cpu/lm32.cpu

   1 ; Lattice Mico32 CPU description.  -*- Scheme -*-
   2 ; Copyright 2008-2013  Free Software Foundation, Inc.
   3 ; Contributed by Jon Beniston <jon@beniston.com>
   4 ;
   5 ; This file is part of the GNU Binutils.
   6 ;
   7 ; This program is free software; you can redistribute it and/or modify
   8 ; it under the terms of the GNU General Public License as published by
   9 ; the Free Software Foundation; either version 3 of the License, or
  10 ; (at your option) any later version.
  11 ;
  12 ; This program is distributed in the hope that it will be useful,
  13 ; but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 ; GNU General Public License for more details.
  16 ;
  17 ; You should have received a copy of the GNU General Public License
  18 ; along with this program; if not, write to the Free Software
  19 ; Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  20 ; MA 02110-1301, USA.
  21
  22 (include "simplify.inc")
  23
  24 (define-arch
  25   (name lm32) ; name of cpu family
  26   (comment "Lattice Mico32")
  27   (default-alignment aligned)
  28   (insn-lsb0? #t)
  29   (machs lm32)
  30   (isas lm32)
  31 )
  32
  33 \f
  34 ; Instruction sets.
  35
  36 (define-isa
  37   (name lm32)
  38   (comment "Lattice Mico32 ISA")
  39   (default-insn-word-bitsize 32)
  40   (default-insn-bitsize 32)
  41   (base-insn-bitsize 32)
  42   (decode-assist (31 30 29 28 27 26))
  43 )
  44
  45 \f
  46 ; Cpu family definitions.
  47
  48 (define-cpu
  49   ; cpu names must be distinct from the architecture name and machine name
  50   (name lm32bf)
  51   (comment "Lattice Mico32 CPU")
  52   (endian big)
  53   (word-bitsize 32)
  54 )
  55
  56 (define-mach
  57   (name lm32)
  58   (comment "Lattice Mico32 MACH")
  59   (cpu lm32bf)
  60 )
  61
  62 (define-model
  63   (name lm32)
  64   (comment "Lattice Mico32 reference implementation")
  65   (mach lm32)
  66   (unit u-exec "Execution unit" ()
  67     1 1 () () () ())
  68 )
  69
  70 \f
  71 ; Hardware elements.
  72
  73 (dnh h-pc "Program counter" (PC) (pc) () () ())
  74
  75 (dnh h-gr "General purpose registers"
  76   ()
  77   (register SI (32))
  78   (keyword "" (
  79                (gp 26) (fp 27) (sp 28) (ra 29) (ea 30) (ba 31)
  80                (r0 0) (r1 1) (r2 2) (r3 3)
  81                (r4 4) (r5 5) (r6 6) (r7 7)
  82                (r8 8) (r9 9) (r10 10) (r11 11)
  83                (r12 12) (r13 13) (r14 14) (r15 15)
  84                (r16 16) (r17 17) (r18 18) (r19 19)
  85                (r20 20) (r21 21) (r22 22) (r23 23)
  86                (r24 24) (r25 25) (r26 26) (r27 27)
  87                (r28 28) (r29 29) (r30 30) (r31 31)
  88               )
  89   )
  90   () ()
  91 )
  92
  93 (dnh h-csr "Control and status registers"
  94   ()
  95   (register SI (32))
  96   (keyword "" (
  97                (IE 0) (IM 1) (IP 2)
  98                (ICC 3) (DCC 4)
  99                (CC 5)
 100                (CFG 6)
 101                (EBA 7)
 102                (DC 8)
 103                (DEBA 9)
 104                (CFG2 10)
 105                (JTX 14) (JRX 15)
 106                (BP0 16) (BP1 17) (BP2 18) (BP3 19)
 107                (WP0 24) (WP1 25) (WP2 26) (WP3 27)
 108                (PSW 29) (TLBVADDR 30) (TLBPADDR 31) (TLBBADVADDR 31)
 109               )
 110   )
 111   () ()
 112 )
 113
 114 \f
 115 ; Instruction fields.
