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Re: bfd/cpu-powerpc.c problems
> I wasn't aware that gdb used bfd_lookup_arch in this way, and the
> > description of bfd_lookup_arch says nothing about the order of
> > entries in the list. I guess I can claim gdb is relying on
> > undocumented behaviour.
Well, there is nothing saying GDB can't exploit this and it works for
all other targets :-)
> Er... I'll let Cagney answer that. I think he did though...
GDB needs to be able to efficiently iterate over all machine variants
for a given architecture. If there is a documented interface added I
guess GDB can use it. Two come to mind:
bfd_lookup_arch (arch,-1) returns first, use ->next
bfd_map_over_arch (arch, ....) like map_over_sections
BTW, GDB also needs to know BFD's default architecture and BFD vector.
I asked about that a while back but didn't get any hints. It currently
uses, er, magic. (Knowing these defaults makes it possible for GDB to
start up with the same settings as binutils)