public override void Decode(Decoder decoder, ref Instruction instruction)
{
Debug.Assert(decoder.state.Encoding == EncodingKind.Legacy);
OpCodeHandler handler;
var prefix = decoder.state.mandatoryPrefix;
if (prefix == MandatoryPrefix.PF3)
{
decoder.ClearMandatoryPrefixF3(ref instruction);
handler = handlerF3;
}
else if (prefix == MandatoryPrefix.PF2)
{
decoder.ClearMandatoryPrefixF2(ref instruction);
handler = handlerF2;
}
else
{
Debug.Assert(prefix == MandatoryPrefix.None || prefix == MandatoryPrefix.P66);
handler = handlerNormal;
}
if (handler.HasModRM)
{
decoder.ReadModRM();
}
handler.Decode(decoder, ref instruction);
}