Bug#489019: Vortex86SX chip

[Petr Salinger <Petr.Salinger@seznam.cz>]

> > Once again, what is the kernel of your TARGET system, i.e. on Vortex86SX 
> > chip. Is it really 2.6.25.5 with FPU emulation enabled ?
> Yes, the kernel for the TARGET system is 2.6.25.5 from Kernel.org with no 
> patches and with FPU emulation enabled.
> > Or 2.6.25.5 is version available on the system, where you are building 
> > packages ?
> > How did you installed debian/libraries to the TARGET system.
> > By dpkg -i, or by copying some files ?
> I prepared the whole target system by copying files, using my custom built 
> busybox binary.


As far as I know, there are only 3 userspace instruction added by i486
compared to i386 - CMPXCHG, XADD, BSWAP.
Are they supported by Vortex86SX chip ?

Please, compile and run code bellow on Vortex86SX chip.

Also you can try to

1) create on your Vortex86SX system sarge chroot by debootstrap,
  i.e in /sarge by standard debian tools. This way you shoul get clean,
  standard debian environment.

2) point /etc/apt/sources.list to sarge, install gdb in /sarge

3) copy created /sarge chroot to /lenny

4) point /etc/apt/sources.list to lenny and try to upgrade


Petr

****************************

int main()
{
 int eax, mem;

 __asm__ __volatile__(
   "bswap %0\n\t"
   "cmpxchg  %0,%1\n\t"
   "xadd %0,%1"
                :"=r" (eax)
                :"m" (mem), "0" (eax)
                :"memory");

}