diff options
| -rw-r--r-- | src/arch/x86/isa/microops/regop.isa | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/arch/x86/isa/microops/regop.isa b/src/arch/x86/isa/microops/regop.isa index 698216139..ac380f34b 100644 --- a/src/arch/x86/isa/microops/regop.isa +++ b/src/arch/x86/isa/microops/regop.isa @@ -648,8 +648,10 @@ let {{ ccFlagBits = ccFlagBits & ~(ext & (CFBit | ECFBit | OFBit)); int CFBits = 0; //Figure out if we -would- set the CF bits if requested. - if (bits(SrcReg1, dataSize * 8 - shiftAmt)) + if (shiftAmt <= dataSize * 8 && + bits(SrcReg1, dataSize * 8 - shiftAmt)) { CFBits = 1; + } //If some combination of the CF bits need to be set, set them. if ((ext & (CFBit | ECFBit)) && CFBits) ccFlagBits = ccFlagBits | (ext & (CFBit | ECFBit)); |