cpu/iq2000.cpu

   1 ; IQ2000/IQ10 Common CPU description. -*- Scheme -*-
   2 ; Copyright 2001, 2002, 2007, 2009 Free Software Foundation, Inc.
   3 ;
   4 ; Contributed by Red Hat Inc; developed under contract from Fujitsu.
   5 ;
   6 ; This file is part of the GNU Binutils.
   7 ;
   8 ; This program is free software; you can redistribute it and/or modify
   9 ; it under the terms of the GNU General Public License as published by
  10 ; the Free Software Foundation; either version 3 of the License, or
  11 ; (at your option) any later version.
  12 ;
  13 ; This program is distributed in the hope that it will be useful,
  14 ; but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 ; GNU General Public License for more details.
  17 ;
  18 ; You should have received a copy of the GNU General Public License
  19 ; along with this program; if not, write to the Free Software
  20 ; Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  21 ; MA 02110-1301, USA.
  22
  23 (include "simplify.inc")
  24
  25 (define-arch
  26   (name iq2000)
  27   (comment "IQ2000 architecture")
  28   (insn-lsb0? #t)
  29   (machs iq2000 iq10)
  30   (isas iq2000)
  31 )
  32
  33 (define-isa
  34   (name iq2000)
  35   (comment "Basic IQ2000 instruction set")
  36   (default-insn-word-bitsize 32)
  37   (default-insn-bitsize 32)
  38   (base-insn-bitsize 32)
  39   (decode-assist (31 30 29 28 27 26))
  40 )
  41
  42 (define-cpu
  43   (name iq2000bf)
  44   (comment "IQ2000 family")
  45   (endian big)
  46   (word-bitsize 32)
  47   (file-transform "")
  48 )
  49
  50 (define-cpu
  51   (name iq10bf)
  52   (comment "IQ10 coprocessor family")
  53   (endian big)
  54   (word-bitsize 32)
  55   (file-transform "")
  56
  57 )
  58
  59 (define-mach
  60   (name iq2000)
  61   (comment "IQ2000 packet processing engine")
  62   (cpu iq2000bf)
  63   (isas iq2000)
  64 )
  65
  66 (define-mach
  67   (name iq10)
  68   (comment "IQ10 coprocessor")
  69   (cpu iq10bf)
  70   (isas iq2000)
  71 )
  72
  73 (define-model
  74   (name iq2000)
  75   (comment "IQ2000 microprocessor")
  76   (mach iq2000)
  77   (unit u-exec "Execution Unit" ()
  78         1 1 ; issue done
  79         () () () ())
  80 )
  81
  82 (define-model
  83   (name iq10)
  84   (comment "IQ10 coprocessor")
  85   (mach iq10)
  86   (unit u-exec "Execution Unit" ()
  87         1 1 ; issue done
  88         () () () ())
  89 )
  90
  91 ; Macros to simplify MACH attribute specification.
  92
  93 (define-pmacro MACH2000 (MACH iq2000))
  94 (define-pmacro MACH10 (MACH iq10))
  95
  96 \f
  97 ; Hardware elements.
  98
  99 (define-hardware
 100   (name h-pc)
 101   (comment "program counter")
 102   (attrs PC PROFILE (ISA iq2000))
 103   (type pc)
 104   (get () (c-call USI "get_h_pc"))
 105   (set (newval) (c-call VOID "set_h_pc" newval))
 106 )
 107 ; FIXME: it would be nice if the hardwired zero in R0 could be
 108 ; specified as a virtual hardware element, with one less register in
 109 ; the register file proper.
 110
 111 (define-keyword
 112   (name gr-names)
 113   (print-name h-gr)
 114   (values (r0 0)   (%0 0)   (r1 1)   (%1 1)   (r2 2)   (%2 2)   (r3 3)   (%3 3)
 115           (r4 4)   (%4 4)   (r5 5)   (%5 5)   (r6 6)   (%6 6)   (r7 7)   (%7 7)
 116           (r8 8)   (%8 8)   (r9 9)   (%9 9)   (r10 10) (%10 10) (r11 11) (%11 11)
 117           (r12 12) (%12 12) (r13 13) (%13 13) (r14 14) (%14 14) (r15 15) (%15 15)
 118           (r16 16) (%16 16) (r17 17) (%17 17) (r18 18) (%18 18) (r19 19) (%19 19)
 119           (r20 20) (%20 20) (r21 21) (%21 21) (r22 22) (%22 22) (r23 23) (%23 23)
 120           (r24 24) (%24 24) (r25 25) (%25 25) (r26 26) (%26 26) (r27 27) (%27 27)
 121           (r28 28) (%28 28) (r29 29) (%29 29) (r30 30) (%30 30) (r31 31) (%31 31))
 122 )
 123
 124 (define-hardware
 125   (name h-gr)
 126   (comment "General purpose registers")
 127 ;  (attrs (ISA iq2000) CACHE-ADDR)
 128   (type register SI (32))
 129   (indices extern-keyword gr-names)
 130   (get (idx)
 131        (cond SI
 132              ((eq idx 0) (const 0))
 133              (else (raw-reg h-gr idx))))
 134   (set (idx newval)
 135        (cond VOID
 136              ((eq idx 0) (nop))
 137              (else (set (raw-reg h-gr idx) newval))))
 138 )
 139
 140 \f
 141 ; Instruction fields.
 142
 143 (dnf f-opcode   "opcode field"                  ()  31  6)
 144 (dnf f-rs       "register field Rs"             ()  25  5)
 145 (dnf f-rt       "register field Rt"             ()  20  5)
 146 (dnf f-rd       "register field Rd"             ()  15  5)
 147 (dnf f-shamt    "shift amount field"            ()  10  5)
 148 (dnf f-cp-op    "coprocessor op field"          ()  10  3)
 149 (dnf f-cp-op-10 "coprocessor op field for CAM"  ()  10  5)
 150 (dnf f-cp-grp   "coprocessor group field"       ()   7  2)
 151 (dnf f-func     "function field"                ()   5  6)
 152 (dnf f-imm      "immediate field"               ()  15 16)
 153
 154 (define-multi-ifield
 155   (name f-rd-rs)
 156   (comment "register Rd implied from Rs")
 157   (attrs)
 158   (mode UINT)
 159   (subfields f-rd f-rs)
 160   (insert (sequence ()
 161                     (set (ifield f-rd) (ifield f-rd-rs))
 162                     (set (ifield f-rs) (ifield f-rd-rs))
 163                      ))
 164   (extract (sequence ()
 165                      (set (ifield f-rd-rs) (ifield f-rs))
 166                      ))
 167 )
 168
 169 (define-multi-ifield
 170   (name f-rd-rt)
 171   (comment "register Rd implied from Rt")
 172   (attrs)
 173   (mode UINT)
 174   (subfields f-rd f-rt)
 175   (insert (sequence ()
 176                     (set (ifield f-rd) (ifield f-rd-rt))
 177                     (set (ifield f-rt) (ifield f-rd-rt))
 178                      ))
 179   (extract (sequence ()
 180                      (set (ifield f-rd-rt) (ifield f-rt))
 181                      ))
 182 )
 183
 184 (define-multi-ifield
 185   (name f-rt-rs)
 186   (comment "register Rt implied from Rs")
 187   (attrs)
 188   (mode UINT)
 189   (subfields f-rt f-rs)
 190   (insert (sequence ()
 191                     (set (ifield f-rt) (ifield f-rt-rs))
 192                     (set (ifield f-rs) (ifield f-rt-rs))
 193                      ))
 194   (extract (sequence ()
 195                      (set (ifield f-rd-rs) (ifield f-rs))
 196                      ))
 197 )
 198
 199 (df  f-jtarg "jump target field"               (ABS-ADDR) 15 16 UINT
 200      ((value pc) (srl USI (and USI value #x03FFFF) 2))
 201      ((value pc) (or USI (and USI pc #xF0000000) (sll USI value 2))))
 202
 203 (df  f-jtargq10 "iq10 jump target field"       (ABS-ADDR) 20 21 UINT
 204      ((value pc) (srl SI (and SI value #x7FFFFF) 2))
 205      ((value pc) (or SI (and SI pc #xF0000000) (sll SI value 2))))
 206
 207 (df  f-offset "pc offset field"                (PCREL-ADDR) 15 16 INT
 208      ; Actually, this is relative to the address of the delay slot.
