BootManager: Avoid Global System Accessor

Source/Android/jni/MainAndroid.cpp

@@ -570,7 +570,7 @@ static void Run(JNIEnv* env, std::unique_ptr<BootParameters>&& boot, bool riivol
   s_need_nonblocking_alert_msg = true;
   std::unique_lock<std::mutex> surface_guard(s_surface_lock);
 
-  if (BootManager::BootCore(std::move(boot), wsi))
+  if (BootManager::BootCore(Core::System::GetInstance(), std::move(boot), wsi))
   {
     static constexpr int WAIT_STEP = 25;
     while (Core::GetState() == Core::State::Starting)

Source/Core/Core/BootManager.cpp

@@ -55,12 +55,12 @@
 namespace BootManager
 {
 // Boot the ISO or file
-bool BootCore(std::unique_ptr<BootParameters> boot, const WindowSystemInfo& wsi)
+bool BootCore(Core::System& system, std::unique_ptr<BootParameters> boot,
+              const WindowSystemInfo& wsi)
 {
   if (!boot)
     return false;
 
-  auto& system = Core::System::GetInstance();
   SConfig& StartUp = SConfig::GetInstance();
 
   if (!StartUp.SetPathsAndGameMetadata(system, *boot))

Source/Core/Core/BootManager.h

@@ -5,12 +5,17 @@
 
 #include <memory>
 
+namespace Core
+{
+class System;
+}
 struct BootParameters;
 struct WindowSystemInfo;
 
 namespace BootManager
 {
-bool BootCore(std::unique_ptr<BootParameters> parameters, const WindowSystemInfo& wsi);
+bool BootCore(Core::System& system, std::unique_ptr<BootParameters> parameters,
+              const WindowSystemInfo& wsi);
 
 // Synchronise Dolphin's configuration with the SYSCONF (which may have changed during emulation),
 // and restore settings that were overriden by per-game INIs or for some other reason.

Source/Core/DolphinNoGUI/MainNoGUI.cpp

@@ -24,6 +24,7 @@
 #include "Core/Core.h"
 #include "Core/DolphinAnalytics.h"
 #include "Core/Host.h"
+#include "Core/System.h"
 
 #include "UICommon/CommandLineParse.h"
 #ifdef USE_DISCORD_PRESENCE
@@ -304,7 +305,7 @@ int main(int argc, char* argv[])
 
   DolphinAnalytics::Instance().ReportDolphinStart("nogui");
 
-  if (!BootManager::BootCore(std::move(boot), wsi))
+  if (!BootManager::BootCore(Core::System::GetInstance(), std::move(boot), wsi))
   {
     fprintf(stderr, "Could not boot the specified file\n");
     return 1;

Source/Core/DolphinQt/MainWindow.cpp

@@ -1126,7 +1126,7 @@ void MainWindow::StartGame(std::unique_ptr<BootParameters>&& parameters)
   ShowRenderWidget();
 
   // Boot up, show an error if it fails to load the game.
-  if (!BootManager::BootCore(std::move(parameters),
+  if (!BootManager::BootCore(Core::System::GetInstance(), std::move(parameters),
                              ::GetWindowSystemInfo(m_render_widget->windowHandle())))
   {
     ModalMessageBox::critical(this, tr("Error"), tr("Failed to init core"), QMessageBox::Ok);