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-rw-r--r--include/asm-sparc/byteorder.h51
1 files changed, 47 insertions, 4 deletions
diff --git a/include/asm-sparc/byteorder.h b/include/asm-sparc/byteorder.h
index a2949aea48ef..bcd83aa351c5 100644
--- a/include/asm-sparc/byteorder.h
+++ b/include/asm-sparc/byteorder.h
@@ -1,12 +1,55 @@
-/* $Id: byteorder.h,v 1.15 1997/12/16 19:20:44 davem Exp $ */
#ifndef _SPARC_BYTEORDER_H
#define _SPARC_BYTEORDER_H
#include <asm/types.h>
+#include <asm/asi.h>
+
+#ifdef __GNUC__
+
+#ifdef CONFIG_SPARC32
+#define __SWAB_64_THRU_32__
+#endif
+
+#ifdef CONFIG_SPARC64
+
+static inline __u16 ___arch__swab16p(const __u16 *addr)
+{
+ __u16 ret;
+
+ __asm__ __volatile__ ("lduha [%1] %2, %0"
+ : "=r" (ret)
+ : "r" (addr), "i" (ASI_PL));
+ return ret;
+}
+
+static inline __u32 ___arch__swab32p(const __u32 *addr)
+{
+ __u32 ret;
+
+ __asm__ __volatile__ ("lduwa [%1] %2, %0"
+ : "=r" (ret)
+ : "r" (addr), "i" (ASI_PL));
+ return ret;
+}
+
+static inline __u64 ___arch__swab64p(const __u64 *addr)
+{
+ __u64 ret;
+
+ __asm__ __volatile__ ("ldxa [%1] %2, %0"
+ : "=r" (ret)
+ : "r" (addr), "i" (ASI_PL));
+ return ret;
+}
+
+#define __arch__swab16p(x) ___arch__swab16p(x)
+#define __arch__swab32p(x) ___arch__swab32p(x)
+#define __arch__swab64p(x) ___arch__swab64p(x)
+
+#endif /* CONFIG_SPARC64 */
+
+#define __BYTEORDER_HAS_U64__
-#if defined(__GNUC__) && !defined(__STRICT_ANSI__) || defined(__KERNEL__)
-# define __BYTEORDER_HAS_U64__
-# define __SWAB_64_THRU_32__
#endif
#include <linux/byteorder/big_endian.h>