 116
 117 (dnf f-opcode   "opcode field"                () 31  6)
 118 (dnf f-r0       "register index 0 field"      () 25  5)
 119 (dnf f-r1       "register index 1 field"      () 20  5)
 120 (dnf f-r2       "register index 2 field"      () 15  5)
 121 (dnf f-resv0    "reserved"                    (RESERVED) 10 11)
 122 (dnf f-shift    "shift amount field"          ()  4  5)
 123 (df  f-imm      "signed immediate field"      () 15 16 INT #f #f)
 124 (dnf f-uimm     "unsigned immediate field"    () 15 16)
 125 (dnf f-csr      "csr field"                   () 25  5)
 126 (dnf f-user     "user defined field"          () 10 11)
 127 (dnf f-exception "exception field"            () 25 26)
 128
 129 (df f-branch "branch offset field" (PCREL-ADDR) 15 16 INT
 130         ((value pc) (sra SI (sub SI value pc) 2))
 131         ((value pc) (add SI pc (sra SI (sll SI value 16) 14)))
 132 )
 133 (df f-call "call offset field" (PCREL-ADDR) 25 26 INT
 134         ((value pc) (sra SI (sub SI value pc) 2))
 135         ((value pc) (add SI pc (sra SI (sll SI value 6) 4)))
 136 )
 137
 138 \f
 139 ; Operands.
 140
 141 (dnop r0        "register 0"            () h-gr         f-r0)
 142 (dnop r1        "register 1"            () h-gr         f-r1)
 143 (dnop r2        "register 2"            () h-gr         f-r2)
 144 (dnop shift     "shift amout"           () h-uint       f-shift)
 145 (dnop imm       "signed immediate"      () h-sint       f-imm)
 146 (dnop uimm      "unsigned immediate"    () h-uint       f-uimm)
 147 (dnop branch    "branch offset"         () h-iaddr      f-branch)
 148 (dnop call      "call offset"           () h-iaddr      f-call)
 149 (dnop csr       "csr"                   () h-csr        f-csr)
 150 (dnop user      "user"                  () h-uint       f-user)
 151 (dnop exception "exception"             () h-uint       f-exception)
 152
 153 (define-operand
 154   (name hi16)
 155   (comment "high 16-bit immediate")
 156   (attrs)
 157   (type h-uint)
 158   (index f-uimm)
 159   (handlers (parse "hi16"))
 160 )
 161
 162 (define-operand
 163   (name lo16)
 164   (comment "low 16-bit immediate")
 165   (attrs)
 166   (type h-uint)
 167   (index f-uimm)
 168   (handlers (parse "lo16"))
 169 )
 170
 171 (define-operand
 172   (name gp16)
 173   (comment "gp relative 16-bit immediate")
 174   (attrs)
 175   (type h-sint)
 176   (index f-imm)
 177   (handlers (parse "gp16"))
 178 )
 179
 180 (define-operand
 181   (name got16)
 182   (comment "got 16-bit immediate")
 183   (attrs)
 184   (type h-sint)
 185   (index f-imm)
 186   (handlers (parse "got16"))
 187 )
 188
 189 (define-operand
 190   (name gotoffhi16)
 191   (comment "got offset high 16-bit immediate")
 192   (attrs)
 193   (type h-sint)
 194   (index f-imm)
 195   (handlers (parse "gotoff_hi16"))
 196 )
 197
 198 (define-operand
 199   (name gotofflo16)
 200   (comment "got offset low 16-bit immediate")
 201   (attrs)
 202   (type h-sint)
 203   (index f-imm)
 204   (handlers (parse "gotoff_lo16"))
 205 )
 206
 207 \f
 208 ; Enumerations.
