[PATCH] libdw: Handle GNU DebugFission split ranges.

[Mark Wielaard]

On Sat, May 19, 2018 at 04:03:51PM +0200, Mark Wielaard wrote:
> GNU DebugFission split dwarf handles DW_FORM_sec_offset specially for
> attributes that point to ranges. The .debug_ranges section is not in
> the .dwo file, but in the main/skeleton object file. The sec_offset is
> not relocated (in the ELF file), but is an offset against the skeleton
> DIE DW_AT_GNU_ranges_base attribute. dwarf_formudata is changed so it
> still looks like a normal offset ptr into the .debug_ranges section.
> dwarf_ranges is adapted to look for the .debug_ranges in the main object
> file. dwarf_highpc and dwarf_lowpc now handle the highpc and lowpc
> attributes being inherited for the split unit DIE from the skeleton.
> 
> A new testcase is added to iterate over all ranges in a split GNU
> DebugFission file.

Pushed to master.