On Wed, Apr 10, 2002 at 03:24:20PM -0700, Denis Serenyi wrote:
> After searching the hackers archives, I'm guessing that this is because 
> FreeBSD 4.3 does not execute the instructions at boot time to enable SSE 
> instructions to be executed, and also because FreeBSD 4.3 does not save 
> the 128-bit SIMD registers on context switches.
> 
> Am I correct in this assessment?

Yep.

> It also seems like this support has been added to FreeBSD 4.5. Is this 
> correct?

Yes - it was added before 4.4 I think.

> Assuming yes, in what release was SSE support added to FreeBSD? Has 
> anyone done a patch that can be applied to FreeBSD 4.3, or are the 
> changes non-trivial?

The commit message mentions:
        
        http://www.issei.org/issei/FreeBSD/sse.html
        http://kobe1995.net/~kaz/FreeBSD/SSE.en.html

and I think there are patches available for 4.3 from one of those
sites.

        David.

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