michaelkuc6/blog_os
1
0
Fork 0
mirror of https://github.com/phil-opp/blog_os.git synced 2025-12-16 14:27:49 +00:00
Code Issues Projects Releases Wiki Activity

Test translate_addr by translating some virtual addresses

Browse Source
This commit is contained in:
Philipp Oppermann
2019-01-26 12:58:59 +01:00
parent 8b380f0692
commit 38a121a887
1 changed files with 10 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
src/main.rs
View File

@@ -9,7 +9,7 @@ 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::structures::paging::PageTable; use blog_os::memory::translate_addr;
println!("Hello World{}", "!"); println!("Hello World{}", "!");
@@ -18,11 +18,15 @@ pub extern "C" fn _start() -> ! {
unsafe { PICS.lock().initialize() }; unsafe { PICS.lock().initialize() };
x86_64::instructions::interrupts::enable(); x86_64::instructions::interrupts::enable();
let level_4_table_ptr = 0xffff_ffff_ffff_f000 as *const PageTable; const LEVEL_4_TABLE_ADDR: usize = 0o_177777_777_777_777_777_0000;
let level_4_table = unsafe { &*level_4_table_ptr };
for i in 0..10 { // the identity-mapped vga buffer page
println!("Entry {}: {:?}", i, level_4_table[i]); println!("0xb8000 -> {:?}", translate_addr(0xb8000, LEVEL_4_TABLE_ADDR));
} // some code page
println!("0x20010a -> {:?}", translate_addr(0x20010a, LEVEL_4_TABLE_ADDR));
// some stack page
println!("0x57ac001ffe48 -> {:?}", translate_addr(0x57ac001ffe48,
LEVEL_4_TABLE_ADDR));
println!("It did not crash!"); println!("It did not crash!");
blog_os::hlt_loop(); blog_os::hlt_loop();