/// <summary>
/// Performs a single processor step.
/// </summary>
private int Step()
{
reader.Address = machine.PC;
currentInstruction = reader.NextInstruction();
var oldPC = machine.PC;
OnStepping(oldPC);
var newPC = machine.Step();
// If the instruction just executed was a call, we should add the address to the
// routine table. The address is packed inside the first operand value. Note that
// we need to do this prior to calling firing the ProcessorStepped event to ensure
// that the disassembly view gets updated with the new routine before attempting
// to set the new IP.
if (currentInstruction.Opcode.IsCall)
{
var callOpValue = machine.GetOperandValue(0);
var callAddress = storyService.Story.UnpackRoutineAddress(callOpValue);
if (callAddress != 0)
{
routineService.Add(callAddress);
}
}
OnStepped(oldPC, newPC);
hasStepped = true;
return(newPC);
}
