Date: Sun, 18 Oct 1998 11:54:08 -0500 From: Tom Jackson <toj@gorilla.net> To: Peter Wemm <peter@netplex.com.au>, Mike Smith <mike@smith.net.au> Cc: Karl Pielorz <kpielorz@tdx.co.uk>, Chuck Robey <chuckr@mat.net>, freebsd-current@FreeBSD.ORG Subject: Re: panic Message-ID: <19981018115408.A4680@TOJ.org> In-Reply-To: <199810180655.OAA17728@spinner.netplex.com.au>; from Peter Wemm on Sun, Oct 18, 1998 at 02:55:56PM %2B0800 References: <199810180538.WAA09998@dingo.cdrom.com> <199810180655.OAA17728@spinner.netplex.com.au>
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Peter,
With the patch, I get the printf MATH_EMULATE activated. All the faults are
the same. I missed one:
recording kernel -c changes
additional daemons: syslogdOct 18 11:15:20 slim /kernel.math: pid 10 (fsck),
uid 0:exited on signal 10
When I am finally running, top faults with signal 10, ps functions okay.
I also noticed a lockup of the boot loader at the loader prompt for the first
time. Had to use reset to free it.
On Sun, Oct 18, 1998 at 02:55:56PM +0800, Peter Wemm wrote:
> Mike Smith wrote:
> > > *Bingo* no ahh shit! That fixed me here.
> > >
> > > I'm began running gpl_math_emulate so that the rc5des client would run on
> > > the Thinkpad. For your amusement, here's what I get if I change back to the
> > > straight math_emulate:
> > >
> > > -normal probes and swapon-
> > > /dev/wd0s1a: clean, 10064 [pid 10 (fsck),uid 0: exited on signal 10]
> > > Bus error
> >
> > Actually, that almost looks like no math emulator at all; there's an FP
> > calculation performed to print those stats, but it's just simple
> > division and the old emulator used to get that more or less right.
>
> Hmm.. I don't have any machines that don't have a FPU..
>
> However, in trap.c, if there was no math emulator loaded, I'd have
> expected a SIGFPE, not a SIGBUS:
> if (!pmath_emulate) {
> i = SIGFPE;
> ucode = FPE_FPU_NP_TRAP;
> break;
> }
>
> Just to satisfy my curiosity, I'd like somebody to try this:
> Index: math_emulate.c
> ===================================================================
> RCS file: /home/ncvs/src/sys/i386/i386/math_emulate.c,v
> retrieving revision 1.28
> diff -c -3 -r1.28 math_emulate.c
> *** math_emulate.c 1998/10/16 03:54:59 1.28
> --- math_emulate.c 1998/10/18 06:45:32
> ***************
> *** 1578,1585 ****
> case MOD_LOAD:
> if (pmath_emulate)
> printf("Another Math emulator already present\n");
> ! else
> pmath_emulate = math_emulate;
> break;
> case MOD_UNLOAD:
> if (pmath_emulate != math_emulate) {
> --- 1578,1587 ----
> case MOD_LOAD:
> if (pmath_emulate)
> printf("Another Math emulator already present\n");
> ! else {
> pmath_emulate = math_emulate;
> + printf("MATH_EMULATE activated\n");
> + }
> break;
> case MOD_UNLOAD:
> if (pmath_emulate != math_emulate) {
>
> And make sure that it's actually being initialized...
>
> Cheers,
> -Peter
>
>
>
--
Tom
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