[wasm] Enable wasm frame inspection for debugging

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 "src/base/atomic-utils.h"
 #include "src/macro-assembler.h"
 #include "src/objects.h"
 #include "src/property-descriptor.h"
 #include "src/v8.h"
 
@@ skipping 1281 matching lines @@
       if (RelocInfo::IsWasmMemoryReference(mode) ||
           RelocInfo::IsWasmMemorySizeReference(mode)) {
         it.rinfo()->update_wasm_memory_reference(old_start, new_start, old_size,
                                                  new_size);
       }
     }
   }
   return true;
 }
 
+int GetNumberOfFunctions(JSObject* wasm) {
+  Object* func_names_obj = wasm->GetInternalField(kWasmFunctionNamesArray);
+  // TODO(clemensh): this looks inside an array constructed elsewhere. Refactor.
+  return ByteArray::cast(func_names_obj)->get_int(0);
+}
+
 namespace testing {
 
 int32_t CompileAndRunWasmModule(Isolate* isolate, const byte* module_start,
                                 const byte* module_end, bool asm_js) {
   HandleScope scope(isolate);
   Zone zone(isolate->allocator());
   ErrorThrower thrower(isolate, "CompileAndRunWasmModule");
 
   // Decode the module, but don't verify function bodies, since we'll
   // be compiling them anyway.
@@ skipping 56 matching lines @@
     return static_cast<int32_t>(HeapNumber::cast(*result)->value());
   }
   thrower.Error("WASM.compileRun() failed: Return value should be number");
   return -1;
 }
 
 }  // namespace testing
 }  // namespace wasm
 }  // namespace internal
 }  // namespace v8