linux-kernel - Re: btrfs zero divide

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Date:	Tue, 30 Jul 2013 15:40:01 +0000 (UTC)
From:	Thorsten Glaser <tg@...bsd.de>
To:	debian-68k@...ts.debian.org
cc:	linux-btrfs@...r.kernel.org,
	Linux Kernel Development <linux-kernel@...r.kernel.org>
Subject: Re: btrfs zero divide

Geert Uytterhoeven dixit:

>   0:	222e ff74      	movel %fp@(-140),%d1
>   4:	2a2e ff5c      	movel %fp@(-164),%d5
>   8:	2c2e ff60      	movel %fp@(-160),%d6
>   c:	4c45 1402     <	divul %d5,%d2,%d1 >
>  10:	2d40 ff64      	movel %d0,%fp@(-156)
>  14:	2d41 ff68      	movel %d1,%fp@(-152)
>  18:	2205           	movel %d5,%d1
>  1a:	4c2e 1800 ff68 	mulsl %fp@(-152),%d1
>  20:	4c04 0800      	mulsl %d4,%d0
>  24:	2041           	moveal %d1,%a0
>  26:	d1c0           	addal %d0,%a0
>  28:	2206           	movel %d6,%d1
>  2a:	4c2e 1400 ff68 	mulul %fp@(-152),%d0,%d1

This is gcc-4.8 compiled, btw… in case that’s a known issue.

bye,
//mirabilos
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