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SubjectEmulating i486 on i386 (was: TSCs are a no-no on i386)
On Thu, 2003-07-31 09:17:19 +0200, Willy Tarreau <>
wrote in message <20030731071719.GA26249@alpha.home.local>:
> On Thu, Jul 31, 2003 at 08:22:52AM +0200, Jan-Benedict Glaw wrote:
> > > The 486 emlation patch for 386 is the way to still allow 386's to run
> > > Debian.
> >
> > Okay, I'll have a look at it. Where's the 2.6.x version?
> It doesn't exist, but could certainly easily be ported from 2.4.

> So to resume, everything can be done through emulation, but that's probably
> not what we want as a standard for performance reasons. When I have time, I
> may port it to 2.6, but that's not no my priority list.

Thanks for that. In the meantime, I've started to give a try to the
userspace version (using a LD_PRELOAD lib). My current Problem:

amtus:~/sigill_catcher# LD_PRELOAD=./ ls
sigill.c:_init():69: sigill started, sigaction() = 0 intercept.h sigill.c sigill.o
amtus:~/sigill_catcher# LD_PRELOAD=./ apt-get update
Illegal instruction

See? It's loaded at the "ls" call, but it seems to be not loaded for

I've tried to put the lib's name into /etc/, but it seems
it's never loaded then (for apt-get, ls is doing fine...):

amtus:~/sigill_catcher# cat /etc/
sigill.c:_init():69: sigill started, sigaction() = 0
amtus:~/sigill_catcher# apt-get update
Illegal instruction

Where's the difference? Seems I don't know enough about
Any useful hints for me?


Jan-Benedict Glaw . +49-172-7608481
"Eine Freie Meinung in einem Freien Kopf | Gegen Zensur | Gegen Krieg
fuer einen Freien Staat voll Freier Bürger" | im Internet! | im Irak!
ret = do_actions((curr | FREE_SPEECH) & ~(IRAQ_WAR_2 | DRM | TCPA));
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