1 /* $NetBSD: instr.h,v 1.4 2005/12/11 12:18:43 christos Exp $ */ 2 3 /*- 4 * SPDX-License-Identifier: BSD-3-Clause 5 * 6 * Copyright (c) 1992, 1993 7 * The Regents of the University of California. All rights reserved. 8 * 9 * This software was developed by the Computer Systems Engineering group 10 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 11 * contributed to Berkeley. 12 * 13 * All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Lawrence Berkeley Laboratory. 17 * 18 * Redistribution and use in source and binary forms, with or without 19 * modification, are permitted provided that the following conditions 20 * are met: 21 * 1. Redistributions of source code must retain the above copyright 22 * notice, this list of conditions and the following disclaimer. 23 * 2. Redistributions in binary form must reproduce the above copyright 24 * notice, this list of conditions and the following disclaimer in the 25 * documentation and/or other materials provided with the distribution. 26 * 3. Neither the name of the University nor the names of its contributors 27 * may be used to endorse or promote products derived from this software 28 * without specific prior written permission. 29 * 30 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 31 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 32 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 33 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 34 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 35 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 36 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 37 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 38 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 39 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 40 * SUCH DAMAGE. 41 */ 42 43 /* 44 * An instruction. 45 */ 46 union instr { 47 int i_int; /* as a whole */ 48 49 /* 50 * Any instruction type. 51 */ 52 struct { 53 u_int i_opcd:6; /* first-level decode */ 54 u_int :25; 55 u_int i_rc:1; 56 } i_any; 57 58 /* 59 * Format A 60 */ 61 struct { 62 u_int i_opcd:6; 63 u_int i_frt:5; 64 u_int i_fra:5; 65 u_int i_frb:5; 66 u_int i_frc:5; 67 u_int i_xo:5; 68 u_int i_rc:1; 69 } i_a; 70 71 /* 72 * Format B 73 */ 74 struct { 75 u_int i_opcd:6; 76 int i_bo:5; 77 int i_bi:5; 78 int i_bd:14; 79 int i_aa:1; 80 int i_lk:1; 81 } i_b; 82 83 /* 84 * Format D 85 */ 86 struct { 87 u_int i_opcd:6; 88 u_int i_rs:5; 89 u_int i_ra:5; 90 int i_d:16; 91 } i_d; 92 93 /* 94 * Format DE 95 */ 96 struct { 97 u_int i_opcd:6; 98 u_int i_rs:5; 99 u_int i_ra:5; 100 int i_d:12; 101 u_int i_xo:4; 102 } i_de; 103 104 /* 105 * Format I 106 */ 107 struct { 108 u_int i_opcd:6; 109 int i_li:24; 110 int i_aa:1; 111 int i_lk:1; 112 } i_i; 113 114 /* 115 * Format M 