1/* $NetBSD: mips_opcode.h,v 1.12 2005/12/11 12:18:09 christos 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#include <endian.h> 43 44/* 45 * Define the instruction formats. 46 */ 47typedef union { 48 unsigned word; 49 50#if BYTE_ORDER == LITTLE_ENDIAN 51 struct { 52 unsigned imm: 16; 53 unsigned rt: 5; 54 unsigned rs: 5; 55 unsigned op: 6; 56 } IType; 57 58 struct { 59 unsigned target: 26; 60 unsigned op: 6; 61 } JType; 62 63 struct { 64 unsigned func: 6; 65 unsigned shamt: 5; 66 unsigned rd: 5; 67 unsigned rt: 5; 68 unsigned rs: 5; 69 unsigned op: 6; 70 } RType; 71 72 struct { 73 unsigned func: 6; 74 unsigned fd: 5; 75 unsigned fs: 5; 76 unsigned ft: 5; 77 unsigned fmt: 4; 78 unsigned : 1; /* always '1' */ 79 unsigned op: 6; /* always '0x11' */ 80 } FRType; 81#endif 82#if BYTE_ORDER == BIG_ENDIAN 83 struct { 84 unsigned op: 6; 85 unsigned rs: 5; 86 unsigned rt: 5; 87 unsigned imm: 16; 88 } IType; 89 90 struct { 91 unsigned op: 6; 92 unsigned target: 26; 93 } JType; 94 95 struct { 96 unsigned op: 6; 97 unsigned rs: 5; 98 unsigned rt: 5; 99 unsigned rd: 5; 100 unsigned shamt: 5; 101 unsigned func: 6; 102 } RType; 103 104 struct { 105 unsigned op: 6; /* always '0x11' */ 106 unsigned : 1; /* always '1' */ 107 unsigned fmt: 4; 108 unsigned ft: 5; 109 unsigned fs: 5; 110 unsigned fd: 5; 111 unsigned func: 6; 112 } FRType; 113#endif 114} InstFmt; 115 116/* 117 * Values for the 'op' field. 118 */ 119#define OP_SPECIAL 000 120#define OP_BCOND 001 121#define OP_J 002 122#define OP_JAL 003 123#define OP_BEQ 004 124#define OP_BNE 005 125#define OP_BLEZ 006 126#define OP_BGTZ 007 127 128#define OP_ADDI 010 129#define OP_ADDIU 011 130#define OP_SLTI 012 131#define OP_SLTIU 013 132#define OP_ANDI 014 133#define OP_ORI 015 134#define OP_XORI 016 135#define OP_LUI 017 136 137#define OP_COP0 020 138#define OP_COP1 021 139#define OP_COP2 022 140#define OP_COP3 023 141#define OP_BEQL 024 /* MIPS-II, for r4000 port */ 142#define OP_BNEL 025 /* MIPS-II, for r4000 port */ 143#define OP_BLEZL 026 /* MIPS-II, for r4000 port */ 144#define OP_BGTZL 027 /* MIPS-II, for r4000 port */ 145 146#define OP_DADDI 030 /* MIPS-II, for r4000 port */ 147#define OP_DADDIU 031 /* MIPS-II, for r4000 port */ 148#define OP_LDL 032 /* MIPS-II, for r4000 port */ 149#define OP_LDR 033 /* MIPS-II, for r4000 port */ 150 151#define OP_SPECIAL2 034 /* QED opcodes */ 152#define OP_SPECIAL3 037 /* mips32r2 opcodes */ 153 154#define OP_LB 040 155#define OP_LH 041 156#define OP_LWL 042 157#define OP_LW 043 158#define OP_LBU 044 159#define OP_LHU 045 160#define OP_LWR 046 161#define OP_LHU 045 162#define OP_LWR 046 163#define OP_LWU 047 /* MIPS-II, for r4000 port */ 164 165#define OP_SB 050 166#define OP_SH 051 167#define OP_SWL 052 168#define OP_SW 053 169#define OP_SDL 054 /* MIPS-II, for r4000 port */ 170#define OP_SDR 055 /* MIPS-II, for r4000 port */ 171#define OP_SWR 056 172#define OP_CACHE 057 /* MIPS-II, for r4000 port */ 173 174#define OP_LL 060 175#define OP_LWC0 OP_LL /* backwards source compatibility */ 176#define OP_LWC1 061 177#define OP_LWC2 062 178#define OP_LWC3 063 179#define OP_LLD 064 /* MIPS-II, for r4000 port */ 180#define OP_LDC1 065 181#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_SDC1 075 190#define OP_SD 077 /* MIPS-II, for r4000 port */ 191 192/* 193 * Values for the 'func' field when 'op' == OP_SPECIAL. 