mirror of https://github.com/stella-emu/stella.git
747 lines
21 KiB
C++
747 lines
21 KiB
C++
//============================================================================
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//
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// SSSS tt lll lll
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// SS SS tt ll ll
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// SS tttttt eeee ll ll aaaa
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// SSSS tt ee ee ll ll aa
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// SS tt eeeeee ll ll aaaaa -- "An Atari 2600 VCS Emulator"
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// SS SS tt ee ll ll aa aa
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// SSSS ttt eeeee llll llll aaaaa
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//
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// Copyright (c) 1995-2014 by Bradford W. Mott, Stephen Anthony
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// and the Stella Team
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//
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// See the file "License.txt" for information on usage and redistribution of
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// this file, and for a DISCLAIMER OF ALL WARRANTIES.
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//
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// $Id$
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//============================================================================
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#include "bspf.hxx"
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#include <iostream>
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#include <fstream>
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#include <sstream>
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#include <map>
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#include "Version.hxx"
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#include "OSystem.hxx"
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#include "FrameBuffer.hxx"
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#include "FSNode.hxx"
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#include "Settings.hxx"
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#include "DebuggerDialog.hxx"
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#include "DebuggerParser.hxx"
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#include "StateManager.hxx"
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#include "Console.hxx"
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#include "System.hxx"
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#include "M6502.hxx"
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#include "Cart.hxx"
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#include "TIA.hxx"
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#include "CartDebug.hxx"
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#include "CartDebugWidget.hxx"
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#include "CartRamWidget.hxx"
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#include "CpuDebug.hxx"
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#include "RiotDebug.hxx"
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#include "TIADebug.hxx"
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#include "TiaInfoWidget.hxx"
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#include "TiaOutputWidget.hxx"
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#include "TiaZoomWidget.hxx"
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#include "EditTextWidget.hxx"
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#include "RomWidget.hxx"
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#include "Expression.hxx"
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#include "PackedBitArray.hxx"
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#include "YaccParser.hxx"
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#include "Debugger.hxx"
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Debugger* Debugger::myStaticDebugger = 0;
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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static const char* builtin_functions[][3] = {
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// { "name", "definition", "help text" }
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// left joystick:
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{ "_joy0left", "!(*SWCHA & $40)", "Left joystick moved left" },
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{ "_joy0right", "!(*SWCHA & $80)", "Left joystick moved right" },
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{ "_joy0up", "!(*SWCHA & $10)", "Left joystick moved up" },
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{ "_joy0down", "!(*SWCHA & $20)", "Left joystick moved down" },
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{ "_joy0button", "!(*INPT4 & $80)", "Left joystick button pressed" },
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// right joystick:
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{ "_joy1left", "!(*SWCHA & $04)", "Right joystick moved left" },
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{ "_joy1right", "!(*SWCHA & $08)", "Right joystick moved right" },
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{ "_joy1up", "!(*SWCHA & $01)", "Right joystick moved up" },
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{ "_joy1down", "!(*SWCHA & $02)", "Right joystick moved down" },
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{ "_joy1button", "!(*INPT5 & $80)", "Right joystick button pressed" },
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// console switches:
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{ "_select", "!(*SWCHB & $02)", "Game Select pressed" },
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{ "_reset", "!(*SWCHB & $01)", "Game Reset pressed" },
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{ "_color", "*SWCHB & $08", "Color/BW set to Color" },
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{ "_bw", "!(*SWCHB & $08)", "Color/BW set to BW" },
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{ "_diff0b", "!(*SWCHB & $40)", "Left diff. set to B (easy)" },
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{ "_diff0a", "*SWCHB & $40", "Left diff. set to A (hard)" },
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{ "_diff1b", "!(*SWCHB & $80)", "Right diff. set to B (easy)" },
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{ "_diff1a", "*SWCHB & $80", "Right diff. set to A (hard)" },
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// empty string marks end of list, do not remove
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{ 0, 0, 0 }
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};
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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// Names are defined here, but processed in YaccParser
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static const char* pseudo_registers[][2] = {
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// { "name", "help text" }
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{ "_bank", "Currently selected bank" },
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{ "_rwport", "Address at which a read from a write port occurred" },
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{ "_scan", "Current scanline count" },
