l1 = new Location(new AbsoluteAddress(0x12345678));
l2 = new Location(new AbsoluteAddress(0xFF241111));
l3 = new Location(new AbsoluteAddress(0xEE345678));
l4 = new Location(new AbsoluteAddress(0xDD345678));
s1 = new CallStackState(new LinkedList<Location>(Arrays.asList(l1, l2, l3, l4)));
s2 = new CallStackState(new LinkedList<Location>(Arrays.asList(l1, l2, l3, l4)));
s3 = new CallStackState(new LinkedList<Location>(Arrays.asList(l3, l2)));
s4 = new CallStackState(new LinkedList<Location>());
}