alignment.c

一个类似与Windows环境下的softice的源代码

/******************************************************************************
 *
 * Copyright (c) 2003 Gerhard W. Gruber
 *
 * PROJECT: pICE
 * $Source: /cvsroot/pice/pice/module/alignment.c,v $
 * $Revision: 1.3 $
 * $Date: 2004/02/17 23:07:36 $
 * $Author: lightweave $
 * $Name:  $
 *
 * $Log: alignment.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 22:00:21  lightweave
 * DEBUG and DEBUG_SERIAL added
 *
 *
 *****************************************************************************/

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

/*++

Copyright (c) 1998-2001 Klaus P. Gerlicher

Module Name:

    alignment.c

Abstract:

Environment:

    Kernel mode only

Author:

    Klaus P. Gerlicher

Revision History:

    14-Oct-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 ALIGNMENT_VECTOR (0x11)

////////////////////////////////////////////////////
// GLOBALS
////
ULONG ulOldAlignmentHandler=0;

ULONG ulCountUnaligned = 0;

//************************************************************************* 
// HandleAlignmentFault() 
// 
//************************************************************************* 
void HandleAlignmentFault(EXCEPTION_FRAME* pFrame)
{
	ulCountUnaligned++;
}

//************************************************************************* 
// InstallAlignmentHook() 
// 
//************************************************************************* 
BOOLEAN InstallAlignmentHook(void)
{
#ifdef ACTIVATE_ALIGNMENT_HOOK
   void DebuggerAlignment(void);

   DPRINT(PICE_DEBUG, DBT_ALIGNMENT, DBL_INFO, "InstallAlignmentHook(ulOldAlignmentHandler=%08x)...\n", ulOldAlignmentHandler);

   if(!ulOldAlignmentHandler)
   {
      HookInterruptVector(ALIGNMENT_VECTOR,(PVOID)&DebuggerAlignment,(PVOID)&ulOldAlignmentHandler);
   }
#endif // ACTIVATE_BREAKPOINT_HOOK
   return TRUE;
}

//************************************************************************* 
// DeInstallAlignmentHook() 
// 
//************************************************************************* 
void DeInstallAlignmentHook(void)
{
#ifdef ACTIVATE_BREAKPOINT_HOOK
   DPRINT(PICE_DEBUG, DBT_ALIGNMENT, DBL_INFO, "DeInstallTraceHook(ulOldAlignmentHandler=%08x)...\n",ulOldAlignmentHandler);

   if(ulOldAlignmentHandler)
   {
      HookInterruptVector(ALIGNMENT_VECTOR,(PVOID)&ulOldAlignmentHandler,NULL);
   }
#endif // ACTIVATE_BREAKPOINT_HOOK
}