2003-03-17 Roland McGrath <roland@redhat.com>

	PowerPC port contributed by Paul Mackerras <paulus@samba.org>.
	* sysdeps/pthread/pthread_spin_init.c: New file.
	* sysdeps/pthread/pthread_spin_unlock.c: New file.
	* sysdeps/powerpc/Makefile: New file.
	* sysdeps/powerpc/pthread_spin_lock.c: New file.
	* sysdeps/powerpc/pthread_spin_trylock.c: New file.
	* sysdeps/powerpc/pthreaddef.h: New file.
	* sysdeps/powerpc/tcb-offsets.sym: New file.
	* sysdeps/powerpc/td_ta_map_lwp2thr.c: New file.
	* sysdeps/powerpc/tls.h: New file.
	* sysdeps/powerpc/bits/atomic.h: New file.
	* sysdeps/unix/sysv/linux/libc-lowlevelmutex.c: New file.
	* sysdeps/unix/sysv/linux/libc-lowlevellock.c: New file.
	* sysdeps/unix/sysv/linux/lowlevellock.c: New file.
	* sysdeps/unix/sysv/linux/sem_post.c: New file.
	* sysdeps/unix/sysv/linux/sem_timedwait.c: New file.
	* sysdeps/unix/sysv/linux/sem_trywait.c: New file.
	* sysdeps/unix/sysv/linux/powerpc/Makefile: New file.
	* sysdeps/unix/sysv/linux/powerpc/createthread.c: New file.
	* sysdeps/unix/sysv/linux/powerpc/fork.c: New file.
	* sysdeps/unix/sysv/linux/powerpc/lowlevellock.h: New file.
	* sysdeps/unix/sysv/linux/powerpc/pt-vfork.S: New file.
	* sysdeps/unix/sysv/linux/powerpc/pthread_once.c: New file.
	* sysdeps/unix/sysv/linux/powerpc/bits/pthreadtypes.h: New file.
	* sysdeps/unix/sysv/linux/powerpc/bits/semaphore.h: New file.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep-cancel.h: New file.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep-cancel.h: New file.

16 files changed, 1147 insertions, 0 deletions

diff --git a/nptl/sysdeps/unix/sysv/linux/libc-lowlevellock.c b/nptl/sysdeps/unix/sysv/linux/libc-lowlevellock.c
new file mode 100644
index 0000000..b192822
--- /dev/null
+++ b/nptl/sysdeps/unix/sysv/linux/libc-lowlevellock.c
@@ -0,0 +1,21 @@
+/* Copyright (C) 2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Paul Mackerras <paulus@au.ibm.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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+/* No difference to lowlevellock.c, except we lose a couple of functions.  */
+#include "lowlevellock.c"
diff --git a/nptl/sysdeps/unix/sysv/linux/libc-lowlevelmutex.c b/nptl/sysdeps/unix/sysv/linux/libc-lowlevelmutex.c
new file mode 100644
index 0000000..7c594e3
--- /dev/null
+++ b/nptl/sysdeps/unix/sysv/linux/libc-lowlevelmutex.c
@@ -0,0 +1 @@
+/* Nothing needed here in fact.  */
diff --git a/nptl/sysdeps/unix/sysv/linux/lowlevellock.c b/nptl/sysdeps/unix/sysv/linux/lowlevellock.c
new file mode 100644
index 0000000..b80e153
--- /dev/null
+++ b/nptl/sysdeps/unix/sysv/linux/lowlevellock.c
@@ -0,0 +1,140 @@
+/* low level locking for pthread library.  Generic futex-using version.
+   Copyright (C) 2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Paul Mackerras <paulus@au.ibm.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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <errno.h>
+#include <sysdep.h>
+#include <lowlevellock.h>
+#include <sys/time.h>
+
+
+void
+__lll_lock_wait (int *futex, int val)
+{
+  do {
+      lll_futex_wait (futex, val+1);
+  } while ((val = __lll_add (futex, 1)) != 0);
+  *futex = 2;
+}
+hidden_proto (__lll_lock_wait)
+
+
+int
+__lll_timedlock_wait (int *futex, int val, const struct timespec *abstime)
+{
+  int err;
+
+  /* Reject invalid timeouts.  */
+  if (abstime->tv_nsec >= 1000000000)
+    return EINVAL;
+
+  do
+    {
+      struct timeval tv;
+      struct timespec rt;
+      int sec, nsec;
+
+      /* Get the current time.  */
+      __gettimeofday (&tv, NULL);
+
+      /* Compute relative timeout.  */
+      sec = abstime->tv_sec - tv.tv_sec;
+      nsec = abstime->tv_nsec - tv.tv_usec * 1000;
+      if (nsec < 0)
+	{
