756 lines
24 KiB
C#
756 lines
24 KiB
C#
using ARMeilleure.State;
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using Ryujinx.Common;
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using Ryujinx.Common.Logging;
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using Ryujinx.Memory;
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using Ryujinx.HLE.HOS.Kernel;
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using Ryujinx.HLE.HOS.Kernel.Threading;
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using System;
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using System.Collections.Concurrent;
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using System.Linq;
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using System.Net;
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using System.Net.Sockets;
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using System.Text;
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using System.Threading;
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using IExecutionContext = Ryujinx.Cpu.IExecutionContext;
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namespace Ryujinx.HLE.Debugger
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{
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public class Debugger : IDisposable
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{
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internal Switch Device { get; private set; }
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public ushort GdbStubPort { get; private set; }
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private TcpListener ListenerSocket;
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private Socket ClientSocket = null;
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private NetworkStream ReadStream = null;
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private NetworkStream WriteStream = null;
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private BlockingCollection<IMessage> Messages = new BlockingCollection<IMessage>(1);
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private Thread SocketThread;
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private Thread HandlerThread;
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private bool _shuttingDown = false;
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private ulong? cThread;
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private ulong? gThread;
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public Debugger(Switch device, ushort port)
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{
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Device = device;
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GdbStubPort = port;
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ARMeilleure.Optimizations.EnableDebugging = true;
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SocketThread = new Thread(SocketReaderThreadMain);
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HandlerThread = new Thread(HandlerThreadMain);
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SocketThread.Start();
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HandlerThread.Start();
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}
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private void HaltApplication() => Device.System.DebugGetApplicationProcess().DebugStopAllThreads();
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private ulong[] GetThreadIds() => Device.System.DebugGetApplicationProcess().DebugGetThreadUids();
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private KThread GetThread(ulong threadUid) => Device.System.DebugGetApplicationProcess().DebugGetThread(threadUid);
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private KThread[] GetThreads() => GetThreadIds().Select(x => GetThread(x)).ToArray();
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private IVirtualMemoryManager GetMemory() => Device.System.DebugGetApplicationProcess().CpuMemory;
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private void InvalidateCacheRegion(ulong address, ulong size) =>
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Device.System.DebugGetApplicationProcess().InvalidateCacheRegion(address, size);
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private KernelContext KernelContext => Device.System.KernelContext;
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const int GdbRegisterCount = 68;
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private int GdbRegisterHexSize(int gdbRegId)
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{
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switch (gdbRegId)
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{
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case >= 0 and <= 31:
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return 16;
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case 32:
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return 16;
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case 33:
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return 8;
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case >= 34 and <= 65:
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return 32;
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case 66:
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return 8;
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case 67:
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return 8;
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default:
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throw new ArgumentException();
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}
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}
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private string GdbReadRegister(IExecutionContext state, int gdbRegId)
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{
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switch (gdbRegId)
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{
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case >= 0 and <= 31:
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return ToHex(BitConverter.GetBytes(state.GetX(gdbRegId)));
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case 32:
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return ToHex(BitConverter.GetBytes(state.DebugPc));
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case 33:
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return ToHex(BitConverter.GetBytes(state.Pstate));
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case >= 34 and <= 65:
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return ToHex(state.GetV(gdbRegId - 34).ToArray());
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case 66:
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return ToHex(BitConverter.GetBytes((uint)state.Fpsr));
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case 67:
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return ToHex(BitConverter.GetBytes((uint)state.Fpcr));
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default:
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return null;
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}
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}
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private bool GdbWriteRegister(IExecutionContext state, int gdbRegId, StringStream ss)
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{
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switch (gdbRegId)
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{
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case >= 0 and <= 31:
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{
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ulong value = ss.ReadLengthAsHex(16);
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state.SetX(gdbRegId, value);
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return true;
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}
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case 32:
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{
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ulong value = ss.ReadLengthAsHex(8);
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state.DebugPc = value;
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return true;
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}
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case 33:
