1 files changed, 36 insertions, 3 deletions
diff --git a/src/core/loader/deconstructed_rom_directory.cpp b/src/core/loader/deconstructed_rom_directory.cpp
index 5e2ec7e0b9..1dce245f7f 100644
--- a/src/core/loader/deconstructed_rom_directory.cpp
+++ b/src/core/loader/deconstructed_rom_directory.cpp
@@ -13,6 +13,7 @@
 #include "core/file_sys/control_metadata.h"
 #include "core/file_sys/patch_manager.h"
 #include "core/file_sys/romfs_factory.h"
+#include "core/file_sys/romfs.h"
 #include "core/hle/kernel/k_page_table.h"
 #include "core/hle/kernel/k_process.h"
 #include "core/hle/service/filesystem/filesystem.h"
@@ -129,10 +130,14 @@ AppLoader_DeconstructedRomDirectory::AppLoader_DeconstructedRomDirectory(
     : AppLoader(directory->GetFile("main"))
     , dir(std::move(directory))
     , override_update(override_update_)
+    , standalone(false)
 {}
 
 FileType AppLoader_DeconstructedRomDirectory::IdentifyType(const FileSys::VirtualFile& dir_file) {
-    if (FileSys::IsDirectoryExeFS(dir_file->GetContainingDirectory())) {
+    const auto directory = dir_file->GetContainingDirectory();
+    if (dir_file->GetName() == "main" && directory &&
+        AppLoader_NSO::IdentifyType(dir_file) == FileType::NSO &&
+        FileSys::IsDirectoryExeFS(directory)) {
         return FileType::DeconstructedRomDirectory;
     }
 
@@ -182,11 +187,11 @@ AppLoader_DeconstructedRomDirectory::LoadResult AppLoader_DeconstructedRomDirect
     }
     metadata.Print();
 
-    // Enable NCE only for applications with 39-bit address space.
+    // Extended ACID programs currently require the Dynarmic compatibility path.
     const bool is_39bit =
         metadata.GetAddressSpaceType() == FileSys::ProgramAddressSpaceType::Is39Bit;
     const bool is_application = metadata.GetPoolPartition() == FileSys::PoolPartition::Application;
-    Settings::SetNceEnabled(is_39bit);
+    Settings::SetNceEnabled(is_39bit && !metadata.UsesExtendedAcid());
 
     const std::array static_modules = {"rtld",    "main",    "subsdk0", "subsdk1", "subsdk2",
                                        "subsdk3", "subsdk4", "subsdk5", "subsdk6", "subsdk7",
@@ -267,11 +272,39 @@ AppLoader_DeconstructedRomDirectory::LoadResult AppLoader_DeconstructedRomDirect
     }
 
     is_loaded = true;
+    if (standalone) {
+        title_id = metadata.GetTitleID();
+        system.GetFileSystemController().RegisterProcess(
+            process.GetProcessId(), {},
+            std::make_shared<FileSys::RomFSFactory>(*this, system.GetContentProvider(),
+                                                    system.GetFileSystemController()));
+    }
     return {ResultStatus::Success,
             LoadParameters{metadata.GetMainThreadPriority(), metadata.GetMainThreadStackSize()}};
 }
 
 ResultStatus AppLoader_DeconstructedRomDirectory::ReadRomFS(FileSys::VirtualFile& out_dir) {
+    if (romfs == nullptr && standalone) {
+        const auto directory = file->GetContainingDirectory();
+        for (const auto& entry : directory->GetFiles()) {
+            if (entry->GetExtension() == "romfs") {
+                romfs = entry;
+                break;
+            }
+        }
+        if (romfs == nullptr) {
+            auto loose = directory->GetSubdirectory("romfs");
+            if (!loose && directory->GetName() == "exefs") {
+                const auto parent = directory->GetParentDirectory();
+                if (parent) {
+                    loose = parent->GetSubdirectory("romfs");
+                }
+            }
+            if (loose) {
+                romfs = FileSys::CreateRomFS(std::move(loose));
+            }
+        }
+    }
     if (romfs == nullptr) {
         return ResultStatus::ErrorNoRomFS;
     }