[wasm] Add stack checks to loops.

src/wasm/wasm-module.h

Index: src/wasm/wasm-module.h
diff --git a/src/wasm/wasm-module.h b/src/wasm/wasm-module.h
index 466b15ba6735eb0e89a796dc36fe9248643e9eef..60eeb8afe0d71a9ab74839559715cb109a34079d 100644
--- a/src/wasm/wasm-module.h
+++ b/src/wasm/wasm-module.h
@@ -50,6 +50,18 @@ enum WasmSectionCode {
   kNameSectionCode = 12,     // Name section (encoded as a string)
 };
 
+// Internal constants for the layout of the module object.
+enum WasmInstanceObjectFields {

[titzer, 2016/10/11 18:48:54]

Not sure why these internal fields need to be exposed now.

[ahaas, 2016/10/12 18:03:58]

I do not expose them anymore. Instead I make GetInstanceMemory in wasm-module.h
accessible. =

+  kWasmCompiledModule = 0,
+  kWasmModuleFunctionTable,
+  kWasmModuleCodeTable,
+  kWasmMemObject,
+  kWasmMemArrayBuffer,
+  kWasmGlobalsArrayBuffer,
+  kWasmDebugInfo,
+  kWasmModuleInternalFieldCount
+};
+
 inline bool IsValidSectionCode(uint8_t byte) {
   return kTypeSectionCode <= byte && byte <= kDataSectionCode;
 }