/// <summary>
/// IRQ handler
/// </summary>
/// <param name="regsPtr">Pointer to registers</param>
public static unsafe void Handler(Regs *regsPtr)
{
int irqNum = regsPtr->IntNum;
if (handlers[irqNum] != null)
{
// Loop through handlers to see who has sent interrupt
for (int i = 0; i < IRQ_MAX_SHARING; i++)
{
if (handlers[irqNum][i] == null || handlers[irqNum][i]())
{
break;
}
}
}
LocalApic.SendEOI();
}
/// <summary>
/// ISR handler
/// </summary>
/// <param name="regsPtr">Pointer to registers</param>
public static unsafe void Handler(Regs *regsPtr)
{
int isrNum = regsPtr->IntNum;
// If the kernel caused this, do a panic
if (!Tasking.IsActive || Tasking.CurrentTask.PID == 0)
{
Panic.DoPanic(errorCodes[isrNum], regsPtr);
}
// Otherwise send a signal
else
{
#if ALWAYS_DO_PANIC
Panic.DoPanic(errorCodes[isrNum], regsPtr);
#else
Tasking.CurrentTask.ProcessSignal(isrToSignal[isrNum]);
#endif
}
}
/// <summary>
/// Does a kernel panic
/// </summary>
/// <param name="str">The message</param>
/// <param name="regsPtr">Registers</param>
public static unsafe void DoPanic(string str, Regs *regsPtr)
{
// Clear interrupts
CPU.CLI();
Console.Attribute = 0x4F;
// Empty screen with logo
#if CLEAR_SCREEN
Console.Clear();
Console.WriteLine("");
Console.WriteLine(" ____ _ ");
Console.WriteLine(" / ___|| |__ __ _ _ __ _ __ ___ _ __ ");
Console.WriteLine(" \\___ \\| '_ \\ / _` | '__| '_ \\ / _ \\ '_ \\ ");
Console.WriteLine(" ___) | | | | (_| | | | |_) | __/ | | |");
Console.WriteLine(" |____/|_| |_|\\__,_|_| | .__/ \\___|_| |_|");
Console.WriteLine(" |_| ");
Console.WriteLine("");
#endif
// Message
Console.WriteLine(str);
if (Tasking.IsActive)
{
Console.Write("\tPID: ");
Console.WriteNum(Tasking.CurrentTask.PID);
Console.Write("\tTID: ");
Console.WriteNum(Tasking.CurrentTask.CurrentThread.TID);
}
if (regsPtr != null)
{
Console.Write(" Errorcode: ");
Console.WriteHex(regsPtr->Error);
Console.Write('\n');
Console.Write('\n');
Console.Write("\tEAX ");
Console.WriteHex(regsPtr->EAX & 0xFFFFFFFF);
Console.Write(" EBX ");
Console.WriteHex(regsPtr->EBX & 0xFFFFFFFF);
Console.Write(" ECX ");
Console.WriteHex(regsPtr->ECX & 0xFFFFFFFF);
Console.Write(" EDX ");
Console.WriteHex(regsPtr->EDX & 0xFFFFFFFF);
Console.Write(" EDI ");
Console.WriteHex(regsPtr->EDI & 0xFFFFFFFF);
Console.Write(" ESI ");
Console.WriteHex(regsPtr->ESI & 0xFFFFFFFF);
Console.Write('\n');
Console.Write("\tCS ");
Console.WriteHex(regsPtr->CS & 0xFFFF);
Console.Write(" DS ");
Console.WriteHex(regsPtr->DS & 0xFFFF);
Console.Write(" ES ");
Console.WriteHex(regsPtr->ES & 0xFFFF);
Console.Write(" FS ");
Console.WriteHex(regsPtr->FS & 0xFFFF);
Console.Write(" GS ");
Console.WriteHex(regsPtr->GS & 0xFFFF);
Console.Write(" SS ");
Console.WriteHex(regsPtr->SS & 0xFFFF);
Console.Write('\n');
Console.Write("\tEBP ");
Console.WriteHex(regsPtr->EBP & 0xFFFFFFFF);
Console.Write(" ESP ");
Console.WriteHex(regsPtr->ESP & 0xFFFFFFFF);
Console.Write(" EIP ");
Console.WriteHex(regsPtr->EIP & 0xFFFFFFFF);
Console.Write(" CR2 ");
Console.WriteHex((int)Paging.FaultingAddress & 0xFFFFFFFF);
Console.Write(" EFlags ");
Console.WriteHex(regsPtr->EFlags & 0xFFFFFFFF);
Console.Write('\n');
}
// Only able to stacktrace if paging is available
if (Paging.CurrentDirectory != null)
{
Util.PrintStackTrace(10);
}
// HALT
CPU.HLT();
}