public static void Clz(ArmEmitterContext context)
{
Operand m = GetAluM(context, setCarry: false);
Operand res = context.CountLeadingZeros(m);
EmitAluStore(context, res);
}
public static void Clz(ArmEmitterContext context)
{
OpCodeAlu op = (OpCodeAlu)context.CurrOp;
Operand n = GetIntOrZR(context, op.Rn);
Operand d = context.CountLeadingZeros(n);
SetAluDOrZR(context, d);
}
public static void Cls(ArmEmitterContext context)
{
OpCodeAlu op = (OpCodeAlu)context.CurrOp;
Operand n = GetIntOrZR(context, op.Rn);
Operand nHigh = context.ShiftRightUI(n, Const(1));
bool is32Bits = op.RegisterSize == RegisterSize.Int32;
Operand mask = is32Bits ? Const(int.MaxValue) : Const(long.MaxValue);
Operand nLow = context.BitwiseAnd(n, mask);
Operand res = context.CountLeadingZeros(context.BitwiseExclusiveOr(nHigh, nLow));
res = context.Subtract(res, Const(res.Type, 1));
SetAluDOrZR(context, res);
}