NPTL: ARC support

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

17 files changed, 1010 insertions, 0 deletions

diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arc/Makefile b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/Makefile
new file mode 100644
index 000000000..729adf6f9
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/Makefile
@@ -0,0 +1,13 @@
+# Makefile for uClibc NPTL
+#
+# Copyright (C) 2005 Steven J. Hill <sjhill@uclibc.org>
+#
+# Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball.
+#
+
+top_srcdir=../../../../../../../
+top_builddir=../../../../../../../
+all: objs
+include $(top_builddir)Rules.mak
+include Makefile.arch
+include $(top_srcdir)Makerules
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arc/Makefile.arch b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/Makefile.arch
new file mode 100644
index 000000000..25e6fadbf
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/Makefile.arch
@@ -0,0 +1,32 @@
+# Makefile for uClibc NPTL
+#
+# Copyright (C) 2006 Steven J. Hill <sjhill@uclibc.org>
+#
+# Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball.
+#
+
+libpthread_linux_arch_SSRC = pt-vfork.S
+libpthread_linux_arch_CSRC = pthread_once.c lowlevellock.c \
+	pt-__syscall_rt_sigaction.c pt-__syscall_error.c
+
+libc_linux_arch_CSRC = fork.c libc-lowlevellock.c
+libc_linux_arch_SSRC = clone.S vfork.S
+libc_linux_arch_SSRC-OMIT = waitpid.S
+
+CFLAGS-pthread_once.c = -DNOT_IN_libc -DIS_IN_libpthread
+CFLAGS-pt-__syscall_rt_sigaction.c = -DNOT_IN_libc -DIS_IN_libpthread
+CFLAGS-lowlevellock.c = -DNOT_IN_libc -DIS_IN_libpthread
+CFLAGS-pt-__syscall_error.c =  -DNOT_IN_libc -DIS_IN_libpthread
+ASFLAGS-pt-vfork.S = -DNOT_IN_libc -DIS_IN_libpthread
+
+ASFLAGS-vfork.S = -DIS_IN_libc -DNOT_IN_libpthread
+ASFLAGS-clone.S = -DIS_IN_libc -DNOT_IN_libpthread
+
+ifeq ($(UCLIBC_HAS_STDIO_FUTEXES),y)
+CFLAGS-fork.c = -D__USE_STDIO_FUTEXES__
+endif
+CFLAGS-OMIT-fork.c = -DNOT_IN_libc -DIS_IN_libpthread
+CFLAGS-OMIT-libc-lowlevellock.c = -DNOT_IN_libc -DIS_IN_libpthread
+# We always compile it in arm mode because of SAVE_PID macro
+# This macro should be alternatively implemented in THUMB
+# assembly.
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arc/bits/pthreadtypes.h b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/bits/pthreadtypes.h
new file mode 100644
index 000000000..e1b115c8c
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/bits/pthreadtypes.h
@@ -0,0 +1,181 @@
+/* Copyright (C) 2002, 2003, 2004, 2005, 2006 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.  */
+
+#ifndef _BITS_PTHREADTYPES_H
+#define _BITS_PTHREADTYPES_H	1
+
+#include <endian.h>
+
+#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_COND_COMPAT_T 12
+#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
+
+
+/* Thread identifiers.  The structure of the attribute type is not
+   exposed on purpose.  */
+typedef unsigned long int pthread_t;
+
+
+typedef union
+{
+  char __size[__SIZEOF_PTHREAD_ATTR_T];
+  long int __align;
+} pthread_attr_t;
+
+
+typedef struct __pthread_internal_slist
+{
+  struct __pthread_internal_slist *__next;
+} __pthread_slist_t;
+
+
+/* Data structures for mutex handling.  The structure of the attribute
+   type is not exposed on purpose.  */
+typedef union
+{
+  struct __pthread_mutex_s
+  {
+    int __lock;
+    unsigned int __count;
+    int __owner;
+    /* KIND must stay at this position in the structure to maintain
+       binary compatibility.  */
+    int __kind;
+    unsigned int __nusers;
+    __extension__ union
+    {
+      int __spins;
+      __pthread_slist_t __list;
+    };
+  } __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 not exposed on purpose.  */
+typedef union
+{
+  struct
+  {
+    int __lock;
+    unsigned int __futex;
+    __extension__ unsigned long long int __total_seq;
+    __extension__ unsigned long long int __wakeup_seq;
+    __extension__ unsigned long long int __woken_seq;
+    void *__mutex;
+    unsigned int __nwaiters;
+    unsigned int __broadcast_seq;
+  } __data;
