nptl: Remove longjmp, siglongjmp from libpthread

The definitions in libc are sufficient, the forwarders are no longer
needed.

The symbols have been moved using scripts/move-symbol-to-libc.py.
s390-linux-gnu and s390x-linux-gnu need a new version placeholder
to keep the GLIBC_2.19 symbol version in libpthread.

Tested on i386-linux-gnu, powerpc64le-linux-gnu, s390x-linux-gnu,
x86_64-linux-gnu.  Built with build-many-glibcs.py.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>

1 files changed, 0 insertions, 71 deletions

diff --git a/sysdeps/x86/nptl/pt-longjmp.c b/sysdeps/x86/nptl/pt-longjmp.c
deleted file mode 100644
index 77b3266..0000000
--- a/sysdeps/x86/nptl/pt-longjmp.c
+++ /dev/null
@@ -1,71 +0,0 @@
-/* ABI compatibility for 'longjmp' and 'siglongjmp' symbols in libpthread ABI.
-   X86 version.
-   Copyright (C) 1918-2021 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <https://www.gnu.org/licenses/>.  */
-
-#include <pthreadP.h>
-#include <jmp_buf-ssp.h>
-
-#ifdef __x86_64__
-# define SHADOW_STACK_POINTER_SIZE 8
-#else
-# define SHADOW_STACK_POINTER_SIZE 4
-#endif
-
-/* Assert that the priv field in struct pthread_unwind_buf has space
-   to store shadow stack pointer.  */
-_Static_assert ((offsetof (struct pthread_unwind_buf, priv)
-		 <= SHADOW_STACK_POINTER_OFFSET)
-		&& ((offsetof (struct pthread_unwind_buf, priv)
-		     + sizeof (((struct pthread_unwind_buf *) 0)->priv))
-		    >= (SHADOW_STACK_POINTER_OFFSET
-			+ SHADOW_STACK_POINTER_SIZE)),
-		"Shadow stack pointer is not within private storage "
-		"of pthread_unwind_buf.");
-
-#include <shlib-compat.h>
-
-/* libpthread once had its own longjmp (and siglongjmp alias), though there
-   was no apparent reason for it.  There is no use in having a separate
-   symbol in libpthread, but the historical ABI requires it.  For static
-   linking, there is no need to provide anything here--the libc version
-   will be linked in.  For shared library ABI compatibility, there must be
-   longjmp and siglongjmp symbols in libpthread.so.
-
-   With an IFUNC resolver, it would be possible to avoid the indirection,
-   but the IFUNC resolver might run before the __libc_longjmp symbol has
-   been relocated, in which case the IFUNC resolver would not be able to
-   provide the correct address.  */
-
-#if SHLIB_COMPAT (libpthread, GLIBC_2_0, GLIBC_2_22)
-
-static void __attribute__ ((noreturn, used))
-longjmp_compat (jmp_buf env, int val)
-{
-  /* NB: We call __libc_siglongjmp,  instead of __libc_longjmp, since
-     __libc_longjmp is a private interface for cancellation which
-     doesn't restore shadow stack register.  */
-  __libc_siglongjmp (env, val);
-}
-
-strong_alias (longjmp_compat, longjmp_alias)
-compat_symbol (libpthread, longjmp_alias, longjmp, GLIBC_2_0);
-
-strong_alias (longjmp_alias, siglongjmp_alias)
-compat_symbol (libpthread, siglongjmp_alias, siglongjmp, GLIBC_2_0);
-
-#endif