public static bool IsJumpVariable(this ParsedInstruction instr)
{
switch (instr.Instruction)
{
case Instruction.JMP0:
return(true);
default:
return(false);
}
}
public static bool IsJumpStatic(this ParsedInstruction instr)
{
switch (instr.Instruction)
{
case Instruction.JMP:
case Instruction.CALL:
return(true);
default:
return(false);
}
}
public bool TryDecode(UInt16 val, out ParsedInstruction inst)
{
var m = Instructions.Keys.FirstOrDefault(x => x.Matches(val));
if (m == null)
{
inst = new ParsedInstruction(0, 0, 0, 0);
return(false);
}
inst = m.Parse(val, Instructions[m]);
return(true);
}
public static bool GeneratesLabel(this ParsedInstruction instr)
{
switch (instr.Instruction)
{
case Instruction.JMP:
case Instruction.CALL:
case Instruction.JMP0:
case Instruction.LII:
return(true);
default:
return(false);
}
}
public static UInt16 GetLabelTarget(this ParsedInstruction instr)
{
switch (instr.Instruction)
{
case Instruction.JMP:
case Instruction.CALL:
case Instruction.JMP0:
case Instruction.LII:
return(instr.Immediate16);
default:
throw new Exception("Not a jump instruction");
}
}
public static bool IsSkipNext(this ParsedInstruction instr)
{
switch (instr.Instruction)
{
case Instruction.SER:
case Instruction.SNER:
case Instruction.SNEI:
case Instruction.SEI:
case Instruction.SKP:
case Instruction.SKNP:
return(true);
default:
return(false);
}
}
public static bool IsControlFlow(this ParsedInstruction instr)
{
switch (instr.Instruction)
{
case Instruction.JMP:
case Instruction.CALL:
case Instruction.JMP0:
case Instruction.RET:
case Instruction.SER:
case Instruction.SNER:
case Instruction.SNEI:
case Instruction.SEI:
case Instruction.SKP:
case Instruction.SKNP:
return(true);
default:
return(false);
}
}
public string DisassembleLine(ParsedInstruction inst) => InstructionTable[inst.Instruction](inst);
