From b704abdd75c3b6a031626d23e2bd22b8cdc8b2b5 Mon Sep 17 00:00:00 2001
From: chriseth <chris@ethereum.org>
Date: Wed, 19 Jun 2019 18:17:50 +0200
Subject: [PATCH] Some eWasm boilerplate code.

---
 libyul/backends/wasm/EWasmToText.cpp | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/libyul/backends/wasm/EWasmToText.cpp b/libyul/backends/wasm/EWasmToText.cpp
index a0d552d11..4e2bf5c2b 100644
--- a/libyul/backends/wasm/EWasmToText.cpp
+++ b/libyul/backends/wasm/EWasmToText.cpp
@@ -34,9 +34,18 @@ string EWasmToText::run(
 	vector<wasm::FunctionDefinition> const& _functions
 )
 {
-	string ret = "(module\n\n";
+	string ret = "(module\n";
+	// TODO Add all the interface functions:
+	// ret += "    (import \"ethereum\" \"getBalance\"  (func $getBalance (param i32 i32)))\n";
+
+	// allocate one 64k page of memory and make it available to the Ethereum client
+	ret += "    (memory $memory (export \"memory\") 1)\n";
+	// export the main function
+	ret += "    (export \"main\" (func $main))\n";
+
 	for (auto const& g: _globals)
 		ret += "    (global $" + g.variableName + " (mut i64) (i64.const 0))\n";
+	ret += "\n";
 	for (auto const& f: _functions)
 		ret += transform(f) + "\n";
 	return move(ret) + ")\n";