+  char __size[__SIZEOF_PTHREAD_COND_T];
+  __extension__ long 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;
+
+
+#if defined __USE_UNIX98 || defined __USE_XOPEN2K
+/* Data structure for read-write lock variable handling.  The
+   structure of the attribute type is not exposed on purpose.  */
+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;
+#if __BYTE_ORDER == __BIG_ENDIAN
+    unsigned char __pad1;
+    unsigned char __pad2;
+    unsigned char __shared;
+    /* FLAGS must stay at this position in the structure to maintain
+       binary compatibility.  */
+    unsigned char __flags;
+#else
+    /* FLAGS must stay at this position in the structure to maintain
+       binary compatibility.  */
+    unsigned char __flags;
+    unsigned char __shared;
+    unsigned char __pad1;
+    unsigned char __pad2;
+#endif
+    int __writer;
+  } __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/libpthread/nptl/sysdeps/unix/sysv/linux/arc/bits/semaphore.h b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/bits/semaphore.h
new file mode 100644
index 000000000..dadfac2af
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/bits/semaphore.h
@@ -0,0 +1,35 @@
+/* Copyright (C) 2002, 2005, 2007 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.  */
+
+#ifndef _SEMAPHORE_H
+# error "Never use <bits/semaphore.h> directly; include <semaphore.h> instead."
+#endif
+
+
+#define __SIZEOF_SEM_T	16
+
+
+/* Value returned if `sem_open' failed.  */
+#define SEM_FAILED      ((sem_t *) 0)
+
+
+typedef union
+{
+  char __size[__SIZEOF_SEM_T];
+  long int __align;
+} sem_t;
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arc/clone.S b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/clone.S
new file mode 100644
index 000000000..5fd1de3c2
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/clone.S
@@ -0,0 +1,10 @@
+/*
+ * Copyright (C) 2013 Synopsys, Inc. (www.synopsys.com)
+ *
+ * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball.
+ */
+
+#define RESET_PID
+#include <tls.h>
+#include <tcb-offsets.h>
+#include "../../../../../../../libc/sysdeps/linux/arc/clone.S"
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arc/createthread.c b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/createthread.c
new file mode 100644
index 000000000..78719015f
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/createthread.c
@@ -0,0 +1,25 @@
+/* Copyright (C) 2005 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.  */
+
+/* Internal clone callers pass struct pthread, but thread TP register
+ * needs to point to TLS block (struct tcbhead) which is right after */
+
+#define TLS_VALUE (pd + 1)
+
+/* Get the real implementation.	 */
+#include <sysdeps/pthread/createthread.c>
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arc/fork.c b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/fork.c
new file mode 100644
index 000000000..2578af6f4
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/fork.c
@@ -0,0 +1,30 @@
+/* Copyright (C) 2005 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Phil Blundell <pb@nexus.co.uk>, 2005
+
+   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 <sched.h>
+#include <signal.h>
+#include <sysdep.h>
+#include <tls.h>
+
+
+#define ARCH_FORK()							\
+  INLINE_SYSCALL (clone, 5,						\
+		  CLONE_CHILD_SETTID | CLONE_CHILD_CLEARTID | SIGCHLD,	\
+		  NULL, NULL, NULL, &THREAD_SELF->tid)
+
+#include "../fork.c"
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arc/libc-lowlevellock.c b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/libc-lowlevellock.c
new file mode 100644
index 000000000..b19282281
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/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/libpthread/nptl/sysdeps/unix/sysv/linux/arc/lowlevellock.c b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/lowlevellock.c
new file mode 100644
index 000000000..1aa79609a
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/lowlevellock.c
@@ -0,0 +1,126 @@
+/* low level locking for pthread library.  Generic futex-using version.
