Re: i486 emu in mainline?

[P]

Willy Tarreau wrote:
> On Sun, May 23, 2004 at 06:51:30AM -0400, Joseph Fannin wrote:
>
> > On Sun, May 23, 2004 at 10:29:12AM +0200, Willy Tarreau wrote:
> >
> > > On Sun, May 23, 2004 at 01:40:59AM +0200, Christoph Hellwig wrote:
> > >
> > > > These days gcc uses i486+ only instruction by default in libstdc++ so
> > > > most modern distros wouldn't work on i386 cpus anymore.  To make it work
> > > > again Debian merged Willy Tarreau's patch to trap those and emulate them
> > > > on real i386 cpus.  The patch is extremely non-invasive and would
> > > > certainly be usefull for mainline.  Any reason not to include it?
> >
> > >  - I couldn't emulate locks, so this will break on SMP systems, and so
> > >    will it if you need to access some memory share with an external
> > >    microcontroller or something like that.
> >
> >    Does this mean that programs that use the NPTL will work on
> > non-SMP 386s?
>
> I have no idea. Why would NPTL not work on i386 ?

i386 doesn't have the necessary instructions.
It's my understanding that the following is not being maintained:
http://sources.redhat.com/ml/libc-hacker/2004-05/msg00019.html

Pádraig.
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