 209      ((value pc) (sra SI (sub SI value pc) 2))
 210      ((value pc) (add SI (mul SI value 4) (add pc 4))))
 211
 212 ; Instruction fields that scarcely appear in instructions.
 213
 214 (dnf f-count   "count field"        ()   15  7)
 215 (dnf f-bytecount "byte count field" ()    7  8)
 216 (dnf f-index   "index field"        ()    8  9)
 217 (dnf f-mask    "mask field"         ()    9  4)
 218 (dnf f-maskq10 "iq10 mask field"    ()   10  5)
 219 (dnf f-maskl   "mask left field"    ()    4  5)
 220 (dnf f-excode  "execcode field"     ()   25 20)
 221 (dnf f-rsrvd   "reserved field"     ()   25 10)
 222 (dnf f-10-11   "bits 10:0"          ()   10 11)
 223 (dnf f-24-19   "bits 24:6"          ()   24 19)
 224 (dnf f-5       "bit 5"              ()    5  1)
 225 (dnf f-10      "bit 10"             ()   10  1)
 226 (dnf f-25      "bit 25"             ()   25  1)
 227 (dnf f-cam-z   "cam global mask z"  ()    5  3)
 228 (dnf f-cam-y   "cam operation y"    ()    2  3)
 229 (dnf f-cm-3func "CM 3 bit fn field" ()    5  3)
 230 (dnf f-cm-4func "CM 4 bit fn field" ()    5  4)
 231 (dnf f-cm-3z   "CM 3Z field"        ()    1  2)
 232 (dnf f-cm-4z   "CM 4Z field"        ()    2  3)
 233
 234 \f
 235 ; Enumerations.
 236
 237 (define-normal-insn-enum
 238   opcodes "primary opcodes" () OP_ f-opcode
 239   (("SPECIAL" 0) ("REGIMM" 1) ("J"     2) ("JAL"    3) ("BEQ"    4) ("BNE"   5) ("BLEZ"   6) ("BGTZ"    7)
 240    ("ADDI"    8) ("ADDIU"  9) ("SLTI" 10) ("SLTIU" 11) ("ANDI"  12) ("ORI"  13) ("XORI"  14) ("LUI"    15)
 241    ("COP0"   16) ("COP1"  17) ("COP2" 18) ("COP3"  19) ("BEQL"  20) ("BNEL" 21) ("BLEZL" 22) ("BGTZL"  23)
 242    ("BMB0"   24) ("BMB1"  25) ("BMB2" 26) ("BMB3"  27) ("BBI"   28) ("BBV"  29) ("BBIN"  30) ("BBVN"   31)
 243    ("LB"     32) ("LH"    33)             ("LW"    35) ("LBU"   36) ("LHU"  37)              ("RAM"    39)
 244    ("SB"     40) ("SH"    41)             ("SW"    43) ("ANDOI" 44) ("BMB"  45)              ("ORUI"   47)
 245    ("LDW"    48)
 246    ("SDW"    56)                                                                             ("ANDOUI" 63))
 247 )
 248
 249 (define-normal-insn-enum
 250   q10_opcodes "iq10-only primary opcodes" () OP10_ f-opcode
 251   (("BMB" 6) ("ORUI" 15) ("BMBL" 22) ("ANDOUI" 47) ("BBIL" 60) ("BBVL" 61) ("BBINL" 62) ("BBVNL" 63))
 252 )
 253
 254 (define-normal-insn-enum
 255   regimm-functions "branch sub-opcodes" () FUNC_ f-rt
 256   (("BLTZ"    0) ("BGEZ"    1) ("BLTZL"    2) ("BGEZL"    3) ("BLEZ"    4) ("BGTZ"    5) ("BLEZL"    6) ("BGTZL"    7)
 257    ("BRI"     8) ("BRV"     9)                               ("BCTX"   12)
 258    ("BLTZAL" 16) ("BGEZAL" 17) ("BLTZALL" 18) ("BGEZALL" 19) ("BLEZAL" 20) ("BGTZAL" 21) ("BLEZALL" 22) ("BGTZALL" 23))
 259 )
 260
 261 (define-normal-insn-enum
 262   functions "function sub-opcodes" () FUNC_ f-func
 263   (("SLL"  0) ("SLMV"   1) ("SRL"  2) ("SRA"   3) ("SLLV"     4) ("SRMV"   5) ("SRLV"   6) ("SRAV" 7)
 264    ("JR"   8) ("JALR"   9) ("JCR" 10)             ("SYSCALL" 12) ("BREAK" 13) ("SLEEP" 14)
 265    ("ADD" 32) ("ADDU"  33) ("SUB" 34) ("SUBU" 35) ("AND"     36) ("OR"    37) ("XOR"   38) ("NOR" 39)
 266               ("ADO16" 41) ("SLT" 42) ("SLTU" 43)                ("MRGB"  45))
 267 )
 268
 269 ; iq10 special function sub-opcodes
 270 (define-normal-insn-enum
 271   q10s_functions "iq10-only special function sub-opcodes" () FUNC10_ f-func
 272   (("YIELD" 14) ("CNT1S" 46))
 273 )
 274
 275 ; coprocessor opcodes in concert with f-cp-grp
 276 (define-normal-insn-enum
 277   cop_functions "iq10 function sub-opcodes" () FUNC10_ f-func
 278   (("CFC"    0) ("LOCK"    1) ("CTC"     2) ("UNLK"    3) ("SWRD"    4) ("SWRDL"   5) ("SWWR"    6) ("SWWRU"  7)
 279    ("RBA"    8) ("RBAL"    9) ("RBAR"   10)               ("DWRD"   12) ("DWRDL"  13)
 280    ("WBA"   16) ("WBAU"   17) ("WBAC"   18)               ("CRC32"  20) ("CRC32B" 21)
 281    ("MCID"  32) ("DBD"    33) ("DBA"    34) ("DPWT"   35) ("AVAIL"  36) ("FREE"   37) ("CHKHDR" 38) ("TSTOD" 39)
 282    ("PKRLA" 40) ("PKRLAU" 41) ("PKRLAH" 42) ("PKRLAC" 43) ("CMPHDR" 44)
 283
 284    ("CM64RS"  0) ("CM64RD"  1)                                ("CM64RI"    4) ("CM64CLR"    5)
 285    ("CM64SS"  8) ("CM64SD"  9)                                ("CM64SI"   12)
 286    ("CM64RA" 16)                                              ("CM64RIA2" 20) ("CM128RIA2" 21)
 287    ("CM64SA" 24)                                              ("CM64SIA2" 28) ("CM128SIA2" 29)
 288    ("CM32RS" 32) ("CM32RD" 33) ("CM32XOR" 34) ("CM32ANDN" 35) ("CM32RI"   36)                  ("CM128VSA" 38)
 289    ("CM32SS" 40) ("CM32SD" 41) ("CM32OR"  42) ("CM32AND"  43) ("CM32SI"   44)
