diff options
| -rw-r--r-- | src/arch/x86/isa/microops/regop.isa | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/arch/x86/isa/microops/regop.isa b/src/arch/x86/isa/microops/regop.isa index 4d4079f5f..5461223a3 100644 --- a/src/arch/x86/isa/microops/regop.isa +++ b/src/arch/x86/isa/microops/regop.isa @@ -711,8 +711,12 @@ let {{ //worry about setting them. ccFlagBits = ccFlagBits & ~(ext & (CFBit | ECFBit | OFBit)); //If some combination of the CF bits need to be set, set them. - if ((ext & (CFBit | ECFBit)) && bits(SrcReg1, shiftAmt - 1)) + uint8_t effectiveShift = + (shiftAmt <= dataSize * 8) ? shiftAmt : (dataSize * 8); + if ((ext & (CFBit | ECFBit)) && + bits(SrcReg1, effectiveShift - 1)) { ccFlagBits = ccFlagBits | (ext & (CFBit | ECFBit)); + } //Use the regular mechanisms to calculate the other flags. ccFlagBits = genFlags(ccFlagBits, ext & ~(CFBit | ECFBit | OFBit), DestReg, psrc1, op2); |