377
 378 (dni pkrlr1 "pkrlr1" (MACH2000 USES-RT YIELD-INSN)
 379      "pkrlr1 $rt,$_index,$count"
 380      (+ OP_COP3 (f-rs 29) rt count _index)
 381      (unimp pkrlr1)
 382      ())
 383
 384 (dni pkrlr30 "pkrlr30" (MACH2000 USES-RT YIELD-INSN)
 385      "pkrlr30 $rt,$_index,$count"
 386      (+ OP_COP3 (f-rs 31) rt count _index)
 387      (unimp pkrlr30)
 388      ())
 389
 390 (dni rb "dma read bytes" (MACH2000 USES-RD USES-RT YIELD-INSN)
 391      "rb $rd,$rt"
 392      (+ OP_COP3 (f-rs 1) rt rd (f-shamt 0) (f-func 4))
 393      (unimp rb)
 394      ())
 395
 396 (dni rbr1 "dma read bytes using r1" (MACH2000 USES-RT YIELD-INSN)
 397      "rbr1 $rt,$_index,$count"
 398      (+ OP_COP3 (f-rs 24) rt count _index)
 399      (unimp rbr1)
 400      ())
 401
 402 (dni rbr30 "dma read bytes using r30" (MACH2000 USES-RT YIELD-INSN)
 403      "rbr30 $rt,$_index,$count"
 404      (+ OP_COP3 (f-rs 26) rt count _index)
 405      (unimp rbr30)
 406      ())
 407
 408 (dni rfe "restore from exception" (MACH2000)
 409      "rfe"
 410      (+ OP_COP0 (f-25 1) (f-24-19 0) (f-func 16))
 411      (unimp rfe)
 412      ())
 413
 414 (dni rx "dma read word64s" (MACH2000 USES-RD USES-RT YIELD-INSN)
 415      "rx $rd,$rt"
 416      (+ OP_COP3 (f-rs 1) rt rd (f-shamt 0) (f-func 6))
 417      (unimp rx)
 418      ())
 419
 420 (dni rxr1 "dma read word64s using r1" (MACH2000 USES-RT YIELD-INSN)
 421      "rxr1 $rt,$_index,$count"
 422      (+ OP_COP3 (f-rs 28) rt count _index)
 423      (unimp rxr1)
 424      ())
 425
 426 (dni rxr30 "dma read word 64s using r30" (MACH2000 USES-RT YIELD-INSN)
 427      "rxr30 $rt,$_index,$count"
 428      (+ OP_COP3 (f-rs 30) rt count _index)
 429      (unimp rxr30)
 430      ())
 431
 432 (dni sleep "sleep" (MACH2000 YIELD-INSN)
 433      "sleep"
 434      (+ OP_SPECIAL execode FUNC_SLEEP)
 435      (unimp sleep)
 436      ())
 437
 438 (dni srrd "sram read" (MACH2000 USES-RT YIELD-INSN)
 439      "srrd $rt"
 440      (+ OP_COP2 (f-rs 1) rt (f-rd 0) (f-shamt 0) (f-func 16))
 441      (unimp srrd)
 442      ())
 443
 444 (dni srrdl "sram read and lock" (MACH2000 USES-RT YIELD-INSN)
 445      "srrdl $rt"
 446      (+ OP_COP2 (f-rs 1) rt (f-rd 0) (f-shamt 0) (f-func 20))
 447      (unimp srrdl)
 448      ())
 449
 450 (dni srulck "sram unlock" (MACH2000 USES-RT YIELD-INSN)
 451      "srulck $rt"
 452      (+ OP_COP2 (f-rs 1) rt (f-rd 0) (f-shamt 0) (f-func 22))
 453      (unimp srulck)
 454      ())
 455
 456 (dni srwr "sram write" (MACH2000 USES-RD USES-RT YIELD-INSN)
 457      "srwr $rt,$rd"
 458      (+ OP_COP2 (f-rs 1) rt rd (f-shamt 0) (f-func 17))
 459      (unimp srwr)
 460      ())
 461
 462 (dni srwru "sram write and unlock" (MACH2000 USES-RD USES-RT YIELD-INSN)
 463      "srwru $rt,$rd"
 464      (+ OP_COP2 (f-rs 1) rt rd (f-shamt 0) (f-func 21))
 465      (unimp srwru)
 466      ())
 467
 468 (dni trapqfl "yield if dma queue full" (MACH2000 YIELD-INSN)
 469      "trapqfl"
 470      (+ OP_COP3 (f-rs 1) (f-rt 0) (f-rd 0) (f-shamt 0) (f-func 8))
