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Fix V amd C flags for DPI subs instruction

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This commit is contained in:
Themis Demetriades 2024-06-06 13:30:47 +01:00
parent 460b19aaf4
commit c2844ce0ec
1 changed files with 3 additions and 3 deletions
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6
src/execute.c
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@ -134,8 +134,8 @@ static void executeDPImmediate(Machine *state, a64inst_instruction *inst) {
writeRegister(state, dest, regType, result); writeRegister(state, dest, regType, result);
updateCondNZ(state, result, regType); updateCondNZ(state, result, regType);
state->conditionCodes.Overflow = srcVal < result; state->conditionCodes.Overflow = getMSB(srcVal, regType) != getMSB(arithmImm, regType) && getMSB(arithmImm, regType) == getMSB(result, regType);
state->conditionCodes.Carry = state->conditionCodes.Overflow; state->conditionCodes.Carry = srcVal >= arithmImm;
break; break;
case(a64inst_SUB): case(a64inst_SUB):
@ -262,7 +262,7 @@ static void executeDPRegister(Machine *state, a64inst_instruction *inst) {
writeRegister(state, dest, regType, result); writeRegister(state, dest, regType, result);
updateCondNZ(state, result, regType); updateCondNZ(state, result, regType);
state->conditionCodes.Overflow = getMSB(src1Val, regType) != getMSB(src2Val, regType) && getMSB(src1Val, regType) != getMSB(result, regType); state->conditionCodes.Overflow = getMSB(src1Val, regType) != getMSB(src2Val, regType) && getMSB(src2Val, regType) == getMSB(result, regType);
state->conditionCodes.Carry = src1Val >= src2Val; state->conditionCodes.Carry = src1Val >= src2Val;
break; break;