commit 0ca49b09add6f8d0fc3254984cb3f87d192b910b
author Yabin Cui <yabinc@google.com> Sun Dec 10 17:55:12 2017 -0800
committer Yabin Cui <yabinc@google.com> Sun Dec 10 18:00:35 2017 -0800
tree a9817a12857178e5de2ede7c5be1b709c4b9956a
parent d65c6ba9552816382fd760024574a1a6d353f2a4

libBacktraceOffline: try both .debug_frame and .ARM.exidx on arm.

Currently, libBacktraceOffline doesn't try .ARM.exidx if a function
appears in .debug_frame. This make it can't unwind through functions
appear in both .debug_frame and .ARM.exidx, but having dwarf instructions
not accepted by libunwind.
This patch fixes this by trying first .debug_frame then .ARM.exidx on arm.

Bug: http://b/69383534
Test: run libbacktrace_test on arm.

Change-Id: Ib95dd56d5cc123a20948e880b51b28ddc04b4a6e