In message <mtuacgiuzle.fsf@contents-vnder-pressvre.mit.edu>, "Nathan J. Willia
ms" writes:
>seebs@plethora.net (Peter Seebach) writes:
>> On some BSD somewhere, I was once told to use floating point emulation in
>> the kernel so that the kernel wouldn't have to save and restore floating
>> point registers as often when processing system calls.

>Right. By convention, the kernel isn't supposed to use hardware FP
>resources.

Okay.

>> The MATH_EMULATE stuff in options(4) seems to imply that this option
>> is useless unless your hardware lacks hardware floating point
>> entirely.

>MATH_EMULATE is for the kernel to trap and emulate userspace FPU
>instructions on processor families that might or might not have FPUs,
>such as PowerPC or MIPS.

Oh!

So the kernel already DTRT anyway?  Or is this a separate option, such
as -msoft-float?

-s