Re: Post-increment constraint in inline assembly (SuperH)

[Georg-Johann Lay <avr@xxxxxxxx>]

On 29.01.2018 10:12, Andrew Haley wrote:
> On 29/01/18 09:05, Georg-Johann Lay wrote:
> > A different approach is to explicitly use post-increment if that's the
> > favourable addressing mode:
> >
> > __asm__ ("movua.l %1, @%0+"
> >            : "=z" (longword), "+r" (src)
> >            : "m" (*src)
>
> I'm not familiar with SuperH, but isn't src %1 in this asm, when it
> should be %0 ?

Yes, at least according to Segher's asm dump:

#APP
        movua.l @r4+, r0
#NO_APP

Hence the source should read something like

__asm__ ("movua.l @%1+, %0"
         : "=z" (longword), "+r" (src)
         : "m" (*src));

instead.  Thanks for spotting this.

Johann