[wasm] Implement frame inspection for interpreted frames

src/frames.cc

 // Copyright 2012 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 "src/frames.h"
 
 #include <memory>
 #include <sstream>
 
 #include "src/base/bits.h"
@@ skipping 1734 matching lines @@
   return table->LookupReturn(pc_offset);
 }
 
 void WasmInterpreterEntryFrame::Iterate(ObjectVisitor* v) const {
   IterateCompiledFrame(v);
 }
 
 void WasmInterpreterEntryFrame::Print(StringStream* accumulator, PrintMode mode,
                                       int index) const {
   PrintIndex(accumulator, mode, index);
-  accumulator->Add("WASM TO INTERPRETER [");
+  accumulator->Add("WASM INTERPRETER ENTRY [");
   Script* script = this->script();
   accumulator->PrintName(script->name());
   accumulator->Add("]");
   if (mode != OVERVIEW) accumulator->Add("\n");
 }
 
 void WasmInterpreterEntryFrame::Summarize(List<FrameSummary>* functions,
                                           FrameSummary::Mode mode) const {
-  // TODO(clemensh): Implement this.
-  UNIMPLEMENTED();
+  Handle<WasmInstanceObject> instance(wasm_instance(), isolate());
+  Handle<WasmDebugInfo> debug_info =
+      WasmInstanceObject::GetOrCreateDebugInfo(instance);
+  std::vector<std::pair<uint32_t, int>> interpreted_stack =
+      WasmDebugInfo::GetInterpretedStack(debug_info, fp());
+
+  for (auto& e : interpreted_stack) {
+    FrameSummary::WasmInterpretedFrameSummary summary(isolate(), instance,
+                                                      e.first, e.second);
+    functions->Add(summary);
+  }
 }
 
 Code* WasmInterpreterEntryFrame::unchecked_code() const {
   return isolate()->FindCodeObject(pc());
 }
 
 WasmInstanceObject* WasmInterpreterEntryFrame::wasm_instance() const {
   WasmInstanceObject* ret = wasm::GetOwningWasmInstance(LookupCode());
   // This is a live stack frame, there must be a live wasm instance available.
   DCHECK_NOT_NULL(ret);
@@ skipping 443 matching lines @@
   for (StackFrameIterator it(isolate); !it.done(); it.Advance()) {
     StackFrame* frame = AllocateFrameCopy(it.frame(), zone);
     list.Add(frame, zone);
   }
   return list.ToVector();
 }
 
 
 }  // namespace internal
 }  // namespace v8