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; Lattice Mico32 CPU description.  -*- Scheme -*-
2 
; Copyright 2008, 2009  Free Software Foundation, Inc.
3 
; Contributed by Jon Beniston
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 
 
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 
 
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 
 
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 
               (JTX 14) (JRX 15)
105 
               (BP0 16) (BP1 17) (BP2 18) (BP3 19)
106 
               (WP0 24) (WP1 25) (WP2 26) (WP3 27)
107 
              )
108 
  )
109 
  () ()
110 
)
111 
 
112 
 
113 
; Instruction fields.
114 
 
115 
(dnf f-opcode   "opcode field"                () 31  6)
116 
(dnf f-r0       "register index 0 field"      () 25  5)
117 
(dnf f-r1       "register index 1 field"      () 20  5)
118 
(dnf f-r2       "register index 2 field"      () 15  5)
119 
(dnf f-resv0    "reserved"                    (RESERVED) 10 11)
120 
(dnf f-shift    "shift amount field"          ()  4  5)
121 
(df  f-imm      "signed immediate field"      () 15 16 INT #f #f)
122 
(dnf f-uimm     "unsigned immediate field"    () 15 16)
123 
(dnf f-csr      "csr field"                   () 25  5)
124 
(dnf f-user     "user defined field"          () 10 11)
125 
(dnf f-exception "exception field"            () 25 26)
126 
 
127 
(df f-branch "branch offset field" (PCREL-ADDR) 15 16 INT
128 
        ((value pc) (sra SI (sub SI value pc) 2))
129 
        ((value pc) (add SI pc (sra SI (sll SI value 16) 14)))
130 
)
131 
(df f-call "call offset field" (PCREL-ADDR) 25 26 INT
132 
        ((value pc) (sra SI (sub SI value pc) 2))
133 
        ((value pc) (add SI pc (sra SI (sll SI value 6) 4)))
134 
)
135 
 
136 
 
137 
; Operands.
138 
 
139 
(dnop r0        "register 0"            () h-gr         f-r0)
140 
(dnop r1        "register 1"            () h-gr         f-r1)
141 
(dnop r2        "register 2"            () h-gr         f-r2)
142 
(dnop shift     "shift amout"           () h-uint       f-shift)
143 
(dnop imm       "signed immediate"      () h-sint       f-imm)
144 
(dnop uimm      "unsigned immediate"    () h-uint       f-uimm)
145 
(dnop branch    "branch offset"         () h-iaddr      f-branch)
146 
(dnop call      "call offset"           () h-iaddr      f-call)
147 
(dnop csr       "csr"                   () h-csr        f-csr)
148 
(dnop user      "user"                  () h-uint       f-user)
149 
(dnop exception "exception"             () h-uint       f-exception)
150 
 
151 
(define-operand
152 
  (name hi16)
153 
  (comment "high 16-bit immediate")
154 
  (attrs)
155 
  (type h-uint)
156 
  (index f-uimm)
157 
  (handlers (parse "hi16"))
158 
)
159 
 
160 
(define-operand
161 
  (name lo16)
162 
  (comment "low 16-bit immediate")
163 
  (attrs)
164 
  (type h-uint)
165 
  (index f-uimm)
166 
  (handlers (parse "lo16"))
167 
)
168 
 
169 
(define-operand
170 
  (name gp16)
171 
  (comment "gp relative 16-bit immediate")
172 
  (attrs)
173 
  (type h-sint)
174 
  (index f-imm)
175 
  (handlers (parse "gp16"))
176 
)
177 
 
178 
(define-operand
179 
  (name got16)
180 
  (comment "got 16-bit immediate")
181 
  (attrs)
182 
  (type h-sint)
183 
  (index f-imm)
184 
  (handlers (parse "got16"))
185 
)
186 
 
187 
(define-operand
188 
  (name gotoffhi16)
189 
  (comment "got offset high 16-bit immediate")
190 
  (attrs)
191 
  (type h-sint)
192 
  (index f-imm)
193 
  (handlers (parse "gotoff_hi16"))
194 
)
195 
 
196 
(define-operand
197 
  (name gotofflo16)
198 
  (comment "got offset low 16-bit immediate")
199 
  (attrs)
200 
  (type h-sint)
201 
  (index f-imm)
202 
  (handlers (parse "gotoff_lo16"))
203 
)
204 
 
