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/* 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"
/**
* ELFPlugin
*
* Objects of this class are returned when the PluginManager calls
* getPlugins() on an ELFPluginProvider. An intermediary class for
* dealing with plugin files, ELFPlugin is responsible for creating/destroying
* a DLObject that handles the opening/loading/unloading of the plugin file whose
* path in the target backend's file system is "_filename".
*/
class ELFPlugin : public DynamicPlugin {
protected:
typedef const char *(*CharFunc)();
DLObject *_dlHandle;
void *_dso_handle;
virtual VoidFunc findSymbol(const char *symbol);
public:
ELFPlugin(const Common::Path &filename) :
DynamicPlugin(filename),
_dlHandle(0),
_dso_handle(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 */
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