If you want to contribute to the port, either in GCC, GDB, Binutils or anything else, please follow the contribution guidelines defined by the FSF. In short:

• Get from your employer some signed disclaimer
• Yourself, do sign some disclaimer letter
• Send all this to the FSF and wait for the FSF acknowledgment
• All contributions must conform to the GNU Coding Standards.

For information, my past employer, Sun Microsystems, and my new employer, Solsoft, have signed the Employer disclaimer of rights. I have signed 4 assign.future letters, one for GCC, one for GDB, one for the Binutils and one for DejaGNU. Richard Stallman signed back these letters, so that I'm not officially registered.