From 91ca04e8c2066e2f6ae051497ceb502fbad6c712 Mon Sep 17 00:00:00 2001 From: Philipp Oppermann Date: Fri, 25 Jan 2019 14:28:23 +0100 Subject: [PATCH] Retrieve address of level 4 page table --- src/main.rs | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/src/main.rs b/src/main.rs index d6a4c9b9..5519385e 100644 --- a/src/main.rs +++ b/src/main.rs @@ -9,6 +9,10 @@ use core::panic::PanicInfo; #[no_mangle] pub extern "C" fn _start() -> ! { 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{}", "!"); @@ -17,10 +21,6 @@ pub extern "C" fn _start() -> ! { unsafe { PICS.lock().initialize() }; x86_64::instructions::interrupts::enable(); - // provoke a page fault - let ptr = 0xdeadbeaf as *mut u32; - unsafe { *ptr = 42; } - println!("It did not crash!"); blog_os::hlt_loop(); }