Get rid of nptl/sysdeps/pthread/ subdirectory

35 files changed, 4381 insertions, 0 deletions

diff --git a/sysdeps/nptl/Implies b/sysdeps/nptl/Implies
new file mode 100644
index 0000000..f1b3e89
--- /dev/null
+++ b/sysdeps/nptl/Implies
@@ -0,0 +1 @@
+pthread
diff --git a/sysdeps/nptl/Makefile b/sysdeps/nptl/Makefile
new file mode 100644
index 0000000..bedf39b
--- /dev/null
+++ b/sysdeps/nptl/Makefile
@@ -0,0 +1,35 @@
+# Copyright (C) 2002-2014 Free Software Foundation, Inc.
+# This file is part of the GNU C Library.
+# Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
+
+# 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/>.
+
+ifeq ($(subdir),nptl)
+libpthread-sysdep_routines += errno-loc
+endif
+
+ifeq ($(subdir),rt)
+librt-sysdep_routines += timer_routines librt-cancellation
+CFLAGS-librt-cancellation.c += -fexceptions -fasynchronous-unwind-tables
+
+ifeq ($(have-forced-unwind),yes)
+tests += tst-mqueue8x
+CFLAGS-tst-mqueue8x.c += -fexceptions
+endif
+endif
+
+ifeq ($(subdir),posix)
+CFLAGS-confstr.c += -DLIBPTHREAD_VERSION='"NPTL $(version)"'
+endif
diff --git a/sysdeps/nptl/Subdirs b/sysdeps/nptl/Subdirs
new file mode 100644
index 0000000..36266c1
--- /dev/null
+++ b/sysdeps/nptl/Subdirs
@@ -0,0 +1,2 @@
+nptl
+nptl_db
diff --git a/sysdeps/nptl/aio_misc.h b/sysdeps/nptl/aio_misc.h
new file mode 100644
index 0000000..ac3488c
--- /dev/null
+++ b/sysdeps/nptl/aio_misc.h
@@ -0,0 +1,74 @@
+/* Copyright (C) 2006-2014 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/>.  */
+
+/* We define a special synchronization primitive for AIO.  POSIX
+   conditional variables would be ideal but the pthread_cond_*wait
+   operations do not return on EINTR.  This is a requirement for
+   correct aio_suspend and lio_listio implementations.  */
+
+#include <assert.h>
+#include <pthreadP.h>
+#include <lowlevellock.h>
+
+#define DONT_NEED_AIO_MISC_COND	1
+
+#define AIO_MISC_NOTIFY(waitlist) \
+  do {									      \
+    if (*waitlist->counterp > 0 && --*waitlist->counterp == 0)		      \
+      lll_futex_wake (waitlist->counterp, 1, LLL_PRIVATE);		      \
+  } while (0)
+
+#define AIO_MISC_WAIT(result, futex, timeout, cancel)			      \
+  do {									      \
+    volatile int *futexaddr = &futex;					      \
+    int oldval = futex;							      \
+									      \
+    if (oldval != 0)							      \
+      {									      \
+	pthread_mutex_unlock (&__aio_requests_mutex);			      \
+									      \
+	int oldtype;							      \
+	if (cancel)							      \
+	  oldtype = LIBC_CANCEL_ASYNC ();				      \
+									      \
+	int status;							      \
+	do								      \
+	  {								      \
+	    status = lll_futex_timed_wait (futexaddr, oldval, timeout,	      \
+					   LLL_PRIVATE);		      \
+	    if (status != -EWOULDBLOCK)					      \
+	      break;							      \
+									      \
+	    oldval = *futexaddr;					      \
+	  }								      \
+	while (oldval != 0);						      \
+									      \
+	if (cancel)							      \
+	  LIBC_CANCEL_RESET (oldtype);					      \
+									      \
+	if (status == -EINTR)						      \
+	  result = EINTR;						      \
+	else if (status == -ETIMEDOUT)					      \
+	  result = EAGAIN;						      \
+	else								      \
+	  assert (status == 0 || status == -EWOULDBLOCK);		      \
+									      \
+	pthread_mutex_lock (&__aio_requests_mutex);			      \
+      }									      \
+  } while (0)
+
+#include_next <aio_misc.h>
diff --git a/sysdeps/nptl/bits/libc-lock.h b/sysdeps/nptl/bits/libc-lock.h
new file mode 100644
index 0000000..532cf2c
--- /dev/null
+++ b/sysdeps/nptl/bits/libc-lock.h
@@ -0,0 +1,187 @@
+/* libc-internal interface for mutex locks.  NPTL version.
+   Copyright (C) 1996-2014 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; see the file COPYING.LIB.  If
+   not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef _BITS_LIBC_LOCK_H
+#define _BITS_LIBC_LOCK_H 1
+
+#include <pthread.h>
+#define __need_NULL
+#include <stddef.h>
+
+
+/* Mutex type.  */
+#if defined _LIBC || defined _IO_MTSAFE_IO
+# if (defined NOT_IN_libc && !defined IS_IN_libpthread) || !defined _LIBC
+typedef struct { pthread_mutex_t mutex; } __libc_lock_recursive_t;
+# else
+typedef struct { int lock; int cnt; void *owner; } __libc_lock_recursive_t;
+# endif
+#else
+typedef struct __libc_lock_recursive_opaque__ __libc_lock_recursive_t;
+#endif
+
+/* Define a lock variable NAME with storage class CLASS.  The lock must be
+   initialized with __libc_lock_init before it can be used (or define it
+   with __libc_lock_define_initialized, below).  Use `extern' for CLASS to
+   declare a lock defined in another module.  In public structure
+   definitions you must use a pointer to the lock structure (i.e., NAME
+   begins with a `*'), because its storage size will not be known outside
+   of libc.  */
+#define __libc_lock_define_recursive(CLASS,NAME) \
+  CLASS __libc_lock_recursive_t NAME;
+
+/* Define an initialized recursive lock variable NAME with storage
+   class CLASS.  */
+#if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread)
+# define __libc_lock_define_initialized_recursive(CLASS, NAME) \
+  CLASS __libc_lock_recursive_t NAME = _LIBC_LOCK_RECURSIVE_INITIALIZER;
+# define _LIBC_LOCK_RECURSIVE_INITIALIZER \
+  { LLL_LOCK_INITIALIZER, 0, NULL }
+#else
+# define __libc_lock_define_initialized_recursive(CLASS,NAME) \
+  CLASS __libc_lock_recursive_t NAME = _LIBC_LOCK_RECURSIVE_INITIALIZER;
+# define _LIBC_LOCK_RECURSIVE_INITIALIZER \
+  {PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP}
+#endif
+
+/* Initialize a recursive mutex.  */
+#if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread)
+# define __libc_lock_init_recursive(NAME) \
+  ((NAME) = (__libc_lock_recursive_t) _LIBC_LOCK_RECURSIVE_INITIALIZER, 0)
+#else
+# define __libc_lock_init_recursive(NAME) \
+  do {									      \
+    if (__pthread_mutex_init != NULL)					      \
+      {									      \
+	pthread_mutexattr_t __attr;					      \
+	__pthread_mutexattr_init (&__attr);				      \
+	__pthread_mutexattr_settype (&__attr, PTHREAD_MUTEX_RECURSIVE_NP);    \
+	__pthread_mutex_init (&(NAME).mutex, &__attr);			      \
+	__pthread_mutexattr_destroy (&__attr);				      \
+      }									      \
+  } while (0)
+#endif
+
+/* Finalize recursive named lock.  */
+#if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread)
+# define __libc_lock_fini_recursive(NAME) ((void) 0)
+#else
+# define __libc_lock_fini_recursive(NAME) \
+  __libc_maybe_call (__pthread_mutex_destroy, (&(NAME).mutex), 0)
+#endif
+
+/* Lock the recursive named lock variable.  */
+#if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread)
+# define __libc_lock_lock_recursive(NAME) \
+  do {									      \
+    void *self = THREAD_SELF;						      \
+    if ((NAME).owner != self)						      \
+      {									      \
+	lll_lock ((NAME).lock, LLL_PRIVATE);				      \
+	(NAME).owner = self;						      \
+      }									      \
+    ++(NAME).cnt;							      \
+  } while (0)
+#else
+# define __libc_lock_lock_recursive(NAME) \
+  __libc_maybe_call (__pthread_mutex_lock, (&(NAME).mutex), 0)
+#endif
+
+/* Try to lock the recursive named lock variable.  */
+#if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread)
+# define __libc_lock_trylock_recursive(NAME) \
+  ({									      \
+    int result = 0;							      \
+    void *self = THREAD_SELF;						      \
+    if ((NAME).owner != self)						      \
+      {									      \
+	if (lll_trylock ((NAME).lock) == 0)				      \
+	  {								      \
+	    (NAME).owner = self;					      \
+	    (NAME).cnt = 1;						      \
+	  }								      \
+	else								      \
+	  result = EBUSY;						      \
+      }									      \
+    else								      \
+      ++(NAME).cnt;							      \
+    result;								      \
+  })
+#else
+# define __libc_lock_trylock_recursive(NAME) \
+  __libc_maybe_call (__pthread_mutex_trylock, (&(NAME).mutex), 0)
+#endif
+
+/* Unlock the recursive named lock variable.  */
+#if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread)
+/* We do no error checking here.  */
+# define __libc_lock_unlock_recursive(NAME) \
+  do {									      \
+    if (--(NAME).cnt == 0)						      \
+      {									      \
+	(NAME).owner = NULL;						      \
+	lll_unlock ((NAME).lock, LLL_PRIVATE);				      \
+      }									      \
+  } while (0)
+#else
+# define __libc_lock_unlock_recursive(NAME) \
+  __libc_maybe_call (__pthread_mutex_unlock, (&(NAME).mutex), 0)
+#endif
+
+/* Note that for I/O cleanup handling we are using the old-style
+   cancel handling.  It does not have to be integrated with C++ since
+   no C++ code is called in the middle.  The old-style handling is
+   faster and the support is not going away.  */
+extern void _pthread_cleanup_push_defer (struct _pthread_cleanup_buffer *buffer,
+					 void (*routine) (void *), void *arg);
+extern void _pthread_cleanup_pop_restore (struct _pthread_cleanup_buffer *buffer,
+					  int execute);
+
+/* Start critical region with cleanup.  */
+#define __libc_cleanup_region_start(DOIT, FCT, ARG) \
+  { struct _pthread_cleanup_buffer _buffer;				      \
+    int _avail;								      \
+    if (DOIT) {								      \
+      _avail = PTFAVAIL (_pthread_cleanup_push_defer);			      \
+      if (_avail) {							      \
+	__libc_ptf_call_always (_pthread_cleanup_push_defer, (&_buffer, FCT,  \
+							      ARG));	      \
+      } else {								      \
+	_buffer.__routine = (FCT);					      \
+	_buffer.__arg = (ARG);						      \
+      }									      \
+    } else {								      \
+      _avail = 0;							      \
+    }
+
+/* End critical region with cleanup.  */
+#define __libc_cleanup_region_end(DOIT) \
+    if (_avail) {							      \
+      __libc_ptf_call_always (_pthread_cleanup_pop_restore, (&_buffer, DOIT));\
+    } else if (DOIT)							      \
+      _buffer.__routine (_buffer.__arg);				      \
+  }
+
+
+/* Hide the definitions which are only supposed to be used inside libc in
+   a separate file.  This file is not present in the installation!  */
+#ifdef _LIBC
+# include "libc-lockP.h"
+#endif
+
+#endif	/* bits/libc-lock.h */
diff --git a/sysdeps/nptl/bits/libc-lockP.h b/sysdeps/nptl/bits/libc-lockP.h
new file mode 100644
index 0000000..ec20271
--- /dev/null
+++ b/sysdeps/nptl/bits/libc-lockP.h
@@ -0,0 +1,424 @@
+/* Private libc-internal interface for mutex locks.  NPTL version.
+   Copyright (C) 1996-2014 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; see the file COPYING.LIB.  If
+   not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef _BITS_LIBC_LOCKP_H
+#define _BITS_LIBC_LOCKP_H 1
+
+#include <pthread.h>
+#define __need_NULL
+#include <stddef.h>
+
+
+/* Fortunately Linux now has a mean to do locking which is realtime
+   safe without the aid of the thread library.  We also need no fancy
+   options like error checking mutexes etc.  We only need simple
+   locks, maybe recursive.  This can be easily and cheaply implemented
+   using futexes.  We will use them everywhere except in ld.so since
+   ld.so might be used on old kernels with a different libc.so.  */
+#include <lowlevellock.h>
+#include <tls.h>
+#include <pthread-functions.h>
+
+/* Mutex type.  */
+#if defined NOT_IN_libc && !defined IS_IN_libpthread
+typedef pthread_mutex_t __libc_lock_t;
+#else
+typedef int __libc_lock_t;
+#endif
+typedef struct { pthread_mutex_t mutex; } __rtld_lock_recursive_t;
+typedef pthread_rwlock_t __libc_rwlock_t;
+
+/* Type for key to thread-specific data.  */
+typedef pthread_key_t __libc_key_t;
+
+/* Define a lock variable NAME with storage class CLASS.  The lock must be
+   initialized with __libc_lock_init before it can be used (or define it
+   with __libc_lock_define_initialized, below).  Use `extern' for CLASS to
+   declare a lock defined in another module.  In public structure
+   definitions you must use a pointer to the lock structure (i.e., NAME
+   begins with a `*'), because its storage size will not be known outside
+   of libc.  */
+#define __libc_lock_define(CLASS,NAME) \
+  CLASS __libc_lock_t NAME;
+#define __libc_rwlock_define(CLASS,NAME) \
+  CLASS __libc_rwlock_t NAME;
+#define __rtld_lock_define_recursive(CLASS,NAME) \
+  CLASS __rtld_lock_recursive_t NAME;
+
+/* Define an initialized lock variable NAME with storage class CLASS.
+
+   For the C library we take a deeper look at the initializer.  For
+   this implementation all fields are initialized to zero.  Therefore
+   we don't initialize the variable which allows putting it into the
+   BSS section.  (Except on PA-RISC and other odd architectures, where
+   initialized locks must be set to one due to the lack of normal
+   atomic operations.) */
+
+#if !defined NOT_IN_libc || defined IS_IN_libpthread
+# if LLL_LOCK_INITIALIZER == 0
+#  define __libc_lock_define_initialized(CLASS,NAME) \
+  CLASS __libc_lock_t NAME;
+# else
+#  define __libc_lock_define_initialized(CLASS,NAME) \
+  CLASS __libc_lock_t NAME = LLL_LOCK_INITIALIZER;
+# endif
+#else
+# define __libc_lock_define_initialized(CLASS,NAME) \
+  CLASS __libc_lock_t NAME;
+#endif
+
+#define __libc_rwlock_define_initialized(CLASS,NAME) \
+  CLASS __libc_rwlock_t NAME = PTHREAD_RWLOCK_INITIALIZER;
+
+#define __rtld_lock_define_initialized_recursive(CLASS,NAME) \
+  CLASS __rtld_lock_recursive_t NAME = _RTLD_LOCK_RECURSIVE_INITIALIZER;
+#define _RTLD_LOCK_RECURSIVE_INITIALIZER \
+  {PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP}
+
+#define __rtld_lock_initialize(NAME) \
+  (void) ((NAME) = (__rtld_lock_recursive_t) _RTLD_LOCK_RECURSIVE_INITIALIZER)
+
+/* If we check for a weakly referenced symbol and then perform a
+   normal jump to it te code generated for some platforms in case of
+   PIC is unnecessarily slow.  What would happen is that the function
+   is first referenced as data and then it is called indirectly
+   through the PLT.  We can make this a direct jump.  */
+#ifdef __PIC__
+# define __libc_maybe_call(FUNC, ARGS, ELSE) \
+  (__extension__ ({ __typeof (FUNC) *_fn = (FUNC); \
+		    _fn != NULL ? (*_fn) ARGS : ELSE; }))
+#else
+# define __libc_maybe_call(FUNC, ARGS, ELSE) \
+  (FUNC != NULL ? FUNC ARGS : ELSE)
+#endif
+
+/* Call thread functions through the function pointer table.  */
+#if defined SHARED && !defined NOT_IN_libc
+# define PTFAVAIL(NAME) __libc_pthread_functions_init
+# define __libc_ptf_call(FUNC, ARGS, ELSE) \
+  (__libc_pthread_functions_init ? PTHFCT_CALL (ptr_##FUNC, ARGS) : ELSE)
+# define __libc_ptf_call_always(FUNC, ARGS) \
+  PTHFCT_CALL (ptr_##FUNC, ARGS)
+#else
+# define PTFAVAIL(NAME) (NAME != NULL)
+# define __libc_ptf_call(FUNC, ARGS, ELSE) \
+  __libc_maybe_call (FUNC, ARGS, ELSE)
+# define __libc_ptf_call_always(FUNC, ARGS) \
+  FUNC ARGS
+#endif
+
+
+/* Initialize the named lock variable, leaving it in a consistent, unlocked
+   state.  */
+#if !defined NOT_IN_libc || defined IS_IN_libpthread
+# define __libc_lock_init(NAME) ((NAME) = LLL_LOCK_INITIALIZER, 0)
+#else
+# define __libc_lock_init(NAME) \
+  __libc_maybe_call (__pthread_mutex_init, (&(NAME), NULL), 0)
+#endif
+#if defined SHARED && !defined NOT_IN_libc
+/* ((NAME) = (__libc_rwlock_t) PTHREAD_RWLOCK_INITIALIZER, 0) is
+   inefficient.  */
+# define __libc_rwlock_init(NAME) \
+  (__builtin_memset (&(NAME), '\0', sizeof (NAME)), 0)
+#else
+# define __libc_rwlock_init(NAME) \
+  __libc_maybe_call (__pthread_rwlock_init, (&(NAME), NULL), 0)
+#endif
+
+/* Finalize the named lock variable, which must be locked.  It cannot be
+   used again until __libc_lock_init is called again on it.  This must be
+   called on a lock variable before the containing storage is reused.  */
+#if !defined NOT_IN_libc || defined IS_IN_libpthread
+# define __libc_lock_fini(NAME) ((void) 0)
+#else
+# define __libc_lock_fini(NAME) \
+  __libc_maybe_call (__pthread_mutex_destroy, (&(NAME)), 0)
+#endif
+#if defined SHARED && !defined NOT_IN_libc
+# define __libc_rwlock_fini(NAME) ((void) 0)
+#else
+# define __libc_rwlock_fini(NAME) \
+  __libc_maybe_call (__pthread_rwlock_destroy, (&(NAME)), 0)
+#endif
+
+/* Lock the named lock variable.  */
+#if !defined NOT_IN_libc || defined IS_IN_libpthread
+# ifndef __libc_lock_lock
