[wasm] Test argument passing in the interpreter entry

src/wasm/wasm-objects.h

 // Copyright 2016 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.
 
 #ifndef V8_WASM_OBJECTS_H_
 #define V8_WASM_OBJECTS_H_
 
 #include "src/debug/debug.h"
 #include "src/debug/interface-types.h"
 #include "src/objects.h"
@@ skipping 402 matching lines @@
     kInterpreterHandle,
     kInterpretedFunctions,
     kFieldCount
   };
 
   static Handle<WasmDebugInfo> New(Handle<WasmInstanceObject>);
 
   static bool IsDebugInfo(Object*);
   static WasmDebugInfo* cast(Object*);
 
+  // Set a breakpoint in the given function at the given byte offset within that
+  // function. This will redirect all future calls to this function to the
+  // interpreter and will always pause at the given offset.
   static void SetBreakpoint(Handle<WasmDebugInfo>, int func_index, int offset);
 
+  // Make a function always execute in the interpreter without setting a
+  // breakpoints.
+  static void RedirectToInterpreter(Handle<WasmDebugInfo>, int func_index);
+
   void PrepareStep(StepAction);
 
   void RunInterpreter(int func_index, uint8_t* arg_buffer);
 
   // Get the stack of the wasm interpreter as pairs of <function index, byte
   // offset>. The list is ordered bottom-to-top, i.e. caller before callee.
   std::vector<std::pair<uint32_t, int>> GetInterpretedStack(
       Address frame_pointer);
 
   std::unique_ptr<wasm::InterpretedFrame> GetInterpretedFrame(
       Address frame_pointer, int idx);
 
+  // Returns the number of calls / function frames executed in the interpreter.
+  uint64_t NumInterpretedCalls();
+
   DECLARE_GETTER(wasm_instance, WasmInstanceObject);
 };
 
 class WasmInstanceWrapper : public FixedArray {
  public:
   static Handle<WasmInstanceWrapper> New(Isolate* isolate,
                                          Handle<WasmInstanceObject> instance);
   static WasmInstanceWrapper* cast(Object* fixed_array) {
     SLOW_DCHECK(IsWasmInstanceWrapper(fixed_array));
     return reinterpret_cast<WasmInstanceWrapper*>(fixed_array);
@@ skipping 44 matching lines @@
   };
 };
 
 #undef DECLARE_ACCESSORS
 #undef DECLARE_OPTIONAL_ACCESSORS
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_WASM_OBJECTS_H_