1/* $OpenBSD: mips_opcode.h,v 1.9 2017/04/20 15:42:26 visa 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 * 3. 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 */
36
37#ifndef _MIPS64_MIPS_OPCODE_H_
38#define _MIPS64_MIPS_OPCODE_H_
39
40/*
41 * Define the instruction formats and opcode values for the
42 * MIPS instruction set.
43 */
44
45/*
46 * Define the instruction formats.
47 */
48typedef union {
49 unsigned word;
50
51#if BYTE_ORDER == BIG_ENDIAN
52 struct {
53 unsigned op: 6;
54 unsigned rs: 5;
55 unsigned rt: 5;
56 unsigned imm: 16;
57 } IType;
58
59 struct {
60 unsigned op: 6;
61 unsigned target: 26;
62 } JType;
63
64 struct {
65 unsigned op: 6;
66 unsigned rs: 5;
67 unsigned rt: 5;
68 unsigned rd: 5;
69 unsigned shamt: 5;
70 unsigned func: 6;
71 } RType;
72
73 struct {
74 unsigned op: 6; /* COP1 */
75 unsigned : 1; /* always '1' */
76 unsigned fmt: 4;
77 unsigned ft: 5;
78 unsigned fs: 5;
79 unsigned fd: 5;
80 unsigned func: 6;
81 } FRType;
82
83 struct {
84 unsigned op: 6; /* COP1X */
85 unsigned fr: 5;
86 unsigned ft: 5;
87 unsigned fs: 5;
88 unsigned fd: 5;
89 unsigned op4: 3;
90 unsigned fmt3: 3;
91 } FQType;
92#endif
93#if BYTE_ORDER == LITTLE_ENDIAN
94 struct {
95 unsigned imm: 16;
96 unsigned rt: 5;
97 unsigned rs: 5;
98 unsigned op: 6;
99 } IType;
100
101 struct {
102 unsigned target: 26;
103 unsigned op: 6;
104 } JType;
105
106 struct {
107 unsigned func: 6;
108 unsigned shamt: 5;
109 unsigned rd: 5;
110 unsigned rt: 5;
111 unsigned rs: 5;
112 unsigned op: 6;
113 } RType;
114
115 struct {
116 unsigned func: 6;
117 unsigned fd: 5;
118 unsigned fs: 5;
119 unsigned ft: 5;
120 unsigned fmt: 4;
121 unsigned : 1; /* always '1' */
122 unsigned op: 6; /* COP1 */
123 } FRType;
124
125 struct {
126 unsigned fmt3: 3;
127 unsigned op4: 3;
128 unsigned fd: 5;
129 unsigned fs: 5;
130 unsigned ft: 5;
131 unsigned fr: 5;
132 unsigned op: 6; /* COP1X */
133 } FQType;
134#endif
135} InstFmt;
136
137/*
138 * Values for the 'op' field.
139 */
140#define OP_SPECIAL 000
141#define OP_BCOND 001
142#define OP_J 002
143#define OP_JAL 003
144#define OP_BEQ 004
145#define OP_BNE 005
146#define OP_BLEZ 006
147#define OP_BGTZ 007
148
149#define OP_ADDI 010
150#define OP_ADDIU 011
151#define OP_SLTI 012
152#define OP_SLTIU 013
153#define OP_ANDI 014
154#define OP_ORI 015
155#define OP_XORI 016
156#define OP_LUI 017
157
158#define OP_COP0 020
159#define OP_COP1 021
160#define OP_COP2 022
161#define OP_COP3 023
162#define OP_COP1X 023
163#define OP_BEQL 024
164#define OP_BNEL 025
165#define OP_BLEZL 026
166#define OP_BGTZL 027
167
168#define OP_DADDI 030
169#define OP_DADDIU 031
170#define OP_LDL 032
171#define OP_LDR 033
172
173#define OP_SPECIAL3 037
174
175#define OP_LB 040
176#define OP_LH 041
177#define OP_LWL 042
178#define OP_LW 043
179#define OP_LBU 044
180#define OP_LHU 045
181#define OP_LWR 046
182#define OP_LWU 047
183
184#define OP_SB 050
185#define OP_SH 051
186#define OP_SWL 052
187#define OP_SW 053
188#define OP_SDL 054
189#define OP_SDR 055
190#define OP_SWR 056
191#define OP_CACHE 057
192
193#define OP_LL 060
194#define OP_LWC1 061
195#define OP_LWC2 062
196#define OP_LWC3 063
197#define OP_PREF 063
198#define OP_LLD 064
199#define OP_LDC1 065
200#define OP_LDC2 066
201#define OP_LD 067
202
203#define OP_SC 070
204#define OP_SWC1 071
205#define OP_SWC2 072
206#define OP_SWC3 073
207#define OP_SCD 074
208#define OP_SDC1 075
209#define OP_SDC2 076
210#define OP_SD 077
211
212/*
213 * Values for the 'func' field when 'op' == OP_SPECIAL.
