SYS_SETFAULTHANDLER Set signal Handler
SYS_YIELD Yield remainder of timestamp
SYS_SLEEP Sleep until messaged or signaled
+SYS_TIMEDSLEEP Sleep until a specified time has elapsed
SYS_WAITEVENT Wait for an event
SYS_WAITTID Wait for a thread to do something
+SYS_SETSIGNALHANDLER Set the POSIX signal handler
+SYS_SETSIGNALMASK Sets the mask of disabled POSIX signals
+
SYS_SETNAME Sets the name of the current thread
SYS_GETNAME Gets the name of a thread
SYS_GETTID Get current thread ID