DolphinNoGUI: Runtime selection of platform

Source/Core/DolphinNoGUI/Platform.cpp

@@ -0,0 +1,53 @@
+// Copyright 2018 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#include "DolphinNoGUI/Platform.h"
+#include "Core/IOS/IOS.h"
+#include "Core/IOS/STM/STM.h"
+#include "Core/State.h"
+
+namespace ProcessorInterface
+{
+void PowerButton_Tap();
+}
+
+Platform::~Platform() = default;
+
+bool Platform::Init()
+{
+  return true;
+}
+
+void Platform::SetTitle(const std::string& title)
+{
+}
+
+void Platform::UpdateRunningFlag()
+{
+  if (m_shutdown_requested.TestAndClear())
+  {
+    const auto ios = IOS::HLE::GetIOS();
+    const auto stm = ios ? ios->GetDeviceByName("/dev/stm/eventhook") : nullptr;
+    if (!m_tried_graceful_shutdown.IsSet() && stm &&
+        std::static_pointer_cast<IOS::HLE::Device::STMEventHook>(stm)->HasHookInstalled())
+    {
+      ProcessorInterface::PowerButton_Tap();
+      m_tried_graceful_shutdown.Set();
+    }
+    else
+    {
+      m_running.Clear();
+    }
+  }
+}
+
+void Platform::Stop()
+{
+  m_running.Clear();
+}
+
+void Platform::RequestShutdown()
+{
+  m_shutdown_requested.Set();
+}