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nptl: Move __pthread_unwind_next into libc

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It's necessary to stub out __libc_disable_asynccancel and
__libc_enable_asynccancel via rtld-stubbed-symbols because the new
direct references to the unwinder result in symbol conflicts when the
rtld exception handling from libc is linked in during the construction
of librtld.map.

unwind-forcedunwind.c is merged into unwind-resume.c.  libc now needs
the functions that were previously only used in libpthread.

The GLIBC_PRIVATE exports of __libc_longjmp and __libc_siglongjmp are
no longer needed, so switch them to hidden symbols.

The symbol __pthread_unwind_next has been moved using
scripts/move-symbol-to-libc.py.

Reviewed-by: Adhemerva Zanella  <adhemerval.zanella@linaro.org>
This commit is contained in:
Florian Weimer
2021-04-21 19:49:50 +02:00
parent 3fec7f18bf
commit 1d95b035c7
82 changed files with 126 additions and 189 deletions
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14
sysdeps/generic/unwind-resume.c
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@ -44,3 +44,17 @@ __gcc_personality_v0 PERSONALITY_PROTO
{
return UNWIND_LINK_PTR (link (), personality) PERSONALITY_ARGS;
}
_Unwind_Reason_Code
_Unwind_ForcedUnwind (struct _Unwind_Exception *exc, _Unwind_Stop_Fn stop,
void *stop_argument)
{
return UNWIND_LINK_PTR (link (), _Unwind_ForcedUnwind)
(exc, stop, stop_argument);
}
_Unwind_Word
_Unwind_GetCFA (struct _Unwind_Context *context)
{
return UNWIND_LINK_PTR (link (), _Unwind_GetCFA) (context);
}