+	  nsec += 1000000000;
+	  --sec;
+	}
+
+      /* Already timed out?  */
+      err = -ETIMEDOUT;
+      if (sec < 0)
+	break;
+
+      /* Wait.  */
+      rt.tv_sec = sec;
+      rt.tv_nsec = nsec;
+      err = lll_futex_timed_wait (futex, val+1, &rt);
+    } while (err == 0 && (val = __lll_add (futex, 1)) != 0);
+
+  *futex = 2;
+  return -err;
+}
+hidden_proto (__lll_timedlock_wait)
+
+
+/* These don't get included in libc.so  */
+#ifdef IS_IN_libpthread
+int
+lll_unlock_wake_cb (int *futex)
+{
+  __lll_add (futex, 1);
+  return 0;
+}
+hidden_proto (lll_unlock_wake_cb)
+
+
+int
+__lll_timedwait_tid (int *tidp, const struct timespec *abstime)
+{
+  int tid;
+  int err = 0;
+
+  if (abstime == NULL || abstime->tv_nsec >= 1000000000)
+    return EINVAL;
+
+  /* Repeat until thread terminated.  */
+  while ((tid = *tidp) != 0)
+    {
+      struct timeval tv;
+      struct timespec rt;
+      int sec, nsec;
+
+      /* Get the current time.  */
+      __gettimeofday (&tv, NULL);
+
+      /* Compute relative timeout.  */
+      sec = abstime->tv_sec - tv.tv_sec;
+      nsec = abstime->tv_nsec - tv.tv_usec * 1000;
+      if (nsec < 0)
+	{
+	  nsec += 1000000000;
+	  --sec;
+	}
+
+      /* Already timed out?  */
+      err = -ETIMEDOUT;
+      if (sec < 0)
+	break;
+
+      /* Wait.  */
+      rt.tv_sec = sec;
+      rt.tv_nsec = nsec;
+
+      /* Wait until thread terminates.  */
+      err = lll_futex_timed_wait (tidp, tid, &rt);
+      if (err != 0)
+	break;
+    }
+
+  return -err;
+}
+
+hidden_proto (__lll_timedwait_tid)
+#endif
diff --git a/nptl/sysdeps/unix/sysv/linux/powerpc/Makefile b/nptl/sysdeps/unix/sysv/linux/powerpc/Makefile
new file mode 100644
index 0000000..e98c9bd
--- /dev/null
+++ b/nptl/sysdeps/unix/sysv/linux/powerpc/Makefile
@@ -0,0 +1,2 @@
+# pull in __syscall_error routine
+libpthread-routines += sysdep
diff --git a/nptl/sysdeps/unix/sysv/linux/powerpc/bits/pthreadtypes.h b/nptl/sysdeps/unix/sysv/linux/powerpc/bits/pthreadtypes.h
new file mode 100644
index 0000000..332f50f
--- /dev/null
+++ b/nptl/sysdeps/unix/sysv/linux/powerpc/bits/pthreadtypes.h
@@ -0,0 +1,167 @@
+/* Machine-specific pthread type layouts.  PowerPC version.
+   Copyright (C) 2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Paul Mackerras <paulus@au.ibm.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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#ifndef _BITS_PTHREADTYPES_H
+#define _BITS_PTHREADTYPES_H	1
+
+#include <bits/wordsize.h>
+
+#if __WORDSIZE == 64
+# define __SIZEOF_PTHREAD_ATTR_T 56
+# define __SIZEOF_PTHREAD_MUTEX_T 40
+# define __SIZEOF_PTHREAD_MUTEXATTR_T 4
+# define __SIZEOF_PTHREAD_COND_T 48
+# define __SIZEOF_PTHREAD_CONDATTR_T 4
+# define __SIZEOF_PTHREAD_RWLOCK_T 56
+# define __SIZEOF_PTHREAD_RWLOCKATTR_T 8
+# define __SIZEOF_PTHREAD_BARRIER_T 32
+# define __SIZEOF_PTHREAD_BARRIERATTR_T 4
+#else
+# define __SIZEOF_PTHREAD_ATTR_T 36
+# define __SIZEOF_PTHREAD_MUTEX_T 24
+# define __SIZEOF_PTHREAD_MUTEXATTR_T 4
+# define __SIZEOF_PTHREAD_COND_T 48
+# define __SIZEOF_PTHREAD_CONDATTR_T 4
+# define __SIZEOF_PTHREAD_RWLOCK_T 32
+# define __SIZEOF_PTHREAD_RWLOCKATTR_T 8
+# define __SIZEOF_PTHREAD_BARRIER_T 20
+# define __SIZEOF_PTHREAD_BARRIERATTR_T 4
+#endif
+
+
+/* Thread identifiers.  The structure of the attribute type is
+   deliberately not exposed.  */
+typedef struct __opaque_pthread *pthread_t;
+
+
+typedef union
+{
+  char __size[__SIZEOF_PTHREAD_ATTR_T];
+  long int __align;
+} pthread_attr_t;
+
+
+/* Data structures for mutex handling.  The structure of the attribute
+   type is deliberately not exposed.  */
+typedef union
+{
+  struct
+  {
+    int __lock;
+    unsigned int __count;
+    struct pthread *__owner;