+#  define __libc_lock_lock(NAME) \
+  ({ lll_lock (NAME, LLL_PRIVATE); 0; })
+# endif
+#else
+# undef __libc_lock_lock
+# define __libc_lock_lock(NAME) \
+  __libc_maybe_call (__pthread_mutex_lock, (&(NAME)), 0)
+#endif
+#define __libc_rwlock_rdlock(NAME) \
+  __libc_ptf_call (__pthread_rwlock_rdlock, (&(NAME)), 0)
+#define __libc_rwlock_wrlock(NAME) \
+  __libc_ptf_call (__pthread_rwlock_wrlock, (&(NAME)), 0)
+
+/* Try to lock the named lock variable.  */
+#if !defined NOT_IN_libc || defined IS_IN_libpthread
+# ifndef __libc_lock_trylock
+#  define __libc_lock_trylock(NAME) \
+  lll_trylock (NAME)
+# endif
+#else
+# undef __libc_lock_trylock
+# define __libc_lock_trylock(NAME) \
+  __libc_maybe_call (__pthread_mutex_trylock, (&(NAME)), 0)
+#endif
+#define __libc_rwlock_tryrdlock(NAME) \
+  __libc_maybe_call (__pthread_rwlock_tryrdlock, (&(NAME)), 0)
+#define __libc_rwlock_trywrlock(NAME) \
+  __libc_maybe_call (__pthread_rwlock_trywrlock, (&(NAME)), 0)
+
+#define __rtld_lock_trylock_recursive(NAME) \
+  __libc_maybe_call (__pthread_mutex_trylock, (&(NAME).mutex), 0)
+
+/* Unlock the named lock variable.  */
+#if !defined NOT_IN_libc || defined IS_IN_libpthread
+# define __libc_lock_unlock(NAME) \
+  lll_unlock (NAME, LLL_PRIVATE)
+#else
+# define __libc_lock_unlock(NAME) \
+  __libc_maybe_call (__pthread_mutex_unlock, (&(NAME)), 0)
+#endif
+#define __libc_rwlock_unlock(NAME) \
+  __libc_ptf_call (__pthread_rwlock_unlock, (&(NAME)), 0)
+
+#ifdef SHARED
+# define __rtld_lock_default_lock_recursive(lock) \
+  ++((pthread_mutex_t *)(lock))->__data.__count;
+
+# define __rtld_lock_default_unlock_recursive(lock) \
+  --((pthread_mutex_t *)(lock))->__data.__count;
+
+# define __rtld_lock_lock_recursive(NAME) \
+  GL(dl_rtld_lock_recursive) (&(NAME).mutex)
+
+# define __rtld_lock_unlock_recursive(NAME) \
+  GL(dl_rtld_unlock_recursive) (&(NAME).mutex)
+#else
+# define __rtld_lock_lock_recursive(NAME) \
+  __libc_maybe_call (__pthread_mutex_lock, (&(NAME).mutex), 0)
+
+# define __rtld_lock_unlock_recursive(NAME) \
+  __libc_maybe_call (__pthread_mutex_unlock, (&(NAME).mutex), 0)
+#endif
+
+/* Define once control variable.  */
+#if PTHREAD_ONCE_INIT == 0
+/* Special case for static variables where we can avoid the initialization
+   if it is zero.  */
+# define __libc_once_define(CLASS, NAME) \
+  CLASS pthread_once_t NAME
+#else
+# define __libc_once_define(CLASS, NAME) \
+  CLASS pthread_once_t NAME = PTHREAD_ONCE_INIT
+#endif
+
+/* Call handler iff the first call.  */
+#define __libc_once(ONCE_CONTROL, INIT_FUNCTION) \
+  do {									      \
+    if (PTFAVAIL (__pthread_once))					      \
+      __libc_ptf_call_always (__pthread_once, (&(ONCE_CONTROL),		      \
+					       INIT_FUNCTION));		      \
+    else if ((ONCE_CONTROL) == PTHREAD_ONCE_INIT) {			      \
+      INIT_FUNCTION ();							      \
+      (ONCE_CONTROL) |= 2;						      \
+    }									      \
+  } while (0)
+
+/* Get once control variable.  */
+#define __libc_once_get(ONCE_CONTROL)	((ONCE_CONTROL) != PTHREAD_ONCE_INIT)
+
+/* Note that for I/O cleanup handling we are using the old-style
+   cancel handling.  It does not have to be integrated with C++ snce
+   no C++ code is called in the middle.  The old-style handling is
+   faster and the support is not going away.  */
+extern void _pthread_cleanup_push (struct _pthread_cleanup_buffer *buffer,
+				   void (*routine) (void *), void *arg);
+extern void _pthread_cleanup_pop (struct _pthread_cleanup_buffer *buffer,
+				  int execute);
+extern void _pthread_cleanup_push_defer (struct _pthread_cleanup_buffer *buffer,
+					 void (*routine) (void *), void *arg);
+extern void _pthread_cleanup_pop_restore (struct _pthread_cleanup_buffer *buffer,
+					  int execute);
+
+/* Sometimes we have to exit the block in the middle.  */
+#define __libc_cleanup_end(DOIT) \
+    if (_avail) {							      \
+      __libc_ptf_call_always (_pthread_cleanup_pop_restore, (&_buffer, DOIT));\
+    } else if (DOIT)							      \
+      _buffer.__routine (_buffer.__arg)
+
+
+/* Normal cleanup handling, based on C cleanup attribute.  */
+__extern_inline void
+__libc_cleanup_routine (struct __pthread_cleanup_frame *f)
+{
+  if (f->__do_it)
+    f->__cancel_routine (f->__cancel_arg);
+}
+
+#define __libc_cleanup_push(fct, arg) \
+  do {									      \
+    struct __pthread_cleanup_frame __clframe				      \
+      __attribute__ ((__cleanup__ (__libc_cleanup_routine)))		      \
+      = { .__cancel_routine = (fct), .__cancel_arg = (arg),		      \
+	  .__do_it = 1 };
+
+#define __libc_cleanup_pop(execute) \
+    __clframe.__do_it = (execute);					      \
+  } while (0)
+
+
+/* Create thread-specific key.  */
+#define __libc_key_create(KEY, DESTRUCTOR) \
+  __libc_ptf_call (__pthread_key_create, (KEY, DESTRUCTOR), 1)
+
+/* Get thread-specific data.  */
+#define __libc_getspecific(KEY) \
+  __libc_ptf_call (__pthread_getspecific, (KEY), NULL)
+
+/* Set thread-specific data.  */
+#define __libc_setspecific(KEY, VALUE) \
+  __libc_ptf_call (__pthread_setspecific, (KEY, VALUE), 0)
+
+
+/* Register handlers to execute before and after `fork'.  Note that the
+   last parameter is NULL.  The handlers registered by the libc are
+   never removed so this is OK.  */
+#define __libc_atfork(PREPARE, PARENT, CHILD) \
+  __register_atfork (PREPARE, PARENT, CHILD, NULL)
+extern int __register_atfork (void (*__prepare) (void),
+			      void (*__parent) (void),
+			      void (*__child) (void),
+			      void *__dso_handle);
+
+/* Functions that are used by this file and are internal to the GNU C
+   library.  */
+
+extern int __pthread_mutex_init (pthread_mutex_t *__mutex,
+				 const pthread_mutexattr_t *__mutex_attr);
+
+extern int __pthread_mutex_destroy (pthread_mutex_t *__mutex);
+
+extern int __pthread_mutex_trylock (pthread_mutex_t *__mutex);
+
+extern int __pthread_mutex_lock (pthread_mutex_t *__mutex);
+
+extern int __pthread_mutex_unlock (pthread_mutex_t *__mutex);
+
+extern int __pthread_mutexattr_init (pthread_mutexattr_t *__attr);
+
+extern int __pthread_mutexattr_destroy (pthread_mutexattr_t *__attr);
+
+extern int __pthread_mutexattr_settype (pthread_mutexattr_t *__attr,
+					int __kind);
+
+extern int __pthread_rwlock_init (pthread_rwlock_t *__rwlock,
+				  const pthread_rwlockattr_t *__attr);
+
+extern int __pthread_rwlock_destroy (pthread_rwlock_t *__rwlock);
+
+extern int __pthread_rwlock_rdlock (pthread_rwlock_t *__rwlock);
+
+extern int __pthread_rwlock_tryrdlock (pthread_rwlock_t *__rwlock);
+
+extern int __pthread_rwlock_wrlock (pthread_rwlock_t *__rwlock);
+
+extern int __pthread_rwlock_trywrlock (pthread_rwlock_t *__rwlock);
+
+extern int __pthread_rwlock_unlock (pthread_rwlock_t *__rwlock);
+
+extern int __pthread_key_create (pthread_key_t *__key,
+				 void (*__destr_function) (void *));
+
+extern int __pthread_setspecific (pthread_key_t __key,
+				  const void *__pointer);
+
+extern void *__pthread_getspecific (pthread_key_t __key);
+
+extern int __pthread_once (pthread_once_t *__once_control,
+			   void (*__init_routine) (void));
+
+extern int __pthread_atfork (void (*__prepare) (void),
+			     void (*__parent) (void),
+			     void (*__child) (void));
+
+
+
+/* Make the pthread functions weak so that we can elide them from
+   single-threaded processes.  */
+#ifndef __NO_WEAK_PTHREAD_ALIASES
+# ifdef weak_extern
+weak_extern (__pthread_mutex_init)
+weak_extern (__pthread_mutex_destroy)
+weak_extern (__pthread_mutex_lock)
+weak_extern (__pthread_mutex_trylock)
+weak_extern (__pthread_mutex_unlock)
+weak_extern (__pthread_mutexattr_init)
+weak_extern (__pthread_mutexattr_destroy)
+weak_extern (__pthread_mutexattr_settype)
+weak_extern (__pthread_rwlock_init)
+weak_extern (__pthread_rwlock_destroy)
+weak_extern (__pthread_rwlock_rdlock)
+weak_extern (__pthread_rwlock_tryrdlock)
+weak_extern (__pthread_rwlock_wrlock)
+weak_extern (__pthread_rwlock_trywrlock)
+weak_extern (__pthread_rwlock_unlock)
+weak_extern (__pthread_key_create)
+weak_extern (__pthread_setspecific)
+weak_extern (__pthread_getspecific)
+weak_extern (__pthread_once)
+weak_extern (__pthread_initialize)
+weak_extern (__pthread_atfork)
+weak_extern (_pthread_cleanup_push_defer)
+weak_extern (_pthread_cleanup_pop_restore)
+weak_extern (pthread_setcancelstate)
+# else
+#  pragma weak __pthread_mutex_init
+#  pragma weak __pthread_mutex_destroy
+#  pragma weak __pthread_mutex_lock
+#  pragma weak __pthread_mutex_trylock
+#  pragma weak __pthread_mutex_unlock
+#  pragma weak __pthread_mutexattr_init
+#  pragma weak __pthread_mutexattr_destroy
+#  pragma weak __pthread_mutexattr_settype
+#  pragma weak __pthread_rwlock_destroy
+#  pragma weak __pthread_rwlock_rdlock
+#  pragma weak __pthread_rwlock_tryrdlock
+#  pragma weak __pthread_rwlock_wrlock
+#  pragma weak __pthread_rwlock_trywrlock
+#  pragma weak __pthread_rwlock_unlock
+#  pragma weak __pthread_key_create
+#  pragma weak __pthread_setspecific
+#  pragma weak __pthread_getspecific
+#  pragma weak __pthread_once
+#  pragma weak __pthread_initialize
+#  pragma weak __pthread_atfork
+#  pragma weak _pthread_cleanup_push_defer
+#  pragma weak _pthread_cleanup_pop_restore
+#  pragma weak pthread_setcancelstate
+# endif
+#endif
+
+#endif	/* bits/libc-lockP.h */
diff --git a/sysdeps/nptl/bits/stdio-lock.h b/sysdeps/nptl/bits/stdio-lock.h
new file mode 100644
index 0000000..e2678cc
--- /dev/null
+++ b/sysdeps/nptl/bits/stdio-lock.h
@@ -0,0 +1,110 @@
+/* Thread package specific definitions of stream lock type.  NPTL version.
+   Copyright (C) 2000-2014 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/>.  */
+
+#ifndef _BITS_STDIO_LOCK_H
+#define _BITS_STDIO_LOCK_H 1
+
+#include <bits/libc-lock.h>
+#include <lowlevellock.h>
+
+
+/* The locking here is very inexpensive, even for inlining.  */
+#define _IO_lock_inexpensive	1
+
+typedef struct { int lock; int cnt; void *owner; } _IO_lock_t;
+
+#define _IO_lock_initializer { LLL_LOCK_INITIALIZER, 0, NULL }
+
+#define _IO_lock_init(_name) \
+  ((_name) = (_IO_lock_t) _IO_lock_initializer , 0)
+
+#define _IO_lock_fini(_name) \
+  ((void) 0)
+
+#define _IO_lock_lock(_name) \
+  do {									      \
+    void *__self = THREAD_SELF;						      \
+    if ((_name).owner != __self)					      \
+      {									      \
+	lll_lock ((_name).lock, LLL_PRIVATE);				      \
+        (_name).owner = __self;						      \
+      }									      \
+    ++(_name).cnt;							      \
+  } while (0)
+
+#define _IO_lock_trylock(_name) \
+  ({									      \
+    int __result = 0;							      \
+    void *__self = THREAD_SELF;						      \
+    if ((_name).owner != __self)					      \
+      {									      \
+        if (lll_trylock ((_name).lock) == 0)				      \
+          {								      \
+            (_name).owner = __self;					      \
+            (_name).cnt = 1;						      \
+          }								      \
+        else								      \
+          __result = EBUSY;						      \
+      }									      \
+    else								      \
+      ++(_name).cnt;							      \
+    __result;								      \
+  })
+
+#define _IO_lock_unlock(_name) \
+  do {									      \
+    if (--(_name).cnt == 0)						      \
+      {									      \
+        (_name).owner = NULL;						      \
+	lll_unlock ((_name).lock, LLL_PRIVATE);				      \
+      }									      \
+  } while (0)
+
+
+
+#define _IO_cleanup_region_start(_fct, _fp) \
+  __libc_cleanup_region_start (((_fp)->_flags & _IO_USER_LOCK) == 0, _fct, _fp)
+#define _IO_cleanup_region_start_noarg(_fct) \
+  __libc_cleanup_region_start (1, _fct, NULL)
+#define _IO_cleanup_region_end(_doit) \
+  __libc_cleanup_region_end (_doit)
+
+#if defined _LIBC && !defined NOT_IN_libc
+
+# ifdef __EXCEPTIONS
+#  define _IO_acquire_lock(_fp) \
+  do {									      \
+    _IO_FILE *_IO_acquire_lock_file					      \
+	__attribute__((cleanup (_IO_acquire_lock_fct)))			      \
+	= (_fp);							      \
+    _IO_flockfile (_IO_acquire_lock_file);
+#  define _IO_acquire_lock_clear_flags2(_fp) \
+  do {									      \
+    _IO_FILE *_IO_acquire_lock_file					      \
+	__attribute__((cleanup (_IO_acquire_lock_clear_flags2_fct)))	      \
+	= (_fp);							      \
+    _IO_flockfile (_IO_acquire_lock_file);
+# else
+#  define _IO_acquire_lock(_fp) _IO_acquire_lock_needs_exceptions_enabled
+#  define _IO_acquire_lock_clear_flags2(_fp) _IO_acquire_lock (_fp)
+# endif
+# define _IO_release_lock(_fp) ; } while (0)
+
+#endif
+
+#endif /* bits/stdio-lock.h */
diff --git a/sysdeps/nptl/configure b/sysdeps/nptl/configure
new file mode 100644
index 0000000..239a039
--- /dev/null
+++ b/sysdeps/nptl/configure
@@ -0,0 +1,89 @@
+# This file is generated from configure.ac by Autoconf.  DO NOT EDIT!
+
+if test "x$libc_cv_gcc___thread" != xyes; then
+  as_fn_error $? "compiler support for __thread is required" "$LINENO" 5
+fi
+
+if test "x${libc_cv_visibility_attribute}" != xyes ||
+   test "x${libc_cv_broken_visibility_attribute}" != xno; then
+  as_fn_error $? "working compiler support for visibility attribute is required" "$LINENO" 5
+fi
+
+if test "x$libc_cv_asm_cfi_directives" != xyes; then
+    case "$base_machine" in
+    i386 | x86_64 | powerpc | s390)
+      as_fn_error $? "CFI directive support in assembler is required" "$LINENO" 5 ;;
+    *) ;;
+  esac
+fi
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for forced unwind support" >&5
+$as_echo_n "checking for forced unwind support... " >&6; }
+if ${libc_cv_forced_unwind+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <unwind.h>
+int
+main ()
+{
+
+struct _Unwind_Exception exc;
+struct _Unwind_Context *context;
+_Unwind_GetCFA (context)
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  libc_cv_forced_unwind=yes
+else
+  libc_cv_forced_unwind=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_forced_unwind" >&5
+$as_echo "$libc_cv_forced_unwind" >&6; }
+if test $libc_cv_forced_unwind = yes; then
+  $as_echo "#define HAVE_FORCED_UNWIND 1" >>confdefs.h
+
+  old_CFLAGS="$CFLAGS"
+  CFLAGS="$CFLAGS -Werror -fexceptions"
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for C cleanup handling" >&5
+$as_echo_n "checking for C cleanup handling... " >&6; }
+if ${libc_cv_c_cleanup+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+extern void some_function (void);
+void cl (void *a) { }
+int
+main ()
+{
+
+  int a __attribute__ ((cleanup (cl)));
+  some_function ()
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  libc_cv_c_cleanup=yes
+else
+  libc_cv_c_cleanup=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_c_cleanup" >&5
+$as_echo "$libc_cv_c_cleanup" >&6; }
+  CFLAGS="$old_CFLAGS"
+  if test $libc_cv_c_cleanup = no; then
+    as_fn_error $? "the compiler must support C cleanup handling" "$LINENO" 5
+  fi
+else
+  as_fn_error $? "forced unwind support is required" "$LINENO" 5
+fi
diff --git a/sysdeps/nptl/configure.ac b/sysdeps/nptl/configure.ac
new file mode 100644
index 0000000..413af96
--- /dev/null
+++ b/sysdeps/nptl/configure.ac
@@ -0,0 +1,49 @@
+dnl configure fragment for new libpthread implementation.
+GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
+
+if test "x$libc_cv_gcc___thread" != xyes; then
+  AC_MSG_ERROR(compiler support for __thread is required)
+fi
+
+if test "x${libc_cv_visibility_attribute}" != xyes ||
+   test "x${libc_cv_broken_visibility_attribute}" != xno; then
+  AC_MSG_ERROR(working compiler support for visibility attribute is required)
+fi
+
+if test "x$libc_cv_asm_cfi_directives" != xyes; then
+  dnl We need this only for some architectures.
+  case "$base_machine" in
+    i386 | x86_64 | powerpc | s390)
+      AC_MSG_ERROR(CFI directive support in assembler is required) ;;
+    *) ;;
+  esac
+fi
+
+dnl Iff <unwind.h> is available, make sure it is the right one and it
+dnl contains struct _Unwind_Exception.
+AC_CACHE_CHECK(dnl
+for forced unwind support, libc_cv_forced_unwind, [dnl
+AC_TRY_COMPILE([#include <unwind.h>], [
+struct _Unwind_Exception exc;
+struct _Unwind_Context *context;
+_Unwind_GetCFA (context)],
+libc_cv_forced_unwind=yes, libc_cv_forced_unwind=no)])
+if test $libc_cv_forced_unwind = yes; then
+  AC_DEFINE(HAVE_FORCED_UNWIND)
+dnl Check for C cleanup handling.