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{
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ulong value = ss.ReadLengthAsHex(8);
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state.Pstate = (uint)value;
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return true;
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}
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case >= 34 and <= 65:
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{
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ulong value0 = ss.ReadLengthAsHex(16);
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ulong value1 = ss.ReadLengthAsHex(16);
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state.SetV(gdbRegId - 34, new V128(value0, value1));
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return true;
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}
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case 66:
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{
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ulong value = ss.ReadLengthAsHex(8);
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state.Fpsr = (uint)value;
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return true;
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}
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case 67:
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{
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ulong value = ss.ReadLengthAsHex(8);
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state.Fpcr = (uint)value;
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return true;
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}
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default:
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return false;
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}
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}
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private void HandlerThreadMain()
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{
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while (true)
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{
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switch (Messages.Take())
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{
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case AbortMessage _:
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return;
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case BreakInMessage _:
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Logger.Notice.Print(LogClass.GdbStub, "Break-in requested");
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CommandQuery();
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break;
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case SendNackMessage _:
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WriteStream.WriteByte((byte)'-');
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break;
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case CommandMessage {Command: var cmd}:
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Logger.Debug?.Print(LogClass.GdbStub, $"Received Command: {cmd}");
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WriteStream.WriteByte((byte)'+');
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ProcessCommand(cmd);
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break;
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case ThreadBreakMessage msg:
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HaltApplication();
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Reply($"T05thread:{msg.Context.ThreadUid:x};");
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break;
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}
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}
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}
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private void ProcessCommand(string cmd)
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{
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StringStream ss = new StringStream(cmd);
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switch (ss.ReadChar())
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{
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case '!':
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if (!ss.IsEmpty())
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{
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goto unknownCommand;
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}
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// Enable extended mode
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ReplyOK();
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break;
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case '?':
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if (!ss.IsEmpty())
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{
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goto unknownCommand;
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}
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CommandQuery();
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break;
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case 'c':
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CommandContinue(ss.IsEmpty() ? null : ss.ReadRemainingAsHex());
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break;
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case 'D':
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if (!ss.IsEmpty())
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{
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goto unknownCommand;
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}
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CommandDetach();
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break;
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case 'g':
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if (!ss.IsEmpty())
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{
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goto unknownCommand;
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}
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CommandReadRegisters();
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break;
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case 'G':
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CommandWriteRegisters(ss);
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break;
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case 'H':
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{
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char op = ss.ReadChar();
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ulong? threadId = ss.ReadRemainingAsThreadUid();
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CommandSetThread(op, threadId);
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break;
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}
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case 'k':
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Logger.Notice.Print(LogClass.GdbStub, "Kill request received");
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Reply("");
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break;
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case 'm':
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{
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ulong addr = ss.ReadUntilAsHex(',');
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ulong len = ss.ReadRemainingAsHex();
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CommandReadMemory(addr, len);
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break;
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}
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case 'M':
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{
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ulong addr = ss.ReadUntilAsHex(',');
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ulong len = ss.ReadUntilAsHex(':');
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CommandWriteMemory(addr, len, ss);
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break;
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}
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case 'p':
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{
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ulong gdbRegId = ss.ReadRemainingAsHex();
