106 lines
2.3 KiB
C++
106 lines
2.3 KiB
C++
/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2011, 2013.
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This file is part of Sortix.
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Sortix is free software: you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation, either version 3 of the License, or (at your option) any later
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version.
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Sortix is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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details.
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You should have received a copy of the GNU General Public License along with
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Sortix. If not, see <http://www.gnu.org/licenses/>.
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panic.cpp
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Displays an error whenever something critical happens.
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*******************************************************************************/
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#include <brand.h>
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#include <string.h>
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#include <sortix/kernel/calltrace.h>
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#include <sortix/kernel/interrupt.h>
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#include <sortix/kernel/kernel.h>
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#include <sortix/kernel/log.h>
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#include <sortix/kernel/panic.h>
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namespace Sortix {
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#if defined(PANIC_SHORT)
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const bool longpanic = false;
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#else
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const bool longpanic = true;
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#endif
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static bool panicing = false;
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static bool doublepanic = false;
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static void PanicLogoLong()
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{
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Log::PrintF(BRAND_PANIC_LONG);
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}
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static void PanicLogoShort()
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{
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Log::Print(BRAND_PANIC_SHORT);
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}
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void PanicInit()
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{
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Interrupt::Disable();
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// Handle the case where the panic code caused another system crash.
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if ( panicing )
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{
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Log::PrintF("Panic while panicing:\n");
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doublepanic = true;
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return;
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}
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panicing = true;
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// Render a notice that the system has crashed and forcefully shut down.
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longpanic ? PanicLogoLong() : PanicLogoShort();
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}
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static void PanicCalltrace()
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{
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Log::Print("\n");
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Calltrace::Perform();
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}
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static void PanicHooks()
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{
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if ( doublepanic )
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return;
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if ( ENABLE_CALLTRACE )
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PanicCalltrace();
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}
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extern "C" __attribute__((noreturn)) void Panic(const char* error)
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{
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PanicInit();
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Log::Print(error);
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PanicHooks();
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HaltKernel();
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}
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extern "C" __attribute__((noreturn)) void PanicF(const char* format, ...)
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{
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PanicInit();
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va_list list;
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va_start(list, format);
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Log::PrintFV(format, list);
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va_end(list);
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PanicHooks();
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HaltKernel();
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}
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} // namespace Sortix
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