RE: [microblaze-uclinux] [PATCH v2] microblaze: nommu: Don'tclobber R11 on syscalls

[Steven J. Magnani]

On Mon, 2009-12-14 at 14:50 -0800, Jim Van Vorst wrote:
> Isn't R11 a temporary?  If it doesn't need to be preserved across function
> calls, why can't it be clobbered during a syscall?

Because the Microblaze syscall macros don't include r11 in the clobber
list. I suppose an alternative solution would just change the userspace
macros and not the kernel, even though there is a bug in the kernel. 

Michal, is the Microblaze ABI considered "locked down" now, or is a
kernel solution still permitted?

------------------------------------------------------------------------
 Steven J. Magnani               "I claim this network for MARS!
 www.digidescorp.com              Earthling, return my space modulator!"

 #include <standard.disclaimer>



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