ref: 3c6c5a02710e4d7a3da6121e9bfb8d2bc0d786dd
dir: /src/libc/arch/amd64/openbsd/syscall.lst/
#Tab 15 #number name nargs 1 _exit 1 2 _fork 0 3 _read 3 4 _write 3 5 _open 3 6 _close 1 17 _brk 1 20 _getpid 0 46 _sigaction 3 67 _gettimeofday 2 122 _kill 2 198 _lseek 3