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Date: Wed, 18 Jun 2008 18:05:07 +0200
From: Benjamin ZORES <benjamin.zores@domain.hid>
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Subject: Re: [Xenomai-core] [PowerPC] Registers Corruption at Context Switch
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Philippe Gerum a =E9crit :
> See arch/powerpc/switch_32.S, rthal_switch_threads(), for the part that=
 does the
> actual stack switching.
>
> Note that this code is obfuscated by the fact that we have to handle so=
-called
> "hybrid" switching, between Xenomai kernel threads (which do not rely o=
n a
> task_struct), and Linux tasks (Xenomai userland, Linux kthreads, or reg=
ular
> userland Linux). Fortunately, what is saved on the stack in any case is=
 easy to
> find out.
>  =20
Thx for the info.
Can you tell me why GPR registers would be saved there and FPU ones in=20
another function ?

Ben