+  old_CFLAGS="$CFLAGS"
+  CFLAGS="$CFLAGS -Werror -fexceptions"
+  AC_CACHE_CHECK([for C cleanup handling], libc_cv_c_cleanup, [dnl
+  AC_TRY_COMPILE([
+extern void some_function (void);
+void cl (void *a) { }], [
+  int a __attribute__ ((cleanup (cl)));
+  some_function ()],
+libc_cv_c_cleanup=yes, libc_cv_c_cleanup=no)])
+  CFLAGS="$old_CFLAGS"
+  if test $libc_cv_c_cleanup = no; then
+    AC_MSG_ERROR([the compiler must support C cleanup handling])
+  fi
+else
+  AC_MSG_ERROR(forced unwind support is required)
+fi
diff --git a/sysdeps/nptl/gai_misc.h b/sysdeps/nptl/gai_misc.h
new file mode 100644
index 0000000..946275e
--- /dev/null
+++ b/sysdeps/nptl/gai_misc.h
@@ -0,0 +1,121 @@
+/* Copyright (C) 2006-2014 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/>.  */
+
+/* We define a special synchronization primitive for AIO.  POSIX
+   conditional variables would be ideal but the pthread_cond_*wait
+   operations do not return on EINTR.  This is a requirement for
+   correct aio_suspend and lio_listio implementations.  */
+
+#include <assert.h>
+#include <signal.h>
+#include <pthreadP.h>
+#include <lowlevellock.h>
+
+#define DONT_NEED_GAI_MISC_COND	1
+
+#define GAI_MISC_NOTIFY(waitlist) \
+  do {									      \
+    if (*waitlist->counterp > 0 && --*waitlist->counterp == 0)		      \
+      lll_futex_wake (waitlist->counterp, 1, LLL_PRIVATE);		      \
+  } while (0)
+
+#define GAI_MISC_WAIT(result, futex, timeout, cancel) \
+  do {									      \
+    volatile int *futexaddr = &futex;					      \
+    int oldval = futex;							      \
+									      \
+    if (oldval != 0)							      \
+      {									      \
+	pthread_mutex_unlock (&__gai_requests_mutex);			      \
+									      \
+	int oldtype;							      \
+	if (cancel)							      \
+	  oldtype = LIBC_CANCEL_ASYNC ();				      \
+									      \
+	int status;							      \
+	do								      \
+	  {								      \
+	    status = lll_futex_timed_wait (futexaddr, oldval, timeout,	      \
+					   LLL_PRIVATE);		      \
+	    if (status != -EWOULDBLOCK)					      \
+	      break;							      \
+									      \
+	    oldval = *futexaddr;					      \
+	  }								      \
+	while (oldval != 0);						      \
+									      \
+	if (cancel)							      \
+	  LIBC_CANCEL_RESET (oldtype);					      \
+									      \
+	if (status == -EINTR)						      \
+	  result = EINTR;						      \
+	else if (status == -ETIMEDOUT)					      \
+	  result = EAGAIN;						      \
+	else								      \
+	  assert (status == 0 || status == -EWOULDBLOCK);		      \
+									      \
+	pthread_mutex_lock (&__gai_requests_mutex);			      \
+      }									      \
+  } while (0)
+
+
+#define gai_start_notify_thread __gai_start_notify_thread
+#define gai_create_helper_thread __gai_create_helper_thread
+
+extern inline void
+__gai_start_notify_thread (void)
+{
+  sigset_t ss;
+  sigemptyset (&ss);
+  INTERNAL_SYSCALL_DECL (err);
+  INTERNAL_SYSCALL (rt_sigprocmask, err, 4, SIG_SETMASK, &ss, NULL, _NSIG / 8);
+}
+
+extern inline int
+__gai_create_helper_thread (pthread_t *threadp, void *(*tf) (void *),
+			    void *arg)
+{
+  pthread_attr_t attr;
+
+  /* Make sure the thread is created detached.  */
+  pthread_attr_init (&attr);
+  pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
+
+  /* The helper thread needs only very little resources.  */
+  (void) pthread_attr_setstacksize (&attr,
+				    __pthread_get_minstack (&attr)
+				    + 4 * PTHREAD_STACK_MIN);
+
+  /* Block all signals in the helper thread.  To do this thoroughly we
+     temporarily have to block all signals here.  */
+  sigset_t ss;
+  sigset_t oss;
+  sigfillset (&ss);
+  INTERNAL_SYSCALL_DECL (err);
+  INTERNAL_SYSCALL (rt_sigprocmask, err, 4, SIG_SETMASK, &ss, &oss, _NSIG / 8);
+
+  int ret = pthread_create (threadp, &attr, tf, arg);
+
+  /* Restore the signal mask.  */
+  INTERNAL_SYSCALL (rt_sigprocmask, err, 4, SIG_SETMASK, &oss, NULL,
+		    _NSIG / 8);
+
+  (void) pthread_attr_destroy (&attr);
+  return ret;
+}
+
+#include_next <gai_misc.h>
diff --git a/sysdeps/nptl/librt-cancellation.c b/sysdeps/nptl/librt-cancellation.c
new file mode 100644
index 0000000..e512929
--- /dev/null
+++ b/sysdeps/nptl/librt-cancellation.c
@@ -0,0 +1,24 @@
+/* Copyright (C) 2002-2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
+
+   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/>.  */
+
+#include "pthreadP.h"
+
+
+#define __pthread_enable_asynccancel __librt_enable_asynccancel
+#define __pthread_disable_asynccancel __librt_disable_asynccancel
+#include <nptl/cancellation.c>
diff --git a/sysdeps/nptl/malloc-machine.h b/sysdeps/nptl/malloc-machine.h
new file mode 100644
index 0000000..ad480a3
--- /dev/null
+++ b/sysdeps/nptl/malloc-machine.h
@@ -0,0 +1,73 @@
+/* Basic platform-independent macro definitions for mutexes,
+   thread-specific data and parameters for malloc.
+   Copyright (C) 2003-2014 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/>.  */
+
+#ifndef _MALLOC_MACHINE_H
+#define _MALLOC_MACHINE_H
+
+#undef thread_atfork_static
+
+#include <atomic.h>
+#include <bits/libc-lock.h>
+
+__libc_lock_define (typedef, mutex_t)
+
+#define mutex_init(m)		__libc_lock_init (*(m))
+#define mutex_lock(m)		__libc_lock_lock (*(m))
+#define mutex_trylock(m)	__libc_lock_trylock (*(m))
+#define mutex_unlock(m)		__libc_lock_unlock (*(m))
+#define MUTEX_INITIALIZER	LLL_LOCK_INITIALIZER
+
+/* This is defined by newer gcc version unique for each module.  */
+extern void *__dso_handle __attribute__ ((__weak__));
+
+#include <fork.h>
+
+#define ATFORK_MEM static struct fork_handler atfork_mem
+
+#ifdef SHARED
+# define thread_atfork(prepare, parent, child) \
+  atfork_mem.prepare_handler = prepare;					      \
+  atfork_mem.parent_handler = parent;					      \
+  atfork_mem.child_handler = child;					      \
+  atfork_mem.dso_handle = __dso_handle;					      \
+  atfork_mem.refcntr = 1;						      \
+  __linkin_atfork (&atfork_mem)
+#else
+# define thread_atfork(prepare, parent, child) \
+  atfork_mem.prepare_handler = prepare;					      \
+  atfork_mem.parent_handler = parent;					      \
+  atfork_mem.child_handler = child;					      \
+  atfork_mem.dso_handle = &__dso_handle == NULL ? NULL : __dso_handle;	      \
+  atfork_mem.refcntr = 1;						      \
+  __linkin_atfork (&atfork_mem)
+#endif
+
+/* thread specific data for glibc */
+
+#include <bits/libc-tsd.h>
+
+typedef int tsd_key_t[1];	/* no key data structure, libc magic does it */
+__libc_tsd_define (static, void *, MALLOC)	/* declaration/common definition */
+#define tsd_key_create(key, destr)	((void) (key))
+#define tsd_setspecific(key, data)	__libc_tsd_set (void *, MALLOC, (data))
+#define tsd_getspecific(key, vptr)	((vptr) = __libc_tsd_get (void *, MALLOC))
+
+#include <sysdeps/generic/malloc-machine.h>
+
+#endif /* !defined(_MALLOC_MACHINE_H) */
diff --git a/sysdeps/nptl/pthread-functions.h b/sysdeps/nptl/pthread-functions.h
new file mode 100644
index 0000000..6314425
--- /dev/null
+++ b/sysdeps/nptl/pthread-functions.h
@@ -0,0 +1,117 @@
+/* Copyright (C) 2003-2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
+
+   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/>.  */
+
+#ifndef _PTHREAD_FUNCTIONS_H
+#define _PTHREAD_FUNCTIONS_H	1
+
+#include <pthread.h>
+#include <setjmp.h>
+#include <internaltypes.h>
+#include <sysdep.h>
+
+struct xid_command;
+
+/* Data type shared with libc.  The libc uses it to pass on calls to
+   the thread functions.  */
+struct pthread_functions
+{
+  int (*ptr_pthread_attr_destroy) (pthread_attr_t *);
+  int (*ptr___pthread_attr_init_2_0) (pthread_attr_t *);
+  int (*ptr___pthread_attr_init_2_1) (pthread_attr_t *);
+  int (*ptr_pthread_attr_getdetachstate) (const pthread_attr_t *, int *);
+  int (*ptr_pthread_attr_setdetachstate) (pthread_attr_t *, int);
+  int (*ptr_pthread_attr_getinheritsched) (const pthread_attr_t *, int *);
+  int (*ptr_pthread_attr_setinheritsched) (pthread_attr_t *, int);
+  int (*ptr_pthread_attr_getschedparam) (const pthread_attr_t *,
+					 struct sched_param *);
+  int (*ptr_pthread_attr_setschedparam) (pthread_attr_t *,
+					 const struct sched_param *);
+  int (*ptr_pthread_attr_getschedpolicy) (const pthread_attr_t *, int *);
+  int (*ptr_pthread_attr_setschedpolicy) (pthread_attr_t *, int);
+  int (*ptr_pthread_attr_getscope) (const pthread_attr_t *, int *);
+  int (*ptr_pthread_attr_setscope) (pthread_attr_t *, int);
+  int (*ptr_pthread_condattr_destroy) (pthread_condattr_t *);
+  int (*ptr_pthread_condattr_init) (pthread_condattr_t *);
+  int (*ptr___pthread_cond_broadcast) (pthread_cond_t *);
+  int (*ptr___pthread_cond_destroy) (pthread_cond_t *);
+  int (*ptr___pthread_cond_init) (pthread_cond_t *,
+				  const pthread_condattr_t *);
+  int (*ptr___pthread_cond_signal) (pthread_cond_t *);
+  int (*ptr___pthread_cond_wait) (pthread_cond_t *, pthread_mutex_t *);
+  int (*ptr___pthread_cond_timedwait) (pthread_cond_t *, pthread_mutex_t *,
+				       const struct timespec *);
+  int (*ptr___pthread_cond_broadcast_2_0) (pthread_cond_2_0_t *);
+  int (*ptr___pthread_cond_destroy_2_0) (pthread_cond_2_0_t *);
+  int (*ptr___pthread_cond_init_2_0) (pthread_cond_2_0_t *,
+				      const pthread_condattr_t *);
+  int (*ptr___pthread_cond_signal_2_0) (pthread_cond_2_0_t *);
+  int (*ptr___pthread_cond_wait_2_0) (pthread_cond_2_0_t *, pthread_mutex_t *);
+  int (*ptr___pthread_cond_timedwait_2_0) (pthread_cond_2_0_t *,
+					   pthread_mutex_t *,
+					   const struct timespec *);
+  int (*ptr_pthread_equal) (pthread_t, pthread_t);
+  void (*ptr___pthread_exit) (void *) __attribute__ ((__noreturn__));
+  int (*ptr_pthread_getschedparam) (pthread_t, int *, struct sched_param *);
+  int (*ptr_pthread_setschedparam) (pthread_t, int,
+				    const struct sched_param *);
+  int (*ptr_pthread_mutex_destroy) (pthread_mutex_t *);
+  int (*ptr_pthread_mutex_init) (pthread_mutex_t *,
+				 const pthread_mutexattr_t *);
+  int (*ptr_pthread_mutex_lock) (pthread_mutex_t *);
+  int (*ptr_pthread_mutex_unlock) (pthread_mutex_t *);
+  pthread_t (*ptr_pthread_self) (void);
+  int (*ptr_pthread_setcancelstate) (int, int *);
+  int (*ptr_pthread_setcanceltype) (int, int *);
+  void (*ptr___pthread_cleanup_upto) (__jmp_buf, char *);
+  int (*ptr___pthread_once) (pthread_once_t *, void (*) (void));
+  int (*ptr___pthread_rwlock_rdlock) (pthread_rwlock_t *);
+  int (*ptr___pthread_rwlock_wrlock) (pthread_rwlock_t *);
+  int (*ptr___pthread_rwlock_unlock) (pthread_rwlock_t *);
+  int (*ptr___pthread_key_create) (pthread_key_t *, void (*) (void *));
+  void *(*ptr___pthread_getspecific) (pthread_key_t);
+  int (*ptr___pthread_setspecific) (pthread_key_t, const void *);
+  void (*ptr__pthread_cleanup_push_defer) (struct _pthread_cleanup_buffer *,
+					   void (*) (void *), void *);
+  void (*ptr__pthread_cleanup_pop_restore) (struct _pthread_cleanup_buffer *,
+					    int);
+#define HAVE_PTR_NTHREADS
+  unsigned int *ptr_nthreads;
+  void (*ptr___pthread_unwind) (__pthread_unwind_buf_t *)
+       __attribute ((noreturn)) __cleanup_fct_attribute;
+  void (*ptr__nptl_deallocate_tsd) (void);
+  int (*ptr__nptl_setxid) (struct xid_command *);
+  void (*ptr_freeres) (void);
+  void (*ptr_set_robust) (struct pthread *);
+};
+
+/* Variable in libc.so.  */
+extern struct pthread_functions __libc_pthread_functions attribute_hidden;
+extern int __libc_pthread_functions_init attribute_hidden;
+
+#ifdef PTR_DEMANGLE
+# define PTHFCT_CALL(fct, params) \
+  ({ __typeof (__libc_pthread_functions.fct) __p;			      \
+     __p = __libc_pthread_functions.fct;				      \
+     PTR_DEMANGLE (__p);						      \
+     __p params; })
+#else
+# define PTHFCT_CALL(fct, params) \
+  __libc_pthread_functions.fct params
+#endif
+
+#endif	/* pthread-functions.h */
diff --git a/sysdeps/nptl/pthread.h b/sysdeps/nptl/pthread.h
new file mode 100644
index 0000000..40a3e21
--- /dev/null
+++ b/sysdeps/nptl/pthread.h
@@ -0,0 +1,1163 @@
+/* Copyright (C) 2002-2014 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/>.  */
+
+#ifndef _PTHREAD_H
+#define _PTHREAD_H	1
+
+#include <features.h>
+#include <endian.h>
+#include <sched.h>
+#include <time.h>
+
+#include <bits/pthreadtypes.h>
+#include <bits/setjmp.h>
+#include <bits/wordsize.h>
+
+
+/* Detach state.  */
+enum
+{
+  PTHREAD_CREATE_JOINABLE,
+#define PTHREAD_CREATE_JOINABLE	PTHREAD_CREATE_JOINABLE
+  PTHREAD_CREATE_DETACHED
+#define PTHREAD_CREATE_DETACHED	PTHREAD_CREATE_DETACHED
+};
+
+
+/* Mutex types.  */
+enum
+{
+  PTHREAD_MUTEX_TIMED_NP,
+  PTHREAD_MUTEX_RECURSIVE_NP,
+  PTHREAD_MUTEX_ERRORCHECK_NP,
+  PTHREAD_MUTEX_ADAPTIVE_NP
+#if defined __USE_UNIX98 || defined __USE_XOPEN2K8
+  ,
+  PTHREAD_MUTEX_NORMAL = PTHREAD_MUTEX_TIMED_NP,
+  PTHREAD_MUTEX_RECURSIVE = PTHREAD_MUTEX_RECURSIVE_NP,
+  PTHREAD_MUTEX_ERRORCHECK = PTHREAD_MUTEX_ERRORCHECK_NP,
+  PTHREAD_MUTEX_DEFAULT = PTHREAD_MUTEX_NORMAL
+#endif
+#ifdef __USE_GNU
+  /* For compatibility.  */
+  , PTHREAD_MUTEX_FAST_NP = PTHREAD_MUTEX_TIMED_NP
+#endif
+};
+
+
+#ifdef __USE_XOPEN2K
+/* Robust mutex or not flags.  */
+enum
+{
+  PTHREAD_MUTEX_STALLED,
+  PTHREAD_MUTEX_STALLED_NP = PTHREAD_MUTEX_STALLED,
+  PTHREAD_MUTEX_ROBUST,
+  PTHREAD_MUTEX_ROBUST_NP = PTHREAD_MUTEX_ROBUST
+};
+#endif
+
+
+#if defined __USE_POSIX199506 || defined __USE_UNIX98
+/* Mutex protocols.  */
+enum
+{
+  PTHREAD_PRIO_NONE,
+  PTHREAD_PRIO_INHERIT,
+  PTHREAD_PRIO_PROTECT
+};
+#endif
+
+
+#ifdef __PTHREAD_MUTEX_HAVE_PREV
+# define PTHREAD_MUTEX_INITIALIZER \
+  { { 0, 0, 0, 0, 0, __PTHREAD_SPINS, { 0, 0 } } }
+# ifdef __USE_GNU
+#  define PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP \
+  { { 0, 0, 0, 0, PTHREAD_MUTEX_RECURSIVE_NP, __PTHREAD_SPINS, { 0, 0 } } }
+#  define PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP \
+  { { 0, 0, 0, 0, PTHREAD_MUTEX_ERRORCHECK_NP, __PTHREAD_SPINS, { 0, 0 } } }
+#  define PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP \
+  { { 0, 0, 0, 0, PTHREAD_MUTEX_ADAPTIVE_NP, __PTHREAD_SPINS, { 0, 0 } } }
+#  define PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP \
+  { { 0, 0, 0, 0, PTHREAD_MUTEX_ADAPTIVE_NP, __PTHREAD_SPINS, { 0, 0 } } }
+
+# endif
+#else
+# define PTHREAD_MUTEX_INITIALIZER \
+  { { 0, 0, 0, 0, 0, { __PTHREAD_SPINS } } }
+# ifdef __USE_GNU
+#  define PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP \
+  { { 0, 0, 0, PTHREAD_MUTEX_RECURSIVE_NP, 0, { __PTHREAD_SPINS } } }
+#  define PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP \
+  { { 0, 0, 0, PTHREAD_MUTEX_ERRORCHECK_NP, 0, { __PTHREAD_SPINS } } }
+#  define PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP \
+  { { 0, 0, 0, PTHREAD_MUTEX_ADAPTIVE_NP, 0, { __PTHREAD_SPINS } } }
+
+# endif
+#endif
+
+
+/* Read-write lock types.  */
+#if defined __USE_UNIX98 || defined __USE_XOPEN2K
+enum
+{
+  PTHREAD_RWLOCK_PREFER_READER_NP,
+  PTHREAD_RWLOCK_PREFER_WRITER_NP,
+  PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP,
+  PTHREAD_RWLOCK_DEFAULT_NP = PTHREAD_RWLOCK_PREFER_READER_NP
+};
+
+/* Define __PTHREAD_RWLOCK_INT_FLAGS_SHARED to 1 if pthread_rwlock_t
+   has the shared field.  All 64-bit architectures have the shared field
+   in pthread_rwlock_t.  */
+#ifndef __PTHREAD_RWLOCK_INT_FLAGS_SHARED
+# if __WORDSIZE == 64
+#  define __PTHREAD_RWLOCK_INT_FLAGS_SHARED 1
+# endif
+#endif
+
+/* Read-write lock initializers.  */
+# define PTHREAD_RWLOCK_INITIALIZER \
+  { { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } }
+# ifdef __USE_GNU
+#  ifdef __PTHREAD_RWLOCK_INT_FLAGS_SHARED
+#   define PTHREAD_RWLOCK_WRITER_NONRECURSIVE_INITIALIZER_NP \
+  { { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,					      \
+	PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP } }
+#  else
+#   if __BYTE_ORDER == __LITTLE_ENDIAN
+#    define PTHREAD_RWLOCK_WRITER_NONRECURSIVE_INITIALIZER_NP \
+  { { 0, 0, 0, 0, 0, 0, PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP, \
+      0, 0, 0, 0 } }
+#   else
+#    define PTHREAD_RWLOCK_WRITER_NONRECURSIVE_INITIALIZER_NP \
+  { { 0, 0, 0, 0, 0, 0, 0, 0, 0, PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP,\
+      0 } }
+#   endif
+#  endif
+# endif
+#endif  /* Unix98 or XOpen2K */
+
+
+/* Scheduler inheritance.  */
+enum
+{
+  PTHREAD_INHERIT_SCHED,
+#define PTHREAD_INHERIT_SCHED   PTHREAD_INHERIT_SCHED
+  PTHREAD_EXPLICIT_SCHED
+#define PTHREAD_EXPLICIT_SCHED  PTHREAD_EXPLICIT_SCHED
+};
+
+
+/* Scope handling.  */
+enum
+{
+  PTHREAD_SCOPE_SYSTEM,
+#define PTHREAD_SCOPE_SYSTEM    PTHREAD_SCOPE_SYSTEM
+  PTHREAD_SCOPE_PROCESS
+#define PTHREAD_SCOPE_PROCESS   PTHREAD_SCOPE_PROCESS
+};
+
+
+/* Process shared or private flag.  */
+enum
+{
+  PTHREAD_PROCESS_PRIVATE,
+#define PTHREAD_PROCESS_PRIVATE PTHREAD_PROCESS_PRIVATE
+  PTHREAD_PROCESS_SHARED
+#define PTHREAD_PROCESS_SHARED  PTHREAD_PROCESS_SHARED
+};
+
+
+
+/* Conditional variable handling.  */
+#define PTHREAD_COND_INITIALIZER { { 0, 0, 0, 0, 0, (void *) 0, 0, 0 } }
+
+
+/* Cleanup buffers */
+struct _pthread_cleanup_buffer
+{
+  void (*__routine) (void *);             /* Function to call.  */
+  void *__arg;                            /* Its argument.  */
+  int __canceltype;                       /* Saved cancellation type. */
+  struct _pthread_cleanup_buffer *__prev; /* Chaining of cleanup functions.  */
+};
+
+/* Cancellation */
+enum
+{
+  PTHREAD_CANCEL_ENABLE,
+#define PTHREAD_CANCEL_ENABLE   PTHREAD_CANCEL_ENABLE
+  PTHREAD_CANCEL_DISABLE
+#define PTHREAD_CANCEL_DISABLE  PTHREAD_CANCEL_DISABLE
+};
+enum
+{
+  PTHREAD_CANCEL_DEFERRED,
+#define PTHREAD_CANCEL_DEFERRED	PTHREAD_CANCEL_DEFERRED
+  PTHREAD_CANCEL_ASYNCHRONOUS
+#define PTHREAD_CANCEL_ASYNCHRONOUS	PTHREAD_CANCEL_ASYNCHRONOUS
+};
+#define PTHREAD_CANCELED ((void *) -1)
+
+
+/* Single execution handling.  */
+#define PTHREAD_ONCE_INIT 0
+
+
+#ifdef __USE_XOPEN2K
+/* Value returned by 'pthread_barrier_wait' for one of the threads after
+   the required number of threads have called this function.
