1 /* $OpenBSD: mips_opcode.h,v 1.2 1999/01/27 04:46:05 imp Exp $ */
2
3 /*-
4 * SPDX-License-Identifier: BSD-3-Clause
5 *
6 * Copyright (c) 1992, 1993
7 * The Regents of the University of California. All rights reserved.
8 *
9 * This code is derived from software contributed to Berkeley by
10 * Ralph Campbell.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 * from: @(#)mips_opcode.h 8.1 (Berkeley) 6/10/93
37 * JNPR: mips_opcode.h,v 1.1 2006/08/07 05:38:57 katta
38 * $FreeBSD$
39 */
40
41 #ifndef _MACHINE_MIPS_OPCODE_H_
42 #define _MACHINE_MIPS_OPCODE_H_
43
44 /*
45 * Define the instruction formats and opcode values for the
46 * MIPS instruction set.
47 */
48 #include <machine/endian.h>
49
50 /*
51 * Define the instruction formats.
52 */
53 typedef union {
54 unsigned word;
55
56 #if BYTE_ORDER == BIG_ENDIAN
57 struct {
58 unsigned op: 6;
59 unsigned rs: 5;
60 unsigned rt: 5;
61 unsigned imm: 16;
62 } IType;
63
64 struct {
65 unsigned op: 6;
66 unsigned target: 26;
67 } JType;
68
69 struct {
70 unsigned op: 6;
71 unsigned rs: 5;
72 unsigned rt: 5;
73 unsigned rd: 5;
74 unsigned shamt: 5;
75 unsigned func: 6;
76 } RType;
77
78 struct {
79 unsigned op: 6; /* always '0x11' */
80 unsigned : 1; /* always '1' */
81 unsigned fmt: 4;
82 unsigned ft: 5;
83 unsigned fs: 5;
84 unsigned fd: 5;
85 unsigned func: 6;
86 } FRType;
87 #endif
88 #if BYTE_ORDER == LITTLE_ENDIAN
89 struct {
90 unsigned imm: 16;
91 unsigned rt: 5;
92 unsigned rs: 5;
93 unsigned op: 6;
94 } IType;
95
96 struct {
97 unsigned target: 26;
98 unsigned op: 6;
99 } JType;
100
101 struct {
102 unsigned func: 6;
103 unsigned shamt: 5;
104 unsigned rd: 5;
105 unsigned rt: 5;
106 unsigned rs: 5;
107 unsigned op: 6;
108 } RType;
109
110 struct {
111 unsigned func: 6;
112 unsigned fd: 5;
113 unsigned fs: 5;
114 unsigned ft: 5;
115 unsigned fmt: 4;
116 unsigned : 1; /* always '1' */
117 unsigned op: 6; /* always '0x11' */
118 } FRType;
119 #endif
120 } InstFmt;
121
122 /* instruction field decoding macros */
123 #define MIPS_INST_OPCODE(val) (val >> 26)
124 #define MIPS_INST_RS(val) ((val & 0x03e00000) >> 21)
125 #define MIPS_INST_RT(val) ((val & 0x001f0000) >> 16)
126 #define MIPS_INST_IMM(val) ((val & 0x0000ffff))
127
128 #define MIPS_INST_RD(val) ((val & 0x0000f800) >> 11)
129 #define MIPS_INST_SA(val) ((val & 0x000007c0) >> 6)
130 #define MIPS_INST_FUNC(val) (val & 0x0000003f)
131
132 #define MIPS_INST_INDEX(val) (val & 0x03ffffff)
133
134 /*
135 * the mips opcode and function table use a 3bit row and 3bit col
136 * number we define the following macro for easy transcribing
137 */
138
139 #define MIPS_OPCODE(r, c) (((r & 0x07) << 3) | (c & 0x07))
140
141
142 /*
143 * Values for the 'op' field.
