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Date: Fri, 10 May 1996 14:49:35 -0700
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To: current@freebsd.org, nisha@cs.berkeley.edu
In-reply-to: <199605101017.DAA00972@silvia.HIP.Berkeley.EDU> (asami@cs.berkeley.edu)
Subject: Re: some more on fast bcopy
From: asami@cs.berkeley.edu (Satoshi Asami)
Sender: owner-current@freebsd.org
X-Loop: FreeBSD.org
Precedence: bulk

I got a panic from -current during a make world last night.  Here it is:

===
>> gdb -k kernel.1 vmcore.1
GDB is free software and you are welcome to distribute copies of it
 under certain conditions; type "show copying" to see the conditions.
There is absolutely no warranty for GDB; type "show warranty" for details.
GDB 4.13 (i386-unknown-freebsd), 
Copyright 1994 Free Software Foundation, Inc...(no debugging symbols found)...
IdlePTD 202000
current pcb at 1edcbc
panic: FPU device not available      <<<<<=======!!!
#0  0xf01b3bf3 in boot ()
(kgdb) bt
#0  0xf01b3bf3 in boot ()
#1  0xf01183a6 in panic ()
#2  0xf01bbd66 in trap_fatal ()
#3  0xf01bb5ea in trap ()
#4  0xf01b1491 in calltrap ()
#5  0xf019b7e8 in ffs_write ()
#6  0xf0134c1f in vn_write ()
#7  0xf0119bc6 in write ()
#8  0xf01bc005 in syscall ()
#9  0xf01b14e5 in Xsyscall ()
#10 0x2289 in ?? ()
#11 0x1de7 in ?? ()
#12 0x1095 in ?? ()
===

This is the relevant code:

 * +	subl $108,%esp
 * +	movl %cr0,%edx
 * +	clts
 * +	fnsave (%esp)

 * +	frstor (%esp)
 * +	movl %edx,%cr0
 * +	addl $108,%esp

Hmm.

Satoshi