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-rw-r--r--arch/arm/nwfpe/extended_cpdo.c276
1 files changed, 276 insertions, 0 deletions
diff --git a/arch/arm/nwfpe/extended_cpdo.c b/arch/arm/nwfpe/extended_cpdo.c
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index 000000000..1c5c66180
--- /dev/null
+++ b/arch/arm/nwfpe/extended_cpdo.c
@@ -0,0 +1,276 @@
+/*
+ NetWinder Floating Point Emulator
+ (c) Corel Computer Corporation, 1998
+
+ Direct questions, comments to Scott Bambrough <scottb@corelcomputer.com>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "config.h"
+#include "softfloat.h"
+#include "fpopcode.h"
+#include "fpa11.h"
+
+floatx80 getExtendedConstant(unsigned int);
+
+floatx80 floatx80_exp(floatx80 Fm);
+floatx80 floatx80_ln(floatx80 Fm);
+floatx80 floatx80_sin(floatx80 rFm);
+floatx80 floatx80_cos(floatx80 rFm);
+floatx80 floatx80_arcsin(floatx80 rFm);
+floatx80 floatx80_arctan(floatx80 rFm);
+floatx80 floatx80_log(floatx80 rFm);
+floatx80 floatx80_tan(floatx80 rFm);
+floatx80 floatx80_arccos(floatx80 rFm);
+floatx80 floatx80_pow(floatx80 rFn,floatx80 rFm);
+floatx80 floatx80_pol(floatx80 rFn,floatx80 rFm);
+
+unsigned int ExtendedCPDO(const unsigned int opcode)
+{
+ floatx80 rFm, rFn;
+ unsigned int Fd, Fm, Fn, nRc = 1;
+
+ //fp_printk("ExtendedCPDO(0x%08x)\n",opcode);
+
+ Fm = getFm(opcode);
+ if (CONSTANT_FM(opcode))
+ {
+ rFm = getExtendedConstant(Fm);
+ }
+ else
+ {
+ switch (fpa11->fpreg[Fm].fType)
+ {
+ case typeSingle:
+ rFm = float32_to_floatx80(fpa11->fpreg[Fm].fValue.fSingle);
+ break;
+
+ case typeDouble:
+ rFm = float64_to_floatx80(fpa11->fpreg[Fm].fValue.fDouble);
+ break;
+
+ case typeExtended:
+ rFm = fpa11->fpreg[Fm].fValue.fExtended;
+ break;
+
+ default: return 0;
+ }
+ }
+
+ if (!MONADIC_INSTRUCTION(opcode))
+ {
+ Fn = getFn(opcode);
+ switch (fpa11->fpreg[Fn].fType)
+ {
+ case typeSingle:
+ rFn = float32_to_floatx80(fpa11->fpreg[Fn].fValue.fSingle);
+ break;
+
+ case typeDouble:
+ rFn = float64_to_floatx80(fpa11->fpreg[Fn].fValue.fDouble);
+ break;
+
+ case typeExtended:
+ rFn = fpa11->fpreg[Fn].fValue.fExtended;
+ break;
+
+ default: return 0;
+ }
+ }
+
+ Fd = getFd(opcode);
+ switch (opcode & MASK_ARITHMETIC_OPCODE)
+ {
+ /* dyadic opcodes */
+ case ADF_CODE:
+ fpa11->fpreg[Fd].fValue.fExtended = floatx80_add(rFn,rFm);
+ break;
+
+ case MUF_CODE:
+ case FML_CODE:
+ fpa11->fpreg[Fd].fValue.fExtended = floatx80_mul(rFn,rFm);
+ break;
+
+ case SUF_CODE:
+ fpa11->fpreg[Fd].fValue.fExtended = floatx80_sub(rFn,rFm);
+ break;
+
+ case RSF_CODE:
+ fpa11->fpreg[Fd].fValue.fExtended = floatx80_sub(rFm,rFn);
+ break;
+
+ case DVF_CODE:
+ case FDV_CODE:
+ fpa11->fpreg[Fd].fValue.fExtended = floatx80_div(rFn,rFm);
+ break;
+
+ case RDF_CODE:
+ case FRD_CODE:
+ fpa11->fpreg[Fd].fValue.fExtended = floatx80_div(rFm,rFn);
+ break;
+
+#if 0
+ case POW_CODE:
+ fpa11->fpreg[Fd].fValue.fExtended = floatx80_pow(rFn,rFm);
+ break;
+
+ case RPW_CODE:
+ fpa11->fpreg[Fd].fValue.fExtended = floatx80_pow(rFm,rFn);
+ break;
+#endif
+
+ case RMF_CODE:
+ fpa11->fpreg[Fd].fValue.fExtended = floatx80_rem(rFn,rFm);
+ break;
+
+#if 0
+ case POL_CODE:
+ fpa11->fpreg[Fd].fValue.fExtended = floatx80_pol(rFn,rFm);
+ break;
+#endif
+
+ /* monadic opcodes */
+ case MVF_CODE:
+ fpa11->fpreg[Fd].fValue.fExtended = rFm;
+ break;
+
+ case MNF_CODE:
+ rFm.high ^= 0x8000;
+ fpa11->fpreg[Fd].fValue.fExtended = rFm;
+ break;
+
+ case ABS_CODE:
+ rFm.high &= 0x7fff;
+ fpa11->fpreg[Fd].fValue.fExtended = rFm;
+ break;
+
+ case RND_CODE:
+ case URD_CODE:
+ fpa11->fpreg[Fd].fValue.fExtended =
+ int32_to_floatx80(floatx80_to_int32(rFm));
+ break;
+
+ case SQT_CODE:
+ fpa11->fpreg[Fd].fValue.fExtended = floatx80_sqrt(rFm);
+ break;
+
+#if 0
+ case LOG_CODE:
+ fpa11->fpreg[Fd].fValue.fExtended = floatx80_log(rFm);
+ break;
+
+ case LGN_CODE:
+ fpa11->fpreg[Fd].fValue.fExtended = floatx80_ln(rFm);
+ break;
+
+ case EXP_CODE:
+ fpa11->fpreg[Fd].fValue.fExtended = floatx80_exp(rFm);
+ break;
+
+ case SIN_CODE:
+ fpa11->fpreg[Fd].fValue.fExtended = floatx80_sin(rFm);
+ break;
+
+ case COS_CODE:
+ fpa11->fpreg[Fd].fValue.fExtended = floatx80_cos(rFm);
+ break;
+
+ case TAN_CODE:
+ fpa11->fpreg[Fd].fValue.fExtended = floatx80_tan(rFm);
+ break;
+
+ case ASN_CODE:
+ fpa11->fpreg[Fd].fValue.fExtended = floatx80_arcsin(rFm);
+ break;
+
+ case ACS_CODE:
+ fpa11->fpreg[Fd].fValue.fExtended = floatx80_arccos(rFm);
+ break;
+
+ case ATN_CODE:
+ fpa11->fpreg[Fd].fValue.fExtended = floatx80_arctan(rFm);
+ break;
+#endif
+
+ case NRM_CODE:
+ break;
+
+ default:
+ {
+ nRc = 0;
+ }
+ }
+
+ if (0 != nRc) fpa11->fpreg[Fd].fType = typeExtended;
+ return nRc;
+}
+
+#if 0
+floatx80 floatx80_exp(floatx80 Fm)
+{
+//series
+}
+
+floatx80 floatx80_ln(floatx80 Fm)
+{
+//series
+}
+
+floatx80 floatx80_sin(floatx80 rFm)
+{
+//series
+}
+
+floatx80 floatx80_cos(floatx80 rFm)
+{
+//series
+}
+
+floatx80 floatx80_arcsin(floatx80 rFm)
+{
+//series
+}
+
+floatx80 floatx80_arctan(floatx80 rFm)
+{
+ //series
+}
+
+floatx80 floatx80_log(floatx80 rFm)
+{
+ return floatx80_div(floatx80_ln(rFm),getExtendedConstant(7));
+}
+
+floatx80 floatx80_tan(floatx80 rFm)
+{
+ return floatx80_div(floatx80_sin(rFm),floatx80_cos(rFm));
+}
+
+floatx80 floatx80_arccos(floatx80 rFm)
+{
+ //return floatx80_sub(halfPi,floatx80_arcsin(rFm));
+}
+
+floatx80 floatx80_pow(floatx80 rFn,floatx80 rFm)
+{
+ return floatx80_exp(floatx80_mul(rFm,floatx80_ln(rFn)));
+}
+
+floatx80 floatx80_pol(floatx80 rFn,floatx80 rFm)
+{
+ return floatx80_arctan(floatx80_div(rFn,rFm));
+}
+#endif