I'm trying to start a port to my digital camera
Which Model?
Functions in VxWorks-cameras are (partly) identified using signatures (by tools/findsig). You will still probably have to find some by yourself. In any case you will need to find several addresses by examining the firmware.
Do you have IDA Pro? If not, don't bother to do something. It'll take you ages. If you do, use it to compare platform-dependent code and firmware of a supported camera (which is ideally similar to your own) with your cameras firmware. Be warned: It's probably not done between two cups of coffee.
Cheers.