Introduction to Paging

src/main.rs

@@ -16,6 +16,16 @@ pub extern "C" fn _start() -> ! {
 
     anos::init();
 
+    let ptr = 0x2031b2 as *mut u32;
+    unsafe { let x = *ptr; }
+    println!("read worked");
+    unsafe { *ptr = 42 };
+    println!("write worked");
+
+    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());
+
     // 触发一个中断
     x86_64::instructions::interrupts::int3();
     println!("It didn't crash!");