gdbengine.cpp 136 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"
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#include "sourcefileswindow.h"
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#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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    GdbAttached,
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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,
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    GdbTemporaryContinue,
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    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;
}


///////////////////////////////////////////////////////////////////////
//
// 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(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;
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    m_gdbBuildVersion = -1;
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    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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    m_commandsToRunOnTemporaryBreak.clear();
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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 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

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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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void GdbEngine::handleResponse(const QByteArray &buff)
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{
    static QTime lastTime;

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

    lastTime = QTime::currentTime();

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    if (buff.isEmpty() || buff == "(gdb) ")
        return;

    const char *from = buff.constData();
    const char *to = from + buff.size();
    const char *inner;

    int token = -1;
    // token is a sequence of numbers
    for (inner = from; inner != to; ++inner)
        if (*inner < '0' || *inner > '9')
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            break;
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    if (from != inner) {
        token = QByteArray(from, inner - from).toInt();
        from = inner;
        //qDebug() << "found token " << token;
    }
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    // 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))
                    break;
                asyncClass += *from;
            }
            //qDebug() << "ASYNCCLASS" << asyncClass;
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            GdbMi record;
            while (from != to) {
                if (*from != ',') {
                    qDebug() << "MALFORMED ASYNC OUTPUT" << from;
                    return;
                }
                ++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;
                }
            }
            if (asyncClass == "stopped") {
                handleAsyncOutput(record);
            } else if (asyncClass == "running") {
                // Archer has 'thread-id="all"' here
            #ifdef Q_OS_MAC
            } else if (asyncClass == "shlibs-updated") {
                // MAC announces updated libs
            } else if (asyncClass == "shlibs-added") {
                // MAC announces added libs
                // {shlib-info={num="2", name="libmathCommon.A_debug.dylib",
                // kind="-", dyld-addr="0x7f000", reason="dyld", requested-state="Y",
                // state="Y", path="/usr/lib/system/libmathCommon.A_debug.dylib",
                // description="/usr/lib/system/libmathCommon.A_debug.dylib",
                // loaded_addr="0x7f000", slide="0x7f000", prefix=""}}
            #endif
            } else {
                qDebug() << "IGNORED ASYNC OUTPUT "
                    << asyncClass << record.toString();
            }
            break;
        }
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        case '~': {
            m_pendingConsoleStreamOutput += GdbMi::parseCString(from, to);
            break;
        }
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        case '@': {
            m_pendingTargetStreamOutput += GdbMi::parseCString(from, to);
            break;
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        }

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        case '&': {
            QByteArray data = GdbMi::parseCString(from, to);
            m_pendingLogStreamOutput += data;
            // 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;
        }

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        case '^': {
            GdbResultRecord record;
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            record.token = token;
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            for (inner = from; inner != to; ++inner)
                if (*inner < 'a' || *inner > 'z')
                    break;
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            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;
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            from = inner;
            if (from != to) {
                if (*from != ',') {
                    qDebug() << "MALFORMED RESULT OUTPUT" << from;
                    return;
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                }
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                ++from;
                record.data.parseTuple_helper(from, to);
                record.data.m_type = GdbMi::Tuple;
                record.data.m_name = "data";
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            }
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            //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();

            handleResultRecord(record);
            break;
        }
        default: {
            qDebug() << "UNKNOWN RESPONSE TYPE" << c;
            break;
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        }
    }
}

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

void GdbEngine::readGdbStandardOutput()
{
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    m_inbuffer.append(m_gdbProc.readAllStandardOutput());

    int newstart = 0;
    while (newstart < m_inbuffer.size()) {
        int start = newstart;
        int end = m_inbuffer.indexOf('\n', start);
        if (end < 0) {
            m_inbuffer.remove(0, start);
            return;
        }
        newstart = end + 1;
        if (end == start)
            continue;
        if (m_inbuffer.at(end - 1) == '\r') {
            --end;
            if (end == start)
                continue;
        }
        handleResponse(QByteArray::fromRawData(m_inbuffer.constData() + start, end - start));
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    }
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    m_inbuffer.clear();
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}

void GdbEngine::interruptInferior()
{
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    qq->notifyInferiorStopRequested();
    if (m_gdbProc.state() == QProcess::NotRunning) {
        debugMessage("TRYING TO INTERRUPT INFERIOR WITHOUT RUNNING GDB");
        qq->notifyInferiorExited();
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        return;
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    }
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    if (q->m_attachedPID > 0) {
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        if (!interruptProcess(q->m_attachedPID))
        //    qq->notifyInferiorStopped();
        //else
            debugMessage(QString("CANNOT INTERRUPT %1").arg(q->m_attachedPID));
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        return;
    }

