1 files changed, 43 insertions, 0 deletions
diff --git a/kernel/arch/blackfin/lib/strcmp.S b/kernel/arch/blackfin/lib/strcmp.S
new file mode 100644
index 000000000..9c8b98637
--- /dev/null
+++ b/kernel/arch/blackfin/lib/strcmp.S
@@ -0,0 +1,43 @@
+/*
+ * Copyright 2005-2010 Analog Devices Inc.
+ *
+ * Licensed under the Clear BSD license or the GPL-2 (or later)
+ */
+
+#include <linux/linkage.h>
+
+/* void *strcmp(char *s1, const char *s2);
+ * R0 = address (s1)
+ * R1 = address (s2)
+ *
+ * Returns an integer less than, equal to, or greater than zero if s1
+ *  (or the first n  bytes thereof) is found, respectively, to be less
+ *  than, to match, or be greater than s2.
+ */
+
+#ifdef CONFIG_STRCMP_L1
+.section .l1.text
+#else
+.text
+#endif
+
+.align 2
+
+ENTRY(_strcmp)
+	P0 = R0 ;       /* s1 */
+	P1 = R1 ;       /* s2 */
+
+1:
+	R0 = B[P0++] (Z);      /* get *s1 */
+	R1 = B[P1++] (Z);      /* get *s2 */
+	CC = R0 == R1;         /* compare a byte */
+	if ! cc jump 2f;       /* not equal, break out */
+	CC = R0;               /* at end of s1? */
+	if cc jump 1b (bp);    /* no, keep going */
+	jump.s 3f;             /* strings are equal */
+2:
+	R0 = R0 - R1;          /* *s1 - *s2 */
+3:
+	RTS;
+
+ENDPROC(_strcmp)