 290    ("CM32RA" 48)
 291    ("CM32SA" 56) )
 292 )
 293
 294 ; coprocessor opcodes in concert with f-cp-grp
 295 (define-normal-insn-enum
 296   cop_cm128_4functions "iq10 function sub-opcodes" () FUNC10_ f-cm-4func
 297   (("CM128RIA3" 4) ("CM128SIA3" 6))
 298 )
 299
 300 (define-normal-insn-enum
 301   cop_cm128_3functions "iq10 function sub-opcodes" () FUNC10_ f-cm-3func
 302   (("CM128RIA4" 6) ("CM128SIA4" 7))
 303 )
 304
 305 (define-normal-insn-enum
 306    cop2_functions "iq10 coprocessor sub-opcodes" () FUNC10_ f-cp-op
 307    (("PKRLI" 0) ("PKRLIU" 1) ("PKRLIH" 2) ("PKRLIC" 3) ("RBIR" 1) ("RBI" 2) ("RBIL" 3) ("WBIC" 5) ("WBI" 6) ("WBIU" 7))
 308 )
 309
 310 (define-normal-insn-enum
 311    cop3_cam_functions "iq10 coprocessor cam sub-opcodes" () FUNC10_ f-cp-op-10
 312    (("CAM36" 16) ("CAM72" 17) ("CAM144" 18) ("CAM288" 19))
 313 )
 314
 315 \f
 316 ; Attributes.
 317
 318 (define-attr
 319   (for insn)
 320   (type boolean)
 321   (name YIELD-INSN)
 322   (comment "insn generates a context yield")
 323 )
 324
 325 (define-attr
 326   (for insn)
 327   (type boolean)
 328   (name LOAD-DELAY)
 329   (comment "insn has a load delay")
 330 )
 331
 332 (define-attr
 333   (for insn)
 334   (type boolean)
 335   (name EVEN-REG-NUM)
 336   (comment "insn requires an even numbered register in rt(2000) or rd(10)")
 337 )
 338
 339 (define-attr
 340   (for insn)
 341   (type boolean)
 342   (name UNSUPPORTED)
 343   (comment "insn is unsupported")
 344 )
 345
 346 (define-pmacro (define-reg-use-attr regfield)
 347   (define-attr
 348     (for insn)
 349     (type boolean)
 350     (name (.sym USES- (.upcase regfield)))
 351     (comment ("insn accesses register operand " regfield))))
 352
 353 (define-reg-use-attr "rd")
 354 (define-reg-use-attr "rs")
 355 (define-reg-use-attr "rt")
 356 (define-reg-use-attr "r31")
 357
 358 \f
 359 ; Operands.
 360
 361 (dnop rs       "register Rs"             () h-gr    f-rs)
 362 (dnop rt       "register Rt"             () h-gr    f-rt)
 363 (dnop rd       "register Rd"             () h-gr    f-rd)
 364 (dnop rd-rs    "register Rd from Rs"     () h-gr    f-rd-rs)
 365 (dnop rd-rt    "register Rd from Rt"     () h-gr    f-rd-rt)
 366 (dnop rt-rs    "register Rt from Rs"     () h-gr    f-rt-rs)
 367 (dnop shamt    "shift amount"            () h-uint  f-shamt)
 368 (define-operand (name imm) (comment "immediate") (attrs)
 369    (type h-uint) (index f-imm) (handlers (parse "imm")))
 370 (dnop offset   "pc-relative offset"      () h-iaddr f-offset)
 371 (dnop baseoff  "base register offset"    () h-iaddr f-imm)
 372 (dnop jmptarg  "jump target"             () h-iaddr f-jtarg)
 373 (dnop mask     "mask"                    () h-uint  f-mask)
 374 (dnop maskq10  "iq10 mask"               () h-uint  f-maskq10)
 375 (dnop maskl    "mask left"               () h-uint  f-maskl)
 376 (dnop count    "count"                   () h-uint  f-count)
 377 (dnop _index   "index"                   () h-uint  f-index)
 378 (dnop execode  "execcode"                () h-uint  f-excode)
 379 (dnop bytecount "byte count"             () h-uint  f-bytecount)
 380 (dnop cam-y     "cam global opn y"       () h-uint  f-cam-y)
 381 (dnop cam-z     "cam global mask z"      () h-uint  f-cam-z)
 382 (dnop cm-3func  "CM 3 bit fn field"      () h-uint  f-cm-3func)
 383 (dnop cm-4func  "CM 4 bit fn field"      () h-uint  f-cm-4func)
 384 (dnop cm-3z     "CM 3 bit Z field"       () h-uint  f-cm-3z)
 385 (dnop cm-4z     "CM 4 bit Z field"       () h-uint  f-cm-4z)
 386
 387 ; Aliases for the rs and rt operands. This just makes the load/store
 388 ; insns easier to compare with the instruction set documentation.
 389
 390 (dnop base    "base register"                  () h-gr   f-rs)
 391 (dnop maskr   "mask right"                     () h-uint f-rs)
 392 (dnop bitnum  "bit number"                     () h-uint f-rt)
 393
 394 ; For high(foo).
 395 (define-operand
 396   (name hi16)
 397   (comment "high 16 bit immediate")
 398   (attrs)
 399   (type h-uint)
 400   (index f-imm)
 401   (handlers (parse "hi16"))
 402 )
 403
 404 ; For low(foo).
 405 (define-operand
 406   (name lo16)
 407   (comment "16 bit signed immediate, for low")
 408   (attrs)
 409   (type h-uint)
 410   (index f-imm)
 411   (handlers (parse "lo16"))
 412 )
 413
 414 ; For negated imm.
 415 (define-operand
 416   (name mlo16)
 417   (comment "negated 16 bit signed immediate")
 418   (attrs)
 419   (type h-uint)
 420   (index f-imm)
 421   (handlers (parse "mlo16"))
 422 )
 423
 424 ; For iq10 jmps
 425 ; In the future, we'll want the j & jal to use the 21 bit target, with
 426 ; the upper five bits shifted up.  For now, don't use this.
