loader: Add DeconstructedRomDirectory for game dumps.

1 files changed, 101 insertions, 0 deletions

diff --git a/src/core/loader/deconstructed_rom_directory.cpp b/src/core/loader/deconstructed_rom_directory.cpp
new file mode 100644
index 000000000..daedeaab0
--- /dev/null
+++ b/src/core/loader/deconstructed_rom_directory.cpp
@@ -0,0 +1,101 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "common/common_funcs.h"
+#include "common/common_paths.h"
+#include "common/logging/log.h"
+#include "common/string_util.h"
+#include "core/hle/kernel/process.h"
+#include "core/hle/kernel/resource_limit.h"
+#include "core/loader/deconstructed_rom_directory.h"
+#include "core/loader/nso.h"
+#include "core/memory.h"
+
+namespace Loader {
+
+FileType AppLoader_DeconstructedRomDirectory::IdentifyType(FileUtil::IOFile& file,
+                                                           const std::string& filepath) {
+    bool is_main_found{};
+    bool is_rtld_found{};
+    bool is_sdk_found{};
+
+    const auto callback = [&](unsigned* num_entries_out, const std::string& directory,
+                              const std::string& virtual_name) -> bool {
+
+        // Skip directories
+        std::string physical_name = directory + virtual_name;
+        if (FileUtil::IsDirectory(physical_name)) {
+            return true;
+        }
+
+        // Verify filename
+        if (Common::ToLower(virtual_name) == "main") {
+            is_main_found = true;
+        } else if (Common::ToLower(virtual_name) == "rtld") {
+            is_rtld_found = true;
+        } else if (Common::ToLower(virtual_name) == "sdk") {
+            is_sdk_found = true;
+        } else {
+            // Contrinue searching
+            return true;
+        }
+
+        // Verify file is an NSO
+        FileUtil::IOFile file(physical_name, "rb");
+        if (AppLoader_NSO::IdentifyType(file, physical_name) != FileType::NSO) {
+            return false;
+        }
+
+        // We are done if we've found and verified all required NSOs
+        return !(is_main_found && is_rtld_found && is_sdk_found);
+    };
+
+    // Search the directory recursively, looking for the required modules
+    const std::string directory = filepath.substr(0, filepath.find_last_of("/\\")) + DIR_SEP;
+    FileUtil::ForeachDirectoryEntry(nullptr, directory, callback);
+
+    if (is_main_found && is_rtld_found && is_sdk_found) {
+        return FileType::DeconstructedRomDirectory;
+    }
+
+    return FileType::Error;
+}
+
+ResultStatus AppLoader_DeconstructedRomDirectory::Load(
+    Kernel::SharedPtr<Kernel::Process>& process) {
+    if (is_loaded) {
+        return ResultStatus::ErrorAlreadyLoaded;
+    }
+    if (!file.IsOpen()) {
+        return ResultStatus::Error;
+    }
+
+    process = Kernel::Process::Create("main");
+
+    // Load NSO modules
+    VAddr next_load_addr{Memory::PROCESS_IMAGE_VADDR};
+    for (const auto& module : {"rtld", "main", "subsdk0", "subsdk1", "subsdk2", "subsdk3",
+                               "subsdk4", "subsdk5", "subsdk6", "subsdk7", "sdk"}) {
+        const std::string path =
+            filepath.substr(0, filepath.find_last_of("/\\")) + DIR_SEP + module;
+        const VAddr load_addr = next_load_addr;
+        next_load_addr = AppLoader_NSO::LoadModule(path, load_addr);
+        if (next_load_addr) {
+            LOG_DEBUG(Loader, "loaded module %s @ 0x%llx", module, load_addr);
+        } else {
+            next_load_addr = load_addr;
+        }
+    }
+
+    process->svc_access_mask.set();
+    process->address_mappings = default_address_mappings;
+    process->resource_limit =
+        Kernel::ResourceLimit::GetForCategory(Kernel::ResourceLimitCategory::APPLICATION);
+    process->Run(Memory::PROCESS_IMAGE_VADDR, 48, Kernel::DEFAULT_STACK_SIZE);
+
+    is_loaded = true;
+    return ResultStatus::Success;
+}
+
+} // namespace Loader