[api] Expose FunctionCallbackInfo::NewTarget

src/arm64/code-stubs-arm64.cc

 // Copyright 2013 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_ARM64
 
 #include "src/code-stubs.h"
 #include "src/api-arguments.h"
 #include "src/bootstrapper.h"
 #include "src/codegen.h"
@@ skipping 5784 matching lines @@
 
   typedef FunctionCallbackArguments FCA;
 
   STATIC_ASSERT(FCA::kContextSaveIndex == 6);
   STATIC_ASSERT(FCA::kCalleeIndex == 5);
   STATIC_ASSERT(FCA::kDataIndex == 4);
   STATIC_ASSERT(FCA::kReturnValueOffset == 3);
   STATIC_ASSERT(FCA::kReturnValueDefaultValueIndex == 2);
   STATIC_ASSERT(FCA::kIsolateIndex == 1);
   STATIC_ASSERT(FCA::kHolderIndex == 0);
-  STATIC_ASSERT(FCA::kArgsLength == 7);
+  STATIC_ASSERT(FCA::kNewTargetIndex == 7);
+  STATIC_ASSERT(FCA::kArgsLength == 8);
 
-  // FunctionCallbackArguments: context, callee and call data.
+  // FunctionCallbackArguments
+
+  // new target
+  __ PushRoot(Heap::kUndefinedValueRootIndex);
+
+  // context, callee and call data.
   __ Push(context, callee, call_data);
 
   if (!is_lazy()) {
     // Load context from callee
     __ Ldr(context, FieldMemOperand(callee, JSFunction::kContextOffset));
   }
 
   if (!call_data_undefined()) {
     __ LoadRoot(call_data, Heap::kUndefinedValueRootIndex);
   }
   Register isolate_reg = x5;
   __ Mov(isolate_reg, ExternalReference::isolate_address(masm->isolate()));
 
   // FunctionCallbackArguments:
   //    return value, return value default, isolate, holder.
   __ Push(call_data, call_data, isolate_reg, holder);
 
   // Prepare arguments.
   Register args = x6;
   __ Mov(args, masm->StackPointer());
 
   // Allocate the v8::Arguments structure in the arguments' space, since it's
   // not controlled by GC.
-  const int kApiStackSpace = 4;
+  const int kApiStackSpace = 3;
 
   // Allocate space for CallApiFunctionAndReturn can store some scratch
   // registeres on the stack.
   const int kCallApiFunctionSpillSpace = 4;
 
   FrameScope frame_scope(masm, StackFrame::MANUAL);
   __ EnterExitFrame(false, x10, kApiStackSpace + kCallApiFunctionSpillSpace);
 
   DCHECK(!AreAliased(x0, api_function_address));
   // x0 = FunctionCallbackInfo&
   // Arguments is after the return address.
   __ Add(x0, masm->StackPointer(), 1 * kPointerSize);
   // FunctionCallbackInfo::implicit_args_ and FunctionCallbackInfo::values_
   __ Add(x10, args, Operand((FCA::kArgsLength - 1 + argc()) * kPointerSize));
   __ Stp(args, x10, MemOperand(x0, 0 * kPointerSize));
-  // FunctionCallbackInfo::length_ = argc and
-  // FunctionCallbackInfo::is_construct_call = 0
+  // FunctionCallbackInfo::length_ = argc
   __ Mov(x10, argc());
-  __ Stp(x10, xzr, MemOperand(x0, 2 * kPointerSize));
+  __ Str(x10, MemOperand(x0, 2 * kPointerSize));
 
   ExternalReference thunk_ref =
       ExternalReference::invoke_function_callback(masm->isolate());
 
   AllowExternalCallThatCantCauseGC scope(masm);
   MemOperand context_restore_operand(
       fp, (2 + FCA::kContextSaveIndex) * kPointerSize);
   // Stores return the first js argument
   int return_value_offset = 0;
   if (is_store()) {
     return_value_offset = 2 + FCA::kArgsLength;
   } else {
     return_value_offset = 2 + FCA::kReturnValueOffset;
   }
   MemOperand return_value_operand(fp, return_value_offset * kPointerSize);
   int stack_space = 0;
-  MemOperand is_construct_call_operand =
-      MemOperand(masm->StackPointer(), 4 * kPointerSize);
-  MemOperand* stack_space_operand = &is_construct_call_operand;
+  MemOperand length_operand =
+      MemOperand(masm->StackPointer(), 3 * kPointerSize);
+  MemOperand* stack_space_operand = &length_operand;
   stack_space = argc() + FCA::kArgsLength + 1;
   stack_space_operand = NULL;
 
   const int spill_offset = 1 + kApiStackSpace;
   CallApiFunctionAndReturn(masm, api_function_address, thunk_ref, stack_space,
                            stack_space_operand, spill_offset,
                            return_value_operand, &context_restore_operand);
 }
 
 
@@ skipping 65 matching lines @@
                            kStackUnwindSpace, NULL, spill_offset,
                            return_value_operand, NULL);
 }
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_ARM64