[wasm] Initial signal handler

src/objects.cc

Index: src/objects.cc
diff --git a/src/objects.cc b/src/objects.cc
index 4e67e0f2438a5f599945c4fc1fd3d03f72305b49..e408b290d6a65ea3b8383e1a983d78de57619d70 100644
--- a/src/objects.cc
+++ b/src/objects.cc
@@ -13829,6 +13829,12 @@ void Code::InvalidateEmbeddedObjects() {
 
 
 void Code::Relocate(intptr_t delta) {
+  if (trap_handler::UseTrapHandler() && is_wasm_code()) {
+    const int index = trap_handler_index()->value();
+    if (index >= 0) {
+      trap_handler::UpdateHandlerDataCodePointer(index, instruction_start());
+    }
+  }
   for (RelocIterator it(this, RelocInfo::kApplyMask); !it.done(); it.next()) {
     it.rinfo()->apply(delta);
   }