Function ApplySymbol

view/sharedcache/core/Utility.cpp:68–130

}

void ApplySymbol(Ref<BinaryView> view, Ref<TypeLibrary> typeLib, Ref<Symbol> symbol, Ref<Type> type)
{
	auto symbolAddress = symbol->GetAddress();
	auto symbolName = symbol->GetFullName();

	// Sometimes the symbol will be duplicated, so lets not do this work again.
	if (view->GetSymbolByAddress(symbolAddress))
		return;

	// Define the symbol!
	view->DefineAutoSymbol(symbol);

	// Try and pull a type from a type library to apply at the symbol location.
	// The type library type will take precedence over the passed in type.
	Ref<Type> selectedType = type;
	if (typeLib)
		selectedType = view->ImportTypeLibraryObject(typeLib, {symbolName});

	Ref<Function> func = nullptr;
	if (symbol->GetType() == FunctionSymbol)
	{
		Ref<Platform> targetPlatform = view->GetDefaultPlatform();
		// Make sure to check for already added function from the function table.
		// Unless we have retrieved a type here we don't need to make a new function.
		func = view->GetAnalysisFunction(targetPlatform, symbolAddress);
		if (!func || selectedType)
			func = view->AddFunctionForAnalysis(targetPlatform, symbolAddress, false, selectedType);
	}
	else
	{
		// Other symbol types can just use this, they don't need to worry about linear sweep removing them.
		view->DefineAutoSymbolAndVariableOrFunction(view->GetDefaultPlatform(), symbol, selectedType);
	}

	if (func)
	{
		// objective c type adjustment stuff.
		if (symbolName == "_objc_msgSend")
		{
			func->SetHasVariableArguments(false);
		}
		else if (symbolName.find("_objc_retain_x") != std::string::npos
			|| symbolName.find("_objc_release_x") != std::string::npos)
		{
			auto x = symbolName.rfind('x');
			auto num = symbolName.substr(x + 1);

			std::vector<FunctionParameter> callTypeParams;
			auto cc = view->GetDefaultArchitecture()->GetCallingConventionByName("apple-arm64-objc-fast-arc-" + num);

			if (auto idType = view->GetTypeByName({"id"}))
			{
				callTypeParams.emplace_back("obj", idType, true, Variable());
				auto funcType = Type::FunctionType(idType, cc, callTypeParams);
				func->SetUserType(funcType);
			}
			else
			{