[wasm] Initial signal handler

src/runtime/runtime.h

Index: src/runtime/runtime.h
diff --git a/src/runtime/runtime.h b/src/runtime/runtime.h
index 7fb64423d4ccf909f929c826fb90d4b84422606e..ad70a43166150c592cd54c7a8c7fcd19d646720f 100644
--- a/src/runtime/runtime.h
+++ b/src/runtime/runtime.h
@@ -944,7 +944,9 @@ namespace internal {
   F(ThrowWasmTrapFloatUnrepresentable, 0, 1) \
   F(ThrowWasmTrapFuncInvalid, 0, 1)          \
   F(ThrowWasmTrapFuncSigMismatch, 0, 1)      \
-  F(WasmRunInterpreter, 3, 1)
+  F(WasmRunInterpreter, 3, 1)                \
+  F(SetThreadInWasm, 0, 1)                   \
+  F(ClearThreadInWasm, 0, 1)
 
 #define FOR_EACH_INTRINSIC_RETURN_PAIR(F) \
   F(LoadLookupSlotForCall, 1, 2)