gdbengine.cpp 135 KB
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/***************************************************************************
**
** This file is part of Qt Creator
**
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** Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
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**
** Contact:  Qt Software Information (qt-info@nokia.com)
**
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**
** Non-Open Source Usage
**
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** Licensees may use this file in accordance with the Qt Beta Version
** License Agreement, Agreement version 2.2 provided with the Software or,
** alternatively, in accordance with the terms contained in a written
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** agreement between you and Nokia.
**
** GNU General Public License Usage
**
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** Alternatively, this file may be used under the terms of the GNU General
** Public License versions 2.0 or 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the packaging
** of this file.  Please review the following information to ensure GNU
** General Public Licensing requirements will be met:
**
** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
** http://www.gnu.org/copyleft/gpl.html.
**
** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt GPL Exception
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** version 1.3, included in the file GPL_EXCEPTION.txt in this package.
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**
***************************************************************************/
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#include "gdbengine.h"

#include "debuggerconstants.h"
#include "debuggermanager.h"
#include "gdbmi.h"
#include "procinterrupt.h"

#include "disassemblerhandler.h"
#include "breakhandler.h"
#include "moduleshandler.h"
#include "registerhandler.h"
#include "stackhandler.h"
#include "watchhandler.h"

#include "startexternaldialog.h"
#include "attachexternaldialog.h"

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#include <utils/qtcassert.h>

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#include <QtCore/QDebug>
#include <QtCore/QDir>
#include <QtCore/QFileInfo>
#include <QtCore/QTime>
#include <QtCore/QTimer>

#include <QtGui/QAction>
#include <QtGui/QLabel>
#include <QtGui/QMainWindow>
#include <QtGui/QMessageBox>
#include <QtGui/QToolTip>

#if defined(Q_OS_LINUX) || defined(Q_OS_MAC)
#include <unistd.h>
#include <dlfcn.h>
#endif

using namespace Debugger;
using namespace Debugger::Internal;
using namespace Debugger::Constants;

Q_DECLARE_METATYPE(Debugger::Internal::GdbMi);

//#define DEBUG_PENDING  1
//#define DEBUG_SUBITEM  1

#if DEBUG_PENDING
#   define PENDING_DEBUG(s) qDebug() << s
#else
#   define PENDING_DEBUG(s) 
#endif

static const QString tooltipIName = "tooltip";

///////////////////////////////////////////////////////////////////////
//
// GdbCommandType
//
///////////////////////////////////////////////////////////////////////

enum GdbCommandType
{
    GdbInvalidCommand = 0,

    GdbShowVersion = 100,
    GdbFileExecAndSymbols,
    GdbQueryPwd,
    GdbQuerySources,
    GdbAsyncOutput2,
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    GdbStart,
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    GdbExecRun,
    GdbExecRunToFunction,
    GdbExecStep,
    GdbExecNext,
    GdbExecStepI,
    GdbExecNextI,
    GdbExecContinue,
    GdbExecFinish,
    GdbExecJumpToLine,
    GdbExecInterrupt,
    GdbInfoShared,
    GdbInfoProc,
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    GdbInfoThreads,
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    GdbQueryDataDumper1,
    GdbQueryDataDumper2,

    BreakCondition = 200,
    BreakEnablePending,
    BreakSetAnnotate,
    BreakDelete,
    BreakList,
    BreakIgnore,
    BreakInfo,
    BreakInsert,
    BreakInsert1,

    DisassemblerList = 300,

    ModulesList = 400,

    RegisterListNames = 500,
    RegisterListValues,

    StackSelectThread = 600,
    StackListThreads,
    StackListFrames,
    StackListLocals,
    StackListArguments,

    WatchVarAssign = 700,             // data changed by user
    WatchVarListChildren,
    WatchVarCreate,
    WatchEvaluateExpression,
    WatchToolTip,
    WatchDumpCustomSetup,
    WatchDumpCustomValue1,           // waiting for gdb ack
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    WatchDumpCustomValue2,           // waiting for actual data
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    WatchDumpCustomEditValue,
};

QString dotEscape(QString str)
{
    str.replace(' ', '.');
    str.replace('\\', '.');
    str.replace('/', '.');
    return str;
}

QString currentTime()
{
    return QTime::currentTime().toString("hh:mm:ss.zzz");
}

static int &currentToken()
{
    static int token = 0;
    return token;
}

static bool isSkippableFunction(const QString &funcName, const QString &fileName)
{
    if (fileName.endsWith("kernel/qobject.cpp"))
        return true;
    if (fileName.endsWith("kernel/moc_qobject.cpp"))
        return true;
    if (fileName.endsWith("kernel/qmetaobject.cpp"))
        return true;
    if (fileName.endsWith(".moc"))
        return true;

    if (funcName.endsWith("::qt_metacall"))
        return true;

    return false;
}

static bool isLeavableFunction(const QString &funcName, const QString &fileName)
{
    if (funcName.endsWith("QObjectPrivate::setCurrentSender"))
        return true;
    if (fileName.endsWith("kernel/qmetaobject.cpp")
            && funcName.endsWith("QMetaObject::methodOffset"))
        return true;
    if (fileName.endsWith("kernel/qobject.h"))
        return true;
    if (fileName.endsWith("kernel/qobject.cpp")
            && funcName.endsWith("QObjectConnectionListVector::at"))
        return true;
    if (fileName.endsWith("kernel/qobject.cpp")
            && funcName.endsWith("~QObject"))
        return true;
    if (fileName.endsWith("thread/qmutex.cpp"))
        return true;
    if (fileName.endsWith("thread/qthread.cpp"))
        return true;
    if (fileName.endsWith("thread/qthread_unix.cpp"))
        return true;
    if (fileName.endsWith("thread/qmutex.h"))
        return true;
    if (fileName.contains("thread/qbasicatomic"))
        return true;
    if (fileName.contains("thread/qorderedmutexlocker_p"))
        return true;
    if (fileName.contains("arch/qatomic"))
        return true;
    if (fileName.endsWith("tools/qvector.h"))
        return true;
    if (fileName.endsWith("tools/qlist.h"))
        return true;
    if (fileName.endsWith("tools/qhash.h"))
        return true;
    if (fileName.endsWith("tools/qmap.h"))
        return true;
    if (fileName.endsWith("tools/qstring.h"))
        return true;
    if (fileName.endsWith("global/qglobal.h"))
        return true;

    return false;
}

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static QString startSymbolName()
{
#ifdef Q_OS_WIN
    return "WinMainCRTStartup";
#else
    return "_start";
#endif
}

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///////////////////////////////////////////////////////////////////////
//
// GdbEngine
//
///////////////////////////////////////////////////////////////////////

GdbEngine::GdbEngine(DebuggerManager *parent)
{
    q = parent;
    qq = parent->engineInterface();
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    initializeVariables();
    initializeConnections();
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}

GdbEngine::~GdbEngine()
{
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    // prevent sending error messages afterwards
    m_gdbProc.disconnect(this);
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}

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void GdbEngine::initializeConnections()
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{
    // Gdb Process interaction
    connect(&m_gdbProc, SIGNAL(error(QProcess::ProcessError)), this,
        SLOT(gdbProcError(QProcess::ProcessError)));
    connect(&m_gdbProc, SIGNAL(readyReadStandardOutput()), this,
        SLOT(readGdbStandardOutput()));
    connect(&m_gdbProc, SIGNAL(readyReadStandardError()), this,
        SLOT(readGdbStandardError()));
    connect(&m_gdbProc, SIGNAL(finished(int, QProcess::ExitStatus)), q,
        SLOT(exitDebugger()));

