divbyzerofault.c

Linux下的类似softice的调试工具

/******************************************************************************
 *
 * Copyright (c) 2003 Gerhard W. Gruber
 *
 * PROJECT: pICE
 * $Source: /cvsroot/pice/pice/module/divbyzerofault.c,v $
 * $Revision: 1.3 $
 * $Date: 2004/02/17 23:07:36 $
 * $Author: lightweave $
 * $Name:  $
 *
 * $Log: divbyzerofault.c,v $
 * Revision 1.3  2004/02/17 23:07:36  lightweave
 *
 * Improved the DEBUG facillity and replaced the configuration handler with a
 * new code which now can read MS Windows INI style files. See CHANGES.txt for
 * more details.
 * Also added a macro which prevents compiling for kernels before 2.4.19.
 *
 * Revision 1.2  2003/06/18 22:00:22  lightweave
 * DEBUG and DEBUG_SERIAL added
 *
 *
 *****************************************************************************/

static char *ident = "$Header: /cvsroot/pice/pice/module/divbyzerofault.c,v 1.3 2004/02/17 23:07:36 lightweave Exp $";


/*++

Copyright (c) 1998-2001 Klaus P. Gerlicher

Module Name:

    divbyzerofault.c

Abstract:

    handle divide by zero on x86

Environment:

    Kernel mode only

Author: 

    Klaus P. Gerlicher

Revision History:

    07-Mar-2001:	created

Copyright notice:

  This file may be distributed under the terms of the GNU Public License.

--*/

////////////////////////////////////////////////////
// INCLUDES
////
#include "remods.h"

#include "precomp.h"

////////////////////////////////////////////////////
// DEFINES
////
#define DIVIDE_BY_ZERO_VECTOR (0x00)

////////////////////////////////////////////////////
// GLOBALS
////
ULONG OldDivideByZeroHandler = 0;

////////////////////////////////////////////////////
// FUNCTIONS
////

//************************************************************************* 
// HandleDivideByZeroFault() 
// 
//************************************************************************* 
void HandleDivideByZeroFault(EXCEPTION_FRAME* pFrame)
{
	DECL_TEMP;
    LPSTR pSymbolName;

	ALLOC_TEMP(1024);
#ifdef ACTIVATE_SYMBOL_LOOKUP
    if( FindSymbolByAddress(&pSymbolName,GetLinearAddress(pFrame->cs,pFrame->eip)) )
    	PICE_sprintf(TEMP,"pICE: Breakpoint due to division by zero at %.4X:%.8X (%s)\n",pFrame->cs,pFrame->eip,pSymbolName); 
    else
#endif // ACTIVATE_SYMBOL_LOOKUP
    	PICE_sprintf(TEMP,"pICE: Breakpoint due to division by zero at %.4X:%.8X\n",pFrame->cs,pFrame->eip); 
	Print(OUTPUT_WINDOW,TEMP); 
	FREE_TEMP();
}

//************************************************************************* 
// InstallDivideByZeroHook() 
// 
//************************************************************************* 
void InstallDivideByZeroHook(void)
{
#ifdef ACTIVATE_DIVIDE_BY_ZERO_HOOK
	ENTER_FUNC();

	if(!OldDivideByZeroHandler)
	{
		HookInterruptVector(DIVIDE_BY_ZERO_VECTOR,(PVOID)&DebuggerDivideByZeroFault,(PVOID)&OldDivideByZeroHandler);
	}

    LEAVE_FUNC();
#endif // ACTIVATE_DIVIDE_BY_ZERO_HOOK
}

//************************************************************************* 
// DeInstallDivideByZeroHook() 
// 
//************************************************************************* 
void DeInstallDivideByZeroHook(void)
{
#ifdef ACTIVATE_DIVIDE_BY_ZERO_HOOK
	ENTER_FUNC();

	if(OldDivideByZeroHandler)
	{
		HookInterruptVector(DIVIDE_BY_ZERO_VECTOR,(PVOID)OldDivideByZeroHandler,NULL);
	}

    LEAVE_FUNC();
#endif // ACTIVATE_DIVIDE_BY_ZERO_HOOK
}

// EOF