hppa unwind entries

[Nick Clifton]

Hi Dave,

> I thought that was prudent when I did my change.  I had the impression
> that the original hppa code always expected a nonzero value.  I haven't
> hit a circumstance where the BFD_ASSERT triggered but testing has been
> somewhat limited.

Fair enough.  This is what I have checked in.

Cheers
   Nick

bfd/ChangeLog
2007-12-31  Nick Clifton  <nickc@redhat.com>

	* elf.c (_bfd_elf_find_segment_containing_section): New function:
	Scan the segment map looking for the segment containing a
	specified function.
	* elf-bfd.h: Prototype the new function.
	* elf-hppa.h (elf_hppa_osec_to_segment): Delete.
	(elf_hppa_record_segment_addrs): Use new function.
	* elf32-bfin.c (_bfdfdpic_osec_to_segment): Use new function.
	* elf32-frv.c (_frvfdpic_osec_to_segment): Use new function.
	* elf32-hppa.c (hppa_record_segment_addr): Use new function.
	* elfxx-ia64.c (elfNN_ia64_relocate_section): Use new function.
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