instr.h revision 1.1.2.1
1 /* $NetBSD: instr.h,v 1.1.2.1 2001/06/21 19:32:14 nathanw Exp $ */ 2 3 /* 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This software was developed by the Computer Systems Engineering group 8 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 9 * contributed to Berkeley. 10 * 11 * All advertising materials mentioning features or use of this software 12 * must display the following acknowledgement: 13 * This product includes software developed by the University of 14 * California, Lawrence Berkeley Laboratory. 15 * 16 * Redistribution and use in source and binary forms, with or without 17 * modification, are permitted provided that the following conditions 18 * are met: 19 * 1. Redistributions of source code must retain the above copyright 20 * notice, this list of conditions and the following disclaimer. 21 * 2. Redistributions in binary form must reproduce the above copyright 22 * notice, this list of conditions and the following disclaimer in the 23 * documentation and/or other materials provided with the distribution. 24 * 3. All advertising materials mentioning features or use of this software 25 * must display the following acknowledgement: 26 * This product includes software developed by the University of 27 * California, Berkeley and its contributors. 28 * 4. Neither the name of the University nor the names of its contributors 29 * may be used to endorse or promote products derived from this software 30 * without specific prior written permission. 31 * 32 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 33 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 34 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 35 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 36 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 37 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 38 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 39 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 40 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 41 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 42 * SUCH DAMAGE. 43 * 44 * @(#)instr.h 8.1 (Berkeley) 6/11/93 45 */ 46 47 /* 48 * An instruction. 49 */ 50 union instr { 51 int i_int; /* as a whole */ 52 53 54 /* 55 * Any instruction type. 56 */ 57 struct { 58 u_int i_opcd:6; /* first-level decode */ 59 u_int :25; 60 u_int i_rc:1; 61 } i_any; 62 63 /* 64 * Format A 65 */ 66 struct { 67 u_int i_opcd:6; 68 u_int i_frt:5; 69 u_int i_fra:5; 70 u_int i_frb:5; 71 u_int i_frc:5; 72 u_int i_xo:5; 73 u_int i_rc:1; 74 } i_a; 75 76 /* 77 * Format B 78 */ 79 struct { 80 u_int i_opcd:6; 81 int i_bo:5; 82 int i_bi:5; 83 int i_bd:14; 84 int i_aa:1; 85 int i_lk:1; 86 } i_b; 87 88 /* 89 * Format D 90 */ 91 struct { 92 u_int i_opcd:6; 93 u_int i_rs:5; 94 u_int i_ra:5; 95 int i_d:16; 96 } i_d; 97 98 /* 99 * Format DE 100 */ 101 struct { 102 u_int i_opcd:6; 103 u_int i_rs:5; 104 u_int i_ra:5; 105 int i_d:12; 106 u_int i_xo:4; 107 } i_de; 108 109 /* 110 * Format I 