hle/service: Replace global system instance calls with instance-based ones

Migrates the HLE service code off the use of directly accessing the
global system instance where trivially able to do so.

This removes all usages of Core::CurrentProcess from the service code,
only 8 occurrences of this function exist elsewhere. There's still quite
a bit of "System::GetInstance()" being used, however this was able to
replace a few instances.

src/core/core.cpp

@@ -111,7 +111,8 @@ FileSys::VirtualFile GetGameFileFromPath(const FileSys::VirtualFilesystem& vfs,
 }
 struct System::Impl {
     explicit Impl(System& system)
-        : kernel{system}, cpu_core_manager{system}, applet_manager{system}, reporter{system} {}
+        : kernel{system}, fs_controller{system}, cpu_core_manager{system},
+          applet_manager{system}, reporter{system} {}
 
     Cpu& CurrentCpuCore() {
         return cpu_core_manager.GetCurrentCore();
@@ -641,11 +642,11 @@ bool System::GetExitLock() const {
     return impl->exit_lock;
 }
 
-void System::SetCurrentProcessBuildID(std::array<u8, 32> id) {
+void System::SetCurrentProcessBuildID(const CurrentBuildProcessID& id) {
     impl->build_id = id;
 }
 
-const std::array<u8, 32>& System::GetCurrentProcessBuildID() const {
+const System::CurrentBuildProcessID& System::GetCurrentProcessBuildID() const {
     return impl->build_id;
 }
 

src/core/core.h

@@ -98,6 +98,8 @@ FileSys::VirtualFile GetGameFileFromPath(const FileSys::VirtualFilesystem& vfs,
 
 class System {
 public:
+    using CurrentBuildProcessID = std::array<u8, 0x20>;
+
     System(const System&) = delete;
     System& operator=(const System&) = delete;
 
@@ -330,9 +332,9 @@ public:
 
     bool GetExitLock() const;
 
-    void SetCurrentProcessBuildID(std::array<u8, 0x20> id);
+    void SetCurrentProcessBuildID(const CurrentBuildProcessID& id);
 
-    const std::array<u8, 0x20>& GetCurrentProcessBuildID() const;
+    const CurrentBuildProcessID& GetCurrentProcessBuildID() const;
 
 private:
     System();

src/core/file_sys/romfs_factory.cpp

@@ -35,11 +35,11 @@ void RomFSFactory::SetPackedUpdate(VirtualFile update_raw) {
     this->update_raw = std::move(update_raw);
 }
 
-ResultVal<VirtualFile> RomFSFactory::OpenCurrentProcess() const {
+ResultVal<VirtualFile> RomFSFactory::OpenCurrentProcess(u64 current_process_title_id) const {
     if (!updatable)
         return MakeResult<VirtualFile>(file);
 
-    const PatchManager patch_manager(Core::CurrentProcess()->GetTitleID());
+    const PatchManager patch_manager(current_process_title_id);
     return MakeResult<VirtualFile>(
         patch_manager.PatchRomFS(file, ivfc_offset, ContentRecordType::Program, update_raw));
 }

src/core/file_sys/romfs_factory.h

@@ -33,7 +33,7 @@ public:
     ~RomFSFactory();
 
     void SetPackedUpdate(VirtualFile update_raw);
-    ResultVal<VirtualFile> OpenCurrentProcess() const;
+    ResultVal<VirtualFile> OpenCurrentProcess(u64 current_process_title_id) const;
     ResultVal<VirtualFile> Open(u64 title_id, StorageId storage, ContentRecordType type) const;
 
 private:

src/core/hle/service/am/am.cpp

@@ -1142,12 +1142,12 @@ void IApplicationFunctions::PopLaunchParameter(Kernel::HLERequestContext& ctx) {
     if (kind == LaunchParameterKind::ApplicationSpecific && !launch_popped_application_specific) {
         const auto backend = BCAT::CreateBackendFromSettings(
             [this](u64 tid) { return system.GetFileSystemController().GetBCATDirectory(tid); });
-        const auto build_id_full = Core::System::GetInstance().GetCurrentProcessBuildID();
+        const auto build_id_full = system.GetCurrentProcessBuildID();
         u64 build_id{};
         std::memcpy(&build_id, build_id_full.data(), sizeof(u64));
 
