[rfa] Add bfd_runtime

[Ian Lance Taylor]

Andrew Cagney <cagney@gnu.org> writes:

> But what of this:
> 
> > For runtime, bfd_map_over_sections needs to do something different again create a list of sections using offset information obtained from the segment table.
> > That can either be done in two stages; reverse map in-memory
> > segments to on-disk image, open pseudo on-disk image as an object
> > file; or a single direct stage where the "sections" describe the in
> > memory offsets.
> > The latter, which I think is an operation unlike any of the above,
> > is what I'm trying to implement.
> 
> Do you concure that the operation is unlike any of the above?

In terms of how the information is obtained, sure.  In terms of how
the information is used, no.

> > I'm not arguing for architecture-specific code.  The code should be
> > written in a generic way to support any architecture, and
> > elf32-i386-runtime would just be a modification of elf32-i386 which
> > called this new generic code to dig up the runtime information.
> 
> How?  Without adding to BFD's existing macro #include hell?  This is
> needed for all elf object formats.

You can use the pre-existing #include hell; you just need to add a
bfd_target at the end of elfxx-target.h.

Ian