diff --git a/arch/cpu/native/Makefile.native b/arch/cpu/native/Makefile.native
index 90a784e34..4e0558a2f 100644
--- a/arch/cpu/native/Makefile.native
+++ b/arch/cpu/native/Makefile.native
@@ -1,6 +1,6 @@
 CONTIKI_CPU_DIRS = . net dev
 
-CONTIKI_SOURCEFILES += rtimer-arch.c watchdog.c eeprom.c
+CONTIKI_SOURCEFILES += rtimer-arch.c watchdog.c eeprom.c int-master.c
 
 ### Compiler definitions
 CC       ?= gcc
diff --git a/arch/cpu/native/int-master.c b/arch/cpu/native/int-master.c
new file mode 100644
index 000000000..177dbd442
--- /dev/null
+++ b/arch/cpu/native/int-master.c
@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 2018, George Oikonomou - http://www.spd.gr
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the copyright holder nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/*---------------------------------------------------------------------------*/
+#include "contiki.h"
+#include "sys/int-master.h"
+
+#include <stdbool.h>
+/*---------------------------------------------------------------------------*/
+#define DISABLED 0
+#define ENABLED  1
+/*---------------------------------------------------------------------------*/
+static int_master_status_t stat = DISABLED;
+/*---------------------------------------------------------------------------*/
+void
+int_master_enable(void)
+{
+  stat = ENABLED;
+}
+/*---------------------------------------------------------------------------*/
+int_master_status_t
+int_master_read_and_disable(void)
+{
+  int_master_status_t rv = stat;
+  stat = DISABLED;
+  return rv;
+}
+/*---------------------------------------------------------------------------*/
+void
+int_master_status_set(int_master_status_t status)
+{
+  stat = status;
+}
+/*---------------------------------------------------------------------------*/
+bool
+int_master_is_enabled(void)
+{
+  return stat == DISABLED ? false : true;
+}
+/*---------------------------------------------------------------------------*/