 427 (define-operand
 428   (name jmptargq10)
 429   (comment "iq10 21-bit jump offset")
 430   (attrs)
 431   (type h-iaddr)
 432   (index f-jtargq10)
 433   (handlers (parse "jtargq10"))
 434 )
 435
 436 \f
 437 ; Instructions.
 438
 439 ; A pmacro for use in semantic bodies of unimplemented insns.
 440 (define-pmacro (unimp mnemonic) (nop))
 441
 442 (define-pmacro (bitset? value bit-num)
 443   (and value (sll 1 bit-num)))
 444
 445 (define-pmacro (bitclear? value bit-num)
 446   (not (bitset? value bit-num)))
 447
 448 ; Arithmetic/logic instructions.
 449
 450 (dni add2 "add registers" (ALIAS NO-DIS USES-RD USES-RS USES-RT)
 451      "add ${rd-rs},$rt"
 452      (+ OP_SPECIAL rt rd-rs (f-shamt 0) FUNC_ADD)
 453      (set rd-rs (add rt rd-rs))
 454      ())
 455
 456 (dni add "add registers" (USES-RD USES-RS USES-RT)
 457      "add $rd,$rs,$rt"
 458      (+ OP_SPECIAL rs rt rd (f-shamt 0) FUNC_ADD)
 459      (set rd (add rs rt))
 460      ())
 461
 462
 463 (dni addi2 "add immediate" (ALIAS NO-DIS USES-RS USES-RT)
 464      "addi ${rt-rs},$lo16"
 465      (+ OP_ADDI rt-rs lo16)
 466      (set rt-rs (add rt-rs (ext SI (trunc HI lo16))))
 467      ())
 468
 469 (dni addi "add immediate" (USES-RS USES-RT)
 470      "addi $rt,$rs,$lo16"
 471      (+ OP_ADDI rs rt lo16)
 472      (set rt (add rs (ext SI (trunc HI lo16))))
 473      ())
 474
 475 (dni addiu2 "add immediate unsigned" (ALIAS NO-DIS USES-RS USES-RT)
 476      "addiu ${rt-rs},$lo16"
 477      (+ OP_ADDIU rt-rs lo16)
 478      (set rt-rs (add rt-rs (ext SI (trunc HI lo16))))
 479      ())
 480
 481 (dni addiu "add immediate unsigned" (USES-RS USES-RT)
 482      "addiu $rt,$rs,$lo16"
 483      (+ OP_ADDIU rs rt lo16)
 484      (set rt (add rs (ext SI (trunc HI lo16))))
 485      ())
 486
 487 (dni addu2 "add unsigned" (ALIAS NO-DIS USES-RD USES-RS USES-RT)
 488      "addu ${rd-rs},$rt"
 489      (+ OP_SPECIAL rd-rs rt (f-shamt 0) FUNC_ADDU)
 490      (set rd-rs (add rd-rs rt))
 491      ())
 492
 493 (dni addu "add unsigned" (USES-RD USES-RS USES-RT)
 494      "addu $rd,$rs,$rt"
 495      (+ OP_SPECIAL rs rt rd (f-shamt 0) FUNC_ADDU)
 496      (set rd (add rs rt))
 497      ())
 498
 499 (dni ado162 "add 16, ones complement" (ALIAS NO-DIS USES-RD USES-RS USES-RT)
 500      "ado16 ${rd-rs},$rt"
 501      (+ OP_SPECIAL rd-rs rt (f-shamt 0) FUNC_ADO16)
 502      (sequence ((HI high) (HI low))
 503                (set low (add HI (and HI rd-rs #xFFFF) (and HI rt #xFFFF)))
 504                (set high (add HI (srl rd-rs 16) (srl rt 16)))
 505                (set rd-rs (or SI (sll SI high 16) low)))
 506      ())
 507
 508 (dni ado16 "add 16, ones complement" (USES-RD USES-RS USES-RT)
 509      "ado16 $rd,$rs,$rt"
 510      (+ OP_SPECIAL rs rt rd (f-shamt 0) FUNC_ADO16)
 511      (sequence ((HI high) (HI low))
 512                (set low (add HI (and HI rs #xFFFF) (and HI rt #xFFFF)))
 513                (set high (add HI (srl rs 16) (srl rt 16)))
 514                (set rd (or SI (sll SI high 16) low)))
 515      ())
 516
 517 (dni and2 "and register" (ALIAS NO-DIS USES-RD USES-RS USES-RT)
 518      "and ${rd-rs},$rt"
 519      (+ OP_SPECIAL rd-rs rt (f-shamt 0) FUNC_AND)
 520      (set rd-rs (and rd-rs rt))
 521      ())
 522
 523 (dni and "and register" (USES-RD USES-RS USES-RT)
 524      "and $rd,$rs,$rt"
 525      (+ OP_SPECIAL rs rt rd (f-shamt 0) FUNC_AND)
 526      (set rd (and rs rt))
 527      ())
 528
 529 (dni andi2 "and immediate" (ALIAS NO-DIS USES-RS USES-RT)
 530      "andi ${rt-rs},$lo16"
 531      (+ OP_ANDI rt-rs lo16)
 532      (set rt-rs (and rt-rs (zext SI lo16)))
 533      ())
 534
 535 (dni andi "and immediate" (USES-RS USES-RT)
 536      "andi $rt,$rs,$lo16"
 537      (+ OP_ANDI rs rt lo16)
 538      (set rt (and rs (zext SI lo16)))
 539      ())
 540
 541 (dni andoi2 "and ones immediate" (ALIAS NO-DIS USES-RS USES-RT)
 542      "andoi ${rt-rs},$lo16"
 543      (+ OP_ANDOI rt-rs lo16)
 544      (set rt-rs (and rt-rs (or #xFFFF0000 (ext SI (trunc HI lo16)))))
 545      ())
 546
 547 (dni andoi "and ones immediate" (USES-RS USES-RT)
 548      "andoi $rt,$rs,$lo16"
 549      (+ OP_ANDOI rs rt lo16)
 550      (set rt (and rs (or #xFFFF0000 (ext SI (trunc HI lo16)))))
 551      ())
 552
 553 (dni nor2 "nor" (ALIAS NO-DIS USES-RD USES-RS USES-RT)
 554      "nor ${rd-rs},$rt"
 555      (+ OP_SPECIAL rd-rs rt (f-shamt 0) FUNC_NOR)
 556      (set rd-rs (inv (or rd-rs rt)))
 557      ())
 558
 559 (dni nor "nor" (USES-RD USES-RS USES-RT)
 560      "nor $rd,$rs,$rt"
 561      (+ OP_SPECIAL rs rt rd (f-shamt 0) FUNC_NOR)
 562      (set rd (inv (or rs rt)))
 563      ())
 564
 565 (dni or2 "or" (ALIAS NO-DIS USES-RD USES-RS USES-RT)
 566      "or ${rd-rs},$rt"
 567      (+ OP_SPECIAL rd-rs rt (f-shamt 0) FUNC_OR)
 568      (set rd-rs (or rd-rs rt))
 569      ())
 570
 571 (dni or "or" (USES-RD USES-RS USES-RT)
 572      "or $rd,$rs,$rt"
 573      (+ OP_SPECIAL rs rt rd (f-shamt 0) FUNC_OR)
 574      (set rd (or rs rt))
 575      ())
 576
 577 (dni ori2 "or immediate" (ALIAS NO-DIS USES-RS USES-RT)
 578      "ori ${rt-rs},$lo16"
 579      (+ OP_ORI rt-rs lo16)
