Re: CVS commit: src/external/gpl3/gcc

[Joerg Sonnenberger <joerg%bec.de@localhost>]

On Sat, Sep 12, 2020 at 10:24:16PM +0200, Kamil Rytarowski wrote:
> On 12.09.2020 22:06, Joerg Sonnenberger wrote:
> > On Fri, Sep 11, 2020 at 11:45:42PM +0200, Kamil Rytarowski wrote:
> >> On 11.09.2020 23:38, Joerg Sonnenberger wrote:
> >>> On Fri, Sep 11, 2020 at 04:07:24PM +0200, Kamil Rytarowski wrote:
> >>>> The current code is confusing, as it attempts to use unimplemented
> >>>> _PTHREAD_GETTCB_EXT() and in one place uses _lwp_getprivate_fast() in
> >>>> other _lwp_getprivate(). This caused my confusion... as I assumed that
> >>>> _lwp_getprivate_fast() is internal and _lwp_getprivate() for public
> >>>> consumption.
> >>>
> >>> _PTHREAD_GETTCB_EXT is a rump hack. There is no _lwp_getprivate_fast.
> >>> There is __lwp_getprivate_fast, which originally wasn't implemented on
> >>> architectures without a fast path (like VAX). Nowadays, all functional
> >>> ports provide either __lwp_getprivate_fast (potentially with a fall-back
> >>> to the system call) or __lwp_gettcb_fast. The difference is whether the
> >>> TLS register is biased or not.
> >>>
> >>
> >> Do you agree with this patch:
> >>
> >> http://netbsd.org/~kamil/patch-00278-_rtld_tls_self.txt
> > 
> > No, I don't see the point.
> > 
> 
> What's the alternative to use in 3rd party code?

Why do you need an alternative?

Joerg