private void createLookupFunction(SootMethod m) {
// TODO: This should use a virtual method table or interface method table.
Function function = FunctionBuilder.lookup(m);
mb.addFunction(function);
Variable reserved0 = function.newVariable(I8_PTR_PTR);
function.add(new Getelementptr(reserved0, function.getParameterRef(0), 0, 4));
Variable reserved1 = function.newVariable(I8_PTR_PTR);
function.add(new Getelementptr(reserved1, function.getParameterRef(0), 0, 5));
function.add(new Store(getString(m.getName()), reserved0.ref()));
function.add(new Store(getString(getDescriptor(m)), reserved1.ref()));
Value lookupFn =
sootClass.isInterface() ? BC_LOOKUP_INTERFACE_METHOD : BC_LOOKUP_VIRTUAL_METHOD;
List<Value> args = new ArrayList<Value>();
args.add(function.getParameterRef(0));
if (sootClass.isInterface()) {
Value info = getInfoStruct(function);
args.add(info);
}
args.add(function.getParameterRef(1));
args.add(getString(m.getName()));
args.add(getString(getDescriptor(m)));
Value fptr = call(function, lookupFn, args);
Variable f = function.newVariable(function.getType());
function.add(new Bitcast(f, fptr, f.getType()));
Value result = call(function, f.ref(), function.getParameterRefs());
function.add(new Ret(result));
}