144 */
145 #define OP_SPECIAL 000
146 #define OP_BCOND 001
147 #define OP_J 002
148 #define OP_JAL 003
149 #define OP_BEQ 004
150 #define OP_BNE 005
151 #define OP_BLEZ 006
152 #define OP_BGTZ 007
153
154 #define OP_REGIMM OP_BCOND
155
156 #define OP_ADDI 010
157 #define OP_ADDIU 011
158 #define OP_SLTI 012
159 #define OP_SLTIU 013
160 #define OP_ANDI 014
161 #define OP_ORI 015
162 #define OP_XORI 016
163 #define OP_LUI 017
164
165 #define OP_COP0 020
166 #define OP_COP1 021
167 #define OP_COP2 022
168 #define OP_COP3 023
169 #define OP_BEQL 024
170 #define OP_BNEL 025
171 #define OP_BLEZL 026
172 #define OP_BGTZL 027
173
174 #define OP_COP1X OP_COP3
175
176 #define OP_DADDI 030
177 #define OP_DADDIU 031
178 #define OP_LDL 032
179 #define OP_LDR 033
180
181 #define OP_SPECIAL2 034
182 #define OP_JALX 035
183
184 #define OP_SPECIAL3 037
185
186 #define OP_LB 040
187 #define OP_LH 041
188 #define OP_LWL 042
189 #define OP_LW 043
190 #define OP_LBU 044
191 #define OP_LHU 045
192 #define OP_LWR 046
193 #define OP_LWU 047
194
195 #define OP_SB 050
196 #define OP_SH 051
197 #define OP_SWL 052
198 #define OP_SW 053
199 #define OP_SDL 054
200 #define OP_SDR 055
201 #define OP_SWR 056
202 #define OP_CACHE 057
203
204 #define OP_LL 060
205 #define OP_LWC1 061
206 #define OP_LWC2 062
207 #define OP_LWC3 063
208 #define OP_LLD 064
209 #define OP_LDC1 065
210 #define OP_LDC2 066
211 #define OP_LD 067
212
213 #define OP_PREF OP_LWC3
214
215 #define OP_SC 070
216 #define OP_SWC1 071
217 #define OP_SWC2 072
218 #define OP_SWC3 073
219 #define OP_SCD 074
220 #define OP_SDC1 075
221 #define OP_SDC2 076
222 #define OP_SD 077
223
224 /*
225 * Values for the 'func' field when 'op' == OP_SPECIAL.
226 */
227 #define OP_SLL 000
228 #define OP_MOVCI 001
229 #define OP_SRL 002
230 #define OP_SRA 003
231 #define OP_SLLV 004
232 #define OP_SRLV 006
233 #define OP_SRAV 007
234
235 #define OP_F_SLL OP_SLL
236 #define OP_F_MOVCI OP_MOVCI
237 #define OP_F_SRL OP_SRL
238 #define OP_F_SRA OP_SRA
239 #define OP_F_SLLV OP_SLLV
240 #define OP_F_SRLV OP_SRLV
241 #define OP_F_SRAV OP_SRAV
242
243 #define OP_JR 010
244 #define OP_JALR 011
245 #define OP_MOVZ 012
246 #define OP_MOVN 013
247 #define OP_SYSCALL 014
248 #define OP_BREAK 015
249 #define OP_SYNC 017
250
251 #define OP_F_JR OP_JR
252 #define OP_F_JALR OP_JALR
253 #define OP_F_MOVZ OP_MOVZ
254 #define OP_F_MOVN OP_MOVN
255 #define OP_F_SYSCALL OP_SYSCALL
256 #define OP_F_BREAK OP_BREAK
257 #define OP_F_SYNC OP_SYNC
258
259 #define OP_MFHI 020
260 #define OP_MTHI 021
261 #define OP_MFLO 022
262 #define OP_MTLO 023
263 #define OP_DSLLV 024
264 #define OP_DSRLV 026
265 #define OP_DSRAV 027
266
267 #define OP_F_MFHI OP_MFHI
268 #define OP_F_MTHI OP_MTHI
269 #define OP_F_MFLO OP_MFLO
270 #define OP_F_MTLO OP_MTLO
271 #define OP_F_DSLLV OP_DSLLV
272 #define OP_F_DSRLV OP_DSRLV
273 #define OP_F_DSRAV OP_DSRAV
274
275 #define OP_MULT 030
276 #define OP_MULTU 031
277 #define OP_DIV 032
278 #define OP_DIVU 033
279 #define OP_DMULT 034
280 #define OP_DMULTU 035
281 #define OP_DDIV 036
282 #define OP_DDIVU 037
283
284 #define OP_F_MULT OP_MULT
285 #define OP_F_MULTU OP_MULTU
286 #define OP_F_DIV OP_DIV
287 #define OP_F_DIVU OP_DIVU
288 #define OP_F_DMULT OP_DMULT
289 #define OP_F_DMULTU OP_DMULTU
290 #define OP_F_DDIV OP_DDIV
