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Implement rotate with carry microops.

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--HG--
extra : convert_revision : 1d7ff6611e5b4766a5257c1e73681fabbe5f6d76
This commit is contained in:
Gabe Black 2007-07-21 19:27:38 -07:00
parent fc1b7d62b7
commit ee6fbdc28b
1 changed files with 28 additions and 0 deletions
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28
src/arch/x86/isa/microops/regop.isa
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@ -499,6 +499,19 @@ let {{
DestReg = DestReg;
''')
defineMicroRegOp('Rcr', '''
uint8_t shiftAmt =
(op2 & ((dataSize == 8) ? mask(4) : mask(3)));
if(shiftAmt)
{
CCFlagBits flags = ccFlagBits;
uint64_t top = flags.CF << (dataSize * 8 - shiftAmt);
if(shiftAmt > 1)
top |= SrcReg1 << (dataSize * 8 - shiftAmt - 1);
uint64_t bottom = bits(SrcReg1, dataSize * 8, shiftAmt);
DestReg = merge(DestReg, top | bottom, dataSize);
}
else
DestReg = DestReg;
''')
defineMicroRegOp('Rol', '''
uint8_t shiftAmt =
@ -514,6 +527,21 @@ let {{
DestReg = DestReg;
''')
defineMicroRegOp('Rcl', '''
uint8_t shiftAmt =
(op2 & ((dataSize == 8) ? mask(4) : mask(3)));
if(shiftAmt)
{
CCFlagBits flags = ccFlagBits;
uint64_t top = SrcReg1 << shiftAmt;
uint64_t bottom = flags.CF << (shiftAmt - 1);
if(shiftAmt > 1)
bottom |=
bits(SrcReg1, dataSize * 8 - 1,
dataSize * 8 - shiftAmt + 1);
DestReg = merge(DestReg, top | bottom, dataSize);
}
else
DestReg = DestReg;
''')
defineMicroRegOpWr('Wrip', 'RIP = SrcReg1 + op2', elseCode="RIP = RIP;")