111 */ 112 struct { 113 u_int i_opcd:6; 114 int i_li:24; 115 int i_aa:1; 116 int i_lk:1; 117 } i_i; 118 119 /* 120 * Format M 121 */ 122 struct { 123 u_int i_opcd:6; 124 u_int i_rs:5; 125 u_int i_ra:5; 126 u_int i_rb:5; 127 int i_mb:5; 128 int i_me:5; 129 u_int i_rc:1; 130 } i_m; 131 132 /* 133 * Format MD 134 */ 135 struct { 136 u_int i_opcd:6; 137 u_int i_rs:5; 138 u_int i_ra:5; 139 u_int i_rb:5; 140 int i_sh1_5:5; 141 int i_mb:6; 142 u_int i_xo:3; 143 int i_sh0:2; 144 u_int i_rc:1; 145 } i_md; 146 147 /* 148 * Format MDS 149 */ 150 struct { 151 u_int i_opcd:6; 152 u_int i_rs:5; 153 u_int i_ra:5; 154 u_int i_rb:5; 155 int i_sh:5; 156 int i_mb:6; 157 u_int i_xo:4; 158 u_int i_rc:1; 159 } i_mds; 160 161 162 /* 163 * Format S 164 */ 165 struct { 166 u_int i_opcd:6; 167 int :24; 168 int i_i:1; 169 int :1; 170 } i_s; 171 172 /* 173 * Format X 174 */ 175 struct { 176 u_int i_opcd:6; 177 u_int i_rs:5; 178 u_int i_ra:5; 179 u_int i_rb:5; 180 u_int i_xo:10; 181 u_int i_rc:1; 182 } i_x; 183 184 /* 185 * Format XFL 186 */ 187 struct { 188 u_int i_opcd:6; 189 int :1; 190 int i_flm:8; 191 int :1; 192 int i_frb:5; 193 u_int i_xo:10; 194 int :1; 195 } i_xfl; 196 197 /* 198 * Format XFX 199 */ 200 struct { 201 u_int i_opcd:6; 202 int i_dcrn:10; 203 u_int i_xo:10; 204 int :1; 205 } i_xfx; 206 207 /* 208 * Format XL 209 */ 210 struct { 211 u_int i_opcd:6; 212 int i_bt:5; 213 int i_ba:5; 214 int i_bb:5; 215 u_int i_xo:10; 216 int i_lk:1; 217 } i_xl; 218 219 /* 220 * Format XS 221 */ 222 struct { 223 u_int i_opcd:6; 224 u_int i_rs:5; 225 u_int i_ra:5; 226 int i_sh0_4:5; 227 u_int i_xo:9; 228 int i_sh5:1; 229 u_int i_rc:1; 230 } i_xs; 231 232 }; 233 234 #define i_rt i_rs 235 236 /* 237 * Primary opcode numbers: 238 */ 239 240 #define OPC_TDI 0x02 241 #define OPC_TWI 0x03 242 #define OPC_MULLI 0x07 243 #define OPC_SUBFIC 0x08 244 #define OPC_BCE 0x09 245 #define OPC_CMPLI 0x0a 246 #define OPC_CMPI 0x0b 247 #define OPC_ADDIC 0x0c 248 #define OPC_ADDIC_DOT 0x0d 249 #define OPC_ADDI 0x0e 250 #define OPC_ADDIS 0x0f 251 #define OPC_BC 0x10 252 #define OPC_SC 0x11 253 #define OPC_B 0x12 254 #define OPC_branch_19 0x13 255 #define OPC_RLWIMI 0x14 256 #define OPC_RLWINM 0x15 257 #define OPC_BE 0x16 258 #define OPC_RLWNM 0x17 259 #define OPC_ORI 0x18 260 #define OPC_ORIS 0x19 261 #define OPC_XORI 0x1a 262 #define OPC_XORIS 0x1b 263 #define OPC_ANDI 0x1c 264 #define OPC_ANDIS 0x1d 265 #define OPC_dwe_rot_30 0x1e 266 #define OPC_integer_31 0x1f 267 #define OPC_LWZ 0x20 268 #define OPC_LWZU 0x21 269 #define OPC_LBZ 0x22 270 #define OPC_LBZU 0x23 271 #define OPC_STW 0x24 272 #define OPC_STWU 0x25 273 #define OPC_STB 0x26 274 #define OPC_STBU 0x27 275 #define OPC_LHZ 0x28 276 #define OPC_LHZU 0x29 277 #define OPC_LHA 0x2a 278 #define OPC_LHAU 0x2b 279 #define OPC_STH 0x2c 280 #define OPC_STHU 0x2d 281 #define OPC_LMW 0x2e 282 #define OPC_STMW 0x2f 283 #define OPC_LFS 0x30 284 #define OPC_LFSU 0x31 285 #define OPC_LFD 0x32 286 #define OPC_LFDU 0x33 287 #define OPC_STFS 0x34 288 #define