AppleWin/source/Debugger/Debugger_Range.cpp

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/*
AppleWin : An Apple //e emulator for Windows
Copyright (C) 1994-1996, Michael O'Brien
Copyright (C) 1999-2001, Oliver Schmidt
Copyright (C) 2002-2005, Tom Charlesworth
Copyright (C) 2006-2010, Tom Charlesworth, Michael Pohoreski
AppleWin is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
AppleWin is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with AppleWin; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/* Description: Debugger Utility Range
*
* Author: Copyright (C) 2006-2010 Michael Pohoreski
*/
#include "StdAfx.h"
// Util - Range _______________________________________________________________
//===========================================================================
bool Range_CalcEndLen( const RangeType_t eRange
, const WORD & nAddress1, const WORD & nAddress2
, WORD & nAddressEnd_, int & nAddressLen_ )
{
bool bValid = false;
if (eRange == RANGE_HAS_LEN)
{
// BSAVE 2000,0 Len=0 End=n/a
// BSAVE 2000,1 Len=1 End=2000
// 0,FFFF [,)
// End = FFFE = Len-1
// Len = FFFF
nAddressLen_ = nAddress2;
unsigned int nTemp = nAddress1 + nAddressLen_ - 1;
if (nTemp > _6502_MEM_END)
nTemp = _6502_MEM_END;
nAddressEnd_ = nTemp;
bValid = true;
}
else
if (eRange == RANGE_HAS_END)
{
// BSAVE 2000:2000 Len=0, End=n/a
// BSAVE 2000:2001 Len=1, End=2000
// 0:FFFF [,]
// End = FFFF
// Len = 10000 = End+1
nAddressEnd_ = nAddress2;
nAddressLen_ = nAddress2 - nAddress1 + 1;
bValid = true;
}
return bValid;
}
//===========================================================================
RangeType_t Range_Get( WORD & nAddress1_, WORD & nAddress2_, const int iArg ) // =1
{
nAddress1_ = (unsigned) g_aArgs[ iArg ].nValue;
if (nAddress1_ > _6502_MEM_END)
nAddress1_ = _6502_MEM_END;
nAddress2_ = 0;
int nTemp = 0;
RangeType_t eRange = RANGE_MISSING_ARG_2;
if (g_aArgs[ iArg + 1 ].eToken == TOKEN_COMMA)
{
// 0,FFFF [,) // Note the mathematical range
// End = FFFE = Len-1
// Len = FFFF
eRange = RANGE_HAS_LEN;
nTemp = g_aArgs[ iArg + 2 ].nValue;
nAddress2_ = nTemp;
}
else
if (g_aArgs[ iArg + 1 ].eToken == TOKEN_COLON)
{
// 0:FFFF [,] // Note the mathematical range
// End = FFFF
// Len = 10000 = End+1
eRange = RANGE_HAS_END;
nTemp = g_aArgs[ iArg + 2 ].nValue;
// i.e.
// FFFF:D000
// 1 2 Temp
// FFFF D000
// FFFF
// D000
if (nAddress1_ > nTemp)
{
nAddress2_ = nAddress1_;
nAddress1_ = nTemp;
}
else
nAddress2_ = nTemp;
}
// .17 Bug Fix: D000,FFFF -> D000,CFFF (nothing searched!)
// if (nTemp > _6502_MEM_END)
// nTemp = _6502_MEM_END;
return eRange;
}