On 02/03/2016 11:56, Thomas Huth wrote:
> > > +
> > > + asm volatile (" sc 1 " : "+r"(r3), "=r"(r4) : "r"(r3));
> >
> > as you use "+r" with r3 in the output operands field, I think you don't
> > have to declare it in the input operands field.
>
> Ah, ok, ... gcc inline assembly is always confusing...
> Paolo, Andrew, shall I sent a new version for fixing this nit, or is it
> ok to keep it in the current, slightly redundant shape?
I guess the current one is fine because of the asm register in the
declarations.
The "really correct" one would use "=r" in the r3 output and "0" in the
r3 input, I think.
Paolo
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