Re: MKSOFTFLOAT for evbppc
Matt Thomas <[email protected]>
| Newsgroups | gmane.os.netbsd.ports.powerpc |
|---|---|
| Message-ID | <[email protected]> |
On Sep 18, 2012, at 2:49 PM, Greg Troxel wrote:
>
> Apologies if I've asked about this before and forgotten the reason why
> it's a bad idea. I don't see anything at
> http://www.netbsd.org/ports/evbppc/
>
> We have some evbppc machines based on a P2020. That needs softfloat,
> and we have the following local change. Is this something that should
> be on by default, or are there lots of processors in the evbppc that
> have hw floating point? Or are there few, and those people should set
> MKSOFTFLOAT to no?
Most evbppc don't need softfloat so its not the default. When I started the
85xx support, I required softfloat and modified the toolchain to default to
-msoft-float if MKSOFTFLOAT was true.
> (Also, for the port page: does fp emulation via traps work? Or is
> MKSOFTFLOAT the only way that can possibly work?)
Within the past 4 months or so, I added emulation of the FPU so you can run without MKSOFTFLOAT=yes.
> --- bsd.own.mk.~1.706.~ 2012-08-21 12:21:05.000000000 -0400
> +++ bsd.own.mk 2012-09-18 17:45:05.000000000 -0400
> @@ -785,7 +785,7 @@ MKCOMPATMODULES:= no
> # emips is always softfloat.
> #
> .if ${MACHINE_ARCH} == "mips64eb" || ${MACHINE_ARCH} == "mips64el" || \
> - ${MACHINE} == "emips"
> + ${MACHINE} == "emips" || ${MACHINE} == "evbppc"
> MKSOFTFLOAT?= yes
> .endif
>