read(fd Int, address Pointer, length Int) -> Int {
	return syscall(0, fd, address, length)
}

write(fd Int, address Pointer, length Int) -> Int {
	return syscall(1, fd, address, length)
}

open(file Pointer, flags Int, mode Int) -> Int {
	return syscall(2, file, flags, mode)
}

close(fd Int) -> Int {
	return syscall(3, fd)
}