nptl: Move __pthread_unwind_next into libc

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>

2 files changed, 5 insertions, 13 deletions

diff --git a/sysdeps/powerpc/Versions b/sysdeps/powerpc/Versions
index 9584966..cca8fd2 100644
--- a/sysdeps/powerpc/Versions
+++ b/sysdeps/powerpc/Versions
@@ -13,10 +13,6 @@ libc {
     _longjmp; __sigsetjmp; _setjmp;
     longjmp; setjmp;
   }
-  GLIBC_PRIVATE {
-    __novmx__libc_longjmp; __novmx__libc_siglongjmp;
-    __vmx__libc_longjmp; __vmx__libc_siglongjmp;
-  }
 }
 
 ld {
diff --git a/sysdeps/powerpc/longjmp.c b/sysdeps/powerpc/longjmp.c
index 7332433..57ee561 100644
--- a/sysdeps/powerpc/longjmp.c
+++ b/sysdeps/powerpc/longjmp.c
@@ -48,13 +48,9 @@ __vmx__libc_siglongjmp (sigjmp_buf env, int val)
 
 strong_alias (__vmx__libc_siglongjmp, __vmx__libc_longjmp)
 libc_hidden_def (__vmx__libc_longjmp)
-weak_alias (__vmx__libc_siglongjmp, __vmx_longjmp)
-weak_alias (__vmx__libc_siglongjmp, __vmxlongjmp)
-weak_alias (__vmx__libc_siglongjmp, __vmxsiglongjmp)
 
-
-default_symbol_version (__vmx__libc_longjmp, __libc_longjmp, GLIBC_PRIVATE);
-default_symbol_version (__vmx__libc_siglongjmp, __libc_siglongjmp, GLIBC_PRIVATE);
-versioned_symbol (libc, __vmx_longjmp, _longjmp, GLIBC_2_3_4);
-versioned_symbol (libc, __vmxlongjmp, longjmp, GLIBC_2_3_4);
-versioned_symbol (libc, __vmxsiglongjmp, siglongjmp, GLIBC_2_3_4);
+strong_alias (__vmx__libc_longjmp, __libc_longjmp)
+strong_alias (__vmx__libc_siglongjmp, __libc_siglongjmp)
+versioned_symbol (libc, __vmx__libc_siglongjmp, _longjmp, GLIBC_2_3_4);
+versioned_symbol (libc, __vmx__libc_siglongjmp, longjmp, GLIBC_2_3_4);
+versioned_symbol (libc, __vmx__libc_siglongjmp, siglongjmp, GLIBC_2_3_4);