1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
|
/* 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 2
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*
*/
#if defined(DYNAMIC_MODULES) && defined(GP2XWIZ)
#include "backends/plugins/gp2xwiz/gp2xwiz-provider.h"
#include "backends/plugins/dynamic-plugin.h"
#include "common/fs.h"
#include "backends/platform/gp2xwiz/gp2xwiz-loader.h"
class GP2XWIZPlugin : public DynamicPlugin {
protected:
void *_dlHandle;
Common::String _filename;
virtual VoidFunc findSymbol(const char *symbol) {
void *func = dlsym(_dlHandle, symbol);
if (!func)
warning("Failed loading symbol '%s' from plugin '%s' (%s)", symbol, _filename.c_str(), dlerror());
// FIXME HACK: This is a HACK to circumvent a clash between the ISO C++
// standard and POSIX: ISO C++ disallows casting between function pointers
// and data pointers, but dlsym always returns a void pointer. For details,
// see e.g. <http://www.trilithium.com/johan/2004/12/problem-with-dlsym/>.
assert(sizeof(VoidFunc) == sizeof(func));
VoidFunc tmp;
memcpy(&tmp, &func, sizeof(VoidFunc));
return tmp;
}
public:
GP2XWIZPlugin(const Common::String &filename)
: _dlHandle(0), _filename(filename) {}
~GP2XWIZPlugin() {
if (_dlHandle) unloadPlugin();
}
bool loadPlugin() {
assert(!_dlHandle);
_dlHandle = dlopen(_filename.c_str(), RTLD_LAZY);
if (!_dlHandle) {
warning("Failed loading plugin '%s' (%s)", _filename.c_str(), dlerror());
return false;
}
bool ret = DynamicPlugin::loadPlugin();
if (ret)
dlforgetsyms(_dlHandle);
return ret;
}
void unloadPlugin() {
DynamicPlugin::unloadPlugin();
if (_dlHandle) {
if (dlclose(_dlHandle) != 0)
warning("Failed unloading plugin '%s' (%s)", _filename.c_str(), dlerror());
_dlHandle = 0;
}
}
};
Plugin* GP2XWIZPluginProvider::createPlugin(const Common::FSNode &node) const {
return new GP2XWIZPlugin(node.getPath());
}
bool GP2XWIZPluginProvider::isPluginFilename(const Common::FSNode &node) const {
// Check the plugin suffix
Common::String filename = node.getName();
printf("Testing name %s", filename.c_str());
if (!filename.hasSuffix(".PLG") && !filename.hasSuffix(".plg") && !filename.hasSuffix(".PLUGIN") && !filename.hasSuffix(".plugin")) {
printf(" fail.\n");
return false;
}
printf(" success!\n");
return true;
}
#endif // defined(DYNAMIC_MODULES) && defined(GP2XWIZ)
|