    // Output
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    connect(&m_outputCollector, SIGNAL(byteDelivery(QByteArray)),
            SLOT(readDebugeeOutput(QByteArray)));
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    connect(this, SIGNAL(gdbResponseAvailable()),
        this, SLOT(handleResponse()), Qt::QueuedConnection);

    connect(this, SIGNAL(gdbOutputAvailable(QString,QString)),
        q, SLOT(showDebuggerOutput(QString,QString)),
        Qt::QueuedConnection);
    connect(this, SIGNAL(gdbInputAvailable(QString,QString)),
        q, SLOT(showDebuggerInput(QString,QString)),
        Qt::QueuedConnection);
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    connect(this, SIGNAL(applicationOutputAvailable(QString)),
        q, SLOT(showApplicationOutput(QString)),
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        Qt::QueuedConnection);
}

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void GdbEngine::initializeVariables()
{
    m_dataDumperState = DataDumperUninitialized;
    m_gdbVersion = 100;

    m_fullToShortName.clear();
    m_shortToFullName.clear();
    m_varToType.clear();

    m_modulesListOutdated = true;
    m_oldestAcceptableToken = -1;
    m_outputCodec = QTextCodec::codecForLocale();
    m_pendingRequests = 0;
    m_waitingForBreakpointSynchronizationToContinue = false;
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    m_waitingForFirstBreakpointToBeHit = false;
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}

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void GdbEngine::gdbProcError(QProcess::ProcessError error)
{
    QString msg;
    switch (error) {
        case QProcess::FailedToStart:
            msg = QString(tr("The Gdb process failed to start. Either the "
                "invoked program '%1' is missing, or you may have insufficient "
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                "permissions to invoke the program.")).arg(q->settings()->m_gdbCmd);
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            break;
        case QProcess::Crashed:
            msg = tr("The Gdb process crashed some time after starting "
                "successfully.");
            break;
        case QProcess::Timedout:
            msg = tr("The last waitFor...() function timed out. "
                "The state of QProcess is unchanged, and you can try calling "
                "waitFor...() again.");
            break;
        case QProcess::WriteError:
            msg = tr("An error occurred when attempting to write "
                "to the Gdb process. For example, the process may not be running, "
                "or it may have closed its input channel.");
            break;
        case QProcess::ReadError:
            msg = tr("An error occurred when attempting to read from "
                "the Gdb process. For example, the process may not be running.");
            break;
        default:
            msg = tr("An unknown error in the Gdb process occurred. "
                "This is the default return value of error().");
    }

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    q->showStatusMessage(msg);
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    QMessageBox::critical(q->mainWindow(), tr("Error"), msg);
    // act as if it was closed by the core
    q->exitDebugger();
}

static void skipSpaces(const char *&from, const char *to)
{
    while (from != to && QChar(*from).isSpace())
        ++from;
}

static inline bool isNameChar(char c)
{
    // could be 'stopped' or 'shlibs-added'
    return (c >= 'a' && c <= 'z') || c == '-';
}

#if 0
static void dump(const char *first, const char *middle, const QString & to)
{
    QByteArray ba(first, middle - first);
    Q_UNUSED(to);
    // note that qDebug cuts off output after a certain size... (bug?)
    qDebug("\n>>>>> %s\n%s\n====\n%s\n<<<<<\n",
        qPrintable(currentTime()),
        qPrintable(QString(ba).trimmed()),
        qPrintable(to.trimmed()));
    //qDebug() << "";
    //qDebug() << qPrintable(currentTime())
    //    << " Reading response:  " << QString(ba).trimmed() << "\n";
}
#endif

static void skipTerminator(const char *&from, const char *to)
{
    skipSpaces(from, to);
    // skip '(gdb)'
    if (from[0] == '(' && from[1] == 'g' && from[3] == 'b' && from[4] == ')')
        from += 5;
    skipSpaces(from, to);
}

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void GdbEngine::readDebugeeOutput(const QByteArray &data)
{
    emit applicationOutputAvailable(m_outputCodec->toUnicode(
            data.constData(), data.length(), &m_outputCodecState));
}

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void GdbEngine::debugMessage(const QString &msg)
{
    emit gdbOutputAvailable("debug:", msg);
}

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// called asyncronously as response to Gdb stdout output in
// gdbResponseAvailable()
void GdbEngine::handleResponse()
{
    static QTime lastTime;

    emit gdbOutputAvailable("            ", currentTime());
    emit gdbOutputAvailable("stdout:", m_inbuffer);

#if 0
    qDebug() // << "#### start response handling #### "
        << currentTime()
        << lastTime.msecsTo(QTime::currentTime()) << "ms,"
        << "buf: " << m_inbuffer.left(1500) << "..."
        //<< "buf: " << m_inbuffer
        << "size:" << m_inbuffer.size();
#else
    //qDebug() << "buf: " << m_inbuffer;
#endif

    lastTime = QTime::currentTime();

    while (1) {
        if (m_inbuffer.isEmpty())
            break;

        const char *from = m_inbuffer.constData();
        // FIXME: check for line ending in '\n(gdb)\n'
        const char *to = from + m_inbuffer.size();
        const char *inner;

        //const char *oldfrom = from;

        //skipSpaces(from, to);
        skipTerminator(from, to);
        int token = -1;

        // token is a sequence of numbers
        for (inner = from; inner != to; ++inner)
            if (*inner < '0' || *inner > '9')
                break;
        if (from != inner) {
            token = QString(QByteArray(from, inner - from)).toInt();
            from = inner;
            //qDebug() << "found token " << token;
        }

        if (from == to) {
            //qDebug() << "Returning: " << toString();
            break;
        }

        // next char decides kind of record
        const char c = *from++;
        //qDebug() << "CODE:" << c;

        switch (c) {
            case '*':
            case '+':
            case '=': {
                QByteArray asyncClass;
                for (; from != to; ++from) {
                    const char c = *from;
                    if (!isNameChar(c))
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                        break;
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                    asyncClass += *from;
                }
                //qDebug() << "ASYNCCLASS" << asyncClass;

                GdbMi record;
                while (from != to && *from == ',') {
                    ++from; // skip ','
                    GdbMi data;
                    data.parseResultOrValue(from, to);
                    if (data.isValid()) {
                        //qDebug() << "parsed response: " << data.toString();
                        record.m_children += data;
                        record.m_type = GdbMi::Tuple;
                    }
                }
                //dump(oldfrom, from, record.toString());
                skipTerminator(from, to);
                m_inbuffer = QByteArray(from, to - from);
                if (asyncClass == "stopped") {
                    handleAsyncOutput(record);
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                } else if (asyncClass == "running") {
                    // Archer has 'thread-id="all"' here
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                } else {
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                    qDebug() << "IGNORED ASYNC OUTPUT " << record.toString();
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                }
                break;
            }

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            case '~': {
                QString data = GdbMi::parseCString(from, to);
                m_pendingConsoleStreamOutput += data;
                m_inbuffer = QByteArray(from, to - from);
                break;
            }

            case '@': {
                QString data = GdbMi::parseCString(from, to);
                m_pendingTargetStreamOutput += data;
                m_inbuffer = QByteArray(from, to - from);
                break;
            }

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            case '&': {
                QString data = GdbMi::parseCString(from, to);
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                m_pendingLogStreamOutput += data;
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                m_inbuffer = QByteArray(from, to - from);
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                // On Windows, the contents seem to depend on the debugger
                // version and/or OS version used.
                if (data.startsWith("warning:"))
                    qq->showApplicationOutput(data);
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                break;
            }

            case '^': {
                GdbResultRecord record;

                record.token = token;

                for (inner = from; inner != to; ++inner)
                    if (*inner < 'a' || *inner > 'z')
                        break;

