mips_opcode.h revision 1.10
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
Indexes created Mon Sep 22 13:09:51 GMT 2025