+    /* KIND must stay at this position in the structure to maintain
+       binary compatibility.  */
+    int __kind;
+  } __data;
+  char __size[__SIZEOF_PTHREAD_MUTEX_T];
+  long int __align;
+} pthread_mutex_t;
+
+typedef union
+{
+  char __size[__SIZEOF_PTHREAD_MUTEXATTR_T];
+  long int __align;
+} pthread_mutexattr_t;
+
+
+/* Data structure for conditional variable handling.  The structure of
+   the attribute type is deliberately not exposed.  */
+typedef union
+{
+  struct
+  {
+    int __lock;
+    int __pad;
+    unsigned long long int __total_seq;
+    unsigned long long int __wakeup_seq;
+    unsigned long long int __woken_seq;
+  } __data;
+  char __size[__SIZEOF_PTHREAD_COND_T];
+  long int __align;
+} pthread_cond_t;
+
+typedef union
+{
+  char __size[__SIZEOF_PTHREAD_CONDATTR_T];
+  long int __align;
+} pthread_condattr_t;
+
+
+/* Keys for thread-specific data */
+typedef unsigned int pthread_key_t;
+
+
+/* Once-only execution */
+typedef int pthread_once_t;
+
+
+#ifdef __USE_UNIX98
+/* Data structure for read-write lock variable handling.  The
+   structure of the attribute type is deliberately not exposed.  */
+typedef union
+{
+  struct
+  {
+    int __lock;
+    unsigned int __nr_readers;
+    unsigned int __readers_wakeup;
+    unsigned int __writer_wakeup;
+    unsigned int __nr_readers_queued;
+    unsigned int __nr_writers_queued;
+    pthread_t __writer;
+    /* FLAGS must stay at this position in the structure to maintain
+       binary compatibility.  */
+    unsigned int __flags;
+  } __data;
+  char __size[__SIZEOF_PTHREAD_RWLOCK_T];
+  long int __align;
+} pthread_rwlock_t;
+
+typedef union
+{
+  char __size[__SIZEOF_PTHREAD_RWLOCKATTR_T];
+  long int __align;
+} pthread_rwlockattr_t;
+#endif
+
+
+#ifdef __USE_XOPEN2K
+/* POSIX spinlock data type.  */
+typedef volatile int pthread_spinlock_t;
+
+
+/* POSIX barriers data type.  The structure of the type is
+   deliberately not exposed.  */
+typedef union
+{
+  char __size[__SIZEOF_PTHREAD_BARRIER_T];
+  long int __align;
+} pthread_barrier_t;
+
+typedef union
+{
+  char __size[__SIZEOF_PTHREAD_BARRIERATTR_T];
+  int __align;
+} pthread_barrierattr_t;
+#endif
+
+
+#endif	/* bits/pthreadtypes.h */
diff --git a/nptl/sysdeps/unix/sysv/linux/powerpc/bits/semaphore.h b/nptl/sysdeps/unix/sysv/linux/powerpc/bits/semaphore.h
new file mode 100644
index 0000000..02100d1
--- /dev/null
+++ b/nptl/sysdeps/unix/sysv/linux/powerpc/bits/semaphore.h
@@ -0,0 +1,44 @@
+/* Machine-specific POSIX semaphore type layouts.  PowerPC version.
+   Copyright (C) 2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Paul Mackerras <paulus@au.ibm.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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#ifndef _SEMAPHORE_H
+# error "Never use <bits/semaphore.h> directly; include <semaphore.h> instead."
+#endif
+
+#include <bits/wordsize.h>
+
+#if __WORDSIZE == 64
+# define __SIZEOF_SEM_T	32
+#else
+# define __SIZEOF_SEM_T	16
+#endif
+
+/* Value returned if `sem_open' failed.  */
+#define SEM_FAILED      ((sem_t *) 0)
+
+/* Maximum value the semaphore can have.  */
+#define SEM_VALUE_MAX   ((int) ((~0u) >> 1))
+
+
+typedef union
+{
+  char __size[__SIZEOF_SEM_T];
+  long int __align;
+} sem_t;
diff --git a/nptl/sysdeps/unix/sysv/linux/powerpc/createthread.c b/nptl/sysdeps/unix/sysv/linux/powerpc/createthread.c
new file mode 100644
index 0000000..bcbcdd7
--- /dev/null
+++ b/nptl/sysdeps/unix/sysv/linux/powerpc/createthread.c
@@ -0,0 +1,25 @@
+/* Copyright (C) 2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Paul Mackerras <paulus@au.ibm.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; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+/* Value passed to 'clone' for initialization of the thread register.  */
