xref: /netbsd/sys/arch/mips/include/mips_opcode.h (revision aad01611)
1 /*	$NetBSD: mips_opcode.h,v 1.10 2003/08/07 16:28:28 agc 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  *	@(#)mips_opcode.h	8.1 (Berkeley) 6/10/93
35  */
36 
37 /*
38  * Define the instruction formats and opcode values for the
39  * MIPS instruction set.
40  */
41 
42 /*
43  * Define the instruction formats.
44  */
45 typedef union {
46 	unsigned word;
47 
48 #if BYTE_ORDER == LITTLE_ENDIAN
49 	struct {
50 		unsigned imm: 16;
51 		unsigned rt: 5;
52 		unsigned rs: 5;
53 		unsigned op: 6;
54 	} IType;
55 
56 	struct {
57 		unsigned target: 26;
58 		unsigned op: 6;
59 	} JType;
60 
61 	struct {
62 		unsigned func: 6;
63 		unsigned shamt: 5;
64 		unsigned rd: 5;
65 		unsigned rt: 5;
66 		unsigned rs: 5;
67 		unsigned op: 6;
68 	} RType;
69 
70 	struct {
71 		unsigned func: 6;
72 		unsigned fd: 5;
73 		unsigned fs: 5;
74 		unsigned ft: 5;
75 		unsigned fmt: 4;
76 		unsigned : 1;		/* always '1' */
77 		unsigned op: 6;		/* always '0x11' */
78 	} FRType;
79 #endif
80 #if BYTE_ORDER == BIG_ENDIAN
81 	struct {
82 		unsigned op: 6;
83 		unsigned rs: 5;
84 		unsigned rt: 5;
85 		unsigned imm: 16;
86 	} IType;
87 
88 	struct {
89 		unsigned op: 6;
90 		unsigned target: 26;
91 	} JType;
92 
93 	struct {
94 		unsigned op: 6;
95 		unsigned rs: 5;
96 		unsigned rt: 5;
97 		unsigned rd: 5;
98 		unsigned shamt: 5;
99 		unsigned func: 6;
100 	} RType;
101 
102 	struct {
103 		unsigned op: 6;		/* always '0x11' */
104 		unsigned : 1;		/* always '1' */
105 		unsigned fmt: 4;
106 		unsigned ft: 5;
107 		unsigned fs: 5;
108 		unsigned fd: 5;
109 		unsigned func: 6;
110 	} FRType;
111 #endif
112 } InstFmt;
113 
114 /*
115  * Values for the 'op' field.
116  */
117 #define OP_SPECIAL	000
118 #define OP_BCOND	001
119 #define OP_J		002
120 #define	OP_JAL		003
121 #define OP_BEQ		004
122 #define OP_BNE		005
123 #define OP_BLEZ		006
124 #define OP_BGTZ		007
125 #define OP_SYNC		017
126 
127 #define OP_ADDI		010
128 #define OP_ADDIU	011
129 #define OP_SLTI		012
130 #define OP_SLTIU	013
131 #define OP_ANDI		014
132 #define OP_ORI		015
133 #define OP_XORI		016
134 #define OP_LUI		017
135 
136 #define OP_COP0		020
137 #define OP_COP1		021
138 #define OP_COP2		022
139 #define OP_COP3		023
140 #define OP_BEQL		024		/* MIPS-II, for r4000 port */
141 #define OP_BNEL		025		/* MIPS-II, for r4000 port */
142 #define OP_BLEZL	026		/* MIPS-II, for r4000 port */
143 #define OP_BGTZL	027		/* MIPS-II, for r4000 port */
144 
145 #define OP_DADDI	030		/* MIPS-II, for r4000 port */
146 #define OP_DADDIU	031		/* MIPS-II, for r4000 port */
147 #define OP_LDL		032		/* MIPS-II, for r4000 port */
148 #define OP_LDR		033		/* MIPS-II, for r4000 port */
149 
150 #define OP_SPECIAL2	034		/* QED opcodes */
151 
152 #define OP_LB		040
153 #define OP_LH		041
154 #define OP_LWL		042
155 #define OP_LW		043
156 #define OP_LBU		044
157 #define OP_LHU		045
158 #define OP_LWR		046
159 #define OP_LHU		045
160 #define OP_LWR		046
161 #define OP_LWU		047		/* MIPS-II, for r4000 port */
162 
163 #define OP_SB		050
164 #define OP_SH		051
165 #define OP_SWL		052
166 #define OP_SW		053
167 #define OP_SDL		054		/* MIPS-II, for r4000 port */
168 #define OP_SDR		055		/* MIPS-II, for r4000 port */
169 #define OP_SWR		056
170 #define OP_CACHE	057		/* MIPS-II, for r4000 port */
171 
172 #define OP_LL		060
173 #define OP_LWC0		OP_LL	/* backwards source compatibility */
174 #define OP_LWC1		061
175 #define OP_LWC2		062
176 #define OP_LWC3		063
177 #define OP_LLD		064		/* MIPS-II, for r4000 port */
178 #define OP_LDC1		065
179 #define OP_LD		067		/* MIPS-II, for r4000 port */
180 
181 #define OP_SC		070
182 #define OP_SWC0		OP_SC	/* backwards source compatibility */
183 #define OP_SWC1		071
184 #define OP_SWC2		072
185 #define OP_SWC3		073
186 #define OP_SCD		074		/* MIPS-II, for r4000 port */
187 #define OP_SDC1		075
188 #define OP_SD		077		/* MIPS-II, for r4000 port */
189 
190 /*
191  * Values for the 'func' field when 'op' == OP_SPECIAL.
