break apart c libaray

1 files changed, 20 insertions, 0 deletions

diff --git a/kernel/lib/memmove.c b/kernel/lib/memmove.c
new file mode 100644
index 0000000..55be66d
--- /dev/null
+++ b/kernel/lib/memmove.c
@@ -0,0 +1,20 @@
+#include <lib.h>
+
+void *memmove(void *dest, const void *src, size_t n)
+{
+	char *d = dest;
+	const char *s = src;
+
+	if (d == s)
+		return d;
+
+	if (d < s) {
+		for (; n; n--)
+			*d++ = *s++;
+	} else {
+		while (n)
+			n--, d[n] = s[n];
+	}
+
+	return dest;
+}