Re: Identifying PowerPC architecture

[Michael Eager <eager at eagercon dot com>]

Daniel Jacobowitz wrote:
> On Thu, Jan 11, 2007 at 12:46:55PM -0800, Michael Eager wrote:
> > I'm looking at how gdb decides which arch/mach it is
> > working with for PowerPC.  It looks like it always picks up
> > rs6000:6000 as processor type.
> >
> > When rs6000_gdbarch_init(struct gdbarch_info info,
> > struct gdbarch_list *arches) is called, arches is NULL.
> > As a result, it creates up a default arch/mach based on
> > info.bfd_arch_info.
>
> ->arches is a list of previously initialized gdbarches.  They're
> initialized by other calls to rs6000_gdbarch_init.

I don't see where that happens, but I'll take your word.

> gdbarch_list_lookup_by_info will only return something with the
> same bfd_arch_info as it is passed.
>
> So, if you're not getting the right arch, you're probably not
> starting with the right bfd_arch_info.  I don't know if PowerPC
> tags binaries with the processor; I don't remember any such markings
> for PowerPC.

Nope, there's no model info for PowerPC in the ELF file.

--
Michael Eager	 eager@eagercon.com
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