public static void Error(string message)
{
IDT.SetInterruptHandler(null);
Screen.BackgroundColor = Color.Blue;
Screen.Clear();
Screen.Goto(1, 0);
Screen.Color = Color.White;
Screen.Write("*** Kernel Panic ***");
if (firstError)
{
firstError = false;
}
else
{
Screen.Write(" (multiple)");
}
Screen.NextLine();
Screen.NextLine();
Screen.Write(message);
Screen.NextLine();
Screen.NextLine();
Screen.Write("REGISTERS:");
Screen.NextLine();
Screen.NextLine();
DumpRegisters();
Screen.NextLine();
Screen.Write("STACK TRACE:");
Screen.NextLine();
Screen.NextLine();
DumpStackTrace();
while (true)
{
// keep debugger running
unsafe
{
Debugger.Process(null);
}
//Native.Hlt();
}
}
/// <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)
{
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);
}
