if (cSP != 0) {
MapEntry caller = callStack[cSP-1].function;
HashMap<MapEntry,CallCounter> callers = ce.callers;
CallCounter numCalls = callers.get(caller);
if (numCalls == null) {
numCalls = new CallCounter();
callers.put(caller, numCalls);
}
numCalls.count++;
}