Fix cctest/test-cpu-profiler/CollectCpuProfile test on Arm and MIPS simulators

src/platform-freebsd.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 38 matching lines @@
 #include <stdarg.h>
 #include <limits.h>
 
 #undef MAP_TYPE
 
 #include "v8.h"
 #include "v8threads.h"
 
 #include "platform-posix.h"
 #include "platform.h"
+#include "simulator.h"
 #include "vm-state-inl.h"
 
 
 namespace v8 {
 namespace internal {
 
 // 0 is never a valid thread id on FreeBSD since tids and pids share a
 // name space and pid 0 is used to kill the group (see man 2 kill).
 static const pthread_t kNoThread = (pthread_t) 0;
 
@@ skipping 614 matching lines @@
 
 
 static pthread_t GetThreadID() {
   pthread_t thread_id = pthread_self();
   return thread_id;
 }
 
 
 class Sampler::PlatformData : public Malloced {
  public:
-  PlatformData() : vm_tid_(GetThreadID()) {}
+  PlatformData()
+      : vm_tid_(GetThreadID()),
+        profiled_thread_id_(ThreadId::Current()) {}
 
   pthread_t vm_tid() const { return vm_tid_; }
+  ThreadId profiled_thread_id() { return profiled_thread_id_; }
 
  private:
   pthread_t vm_tid_;
+  ThreadId profiled_thread_id_;
 };
 
 
 static void ProfilerSignalHandler(int signal, siginfo_t* info, void* context) {
   USE(info);
   if (signal != SIGPROF) return;
   Isolate* isolate = Isolate::UncheckedCurrent();
   if (isolate == NULL || !isolate->IsInitialized() || !isolate->IsInUse()) {
     // We require a fully initialized and entered isolate.
     return;
   }
   if (v8::Locker::IsActive() &&
       !isolate->thread_manager()->IsLockedByCurrentThread()) {
     return;
   }
 
   Sampler* sampler = isolate->logger()->sampler();
   if (sampler == NULL || !sampler->IsActive()) return;
 
+#if defined(USE_SIMULATOR)
+#if V8_TARGET_ARCH_ARM || V8_TARGET_ARCH_MIPS
+  ThreadId thread_id = sampler->platform_data()->profiled_thread_id();
+  Isolate::PerIsolateThreadData* per_thread_data = isolate->
+      FindPerThreadDataForThread(thread_id);
+  if (!per_thread_data) return;
+  Simulator* sim = per_thread_data->simulator();
+  // Check if there is active simulator before allocating TickSample.
+  if (!sim) return;
+#endif
+#endif  // USE_SIMULATOR
+
   TickSample sample_obj;
   TickSample* sample = isolate->cpu_profiler()->TickSampleEvent();
   if (sample == NULL) sample = &sample_obj;
 
   // Extracting the sample from the context is extremely machine dependent.
   ucontext_t* ucontext = reinterpret_cast<ucontext_t*>(context);
   mcontext_t& mcontext = ucontext->uc_mcontext;
   sample->state = isolate->current_vm_state();
+#if defined(USE_SIMULATOR)
+#if V8_TARGET_ARCH_ARM
+  sample->pc = reinterpret_cast<Address>(sim->get_register(Simulator::pc));
+  sample->sp = reinterpret_cast<Address>(sim->get_register(Simulator::sp));
+  sample->fp = reinterpret_cast<Address>(sim->get_register(Simulator::r11));
+#elif V8_TARGET_ARCH_MIPS
+  sample->pc = reinterpret_cast<Address>(sim->get_register(Simulator::pc));
+  sample->sp = reinterpret_cast<Address>(sim->get_register(Simulator::sp));
+  sample->fp = reinterpret_cast<Address>(sim->get_register(Simulator::fp));
+#endif
+#else
 #if V8_HOST_ARCH_IA32
   sample->pc = reinterpret_cast<Address>(mcontext.mc_eip);
   sample->sp = reinterpret_cast<Address>(mcontext.mc_esp);
   sample->fp = reinterpret_cast<Address>(mcontext.mc_ebp);
 #elif V8_HOST_ARCH_X64
   sample->pc = reinterpret_cast<Address>(mcontext.mc_rip);
   sample->sp = reinterpret_cast<Address>(mcontext.mc_rsp);
   sample->fp = reinterpret_cast<Address>(mcontext.mc_rbp);
 #elif V8_HOST_ARCH_ARM
   sample->pc = reinterpret_cast<Address>(mcontext.mc_r15);
   sample->sp = reinterpret_cast<Address>(mcontext.mc_r13);
   sample->fp = reinterpret_cast<Address>(mcontext.mc_r11);
-#endif
+#endif  // V8_HOST_ARCH_*
+#endif  // USE_SIMULATOR
   sampler->SampleStack(sample);
   sampler->Tick(sample);
 }
 
 
 class SignalSender : public Thread {
  public:
   static const int kSignalSenderStackSize = 64 * KB;
 
   explicit SignalSender(int interval)
@@ skipping 142 matching lines @@
 
 
 void Sampler::Stop() {
   ASSERT(IsActive());
   SignalSender::RemoveActiveSampler(this);
   SetActive(false);
 }
 
 
 } }  // namespace v8::internal