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Author SHA1 Message Date
Yabin Cui 5d991bc351 libbacktrace_offline: support .ARM.exidx. 
1. Read .ARM.exidx and .ARM.extab, provides these data to libunwind
through AccessMem.
2. In FindProcInfo, search .ARM.exidx for the idx entry of function
containing ip.
3. Add structures to store .ARM.exidx info in DebugFrameInfo, and
clean up the structure.
4. Add tests to test each unwind information (.eh_frame, .debug_frame,
.gnu_debugdata, .ARM.exidx) separately.

Bug: http://b/30974693
Test: run backtrace_test.
Test: run simpleperf runtest.py.
Change-Id: I9377a54379158bd35860efcf0e011423be7350d4
 2016-12-07 10:25:33 -08:00
Yabin Cui 9e402bb20c Revert "Revert "Revert "Revert "Add BacktraceOffline for offline backtracing."""" 
This reverts commit 94ece83270.

Change-Id: Ie06465c89a5fc115517130f9f2904cc855973155
 2015-09-22 04:46:57 +00:00
Yabin Cui 94ece83270 Revert "Revert "Revert "Add BacktraceOffline for offline backtracing.""" 
This reverts commit 0a411c934a.

Change-Id: Ic1824afac6c32f1087b66de9d6368a561f235d13
 2015-09-22 01:38:17 +00:00
Yabin Cui 0a411c934a Revert "Revert "Add BacktraceOffline for offline backtracing."" 
This reverts commit ab5e583327.

And statically link llvm libraries on host to remove dependency
on 32-bit llvm shared library which is not included in the prebuilt.

Bug: 22229391

Change-Id: I8210687655ee1809fd820ab2a6ca5dfaf3f9096d
 2015-09-21 12:54:45 -07:00
Yabin Cui ab5e583327 Revert "Add BacktraceOffline for offline backtracing." 
Using llvm makes libbacktrace stops building for 32 bit on linux host x86_64.

This reverts commit c9c6b6ee77.

Change-Id: Ieb807db881d7bb3132cd09e25fd08c28766ca0a8
 2015-09-17 22:54:22 +00:00
Yabin Cui c9c6b6ee77 Add BacktraceOffline for offline backtracing. 
It is used by simpeleprf for stack unwinding.

Bug: 22229391
Change-Id: I26d698610ccdc9545da837bc5a8a9ec787f27a6b
 2015-09-16 17:38:23 -07:00