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#if __mips_isa_rev < 6 129#define OP_ADDI 010 130#else 131#define OP_POP10 010 132#endif 133 134#define OP_ADDIU 011 135#define OP_SLTI 012 136#define OP_SLTIU 013 137#define OP_ANDI 014 138#define OP_ORI 015 139#define OP_XORI 016 140 141#if __mips_isa_rev < 6 142#define OP_LUI 017 143#else 144#define OP_AUI 017 145#endif 146 147#define OP_COP0 020 148#define OP_COP1 021 149#define OP_COP2 022 150 151#if __mips_isa_rev < 6 152#define OP_COP3 023 153#define OP_BEQL 024 154#define OP_BNEL 025 155#define OP_BLEZL 026 156#define OP_BGTZL 027 157#define OP_DADDI 030 158#else 159#define OP_POP26 026 160#define OP_POP27 027 161#define OP_POP30 030 162#endif 163 164#define OP_DADDIU 031 165 166#if __mips_isa_rev < 6 167#define OP_LDL 032 168#define OP_LDR 033 169#define OP_SPECIAL2 034 170#else 171#define OP_DAUI 035 172#endif 173 174#define OP_SPECIAL3 037 175 176#define OP_LB 040 177#define OP_LH 041 178 179#if __mips_isa_rev < 6 180#define OP_LWL 042 181#endif 182 183#define OP_LW 043 184#define OP_LBU 044 185#define OP_LHU 045 186#define OP_LWR 046 187#define OP_LHU 045 188 189#if __mips_isa_rev < 6 190#define OP_LWR 046 191#endif 192 193#define OP_LWU 047 194 195#define OP_SB 050 196#define OP_SH 051 197 198#if __mips_isa_rev < 6 199#define OP_SWL 052 200#endif 201 202#define OP_SW 053 203 204#if __mips_isa_rev < 6 205#define OP_SDL 054 206#define OP_SDR 055 207#define OP_SWR 056 208#define OP_CACHE 057 209#define OP_LL 060 210#define OP_LWC0 OP_LL 211#define OP_LWC1 061 212#define OP_LWC2 062 213#define OP_LWC3 063 214#define OP_LLD 064 215#else 216#define OP_LWC1 061 217#define OP_BC 062 218#endif 219 220#define OP_LDC1 065 221#define OP_LD 067 222 223#if __mips_isa_rev < 6 224#define OP_SC 070 225#define OP_SWC0 OP_SC 226#endif 227 228#define OP_SWC1 071 229 230#if __mips_isa_rev < 6 231#define OP_SWC2 072 232#define OP_SWC3 073 233#define OP_SCD 074 234#else 235#define OP_BALC 072 236#endif 237 238#define OP_SDC1 075 239#define OP_SD 077 240 241/* 242 * Values for the 'func' field when 'op' == OP_SPECIAL. 243 */ 244#define OP_SLL 000 245#define OP_SRL 002 246#define OP_SRA 003 247#define OP_SLLV 004 248#define OP_SRLV 006 249#define OP_SRAV 007 250 251#if __mips_isa_rev < 6 252#define OP_JR 010 253#endif 254 255#define OP_JALR 011 256#define OP_SYSCALL 014 257#define OP_BREAK 015 258#define OP_SYNC 017 259 260#if __mips_isa_rev < 6 261#define OP_MFHI 020 262#define OP_MTHI 021 263#define OP_MFLO 022 264#define OP_MTLO 023 265#else 266#define OP_CLZ 020 267#define OP_CLO 021 268#define OP_DCLZ 022 269#define OP_DCLO 023 270#endif 271 272#define OP_DSLLV 024 273#define OP_DSRLV 026 274#define OP_DSRAV 027 275 276#if __mips_isa_rev < 6 277#define OP_MULT 030 278#define OP_MULTU 031 279#define OP_DIV 032 280#define