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Retrieve address of level 4 page table

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Philipp Oppermann
2019-01-25 14:28:23 +01:00
parent ada45c6e52
commit 91ca04e8c2
1 changed files with 4 additions and 4 deletions
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8
src/main.rs
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@@ -9,6 +9,10 @@ use core::panic::PanicInfo;
#[no_mangle] #[no_mangle]
pub extern "C" fn _start() -> ! { pub extern "C" fn _start() -> ! {
use blog_os::interrupts::PICS; use blog_os::interrupts::PICS;
use x86_64::registers::control::Cr3;
let (level_4_page_table, _) = Cr3::read();
println!("Level 4 page table at: {:?}", level_4_page_table.start_address());
println!("Hello World{}", "!"); println!("Hello World{}", "!");
@@ -17,10 +21,6 @@ pub extern "C" fn _start() -> ! {
unsafe { PICS.lock().initialize() }; unsafe { PICS.lock().initialize() };
x86_64::instructions::interrupts::enable(); x86_64::instructions::interrupts::enable();
// provoke a page fault
let ptr = 0xdeadbeaf as *mut u32;
unsafe { *ptr = 42; }
println!("It did not crash!"); println!("It did not crash!");
blog_os::hlt_loop(); blog_os::hlt_loop();
} }