+   -1 is distinct from 0 and all errno constants */
+# define PTHREAD_BARRIER_SERIAL_THREAD -1
+#endif
+
+
+__BEGIN_DECLS
+
+/* Create a new thread, starting with execution of START-ROUTINE
+   getting passed ARG.  Creation attributed come from ATTR.  The new
+   handle is stored in *NEWTHREAD.  */
+extern int pthread_create (pthread_t *__restrict __newthread,
+			   const pthread_attr_t *__restrict __attr,
+			   void *(*__start_routine) (void *),
+			   void *__restrict __arg) __THROWNL __nonnull ((1, 3));
+
+/* Terminate calling thread.
+
+   The registered cleanup handlers are called via exception handling
+   so we cannot mark this function with __THROW.*/
+extern void pthread_exit (void *__retval) __attribute__ ((__noreturn__));
+
+/* Make calling thread wait for termination of the thread TH.  The
+   exit status of the thread is stored in *THREAD_RETURN, if THREAD_RETURN
+   is not NULL.
+
+   This function is a cancellation point and therefore not marked with
+   __THROW.  */
+extern int pthread_join (pthread_t __th, void **__thread_return);
+
+#ifdef __USE_GNU
+/* Check whether thread TH has terminated.  If yes return the status of
+   the thread in *THREAD_RETURN, if THREAD_RETURN is not NULL.  */
+extern int pthread_tryjoin_np (pthread_t __th, void **__thread_return) __THROW;
+
+/* Make calling thread wait for termination of the thread TH, but only
+   until TIMEOUT.  The exit status of the thread is stored in
+   *THREAD_RETURN, if THREAD_RETURN is not NULL.
+
+   This function is a cancellation point and therefore not marked with
+   __THROW.  */
+extern int pthread_timedjoin_np (pthread_t __th, void **__thread_return,
+				 const struct timespec *__abstime);
+#endif
+
+/* Indicate that the thread TH is never to be joined with PTHREAD_JOIN.
+   The resources of TH will therefore be freed immediately when it
+   terminates, instead of waiting for another thread to perform PTHREAD_JOIN
+   on it.  */
+extern int pthread_detach (pthread_t __th) __THROW;
+
+
+/* Obtain the identifier of the current thread.  */
+extern pthread_t pthread_self (void) __THROW __attribute__ ((__const__));
+
+/* Compare two thread identifiers.  */
+extern int pthread_equal (pthread_t __thread1, pthread_t __thread2)
+  __THROW __attribute__ ((__const__));
+
+
+/* Thread attribute handling.  */
+
+/* Initialize thread attribute *ATTR with default attributes
+   (detachstate is PTHREAD_JOINABLE, scheduling policy is SCHED_OTHER,
+    no user-provided stack).  */
+extern int pthread_attr_init (pthread_attr_t *__attr) __THROW __nonnull ((1));
+
+/* Destroy thread attribute *ATTR.  */
+extern int pthread_attr_destroy (pthread_attr_t *__attr)
+     __THROW __nonnull ((1));
+
+/* Get detach state attribute.  */
+extern int pthread_attr_getdetachstate (const pthread_attr_t *__attr,
+					int *__detachstate)
+     __THROW __nonnull ((1, 2));
+
+/* Set detach state attribute.  */
+extern int pthread_attr_setdetachstate (pthread_attr_t *__attr,
+					int __detachstate)
+     __THROW __nonnull ((1));
+
+
+/* Get the size of the guard area created for stack overflow protection.  */
+extern int pthread_attr_getguardsize (const pthread_attr_t *__attr,
+				      size_t *__guardsize)
+     __THROW __nonnull ((1, 2));
+
+/* Set the size of the guard area created for stack overflow protection.  */
+extern int pthread_attr_setguardsize (pthread_attr_t *__attr,
+				      size_t __guardsize)
+     __THROW __nonnull ((1));
+
+
+/* Return in *PARAM the scheduling parameters of *ATTR.  */
+extern int pthread_attr_getschedparam (const pthread_attr_t *__restrict __attr,
+				       struct sched_param *__restrict __param)
+     __THROW __nonnull ((1, 2));
+
+/* Set scheduling parameters (priority, etc) in *ATTR according to PARAM.  */
+extern int pthread_attr_setschedparam (pthread_attr_t *__restrict __attr,
+				       const struct sched_param *__restrict
+				       __param) __THROW __nonnull ((1, 2));
+
+/* Return in *POLICY the scheduling policy of *ATTR.  */
+extern int pthread_attr_getschedpolicy (const pthread_attr_t *__restrict
+					__attr, int *__restrict __policy)
+     __THROW __nonnull ((1, 2));
+
+/* Set scheduling policy in *ATTR according to POLICY.  */
+extern int pthread_attr_setschedpolicy (pthread_attr_t *__attr, int __policy)
+     __THROW __nonnull ((1));
+
+/* Return in *INHERIT the scheduling inheritance mode of *ATTR.  */
+extern int pthread_attr_getinheritsched (const pthread_attr_t *__restrict
+					 __attr, int *__restrict __inherit)
+     __THROW __nonnull ((1, 2));
+
+/* Set scheduling inheritance mode in *ATTR according to INHERIT.  */
+extern int pthread_attr_setinheritsched (pthread_attr_t *__attr,
+					 int __inherit)
+     __THROW __nonnull ((1));
+
+
+/* Return in *SCOPE the scheduling contention scope of *ATTR.  */
+extern int pthread_attr_getscope (const pthread_attr_t *__restrict __attr,
+				  int *__restrict __scope)
+     __THROW __nonnull ((1, 2));
+
+/* Set scheduling contention scope in *ATTR according to SCOPE.  */
+extern int pthread_attr_setscope (pthread_attr_t *__attr, int __scope)
+     __THROW __nonnull ((1));
+
+/* Return the previously set address for the stack.  */
+extern int pthread_attr_getstackaddr (const pthread_attr_t *__restrict
+				      __attr, void **__restrict __stackaddr)
+     __THROW __nonnull ((1, 2)) __attribute_deprecated__;
+
+/* Set the starting address of the stack of the thread to be created.
+   Depending on whether the stack grows up or down the value must either
+   be higher or lower than all the address in the memory block.  The
+   minimal size of the block must be PTHREAD_STACK_MIN.  */
+extern int pthread_attr_setstackaddr (pthread_attr_t *__attr,
+				      void *__stackaddr)
+     __THROW __nonnull ((1)) __attribute_deprecated__;
+
+/* Return the currently used minimal stack size.  */
+extern int pthread_attr_getstacksize (const pthread_attr_t *__restrict
+				      __attr, size_t *__restrict __stacksize)
+     __THROW __nonnull ((1, 2));
+
+/* Add information about the minimum stack size needed for the thread
+   to be started.  This size must never be less than PTHREAD_STACK_MIN
+   and must also not exceed the system limits.  */
+extern int pthread_attr_setstacksize (pthread_attr_t *__attr,
+				      size_t __stacksize)
+     __THROW __nonnull ((1));
+
+#ifdef __USE_XOPEN2K
+/* Return the previously set address for the stack.  */
+extern int pthread_attr_getstack (const pthread_attr_t *__restrict __attr,
+				  void **__restrict __stackaddr,
+				  size_t *__restrict __stacksize)
+     __THROW __nonnull ((1, 2, 3));
+
+/* The following two interfaces are intended to replace the last two.  They
+   require setting the address as well as the size since only setting the
+   address will make the implementation on some architectures impossible.  */
+extern int pthread_attr_setstack (pthread_attr_t *__attr, void *__stackaddr,
+				  size_t __stacksize) __THROW __nonnull ((1));
+#endif
+
+#ifdef __USE_GNU
+/* Thread created with attribute ATTR will be limited to run only on
+   the processors represented in CPUSET.  */
+extern int pthread_attr_setaffinity_np (pthread_attr_t *__attr,
+					size_t __cpusetsize,
+					const cpu_set_t *__cpuset)
+     __THROW __nonnull ((1, 3));
+
+/* Get bit set in CPUSET representing the processors threads created with
+   ATTR can run on.  */
+extern int pthread_attr_getaffinity_np (const pthread_attr_t *__attr,
+					size_t __cpusetsize,
+					cpu_set_t *__cpuset)
+     __THROW __nonnull ((1, 3));
+
+/* Get the default attributes used by pthread_create in this process.  */
+extern int pthread_getattr_default_np (pthread_attr_t *__attr)
+     __THROW __nonnull ((1));
+
+/* Set the default attributes to be used by pthread_create in this
+   process.  */
+extern int pthread_setattr_default_np (const pthread_attr_t *__attr)
+     __THROW __nonnull ((1));
+
+/* Initialize thread attribute *ATTR with attributes corresponding to the
+   already running thread TH.  It shall be called on uninitialized ATTR
+   and destroyed with pthread_attr_destroy when no longer needed.  */
+extern int pthread_getattr_np (pthread_t __th, pthread_attr_t *__attr)
+     __THROW __nonnull ((2));
+#endif
+
+
+/* Functions for scheduling control.  */
+
+/* Set the scheduling parameters for TARGET_THREAD according to POLICY
+   and *PARAM.  */
+extern int pthread_setschedparam (pthread_t __target_thread, int __policy,
+				  const struct sched_param *__param)
+     __THROW __nonnull ((3));
+
+/* Return in *POLICY and *PARAM the scheduling parameters for TARGET_THREAD. */
+extern int pthread_getschedparam (pthread_t __target_thread,
+				  int *__restrict __policy,
+				  struct sched_param *__restrict __param)
+     __THROW __nonnull ((2, 3));
+
+/* Set the scheduling priority for TARGET_THREAD.  */
+extern int pthread_setschedprio (pthread_t __target_thread, int __prio)
+     __THROW;
+
+
+#ifdef __USE_GNU
+/* Get thread name visible in the kernel and its interfaces.  */
+extern int pthread_getname_np (pthread_t __target_thread, char *__buf,
+			       size_t __buflen)
+     __THROW __nonnull ((2));
+
+/* Set thread name visible in the kernel and its interfaces.  */
+extern int pthread_setname_np (pthread_t __target_thread, const char *__name)
+     __THROW __nonnull ((2));
+#endif
+
+
+#ifdef __USE_UNIX98
+/* Determine level of concurrency.  */
+extern int pthread_getconcurrency (void) __THROW;
+
+/* Set new concurrency level to LEVEL.  */
+extern int pthread_setconcurrency (int __level) __THROW;
+#endif
+
+#ifdef __USE_GNU
+/* Yield the processor to another thread or process.
+   This function is similar to the POSIX `sched_yield' function but
+   might be differently implemented in the case of a m-on-n thread
+   implementation.  */
+extern int pthread_yield (void) __THROW;
+
+
+/* Limit specified thread TH to run only on the processors represented
+   in CPUSET.  */
+extern int pthread_setaffinity_np (pthread_t __th, size_t __cpusetsize,
+				   const cpu_set_t *__cpuset)
+     __THROW __nonnull ((3));
+
+/* Get bit set in CPUSET representing the processors TH can run on.  */
+extern int pthread_getaffinity_np (pthread_t __th, size_t __cpusetsize,
+				   cpu_set_t *__cpuset)
+     __THROW __nonnull ((3));
+#endif
+
+
+/* Functions for handling initialization.  */
+
+/* Guarantee that the initialization function INIT_ROUTINE will be called
+   only once, even if pthread_once is executed several times with the
+   same ONCE_CONTROL argument. ONCE_CONTROL must point to a static or
+   extern variable initialized to PTHREAD_ONCE_INIT.
+
+   The initialization functions might throw exception which is why
+   this function is not marked with __THROW.  */
+extern int pthread_once (pthread_once_t *__once_control,
+			 void (*__init_routine) (void)) __nonnull ((1, 2));
+
+
+/* Functions for handling cancellation.
+
+   Note that these functions are explicitly not marked to not throw an
+   exception in C++ code.  If cancellation is implemented by unwinding
+   this is necessary to have the compiler generate the unwind information.  */
+
+/* Set cancelability state of current thread to STATE, returning old
+   state in *OLDSTATE if OLDSTATE is not NULL.  */
+extern int pthread_setcancelstate (int __state, int *__oldstate);
+
+/* Set cancellation state of current thread to TYPE, returning the old
+   type in *OLDTYPE if OLDTYPE is not NULL.  */
+extern int pthread_setcanceltype (int __type, int *__oldtype);
+
+/* Cancel THREAD immediately or at the next possibility.  */
+extern int pthread_cancel (pthread_t __th);
+
+/* Test for pending cancellation for the current thread and terminate
+   the thread as per pthread_exit(PTHREAD_CANCELED) if it has been
+   cancelled.  */
+extern void pthread_testcancel (void);
+
+
+/* Cancellation handling with integration into exception handling.  */
+
+typedef struct
+{
+  struct
+  {
+    __jmp_buf __cancel_jmp_buf;
+    int __mask_was_saved;
+  } __cancel_jmp_buf[1];
+  void *__pad[4];
+} __pthread_unwind_buf_t __attribute__ ((__aligned__));
+
+/* No special attributes by default.  */
+#ifndef __cleanup_fct_attribute
+# define __cleanup_fct_attribute
+#endif
+
+
+/* Structure to hold the cleanup handler information.  */
+struct __pthread_cleanup_frame
+{
+  void (*__cancel_routine) (void *);
+  void *__cancel_arg;
+  int __do_it;
+  int __cancel_type;
+};
+
+#if defined __GNUC__ && defined __EXCEPTIONS
+# ifdef __cplusplus
+/* Class to handle cancellation handler invocation.  */
+class __pthread_cleanup_class
+{
+  void (*__cancel_routine) (void *);
+  void *__cancel_arg;
+  int __do_it;
+  int __cancel_type;
+
+ public:
+  __pthread_cleanup_class (void (*__fct) (void *), void *__arg)
+    : __cancel_routine (__fct), __cancel_arg (__arg), __do_it (1) { }
+  ~__pthread_cleanup_class () { if (__do_it) __cancel_routine (__cancel_arg); }
+  void __setdoit (int __newval) { __do_it = __newval; }
+  void __defer () { pthread_setcanceltype (PTHREAD_CANCEL_DEFERRED,
+					   &__cancel_type); }
+  void __restore () const { pthread_setcanceltype (__cancel_type, 0); }
+};
+
+/* Install a cleanup handler: ROUTINE will be called with arguments ARG
+   when the thread is canceled or calls pthread_exit.  ROUTINE will also
+   be called with arguments ARG when the matching pthread_cleanup_pop
+   is executed with non-zero EXECUTE argument.
+
+   pthread_cleanup_push and pthread_cleanup_pop are macros and must always
+   be used in matching pairs at the same nesting level of braces.  */
+#  define pthread_cleanup_push(routine, arg) \
+  do {									      \
+    __pthread_cleanup_class __clframe (routine, arg)
+
+/* Remove a cleanup handler installed by the matching pthread_cleanup_push.
+   If EXECUTE is non-zero, the handler function is called. */
+#  define pthread_cleanup_pop(execute) \
+    __clframe.__setdoit (execute);					      \
+  } while (0)
+
+#  ifdef __USE_GNU
+/* Install a cleanup handler as pthread_cleanup_push does, but also
+   saves the current cancellation type and sets it to deferred
+   cancellation.  */
+#   define pthread_cleanup_push_defer_np(routine, arg) \
+  do {									      \
+    __pthread_cleanup_class __clframe (routine, arg);			      \
+    __clframe.__defer ()
+
+/* Remove a cleanup handler as pthread_cleanup_pop does, but also
+   restores the cancellation type that was in effect when the matching
+   pthread_cleanup_push_defer was called.  */
+#   define pthread_cleanup_pop_restore_np(execute) \
+    __clframe.__restore ();						      \
+    __clframe.__setdoit (execute);					      \
+  } while (0)
+#  endif
+# else
+/* Function called to call the cleanup handler.  As an extern inline
+   function the compiler is free to decide inlining the change when
+   needed or fall back on the copy which must exist somewhere
+   else.  */
+__extern_inline void
+__pthread_cleanup_routine (struct __pthread_cleanup_frame *__frame)
+{
+  if (__frame->__do_it)
+    __frame->__cancel_routine (__frame->__cancel_arg);
+}
+
+/* Install a cleanup handler: ROUTINE will be called with arguments ARG
+   when the thread is canceled or calls pthread_exit.  ROUTINE will also
+   be called with arguments ARG when the matching pthread_cleanup_pop
+   is executed with non-zero EXECUTE argument.
+
+   pthread_cleanup_push and pthread_cleanup_pop are macros and must always
+   be used in matching pairs at the same nesting level of braces.  */
+#  define pthread_cleanup_push(routine, arg) \
+  do {									      \
+    struct __pthread_cleanup_frame __clframe				      \
+      __attribute__ ((__cleanup__ (__pthread_cleanup_routine)))		      \
+      = { .__cancel_routine = (routine), .__cancel_arg = (arg),	 	      \
+	  .__do_it = 1 };
+
+/* Remove a cleanup handler installed by the matching pthread_cleanup_push.
