Port count-based profiler to ARM

src/runtime-profiler.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 155 matching lines @@
   if (FLAG_trace_osr) {
     PrintF("[patching stack checks in ");
     function->PrintName();
     PrintF(" for on-stack replacement]\n");
   }
 
   // Get the stack check stub code object to match against.  We aren't
   // prepared to generate it, but we don't expect to have to.
   bool found_code = false;
   Code* stack_check_code = NULL;
-#ifdef V8_TARGET_ARCH_IA32
+#if defined(V8_TARGET_ARCH_IA32) || defined(V8_TARGET_ARCH_ARM)
   if (FLAG_count_based_interrupts) {
     InterruptStub interrupt_stub;
     found_code = interrupt_stub.FindCodeInCache(&stack_check_code);
   } else  // NOLINT
 #endif
   {  // NOLINT
     StackCheckStub check_stub;
     found_code = check_stub.FindCodeInCache(&stack_check_code);
   }
   if (found_code) {
@@ skipping 150 matching lines @@
     // this as part of collecting them because this will interfere with
     // the sample lookup in case of recursive functions.
     for (int i = 0; i < sample_count; i++) {
       AddSample(samples[i], kSamplerFrameWeight[i]);
     }
   }
 }
 
 
 void RuntimeProfiler::NotifyTick() {
-#ifdef V8_TARGET_ARCH_IA32
+#if defined(V8_TARGET_ARCH_IA32) || defined(V8_TARGET_ARCH_ARM)
   if (FLAG_count_based_interrupts) return;
 #endif
   isolate_->stack_guard()->RequestRuntimeProfilerTick();
 }
 
 
 void RuntimeProfiler::SetUp() {
   ASSERT(has_been_globally_set_up_);
   if (!FLAG_watch_ic_patching) {
     ClearSampleBuffer();
@@ skipping 109 matching lines @@
 
 bool RuntimeProfilerRateLimiter::SuspendIfNecessary() {
   if (!RuntimeProfiler::IsSomeIsolateInJS()) {
     return RuntimeProfiler::WaitForSomeIsolateToEnterJS();
   }
   return false;
 }
 
 
 } }  // namespace v8::internal