Date: Mon, 7 Jun 2004 10:14:21 +0100 From: Doug Rabson <dfr@nlsystems.com> To: freebsd-current@freebsd.org Subject: Re: HEADS UP! KSE needs more attention Message-ID: <200406071014.21707.dfr@nlsystems.com> In-Reply-To: <20040606204817.GB96607@dhcp50.pn.xcllnt.net> References: <Pine.GSO.4.10.10406061551210.16558-100000@pcnet5.pcnet.com> <40C37E1C.4000402@freebsd.org> <20040606204817.GB96607@dhcp50.pn.xcllnt.net>
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On Sunday 06 June 2004 21:48, Marcel Moolenaar wrote: > On Sun, Jun 06, 2004 at 02:27:08PM -0600, Scott Long wrote: > > >Doug Rabson also has basic TLS support working in perforce. > > > > What platforms? My understanding was that new binutils and gcc was > > needed for sparc64 at a minimum. > > Yes. It's i386 only and not even close to being complete. In fact, > there has been discussions that the thread pointer on i386 needs to > change. Whether that's the case or not, it's likely that TLS will > complicate matters way too much to for it to ever work in 5.3. Actually its a bit better than that. It works for most use cases right now on i386 but would get confused on dlclose. I'll fix that before I move it into current. As far as the thread pointer issue goes, it turns out that our current compiler will always evaluate %gs:0 first which is fine for libpthread. I looked at gcc-3.4 sources and it can also be configured to always evaluate %gs:0 (this is the default for non-linux platforms).
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