Fault Address from sigcontext for the various archs

Greetings! I'm trying to assist in porting gcl to the various Linux archs, and the code as is needs the fault address from struct sigcontext. i386 and m68k work, with solutions shown below. What about the other archs? Where can I find the fault address around this struct? Thanks!

Fault Address from sigcontext for the various archs

Greetings! I'm trying to assist in porting gcl to the various Linux archs, and the code as is needs the fault address from struct sigcontext. i386 and m68k work, with solutions shown below. What about the other archs? Where can I find the fault address around this struct? Thanks!