1 files changed, 20 insertions, 0 deletions
diff --git a/user/ulib.c b/user/ulib.c
index ddda0f5..8bfba5d 100644
--- a/user/ulib.c
+++ b/user/ulib.c
@@ -107,3 +107,23 @@ memmove(void *vdst, const void *vsrc, int n)
     *dst++ = *src++;
   return vdst;
 }
+
+int
+memcmp(const void *s1, const void *s2, uint n)
+{
+  const char *p1 = s1, *p2 = s2;
+  while (n-- > 0) {
+    if (*p1 != *p2) {
+      return *p1 - *p2;
+    }
+    p1++;
+    p2++;
+  }
+  return 0;
+}
+
+void *
+memcpy(void *dst, const void *src, uint n)
+{
+  return memmove(dst, src, n);
+}