zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/os/linux/linux-3.4.x/arch/arm/lib/strrchr.S b/ap/os/linux/linux-3.4.x/arch/arm/lib/strrchr.S
new file mode 100644
index 0000000..302f20c
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/arch/arm/lib/strrchr.S
@@ -0,0 +1,26 @@
+/*
+ * linux/arch/arm/lib/strrchr.S
+ *
+ * Copyright (C) 1995-2000 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * ASM optimised string functions
+ */
+#include <linux/linkage.h>
+#include <asm/assembler.h>
+
+ .text
+ .align 5
+ENTRY(strrchr)
+ mov r3, #0
+1: ldrb r2, [r0], #1
+ teq r2, r1
+ subeq r3, r0, #1
+ teq r2, #0
+ bne 1b
+ mov r0, r3
+ mov pc, lr
+ENDPROC(strrchr)