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Re: PowerPC 405 support
- From: Daniel Jacobowitz <drow at false dot org>
- To: Michael Eager <eager at eagercon dot com>
- Cc: gdb at sources dot redhat dot com
- Date: Fri, 23 Jun 2006 22:57:32 -0400
- Subject: Re: PowerPC 405 support
- References: <449CA2CE.3020100@eagercon.com>
On Fri, Jun 23, 2006 at 07:26:22PM -0700, Michael Eager wrote:
> I was looking at adding support to GDB for a variant of
> the PPC 405. This variant has several added instructions
> but is otherwise the same, i.e., has the same registers, etc.
>
> I thought I'd add a processor type named Xppc405 or ppc405X
> for this variant. Then I noticed that the 405 is really
> not supported as a variant, but the 403 is, and that the 403
> has extensions (and at least one hack) for the 405. There
> are opcodes defined for PPC405, but this symbol is aliased
> to PPC403.
>
> It looks pretty straight-forward to create a ppc405 variant
> and unalias it from the ppc403. Then create a ppc405X
> variant which builds on the ppc405. Any reason not to do
> this?
I'm going to guess here, but probably this would be a better suited
question for binutils@. GDB doesn't really have much knowledge about
PPC variants, just the bits it inherits from libopcodes.
--
Daniel Jacobowitz
CodeSourcery