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| author | Gabe Black <gblack@eecs.umich.edu> | 2010-06-02 12:58:14 -0500 |
|---|---|---|
| committer | Gabe Black <gblack@eecs.umich.edu> | 2010-06-02 12:58:14 -0500 |
| commit | 9e32ff3491b3af115896798af3fd8c3606aac50f (patch) | |
| tree | b7b1b6de87ac41f9829170f22580225ab65788f2 | |
| parent | cd0a6a1303d204bd9c594e40c71ad67adb0cd092 (diff) | |
| download | gem5-9e32ff3491b3af115896798af3fd8c3606aac50f.tar.xz | |
ARM: Implement the VFP version of vabs.
| -rw-r--r-- | src/arch/arm/isa/formats/fp.isa | 16 | ||||
| -rw-r--r-- | src/arch/arm/isa/insts/fp.isa | 24 |
2 files changed, 39 insertions, 1 deletions
diff --git a/src/arch/arm/isa/formats/fp.isa b/src/arch/arm/isa/formats/fp.isa index 080174318..29b1470e9 100644 --- a/src/arch/arm/isa/formats/fp.isa +++ b/src/arch/arm/isa/formats/fp.isa @@ -554,7 +554,21 @@ let {{ (IntRegIndex)vd, (IntRegIndex)vm); } } else { - return new WarnUnimplemented("vabs", machInst); + uint32_t vd; + uint32_t vm; + if (bits(machInst, 8) == 0) { + vd = bits(machInst, 22) | (bits(machInst, 15, 12) << 1); + vm = bits(machInst, 5) | (bits(machInst, 3, 0) << 1); + return new VabsS(machInst, + (IntRegIndex)vd, (IntRegIndex)vm); + } else { + vd = (bits(machInst, 22) << 5) | + (bits(machInst, 15, 12) << 1); + vm = (bits(machInst, 5) << 5) | + (bits(machInst, 3, 0) << 1); + return new VabsD(machInst, + (IntRegIndex)vd, (IntRegIndex)vm); + } } case 0x1: if (opc3 == 1) { diff --git a/src/arch/arm/isa/insts/fp.isa b/src/arch/arm/isa/insts/fp.isa index bffdde235..56edb23f2 100644 --- a/src/arch/arm/isa/insts/fp.isa +++ b/src/arch/arm/isa/insts/fp.isa @@ -282,4 +282,28 @@ let {{ header_output += RegRegOpDeclare.subst(vnegDIop); decoder_output += RegRegOpConstructor.subst(vnegDIop); exec_output += PredOpExecute.subst(vnegDIop); + + vabsSCode = ''' + FpDest = fabsf(FpOp1); + ''' + vabsSIop = InstObjParams("vabss", "VabsS", "RegRegOp", + { "code": vabsSCode, + "predicate_test": predicateTest }, []) + header_output += RegRegOpDeclare.subst(vabsSIop); + decoder_output += RegRegOpConstructor.subst(vabsSIop); + exec_output += PredOpExecute.subst(vabsSIop); + + vabsDCode = ''' + IntDoubleUnion cOp1, cDest; + cOp1.bits = ((uint64_t)FpOp1P0.uw | ((uint64_t)FpOp1P1.uw << 32)); + cDest.fp = fabs(cOp1.fp); + FpDestP0.uw = cDest.bits; + FpDestP1.uw = cDest.bits >> 32; + ''' + vabsDIop = InstObjParams("vabsd", "VabsD", "RegRegOp", + { "code": vabsDCode, + "predicate_test": predicateTest }, []) + header_output += RegRegOpDeclare.subst(vabsDIop); + decoder_output += RegRegOpConstructor.subst(vabsDIop); + exec_output += PredOpExecute.subst(vabsDIop); }}; |