192  */
193 #define OP_SLL		000
194 #define OP_SRL		002
195 #define OP_SRA		003
196 #define OP_SLLV		004
197 #define OP_SRLV		006
198 #define OP_SRAV		007
199 
200 #define OP_JR		010
201 #define OP_JALR		011
202 #define OP_SYSCALL	014
203 #define OP_BREAK	015
204 #define OP_SYNC		017		/* MIPS-II, for r4000 port */
205 
206 #define OP_MFHI		020
207 #define OP_MTHI		021
208 #define OP_MFLO		022
209 #define OP_MTLO		023
210 #define OP_DSLLV	024		/* MIPS-II, for r4000 port */
211 #define OP_DSRLV	026		/* MIPS-II, for r4000 port */
212 #define OP_DSRAV	027		/* MIPS-II, for r4000 port */
213 
214 #define OP_MULT		030
215 #define OP_MULTU	031
216 #define OP_DIV		032
217 #define OP_DIVU		033
218 #define OP_DMULT	034		/* MIPS-II, for r4000 port */
219 #define OP_DMULTU	035		/* MIPS-II, for r4000 port */
220 #define OP_DDIV		036		/* MIPS-II, for r4000 port */
221 #define OP_DDIVU	037		/* MIPS-II, for r4000 port */
222 
223 #define OP_ADD		040
224 #define OP_ADDU		041
225 #define OP_SUB		042
226 #define OP_SUBU		043
227 #define OP_AND		044
228 #define OP_OR		045
229 #define OP_XOR		046
230 #define OP_NOR		047
231 
232 #define OP_SLT		052
233 #define OP_SLTU		053
234 #define OP_DADD		054		/* MIPS-II, for r4000 port */
235 #define OP_DADDU	055		/* MIPS-II, for r4000 port */
236 #define OP_DSUB		056		/* MIPS-II, for r4000 port */
237 #define OP_DSUBU	057		/* MIPS-II, for r4000 port */
238 
239 #define OP_TGE		060		/* MIPS-II, for r4000 port */
240 #define OP_TGEU		061		/* MIPS-II, for r4000 port */
241 #define OP_TLT		062		/* MIPS-II, for r4000 port */
242 #define OP_TLTU		063		/* MIPS-II, for r4000 port */
243 #define OP_TEQ		064		/* MIPS-II, for r4000 port */
244 #define OP_TNE		066		/* MIPS-II, for r4000 port */
245 
246 #define OP_DSLL		070		/* MIPS-II, for r4000 port */
247 #define OP_DSRL		072		/* MIPS-II, for r4000 port */
248 #define OP_DSRA		073		/* MIPS-II, for r4000 port */
249 #define OP_DSLL32	074		/* MIPS-II, for r4000 port */
250 #define OP_DSRL32	076		/* MIPS-II, for r4000 port */
251 #define OP_DSRA32	077		/* MIPS-II, for r4000 port */
252 
253 /*
254  * Values for the 'func' field when 'op' == OP_SPECIAL2.
255  */
256 #define OP_MAD		000		/* QED */
257 #define OP_MADU		001		/* QED */
258 #define OP_MUL		002		/* QED */
259 
260 /*
261  * Values for the 'func' field when 'op' == OP_BCOND.
262  */
263 #define OP_BLTZ		000
264 #define OP_BGEZ		001
265 #define OP_BLTZL	002		/* MIPS-II, for r4000 port */
266 #define OP_BGEZL	003		/* MIPS-II, for r4000 port */
267 
268 #define OP_TGEI		010		/* MIPS-II, for r4000 port */
269 #define OP_TGEIU	011		/* MIPS-II, for r4000 port */
270 #define OP_TLTI		012		/* MIPS-II, for r4000 port */
271 #define OP_TLTIU	013		/* MIPS-II, for r4000 port */
272 #define OP_TEQI		014		/* MIPS-II, for r4000 port */
273 #define OP_TNEI		016		/* MIPS-II, for r4000 port */
274 
275 #define OP_BLTZAL	020		/* MIPS-II, for r4000 port */
276 #define OP_BGEZAL	021
277 #define OP_BLTZALL	022
278 #define OP_BGEZALL	023
279 
280 /*
281  * Values for the 'rs' field when 'op' == OP_COPz.
282  */
283 #define OP_MF		000
284 #define OP_DMF		001		/* MIPS-II, for r4000 port */
285 #define OP_MT		004
286 #define OP_DMT		005		/* MIPS-II, for r4000 port */
287 #define OP_BCx		010
288 #define OP_BCy		014
289 #define OP_CF		002
290 #define OP_CT		006
291 
292 /*
293  * Values for the 'rt' field when 'op' == OP_COPz.
294  */
295 #define COPz_BC_TF_MASK	0x01
296 #define COPz_BC_TRUE	0x01
297 #define COPz_BC_FALSE	0x00
298 #define COPz_BCL_TF_MASK	0x02		/* MIPS-II, for r4000 port */
299 #define COPz_BCL_TRUE	0x02		/* MIPS-II, for r4000 port */
300 #define COPz_BCL_FALSE	0x00		/* MIPS-II, for r4000 port */
301