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: 2e22502c ARC: dw2 unwind: Remove falllback linear search thru FDE entries Cc: <stable@vger.kernel.org> Signed-off-by:Vineet Gupta <vgupta@synopsys.com>
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