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platform_system_core/libunwindstack
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Ryan Prichard 9b8f545920 libunwindstack: Support signal frame CIEs. 
Mark a CIE with a S in its augmentation string as signal frame.
This allows the code to properly handle signal frame data if none
of the signal frame pattern matchers work.

For a signal frame, DwarfSectionImpl<AddressType>::Eval needs to
continue the unwinding even if PC is zero. A zero PC means that the
program has crashed, and we should try to recover the real PC using the
return address on the stack or LR. This behavior is tested by
UnwindOffline.signal_{x86,x86_64}, which modify the libc.so files
so that the signal frame pattern matcher fails and the CIE/FDE
data is used instead.

Test: libunwindstack_test
Change-Id: I4655b070028fd984345311a5e743796f8c30ed36
2020-10-02 16:34:14 -07:00
..
benchmarks Add new reparse benchmarks. 2020-05-19 10:31:53 -07:00
include/unwindstack libunwindstack: Support signal frame CIEs. 2020-10-02 16:34:14 -07:00
tests libunwindstack: Support signal frame CIEs. 2020-10-02 16:34:14 -07:00
tools Add arch member into Unwinder object. 2020-09-24 18:46:23 -07:00
.clang-format Use the 2 space clang format for libunwindstack. 2017-03-21 10:41:45 -07:00
Android.bp libunwindstack: Support signal frame CIEs. 2020-10-02 16:34:14 -07:00
AndroidVersions.md Add document of changes between Android versions. 2019-10-15 18:33:11 -07:00
ArmExidx.cpp Fix handling of load bias values. 2018-06-11 18:53:55 -07:00
ArmExidx.h Fix handling of load bias values. 2018-06-11 18:53:55 -07:00
AsmGetRegsX86.S Fix wrong mov instruction size. 2018-01-25 11:44:19 -08:00
AsmGetRegsX86_64.S Add full support for initing registers. 2017-07-11 12:15:54 -07:00
Check.h Add error propagation into Unwinder/Elf objects. 2018-01-24 17:50:46 -08:00
DexFile.cpp Avoid re-mapping dex file that's in local memory. 2020-04-07 18:07:38 -07:00
DexFile.h Avoid re-mapping dex file that's in local memory. 2020-04-07 18:07:38 -07:00
DexFiles.cpp Move the dexfile support to implementation. 2019-11-20 14:59:55 -08:00
DwarfCfa.cpp libunwindstack: support for Armv8.3-A Pointer Authentication 2020-07-14 13:31:59 -07:00
DwarfCfa.h libunwindstack: support for Armv8.3-A Pointer Authentication 2020-07-14 13:31:59 -07:00
DwarfDebugFrame.h Fix potential bad info in eh_frame_hdr. 2019-10-29 18:39:30 -07:00
DwarfEhFrame.h Fix potential bad info in eh_frame_hdr. 2019-10-29 18:39:30 -07:00
DwarfEhFrameWithHdr.cpp Fix potential bad info in eh_frame_hdr. 2019-10-29 18:39:30 -07:00
DwarfEhFrameWithHdr.h Fix potential bad info in eh_frame_hdr. 2019-10-29 18:39:30 -07:00
DwarfEncoding.h Make the library usable as a library. 2017-07-14 12:20:23 -07:00
DwarfMemory.cpp Handle when bias is different in elf headers. 2019-10-08 17:36:06 +00:00
DwarfOp.cpp libunwindstack: Move DwarfOp callback table to rodata section 2019-01-24 11:11:15 -08:00
DwarfOp.h libunwindstack: Move DwarfOp callback table to rodata section 2019-01-24 11:11:15 -08:00
DwarfSection.cpp libunwindstack: Support signal frame CIEs. 2020-10-02 16:34:14 -07:00
Elf.cpp libunwindstack: Support signal frame CIEs. 2020-10-02 16:34:14 -07:00
ElfInterface.cpp libunwindstack: Support signal frame CIEs. 2020-10-02 16:34:14 -07:00
ElfInterfaceArm.cpp libunwindstack: Support signal frame CIEs. 2020-10-02 16:34:14 -07:00
ElfInterfaceArm.h libunwindstack: Support signal frame CIEs. 2020-10-02 16:34:14 -07:00
Global.cpp Fix global finding logic. 2020-01-21 18:00:57 -08:00
JitDebug.cpp Internalize subclasses of Memory 2019-06-11 12:09:18 -07:00
LocalUnwinder.cpp libunwindstack: Support signal frame CIEs. 2020-10-02 16:34:14 -07:00
Log.cpp Make the library usable as a library. 2017-07-14 12:20:23 -07:00
MapInfo.cpp Properly handle empty map after read-only map. 2020-01-22 18:30:12 -08:00
Maps.cpp Fix dangling pointer issue in LocalUpdatbleMaps 2020-05-01 22:20:01 +00:00
Memory.cpp Merge "Optimize Memory::ReadString" 2020-04-20 23:35:42 +00:00
MemoryBuffer.h Fix handling of possible bad gnu_debugdata_size. 2019-12-19 16:48:15 -08:00
MemoryCache.h libunwindstack: Add Memory::ReadTag() function for reading memory tags. 2020-04-16 00:23:45 -07:00
MemoryFileAtOffset.h Internalize subclasses of Memory 2019-06-11 12:09:18 -07:00
MemoryLocal.h libunwindstack: Add Memory::ReadTag() function for reading memory tags. 2020-04-16 00:23:45 -07:00
MemoryMte.cpp Switch to new kernel ptrace interface for reading tags. 2020-04-29 09:33:53 -07:00
MemoryOffline.h Internalize subclasses of Memory 2019-06-11 12:09:18 -07:00
MemoryOfflineBuffer.h Internalize subclasses of Memory 2019-06-11 12:09:18 -07:00
MemoryRange.h Internalize subclasses of Memory 2019-06-11 12:09:18 -07:00
MemoryRemote.h libunwindstack: Add Memory::ReadTag() function for reading memory tags. 2020-04-16 00:23:45 -07:00
OWNERS Add OWNERS. 2017-12-07 13:30:03 -08:00
Regs.cpp Make GetPcAdjustment a free function. 2020-03-19 17:51:20 -07:00
RegsArm.cpp Make GetPcAdjustment a free function. 2020-03-19 17:51:20 -07:00
RegsArm64.cpp libunwindstack: support for Armv8.3-A Pointer Authentication 2020-07-14 13:31:59 -07:00
RegsInfo.h Fix off by one error. 2018-10-23 18:10:41 +01:00
RegsMips.cpp Make GetPcAdjustment a free function. 2020-03-19 17:51:20 -07:00
RegsMips64.cpp Make GetPcAdjustment a free function. 2020-03-19 17:51:20 -07:00
RegsX86.cpp Make GetPcAdjustment a free function. 2020-03-19 17:51:20 -07:00
RegsX86_64.cpp Fix x86_64 check for signal handler. 2020-09-17 14:19:54 -07:00
Symbols.cpp Create minimal remap table for symbol binary search. 2020-04-16 18:17:45 +01:00
Symbols.h Create minimal remap table for symbol binary search. 2020-04-16 18:17:45 +01:00
TEST_MAPPING libunwindstack: add simpleperf presumit test. 2020-01-24 11:51:30 -08:00
Unwinder.cpp libunwindstack: Support signal frame CIEs. 2020-10-02 16:34:14 -07:00