Re: [PATCH 1/2] libdw: Add new function dwarf_cu_getdwarf.

[Dodji Seketeli <dodji at redhat dot com>]

Mark Wielaard <mjw@redhat.com> writes:

> In both systemtap and libabigail there is a need to get the actual Dwarf
> underlying an Dwarf_Die or Dwarf_Attribute. Following a DIE reference
> might end up in an alternate Dwarf since the addition of DWZ multifile
> forms. Both Dwarf_Die and Dwarf_Attribute already contain a Dwarf_CU
> handle. Add a function dwarf_cu_getdwarf to retrieve the underlying
> Dwarf using the Dwarf_CU.

Thanks Mark!

This, indeed, is going to be useful for libabigail at least.  This new
dwarf_cu_getdwarf function, along with the existing dwarf_diecu function
will allow us to get the actual Dwarf a given DIE comes from.  And with
the recently added dwarf_getalt function, we'll be able to tel if the
DIE comes from the alternate Dwarf or not.  This is awesome.

Thanks again.

Cheers.

-- 
		Dodji