 209
 210 (define-normal-insn-enum
 211   opcodes "opcodes" () OP_ f-opcode
 212   (("ADD"       45)
 213    ("ADDI"      13)
 214    ("AND"       40)
 215    ("ANDI"      8)
 216    ("ANDHI"     24)
 217    ("B"         48)
 218    ("BI"        56)
 219    ("BE"        17)
 220    ("BG"        18)
 221    ("BGE"       19)
 222    ("BGEU"      20)
 223    ("BGU"       21)
 224    ("BNE"       23)
 225    ("CALL"      54)
 226    ("CALLI"     62)
 227    ("CMPE"      57)
 228    ("CMPEI"     25)
 229    ("CMPG"      58)
 230    ("CMPGI"     26)
 231    ("CMPGE"     59)
 232    ("CMPGEI"    27)
 233    ("CMPGEU"    60)
 234    ("CMPGEUI"   28)
 235    ("CMPGU"     61)
 236    ("CMPGUI"    29)
 237    ("CMPNE"     63)
 238    ("CMPNEI"    31)
 239    ("DIVU"      35)
 240    ("LB"        4)
 241    ("LBU"       16)
 242    ("LH"        7)
 243    ("LHU"       11)
 244    ("LW"        10)
 245    ("MODU"      49)
 246    ("MUL"       34)
 247    ("MULI"      2)
 248    ("NOR"       33)
 249    ("NORI"      1)
 250    ("OR"        46)
 251    ("ORI"       14)
 252    ("ORHI"      30)
 253    ("RAISE"     43)
 254    ("RCSR"      36)
 255    ("SB"        12)
 256    ("SEXTB"     44)
 257    ("SEXTH"     55)
 258    ("SH"        3)
 259    ("SL"        47)
 260    ("SLI"       15)
 261    ("SR"        37)
 262    ("SRI"       5)
 263    ("SRU"       32)
 264    ("SRUI"      0)
 265    ("SUB"       50)
 266    ("SW"        22)
 267    ("USER"      51)
 268    ("WCSR"      52)
 269    ("XNOR"      41)
 270    ("XNORI"     9)
 271    ("XOR"       38)
 272    ("XORI"      6)
 273   )
 274 )
 275
 276 \f
 277 ; Instructions. Note: Reg-reg must come before reg-imm.
 278
 279 (dni add "add" ()
 280         "add $r2,$r0,$r1"
 281         (+ OP_ADD r0 r1 r2 (f-resv0 0))
 282         (set r2 (add r0 r1))
 283         ()
 284 )
 285
 286 (dni addi "add immediate" ()
 287         "addi $r1,$r0,$imm"
 288         (+ OP_ADDI r0 r1 imm)
 289         (set r1 (add r0 (ext SI (trunc HI imm))))
 290         ()
 291 )
 292
 293 (dni and "and" ()
 294         "and $r2,$r0,$r1"
 295         (+ OP_AND r0 r1 r2 (f-resv0 0))
 296         (set r2 (and r0 r1))
 297         ()
 298 )
 299
 300 (dni andi "and immediate" ()
 301         "andi $r1,$r0,$uimm"
 302         (+ OP_ANDI r0 r1 uimm)
 303         (set r1 (and r0 (zext SI uimm)))
 304         ()
 305 )
 306
 307 (dni andhii "and high immediate" ()
 308         "andhi $r1,$r0,$hi16"
 309         (+ OP_ANDHI r0 r1 hi16)
 310         (set r1 (and r0 (sll SI hi16 16)))
 311         ()
 312 )
 313
 314 (dni b "branch" ()
 315         "b $r0"
 316         (+ OP_B r0 (f-r1 0) (f-r2 0) (f-resv0 0))
 317         (set pc (c-call USI "@cpu@_b_insn" r0 f-r0))
 318         ()
 319 )
 320
 321 (dni bi "branch immediate" ()
 322         "bi $call"
 323         (+ OP_BI call)
 324         (set pc (ext SI call))
 325         ()
 326 )
 327
 328 (dni be "branch equal" ()
 329         "be $r0,$r1,$branch"
 330         (+ OP_BE r0 r1 branch)
 331         (if (eq r0 r1)
 332             (set pc branch)
 333         )
 334         ()
 335 )
 336
 337 (dni bg "branch greater" ()
 338         "bg $r0,$r1,$branch"
 339         (+ OP_BG r0 r1 branch)
 340         (if (gt r0 r1)
 341             (set pc branch)
 342         )
 343         ()