 471      (unimp trapqfl)
 472      ())
 473
 474 (dni trapqne "yield if dma queue not empty" (MACH2000 YIELD-INSN)
 475      "trapqne"
 476      (+ OP_COP3 (f-rs 1) (f-rt 0) (f-rd 0) (f-shamt 0) (f-func 9))
 477      (unimp trapqne)
 478      ())
 479
 480 (dni traprel "traprel" (MACH2000 USES-RT YIELD-INSN)
 481      "traprel $rt"
 482      (+ OP_COP3 (f-rs 1) rt (f-rd 0) (f-shamt 0) (f-func 10))
 483      (unimp traprel)
 484      ())
 485
 486 (dni wb "dma write bytes" (MACH2000 USES-RD USES-RT YIELD-INSN)
 487      "wb $rd,$rt"
 488      (+ OP_COP3 (f-rs 1) rt rd (f-shamt 0) (f-func 0))
 489      (unimp wb)
 490      ())
 491
 492 (dni wbu "dma write bytes and unlock" (MACH2000 USES-RD USES-RT YIELD-INSN)
 493      "wbu $rd,$rt"
 494      (+ OP_COP3 (f-rs 1) rt rd (f-shamt 0) (f-func 1))
 495      (unimp wbu)
 496      ())
 497
 498 (dni wbr1 "dma write bytes using r1" (MACH2000 USES-RT YIELD-INSN)
 499      "wbr1 $rt,$_index,$count"
 500      (+ OP_COP3 (f-rs 16) rt count _index)
 501      (unimp wbr1)
 502      ())
 503
 504 (dni wbr1u "dma write bytes using r1 and unlock" (MACH2000 USES-RT YIELD-INSN)
 505      "wbr1u $rt,$_index,$count"
 506      (+ OP_COP3 (f-rs 17) rt count _index)
 507      (unimp wbr1u)
 508      ())
 509
 510 (dni wbr30 "dma write bytes using r30" (MACH2000 USES-RT YIELD-INSN)
 511      "wbr30 $rt,$_index,$count"
 512      (+ OP_COP3 (f-rs 18) rt count _index)
 513      (unimp wbr30)
 514      ())
 515
 516 (dni wbr30u "dma write bytes using r30 and unlock" (MACH2000 USES-RT YIELD-INSN)
 517      "wbr30u $rt,$_index,$count"
 518      (+ OP_COP3 (f-rs 19) rt count _index)
 519      (unimp wbr30u)
 520      ())
 521
 522 (dni wx "dma write word64s" (MACH2000 USES-RD USES-RT YIELD-INSN)
 523      "wx $rd,$rt"
 524      (+ OP_COP3 (f-rs 1) rt rd (f-shamt 0) (f-func 2))
 525      (unimp wx)
 526      ())
 527
 528 (dni wxu "dma write word64s and unlock" (MACH2000 USES-RD USES-RT YIELD-INSN)
 529      "wxu $rd,$rt"
 530      (+ OP_COP3 (f-rs 1) rt rd (f-shamt 0) (f-func 3))
 531      (unimp wxu)
 532      ())
 533
 534 (dni wxr1 "dma write word64s using r1" (MACH2000 USES-RT YIELD-INSN)
 535      "wxr1 $rt,$_index,$count"
 536      (+ OP_COP3 (f-rs 20) rt count _index)
 537      (unimp wxr1)
 538      ())
 539
 540 (dni wxr1u "dma write word64s using r1 and unlock" (MACH2000 USES-RT YIELD-INSN)
 541      "wxr1u $rt,$_index,$count"
 542      (+ OP_COP3 (f-rs 21) rt count _index)
 543      (unimp wxr1u)
 544      ())
 545
 546 (dni wxr30 "dma write word64s using r30" (MACH2000 USES-RT YIELD-INSN)
 547      "wxr30 $rt,$_index,$count"
 548      (+ OP_COP3 (f-rs 22) rt count _index)
 549      (unimp wxr30)
 550      ())
 551
 552 (dni wxr30u "dma write word64s using r30 and unlock" (MACH2000 USES-RT YIELD-INSN)
 553      "wxr30u $rt,$_index,$count"
 554      (+ OP_COP3 (f-rs 23) rt count _index)
 555      (unimp wxr30u)
 556      ())
 557
 558
 559 ; Load/Store instructions.
