sys/arch/powerpc/include/instr.h

   1 /*      $NetBSD: instr.h,v 1.1.26.3 2004/09/21 13:20:41 skrll 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. Neither the name of the University nor the names of its contributors
  25  *    may be used to endorse or promote products derived from this software
  26  *    without specific prior written permission.
  27  *
  28  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  29  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  30  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  31  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  32  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  33  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  34  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  35  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  36  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  37  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  38  * SUCH DAMAGE.
  39  *
  40  *      @(#)instr.h     8.1 (Berkeley) 6/11/93
  41  */
  42
  43 /*
  44  * An instruction.
  45  */
  46 union instr {
  47         int     i_int;                  /* as a whole */
  48
  49
  50         /*
  51          * Any instruction type.
  52          */
  53         struct {
  54                 u_int   i_opcd:6;       /* first-level decode */
  55                 u_int   :25;
  56                 u_int   i_rc:1;
  57         } i_any;
  58
  59         /*
  60          * Format A
  61          */
  62         struct {
  63                 u_int   i_opcd:6;
  64                 u_int   i_frt:5;
  65                 u_int   i_fra:5;
  66                 u_int   i_frb:5;
  67                 u_int   i_frc:5;
  68                 u_int   i_xo:5;
  69                 u_int   i_rc:1;
  70         } i_a;
  71
  72         /*
  73          * Format B
  74          */
  75         struct {
  76                 u_int   i_opcd:6;
  77                 int     i_bo:5;
  78                 int     i_bi:5;
  79                 int     i_bd:14;
  80                 int     i_aa:1;
  81                 int     i_lk:1;
  82         } i_b;
  83
  84         /*
  85          * Format D
  86          */
  87         struct {
  88                 u_int   i_opcd:6;
  89                 u_int   i_rs:5;
  90                 u_int   i_ra:5;
  91                 int     i_d:16;
  92         } i_d;
  93
  94         /*
  95          * Format DE
  96          */
  97         struct {
  98                 u_int   i_opcd:6;
  99                 u_int   i_rs:5;
 100                 u_int   i_ra:5;
 101                 int     i_d:12;
 102                 u_int   i_xo:4;
 103         } i_de;
 104
 105         /*
 106          * Format I
 107          */
 108         struct {
 109                 u_int   i_opcd:6;
 110                 int     i_li:24;
 111                 int     i_aa:1;
 112                 int     i_lk:1;
 113         } i_i;
 114
 115         /*
 116          * Format M
 117          */
 118         struct {
 119                 u_int   i_opcd:6;
 120                 u_int   i_rs:5;
 121                 u_int   i_ra:5;
 122                 u_int   i_rb:5;
 123                 int     i_mb:5;
 124                 int     i_me:5;
 125                 u_int   i_rc:1;
 126         } i_m;
 127
 128         /*
 129          * Format MD
 130          */
 131         struct {
 132                 u_int   i_opcd:6;
 133                 u_int   i_rs:5;
 134                 u_int   i_ra:5;
 135                 u_int   i_rb:5;
 136                 int     i_sh1_5:5;
 137                 int     i_mb:6;
 138                 u_int   i_xo:3;
 139                 int     i_sh0:2;
 140                 u_int   i_rc:1;
