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- // $Id: CodeCache.C,v 1.9 1998/03/25 12:42:36 zeller Exp $ -*- C++ -*-
- // Machine Code Cache
-
- // Copyright (C) 1995 Technische Universitaet Braunschweig, Germany.
- // Written by Andreas Zeller <zeller@ips.cs.tu-bs.de>.
- //
- // This file is part of DDD.
- //
- // DDD 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.
- //
- // DDD 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 DDD -- see the file COPYING.
- // If not, write to the Free Software Foundation, Inc.,
- // 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- //
- // DDD is the data display debugger.
- // For details, see the DDD World-Wide-Web page,
- // `http://www.cs.tu-bs.de/softech/ddd/',
- // or send a mail to the DDD developers <ddd@ips.cs.tu-bs.de>.
-
- char CodeCache_rcsid[] =
- "$Id: CodeCache.C,v 1.9 1998/03/25 12:42:36 zeller Exp $";
-
- #ifdef __GNUG__
- #pragma implementation
- #pragma implementation "VarArray.h"
- #pragma implementation "DynArray.h"
- #endif
-
- #include <Xm/Xm.h>
- #include "CodeCache.h"
-
- // Return digit value
- inline int xdigit(char c)
- {
- switch (c)
- {
- case '0': return 0;
- case '1': return 1;
- case '2': return 2;
- case '3': return 3;
- case '4': return 4;
- case '5': return 5;
- case '6': return 6;
- case '7': return 7;
- case '8': return 8;
- case '9': return 9;
- case 'a': case 'A': return 10;
- case 'b': case 'B': return 11;
- case 'c': case 'C': return 12;
- case 'd': case 'D': return 13;
- case 'e': case 'E': return 14;
- case 'f': case 'F': return 15;
- default: return -1;
- }
- }
-
- // Compare addresses:
- // return Z such that Z < 0 if X < Y, Z == 0 if X == Y, Z > 0 if X > Y
- int compare_address(const string& x, const string& y)
- {
- unsigned int px = 0;
- unsigned int py = 0;
-
- while (px < x.length() && is_leading_zero(x[px]))
- px++;
- while (py < y.length() && is_leading_zero(y[py]))
- py++;
-
- unsigned int lx = x.length() - px;
- unsigned int ly = y.length() - py;
-
- while (lx > 0 && is_trailing_zero(x[px + lx - 1]))
- lx--;
- while (ly > 0 && is_trailing_zero(y[py + ly - 1]))
- ly--;
-
- int ret = lx - ly;
- for (unsigned i = 0; ret == 0 && i < lx; i++)
- ret = xdigit(x[px + i]) - xdigit(y[py + i]);
-
- #if 0
- if (ret < 0)
- clog << x << " < " << y << "\n";
- else if (ret > 0)
- clog << x << " > " << y << "\n";
- else
- clog << x << " = " << y << "\n";
- #endif
-
- return ret;
- }
-