205 
 
206 
; Enumerations.
207 
 
208 
(define-normal-insn-enum
209 
  opcodes "opcodes" () OP_ f-opcode
210 
  (("ADD"       45)
211 
   ("ADDI"      13)
212 
   ("AND"       40)
213 
   ("ANDI"      8)
214 
   ("ANDHI"     24)
215 
   ("B"         48)
216 
   ("BI"        56)
217 
   ("BE"        17)
218 
   ("BG"        18)
219 
   ("BGE"       19)
220 
   ("BGEU"      20)
221 
   ("BGU"       21)
222 
   ("BNE"       23)
223 
   ("CALL"      54)
224 
   ("CALLI"     62)
225 
   ("CMPE"      57)
226 
   ("CMPEI"     25)
227 
   ("CMPG"      58)
228 
   ("CMPGI"     26)
229 
   ("CMPGE"     59)
230 
   ("CMPGEI"    27)
231 
   ("CMPGEU"    60)
232 
   ("CMPGEUI"   28)
233 
   ("CMPGU"     61)
234 
   ("CMPGUI"    29)
235 
   ("CMPNE"     63)
236 
   ("CMPNEI"    31)
237 
   ("DIVU"      35)
238 
   ("LB"        4)
239 
   ("LBU"       16)
240 
   ("LH"        7)
241 
   ("LHU"       11)
242 
   ("LW"        10)
243 
   ("MODU"      49)
244 
   ("MUL"       34)
245 
   ("MULI"      2)
246 
   ("NOR"       33)
247 
   ("NORI"      1)
248 
   ("OR"        46)
249 
   ("ORI"       14)
250 
   ("ORHI"      30)
251 
   ("RAISE"     43)
252 
   ("RCSR"      36)
253 
   ("SB"        12)
254 
   ("SEXTB"     44)
255 
   ("SEXTH"     55)
256 
   ("SH"        3)
257 
   ("SL"        47)
258 
   ("SLI"       15)
259 
   ("SR"        37)
260 
   ("SRI"       5)
261 
   ("SRU"       32)
262 
   ("SRUI"      0)
263 
   ("SUB"       50)
264 
   ("SW"        22)
265 
   ("USER"      51)
266 
   ("WCSR"      52)
267 
   ("XNOR"      41)
268 
   ("XNORI"     9)
269 
   ("XOR"       38)
270 
   ("XORI"      6)
271 
  )
272 
)
273 
 
274 
 
275 
; Instructions. Note: Reg-reg must come before reg-imm.
276 
 
277 
(dni add "add" ()
278 
        "add $r2,$r0,$r1"
279 
        (+ OP_ADD r0 r1 r2 (f-resv0 0))
280 
        (set r2 (add r0 r1))
281 
        ()
282 
)
283 
 
284 
(dni addi "add immediate" ()
285 
        "addi $r1,$r0,$imm"
286 
        (+ OP_ADDI r0 r1 imm)
287 
        (set r1 (add r0 (ext SI (trunc HI imm))))
288 
        ()
289 
)
290 
 
291 
(dni and "and" ()
292 
        "and $r2,$r0,$r1"
293 
        (+ OP_AND r0 r1 r2 (f-resv0 0))
294 
        (set r2 (and r0 r1))
295 
        ()
296 
)
297 
 
298 
(dni andi "and immediate" ()
299 
        "andi $r1,$r0,$uimm"
300 
        (+ OP_ANDI r0 r1 uimm)
301 
        (set r1 (and r0 (zext SI uimm)))
302 
        ()
303 
)
304 
 
305 
(dni andhii "and high immediate" ()
306 
        "andhi $r1,$r0,$hi16"
307 
        (+ OP_ANDHI r0 r1 hi16)
308 
        (set r1 (and r0 (sll SI hi16 16)))
309 
        ()
310 
)
311 
 
312 
(dni b "branch" ()
313 
        "b $r0"
314 
        (+ OP_B r0 (f-r1 0) (f-r2 0) (f-resv0 0))
315 
        (set pc (c-call USI "@cpu@_b_insn" r0 f-r0))
316 
        ()
317 
)
318 
 