+   If EXECUTE is non-zero, the handler function is called. */
+#  define pthread_cleanup_pop(execute) \
+    __clframe.__do_it = (execute);					      \
+  } while (0)
+
+#  ifdef __USE_GNU
+/* Install a cleanup handler as pthread_cleanup_push does, but also
+   saves the current cancellation type and sets it to deferred
+   cancellation.  */
+#   define pthread_cleanup_push_defer_np(routine, arg) \
+  do {									      \
+    struct __pthread_cleanup_frame __clframe				      \
+      __attribute__ ((__cleanup__ (__pthread_cleanup_routine)))		      \
+      = { .__cancel_routine = (routine), .__cancel_arg = (arg),		      \
+	  .__do_it = 1 };						      \
+    (void) pthread_setcanceltype (PTHREAD_CANCEL_DEFERRED,		      \
+				  &__clframe.__cancel_type)
+
+/* Remove a cleanup handler as pthread_cleanup_pop does, but also
+   restores the cancellation type that was in effect when the matching
+   pthread_cleanup_push_defer was called.  */
+#   define pthread_cleanup_pop_restore_np(execute) \
+    (void) pthread_setcanceltype (__clframe.__cancel_type, NULL);	      \
+    __clframe.__do_it = (execute);					      \
+  } while (0)
+#  endif
+# endif
+#else
+/* Install a cleanup handler: ROUTINE will be called with arguments ARG
+   when the thread is canceled or calls pthread_exit.  ROUTINE will also
+   be called with arguments ARG when the matching pthread_cleanup_pop
+   is executed with non-zero EXECUTE argument.
+
+   pthread_cleanup_push and pthread_cleanup_pop are macros and must always
+   be used in matching pairs at the same nesting level of braces.  */
+# define pthread_cleanup_push(routine, arg) \
+  do {									      \
+    __pthread_unwind_buf_t __cancel_buf;				      \
+    void (*__cancel_routine) (void *) = (routine);			      \
+    void *__cancel_arg = (arg);						      \
+    int __not_first_call = __sigsetjmp ((struct __jmp_buf_tag *) (void *)     \
+					__cancel_buf.__cancel_jmp_buf, 0);    \
+    if (__glibc_unlikely (__not_first_call))				      \
+      {									      \
+	__cancel_routine (__cancel_arg);				      \
+	__pthread_unwind_next (&__cancel_buf);				      \
+	/* NOTREACHED */						      \
+      }									      \
+									      \
+    __pthread_register_cancel (&__cancel_buf);				      \
+    do {
+extern void __pthread_register_cancel (__pthread_unwind_buf_t *__buf)
+     __cleanup_fct_attribute;
+
+/* Remove a cleanup handler installed by the matching pthread_cleanup_push.
+   If EXECUTE is non-zero, the handler function is called. */
+# define pthread_cleanup_pop(execute) \
+      do { } while (0);/* Empty to allow label before pthread_cleanup_pop.  */\
+    } while (0);							      \
+    __pthread_unregister_cancel (&__cancel_buf);			      \
+    if (execute)							      \
+      __cancel_routine (__cancel_arg);					      \
+  } while (0)
+extern void __pthread_unregister_cancel (__pthread_unwind_buf_t *__buf)
+  __cleanup_fct_attribute;
+
+# ifdef __USE_GNU
+/* Install a cleanup handler as pthread_cleanup_push does, but also
+   saves the current cancellation type and sets it to deferred
+   cancellation.  */
+#  define pthread_cleanup_push_defer_np(routine, arg) \
+  do {									      \
+    __pthread_unwind_buf_t __cancel_buf;				      \
+    void (*__cancel_routine) (void *) = (routine);			      \
+    void *__cancel_arg = (arg);						      \
+    int __not_first_call = __sigsetjmp ((struct __jmp_buf_tag *) (void *)     \
+					__cancel_buf.__cancel_jmp_buf, 0);    \
+    if (__glibc_unlikely (__not_first_call))				      \
+      {									      \
+	__cancel_routine (__cancel_arg);				      \
+	__pthread_unwind_next (&__cancel_buf);				      \
+	/* NOTREACHED */						      \
+      }									      \
+									      \
+    __pthread_register_cancel_defer (&__cancel_buf);			      \
+    do {
+extern void __pthread_register_cancel_defer (__pthread_unwind_buf_t *__buf)
+     __cleanup_fct_attribute;
+
+/* Remove a cleanup handler as pthread_cleanup_pop does, but also
+   restores the cancellation type that was in effect when the matching
+   pthread_cleanup_push_defer was called.  */
+#  define pthread_cleanup_pop_restore_np(execute) \
+      do { } while (0);/* Empty to allow label before pthread_cleanup_pop.  */\
+    } while (0);							      \
+    __pthread_unregister_cancel_restore (&__cancel_buf);		      \
+    if (execute)							      \
+      __cancel_routine (__cancel_arg);					      \
+  } while (0)
+extern void __pthread_unregister_cancel_restore (__pthread_unwind_buf_t *__buf)
+  __cleanup_fct_attribute;
+# endif
+
+/* Internal interface to initiate cleanup.  */
+extern void __pthread_unwind_next (__pthread_unwind_buf_t *__buf)
+     __cleanup_fct_attribute __attribute__ ((__noreturn__))
+# ifndef SHARED
+     __attribute__ ((__weak__))
+# endif
+     ;
+#endif
+
+/* Function used in the macros.  */
+struct __jmp_buf_tag;
+extern int __sigsetjmp (struct __jmp_buf_tag *__env, int __savemask) __THROWNL;
+
+
+/* Mutex handling.  */
+
+/* Initialize a mutex.  */
+extern int pthread_mutex_init (pthread_mutex_t *__mutex,
+			       const pthread_mutexattr_t *__mutexattr)
+     __THROW __nonnull ((1));
+
+/* Destroy a mutex.  */
+extern int pthread_mutex_destroy (pthread_mutex_t *__mutex)
+     __THROW __nonnull ((1));
+
+/* Try locking a mutex.  */
+extern int pthread_mutex_trylock (pthread_mutex_t *__mutex)
+     __THROWNL __nonnull ((1));
+
+/* Lock a mutex.  */
+extern int pthread_mutex_lock (pthread_mutex_t *__mutex)
+     __THROWNL __nonnull ((1));
+
+#ifdef __USE_XOPEN2K
+/* Wait until lock becomes available, or specified time passes. */
+extern int pthread_mutex_timedlock (pthread_mutex_t *__restrict __mutex,
+				    const struct timespec *__restrict
+				    __abstime) __THROWNL __nonnull ((1, 2));
+#endif
+
+/* Unlock a mutex.  */
+extern int pthread_mutex_unlock (pthread_mutex_t *__mutex)
+     __THROWNL __nonnull ((1));
+
+
+/* Get the priority ceiling of MUTEX.  */
+extern int pthread_mutex_getprioceiling (const pthread_mutex_t *
+					 __restrict __mutex,
+					 int *__restrict __prioceiling)
+     __THROW __nonnull ((1, 2));
+
+/* Set the priority ceiling of MUTEX to PRIOCEILING, return old
+   priority ceiling value in *OLD_CEILING.  */
+extern int pthread_mutex_setprioceiling (pthread_mutex_t *__restrict __mutex,
+					 int __prioceiling,
+					 int *__restrict __old_ceiling)
+     __THROW __nonnull ((1, 3));
+
+
+#ifdef __USE_XOPEN2K8
+/* Declare the state protected by MUTEX as consistent.  */
+extern int pthread_mutex_consistent (pthread_mutex_t *__mutex)
+     __THROW __nonnull ((1));
+# ifdef __USE_GNU
+extern int pthread_mutex_consistent_np (pthread_mutex_t *__mutex)
+     __THROW __nonnull ((1));
+# endif
+#endif
+
+
+/* Functions for handling mutex attributes.  */
+
+/* Initialize mutex attribute object ATTR with default attributes
+   (kind is PTHREAD_MUTEX_TIMED_NP).  */
+extern int pthread_mutexattr_init (pthread_mutexattr_t *__attr)
+     __THROW __nonnull ((1));
+
+/* Destroy mutex attribute object ATTR.  */
+extern int pthread_mutexattr_destroy (pthread_mutexattr_t *__attr)
+     __THROW __nonnull ((1));
+
+/* Get the process-shared flag of the mutex attribute ATTR.  */
+extern int pthread_mutexattr_getpshared (const pthread_mutexattr_t *
+					 __restrict __attr,
+					 int *__restrict __pshared)
+     __THROW __nonnull ((1, 2));
+
+/* Set the process-shared flag of the mutex attribute ATTR.  */
+extern int pthread_mutexattr_setpshared (pthread_mutexattr_t *__attr,
+					 int __pshared)
+     __THROW __nonnull ((1));
+
+#if defined __USE_UNIX98 || defined __USE_XOPEN2K8
+/* Return in *KIND the mutex kind attribute in *ATTR.  */
+extern int pthread_mutexattr_gettype (const pthread_mutexattr_t *__restrict
+				      __attr, int *__restrict __kind)
+     __THROW __nonnull ((1, 2));
+
+/* Set the mutex kind attribute in *ATTR to KIND (either PTHREAD_MUTEX_NORMAL,
+   PTHREAD_MUTEX_RECURSIVE, PTHREAD_MUTEX_ERRORCHECK, or
+   PTHREAD_MUTEX_DEFAULT).  */
+extern int pthread_mutexattr_settype (pthread_mutexattr_t *__attr, int __kind)
+     __THROW __nonnull ((1));
+#endif
+
+/* Return in *PROTOCOL the mutex protocol attribute in *ATTR.  */
+extern int pthread_mutexattr_getprotocol (const pthread_mutexattr_t *
+					  __restrict __attr,
+					  int *__restrict __protocol)
+     __THROW __nonnull ((1, 2));
+
+/* Set the mutex protocol attribute in *ATTR to PROTOCOL (either
+   PTHREAD_PRIO_NONE, PTHREAD_PRIO_INHERIT, or PTHREAD_PRIO_PROTECT).  */
+extern int pthread_mutexattr_setprotocol (pthread_mutexattr_t *__attr,
+					  int __protocol)
+     __THROW __nonnull ((1));
+
+/* Return in *PRIOCEILING the mutex prioceiling attribute in *ATTR.  */
+extern int pthread_mutexattr_getprioceiling (const pthread_mutexattr_t *
+					     __restrict __attr,
+					     int *__restrict __prioceiling)
+     __THROW __nonnull ((1, 2));
+
+/* Set the mutex prioceiling attribute in *ATTR to PRIOCEILING.  */
+extern int pthread_mutexattr_setprioceiling (pthread_mutexattr_t *__attr,
+					     int __prioceiling)
+     __THROW __nonnull ((1));
+
+#ifdef __USE_XOPEN2K
+/* Get the robustness flag of the mutex attribute ATTR.  */
+extern int pthread_mutexattr_getrobust (const pthread_mutexattr_t *__attr,
+					int *__robustness)
+     __THROW __nonnull ((1, 2));
+# ifdef __USE_GNU
+extern int pthread_mutexattr_getrobust_np (const pthread_mutexattr_t *__attr,
+					   int *__robustness)
+     __THROW __nonnull ((1, 2));
+# endif
+
+/* Set the robustness flag of the mutex attribute ATTR.  */
+extern int pthread_mutexattr_setrobust (pthread_mutexattr_t *__attr,
+					int __robustness)
+     __THROW __nonnull ((1));
+# ifdef __USE_GNU
+extern int pthread_mutexattr_setrobust_np (pthread_mutexattr_t *__attr,
+					   int __robustness)
+     __THROW __nonnull ((1));
+# endif
+#endif
+
+
+#if defined __USE_UNIX98 || defined __USE_XOPEN2K
+/* Functions for handling read-write locks.  */
+
+/* Initialize read-write lock RWLOCK using attributes ATTR, or use
+   the default values if later is NULL.  */
+extern int pthread_rwlock_init (pthread_rwlock_t *__restrict __rwlock,
+				const pthread_rwlockattr_t *__restrict
+				__attr) __THROW __nonnull ((1));
+
+/* Destroy read-write lock RWLOCK.  */
+extern int pthread_rwlock_destroy (pthread_rwlock_t *__rwlock)
+     __THROW __nonnull ((1));
+
+/* Acquire read lock for RWLOCK.  */
+extern int pthread_rwlock_rdlock (pthread_rwlock_t *__rwlock)
+     __THROWNL __nonnull ((1));
+
+/* Try to acquire read lock for RWLOCK.  */
+extern int pthread_rwlock_tryrdlock (pthread_rwlock_t *__rwlock)
+  __THROWNL __nonnull ((1));
+
+# ifdef __USE_XOPEN2K
+/* Try to acquire read lock for RWLOCK or return after specfied time.  */
+extern int pthread_rwlock_timedrdlock (pthread_rwlock_t *__restrict __rwlock,
+				       const struct timespec *__restrict
+				       __abstime) __THROWNL __nonnull ((1, 2));
+# endif
+
+/* Acquire write lock for RWLOCK.  */
+extern int pthread_rwlock_wrlock (pthread_rwlock_t *__rwlock)
+     __THROWNL __nonnull ((1));
+
+/* Try to acquire write lock for RWLOCK.  */
+extern int pthread_rwlock_trywrlock (pthread_rwlock_t *__rwlock)
+     __THROWNL __nonnull ((1));
+
+# ifdef __USE_XOPEN2K
+/* Try to acquire write lock for RWLOCK or return after specfied time.  */
+extern int pthread_rwlock_timedwrlock (pthread_rwlock_t *__restrict __rwlock,
+				       const struct timespec *__restrict
+				       __abstime) __THROWNL __nonnull ((1, 2));
+# endif
+
+/* Unlock RWLOCK.  */
+extern int pthread_rwlock_unlock (pthread_rwlock_t *__rwlock)
+     __THROWNL __nonnull ((1));
+
+
+/* Functions for handling read-write lock attributes.  */
+
+/* Initialize attribute object ATTR with default values.  */
+extern int pthread_rwlockattr_init (pthread_rwlockattr_t *__attr)
+     __THROW __nonnull ((1));
+
+/* Destroy attribute object ATTR.  */
+extern int pthread_rwlockattr_destroy (pthread_rwlockattr_t *__attr)
+     __THROW __nonnull ((1));
+
+/* Return current setting of process-shared attribute of ATTR in PSHARED.  */
+extern int pthread_rwlockattr_getpshared (const pthread_rwlockattr_t *
+					  __restrict __attr,
+					  int *__restrict __pshared)
+     __THROW __nonnull ((1, 2));
+
+/* Set process-shared attribute of ATTR to PSHARED.  */
+extern int pthread_rwlockattr_setpshared (pthread_rwlockattr_t *__attr,
+					  int __pshared)
+     __THROW __nonnull ((1));
+
+/* Return current setting of reader/writer preference.  */
+extern int pthread_rwlockattr_getkind_np (const pthread_rwlockattr_t *
+					  __restrict __attr,
+					  int *__restrict __pref)
+     __THROW __nonnull ((1, 2));
+
+/* Set reader/write preference.  */
+extern int pthread_rwlockattr_setkind_np (pthread_rwlockattr_t *__attr,
+					  int __pref) __THROW __nonnull ((1));
+#endif
+
+
+/* Functions for handling conditional variables.  */
+
+/* Initialize condition variable COND using attributes ATTR, or use
+   the default values if later is NULL.  */
+extern int pthread_cond_init (pthread_cond_t *__restrict __cond,
+			      const pthread_condattr_t *__restrict __cond_attr)
+     __THROW __nonnull ((1));
+
+/* Destroy condition variable COND.  */
+extern int pthread_cond_destroy (pthread_cond_t *__cond)
+     __THROW __nonnull ((1));
+
+/* Wake up one thread waiting for condition variable COND.  */
+extern int pthread_cond_signal (pthread_cond_t *__cond)
+     __THROWNL __nonnull ((1));
+
+/* Wake up all threads waiting for condition variables COND.  */
+extern int pthread_cond_broadcast (pthread_cond_t *__cond)
+     __THROWNL __nonnull ((1));
+
+/* Wait for condition variable COND to be signaled or broadcast.
+   MUTEX is assumed to be locked before.
+
+   This function is a cancellation point and therefore not marked with
+   __THROW.  */
+extern int pthread_cond_wait (pthread_cond_t *__restrict __cond,
+			      pthread_mutex_t *__restrict __mutex)
+     __nonnull ((1, 2));
+
+/* Wait for condition variable COND to be signaled or broadcast until
+   ABSTIME.  MUTEX is assumed to be locked before.  ABSTIME is an
+   absolute time specification; zero is the beginning of the epoch
+   (00:00:00 GMT, January 1, 1970).
+
+   This function is a cancellation point and therefore not marked with
+   __THROW.  */
+extern int pthread_cond_timedwait (pthread_cond_t *__restrict __cond,
+				   pthread_mutex_t *__restrict __mutex,
+				   const struct timespec *__restrict __abstime)
+     __nonnull ((1, 2, 3));
+
+/* Functions for handling condition variable attributes.  */
+
+/* Initialize condition variable attribute ATTR.  */
+extern int pthread_condattr_init (pthread_condattr_t *__attr)
+     __THROW __nonnull ((1));
+
+/* Destroy condition variable attribute ATTR.  */
+extern int pthread_condattr_destroy (pthread_condattr_t *__attr)
+     __THROW __nonnull ((1));
+
+/* Get the process-shared flag of the condition variable attribute ATTR.  */
+extern int pthread_condattr_getpshared (const pthread_condattr_t *
+					__restrict __attr,
+					int *__restrict __pshared)
+     __THROW __nonnull ((1, 2));
+
+/* Set the process-shared flag of the condition variable attribute ATTR.  */
+extern int pthread_condattr_setpshared (pthread_condattr_t *__attr,
+					int __pshared) __THROW __nonnull ((1));
+
+#ifdef __USE_XOPEN2K
+/* Get the clock selected for the condition variable attribute ATTR.  */
+extern int pthread_condattr_getclock (const pthread_condattr_t *
+				      __restrict __attr,
+				      __clockid_t *__restrict __clock_id)
+     __THROW __nonnull ((1, 2));
+
+/* Set the clock selected for the condition variable attribute ATTR.  */
+extern int pthread_condattr_setclock (pthread_condattr_t *__attr,
+				      __clockid_t __clock_id)
+     __THROW __nonnull ((1));
+#endif
+
+
+#ifdef __USE_XOPEN2K
+/* Functions to handle spinlocks.  */
+
+/* Initialize the spinlock LOCK.  If PSHARED is nonzero the spinlock can
+   be shared between different processes.  */
+extern int pthread_spin_init (pthread_spinlock_t *__lock, int __pshared)
+     __THROW __nonnull ((1));
+
+/* Destroy the spinlock LOCK.  */
+extern int pthread_spin_destroy (pthread_spinlock_t *__lock)
+     __THROW __nonnull ((1));
+
+/* Wait until spinlock LOCK is retrieved.  */
+extern int pthread_spin_lock (pthread_spinlock_t *__lock)
+     __THROWNL __nonnull ((1));
+
+/* Try to lock spinlock LOCK.  */
+extern int pthread_spin_trylock (pthread_spinlock_t *__lock)
+     __THROWNL __nonnull ((1));
+
+/* Release spinlock LOCK.  */
+extern int pthread_spin_unlock (pthread_spinlock_t *__lock)
+     __THROWNL __nonnull ((1));
+
+
+/* Functions to handle barriers.  */
+
+/* Initialize BARRIER with the attributes in ATTR.  The barrier is
+   opened when COUNT waiters arrived.  */
+extern int pthread_barrier_init (pthread_barrier_t *__restrict __barrier,
+				 const pthread_barrierattr_t *__restrict
+				 __attr, unsigned int __count)
+     __THROW __nonnull ((1));
+
+/* Destroy a previously dynamically initialized barrier BARRIER.  */
+extern int pthread_barrier_destroy (pthread_barrier_t *__barrier)
+     __THROW __nonnull ((1));
+
+/* Wait on barrier BARRIER.  */
+extern int pthread_barrier_wait (pthread_barrier_t *__barrier)
+     __THROWNL __nonnull ((1));
+
+
+/* Initialize barrier attribute ATTR.  */
+extern int pthread_barrierattr_init (pthread_barrierattr_t *__attr)
+     __THROW __nonnull ((1));
+
+/* Destroy previously dynamically initialized barrier attribute ATTR.  */
+extern int pthread_barrierattr_destroy (pthread_barrierattr_t *__attr)
+     __THROW __nonnull ((1));
+
+/* Get the process-shared flag of the barrier attribute ATTR.  */
+extern int pthread_barrierattr_getpshared (const pthread_barrierattr_t *
+					   __restrict __attr,
+					   int *__restrict __pshared)
+     __THROW __nonnull ((1, 2));
+
+/* Set the process-shared flag of the barrier attribute ATTR.  */
+extern int pthread_barrierattr_setpshared (pthread_barrierattr_t *__attr,
+					   int __pshared)
+     __THROW __nonnull ((1));
+#endif
+
+
+/* Functions for handling thread-specific data.  */
+
+/* Create a key value identifying a location in the thread-specific
+   data area.  Each thread maintains a distinct thread-specific data
+   area.  DESTR_FUNCTION, if non-NULL, is called with the value
+   associated to that key when the key is destroyed.
