Index: endian.h
===================================================================
RCS file: /cvs/src/sys/arch/arm/include/endian.h,v
retrieving revision 1.7
diff -u -p -r1.7 endian.h
--- endian.h	12 Jul 2014 16:25:08 -0000	1.7
+++ endian.h	7 Jan 2015 11:13:29 -0000
@@ -3,6 +3,51 @@
 #ifndef _ARM_ENDIAN_H_
 #define _ARM_ENDIAN_H_
 
+#ifdef _KERNEL
+#ifdef __armv7__
+#ifdef __GNUC__
+
+static inline __uint16_t
+___swap16md(__uint16_t x)
+{
+	__uint16_t rv;
+
+	__asm ("rev16 %0, %1" : "=r" (rv) : "r" (x));
+
+	return (rv);
+}
+#define __swap16md(x) ___swap16md(x)
+
+static inline __uint32_t
+___swap32md(__uint32_t x)
+{
+	__uint32_t rv;
+
+	__asm ("rev %0, %1" : "=r" (rv) : "r" (x));
+
+	return (rv);
+}
+#define __swap32md(x) ___swap32md(x)
+
+static inline __uint64_t
+___swap64md(__uint64_t x)
+{
+	__uint64_t rv;
+
+	rv = (__uint64_t)__swap32md(x >> 32) |
+	    (__uint64_t)__swap32md(x) << 32;
+
+	return (rv);
+}
+#define __swap64md(x) ___swap64md(x)
+
+/* Tell sys/endian.h we have MD variants of the swap macros.  */
+#define __HAVE_MD_SWAP
+
+#endif  /* __GNUC__ */
+#endif  /* __armv7__ */
+#endif  /* _KERNEL */
+
 #define _BYTE_ORDER _LITTLE_ENDIAN
 #define	__STRICT_ALIGNMENT