Use STB_SECONDARY on pthread functions in libchjl/pthread/2.21

Use STB_SECONDARY binding on pthread functions in libc so that they will
be preempted by definitions in libpthread at link-time as well as at
run-time.

	* csu/libc-tls.c (__pthread_initialize_minimal): Mark it
	secondary if HAVE_ASM_SECONDARY_DIRECTIVE is defined.
	* misc/error.c (error): Replace pthread_setcancelstate with
	__pthread_setcancelstate.
	(error_at_line): Likewise.
	* posix/wordexp.c (parse_comm): Likewise.
	* stdlib/fmtmsg.c (fmtmsg): Likewise.
	* nptl/Makefile: Include ../Makeconfig.
	(libc-libpthread-routines): New macro.
	(libc-libpthread-static-only-routines): Likewise.
	(static-only-routines): Add $(libc-libpthread-static-only-routines)
	if $(have-secondary) is yes.
	(routines): Add $(libc-libpthread-routines) if $(have-secondary)
	is yes.
	(CFLAGS-libc-pthread_unwind.c): New.
	* nptl/Versions [HAVE_ASM_SECONDARY_DIRECTIVE] (libc:GLIBC_2.0):
	Add _pthread_cleanup_pop_restore, _pthread_cleanup_push_defer,
	__pthread_getspecific, __pthread_setspecific,
	__pthread_key_create, pthread_once, __pthread_once,
	__pthread_mutex_lock and __pthread_mutex_unlock.
	[HAVE_ASM_SECONDARY_DIRECTIVE] (libc:GLIBC_2.2): Add
	__pthread_rwlock_init, __pthread_rwlock_destroy,
	__pthread_rwlock_rdlock, __pthread_rwlock_wrlock and
	__pthread_rwlock_unlock.
	[HAVE_ASM_SECONDARY_DIRECTIVE] (libc:GLIBC_PRIVATE): Add
	__pthread_unwind and __pthread_setcancelstate.
	[HAVE_ASM_SECONDARY_DIRECTIVE] (libpthread:GLIBC_PRIVATE): Add
	__pthread_setcancelstate.
	* nptl/forward.c [HAVE_ASM_SECONDARY_DIRECTIVE] (FORWARD2): New.
	(FORWARD_NORETURN): Likewise.
	(pthread_setcancelstate): Renamed to ...
	(__pthread_setcancelstate): This.  Don't define if
	(__pthread_unwind): Don't define if HAVE_ASM_SECONDARY_DIRECTIVE
	is defined.
	* nptl/libc-cleanup_defer_compat.c: New file.
	* nptl/libc-pthread_getspecific.c: Likewise.
	* nptl/libc-pthread_key_create.c: Likewise.
	* nptl/libc-pthread_mutex_lock.c: Likewise.
	* nptl/libc-pthread_mutex_unlock.c: Likewise.
	* nptl/libc-pthread_once.c: Likewise.
	* nptl/libc-pthread_rwlock_destroy.c: Likewise.
	* nptl/libc-pthread_rwlock_init.c: Likewise.
	* nptl/libc-pthread_rwlock_rdlock.c: Likewise.
	* nptl/libc-pthread_rwlock_unlock.c: Likewise.
	* nptl/libc-pthread_rwlock_wrlock.c: Likewise.
	* nptl/libc-pthread_setcancelstate.c: Likewise.
	* nptl/libc-pthread_setspecific.c: Likewise.
	* nptl/libc-pthread_unwind.c: Likewise.
	* nptl/nptl-init.c (pthread_functions): Don't include secondary
	pthread functions in libc if HAVE_ASM_SECONDARY_DIRECTIVE is
	defined.  Replace ptr_pthread_setcancelstate with
	ptr___pthread_setcancelstate.
	* sysdeps/nptl/pthread-functions.h (pthread_functions): Likewise.
	* nptl/pthreadP.h (__pthread_unwind): Don't mark it weak if
	HAVE_ASM_SECONDARY_DIRECTIVE is defined.
	(__pthread_cond_broadcast_2_0): Declare only if not in libc.
	(__pthread_cond_destroy_2_0): Likewise.
	(__pthread_cond_init_2_0): Likewise.
