diff options
author | Gabe Black <gblack@eecs.umich.edu> | 2007-07-30 15:44:21 -0700 |
---|---|---|
committer | Gabe Black <gblack@eecs.umich.edu> | 2007-07-30 15:44:21 -0700 |
commit | 595ff465e5824d2ba82036b0316cd66ecbed2730 (patch) | |
tree | ac3afe692e1e55ea49671f2781c133a606114158 | |
parent | 77482dc439b48e81b6c3ff7767d1ed02ebb4dbbc (diff) | |
download | gem5-595ff465e5824d2ba82036b0316cd66ecbed2730.tar.xz |
X86: Remove a naming conflict between the register index parameters and the "picked" register values.
--HG--
extra : convert_revision : 7b2c1be509478153ebf396841e4cbeccee3e03d1
-rw-r--r-- | src/arch/x86/isa/microops/regop.isa | 104 |
1 files changed, 57 insertions, 47 deletions
diff --git a/src/arch/x86/isa/microops/regop.isa b/src/arch/x86/isa/microops/regop.isa index 9b7d74f50..3c562efc0 100644 --- a/src/arch/x86/isa/microops/regop.isa +++ b/src/arch/x86/isa/microops/regop.isa @@ -328,24 +328,24 @@ let {{ checkCCFlagBits = "checkCondition(ccFlagBits)" genCCFlagBits = \ - "ccFlagBits = genFlags(ccFlagBits, ext, DestReg, src1, op2);" + "ccFlagBits = genFlags(ccFlagBits, ext, DestReg, psrc1, op2);" genCCFlagBitsSub = \ - "ccFlagBits = genFlags(ccFlagBits, ext, DestReg, src1, ~op2, true);" + "ccFlagBits = genFlags(ccFlagBits, ext, DestReg, psrc1, ~op2, true);" genCCFlagBitsLogic = ''' //Don't have genFlags handle the OF or CF bits uint64_t mask = CFBit | OFBit; - ccFlagBits = genFlags(ccFlagBits, ext & ~mask, DestReg, src1, op2); + ccFlagBits = genFlags(ccFlagBits, ext & ~mask, DestReg, psrc1, op2); //If a logic microop wants to set these, it wants to set them to 0. ccFlagBits &= ~(CFBit & ext); ccFlagBits &= ~(OFBit & ext); ''' regPick = ''' - IntReg src1 = pick(SrcReg1, 0, dataSize); - IntReg src2 = pick(SrcReg2, 1, dataSize); + IntReg psrc1 = pick(SrcReg1, 0, dataSize); + IntReg psrc2 = pick(SrcReg2, 1, dataSize); ''' immPick = ''' - IntReg src1 = pick(SrcReg1, 0, dataSize); + IntReg psrc1 = pick(SrcReg1, 0, dataSize); ''' @@ -360,7 +360,7 @@ let {{ # of the code, one with an integer operand, and one with an immediate # operand. matcher = re.compile("op2(?P<typeQual>\\.\\w+)?") - regCode = regPick + matcher.sub("src2", code) + regCode = regPick + matcher.sub("psrc2", code) immCode = immPick + matcher.sub("imm8", code) if not cc: @@ -369,7 +369,7 @@ let {{ flagCode = "" condCode = checkCCFlagBits - regFlagCode = matcher.sub("src2", flagCode) + regFlagCode = matcher.sub("psrc2", flagCode) immFlagCode = matcher.sub("imm8", flagCode) class RegOpChild(RegOp): @@ -411,7 +411,7 @@ let {{ # of the code, one with an integer operand, and one with an immediate # operand. matcher = re.compile("op2(?P<typeQual>\\.\\w+)?") - regCode = regPick + matcher.sub("src2", code) + regCode = regPick + matcher.sub("psrc2", code) immCode = immPick + matcher.sub("imm8", code) class RegOpChild(RegOp): @@ -468,66 +468,76 @@ let {{ setUpMicroRegOp(name, Name, "X86ISA::RegOpImm", code); - defineMicroRegOp('Add', 'DestReg = merge(DestReg, src1 + op2, dataSize)') - defineMicroRegOp('Or', ''' - DPRINTF(X86, "src1 = %#x\\n", src1); - DPRINTF(X86, "op2 = %#x\\n", op2); - DestReg = merge(DestReg, src1 | op2, dataSize); - ''', + defineMicroRegOp('Add', 'DestReg = merge(DestReg, psrc1 + op2, dataSize)') + defineMicroRegOp('Or', 'DestReg = merge(DestReg, psrc1 | op2, dataSize);', flagCode = genCCFlagBitsLogic) defineMicroRegOp('Adc', ''' CCFlagBits flags = ccFlagBits; - DestReg = merge(DestReg, src1 + op2 + flags.CF, dataSize); + DestReg = merge(DestReg, psrc1 + op2 + flags.CF, dataSize); ''') defineMicroRegOp('Sbb', ''' CCFlagBits flags = ccFlagBits; - DestReg = merge(DestReg, src1 - op2 - flags.CF, dataSize); + DestReg = merge(DestReg, psrc1 - op2 - flags.CF, dataSize); ''', flagCode = genCCFlagBitsSub) defineMicroRegOp('And', \ - 'DestReg = merge(DestReg, src1 & op2, dataSize)', \ + 'DestReg = merge(DestReg, psrc1 & op2, dataSize)', \ flagCode = genCCFlagBitsLogic) defineMicroRegOp('Sub', \ - 'DestReg = merge(DestReg, src1 - op2, dataSize)', \ + 'DestReg = merge(DestReg, psrc1 - op2, dataSize)', \ flagCode = genCCFlagBitsSub) defineMicroRegOp('Xor', \ - 'DestReg = merge(DestReg, src1 ^ op2, dataSize)', \ + 'DestReg = merge(DestReg, psrc1 ^ op2, dataSize)', \ flagCode = genCCFlagBitsLogic) defineMicroRegOp('Mul1s', ''' int signPos = (dataSize * 8) / 2 - 1; - IntReg srcVal1 = src1 | (-bits(src1, signPos) << signPos); - IntReg srcVal2 = op2 | (-bits(src1, signPos) << signPos); + IntReg srcVal1 = psrc1 | (-bits(psrc1, signPos) << signPos); + IntReg srcVal2 = op2 | (-bits(psrc1, signPos) << signPos); DestReg = merge(DestReg, srcVal1 * srcVal2, dataSize) ''') defineMicroRegOp('Mul1u', ''' int halfSize = (dataSize * 8) / 2; - IntReg srcVal1 = src1 & mask(halfSize); + IntReg srcVal1 = psrc1 & mask(halfSize); IntReg srcVal2 = op2 & mask(halfSize); DestReg = merge(DestReg, srcVal1 * srcVal2, dataSize) ''') defineMicroRegOp('Mulel', \ - 'DestReg = merge(DestReg, src1 * op2, dataSize)') + 'DestReg = merge(DestReg, psrc1 * op2, dataSize)') defineMicroRegOp('Muleh', ''' int halfSize = (dataSize * 8) / 2; - uint64_t src1_h = src1 >> halfSize; - uint64_t src1_l = src1 & mask(halfSize); - uint64_t src2_h = op2 >> halfSize; - uint64_t src2_l = op2 & mask(halfSize); + uint64_t psrc1_h = psrc1 >> halfSize; + uint64_t psrc1_l = psrc1 & mask(halfSize); + uint64_t psrc2_h = op2 >> halfSize; + uint64_t psrc2_l = op2 & mask(halfSize); uint64_t result = - ((src1_l * src2_h) >> halfSize) + - ((src1_h * src2_l) >> halfSize) + - src1_h * src2_h; + ((psrc1_l * psrc2_h) >> halfSize) + + ((psrc1_h * psrc2_l) >> halfSize) + + psrc1_h * psrc2_h; DestReg = merge(DestReg, result, dataSize); ''') + defineMicroRegOp('Div1', ''' + int halfSize = (dataSize * 8) / 2; + IntReg quotient = (psrc1 / op2) & mask(halfSize); + IntReg remainder = (psrc1 % op2) & mask(halfSize); + IntReg result = quotient | (remainder << halfSize); + DestReg = merge(DestReg, result, dataSize); + ''') + defineMicroRegOp('Divq', ''' + DestReg = merge(DestReg, psrc1 / op2, dataSize); + ''') + defineMicroRegOp('Divr', ''' + DestReg = merge(DestReg, psrc1 % op2, dataSize); + ''') + # - # HACK HACK HACK HACK - Put src1 in here but make it inert to shut up gcc. + # HACK HACK HACK HACK - Put psrc1 in here but make it inert to shut up gcc. # - defineMicroRegOp('Mov', 'DestReg = merge(SrcReg1, src1 * 0 + op2, dataSize)', + defineMicroRegOp('Mov', 'DestReg = merge(SrcReg1, psrc1 * 0 + op2, dataSize)', elseCode='DestReg=DestReg;', cc=True) # Shift instructions defineMicroRegOp('Sll', ''' uint8_t shiftAmt = (op2 & ((dataSize == 8) ? mask(6) : mask(5))); - DestReg = merge(DestReg, src1 << shiftAmt, dataSize); + DestReg = merge(DestReg, psrc1 << shiftAmt, dataSize); ''') defineMicroRegOp('Srl', ''' uint8_t shiftAmt = (op2 & ((dataSize == 8) ? mask(6) : mask(5))); @@ -535,7 +545,7 @@ let {{ // is not defined in the C/C++ standard, we have to mask them out // to be sure they're zero. uint64_t logicalMask = mask(dataSize * 8 - shiftAmt); - DestReg = merge(DestReg, (src1 >> shiftAmt) & logicalMask, dataSize); + DestReg = merge(DestReg, (psrc1 >> shiftAmt) & logicalMask, dataSize); ''') defineMicroRegOp('Sra', ''' uint8_t shiftAmt = (op2 & ((dataSize == 8) ? mask(6) : mask(5))); @@ -544,15 +554,15 @@ let {{ // them manually to be sure. uint64_t arithMask = -bits(op2, dataSize * 8 - 1) << (dataSize * 8 - shiftAmt); - DestReg = merge(DestReg, (src1 >> shiftAmt) | arithMask, dataSize); + DestReg = merge(DestReg, (psrc1 >> shiftAmt) | arithMask, dataSize); ''') defineMicroRegOp('Ror', ''' uint8_t shiftAmt = (op2 & ((dataSize == 8) ? mask(6) : mask(5))); if(shiftAmt) { - uint64_t top = src1 << (dataSize * 8 - shiftAmt); - uint64_t bottom = bits(src1, dataSize * 8, shiftAmt); + uint64_t top = psrc1 << (dataSize * 8 - shiftAmt); + uint64_t bottom = bits(psrc1, dataSize * 8, shiftAmt); DestReg = merge(DestReg, top | bottom, dataSize); } else @@ -566,8 +576,8 @@ let {{ CCFlagBits flags = ccFlagBits; uint64_t top = flags.CF << (dataSize * 8 - shiftAmt); if(shiftAmt > 1) - top |= src1 << (dataSize * 8 - shiftAmt - 1); - uint64_t bottom = bits(src1, dataSize * 8, shiftAmt); + top |= psrc1 << (dataSize * 8 - shiftAmt - 1); + uint64_t bottom = bits(psrc1, dataSize * 8, shiftAmt); DestReg = merge(DestReg, top | bottom, dataSize); } else @@ -578,9 +588,9 @@ let {{ (op2 & ((dataSize == 8) ? mask(6) : mask(5))); if(shiftAmt) { - uint64_t top = src1 << shiftAmt; + uint64_t top = psrc1 << shiftAmt; uint64_t bottom = - bits(src1, dataSize * 8 - 1, dataSize * 8 - shiftAmt); + bits(psrc1, dataSize * 8 - 1, dataSize * 8 - shiftAmt); DestReg = merge(DestReg, top | bottom, dataSize); } else @@ -592,11 +602,11 @@ let {{ if(shiftAmt) { CCFlagBits flags = ccFlagBits; - uint64_t top = src1 << shiftAmt; + uint64_t top = psrc1 << shiftAmt; uint64_t bottom = flags.CF << (shiftAmt - 1); if(shiftAmt > 1) bottom |= - bits(src1, dataSize * 8 - 1, + bits(psrc1, dataSize * 8 - 1, dataSize * 8 - shiftAmt + 1); DestReg = merge(DestReg, top | bottom, dataSize); } @@ -604,15 +614,15 @@ let {{ DestReg = DestReg; ''') - defineMicroRegOpWr('Wrip', 'RIP = src1 + op2', elseCode="RIP = RIP;") + defineMicroRegOpWr('Wrip', 'RIP = psrc1 + op2', elseCode="RIP = RIP;") defineMicroRegOpRd('Rdip', 'DestReg = RIP') defineMicroRegOpImm('Sext', ''' - IntReg val = src1; + IntReg val = psrc1; int sign_bit = bits(val, imm8-1, imm8-1); val = sign_bit ? (val | ~mask(imm8)) : val; DestReg = merge(DestReg, val, dataSize);''') - defineMicroRegOpImm('Zext', 'DestReg = bits(src1, imm8-1, 0);') + defineMicroRegOpImm('Zext', 'DestReg = bits(psrc1, imm8-1, 0);') }}; |