recover lock

lib/freertos/locks.c

@@ -0,0 +1,48 @@
+#include <sys/lock.h>
+#include <stdlib.h>
+#include "FreeRTOS.h"
+#include "semphr.h"
+#include "portmacro.h"
+#include "task.h"
+
+typedef long _lock_t;
+
+void _lock_init(_lock_t *lock)
+{
+}
+
+void _lock_init_recursive(_lock_t *lock)
+{
+}
+
+void _lock_close(_lock_t *lock)
+{
+}
+
+void _lock_close_recursive(_lock_t *lock) __attribute__((alias("_lock_close")));
+
+void _lock_acquire(_lock_t *lock)
+{
+}
+
+void _lock_acquire_recursive(_lock_t *lock)
+{
+}
+
+int _lock_try_acquire(_lock_t *lock)
+{
+    return 1;
+}
+
+int _lock_try_acquire_recursive(_lock_t *lock)
+{
+    return 1;
+}
+
+void _lock_release(_lock_t *lock)
+{
+}
+
+void _lock_release_recursive(_lock_t *lock)
+{
+}