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platform_system_core/libunwindstack/include/unwindstack
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Christopher Ferris f0c82e7bad Use elf offset in signal step check. 
The function StepIfSignalHandler assumed that the rel_pc passed
to it was actually an elf offset. A new version of clang created a libc.so
that has a load bias, so tests unwinding through a signal handler
would fail on arm. On other ABIs, there is unwind information that could
be used instead, so the unwind still worked.

The fix is to subtract the load bias from the rel_pc to get an elf
offset to pass to the Register StepIfSignalHandler functions. Change all
of the Register funtions to make it clear what the first parameter means.

Add a unit test for this new code. Also, add an offline test for
this case.

Bug: 145683525

Test: Ran unit tests using the new clang and the old clang.
Change-Id: I3e249653b79bcad6d3a56411a7911fde4888e9d6
2019-12-04 22:29:59 +00:00
..
DexFiles.h Revert "Check for data races when reading JIT/DEX entries." 2019-04-05 18:23:32 +00:00
DwarfError.h Add error propagation into Unwinder/Elf objects. 2018-01-24 17:50:46 -08:00
DwarfLocation.h Cache DWARF location rules for a given pc. 2018-03-29 14:47:13 +00:00
DwarfMemory.h Handle when bias is different in elf headers. 2019-10-08 17:36:06 +00:00
DwarfSection.h Fix potential bad info in eh_frame_hdr. 2019-10-29 18:39:30 -07:00
DwarfStructs.h
Elf.h Fix support finding global variables. 2019-12-03 17:35:00 -08:00
ElfInterface.h Fix support finding global variables. 2019-12-03 17:35:00 -08:00
Error.h Fix pc/function name for signal handler frame. 2019-04-12 17:23:18 -07:00
Global.h Fix support finding global variables. 2019-12-03 17:35:00 -08:00
JitDebug.h Revert "Check for data races when reading JIT/DEX entries." 2019-04-05 18:23:32 +00:00
LocalUnwinder.h Add a specialized LocalUnwinder object. 2018-05-23 20:02:30 -07:00
Log.h
MachineArm.h Expose per arch headers. 2018-02-08 19:29:08 -08:00
MachineArm64.h Include PSTATE in tombstones on arm64. 2019-11-18 17:57:37 -08:00
MachineMips.h Expose per arch headers. 2018-02-08 19:29:08 -08:00
MachineMips64.h Expose per arch headers. 2018-02-08 19:29:08 -08:00
MachineX86.h Expose per arch headers. 2018-02-08 19:29:08 -08:00
MachineX86_64.h Expose per arch headers. 2018-02-08 19:29:08 -08:00
MapInfo.h Handle when bias is different in elf headers. 2019-10-08 17:36:06 +00:00
Maps.h Fix LocalUpdatableMaps 2019-09-16 18:28:38 -07:00
Memory.h Internalize subclasses of Memory 2019-06-11 12:09:18 -07:00
Regs.h Use elf offset in signal step check. 2019-12-04 22:29:59 +00:00
RegsArm.h Use elf offset in signal step check. 2019-12-04 22:29:59 +00:00
RegsArm64.h Use elf offset in signal step check. 2019-12-04 22:29:59 +00:00
RegsGetLocal.h Allow to get raw register data on all platforms. 2018-08-08 11:19:41 +01:00
RegsMips.h Use elf offset in signal step check. 2019-12-04 22:29:59 +00:00
RegsMips64.h Use elf offset in signal step check. 2019-12-04 22:29:59 +00:00
RegsX86.h Use elf offset in signal step check. 2019-12-04 22:29:59 +00:00
RegsX86_64.h Use elf offset in signal step check. 2019-12-04 22:29:59 +00:00
UcontextArm.h Expose per arch headers. 2018-02-08 19:29:08 -08:00
UcontextArm64.h Expose per arch headers. 2018-02-08 19:29:08 -08:00
UcontextMips.h Expose per arch headers. 2018-02-08 19:29:08 -08:00
UcontextMips64.h Expose per arch headers. 2018-02-08 19:29:08 -08:00
UcontextX86.h Expose per arch headers. 2018-02-08 19:29:08 -08:00
UcontextX86_64.h Expose per arch headers. 2018-02-08 19:29:08 -08:00
Unwinder.h Move the dexfile support to implementation. 2019-11-20 14:59:55 -08:00
UserArm.h Expose per arch headers. 2018-02-08 19:29:08 -08:00
UserArm64.h Expose per arch headers. 2018-02-08 19:29:08 -08:00
UserMips.h Expose per arch headers. 2018-02-08 19:29:08 -08:00
UserMips64.h Expose per arch headers. 2018-02-08 19:29:08 -08:00
UserX86.h Expose per arch headers. 2018-02-08 19:29:08 -08:00
UserX86_64.h Expose per arch headers. 2018-02-08 19:29:08 -08:00