[api] Expose FunctionCallbackInfo::NewTarget

src/x64/builtins-x64.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.
 
 #if V8_TARGET_ARCH_X64
 
 #include "src/code-factory.h"
 #include "src/codegen.h"
 #include "src/deoptimizer.h"
 #include "src/full-codegen/full-codegen.h"
@@ skipping 167 matching lines @@
     Label loop, entry;
     __ movp(rcx, rax);
     __ jmp(&entry);
     __ bind(&loop);
     __ Push(Operand(rbx, rcx, times_pointer_size, 0));
     __ bind(&entry);
     __ decp(rcx);
     __ j(greater_equal, &loop);
 
     // Call the function.
     if (is_api_function) {

[Benedikt Meurer, 2016/04/26 04:21:34]

You shouldn't need this if anymore. The InvokeFunction below does exactly this
in case of an API function call.

[adamk, 2016/04/26 18:17:14]

Done.

[Benedikt Meurer, 2016/04/26 18:28:40]

Acknowledged.

       __ movp(rsi, FieldOperand(rdi, JSFunction::kContextOffset));
-      Handle<Code> code =
-          masm->isolate()->builtins()->HandleApiCallConstruct();
+      Handle<Code> code = masm->isolate()->builtins()->HandleApiCall();
       __ Call(code, RelocInfo::CODE_TARGET);
     } else {
       ParameterCount actual(rax);
       __ InvokeFunction(rdi, rdx, actual, CALL_FUNCTION,
                         CheckDebugStepCallWrapper());
     }
 
     // Store offset of return address for deoptimizer.
     if (create_implicit_receiver && !is_api_function) {
       masm->isolate()->heap()->SetConstructStubDeoptPCOffset(masm->pc_offset());
@@ skipping 2730 matching lines @@
   __ ret(0);
 }
 
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X64