no
i mean if that the pushbutton of p1.0 for example
is connected to both p1.0 and the INT0 pin in the same time (this is done to all of the push buttons on p1 so that it means when any push button pressed it will make interupt) so that when that button is pressed it cause the interupt to work
and the interupt handler should scan p1 and know which pin had trigrred the interupt