/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** 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, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 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 the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

// This is essentially copied from Qt 5's
// qtbase/src/corelib/plugin/qelfparser_p.{h,cpp}

#ifndef UTILS_ELFREADER_H
#define UTILS_ELFREADER_H

#include "utils_global.h"

#include <qendian.h>
#include <qstring.h>

namespace Utils {

typedef quint16  qelfhalf_t;
typedef quint32  qelfword_t;
typedef quintptr qelfoff_t;
typedef quintptr qelfaddr_t;

class QTCREATOR_UTILS_EXPORT ElfReader
{
public:
    explicit ElfReader(const QString &binary);

    struct ElfSectionHeader
    {
        qelfword_t name;
        qelfword_t type;
        qelfoff_t  offset;
        qelfoff_t  size;
    };

    enum ElfEndian { ElfLittleEndian = 0, ElfBigEndian = 1 };
    QList<QByteArray> sectionNames();
    QString errorString() const { return m_errorString; }

private:
    enum Result { Ok, NotElf, Corrupt };

    const char *parseSectionHeader(const char *s, ElfSectionHeader *sh);
    Result parse(const char *dataStart, quint64 fdlen, QList<QByteArray> *sectionNames);

    QString m_binary;
    QString m_errorString;
    ElfEndian m_endian;
};

} // namespace Utils

#endif // UTILS_ELFREADER_H