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CommandReadRegister((int)gdbRegId);
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break;
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}
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case 'P':
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{
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ulong gdbRegId = ss.ReadUntilAsHex('=');
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CommandWriteRegister((int)gdbRegId, ss);
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break;
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}
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case 'q':
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if (ss.ConsumeRemaining("GDBServerVersion"))
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{
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Reply($"name:Ryujinx;version:{ReleaseInformation.GetVersion()};");
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break;
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}
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if (ss.ConsumeRemaining("HostInfo"))
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{
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Reply(
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$"triple:{ToHex("aarch64-unknown-linux-android")};endian:little;ptrsize:8;hostname:{ToHex("Ryujinx")};");
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break;
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}
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if (ss.ConsumeRemaining("ProcessInfo"))
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{
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Reply(
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$"pid:1;cputype:100000c;cpusubtype:0;triple:{ToHex("aarch64-unknown-linux-android")};ostype:unknown;vendor:none;endian:little;ptrsize:8;");
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break;
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}
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if (ss.ConsumePrefix("Supported:") || ss.ConsumeRemaining("Supported"))
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{
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Reply("PacketSize=10000;qXfer:features:read+");
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break;
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}
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if (ss.ConsumeRemaining("fThreadInfo"))
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{
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Reply($"m{string.Join(",", GetThreadIds().Select(x => $"{x:x}"))}");
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break;
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}
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if (ss.ConsumeRemaining("sThreadInfo"))
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{
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Reply("l");
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break;
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}
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if (ss.ConsumePrefix("ThreadExtraInfo,"))
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{
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ulong? threadId = ss.ReadRemainingAsThreadUid();
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if (threadId == null)
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{
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ReplyError();
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break;
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}
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KThread thread = GetThread(threadId.Value);
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if (thread.GetDebugState() == DebugState.Stopped)
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{
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Reply(ToHex("Stopped"));
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}
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else
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{
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Reply(ToHex("Not stopped"));
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}
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break;
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}
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if (ss.ConsumePrefix("Xfer:features:read:"))
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{
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string feature = ss.ReadUntil(':');
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ulong addr = ss.ReadUntilAsHex(',');
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ulong len = ss.ReadRemainingAsHex();
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string data;
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if (RegisterInformation.Features.TryGetValue(feature, out data))
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{
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if (addr >= (ulong)data.Length)
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{
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Reply("l");
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break;
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}
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if (len >= (ulong)data.Length - addr)
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{
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Reply("l" + ToBinaryFormat(data.Substring((int)addr)));
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break;
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}
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else
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{
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Reply("m" + ToBinaryFormat(data.Substring((int)addr, (int)len)));
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break;
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}
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}
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else
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{
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Reply("E00"); // Invalid annex
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break;
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}
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}
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goto unknownCommand;
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case 'Q':
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goto unknownCommand;
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case 's':
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CommandStep(ss.IsEmpty() ? null : ss.ReadRemainingAsHex());
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break;
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case 'T':
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{
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ulong? threadId = ss.ReadRemainingAsThreadUid();
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CommandIsAlive(threadId);
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break;
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}
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default:
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unknownCommand:
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Logger.Notice.Print(LogClass.GdbStub, $"Unknown command: {cmd}");
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Reply("");
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break;
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}
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}
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void CommandQuery()
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{
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// GDB is performing initial contact. Stop everything.
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HaltApplication();
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gThread = cThread = GetThreadIds().First();
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Reply($"T05thread:{cThread:x};");
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}
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void CommandContinue(ulong? newPc)
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{