         const auto data =
-            backend->GetLaunchParameter({Core::CurrentProcess()->GetTitleID(), build_id});
+            backend->GetLaunchParameter({system.CurrentProcess()->GetTitleID(), build_id});
 
         if (data.has_value()) {
             IPC::ResponseBuilder rb{ctx, 2, 0, 1};
@@ -1200,7 +1200,7 @@ void IApplicationFunctions::EnsureSaveData(Kernel::HLERequestContext& ctx) {
     LOG_DEBUG(Service_AM, "called, uid={:016X}{:016X}", user_id[1], user_id[0]);
 
     FileSys::SaveDataDescriptor descriptor{};
-    descriptor.title_id = Core::CurrentProcess()->GetTitleID();
+    descriptor.title_id = system.CurrentProcess()->GetTitleID();
     descriptor.user_id = user_id;
     descriptor.type = FileSys::SaveDataType::SaveData;
     const auto res = system.GetFileSystemController().CreateSaveData(

src/core/hle/service/bcat/bcat.cpp

@@ -6,8 +6,9 @@
 
 namespace Service::BCAT {
 
-BCAT::BCAT(std::shared_ptr<Module> module, FileSystem::FileSystemController& fsc, const char* name)
-    : Module::Interface(std::move(module), fsc, name) {
+BCAT::BCAT(Core::System& system, std::shared_ptr<Module> module,
+           FileSystem::FileSystemController& fsc, const char* name)
+    : Interface(system, std::move(module), fsc, name) {
     // clang-format off
     static const FunctionInfo functions[] = {
         {0, &BCAT::CreateBcatService, "CreateBcatService"},

src/core/hle/service/bcat/bcat.h

@@ -6,12 +6,16 @@
 
 #include "core/hle/service/bcat/module.h"
 
+namespace Core {
+class System;
+}
+
 namespace Service::BCAT {
 
 class BCAT final : public Module::Interface {
 public:
-    explicit BCAT(std::shared_ptr<Module> module, FileSystem::FileSystemController& fsc,
-                  const char* name);
+    explicit BCAT(Core::System& system, std::shared_ptr<Module> module,
+                  FileSystem::FileSystemController& fsc, const char* name);
     ~BCAT() override;
 };
 

src/core/hle/service/bcat/module.cpp

@@ -35,8 +35,7 @@ using BCATDigest = std::array<u8, 0x10>;
 
 namespace {
 
-u64 GetCurrentBuildID() {
-    const auto& id = Core::System::GetInstance().GetCurrentProcessBuildID();
+u64 GetCurrentBuildID(const Core::System::CurrentBuildProcessID& id) {
     u64 out{};
     std::memcpy(&out, id.data(), sizeof(u64));
     return out;
@@ -125,7 +124,8 @@ private:
 
 class IBcatService final : public ServiceFramework<IBcatService> {
 public:
-    IBcatService(Backend& backend) : ServiceFramework("IBcatService"), backend(backend) {
+    explicit IBcatService(Core::System& system_, Backend& backend_)
+        : ServiceFramework("IBcatService"), system{system_}, backend{backend_} {
         // clang-format off
         static const FunctionInfo functions[] = {
             {10100, &IBcatService::RequestSyncDeliveryCache, "RequestSyncDeliveryCache"},
@@ -163,7 +163,8 @@ private:
     void RequestSyncDeliveryCache(Kernel::HLERequestContext& ctx) {
         LOG_DEBUG(Service_BCAT, "called");
 
-        backend.Synchronize({Core::CurrentProcess()->GetTitleID(), GetCurrentBuildID()},
+        backend.Synchronize({system.CurrentProcess()->GetTitleID(),
+                             GetCurrentBuildID(system.GetCurrentProcessBuildID())},
                             progress.at(static_cast<std::size_t>(SyncType::Normal)));
 
         IPC::ResponseBuilder rb{ctx, 2, 0, 1};
@@ -179,7 +180,8 @@ private:
 
