1 /* $OpenBSD: mips_opcode.h,v 1.2 2005/08/07 07:29:44 miod 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 _MIPS_MIPS_OPCODE_H_ 38 #define _MIPS_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 */ 48 typedef 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; /* always '0x11' */ 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 #endif 83 #if BYTE_ORDER == LITTLE_ENDIAN 84 struct { 85 unsigned imm: 16; 86 unsigned rt: 5; 87 unsigned rs: 5; 88 unsigned op: 6; 89 } IType; 90 91 struct { 92 unsigned target: 26; 93 unsigned op: 6; 94 } JType; 95 96 struct { 97 unsigned func: 6; 98 unsigned shamt: 5; 99 unsigned rd: 5; 100 unsigned rt: 5; 101 unsigned rs: 5; 102 unsigned op: 6; 103 } RType; 104 105 struct { 106 unsigned func: 6; 107 unsigned fd: 5; 108 unsigned fs: 5; 109 unsigned ft: 5; 110 unsigned fmt: 4; 111 unsigned : 1; /* always '1' */ 112 unsigned op: 6; /* always '0x11' */ 113 } FRType; 114 #endif 115 } InstFmt; 116 117 /* 118 * Values for the 'op' field. 119 */ 120 #define OP_SPECIAL 000 121 #define OP_BCOND 001 122 #define OP_J 002 123 #define OP_JAL 003 124 #define OP_BEQ 004 125 #define OP_BNE 005 126 #define OP_BLEZ 006 127 #define OP_BGTZ 007 128 129 #define OP_ADDI 010 130 #define OP_ADDIU 011 131 #define OP_SLTI 012 132 #define OP_SLTIU 013 133 #define OP_ANDI 014 134 #define OP_ORI 015 135 #define OP_XORI 016 136 #define OP_LUI 017 137 138 #define OP_COP0 020 139 #define OP_COP1 021 140 #define OP_COP2 022 141 #define OP_COP3 023 142 #define OP_BEQL 024 143 #define OP_BNEL 025 144 #define OP_BLEZL 026 145 #define OP_BGTZL 027 146 147 #define OP_DADDI 030 148 #define OP_DADDIU 031 149 #define OP_LDL 032 150 #define OP_LDR 033 151 152 #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 047 162 163 #define OP_SB 050 164 #define OP_SH 051 165 #define OP_SWL 052 166 #define OP_SW 053 167 #define OP_SDL 054 168 #define OP_SDR 055 169 #define OP_SWR 056 170 #define OP_CACHE 057 171 172 #define OP_LL 060 173 #define OP_LWC1 061 174 #define OP_LWC2 062 175 #define OP_LWC3 063 176 #define OP_LLD 064 177 #define OP_LD 067 178 179 #define OP_SC 070 180 #define OP_SWC1 071 181 #define OP_SWC2 072 182 #define OP_SWC3 073 183 #define OP_SCD 074 184 #define OP_SD 077 185 186 /* 187 * Values for the 'func' field when 'op' == OP_SPECIAL. 188 */ 189 #define OP_SLL 000 190 #define OP_SRL 002 191 #define OP_SRA 003 192 #define OP_SLLV 004 193 #define OP_SRLV 006 194 #define OP_SRAV 007 195 196 #define OP_JR 010 197 #define OP_JALR 011 198 #define OP_SYSCALL 014 199 #define OP_BREAK 015 200 #define OP_SYNC 017 201 202 #define OP_MFHI 020 203 #define OP_MTHI 021 204 #define OP_MFLO 022 205 #define OP_MTLO 023 206 #define OP_DSLLV 024 207 #define OP_DSRLV 026 208 #define OP_DSRAV 027 209 210 #define OP_MULT 030 211 #define OP_MULTU 031 212 #define OP_DIV 032 213 #define OP_DIVU 033 214 #define OP_DMULT 034 215 #define OP_DMULTU 035 216 #define OP_DDIV 036 217 #define OP_DDIVU 037 218 219 220 #define OP_ADD 040 221 #define OP_ADDU 041 222 #define OP_SUB 042 223 #define OP_SUBU 043 224 #define OP_AND 044 225 #define OP_OR 045 226 #define OP_XOR 046 227 #define OP_NOR 047 228 229 #define OP_SLT 052 230 #define OP_SLTU 053 231 #define OP_DADD 054 232 #define OP_DADDU 055 233 #define OP_DSUB 056 234 #define OP_DSUBU 057 235 236 #define OP_TGE 060 237 #define OP_TGEU 061 238 #define OP_TLT 062 239 #define OP_TLTU 063 240 #define OP_TEQ 064 241 #define OP_TNE 066 242 243 #define OP_DSLL 070 244 #define OP_DSRL 072 245 #define OP_DSRA 073 246 #define OP_DSLL32 074 247 #define OP_DSRL32 076 248 #define OP_DSRA32 077 249 250 /* 251 * Values for the 'func' field when 'op' == OP_BCOND. 252 */ 253 #define OP_BLTZ 000 254 #define OP_BGEZ 001 255 #define OP_BLTZL 002 256 #define OP_BGEZL 003 257 258 #define OP_TGEI 010 259 #define OP_TGEIU 011 260 #define OP_TLTI 012 261 #define OP_TLTIU 013 262 #define OP_TEQI 014 263 #define OP_TNEI 016 264 265 #define OP_BLTZAL 020 266 #define OP_BLTZAL 020 267 #define OP_BGEZAL 021 268 #define OP_BLTZALL 022 269 #define OP_BGEZALL 023 270 271 /* 272 * Values for the 'rs' field when 'op' == OP_COPz. 273 */ 274 #define OP_MF 000 275 #define OP_DMF 001 276 #define OP_MT 004 277 #define OP_DMT 005 278 #define OP_BCx 010 279 #define OP_BCy 014 280 #define OP_CF 002 281 #define OP_CT 006 282 283 /* 284 * Values for the 'rt' field when 'op' == OP_COPz. 285 */ 286 #define COPz_BC_TF_MASK 0x01 287 #define COPz_BC_TRUE 0x01 288 #define COPz_BC_FALSE 0x00 289 #define COPz_BCL_TF_MASK 0x02 290 #define COPz_BCL_TRUE 0x02 291 #define COPz_BCL_FALSE 0x00 292 293 #endif /* !_MIPS_MIPS_OPCODE_H_ */ 294