+   Copyright (C) 2003, 2007 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, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <sysdep.h>
+#include <lowlevellock.h>
+#include <sys/time.h>
+#include <tls.h>
+#include <tcb-offsets.h>
+
+
+void
+__lll_lock_wait_private (int *futex)
+{
+  if (*futex == 2)
+    lll_futex_wait (futex, 2, LLL_PRIVATE);
+
+  while (atomic_exchange_acq (futex, 2) != 0)
+    lll_futex_wait (futex, 2, LLL_PRIVATE);
+}
+
+
+/* These functions don't get included in libc.so  */
+#ifdef IS_IN_libpthread
+void
+__lll_lock_wait (int *futex, int private)
+{
+  if (*futex == 2)
+    lll_futex_wait (futex, 2, private);
+
+  while (atomic_exchange_acq (futex, 2) != 0)
+    lll_futex_wait (futex, 2, private);
+}
+
+
+int
+__lll_timedlock_wait (int *futex, const struct timespec *abstime, int private)
+{
+  /* Reject invalid timeouts.  */
+  if (abstime->tv_nsec < 0 || abstime->tv_nsec >= 1000000000)
+    return EINVAL;
+
+  /* Try locking.  */
+  while (atomic_exchange_acq (futex, 2) != 0)
+    {
+      struct timeval tv;
+
+      /* Get the current time.  */
+      (void) gettimeofday (&tv, NULL);
+
+      /* Compute relative timeout.  */
+      struct timespec rt;
+      rt.tv_sec = abstime->tv_sec - tv.tv_sec;
+      rt.tv_nsec = abstime->tv_nsec - tv.tv_usec * 1000;
+      if (rt.tv_nsec < 0)
+	{
+	  rt.tv_nsec += 1000000000;
+	  --rt.tv_sec;
+	}
+
+      if (rt.tv_sec < 0)
+	return ETIMEDOUT;
+
+      /* Wait.  */
+      lll_futex_timed_wait (futex, 2, &rt, private);
+    }
+
+  return 0;
+}
+
+
+int
+__lll_timedwait_tid (int *tidp, const struct timespec *abstime)
+{
+  int tid;
+
+  if (abstime->tv_nsec < 0 || abstime->tv_nsec >= 1000000000)
+    return EINVAL;
+
+  /* Repeat until thread terminated.  */
+  while ((tid = *tidp) != 0)
+    {
+      struct timeval tv;
+      struct timespec rt;
+
+      /* Get the current time.  */
+      (void) __gettimeofday (&tv, NULL);
+
+      /* Compute relative timeout.  */
+      rt.tv_sec = abstime->tv_sec - tv.tv_sec;
+      rt.tv_nsec = abstime->tv_nsec - tv.tv_usec * 1000;
+      if (rt.tv_nsec < 0)
+	{
+	  rt.tv_nsec += 1000000000;
+	  --rt.tv_sec;
+	}
+
+      /* Already timed out?  */
+      if (rt.tv_sec < 0)
+	return ETIMEDOUT;
+
+      /* Wait until thread terminates.  The kernel so far does not use
+	 the private futex operations for this.  */
+      if (lll_futex_timed_wait (tidp, tid, &rt, LLL_SHARED) == -ETIMEDOUT)
+	return ETIMEDOUT;
+    }
+
+  return 0;
+}
+#endif
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arc/lowlevellock.h b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/lowlevellock.h
new file mode 100644
index 000000000..99ada5d50
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/lowlevellock.h
@@ -0,0 +1,279 @@
+/* Copyright (C) 2005, 2006, 2007, 2008, 2009 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.  */
+
+#ifndef _LOWLEVELLOCK_H
+#define _LOWLEVELLOCK_H	1
+
+#include <time.h>
+#include <sys/param.h>
+#include <bits/pthreadtypes.h>
+#include <atomic.h>
+#include <sysdep.h>
+#include <bits/kernel-features.h>
+
+#define FUTEX_WAIT		0
+#define FUTEX_WAKE		1
+#define FUTEX_REQUEUE		3