         LOG_DEBUG(Service_BCAT, "called, name={}", name);
 
-        backend.SynchronizeDirectory({Core::CurrentProcess()->GetTitleID(), GetCurrentBuildID()},
+        backend.SynchronizeDirectory({system.CurrentProcess()->GetTitleID(),
+                                      GetCurrentBuildID(system.GetCurrentProcessBuildID())},
                                      name,
                                      progress.at(static_cast<std::size_t>(SyncType::Directory)));
 
@@ -244,6 +246,7 @@ private:
         rb.Push(RESULT_SUCCESS);
     }
 
+    Core::System& system;
     Backend& backend;
 
     std::array<ProgressServiceBackend, static_cast<std::size_t>(SyncType::Count)> progress{
@@ -257,7 +260,7 @@ void Module::Interface::CreateBcatService(Kernel::HLERequestContext& ctx) {
 
     IPC::ResponseBuilder rb{ctx, 2, 0, 1};
     rb.Push(RESULT_SUCCESS);
-    rb.PushIpcInterface<IBcatService>(*backend);
+    rb.PushIpcInterface<IBcatService>(system, *backend);
 }
 
 class IDeliveryCacheFileService final : public ServiceFramework<IDeliveryCacheFileService> {
@@ -539,7 +542,7 @@ void Module::Interface::CreateDeliveryCacheStorageService(Kernel::HLERequestCont
     IPC::ResponseBuilder rb{ctx, 2, 0, 1};
     rb.Push(RESULT_SUCCESS);
     rb.PushIpcInterface<IDeliveryCacheStorageService>(
-        fsc.GetBCATDirectory(Core::CurrentProcess()->GetTitleID()));
+        fsc.GetBCATDirectory(system.CurrentProcess()->GetTitleID()));
 }
 
 void Module::Interface::CreateDeliveryCacheStorageServiceWithApplicationId(
@@ -565,22 +568,23 @@ std::unique_ptr<Backend> CreateBackendFromSettings(DirectoryGetter getter) {
     return std::make_unique<NullBackend>(std::move(getter));
 }
 
-Module::Interface::Interface(std::shared_ptr<Module> module, FileSystem::FileSystemController& fsc,
-                             const char* name)
-    : ServiceFramework(name), fsc(fsc), module(std::move(module)),
-      backend(CreateBackendFromSettings([&fsc](u64 tid) { return fsc.GetBCATDirectory(tid); })) {}
+Module::Interface::Interface(Core::System& system_, std::shared_ptr<Module> module_,
+                             FileSystem::FileSystemController& fsc_, const char* name)
+    : ServiceFramework(name), fsc{fsc_}, module{std::move(module_)},
+      backend{CreateBackendFromSettings([&fsc_](u64 tid) { return fsc_.GetBCATDirectory(tid); })},
+      system{system_} {}
 
 Module::Interface::~Interface() = default;
 
 void InstallInterfaces(Core::System& system) {
     auto module = std::make_shared<Module>();
-    std::make_shared<BCAT>(module, system.GetFileSystemController(), "bcat:a")
+    std::make_shared<BCAT>(system, module, system.GetFileSystemController(), "bcat:a")
         ->InstallAsService(system.ServiceManager());
-    std::make_shared<BCAT>(module, system.GetFileSystemController(), "bcat:m")
+    std::make_shared<BCAT>(system, module, system.GetFileSystemController(), "bcat:m")
         ->InstallAsService(system.ServiceManager());
-    std::make_shared<BCAT>(module, system.GetFileSystemController(), "bcat:u")
+    std::make_shared<BCAT>(system, module, system.GetFileSystemController(), "bcat:u")
         ->InstallAsService(system.ServiceManager());
-    std::make_shared<BCAT>(module, system.GetFileSystemController(), "bcat:s")
+    std::make_shared<BCAT>(system, module, system.GetFileSystemController(), "bcat:s")
         ->InstallAsService(system.ServiceManager());
 }
 

src/core/hle/service/bcat/module.h

@@ -6,6 +6,10 @@
 
 #include "core/hle/service/service.h"
 
