> In the Linux case mmio isn't a problem. The rules for mmio in the portable
> code require you use architecture dependant macros (readb etc) and that
> the mmio space is mapped via ioremap.
I haven't done my homework, but I assume the code behind readb use inline
assembly and not C on most platforms?
May be GNU C could get some of the idea behind the Linux macros
to define the needed extension (portable within GNU C architectures
-- Laurent Guerby <firstname.lastname@example.org>
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