public static void Setup()
{
// At this stage, allocating memory does not work, so you are only allowed to use ValueTypes or static classes.
IDT.SetInterruptHandler(null);
Panic.Setup();
Debugger.Setup(Serial.COM1);
// Initialize interrupts
PIC.Setup();
IDT.Setup();
// Initializing the memory management
Multiboot.Setup();
GDT.Setup();
PageFrameAllocator.Setup();
PageTable.Setup();
VirtualPageAllocator.Setup();
GC.Setup();
// At this point we can use objects
Scheduler.Setup();
SmbiosManager.Setup();
ConsoleManager.Setup();
Internal.Setup();
}
public static void Setup()
{
// Initialize GDT before IDT, because IDT Entries requires a valid Segment Selector
Multiboot.Setup();
GDT.Setup();
// At this stage, allocating memory does not work, so you are only allowed to use ValueTypes or static classes.
IDT.SetInterruptHandler(null);
Panic.Setup();
// Initialize interrupts
PIC.Setup();
IDT.Setup();
// Initializing the memory management
PageFrameAllocator.Setup();
PageTable.Setup();
VirtualPageAllocator.Setup();
GC.Setup();
// At this point we can use objects
Scheduler.Setup();
SmbiosManager.Setup();
ConsoleManager.Setup();
Logger.Log("Kernel initialized");
}
public static void Setup()
{
// Initialize GDT before IDT, because IDT Entries requies a valid Segment Selector
// This never happend before, because on fast computers GDT.Setup() was called
// before a Interrupt,for example clock, got triggered.
Multiboot.Setup();
GDT.Setup();
// At this stage, allocating memory does not work, so you are only allowed to use ValueTypes or static classes.
IDT.SetInterruptHandler(null);
Panic.Setup();
Debugger.Setup(Serial.COM1);
// Initialize interrupts
PIC.Setup();
IDT.Setup();
// Initializing the memory management
PageFrameAllocator.Setup();
PageTable.Setup();
VirtualPageAllocator.Setup();
GC.Setup();
// At this point we can use objects
Scheduler.Setup();
SmbiosManager.Setup();
ConsoleManager.Setup();
Internal.Setup();
}
private static void SwitchToThread(uint threadID)
{
var thread = Threads[threadID];
//Assert.True(thread != null, "invalid thread id");
thread.Ticks++;
SetThreadID(threadID);
PIC.SendEndOfInterrupt(ClockIRQ);
Native.InterruptReturn((uint)thread.StackStatePointer.ToInt32());
}
/// <summary>
/// Interrupts the handler.
/// </summary>
/// <param name="stackStatePointer">The stack state pointer.</param>
private unsafe static void ProcessInterrupt(uint stackStatePointer)
{
//KernelMessage.WriteLine("Interrupt occured");
var stack = (IDTStack *)stackStatePointer;
var irq = stack->Interrupt;
var info = IDTManager.handlers[irq];
IDTManager.RaisedCount++;
if (info.CountStatistcs)
{
IDTManager.RaisedCountCustom++;
}
if (info.Trace)
{
KernelMessage.WriteLine("Interrupt: {0}", irq);
}
var col = Screen.column;
var row = Screen.row;
Screen.column = 0;
Screen.Goto(2, 35);
Screen.Write("Interrupts: ");
Screen.Write(IDTManager.RaisedCount);
Screen.Goto(3, 35);
Screen.Write("IntNoClock: ");
Screen.Write(IDTManager.RaisedCountCustom);
Screen.row = row;
Screen.column = col;
if (irq < 0 || irq > 255)
{
Panic.Error("Invalid Interrupt");
}
if (info.Handler == null)
{
//Panic.Error("Handlr is null");
}
else
{
}
info.Handler(stack);
PIC.SendEndOfInterrupt(irq);
}
/// <summary>
/// Interrupts the handler.
/// </summary>
/// <param name="edi">The edi.</param>
/// <param name="esi">The esi.</param>
/// <param name="ebp">The ebp.</param>
/// <param name="esp">The esp.</param>
/// <param name="ebx">The ebx.</param>
/// <param name="edx">The edx.</param>
/// <param name="ecx">The ecx.</param>
/// <param name="eax">The eax.</param>
/// <param name="interrupt">The interrupt.</param>
/// <param name="errorcode">The errorcode.</param>
private static void InterruptHandler(uint edi, uint esi, uint ebp, uint esp, uint ebx, uint edx, uint ecx, uint eax, uint interrupt, uint errorCode)
{
uint c = Screen.Column;
uint r = Screen.Row;
byte col = Screen.Color;
Screen.Column = 30;
Screen.Row = 0;
Screen.Color = 3;
_counter++;
Screen.Write(_counter, 10, 8);
Screen.Write(':');
Screen.Write(interrupt, 16, 2);
if (interrupt == 14)
{
// Page Fault!
