elf-provider.h

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */
 
#ifndef BACKENDS_PLUGINS_ELF_PROVIDER_H
#define BACKENDS_PLUGINS_ELF_PROVIDER_H
 
#include "common/scummsys.h"
 
#if defined(DYNAMIC_MODULES) && defined(USE_ELF_LOADER)
 
#include "backends/plugins/elf/elf-loader.h"
 
#include "common/fs.h"
 
class ELFPlugin : public DynamicPlugin {
protected:
    typedef const char *(*CharFunc)();
 
    DLObject *_dlHandle;
    VoidFunc _finalizeFunc;
 
    virtual VoidFunc findSymbol(const char *symbol);
 
public:
    ELFPlugin(const Common::Path &filename) :
        DynamicPlugin(filename),
        _dlHandle(0),
        _finalizeFunc(0) {
    }
 
    virtual ~ELFPlugin() {
        if (_dlHandle)
            unloadPlugin();
    }
 
    virtual DLObject *makeDLObject() = 0;
 
    virtual bool loadPlugin();
    virtual void unloadPlugin();
    void trackSize();
};
 
template<class T>
class TemplatedELFPlugin : public ELFPlugin {
public:
    TemplatedELFPlugin(const Common::Path &filename) :
        ELFPlugin(filename) {
    }
 
    virtual DLObject *makeDLObject() {
        return new T();
    }
};
 
 
class ELFPluginProvider : public FilePluginProvider {
protected:
    virtual Plugin *createPlugin(const Common::FSNode &node) const = 0;
    virtual PluginList getPlugins();
 
    bool isPluginFilename(const Common::FSNode &node) const;
};
 
#endif // defined(DYNAMIC_MODULES) && defined(USE_ELF_LOADER)
 
#endif /* BACKENDS_PLUGINS_ELF_PROVIDER_H */