1 files changed, 90 insertions, 0 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/s390/lowlevelmutex.c b/nptl/sysdeps/unix/sysv/linux/s390/lowlevelmutex.c
new file mode 100644
index 0000000000..3f1889bc77
--- /dev/null
+++ b/nptl/sysdeps/unix/sysv/linux/s390/lowlevelmutex.c
@@ -0,0 +1,90 @@
+/* Copyright (C) 2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Martin Schwidefsky <schwidefsky@de.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>
+
+
+void
+___lll_mutex_lock (futex, newval)
+     int *futex;
+     int newval;
+{
+  int oldval;
+
+  do
+    {
+      lll_futex_wait (futex, newval);
+      lll_compare_and_swap (futex, oldval, newval, "lr %2,%1; ahi %2,1");
+    }
+  while (oldval != 0);
+
+  *futex = 2;
+}
+hidden_proto (___lll_mutex_lock)
+
+
+int
+___lll_mutex_timedlock (futex, abstime, newval)
+     int *futex;
+     const struct timespec *abstime;
+     int newval;
+{
+  /* Reject invalid timeouts.  */
+  if (abstime->tv_nsec >= 1000000000)
+    return EINVAL;
+
+  int oldval;
+  do
+    {
+      /* Get the current time.  */
+      struct timeval tv;
+      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;
+	}
+      /* Already timed out?  */
+      if (rt.tv_sec < 0)
+	return ETIMEDOUT;
+
+      /* Wait.  */
+      int err = lll_futex_timed_wait (futex, newval, &rt);
+
+      /* If timed out return with an appropriate error.  */
+      if (err == -ETIMEDOUT)
+	return ETIMEDOUT;
+
+      /* XXX oldval in undefined !!! */
+      lll_compare_and_swap (futex, oldval, newval, "lr %2,%1; ahi %2,1");
+    }
+  while (oldval != 0);
+
+  *futex = 2;
+
+  return 0;
+}
+hidden_proto (___lll_mutex_timedlock)