/**
 * PROJECT:         ExectOS
 * COPYRIGHT:       See COPYING.md in the top level directory
 * FILE:            xtoskrnl/ke/panic.cc
 * DESCRIPTION:     System shutdown and kernel panic mechanism
 * DEVELOPERS:      Rafal Kupiec <belliash@codingworkshop.eu.org>
 */

#include <xtos.hh>


/* Kernel Library */
namespace KE
{

/**
 * Halts the system.
 *
 * @return This routine does not return any value.
 *
 * @since XT 1.0
 */
XTAPI
VOID
Crash::HaltSystem(VOID)
{
    /* Enter infinite loop */
    for(;;)
    {
        /* Halt system */
        AR::CpuFunc::ClearInterruptFlag();
        AR::CpuFunc::Halt();
    }
}

/**
 * Crashes the system upon detecting a fatal error in which either it is unable to recover or continue to run system.
 *
 * @param Code
 *        Specifies the reason for the kernel panic.
 *
 * @return This routine does not return any value.
 *
 * @since XT 1.0
 */
XTAPI
VOID
Crash::Panic(IN ULONG Code)
{
    PanicEx(Code, 0, 0, 0, 0);
}

/**
 * Crashes the system upon detecting a fatal error in which either it is unable to recover or continue to run system.
 *
 * @param Code
 *        Specifies the reason for the kernel panic.
 *
 * @param Parameter1
 *        Supplies additional information about the kernel panic.
 *
 * @param Parameter2
 *        Supplies additional information about the kernel panic.
 *
 * @param Parameter3
 *        Supplies additional information about the kernel panic.
 *
 * @param Parameter4
 *        Supplies additional information about the kernel panic.
 *
 * @return This routine does not return any value.
 *
 * @since XT 1.0
 */
XTAPI
VOID
Crash::PanicEx(IN ULONG Code,
               IN ULONG_PTR Parameter1,
               IN ULONG_PTR Parameter2,
               IN ULONG_PTR Parameter3,
               IN ULONG_PTR Parameter4)
{
    KdPrint(L"Fatal System Error: 0x%08lx\nKernel Panic!\n\n", Code);
    HaltSystem();
}

} /* namespace */


/* TEMPORARY FOR COMPATIBILITY WITH C CODE */
XTCLINK
XTAPI
VOID
KeHaltSystem(VOID)
{
    KE::Crash::HaltSystem();
}

/* TEMPORARY FOR COMPATIBILITY WITH C CODE */
XTCLINK
XTAPI
VOID
KePanic(ULONG Code)
{
    KE::Crash::Panic(Code);
}