PERFORCE change 133911 for review
Peter Grehan
grehan at freebsd.org
Fri Jan 25 09:09:17 PST 2008
> I'd rather hoped to run the Cisco stuff using EABI, which doesn't need
> fp emulation in the kernel...
EABI to my mind only helps in ultra-tight embedded environments, which
I don't think exist anymore. 8-byte vs 16-byte stack alignment isn't
going to help anyone.
And if embedded environments are using a lot of soft-float, they are
running on the wrong type of CPU. Trapping to the kernel should be
infrequent, and it does allow a single ABI for all processor types.
GCC will generate floating point instructions for data copying in
contrived situations, but there are none in base FreeBSD/ppc.
My $0.02 ..
later,
Peter.
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