ladybird/Kernel/Panic.cpp
Luke cbbbc38f27 Kernel: Print panic backtrace to both the screen and serial
Previously it would only print the backtrace to serial, which would be
inaccessible if you don't have serial setup.
2021-08-04 20:14:54 +02:00

36 lines
976 B
C++

/*
* Copyright (c) 2021, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/Format.h>
#include <Kernel/Arch/x86/Processor.h>
#include <Kernel/CommandLine.h>
#include <Kernel/IO.h>
#include <Kernel/KSyms.h>
#include <Kernel/Panic.h>
namespace Kernel {
[[noreturn]] static void __shutdown()
{
// Note: This will invoke QEMU Shutdown, but for other platforms (or emulators),
// this has no effect on the system, so we still need to halt afterwards.
// We also try the Bochs/Old QEMU shutdown method, if the first didn't work.
IO::out16(0x604, 0x2000);
IO::out16(0xb004, 0x2000);
Processor::halt();
}
void __panic(const char* file, unsigned int line, const char* function)
{
critical_dmesgln("at {}:{} in {}", file, line, function);
dump_backtrace(PrintToScreen::Yes);
if (kernel_command_line().boot_mode() == BootMode::SelfTest)
__shutdown();
else
Processor::halt();
}
}