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Subject: Re: windows for AMD64 - MMX not 64-bit threadsafe

Author: Bo Persson

Date: 00:26:39 08/27/03

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On August 26, 2003 at 18:36:42, Dieter Buerssner wrote:

>On August 26, 2003 at 17:42:42, Gerd Isenberg wrote:
>
>>Porting Windows® Device
>>Drivers to AMD64 Platforms
>
>Strange. Is it only for Drivers? As Jeremiah, I cannot see, how a platform
>cannot save x87 registers while context switching. It would break many
>applications - not? No typical numerical code would work anymore.

There isn't much 64-bit native AMD code around, is there? :-)

I'm sure they will continue to preserve the registers for 32-bit code, which
needs the backward compatibility.

Bo Persson


>Regards,
>Dieter



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