116 */ 117 struct { 118 u_int i_opcd:6; 119 u_int i_rs:5; 120 u_int i_ra:5; 121 u_int i_rb:5; 122 int i_mb:5; 123 int i_me:5; 124 u_int i_rc:1; 125 } i_m; 126 127 /* 128 * Format MD 129 */ 130 struct { 131 u_int i_opcd:6; 132 u_int i_rs:5; 133 u_int i_ra:5; 134 u_int i_rb:5; 135 int i_sh1_5:5; 136 int i_mb:6; 137 u_int i_xo:3; 138 int i_sh0:2; 139 u_int i_rc:1; 140 } i_md; 141 142 /* 143 * Format MDS 144 */ 145 struct { 146 u_int i_opcd:6; 147 u_int i_rs:5; 148 u_int i_ra:5; 149 u_int i_rb:5; 150 int i_sh:5; 151 int i_mb:6; 152 u_int i_xo:4; 153 u_int i_rc:1; 154 } i_mds; 155 156 /* 157 * Format S 158 */ 159 struct { 160 u_int i_opcd:6; 161 int :24; 162 int i_i:1; 163 int :1; 164 } i_s; 165 166 /* 167 * Format X 168 */ 169 struct { 170 u_int i_opcd:6; 171 u_int i_rs:5; 172 u_int i_ra:5; 173 u_int i_rb:5; 174 u_int i_xo:10; 175 u_int i_rc:1; 176 } i_x; 177 178 /* 179 * Format XFL 180 */ 181 struct { 182 u_int i_opcd:6; 183 int :1; 184 int i_flm:8; 185 int :1; 186 int i_frb:5; 187 u_int i_xo:10; 188 int :1; 189 } i_xfl; 190 191 /* 192 * Format XFX 193 */ 194 struct { 195 u_int i_opcd:6; 196 int i_dcrn:10; 197 u_int i_xo:10; 198 int :1; 199 } i_xfx; 200 201 /* 202 * Format XL 203 */ 204 struct { 205 u_int i_opcd:6; 206 int i_bt:5; 207 int i_ba:5; 208 int i_bb:5; 209 u_int i_xo:10; 210 int i_lk:1; 211 } i_xl; 212 213 /* 214 * Format XS 215 */ 216 struct { 217 u_int i_opcd:6; 218 u_int i_rs:5; 219 u_int i_ra:5; 220 int i_sh0_4:5; 221 u_int i_xo:9; 222 int i_sh5:1; 223 u_int i_rc:1; 224 } i_xs; 225 226 }; 227 228 #define i_rt i_rs 229 230 /* 231 * Primary opcode numbers: 232 */ 233 234 #define OPC_TDI 0x02 235 #define OPC_TWI 0x03 236 #define OPC_MULLI 0x07 237 #define OPC_SUBFIC 0x08 238 #define OPC_BCE 0x09 239 #define OPC_CMPLI 0x0a 240 #define OPC_CMPI 0x0b 241 #define OPC_ADDIC 0x0c 242 #define OPC_ADDIC_DOT 0x0d 243 #define OPC_ADDI 0x0e 244 #define OPC_ADDIS 0x0f 245 #define OPC_BC 0x10 246 #define OPC_SC 0x11 247 #define OPC_B 0x12 248 #define OPC_branch_19 0x13 249 #define OPC_RLWIMI 0x14 250 #define OPC_RLWINM 0x15 251 #define OPC_BE 0x16 252 #define OPC_RLWNM 0x17 253 #define OPC_ORI 0x18 254 #define OPC_ORIS 0x19 255 #define OPC_XORI 0x1a 256 #define OPC_XORIS 0x1b 257 #define OPC_ANDI 0x1c 258 #define OPC_ANDIS 0x1d 259 #define OPC_dwe_rot_30 0x1e 260 #define OPC_integer_31 0x1f 261 #define OPC_LWZ 0x20 262 #define OPC_LWZU 0x21 263 #define OPC_LBZ 0x22 264 #define OPC_LBZU 0x23 265 #define OPC_STW 0x24 266 #define OPC_STWU 0x25 267 #define OPC_STB 0x26 268 #define OPC_STBU 0x27 269 #define OPC_LHZ 0x28 270 #define OPC_LHZU 0x29 271 #define OPC_LHA 0x2a 272 #define OPC_LHAU 0x2b 273 #define OPC_STH 0x2c 274 #define OPC_STHU 0x2d 275 #define OPC_LMW 0x2e 276 #define OPC_STMW 0x2f 277 #define OPC_LFS 0x30 278 #define OPC_LFSU 0x31 279 #define OPC_LFD 0x32 280 #define OPC_LFDU 0x33 281 #define OPC_STFS 0x34 282 #define OPC_STFSU 0x35 283 #define OPC_STFD 0x36 284 #define OPC_STFDU 0x37 285 #define OPC_load_st_58 0x3a 286 #define OPC_sp_fp_59 0x3b 287 #define OPC_load_st_62 0x3e 288 #define OPC_dp_fp_63 0x3f 289 290 /* 291 * Opcode 31 sub-types (FP only) 292 */ 293 #define OPC31_TW 0x004 294 #define OPC31_LFSX 0x217 295 #define OPC31_LFSUX 0x237 296 #define OPC31_LFDX 0x257 297 #define OPC31_LFDUX 0x277 298 #define OPC31_STFSX 0x297 299 #define OPC31_STFSUX 0x2b7 300 #define OPC31_STFDX 0x2d7 301 #define OPC31_STFDUX 0x2f7 302 #define OPC31_STFIWX 0x3d7 303 304 /* Mask for all valid indexed FP load/store ops (except stfiwx) */ 305 #define OPC31_FPMASK 0x31f 306 #define OPC31_FPOP 0x217 307 308 /* 309 * Opcode 59 sub-types: 310 */ 311 312 #define OPC59_FDIVS 0x12 313 #define OPC59_FSUBS 0x14 314 #define OPC59_FADDS 0x15 315 #define OPC59_FSQRTS 0x16 316 #define OPC59_FRES 0x18 317 #define OPC59_FMULS 0x19 318 #define OPC59_FMSUBS 0x1c 319 #define OPC59_FMADDS 0x1d 320 #define OPC59_FNMSUBS 0x1e 321 #define OPC59_FNMADDS 0x1f 322 323 /* 324 * Opcode 62 sub-types: 325 */ 326 #define OPC62_LDE 0x0 327 #define OPC62_LDEU 0x1 328 #define OPC62_LFSE 0x4 329 #define OPC62_LFSEU 0x5 330 #define OPC62_LFDE 0x6 331 #define OPC62_LFDEU 0x7 332 #define OPC62_STDE 0x8 333 #define OPC62_STDEU 0x9 334 #define OPC62_STFSE 0xc 335 #define OPC62_STFSEU 0xd 336 #define OPC62_STFDE 0xe 337 #define OPC62_STFDEU 0xf 338 339 /* 340 * Opcode 63 sub-types: 341 * 342 * (The first group are masks....) 343 */ 344 345 #define OPC63M_MASK 0x10 346 #define OPC63M_FDIV 0x12 347 #define OPC63M_FSUB 0x14 348 #define OPC63M_FADD 0x15 349 #define OPC63M_FSQRT 0x16 350 #define OPC63M_FSEL 0x17 351 #define OPC63M_FMUL 0x19 352 #define OPC63M_FRSQRTE 0x1a 353 #define OPC63M_FMSUB 0x1c 354 #define OPC63M_FMADD 0x1d 355 #define OPC63M_FNMSUB 0x1e 356 #define OPC63M_FNMADD 0x1f 357 358 #define OPC63_FCMPU 0x00 359 #define OPC63_FRSP 0x0c 360 #define OPC63_FCTIW 0x0e 361 #define OPC63_FCTIWZ 0x0f 362 #define OPC63_FCMPO 0x20 363 #define OPC63_MTFSB1 0x26 364 #define OPC63_FNEG 0x28 365 #define OPC63_MCRFS 0x40 366 #define OPC63_MTFSB0 0x46 367 #define OPC63_FMR 0x48 368 #define OPC63_MTFSFI 0x86 369 #define OPC63_FNABS 0x88 370 #define OPC63_FABS 0x108 371 #define OPC63_MFFS 0x247 372 #define OPC63_MTFSF 0x2c7 373 #define OPC63_FCTID 0x32e 374 #define OPC63_FCTIDZ 0x32f 375 #define OPC63_FCFID 0x34e 376 377 /* 378 * FPU data types. 379 */ 380 #define FTYPE_LNG -1 /* data = 64-bit signed long integer */ 381 #define FTYPE_INT 0 /* data = 32-bit signed integer */ 382 #define FTYPE_SNG 1 /* data = 32-bit float */ 383 #define FTYPE_DBL 2 /* data = 64-bit double */ 384