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{ "_fcount", "Number of frames since emulation started" },
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{ "_cclocks", "Color clocks on current scanline" },
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{ "_vsync", "Whether vertical sync is enabled (1 or 0)" },
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{ "_vblank", "Whether vertical blank is enabled (1 or 0)" },
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// empty string marks end of list, do not remove
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{ 0, 0 }
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};
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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Debugger::Debugger(OSystem& osystem, Console& console)
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: DialogContainer(osystem),
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myConsole(console),
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mySystem(console.system()),
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myDialog(nullptr),
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myBreakPoints(nullptr),
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myReadTraps(nullptr),
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myWriteTraps(nullptr),
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myWidth(DebuggerDialog::kSmallFontMinW),
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myHeight(DebuggerDialog::kSmallFontMinH)
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{
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// Init parser
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myParser = make_ptr<DebuggerParser>(*this, osystem.settings());
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// Create debugger subsystems
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myCpuDebug = make_ptr<CpuDebug>(*this, myConsole);
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myCartDebug = make_ptr<CartDebug>(*this, myConsole, osystem);
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myRiotDebug = make_ptr<RiotDebug>(*this, myConsole);
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myTiaDebug = make_ptr<TIADebug>(*this, myConsole);
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myBreakPoints = new PackedBitArray(0x10000);
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myReadTraps = new PackedBitArray(0x10000);
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myWriteTraps = new PackedBitArray(0x10000);
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// Allow access to this object from any class
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// Technically this violates pure OO programming, but since I know
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// there will only be ever one instance of debugger in Stella,
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// I don't care :)
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myStaticDebugger = this;
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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Debugger::~Debugger()
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{
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for(auto& f: myFunctions)
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delete f.second;
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delete myBreakPoints;
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delete myReadTraps;
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delete myWriteTraps;
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myStaticDebugger = nullptr;
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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void Debugger::initialize()
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{
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const GUI::Size& s = myOSystem.settings().getSize("dbg.res");
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const GUI::Size& d = myOSystem.frameBuffer().desktopSize();
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myWidth = s.w; myHeight = s.h;
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// The debugger dialog is resizable, within certain bounds
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// We check those bounds now
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myWidth = BSPF_max(myWidth, (uInt32)DebuggerDialog::kSmallFontMinW);
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myHeight = BSPF_max(myHeight, (uInt32)DebuggerDialog::kSmallFontMinH);
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myWidth = BSPF_min(myWidth, (uInt32)d.w);
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myHeight = BSPF_min(myHeight, (uInt32)d.h);
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myOSystem.settings().setValue("dbg.res", GUI::Size(myWidth, myHeight));
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delete myBaseDialog; myBaseDialog = myDialog = nullptr;
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myDialog = new DebuggerDialog(myOSystem, *this, 0, 0, myWidth, myHeight);
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myBaseDialog = myDialog;
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myRewindManager = make_ptr<RewindManager>(myOSystem, myDialog->rewindButton());
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myCartDebug->setDebugWidget(&(myDialog->cartDebug()));
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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FBInitStatus Debugger::initializeVideo()
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{
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string title = string("Stella ") + STELLA_VERSION + ": Debugger mode";
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return myOSystem.frameBuffer().createDisplay(title, myWidth, myHeight);
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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bool Debugger::start(const string& message, int address)
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{
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if(myOSystem.eventHandler().enterDebugMode())
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{
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// This must be done *after* we enter debug mode,
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// so the message isn't erased
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ostringstream buf;
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buf << message;
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if(address > -1)
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buf << Common::Base::HEX4 << address;
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myDialog->message().setText(buf.str());
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return true;
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}
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return false;
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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bool Debugger::startWithFatalError(const string& message)
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{
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if(myOSystem.eventHandler().enterDebugMode())
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{
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// This must be done *after* we enter debug mode,
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// so the dialog is properly shown
