split api call stubs into accessor and function call stubs

src/x64/macro-assembler-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.
 
 #include "src/v8.h"
 
 #if V8_TARGET_ARCH_X64
 
 #include "src/base/bits.h"
 #include "src/base/division-by-constant.h"
@@ skipping 688 matching lines @@
   return static_cast<int>(offset);
 }
 
 
 void MacroAssembler::PrepareCallApiFunction(int arg_stack_space) {
   EnterApiExitFrame(arg_stack_space);
 }
 
 
 void MacroAssembler::CallApiFunctionAndReturn(
-    Register function_address,
-    ExternalReference thunk_ref,
-    Register thunk_last_arg,
-    int stack_space,
-    Operand return_value_operand,
-    Operand* context_restore_operand) {
+    Register function_address, ExternalReference thunk_ref,
+    Register thunk_last_arg, int stack_space, Operand* stack_space_operand,
+    Operand return_value_operand, Operand* context_restore_operand) {
   Label prologue;
   Label promote_scheduled_exception;
   Label exception_handled;
   Label delete_allocated_handles;
   Label leave_exit_frame;
   Label write_back;
 
   Factory* factory = isolate()->factory();
   ExternalReference next_address =
       ExternalReference::handle_scope_next_address(isolate());
@@ skipping 106 matching lines @@
 
   Abort(kAPICallReturnedInvalidObject);
 
   bind(&ok);
 #endif
 
   bool restore_context = context_restore_operand != NULL;
   if (restore_context) {
     movp(rsi, *context_restore_operand);
   }
+  if (stack_space_operand != nullptr) {
+    movp(rbx, *stack_space_operand);
+  }
   LeaveApiExitFrame(!restore_context);
-  ret(stack_space * kPointerSize);
+  if (stack_space_operand != nullptr) {
+    DCHECK_EQ(stack_space, 0);
+    PopReturnAddressTo(rcx);
+    addq(rsp, rbx);
+    jmp(rcx);
+  } else {
+    ret(stack_space * kPointerSize);
+  }
 
   bind(&promote_scheduled_exception);
   {
     FrameScope frame(this, StackFrame::INTERNAL);
     CallRuntime(Runtime::kPromoteScheduledException, 0);
   }
   jmp(&exception_handled);
 
   // HandleScope limit has changed. Delete allocated extensions.
   bind(&delete_allocated_handles);
@@ skipping 4543 matching lines @@
   if (mag.shift > 0) sarl(rdx, Immediate(mag.shift));
   movl(rax, dividend);
   shrl(rax, Immediate(31));
   addl(rdx, rax);
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64