PageFaultHandler.Fault(errorCode);
}
if (interrupt == 0x20)
{
// Timer Interrupt! Switch Tasks!
}
else
{
Screen.Write(':');
Screen.Write(_counter, 10, 8);
Screen.Write(':');
Screen.Write(interrupt, 16, 2);
Screen.Write('-');
Screen.Write(errorCode, 16, 2);
if (interrupt == 0x21)
{
byte scancode = Keyboard.ReadScanCode();
Screen.Write('-');
Screen.Write(scancode, 16, 2);
}
}
Screen.Column = c;
Screen.Row = r;
Screen.Color = col;
PIC.SendEndOfInterrupt((byte)interrupt);
}
/// <summary>
/// Switches the specified esp.
/// </summary>
/// <param name="nexttask">The nexttask.</param>
public static void Switch(uint nexttask)
{
PIC.SendEndOfInterrupt(0x20);
// Update current task
currenttask = nexttask;
// Get Stack Slot Location
uint task = GetTaskLocation(currenttask);
// Get Stack location
uint esp = Native.Get32(task + Offset.ESP);
// Switch task
Native.SwitchTask(esp);
// will never reach here
}
public static void Setup()
{
SmbiosManager.Setup();
Screen.Clear();
Screen.Color = 0x0E;
Screen.Goto(24, 0);
Screen.Write('1');
Multiboot.Setup();
Screen.Goto(24, 1);
Screen.Write('2');
PIC.Setup();
Screen.Goto(24, 2);
Screen.Write('3');
GDT.Setup();
Screen.Goto(24, 3);
Screen.Write('4');
IDT.Setup();
Screen.Goto(24, 4);
Screen.Write('5');
PageFrameAllocator.Setup();
Screen.Goto(24, 5);
Screen.Write('6');
PageTable.Setup();
Screen.Goto(24, 6);
Screen.Write('7');
VirtualPageAllocator.Setup();
Screen.Goto(24, 7);
Screen.Write('8');
Screen.Goto(24, 8);
ProcessManager.Setup();
Screen.Write('9');
Screen.Goto(24, 9);
TaskManager.Setup();
Screen.Write('A');
Screen.Goto(24, 10);
SmbiosManager.Setup();
}
/// <summary>
/// Interrupts the handler.
/// </summary>
/// <param name="stackStatePointer">The stack state pointer.</param>
private unsafe static void ProcessInterrupt(uint stackStatePointer)
{
var stack = (IDTStack *)stackStatePointer;
Debugger.Process(stack);
switch (stack->Interrupt)
{
case 0:
Error(stack, "Divide Error");
break;
case 4:
Error(stack, "Arithmetic Overflow Exception");
break;
case 5:
Error(stack, "Bound Check Error");
break;
case 6:
Error(stack, "Invalid Opcode");
break;
case 7:
Error(stack, "Co-processor Not Available");
break;
case 8:
//TODO: Analyze the double fault
Error(stack, "Double Fault");
break;
case 9:
Error(stack, "Co-processor Segment Overrun");
break;
case 10:
Error(stack, "Invalid TSS");
break;
case 11:
Error(stack, "Segment Not Present");
break;
case 12:
Error(stack, "Stack Exception");
break;
case 13:
Error(stack, "General Protection Exception");
break;
case 14:
// Check if Null Pointer Exception
// Otherwise handle as Page Fault
var cr2 = Native.GetCR2();
if ((cr2 >> 5) < 0x1000)
{
Error(stack, "Null Pointer Exception");
}
if (cr2 >= 0xF0000000u)
{
Error(stack, "Invalid Access Above 0xF0000000");
break;
}
var physicalpage = PageFrameAllocator.Allocate();
if (physicalpage == IntPtr.Zero)
{
Error(stack, "Out of Memory");
break;
}
PageTable.MapVirtualAddressToPhysical(cr2, (uint)physicalpage.ToInt32());
break;
case 16:
Error(stack, "Co-processor Error");
break;
case 19:
Error(stack, "SIMD Floating-Point Exception");
break;
case Scheduler.ClockIRQ:
Interrupt?.Invoke(stack->Interrupt, stack->ErrorCode);
Scheduler.ClockInterrupt(new IntPtr(stackStatePointer));
break;
case Scheduler.ThreadTerminationSignalIRQ:
Scheduler.TerminateCurrentThread();
break;
default:
{
Interrupt?.Invoke(stack->Interrupt, stack->ErrorCode);
break;
}
}
PIC.SendEndOfInterrupt(stack->Interrupt);
}
/// <summary>
/// Interrupts the handler.
