//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);