                QByteArray resultClass(from, inner - from);

                if (resultClass == "done")
                    record.resultClass = GdbResultDone;
                else if (resultClass == "running")
                    record.resultClass = GdbResultRunning;
                else if (resultClass == "connected")
                    record.resultClass = GdbResultConnected;
                else if (resultClass == "error")
                    record.resultClass = GdbResultError;
                else if (resultClass == "exit")
                    record.resultClass = GdbResultExit;
                else
                    record.resultClass = GdbResultUnknown;

                from = inner;
                skipSpaces(from, to);
                if (from != to && *from == ',') {
                    ++from;
                    record.data.parseTuple_helper(from, to);
                    record.data.m_type = GdbMi::Tuple;
                    record.data.m_name = "data";
                }
                skipSpaces(from, to);
                skipTerminator(from, to);

                //qDebug() << "\nLOG STREAM:" + m_pendingLogStreamOutput;
                //qDebug() << "\nTARGET STREAM:" + m_pendingTargetStreamOutput;
                //qDebug() << "\nCONSOLE STREAM:" + m_pendingConsoleStreamOutput;
                record.data.setStreamOutput("logstreamoutput",
                    m_pendingLogStreamOutput);
                record.data.setStreamOutput("targetstreamoutput",
                    m_pendingTargetStreamOutput);
                record.data.setStreamOutput("consolestreamoutput",
                    m_pendingConsoleStreamOutput);
                QByteArray custom = m_customOutputForToken[token];
                if (!custom.isEmpty())
                    record.data.setStreamOutput("customvaluecontents",
                        '{' + custom + '}');
                //m_customOutputForToken.remove(token);
                m_pendingLogStreamOutput.clear();
                m_pendingTargetStreamOutput.clear();
                m_pendingConsoleStreamOutput.clear();

                //dump(oldfrom, from, record.toString());
                m_inbuffer = QByteArray(from, to - from);
                handleResultRecord(record);
                break;
            }
            default: {
                qDebug() << "FIXME: UNKNOWN CODE: " << c << " IN " << m_inbuffer;
                m_inbuffer = QByteArray(from, to - from);
                break;
            }
        }
    }

    //qDebug() << "##### end response handling ####\n\n\n"
    //    << currentTime() << lastTime.msecsTo(QTime::currentTime());
    lastTime = QTime::currentTime();
}

#ifdef Q_OS_MAC
static void fixMac(QByteArray &out)
{
    // HACK: gdb on Mac mixes MI1 and MI2 syntax. Not nice.
    // it returns:   9^done,locals={{name="a"},{name="w"}}
    // instead of:   9^done,locals=[{name="a"},{name="w"}]
    if (!out.contains("locals={{name"))
        return;

    static const QByteArray termArray("(gdb) ");
    int pos = out.indexOf(termArray);
    if (pos == -1)
        return;

    int pos1 = out.indexOf("={{");
    if (pos1 == -1)
        return;

    int pos2 = out.indexOf("]]");
    if (pos2 == -1)
        return;

    if (pos1 < pos && pos2 < pos) {
        out[pos1 + 1] = '[';
        out[pos2 + 1] = ']';
    }
}
#endif

void GdbEngine::readGdbStandardError()
{
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    qWarning() << "Unexpected gdb stderr:" << m_gdbProc.readAllStandardError();
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}

void GdbEngine::readGdbStandardOutput()
{
    // This is the function called whenever the Gdb process created
    // output. As a rule of thumb, stdout contains _real_ Gdb output
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    // as responses to our command
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    // and "spontaneous" events like messages on loaded shared libraries.
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    // OTOH, stderr contains application output produced by qDebug etc.
    // There is no organized way to pass application stdout output.
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    QByteArray out = m_gdbProc.readAllStandardOutput();

    //qDebug() << "\n\n\nPLUGIN OUT: '" <<  out.data() << "'\n\n\n";

    #ifdef Q_OS_MAC
    fixMac(out);
    #endif

    m_inbuffer.append(out);
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    //QTC_ASSERT(!m_inbuffer.isEmpty(), return);
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    char c = m_inbuffer[m_inbuffer.size() - 1];
    static const QByteArray termArray("(gdb) ");
    if (out.indexOf(termArray) == -1 && c != 10 && c != 13) {
        //qDebug() << "\n\nBuffer not yet filled, waiting for more data to arrive";
        //qDebug() << m_inbuffer.data() << m_inbuffer.size();
        //qDebug() << "\n\n";
        return;
    }

    emit gdbResponseAvailable();
}

void GdbEngine::interruptInferior()
{
    if (m_gdbProc.state() == QProcess::NotRunning)
        return;

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    if (q->m_attachedPID > 0) {
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        if (interruptProcess(q->m_attachedPID))
            qq->notifyInferiorStopped();
        return;
    }

#ifdef Q_OS_MAC
    sendCommand("-exec-interrupt", GdbExecInterrupt);
    qq->notifyInferiorStopped();
#else
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    debugMessage(QString("CANNOT STOP INFERIOR %1").arg(m_gdbProc.pid()));
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    if (interruptChildProcess(m_gdbProc.pid()))
        qq->notifyInferiorStopped();
#endif
}

void GdbEngine::maybeHandleInferiorPidChanged(const QString &pid0)
{
    int pid = pid0.toInt();
    if (pid == 0) {
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        debugMessage(QString("Cannot parse PID from %1").arg(pid0));
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        return;
    }
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    if (pid == q->m_attachedPID)
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        return;
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    debugMessage(QString("FOUND PID %1").arg(pid));
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    q->m_attachedPID = pid;
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    qq->notifyInferiorPidChanged(pid); 
}

void GdbEngine::sendSynchronizedCommand(const QString & command,
    int type, const QVariant &cookie, bool needStop)
{
    sendCommand(command, type, cookie, needStop, true);
}

void GdbEngine::sendCommand(const QString &command, int type,
    const QVariant &cookie, bool needStop, bool synchronized)
{
    if (m_gdbProc.state() == QProcess::NotRunning) {
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        debugMessage("NO GDB PROCESS RUNNING, CMD IGNORED: " + command);
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        return;
    }

    bool temporarilyStopped = false;
    if (needStop && q->status() == DebuggerInferiorRunning) {
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        q->showStatusMessage(tr("Temporarily stopped"));
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        interruptInferior();
        temporarilyStopped = true;
    }

    ++currentToken();
    if (synchronized) {
        ++m_pendingRequests;
        PENDING_DEBUG("   TYPE " << type << " INCREMENTS PENDING TO: "
            << m_pendingRequests << command);
    } else {
        PENDING_DEBUG("   UNKNOWN TYPE " << type << " LEAVES PENDING AT: "
            << m_pendingRequests << command);
    }

    GdbCookie cmd;
    cmd.synchronized = synchronized;
    cmd.command = command;
    cmd.command = QString::number(currentToken()) + cmd.command;
    if (cmd.command.contains("%1"))
        cmd.command = cmd.command.arg(currentToken());
    cmd.type = type;
    cmd.cookie = cookie;

    m_cookieForToken[currentToken()] = cmd;

    if (!command.isEmpty()) {
        m_gdbProc.write(cmd.command.toLatin1() + "\r\n");
        //emit gdbInputAvailable(QString(), "         " +  currentTime());
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        //emit gdbInputAvailable(QString(), "[" + currentTime() + "]    " + cmd.command);
        emit gdbInputAvailable(QString(), cmd.command);
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    }

    if (temporarilyStopped)
        sendCommand("-exec-continue");

    // slows down
    //qApp->processEvents();
}

void GdbEngine::handleResultRecord(const GdbResultRecord &record)
{
    //qDebug() << "TOKEN: " << record.token
    //    << " ACCEPTABLE: " << m_oldestAcceptableToken;
    //qDebug() << "";
    //qDebug() << "\nRESULT" << record.token << record.toString();

    int token = record.token;
    if (token == -1)
        return;

    GdbCookie cmd = m_cookieForToken.take(token);

    // FIXME: this falsely rejects results from the custom dumper recognition
    // procedure, too...
    if (record.token < m_oldestAcceptableToken) {
        //qDebug() << "### SKIPPING OLD RESULT " << record.toString();
        //QMessageBox::information(m_mainWindow, tr("Skipped"), "xxx");
        return;
    }