+#define FUTEX_CMP_REQUEUE	4
+#define FUTEX_WAKE_OP		5
+#define FUTEX_OP_CLEAR_WAKE_IF_GT_ONE	((4 << 24) | 1)
+#define FUTEX_LOCK_PI		6
+#define FUTEX_UNLOCK_PI		7
+#define FUTEX_TRYLOCK_PI	8
+#define FUTEX_WAIT_BITSET	9
+#define FUTEX_WAKE_BITSET	10
+#define FUTEX_PRIVATE_FLAG	128
+#define FUTEX_CLOCK_REALTIME	256
+
+#define FUTEX_BITSET_MATCH_ANY	0xffffffff
+
+/* Values for 'private' parameter of locking macros.  Yes, the
+   definition seems to be backwards.  But it is not.  The bit will be
+   reversed before passing to the system call.  */
+#define LLL_PRIVATE	0
+#define LLL_SHARED	FUTEX_PRIVATE_FLAG
+
+
+#if !defined NOT_IN_libc || defined IS_IN_rtld
+/* In libc.so or ld.so all futexes are private.  */
+# ifdef __ASSUME_PRIVATE_FUTEX
+#  define __lll_private_flag(fl, private) \
+  ((fl) | FUTEX_PRIVATE_FLAG)
+# else
+#  define __lll_private_flag(fl, private) \
+  ((fl) | THREAD_GETMEM (THREAD_SELF, header.private_futex))
+# endif
+#else
+# ifdef __ASSUME_PRIVATE_FUTEX
+#  define __lll_private_flag(fl, private) \
+  (((fl) | FUTEX_PRIVATE_FLAG) ^ (private))
+# else
+#  define __lll_private_flag(fl, private) \
+  (__builtin_constant_p (private)					      \
+   ? ((private) == 0							      \
+      ? ((fl) | THREAD_GETMEM (THREAD_SELF, header.private_futex))	      \
+      : (fl))								      \
+   : ((fl) | (((private) ^ FUTEX_PRIVATE_FLAG)				      \
+	      & THREAD_GETMEM (THREAD_SELF, header.private_futex))))
+# endif
+#endif
+
+
+#define lll_futex_wait(futexp, val, private) \
+  lll_futex_timed_wait(futexp, val, NULL, private)
+
+#define lll_futex_timed_wait(futexp, val, timespec, private) \
+  ({									      \
+    INTERNAL_SYSCALL_DECL (__err);					      \
+    long int __ret;							      \
+    __ret = INTERNAL_SYSCALL (futex, __err, 4, (futexp),		      \
+			      __lll_private_flag (FUTEX_WAIT, private),	      \
+			      (val), (timespec));			      \
+    __ret;								      \
+  })
+
+#define lll_futex_wake(futexp, nr, private) \
+  ({									      \
+    INTERNAL_SYSCALL_DECL (__err);					      \
+    long int __ret;							      \
+    __ret = INTERNAL_SYSCALL (futex, __err, 4, (futexp),		      \
+			      __lll_private_flag (FUTEX_WAKE, private),	      \
+			      (nr), 0);					      \
+    __ret;								      \
+  })
+
+#define lll_robust_dead(futexv, private) \
+  do									      \
+    {									      \
+      int *__futexp = &(futexv);					      \
+      atomic_or (__futexp, FUTEX_OWNER_DIED);				      \
+      lll_futex_wake (__futexp, 1, private);				      \
+    }									      \
+  while (0)
+
+/* Returns non-zero if error happened, zero if success.  */
+#define lll_futex_requeue(futexp, nr_wake, nr_move, mutex, val, private) \
+  ({									      \
+    INTERNAL_SYSCALL_DECL (__err);					      \
+    long int __ret;							      \
+    __ret = INTERNAL_SYSCALL (futex, __err, 6, (futexp),		      \
+			      __lll_private_flag (FUTEX_CMP_REQUEUE, private),\
+			      (nr_wake), (nr_move), (mutex), (val));	      \
+    INTERNAL_SYSCALL_ERROR_P (__ret, __err);				      \
+  })
+
+
+/* Returns non-zero if error happened, zero if success.  */
