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1.1 root 1: ! m68k-iset.txt: the m68k instruction set
2:
3: ! $Id: m68k-iset.txt,v 1.4 2003/04/26 20:59:38 fredette Exp $
4:
5: ! load some common EA categories:
6: eax-cat all ro yyyyyyyyyyyynnn
7: eax-cat data ro ynyyyyyyyyyynnn
8: eax-cat datalt rw ynyyyyyyynnnnnn ! example: andi pp 122
9: eax-cat memalt rw nnyyyyyyynnnnnn
10: eax-cat control un nnynnyyyyyynnnn
11:
12: 0000 0000 0011 1100 ori_ccr #8 ! ori_ccr pp 258
13: 0000 0000 0111 1100 ori_sr #16 ! ori_sr pp 480
14: 0000 0000 ssxx xxxx or.s #s, xs/datalt ! ori pp 256
15:
16: 0000 0010 0011 1100 andi_ccr #8 ! andi_ccr pp 123
17: 0000 0010 0111 1100 andi_sr #16 ! andi_sr pp 455
18: 0000 0010 ssxx xxxx and.s #s, xs/datalt ! andi pp 121
19:
20: 0000 0100 ssxx xxxx sub.s #s, xs/datalt ! subi pp 282
21:
22: .if m68020
23: 0000 0110 1100 0ddd rtm %d.32 ! rtm pp 270
24: 0000 0110 1100 1aaa rtm %a.32 ! rtm pp 270
25: 0000 0110 11xx xxxx callm #8, x0/control ! callm pp 167
26: .endif
27:
28: 0000 0110 ssxx xxxx add.s #s, xs/datalt ! addi pp 112
29:
30: .if m68020 || m68030
31: specop specop16 cmp2_chk2
32: 0000 0ss0 11xx xxxx cmp2_chk2 X, x0/control ! chk2 pp 174, cmp2 pp 185
33: specop specop16 cas
34: 0000 1SS0 11xx xxxx cas.S X, x0/memalt/un ! cas pp 169
35: specop cas2 cas2
36: 0000 1100 1111 1100 cas2_16 ! cas2 pp 169
37: 0000 1110 1111 1100 cas2_32 ! cas2 pp 169
38: .endif
39:
40: 0000 1010 0011 1100 eori_ccr #8 ! eori_ccr pp 207
41: 0000 1010 0111 1100 eori_sr #16 ! eori_sr pp 463
42: 0000 1010 ssxx xxxx eor.s #s, xs/datalt ! eori pp 205
43:
44: ! cmpi addressing modes are unusual. per pp 183, immediate is
45: ! never allowed, and on the 000 and 010, PC-relative addressing
46: ! modes are not allowed:
47: .if m68000 || m68010
48: eax-cat cmpi ro ynyyyyyyynnnnnn
49: .endif
50: .if m68020 || m68030
51: eax-cat cmpi ro ynyyyyyyyyynnnn
52: .endif
53: 0000 1100 ssxx xxxx cmp.s #s, xs/cmpi ! cmpi pp 182
54:
55: eax-cat bitro ro nnyyyyyyyyyynnn
56: eax-cat bitrw rw nnyyyyyyynnnnnn
57: 0000 1000 0000 0ddd btst32 #8, %d.32 ! btst pp 164
58: 0000 1000 00xx xxxx btst8 #8, x8/bitro ! btst pp 164
59: 0000 1000 0100 0ddd bchg32 #8, %d.32 ! bchg pp 130
60: 0000 1000 01xx xxxx bchg8 #8, x8/bitrw ! bchg pp 130
61: 0000 1000 1000 0ddd bclr32 #8, %d.32 ! bclr pp 133
62: 0000 1000 10xx xxxx bclr8 #8, x8/bitrw ! bclr pp 133
63: 0000 1000 1100 0ddd bset32 #8, %d.32 ! bset pp 159
64: 0000 1000 11xx xxxx bset8 #8, x8/bitrw ! bset pp 159
65:
66: .if m68010 || m68020 || m68030
67: ! the moves specop handling forces the right EA cycles:
