Added license

1 files changed, 20 insertions, 2 deletions

diff --git a/lowlevel.c b/lowlevel.c
index b305ea4..0fc353a 100644
--- a/lowlevel.c
+++ b/lowlevel.c
@@ -1,3 +1,21 @@
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ *
+ */
+
 #ifndef LOWLEVEL_C
 #define LOWLEVEL_C
 
@@ -13,12 +31,12 @@ void outb(uint16_t p,uint8_t val)
 
 void disable_ints()
 {
-	asm("cli");
+	asm("cli"::);
 }
 
 void enable_ints()
 {
-	asm("sti");
+	asm("sti"::);
 }
 
 #endif
\ No newline at end of file