1 files changed, 30 insertions, 0 deletions

diff --git a/arch/sparc/lib/NG4copy_from_user.S b/arch/sparc/lib/NG4copy_from_user.S
new file mode 100644
index 000000000000..fd9f903ffa32
--- /dev/null
+++ b/arch/sparc/lib/NG4copy_from_user.S
@@ -0,0 +1,30 @@
+/* NG4copy_from_user.S: Niagara-4 optimized copy from userspace.
+ *
+ * Copyright (C) 2012 David S. Miller (davem@davemloft.net)
+ */
+
+#define EX_LD(x)                \
+98:     x;                      \
+        .section __ex_table,"a";\
+        .align 4;               \
+        .word 98b, __retl_one_asi;\
+        .text;                  \
+        .align 4;
+
+#ifndef ASI_AIUS
+#define ASI_AIUS        0x11
+#endif
+
+#define FUNC_NAME               NG4copy_from_user
+#define LOAD(type,addr,dest)    type##a [addr] %asi, dest
+#define EX_RETVAL(x)            0
+
+#ifdef __KERNEL__
+#define PREAMBLE                                        \
+        rd              %asi, %g1;                      \
+        cmp             %g1, ASI_AIUS;                  \
+        bne,pn          %icc, ___copy_in_user;          \
+         nop
+#endif
+
+#include "NG4memcpy.S"