 344 )
 345
 346 (dni bge "branch greater or equal" ()
 347         "bge $r0,$r1,$branch"
 348         (+ OP_BGE r0 r1 branch)
 349         (if (ge r0 r1)
 350             (set pc branch)
 351         )
 352         ()
 353 )
 354
 355 (dni bgeu "branch greater or equal unsigned" ()
 356         "bgeu $r0,$r1,$branch"
 357         (+ OP_BGEU r0 r1 branch)
 358         (if (geu r0 r1)
 359             (set pc branch)
 360         )
 361         ()
 362 )
 363
 364 (dni bgu "branch greater unsigned" ()
 365         "bgu $r0,$r1,$branch"
 366         (+ OP_BGU r0 r1 branch)
 367         (if (gtu r0 r1)
 368             (set pc branch)
 369         )
 370         ()
 371 )
 372
 373 (dni bne "branch not equal" ()
 374         "bne $r0,$r1,$branch"
 375         (+ OP_BNE r0 r1 branch)
 376         (if (ne r0 r1)
 377             (set pc branch)
 378         )
 379         ()
 380 )
 381
 382 (dni call "call" ()
 383         "call $r0"
 384         (+ OP_CALL r0 (f-r1 0) (f-r2 0) (f-resv0 0))
 385         (sequence ()
 386                 (set (reg h-gr 29) (add pc 4))
 387                 (set pc r0)
 388         )
 389         ()
 390 )
 391
 392 (dni calli "call immediate" ()
 393         "calli $call"
 394         (+ OP_CALLI call)
 395         (sequence ()
 396                 (set (reg h-gr 29) (add pc 4))
 397                 (set pc (ext SI call))
 398         )
 399         ()
 400 )
 401
 402 (dni cmpe "compare equal" ()
 403         "cmpe $r2,$r0,$r1"
 404         (+ OP_CMPE r0 r1 r2 (f-resv0 0))
 405         (set r2 (eq SI r0 r1))
 406         ()
 407 )
 408
 409 (dni cmpei "compare equal immediate" ()
 410         "cmpei $r1,$r0,$imm"
 411         (+ OP_CMPEI r0 r1 imm)
 412         (set r1 (eq SI r0 (ext SI (trunc HI imm))))
 413         ()
 414 )
 415
 416 (dni cmpg "compare greater than" ()
 417         "cmpg $r2,$r0,$r1"
 418         (+ OP_CMPG r0 r1 r2 (f-resv0 0))
 419         (set r2 (gt SI r0 r1))
 420         ()
 421 )
 422
 423 (dni cmpgi "compare greater than immediate" ()
 424         "cmpgi $r1,$r0,$imm"
 425         (+ OP_CMPGI r0 r1 imm)
 426         (set r1 (gt SI r0 (ext SI (trunc HI imm))))
 427         ()
 428 )
 429
 430 (dni cmpge "compare greater or equal" ()
 431         "cmpge $r2,$r0,$r1"
 432         (+ OP_CMPGE r0 r1 r2 (f-resv0 0))
 433         (set r2 (ge SI r0 r1))
 434         ()
 435 )
 436
 437 (dni cmpgei "compare greater or equal immediate" ()
 438         "cmpgei $r1,$r0,$imm"
 439         (+ OP_CMPGEI r0 r1 imm)
 440         (set r1 (ge SI r0 (ext SI (trunc HI imm))))
 441         ()
 442 )
 443
 444 (dni cmpgeu "compare greater or equal unsigned" ()
 445         "cmpgeu $r2,$r0,$r1"
 446         (+ OP_CMPGEU r0 r1 r2 (f-resv0 0))
 447         (set r2 (geu SI r0 r1))
 448         ()
 449 )
 450
 451 (dni cmpgeui "compare greater or equal unsigned immediate" ()
 452         "cmpgeui $r1,$r0,$uimm"
 453         (+ OP_CMPGEUI r0 r1 uimm)
 454         (set r1 (geu SI r0 (zext SI uimm)))
 455         ()
 456 )
 457
 458 (dni cmpgu "compare greater than unsigned" ()
 459         "cmpgu $r2,$r0,$r1"
 460         (+ OP_CMPGU r0 r1 r2 (f-resv0 0))
 461         (set r2 (gtu SI r0 r1))
 462         ()
 463 )
 464
 465 (dni cmpgui "compare greater than unsigned immediate" ()
 466         "cmpgui $r1,$r0,$uimm"
