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// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <memory>
#include <string>
#include "common/logging/log.h"
#include "common/string_util.h"
#include "core/hle/kernel/process.h"
#include "core/loader/elf.h"
#include "core/loader/nro.h"
#include "core/loader/nso.h"
////////////////////////////////////////////////////////////////////////////////////////////////////
namespace Loader {
const std::initializer_list<Kernel::AddressMapping> default_address_mappings = {
{0x1FF50000, 0x8000, true}, // part of DSP RAM
{0x1FF70000, 0x8000, true}, // part of DSP RAM
{0x1F000000, 0x600000, false}, // entire VRAM
};
FileType IdentifyFile(FileUtil::IOFile& file, const std::string& filepath) {
FileType type;
#define CHECK_TYPE(loader) \
type = AppLoader_##loader::IdentifyType(file, filepath); \
if (FileType::Error != type) \
return type;
CHECK_TYPE(ELF)
CHECK_TYPE(NSO)
CHECK_TYPE(NRO)
#undef CHECK_TYPE
return FileType::Unknown;
}
FileType IdentifyFile(const std::string& file_name) {
FileUtil::IOFile file(file_name, "rb");
if (!file.IsOpen()) {
LOG_ERROR(Loader, "Failed to load file %s", file_name.c_str());
return FileType::Unknown;
}
return IdentifyFile(file, file_name);
}
FileType GuessFromExtension(const std::string& extension_) {
std::string extension = Common::ToLower(extension_);
if (extension == ".elf")
return FileType::ELF;
else if (extension == ".nro")
return FileType::NRO;
else if (extension == ".nso")
return FileType::NSO;
return FileType::Unknown;
}
const char* GetFileTypeString(FileType type) {
switch (type) {
case FileType::ELF:
return "ELF";
case FileType::NRO:
return "NRO";
case FileType::NSO:
return "NSO";
case FileType::Error:
case FileType::Unknown:
break;
}
return "unknown";
}
/**
* Get a loader for a file with a specific type
* @param file The file to load
* @param type The type of the file
* @param filename the file name (without path)
* @param filepath the file full path (with name)
* @return std::unique_ptr<AppLoader> a pointer to a loader object; nullptr for unsupported type
*/
static std::unique_ptr<AppLoader> GetFileLoader(FileUtil::IOFile&& file, FileType type,
const std::string& filename,
const std::string& filepath) {
switch (type) {
// Standard ELF file format.
case FileType::ELF:
return std::make_unique<AppLoader_ELF>(std::move(file), filename);
// NX NSO file format.
case FileType::NSO:
return std::make_unique<AppLoader_NSO>(std::move(file), filepath);
// NX NRO file format.
case FileType::NRO:
return std::make_unique<AppLoader_NRO>(std::move(file), filepath);
default:
return nullptr;
}
}
std::unique_ptr<AppLoader> GetLoader(const std::string& filename) {
FileUtil::IOFile file(filename, "rb");
if (!file.IsOpen()) {
LOG_ERROR(Loader, "Failed to load file %s", filename.c_str());
return nullptr;
}
std::string filename_filename, filename_extension;
Common::SplitPath(filename, nullptr, &filename_filename, &filename_extension);
FileType type = IdentifyFile(file, filename);
FileType filename_type = GuessFromExtension(filename_extension);
if (type != filename_type) {
LOG_WARNING(Loader, "File %s has a different type than its extension.", filename.c_str());
if (FileType::Unknown == type)
type = filename_type;
}
LOG_DEBUG(Loader, "Loading file %s as %s...", filename.c_str(), GetFileTypeString(type));
return GetFileLoader(std::move(file), type, filename_filename, filename);
}
} // namespace Loader
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