1 /* $OpenBSD: mips_opcode.h,v 1.2 1999/01/27 04:46:05 imp Exp $ */
2
3 /*-
4 * Copyright (c) 1992, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Ralph Campbell.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 4. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 * from: @(#)mips_opcode.h 8.1 (Berkeley) 6/10/93
35 * JNPR: mips_opcode.h,v 1.1 2006/08/07 05:38:57 katta
36 * $FreeBSD: releng/11.2/sys/mips/include/mips_opcode.h 331722 2018-03-29 02:50:57Z eadler $
37 */
38
39 #ifndef _MACHINE_MIPS_OPCODE_H_
40 #define _MACHINE_MIPS_OPCODE_H_
41
42 /*
43 * Define the instruction formats and opcode values for the
44 * MIPS instruction set.
45 */
46 #include <machine/endian.h>
47
48 /*
49 * Define the instruction formats.
50 */
51 typedef union {
52 unsigned word;
53
54 #if BYTE_ORDER == BIG_ENDIAN
55 struct {
56 unsigned op: 6;
57 unsigned rs: 5;
58 unsigned rt: 5;
59 unsigned imm: 16;
60 } IType;
61
62 struct {
63 unsigned op: 6;
64 unsigned target: 26;
65 } JType;
66
67 struct {
68 unsigned op: 6;
69 unsigned rs: 5;
70 unsigned rt: 5;
71 unsigned rd: 5;
72 unsigned shamt: 5;
73 unsigned func: 6;
74 } RType;
75
76 struct {
77 unsigned op: 6; /* always '0x11' */
78 unsigned : 1; /* always '1' */
79 unsigned fmt: 4;
80 unsigned ft: 5;
81 unsigned fs: 5;
82 unsigned fd: 5;
83 unsigned func: 6;
84 } FRType;
85 #endif
86 #if BYTE_ORDER == LITTLE_ENDIAN
87 struct {
88 unsigned imm: 16;
89 unsigned rt: 5;
90 unsigned rs: 5;
91 unsigned op: 6;
92 } IType;
93
94 struct {
95 unsigned target: 26;
96 unsigned op: 6;
97 } JType;
98
99 struct {
100 unsigned func: 6;
101 unsigned shamt: 5;
102 unsigned rd: 5;
103 unsigned rt: 5;
104 unsigned rs: 5;
105 unsigned op: 6;
106 } RType;
107
108 struct {
109 unsigned func: 6;
110 unsigned fd: 5;
111 unsigned fs: 5;
112 unsigned ft: 5;
113 unsigned fmt: 4;
114 unsigned : 1; /* always '1' */
115 unsigned op: 6; /* always '0x11' */
116 } FRType;
117 #endif
118 } InstFmt;
119
120 /* instruction field decoding macros */
121 #define MIPS_INST_OPCODE(val) (val >> 26)
122 #define MIPS_INST_RS(val) ((val & 0x03e00000) >> 21)
123 #define MIPS_INST_RT(val) ((val & 0x001f0000) >> 16)
124 #define MIPS_INST_IMM(val) ((val & 0x0000ffff))
125
126 #define MIPS_INST_RD(val) ((val & 0x0000f800) >> 11)
127 #define MIPS_INST_SA(val) ((val & 0x000007c0) >> 6)
128 #define MIPS_INST_FUNC(val) (val & 0x0000003f)
129
130 #define MIPS_INST_INDEX(val) (val & 0x03ffffff)
131
132 /*
133 * the mips opcode and function table use a 3bit row and 3bit col
134 * number we define the following macro for easy transcribing
135 */
136
137 #define MIPS_OPCODE(r, c) (((r & 0x07) << 3) | (c & 0x07))
138
139
140 /*
141 * Values for the 'op' field.