 467         (+ OP_CMPGUI r0 r1 uimm)
 468         (set r1 (gtu SI r0 (zext SI uimm)))
 469         ()
 470 )
 471
 472 (dni cmpne "compare not equal" ()
 473         "cmpne $r2,$r0,$r1"
 474         (+ OP_CMPNE r0 r1 r2 (f-resv0 0))
 475         (set r2 (ne SI r0 r1))
 476         ()
 477 )
 478
 479 (dni cmpnei "compare not equal immediate" ()
 480         "cmpnei $r1,$r0,$imm"
 481         (+ OP_CMPNEI r0 r1 imm)
 482         (set r1 (ne SI r0 (ext SI (trunc HI imm))))
 483         ()
 484 )
 485
 486 (dni divu "unsigned divide" ()
 487         "divu $r2,$r0,$r1"
 488         (+ OP_DIVU r0 r1 r2 (f-resv0 0))
 489         (set pc (c-call USI "@cpu@_divu_insn" pc f-r0 f-r1 f-r2))
 490         ()
 491 )
 492
 493 (dni lb "load byte" ()
 494         "lb $r1,($r0+$imm)"
 495         (+ OP_LB r0 r1 imm)
 496         (set r1 (ext SI (mem QI (add r0 (ext SI (trunc HI imm))))))
 497         ()
 498 )
 499
 500 (dni lbu "load byte unsigned" ()
 501         "lbu $r1,($r0+$imm)"
 502         (+ OP_LBU r0 r1 imm)
 503         (set r1 (zext SI (mem QI (add r0 (ext SI (trunc HI imm))))))
 504         ()
 505 )
 506
 507 (dni lh "load halfword" ()
 508         "lh $r1,($r0+$imm)"
 509         (+ OP_LH r0 r1 imm)
 510         (set r1 (ext SI (mem HI (add r0 (ext SI (trunc HI imm))))))
 511         ()
 512 )
 513
 514 (dni lhu "load halfword unsigned" ()
 515         "lhu $r1,($r0+$imm)"
 516         (+ OP_LHU r0 r1 imm)
 517         (set r1 (zext SI (mem HI (add r0 (ext SI (trunc HI imm))))))
 518         ()
 519 )
 520
 521 (dni lw "load word" ()
 522         "lw $r1,($r0+$imm)"
 523         (+ OP_LW r0 r1 imm)
 524         (set r1 (mem SI (add r0 (ext SI (trunc HI imm)))))
 525         ()
 526 )
 527
 528 (dni modu "unsigned modulus" ()
 529         "modu $r2,$r0,$r1"
 530         (+ OP_MODU r0 r1 r2 (f-resv0 0))
 531         (set pc (c-call USI "@cpu@_modu_insn" pc f-r0 f-r1 f-r2))
 532         ()
 533 )
 534
 535 (dni mul "mulitply" ()
 536         "mul $r2,$r0,$r1"
 537         (+ OP_MUL r0 r1 r2 (f-resv0 0))
 538         (set r2 (mul r0 r1))
 539         ()
 540 )
 541
 542 (dni muli "multiply immediate" ()
 543         "muli $r1,$r0,$imm"
 544         (+ OP_MULI r0 r1 imm)
 545         (set r1 (mul r0 (ext SI (trunc HI imm))))
 546         ()
 547 )
 548
 549 (dni nor "nor" ()
 550         "nor $r2,$r0,$r1"
 551         (+ OP_NOR r0 r1 r2 (f-resv0 0))
 552         (set r2 (inv (or r0 r1)))
 553         ()
 554 )
 555
 556 (dni nori "nor immediate" ()
 557         "nori $r1,$r0,$uimm"
 558         (+ OP_NORI r0 r1 uimm)
 559         (set r1 (inv (or r0 (zext SI uimm))))
 560         ()
 561 )
 562
 563 (dni or "or" ()
 564         "or $r2,$r0,$r1"
 565         (+ OP_OR r0 r1 r2 (f-resv0 0))
 566         (set r2 (or r0 r1))
 567         ()
 568 )
 569
 570 (dni ori "or immediate" ()
 571         "ori $r1,$r0,$lo16"
 572         (+ OP_ORI r0 r1 lo16)
 573         (set r1 (or r0 (zext SI lo16)))
 574         ()
 575 )
 576
 577 (dni orhii "or high immediate" ()
 578         "orhi $r1,$r0,$hi16"
 579         (+ OP_ORHI r0 r1 hi16)
 580         (set r1 (or r0 (sll SI hi16 16)))
 581         ()
 582 )
 583
 584 (dni rcsr "read control or status register" ()
 585         "rcsr $r2,$csr"
 586         (+ OP_RCSR csr (f-r1 0) r2 (f-resv0 0))
 587         (set r2 csr)
