trace.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/trace.c,v $
 * $Revision: 1.5 $
 * $Date: 2004/02/17 23:07:37 $
 * $Author: lightweave $
 * $Name:  $
 *
 * $Log: trace.c,v $
 * Revision 1.5  2004/02/17 23:07:37  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 1.4  2003/06/18 22:00:22  lightweave
 * DEBUG and DEBUG_SERIAL added
 *
 *
 *****************************************************************************/

static char *ident = "$Header: /cvsroot/pice/pice/module/trace.c,v 1.5 2004/02/17 23:07:37 lightweave Exp $";


/*++

Copyright (c) 1998-2001 Klaus P. Gerlicher

Module Name:

    trace.c

Abstract:

Environment:

    Kernel mode only

Author:

    Klaus P. Gerlicher

Revision History:

    19-Aug-1998:	created

Copyright notice:

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

--*/

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


#define SINGLE_STEP_VECTOR (0x01)

////////////////////////////////////////////////////
// GLOBALS
////
ULONG ulOldTraceHandler=0;

ULONG ulSingleStepCondition = 0;

//************************************************************************* 
// InstallTraceHook() 
// 
//************************************************************************* 
BOOLEAN InstallTraceHook(void)
{
#ifdef ACTIVATE_BREAKPOINT_HOOK
	ENTER_FUNC();
    DPRINT(PICE_DEBUG, DBT_TRACE, DBL_INFO,"InstallTraceHook(ulOldTraceHandler=%08uX)...\n", ulOldTraceHandler);

	if(!ulOldTraceHandler)
	{
		HookInterruptVector(SINGLE_STEP_VECTOR, (PVOID)&DebuggerTrace, (PVOID)&ulOldTraceHandler);
	}
#endif // ACTIVATE_BREAKPOINT_HOOK

	LEAVE_FUNC();
	return TRUE;
}

//************************************************************************* 
// DeInstallTraceHook() 
// 
//************************************************************************* 
void DeInstallTraceHook(void)
{
#ifdef ACTIVATE_BREAKPOINT_HOOK
	ENTER_FUNC();
	
	DPRINT(PICE_DEBUG, DBT_TRACE, DBL_INFO,"DeInstallTraceHook(ulOldTraceHandler=%08uX)...\n", ulOldTraceHandler);

	if(ulOldTraceHandler)
	{
		HookInterruptVector(SINGLE_STEP_VECTOR,(PVOID)ulOldTraceHandler,NULL);
	}
#endif // ACTIVATE_BREAKPOINT_HOOK
	LEAVE_FUNC();
}