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Subject: RE: Optimized bitswap
From: Nielsen Linus (ext) (Linus.Nielsen_at_elema.siemens.se)
Date: 2002-08-20


> I've done some work with bitswap (and fliptable) in a
> separate .S file (easier that way, IMO), and I have something
> that builds, but crashes at some unkown location (not in
> bitswap). Don't know where yet, but I guess somewhere in
> mpeg.c. It's difficult to pinpoint with next to no debug facilities...

OK. What is the error? And when does it happen?

> From what I've gathered, I get data in r4 and length in r5.
> Do any registers need to be saved (doesn't work if I save or
> not though)?

You have to save all registers from r8 and up.

/Linus



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