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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-sh/byteorder.h
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'include/asm-sh/byteorder.h')
-rw-r--r--include/asm-sh/byteorder.h56
1 files changed, 56 insertions, 0 deletions
diff --git a/include/asm-sh/byteorder.h b/include/asm-sh/byteorder.h
new file mode 100644
index 000000000000..bff2b1382e01
--- /dev/null
+++ b/include/asm-sh/byteorder.h
@@ -0,0 +1,56 @@
+#ifndef __ASM_SH_BYTEORDER_H
+#define __ASM_SH_BYTEORDER_H
+
+/*
+ * Copyright (C) 1999 Niibe Yutaka
+ */
+
+#include <asm/types.h>
+#include <linux/compiler.h>
+
+static __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 x)
+{
+ __asm__("swap.b %0, %0\n\t"
+ "swap.w %0, %0\n\t"
+ "swap.b %0, %0"
+ : "=r" (x)
+ : "0" (x));
+ return x;
+}
+
+static __inline__ __attribute_const__ __u16 ___arch__swab16(__u16 x)
+{
+ __asm__("swap.b %0, %0"
+ : "=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 */