What would a real Robocop's "prime directives" be?

In the film, Robocop’s prime directives are:
1. “Serve the public trust”
2. “Protect the innocent”
3. “Uphold the law”
4. “Any attempt to arrest a senior officer of OCP results in shutdown”

In light of actual reality, the first 3 are hopelessly naive, with only the 4th directive being one that would actually be implemented.
What would the first 3 directives be in the real world?