+#define lll_futex_wake_unlock(futexp, nr_wake, nr_wake2, futexp2, private) \
+  ({									      \
+    INTERNAL_SYSCALL_DECL (__err);					      \
+    long int __ret;							      \
+    __ret = INTERNAL_SYSCALL (futex, __err, 6, (futexp),		      \
+			      __lll_private_flag (FUTEX_WAKE_OP, private),    \
+			      (nr_wake), (nr_wake2), (futexp2),		      \
+			      FUTEX_OP_CLEAR_WAKE_IF_GT_ONE);		      \
+    INTERNAL_SYSCALL_ERROR_P (__ret, __err);				      \
+  })
+
+
+#define lll_trylock(lock)	\
+  atomic_compare_and_exchange_val_acq(&(lock), 1, 0)
+
+#define lll_cond_trylock(lock)	\
+  atomic_compare_and_exchange_val_acq(&(lock), 2, 0)
+
+#define __lll_robust_trylock(futex, id) \
+  (atomic_compare_and_exchange_val_acq (futex, id, 0) != 0)
+#define lll_robust_trylock(lock, id) \
+  __lll_robust_trylock (&(lock), id)
+
+extern void __lll_lock_wait_private (int *futex) attribute_hidden;
+extern void __lll_lock_wait (int *futex, int private) attribute_hidden;
+extern int __lll_robust_lock_wait (int *futex, int private) attribute_hidden;
+
+#define __lll_lock(futex, private)					      \
+  ((void) ({								      \
+    int *__futex = (futex);						      \
+    if (unlikely(atomic_compare_and_exchange_val_acq (__futex, 1, 0)))        \
+      {									      \
+	if (__builtin_constant_p (private) && (private) == LLL_PRIVATE)	      \
+	  __lll_lock_wait_private (__futex);				      \
+	else								      \
+	  __lll_lock_wait (__futex, private);				      \
+      }									      \
+  }))
+#define lll_lock(futex, private) __lll_lock (&(futex), private)
+
+
+#define __lll_robust_lock(futex, id, private)				      \
+  ({									      \
+    int *__futex = (futex);						      \
+    int __val = 0;							      \
+									      \
+    if (unlikely(atomic_compare_and_exchange_bool_acq (__futex, id, 0)))      \
+      __val = __lll_robust_lock_wait (__futex, private);		      \
+    __val;								      \
+  })
+#define lll_robust_lock(futex, id, private) \
+  __lll_robust_lock (&(futex), id, private)
+
+
+#define __lll_cond_lock(futex, private)					      \
+  ((void) ({								      \
+    int *__futex = (futex);						      \
+    if (unlikely(atomic_exchange_acq (__futex, 2)))			      \
+      __lll_lock_wait (__futex, private);				      \
+  }))
+#define lll_cond_lock(futex, private) __lll_cond_lock (&(futex), private)
+
+
+#define lll_robust_cond_lock(futex, id, private) \
+  __lll_robust_lock (&(futex), (id) | FUTEX_WAITERS, private)
+
+
+extern int __lll_timedlock_wait (int *futex, const struct timespec *,
+				 int private) attribute_hidden;
+extern int __lll_robust_timedlock_wait (int *futex, const struct timespec *,
+					int private) attribute_hidden;
+
+#define __lll_timedlock(futex, abstime, private)			      \
+  ({									      \
+     int *__futex = (futex);						      \
+     int __val = 0;							      \
+									      \
+     if (unlikely(atomic_exchange_acq (__futex, 1)))	                      \
+       __val = __lll_timedlock_wait (__futex, abstime, private);	      \
+     __val;								      \
+  })
+#define lll_timedlock(futex, abstime, private) \
+  __lll_timedlock (&(futex), abstime, private)
+
+
