[wasm] Implement frame inspection for interpreted frames

src/wasm/wasm-module.cc

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <memory>
 
 #include "src/assembler-inl.h"
 #include "src/base/adapters.h"
 #include "src/base/atomic-utils.h"
 #include "src/code-stubs.h"
@@ skipping 835 matching lines @@
       os << ":";
       os.write(name.name_.start(), name.name_.length());
     }
   } else {
     os << "?";
   }
   return os;
 }
 
 WasmInstanceObject* wasm::GetOwningWasmInstance(Code* code) {
-  DCHECK(code->kind() == Code::WASM_FUNCTION);
   DisallowHeapAllocation no_gc;
+  DCHECK(code->kind() == Code::WASM_FUNCTION ||
+         code->kind() == Code::WASM_INTERPRETER_ENTRY);
   FixedArray* deopt_data = code->deoptimization_data();
   DCHECK_NOT_NULL(deopt_data);
-  DCHECK_EQ(2, deopt_data->length());
+  DCHECK_EQ(code->kind() == Code::WASM_INTERPRETER_ENTRY ? 1 : 2,
+            deopt_data->length());
   Object* weak_link = deopt_data->get(0);
   DCHECK(weak_link->IsWeakCell());
   WeakCell* cell = WeakCell::cast(weak_link);
-  if (!cell->value()) return nullptr;
+  if (cell->cleared()) return nullptr;
   return WasmInstanceObject::cast(cell->value());
 }
 
 int wasm::GetFunctionCodeOffset(Handle<WasmCompiledModule> compiled_module,
                                 int func_index) {
   return GetFunctionOffsetAndLength(compiled_module, func_index).first;
 }
 
 WasmModule::WasmModule(Zone* owned)
     : owned_zone(owned), pending_tasks(new base::Semaphore(0)) {}
@@ skipping 1634 matching lines @@
 
     JSObject::AddProperty(entry, name_string, export_name.ToHandleChecked(),
                           NONE);
     JSObject::AddProperty(entry, kind_string, export_kind, NONE);
 
     storage->set(index, *entry);
   }
 
   return array_object;
 }