/// </summary>
/// <param name="stack">The stack.</param>
private unsafe static void ProcessInterrupt(IDTStack *stack)
{
DebugClient.Process();
switch (stack->Interrupt)
{
case 0:
Error(stack->EBP, stack->EIP, "Divide Error");
break;
case 4:
Error(stack->EBP, stack->EIP, "Arithmetic Overflow Exception");
break;
case 5:
Error(stack->EBP, stack->EIP, "Bound Check Error");
break;
case 6:
Error(stack->EBP, stack->EIP, "Invalid Opcode");
break;
case 7:
Error(stack->EBP, stack->EIP, "Co-processor Not Available");
break;
case 8:
//TODO: Analyze the double fault
Error(stack->EBP, stack->EIP, "Double Fault");
break;
case 9:
Error(stack->EBP, stack->EIP, "Co-processor Segment Overrun");
break;
case 10:
Error(stack->EBP, stack->EIP, "Invalid TSS");
break;
case 11:
Error(stack->EBP, stack->EIP, "Segment Not Present");
break;
case 12:
Error(stack->EBP, stack->EIP, "Stack Exception");
break;
case 13:
Error(stack->EBP, stack->EIP, "General Protection Exception");
break;
case 14:
// Check if Null Pointer Exception
// Otherwise handle as Page Fault
var cr2 = Native.GetCR2() >> 5;
if (cr2 < 0x1000)
{
Error(stack->EBP, stack->EIP, "Null Pointer Exception");
}
//spinLock.Enter(ref taken);
uint physicalpage = PageFrameAllocator.Allocate();
if (physicalpage == 0x0)
{
// Panic! Out of memory
Panic.SetStackPointer(stack->EBP, stack->EIP);
Panic.Error(cr2);
}
PageTable.MapVirtualAddressToPhysical(Native.GetCR2(), physicalpage);
//spinLock.Exit();
break;
case 16:
Error(stack->EBP, stack->EIP, "Co-processor Error");
break;
case 19:
Error(stack->EBP, stack->EIP, "SIMD Floating-Point Exception");
break;
default:
if (interruptHandler != null)
{
interruptHandler(stack->Interrupt, stack->ErrorCode);
}
break;
}
PIC.SendEndOfInterrupt(stack->Interrupt);
}
/// <summary>
/// Interrupts the handler.
/// </summary>
/// <param name="stack">The stack.</param>
private unsafe static void ProcessInterrupt(IDTStack *stack)
{
Debugger.Process(stack);
switch (stack->Interrupt)
{
case 0:
Error(stack, "Divide Error");
break;
case 4:
Error(stack, "Arithmetic Overflow Exception");
break;
case 5:
Error(stack, "Bound Check Error");
break;
case 6:
Error(stack, "Invalid Opcode");
break;
case 7:
Error(stack, "Co-processor Not Available");
break;
case 8:
//TODO: Analyze the double fault
Error(stack, "Double Fault");
break;
case 9:
Error(stack, "Co-processor Segment Overrun");
break;
case 10:
Error(stack, "Invalid TSS");
break;
case 11:
Error(stack, "Segment Not Present");
break;
case 12:
Error(stack, "Stack Exception");
break;
case 13:
Error(stack, "General Protection Exception");
break;
case 14:
// Check if Null Pointer Exception
// Otherwise handle as Page Fault
var cr2 = Native.GetCR2();
if ((cr2 >> 5) < 0x1000)
{
Error(stack, "Null Pointer Exception");
}
uint physicalpage = PageFrameAllocator.Allocate();
if (physicalpage == 0x0)
{
Error(stack, "Out of Memory");
}
PageTable.MapVirtualAddressToPhysical(cr2, physicalpage);
break;
case 16:
Error(stack, "Co-processor Error");
break;
case 19:
Error(stack, "SIMD Floating-Point Exception");
break;
default:
interruptHandler?.Invoke(stack->Interrupt, stack->ErrorCode);
break;
}
PIC.SendEndOfInterrupt(stack->Interrupt);
}
/// <summary>
/// Interrupts the handler.
