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authorLinus Torvalds <torvalds@linux-foundation.org>2008-08-01 10:53:43 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-08-01 10:53:43 -0700
commit00e9028a95fb8a4d79f2fb695a853f33ea7d3b57 (patch)
tree2dea2ae498a6ce57de8890e87185aca5e9f3ad2d /arch/sh/include/asm/byteorder.h
parent57b1494d2ba544c62673234da6115c21fac27ffc (diff)
parent7cb93181629c613ee2b8f4ffe3446f8003074842 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (28 commits) mm/hugetlb.c must #include <asm/io.h> video: Fix up hp6xx driver build regressions. sh: defconfig updates. sh: Kill off stray mach-rsk7203 reference. serial: sh-sci: Fix up SH7760/SH7780/SH7785 early printk regression. sh: Move out individual boards without mach groups. sh: Make sure AT_SYSINFO_EHDR is exposed to userspace in asm/auxvec.h. sh: Allow SH-3 and SH-5 to use common headers. sh: Provide common CPU headers, prune the SH-2 and SH-2A directories. sh/maple: clean maple bus code sh: More header path fixups for mach dir refactoring. sh: Move out the solution engine headers to arch/sh/include/mach-se/ sh: I2C fix for AP325RXA and Migo-R sh: Shuffle the board directories in to mach groups. sh: dma-sh: Fix up dreamcast dma.h mach path. sh: Switch KBUILD_DEFCONFIG to shx3_defconfig. sh: Add ARCH_DEFCONFIG entries for sh and sh64. sh: Fix compile error of Solution Engine sh: Proper __put_user_asm() size mismatch fix. sh: Stub in a dummy ENTRY_OFFSET for uImage offset calculation. ...
Diffstat (limited to 'arch/sh/include/asm/byteorder.h')
-rw-r--r--arch/sh/include/asm/byteorder.h70
1 files changed, 70 insertions, 0 deletions
diff --git a/arch/sh/include/asm/byteorder.h b/arch/sh/include/asm/byteorder.h
new file mode 100644
index 00000000000..4c13e611756
--- /dev/null
+++ b/arch/sh/include/asm/byteorder.h
@@ -0,0 +1,70 @@
+#ifndef __ASM_SH_BYTEORDER_H
+#define __ASM_SH_BYTEORDER_H
+
+/*
+ * Copyright (C) 1999 Niibe Yutaka
+ * Copyright (C) 2000, 2001 Paolo Alberelli
+ */
+#include <linux/compiler.h>
+#include <linux/types.h>
+
+static inline __attribute_const__ __u32 ___arch__swab32(__u32 x)
+{
+ __asm__(
+#ifdef __SH5__
+ "byterev %0, %0\n\t"
+ "shari %0, 32, %0"
+#else
+ "swap.b %0, %0\n\t"
+ "swap.w %0, %0\n\t"
+ "swap.b %0, %0"
+#endif
+ : "=r" (x)
+ : "0" (x));
+
+ return x;
+}
+
+static inline __attribute_const__ __u16 ___arch__swab16(__u16 x)
+{
+ __asm__(
+#ifdef __SH5__
+ "byterev %0, %0\n\t"
+ "shari %0, 32, %0"
+#else
+ "swap.b %0, %0"
+#endif
+ : "=r" (x)
+ : "0" (x));
+
+ return x;
+}
+
+static inline __u64 ___arch__swab64(__u64 val)
+{
+ union {
+ struct { __u32 a,b; } s;
+ __u64 u;
+ } v, w;
+ v.u = val;
+ w.s.b = ___arch__swab32(v.s.a);
+ w.s.a = ___arch__swab32(v.s.b);
+ return w.u;
+}
+
+#define __arch__swab64(x) ___arch__swab64(x)
+#define __arch__swab32(x) ___arch__swab32(x)
+#define __arch__swab16(x) ___arch__swab16(x)
+
+#if !defined(__STRICT_ANSI__) || defined(__KERNEL__)
+# define __BYTEORDER_HAS_U64__
+# define __SWAB_64_THRU_32__
+#endif
+
+#ifdef __LITTLE_ENDIAN__
+#include <linux/byteorder/little_endian.h>
+#else
+#include <linux/byteorder/big_endian.h>
+#endif
+
+#endif /* __ASM_SH_BYTEORDER_H */