319 
(dni bi "branch immediate" ()
320 
        "bi $call"
321 
        (+ OP_BI call)
322 
        (set pc (ext SI call))
323 
        ()
324 
)
325 
 
326 
(dni be "branch equal" ()
327 
        "be $r0,$r1,$branch"
328 
        (+ OP_BE r0 r1 branch)
329 
        (if (eq r0 r1)
330 
            (set pc branch)
331 
        )
332 
        ()
333 
)
334 
 
335 
(dni bg "branch greater" ()
336 
        "bg $r0,$r1,$branch"
337 
        (+ OP_BG r0 r1 branch)
338 
        (if (gt r0 r1)
339 
            (set pc branch)
340 
        )
341 
        ()
342 
)
343 
 
344 
(dni bge "branch greater or equal" ()
345 
        "bge $r0,$r1,$branch"
346 
        (+ OP_BGE r0 r1 branch)
347 
        (if (ge r0 r1)
348 
            (set pc branch)
349 
        )
350 
        ()
351 
)
352 
 
353 
(dni bgeu "branch greater or equal unsigned" ()
354 
        "bgeu $r0,$r1,$branch"
355 
        (+ OP_BGEU r0 r1 branch)
356 
        (if (geu r0 r1)
357 
            (set pc branch)
358 
        )
359 
        ()
360 
)
361 
 
362 
(dni bgu "branch greater unsigned" ()
363 
        "bgu $r0,$r1,$branch"
364 
        (+ OP_BGU r0 r1 branch)
365 
        (if (gtu r0 r1)
366 
            (set pc branch)
367 
        )
368 
        ()
369 
)
370 
 
371 
(dni bne "branch not equal" ()
372 
        "bne $r0,$r1,$branch"
373 
        (+ OP_BNE r0 r1 branch)
374 
        (if (ne r0 r1)
375 
            (set pc branch)
376 
        )
377 
        ()
378 
)
379 
 
380 
(dni call "call" ()
381 
        "call $r0"
382 
        (+ OP_CALL r0 (f-r1 0) (f-r2 0) (f-resv0 0))
383 
        (sequence ()
384 
                (set (reg h-gr 29) (add pc 4))
385 
                (set pc r0)
386 
        )
387 
        ()
388 
)
389 
 
390 
(dni calli "call immediate" ()
391 
        "calli $call"
392 
        (+ OP_CALLI call)
393 
        (sequence ()
394 
                (set (reg h-gr 29) (add pc 4))
395 
                (set pc (ext SI call))
396 
        )
397 
        ()
398 
)
399 
 
400 
(dni cmpe "compare equal" ()
401 
        "cmpe $r2,$r0,$r1"
402 
        (+ OP_CMPE r0 r1 r2 (f-resv0 0))
403 
        (set r2 (eq SI r0 r1))
404 
        ()
405 
)
406 
 
407 
(dni cmpei "compare equal immediate" ()
408 
        "cmpei $r1,$r0,$imm"
409 
        (+ OP_CMPEI r0 r1 imm)
410 
        (set r1 (eq SI r0 (ext SI (trunc HI imm))))
411 
        ()
412 
)
413 
 
414 
(dni cmpg "compare greater than" ()
415 
        "cmpg $r2,$r0,$r1"
416 
        (+ OP_CMPG r0 r1 r2 (f-resv0 0))
417 
        (set r2 (gt SI r0 r1))
418 
        ()
419 
)
420 
 
421 
(dni cmpgi "compare greater than immediate" ()
422 
        "cmpgi $r1,$r0,$imm"
423 
        (+ OP_CMPGI r0 r1 imm)
424 
        (set r1 (gt SI r0 (ext SI (trunc HI imm))))
425 
        ()
426 
)
427 
 
428 
(dni cmpge "compare greater or equal" ()
429 
        "cmpge $r2,$r0,$r1"
430 
        (+ OP_CMPGE r0 r1 r2 (f-resv0 0))
431 
        (set r2 (ge SI r0 r1))
432 
        ()
433 
)
434 
 