 588         ()
 589 )
 590
 591 (dni sb "store byte" ()
 592         "sb ($r0+$imm),$r1"
 593         (+ OP_SB r0 r1 imm)
 594         (set (mem QI (add r0 (ext SI (trunc HI imm)))) r1)
 595         ()
 596 )
 597
 598 (dni sextb "sign extend byte" ()
 599         "sextb $r2,$r0"
 600         (+ OP_SEXTB r0 (f-r1 0) r2 (f-resv0 0))
 601         (set r2 (ext SI (trunc QI r0)))
 602         ()
 603 )
 604
 605 (dni sexth "sign extend half-word" ()
 606         "sexth $r2,$r0"
 607         (+ OP_SEXTH r0 (f-r1 0) r2 (f-resv0 0))
 608         (set r2 (ext SI (trunc HI r0)))
 609         ()
 610 )
 611
 612 (dni sh "store halfword" ()
 613         "sh ($r0+$imm),$r1"
 614         (+ OP_SH r0 r1 imm)
 615         (set (mem HI (add r0 (ext SI (trunc HI imm)))) r1)
 616         ()
 617 )
 618
 619 (dni sl "shift left" ()
 620         "sl $r2,$r0,$r1"
 621         (+ OP_SL r0 r1 r2 (f-resv0 0))
 622         (set r2 (sll SI r0 r1))
 623         ()
 624 )
 625
 626 (dni sli "shift left immediate" ()
 627         "sli $r1,$r0,$imm"
 628         (+ OP_SLI r0 r1 imm)
 629         (set r1 (sll SI r0 imm))
 630         ()
 631 )
 632
 633 (dni sr "shift right" ()
 634         "sr $r2,$r0,$r1"
 635         (+ OP_SR r0 r1 r2 (f-resv0 0))
 636         (set r2 (sra SI r0 r1))
 637         ()
 638 )
 639
 640 (dni sri "shift right immediate" ()
 641         "sri $r1,$r0,$imm"
 642         (+ OP_SRI r0 r1 imm)
 643         (set r1 (sra SI r0 imm))
 644         ()
 645 )
 646
 647 (dni sru "shift right unsigned" ()
 648         "sru $r2,$r0,$r1"
 649         (+ OP_SRU r0 r1 r2 (f-resv0 0))
 650         (set r2 (srl SI r0 r1))
 651         ()
 652 )
 653
 654 (dni srui "shift right unsigned immediate" ()
 655         "srui $r1,$r0,$imm"
 656         (+ OP_SRUI r0 r1 imm)
 657         (set r1 (srl SI r0 imm))
 658         ()
 659 )
 660
 661 (dni sub "subtract" ()
 662         "sub $r2,$r0,$r1"
 663         (+ OP_SUB r0 r1 r2 (f-resv0 0))
 664         (set r2 (sub r0 r1))
 665         ()
 666 )
 667
 668 (dni sw "store word" ()
 669         "sw ($r0+$imm),$r1"
 670         (+ OP_SW r0 r1 imm)
 671         (set (mem SI (add r0 (ext SI (trunc HI imm)))) r1)
 672         ()
 673 )
 674
 675 (dni user "user defined instruction" ()
 676         "user $r2,$r0,$r1,$user"
 677         (+ OP_USER r0 r1 r2 user)
 678         (set r2 (c-call SI "@cpu@_user_insn" r0 r1 user))
 679         ()
 680 )
 681
 682 (dni wcsr "write control or status register" ()
 683         "wcsr $csr,$r1"
 684         (+ OP_WCSR csr r1 (f-r2 0) (f-resv0 0))
 685         (c-call VOID "@cpu@_wcsr_insn" f-csr r1)
 686         ()
 687 )
 688
 689 (dni xor "xor" ()
 690         "xor $r2,$r0,$r1"
 691         (+ OP_XOR r0 r1 r2 (f-resv0 0))
 692         (set r2 (xor r0 r1))
 693         ()
 694 )
 695
 696 (dni xori "xor immediate" ()
 697         "xori $r1,$r0,$uimm"
 698         (+ OP_XORI r0 r1 uimm)
 699         (set r1 (xor r0 (zext SI uimm)))
 700         ()
 701 )
 702
 703 (dni xnor "xnor" ()
 704         "xnor $r2,$r0,$r1"
 705         (+ OP_XNOR r0 r1 r2 (f-resv0 0))
 706         (set r2 (inv (xor r0 r1)))
 707         ()
 708 )
 709
 710 (dni xnori "xnor immediate" ()
 711         "xnori $r1,$r0,$uimm"
 712         (+ OP_XNORI r0 r1 uimm)
 713         (set r1 (inv (xor r0 (zext SI uimm))))
