Function PageFaultHandler

Kernel/src/arch/x86_64/paging.cpp:578–657

	}

	void PageFaultHandler(void*, regs64_t* regs)
	{
		asm("cli");
		write_serial_n("Page Fault\r\n", 12);
		Log::SetVideoConsole(nullptr);

		int err_code = IDT::GetErrCode();

		uint64_t faultAddress;
		asm volatile("movq %%cr2, %0" : "=r" (faultAddress));

		int present = !(err_code & 0x1); // Page not present
		int rw = err_code & 0x2;           // Attempted write to read only page
		int us = err_code & 0x4;           // Processor was in user-mode and tried to access kernel page
		int reserved = err_code & 0x8;     // Overwritten CPU-reserved bits of page entry
		int id = err_code & 0x10;          // Caused by an instruction fetch

		if (present)
			Log::Info("Page not present"); // Print fault to serial
		if (rw)
			Log::Info("Read Only");
		if (us)
			Log::Info("User mode process tried to access kernel memory");
		if (reserved)
			Log::Info("Reserved");
		if (id)
			Log::Info("instruction fetch");

		Log::Info("RIP:");

		Log::Info(regs->rip);

		Log::Info("Process:");
		Log::Info(Scheduler::GetCurrentProcess()->pid);

		Log::Info("\r\nFault address: ");
		Log::Info(faultAddress);

		Log::Info("Register Dump: a: ");
		Log::Write(regs->rax);
		Log::Write(", b:");
		Log::Write(regs->rbx);
		Log::Write(", c:");
		Log::Write(regs->rcx);
		Log::Write(", d:");
		Log::Write(regs->rdx);
		Log::Write(", S:");
		Log::Write(regs->rsi);
		Log::Write(", D:");
		Log::Write(regs->rdi);
		Log::Write(", sp:");
		Log::Write(regs->rsp);
		Log::Write(", bp:");
		Log::Write(regs->rbp);

		if((regs->ss & 0x3)){
			Log::Warning("Process %s crashed, PID: ", Scheduler::GetCurrentProcess()->name);
			Log::Write(Scheduler::GetCurrentProcess()->pid);