[wasm] Implement frame printing for debug

src/wasm/wasm-objects.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 "src/wasm/wasm-objects.h"
 #include "src/wasm/wasm-module.h"
 
 #define TRACE(...)                                      \
   do {                                                  \
     if (FLAG_trace_wasm_instances) PrintF(__VA_ARGS__); \
@@ skipping 294 matching lines @@
       isolate->factory()->NewFixedArray(PropertyIndices::Count, TENURED);
   // WasmCompiledModule::cast would fail since module bytes are not set yet.
   Handle<WasmCompiledModule> compiled_module(
       reinterpret_cast<WasmCompiledModule*>(*ret), isolate);
   compiled_module->InitId();
   compiled_module->set_module_wrapper(module_wrapper);
   return compiled_module;
 }
 
 wasm::WasmModule* WasmCompiledModule::module() const {
-  return reinterpret_cast<WasmModuleWrapper*>(*module_wrapper())->get();
+  return reinterpret_cast<WasmModuleWrapper*>(ptr_to_module_wrapper())->get();
 }
 
 void WasmCompiledModule::InitId() {
 #if DEBUG
   static uint32_t instance_id_counter = 0;
   set(kID_instance_id, Smi::FromInt(instance_id_counter++));
   TRACE("New compiled module id: %d\n", instance_id());
 #endif
 }
 
@@ skipping 32 matching lines @@
 #endif
 }
 
 uint32_t WasmCompiledModule::mem_size() const {
   return has_memory() ? memory()->byte_length()->Number() : default_mem_size();
 }
 
 uint32_t WasmCompiledModule::default_mem_size() const {
   return min_mem_pages() * WasmModule::kPageSize;
 }
+
+Vector<const uint8_t> WasmCompiledModule::GetRawFunctionName(
+    uint32_t func_index) {
+  DCHECK_GT(module()->functions.size(), func_index);
+  WasmFunction& function = module()->functions[func_index];
+  SeqOneByteString* bytes = ptr_to_module_bytes();
+  DCHECK_GE(static_cast<size_t>(bytes->length()), function.name_offset);
+  DCHECK_GE(static_cast<size_t>(bytes->length() - function.name_offset),
+            function.name_length);
+  return Vector<const uint8_t>(bytes->GetCharsAddress() + function.name_offset,
+                               function.name_length);
+}