diff options
Diffstat (limited to 'src/arch/x86/isa/microops/mediaop.isa')
-rw-r--r-- | src/arch/x86/isa/microops/mediaop.isa | 86 |
1 files changed, 85 insertions, 1 deletions
diff --git a/src/arch/x86/isa/microops/mediaop.isa b/src/arch/x86/isa/microops/mediaop.isa index bfa1577c2..52292cbd1 100644 --- a/src/arch/x86/isa/microops/mediaop.isa +++ b/src/arch/x86/isa/microops/mediaop.isa @@ -190,7 +190,7 @@ let {{ typeQual = "" if match.group("typeQual"): typeQual = match.group("typeQual") - src2_name = "%spsrc2%s" % (match.group("prefix"), typeQual) + src2_name = "%sFpSrcReg2%s" % (match.group("prefix"), typeQual) self.buildCppClasses(name, Name, suffix, matcher.sub(src2_name, code)) self.buildCppClasses(name + "i", Name, suffix + "Imm", @@ -967,6 +967,90 @@ let {{ FpDestReg.uqw = sum & mask(destSize * 8); ''' + class Msrl(MediaOp): + code = ''' + + assert(srcSize == destSize); + int size = srcSize; + int sizeBits = size * 8; + int items = (ext & 0x1) ? 1: (sizeof(FloatRegBits) / size); + uint64_t shiftAmt = op2.uqw; + 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 resBits; + if (shiftAmt >= sizeBits) { + resBits = 0; + } else { + resBits = (arg1Bits >> shiftAmt) & + mask(sizeBits - shiftAmt); + } + + result = insertBits(result, hiIndex, loIndex, resBits); + } + FpDestReg.uqw = result; + ''' + + class Msra(MediaOp): + code = ''' + + assert(srcSize == destSize); + int size = srcSize; + int sizeBits = size * 8; + int items = (ext & 0x1) ? 1: (sizeof(FloatRegBits) / size); + uint64_t shiftAmt = op2.uqw; + 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 resBits; + if (shiftAmt >= sizeBits) { + if (bits(arg1Bits, sizeBits - 1)) + resBits = mask(sizeBits); + else + resBits = 0; + } else { + resBits = (arg1Bits >> shiftAmt); + resBits = resBits | + (0 - (resBits & (1 << (sizeBits - 1 - shiftAmt)))); + } + + result = insertBits(result, hiIndex, loIndex, resBits); + } + FpDestReg.uqw = result; + ''' + + class Msll(MediaOp): + code = ''' + + assert(srcSize == destSize); + int size = srcSize; + int sizeBits = size * 8; + int items = (ext & 0x1) ? 1: (sizeof(FloatRegBits) / size); + uint64_t shiftAmt = op2.uqw; + 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 resBits; + if (shiftAmt >= sizeBits) { + resBits = 0; + } else { + resBits = (arg1Bits << shiftAmt); + } + + result = insertBits(result, hiIndex, loIndex, resBits); + } + FpDestReg.uqw = result; + ''' + class Cvti2f(MediaOp): def __init__(self, dest, src, \ size = None, destSize = None, srcSize = None, ext = None): |