add very minimal demo menu

c_os/kernel/Globals.cc

@@ -22,8 +22,8 @@ Keyboard kb;  // Tastatur
 PCSPK pcspk;  // PC-Lautsprecher
 
 // BumpAllocator         allocator;
-// LinkedListAllocator allocator;
-TreeAllocator allocator;
+LinkedListAllocator allocator;
+// TreeAllocator allocator;
 Scheduler scheduler;
 
 unsigned int total_mem;  // RAM total

c_os/kernel/Globals.h

@@ -36,8 +36,8 @@ extern Keyboard kb;           // Tastatur
 extern PCSPK pcspk;           // PC-Lautsprecher
 
 // extern BumpAllocator         allocator;
-// extern LinkedListAllocator allocator;
-extern TreeAllocator allocator;
+extern LinkedListAllocator allocator;
+// extern TreeAllocator allocator;
 extern Scheduler scheduler;
 
 constexpr bool DEBUG = true;

c_os/kernel/Paging.cc

@@ -67,12 +67,6 @@
 #define FST_ALLOCABLE_PAGE 0x202000
 #define LST_ALLOCABLE_PAGE 0x2FF000
 
-// Externe Funktionen in startup.asm
-extern "C" {
-    void paging_on(unsigned int* p_pdir);          // Paging einschalten
-    void invalidate_tlb_entry(unsigned int* ptr);  // Page in TLB invalid.
-}
-
 /*****************************************************************************
  * Funktion:        pg_alloc_page                                            *
  *---------------------------------------------------------------------------*

c_os/kernel/Paging.h

@@ -52,6 +52,12 @@
 #ifndef __Paging_include__
 #define __Paging_include__
 
+// Externe Funktionen in startup.asm
+extern "C" {
+    void paging_on(unsigned int* p_pdir);          // Paging einschalten
+    void invalidate_tlb_entry(unsigned int* ptr);  // Page in TLB invalid.
+}
+
 // ativiert paging
 extern void pg_init();
 

c_os/main.cc

@@ -13,10 +13,17 @@
 #include "kernel/Globals.h"
 #include "kernel/Paging.h"
 #include "kernel/threads/IdleThread.h"
+#include "lib/Input.h"
+#include "user/BlueScreenDemo.h"
 #include "user/CoopThreadDemo.h"
+#include "user/HeapDemo.h"
 #include "user/HelloWorldThread.h"
+#include "user/KeyboardDemo.h"
+#include "user/KeyIRQDemo.h"
 #include "user/PCSPKdemo.h"
 #include "user/PreemptiveThreadDemo.h"
+#include "user/SoundDemo.h"
+#include "user/TextDemo.h"
 #include "user/VBEdemo.h"
 
 int main() {
@@ -54,39 +61,45 @@ int main() {
     // This has to happen after the allocator is initialized but before the scheduler is started
     pg_init();
 
-    // TODO: Move this to demo
-    // Trigger Bluescreen
-    // kout << "Trigger Bluescreen, if you can read this it didn't work" << endl;
+    kout << "Demos:\n"
+         << "1 - VBEdemo\n"
+         << "2 - PCSPKdemo\n"
+         << "3 - PreemptiveThreadDemo\n"
+         << "4 - BlueScreenDemo\n"
+         << "5 - HeapDemo\n"
+         << "6 - KeyboardDemo\n"
+         << "7 - TextDemo" << endl;
 
-    // BlueScreen 1
-    // asm("int $3");
-
-    // BlueScreen 2
-    // unsigned int* page = pg_alloc_page();
-    // *page = 42;
-    // pg_write_protect_page(page);
-    // 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)
-    // *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
-
-    // TODO: Make menu for demos
-    // Demo threads anlegen
+    char input = getch();
+    switch (input) {
+    case '1':
+        scheduler.ready(new VBEdemo());  // Switch to VESA graphics mode
+        break;
+    case '2':
+        scheduler.ready(new PCSPKdemo());
+        break;
+    case '3':
+        scheduler.ready(new PreemptiveThreadDemo());
+        break;
+    case '4':
+        bluescreen_demo();
+        break;
+    case '5':
+        heap_demo();
+        break;
+    case '6':
+        keyboard_demo();
+        break;
+    case '7':
+        text_demo();
+        break;
+    }
     // scheduler.ready(new HelloWorldThread());
     // scheduler.ready(new CoopThreadDemo());
-    // scheduler.ready(new VBEdemo()); // Switch to VESA graphics mode
-    // scheduler.ready(new PCSPKdemo());
-    scheduler.ready(new PreemptiveThreadDemo());
 
     // Scheduler starten (schedule() erzeugt den Idle-Thread)
     scheduler.schedule();
 
-    // TODO: Use templates for queue so threads don't have to be casted down from chain
-    // TODO: Change scheduler to only use references instead of pointers
-    // TODO: Rewrite all demos to threads
-    // TODO: Unify debug output format
-    // TODO: Serial output, output graphviz dot data for memory etc.
-
     // Scheduler doesn't return
     return 0;
 }

c_os/user/BlueScreenDemo.cc

@@ -0,0 +1,21 @@
+#include "user/BlueScreenDemo.h"
+#include "kernel/Globals.h"
+#include "kernel/Paging.h"
+
+void bluescreen_demo() {
+
+    // Trigger Bluescreen
+    kout << "Trigger Bluescreen, if you can read this it didn't work" << endl;
+
+    // BlueScreen 1
+    // asm("int $3");
+
+    // BlueScreen 2
+    unsigned int* page = pg_alloc_page();
+    *page = 42;
+    pg_write_protect_page(page);
+    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)
+    *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
+}

c_os/user/BlueScreenDemo.h

@@ -0,0 +1,6 @@
+#ifndef __BluescreenDemo_Include_H_
+#define __BluescreenDemo_Include_H_
+
+void bluescreen_demo();
+
+#endif