435 
(dni cmpgei "compare greater or equal immediate" ()
436 
        "cmpgei $r1,$r0,$imm"
437 
        (+ OP_CMPGEI r0 r1 imm)
438 
        (set r1 (ge SI r0 (ext SI (trunc HI imm))))
439 
        ()
440 
)
441 
 
442 
(dni cmpgeu "compare greater or equal unsigned" ()
443 
        "cmpgeu $r2,$r0,$r1"
444 
        (+ OP_CMPGEU r0 r1 r2 (f-resv0 0))
445 
        (set r2 (geu SI r0 r1))
446 
        ()
447 
)
448 
 
449 
(dni cmpgeui "compare greater or equal unsigned immediate" ()
450 
        "cmpgeui $r1,$r0,$uimm"
451 
        (+ OP_CMPGEUI r0 r1 uimm)
452 
        (set r1 (geu SI r0 (zext SI uimm)))
453 
        ()
454 
)
455 
 
456 
(dni cmpgu "compare greater than unsigned" ()
457 
        "cmpgu $r2,$r0,$r1"
458 
        (+ OP_CMPGU r0 r1 r2 (f-resv0 0))
459 
        (set r2 (gtu SI r0 r1))
460 
        ()
461 
)
462 
 
463 
(dni cmpgui "compare greater than unsigned immediate" ()
464 
        "cmpgui $r1,$r0,$uimm"
465 
        (+ OP_CMPGUI r0 r1 uimm)
466 
        (set r1 (gtu SI r0 (zext SI uimm)))
467 
        ()
468 
)
469 
 
470 
(dni cmpne "compare not equal" ()
471 
        "cmpne $r2,$r0,$r1"
472 
        (+ OP_CMPNE r0 r1 r2 (f-resv0 0))
473 
        (set r2 (ne SI r0 r1))
474 
        ()
475 
)
476 
 
477 
(dni cmpnei "compare not equal immediate" ()
478 
        "cmpnei $r1,$r0,$imm"
479 
        (+ OP_CMPNEI r0 r1 imm)
480 
        (set r1 (ne SI r0 (ext SI (trunc HI imm))))
481 
        ()
482 
)
483 
 
484 
(dni divu "unsigned divide" ()
485 
        "divu $r2,$r0,$r1"
486 
        (+ OP_DIVU r0 r1 r2 (f-resv0 0))
487 
        (set pc (c-call USI "@cpu@_divu_insn" pc f-r0 f-r1 f-r2))
488 
        ()
489 
)
490 
 
491 
(dni lb "load byte" ()
492 
        "lb $r1,($r0+$imm)"
493 
        (+ OP_LB r0 r1 imm)
494 
        (set r1 (ext SI (mem QI (add r0 (ext SI (trunc HI imm))))))
495 
        ()
496 
)
497 
 
498 
(dni lbu "load byte unsigned" ()
499 
        "lbu $r1,($r0+$imm)"
500 
        (+ OP_LBU r0 r1 imm)
501 
        (set r1 (zext SI (mem QI (add r0 (ext SI (trunc HI imm))))))
502 
        ()
503 
)
504 
 
505 
(dni lh "load halfword" ()
506 
        "lh $r1,($r0+$imm)"
507 
        (+ OP_LH r0 r1 imm)
508 
        (set r1 (ext SI (mem HI (add r0 (ext SI (trunc HI imm))))))
509 
        ()
510 
)
511 
 
512 
(dni lhu "load halfword unsigned" ()
513 
        "lhu $r1,($r0+$imm)"
514 
        (+ OP_LHU r0 r1 imm)
515 
        (set r1 (zext SI (mem HI (add r0 (ext SI (trunc HI imm))))))
516 
        ()
517 
)
518 
 
519 
(dni lw "load word" ()
520 
        "lw $r1,($r0+$imm)"
521 
        (+ OP_LW r0 r1 imm)
522 
        (set r1 (mem SI (add r0 (ext SI (trunc HI imm)))))
523 
        ()
524 
)
525 
 
526 
(dni modu "unsigned modulus" ()
527 
        "modu $r2,$r0,$r1"
528 
        (+ OP_MODU r0 r1 r2 (f-resv0 0))
529 
        (set pc (c-call USI "@cpu@_modu_insn" pc f-r0 f-r1 f-r2))
530 
        ()
531 
)
532 
 