OPC_STFSU 0x35 289 #define OPC_STFD 0x36 290 #define OPC_STFDU 0x37 291 #define OPC_load_st_58 0x3a 292 #define OPC_sp_fp_59 0x3b 293 #define OPC_load_st_62 0x3e 294 #define OPC_dp_fp_63 0x3f 295 296 /* 297 * Opcode 31 sub-types (FP only) 298 */ 299 #define OPC31_TW 0x004 300 #define OPC31_LFSX 0x217 301 #define OPC31_LFSUX 0x237 302 #define OPC31_LFDX 0x257 303 #define OPC31_LFDUX 0x277 304 #define OPC31_STFSX 0x297 305 #define OPC31_STFSUX 0x2b7 306 #define OPC31_STFDX 0x2d7 307 #define OPC31_STFDUX 0x2f7 308 #define OPC31_STFIWX 0x3d7 309 310 /* Mask for all valid indexed FP load/store ops (except stfiwx) */ 311 #define OPC31_FPMASK 0x31f 312 #define OPC31_FPOP 0x217 313 314 /* 315 * Opcode 59 sub-types: 316 */ 317 318 #define OPC59_FDIVS 0x12 319 #define OPC59_FSUBS 0x14 320 #define OPC59_FADDS 0x15 321 #define OPC59_FSQRTS 0x16 322 #define OPC59_FRES 0x18 323 #define OPC59_FMULS 0x19 324 #define OPC59_FMSUBS 0x1c 325 #define OPC59_FMADDS 0x1d 326 #define OPC59_FNMSUBS 0x1e 327 #define OPC59_FNMADDS 0x1f 328 329 /* 330 * Opcode 62 sub-types: 331 */ 332 #define OPC62_LDE 0x0 333 #define OPC62_LDEU 0x1 334 #define OPC62_LFSE 0x4 335 #define OPC62_LFSEU 0x5 336 #define OPC62_LFDE 0x6 337 #define OPC62_LFDEU 0x7 338 #define OPC62_STDE 0x8 339 #define OPC62_STDEU 0x9 340 #define OPC62_STFSE 0xc 341 #define OPC62_STFSEU 0xd 342 #define OPC62_STFDE 0xe 343 #define OPC62_STFDEU 0xf 344 345 /* 346 * Opcode 63 sub-types: 347 * 348 * (The first group are masks....) 349 */ 350 351 #define OPC63M_MASK 0x10 352 #define OPC63M_FDIV 0x12 353 #define OPC63M_FSUB 0x14 354 #define OPC63M_FADD 0x15 355 #define OPC63M_FSQRT 0x16 356 #define OPC63M_FSEL 0x17 357 #define OPC63M_FMUL 0x19 358 #define OPC63M_FRSQRTE 0x1a 359 #define OPC63M_FMSUB 0x1c 360 #define OPC63M_FMADD 0x1d 361 #define OPC63M_FNMSUB 0x1e 362 #define OPC63M_FNMADD 0x1f 363 364 #define OPC63_FCMPU 0x00 365 #define OPC63_FRSP 0x0c 366 #define OPC63_FCTIW 0x0e 367 #define OPC63_FCTIWZ 0x0f 368 #define OPC63_FCMPO 0x20 369 #define OPC63_MTFSB1 0x26 370 #define OPC63_FNEG 0x28 371 #define OPC63_MCRFS 0x40 372 #define OPC63_MTFSB0 0x46 373 #define OPC63_FMR 0x48 374 #define OPC63_MTFSFI 0x86 375 #define OPC63_FNABS 0x88 376 #define OPC63_FABS 0x108 377 #define OPC63_MFFS 0x247 378 #define OPC63_MTFSF 0x2c7 379 #define OPC63_FCTID 0x32e 380 #define OPC63_FCTIDZ 0x32f 381 #define OPC63_FCFID 0x34e 382 383 /* 384 * FPU data types. 385 */ 386 #define FTYPE_LNG -1 /* data = 64-bit signed long integer */ 387 #define FTYPE_INT 0 /* data = 32-bit signed integer */ 388 #define FTYPE_SNG 1 /* data = 32-bit float */ 389 #define FTYPE_DBL 2 /* data = 64-bit double */ 390 #define FTYPE_EXT 3 /* data = 128-bit extended (quad-prec) */ 391 392 /* 393 * FPCSR rounding modes. 394 */ 395 #define FSR_RD_RN 0 /* round to nearest */ 396 #define FSR_RD_RZ 1 /* round towards 0 */ 397 #define FSR_RD_RP 2 /* round towards +inf */ 398 #define FSR_RD_RM 3 /* round towards -inf */ 399
Indexes created Fri Oct 03 02:09:57 GMT 2025