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myDialog->showFatalMessage(message);
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return true;
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}
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return false;
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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void Debugger::quit(bool exitrom)
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{
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if(exitrom)
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myOSystem.eventHandler().handleEvent(Event::LauncherMode, 1);
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else
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myOSystem.eventHandler().leaveDebugMode();
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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string Debugger::autoExec()
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{
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ostringstream buf;
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// autoexec.stella is always run
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FilesystemNode autoexec(myOSystem.baseDir() + "autoexec.stella");
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buf << "autoExec():" << endl
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<< myParser->exec(autoexec) << endl;
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// Also, "romname.stella" if present
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FilesystemNode romname(myOSystem.romFile().getPathWithExt(".stella"));
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buf << myParser->exec(romname) << endl;
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// Init builtins
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for(int i = 0; builtin_functions[i][0] != 0; i++)
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{
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// TODO - check this for memory leaks
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int res = YaccParser::parse(builtin_functions[i][1]);
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if(res != 0) cerr << "ERROR in builtin function!" << endl;
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Expression* exp = YaccParser::getResult();
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addFunction(builtin_functions[i][0], builtin_functions[i][1], exp, true);
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}
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return buf.str();
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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const string Debugger::run(const string& command)
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{
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return myParser->run(command);
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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const string Debugger::invIfChanged(int reg, int oldReg)
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{
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string ret;
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bool changed = reg != oldReg;
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if(changed) ret += "\177";
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ret += Common::Base::toString(reg, Common::Base::F_16_2);
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if(changed) ret += "\177";
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return ret;
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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void Debugger::reset()
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{
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myCpuDebug->setPC(dpeek(0xfffc));
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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/* Element 0 of args is the address. The remaining elements are the data
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to poke, starting at the given address.
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*/
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string Debugger::setRAM(IntArray& args)
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{
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ostringstream buf;
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int count = args.size();
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int address = args[0];
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for(int i = 1; i < count; ++i)
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mySystem.poke(address++, args[i]);
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buf << "changed " << (count-1) << " location";
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if(count != 2)
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buf << "s";
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return buf.str();
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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void Debugger::saveState(int state)
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{
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mySystem.clearDirtyPages();
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unlockBankswitchState();
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myOSystem.state().saveState(state);
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lockBankswitchState();
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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void Debugger::loadState(int state)
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{
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mySystem.clearDirtyPages();
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unlockBankswitchState();
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myOSystem.state().loadState(state);
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lockBankswitchState();
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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int Debugger::step()
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{
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saveOldState();
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mySystem.clearDirtyPages();
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int cyc = mySystem.cycles();
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unlockBankswitchState();
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myOSystem.console().tia().updateScanlineByStep();
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lockBankswitchState();
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return mySystem.cycles() - cyc;
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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// trace is just like step, except it treats a subroutine call as one
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// instruction.
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// This implementation is not perfect: it just watches the program counter,
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// instead of tracking (possibly) nested JSR/RTS pairs. In particular, it
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// will fail for recursive subroutine calls. However, with 128 bytes of RAM
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// to share between stack and variables, I doubt any 2600 games will ever
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// use recursion...