68: specop moves moves.s
69: 0000 1110 ssxx xxxx moves.s X, xs/memalt ! moves pp 477
70: .endif
71:
72: 0000 ddd1 0000 0DDD btst32 %d.8, %D.32 ! btst pp 164
73: 0000 ddd1 00xx xxxx btst8 %d.8, x8/bitro ! btst pp 164
74: 0000 ddd1 0100 0DDD bchg32 %d.8, %D.32 ! bchg pp 130
75: 0000 ddd1 01xx xxxx bchg8 %d.8, x8/bitrw ! bchg pp 130
76: 0000 ddd1 1000 0DDD bclr32 %d.8, %D.32 ! bclr pp 133
77: 0000 ddd1 10xx xxxx bclr8 %d.8, x8/bitrw ! bclr pp 133
78: 0000 ddd1 1100 0DDD bset32 %d.8, %D.32 ! bset pp 159
79: 0000 ddd1 11xx xxxx bset8 %d.8, x8/bitrw ! bset pp 159
80:
81: ! we don't decode the data register field, to allow for better EA
82: ! submap reuse, and this is a rare function anyways:
83: 0000 ddd1 0000 1aaa movep_mr16 X, %a.32 ! movep pp 234
84: 0000 ddd1 0100 1aaa movep_mr32 X, %a.32 ! movep pp 234
85: 0000 ddd1 1000 1aaa movep_rm16 X, %a.32 ! movep pp 234
86: 0000 ddd1 1100 1aaa movep_rm32 X, %a.32 ! movep pp 234
87:
88: 0010 aaa0 01xx xxxx movea32 %a.32, x32/all ! movea pp 222
89: 0011 aaa0 01xx xxxx movea16 %a.32, x16/all ! movea pp 222
90:
91: 00SS yyyy yyxx xxxx move.S yS/datalt/wo, xS/all ! move pp 219
92:
93: ! move_from_sr isn't privileged on the 68000:
94: .if m68000
95: 0100 0000 11xx xxxx move_from_sr0 X, x16/datalt ! move_from_sr pp 228
96: .endif
97: .if m68010 || m68020 || m68030
98: 0100 0000 11xx xxxx move_from_sr X, x16/datalt/wo ! move_from_sr pp 470
99: 0100 0010 11xx xxxx move_from_ccr X, x16/datalt/wo ! move_from_ccr pp 224
100: .endif
101:
102: 0100 0000 ssxx xxxx negx.s X, xs/datalt ! negx pp 249
103:
104: ! the EA is read before it is written on on the 68000, pp 177
105: .if m68000
106: 0100 0010 ssxx xxxx clr.s X, xs/datalt ! clr pp 176
107: .endif
108: .if m68010 || m68020 || m68030
109: 0100 0010 ssxx xxxx clr.s X, xs/datalt/wo ! clr pp 176
110: .endif
111:
112: 0100 0100 11xx xxxx move_to_ccr X, x16/data ! move_to_ccr pp 226
113:
114: 0100 0100 ssxx xxxx neg.s X, xs/datalt ! neg pp 246
115:
116: 0100 0110 11xx xxxx move_to_sr X, x16/data ! move_to_sr pp 472
117:
118: 0100 0110 ssxx xxxx not.s X, xs/datalt ! not pp 251
119:
120: 0100 1000 1000 0ddd extw X, %d.16 ! ext pp 209
121: 0100 1000 1100 0ddd extl X, %d.32 ! ext pp 209
122: .if m68020 || m68030
123: 0100 1001 1100 0ddd extbl X, %d.32 ! ext pp 209
124: .endif
125:
126: .if m68020 || m68030
127: 0100 1000 0000 1aaa link #32, %a.32 ! link pp 214
128: .endif
129:
130: 0100 1000 00xx xxxx nbcd X, x8/datalt ! nbcd pp 244
131:
132: 0100 1000 0100 0ddd swap X, %d.32 ! swap pp 288
133:
134: .if m68010 || m68020 || m68030
135: 0100 1000 0100 1??? bkpt ! bkpt pp 157
136: .endif
137:
138: 0100 1000 01xx xxxx pea X, x0/control ! pea pp 262
139:
140: specop illegal illegal
141: 0100 1010 1111 1100 illegal ! illegal pp 210
142:
143: 0100 1010 1100 0ddd tas_r X, %d.8 ! tas pp 289
144: 0100 1010 11xx xxxx tas X, x0/memalt/un ! tas pp 289
145:
146: ! tst addressing modes are unusual. per pp 296, on the 68000
147: ! and 68010, PC-relative addressing modes and immediates are not
148: ! allowed:
149: .if m68000 || m68010
150: eax-cat tst ro ynyyyyyyynnnnnn
151: 0100 1010 ssxx xxxx tst.s X, xs/tst ! tst pp 295
152: .endif
153: .if m68020 || m68030
154: 0100 1010 ssxx xxxx tst.s X, xs/all ! tst pp 295
155: .endif
156:
157: .if m68020 || m68030
158: specop mulul mulul
159: specop divul divul
160: 0100 1100 00xx xxxx mulul X, x32/data ! mulsl pp 238, mulul pp 241
161: 0100 1100 01xx xxxx divul X, x32/data ! divsl pp 195, divul pp 199
162: .endif
163:
164: 0100 1110 0100 ???? trap ! trap pp 291
165:
166: 0100 1110 0101 0aaa link #16S32, %a.32 ! link pp 214
167:
168: 0100 1110 0101 1aaa unlk %a.32 ! unlk pp 297
169:
170: 0100 1110 0110 ?aaa move_usp X, %a.32 ! move_usp pp 474
171:
172: 0100 1110 0111 0000 reset ! reset pp 536
173:
174: 0100 1110 0111 0001 nop ! nop pp 250
175:
176: specop specop16 stop
177: 0100 1110 0111 0010 stop ! stop pp 538
178:
179: 0100 1110 0111 0011 rte ! rte pp 537
180:
181: .if m68010 || m68020 || m68030
182: 0100 1110 0111 0100 rtd #16S32 ! rtd pp 269
183: .endif
184:
185: 0100 1110 0111 0101 rts ! rts pp 272
186:
187: 0100 1110 0111 0110 trapv ! trapv pp 294
188:
189: 0100 1110 0111 0111 rtr ! rtr pp 271
190:
191: .if m68010 || m68020 || m68030
192: specop specop16 movec
193: 0100 1110 0111 101? movec ! movec pp 475
194: .endif
195:
196: 0100 1110 10xx xxxx jsr X, x0/control ! jsr pp 212
197: 0100 1110 11xx xxxx jmp X, x0/control ! jmp pp 211
198:
199: eax-cat movem_rm un nnynyyyyynnnnnn
200: eax-cat movem_mr un nnyynyyyyyynnnn
201: specop specop16 movem_rm.s movem_mr.s
202: 0100 1000 10xx xxxx movem_rm16 X, x0/movem_rm ! movem pp 231
203: 0100 1000 11xx xxxx movem_rm32 X, x0/movem_rm ! movem pp 231
204: 0100 1100 10xx xxxx movem_mr16 X, x0/movem_mr ! movem pp 231
205: 0100 1100 11xx xxxx movem_mr32 X, x0/movem_mr ! movem pp 231
206:
207: 0100 aaa1 11xx xxxx lea %a.32, x0/control ! lea pp 213
208:
209: 0100 ddd1 00xx xxxx chk32 %d.32, x32/data ! chk pp 173
210: 0100 ddd1 10xx xxxx chk16 %d.16, x16/data ! chk pp 173
211:
212: eax-cat alterable rw ynyyyyyyynnnnnn