+#define TLS_VALUE ((void *) (pd) \
+		   + TLS_TCB_OFFSET + TLS_TCB_SIZE + TLS_PRE_TCB_SIZE)
+
+/* Get the real implementation.	 */
+#include <nptl/sysdeps/pthread/createthread.c>
diff --git a/nptl/sysdeps/unix/sysv/linux/powerpc/fork.c b/nptl/sysdeps/unix/sysv/linux/powerpc/fork.c
new file mode 100644
index 0000000..06b7e1c
--- /dev/null
+++ b/nptl/sysdeps/unix/sysv/linux/powerpc/fork.c
@@ -0,0 +1 @@
+#include "../i386/fork.c"
diff --git a/nptl/sysdeps/unix/sysv/linux/powerpc/lowlevellock.h b/nptl/sysdeps/unix/sysv/linux/powerpc/lowlevellock.h
new file mode 100644
index 0000000..3295b63
--- /dev/null
+++ b/nptl/sysdeps/unix/sysv/linux/powerpc/lowlevellock.h
@@ -0,0 +1,224 @@
+/* Copyright (C) 2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Paul Mackerras <paulus@au.ibm.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 Libr	\ary; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#ifndef _LOWLEVELLOCK_H
+#define _LOWLEVELLOCK_H	1
+
+#include <time.h>
+#include <sys/param.h>
+#include <bits/pthreadtypes.h>
+
+#define __NR_futex		221
+#define FUTEX_WAIT		0
+#define FUTEX_WAKE		1
+
+/* Initializer for compatibility lock.	*/
+#define LLL_MUTEX_LOCK_INITIALIZER (0)
+
+#define lll_futex_wait(futexp, val)				\
+  ({								\
+    INTERNAL_SYSCALL_DECL (__err);				\
+    long int __ret;						\
+								\
+    __ret = INTERNAL_SYSCALL (futex, __err, 4,			\
+			      (futexp), FUTEX_WAIT, (val), 0);	\
+    INTERNAL_SYSCALL_ERROR_P (__ret, __err)? -__ret: 0;		\
+  })
+
+#define lll_futex_timed_wait(futexp, val, timespec)			\
+  ({									\
+    INTERNAL_SYSCALL_DECL (__err);					\
+    long int __ret;							\
+									\
+    __ret = INTERNAL_SYSCALL (futex, __err, 4,				\
+			      (futexp), FUTEX_WAIT, (val), (timespec));	\
+    INTERNAL_SYSCALL_ERROR_P (__ret, __err)? -__ret: 0;			\
+  })
+
+#define lll_futex_wake(futexp, nr) 				\
+  ({								\
+    INTERNAL_SYSCALL_DECL (__err);				\
+    long int __ret;						\
+								\
+    __ret = INTERNAL_SYSCALL (futex, __err, 4,			\
+			      (futexp), FUTEX_WAKE, (nr), 0);	\
+    INTERNAL_SYSCALL_ERROR_P (__ret, __err)? -__ret: 0;		\
+  })
+
+#ifdef UP
+#define __lll_acq_instr	""
+#define __lll_rel_instr	""
+#else
+#define __lll_acq_instr	"isync"
+#define __lll_rel_instr	"sync"
+#endif
+
+/* Set *futex to 1 if it is 0, atomically.  Returns the old value */
+#define __lll_trylock(futex)				\
+  ({ int __val;							\
+     __asm __volatile ("1:	lwarx	%0,0,%2\n"		\
+		       "	cmpwi	0,%0,0\n"		\
+		       "	bne	2f\n"			\
+		       "	stwcx.	%3,0,%2\n"		\
+		       "	bne-	1b\n"			\
+		       "2:	" __lll_acq_instr		\
+		       : "=&r" (__val), "=m" (*futex)		\
+		       : "r" (futex), "r" (1), "1" (*futex)	\
+		       : "cr0", "memory");			\
+     __val;							\
+  })
+
+#define lll_mutex_trylock(lock)	__lll_trylock(&(lock))
+
+/* Add inc to *futex atomically and return the old value. */
+#define __lll_add(futex, inc)						\
+  ({ int __val, __tmp;							\
+     __asm __volatile ("1:	lwarx	%0,0,%3\n"			\
+		       "	addi	%1,%0,%4\n"			\
+		       "	stwcx.	%1,0,%3\n"			\
+		       "	bne-	1b"				\
+		       : "=&b" (__val), "=&r" (__tmp), "=m" (*futex)	\
+		       : "r" (futex), "I" (inc), "2" (*futex)		\
+		       : "cr0");					\
+     __val;								\
+  })
+
+extern void __lll_lock_wait (int *futex, int val) attribute_hidden;
+
+#define lll_mutex_lock(lock)				\
+  (void) ({						\
+    int *__futex = &(lock);				\
+    int __val = __lll_add (__futex, 1);			\
+    __asm __volatile (__lll_acq_instr ::: "memory");	\
+    if (__builtin_expect (__val != 0, 0))		\
+      __lll_lock_wait (__futex, __val);			\
+  })
+
+extern int __lll_timedlock_wait