533 
(dni mul "mulitply" ()
534 
        "mul $r2,$r0,$r1"
535 
        (+ OP_MUL r0 r1 r2 (f-resv0 0))
536 
        (set r2 (mul r0 r1))
537 
        ()
538 
)
539 
 
540 
(dni muli "multiply immediate" ()
541 
        "muli $r1,$r0,$imm"
542 
        (+ OP_MULI r0 r1 imm)
543 
        (set r1 (mul r0 (ext SI (trunc HI imm))))
544 
        ()
545 
)
546 
 
547 
(dni nor "nor" ()
548 
        "nor $r2,$r0,$r1"
549 
        (+ OP_NOR r0 r1 r2 (f-resv0 0))
550 
        (set r2 (inv (or r0 r1)))
551 
        ()
552 
)
553 
 
554 
(dni nori "nor immediate" ()
555 
        "nori $r1,$r0,$uimm"
556 
        (+ OP_NORI r0 r1 uimm)
557 
        (set r1 (inv (or r0 (zext SI uimm))))
558 
        ()
559 
)
560 
 
561 
(dni or "or" ()
562 
        "or $r2,$r0,$r1"
563 
        (+ OP_OR r0 r1 r2 (f-resv0 0))
564 
        (set r2 (or r0 r1))
565 
        ()
566 
)
567 
 
568 
(dni ori "or immediate" ()
569 
        "ori $r1,$r0,$lo16"
570 
        (+ OP_ORI r0 r1 lo16)
571 
        (set r1 (or r0 (zext SI lo16)))
572 
        ()
573 
)
574 
 
575 
(dni orhii "or high immediate" ()
576 
        "orhi $r1,$r0,$hi16"
577 
        (+ OP_ORHI r0 r1 hi16)
578 
        (set r1 (or r0 (sll SI hi16 16)))
579 
        ()
580 
)
581 
 
582 
(dni rcsr "read control or status register" ()
583 
        "rcsr $r2,$csr"
584 
        (+ OP_RCSR csr (f-r1 0) r2 (f-resv0 0))
585 
        (set r2 csr)
586 
        ()
587 
)
588 
 
589 
(dni sb "store byte" ()
590 
        "sb ($r0+$imm),$r1"
591 
        (+ OP_SB r0 r1 imm)
592 
        (set (mem QI (add r0 (ext SI (trunc HI imm)))) r1)
593 
        ()
594 
)
595 
 
596 
(dni sextb "sign extend byte" ()
597 
        "sextb $r2,$r0"
598 
        (+ OP_SEXTB r0 (f-r1 0) r2 (f-resv0 0))
599 
        (set r2 (ext SI (trunc QI r0)))
600 
        ()
601 
)
602 
 
603 
(dni sexth "sign extend half-word" ()
604 
        "sexth $r2,$r0"
605 
        (+ OP_SEXTH r0 (f-r1 0) r2 (f-resv0 0))
606 
        (set r2 (ext SI (trunc HI r0)))
607 
        ()
608 
)
609 
 
610 
(dni sh "store halfword" ()
611 
        "sh ($r0+$imm),$r1"
612 
        (+ OP_SH r0 r1 imm)
613 
        (set (mem HI (add r0 (ext SI (trunc HI imm)))) r1)
614 
        ()
615 
)
616 
 
617 
(dni sl "shift left" ()
618 
        "sl $r2,$r0,$r1"
619 
        (+ OP_SL r0 r1 r2 (f-resv0 0))
620 
        (set r2 (sll SI r0 r1))
621 
        ()
622 
)
623 
 
624 
(dni sli "shift left immediate" ()
625 
        "sli $r1,$r0,$imm"
626 
        (+ OP_SLI r0 r1 imm)
627 
        (set r1 (sll SI r0 imm))
628 
        ()
629 
)
630 
 
631 
(dni sr "shift right" ()
632 
        "sr $r2,$r0,$r1"
633 
        (+ OP_SR r0 r1 r2 (f-resv0 0))
634 
        (set r2 (sra SI r0 r1))
635 
        ()
636 
)
637 
 
638 
(dni sri "shift right immediate" ()
639 
        "sri $r1,$r0,$imm"
640 
        (+ OP_SRI r0 r1 imm)
641 
        (set r1 (sra SI r0 imm))
642 
        ()
643 
)
644 
 
