diff options
Diffstat (limited to 'backends/plugins/elf-provider.cpp')
| -rw-r--r-- | backends/plugins/elf-provider.cpp | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/backends/plugins/elf-provider.cpp b/backends/plugins/elf-provider.cpp index 08ef7899d2..43f999b461 100644 --- a/backends/plugins/elf-provider.cpp +++ b/backends/plugins/elf-provider.cpp @@ -31,6 +31,33 @@ #if defined(DYNAMIC_MODULES) && defined(ELF_LOADER_TARGET) +void (* ELFPlugin::findSymbol(const char *symbol))() { + void *func; + bool handleNull; + if (_dlHandle == NULL) { + func = NULL; + handleNull = true; + } else { + func = _dlHandle->symbol(symbol); + } + if (!func) { + if (handleNull) { + warning("Failed loading symbol '%s' from plugin '%s' (Handle is NULL)", symbol, _filename.c_str()); + } else { + warning("Failed loading symbol '%s' from plugin '%s'", symbol, _filename.c_str()); + } + } + + // 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; +} + bool ELFPlugin::loadPlugin() { assert(!_dlHandle); DLObject *obj = new DLObject(NULL); |