org/jpc/luaextensions/HostMemory.java

   1 /*
   2     JPC-RR: A x86 PC Hardware Emulator
   3     Release 1
   4
   5     Copyright (C) 2007-2009 Isis Innovation Limited
   6     Copyright (C) 2009-2010 H. Ilari Liusvaara
   7
   8     This program is free software; you can redistribute it and/or modify
   9     it under the terms of the GNU General Public License version 2 as published by
  10     the Free Software Foundation.
  11
  12     This program is distributed in the hope that it will be useful,
  13     but WITHOUT ANY WARRANTY; without even the implied warranty of
  14     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15     GNU General Public License for more details.
  16
  17     You should have received a copy of the GNU General Public License along
  18     with this program; if not, write to the Free Software Foundation, Inc.,
  19     51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20
  21     Based on JPC x86 PC Hardware emulator,
  22     A project from the Physics Dept, The University of Oxford
  23
  24     Details about original JPC can be found at:
  25
  26     www-jpc.physics.ox.ac.uk
  27
  28 */
  29
  30 package org.jpc.luaextensions;
  31
  32 import mnj.lua.*;
  33
  34 import org.jpc.emulator.Clock;
  35 import org.jpc.emulator.PC;
  36 import org.jpc.emulator.pci.peripheral.VGACard;
  37 import org.jpc.emulator.DisplayController;
  38 import org.jpc.emulator.EventRecorder;
  39 import org.jpc.plugins.LuaPlugin;
  40
  41 //Locking this class is used for preventing termination and when terminating.
  42 public class HostMemory extends LuaPlugin.LuaResource
  43 {
  44     public void destroy()
  45     {
  46     }
  47
  48     private HostMemory(LuaPlugin plugin)
  49     {
  50         super(plugin);
  51     }
  52
  53     public static int luaCB_read(Lua l, LuaPlugin plugin)
  54     {
  55         PC p = plugin.getPC();
  56         if(p != null) {
  57             l.push(p.readHostMemory());
  58             return 1;
  59         }
  60         return 0;
  61     }
  62
  63     public static int luaCB_write(Lua l, LuaPlugin plugin)
  64     {
  65         if(l.type(1) != Lua.TSTRING) {
  66             l.error("Unexpected types to invoke");
  67             return 0;
  68         }
  69         PC p = plugin.getPC();
  70         if(p != null)
  71             p.writeHostMemory(l.value(1).toString());
  72         return 0;
  73     }
  74 }