#if 0
    qDebug() << "# handleOutput, "
        << "cmd type: " << cmd.type
        << "cmd synchronized: " << cmd.synchronized
        << "\n record: " << record.toString();
#endif

    // << "\n data: " << record.data.toString(true);

    if (cmd.type != GdbInvalidCommand)
        handleResult(record, cmd.type, cmd.cookie);

    if (cmd.synchronized) {
        --m_pendingRequests;
        PENDING_DEBUG("   TYPE " << cmd.type << " DECREMENTS PENDING TO: "
            << m_pendingRequests << cmd.command);
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        if (m_pendingRequests <= 0) {
            PENDING_DEBUG(" ....  AND TRIGGERS MODEL UPDATE");
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            updateWatchModel2();
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        }
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    } else {
        PENDING_DEBUG("   UNKNOWN TYPE " << cmd.type << " LEAVES PENDING AT: "
            << m_pendingRequests << cmd.command);
    }
}

void GdbEngine::handleResult(const GdbResultRecord & record, int type,
    const QVariant & cookie)
{
    switch (type) {
        case GdbExecNext:
        case GdbExecStep:
        case GdbExecNextI:
        case GdbExecStepI:
        case GdbExecContinue:
        case GdbExecFinish:
            // evil code sharing
            handleExecRun(record);
            break;
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        case GdbStart:
            handleStart(record);
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            break;
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        case GdbInfoProc:
            handleInfoProc(record);
            break;
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        case GdbInfoThreads:
            handleInfoThreads(record);
            break;
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        case GdbShowVersion:
            handleShowVersion(record);
            break;
        case GdbFileExecAndSymbols:
            handleFileExecAndSymbols(record);
            break;
        case GdbExecRunToFunction:
            // that should be "^running". We need to handle the resulting
            // "Stopped"
            //handleExecRunToFunction(record);
            break;
        case GdbExecInterrupt:
            break;
        case GdbExecJumpToLine:
            handleExecJumpToLine(record);
            break;
        case GdbQueryPwd:
            handleQueryPwd(record);
            break;
        case GdbQuerySources:
            handleQuerySources(record);
            break;
        case GdbAsyncOutput2:
            handleAsyncOutput2(cookie.value<GdbMi>());
            break;
        case GdbInfoShared:
            handleInfoShared(record);
            break;
        case GdbQueryDataDumper1:
            handleQueryDataDumper1(record);
            break;
        case GdbQueryDataDumper2:
            handleQueryDataDumper2(record);
            break;

        case BreakList:
            handleBreakList(record);
            break;
        case BreakInsert:
            handleBreakInsert(record, cookie.toInt());
            break;
        case BreakInsert1:
            handleBreakInsert1(record, cookie.toInt());
            break;
        case BreakInfo:
            handleBreakInfo(record, cookie.toInt());
            break;
        case BreakEnablePending:
        case BreakDelete:
            // nothing
            break;
        case BreakIgnore:
            handleBreakIgnore(record, cookie.toInt());
            break;
        case BreakCondition:
            handleBreakCondition(record, cookie.toInt());
            break;

        case DisassemblerList:
            handleDisassemblerList(record, cookie.toString());
            break;

        case ModulesList:
            handleModulesList(record);
            break;

        case RegisterListNames:
            handleRegisterListNames(record);
            break;
        case RegisterListValues:
            handleRegisterListValues(record);
            break;

        case StackListFrames:
            handleStackListFrames(record);
            break;
        case StackListThreads:
            handleStackListThreads(record, cookie.toInt());
            break;
        case StackSelectThread:
            handleStackSelectThread(record, cookie.toInt());
            break;
        case StackListLocals:
            handleStackListLocals(record);
            break;
        case StackListArguments:
            handleStackListArguments(record);
            break;

        case WatchVarListChildren:
            handleVarListChildren(record, cookie.value<WatchData>());
            break;
        case WatchVarCreate:
            handleVarCreate(record, cookie.value<WatchData>());
            break;
        case WatchVarAssign:
            handleVarAssign();
            break;
        case WatchEvaluateExpression:
            handleEvaluateExpression(record, cookie.value<WatchData>());
            break;
        case WatchToolTip:
            handleToolTip(record, cookie.toString());
            break;
        case WatchDumpCustomValue1:
            handleDumpCustomValue1(record, cookie.value<WatchData>());
            break;
        case WatchDumpCustomValue2:
            handleDumpCustomValue2(record, cookie.value<WatchData>());
            break;
        case WatchDumpCustomSetup:
            handleDumpCustomSetup(record);
            break;

        default:
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            debugMessage(QString("FIXME: GdbEngine::handleResult: "
                "should not happen %1").arg(type));
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            break;
    }
}

void GdbEngine::executeDebuggerCommand(const QString &command)
{
    //createGdbProcessIfNeeded();
    if (m_gdbProc.state() == QProcess::NotRunning) {
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        debugMessage("NO GDB PROCESS RUNNING, PLAIN CMD IGNORED: " + command);
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        return;
    }

    GdbCookie cmd;
    cmd.command = command;
    cmd.type = -1;

    emit gdbInputAvailable(QString(), cmd.command);
    m_gdbProc.write(cmd.command.toLatin1() + "\r\n");
}

void GdbEngine::handleQueryPwd(const GdbResultRecord &record)
{
    // FIXME: remove this special case as soon as 'pwd'
    // is supported by MI
    //qDebug() << "PWD OUTPUT:" <<  record.toString();
    // Gdb responses _unless_ we get an error first.
    if (record.resultClass == GdbResultDone) {
#ifdef Q_OS_LINUX
        // "5^done,{logstreamoutput="pwd ",consolestreamoutput
        // ="Working directory /home/apoenitz/dev/work/test1.  "}
        m_pwd = record.data.findChild("consolestreamoutput").data();
        int pos = m_pwd.indexOf("Working directory");
        m_pwd = m_pwd.mid(pos + 18);
        m_pwd = m_pwd.trimmed();
        if (m_pwd.endsWith('.'))
            m_pwd.chop(1);
#endif
#ifdef Q_OS_WIN
        // ~"Working directory C:\\Users\\Thomas\\Documents\\WBTest3\\debug.\n"
        m_pwd = record.data.findChild("consolestreamoutput").data();
        m_pwd = m_pwd.trimmed();
#endif
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        debugMessage("PWD RESULT: " + m_pwd);
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    }
}

void GdbEngine::handleQuerySources(const GdbResultRecord &record)
{
    if (record.resultClass == GdbResultDone) {
        m_shortToFullName.clear();
        m_fullToShortName.clear();
        // "^done,files=[{file="../../../../bin/gdbmacros/gdbmacros.cpp",
        // fullname="/data5/dev/ide/main/bin/gdbmacros/gdbmacros.cpp"},
        GdbMi files = record.data.findChild("files");
        foreach (const GdbMi &item, files.children()) {
            QString fileName = item.findChild("file").data();
            GdbMi fullName = item.findChild("fullname");
            QString full = fullName.data();
            #ifdef Q_OS_WIN
            full = QDir::cleanPath(full);
            #endif
            if (fullName.isValid() && QFileInfo(full).isReadable()) {
                //qDebug() << "STORING 2: " << fileName << full;
                m_shortToFullName[fileName] = full;
                m_fullToShortName[full] = fileName;
            }
        }
    }
}

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void GdbEngine::handleInfoThreads(const GdbResultRecord &record)
{
    if (record.resultClass == GdbResultDone) {
        // FIXME: use something more robust
        // WIN:     * 3 Thread 2312.0x4d0  0x7c91120f in ?? () 
        // LINUX:   * 1 Thread 0x7f466273c6f0 (LWP 21455)  0x0000000000404542 in ...
        QRegExp re(QLatin1String("Thread (\\d+)\\.0x.* in"));
        QString data = record.data.findChild("consolestreamoutput").data();
        if (re.indexIn(data) != -1)
            maybeHandleInferiorPidChanged(re.cap(1));
    }
}

