private static unsafe void Error(IDTStack* stack, string message)
{
Panic.ESP = stack->ESP;
Panic.EBP = stack->EBP;
Panic.EIP = stack->EIP;
Panic.EAX = stack->EAX;
Panic.EBX = stack->EBX;
Panic.ECX = stack->ECX;
Panic.EDX = stack->EDX;
Panic.EDI = stack->EDI;
Panic.ESI = stack->ESI;
Panic.CS = stack->CS;
Panic.ErrorCode = stack->ErrorCode;
Panic.EFLAGS = stack->EFLAGS;
Panic.Interrupt = stack->Interrupt;
Panic.Error(message);
}
/// <summary>
/// Interrupts the handler.
/// </summary>
/// <param name="stack">The stack.</param>
private static unsafe 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 static unsafe 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:
// 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");
//bool taken = false;
//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, "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="stack">The stack.</param>
private static unsafe 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);
}
internal static unsafe void Process(IDTStack* stack)
{
idt_stack = stack;
Process();
}