 560
 561 (dni ldw "load double word" (MACH2000 EVEN-REG-NUM LOAD-DELAY USES-RT)
 562      "ldw $rt,$lo16($base)"
 563      (+ OP_LDW base rt lo16)
 564      (sequence ((SI addr))
 565                (set addr (and (add base lo16) (inv 3)))
 566                (set (reg h-gr (add (ifield f-rt) 1)) (mem SI addr))
 567                (set rt (mem SI (add addr 4))))
 568      ())
 569
 570 (dni sdw "store double word" (MACH2000 EVEN-REG-NUM USES-RT)
 571      "sdw $rt,$lo16($base)"
 572      (+ OP_SDW base rt lo16)
 573      (sequence ((SI addr))
 574                (set addr (and (add base lo16) (inv 3)))
 575                (set (mem SI (add addr 4)) rt)
 576                (set (mem SI addr) (reg h-gr (add (ifield f-rt) 1))))
 577      ())
 578
 579
 580 ; Jump instructions
 581
 582 (dni j "jump" (MACH2000)
 583      "j $jmptarg"
 584      (+ OP_J (f-rsrvd 0) jmptarg)
 585      (delay 1 (set pc jmptarg))
 586      ())
 587
 588 (dni jal "jump and link" (MACH2000 USES-R31)
 589      "jal $jmptarg"
 590      (+ OP_JAL (f-rsrvd 0) jmptarg)
 591      (delay 1
 592             (sequence ()
 593                       (set (reg h-gr 31) (add pc 8))
 594                       (set pc jmptarg)))
 595      ())
 596
 597 (dni bmb "branch if matching byte-lane" (MACH2000 USES-RS USES-RT)
 598      "bmb $rs,$rt,$offset"
 599      (+ OP_BMB rs rt offset)
 600      (sequence ((BI branch?))
 601                (set branch? 0)
 602                (if (eq (and rs #xFF) (and rt #xFF))
 603                    (set branch? 1))
 604                (if (eq (and rs #xFF00) (and rt #xFF00))
 605                    (set branch? 1))
 606                (if (eq (and rs #xFF0000) (and rt #xFF0000))
 607                    (set branch? 1))
 608                (if (eq (and rs #xFF000000) (and rt #xFF000000))
 609                    (set branch? 1))
 610                (if branch?
 611                    (delay 1 (set pc offset))))
 612      ())
 613
 614
 615 ; Macros
 616
 617 (dnmi ldw-base-0 "load double word - implied base 0" (MACH2000 EVEN-REG-NUM LOAD-DELAY USES-RT USES-RS NO-DIS)
 618       "ldw $rt,$lo16"
 619       (emit ldw rt lo16 (base 0))
 620 )
 621
 622 (dnmi sdw-base-0 "store double word - implied base 0" (MACH2000 EVEN-REG-NUM USES-RT NO-DIS)
 623       "sdw $rt,$lo16"
 624       (emit sdw rt lo16 (base 0))
 625 )
 626
 627
 628
 629
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 631