to call a procedure inside another procedure in oracle

How to call a procedure in a different procedure

create package  XX

procedure xx1( a in number,b in number , c out number, ret_msg out varchar2, ret_status varchar2)

procedure xx2 ( x in number, y in number)

end XX;

create package  body XX is

procedure xx2 ( x in number, y in number)

cursor c1 is select a1,b1 from xx_table

for i in 1..5

-- The a1 and b1 should be passed as input parameters to procdure xx1.

end XX;

Thanks in advance