[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/arch/blackfin/lib/strncpy.S b/src/kernel/linux/v4.14/arch/blackfin/lib/strncpy.S
new file mode 100644
index 0000000..92fd182
--- /dev/null
+++ b/src/kernel/linux/v4.14/arch/blackfin/lib/strncpy.S
@@ -0,0 +1,85 @@
+/*
+ * Copyright 2005-2010 Analog Devices Inc.
+ *
+ * Licensed under the Clear BSD license or the GPL-2 (or later)
+ */
+
+#include <linux/linkage.h>
+#include <asm/context.S>
+
+/* void *strncpy(char *dest, const char *src, size_t n);
+ * R0 = address (dest)
+ * R1 = address (src)
+ * R2 = size
+ * Returns a pointer (R0) to the destination string dest
+ * we do this by not changing R0
+ */
+
+#ifdef CONFIG_STRNCPY_L1
+.section .l1.text
+#else
+.text
+#endif
+
+.align 2
+
+ENTRY(_strncpy)
+ CC = R2 == 0;
+ if CC JUMP 6f;
+
+ P2 = R2 ; /* size */
+ P0 = R0 ; /* dst*/
+ P1 = R1 ; /* src*/
+
+ LSETUP (1f, 2f) LC0 = P2;
+1:
+ R1 = B [P1++] (Z);
+ B [P0++] = R1;
+ CC = R1 == 0;
+2:
+ if CC jump 3f;
+
+ RTS;
+
+ /* if src is shorter than n, we need to null pad bytes in dest
+ * but, we can get here when the last byte is zero, and we don't
+ * want to copy an extra byte at the end, so we need to check
+ */
+3:
+ R2 = LC0;
+ CC = R2
+ if ! CC jump 6f;
+
+ /* if the required null padded portion is small, do it here, rather than
+ * handling the overhead of memset (which is OK when things are big).
+ */
+ R3 = 0x20;
+ CC = R2 < R3;
+ IF CC jump 4f;
+
+ R2 += -1;
+
+ /* Set things up for memset
+ * R0 = address
+ * R1 = filler byte (this case it's zero, set above)
+ * R2 = count (set above)
+ */
+
+ I1 = R0;
+ R0 = RETS;
+ I0 = R0;
+ R0 = P0;
+ pseudo_long_call _memset, p0;
+ R0 = I0;
+ RETS = R0;
+ R0 = I1;
+ RTS;
+
+4:
+ LSETUP(5f, 5f) LC0;
+5:
+ B [P0++] = R1;
+6:
+ RTS;
+
+ENDPROC(_strncpy)