stub fast api calls

src/x64/macro-assembler-x64.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 653 matching lines @@
   return static_cast<int>(offset);
 }
 
 
 void MacroAssembler::PrepareCallApiFunction(int arg_stack_space) {
   EnterApiExitFrame(arg_stack_space);
 }
 
 
 void MacroAssembler::CallApiFunctionAndReturn(
-    Address function_address,
+    Register function_address,
     Address thunk_address,
     Register thunk_last_arg,
     int stack_space,
     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());
   const int kNextOffset = 0;
   const int kLimitOffset = Offset(
       ExternalReference::handle_scope_limit_address(isolate()),
       next_address);
   const int kLevelOffset = Offset(
       ExternalReference::handle_scope_level_address(isolate()),
       next_address);
   ExternalReference scheduled_exception_address =
       ExternalReference::scheduled_exception_address(isolate());
 
+  ASSERT(rdx.is(function_address));
   // Allocate HandleScope in callee-save registers.
   Register prev_next_address_reg = r14;
   Register prev_limit_reg = rbx;
   Register base_reg = r15;
   Move(base_reg, next_address);
   movp(prev_next_address_reg, Operand(base_reg, kNextOffset));
   movp(prev_limit_reg, Operand(base_reg, kLimitOffset));
   addl(Operand(base_reg, kLevelOffset), Immediate(1));
 
   if (FLAG_log_timer_events) {
     FrameScope frame(this, StackFrame::MANUAL);
     PushSafepointRegisters();
     PrepareCallCFunction(1);
     LoadAddress(arg_reg_1, ExternalReference::isolate_address(isolate()));
     CallCFunction(ExternalReference::log_enter_external_function(isolate()), 1);
     PopSafepointRegisters();
   }
 
 
   Label profiler_disabled;
   Label end_profiler_check;
   bool* is_profiling_flag =
       isolate()->cpu_profiler()->is_profiling_address();
   STATIC_ASSERT(sizeof(*is_profiling_flag) == 1);
   Move(rax, is_profiling_flag, RelocInfo::EXTERNAL_REFERENCE);
   cmpb(Operand(rax, 0), Immediate(0));
   j(zero, &profiler_disabled);
 
   // Third parameter is the address of the actual getter function.
-  Move(thunk_last_arg, function_address, RelocInfo::EXTERNAL_REFERENCE);
+  Move(thunk_last_arg, function_address);
   Move(rax, thunk_address, RelocInfo::EXTERNAL_REFERENCE);
   jmp(&end_profiler_check);
 
   bind(&profiler_disabled);
   // Call the api function!
-  Move(rax, reinterpret_cast<Address>(function_address),
-       RelocInfo::EXTERNAL_REFERENCE);
+  Move(rax, function_address);
 
   bind(&end_profiler_check);
 
   // Call the api function!
   call(rax);
 
   if (FLAG_log_timer_events) {
     FrameScope frame(this, StackFrame::MANUAL);
     PushSafepointRegisters();
     PrepareCallCFunction(1);
@@ skipping 4246 matching lines @@
   j(equal, found);
   movp(current, FieldOperand(current, Map::kPrototypeOffset));
   CompareRoot(current, Heap::kNullValueRootIndex);
   j(not_equal, &loop_again);
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64