 714         ()
 715 )
 716
 717 ; Pseudo instructions
 718
 719 (dni break "breakpoint" ()
 720         "break"
 721         (+ OP_RAISE (f-exception 2))
 722         (set pc (c-call USI "@cpu@_break_insn" pc))
 723         ()
 724 )
 725
 726 (dni scall "system call" ()
 727         "scall"
 728         (+ OP_RAISE (f-exception 7))
 729         (set pc (c-call USI "@cpu@_scall_insn" pc))
 730         ()
 731 )
 732
 733 (dni bret "return from breakpoint" (ALIAS)
 734         "bret"
 735         (+ OP_B (f-r0 31) (f-r1 0) (f-r2 0) (f-resv0 0))
 736         (set pc (c-call USI "@cpu@_bret_insn" r0))
 737         ()
 738 )
 739
 740 (dni eret "return from exception" (ALIAS)
 741         "eret"
 742         (+ OP_B (f-r0 30) (f-r1 0) (f-r2 0) (f-resv0 0))
 743         (set pc (c-call USI "@cpu@_eret_insn" r0))
 744         ()
 745 )
 746
 747 (dni ret "return" (ALIAS)
 748         "ret"
 749         (+ OP_B (f-r0 29) (f-r1 0) (f-r2 0) (f-resv0 0))
 750         (set pc r0)
 751         ()
 752 )
 753
 754 (dni mv "move" (ALIAS)
 755         "mv $r2,$r0"
 756         (+ OP_OR r0 (f-r1 0) r2 (f-resv0 0))
 757         (set r2 r0)
 758         ()
 759 )
 760
 761 (dni mvi "move immediate" (ALIAS)
 762         "mvi $r1,$imm"
 763         (+ OP_ADDI (f-r0 0) r1 imm)
 764         (set r1 (add r0 (ext SI (trunc HI imm))))
 765         ()
 766 )
 767
 768 (dni mvui "move unsigned immediate" (ALIAS)
 769         "mvu $r1,$lo16"
 770         (+ OP_ORI (f-r0 0) r1 lo16)
 771         (set r1 (zext SI lo16))
 772         ()
 773 )
 774
 775 (dni mvhi "move high immediate" (ALIAS)
 776         "mvhi $r1,$hi16"
 777         (+ OP_ORHI (f-r0 0) r1 hi16)
 778         (set r1 (or r0 (sll SI hi16 16)))
 779         ()
 780 )
 781
 782 (dni mva "move address" (ALIAS)
 783         "mva $r1,$gp16"
 784         (+ OP_ADDI (f-r0 26) r1 gp16)
 785         (set r1 (add r0 (ext SI (trunc HI gp16))))
 786         ()
 787 )
 788
 789 (dni not "not" (ALIAS)
 790         "not $r2,$r0"
 791         (+ OP_XNOR r0 (f-r1 0) r2 (f-resv0 0))
 792         (set r2 (inv r0))
 793         ()
 794 )
 795
 796 (dni nop "nop" (ALIAS)
 797         "nop"
 798         (+ OP_ADDI (f-r0 0) (f-r1 0) (f-imm 0))
 799         (set r0 r0)
 800         ()
 801 )
 802
 803 (dni lbgprel "load byte gp relative" (ALIAS)
 804         "lb $r1,$gp16"
 805         (+ OP_LB (f-r0 26) r1 gp16)
 806         (set r1 (ext SI (mem QI (add r0 (ext SI (trunc HI gp16))))))
 807         ()
 808 )
 809
 810 (dni lbugprel "load byte unsigned gp relative" (ALIAS)
 811         "lbu $r1,$gp16"
 812         (+ OP_LBU (f-r0 26) r1 gp16)
 813         (set r1 (zext SI (mem QI (add r0 (ext SI (trunc HI gp16))))))
 814         ()
 815 )
 816
 817 (dni lhgprel "load halfword gp relative" (ALIAS)
 818         "lh $r1,$gp16"
 819         (+ OP_LH (f-r0 26) r1 gp16)
 820         (set r1 (ext SI (mem HI (add r0 (ext SI (trunc HI gp16))))))
 821         ()
 822 )
 823
 824 (dni lhugprel "load halfword unsigned gp relative" (ALIAS)
 825         "lhu $r1,$gp16"
 826         (+ OP_LHU (f-r0 26) r1 gp16)
 827         (set r1 (zext SI (mem HI (add r0 (ext SI (trunc HI gp16))))))
 828         ()
 829 )
 830
 831 (dni lwgprel "load word gp relative" (ALIAS)
 832         "lw $r1,$gp16"
 833         (+ OP_LW (f-r0 26) r1 gp16)
