Ejemplo n.º 1
0
 public Broadcast(Computer parent)
 {
     _parent = parent;
     _packetQueue = new List<Packet>();
     _packetPointer = 0;
     _sendTimer = 0;
 }
Ejemplo n.º 2
0
        public void Enqueue(Computer sender, byte[] data)
        {
            if (_packetPointer == 0 || _packetQueue.Count >= 32)
                return;

            var distance = Util.Distance(sender.Body.Position, _parent.Body.Position);
            _packetQueue.Add(new Packet(distance, sender.Body.Position, data));
        }
Ejemplo n.º 3
0
        public Radar(Computer parent)
        {
            _radarPointer = 0;
            RadarData = new RadarRay[Program.RadarRays];
            _timer = Program.Random.Next(UpdateEvery); // helps with stutter with lots of radars

            _parent = parent;
        }
Ejemplo n.º 4
0
        public static int LookupSymbol(Computer computer, string name)
        {
            var debugInfo = computer.Code.DebugInfo;
            if (debugInfo == null)
                throw new WatchException(string.Format("Undefined: {0}", name));

            var symbol = debugInfo.FindSymbol(name);
            if (!symbol.HasValue)
                throw new WatchException(string.Format("Undefined: {0}", name));

            return symbol.Value.Address;
        }
Ejemplo n.º 5
0
        private IEnumerable<Line> Disassemble(Computer target, int ip)
        {
            var machine = target.Vm;
            var debugInfo = target.Code.DebugInfo;
            var instruction = new Instruction(machine);
            var buffer = new byte[8];

            while (true)
            {
                var instrAddr = machine.IP;
                if (instrAddr >= machine.Memory.Length)
                    break;

                ShipDebug.Line? nextLine = null;

                if (debugInfo != null)
                {
                    var symbol = debugInfo.FindSymbol(instrAddr);
                    if (symbol.HasValue && symbol.Value.Address == instrAddr)
                        yield return new Line(instrAddr, string.Format("< {0} >", symbol.Value.Name), false, 1);

                    nextLine = debugInfo.FindLine(instrAddr, 1);
                }

                var decodeFailed = false;
                try
                {
                    instruction.Decode();
                }
                catch
                {
                    decodeFailed = true;
                }

                if (decodeFailed || !instruction.IsValid || (nextLine.HasValue && instrAddr + instruction.Length > nextLine.Value.Address))
                {
                    if (nextLine.HasValue)
                        machine.IP = nextLine.Value.Address;
                    else
                        machine.IP += 4;

                    var read = 0;
                    while (instrAddr <= machine.IP)
                    {
                        if (instrAddr >= machine.Memory.Length)
                            break;

                        buffer[read++] = machine.Memory[instrAddr++];

                        if (read == buffer.Length || instrAddr == machine.IP)
                        {
                            if (read > 0)
                            {
                                var bufferStr = string.Join(", ", buffer.Take(read).Select(v => string.Format("0x{0:X2}", v)));
                                yield return new Line(instrAddr - read, string.Format(" db {0}", bufferStr), false, 8);
                            }

                            read = 0;
                        }
                    }
                }
                else
                {
                    string sourceLine = null;

                    if (debugInfo != null)
                    {
                        var line = debugInfo.FindLine(instrAddr);
                        if (line.HasValue && line.Value.Address == instrAddr)
                            sourceLine = string.Format("{0}:{1}", line.Value.FileName, line.Value.LineNumber);
                    }

                    var fg = instrAddr == ip ? 4 : 0;
                    var bg = target.HasBreakpoint(instrAddr) ? 15 : 7;
                    yield return new Line(instrAddr, string.Format(" {0}", instruction), true, (byte)fg, (byte)bg, sourceLine);
                    machine.IP += instruction.Length;
                }
            }
        }
Ejemplo n.º 6
0
        public void Update(Computer target)
        {
            _scrollbar.Maximum = target.Vm.Memory.Length - (Height * 4);
            _scrollbar.Value = Util.Clamp(_scrollbar.Value, _scrollbar.Minimum, _scrollbar.Maximum);

            var debugInfo = target.Code.DebugInfo;
            var offset = (int)_scrollbar.Value;
            var originalIp = target.Vm.IP;
            target.Vm.IP = offset;

            if (debugInfo != null)
            {
                var prevLine = debugInfo.FindLine(offset, -1);
                if (prevLine.HasValue)
                    target.Vm.IP = prevLine.Value.Address; // TODO: limit how far back this can go
            }

            _lines.Clear();
            _lines.AddRange(Disassemble(target, originalIp).SkipWhile(l => l.Address < offset).Take((int)Height));

            target.Vm.IP = originalIp;
        }