On Thu, 7 Apr 2005, Magnus Damm wrote:
> On Apr 6, 2005 4:28 PM, Malcolm Rowe <[email protected]> wrote:
> > Magnus Damm writes:
> > > And I guess the idea of replacing the initcall pointer with NULL will
> > > work both with and without function descriptors, right? So we should
> > > be safe on IA64 and PPC64.
> >
> > I think so, though I don't really know a great deal about this area.
> >
> > An IA64 descriptor is of the form { &code, &data_context }, and a function
> > pointer is a pointer to such a descriptor. Presumably, setting a function
> > pointer to NULL will either end up setting the pointer-to-descriptor to NULL
> > or the code pointer to NULL, but either way, I would expect the 'if
> > (!*call)' comparison to work as intended.
> >
> > Best thing would be to get someone on IA64 and/or PPC64 to check this for
> > you.
>
> I agree. Do we have any friendly IA64/PPC64 user out there?
In C code it is consistent across all architectures, you only have to
worry about the descriptors when you do modifications in assembly.
Zwane
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