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Re: PowerPC gas -many
On Tue, Sep 02, 2003 at 10:07:19AM -0500, Kumar Gala wrote:
> I understand all this. I guess my question is as a developer trying
> what is the rule of thumb with regards to -many?
OK, that has changed. The results are the same as for plain "as" if you
use mnemonics that plain "as" understands. Extra mnemonics allowed by
"-many" are chosen according to their ordering in powerpc_opcodes.
> For example, which mftb should work with just 'as -many', the classic
> or book-e form?
*-aix*-as doesn't understand the classic form without -many, so you'd
get the booke form. Other powerpc*-*-as understand the classic form
without -many so that's what you get. Previously, -many wouldn't
accept mftb at all.
Hmm, I see your point. Some re-ordering of the opcode table would be
a good idea, so that -many is a little more consistent.
--
Alan Modra
IBM OzLabs - Linux Technology Centre