291 #define OP_F_DDIVU OP_DDIVU
292
293 #define OP_ADD 040
294 #define OP_ADDU 041
295 #define OP_SUB 042
296 #define OP_SUBU 043
297 #define OP_AND 044
298 #define OP_OR 045
299 #define OP_XOR 046
300 #define OP_NOR 047
301
302 #define OP_F_ADD OP_ADD
303 #define OP_F_ADDU OP_ADDU
304 #define OP_F_SUB OP_SUB
305 #define OP_F_SUBU OP_SUBU
306 #define OP_F_AND OP_AND
307 #define OP_F_OR OP_OR
308 #define OP_F_XOR OP_XOR
309 #define OP_F_NOR OP_NOR
310
311 #define OP_SLT 052
312 #define OP_SLTU 053
313 #define OP_DADD 054
314 #define OP_DADDU 055
315 #define OP_DSUB 056
316 #define OP_DSUBU 057
317
318 #define OP_F_SLT OP_SLT
319 #define OP_F_SLTU OP_SLTU
320 #define OP_F_DADD OP_DADD
321 #define OP_F_DADDU OP_DADDU
322 #define OP_F_DSUB OP_DSUB
323 #define OP_F_DSUBU OP_DSUBU
324
325 #define OP_TGE 060
326 #define OP_TGEU 061
327 #define OP_TLT 062
328 #define OP_TLTU 063
329 #define OP_TEQ 064
330 #define OP_TNE 066
331
332 #define OP_F_TGE OP_TGE
333 #define OP_F_TGEU OP_TGEU
334 #define OP_F_TLT OP_TLT
335 #define OP_F_TLTU OP_TLTU
336 #define OP_F_TEQ OP_TEQ
337 #define OP_F_TNE OP_TNE
338
339 #define OP_DSLL 070
340 #define OP_DSRL 072
341 #define OP_DSRA 073
342 #define OP_DSLL32 074
343 #define OP_DSRL32 076
344 #define OP_DSRA32 077
345
346 #define OP_F_DSLL OP_DSLL
347 #define OP_F_DSRL OP_DSRL
348 #define OP_F_DSRA OP_DSRA
349 #define OP_F_DSLL32 OP_DSLL32
350 #define OP_F_DSRL32 OP_DSRL32
351 #define OP_F_DSRA32 OP_DSRA32
352
353 /*
354 * The REGIMM - register immediate instructions are further
355 * decoded using this table that has 2bit row numbers, hence
356 * a need for a new helper macro.
357 */
358
359 #define MIPS_ROP(r, c) ((r & 0x03) << 3) | (c & 0x07)
360
361 /*
362 * Values for the 'func' field when 'op' == OP_BCOND.
363 */
364 #define OP_BLTZ 000
365 #define OP_BGEZ 001
366 #define OP_BLTZL 002
367 #define OP_BGEZL 003
368
369 #define OP_R_BLTZ OP_BLTZ
370 #define OP_R_BGEZ OP_BGEZ
371 #define OP_R_BLTZL OP_BLTZL
372 #define OP_R_BGEZL OP_BGEZL
373
374 #define OP_TGEI 010
375 #define OP_TGEIU 011
376 #define OP_TLTI 012
377 #define OP_TLTIU 013
378 #define OP_TEQI 014
379 #define OP_TNEI 016
380
381 #define OP_R_TGEI OP_TGEI
382 #define OP_R_TGEIU OP_TGEIU
383 #define OP_R_TLTI OP_TLTI
384 #define OP_R_TLTIU OP_TLTIU
385 #define OP_R_TEQI OP_TEQI
386 #define OP_R_TNEI OP_TNEI
387
388 #define OP_BLTZAL 020
389 #define OP_BGEZAL 021
390 #define OP_BLTZALL 022
391 #define OP_BGEZALL 023
392
393 #define OP_R_BLTZAL OP_BLTZAL
394 #define OP_R_BGEZAL OP_BGEZAL
395 #define OP_R_BLTZALL OP_BLTZALL
396 #define OP_R_BGEZALL OP_BGEZALL
397
398 /*
399 * Values for the 'func' field when 'op' == OP_SPECIAL3.
400 */
401 #define OP_RDHWR 073
402
403 /*
404 * Values for the 'rs' field when 'op' == OP_COPz.
405 */
406 #define OP_MF 000
407 #define OP_DMF 001
408 #define OP_MT 004
409 #define OP_DMT 005
410 #define OP_BCx 010
411 #define OP_BCy 014
412 #define OP_CF 002
413 #define OP_CT 006
414
415 /*
416 * Values for the 'rt' field when 'op' == OP_COPz.
417 */
418 #define COPz_BC_TF_MASK 0x01
419 #define COPz_BC_TRUE 0x01
420 #define COPz_BC_FALSE 0x00
421 #define COPz_BCL_TF_MASK 0x02
422 #define COPz_BCL_TRUE 0x02
423 #define COPz_BCL_FALSE 0x00
424
425 #endif /* !_MACHINE_MIPS_OPCODE_H_ */
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