receive TOTAL_MEMORY from emscripten in wasm.js

2 files changed, 6 insertions, 4 deletions

diff --git a/src/js/post.js b/src/js/post.js
index 8e57c4a06..97fd2be9d 100644
--- a/src/js/post.js
+++ b/src/js/post.js
@@ -16,14 +16,14 @@
     throw 'TODO: loading in other platforms';
   }
 
+  var theBuffer = Module['buffer'] = new ArrayBuffer(Module['providedTotalMemory'] || 64*1024*1024);
+  wasmJS['providedTotalMemory'] = theBuffer.byteLength;
+
   var temp = wasmJS._malloc(code.length + 1);
   wasmJS.writeAsciiToMemory(code, temp);
   wasmJS._load_asm(temp);
   wasmJS._free(temp);
 
-  // Generate memory XXX TODO get the right size
-  var theBuffer = Module['buffer'] = new ArrayBuffer(Module['providedTotalMemory'] || 64*1024*1024);
-
   // Information for the instance of the module.
   var info = wasmJS['info'] = {
     global: null,
diff --git a/src/wasm-js.cpp b/src/wasm-js.cpp
index 2da076329..0bc551bf8 100644
--- a/src/wasm-js.cpp
+++ b/src/wasm-js.cpp
@@ -52,7 +52,9 @@ extern "C" void EMSCRIPTEN_KEEPALIVE load_asm(char *input) {
   Ref asmjs = builder.parseToplevel(input);
 
   module = new Module();
-  module->memory.initial = module->memory.max = 16*1024*1024; // TODO: receive this from emscripten
+  module->memory.initial = module->memory.max = EM_ASM_INT_V({
+    return Module['providedTotalMemory']; // we receive the size of memory from emscripten
+  });
 
 #if WASM_JS_DEBUG
   std::cerr << "wasming...\n";