WIP: IDT in rust

This commit is contained in:
Jeremy Soller 2016-08-13 18:58:31 -06:00
commit dea137be73
10 changed files with 152 additions and 16 deletions

View file

@ -2,10 +2,35 @@
/// It is increcibly unsafe, and should be minimal in nature
/// It must create the IDT with the correct entries, those entries are
/// defined in other files inside of the `arch` module
use super::idt::{IDTR, IDT};
#[naked]
#[no_mangle]
pub unsafe extern fn kmain() {
asm!("xchg bx, bx" : : : : "intel", "volatile");
loop{}
for entry in IDT.iter_mut() {
entry.attribute = 1 << 7 | 0xE;
entry.selector = 8;
entry.set_offset(&blank as *const _ as usize);
entry.zero = 0;
entry.zero2 = 0;
}
IDTR.set_slice(&IDT);
asm!("lidt [rax]" : : "{rax}"(&IDTR as *const _ as usize) : : "intel", "volatile");
asm!("xchg bx, bx" : : : : "intel", "volatile");
asm!("int 0xFF" : : : : "intel", "volatile");
loop{
asm!("hlt" : : : : "intel", "volatile");
}
}
#[naked]
pub unsafe extern fn blank() {
asm!("xchg bx, bx" : : : : "intel", "volatile");
asm!("iretq" : : : : "intel", "volatile");
}