I was using a open source project to look at various imports in a dll and it always provided mangled function names. Here is some code I have which takes a mangled symbol and try to demangle it. For now this is MS specific.
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| typedef int (WINAPI* UnDecorateSymbolNameFn_t) (LPCSTR, LPSTR, DWORD, DWORD);
static UnDecorateSymbolNameFn_t getUnDecorateSymbolNameFn()
{
static UnDecorateSymbolNameFn_t UnDecorateSymbolName = nullptr;
HMODULE module = LoadLibraryA("dbghelp.dll");
if (module != nullptr)
UnDecorateSymbolName = (UnDecorateSymbolNameFn_t)GetProcAddress(module, "UnDecorateSymbolName");
if (UnDecorateSymbolName == nullptr)
{
module = LoadLibraryA("imagehlp.dll");
if (module != nullptr)
UnDecorateSymbolName = (UnDecorateSymbolNameFn_t)GetProcAddress(module, "UnDecorateSymbolName");
}
return UnDecorateSymbolName;
}
static std::string getUndecoratedFunctionName(const std::string& mangledName)
{
UnDecorateSymbolNameFn_t unDecFn = getUnDecorateSymbolNameFn();
if (unDecFn != nullptr)
{
constexpr int BUFFER_LEN = 4096;
char buffer[BUFFER_LEN];
int errCode = unDecFn(mangledName.c_str(), buffer, BUFFER_LEN,
UNDNAME_COMPLETE | UNDNAME_32_BIT_DECODE | UNDNAME_NO_FUNCTION_RETURNS |
UNDNAME_NO_ACCESS_SPECIFIERS | UNDNAME_NO_MEMBER_TYPE | UNDNAME_NO_MS_KEYWORDS);
if (errCode != 0)
return std::string(buffer);
}
return mangledName;
}
|