diff options
Diffstat (limited to 'src/arch/x86')
| -rw-r--r-- | src/arch/x86/isa/microops/mediaop.isa | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/src/arch/x86/isa/microops/mediaop.isa b/src/arch/x86/isa/microops/mediaop.isa index 7e7016368..b771cca83 100644 --- a/src/arch/x86/isa/microops/mediaop.isa +++ b/src/arch/x86/isa/microops/mediaop.isa @@ -955,6 +955,26 @@ let {{ FpDestReg.uqw = result; ''' + class Mavg(MediaOp): + code = ''' + assert(srcSize == destSize); + int size = srcSize; + int sizeBits = size * 8; + int items = (ext & 0x1) ? 1: (sizeof(FloatRegBits) / size); + uint64_t result = FpDestReg.uqw; + + for (int i = 0; i < items; i++) { + int hiIndex = (i + 1) * sizeBits - 1; + int loIndex = (i + 0) * sizeBits; + uint64_t arg1Bits = bits(FpSrcReg1.uqw, hiIndex, loIndex); + uint64_t arg2Bits = bits(FpSrcReg2.uqw, hiIndex, loIndex); + uint64_t resBits = (arg1Bits + arg2Bits + 1) / 2; + + result = insertBits(result, hiIndex, loIndex, resBits); + } + FpDestReg.uqw = result; + ''' + class Msad(MediaOp): code = ''' int srcBits = srcSize * 8; |