Is it just a piece of the binding that broke off or did the binding actually rip out of the core ?
if it's just the binding that's broken, look for the same model and remount that single piece....
If the binding however actually ripped out of the ski you have 5 options
1) if the holes aren't stripped you can simply remount in the same holes again
2) if the holes are partially stripped or you don't trust that business, you can get helicoils or any other kind of insert in those holes and you'll be set again !
3)remount forward or backward (keep at least a cm distance between old and new holes)
4)remount with different bindings, make sure that with the new bindings screw pattern, there still is at least 1cm between old and new holes....
5) get new skis