ref: 71fbf8ad9e06c29514a12e8840e59d3f50e33b4c dir: /libc/src/sys/amd64-linux/syscall.awk/
/^#/ {next} {name=$2 ".s" printf "%s:\n\tmov\t%d,%%rax\n\tsyscall\n\tret\n",$2, $1 > name close(name)}