diff --git a/libgcc/memcpy.c b/libgcc/memcpy.c
index 58b1e405627aa..4a31424dd228a 100644
--- a/libgcc/memcpy.c
+++ b/libgcc/memcpy.c
@@ -4,9 +4,18 @@
 void *
 memcpy (void *dest, const void *src, size_t len)
 {
-  char *d = dest;
-  const char *s = src;
-  while (len--)
-    *d++ = *s++;
+  char *d;
+  const char *s;
+  if((size_t)destination<(size_t)source){
+    s=src+len;
+    d=dest+len;
+    while(len--)
+      *--d = *--s;
+  }else if((size_t)destination>(size_t)source){
+    s=src;
+    d=dest;
+    while (len--)
+      *d++ = *s++;
+  }
   return dest;
 }