Use STB_SECONDARY on pthread functions in libchjl/pthread/2.22

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:
	(routines): Add libc-pthread-secondary.
	(CFLAGS-libc-pthread-secondary.c): New.
	* nptl/Versions [HAVE_ASM_SECONDARY_DIRECTIVE] (libc:GLIBC_2.0):
	Add pthread_once.
	[HAVE_ASM_SECONDARY_DIRECTIVE] (libc:GLIBC_PRIVATE): Add
	_pthread_cleanup_pop_restore, _pthread_cleanup_push_defer,
	__pthread_getspecific, __pthread_setspecific,
	__pthread_key_create, __pthread_mutex_lock,
	__pthread_mutex_unlock, __pthread_once,
	__pthread_rwlock_rdlock, __pthread_rwlock_wrlock,
	__pthread_rwlock_unlock and __pthread_unwind.
	[HAVE_ASM_SECONDARY_DIRECTIVE] (libpthread:GLIBC_PRIVATE):
	Likewise.
	* cleanup_defer_compat.c: Include <shlib-compat.h>.
	Add GLIBC_2_0 and GLIBC_PRIVATE versions for
	_pthread_cleanup_pop_restore and _pthread_cleanup_push_defer.
	* nptl/forward.c [HAVE_ASM_SECONDARY_DIRECTIVE] (FORWARD2): New.
	(FORWARD_NORETURN): Likewise.
	(pthread_setcancelstate): Renamed to ...
	(__pthread_setcancelstate): This.
	(pthread_setcancelstate): Add an alias.
	* nptl/libc-pthread-secondary.c: New file.
	* 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/pthread_getspecific.c: Include <shlib-compat.h>.
	Add GLIBC_2_0 and GLIBC_PRIVATE versions for
	__pthread_getspecific.
	* nptl/pthread_key_create.c: Include <shlib-compat.h>.
	Add GLIBC_2_0 and GLIBC_PRIVATE versions for
	__pthread_key_create.
	* nptl/pthread_mutex_lock.c: Include <shlib-compat.h>.
	Add GLIBC_2_0 and GLIBC_PRIVATE versions for
	__pthread_mutex_lock.
	* nptl/pthread_mutex_unlock.c: Include <shlib-compat.h>.
	Add GLIBC_2_0 and GLIBC_PRIVATE versions for
	__pthread_mutex_unlock.
	* nptl/pthread_once.c: Include <shlib-compat.h>.
	Add GLIBC_2_0 and GLIBC_PRIVATE versions for
	__pthread_once.
	* nptl/pthread_rwlock_rdlock.c: Include <shlib-compat.h>.
	Add GLIBC_2_0 and GLIBC_PRIVATE versions for
	__pthread_rwlock_rdlock.
	* nptl/pthread_rwlock_unlock.c: Include <shlib-compat.h>.
	Add GLIBC_2_0 and GLIBC_PRIVATE versions for
	__pthread_rwlock_unlock.
	* nptl/pthread_rwlock_wrlock.c: Include <shlib-compat.h>.
	Add GLIBC_2_0 and GLIBC_PRIVATE versions for
	__pthread_rwlock_wrlock.
	* nptl/pthread_setspecific.c: Include <shlib-compat.h>.
	Add GLIBC_2_0 and GLIBC_PRIVATE versions for
	__pthread_setspecific.
	* 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: Add __pthread_getspecific,
	__pthread_key_create, __pthread_once, __pthread_rwlock_rdlock,
	__pthread_rwlock_wrlock, __pthread_rwlock_unlock,
	__pthread_setcancelstate, __pthread_setspecific,
	__pthread_unwind.  _pthread_cleanup_pop_restore and
	_pthread_cleanup_push_defer.
	* sysdeps/unix/sysv/linux/i386/localplt.data: Likewise.
	* sysdeps/x86_64/localplt.data: 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/nptl/jmp-unwind.c: Include <bits/libc-lock.h>
	instead of <nptl/pthreadP.h>.
	(__pthread_cleanup_upto): Don't mark it weak if
	HAVE_ASM_SECONDARY_DIRECTIVE is defined.
	(_longjmp_unwind): Use __libc_ptf_call.
	* sysdeps/unix/sysv/linux/s390/jmp-unwind.c: 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/libc.abilist: Add pthread_once.
	* sysdeps/unix/sysv/linux/x86_64/64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist: Likewise.
	* 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.
	* sysdeps/unix/sysv/linux/x86_64/cancellation.S (__pthread_unwind):
	Don't mark it weak if HAVE_ASM_SECONDARY_DIRECTIVE is defined.

1 files changed, 30 insertions, 4 deletions

diff --git a/nptl/forward.c b/nptl/forward.c
index db74f8df92..2a358055e2 100644
--- a/nptl/forward.c
+++ b/nptl/forward.c
@@ -31,7 +31,26 @@ struct pthread_functions __libc_pthread_functions attribute_hidden;
 int __libc_pthread_functions_init attribute_hidden;
 
 
-#define FORWARD2(name, rettype, decl, params, defaction) \
+#ifdef HAVE_ASM_SECONDARY_DIRECTIVE
+/* Make sure that it is used only when libpthread is not used.  */
+# define FORWARD2(name, rettype, decl, params, defaction) \
+asm (".secondary "#name);						      \
+rettype									      \
+name decl								      \
+{									      \
+  defaction;								      \
+}
+
+/* Same as FORWARD2, only without return.  */
+# define FORWARD_NORETURN(name, rettype, decl, params, defaction) \
+asm (".secondary "#name);						      \
+rettype									      \
+name decl								      \
+{									      \
+  defaction;								      \
+}
+#else
+# define FORWARD2(name, rettype, decl, params, defaction) \
 rettype									      \
 name decl								      \
 {									      \
@@ -42,7 +61,7 @@ name decl								      \
 }
 
 /* Same as FORWARD2, only without return.  */
-#define FORWARD_NORETURN(name, rettype, decl, params, defaction) \
+# define FORWARD_NORETURN(name, rettype, decl, params, defaction) \
 rettype									      \
 name decl								      \
 {									      \
@@ -51,6 +70,7 @@ name decl								      \
 									      \
   PTHFCT_CALL (ptr_##name, params);					      \
 }
+#endif
 
 #define FORWARD(name, decl, params, defretval) \
   FORWARD2 (name, int, decl, params, return defretval)
@@ -197,13 +217,19 @@ FORWARD (pthread_mutex_unlock, (pthread_mutex_t *mutex), (mutex), 0)
 FORWARD2 (pthread_self, pthread_t, (void), (), return 0)
 
 
-FORWARD (pthread_setcancelstate, (int state, int *oldstate), (state, oldstate),
-	 0)
+FORWARD (__pthread_setcancelstate, (int state, int *oldstate),
+	 (state, oldstate), 0)
+strong_alias (__pthread_setcancelstate, pthread_setcancelstate)
+#ifdef HAVE_ASM_SECONDARY_DIRECTIVE
+asm (".secondary pthread_setcancelstate");
+#endif
 
 FORWARD (pthread_setcanceltype, (int type, int *oldtype), (type, oldtype), 0)
 
+#ifndef HAVE_ASM_SECONDARY_DIRECTIVE
 FORWARD_NORETURN (__pthread_unwind,
                   void attribute_hidden __attribute ((noreturn))
                   __cleanup_fct_attribute attribute_compat_text_section,
                   (__pthread_unwind_buf_t *buf), (buf),
                   __safe_fatal ())
+#endif