+   DESTR_FUNCTION is not called if the value associated is NULL when
+   the key is destroyed.  */
+extern int pthread_key_create (pthread_key_t *__key,
+			       void (*__destr_function) (void *))
+     __THROW __nonnull ((1));
+
+/* Destroy KEY.  */
+extern int pthread_key_delete (pthread_key_t __key) __THROW;
+
+/* Return current value of the thread-specific data slot identified by KEY.  */
+extern void *pthread_getspecific (pthread_key_t __key) __THROW;
+
+/* Store POINTER in the thread-specific data slot identified by KEY. */
+extern int pthread_setspecific (pthread_key_t __key,
+				const void *__pointer) __THROW ;
+
+
+#ifdef __USE_XOPEN2K
+/* Get ID of CPU-time clock for thread THREAD_ID.  */
+extern int pthread_getcpuclockid (pthread_t __thread_id,
+				  __clockid_t *__clock_id)
+     __THROW __nonnull ((2));
+#endif
+
+
+/* Install handlers to be called when a new process is created with FORK.
+   The PREPARE handler is called in the parent process just before performing
+   FORK. The PARENT handler is called in the parent process just after FORK.
+   The CHILD handler is called in the child process.  Each of the three
+   handlers can be NULL, meaning that no handler needs to be called at that
+   point.
+   PTHREAD_ATFORK can be called several times, in which case the PREPARE
+   handlers are called in LIFO order (last added with PTHREAD_ATFORK,
+   first called before FORK), and the PARENT and CHILD handlers are called
+   in FIFO (first added, first called).  */
+
+extern int pthread_atfork (void (*__prepare) (void),
+			   void (*__parent) (void),
+			   void (*__child) (void)) __THROW;
+
+
+#ifdef __USE_EXTERN_INLINES
+/* Optimizations.  */
+__extern_inline int
+__NTH (pthread_equal (pthread_t __thread1, pthread_t __thread2))
+{
+  return __thread1 == __thread2;
+}
+#endif
+
+__END_DECLS
+
+#endif	/* pthread.h */
diff --git a/sysdeps/nptl/setxid.h b/sysdeps/nptl/setxid.h
new file mode 100644
index 0000000..76c88e0
--- /dev/null
+++ b/sysdeps/nptl/setxid.h
@@ -0,0 +1,62 @@
+/* Copyright (C) 2004-2014 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/>.  */
+
+#include <pthreadP.h>
+#include <sysdep.h>
+
+#define __SETXID_1(cmd, arg1) \
+  cmd.id[0] = (long int) arg1
+#define __SETXID_2(cmd, arg1, arg2) \
+  __SETXID_1 (cmd, arg1); cmd.id[1] = (long int) arg2
+#define __SETXID_3(cmd, arg1, arg2, arg3) \
+  __SETXID_2 (cmd, arg1, arg2); cmd.id[2] = (long int) arg3
+
+#ifdef SINGLE_THREAD
+# define INLINE_SETXID_SYSCALL(name, nr, args...) \
+  INLINE_SYSCALL (name, nr, args)
+#elif defined SHARED
+# define INLINE_SETXID_SYSCALL(name, nr, args...) \
+  ({									\
+    int __result;							\
+    if (__builtin_expect (__libc_pthread_functions_init, 0))		\
+      {									\
+	struct xid_command __cmd;					\
+	__cmd.syscall_no = __NR_##name;					\
+	__SETXID_##nr (__cmd, args);					\
+	__result = PTHFCT_CALL (ptr__nptl_setxid, (&__cmd));		\
+	}								\
+    else								\
+      __result = INLINE_SYSCALL (name, nr, args);			\
+    __result;								\
+   })
+#else
+# define INLINE_SETXID_SYSCALL(name, nr, args...) \
+  ({									\
+    extern __typeof (__nptl_setxid) __nptl_setxid __attribute__((weak));\
+    int __result;							\
+    if (__glibc_unlikely (__nptl_setxid	!= NULL))			      \
+      {									\
+	struct xid_command __cmd;					\
+	__cmd.syscall_no = __NR_##name;					\
+	__SETXID_##nr (__cmd, args);					\
+	__result =__nptl_setxid (&__cmd);				\
+      }									\
+    else								\
+      __result = INLINE_SYSCALL (name, nr, args);			\
+    __result;								\
+   })
+#endif
diff --git a/sysdeps/nptl/sigfillset.c b/sysdeps/nptl/sigfillset.c
new file mode 100644
index 0000000..9ab12c7
--- /dev/null
+++ b/sysdeps/nptl/sigfillset.c
@@ -0,0 +1,20 @@
+/* Copyright (C) 2003-2014 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/>.  */
+
+#include <nptl/pthreadP.h>
+
+#include <signal/sigfillset.c>
diff --git a/sysdeps/nptl/tcb-offsets.h b/sysdeps/nptl/tcb-offsets.h
new file mode 100644
index 0000000..3fe1370
--- /dev/null
+++ b/sysdeps/nptl/tcb-offsets.h
@@ -0,0 +1 @@
+/* This is overridden by generated tcb-offsets.h on arches which need it.  */
diff --git a/sysdeps/nptl/tst-mqueue8x.c b/sysdeps/nptl/tst-mqueue8x.c
new file mode 100644
index 0000000..ca28039
--- /dev/null
+++ b/sysdeps/nptl/tst-mqueue8x.c
@@ -0,0 +1 @@
+#include <rt/tst-mqueue8.c>
diff --git a/sysdeps/nptl/unwind-forcedunwind.c b/sysdeps/nptl/unwind-forcedunwind.c
new file mode 100644
index 0000000..9d7bdc5
--- /dev/null
+++ b/sysdeps/nptl/unwind-forcedunwind.c
@@ -0,0 +1,151 @@
+/* Copyright (C) 2003-2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Jakub Jelinek <jakub@redhat.com>.
+
+   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; see the file COPYING.LIB.  If
+   not, see <http://www.gnu.org/licenses/>.  */
+
+#include <dlfcn.h>
+#include <stdio.h>
+#include <unwind.h>
+#include <pthreadP.h>
+#include <sysdep.h>
+#include <gnu/lib-names.h>
+
+static void *libgcc_s_handle;
+static void (*libgcc_s_resume) (struct _Unwind_Exception *exc);
+static _Unwind_Reason_Code (*libgcc_s_personality)
+  (int, _Unwind_Action, _Unwind_Exception_Class, struct _Unwind_Exception *,
+   struct _Unwind_Context *);
+static _Unwind_Reason_Code (*libgcc_s_forcedunwind)
+  (struct _Unwind_Exception *, _Unwind_Stop_Fn, void *);
+static _Unwind_Word (*libgcc_s_getcfa) (struct _Unwind_Context *);
+
+void
+__attribute_noinline__
+pthread_cancel_init (void)
+{
+  void *resume;
+  void *personality;
+  void *forcedunwind;
+  void *getcfa;
+  void *handle;
+
+  if (__glibc_likely (libgcc_s_handle != NULL))
+    {
+      /* Force gcc to reload all values.  */
+      asm volatile ("" ::: "memory");
+      return;
+    }
+
+  handle = __libc_dlopen (LIBGCC_S_SO);
+
+  if (handle == NULL
+      || (resume = __libc_dlsym (handle, "_Unwind_Resume")) == NULL
+      || (personality = __libc_dlsym (handle, "__gcc_personality_v0")) == NULL
+      || (forcedunwind = __libc_dlsym (handle, "_Unwind_ForcedUnwind"))
+	 == NULL
+      || (getcfa = __libc_dlsym (handle, "_Unwind_GetCFA")) == NULL
+#ifdef ARCH_CANCEL_INIT
+      || ARCH_CANCEL_INIT (handle)
+#endif
+      )
+    __libc_fatal (LIBGCC_S_SO " must be installed for pthread_cancel to work\n");
+
+  PTR_MANGLE (resume);
+  libgcc_s_resume = resume;
+  PTR_MANGLE (personality);
+  libgcc_s_personality = personality;
+  PTR_MANGLE (forcedunwind);
+  libgcc_s_forcedunwind = forcedunwind;
+  PTR_MANGLE (getcfa);
+  libgcc_s_getcfa = getcfa;
+  /* Make sure libgcc_s_handle is written last.  Otherwise,
+     pthread_cancel_init might return early even when the pointer the
+     caller is interested in is not initialized yet.  */
+  atomic_write_barrier ();
+  libgcc_s_handle = handle;
+}
+
+void
+__libc_freeres_fn_section
+__unwind_freeres (void)
+{
+  void *handle = libgcc_s_handle;
+  if (handle != NULL)
+    {
+      libgcc_s_handle = NULL;
+      __libc_dlclose (handle);
+    }
+}
+
+void
+_Unwind_Resume (struct _Unwind_Exception *exc)
+{
+  if (__glibc_unlikely (libgcc_s_handle == NULL))
+    pthread_cancel_init ();
+  else
+    atomic_read_barrier ();
+
+  void (*resume) (struct _Unwind_Exception *exc) = libgcc_s_resume;
+  PTR_DEMANGLE (resume);
+  resume (exc);
+}
+
+_Unwind_Reason_Code
+__gcc_personality_v0 (int version, _Unwind_Action actions,
+		      _Unwind_Exception_Class exception_class,
+		      struct _Unwind_Exception *ue_header,
+		      struct _Unwind_Context *context)
+{
+  if (__glibc_unlikely (libgcc_s_handle == NULL))
+    pthread_cancel_init ();
+  else
+    atomic_read_barrier ();
+
+  _Unwind_Reason_Code (*personality)
+    (int, _Unwind_Action, _Unwind_Exception_Class, struct _Unwind_Exception *,
+     struct _Unwind_Context *) = libgcc_s_personality;
+  PTR_DEMANGLE (personality);
+  return personality (version, actions, exception_class, ue_header, context);
+}
+
+_Unwind_Reason_Code
+_Unwind_ForcedUnwind (struct _Unwind_Exception *exc, _Unwind_Stop_Fn stop,
+		      void *stop_argument)
+{
+  if (__glibc_unlikely (libgcc_s_handle == NULL))
+    pthread_cancel_init ();
+  else
+    atomic_read_barrier ();
+
+  _Unwind_Reason_Code (*forcedunwind)
+    (struct _Unwind_Exception *, _Unwind_Stop_Fn, void *)
+    = libgcc_s_forcedunwind;
+  PTR_DEMANGLE (forcedunwind);
+  return forcedunwind (exc, stop, stop_argument);
+}
+
+_Unwind_Word
+_Unwind_GetCFA (struct _Unwind_Context *context)
+{
+  if (__glibc_unlikely (libgcc_s_handle == NULL))
+    pthread_cancel_init ();
+  else
+    atomic_read_barrier ();
+
+  _Unwind_Word (*getcfa) (struct _Unwind_Context *) = libgcc_s_getcfa;
+  PTR_DEMANGLE (getcfa);
+  return getcfa (context);
+}
diff --git a/sysdeps/pthread/Makefile b/sysdeps/pthread/Makefile
new file mode 100644
index 0000000..1080dc9
--- /dev/null
+++ b/sysdeps/pthread/Makefile
@@ -0,0 +1,23 @@
+# sysdeps makefile fragment for all pthread-supporting configurations.
+# Copyright (C) 2014 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/>.
+
+ifeq (yes,$(build-shared))
+$(objpfx)tst-timer: $(objpfx)librt.so $(shared-thread-library)
+else
+$(objpfx)tst-timer: $(objpfx)librt.a $(static-thread-library)
+endif
diff --git a/sysdeps/pthread/allocalim.h b/sysdeps/pthread/allocalim.h
new file mode 100644
index 0000000..407d400
--- /dev/null
+++ b/sysdeps/pthread/allocalim.h
@@ -0,0 +1,29 @@
+/* Determine whether block of given size can be allocated on the stack or not.
+   Copyright (C) 2002-2014 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; see the file COPYING.LIB.  If
+   not, see <http://www.gnu.org/licenses/>.  */
+
+#include <alloca.h>
+#include <limits.h>
+
+
+extern __always_inline
+int
+__libc_use_alloca (size_t size)
+{
+  return (__builtin_expect (size <= PTHREAD_STACK_MIN / 4, 1)
+	  || __builtin_expect (__libc_alloca_cutoff (size), 1));
+}
diff --git a/sysdeps/pthread/bits/sigthread.h b/sysdeps/pthread/bits/sigthread.h
new file mode 100644
index 0000000..0048d7f
--- /dev/null
+++ b/sysdeps/pthread/bits/sigthread.h
@@ -0,0 +1,43 @@
+/* Signal handling function for threaded programs.
+   Copyright (C) 1998-2014 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; see the file COPYING.LIB.  If
+   not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef _BITS_SIGTHREAD_H
+#define _BITS_SIGTHREAD_H	1
+
+#if !defined _SIGNAL_H && !defined _PTHREAD_H
+# error "Never include this file directly.  Use <pthread.h> instead"
+#endif
+
+/* Functions for handling signals. */
+
+/* Modify the signal mask for the calling thread.  The arguments have
+   the same meaning as for sigprocmask(2). */
+extern int pthread_sigmask (int __how,
+			    const __sigset_t *__restrict __newmask,
+			    __sigset_t *__restrict __oldmask)__THROW;
+
+/* Send signal SIGNO to the given thread. */
+extern int pthread_kill (pthread_t __threadid, int __signo) __THROW;
+
+#ifdef __USE_GNU
+/* Queue signal and data to a thread.  */
+extern int pthread_sigqueue (pthread_t __threadid, int __signo,
+			     const union sigval __value) __THROW;
+#endif
+
+#endif	/* bits/sigthread.h */
diff --git a/sysdeps/pthread/flockfile.c b/sysdeps/pthread/flockfile.c
new file mode 100644
index 0000000..da26824
--- /dev/null
+++ b/sysdeps/pthread/flockfile.c
@@ -0,0 +1,32 @@
+/* Copyright (C) 2002-2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
+
+   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/>.  */
+
+#include <pthread.h>
+#include <stdio.h>
+#include <libio.h>
+#include <bits/stdio-lock.h>
+
+
+void
+__flockfile (stream)
+     FILE *stream;
+{
+  _IO_lock_lock (*stream->_lock);
+}
+strong_alias (__flockfile, _IO_flockfile)
+weak_alias (__flockfile, flockfile)
diff --git a/sysdeps/pthread/ftrylockfile.c b/sysdeps/pthread/ftrylockfile.c
new file mode 100644
index 0000000..7921d60
--- /dev/null
+++ b/sysdeps/pthread/ftrylockfile.c
@@ -0,0 +1,32 @@
+/* Copyright (C) 2002-2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
+
+   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/>.  */
+
+#include <errno.h>
+#include <pthread.h>
+#include <stdio.h>
+#include <bits/stdio-lock.h>
+
+
+int
+__ftrylockfile (stream)
+     FILE *stream;
+{
+  return _IO_lock_trylock (*stream->_lock);
+}
+strong_alias (__ftrylockfile, _IO_ftrylockfile)
+weak_alias (__ftrylockfile, ftrylockfile)
diff --git a/sysdeps/pthread/funlockfile.c b/sysdeps/pthread/funlockfile.c
new file mode 100644
index 0000000..2b367db
--- /dev/null
+++ b/sysdeps/pthread/funlockfile.c
@@ -0,0 +1,32 @@
+/* Copyright (C) 2002-2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
+
+   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/>.  */
+
+#include <pthread.h>
+#include <stdio.h>
+#include <libio.h>
+#include <bits/stdio-lock.h>
+
+
+void
+__funlockfile (stream)
+     FILE *stream;
+{
+  _IO_lock_unlock (*stream->_lock);
+}
+strong_alias (__funlockfile, _IO_funlockfile)
+weak_alias (__funlockfile, funlockfile)
diff --git a/sysdeps/pthread/posix-timer.h b/sysdeps/pthread/posix-timer.h
new file mode 100644
index 0000000..1076110
--- /dev/null
+++ b/sysdeps/pthread/posix-timer.h
@@ -0,0 +1,196 @@
+/* Definitions for POSIX timer implementation on top of NPTL.
+   Copyright (C) 2000-2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Kaz Kylheku <kaz@ashi.footprints.net>.
+
+   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; see the file COPYING.LIB.  If
+   not, see <http://www.gnu.org/licenses/>.  */
+
+#include <limits.h>
+#include <signal.h>
+
+/* Double linked list.  */
+struct list_links
+{
+  struct list_links *next;
+  struct list_links *prev;
+};
+
+
+/* Forward declaration.  */
+struct timer_node;
+
+
+/* Definitions for an internal thread of the POSIX timer implementation.  */
+struct thread_node
+{
+  struct list_links links;
+  pthread_attr_t attr;
+  pthread_t id;
+  unsigned int exists;
+  struct list_links timer_queue;
+  pthread_cond_t cond;
+  struct timer_node *current_timer;
+  pthread_t captured;
+  clockid_t clock_id;
+};
+
+
+/* Internal representation of a timer.  */
+struct timer_node
+{
+  struct list_links links;
+  struct sigevent event;
+  clockid_t clock;
+  struct itimerspec value;
+  struct timespec expirytime;
+  pthread_attr_t attr;
+  unsigned int abstime;
+  unsigned int armed;
+  enum {
+    TIMER_FREE, TIMER_INUSE, TIMER_DELETED
+  } inuse;
+  struct thread_node *thread;
+  pid_t creator_pid;
+  int refcount;
+  int overrun_count;
+};
+
+
+/* The limit is not published if we are compiled with kernel timer support.
