summaryrefslogtreecommitdiffstats
path: root/include/asm-blackfin/byteorder.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/asm-blackfin/byteorder.h')
-rw-r--r--include/asm-blackfin/byteorder.h48
1 files changed, 48 insertions, 0 deletions
diff --git a/include/asm-blackfin/byteorder.h b/include/asm-blackfin/byteorder.h
new file mode 100644
index 00000000000..6a673d42da1
--- /dev/null
+++ b/include/asm-blackfin/byteorder.h
@@ -0,0 +1,48 @@
+#ifndef _BLACKFIN_BYTEORDER_H
+#define _BLACKFIN_BYTEORDER_H
+
+#include <asm/types.h>
+#include <linux/compiler.h>
+
+#ifdef __GNUC__
+
+static __inline__ __attribute_const__ __u32 ___arch__swahb32(__u32 xx)
+{
+ __u32 tmp;
+ __asm__("%1 = %0 >> 8 (V);\n\t"
+ "%0 = %0 << 8 (V);\n\t"
+ "%0 = %0 | %1;\n\t"
+ : "+d"(xx), "=&d"(tmp));
+ return xx;
+}
+
+static __inline__ __attribute_const__ __u32 ___arch__swahw32(__u32 xx)
+{
+ __u32 rv;
+ __asm__("%0 = PACK(%1.L, %1.H);\n\t": "=d"(rv): "d"(xx));
+ return rv;
+}
+
+#define __arch__swahb32(x) ___arch__swahb32(x)
+#define __arch__swahw32(x) ___arch__swahw32(x)
+#define __arch__swab32(x) ___arch__swahb32(___arch__swahw32(x))
+
+static __inline__ __attribute_const__ __u16 ___arch__swab16(__u16 xx)
+{
+ __u32 xw = xx;
+ __asm__("%0 <<= 8;\n %0.L = %0.L + %0.H (NS);\n": "+d"(xw));
+ return (__u16)xw;
+}
+
+#define __arch__swab16(x) ___arch__swab16(x)
+
+#endif
+
+#if defined(__GNUC__) && !defined(__STRICT_ANSI__) || defined(__KERNEL__)
+# define __BYTEORDER_HAS_U64__
+# define __SWAB_64_THRU_32__
+#endif
+
+#include <linux/byteorder/little_endian.h>
+
+#endif /* _BLACKFIN_BYTEORDER_H */