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/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
****************************************************************************/
#include "coregdbadapter.h"
#include "debuggerstartparameters.h"
#include "debuggercore.h"
#include "debuggeractions.h"
#include "debuggerstringutils.h"
#include "gdbmi.h"
#include "gdbengine.h"
#include <utils/consoleprocess.h>
#include <utils/elfreader.h>
#include <utils/qtcassert.h>
#include <utils/qtcprocess.h>
#include <QDir>
#include <QFileInfo>
#include <QMessageBox>
#include <QProcess>
#include <QTemporaryFile>
using namespace Utils;
namespace Debugger {
namespace Internal {
#define CB(callback) \
static_cast<GdbEngine::GdbCommandCallback>(&GdbCoreEngine::callback), \
STRINGIFY(callback)
///////////////////////////////////////////////////////////////////////
//
// CoreGdbAdapter
//
///////////////////////////////////////////////////////////////////////
GdbCoreEngine::GdbCoreEngine(const DebuggerStartParameters &startParameters)
: GdbEngine(startParameters)
{}
GdbCoreEngine::~GdbCoreEngine()
{
if (false && !m_tempCoreName.isEmpty()) {
QFile tmpFile(m_tempCoreName);
tmpFile.remove();
}
}
void GdbCoreEngine::setupEngine()
{
QTC_ASSERT(state() == EngineSetupRequested, qDebug() << state());
showMessage(_("TRYING TO START ADAPTER"));
const DebuggerStartParameters &sp = startParameters();
m_executable = sp.executable;
QFileInfo fi(sp.coreFile);
m_coreName = fi.absoluteFilePath();
unpackCoreIfNeeded();
}
QString GdbCoreEngine::readExecutableNameFromCore(bool *isCore)
{
#if 0
ElfReader reader(coreFileName());
return QString::fromLocal8Bit(reader.readCoreName(isCore));
#else
const DebuggerStartParameters &sp = startParameters();
QStringList args;
args.append(QLatin1String("-nx"));
args.append(QLatin1String("-batch"));
args.append(QLatin1String("-c"));
args.append(coreFileName());
QProcess proc;
proc.start(sp.debuggerCommand, args);
if (proc.waitForFinished()) {
QByteArray ba = proc.readAllStandardOutput();
// Core was generated by `/data/dev/creator-2.6/bin/qtcreator'.
// Program terminated with signal 11, Segmentation fault.
int pos1 = ba.indexOf("Core was generated by");
if (pos1 != -1) {
pos1 += 23;
int pos2 = ba.indexOf('\'', pos1);
if (pos2 != -1) {
*isCore = true;
return QString::fromLocal8Bit(ba.mid(pos1, pos2 - pos1));
}
}
}
return QString();
#endif
}
void GdbCoreEngine::continueSetupEngine()
{
if (m_executable.isEmpty()) {
// Read executable from core.
bool isCore = false;
m_executable = readExecutableNameFromCore(&isCore);
if (!isCore) {
showMessageBox(QMessageBox::Warning,
tr("Error Loading Core File"),
tr("The specified file does not appear to be a core file."));
notifyEngineSetupFailed();
return;
}
// Strip off command line arguments. FIXME: make robust.
int idx = m_executable.indexOf(QLatin1Char(' '));
if (idx >= 0)
m_executable.truncate(idx);
if (m_executable.isEmpty()) {
showMessageBox(QMessageBox::Warning,
tr("Error Loading Symbols"),
tr("No executable to load symbols from specified core."));
notifyEngineSetupFailed();
return;
}
}
startGdb();
}
void GdbCoreEngine::setupInferior()
{
QTC_ASSERT(state() == InferiorSetupRequested, qDebug() << state());
// Do that first, otherwise no symbols are loaded.
QFileInfo fi(m_executable);
QByteArray path = fi.absoluteFilePath().toLocal8Bit();
postCommand("-file-exec-and-symbols \"" + path + '"',
CB(handleFileExecAndSymbols));
}
void GdbCoreEngine::handleFileExecAndSymbols(const GdbResponse &response)
{
QTC_ASSERT(state() == InferiorSetupRequested, qDebug() << state());
QString core = coreFileName();
if (response.resultClass == GdbResultDone) {
showMessage(tr("Symbols found."), StatusBar);
postCommand("target core " + core.toLocal8Bit(),
CB(handleTargetCore));
return;
}
QString msg = tr("No symbols found in core file <i>%1</i>.")
.arg(core);
msg += _(" ");
msg += tr("This can be caused by a path length limitation in the "
"core file.");
msg += _(" ");
msg += tr("Try to specify the binary using the "
"<i>Debug->Start Debugging->Attach to Core</i> dialog.");
notifyInferiorSetupFailed(msg);
}
void GdbCoreEngine::handleTargetCore(const GdbResponse &response)
{
QTC_ASSERT(state() == InferiorSetupRequested, qDebug() << state());
if (response.resultClass == GdbResultDone) {
// HACK: The namespace is not accessible in the initial run.
loadPythonDumpers();
showMessage(tr("Attached to core."), StatusBar);
handleInferiorPrepared();
// Due to the auto-solib-add off setting, we don't have any
// symbols yet. Load them in order of importance.
reloadStack(true);
reloadModulesInternal();
postCommand("p 5", CB(handleRoundTrip));
return;
}
QString msg = tr("Attach to core \"%1\" failed:\n")
.arg(startParameters().coreFile)
+ QString::fromLocal8Bit(response.data.findChild("msg").data());
notifyInferiorSetupFailed(msg);
}
void GdbCoreEngine::handleRoundTrip(const GdbResponse &response)
{
Q_UNUSED(response);
loadSymbolsForStack();
QTimer::singleShot(1000, this, SLOT(loadAllSymbols()));
}
void GdbCoreEngine::runEngine()
{
QTC_ASSERT(state() == EngineRunRequested, qDebug() << state());
notifyInferiorUnrunnable();
updateAll();
}
void GdbCoreEngine::interruptInferior()
{
// A core never runs, so this cannot be called.
QTC_CHECK(false);
}
void GdbCoreEngine::shutdownEngine()
{
notifyAdapterShutdownOk();
}
void GdbCoreEngine::unpackCoreIfNeeded()
{
if (!m_coreName.endsWith(QLatin1String(".lzo"))) {
continueSetupEngine();
return;
}
{
QString pattern = QDir::tempPath() + QLatin1String("/tmpcore-XXXXXX");
QTemporaryFile tmp(pattern, this);
tmp.open();
m_tempCoreName = tmp.fileName();
}
QProcess *process = new QProcess(this);
process->setWorkingDirectory(QDir::tempPath());
QStringList arguments;
arguments << QLatin1String("-o") << m_tempCoreName << QLatin1String("-x") << m_coreName;
process->start(QLatin1String("/usr/bin/lzop"), arguments);
connect(process, SIGNAL(finished(int)), SLOT(continueSetupEngine()));
}
QString GdbCoreEngine::coreFileName() const
{
return m_tempCoreName.isEmpty() ? m_coreName : m_tempCoreName;
}
} // namespace Internal
} // namespace Debugger
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