Date: Sun, 30 Nov 2014 17:12:38 +0800 From: Julian Elischer <julian@freebsd.org> To: Adrian Chadd <adrian@freebsd.org>, Steve Kargl <sgk@troutmask.apl.washington.edu> Cc: freebsd-current <freebsd-current@freebsd.org>, Bruce Evans <bde@zeta.org.au> Subject: Re: Possible bug in softfloat Message-ID: <547ADF86.8050806@freebsd.org> In-Reply-To: <CAJ-Vmo=PmNH0FcA%2B25KS%2Bos2VMVNKrasgvTa3FK6WB=Ric7MEA@mail.gmail.com> References: <20141128183416.GA71749@troutmask.apl.washington.edu> <CAJ-Vmok8xHjK0Vjh5JRKbvSUv=3Rs=jhgCtboYbXPVc_yHii1A@mail.gmail.com> <20141128190721.GA71860@troutmask.apl.washington.edu> <CAJ-Vmo=PmNH0FcA%2B25KS%2Bos2VMVNKrasgvTa3FK6WB=Ric7MEA@mail.gmail.com>
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On 11/29/14, 4:59 AM, Adrian Chadd wrote: > You can easily fire up a mips32 / mips64 emulator build - cross-build > a world+kernel, build an image, then run qemu-devel to boot it. > > https://wiki.freebsd.org/FreeBSD/MipsEmulation > > You should be able to get a 32 bit soft-float mips environment inside > there which you can use to trigger it. > (And also run whatever other floating point validation suite you may hvae.) I suspect this is one for bde to look at. > > > > -adrian > > > On 28 November 2014 at 11:07, Steve Kargl > <sgk@troutmask.apl.washington.edu> wrote: >> On Fri, Nov 28, 2014 at 10:54:25AM -0800, Adrian Chadd wrote: >>> On 28 November 2014 at 10:34, Steve Kargl >>> <sgk@troutmask.apl.washington.edu> wrote: >>>> In a thread on comp.lang.c, it was pointed out that softfloat >>>> has a bug and in checking src/lib/libc/softfloat I confimed >>>> the issue is present in FreeBSD. What I hae not confirmed >>>> is whether or not it is possible to hit this bug. In fact, >>>> it may only hit arm and mips. Anyway, here's the patch >>> So we should just commit this? >>> >> I suspect the answer is yes, but I have no idea on how >> to trigger this code path. I also have no access to >> arm or mips hardware where the problem may manifest only. >> >> It may also be appropriate to have someone else confirm >> that the patch is indeed correct. >> >> -- >> steve > _______________________________________________ > freebsd-current@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org" > >
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