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author | Petr Machata <pmachata@redhat.com> | 2014-10-17 02:47:03 +0200 |
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committer | Petr Machata <pmachata@redhat.com> | 2014-11-10 15:45:00 +0100 |
commit | fb90bf3f84b5683bbc1f234ee05008ff26250e5c (patch) | |
tree | b29eb4c3b3ab559167fc8cacce36b99ef958c367 /tests/dwarf-getmacros.c | |
parent | d8b9682b1a5ff2746f172487eaf19ebd088bb7f4 (diff) | |
download | elfutils-fb90bf3f84b5683bbc1f234ee05008ff26250e5c.tar.gz |
Support .debug_macro
- This code is based on the following proposal:
http://www.dwarfstd.org/ShowIssue.php?issue=110722.1
- dwarf_getmacros serves either of .debug_macinfo or .debug_macro
transparently, but if the latter uses opcode 0xff, it bails out with
an error. The reason is that in .debug_macro, 0xff is a custom code
that can mean anything, while in .debug_macinfo there's fixed
semantics associated with 0xff.
- dwarf_getmacros_off is a new interface used for requesting iteration
through transparently included units.
- dwarf_macro_getparamcnt and dwarf_macro_param are new interfaces
used for requesting number of parameters of an opcode and individual
parameters. dwarf_macro_getsrcfiles is a new interface used for
requesting a file part of .debug_line unit associated with macro
unit that the opcode comes from.
- The existing interfaces dwarf_macro_opcode, dwarf_macro_param1 and
dwarf_macro_param2 remain operational for old- as well as new-style
Dwarf macro sections, if applicable.
- dwarf_getsrclines was made into a light wrapper around a worker
function that loads line unit given its offset. The worker also
caches loaded units in an offset-keyed search tree, so that we don't
end up re-reading units even though they were read in a different
domain (e.g. a macro unit request can prime cache for later CU
lookup). dwarf_macro_getsrcfiles calls the worker function under
covers.
Signed-off-by: Petr Machata <pmachata@redhat.com>
Diffstat (limited to 'tests/dwarf-getmacros.c')
0 files changed, 0 insertions, 0 deletions