[RFC PATCH 0/2] rseq/selftests: debugger single-stepping helper sections

[Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxxxx>]

Hi,

Those RFC patches improves the rseq selftests to properly expose data
sections helping debuggers to step over rseq critical sections.

* Add a new __rseq_exit_point_array section describing all rseq critical
  section exit points so debuggers can properly step over those. This is
  based on discussions with gdb and DynamoRIO developers.

* The __rseq_table section contains structures that are aligned on 32
  bytes, and in some cases the entries may not be aligned with the
  beginning of the section. Rename this section to __rseq_cs, and create
  a new __rseq_cs_ptr_array section containing packed 64-bit pointers to
  those __rseq_cs entries.

Thanks,

Mathieu


Mathieu Desnoyers (2):
  rseq/selftests: Add __rseq_exit_point_array section for debuggers
  rseq/selftests: Introduce __rseq_cs_ptr_array, rename __rseq_table to
    __rseq_cs

 tools/testing/selftests/rseq/rseq-arm.h   |  80 +++++++++++++++++++----
 tools/testing/selftests/rseq/rseq-arm64.h |  57 +++++++++++++++-
 tools/testing/selftests/rseq/rseq-mips.h  |  81 +++++++++++++++++++----
 tools/testing/selftests/rseq/rseq-ppc.h   |  80 +++++++++++++++++++++--
 tools/testing/selftests/rseq/rseq-s390.h  |  65 +++++++++++++++++-
 tools/testing/selftests/rseq/rseq-x86.h   | 105 +++++++++++++++++++++++++++++-
 6 files changed, 435 insertions(+), 33 deletions(-)

-- 
2.11.0