/// <summary>
/// Emits the specified platform instruction.
/// </summary>
/// <param name="context">The context.</param>
/// <param name="emitter">The emitter.</param>
protected override void Emit(Context context, MachineCodeEmitter emitter)
{
if (context.Result.IsRegister && context.Operand1.IsRegister)
{
emitter.EmitTwoRegisterInstructions(0x03, (byte)context.Operand1.Register.RegisterCode, (byte)context.Result.Register.RegisterCode); // cp.w Rd, Rs
}
else if (context.Result.IsRegister && context.Operand1.IsConstant)
{
int value = 0;
if (IsConstantBetween(context.Operand1, -32, 31, out value))
{
emitter.EmitK6immediateAndSingleRegister((sbyte)value, (byte)context.Result.Register.RegisterCode); // cp.w Rd, imm 6 bits
}
else if (IsConstantBetween(context.Operand1, -1048576, 1048575, out value))
{
emitter.EmitRegisterOrConditionCodeAndK21((byte)0x02, (byte)context.Result.Register.RegisterCode, value); // cp.w Rd, imm 21 bits
}
else
throw new OverflowException();
}
else
throw new Exception("Not supported combination of operands");
}