+   But we still compiled in this implementation with its limit unless built
+   to require the kernel support.  */
+#ifndef TIMER_MAX
+# define TIMER_MAX 256
+#endif
+
+/* Static array with the structures for all the timers.  */
+extern struct timer_node __timer_array[TIMER_MAX];
+
+/* Global lock to protect operation on the lists.  */
+extern pthread_mutex_t __timer_mutex;
+
+/* Variable to protext initialization.  */
+extern pthread_once_t __timer_init_once_control;
+
+/* Nonzero if initialization of timer implementation failed.  */
+extern int __timer_init_failed;
+
+/* Node for the thread used to deliver signals.  */
+extern struct thread_node __timer_signal_thread_rclk;
+
+
+/* Return pointer to timer structure corresponding to ID.  */
+#define timer_id2ptr(timerid) ((struct timer_node *) timerid)
+#define timer_ptr2id(timerid) ((void *) timerid)
+
+/* Check whether timer is valid; global mutex must be held. */
+static inline int
+timer_valid (struct timer_node *timer)
+{
+  return timer && timer->inuse == TIMER_INUSE;
+}
+
+/* Timer refcount functions; need global mutex. */
+extern void __timer_dealloc (struct timer_node *timer);
+
+static inline void
+timer_addref (struct timer_node *timer)
+{
+  timer->refcount++;
+}
+
+static inline void
+timer_delref (struct timer_node *timer)
+{
+  if (--timer->refcount == 0)
+    __timer_dealloc (timer);
+}
+
+/* Timespec helper routines.  */
+static inline int
+__attribute ((always_inline))
+timespec_compare (const struct timespec *left, const struct timespec *right)
+{
+  if (left->tv_sec < right->tv_sec)
+    return -1;
+  if (left->tv_sec > right->tv_sec)
+    return 1;
+
+  if (left->tv_nsec < right->tv_nsec)
+    return -1;
+  if (left->tv_nsec > right->tv_nsec)
+    return 1;
+
+  return 0;
+}
+
+static inline void
+timespec_add (struct timespec *sum, const struct timespec *left,
+	      const struct timespec *right)
+{
+  sum->tv_sec = left->tv_sec + right->tv_sec;
+  sum->tv_nsec = left->tv_nsec + right->tv_nsec;
+
+  if (sum->tv_nsec >= 1000000000)
+    {
+      ++sum->tv_sec;
+      sum->tv_nsec -= 1000000000;
+    }
+}
+
+static inline void
+timespec_sub (struct timespec *diff, const struct timespec *left,
+	      const struct timespec *right)
+{
+  diff->tv_sec = left->tv_sec - right->tv_sec;
+  diff->tv_nsec = left->tv_nsec - right->tv_nsec;
+
+  if (diff->tv_nsec < 0)
+    {
+      --diff->tv_sec;
+      diff->tv_nsec += 1000000000;
+    }
+}
+
+
+/* We need one of the list functions in the other modules.  */
+static inline void
+list_unlink_ip (struct list_links *list)
+{
+  struct list_links *lnext = list->next, *lprev = list->prev;
+
+  lnext->prev = lprev;
+  lprev->next = lnext;
+
+  /* The suffix ip means idempotent; list_unlink_ip can be called
+   * two or more times on the same node.
+   */
+
+  list->next = list;
+  list->prev = list;
+}
+
+
+/* Functions in the helper file.  */
+extern void __timer_mutex_cancel_handler (void *arg);
+extern void __timer_init_once (void);
+extern struct timer_node *__timer_alloc (void);
+extern int __timer_thread_start (struct thread_node *thread);
+extern struct thread_node *__timer_thread_find_matching (const pthread_attr_t *desired_attr, clockid_t);
+extern struct thread_node *__timer_thread_alloc (const pthread_attr_t *desired_attr, clockid_t);
+extern void __timer_thread_dealloc (struct thread_node *thread);
+extern int __timer_thread_queue_timer (struct thread_node *thread,
+				       struct timer_node *insert);
+extern void __timer_thread_wakeup (struct thread_node *thread);
diff --git a/sysdeps/pthread/timer_create.c b/sysdeps/pthread/timer_create.c
new file mode 100644
index 0000000..461d28e
--- /dev/null
+++ b/sysdeps/pthread/timer_create.c
@@ -0,0 +1,169 @@
+/* Copyright (C) 2000-2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Kaz Kylheku <kaz@ashi.footprints.net>.
+
+   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; see the file COPYING.LIB.  If
+   not, see <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <signal.h>
+#include <pthread.h>
+#include <time.h>
+#include <unistd.h>
+
+#include "posix-timer.h"
+
+
+/* Create new per-process timer using CLOCK.  */
+int
+timer_create (clock_id, evp, timerid)
+     clockid_t clock_id;
+     struct sigevent *evp;
+     timer_t *timerid;
+{
+  int retval = -1;
+  struct timer_node *newtimer = NULL;
+  struct thread_node *thread = NULL;
+
+  if (0
+#if defined _POSIX_CPUTIME && _POSIX_CPUTIME >= 0
+      || clock_id == CLOCK_PROCESS_CPUTIME_ID
+#endif
+#if defined _POSIX_THREAD_CPUTIME && _POSIX_THREAD_CPUTIME >= 0
+      || clock_id == CLOCK_THREAD_CPUTIME_ID
+#endif
+      )
+    {
+      /* We don't allow timers for CPU clocks.  At least not in the
+	 moment.  */
+      __set_errno (ENOTSUP);
+      return -1;
+    }
+
+  if (clock_id != CLOCK_REALTIME)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  pthread_once (&__timer_init_once_control, __timer_init_once);
+
+  if (__timer_init_failed)
+    {
+      __set_errno (ENOMEM);
+      return -1;
+    }
+
+  pthread_mutex_lock (&__timer_mutex);
+
+  newtimer = __timer_alloc ();
+  if (__glibc_unlikely (newtimer == NULL))
+    {
+      __set_errno (EAGAIN);
+      goto unlock_bail;
+    }
+
+  if (evp != NULL)
+    newtimer->event = *evp;
+  else
+    {
+      newtimer->event.sigev_notify = SIGEV_SIGNAL;
+      newtimer->event.sigev_signo = SIGALRM;
+      newtimer->event.sigev_value.sival_ptr = timer_ptr2id (newtimer);
+      newtimer->event.sigev_notify_function = 0;
+    }
+
+  newtimer->event.sigev_notify_attributes = &newtimer->attr;
+  newtimer->creator_pid = getpid ();
+
+  switch (__builtin_expect (newtimer->event.sigev_notify, SIGEV_SIGNAL))
+    {
+    case SIGEV_NONE:
+    case SIGEV_SIGNAL:
+      /* We have a global thread for delivering timed signals.
+	 If it is not running, try to start it up.  */
+      thread = &__timer_signal_thread_rclk;
+      if (! thread->exists)
+	{
+	  if (__builtin_expect (__timer_thread_start (thread),
+				1) < 0)
+	    {
+	      __set_errno (EAGAIN);
+	      goto unlock_bail;
+            }
+        }
+      break;
+
+    case SIGEV_THREAD:
+      /* Copy over thread attributes or set up default ones.  */
+      if (evp->sigev_notify_attributes)
+	newtimer->attr = *(pthread_attr_t *) evp->sigev_notify_attributes;
+      else
+	pthread_attr_init (&newtimer->attr);
+
+      /* Ensure thread attributes call for deatched thread.  */
+      pthread_attr_setdetachstate (&newtimer->attr, PTHREAD_CREATE_DETACHED);
+
+      /* Try to find existing thread having the right attributes.  */
+      thread = __timer_thread_find_matching (&newtimer->attr, clock_id);
+
+      /* If no existing thread has these attributes, try to allocate one.  */
+      if (thread == NULL)
+	thread = __timer_thread_alloc (&newtimer->attr, clock_id);
+
+      /* Out of luck; no threads are available.  */
+      if (__glibc_unlikely (thread == NULL))
+	{
+	  __set_errno (EAGAIN);
+	  goto unlock_bail;
+	}
+
+      /* If the thread is not running already, try to start it.  */
+      if (! thread->exists
+	  && __builtin_expect (! __timer_thread_start (thread), 0))
+	{
+	  __set_errno (EAGAIN);
+	  goto unlock_bail;
+	}
+      break;
+
+    default:
+      __set_errno (EINVAL);
+      goto unlock_bail;
+    }
+
+  newtimer->clock = clock_id;
+  newtimer->abstime = 0;
+  newtimer->armed = 0;
+  newtimer->thread = thread;
+
+  *timerid = timer_ptr2id (newtimer);
+  retval = 0;
+
+  if (__builtin_expect (retval, 0) == -1)
+    {
+    unlock_bail:
+      if (thread != NULL)
+	__timer_thread_dealloc (thread);
+      if (newtimer != NULL)
+	{
+	  timer_delref (newtimer);
+	  __timer_dealloc (newtimer);
+	}
+    }
+
+  pthread_mutex_unlock (&__timer_mutex);
+
+  return retval;
+}
diff --git a/sysdeps/pthread/timer_delete.c b/sysdeps/pthread/timer_delete.c
new file mode 100644
index 0000000..99e4cc1
--- /dev/null
+++ b/sysdeps/pthread/timer_delete.c
@@ -0,0 +1,69 @@
+/* Copyright (C) 2000-2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Kaz Kylheku <kaz@ashi.footprints.net>.
+
+   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; see the file COPYING.LIB.  If
+   not, see <http://www.gnu.org/licenses/>.  */
+
+#include <assert.h>
+#include <errno.h>
+#include <pthread.h>
+#include <time.h>
+
+#include "posix-timer.h"
+
+
+/* Delete timer TIMERID.  */
+int
+timer_delete (timerid)
+     timer_t timerid;
+{
+  struct timer_node *timer;
+  int retval = -1;
+
+  pthread_mutex_lock (&__timer_mutex);
+
+  timer = timer_id2ptr (timerid);
+  if (! timer_valid (timer))
+    /* Invalid timer ID or the timer is not in use.  */
+    __set_errno (EINVAL);
+  else
+    {
+      if (timer->armed && timer->thread != NULL)
+	{
+	  struct thread_node *thread = timer->thread;
+	  assert (thread != NULL);
+
+	  /* If thread is cancelled while waiting for handler to terminate,
+	     the mutex is unlocked and timer_delete is aborted.  */
+	  pthread_cleanup_push (__timer_mutex_cancel_handler, &__timer_mutex);
+
+	  /* If timer is currently being serviced, wait for it to finish.  */
+	  while (thread->current_timer == timer)
+	    pthread_cond_wait (&thread->cond, &__timer_mutex);
+
+	  pthread_cleanup_pop (0);
+        }
+
+      /* Remove timer from whatever queue it may be on and deallocate it.  */
+      timer->inuse = TIMER_DELETED;
+      list_unlink_ip (&timer->links);
+      timer_delref (timer);
+      retval = 0;
+    }
+
+  pthread_mutex_unlock (&__timer_mutex);
+
+  return retval;
+}
diff --git a/sysdeps/pthread/timer_getoverr.c b/sysdeps/pthread/timer_getoverr.c
new file mode 100644
index 0000000..159ebf2
--- /dev/null
+++ b/sysdeps/pthread/timer_getoverr.c
@@ -0,0 +1,44 @@
+/* Copyright (C) 2000-2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Kaz Kylheku <kaz@ashi.footprints.net>.
+
+   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; see the file COPYING.LIB.  If
+   not, see <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <pthread.h>
+#include <time.h>
+
+#include "posix-timer.h"
+
+
+/* Get expiration overrun for timer TIMERID.  */
+int
+timer_getoverrun (timerid)
+     timer_t timerid;
+{
+  struct timer_node *timer;
+  int retval = -1;
+
+  pthread_mutex_lock (&__timer_mutex);
+
+  if (! timer_valid (timer = timer_id2ptr (timerid)))
+    __set_errno (EINVAL);
+  else
+    retval = timer->overrun_count;
+
+  pthread_mutex_unlock (&__timer_mutex);
+
+  return retval;
+}
diff --git a/sysdeps/pthread/timer_gettime.c b/sysdeps/pthread/timer_gettime.c
new file mode 100644
index 0000000..1e0ea69
--- /dev/null
+++ b/sysdeps/pthread/timer_gettime.c
@@ -0,0 +1,76 @@
+/* Copyright (C) 2000-2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Kaz Kylheku <kaz@ashi.footprints.net>.
+
+   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; see the file COPYING.LIB.  If
+   not, see <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <pthread.h>
+#include <time.h>
+
+#include "posix-timer.h"
+
+
+/* Get current value of timer TIMERID and store it in VLAUE.  */
+int
+timer_gettime (timerid, value)
+     timer_t timerid;
+     struct itimerspec *value;
+{
+  struct timer_node *timer;
+  struct timespec now, expiry;
+  int retval = -1, armed = 0, valid;
+  clock_t clock = 0;
+
+  pthread_mutex_lock (&__timer_mutex);
+
+  timer = timer_id2ptr (timerid);
+  valid = timer_valid (timer);
+
+  if (valid) {
+    armed = timer->armed;
+    expiry = timer->expirytime;
+    clock = timer->clock;
+    value->it_interval = timer->value.it_interval;
+  }
+
+  pthread_mutex_unlock (&__timer_mutex);
+
+  if (valid)
+    {
+      if (armed)
+	{
+	  clock_gettime (clock, &now);
+	  if (timespec_compare (&now, &expiry) < 0)
+	    timespec_sub (&value->it_value, &expiry, &now);
+	  else
+	    {
+	      value->it_value.tv_sec = 0;
+	      value->it_value.tv_nsec = 0;
+	    }
+	}
+      else
+	{
+	  value->it_value.tv_sec = 0;
+	  value->it_value.tv_nsec = 0;
+	}
+
+      retval = 0;
+    }
+  else
+    __set_errno (EINVAL);
+
+  return retval;
+}
diff --git a/sysdeps/pthread/timer_routines.c b/sysdeps/pthread/timer_routines.c
new file mode 100644
index 0000000..ce1aa41
--- /dev/null
+++ b/sysdeps/pthread/timer_routines.c
@@ -0,0 +1,577 @@
+/* Helper code for POSIX timer implementation on NPTL.
+   Copyright (C) 2000-2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Kaz Kylheku <kaz@ashi.footprints.net>.
+
+   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; see the file COPYING.LIB.  If
+   not, see <http://www.gnu.org/licenses/>.  */
+
+#include <assert.h>
+#include <errno.h>
+#include <pthread.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sysdep.h>
+#include <time.h>
+#include <unistd.h>
+#include <sys/syscall.h>
+
+#include "posix-timer.h"
+#include <pthreadP.h>
+
+
+/* Number of threads used.  */
+#define THREAD_MAXNODES	16
+
+/* Array containing the descriptors for the used threads.  */
+static struct thread_node thread_array[THREAD_MAXNODES];
+
+/* Static array with the structures for all the timers.  */
+struct timer_node __timer_array[TIMER_MAX];
+
+/* Global lock to protect operation on the lists.  */
+pthread_mutex_t __timer_mutex = PTHREAD_MUTEX_INITIALIZER;
+
+/* Variable to protext initialization.  */
+pthread_once_t __timer_init_once_control = PTHREAD_ONCE_INIT;
+
+/* Nonzero if initialization of timer implementation failed.  */
+int __timer_init_failed;
+
+/* Node for the thread used to deliver signals.  */
+struct thread_node __timer_signal_thread_rclk;
+
+/* Lists to keep free and used timers and threads.  */
+struct list_links timer_free_list;
+struct list_links thread_free_list;
+struct list_links thread_active_list;
+
+
+#ifdef __NR_rt_sigqueueinfo
+extern int __syscall_rt_sigqueueinfo (int, int, siginfo_t *);
+#endif
+
+
+/* List handling functions.  */
+static inline void
+list_init (struct list_links *list)
+{
+  list->next = list->prev = list;
+}
+
+static inline void
+list_append (struct list_links *list, struct list_links *newp)
+{
+  newp->prev = list->prev;
+  newp->next = list;
+  list->prev->next = newp;
+  list->prev = newp;
+}
+
+static inline void
+list_insbefore (struct list_links *list, struct list_links *newp)
+{
+  list_append (list, newp);
+}
+
+/*
+ * Like list_unlink_ip, except that calling it on a node that
+ * is already unlinked is disastrous rather than a noop.
+ */
+
+static inline void
+list_unlink (struct list_links *list)
+{
+  struct list_links *lnext = list->next, *lprev = list->prev;
+
+  lnext->prev = lprev;
+  lprev->next = lnext;
+}
+
+static inline struct list_links *
+list_first (struct list_links *list)
+{
+  return list->next;
+}
+
+static inline struct list_links *
+list_null (struct list_links *list)
+{
+  return list;
+}
+
+static inline struct list_links *
+list_next (struct list_links *list)
+{
+  return list->next;
+}
+
+static inline int
+list_isempty (struct list_links *list)
+{
+  return list->next == list;
+}
+
+
+/* Functions build on top of the list functions.  */
+static inline struct thread_node *
+thread_links2ptr (struct list_links *list)
+{
+  return (struct thread_node *) ((char *) list
+				 - offsetof (struct thread_node, links));
+}
+
+static inline struct timer_node *
+timer_links2ptr (struct list_links *list)
+{
+  return (struct timer_node *) ((char *) list
+				- offsetof (struct timer_node, links));
+}
+
+
+/* Initialize a newly allocated thread structure.  */
+static void
+thread_init (struct thread_node *thread, const pthread_attr_t *attr, clockid_t clock_id)
+{
+  if (attr != NULL)
+    thread->attr = *attr;
+  else
+    {
+      pthread_attr_init (&thread->attr);
+      pthread_attr_setdetachstate (&thread->attr, PTHREAD_CREATE_DETACHED);
+    }
+
+  thread->exists = 0;
+  list_init (&thread->timer_queue);
+  pthread_cond_init (&thread->cond, 0);
+  thread->current_timer = 0;
+  thread->captured = pthread_self ();
+  thread->clock_id = clock_id;
+}
+
+
+/* Initialize the global lists, and acquire global resources.  Error
+   reporting is done by storing a non-zero value to the global variable
+   timer_init_failed.  */
+static void
+init_module (void)
+{
+  int i;
+
+  list_init (&timer_free_list);
+  list_init (&thread_free_list);
+  list_init (&thread_active_list);
+
+  for (i = 0; i < TIMER_MAX; ++i)
+    {
+      list_append (&timer_free_list, &__timer_array[i].links);
+      __timer_array[i].inuse = TIMER_FREE;
+    }
+
+  for (i = 0; i < THREAD_MAXNODES; ++i)
+    list_append (&thread_free_list, &thread_array[i].links);
+
+  thread_init (&__timer_signal_thread_rclk, 0, CLOCK_REALTIME);
+}
+
+
+/* This is a handler executed in a child process after a fork()
+   occurs.  It reinitializes the module, resetting all of the data
+   structures to their initial state.  The mutex is initialized in
+   case it was locked in the parent process.  */
+static void
+reinit_after_fork (void)
+{
+  init_module ();
+  pthread_mutex_init (&__timer_mutex, 0);
+}
+
+
+/* Called once form pthread_once in timer_init. This initializes the
+   module and ensures that reinit_after_fork will be executed in any
+   child process.  */
+void
+__timer_init_once (void)
+{
+  init_module ();
+  pthread_atfork (0, 0, reinit_after_fork);
+}
+
+
+/* Deinitialize a thread that is about to be deallocated.  */
+static void
+thread_deinit (struct thread_node *thread)
+{
+  assert (list_isempty (&thread->timer_queue));
+  pthread_cond_destroy (&thread->cond);
+}
+
+
+/* Allocate a thread structure from the global free list.  Global
+   mutex lock must be held by caller.  The thread is moved to
+   the active list. */
+struct thread_node *
+__timer_thread_alloc (const pthread_attr_t *desired_attr, clockid_t clock_id)
+{
+  struct list_links *node = list_first (&thread_free_list);
+
+  if (node != list_null (&thread_free_list))
+    {
+      struct thread_node *thread = thread_links2ptr (node);
+      list_unlink (node);
+      thread_init (thread, desired_attr, clock_id);
+      list_append (&thread_active_list, node);
+      return thread;
+    }
+
+  return 0;
+}
+
+
+/* Return a thread structure to the global free list.  Global lock
+   must be held by caller.  */
+void
+__timer_thread_dealloc (struct thread_node *thread)
+{
+  thread_deinit (thread);
+  list_unlink (&thread->links);
+  list_append (&thread_free_list, &thread->links);
+}
+
+
+/* Each of our threads which terminates executes this cleanup
+   handler. We never terminate threads ourselves; if a thread gets here
+   it means that the evil application has killed it.  If the thread has
+   timers, these require servicing and so we must hire a replacement
+   thread right away.  We must also unblock another thread that may
+   have been waiting for this thread to finish servicing a timer (see
+   timer_delete()).  */
+
+static void
+thread_cleanup (void *val)
+{
+  if (val != NULL)
+    {
+      struct thread_node *thread = val;
+
+      /* How did the signal thread get killed?  */
+      assert (thread != &__timer_signal_thread_rclk);
+
+      pthread_mutex_lock (&__timer_mutex);
+
+      thread->exists = 0;
+
+      /* We are no longer processing a timer event.  */
+      thread->current_timer = 0;
+
+      if (list_isempty (&thread->timer_queue))
+	__timer_thread_dealloc (thread);
+      else
+	(void) __timer_thread_start (thread);
+
+      pthread_mutex_unlock (&__timer_mutex);
+
+      /* Unblock potentially blocked timer_delete().  */
+      pthread_cond_broadcast (&thread->cond);
+    }
+}
+
+
+/* Handle a timer which is supposed to go off now.  */
+static void
+thread_expire_timer (struct thread_node *self, struct timer_node *timer)
+{
+  self->current_timer = timer; /* Lets timer_delete know timer is running. */
+
+  pthread_mutex_unlock (&__timer_mutex);
+
+  switch (__builtin_expect (timer->event.sigev_notify, SIGEV_SIGNAL))
+    {
+    case SIGEV_NONE:
+      break;
+
+    case SIGEV_SIGNAL:
+#ifdef __NR_rt_sigqueueinfo
+      {
+	siginfo_t info;
+
+	/* First, clear the siginfo_t structure, so that we don't pass our
+	   stack content to other tasks.  */
+	memset (&info, 0, sizeof (siginfo_t));
+	/* We must pass the information about the data in a siginfo_t
+           value.  */
+	info.si_signo = timer->event.sigev_signo;
+	info.si_code = SI_TIMER;
+	info.si_pid = timer->creator_pid;
+	info.si_uid = getuid ();
+	info.si_value = timer->event.sigev_value;
+
+	INLINE_SYSCALL (rt_sigqueueinfo, 3, info.si_pid, info.si_signo, &info);
+      }
+#else
+      if (pthread_kill (self->captured, timer->event.sigev_signo) != 0)
+	{
+	  if (pthread_kill (self->id, timer->event.sigev_signo) != 0)
+	    abort ();
+        }
+#endif
+      break;
+
+    case SIGEV_THREAD:
+      timer->event.sigev_notify_function (timer->event.sigev_value);
+      break;
+
+    default:
+      assert (! "unknown event");
+      break;
+    }
+
+  pthread_mutex_lock (&__timer_mutex);
+
+  self->current_timer = 0;
+
+  pthread_cond_broadcast (&self->cond);
+}
+
+
+/* Thread function; executed by each timer thread. The job of this
+   function is to wait on the thread's timer queue and expire the
+   timers in chronological order as close to their scheduled time as
+   possible.  */
+static void
+__attribute__ ((noreturn))
+thread_func (void *arg)
+{
+  struct thread_node *self = arg;
+
+  /* Register cleanup handler, in case rogue application terminates
+     this thread.  (This cannot happen to __timer_signal_thread, which
+     doesn't invoke application callbacks). */
+
+  pthread_cleanup_push (thread_cleanup, self);
+
+  pthread_mutex_lock (&__timer_mutex);
+
+  while (1)
+    {
+      struct list_links *first;
+      struct timer_node *timer = NULL;
+
+      /* While the timer queue is not empty, inspect the first node.  */
+      first = list_first (&self->timer_queue);
+      if (first != list_null (&self->timer_queue))
+	{
+	  struct timespec now;
+
+	  timer = timer_links2ptr (first);
+
+	  /* This assumes that the elements of the list of one thread
+	     are all for the same clock.  */
+	  clock_gettime (timer->clock, &now);
+
+	  while (1)
+	    {
+	      /* If the timer is due or overdue, remove it from the queue.