214 */
215#define OP_SLL 000
216#define OP_MOVCI 001
217#define OP_SRL 002
218#define OP_SRA 003
219#define OP_SLLV 004
220#define OP_SRLV 006
221#define OP_SRAV 007
222
223#define OP_JR 010
224#define OP_JALR 011
225#define OP_MOVZ 012
226#define OP_MOVN 013
227#define OP_SYSCALL 014
228#define OP_BREAK 015
229#define OP_SYNC 017
230
231#define OP_MFHI 020
232#define OP_MTHI 021
233#define OP_MFLO 022
234#define OP_MTLO 023
235#define OP_DSLLV 024
236#define OP_DSRLV 026
237#define OP_DSRAV 027
238
239#define OP_MULT 030
240#define OP_MULTU 031
241#define OP_DIV 032
242#define OP_DIVU 033
243#define OP_DMULT 034
244#define OP_DMULTU 035
245#define OP_DDIV 036
246#define OP_DDIVU 037
247
248#define OP_ADD 040
249#define OP_ADDU 041
250#define OP_SUB 042
251#define OP_SUBU 043
252#define OP_AND 044
253#define OP_OR 045
254#define OP_XOR 046
255#define OP_NOR 047
256
257#define OP_SLT 052
258#define OP_SLTU 053
259#define OP_DADD 054
260#define OP_DADDU 055
261#define OP_DSUB 056
262#define OP_DSUBU 057
263
264#define OP_TGE 060
265#define OP_TGEU 061
266#define OP_TLT 062
267#define OP_TLTU 063
268#define OP_TEQ 064
269#define OP_TNE 066
270
271#define OP_DSLL 070
272#define OP_DSRL 072
273#define OP_DSRA 073
274#define OP_DSLL32 074
275#define OP_DSRL32 076
276#define OP_DSRA32 077
277
278/*
279 * Values for the 'rt' field when 'op' == OP_BCOND.
280 */
281#define OP_BLTZ 000
282#define OP_BGEZ 001
283#define OP_BLTZL 002
284#define OP_BGEZL 003
285
286#define OP_TGEI 010
287#define OP_TGEIU 011
288#define OP_TLTI 012
289#define OP_TLTIU 013
290#define OP_TEQI 014
291#define OP_TNEI 016
292
293#define OP_BLTZAL 020
294#define OP_BGEZAL 021
295#define OP_BLTZALL 022
296#define OP_BGEZALL 023
297
298/*
299 * Values for the 'rs' field when 'op' == OP_COPz.
300 */
301#define OP_MF 000
302#define OP_DMF 001
303#define OP_CF 002
304#define OP_MFH 003
305#define OP_MT 004
306#define OP_DMT 005
307#define OP_CT 006
308#define OP_MTH 007
309#define OP_BC 010
310#define OP_C0MISC 020 /* cop0 only */
311#define OP_TFP_C0MISC 030 /* cop0 only on R8000 */
312
313/*
314 * Values for the 'rt' field when 'op' == OP_COPz.
315 */
316#define COPz_BC_TF_MASK 0x01
317#define COPz_BC_TRUE 0x01
318#define COPz_BC_FALSE 0x00
319#define COPz_BCL_TF_MASK 0x02
320#define COPz_BCL_TRUE 0x02
321#define COPz_BCL_FALSE 0x00
322#define COPz_BC_CC_MASK 0x1c
323#define COPz_BC_CC_SHIFT 2
324
325/*
326 * Values for the 'func' field when 'op' == OP_COP1X.
327 */
328#define OP_LWXC1 000
329#define OP_LDXC1 001
330#define OP_SWXC1 010
331#define OP_SDXC1 011
332#define OP_PREFX 017
333
334/*
335 * Values for the 'op4' field when 'op' == OP_COP1X.
336 */
337#define OP_MADD 04
338#define OP_MSUB 05
339#define OP_NMADD 06
340#define OP_NMSUB 07
341
342/*
343 * Values for the 'func' field when 'op' == OP_SPECIAL3.
344 */
345#define OP_RDHWR 073
346
347#endif /* !_MIPS64_MIPS_OPCODE_H_ */