 580      (set rt-rs (or rt-rs (zext SI lo16)))
 581      ())
 582
 583 (dni ori "or immediate" (USES-RS USES-RT)
 584      "ori $rt,$rs,$lo16"
 585      (+ OP_ORI rs rt lo16)
 586      (set rt (or rs (zext SI lo16)))
 587      ())
 588
 589 (dni ram "rotate and mask" (USES-RD USES-RT)
 590      "ram $rd,$rt,$shamt,$maskl,$maskr"
 591      (+ OP_RAM maskr rt rd shamt (f-5 0) maskl)
 592      (sequence ()
 593                (set rd (ror rt shamt))
 594                (set rd (and rd (srl #xFFFFFFFF maskl)))
 595                (set rd (and rd (sll #xFFFFFFFF maskr))))
 596      ())
 597
 598 (dni sll "shift left logical" (USES-RD USES-RT)
 599      "sll $rd,$rt,$shamt"
 600      (+ OP_SPECIAL (f-rs 0) rt rd shamt (f-func 0))
 601      (set rd (sll rt shamt))
 602      ())
 603
 604 (dni sllv2 "shift left logical variable" (ALIAS NO-DIS USES-RD USES-RS USES-RT)
 605      "sllv ${rd-rt},$rs"
 606      (+ OP_SPECIAL rs rd-rt (f-shamt 0) FUNC_SLLV)
 607      (set rd-rt (sll rd-rt (and rs #x1F)))
 608      ())
 609
 610 (dni sllv "shift left logical variable" (USES-RD USES-RS USES-RT)
 611      "sllv $rd,$rt,$rs"
 612      (+ OP_SPECIAL rs rt rd (f-shamt 0) FUNC_SLLV)
 613      (set rd (sll rt (and rs #x1F)))
 614      ())
 615
 616 (dni slmv2 "shift left and mask variable" (ALIAS NO-DIS USES-RD USES-RS USES-RT)
 617      "slmv ${rd-rt},$rs,$shamt"
 618      (+ OP_SPECIAL rs rd-rt shamt FUNC_SLMV)
 619      (set rd-rt (and (sll rd-rt shamt) (srl #xFFFFFFFF rs)))
 620      ())
 621
 622 (dni slmv "shift left and mask variable" (USES-RD USES-RS USES-RT)
 623      "slmv $rd,$rt,$rs,$shamt"
 624      (+ OP_SPECIAL rs rt rd shamt FUNC_SLMV)
 625      (set rd (and (sll rt shamt) (srl #xFFFFFFFF rs)))
 626      ())
 627
 628 (dni slt2 "set if less than" (ALIAS NO-DIS USES-RD USES-RS USES-RT)
 629      "slt ${rd-rs},$rt"
 630      (+ OP_SPECIAL rt rd-rs (f-shamt 0) FUNC_SLT)
 631      (if (lt rd-rs rt)
 632          (set rd-rs 1)
 633          (set rd-rs 0))
 634      ())
 635
 636 (dni slt "set if less than" (USES-RD USES-RS USES-RT)
 637      "slt $rd,$rs,$rt"
 638      (+ OP_SPECIAL rs rt rd (f-shamt 0) FUNC_SLT)
 639      (if (lt rs rt)
 640          (set rd 1)
 641          (set rd 0))
 642      ())
 643
 644 (dni slti2 "set if less than immediate" (ALIAS NO-DIS USES-RS USES-RT)
 645      "slti ${rt-rs},$imm"
 646      (+ OP_SLTI rt-rs imm)
 647      (if (lt rt-rs (ext SI (trunc HI imm)))
 648          (set rt-rs 1)
 649          (set rt-rs 0))
 650      ())
 651
 652 (dni slti "set if less than immediate" (USES-RS USES-RT)
 653      "slti $rt,$rs,$imm"
 654      (+ OP_SLTI rs rt imm)
 655      (if (lt rs (ext SI (trunc HI imm)))
 656          (set rt 1)
 657          (set rt 0))
 658      ())
 659
 660 (dni sltiu2 "set if less than immediate unsigned" (ALIAS NO-DIS USES-RS USES-RT)
 661      "sltiu ${rt-rs},$imm"
 662      (+ OP_SLTIU rt-rs imm)
 663      (if (ltu rt-rs (ext SI (trunc HI imm)))
 664          (set rt-rs 1)
 665          (set rt-rs 0))
 666      ())
 667
 668 (dni sltiu "set if less than immediate unsigned" (USES-RS USES-RT)
 669      "sltiu $rt,$rs,$imm"
 670      (+ OP_SLTIU rs rt imm)
 671      (if (ltu rs (ext SI (trunc HI imm)))
 672          (set rt 1)
 673          (set rt 0))
 674      ())
 675
 676 (dni sltu2 "set if less than unsigned" (ALIAS NO-DIS USES-RD USES-RS USES-RT)
 677      "sltu ${rd-rs},$rt"
 678      (+ OP_SPECIAL rd-rs rt (f-shamt 0) FUNC_SLTU)
 679      (if (ltu rd-rs rt)
 680          (set rd-rs 1)
 681          (set rd-rs 0))
 682      ())
 683
 684 (dni sltu "set if less than unsigned" (USES-RD USES-RS USES-RT)
 685      "sltu $rd,$rs,$rt"
 686      (+ OP_SPECIAL rs rt rd (f-shamt 0) FUNC_SLTU)
 687      (if (ltu rs rt)
 688          (set rd 1)
 689          (set rd 0))
 690      ())
 691
 692 (dni sra2 "shift right arithmetic" (ALIAS NO-DIS USES-RD USES-RT)
 693      "sra ${rd-rt},$shamt"
 694      (+ OP_SPECIAL (f-rs 0) rd-rt shamt FUNC_SRA)
 695      (set rd-rt (sra rd-rt shamt))
 696      ())
 697
 698 (dni sra "shift right arithmetic" (USES-RD USES-RT)
 699      "sra $rd,$rt,$shamt"
 700      (+ OP_SPECIAL (f-rs 0) rt rd shamt FUNC_SRA)
 701      (set rd (sra rt shamt))
 702      ())
 703
 704 (dni srav2 "shift right arithmetic variable" (ALIAS NO-DIS USES-RD USES-RS USES-RT)
 705      "srav ${rd-rt},$rs"
 706      (+ OP_SPECIAL rs rd-rt (f-shamt 0) FUNC_SRAV)
 707      (set rd-rt (sra rd-rt (and rs #x1F)))
 708      ())
 709
 710 (dni srav "shift right arithmetic variable" (USES-RD USES-RS USES-RT)
 711      "srav $rd,$rt,$rs"
 712      (+ OP_SPECIAL rs rt rd (f-shamt 0) FUNC_SRAV)
 713      (set rd (sra rt (and rs #x1F)))
 714      ())
 715
 716 (dni srl "shift right logical" (USES-RD USES-RT)
 717      "srl $rd,$rt,$shamt"
 718      (+ OP_SPECIAL (f-rs 0) rt rd shamt FUNC_SRL)
 719      (set rd (srl rt shamt))
 720      ())
 721
 722 (dni srlv2 "shift right logical variable" (ALIAS NO-DIS USES-RD USES-RS USES-RT)
 723      "srlv ${rd-rt},$rs"
 724      (+ OP_SPECIAL rs rd-rt (f-shamt 0) FUNC_SRLV)
 725      (set rd-rt (srl rd-rt (and rs #x1F)))
 726      ())
 727
