The implementation of RegisterContextDarwin_arm is surrounded by
#if defined(APPLE).
Some other files define subclasses, e.g. RegisterContextDarwin_arm_Mach in ObjectFileMachO.cpp, that are built on non-apple machines.
This seems… confusing, and causes me some problems trying to do dynamic linking.
Is there something wrong here, or should I just avoid doing that 
Cheers, Sam