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Diffstat (limited to 'target-arm/nwfpe/fpopcode.c')
| -rw-r--r-- | target-arm/nwfpe/fpopcode.c | 148 |
1 files changed, 0 insertions, 148 deletions
diff --git a/target-arm/nwfpe/fpopcode.c b/target-arm/nwfpe/fpopcode.c deleted file mode 100644 index d29e913..0000000 --- a/target-arm/nwfpe/fpopcode.c +++ /dev/null @@ -1,148 +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 "softfloat.h" -#include "fpopcode.h" -#include "fpsr.h" -//#include "fpmodule.h" -//#include "fpmodule.inl" - -const floatx80 floatx80Constant[] = { - { 0x0000000000000000ULL, 0x0000}, /* extended 0.0 */ - { 0x8000000000000000ULL, 0x3fff}, /* extended 1.0 */ - { 0x8000000000000000ULL, 0x4000}, /* extended 2.0 */ - { 0xc000000000000000ULL, 0x4000}, /* extended 3.0 */ - { 0x8000000000000000ULL, 0x4001}, /* extended 4.0 */ - { 0xa000000000000000ULL, 0x4001}, /* extended 5.0 */ - { 0x8000000000000000ULL, 0x3ffe}, /* extended 0.5 */ - { 0xa000000000000000ULL, 0x4002} /* extended 10.0 */ -}; - -const float64 float64Constant[] = { - 0x0000000000000000ULL, /* double 0.0 */ - 0x3ff0000000000000ULL, /* double 1.0 */ - 0x4000000000000000ULL, /* double 2.0 */ - 0x4008000000000000ULL, /* double 3.0 */ - 0x4010000000000000ULL, /* double 4.0 */ - 0x4014000000000000ULL, /* double 5.0 */ - 0x3fe0000000000000ULL, /* double 0.5 */ - 0x4024000000000000ULL /* double 10.0 */ -}; - -const float32 float32Constant[] = { - 0x00000000, /* single 0.0 */ - 0x3f800000, /* single 1.0 */ - 0x40000000, /* single 2.0 */ - 0x40400000, /* single 3.0 */ - 0x40800000, /* single 4.0 */ - 0x40a00000, /* single 5.0 */ - 0x3f000000, /* single 0.5 */ - 0x41200000 /* single 10.0 */ -}; - -unsigned int getTransferLength(const unsigned int opcode) -{ - unsigned int nRc; - - switch (opcode & MASK_TRANSFER_LENGTH) - { - case 0x00000000: nRc = 1; break; /* single precision */ - case 0x00008000: nRc = 2; break; /* double precision */ - case 0x00400000: nRc = 3; break; /* extended precision */ - default: nRc = 0; - } - - return(nRc); -} - -unsigned int getRegisterCount(const unsigned int opcode) -{ - unsigned int nRc; - - switch (opcode & MASK_REGISTER_COUNT) - { - case 0x00000000: nRc = 4; break; - case 0x00008000: nRc = 1; break; - case 0x00400000: nRc = 2; break; - case 0x00408000: nRc = 3; break; - default: nRc = 0; - } - - return(nRc); -} - -unsigned int getRoundingPrecision(const unsigned int opcode) -{ - unsigned int nRc; - - switch (opcode & MASK_ROUNDING_PRECISION) - { - case 0x00000000: nRc = 1; break; - case 0x00000080: nRc = 2; break; - case 0x00080000: nRc = 3; break; - default: nRc = 0; - } - - return(nRc); -} - -unsigned int getDestinationSize(const unsigned int opcode) -{ - unsigned int nRc; - - switch (opcode & MASK_DESTINATION_SIZE) - { - case 0x00000000: nRc = typeSingle; break; - case 0x00000080: nRc = typeDouble; break; - case 0x00080000: nRc = typeExtended; break; - default: nRc = typeNone; - } - - return(nRc); -} - -/* condition code lookup table - index into the table is test code: EQ, NE, ... LT, GT, AL, NV - bit position in short is condition code: NZCV */ -static const unsigned short aCC[16] = { - 0xF0F0, // EQ == Z set - 0x0F0F, // NE - 0xCCCC, // CS == C set - 0x3333, // CC - 0xFF00, // MI == N set - 0x00FF, // PL - 0xAAAA, // VS == V set - 0x5555, // VC - 0x0C0C, // HI == C set && Z clear - 0xF3F3, // LS == C clear || Z set - 0xAA55, // GE == (N==V) - 0x55AA, // LT == (N!=V) - 0x0A05, // GT == (!Z && (N==V)) - 0xF5FA, // LE == (Z || (N!=V)) - 0xFFFF, // AL always - 0 // NV -}; - -unsigned int checkCondition(const unsigned int opcode, const unsigned int ccodes) -{ - return (aCC[opcode>>28] >> (ccodes>>28)) & 1; -} |