 834         (set r1 (mem SI (add r0 (ext SI (trunc HI gp16)))))
 835         ()
 836 )
 837
 838 (dni sbgprel "store byte gp relative" (ALIAS)
 839         "sb $gp16,$r1"
 840         (+ OP_SB (f-r0 26) r1 gp16)
 841         (set (mem QI (add r0 (ext SI (trunc HI gp16)))) r1)
 842         ()
 843 )
 844
 845 (dni shgprel "store halfword gp relative" (ALIAS)
 846         "sh $gp16,$r1"
 847         (+ OP_SH (f-r0 26) r1 gp16)
 848         (set (mem HI (add r0 (ext SI (trunc HI gp16)))) r1)
 849         ()
 850 )
 851
 852 (dni swgprel "store word gp relative" (ALIAS)
 853         "sw $gp16,$r1"
 854         (+ OP_SW (f-r0 26) r1 gp16)
 855         (set (mem SI (add r0 (ext SI (trunc HI gp16)))) r1)
 856         ()
 857 )
 858
 859 (dni lwgotrel "load word got relative" (ALIAS)
 860         "lw $r1,(gp+$got16)"
 861         (+ OP_LW (f-r0 26) r1 got16)
 862         (set r1 (mem SI (add r0 (ext SI (trunc HI got16)))))
 863         ()
 864 )
 865
 866 (dni orhigotoffi "or high got offset immediate" (ALIAS)
 867         "orhi $r1,$r0,$gotoffhi16"
 868         (+ OP_ORHI r0 r1 gotoffhi16)
 869         (set r1 (or r0 (sll SI gotoffhi16 16)))
 870         ()
 871 )
 872
 873 (dni addgotoff "add got offset" (ALIAS)
 874         "addi $r1,$r0,$gotofflo16"
 875         (+ OP_ADDI r0 r1 gotofflo16)
 876         (set r1 (add r0 (ext SI (trunc HI gotofflo16))))
 877         ()
 878 )
 879
 880 (dni swgotoff "store word got offset" (ALIAS)
 881         "sw ($r0+$gotofflo16),$r1"
 882         (+ OP_SW r0 r1 gotofflo16)
 883         (set (mem SI (add r0 (ext SI (trunc HI gotofflo16)))) r1)
 884         ()
 885 )
 886
 887 (dni lwgotoff "load word got offset" (ALIAS)
 888         "lw $r1,($r0+$gotofflo16)"
 889         (+ OP_LW r0 r1 gotofflo16)
 890         (set r1 (mem SI (add r0 (ext SI (trunc HI gotofflo16)))))
 891         ()
 892 )
 893
 894 (dni shgotoff "store half word got offset" (ALIAS)
 895         "sh ($r0+$gotofflo16),$r1"
 896         (+ OP_SH r0 r1 gotofflo16)
 897         (set (mem HI (add r0 (ext SI (trunc HI gotofflo16)))) r1)
 898         ()
 899 )
 900
 901 (dni lhgotoff "load half word got offset" (ALIAS)
 902         "lh $r1,($r0+$gotofflo16)"
 903         (+ OP_LH r0 r1 gotofflo16)
 904         (set r1 (ext SI (mem HI (add r0 (ext SI (trunc HI gotofflo16))))))
 905         ()
 906 )
 907
 908 (dni lhugotoff "load half word got offset unsigned" (ALIAS)
 909         "lhu $r1,($r0+$gotofflo16)"
 910         (+ OP_LHU r0 r1 gotofflo16)
 911         (set r1 (zext SI (mem HI (add r0 (ext SI (trunc HI gotofflo16))))))
 912         ()
 913 )
 914
 915 (dni sbgotoff "store byte got offset" (ALIAS)
 916         "sb ($r0+$gotofflo16),$r1"
 917         (+ OP_SB r0 r1 gotofflo16)
 918         (set (mem QI (add r0 (ext SI (trunc HI gotofflo16)))) r1)
 919         ()
 920 )
 921
 922 (dni lbgotoff "load byte got offset" (ALIAS)
 923         "lb $r1,($r0+$gotofflo16)"
 924         (+ OP_LB r0 r1 gotofflo16)
 925         (set r1 (ext SI (mem QI (add r0 (ext SI (trunc HI gotofflo16))))))
 926         ()
 927 )
 928
 929 (dni lbugotoff "load byte got offset unsigned" (ALIAS)
 930         "lbu $r1,($r0+$gotofflo16)"
 931         (+ OP_LBU r0 r1 gotofflo16)
 932         (set r1 (zext SI (mem QI (add r0 (ext SI (trunc HI gotofflo16))))))
 933         ()
 934 )