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int Debugger::trace()
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{
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// 32 is the 6502 JSR instruction:
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if(mySystem.peek(myCpuDebug->pc()) == 32)
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{
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saveOldState();
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mySystem.clearDirtyPages();
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int cyc = mySystem.cycles();
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int targetPC = myCpuDebug->pc() + 3; // return address
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unlockBankswitchState();
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myOSystem.console().tia().updateScanlineByTrace(targetPC);
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lockBankswitchState();
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return mySystem.cycles() - cyc;
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}
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else
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return step();
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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void Debugger::toggleBreakPoint(int bp)
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{
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mySystem.m6502().setBreakPoints(myBreakPoints);
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if(bp < 0) bp = myCpuDebug->pc();
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myBreakPoints->toggle(bp);
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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void Debugger::setBreakPoint(int bp, bool set)
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{
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mySystem.m6502().setBreakPoints(myBreakPoints);
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if(bp < 0) bp = myCpuDebug->pc();
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if(set)
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myBreakPoints->set(bp);
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else
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myBreakPoints->clear(bp);
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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bool Debugger::breakPoint(int bp)
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{
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if(bp < 0) bp = myCpuDebug->pc();
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return myBreakPoints->isSet(bp) != 0;
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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void Debugger::toggleReadTrap(int t)
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{
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mySystem.m6502().setTraps(myReadTraps, myWriteTraps);
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myReadTraps->toggle(t);
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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void Debugger::toggleWriteTrap(int t)
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{
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mySystem.m6502().setTraps(myReadTraps, myWriteTraps);
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myWriteTraps->toggle(t);
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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void Debugger::toggleTrap(int t)
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{
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toggleReadTrap(t);
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toggleWriteTrap(t);
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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bool Debugger::readTrap(int t)
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{
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return myReadTraps->isSet(t) != 0;
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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bool Debugger::writeTrap(int t)
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{
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return myWriteTraps->isSet(t) != 0;
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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void Debugger::nextScanline(int lines)
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{
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saveOldState();
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mySystem.clearDirtyPages();
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unlockBankswitchState();
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while(lines)
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{
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myOSystem.console().tia().updateScanline();
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--lines;
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}
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lockBankswitchState();
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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void Debugger::nextFrame(int frames)
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{
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saveOldState();
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mySystem.clearDirtyPages();
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unlockBankswitchState();
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while(frames)
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{
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myOSystem.console().tia().update();
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--frames;
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}
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lockBankswitchState();
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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bool Debugger::rewindState()
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{
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mySystem.clearDirtyPages();
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unlockBankswitchState();
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bool result = myRewindManager->rewindState();
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lockBankswitchState();
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return result;
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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void Debugger::clearAllBreakPoints()
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{
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delete myBreakPoints;
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myBreakPoints = new PackedBitArray(0x10000);
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mySystem.m6502().setBreakPoints(nullptr);
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
|
void Debugger::clearAllTraps()
|
|
{
|
|
delete myReadTraps;
|
|
delete myWriteTraps;
|
|
myReadTraps = new PackedBitArray(0x10000);
|
|
myWriteTraps = new PackedBitArray(0x10000);
|
|
mySystem.m6502().setTraps(nullptr, nullptr);
|
|
}
|
|
|
|
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
|
string Debugger::showWatches()
|
|
{
|
|
return myParser->showWatches();
|
|
}
|
|
|
|
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
|
bool Debugger::patchROM(int addr, int value)
|
|
{
|
|
return myConsole.cartridge().patch(addr, value);
|
|
}
|
|
|
|
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
|
void Debugger::saveOldState(bool addrewind)
|
|
{
|
|
myCartDebug->saveOldState();
|
|
myCpuDebug->saveOldState();
|
|
myRiotDebug->saveOldState();
|
|
myTiaDebug->saveOldState();
|
|
|
|
// Add another rewind level to the Undo list
|
|
if(addrewind) myRewindManager->addState();
|
|
}
|
|
|
|
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
|
void Debugger::setStartState()
|
|
{
|
|
// Lock the bus each time the debugger is entered, so we don't disturb anything
|
|
lockBankswitchState();
|
|
|
|
// Start a new rewind list
|
|
myRewindManager->clear();
|
|
|
|
// Save initial state, but don't add it to the rewind list
|
|
saveOldState(false);
|
|
|
|
// Set the 're-disassemble' flag, but don't do it until the next scheduled time
|
|
myDialog->rom().invalidate(false);
|
|
}
|
|
|
|
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
|
void Debugger::setQuitState()
|
|
{
|
|
// Bus must be unlocked for normal operation when leaving debugger mode
|
|
unlockBankswitchState();
|
|
|
|
// execute one instruction on quit. If we're
|
|
// sitting at a breakpoint/trap, this will get us past it.