+	(int *futex, int val, const struct timespec *) attribute_hidden;
+
+#define lll_mutex_timedlock(lock, abstime)			\
+  ({ int *__futex = &(lock);						\
+     int __val = __lll_add (__futex, 1);				\
+     __asm __volatile (__lll_acq_instr ::: "memory");			\
+     if (__builtin_expect (__val != 0, 0))				\
+       __val = __lll_timedlock_wait (__futex, __val, (abstime));	\
+     __val;								\
+  })
+
+#define lll_mutex_unlock(lock)				\
+  (void) ({						\
+    int *__futex = &(lock);				\
+     __asm __volatile (__lll_rel_instr ::: "memory");	\
+    int __val = __lll_add (__futex, -1);		\
+    if (__builtin_expect (__val != 1, 0))		\
+      {							\
+	*__futex = 0;					\
+	lll_futex_wake (__futex, 1);			\
+      }							\
+  })
+
+#define lll_mutex_islocked(futex) \
+  (futex != 0)
+
+
+/* Our internal lock implementation is identical to the binary-compatible
+   mutex implementation. */
+
+/* Type for lock object.  */
+typedef int lll_lock_t;
+
+/* Initializers for lock.  */
+#define LLL_LOCK_INITIALIZER		(0)
+#define LLL_LOCK_INITIALIZER_LOCKED	(1)
+
+extern int lll_unlock_wake_cb (int *__futex) attribute_hidden;
+
+/* The states of a lock are:
+    0  -  untaken
+    1  -  taken by one user
+   >1  -  taken by more users */
+
+#define lll_trylock(lock)	lll_mutex_trylock (lock)
+#define lll_lock(lock)		lll_mutex_lock (lock)
+#define lll_unlock(lock)	lll_mutex_unlock (lock)
+#define lll_islocked(lock)	lll_mutex_islocked (lock)
+
+/* The kernel notifies a process which uses CLONE_CLEARTID via futex
+   wakeup when the clone terminates.  The memory location contains the
+   thread ID while the clone is running and is reset to zero
+   afterwards.	*/
+#define lll_wait_tid(tid)			\
+  do {						\
+    __typeof (tid) __tid;			\
+    while ((__tid = (tid)) != 0)		\
+      lll_futex_wait (&(tid), __tid);		\
+  } while (0)
+
+extern int __lll_timedwait_tid (int *, const struct timespec *)
+     attribute_hidden;
+
+#define lll_timedwait_tid(tid, abstime)			\
+  ({							\
+    int __res = 0;					\
+    if ((tid) != 0)					\
+      __res = __lll_timedwait_tid (&(tid), (abstime));	\
+    __res;						\
+  })
+
+
+/* Decrement *futex if it is > 0, and return the old value */
+#define __lll_dec_if_positive(futex)					\
+  ({ int __val, __tmp;							\
+     __asm __volatile ("1:	lwarx	%0,0,%3\n"			\
+		       "	cmpwi	0,%0,0\n"			\
+		       "	addi	%1,%0,-1\n"			\
+		       "	ble	2f\n"				\
+		       "	stwcx.	%1,0,%3\n"			\
+		       "	bne-	1b\n"				\
+		       "2:	" __lll_acq_instr			\
+		       : "=&b" (__val), "=&r" (__tmp), "=m" (*futex)	\
+		       : "r" (futex), "2" (*futex)			\
+		       : "cr0");					\
+     __val;								\
+  })
+
+
+/* Conditional variable handling.  */
+
+extern void __lll_cond_wait (pthread_cond_t *cond)
+     attribute_hidden;
+extern int __lll_cond_timedwait (pthread_cond_t *cond,
+				 const struct timespec *abstime)
+     attribute_hidden;
+extern void __lll_cond_wake (pthread_cond_t *cond)
+     attribute_hidden;
+extern void __lll_cond_broadcast (pthread_cond_t *cond)
+     attribute_hidden;
+
+#define lll_cond_wait(cond) \
+  __lll_cond_wait (cond)
+#define lll_cond_timedwait(cond, abstime) \
+  __lll_cond_timedwait (cond, abstime)
+#define lll_cond_wake(cond) \
+  __lll_cond_wake (cond)
+#define lll_cond_broadcast(cond) \
+  __lll_cond_broadcast (cond)
+
+#endif	/* lowlevellock.h */
diff --git a/nptl/sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep-cancel.h b/nptl/sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep-cancel.h
new file mode 100644
index 0000000..d256f8d
--- /dev/null
+++ b/nptl/sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep-cancel.h
@@ -0,0 +1,102 @@
+/* Cancellable system call stubs.  Linux/PowerPC version.
