--- zzzz-none-000/linux-4.4.271/arch/mips/boot/compressed/string.c	2021-06-03 06:22:09.000000000 +0000
+++ dakota-7530ac-750/linux-4.4.271/arch/mips/boot/compressed/string.c	2023-01-11 09:25:41.000000000 +0000
@@ -26,3 +26,19 @@
 		ss[i] = c;
 	return s;
 }
+
+void *memmove(void *__dest, __const void *__src, size_t count)
+{
+	unsigned char *d = __dest;
+	const unsigned char *s = __src;
+
+	if (__dest == __src)
+		return __dest;
+
+	if (__dest < __src)
+		return memcpy(__dest, __src, count);
+
+	while (count--)
+		d[count] = s[count];
+	return __dest;
+}