1 files changed, 12 insertions, 0 deletions

diff --git a/uisimulator/win32/kernel.c b/uisimulator/win32/kernel.c
index 567ed9ee39..f2a9dbbb59 100644
--- a/uisimulator/win32/kernel.c
+++ b/uisimulator/win32/kernel.c
@@ -103,3 +103,15 @@ int set_irq_level (int level)
     static int _lv = 0;
     return (_lv = level);
 }
+
+void mutex_init(struct mutex *m)
+{
+}
+
+void mutex_lock(struct mutex *m)
+{
+}
+
+void mutex_unlock(struct mutex *m)
+{
+}