[wasm] prototype for breakpoint support.

src/compiler/wasm-compiler.h

 // 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.
 
 #ifndef V8_COMPILER_WASM_COMPILER_H_
 #define V8_COMPILER_WASM_COMPILER_H_
 
 // Clients of this interface shouldn't depend on lots of compiler internals.
 // Do not include anything from src/compiler here!
 #include "src/compiler.h"
@@ skipping 71 matching lines @@
                                     wasm::FunctionSig* sig,
                                     wasm::WasmName module_name,
                                     wasm::WasmName function_name);
 
 // Wraps a given wasm code object, producing a JSFunction that can be called
 // from JavaScript.
 Handle<JSFunction> CompileJSToWasmWrapper(
     Isolate* isolate, wasm::ModuleEnv* module, Handle<String> name,
     Handle<Code> wasm_code, Handle<JSObject> module_object, uint32_t index);
 
+// Compiles a function which captures the parameters and calls into the wasm
+// interpreter. It's ABI compatible with the real wasm function.
+Handle<Code> CompileWasmToInterpreter(Isolate* isolate, uint32_t func_index,
+                                      wasm::FunctionSig* sig,
+                                      Handle<JSObject> wasm_obj);
+
 // Abstracts details of building TurboFan graph nodes for WASM to separate
 // the WASM decoder from the internal details of TurboFan.
 class WasmTrapHelper;
 class WasmGraphBuilder {
  public:
   WasmGraphBuilder(
       Zone* z, JSGraph* g, wasm::FunctionSig* function_signature,
       compiler::SourcePositionTable* source_position_table = nullptr);
 
   Node** Buffer(size_t count) {
@@ skipping 45 matching lines @@
 
   Node* CallDirect(uint32_t index, Node** args,
                    wasm::WasmCodePosition position);
   Node* CallImport(uint32_t index, Node** args,
                    wasm::WasmCodePosition position);
   Node* CallIndirect(uint32_t index, Node** args,
                      wasm::WasmCodePosition position);
   void BuildJSToWasmWrapper(Handle<Code> wasm_code, wasm::FunctionSig* sig);
   void BuildWasmToJSWrapper(Handle<JSFunction> function,
                             wasm::FunctionSig* sig);
+  void BuildWasmToInterpreter(uint32_t func_index, wasm::FunctionSig* sig,
+                              Handle<JSObject> wasm_obj);
 
   Node* ToJS(Node* node, Node* context, wasm::LocalType type);
   Node* FromJS(Node* node, Node* context, wasm::LocalType type);
   Node* Invert(Node* node);
   Node* FunctionTable();
 
   //-----------------------------------------------------------------------
   // Operations that concern the linear memory.
   //-----------------------------------------------------------------------
   Node* MemSize(uint32_t offset);
@@ skipping 174 matching lines @@
     Node** buf = Buffer(new_count);
     if (buf != buffer) memcpy(buf, buffer, old_count * sizeof(Node*));
     return buf;
   }
 };
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_WASM_COMPILER_H_