+		 If it's a periodic timer, re-compute its new time and
+		 requeue it.  Either way, perform the timer expiry. */
+	      if (timespec_compare (&now, &timer->expirytime) < 0)
+		break;
+
+	      list_unlink_ip (first);
+
+	      if (__builtin_expect (timer->value.it_interval.tv_sec, 0) != 0
+		  || timer->value.it_interval.tv_nsec != 0)
+		{
+		  timer->overrun_count = 0;
+		  timespec_add (&timer->expirytime, &timer->expirytime,
+				&timer->value.it_interval);
+		  while (timespec_compare (&timer->expirytime, &now) < 0)
+		    {
+		      timespec_add (&timer->expirytime, &timer->expirytime,
+				    &timer->value.it_interval);
+		      if (timer->overrun_count < DELAYTIMER_MAX)
+			++timer->overrun_count;
+		    }
+		  __timer_thread_queue_timer (self, timer);
+		}
+
+	      thread_expire_timer (self, timer);
+
+	      first = list_first (&self->timer_queue);
+	      if (first == list_null (&self->timer_queue))
+		break;
+
+	      timer = timer_links2ptr (first);
+	    }
+	}
+
+      /* If the queue is not empty, wait until the expiry time of the
+	 first node.  Otherwise wait indefinitely.  Insertions at the
+	 head of the queue must wake up the thread by broadcasting
+	 this condition variable.  */
+      if (timer != NULL)
+	pthread_cond_timedwait (&self->cond, &__timer_mutex,
+				&timer->expirytime);
+      else
+	pthread_cond_wait (&self->cond, &__timer_mutex);
+    }
+  /* This macro will never be executed since the while loop loops
+     forever - but we have to add it for proper nesting.  */
+  pthread_cleanup_pop (1);
+}
+
+
+/* Enqueue a timer in wakeup order in the thread's timer queue.
+   Returns 1 if the timer was inserted at the head of the queue,
+   causing the queue's next wakeup time to change. */
+
+int
+__timer_thread_queue_timer (struct thread_node *thread,
+			    struct timer_node *insert)
+{
+  struct list_links *iter;
+  int athead = 1;
+
+  for (iter = list_first (&thread->timer_queue);
+       iter != list_null (&thread->timer_queue);
+        iter = list_next (iter))
+    {
+      struct timer_node *timer = timer_links2ptr (iter);
+
+      if (timespec_compare (&insert->expirytime, &timer->expirytime) < 0)
+	  break;
+      athead = 0;
+    }
+
+  list_insbefore (iter, &insert->links);
+  return athead;
+}
+
+
+/* Start a thread and associate it with the given thread node.  Global
+   lock must be held by caller.  */
+int
+__timer_thread_start (struct thread_node *thread)
+{
+  int retval = 1;
+
+  assert (!thread->exists);
+  thread->exists = 1;
+
+  if (pthread_create (&thread->id, &thread->attr,
+		      (void *(*) (void *)) thread_func, thread) != 0)
+    {
+      thread->exists = 0;
+      retval = -1;
+    }
+
+  return retval;
+}
+
+
+void
+__timer_thread_wakeup (struct thread_node *thread)
+{
+  pthread_cond_broadcast (&thread->cond);
+}
+
+
+/* Compare two pthread_attr_t thread attributes for exact equality.
+   Returns 1 if they are equal, otherwise zero if they are not equal
+   or contain illegal values.  This version is NPTL-specific for
+   performance reason.  One could use the access functions to get the
+   values of all the fields of the attribute structure.  */
+static int
+thread_attr_compare (const pthread_attr_t *left, const pthread_attr_t *right)
+{
+  struct pthread_attr *ileft = (struct pthread_attr *) left;
+  struct pthread_attr *iright = (struct pthread_attr *) right;
+
+  return (ileft->flags == iright->flags
+	  && ileft->schedpolicy == iright->schedpolicy
+	  && (ileft->schedparam.sched_priority
+	      == iright->schedparam.sched_priority)
+	  && ileft->guardsize == iright->guardsize
+	  && ileft->stackaddr == iright->stackaddr
+	  && ileft->stacksize == iright->stacksize
+	  && ((ileft->cpuset == NULL && iright->cpuset == NULL)
+	      || (ileft->cpuset != NULL && iright->cpuset != NULL
+		  && ileft->cpusetsize == iright->cpusetsize
+		  && memcmp (ileft->cpuset, iright->cpuset,
+			     ileft->cpusetsize) == 0)));
+}
+
+
+/* Search the list of active threads and find one which has matching
+   attributes.  Global mutex lock must be held by caller.  */
+struct thread_node *
+__timer_thread_find_matching (const pthread_attr_t *desired_attr,
+			      clockid_t desired_clock_id)
+{
+  struct list_links *iter = list_first (&thread_active_list);
+
+  while (iter != list_null (&thread_active_list))
+    {
+      struct thread_node *candidate = thread_links2ptr (iter);
+
+      if (thread_attr_compare (desired_attr, &candidate->attr)
+	  && desired_clock_id == candidate->clock_id)
+	return candidate;
+
+      iter = list_next (iter);
+    }
+
+  return NULL;
+}
+
+
+/* Grab a free timer structure from the global free list.  The global
+   lock must be held by the caller.  */
+struct timer_node *
+__timer_alloc (void)
+{
+  struct list_links *node = list_first (&timer_free_list);
+
+  if (node != list_null (&timer_free_list))
+    {
+      struct timer_node *timer = timer_links2ptr (node);
+      list_unlink_ip (node);
+      timer->inuse = TIMER_INUSE;
+      timer->refcount = 1;
+      return timer;
+    }
+
+  return NULL;
+}
+
+
+/* Return a timer structure to the global free list.  The global lock
+   must be held by the caller.  */
+void
+__timer_dealloc (struct timer_node *timer)
+{
+  assert (timer->refcount == 0);
+  timer->thread = NULL;	/* Break association between timer and thread.  */
+  timer->inuse = TIMER_FREE;
+  list_append (&timer_free_list, &timer->links);
+}
+
+
+/* Thread cancellation handler which unlocks a mutex.  */
+void
+__timer_mutex_cancel_handler (void *arg)
+{
+  pthread_mutex_unlock (arg);
+}
diff --git a/sysdeps/pthread/timer_settime.c b/sysdeps/pthread/timer_settime.c
new file mode 100644
index 0000000..5d3c166
--- /dev/null
+++ b/sysdeps/pthread/timer_settime.c
@@ -0,0 +1,136 @@
+/* Copyright (C) 2000-2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Kaz Kylheku <kaz@ashi.footprints.net>.
+
+   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; see the file COPYING.LIB.  If
+   not, see <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <pthread.h>
+#include <time.h>
+
+#include "posix-timer.h"
+
+
+/* Set timer TIMERID to VALUE, returning old value in OVLAUE.  */
+int
+timer_settime (timerid, flags, value, ovalue)
+     timer_t timerid;
+     int flags;
+     const struct itimerspec *value;
+     struct itimerspec *ovalue;
+{
+  struct timer_node *timer;
+  struct thread_node *thread = NULL;
+  struct timespec now;
+  int have_now = 0, need_wakeup = 0;
+  int retval = -1;
+
+  timer = timer_id2ptr (timerid);
+  if (timer == NULL)
+    {
+      __set_errno (EINVAL);
+      goto bail;
+    }
+
+  if (value->it_interval.tv_nsec < 0
+      || value->it_interval.tv_nsec >= 1000000000
+      || value->it_value.tv_nsec < 0
+      || value->it_value.tv_nsec >= 1000000000)
+    {
+      __set_errno (EINVAL);
+      goto bail;
+    }
+
+  /* Will need to know current time since this is a relative timer;
+     might as well make the system call outside of the lock now! */
+
+  if ((flags & TIMER_ABSTIME) == 0)
+    {
+      clock_gettime (timer->clock, &now);
+      have_now = 1;
+    }
+
+  pthread_mutex_lock (&__timer_mutex);
+  timer_addref (timer);
+
+  /* One final check of timer validity; this one is possible only
+     until we have the mutex, because it accesses the inuse flag. */
+
+  if (! timer_valid(timer))
+    {
+      __set_errno (EINVAL);
+      goto unlock_bail;
+    }
+
+  if (ovalue != NULL)
+    {
+      ovalue->it_interval = timer->value.it_interval;
+
+      if (timer->armed)
+	{
+	  if (! have_now)
+	    {
+	      pthread_mutex_unlock (&__timer_mutex);
+	      clock_gettime (timer->clock, &now);
+	      have_now = 1;
+	      pthread_mutex_lock (&__timer_mutex);
+	      timer_addref (timer);
+	    }
+
+	  timespec_sub (&ovalue->it_value, &timer->expirytime, &now);
+	}
+      else
+	{
+	  ovalue->it_value.tv_sec = 0;
+	  ovalue->it_value.tv_nsec = 0;
+	}
+    }
+
+  timer->value = *value;
+
+  list_unlink_ip (&timer->links);
+  timer->armed = 0;
+
+  thread = timer->thread;
+
+  /* A value of { 0, 0 } causes the timer to be stopped. */
+  if (value->it_value.tv_sec != 0
+      || __builtin_expect (value->it_value.tv_nsec != 0, 1))
+    {
+      if ((flags & TIMER_ABSTIME) != 0)
+	/* The user specified the expiration time.  */
+	timer->expirytime = value->it_value;
+      else
+	timespec_add (&timer->expirytime, &now, &value->it_value);
+
+      /* Only need to wake up the thread if timer is inserted
+	 at the head of the queue. */
+      if (thread != NULL)
+	need_wakeup = __timer_thread_queue_timer (thread, timer);
+      timer->armed = 1;
+    }
+
+  retval = 0;
+
+unlock_bail:
+  timer_delref (timer);
+  pthread_mutex_unlock (&__timer_mutex);
+
+bail:
+  if (thread != NULL && need_wakeup)
+    __timer_thread_wakeup (thread);
+
+  return retval;
+}
diff --git a/sysdeps/pthread/tst-timer.c b/sysdeps/pthread/tst-timer.c
new file mode 100644
index 0000000..16adf3c
--- /dev/null
+++ b/sysdeps/pthread/tst-timer.c
@@ -0,0 +1,159 @@
+/* Tests for POSIX timer implementation.
+   Copyright (C) 2000-2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Kaz Kylheku <kaz@ashi.footprints.net>.
+
+   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; see the file COPYING.LIB.  If
+   not, see <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <signal.h>
+#include <stdio.h>
+#include <time.h>
+#include <unistd.h>
+#include <stdlib.h>
+
+
+static void
+notify_func1 (union sigval sigval)
+{
+  puts ("notify_func1");
+}
+
+
+static void
+notify_func2 (union sigval sigval)
+{
+  puts ("notify_func2");
+}
+
+
+static void
+signal_func (int sig)
+{
+  static const char text[] = "signal_func\n";
+  signal (sig, signal_func);
+  write (STDOUT_FILENO, text, sizeof text - 1);
+}
+
+static void
+intr_sleep (int sec)
+{
+  struct timespec ts;
+
+  ts.tv_sec = sec;
+  ts.tv_nsec = 0;
+
+  while (nanosleep (&ts, &ts) == -1 && errno == EINTR)
+    ;
+}
+
+#define ZSIGALRM 14
+
+
+int
+main (void)
+{
+  struct timespec ts;
+  timer_t timer_sig, timer_thr1, timer_thr2;
+  int retval;
+  struct sigevent sigev1 =
+  {
+    .sigev_notify = SIGEV_SIGNAL,
+    .sigev_signo = ZSIGALRM
+  };
+  struct sigevent sigev2;
+  struct itimerspec itimer1 = { { 0, 200000000 }, { 0, 200000000 } };
+  struct itimerspec itimer2 = { { 0, 100000000 }, { 0, 500000000 } };
+  struct itimerspec itimer3 = { { 0, 150000000 }, { 0, 300000000 } };
+  struct itimerspec old;
+
+  retval = clock_gettime (CLOCK_REALTIME, &ts);
+
+  sigev2.sigev_notify = SIGEV_THREAD;
+  sigev2.sigev_notify_function = notify_func1;
+  sigev2.sigev_notify_attributes = NULL;
+  /* It is unnecessary to do the following but to set a good example
+     we do it anyhow.  */
+  sigev2.sigev_value.sival_ptr = NULL;
+
+  setvbuf (stdout, 0, _IOLBF, 0);
+
+  printf ("clock_gettime returned %d, timespec = { %ld, %ld }\n",
+	  retval, ts.tv_sec, ts.tv_nsec);
+
+  retval = clock_getres (CLOCK_REALTIME, &ts);
+
+  printf ("clock_getres returned %d, timespec = { %ld, %ld }\n",
+	  retval, ts.tv_sec, ts.tv_nsec);
+
+  if (timer_create (CLOCK_REALTIME, &sigev1, &timer_sig) != 0)
+    {
+      printf ("timer_create for timer_sig failed: %m\n");
+      exit (1);
+    }
+  if (timer_create (CLOCK_REALTIME, &sigev2, &timer_thr1) != 0)
+    {
+      printf ("timer_create for timer_thr1 failed: %m\n");
+      exit (1);
+    }
+  sigev2.sigev_notify_function = notify_func2;
+  if (timer_create (CLOCK_REALTIME, &sigev2, &timer_thr2) != 0)
+    {
+      printf ("timer_create for timer_thr2 failed: %m\n");
+      exit (1);
+    }
+
+  if (timer_settime (timer_thr1, 0, &itimer2, &old) != 0)
+    {
+      printf ("timer_settime for timer_thr1 failed: %m\n");
+      exit (1);
+    }
+  if (timer_settime (timer_thr2, 0, &itimer3, &old) != 0)
+    {
+      printf ("timer_settime for timer_thr2 failed: %m\n");
+      exit (1);
+    }
+
+  signal (ZSIGALRM, signal_func);
+
+  if (timer_settime (timer_sig, 0, &itimer1, &old) != 0)
+    {
+      printf ("timer_settime for timer_sig failed: %m\n");
+      exit (1);
+    }
+
+  intr_sleep (3);
+
+  if (timer_delete (timer_sig) != 0)
+    {
+      printf ("timer_delete for timer_sig failed: %m\n");
+      exit (1);
+    }
+  if (timer_delete (timer_thr1) != 0)
+    {
+      printf ("timer_delete for timer_thr1 failed: %m\n");
+      exit (1);
+    }
+
+  intr_sleep (3);
+
+  if (timer_delete (timer_thr2) != 0)
+    {
+      printf ("timer_delete for timer_thr2 failed: %m\n");
+      exit (1);
+    }
+
+  return 0;
+}
diff --git a/sysdeps/unix/sysv/linux/Implies b/sysdeps/unix/sysv/linux/Implies
index b04bb6b..a579e63 100644
--- a/sysdeps/unix/sysv/linux/Implies
+++ b/sysdeps/unix/sysv/linux/Implies
@@ -1,3 +1,6 @@
+# All Linux builds use NPTL.
+nptl
+
 # The gnu subdirectory exists for things common to both Linux-based and
 # Hurd-based GNU systems.
 gnu
diff --git a/sysdeps/unix/sysv/linux/pthread_sigmask.c b/sysdeps/unix/sysv/linux/pthread_sigmask.c
new file mode 100644
index 0000000..21f0665
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/pthread_sigmask.c
@@ -0,0 +1,57 @@
+/* Copyright (C) 2002-2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
+
+   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/>.  */
+
+#include <errno.h>
+#include <signal.h>
+#include <pthreadP.h>
+#include <sysdep.h>
+
+
+int
+pthread_sigmask (how, newmask, oldmask)
+     int how;
+     const sigset_t *newmask;
+     sigset_t *oldmask;
+{
+  sigset_t local_newmask;
+
+  /* The only thing we have to make sure here is that SIGCANCEL and
+     SIGSETXID is not blocked.  */
+  if (newmask != NULL
+      && (__builtin_expect (__sigismember (newmask, SIGCANCEL), 0)
+	  || __builtin_expect (__sigismember (newmask, SIGSETXID), 0)))
+    {
+      local_newmask = *newmask;
+      __sigdelset (&local_newmask, SIGCANCEL);
+      __sigdelset (&local_newmask, SIGSETXID);
+      newmask = &local_newmask;
+    }
+
+#ifdef INTERNAL_SYSCALL
+  /* We know that realtime signals are available if NPTL is used.  */
+  INTERNAL_SYSCALL_DECL (err);
+  int result = INTERNAL_SYSCALL (rt_sigprocmask, err, 4, how, newmask,
+				 oldmask, _NSIG / 8);
+
+  return (INTERNAL_SYSCALL_ERROR_P (result, err)
+	  ? INTERNAL_SYSCALL_ERRNO (result, err)
+	  : 0);
+#else
+  return sigprocmask (how, newmask, oldmask) == -1 ? errno : 0;
+#endif
+}