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void GdbEngine::handleInfoProc(const GdbResultRecord &record)
{
    if (record.resultClass == GdbResultDone) {
        #if defined(Q_OS_MAC)
        //^done,process-id="85075"
        maybeHandleInferiorPidChanged(record.data.findChild("process-id").data());
        #endif

        #if defined(Q_OS_LINUX) || defined(Q_OS_WIN)
        // FIXME: use something more robust
        QRegExp re(QLatin1String("process (\\d+)"));
        QString data = record.data.findChild("consolestreamoutput").data();
        if (re.indexIn(data) != -1)
            maybeHandleInferiorPidChanged(re.cap(1));
        #endif
    }
}

void GdbEngine::handleInfoShared(const GdbResultRecord &record)
{
    if (record.resultClass == GdbResultDone) {
        // let the modules handler do the parsing
        handleModulesList(record);
    }
}

void GdbEngine::handleExecJumpToLine(const GdbResultRecord &record)
{
    // FIXME: remove this special case as soon as 'jump'
    // is supported by MI
    // "&"jump /home/apoenitz/dev/work/test1/test1.cpp:242"
    // ~"Continuing at 0x4058f3."
    // ~"run1 (argc=1, argv=0x7fffb213a478) at test1.cpp:242"
    // ~"242\t x *= 2;"
    //109^done"
    qq->notifyInferiorStopped();
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    q->showStatusMessage(tr("Jumped. Stopped."));
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    QString output = record.data.findChild("logstreamoutput").data();
    if (!output.isEmpty())
        return;
    QString fileAndLine = output.section(' ', 1, 1);
    QString file = fileAndLine.section(':', 0, 0);
    int line = fileAndLine.section(':', 1, 1).toInt();
    q->gotoLocation(file, line, true);
}

void GdbEngine::handleExecRunToFunction(const GdbResultRecord &record)
{
    // FIXME: remove this special case as soon as there's a real
    // reason given when the temporary breakpoint is hit.
    // reight now we get:
    // 14*stopped,thread-id="1",frame={addr="0x0000000000403ce4",
    // func="foo",args=[{name="str",value="@0x7fff0f450460"}],
    // file="main.cpp",fullname="/tmp/g/main.cpp",line="37"}
    qq->notifyInferiorStopped();
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    q->showStatusMessage(tr("Run to Function finished. Stopped."));
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    GdbMi frame = record.data.findChild("frame");
    QString file = frame.findChild("fullname").data();
    int line = frame.findChild("line").data().toInt();
    qDebug() << "HIT: " << file << line << " IN " << frame.toString()
        << " -- " << record.toString();
    q->gotoLocation(file, line, true);
}

static bool isExitedReason(const QString &reason)
{
    return reason == QLatin1String("exited-normally")   // inferior exited normally
        || reason == QLatin1String("exited-signalled")  // inferior exited because of a signal
        //|| reason == QLatin1String("signal-received") // inferior received signal
        || reason == QLatin1String("exited");           // inferior exited
}

static bool isStoppedReason(const QString &reason)
{
    return reason == QLatin1String("function-finished")  // -exec-finish
        || reason == QLatin1String("signal-received")  // handled as "isExitedReason"
        || reason == QLatin1String("breakpoint-hit")     // -exec-continue
        || reason == QLatin1String("end-stepping-range") // -exec-next, -exec-step
        || reason == QLatin1String("location-reached")   // -exec-until
        || reason == QLatin1String("access-watchpoint-trigger")
        || reason == QLatin1String("read-watchpoint-trigger")
#ifdef Q_OS_MAC
        || reason.isEmpty()
#endif
    ;
}

void GdbEngine::handleAsyncOutput(const GdbMi &data)
{
    const QString reason = data.findChild("reason").data();

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    //MAC: bool isFirstStop = data.findChild("bkptno").data() == "1";
    //!MAC: startSymbolName == data.findChild("frame").findChild("func")
    if (m_waitingForFirstBreakpointToBeHit) {
        m_waitingForFirstBreakpointToBeHit = false;
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        //
        // that's the "early stop"
        //  
        #if defined(Q_OS_WIN)
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        sendCommand("info thread", GdbInfoThreads);
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        #endif
        #if defined(Q_OS_LINUX)
        sendCommand("info proc", GdbInfoProc);
        #endif
        #if defined(Q_OS_MAC)
        sendCommand("info pid", GdbInfoProc, QVariant(), true);
        #endif
        sendCommand("-file-list-exec-source-files", GdbQuerySources);
        tryLoadCustomDumpers();

        // intentionally after tryLoadCustomDumpers(),
        // otherwise we'd interupt solib loading.
        if (qq->wantsAllPluginBreakpoints()) {
            sendCommand("set auto-solib-add on");
            sendCommand("set stop-on-solib-events 0");
            sendCommand("sharedlibrary .*");
        } else if (qq->wantsSelectedPluginBreakpoints()) {
            sendCommand("set auto-solib-add on");
            sendCommand("set stop-on-solib-events 1");
            sendCommand("sharedlibrary "+qq->selectedPluginBreakpointsPattern());
        } else if (qq->wantsNoPluginBreakpoints()) {
            // should be like that already
            sendCommand("set auto-solib-add off");
            sendCommand("set stop-on-solib-events 0");
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        }
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        // nicer to see a bit of the world we live in
        reloadModules();
        // this will "continue" if done
        m_waitingForBreakpointSynchronizationToContinue = true;
        QTimer::singleShot(0, this, SLOT(attemptBreakpointSynchronization()));
        return;
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    }

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    QString msg = data.findChild("consolestreamoutput").data();
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    if (msg.contains("Stopped due to shared library event") || reason.isEmpty()) {
        if (qq->wantsSelectedPluginBreakpoints()) {
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            debugMessage("SHARED LIBRARY EVENT: " + data.toString());
            debugMessage("PATTERN: " + qq->selectedPluginBreakpointsPattern());
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            sendCommand("sharedlibrary " + qq->selectedPluginBreakpointsPattern());
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            continueInferior();
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            q->showStatusMessage(tr("Loading %1...").arg(QString(data.toString())));
            return;
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        }
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        m_modulesListOutdated = true;
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        // fall through
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    }

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    // seen on XP after removing a breakpoint while running
    //  stdout:945*stopped,reason="signal-received",signal-name="SIGTRAP",
    //  signal-meaning="Trace/breakpoint trap",thread-id="2",
    //  frame={addr="0x7c91120f",func="ntdll!DbgUiConnectToDbg",
    //  args=[],from="C:\\WINDOWS\\system32\\ntdll.dll"}
    if (reason == "signal-received"
          && data.findChild("signal-name").toString() == "SIGTRAP") {
        continueInferior();
        return;
    }

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    if (isExitedReason(reason)) {
        qq->notifyInferiorExited();
        QString msg = "Program exited normally";
        if (reason == "exited") {
            msg = "Program exited with exit code "
                + data.findChild("exit-code").toString();
        } else if (reason == "exited-signalled") {
            msg = "Program exited after receiving signal "
                + data.findChild("signal-name").toString();
        } else if (reason == "signal-received") {
            msg = "Program exited after receiving signal "
                + data.findChild("signal-name").toString();
        }
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        q->showStatusMessage(msg);
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        // FIXME: shouldn't this use a statis change?
        debugMessage("CALLING PARENT EXITDEBUGGER");
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        q->exitDebugger();
        return;
    }

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    //tryLoadCustomDumpers();
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    // jump over well-known frames
    static int stepCounter = 0;
    if (qq->skipKnownFrames()) {
        if (reason == "end-stepping-range" || reason == "function-finished") {
            GdbMi frame = data.findChild("frame");
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            //debugMessage(frame.toString());
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            m_currentFrame = frame.findChild("addr").data() + '%' +
                 frame.findChild("func").data() + '%';

