private string WriteMemory(GDBPacket packet)
{
var parameters = packet.GetCommandParameters();
if (parameters.Length < 3)
{
return(GetErrorAnswer(Errno.ENOENT));
}
var arg1 = Convert.ToUInt32(parameters[0], 16);
var arg2 = Convert.ToUInt32(parameters[1], 16);
if (arg1 > ushort.MaxValue || arg2 > ushort.MaxValue)
{
return(GetErrorAnswer(Errno.ENOENT));
}
var addr = (ushort)arg1;
var length = (ushort)arg2;
for (var i = 0; i < length; i++)
{
var hex = parameters[2].Substring(i * 2, 2);
var value = Convert.ToByte(hex, 16);
_emulator.CPU.WRMEM((ushort)(addr + i), value);
}
return(StandartAnswers.OK);
}
private string ReadMemory(GDBPacket packet)
{
var parameters = packet.GetCommandParameters();
if (parameters.Length < 2)
{
return(GetErrorAnswer(Errno.EPERM));
}
var arg1 = Convert.ToUInt32(parameters[0], 16);
var arg2 = Convert.ToUInt32(parameters[1], 16);
if (arg1 > ushort.MaxValue || arg2 > ushort.MaxValue)
{
return(GetErrorAnswer(Errno.EPERM));
}
var addr = (ushort)arg1;
var length = (ushort)arg2;
var result = string.Empty;
for (var i = 0; i < length; i++)
{
var hex = _emulator.CPU.RDMEM((ushort)(addr + i))
.ToLowEndianHexString();
result += hex;
}
return(result);
}
private string GeneralQueryResponse(GDBPacket packet)
{
string command = packet.GetCommandParameters()[0];
if (command.StartsWith("Supported"))
{
return("PacketSize=4000");
}
if (command.StartsWith("C"))
{
return(StandartAnswers.Empty);
}
if (command.StartsWith("Attached"))
{
return("1");
}
if (command.StartsWith("TStatus"))
{
return(StandartAnswers.Empty);
}
if (command.StartsWith("Offset"))
{
return(StandartAnswers.Error);
}
return(StandartAnswers.OK);
}
private string WriteRegisters(GDBPacket packet)
{
var regsData = packet.GetCommandParameters()[0];
for (int i = 0, pos = 0; i < RegistersCount; i++)
{
int currentRegisterLength = GetRegisterSize(i) == RegisterSize.Word ? 4 : 2;
SetRegister(i, regsData.Substring(pos, currentRegisterLength));
pos += currentRegisterLength;
}
return(StandartAnswers.OK);
}
private string ExecutionRequest(GDBPacket packet)
{
string command = packet.GetCommandParameters()[0];
if (command.StartsWith("Cont?"))
{
return("");
}
if (command.StartsWith("Cont"))
{
}
return(StandartAnswers.Empty);
}
private string SetRegister(GDBPacket packet)
{
var parameters = packet.GetCommandParameters()[0].Split(new char[] { '=' });
if (SetRegister(Convert.ToInt32(parameters[0], 16), parameters[1]))
{
return(StandartAnswers.OK);
}
else
{
return(StandartAnswers.Error);
}
}
private string RemoveBreakpoint(GDBPacket packet)
{
string[] parameters = packet.GetCommandParameters();
Breakpoint.BreakpointType type = Breakpoint.GetBreakpointType(int.Parse(parameters[0]));
ushort addr = Convert.ToUInt16(parameters[1], 16);
if (type == Breakpoint.BreakpointType.Execution)
{
_emulator.RemoveBreakpoint(new ZXMAK2.Engine.Entities.Breakpoint(addr));
}
else
{
_jtagDevice.RemoveBreakpoint(addr);
}
return(StandartAnswers.OK);
}
private string GetRegister(GDBPacket packet)
{
return(GetRegisterAsHex(Convert.ToInt32(packet.GetCommandParameters()[0], 16)));
}