Date: Fri, 19 Feb 1999 22:21:50 -0700 From: Wes Peters <wes@softweyr.com> To: Terry Lambert <tlambert@primenet.com> Cc: Dag-Erling Smorgrav <des@flood.ping.uio.no>, hackers@FreeBSD.ORG Subject: Re: [Alfred Perlstein <bright@cygnus.rush.net>] Re: vm_page_zero_fill Message-ID: <36CE466E.E29A845A@softweyr.com> References: <199902200050.RAA15634@usr02.primenet.com>
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Terry Lambert wrote:
>
> I think that we would do well to provide C code, wherever possible,
> for all assmebly language code, no matter how suboptimal this ends
> up being.
>
> The reason for this is portability to new platforms becomes more
> immediate, though less optimal. The assembly code can later be
> "back filled", as necessary, as an optimization.
>
> The ugliest place for this type of thinking is locore.s and the bios
> crap, but it would speed inclusion of new platforms, and is probably
> worth the effort.
Depending on the architecture in question, this might not even be
that much of a loss. Architectures that have ONLY memory-mapped
I/O, for instance, suffer less from low-level C code.
--
"Where am I, and what am I doing in this handbasket?"
Wes Peters Softweyr LLC
http://www.softweyr.com/~softweyr wes@softweyr.com
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