#ifdef Q_OS_MAC
    sendCommand("-exec-interrupt", GdbExecInterrupt);
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    //qq->notifyInferiorStopped();
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#else
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    if (!interruptChildProcess(m_gdbProc.pid()))
    //    qq->notifyInferiorStopped();
    //else
        debugMessage(QString("CANNOT STOP INFERIOR"));
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#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,
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    int type, const QVariant &cookie, StopNeeded needStop)
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{
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    sendCommand(command, type, cookie, needStop, Synchronized);
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}

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

    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.type = type;
    cmd.cookie = cookie;

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    if (needStop && q->status() != DebuggerInferiorStopped
            && q->status() != DebuggerProcessStartingUp) {
        // queue the commands that we cannot send at once
        QTC_ASSERT(q->status() == DebuggerInferiorRunning,
            qDebug() << "STATUS: " << q->status());
        q->showStatusMessage(tr("Stopping temporarily."));
        debugMessage("QUEUING COMMAND " + cmd.command);
        m_commandsToRunOnTemporaryBreak.append(cmd);
        interruptInferior();
    } else if (!command.isEmpty()) {
        ++currentToken();
        m_cookieForToken[currentToken()] = cmd;
        cmd.command = QString::number(currentToken()) + cmd.command;
        if (cmd.command.contains("%1"))
            cmd.command = cmd.command.arg(currentToken());
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        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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    }
}

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);

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    if (record.token < m_oldestAcceptableToken) {
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        //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 GdbAttached:
            handleAttach();
            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:
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            qq->notifyInferiorStopped();
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            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;
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        case GdbTemporaryContinue:
            continueInferior();
            q->showStatusMessage(tr("Continuing after temporary stop."));
            break;
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        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) {
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        QMap<QString, QString> oldShortToFull = m_shortToFullName;
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        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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        if (m_shortToFullName != oldShortToFull)
            qq->sourceFileWindow()->setSourceFiles(m_shortToFullName);
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    }
}

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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
    ;
}

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void GdbEngine::handleAqcuiredInferior()
{
    #if defined(Q_OS_WIN)
    sendCommand("info thread", GdbInfoThreads);
    #endif
    #if defined(Q_OS_LINUX)
    sendCommand("info proc", GdbInfoProc);
    #endif
    #if defined(Q_OS_MAC)
    sendCommand("info pid", GdbInfoProc, QVariant(), NeedsStop);
    #endif
    reloadSourceFiles();
    tryLoadCustomDumpers();

#ifndef Q_OS_MAC
    // 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");
    }
#endif
    // nicer to see a bit of the world we live in
    reloadModules();
    attemptBreakpointSynchronization();
}

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

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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();
        }
        q->showStatusMessage(msg);
        // FIXME: shouldn't this use a statis change?
        debugMessage("CALLING PARENT EXITDEBUGGER");
        q->exitDebugger();
        return;
    }


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    //MAC: bool isFirstStop = data.findChild("bkptno").data() == "1";
    //!MAC: startSymbolName == data.findChild("frame").findChild("func")
    if (m_waitingForFirstBreakpointToBeHit) {
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        // If the executable dies already that early we might get something
        // like stdout:49*stopped,reason="exited",exit-code="0177"
        // This is handled now above.

