__divdi3 unresolved + X pointer blocks

When compiling linux.2.4.6-pre6 (benh kernel), I get undefinded symbol
__divdi3 in the fat.o module.  When I suppress module fat.o, kernel
doesn't boot.  Please help! (My c-compiler is gcc-3.0-20010427pre_0a,
libc is glibc-2.1.3-15f.)

Second (disconnected) problem: when running X11 4.0.99.3
on my tibook with 2.4.5-pre3g4, the pointer is blocked when kde
starts. After snooze+wakeup, the pointer get unblocked and the
system works? Big thanks for any idea.

-JJ-

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From: Jean-Jacques Levy <redacted>
To: linuxppc-dev@lists.linuxppc.org
Subject: __divdi3 unresolved + X pointer blocks
Date: Mon, 2 Jul 2001 16:31:55 -0400

When compiling linux.2.4.6-pre6 (benh kernel), I get undefinded symbol
__divdi3 in the fat.o module.  When I suppress module fat.o, kernel
doesn't boot.  Please help! (My c-compiler is gcc-3.0-20010427pre_0a,
libc is glibc-2.1.3-15f.)

Plaese update gcc-3.0 release or current gcc-3.0.1.pre from cvs.

I guess,our powerpc kernel doen't use __divdi3 ,
then I could not see the symbol when on top kernel source
I did
 grep -rn __divi3 *


Kaoru


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Finally my kernel 2.4.6-pre6 (benh) still does not boot on my tibook
but problem must be elsewhere now.

My current rsync should boot the tibook. Please give it a try using
the included .config and tell me, I plan to do a binary release of
that kernel.

Ben.


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Kaoru,

I installed gcc-3.0 release, and remained with my undefined
__divdi3. Then I patched inode.c in fs/fat and replaced two divisions
by 512 by >> 9. The error disapeared.

Either gcc-3.0 has a bug, either there is a missing module to
implement long divisions (by 512!) in fs/fat.o

Finally my kernel 2.4.6-pre6 (benh) still does not boot on my tibook
but problem must be elsewhere now.

-JJ-

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Hi all,

On   4 Jul, this message from Benjamin Herrenschmidt echoed through cyberspace:

quoted

Finally my kernel 2.4.6-pre6 (benh) still does not boot on my tibook
but problem must be elsewhere now.

My current rsync should boot the tibook. Please give it a try using
the included .config and tell me, I plan to do a binary release of
that kernel.

Leave out the Thermal Management then (like it's done in your .config):
that seems to be the culprit for the recently reported crashes on the
TiBook. Just compared your 2.4.6 with and without Thermal: it's quite
clear ;-)

Haven't looked at why that is so, however.

Cheers

Michel

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Sorry for the delay, but presently I'm out of office.

I tried your config (or what I think is your config) with
2.4.6-pre6. It didn't boot. Open Firmware answer (called
by yaboot): DEFAULT CATCH! code = 300 %SRR0 01016cf8 $SRR! 00003030
I cannot decipher OF msgs.

Maybe it was not your config, because I erase it at some point. If
necessary I can mail it.

-JJ-

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