159 lines
3.9 KiB
C++
159 lines
3.9 KiB
C++
// Copyright (C) 2003-2008 Dolphin Project.
|
|
|
|
// 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, version 2.0.
|
|
|
|
// 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 2.0 for more details.
|
|
|
|
// A copy of the GPL 2.0 should have been included with the program.
|
|
// If not, see http://www.gnu.org/licenses/
|
|
|
|
// Official SVN repository and contact information can be found at
|
|
// http://code.google.com/p/dolphin-emu/
|
|
|
|
// All plugins from Core > Plugins are loaded and unloaded with this class when
|
|
// Dolphin is started and stopped.
|
|
|
|
#include <string.h> // System
|
|
#ifdef _WIN32
|
|
#include <windows.h>
|
|
#else
|
|
#include <dlfcn.h>
|
|
#include <stdio.h>
|
|
#endif
|
|
|
|
#include "Common.h" // Local
|
|
#include "FileUtil.h"
|
|
#include "StringUtil.h"
|
|
#include "DynamicLibrary.h"
|
|
#include "ConsoleWindow.h"
|
|
|
|
DynamicLibrary::DynamicLibrary()
|
|
{
|
|
library = 0;
|
|
}
|
|
|
|
std::string GetLastErrorAsString()
|
|
{
|
|
#ifdef _WIN32
|
|
LPVOID lpMsgBuf = 0;
|
|
DWORD error = GetLastError();
|
|
FormatMessage(
|
|
FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
|
|
NULL,
|
|
error,
|
|
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
|
|
(LPTSTR) &lpMsgBuf,
|
|
0, NULL);
|
|
std::string s;
|
|
if (lpMsgBuf)
|
|
{
|
|
s = ((char *)lpMsgBuf);
|
|
LocalFree(lpMsgBuf);
|
|
} else {
|
|
s = StringFromFormat("(unknown error %08x)", error);
|
|
}
|
|
return s;
|
|
#else
|
|
static std::string errstr;
|
|
char *tmp = dlerror();
|
|
if (tmp)
|
|
errstr = tmp;
|
|
|
|
return errstr;
|
|
#endif
|
|
}
|
|
|
|
/* Function: Loading means loading the dll with LoadLibrary() to get an
|
|
instance to the dll. This is done when Dolphin is started to determine
|
|
which dlls are good, and before opening the Config and Debugging windows
|
|
from Plugin.cpp and before opening the dll for running the emulation in
|
|
Video_...cpp in Core. Since this is fairly slow, TODO: think about
|
|
implementing some sort of cache.
|
|
|
|
Called from: The Dolphin Core */
|
|
int DynamicLibrary::Load(const char* filename)
|
|
{
|
|
if (!filename || strlen(filename) == 0)
|
|
{
|
|
LOG(MASTER_LOG, "Missing filename of dynamic library to load");
|
|
PanicAlert("Missing filename of dynamic library to load");
|
|
return 0;
|
|
}
|
|
if (IsLoaded())
|
|
{
|
|
LOG(MASTER_LOG, "Trying to load already loaded library %s", filename);
|
|
return 2;
|
|
}
|
|
|
|
Console::Print("LoadLibrary: %s", filename);
|
|
#ifdef _WIN32
|
|
library = LoadLibrary(filename);
|
|
#else
|
|
library = dlopen(filename, RTLD_NOW | RTLD_LOCAL);
|
|
#endif
|
|
Console::Print(" %p\n", library);
|
|
if (!library)
|
|
{
|
|
LOG(MASTER_LOG, "Error loading DLL %s: %s", filename, GetLastErrorAsString().c_str());
|
|
PanicAlert("Error loading DLL %s: %s\n", filename, GetLastErrorAsString().c_str());
|
|
return 0;
|
|
}
|
|
|
|
library_file = filename;
|
|
return 1;
|
|
}
|
|
|
|
int DynamicLibrary::Unload()
|
|
{
|
|
int retval;
|
|
if (!IsLoaded())
|
|
{
|
|
PanicAlert("Error unloading DLL %s: not loaded", library_file.c_str());
|
|
return 0;
|
|
}
|
|
|
|
Console::Print("FreeLibrary: %s %p\n", library_file.c_str(), library);
|
|
#ifdef _WIN32
|
|
retval = FreeLibrary(library);
|
|
#else
|
|
retval = dlclose(library) ? 0 : 1;
|
|
#endif
|
|
|
|
if (!retval)
|
|
{
|
|
PanicAlert("Error unloading DLL %s: %s", library_file.c_str(),
|
|
GetLastErrorAsString().c_str());
|
|
}
|
|
library = 0;
|
|
return retval;
|
|
}
|
|
|
|
void* DynamicLibrary::Get(const char* funcname) const
|
|
{
|
|
void* retval;
|
|
if (!library)
|
|
{
|
|
PanicAlert("Can't find function %s - Library not loaded.");
|
|
return NULL;
|
|
}
|
|
|
|
#ifdef _WIN32
|
|
retval = GetProcAddress(library, funcname);
|
|
#else
|
|
retval = dlsym(library, funcname);
|
|
#endif
|
|
|
|
if (!retval)
|
|
{
|
|
LOG(MASTER_LOG, "Symbol %s missing in %s (error: %s)\n", funcname, library_file.c_str(), GetLastErrorAsString().c_str());
|
|
PanicAlert("Symbol %s missing in %s (error: %s)\n", funcname, library_file.c_str(), GetLastErrorAsString().c_str());
|
|
}
|
|
|
|
return retval;
|
|
}
|