OpenRISC: Headers

Signed-off-by: Jonas Bonn <jonas@southpole.se>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 32 insertions, 0 deletions

diff --git a/arch/openrisc/include/asm/bitops/ffs.h b/arch/openrisc/include/asm/bitops/ffs.h
new file mode 100644
index 000000000000..9de46246ebc7
--- /dev/null
+++ b/arch/openrisc/include/asm/bitops/ffs.h
@@ -0,0 +1,32 @@
+/*
+ * OpenRISC Linux
+ *
+ * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
+ *
+ * This program 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 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef __ASM_OPENRISC_FFS_H
+#define __ASM_OPENRISC_FFS_H
+
+#ifdef CONFIG_OPENRISC_HAVE_INST_FF1
+
+static inline int ffs(int x)
+{
+        int ret;
+
+        __asm__ ("l.ff1 %0,%1"
+                 : "=r" (ret)
+                 : "r" (x));
+
+        return ret;
+}
+
+#else
+#include <asm-generic/bitops/ffs.h>
+#endif
+
+#endif /* __ASM_OPENRISC_FFS_H */