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Re: [hurd,commited] hurd: Avoid more libc.so local PLTs
H.J. Lu, on mar. 03 avril 2018 14:41:27 -0700, wrote:
> On Tue, Apr 3, 2018 at 2:24 PM, Samuel Thibault
> <samuel.thibault@ens-lyon.org> wrote:
> > H.J. Lu, on mar. 03 avril 2018 14:16:50 -0700, wrote:
> >> On Tue, Apr 3, 2018 at 2:07 PM, Samuel Thibault
> >> <samuel.thibault@ens-lyon.org> wrote:
> >> > Hello,
> >> >
> >> > H.J. Lu, on mar. 03 avril 2018 12:26:33 -0700, wrote:
> >> >> __libc_longjmp and __libc_siglongjmp are private external functions provided for
> >> >> libpthread. They should never be called inside libc.
> >> >
> >> > I'm sorry for asking, but are these conventions documented somewhere?
> >> > These look like magic to me otherwise:
> >>
> >> I don't believe they are well documented.
> >
> > Ok, then I need an answer to my question:
> >
> >> > why shouldn't they ever be called from libc?
> >
> > The existing hurd code does use them for catching signals, so I need to
> > know how to fix it.
>
> Use something similar to
>
> libc_hidden_proto (_setjmp)
> libc_hidden_proto (__sigsetjmp)
So I'd just add hidden protos & defs to longjmp and siglongjmp?
Samuel