mips_opcode.h revision 1.7
1 /* $NetBSD: mips_opcode.h,v 1.7 2000/07/11 06:27:58 jeffs 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. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * @(#)mips_opcode.h 8.1 (Berkeley) 6/10/93 39 */ 40 41 /* 42 * Define the instruction formats and opcode values for the 43 * MIPS instruction set. 44 */ 45 46 /* 47 * Define the instruction formats. 48 */ 49 typedef union { 50 unsigned word; 51 52 #if BYTE_ORDER == LITTLE_ENDIAN 53 struct { 54 unsigned imm: 16; 55 unsigned rt: 5; 56 unsigned rs: 5; 57 unsigned op: 6; 58 } IType; 59 60 struct { 61 unsigned target: 26; 62 unsigned op: 6; 63 } JType; 64 65 struct { 66 unsigned func: 6; 67 unsigned shamt: 5; 68 unsigned rd: 5; 69 unsigned rt: 5; 70 unsigned rs: 5; 71 unsigned op: 6; 72 } RType; 73 74 struct { 75 unsigned func: 6; 76 unsigned fd: 5; 77 unsigned fs: 5; 78 unsigned ft: 5; 79 unsigned fmt: 4; 80 unsigned : 1; /* always '1' */ 81 unsigned op: 6; /* always '0x11' */ 82 } FRType; 83 #endif 84 #if BYTE_ORDER == BIG_ENDIAN 85 struct { 86 unsigned op: 6; 87 unsigned rs: 5; 88 unsigned rt: 5; 89 unsigned imm: 16; 90 } IType; 91 92 struct { 93 unsigned op: 6; 94 unsigned target: 26; 95 } JType; 96 97 struct { 98 unsigned op: 6; 99 unsigned rs: 5; 100 unsigned rt: 5; 101 unsigned rd: 5; 102 unsigned shamt: 5; 103 unsigned func: 6; 104 } RType; 105 106 struct { 107 unsigned op: 6; /* always '0x11' */ 108 unsigned : 1; /* always '1' */ 109 unsigned fmt: 4; 110 unsigned ft: 5; 111 unsigned fs: 5; 112 unsigned fd: 5; 113 unsigned func: 6; 114 } FRType; 115 #endif 116 } InstFmt; 117 118 /* 119 * Values for the 'op' field. 120 */ 121 #define OP_SPECIAL 000 122 #define OP_BCOND 001 123 #define OP_J 002 124 #define OP_JAL 003 125 #define OP_BEQ 004 126 #define OP_BNE 005 127 #define OP_BLEZ 006 128 #define OP_BGTZ 007 129 130 #define OP_ADDI 010 131 #define OP_ADDIU 011 132 #define OP_SLTI 012 133 #define OP_SLTIU 013 134 #define OP_ANDI 014 135 #define OP_ORI 015 136 #define OP_XORI 016 137 #define OP_LUI 017 138 139 #define OP_COP0 020 140 #define OP_COP1 021 141 #define OP_COP2 022 142 #define OP_COP3 023 143 #define OP_BEQL 024 /* MIPS-II, for r4000 port */ 144 #define OP_BNEL 025 /* MIPS-II, for r4000 port */ 145 #define OP_BLEZL 026 /* MIPS-II, for r4000 port */ 146 #define OP_BGTZL 027 /* MIPS-II, for r4000 port */ 147 148 #define OP_DADDI 030 /* MIPS-II, for r4000 port */ 149 #define OP_DADDIU 031 /* MIPS-II, for r4000 port */ 150 #define OP_LDL 032 /* MIPS-II, for r4000 port */ 151 #define OP_LDR 033 /* MIPS-II, for r4000 port */ 152 153 #define OP_SPECIAL2 034 /* QED opcodes */ 154 155 #define OP_LB 040 156 #define OP_LH 041 157 #define OP_LWL 042 158 #define OP_LW 043 159 #define OP_LBU 044 160 #define OP_LHU 045 161 #define OP_LWR 046 162 #define OP_LHU 045 163 #define OP_LWR 046 164 #define OP_LWU 047 /* MIPS-II, for r4000 port */ 165 166 #define OP_SB 050 167 #define OP_SH 051 168 #define OP_SWL 052 169 #define OP_SW 053 170 #define OP_SDL 054 /* MIPS-II, for r4000 port */ 171 #define OP_SDR 055 /* MIPS-II, for r4000 port */ 172 #define OP_SWR 056 173 #define OP_CACHE 057 /* MIPS-II, for r4000 port */ 174 175 #define OP_LL 060 176 #define OP_LWC0 OP_LL /* backwards source compatibility */ 177 #define OP_LWC1 061 178 #define OP_LWC2 062 179 #define OP_LWC3 063 180 #define OP_LLD 064 /* MIPS-II, for r4000 port */ 181 #define OP_LD 067 /* MIPS-II, for r4000 port */ 182 183 #define OP_SC 070 184 #define OP_SWC0 OP_SC /* backwards source compatibility */ 185 #define OP_SWC1 071 186 #define OP_SWC2 072 187 #define OP_SWC3 073 188 #define OP_SCD 074 /* MIPS-II, for r4000 port */ 189 #define OP_SD 077 /* MIPS-II, for r4000 port */ 190 191 /* 192 * Values for the 'func' field when 'op' == OP_SPECIAL. 