+#define __lll_robust_timedlock(futex, abstime, id, private)		      \
+  ({									      \
+    int *__futex = (futex);						      \
+    int __val = 0;							      \
+									      \
+    if (unlikely(atomic_compare_and_exchange_bool_acq (__futex, id, 0)))      \
+      __val = __lll_robust_timedlock_wait (__futex, abstime, private);	      \
+    __val;								      \
+  })
+#define lll_robust_timedlock(futex, abstime, id, private) \
+  __lll_robust_timedlock (&(futex), abstime, id, private)
+
+
+#define __lll_unlock(futex, private) \
+  (void)							\
+    ({ int *__futex = (futex);					\
+       int __oldval = atomic_exchange_rel (__futex, 0);		\
+       if (unlikely(__oldval > 1))			        \
+	 lll_futex_wake (__futex, 1, private);			\
+    })
+#define lll_unlock(futex, private) __lll_unlock(&(futex), private)
+
+
+#define __lll_robust_unlock(futex, private) \
+  (void)							\
+    ({ int *__futex = (futex);					\
+       int __oldval = atomic_exchange_rel (__futex, 0);		\
+       if (unlikely(__oldval & FUTEX_WAITERS))	        	\
+	 lll_futex_wake (__futex, 1, private);			\
+    })
+#define lll_robust_unlock(futex, private) \
+  __lll_robust_unlock(&(futex), private)
+
+
+#define lll_islocked(futex) \
+  (futex != 0)
+
+
+/* Our internal lock implementation is identical to the binary-compatible
+   mutex implementation. */
+
+/* Initializers for lock.  */
+#define LLL_LOCK_INITIALIZER		(0)
+#define LLL_LOCK_INITIALIZER_LOCKED	(1)
+
+/* The states of a lock are:
+    0  -  untaken
+    1  -  taken by one user
+   >1  -  taken by more users */
+
+/* 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, LLL_SHARED);\
+  } 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;						\
+  })
+
+#endif	/* lowlevellock.h */
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arc/pt-__syscall_error.c b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/pt-__syscall_error.c
new file mode 100644
index 000000000..8002e65c3
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/pt-__syscall_error.c
@@ -0,0 +1,7 @@
+/*
+ * Copyright (C) 2013 Synopsys, Inc. (www.synopsys.com)
+ *
+ * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball.
+ */
+
+#include <../../../../../../../libc/sysdeps/linux/arc/__syscall_error.c>
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arc/pt-__syscall_rt_sigaction.c b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/pt-__syscall_rt_sigaction.c
new file mode 100644
index 000000000..346651826
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/pt-__syscall_rt_sigaction.c
@@ -0,0 +1,7 @@
+/*
+ * Copyright (C) 2013 Synopsys, Inc. (www.synopsys.com)
+ *
+ * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball.
+ */
+
+#include <../../../../../../../libc/sysdeps/linux/arc/sigaction.c>
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arc/pt-gettimeofday.c b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/pt-gettimeofday.c
new file mode 100644
index 000000000..d9fc3531f
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/pt-gettimeofday.c
@@ -0,0 +1,11 @@
+/*
+ * Copyright (C) 2013 Synopsys, Inc. (www.synopsys.com)
+ *
+ * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball.
