diff options
Diffstat (limited to 'arch/arm26/nwfpe/fpa11_cpdo.c')
-rw-r--r-- | arch/arm26/nwfpe/fpa11_cpdo.c | 117 |
1 files changed, 0 insertions, 117 deletions
diff --git a/arch/arm26/nwfpe/fpa11_cpdo.c b/arch/arm26/nwfpe/fpa11_cpdo.c deleted file mode 100644 index 343a6b9..0000000 --- a/arch/arm26/nwfpe/fpa11_cpdo.c +++ /dev/null @@ -1,117 +0,0 @@ -/* - NetWinder Floating Point Emulator - (c) Rebel.COM, 1998,1999 - - Direct questions, comments to Scott Bambrough <scottb@netwinder.org> - - 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 "fpa11.h" -#include "fpopcode.h" - -unsigned int SingleCPDO(const unsigned int opcode); -unsigned int DoubleCPDO(const unsigned int opcode); -unsigned int ExtendedCPDO(const unsigned int opcode); - -unsigned int EmulateCPDO(const unsigned int opcode) -{ - FPA11 *fpa11 = GET_FPA11(); - unsigned int Fd, nType, nDest, nRc = 1; - - //printk("EmulateCPDO(0x%08x)\n",opcode); - - /* Get the destination size. If not valid let Linux perform - an invalid instruction trap. */ - nDest = getDestinationSize(opcode); - if (typeNone == nDest) return 0; - - SetRoundingMode(opcode); - - /* Compare the size of the operands in Fn and Fm. - Choose the largest size and perform operations in that size, - in order to make use of all the precision of the operands. - If Fm is a constant, we just grab a constant of a size - matching the size of the operand in Fn. */ - if (MONADIC_INSTRUCTION(opcode)) - nType = nDest; - else - nType = fpa11->fType[getFn(opcode)]; - - if (!CONSTANT_FM(opcode)) - { - register unsigned int Fm = getFm(opcode); - if (nType < fpa11->fType[Fm]) - { - nType = fpa11->fType[Fm]; - } - } - - switch (nType) - { - case typeSingle : nRc = SingleCPDO(opcode); break; - case typeDouble : nRc = DoubleCPDO(opcode); break; - case typeExtended : nRc = ExtendedCPDO(opcode); break; - default : nRc = 0; - } - - /* If the operation succeeded, check to see if the result in the - destination register is the correct size. If not force it - to be. */ - Fd = getFd(opcode); - nType = fpa11->fType[Fd]; - if ((0 != nRc) && (nDest != nType)) - { - switch (nDest) - { - case typeSingle: - { - if (typeDouble == nType) - fpa11->fpreg[Fd].fSingle = - float64_to_float32(fpa11->fpreg[Fd].fDouble); - else - fpa11->fpreg[Fd].fSingle = - floatx80_to_float32(fpa11->fpreg[Fd].fExtended); - } - break; - - case typeDouble: - { - if (typeSingle == nType) - fpa11->fpreg[Fd].fDouble = - float32_to_float64(fpa11->fpreg[Fd].fSingle); - else - fpa11->fpreg[Fd].fDouble = - floatx80_to_float64(fpa11->fpreg[Fd].fExtended); - } - break; - - case typeExtended: - { - if (typeSingle == nType) - fpa11->fpreg[Fd].fExtended = - float32_to_floatx80(fpa11->fpreg[Fd].fSingle); - else - fpa11->fpreg[Fd].fExtended = - float64_to_floatx80(fpa11->fpreg[Fd].fDouble); - } - break; - } - - fpa11->fType[Fd] = nDest; - } - - return nRc; -} |