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if (newPc.HasValue)
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{
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if (cThread == null)
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{
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ReplyError();
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return;
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}
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GetThread(cThread.Value).Context.DebugPc = newPc.Value;
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}
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foreach (var thread in GetThreads())
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{
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thread.DebugContinue();
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}
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}
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void CommandDetach()
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{
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// TODO: Remove all breakpoints
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CommandContinue(null);
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}
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void CommandReadRegisters()
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{
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if (gThread == null)
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{
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ReplyError();
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return;
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}
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var ctx = GetThread(gThread.Value).Context;
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string registers = "";
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for (int i = 0; i < GdbRegisterCount; i++)
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{
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registers += GdbReadRegister(ctx, i);
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}
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Reply(registers);
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}
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void CommandWriteRegisters(StringStream ss)
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{
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if (gThread == null)
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{
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ReplyError();
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return;
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}
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var ctx = GetThread(gThread.Value).Context;
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for (int i = 0; i < GdbRegisterCount; i++)
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{
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if (!GdbWriteRegister(ctx, i, ss))
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{
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ReplyError();
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return;
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}
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}
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if (ss.IsEmpty())
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{
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ReplyOK();
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}
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else
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{
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ReplyError();
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}
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}
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void CommandSetThread(char op, ulong? threadId)
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{
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if (threadId == 0)
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{
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threadId = GetThreads().First().ThreadUid;
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}
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switch (op)
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{
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case 'c':
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cThread = threadId;
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ReplyOK();
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return;
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case 'g':
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gThread = threadId;
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ReplyOK();
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return;
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default:
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ReplyError();
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return;
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}
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}
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void CommandReadMemory(ulong addr, ulong len)
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{
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try
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{
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var data = new byte[len];
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GetMemory().Read(addr, data);
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Reply(ToHex(data));
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}
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catch (InvalidMemoryRegionException)
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{
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ReplyError();
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}
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}
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void CommandWriteMemory(ulong addr, ulong len, StringStream ss)
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{
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try
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{
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var data = new byte[len];
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for (ulong i = 0; i < len; i++)
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{
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data[i] = (byte)ss.ReadLengthAsHex(2);
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}
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GetMemory().Write(addr, data);
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InvalidateCacheRegion(addr, len);
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ReplyOK();
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}
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catch (InvalidMemoryRegionException)
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{
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ReplyError();
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}
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}
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void CommandReadRegister(int gdbRegId)
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{
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if (gThread == null)
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{
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ReplyError();
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return;
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}
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var ctx = GetThread(gThread.Value).Context;
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string result = GdbReadRegister(ctx, gdbRegId);
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if (result != null)
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{
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Reply(result);
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}
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else
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{
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ReplyError();
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}
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}
