private static byte?CalculateRexPrefix(InstructionDefinition def, Operand op1, Operand op2)
{
var rexB = GetRexBit(op1);
var rexR = GetRexBit(op2);
if (def.W || rexB || rexR)
{
var rex = 0b01000000;
if (rexB)
{
rex |= 0b00000001;
}
// SIB index
//if (rexX)
//{
// rex |= 0b00000010;
//}
if (rexR)
{
rex |= 0b00000100;
}
if (def.W)
{
rex |= 0b00001000;
}
return((byte)rex);
}
return(null);
}
private static bool Matches(InstructionDefinition definition, Instruction instruction)
{
if (definition.Operands.Length != instruction.Operands.Length)
{
return(false);
}
return(instruction.Operands
.Zip(definition.Operands, (op, def) => (op, def))
.All(((Operand op, OperandDefinition opDef)tuple) => OperandMatches(tuple.opDef, tuple.op)));
}
