Index: uspace/lib/cpp/include/impl/unordered_map.hpp
===================================================================
--- uspace/lib/cpp/include/impl/unordered_map.hpp	(revision 420ebf20b4d1df46879b8c2c7bf5bc8a9cca9c52)
+++ uspace/lib/cpp/include/impl/unordered_map.hpp	(revision 420ebf20b4d1df46879b8c2c7bf5bc8a9cca9c52)
@@ -0,0 +1,111 @@
+/*
+ * Copyright (c) 2018 Jaroslav Jindrak
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef LIBCPP_UNORDERED_MAP
+#define LIBCPP_UNORDERED_MAP
+
+#include <initializer_list>
+#include <internal/hash_map.hpp>
+#include <functional>
+#include <memory>
+#include <utility>
+
+namespace std
+{
+    /**
+     * 23.5.4, class template unordered_map:
+     */
+
+    template<
+        class Key, class Value
+        class Hash = hash<Key>,
+        class Pred = equal_to<Key>,
+        class Alloc = allocator<pair<const Key, Value>>
+    >
+    class unordered_map;
+
+    /**
+     * 23.5.5, class template unordered_multimap:
+     */
+
+    template<
+        class Key, class Value
+        class Hash = hash<Key>,
+        class Pred = equal_to<Key>,
+        class Alloc = allocator<pair<const Key, Value>>
+    >
+    class unordered_multimap;
+
+    template<class Key, class Value, class Hash, class Pred, class Alloc>
+    void swap(unordered_map<Key, Value, Hash, Pred, Alloc>& lhs,
+              unordered_map<Key, Value, Hash, Pred, Alloc>& rhs)
+        noexcept(noexcept(lhs.swap(rhs)))
+    {
+        lhs.swap(rhs);
+    }
+
+    template<class Key, class Value, class Hash, class Pred, class Alloc>
+    void swap(unordered_multimap<Key, Value, Hash, Pred, Alloc>& lhs,
+              unordered_multimap<Key, Value, Hash, Pred, Alloc>& rhs)
+        noexcept(noexcept(lhs.swap(rhs)))
+    {
+        lhs.swap(rhs);
+    }
+
+    template<class Key, class Value, class Hash, class Pred, class Alloc>
+    bool operator==(unordered_map<Key, Value, Hash, Pred, Alloc>& lhs,
+                    unordered_map<Key, Value, Hash, Pred, Alloc>& rhs)
+    {
+        // TODO: implement
+        return false;
+    }
+
+    template<class Key, class Value, class Hash, class Pred, class Alloc>
+    bool operator!=(unordered_map<Key, Value, Hash, Pred, Alloc>& lhs,
+                    unordered_map<Key, Value, Hash, Pred, Alloc>& rhs)
+    {
+        return !(lhs == rhs);
+    }
+
+    template<class Key, class Value, class Hash, class Pred, class Alloc>
+    bool operator==(unordered_multimap<Key, Value, Hash, Pred, Alloc>& lhs,
+                    unordered_multimap<Key, Value, Hash, Pred, Alloc>& rhs)
+    {
+        // TODO: implement
+        return false;
+    }
+
+    template<class Key, class Value, class Hash, class Pred, class Alloc>
+    bool operator!=(unordered_multimap<Key, Value, Hash, Pred, Alloc>& lhs,
+                    unordered_multimap<Key, Value, Hash, Pred, Alloc>& rhs)
+    {
+        return !(lhs == rhs);
+    }
+}
+
+#endif
Index: uspace/lib/cpp/include/unordered_map
===================================================================
--- uspace/lib/cpp/include/unordered_map	(revision 420ebf20b4d1df46879b8c2c7bf5bc8a9cca9c52)
+++ uspace/lib/cpp/include/unordered_map	(revision 420ebf20b4d1df46879b8c2c7bf5bc8a9cca9c52)
@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2018 Jaroslav Jindrak
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <impl/unordered_map.hpp>