On Wed, Jul 08, 2015 at 11:22:34AM -0500, Josh Poimboeuf wrote:
> On Wed, Jul 08, 2015 at 05:36:31AM -0500, Segher Boessenkool wrote:
> > On Wed, Jul 08, 2015 at 11:23:09AM +0200, Martin Jambor wrote:
> > > > For other archs, e.g. x86-64, you can do
> > > >
> > > > register void *sp asm("%sp");
> > > > asm volatile("call func" : "+r"(sp));
I've found that putting "sp" in the clobber list also seems to work:
asm volatile("call func" : : : "sp");
This syntax is nicer because it doesn't need a local variable associated
with the register. Do you see any issues with this approach?
--
Josh
