linux-user/arm/nwfpe/extended_cpdo.c

   1 /*
   2     NetWinder Floating Point Emulator
   3     (c) Rebel.COM, 1998,1999
   4
   5     Direct questions, comments to Scott Bambrough <scottb@netwinder.org>
   6
   7     This program is free software; you can redistribute it and/or modify
   8     it under the terms of the GNU General Public License as published by
   9     the Free Software Foundation; either version 2 of the License, or
  10     (at your option) any later version.
  11
  12     This program is distributed in the hope that it will be useful,
  13     but WITHOUT ANY WARRANTY; without even the implied warranty of
  14     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15     GNU General Public License for more details.
  16
  17     You should have received a copy of the GNU General Public License
  18     along with this program; if not, write to the Free Software
  19     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20 */
  21
  22 #include "fpa11.h"
  23 #include "softfloat.h"
  24 #include "fpopcode.h"
  25
  26 floatx80 floatx80_exp(floatx80 Fm);
  27 floatx80 floatx80_ln(floatx80 Fm);
  28 floatx80 floatx80_sin(floatx80 rFm);
  29 floatx80 floatx80_cos(floatx80 rFm);
  30 floatx80 floatx80_arcsin(floatx80 rFm);
  31 floatx80 floatx80_arctan(floatx80 rFm);
  32 floatx80 floatx80_log(floatx80 rFm);
  33 floatx80 floatx80_tan(floatx80 rFm);
  34 floatx80 floatx80_arccos(floatx80 rFm);
  35 floatx80 floatx80_pow(floatx80 rFn,floatx80 rFm);
  36 floatx80 floatx80_pol(floatx80 rFn,floatx80 rFm);
  37
  38 unsigned int ExtendedCPDO(const unsigned int opcode)
  39 {
  40    FPA11 *fpa11 = GET_FPA11();
  41    floatx80 rFm, rFn;
  42    unsigned int Fd, Fm, Fn, nRc = 1;
  43
  44    //printk("ExtendedCPDO(0x%08x)\n",opcode);
  45
  46    Fm = getFm(opcode);
  47    if (CONSTANT_FM(opcode))
  48    {
  49      rFm = getExtendedConstant(Fm);
  50    }
  51    else
  52    {
  53      switch (fpa11->fType[Fm])
  54      {
  55         case typeSingle:
  56           rFm = float32_to_floatx80(fpa11->fpreg[Fm].fSingle, &fpa11->fp_status);
  57         break;
  58
  59         case typeDouble:
  60           rFm = float64_to_floatx80(fpa11->fpreg[Fm].fDouble, &fpa11->fp_status);
  61         break;
  62
  63         case typeExtended:
  64           rFm = fpa11->fpreg[Fm].fExtended;
  65         break;
  66
  67         default: return 0;
  68      }
  69    }
  70
  71    if (!MONADIC_INSTRUCTION(opcode))
  72    {
  73       Fn = getFn(opcode);
  74       switch (fpa11->fType[Fn])
  75       {
  76         case typeSingle:
  77           rFn = float32_to_floatx80(fpa11->fpreg[Fn].fSingle, &fpa11->fp_status);
  78         break;
  79
  80         case typeDouble:
  81           rFn = float64_to_floatx80(fpa11->fpreg[Fn].fDouble, &fpa11->fp_status);
  82         break;
  83
  84         case typeExtended:
  85           rFn = fpa11->fpreg[Fn].fExtended;
  86         break;
  87
  88         default: return 0;
  89       }
  90    }
  91
  92    Fd = getFd(opcode);
  93    switch (opcode & MASK_ARITHMETIC_OPCODE)
  94    {
  95       /* dyadic opcodes */
  96       case ADF_CODE:
  97          fpa11->fpreg[Fd].fExtended = floatx80_add(rFn,rFm, &fpa11->fp_status);
  98       break;
  99
 100       case MUF_CODE:
 101       case FML_CODE:
 102          fpa11->fpreg[Fd].fExtended = floatx80_mul(rFn,rFm, &fpa11->fp_status);
 103       break;
 104
 105       case SUF_CODE:
 106          fpa11->fpreg[Fd].fExtended = floatx80_sub(rFn,rFm, &fpa11->fp_status);
 107       break;
 108
 109       case RSF_CODE:
 110          fpa11->fpreg[Fd].fExtended = floatx80_sub(rFm,rFn, &fpa11->fp_status);
 111       break;
 112
 113       case DVF_CODE:
 114       case FDV_CODE:
 115          fpa11->fpreg[Fd].fExtended = floatx80_div(rFn,rFm, &fpa11->fp_status);
