Re: Sharp Zaurus sl-6000 & Tomcat 5.x

On Thu, 2006-04-13 at 03:41 +0200, Michael 'Mickey' Lauer wrote:
> HardFloat: a floating point operation generates a trap instruction which
> the kernel intercepts and handles. This needs context switches and the
> FPU emulation in the kernel is old and slow.
> 
> SoftFloat: gcc/glibc insert appropriate instructions which handle FPU
> operations "in-place", no trap instruction, no context switch, no kernel
> involved. This is 1000% faster.

This is an excellent description.  Thank you.

Couldn't the kernel continue to handle FPU traps as usual?  That way,
apps that are recompiled to use softfpu become MUCH faster but current
hardfpu binaries would continue to work.

    - Scott





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