sparc: Commonize memcmp assembler.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 27 insertions, 0 deletions

diff --git a/arch/sparc/lib/memcmp.S b/arch/sparc/lib/memcmp.S
new file mode 100644
index 000000000000..efa106c41ed0
--- /dev/null
+++ b/arch/sparc/lib/memcmp.S
@@ -0,0 +1,27 @@
+/* Sparc optimized memcmp code.
+ *
+ * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ * Copyright (C) 2000, 2008 David S. Miller (davem@davemloft.net)
+ */
+
+#include <linux/linkage.h>
+#include <asm/asm.h>
+
+        .text
+ENTRY(memcmp)
+        cmp     %o2, 0
+1:      BRANCH32(be, pn, 2f)
+         nop
+        ldub    [%o0], %g7
+        ldub    [%o1], %g3
+        sub     %o2, 1, %o2
+        add     %o0, 1, %o0
+        add     %o1, 1, %o1
+        subcc   %g7, %g3, %g3
+        BRANCH32(be, pt, 1b)
+         cmp    %o2, 0
+        retl
+         mov    %g3, %o0
+2:      retl
+         mov    0, %o0
+ENDPROC(memcmp)