/// </summary>
/// <param name="stack">The stack.</param>
private unsafe static void ProcessInterrupt(IDTStack *stack)
{
DebugClient.Process();
switch (stack->Interrupt)
{
case 0:
Error(stack->EBP, stack->EIP, "Divide Error");
break;
case 4:
Error(stack->EBP, stack->EIP, "Arithmetic Overflow Exception");
break;
case 5:
Error(stack->EBP, stack->EIP, "Bound Check Error");
break;
case 6:
Error(stack->EBP, stack->EIP, "Invalid Opcode");
break;
case 7:
Error(stack->EBP, stack->EIP, "Coprocessor Not Available");
break;
case 8:
//TODO: Analyze the double fault
Error(stack->EBP, stack->EIP, "Double Fault");
break;
case 9:
Error(stack->EBP, stack->EIP, "Coprocessor Segment Overrun");
break;
case 10:
Error(stack->EBP, stack->EIP, "Invalid TSS");
break;
case 11:
Error(stack->EBP, stack->EIP, "Segment Not Present");
break;
case 12:
Error(stack->EBP, stack->EIP, "Stack Exception");
break;
case 13:
Error(stack->EBP, stack->EIP, "General Protection Exception");
break;
case 14:
// Page Fault!
var cr2 = Native.GetCR2() >> 5;
if (cr2 < 0x1000)
{
Error(stack->EBP, stack->EIP, "Null Pointer Exception");
break;
}
//PageFaultHandler.Fault(errorCode);
Panic.SetStackPointer(stack->EBP, stack->EIP);
Panic.Error(cr2);
break;
case 16:
Error(stack->EBP, stack->EIP, "Coprocessor Error");
break;
case 19:
Error(stack->EBP, stack->EIP, "SIMD Floating-Point Exception");
break;
default:
if (interruptHandler != null)
{
interruptHandler(stack->Interrupt, stack->ErrorCode);
}
break;
}
PIC.SendEndOfInterrupt(stack->Interrupt);
}
/// <summary>
/// Interrupts the handler.
/// </summary>
/// <param name="edi">The edi.</param>
/// <param name="esi">The esi.</param>
/// <param name="ebp">The ebp.</param>
/// <param name="esp">The esp.</param>
/// <param name="ebx">The ebx.</param>
/// <param name="edx">The edx.</param>
/// <param name="ecx">The ecx.</param>
/// <param name="eax">The eax.</param>
/// <param name="interrupt">The interrupt.</param>
/// <param name="errorCode">The error code.</param>
private static void ProcessInterrupt(uint edi, uint esi, uint ebp, uint esp, uint ebx, uint edx, uint ecx, uint eax, uint interrupt, uint errorCode, uint eip, uint cs, uint eflags)
{
DebugClient.Process();
switch (interrupt)
{
case 0:
Error(ebp, eip, "Divide Error");
break;
case 4:
Error(ebp, eip, "Arithmetic Overflow Exception");
break;
case 5:
Error(ebp, eip, "Bound Check Error");
break;
case 6:
Error(ebp, eip, "Invalid Opcode");
break;
case 7:
Error(ebp, eip, "Coprocessor Not Available");
break;
case 8:
//TODO: Analyze the double fault
Error(ebp, eip, "Double Fault");
break;
case 9:
Error(ebp, eip, "Coprocessor Segment Overrun");
break;
case 10:
Error(ebp, eip, "Invalid TSS");
break;
case 11:
Error(ebp, eip, "Segment Not Present");
break;
case 12:
Error(ebp, eip, "Stack Exception");
break;
case 13:
Error(ebp, eip, "General Protection Exception");
break;
case 14:
// Page Fault!
var cr2 = Native.GetCR2() >> 5;
if (cr2 < 0x1000)
{
Error(ebp, eip, "Null Pointer Exception");
break;
}
PageFaultHandler.Fault(errorCode);
break;
case 16:
Error(ebp, eip, "Coprocessor Error");
break;
case 19:
Error(ebp, eip, "SIMD Floating-Point Exception");
break;
default:
if (interruptHandler != null)
{
interruptHandler(interrupt, errorCode);
}
break;
}
PIC.SendEndOfInterrupt(interrupt);
}
