Notify CPU profiler when calling native getters

src/arm/macro-assembler-arm.cc

Index: src/arm/macro-assembler-arm.cc
diff --git a/src/arm/macro-assembler-arm.cc b/src/arm/macro-assembler-arm.cc
index 4b6eac2974c1b6cdd11d017b5989e29ea678a56f..81a2d37643d2b018ae16d817559e0e9a0063214d 100644
--- a/src/arm/macro-assembler-arm.cc
+++ b/src/arm/macro-assembler-arm.cc
@@ -2244,6 +2244,9 @@ static int AddressOffset(ExternalReference ref0, ExternalReference ref1) {
 
 
 void MacroAssembler::CallApiFunctionAndReturn(ExternalReference function,
+                                              Address function_address,
+                                              ExternalReference thunk_ref,
+                                              Register thunk_last_arg,
                                               int stack_space,
                                               bool returns_handle,
                                               int return_value_offset) {
@@ -2274,11 +2277,31 @@ void MacroAssembler::CallApiFunctionAndReturn(ExternalReference function,
     PopSafepointRegisters();
   }
 
+  ASSERT(!thunk_last_arg.is(r3));
+  Label profiler_disabled;
+  Label end_profiler_check;
+  bool* is_profiling_flag =
+      isolate()->cpu_profiler()->is_profiling_address();
+  STATIC_ASSERT(sizeof(*is_profiling_flag) == 1);
+  mov(r3, Operand(reinterpret_cast<int32_t>(is_profiling_flag)));
+  ldrb(r3, MemOperand(r3, 0));
+  cmp(r3, Operand(0));
+  b(eq, &profiler_disabled);
+
+  // Additional parameter is the address of the actual callback.
+  mov(thunk_last_arg, Operand(reinterpret_cast<int32_t>(function_address)));
+  mov(r3, Operand(thunk_ref));
+  jmp(&end_profiler_check);
+
+  bind(&profiler_disabled);
+  mov(r3, Operand(function));
+  bind(&end_profiler_check);
+
   // Native call returns to the DirectCEntry stub which redirects to the
   // return address pushed on stack (could have moved after GC).
   // DirectCEntry stub itself is generated early and never moves.
   DirectCEntryStub stub;
-  stub.GenerateCall(this, function);
+  stub.GenerateCall(this, r3);
 
   if (FLAG_log_timer_events) {
     FrameScope frame(this, StackFrame::MANUAL);