645 
(dni sru "shift right unsigned" ()
646 
        "sru $r2,$r0,$r1"
647 
        (+ OP_SRU r0 r1 r2 (f-resv0 0))
648 
        (set r2 (srl SI r0 r1))
649 
        ()
650 
)
651 
 
652 
(dni srui "shift right unsigned immediate" ()
653 
        "srui $r1,$r0,$imm"
654 
        (+ OP_SRUI r0 r1 imm)
655 
        (set r1 (srl SI r0 imm))
656 
        ()
657 
)
658 
 
659 
(dni sub "subtract" ()
660 
        "sub $r2,$r0,$r1"
661 
        (+ OP_SUB r0 r1 r2 (f-resv0 0))
662 
        (set r2 (sub r0 r1))
663 
        ()
664 
)
665 
 
666 
(dni sw "store word" ()
667 
        "sw ($r0+$imm),$r1"
668 
        (+ OP_SW r0 r1 imm)
669 
        (set (mem SI (add r0 (ext SI (trunc HI imm)))) r1)
670 
        ()
671 
)
672 
 
673 
(dni user "user defined instruction" ()
674 
        "user $r2,$r0,$r1,$user"
675 
        (+ OP_USER r0 r1 r2 user)
676 
        (set r2 (c-call SI "@cpu@_user_insn" r0 r1 user))
677 
        ()
678 
)
679 
 
680 
(dni wcsr "write control or status register" ()
681 
        "wcsr $csr,$r1"
682 
        (+ OP_WCSR csr r1 (f-r2 0) (f-resv0 0))
683 
        (c-call VOID "@cpu@_wcsr_insn" f-csr r1)
684 
        ()
685 
)
686 
 
687 
(dni xor "xor" ()
688 
        "xor $r2,$r0,$r1"
689 
        (+ OP_XOR r0 r1 r2 (f-resv0 0))
690 
        (set r2 (xor r0 r1))
691 
        ()
692 
)
693 
 
694 
(dni xori "xor immediate" ()
695 
        "xori $r1,$r0,$uimm"
696 
        (+ OP_XORI r0 r1 uimm)
697 
        (set r1 (xor r0 (zext SI uimm)))
698 
        ()
699 
)
700 
 
701 
(dni xnor "xnor" ()
702 
        "xnor $r2,$r0,$r1"
703 
        (+ OP_XNOR r0 r1 r2 (f-resv0 0))
704 
        (set r2 (inv (xor r0 r1)))
705 
        ()
706 
)
707 
 
708 
(dni xnori "xnor immediate" ()
709 
        "xnori $r1,$r0,$uimm"
710 
        (+ OP_XNORI r0 r1 uimm)
711 
        (set r1 (inv (xor r0 (zext SI uimm))))
712 
        ()
713 
)
714 
 
715 
; Pseudo instructions
716 
 
717 
(dni break "breakpoint" ()
718 
        "break"
719 
        (+ OP_RAISE (f-exception 2))
720 
        (set pc (c-call USI "@cpu@_break_insn" pc))
721 
        ()
722 
)
723 
 
724 
(dni scall "system call" ()
725 
        "scall"
726 
        (+ OP_RAISE (f-exception 7))
727 
        (set pc (c-call USI "@cpu@_scall_insn" pc))
728 
        ()
729 
)
730 
 
731 
(dni bret "return from breakpoint" (ALIAS)
732 
        "bret"
733 
        (+ OP_B (f-r0 31) (f-r1 0) (f-r2 0) (f-resv0 0))
734 
        (set pc (c-call USI "@cpu@_bret_insn" r0))
735 
        ()
736 
)
737 
 
738 
(dni eret "return from exception" (ALIAS)
739 
        "eret"
740 
        (+ OP_B (f-r0 30) (f-r1 0) (f-r2 0) (f-resv0 0))
741 
        (set pc (c-call USI "@cpu@_eret_insn" r0))
742 
        ()
743 
)
744 
 
745 
(dni ret "return" (ALIAS)
746 
        "ret"
747 
        (+ OP_B (f-r0 29) (f-r1 0) (f-r2 0) (f-resv0 0))
748 
        (set pc r0)
749 
        ()
750 
)
751 
 