194 */ 195#define OP_SLL 000 196#define OP_SRL 002 197#define OP_SRA 003 198#define OP_SLLV 004 199#define OP_SRLV 006 200#define OP_SRAV 007 201 202#define OP_JR 010 203#define OP_JALR 011 204#define OP_SYSCALL 014 205#define OP_BREAK 015 206#define OP_SYNC 017 /* MIPS-II, for r4000 port */ 207 208#define OP_MFHI 020 209#define OP_MTHI 021 210#define OP_MFLO 022 211#define OP_MTLO 023 212#define OP_DSLLV 024 /* MIPS-II, for r4000 port */ 213#define OP_DSRLV 026 /* MIPS-II, for r4000 port */ 214#define OP_DSRAV 027 /* MIPS-II, for r4000 port */ 215 216#define OP_MULT 030 217#define OP_MULTU 031 218#define OP_DIV 032 219#define OP_DIVU 033 220#define OP_DMULT 034 /* MIPS-II, for r4000 port */ 221#define OP_DMULTU 035 /* MIPS-II, for r4000 port */ 222#define OP_DDIV 036 /* MIPS-II, for r4000 port */ 223#define OP_DDIVU 037 /* MIPS-II, for r4000 port */ 224 225#define OP_ADD 040 226#define OP_ADDU 041 227#define OP_SUB 042 228#define OP_SUBU 043 229#define OP_AND 044 230#define OP_OR 045 231#define OP_XOR 046 232#define OP_NOR 047 233 234#define OP_SLT 052 235#define OP_SLTU 053 236#define OP_DADD 054 /* MIPS-II, for r4000 port */ 237#define OP_DADDU 055 /* MIPS-II, for r4000 port */ 238#define OP_DSUB 056 /* MIPS-II, for r4000 port */ 239#define OP_DSUBU 057 /* MIPS-II, for r4000 port */ 240 241#define OP_TGE 060 /* MIPS-II, for r4000 port */ 242#define OP_TGEU 061 /* MIPS-II, for r4000 port */ 243#define OP_TLT 062 /* MIPS-II, for r4000 port */ 244#define OP_TLTU 063 /* MIPS-II, for r4000 port */ 245#define OP_TEQ 064 /* MIPS-II, for r4000 port */ 246#define OP_TNE 066 /* MIPS-II, for r4000 port */ 247 248#define OP_DSLL 070 /* MIPS-II, for r4000 port */ 249#define OP_DSRL 072 /* MIPS-II, for r4000 port */ 250#define OP_DSRA 073 /* MIPS-II, for r4000 port */ 251#define OP_DSLL32 074 /* MIPS-II, for r4000 port */ 252#define OP_DSRL32 076 /* MIPS-II, for r4000 port */ 253#define OP_DSRA32 077 /* MIPS-II, for r4000 port */ 254 255/* 256 * Values for the 'func' field when 'op' == OP_SPECIAL2. 257 */ 258#define OP_MAD 000 /* QED */ 259#define OP_MADU 001 /* QED */ 260#define OP_MUL 002 /* QED */ 261 262/* 263 * Values for the 'func' field when 'op' == OP_SPECIAL3. 264 */ 265#define OP_EXT 000 266#define OP_INS 004 267#define OP_BSHFL 040 268 269/* 270 * Values for the 'shamt' field when OP_SPECIAL3 && func OP_BSHFL. 271 */ 272#define OP_WSBH 002 273#define OP_SEB 020 274#define OP_SEH 030 275 276/* 277 * Values for the 'func' field when 'op' == OP_BCOND. 278 */ 279#define OP_BLTZ 000 280#define OP_BGEZ 001 281#define OP_BLTZL 002 /* MIPS-II, for r4000 port */ 282#define OP_BGEZL 003 /* MIPS-II, for r4000 port */ 283 284#define OP_TGEI 010 /* MIPS-II, for r4000 port */ 285#define OP_TGEIU 011 /* MIPS-II, for r4000 port */ 286#define OP_TLTI 012 /* MIPS-II, for r4000 port */ 287#define OP_TLTIU 013 /* MIPS-II, for r4000 port */ 288#define OP_TEQI 014 /* MIPS-II, for r4000 port */ 289#define OP_TNEI 016 /* MIPS-II, for r4000 port */ 290 291#define OP_BLTZAL 020 /* MIPS-II, for r4000 port */ 292#define OP_BGEZAL 021 293#define OP_BLTZALL 022 294#define OP_BGEZALL 023 295 296/* 297 * Values for the 'rs' field when 'op' == OP_COPz. 298 */ 299#define OP_MF 000 300#define OP_DMF 001 /* MIPS-II, for r4000 port */ 301#define OP_MT 004 302#define OP_DMT 005 /* MIPS-II, for r4000 port */ 303#define OP_BCx 010 304#define OP_BCy 014 305#define OP_CF 002 306#define OP_CT 006 307 308/* 309 * Values for the 'rt' field when 'op' == OP_COPz. 310 */ 311#define COPz_BC_TF_MASK 0x01 312#define COPz_BC_TRUE 0x01 313#define COPz_BC_FALSE 0x00 314#define COPz_BCL_TF_MASK 0x02 /* MIPS-II, for r4000 port */ 315#define COPz_BCL_TRUE 0x02 /* MIPS-II, for r4000 port */ 316#define COPz_BCL_FALSE 0x00 /* MIPS-II, for r4000 port */ 317