1/* $NetBSD: mips_opcode.h,v 1.17 2011/08/17 06:59:28 matt 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 */ 45typedef 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_REGIMM 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 007 125 126#define OP_ADDI 010 127#define OP_ADDIU 011 128#define OP_SLTI 012 129#define OP_SLTIU 013 130#define OP_ANDI 014 131#define OP_ORI 015 132#define OP_XORI 016 133#define OP_LUI 017 134 135#define OP_COP0 020 136#define OP_COP1 021 137#define OP_COP2 022 138#define OP_COP3 023 139#define OP_BEQL 024 /* MIPS-II, for r4000 port */ 140#define OP_BNEL 025 /* MIPS-II, for r4000 port */ 141#define OP_BLEZL 026 /* MIPS-II, for r4000 port */ 142#define OP_BGTZL 027 /* MIPS-II, for r4000 port */ 143 144#define OP_DADDI 030 /* MIPS-II, for r4000 port */ 145#define OP_DADDIU 031 /* MIPS-II, for r4000 port */ 146#define OP_LDL 032 /* MIPS-II, for r4000 port */ 147#define OP_LDR 033 /* MIPS-II, for r4000 port */ 148 149#define OP_SPECIAL2 034 /* QED opcodes */ 150#define OP_SPECIAL3 037 151 152#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_PREF 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_RSVD073 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#define OP_MSUB 004 /* MIPS32/64 */ 260#define OP_MSUBU 005 /* MIPS32/64 */ 261#define OP_CLZ 040 /* MIPS32/64 */ 262#define OP_CLO 041 /* MIPS32/64 */ 263#define OP_DCLZ 044 /* MIPS32/64 */ 264#define OP_DCLO 045 /* MIPS32/64 */ 265 266/* 267 * Values for the 'func' field when 'op' == OP_SPECIAL3. 268 */ 269#define OP_LX 012 /* DSP */ 270#define OP_RDHWR 073 /* MIPS32/64 r2 */ 271 272#define OP_LX_LWX 0 /* lwx */ 273#define OP_LX_LHX 4 /* lhx */ 274#define OP_LX_LBUX 6 /* lbux */ 275#define OP_LX_LDX 8 /* ldx */ 276 277/* 278 * Values for the 'func' field when 'op' == OP_REGIMM. 279 */ 280#define OP_BLTZ 000 281#define OP_BGEZ 001 282#define OP_BLTZL 002 /* MIPS-II, for r4000 port */ 283#define OP_BGEZL 003 /* MIPS-II, for r4000 port */ 284 285#define OP_TGEI 010 /* MIPS-II, for r4000 port */ 286#define OP_TGEIU 011 /* MIPS-II, for r4000 port */ 287#define OP_TLTI 012 /* MIPS-II, for r4000 port */ 288#define OP_TLTIU 013 /* MIPS-II, for r4000 port */ 289#define OP_TEQI 014 /* MIPS-II, for r4000 port */ 290#define OP_TNEI 016 /* MIPS-II, for r4000 port */ 291 292#define OP_BLTZAL 020 /* MIPS-II, for r4000 port */ 293#define OP_BGEZAL 021 294#define OP_BLTZALL 022 295#define OP_BGEZALL 023 296 297/* 298 * Values for the 'rs' field when 'op' == OP_COPz. 299 */ 300#define OP_MF 000 301#define OP_DMF 001 /* MIPS-II, for r4000 port */ 302#define OP_CF 002 303#define OP_MFH 003 304#define OP_MT 004 305#define OP_DMT 005 /* MIPS-II, for r4000 port */ 306#define OP_CT 006 307#define OP_MTH 007 308#define OP_BCx 010 309#define OP_BCy 014 310 311/* 312 * Values for the 'rt' field when 'op' == OP_COPz. 313 */ 314#define COPz_BC_TF_MASK 0x01 315#define COPz_BC_TRUE 0x01 316#define COPz_BC_FALSE 0x00 317#define COPz_BCL_TF_MASK 0x02 /* MIPS-II, for r4000 port */ 318#define COPz_BCL_TRUE 0x02 /* MIPS-II, for r4000 port */ 319#define COPz_BCL_FALSE 0x00 /* MIPS-II, for r4000 port */ 320