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https://github.com/yuzu-mirror/yuzu.git
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139 lines
4 KiB
C++
139 lines
4 KiB
C++
// Copyright 2018 yuzu emulator team
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#include <memory>
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#include <string>
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#include "common/logging/log.h"
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#include "common/string_util.h"
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#include "core/file_sys/vfs_real.h"
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#include "core/hle/kernel/process.h"
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#include "core/loader/deconstructed_rom_directory.h"
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#include "core/loader/elf.h"
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#include "core/loader/nca.h"
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#include "core/loader/nro.h"
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#include "core/loader/nso.h"
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namespace Loader {
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const std::initializer_list<Kernel::AddressMapping> default_address_mappings = {
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{0x1FF50000, 0x8000, true}, // part of DSP RAM
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{0x1FF70000, 0x8000, true}, // part of DSP RAM
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{0x1F000000, 0x600000, false}, // entire VRAM
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};
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FileType IdentifyFile(FileSys::VirtualFile file) {
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FileType type;
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#define CHECK_TYPE(loader) \
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type = AppLoader_##loader::IdentifyType(file); \
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if (FileType::Error != type) \
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return type;
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CHECK_TYPE(DeconstructedRomDirectory)
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CHECK_TYPE(ELF)
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CHECK_TYPE(NSO)
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CHECK_TYPE(NRO)
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CHECK_TYPE(NCA)
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#undef CHECK_TYPE
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return FileType::Unknown;
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}
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FileType IdentifyFile(const std::string& file_name) {
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return IdentifyFile(FileSys::VirtualFile(std::make_shared<FileSys::RealVfsFile>(file_name)));
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}
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FileType GuessFromFilename(const std::string& name) {
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if (name == "main")
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return FileType::DeconstructedRomDirectory;
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const std::string extension =
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Common::ToLower(std::string(FileUtil::GetExtensionFromFilename(name)));
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if (extension == "elf")
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return FileType::ELF;
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if (extension == "nro")
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return FileType::NRO;
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if (extension == "nso")
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return FileType::NSO;
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if (extension == "nca")
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return FileType::NCA;
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return FileType::Unknown;
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}
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const char* GetFileTypeString(FileType type) {
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switch (type) {
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case FileType::ELF:
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return "ELF";
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case FileType::NRO:
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return "NRO";
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case FileType::NSO:
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return "NSO";
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case FileType::NCA:
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return "NCA";
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case FileType::DeconstructedRomDirectory:
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return "Directory";
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case FileType::Error:
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case FileType::Unknown:
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break;
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}
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return "unknown";
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}
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/**
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* Get a loader for a file with a specific type
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* @param file The file to load
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* @param type The type of the file
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* @param file the file to retrieve the loader for
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* @param type the file type
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* @return std::unique_ptr<AppLoader> a pointer to a loader object; nullptr for unsupported type
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*/
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static std::unique_ptr<AppLoader> GetFileLoader(FileSys::VirtualFile file, FileType type) {
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switch (type) {
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// Standard ELF file format.
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case FileType::ELF:
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return std::make_unique<AppLoader_ELF>(std::move(file));
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// NX NSO file format.
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case FileType::NSO:
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return std::make_unique<AppLoader_NSO>(std::move(file));
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// NX NRO file format.
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case FileType::NRO:
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return std::make_unique<AppLoader_NRO>(std::move(file));
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// NX NCA file format.
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case FileType::NCA:
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return std::make_unique<AppLoader_NCA>(std::move(file));
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// NX deconstructed ROM directory.
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case FileType::DeconstructedRomDirectory:
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return std::make_unique<AppLoader_DeconstructedRomDirectory>(std::move(file));
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default:
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return nullptr;
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}
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}
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std::unique_ptr<AppLoader> GetLoader(FileSys::VirtualFile file) {
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FileType type = IdentifyFile(file);
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FileType filename_type = GuessFromFilename(file->GetName());
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if (type != filename_type) {
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LOG_WARNING(Loader, "File {} has a different type than its extension.", file->GetName());
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if (FileType::Unknown == type)
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type = filename_type;
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}
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LOG_DEBUG(Loader, "Loading file {} as {}...", file->GetName(), GetFileTypeString(type));
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return GetFileLoader(std::move(file), type);
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}
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} // namespace Loader
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