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| author | Yabin Cui <yabinc@google.com> | 2020-01-29 17:08:49 -0800 |
|---|---|---|
| committer | Elliott Hughes <enh@google.com> | 2020-07-14 13:34:45 -0700 |
| commit | 91784fd65b7314e5b296f07b8c487c506df17802 (patch) | |
| tree | 54d60479ab33135562040d93957c812428b8c92d /simpleperf/cmd_report.cpp | |
| parent | 3c5ea31c4dcd8b8f5d34cb97caa91692e4ca680b (diff) | |
| download | extras-91784fd65b7314e5b296f07b8c487c506df17802.tar.gz | |
simpleperf: support for ARMv8.3-A Pointer Autentication.
On devices enabling ARMv8.3-A pointer autentication, return
addresses may be signed with authentication code. And we need
to strip this code to unwind correctly, using a pac_mask got
from the same device.
Simpleperf supports recording and unwinding on different devices,
mainly for debugging and testing. To avoid breaking it, this
CL supports keeping pac_mask in perf.data and providing it to
libunwindstack when reporting.
Bug: none
Test: run simpleperf_unit_test.
Change-Id: I8a12a97efbe188599d5438099f8a58842a8f73eb
Diffstat (limited to 'simpleperf/cmd_report.cpp')
| -rw-r--r-- | simpleperf/cmd_report.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/simpleperf/cmd_report.cpp b/simpleperf/cmd_report.cpp index 3d5fad90..873819a3 100644 --- a/simpleperf/cmd_report.cpp +++ b/simpleperf/cmd_report.cpp @@ -860,6 +860,10 @@ bool ReportCommand::ReadSampleTreeFromRecordFile() { for (size_t i = 0; i < event_attrs_.size(); ++i) { sample_tree_builder_.push_back(sample_tree_builder_options_.CreateSampleTreeBuilder()); sample_tree_builder_.back()->SetEventName(event_attrs_[i].name); + OfflineUnwinder* unwinder = sample_tree_builder_.back()->GetUnwinder(); + if (unwinder != nullptr) { + unwinder->LoadMetaInfo(record_file_reader_->GetMetaInfoFeature()); + } } if (!record_file_reader_->ReadDataSection( |