diff options
Diffstat (limited to 'kernel/src/main.rs')
| -rw-r--r-- | kernel/src/main.rs | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/kernel/src/main.rs b/kernel/src/main.rs index 397296e..bca5686 100644 --- a/kernel/src/main.rs +++ b/kernel/src/main.rs @@ -3,6 +3,8 @@ use core::panic::PanicInfo; +static HELLO: &[u8] = b"Hello, World!"; + #[panic_handler] fn panic(_info: &PanicInfo) -> ! { loop {} @@ -10,5 +12,13 @@ fn panic(_info: &PanicInfo) -> ! { #[unsafe(no_mangle)] pub extern "C" fn _start() -> ! { + let gob_buffer = 0xb8000 as *mut u8; + + for (i, &byte) in HELLO.iter().enumerate() { + unsafe { + *gob_buffer.offset(i as isize * 2) = byte; // Puts the ASCII char into the buffer + *gob_buffer.offset(i as isize * 2 + 1) = 0xb; // Colors it white on black + } + } loop {} } |