rust-operating-system/src/main.rs

#![no_std]
#![no_main]

use core::panic::PanicInfo;

#[panic_handler]
fn panic(_info: &PanicInfo) -> !{
  loop {}
}

static GREETING: &[u8] = b"Gamarjoba, munde";

#[no_mangle]
pub extern "C" fn _start() -> ! {

  let vga_buffer = 0xb8000 as *mut u8;

  for (i, &byte) in GREETING.iter().enumerate() {
    unsafe {
      *vga_buffer.offset(i as isize * 2) = byte;
      *vga_buffer.offset(i as isize * 2 + 1) = 0xb; //light cyan
    }
  }

  loop {}
}