142 */
143 #define OP_SPECIAL 000
144 #define OP_BCOND 001
145 #define OP_J 002
146 #define OP_JAL 003
147 #define OP_BEQ 004
148 #define OP_BNE 005
149 #define OP_BLEZ 006
150 #define OP_BGTZ 007
151
152 #define OP_REGIMM OP_BCOND
153
154 #define OP_ADDI 010
155 #define OP_ADDIU 011
156 #define OP_SLTI 012
157 #define OP_SLTIU 013
158 #define OP_ANDI 014
159 #define OP_ORI 015
160 #define OP_XORI 016
161 #define OP_LUI 017
162
163 #define OP_COP0 020
164 #define OP_COP1 021
165 #define OP_COP2 022
166 #define OP_COP3 023
167 #define OP_BEQL 024
168 #define OP_BNEL 025
169 #define OP_BLEZL 026
170 #define OP_BGTZL 027
171
172 #define OP_COP1X OP_COP3
173
174 #define OP_DADDI 030
175 #define OP_DADDIU 031
176 #define OP_LDL 032
177 #define OP_LDR 033
178
179 #define OP_SPECIAL2 034
180 #define OP_JALX 035
181
182 #define OP_SPECIAL3 037
183
184 #define OP_LB 040
185 #define OP_LH 041
186 #define OP_LWL 042
187 #define OP_LW 043
188 #define OP_LBU 044
189 #define OP_LHU 045
190 #define OP_LWR 046
191 #define OP_LWU 047
192
193 #define OP_SB 050
194 #define OP_SH 051
195 #define OP_SWL 052
196 #define OP_SW 053
197 #define OP_SDL 054
198 #define OP_SDR 055
199 #define OP_SWR 056
200 #define OP_CACHE 057
201
202 #define OP_LL 060
203 #define OP_LWC1 061
204 #define OP_LWC2 062
205 #define OP_LWC3 063
206 #define OP_LLD 064
207 #define OP_LDC1 065
208 #define OP_LDC2 066
209 #define OP_LD 067
210
211 #define OP_PREF OP_LWC3
212
213 #define OP_SC 070
214 #define OP_SWC1 071
215 #define OP_SWC2 072
216 #define OP_SWC3 073
217 #define OP_SCD 074
218 #define OP_SDC1 075
219 #define OP_SDC2 076
220 #define OP_SD 077
221
222 /*
223 * Values for the 'func' field when 'op' == OP_SPECIAL.
224 */
225 #define OP_SLL 000
226 #define OP_MOVCI 001
227 #define OP_SRL 002
228 #define OP_SRA 003
229 #define OP_SLLV 004
230 #define OP_SRLV 006
231 #define OP_SRAV 007
232
233 #define OP_F_SLL OP_SLL
234 #define OP_F_MOVCI OP_MOVCI
235 #define OP_F_SRL OP_SRL
236 #define OP_F_SRA OP_SRA
237 #define OP_F_SLLV OP_SLLV
238 #define OP_F_SRLV OP_SRLV
239 #define OP_F_SRAV OP_SRAV
240
241 #define OP_JR 010
242 #define OP_JALR 011
243 #define OP_MOVZ 012
244 #define OP_MOVN 013
245 #define OP_SYSCALL 014
246 #define OP_BREAK 015
247 #define OP_SYNC 017
248
249 #define OP_F_JR OP_JR
250 #define OP_F_JALR OP_JALR
251 #define OP_F_MOVZ OP_MOVZ
252 #define OP_F_MOVN OP_MOVN
253 #define OP_F_SYSCALL OP_SYSCALL
254 #define OP_F_BREAK OP_BREAK
255 #define OP_F_SYNC OP_SYNC
256
257 #define OP_MFHI 020
258 #define OP_MTHI 021
259 #define OP_MFLO 022
260 #define OP_MTLO 023
261 #define OP_DSLLV 024
262 #define OP_DSRLV 026
263 #define OP_DSRAV 027
264
265 #define OP_F_MFHI OP_MFHI
266 #define OP_F_MTHI OP_MTHI
267 #define OP_F_MFLO OP_MFLO
268 #define OP_F_MTLO OP_MTLO
269 #define OP_F_DSLLV OP_DSLLV
270 #define OP_F_DSRLV OP_DSRLV
271 #define OP_F_DSRAV OP_DSRAV
272
273 #define OP_MULT 030
274 #define OP_MULTU 031
275 #define OP_DIV 032
276 #define OP_DIVU 033
277 #define OP_DMULT 034
278 #define OP_DMULTU 035
279 #define OP_DDIV 036
280 #define OP_DDIVU 037
281
282 #define OP_F_MULT OP_MULT
283 #define OP_F_MULTU OP_MULTU
284 #define OP_F_DIV OP_DIV
285 #define OP_F_DIVU OP_DIVU
286 #define OP_F_DMULT OP_DMULT
287 #define OP_F_DMULTU OP_DMULTU
288 #define OP_F_DDIV OP_DDIV
