From ea36658f5eccf500c020026fc6b7f69db163d3bd Mon Sep 17 00:00:00 2001
From: 7u83 <7u83@mail.ru>
Date: Wed, 5 Jun 2024 08:36:33 +0200
Subject: [PATCH] Added some comment

---
 long_xadd.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/long_xadd.c b/long_xadd.c
index c5579c5..07a4fbd 100644
--- a/long_xadd.c
+++ b/long_xadd.c
@@ -1,5 +1,13 @@
 
-
+/**
+ * Add two longs in xmem zero page
+ *
+ * r0 = ptr to firts arg
+ * r1 = ptr to second arg
+ * r7 = length
+ *
+ * result is in r0*
+ */
 
 void long_xadd() __naked
 {