syscall.h

// System call numbers
#define SYS_fork          1
#define SYS_exit          2
#define SYS_wait          3
#define SYS_pipe          4
#define SYS_read          5
#define SYS_kill          6
#define SYS_exec          7
#define SYS_fstat         8
#define SYS_chdir         9
#define SYS_dup          10
#define SYS_getpid       11
#define SYS_sbrk         12
#define SYS_sleep        13
#define SYS_uptime       14
#define SYS_open         15
#define SYS_write        16
#define SYS_mknod        17
#define SYS_unlink       18
#define SYS_link         19
#define SYS_mkdir        20
#define SYS_close        21
#define SYS_getreadcount 22
#define SYS_settickets   23
#define SYS_getpinfo     24
#define SYS_mprotect     25
#define SYS_munprotect   26
#define SYS_clone        27
#define SYS_join         28