 141         } i_md;
 142
 143         /*
 144          * Format MDS
 145          */
 146         struct {
 147                 u_int   i_opcd:6;
 148                 u_int   i_rs:5;
 149                 u_int   i_ra:5;
 150                 u_int   i_rb:5;
 151                 int     i_sh:5;
 152                 int     i_mb:6;
 153                 u_int   i_xo:4;
 154                 u_int   i_rc:1;
 155         } i_mds;
 156
 157
 158         /*
 159          * Format S
 160          */
 161         struct {
 162                 u_int   i_opcd:6;
 163                 int     :24;
 164                 int     i_i:1;
 165                 int     :1;
 166         } i_s;
 167
 168         /*
 169          * Format X
 170          */
 171         struct {
 172                 u_int   i_opcd:6;
 173                 u_int   i_rs:5;
 174                 u_int   i_ra:5;
 175                 u_int   i_rb:5;
 176                 u_int   i_xo:10;
 177                 u_int   i_rc:1;
 178         } i_x;
 179
 180         /*
 181          * Format XFL
 182          */
 183         struct {
 184                 u_int   i_opcd:6;
 185                 int     :1;
 186                 int     i_flm:8;
 187                 int     :1;
 188                 int     i_frb:5;
 189                 u_int   i_xo:10;
 190                 int     :1;
 191         } i_xfl;
 192
 193         /*
 194          * Format XFX
 195          */
 196         struct {
 197                 u_int   i_opcd:6;
 198                 int     i_dcrn:10;
 199                 u_int   i_xo:10;
 200                 int     :1;
 201         } i_xfx;
 202
 203         /*
 204          * Format XL
 205          */
 206         struct {
 207                 u_int   i_opcd:6;
 208                 int     i_bt:5;
 209                 int     i_ba:5;
 210                 int     i_bb:5;
 211                 u_int   i_xo:10;
 212                 int     i_lk:1;
 213         } i_xl;
 214
 215         /*
 216          * Format XS
 217          */
 218         struct {
 219                 u_int   i_opcd:6;
 220                 u_int   i_rs:5;
 221                 u_int   i_ra:5;
 222                 int     i_sh0_4:5;
 223                 u_int   i_xo:9;
 224                 int     i_sh5:1;
 225                 u_int   i_rc:1;
 226         } i_xs;
 227
 228 };
 229
 230 #define i_rt    i_rs
 231
 232 /*
 233  * Primary opcode numbers:
 234  */
 235
 236 #define OPC_TDI         0x02
 237 #define OPC_TWI         0x03
 238 #define OPC_MULLI       0x07
 239 #define OPC_SUBFIC      0x08
 240 #define OPC_BCE         0x09
 241 #define OPC_CMPLI       0x0a
 242 #define OPC_CMPI        0x0b
 243 #define OPC_ADDIC       0x0c
 244 #define OPC_ADDIC_DOT   0x0d
 245 #define OPC_ADDI        0x0e
 246 #define OPC_ADDIS       0x0f
 247 #define OPC_BC          0x10
 248 #define OPC_SC          0x11
 249 #define OPC_B           0x12
 250 #define OPC_branch_19   0x13
 251 #define OPC_RLWIMI      0x14
 252 #define OPC_RLWINM      0x15
 253 #define OPC_BE          0x16
 254 #define OPC_RLWNM       0x17
 255 #define OPC_ORI         0x18
 256 #define OPC_ORIS        0x19
 257 #define OPC_XORI        0x1a
 258 #define OPC_XORIS       0x1b
 259 #define OPC_ANDI        0x1c
 260 #define OPC_ANDIS       0x1d
 261 #define OPC_dwe_rot_30  0x1e
 262 #define OPC_integer_31  0x1f
 263 #define OPC_LWZ         0x20
 264 #define OPC_LWZU        0x21
 265 #define OPC_LBZ         0x22
 266 #define OPC_LBZU        0x23
 267 #define OPC_STW         0x24
 268 #define OPC_STWU        0x25
 269 #define OPC_STB         0x26
 270 #define OPC_STBU        0x27
 271 #define OPC_LHZ         0x28
 272 #define OPC_LHZU        0x29
 273 #define OPC_LHA         0x2a
 274 #define OPC_LHAU        0x2b