 728 (dni srlv "shift right logical variable" (USES-RD USES-RS USES-RT)
 729      "srlv $rd,$rt,$rs"
 730      (+ OP_SPECIAL rs rt rd (f-shamt 0) FUNC_SRLV)
 731      (set rd (srl rt (and rs #x1F)))
 732      ())
 733
 734 (dni srmv2 "shift right and mask variable" (ALIAS NO-DIS USES-RD USES-RS USES-RT)
 735      "srmv ${rd-rt},$rs,$shamt"
 736      (+ OP_SPECIAL rs rd-rt shamt FUNC_SRMV)
 737      (set rd-rt (and (srl rd-rt shamt) (sll #xFFFFFFFF rs)))
 738      ())
 739
 740 (dni srmv "shift right and mask variable" (USES-RD USES-RS USES-RT)
 741      "srmv $rd,$rt,$rs,$shamt"
 742      (+ OP_SPECIAL rs rt rd shamt FUNC_SRMV)
 743      (set rd (and (srl rt shamt) (sll #xFFFFFFFF rs)))
 744      ())
 745
 746 (dni sub2 "subtract" (ALIAS NO-DIS USES-RD USES-RS USES-RT)
 747      "sub ${rd-rs},$rt"
 748      (+ OP_SPECIAL rt rd-rs (f-shamt 0) FUNC_SUB)
 749      (set rd-rs (sub rd-rs rt))
 750      ())
 751
 752 (dni sub "subtract" (USES-RD USES-RS USES-RT)
 753      "sub $rd,$rs,$rt"
 754      (+ OP_SPECIAL rs rt rd (f-shamt 0) FUNC_SUB)
 755      (set rd (sub rs rt))
 756      ())
 757
 758 (dni subu2 "subtract unsigned" (ALIAS NO-DIS USES-RD USES-RS USES-RT)
 759      "subu ${rd-rs},$rt"
 760      (+ OP_SPECIAL rt rd-rs (f-shamt 0) FUNC_SUBU)
 761      (set rd-rs (sub rd-rs rt))
 762      ())
 763
 764 (dni subu "subtract unsigned" (USES-RD USES-RS USES-RT)
 765      "subu $rd,$rs,$rt"
 766      (+ OP_SPECIAL rs rt rd (f-shamt 0) FUNC_SUBU)
 767      (set rd (sub rs rt))
 768      ())
 769
 770 (dni xor2 "exclusive or" (ALIAS NO-DIS USES-RD USES-RS USES-RT)
 771      "xor ${rd-rs},$rt"
 772      (+ OP_SPECIAL rt rd-rs (f-shamt 0) FUNC_XOR)
 773      (set rd-rs (xor rd-rs rt))
 774      ())
 775
 776 (dni xor "exclusive or" (USES-RD USES-RS USES-RT)
 777      "xor $rd,$rs,$rt"
 778      (+ OP_SPECIAL rs rt rd (f-shamt 0) FUNC_XOR)
 779      (set rd (xor rs rt))
 780      ())
 781
 782 (dni xori2 "exclusive or immediate" (ALIAS NO-DIS USES-RS USES-RT)
 783      "xori ${rt-rs},$lo16"
 784      (+ OP_XORI rt-rs lo16)
 785      (set rt-rs (xor rt-rs (zext SI lo16)))
 786      ())
 787
 788 (dni xori "exclusive or immediate" (USES-RS USES-RT)
 789      "xori $rt,$rs,$lo16"
 790      (+ OP_XORI rs rt lo16)
 791      (set rt (xor rs (zext SI lo16)))
 792      ())
 793
 794 \f
 795 ; Branch instructions.
 796
 797 (dni bbi "branch bit immediate" (USES-RS)
 798      "bbi $rs($bitnum),$offset"
 799      (+ OP_BBI rs bitnum offset)
 800      (if (bitset? rs bitnum)
 801          (delay 1 (set pc offset)))
 802      ())
 803
 804 (dni bbin "branch bit immediate negated" (USES-RS)
 805      "bbin $rs($bitnum),$offset"
 806      (+ OP_BBIN rs bitnum offset)
 807      (if (bitclear? rs bitnum)
 808          (delay 1 (set pc offset)))
 809      ())
 810
 811 (dni bbv "branch bit variable" (USES-RS USES-RT)
 812      "bbv $rs,$rt,$offset"
 813      (+ OP_BBV rs rt offset)
 814      (if (bitset? rs (and rt #x1F))
 815          (delay 1 (set pc offset)))
 816      ())
 817
 818 (dni bbvn "branch bit variable negated" (USES-RS USES-RT)
 819      "bbvn $rs,$rt,$offset"
 820      (+ OP_BBVN rs rt offset)
 821      (if (bitclear? rs (and rt #x1F))
 822          (delay 1 (set pc offset)))
 823      ())
 824
 825 (dni beq "branch if equal" (USES-RS USES-RT)
 826      "beq $rs,$rt,$offset"
 827      (+ OP_BEQ rs rt offset)
 828      (if (eq rs rt)
 829          (delay 1 (set pc offset)))
 830      ())
 831
 832 (dni beql "branch if equal likely" (USES-RS USES-RT)
 833      "beql $rs,$rt,$offset"
 834      (+ OP_BEQL rs rt offset)
 835      (if (eq rs rt)
 836          (delay 1 (set pc offset))
 837          (skip 1))
 838      ())
 839
 840 (dni bgez "branch if greater than or equal to zero" (USES-RS)
 841      "bgez $rs,$offset"
 842      (+ OP_REGIMM rs FUNC_BGEZ offset)
 843      (if (ge rs 0)
 844          (delay 1 (set pc offset)))
 845      ())
 846
 847 (dni bgezal "branch if greater than or equal to zero and link" (USES-RS USES-R31)
 848      "bgezal $rs,$offset"
 849      (+ OP_REGIMM rs FUNC_BGEZAL offset)
 850      (if (ge rs 0)
 851          (sequence ()
 852                    (set (reg h-gr 31) (add pc 8))
 853                    (delay 1 (set pc offset))))
 854      ())
 855
 856 (dni bgezall
 857      "branch if greater than equal to zero and link likely" (USES-RS USES-R31)
 858      "bgezall $rs,$offset"
 859      (+ OP_REGIMM rs FUNC_BGEZALL offset)
 860      (if (ge rs 0)
 861          (sequence ()
 862                    (set (reg h-gr 31) (add pc 8))
 863                    (delay 1 (set pc offset)))
 864          (skip 1))
 865      ())
 866
 867 (dni bgezl "branch if greater or equal to zero likely" (USES-RS)
 868      "bgezl $rs,$offset"
 869      (+ OP_REGIMM rs FUNC_BGEZL offset)
 870      (if (ge rs 0)
 871          (delay 1 (set pc offset))
 872          (skip 1))
 873      ())
 874
 875 (dni bltz "branch if less than zero" (USES-RS)
 876      "bltz $rs,$offset"
 877      (+ OP_REGIMM rs FUNC_BLTZ offset)
 878      (if (lt rs 0)
 879          (delay 1 (set pc offset)))
 880      ())
 881
 882 (dni bltzl "branch if less than zero likely" (USES-RS)
