1 files changed, 64 insertions, 0 deletions
diff --git a/libgomp/config/linux/s390/futex.h b/libgomp/config/linux/s390/futex.h
new file mode 100644
index 0000000..9b3820c
--- /dev/null
+++ b/libgomp/config/linux/s390/futex.h
@@ -0,0 +1,64 @@
+/* Copyright (C) 2005 Free Software Foundation, Inc.
+   Contributed by Jakub Jelinek <jakub@redhat.com>.
+
+   This file is part of the GNU OpenMP Library (libgomp).
+
+   Libgomp 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.
+
+   Libgomp 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 libgomp; see the file COPYING.LIB.  If not, write to the
+   Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+   MA 02110-1301, USA.  */
+
+/* As a special exception, if you link this library with other files, some
+   of which are compiled with GCC, to produce an executable, this library
+   does not by itself cause the resulting executable to be covered by the
+   GNU General Public License.  This exception does not however invalidate
+   any other reasons why the executable file might be covered by the GNU
+   General Public License.  */
+
+/* Provide target-specific access to the futex system call.  */
+
+#include <sys/syscall.h>
+#define FUTEX_WAIT	0
+#define FUTEX_WAKE	1
+
+static inline void
+sys_futex0 (int *addr, int op, int val)
+{
+  register long int gpr2  __asm__ ("2");
+  register long int gpr3  __asm__ ("3");
+  register long int gpr4  __asm__ ("4");
+  register long int gpr5  __asm__ ("5");
+
+  gpr2 = (long) addr;
+  gpr3 = op;
+  gpr4 = val;
+  gpr5 = 0;
+
+  __asm volatile ("svc %b1"
+		  : "=d" (gpr2)
+		  : "i" (SYS_futex),
+		    "0" (gpr2), "d" (gpr3), "d" (gpr4), "d" (gpr5)
+		  : "memory");
+}
+
+static inline void
+futex_wait (int *addr, int val)
+{
+  sys_futex0 (addr, FUTEX_WAIT, val);
+}
+
+static inline void
+futex_wake (int *addr, int count)
+{
+  sys_futex0 (addr, FUTEX_WAKE, count);
+}