user/sven/linux.git/arch/csky/kernel/stacktrace.c, branch v5.4.262Linux Kernel
https://git.stealer.net/cgit.cgi/user/sven/linux.git/atom?h=v5.4.2622018-12-31T15:12:22Zcsky: stacktrace supported.2018-12-31T15:12:22ZGuo Renren_guo@c-sky.com2018-12-09T06:18:05Zurn:sha1:0ea2dc7cd668be5475babecaf6fdeaa464e2847b
The gcc option "-mbacktrace" will push fp(r8),lr into stack and we could
unwind the stack with:
fp = *fp
lr = (unsigned int *)fp[1]
Signed-off-by: Guo Ren <ren_guo@c-sky.com>