1 files changed, 29 insertions, 0 deletions

diff --git a/arch/tile/include/asm/swab.h b/arch/tile/include/asm/swab.h
new file mode 100644
index 000000000000..25c686a00f1d
--- /dev/null
+++ b/arch/tile/include/asm/swab.h
@@ -0,0 +1,29 @@
+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ *   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, version 2.
+ *
+ *   This program 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, GOOD TITLE or
+ *   NON INFRINGEMENT.  See the GNU General Public License for
+ *   more details.
+ */
+
+#ifndef _ASM_TILE_SWAB_H
+#define _ASM_TILE_SWAB_H
+
+/* Tile gcc is always >= 4.3.0, so we use __builtin_bswap. */
+#define __arch_swab32(x) __builtin_bswap32(x)
+#define __arch_swab64(x) __builtin_bswap64(x)
+
+/* Use the variant that is natural for the wordsize. */
+#ifdef CONFIG_64BIT
+#define __arch_swab16(x) (__builtin_bswap64(x) >> 48)
+#else
+#define __arch_swab16(x) (__builtin_bswap32(x) >> 16)
+#endif
+
+#endif /* _ASM_TILE_SWAB_H */