+   Copyright (C) 2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Franz Sirl <Franz.Sirl-kernel@lauterbach.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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <sysdep.h>
+#include <tls.h>
+#ifndef __ASSEMBLER__
+# include <nptl/pthreadP.h>
+#endif
+
+#if !defined NOT_IN_libc || defined IS_IN_libpthread
+
+# undef PSEUDO
+# define PSEUDO(name, syscall_name, args)				\
+  .section ".text";							\
+  ENTRY (name)								\
+    SINGLE_THREAD_P;							\
+    bne- .Lpseudo_cancel;						\
+    DO_CALL (SYS_ify (syscall_name));					\
+    PSEUDO_RET;								\
+  .Lpseudo_cancel:							\
+    stwu 1,-48(1);							\
+    mflr 9;								\
+    stw 9,52(1);							\
+    DOCARGS_##args;	/* save syscall args around CENABLE.  */	\
+    CENABLE;								\
+    stw 3,16(1);	/* store CENABLE return value (MASK).  */	\
+    UNDOCARGS_##args;	/* restore syscall args.  */			\
+    DO_CALL (SYS_ify (syscall_name));					\
+    mfcr 0;		/* save CR/R3 around CDISABLE.  */		\
+    stw 3,8(1);								\
+    stw 0,12(1);							\
+    lwz 3,16(1);	/* pass MASK to CDISABLE.  */			\
+    CDISABLE;								\
+    lwz 4,52(1);							\
+    lwz 0,12(1);	/* restore CR/R3. */				\
+    lwz 3,8(1);								\
+    mtlr 4;								\
+    mtcr 0;								\
+    addi 1,1,48;
+
+# define DOCARGS_0
+# define UNDOCARGS_0
+
+# define DOCARGS_1	stw 3,20(1); DOCARGS_0
+# define UNDOCARGS_1	lwz 3,20(1); UNDOCARGS_0
+
+# define DOCARGS_2	stw 4,24(1); DOCARGS_1
+# define UNDOCARGS_2	lwz 4,24(1); UNDOCARGS_1
+
+# define DOCARGS_3	stw 5,28(1); DOCARGS_2
+# define UNDOCARGS_3	lwz 5,28(1); UNDOCARGS_2
+
+# define DOCARGS_4	stw 6,32(1); DOCARGS_3
+# define UNDOCARGS_4	lwz 6,32(1); UNDOCARGS_3
+
+# define DOCARGS_5	stw 7,36(1); DOCARGS_4
+# define UNDOCARGS_5	lwz 7,36(1); UNDOCARGS_4
+
+# define DOCARGS_6	stw 8,40(1); DOCARGS_5
+# define UNDOCARGS_6	lwz 8,40(1); UNDOCARGS_5
+
+# ifdef IS_IN_libpthread
+#  define CENABLE	bl JUMPTARGET(__pthread_enable_asynccancel)
+#  define CDISABLE	bl JUMPTARGET(__pthread_disable_asynccancel)
+# else
+#  define CENABLE	bl JUMPTARGET(__libc_enable_asynccancel)
+#  define CDISABLE	bl JUMPTARGET(__libc_disable_asynccancel)
+# endif
+
+# ifndef __ASSEMBLER__
+#  define SINGLE_THREAD_P						\
+  __builtin_expect (THREAD_GETMEM (THREAD_SELF,				\
+				   header.multiple_threads) == 0, 1)
+# else
+#  define SINGLE_THREAD_P						\
+  lwz 10,MULTIPLE_THREADS_OFFSET(2);					\
+  cmpwi 10,0
+# endif
+
+#elif !defined __ASSEMBLER__
+
+/* This code should never be used but we define it anyhow.  */
+# define SINGLE_THREAD_P (1)
+
+#endif
diff --git a/nptl/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep-cancel.h b/nptl/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep-cancel.h
new file mode 100644
index 0000000..4a6cbf0
--- /dev/null
+++ b/nptl/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep-cancel.h
@@ -0,0 +1,102 @@
+/* Cancellable system call stubs.  Linux/PowerPC64 version.
+   Copyright (C) 2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Franz Sirl <Franz.Sirl-kernel@lauterbach.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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <sysdep.h>
+#include <tls.h>
+#ifndef __ASSEMBLER__
+# include <nptl/pthreadP.h>
+#endif
+
+#if !defined NOT_IN_libc || defined IS_IN_libpthread
+
+# undef PSEUDO
+# define PSEUDO(name, syscall_name, args)				\
+  .section ".text";							\
+  ENTRY (name)								\
+    SINGLE_THREAD_P;							\
+    bne- .Lpseudo_cancel;						\
+    DO_CALL (SYS_ify (syscall_name));					\
+    PSEUDO_RET;								\
+  .Lpseudo_cancel:							\
+    stdu 1,-128(1);							\
+    mflr 9;								\
+    std  9,128+16(1);							\
+    DOCARGS_##args;	/* save syscall args around CENABLE.  */	\
+    CENABLE;								\
+    std  3,72(1);	/* store CENABLE return value (MASK).  */	\
+    UNDOCARGS_##args;	/* restore syscall args.  */			\
+    DO_CALL (SYS_ify (syscall_name));					\
+    mfcr 0;		/* save CR/R3 around CDISABLE.  */		\
+    std  3,64(1);								\
+    std  0,8(1);							\
+    ld   3,72(1);	/* pass MASK to CDISABLE.  */			\
+    CDISABLE;								\
+    ld   9,128+16(1);							\
+    ld   0,8(1);	/* restore CR/R3. */				\
+    ld   3,64(1);								\
+    mtlr 9;								\
+    mtcr 0;								\
+    addi 1,1,128;
+
+# define DOCARGS_0
+# define UNDOCARGS_0
+
+# define DOCARGS_1	std 3,80(1); DOCARGS_0
+# define UNDOCARGS_1	ld 3,80(1); UNDOCARGS_0
+
+# define DOCARGS_2	std 4,88(1); DOCARGS_1
+# define UNDOCARGS_2	ld 4,88(1); UNDOCARGS_1
+
+# define DOCARGS_3	std 5,96(1); DOCARGS_2
+# define UNDOCARGS_3	ld 5,96(1); UNDOCARGS_2
