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Re: MIPS patch to avoid lazy binding in la macros
On Sat, Feb 22, 2003 at 04:22:30PM +0000, Richard Sandiford wrote:
> Alexandre Oliva <aoliva at redhat dot com> writes:
> > On Feb 20, 2003, Richard Sandiford <rsandifo at redhat dot com> wrote:
> > > But due to a suspect feature, gas treats
> >
> > > la $25,foo
> >
> > > as a special case and allows foo to be lazily bound. Not the
> > > desired effect. ;)
> >
> > How about doing the lazy binding but, if you find any intervening use
> > of $25 between the la and the jump to $25, you force early binding?
>
> Please no ;) I think the worst thing we can do is build yet
> more hacks on top of what we already have. The mips reloc code
> is hairy enough as it is.
>
> Hmm. I see you're responding to my first message. As I said
> in a follow-up, I think we should stop gcc splitting the jal
> macro in final. Sound reasonable?
If you do this, you introduce another required version binding between
GCC and binutils to create a working MIPS toolchain; and it has some
degree of ABI impact.
Those aren't reasons not to do it, but please do consider them.
--
Daniel Jacobowitz
MontaVista Software Debian GNU/Linux Developer