            QString funcName = frame.findChild("func").data();
            QString fileName = frame.findChild("file").data();
            if (isLeavableFunction(funcName, fileName)) {
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                //debugMessage("LEAVING" + funcName);
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                ++stepCounter;
                q->stepOutExec();
                //stepExec();
                return;
            }
            if (isSkippableFunction(funcName, fileName)) {
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                //debugMessage("SKIPPING" + funcName);
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                ++stepCounter;
                q->stepExec();
                return;
            }
            //if (stepCounter)
            //    qDebug() << "STEPCOUNTER:" << stepCounter;
            stepCounter = 0;
        }
    }

    if (isStoppedReason(reason) || reason.isEmpty()) {
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        if (m_modulesListOutdated) {
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            reloadModules();
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            m_modulesListOutdated = false;
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        }
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        // Need another round trip
        if (reason == "breakpoint-hit") {
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            q->showStatusMessage(tr("Stopped at breakpoint"));
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            GdbMi frame = data.findChild("frame");
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            //debugMessage("HIT BREAKPOINT: " + frame.toString());
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            m_currentFrame = frame.findChild("addr").data() + '%' +
                 frame.findChild("func").data() + '%';

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            QApplication::alert(q->mainWindow(), 3000);
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            sendCommand("-file-list-exec-source-files", GdbQuerySources);
            sendCommand("-break-list", BreakList);
            QVariant var = QVariant::fromValue<GdbMi>(data);
            sendCommand("p 0", GdbAsyncOutput2, var);  // dummy
        } else {
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            q->showStatusMessage(tr("Stopped: \"%1\"").arg(reason));
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            handleAsyncOutput2(data);
        }
        return;
    }

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    debugMessage("STOPPED FOR UNKNOWN REASON: " + data.toString());
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    // Ignore it. Will be handled with full response later in the
    // JumpToLine or RunToFunction handlers
#if 1
    // FIXME: remove this special case as soon as there's a real
    // reason given when the temporary breakpoint is hit.
    // reight now we get:
    // 14*stopped,thread-id="1",frame={addr="0x0000000000403ce4",
    // func="foo",args=[{name="str",value="@0x7fff0f450460"}],
    // file="main.cpp",fullname="/tmp/g/main.cpp",line="37"}
    //
    // MAC yields sometimes:
    // stdout:3661*stopped,time={wallclock="0.00658",user="0.00142",
    // system="0.00136",start="1218810678.805432",end="1218810678.812011"}
    q->resetLocation();
    qq->notifyInferiorStopped();
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    q->showStatusMessage(tr("Run to Function finished. Stopped."));
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    GdbMi frame = data.findChild("frame");
    QString file = frame.findChild("fullname").data();
    int line = frame.findChild("line").data().toInt();
    qDebug() << "HIT: " << file << line << " IN " << frame.toString()
        << " -- " << data.toString();
    q->gotoLocation(file, line, true);
#endif
}


void GdbEngine::handleAsyncOutput2(const GdbMi &data)
{
    qq->notifyInferiorStopped();

    //
    // Stack
    //
    qq->stackHandler()->setCurrentIndex(0);
    updateLocals(); // Quick shot

    int currentId = data.findChild("thread-id").data().toInt();
    sendSynchronizedCommand("-stack-list-frames", StackListFrames);
    if (supportsThreads())
        sendSynchronizedCommand("-thread-list-ids", StackListThreads, currentId);

    //
    // Disassembler
    //
    // Linux:
    //"79*stopped,reason="end-stepping-range",reason="breakpoint-hit",bkptno="1",
    //thread-id="1",frame={addr="0x0000000000405d8f",func="run1",
    //args=[{name="argc",value="1"},{name="argv",value="0x7fffb7c23058"}],
    //file="test1.cpp",fullname="/home/apoenitz/dev/work/test1/test1.cpp",line="261"}"
    // Mac: (but only sometimes)
    m_address = data.findChild("frame").findChild("addr").data();
    qq->reloadDisassembler();

    //
    // Registers
    //
    qq->reloadRegisters();
}

void GdbEngine::handleShowVersion(const GdbResultRecord &response)
{
    if (response.resultClass == GdbResultDone) {
        m_gdbVersion = 100;
        QString msg = response.data.findChild("consolestreamoutput").data();
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        QRegExp supported("GNU gdb(.*) (\\d+)\\.(\\d+)(\\.(\\d+))?");
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        if (supported.indexIn(msg) == -1) {
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            debugMessage("UNSUPPORTED GDB VERSION " + msg);
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            QStringList list = msg.split("\n");
            while (list.size() > 2)
                list.removeLast();
            msg = tr("The debugger you are using identifies itself as:")
                + "<p><p>" + list.join("<br>") + "<p><p>"
                + tr("This version is not officially supported by Qt Creator.\n"
                     "Debugging will most likely not work well.\n"
                     "Using gdb 6.7 or later is strongly recommended.");
#if 0
            // ugly, but 'Show again' check box...
            static QErrorMessage *err = new QErrorMessage(m_mainWindow);
            err->setMinimumSize(400, 300);
            err->showMessage(msg);
#else
            //QMessageBox::information(m_mainWindow, tr("Warning"), msg);
#endif
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        } else {
            m_gdbVersion = 10000 * supported.cap(2).toInt()
                         +   100 * supported.cap(3).toInt()
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                         +     1 * supported.cap(5).toInt();
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            //debugMessage(QString("GDB VERSION: %1").arg(m_gdbVersion));
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        }
    }
}

void GdbEngine::handleFileExecAndSymbols
    (const GdbResultRecord &response)
{
    if (response.resultClass == GdbResultDone) {
        //m_breakHandler->clearBreakMarkers();
    } else if (response.resultClass == GdbResultError) {
        QString msg = response.data.findChild("msg").data();
        QMessageBox::critical(q->mainWindow(), tr("Error"),
            tr("Starting executable failed:\n") + msg);
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        QTC_ASSERT(q->status() == DebuggerInferiorRunning, /**/);
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        interruptInferior();
    }
}

void GdbEngine::handleExecRun(const GdbResultRecord &response)
{
    if (response.resultClass == GdbResultRunning) {
        qq->notifyInferiorRunning();
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        q->showStatusMessage(tr("Running..."));
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    } else if (response.resultClass == GdbResultError) {
        QString msg = response.data.findChild("msg").data();
        if (msg == "Cannot find bounds of current function") {
            qq->notifyInferiorStopped();
            //q->showStatusMessage(tr("No debug information available. "
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            //  "Leaving function..."));
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            //stepOutExec();
        } else {
            QMessageBox::critical(q->mainWindow(), tr("Error"),
                tr("Starting executable failed:\n") + msg);
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            QTC_ASSERT(q->status() == DebuggerInferiorRunning, /**/);
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            interruptInferior();
        }
    }
}

void GdbEngine::queryFullName(const QString &fileName, QString *full)
{
    *full = fullName(fileName);
}

QString GdbEngine::shortName(const QString &fullName)
{
    return m_fullToShortName.value(fullName, QString());
}

QString GdbEngine::fullName(const QString &fileName)
{
    //QString absName = m_manager->currentWorkingDirectory() + "/" + file; ??
    if (fileName.isEmpty())
        return QString();
    QString full = m_shortToFullName.value(fileName, QString());
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    //debugMessage("RESOLVING: " + fileName + " " +  full);
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    if (!full.isEmpty())
        return full;
    QFileInfo fi(fileName);
    if (!fi.isReadable())
        return QString();
    full = fi.absoluteFilePath();
    #ifdef Q_OS_WIN
    full = QDir::cleanPath(full);
    #endif
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    //debugMessage("STORING: " + fileName + " " + full);
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    m_shortToFullName[fileName] = full;
    m_fullToShortName[full] = fileName;
    return full;
}