+
+# define DOCARGS_4	std 6,104(1); DOCARGS_3
+# define UNDOCARGS_4	ld 6,104(1); UNDOCARGS_3
+
+# define DOCARGS_5	std 7,112(1); DOCARGS_4
+# define UNDOCARGS_5	ld 7,112(1); UNDOCARGS_4
+
+# define DOCARGS_6	std 8,120(1); DOCARGS_5
+# define UNDOCARGS_6	ld 8,120(1); UNDOCARGS_5
+
+# ifdef IS_IN_libpthread
+#  define CENABLE	bl JUMPTARGET(__pthread_enable_asynccancel)
+#  define CDISABLE	bl JUMPTARGET(__pthread_disable_asynccancel)
+# else
+#  define CENABLE	bl JUMPTARGET(__libc_enable_asynccancel)
+#  define CDISABLE	bl JUMPTARGET(__libc_disable_asynccancel)
+# endif
+
+# ifndef __ASSEMBLER__
+#  define SINGLE_THREAD_P						\
+  __builtin_expect (THREAD_GETMEM (THREAD_SELF, multiple_threads) \
+		    == 0, 1)
+# else
+#   define SINGLE_THREAD_P						\
+  lwz   10,MULTIPLE_THREADS_OFFSET(13);				\
+  cmpdi 10,0
+# endif
+
+#elif !defined __ASSEMBLER__
+
+/* This code should never be used but we define it anyhow.  */
+# define SINGLE_THREAD_P (1)
+
+#endif
diff --git a/nptl/sysdeps/unix/sysv/linux/powerpc/pt-vfork.S b/nptl/sysdeps/unix/sysv/linux/powerpc/pt-vfork.S
new file mode 100644
index 0000000..46e33c0
--- /dev/null
+++ b/nptl/sysdeps/unix/sysv/linux/powerpc/pt-vfork.S
@@ -0,0 +1,35 @@
+/* Copyright (C) 2003 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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <sysdep-cancel.h>
+#define _ERRNO_H	1
+#include <bits/errno.h>
+#include <kernel-features.h>
+
+/* Clone the calling process, but without copying the whole address space.
+   The calling process is suspended until the new process exits or is
+   replaced by a call to `execve'.  Return -1 for errors, 0 to the new process,
+   and the process ID of the new process to the old process.  */
+
+ENTRY (__vfork)
+	DO_CALL (SYS_ify (vfork));
+	PSEUDO_RET
+
+PSEUDO_END (__vfork)
+
+weak_alias (__vfork, vfork)
diff --git a/nptl/sysdeps/unix/sysv/linux/powerpc/pthread_once.c b/nptl/sysdeps/unix/sysv/linux/powerpc/pthread_once.c
new file mode 100644
index 0000000..18029e9
--- /dev/null
+++ b/nptl/sysdeps/unix/sysv/linux/powerpc/pthread_once.c
@@ -0,0 +1,99 @@
+/* Copyright (C) 2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Paul Mackerras <paulus@au.ibm.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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include "pthreadP.h"
+#include <lowlevellock.h>
+
+
+unsigned long int __fork_generation attribute_hidden;
+
+
+static void
+clear_once_control (void *arg)
+{
+  pthread_once_t *once_control = (pthread_once_t *) arg;
+
+  *once_control = 0;
+  lll_futex_wake (once_control, INT_MAX);
+}
+
+
+int
+__pthread_once (pthread_once_t *once_control, void (*init_routine) (void))
+{
+  for (;;)
+    {
+      int oldval;
+      int newval;
+      int tmp;
+
+      /* Pseudo code:
+	 newval = __fork_generation | 1;
+	 oldval = *once_control;
+	 if ((oldval & 2) == 0)
+	   *once_control = newval;
+	 Do this atomically.
+      */
+      newval = __fork_generation | 1;
+      __asm __volatile ("1:	lwarx	%0,0,%3\n"
+			"	andi.	%1,%0,2\n"
+			"	bne	2f\n"
+			"	stwcx.	%4,0,%3\n"
+			"2:	isync"
+			: "=&r" (oldval), "=&r" (tmp), "=m" (*once_control)
+			: "r" (once_control), "r" (newval), "m" (*once_control)
+			: "cr0");
+
+      /* Check if the initializer has already been done.  */
+      if ((oldval & 2) != 0)
+	return 0;
+
+      /* Check if another thread already runs the initializer.	*/
+      if ((oldval & 1) == 0)
+	break;
+
+      /* Check whether the initializer execution was interrupted by a fork.  */
+      if (oldval != newval)
+	break;
+
+      /* Same generation, some other thread was faster. Wait.  */
+      lll_futex_wait (once_control, oldval);
+    }
+
+
+  /* This thread is the first here.  Do the initialization.
+     Register a cleanup handler so that in case the thread gets
+     interrupted the initialization can be restarted.  */
+  pthread_cleanup_push (clear_once_control, once_control);
+
+  init_routine ();
+
+  pthread_cleanup_pop (0);
+
+
+  /* Add one to *once_control to take the bottom 2 bits from 01 to 10.  */
+  __lll_add (once_control, 1);
+
+  /* Wake up all other threads.  */
+  lll_futex_wake (once_control, INT_MAX);
+
+  return 0;
+}
+weak_alias (__pthread_once, pthread_once)
+strong_alias (__pthread_once, __pthread_once_internal)
diff --git a/nptl/sysdeps/unix/sysv/linux/sem_post.c b/nptl/sysdeps/unix/sysv/linux/sem_post.c
new file mode 100644
index 0000000..77defc8
--- /dev/null
+++ b/nptl/sysdeps/unix/sysv/linux/sem_post.c
@@ -0,0 +1,47 @@
+/* sem_post -- post to a POSIX semaphore.  Generic futex-using version.