+namespace Core {
+class System;
+}
+
 namespace Service {
 
 namespace FileSystem {
@@ -20,8 +24,8 @@ class Module final {
 public:
     class Interface : public ServiceFramework<Interface> {
     public:
-        explicit Interface(std::shared_ptr<Module> module, FileSystem::FileSystemController& fsc,
-                           const char* name);
+        explicit Interface(Core::System& system_, std::shared_ptr<Module> module_,
+                           FileSystem::FileSystemController& fsc_, const char* name);
         ~Interface() override;
 
         void CreateBcatService(Kernel::HLERequestContext& ctx);
@@ -33,6 +37,9 @@ public:
 
         std::shared_ptr<Module> module;
         std::unique_ptr<Backend> backend;
+
+    private:
+        Core::System& system;
     };
 };
 

src/core/hle/service/fatal/fatal.cpp

@@ -66,7 +66,7 @@ enum class FatalType : u32 {
 
 static void GenerateErrorReport(Core::System& system, ResultCode error_code,
                                 const FatalInfo& info) {
-    const auto title_id = Core::CurrentProcess()->GetTitleID();
+    const auto title_id = system.CurrentProcess()->GetTitleID();
     std::string crash_report = fmt::format(
         "Yuzu {}-{} crash report\n"
         "Title ID:                        {:016x}\n"

src/core/hle/service/filesystem/filesystem.cpp

@@ -241,7 +241,7 @@ ResultVal<FileSys::EntryType> VfsDirectoryServiceWrapper::GetEntryType(
     return FileSys::ERROR_PATH_NOT_FOUND;
 }
 
-FileSystemController::FileSystemController() = default;
+FileSystemController::FileSystemController(Core::System& system_) : system{system_} {}
 
 FileSystemController::~FileSystemController() = default;
 
@@ -290,7 +290,7 @@ ResultVal<FileSys::VirtualFile> FileSystemController::OpenRomFSCurrentProcess()
         return ResultCode(-1);
     }
 
-    return romfs_factory->OpenCurrentProcess();
+    return romfs_factory->OpenCurrentProcess(system.CurrentProcess()->GetTitleID());
 }
 
 ResultVal<FileSys::VirtualFile> FileSystemController::OpenRomFS(
@@ -447,10 +447,10 @@ FileSys::SaveDataSize FileSystemController::ReadSaveDataSize(FileSys::SaveDataTy
         FileSys::SaveDataSize new_size{SUFFICIENT_SAVE_DATA_SIZE, SUFFICIENT_SAVE_DATA_SIZE};
 
         FileSys::NACP nacp;
-        const auto res = Core::System::GetInstance().GetAppLoader().ReadControlData(nacp);
+        const auto res = system.GetAppLoader().ReadControlData(nacp);
 
         if (res != Loader::ResultStatus::Success) {
-            FileSys::PatchManager pm{Core::CurrentProcess()->GetTitleID()};
+            FileSys::PatchManager pm{system.CurrentProcess()->GetTitleID()};
             auto [nacp_unique, discard] = pm.GetControlMetadata();
 
             if (nacp_unique != nullptr) {
@@ -702,10 +702,10 @@ void FileSystemController::CreateFactories(FileSys::VfsFilesystem& vfs, bool ove
     if (bis_factory == nullptr) {
         bis_factory =
             std::make_unique<FileSys::BISFactory>(nand_directory, load_directory, dump_directory);
-        Core::System::GetInstance().RegisterContentProvider(
-            FileSys::ContentProviderUnionSlot::SysNAND, bis_factory->GetSystemNANDContents());
-        Core::System::GetInstance().RegisterContentProvider(
-            FileSys::ContentProviderUnionSlot::UserNAND, bis_factory->GetUserNANDContents());
+        system.RegisterContentProvider(FileSys::ContentProviderUnionSlot::SysNAND,
+                                       bis_factory->GetSystemNANDContents());
+        system.RegisterContentProvider(FileSys::ContentProviderUnionSlot::UserNAND,
+                                       bis_factory->GetUserNANDContents());
     }
 
