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Philipp Oppermann
2019-01-13 16:25:08 +01:00
parent c1009715de
commit 8d6eab6b33
2 changed files with 22 additions and 1 deletions
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16
src/interrupts.rs
View File

@@ -7,7 +7,7 @@
use crate::{gdt, print, println};
use pic8259_simple::ChainedPics;
use spin;
use x86_64::structures::idt::{ExceptionStackFrame, InterruptDescriptorTable};
use x86_64::structures::idt::{ExceptionStackFrame, InterruptDescriptorTable, PageFaultErrorCode};
use lazy_static::lazy_static;
pub const PIC_1_OFFSET: u8 = 32;
@@ -23,6 +23,7 @@ lazy_static! {
static ref IDT: InterruptDescriptorTable = {
let mut idt = InterruptDescriptorTable::new();
idt.breakpoint.set_handler_fn(breakpoint_handler);
idt.page_fault.set_handler_fn(page_fault_handler);
unsafe {
idt.double_fault
.set_handler_fn(double_fault_handler)
@@ -44,6 +45,19 @@ extern "x86-interrupt" fn breakpoint_handler(stack_frame: &mut ExceptionStackFra
println!("EXCEPTION: BREAKPOINT\n{:#?}", stack_frame);
}
extern "x86-interrupt" fn page_fault_handler(
stack_frame: &mut ExceptionStackFrame,
_error_code: PageFaultErrorCode,
) {
use crate::hlt_loop;
use x86_64::registers::control::Cr2;
println!("EXCEPTION: PAGE FAULT");
println!("Accessed Address: {:?}", Cr2::read());
println!("{:#?}", stack_frame);
hlt_loop();
}
extern "x86-interrupt" fn double_fault_handler(
stack_frame: &mut ExceptionStackFrame,
_error_code: u64,

7
src/main.rs
View File

@@ -12,9 +12,16 @@ use blog_os::println;
#[no_mangle] // don't mangle the name of this function
pub extern "C" fn _start() -> ! {
use blog_os::interrupts::PICS;
use x86_64::structures::paging::PageTable;
println!("Hello World{}", "!");
let level_4_table_ptr = 0xffff_ffff_ffff_f000 as *const PageTable;
let level_4_table = unsafe {&*level_4_table_ptr};
for i in 0..10 {
println!("Entry {}: {:?}", i, level_4_table[i]);
}
blog_os::gdt::init();
blog_os::interrupts::init_idt();
unsafe { PICS.lock().initialize() };