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authorDavid Woodhouse <David.Woodhouse@intel.com>2008-10-13 17:13:56 +0100
committerDavid Woodhouse <David.Woodhouse@intel.com>2008-10-13 17:13:56 +0100
commite758936e02700ff88a0b08b722a3847b95283ef2 (patch)
tree50c919bef1b459a778b85159d5929de95b6c4a01 /arch/mips/include/asm/byteorder.h
parent239cfbde1f5843c4a24199f117d5f67f637d72d5 (diff)
parent4480f15b3306f43bbb0310d461142b4e897ca45b (diff)
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts: include/asm-x86/statfs.h
Diffstat (limited to 'arch/mips/include/asm/byteorder.h')
-rw-r--r--arch/mips/include/asm/byteorder.h76
1 files changed, 76 insertions, 0 deletions
diff --git a/arch/mips/include/asm/byteorder.h b/arch/mips/include/asm/byteorder.h
new file mode 100644
index 00000000000..fe7dc2d59b6
--- /dev/null
+++ b/arch/mips/include/asm/byteorder.h
@@ -0,0 +1,76 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 1996, 99, 2003 by Ralf Baechle
+ */
+#ifndef _ASM_BYTEORDER_H
+#define _ASM_BYTEORDER_H
+
+#include <linux/compiler.h>
+#include <asm/types.h>
+
+#ifdef __GNUC__
+
+#ifdef CONFIG_CPU_MIPSR2
+
+static __inline__ __attribute_const__ __u16 ___arch__swab16(__u16 x)
+{
+ __asm__(
+ " wsbh %0, %1 \n"
+ : "=r" (x)
+ : "r" (x));
+
+ return x;
+}
+#define __arch__swab16(x) ___arch__swab16(x)
+
+static __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 x)
+{
+ __asm__(
+ " wsbh %0, %1 \n"
+ " rotr %0, %0, 16 \n"
+ : "=r" (x)
+ : "r" (x));
+
+ return x;
+}
+#define __arch__swab32(x) ___arch__swab32(x)
+
+#ifdef CONFIG_CPU_MIPS64_R2
+
+static __inline__ __attribute_const__ __u64 ___arch__swab64(__u64 x)
+{
+ __asm__(
+ " dsbh %0, %1 \n"
+ " dshd %0, %0 \n"
+ " drotr %0, %0, 32 \n"
+ : "=r" (x)
+ : "r" (x));
+
+ return x;
+}
+
+#define __arch__swab64(x) ___arch__swab64(x)
+
+#endif /* CONFIG_CPU_MIPS64_R2 */
+
+#endif /* CONFIG_CPU_MIPSR2 */
+
+#if !defined(__STRICT_ANSI__) || defined(__KERNEL__)
+# define __BYTEORDER_HAS_U64__
+# define __SWAB_64_THRU_32__
+#endif
+
+#endif /* __GNUC__ */
+
+#if defined(__MIPSEB__)
+# include <linux/byteorder/big_endian.h>
+#elif defined(__MIPSEL__)
+# include <linux/byteorder/little_endian.h>
+#else
+# error "MIPS, but neither __MIPSEB__, nor __MIPSEL__???"
+#endif
+
+#endif /* _ASM_BYTEORDER_H */