You can't compare *BSD or Linux with OS4 as the latter doesn't get all 3rd party programs recompiled with each OS release.
> users of this port also report that trapping fpu instructions on e500v2 [...] > has no impact on performance.
Do you have such link where performance of FPU-depending binaries on e500v2 is compared between FPU trapping and compilation for e500v2 and no difference is noticed?