96 lines
3.6 KiB
C++
Executable File
96 lines
3.6 KiB
C++
Executable File
/*****************************************************************************
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* *
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* M A I N *
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* *
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*---------------------------------------------------------------------------*
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* Beschreibung: Startroutine, wird direkt vom Bootlader angesprungen, *
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* nachdem dieser in den Protected Mode geschaltet hat und *
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* die GDT und IDT initalisiert hat. *
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* *
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* Autor: Michael Schoettner, HHU, 11.11.2016 *
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*****************************************************************************/
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#include "kernel/Globals.h"
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#include "kernel/Paging.h"
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#include "kernel/threads/IdleThread.h"
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#include "user/CoopThreadDemo.h"
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#include "user/HelloWorldThread.h"
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#include "user/PCSPKdemo.h"
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#include "user/PreemptiveThreadDemo.h"
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#include "user/VBEdemo.h"
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int main() {
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kout.clear();
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// Speicherverwaltung initialisieren
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allocator.init();
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// Initialize scrollback buffer after allocator.init()
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kout.init(5);
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// Startmeldung
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kout << "HHUos 0.10\n"
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<< "=========\n"
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<< "Unterstuetzte Funktionen:\n"
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<< " - Bildschirmausgaben\n"
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<< " - Sound ueber den PC-Lautsprecher\n"
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<< " - Tastatureingaben per Abfrage\n"
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<< " - Einfache Heap verwaltung\n"
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<< " - Tastatureingaben per Interrupt\n"
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<< " - Kooperative Threads\n"
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<< " - VESA Graphics Mode\n"
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<< " - Einfaches Paging\n"
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<< " - Preemptive Threads\n"
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<< " - Einfache Synchronisierung\n"
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<< endl;
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// Tastatur-Unterbrechungsroutine 'einstoepseln'
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/* hier muss Code eingefuegt werden */
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kb.plugin();
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pit.plugin();
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// Interrupts erlauben (Tastatur, PIT)
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/* hier muss Code eingefuegt werden */
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cpu.enable_int();
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// Activate paging
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// This has to happen after the allocator is initialized but before the scheduler is started
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pg_init();
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// TODO: Move this to demo
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// Trigger Bluescreen
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// kout << "Trigger Bluescreen, if you can read this it didn't work" << endl;
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// BlueScreen 1
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// asm("int $3");
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// BlueScreen 2
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// unsigned int* page = pg_alloc_page();
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// *page = 42;
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// pg_write_protect_page(page);
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// invalidate_tlb_entry(page); // If we don't invalidate after first access the write protection
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// // won't work as no lookup is performed (address in tlb)
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// *page = 42; // We map logical to physical 1:1 so no need to do any lookup
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// // If tlb is invalidated this access produces a pagefault
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// TODO: Make menu for demos
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// Demo threads anlegen
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// scheduler.ready(new HelloWorldThread());
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// scheduler.ready(new CoopThreadDemo());
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// scheduler.ready(new VBEdemo()); // Switch to VESA graphics mode
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// scheduler.ready(new PCSPKdemo());
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scheduler.ready(new PreemptiveThreadDemo());
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// Scheduler starten (schedule() erzeugt den Idle-Thread)
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scheduler.schedule();
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// TODO: Use templates for queue so threads don't have to be casted down from chain
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// TODO: Change scheduler to only use references instead of pointers
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// TODO: Rewrite all demos to threads
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// TODO: Unify debug output format
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// TODO: Serial output, output graphviz dot data for memory etc.
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// Scheduler doesn't return
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return 0;
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}
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