OP_DIVU 033 281#define OP_DMULT 034 282#define OP_DMULTU 035 283#define OP_DDIV 036 284#define OP_DDIVU 037 285#else 286#define OP_SOP30 030 287#define OP_SOP31 031 288#define OP_SOP32 032 289#define OP_SOP33 033 290#define OP_SOP34 034 291#define OP_SOP35 035 292#define OP_SOP36 036 293#define OP_SOP37 037 294#endif 295 296#define OP_ADD 040 297#define OP_ADDU 041 298#define OP_SUB 042 299#define OP_SUBU 043 300#define OP_AND 044 301#define OP_OR 045 302#define OP_XOR 046 303#define OP_NOR 047 304 305#define OP_SLT 052 306#define OP_SLTU 053 307#define OP_DADD 054 308#define OP_DADDU 055 309#define OP_DSUB 056 310#define OP_DSUBU 057 311 312#define OP_TGE 060 313#define OP_TGEU 061 314#define OP_TLT 062 315#define OP_TLTU 063 316#define OP_TEQ 064 317#define OP_TNE 066 318 319#define OP_DSLL 070 320#define OP_DSRL 072 321#define OP_DSRA 073 322#define OP_DSLL32 074 323#define OP_DSRL32 076 324#define OP_DSRA32 077 325 326#if __mips_isa_rev < 6 327/* 328 * Values for the 'func' field when 'op' == OP_SPECIAL2. 329 * OP_SPECIAL2 opcodes are removed in mips32r6 330 */ 331#define OP_MAD 000 /* QED */ 332#define OP_MADU 001 /* QED */ 333#define OP_MUL 002 /* QED */ 334#endif 335 336/* 337 * Values for the 'func' field when 'op' == OP_SPECIAL3. 338 */ 339#define OP_EXT 000 340#define OP_DEXTM 001 341#define OP_DEXTU 002 342#define OP_DEXT 003 343#define OP_INS 004 344#define OP_DINSM 005 345#define OP_DINSU 006 346#define OP_DINS 007 347#define OP_BSHFL 040 348#define OP_RDHWR 073 349 350/* 351 * Values for the 'shamt' field when OP_SPECIAL3 && func OP_BSHFL. 352 */ 353 354#define OP_WSBH 002 355#define OP_SEB 020 356#define OP_SEH 030 357 358#if __mips_isa_rev == 6 359/* 360 * Values for the 'shamt' field when OP_SOP30. 361 */ 362#define OP_MUL 002 363#define OP_MUH 003 364#endif 365 366/* 367 * Values for the 'func' field when 'op' == OP_BCOND. 368 */ 369#define OP_BLTZ 000 370#define OP_BGEZ 001 371 372#if __mips_isa_rev < 6 373#define OP_BLTZL 002 374#define OP_BGEZL 003 375#define OP_TGEI 010 376#define OP_TGEIU 011 377#define OP_TLTI 012 378#define OP_TLTIU 013 379#define OP_TEQI 014 380#define OP_TNEI 016 381#define OP_BLTZAL 020 382#define OP_BGEZAL 021 383#define OP_BLTZALL 022 384#define OP_BGEZALL 023 385#else 386#define OP_NAL 020 387#define OP_BAL 021 388#endif 389 390/* 391 * Values for the 'rs' field when 'op' == OP_COPz. 392 */ 393#define OP_MF 000 394#define OP_DMF 001 395#define OP_MT 004 396#define OP_DMT 005 397#define OP_BCx 010 398#define OP_BCy 014 399#define OP_CF 002 400#define OP_CT 006 401 402/* 403 * Values for the 'rt' field when 'op' == OP_COPz. 404 */ 405#define COPz_BC_TF_MASK 0x01 406#define COPz_BC_TRUE 0x01 407#define COPz_BC_FALSE 0x00 408#define COPz_BCL_TF_MASK 0x02 409#define COPz_BCL_TRUE 0x02 410#define COPz_BCL_FALSE 0x00 411