QString GdbEngine::fullName(const QStringList &candidates)
{
    QString full;
    foreach (const QString &fileName, candidates) {
        full = fullName(fileName);
        if (!full.isEmpty())
            return full;
    }
    foreach (const QString &fileName, candidates) {
        if (!fileName.isEmpty())
            return fileName;
    }
    return full;
}

void GdbEngine::shutdown()
{
    exitDebugger();
}

void GdbEngine::exitDebugger()
{
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    debugMessage(QString("GDBENGINE EXITDEBUFFER: %1").arg(m_gdbProc.state()));
    if (m_gdbProc.state() == QProcess::Starting) {
        debugMessage(QString("WAITING FOR GDB STARTUP TO SHUTDOWN: %1")
            .arg(m_gdbProc.state()));
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        m_gdbProc.waitForStarted();
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    }
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    if (m_gdbProc.state() == QProcess::Running) {
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        debugMessage(QString("WAITING FOR RUNNING GDB TO SHUTDOWN: %1")
            .arg(m_gdbProc.state()));
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        interruptInferior();
        sendCommand("kill");
        sendCommand("-gdb-exit");
        // 20s can easily happen when loading webkit debug information
        m_gdbProc.waitForFinished(20000);
        if (m_gdbProc.state() != QProcess::Running) {
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            debugMessage(QString("FORCING TERMINATION: %1")
                .arg(m_gdbProc.state()));
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            m_gdbProc.terminate();
            m_gdbProc.waitForFinished(20000);
        }
    }
    if (m_gdbProc.state() != QProcess::NotRunning)
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        debugMessage("PROBLEM STOPPING DEBUGGER");
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    m_outputCollector.shutdown();
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    initializeVariables();
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    //q->settings()->m_debugDumpers = false;
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}


int GdbEngine::currentFrame() const
{
    return qq->stackHandler()->currentIndex();
}


bool GdbEngine::startDebugger()
{
    QStringList gdbArgs;

    QFileInfo fi(q->m_executable);
    QString fileName = '"' + fi.absoluteFilePath() + '"';

    if (m_gdbProc.state() != QProcess::NotRunning) {
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        debugMessage("GDB IS ALREADY RUNNING!");
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        return false;
    }

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    if (!m_outputCollector.listen()) {
        QMessageBox::critical(q->mainWindow(), tr("Debugger Startup Failure"),
                              tr("Cannot set up communication with child process: %1")
                              .arg(m_outputCollector.errorString()));
        return false;
    }

    gdbArgs.prepend(QLatin1String("--tty=") + m_outputCollector.serverName());

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    //gdbArgs.prepend(QLatin1String("--quiet"));
    gdbArgs.prepend(QLatin1String("mi"));
    gdbArgs.prepend(QLatin1String("-i"));

    if (!q->m_workingDir.isEmpty())
        m_gdbProc.setWorkingDirectory(q->m_workingDir);
    if (!q->m_environment.isEmpty())
        m_gdbProc.setEnvironment(q->m_environment);

    #if 0
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    qDebug() << "Command: " << q->settings()->m_gdbCmd;
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    qDebug() << "WorkingDirectory: " << m_gdbProc.workingDirectory();
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    qDebug() << "ScriptFile: " << q->settings()->m_scriptFile;
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    qDebug() << "Environment: " << m_gdbProc.environment();
    qDebug() << "Arguments: " << gdbArgs;
    qDebug() << "BuildDir: " << q->m_buildDir;
    qDebug() << "ExeFile: " << q->m_executable;
    #endif

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    q->showStatusMessage(tr("Starting Debugger"));
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    emit gdbInputAvailable(QString(), q->settings()->m_gdbCmd + ' ' + gdbArgs.join(" "));
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    m_gdbProc.start(q->settings()->m_gdbCmd, gdbArgs);
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    m_gdbProc.waitForStarted();

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    if (m_gdbProc.state() != QProcess::Running) {
        QMessageBox::critical(q->mainWindow(), tr("Debugger Startup Failure"),
                              tr("Cannot start debugger: %1").arg(m_gdbProc.errorString()));
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        m_outputCollector.shutdown();
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        return false;
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    }
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    q->showStatusMessage(tr("Gdb Running"));
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    sendCommand("show version", GdbShowVersion);
    //sendCommand("-enable-timings");
    sendCommand("set print static-members off"); // Seemingly doesn't work.
    //sendCommand("define hook-stop\n-thread-list-ids\n-stack-list-frames\nend");
    //sendCommand("define hook-stop\nprint 4\nend");
    //sendCommand("define hookpost-stop\nprint 5\nend");
    //sendCommand("define hook-call\nprint 6\nend");
    //sendCommand("define hookpost-call\nprint 7\nend");
    //sendCommand("set print object on"); // works with CLI, but not MI
    //sendCommand("set step-mode on");  // we can't work with that yes
    //sendCommand("set exec-done-display on");
    //sendCommand("set print pretty on");
    //sendCommand("set confirm off");
    //sendCommand("set pagination off");
    sendCommand("set breakpoint pending on", BreakEnablePending);
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    sendCommand("set print elements 10000");
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    // one of the following is needed to prevent crashes in gdb on code like:
    //  template <class T> T foo() { return T(0); }
    //  int main() { return foo<int>(); }
    //  (gdb) call 'int foo<int>'()
    //  /build/buildd/gdb-6.8/gdb/valops.c:2069: internal-error:
    sendCommand("set overload-resolution off");
    //sendCommand("set demangle-style none");

    // From the docs:
    //  Stop means reenter debugger if this signal happens (implies print).
    //  Print means print a message if this signal happens.
    //  Pass means let program see this signal;
    //  otherwise program doesn't know.
    //  Pass and Stop may be combined.
    // We need "print" as otherwise we would get no feedback whatsoever
    // Custom Dumper crashs which happen regularily for when accessing
    // uninitialized variables.
    sendCommand("handle SIGSEGV nopass stop print");

    // This is useful to kill the inferior whenever gdb dies.
    //sendCommand("handle SIGTERM pass nostop print");

    sendCommand("set unwindonsignal on");
    sendCommand("pwd", GdbQueryPwd);

    #ifdef Q_OS_MAC
    sendCommand("-gdb-set inferior-auto-start-cfm off");
    sendCommand("-gdb-set sharedLibrary load-rules "
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            "dyld \".*libSystem.*\" all "
            "dyld \".*libauto.*\" all "
            "dyld \".*AppKit.*\" all "
            "dyld \".*PBGDBIntrospectionSupport.*\" all "
            "dyld \".*Foundation.*\" all "
            "dyld \".*CFDataFormatters.*\" all "
            "dyld \".*libobjc.*\" all "
            "dyld \".*CarbonDataFormatters.*\" all");
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    #endif
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    QString scriptFileName = q->settings()->m_scriptFile;
    if (!scriptFileName.isEmpty()) {
        QFile scriptFile(scriptFileName);
        if (scriptFile.open(QIODevice::ReadOnly)) {
            sendCommand("source " + scriptFileName);
        } else {
            QMessageBox::warning(q->mainWindow(),
            tr("Cannot find debugger initialization script"),
            tr("The debugger settings point to a script file at '%1' "
               "which is not accessible. If a script file is not needed, "
               "consider clearing that entry to avoid this warning. "
              ).arg(scriptFileName));
        }
    }

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    if (q->startMode() == q->attachExternal) {
        sendCommand("attach " + QString::number(q->m_attachedPID));
    } else {
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        emit gdbInputAvailable(QString(), QString());
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        sendCommand("-file-exec-and-symbols " + fileName, GdbFileExecAndSymbols);
        //sendCommand("file " + fileName, GdbFileExecAndSymbols);
        #ifdef Q_OS_MAC
        sendCommand("sharedlibrary apply-load-rules all");
        #endif
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        setTokenBarrier();
        if (!q->m_processArgs.isEmpty())
            sendCommand("-exec-arguments " + q->m_processArgs.join(" "));
        sendCommand("set auto-solib-add off");
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        sendCommand("x/2i " + startSymbolName(), GdbStart);
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    }

