DebugDevice.cc

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#include "DebugDevice.hh"
#include "Clock.hh"
#include "FileOperations.hh"
#include "serialize.hh"
#include <iostream>
#include <iomanip>

using std::string;

namespace openmsx {

DebugDevice::DebugDevice(const DeviceConfig& config)
        : MSXDevice(config)
        , fileNameSetting(
                getCommandController(), "debugoutput",
                "name of the file the debugdevice outputs to",
                config.getChildData("filename", "stdout"))
{
        openOutput(fileNameSetting.getString());
        reset(EmuTime::dummy());
}

void DebugDevice::reset(EmuTime::param /*time*/)
{
        mode = OFF;
        modeParameter = 0;
}

void DebugDevice::writeIO(word port, byte value, EmuTime::param time)
{
        const auto& newName = fileNameSetting.getString();
        if (newName != fileNameString) {
                openOutput(newName);
        }

        switch (port & 0x01) {
        case 0:
                switch ((value & 0x30) >> 4) {
                case 0:
                        mode = OFF;
                        break;
                case 1:
                        mode = SINGLEBYTE;
                        modeParameter = value & 0x0F;
                        break;
                case 2:
                        mode = MULTIBYTE;
                        modeParameter = value & 0x03;
                        break;
                case 3:
                        break;
                }
                if (!(value & 0x40)){
                        (*outputstrm) << '\n' << std::flush;
                }
                break;
        case 1:
                switch (mode) {
                case OFF:
                        break;
                case SINGLEBYTE:
                        outputSingleByte(value, time);
                        break;
                case MULTIBYTE:
                        outputMultiByte(value);
                        break;
                default:
                        break;
                }
                break;
        }
}

void DebugDevice::outputSingleByte(byte value, EmuTime::param time)
{
        if (modeParameter & 0x01) {
                displayByte(value, HEX);
        }
        if (modeParameter & 0x02) {
                displayByte(value, BIN);
        }
        if (modeParameter & 0x04) {
                displayByte(value, DEC);
        }
        if (modeParameter & 0x08) {
                (*outputstrm) << '\'';
                byte tmp = ((value >= ' ') && (value != 127)) ? value : '.';
                displayByte(tmp, ASC);
                (*outputstrm) << "' ";
        }
        Clock<3579545> zero(EmuTime::zero);
        (*outputstrm) << "emutime: " << std::dec << zero.getTicksTill(time);
        if ((modeParameter & 0x08) && ((value < ' ') || (value == 127))) {
                displayByte(value, ASC); // do special effects
        }
        (*outputstrm) << '\n' << std::flush;
}

void DebugDevice::outputMultiByte(byte value)
{
        DisplayType dispType;
        switch (modeParameter) {
        case 0:
                dispType = HEX;
                break;
        case 1:
                dispType = BIN;
                break;
        case 2:
                dispType = DEC;
                break;
        case 3:
        default:
                dispType = ASC;
                break;
        }
        displayByte(value, dispType);
}

void DebugDevice::displayByte(byte value, DisplayType type)
{
        switch (type) {
        case HEX:
                (*outputstrm) << std::hex << std::setw(2)
                              << std::setfill('0')
                              << int(value) << "h " << std::flush;
                break;
        case BIN: {
                for (byte mask = 0x80; mask; mask >>= 1) {
                        (*outputstrm) << ((value & mask) ? '1' : '0');
                }
                (*outputstrm) << "b " << std::flush;
                break;
        }
        case DEC:
                (*outputstrm) << std::dec << std::setw(3)
                              << std::setfill('0')
                              << int(value) << ' ' << std::flush;
                break;
        case ASC:
                (*outputstrm).put(value);
                (*outputstrm) << std::flush;
                break;
        }
}

void DebugDevice::openOutput(string_view name)
{
        fileNameString = name.str();
        debugOut.close();
        if (name == "stdout") {
                outputstrm = &std::cout;
        } else if (name == "stderr") {
                outputstrm = &std::cerr;
        } else {
                string realName = FileOperations::expandTilde(name);
                FileOperations::openofstream(debugOut, realName, std::ios::app);
                outputstrm = &debugOut;
        }
}

static std::initializer_list<enum_string<DebugDevice::DebugMode>> debugModeInfo = {
        { "OFF",        DebugDevice::OFF },
        { "SINGLEBYTE", DebugDevice::SINGLEBYTE },
        { "MULTIBYTE",  DebugDevice::MULTIBYTE },
        { "ASCII",      DebugDevice::ASCII }
};
SERIALIZE_ENUM(DebugDevice::DebugMode, debugModeInfo);

template<typename Archive>
void DebugDevice::serialize(Archive& ar, unsigned /*version*/)
{
        ar.template serializeBase<MSXDevice>(*this);
        ar.serialize("mode", mode);
        ar.serialize("modeParameter", modeParameter);
}
INSTANTIATE_SERIALIZE_METHODS(DebugDevice);
REGISTER_MSXDEVICE(DebugDevice, "DebugDevice");

} // namespace openmsx