Pthread patches for TLS

[Doug Rabson]

On Thu, 2004-08-05 at 16:19, Daniel Eischen wrote:
> On Thu, 5 Aug 2004, Daniel Eischen wrote:
> 
> > On Thu, 5 Aug 2004, Doug Rabson wrote:
> > 
> > > I haven't tried to support static linked TLS at all. The plan is to get 
> > > the kernel to size the TLS segment and add extra AUXARGs to report its 
> > > size, initialiser location and alignment. The stubs in libc/gen/tls.c 
> > > would be extended to provide support for allocating the TLS blocks in 
> > > the static case.
> > > 
> > > I was under the impression that no-one particularly wanted to support 
> > > pthreads in statically linked binaries?
> > 
> > The thread guys don't want to support static thread libraries ;-)
> > But I proposed this a few months ago (year?) in -current and there
> > was some reluctance.  Imp was one that was against it (from what I
> > can remember).  The reason given was speed of static binaries is
> > faster than dynamic.  I didn't force the issue any more than that.
> > That's how I recall it anyways.  I'll have to search the list
> > archives to see if I can find the thread.
> 
> Found it.
> 
>   http://docs.freebsd.org/mail/archive/2003/freebsd-arch/20030330.freebsd-arch.html
> 
> Look for "Not providing static libraries", Mar 26, 2003, freebsd-arch
> 
> Note that Solaris doesn't have static thread libraries.  I'm not sure about
> Linux...

I thought I was in luck when I noticed the AT_PHDR entry but
unfortunately its NULL in static programs. I reckon I can fix that in
the kernel since the phdrs are definately inside the first load segment.