+ */
+
+#include <sys/syscall.h>
+#include <sys/time.h>
+
+int gettimeofday (struct timeval *, struct timezone *) attribute_hidden;
+_syscall2(int, gettimeofday, struct timeval *, tv, struct timezone *, tz);
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arc/pt-vfork.S b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/pt-vfork.S
new file mode 100644
index 000000000..f222dca43
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/pt-vfork.S
@@ -0,0 +1,7 @@
+/*
+ * Copyright (C) 2013 Synopsys, Inc. (www.synopsys.com)
+ *
+ * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball.
+ */
+
+#include "vfork.S"
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arc/pthread_once.c b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/pthread_once.c
new file mode 100644
index 000000000..e977a7d0c
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/pthread_once.c
@@ -0,0 +1,100 @@
+/* Copyright (C) 2004, 2005 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 "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, LLL_PRIVATE);
+}
+
+int
+attribute_protected
+__pthread_once (pthread_once_t *once_control, void (*init_routine) (void))
+{
+  for (;;)
+    {
+      int oldval;
+      int newval;
+
+      /* Pseudo code:
+	 newval = __fork_generation | 1;
+	 oldval = *once_control;
+	 if ((oldval & 2) == 0)
+	   *once_control = newval;
+	 Do this atomically.
+      */
+      do
+	{
+	  newval = __fork_generation | 1;
+	  oldval = *once_control;
+	  if (oldval & 2)
+	    break;
+	} while (atomic_compare_and_exchange_val_acq (once_control, newval, oldval) != oldval);
+
+      /* 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, LLL_PRIVATE);
+    }
+
+  /* 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);
+
+  /* Say that the initialisation is done.  */
+  *once_control = __fork_generation | 2;
+
+  /* Wake up all other threads.  */
+  lll_futex_wake (once_control, INT_MAX, LLL_PRIVATE);
+
+  return 0;
+}
+weak_alias (__pthread_once, pthread_once)
+strong_alias (__pthread_once, __pthread_once_internal)
+
+#if defined(__USING_SJLJ_EXCEPTIONS__) && !defined(__PIC__)
+/* When statically linked, if pthread_create is used, this file
+   will be brought in.  The exception handling code in GCC assumes
+   that if pthread_create is available, so are these.  */
+const void *include_pthread_getspecific attribute_hidden = pthread_getspecific;
+const void *include_pthread_setspecific attribute_hidden = pthread_setspecific;
+const void *include_pthread_key_create attribute_hidden = pthread_key_create;
+#endif
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arc/sysdep-cancel.h b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/sysdep-cancel.h
new file mode 100644
index 000000000..cddd754a8
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/sysdep-cancel.h
@@ -0,0 +1,115 @@
+/*
+ * Copyright (C) 2013 Synopsys, Inc. (www.synopsys.com)
+ *
+ * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball.
