tree 7dceeabe3e3ec851813eb6f752e15eeb95bc7f58
parent ff1c0b6a795bce744527bc10c8268127ed818b42
author Vineet Gupta <vgupta@synopsys.com> 1449837262 +0530
committer Vineet Gupta <vgupta@synopsys.com> 1450330823 +0530

ARC: dw2 unwind: Reinstante unwinding out of modules

The fix which removed linear searching of dwarf (because binary lookup
data always exists) missed out on the fact that modules don't get the
binary lookup tables info. This caused unwinding out of modules to stop
working.

So add binary lookup header setup (equivalent of eh_frame_hdr setup) to
modules as well.

While at it, confine the header setup to within unwinder code,
reducing one API exposed out of unwinder code.

Fixes: 2e22502c080f ARC: dw2 unwind: Remove falllback linear search thru FDE entries
Cc: <stable@vger.kernel.org>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>