christoph/lecture-operating-system-development
1
Fork 0
Code Activity

disable forced bluescreen

Browse Source
This commit is contained in:
Christoph Urlacher
2022-07-04 16:20:46 +02:00
parent 17aee557da
commit 42a1d719ee
1 changed files with 8 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
c_os/main.cc
View File

@ -52,23 +52,22 @@ int main() {
// Activate paging // Activate paging
// This has to happen after the allocator is initialized but before the scheduler is started // This has to happen after the allocator is initialized but before the scheduler is started
// TODO: Scheduler triggers bluescreen?
pg_init(); pg_init();
// Trigger Bluescreen // Trigger Bluescreen
kout << "Trigger Bluescreen, if you can read this it didn't work" << endl; // kout << "Trigger Bluescreen, if you can read this it didn't work" << endl;
// BlueScreen 1 // BlueScreen 1
// asm("int $3"); // asm("int $3");
// BlueScreen 2 // BlueScreen 2
unsigned int* page = pg_alloc_page(); // unsigned int* page = pg_alloc_page();
*page = 42; // *page = 42;
pg_write_protect_page(page); // pg_write_protect_page(page);
invalidate_tlb_entry(page); // If we don't invalidate after first access the write protection // invalidate_tlb_entry(page); // If we don't invalidate after first access the write protection
// won't work as no lookup is performed (address in tlb) // // won't work as no lookup is performed (address in tlb)
*page = 42; // We map logical to physical 1:1 so no need to do any lookup // *page = 42; // We map logical to physical 1:1 so no need to do any lookup
// If tlb is invalidated this access produces a pagefault // // If tlb is invalidated this access produces a pagefault
// Demo threads anlegen // Demo threads anlegen
// scheduler.ready(new HelloWorldThread()); // scheduler.ready(new HelloWorldThread());