#define SYS_exit		  1
#define SYS_read		  3
#define SYS_write		  4
#define SYS_open		  5
#define SYS_close		  6
#define SYS_getpid		 20
#define SYS_kill		 37
#define SYS_brk			 45
#define SYS_mmap		 90
#define SYS_munmap		 91
#define SYS_setitimer		104
#define SYS_clone		120
#define SYS_sched_yield		158
#define SYS_nanosleep		162
#define SYS_rt_sigreturn	172
#define SYS_rt_sigaction	173
#define SYS_rt_sigprocmask	174