[PAHOLE v5 0/5] support for DW_TAG_GNU_annotation and fixes

Hi,

This series handles gcc generated DW_TAG_GNU_annotation with the end
goal to finally enable CONFIG_PAHOLE_HAS_BTF_TAG for gcc kerenel builds.

Patches 1/5 and 5/5 are newly introduced in v5 per Alan's ask.

P.S.: I've optimistically included Reviewed-by/Acked-by from Emil and
Yonghong respectively on v4 [4] but those were before additional changes
in v5 from Alan for a few things. Please let me know if that's no longer
true.

[4] https://lore.kernel.org/bpf/[email protected]/

Thx,
-Vineet

Alan Maguire (2):
  btf_loader: Handle decl tag component_idx for parameters
  tests: Add btf_type_tag ordering test

Vineet Gupta (3):
  dwarf_loader: Extract die__add_btf_type_tag() helper [NFC]
  dwarf_loader: Add support for DW_TAG_GNU_annotation
  tests: Support GCC in pfunct-btf-decl-tags test

 btf_encoder.c                 |   1 +
 btf_loader.c                  |  46 ++++++++-
 dutil.h                       |  11 ++
 dwarf_loader.c                | 185 +++++++++++++++++++++++++++-------
 dwarves.h                     |   2 +-
 dwarves_fprintf.c             |  32 ++++--
 tests/btf_type_tag_order.sh   | 179 ++++++++++++++++++++++++++++++++
 tests/pfunct-btf-decl-tags.sh |  93 ++++++++++++-----
 8 files changed, 478 insertions(+), 71 deletions(-)
 create mode 100755 tests/btf_type_tag_order.sh

-- 
2.54.0