|
|
// Somehow this feels like a hack to me, but I don't know why
|
|
// if(myBreakPoints->isSet(myCpuDebug->pc()))
|
|
mySystem.m6502().execute(1);
|
|
}
|
|
|
|
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
|
bool Debugger::addFunction(const string& name, const string& definition,
|
|
Expression* exp, bool builtin)
|
|
{
|
|
myFunctions.insert(make_pair(name, exp));
|
|
if(!builtin)
|
|
myFunctionDefs.insert(make_pair(name, definition));
|
|
|
|
return true;
|
|
}
|
|
|
|
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
|
bool Debugger::delFunction(const string& name)
|
|
{
|
|
const auto& iter = myFunctions.find(name);
|
|
if(iter == myFunctions.end())
|
|
return false;
|
|
|
|
myFunctions.erase(name);
|
|
delete iter->second;
|
|
|
|
const auto& def_iter = myFunctionDefs.find(name);
|
|
if(def_iter == myFunctionDefs.end())
|
|
return false;
|
|
|
|
myFunctionDefs.erase(name);
|
|
return true;
|
|
}
|
|
|
|
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
|
const Expression* Debugger::getFunction(const string& name) const
|
|
{
|
|
const auto& iter = myFunctions.find(name);
|
|
return iter != myFunctions.end() ? iter->second : nullptr;
|
|
}
|
|
|
|
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
|
const string& Debugger::getFunctionDef(const string& name) const
|
|
{
|
|
const auto& iter = myFunctionDefs.find(name);
|
|
return iter != myFunctionDefs.end() ? iter->second : EmptyString;
|
|
}
|
|
|
|
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
|
const FunctionDefMap Debugger::getFunctionDefMap() const
|
|
{
|
|
return myFunctionDefs;
|
|
}
|
|
|
|
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
|
string Debugger::builtinHelp() const
|
|
{
|
|
ostringstream buf;
|
|
uInt16 len, c_maxlen = 0, i_maxlen = 0;
|
|
|
|
// Get column widths for aligned output (functions)
|
|
for(int i = 0; builtin_functions[i][0] != 0; ++i)
|
|
{
|
|
len = strlen(builtin_functions[i][0]);
|
|
if(len > c_maxlen) c_maxlen = len;
|
|
len = strlen(builtin_functions[i][1]);
|
|
if(len > i_maxlen) i_maxlen = len;
|
|
}
|
|
|
|
buf << setfill(' ') << endl << "Built-in functions:" << endl;
|
|
for(int i = 0; builtin_functions[i][0] != 0; ++i)
|
|
{
|
|
buf << setw(c_maxlen) << left << builtin_functions[i][0]
|
|
<< setw(2) << right << "{"
|
|
<< setw(i_maxlen) << left << builtin_functions[i][1]
|
|
<< setw(4) << "}"
|
|
<< builtin_functions[i][2]
|
|
<< endl;
|
|
}
|
|
|
|
// Get column widths for aligned output (pseudo-registers)
|
|
c_maxlen = 0;
|
|
for(int i = 0; pseudo_registers[i][0] != 0; ++i)
|
|
{
|
|
len = strlen(pseudo_registers[i][0]);
|
|
if(len > c_maxlen) c_maxlen = len;
|
|
}
|
|
|
|
buf << endl << "Pseudo-registers:" << endl;
|
|
for(int i = 0; pseudo_registers[i][0] != 0; ++i)
|
|
{
|
|
buf << setw(c_maxlen) << left << pseudo_registers[i][0]
|
|
<< setw(2) << " "
|
|
<< setw(i_maxlen) << left << pseudo_registers[i][1]
|
|
<< endl;
|
|
}
|
|
|
|
return buf.str();
|
|
}
|
|
|
|
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
|
