SYS_exit           15 src/pkg/runtime/sys_freebsd_arm.s #define SYS_exit (SYS_BASE + 1)
SYS_exit           15 src/pkg/runtime/sys_linux_arm.s #define SYS_exit (SYS_BASE + 1)
SYS_exit           21 src/pkg/runtime/syscall_nacl.h #define SYS_exit 30