func golang.org/x/sys/unix.syscall_syscall6X

one use

	golang.org/x/sys/unix (current package)
		syscall_darwin_libSystem.go#L14: func syscall_syscall6X(fn, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err Errno)