752 
(dni mv "move" (ALIAS)
753 
        "mv $r2,$r0"
754 
        (+ OP_OR r0 (f-r1 0) r2 (f-resv0 0))
755 
        (set r2 r0)
756 
        ()
757 
)
758 
 
759 
(dni mvi "move immediate" (ALIAS)
760 
        "mvi $r1,$imm"
761 
        (+ OP_ADDI (f-r0 0) r1 imm)
762 
        (set r1 (add r0 (ext SI (trunc HI imm))))
763 
        ()
764 
)
765 
 
766 
(dni mvui "move unsigned immediate" (ALIAS)
767 
        "mvu $r1,$lo16"
768 
        (+ OP_ORI (f-r0 0) r1 lo16)
769 
        (set r1 (zext SI lo16))
770 
        ()
771 
)
772 
 
773 
(dni mvhi "move high immediate" (ALIAS)
774 
        "mvhi $r1,$hi16"
775 
        (+ OP_ORHI (f-r0 0) r1 hi16)
776 
        (set r1 (or r0 (sll SI hi16 16)))
777 
        ()
778 
)
779 
 
780 
(dni mva "move address" (ALIAS)
781 
        "mva $r1,$gp16"
782 
        (+ OP_ADDI (f-r0 26) r1 gp16)
783 
        (set r1 (add r0 (ext SI (trunc HI gp16))))
784 
        ()
785 
)
786 
 
787 
(dni not "not" (ALIAS)
788 
        "not $r2,$r0"
789 
        (+ OP_XNOR r0 (f-r1 0) r2 (f-resv0 0))
790 
        (set r2 (inv r0))
791 
        ()
792 
)
793 
 
794 
(dni nop "nop" (ALIAS)
795 
        "nop"
796 
        (+ OP_ADDI (f-r0 0) (f-r1 0) (f-imm 0))
797 
        (set r0 r0)
798 
        ()
799 
)
800 
 
801 
(dni lbgprel "load byte gp relative" (ALIAS)
802 
        "lb $r1,$gp16"
803 
        (+ OP_LB (f-r0 26) r1 gp16)
804 
        (set r1 (ext SI (mem QI (add r0 (ext SI (trunc HI gp16))))))
805 
        ()
806 
)
807 
 
808 
(dni lbugprel "load byte unsigned gp relative" (ALIAS)
809 
        "lbu $r1,$gp16"
810 
        (+ OP_LBU (f-r0 26) r1 gp16)
811 
        (set r1 (zext SI (mem QI (add r0 (ext SI (trunc HI gp16))))))
812 
        ()
813 
)
814 
 
815 
(dni lhgprel "load halfword gp relative" (ALIAS)
816 
        "lh $r1,$gp16"
817 
        (+ OP_LH (f-r0 26) r1 gp16)
818 
        (set r1 (ext SI (mem HI (add r0 (ext SI (trunc HI gp16))))))
819 
        ()
820 
)
821 
 
822 
(dni lhugprel "load halfword unsigned gp relative" (ALIAS)
823 
        "lhu $r1,$gp16"
824 
        (+ OP_LHU (f-r0 26) r1 gp16)
825 
        (set r1 (zext SI (mem HI (add r0 (ext SI (trunc HI gp16))))))
826 
        ()
827 
)
828 
 
829 
(dni lwgprel "load word gp relative" (ALIAS)
830 
        "lw $r1,$gp16"
831 
        (+ OP_LW (f-r0 26) r1 gp16)
832 
        (set r1 (mem SI (add r0 (ext SI (trunc HI gp16)))))
833 
        ()
834 
)
835 
 
836 
(dni sbgprel "store byte gp relative" (ALIAS)
837 
        "sb $gp16,$r1"
838 
        (+ OP_SB (f-r0 26) r1 gp16)
839 
        (set (mem QI (add r0 (ext SI (trunc HI gp16)))) r1)
840 
        ()
841 
)
842 
 
843 
(dni shgprel "store halfword gp relative" (ALIAS)
844 
        "sh $gp16,$r1"
845 
        (+ OP_SH (f-r0 26) r1 gp16)
846 
        (set (mem HI (add r0 (ext SI (trunc HI gp16)))) r1)
847 
        ()
848 
)
849 
 
