Message	SHA1
xtensa: provide custom CALLER_ADDR* implementations ... Definition of CALLER_ADDR* through __builtin_return_address makes compiler insert calls to __xtensa_libgcc_window_spill, which in turn makes fast_syscall_spill_registers syscall that clobbers registers when called from the kernel mode, leading to invalid opcode exceptions on return to userspace. Provide definition for CALLER_ADDR0 as MAKE_PC_FROM_RA(a0, a1) and in case CONFIG_FRAME_POINTER is enabled extract CALLER_ADDR{1-3} from stack. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Chris Zankel <chris@zankel.net> Max Filippov   authored and   Chris Zankel   commited 2013-05-09 01:07:10 -07:00	3ae908c99e
xtensa: add stacktrace support ... Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Chris Zankel <chris@zankel.net> Max Filippov   authored and   Chris Zankel   commited 2013-05-09 01:07:10 -07:00	3e4196a5cc