system_core/libbacktrace/backtrace_test.cpp, branch replicant-6.0

Display the map offset for each frame.

2015-08-20T18:16:54+00:00

The dlopen of a shared library in an apk results in large map offsets.
Unfortunately, the current way that the frame data is printed, it's
impossible to tell what the relative pc is relative to. With the
addition of the offset, it's possible to figure out what the relative
pc actually references.

Bug: 23348999
Change-Id: Ia51b669ea3f810158cfd0d71d9ae89bf9a3170d3

Add tests for elf unwinding in memory.

2015-05-13T20:44:47+00:00

Bug: 19517541
(cherry picked from commit 67aba6881d8857d3017e11695207eb2ade45a274)

Change-Id: I914636ccd814e041475b6b2d81119cac1745a9ff

Remove libbacktrace definition of gettid.

2015-05-13T20:44:34+00:00

Also simplifies the Darwin implementation of gettid, because
apparently libbacktrace had a better way of doing it.

Bug: 19517541

(cherry picked from commit 23f750b068ddf5b20fb5d153a798b22562368992)

Change-Id: I2f888e8ed7a2f5719973786cbcbb399a81867ee9

Fix small ptrace reads.

2015-05-07T02:08:52+00:00

The BacktracePtrace::Read function crashes if the number of bytes to
read is less than the number of bytes needed to align the read to
a word_t boundary.

Fix this and add a test for this case.

Change-Id: I50808849ece44928f65dba1d25309e3885c829a2
(cherry picked from commit 944f417ccb86441060ffb670b4bdc2975fda08fc)

Add load base to map for relocation packing.

2015-05-01T23:04:24+00:00

The new linker relocation packing support uses non-zero load bases,
so we better handle them properly.

Also print out the load base for a map if it's non-zero.

Bug: 20687795
Change-Id: Iec2d1db2051e7b4a278c1dfa57d745128a7f2974

Update the test for better output on error.

2015-04-02T22:36:09+00:00

Change-Id: Id3b0b96a33441ce5d908aac38e639ac3598a7a89

Discards frames for code within library.

2015-04-01T22:58:20+00:00

When doing a local unwind, do not include the frames that come
from either libunwind or libbacktrace.

Bug: 11518609
Change-Id: I0ec8d823aebbfa0903e61b16b7e5663f3fd65e78

Refactor the code.

2015-03-31T17:51:44+00:00

The object hierarchy was confusing and convoluted. This removes
a lot of unnecessary code, and consolidates the BacktraceCurrent
and BacktraceThread code into BacktraceCurrent.

Change-Id: I01c8407d493712a48169df49dd3ff46db4a7c3ae

Add variable length read to Backtrace.

2015-03-17T21:56:02+00:00

Included tests for this new feature.

Changed the NULLs to nullptr in backtrace_test.

Changed UniquePtr to std::unique_ptr in backtrace_test.

Change-Id: I92375465b8f8ba84589834cc162db5915bf1be81

Move map data into backtrace data proper.

2015-02-06T23:00:09+00:00

The backtrace structure used to include a pointer to a backtrace_map_t
that represented the map data for a particular pc. This introduced a
race condition where the pointer could be discarded, but the backtrace
structure still contained a pointer to garbage memory. Now all of the map
information is right in the structure.

Bug: 19028453
Change-Id: If7088a73f3c6bf1f3bc8cdd2bb4b62e7cab831c0