	(__pthread_cond_signal_2_0): Likewise.
	(__pthread_cond_timedwait_2_0): Likewise.
	(__pthread_cond_wait_2_0): Likewise.
	* scripts/abilist.awk: Support secondary symbols.
	* sysdeps/generic/localplt.data: Allow pthread functions.
	* sysdeps/unix/sysv/linux/i386/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/i386/localplt.data: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist: Likewise.
	* sysdeps/nptl/bits/libc-lockP.h (PTFAVAIL): Defined as 1 if
	HAVE_ASM_SECONDARY_DIRECTIVE is defined.
	(__libc_maybe_call): Always call FUNC if
	HAVE_ASM_SECONDARY_DIRECTIVE is defined.
	(__libc_ptf_call): Likewise.
	(__libc_ptf_call_always): Likewise.
	(__pthread_mutex_init): Don't mark it weak if
	HAVE_ASM_SECONDARY_DIRECTIVE is defined.
	(__pthread_mutex_destroy): Likewise.
	(__pthread_mutex_lock): Likewise.
	(__pthread_mutex_trylock): Likewise.
	(__pthread_mutex_unlock): Likewise.
	(__pthread_mutexattr_init): Likewise.
	(__pthread_mutexattr_destroy): Likewise.
	(__pthread_mutexattr_settype): Likewise.
	(__pthread_rwlock_destroy): Likewise.
	(__pthread_rwlock_rdlock): Likewise.
	(__pthread_rwlock_tryrdlock): Likewise.
	(__pthread_rwlock_wrlock): Likewise.
	(__pthread_rwlock_trywrlock): Likewise.
	(__pthread_rwlock_unlock): Likewise.
	(__pthread_key_create): Likewise.
	(__pthread_setspecific): Likewise.
	(__pthread_getspecific): Likewise.
	(__pthread_once): Likewise.
	(__pthread_initialize): Likewise.
	(__pthread_atfork): Likewise.
	(_pthread_cleanup_push_defer): Likewise.
	(_pthread_cleanup_pop_restore): Likewise.
	(__pthread_setcancelstate): New prototype.
	(pthread_setcancelstate): Renamed to ...
	(__pthread_setcancelstate): This.  Don't mark it weak if
	HAVE_ASM_SECONDARY_DIRECTIVE is defined.
	* sysdeps/unix/sysv/linux/x86_64/cancellation.S (__pthread_unwind):
	Likewise.
	* sysdeps/unix/sysv/linux/fatal-prepare.h (FATAL_PREPARE): Always
	call __pthread_setcancelstate if HAVE_ASM_SECONDARY_DIRECTIVE is
	defined.  Replace pthread_setcancelstate with
	__pthread_setcancelstate.
	* sysdeps/unix/sysv/linux/i386/i486/libc-lowlevellock.S: Make
	__lll_lock_wait_private and __lll_unlock_wake_private weak in
	libc.a.
	* sysdeps/unix/sysv/linux/x86_64/libc-lowlevellock.S: Likewise.

1 files changed, 34 insertions, 0 deletions

diff --git a/nptl/libc-pthread_unwind.c b/nptl/libc-pthread_unwind.c
new file mode 100644
index 0000000..9932ba7
--- /dev/null
+++ b/nptl/libc-pthread_unwind.c
@@ -0,0 +1,34 @@
+/* Copyright (C) 2015 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
+   <http://www.gnu.org/licenses/>.  */
+
+#ifdef HAVE_ASM_SECONDARY_DIRECTIVE
+# include <sysdep.h>
+# include <safe-fatal.h>
+
+/* Make sure that it is used only when libpthread is not used  */
+asm (".secondary __pthread_unwind");
+
+void
+__attribute ((noreturn))
+__cleanup_fct_attribute
+attribute_compat_text_section
+__pthread_unwind (__pthread_unwind_buf_t *buf)
+{
+  /* We cannot call abort() here.  */
+  __safe_fatal ();
+}
+#endif