On Sat, Aug 22, 2009 at 08:00:10PM +0200, Vladimir 'phcoder' Serbinenko wrote:
> On Mon, Aug 10, 2009 at 1:41 PM, Robert Millan<r...@aybabtu.com> wrote:
> > On Sat, Aug 08, 2009 at 10:44:25PM +0800, Bean wrote:
> >> Hi,
> >>
> >> I also encounter this problem with apple gcc 4.0, the fix is to replace:
> >>
> >> asm volatile ("jmp *%2" : : "b" (0), "S" (real_mode_mem), "g"
> >> (params->code32_start));
> >>
> >> With:
> >> asm volatile ("movl %0, %%ecx" : : "m" (params->code32_start));
> >> asm volatile ("movl %0, %%esi" : : "m" (real_mode_mem));
> >>
> >> asm volatile ("xorl %%ebx, %%ebx" : : );
> >> asm volatile ("jmp *%%ecx" : : );
> >
> > I think I did precisely the opposite change a while ago, with the purpose of
> > general cleanup (to make it more compact and avoid generating unnecessary
> > instructions).
> What about following compromise:
> [...]
I'm not sure what's the problem here. AFAIK inline assembly had this syntax
with GCC 4.0 already. Did Apple cripple it in their version of GCC ?
--
Robert Millan
The DRM opt-in fallacy: "Your data belongs to us. We will decide when (and
how) you may access your data; but nobody's threatening your freedom: we
still allow you to remove your data and not access it at all."
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