+   Copyright (C) 2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Paul Mackerras <paulus@au.ibm.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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <errno.h>
+#include <sysdep.h>
+#include <lowlevellock.h>
+#include <internaltypes.h>
+#include <semaphore.h>
+
+#include <shlib-compat.h>
+
+int
+__new_sem_post (sem_t *sem)
+{
+  int *futex = (int *) sem;
+  int err, nr;
+
+  __asm __volatile (__lll_rel_instr ::: "memory");
+  nr = __lll_add (futex, 1);
+  err = lll_futex_wake (futex, nr);
+  if (err == 0)
+    return 0;
+  __set_errno (-err);
+  return -1;
+}
+versioned_symbol (libpthread, __new_sem_post, sem_post, GLIBC_2_1);
+#if SHLIB_COMPAT (libpthread, GLIBC_2_0, GLIBC_2_1)
+strong_alias (__new_sem_post, __old_sem_post)
+compat_symbol (libpthread, __old_sem_post, sem_post, GLIBC_2_0);
+#endif
diff --git a/nptl/sysdeps/unix/sysv/linux/sem_timedwait.c b/nptl/sysdeps/unix/sysv/linux/sem_timedwait.c
new file mode 100644
index 0000000..e1b32f4
--- /dev/null
+++ b/nptl/sysdeps/unix/sysv/linux/sem_timedwait.c
@@ -0,0 +1,87 @@
+/* sem_timedwait -- wait on a semaphore.  Generic futex-using version.
+   Copyright (C) 2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Paul Mackerras <paulus@au.ibm.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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <errno.h>
+#include <sysdep.h>
+#include <lowlevellock.h>
+#include <internaltypes.h>
+#include <semaphore.h>
+
+#include <shlib-compat.h>
+
+
+int
+sem_timedwait (sem_t *sem, const struct timespec *abstime)
+{
+  int *futex = (int *) sem;
+  int val;
+  int err;
+
+  if (*futex > 0)
+    {
+      val = __lll_dec_if_positive (futex);
+      if (val > 0)
+	return 0;
+    }
+
+  err = -EINVAL;
+  if (abstime->tv_nsec >= 1000000000)
+    goto error_return;
+
+  do
+    {
+      struct timeval tv;
+      struct timespec rt;
+      int sec, nsec;
+
+      /* Get the current time.  */
+      __gettimeofday (&tv, NULL);
+
+      /* Compute relative timeout.  */
+      sec = abstime->tv_sec - tv.tv_sec;
+      nsec = abstime->tv_nsec - tv.tv_usec * 1000;
+      if (nsec < 0)
+	{
+	  nsec += 1000000000;
+	  --sec;
+	}
+
+      /* Already timed out?  */
+      err = -ETIMEDOUT;
+      if (sec < 0)
+	goto error_return;
+
+      /* Do wait.  */
+      rt.tv_sec = sec;
+      rt.tv_nsec = nsec;
+      err = lll_futex_timed_wait (futex, 0, &rt);
+      if (err != 0 && err != -EWOULDBLOCK)
+	goto error_return;
+
+      val = __lll_dec_if_positive (futex);
+    }
+  while (val <= 0);
+
+  return 0;
+
+ error_return:
+  __set_errno (-err);
+  return -1;
+}
diff --git a/nptl/sysdeps/unix/sysv/linux/sem_trywait.c b/nptl/sysdeps/unix/sysv/linux/sem_trywait.c
new file mode 100644
index 0000000..a7b60a1
--- /dev/null
+++ b/nptl/sysdeps/unix/sysv/linux/sem_trywait.c
@@ -0,0 +1,50 @@
+/* sem_trywait -- wait on a semaphore.  Generic futex-using version.
+   Copyright (C) 2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Paul Mackerras <paulus@au.ibm.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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <errno.h>
+#include <sysdep.h>
+#include <lowlevellock.h>
+#include <internaltypes.h>
+#include <semaphore.h>
+
+#include <shlib-compat.h>
+
+
+int
+__new_sem_trywait (sem_t *sem)
+{
+  int *futex = (int *) sem;
+  int val;
+
+  if (*futex > 0)
+    {
+      val = __lll_dec_if_positive (futex);
+      if (val > 0)
+	return 0;
+    }
+
+  __set_errno (EAGAIN);
+  return -1;
+}
+versioned_symbol (libpthread, __new_sem_trywait, sem_trywait, GLIBC_2_1);
+#if SHLIB_COMPAT (libpthread, GLIBC_2_0, GLIBC_2_1)
+strong_alias (__new_sem_trywait, __old_sem_trywait)
+compat_symbol (libpthread, __old_sem_trywait, sem_trywait, GLIBC_2_0);
+#endif