ref: 63c625229ddae2be9785f8c9a0e4e5c5d2a6cb6c dir: /libc/src/sys/amd64-sysv-linux/syscall.awk/
/^#/ {next} {name=$2 ".s" printf "%s:\n\tmov\t%d,%%rax\n\tsyscall\n\tret\n",$2, $1 > name close(name)}