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diff --git a/src/wasm-emscripten.h b/src/wasm-emscripten.h
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+/*
+ * Copyright 2016 WebAssembly Community Group participants
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef wasm_emscripten_h
+#define wasm_emscripten_h
+
+#include "wasm.h"
+
+namespace wasm {
+
+namespace emscripten {
+
+void generateMemoryGrowthFunction(Module&);
+
+// Create thunks for use with emscripten Runtime.dynCall. Creates one for each
+// signature in the indirect function table.
+std::vector<Function*> makeDynCallThunks(Module& wasm, std::vector<Name> const& tableSegmentData);
+
+void generateEmscriptenMetadata(std::ostream& o,
+                                Module& wasm,
+                                std::unordered_map<Address, Address> segmentsByAddress,
+                                Address staticBump,
+                                std::vector<Name> const& initializerFunctions);
+
+} // namespace emscripten
+
+} // namespace wasm
+
+#endif // wasm_emscripten_h