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Annotation of qemu/linux-user/arm/nwfpe/single_cpdo.c, revision 1.1

1.1     ! root        1: /*
        !             2:     NetWinder Floating Point Emulator
        !             3:     (c) Rebel.COM, 1998,1999
        !             4: 
        !             5:     Direct questions, comments to Scott Bambrough <[email protected]>
        !             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: float32 float32_exp(float32 Fm);
        !            27: float32 float32_ln(float32 Fm);
        !            28: float32 float32_sin(float32 rFm);
        !            29: float32 float32_cos(float32 rFm);
        !            30: float32 float32_arcsin(float32 rFm);
        !            31: float32 float32_arctan(float32 rFm);
        !            32: float32 float32_log(float32 rFm);
        !            33: float32 float32_tan(float32 rFm);
        !            34: float32 float32_arccos(float32 rFm);
        !            35: float32 float32_pow(float32 rFn,float32 rFm);
        !            36: float32 float32_pol(float32 rFn,float32 rFm);
        !            37: 
        !            38: unsigned int SingleCPDO(const unsigned int opcode)
        !            39: {
        !            40:    FPA11 *fpa11 = GET_FPA11();
        !            41:    float32 rFm, rFn = float32_zero;
        !            42:    unsigned int Fd, Fm, Fn, nRc = 1;
        !            43: 
        !            44:    Fm = getFm(opcode);
        !            45:    if (CONSTANT_FM(opcode))
        !            46:    {
        !            47:      rFm = getSingleConstant(Fm);
        !            48:    }
        !            49:    else
        !            50:    {
        !            51:      switch (fpa11->fType[Fm])
        !            52:      {
        !            53:         case typeSingle:
        !            54:           rFm = fpa11->fpreg[Fm].fSingle;
        !            55:         break;
        !            56: 
        !            57:         default: return 0;
        !            58:      }
        !            59:    }
        !            60: 
        !            61:    if (!MONADIC_INSTRUCTION(opcode))
        !            62:    {
        !            63:       Fn = getFn(opcode);
        !            64:       switch (fpa11->fType[Fn])
        !            65:       {
        !            66:         case typeSingle:
        !            67:           rFn = fpa11->fpreg[Fn].fSingle;
        !            68:         break;
        !            69: 
        !            70:         default: return 0;
        !            71:       }
        !            72:    }
        !            73: 
        !            74:    Fd = getFd(opcode);
        !            75:    switch (opcode & MASK_ARITHMETIC_OPCODE)
        !            76:    {
        !            77:       /* dyadic opcodes */
        !            78:       case ADF_CODE:
        !            79:          fpa11->fpreg[Fd].fSingle = float32_add(rFn,rFm, &fpa11->fp_status);
        !            80:       break;
        !            81: 
        !            82:       case MUF_CODE:
        !            83:       case FML_CODE:
        !            84:         fpa11->fpreg[Fd].fSingle = float32_mul(rFn,rFm, &fpa11->fp_status);
        !            85:       break;
        !            86: 
        !            87:       case SUF_CODE:
        !            88:          fpa11->fpreg[Fd].fSingle = float32_sub(rFn,rFm, &fpa11->fp_status);
        !            89:       break;
        !            90: 
        !            91:       case RSF_CODE:
        !            92:          fpa11->fpreg[Fd].fSingle = float32_sub(rFm,rFn, &fpa11->fp_status);
        !            93:       break;
        !            94: 
        !            95:       case DVF_CODE:
        !            96:       case FDV_CODE:
        !            97:          fpa11->fpreg[Fd].fSingle = float32_div(rFn,rFm, &fpa11->fp_status);
        !            98:       break;
        !            99: 
        !           100:       case RDF_CODE:
        !           101:       case FRD_CODE:
        !           102:          fpa11->fpreg[Fd].fSingle = float32_div(rFm,rFn, &fpa11->fp_status);
        !           103:       break;
        !           104: 
        !           105: #if 0
        !           106:       case POW_CODE:
        !           107:          fpa11->fpreg[Fd].fSingle = float32_pow(rFn,rFm);
        !           108:       break;
        !           109: 
        !           110:       case RPW_CODE:
        !           111:          fpa11->fpreg[Fd].fSingle = float32_pow(rFm,rFn);
        !           112:       break;
        !           113: #endif
        !           114: 
        !           115:       case RMF_CODE:
        !           116:          fpa11->fpreg[Fd].fSingle = float32_rem(rFn,rFm, &fpa11->fp_status);
        !           117:       break;
        !           118: 
        !           119: #if 0
        !           120:       case POL_CODE:
        !           121:          fpa11->fpreg[Fd].fSingle = float32_pol(rFn,rFm);
        !           122:       break;
        !           123: #endif
        !           124: 
        !           125:       /* monadic opcodes */
        !           126:       case MVF_CODE:
        !           127:          fpa11->fpreg[Fd].fSingle = rFm;