 883      "bltzl $rs,$offset"
 884      (+ OP_REGIMM rs FUNC_BLTZL offset)
 885      (if (lt rs 0)
 886          (delay 1 (set pc offset))
 887          (skip 1))
 888      ())
 889
 890 (dni bltzal "branch if less than zero and link" (USES-RS USES-R31)
 891      "bltzal $rs,$offset"
 892      (+ OP_REGIMM rs FUNC_BLTZAL offset)
 893      (if (lt rs 0)
 894          (sequence ()
 895                    (set (reg h-gr 31) (add pc 8))
 896                    (delay 1 (set pc offset))))
 897      ())
 898
 899 (dni bltzall "branch if less than zero and link likely" (USES-RS USES-R31)
 900      "bltzall $rs,$offset"
 901      (+ OP_REGIMM rs FUNC_BLTZALL offset)
 902      (if (lt rs 0)
 903          (sequence ()
 904                    (set (reg h-gr 31) (add pc 8))
 905                    (delay 1 (set pc offset)))
 906          (skip 1))
 907      ())
 908
 909 (dni bmb0 "branch if matching byte-lane 0" (USES-RS USES-RT)
 910      "bmb0 $rs,$rt,$offset"
 911      (+ OP_BMB0 rs rt offset)
 912      (if (eq (and rs #xFF) (and rt #xFF))
 913          (delay 1 (set pc offset)))
 914      ())
 915
 916 (dni bmb1 "branch if matching byte-lane 1" (USES-RS USES-RT)
 917      "bmb1 $rs,$rt,$offset"
 918      (+ OP_BMB1 rs rt offset)
 919      (if (eq (and rs #xFF00) (and rt #xFF00))
 920          (delay 1 (set pc offset)))
 921      ())
 922
 923 (dni bmb2 "branch if matching byte-lane 2" (USES-RS USES-RT)
 924      "bmb2 $rs,$rt,$offset"
 925      (+ OP_BMB2 rs rt offset)
 926      (if (eq (and rs #xFF0000) (and rt #xFF0000))
 927          (delay 1 (set pc offset)))
 928      ())
 929
 930 (dni bmb3 "branch if matching byte-lane 3" (USES-RS USES-RT)
 931      "bmb3 $rs,$rt,$offset"
 932      (+ OP_BMB3 rs rt offset)
 933      (if (eq (and rs #xFF000000) (and rt #xFF000000))
 934          (delay 1 (set pc offset)))
 935      ())
 936
 937 (dni bne "branch if not equal" (USES-RS USES-RT)
 938      "bne $rs,$rt,$offset"
 939      (+ OP_BNE rs rt offset)
 940      (if (ne rs rt)
 941          (delay 1 (set pc offset)))
 942      ())
 943
 944 (dni bnel "branch if not equal likely" (USES-RS USES-RT)
 945      "bnel $rs,$rt,$offset"
 946      (+ OP_BNEL rs rt offset)
 947      (if (ne rs rt)
 948          (delay 1 (set pc offset))
 949          (skip 1))
 950      ())
 951
 952 \f
 953
 954 \f
 955 ; Jump instructions.
 956 ; Might as well jump!
 957
 958 (dni jalr "jump and link register" (USES-RD USES-RS)
 959      "jalr $rd,$rs"
 960      (+ OP_SPECIAL rs (f-rt 0) rd (f-shamt 0) FUNC_JALR)
 961      (delay 1
 962             (sequence ()
 963                       (set rd (add pc 8))
 964                       (set pc rs)))
 965      ())
 966
 967 (dni jr "jump register" (USES-RS)
 968      "jr $rs"
 969      (+ OP_SPECIAL rs (f-rt 0) (f-rd 0) (f-shamt 0) FUNC_JR)
 970      (delay 1 (set pc rs))
 971      ())
 972
 973 \f
 974 ; Load instructions.
 975
 976 (dni lb "load byte" (LOAD-DELAY USES-RS USES-RT)
 977      "lb $rt,$lo16($base)"
 978      (+ OP_LB base rt lo16)
 979      (set rt (ext WI (mem QI (add base (ext SI (trunc HI lo16))))))
 980 ;     (sequence ((SI addr) (SI word))
 981 ;              (set addr (add base lo16))
 982 ;              (set word (mem SI (and addr (inv 3))))
 983 ;              (set word (srl word (sll (and addr 2) 3)))
 984 ;              (set rt (ext SI word)))
 985      ())
 986
 987 (dni lbu "load byte unsigned" (LOAD-DELAY USES-RS USES-RT)
 988      "lbu $rt,$lo16($base)"
 989      (+ OP_LBU base rt lo16)
 990      (set rt (zext WI (mem QI (add base (ext SI (trunc HI lo16))))))
 991 ;     (sequence ((SI addr) (SI word))
 992 ;              (set addr (add base lo16))
 993 ;              (set word (mem SI (and addr (inv 3))))
 994 ;              (set rt (srl word (sll (and addr 2) 3))))
 995      ())
 996
 997 (dni lh "load half word" (LOAD-DELAY USES-RS USES-RT)
 998      "lh $rt,$lo16($base)"
 999      (+ OP_LH base rt lo16)
1000      (set rt (ext WI (mem HI (add base (ext SI (trunc HI lo16))))))
1001 ;     (sequence ((SI addr) (HI word))
1002 ;              (set addr (add base lo16))
1003 ;              (set word (mem SI (and addr (inv 3))))
1004 ;              (set word (srl word (sll (and addr 1) 4)))
1005 ;              (set rt (ext SI word)))
1006      ())
1007
1008 (dni lhu "load half word unsigned" (LOAD-DELAY USES-RS USES-RT)
1009      "lhu $rt,$lo16($base)"
1010      (+ OP_LHU base rt lo16)
1011      (set rt (zext WI (mem HI (add base (ext SI (trunc HI lo16))))))
1012 ;     (sequence ((SI addr) (SI word))
1013 ;              (set addr (add base lo16))
1014 ;              (set word (mem SI (and addr (inv 3))))
1015 ;              (set rt (srl word (sll (and addr 1) 4))))
1016      ())
1017
1018 (dni lui "load upper immediate" (USES-RT)
1019      "lui $rt,$hi16"
1020      (+ OP_LUI (f-rs 0) rt hi16)
1021      (set rt (sll hi16 16))
1022      ())
1023
1024 (dni lw "load word" (LOAD-DELAY USES-RS USES-RT)
1025     "lw $rt,$lo16($base)"
1026     (+ OP_LW base rt lo16)
1027     (set rt (mem SI (add base (ext SI (trunc HI lo16)))))
1028     ())
1029
1030 \f
1031 ; Store instructions.