289 #define OP_F_DDIVU OP_DDIVU
290
291 #define OP_ADD 040
292 #define OP_ADDU 041
293 #define OP_SUB 042
294 #define OP_SUBU 043
295 #define OP_AND 044
296 #define OP_OR 045
297 #define OP_XOR 046
298 #define OP_NOR 047
299
300 #define OP_F_ADD OP_ADD
301 #define OP_F_ADDU OP_ADDU
302 #define OP_F_SUB OP_SUB
303 #define OP_F_SUBU OP_SUBU
304 #define OP_F_AND OP_AND
305 #define OP_F_OR OP_OR
306 #define OP_F_XOR OP_XOR
307 #define OP_F_NOR OP_NOR
308
309 #define OP_SLT 052
310 #define OP_SLTU 053
311 #define OP_DADD 054
312 #define OP_DADDU 055
313 #define OP_DSUB 056
314 #define OP_DSUBU 057
315
316 #define OP_F_SLT OP_SLT
317 #define OP_F_SLTU OP_SLTU
318 #define OP_F_DADD OP_DADD
319 #define OP_F_DADDU OP_DADDU
320 #define OP_F_DSUB OP_DSUB
321 #define OP_F_DSUBU OP_DSUBU
322
323 #define OP_TGE 060
324 #define OP_TGEU 061
325 #define OP_TLT 062
326 #define OP_TLTU 063
327 #define OP_TEQ 064
328 #define OP_TNE 066
329
330 #define OP_F_TGE OP_TGE
331 #define OP_F_TGEU OP_TGEU
332 #define OP_F_TLT OP_TLT
333 #define OP_F_TLTU OP_TLTU
334 #define OP_F_TEQ OP_TEQ
335 #define OP_F_TNE OP_TNE
336
337 #define OP_DSLL 070
338 #define OP_DSRL 072
339 #define OP_DSRA 073
340 #define OP_DSLL32 074
341 #define OP_DSRL32 076
342 #define OP_DSRA32 077
343
344 #define OP_F_DSLL OP_DSLL
345 #define OP_F_DSRL OP_DSRL
346 #define OP_F_DSRA OP_DSRA
347 #define OP_F_DSLL32 OP_DSLL32
348 #define OP_F_DSRL32 OP_DSRL32
349 #define OP_F_DSRA32 OP_DSRA32
350
351 /*
352 * The REGIMM - register immediate instructions are further
353 * decoded using this table that has 2bit row numbers, hence
354 * a need for a new helper macro.
355 */
356
357 #define MIPS_ROP(r, c) ((r & 0x03) << 3) | (c & 0x07)
358
359 /*
360 * Values for the 'func' field when 'op' == OP_BCOND.
361 */
362 #define OP_BLTZ 000
363 #define OP_BGEZ 001
364 #define OP_BLTZL 002
365 #define OP_BGEZL 003
366
367 #define OP_R_BLTZ OP_BLTZ
368 #define OP_R_BGEZ OP_BGEZ
369 #define OP_R_BLTZL OP_BLTZL
370 #define OP_R_BGEZL OP_BGEZL
371
372 #define OP_TGEI 010
373 #define OP_TGEIU 011
374 #define OP_TLTI 012
375 #define OP_TLTIU 013
376 #define OP_TEQI 014
377 #define OP_TNEI 016
378
379 #define OP_R_TGEI OP_TGEI
380 #define OP_R_TGEIU OP_TGEIU
381 #define OP_R_TLTI OP_TLTI
382 #define OP_R_TLTIU OP_TLTIU
383 #define OP_R_TEQI OP_TEQI
384 #define OP_R_TNEI OP_TNEI
385
386 #define OP_BLTZAL 020
387 #define OP_BGEZAL 021
388 #define OP_BLTZALL 022
389 #define OP_BGEZALL 023
390
391 #define OP_R_BLTZAL OP_BLTZAL
392 #define OP_R_BGEZAL OP_BGEZAL
393 #define OP_R_BLTZALL OP_BLTZALL
394 #define OP_R_BGEZALL OP_BGEZALL
395
396 /*
397 * Values for the 'func' field when 'op' == OP_SPECIAL3.
398 */
399 #define OP_RDHWR 073
400
401 /*
402 * Values for the 'rs' field when 'op' == OP_COPz.
403 */
404 #define OP_MF 000
405 #define OP_DMF 001
406 #define OP_MT 004
407 #define OP_DMT 005
408 #define OP_BCx 010
409 #define OP_BCy 014
410 #define OP_CF 002
411 #define OP_CT 006
412
413 /*
414 * Values for the 'rt' field when 'op' == OP_COPz.
415 */
416 #define COPz_BC_TF_MASK 0x01
417 #define COPz_BC_TRUE 0x01
418 #define COPz_BC_FALSE 0x00
419 #define COPz_BCL_TF_MASK 0x02
420 #define COPz_BCL_TRUE 0x02
421 #define COPz_BCL_FALSE 0x00
422
423 #endif /* !_MACHINE_MIPS_OPCODE_H_ */
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