1 files changed, 50 insertions, 0 deletions
diff --git a/libitm/config/linux/sh/futex_bits.h b/libitm/config/linux/sh/futex_bits.h
new file mode 100644
index 00000000000..f9381ed6cda
--- /dev/null
+++ b/libitm/config/linux/sh/futex_bits.h
@@ -0,0 +1,50 @@
+/* Copyright (C) 2011 Free Software Foundation, Inc.
+
+   This file is part of the GNU Transactional Memory Library (libitm).
+
+   Libitm is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   Libitm 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 General Public License for
+   more details.
+
+   Under Section 7 of GPL version 3, you are granted additional
+   permissions described in the GCC Runtime Library Exception, version
+   3.1, as published by the Free Software Foundation.
+
+   You should have received a copy of the GNU General Public License and
+   a copy of the GCC Runtime Library Exception along with this program;
+   see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+/* Provide target-specific access to the futex system call.  */
+
+#include <sys/syscall.h>
+
+/* 4 instruction cycles not accessing cache and TLB are needed after
+   trapa instruction to avoid an SH-4 silicon bug.  */
+
+#define SYSCALL_WITH_INST_PAD "\
+       trapa #0x14; or r0,r0; or r0,r0; or r0,r0; or r0,r0; or r0,r0"
+
+static inline long
+sys_futex0 (int *addr, long op, long val)
+{
+  int __status;
+  register long __r3 asm ("r3") = SYS_futex;
+  register long __r4 asm ("r4") = (long) addr;
+  register long __r5 asm ("r5") = op;
+  register long __r6 asm ("r6") = val;
+  register long __r7 asm ("r7") = 0;
+
+  __asm __volatile (SYSCALL_WITH_INST_PAD
+		    : "=z" (__status)
+		    : "r" (__r3), "r" (__r4), "r" (__r5),
+		    "r" (__r6), "r" (__r7)
+		    : "memory", "t");
+  return __status;
+}