public override IEnumerable <TmsCommand> Translate(Z80AssemblyParsing.Commands.NegateCommand z80Command)
{
var negOneByte = new LabeledAddressTmsOperand(_labelHighlighter.NegOneByteLabel);
var accumulatorLowByte = new IndirectRegisterTmsOperand(WorkspaceRegister.R12);
var accumulatorOperand = new RegisterTmsOperand(_registerMap[Z80AssemblyParsing.Register.A]);
yield return(new MoveByteCommand(z80Command, negOneByte, accumulatorLowByte));
yield return(new NegateCommand(z80Command, accumulatorOperand));
}
public override IEnumerable <TmsCommand> Translate(Z80AssemblyParsing.Commands.RotateRightCarryCommand rotateRightCarryCommand)
{
var registerOperand = new RegisterTmsOperand(_registerMap[Z80AssemblyParsing.Register.A]);
var indirectRegisterOperand = new IndirectRegisterTmsOperand(WorkspaceRegister.R12);
var oneBitOperand = new ImmediateTmsOperand(1);
yield return(new MoveByteCommand(rotateRightCarryCommand, registerOperand, indirectRegisterOperand));
yield return(new ShiftRightCircularCommand(rotateRightCarryCommand, oneBitOperand, registerOperand));
}
public override IEnumerable <TmsCommand> Translate(T logicCommand)
{
var zeroByte = new LabeledAddressTmsOperand(_labelHighlighter.ZeroByteLabel);
var accumulatorLowByte = new IndirectRegisterTmsOperand(WorkspaceRegister.R12);
var accumulatorOperand = new RegisterTmsOperand(_registerMap[Z80AssemblyParsing.Register.A]);
if (logicCommand.Operand is Z80AssemblyParsing.Operands.IndirectRegisterOperand &&
MustUnifyRegisterPairs(logicCommand.Operand, out var copyFromOperand, out var copyToOperand, out var unifiedOperand))
{
yield return(new MoveByteCommand(logicCommand, copyFromOperand, copyToOperand));
yield return(GetEquivCommand <TmsEquivCommand>(logicCommand, unifiedOperand, accumulatorOperand));
}
protected bool MustUnifyRegisterPairs(Z80AssemblyParsing.Operand z80operand, out Operand copyFromOperand, out Operand copyToOperand, out Operand unifiedOperand)
{
if (z80operand is Z80Operands.IndirectRegisterOperand indirectRegisterOperand &&
!RegisterPairIsMappedToSameWorkspaceRegister(indirectRegisterOperand.Register))
{
var registerPair = indirectRegisterOperand.Register;
if (_unsplitableRegisters.Contains(registerPair))
{
throw new Exception("Can't do unify operation for " + registerPair);
}
else
{
copyFromOperand = new RegisterTmsOperand(_registerMap[GetLastRegisterInPair(registerPair)]);
copyToOperand = new IndirectRegisterTmsOperand(GetRegisterPointingToLowerByte(registerPair));
unifiedOperand = new IndirectRegisterTmsOperand(_registerMap[GetFirstRegisterInPair(registerPair)]);
}
return(true);
}