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void CommandWriteRegister(int gdbRegId, StringStream ss)
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{
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if (gThread == null)
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{
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ReplyError();
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return;
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}
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var ctx = GetThread(gThread.Value).Context;
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if (GdbWriteRegister(ctx, gdbRegId, ss) && ss.IsEmpty())
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{
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ReplyOK();
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}
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else
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{
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ReplyError();
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}
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}
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private void CommandStep(ulong? newPc)
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{
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if (cThread == null)
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{
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ReplyError();
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return;
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}
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var thread = GetThread(cThread.Value);
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if (newPc.HasValue)
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{
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thread.Context.DebugPc = newPc.Value;
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}
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thread.DebugStep();
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Reply($"T05thread:{thread.ThreadUid:x};");
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}
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private void CommandIsAlive(ulong? threadId)
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{
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if (GetThreads().Any(x => x.ThreadUid == threadId))
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{
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ReplyOK();
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}
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else
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{
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Reply("E00");
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}
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}
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private void Reply(string cmd)
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{
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Logger.Debug?.Print(LogClass.GdbStub, $"Reply: {cmd}");
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WriteStream.Write(Encoding.ASCII.GetBytes($"${cmd}#{CalculateChecksum(cmd):x2}"));
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}
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private void ReplyOK()
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{
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Reply("OK");
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}
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private void ReplyError()
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{
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Reply("E01");
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}
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private void SocketReaderThreadMain()
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{
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var endpoint = new IPEndPoint(IPAddress.Any, GdbStubPort);
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ListenerSocket = new TcpListener(endpoint);
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ListenerSocket.Start();
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Logger.Notice.Print(LogClass.GdbStub, $"Currently waiting on {endpoint} for GDB client");
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while (true) {
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ClientSocket = ListenerSocket.AcceptSocket();
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ClientSocket.NoDelay = true;
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ReadStream = new NetworkStream(ClientSocket, System.IO.FileAccess.Read);
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WriteStream = new NetworkStream(ClientSocket, System.IO.FileAccess.Write);
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Logger.Notice.Print(LogClass.GdbStub, "GDB client connected");
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while (true)
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{
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switch (ReadStream.ReadByte())
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{
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case -1:
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goto eof;
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case '+':
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continue;
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case '-':
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Logger.Notice.Print(LogClass.GdbStub, "NACK received!");
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continue;
|
|
case '\x03':
|
|
Messages.Add(new BreakInMessage());
|
|
break;
|
|
case '$':
|
|
string cmd = "";
|
|
while (true)
|
|
{
|
|
int x = ReadStream.ReadByte();
|
|
if (x == -1)
|
|
goto eof;
|
|
if (x == '#')
|
|
break;
|
|
cmd += (char)x;
|
|
}
|
|
|
|
string checksum = $"{(char)ReadStream.ReadByte()}{(char)ReadStream.ReadByte()}";
|
|
if (checksum == $"{CalculateChecksum(cmd):x2}")
|
|
{
|
|
Messages.Add(new CommandMessage(cmd));
|
|
}
|
|
else
|
|
{
|
|
Messages.Add(new SendNackMessage());
|
|
}
|
|
|
|
break;
|
|
}
|
|
}
|
|
|
|
eof:
|
|
Logger.Notice.Print(LogClass.GdbStub, "GDB client lost connection");
|
|
}
|
|
}
|
|
|
|
private byte CalculateChecksum(string cmd)
|
|
{
|
|
byte checksum = 0;
|
|
foreach (char x in cmd)
|
|
{
|
|
unchecked
|
|
{
|
|
checksum += (byte)x;
|
|
}
|
|
}
|
|
|
|
return checksum;
|
|
}
|
|
|
|
private string ToHex(byte[] bytes)
|
|
{
|
|
return string.Join("", bytes.Select(x => $"{x:x2}"));
|
|
}
|
|
|
|
private string ToHex(string str)
|
|
{
|
|
return ToHex(Encoding.ASCII.GetBytes(str));
|
|
}
|
|
|
|
private string ToBinaryFormat(byte[] bytes)
|
|
{
|
|
return string.Join("", bytes.Select(x =>
|
|
x switch
|
|
{
|
|
(byte)'#' => "}\x03",
|
|
(byte)'$' => "}\x04",
|
|
(byte)'*' => "}\x0a",
|
|
(byte)'}' => "}\x5d",
|
|
_ => Convert.ToChar(x).ToString(),
|
|
}
|
|
));
|
|
}
|
|
|
|
private string ToBinaryFormat(string str)
|
|
{
|
|
return ToBinaryFormat(Encoding.ASCII.GetBytes(str));
|
|
}
|
|
|
|
public void Dispose()
|
|
{
|
|
Dispose(true);
|
|
}
|
|
|
|
protected virtual void Dispose(bool disposing)
|
|
{
|
|
if (disposing)
|
|
{
|
|
_shuttingDown = true;
|
|
|
|
if (HandlerThread.IsAlive)
|
|
{
|
|
Messages.Add(new AbortMessage());
|
|
}
|
|
|
|
ListenerSocket.Stop();
|
|
ClientSocket?.Shutdown(SocketShutdown.Both);
|
|
ClientSocket?.Close();
|
|
ReadStream?.Close();
|
|
WriteStream?.Close();
|
|
SocketThread.Join();
|
|
HandlerThread.Join();
|
|
}
|
|
}
|
|
|
|
public void ThreadBreak(IExecutionContext ctx, ulong address, int imm)
|
|
{
|
|
Logger.Notice.Print(LogClass.GdbStub, $"Break hit on thread {ctx.ThreadUid} at pc {address:x016}");
|
|
|
|
Messages.Add(new ThreadBreakMessage(ctx, address, imm));
|
|
|
|
KThread currentThread = GetThread(ctx.ThreadUid);
|
|
|
|
if (currentThread.Context.Running &&
|
|
currentThread.Owner != null &&
|
|
currentThread.GetUserDisableCount() != 0 &&
|
|
currentThread.Owner.PinnedThreads[currentThread.CurrentCore] == null)
|
|
{
|
|
KernelContext.CriticalSection.Enter();
|
|
|
|
currentThread.Owner.PinThread(currentThread);
|
|
|
|
currentThread.SetUserInterruptFlag();
|
|
|
|
KernelContext.CriticalSection.Leave();
|
|
}
|
|
|
|
if (currentThread.IsSchedulable)
|
|
{
|
|
KernelContext.Schedulers[currentThread.CurrentCore].Schedule();
|
|
}
|
|
|
|
currentThread.HandlePostSyscall();
|
|
}
|
|
}
|
|
}
|