1032
1033 (dni sb "store byte" (USES-RS USES-RT)
1034      "sb $rt,$lo16($base)"
1035      (+ OP_SB base rt lo16)
1036      (set (mem QI (add base (ext SI (trunc HI lo16)))) (and QI rt #xFF))
1037      ())
1038
1039 (dni sh "store half word" (USES-RS USES-RT)
1040      "sh $rt,$lo16($base)"
1041      (+ OP_SH base rt lo16)
1042      (set (mem HI (add base (ext SI (trunc HI lo16)))) (and HI rt #xFFFF))
1043      ())
1044
1045 (dni sw "store word" (USES-RS USES-RT)
1046      "sw $rt,$lo16($base)"
1047      (+ OP_SW base rt lo16)
1048      (set (mem SI (add base (ext SI (trunc HI lo16)))) rt)
1049      ())
1050
1051 \f
1052 ; Special instructions for simulation/debugging
1053 (dni break "breakpoint" ()
1054      "break"
1055      (+ OP_SPECIAL (f-rs 0) (f-rt 0) (f-rd 0) (f-shamt 0) FUNC_BREAK)
1056      (c-call VOID "do_break" pc)
1057      ())
1058
1059 (dni syscall "system call" (YIELD-INSN)
1060      "syscall"
1061      (+ OP_SPECIAL execode (f-func 12))
1062      (c-call VOID "do_syscall")
1063      ())
1064
1065 ; Macro instructions, common to iq10 & iq2000
1066
1067 (dnmi nop "nop" ()
1068       "nop"
1069       (emit sll (rd 0) (rt 0) (shamt 0))
1070 )
1071
1072 (dnmi li "load immediate" (USES-RS NO-DIS)
1073       "li $rs,$imm"
1074       (emit ori (rt 0) rs imm)
1075 )
1076
1077 (dnmi move "move" (USES-RD USES-RT NO-DIS)
1078       "move $rd,$rt"
1079       (emit or rd (rs 0) rt)
1080 )
1081
1082 (dnmi lb-base-0 "load byte - implied base 0" (USES-RT NO-DIS)
1083       "lb $rt,$lo16"
1084       (emit lb rt lo16 (base 0))
1085 )
1086
1087 (dnmi lbu-base-0 "load byte unsigned - implied base 0" (USES-RT NO-DIS)
1088       "lbu $rt,$lo16"
1089       (emit lbu rt lo16 (base 0))
1090 )
1091
1092 (dnmi lh-base-0 "load half - implied base 0" (USES-RT NO-DIS)
1093       "lh $rt,$lo16"
1094       (emit lh rt lo16 (base 0))
1095 )
1096
1097 (dnmi lw-base-0 "load word - implied base 0" (USES-RT NO-DIS)
1098       "lw $rt,$lo16"
1099       (emit lw rt lo16 (base 0))
1100 )
1101
1102 (dnmi m-add "add immediate" (USES-RS USES-RT NO-DIS)
1103       "add $rt,$rs,$lo16"
1104       (emit addi rt rs lo16))
1105
1106 (dnmi m-addu "add immediate unsigned" (USES-RS USES-RT NO-DIS)
1107       "addu $rt,$rs,$lo16"
1108       (emit addiu rt rs lo16)
1109 )
1110
1111 (dnmi m-and "and immediate" (USES-RS USES-RT NO-DIS)
1112       "and $rt,$rs,$lo16"
1113       (emit andi rt rs lo16)
1114 )
1115
1116 (dnmi m-j "jump register" (USES-RS NO-DIS)
1117       "j $rs"
1118       (emit jr rs)
1119 )
1120
1121 (dnmi m-or "or immediate" (USES-RS USES-RT NO-DIS)
1122       "or $rt,$rs,$lo16"
1123       (emit ori rt rs lo16)
1124 )
1125
1126 (dnmi m-sll "shift left logical" (USES-RD USES-RT USES-RS NO-DIS)
1127       "sll $rd,$rt,$rs"
1128       (emit sllv rd rt rs)
1129 )
1130
1131 (dnmi m-slt "slt immediate" (USES-RS USES-RT NO-DIS)
1132       "slt $rt,$rs,$imm"
1133       (emit slti rt rs imm)
1134 )
1135
1136 (dnmi m-sltu "sltu immediate" (USES-RS USES-RT NO-DIS)
1137       "sltu $rt,$rs,$imm"
1138       (emit sltiu rt rs imm)
1139 )
1140
1141 (dnmi m-sra "shift right arithmetic" (USES-RD USES-RT USES-RS NO-DIS)
1142       "sra $rd,$rt,$rs"
1143       (emit srav rd rt rs)
1144 )
1145
1146 (dnmi m-srl "shift right logical" (USES-RD USES-RT USES-RS NO-DIS)
1147       "srl $rd,$rt,$rs"
1148       (emit srlv rd rt rs)
1149 )
1150
1151 (dnmi not "not" (USES-RD USES-RT NO-DIS)
1152       "not $rd,$rt"
1153       (emit nor rd (rs 0) rt)
1154 )
1155
1156 (dnmi subi "sub immediate" (USES-RS USES-RT NO-DIS)
1157       "subi $rt,$rs,$mlo16"
1158       (emit addiu rt rs mlo16)
1159 )
1160
1161 (dnmi m-sub "subtract immediate" (USES-RS USES-RT NO-DIS)
1162       "sub $rt,$rs,$mlo16"
1163       (emit addiu rt rs mlo16)
1164 )
1165
1166 (dnmi m-subu "subtract unsigned" (USES-RS USES-RT NO-DIS)
1167       "subu $rt,$rs,$mlo16"
1168       (emit addiu rt rs mlo16)
1169 )
1170
1171 (dnmi sb-base-0 "store byte - implied base 0" (USES-RT NO-DIS)
1172       "sb $rt,$lo16"
1173       (emit sb rt lo16 (base 0))
1174 )
1175
1176 (dnmi sh-base-0 "store half - implied base 0" (USES-RT NO-DIS)
1177       "sh $rt,$lo16"
1178       (emit sh rt lo16 (base 0))
1179 )
1180
1181 (dnmi sw-base-0 "store word - implied base 0" (USES-RT NO-DIS)
1182       "sw $rt,$lo16"
1183       (emit sw rt lo16 (base 0))
1184 )
1185
1186 (dnmi m-xor "xor immediate" (USES-RS USES-RT NO-DIS)
1187       "xor $rt,$rs,$lo16"
1188       (emit xori rt rs lo16)
1189 )
1190
1191
1192 (if (keep-mach? (iq2000))
1193 (include "iq2000m.cpu"))
1194
1195 (if (keep-mach? (iq10))
1196 (include "iq10.cpu"))