diff options
Diffstat (limited to 'src/arch/x86')
| -rw-r--r-- | src/arch/x86/isa/microops/mediaop.isa | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/src/arch/x86/isa/microops/mediaop.isa b/src/arch/x86/isa/microops/mediaop.isa index 12dfa026c..bfa1577c2 100644 --- a/src/arch/x86/isa/microops/mediaop.isa +++ b/src/arch/x86/isa/microops/mediaop.isa @@ -948,6 +948,25 @@ let {{ FpDestReg.uqw = result; ''' + class Msad(MediaOp): + code = ''' + int srcBits = srcSize * 8; + int items = sizeof(FloatRegBits) / srcSize; + + uint64_t sum = 0; + for (int i = 0; i < items; i++) { + int hiIndex = (i + 1) * srcBits - 1; + int loIndex = (i + 0) * srcBits; + uint64_t arg1Bits = bits(FpSrcReg1.uqw, hiIndex, loIndex); + uint64_t arg2Bits = bits(FpSrcReg2.uqw, hiIndex, loIndex); + int64_t resBits = arg1Bits - arg2Bits; + if (resBits < 0) + resBits = -resBits; + sum += resBits; + } + FpDestReg.uqw = sum & mask(destSize * 8); + ''' + class Cvti2f(MediaOp): def __init__(self, dest, src, \ size = None, destSize = None, srcSize = None, ext = None): |