+ */
+
+#include <tls.h>
+#include <sysdep.h>
+#ifndef __ASSEMBLER__
+# include <pthreadP.h>
+#endif
+
+#if !defined NOT_IN_libc || defined IS_IN_libpthread || defined IS_IN_librt
+
+#ifdef __ASSEMBLER__
+
+#undef ret
+#define ret
+
+# undef PSEUDO
+# define PSEUDO(name, syscall_name, nargs)			\
+   /* vanilla version */				`	\
+   ENTRY(name##_nocancel)				`	\
+      DO_CALL (__NR_##syscall_name)			`	\
+      jls  [blink]					`	\
+      b  __syscall_error@plt				`	\
+   END(name##_nocancel)					`	\
+   /* thread cancellation variant */			`	\
+   ENTRY(name)			    			`	\
+      SINGLE_THREAD_P					`	\
+      bz name##_nocancel				`	\
+      DOCARGS_##nargs  /* stash syscall args */		`	\
+      CENABLE          /* call enable_asynccancel */	`	\
+      mov r9, r0       /* Safe-keep mask */ 		`	\
+      UNDOCARGS_##nargs	/* restore syscall args */	`	\
+      DO_CALL (__NR_##syscall_name)			`	\
+      push  r0         /* save syscall return value */	`	\
+      mov   r0, r9     /* prep mask for disable_asynccancel */  `	\
+      CDISABLE	`	\
+      pop  r0           /* get syscall ret value back */  ` \
+      cmp  r0, -1024	`	\
+      jls  [blink]					`	\
+      b  __syscall_error@plt				`	\
+   END(name)
+
+#undef	PSEUDO_END
+#define	PSEUDO_END(name)	\
+
+# ifdef IS_IN_libpthread
+#  define CENABLE	bl __pthread_enable_asynccancel
+#  define CDISABLE	bl __pthread_disable_asynccancel
+#  define __local_multiple_threads __pthread_multiple_threads
+# elif !defined NOT_IN_libc
+#  define CENABLE	bl __libc_enable_asynccancel
+#  define CDISABLE	bl __libc_disable_asynccancel
+#  define __local_multiple_threads __libc_multiple_threads
+# elif defined IS_IN_librt
+#  define CENABLE	bl __librt_enable_asynccancel
+#  define CDISABLE	bl __librt_disable_asynccancel
+# else
+#  error Unsupported library
+# endif
+
+#define DO_CALL(num)		\
+	mov	r8, num		`	\
+	ARC_TRAP_INSN		`	\
+	cmp r0, -1024
+
+.macro push reg
+	st.a \reg, [sp, -4]
+.endm
+
+.macro pop reg
+	ld.ab \reg, [sp, 4]
+.endm
+
+#define DOCARGS_0	push blink
+#define UNDOCARGS_0	pop  blink
+
+#define DOCARGS_1	DOCARGS_0`	push r0
+#define UNDOCARGS_1			pop  r0`	UNDOCARGS_0
+
+#define DOCARGS_2	DOCARGS_1`	push r1
+#define UNDOCARGS_2			pop  r1`	UNDOCARGS_1
+
+#define DOCARGS_3	DOCARGS_2`	push r2
+#define UNDOCARGS_3			pop  r2`	UNDOCARGS_2
+
+#define DOCARGS_4	DOCARGS_3`	push r3
+#define UNDOCARGS_4			pop  r3`	UNDOCARGS_3
+
+#define DOCARGS_5	DOCARGS_4`	push r4
+#define UNDOCARGS_5			pop  r4`	UNDOCARGS_4
+
+#define DOCARGS_6	DOCARGS_5`	push r5
+#define UNDOCARGS_6			pop  r5`	UNDOCARGS_5
+
+#define DOCARGS_7	DOCARGS_6`	push r6
+#define UNDOCARGS_7			pop  r6`	UNDOCARGS_6
+
+#  define SINGLE_THREAD_P 			\
+    THREAD_SELF r1   `				\
+    ld	   r2, [r1, MULTIPLE_THREADS_OFFSET]`	\
+    cmp    r2, 0
+
+/*    ld	   r2, [r1, -TLS_PRE_TCB_SIZE + MULTIPLE_THREADS_OFFSET] */
+#else	/* !__ASSEMBLER__ */
+
+/* TBD: Can use @__local_multiple_threads for libc/libpthread like ARM */
+#   define SINGLE_THREAD_P	\
+    likely(THREAD_GETMEM (THREAD_SELF, header.multiple_threads) == 0)
+
+#endif /* __ASSEMBLER__ */
+
+#endif
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arc/vfork.S b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/vfork.S
new file mode 100644
index 000000000..d29e05a8a
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/vfork.S
@@ -0,0 +1,11 @@
+/*
+ * Copyright (C) 2013 Synopsys, Inc. (www.synopsys.com)
+ *
+ * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball.
+ */
+
+#define SAVE_PID
+#define RESTORE_PID
+#include <tls.h>
+#include <tcb-offsets.h>
+#include "../../../../../../../libc/sysdeps/linux/arc/vfork.S"