193 */ 194 #define OP_SLL 000 195 #define OP_SRL 002 196 #define OP_SRA 003 197 #define OP_SLLV 004 198 #define OP_SRLV 006 199 #define OP_SRAV 007 200 201 #define OP_JR 010 202 #define OP_JALR 011 203 #define OP_SYSCALL 014 204 #define OP_BREAK 015 205 #define OP_SYNC 017 /* MIPS-II, for r4000 port */ 206 207 #define OP_MFHI 020 208 #define OP_MTHI 021 209 #define OP_MFLO 022 210 #define OP_MTLO 023 211 #define OP_DSLLV 024 /* MIPS-II, for r4000 port */ 212 #define OP_DSRLV 026 /* MIPS-II, for r4000 port */ 213 #define OP_DSRAV 027 /* MIPS-II, for r4000 port */ 214 215 #define OP_MULT 030 216 #define OP_MULTU 031 217 #define OP_DIV 032 218 #define OP_DIVU 033 219 #define OP_DMULT 034 /* MIPS-II, for r4000 port */ 220 #define OP_DMULTU 035 /* MIPS-II, for r4000 port */ 221 #define OP_DDIV 036 /* MIPS-II, for r4000 port */ 222 #define OP_DDIVU 037 /* MIPS-II, for r4000 port */ 223 224 #define OP_ADD 040 225 #define OP_ADDU 041 226 #define OP_SUB 042 227 #define OP_SUBU 043 228 #define OP_AND 044 229 #define OP_OR 045 230 #define OP_XOR 046 231 #define OP_NOR 047 232 233 #define OP_SLT 052 234 #define OP_SLTU 053 235 #define OP_DADD 054 /* MIPS-II, for r4000 port */ 236 #define OP_DADDU 055 /* MIPS-II, for r4000 port */ 237 #define OP_DSUB 056 /* MIPS-II, for r4000 port */ 238 #define OP_DSUBU 057 /* MIPS-II, for r4000 port */ 239 240 #define OP_TGE 060 /* MIPS-II, for r4000 port */ 241 #define OP_TGEU 061 /* MIPS-II, for r4000 port */ 242 #define OP_TLT 062 /* MIPS-II, for r4000 port */ 243 #define OP_TLTU 063 /* MIPS-II, for r4000 port */ 244 #define OP_TEQ 064 /* MIPS-II, for r4000 port */ 245 #define OP_TNE 066 /* MIPS-II, for r4000 port */ 246 247 #define OP_DSLL 070 /* MIPS-II, for r4000 port */ 248 #define OP_DSRL 072 /* MIPS-II, for r4000 port */ 249 #define OP_DSRA 073 /* MIPS-II, for r4000 port */ 250 #define OP_DSLL32 074 /* MIPS-II, for r4000 port */ 251 #define OP_DSRL32 076 /* MIPS-II, for r4000 port */ 252 #define OP_DSRA32 077 /* MIPS-II, for r4000 port */ 253 254 /* 255 * Values for the 'func' field when 'op' == OP_SPECIAL2. 256 */ 257 #define OP_MAD 000 /* QED */ 258 #define OP_MADU 001 /* QED */ 259 #define OP_MUL 002 /* QED */ 260 261 /* 262 * Values for the 'func' field when 'op' == OP_BCOND. 263 */ 264 #define OP_BLTZ 000 265 #define OP_BGEZ 001 266 #define OP_BLTZL 002 /* MIPS-II, for r4000 port */ 267 #define OP_BGEZL 003 /* MIPS-II, for r4000 port */ 268 269 #define OP_TGEI 010 /* MIPS-II, for r4000 port */ 270 #define OP_TGEIU 011 /* MIPS-II, for r4000 port */ 271 #define OP_TLTI 012 /* MIPS-II, for r4000 port */ 272 #define OP_TLTIU 013 /* MIPS-II, for r4000 port */ 273 #define OP_TEQI 014 /* MIPS-II, for r4000 port */ 274 #define OP_TNEI 016 /* MIPS-II, for r4000 port */ 275 276 #define OP_BLTZAL 020 277 #define OP_BLTZAL 020 /* MIPS-II, for r4000 port */ 278 #define OP_BGEZAL 021 279 #define OP_BLTZALL 022 280 #define OP_BGEZALL 023 281 282 /* 283 * Values for the 'rs' field when 'op' == OP_COPz. 284 */ 285 #define OP_MF 000 286 #define OP_DMF 001 /* MIPS-II, for r4000 port */ 287 #define OP_MT 004 288 #define OP_DMT 005 /* MIPS-II, for r4000 port */ 289 #define OP_BCx 010 290 #define OP_BCy 014 291 #define OP_CF 002 292 #define OP_CT 006 293 294 /* 295 * Values for the 'rt' field when 'op' == OP_COPz. 296 */ 297 #define COPz_BC_TF_MASK 0x01 298 #define COPz_BC_TRUE 0x01 299 #define COPz_BC_FALSE 0x00 300 #define COPz_BCL_TF_MASK 0x02 /* MIPS-II, for r4000 port */ 301 #define COPz_BCL_TRUE 0x02 /* MIPS-II, for r4000 port */ 302 #define COPz_BCL_FALSE 0x00 /* MIPS-II, for r4000 port */ 303
Indexes created Wed Sep 24 05:09:52 GMT 2025