Adding libdw DWARF post unwind support, which is part of elfutils-devel/libdw-dev package from version 0.158.
Also includes the test suite for dwarf unwinding, by adding the arch specific test code and the perf_regs_load function.
This series depends on the following kernel patches series: - AARCH64 unwinding support [1]. Already mainlined. - ARM libdw integration [2], and on the changes from the branch for: - libdw AARCH64 unwinding support [3].
[1] http://www.spinics.net/lists/arm-kernel/msg304483.html [2] https://lkml.org/lkml/2014/5/6/366 [3] https://git.fedorahosted.org/cgit/elfutils.git/log/?h=mjw/aarch64-unwind
ToDo: investigate the libdw unwinding problem with compat binaries (i.e. ARMv7 binaries running on ARMv8). Since this functionality works ok with libunwind, the problem should be in libdw compat support [3].
Jean Pihet (3): perf tests: Introduce perf_regs_load function on ARM64 perf tests: Add dwarf unwind test on ARM64 perf tools: Add libdw DWARF post unwind support for ARM64
tools/perf/Makefile.perf | 2 +- tools/perf/arch/arm64/Makefile | 7 ++++ tools/perf/arch/arm64/include/perf_regs.h | 5 +++ tools/perf/arch/arm64/tests/dwarf-unwind.c | 59 ++++++++++++++++++++++++++++++ tools/perf/arch/arm64/tests/regs_load.S | 39 ++++++++++++++++++++ tools/perf/arch/arm64/util/unwind-libdw.c | 53 +++++++++++++++++++++++++++ tools/perf/tests/builtin-test.c | 3 +- tools/perf/tests/tests.h | 3 +- 8 files changed, 168 insertions(+), 3 deletions(-) create mode 100644 tools/perf/arch/arm64/tests/dwarf-unwind.c create mode 100644 tools/perf/arch/arm64/tests/regs_load.S create mode 100644 tools/perf/arch/arm64/util/unwind-libdw.c
--- Rebased on the latest jolsa/perf/core