850 
(dni swgprel "store word gp relative" (ALIAS)
851 
        "sw $gp16,$r1"
852 
        (+ OP_SW (f-r0 26) r1 gp16)
853 
        (set (mem SI (add r0 (ext SI (trunc HI gp16)))) r1)
854 
        ()
855 
)
856 
 
857 
(dni lwgotrel "load word got relative" (ALIAS)
858 
        "lw $r1,(gp+$got16)"
859 
        (+ OP_LW (f-r0 26) r1 got16)
860 
        (set r1 (mem SI (add r0 (ext SI (trunc HI got16)))))
861 
        ()
862 
)
863 
 
864 
(dni orhigotoffi "or high got offset immediate" (ALIAS)
865 
        "orhi $r1,$r0,$gotoffhi16"
866 
        (+ OP_ORHI r0 r1 gotoffhi16)
867 
        (set r1 (or r0 (sll SI gotoffhi16 16)))
868 
        ()
869 
)
870 
 
871 
(dni addgotoff "add got offset" (ALIAS)
872 
        "addi $r1,$r0,$gotofflo16"
873 
        (+ OP_ADDI r0 r1 gotofflo16)
874 
        (set r1 (add r0 (ext SI (trunc HI gotofflo16))))
875 
        ()
876 
)
877 
 
878 
(dni swgotoff "store word got offset" (ALIAS)
879 
        "sw ($r0+$gotofflo16),$r1"
880 
        (+ OP_SW r0 r1 gotofflo16)
881 
        (set (mem SI (add r0 (ext SI (trunc HI gotofflo16)))) r1)
882 
        ()
883 
)
884 
 
885 
(dni lwgotoff "load word got offset" (ALIAS)
886 
        "lw $r1,($r0+$gotofflo16)"
887 
        (+ OP_LW r0 r1 gotofflo16)
888 
        (set r1 (mem SI (add r0 (ext SI (trunc HI gotofflo16)))))
889 
        ()
890 
)
891 
 
892 
(dni shgotoff "store half word got offset" (ALIAS)
893 
        "sh ($r0+$gotofflo16),$r1"
894 
        (+ OP_SH r0 r1 gotofflo16)
895 
        (set (mem HI (add r0 (ext SI (trunc HI gotofflo16)))) r1)
896 
        ()
897 
)
898 
 
899 
(dni lhgotoff "load half word got offset" (ALIAS)
900 
        "lh $r1,($r0+$gotofflo16)"
901 
        (+ OP_LH r0 r1 gotofflo16)
902 
        (set r1 (ext SI (mem HI (add r0 (ext SI (trunc HI gotofflo16))))))
903 
        ()
904 
)
905 
 
906 
(dni lhugotoff "load half word got offset unsigned" (ALIAS)
907 
        "lhu $r1,($r0+$gotofflo16)"
908 
        (+ OP_LHU r0 r1 gotofflo16)
909 
        (set r1 (zext SI (mem HI (add r0 (ext SI (trunc HI gotofflo16))))))
910 
        ()
911 
)
912 
 
913 
(dni sbgotoff "store byte got offset" (ALIAS)
914 
        "sb ($r0+$gotofflo16),$r1"
915 
        (+ OP_SB r0 r1 gotofflo16)
916 
        (set (mem QI (add r0 (ext SI (trunc HI gotofflo16)))) r1)
917 
        ()
918 
)
919 
 
920 
(dni lbgotoff "load byte got offset" (ALIAS)
921 
        "lb $r1,($r0+$gotofflo16)"
922 
        (+ OP_LB r0 r1 gotofflo16)
923 
        (set r1 (ext SI (mem QI (add r0 (ext SI (trunc HI gotofflo16))))))
924 
        ()
925 
)
926 
 
927 
(dni lbugotoff "load byte got offset unsigned" (ALIAS)
928 
        "lbu $r1,($r0+$gotofflo16)"
929 
        (+ OP_LBU r0 r1 gotofflo16)
930 
        (set r1 (zext SI (mem QI (add r0 (ext SI (trunc HI gotofflo16))))))
931 
        ()
932 
)

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