Index: kernel/generic/src/proc/thread.c
===================================================================
--- kernel/generic/src/proc/thread.c	(revision 180255fbf234649700144c2f9bd2b18bd7fc92de)
+++ kernel/generic/src/proc/thread.c	(revision 81db65bb2c2709895ffd352bc91bb2435f6b2de0)
@@ -918,4 +918,10 @@
 }
 
+sysarg_t sys_thread_udelay(uint32_t usec)
+{
+	asm_delay_loop(usec * CPU->delay_loop_const);
+	return 0;
+}
+
 /** @}
  */
Index: kernel/generic/src/syscall/syscall.c
===================================================================
--- kernel/generic/src/syscall/syscall.c	(revision 180255fbf234649700144c2f9bd2b18bd7fc92de)
+++ kernel/generic/src/syscall/syscall.c	(revision 81db65bb2c2709895ffd352bc91bb2435f6b2de0)
@@ -127,4 +127,5 @@
 	(syshandler_t) sys_thread_get_id,
 	(syshandler_t) sys_thread_usleep,
+	(syshandler_t) sys_thread_udelay,
 	
 	(syshandler_t) sys_task_get_id,