        !           128:       break;
        !           129: 
        !           130:       case MNF_CODE:
        !           131:          fpa11->fpreg[Fd].fSingle = float32_chs(rFm);
        !           132:       break;
        !           133: 
        !           134:       case ABS_CODE:
        !           135:          fpa11->fpreg[Fd].fSingle = float32_abs(rFm);
        !           136:       break;
        !           137: 
        !           138:       case RND_CODE:
        !           139:       case URD_CODE:
        !           140:          fpa11->fpreg[Fd].fSingle = float32_round_to_int(rFm, &fpa11->fp_status);
        !           141:       break;
        !           142: 
        !           143:       case SQT_CODE:
        !           144:          fpa11->fpreg[Fd].fSingle = float32_sqrt(rFm, &fpa11->fp_status);
        !           145:       break;
        !           146: 
        !           147: #if 0
        !           148:       case LOG_CODE:
        !           149:          fpa11->fpreg[Fd].fSingle = float32_log(rFm);
        !           150:       break;
        !           151: 
        !           152:       case LGN_CODE:
        !           153:          fpa11->fpreg[Fd].fSingle = float32_ln(rFm);
        !           154:       break;
        !           155: 
        !           156:       case EXP_CODE:
        !           157:          fpa11->fpreg[Fd].fSingle = float32_exp(rFm);
        !           158:       break;
        !           159: 
        !           160:       case SIN_CODE:
        !           161:          fpa11->fpreg[Fd].fSingle = float32_sin(rFm);
        !           162:       break;
        !           163: 
        !           164:       case COS_CODE:
        !           165:          fpa11->fpreg[Fd].fSingle = float32_cos(rFm);
        !           166:       break;
        !           167: 
        !           168:       case TAN_CODE:
        !           169:          fpa11->fpreg[Fd].fSingle = float32_tan(rFm);
        !           170:       break;
        !           171: 
        !           172:       case ASN_CODE:
        !           173:          fpa11->fpreg[Fd].fSingle = float32_arcsin(rFm);
        !           174:       break;
        !           175: 
        !           176:       case ACS_CODE:
        !           177:          fpa11->fpreg[Fd].fSingle = float32_arccos(rFm);
        !           178:       break;
        !           179: 
        !           180:       case ATN_CODE:
        !           181:          fpa11->fpreg[Fd].fSingle = float32_arctan(rFm);
        !           182:       break;
        !           183: #endif
        !           184: 
        !           185:       case NRM_CODE:
        !           186:       break;
        !           187: 
        !           188:       default:
        !           189:       {
        !           190:         nRc = 0;
        !           191:       }
        !           192:    }
        !           193: 
        !           194:    if (0 != nRc) fpa11->fType[Fd] = typeSingle;
        !           195:    return nRc;
        !           196: }
        !           197: 
        !           198: #if 0
        !           199: float32 float32_exp(float32 Fm)
        !           200: {
        !           201: //series
        !           202: }
        !           203: 
        !           204: float32 float32_ln(float32 Fm)
        !           205: {
        !           206: //series
        !           207: }
        !           208: 
        !           209: float32 float32_sin(float32 rFm)
        !           210: {
        !           211: //series
        !           212: }
        !           213: 
        !           214: float32 float32_cos(float32 rFm)
        !           215: {
        !           216: //series
        !           217: }
        !           218: 
        !           219: float32 float32_arcsin(float32 rFm)
        !           220: {
        !           221: //series
        !           222: }
        !           223: 
        !           224: float32 float32_arctan(float32 rFm)
        !           225: {
        !           226:   //series
        !           227: }
        !           228: 
        !           229: float32 float32_arccos(float32 rFm)
        !           230: {
        !           231:    //return float32_sub(halfPi,float32_arcsin(rFm));
        !           232: }
        !           233: 
        !           234: float32 float32_log(float32 rFm)
        !           235: {
        !           236:   return float32_div(float32_ln(rFm),getSingleConstant(7));
        !           237: }
        !           238: 
        !           239: float32 float32_tan(float32 rFm)
        !           240: {
        !           241:   return float32_div(float32_sin(rFm),float32_cos(rFm));
        !           242: }
        !           243: 
        !           244: float32 float32_pow(float32 rFn,float32 rFm)
        !           245: {
        !           246:   return float32_exp(float32_mul(rFm,float32_ln(rFn)));
        !           247: }
        !           248: 
        !           249: float32 float32_pol(float32 rFn,float32 rFm)
        !           250: {
        !           251:   return float32_arctan(float32_div(rFn,rFm));
        !           252: }
        !           253: #endif

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