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    sendCommand("-data-list-register-names", RegisterListNames);

    // set all to "pending"
    if (q->startMode() == q->attachExternal)
        qq->breakHandler()->removeAllBreakpoints();
    else
        qq->breakHandler()->setAllPending();

    return true;
}

void GdbEngine::continueInferior()
{
    q->resetLocation();
    setTokenBarrier();
    qq->notifyInferiorRunningRequested();
    emit gdbInputAvailable(QString(), QString());
    sendCommand("-exec-continue", GdbExecContinue);
}

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void GdbEngine::handleStart(const GdbResultRecord &response)
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{
    if (response.resultClass == GdbResultDone) {
        // stdout:&"x/2i _start\n"
        // stdout:~"0x404540 <_start>:\txor    %ebp,%ebp\n"
        // stdout:~"0x404542 <_start+2>:\tmov    %rdx,%r9\n"
        QString msg = response.data.findChild("consolestreamoutput").data();
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        QRegExp needle("0x([0-9a-f]+) <" + startSymbolName() + "\\+.*>:");
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        if (needle.indexIn(msg) != -1) {
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            //debugMessage("STREAM: " + msg + " " + needle.cap(1));
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            sendCommand("tbreak *0x" + needle.cap(1));
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            m_waitingForFirstBreakpointToBeHit = true;
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            sendCommand("-exec-run");
            qq->notifyInferiorRunningRequested();
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        } else {
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            debugMessage("PARSING START ADDRESS FAILED: " + msg);
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        }
    } else if (response.resultClass == GdbResultError) {
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        debugMessage("PARSING START ADDRESS FAILED: " + response.toString());
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    }
}

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void GdbEngine::stepExec()
{
    setTokenBarrier();
    qq->notifyInferiorRunningRequested();
    emit gdbInputAvailable(QString(), QString());
    sendCommand("-exec-step", GdbExecStep);
}

void GdbEngine::stepIExec()
{
    setTokenBarrier();
    qq->notifyInferiorRunningRequested();
    sendCommand("-exec-step-instruction", GdbExecStepI);
}

void GdbEngine::stepOutExec()
{
    setTokenBarrier();
    qq->notifyInferiorRunningRequested();
    sendCommand("-exec-finish", GdbExecFinish);
}

void GdbEngine::nextExec()
{
    setTokenBarrier();
    qq->notifyInferiorRunningRequested();
    emit gdbInputAvailable(QString(), QString());
    sendCommand("-exec-next", GdbExecNext);
}

void GdbEngine::nextIExec()
{
    setTokenBarrier();
    qq->notifyInferiorRunningRequested();
    sendCommand("-exec-next-instruction", GdbExecNextI);
}

void GdbEngine::runToLineExec(const QString &fileName, int lineNumber)
{
    setTokenBarrier();
    qq->notifyInferiorRunningRequested();
    sendCommand("-exec-until " + fileName + ":" + QString::number(lineNumber));
}

void GdbEngine::runToFunctionExec(const QString &functionName)
{
    setTokenBarrier();
    sendCommand("-break-insert -t " + functionName);
    qq->notifyInferiorRunningRequested();
    sendCommand("-exec-continue", GdbExecRunToFunction);
}

void GdbEngine::jumpToLineExec(const QString &fileName, int lineNumber)
{
#if 1
    // not available everywhere?
    //sendCliCommand("tbreak " + fileName + ":" + QString::number(lineNumber));
    sendCommand("-break-insert -t " + fileName + ":" + QString::number(lineNumber));
    sendCommand("jump " + fileName + ":" + QString::number(lineNumber));
    // will produce something like
    //  &"jump /home/apoenitz/dev/work/test1/test1.cpp:242"
    //  ~"Continuing at 0x4058f3."
    //  ~"run1 (argc=1, argv=0x7fffbf1f5538) at test1.cpp:242"
    //  ~"242\t x *= 2;"
    //  23^done"
    q->gotoLocation(fileName, lineNumber, true);
    //setBreakpoint();
    //sendCommand("jump " + fileName + ":" + QString::number(lineNumber));
#else
    q->gotoLocation(fileName, lineNumber, true);
    setBreakpoint(fileName, lineNumber);
    sendCommand("jump " + fileName + ":" + QString::number(lineNumber));
#endif
}

/*!
    \fn void GdbEngine::setTokenBarrier()
    \brief Sets up internal structures to handle a new debugger turn.

    This method is called at the beginnign of all step/next/finish etc.
    debugger functions.
*/

void GdbEngine::setTokenBarrier()
{
    m_oldestAcceptableToken = currentToken();
}

void GdbEngine::setDebugDumpers(bool on)
{
    if (on) {
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        debugMessage("SWITCHING ON DUMPER DEBUGGING");
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        sendCommand("set unwindonsignal off");
        q->breakByFunction("qDumpObjectData440");
        //updateLocals();
    } else {
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        debugMessage("SWITCHING OFF DUMPER DEBUGGING");
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        sendCommand("set unwindonsignal on");
    }
}


//////////////////////////////////////////////////////////////////////
//
// Breakpoint specific stuff
//
//////////////////////////////////////////////////////////////////////

void GdbEngine::breakpointDataFromOutput(BreakpointData *data, const GdbMi &bkpt)
{
    if (!bkpt.isValid())
        return;
    if (!data)
        return;
    data->pending = false;
    data->bpMultiple = false;
    data->bpCondition.clear();
    QStringList files;
    foreach (const GdbMi &child, bkpt.children()) {
        if (child.hasName("number")) {
            data->bpNumber = child.data();
        } else if (child.hasName("func")) {
            data->bpFuncName = child.data();
        } else if (child.hasName("addr")) {
            // <MULTIPLE> happens in constructors. In this case there are
            // _two_ fields named "addr" in the response. On Linux that is...
            if (child.data() == "<MULTIPLE>")
                data->bpMultiple = true;
            else
                data->bpAddress = child.data();
        } else if (child.hasName("file")) {
            files.append(child.data());
        } else if (child.hasName("fullname")) {
            QString fullName = child.data();
            #ifdef Q_OS_WIN
            fullName = QDir::cleanPath(fullName);
            #endif
            files.prepend(fullName);
        } else if (child.hasName("line")) {
            data->bpLineNumber = child.data();
            if (child.data().toInt())
                data->markerLineNumber = child.data().toInt();
        } else if (child.hasName("cond")) {
            data->bpCondition = child.data();
            // gdb 6.3 likes to "rewrite" conditions. Just accept that fact.
            if (data->bpCondition != data->condition && data->conditionsMatch())
                data->condition = data->bpCondition;
        }
        else if (child.hasName("pending")) {
            data->pending = true;
            int pos = child.data().lastIndexOf(':');
            if (pos > 0) {
                data->bpLineNumber = child.data().mid(pos + 1);
                data->markerLineNumber = child.data().mid(pos + 1).toInt();
                files.prepend(child.data().left(pos));
            } else {
                files.prepend(child.data());
            }
        }
    }
    // This field is not present.  Contents needs to be parsed from
    // the plain "ignore" response.
    //else if (child.hasName("ignore"))
    //    data->bpIgnoreCount = child.data();

    QString name = fullName(files);
    if (data->bpFileName.isEmpty())
        data->bpFileName = name;
    if (data->markerFileName.isEmpty())
        data->markerFileName = name;
}

void GdbEngine::sendInsertBreakpoint(int index)
{
    const BreakpointData *data = qq->breakHandler()->at(index);
    QString where;
    if (data->funcName.isEmpty()) {<