Re: arm-pe: Do not generate type 2 LDM instructions with writeback

[Nick Clifton <nickc at redhat dot com>]

Hi Richard,

> I didn't think it was *that* old!  Anyway, it was a Cygnus
> contribution.  If you don't know of any users, perhaps we should
> deprecate it.
> 
> At present, it's what an arm-wince-pe configuration will try to
> select, and that is just broken (but in more ways than just this).

(After thinking about it a little more).  I do know that some people
are using the arm-wince-pe port, and contributing code for it.  Well
for binutils at least, but I am pretty sure that they are using gcc as
well.  So I think we can safely say that the arm-pe port is still
active.


> I agree (with making apcs-32) the default now, though if you don't mind 
> I'll save making that change until I've finished sorting out the VFP code 
> I'm trying to integrate.

That is fine with me.  [By the way I hope to be contributing the Intel
iWMMXt support in the near future.  Will this affect your VFP work ?
It shouldn't since the iWMMXt does not have a floating point
co-processor].


> Don't you also need to undo the output_return_instruction change?

No - we can generate a valid type 2 LDM in this case, if we have
an interrupt handler using apcs-32.

Cheers
        Nick