Notify CPU profiler when calling native getters

src/mips/macro-assembler-mips.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 3891 matching lines @@
   Jump(stub->GetCode(isolate()), RelocInfo::CODE_TARGET);
 }
 
 
 static int AddressOffset(ExternalReference ref0, ExternalReference ref1) {
   return ref0.address() - ref1.address();
 }
 
 
 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_from_fp) {
   ExternalReference next_address =
       ExternalReference::handle_scope_next_address(isolate());
   const int kNextOffset = 0;
   const int kLimitOffset = AddressOffset(
       ExternalReference::handle_scope_limit_address(isolate()),
       next_address);
   const int kLevelOffset = AddressOffset(
@@ skipping 18 matching lines @@
   }
 
   // The O32 ABI requires us to pass a pointer in a0 where the returned struct
   // (4 bytes) will be placed. This is also built into the Simulator.
   // Set up the pointer to the returned value (a0). It was allocated in
   // EnterExitFrame.
   if (returns_handle) {
     addiu(a0, fp, ExitFrameConstants::kStackSpaceOffset);
   }
 
+  Label profiler_disabled;
+  Label end_profiler_check;
+  bool* is_profiling_flag =
+      isolate()->cpu_profiler()->is_profiling_address();
+  STATIC_ASSERT(sizeof(*is_profiling_flag) == 1);
+  li(t9, reinterpret_cast<int32_t>(is_profiling_flag));
+  lb(t9, MemOperand(t9, 0));
+  beq(t9, zero_reg, &profiler_disabled);
+
+  // Third parameter is the address of the actual getter function.
+  li(thunk_last_arg, reinterpret_cast<int32_t>(function_address));
+  li(t9, Operand(thunk_ref));
+  jmp(&end_profiler_check);
+
+  bind(&profiler_disabled);
+  li(t9, 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, t9);
 
   if (FLAG_log_timer_events) {
     FrameScope frame(this, StackFrame::MANUAL);
     PushSafepointRegisters();
     PrepareCallCFunction(1, a0);
     li(a0, Operand(ExternalReference::isolate_address(isolate())));
     CallCFunction(ExternalReference::log_leave_external_function(isolate()), 1);
     PopSafepointRegisters();
   }
 
@@ skipping 1561 matching lines @@
        opcode == BGTZL);
   opcode = (cond == eq) ? BEQ : BNE;
   instr = (instr & ~kOpcodeMask) | opcode;
   masm_.emit(instr);
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_MIPS