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Re: [hurd,commited] hurd: Avoid more libc.so local PLTs
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)
--
H.J.