>No, simply doing an fnclex will not do the trick.
>
>If you do not know the details of Xenomai and Linux FPU handling on x86,
>I advise you to let xenomai handle the fault, it does it without
>switching to secondary mode, so, you can use it. I do not want to
>explain you how it works because it is rather hairy, so, the only way to
>understand, if you really want to, is to read the xenomai and linux
>relevant sources.
I need to manage exceptions in a different way of the x86 default so I have to
unmask fpu exceptions. I have read and follow how it works but in xenomai fpu
exceptions invoke a switch to linux...
int xnpod_trap_fault(xnarch_fltinfo_t *fltinfo)
{
...
if (xnpod_shadow_p()) {
...
xnshadow_relax(xnarch_fault_notify(fltinfo));
}
return 0;
}
so there is not in the source code an example on how to trap exception and
remain into real time task...
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