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        qq->notifyInferiorStopped();
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        m_waitingForFirstBreakpointToBeHit = false;
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        //
        // this will "continue" if done
        m_waitingForBreakpointSynchronizationToContinue = true;
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        //
        // that's the "early stop"
        handleAqcuiredInferior();
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        return;
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    }

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    if (!m_commandsToRunOnTemporaryBreak.isEmpty()) {
        QTC_ASSERT(q->status() == DebuggerInferiorStopRequested, 
            qDebug() << "STATUS: " << q->status())
        qq->notifyInferiorStopped();
        q->showStatusMessage(tr("Temporarily stopped."));
        // FIXME: racy
        foreach (const GdbCookie &cmd, m_commandsToRunOnTemporaryBreak) {
            debugMessage(QString("RUNNING QUEUED COMMAND %1 %2")
                .arg(cmd.command).arg(cmd.type));
            sendCommand(cmd.command, cmd.type, cmd.cookie);
        }
        sendCommand("p temporaryStop", GdbTemporaryContinue);
        m_commandsToRunOnTemporaryBreak.clear();
        q->showStatusMessage(tr("Handling queued commands."));
        return;
    }

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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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    //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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            reloadSourceFiles();
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            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)
{
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    //qDebug () << "VERSION 2:" << response.data.findChild("consolestreamoutput").data();
    //qDebug () << "VERSION:" << response.toString();
    debugMessage("VERSION:" + response.toString());
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    if (response.resultClass == GdbResultDone) {
        m_gdbVersion = 100;
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        m_gdbBuildVersion = -1;
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        QString msg = response.data.findChild("consolestreamoutput").data();
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        QRegExp supported("GNU gdb(.*) (\\d+)\\.(\\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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            m_gdbBuildVersion = supported.cap(7).toInt();
            debugMessage(QString("GDB VERSION: %1").arg(m_gdbVersion));
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        }
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        //qDebug () << "VERSION 3:" << m_gdbVersion << m_gdbBuildVersion;
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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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        if (q->status() != DebuggerInferiorStopped
            && q->status() != DebuggerProcessStartingUp) {
            QTC_ASSERT(q->status() == DebuggerInferiorRunning,
                qDebug() << "STATUS ON EXITDEBUGGER: " << q->status());
            interruptInferior();
        }
        if (q->startMode() == DebuggerManager::AttachExternal)
            sendCommand("detach");
        else
            sendCommand("kill");
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        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: ") + q->settings()->m_gdbCmd + ' ' + gdbArgs.join(" "));
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    m_gdbProc.start(q->settings()->m_gdbCmd, gdbArgs);
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    if (!m_gdbProc.waitForStarted()) {
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        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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    sendCommand("-data-list-register-names", RegisterListNames);
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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);
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    sendCommand("set width 0");
    sendCommand("set height 0");
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    #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() == DebuggerManager::AttachExternal) {
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        sendCommand("attach " + QString::number(q->m_attachedPID), GdbAttached);
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    } else {
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        // StartInternal or StartExternal
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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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        if (!q->m_processArgs.isEmpty())
            sendCommand("-exec-arguments " + q->m_processArgs.join(" "));
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        #ifndef Q_OS_MAC
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        sendCommand("set auto-solib-add off");
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        sendCommand("info target", GdbStart);
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        #else
        // On MacOS, breaking in at the entry point wreaks havoc.
        sendCommand("tbreak main");
        m_waitingForFirstBreakpointToBeHit = true;
        qq->notifyInferiorRunningRequested();
        sendCommand("-exec-run");
        #endif
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    }

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

    return true;
}

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

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void GdbEngine::handleStart(const GdbResultRecord &response)
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{
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#ifdef Q_OS_MAC
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    Q_UNUSED(response);
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#else
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    if (response.resultClass == GdbResultDone) {
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        // [some leading stdout here]
        // stdout:&"        Entry point: 0x80831f0  0x08048134 - 0x08048147 is .interp\n"
        // [some trailing stdout here]
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        QString msg = response.data.findChild("consolestreamoutput").data();
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        QRegExp needle("\\bEntry point: (0x[0-9a-f]+)\\b");
        if (needle.indexIn(msg) != -1) {
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            //debugMessage("STREAM: " + msg + " " + needle.cap(1));
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            sendCommand("tbreak *" + needle.cap(1));
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            m_waitingForFirstBreakpointToBeHit = true;
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            qq->notifyInferiorRunningRequested();
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            sendCommand("-exec-run");
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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("FETCHING START ADDRESS FAILED: " + response.toString());
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    }
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#endif
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}

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