Floating point exceptions with -pthread

David Schultz das at FreeBSD.ORG
Wed May 4 17:33:48 PDT 2005


On Thu, May 05, 2005, Marc Olzheim wrote:
> On Wed, May 04, 2005 at 06:18:25PM -0400, David Schultz wrote:
> > Yeah, that part is fine.  The one odd thing I notice as a glance
> > back at the code is that it uses -12(%ebp) and -16(%ebp) for
> > temporary storage, instead of using -4(%ebp) and -8(%ebp) like
> > the double versions.  That's probably a cut-and-pasto on my
> > part.
> 
> *doh*
> 
> NetBSD cvsweb /usr/src/lib/libm/arch/i387/s_floorf.S:
> 
> -----8<---------8<-----------8<-----
> Revision 1.3.16.1 / (download) - annotate - [select for diffs], Thu Mar 28 22:55:09 2002 UTC (3 years, 1 month ago) by he
> Branch: netbsd-1-5
> CVS Tags: netbsd-1-5-PATCH003
> Changes since 1.3: +6 -6 lines
> Diff to previous 1.3 (colored) next main 1.4 (colored)
> 
> Pull up revision 1.5 (requested by fvdl):
>   Fix stack usage so that a signal delivered in ceil() or floor()
>   no longer corrupts the stack.
> -----8<---------8<-----------8<-----
> 
> Versions before it looked an awful lot like the one we just fixed. :-/
> 
> It seems as though a look into the other NetBSD patches might be
> worthwile...

Heh, guess what version I imported?

	/* RCSID("$NetBSD: s_floorf.S,v 1.3 1995/05/09 00:04:32 jtc Exp $") */

Well, I'm glad that at least *I* didn't write it.  ;-)  I'm really
swamped right now due to the confluence of several deadlines, but
I'll import the fix as soon as I get a free moment.  (Anyone else
is welcome to preempt me...)


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