     if (save_data_factory == nullptr) {
@@ -714,7 +714,7 @@ void FileSystemController::CreateFactories(FileSys::VfsFilesystem& vfs, bool ove
 
     if (sdmc_factory == nullptr) {
         sdmc_factory = std::make_unique<FileSys::SDMCFactory>(std::move(sd_directory));
-        Core::System::GetInstance().RegisterContentProvider(FileSys::ContentProviderUnionSlot::SDMC,
+        system.RegisterContentProvider(FileSys::ContentProviderUnionSlot::SDMC,
                                        sdmc_factory->GetSDMCContents());
     }
 }

src/core/hle/service/filesystem/filesystem.h

@@ -10,6 +10,10 @@
 #include "core/file_sys/vfs.h"
 #include "core/hle/result.h"
 
+namespace Core {
+class System;
+}
+
 namespace FileSys {
 class BISFactory;
 class RegisteredCache;
@@ -52,7 +56,7 @@ enum class ImageDirectoryId : u32 {
 
 class FileSystemController {
 public:
-    FileSystemController();
+    explicit FileSystemController(Core::System& system_);
     ~FileSystemController();
 
     ResultCode RegisterRomFS(std::unique_ptr<FileSys::RomFSFactory>&& factory);
@@ -125,6 +129,8 @@ private:
     std::unique_ptr<FileSys::XCI> gamecard;
     std::unique_ptr<FileSys::RegisteredCache> gamecard_registered;
     std::unique_ptr<FileSys::PlaceholderCache> gamecard_placeholder;
+
+    Core::System& system;
 };
 
 void InstallInterfaces(Core::System& system);

src/core/hle/service/ldr/ldr.cpp

@@ -163,7 +163,7 @@ public:
             return;
         }
 
-        if (Core::CurrentProcess()->GetTitleID() != header.title_id) {
+        if (system.CurrentProcess()->GetTitleID() != header.title_id) {
             LOG_ERROR(Service_LDR,
                       "Attempting to load NRR with title ID other than current process. (actual "
                       "{:016X})!",
@@ -327,7 +327,7 @@ public:
         }
 
         // Load NRO as new executable module
-        auto* process = Core::CurrentProcess();
+        auto* process = system.CurrentProcess();
         auto& vm_manager = process->VMManager();
         auto map_address = vm_manager.FindFreeRegion(nro_size + bss_size);
 
@@ -411,7 +411,7 @@ public:
             return;
         }
 
-        auto& vm_manager = Core::CurrentProcess()->VMManager();
+        auto& vm_manager = system.CurrentProcess()->VMManager();
         const auto& nro_info = iter->second;
 
         // Unmap the mirrored memory

src/core/hle/service/ns/pl_u.cpp

@@ -324,14 +324,14 @@ void PL_U::GetSharedMemoryAddressOffset(Kernel::HLERequestContext& ctx) {
 void PL_U::GetSharedMemoryNativeHandle(Kernel::HLERequestContext& ctx) {
     // Map backing memory for the font data
     LOG_DEBUG(Service_NS, "called");
-    Core::CurrentProcess()->VMManager().MapMemoryBlock(SHARED_FONT_MEM_VADDR, impl->shared_font, 0,
+    system.CurrentProcess()->VMManager().MapMemoryBlock(SHARED_FONT_MEM_VADDR, impl->shared_font, 0,
                                                         SHARED_FONT_MEM_SIZE,
                                                         Kernel::MemoryState::Shared);
 
     // Create shared font memory object
     auto& kernel = system.Kernel();
     impl->shared_font_mem = Kernel::SharedMemory::Create(
-        kernel, Core::CurrentProcess(), SHARED_FONT_MEM_SIZE, Kernel::MemoryPermission::ReadWrite,
+        kernel, system.CurrentProcess(), SHARED_FONT_MEM_SIZE, Kernel::MemoryPermission::ReadWrite,
         Kernel::MemoryPermission::Read, SHARED_FONT_MEM_VADDR, Kernel::MemoryRegion::BASE,
         "PL_U:shared_font_mem");