213: 0101 qqq0 ss00 1aaa adda32 #q.32, %a.32 ! addq pp 114
214: 0101 qqq0 ssxx xxxx add.s #q.s, xs/alterable ! addq pp 114
215: 0101 qqq1 ss00 1aaa suba32 #q.32, %a.32 ! subq pp 284
216: 0101 qqq1 ssxx xxxx sub.s #q.s, xs/alterable ! subq pp 284
217:
218: 0101 cccc 1100 1ddd dbcc %d.16, #16 ! dbcc pp 193
219:
220: .if m68020 || m68030
221: 0101 cccc 1111 1010 trapcc #16 ! trapcc pp 292
222: 0101 cccc 1111 1011 trapcc #32 ! trapcc pp 292
223: 0101 cccc 1111 1100 trapcc ! trapcc pp 292
224: .endif
225:
226: 0101 cccc 11xx xxxx scc X, x8/datalt ! scc pp 275
227:
228: ! bcc pp 128, bra pp 158, bsr pp 162
229: specop bcc bcc
230: 0110 cccc ???? ???? bcc
231:
232: 0111 ddd0 ???? ???? moveq32 X, %d.32 ! moveq pp 237
233:
234: 1000 ddd0 11xx xxxx divu #d, x16/data ! divu pp 199
235:
236: 1000 ???1 0000 ???? sbcd ! sbcd pp 273
237: .if m68020 || m68030
238: specop specop16 pack unpk
239: 1000 ???1 0100 ???? pack ! pack pp 259
240: 1000 ???1 1000 ???? unpk ! unpk pp 298
241: .endif
242:
243: 1000 ddd1 11xx xxxx divs #d, x16/data ! divs pp 195
244:
245: 1000 ddd0 ssxx xxxx or.s xs/data, %d.s ! or pp 253
246: 1000 ddd1 ssxx xxxx or.s %d.s, xs/memalt ! or pp 253
247:
248: 1001 ???1 ss00 ???? subx.s ! subx pp 286
249:
250: 1001 ddd0 ssxx xxxx sub.s xs/all, %d.s ! sub pp 277
251: 1001 ddd1 ssxx xxxx sub.s %d.s, xs/memalt ! sub pp 277
252: 1001 aaa0 11xx xxxx suba16 x16/all, %a.32 ! suba pp 280
253: 1001 aaa1 11xx xxxx suba32 x32/all, %a.32 ! suba pp 280
254:
255: 1011 ???1 ss00 1??? cmpm.s ! cmpm pp 184
256:
257: 1011 ddd0 ssxx xxxx cmp.s xs/all, %d.s ! cmp pp 178
258: 1011 ddd1 ssxx xxxx eor.s %d.s, xs/datalt ! eor pp 203
259: 1011 aaa0 11xx xxxx cmpa16 x16/all, %a.32 ! cmpa pp 180
260: 1011 aaa1 11xx xxxx cmp32 x32/all, %a.32 ! cmpa pp 180
261:
262: 1100 ddd0 11xx xxxx mulu #d, x16/data ! mulu pp 241
263:
264: 1100 ???1 0000 ???? abcd ! abcd pp 105
265:
266: 1100 ddd1 11xx xxxx muls #d, x16/data ! muls pp 238
267:
268: 1100 ddd1 0100 0DDD exg %d.32, %D.32 ! exg pp 208
269: 1100 aaa1 0100 1AAA exg %a.32, %A.32 ! exg pp 208
270: 1100 ddd1 1000 1aaa exg %d.32, %a.32 ! exg pp 208
271:
272: 1100 ddd0 ssxx xxxx and.s xs/data, %d.s ! and pp 118
273: 1100 ddd1 ssxx xxxx and.s %d.s, xs/memalt ! and pp 118
274:
275: 1101 ???1 ss00 ???? addx.s ! addx pp 116
276:
277: 1101 ddd0 ssxx xxxx add.s xs/all, %d.s ! add pp 107
278: 1101 ddd1 ssxx xxxx add.s %d.s, xs/memalt ! add pp 107
279: 1101 aaa0 11xx xxxx adda16 x16/all, %a.32 ! adda pp 110
280: 1101 aaa1 11xx xxxx adda32 x32/all, %a.32 ! adda pp 110
281:
282: 1110 0000 11xx xxxx asr16 #1.8, x16/memalt ! asr pp 124
283: 1110 0001 11xx xxxx asl16 #1.8, x16/memalt ! asl pp 124
284:
285: 1110 0010 11xx xxxx lsr16 #1.8, x16/memalt ! lsr pp 216
286: 1110 0011 11xx xxxx lsl16 #1.8, x16/memalt ! lsl pp 216
287:
288: 1110 0100 11xx xxxx roxr16 #1.8, x16/memalt ! roxr pp 263
289: 1110 0101 11xx xxxx roxl16 #1.8, x16/memalt ! roxl pp 263
290:
291: 1110 0110 11xx xxxx ror16 #1.8, x16/memalt ! ror pp 263
292: 1110 0111 11xx xxxx rol16 #1.8, x16/memalt ! rol pp 263
293:
294: .if m68020 || m68030
295: eax-cat bitfieldro un nnynnyyyyyynnnn
296: eax-cat bitfieldrw un nnynnyyyynnnnnn
297: specop specop16 bftst bfextu bfchg bfexts bfclr bfffo bfset bfins
298: 1110 1000 1100 0ddd bftst ! bftst pp 154
299: 1110 1000 11xx xxxx bftst X, x0/bitfieldro ! bftst pp 154
300: 1110 1001 1100 0ddd bfextu ! bfextu pp 143
301: 1110 1001 11xx xxxx bfextu X, x0/bitfieldro ! bfextu pp 143
302: 1110 1010 1100 0ddd bfchg ! bfchg pp 137
303: 1110 1010 11xx xxxx bfchg X, x0/bitfieldrw ! bfchg pp 137
304: 1110 1011 1100 0ddd bfexts ! bfexts pp 141
305: 1110 1011 11xx xxxx bfexts X, x0/bitfieldro ! bfexts pp 141
306: 1110 1100 1100 0ddd bfclr ! bfclr pp 138
307: 1110 1100 11xx xxxx bfclr X, x0/bitfieldrw ! bfclr pp 138
308: 1110 1101 1100 0ddd bfffo ! bfffo pp 146
309: 1110 1101 11xx xxxx bfffo X, x0/bitfieldro ! bfffo pp 146
310: 1110 1110 1100 0ddd bfset ! bfset pp 152
311: 1110 1110 11xx xxxx bfset X, x0/bitfieldrw ! bfset pp 152
312: 1110 1111 1100 0ddd bfins ! bfins pp 149
313: 1110 1111 11xx xxxx bfins X, x0/bitfieldrw ! bfins pp 149
314: .endif
315:
316: 1110 qqq0 ss00 0ddd asr.s #q.8, %d.s ! asr pp 124
317: 1110 DDD0 ss10 0ddd asr.s %D.8, %d.s ! asr pp 124
318: 1110 qqq1 ss00 0ddd asl.s #q.8, %d.s ! asl pp 124
319: 1110 DDD1 ss10 0ddd asl.s %D.8, %d.s ! asl pp 124
320:
321: 1110 qqq0 ss00 1ddd lsr.s #q.8, %d.s ! lsr pp 216
322: 1110 DDD0 ss10 1ddd lsr.s %D.8, %d.s ! lsr pp 216
323: 1110 qqq1 ss00 1ddd lsl.s #q.8, %d.s ! lsl pp 216
324: 1110 DDD1 ss10 1ddd lsl.s %D.8, %d.s ! lsl pp 216
325:
326: 1110 qqq0 ss01 0ddd roxr.s #q.8, %d.s ! roxr pp 263
327: 1110 DDD0 ss11 0ddd roxr.s %D.8, %d.s ! roxr pp 263
328: 1110 qqq1 ss01 0ddd roxl.s #q.8, %d.s ! roxl pp 263
329: 1110 DDD1 ss11 0ddd roxl.s %D.8, %d.s ! roxl pp 263
330:
331: 1110 qqq0 ss01 1ddd ror.s #q.8, %d.s ! ror pp 263
332: 1110 DDD0 ss11 1ddd ror.s %D.8, %d.s ! ror pp 263
333: 1110 qqq1 ss01 1ddd rol.s #q.8, %d.s ! rol pp 263
334: 1110 DDD1 ss11 1ddd rol.s %D.8, %d.s ! rol pp 263
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