void Debugger::getCompletions(const char* in, StringList& list) const
|
|
{
|
|
for(const auto& iter: myFunctions)
|
|
{
|
|
const char* l = iter.first.c_str();
|
|
if(BSPF_equalsIgnoreCase(l, in))
|
|
list.push_back(l);
|
|
}
|
|
|
|
for(int i = 0; pseudo_registers[i][0] != 0; ++i)
|
|
if(BSPF_equalsIgnoreCase(pseudo_registers[i][0], in))
|
|
list.push_back(pseudo_registers[i][0]);
|
|
}
|
|
|
|
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
|
void Debugger::lockBankswitchState()
|
|
{
|
|
mySystem.lockDataBus();
|
|
myConsole.cartridge().lockBank();
|
|
}
|
|
|
|
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
|
void Debugger::unlockBankswitchState()
|
|
{
|
|
mySystem.unlockDataBus();
|
|
myConsole.cartridge().unlockBank();
|
|
}
|
|
|
|
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
|
Debugger::RewindManager::RewindManager(OSystem& system, ButtonWidget& button)
|
|
: myOSystem(system),
|
|
myRewindButton(button),
|
|
mySize(0),
|
|
myTop(0)
|
|
{
|
|
for(int i = 0; i < MAX_SIZE; ++i)
|
|
myStateList[i] = nullptr;
|
|
}
|
|
|
|
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
|
Debugger::RewindManager::~RewindManager()
|
|
{
|
|
for(int i = 0; i < MAX_SIZE; ++i)
|
|
delete myStateList[i];
|
|
}
|
|
|
|
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
|
bool Debugger::RewindManager::addState()
|
|
{
|
|
// Create a new Serializer object if we need one
|
|
if(myStateList[myTop] == nullptr)
|
|
myStateList[myTop] = new Serializer();
|
|
Serializer& s = *(myStateList[myTop]);
|
|
|
|
if(s.valid())
|
|
{
|
|
s.reset();
|
|
if(myOSystem.state().saveState(s) && myOSystem.console().tia().saveDisplay(s))
|
|
{
|
|
// Are we still within the allowable size, or are we overwriting an item?
|
|
mySize++; if(mySize > MAX_SIZE) mySize = MAX_SIZE;
|
|
|
|
myTop = (myTop + 1) % MAX_SIZE;
|
|
myRewindButton.setEnabled(true);
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
|
bool Debugger::RewindManager::rewindState()
|
|
{
|
|
if(mySize > 0)
|
|
{
|
|
mySize--;
|
|
myTop = myTop == 0 ? MAX_SIZE - 1 : myTop - 1;
|
|
Serializer& s = *(myStateList[myTop]);
|
|
|
|
s.reset();
|
|
myOSystem.state().loadState(s);
|
|
myOSystem.console().tia().loadDisplay(s);
|
|
|
|
if(mySize == 0)
|
|
myRewindButton.setEnabled(false);
|
|
|
|
return true;
|
|
}
|
|
else
|
|
return false;
|
|
}
|
|
|
|
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
|
bool Debugger::RewindManager::empty()
|
|
{
|
|
return mySize == 0;
|
|
}
|
|
|
|
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
|
void Debugger::RewindManager::clear()
|
|
{
|
|
for(int i = 0; i < MAX_SIZE; ++i)
|
|
if(myStateList[i] != nullptr)
|
|
myStateList[i]->reset();
|
|
|
|
myTop = mySize = 0;
|
|
|
|
// We use Widget::clearFlags here instead of Widget::setEnabled(),
|
|
// since the latter implies an immediate draw/update, but this method
|
|
// might be called before any UI exists
|
|
// TODO - fix this deficiency in the UI core; we shouldn't have to worry
|
|
// about such things at this level
|
|
myRewindButton.clearFlags(WIDGET_ENABLED);
|
|
}
|