sys__ksem_trywait
int sys__ksem_trywait(struct lwp *, const struct sys__ksem_trywait_args *, register_t *);
.sy_call = (sy_call_t *)sys__ksem_trywait
{ SYS__ksem_trywait, 0, (sy_call_t *)sys__ksem_trywait },
check_syscall_args(sys__ksem_trywait)
int sys__ksem_trywait(struct lwp *, const struct sys__ksem_trywait_args *, register_t *);