 116       break;
 117
 118       case RDF_CODE:
 119       case FRD_CODE:
 120          fpa11->fpreg[Fd].fExtended = floatx80_div(rFm,rFn, &fpa11->fp_status);
 121       break;
 122
 123 #if 0
 124       case POW_CODE:
 125          fpa11->fpreg[Fd].fExtended = floatx80_pow(rFn,rFm);
 126       break;
 127
 128       case RPW_CODE:
 129          fpa11->fpreg[Fd].fExtended = floatx80_pow(rFm,rFn);
 130       break;
 131 #endif
 132
 133       case RMF_CODE:
 134          fpa11->fpreg[Fd].fExtended = floatx80_rem(rFn,rFm, &fpa11->fp_status);
 135       break;
 136
 137 #if 0
 138       case POL_CODE:
 139          fpa11->fpreg[Fd].fExtended = floatx80_pol(rFn,rFm);
 140       break;
 141 #endif
 142
 143       /* monadic opcodes */
 144       case MVF_CODE:
 145          fpa11->fpreg[Fd].fExtended = rFm;
 146       break;
 147
 148       case MNF_CODE:
 149          rFm.high ^= 0x8000;
 150          fpa11->fpreg[Fd].fExtended = rFm;
 151       break;
 152
 153       case ABS_CODE:
 154          rFm.high &= 0x7fff;
 155          fpa11->fpreg[Fd].fExtended = rFm;
 156       break;
 157
 158       case RND_CODE:
 159       case URD_CODE:
 160          fpa11->fpreg[Fd].fExtended = floatx80_round_to_int(rFm, &fpa11->fp_status);
 161       break;
 162
 163       case SQT_CODE:
 164          fpa11->fpreg[Fd].fExtended = floatx80_sqrt(rFm, &fpa11->fp_status);
 165       break;
 166
 167 #if 0
 168       case LOG_CODE:
 169          fpa11->fpreg[Fd].fExtended = floatx80_log(rFm);
 170       break;
 171
 172       case LGN_CODE:
 173          fpa11->fpreg[Fd].fExtended = floatx80_ln(rFm);
 174       break;
 175
 176       case EXP_CODE:
 177          fpa11->fpreg[Fd].fExtended = floatx80_exp(rFm);
 178       break;
 179
 180       case SIN_CODE:
 181          fpa11->fpreg[Fd].fExtended = floatx80_sin(rFm);
 182       break;
 183
 184       case COS_CODE:
 185          fpa11->fpreg[Fd].fExtended = floatx80_cos(rFm);
 186       break;
 187
 188       case TAN_CODE:
 189          fpa11->fpreg[Fd].fExtended = floatx80_tan(rFm);
 190       break;
 191
 192       case ASN_CODE:
 193          fpa11->fpreg[Fd].fExtended = floatx80_arcsin(rFm);
 194       break;
 195
 196       case ACS_CODE:
 197          fpa11->fpreg[Fd].fExtended = floatx80_arccos(rFm);
 198       break;
 199
 200       case ATN_CODE:
 201          fpa11->fpreg[Fd].fExtended = floatx80_arctan(rFm);
 202       break;
 203 #endif
 204
 205       case NRM_CODE:
 206       break;
 207
 208       default:
 209       {
 210         nRc = 0;
 211       }
 212    }
 213
 214    if (0 != nRc) fpa11->fType[Fd] = typeExtended;
 215    return nRc;
 216 }
 217
 218 #if 0
 219 floatx80 floatx80_exp(floatx80 Fm)
 220 {
 221 //series
 222 }
 223
 224 floatx80 floatx80_ln(floatx80 Fm)
 225 {
 226 //series
 227 }
 228
 229 floatx80 floatx80_sin(floatx80 rFm)
 230 {
 231 //series
 232 }
 233
 234 floatx80 floatx80_cos(floatx80 rFm)
 235 {
 236 //series
 237 }
 238
 239 floatx80 floatx80_arcsin(floatx80 rFm)
 240 {
 241 //series
 242 }
 243
 244 floatx80 floatx80_arctan(floatx80 rFm)
 245 {
 246   //series
 247 }
 248
 249 floatx80 floatx80_log(floatx80 rFm)
 250 {
 251   return floatx80_div(floatx80_ln(rFm),getExtendedConstant(7));
 252 }
 253
 254 floatx80 floatx80_tan(floatx80 rFm)
 255 {
 256   return floatx80_div(floatx80_sin(rFm),floatx80_cos(rFm));
 257 }
 258
 259 floatx80 floatx80_arccos(floatx80 rFm)
 260 {
 261    //return floatx80_sub(halfPi,floatx80_arcsin(rFm));
 262 }
 263
 264 floatx80 floatx80_pow(floatx80 rFn,floatx80 rFm)
 265 {
 266   return floatx80_exp(floatx80_mul(rFm,floatx80_ln(rFn)));
 267 }
 268
 269 floatx80 floatx80_pol(floatx80 rFn,floatx80 rFm)
 270 {
 271   return floatx80_arctan(floatx80_div(rFn,rFm));
 272 }
 273 #endif