 275 #define OPC_STH         0x2c
 276 #define OPC_STHU        0x2d
 277 #define OPC_LMW         0x2e
 278 #define OPC_STMW        0x2f
 279 #define OPC_LFS         0x30
 280 #define OPC_LFSU        0x31
 281 #define OPC_LFD         0x32
 282 #define OPC_LFDU        0x33
 283 #define OPC_STFS        0x34
 284 #define OPC_STFSU       0x35
 285 #define OPC_STFD        0x36
 286 #define OPC_STFDU       0x37
 287 #define OPC_load_st_58  0x3a
 288 #define OPC_sp_fp_59    0x3b
 289 #define OPC_load_st_62  0x3e
 290 #define OPC_dp_fp_63    0x3f
 291
 292 /*
 293  * Opcode 31 sub-types (FP only)
 294  */
 295 #define OPC31_TW        0x004
 296 #define OPC31_LFSX      0x217
 297 #define OPC31_LFSUX     0x237
 298 #define OPC31_LFDX      0x257
 299 #define OPC31_LFDUX     0x277
 300 #define OPC31_STFSX     0x297
 301 #define OPC31_STFSUX    0x2b7
 302 #define OPC31_STFDX     0x2d7
 303 #define OPC31_STFDUX    0x2f7
 304 #define OPC31_STFIWX    0x3d7
 305
 306 /* Mask for all valid indexed FP load/store ops (except stfiwx) */
 307 #define OPC31_FPMASK    0x31f
 308 #define OPC31_FPOP      0x217
 309
 310 /*
 311  * Opcode 59 sub-types:
 312  */
 313
 314 #define OPC59_FDIVS     0x12
 315 #define OPC59_FSUBS     0x14
 316 #define OPC59_FADDS     0x15
 317 #define OPC59_FSQRTS    0x16
 318 #define OPC59_FRES      0x18
 319 #define OPC59_FMULS     0x19
 320 #define OPC59_FMSUBS    0x1c
 321 #define OPC59_FMADDS    0x1d
 322 #define OPC59_FNMSUBS   0x1e
 323 #define OPC59_FNMADDS   0x1f
 324
 325 /*
 326  * Opcode 62 sub-types:
 327  */
 328 #define OPC62_LDE       0x0
 329 #define OPC62_LDEU      0x1
 330 #define OPC62_LFSE      0x4
 331 #define OPC62_LFSEU     0x5
 332 #define OPC62_LFDE      0x6
 333 #define OPC62_LFDEU     0x7
 334 #define OPC62_STDE      0x8
 335 #define OPC62_STDEU     0x9
 336 #define OPC62_STFSE     0xc
 337 #define OPC62_STFSEU    0xd
 338 #define OPC62_STFDE     0xe
 339 #define OPC62_STFDEU    0xf
 340
 341 /*
 342  * Opcode 63 sub-types:
 343  *
 344  * (The first group are masks....)
 345  */
 346
 347 #define OPC63M_MASK     0x10
 348 #define OPC63M_FDIV     0x12
 349 #define OPC63M_FSUB     0x14
 350 #define OPC63M_FADD     0x15
 351 #define OPC63M_FSQRT    0x16
 352 #define OPC63M_FSEL     0x17
 353 #define OPC63M_FMUL     0x19
 354 #define OPC63M_FRSQRTE  0x1a
 355 #define OPC63M_FMSUB    0x1c
 356 #define OPC63M_FMADD    0x1d
 357 #define OPC63M_FNMSUB   0x1e
 358 #define OPC63M_FNMADD   0x1f
 359
 360 #define OPC63_FCMPU     0x00
 361 #define OPC63_FRSP      0x0c
 362 #define OPC63_FCTIW     0x0e
 363 #define OPC63_FCTIWZ    0x0f
 364 #define OPC63_FCMPO     0x20
 365 #define OPC63_MTFSB1    0x26
 366 #define OPC63_FNEG      0x28
 367 #define OPC63_MCRFS     0x40
 368 #define OPC63_MTFSB0    0x46
 369 #define OPC63_FMR       0x48
 370 #define OPC63_MTFSFI    0x86
 371 #define OPC63_FNABS     0x88
 372 #define OPC63_FABS      0x108
 373 #define OPC63_MFFS      0x247
 374 #define OPC63_MTFSF     0x2c7
 375 #define OPC63_FCTID     0x32e
 376 #define OPC63_FCTIDZ    0x32f
 377 #define OPC63_FCFID     0x34e
 378
 379 /*
 380  * FPU data types.
 381  */
 382 #define FTYPE_LNG       -1      /* data = 64-bit signed long integer */
 383 #define FTYPE_INT       0       /* data = 32-bit signed integer */
 384 #define FTYPE_SNG       1       /* data = 32-bit float */
 385 #define FTYPE_DBL       2       /* data = 64-bit double */
 386
 387 /*
 388  * FPCSR rounding modes.
 389  */
 390 #define   FSR_RD_RN     0               /* round to nearest */
 391 #define   FSR_RD_RZ     1               /* round towards 0 */
 392 #define   FSR_RD_RP     2               /* round towards +inf */
 393 #define   FSR_RD_RM     3               /* round towards -inf */